i40e_main.c 399.0 KB
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// SPDX-License-Identifier: GPL-2.0
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/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Driver
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 * Copyright(c) 2013 - 2017 Intel Corporation.
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 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
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 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

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#include <linux/etherdevice.h>
#include <linux/of_net.h>
#include <linux/pci.h>
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#include <linux/bpf.h>
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/* Local includes */
#include "i40e.h"
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#include "i40e_diag.h"
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#include <net/udp_tunnel.h>
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/* All i40e tracepoints are defined by the include below, which
 * must be included exactly once across the whole kernel with
 * CREATE_TRACE_POINTS defined
 */
#define CREATE_TRACE_POINTS
#include "i40e_trace.h"
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const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
			"Intel(R) Ethernet Connection XL710 Network Driver";

#define DRV_KERN "-k"

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#define DRV_VERSION_MAJOR 2
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#define DRV_VERSION_MINOR 3
#define DRV_VERSION_BUILD 2
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#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
	     __stringify(DRV_VERSION_MINOR) "." \
	     __stringify(DRV_VERSION_BUILD)    DRV_KERN
const char i40e_driver_version_str[] = DRV_VERSION;
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static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
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/* a bit of forward declarations */
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
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static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
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static int i40e_add_vsi(struct i40e_vsi *vsi);
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
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static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
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static int i40e_setup_misc_vector(struct i40e_pf *pf);
static void i40e_determine_queue_usage(struct i40e_pf *pf);
static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
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static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired);
static int i40e_reset(struct i40e_pf *pf);
static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
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static void i40e_fdir_sb_setup(struct i40e_pf *pf);
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static int i40e_veb_get_bw_info(struct i40e_veb *veb);
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static int i40e_get_capabilities(struct i40e_pf *pf,
				 enum i40e_admin_queue_opc list_type);

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/* i40e_pci_tbl - PCI Device ID Table
 *
 * Last entry must be all 0s
 *
 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
 *   Class, Class Mask, private data (not used) }
 */
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static const struct pci_device_id i40e_pci_tbl[] = {
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
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	/* required last entry */
	{0, }
};
MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);

#define I40E_MAX_VF_COUNT 128
static int debug = -1;
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module_param(debug, uint, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
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MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

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static struct workqueue_struct *i40e_wq;

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/**
 * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 * @alignment: what to align the allocation to
 **/
int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
			    u64 size, u32 alignment)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	mem->size = ALIGN(size, alignment);
	mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
				      &mem->pa, GFP_KERNEL);
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	if (!mem->va)
		return -ENOMEM;
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	return 0;
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}

/**
 * i40e_free_dma_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
	mem->va = NULL;
	mem->pa = 0;
	mem->size = 0;

	return 0;
}

/**
 * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 **/
int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
			     u32 size)
{
	mem->size = size;
	mem->va = kzalloc(size, GFP_KERNEL);

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	if (!mem->va)
		return -ENOMEM;
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	return 0;
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}

/**
 * i40e_free_virt_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
{
	/* it's ok to kfree a NULL pointer */
	kfree(mem->va);
	mem->va = NULL;
	mem->size = 0;

	return 0;
}

/**
 * i40e_get_lump - find a lump of free generic resource
 * @pf: board private structure
 * @pile: the pile of resource to search
 * @needed: the number of items needed
 * @id: an owner id to stick on the items assigned
 *
 * Returns the base item index of the lump, or negative for error
 *
 * The search_hint trick and lack of advanced fit-finding only work
 * because we're highly likely to have all the same size lump requests.
 * Linear search time and any fragmentation should be minimal.
 **/
static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
			 u16 needed, u16 id)
{
	int ret = -ENOMEM;
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	int i, j;
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	if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
		dev_info(&pf->pdev->dev,
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			 "param err: pile=%s needed=%d id=0x%04x\n",
			 pile ? "<valid>" : "<null>", needed, id);
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		return -EINVAL;
	}

	/* start the linear search with an imperfect hint */
	i = pile->search_hint;
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	while (i < pile->num_entries) {
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		/* skip already allocated entries */
		if (pile->list[i] & I40E_PILE_VALID_BIT) {
			i++;
			continue;
		}

		/* do we have enough in this lump? */
		for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
			if (pile->list[i+j] & I40E_PILE_VALID_BIT)
				break;
		}

		if (j == needed) {
			/* there was enough, so assign it to the requestor */
			for (j = 0; j < needed; j++)
				pile->list[i+j] = id | I40E_PILE_VALID_BIT;
			ret = i;
			pile->search_hint = i + j;
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			break;
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		}
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		/* not enough, so skip over it and continue looking */
		i += j;
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	}

	return ret;
}

/**
 * i40e_put_lump - return a lump of generic resource
 * @pile: the pile of resource to search
 * @index: the base item index
 * @id: the owner id of the items assigned
 *
 * Returns the count of items in the lump
 **/
static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
{
	int valid_id = (id | I40E_PILE_VALID_BIT);
	int count = 0;
	int i;

	if (!pile || index >= pile->num_entries)
		return -EINVAL;

	for (i = index;
	     i < pile->num_entries && pile->list[i] == valid_id;
	     i++) {
		pile->list[i] = 0;
		count++;
	}

	if (count && index < pile->search_hint)
		pile->search_hint = index;

	return count;
}

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/**
 * i40e_find_vsi_from_id - searches for the vsi with the given id
 * @pf - the pf structure to search for the vsi
 * @id - id of the vsi it is searching for
 **/
struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
{
	int i;

	for (i = 0; i < pf->num_alloc_vsi; i++)
		if (pf->vsi[i] && (pf->vsi[i]->id == id))
			return pf->vsi[i];

	return NULL;
}

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/**
 * i40e_service_event_schedule - Schedule the service task to wake up
 * @pf: board private structure
 *
 * If not already scheduled, this puts the task into the work queue
 **/
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void i40e_service_event_schedule(struct i40e_pf *pf)
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{
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	if (!test_bit(__I40E_DOWN, pf->state) &&
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	    !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
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		queue_work(i40e_wq, &pf->service_task);
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}

/**
 * i40e_tx_timeout - Respond to a Tx Hang
 * @netdev: network interface device structure
 *
 * If any port has noticed a Tx timeout, it is likely that the whole
 * device is munged, not just the one netdev port, so go for the full
 * reset.
 **/
static void i40e_tx_timeout(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
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	struct i40e_ring *tx_ring = NULL;
	unsigned int i, hung_queue = 0;
	u32 head, val;
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	pf->tx_timeout_count++;

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	/* find the stopped queue the same way the stack does */
	for (i = 0; i < netdev->num_tx_queues; i++) {
		struct netdev_queue *q;
		unsigned long trans_start;

		q = netdev_get_tx_queue(netdev, i);
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		trans_start = q->trans_start;
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		if (netif_xmit_stopped(q) &&
		    time_after(jiffies,
			       (trans_start + netdev->watchdog_timeo))) {
			hung_queue = i;
			break;
		}
	}

	if (i == netdev->num_tx_queues) {
		netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
	} else {
		/* now that we have an index, find the tx_ring struct */
		for (i = 0; i < vsi->num_queue_pairs; i++) {
			if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
				if (hung_queue ==
				    vsi->tx_rings[i]->queue_index) {
					tx_ring = vsi->tx_rings[i];
					break;
				}
			}
		}
	}

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	if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
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		pf->tx_timeout_recovery_level = 1;  /* reset after some time */
	else if (time_before(jiffies,
		      (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
		return;   /* don't do any new action before the next timeout */

	if (tx_ring) {
		head = i40e_get_head(tx_ring);
		/* Read interrupt register */
		if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			val = rd32(&pf->hw,
			     I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
						tx_ring->vsi->base_vector - 1));
		else
			val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);

		netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
			    vsi->seid, hung_queue, tx_ring->next_to_clean,
			    head, tx_ring->next_to_use,
			    readl(tx_ring->tail), val);
	}

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	pf->tx_timeout_last_recovery = jiffies;
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	netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
		    pf->tx_timeout_recovery_level, hung_queue);
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	switch (pf->tx_timeout_recovery_level) {
	case 1:
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		set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
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		break;
	case 2:
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		set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
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		break;
	case 3:
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		set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
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		break;
	default:
		netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
		break;
	}
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	i40e_service_event_schedule(pf);
	pf->tx_timeout_recovery_level++;
}

/**
 * i40e_get_vsi_stats_struct - Get System Network Statistics
 * @vsi: the VSI we care about
 *
 * Returns the address of the device statistics structure.
 * The statistics are actually updated from the service task.
 **/
struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
{
	return &vsi->net_stats;
}

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/**
 * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
 * @ring: Tx ring to get statistics from
 * @stats: statistics entry to be updated
 **/
static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
					    struct rtnl_link_stats64 *stats)
{
	u64 bytes, packets;
	unsigned int start;

	do {
		start = u64_stats_fetch_begin_irq(&ring->syncp);
		packets = ring->stats.packets;
		bytes   = ring->stats.bytes;
	} while (u64_stats_fetch_retry_irq(&ring->syncp, start));

	stats->tx_packets += packets;
	stats->tx_bytes   += bytes;
}

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/**
 * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 * @netdev: network interface device structure
 *
 * Returns the address of the device statistics structure.
 * The statistics are actually updated from the service task.
 **/
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static void i40e_get_netdev_stats_struct(struct net_device *netdev,
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				  struct rtnl_link_stats64 *stats)
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
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	struct i40e_ring *tx_ring, *rx_ring;
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	struct i40e_vsi *vsi = np->vsi;
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	struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
	int i;

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	if (test_bit(__I40E_VSI_DOWN, vsi->state))
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		return;
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	if (!vsi->tx_rings)
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		return;
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	rcu_read_lock();
	for (i = 0; i < vsi->num_queue_pairs; i++) {
		u64 bytes, packets;
		unsigned int start;

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		tx_ring = READ_ONCE(vsi->tx_rings[i]);
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		if (!tx_ring)
			continue;
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		i40e_get_netdev_stats_struct_tx(tx_ring, stats);
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		rx_ring = &tx_ring[1];

		do {
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			start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
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			packets = rx_ring->stats.packets;
			bytes   = rx_ring->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
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		stats->rx_packets += packets;
		stats->rx_bytes   += bytes;
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		if (i40e_enabled_xdp_vsi(vsi))
			i40e_get_netdev_stats_struct_tx(&rx_ring[1], stats);
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	}
	rcu_read_unlock();

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	/* following stats updated by i40e_watchdog_subtask() */
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	stats->multicast	= vsi_stats->multicast;
	stats->tx_errors	= vsi_stats->tx_errors;
	stats->tx_dropped	= vsi_stats->tx_dropped;
	stats->rx_errors	= vsi_stats->rx_errors;
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	stats->rx_dropped	= vsi_stats->rx_dropped;
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	stats->rx_crc_errors	= vsi_stats->rx_crc_errors;
	stats->rx_length_errors	= vsi_stats->rx_length_errors;
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}

/**
 * i40e_vsi_reset_stats - Resets all stats of the given vsi
 * @vsi: the VSI to have its stats reset
 **/
void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
{
	struct rtnl_link_stats64 *ns;
	int i;

	if (!vsi)
		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	memset(ns, 0, sizeof(*ns));
	memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
	memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
	memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
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	if (vsi->rx_rings && vsi->rx_rings[0]) {
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		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			memset(&vsi->rx_rings[i]->stats, 0,
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			       sizeof(vsi->rx_rings[i]->stats));
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			memset(&vsi->rx_rings[i]->rx_stats, 0,
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			       sizeof(vsi->rx_rings[i]->rx_stats));
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			memset(&vsi->tx_rings[i]->stats, 0,
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			       sizeof(vsi->tx_rings[i]->stats));
			memset(&vsi->tx_rings[i]->tx_stats, 0,
			       sizeof(vsi->tx_rings[i]->tx_stats));
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		}
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	}
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	vsi->stat_offsets_loaded = false;
}

/**
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 * i40e_pf_reset_stats - Reset all of the stats for the given PF
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 * @pf: the PF to be reset
 **/
void i40e_pf_reset_stats(struct i40e_pf *pf)
{
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	int i;

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	memset(&pf->stats, 0, sizeof(pf->stats));
	memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
	pf->stat_offsets_loaded = false;
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	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (pf->veb[i]) {
			memset(&pf->veb[i]->stats, 0,
			       sizeof(pf->veb[i]->stats));
			memset(&pf->veb[i]->stats_offsets, 0,
			       sizeof(pf->veb[i]->stats_offsets));
			pf->veb[i]->stat_offsets_loaded = false;
		}
	}
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	pf->hw_csum_rx_error = 0;
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}

/**
 * i40e_stat_update48 - read and update a 48 bit stat from the chip
 * @hw: ptr to the hardware info
 * @hireg: the high 32 bit reg to read
 * @loreg: the low 32 bit reg to read
 * @offset_loaded: has the initial offset been loaded yet
 * @offset: ptr to current offset value
 * @stat: ptr to the stat
 *
 * Since the device stats are not reset at PFReset, they likely will not
 * be zeroed when the driver starts.  We'll save the first values read
 * and use them as offsets to be subtracted from the raw values in order
 * to report stats that count from zero.  In the process, we also manage
 * the potential roll-over.
 **/
static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u64 new_data;

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	if (hw->device_id == I40E_DEV_ID_QEMU) {
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		new_data = rd32(hw, loreg);
		new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
	} else {
		new_data = rd64(hw, loreg);
	}
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = new_data - *offset;
	else
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		*stat = (new_data + BIT_ULL(48)) - *offset;
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	*stat &= 0xFFFFFFFFFFFFULL;
}

/**
 * i40e_stat_update32 - read and update a 32 bit stat from the chip
 * @hw: ptr to the hardware info
 * @reg: the hw reg to read
 * @offset_loaded: has the initial offset been loaded yet
 * @offset: ptr to current offset value
 * @stat: ptr to the stat
 **/
static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u32 new_data;

	new_data = rd32(hw, reg);
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = (u32)(new_data - *offset);
	else
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		*stat = (u32)((new_data + BIT_ULL(32)) - *offset);
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}

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/**
 * i40e_stat_update_and_clear32 - read and clear hw reg, update a 32 bit stat
 * @hw: ptr to the hardware info
 * @reg: the hw reg to read and clear
 * @stat: ptr to the stat
 **/
static void i40e_stat_update_and_clear32(struct i40e_hw *hw, u32 reg, u64 *stat)
{
	u32 new_data = rd32(hw, reg);

	wr32(hw, reg, 1); /* must write a nonzero value to clear register */
	*stat += new_data;
}

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/**
 * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 * @vsi: the VSI to be updated
 **/
void i40e_update_eth_stats(struct i40e_vsi *vsi)
{
	int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */

	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the stats that the hw collects */
	i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_errors, &es->tx_errors);
	i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_discards, &es->rx_discards);
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	i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
	i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_errors, &es->tx_errors);
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	i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
			   I40E_GLV_GORCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_bytes, &es->rx_bytes);
	i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
			   I40E_GLV_UPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_unicast, &es->rx_unicast);
	i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
			   I40E_GLV_MPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_multicast, &es->rx_multicast);
	i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
			   I40E_GLV_BPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_broadcast, &es->rx_broadcast);

	i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
			   I40E_GLV_GOTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_bytes, &es->tx_bytes);
	i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
			   I40E_GLV_UPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_unicast, &es->tx_unicast);
	i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
			   I40E_GLV_MPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_multicast, &es->tx_multicast);
	i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
			   I40E_GLV_BPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_broadcast, &es->tx_broadcast);
	vsi->stat_offsets_loaded = true;
}

/**
 * i40e_update_veb_stats - Update Switch component statistics
 * @veb: the VEB being updated
 **/
static void i40e_update_veb_stats(struct i40e_veb *veb)
{
	struct i40e_pf *pf = veb->pf;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
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	struct i40e_veb_tc_stats *veb_oes;
	struct i40e_veb_tc_stats *veb_es;
	int i, idx = 0;
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	idx = veb->stats_idx;
	es = &veb->stats;
	oes = &veb->stats_offsets;
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	veb_es = &veb->tc_stats;
	veb_oes = &veb->tc_stats_offsets;
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	/* Gather up the stats that the hw collects */
	i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_discards, &es->tx_discards);
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	if (hw->revision_id > 0)
		i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
				   veb->stat_offsets_loaded,
				   &oes->rx_unknown_protocol,
				   &es->rx_unknown_protocol);
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	i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_bytes, &es->rx_bytes);
	i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_unicast, &es->rx_unicast);
	i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_multicast, &es->rx_multicast);
	i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_broadcast, &es->rx_broadcast);

	i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_bytes, &es->tx_bytes);
	i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_unicast, &es->tx_unicast);
	i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_multicast, &es->tx_multicast);
	i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_broadcast, &es->tx_broadcast);
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	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
				   I40E_GLVEBTC_RPCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_rx_packets[i],
				   &veb_es->tc_rx_packets[i]);
		i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
				   I40E_GLVEBTC_RBCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_rx_bytes[i],
				   &veb_es->tc_rx_bytes[i]);
		i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
				   I40E_GLVEBTC_TPCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_tx_packets[i],
				   &veb_es->tc_tx_packets[i]);
		i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
				   I40E_GLVEBTC_TBCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_tx_bytes[i],
				   &veb_es->tc_tx_bytes[i]);
	}
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	veb->stat_offsets_loaded = true;
}

/**
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 * i40e_update_vsi_stats - Update the vsi statistics counters.
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 * @vsi: the VSI to be updated
 *
 * There are a few instances where we store the same stat in a
 * couple of different structs.  This is partly because we have
 * the netdev stats that need to be filled out, which is slightly
 * different from the "eth_stats" defined by the chip and used in
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 * VF communications.  We sort it out here.
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 **/
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static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
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{
	struct i40e_pf *pf = vsi->back;
	struct rtnl_link_stats64 *ons;
	struct rtnl_link_stats64 *ns;   /* netdev stats */
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
	u32 tx_restart, tx_busy;
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	struct i40e_ring *p;
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	u32 rx_page, rx_buf;
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	u64 bytes, packets;
	unsigned int start;
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	u64 tx_linearize;
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	u64 tx_force_wb;
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	u64 rx_p, rx_b;
	u64 tx_p, tx_b;
	u16 q;

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	if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
	    test_bit(__I40E_CONFIG_BUSY, pf->state))
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		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	ons = &vsi->net_stats_offsets;
	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the netdev and vsi stats that the driver collects
	 * on the fly during packet processing
	 */
	rx_b = rx_p = 0;
	tx_b = tx_p = 0;
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	tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
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	rx_page = 0;
	rx_buf = 0;
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	rcu_read_lock();
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	for (q = 0; q < vsi->num_queue_pairs; q++) {
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		/* locate Tx ring */
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		p = READ_ONCE(vsi->tx_rings[q]);
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		do {
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			start = u64_stats_fetch_begin_irq(&p->syncp);
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			packets = p->stats.packets;
			bytes = p->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
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		tx_b += bytes;
		tx_p += packets;
		tx_restart += p->tx_stats.restart_queue;
		tx_busy += p->tx_stats.tx_busy;
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		tx_linearize += p->tx_stats.tx_linearize;
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		tx_force_wb += p->tx_stats.tx_force_wb;
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		/* Rx queue is part of the same block as Tx queue */
		p = &p[1];
		do {
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			start = u64_stats_fetch_begin_irq(&p->syncp);
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			packets = p->stats.packets;
			bytes = p->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
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		rx_b += bytes;
		rx_p += packets;
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		rx_buf += p->rx_stats.alloc_buff_failed;
		rx_page += p->rx_stats.alloc_page_failed;
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	}
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	rcu_read_unlock();
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	vsi->tx_restart = tx_restart;
	vsi->tx_busy = tx_busy;
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	vsi->tx_linearize = tx_linearize;
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	vsi->tx_force_wb = tx_force_wb;
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	vsi->rx_page_failed = rx_page;
	vsi->rx_buf_failed = rx_buf;

	ns->rx_packets = rx_p;
	ns->rx_bytes = rx_b;
	ns->tx_packets = tx_p;
	ns->tx_bytes = tx_b;

	/* update netdev stats from eth stats */
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	i40e_update_eth_stats(vsi);
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	ons->tx_errors = oes->tx_errors;
	ns->tx_errors = es->tx_errors;
	ons->multicast = oes->rx_multicast;
	ns->multicast = es->rx_multicast;
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	ons->rx_dropped = oes->rx_discards;
	ns->rx_dropped = es->rx_discards;
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	ons->tx_dropped = oes->tx_discards;
	ns->tx_dropped = es->tx_discards;

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	/* pull in a couple PF stats if this is the main vsi */
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	if (vsi == pf->vsi[pf->lan_vsi]) {
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		ns->rx_crc_errors = pf->stats.crc_errors;
		ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
		ns->rx_length_errors = pf->stats.rx_length_errors;
	}
}
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/**
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 * i40e_update_pf_stats - Update the PF statistics counters.
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 * @pf: the PF to be updated
 **/
static void i40e_update_pf_stats(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	struct i40e_hw *hw = &pf->hw;
	u32 val;
	int i;
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	i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
			   I40E_GLPRT_GORCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
	i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
			   I40E_GLPRT_GOTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
	i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_discards,
			   &nsd->eth.rx_discards);
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	i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
			   I40E_GLPRT_UPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_unicast,
			   &nsd->eth.rx_unicast);
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	i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
			   I40E_GLPRT_MPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_multicast,
			   &nsd->eth.rx_multicast);
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	i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
			   I40E_GLPRT_BPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_broadcast,
			   &nsd->eth.rx_broadcast);
	i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
			   I40E_GLPRT_UPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_unicast,
			   &nsd->eth.tx_unicast);
	i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
			   I40E_GLPRT_MPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_multicast,
			   &nsd->eth.tx_multicast);
	i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
			   I40E_GLPRT_BPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_broadcast,
			   &nsd->eth.tx_broadcast);
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	i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_dropped_link_down,
			   &nsd->tx_dropped_link_down);
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	i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->crc_errors, &nsd->crc_errors);
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	i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->illegal_bytes, &nsd->illegal_bytes);
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	i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->mac_local_faults,
			   &nsd->mac_local_faults);
	i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->mac_remote_faults,
			   &nsd->mac_remote_faults);
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	i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_length_errors,
			   &nsd->rx_length_errors);
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	i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xon_rx, &nsd->link_xon_rx);
	i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xon_tx, &nsd->link_xon_tx);
958 959 960
	i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xoff_rx, &nsd->link_xoff_rx);
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	i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xoff_tx, &nsd->link_xoff_tx);
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	for (i = 0; i < 8; i++) {
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		i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
				   pf->stat_offsets_loaded,
				   &osd->priority_xoff_rx[i],
				   &nsd->priority_xoff_rx[i]);
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		i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_rx[i],
				   &nsd->priority_xon_rx[i]);
		i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_tx[i],
				   &nsd->priority_xon_tx[i]);
		i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xoff_tx[i],
				   &nsd->priority_xoff_tx[i]);
		i40e_stat_update32(hw,
				   I40E_GLPRT_RXON2OFFCNT(hw->port, i),
984
				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_2_xoff[i],
				   &nsd->priority_xon_2_xoff[i]);
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	}

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	i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
			   I40E_GLPRT_PRC64L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_64, &nsd->rx_size_64);
	i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
			   I40E_GLPRT_PRC127L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_127, &nsd->rx_size_127);
	i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
			   I40E_GLPRT_PRC255L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_255, &nsd->rx_size_255);
	i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
			   I40E_GLPRT_PRC511L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_511, &nsd->rx_size_511);
	i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
			   I40E_GLPRT_PRC1023L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_1023, &nsd->rx_size_1023);
	i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
			   I40E_GLPRT_PRC1522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_1522, &nsd->rx_size_1522);
	i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
			   I40E_GLPRT_PRC9522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_big, &nsd->rx_size_big);

	i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
			   I40E_GLPRT_PTC64L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_64, &nsd->tx_size_64);
	i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
			   I40E_GLPRT_PTC127L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_127, &nsd->tx_size_127);
	i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
			   I40E_GLPRT_PTC255L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_255, &nsd->tx_size_255);
	i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
			   I40E_GLPRT_PTC511L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_511, &nsd->tx_size_511);
	i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
			   I40E_GLPRT_PTC1023L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_1023, &nsd->tx_size_1023);
	i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
			   I40E_GLPRT_PTC1522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_1522, &nsd->tx_size_1522);
	i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
			   I40E_GLPRT_PTC9522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_big, &nsd->tx_size_big);

	i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_undersize, &nsd->rx_undersize);
	i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_fragments, &nsd->rx_fragments);
	i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_oversize, &nsd->rx_oversize);
	i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_jabber, &nsd->rx_jabber);

1060
	/* FDIR stats */
1061 1062 1063 1064 1065 1066 1067 1068 1069
	i40e_stat_update_and_clear32(hw,
			I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(hw->pf_id)),
			&nsd->fd_atr_match);
	i40e_stat_update_and_clear32(hw,
			I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(hw->pf_id)),
			&nsd->fd_sb_match);
	i40e_stat_update_and_clear32(hw,
			I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(hw->pf_id)),
			&nsd->fd_atr_tunnel_match);
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	val = rd32(hw, I40E_PRTPM_EEE_STAT);
	nsd->tx_lpi_status =
		       (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
			I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
	nsd->rx_lpi_status =
		       (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
			I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
	i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
			   pf->stat_offsets_loaded,
			   &osd->tx_lpi_count, &nsd->tx_lpi_count);
	i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
			   pf->stat_offsets_loaded,
			   &osd->rx_lpi_count, &nsd->rx_lpi_count);

1085
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1086
	    !test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
1087 1088 1089 1090 1091
		nsd->fd_sb_status = true;
	else
		nsd->fd_sb_status = false;

	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1092
	    !test_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
1093 1094 1095 1096
		nsd->fd_atr_status = true;
	else
		nsd->fd_atr_status = false;

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	pf->stat_offsets_loaded = true;
}

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/**
 * i40e_update_stats - Update the various statistics counters.
 * @vsi: the VSI to be updated
 *
 * Update the various stats for this VSI and its related entities.
 **/
void i40e_update_stats(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	if (vsi == pf->vsi[pf->lan_vsi])
		i40e_update_pf_stats(pf);

	i40e_update_vsi_stats(vsi);
}

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/**
 * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
 *
 * Returns ptr to the filter object or NULL
 **/
static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1125
						const u8 *macaddr, s16 vlan)
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{
	struct i40e_mac_filter *f;
1128
	u64 key;
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	if (!vsi || !macaddr)
		return NULL;

1133 1134
	key = i40e_addr_to_hkey(macaddr);
	hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
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		if ((ether_addr_equal(macaddr, f->macaddr)) &&
1136
		    (vlan == f->vlan))
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			return f;
	}
	return NULL;
}

/**
 * i40e_find_mac - Find a mac addr in the macvlan filters list
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address we are searching for
 *
 * Returns the first filter with the provided MAC address or NULL if
 * MAC address was not found
 **/
1150
struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
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{
	struct i40e_mac_filter *f;
1153
	u64 key;
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	if (!vsi || !macaddr)
		return NULL;

1158 1159
	key = i40e_addr_to_hkey(macaddr);
	hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1160
		if ((ether_addr_equal(macaddr, f->macaddr)))
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			return f;
	}
	return NULL;
}

/**
 * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
 * @vsi: the VSI to be searched
 *
 * Returns true if VSI is in vlan mode or false otherwise
 **/
bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
{
1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
	/* If we have a PVID, always operate in VLAN mode */
	if (vsi->info.pvid)
		return true;

	/* We need to operate in VLAN mode whenever we have any filters with
	 * a VLAN other than I40E_VLAN_ALL. We could check the table each
	 * time, incurring search cost repeatedly. However, we can notice two
	 * things:
	 *
	 * 1) the only place where we can gain a VLAN filter is in
	 *    i40e_add_filter.
	 *
	 * 2) the only place where filters are actually removed is in
1187
	 *    i40e_sync_filters_subtask.
1188 1189 1190 1191
	 *
	 * Thus, we can simply use a boolean value, has_vlan_filters which we
	 * will set to true when we add a VLAN filter in i40e_add_filter. Then
	 * we have to perform the full search after deleting filters in
1192
	 * i40e_sync_filters_subtask, but we already have to search
1193 1194 1195 1196
	 * filters here and can perform the check at the same time. This
	 * results in avoiding embedding a loop for VLAN mode inside another
	 * loop over all the filters, and should maintain correctness as noted
	 * above.
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	 */
1198
	return vsi->has_vlan_filter;
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}

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/**
 * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
 * @vsi: the VSI to configure
 * @tmp_add_list: list of filters ready to be added
 * @tmp_del_list: list of filters ready to be deleted
 * @vlan_filters: the number of active VLAN filters
 *
 * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
 * behave as expected. If we have any active VLAN filters remaining or about
 * to be added then we need to update non-VLAN filters to be marked as VLAN=0
 * so that they only match against untagged traffic. If we no longer have any
 * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
 * so that they match against both tagged and untagged traffic. In this way,
 * we ensure that we correctly receive the desired traffic. This ensures that
 * when we have an active VLAN we will receive only untagged traffic and
 * traffic matching active VLANs. If we have no active VLANs then we will
 * operate in non-VLAN mode and receive all traffic, tagged or untagged.
 *
 * Finally, in a similar fashion, this function also corrects filters when
 * there is an active PVID assigned to this VSI.
 *
 * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
 *
 * This function is only expected to be called from within
 * i40e_sync_vsi_filters.
 *
 * NOTE: This function expects to be called while under the
 * mac_filter_hash_lock
 */
static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
					 struct hlist_head *tmp_add_list,
					 struct hlist_head *tmp_del_list,
					 int vlan_filters)
{
1235
	s16 pvid = le16_to_cpu(vsi->info.pvid);
1236
	struct i40e_mac_filter *f, *add_head;
1237
	struct i40e_new_mac_filter *new;
1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255
	struct hlist_node *h;
	int bkt, new_vlan;

	/* To determine if a particular filter needs to be replaced we
	 * have the three following conditions:
	 *
	 * a) if we have a PVID assigned, then all filters which are
	 *    not marked as VLAN=PVID must be replaced with filters that
	 *    are.
	 * b) otherwise, if we have any active VLANS, all filters
	 *    which are marked as VLAN=-1 must be replaced with
	 *    filters marked as VLAN=0
	 * c) finally, if we do not have any active VLANS, all filters
	 *    which are marked as VLAN=0 must be replaced with filters
	 *    marked as VLAN=-1
	 */

	/* Update the filters about to be added in place */
1256
	hlist_for_each_entry(new, tmp_add_list, hlist) {
1257 1258
		if (pvid && new->f->vlan != pvid)
			new->f->vlan = pvid;
1259 1260 1261 1262
		else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
			new->f->vlan = 0;
		else if (!vlan_filters && new->f->vlan == 0)
			new->f->vlan = I40E_VLAN_ANY;
1263 1264 1265 1266 1267 1268 1269 1270 1271
	}

	/* Update the remaining active filters */
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
		/* Combine the checks for whether a filter needs to be changed
		 * and then determine the new VLAN inside the if block, in
		 * order to avoid duplicating code for adding the new filter
		 * then deleting the old filter.
		 */
1272
		if ((pvid && f->vlan != pvid) ||
1273 1274 1275
		    (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
		    (!vlan_filters && f->vlan == 0)) {
			/* Determine the new vlan we will be adding */
1276 1277
			if (pvid)
				new_vlan = pvid;
1278 1279 1280 1281 1282 1283 1284 1285 1286 1287
			else if (vlan_filters)
				new_vlan = 0;
			else
				new_vlan = I40E_VLAN_ANY;

			/* Create the new filter */
			add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
			if (!add_head)
				return -ENOMEM;

1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
			/* Create a temporary i40e_new_mac_filter */
			new = kzalloc(sizeof(*new), GFP_ATOMIC);
			if (!new)
				return -ENOMEM;

			new->f = add_head;
			new->state = add_head->state;

			/* Add the new filter to the tmp list */
			hlist_add_head(&new->hlist, tmp_add_list);
1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310

			/* Put the original filter into the delete list */
			f->state = I40E_FILTER_REMOVE;
			hash_del(&f->hlist);
			hlist_add_head(&f->hlist, tmp_del_list);
		}
	}

	vsi->has_vlan_filter = !!vlan_filters;

	return 0;
}

1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
/**
 * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
 * @vsi: the PF Main VSI - inappropriate for any other VSI
 * @macaddr: the MAC address
 *
 * Remove whatever filter the firmware set up so the driver can manage
 * its own filtering intelligently.
 **/
static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
{
	struct i40e_aqc_remove_macvlan_element_data element;
	struct i40e_pf *pf = vsi->back;

	/* Only appropriate for the PF main VSI */
	if (vsi->type != I40E_VSI_MAIN)
		return;

	memset(&element, 0, sizeof(element));
	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	/* Ignore error returns, some firmware does it this way... */
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
	i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);

	memset(&element, 0, sizeof(element));
	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	/* ...and some firmware does it this way. */
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
			I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
	i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
}

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/**
 * i40e_add_filter - Add a mac/vlan filter to the VSI
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
 *
 * Returns ptr to the filter object or NULL when no memory available.
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 *
1352
 * NOTE: This function is expected to be called with mac_filter_hash_lock
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 * being held.
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 **/
struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1356
					const u8 *macaddr, s16 vlan)
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{
	struct i40e_mac_filter *f;
1359
	u64 key;
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	if (!vsi || !macaddr)
		return NULL;

1364
	f = i40e_find_filter(vsi, macaddr, vlan);
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	if (!f) {
		f = kzalloc(sizeof(*f), GFP_ATOMIC);
		if (!f)
1368
			return NULL;
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1370 1371 1372 1373 1374 1375
		/* Update the boolean indicating if we need to function in
		 * VLAN mode.
		 */
		if (vlan >= 0)
			vsi->has_vlan_filter = true;

1376
		ether_addr_copy(f->macaddr, macaddr);
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		f->vlan = vlan;
1378
		f->state = I40E_FILTER_NEW;
1379 1380 1381 1382
		INIT_HLIST_NODE(&f->hlist);

		key = i40e_addr_to_hkey(macaddr);
		hash_add(vsi->mac_filter_hash, &f->hlist, key);
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		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1385
		set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
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	}

1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398
	/* If we're asked to add a filter that has been marked for removal, it
	 * is safe to simply restore it to active state. __i40e_del_filter
	 * will have simply deleted any filters which were previously marked
	 * NEW or FAILED, so if it is currently marked REMOVE it must have
	 * previously been ACTIVE. Since we haven't yet run the sync filters
	 * task, just restore this filter to the ACTIVE state so that the
	 * sync task leaves it in place
	 */
	if (f->state == I40E_FILTER_REMOVE)
		f->state = I40E_FILTER_ACTIVE;

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	return f;
}

/**
1403 1404 1405 1406 1407 1408 1409
 * __i40e_del_filter - Remove a specific filter from the VSI
 * @vsi: VSI to remove from
 * @f: the filter to remove from the list
 *
 * This function should be called instead of i40e_del_filter only if you know
 * the exact filter you will remove already, such as via i40e_find_filter or
 * i40e_find_mac.
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Kiran Patil 已提交
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 *
1411
 * NOTE: This function is expected to be called with mac_filter_hash_lock
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 * being held.
1413 1414 1415
 * ANOTHER NOTE: This function MUST be called from within the context of
 * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
 * instead of list_for_each_entry().
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 **/
1417
void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
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1418
{
1419
	if (!f)
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1420 1421
		return;

1422 1423 1424 1425
	/* If the filter was never added to firmware then we can just delete it
	 * directly and we don't want to set the status to remove or else an
	 * admin queue command will unnecessarily fire.
	 */
1426 1427
	if ((f->state == I40E_FILTER_FAILED) ||
	    (f->state == I40E_FILTER_NEW)) {
1428
		hash_del(&f->hlist);
1429
		kfree(f);
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1430
	} else {
1431
		f->state = I40E_FILTER_REMOVE;
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	}
1433 1434

	vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1435
	set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->state);
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}

1438 1439 1440 1441 1442 1443
/**
 * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the VLAN
 *
1444
 * NOTE: This function is expected to be called with mac_filter_hash_lock
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460
 * being held.
 * ANOTHER NOTE: This function MUST be called from within the context of
 * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
 * instead of list_for_each_entry().
 **/
void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return;

	f = i40e_find_filter(vsi, macaddr, vlan);
	__i40e_del_filter(vsi, f);
}

1461
/**
1462
 * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1463 1464 1465
 * @vsi: the VSI to be searched
 * @macaddr: the mac address to be filtered
 *
1466 1467
 * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
 * go through all the macvlan filters and add a macvlan filter for each
1468 1469
 * unique vlan that already exists. If a PVID has been assigned, instead only
 * add the macaddr to that VLAN.
1470
 *
1471
 * Returns last filter added on success, else NULL
1472
 **/
1473 1474
struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
					    const u8 *macaddr)
1475
{
1476
	struct i40e_mac_filter *f, *add = NULL;
1477 1478
	struct hlist_node *h;
	int bkt;
1479 1480 1481 1482

	if (vsi->info.pvid)
		return i40e_add_filter(vsi, macaddr,
				       le16_to_cpu(vsi->info.pvid));
1483

1484 1485 1486
	if (!i40e_is_vsi_in_vlan(vsi))
		return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);

1487
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1488 1489
		if (f->state == I40E_FILTER_REMOVE)
			continue;
1490 1491 1492
		add = i40e_add_filter(vsi, macaddr, f->vlan);
		if (!add)
			return NULL;
1493 1494
	}

1495
	return add;
1496 1497 1498
}

/**
1499
 * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1500 1501 1502
 * @vsi: the VSI to be searched
 * @macaddr: the mac address to be removed
 *
1503 1504
 * Removes a given MAC address from a VSI regardless of what VLAN it has been
 * associated with.
1505 1506 1507
 *
 * Returns 0 for success, or error
 **/
1508
int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1509
{
1510 1511
	struct i40e_mac_filter *f;
	struct hlist_node *h;
1512
	bool found = false;
1513
	int bkt;
1514

1515 1516 1517
	WARN(!spin_is_locked(&vsi->mac_filter_hash_lock),
	     "Missing mac_filter_hash_lock\n");
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1518 1519 1520 1521
		if (ether_addr_equal(macaddr, f->macaddr)) {
			__i40e_del_filter(vsi, f);
			found = true;
		}
1522
	}
1523 1524

	if (found)
1525
		return 0;
1526 1527
	else
		return -ENOENT;
1528 1529
}

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/**
 * i40e_set_mac - NDO callback to set mac address
 * @netdev: network interface device structure
 * @p: pointer to an address structure
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_set_mac(struct net_device *netdev, void *p)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
1541 1542
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
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	struct sockaddr *addr = p;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

1548 1549 1550 1551 1552
	if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
		netdev_info(netdev, "already using mac address %pM\n",
			    addr->sa_data);
		return 0;
	}
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1554 1555
	if (test_bit(__I40E_VSI_DOWN, vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, vsi->back->state))
1556 1557
		return -EADDRNOTAVAIL;

1558 1559 1560 1561 1562 1563
	if (ether_addr_equal(hw->mac.addr, addr->sa_data))
		netdev_info(netdev, "returning to hw mac address %pM\n",
			    hw->mac.addr);
	else
		netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);

1564 1565 1566 1567 1568 1569 1570 1571
	/* Copy the address first, so that we avoid a possible race with
	 * .set_rx_mode(). If we copy after changing the address in the filter
	 * list, we might open ourselves to a narrow race window where
	 * .set_rx_mode could delete our dev_addr filter and prevent traffic
	 * from passing.
	 */
	ether_addr_copy(netdev->dev_addr, addr->sa_data);

1572
	spin_lock_bh(&vsi->mac_filter_hash_lock);
1573 1574
	i40e_del_mac_filter(vsi, netdev->dev_addr);
	i40e_add_mac_filter(vsi, addr->sa_data);
1575
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
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	if (vsi->type == I40E_VSI_MAIN) {
		i40e_status ret;
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		ret = i40e_aq_mac_address_write(&vsi->back->hw,
1580
						I40E_AQC_WRITE_TYPE_LAA_WOL,
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						addr->sa_data, NULL);
1582 1583 1584 1585
		if (ret)
			netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
				    i40e_stat_str(hw, ret),
				    i40e_aq_str(hw, hw->aq.asq_last_status));
1586 1587
	}

1588 1589 1590 1591 1592
	/* schedule our worker thread which will take care of
	 * applying the new filter changes
	 */
	i40e_service_event_schedule(vsi->back);
	return 0;
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}

1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758
/**
 * i40e_config_rss_aq - Prepare for RSS using AQ commands
 * @vsi: vsi structure
 * @seed: RSS hash seed
 **/
static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
			      u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int ret = 0;

	if (seed) {
		struct i40e_aqc_get_set_rss_key_data *seed_dw =
			(struct i40e_aqc_get_set_rss_key_data *)seed;
		ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Cannot set RSS key, err %s aq_err %s\n",
				 i40e_stat_str(hw, ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
			return ret;
		}
	}
	if (lut) {
		bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;

		ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Cannot set RSS lut, err %s aq_err %s\n",
				 i40e_stat_str(hw, ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
			return ret;
		}
	}
	return ret;
}

/**
 * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
 * @vsi: VSI structure
 **/
static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	u8 seed[I40E_HKEY_ARRAY_SIZE];
	u8 *lut;
	int ret;

	if (!(pf->hw_features & I40E_HW_RSS_AQ_CAPABLE))
		return 0;
	if (!vsi->rss_size)
		vsi->rss_size = min_t(int, pf->alloc_rss_size,
				      vsi->num_queue_pairs);
	if (!vsi->rss_size)
		return -EINVAL;
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;

	/* Use the user configured hash keys and lookup table if there is one,
	 * otherwise use default
	 */
	if (vsi->rss_lut_user)
		memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
	else
		i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
	if (vsi->rss_hkey_user)
		memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
	else
		netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
	ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
	kfree(lut);
	return ret;
}

/**
 * i40e_vsi_setup_queue_map_mqprio - Prepares mqprio based tc_config
 * @vsi: the VSI being configured,
 * @ctxt: VSI context structure
 * @enabled_tc: number of traffic classes to enable
 *
 * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
 **/
static int i40e_vsi_setup_queue_map_mqprio(struct i40e_vsi *vsi,
					   struct i40e_vsi_context *ctxt,
					   u8 enabled_tc)
{
	u16 qcount = 0, max_qcount, qmap, sections = 0;
	int i, override_q, pow, num_qps, ret;
	u8 netdev_tc = 0, offset = 0;

	if (vsi->type != I40E_VSI_MAIN)
		return -EINVAL;
	sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
	sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
	vsi->tc_config.numtc = vsi->mqprio_qopt.qopt.num_tc;
	vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
	num_qps = vsi->mqprio_qopt.qopt.count[0];

	/* find the next higher power-of-2 of num queue pairs */
	pow = ilog2(num_qps);
	if (!is_power_of_2(num_qps))
		pow++;
	qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
		(pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);

	/* Setup queue offset/count for all TCs for given VSI */
	max_qcount = vsi->mqprio_qopt.qopt.count[0];
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* See if the given TC is enabled for the given VSI */
		if (vsi->tc_config.enabled_tc & BIT(i)) {
			offset = vsi->mqprio_qopt.qopt.offset[i];
			qcount = vsi->mqprio_qopt.qopt.count[i];
			if (qcount > max_qcount)
				max_qcount = qcount;
			vsi->tc_config.tc_info[i].qoffset = offset;
			vsi->tc_config.tc_info[i].qcount = qcount;
			vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
		} else {
			/* TC is not enabled so set the offset to
			 * default queue and allocate one queue
			 * for the given TC.
			 */
			vsi->tc_config.tc_info[i].qoffset = 0;
			vsi->tc_config.tc_info[i].qcount = 1;
			vsi->tc_config.tc_info[i].netdev_tc = 0;
		}
	}

	/* Set actual Tx/Rx queue pairs */
	vsi->num_queue_pairs = offset + qcount;

	/* Setup queue TC[0].qmap for given VSI context */
	ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
	ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
	ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
	ctxt->info.valid_sections |= cpu_to_le16(sections);

	/* Reconfigure RSS for main VSI with max queue count */
	vsi->rss_size = max_qcount;
	ret = i40e_vsi_config_rss(vsi);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to reconfig rss for num_queues (%u)\n",
			 max_qcount);
		return ret;
	}
	vsi->reconfig_rss = true;
	dev_dbg(&vsi->back->pdev->dev,
		"Reconfigured rss with num_queues (%u)\n", max_qcount);

	/* Find queue count available for channel VSIs and starting offset
	 * for channel VSIs
	 */
	override_q = vsi->mqprio_qopt.qopt.count[0];
	if (override_q && override_q < vsi->num_queue_pairs) {
		vsi->cnt_q_avail = vsi->num_queue_pairs - override_q;
		vsi->next_base_queue = override_q;
	}
	return 0;
}

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/**
 * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
 * @vsi: the VSI being setup
 * @ctxt: VSI context structure
 * @enabled_tc: Enabled TCs bitmap
 * @is_add: True if called before Add VSI
 *
 * Setup VSI queue mapping for enabled traffic classes.
 **/
static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
				     struct i40e_vsi_context *ctxt,
				     u8 enabled_tc,
				     bool is_add)
{
	struct i40e_pf *pf = vsi->back;
	u16 sections = 0;
	u8 netdev_tc = 0;
1776
	u16 numtc = 1;
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1777 1778 1779 1780
	u16 qcount;
	u8 offset;
	u16 qmap;
	int i;
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Neerav Parikh 已提交
1781
	u16 num_tc_qps = 0;
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1782 1783 1784 1785

	sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
	offset = 0;

1786 1787
	/* Number of queues per enabled TC */
	num_tc_qps = vsi->alloc_queue_pairs;
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1788 1789
	if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
		/* Find numtc from enabled TC bitmap */
1790
		for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
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Jesse Brandeburg 已提交
1791
			if (enabled_tc & BIT(i)) /* TC is enabled */
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1792 1793 1794 1795 1796 1797
				numtc++;
		}
		if (!numtc) {
			dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
			numtc = 1;
		}
1798 1799 1800
		num_tc_qps = num_tc_qps / numtc;
		num_tc_qps = min_t(int, num_tc_qps,
				   i40e_pf_get_max_q_per_tc(pf));
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	}

	vsi->tc_config.numtc = numtc;
	vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;

1806 1807 1808 1809
	/* Do not allow use more TC queue pairs than MSI-X vectors exist */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);

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	/* Setup queue offset/count for all TCs for given VSI */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* See if the given TC is enabled for the given VSI */
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		if (vsi->tc_config.enabled_tc & BIT(i)) {
1814
			/* TC is enabled */
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1815 1816 1817 1818
			int pow, num_qps;

			switch (vsi->type) {
			case I40E_VSI_MAIN:
1819 1820 1821 1822 1823 1824 1825
				if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
				    I40E_FLAG_FD_ATR_ENABLED)) ||
				    vsi->tc_config.enabled_tc != 1) {
					qcount = min_t(int, pf->alloc_rss_size,
						       num_tc_qps);
					break;
				}
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			case I40E_VSI_FDIR:
			case I40E_VSI_SRIOV:
			case I40E_VSI_VMDQ2:
			default:
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				qcount = num_tc_qps;
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1831 1832 1833
				WARN_ON(i != 0);
				break;
			}
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1834 1835
			vsi->tc_config.tc_info[i].qoffset = offset;
			vsi->tc_config.tc_info[i].qcount = qcount;
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			/* find the next higher power-of-2 of num queue pairs */
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			num_qps = qcount;
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			pow = 0;
1840
			while (num_qps && (BIT_ULL(pow) < qcount)) {
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				pow++;
				num_qps >>= 1;
			}

			vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
			qmap =
			    (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
			    (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);

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			offset += qcount;
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		} else {
			/* TC is not enabled so set the offset to
			 * default queue and allocate one queue
			 * for the given TC.
			 */
			vsi->tc_config.tc_info[i].qoffset = 0;
			vsi->tc_config.tc_info[i].qcount = 1;
			vsi->tc_config.tc_info[i].netdev_tc = 0;

			qmap = 0;
		}
		ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
	}

	/* Set actual Tx/Rx queue pairs */
	vsi->num_queue_pairs = offset;
1867 1868 1869
	if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
		if (vsi->req_queue_pairs > 0)
			vsi->num_queue_pairs = vsi->req_queue_pairs;
1870
		else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1871 1872
			vsi->num_queue_pairs = pf->num_lan_msix;
	}
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	/* Scheduler section valid can only be set for ADD VSI */
	if (is_add) {
		sections |= I40E_AQ_VSI_PROP_SCHED_VALID;

		ctxt->info.up_enable_bits = enabled_tc;
	}
	if (vsi->type == I40E_VSI_SRIOV) {
		ctxt->info.mapping_flags |=
				     cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
		for (i = 0; i < vsi->num_queue_pairs; i++)
			ctxt->info.queue_mapping[i] =
					       cpu_to_le16(vsi->base_queue + i);
	} else {
		ctxt->info.mapping_flags |=
					cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
		ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
	}
	ctxt->info.valid_sections |= cpu_to_le16(sections);
}

1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906
/**
 * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
 * @netdev: the netdevice
 * @addr: address to add
 *
 * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
 */
static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

1907
	if (i40e_add_mac_filter(vsi, addr))
1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925
		return 0;
	else
		return -ENOMEM;
}

/**
 * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
 * @netdev: the netdevice
 * @addr: address to add
 *
 * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
 */
static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

1926 1927 1928 1929 1930 1931 1932 1933
	/* Under some circumstances, we might receive a request to delete
	 * our own device address from our uc list. Because we store the
	 * device address in the VSI's MAC/VLAN filter list, we need to ignore
	 * such requests and not delete our device address from this list.
	 */
	if (ether_addr_equal(addr, netdev->dev_addr))
		return 0;

1934
	i40e_del_mac_filter(vsi, addr);
1935 1936 1937 1938

	return 0;
}

J
Jesse Brandeburg 已提交
1939 1940 1941 1942 1943 1944 1945 1946 1947
/**
 * i40e_set_rx_mode - NDO callback to set the netdev filters
 * @netdev: network interface device structure
 **/
static void i40e_set_rx_mode(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

1948
	spin_lock_bh(&vsi->mac_filter_hash_lock);
K
Kiran Patil 已提交
1949

1950 1951
	__dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
	__dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
J
Jesse Brandeburg 已提交
1952

1953
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
J
Jesse Brandeburg 已提交
1954 1955 1956 1957

	/* check for other flag changes */
	if (vsi->current_netdev_flags != vsi->netdev->flags) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1958
		set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
J
Jesse Brandeburg 已提交
1959 1960 1961
	}
}

K
Kiran Patil 已提交
1962
/**
1963
 * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1964
 * @vsi: Pointer to VSI struct
K
Kiran Patil 已提交
1965 1966 1967
 * @from: Pointer to list which contains MAC filter entries - changes to
 *        those entries needs to be undone.
 *
1968
 * MAC filter entries from this list were slated for deletion.
K
Kiran Patil 已提交
1969
 **/
1970 1971
static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
					 struct hlist_head *from)
K
Kiran Patil 已提交
1972
{
1973 1974 1975 1976 1977
	struct i40e_mac_filter *f;
	struct hlist_node *h;

	hlist_for_each_entry_safe(f, h, from, hlist) {
		u64 key = i40e_addr_to_hkey(f->macaddr);
K
Kiran Patil 已提交
1978 1979

		/* Move the element back into MAC filter list*/
1980 1981
		hlist_del(&f->hlist);
		hash_add(vsi->mac_filter_hash, &f->hlist, key);
K
Kiran Patil 已提交
1982 1983 1984
	}
}

1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
/**
 * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
 * @vsi: Pointer to vsi struct
 * @from: Pointer to list which contains MAC filter entries - changes to
 *        those entries needs to be undone.
 *
 * MAC filter entries from this list were slated for addition.
 **/
static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
					 struct hlist_head *from)
{
	struct i40e_new_mac_filter *new;
	struct hlist_node *h;

	hlist_for_each_entry_safe(new, h, from, hlist) {
		/* We can simply free the wrapper structure */
		hlist_del(&new->hlist);
		kfree(new);
	}
}

2006 2007
/**
 * i40e_next_entry - Get the next non-broadcast filter from a list
2008
 * @next: pointer to filter in list
2009 2010 2011 2012 2013
 *
 * Returns the next non-broadcast filter in the list. Required so that we
 * ignore broadcast filters within the list, since these are not handled via
 * the normal firmware update path.
 */
2014 2015
static
struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
2016
{
2017 2018 2019
	hlist_for_each_entry_continue(next, hlist) {
		if (!is_broadcast_ether_addr(next->f->macaddr))
			return next;
2020 2021
	}

2022
	return NULL;
2023 2024
}

K
Kiran Patil 已提交
2025
/**
2026 2027 2028 2029 2030
 * i40e_update_filter_state - Update filter state based on return data
 * from firmware
 * @count: Number of filters added
 * @add_list: return data from fw
 * @head: pointer to first filter in current batch
K
Kiran Patil 已提交
2031
 *
2032 2033
 * MAC filter entries from list were slated to be added to device. Returns
 * number of successful filters. Note that 0 does NOT mean success!
K
Kiran Patil 已提交
2034
 **/
2035 2036 2037
static int
i40e_update_filter_state(int count,
			 struct i40e_aqc_add_macvlan_element_data *add_list,
2038
			 struct i40e_new_mac_filter *add_head)
K
Kiran Patil 已提交
2039
{
2040 2041
	int retval = 0;
	int i;
K
Kiran Patil 已提交
2042

2043 2044 2045 2046 2047 2048
	for (i = 0; i < count; i++) {
		/* Always check status of each filter. We don't need to check
		 * the firmware return status because we pre-set the filter
		 * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
		 * request to the adminq. Thus, if it no longer matches then
		 * we know the filter is active.
2049
		 */
2050
		if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
2051
			add_head->state = I40E_FILTER_FAILED;
2052 2053 2054
		} else {
			add_head->state = I40E_FILTER_ACTIVE;
			retval++;
2055
		}
2056

2057 2058 2059
		add_head = i40e_next_filter(add_head);
		if (!add_head)
			break;
K
Kiran Patil 已提交
2060
	}
2061

2062
	return retval;
K
Kiran Patil 已提交
2063 2064
}

2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108
/**
 * i40e_aqc_del_filters - Request firmware to delete a set of filters
 * @vsi: ptr to the VSI
 * @vsi_name: name to display in messages
 * @list: the list of filters to send to firmware
 * @num_del: the number of filters to delete
 * @retval: Set to -EIO on failure to delete
 *
 * Send a request to firmware via AdminQ to delete a set of filters. Uses
 * *retval instead of a return value so that success does not force ret_val to
 * be set to 0. This ensures that a sequence of calls to this function
 * preserve the previous value of *retval on successful delete.
 */
static
void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
			  struct i40e_aqc_remove_macvlan_element_data *list,
			  int num_del, int *retval)
{
	struct i40e_hw *hw = &vsi->back->hw;
	i40e_status aq_ret;
	int aq_err;

	aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
	aq_err = hw->aq.asq_last_status;

	/* Explicitly ignore and do not report when firmware returns ENOENT */
	if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
		*retval = -EIO;
		dev_info(&vsi->back->pdev->dev,
			 "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
			 vsi_name, i40e_stat_str(hw, aq_ret),
			 i40e_aq_str(hw, aq_err));
	}
}

/**
 * i40e_aqc_add_filters - Request firmware to add a set of filters
 * @vsi: ptr to the VSI
 * @vsi_name: name to display in messages
 * @list: the list of filters to send to firmware
 * @add_head: Position in the add hlist
 * @num_add: the number of filters to add
 *
 * Send a request to firmware via AdminQ to add a chunk of filters. Will set
2109 2110
 * __I40E_VSI_OVERFLOW_PROMISC bit in vsi->state if the firmware has run out of
 * space for more filters.
2111 2112 2113 2114
 */
static
void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
			  struct i40e_aqc_add_macvlan_element_data *list,
2115
			  struct i40e_new_mac_filter *add_head,
2116
			  int num_add)
2117 2118 2119 2120
{
	struct i40e_hw *hw = &vsi->back->hw;
	int aq_err, fcnt;

2121
	i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
2122
	aq_err = hw->aq.asq_last_status;
2123
	fcnt = i40e_update_filter_state(num_add, list, add_head);
2124 2125

	if (fcnt != num_add) {
2126
		set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2127 2128 2129 2130 2131 2132 2133
		dev_warn(&vsi->back->pdev->dev,
			 "Error %s adding RX filters on %s, promiscuous mode forced on\n",
			 i40e_aq_str(hw, aq_err),
			 vsi_name);
	}
}

2134 2135 2136 2137 2138 2139 2140 2141
/**
 * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
 * @vsi: pointer to the VSI
 * @f: filter data
 *
 * This function sets or clears the promiscuous broadcast flags for VLAN
 * filters in order to properly receive broadcast frames. Assumes that only
 * broadcast filters are passed.
2142 2143
 *
 * Returns status indicating success or failure;
2144
 **/
2145 2146 2147
static i40e_status
i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
			  struct i40e_mac_filter *f)
2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165
{
	bool enable = f->state == I40E_FILTER_NEW;
	struct i40e_hw *hw = &vsi->back->hw;
	i40e_status aq_ret;

	if (f->vlan == I40E_VLAN_ANY) {
		aq_ret = i40e_aq_set_vsi_broadcast(hw,
						   vsi->seid,
						   enable,
						   NULL);
	} else {
		aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
							    vsi->seid,
							    enable,
							    f->vlan,
							    NULL);
	}

2166 2167
	if (aq_ret) {
		set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2168
		dev_warn(&vsi->back->pdev->dev,
2169
			 "Error %s, forcing overflow promiscuous on %s\n",
2170 2171
			 i40e_aq_str(hw, hw->aq.asq_last_status),
			 vsi_name);
2172
	}
2173 2174

	return aq_ret;
2175 2176
}

A
Alan Brady 已提交
2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243
/**
 * i40e_set_promiscuous - set promiscuous mode
 * @pf: board private structure
 * @promisc: promisc on or off
 *
 * There are different ways of setting promiscuous mode on a PF depending on
 * what state/environment we're in.  This identifies and sets it appropriately.
 * Returns 0 on success.
 **/
static int i40e_set_promiscuous(struct i40e_pf *pf, bool promisc)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_hw *hw = &pf->hw;
	i40e_status aq_ret;

	if (vsi->type == I40E_VSI_MAIN &&
	    pf->lan_veb != I40E_NO_VEB &&
	    !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
		/* set defport ON for Main VSI instead of true promisc
		 * this way we will get all unicast/multicast and VLAN
		 * promisc behavior but will not get VF or VMDq traffic
		 * replicated on the Main VSI.
		 */
		if (promisc)
			aq_ret = i40e_aq_set_default_vsi(hw,
							 vsi->seid,
							 NULL);
		else
			aq_ret = i40e_aq_clear_default_vsi(hw,
							   vsi->seid,
							   NULL);
		if (aq_ret) {
			dev_info(&pf->pdev->dev,
				 "Set default VSI failed, err %s, aq_err %s\n",
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
		}
	} else {
		aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
						  hw,
						  vsi->seid,
						  promisc, NULL,
						  true);
		if (aq_ret) {
			dev_info(&pf->pdev->dev,
				 "set unicast promisc failed, err %s, aq_err %s\n",
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
		}
		aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
						  hw,
						  vsi->seid,
						  promisc, NULL);
		if (aq_ret) {
			dev_info(&pf->pdev->dev,
				 "set multicast promisc failed, err %s, aq_err %s\n",
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
		}
	}

	if (!aq_ret)
		pf->cur_promisc = promisc;

	return aq_ret;
}

J
Jesse Brandeburg 已提交
2244 2245 2246 2247 2248 2249 2250 2251
/**
 * i40e_sync_vsi_filters - Update the VSI filter list to the HW
 * @vsi: ptr to the VSI
 *
 * Push any outstanding VSI filter changes through the AdminQ.
 *
 * Returns 0 or error value
 **/
J
Jesse Brandeburg 已提交
2252
int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
2253
{
2254
	struct hlist_head tmp_add_list, tmp_del_list;
2255 2256
	struct i40e_mac_filter *f;
	struct i40e_new_mac_filter *new, *add_head = NULL;
2257
	struct i40e_hw *hw = &vsi->back->hw;
2258
	bool old_overflow, new_overflow;
2259
	unsigned int failed_filters = 0;
2260
	unsigned int vlan_filters = 0;
2261
	char vsi_name[16] = "PF";
J
Jesse Brandeburg 已提交
2262
	int filter_list_len = 0;
M
Mitch Williams 已提交
2263
	i40e_status aq_ret = 0;
2264
	u32 changed_flags = 0;
2265
	struct hlist_node *h;
J
Jesse Brandeburg 已提交
2266 2267 2268
	struct i40e_pf *pf;
	int num_add = 0;
	int num_del = 0;
2269
	int retval = 0;
J
Jesse Brandeburg 已提交
2270
	u16 cmd_flags;
2271
	int list_size;
2272
	int bkt;
J
Jesse Brandeburg 已提交
2273 2274 2275 2276 2277

	/* empty array typed pointers, kcalloc later */
	struct i40e_aqc_add_macvlan_element_data *add_list;
	struct i40e_aqc_remove_macvlan_element_data *del_list;

2278
	while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
J
Jesse Brandeburg 已提交
2279 2280 2281
		usleep_range(1000, 2000);
	pf = vsi->back;

2282 2283
	old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);

J
Jesse Brandeburg 已提交
2284 2285 2286 2287 2288
	if (vsi->netdev) {
		changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
		vsi->current_netdev_flags = vsi->netdev->flags;
	}

2289 2290
	INIT_HLIST_HEAD(&tmp_add_list);
	INIT_HLIST_HEAD(&tmp_del_list);
K
Kiran Patil 已提交
2291

2292 2293 2294 2295 2296
	if (vsi->type == I40E_VSI_SRIOV)
		snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
	else if (vsi->type != I40E_VSI_MAIN)
		snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);

J
Jesse Brandeburg 已提交
2297 2298 2299
	if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
		vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;

2300
		spin_lock_bh(&vsi->mac_filter_hash_lock);
2301
		/* Create a list of filters to delete. */
2302
		hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2303 2304
			if (f->state == I40E_FILTER_REMOVE) {
				/* Move the element into temporary del_list */
2305 2306
				hash_del(&f->hlist);
				hlist_add_head(&f->hlist, &tmp_del_list);
2307 2308 2309

				/* Avoid counting removed filters */
				continue;
2310 2311
			}
			if (f->state == I40E_FILTER_NEW) {
2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322
				/* Create a temporary i40e_new_mac_filter */
				new = kzalloc(sizeof(*new), GFP_ATOMIC);
				if (!new)
					goto err_no_memory_locked;

				/* Store pointer to the real filter */
				new->f = f;
				new->state = f->state;

				/* Add it to the hash list */
				hlist_add_head(&new->hlist, &tmp_add_list);
K
Kiran Patil 已提交
2323
			}
2324

2325 2326 2327
			/* Count the number of active (current and new) VLAN
			 * filters we have now. Does not count filters which
			 * are marked for deletion.
2328 2329 2330 2331 2332
			 */
			if (f->vlan > 0)
				vlan_filters++;
		}

2333 2334 2335 2336 2337 2338
		retval = i40e_correct_mac_vlan_filters(vsi,
						       &tmp_add_list,
						       &tmp_del_list,
						       vlan_filters);
		if (retval)
			goto err_no_memory_locked;
2339

2340
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
K
Kiran Patil 已提交
2341 2342 2343
	}

	/* Now process 'del_list' outside the lock */
2344
	if (!hlist_empty(&tmp_del_list)) {
2345
		filter_list_len = hw->aq.asq_buf_size /
K
Kiran Patil 已提交
2346
			    sizeof(struct i40e_aqc_remove_macvlan_element_data);
2347
		list_size = filter_list_len *
S
Shannon Nelson 已提交
2348
			    sizeof(struct i40e_aqc_remove_macvlan_element_data);
2349
		del_list = kzalloc(list_size, GFP_ATOMIC);
2350 2351
		if (!del_list)
			goto err_no_memory;
K
Kiran Patil 已提交
2352

2353
		hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
J
Jesse Brandeburg 已提交
2354 2355
			cmd_flags = 0;

2356
			/* handle broadcast filters by updating the broadcast
2357
			 * promiscuous flag and release filter list.
2358 2359 2360 2361 2362 2363 2364 2365 2366
			 */
			if (is_broadcast_ether_addr(f->macaddr)) {
				i40e_aqc_broadcast_filter(vsi, vsi_name, f);

				hlist_del(&f->hlist);
				kfree(f);
				continue;
			}

J
Jesse Brandeburg 已提交
2367
			/* add to delete list */
2368
			ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2369 2370
			if (f->vlan == I40E_VLAN_ANY) {
				del_list[num_del].vlan_tag = 0;
A
Alan Brady 已提交
2371
				cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2372 2373 2374 2375
			} else {
				del_list[num_del].vlan_tag =
					cpu_to_le16((u16)(f->vlan));
			}
J
Jesse Brandeburg 已提交
2376 2377 2378 2379 2380 2381 2382

			cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
			del_list[num_del].flags = cmd_flags;
			num_del++;

			/* flush a full buffer */
			if (num_del == filter_list_len) {
2383 2384
				i40e_aqc_del_filters(vsi, vsi_name, del_list,
						     num_del, &retval);
2385
				memset(del_list, 0, list_size);
2386
				num_del = 0;
J
Jesse Brandeburg 已提交
2387
			}
K
Kiran Patil 已提交
2388 2389 2390
			/* Release memory for MAC filter entries which were
			 * synced up with HW.
			 */
2391
			hlist_del(&f->hlist);
K
Kiran Patil 已提交
2392
			kfree(f);
J
Jesse Brandeburg 已提交
2393
		}
K
Kiran Patil 已提交
2394

J
Jesse Brandeburg 已提交
2395
		if (num_del) {
2396 2397
			i40e_aqc_del_filters(vsi, vsi_name, del_list,
					     num_del, &retval);
J
Jesse Brandeburg 已提交
2398 2399 2400 2401
		}

		kfree(del_list);
		del_list = NULL;
K
Kiran Patil 已提交
2402 2403
	}

2404
	if (!hlist_empty(&tmp_add_list)) {
2405
		/* Do all the adds now. */
2406
		filter_list_len = hw->aq.asq_buf_size /
S
Shannon Nelson 已提交
2407
			       sizeof(struct i40e_aqc_add_macvlan_element_data);
2408 2409 2410
		list_size = filter_list_len *
			       sizeof(struct i40e_aqc_add_macvlan_element_data);
		add_list = kzalloc(list_size, GFP_ATOMIC);
2411 2412 2413
		if (!add_list)
			goto err_no_memory;

2414
		num_add = 0;
2415
		hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2416 2417 2418
			/* handle broadcast filters by updating the broadcast
			 * promiscuous flag instead of adding a MAC filter.
			 */
2419 2420 2421 2422 2423 2424
			if (is_broadcast_ether_addr(new->f->macaddr)) {
				if (i40e_aqc_broadcast_filter(vsi, vsi_name,
							      new->f))
					new->state = I40E_FILTER_FAILED;
				else
					new->state = I40E_FILTER_ACTIVE;
2425 2426 2427
				continue;
			}

J
Jesse Brandeburg 已提交
2428
			/* add to add array */
2429
			if (num_add == 0)
2430
				add_head = new;
2431
			cmd_flags = 0;
2432 2433 2434
			ether_addr_copy(add_list[num_add].mac_addr,
					new->f->macaddr);
			if (new->f->vlan == I40E_VLAN_ANY) {
2435 2436 2437 2438
				add_list[num_add].vlan_tag = 0;
				cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
			} else {
				add_list[num_add].vlan_tag =
2439
					cpu_to_le16((u16)(new->f->vlan));
2440
			}
J
Jesse Brandeburg 已提交
2441
			add_list[num_add].queue_number = 0;
2442
			/* set invalid match method for later detection */
2443
			add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
J
Jesse Brandeburg 已提交
2444 2445 2446 2447 2448 2449
			cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
			add_list[num_add].flags = cpu_to_le16(cmd_flags);
			num_add++;

			/* flush a full buffer */
			if (num_add == filter_list_len) {
2450
				i40e_aqc_add_filters(vsi, vsi_name, add_list,
2451
						     add_head, num_add);
2452
				memset(add_list, 0, list_size);
J
Jesse Brandeburg 已提交
2453 2454 2455 2456
				num_add = 0;
			}
		}
		if (num_add) {
2457
			i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2458
					     num_add);
J
Jesse Brandeburg 已提交
2459
		}
2460 2461 2462
		/* Now move all of the filters from the temp add list back to
		 * the VSI's list.
		 */
2463
		spin_lock_bh(&vsi->mac_filter_hash_lock);
2464 2465 2466 2467 2468 2469
		hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
			/* Only update the state if we're still NEW */
			if (new->f->state == I40E_FILTER_NEW)
				new->f->state = new->state;
			hlist_del(&new->hlist);
			kfree(new);
2470
		}
2471
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
J
Jesse Brandeburg 已提交
2472 2473
		kfree(add_list);
		add_list = NULL;
2474
	}
J
Jesse Brandeburg 已提交
2475

2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490
	/* Determine the number of active and failed filters. */
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	vsi->active_filters = 0;
	hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
		if (f->state == I40E_FILTER_ACTIVE)
			vsi->active_filters++;
		else if (f->state == I40E_FILTER_FAILED)
			failed_filters++;
	}
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	/* Check if we are able to exit overflow promiscuous mode. We can
	 * safely exit if we didn't just enter, we no longer have any failed
	 * filters, and we have reduced filters below the threshold value.
	 */
2491 2492
	if (old_overflow && !failed_filters &&
	    vsi->active_filters < vsi->promisc_threshold) {
2493 2494 2495
		dev_info(&pf->pdev->dev,
			 "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
			 vsi_name);
2496
		clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2497
		vsi->promisc_threshold = 0;
J
Jesse Brandeburg 已提交
2498 2499
	}

2500 2501
	/* if the VF is not trusted do not do promisc */
	if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2502
		clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2503 2504 2505
		goto out;
	}

2506 2507 2508 2509 2510 2511 2512 2513
	new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);

	/* If we are entering overflow promiscuous, we need to calculate a new
	 * threshold for when we are safe to exit
	 */
	if (!old_overflow && new_overflow)
		vsi->promisc_threshold = (vsi->active_filters * 3) / 4;

J
Jesse Brandeburg 已提交
2514 2515 2516
	/* check for changes in promiscuous modes */
	if (changed_flags & IFF_ALLMULTI) {
		bool cur_multipromisc;
J
Jesse Brandeburg 已提交
2517

J
Jesse Brandeburg 已提交
2518
		cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
M
Mitch Williams 已提交
2519 2520 2521 2522 2523 2524
		aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
							       vsi->seid,
							       cur_multipromisc,
							       NULL);
		if (aq_ret) {
			retval = i40e_aq_rc_to_posix(aq_ret,
2525
						     hw->aq.asq_last_status);
J
Jesse Brandeburg 已提交
2526
			dev_info(&pf->pdev->dev,
2527 2528
				 "set multi promisc failed on %s, err %s aq_err %s\n",
				 vsi_name,
2529 2530
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
M
Mitch Williams 已提交
2531
		}
J
Jesse Brandeburg 已提交
2532
	}
2533

2534
	if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
J
Jesse Brandeburg 已提交
2535
		bool cur_promisc;
J
Jesse Brandeburg 已提交
2536

J
Jesse Brandeburg 已提交
2537
		cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2538
			       new_overflow);
A
Alan Brady 已提交
2539
		aq_ret = i40e_set_promiscuous(pf, cur_promisc);
M
Mitch Williams 已提交
2540 2541
		if (aq_ret) {
			retval = i40e_aq_rc_to_posix(aq_ret,
A
Alan Brady 已提交
2542
						     hw->aq.asq_last_status);
2543
			dev_info(&pf->pdev->dev,
A
Alan Brady 已提交
2544 2545 2546 2547 2548
				 "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
				 cur_promisc ? "on" : "off",
				 vsi_name,
				 i40e_stat_str(hw, aq_ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
M
Mitch Williams 已提交
2549
		}
J
Jesse Brandeburg 已提交
2550
	}
M
Mitch Williams 已提交
2551
out:
2552 2553 2554 2555
	/* if something went wrong then set the changed flag so we try again */
	if (retval)
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;

2556
	clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
M
Mitch Williams 已提交
2557
	return retval;
2558 2559 2560 2561

err_no_memory:
	/* Restore elements on the temporary add and delete lists */
	spin_lock_bh(&vsi->mac_filter_hash_lock);
2562
err_no_memory_locked:
2563 2564
	i40e_undo_del_filter_entries(vsi, &tmp_del_list);
	i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2565 2566 2567
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

	vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2568
	clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2569
	return -ENOMEM;
J
Jesse Brandeburg 已提交
2570 2571 2572 2573 2574 2575 2576 2577 2578 2579
}

/**
 * i40e_sync_filters_subtask - Sync the VSI filter list with HW
 * @pf: board private structure
 **/
static void i40e_sync_filters_subtask(struct i40e_pf *pf)
{
	int v;

2580 2581 2582
	if (!pf)
		return;
	if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state))
J
Jesse Brandeburg 已提交
2583 2584
		return;

M
Mitch Williams 已提交
2585
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
2586
		if (pf->vsi[v] &&
J
Jesse Brandeburg 已提交
2587 2588 2589 2590 2591
		    (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
			int ret = i40e_sync_vsi_filters(pf->vsi[v]);

			if (ret) {
				/* come back and try again later */
2592 2593
				set_bit(__I40E_MACVLAN_SYNC_PENDING,
					pf->state);
J
Jesse Brandeburg 已提交
2594 2595 2596
				break;
			}
		}
J
Jesse Brandeburg 已提交
2597 2598 2599
	}
}

2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611
/**
 * i40e_max_xdp_frame_size - returns the maximum allowed frame size for XDP
 * @vsi: the vsi
 **/
static int i40e_max_xdp_frame_size(struct i40e_vsi *vsi)
{
	if (PAGE_SIZE >= 8192 || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
		return I40E_RXBUFFER_2048;
	else
		return I40E_RXBUFFER_3072;
}

J
Jesse Brandeburg 已提交
2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622
/**
 * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
 * @netdev: network interface device structure
 * @new_mtu: new value for maximum frame size
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
M
Mitch Williams 已提交
2623
	struct i40e_pf *pf = vsi->back;
J
Jesse Brandeburg 已提交
2624

2625 2626 2627 2628 2629 2630 2631
	if (i40e_enabled_xdp_vsi(vsi)) {
		int frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;

		if (frame_size > i40e_max_xdp_frame_size(vsi))
			return -EINVAL;
	}

J
Jesse Brandeburg 已提交
2632 2633 2634 2635 2636
	netdev_info(netdev, "changing MTU from %d to %d\n",
		    netdev->mtu, new_mtu);
	netdev->mtu = new_mtu;
	if (netif_running(netdev))
		i40e_vsi_reinit_locked(vsi);
2637 2638
	set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
	set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
J
Jesse Brandeburg 已提交
2639 2640 2641
	return 0;
}

J
Jacob Keller 已提交
2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662
/**
 * i40e_ioctl - Access the hwtstamp interface
 * @netdev: network interface device structure
 * @ifr: interface request data
 * @cmd: ioctl command
 **/
int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;

	switch (cmd) {
	case SIOCGHWTSTAMP:
		return i40e_ptp_get_ts_config(pf, ifr);
	case SIOCSHWTSTAMP:
		return i40e_ptp_set_ts_config(pf, ifr);
	default:
		return -EOPNOTSUPP;
	}
}

J
Jesse Brandeburg 已提交
2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681
/**
 * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
 * @vsi: the vsi being adjusted
 **/
void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
{
	struct i40e_vsi_context ctxt;
	i40e_status ret;

	if ((vsi->info.valid_sections &
	     cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
	    ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
		return;  /* already enabled */

	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
				    I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;

	ctxt.seid = vsi->seid;
2682
	ctxt.info = vsi->info;
J
Jesse Brandeburg 已提交
2683 2684 2685
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
2686 2687 2688 2689
			 "update vlan stripping failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712
	}
}

/**
 * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
 * @vsi: the vsi being adjusted
 **/
void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
{
	struct i40e_vsi_context ctxt;
	i40e_status ret;

	if ((vsi->info.valid_sections &
	     cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
	    ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
	     I40E_AQ_VSI_PVLAN_EMOD_MASK))
		return;  /* already disabled */

	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
				    I40E_AQ_VSI_PVLAN_EMOD_NOTHING;

	ctxt.seid = vsi->seid;
2713
	ctxt.info = vsi->info;
J
Jesse Brandeburg 已提交
2714 2715 2716
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
2717 2718 2719 2720
			 "update vlan stripping failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
2721 2722 2723 2724
	}
}

/**
2725
 * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
J
Jesse Brandeburg 已提交
2726 2727
 * @vsi: the vsi being configured
 * @vid: vlan id to be added (0 = untagged only , -1 = any)
2728 2729 2730 2731 2732 2733 2734 2735
 *
 * This is a helper function for adding a new MAC/VLAN filter with the
 * specified VLAN for each existing MAC address already in the hash table.
 * This function does *not* perform any accounting to update filters based on
 * VLAN mode.
 *
 * NOTE: this function expects to be called while under the
 * mac_filter_hash_lock
J
Jesse Brandeburg 已提交
2736
 **/
2737
int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
J
Jesse Brandeburg 已提交
2738
{
2739
	struct i40e_mac_filter *f, *add_f;
2740 2741
	struct hlist_node *h;
	int bkt;
J
Jesse Brandeburg 已提交
2742

2743
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2744 2745
		if (f->state == I40E_FILTER_REMOVE)
			continue;
2746
		add_f = i40e_add_filter(vsi, f->macaddr, vid);
J
Jesse Brandeburg 已提交
2747 2748 2749 2750 2751 2752 2753 2754
		if (!add_f) {
			dev_info(&vsi->back->pdev->dev,
				 "Could not add vlan filter %d for %pM\n",
				 vid, f->macaddr);
			return -ENOMEM;
		}
	}

2755 2756 2757 2758 2759 2760
	return 0;
}

/**
 * i40e_vsi_add_vlan - Add VSI membership for given VLAN
 * @vsi: the VSI being configured
2761
 * @vid: VLAN id to be added
2762
 **/
2763
int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2764
{
2765
	int err;
2766

2767
	if (vsi->info.pvid)
2768 2769
		return -EINVAL;

2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780
	/* The network stack will attempt to add VID=0, with the intention to
	 * receive priority tagged packets with a VLAN of 0. Our HW receives
	 * these packets by default when configured to receive untagged
	 * packets, so we don't need to add a filter for this case.
	 * Additionally, HW interprets adding a VID=0 filter as meaning to
	 * receive *only* tagged traffic and stops receiving untagged traffic.
	 * Thus, we do not want to actually add a filter for VID=0
	 */
	if (!vid)
		return 0;

2781 2782 2783
	/* Locked once because all functions invoked below iterates list*/
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	err = i40e_add_vlan_all_mac(vsi, vid);
2784
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
2785 2786
	if (err)
		return err;
K
Kiran Patil 已提交
2787

2788 2789 2790 2791 2792
	/* schedule our worker thread which will take care of
	 * applying the new filter changes
	 */
	i40e_service_event_schedule(vsi->back);
	return 0;
J
Jesse Brandeburg 已提交
2793 2794 2795
}

/**
2796
 * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
J
Jesse Brandeburg 已提交
2797 2798
 * @vsi: the vsi being configured
 * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2799 2800 2801 2802 2803 2804 2805 2806 2807
 *
 * This function should be used to remove all VLAN filters which match the
 * given VID. It does not schedule the service event and does not take the
 * mac_filter_hash_lock so it may be combined with other operations under
 * a single invocation of the mac_filter_hash_lock.
 *
 * NOTE: this function expects to be called while under the
 * mac_filter_hash_lock
 */
2808
void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
J
Jesse Brandeburg 已提交
2809
{
2810
	struct i40e_mac_filter *f;
2811 2812
	struct hlist_node *h;
	int bkt;
J
Jesse Brandeburg 已提交
2813

2814
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2815 2816 2817
		if (f->vlan == vid)
			__i40e_del_filter(vsi, f);
	}
2818
}
J
Jesse Brandeburg 已提交
2819

2820 2821 2822
/**
 * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
 * @vsi: the VSI being configured
2823
 * @vid: VLAN id to be removed
2824
 **/
2825
void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
2826
{
2827 2828 2829
	if (!vid || vsi->info.pvid)
		return;

2830 2831
	spin_lock_bh(&vsi->mac_filter_hash_lock);
	i40e_rm_vlan_all_mac(vsi, vid);
2832
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
K
Kiran Patil 已提交
2833

2834 2835 2836 2837
	/* schedule our worker thread which will take care of
	 * applying the new filter changes
	 */
	i40e_service_event_schedule(vsi->back);
J
Jesse Brandeburg 已提交
2838 2839 2840 2841 2842 2843
}

/**
 * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
 * @netdev: network interface to be adjusted
 * @vid: vlan id to be added
J
Jesse Brandeburg 已提交
2844 2845
 *
 * net_device_ops implementation for adding vlan ids
J
Jesse Brandeburg 已提交
2846 2847 2848 2849 2850 2851
 **/
static int i40e_vlan_rx_add_vid(struct net_device *netdev,
				__always_unused __be16 proto, u16 vid)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
J
Jesse Brandeburg 已提交
2852
	int ret = 0;
J
Jesse Brandeburg 已提交
2853

2854
	if (vid >= VLAN_N_VID)
J
Jesse Brandeburg 已提交
2855 2856
		return -EINVAL;

2857
	ret = i40e_vsi_add_vlan(vsi, vid);
2858
	if (!ret)
J
Jesse Brandeburg 已提交
2859
		set_bit(vid, vsi->active_vlans);
J
Jesse Brandeburg 已提交
2860

J
Jesse Brandeburg 已提交
2861
	return ret;
J
Jesse Brandeburg 已提交
2862 2863 2864 2865 2866 2867
}

/**
 * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
 * @netdev: network interface to be adjusted
 * @vid: vlan id to be removed
J
Jesse Brandeburg 已提交
2868
 *
A
Akeem G Abodunrin 已提交
2869
 * net_device_ops implementation for removing vlan ids
J
Jesse Brandeburg 已提交
2870 2871 2872 2873 2874 2875 2876 2877 2878
 **/
static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
				 __always_unused __be16 proto, u16 vid)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

	/* return code is ignored as there is nothing a user
	 * can do about failure to remove and a log message was
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2879
	 * already printed from the other function
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2880 2881 2882 2883
	 */
	i40e_vsi_kill_vlan(vsi, vid);

	clear_bit(vid, vsi->active_vlans);
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2884

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2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898
	return 0;
}

/**
 * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
 * @vsi: the vsi being brought back up
 **/
static void i40e_restore_vlan(struct i40e_vsi *vsi)
{
	u16 vid;

	if (!vsi->netdev)
		return;

2899 2900 2901 2902
	if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
		i40e_vlan_stripping_enable(vsi);
	else
		i40e_vlan_stripping_disable(vsi);
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2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913

	for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
		i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
				     vid);
}

/**
 * i40e_vsi_add_pvid - Add pvid for the VSI
 * @vsi: the vsi being adjusted
 * @vid: the vlan id to set as a PVID
 **/
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2914
int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
J
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2915 2916
{
	struct i40e_vsi_context ctxt;
2917
	i40e_status ret;
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2918 2919 2920

	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.pvid = cpu_to_le16(vid);
G
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2921 2922
	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
				    I40E_AQ_VSI_PVLAN_INSERT_PVID |
G
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2923
				    I40E_AQ_VSI_PVLAN_EMOD_STR;
J
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2924 2925

	ctxt.seid = vsi->seid;
2926
	ctxt.info = vsi->info;
2927 2928
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
J
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2929
		dev_info(&vsi->back->pdev->dev,
2930 2931 2932 2933
			 "add pvid failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
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2934
		return -ENOENT;
J
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2935 2936
	}

J
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2937
	return 0;
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2938 2939 2940 2941 2942 2943 2944 2945 2946 2947
}

/**
 * i40e_vsi_remove_pvid - Remove the pvid from the VSI
 * @vsi: the vsi being adjusted
 *
 * Just use the vlan_rx_register() service to put it back to normal
 **/
void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
{
G
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2948 2949
	i40e_vlan_stripping_disable(vsi);

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2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967
	vsi->info.pvid = 0;
}

/**
 * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
 * @vsi: ptr to the VSI
 *
 * If this function returns with an error, then it's possible one or
 * more of the rings is populated (while the rest are not).  It is the
 * callers duty to clean those orphaned rings.
 *
 * Return 0 on success, negative on failure
 **/
static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
{
	int i, err = 0;

	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2968
		err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
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2969

2970 2971 2972 2973 2974 2975
	if (!i40e_enabled_xdp_vsi(vsi))
		return err;

	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
		err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);

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2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988
	return err;
}

/**
 * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
 * @vsi: ptr to the VSI
 *
 * Free VSI's transmit software resources
 **/
static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
{
	int i;

2989 2990 2991 2992 2993
	if (vsi->tx_rings) {
		for (i = 0; i < vsi->num_queue_pairs; i++)
			if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
				i40e_free_tx_resources(vsi->tx_rings[i]);
	}
2994

2995 2996 2997 2998 2999
	if (vsi->xdp_rings) {
		for (i = 0; i < vsi->num_queue_pairs; i++)
			if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
				i40e_free_tx_resources(vsi->xdp_rings[i]);
	}
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3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016
}

/**
 * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
 * @vsi: ptr to the VSI
 *
 * If this function returns with an error, then it's possible one or
 * more of the rings is populated (while the rest are not).  It is the
 * callers duty to clean those orphaned rings.
 *
 * Return 0 on success, negative on failure
 **/
static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
{
	int i, err = 0;

	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3017
		err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
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3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030
	return err;
}

/**
 * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
 * @vsi: ptr to the VSI
 *
 * Free all receive software resources
 **/
static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
{
	int i;

3031 3032 3033
	if (!vsi->rx_rings)
		return;

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3034
	for (i = 0; i < vsi->num_queue_pairs; i++)
3035
		if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
3036
			i40e_free_rx_resources(vsi->rx_rings[i]);
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3037 3038
}

3039 3040 3041 3042 3043 3044 3045 3046 3047
/**
 * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
 * @ring: The Tx ring to configure
 *
 * This enables/disables XPS for a given Tx descriptor ring
 * based on the TCs enabled for the VSI that ring belongs to.
 **/
static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
{
3048
	int cpu;
3049

3050
	if (!ring->q_vector || !ring->netdev || ring->ch)
3051 3052
		return;

J
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3053 3054 3055
	/* We only initialize XPS once, so as not to overwrite user settings */
	if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
		return;
3056

J
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3057 3058 3059
	cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
	netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
			    ring->queue_index);
3060 3061
}

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3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077
/**
 * i40e_configure_tx_ring - Configure a transmit ring context and rest
 * @ring: The Tx ring to configure
 *
 * Configure the Tx descriptor ring in the HMC context.
 **/
static int i40e_configure_tx_ring(struct i40e_ring *ring)
{
	struct i40e_vsi *vsi = ring->vsi;
	u16 pf_q = vsi->base_queue + ring->queue_index;
	struct i40e_hw *hw = &vsi->back->hw;
	struct i40e_hmc_obj_txq tx_ctx;
	i40e_status err = 0;
	u32 qtx_ctl = 0;

	/* some ATR related tx ring init */
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3078
	if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
J
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3079 3080 3081 3082 3083 3084
		ring->atr_sample_rate = vsi->back->atr_sample_rate;
		ring->atr_count = 0;
	} else {
		ring->atr_sample_rate = 0;
	}

3085 3086
	/* configure XPS */
	i40e_config_xps_tx_ring(ring);
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3087 3088 3089 3090 3091 3092 3093

	/* clear the context structure first */
	memset(&tx_ctx, 0, sizeof(tx_ctx));

	tx_ctx.new_context = 1;
	tx_ctx.base = (ring->dma / 128);
	tx_ctx.qlen = ring->count;
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3094 3095
	tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
					       I40E_FLAG_FD_ATR_ENABLED));
J
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3096
	tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3097 3098 3099 3100 3101
	/* FDIR VSI tx ring can still use RS bit and writebacks */
	if (vsi->type != I40E_VSI_FDIR)
		tx_ctx.head_wb_ena = 1;
	tx_ctx.head_wb_addr = ring->dma +
			      (ring->count * sizeof(struct i40e_tx_desc));
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3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112

	/* As part of VSI creation/update, FW allocates certain
	 * Tx arbitration queue sets for each TC enabled for
	 * the VSI. The FW returns the handles to these queue
	 * sets as part of the response buffer to Add VSI,
	 * Update VSI, etc. AQ commands. It is expected that
	 * these queue set handles be associated with the Tx
	 * queues by the driver as part of the TX queue context
	 * initialization. This has to be done regardless of
	 * DCB as by default everything is mapped to TC0.
	 */
3113 3114 3115 3116 3117 3118 3119 3120

	if (ring->ch)
		tx_ctx.rdylist =
			le16_to_cpu(ring->ch->info.qs_handle[ring->dcb_tc]);

	else
		tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);

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3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141
	tx_ctx.rdylist_act = 0;

	/* clear the context in the HMC */
	err = i40e_clear_lan_tx_queue_context(hw, pf_q);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* set the context in the HMC */
	err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* Now associate this queue with this PCI function */
3142 3143 3144 3145 3146 3147 3148 3149 3150
	if (ring->ch) {
		if (ring->ch->type == I40E_VSI_VMDQ2)
			qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
		else
			return -EINVAL;

		qtx_ctl |= (ring->ch->vsi_number <<
			    I40E_QTX_CTL_VFVM_INDX_SHIFT) &
			    I40E_QTX_CTL_VFVM_INDX_MASK;
M
Mitch Williams 已提交
3151
	} else {
3152 3153 3154 3155 3156 3157 3158
		if (vsi->type == I40E_VSI_VMDQ2) {
			qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
			qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
				    I40E_QTX_CTL_VFVM_INDX_MASK;
		} else {
			qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
		}
M
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3159 3160
	}

3161 3162
	qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
		    I40E_QTX_CTL_PF_INDX_MASK);
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3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186
	wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
	i40e_flush(hw);

	/* cache tail off for easier writes later */
	ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);

	return 0;
}

/**
 * i40e_configure_rx_ring - Configure a receive ring context
 * @ring: The Rx ring to configure
 *
 * Configure the Rx descriptor ring in the HMC context.
 **/
static int i40e_configure_rx_ring(struct i40e_ring *ring)
{
	struct i40e_vsi *vsi = ring->vsi;
	u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
	u16 pf_q = vsi->base_queue + ring->queue_index;
	struct i40e_hw *hw = &vsi->back->hw;
	struct i40e_hmc_obj_rxq rx_ctx;
	i40e_status err = 0;

3187
	bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
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3188 3189 3190 3191 3192 3193

	/* clear the context structure first */
	memset(&rx_ctx, 0, sizeof(rx_ctx));

	ring->rx_buf_len = vsi->rx_buf_len;

3194 3195
	rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
				    BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
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3196 3197 3198 3199

	rx_ctx.base = (ring->dma / 128);
	rx_ctx.qlen = ring->count;

3200 3201
	/* use 32 byte descriptors */
	rx_ctx.dsize = 1;
J
Jesse Brandeburg 已提交
3202

3203 3204 3205
	/* descriptor type is always zero
	 * rx_ctx.dtype = 0;
	 */
3206
	rx_ctx.hsplit_0 = 0;
J
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3207

3208
	rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3209 3210 3211
	if (hw->revision_id == 0)
		rx_ctx.lrxqthresh = 0;
	else
J
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3212
		rx_ctx.lrxqthresh = 1;
J
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3213 3214
	rx_ctx.crcstrip = 1;
	rx_ctx.l2tsel = 1;
J
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3215 3216
	/* this controls whether VLAN is stripped from inner headers */
	rx_ctx.showiv = 0;
3217 3218
	/* set the prefena field to 1 because the manual says to */
	rx_ctx.prefena = 1;
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3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237

	/* clear the context in the HMC */
	err = i40e_clear_lan_rx_queue_context(hw, pf_q);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* set the context in the HMC */
	err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

3238 3239 3240 3241 3242 3243
	/* configure Rx buffer alignment */
	if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
		clear_ring_build_skb_enabled(ring);
	else
		set_ring_build_skb_enabled(ring);

J
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3244 3245 3246 3247
	/* cache tail for quicker writes, and clear the reg before use */
	ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
	writel(0, ring->tail);

3248
	i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
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3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263

	return 0;
}

/**
 * i40e_vsi_configure_tx - Configure the VSI for Tx
 * @vsi: VSI structure describing this set of rings and resources
 *
 * Configure the Tx VSI for operation.
 **/
static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
{
	int err = 0;
	u16 i;

3264 3265
	for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
		err = i40e_configure_tx_ring(vsi->tx_rings[i]);
J
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3266

3267 3268 3269 3270 3271 3272
	if (!i40e_enabled_xdp_vsi(vsi))
		return err;

	for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
		err = i40e_configure_tx_ring(vsi->xdp_rings[i]);

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3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286
	return err;
}

/**
 * i40e_vsi_configure_rx - Configure the VSI for Rx
 * @vsi: the VSI being configured
 *
 * Configure the Rx VSI for operation.
 **/
static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
{
	int err = 0;
	u16 i;

3287 3288 3289 3290
	if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
		vsi->max_frame = I40E_MAX_RXBUFFER;
		vsi->rx_buf_len = I40E_RXBUFFER_2048;
#if (PAGE_SIZE < 8192)
3291 3292
	} else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
		   (vsi->netdev->mtu <= ETH_DATA_LEN)) {
3293 3294 3295 3296 3297
		vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
		vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
#endif
	} else {
		vsi->max_frame = I40E_MAX_RXBUFFER;
3298 3299
		vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
						       I40E_RXBUFFER_2048;
3300
	}
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3301 3302 3303

	/* set up individual rings */
	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3304
		err = i40e_configure_rx_ring(vsi->rx_rings[i]);
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3305 3306 3307 3308 3309 3310 3311 3312 3313 3314

	return err;
}

/**
 * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
 * @vsi: ptr to the VSI
 **/
static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
{
3315
	struct i40e_ring *tx_ring, *rx_ring;
J
Jesse Brandeburg 已提交
3316 3317 3318
	u16 qoffset, qcount;
	int i, n;

3319 3320 3321 3322 3323 3324 3325 3326
	if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
		/* Reset the TC information */
		for (i = 0; i < vsi->num_queue_pairs; i++) {
			rx_ring = vsi->rx_rings[i];
			tx_ring = vsi->tx_rings[i];
			rx_ring->dcb_tc = 0;
			tx_ring->dcb_tc = 0;
		}
3327
		return;
3328
	}
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3329 3330

	for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3331
		if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
J
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3332 3333 3334 3335 3336
			continue;

		qoffset = vsi->tc_config.tc_info[n].qoffset;
		qcount = vsi->tc_config.tc_info[n].qcount;
		for (i = qoffset; i < (qoffset + qcount); i++) {
3337 3338
			rx_ring = vsi->rx_rings[i];
			tx_ring = vsi->tx_rings[i];
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3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354
			rx_ring->dcb_tc = n;
			tx_ring->dcb_tc = n;
		}
	}
}

/**
 * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
 * @vsi: ptr to the VSI
 **/
static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
{
	if (vsi->netdev)
		i40e_set_rx_mode(vsi->netdev);
}

3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367
/**
 * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
 * @vsi: Pointer to the targeted VSI
 *
 * This function replays the hlist on the hw where all the SB Flow Director
 * filters were saved.
 **/
static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
{
	struct i40e_fdir_filter *filter;
	struct i40e_pf *pf = vsi->back;
	struct hlist_node *node;

3368 3369 3370
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
		return;

3371
	/* Reset FDir counters as we're replaying all existing filters */
3372 3373
	pf->fd_tcp4_filter_cnt = 0;
	pf->fd_udp4_filter_cnt = 0;
3374
	pf->fd_sctp4_filter_cnt = 0;
3375
	pf->fd_ip4_filter_cnt = 0;
3376

3377 3378 3379 3380 3381 3382
	hlist_for_each_entry_safe(filter, node,
				  &pf->fdir_filter_list, fdir_node) {
		i40e_add_del_fdir(vsi, filter, true);
	}
}

J
Jesse Brandeburg 已提交
3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406
/**
 * i40e_vsi_configure - Set up the VSI for action
 * @vsi: the VSI being configured
 **/
static int i40e_vsi_configure(struct i40e_vsi *vsi)
{
	int err;

	i40e_set_vsi_rx_mode(vsi);
	i40e_restore_vlan(vsi);
	i40e_vsi_config_dcb_rings(vsi);
	err = i40e_vsi_configure_tx(vsi);
	if (!err)
		err = i40e_vsi_configure_rx(vsi);

	return err;
}

/**
 * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
 * @vsi: the VSI being configured
 **/
static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
{
3407
	bool has_xdp = i40e_enabled_xdp_vsi(vsi);
J
Jesse Brandeburg 已提交
3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 vector;
	int i, q;
	u32 qp;

	/* The interrupt indexing is offset by 1 in the PFINT_ITRn
	 * and PFINT_LNKLSTn registers, e.g.:
	 *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
	 */
	qp = vsi->base_queue;
	vector = vsi->base_vector;
3420
	for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3421 3422
		struct i40e_q_vector *q_vector = vsi->q_vectors[i];

3423
		q_vector->rx.next_update = jiffies + 1;
3424 3425
		q_vector->rx.target_itr =
			ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
J
Jesse Brandeburg 已提交
3426
		wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3427 3428
		     q_vector->rx.target_itr);
		q_vector->rx.current_itr = q_vector->rx.target_itr;
3429 3430

		q_vector->tx.next_update = jiffies + 1;
3431 3432
		q_vector->tx.target_itr =
			ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
J
Jesse Brandeburg 已提交
3433
		wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3434 3435
		     q_vector->tx.target_itr);
		q_vector->tx.current_itr = q_vector->tx.target_itr;
3436

3437
		wr32(hw, I40E_PFINT_RATEN(vector - 1),
3438
		     i40e_intrl_usec_to_reg(vsi->int_rate_limit));
J
Jesse Brandeburg 已提交
3439 3440 3441 3442

		/* Linked list for the queuepairs assigned to this vector */
		wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
		for (q = 0; q < q_vector->num_ringpairs; q++) {
3443
			u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
3444 3445
			u32 val;

J
Jesse Brandeburg 已提交
3446
			val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3447 3448 3449 3450 3451
			      (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
			      (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
			      (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
			      (I40E_QUEUE_TYPE_TX <<
			       I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
J
Jesse Brandeburg 已提交
3452 3453 3454

			wr32(hw, I40E_QINT_RQCTL(qp), val);

3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465
			if (has_xdp) {
				val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
				      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
				      (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
				      (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
				      (I40E_QUEUE_TYPE_TX <<
				       I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

				wr32(hw, I40E_QINT_TQCTL(nextqp), val);
			}

J
Jesse Brandeburg 已提交
3466
			val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3467 3468 3469 3470 3471
			      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
			      (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
			      ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
			      (I40E_QUEUE_TYPE_RX <<
			       I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
J
Jesse Brandeburg 已提交
3472 3473 3474

			/* Terminate the linked list */
			if (q == (q_vector->num_ringpairs - 1))
3475 3476
				val |= (I40E_QUEUE_END_OF_LIST <<
					I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
J
Jesse Brandeburg 已提交
3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489

			wr32(hw, I40E_QINT_TQCTL(qp), val);
			qp++;
		}
	}

	i40e_flush(hw);
}

/**
 * i40e_enable_misc_int_causes - enable the non-queue interrupts
 * @hw: ptr to the hardware info
 **/
3490
static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
3491
{
3492
	struct i40e_hw *hw = &pf->hw;
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3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507
	u32 val;

	/* clear things first */
	wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
	rd32(hw, I40E_PFINT_ICR0);         /* read to clear */

	val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
	      I40E_PFINT_ICR0_ENA_GRST_MASK          |
	      I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
	      I40E_PFINT_ICR0_ENA_GPIO_MASK          |
	      I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_VFLR_MASK          |
	      I40E_PFINT_ICR0_ENA_ADMINQ_MASK;

3508 3509 3510
	if (pf->flags & I40E_FLAG_IWARP_ENABLED)
		val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;

3511 3512 3513
	if (pf->flags & I40E_FLAG_PTP)
		val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;

J
Jesse Brandeburg 已提交
3514 3515 3516
	wr32(hw, I40E_PFINT_ICR0_ENA, val);

	/* SW_ITR_IDX = 0, but don't change INTENA */
3517 3518
	wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
					I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
J
Jesse Brandeburg 已提交
3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529

	/* OTHER_ITR_IDX = 0 */
	wr32(hw, I40E_PFINT_STAT_CTL0, 0);
}

/**
 * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
 * @vsi: the VSI being configured
 **/
static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
{
3530
	u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
3531
	struct i40e_q_vector *q_vector = vsi->q_vectors[0];
J
Jesse Brandeburg 已提交
3532 3533 3534 3535 3536
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	/* set the ITR configuration */
3537
	q_vector->rx.next_update = jiffies + 1;
3538 3539 3540
	q_vector->rx.target_itr = ITR_TO_REG(vsi->rx_rings[0]->itr_setting);
	wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.target_itr);
	q_vector->rx.current_itr = q_vector->rx.target_itr;
3541
	q_vector->tx.next_update = jiffies + 1;
3542 3543 3544
	q_vector->tx.target_itr = ITR_TO_REG(vsi->tx_rings[0]->itr_setting);
	wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.target_itr);
	q_vector->tx.current_itr = q_vector->tx.target_itr;
J
Jesse Brandeburg 已提交
3545

3546
	i40e_enable_misc_int_causes(pf);
J
Jesse Brandeburg 已提交
3547 3548 3549 3550

	/* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
	wr32(hw, I40E_PFINT_LNKLST0, 0);

3551
	/* Associate the queue pair to the vector and enable the queue int */
3552 3553 3554
	val = I40E_QINT_RQCTL_CAUSE_ENA_MASK		       |
	      (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
	      (nextqp	   << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
J
Jesse Brandeburg 已提交
3555 3556 3557 3558
	      (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

	wr32(hw, I40E_QINT_RQCTL(0), val);

3559 3560 3561 3562 3563 3564 3565 3566 3567
	if (i40e_enabled_xdp_vsi(vsi)) {
		val = I40E_QINT_TQCTL_CAUSE_ENA_MASK		     |
		      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
		      (I40E_QUEUE_TYPE_TX
		       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

	       wr32(hw, I40E_QINT_TQCTL(nextqp), val);
	}

J
Jesse Brandeburg 已提交
3568 3569 3570 3571 3572 3573 3574 3575
	val = I40E_QINT_TQCTL_CAUSE_ENA_MASK		      |
	      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
	      (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);

	wr32(hw, I40E_QINT_TQCTL(0), val);
	i40e_flush(hw);
}

3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588
/**
 * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
 * @pf: board private structure
 **/
void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;

	wr32(hw, I40E_PFINT_DYN_CTL0,
	     I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
	i40e_flush(hw);
}

J
Jesse Brandeburg 已提交
3589 3590 3591 3592
/**
 * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
 * @pf: board private structure
 **/
3593
void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
3594 3595 3596 3597 3598
{
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3599
	      I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
J
Jesse Brandeburg 已提交
3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614
	      (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);

	wr32(hw, I40E_PFINT_DYN_CTL0, val);
	i40e_flush(hw);
}

/**
 * i40e_msix_clean_rings - MSIX mode Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 **/
static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
{
	struct i40e_q_vector *q_vector = data;

3615
	if (!q_vector->tx.ring && !q_vector->rx.ring)
J
Jesse Brandeburg 已提交
3616 3617
		return IRQ_HANDLED;

3618
	napi_schedule_irqoff(&q_vector->napi);
J
Jesse Brandeburg 已提交
3619 3620 3621 3622

	return IRQ_HANDLED;
}

3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636
/**
 * i40e_irq_affinity_notify - Callback for affinity changes
 * @notify: context as to what irq was changed
 * @mask: the new affinity mask
 *
 * This is a callback function used by the irq_set_affinity_notifier function
 * so that we may register to receive changes to the irq affinity masks.
 **/
static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
				     const cpumask_t *mask)
{
	struct i40e_q_vector *q_vector =
		container_of(notify, struct i40e_q_vector, affinity_notify);

3637
	cpumask_copy(&q_vector->affinity_mask, mask);
3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649
}

/**
 * i40e_irq_affinity_release - Callback for affinity notifier release
 * @ref: internal core kernel usage
 *
 * This is a callback function used by the irq_set_affinity_notifier function
 * to inform the current notification subscriber that they will no longer
 * receive notifications.
 **/
static void i40e_irq_affinity_release(struct kref *ref) {}

J
Jesse Brandeburg 已提交
3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664
/**
 * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
 * @vsi: the VSI being configured
 * @basename: name for the vector
 *
 * Allocates MSI-X vectors and requests interrupts from the kernel.
 **/
static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
{
	int q_vectors = vsi->num_q_vectors;
	struct i40e_pf *pf = vsi->back;
	int base = vsi->base_vector;
	int rx_int_idx = 0;
	int tx_int_idx = 0;
	int vector, err;
3665
	int irq_num;
3666
	int cpu;
J
Jesse Brandeburg 已提交
3667 3668

	for (vector = 0; vector < q_vectors; vector++) {
3669
		struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
J
Jesse Brandeburg 已提交
3670

3671 3672
		irq_num = pf->msix_entries[base + vector].vector;

3673
		if (q_vector->tx.ring && q_vector->rx.ring) {
J
Jesse Brandeburg 已提交
3674 3675 3676
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
			tx_int_idx++;
3677
		} else if (q_vector->rx.ring) {
J
Jesse Brandeburg 已提交
3678 3679
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "rx", rx_int_idx++);
3680
		} else if (q_vector->tx.ring) {
J
Jesse Brandeburg 已提交
3681 3682 3683 3684 3685 3686
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "tx", tx_int_idx++);
		} else {
			/* skip this unused q_vector */
			continue;
		}
3687
		err = request_irq(irq_num,
J
Jesse Brandeburg 已提交
3688 3689 3690 3691 3692 3693
				  vsi->irq_handler,
				  0,
				  q_vector->name,
				  q_vector);
		if (err) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
3694
				 "MSIX request_irq failed, error: %d\n", err);
J
Jesse Brandeburg 已提交
3695 3696
			goto free_queue_irqs;
		}
3697 3698 3699 3700 3701

		/* register for affinity change notifications */
		q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
		q_vector->affinity_notify.release = i40e_irq_affinity_release;
		irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3702 3703 3704 3705 3706
		/* Spread affinity hints out across online CPUs.
		 *
		 * get_cpu_mask returns a static constant mask with
		 * a permanent lifetime so it's ok to pass to
		 * irq_set_affinity_hint without making a copy.
3707
		 */
3708 3709
		cpu = cpumask_local_spread(q_vector->v_idx, -1);
		irq_set_affinity_hint(irq_num, get_cpu_mask(cpu));
J
Jesse Brandeburg 已提交
3710 3711
	}

3712
	vsi->irqs_ready = true;
J
Jesse Brandeburg 已提交
3713 3714 3715 3716 3717
	return 0;

free_queue_irqs:
	while (vector) {
		vector--;
3718 3719 3720 3721
		irq_num = pf->msix_entries[base + vector].vector;
		irq_set_affinity_notifier(irq_num, NULL);
		irq_set_affinity_hint(irq_num, NULL);
		free_irq(irq_num, &vsi->q_vectors[vector]);
J
Jesse Brandeburg 已提交
3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736
	}
	return err;
}

/**
 * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
 * @vsi: the VSI being un-configured
 **/
static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int base = vsi->base_vector;
	int i;

S
Shannon Nelson 已提交
3737
	/* disable interrupt causation from each queue */
J
Jesse Brandeburg 已提交
3738
	for (i = 0; i < vsi->num_queue_pairs; i++) {
S
Shannon Nelson 已提交
3739 3740 3741 3742 3743 3744 3745 3746 3747 3748
		u32 val;

		val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
		val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
		wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);

		val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
		val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
		wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);

3749 3750 3751
		if (!i40e_enabled_xdp_vsi(vsi))
			continue;
		wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
J
Jesse Brandeburg 已提交
3752 3753
	}

S
Shannon Nelson 已提交
3754
	/* disable each interrupt */
J
Jesse Brandeburg 已提交
3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = vsi->base_vector;
		     i < (vsi->num_q_vectors + vsi->base_vector); i++)
			wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);

		i40e_flush(hw);
		for (i = 0; i < vsi->num_q_vectors; i++)
			synchronize_irq(pf->msix_entries[i + base].vector);
	} else {
		/* Legacy and MSI mode - this stops all interrupt handling */
		wr32(hw, I40E_PFINT_ICR0_ENA, 0);
		wr32(hw, I40E_PFINT_DYN_CTL0, 0);
		i40e_flush(hw);
		synchronize_irq(pf->pdev->irq);
	}
}

/**
 * i40e_vsi_enable_irq - Enable IRQ for the given VSI
 * @vsi: the VSI being configured
 **/
static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int i;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3782
		for (i = 0; i < vsi->num_q_vectors; i++)
J
Jesse Brandeburg 已提交
3783 3784
			i40e_irq_dynamic_enable(vsi, i);
	} else {
3785
		i40e_irq_dynamic_enable_icr0(pf);
J
Jesse Brandeburg 已提交
3786 3787
	}

3788
	i40e_flush(&pf->hw);
J
Jesse Brandeburg 已提交
3789 3790 3791 3792
	return 0;
}

/**
3793
 * i40e_free_misc_vector - Free the vector that handles non-queue events
J
Jesse Brandeburg 已提交
3794 3795
 * @pf: board private structure
 **/
3796
static void i40e_free_misc_vector(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
3797 3798 3799 3800
{
	/* Disable ICR 0 */
	wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
	i40e_flush(&pf->hw);
3801 3802 3803 3804 3805 3806

	if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
		synchronize_irq(pf->msix_entries[0].vector);
		free_irq(pf->msix_entries[0].vector, pf);
		clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
	}
J
Jesse Brandeburg 已提交
3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821
}

/**
 * i40e_intr - MSI/Legacy and non-queue interrupt handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 *
 * This is the handler used for all MSI/Legacy interrupts, and deals
 * with both queue and non-queue interrupts.  This is also used in
 * MSIX mode to handle the non-queue interrupts.
 **/
static irqreturn_t i40e_intr(int irq, void *data)
{
	struct i40e_pf *pf = (struct i40e_pf *)data;
	struct i40e_hw *hw = &pf->hw;
3822
	irqreturn_t ret = IRQ_NONE;
J
Jesse Brandeburg 已提交
3823 3824 3825 3826
	u32 icr0, icr0_remaining;
	u32 val, ena_mask;

	icr0 = rd32(hw, I40E_PFINT_ICR0);
3827
	ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
J
Jesse Brandeburg 已提交
3828

3829 3830
	/* if sharing a legacy IRQ, we might get called w/o an intr pending */
	if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3831
		goto enable_intr;
J
Jesse Brandeburg 已提交
3832

S
Shannon Nelson 已提交
3833 3834 3835 3836 3837
	/* if interrupt but no bits showing, must be SWINT */
	if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
	    (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
		pf->sw_int_count++;

3838
	if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3839
	    (icr0 & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3840
		ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3841
		dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3842
		set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
3843 3844
	}

J
Jesse Brandeburg 已提交
3845 3846
	/* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
	if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3847 3848
		struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
		struct i40e_q_vector *q_vector = vsi->q_vectors[0];
J
Jesse Brandeburg 已提交
3849

3850 3851 3852 3853 3854 3855
		/* We do not have a way to disarm Queue causes while leaving
		 * interrupt enabled for all other causes, ideally
		 * interrupt should be disabled while we are in NAPI but
		 * this is not a performance path and napi_schedule()
		 * can deal with rescheduling.
		 */
3856
		if (!test_bit(__I40E_DOWN, pf->state))
3857
			napi_schedule_irqoff(&q_vector->napi);
J
Jesse Brandeburg 已提交
3858 3859 3860 3861
	}

	if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3862
		set_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
3863
		i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
J
Jesse Brandeburg 已提交
3864 3865 3866 3867
	}

	if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3868
		set_bit(__I40E_MDD_EVENT_PENDING, pf->state);
J
Jesse Brandeburg 已提交
3869 3870 3871 3872
	}

	if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3873
		set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
J
Jesse Brandeburg 已提交
3874 3875 3876
	}

	if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3877 3878
		if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
			set_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
J
Jesse Brandeburg 已提交
3879 3880 3881 3882
		ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
		val = rd32(hw, I40E_GLGEN_RSTAT);
		val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
		       >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3883
		if (val == I40E_RESET_CORER) {
J
Jesse Brandeburg 已提交
3884
			pf->corer_count++;
3885
		} else if (val == I40E_RESET_GLOBR) {
J
Jesse Brandeburg 已提交
3886
			pf->globr_count++;
3887
		} else if (val == I40E_RESET_EMPR) {
J
Jesse Brandeburg 已提交
3888
			pf->empr_count++;
3889
			set_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state);
3890
		}
J
Jesse Brandeburg 已提交
3891 3892
	}

3893 3894 3895
	if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
		icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
		dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3896 3897 3898
		dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
			 rd32(hw, I40E_PFHMC_ERRORINFO),
			 rd32(hw, I40E_PFHMC_ERRORDATA));
3899 3900
	}

J
Jacob Keller 已提交
3901 3902 3903 3904
	if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
		u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);

		if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3905
			icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
J
Jacob Keller 已提交
3906 3907 3908 3909
			i40e_ptp_tx_hwtstamp(pf);
		}
	}

J
Jesse Brandeburg 已提交
3910 3911 3912 3913 3914 3915 3916 3917
	/* If a critical error is pending we have no choice but to reset the
	 * device.
	 * Report and mask out any remaining unexpected interrupts.
	 */
	icr0_remaining = icr0 & ena_mask;
	if (icr0_remaining) {
		dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
			 icr0_remaining);
3918
		if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
J
Jesse Brandeburg 已提交
3919
		    (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3920
		    (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3921
			dev_info(&pf->pdev->dev, "device will be reset\n");
3922
			set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
3923
			i40e_service_event_schedule(pf);
J
Jesse Brandeburg 已提交
3924 3925 3926
		}
		ena_mask &= ~icr0_remaining;
	}
3927
	ret = IRQ_HANDLED;
J
Jesse Brandeburg 已提交
3928

3929
enable_intr:
J
Jesse Brandeburg 已提交
3930 3931
	/* re-enable interrupt causes */
	wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3932
	if (!test_bit(__I40E_DOWN, pf->state)) {
J
Jesse Brandeburg 已提交
3933
		i40e_service_event_schedule(pf);
3934
		i40e_irq_dynamic_enable_icr0(pf);
J
Jesse Brandeburg 已提交
3935 3936
	}

3937
	return ret;
J
Jesse Brandeburg 已提交
3938 3939
}

3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965
/**
 * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
 * @tx_ring:  tx ring to clean
 * @budget:   how many cleans we're allowed
 *
 * Returns true if there's any budget left (e.g. the clean is finished)
 **/
static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
{
	struct i40e_vsi *vsi = tx_ring->vsi;
	u16 i = tx_ring->next_to_clean;
	struct i40e_tx_buffer *tx_buf;
	struct i40e_tx_desc *tx_desc;

	tx_buf = &tx_ring->tx_bi[i];
	tx_desc = I40E_TX_DESC(tx_ring, i);
	i -= tx_ring->count;

	do {
		struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;

		/* if next_to_watch is not set then there is no work pending */
		if (!eop_desc)
			break;

		/* prevent any other reads prior to eop_desc */
3966
		smp_rmb();
3967 3968 3969 3970 3971 3972 3973 3974 3975

		/* if the descriptor isn't done, no work yet to do */
		if (!(eop_desc->cmd_type_offset_bsz &
		      cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
			break;

		/* clear next_to_watch to prevent false hangs */
		tx_buf->next_to_watch = NULL;

3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
		/* move past filter desc */
		tx_buf++;
		tx_desc++;
		i++;
		if (unlikely(!i)) {
			i -= tx_ring->count;
			tx_buf = tx_ring->tx_bi;
			tx_desc = I40E_TX_DESC(tx_ring, 0);
		}
3987 3988 3989 3990 3991
		/* unmap skb header data */
		dma_unmap_single(tx_ring->dev,
				 dma_unmap_addr(tx_buf, dma),
				 dma_unmap_len(tx_buf, len),
				 DMA_TO_DEVICE);
3992 3993
		if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
			kfree(tx_buf->raw_buf);
3994

3995 3996 3997
		tx_buf->raw_buf = NULL;
		tx_buf->tx_flags = 0;
		tx_buf->next_to_watch = NULL;
3998
		dma_unmap_len_set(tx_buf, len, 0);
3999 4000
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
4001

4002
		/* move us past the eop_desc for start of next FD desc */
4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018
		tx_buf++;
		tx_desc++;
		i++;
		if (unlikely(!i)) {
			i -= tx_ring->count;
			tx_buf = tx_ring->tx_bi;
			tx_desc = I40E_TX_DESC(tx_ring, 0);
		}

		/* update budget accounting */
		budget--;
	} while (likely(budget));

	i += tx_ring->count;
	tx_ring->next_to_clean = i;

J
Jesse Brandeburg 已提交
4019
	if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
4020
		i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
J
Jesse Brandeburg 已提交
4021

4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043
	return budget > 0;
}

/**
 * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
 * @irq: interrupt number
 * @data: pointer to a q_vector
 **/
static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
{
	struct i40e_q_vector *q_vector = data;
	struct i40e_vsi *vsi;

	if (!q_vector->tx.ring)
		return IRQ_HANDLED;

	vsi = q_vector->tx.ring->vsi;
	i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);

	return IRQ_HANDLED;
}

J
Jesse Brandeburg 已提交
4044
/**
4045
 * i40e_map_vector_to_qp - Assigns the queue pair to the vector
J
Jesse Brandeburg 已提交
4046 4047
 * @vsi: the VSI being configured
 * @v_idx: vector index
4048
 * @qp_idx: queue pair index
J
Jesse Brandeburg 已提交
4049
 **/
4050
static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
J
Jesse Brandeburg 已提交
4051
{
4052
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4053 4054
	struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
	struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
J
Jesse Brandeburg 已提交
4055 4056

	tx_ring->q_vector = q_vector;
4057 4058
	tx_ring->next = q_vector->tx.ring;
	q_vector->tx.ring = tx_ring;
J
Jesse Brandeburg 已提交
4059
	q_vector->tx.count++;
4060

4061 4062 4063 4064 4065 4066 4067 4068 4069 4070
	/* Place XDP Tx ring in the same q_vector ring list as regular Tx */
	if (i40e_enabled_xdp_vsi(vsi)) {
		struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];

		xdp_ring->q_vector = q_vector;
		xdp_ring->next = q_vector->tx.ring;
		q_vector->tx.ring = xdp_ring;
		q_vector->tx.count++;
	}

4071 4072 4073 4074
	rx_ring->q_vector = q_vector;
	rx_ring->next = q_vector->rx.ring;
	q_vector->rx.ring = rx_ring;
	q_vector->rx.count++;
J
Jesse Brandeburg 已提交
4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089
}

/**
 * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
 * @vsi: the VSI being configured
 *
 * This function maps descriptor rings to the queue-specific vectors
 * we were allotted through the MSI-X enabling code.  Ideally, we'd have
 * one vector per queue pair, but on a constrained vector budget, we
 * group the queue pairs as "efficiently" as possible.
 **/
static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
{
	int qp_remaining = vsi->num_queue_pairs;
	int q_vectors = vsi->num_q_vectors;
4090
	int num_ringpairs;
J
Jesse Brandeburg 已提交
4091 4092 4093 4094 4095
	int v_start = 0;
	int qp_idx = 0;

	/* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
	 * group them so there are multiple queues per vector.
4096 4097 4098 4099
	 * It is also important to go through all the vectors available to be
	 * sure that if we don't use all the vectors, that the remaining vectors
	 * are cleared. This is especially important when decreasing the
	 * number of queues in use.
J
Jesse Brandeburg 已提交
4100
	 */
4101
	for (; v_start < q_vectors; v_start++) {
4102 4103 4104 4105 4106
		struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];

		num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);

		q_vector->num_ringpairs = num_ringpairs;
4107
		q_vector->reg_idx = q_vector->v_idx + vsi->base_vector - 1;
4108 4109 4110 4111 4112 4113 4114

		q_vector->rx.count = 0;
		q_vector->tx.count = 0;
		q_vector->rx.ring = NULL;
		q_vector->tx.ring = NULL;

		while (num_ringpairs--) {
4115
			i40e_map_vector_to_qp(vsi, v_start, qp_idx);
4116 4117
			qp_idx++;
			qp_remaining--;
J
Jesse Brandeburg 已提交
4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135
		}
	}
}

/**
 * i40e_vsi_request_irq - Request IRQ from the OS
 * @vsi: the VSI being configured
 * @basename: name for the vector
 **/
static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
{
	struct i40e_pf *pf = vsi->back;
	int err;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		err = i40e_vsi_request_irq_msix(vsi, basename);
	else if (pf->flags & I40E_FLAG_MSI_ENABLED)
		err = request_irq(pf->pdev->irq, i40e_intr, 0,
4136
				  pf->int_name, pf);
J
Jesse Brandeburg 已提交
4137 4138
	else
		err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
4139
				  pf->int_name, pf);
J
Jesse Brandeburg 已提交
4140 4141 4142 4143 4144 4145 4146 4147 4148

	if (err)
		dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);

	return err;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
/**
4149
 * i40e_netpoll - A Polling 'interrupt' handler
J
Jesse Brandeburg 已提交
4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162
 * @netdev: network interface device structure
 *
 * This is used by netconsole to send skbs without having to re-enable
 * interrupts.  It's not called while the normal interrupt routine is executing.
 **/
static void i40e_netpoll(struct net_device *netdev)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int i;

	/* if interface is down do nothing */
4163
	if (test_bit(__I40E_VSI_DOWN, vsi->state))
J
Jesse Brandeburg 已提交
4164 4165 4166 4167
		return;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = 0; i < vsi->num_q_vectors; i++)
4168
			i40e_msix_clean_rings(0, vsi->q_vectors[i]);
J
Jesse Brandeburg 已提交
4169 4170 4171 4172 4173 4174
	} else {
		i40e_intr(pf->pdev->irq, netdev);
	}
}
#endif

4175 4176
#define I40E_QTX_ENA_WAIT_COUNT 50

4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197
/**
 * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
 * @pf: the PF being configured
 * @pf_q: the PF queue
 * @enable: enable or disable state of the queue
 *
 * This routine will wait for the given Tx queue of the PF to reach the
 * enabled or disabled state.
 * Returns -ETIMEDOUT in case of failing to reach the requested state after
 * multiple retries; else will return 0 in case of success.
 **/
static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
	int i;
	u32 tx_reg;

	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
		tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
		if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
			break;

4198
		usleep_range(10, 20);
4199 4200 4201 4202 4203 4204 4205
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;

	return 0;
}

4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249
/**
 * i40e_control_tx_q - Start or stop a particular Tx queue
 * @pf: the PF structure
 * @pf_q: the PF queue to configure
 * @enable: start or stop the queue
 *
 * This function enables or disables a single queue. Note that any delay
 * required after the operation is expected to be handled by the caller of
 * this function.
 **/
static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
{
	struct i40e_hw *hw = &pf->hw;
	u32 tx_reg;
	int i;

	/* warn the TX unit of coming changes */
	i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
	if (!enable)
		usleep_range(10, 20);

	for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
		tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
		if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
		    ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
			break;
		usleep_range(1000, 2000);
	}

	/* Skip if the queue is already in the requested state */
	if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
		return;

	/* turn on/off the queue */
	if (enable) {
		wr32(hw, I40E_QTX_HEAD(pf_q), 0);
		tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
	} else {
		tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
	}

	wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
}

4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276
/**
 * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
 * @seid: VSI SEID
 * @pf: the PF structure
 * @pf_q: the PF queue to configure
 * @is_xdp: true if the queue is used for XDP
 * @enable: start or stop the queue
 **/
static int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
				  bool is_xdp, bool enable)
{
	int ret;

	i40e_control_tx_q(pf, pf_q, enable);

	/* wait for the change to finish */
	ret = i40e_pf_txq_wait(pf, pf_q, enable);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "VSI seid %d %sTx ring %d %sable timeout\n",
			 seid, (is_xdp ? "XDP " : ""), pf_q,
			 (enable ? "en" : "dis"));
	}

	return ret;
}

J
Jesse Brandeburg 已提交
4277 4278 4279 4280 4281 4282 4283 4284
/**
 * i40e_vsi_control_tx - Start or stop a VSI's rings
 * @vsi: the VSI being configured
 * @enable: start or stop the rings
 **/
static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
{
	struct i40e_pf *pf = vsi->back;
4285
	int i, pf_q, ret = 0;
J
Jesse Brandeburg 已提交
4286 4287 4288

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4289 4290 4291 4292 4293
		ret = i40e_control_wait_tx_q(vsi->seid, pf,
					     pf_q,
					     false /*is xdp*/, enable);
		if (ret)
			break;
4294

4295 4296 4297 4298 4299 4300 4301
		if (!i40e_enabled_xdp_vsi(vsi))
			continue;

		ret = i40e_control_wait_tx_q(vsi->seid, pf,
					     pf_q + vsi->alloc_queue_pairs,
					     true /*is xdp*/, enable);
		if (ret)
4302
			break;
J
Jesse Brandeburg 已提交
4303 4304
	}

4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328
	return ret;
}

/**
 * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
 * @pf: the PF being configured
 * @pf_q: the PF queue
 * @enable: enable or disable state of the queue
 *
 * This routine will wait for the given Rx queue of the PF to reach the
 * enabled or disabled state.
 * Returns -ETIMEDOUT in case of failing to reach the requested state after
 * multiple retries; else will return 0 in case of success.
 **/
static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
	int i;
	u32 rx_reg;

	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
		rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
		if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
			break;

4329
		usleep_range(10, 20);
4330 4331 4332
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;
4333

J
Jesse Brandeburg 已提交
4334 4335 4336
	return 0;
}

4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373
/**
 * i40e_control_rx_q - Start or stop a particular Rx queue
 * @pf: the PF structure
 * @pf_q: the PF queue to configure
 * @enable: start or stop the queue
 *
 * This function enables or disables a single queue. Note that any delay
 * required after the operation is expected to be handled by the caller of
 * this function.
 **/
static void i40e_control_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
{
	struct i40e_hw *hw = &pf->hw;
	u32 rx_reg;
	int i;

	for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
		rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
		if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
		    ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
			break;
		usleep_range(1000, 2000);
	}

	/* Skip if the queue is already in the requested state */
	if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
		return;

	/* turn on/off the queue */
	if (enable)
		rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
	else
		rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;

	wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
}

J
Jesse Brandeburg 已提交
4374 4375 4376 4377 4378 4379 4380 4381
/**
 * i40e_vsi_control_rx - Start or stop a VSI's rings
 * @vsi: the VSI being configured
 * @enable: start or stop the rings
 **/
static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
{
	struct i40e_pf *pf = vsi->back;
4382
	int i, pf_q, ret = 0;
J
Jesse Brandeburg 已提交
4383 4384 4385

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4386
		i40e_control_rx_q(pf, pf_q, enable);
J
Jesse Brandeburg 已提交
4387 4388

		/* wait for the change to finish */
4389 4390 4391
		ret = i40e_pf_rxq_wait(pf, pf_q, enable);
		if (ret) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
4392 4393
				 "VSI seid %d Rx ring %d %sable timeout\n",
				 vsi->seid, pf_q, (enable ? "en" : "dis"));
4394
			break;
J
Jesse Brandeburg 已提交
4395 4396 4397
		}
	}

4398 4399 4400 4401 4402 4403
	/* Due to HW errata, on Rx disable only, the register can indicate done
	 * before it really is. Needs 50ms to be sure
	 */
	if (!enable)
		mdelay(50);

4404
	return ret;
J
Jesse Brandeburg 已提交
4405 4406 4407
}

/**
F
Filip Sadowski 已提交
4408
 * i40e_vsi_start_rings - Start a VSI's rings
J
Jesse Brandeburg 已提交
4409 4410
 * @vsi: the VSI being configured
 **/
F
Filip Sadowski 已提交
4411
int i40e_vsi_start_rings(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
4412
{
4413
	int ret = 0;
J
Jesse Brandeburg 已提交
4414 4415

	/* do rx first for enable and last for disable */
F
Filip Sadowski 已提交
4416 4417 4418 4419
	ret = i40e_vsi_control_rx(vsi, true);
	if (ret)
		return ret;
	ret = i40e_vsi_control_tx(vsi, true);
J
Jesse Brandeburg 已提交
4420 4421 4422 4423

	return ret;
}

F
Filip Sadowski 已提交
4424 4425 4426 4427 4428 4429
/**
 * i40e_vsi_stop_rings - Stop a VSI's rings
 * @vsi: the VSI being configured
 **/
void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
{
4430
	/* When port TX is suspended, don't wait */
4431
	if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
4432 4433
		return i40e_vsi_stop_rings_no_wait(vsi);

F
Filip Sadowski 已提交
4434 4435 4436 4437 4438 4439 4440
	/* do rx first for enable and last for disable
	 * Ignore return value, we need to shutdown whatever we can
	 */
	i40e_vsi_control_tx(vsi, false);
	i40e_vsi_control_rx(vsi, false);
}

4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463
/**
 * i40e_vsi_stop_rings_no_wait - Stop a VSI's rings and do not delay
 * @vsi: the VSI being shutdown
 *
 * This function stops all the rings for a VSI but does not delay to verify
 * that rings have been disabled. It is expected that the caller is shutting
 * down multiple VSIs at once and will delay together for all the VSIs after
 * initiating the shutdown. This is particularly useful for shutting down lots
 * of VFs together. Otherwise, a large delay can be incurred while configuring
 * each VSI in serial.
 **/
void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
		i40e_control_tx_q(pf, pf_q, false);
		i40e_control_rx_q(pf, pf_q, false);
	}
}

J
Jesse Brandeburg 已提交
4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479
/**
 * i40e_vsi_free_irq - Free the irq association with the OS
 * @vsi: the VSI being configured
 **/
static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int base = vsi->base_vector;
	u32 val, qp;
	int i;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		if (!vsi->q_vectors)
			return;

4480 4481 4482 4483
		if (!vsi->irqs_ready)
			return;

		vsi->irqs_ready = false;
J
Jesse Brandeburg 已提交
4484
		for (i = 0; i < vsi->num_q_vectors; i++) {
4485 4486 4487 4488 4489
			int irq_num;
			u16 vector;

			vector = i + base;
			irq_num = pf->msix_entries[vector].vector;
J
Jesse Brandeburg 已提交
4490 4491

			/* free only the irqs that were actually requested */
S
Shannon Nelson 已提交
4492 4493
			if (!vsi->q_vectors[i] ||
			    !vsi->q_vectors[i]->num_ringpairs)
J
Jesse Brandeburg 已提交
4494 4495
				continue;

4496 4497
			/* clear the affinity notifier in the IRQ descriptor */
			irq_set_affinity_notifier(irq_num, NULL);
4498
			/* remove our suggested affinity mask for this IRQ */
4499 4500 4501
			irq_set_affinity_hint(irq_num, NULL);
			synchronize_irq(irq_num);
			free_irq(irq_num, vsi->q_vectors[i]);
J
Jesse Brandeburg 已提交
4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583

			/* Tear down the interrupt queue link list
			 *
			 * We know that they come in pairs and always
			 * the Rx first, then the Tx.  To clear the
			 * link list, stick the EOL value into the
			 * next_q field of the registers.
			 */
			val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
			qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
				>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
			val |= I40E_QUEUE_END_OF_LIST
				<< I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
			wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);

			while (qp != I40E_QUEUE_END_OF_LIST) {
				u32 next;

				val = rd32(hw, I40E_QINT_RQCTL(qp));

				val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
					 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
					 I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
					 I40E_QINT_RQCTL_INTEVENT_MASK);

				val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
					 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);

				wr32(hw, I40E_QINT_RQCTL(qp), val);

				val = rd32(hw, I40E_QINT_TQCTL(qp));

				next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
					>> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;

				val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
					 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
					 I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
					 I40E_QINT_TQCTL_INTEVENT_MASK);

				val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
					 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);

				wr32(hw, I40E_QINT_TQCTL(qp), val);
				qp = next;
			}
		}
	} else {
		free_irq(pf->pdev->irq, pf);

		val = rd32(hw, I40E_PFINT_LNKLST0);
		qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
			>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
		val |= I40E_QUEUE_END_OF_LIST
			<< I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
		wr32(hw, I40E_PFINT_LNKLST0, val);

		val = rd32(hw, I40E_QINT_RQCTL(qp));
		val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
			 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
			 I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
			 I40E_QINT_RQCTL_INTEVENT_MASK);

		val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
			I40E_QINT_RQCTL_NEXTQ_INDX_MASK);

		wr32(hw, I40E_QINT_RQCTL(qp), val);

		val = rd32(hw, I40E_QINT_TQCTL(qp));

		val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
			 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
			 I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
			 I40E_QINT_TQCTL_INTEVENT_MASK);

		val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
			I40E_QINT_TQCTL_NEXTQ_INDX_MASK);

		wr32(hw, I40E_QINT_TQCTL(qp), val);
	}
}

4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595
/**
 * i40e_free_q_vector - Free memory allocated for specific interrupt vector
 * @vsi: the VSI being configured
 * @v_idx: Index of vector to be freed
 *
 * This function frees the memory allocated to the q_vector.  In addition if
 * NAPI is enabled it will delete any references to the NAPI struct prior
 * to freeing the q_vector.
 **/
static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
{
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4596
	struct i40e_ring *ring;
4597 4598 4599 4600 4601

	if (!q_vector)
		return;

	/* disassociate q_vector from rings */
4602 4603 4604 4605 4606
	i40e_for_each_ring(ring, q_vector->tx)
		ring->q_vector = NULL;

	i40e_for_each_ring(ring, q_vector->rx)
		ring->q_vector = NULL;
4607 4608 4609 4610 4611 4612 4613 4614 4615 4616

	/* only VSI w/ an associated netdev is set up w/ NAPI */
	if (vsi->netdev)
		netif_napi_del(&q_vector->napi);

	vsi->q_vectors[v_idx] = NULL;

	kfree_rcu(q_vector, rcu);
}

J
Jesse Brandeburg 已提交
4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627
/**
 * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
 * @vsi: the VSI being un-configured
 *
 * This frees the memory allocated to the q_vectors and
 * deletes references to the NAPI struct.
 **/
static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
{
	int v_idx;

4628 4629
	for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
		i40e_free_q_vector(vsi, v_idx);
J
Jesse Brandeburg 已提交
4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642
}

/**
 * i40e_reset_interrupt_capability - Disable interrupt setup in OS
 * @pf: board private structure
 **/
static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
{
	/* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		pci_disable_msix(pf->pdev);
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
4643 4644
		kfree(pf->irq_pile);
		pf->irq_pile = NULL;
J
Jesse Brandeburg 已提交
4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661
	} else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
		pci_disable_msi(pf->pdev);
	}
	pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
}

/**
 * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
 * @pf: board private structure
 *
 * We go through and clear interrupt specific resources and reset the structure
 * to pre-load conditions
 **/
static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
{
	int i;

4662
	i40e_free_misc_vector(pf);
4663

4664 4665 4666
	i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
		      I40E_IWARP_IRQ_PILE_ID);

J
Jesse Brandeburg 已提交
4667
	i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
M
Mitch Williams 已提交
4668
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684
		if (pf->vsi[i])
			i40e_vsi_free_q_vectors(pf->vsi[i]);
	i40e_reset_interrupt_capability(pf);
}

/**
 * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
 * @vsi: the VSI being configured
 **/
static void i40e_napi_enable_all(struct i40e_vsi *vsi)
{
	int q_idx;

	if (!vsi->netdev)
		return;

4685 4686 4687 4688 4689 4690
	for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
		struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];

		if (q_vector->rx.ring || q_vector->tx.ring)
			napi_enable(&q_vector->napi);
	}
J
Jesse Brandeburg 已提交
4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703
}

/**
 * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
 * @vsi: the VSI being configured
 **/
static void i40e_napi_disable_all(struct i40e_vsi *vsi)
{
	int q_idx;

	if (!vsi->netdev)
		return;

4704 4705 4706 4707 4708 4709
	for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
		struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];

		if (q_vector->rx.ring || q_vector->tx.ring)
			napi_disable(&q_vector->napi);
	}
J
Jesse Brandeburg 已提交
4710 4711
}

4712 4713 4714 4715 4716 4717
/**
 * i40e_vsi_close - Shut down a VSI
 * @vsi: the vsi to be quelled
 **/
static void i40e_vsi_close(struct i40e_vsi *vsi)
{
M
Mitch Williams 已提交
4718
	struct i40e_pf *pf = vsi->back;
4719
	if (!test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
4720 4721 4722 4723
		i40e_down(vsi);
	i40e_vsi_free_irq(vsi);
	i40e_vsi_free_tx_resources(vsi);
	i40e_vsi_free_rx_resources(vsi);
4724
	vsi->current_netdev_flags = 0;
4725
	set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
4726
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4727
		set_bit(__I40E_CLIENT_RESET, pf->state);
4728 4729
}

J
Jesse Brandeburg 已提交
4730 4731 4732 4733 4734 4735
/**
 * i40e_quiesce_vsi - Pause a given VSI
 * @vsi: the VSI being paused
 **/
static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
{
4736
	if (test_bit(__I40E_VSI_DOWN, vsi->state))
J
Jesse Brandeburg 已提交
4737 4738
		return;

4739
	set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
J
Jesse Brandeburg 已提交
4740
	if (vsi->netdev && netif_running(vsi->netdev))
J
Jesse Brandeburg 已提交
4741
		vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
J
Jesse Brandeburg 已提交
4742
	else
4743
		i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
4744 4745 4746 4747 4748 4749 4750 4751
}

/**
 * i40e_unquiesce_vsi - Resume a given VSI
 * @vsi: the VSI being resumed
 **/
static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
{
4752
	if (!test_and_clear_bit(__I40E_VSI_NEEDS_RESTART, vsi->state))
J
Jesse Brandeburg 已提交
4753 4754 4755 4756 4757
		return;

	if (vsi->netdev && netif_running(vsi->netdev))
		vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
	else
4758
		i40e_vsi_open(vsi);   /* this clears the DOWN bit */
J
Jesse Brandeburg 已提交
4759 4760 4761 4762 4763 4764 4765 4766 4767 4768
}

/**
 * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
 * @pf: the PF
 **/
static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
{
	int v;

M
Mitch Williams 已提交
4769
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782
		if (pf->vsi[v])
			i40e_quiesce_vsi(pf->vsi[v]);
	}
}

/**
 * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
 * @pf: the PF
 **/
static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
{
	int v;

M
Mitch Williams 已提交
4783
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
4784 4785 4786 4787 4788
		if (pf->vsi[v])
			i40e_unquiesce_vsi(pf->vsi[v]);
	}
}

4789
/**
4790
 * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4791 4792
 * @vsi: the VSI being configured
 *
4793
 * Wait until all queues on a given VSI have been disabled.
4794
 **/
4795
int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4796 4797 4798 4799 4800 4801
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q, ret;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4802
		/* Check and wait for the Tx queue */
4803 4804 4805
		ret = i40e_pf_txq_wait(pf, pf_q, false);
		if (ret) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
4806 4807
				 "VSI seid %d Tx ring %d disable timeout\n",
				 vsi->seid, pf_q);
4808 4809
			return ret;
		}
4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824

		if (!i40e_enabled_xdp_vsi(vsi))
			goto wait_rx;

		/* Check and wait for the XDP Tx queue */
		ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
				       false);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "VSI seid %d XDP Tx ring %d disable timeout\n",
				 vsi->seid, pf_q);
			return ret;
		}
wait_rx:
		/* Check and wait for the Rx queue */
4825 4826 4827 4828 4829 4830 4831 4832 4833
		ret = i40e_pf_rxq_wait(pf, pf_q, false);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "VSI seid %d Rx ring %d disable timeout\n",
				 vsi->seid, pf_q);
			return ret;
		}
	}

4834 4835 4836
	return 0;
}

4837
#ifdef CONFIG_I40E_DCB
4838
/**
4839
 * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4840 4841
 * @pf: the PF
 *
4842
 * This function waits for the queues to be in disabled state for all the
4843 4844
 * VSIs that are managed by this PF.
 **/
4845
static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4846 4847 4848 4849
{
	int v, ret = 0;

	for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4850
		if (pf->vsi[v]) {
4851
			ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4852 4853 4854 4855 4856 4857 4858 4859 4860
			if (ret)
				break;
		}
	}

	return ret;
}

#endif
4861

4862 4863
/**
 * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4864
 * @pf: pointer to PF
4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882
 *
 * Get TC map for ISCSI PF type that will include iSCSI TC
 * and LAN TC.
 **/
static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
{
	struct i40e_dcb_app_priority_table app;
	struct i40e_hw *hw = &pf->hw;
	u8 enabled_tc = 1; /* TC0 is always enabled */
	u8 tc, i;
	/* Get the iSCSI APP TLV */
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

	for (i = 0; i < dcbcfg->numapps; i++) {
		app = dcbcfg->app[i];
		if (app.selector == I40E_APP_SEL_TCPIP &&
		    app.protocolid == I40E_APP_PROTOID_ISCSI) {
			tc = dcbcfg->etscfg.prioritytable[app.priority];
J
Jesse Brandeburg 已提交
4883
			enabled_tc |= BIT(tc);
4884 4885 4886 4887 4888 4889 4890
			break;
		}
	}

	return enabled_tc;
}

J
Jesse Brandeburg 已提交
4891 4892 4893 4894 4895 4896 4897 4898
/**
 * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
 * @dcbcfg: the corresponding DCBx configuration structure
 *
 * Return the number of TCs from given DCBx configuration
 **/
static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
{
4899
	int i, tc_unused = 0;
J
Jesse Brandeburg 已提交
4900
	u8 num_tc = 0;
4901
	u8 ret = 0;
J
Jesse Brandeburg 已提交
4902 4903 4904

	/* Scan the ETS Config Priority Table to find
	 * traffic class enabled for a given priority
4905
	 * and create a bitmask of enabled TCs
J
Jesse Brandeburg 已提交
4906
	 */
4907 4908
	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
		num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
J
Jesse Brandeburg 已提交
4909

4910 4911
	/* Now scan the bitmask to check for
	 * contiguous TCs starting with TC0
J
Jesse Brandeburg 已提交
4912
	 */
4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (num_tc & BIT(i)) {
			if (!tc_unused) {
				ret++;
			} else {
				pr_err("Non-contiguous TC - Disabling DCB\n");
				return 1;
			}
		} else {
			tc_unused = 1;
		}
	}

	/* There is always at least TC0 */
	if (!ret)
		ret = 1;

	return ret;
J
Jesse Brandeburg 已提交
4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946
}

/**
 * i40e_dcb_get_enabled_tc - Get enabled traffic classes
 * @dcbcfg: the corresponding DCBx configuration structure
 *
 * Query the current DCB configuration and return the number of
 * traffic classes enabled from the given DCBX config
 **/
static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
{
	u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
	u8 enabled_tc = 1;
	u8 i;

	for (i = 0; i < num_tc; i++)
4947
		enabled_tc |= BIT(i);
J
Jesse Brandeburg 已提交
4948 4949 4950 4951

	return enabled_tc;
}

4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969
/**
 * i40e_mqprio_get_enabled_tc - Get enabled traffic classes
 * @pf: PF being queried
 *
 * Query the current MQPRIO configuration and return the number of
 * traffic classes enabled.
 **/
static u8 i40e_mqprio_get_enabled_tc(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	u8 num_tc = vsi->mqprio_qopt.qopt.num_tc;
	u8 enabled_tc = 1, i;

	for (i = 1; i < num_tc; i++)
		enabled_tc |= BIT(i);
	return enabled_tc;
}

J
Jesse Brandeburg 已提交
4970 4971 4972 4973 4974 4975 4976 4977 4978
/**
 * i40e_pf_get_num_tc - Get enabled traffic classes for PF
 * @pf: PF being queried
 *
 * Return number of traffic classes enabled for the given PF
 **/
static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
4979
	u8 i, enabled_tc = 1;
J
Jesse Brandeburg 已提交
4980 4981 4982
	u8 num_tc = 0;
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

4983 4984 4985 4986
	if (pf->flags & I40E_FLAG_TC_MQPRIO)
		return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;

	/* If neither MQPRIO nor DCB is enabled, then always use single TC */
J
Jesse Brandeburg 已提交
4987 4988 4989
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
		return 1;

4990 4991 4992 4993
	/* SFP mode will be enabled for all TCs on port */
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_num_tc(dcbcfg);

J
Jesse Brandeburg 已提交
4994
	/* MFP mode return count of enabled TCs for this PF */
4995 4996 4997
	if (pf->hw.func_caps.iscsi)
		enabled_tc =  i40e_get_iscsi_tc_map(pf);
	else
4998
		return 1; /* Only TC0 */
J
Jesse Brandeburg 已提交
4999

5000
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
J
Jesse Brandeburg 已提交
5001
		if (enabled_tc & BIT(i))
5002 5003 5004
			num_tc++;
	}
	return num_tc;
J
Jesse Brandeburg 已提交
5005 5006 5007 5008 5009 5010 5011 5012 5013 5014
}

/**
 * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
 * @pf: PF being queried
 *
 * Return a bitmap for enabled traffic classes for this PF.
 **/
static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
{
5015 5016 5017 5018 5019 5020
	if (pf->flags & I40E_FLAG_TC_MQPRIO)
		return i40e_mqprio_get_enabled_tc(pf);

	/* If neither MQPRIO nor DCB is enabled for this PF then just return
	 * default TC
	 */
J
Jesse Brandeburg 已提交
5021
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5022
		return I40E_DEFAULT_TRAFFIC_CLASS;
J
Jesse Brandeburg 已提交
5023 5024

	/* SFP mode we want PF to be enabled for all TCs */
5025 5026 5027
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);

5028
	/* MFP enabled and iSCSI PF type */
5029 5030 5031
	if (pf->hw.func_caps.iscsi)
		return i40e_get_iscsi_tc_map(pf);
	else
5032
		return I40E_DEFAULT_TRAFFIC_CLASS;
J
Jesse Brandeburg 已提交
5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046
}

/**
 * i40e_vsi_get_bw_info - Query VSI BW Information
 * @vsi: the VSI being queried
 *
 * Returns 0 on success, negative value on failure
 **/
static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
{
	struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
	struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
5047
	i40e_status ret;
J
Jesse Brandeburg 已提交
5048 5049 5050 5051
	u32 tc_bw_max;
	int i;

	/* Get the VSI level BW configuration */
5052 5053
	ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
	if (ret) {
J
Jesse Brandeburg 已提交
5054
		dev_info(&pf->pdev->dev,
5055 5056 5057
			 "couldn't get PF vsi bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
5058
		return -EINVAL;
J
Jesse Brandeburg 已提交
5059 5060 5061
	}

	/* Get the VSI level BW configuration per TC */
5062 5063 5064
	ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
					       NULL);
	if (ret) {
J
Jesse Brandeburg 已提交
5065
		dev_info(&pf->pdev->dev,
5066 5067 5068
			 "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
5069
		return -EINVAL;
J
Jesse Brandeburg 已提交
5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090
	}

	if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
		dev_info(&pf->pdev->dev,
			 "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
			 bw_config.tc_valid_bits,
			 bw_ets_config.tc_valid_bits);
		/* Still continuing */
	}

	vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
	vsi->bw_max_quanta = bw_config.max_bw;
	tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
		    (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
		vsi->bw_ets_limit_credits[i] =
					le16_to_cpu(bw_ets_config.credits[i]);
		/* 3 bits out of 4 for each TC */
		vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
	}
J
Jesse Brandeburg 已提交
5091

J
Jesse Brandeburg 已提交
5092
	return 0;
J
Jesse Brandeburg 已提交
5093 5094 5095 5096 5097 5098 5099 5100 5101 5102
}

/**
 * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
 * @vsi: the VSI being configured
 * @enabled_tc: TC bitmap
 * @bw_credits: BW shared credits per TC
 *
 * Returns 0 on success, negative value on failure
 **/
J
Jesse Brandeburg 已提交
5103
static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
J
Jesse Brandeburg 已提交
5104 5105 5106
				       u8 *bw_share)
{
	struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5107
	i40e_status ret;
J
Jesse Brandeburg 已提交
5108
	int i;
J
Jesse Brandeburg 已提交
5109

5110
	if (vsi->back->flags & I40E_FLAG_TC_MQPRIO)
5111
		return 0;
5112 5113 5114 5115 5116 5117 5118 5119
	if (!vsi->mqprio_qopt.qopt.hw) {
		ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
		if (ret)
			dev_info(&vsi->back->pdev->dev,
				 "Failed to reset tx rate for vsi->seid %u\n",
				 vsi->seid);
		return ret;
	}
J
Jesse Brandeburg 已提交
5120 5121 5122 5123
	bw_data.tc_valid_bits = enabled_tc;
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
		bw_data.tc_bw_credits[i] = bw_share[i];

5124 5125 5126
	ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
				       NULL);
	if (ret) {
J
Jesse Brandeburg 已提交
5127
		dev_info(&vsi->back->pdev->dev,
J
Jesse Brandeburg 已提交
5128 5129
			 "AQ command Config VSI BW allocation per TC failed = %d\n",
			 vsi->back->hw.aq.asq_last_status);
J
Jesse Brandeburg 已提交
5130
		return -EINVAL;
J
Jesse Brandeburg 已提交
5131 5132 5133 5134 5135
	}

	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
		vsi->info.qs_handle[i] = bw_data.qs_handles[i];

J
Jesse Brandeburg 已提交
5136
	return 0;
J
Jesse Brandeburg 已提交
5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174
}

/**
 * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
 * @vsi: the VSI being configured
 * @enabled_tc: TC map to be enabled
 *
 **/
static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
	struct net_device *netdev = vsi->netdev;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u8 netdev_tc = 0;
	int i;
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

	if (!netdev)
		return;

	if (!enabled_tc) {
		netdev_reset_tc(netdev);
		return;
	}

	/* Set up actual enabled TCs on the VSI */
	if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
		return;

	/* set per TC queues for the VSI */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* Only set TC queues for enabled tcs
		 *
		 * e.g. For a VSI that has TC0 and TC3 enabled the
		 * enabled_tc bitmap would be 0x00001001; the driver
		 * will set the numtc for netdev as 2 that will be
		 * referenced by the netdev layer as TC 0 and 1.
		 */
J
Jesse Brandeburg 已提交
5175
		if (vsi->tc_config.enabled_tc & BIT(i))
J
Jesse Brandeburg 已提交
5176 5177 5178 5179 5180 5181
			netdev_set_tc_queue(netdev,
					vsi->tc_config.tc_info[i].netdev_tc,
					vsi->tc_config.tc_info[i].qcount,
					vsi->tc_config.tc_info[i].qoffset);
	}

5182 5183 5184
	if (pf->flags & I40E_FLAG_TC_MQPRIO)
		return;

J
Jesse Brandeburg 已提交
5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229
	/* Assign UP2TC map for the VSI */
	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
		/* Get the actual TC# for the UP */
		u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
		/* Get the mapped netdev TC# for the UP */
		netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
		netdev_set_prio_tc_map(netdev, i, netdev_tc);
	}
}

/**
 * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
 * @vsi: the VSI being configured
 * @ctxt: the ctxt buffer returned from AQ VSI update param command
 **/
static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
				      struct i40e_vsi_context *ctxt)
{
	/* copy just the sections touched not the entire info
	 * since not all sections are valid as returned by
	 * update vsi params
	 */
	vsi->info.mapping_flags = ctxt->info.mapping_flags;
	memcpy(&vsi->info.queue_mapping,
	       &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
	memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
	       sizeof(vsi->info.tc_mapping));
}

/**
 * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
 * @vsi: VSI to be configured
 * @enabled_tc: TC bitmap
 *
 * This configures a particular VSI for TCs that are mapped to the
 * given TC bitmap. It uses default bandwidth share for TCs across
 * VSIs to configure TC for a particular VSI.
 *
 * NOTE:
 * It is expected that the VSI queues have been quisced before calling
 * this function.
 **/
static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
	u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5230 5231
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
J
Jesse Brandeburg 已提交
5232 5233 5234 5235 5236
	struct i40e_vsi_context ctxt;
	int ret = 0;
	int i;

	/* Check if enabled_tc is same as existing or new TCs */
5237 5238
	if (vsi->tc_config.enabled_tc == enabled_tc &&
	    vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
J
Jesse Brandeburg 已提交
5239 5240 5241 5242
		return ret;

	/* Enable ETS TCs with equal BW Share for now across all VSIs */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
J
Jesse Brandeburg 已提交
5243
		if (enabled_tc & BIT(i))
J
Jesse Brandeburg 已提交
5244 5245 5246 5247 5248
			bw_share[i] = 1;
	}

	ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
	if (ret) {
5249 5250
		struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};

5251
		dev_info(&pf->pdev->dev,
J
Jesse Brandeburg 已提交
5252 5253
			 "Failed configuring TC map %d for VSI %d\n",
			 enabled_tc, vsi->seid);
5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282
		ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
						  &bw_config, NULL);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Failed querying vsi bw info, err %s aq_err %s\n",
				 i40e_stat_str(hw, ret),
				 i40e_aq_str(hw, hw->aq.asq_last_status));
			goto out;
		}
		if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
			u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;

			if (!valid_tc)
				valid_tc = bw_config.tc_valid_bits;
			/* Always enable TC0, no matter what */
			valid_tc |= 1;
			dev_info(&pf->pdev->dev,
				 "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
				 enabled_tc, bw_config.tc_valid_bits, valid_tc);
			enabled_tc = valid_tc;
		}

		ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
		if (ret) {
			dev_err(&pf->pdev->dev,
				"Unable to  configure TC map %d for VSI %d\n",
				enabled_tc, vsi->seid);
			goto out;
		}
J
Jesse Brandeburg 已提交
5283 5284 5285 5286 5287 5288 5289
	}

	/* Update Queue Pairs Mapping for currently enabled UPs */
	ctxt.seid = vsi->seid;
	ctxt.pf_num = vsi->back->hw.pf_id;
	ctxt.vf_num = 0;
	ctxt.uplink_seid = vsi->uplink_seid;
5290
	ctxt.info = vsi->info;
5291 5292 5293 5294 5295 5296 5297
	if (vsi->back->flags & I40E_FLAG_TC_MQPRIO) {
		ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
		if (ret)
			goto out;
	} else {
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
	}
J
Jesse Brandeburg 已提交
5298

5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312
	/* On destroying the qdisc, reset vsi->rss_size, as number of enabled
	 * queues changed.
	 */
	if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
		vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
				      vsi->num_queue_pairs);
		ret = i40e_vsi_config_rss(vsi);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "Failed to reconfig rss for num_queues\n");
			return ret;
		}
		vsi->reconfig_rss = false;
	}
5313 5314 5315 5316 5317 5318
	if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
		ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
		ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
	}

5319 5320 5321
	/* Update the VSI after updating the VSI queue-mapping
	 * information
	 */
5322
	ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
J
Jesse Brandeburg 已提交
5323
	if (ret) {
5324
		dev_info(&pf->pdev->dev,
5325
			 "Update vsi tc config failed, err %s aq_err %s\n",
5326 5327
			 i40e_stat_str(hw, ret),
			 i40e_aq_str(hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
5328 5329 5330 5331 5332 5333 5334 5335 5336
		goto out;
	}
	/* update the local VSI info with updated queue map */
	i40e_vsi_update_queue_map(vsi, &ctxt);
	vsi->info.valid_sections = 0;

	/* Update current VSI BW information */
	ret = i40e_vsi_get_bw_info(vsi);
	if (ret) {
5337
		dev_info(&pf->pdev->dev,
5338
			 "Failed updating vsi bw info, err %s aq_err %s\n",
5339 5340
			 i40e_stat_str(hw, ret),
			 i40e_aq_str(hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
5341 5342 5343 5344 5345 5346 5347 5348 5349
		goto out;
	}

	/* Update the netdev TC setup */
	i40e_vsi_config_netdev_tc(vsi, enabled_tc);
out:
	return ret;
}

N
Neerav Parikh 已提交
5350
/**
5351 5352
 * i40e_get_link_speed - Returns link speed for the interface
 * @vsi: VSI to be configured
N
Neerav Parikh 已提交
5353 5354
 *
 **/
5355
static int i40e_get_link_speed(struct i40e_vsi *vsi)
N
Neerav Parikh 已提交
5356
{
5357
	struct i40e_pf *pf = vsi->back;
N
Neerav Parikh 已提交
5358

5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371
	switch (pf->hw.phy.link_info.link_speed) {
	case I40E_LINK_SPEED_40GB:
		return 40000;
	case I40E_LINK_SPEED_25GB:
		return 25000;
	case I40E_LINK_SPEED_20GB:
		return 20000;
	case I40E_LINK_SPEED_10GB:
		return 10000;
	case I40E_LINK_SPEED_1GB:
		return 1000;
	default:
		return -EINVAL;
N
Neerav Parikh 已提交
5372 5373 5374 5375
	}
}

/**
5376 5377 5378 5379
 * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
 * @vsi: VSI to be configured
 * @seid: seid of the channel/VSI
 * @max_tx_rate: max TX rate to be configured as BW limit
N
Neerav Parikh 已提交
5380
 *
5381
 * Helper function to set BW limit for a given VSI
N
Neerav Parikh 已提交
5382
 **/
5383
int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
N
Neerav Parikh 已提交
5384
{
5385
	struct i40e_pf *pf = vsi->back;
A
Alan Brady 已提交
5386
	u64 credits = 0;
5387 5388
	int speed = 0;
	int ret = 0;
N
Neerav Parikh 已提交
5389

5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403
	speed = i40e_get_link_speed(vsi);
	if (max_tx_rate > speed) {
		dev_err(&pf->pdev->dev,
			"Invalid max tx rate %llu specified for VSI seid %d.",
			max_tx_rate, seid);
		return -EINVAL;
	}
	if (max_tx_rate && max_tx_rate < 50) {
		dev_warn(&pf->pdev->dev,
			 "Setting max tx rate to minimum usable value of 50Mbps.\n");
		max_tx_rate = 50;
	}

	/* Tx rate credits are in values of 50Mbps, 0 is disabled */
A
Alan Brady 已提交
5404 5405 5406
	credits = max_tx_rate;
	do_div(credits, I40E_BW_CREDIT_DIVISOR);
	ret = i40e_aq_config_vsi_bw_limit(&pf->hw, seid, credits,
5407 5408 5409 5410 5411 5412 5413 5414 5415
					  I40E_MAX_BW_INACTIVE_ACCUM, NULL);
	if (ret)
		dev_err(&pf->pdev->dev,
			"Failed set tx rate (%llu Mbps) for vsi->seid %u, err %s aq_err %s\n",
			max_tx_rate, seid, i40e_stat_str(&pf->hw, ret),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
	return ret;
}

5416 5417 5418 5419 5420 5421 5422 5423
/**
 * i40e_remove_queue_channels - Remove queue channels for the TCs
 * @vsi: VSI to be configured
 *
 * Remove queue channels for the TCs
 **/
static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
{
5424 5425
	enum i40e_admin_queue_err last_aq_status;
	struct i40e_cloud_filter *cfilter;
5426
	struct i40e_channel *ch, *ch_tmp;
5427 5428
	struct i40e_pf *pf = vsi->back;
	struct hlist_node *node;
5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446
	int ret, i;

	/* Reset rss size that was stored when reconfiguring rss for
	 * channel VSIs with non-power-of-2 queue count.
	 */
	vsi->current_rss_size = 0;

	/* perform cleanup for channels if they exist */
	if (list_empty(&vsi->ch_list))
		return;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
		struct i40e_vsi *p_vsi;

		list_del(&ch->list);
		p_vsi = ch->parent_vsi;
		if (!p_vsi || !ch->initialized) {
			kfree(ch);
N
Neerav Parikh 已提交
5447
			continue;
5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461
		}
		/* Reset queue contexts */
		for (i = 0; i < ch->num_queue_pairs; i++) {
			struct i40e_ring *tx_ring, *rx_ring;
			u16 pf_q;

			pf_q = ch->base_queue + i;
			tx_ring = vsi->tx_rings[pf_q];
			tx_ring->ch = NULL;

			rx_ring = vsi->rx_rings[pf_q];
			rx_ring->ch = NULL;
		}

5462 5463 5464 5465 5466 5467 5468
		/* Reset BW configured for this VSI via mqprio */
		ret = i40e_set_bw_limit(vsi, ch->seid, 0);
		if (ret)
			dev_info(&vsi->back->pdev->dev,
				 "Failed to reset tx rate for ch->seid %u\n",
				 ch->seid);

5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491
		/* delete cloud filters associated with this channel */
		hlist_for_each_entry_safe(cfilter, node,
					  &pf->cloud_filter_list, cloud_node) {
			if (cfilter->seid != ch->seid)
				continue;

			hash_del(&cfilter->cloud_node);
			if (cfilter->dst_port)
				ret = i40e_add_del_cloud_filter_big_buf(vsi,
									cfilter,
									false);
			else
				ret = i40e_add_del_cloud_filter(vsi, cfilter,
								false);
			last_aq_status = pf->hw.aq.asq_last_status;
			if (ret)
				dev_info(&pf->pdev->dev,
					 "Failed to delete cloud filter, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw, last_aq_status));
			kfree(cfilter);
		}

5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933
		/* delete VSI from FW */
		ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
					     NULL);
		if (ret)
			dev_err(&vsi->back->pdev->dev,
				"unable to remove channel (%d) for parent VSI(%d)\n",
				ch->seid, p_vsi->seid);
		kfree(ch);
	}
	INIT_LIST_HEAD(&vsi->ch_list);
}

/**
 * i40e_is_any_channel - channel exist or not
 * @vsi: ptr to VSI to which channels are associated with
 *
 * Returns true or false if channel(s) exist for associated VSI or not
 **/
static bool i40e_is_any_channel(struct i40e_vsi *vsi)
{
	struct i40e_channel *ch, *ch_tmp;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
		if (ch->initialized)
			return true;
	}

	return false;
}

/**
 * i40e_get_max_queues_for_channel
 * @vsi: ptr to VSI to which channels are associated with
 *
 * Helper function which returns max value among the queue counts set on the
 * channels/TCs created.
 **/
static int i40e_get_max_queues_for_channel(struct i40e_vsi *vsi)
{
	struct i40e_channel *ch, *ch_tmp;
	int max = 0;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
		if (!ch->initialized)
			continue;
		if (ch->num_queue_pairs > max)
			max = ch->num_queue_pairs;
	}

	return max;
}

/**
 * i40e_validate_num_queues - validate num_queues w.r.t channel
 * @pf: ptr to PF device
 * @num_queues: number of queues
 * @vsi: the parent VSI
 * @reconfig_rss: indicates should the RSS be reconfigured or not
 *
 * This function validates number of queues in the context of new channel
 * which is being established and determines if RSS should be reconfigured
 * or not for parent VSI.
 **/
static int i40e_validate_num_queues(struct i40e_pf *pf, int num_queues,
				    struct i40e_vsi *vsi, bool *reconfig_rss)
{
	int max_ch_queues;

	if (!reconfig_rss)
		return -EINVAL;

	*reconfig_rss = false;
	if (vsi->current_rss_size) {
		if (num_queues > vsi->current_rss_size) {
			dev_dbg(&pf->pdev->dev,
				"Error: num_queues (%d) > vsi's current_size(%d)\n",
				num_queues, vsi->current_rss_size);
			return -EINVAL;
		} else if ((num_queues < vsi->current_rss_size) &&
			   (!is_power_of_2(num_queues))) {
			dev_dbg(&pf->pdev->dev,
				"Error: num_queues (%d) < vsi's current_size(%d), but not power of 2\n",
				num_queues, vsi->current_rss_size);
			return -EINVAL;
		}
	}

	if (!is_power_of_2(num_queues)) {
		/* Find the max num_queues configured for channel if channel
		 * exist.
		 * if channel exist, then enforce 'num_queues' to be more than
		 * max ever queues configured for channel.
		 */
		max_ch_queues = i40e_get_max_queues_for_channel(vsi);
		if (num_queues < max_ch_queues) {
			dev_dbg(&pf->pdev->dev,
				"Error: num_queues (%d) < max queues configured for channel(%d)\n",
				num_queues, max_ch_queues);
			return -EINVAL;
		}
		*reconfig_rss = true;
	}

	return 0;
}

/**
 * i40e_vsi_reconfig_rss - reconfig RSS based on specified rss_size
 * @vsi: the VSI being setup
 * @rss_size: size of RSS, accordingly LUT gets reprogrammed
 *
 * This function reconfigures RSS by reprogramming LUTs using 'rss_size'
 **/
static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
{
	struct i40e_pf *pf = vsi->back;
	u8 seed[I40E_HKEY_ARRAY_SIZE];
	struct i40e_hw *hw = &pf->hw;
	int local_rss_size;
	u8 *lut;
	int ret;

	if (!vsi->rss_size)
		return -EINVAL;

	if (rss_size > vsi->rss_size)
		return -EINVAL;

	local_rss_size = min_t(int, vsi->rss_size, rss_size);
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;

	/* Ignoring user configured lut if there is one */
	i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);

	/* Use user configured hash key if there is one, otherwise
	 * use default.
	 */
	if (vsi->rss_hkey_user)
		memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
	else
		netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);

	ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Cannot set RSS lut, err %s aq_err %s\n",
			 i40e_stat_str(hw, ret),
			 i40e_aq_str(hw, hw->aq.asq_last_status));
		kfree(lut);
		return ret;
	}
	kfree(lut);

	/* Do the update w.r.t. storing rss_size */
	if (!vsi->orig_rss_size)
		vsi->orig_rss_size = vsi->rss_size;
	vsi->current_rss_size = local_rss_size;

	return ret;
}

/**
 * i40e_channel_setup_queue_map - Setup a channel queue map
 * @pf: ptr to PF device
 * @vsi: the VSI being setup
 * @ctxt: VSI context structure
 * @ch: ptr to channel structure
 *
 * Setup queue map for a specific channel
 **/
static void i40e_channel_setup_queue_map(struct i40e_pf *pf,
					 struct i40e_vsi_context *ctxt,
					 struct i40e_channel *ch)
{
	u16 qcount, qmap, sections = 0;
	u8 offset = 0;
	int pow;

	sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
	sections |= I40E_AQ_VSI_PROP_SCHED_VALID;

	qcount = min_t(int, ch->num_queue_pairs, pf->num_lan_msix);
	ch->num_queue_pairs = qcount;

	/* find the next higher power-of-2 of num queue pairs */
	pow = ilog2(qcount);
	if (!is_power_of_2(qcount))
		pow++;

	qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
		(pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);

	/* Setup queue TC[0].qmap for given VSI context */
	ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);

	ctxt->info.up_enable_bits = 0x1; /* TC0 enabled */
	ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
	ctxt->info.queue_mapping[0] = cpu_to_le16(ch->base_queue);
	ctxt->info.valid_sections |= cpu_to_le16(sections);
}

/**
 * i40e_add_channel - add a channel by adding VSI
 * @pf: ptr to PF device
 * @uplink_seid: underlying HW switching element (VEB) ID
 * @ch: ptr to channel structure
 *
 * Add a channel (VSI) using add_vsi and queue_map
 **/
static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
			    struct i40e_channel *ch)
{
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
	u8 enabled_tc = 0x1; /* TC0 enabled */
	int ret;

	if (ch->type != I40E_VSI_VMDQ2) {
		dev_info(&pf->pdev->dev,
			 "add new vsi failed, ch->type %d\n", ch->type);
		return -EINVAL;
	}

	memset(&ctxt, 0, sizeof(ctxt));
	ctxt.pf_num = hw->pf_id;
	ctxt.vf_num = 0;
	ctxt.uplink_seid = uplink_seid;
	ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
	if (ch->type == I40E_VSI_VMDQ2)
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
		ctxt.info.valid_sections |=
		     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
		ctxt.info.switch_id =
		   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
	}

	/* Set queue map for a given VSI context */
	i40e_channel_setup_queue_map(pf, &ctxt, ch);

	/* Now time to create VSI */
	ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "add new vsi failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw,
				     pf->hw.aq.asq_last_status));
		return -ENOENT;
	}

	/* Success, update channel */
	ch->enabled_tc = enabled_tc;
	ch->seid = ctxt.seid;
	ch->vsi_number = ctxt.vsi_number;
	ch->stat_counter_idx = cpu_to_le16(ctxt.info.stat_counter_idx);

	/* copy just the sections touched not the entire info
	 * since not all sections are valid as returned by
	 * update vsi params
	 */
	ch->info.mapping_flags = ctxt.info.mapping_flags;
	memcpy(&ch->info.queue_mapping,
	       &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
	memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
	       sizeof(ctxt.info.tc_mapping));

	return 0;
}

static int i40e_channel_config_bw(struct i40e_vsi *vsi, struct i40e_channel *ch,
				  u8 *bw_share)
{
	struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
	i40e_status ret;
	int i;

	bw_data.tc_valid_bits = ch->enabled_tc;
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
		bw_data.tc_bw_credits[i] = bw_share[i];

	ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, ch->seid,
				       &bw_data, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "Config VSI BW allocation per TC failed, aq_err: %d for new_vsi->seid %u\n",
			 vsi->back->hw.aq.asq_last_status, ch->seid);
		return -EINVAL;
	}

	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
		ch->info.qs_handle[i] = bw_data.qs_handles[i];

	return 0;
}

/**
 * i40e_channel_config_tx_ring - config TX ring associated with new channel
 * @pf: ptr to PF device
 * @vsi: the VSI being setup
 * @ch: ptr to channel structure
 *
 * Configure TX rings associated with channel (VSI) since queues are being
 * from parent VSI.
 **/
static int i40e_channel_config_tx_ring(struct i40e_pf *pf,
				       struct i40e_vsi *vsi,
				       struct i40e_channel *ch)
{
	i40e_status ret;
	int i;
	u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};

	/* Enable ETS TCs with equal BW Share for now across all VSIs */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (ch->enabled_tc & BIT(i))
			bw_share[i] = 1;
	}

	/* configure BW for new VSI */
	ret = i40e_channel_config_bw(vsi, ch, bw_share);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed configuring TC map %d for channel (seid %u)\n",
			 ch->enabled_tc, ch->seid);
		return ret;
	}

	for (i = 0; i < ch->num_queue_pairs; i++) {
		struct i40e_ring *tx_ring, *rx_ring;
		u16 pf_q;

		pf_q = ch->base_queue + i;

		/* Get to TX ring ptr of main VSI, for re-setup TX queue
		 * context
		 */
		tx_ring = vsi->tx_rings[pf_q];
		tx_ring->ch = ch;

		/* Get the RX ring ptr */
		rx_ring = vsi->rx_rings[pf_q];
		rx_ring->ch = ch;
	}

	return 0;
}

/**
 * i40e_setup_hw_channel - setup new channel
 * @pf: ptr to PF device
 * @vsi: the VSI being setup
 * @ch: ptr to channel structure
 * @uplink_seid: underlying HW switching element (VEB) ID
 * @type: type of channel to be created (VMDq2/VF)
 *
 * Setup new channel (VSI) based on specified type (VMDq2/VF)
 * and configures TX rings accordingly
 **/
static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
					struct i40e_vsi *vsi,
					struct i40e_channel *ch,
					u16 uplink_seid, u8 type)
{
	int ret;

	ch->initialized = false;
	ch->base_queue = vsi->next_base_queue;
	ch->type = type;

	/* Proceed with creation of channel (VMDq2) VSI */
	ret = i40e_add_channel(pf, uplink_seid, ch);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to add_channel using uplink_seid %u\n",
			 uplink_seid);
		return ret;
	}

	/* Mark the successful creation of channel */
	ch->initialized = true;

	/* Reconfigure TX queues using QTX_CTL register */
	ret = i40e_channel_config_tx_ring(pf, vsi, ch);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to configure TX rings for channel %u\n",
			 ch->seid);
		return ret;
	}

	/* update 'next_base_queue' */
	vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
	dev_dbg(&pf->pdev->dev,
		"Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
		ch->seid, ch->vsi_number, ch->stat_counter_idx,
		ch->num_queue_pairs,
		vsi->next_base_queue);
	return ret;
}

/**
 * i40e_setup_channel - setup new channel using uplink element
 * @pf: ptr to PF device
 * @type: type of channel to be created (VMDq2/VF)
 * @uplink_seid: underlying HW switching element (VEB) ID
 * @ch: ptr to channel structure
 *
 * Setup new channel (VSI) based on specified type (VMDq2/VF)
 * and uplink switching element (uplink_seid)
 **/
static bool i40e_setup_channel(struct i40e_pf *pf, struct i40e_vsi *vsi,
			       struct i40e_channel *ch)
{
	u8 vsi_type;
	u16 seid;
	int ret;

	if (vsi->type == I40E_VSI_MAIN) {
		vsi_type = I40E_VSI_VMDQ2;
	} else {
		dev_err(&pf->pdev->dev, "unsupported parent vsi type(%d)\n",
			vsi->type);
		return false;
	}

	/* underlying switching element */
	seid = pf->vsi[pf->lan_vsi]->uplink_seid;

	/* create channel (VSI), configure TX rings */
	ret = i40e_setup_hw_channel(pf, vsi, ch, seid, vsi_type);
	if (ret) {
		dev_err(&pf->pdev->dev, "failed to setup hw_channel\n");
		return false;
	}

	return ch->initialized ? true : false;
}

5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970
/**
 * i40e_validate_and_set_switch_mode - sets up switch mode correctly
 * @vsi: ptr to VSI which has PF backing
 *
 * Sets up switch mode correctly if it needs to be changed and perform
 * what are allowed modes.
 **/
static int i40e_validate_and_set_switch_mode(struct i40e_vsi *vsi)
{
	u8 mode;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int ret;

	ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_dev_capabilities);
	if (ret)
		return -EINVAL;

	if (hw->dev_caps.switch_mode) {
		/* if switch mode is set, support mode2 (non-tunneled for
		 * cloud filter) for now
		 */
		u32 switch_mode = hw->dev_caps.switch_mode &
				  I40E_SWITCH_MODE_MASK;
		if (switch_mode >= I40E_CLOUD_FILTER_MODE1) {
			if (switch_mode == I40E_CLOUD_FILTER_MODE2)
				return 0;
			dev_err(&pf->pdev->dev,
				"Invalid switch_mode (%d), only non-tunneled mode for cloud filter is supported\n",
				hw->dev_caps.switch_mode);
			return -EINVAL;
		}
	}

	/* Set Bit 7 to be valid */
	mode = I40E_AQ_SET_SWITCH_BIT7_VALID;

5971 5972
	/* Set L4type for TCP support */
	mode |= I40E_AQ_SET_SWITCH_L4_TYPE_TCP;
5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990

	/* Set cloud filter mode */
	mode |= I40E_AQ_SET_SWITCH_MODE_NON_TUNNEL;

	/* Prep mode field for set_switch_config */
	ret = i40e_aq_set_switch_config(hw, pf->last_sw_conf_flags,
					pf->last_sw_conf_valid_flags,
					mode, NULL);
	if (ret && hw->aq.asq_last_status != I40E_AQ_RC_ESRCH)
		dev_err(&pf->pdev->dev,
			"couldn't set switch config bits, err %s aq_err %s\n",
			i40e_stat_str(hw, ret),
			i40e_aq_str(hw,
				    hw->aq.asq_last_status));

	return ret;
}

5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082
/**
 * i40e_create_queue_channel - function to create channel
 * @vsi: VSI to be configured
 * @ch: ptr to channel (it contains channel specific params)
 *
 * This function creates channel (VSI) using num_queues specified by user,
 * reconfigs RSS if needed.
 **/
int i40e_create_queue_channel(struct i40e_vsi *vsi,
			      struct i40e_channel *ch)
{
	struct i40e_pf *pf = vsi->back;
	bool reconfig_rss;
	int err;

	if (!ch)
		return -EINVAL;

	if (!ch->num_queue_pairs) {
		dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
			ch->num_queue_pairs);
		return -EINVAL;
	}

	/* validate user requested num_queues for channel */
	err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
				       &reconfig_rss);
	if (err) {
		dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
			 ch->num_queue_pairs);
		return -EINVAL;
	}

	/* By default we are in VEPA mode, if this is the first VF/VMDq
	 * VSI to be added switch to VEB mode.
	 */
	if ((!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) ||
	    (!i40e_is_any_channel(vsi))) {
		if (!is_power_of_2(vsi->tc_config.tc_info[0].qcount)) {
			dev_dbg(&pf->pdev->dev,
				"Failed to create channel. Override queues (%u) not power of 2\n",
				vsi->tc_config.tc_info[0].qcount);
			return -EINVAL;
		}

		if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
			pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;

			if (vsi->type == I40E_VSI_MAIN) {
				if (pf->flags & I40E_FLAG_TC_MQPRIO)
					i40e_do_reset(pf, I40E_PF_RESET_FLAG,
						      true);
				else
					i40e_do_reset_safe(pf,
							   I40E_PF_RESET_FLAG);
			}
		}
		/* now onwards for main VSI, number of queues will be value
		 * of TC0's queue count
		 */
	}

	/* By this time, vsi->cnt_q_avail shall be set to non-zero and
	 * it should be more than num_queues
	 */
	if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
		dev_dbg(&pf->pdev->dev,
			"Error: cnt_q_avail (%u) less than num_queues %d\n",
			vsi->cnt_q_avail, ch->num_queue_pairs);
		return -EINVAL;
	}

	/* reconfig_rss only if vsi type is MAIN_VSI */
	if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
		err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
		if (err) {
			dev_info(&pf->pdev->dev,
				 "Error: unable to reconfig rss for num_queues (%u)\n",
				 ch->num_queue_pairs);
			return -EINVAL;
		}
	}

	if (!i40e_setup_channel(pf, vsi, ch)) {
		dev_info(&pf->pdev->dev, "Failed to setup channel\n");
		return -EINVAL;
	}

	dev_info(&pf->pdev->dev,
		 "Setup channel (id:%u) utilizing num_queues %d\n",
		 ch->seid, ch->num_queue_pairs);

6083 6084
	/* configure VSI for BW limit */
	if (ch->max_tx_rate) {
A
Alan Brady 已提交
6085 6086
		u64 credits = ch->max_tx_rate;

6087 6088 6089
		if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
			return -EINVAL;

A
Alan Brady 已提交
6090
		do_div(credits, I40E_BW_CREDIT_DIVISOR);
6091 6092 6093
		dev_dbg(&pf->pdev->dev,
			"Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
			ch->max_tx_rate,
A
Alan Brady 已提交
6094 6095
			credits,
			ch->seid);
6096 6097
	}

6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115
	/* in case of VF, this will be main SRIOV VSI */
	ch->parent_vsi = vsi;

	/* and update main_vsi's count for queue_available to use */
	vsi->cnt_q_avail -= ch->num_queue_pairs;

	return 0;
}

/**
 * i40e_configure_queue_channels - Add queue channel for the given TCs
 * @vsi: VSI to be configured
 *
 * Configures queue channel mapping to the given TCs
 **/
static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
{
	struct i40e_channel *ch;
A
Alan Brady 已提交
6116
	u64 max_rate = 0;
6117 6118 6119
	int ret = 0, i;

	/* Create app vsi with the TCs. Main VSI with TC0 is already set up */
A
Amritha Nambiar 已提交
6120
	vsi->tc_seid_map[0] = vsi->seid;
6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134
	for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (vsi->tc_config.enabled_tc & BIT(i)) {
			ch = kzalloc(sizeof(*ch), GFP_KERNEL);
			if (!ch) {
				ret = -ENOMEM;
				goto err_free;
			}

			INIT_LIST_HEAD(&ch->list);
			ch->num_queue_pairs =
				vsi->tc_config.tc_info[i].qcount;
			ch->base_queue =
				vsi->tc_config.tc_info[i].qoffset;

6135 6136 6137
			/* Bandwidth limit through tc interface is in bytes/s,
			 * change to Mbit/s
			 */
A
Alan Brady 已提交
6138 6139 6140
			max_rate = vsi->mqprio_qopt.max_rate[i];
			do_div(max_rate, I40E_BW_MBPS_DIVISOR);
			ch->max_tx_rate = max_rate;
6141

6142 6143 6144 6145 6146 6147 6148 6149 6150
			list_add_tail(&ch->list, &vsi->ch_list);

			ret = i40e_create_queue_channel(vsi, ch);
			if (ret) {
				dev_err(&vsi->back->pdev->dev,
					"Failed creating queue channel with TC%d: queues %d\n",
					i, ch->num_queue_pairs);
				goto err_free;
			}
A
Amritha Nambiar 已提交
6151
			vsi->tc_seid_map[i] = ch->seid;
6152 6153 6154 6155 6156 6157 6158 6159 6160
		}
	}
	return ret;

err_free:
	i40e_remove_queue_channels(vsi);
	return ret;
}

N
Neerav Parikh 已提交
6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183
/**
 * i40e_veb_config_tc - Configure TCs for given VEB
 * @veb: given VEB
 * @enabled_tc: TC bitmap
 *
 * Configures given TC bitmap for VEB (switching) element
 **/
int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
{
	struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
	struct i40e_pf *pf = veb->pf;
	int ret = 0;
	int i;

	/* No TCs or already enabled TCs just return */
	if (!enabled_tc || veb->enabled_tc == enabled_tc)
		return ret;

	bw_data.tc_valid_bits = enabled_tc;
	/* bw_data.absolute_credits is not set (relative) */

	/* Enable ETS TCs with equal BW Share for now */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
J
Jesse Brandeburg 已提交
6184
		if (enabled_tc & BIT(i))
N
Neerav Parikh 已提交
6185 6186 6187 6188 6189 6190 6191
			bw_data.tc_bw_share_credits[i] = 1;
	}

	ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
						   &bw_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
6192 6193 6194
			 "VEB bw config failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
6195 6196 6197 6198 6199 6200 6201
		goto out;
	}

	/* Update the BW information */
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
		dev_info(&pf->pdev->dev,
6202 6203 6204
			 "Failed getting veb bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240
	}

out:
	return ret;
}

#ifdef CONFIG_I40E_DCB
/**
 * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
 * @pf: PF struct
 *
 * Reconfigure VEB/VSIs on a given PF; it is assumed that
 * the caller would've quiesce all the VSIs before calling
 * this function
 **/
static void i40e_dcb_reconfigure(struct i40e_pf *pf)
{
	u8 tc_map = 0;
	int ret;
	u8 v;

	/* Enable the TCs available on PF to all VEBs */
	tc_map = i40e_pf_get_tc_map(pf);
	for (v = 0; v < I40E_MAX_VEB; v++) {
		if (!pf->veb[v])
			continue;
		ret = i40e_veb_config_tc(pf->veb[v], tc_map);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Failed configuring TC for VEB seid=%d\n",
				 pf->veb[v]->seid);
			/* Will try to configure as many components */
		}
	}

	/* Update each VSI */
M
Mitch Williams 已提交
6241
	for (v = 0; v < pf->num_alloc_vsi; v++) {
N
Neerav Parikh 已提交
6242 6243 6244 6245 6246 6247 6248 6249 6250
		if (!pf->vsi[v])
			continue;

		/* - Enable all TCs for the LAN VSI
		 * - For all others keep them at TC0 for now
		 */
		if (v == pf->lan_vsi)
			tc_map = i40e_pf_get_tc_map(pf);
		else
6251
			tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
N
Neerav Parikh 已提交
6252 6253 6254 6255 6256 6257 6258 6259

		ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Failed configuring TC for VSI seid=%d\n",
				 pf->vsi[v]->seid);
			/* Will try to configure as many components */
		} else {
6260 6261
			/* Re-configure VSI vectors based on updated TC map */
			i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
N
Neerav Parikh 已提交
6262 6263 6264 6265 6266 6267
			if (pf->vsi[v]->netdev)
				i40e_dcbnl_set_all(pf->vsi[v]);
		}
	}
}

6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282
/**
 * i40e_resume_port_tx - Resume port Tx
 * @pf: PF struct
 *
 * Resume a port's Tx and issue a PF reset in case of failure to
 * resume.
 **/
static int i40e_resume_port_tx(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int ret;

	ret = i40e_aq_resume_port_tx(hw, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
6283 6284 6285
			 "Resume Port Tx failed, err %s aq_err %s\n",
			  i40e_stat_str(&pf->hw, ret),
			  i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6286
		/* Schedule PF reset to recover */
6287
		set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6288 6289 6290 6291 6292 6293
		i40e_service_event_schedule(pf);
	}

	return ret;
}

N
Neerav Parikh 已提交
6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305
/**
 * i40e_init_pf_dcb - Initialize DCB configuration
 * @pf: PF being configured
 *
 * Query the current DCB configuration and cache it
 * in the hardware structure
 **/
static int i40e_init_pf_dcb(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int err = 0;

6306 6307 6308 6309 6310
	/* Do not enable DCB for SW1 and SW2 images even if the FW is capable
	 * Also do not enable DCBx if FW LLDP agent is disabled
	 */
	if ((pf->hw_features & I40E_HW_NO_DCB_SUPPORT) ||
	    (pf->flags & I40E_FLAG_DISABLE_FW_LLDP))
6311 6312
		goto out;

N
Neerav Parikh 已提交
6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324
	/* Get the initial DCB configuration */
	err = i40e_init_dcb(hw);
	if (!err) {
		/* Device/Function is not DCBX capable */
		if ((!hw->func_caps.dcb) ||
		    (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
			dev_info(&pf->pdev->dev,
				 "DCBX offload is not supported or is disabled for this PF.\n");
		} else {
			/* When status is not DISABLED then DCBX in FW */
			pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
				       DCB_CAP_DCBX_VER_IEEE;
6325 6326

			pf->flags |= I40E_FLAG_DCB_CAPABLE;
6327 6328 6329
			/* Enable DCB tagging only when more than one TC
			 * or explicitly disable if only one TC
			 */
6330 6331
			if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
				pf->flags |= I40E_FLAG_DCB_ENABLED;
6332 6333
			else
				pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6334 6335
			dev_dbg(&pf->pdev->dev,
				"DCBX offload is supported for this PF.\n");
N
Neerav Parikh 已提交
6336
		}
A
Alan Brady 已提交
6337 6338 6339
	} else if (pf->hw.aq.asq_last_status == I40E_AQ_RC_EPERM) {
		dev_info(&pf->pdev->dev, "FW LLDP disabled for this PF.\n");
		pf->flags |= I40E_FLAG_DISABLE_FW_LLDP;
6340
	} else {
6341
		dev_info(&pf->pdev->dev,
6342 6343 6344
			 "Query for DCB configuration failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, err),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
6345 6346 6347 6348 6349 6350
	}

out:
	return err;
}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
6351 6352 6353 6354 6355 6356
#define SPEED_SIZE 14
#define FC_SIZE 8
/**
 * i40e_print_link_message - print link up or down
 * @vsi: the VSI for which link needs a message
 */
M
Matt Jared 已提交
6357
void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
J
Jesse Brandeburg 已提交
6358
{
6359
	enum i40e_aq_link_speed new_speed;
6360
	struct i40e_pf *pf = vsi->back;
6361 6362
	char *speed = "Unknown";
	char *fc = "Unknown";
6363
	char *fec = "";
6364
	char *req_fec = "";
6365
	char *an = "";
J
Jesse Brandeburg 已提交
6366

6367
	new_speed = pf->hw.phy.link_info.link_speed;
6368 6369

	if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
M
Matt Jared 已提交
6370 6371
		return;
	vsi->current_isup = isup;
6372
	vsi->current_speed = new_speed;
J
Jesse Brandeburg 已提交
6373 6374 6375 6376 6377
	if (!isup) {
		netdev_info(vsi->netdev, "NIC Link is Down\n");
		return;
	}

6378 6379 6380
	/* Warn user if link speed on NPAR enabled partition is not at
	 * least 10GB
	 */
6381 6382 6383
	if (pf->hw.func_caps.npar_enable &&
	    (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
	     pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
6384 6385 6386
		netdev_warn(vsi->netdev,
			    "The partition detected link speed that is less than 10Gbps\n");

6387
	switch (pf->hw.phy.link_info.link_speed) {
J
Jesse Brandeburg 已提交
6388
	case I40E_LINK_SPEED_40GB:
6389
		speed = "40 G";
J
Jesse Brandeburg 已提交
6390
		break;
6391
	case I40E_LINK_SPEED_20GB:
6392
		speed = "20 G";
6393
		break;
6394 6395 6396
	case I40E_LINK_SPEED_25GB:
		speed = "25 G";
		break;
J
Jesse Brandeburg 已提交
6397
	case I40E_LINK_SPEED_10GB:
6398
		speed = "10 G";
J
Jesse Brandeburg 已提交
6399 6400
		break;
	case I40E_LINK_SPEED_1GB:
6401
		speed = "1000 M";
J
Jesse Brandeburg 已提交
6402
		break;
M
Mitch Williams 已提交
6403
	case I40E_LINK_SPEED_100MB:
6404
		speed = "100 M";
M
Mitch Williams 已提交
6405
		break;
J
Jesse Brandeburg 已提交
6406 6407 6408 6409
	default:
		break;
	}

6410
	switch (pf->hw.fc.current_mode) {
J
Jesse Brandeburg 已提交
6411
	case I40E_FC_FULL:
6412
		fc = "RX/TX";
J
Jesse Brandeburg 已提交
6413 6414
		break;
	case I40E_FC_TX_PAUSE:
6415
		fc = "TX";
J
Jesse Brandeburg 已提交
6416 6417
		break;
	case I40E_FC_RX_PAUSE:
6418
		fc = "RX";
J
Jesse Brandeburg 已提交
6419 6420
		break;
	default:
6421
		fc = "None";
J
Jesse Brandeburg 已提交
6422 6423 6424
		break;
	}

6425
	if (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
6426
		req_fec = ", Requested FEC: None";
6427 6428 6429
		fec = ", FEC: None";
		an = ", Autoneg: False";

6430
		if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
6431 6432
			an = ", Autoneg: True";

6433
		if (pf->hw.phy.link_info.fec_info &
6434 6435
		    I40E_AQ_CONFIG_FEC_KR_ENA)
			fec = ", FEC: CL74 FC-FEC/BASE-R";
6436
		else if (pf->hw.phy.link_info.fec_info &
6437 6438
			 I40E_AQ_CONFIG_FEC_RS_ENA)
			fec = ", FEC: CL108 RS-FEC";
6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450

		/* 'CL108 RS-FEC' should be displayed when RS is requested, or
		 * both RS and FC are requested
		 */
		if (vsi->back->hw.phy.link_info.req_fec_info &
		    (I40E_AQ_REQUEST_FEC_KR | I40E_AQ_REQUEST_FEC_RS)) {
			if (vsi->back->hw.phy.link_info.req_fec_info &
			    I40E_AQ_REQUEST_FEC_RS)
				req_fec = ", Requested FEC: CL108 RS-FEC";
			else
				req_fec = ", Requested FEC: CL74 FC-FEC/BASE-R";
		}
6451 6452
	}

6453 6454
	netdev_info(vsi->netdev, "NIC Link is Up, %sbps Full Duplex%s%s%s, Flow Control: %s\n",
		    speed, req_fec, fec, an, fc);
J
Jesse Brandeburg 已提交
6455
}
N
Neerav Parikh 已提交
6456

J
Jesse Brandeburg 已提交
6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471
/**
 * i40e_up_complete - Finish the last steps of bringing up a connection
 * @vsi: the VSI being configured
 **/
static int i40e_up_complete(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int err;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		i40e_vsi_configure_msix(vsi);
	else
		i40e_configure_msi_and_legacy(vsi);

	/* start rings */
F
Filip Sadowski 已提交
6472
	err = i40e_vsi_start_rings(vsi);
J
Jesse Brandeburg 已提交
6473 6474 6475
	if (err)
		return err;

6476
	clear_bit(__I40E_VSI_DOWN, vsi->state);
J
Jesse Brandeburg 已提交
6477 6478 6479 6480 6481
	i40e_napi_enable_all(vsi);
	i40e_vsi_enable_irq(vsi);

	if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
	    (vsi->netdev)) {
J
Jesse Brandeburg 已提交
6482
		i40e_print_link_message(vsi, true);
J
Jesse Brandeburg 已提交
6483 6484 6485
		netif_tx_start_all_queues(vsi->netdev);
		netif_carrier_on(vsi->netdev);
	}
6486 6487

	/* replay FDIR SB filters */
6488 6489
	if (vsi->type == I40E_VSI_FDIR) {
		/* reset fd counters */
6490 6491
		pf->fd_add_err = 0;
		pf->fd_atr_cnt = 0;
6492
		i40e_fdir_filter_restore(vsi);
6493
	}
6494 6495 6496 6497

	/* On the next run of the service_task, notify any clients of the new
	 * opened netdev
	 */
6498
	set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
J
Jesse Brandeburg 已提交
6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515
	i40e_service_event_schedule(pf);

	return 0;
}

/**
 * i40e_vsi_reinit_locked - Reset the VSI
 * @vsi: the VSI being configured
 *
 * Rebuild the ring structs after some configuration
 * has changed, e.g. MTU size.
 **/
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	WARN_ON(in_interrupt());
6516
	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
J
Jesse Brandeburg 已提交
6517 6518 6519 6520
		usleep_range(1000, 2000);
	i40e_down(vsi);

	i40e_up(vsi);
6521
	clear_bit(__I40E_CONFIG_BUSY, pf->state);
J
Jesse Brandeburg 已提交
6522 6523 6524 6525 6526 6527 6528 6529 6530 6531 6532 6533 6534 6535 6536 6537 6538
}

/**
 * i40e_up - Bring the connection back up after being down
 * @vsi: the VSI being configured
 **/
int i40e_up(struct i40e_vsi *vsi)
{
	int err;

	err = i40e_vsi_configure(vsi);
	if (!err)
		err = i40e_up_complete(vsi);

	return err;
}

6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607
/**
 * i40e_force_link_state - Force the link status
 * @pf: board private structure
 * @is_up: whether the link state should be forced up or down
 **/
static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
{
	struct i40e_aq_get_phy_abilities_resp abilities;
	struct i40e_aq_set_phy_config config = {0};
	struct i40e_hw *hw = &pf->hw;
	i40e_status err;
	u64 mask;

	/* Get the current phy config */
	err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
					   NULL);
	if (err) {
		dev_err(&pf->pdev->dev,
			"failed to get phy cap., ret =  %s last_status =  %s\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
		return err;
	}

	/* If link needs to go up, but was not forced to go down,
	 * no need for a flap
	 */
	if (is_up && abilities.phy_type != 0)
		return I40E_SUCCESS;

	/* To force link we need to set bits for all supported PHY types,
	 * but there are now more than 32, so we need to split the bitmap
	 * across two fields.
	 */
	mask = I40E_PHY_TYPES_BITMASK;
	config.phy_type = is_up ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
	config.phy_type_ext = is_up ? (u8)((mask >> 32) & 0xff) : 0;
	/* Copy the old settings, except of phy_type */
	config.abilities = abilities.abilities;
	config.link_speed = abilities.link_speed;
	config.eee_capability = abilities.eee_capability;
	config.eeer = abilities.eeer_val;
	config.low_power_ctrl = abilities.d3_lpan;
	err = i40e_aq_set_phy_config(hw, &config, NULL);

	if (err) {
		dev_err(&pf->pdev->dev,
			"set phy config ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		return err;
	}

	/* Update the link info */
	err = i40e_update_link_info(hw);
	if (err) {
		/* Wait a little bit (on 40G cards it sometimes takes a really
		 * long time for link to come back from the atomic reset)
		 * and try once more
		 */
		msleep(1000);
		i40e_update_link_info(hw);
	}

	i40e_aq_set_link_restart_an(hw, true, NULL);

	return I40E_SUCCESS;
}

J
Jesse Brandeburg 已提交
6608 6609 6610 6611 6612 6613 6614 6615 6616
/**
 * i40e_down - Shutdown the connection processing
 * @vsi: the VSI being stopped
 **/
void i40e_down(struct i40e_vsi *vsi)
{
	int i;

	/* It is assumed that the caller of this function
6617
	 * sets the vsi->state __I40E_VSI_DOWN bit.
J
Jesse Brandeburg 已提交
6618 6619 6620 6621 6622 6623
	 */
	if (vsi->netdev) {
		netif_carrier_off(vsi->netdev);
		netif_tx_disable(vsi->netdev);
	}
	i40e_vsi_disable_irq(vsi);
F
Filip Sadowski 已提交
6624
	i40e_vsi_stop_rings(vsi);
6625 6626 6627
	if (vsi->type == I40E_VSI_MAIN &&
	    vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED)
		i40e_force_link_state(vsi->back, false);
J
Jesse Brandeburg 已提交
6628 6629 6630
	i40e_napi_disable_all(vsi);

	for (i = 0; i < vsi->num_queue_pairs; i++) {
6631
		i40e_clean_tx_ring(vsi->tx_rings[i]);
6632 6633
		if (i40e_enabled_xdp_vsi(vsi))
			i40e_clean_tx_ring(vsi->xdp_rings[i]);
6634
		i40e_clean_rx_ring(vsi->rx_rings[i]);
J
Jesse Brandeburg 已提交
6635
	}
6636

J
Jesse Brandeburg 已提交
6637 6638
}

6639 6640 6641 6642 6643 6644 6645 6646
/**
 * i40e_validate_mqprio_qopt- validate queue mapping info
 * @vsi: the VSI being configured
 * @mqprio_qopt: queue parametrs
 **/
static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
				     struct tc_mqprio_qopt_offload *mqprio_qopt)
{
6647
	u64 sum_max_rate = 0;
A
Alan Brady 已提交
6648
	u64 max_rate = 0;
6649 6650 6651 6652 6653 6654 6655 6656 6657
	int i;

	if (mqprio_qopt->qopt.offset[0] != 0 ||
	    mqprio_qopt->qopt.num_tc < 1 ||
	    mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
		return -EINVAL;
	for (i = 0; ; i++) {
		if (!mqprio_qopt->qopt.count[i])
			return -EINVAL;
6658 6659 6660
		if (mqprio_qopt->min_rate[i]) {
			dev_err(&vsi->back->pdev->dev,
				"Invalid min tx rate (greater than 0) specified\n");
6661
			return -EINVAL;
6662
		}
A
Alan Brady 已提交
6663 6664 6665
		max_rate = mqprio_qopt->max_rate[i];
		do_div(max_rate, I40E_BW_MBPS_DIVISOR);
		sum_max_rate += max_rate;
6666

6667 6668 6669 6670 6671 6672 6673 6674 6675 6676
		if (i >= mqprio_qopt->qopt.num_tc - 1)
			break;
		if (mqprio_qopt->qopt.offset[i + 1] !=
		    (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
			return -EINVAL;
	}
	if (vsi->num_queue_pairs <
	    (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
		return -EINVAL;
	}
6677 6678 6679 6680 6681
	if (sum_max_rate > i40e_get_link_speed(vsi)) {
		dev_err(&vsi->back->pdev->dev,
			"Invalid max tx rate specified\n");
		return -EINVAL;
	}
6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711
	return 0;
}

/**
 * i40e_vsi_set_default_tc_config - set default values for tc configuration
 * @vsi: the VSI being configured
 **/
static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
{
	u16 qcount;
	int i;

	/* Only TC0 is enabled */
	vsi->tc_config.numtc = 1;
	vsi->tc_config.enabled_tc = 1;
	qcount = min_t(int, vsi->alloc_queue_pairs,
		       i40e_pf_get_max_q_per_tc(vsi->back));
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* For the TC that is not enabled set the offset to to default
		 * queue and allocate one queue for the given TC.
		 */
		vsi->tc_config.tc_info[i].qoffset = 0;
		if (i == 0)
			vsi->tc_config.tc_info[i].qcount = qcount;
		else
			vsi->tc_config.tc_info[i].qcount = 1;
		vsi->tc_config.tc_info[i].netdev_tc = 0;
	}
}

J
Jesse Brandeburg 已提交
6712 6713 6714
/**
 * i40e_setup_tc - configure multiple traffic classes
 * @netdev: net device to configure
6715
 * @type_data: tc offload data
J
Jesse Brandeburg 已提交
6716
 **/
6717
static int i40e_setup_tc(struct net_device *netdev, void *type_data)
J
Jesse Brandeburg 已提交
6718
{
6719
	struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
J
Jesse Brandeburg 已提交
6720 6721 6722
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
6723 6724
	u8 enabled_tc = 0, num_tc, hw;
	bool need_reset = false;
J
Jesse Brandeburg 已提交
6725
	int ret = -EINVAL;
6726
	u16 mode;
J
Jesse Brandeburg 已提交
6727 6728
	int i;

6729 6730 6731 6732 6733 6734 6735
	num_tc = mqprio_qopt->qopt.num_tc;
	hw = mqprio_qopt->qopt.hw;
	mode = mqprio_qopt->mode;
	if (!hw) {
		pf->flags &= ~I40E_FLAG_TC_MQPRIO;
		memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
		goto config_tc;
J
Jesse Brandeburg 已提交
6736 6737 6738 6739
	}

	/* Check if MFP enabled */
	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6740 6741 6742
		netdev_info(netdev,
			    "Configuring TC not supported in MFP mode\n");
		return ret;
J
Jesse Brandeburg 已提交
6743
	}
6744 6745 6746
	switch (mode) {
	case TC_MQPRIO_MODE_DCB:
		pf->flags &= ~I40E_FLAG_TC_MQPRIO;
J
Jesse Brandeburg 已提交
6747

6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779
		/* Check if DCB enabled to continue */
		if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
			netdev_info(netdev,
				    "DCB is not enabled for adapter\n");
			return ret;
		}

		/* Check whether tc count is within enabled limit */
		if (num_tc > i40e_pf_get_num_tc(pf)) {
			netdev_info(netdev,
				    "TC count greater than enabled on link for adapter\n");
			return ret;
		}
		break;
	case TC_MQPRIO_MODE_CHANNEL:
		if (pf->flags & I40E_FLAG_DCB_ENABLED) {
			netdev_info(netdev,
				    "Full offload of TC Mqprio options is not supported when DCB is enabled\n");
			return ret;
		}
		if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
			return ret;
		ret = i40e_validate_mqprio_qopt(vsi, mqprio_qopt);
		if (ret)
			return ret;
		memcpy(&vsi->mqprio_qopt, mqprio_qopt,
		       sizeof(*mqprio_qopt));
		pf->flags |= I40E_FLAG_TC_MQPRIO;
		pf->flags &= ~I40E_FLAG_DCB_ENABLED;
		break;
	default:
		return -EINVAL;
J
Jesse Brandeburg 已提交
6780 6781
	}

6782
config_tc:
J
Jesse Brandeburg 已提交
6783
	/* Generate TC map for number of tc requested */
6784
	for (i = 0; i < num_tc; i++)
J
Jesse Brandeburg 已提交
6785
		enabled_tc |= BIT(i);
J
Jesse Brandeburg 已提交
6786 6787

	/* Requesting same TC configuration as already enabled */
6788 6789
	if (enabled_tc == vsi->tc_config.enabled_tc &&
	    mode != TC_MQPRIO_MODE_CHANNEL)
J
Jesse Brandeburg 已提交
6790 6791 6792 6793 6794
		return 0;

	/* Quiesce VSI queues */
	i40e_quiesce_vsi(vsi);

6795 6796 6797
	if (!hw && !(pf->flags & I40E_FLAG_TC_MQPRIO))
		i40e_remove_queue_channels(vsi);

J
Jesse Brandeburg 已提交
6798 6799 6800 6801 6802
	/* Configure VSI for enabled TCs */
	ret = i40e_vsi_config_tc(vsi, enabled_tc);
	if (ret) {
		netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
			    vsi->seid);
6803
		need_reset = true;
J
Jesse Brandeburg 已提交
6804 6805 6806
		goto exit;
	}

6807
	if (pf->flags & I40E_FLAG_TC_MQPRIO) {
6808
		if (vsi->mqprio_qopt.max_rate[0]) {
A
Alan Brady 已提交
6809 6810 6811
			u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];

			do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
6812 6813
			ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
			if (!ret) {
A
Alan Brady 已提交
6814 6815 6816
				u64 credits = max_tx_rate;

				do_div(credits, I40E_BW_CREDIT_DIVISOR);
6817 6818 6819
				dev_dbg(&vsi->back->pdev->dev,
					"Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
					max_tx_rate,
A
Alan Brady 已提交
6820
					credits,
6821 6822 6823 6824 6825 6826
					vsi->seid);
			} else {
				need_reset = true;
				goto exit;
			}
		}
6827
		ret = i40e_configure_queue_channels(vsi);
N
Neerav Parikh 已提交
6828
		if (ret) {
6829 6830
			netdev_info(netdev,
				    "Failed configuring queue channels\n");
6831
			need_reset = true;
6832
			goto exit;
N
Neerav Parikh 已提交
6833 6834 6835
		}
	}

J
Jesse Brandeburg 已提交
6836
exit:
6837 6838 6839 6840 6841
	/* Reset the configuration data to defaults, only TC0 is enabled */
	if (need_reset) {
		i40e_vsi_set_default_tc_config(vsi);
		need_reset = false;
	}
N
Neerav Parikh 已提交
6842

6843 6844
	/* Unquiesce VSI */
	i40e_unquiesce_vsi(vsi);
J
Jesse Brandeburg 已提交
6845 6846
	return ret;
}
N
Neerav Parikh 已提交
6847

6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875
/**
 * i40e_set_cld_element - sets cloud filter element data
 * @filter: cloud filter rule
 * @cld: ptr to cloud filter element data
 *
 * This is helper function to copy data into cloud filter element
 **/
static inline void
i40e_set_cld_element(struct i40e_cloud_filter *filter,
		     struct i40e_aqc_cloud_filters_element_data *cld)
{
	int i, j;
	u32 ipa;

	memset(cld, 0, sizeof(*cld));
	ether_addr_copy(cld->outer_mac, filter->dst_mac);
	ether_addr_copy(cld->inner_mac, filter->src_mac);

	if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
		return;

	if (filter->n_proto == ETH_P_IPV6) {
#define IPV6_MAX_INDEX	(ARRAY_SIZE(filter->dst_ipv6) - 1)
		for (i = 0, j = 0; i < ARRAY_SIZE(filter->dst_ipv6);
		     i++, j += 2) {
			ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
			ipa = cpu_to_le32(ipa);
			memcpy(&cld->ipaddr.raw_v6.data[j], &ipa, sizeof(ipa));
N
Neerav Parikh 已提交
6876
		}
6877 6878 6879
	} else {
		ipa = be32_to_cpu(filter->dst_ipv4);
		memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
N
Neerav Parikh 已提交
6880
	}
6881 6882 6883 6884 6885 6886 6887 6888

	cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));

	/* tenant_id is not supported by FW now, once the support is enabled
	 * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
	 */
	if (filter->tenant_id)
		return;
N
Neerav Parikh 已提交
6889 6890
}

6891
/**
6892 6893 6894 6895
 * i40e_add_del_cloud_filter - Add/del cloud filter
 * @vsi: pointer to VSI
 * @filter: cloud filter rule
 * @add: if true, add, if false, delete
6896
 *
6897 6898
 * Add or delete a cloud filter for a specific flow spec.
 * Returns 0 if the filter were successfully added.
6899
 **/
6900 6901
int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
			      struct i40e_cloud_filter *filter, bool add)
6902
{
6903 6904
	struct i40e_aqc_cloud_filters_element_data cld_filter;
	struct i40e_pf *pf = vsi->back;
6905
	int ret;
6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930 6931 6932 6933 6934 6935 6936 6937 6938
	static const u16 flag_table[128] = {
		[I40E_CLOUD_FILTER_FLAGS_OMAC]  =
			I40E_AQC_ADD_CLOUD_FILTER_OMAC,
		[I40E_CLOUD_FILTER_FLAGS_IMAC]  =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC,
		[I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
		[I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
		[I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
			I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
		[I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
			I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
		[I40E_CLOUD_FILTER_FLAGS_IIP] =
			I40E_AQC_ADD_CLOUD_FILTER_IIP,
	};

	if (filter->flags >= ARRAY_SIZE(flag_table))
		return I40E_ERR_CONFIG;

	/* copy element needed to add cloud filter from filter */
	i40e_set_cld_element(filter, &cld_filter);

	if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
		cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
					     I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);

	if (filter->n_proto == ETH_P_IPV6)
		cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
						I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
	else
		cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
						I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
6939

6940 6941 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951
	if (add)
		ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
						&cld_filter, 1);
	else
		ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
						&cld_filter, 1);
	if (ret)
		dev_dbg(&pf->pdev->dev,
			"Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
			add ? "add" : "delete", filter->dst_port, ret,
			pf->hw.aq.asq_last_status);
	else
6952
		dev_info(&pf->pdev->dev,
6953 6954
			 "%s cloud filter for VSI: %d\n",
			 add ? "Added" : "Deleted", filter->seid);
6955 6956 6957
	return ret;
}

N
Neerav Parikh 已提交
6958
/**
6959 6960 6961 6962
 * i40e_add_del_cloud_filter_big_buf - Add/del cloud filter using big_buf
 * @vsi: pointer to VSI
 * @filter: cloud filter rule
 * @add: if true, add, if false, delete
N
Neerav Parikh 已提交
6963
 *
6964 6965
 * Add or delete a cloud filter for a specific flow spec using big buffer.
 * Returns 0 if the filter were successfully added.
N
Neerav Parikh 已提交
6966
 **/
6967 6968 6969
int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
				      struct i40e_cloud_filter *filter,
				      bool add)
N
Neerav Parikh 已提交
6970
{
6971 6972 6973
	struct i40e_aqc_cloud_filters_element_bb cld_filter;
	struct i40e_pf *pf = vsi->back;
	int ret;
N
Neerav Parikh 已提交
6974

6975 6976 6977 6978 6979
	/* Both (src/dst) valid mac_addr are not supported */
	if ((is_valid_ether_addr(filter->dst_mac) &&
	     is_valid_ether_addr(filter->src_mac)) ||
	    (is_multicast_ether_addr(filter->dst_mac) &&
	     is_multicast_ether_addr(filter->src_mac)))
6980
		return -EOPNOTSUPP;
6981

6982 6983
	/* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
	 * ports are not supported via big buffer now.
6984
	 */
6985 6986
	if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
		return -EOPNOTSUPP;
6987

6988 6989 6990
	/* adding filter using src_port/src_ip is not supported at this stage */
	if (filter->src_port || filter->src_ipv4 ||
	    !ipv6_addr_any(&filter->ip.v6.src_ip6))
6991
		return -EOPNOTSUPP;
6992 6993 6994 6995 6996 6997 6998 6999 7000 7001

	/* copy element needed to add cloud filter from filter */
	i40e_set_cld_element(filter, &cld_filter.element);

	if (is_valid_ether_addr(filter->dst_mac) ||
	    is_valid_ether_addr(filter->src_mac) ||
	    is_multicast_ether_addr(filter->dst_mac) ||
	    is_multicast_ether_addr(filter->src_mac)) {
		/* MAC + IP : unsupported mode */
		if (filter->dst_ipv4)
7002
			return -EOPNOTSUPP;
7003 7004 7005 7006 7007 7008 7009 7010 7011 7012 7013

		/* since we validated that L4 port must be valid before
		 * we get here, start with respective "flags" value
		 * and update if vlan is present or not
		 */
		cld_filter.element.flags =
			cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);

		if (filter->vlan_id) {
			cld_filter.element.flags =
			cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
N
Neerav Parikh 已提交
7014
		}
7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025

	} else if (filter->dst_ipv4 ||
		   !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
		cld_filter.element.flags =
				cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
		if (filter->n_proto == ETH_P_IPV6)
			cld_filter.element.flags |=
				cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
		else
			cld_filter.element.flags |=
				cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7026
	} else {
7027 7028 7029
		dev_err(&pf->pdev->dev,
			"either mac or ip has to be valid for cloud filter\n");
		return -EINVAL;
N
Neerav Parikh 已提交
7030 7031
	}

7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062
	/* Now copy L4 port in Byte 6..7 in general fields */
	cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
						be16_to_cpu(filter->dst_port);

	if (add) {
		/* Validate current device switch mode, change if necessary */
		ret = i40e_validate_and_set_switch_mode(vsi);
		if (ret) {
			dev_err(&pf->pdev->dev,
				"failed to set switch mode, ret %d\n",
				ret);
			return ret;
		}

		ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
						   &cld_filter, 1);
	} else {
		ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
						   &cld_filter, 1);
	}

	if (ret)
		dev_dbg(&pf->pdev->dev,
			"Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
			add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
	else
		dev_info(&pf->pdev->dev,
			 "%s cloud filter for VSI: %d, L4 port: %d\n",
			 add ? "add" : "delete", filter->seid,
			 ntohs(filter->dst_port));
	return ret;
N
Neerav Parikh 已提交
7063
}
7064

J
Jesse Brandeburg 已提交
7065
/**
7066 7067 7068 7069 7070 7071 7072 7073 7074
 * i40e_parse_cls_flower - Parse tc flower filters provided by kernel
 * @vsi: Pointer to VSI
 * @cls_flower: Pointer to struct tc_cls_flower_offload
 * @filter: Pointer to cloud filter structure
 *
 **/
static int i40e_parse_cls_flower(struct i40e_vsi *vsi,
				 struct tc_cls_flower_offload *f,
				 struct i40e_cloud_filter *filter)
J
Jesse Brandeburg 已提交
7075
{
7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092
	u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
	struct i40e_pf *pf = vsi->back;
	u8 field_flags = 0;

	if (f->dissector->used_keys &
	    ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
	      BIT(FLOW_DISSECTOR_KEY_BASIC) |
	      BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_VLAN) |
	      BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_PORTS) |
	      BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
		dev_err(&pf->pdev->dev, "Unsupported key used: 0x%x\n",
			f->dissector->used_keys);
		return -EOPNOTSUPP;
	}
J
Jesse Brandeburg 已提交
7093

7094 7095 7096 7097 7098
	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
		struct flow_dissector_key_keyid *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_KEYID,
						  f->key);
7099

7100 7101 7102 7103 7104 7105 7106 7107 7108
		struct flow_dissector_key_keyid *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_KEYID,
						  f->mask);

		if (mask->keyid != 0)
			field_flags |= I40E_CLOUD_FIELD_TEN_ID;

		filter->tenant_id = be32_to_cpu(key->keyid);
J
Jesse Brandeburg 已提交
7109 7110
	}

7111 7112 7113 7114 7115
	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
		struct flow_dissector_key_basic *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_BASIC,
						  f->key);
7116

7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130
		struct flow_dissector_key_basic *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_BASIC,
						  f->mask);

		n_proto_key = ntohs(key->n_proto);
		n_proto_mask = ntohs(mask->n_proto);

		if (n_proto_key == ETH_P_ALL) {
			n_proto_key = 0;
			n_proto_mask = 0;
		}
		filter->n_proto = n_proto_key & n_proto_mask;
		filter->ip_proto = key->ip_proto;
J
Jesse Brandeburg 已提交
7131 7132
	}

7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163 7164 7165
	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
		struct flow_dissector_key_eth_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ETH_ADDRS,
						  f->key);

		struct flow_dissector_key_eth_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ETH_ADDRS,
						  f->mask);

		/* use is_broadcast and is_zero to check for all 0xf or 0 */
		if (!is_zero_ether_addr(mask->dst)) {
			if (is_broadcast_ether_addr(mask->dst)) {
				field_flags |= I40E_CLOUD_FIELD_OMAC;
			} else {
				dev_err(&pf->pdev->dev, "Bad ether dest mask %pM\n",
					mask->dst);
				return I40E_ERR_CONFIG;
			}
		}

		if (!is_zero_ether_addr(mask->src)) {
			if (is_broadcast_ether_addr(mask->src)) {
				field_flags |= I40E_CLOUD_FIELD_IMAC;
			} else {
				dev_err(&pf->pdev->dev, "Bad ether src mask %pM\n",
					mask->src);
				return I40E_ERR_CONFIG;
			}
		}
		ether_addr_copy(filter->dst_mac, key->dst);
		ether_addr_copy(filter->src_mac, key->src);
J
Jesse Brandeburg 已提交
7166 7167
	}

7168 7169 7170 7171 7172 7173 7174 7175 7176
	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
		struct flow_dissector_key_vlan *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_VLAN,
						  f->key);
		struct flow_dissector_key_vlan *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_VLAN,
						  f->mask);
7177

7178 7179 7180
		if (mask->vlan_id) {
			if (mask->vlan_id == VLAN_VID_MASK) {
				field_flags |= I40E_CLOUD_FIELD_IVLAN;
7181

7182 7183 7184 7185 7186 7187
			} else {
				dev_err(&pf->pdev->dev, "Bad vlan mask 0x%04x\n",
					mask->vlan_id);
				return I40E_ERR_CONFIG;
			}
		}
7188

7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252
		filter->vlan_id = cpu_to_be16(key->vlan_id);
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
		struct flow_dissector_key_control *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_CONTROL,
						  f->key);

		addr_type = key->addr_type;
	}

	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
		struct flow_dissector_key_ipv4_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV4_ADDRS,
						  f->key);
		struct flow_dissector_key_ipv4_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV4_ADDRS,
						  f->mask);

		if (mask->dst) {
			if (mask->dst == cpu_to_be32(0xffffffff)) {
				field_flags |= I40E_CLOUD_FIELD_IIP;
			} else {
				mask->dst = be32_to_cpu(mask->dst);
				dev_err(&pf->pdev->dev, "Bad ip dst mask %pI4\n",
					&mask->dst);
				return I40E_ERR_CONFIG;
			}
		}

		if (mask->src) {
			if (mask->src == cpu_to_be32(0xffffffff)) {
				field_flags |= I40E_CLOUD_FIELD_IIP;
			} else {
				mask->src = be32_to_cpu(mask->src);
				dev_err(&pf->pdev->dev, "Bad ip src mask %pI4\n",
					&mask->src);
				return I40E_ERR_CONFIG;
			}
		}

		if (field_flags & I40E_CLOUD_FIELD_TEN_ID) {
			dev_err(&pf->pdev->dev, "Tenant id not allowed for ip filter\n");
			return I40E_ERR_CONFIG;
		}
		filter->dst_ipv4 = key->dst;
		filter->src_ipv4 = key->src;
	}

	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
		struct flow_dissector_key_ipv6_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV6_ADDRS,
						  f->key);
		struct flow_dissector_key_ipv6_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV6_ADDRS,
						  f->mask);

		/* src and dest IPV6 address should not be LOOPBACK
		 * (0:0:0:0:0:0:0:1), which can be represented as ::1
7253
		 */
7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275 7276 7277 7278 7279 7280 7281 7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309
		if (ipv6_addr_loopback(&key->dst) ||
		    ipv6_addr_loopback(&key->src)) {
			dev_err(&pf->pdev->dev,
				"Bad ipv6, addr is LOOPBACK\n");
			return I40E_ERR_CONFIG;
		}
		if (!ipv6_addr_any(&mask->dst) || !ipv6_addr_any(&mask->src))
			field_flags |= I40E_CLOUD_FIELD_IIP;

		memcpy(&filter->src_ipv6, &key->src.s6_addr32,
		       sizeof(filter->src_ipv6));
		memcpy(&filter->dst_ipv6, &key->dst.s6_addr32,
		       sizeof(filter->dst_ipv6));
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
		struct flow_dissector_key_ports *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_PORTS,
						  f->key);
		struct flow_dissector_key_ports *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_PORTS,
						  f->mask);

		if (mask->src) {
			if (mask->src == cpu_to_be16(0xffff)) {
				field_flags |= I40E_CLOUD_FIELD_IIP;
			} else {
				dev_err(&pf->pdev->dev, "Bad src port mask 0x%04x\n",
					be16_to_cpu(mask->src));
				return I40E_ERR_CONFIG;
			}
		}

		if (mask->dst) {
			if (mask->dst == cpu_to_be16(0xffff)) {
				field_flags |= I40E_CLOUD_FIELD_IIP;
			} else {
				dev_err(&pf->pdev->dev, "Bad dst port mask 0x%04x\n",
					be16_to_cpu(mask->dst));
				return I40E_ERR_CONFIG;
			}
		}

		filter->dst_port = key->dst;
		filter->src_port = key->src;

		switch (filter->ip_proto) {
		case IPPROTO_TCP:
		case IPPROTO_UDP:
			break;
		default:
			dev_err(&pf->pdev->dev,
				"Only UDP and TCP transport are supported\n");
			return -EINVAL;
7310
		}
7311
	}
7312 7313 7314
	filter->flags = field_flags;
	return 0;
}
7315

7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348
/**
 * i40e_handle_tclass: Forward to a traffic class on the device
 * @vsi: Pointer to VSI
 * @tc: traffic class index on the device
 * @filter: Pointer to cloud filter structure
 *
 **/
static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
			      struct i40e_cloud_filter *filter)
{
	struct i40e_channel *ch, *ch_tmp;

	/* direct to a traffic class on the same device */
	if (tc == 0) {
		filter->seid = vsi->seid;
		return 0;
	} else if (vsi->tc_config.enabled_tc & BIT(tc)) {
		if (!filter->dst_port) {
			dev_err(&vsi->back->pdev->dev,
				"Specify destination port to direct to traffic class that is not default\n");
			return -EINVAL;
		}
		if (list_empty(&vsi->ch_list))
			return -EINVAL;
		list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
					 list) {
			if (ch->seid == vsi->tc_seid_map[tc])
				filter->seid = ch->seid;
		}
		return 0;
	}
	dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
	return -EINVAL;
J
Jesse Brandeburg 已提交
7349
}
N
Neerav Parikh 已提交
7350

J
Jesse Brandeburg 已提交
7351
/**
7352 7353 7354 7355
 * i40e_configure_clsflower - Configure tc flower filters
 * @vsi: Pointer to VSI
 * @cls_flower: Pointer to struct tc_cls_flower_offload
 *
J
Jesse Brandeburg 已提交
7356
 **/
7357 7358
static int i40e_configure_clsflower(struct i40e_vsi *vsi,
				    struct tc_cls_flower_offload *cls_flower)
J
Jesse Brandeburg 已提交
7359
{
7360 7361
	int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
	struct i40e_cloud_filter *filter = NULL;
J
Jesse Brandeburg 已提交
7362
	struct i40e_pf *pf = vsi->back;
7363
	int err = 0;
J
Jesse Brandeburg 已提交
7364

7365 7366
	if (tc < 0) {
		dev_err(&vsi->back->pdev->dev, "Invalid traffic class\n");
7367
		return -EOPNOTSUPP;
7368
	}
J
Jesse Brandeburg 已提交
7369

7370 7371 7372
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
	    test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
		return -EBUSY;
J
Jesse Brandeburg 已提交
7373

7374 7375 7376 7377 7378 7379
	if (pf->fdir_pf_active_filters ||
	    (!hlist_empty(&pf->fdir_filter_list))) {
		dev_err(&vsi->back->pdev->dev,
			"Flow Director Sideband filters exists, turn ntuple off to configure cloud filters\n");
		return -EINVAL;
	}
J
Jesse Brandeburg 已提交
7380

7381 7382 7383 7384 7385
	if (vsi->back->flags & I40E_FLAG_FD_SB_ENABLED) {
		dev_err(&vsi->back->pdev->dev,
			"Disable Flow Director Sideband, configuring Cloud filters via tc-flower\n");
		vsi->back->flags &= ~I40E_FLAG_FD_SB_ENABLED;
		vsi->back->flags |= I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
J
Jesse Brandeburg 已提交
7386
	}
7387

7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412
	filter = kzalloc(sizeof(*filter), GFP_KERNEL);
	if (!filter)
		return -ENOMEM;

	filter->cookie = cls_flower->cookie;

	err = i40e_parse_cls_flower(vsi, cls_flower, filter);
	if (err < 0)
		goto err;

	err = i40e_handle_tclass(vsi, tc, filter);
	if (err < 0)
		goto err;

	/* Add cloud filter */
	if (filter->dst_port)
		err = i40e_add_del_cloud_filter_big_buf(vsi, filter, true);
	else
		err = i40e_add_del_cloud_filter(vsi, filter, true);

	if (err) {
		dev_err(&pf->pdev->dev,
			"Failed to add cloud filter, err %s\n",
			i40e_stat_str(&pf->hw, err));
		goto err;
7413
	}
7414

7415 7416
	/* add filter to the ordered list */
	INIT_HLIST_NODE(&filter->cloud_node);
J
Jesse Brandeburg 已提交
7417

7418 7419 7420 7421 7422 7423 7424 7425
	hlist_add_head(&filter->cloud_node, &pf->cloud_filter_list);

	pf->num_cloud_filters++;

	return err;
err:
	kfree(filter);
	return err;
J
Jesse Brandeburg 已提交
7426 7427 7428
}

/**
7429 7430 7431
 * i40e_find_cloud_filter - Find the could filter in the list
 * @vsi: Pointer to VSI
 * @cookie: filter specific cookie
J
Jesse Brandeburg 已提交
7432 7433
 *
 **/
7434 7435
static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
							unsigned long *cookie)
J
Jesse Brandeburg 已提交
7436
{
7437 7438
	struct i40e_cloud_filter *filter = NULL;
	struct hlist_node *node2;
J
Jesse Brandeburg 已提交
7439

7440 7441 7442 7443 7444
	hlist_for_each_entry_safe(filter, node2,
				  &vsi->back->cloud_filter_list, cloud_node)
		if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
			return filter;
	return NULL;
J
Jesse Brandeburg 已提交
7445 7446 7447
}

/**
7448 7449 7450 7451
 * i40e_delete_clsflower - Remove tc flower filters
 * @vsi: Pointer to VSI
 * @cls_flower: Pointer to struct tc_cls_flower_offload
 *
J
Jesse Brandeburg 已提交
7452
 **/
7453 7454
static int i40e_delete_clsflower(struct i40e_vsi *vsi,
				 struct tc_cls_flower_offload *cls_flower)
J
Jesse Brandeburg 已提交
7455
{
7456 7457 7458
	struct i40e_cloud_filter *filter = NULL;
	struct i40e_pf *pf = vsi->back;
	int err = 0;
J
Jesse Brandeburg 已提交
7459

7460
	filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);
J
Jesse Brandeburg 已提交
7461

7462 7463
	if (!filter)
		return -EINVAL;
J
Jesse Brandeburg 已提交
7464

7465
	hash_del(&filter->cloud_node);
J
Jesse Brandeburg 已提交
7466

7467 7468 7469 7470
	if (filter->dst_port)
		err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
	else
		err = i40e_add_del_cloud_filter(vsi, filter, false);
J
Jesse Brandeburg 已提交
7471

7472 7473 7474 7475 7476 7477
	kfree(filter);
	if (err) {
		dev_err(&pf->pdev->dev,
			"Failed to delete cloud filter, err %s\n",
			i40e_stat_str(&pf->hw, err));
		return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
J
Jesse Brandeburg 已提交
7478
	}
7479

7480 7481 7482 7483 7484 7485 7486 7487 7488
	pf->num_cloud_filters--;
	if (!pf->num_cloud_filters)
		if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
		    !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
			pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
			pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
		}
	return 0;
J
Jesse Brandeburg 已提交
7489 7490 7491
}

/**
7492
 * i40e_setup_tc_cls_flower - flower classifier offloads
J
Jesse Brandeburg 已提交
7493
 * @netdev: net device to configure
7494
 * @type_data: offload data
J
Jesse Brandeburg 已提交
7495
 **/
7496 7497
static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
				    struct tc_cls_flower_offload *cls_flower)
J
Jesse Brandeburg 已提交
7498 7499 7500
{
	struct i40e_vsi *vsi = np->vsi;

7501 7502 7503 7504 7505 7506 7507 7508 7509
	switch (cls_flower->command) {
	case TC_CLSFLOWER_REPLACE:
		return i40e_configure_clsflower(vsi, cls_flower);
	case TC_CLSFLOWER_DESTROY:
		return i40e_delete_clsflower(vsi, cls_flower);
	case TC_CLSFLOWER_STATS:
		return -EOPNOTSUPP;
	default:
		return -EINVAL;
J
Jesse Brandeburg 已提交
7510
	}
7511
}
J
Jesse Brandeburg 已提交
7512

7513 7514 7515 7516
static int i40e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
				  void *cb_priv)
{
	struct i40e_netdev_priv *np = cb_priv;
J
Jesse Brandeburg 已提交
7517

7518 7519 7520
	if (!tc_cls_can_offload_and_chain0(np->vsi->netdev, type_data))
		return -EOPNOTSUPP;

7521 7522 7523
	switch (type) {
	case TC_SETUP_CLSFLOWER:
		return i40e_setup_tc_cls_flower(np, type_data);
J
Jesse Brandeburg 已提交
7524

7525 7526
	default:
		return -EOPNOTSUPP;
J
Jesse Brandeburg 已提交
7527
	}
7528
}
J
Jesse Brandeburg 已提交
7529

7530 7531 7532 7533
static int i40e_setup_tc_block(struct net_device *dev,
			       struct tc_block_offload *f)
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
J
Jesse Brandeburg 已提交
7534

7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545 7546 7547
	if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
		return -EOPNOTSUPP;

	switch (f->command) {
	case TC_BLOCK_BIND:
		return tcf_block_cb_register(f->block, i40e_setup_tc_block_cb,
					     np, np);
	case TC_BLOCK_UNBIND:
		tcf_block_cb_unregister(f->block, i40e_setup_tc_block_cb, np);
		return 0;
	default:
		return -EOPNOTSUPP;
	}
J
Jesse Brandeburg 已提交
7548 7549
}

7550
static int __i40e_setup_tc(struct net_device *netdev, enum tc_setup_type type,
7551
			   void *type_data)
7552
{
7553
	switch (type) {
7554
	case TC_SETUP_QDISC_MQPRIO:
7555 7556 7557 7558
		return i40e_setup_tc(netdev, type_data);
	case TC_SETUP_BLOCK:
		return i40e_setup_tc_block(netdev, type_data);
	default:
7559
		return -EOPNOTSUPP;
7560
	}
7561 7562
}

J
Jesse Brandeburg 已提交
7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573 7574
/**
 * i40e_open - Called when a network interface is made active
 * @netdev: network interface device structure
 *
 * The open entry point is called when a network interface is made
 * active by the system (IFF_UP).  At this point all resources needed
 * for transmit and receive operations are allocated, the interrupt
 * handler is registered with the OS, the netdev watchdog subtask is
 * enabled, and the stack is notified that the interface is ready.
 *
 * Returns 0 on success, negative value on failure
 **/
7575
int i40e_open(struct net_device *netdev)
J
Jesse Brandeburg 已提交
7576 7577 7578 7579 7580 7581
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int err;

7582
	/* disallow open during test or if eeprom is broken */
7583 7584
	if (test_bit(__I40E_TESTING, pf->state) ||
	    test_bit(__I40E_BAD_EEPROM, pf->state))
J
Jesse Brandeburg 已提交
7585 7586 7587 7588
		return -EBUSY;

	netif_carrier_off(netdev);

7589 7590 7591
	if (i40e_force_link_state(pf, true))
		return -EAGAIN;

7592 7593 7594 7595
	err = i40e_vsi_open(vsi);
	if (err)
		return err;

7596 7597 7598 7599 7600 7601 7602 7603
	/* configure global TSO hardware offload settings */
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
						       TCP_FLAG_FIN) >> 16);
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
						       TCP_FLAG_FIN |
						       TCP_FLAG_CWR) >> 16);
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);

7604
	udp_tunnel_get_rx_info(netdev);
7605

7606 7607 7608 7609 7610 7611 7612 7613 7614 7615
	return 0;
}

/**
 * i40e_vsi_open -
 * @vsi: the VSI to open
 *
 * Finish initialization of the VSI.
 *
 * Returns 0 on success, negative value on failure
7616 7617
 *
 * Note: expects to be called while under rtnl_lock()
7618 7619 7620 7621
 **/
int i40e_vsi_open(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
7622
	char int_name[I40E_INT_NAME_STR_LEN];
7623 7624
	int err;

J
Jesse Brandeburg 已提交
7625 7626 7627 7628 7629 7630 7631 7632 7633 7634 7635 7636
	/* allocate descriptors */
	err = i40e_vsi_setup_tx_resources(vsi);
	if (err)
		goto err_setup_tx;
	err = i40e_vsi_setup_rx_resources(vsi);
	if (err)
		goto err_setup_rx;

	err = i40e_vsi_configure(vsi);
	if (err)
		goto err_setup_rx;

7637 7638 7639 7640 7641 7642
	if (vsi->netdev) {
		snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
			 dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
		err = i40e_vsi_request_irq(vsi, int_name);
		if (err)
			goto err_setup_rx;
J
Jesse Brandeburg 已提交
7643

7644 7645 7646 7647 7648
		/* Notify the stack of the actual queue counts. */
		err = netif_set_real_num_tx_queues(vsi->netdev,
						   vsi->num_queue_pairs);
		if (err)
			goto err_set_queues;
7649

7650 7651 7652 7653
		err = netif_set_real_num_rx_queues(vsi->netdev,
						   vsi->num_queue_pairs);
		if (err)
			goto err_set_queues;
7654 7655

	} else if (vsi->type == I40E_VSI_FDIR) {
7656
		snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
7657 7658
			 dev_driver_string(&pf->pdev->dev),
			 dev_name(&pf->pdev->dev));
7659
		err = i40e_vsi_request_irq(vsi, int_name);
7660

7661
	} else {
7662
		err = -EINVAL;
7663 7664
		goto err_setup_rx;
	}
7665

J
Jesse Brandeburg 已提交
7666 7667 7668 7669 7670 7671 7672 7673
	err = i40e_up_complete(vsi);
	if (err)
		goto err_up_complete;

	return 0;

err_up_complete:
	i40e_down(vsi);
7674
err_set_queues:
J
Jesse Brandeburg 已提交
7675 7676 7677 7678 7679 7680
	i40e_vsi_free_irq(vsi);
err_setup_rx:
	i40e_vsi_free_rx_resources(vsi);
err_setup_tx:
	i40e_vsi_free_tx_resources(vsi);
	if (vsi == pf->vsi[pf->lan_vsi])
A
Amritha Nambiar 已提交
7681
		i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
J
Jesse Brandeburg 已提交
7682 7683 7684 7685

	return err;
}

7686 7687
/**
 * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
7688
 * @pf: Pointer to PF
7689 7690 7691 7692 7693 7694 7695
 *
 * This function destroys the hlist where all the Flow Director
 * filters were saved.
 **/
static void i40e_fdir_filter_exit(struct i40e_pf *pf)
{
	struct i40e_fdir_filter *filter;
7696
	struct i40e_flex_pit *pit_entry, *tmp;
7697 7698 7699 7700 7701 7702 7703
	struct hlist_node *node2;

	hlist_for_each_entry_safe(filter, node2,
				  &pf->fdir_filter_list, fdir_node) {
		hlist_del(&filter->fdir_node);
		kfree(filter);
	}
7704

7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716
	list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
		list_del(&pit_entry->list);
		kfree(pit_entry);
	}
	INIT_LIST_HEAD(&pf->l3_flex_pit_list);

	list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
		list_del(&pit_entry->list);
		kfree(pit_entry);
	}
	INIT_LIST_HEAD(&pf->l4_flex_pit_list);

7717
	pf->fdir_pf_active_filters = 0;
7718 7719
	pf->fd_tcp4_filter_cnt = 0;
	pf->fd_udp4_filter_cnt = 0;
7720
	pf->fd_sctp4_filter_cnt = 0;
7721
	pf->fd_ip4_filter_cnt = 0;
7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740

	/* Reprogram the default input set for TCP/IPv4 */
	i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
				I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
				I40E_L4_SRC_MASK | I40E_L4_DST_MASK);

	/* Reprogram the default input set for UDP/IPv4 */
	i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
				I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
				I40E_L4_SRC_MASK | I40E_L4_DST_MASK);

	/* Reprogram the default input set for SCTP/IPv4 */
	i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
				I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
				I40E_L4_SRC_MASK | I40E_L4_DST_MASK);

	/* Reprogram the default input set for Other/IPv4 */
	i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
				I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
7741 7742 7743

	i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
				I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
7744 7745
}

A
Amritha Nambiar 已提交
7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763
/**
 * i40e_cloud_filter_exit - Cleans up the cloud filters
 * @pf: Pointer to PF
 *
 * This function destroys the hlist where all the cloud filters
 * were saved.
 **/
static void i40e_cloud_filter_exit(struct i40e_pf *pf)
{
	struct i40e_cloud_filter *cfilter;
	struct hlist_node *node;

	hlist_for_each_entry_safe(cfilter, node,
				  &pf->cloud_filter_list, cloud_node) {
		hlist_del(&cfilter->cloud_node);
		kfree(cfilter);
	}
	pf->num_cloud_filters = 0;
7764 7765 7766 7767 7768 7769 7770

	if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
	    !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
		pf->flags |= I40E_FLAG_FD_SB_ENABLED;
		pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
		pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
	}
A
Amritha Nambiar 已提交
7771 7772
}

J
Jesse Brandeburg 已提交
7773 7774 7775 7776 7777 7778 7779 7780 7781 7782
/**
 * i40e_close - Disables a network interface
 * @netdev: network interface device structure
 *
 * The close entry point is called when an interface is de-activated
 * by the OS.  The hardware is still under the driver's control, but
 * this netdev interface is disabled.
 *
 * Returns 0, this is not allowed to fail
 **/
7783
int i40e_close(struct net_device *netdev)
J
Jesse Brandeburg 已提交
7784 7785 7786 7787
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

7788
	i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
7789 7790 7791 7792 7793 7794 7795 7796

	return 0;
}

/**
 * i40e_do_reset - Start a PF or Core Reset sequence
 * @pf: board private structure
 * @reset_flags: which reset is requested
7797 7798
 * @lock_acquired: indicates whether or not the lock has been acquired
 * before this function was called.
J
Jesse Brandeburg 已提交
7799 7800 7801 7802 7803
 *
 * The essential difference in resets is that the PF Reset
 * doesn't clear the packet buffers, doesn't reset the PE
 * firmware, and doesn't bother the other PFs on the chip.
 **/
7804
void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
J
Jesse Brandeburg 已提交
7805 7806 7807 7808 7809
{
	u32 val;

	WARN_ON(in_interrupt());

7810

J
Jesse Brandeburg 已提交
7811
	/* do the biggest reset indicated */
7812
	if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
J
Jesse Brandeburg 已提交
7813 7814 7815 7816 7817 7818 7819 7820 7821

		/* Request a Global Reset
		 *
		 * This will start the chip's countdown to the actual full
		 * chip reset event, and a warning interrupt to be sent
		 * to all PFs, including the requestor.  Our handler
		 * for the warning interrupt will deal with the shutdown
		 * and recovery of the switch setup.
		 */
J
Jesse Brandeburg 已提交
7822
		dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
J
Jesse Brandeburg 已提交
7823 7824 7825 7826
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);

7827
	} else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
J
Jesse Brandeburg 已提交
7828 7829 7830 7831 7832

		/* Request a Core Reset
		 *
		 * Same as Global Reset, except does *not* include the MAC/PHY
		 */
J
Jesse Brandeburg 已提交
7833
		dev_dbg(&pf->pdev->dev, "CoreR requested\n");
J
Jesse Brandeburg 已提交
7834 7835 7836 7837 7838
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_CORER_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
		i40e_flush(&pf->hw);

A
Amritha Nambiar 已提交
7839
	} else if (reset_flags & I40E_PF_RESET_FLAG) {
J
Jesse Brandeburg 已提交
7840 7841 7842 7843 7844 7845 7846 7847 7848

		/* Request a PF Reset
		 *
		 * Resets only the PF-specific registers
		 *
		 * This goes directly to the tear-down and rebuild of
		 * the switch, since we need to do all the recovery as
		 * for the Core Reset.
		 */
J
Jesse Brandeburg 已提交
7849
		dev_dbg(&pf->pdev->dev, "PFR requested\n");
7850
		i40e_handle_reset_warning(pf, lock_acquired);
J
Jesse Brandeburg 已提交
7851

7852
	} else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
J
Jesse Brandeburg 已提交
7853 7854 7855 7856 7857
		int v;

		/* Find the VSI(s) that requested a re-init */
		dev_info(&pf->pdev->dev,
			 "VSI reinit requested\n");
M
Mitch Williams 已提交
7858
		for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
7859
			struct i40e_vsi *vsi = pf->vsi[v];
J
Jesse Brandeburg 已提交
7860

J
Jesse Brandeburg 已提交
7861
			if (vsi != NULL &&
7862
			    test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
7863
					       vsi->state))
J
Jesse Brandeburg 已提交
7864 7865
				i40e_vsi_reinit_locked(pf->vsi[v]);
		}
7866
	} else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
7867 7868 7869 7870 7871 7872
		int v;

		/* Find the VSI(s) that needs to be brought down */
		dev_info(&pf->pdev->dev, "VSI down requested\n");
		for (v = 0; v < pf->num_alloc_vsi; v++) {
			struct i40e_vsi *vsi = pf->vsi[v];
J
Jesse Brandeburg 已提交
7873

7874
			if (vsi != NULL &&
7875
			    test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
7876 7877
					       vsi->state)) {
				set_bit(__I40E_VSI_DOWN, vsi->state);
7878 7879 7880
				i40e_down(vsi);
			}
		}
J
Jesse Brandeburg 已提交
7881 7882 7883 7884 7885 7886
	} else {
		dev_info(&pf->pdev->dev,
			 "bad reset request 0x%08x\n", reset_flags);
	}
}

N
Neerav Parikh 已提交
7887 7888 7889 7890 7891 7892 7893 7894 7895 7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907 7908
#ifdef CONFIG_I40E_DCB
/**
 * i40e_dcb_need_reconfig - Check if DCB needs reconfig
 * @pf: board private structure
 * @old_cfg: current DCB config
 * @new_cfg: new DCB config
 **/
bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
			    struct i40e_dcbx_config *old_cfg,
			    struct i40e_dcbx_config *new_cfg)
{
	bool need_reconfig = false;

	/* Check if ETS configuration has changed */
	if (memcmp(&new_cfg->etscfg,
		   &old_cfg->etscfg,
		   sizeof(new_cfg->etscfg))) {
		/* If Priority Table has changed reconfig is needed */
		if (memcmp(&new_cfg->etscfg.prioritytable,
			   &old_cfg->etscfg.prioritytable,
			   sizeof(new_cfg->etscfg.prioritytable))) {
			need_reconfig = true;
J
Jesse Brandeburg 已提交
7909
			dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
N
Neerav Parikh 已提交
7910 7911 7912 7913 7914
		}

		if (memcmp(&new_cfg->etscfg.tcbwtable,
			   &old_cfg->etscfg.tcbwtable,
			   sizeof(new_cfg->etscfg.tcbwtable)))
J
Jesse Brandeburg 已提交
7915
			dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
N
Neerav Parikh 已提交
7916 7917 7918 7919

		if (memcmp(&new_cfg->etscfg.tsatable,
			   &old_cfg->etscfg.tsatable,
			   sizeof(new_cfg->etscfg.tsatable)))
J
Jesse Brandeburg 已提交
7920
			dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
N
Neerav Parikh 已提交
7921 7922 7923 7924 7925 7926 7927
	}

	/* Check if PFC configuration has changed */
	if (memcmp(&new_cfg->pfc,
		   &old_cfg->pfc,
		   sizeof(new_cfg->pfc))) {
		need_reconfig = true;
J
Jesse Brandeburg 已提交
7928
		dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
N
Neerav Parikh 已提交
7929 7930 7931 7932 7933
	}

	/* Check if APP Table has changed */
	if (memcmp(&new_cfg->app,
		   &old_cfg->app,
7934
		   sizeof(new_cfg->app))) {
N
Neerav Parikh 已提交
7935
		need_reconfig = true;
J
Jesse Brandeburg 已提交
7936
		dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
7937
	}
N
Neerav Parikh 已提交
7938

S
Shannon Nelson 已提交
7939
	dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
N
Neerav Parikh 已提交
7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958
	return need_reconfig;
}

/**
 * i40e_handle_lldp_event - Handle LLDP Change MIB event
 * @pf: board private structure
 * @e: event info posted on ARQ
 **/
static int i40e_handle_lldp_event(struct i40e_pf *pf,
				  struct i40e_arq_event_info *e)
{
	struct i40e_aqc_lldp_get_mib *mib =
		(struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_dcbx_config tmp_dcbx_cfg;
	bool need_reconfig = false;
	int ret = 0;
	u8 type;

7959
	/* Not DCB capable or capability disabled */
7960
	if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
7961 7962
		return ret;

N
Neerav Parikh 已提交
7963 7964 7965
	/* Ignore if event is not for Nearest Bridge */
	type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
		& I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
S
Shannon Nelson 已提交
7966
	dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
N
Neerav Parikh 已提交
7967 7968 7969 7970 7971
	if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
		return ret;

	/* Check MIB Type and return if event for Remote MIB update */
	type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
7972
	dev_dbg(&pf->pdev->dev,
S
Shannon Nelson 已提交
7973
		"LLDP event mib type %s\n", type ? "remote" : "local");
N
Neerav Parikh 已提交
7974 7975 7976 7977 7978 7979 7980 7981
	if (type == I40E_AQ_LLDP_MIB_REMOTE) {
		/* Update the remote cached instance and return */
		ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
				I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
				&hw->remote_dcbx_config);
		goto exit;
	}

7982
	/* Store the old configuration */
7983
	tmp_dcbx_cfg = hw->local_dcbx_config;
7984

7985 7986
	/* Reset the old DCBx configuration data */
	memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
7987 7988
	/* Get updated DCBX data from firmware */
	ret = i40e_get_dcb_config(&pf->hw);
N
Neerav Parikh 已提交
7989
	if (ret) {
7990 7991 7992 7993
		dev_info(&pf->pdev->dev,
			 "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
7994 7995 7996 7997
		goto exit;
	}

	/* No change detected in DCBX configs */
7998 7999
	if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
		    sizeof(tmp_dcbx_cfg))) {
J
Jesse Brandeburg 已提交
8000
		dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
N
Neerav Parikh 已提交
8001 8002 8003
		goto exit;
	}

8004 8005
	need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
					       &hw->local_dcbx_config);
N
Neerav Parikh 已提交
8006

8007
	i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
N
Neerav Parikh 已提交
8008 8009 8010 8011

	if (!need_reconfig)
		goto exit;

8012
	/* Enable DCB tagging only when more than one TC */
8013
	if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
8014 8015 8016 8017
		pf->flags |= I40E_FLAG_DCB_ENABLED;
	else
		pf->flags &= ~I40E_FLAG_DCB_ENABLED;

8018
	set_bit(__I40E_PORT_SUSPENDED, pf->state);
N
Neerav Parikh 已提交
8019 8020 8021 8022 8023 8024
	/* Reconfiguration needed quiesce all VSIs */
	i40e_pf_quiesce_all_vsi(pf);

	/* Changes in configuration update VEB/VSI */
	i40e_dcb_reconfigure(pf);

8025 8026
	ret = i40e_resume_port_tx(pf);

8027
	clear_bit(__I40E_PORT_SUSPENDED, pf->state);
8028
	/* In case of error no point in resuming VSIs */
8029 8030 8031
	if (ret)
		goto exit;

8032 8033
	/* Wait for the PF's queues to be disabled */
	ret = i40e_pf_wait_queues_disabled(pf);
8034 8035
	if (ret) {
		/* Schedule PF reset to recover */
8036
		set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
8037 8038
		i40e_service_event_schedule(pf);
	} else {
8039
		i40e_pf_unquiesce_all_vsi(pf);
8040 8041
	set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
	set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
8042 8043
	}

N
Neerav Parikh 已提交
8044 8045 8046 8047 8048
exit:
	return ret;
}
#endif /* CONFIG_I40E_DCB */

8049 8050 8051 8052 8053 8054 8055 8056 8057
/**
 * i40e_do_reset_safe - Protected reset path for userland calls.
 * @pf: board private structure
 * @reset_flags: which reset is requested
 *
 **/
void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
{
	rtnl_lock();
8058
	i40e_do_reset(pf, reset_flags, true);
8059 8060 8061
	rtnl_unlock();
}

J
Jesse Brandeburg 已提交
8062 8063 8064 8065 8066 8067 8068 8069 8070 8071 8072 8073 8074 8075 8076 8077 8078 8079 8080
/**
 * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
 * @pf: board private structure
 * @e: event info posted on ARQ
 *
 * Handler for LAN Queue Overflow Event generated by the firmware for PF
 * and VF queues
 **/
static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
					   struct i40e_arq_event_info *e)
{
	struct i40e_aqc_lan_overflow *data =
		(struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
	u32 queue = le32_to_cpu(data->prtdcb_rupto);
	u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vf *vf;
	u16 vf_id;

J
Jesse Brandeburg 已提交
8081 8082
	dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
		queue, qtx_ctl);
J
Jesse Brandeburg 已提交
8083 8084 8085 8086 8087 8088 8089 8090 8091 8092 8093 8094 8095 8096 8097

	/* Queue belongs to VF, find the VF and issue VF reset */
	if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
	    >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
		vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
			 >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
		vf_id -= hw->func_caps.vf_base_id;
		vf = &pf->vf[vf_id];
		i40e_vc_notify_vf_reset(vf);
		/* Allow VF to process pending reset notification */
		msleep(20);
		i40e_reset_vf(vf, false);
	}
}

8098
/**
8099 8100 8101
 * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
 * @pf: board private structure
 **/
8102
u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
8103
{
8104
	u32 val, fcnt_prog;
8105 8106 8107 8108 8109 8110 8111

	val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
	fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
	return fcnt_prog;
}

/**
8112
 * i40e_get_current_fd_count - Get total FD filters programmed for this PF
8113 8114
 * @pf: board private structure
 **/
8115
u32 i40e_get_current_fd_count(struct i40e_pf *pf)
8116
{
8117 8118
	u32 val, fcnt_prog;

8119 8120 8121 8122 8123 8124
	val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
	fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
		    ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
		      I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
	return fcnt_prog;
}
8125

8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139 8140
/**
 * i40e_get_global_fd_count - Get total FD filters programmed on device
 * @pf: board private structure
 **/
u32 i40e_get_global_fd_count(struct i40e_pf *pf)
{
	u32 val, fcnt_prog;

	val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
	fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
		    ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
		     I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
	return fcnt_prog;
}

8141 8142 8143 8144 8145 8146
/**
 * i40e_reenable_fdir_sb - Restore FDir SB capability
 * @pf: board private structure
 **/
static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
{
8147
	if (test_and_clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158
		if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
		    (I40E_DEBUG_FD & pf->hw.debug_mask))
			dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
}

/**
 * i40e_reenable_fdir_atr - Restore FDir ATR capability
 * @pf: board private structure
 **/
static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
{
8159
	if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
8160 8161 8162 8163 8164 8165 8166 8167 8168
		/* ATR uses the same filtering logic as SB rules. It only
		 * functions properly if the input set mask is at the default
		 * settings. It is safe to restore the default input set
		 * because there are no active TCPv4 filter rules.
		 */
		i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
					I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
					I40E_L4_SRC_MASK | I40E_L4_DST_MASK);

8169 8170 8171 8172 8173 8174
		if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
		    (I40E_DEBUG_FD & pf->hw.debug_mask))
			dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
	}
}

8175 8176 8177 8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216 8217 8218 8219
/**
 * i40e_delete_invalid_filter - Delete an invalid FDIR filter
 * @pf: board private structure
 * @filter: FDir filter to remove
 */
static void i40e_delete_invalid_filter(struct i40e_pf *pf,
				       struct i40e_fdir_filter *filter)
{
	/* Update counters */
	pf->fdir_pf_active_filters--;
	pf->fd_inv = 0;

	switch (filter->flow_type) {
	case TCP_V4_FLOW:
		pf->fd_tcp4_filter_cnt--;
		break;
	case UDP_V4_FLOW:
		pf->fd_udp4_filter_cnt--;
		break;
	case SCTP_V4_FLOW:
		pf->fd_sctp4_filter_cnt--;
		break;
	case IP_USER_FLOW:
		switch (filter->ip4_proto) {
		case IPPROTO_TCP:
			pf->fd_tcp4_filter_cnt--;
			break;
		case IPPROTO_UDP:
			pf->fd_udp4_filter_cnt--;
			break;
		case IPPROTO_SCTP:
			pf->fd_sctp4_filter_cnt--;
			break;
		case IPPROTO_IP:
			pf->fd_ip4_filter_cnt--;
			break;
		}
		break;
	}

	/* Remove the filter from the list and free memory */
	hlist_del(&filter->fdir_node);
	kfree(filter);
}

8220 8221 8222 8223 8224 8225
/**
 * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
 * @pf: board private structure
 **/
void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
{
8226
	struct i40e_fdir_filter *filter;
8227
	u32 fcnt_prog, fcnt_avail;
8228
	struct hlist_node *node;
8229

8230
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
8231 8232
		return;

8233
	/* Check if we have enough room to re-enable FDir SB capability. */
8234
	fcnt_prog = i40e_get_global_fd_count(pf);
8235
	fcnt_avail = pf->fdir_pf_filter_count;
8236 8237
	if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
	    (pf->fd_add_err == 0) ||
8238 8239
	    (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt))
		i40e_reenable_fdir_sb(pf);
8240

8241 8242 8243
	/* We should wait for even more space before re-enabling ATR.
	 * Additionally, we cannot enable ATR as long as we still have TCP SB
	 * rules active.
8244
	 */
8245
	if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) &&
8246 8247
	    (pf->fd_tcp4_filter_cnt == 0))
		i40e_reenable_fdir_atr(pf);
8248 8249 8250 8251

	/* if hw had a problem adding a filter, delete it */
	if (pf->fd_inv > 0) {
		hlist_for_each_entry_safe(filter, node,
8252 8253 8254
					  &pf->fdir_filter_list, fdir_node)
			if (filter->fd_id == pf->fd_inv)
				i40e_delete_invalid_filter(pf, filter);
8255
	}
8256 8257
}

8258
#define I40E_MIN_FD_FLUSH_INTERVAL 10
8259
#define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
8260 8261 8262 8263 8264 8265
/**
 * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
 * @pf: board private structure
 **/
static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
{
8266
	unsigned long min_flush_time;
8267
	int flush_wait_retry = 50;
8268 8269
	bool disable_atr = false;
	int fd_room;
8270 8271
	int reg;

8272 8273 8274
	if (!time_after(jiffies, pf->fd_flush_timestamp +
				 (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
		return;
8275

8276 8277 8278 8279 8280 8281 8282 8283 8284 8285 8286 8287 8288 8289 8290
	/* If the flush is happening too quick and we have mostly SB rules we
	 * should not re-enable ATR for some time.
	 */
	min_flush_time = pf->fd_flush_timestamp +
			 (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
	fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;

	if (!(time_after(jiffies, min_flush_time)) &&
	    (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
		if (I40E_DEBUG_FD & pf->hw.debug_mask)
			dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
		disable_atr = true;
	}

	pf->fd_flush_timestamp = jiffies;
8291
	set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
8292 8293 8294 8295 8296 8297 8298 8299 8300 8301 8302 8303 8304 8305 8306 8307 8308 8309
	/* flush all filters */
	wr32(&pf->hw, I40E_PFQF_CTL_1,
	     I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
	i40e_flush(&pf->hw);
	pf->fd_flush_cnt++;
	pf->fd_add_err = 0;
	do {
		/* Check FD flush status every 5-6msec */
		usleep_range(5000, 6000);
		reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
		if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
			break;
	} while (flush_wait_retry--);
	if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
		dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
	} else {
		/* replay sideband filters */
		i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
8310
		if (!disable_atr && !pf->fd_tcp4_filter_cnt)
8311
			clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
8312
		clear_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
8313 8314
		if (I40E_DEBUG_FD & pf->hw.debug_mask)
			dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
8315 8316 8317 8318 8319 8320 8321
	}
}

/**
 * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
 * @pf: board private structure
 **/
8322
u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
8323 8324 8325 8326 8327 8328 8329 8330 8331 8332 8333
{
	return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
}

/* We can see up to 256 filter programming desc in transit if the filters are
 * being applied really fast; before we see the first
 * filter miss error on Rx queue 0. Accumulating enough error messages before
 * reacting will make sure we don't cause flush too often.
 */
#define I40E_MAX_FD_PROGRAM_ERROR 256

J
Jesse Brandeburg 已提交
8334 8335 8336 8337 8338 8339 8340 8341
/**
 * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
 * @pf: board private structure
 **/
static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
{

	/* if interface is down do nothing */
8342
	if (test_bit(__I40E_DOWN, pf->state))
J
Jesse Brandeburg 已提交
8343
		return;
8344

8345
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
8346 8347
		i40e_fdir_flush_and_replay(pf);

8348 8349
	i40e_fdir_check_and_reenable(pf);

J
Jesse Brandeburg 已提交
8350 8351 8352 8353 8354 8355 8356 8357 8358
}

/**
 * i40e_vsi_link_event - notify VSI of a link event
 * @vsi: vsi to be notified
 * @link_up: link up or down
 **/
static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
{
8359
	if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
J
Jesse Brandeburg 已提交
8360 8361 8362 8363 8364 8365 8366 8367 8368 8369 8370 8371 8372 8373 8374 8375 8376 8377 8378
		return;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
		if (!vsi->netdev || !vsi->netdev_registered)
			break;

		if (link_up) {
			netif_carrier_on(vsi->netdev);
			netif_tx_wake_all_queues(vsi->netdev);
		} else {
			netif_carrier_off(vsi->netdev);
			netif_tx_stop_all_queues(vsi->netdev);
		}
		break;

	case I40E_VSI_SRIOV:
	case I40E_VSI_VMDQ2:
	case I40E_VSI_CTRL:
8379
	case I40E_VSI_IWARP:
J
Jesse Brandeburg 已提交
8380 8381 8382 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395 8396 8397 8398 8399 8400 8401 8402 8403 8404 8405 8406
	case I40E_VSI_MIRROR:
	default:
		/* there is no notification for other VSIs */
		break;
	}
}

/**
 * i40e_veb_link_event - notify elements on the veb of a link event
 * @veb: veb to be notified
 * @link_up: link up or down
 **/
static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
{
	struct i40e_pf *pf;
	int i;

	if (!veb || !veb->pf)
		return;
	pf = veb->pf;

	/* depth first... */
	for (i = 0; i < I40E_MAX_VEB; i++)
		if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
			i40e_veb_link_event(pf->veb[i], link_up);

	/* ... now the local VSIs */
M
Mitch Williams 已提交
8407
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
8408 8409 8410 8411 8412 8413 8414 8415 8416 8417
		if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
			i40e_vsi_link_event(pf->vsi[i], link_up);
}

/**
 * i40e_link_event - Update netif_carrier status
 * @pf: board private structure
 **/
static void i40e_link_event(struct i40e_pf *pf)
{
M
Mitch Williams 已提交
8418
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8419
	u8 new_link_speed, old_link_speed;
8420 8421
	i40e_status status;
	bool new_link, old_link;
J
Jesse Brandeburg 已提交
8422

8423 8424 8425
	/* save off old link status information */
	pf->hw.phy.link_info_old = pf->hw.phy.link_info;

8426 8427 8428
	/* set this to force the get_link_status call to refresh state */
	pf->hw.phy.get_link_info = true;

J
Jesse Brandeburg 已提交
8429
	old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
8430 8431

	status = i40e_get_link_status(&pf->hw, &new_link);
8432 8433 8434

	/* On success, disable temp link polling */
	if (status == I40E_SUCCESS) {
8435
		clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
8436 8437 8438 8439
	} else {
		/* Enable link polling temporarily until i40e_get_link_status
		 * returns I40E_SUCCESS
		 */
8440
		set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
8441 8442 8443 8444 8445
		dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
			status);
		return;
	}

8446 8447
	old_link_speed = pf->hw.phy.link_info_old.link_speed;
	new_link_speed = pf->hw.phy.link_info.link_speed;
J
Jesse Brandeburg 已提交
8448

8449
	if (new_link == old_link &&
8450
	    new_link_speed == old_link_speed &&
8451
	    (test_bit(__I40E_VSI_DOWN, vsi->state) ||
M
Mitch Williams 已提交
8452
	     new_link == netif_carrier_ok(vsi->netdev)))
J
Jesse Brandeburg 已提交
8453
		return;
M
Mitch Williams 已提交
8454

8455
	i40e_print_link_message(vsi, new_link);
J
Jesse Brandeburg 已提交
8456 8457 8458 8459 8460 8461 8462

	/* Notify the base of the switch tree connected to
	 * the link.  Floating VEBs are not notified.
	 */
	if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
		i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
	else
M
Mitch Williams 已提交
8463
		i40e_vsi_link_event(vsi, new_link);
J
Jesse Brandeburg 已提交
8464 8465 8466

	if (pf->vf)
		i40e_vc_notify_link_state(pf);
J
Jacob Keller 已提交
8467 8468 8469

	if (pf->flags & I40E_FLAG_PTP)
		i40e_ptp_set_increment(pf);
J
Jesse Brandeburg 已提交
8470 8471 8472
}

/**
8473
 * i40e_watchdog_subtask - periodic checks not using event driven response
J
Jesse Brandeburg 已提交
8474 8475 8476 8477 8478 8479 8480
 * @pf: board private structure
 **/
static void i40e_watchdog_subtask(struct i40e_pf *pf)
{
	int i;

	/* if interface is down do nothing */
8481
	if (test_bit(__I40E_DOWN, pf->state) ||
8482
	    test_bit(__I40E_CONFIG_BUSY, pf->state))
J
Jesse Brandeburg 已提交
8483 8484
		return;

8485 8486 8487 8488 8489 8490
	/* make sure we don't do these things too often */
	if (time_before(jiffies, (pf->service_timer_previous +
				  pf->service_timer_period)))
		return;
	pf->service_timer_previous = jiffies;

8491
	if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
8492
	    test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
S
Shannon Nelson 已提交
8493
		i40e_link_event(pf);
8494

J
Jesse Brandeburg 已提交
8495 8496 8497
	/* Update the stats for active netdevs so the network stack
	 * can look at updated numbers whenever it cares to
	 */
M
Mitch Williams 已提交
8498
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
8499 8500 8501
		if (pf->vsi[i] && pf->vsi[i]->netdev)
			i40e_update_stats(pf->vsi[i]);

8502 8503 8504 8505 8506 8507
	if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
		/* Update the stats for the active switching components */
		for (i = 0; i < I40E_MAX_VEB; i++)
			if (pf->veb[i])
				i40e_update_veb_stats(pf->veb[i]);
	}
J
Jacob Keller 已提交
8508

8509
	i40e_ptp_rx_hang(pf);
8510
	i40e_ptp_tx_hang(pf);
J
Jesse Brandeburg 已提交
8511 8512 8513 8514 8515 8516 8517 8518 8519 8520
}

/**
 * i40e_reset_subtask - Set up for resetting the device and driver
 * @pf: board private structure
 **/
static void i40e_reset_subtask(struct i40e_pf *pf)
{
	u32 reset_flags = 0;

8521
	if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
J
Jesse Brandeburg 已提交
8522
		reset_flags |= BIT(__I40E_REINIT_REQUESTED);
8523
		clear_bit(__I40E_REINIT_REQUESTED, pf->state);
J
Jesse Brandeburg 已提交
8524
	}
8525
	if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
J
Jesse Brandeburg 已提交
8526
		reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
8527
		clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
J
Jesse Brandeburg 已提交
8528
	}
8529
	if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
J
Jesse Brandeburg 已提交
8530
		reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
8531
		clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
J
Jesse Brandeburg 已提交
8532
	}
8533
	if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
J
Jesse Brandeburg 已提交
8534
		reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
8535
		clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
J
Jesse Brandeburg 已提交
8536
	}
8537 8538 8539
	if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
		reset_flags |= BIT(__I40E_DOWN_REQUESTED);
		clear_bit(__I40E_DOWN_REQUESTED, pf->state);
8540
	}
J
Jesse Brandeburg 已提交
8541 8542 8543 8544

	/* If there's a recovery already waiting, it takes
	 * precedence before starting a new reset sequence.
	 */
8545
	if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
8546 8547 8548
		i40e_prep_for_reset(pf, false);
		i40e_reset(pf);
		i40e_rebuild(pf, false, false);
J
Jesse Brandeburg 已提交
8549 8550 8551 8552
	}

	/* If we're already down or resetting, just bail */
	if (reset_flags &&
8553
	    !test_bit(__I40E_DOWN, pf->state) &&
8554
	    !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
8555
		i40e_do_reset(pf, reset_flags, false);
8556
	}
J
Jesse Brandeburg 已提交
8557 8558 8559 8560 8561 8562 8563 8564 8565 8566 8567 8568 8569
}

/**
 * i40e_handle_link_event - Handle link event
 * @pf: board private structure
 * @e: event info posted on ARQ
 **/
static void i40e_handle_link_event(struct i40e_pf *pf,
				   struct i40e_arq_event_info *e)
{
	struct i40e_aqc_get_link_status *status =
		(struct i40e_aqc_get_link_status *)&e->desc.params.raw;

8570 8571 8572 8573 8574 8575 8576 8577
	/* Do a new status request to re-enable LSE reporting
	 * and load new status information into the hw struct
	 * This completely ignores any state information
	 * in the ARQ event info, instead choosing to always
	 * issue the AQ update link status command.
	 */
	i40e_link_event(pf);

8578 8579
	/* Check if module meets thermal requirements */
	if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
8580
		dev_err(&pf->pdev->dev,
8581 8582 8583 8584 8585 8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 8597
			"Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
		dev_err(&pf->pdev->dev,
			"Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
	} else {
		/* check for unqualified module, if link is down, suppress
		 * the message if link was forced to be down.
		 */
		if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
		    (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
		    (!(status->link_info & I40E_AQ_LINK_UP)) &&
		    (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
			dev_err(&pf->pdev->dev,
				"Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
			dev_err(&pf->pdev->dev,
				"Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
		}
	}
J
Jesse Brandeburg 已提交
8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610
}

/**
 * i40e_clean_adminq_subtask - Clean the AdminQ rings
 * @pf: board private structure
 **/
static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
{
	struct i40e_arq_event_info event;
	struct i40e_hw *hw = &pf->hw;
	u16 pending, i = 0;
	i40e_status ret;
	u16 opcode;
8611
	u32 oldval;
J
Jesse Brandeburg 已提交
8612 8613
	u32 val;

8614
	/* Do not run clean AQ when PF reset fails */
8615
	if (test_bit(__I40E_RESET_FAILED, pf->state))
8616 8617
		return;

8618 8619 8620 8621
	/* check for error indications */
	val = rd32(&pf->hw, pf->hw.aq.arq.len);
	oldval = val;
	if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
M
Mitch Williams 已提交
8622 8623
		if (hw->debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
8624 8625 8626
		val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
	}
	if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
M
Mitch Williams 已提交
8627 8628
		if (hw->debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
8629
		val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
8630
		pf->arq_overflows++;
8631 8632
	}
	if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
M
Mitch Williams 已提交
8633 8634
		if (hw->debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
8635 8636 8637 8638 8639 8640 8641 8642
		val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
	}
	if (oldval != val)
		wr32(&pf->hw, pf->hw.aq.arq.len, val);

	val = rd32(&pf->hw, pf->hw.aq.asq.len);
	oldval = val;
	if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
M
Mitch Williams 已提交
8643 8644
		if (pf->hw.debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
8645 8646 8647
		val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
	}
	if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
M
Mitch Williams 已提交
8648 8649
		if (pf->hw.debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
8650 8651 8652
		val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
	}
	if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
M
Mitch Williams 已提交
8653 8654
		if (pf->hw.debug_mask & I40E_DEBUG_AQ)
			dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
8655 8656 8657 8658 8659
		val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
	}
	if (oldval != val)
		wr32(&pf->hw, pf->hw.aq.asq.len, val);

M
Mitch Williams 已提交
8660 8661
	event.buf_len = I40E_MAX_AQ_BUF_SIZE;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
J
Jesse Brandeburg 已提交
8662 8663 8664 8665 8666
	if (!event.msg_buf)
		return;

	do {
		ret = i40e_clean_arq_element(hw, &event, &pending);
M
Mitch Williams 已提交
8667
		if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
J
Jesse Brandeburg 已提交
8668
			break;
M
Mitch Williams 已提交
8669
		else if (ret) {
J
Jesse Brandeburg 已提交
8670 8671 8672 8673 8674 8675 8676 8677 8678 8679 8680 8681 8682 8683 8684 8685
			dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
			break;
		}

		opcode = le16_to_cpu(event.desc.opcode);
		switch (opcode) {

		case i40e_aqc_opc_get_link_status:
			i40e_handle_link_event(pf, &event);
			break;
		case i40e_aqc_opc_send_msg_to_pf:
			ret = i40e_vc_process_vf_msg(pf,
					le16_to_cpu(event.desc.retval),
					le32_to_cpu(event.desc.cookie_high),
					le32_to_cpu(event.desc.cookie_low),
					event.msg_buf,
M
Mitch Williams 已提交
8686
					event.msg_len);
J
Jesse Brandeburg 已提交
8687 8688
			break;
		case i40e_aqc_opc_lldp_update_mib:
J
Jesse Brandeburg 已提交
8689
			dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
N
Neerav Parikh 已提交
8690 8691 8692 8693 8694
#ifdef CONFIG_I40E_DCB
			rtnl_lock();
			ret = i40e_handle_lldp_event(pf, &event);
			rtnl_unlock();
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
8695 8696
			break;
		case i40e_aqc_opc_event_lan_overflow:
J
Jesse Brandeburg 已提交
8697
			dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
J
Jesse Brandeburg 已提交
8698 8699
			i40e_handle_lan_overflow_event(pf, &event);
			break;
8700 8701 8702
		case i40e_aqc_opc_send_msg_to_peer:
			dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
			break;
8703 8704
		case i40e_aqc_opc_nvm_erase:
		case i40e_aqc_opc_nvm_update:
8705
		case i40e_aqc_opc_oem_post_update:
8706 8707 8708
			i40e_debug(&pf->hw, I40E_DEBUG_NVM,
				   "ARQ NVM operation 0x%04x completed\n",
				   opcode);
8709
			break;
J
Jesse Brandeburg 已提交
8710 8711
		default:
			dev_info(&pf->pdev->dev,
8712
				 "ARQ: Unknown event 0x%04x ignored\n",
8713
				 opcode);
J
Jesse Brandeburg 已提交
8714 8715
			break;
		}
8716 8717 8718
	} while (i++ < pf->adminq_work_limit);

	if (i < pf->adminq_work_limit)
8719
		clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
J
Jesse Brandeburg 已提交
8720 8721 8722 8723 8724 8725 8726 8727 8728 8729

	/* re-enable Admin queue interrupt cause */
	val = rd32(hw, I40E_PFINT_ICR0_ENA);
	val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, val);
	i40e_flush(hw);

	kfree(event.msg_buf);
}

8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 8740 8741 8742 8743 8744
/**
 * i40e_verify_eeprom - make sure eeprom is good to use
 * @pf: board private structure
 **/
static void i40e_verify_eeprom(struct i40e_pf *pf)
{
	int err;

	err = i40e_diag_eeprom_test(&pf->hw);
	if (err) {
		/* retry in case of garbage read */
		err = i40e_diag_eeprom_test(&pf->hw);
		if (err) {
			dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
				 err);
8745
			set_bit(__I40E_BAD_EEPROM, pf->state);
8746 8747 8748
		}
	}

8749
	if (!err && test_bit(__I40E_BAD_EEPROM, pf->state)) {
8750
		dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
8751
		clear_bit(__I40E_BAD_EEPROM, pf->state);
8752 8753 8754
	}
}

8755 8756
/**
 * i40e_enable_pf_switch_lb
8757
 * @pf: pointer to the PF structure
8758 8759 8760 8761 8762 8763 8764
 *
 * enable switch loop back or die - no point in a return value
 **/
static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
8765
	int ret;
8766 8767 8768 8769

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
8770 8771
	ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (ret) {
8772
		dev_info(&pf->pdev->dev,
8773 8774 8775
			 "couldn't get PF vsi config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8776 8777 8778 8779 8780 8781
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

8782 8783
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
8784
		dev_info(&pf->pdev->dev,
8785 8786 8787
			 "update vsi switch failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8788 8789 8790 8791 8792
	}
}

/**
 * i40e_disable_pf_switch_lb
8793
 * @pf: pointer to the PF structure
8794 8795 8796 8797 8798 8799 8800
 *
 * disable switch loop back or die - no point in a return value
 **/
static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
8801
	int ret;
8802 8803 8804 8805

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
8806 8807
	ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (ret) {
8808
		dev_info(&pf->pdev->dev,
8809 8810 8811
			 "couldn't get PF vsi config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8812 8813 8814 8815 8816 8817
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

8818 8819
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
8820
		dev_info(&pf->pdev->dev,
8821 8822 8823
			 "update vsi switch failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8824 8825 8826
	}
}

8827 8828 8829 8830 8831 8832 8833 8834 8835 8836 8837 8838
/**
 * i40e_config_bridge_mode - Configure the HW bridge mode
 * @veb: pointer to the bridge instance
 *
 * Configure the loop back mode for the LAN VSI that is downlink to the
 * specified HW bridge instance. It is expected this function is called
 * when a new HW bridge is instantiated.
 **/
static void i40e_config_bridge_mode(struct i40e_veb *veb)
{
	struct i40e_pf *pf = veb->pf;

8839 8840 8841
	if (pf->hw.debug_mask & I40E_DEBUG_LAN)
		dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
			 veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
8842 8843 8844 8845 8846 8847
	if (veb->bridge_mode & BRIDGE_MODE_VEPA)
		i40e_disable_pf_switch_lb(pf);
	else
		i40e_enable_pf_switch_lb(pf);
}

J
Jesse Brandeburg 已提交
8848 8849 8850 8851 8852 8853 8854 8855 8856 8857 8858 8859 8860 8861 8862 8863 8864
/**
 * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
 * @veb: pointer to the VEB instance
 *
 * This is a recursive function that first builds the attached VSIs then
 * recurses in to build the next layer of VEB.  We track the connections
 * through our own index numbers because the seid's from the HW could
 * change across the reset.
 **/
static int i40e_reconstitute_veb(struct i40e_veb *veb)
{
	struct i40e_vsi *ctl_vsi = NULL;
	struct i40e_pf *pf = veb->pf;
	int v, veb_idx;
	int ret;

	/* build VSI that owns this VEB, temporarily attached to base VEB */
M
Mitch Williams 已提交
8865
	for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
J
Jesse Brandeburg 已提交
8866 8867 8868 8869 8870 8871 8872 8873 8874 8875 8876 8877 8878 8879 8880 8881 8882 8883
		if (pf->vsi[v] &&
		    pf->vsi[v]->veb_idx == veb->idx &&
		    pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
			ctl_vsi = pf->vsi[v];
			break;
		}
	}
	if (!ctl_vsi) {
		dev_info(&pf->pdev->dev,
			 "missing owner VSI for veb_idx %d\n", veb->idx);
		ret = -ENOENT;
		goto end_reconstitute;
	}
	if (ctl_vsi != pf->vsi[pf->lan_vsi])
		ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
	ret = i40e_add_vsi(ctl_vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
8884 8885
			 "rebuild of veb_idx %d owner VSI failed: %d\n",
			 veb->idx, ret);
J
Jesse Brandeburg 已提交
8886 8887 8888 8889 8890 8891 8892 8893 8894
		goto end_reconstitute;
	}
	i40e_vsi_reset_stats(ctl_vsi);

	/* create the VEB in the switch and move the VSI onto the VEB */
	ret = i40e_add_veb(veb, ctl_vsi);
	if (ret)
		goto end_reconstitute;

8895 8896 8897 8898
	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
		veb->bridge_mode = BRIDGE_MODE_VEB;
	else
		veb->bridge_mode = BRIDGE_MODE_VEPA;
8899
	i40e_config_bridge_mode(veb);
8900

J
Jesse Brandeburg 已提交
8901
	/* create the remaining VSIs attached to this VEB */
M
Mitch Williams 已提交
8902
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
8903 8904 8905 8906 8907
		if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
			continue;

		if (pf->vsi[v]->veb_idx == veb->idx) {
			struct i40e_vsi *vsi = pf->vsi[v];
J
Jesse Brandeburg 已提交
8908

J
Jesse Brandeburg 已提交
8909 8910 8911 8912 8913 8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932 8933 8934 8935 8936 8937 8938
			vsi->uplink_seid = veb->seid;
			ret = i40e_add_vsi(vsi);
			if (ret) {
				dev_info(&pf->pdev->dev,
					 "rebuild of vsi_idx %d failed: %d\n",
					 v, ret);
				goto end_reconstitute;
			}
			i40e_vsi_reset_stats(vsi);
		}
	}

	/* create any VEBs attached to this VEB - RECURSION */
	for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
		if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
			pf->veb[veb_idx]->uplink_seid = veb->seid;
			ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
			if (ret)
				break;
		}
	}

end_reconstitute:
	return ret;
}

/**
 * i40e_get_capabilities - get info about the HW
 * @pf: the PF struct
 **/
8939 8940
static int i40e_get_capabilities(struct i40e_pf *pf,
				 enum i40e_admin_queue_opc list_type)
J
Jesse Brandeburg 已提交
8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953 8954
{
	struct i40e_aqc_list_capabilities_element_resp *cap_buf;
	u16 data_size;
	int buf_len;
	int err;

	buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
	do {
		cap_buf = kzalloc(buf_len, GFP_KERNEL);
		if (!cap_buf)
			return -ENOMEM;

		/* this loads the data into the hw struct for us */
		err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
8955 8956
						    &data_size, list_type,
						    NULL);
J
Jesse Brandeburg 已提交
8957 8958 8959 8960 8961 8962 8963 8964
		/* data loaded, buffer no longer needed */
		kfree(cap_buf);

		if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
			/* retry with a larger buffer */
			buf_len = data_size;
		} else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
			dev_info(&pf->pdev->dev,
8965 8966 8967 8968
				 "capability discovery failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, err),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
8969 8970 8971 8972
			return -ENODEV;
		}
	} while (err);

8973 8974 8975 8976 8977 8978 8979 8980 8981 8982 8983 8984 8985 8986 8987 8988 8989 8990 8991 8992 8993 8994 8995 8996 8997 8998 8999 9000
	if (pf->hw.debug_mask & I40E_DEBUG_USER) {
		if (list_type == i40e_aqc_opc_list_func_capabilities) {
			dev_info(&pf->pdev->dev,
				 "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
				 pf->hw.pf_id, pf->hw.func_caps.num_vfs,
				 pf->hw.func_caps.num_msix_vectors,
				 pf->hw.func_caps.num_msix_vectors_vf,
				 pf->hw.func_caps.fd_filters_guaranteed,
				 pf->hw.func_caps.fd_filters_best_effort,
				 pf->hw.func_caps.num_tx_qp,
				 pf->hw.func_caps.num_vsis);
		} else if (list_type == i40e_aqc_opc_list_dev_capabilities) {
			dev_info(&pf->pdev->dev,
				 "switch_mode=0x%04x, function_valid=0x%08x\n",
				 pf->hw.dev_caps.switch_mode,
				 pf->hw.dev_caps.valid_functions);
			dev_info(&pf->pdev->dev,
				 "SR-IOV=%d, num_vfs for all function=%u\n",
				 pf->hw.dev_caps.sr_iov_1_1,
				 pf->hw.dev_caps.num_vfs);
			dev_info(&pf->pdev->dev,
				 "num_vsis=%u, num_rx:%u, num_tx=%u\n",
				 pf->hw.dev_caps.num_vsis,
				 pf->hw.dev_caps.num_rx_qp,
				 pf->hw.dev_caps.num_tx_qp);
		}
	}
	if (list_type == i40e_aqc_opc_list_func_capabilities) {
9001 9002
#define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
		       + pf->hw.func_caps.num_vfs)
9003 9004 9005 9006 9007 9008 9009
		if (pf->hw.revision_id == 0 &&
		    pf->hw.func_caps.num_vsis < DEF_NUM_VSI) {
			dev_info(&pf->pdev->dev,
				 "got num_vsis %d, setting num_vsis to %d\n",
				 pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
			pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
		}
9010
	}
J
Jesse Brandeburg 已提交
9011 9012 9013
	return 0;
}

9014 9015
static int i40e_vsi_clear(struct i40e_vsi *vsi);

J
Jesse Brandeburg 已提交
9016
/**
9017
 * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
J
Jesse Brandeburg 已提交
9018 9019
 * @pf: board private structure
 **/
9020
static void i40e_fdir_sb_setup(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
9021 9022 9023
{
	struct i40e_vsi *vsi;

9024 9025 9026 9027 9028 9029 9030 9031 9032
	/* quick workaround for an NVM issue that leaves a critical register
	 * uninitialized
	 */
	if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
		static const u32 hkey[] = {
			0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
			0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
			0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
			0x95b3a76d};
9033
		int i;
9034 9035 9036 9037 9038

		for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
			wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
	}

9039
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
J
Jesse Brandeburg 已提交
9040 9041
		return;

9042
	/* find existing VSI and see if it needs configuring */
9043
	vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9044 9045

	/* create a new VSI if none exists */
J
Jesse Brandeburg 已提交
9046
	if (!vsi) {
9047 9048
		vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
				     pf->vsi[pf->lan_vsi]->seid, 0);
J
Jesse Brandeburg 已提交
9049 9050
		if (!vsi) {
			dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
9051
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9052
			pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
9053
			return;
J
Jesse Brandeburg 已提交
9054
		}
9055
	}
J
Jesse Brandeburg 已提交
9056

9057
	i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
J
Jesse Brandeburg 已提交
9058 9059 9060 9061 9062 9063 9064 9065
}

/**
 * i40e_fdir_teardown - release the Flow Director resources
 * @pf: board private structure
 **/
static void i40e_fdir_teardown(struct i40e_pf *pf)
{
9066
	struct i40e_vsi *vsi;
J
Jesse Brandeburg 已提交
9067

9068
	i40e_fdir_filter_exit(pf);
9069 9070 9071
	vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
	if (vsi)
		i40e_vsi_release(vsi);
J
Jesse Brandeburg 已提交
9072 9073
}

9074 9075 9076 9077 9078 9079 9080 9081 9082 9083 9084 9085 9086 9087 9088 9089 9090 9091 9092 9093 9094 9095 9096 9097 9098 9099
/**
 * i40e_rebuild_cloud_filters - Rebuilds cloud filters for VSIs
 * @vsi: PF main vsi
 * @seid: seid of main or channel VSIs
 *
 * Rebuilds cloud filters associated with main VSI and channel VSIs if they
 * existed before reset
 **/
static int i40e_rebuild_cloud_filters(struct i40e_vsi *vsi, u16 seid)
{
	struct i40e_cloud_filter *cfilter;
	struct i40e_pf *pf = vsi->back;
	struct hlist_node *node;
	i40e_status ret;

	/* Add cloud filters back if they exist */
	hlist_for_each_entry_safe(cfilter, node, &pf->cloud_filter_list,
				  cloud_node) {
		if (cfilter->seid != seid)
			continue;

		if (cfilter->dst_port)
			ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
								true);
		else
			ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
9100

9101 9102 9103 9104 9105 9106 9107
		if (ret) {
			dev_dbg(&pf->pdev->dev,
				"Failed to rebuild cloud filter, err %s aq_err %s\n",
				i40e_stat_str(&pf->hw, ret),
				i40e_aq_str(&pf->hw,
					    pf->hw.aq.asq_last_status));
			return ret;
J
Jesse Brandeburg 已提交
9108
		}
9109
	}
9110
	return 0;
J
Jesse Brandeburg 已提交
9111 9112 9113
}

/**
9114 9115 9116 9117
 * i40e_rebuild_channels - Rebuilds channel VSIs if they existed before reset
 * @vsi: PF main vsi
 *
 * Rebuilds channel VSIs if they existed before reset
J
Jesse Brandeburg 已提交
9118
 **/
9119
static int i40e_rebuild_channels(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
9120
{
9121 9122
	struct i40e_channel *ch, *ch_tmp;
	i40e_status ret;
J
Jesse Brandeburg 已提交
9123

9124 9125 9126 9127 9128 9129 9130 9131 9132 9133 9134 9135 9136 9137
	if (list_empty(&vsi->ch_list))
		return 0;

	list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
		if (!ch->initialized)
			break;
		/* Proceed with creation of channel (VMDq2) VSI */
		ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "failed to rebuild channels using uplink_seid %u\n",
				 vsi->uplink_seid);
			return ret;
		}
9138 9139 9140 9141 9142 9143 9144 9145 9146 9147 9148
		/* Reconfigure TX queues using QTX_CTL register */
		ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
				 "failed to configure TX rings for channel %u\n",
				 ch->seid);
			return ret;
		}
		/* update 'next_base_queue' */
		vsi->next_base_queue = vsi->next_base_queue +
							ch->num_queue_pairs;
9149
		if (ch->max_tx_rate) {
A
Alan Brady 已提交
9150 9151
			u64 credits = ch->max_tx_rate;

9152 9153 9154 9155
			if (i40e_set_bw_limit(vsi, ch->seid,
					      ch->max_tx_rate))
				return -EINVAL;

A
Alan Brady 已提交
9156
			do_div(credits, I40E_BW_CREDIT_DIVISOR);
9157 9158 9159
			dev_dbg(&vsi->back->pdev->dev,
				"Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
				ch->max_tx_rate,
A
Alan Brady 已提交
9160
				credits,
9161 9162
				ch->seid);
		}
9163 9164 9165 9166 9167 9168 9169
		ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
		if (ret) {
			dev_dbg(&vsi->back->pdev->dev,
				"Failed to rebuild cloud filters for channel VSI %u\n",
				ch->seid);
			return ret;
		}
9170 9171
	}
	return 0;
J
Jesse Brandeburg 已提交
9172 9173 9174
}

/**
A
Anjali Singhai Jain 已提交
9175
 * i40e_prep_for_reset - prep for the core to reset
J
Jesse Brandeburg 已提交
9176
 * @pf: board private structure
9177 9178
 * @lock_acquired: indicates whether or not the lock has been acquired
 * before this function was called.
J
Jesse Brandeburg 已提交
9179
 *
9180
 * Close up the VFs and other things in prep for PF Reset.
A
Anjali Singhai Jain 已提交
9181
  **/
9182
static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired)
J
Jesse Brandeburg 已提交
9183 9184
{
	struct i40e_hw *hw = &pf->hw;
9185
	i40e_status ret = 0;
J
Jesse Brandeburg 已提交
9186 9187
	u32 v;

9188 9189
	clear_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
	if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
S
Shannon Nelson 已提交
9190
		return;
M
Mitch Williams 已提交
9191 9192
	if (i40e_check_asq_alive(&pf->hw))
		i40e_vc_notify_reset(pf);
J
Jesse Brandeburg 已提交
9193

J
Jesse Brandeburg 已提交
9194
	dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
J
Jesse Brandeburg 已提交
9195 9196

	/* quiesce the VSIs and their queues that are not already DOWN */
9197 9198 9199
	/* pf_quiesce_all_vsi modifies netdev structures -rtnl_lock needed */
	if (!lock_acquired)
		rtnl_lock();
J
Jesse Brandeburg 已提交
9200
	i40e_pf_quiesce_all_vsi(pf);
9201 9202
	if (!lock_acquired)
		rtnl_unlock();
J
Jesse Brandeburg 已提交
9203

M
Mitch Williams 已提交
9204
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
9205 9206 9207 9208 9209 9210
		if (pf->vsi[v])
			pf->vsi[v]->seid = 0;
	}

	i40e_shutdown_adminq(&pf->hw);

A
Anjali Singhai Jain 已提交
9211
	/* call shutdown HMC */
9212 9213
	if (hw->hmc.hmc_obj) {
		ret = i40e_shutdown_lan_hmc(hw);
S
Shannon Nelson 已提交
9214
		if (ret)
9215 9216
			dev_warn(&pf->pdev->dev,
				 "shutdown_lan_hmc failed: %d\n", ret);
A
Anjali Singhai Jain 已提交
9217 9218 9219
	}
}

J
Jesse Brandeburg 已提交
9220 9221 9222 9223 9224 9225 9226 9227 9228 9229 9230 9231
/**
 * i40e_send_version - update firmware with driver version
 * @pf: PF struct
 */
static void i40e_send_version(struct i40e_pf *pf)
{
	struct i40e_driver_version dv;

	dv.major_version = DRV_VERSION_MAJOR;
	dv.minor_version = DRV_VERSION_MINOR;
	dv.build_version = DRV_VERSION_BUILD;
	dv.subbuild_version = 0;
9232
	strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
J
Jesse Brandeburg 已提交
9233 9234 9235
	i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
}

9236 9237 9238 9239 9240 9241 9242 9243 9244 9245 9246 9247 9248 9249 9250 9251 9252 9253 9254 9255 9256 9257 9258 9259 9260 9261 9262 9263 9264 9265 9266 9267 9268 9269 9270 9271 9272 9273 9274 9275 9276 9277 9278 9279 9280
/**
 * i40e_get_oem_version - get OEM specific version information
 * @hw: pointer to the hardware structure
 **/
static void i40e_get_oem_version(struct i40e_hw *hw)
{
	u16 block_offset = 0xffff;
	u16 block_length = 0;
	u16 capabilities = 0;
	u16 gen_snap = 0;
	u16 release = 0;

#define I40E_SR_NVM_OEM_VERSION_PTR		0x1B
#define I40E_NVM_OEM_LENGTH_OFFSET		0x00
#define I40E_NVM_OEM_CAPABILITIES_OFFSET	0x01
#define I40E_NVM_OEM_GEN_OFFSET			0x02
#define I40E_NVM_OEM_RELEASE_OFFSET		0x03
#define I40E_NVM_OEM_CAPABILITIES_MASK		0x000F
#define I40E_NVM_OEM_LENGTH			3

	/* Check if pointer to OEM version block is valid. */
	i40e_read_nvm_word(hw, I40E_SR_NVM_OEM_VERSION_PTR, &block_offset);
	if (block_offset == 0xffff)
		return;

	/* Check if OEM version block has correct length. */
	i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_LENGTH_OFFSET,
			   &block_length);
	if (block_length < I40E_NVM_OEM_LENGTH)
		return;

	/* Check if OEM version format is as expected. */
	i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_CAPABILITIES_OFFSET,
			   &capabilities);
	if ((capabilities & I40E_NVM_OEM_CAPABILITIES_MASK) != 0)
		return;

	i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_GEN_OFFSET,
			   &gen_snap);
	i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_RELEASE_OFFSET,
			   &release);
	hw->nvm.oem_ver = (gen_snap << I40E_OEM_SNAP_SHIFT) | release;
	hw->nvm.eetrack = I40E_OEM_EETRACK_ID;
}

A
Anjali Singhai Jain 已提交
9281
/**
9282
 * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
A
Anjali Singhai Jain 已提交
9283 9284
 * @pf: board private structure
 **/
9285
static int i40e_reset(struct i40e_pf *pf)
A
Anjali Singhai Jain 已提交
9286 9287 9288 9289
{
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;

J
Jesse Brandeburg 已提交
9290
	ret = i40e_pf_reset(hw);
9291
	if (ret) {
J
Jesse Brandeburg 已提交
9292
		dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
9293 9294
		set_bit(__I40E_RESET_FAILED, pf->state);
		clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
9295 9296
	} else {
		pf->pfr_count++;
9297
	}
9298 9299 9300 9301 9302 9303 9304 9305 9306 9307 9308 9309
	return ret;
}

/**
 * i40e_rebuild - rebuild using a saved config
 * @pf: board private structure
 * @reinit: if the Main VSI needs to re-initialized.
 * @lock_acquired: indicates whether or not the lock has been acquired
 * before this function was called.
 **/
static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
{
9310
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9311 9312 9313 9314 9315
	struct i40e_hw *hw = &pf->hw;
	u8 set_fc_aq_fail = 0;
	i40e_status ret;
	u32 val;
	int v;
J
Jesse Brandeburg 已提交
9316

9317
	if (test_bit(__I40E_DOWN, pf->state))
9318
		goto clear_recovery;
J
Jesse Brandeburg 已提交
9319
	dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
J
Jesse Brandeburg 已提交
9320 9321 9322 9323

	/* rebuild the basics for the AdminQ, HMC, and initial HW switch */
	ret = i40e_init_adminq(&pf->hw);
	if (ret) {
9324 9325 9326
		dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9327
		goto clear_recovery;
J
Jesse Brandeburg 已提交
9328
	}
9329
	i40e_get_oem_version(&pf->hw);
J
Jesse Brandeburg 已提交
9330

9331 9332 9333 9334 9335 9336 9337 9338 9339 9340 9341
	if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
	    ((hw->aq.fw_maj_ver == 4 && hw->aq.fw_min_ver <= 33) ||
	     hw->aq.fw_maj_ver < 4) && hw->mac.type == I40E_MAC_XL710) {
		/* The following delay is necessary for 4.33 firmware and older
		 * to recover after EMP reset. 200 ms should suffice but we
		 * put here 300 ms to be sure that FW is ready to operate
		 * after reset.
		 */
		mdelay(300);
	}

9342
	/* re-verify the eeprom if we just had an EMP reset */
9343
	if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state))
9344 9345
		i40e_verify_eeprom(pf);

9346
	i40e_clear_pxe_mode(hw);
9347
	ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
9348
	if (ret)
J
Jesse Brandeburg 已提交
9349 9350 9351
		goto end_core_reset;

	ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9352
				hw->func_caps.num_rx_qp, 0, 0);
J
Jesse Brandeburg 已提交
9353 9354 9355 9356 9357 9358 9359 9360 9361 9362
	if (ret) {
		dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
		goto end_core_reset;
	}
	ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
	if (ret) {
		dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
		goto end_core_reset;
	}

9363 9364 9365
	/* Enable FW to write a default DCB config on link-up */
	i40e_aq_set_dcb_parameters(hw, true, NULL);

N
Neerav Parikh 已提交
9366 9367 9368
#ifdef CONFIG_I40E_DCB
	ret = i40e_init_pf_dcb(pf);
	if (ret) {
9369 9370 9371
		dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
		pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
		/* Continue without DCB enabled */
N
Neerav Parikh 已提交
9372 9373
	}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
9374
	/* do basic switch setup */
9375 9376
	if (!lock_acquired)
		rtnl_lock();
9377
	ret = i40e_setup_pf_switch(pf, reinit);
J
Jesse Brandeburg 已提交
9378
	if (ret)
9379
		goto end_unlock;
J
Jesse Brandeburg 已提交
9380

S
Shannon Nelson 已提交
9381 9382
	/* The driver only wants link up/down and module qualification
	 * reports from firmware.  Note the negative logic.
J
Jesse Brandeburg 已提交
9383 9384
	 */
	ret = i40e_aq_set_phy_int_mask(&pf->hw,
S
Shannon Nelson 已提交
9385
				       ~(I40E_AQ_EVENT_LINK_UPDOWN |
9386
					 I40E_AQ_EVENT_MEDIA_NA |
S
Shannon Nelson 已提交
9387
					 I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
J
Jesse Brandeburg 已提交
9388
	if (ret)
9389 9390 9391
		dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
9392

9393 9394 9395
	/* make sure our flow control settings are restored */
	ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
	if (ret)
9396 9397 9398
		dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
			i40e_stat_str(&pf->hw, ret),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9399

J
Jesse Brandeburg 已提交
9400 9401 9402 9403 9404 9405 9406
	/* Rebuild the VSIs and VEBs that existed before reset.
	 * They are still in our local switch element arrays, so only
	 * need to rebuild the switch model in the HW.
	 *
	 * If there were VEBs but the reconstitution failed, we'll try
	 * try to recover minimal use by getting the basic PF VSI working.
	 */
9407
	if (vsi->uplink_seid != pf->mac_seid) {
J
Jesse Brandeburg 已提交
9408
		dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
J
Jesse Brandeburg 已提交
9409 9410 9411 9412 9413 9414 9415 9416 9417 9418 9419 9420 9421 9422 9423 9424 9425 9426 9427 9428 9429 9430
		/* find the one VEB connected to the MAC, and find orphans */
		for (v = 0; v < I40E_MAX_VEB; v++) {
			if (!pf->veb[v])
				continue;

			if (pf->veb[v]->uplink_seid == pf->mac_seid ||
			    pf->veb[v]->uplink_seid == 0) {
				ret = i40e_reconstitute_veb(pf->veb[v]);

				if (!ret)
					continue;

				/* If Main VEB failed, we're in deep doodoo,
				 * so give up rebuilding the switch and set up
				 * for minimal rebuild of PF VSI.
				 * If orphan failed, we'll report the error
				 * but try to keep going.
				 */
				if (pf->veb[v]->uplink_seid == pf->mac_seid) {
					dev_info(&pf->pdev->dev,
						 "rebuild of switch failed: %d, will try to set up simple PF connection\n",
						 ret);
9431
					vsi->uplink_seid = pf->mac_seid;
J
Jesse Brandeburg 已提交
9432 9433 9434 9435 9436 9437 9438 9439 9440 9441
					break;
				} else if (pf->veb[v]->uplink_seid == 0) {
					dev_info(&pf->pdev->dev,
						 "rebuild of orphan VEB failed: %d\n",
						 ret);
				}
			}
		}
	}

9442
	if (vsi->uplink_seid == pf->mac_seid) {
S
Shannon Nelson 已提交
9443
		dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
J
Jesse Brandeburg 已提交
9444
		/* no VEB, so rebuild only the Main VSI */
9445
		ret = i40e_add_vsi(vsi);
J
Jesse Brandeburg 已提交
9446 9447 9448
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "rebuild of Main VSI failed: %d\n", ret);
9449
			goto end_unlock;
J
Jesse Brandeburg 已提交
9450 9451 9452
		}
	}

9453
	if (vsi->mqprio_qopt.max_rate[0]) {
A
Alan Brady 已提交
9454 9455
		u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
		u64 credits = 0;
9456

A
Alan Brady 已提交
9457
		do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
9458
		ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
A
Alan Brady 已提交
9459
		if (ret)
9460
			goto end_unlock;
A
Alan Brady 已提交
9461 9462 9463 9464 9465 9466 9467 9468

		credits = max_tx_rate;
		do_div(credits, I40E_BW_CREDIT_DIVISOR);
		dev_dbg(&vsi->back->pdev->dev,
			"Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
			max_tx_rate,
			credits,
			vsi->seid);
9469 9470
	}

9471 9472 9473 9474
	ret = i40e_rebuild_cloud_filters(vsi, vsi->seid);
	if (ret)
		goto end_unlock;

9475 9476 9477
	/* PF Main VSI is rebuild by now, go ahead and rebuild channel VSIs
	 * for this main VSI if they exist
	 */
9478
	ret = i40e_rebuild_channels(vsi);
9479 9480 9481
	if (ret)
		goto end_unlock;

9482 9483 9484 9485 9486 9487 9488 9489 9490 9491 9492 9493 9494 9495
	/* Reconfigure hardware for allowing smaller MSS in the case
	 * of TSO, so that we avoid the MDD being fired and causing
	 * a reset in the case of small MSS+TSO.
	 */
#define I40E_REG_MSS          0x000E64DC
#define I40E_REG_MSS_MIN_MASK 0x3FF0000
#define I40E_64BYTE_MSS       0x400000
	val = rd32(hw, I40E_REG_MSS);
	if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
		val &= ~I40E_REG_MSS_MIN_MASK;
		val |= I40E_64BYTE_MSS;
		wr32(hw, I40E_REG_MSS, val);
	}

9496
	if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
9497 9498 9499
		msleep(75);
		ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
		if (ret)
9500 9501 9502 9503
			dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
9504
	}
J
Jesse Brandeburg 已提交
9505 9506 9507 9508
	/* reinit the misc interrupt */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		ret = i40e_setup_misc_vector(pf);

9509 9510 9511 9512 9513 9514 9515 9516 9517
	/* Add a filter to drop all Flow control frames from any VSI from being
	 * transmitted. By doing so we stop a malicious VF from sending out
	 * PAUSE or PFC frames and potentially controlling traffic for other
	 * PF/VF VSIs.
	 * The FW can still send Flow control frames if enabled.
	 */
	i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
						       pf->main_vsi_seid);

J
Jesse Brandeburg 已提交
9518 9519 9520
	/* restart the VSIs that were rebuilt and running before the reset */
	i40e_pf_unquiesce_all_vsi(pf);

9521 9522 9523 9524
	/* Release the RTNL lock before we start resetting VFs */
	if (!lock_acquired)
		rtnl_unlock();

A
Alan Brady 已提交
9525 9526 9527 9528 9529 9530 9531 9532 9533
	/* Restore promiscuous settings */
	ret = i40e_set_promiscuous(pf, pf->cur_promisc);
	if (ret)
		dev_warn(&pf->pdev->dev,
			 "Failed to restore promiscuous setting: %s, err %s aq_err %s\n",
			 pf->cur_promisc ? "on" : "off",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));

9534
	i40e_reset_all_vfs(pf, true);
M
Mitch Williams 已提交
9535

J
Jesse Brandeburg 已提交
9536
	/* tell the firmware that we're starting */
J
Jesse Brandeburg 已提交
9537
	i40e_send_version(pf);
J
Jesse Brandeburg 已提交
9538

9539 9540 9541
	/* We've already released the lock, so don't do it again */
	goto end_core_reset;

9542
end_unlock:
9543 9544
	if (!lock_acquired)
		rtnl_unlock();
J
Jesse Brandeburg 已提交
9545
end_core_reset:
9546
	clear_bit(__I40E_RESET_FAILED, pf->state);
9547
clear_recovery:
9548
	clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
J
Jesse Brandeburg 已提交
9549 9550
}

9551 9552 9553 9554 9555 9556 9557 9558 9559 9560 9561 9562 9563 9564 9565 9566 9567 9568 9569 9570
/**
 * i40e_reset_and_rebuild - reset and rebuild using a saved config
 * @pf: board private structure
 * @reinit: if the Main VSI needs to re-initialized.
 * @lock_acquired: indicates whether or not the lock has been acquired
 * before this function was called.
 **/
static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
				   bool lock_acquired)
{
	int ret;
	/* Now we wait for GRST to settle out.
	 * We don't have to delete the VEBs or VSIs from the hw switch
	 * because the reset will make them disappear.
	 */
	ret = i40e_reset(pf);
	if (!ret)
		i40e_rebuild(pf, reinit, lock_acquired);
}

A
Anjali Singhai Jain 已提交
9571
/**
9572
 * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
A
Anjali Singhai Jain 已提交
9573 9574 9575 9576
 * @pf: board private structure
 *
 * Close up the VFs and other things in prep for a Core Reset,
 * then get ready to rebuild the world.
9577 9578
 * @lock_acquired: indicates whether or not the lock has been acquired
 * before this function was called.
A
Anjali Singhai Jain 已提交
9579
 **/
9580
static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
A
Anjali Singhai Jain 已提交
9581
{
9582 9583
	i40e_prep_for_reset(pf, lock_acquired);
	i40e_reset_and_rebuild(pf, false, lock_acquired);
A
Anjali Singhai Jain 已提交
9584 9585
}

J
Jesse Brandeburg 已提交
9586 9587
/**
 * i40e_handle_mdd_event
9588
 * @pf: pointer to the PF structure
J
Jesse Brandeburg 已提交
9589 9590 9591 9592 9593 9594 9595
 *
 * Called from the MDD irq handler to identify possibly malicious vfs
 **/
static void i40e_handle_mdd_event(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	bool mdd_detected = false;
9596
	bool pf_mdd_detected = false;
J
Jesse Brandeburg 已提交
9597 9598 9599 9600
	struct i40e_vf *vf;
	u32 reg;
	int i;

9601
	if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
J
Jesse Brandeburg 已提交
9602 9603 9604 9605 9606
		return;

	/* find what triggered the MDD event */
	reg = rd32(hw, I40E_GL_MDET_TX);
	if (reg & I40E_GL_MDET_TX_VALID_MASK) {
9607 9608
		u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
				I40E_GL_MDET_TX_PF_NUM_SHIFT;
9609
		u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
9610
				I40E_GL_MDET_TX_VF_NUM_SHIFT;
9611
		u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
9612
				I40E_GL_MDET_TX_EVENT_SHIFT;
9613 9614 9615
		u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
				I40E_GL_MDET_TX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
9616
		if (netif_msg_tx_err(pf))
9617
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
9618
				 event, queue, pf_num, vf_num);
J
Jesse Brandeburg 已提交
9619 9620 9621 9622 9623
		wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
		mdd_detected = true;
	}
	reg = rd32(hw, I40E_GL_MDET_RX);
	if (reg & I40E_GL_MDET_RX_VALID_MASK) {
9624 9625
		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
				I40E_GL_MDET_RX_FUNCTION_SHIFT;
9626
		u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
9627
				I40E_GL_MDET_RX_EVENT_SHIFT;
9628 9629 9630
		u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
				I40E_GL_MDET_RX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
9631 9632 9633
		if (netif_msg_rx_err(pf))
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
				 event, queue, func);
J
Jesse Brandeburg 已提交
9634 9635 9636 9637
		wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
		mdd_detected = true;
	}

9638 9639 9640 9641
	if (mdd_detected) {
		reg = rd32(hw, I40E_PF_MDET_TX);
		if (reg & I40E_PF_MDET_TX_VALID_MASK) {
			wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
9642
			dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
9643 9644 9645 9646 9647
			pf_mdd_detected = true;
		}
		reg = rd32(hw, I40E_PF_MDET_RX);
		if (reg & I40E_PF_MDET_RX_VALID_MASK) {
			wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
9648
			dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
9649 9650 9651 9652
			pf_mdd_detected = true;
		}
		/* Queue belongs to the PF, initiate a reset */
		if (pf_mdd_detected) {
9653
			set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9654 9655 9656 9657
			i40e_service_event_schedule(pf);
		}
	}

J
Jesse Brandeburg 已提交
9658 9659 9660 9661 9662 9663 9664
	/* see if one of the VFs needs its hand slapped */
	for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
		vf = &(pf->vf[i]);
		reg = rd32(hw, I40E_VP_MDET_TX(i));
		if (reg & I40E_VP_MDET_TX_VALID_MASK) {
			wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
			vf->num_mdd_events++;
9665 9666
			dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
9667 9668 9669 9670 9671 9672
		}

		reg = rd32(hw, I40E_VP_MDET_RX(i));
		if (reg & I40E_VP_MDET_RX_VALID_MASK) {
			wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
			vf->num_mdd_events++;
9673 9674
			dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
9675 9676 9677 9678 9679 9680 9681
		}

		if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
			dev_info(&pf->pdev->dev,
				 "Too many MDD events on VF %d, disabled\n", i);
			dev_info(&pf->pdev->dev,
				 "Use PF Control I/F to re-enable the VF\n");
9682
			set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
J
Jesse Brandeburg 已提交
9683 9684 9685 9686
		}
	}

	/* re-enable mdd interrupt cause */
9687
	clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
J
Jesse Brandeburg 已提交
9688 9689 9690 9691 9692 9693
	reg = rd32(hw, I40E_PFINT_ICR0_ENA);
	reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, reg);
	i40e_flush(hw);
}

9694 9695 9696 9697 9698 9699 9700 9701 9702 9703 9704 9705
static const char *i40e_tunnel_name(struct i40e_udp_port_config *port)
{
	switch (port->type) {
	case UDP_TUNNEL_TYPE_VXLAN:
		return "vxlan";
	case UDP_TUNNEL_TYPE_GENEVE:
		return "geneve";
	default:
		return "unknown";
	}
}

9706 9707 9708 9709 9710 9711 9712 9713 9714 9715 9716 9717 9718 9719
/**
 * i40e_sync_udp_filters - Trigger a sync event for existing UDP filters
 * @pf: board private structure
 **/
static void i40e_sync_udp_filters(struct i40e_pf *pf)
{
	int i;

	/* loop through and set pending bit for all active UDP filters */
	for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
		if (pf->udp_ports[i].port)
			pf->pending_udp_bitmap |= BIT_ULL(i);
	}

9720
	set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
9721 9722
}

9723
/**
9724
 * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
9725 9726
 * @pf: board private structure
 **/
9727
static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
9728 9729 9730
{
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;
9731
	u16 port;
9732 9733
	int i;

9734
	if (!test_and_clear_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state))
9735 9736 9737
		return;

	for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
9738 9739
		if (pf->pending_udp_bitmap & BIT_ULL(i)) {
			pf->pending_udp_bitmap &= ~BIT_ULL(i);
9740
			port = pf->udp_ports[i].port;
S
Shannon Nelson 已提交
9741
			if (port)
9742 9743 9744
				ret = i40e_aq_add_udp_tunnel(hw, port,
							pf->udp_ports[i].type,
							NULL, NULL);
S
Shannon Nelson 已提交
9745 9746
			else
				ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
9747 9748

			if (ret) {
9749 9750 9751 9752 9753 9754 9755 9756
				dev_info(&pf->pdev->dev,
					 "%s %s port %d, index %d failed, err %s aq_err %s\n",
					 i40e_tunnel_name(&pf->udp_ports[i]),
					 port ? "add" : "delete",
					 port, i,
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						     pf->hw.aq.asq_last_status));
9757
				pf->udp_ports[i].port = 0;
9758 9759 9760 9761 9762
			}
		}
	}
}

J
Jesse Brandeburg 已提交
9763 9764 9765 9766 9767 9768 9769 9770 9771 9772 9773
/**
 * i40e_service_task - Run the driver's async subtasks
 * @work: pointer to work_struct containing our data
 **/
static void i40e_service_task(struct work_struct *work)
{
	struct i40e_pf *pf = container_of(work,
					  struct i40e_pf,
					  service_task);
	unsigned long start_time = jiffies;

9774
	/* don't bother with service tasks if a reset is in progress */
9775
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
9776 9777
		return;

9778
	if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
M
Mitch Williams 已提交
9779 9780
		return;

9781
	i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
9782
	i40e_sync_filters_subtask(pf);
J
Jesse Brandeburg 已提交
9783 9784 9785 9786 9787
	i40e_reset_subtask(pf);
	i40e_handle_mdd_event(pf);
	i40e_vc_process_vflr_event(pf);
	i40e_watchdog_subtask(pf);
	i40e_fdir_reinit_subtask(pf);
9788
	if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
M
Mitch Williams 已提交
9789 9790 9791 9792
		/* Client subtask will reopen next time through. */
		i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], true);
	} else {
		i40e_client_subtask(pf);
9793 9794
		if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
				       pf->state))
M
Mitch Williams 已提交
9795 9796 9797
			i40e_notify_client_of_l2_param_changes(
							pf->vsi[pf->lan_vsi]);
	}
J
Jesse Brandeburg 已提交
9798
	i40e_sync_filters_subtask(pf);
9799
	i40e_sync_udp_filters_subtask(pf);
J
Jesse Brandeburg 已提交
9800 9801
	i40e_clean_adminq_subtask(pf);

M
Mitch Williams 已提交
9802 9803
	/* flush memory to make sure state is correct before next watchdog */
	smp_mb__before_atomic();
9804
	clear_bit(__I40E_SERVICE_SCHED, pf->state);
J
Jesse Brandeburg 已提交
9805 9806 9807 9808 9809 9810

	/* If the tasks have taken longer than one timer cycle or there
	 * is more work to be done, reschedule the service task now
	 * rather than wait for the timer to tick again.
	 */
	if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
9811 9812 9813
	    test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)		 ||
	    test_bit(__I40E_MDD_EVENT_PENDING, pf->state)		 ||
	    test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
J
Jesse Brandeburg 已提交
9814 9815 9816 9817 9818 9819 9820
		i40e_service_event_schedule(pf);
}

/**
 * i40e_service_timer - timer callback
 * @data: pointer to PF struct
 **/
9821
static void i40e_service_timer(struct timer_list *t)
J
Jesse Brandeburg 已提交
9822
{
9823
	struct i40e_pf *pf = from_timer(pf, t, service_timer);
J
Jesse Brandeburg 已提交
9824 9825 9826 9827 9828 9829 9830 9831 9832 9833 9834 9835 9836 9837 9838 9839 9840 9841 9842 9843 9844 9845 9846 9847 9848 9849 9850 9851 9852 9853

	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));
	i40e_service_event_schedule(pf);
}

/**
 * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
 * @vsi: the VSI being configured
 **/
static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
		vsi->alloc_queue_pairs = pf->num_lan_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			vsi->num_q_vectors = pf->num_lan_msix;
		else
			vsi->num_q_vectors = 1;

		break;

	case I40E_VSI_FDIR:
		vsi->alloc_queue_pairs = 1;
		vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
9854
		vsi->num_q_vectors = pf->num_fdsb_msix;
J
Jesse Brandeburg 已提交
9855 9856 9857 9858 9859 9860 9861 9862 9863 9864 9865 9866 9867 9868 9869 9870 9871 9872 9873 9874 9875 9876 9877
		break;

	case I40E_VSI_VMDQ2:
		vsi->alloc_queue_pairs = pf->num_vmdq_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_q_vectors = pf->num_vmdq_msix;
		break;

	case I40E_VSI_SRIOV:
		vsi->alloc_queue_pairs = pf->num_vf_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		break;

	default:
		WARN_ON(1);
		return -ENODATA;
	}

	return 0;
}

A
Anjali Singhai Jain 已提交
9878 9879
/**
 * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
R
Rami Rosen 已提交
9880
 * @vsi: VSI pointer
9881
 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
A
Anjali Singhai Jain 已提交
9882 9883 9884 9885
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
9886
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
A
Anjali Singhai Jain 已提交
9887
{
9888
	struct i40e_ring **next_rings;
A
Anjali Singhai Jain 已提交
9889 9890 9891
	int size;
	int ret = 0;

9892 9893 9894
	/* allocate memory for both Tx, XDP Tx and Rx ring pointers */
	size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
	       (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
A
Anjali Singhai Jain 已提交
9895 9896 9897
	vsi->tx_rings = kzalloc(size, GFP_KERNEL);
	if (!vsi->tx_rings)
		return -ENOMEM;
9898 9899 9900 9901 9902 9903
	next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
	if (i40e_enabled_xdp_vsi(vsi)) {
		vsi->xdp_rings = next_rings;
		next_rings += vsi->alloc_queue_pairs;
	}
	vsi->rx_rings = next_rings;
A
Anjali Singhai Jain 已提交
9904

9905 9906
	if (alloc_qvectors) {
		/* allocate memory for q_vector pointers */
9907
		size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
9908 9909 9910 9911 9912
		vsi->q_vectors = kzalloc(size, GFP_KERNEL);
		if (!vsi->q_vectors) {
			ret = -ENOMEM;
			goto err_vectors;
		}
A
Anjali Singhai Jain 已提交
9913 9914 9915 9916 9917 9918 9919 9920
	}
	return ret;

err_vectors:
	kfree(vsi->tx_rings);
	return ret;
}

J
Jesse Brandeburg 已提交
9921 9922 9923 9924 9925 9926 9927 9928 9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945
/**
 * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
 * @pf: board private structure
 * @type: type of VSI
 *
 * On error: returns error code (negative)
 * On success: returns vsi index in PF (positive)
 **/
static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
{
	int ret = -ENODEV;
	struct i40e_vsi *vsi;
	int vsi_idx;
	int i;

	/* Need to protect the allocation of the VSIs at the PF level */
	mutex_lock(&pf->switch_mutex);

	/* VSI list may be fragmented if VSI creation/destruction has
	 * been happening.  We can afford to do a quick scan to look
	 * for any free VSIs in the list.
	 *
	 * find next empty vsi slot, looping back around if necessary
	 */
	i = pf->next_vsi;
M
Mitch Williams 已提交
9946
	while (i < pf->num_alloc_vsi && pf->vsi[i])
J
Jesse Brandeburg 已提交
9947
		i++;
M
Mitch Williams 已提交
9948
	if (i >= pf->num_alloc_vsi) {
J
Jesse Brandeburg 已提交
9949 9950 9951 9952 9953
		i = 0;
		while (i < pf->next_vsi && pf->vsi[i])
			i++;
	}

M
Mitch Williams 已提交
9954
	if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
J
Jesse Brandeburg 已提交
9955 9956 9957
		vsi_idx = i;             /* Found one! */
	} else {
		ret = -ENODEV;
9958
		goto unlock_pf;  /* out of VSI slots! */
J
Jesse Brandeburg 已提交
9959 9960 9961 9962 9963 9964
	}
	pf->next_vsi = ++i;

	vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
	if (!vsi) {
		ret = -ENOMEM;
9965
		goto unlock_pf;
J
Jesse Brandeburg 已提交
9966 9967 9968
	}
	vsi->type = type;
	vsi->back = pf;
9969
	set_bit(__I40E_VSI_DOWN, vsi->state);
J
Jesse Brandeburg 已提交
9970 9971
	vsi->flags = 0;
	vsi->idx = vsi_idx;
9972
	vsi->int_rate_limit = 0;
9973 9974
	vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
				pf->rss_table_size : 64;
J
Jesse Brandeburg 已提交
9975 9976
	vsi->netdev_registered = false;
	vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
9977
	hash_init(vsi->mac_filter_hash);
9978
	vsi->irqs_ready = false;
J
Jesse Brandeburg 已提交
9979

9980 9981 9982 9983
	ret = i40e_set_num_rings_in_vsi(vsi);
	if (ret)
		goto err_rings;

9984
	ret = i40e_vsi_alloc_arrays(vsi, true);
A
Anjali Singhai Jain 已提交
9985
	if (ret)
9986
		goto err_rings;
9987

J
Jesse Brandeburg 已提交
9988 9989 9990
	/* Setup default MSIX irq handler for VSI */
	i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);

K
Kiran Patil 已提交
9991
	/* Initialize VSI lock */
9992
	spin_lock_init(&vsi->mac_filter_hash_lock);
J
Jesse Brandeburg 已提交
9993 9994
	pf->vsi[vsi_idx] = vsi;
	ret = vsi_idx;
9995 9996
	goto unlock_pf;

9997
err_rings:
9998 9999 10000
	pf->next_vsi = i - 1;
	kfree(vsi);
unlock_pf:
J
Jesse Brandeburg 已提交
10001 10002 10003 10004
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

A
Anjali Singhai Jain 已提交
10005 10006 10007
/**
 * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
 * @type: VSI pointer
10008
 * @free_qvectors: a bool to specify if q_vectors need to be freed.
A
Anjali Singhai Jain 已提交
10009 10010 10011 10012
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
10013
static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
A
Anjali Singhai Jain 已提交
10014 10015
{
	/* free the ring and vector containers */
10016 10017 10018 10019
	if (free_qvectors) {
		kfree(vsi->q_vectors);
		vsi->q_vectors = NULL;
	}
A
Anjali Singhai Jain 已提交
10020 10021 10022
	kfree(vsi->tx_rings);
	vsi->tx_rings = NULL;
	vsi->rx_rings = NULL;
10023
	vsi->xdp_rings = NULL;
A
Anjali Singhai Jain 已提交
10024 10025
}

10026 10027 10028 10029 10030 10031 10032 10033 10034 10035 10036 10037 10038 10039 10040 10041 10042
/**
 * i40e_clear_rss_config_user - clear the user configured RSS hash keys
 * and lookup table
 * @vsi: Pointer to VSI structure
 */
static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
{
	if (!vsi)
		return;

	kfree(vsi->rss_hkey_user);
	vsi->rss_hkey_user = NULL;

	kfree(vsi->rss_lut_user);
	vsi->rss_lut_user = NULL;
}

J
Jesse Brandeburg 已提交
10043 10044 10045 10046 10047 10048 10049 10050 10051 10052 10053 10054 10055 10056 10057 10058 10059
/**
 * i40e_vsi_clear - Deallocate the VSI provided
 * @vsi: the VSI being un-configured
 **/
static int i40e_vsi_clear(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf;

	if (!vsi)
		return 0;

	if (!vsi->back)
		goto free_vsi;
	pf = vsi->back;

	mutex_lock(&pf->switch_mutex);
	if (!pf->vsi[vsi->idx]) {
10060 10061
		dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](type %d)\n",
			vsi->idx, vsi->idx, vsi->type);
J
Jesse Brandeburg 已提交
10062 10063 10064 10065 10066
		goto unlock_vsi;
	}

	if (pf->vsi[vsi->idx] != vsi) {
		dev_err(&pf->pdev->dev,
10067
			"pf->vsi[%d](type %d) != vsi[%d](type %d): no free!\n",
J
Jesse Brandeburg 已提交
10068 10069
			pf->vsi[vsi->idx]->idx,
			pf->vsi[vsi->idx]->type,
10070
			vsi->idx, vsi->type);
J
Jesse Brandeburg 已提交
10071 10072 10073
		goto unlock_vsi;
	}

10074
	/* updates the PF for this cleared vsi */
J
Jesse Brandeburg 已提交
10075 10076 10077
	i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
	i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);

10078
	i40e_vsi_free_arrays(vsi, true);
10079
	i40e_clear_rss_config_user(vsi);
10080

J
Jesse Brandeburg 已提交
10081 10082 10083 10084 10085 10086 10087 10088 10089 10090 10091 10092
	pf->vsi[vsi->idx] = NULL;
	if (vsi->idx < pf->next_vsi)
		pf->next_vsi = vsi->idx;

unlock_vsi:
	mutex_unlock(&pf->switch_mutex);
free_vsi:
	kfree(vsi);

	return 0;
}

10093 10094 10095 10096
/**
 * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
 * @vsi: the VSI being cleaned
 **/
10097
static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
10098 10099 10100
{
	int i;

10101
	if (vsi->tx_rings && vsi->tx_rings[0]) {
N
Neerav Parikh 已提交
10102
		for (i = 0; i < vsi->alloc_queue_pairs; i++) {
10103 10104 10105
			kfree_rcu(vsi->tx_rings[i], rcu);
			vsi->tx_rings[i] = NULL;
			vsi->rx_rings[i] = NULL;
10106 10107
			if (vsi->xdp_rings)
				vsi->xdp_rings[i] = NULL;
10108
		}
10109
	}
10110 10111
}

J
Jesse Brandeburg 已提交
10112 10113 10114 10115 10116 10117
/**
 * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
 * @vsi: the VSI being configured
 **/
static int i40e_alloc_rings(struct i40e_vsi *vsi)
{
10118
	int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
J
Jesse Brandeburg 已提交
10119
	struct i40e_pf *pf = vsi->back;
10120
	struct i40e_ring *ring;
J
Jesse Brandeburg 已提交
10121 10122

	/* Set basic values in the rings to be used later during open() */
N
Neerav Parikh 已提交
10123
	for (i = 0; i < vsi->alloc_queue_pairs; i++) {
10124
		/* allocate space for both Tx and Rx in one shot */
10125 10126
		ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
		if (!ring)
10127
			goto err_out;
J
Jesse Brandeburg 已提交
10128

10129 10130 10131 10132 10133 10134 10135 10136 10137
		ring->queue_index = i;
		ring->reg_idx = vsi->base_queue + i;
		ring->ring_active = false;
		ring->vsi = vsi;
		ring->netdev = vsi->netdev;
		ring->dev = &pf->pdev->dev;
		ring->count = vsi->num_desc;
		ring->size = 0;
		ring->dcb_tc = 0;
10138
		if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
10139
			ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
10140
		ring->itr_setting = pf->tx_itr_default;
10141 10142 10143 10144 10145 10146 10147 10148 10149 10150 10151 10152 10153 10154
		vsi->tx_rings[i] = ring++;

		if (!i40e_enabled_xdp_vsi(vsi))
			goto setup_rx;

		ring->queue_index = vsi->alloc_queue_pairs + i;
		ring->reg_idx = vsi->base_queue + ring->queue_index;
		ring->ring_active = false;
		ring->vsi = vsi;
		ring->netdev = NULL;
		ring->dev = &pf->pdev->dev;
		ring->count = vsi->num_desc;
		ring->size = 0;
		ring->dcb_tc = 0;
10155
		if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
10156 10157
			ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
		set_ring_xdp(ring);
10158
		ring->itr_setting = pf->tx_itr_default;
10159 10160 10161 10162 10163 10164 10165 10166 10167 10168 10169 10170
		vsi->xdp_rings[i] = ring++;

setup_rx:
		ring->queue_index = i;
		ring->reg_idx = vsi->base_queue + i;
		ring->ring_active = false;
		ring->vsi = vsi;
		ring->netdev = vsi->netdev;
		ring->dev = &pf->pdev->dev;
		ring->count = vsi->num_desc;
		ring->size = 0;
		ring->dcb_tc = 0;
10171
		ring->itr_setting = pf->rx_itr_default;
10172
		vsi->rx_rings[i] = ring;
J
Jesse Brandeburg 已提交
10173 10174 10175
	}

	return 0;
10176 10177 10178 10179

err_out:
	i40e_vsi_clear_rings(vsi);
	return -ENOMEM;
J
Jesse Brandeburg 已提交
10180 10181 10182 10183 10184 10185 10186 10187 10188 10189 10190
}

/**
 * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
 * @pf: board private structure
 * @vectors: the number of MSI-X vectors to request
 *
 * Returns the number of vectors reserved, or error
 **/
static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
{
10191 10192 10193
	vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
					I40E_MIN_MSIX, vectors);
	if (vectors < 0) {
J
Jesse Brandeburg 已提交
10194
		dev_info(&pf->pdev->dev,
10195
			 "MSI-X vector reservation failed: %d\n", vectors);
J
Jesse Brandeburg 已提交
10196 10197 10198 10199 10200 10201 10202 10203 10204 10205 10206 10207
		vectors = 0;
	}

	return vectors;
}

/**
 * i40e_init_msix - Setup the MSIX capability
 * @pf: board private structure
 *
 * Work with the OS to set up the MSIX vectors needed.
 *
10208
 * Returns the number of vectors reserved or negative on failure
J
Jesse Brandeburg 已提交
10209 10210 10211 10212
 **/
static int i40e_init_msix(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
10213
	int cpus, extra_vectors;
S
Shannon Nelson 已提交
10214
	int vectors_left;
J
Jesse Brandeburg 已提交
10215
	int v_budget, i;
10216
	int v_actual;
10217
	int iwarp_requested = 0;
J
Jesse Brandeburg 已提交
10218 10219 10220 10221 10222 10223 10224

	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
		return -ENODEV;

	/* The number of vectors we'll request will be comprised of:
	 *   - Add 1 for "other" cause for Admin Queue events, etc.
	 *   - The number of LAN queue pairs
10225 10226 10227 10228 10229
	 *	- Queues being used for RSS.
	 *		We don't need as many as max_rss_size vectors.
	 *		use rss_size instead in the calculation since that
	 *		is governed by number of cpus in the system.
	 *	- assumes symmetric Tx/Rx pairing
J
Jesse Brandeburg 已提交
10230
	 *   - The number of VMDq pairs
10231
	 *   - The CPU count within the NUMA node if iWARP is enabled
J
Jesse Brandeburg 已提交
10232 10233 10234 10235 10236
	 * Once we count this up, try the request.
	 *
	 * If we can't get what we want, we'll simplify to nearly nothing
	 * and try again.  If that still fails, we punt.
	 */
S
Shannon Nelson 已提交
10237 10238 10239 10240 10241 10242 10243 10244 10245
	vectors_left = hw->func_caps.num_msix_vectors;
	v_budget = 0;

	/* reserve one vector for miscellaneous handler */
	if (vectors_left) {
		v_budget++;
		vectors_left--;
	}

10246 10247 10248 10249 10250 10251 10252 10253 10254
	/* reserve some vectors for the main PF traffic queues. Initially we
	 * only reserve at most 50% of the available vectors, in the case that
	 * the number of online CPUs is large. This ensures that we can enable
	 * extra features as well. Once we've enabled the other features, we
	 * will use any remaining vectors to reach as close as we can to the
	 * number of online CPUs.
	 */
	cpus = num_online_cpus();
	pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
S
Shannon Nelson 已提交
10255 10256 10257 10258 10259
	vectors_left -= pf->num_lan_msix;

	/* reserve one vector for sideband flow director */
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		if (vectors_left) {
10260
			pf->num_fdsb_msix = 1;
S
Shannon Nelson 已提交
10261 10262 10263
			v_budget++;
			vectors_left--;
		} else {
10264
			pf->num_fdsb_msix = 0;
S
Shannon Nelson 已提交
10265 10266
		}
	}
10267

10268 10269
	/* can we reserve enough for iWARP? */
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
10270 10271
		iwarp_requested = pf->num_iwarp_msix;

10272 10273 10274 10275 10276 10277 10278 10279
		if (!vectors_left)
			pf->num_iwarp_msix = 0;
		else if (vectors_left < pf->num_iwarp_msix)
			pf->num_iwarp_msix = 1;
		v_budget += pf->num_iwarp_msix;
		vectors_left -= pf->num_iwarp_msix;
	}

S
Shannon Nelson 已提交
10280 10281 10282 10283 10284
	/* any vectors left over go for VMDq support */
	if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
		int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
		int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);

10285 10286 10287 10288 10289 10290 10291 10292 10293 10294 10295 10296 10297
		if (!vectors_left) {
			pf->num_vmdq_msix = 0;
			pf->num_vmdq_qps = 0;
		} else {
			/* if we're short on vectors for what's desired, we limit
			 * the queues per vmdq.  If this is still more than are
			 * available, the user will need to change the number of
			 * queues/vectors used by the PF later with the ethtool
			 * channels command
			 */
			if (vmdq_vecs < vmdq_vecs_wanted)
				pf->num_vmdq_qps = 1;
			pf->num_vmdq_msix = pf->num_vmdq_qps;
S
Shannon Nelson 已提交
10298

10299 10300 10301
			v_budget += vmdq_vecs;
			vectors_left -= vmdq_vecs;
		}
S
Shannon Nelson 已提交
10302
	}
J
Jesse Brandeburg 已提交
10303

10304 10305 10306 10307 10308 10309 10310 10311 10312 10313 10314 10315 10316 10317 10318 10319 10320
	/* On systems with a large number of SMP cores, we previously limited
	 * the number of vectors for num_lan_msix to be at most 50% of the
	 * available vectors, to allow for other features. Now, we add back
	 * the remaining vectors. However, we ensure that the total
	 * num_lan_msix will not exceed num_online_cpus(). To do this, we
	 * calculate the number of vectors we can add without going over the
	 * cap of CPUs. For systems with a small number of CPUs this will be
	 * zero.
	 */
	extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
	pf->num_lan_msix += extra_vectors;
	vectors_left -= extra_vectors;

	WARN(vectors_left < 0,
	     "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");

	v_budget += pf->num_lan_msix;
J
Jesse Brandeburg 已提交
10321 10322 10323 10324 10325 10326 10327
	pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
				   GFP_KERNEL);
	if (!pf->msix_entries)
		return -ENOMEM;

	for (i = 0; i < v_budget; i++)
		pf->msix_entries[i].entry = i;
10328
	v_actual = i40e_reserve_msix_vectors(pf, v_budget);
10329

10330
	if (v_actual < I40E_MIN_MSIX) {
J
Jesse Brandeburg 已提交
10331 10332 10333
		pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
10334
		pci_disable_msix(pf->pdev);
J
Jesse Brandeburg 已提交
10335 10336
		return -ENODEV;

10337
	} else if (v_actual == I40E_MIN_MSIX) {
J
Jesse Brandeburg 已提交
10338 10339 10340 10341 10342 10343
		/* Adjust for minimal MSIX use */
		pf->num_vmdq_vsis = 0;
		pf->num_vmdq_qps = 0;
		pf->num_lan_qps = 1;
		pf->num_lan_msix = 1;

10344
	} else if (v_actual != v_budget) {
10345 10346 10347 10348 10349
		/* If we have limited resources, we will start with no vectors
		 * for the special features and then allocate vectors to some
		 * of these features based on the policy and at the end disable
		 * the features that did not get any vectors.
		 */
10350 10351
		int vec;

10352
		dev_info(&pf->pdev->dev,
10353 10354
			 "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
			 v_actual, v_budget);
10355
		/* reserve the misc vector */
10356
		vec = v_actual - 1;
10357

J
Jesse Brandeburg 已提交
10358 10359
		/* Scale vector usage down */
		pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
10360
		pf->num_vmdq_vsis = 1;
S
Shannon Nelson 已提交
10361
		pf->num_vmdq_qps = 1;
J
Jesse Brandeburg 已提交
10362 10363 10364 10365 10366 10367 10368

		/* partition out the remaining vectors */
		switch (vec) {
		case 2:
			pf->num_lan_msix = 1;
			break;
		case 3:
10369 10370 10371 10372 10373 10374
			if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
				pf->num_lan_msix = 1;
				pf->num_iwarp_msix = 1;
			} else {
				pf->num_lan_msix = 2;
			}
J
Jesse Brandeburg 已提交
10375 10376
			break;
		default:
10377 10378 10379 10380 10381 10382 10383 10384 10385
			if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
				pf->num_iwarp_msix = min_t(int, (vec / 3),
						 iwarp_requested);
				pf->num_vmdq_vsis = min_t(int, (vec / 3),
						  I40E_DEFAULT_NUM_VMDQ_VSI);
			} else {
				pf->num_vmdq_vsis = min_t(int, (vec / 2),
						  I40E_DEFAULT_NUM_VMDQ_VSI);
			}
10386 10387 10388 10389
			if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
				pf->num_fdsb_msix = 1;
				vec--;
			}
10390 10391 10392
			pf->num_lan_msix = min_t(int,
			       (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
							      pf->num_lan_msix);
10393
			pf->num_lan_qps = pf->num_lan_msix;
J
Jesse Brandeburg 已提交
10394 10395 10396 10397
			break;
		}
	}

10398 10399 10400 10401
	if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
	    (pf->num_fdsb_msix == 0)) {
		dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10402
		pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
10403
	}
10404 10405 10406 10407 10408
	if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
	    (pf->num_vmdq_msix == 0)) {
		dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
	}
10409 10410 10411 10412 10413 10414

	if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
	    (pf->num_iwarp_msix == 0)) {
		dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
	}
10415 10416 10417 10418 10419 10420 10421
	i40e_debug(&pf->hw, I40E_DEBUG_INIT,
		   "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
		   pf->num_lan_msix,
		   pf->num_vmdq_msix * pf->num_vmdq_vsis,
		   pf->num_fdsb_msix,
		   pf->num_iwarp_msix);

10422
	return v_actual;
J
Jesse Brandeburg 已提交
10423 10424
}

10425
/**
10426
 * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
10427 10428
 * @vsi: the VSI being configured
 * @v_idx: index of the vector in the vsi struct
10429
 * @cpu: cpu to be used on affinity_mask
10430 10431 10432
 *
 * We allocate one q_vector.  If allocation fails we return -ENOMEM.
 **/
10433
static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
10434 10435 10436 10437 10438 10439 10440 10441 10442 10443
{
	struct i40e_q_vector *q_vector;

	/* allocate q_vector */
	q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
	if (!q_vector)
		return -ENOMEM;

	q_vector->vsi = vsi;
	q_vector->v_idx = v_idx;
10444
	cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
10445

10446 10447
	if (vsi->netdev)
		netif_napi_add(vsi->netdev, &q_vector->napi,
J
Jesse Brandeburg 已提交
10448
			       i40e_napi_poll, NAPI_POLL_WEIGHT);
10449 10450 10451 10452 10453 10454 10455

	/* tie q_vector and vsi together */
	vsi->q_vectors[v_idx] = q_vector;

	return 0;
}

J
Jesse Brandeburg 已提交
10456
/**
10457
 * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
J
Jesse Brandeburg 已提交
10458 10459 10460 10461 10462
 * @vsi: the VSI being configured
 *
 * We allocate one q_vector per queue interrupt.  If allocation fails we
 * return -ENOMEM.
 **/
10463
static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
10464 10465
{
	struct i40e_pf *pf = vsi->back;
10466
	int err, v_idx, num_q_vectors, current_cpu;
J
Jesse Brandeburg 已提交
10467 10468 10469 10470 10471 10472 10473 10474 10475

	/* if not MSIX, give the one vector only to the LAN VSI */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		num_q_vectors = vsi->num_q_vectors;
	else if (vsi == pf->vsi[pf->lan_vsi])
		num_q_vectors = 1;
	else
		return -EINVAL;

10476 10477
	current_cpu = cpumask_first(cpu_online_mask);

J
Jesse Brandeburg 已提交
10478
	for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
10479
		err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
10480 10481
		if (err)
			goto err_out;
10482 10483 10484
		current_cpu = cpumask_next(current_cpu, cpu_online_mask);
		if (unlikely(current_cpu >= nr_cpu_ids))
			current_cpu = cpumask_first(cpu_online_mask);
J
Jesse Brandeburg 已提交
10485 10486 10487
	}

	return 0;
10488 10489 10490 10491 10492 10493

err_out:
	while (v_idx--)
		i40e_free_q_vector(vsi, v_idx);

	return err;
J
Jesse Brandeburg 已提交
10494 10495 10496 10497 10498 10499
}

/**
 * i40e_init_interrupt_scheme - Determine proper interrupt scheme
 * @pf: board private structure to initialize
 **/
10500
static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
10501
{
10502 10503
	int vectors = 0;
	ssize_t size;
J
Jesse Brandeburg 已提交
10504 10505

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10506 10507
		vectors = i40e_init_msix(pf);
		if (vectors < 0) {
J
Jesse Brandeburg 已提交
10508
			pf->flags &= ~(I40E_FLAG_MSIX_ENABLED	|
10509
				       I40E_FLAG_IWARP_ENABLED	|
J
Jesse Brandeburg 已提交
10510
				       I40E_FLAG_RSS_ENABLED	|
10511
				       I40E_FLAG_DCB_CAPABLE	|
10512
				       I40E_FLAG_DCB_ENABLED	|
J
Jesse Brandeburg 已提交
10513 10514 10515 10516
				       I40E_FLAG_SRIOV_ENABLED	|
				       I40E_FLAG_FD_SB_ENABLED	|
				       I40E_FLAG_FD_ATR_ENABLED	|
				       I40E_FLAG_VMDQ_ENABLED);
10517
			pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
J
Jesse Brandeburg 已提交
10518 10519 10520 10521 10522 10523 10524 10525

			/* rework the queue expectations without MSIX */
			i40e_determine_queue_usage(pf);
		}
	}

	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    (pf->flags & I40E_FLAG_MSI_ENABLED)) {
C
Catherine Sullivan 已提交
10526
		dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
10527 10528 10529 10530
		vectors = pci_enable_msi(pf->pdev);
		if (vectors < 0) {
			dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
				 vectors);
J
Jesse Brandeburg 已提交
10531 10532
			pf->flags &= ~I40E_FLAG_MSI_ENABLED;
		}
10533
		vectors = 1;  /* one MSI or Legacy vector */
J
Jesse Brandeburg 已提交
10534 10535
	}

10536
	if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
C
Catherine Sullivan 已提交
10537
		dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
10538

10539 10540 10541
	/* set up vector assignment tracking */
	size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
	pf->irq_pile = kzalloc(size, GFP_KERNEL);
10542
	if (!pf->irq_pile)
10543
		return -ENOMEM;
10544

10545 10546 10547
	pf->irq_pile->num_entries = vectors;
	pf->irq_pile->search_hint = 0;

10548
	/* track first vector for misc interrupts, ignore return */
10549
	(void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
10550 10551

	return 0;
J
Jesse Brandeburg 已提交
10552 10553
}

10554 10555 10556 10557 10558 10559 10560 10561 10562 10563 10564 10565 10566 10567 10568 10569 10570 10571 10572 10573 10574 10575 10576 10577 10578 10579 10580 10581 10582 10583 10584 10585 10586 10587 10588 10589 10590 10591
/**
 * i40e_restore_interrupt_scheme - Restore the interrupt scheme
 * @pf: private board data structure
 *
 * Restore the interrupt scheme that was cleared when we suspended the
 * device. This should be called during resume to re-allocate the q_vectors
 * and reacquire IRQs.
 */
static int i40e_restore_interrupt_scheme(struct i40e_pf *pf)
{
	int err, i;

	/* We cleared the MSI and MSI-X flags when disabling the old interrupt
	 * scheme. We need to re-enabled them here in order to attempt to
	 * re-acquire the MSI or MSI-X vectors
	 */
	pf->flags |= (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);

	err = i40e_init_interrupt_scheme(pf);
	if (err)
		return err;

	/* Now that we've re-acquired IRQs, we need to remap the vectors and
	 * rings together again.
	 */
	for (i = 0; i < pf->num_alloc_vsi; i++) {
		if (pf->vsi[i]) {
			err = i40e_vsi_alloc_q_vectors(pf->vsi[i]);
			if (err)
				goto err_unwind;
			i40e_vsi_map_rings_to_vectors(pf->vsi[i]);
		}
	}

	err = i40e_setup_misc_vector(pf);
	if (err)
		goto err_unwind;

10592 10593 10594
	if (pf->flags & I40E_FLAG_IWARP_ENABLED)
		i40e_client_update_msix_info(pf);

10595 10596 10597 10598 10599 10600 10601 10602 10603 10604 10605
	return 0;

err_unwind:
	while (i--) {
		if (pf->vsi[i])
			i40e_vsi_free_q_vectors(pf->vsi[i]);
	}

	return err;
}

J
Jesse Brandeburg 已提交
10606 10607 10608 10609 10610 10611 10612 10613 10614 10615 10616 10617 10618
/**
 * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
 * @pf: board private structure
 *
 * This sets up the handler for MSIX 0, which is used to manage the
 * non-queue interrupts, e.g. AdminQ and errors.  This is not used
 * when in MSI or Legacy interrupt mode.
 **/
static int i40e_setup_misc_vector(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int err = 0;

10619 10620
	/* Only request the IRQ once, the first time through. */
	if (!test_and_set_bit(__I40E_MISC_IRQ_REQUESTED, pf->state)) {
J
Jesse Brandeburg 已提交
10621
		err = request_irq(pf->msix_entries[0].vector,
10622
				  i40e_intr, 0, pf->int_name, pf);
J
Jesse Brandeburg 已提交
10623
		if (err) {
10624
			clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
J
Jesse Brandeburg 已提交
10625
			dev_info(&pf->pdev->dev,
C
Catherine Sullivan 已提交
10626
				 "request_irq for %s failed: %d\n",
10627
				 pf->int_name, err);
J
Jesse Brandeburg 已提交
10628 10629 10630 10631
			return -EFAULT;
		}
	}

10632
	i40e_enable_misc_int_causes(pf);
J
Jesse Brandeburg 已提交
10633 10634 10635 10636 10637 10638 10639

	/* associate no queues to the misc vector */
	wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
	wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);

	i40e_flush(hw);

10640
	i40e_irq_dynamic_enable_icr0(pf);
J
Jesse Brandeburg 已提交
10641 10642 10643 10644

	return err;
}

10645 10646 10647 10648 10649 10650 10651 10652 10653 10654 10655 10656 10657 10658 10659 10660 10661 10662 10663 10664 10665 10666 10667 10668 10669 10670 10671 10672 10673 10674 10675 10676 10677 10678 10679 10680 10681 10682 10683 10684 10685 10686 10687 10688 10689 10690
/**
 * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
 * @vsi: Pointer to vsi structure
 * @seed: Buffter to store the hash keys
 * @lut: Buffer to store the lookup table entries
 * @lut_size: Size of buffer to store the lookup table entries
 *
 * Return 0 on success, negative on failure
 */
static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
			   u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int ret = 0;

	if (seed) {
		ret = i40e_aq_get_rss_key(hw, vsi->id,
			(struct i40e_aqc_get_set_rss_key_data *)seed);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Cannot get RSS key, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			return ret;
		}
	}

	if (lut) {
		bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;

		ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Cannot get RSS lut, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			return ret;
		}
	}

	return ret;
}

10691
/**
10692
 * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
10693
 * @vsi: Pointer to vsi structure
10694
 * @seed: RSS hash seed
10695 10696 10697 10698
 * @lut: Lookup table
 * @lut_size: Lookup table size
 *
 * Returns 0 on success, negative on failure
J
Jesse Brandeburg 已提交
10699
 **/
10700 10701
static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
			       const u8 *lut, u16 lut_size)
J
Jesse Brandeburg 已提交
10702
{
10703
	struct i40e_pf *pf = vsi->back;
10704
	struct i40e_hw *hw = &pf->hw;
10705
	u16 vf_id = vsi->vf_id;
10706
	u8 i;
J
Jesse Brandeburg 已提交
10707

10708
	/* Fill out hash function seed */
10709 10710 10711
	if (seed) {
		u32 *seed_dw = (u32 *)seed;

10712 10713
		if (vsi->type == I40E_VSI_MAIN) {
			for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
10714
				wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
10715 10716
		} else if (vsi->type == I40E_VSI_SRIOV) {
			for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
10717
				wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
10718 10719 10720
		} else {
			dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
		}
10721 10722 10723 10724 10725
	}

	if (lut) {
		u32 *lut_dw = (u32 *)lut;

10726 10727 10728 10729 10730 10731 10732 10733 10734
		if (vsi->type == I40E_VSI_MAIN) {
			if (lut_size != I40E_HLUT_ARRAY_SIZE)
				return -EINVAL;
			for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
				wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
		} else if (vsi->type == I40E_VSI_SRIOV) {
			if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
				return -EINVAL;
			for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
10735
				wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
10736 10737 10738
		} else {
			dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
		}
10739 10740 10741 10742 10743 10744
	}
	i40e_flush(hw);

	return 0;
}

10745 10746 10747 10748 10749 10750 10751 10752 10753 10754 10755 10756 10757 10758 10759 10760 10761 10762 10763 10764
/**
 * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
 * @vsi: Pointer to VSI structure
 * @seed: Buffer to store the keys
 * @lut: Buffer to store the lookup table entries
 * @lut_size: Size of buffer to store the lookup table entries
 *
 * Returns 0 on success, negative on failure
 */
static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
			    u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 i;

	if (seed) {
		u32 *seed_dw = (u32 *)seed;

		for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
10765
			seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
10766 10767 10768 10769 10770 10771 10772 10773 10774 10775 10776 10777 10778 10779 10780 10781 10782 10783 10784 10785 10786 10787 10788 10789 10790 10791
	}
	if (lut) {
		u32 *lut_dw = (u32 *)lut;

		if (lut_size != I40E_HLUT_ARRAY_SIZE)
			return -EINVAL;
		for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
			lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
	}

	return 0;
}

/**
 * i40e_config_rss - Configure RSS keys and lut
 * @vsi: Pointer to VSI structure
 * @seed: RSS hash seed
 * @lut: Lookup table
 * @lut_size: Lookup table size
 *
 * Returns 0 on success, negative on failure
 */
int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;

10792
	if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
10793 10794 10795 10796 10797 10798 10799 10800 10801 10802 10803 10804 10805 10806 10807 10808
		return i40e_config_rss_aq(vsi, seed, lut, lut_size);
	else
		return i40e_config_rss_reg(vsi, seed, lut, lut_size);
}

/**
 * i40e_get_rss - Get RSS keys and lut
 * @vsi: Pointer to VSI structure
 * @seed: Buffer to store the keys
 * @lut: Buffer to store the lookup table entries
 * lut_size: Size of buffer to store the lookup table entries
 *
 * Returns 0 on success, negative on failure
 */
int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
10809 10810
	struct i40e_pf *pf = vsi->back;

10811
	if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
10812 10813 10814
		return i40e_get_rss_aq(vsi, seed, lut, lut_size);
	else
		return i40e_get_rss_reg(vsi, seed, lut, lut_size);
10815 10816
}

10817 10818 10819 10820 10821 10822 10823
/**
 * i40e_fill_rss_lut - Fill the RSS lookup table with default values
 * @pf: Pointer to board private structure
 * @lut: Lookup table
 * @rss_table_size: Lookup table size
 * @rss_size: Range of queue number for hashing
 */
10824 10825
void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
		       u16 rss_table_size, u16 rss_size)
10826 10827 10828 10829 10830 10831 10832
{
	u16 i;

	for (i = 0; i < rss_table_size; i++)
		lut[i] = i % rss_size;
}

10833
/**
10834
 * i40e_pf_config_rss - Prepare for RSS if used
10835 10836
 * @pf: board private structure
 **/
10837
static int i40e_pf_config_rss(struct i40e_pf *pf)
10838 10839 10840
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	u8 seed[I40E_HKEY_ARRAY_SIZE];
10841
	u8 *lut;
10842 10843 10844
	struct i40e_hw *hw = &pf->hw;
	u32 reg_val;
	u64 hena;
10845
	int ret;
10846

J
Jesse Brandeburg 已提交
10847
	/* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
10848 10849
	hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
		((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
10850 10851
	hena |= i40e_pf_get_default_rss_hena(pf);

10852 10853
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
J
Jesse Brandeburg 已提交
10854

10855
	/* Determine the RSS table size based on the hardware capabilities */
10856
	reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
10857 10858 10859
	reg_val = (pf->rss_table_size == 512) ?
			(reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
			(reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
10860
	i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
10861

10862
	/* Determine the RSS size of the VSI */
10863 10864
	if (!vsi->rss_size) {
		u16 qcount;
M
Mitch Williams 已提交
10865 10866 10867 10868 10869 10870 10871
		/* If the firmware does something weird during VSI init, we
		 * could end up with zero TCs. Check for that to avoid
		 * divide-by-zero. It probably won't pass traffic, but it also
		 * won't panic.
		 */
		qcount = vsi->num_queue_pairs /
			 (vsi->tc_config.numtc ? vsi->tc_config.numtc : 1);
10872 10873
		vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
	}
10874 10875
	if (!vsi->rss_size)
		return -EINVAL;
10876

10877 10878 10879 10880
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;

10881 10882 10883 10884 10885
	/* Use user configured lut if there is one, otherwise use default */
	if (vsi->rss_lut_user)
		memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
	else
		i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
10886

10887 10888 10889 10890 10891 10892 10893
	/* Use user configured hash key if there is one, otherwise
	 * use default.
	 */
	if (vsi->rss_hkey_user)
		memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
	else
		netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
10894
	ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
10895 10896 10897
	kfree(lut);

	return ret;
J
Jesse Brandeburg 已提交
10898 10899
}

10900 10901 10902 10903 10904 10905 10906
/**
 * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
 * @pf: board private structure
 * @queue_count: the requested queue count for rss.
 *
 * returns 0 if rss is not enabled, if enabled returns the final rss queue
 * count which may be different from the requested queue count.
10907
 * Note: expects to be called while under rtnl_lock()
10908 10909 10910
 **/
int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
{
10911 10912 10913
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	int new_rss_size;

10914 10915 10916
	if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
		return 0;

10917
	new_rss_size = min_t(int, queue_count, pf->rss_size_max);
10918

10919
	if (queue_count != vsi->num_queue_pairs) {
10920 10921
		u16 qcount;

10922
		vsi->req_queue_pairs = queue_count;
10923
		i40e_prep_for_reset(pf, true);
10924

10925
		pf->alloc_rss_size = new_rss_size;
10926

10927
		i40e_reset_and_rebuild(pf, true, true);
10928 10929 10930 10931 10932 10933 10934 10935 10936 10937 10938

		/* Discard the user configured hash keys and lut, if less
		 * queues are enabled.
		 */
		if (queue_count < vsi->rss_size) {
			i40e_clear_rss_config_user(vsi);
			dev_dbg(&pf->pdev->dev,
				"discard user configured hash keys and lut\n");
		}

		/* Reset vsi->rss_size, as number of enabled queues changed */
10939 10940
		qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
		vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
10941

10942
		i40e_pf_config_rss(pf);
10943
	}
10944 10945
	dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
		 vsi->req_queue_pairs, pf->rss_size_max);
10946
	return pf->alloc_rss_size;
10947 10948
}

10949
/**
10950
 * i40e_get_partition_bw_setting - Retrieve BW settings for this PF partition
10951 10952
 * @pf: board private structure
 **/
10953
i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
10954 10955 10956 10957 10958 10959 10960 10961 10962 10963
{
	i40e_status status;
	bool min_valid, max_valid;
	u32 max_bw, min_bw;

	status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
					   &min_valid, &max_valid);

	if (!status) {
		if (min_valid)
10964
			pf->min_bw = min_bw;
10965
		if (max_valid)
10966
			pf->max_bw = max_bw;
10967 10968 10969 10970 10971 10972
	}

	return status;
}

/**
10973
 * i40e_set_partition_bw_setting - Set BW settings for this PF partition
10974 10975
 * @pf: board private structure
 **/
10976
i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
10977 10978 10979 10980
{
	struct i40e_aqc_configure_partition_bw_data bw_data;
	i40e_status status;

10981
	/* Set the valid bit for this PF */
10982
	bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
10983 10984
	bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
	bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;
10985 10986 10987 10988 10989 10990 10991 10992

	/* Set the new bandwidths */
	status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);

	return status;
}

/**
10993
 * i40e_commit_partition_bw_setting - Commit BW settings for this PF partition
10994 10995
 * @pf: board private structure
 **/
10996
i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
10997 10998 10999 11000 11001 11002 11003 11004 11005 11006 11007 11008 11009 11010 11011 11012 11013 11014 11015
{
	/* Commit temporary BW setting to permanent NVM image */
	enum i40e_admin_queue_err last_aq_status;
	i40e_status ret;
	u16 nvm_word;

	if (pf->hw.partition_id != 1) {
		dev_info(&pf->pdev->dev,
			 "Commit BW only works on partition 1! This is partition %d",
			 pf->hw.partition_id);
		ret = I40E_NOT_SUPPORTED;
		goto bw_commit_out;
	}

	/* Acquire NVM for read access */
	ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
	last_aq_status = pf->hw.aq.asq_last_status;
	if (ret) {
		dev_info(&pf->pdev->dev,
11016 11017 11018
			 "Cannot acquire NVM for read access, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
11019 11020 11021 11022 11023 11024 11025 11026 11027 11028 11029 11030 11031 11032
		goto bw_commit_out;
	}

	/* Read word 0x10 of NVM - SW compatibility word 1 */
	ret = i40e_aq_read_nvm(&pf->hw,
			       I40E_SR_NVM_CONTROL_WORD,
			       0x10, sizeof(nvm_word), &nvm_word,
			       false, NULL);
	/* Save off last admin queue command status before releasing
	 * the NVM
	 */
	last_aq_status = pf->hw.aq.asq_last_status;
	i40e_release_nvm(&pf->hw);
	if (ret) {
11033 11034 11035
		dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
11036 11037 11038 11039 11040 11041 11042 11043 11044 11045 11046
		goto bw_commit_out;
	}

	/* Wait a bit for NVM release to complete */
	msleep(50);

	/* Acquire NVM for write access */
	ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
	last_aq_status = pf->hw.aq.asq_last_status;
	if (ret) {
		dev_info(&pf->pdev->dev,
11047 11048 11049
			 "Cannot acquire NVM for write access, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
11050 11051 11052 11053 11054 11055 11056 11057 11058
		goto bw_commit_out;
	}
	/* Write it back out unchanged to initiate update NVM,
	 * which will force a write of the shadow (alt) RAM to
	 * the NVM - thus storing the bandwidth values permanently.
	 */
	ret = i40e_aq_update_nvm(&pf->hw,
				 I40E_SR_NVM_CONTROL_WORD,
				 0x10, sizeof(nvm_word),
11059
				 &nvm_word, true, 0, NULL);
11060 11061 11062 11063 11064 11065 11066
	/* Save off last admin queue command status before releasing
	 * the NVM
	 */
	last_aq_status = pf->hw.aq.asq_last_status;
	i40e_release_nvm(&pf->hw);
	if (ret)
		dev_info(&pf->pdev->dev,
11067 11068 11069
			 "BW settings NOT SAVED, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
11070 11071 11072 11073 11074
bw_commit_out:

	return ret;
}

J
Jesse Brandeburg 已提交
11075 11076 11077 11078 11079 11080 11081 11082 11083 11084 11085 11086 11087 11088 11089 11090
/**
 * i40e_sw_init - Initialize general software structures (struct i40e_pf)
 * @pf: board private structure to initialize
 *
 * i40e_sw_init initializes the Adapter private data structure.
 * Fields are initialized based on PCI device information and
 * OS network device settings (MTU size).
 **/
static int i40e_sw_init(struct i40e_pf *pf)
{
	int err = 0;
	int size;

	/* Set default capability flags */
	pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
		    I40E_FLAG_MSI_ENABLED     |
11091 11092
		    I40E_FLAG_MSIX_ENABLED;

11093
	/* Set default ITR */
11094 11095
	pf->rx_itr_default = I40E_ITR_RX_DEF;
	pf->tx_itr_default = I40E_ITR_TX_DEF;
11096

11097 11098 11099
	/* Depending on PF configurations, it is possible that the RSS
	 * maximum might end up larger than the available queues
	 */
11100
	pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
11101
	pf->alloc_rss_size = 1;
11102
	pf->rss_table_size = pf->hw.func_caps.rss_table_size;
11103 11104
	pf->rss_size_max = min_t(int, pf->rss_size_max,
				 pf->hw.func_caps.num_tx_qp);
J
Jesse Brandeburg 已提交
11105 11106
	if (pf->hw.func_caps.rss) {
		pf->flags |= I40E_FLAG_RSS_ENABLED;
11107 11108
		pf->alloc_rss_size = min_t(int, pf->rss_size_max,
					   num_online_cpus());
J
Jesse Brandeburg 已提交
11109 11110
	}

11111
	/* MFP mode enabled */
11112
	if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
11113 11114
		pf->flags |= I40E_FLAG_MFP_ENABLED;
		dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
11115
		if (i40e_get_partition_bw_setting(pf)) {
11116
			dev_warn(&pf->pdev->dev,
11117 11118
				 "Could not get partition bw settings\n");
		} else {
11119
			dev_info(&pf->pdev->dev,
11120 11121 11122 11123 11124 11125
				 "Partition BW Min = %8.8x, Max = %8.8x\n",
				 pf->min_bw, pf->max_bw);

			/* nudge the Tx scheduler */
			i40e_set_partition_bw_setting(pf);
		}
11126 11127
	}

11128 11129 11130 11131
	if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
	    (pf->hw.func_caps.fd_filters_best_effort > 0)) {
		pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
		pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
11132 11133
		if (pf->flags & I40E_FLAG_MFP_ENABLED &&
		    pf->hw.num_partitions > 1)
11134
			dev_info(&pf->pdev->dev,
A
Anjali Singhai Jain 已提交
11135
				 "Flow Director Sideband mode Disabled in MFP mode\n");
11136 11137
		else
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
11138 11139 11140 11141
		pf->fdir_pf_filter_count =
				 pf->hw.func_caps.fd_filters_guaranteed;
		pf->hw.fdir_shared_filter_count =
				 pf->hw.func_caps.fd_filters_best_effort;
J
Jesse Brandeburg 已提交
11142 11143
	}

11144
	if (pf->hw.mac.type == I40E_MAC_X722) {
11145 11146 11147 11148 11149 11150 11151 11152 11153 11154 11155
		pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
				    I40E_HW_128_QP_RSS_CAPABLE |
				    I40E_HW_ATR_EVICT_CAPABLE |
				    I40E_HW_WB_ON_ITR_CAPABLE |
				    I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
				    I40E_HW_NO_PCI_LINK_CHECK |
				    I40E_HW_USE_SET_LLDP_MIB |
				    I40E_HW_GENEVE_OFFLOAD_CAPABLE |
				    I40E_HW_PTP_L4_CAPABLE |
				    I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
				    I40E_HW_OUTER_UDP_CSUM_CAPABLE);
11156 11157 11158 11159 11160 11161 11162 11163

#define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
		if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
		    I40E_FDEVICT_PCTYPE_DEFAULT) {
			dev_warn(&pf->pdev->dev,
				 "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
			pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
		}
11164 11165 11166 11167
	} else if ((pf->hw.aq.api_maj_ver > 1) ||
		   ((pf->hw.aq.api_maj_ver == 1) &&
		    (pf->hw.aq.api_min_ver > 4))) {
		/* Supported in FW API version higher than 1.4 */
11168
		pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
11169 11170 11171
	}

	/* Enable HW ATR eviction if possible */
11172
	if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
11173 11174
		pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;

B
Bimmy Pujari 已提交
11175
	if ((pf->hw.mac.type == I40E_MAC_XL710) &&
11176
	    (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
11177
	    (pf->hw.aq.fw_maj_ver < 4))) {
11178
		pf->hw_features |= I40E_HW_RESTART_AUTONEG;
11179
		/* No DCB support  for FW < v4.33 */
11180
		pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
11181 11182 11183
	}

	/* Disable FW LLDP if FW < v4.3 */
B
Bimmy Pujari 已提交
11184
	if ((pf->hw.mac.type == I40E_MAC_XL710) &&
11185 11186
	    (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
	    (pf->hw.aq.fw_maj_ver < 4)))
11187
		pf->hw_features |= I40E_HW_STOP_FW_LLDP;
11188 11189

	/* Use the FW Set LLDP MIB API if FW > v4.40 */
B
Bimmy Pujari 已提交
11190
	if ((pf->hw.mac.type == I40E_MAC_XL710) &&
11191 11192
	    (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
	    (pf->hw.aq.fw_maj_ver >= 5)))
11193
		pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;
11194

11195 11196 11197 11198 11199
	/* Enable PTP L4 if FW > v6.0 */
	if (pf->hw.mac.type == I40E_MAC_XL710 &&
	    pf->hw.aq.fw_maj_ver >= 6)
		pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;

A
Avinash Dayanand 已提交
11200
	if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
J
Jesse Brandeburg 已提交
11201
		pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
11202
		pf->flags |= I40E_FLAG_VMDQ_ENABLED;
J
Jesse Brandeburg 已提交
11203
		pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
J
Jesse Brandeburg 已提交
11204 11205
	}

A
Avinash Dayanand 已提交
11206
	if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
11207 11208 11209 11210
		pf->flags |= I40E_FLAG_IWARP_ENABLED;
		/* IWARP needs one extra vector for CQP just like MISC.*/
		pf->num_iwarp_msix = (int)num_online_cpus() + 1;
	}
11211 11212 11213 11214 11215 11216 11217 11218 11219 11220
	/* Stopping the FW LLDP engine is only supported on the
	 * XL710 with a FW ver >= 1.7.  Also, stopping FW LLDP
	 * engine is not supported if NPAR is functioning on this
	 * part
	 */
	if (pf->hw.mac.type == I40E_MAC_XL710 &&
	    !pf->hw.func_caps.npar_enable &&
	    (pf->hw.aq.api_maj_ver > 1 ||
	     (pf->hw.aq.api_maj_ver == 1 && pf->hw.aq.api_min_ver > 6)))
		pf->hw_features |= I40E_HW_STOPPABLE_FW_LLDP;
11221

J
Jesse Brandeburg 已提交
11222
#ifdef CONFIG_PCI_IOV
11223
	if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
J
Jesse Brandeburg 已提交
11224 11225 11226 11227 11228 11229 11230 11231 11232 11233 11234
		pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
		pf->flags |= I40E_FLAG_SRIOV_ENABLED;
		pf->num_req_vfs = min_t(int,
					pf->hw.func_caps.num_vfs,
					I40E_MAX_VF_COUNT);
	}
#endif /* CONFIG_PCI_IOV */
	pf->eeprom_version = 0xDEAD;
	pf->lan_veb = I40E_NO_VEB;
	pf->lan_vsi = I40E_NO_VSI;

11235 11236 11237
	/* By default FW has this off for performance reasons */
	pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;

J
Jesse Brandeburg 已提交
11238 11239 11240 11241 11242 11243 11244 11245 11246 11247 11248
	/* set up queue assignment tracking */
	size = sizeof(struct i40e_lump_tracking)
		+ (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
	pf->qp_pile = kzalloc(size, GFP_KERNEL);
	if (!pf->qp_pile) {
		err = -ENOMEM;
		goto sw_init_done;
	}
	pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
	pf->qp_pile->search_hint = 0;

11249 11250
	pf->tx_timeout_recovery_level = 1;

J
Jesse Brandeburg 已提交
11251 11252 11253 11254 11255 11256
	mutex_init(&pf->switch_mutex);

sw_init_done:
	return err;
}

11257 11258 11259 11260 11261 11262 11263 11264 11265 11266 11267 11268 11269 11270 11271 11272 11273 11274
/**
 * i40e_set_ntuple - set the ntuple feature flag and take action
 * @pf: board private structure to initialize
 * @features: the feature set that the stack is suggesting
 *
 * returns a bool to indicate if reset needs to happen
 **/
bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
{
	bool need_reset = false;

	/* Check if Flow Director n-tuple support was enabled or disabled.  If
	 * the state changed, we need to reset.
	 */
	if (features & NETIF_F_NTUPLE) {
		/* Enable filters and mark for reset */
		if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
			need_reset = true;
11275 11276 11277 11278
		/* enable FD_SB only if there is MSI-X vector and no cloud
		 * filters exist
		 */
		if (pf->num_fdsb_msix > 0 && !pf->num_cloud_filters) {
11279
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
11280 11281
			pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
		}
11282 11283 11284 11285 11286 11287
	} else {
		/* turn off filters, mark for reset and clear SW filter list */
		if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
			need_reset = true;
			i40e_fdir_filter_exit(pf);
		}
11288 11289
		pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
		clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state);
11290 11291
		pf->flags |= I40E_FLAG_FD_SB_INACTIVE;

11292
		/* reset fd counters */
11293 11294
		pf->fd_add_err = 0;
		pf->fd_atr_cnt = 0;
11295
		/* if ATR was auto disabled it can be re-enabled. */
11296
		if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
11297 11298
			if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
			    (I40E_DEBUG_FD & pf->hw.debug_mask))
11299
				dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
11300 11301 11302 11303
	}
	return need_reset;
}

11304 11305 11306 11307 11308 11309 11310 11311 11312 11313 11314 11315 11316 11317 11318 11319 11320 11321 11322 11323 11324 11325
/**
 * i40e_clear_rss_lut - clear the rx hash lookup table
 * @vsi: the VSI being configured
 **/
static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 vf_id = vsi->vf_id;
	u8 i;

	if (vsi->type == I40E_VSI_MAIN) {
		for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
			wr32(hw, I40E_PFQF_HLUT(i), 0);
	} else if (vsi->type == I40E_VSI_SRIOV) {
		for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
			i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
	} else {
		dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
	}
}

J
Jesse Brandeburg 已提交
11326 11327 11328 11329
/**
 * i40e_set_features - set the netdev feature flags
 * @netdev: ptr to the netdev being adjusted
 * @features: the feature set that the stack is suggesting
11330
 * Note: expects to be called while under rtnl_lock()
J
Jesse Brandeburg 已提交
11331 11332 11333 11334 11335 11336
 **/
static int i40e_set_features(struct net_device *netdev,
			     netdev_features_t features)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
11337 11338
	struct i40e_pf *pf = vsi->back;
	bool need_reset;
J
Jesse Brandeburg 已提交
11339

11340 11341 11342 11343 11344 11345
	if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
		i40e_pf_config_rss(pf);
	else if (!(features & NETIF_F_RXHASH) &&
		 netdev->features & NETIF_F_RXHASH)
		i40e_clear_rss_lut(vsi);

J
Jesse Brandeburg 已提交
11346 11347 11348 11349 11350
	if (features & NETIF_F_HW_VLAN_CTAG_RX)
		i40e_vlan_stripping_enable(vsi);
	else
		i40e_vlan_stripping_disable(vsi);

11351 11352 11353 11354 11355 11356
	if (!(features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
		dev_err(&pf->pdev->dev,
			"Offloaded tc filters active, can't turn hw_tc_offload off");
		return -EINVAL;
	}

11357 11358 11359
	need_reset = i40e_set_ntuple(pf, features);

	if (need_reset)
A
Amritha Nambiar 已提交
11360
		i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
11361

J
Jesse Brandeburg 已提交
11362 11363 11364
	return 0;
}

11365
/**
11366
 * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
11367 11368 11369 11370 11371
 * @pf: board private structure
 * @port: The UDP port to look up
 *
 * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
 **/
11372
static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, u16 port)
11373 11374 11375 11376
{
	u8 i;

	for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
11377
		if (pf->udp_ports[i].port == port)
11378 11379 11380 11381 11382 11383 11384
			return i;
	}

	return i;
}

/**
11385
 * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
11386
 * @netdev: This physical port's netdev
11387
 * @ti: Tunnel endpoint information
11388
 **/
11389 11390
static void i40e_udp_tunnel_add(struct net_device *netdev,
				struct udp_tunnel_info *ti)
11391 11392 11393 11394
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
11395
	u16 port = ntohs(ti->port);
11396 11397 11398
	u8 next_idx;
	u8 idx;

11399
	idx = i40e_get_udp_port_idx(pf, port);
11400 11401 11402

	/* Check if port already exists */
	if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
11403
		netdev_info(netdev, "port %d already offloaded\n", port);
11404 11405 11406 11407
		return;
	}

	/* Now check if there is space to add the new port */
11408
	next_idx = i40e_get_udp_port_idx(pf, 0);
11409 11410

	if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
11411
		netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
11412
			    port);
11413 11414 11415
		return;
	}

11416 11417 11418 11419 11420
	switch (ti->type) {
	case UDP_TUNNEL_TYPE_VXLAN:
		pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
		break;
	case UDP_TUNNEL_TYPE_GENEVE:
11421
		if (!(pf->hw_features & I40E_HW_GENEVE_OFFLOAD_CAPABLE))
11422 11423 11424 11425
			return;
		pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
		break;
	default:
11426 11427 11428 11429
		return;
	}

	/* New port: add it and mark its index in the bitmap */
11430
	pf->udp_ports[next_idx].port = port;
11431
	pf->pending_udp_bitmap |= BIT_ULL(next_idx);
11432
	set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
11433 11434
}

11435
/**
11436
 * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
11437
 * @netdev: This physical port's netdev
11438
 * @ti: Tunnel endpoint information
11439
 **/
11440 11441
static void i40e_udp_tunnel_del(struct net_device *netdev,
				struct udp_tunnel_info *ti)
11442 11443 11444 11445
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
11446
	u16 port = ntohs(ti->port);
11447 11448 11449 11450 11451
	u8 idx;

	idx = i40e_get_udp_port_idx(pf, port);

	/* Check if port already exists */
11452 11453
	if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
		goto not_found;
11454

11455 11456 11457 11458 11459 11460 11461 11462 11463 11464 11465
	switch (ti->type) {
	case UDP_TUNNEL_TYPE_VXLAN:
		if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
			goto not_found;
		break;
	case UDP_TUNNEL_TYPE_GENEVE:
		if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
			goto not_found;
		break;
	default:
		goto not_found;
11466
	}
11467 11468 11469 11470

	/* if port exists, set it to 0 (mark for deletion)
	 * and make it pending
	 */
11471
	pf->udp_ports[idx].port = 0;
11472
	pf->pending_udp_bitmap |= BIT_ULL(idx);
11473
	set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
11474 11475 11476 11477

	return;
not_found:
	netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
11478
		    port);
11479 11480
}

11481
static int i40e_get_phys_port_id(struct net_device *netdev,
11482
				 struct netdev_phys_item_id *ppid)
11483 11484 11485 11486 11487
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;

11488
	if (!(pf->hw_features & I40E_HW_PORT_ID_VALID))
11489 11490 11491 11492 11493 11494 11495 11496
		return -EOPNOTSUPP;

	ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
	memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);

	return 0;
}

11497 11498 11499 11500 11501 11502 11503 11504
/**
 * i40e_ndo_fdb_add - add an entry to the hardware database
 * @ndm: the input from the stack
 * @tb: pointer to array of nladdr (unused)
 * @dev: the net device pointer
 * @addr: the MAC address entry being added
 * @flags: instructions from stack about fdb operation
 */
11505 11506
static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
			    struct net_device *dev,
11507
			    const unsigned char *addr, u16 vid,
11508 11509 11510 11511 11512 11513 11514 11515 11516
			    u16 flags)
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_pf *pf = np->vsi->back;
	int err = 0;

	if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
		return -EOPNOTSUPP;

11517 11518 11519 11520 11521
	if (vid) {
		pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
		return -EINVAL;
	}

11522 11523 11524 11525 11526 11527 11528 11529 11530 11531 11532 11533 11534 11535 11536 11537 11538 11539 11540 11541 11542 11543
	/* Hardware does not support aging addresses so if a
	 * ndm_state is given only allow permanent addresses
	 */
	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
		netdev_info(dev, "FDB only supports static addresses\n");
		return -EINVAL;
	}

	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
		err = dev_uc_add_excl(dev, addr);
	else if (is_multicast_ether_addr(addr))
		err = dev_mc_add_excl(dev, addr);
	else
		err = -EINVAL;

	/* Only return duplicate errors if NLM_F_EXCL is set */
	if (err == -EEXIST && !(flags & NLM_F_EXCL))
		err = 0;

	return err;
}

11544 11545 11546 11547 11548 11549 11550 11551 11552 11553 11554
/**
 * i40e_ndo_bridge_setlink - Set the hardware bridge mode
 * @dev: the netdev being configured
 * @nlh: RTNL message
 *
 * Inserts a new hardware bridge if not already created and
 * enables the bridging mode requested (VEB or VEPA). If the
 * hardware bridge has already been inserted and the request
 * is to change the mode then that requires a PF reset to
 * allow rebuild of the components with required hardware
 * bridge mode enabled.
11555 11556
 *
 * Note: expects to be called while under rtnl_lock()
11557 11558
 **/
static int i40e_ndo_bridge_setlink(struct net_device *dev,
11559 11560
				   struct nlmsghdr *nlh,
				   u16 flags)
11561 11562 11563 11564 11565 11566 11567 11568 11569 11570 11571 11572 11573 11574 11575 11576 11577 11578 11579 11580 11581 11582 11583 11584 11585 11586 11587 11588 11589 11590 11591 11592 11593 11594 11595 11596 11597 11598 11599 11600 11601 11602 11603 11604 11605 11606
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_veb *veb = NULL;
	struct nlattr *attr, *br_spec;
	int i, rem;

	/* Only for PF VSI for now */
	if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
		return -EOPNOTSUPP;

	/* Find the HW bridge for PF VSI */
	for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
			veb = pf->veb[i];
	}

	br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);

	nla_for_each_nested(attr, br_spec, rem) {
		__u16 mode;

		if (nla_type(attr) != IFLA_BRIDGE_MODE)
			continue;

		mode = nla_get_u16(attr);
		if ((mode != BRIDGE_MODE_VEPA) &&
		    (mode != BRIDGE_MODE_VEB))
			return -EINVAL;

		/* Insert a new HW bridge */
		if (!veb) {
			veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
			if (veb) {
				veb->bridge_mode = mode;
				i40e_config_bridge_mode(veb);
			} else {
				/* No Bridge HW offload available */
				return -ENOENT;
			}
			break;
		} else if (mode != veb->bridge_mode) {
			/* Existing HW bridge but different mode needs reset */
			veb->bridge_mode = mode;
11607 11608 11609 11610 11611
			/* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
			if (mode == BRIDGE_MODE_VEB)
				pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
			else
				pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
A
Amritha Nambiar 已提交
11612
			i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
11613 11614 11615 11616 11617 11618 11619 11620 11621 11622 11623 11624 11625 11626
			break;
		}
	}

	return 0;
}

/**
 * i40e_ndo_bridge_getlink - Get the hardware bridge mode
 * @skb: skb buff
 * @pid: process id
 * @seq: RTNL message seq #
 * @dev: the netdev being configured
 * @filter_mask: unused
11627
 * @nlflags: netlink flags passed in
11628 11629 11630 11631 11632 11633
 *
 * Return the mode in which the hardware bridge is operating in
 * i.e VEB or VEPA.
 **/
static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
				   struct net_device *dev,
11634 11635
				   u32 __always_unused filter_mask,
				   int nlflags)
11636 11637 11638 11639 11640 11641 11642 11643 11644 11645 11646 11647 11648 11649 11650 11651 11652 11653 11654 11655
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_veb *veb = NULL;
	int i;

	/* Only for PF VSI for now */
	if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
		return -EOPNOTSUPP;

	/* Find the HW bridge for the PF VSI */
	for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
			veb = pf->veb[i];
	}

	if (!veb)
		return 0;

11656
	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
11657
				       0, 0, nlflags, filter_mask, NULL);
11658 11659
}

11660 11661 11662
/**
 * i40e_features_check - Validate encapsulated packet conforms to limits
 * @skb: skb buff
J
Jean Sacren 已提交
11663
 * @dev: This physical port's netdev
11664 11665 11666 11667 11668 11669
 * @features: Offload features that the stack believes apply
 **/
static netdev_features_t i40e_features_check(struct sk_buff *skb,
					     struct net_device *dev,
					     netdev_features_t features)
{
11670 11671 11672 11673 11674 11675 11676 11677 11678 11679 11680 11681 11682 11683 11684 11685 11686 11687 11688 11689 11690 11691 11692 11693 11694 11695 11696 11697 11698 11699 11700 11701 11702 11703 11704 11705 11706 11707 11708 11709 11710 11711
	size_t len;

	/* No point in doing any of this if neither checksum nor GSO are
	 * being requested for this frame.  We can rule out both by just
	 * checking for CHECKSUM_PARTIAL
	 */
	if (skb->ip_summed != CHECKSUM_PARTIAL)
		return features;

	/* We cannot support GSO if the MSS is going to be less than
	 * 64 bytes.  If it is then we need to drop support for GSO.
	 */
	if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
		features &= ~NETIF_F_GSO_MASK;

	/* MACLEN can support at most 63 words */
	len = skb_network_header(skb) - skb->data;
	if (len & ~(63 * 2))
		goto out_err;

	/* IPLEN and EIPLEN can support at most 127 dwords */
	len = skb_transport_header(skb) - skb_network_header(skb);
	if (len & ~(127 * 4))
		goto out_err;

	if (skb->encapsulation) {
		/* L4TUNLEN can support 127 words */
		len = skb_inner_network_header(skb) - skb_transport_header(skb);
		if (len & ~(127 * 2))
			goto out_err;

		/* IPLEN can support at most 127 dwords */
		len = skb_inner_transport_header(skb) -
		      skb_inner_network_header(skb);
		if (len & ~(127 * 4))
			goto out_err;
	}

	/* No need to validate L4LEN as TCP is the only protocol with a
	 * a flexible value and we support all possible values supported
	 * by TCP, which is at most 15 dwords
	 */
11712 11713

	return features;
11714 11715
out_err:
	return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
11716 11717
}

11718 11719 11720 11721 11722 11723 11724 11725 11726 11727 11728 11729 11730 11731 11732 11733 11734 11735 11736 11737 11738 11739 11740 11741 11742 11743 11744 11745 11746 11747 11748 11749 11750 11751 11752 11753 11754 11755 11756 11757 11758 11759
/**
 * i40e_xdp_setup - add/remove an XDP program
 * @vsi: VSI to changed
 * @prog: XDP program
 **/
static int i40e_xdp_setup(struct i40e_vsi *vsi,
			  struct bpf_prog *prog)
{
	int frame_size = vsi->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
	struct i40e_pf *pf = vsi->back;
	struct bpf_prog *old_prog;
	bool need_reset;
	int i;

	/* Don't allow frames that span over multiple buffers */
	if (frame_size > vsi->rx_buf_len)
		return -EINVAL;

	if (!i40e_enabled_xdp_vsi(vsi) && !prog)
		return 0;

	/* When turning XDP on->off/off->on we reset and rebuild the rings. */
	need_reset = (i40e_enabled_xdp_vsi(vsi) != !!prog);

	if (need_reset)
		i40e_prep_for_reset(pf, true);

	old_prog = xchg(&vsi->xdp_prog, prog);

	if (need_reset)
		i40e_reset_and_rebuild(pf, true, true);

	for (i = 0; i < vsi->num_queue_pairs; i++)
		WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);

	if (old_prog)
		bpf_prog_put(old_prog);

	return 0;
}

/**
11760
 * i40e_xdp - implements ndo_bpf for i40e
11761 11762 11763 11764
 * @dev: netdevice
 * @xdp: XDP command
 **/
static int i40e_xdp(struct net_device *dev,
11765
		    struct netdev_bpf *xdp)
11766 11767 11768 11769 11770 11771 11772 11773 11774 11775 11776 11777
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;

	if (vsi->type != I40E_VSI_MAIN)
		return -EINVAL;

	switch (xdp->command) {
	case XDP_SETUP_PROG:
		return i40e_xdp_setup(vsi, xdp->prog);
	case XDP_QUERY_PROG:
		xdp->prog_attached = i40e_enabled_xdp_vsi(vsi);
11778
		xdp->prog_id = vsi->xdp_prog ? vsi->xdp_prog->aux->id : 0;
11779 11780 11781 11782 11783 11784
		return 0;
	default:
		return -EINVAL;
	}
}

11785
static const struct net_device_ops i40e_netdev_ops = {
J
Jesse Brandeburg 已提交
11786 11787 11788 11789 11790 11791 11792 11793
	.ndo_open		= i40e_open,
	.ndo_stop		= i40e_close,
	.ndo_start_xmit		= i40e_lan_xmit_frame,
	.ndo_get_stats64	= i40e_get_netdev_stats_struct,
	.ndo_set_rx_mode	= i40e_set_rx_mode,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_mac_address	= i40e_set_mac,
	.ndo_change_mtu		= i40e_change_mtu,
J
Jacob Keller 已提交
11794
	.ndo_do_ioctl		= i40e_ioctl,
J
Jesse Brandeburg 已提交
11795 11796 11797 11798 11799 11800
	.ndo_tx_timeout		= i40e_tx_timeout,
	.ndo_vlan_rx_add_vid	= i40e_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid	= i40e_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller	= i40e_netpoll,
#endif
11801
	.ndo_setup_tc		= __i40e_setup_tc,
J
Jesse Brandeburg 已提交
11802 11803 11804
	.ndo_set_features	= i40e_set_features,
	.ndo_set_vf_mac		= i40e_ndo_set_vf_mac,
	.ndo_set_vf_vlan	= i40e_ndo_set_vf_port_vlan,
11805
	.ndo_set_vf_rate	= i40e_ndo_set_vf_bw,
J
Jesse Brandeburg 已提交
11806
	.ndo_get_vf_config	= i40e_ndo_get_vf_config,
M
Mitch Williams 已提交
11807
	.ndo_set_vf_link_state	= i40e_ndo_set_vf_link_state,
11808
	.ndo_set_vf_spoofchk	= i40e_ndo_set_vf_spoofchk,
11809
	.ndo_set_vf_trust	= i40e_ndo_set_vf_trust,
11810 11811
	.ndo_udp_tunnel_add	= i40e_udp_tunnel_add,
	.ndo_udp_tunnel_del	= i40e_udp_tunnel_del,
11812
	.ndo_get_phys_port_id	= i40e_get_phys_port_id,
11813
	.ndo_fdb_add		= i40e_ndo_fdb_add,
11814
	.ndo_features_check	= i40e_features_check,
11815 11816
	.ndo_bridge_getlink	= i40e_ndo_bridge_getlink,
	.ndo_bridge_setlink	= i40e_ndo_bridge_setlink,
11817
	.ndo_bpf		= i40e_xdp,
J
Jesse Brandeburg 已提交
11818 11819 11820 11821 11822 11823 11824 11825 11826 11827 11828 11829 11830 11831
};

/**
 * i40e_config_netdev - Setup the netdev flags
 * @vsi: the VSI being configured
 *
 * Returns 0 on success, negative value on failure
 **/
static int i40e_config_netdev(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_netdev_priv *np;
	struct net_device *netdev;
11832
	u8 broadcast[ETH_ALEN];
J
Jesse Brandeburg 已提交
11833 11834
	u8 mac_addr[ETH_ALEN];
	int etherdev_size;
11835 11836
	netdev_features_t hw_enc_features;
	netdev_features_t hw_features;
J
Jesse Brandeburg 已提交
11837 11838

	etherdev_size = sizeof(struct i40e_netdev_priv);
11839
	netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
J
Jesse Brandeburg 已提交
11840 11841 11842 11843 11844 11845 11846
	if (!netdev)
		return -ENOMEM;

	vsi->netdev = netdev;
	np = netdev_priv(netdev);
	np->vsi = vsi;

11847 11848 11849 11850 11851 11852 11853 11854 11855 11856 11857 11858 11859 11860 11861 11862 11863
	hw_enc_features = NETIF_F_SG			|
			  NETIF_F_IP_CSUM		|
			  NETIF_F_IPV6_CSUM		|
			  NETIF_F_HIGHDMA		|
			  NETIF_F_SOFT_FEATURES		|
			  NETIF_F_TSO			|
			  NETIF_F_TSO_ECN		|
			  NETIF_F_TSO6			|
			  NETIF_F_GSO_GRE		|
			  NETIF_F_GSO_GRE_CSUM		|
			  NETIF_F_GSO_PARTIAL		|
			  NETIF_F_GSO_UDP_TUNNEL	|
			  NETIF_F_GSO_UDP_TUNNEL_CSUM	|
			  NETIF_F_SCTP_CRC		|
			  NETIF_F_RXHASH		|
			  NETIF_F_RXCSUM		|
			  0;
J
Jesse Brandeburg 已提交
11864

11865
	if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
11866 11867 11868
		netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;

	netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
11869

11870 11871
	netdev->hw_enc_features |= hw_enc_features;

11872
	/* record features VLANs can make use of */
11873
	netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
J
Jesse Brandeburg 已提交
11874

11875
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
11876 11877
		netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;

11878 11879 11880
	hw_features = hw_enc_features		|
		      NETIF_F_HW_VLAN_CTAG_TX	|
		      NETIF_F_HW_VLAN_CTAG_RX;
11881

11882
	netdev->hw_features |= hw_features;
11883

11884
	netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
11885
	netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
J
Jesse Brandeburg 已提交
11886 11887 11888

	if (vsi->type == I40E_VSI_MAIN) {
		SET_NETDEV_DEV(netdev, &pf->pdev->dev);
11889
		ether_addr_copy(mac_addr, hw->mac.perm_addr);
11890 11891 11892 11893 11894 11895 11896 11897 11898
		/* The following steps are necessary for two reasons. First,
		 * some older NVM configurations load a default MAC-VLAN
		 * filter that will accept any tagged packet, and we want to
		 * replace this with a normal filter. Additionally, it is
		 * possible our MAC address was provided by the platform using
		 * Open Firmware or similar.
		 *
		 * Thus, we need to remove the default filter and install one
		 * specific to the MAC address.
11899 11900
		 */
		i40e_rm_default_mac_filter(vsi, mac_addr);
11901
		spin_lock_bh(&vsi->mac_filter_hash_lock);
11902
		i40e_add_mac_filter(vsi, mac_addr);
11903
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
J
Jesse Brandeburg 已提交
11904
	} else {
11905 11906 11907 11908 11909 11910 11911
		/* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
		 * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
		 * the end, which is 4 bytes long, so force truncation of the
		 * original name by IFNAMSIZ - 4
		 */
		snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
			 IFNAMSIZ - 4,
J
Jesse Brandeburg 已提交
11912 11913
			 pf->vsi[pf->lan_vsi]->netdev->name);
		random_ether_addr(mac_addr);
K
Kiran Patil 已提交
11914

11915
		spin_lock_bh(&vsi->mac_filter_hash_lock);
11916
		i40e_add_mac_filter(vsi, mac_addr);
11917
		spin_unlock_bh(&vsi->mac_filter_hash_lock);
J
Jesse Brandeburg 已提交
11918
	}
K
Kiran Patil 已提交
11919

11920 11921 11922 11923 11924 11925 11926 11927 11928 11929 11930 11931 11932 11933 11934
	/* Add the broadcast filter so that we initially will receive
	 * broadcast packets. Note that when a new VLAN is first added the
	 * driver will convert all filters marked I40E_VLAN_ANY into VLAN
	 * specific filters as part of transitioning into "vlan" operation.
	 * When more VLANs are added, the driver will copy each existing MAC
	 * filter and add it for the new VLAN.
	 *
	 * Broadcast filters are handled specially by
	 * i40e_sync_filters_subtask, as the driver must to set the broadcast
	 * promiscuous bit instead of adding this directly as a MAC/VLAN
	 * filter. The subtask will update the correct broadcast promiscuous
	 * bits as VLANs become active or inactive.
	 */
	eth_broadcast_addr(broadcast);
	spin_lock_bh(&vsi->mac_filter_hash_lock);
11935
	i40e_add_mac_filter(vsi, broadcast);
11936 11937
	spin_unlock_bh(&vsi->mac_filter_hash_lock);

11938 11939
	ether_addr_copy(netdev->dev_addr, mac_addr);
	ether_addr_copy(netdev->perm_addr, mac_addr);
11940

J
Jesse Brandeburg 已提交
11941 11942 11943 11944 11945 11946 11947 11948 11949
	netdev->priv_flags |= IFF_UNICAST_FLT;
	netdev->priv_flags |= IFF_SUPP_NOFCS;
	/* Setup netdev TC information */
	i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);

	netdev->netdev_ops = &i40e_netdev_ops;
	netdev->watchdog_timeo = 5 * HZ;
	i40e_set_ethtool_ops(netdev);

11950 11951
	/* MTU range: 68 - 9706 */
	netdev->min_mtu = ETH_MIN_MTU;
11952
	netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;
11953

J
Jesse Brandeburg 已提交
11954 11955 11956 11957 11958 11959 11960 11961 11962 11963 11964 11965 11966 11967 11968 11969 11970 11971
	return 0;
}

/**
 * i40e_vsi_delete - Delete a VSI from the switch
 * @vsi: the VSI being removed
 *
 * Returns 0 on success, negative value on failure
 **/
static void i40e_vsi_delete(struct i40e_vsi *vsi)
{
	/* remove default VSI is not allowed */
	if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
		return;

	i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
}

11972 11973 11974 11975 11976 11977 11978 11979 11980 11981 11982 11983 11984 11985 11986 11987
/**
 * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
 * @vsi: the VSI being queried
 *
 * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
 **/
int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
{
	struct i40e_veb *veb;
	struct i40e_pf *pf = vsi->back;

	/* Uplink is not a bridge so default to VEB */
	if (vsi->veb_idx == I40E_NO_VEB)
		return 1;

	veb = pf->veb[vsi->veb_idx];
11988 11989 11990 11991 11992 11993
	if (!veb) {
		dev_info(&pf->pdev->dev,
			 "There is no veb associated with the bridge\n");
		return -ENOENT;
	}

11994
	/* Uplink is a bridge in VEPA mode */
11995
	if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
11996
		return 0;
11997 11998 11999 12000
	} else {
		/* Uplink is a bridge in VEB mode */
		return 1;
	}
12001

12002 12003
	/* VEPA is now default bridge, so return 0 */
	return 0;
12004 12005
}

J
Jesse Brandeburg 已提交
12006 12007 12008 12009 12010 12011 12012 12013 12014 12015 12016 12017 12018
/**
 * i40e_add_vsi - Add a VSI to the switch
 * @vsi: the VSI being configured
 *
 * This initializes a VSI context depending on the VSI type to be added and
 * passes it down to the add_vsi aq command.
 **/
static int i40e_add_vsi(struct i40e_vsi *vsi)
{
	int ret = -ENODEV;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
12019 12020 12021
	struct i40e_mac_filter *f;
	struct hlist_node *h;
	int bkt;
K
Kiran Patil 已提交
12022

J
Jesse Brandeburg 已提交
12023 12024 12025 12026 12027 12028 12029 12030 12031 12032 12033 12034 12035 12036 12037 12038 12039 12040
	u8 enabled_tc = 0x1; /* TC0 enabled */
	int f_count = 0;

	memset(&ctxt, 0, sizeof(ctxt));
	switch (vsi->type) {
	case I40E_VSI_MAIN:
		/* The PF's main VSI is already setup as part of the
		 * device initialization, so we'll not bother with
		 * the add_vsi call, but we will retrieve the current
		 * VSI context.
		 */
		ctxt.seid = pf->main_vsi_seid;
		ctxt.pf_num = pf->hw.pf_id;
		ctxt.vf_num = 0;
		ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
		if (ret) {
			dev_info(&pf->pdev->dev,
12041 12042 12043 12044
				 "couldn't get PF vsi config, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12045 12046
			return -ENOENT;
		}
12047
		vsi->info = ctxt.info;
J
Jesse Brandeburg 已提交
12048 12049 12050 12051 12052 12053 12054
		vsi->info.valid_sections = 0;

		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;

		enabled_tc = i40e_pf_get_tc_map(pf);

12055 12056 12057 12058 12059 12060 12061 12062 12063 12064 12065 12066 12067 12068 12069 12070 12071 12072 12073 12074 12075 12076 12077 12078 12079
		/* Source pruning is enabled by default, so the flag is
		 * negative logic - if it's set, we need to fiddle with
		 * the VSI to disable source pruning.
		 */
		if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
			memset(&ctxt, 0, sizeof(ctxt));
			ctxt.seid = pf->main_vsi_seid;
			ctxt.pf_num = pf->hw.pf_id;
			ctxt.vf_num = 0;
			ctxt.info.valid_sections |=
				     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
			ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
			if (ret) {
				dev_info(&pf->pdev->dev,
					 "update vsi failed, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						     pf->hw.aq.asq_last_status));
				ret = -ENOENT;
				goto err;
			}
		}

J
Jesse Brandeburg 已提交
12080
		/* MFP mode setup queue map and update VSI */
12081 12082
		if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
		    !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
J
Jesse Brandeburg 已提交
12083 12084 12085 12086 12087 12088 12089 12090
			memset(&ctxt, 0, sizeof(ctxt));
			ctxt.seid = pf->main_vsi_seid;
			ctxt.pf_num = pf->hw.pf_id;
			ctxt.vf_num = 0;
			i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
			ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
			if (ret) {
				dev_info(&pf->pdev->dev,
12091 12092 12093 12094
					 "update vsi failed, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12095 12096 12097 12098 12099 12100 12101 12102 12103 12104
				ret = -ENOENT;
				goto err;
			}
			/* update the local VSI info queue map */
			i40e_vsi_update_queue_map(vsi, &ctxt);
			vsi->info.valid_sections = 0;
		} else {
			/* Default/Main VSI is only enabled for TC0
			 * reconfigure it to enable all TCs that are
			 * available on the port in SFP mode.
12105 12106
			 * For MFP case the iSCSI PF would use this
			 * flow to enable LAN+iSCSI TC.
J
Jesse Brandeburg 已提交
12107 12108 12109
			 */
			ret = i40e_vsi_config_tc(vsi, enabled_tc);
			if (ret) {
12110 12111 12112
				/* Single TC condition is not fatal,
				 * message and continue
				 */
J
Jesse Brandeburg 已提交
12113
				dev_info(&pf->pdev->dev,
12114 12115 12116 12117 12118
					 "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
					 enabled_tc,
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12119 12120 12121 12122 12123
			}
		}
		break;

	case I40E_VSI_FDIR:
12124 12125 12126
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
12127
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
12128
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
12129 12130
		if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
		    (i40e_is_vsi_uplink_mode_veb(vsi))) {
12131
			ctxt.info.valid_sections |=
12132
			     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
12133
			ctxt.info.switch_id =
12134
			   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
12135
		}
J
Jesse Brandeburg 已提交
12136 12137 12138 12139 12140 12141 12142
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_VMDQ2:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
12143
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
J
Jesse Brandeburg 已提交
12144 12145 12146 12147 12148
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
12149 12150 12151 12152 12153 12154
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}
J
Jesse Brandeburg 已提交
12155 12156 12157 12158 12159 12160 12161 12162 12163

		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_SRIOV:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
		ctxt.uplink_seid = vsi->uplink_seid;
12164
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
J
Jesse Brandeburg 已提交
12165 12166 12167 12168 12169
		ctxt.flags = I40E_AQ_VSI_TYPE_VF;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
12170 12171 12172 12173 12174 12175
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}
J
Jesse Brandeburg 已提交
12176

12177 12178 12179 12180
		if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
			ctxt.info.queueing_opt_flags |=
12181 12182
				(I40E_AQ_VSI_QUE_OPT_TCP_ENA |
				 I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
12183 12184
		}

J
Jesse Brandeburg 已提交
12185 12186
		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
		ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
12187 12188 12189 12190 12191 12192 12193
		if (pf->vf[vsi->vf_id].spoofchk) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
			ctxt.info.sec_flags |=
				(I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
				 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
		}
J
Jesse Brandeburg 已提交
12194 12195 12196 12197
		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

12198 12199 12200 12201
	case I40E_VSI_IWARP:
		/* send down message to iWARP */
		break;

J
Jesse Brandeburg 已提交
12202 12203 12204 12205 12206 12207 12208 12209
	default:
		return -ENODEV;
	}

	if (vsi->type != I40E_VSI_MAIN) {
		ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
12210 12211 12212 12213
				 "add vsi failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12214 12215 12216
			ret = -ENOENT;
			goto err;
		}
12217
		vsi->info = ctxt.info;
J
Jesse Brandeburg 已提交
12218 12219 12220 12221 12222
		vsi->info.valid_sections = 0;
		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;
	}

12223
	vsi->active_filters = 0;
12224
	clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
12225
	spin_lock_bh(&vsi->mac_filter_hash_lock);
J
Jesse Brandeburg 已提交
12226
	/* If macvlan filters already exist, force them to get loaded */
12227
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
12228
		f->state = I40E_FILTER_NEW;
J
Jesse Brandeburg 已提交
12229
		f_count++;
K
Kiran Patil 已提交
12230
	}
12231
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
12232

J
Jesse Brandeburg 已提交
12233 12234
	if (f_count) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
12235
		set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
J
Jesse Brandeburg 已提交
12236 12237 12238 12239 12240 12241
	}

	/* Update VSI BW information */
	ret = i40e_vsi_get_bw_info(vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
12242 12243 12244
			 "couldn't get vsi bw info, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12245 12246 12247 12248 12249 12250 12251 12252 12253 12254 12255 12256 12257 12258 12259 12260
		/* VSI is already added so not tearing that up */
		ret = 0;
	}

err:
	return ret;
}

/**
 * i40e_vsi_release - Delete a VSI and free its resources
 * @vsi: the VSI being removed
 *
 * Returns 0 on success or < 0 on error
 **/
int i40e_vsi_release(struct i40e_vsi *vsi)
{
12261 12262
	struct i40e_mac_filter *f;
	struct hlist_node *h;
J
Jesse Brandeburg 已提交
12263 12264 12265
	struct i40e_veb *veb = NULL;
	struct i40e_pf *pf;
	u16 uplink_seid;
12266
	int i, n, bkt;
J
Jesse Brandeburg 已提交
12267 12268 12269 12270 12271 12272 12273 12274 12275 12276

	pf = vsi->back;

	/* release of a VEB-owner or last VSI is not allowed */
	if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
		dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
			 vsi->seid, vsi->uplink_seid);
		return -ENODEV;
	}
	if (vsi == pf->vsi[pf->lan_vsi] &&
12277
	    !test_bit(__I40E_DOWN, pf->state)) {
J
Jesse Brandeburg 已提交
12278 12279 12280 12281 12282 12283 12284 12285 12286 12287 12288 12289 12290
		dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
		return -ENODEV;
	}

	uplink_seid = vsi->uplink_seid;
	if (vsi->type != I40E_VSI_SRIOV) {
		if (vsi->netdev_registered) {
			vsi->netdev_registered = false;
			if (vsi->netdev) {
				/* results in a call to i40e_close() */
				unregister_netdev(vsi->netdev);
			}
		} else {
12291
			i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
12292 12293 12294 12295
		}
		i40e_vsi_disable_irq(vsi);
	}

12296
	spin_lock_bh(&vsi->mac_filter_hash_lock);
12297 12298 12299 12300 12301 12302 12303 12304

	/* clear the sync flag on all filters */
	if (vsi->netdev) {
		__dev_uc_unsync(vsi->netdev, NULL);
		__dev_mc_unsync(vsi->netdev, NULL);
	}

	/* make sure any remaining filters are marked for deletion */
12305
	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
12306
		__i40e_del_filter(vsi, f);
12307

12308
	spin_unlock_bh(&vsi->mac_filter_hash_lock);
K
Kiran Patil 已提交
12309

J
Jesse Brandeburg 已提交
12310
	i40e_sync_vsi_filters(vsi);
J
Jesse Brandeburg 已提交
12311 12312 12313

	i40e_vsi_delete(vsi);
	i40e_vsi_free_q_vectors(vsi);
12314 12315 12316 12317
	if (vsi->netdev) {
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
J
Jesse Brandeburg 已提交
12318 12319 12320 12321 12322 12323 12324 12325 12326 12327 12328
	i40e_vsi_clear_rings(vsi);
	i40e_vsi_clear(vsi);

	/* If this was the last thing on the VEB, except for the
	 * controlling VSI, remove the VEB, which puts the controlling
	 * VSI onto the next level down in the switch.
	 *
	 * Well, okay, there's one more exception here: don't remove
	 * the orphan VEBs yet.  We'll wait for an explicit remove request
	 * from up the network stack.
	 */
M
Mitch Williams 已提交
12329
	for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
12330 12331 12332 12333 12334 12335 12336 12337 12338 12339 12340 12341 12342 12343 12344 12345 12346 12347 12348 12349 12350 12351 12352 12353 12354 12355 12356 12357 12358 12359 12360 12361 12362 12363 12364
		if (pf->vsi[i] &&
		    pf->vsi[i]->uplink_seid == uplink_seid &&
		    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
			n++;      /* count the VSIs */
		}
	}
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;
		if (pf->veb[i]->uplink_seid == uplink_seid)
			n++;     /* count the VEBs */
		if (pf->veb[i]->seid == uplink_seid)
			veb = pf->veb[i];
	}
	if (n == 0 && veb && veb->uplink_seid != 0)
		i40e_veb_release(veb);

	return 0;
}

/**
 * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
 * @vsi: ptr to the VSI
 *
 * This should only be called after i40e_vsi_mem_alloc() which allocates the
 * corresponding SW VSI structure and initializes num_queue_pairs for the
 * newly allocated VSI.
 *
 * Returns 0 on success or negative on failure
 **/
static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
{
	int ret = -ENOENT;
	struct i40e_pf *pf = vsi->back;

12365
	if (vsi->q_vectors[0]) {
J
Jesse Brandeburg 已提交
12366 12367 12368 12369 12370 12371
		dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
			 vsi->seid);
		return -EEXIST;
	}

	if (vsi->base_vector) {
12372
		dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
J
Jesse Brandeburg 已提交
12373 12374 12375 12376
			 vsi->seid, vsi->base_vector);
		return -EEXIST;
	}

12377
	ret = i40e_vsi_alloc_q_vectors(vsi);
J
Jesse Brandeburg 已提交
12378 12379 12380 12381 12382 12383 12384 12385
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to allocate %d q_vector for VSI %d, ret=%d\n",
			 vsi->num_q_vectors, vsi->seid, ret);
		vsi->num_q_vectors = 0;
		goto vector_setup_out;
	}

12386 12387 12388 12389 12390
	/* In Legacy mode, we do not have to get any other vector since we
	 * piggyback on the misc/ICR0 for queue interrupts.
	*/
	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
		return ret;
12391 12392 12393
	if (vsi->num_q_vectors)
		vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
						 vsi->num_q_vectors, vsi->idx);
J
Jesse Brandeburg 已提交
12394 12395
	if (vsi->base_vector < 0) {
		dev_info(&pf->pdev->dev,
12396 12397
			 "failed to get tracking for %d vectors for VSI %d, err=%d\n",
			 vsi->num_q_vectors, vsi->seid, vsi->base_vector);
J
Jesse Brandeburg 已提交
12398 12399 12400 12401 12402 12403 12404 12405 12406
		i40e_vsi_free_q_vectors(vsi);
		ret = -ENOENT;
		goto vector_setup_out;
	}

vector_setup_out:
	return ret;
}

12407 12408 12409 12410 12411 12412 12413 12414 12415 12416 12417
/**
 * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
 * @vsi: pointer to the vsi.
 *
 * This re-allocates a vsi's queue resources.
 *
 * Returns pointer to the successfully allocated and configured VSI sw struct
 * on success, otherwise returns NULL on failure.
 **/
static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
{
12418
	u16 alloc_queue_pairs;
J
John Underwood 已提交
12419
	struct i40e_pf *pf;
12420 12421 12422
	u8 enabled_tc;
	int ret;

J
John Underwood 已提交
12423 12424 12425 12426 12427
	if (!vsi)
		return NULL;

	pf = vsi->back;

12428 12429 12430 12431 12432 12433 12434 12435 12436
	i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
	i40e_vsi_clear_rings(vsi);

	i40e_vsi_free_arrays(vsi, false);
	i40e_set_num_rings_in_vsi(vsi);
	ret = i40e_vsi_alloc_arrays(vsi, false);
	if (ret)
		goto err_vsi;

12437 12438 12439 12440
	alloc_queue_pairs = vsi->alloc_queue_pairs *
			    (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);

	ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
12441
	if (ret < 0) {
12442
		dev_info(&pf->pdev->dev,
12443
			 "failed to get tracking for %d queues for VSI %d err %d\n",
12444
			 alloc_queue_pairs, vsi->seid, ret);
12445 12446 12447 12448 12449 12450 12451 12452 12453 12454 12455
		goto err_vsi;
	}
	vsi->base_queue = ret;

	/* Update the FW view of the VSI. Force a reset of TC and queue
	 * layout configurations.
	 */
	enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
	pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
	pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
	i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
12456 12457
	if (vsi->type == I40E_VSI_MAIN)
		i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
12458 12459 12460 12461 12462 12463 12464 12465 12466 12467 12468 12469 12470 12471 12472 12473 12474 12475 12476 12477 12478 12479 12480 12481

	/* assign it some queues */
	ret = i40e_alloc_rings(vsi);
	if (ret)
		goto err_rings;

	/* map all of the rings to the q_vectors */
	i40e_vsi_map_rings_to_vectors(vsi);
	return vsi;

err_rings:
	i40e_vsi_free_q_vectors(vsi);
	if (vsi->netdev_registered) {
		vsi->netdev_registered = false;
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
	i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
	i40e_vsi_clear(vsi);
	return NULL;
}

J
Jesse Brandeburg 已提交
12482 12483 12484 12485 12486 12487 12488 12489 12490 12491 12492 12493 12494 12495 12496 12497 12498 12499
/**
 * i40e_vsi_setup - Set up a VSI by a given type
 * @pf: board private structure
 * @type: VSI type
 * @uplink_seid: the switch element to link to
 * @param1: usage depends upon VSI type. For VF types, indicates VF id
 *
 * This allocates the sw VSI structure and its queue resources, then add a VSI
 * to the identified VEB.
 *
 * Returns pointer to the successfully allocated and configure VSI sw struct on
 * success, otherwise returns NULL on failure.
 **/
struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
				u16 uplink_seid, u32 param1)
{
	struct i40e_vsi *vsi = NULL;
	struct i40e_veb *veb = NULL;
12500
	u16 alloc_queue_pairs;
J
Jesse Brandeburg 已提交
12501 12502 12503 12504 12505 12506 12507 12508 12509 12510 12511 12512 12513 12514 12515 12516 12517 12518 12519 12520 12521 12522 12523 12524 12525
	int ret, i;
	int v_idx;

	/* The requested uplink_seid must be either
	 *     - the PF's port seid
	 *              no VEB is needed because this is the PF
	 *              or this is a Flow Director special case VSI
	 *     - seid of an existing VEB
	 *     - seid of a VSI that owns an existing VEB
	 *     - seid of a VSI that doesn't own a VEB
	 *              a new VEB is created and the VSI becomes the owner
	 *     - seid of the PF VSI, which is what creates the first VEB
	 *              this is a special case of the previous
	 *
	 * Find which uplink_seid we were given and create a new VEB if needed
	 */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
			veb = pf->veb[i];
			break;
		}
	}

	if (!veb && uplink_seid != pf->mac_seid) {

M
Mitch Williams 已提交
12526
		for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
12527 12528 12529 12530 12531 12532 12533 12534 12535 12536 12537 12538 12539 12540 12541 12542 12543
			if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
				vsi = pf->vsi[i];
				break;
			}
		}
		if (!vsi) {
			dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
				 uplink_seid);
			return NULL;
		}

		if (vsi->uplink_seid == pf->mac_seid)
			veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
		else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
			veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
12544 12545 12546
		if (veb) {
			if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
				dev_info(&vsi->back->pdev->dev,
S
Shannon Nelson 已提交
12547
					 "New VSI creation error, uplink seid of LAN VSI expected.\n");
12548 12549
				return NULL;
			}
12550 12551 12552 12553 12554 12555 12556 12557
			/* We come up by default in VEPA mode if SRIOV is not
			 * already enabled, in which case we can't force VEPA
			 * mode.
			 */
			if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
				veb->bridge_mode = BRIDGE_MODE_VEPA;
				pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
			}
12558
			i40e_config_bridge_mode(veb);
12559
		}
J
Jesse Brandeburg 已提交
12560 12561 12562 12563 12564 12565 12566 12567 12568 12569 12570 12571 12572 12573 12574 12575 12576 12577
		for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
			if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
				veb = pf->veb[i];
		}
		if (!veb) {
			dev_info(&pf->pdev->dev, "couldn't add VEB\n");
			return NULL;
		}

		vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
		uplink_seid = veb->seid;
	}

	/* get vsi sw struct */
	v_idx = i40e_vsi_mem_alloc(pf, type);
	if (v_idx < 0)
		goto err_alloc;
	vsi = pf->vsi[v_idx];
12578 12579
	if (!vsi)
		goto err_alloc;
J
Jesse Brandeburg 已提交
12580 12581 12582 12583 12584 12585 12586 12587
	vsi->type = type;
	vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);

	if (type == I40E_VSI_MAIN)
		pf->lan_vsi = v_idx;
	else if (type == I40E_VSI_SRIOV)
		vsi->vf_id = param1;
	/* assign it some queues */
12588 12589 12590 12591
	alloc_queue_pairs = vsi->alloc_queue_pairs *
			    (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);

	ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
J
Jesse Brandeburg 已提交
12592
	if (ret < 0) {
12593 12594
		dev_info(&pf->pdev->dev,
			 "failed to get tracking for %d queues for VSI %d err=%d\n",
12595
			 alloc_queue_pairs, vsi->seid, ret);
J
Jesse Brandeburg 已提交
12596 12597 12598 12599 12600 12601 12602 12603 12604 12605 12606 12607 12608 12609 12610 12611 12612 12613 12614 12615 12616 12617
		goto err_vsi;
	}
	vsi->base_queue = ret;

	/* get a VSI from the hardware */
	vsi->uplink_seid = uplink_seid;
	ret = i40e_add_vsi(vsi);
	if (ret)
		goto err_vsi;

	switch (vsi->type) {
	/* setup the netdev if needed */
	case I40E_VSI_MAIN:
	case I40E_VSI_VMDQ2:
		ret = i40e_config_netdev(vsi);
		if (ret)
			goto err_netdev;
		ret = register_netdev(vsi->netdev);
		if (ret)
			goto err_netdev;
		vsi->netdev_registered = true;
		netif_carrier_off(vsi->netdev);
N
Neerav Parikh 已提交
12618 12619 12620 12621
#ifdef CONFIG_I40E_DCB
		/* Setup DCB netlink interface */
		i40e_dcbnl_setup(vsi);
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
12622 12623 12624 12625 12626 12627 12628 12629 12630 12631 12632 12633 12634 12635 12636 12637 12638 12639 12640 12641 12642 12643 12644
		/* fall through */

	case I40E_VSI_FDIR:
		/* set up vectors and rings if needed */
		ret = i40e_vsi_setup_vectors(vsi);
		if (ret)
			goto err_msix;

		ret = i40e_alloc_rings(vsi);
		if (ret)
			goto err_rings;

		/* map all of the rings to the q_vectors */
		i40e_vsi_map_rings_to_vectors(vsi);

		i40e_vsi_reset_stats(vsi);
		break;

	default:
		/* no netdev or rings for the other VSI types */
		break;
	}

12645
	if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
12646 12647 12648
	    (vsi->type == I40E_VSI_VMDQ2)) {
		ret = i40e_vsi_config_rss(vsi);
	}
J
Jesse Brandeburg 已提交
12649 12650 12651 12652 12653 12654 12655 12656 12657 12658 12659 12660 12661 12662 12663 12664 12665 12666 12667 12668 12669 12670 12671 12672 12673 12674 12675 12676 12677 12678 12679 12680 12681 12682 12683 12684 12685 12686 12687
	return vsi;

err_rings:
	i40e_vsi_free_q_vectors(vsi);
err_msix:
	if (vsi->netdev_registered) {
		vsi->netdev_registered = false;
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
err_netdev:
	i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
	i40e_vsi_clear(vsi);
err_alloc:
	return NULL;
}

/**
 * i40e_veb_get_bw_info - Query VEB BW information
 * @veb: the veb to query
 *
 * Query the Tx scheduler BW configuration data for given VEB
 **/
static int i40e_veb_get_bw_info(struct i40e_veb *veb)
{
	struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
	struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
	struct i40e_pf *pf = veb->pf;
	struct i40e_hw *hw = &pf->hw;
	u32 tc_bw_max;
	int ret = 0;
	int i;

	ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
						  &bw_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
12688 12689 12690
			 "query veb bw config failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
12691 12692 12693 12694 12695 12696 12697
		goto out;
	}

	ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
						   &ets_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
12698 12699 12700
			 "query veb bw ets config failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
12701 12702 12703 12704 12705 12706
		goto out;
	}

	veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
	veb->bw_max_quanta = ets_data.tc_bw_max;
	veb->is_abs_credits = bw_data.absolute_credits_enable;
12707
	veb->enabled_tc = ets_data.tc_valid_bits;
J
Jesse Brandeburg 已提交
12708 12709 12710 12711 12712 12713 12714 12715 12716 12717 12718 12719 12720 12721 12722 12723 12724 12725 12726 12727 12728 12729 12730 12731 12732 12733 12734 12735 12736 12737 12738 12739 12740 12741 12742 12743 12744 12745 12746 12747 12748 12749 12750 12751 12752 12753 12754 12755 12756 12757 12758 12759 12760 12761 12762 12763 12764 12765 12766 12767 12768 12769 12770 12771 12772 12773 12774 12775 12776 12777 12778 12779 12780 12781 12782 12783 12784 12785 12786 12787 12788 12789 12790 12791 12792 12793
	tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
		    (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
		veb->bw_tc_limit_credits[i] =
					le16_to_cpu(bw_data.tc_bw_limits[i]);
		veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
	}

out:
	return ret;
}

/**
 * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
 * @pf: board private structure
 *
 * On error: returns error code (negative)
 * On success: returns vsi index in PF (positive)
 **/
static int i40e_veb_mem_alloc(struct i40e_pf *pf)
{
	int ret = -ENOENT;
	struct i40e_veb *veb;
	int i;

	/* Need to protect the allocation of switch elements at the PF level */
	mutex_lock(&pf->switch_mutex);

	/* VEB list may be fragmented if VEB creation/destruction has
	 * been happening.  We can afford to do a quick scan to look
	 * for any free slots in the list.
	 *
	 * find next empty veb slot, looping back around if necessary
	 */
	i = 0;
	while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
		i++;
	if (i >= I40E_MAX_VEB) {
		ret = -ENOMEM;
		goto err_alloc_veb;  /* out of VEB slots! */
	}

	veb = kzalloc(sizeof(*veb), GFP_KERNEL);
	if (!veb) {
		ret = -ENOMEM;
		goto err_alloc_veb;
	}
	veb->pf = pf;
	veb->idx = i;
	veb->enabled_tc = 1;

	pf->veb[i] = veb;
	ret = i;
err_alloc_veb:
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

/**
 * i40e_switch_branch_release - Delete a branch of the switch tree
 * @branch: where to start deleting
 *
 * This uses recursion to find the tips of the branch to be
 * removed, deleting until we get back to and can delete this VEB.
 **/
static void i40e_switch_branch_release(struct i40e_veb *branch)
{
	struct i40e_pf *pf = branch->pf;
	u16 branch_seid = branch->seid;
	u16 veb_idx = branch->idx;
	int i;

	/* release any VEBs on this VEB - RECURSION */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;
		if (pf->veb[i]->uplink_seid == branch->seid)
			i40e_switch_branch_release(pf->veb[i]);
	}

	/* Release the VSIs on this VEB, but not the owner VSI.
	 *
	 * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
	 *       the VEB itself, so don't use (*branch) after this loop.
	 */
M
Mitch Williams 已提交
12794
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
12795 12796 12797 12798 12799 12800 12801 12802 12803 12804 12805 12806 12807 12808 12809 12810 12811 12812 12813 12814 12815 12816 12817 12818 12819 12820 12821 12822 12823 12824 12825 12826 12827 12828 12829 12830 12831 12832 12833 12834 12835 12836 12837 12838 12839 12840 12841 12842 12843 12844 12845
		if (!pf->vsi[i])
			continue;
		if (pf->vsi[i]->uplink_seid == branch_seid &&
		   (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
			i40e_vsi_release(pf->vsi[i]);
		}
	}

	/* There's one corner case where the VEB might not have been
	 * removed, so double check it here and remove it if needed.
	 * This case happens if the veb was created from the debugfs
	 * commands and no VSIs were added to it.
	 */
	if (pf->veb[veb_idx])
		i40e_veb_release(pf->veb[veb_idx]);
}

/**
 * i40e_veb_clear - remove veb struct
 * @veb: the veb to remove
 **/
static void i40e_veb_clear(struct i40e_veb *veb)
{
	if (!veb)
		return;

	if (veb->pf) {
		struct i40e_pf *pf = veb->pf;

		mutex_lock(&pf->switch_mutex);
		if (pf->veb[veb->idx] == veb)
			pf->veb[veb->idx] = NULL;
		mutex_unlock(&pf->switch_mutex);
	}

	kfree(veb);
}

/**
 * i40e_veb_release - Delete a VEB and free its resources
 * @veb: the VEB being removed
 **/
void i40e_veb_release(struct i40e_veb *veb)
{
	struct i40e_vsi *vsi = NULL;
	struct i40e_pf *pf;
	int i, n = 0;

	pf = veb->pf;

	/* find the remaining VSI and check for extras */
M
Mitch Williams 已提交
12846
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
12847 12848 12849 12850 12851 12852 12853 12854 12855 12856 12857 12858 12859 12860 12861 12862 12863 12864 12865 12866 12867 12868 12869 12870 12871 12872 12873 12874 12875 12876 12877 12878 12879 12880 12881 12882 12883
		if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
			n++;
			vsi = pf->vsi[i];
		}
	}
	if (n != 1) {
		dev_info(&pf->pdev->dev,
			 "can't remove VEB %d with %d VSIs left\n",
			 veb->seid, n);
		return;
	}

	/* move the remaining VSI to uplink veb */
	vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
	if (veb->uplink_seid) {
		vsi->uplink_seid = veb->uplink_seid;
		if (veb->uplink_seid == pf->mac_seid)
			vsi->veb_idx = I40E_NO_VEB;
		else
			vsi->veb_idx = veb->veb_idx;
	} else {
		/* floating VEB */
		vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
		vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
	}

	i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
	i40e_veb_clear(veb);
}

/**
 * i40e_add_veb - create the VEB in the switch
 * @veb: the VEB to be instantiated
 * @vsi: the controlling VSI
 **/
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
{
12884
	struct i40e_pf *pf = veb->pf;
12885
	bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
J
Jesse Brandeburg 已提交
12886 12887
	int ret;

12888
	ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
12889
			      veb->enabled_tc, false,
12890
			      &veb->seid, enable_stats, NULL);
12891 12892

	/* get a VEB from the hardware */
J
Jesse Brandeburg 已提交
12893
	if (ret) {
12894 12895 12896 12897
		dev_info(&pf->pdev->dev,
			 "couldn't add VEB, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12898 12899 12900 12901
		return -EPERM;
	}

	/* get statistics counter */
12902
	ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
J
Jesse Brandeburg 已提交
12903 12904
					 &veb->stats_idx, NULL, NULL, NULL);
	if (ret) {
12905 12906 12907 12908
		dev_info(&pf->pdev->dev,
			 "couldn't get VEB statistics idx, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
12909 12910 12911 12912
		return -EPERM;
	}
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
12913 12914 12915 12916 12917
		dev_info(&pf->pdev->dev,
			 "couldn't get VEB bw info, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
J
Jesse Brandeburg 已提交
12918 12919 12920 12921 12922 12923 12924 12925 12926 12927 12928 12929 12930 12931 12932 12933 12934 12935 12936 12937 12938 12939 12940 12941 12942 12943 12944 12945 12946 12947 12948 12949 12950 12951 12952 12953 12954 12955 12956 12957 12958 12959 12960 12961
		return -ENOENT;
	}

	vsi->uplink_seid = veb->seid;
	vsi->veb_idx = veb->idx;
	vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;

	return 0;
}

/**
 * i40e_veb_setup - Set up a VEB
 * @pf: board private structure
 * @flags: VEB setup flags
 * @uplink_seid: the switch element to link to
 * @vsi_seid: the initial VSI seid
 * @enabled_tc: Enabled TC bit-map
 *
 * This allocates the sw VEB structure and links it into the switch
 * It is possible and legal for this to be a duplicate of an already
 * existing VEB.  It is also possible for both uplink and vsi seids
 * to be zero, in order to create a floating VEB.
 *
 * Returns pointer to the successfully allocated VEB sw struct on
 * success, otherwise returns NULL on failure.
 **/
struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
				u16 uplink_seid, u16 vsi_seid,
				u8 enabled_tc)
{
	struct i40e_veb *veb, *uplink_veb = NULL;
	int vsi_idx, veb_idx;
	int ret;

	/* if one seid is 0, the other must be 0 to create a floating relay */
	if ((uplink_seid == 0 || vsi_seid == 0) &&
	    (uplink_seid + vsi_seid != 0)) {
		dev_info(&pf->pdev->dev,
			 "one, not both seid's are 0: uplink=%d vsi=%d\n",
			 uplink_seid, vsi_seid);
		return NULL;
	}

	/* make sure there is such a vsi and uplink */
M
Mitch Williams 已提交
12962
	for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
J
Jesse Brandeburg 已提交
12963 12964
		if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
			break;
M
Mitch Williams 已提交
12965
	if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
J
Jesse Brandeburg 已提交
12966 12967 12968 12969 12970 12971 12972 12973 12974 12975 12976 12977 12978 12979 12980 12981 12982 12983 12984 12985 12986 12987 12988 12989 12990 12991 12992 12993 12994 12995 12996 12997 12998 12999
		dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
			 vsi_seid);
		return NULL;
	}

	if (uplink_seid && uplink_seid != pf->mac_seid) {
		for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
			if (pf->veb[veb_idx] &&
			    pf->veb[veb_idx]->seid == uplink_seid) {
				uplink_veb = pf->veb[veb_idx];
				break;
			}
		}
		if (!uplink_veb) {
			dev_info(&pf->pdev->dev,
				 "uplink seid %d not found\n", uplink_seid);
			return NULL;
		}
	}

	/* get veb sw struct */
	veb_idx = i40e_veb_mem_alloc(pf);
	if (veb_idx < 0)
		goto err_alloc;
	veb = pf->veb[veb_idx];
	veb->flags = flags;
	veb->uplink_seid = uplink_seid;
	veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
	veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);

	/* create the VEB in the switch */
	ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
	if (ret)
		goto err_veb;
S
Shannon Nelson 已提交
13000 13001
	if (vsi_idx == pf->lan_vsi)
		pf->lan_veb = veb->idx;
J
Jesse Brandeburg 已提交
13002 13003 13004 13005 13006 13007 13008 13009 13010 13011

	return veb;

err_veb:
	i40e_veb_clear(veb);
err_alloc:
	return NULL;
}

/**
13012
 * i40e_setup_pf_switch_element - set PF vars based on switch type
J
Jesse Brandeburg 已提交
13013 13014 13015 13016 13017 13018 13019 13020 13021 13022 13023 13024 13025 13026 13027 13028 13029 13030 13031 13032 13033 13034 13035 13036 13037 13038 13039 13040 13041 13042 13043 13044 13045 13046 13047 13048 13049 13050 13051 13052 13053 13054 13055 13056 13057 13058 13059 13060 13061 13062 13063 13064 13065 13066 13067 13068 13069 13070 13071 13072 13073 13074 13075 13076 13077 13078 13079 13080 13081 13082 13083 13084 13085 13086 13087 13088 13089 13090 13091 13092 13093 13094 13095 13096 13097 13098 13099 13100 13101 13102 13103 13104 13105 13106 13107 13108 13109 13110 13111 13112 13113 13114 13115 13116 13117 13118 13119 13120 13121 13122
 * @pf: board private structure
 * @ele: element we are building info from
 * @num_reported: total number of elements
 * @printconfig: should we print the contents
 *
 * helper function to assist in extracting a few useful SEID values.
 **/
static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
				struct i40e_aqc_switch_config_element_resp *ele,
				u16 num_reported, bool printconfig)
{
	u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
	u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
	u8 element_type = ele->element_type;
	u16 seid = le16_to_cpu(ele->seid);

	if (printconfig)
		dev_info(&pf->pdev->dev,
			 "type=%d seid=%d uplink=%d downlink=%d\n",
			 element_type, seid, uplink_seid, downlink_seid);

	switch (element_type) {
	case I40E_SWITCH_ELEMENT_TYPE_MAC:
		pf->mac_seid = seid;
		break;
	case I40E_SWITCH_ELEMENT_TYPE_VEB:
		/* Main VEB? */
		if (uplink_seid != pf->mac_seid)
			break;
		if (pf->lan_veb == I40E_NO_VEB) {
			int v;

			/* find existing or else empty VEB */
			for (v = 0; v < I40E_MAX_VEB; v++) {
				if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
					pf->lan_veb = v;
					break;
				}
			}
			if (pf->lan_veb == I40E_NO_VEB) {
				v = i40e_veb_mem_alloc(pf);
				if (v < 0)
					break;
				pf->lan_veb = v;
			}
		}

		pf->veb[pf->lan_veb]->seid = seid;
		pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
		pf->veb[pf->lan_veb]->pf = pf;
		pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
		break;
	case I40E_SWITCH_ELEMENT_TYPE_VSI:
		if (num_reported != 1)
			break;
		/* This is immediately after a reset so we can assume this is
		 * the PF's VSI
		 */
		pf->mac_seid = uplink_seid;
		pf->pf_seid = downlink_seid;
		pf->main_vsi_seid = seid;
		if (printconfig)
			dev_info(&pf->pdev->dev,
				 "pf_seid=%d main_vsi_seid=%d\n",
				 pf->pf_seid, pf->main_vsi_seid);
		break;
	case I40E_SWITCH_ELEMENT_TYPE_PF:
	case I40E_SWITCH_ELEMENT_TYPE_VF:
	case I40E_SWITCH_ELEMENT_TYPE_EMP:
	case I40E_SWITCH_ELEMENT_TYPE_BMC:
	case I40E_SWITCH_ELEMENT_TYPE_PE:
	case I40E_SWITCH_ELEMENT_TYPE_PA:
		/* ignore these for now */
		break;
	default:
		dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
			 element_type, seid);
		break;
	}
}

/**
 * i40e_fetch_switch_configuration - Get switch config from firmware
 * @pf: board private structure
 * @printconfig: should we print the contents
 *
 * Get the current switch configuration from the device and
 * extract a few useful SEID values.
 **/
int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
{
	struct i40e_aqc_get_switch_config_resp *sw_config;
	u16 next_seid = 0;
	int ret = 0;
	u8 *aq_buf;
	int i;

	aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
	if (!aq_buf)
		return -ENOMEM;

	sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
	do {
		u16 num_reported, num_total;

		ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
						I40E_AQ_LARGE_BUF,
						&next_seid, NULL);
		if (ret) {
			dev_info(&pf->pdev->dev,
13123 13124 13125 13126
				 "get switch config failed err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
13127 13128 13129 13130 13131 13132 13133 13134 13135 13136 13137 13138 13139 13140 13141 13142 13143 13144 13145 13146 13147 13148 13149 13150 13151 13152 13153 13154
			kfree(aq_buf);
			return -ENOENT;
		}

		num_reported = le16_to_cpu(sw_config->header.num_reported);
		num_total = le16_to_cpu(sw_config->header.num_total);

		if (printconfig)
			dev_info(&pf->pdev->dev,
				 "header: %d reported %d total\n",
				 num_reported, num_total);

		for (i = 0; i < num_reported; i++) {
			struct i40e_aqc_switch_config_element_resp *ele =
				&sw_config->element[i];

			i40e_setup_pf_switch_element(pf, ele, num_reported,
						     printconfig);
		}
	} while (next_seid != 0);

	kfree(aq_buf);
	return ret;
}

/**
 * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
 * @pf: board private structure
13155
 * @reinit: if the Main VSI needs to re-initialized.
J
Jesse Brandeburg 已提交
13156 13157 13158
 *
 * Returns 0 on success, negative value on failure
 **/
13159
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
J
Jesse Brandeburg 已提交
13160
{
13161
	u16 flags = 0;
J
Jesse Brandeburg 已提交
13162 13163 13164 13165 13166 13167
	int ret;

	/* find out what's out there already */
	ret = i40e_fetch_switch_configuration(pf, false);
	if (ret) {
		dev_info(&pf->pdev->dev,
13168 13169 13170
			 "couldn't fetch switch config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
13171 13172 13173 13174
		return ret;
	}
	i40e_pf_reset_stats(pf);

13175 13176 13177 13178 13179 13180 13181
	/* set the switch config bit for the whole device to
	 * support limited promisc or true promisc
	 * when user requests promisc. The default is limited
	 * promisc.
	*/

	if ((pf->hw.pf_id == 0) &&
13182
	    !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) {
13183
		flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
13184 13185
		pf->last_sw_conf_flags = flags;
	}
13186 13187 13188 13189 13190

	if (pf->hw.pf_id == 0) {
		u16 valid_flags;

		valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
13191
		ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags, 0,
13192 13193 13194 13195 13196 13197 13198 13199 13200
						NULL);
		if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
			dev_info(&pf->pdev->dev,
				 "couldn't set switch config bits, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
			/* not a fatal problem, just keep going */
		}
13201
		pf->last_sw_conf_valid_flags = valid_flags;
13202 13203
	}

J
Jesse Brandeburg 已提交
13204
	/* first time setup */
13205
	if (pf->lan_vsi == I40E_NO_VSI || reinit) {
J
Jesse Brandeburg 已提交
13206 13207 13208 13209 13210 13211 13212 13213 13214 13215
		struct i40e_vsi *vsi = NULL;
		u16 uplink_seid;

		/* Set up the PF VSI associated with the PF's main VSI
		 * that is already in the HW switch
		 */
		if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
			uplink_seid = pf->veb[pf->lan_veb]->seid;
		else
			uplink_seid = pf->mac_seid;
13216 13217 13218 13219
		if (pf->lan_vsi == I40E_NO_VSI)
			vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
		else if (reinit)
			vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
J
Jesse Brandeburg 已提交
13220 13221
		if (!vsi) {
			dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
A
Amritha Nambiar 已提交
13222
			i40e_cloud_filter_exit(pf);
J
Jesse Brandeburg 已提交
13223 13224 13225 13226 13227 13228
			i40e_fdir_teardown(pf);
			return -EAGAIN;
		}
	} else {
		/* force a reset of TC and queue layout configurations */
		u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
J
Jesse Brandeburg 已提交
13229

J
Jesse Brandeburg 已提交
13230 13231 13232 13233 13234 13235
		pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
		pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
		i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
	}
	i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);

13236 13237
	i40e_fdir_sb_setup(pf);

J
Jesse Brandeburg 已提交
13238 13239 13240 13241 13242 13243 13244 13245 13246 13247 13248 13249
	/* Setup static PF queue filter control settings */
	ret = i40e_setup_pf_filter_control(pf);
	if (ret) {
		dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
			 ret);
		/* Failure here should not stop continuing other steps */
	}

	/* enable RSS in the HW, even for only one queue, as the stack can use
	 * the hash
	 */
	if ((pf->flags & I40E_FLAG_RSS_ENABLED))
13250
		i40e_pf_config_rss(pf);
J
Jesse Brandeburg 已提交
13251 13252

	/* fill in link information and enable LSE reporting */
13253 13254
	i40e_link_event(pf);

13255
	/* Initialize user-specific link properties */
J
Jesse Brandeburg 已提交
13256 13257
	pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
				  I40E_AQ_AN_COMPLETED) ? true : false);
13258

J
Jacob Keller 已提交
13259 13260
	i40e_ptp_init(pf);

13261 13262 13263
	/* repopulate tunnel port filters */
	i40e_sync_udp_filters(pf);

J
Jesse Brandeburg 已提交
13264 13265 13266 13267 13268 13269 13270 13271 13272 13273
	return ret;
}

/**
 * i40e_determine_queue_usage - Work out queue distribution
 * @pf: board private structure
 **/
static void i40e_determine_queue_usage(struct i40e_pf *pf)
{
	int queues_left;
13274
	int q_max;
J
Jesse Brandeburg 已提交
13275 13276 13277 13278 13279 13280 13281 13282 13283

	pf->num_lan_qps = 0;

	/* Find the max queues to be put into basic use.  We'll always be
	 * using TC0, whether or not DCB is running, and TC0 will get the
	 * big RSS set.
	 */
	queues_left = pf->hw.func_caps.num_tx_qp;

13284
	if ((queues_left == 1) ||
13285
	    !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
J
Jesse Brandeburg 已提交
13286 13287
		/* one qp for PF, no queues for anything else */
		queues_left = 0;
13288
		pf->alloc_rss_size = pf->num_lan_qps = 1;
J
Jesse Brandeburg 已提交
13289 13290

		/* make sure all the fancies are disabled */
J
Jesse Brandeburg 已提交
13291
		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
13292
			       I40E_FLAG_IWARP_ENABLED	|
J
Jesse Brandeburg 已提交
13293 13294
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
13295
			       I40E_FLAG_DCB_CAPABLE	|
13296
			       I40E_FLAG_DCB_ENABLED	|
J
Jesse Brandeburg 已提交
13297 13298
			       I40E_FLAG_SRIOV_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
13299
		pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
13300 13301
	} else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
				  I40E_FLAG_FD_SB_ENABLED |
13302
				  I40E_FLAG_FD_ATR_ENABLED |
13303
				  I40E_FLAG_DCB_CAPABLE))) {
13304
		/* one qp for PF */
13305
		pf->alloc_rss_size = pf->num_lan_qps = 1;
13306 13307 13308
		queues_left -= pf->num_lan_qps;

		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
13309
			       I40E_FLAG_IWARP_ENABLED	|
13310 13311 13312 13313
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
			       I40E_FLAG_DCB_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
13314
		pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
J
Jesse Brandeburg 已提交
13315
	} else {
13316
		/* Not enough queues for all TCs */
13317
		if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
13318
		    (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
13319 13320
			pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
					I40E_FLAG_DCB_ENABLED);
13321 13322
			dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
		}
13323 13324 13325 13326 13327 13328

		/* limit lan qps to the smaller of qps, cpus or msix */
		q_max = max_t(int, pf->rss_size_max, num_online_cpus());
		q_max = min_t(int, q_max, pf->hw.func_caps.num_tx_qp);
		q_max = min_t(int, q_max, pf->hw.func_caps.num_msix_vectors);
		pf->num_lan_qps = q_max;
13329

13330 13331 13332 13333 13334 13335 13336 13337
		queues_left -= pf->num_lan_qps;
	}

	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		if (queues_left > 1) {
			queues_left -= 1; /* save 1 queue for FD */
		} else {
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
13338
			pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
13339 13340
			dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
		}
J
Jesse Brandeburg 已提交
13341 13342 13343 13344
	}

	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    pf->num_vf_qps && pf->num_req_vfs && queues_left) {
13345 13346
		pf->num_req_vfs = min_t(int, pf->num_req_vfs,
					(queues_left / pf->num_vf_qps));
J
Jesse Brandeburg 已提交
13347 13348 13349 13350 13351 13352 13353 13354 13355 13356
		queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
	}

	if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
	    pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
		pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
					  (queues_left / pf->num_vmdq_qps));
		queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
	}

13357
	pf->queues_left = queues_left;
13358 13359 13360 13361
	dev_dbg(&pf->pdev->dev,
		"qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
		pf->hw.func_caps.num_tx_qp,
		!!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
13362 13363 13364
		pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
		pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
		queues_left);
J
Jesse Brandeburg 已提交
13365 13366 13367 13368 13369 13370
}

/**
 * i40e_setup_pf_filter_control - Setup PF static filter control
 * @pf: PF to be setup
 *
13371
 * i40e_setup_pf_filter_control sets up a PF's initial filter control
J
Jesse Brandeburg 已提交
13372 13373 13374 13375 13376 13377 13378 13379 13380 13381 13382 13383 13384
 * settings. If PE/FCoE are enabled then it will also set the per PF
 * based filter sizes required for them. It also enables Flow director,
 * ethertype and macvlan type filter settings for the pf.
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
{
	struct i40e_filter_control_settings *settings = &pf->filter_settings;

	settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;

	/* Flow Director is enabled */
J
Jesse Brandeburg 已提交
13385
	if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
J
Jesse Brandeburg 已提交
13386 13387 13388 13389 13390 13391 13392 13393 13394 13395 13396 13397
		settings->enable_fdir = true;

	/* Ethtype and MACVLAN filters enabled for PF */
	settings->enable_ethtype = true;
	settings->enable_macvlan = true;

	if (i40e_set_filter_control(&pf->hw, settings))
		return -ENOENT;

	return 0;
}

J
Jesse Brandeburg 已提交
13398
#define INFO_STRING_LEN 255
13399
#define REMAIN(__x) (INFO_STRING_LEN - (__x))
J
Jesse Brandeburg 已提交
13400 13401 13402
static void i40e_print_features(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
13403 13404
	char *buf;
	int i;
J
Jesse Brandeburg 已提交
13405

13406 13407
	buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
	if (!buf)
J
Jesse Brandeburg 已提交
13408 13409
		return;

13410
	i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
J
Jesse Brandeburg 已提交
13411
#ifdef CONFIG_PCI_IOV
13412
	i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
J
Jesse Brandeburg 已提交
13413
#endif
13414
	i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
13415
		      pf->hw.func_caps.num_vsis,
13416
		      pf->vsi[pf->lan_vsi]->num_queue_pairs);
J
Jesse Brandeburg 已提交
13417
	if (pf->flags & I40E_FLAG_RSS_ENABLED)
13418
		i += snprintf(&buf[i], REMAIN(i), " RSS");
J
Jesse Brandeburg 已提交
13419
	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
13420
		i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
13421
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
13422 13423
		i += snprintf(&buf[i], REMAIN(i), " FD_SB");
		i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
13424
	}
13425
	if (pf->flags & I40E_FLAG_DCB_CAPABLE)
13426 13427
		i += snprintf(&buf[i], REMAIN(i), " DCB");
	i += snprintf(&buf[i], REMAIN(i), " VxLAN");
13428
	i += snprintf(&buf[i], REMAIN(i), " Geneve");
J
Jesse Brandeburg 已提交
13429
	if (pf->flags & I40E_FLAG_PTP)
13430
		i += snprintf(&buf[i], REMAIN(i), " PTP");
13431
	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
13432
		i += snprintf(&buf[i], REMAIN(i), " VEB");
13433
	else
13434
		i += snprintf(&buf[i], REMAIN(i), " VEPA");
J
Jesse Brandeburg 已提交
13435

13436 13437
	dev_info(&pf->pdev->dev, "%s\n", buf);
	kfree(buf);
13438
	WARN_ON(i > INFO_STRING_LEN);
J
Jesse Brandeburg 已提交
13439 13440
}

13441 13442 13443 13444 13445
/**
 * i40e_get_platform_mac_addr - get platform-specific MAC address
 * @pdev: PCI device information struct
 * @pf: board private structure
 *
13446 13447 13448 13449
 * Look up the MAC address for the device. First we'll try
 * eth_platform_get_mac_address, which will check Open Firmware, or arch
 * specific fallback. Otherwise, we'll default to the stored value in
 * firmware.
13450 13451 13452
 **/
static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
{
13453 13454
	if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
		i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
13455 13456
}

J
Jesse Brandeburg 已提交
13457 13458 13459 13460 13461
/**
 * i40e_probe - Device initialization routine
 * @pdev: PCI device information struct
 * @ent: entry in i40e_pci_tbl
 *
13462 13463
 * i40e_probe initializes a PF identified by a pci_dev structure.
 * The OS initialization, configuring of the PF private structure,
J
Jesse Brandeburg 已提交
13464 13465 13466 13467 13468 13469
 * and a hardware reset occur.
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
13470
	struct i40e_aq_get_phy_abilities_resp abilities;
J
Jesse Brandeburg 已提交
13471 13472
	struct i40e_pf *pf;
	struct i40e_hw *hw;
13473
	static u16 pfs_found;
13474
	u16 wol_nvm_bits;
13475
	u16 link_status;
13476
	int err;
13477
	u32 val;
13478
	u32 i;
13479
	u8 set_fc_aq_fail;
J
Jesse Brandeburg 已提交
13480 13481 13482 13483 13484 13485

	err = pci_enable_device_mem(pdev);
	if (err)
		return err;

	/* set up for high or low dma */
13486 13487
	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
	if (err) {
13488 13489 13490 13491 13492 13493
		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
		if (err) {
			dev_err(&pdev->dev,
				"DMA configuration failed: 0x%x\n", err);
			goto err_dma;
		}
J
Jesse Brandeburg 已提交
13494 13495 13496
	}

	/* set up pci connections */
13497
	err = pci_request_mem_regions(pdev, i40e_driver_name);
J
Jesse Brandeburg 已提交
13498 13499 13500 13501 13502 13503 13504 13505 13506 13507 13508 13509 13510 13511 13512 13513 13514 13515 13516 13517 13518
	if (err) {
		dev_info(&pdev->dev,
			 "pci_request_selected_regions failed %d\n", err);
		goto err_pci_reg;
	}

	pci_enable_pcie_error_reporting(pdev);
	pci_set_master(pdev);

	/* Now that we have a PCI connection, we need to do the
	 * low level device setup.  This is primarily setting up
	 * the Admin Queue structures and then querying for the
	 * device's current profile information.
	 */
	pf = kzalloc(sizeof(*pf), GFP_KERNEL);
	if (!pf) {
		err = -ENOMEM;
		goto err_pf_alloc;
	}
	pf->next_vsi = 0;
	pf->pdev = pdev;
13519
	set_bit(__I40E_DOWN, pf->state);
J
Jesse Brandeburg 已提交
13520 13521 13522

	hw = &pf->hw;
	hw->back = pf;
A
Anjali Singhai 已提交
13523

S
Shannon Nelson 已提交
13524 13525
	pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
				I40E_MAX_CSR_SPACE);
A
Anjali Singhai 已提交
13526

S
Shannon Nelson 已提交
13527
	hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
J
Jesse Brandeburg 已提交
13528 13529 13530 13531
	if (!hw->hw_addr) {
		err = -EIO;
		dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
			 (unsigned int)pci_resource_start(pdev, 0),
S
Shannon Nelson 已提交
13532
			 pf->ioremap_len, err);
J
Jesse Brandeburg 已提交
13533 13534 13535 13536 13537 13538 13539 13540 13541
		goto err_ioremap;
	}
	hw->vendor_id = pdev->vendor;
	hw->device_id = pdev->device;
	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
	hw->subsystem_vendor_id = pdev->subsystem_vendor;
	hw->subsystem_device_id = pdev->subsystem_device;
	hw->bus.device = PCI_SLOT(pdev->devfn);
	hw->bus.func = PCI_FUNC(pdev->devfn);
13542
	hw->bus.bus_id = pdev->bus->number;
13543
	pf->instance = pfs_found;
J
Jesse Brandeburg 已提交
13544

13545 13546 13547 13548 13549 13550 13551
	/* Select something other than the 802.1ad ethertype for the
	 * switch to use internally and drop on ingress.
	 */
	hw->switch_tag = 0xffff;
	hw->first_tag = ETH_P_8021AD;
	hw->second_tag = ETH_P_8021Q;

13552 13553 13554
	INIT_LIST_HEAD(&pf->l3_flex_pit_list);
	INIT_LIST_HEAD(&pf->l4_flex_pit_list);

13555 13556 13557 13558 13559 13560
	/* set up the locks for the AQ, do this only once in probe
	 * and destroy them only once in remove
	 */
	mutex_init(&hw->aq.asq_mutex);
	mutex_init(&hw->aq.arq_mutex);

13561 13562 13563 13564 13565 13566
	pf->msg_enable = netif_msg_init(debug,
					NETIF_MSG_DRV |
					NETIF_MSG_PROBE |
					NETIF_MSG_LINK);
	if (debug < -1)
		pf->hw.debug_mask = debug;
S
Shannon Nelson 已提交
13567

13568 13569 13570 13571 13572 13573 13574 13575 13576 13577 13578
	/* do a special CORER for clearing PXE mode once at init */
	if (hw->revision_id == 0 &&
	    (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
		wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
		i40e_flush(hw);
		msleep(200);
		pf->corer_count++;

		i40e_clear_pxe_mode(hw);
	}

J
Jesse Brandeburg 已提交
13579
	/* Reset here to make sure all is clean and to define PF 'n' */
13580
	i40e_clear_hw(hw);
J
Jesse Brandeburg 已提交
13581 13582 13583 13584 13585 13586 13587 13588 13589 13590 13591 13592
	err = i40e_pf_reset(hw);
	if (err) {
		dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
		goto err_pf_reset;
	}
	pf->pfr_count++;

	hw->aq.num_arq_entries = I40E_AQ_LEN;
	hw->aq.num_asq_entries = I40E_AQ_LEN;
	hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
	hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
	pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
13593

13594
	snprintf(pf->int_name, sizeof(pf->int_name) - 1,
13595 13596
		 "%s-%s:misc",
		 dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
J
Jesse Brandeburg 已提交
13597 13598 13599

	err = i40e_init_shared_code(hw);
	if (err) {
13600 13601
		dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
			 err);
J
Jesse Brandeburg 已提交
13602 13603 13604
		goto err_pf_reset;
	}

13605 13606 13607
	/* set up a default setting for link flow control */
	pf->hw.fc.requested_mode = I40E_FC_NONE;

J
Jesse Brandeburg 已提交
13608
	err = i40e_init_adminq(hw);
C
Carolyn Wyborny 已提交
13609 13610 13611 13612 13613 13614 13615 13616 13617 13618
	if (err) {
		if (err == I40E_ERR_FIRMWARE_API_VERSION)
			dev_info(&pdev->dev,
				 "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
		else
			dev_info(&pdev->dev,
				 "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");

		goto err_pf_reset;
	}
13619
	i40e_get_oem_version(hw);
13620

13621 13622 13623 13624 13625
	/* provide nvm, fw, api versions */
	dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
		 hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
		 hw->aq.api_maj_ver, hw->aq.api_min_ver,
		 i40e_nvm_version_str(hw));
13626

13627
	if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
13628
	    hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
13629
		dev_info(&pdev->dev,
13630
			 "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
13631
	else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
13632
		dev_info(&pdev->dev,
13633
			 "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
13634

13635 13636
	i40e_verify_eeprom(pf);

13637 13638 13639 13640
	/* Rev 0 hardware was never productized */
	if (hw->revision_id < 1)
		dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");

13641
	i40e_clear_pxe_mode(hw);
13642
	err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
J
Jesse Brandeburg 已提交
13643 13644 13645 13646 13647 13648 13649 13650 13651 13652
	if (err)
		goto err_adminq_setup;

	err = i40e_sw_init(pf);
	if (err) {
		dev_info(&pdev->dev, "sw_init failed: %d\n", err);
		goto err_sw_init;
	}

	err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
13653
				hw->func_caps.num_rx_qp, 0, 0);
J
Jesse Brandeburg 已提交
13654 13655 13656 13657 13658 13659 13660 13661 13662 13663 13664 13665
	if (err) {
		dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
		goto err_init_lan_hmc;
	}

	err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
	if (err) {
		dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
		err = -ENOENT;
		goto err_configure_lan_hmc;
	}

13666 13667 13668 13669
	/* Disable LLDP for NICs that have firmware versions lower than v4.3.
	 * Ignore error return codes because if it was already disabled via
	 * hardware settings this will fail
	 */
13670
	if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
13671 13672 13673 13674
		dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
		i40e_aq_stop_lldp(hw, true, NULL);
	}

13675 13676
	/* allow a platform config to override the HW addr */
	i40e_get_platform_mac_addr(pdev, pf);
13677

13678
	if (!is_valid_ether_addr(hw->mac.addr)) {
J
Jesse Brandeburg 已提交
13679 13680 13681 13682 13683
		dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
		err = -EIO;
		goto err_mac_addr;
	}
	dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
13684
	ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
13685 13686
	i40e_get_port_mac_addr(hw, hw->mac.port_addr);
	if (is_valid_ether_addr(hw->mac.port_addr))
13687
		pf->hw_features |= I40E_HW_PORT_ID_VALID;
J
Jesse Brandeburg 已提交
13688 13689 13690

	pci_set_drvdata(pdev, pf);
	pci_save_state(pdev);
13691 13692 13693 13694

	/* Enable FW to write default DCB config on link-up */
	i40e_aq_set_dcb_parameters(hw, true, NULL);

N
Neerav Parikh 已提交
13695 13696 13697
#ifdef CONFIG_I40E_DCB
	err = i40e_init_pf_dcb(pf);
	if (err) {
13698
		dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
13699
		pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
13700
		/* Continue without DCB enabled */
N
Neerav Parikh 已提交
13701 13702
	}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
13703 13704

	/* set up periodic task facility */
13705
	timer_setup(&pf->service_timer, i40e_service_timer, 0);
J
Jesse Brandeburg 已提交
13706 13707 13708
	pf->service_timer_period = HZ;

	INIT_WORK(&pf->service_task, i40e_service_task);
13709
	clear_bit(__I40E_SERVICE_SCHED, pf->state);
J
Jesse Brandeburg 已提交
13710

13711 13712
	/* NVM bit on means WoL disabled for the port */
	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
J
Jesse Brandeburg 已提交
13713
	if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
13714 13715 13716
		pf->wol_en = false;
	else
		pf->wol_en = true;
S
Shannon Nelson 已提交
13717 13718
	device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);

J
Jesse Brandeburg 已提交
13719 13720
	/* set up the main switch operations */
	i40e_determine_queue_usage(pf);
13721 13722 13723
	err = i40e_init_interrupt_scheme(pf);
	if (err)
		goto err_switch_setup;
J
Jesse Brandeburg 已提交
13724

M
Mitch Williams 已提交
13725 13726 13727 13728
	/* The number of VSIs reported by the FW is the minimum guaranteed
	 * to us; HW supports far more and we share the remaining pool with
	 * the other PFs. We allocate space for more than the guarantee with
	 * the understanding that we might not get them all later.
J
Jesse Brandeburg 已提交
13729
	 */
M
Mitch Williams 已提交
13730 13731 13732 13733 13734 13735
	if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
		pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
	else
		pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;

	/* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
13736 13737
	pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
			  GFP_KERNEL);
13738 13739
	if (!pf->vsi) {
		err = -ENOMEM;
J
Jesse Brandeburg 已提交
13740
		goto err_switch_setup;
13741
	}
J
Jesse Brandeburg 已提交
13742

13743 13744 13745 13746
#ifdef CONFIG_PCI_IOV
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
13747
	    !test_bit(__I40E_BAD_EEPROM, pf->state)) {
13748 13749 13750 13751
		if (pci_num_vf(pdev))
			pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
	}
#endif
13752
	err = i40e_setup_pf_switch(pf, false);
J
Jesse Brandeburg 已提交
13753 13754 13755 13756
	if (err) {
		dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
		goto err_vsis;
	}
13757
	INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
13758 13759 13760 13761 13762 13763 13764 13765 13766 13767 13768 13769 13770 13771 13772 13773 13774 13775 13776

	/* Make sure flow control is set according to current settings */
	err = i40e_set_fc(hw, &set_fc_aq_fail, true);
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on get_phy_cap\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on set_phy_config\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on get_link_info\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));

13777
	/* if FDIR VSI was set up, start it now */
M
Mitch Williams 已提交
13778
	for (i = 0; i < pf->num_alloc_vsi; i++) {
13779 13780 13781 13782 13783
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
			i40e_vsi_open(pf->vsi[i]);
			break;
		}
	}
J
Jesse Brandeburg 已提交
13784

S
Shannon Nelson 已提交
13785 13786
	/* The driver only wants link up/down and module qualification
	 * reports from firmware.  Note the negative logic.
J
Jesse Brandeburg 已提交
13787 13788
	 */
	err = i40e_aq_set_phy_int_mask(&pf->hw,
S
Shannon Nelson 已提交
13789
				       ~(I40E_AQ_EVENT_LINK_UPDOWN |
13790
					 I40E_AQ_EVENT_MEDIA_NA |
S
Shannon Nelson 已提交
13791
					 I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
J
Jesse Brandeburg 已提交
13792
	if (err)
13793 13794 13795
		dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, err),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
13796

13797 13798 13799 13800 13801 13802 13803 13804 13805 13806 13807
	/* Reconfigure hardware for allowing smaller MSS in the case
	 * of TSO, so that we avoid the MDD being fired and causing
	 * a reset in the case of small MSS+TSO.
	 */
	val = rd32(hw, I40E_REG_MSS);
	if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
		val &= ~I40E_REG_MSS_MIN_MASK;
		val |= I40E_64BYTE_MSS;
		wr32(hw, I40E_REG_MSS, val);
	}

13808
	if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
13809 13810 13811
		msleep(75);
		err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
		if (err)
13812 13813 13814 13815
			dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, err),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
13816
	}
J
Jesse Brandeburg 已提交
13817 13818 13819 13820
	/* The main driver is (mostly) up and happy. We need to set this state
	 * before setting up the misc vector or we get a race and the vector
	 * ends up disabled forever.
	 */
13821
	clear_bit(__I40E_DOWN, pf->state);
J
Jesse Brandeburg 已提交
13822 13823 13824 13825 13826 13827 13828 13829 13830 13831 13832 13833 13834 13835 13836

	/* In case of MSIX we are going to setup the misc vector right here
	 * to handle admin queue events etc. In case of legacy and MSI
	 * the misc functionality and queue processing is combined in
	 * the same vector and that gets setup at open.
	 */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		err = i40e_setup_misc_vector(pf);
		if (err) {
			dev_info(&pdev->dev,
				 "setup of misc vector failed: %d\n", err);
			goto err_vsis;
		}
	}

13837
#ifdef CONFIG_PCI_IOV
J
Jesse Brandeburg 已提交
13838 13839
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
13840
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
13841
	    !test_bit(__I40E_BAD_EEPROM, pf->state)) {
J
Jesse Brandeburg 已提交
13842 13843 13844 13845 13846
		/* disable link interrupts for VFs */
		val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
		val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
		wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
		i40e_flush(hw);
M
Mitch Williams 已提交
13847 13848 13849 13850 13851 13852 13853 13854 13855 13856

		if (pci_num_vf(pdev)) {
			dev_info(&pdev->dev,
				 "Active VFs found, allocating resources.\n");
			err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
			if (err)
				dev_info(&pdev->dev,
					 "Error %d allocating resources for existing VFs\n",
					 err);
		}
J
Jesse Brandeburg 已提交
13857
	}
13858
#endif /* CONFIG_PCI_IOV */
J
Jesse Brandeburg 已提交
13859

13860 13861 13862 13863 13864 13865 13866 13867 13868 13869 13870
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
						      pf->num_iwarp_msix,
						      I40E_IWARP_IRQ_PILE_ID);
		if (pf->iwarp_base_vector < 0) {
			dev_info(&pdev->dev,
				 "failed to get tracking for %d vectors for IWARP err=%d\n",
				 pf->num_iwarp_msix, pf->iwarp_base_vector);
			pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
		}
	}
13871

J
Jesse Brandeburg 已提交
13872 13873 13874
	i40e_dbg_pf_init(pf);

	/* tell the firmware that we're starting */
J
Jesse Brandeburg 已提交
13875
	i40e_send_version(pf);
J
Jesse Brandeburg 已提交
13876 13877 13878 13879 13880

	/* since everything's happy, start the service_task timer */
	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));

13881
	/* add this PF to client device list and launch a client service task */
13882 13883 13884 13885 13886 13887
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		err = i40e_lan_add_device(pf);
		if (err)
			dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
				 err);
	}
13888

13889 13890 13891 13892 13893 13894
#define PCI_SPEED_SIZE 8
#define PCI_WIDTH_SIZE 8
	/* Devices on the IOSF bus do not have this information
	 * and will report PCI Gen 1 x 1 by default so don't bother
	 * checking them.
	 */
13895
	if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
13896 13897 13898 13899 13900 13901 13902 13903 13904 13905 13906 13907 13908 13909 13910 13911 13912 13913 13914 13915 13916 13917 13918 13919 13920 13921 13922 13923 13924 13925 13926 13927 13928 13929 13930 13931 13932 13933 13934 13935 13936 13937
		char speed[PCI_SPEED_SIZE] = "Unknown";
		char width[PCI_WIDTH_SIZE] = "Unknown";

		/* Get the negotiated link width and speed from PCI config
		 * space
		 */
		pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
					  &link_status);

		i40e_set_pci_config_data(hw, link_status);

		switch (hw->bus.speed) {
		case i40e_bus_speed_8000:
			strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
		case i40e_bus_speed_5000:
			strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
		case i40e_bus_speed_2500:
			strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
		default:
			break;
		}
		switch (hw->bus.width) {
		case i40e_bus_width_pcie_x8:
			strncpy(width, "8", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x4:
			strncpy(width, "4", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x2:
			strncpy(width, "2", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x1:
			strncpy(width, "1", PCI_WIDTH_SIZE); break;
		default:
			break;
		}

		dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
			 speed, width);

		if (hw->bus.width < i40e_bus_width_pcie_x8 ||
		    hw->bus.speed < i40e_bus_speed_8000) {
			dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
			dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
		}
13938 13939
	}

13940 13941 13942
	/* get the requested speeds from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
	if (err)
13943 13944 13945
		dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
13946 13947
	pf->hw.phy.link_info.requested_speeds = abilities.link_speed;

13948 13949 13950 13951 13952 13953 13954
	/* get the supported phy types from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
	if (err)
		dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));

13955 13956 13957 13958 13959 13960 13961 13962 13963
	/* Add a filter to drop all Flow control frames from any VSI from being
	 * transmitted. By doing so we stop a malicious VF from sending out
	 * PAUSE or PFC frames and potentially controlling traffic for other
	 * PF/VF VSIs.
	 * The FW can still send Flow control frames if enabled.
	 */
	i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
						       pf->main_vsi_seid);

13964
	if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
H
Henry Tieman 已提交
13965
		(pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
13966
		pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
13967
	if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
13968
		pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
J
Jesse Brandeburg 已提交
13969 13970 13971
	/* print a string summarizing features */
	i40e_print_features(pf);

J
Jesse Brandeburg 已提交
13972 13973 13974 13975
	return 0;

	/* Unwind what we've done if something failed in the setup */
err_vsis:
13976
	set_bit(__I40E_DOWN, pf->state);
J
Jesse Brandeburg 已提交
13977 13978
	i40e_clear_interrupt_scheme(pf);
	kfree(pf->vsi);
13979 13980
err_switch_setup:
	i40e_reset_interrupt_capability(pf);
J
Jesse Brandeburg 已提交
13981 13982 13983 13984 13985 13986 13987 13988 13989 13990 13991 13992 13993 13994
	del_timer_sync(&pf->service_timer);
err_mac_addr:
err_configure_lan_hmc:
	(void)i40e_shutdown_lan_hmc(hw);
err_init_lan_hmc:
	kfree(pf->qp_pile);
err_sw_init:
err_adminq_setup:
err_pf_reset:
	iounmap(hw->hw_addr);
err_ioremap:
	kfree(pf);
err_pf_alloc:
	pci_disable_pcie_error_reporting(pdev);
13995
	pci_release_mem_regions(pdev);
J
Jesse Brandeburg 已提交
13996 13997 13998 13999 14000 14001 14002 14003 14004 14005 14006 14007 14008 14009 14010 14011 14012 14013
err_pci_reg:
err_dma:
	pci_disable_device(pdev);
	return err;
}

/**
 * i40e_remove - Device removal routine
 * @pdev: PCI device information struct
 *
 * i40e_remove is called by the PCI subsystem to alert the driver
 * that is should release a PCI device.  This could be caused by a
 * Hot-Plug event, or because the driver is going to be removed from
 * memory.
 **/
static void i40e_remove(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
14014
	struct i40e_hw *hw = &pf->hw;
J
Jesse Brandeburg 已提交
14015 14016 14017 14018 14019
	i40e_status ret_code;
	int i;

	i40e_dbg_pf_exit(pf);

J
Jacob Keller 已提交
14020 14021
	i40e_ptp_stop(pf);

14022
	/* Disable RSS in hw */
14023 14024
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
14025

J
Jesse Brandeburg 已提交
14026
	/* no more scheduling of any task */
14027
	set_bit(__I40E_SUSPENDED, pf->state);
14028
	set_bit(__I40E_DOWN, pf->state);
14029
	if (pf->service_timer.function)
14030 14031 14032
		del_timer_sync(&pf->service_timer);
	if (pf->service_task.func)
		cancel_work_sync(&pf->service_task);
J
Jesse Brandeburg 已提交
14033

14034 14035 14036 14037 14038
	/* Client close must be called explicitly here because the timer
	 * has been stopped.
	 */
	i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);

14039 14040 14041 14042 14043
	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
		i40e_free_vfs(pf);
		pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
	}

J
Jesse Brandeburg 已提交
14044 14045 14046 14047 14048 14049 14050 14051 14052 14053 14054 14055 14056 14057 14058 14059 14060 14061 14062 14063
	i40e_fdir_teardown(pf);

	/* If there is a switch structure or any orphans, remove them.
	 * This will leave only the PF's VSI remaining.
	 */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;

		if (pf->veb[i]->uplink_seid == pf->mac_seid ||
		    pf->veb[i]->uplink_seid == 0)
			i40e_switch_branch_release(pf->veb[i]);
	}

	/* Now we can shutdown the PF's VSI, just before we kill
	 * adminq and hmc.
	 */
	if (pf->vsi[pf->lan_vsi])
		i40e_vsi_release(pf->vsi[pf->lan_vsi]);

A
Amritha Nambiar 已提交
14064 14065
	i40e_cloud_filter_exit(pf);

14066
	/* remove attached clients */
14067 14068 14069 14070 14071
	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
		ret_code = i40e_lan_del_device(pf);
		if (ret_code)
			dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
				 ret_code);
14072 14073
	}

J
Jesse Brandeburg 已提交
14074
	/* shutdown and destroy the HMC */
14075 14076
	if (hw->hmc.hmc_obj) {
		ret_code = i40e_shutdown_lan_hmc(hw);
14077 14078 14079 14080 14081
		if (ret_code)
			dev_warn(&pdev->dev,
				 "Failed to destroy the HMC resources: %d\n",
				 ret_code);
	}
J
Jesse Brandeburg 已提交
14082 14083

	/* shutdown the adminq */
H
Henry Tieman 已提交
14084
	i40e_shutdown_adminq(hw);
J
Jesse Brandeburg 已提交
14085

14086 14087 14088 14089
	/* destroy the locks only once, here */
	mutex_destroy(&hw->aq.arq_mutex);
	mutex_destroy(&hw->aq.asq_mutex);

J
Jesse Brandeburg 已提交
14090 14091
	/* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
	i40e_clear_interrupt_scheme(pf);
M
Mitch Williams 已提交
14092
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
14093 14094 14095 14096 14097 14098 14099 14100 14101 14102 14103 14104 14105 14106 14107
		if (pf->vsi[i]) {
			i40e_vsi_clear_rings(pf->vsi[i]);
			i40e_vsi_clear(pf->vsi[i]);
			pf->vsi[i] = NULL;
		}
	}

	for (i = 0; i < I40E_MAX_VEB; i++) {
		kfree(pf->veb[i]);
		pf->veb[i] = NULL;
	}

	kfree(pf->qp_pile);
	kfree(pf->vsi);

14108
	iounmap(hw->hw_addr);
J
Jesse Brandeburg 已提交
14109
	kfree(pf);
14110
	pci_release_mem_regions(pdev);
J
Jesse Brandeburg 已提交
14111 14112 14113 14114 14115 14116 14117 14118 14119 14120 14121 14122 14123 14124 14125 14126 14127 14128 14129 14130

	pci_disable_pcie_error_reporting(pdev);
	pci_disable_device(pdev);
}

/**
 * i40e_pci_error_detected - warning that something funky happened in PCI land
 * @pdev: PCI device information struct
 *
 * Called to warn that something happened and the error handling steps
 * are in progress.  Allows the driver to quiesce things, be ready for
 * remediation.
 **/
static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
						enum pci_channel_state error)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	dev_info(&pdev->dev, "%s: error %d\n", __func__, error);

14131 14132 14133 14134 14135 14136
	if (!pf) {
		dev_info(&pdev->dev,
			 "Cannot recover - error happened during device probe\n");
		return PCI_ERS_RESULT_DISCONNECT;
	}

J
Jesse Brandeburg 已提交
14137
	/* shutdown all operations */
14138 14139
	if (!test_bit(__I40E_SUSPENDED, pf->state))
		i40e_prep_for_reset(pf, false);
J
Jesse Brandeburg 已提交
14140 14141 14142 14143 14144 14145 14146 14147 14148 14149 14150 14151 14152 14153 14154 14155 14156 14157 14158 14159 14160

	/* Request a slot reset */
	return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * i40e_pci_error_slot_reset - a PCI slot reset just happened
 * @pdev: PCI device information struct
 *
 * Called to find if the driver can work with the device now that
 * the pci slot has been reset.  If a basic connection seems good
 * (registers are readable and have sane content) then return a
 * happy little PCI_ERS_RESULT_xxx.
 **/
static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
	pci_ers_result_t result;
	int err;
	u32 reg;

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Shannon Nelson 已提交
14161
	dev_dbg(&pdev->dev, "%s\n", __func__);
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Jesse Brandeburg 已提交
14162 14163 14164 14165 14166 14167 14168 14169 14170 14171 14172 14173 14174 14175 14176 14177 14178 14179 14180 14181 14182 14183 14184 14185 14186 14187 14188 14189
	if (pci_enable_device_mem(pdev)) {
		dev_info(&pdev->dev,
			 "Cannot re-enable PCI device after reset.\n");
		result = PCI_ERS_RESULT_DISCONNECT;
	} else {
		pci_set_master(pdev);
		pci_restore_state(pdev);
		pci_save_state(pdev);
		pci_wake_from_d3(pdev, false);

		reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		if (reg == 0)
			result = PCI_ERS_RESULT_RECOVERED;
		else
			result = PCI_ERS_RESULT_DISCONNECT;
	}

	err = pci_cleanup_aer_uncorrect_error_status(pdev);
	if (err) {
		dev_info(&pdev->dev,
			 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
			 err);
		/* non-fatal, continue */
	}

	return result;
}

14190 14191 14192 14193 14194 14195 14196 14197 14198 14199 14200 14201 14202 14203 14204 14205 14206 14207 14208 14209 14210 14211
/**
 * i40e_pci_error_reset_prepare - prepare device driver for pci reset
 * @pdev: PCI device information struct
 */
static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	i40e_prep_for_reset(pf, false);
}

/**
 * i40e_pci_error_reset_done - pci reset done, device driver reset can begin
 * @pdev: PCI device information struct
 */
static void i40e_pci_error_reset_done(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	i40e_reset_and_rebuild(pf, false, false);
}

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Jesse Brandeburg 已提交
14212 14213 14214 14215 14216 14217 14218 14219 14220 14221 14222
/**
 * i40e_pci_error_resume - restart operations after PCI error recovery
 * @pdev: PCI device information struct
 *
 * Called to allow the driver to bring things back up after PCI error
 * and/or reset recovery has finished.
 **/
static void i40e_pci_error_resume(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

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Shannon Nelson 已提交
14223
	dev_dbg(&pdev->dev, "%s\n", __func__);
14224
	if (test_bit(__I40E_SUSPENDED, pf->state))
14225 14226
		return;

14227
	i40e_handle_reset_warning(pf, false);
14228 14229
}

14230 14231 14232 14233 14234 14235 14236 14237 14238 14239 14240 14241 14242 14243 14244 14245 14246 14247 14248 14249 14250 14251 14252 14253 14254 14255 14256 14257 14258 14259 14260 14261 14262 14263 14264 14265 14266 14267 14268 14269 14270 14271 14272 14273 14274 14275 14276
/**
 * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
 * using the mac_address_write admin q function
 * @pf: pointer to i40e_pf struct
 **/
static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;
	u8 mac_addr[6];
	u16 flags = 0;

	/* Get current MAC address in case it's an LAA */
	if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
		ether_addr_copy(mac_addr,
				pf->vsi[pf->lan_vsi]->netdev->dev_addr);
	} else {
		dev_err(&pf->pdev->dev,
			"Failed to retrieve MAC address; using default\n");
		ether_addr_copy(mac_addr, hw->mac.addr);
	}

	/* The FW expects the mac address write cmd to first be called with
	 * one of these flags before calling it again with the multicast
	 * enable flags.
	 */
	flags = I40E_AQC_WRITE_TYPE_LAA_WOL;

	if (hw->func_caps.flex10_enable && hw->partition_id != 1)
		flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;

	ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
	if (ret) {
		dev_err(&pf->pdev->dev,
			"Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
		return;
	}

	flags = I40E_AQC_MC_MAG_EN
			| I40E_AQC_WOL_PRESERVE_ON_PFR
			| I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
	ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
	if (ret)
		dev_err(&pf->pdev->dev,
			"Failed to enable Multicast Magic Packet wake up\n");
}

14277 14278 14279 14280 14281 14282 14283
/**
 * i40e_shutdown - PCI callback for shutting down
 * @pdev: PCI device information struct
 **/
static void i40e_shutdown(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
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	struct i40e_hw *hw = &pf->hw;
14285

14286
	set_bit(__I40E_SUSPENDED, pf->state);
14287
	set_bit(__I40E_DOWN, pf->state);
14288
	rtnl_lock();
14289
	i40e_prep_for_reset(pf, true);
14290 14291
	rtnl_unlock();

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14292 14293 14294
	wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
	wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));

14295 14296
	del_timer_sync(&pf->service_timer);
	cancel_work_sync(&pf->service_task);
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Amritha Nambiar 已提交
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	i40e_cloud_filter_exit(pf);
14298 14299
	i40e_fdir_teardown(pf);

14300 14301 14302 14303 14304
	/* Client close must be called explicitly here because the timer
	 * has been stopped.
	 */
	i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);

14305
	if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
14306 14307
		i40e_enable_mc_magic_wake(pf);

14308
	i40e_prep_for_reset(pf, false);
14309 14310 14311 14312 14313 14314

	wr32(hw, I40E_PFPM_APM,
	     (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
	wr32(hw, I40E_PFPM_WUFC,
	     (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));

14315 14316
	i40e_clear_interrupt_scheme(pf);

14317
	if (system_state == SYSTEM_POWER_OFF) {
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Shannon Nelson 已提交
14318
		pci_wake_from_d3(pdev, pf->wol_en);
14319 14320 14321 14322 14323
		pci_set_power_state(pdev, PCI_D3hot);
	}
}

/**
14324 14325
 * i40e_suspend - PM callback for moving to D3
 * @dev: generic device information structure
14326
 **/
14327
static int __maybe_unused i40e_suspend(struct device *dev)
14328
{
14329
	struct pci_dev *pdev = to_pci_dev(dev);
14330
	struct i40e_pf *pf = pci_get_drvdata(pdev);
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Shannon Nelson 已提交
14331
	struct i40e_hw *hw = &pf->hw;
14332

14333 14334 14335 14336
	/* If we're already suspended, then there is nothing to do */
	if (test_and_set_bit(__I40E_SUSPENDED, pf->state))
		return 0;

14337
	set_bit(__I40E_DOWN, pf->state);
14338

14339 14340 14341 14342
	/* Ensure service task will not be running */
	del_timer_sync(&pf->service_timer);
	cancel_work_sync(&pf->service_task);

14343 14344 14345 14346 14347
	/* Client close must be called explicitly here because the timer
	 * has been stopped.
	 */
	i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);

14348
	if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
14349 14350
		i40e_enable_mc_magic_wake(pf);

14351 14352 14353 14354 14355 14356 14357
	/* Since we're going to destroy queues during the
	 * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
	 * whole section
	 */
	rtnl_lock();

	i40e_prep_for_reset(pf, true);
14358

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14359 14360 14361
	wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
	wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));

14362 14363 14364 14365 14366 14367
	/* Clear the interrupt scheme and release our IRQs so that the system
	 * can safely hibernate even when there are a large number of CPUs.
	 * Otherwise hibernation might fail when mapping all the vectors back
	 * to CPU0.
	 */
	i40e_clear_interrupt_scheme(pf);
14368

14369 14370
	rtnl_unlock();

14371
	return 0;
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Jesse Brandeburg 已提交
14372 14373
}

14374
/**
14375 14376
 * i40e_resume - PM callback for waking up from D3
 * @dev: generic device information structure
14377
 **/
14378
static int __maybe_unused i40e_resume(struct device *dev)
14379
{
14380
	struct pci_dev *pdev = to_pci_dev(dev);
14381
	struct i40e_pf *pf = pci_get_drvdata(pdev);
14382
	int err;
14383

14384 14385 14386
	/* If we're not suspended, then there is nothing to do */
	if (!test_bit(__I40E_SUSPENDED, pf->state))
		return 0;
14387

14388 14389 14390 14391 14392
	/* We need to hold the RTNL lock prior to restoring interrupt schemes,
	 * since we're going to be restoring queues
	 */
	rtnl_lock();

14393 14394 14395 14396
	/* We cleared the interrupt scheme when we suspended, so we need to
	 * restore it now to resume device functionality.
	 */
	err = i40e_restore_interrupt_scheme(pf);
14397
	if (err) {
14398 14399
		dev_err(&pdev->dev, "Cannot restore interrupt scheme: %d\n",
			err);
14400 14401
	}

14402
	clear_bit(__I40E_DOWN, pf->state);
14403 14404 14405
	i40e_reset_and_rebuild(pf, false, true);

	rtnl_unlock();
14406 14407 14408

	/* Clear suspended state last after everything is recovered */
	clear_bit(__I40E_SUSPENDED, pf->state);
14409

14410 14411 14412
	/* Restart the service task */
	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));
14413 14414 14415 14416

	return 0;
}

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14417 14418 14419
static const struct pci_error_handlers i40e_err_handler = {
	.error_detected = i40e_pci_error_detected,
	.slot_reset = i40e_pci_error_slot_reset,
14420 14421
	.reset_prepare = i40e_pci_error_reset_prepare,
	.reset_done = i40e_pci_error_reset_done,
J
Jesse Brandeburg 已提交
14422 14423 14424
	.resume = i40e_pci_error_resume,
};

14425 14426
static SIMPLE_DEV_PM_OPS(i40e_pm_ops, i40e_suspend, i40e_resume);

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14427 14428 14429 14430 14431
static struct pci_driver i40e_driver = {
	.name     = i40e_driver_name,
	.id_table = i40e_pci_tbl,
	.probe    = i40e_probe,
	.remove   = i40e_remove,
14432 14433 14434
	.driver   = {
		.pm = &i40e_pm_ops,
	},
14435
	.shutdown = i40e_shutdown,
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Jesse Brandeburg 已提交
14436 14437 14438 14439 14440 14441 14442 14443 14444 14445 14446 14447 14448 14449 14450
	.err_handler = &i40e_err_handler,
	.sriov_configure = i40e_pci_sriov_configure,
};

/**
 * i40e_init_module - Driver registration routine
 *
 * i40e_init_module is the first routine called when the driver is
 * loaded. All it does is register with the PCI subsystem.
 **/
static int __init i40e_init_module(void)
{
	pr_info("%s: %s - version %s\n", i40e_driver_name,
		i40e_driver_string, i40e_driver_version_str);
	pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
14451

14452 14453 14454 14455 14456 14457
	/* There is no need to throttle the number of active tasks because
	 * each device limits its own task using a state bit for scheduling
	 * the service task, and the device tasks do not interfere with each
	 * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
	 * since we need to be able to guarantee forward progress even under
	 * memory pressure.
14458
	 */
14459
	i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
14460 14461 14462 14463 14464
	if (!i40e_wq) {
		pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
		return -ENOMEM;
	}

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Jesse Brandeburg 已提交
14465 14466 14467 14468 14469 14470 14471 14472 14473 14474 14475 14476 14477 14478
	i40e_dbg_init();
	return pci_register_driver(&i40e_driver);
}
module_init(i40e_init_module);

/**
 * i40e_exit_module - Driver exit cleanup routine
 *
 * i40e_exit_module is called just before the driver is removed
 * from memory.
 **/
static void __exit i40e_exit_module(void)
{
	pci_unregister_driver(&i40e_driver);
14479
	destroy_workqueue(i40e_wq);
J
Jesse Brandeburg 已提交
14480 14481 14482
	i40e_dbg_exit();
}
module_exit(i40e_exit_module);