spectrum.c 125.4 KB
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/*
 * drivers/net/ethernet/mellanox/mlxsw/spectrum.c
 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/bitops.h>
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#include <linux/list.h>
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#include <linux/notifier.h>
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#include <linux/dcbnl.h>
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#include <linux/inetdevice.h>
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#include <net/switchdev.h>
#include <generated/utsrelease.h>
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#include <net/pkt_cls.h>
#include <net/tc_act/tc_mirred.h>
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#include <net/netevent.h>
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#include "spectrum.h"
#include "core.h"
#include "reg.h"
#include "port.h"
#include "trap.h"
#include "txheader.h"

static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
static const char mlxsw_sp_driver_version[] = "1.0";

/* tx_hdr_version
 * Tx header version.
 * Must be set to 1.
 */
MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);

/* tx_hdr_ctl
 * Packet control type.
 * 0 - Ethernet control (e.g. EMADs, LACP)
 * 1 - Ethernet data
 */
MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);

/* tx_hdr_proto
 * Packet protocol type. Must be set to 1 (Ethernet).
 */
MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);

/* tx_hdr_rx_is_router
 * Packet is sent from the router. Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);

/* tx_hdr_fid_valid
 * Indicates if the 'fid' field is valid and should be used for
 * forwarding lookup. Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);

/* tx_hdr_swid
 * Switch partition ID. Must be set to 0.
 */
MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);

/* tx_hdr_control_tclass
 * Indicates if the packet should use the control TClass and not one
 * of the data TClasses.
 */
MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);

/* tx_hdr_etclass
 * Egress TClass to be used on the egress device on the egress port.
 */
MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);

/* tx_hdr_port_mid
 * Destination local port for unicast packets.
 * Destination multicast ID for multicast packets.
 *
 * Control packets are directed to a specific egress port, while data
 * packets are transmitted through the CPU port (0) into the switch partition,
 * where forwarding rules are applied.
 */
MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);

/* tx_hdr_fid
 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
 * Valid for data packets only.
 */
MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);

/* tx_hdr_type
 * 0 - Data packets
 * 6 - Control packets
 */
MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);

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static bool mlxsw_sp_port_dev_check(const struct net_device *dev);

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static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
				     const struct mlxsw_tx_info *tx_info)
{
	char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);

	memset(txhdr, 0, MLXSW_TXHDR_LEN);

	mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
	mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
	mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
	mlxsw_tx_hdr_swid_set(txhdr, 0);
	mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
	mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
	mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
}

static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
{
	char spad_pl[MLXSW_REG_SPAD_LEN];
	int err;

	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
	if (err)
		return err;
	mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
	return 0;
}

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static int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
{
	struct mlxsw_resources *resources;
	int i;

	resources = mlxsw_core_resources_get(mlxsw_sp->core);
	if (!resources->max_span_valid)
		return -EIO;

	mlxsw_sp->span.entries_count = resources->max_span;
	mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
					 sizeof(struct mlxsw_sp_span_entry),
					 GFP_KERNEL);
	if (!mlxsw_sp->span.entries)
		return -ENOMEM;

	for (i = 0; i < mlxsw_sp->span.entries_count; i++)
		INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);

	return 0;
}

static void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
{
	int i;

	for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
		struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];

		WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
	}
	kfree(mlxsw_sp->span.entries);
}

static struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
{
	struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
	struct mlxsw_sp_span_entry *span_entry;
	char mpat_pl[MLXSW_REG_MPAT_LEN];
	u8 local_port = port->local_port;
	int index;
	int i;
	int err;

	/* find a free entry to use */
	index = -1;
	for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
		if (!mlxsw_sp->span.entries[i].used) {
			index = i;
			span_entry = &mlxsw_sp->span.entries[i];
			break;
		}
	}
	if (index < 0)
		return NULL;

	/* create a new port analayzer entry for local_port */
	mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
	if (err)
		return NULL;

	span_entry->used = true;
	span_entry->id = index;
	span_entry->ref_count = 0;
	span_entry->local_port = local_port;
	return span_entry;
}

static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
					struct mlxsw_sp_span_entry *span_entry)
{
	u8 local_port = span_entry->local_port;
	char mpat_pl[MLXSW_REG_MPAT_LEN];
	int pa_id = span_entry->id;

	mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
	span_entry->used = false;
}

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static struct mlxsw_sp_span_entry *
mlxsw_sp_span_entry_find(struct mlxsw_sp_port *port)
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{
	struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
	int i;

	for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
		struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];

		if (curr->used && curr->local_port == port->local_port)
			return curr;
	}
	return NULL;
}

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static struct mlxsw_sp_span_entry
*mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
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{
	struct mlxsw_sp_span_entry *span_entry;

	span_entry = mlxsw_sp_span_entry_find(port);
	if (span_entry) {
		span_entry->ref_count++;
		return span_entry;
	}

	return mlxsw_sp_span_entry_create(port);
}

static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
				   struct mlxsw_sp_span_entry *span_entry)
{
	if (--span_entry->ref_count == 0)
		mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
	return 0;
}

static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
{
	struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
	struct mlxsw_sp_span_inspected_port *p;
	int i;

	for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
		struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];

		list_for_each_entry(p, &curr->bound_ports_list, list)
			if (p->local_port == port->local_port &&
			    p->type == MLXSW_SP_SPAN_EGRESS)
				return true;
	}

	return false;
}

static int mlxsw_sp_span_mtu_to_buffsize(int mtu)
{
	return MLXSW_SP_BYTES_TO_CELLS(mtu * 5 / 2) + 1;
}

static int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
{
	struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
	char sbib_pl[MLXSW_REG_SBIB_LEN];
	int err;

	/* If port is egress mirrored, the shared buffer size should be
	 * updated according to the mtu value
	 */
	if (mlxsw_sp_span_is_egress_mirror(port)) {
		mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
				    mlxsw_sp_span_mtu_to_buffsize(mtu));
		err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
		if (err) {
			netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
			return err;
		}
	}

	return 0;
}

static struct mlxsw_sp_span_inspected_port *
mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
				    struct mlxsw_sp_span_entry *span_entry)
{
	struct mlxsw_sp_span_inspected_port *p;

	list_for_each_entry(p, &span_entry->bound_ports_list, list)
		if (port->local_port == p->local_port)
			return p;
	return NULL;
}

static int
mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
				  struct mlxsw_sp_span_entry *span_entry,
				  enum mlxsw_sp_span_type type)
{
	struct mlxsw_sp_span_inspected_port *inspected_port;
	struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
	char mpar_pl[MLXSW_REG_MPAR_LEN];
	char sbib_pl[MLXSW_REG_SBIB_LEN];
	int pa_id = span_entry->id;
	int err;

	/* if it is an egress SPAN, bind a shared buffer to it */
	if (type == MLXSW_SP_SPAN_EGRESS) {
		mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
				    mlxsw_sp_span_mtu_to_buffsize(port->dev->mtu));
		err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
		if (err) {
			netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
			return err;
		}
	}

	/* bind the port to the SPAN entry */
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	mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
			    (enum mlxsw_reg_mpar_i_e) type, true, pa_id);
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	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
	if (err)
		goto err_mpar_reg_write;

	inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
	if (!inspected_port) {
		err = -ENOMEM;
		goto err_inspected_port_alloc;
	}
	inspected_port->local_port = port->local_port;
	inspected_port->type = type;
	list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);

	return 0;

err_mpar_reg_write:
err_inspected_port_alloc:
	if (type == MLXSW_SP_SPAN_EGRESS) {
		mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
		mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
	}
	return err;
}

static void
mlxsw_sp_span_inspected_port_unbind(struct mlxsw_sp_port *port,
				    struct mlxsw_sp_span_entry *span_entry,
				    enum mlxsw_sp_span_type type)
{
	struct mlxsw_sp_span_inspected_port *inspected_port;
	struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
	char mpar_pl[MLXSW_REG_MPAR_LEN];
	char sbib_pl[MLXSW_REG_SBIB_LEN];
	int pa_id = span_entry->id;

	inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
	if (!inspected_port)
		return;

	/* remove the inspected port */
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	mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
			    (enum mlxsw_reg_mpar_i_e) type, false, pa_id);
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	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);

	/* remove the SBIB buffer if it was egress SPAN */
	if (type == MLXSW_SP_SPAN_EGRESS) {
		mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
		mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
	}

	mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);

	list_del(&inspected_port->list);
	kfree(inspected_port);
}

static int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
				    struct mlxsw_sp_port *to,
				    enum mlxsw_sp_span_type type)
{
	struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
	struct mlxsw_sp_span_entry *span_entry;
	int err;

	span_entry = mlxsw_sp_span_entry_get(to);
	if (!span_entry)
		return -ENOENT;

	netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
		   span_entry->id);

	err = mlxsw_sp_span_inspected_port_bind(from, span_entry, type);
	if (err)
		goto err_port_bind;

	return 0;

err_port_bind:
	mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
	return err;
}

static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from,
					struct mlxsw_sp_port *to,
					enum mlxsw_sp_span_type type)
{
	struct mlxsw_sp_span_entry *span_entry;

	span_entry = mlxsw_sp_span_entry_find(to);
	if (!span_entry) {
		netdev_err(from->dev, "no span entry found\n");
		return;
	}

	netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
		   span_entry->id);
	mlxsw_sp_span_inspected_port_unbind(from, span_entry, type);
}

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static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
					  bool is_up)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char paos_pl[MLXSW_REG_PAOS_LEN];

	mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
			    is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
			    MLXSW_PORT_ADMIN_STATUS_DOWN);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
}

static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
				      unsigned char *addr)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char ppad_pl[MLXSW_REG_PPAD_LEN];

	mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
	mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
}

static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	unsigned char *addr = mlxsw_sp_port->dev->dev_addr;

	ether_addr_copy(addr, mlxsw_sp->base_mac);
	addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
	return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
}

static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char pmtu_pl[MLXSW_REG_PMTU_LEN];
	int max_mtu;
	int err;

	mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
	mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
	if (err)
		return err;
	max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);

	if (mtu > max_mtu)
		return -EINVAL;

	mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
}

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static int __mlxsw_sp_port_swid_set(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				    u8 swid)
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{
	char pspa_pl[MLXSW_REG_PSPA_LEN];

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	mlxsw_reg_pspa_pack(pspa_pl, swid, local_port);
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	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
}

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static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

	return __mlxsw_sp_port_swid_set(mlxsw_sp, mlxsw_sp_port->local_port,
					swid);
}

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static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
				     bool enable)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char svpe_pl[MLXSW_REG_SVPE_LEN];

	mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
}

int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
				 enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
				 u16 vid)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char svfa_pl[MLXSW_REG_SVFA_LEN];

	mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
			    fid, vid);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
}

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int __mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
				     u16 vid_begin, u16 vid_end,
				     bool learn_enable)
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{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char *spvmlr_pl;
	int err;

	spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
	if (!spvmlr_pl)
		return -ENOMEM;
574 575
	mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid_begin,
			      vid_end, learn_enable);
576 577 578 579 580
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
	kfree(spvmlr_pl);
	return err;
}

581 582 583 584 585 586 587
static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
					  u16 vid, bool learn_enable)
{
	return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
						learn_enable);
}

588 589 590 591 592 593 594 595 596 597
static int
mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char sspr_pl[MLXSW_REG_SSPR_LEN];

	mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
}

598 599 600
static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
					 u8 local_port, u8 *p_module,
					 u8 *p_width, u8 *p_lane)
601 602 603 604
{
	char pmlp_pl[MLXSW_REG_PMLP_LEN];
	int err;

605
	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
606 607 608
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
	if (err)
		return err;
609 610
	*p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
	*p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
611
	*p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
612 613 614
	return 0;
}

615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
static int mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				    u8 module, u8 width, u8 lane)
{
	char pmlp_pl[MLXSW_REG_PMLP_LEN];
	int i;

	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
	mlxsw_reg_pmlp_width_set(pmlp_pl, width);
	for (i = 0; i < width; i++) {
		mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
		mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i);  /* Rx & Tx */
	}

	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}

631 632 633 634 635 636 637 638 639
static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
	char pmlp_pl[MLXSW_REG_PMLP_LEN];

	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
	mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
}

640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
static int mlxsw_sp_port_open(struct net_device *dev)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	int err;

	err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
	if (err)
		return err;
	netif_start_queue(dev);
	return 0;
}

static int mlxsw_sp_port_stop(struct net_device *dev)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

	netif_stop_queue(dev);
	return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
}

static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
				      struct net_device *dev)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
	const struct mlxsw_tx_info tx_info = {
		.local_port = mlxsw_sp_port->local_port,
		.is_emad = false,
	};
	u64 len;
	int err;

673
	if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
		return NETDEV_TX_BUSY;

	if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
		struct sk_buff *skb_orig = skb;

		skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
		if (!skb) {
			this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
			dev_kfree_skb_any(skb_orig);
			return NETDEV_TX_OK;
		}
	}

	if (eth_skb_pad(skb)) {
		this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
		return NETDEV_TX_OK;
	}

	mlxsw_sp_txhdr_construct(skb, &tx_info);
693 694 695 696 697
	/* TX header is consumed by HW on the way so we shouldn't count its
	 * bytes as being sent.
	 */
	len = skb->len - MLXSW_TXHDR_LEN;

698 699 700
	/* Due to a race we might fail here because of a full queue. In that
	 * unlikely case we simply drop the packet.
	 */
701
	err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
702 703 704 705 706 707 708 709 710 711 712 713 714 715

	if (!err) {
		pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
		u64_stats_update_begin(&pcpu_stats->syncp);
		pcpu_stats->tx_packets++;
		pcpu_stats->tx_bytes += len;
		u64_stats_update_end(&pcpu_stats->syncp);
	} else {
		this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
		dev_kfree_skb_any(skb);
	}
	return NETDEV_TX_OK;
}

716 717 718 719
static void mlxsw_sp_set_rx_mode(struct net_device *dev)
{
}

720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735
static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct sockaddr *addr = p;
	int err;

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

	err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
	if (err)
		return err;
	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
	return 0;
}

736
static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
737
				 bool pause_en, bool pfc_en, u16 delay)
738 739
{
	u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
740

741 742
	delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
			 MLXSW_SP_PAUSE_DELAY;
743

744
	if (pause_en || pfc_en)
745
		mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
746 747
						    pg_size + delay, pg_size);
	else
748
		mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
749 750 751
}

int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
752 753
				 u8 *prio_tc, bool pause_en,
				 struct ieee_pfc *my_pfc)
754 755
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
756 757
	u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
	u16 delay = !!my_pfc ? my_pfc->delay : 0;
758
	char pbmc_pl[MLXSW_REG_PBMC_LEN];
759
	int i, j, err;
760 761 762 763 764

	mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
	if (err)
		return err;
765 766 767

	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		bool configure = false;
768
		bool pfc = false;
769 770 771

		for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
			if (prio_tc[j] == i) {
772
				pfc = pfc_en & BIT(j);
773 774 775 776 777 778 779
				configure = true;
				break;
			}
		}

		if (!configure)
			continue;
780
		mlxsw_sp_pg_buf_pack(pbmc_pl, i, mtu, pause_en, pfc, delay);
781 782
	}

783 784 785
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
}

786
static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
787
				      int mtu, bool pause_en)
788 789 790
{
	u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
	bool dcb_en = !!mlxsw_sp_port->dcb.ets;
791
	struct ieee_pfc *my_pfc;
792 793 794
	u8 *prio_tc;

	prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
795
	my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
796

797
	return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
798
					    pause_en, my_pfc);
799 800
}

801 802 803
static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
804
	bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
805 806
	int err;

807
	err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
808 809
	if (err)
		return err;
810 811 812
	err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
	if (err)
		goto err_span_port_mtu_update;
813 814 815
	err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
	if (err)
		goto err_port_mtu_set;
816 817
	dev->mtu = mtu;
	return 0;
818 819

err_port_mtu_set:
820 821
	mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
err_span_port_mtu_update:
822
	mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
823
	return err;
824 825
}

826
static int
827 828
mlxsw_sp_port_get_sw_stats64(const struct net_device *dev,
			     struct rtnl_link_stats64 *stats)
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp_port_pcpu_stats *p;
	u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
	u32 tx_dropped = 0;
	unsigned int start;
	int i;

	for_each_possible_cpu(i) {
		p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
		do {
			start = u64_stats_fetch_begin_irq(&p->syncp);
			rx_packets	= p->rx_packets;
			rx_bytes	= p->rx_bytes;
			tx_packets	= p->tx_packets;
			tx_bytes	= p->tx_bytes;
		} while (u64_stats_fetch_retry_irq(&p->syncp, start));

		stats->rx_packets	+= rx_packets;
		stats->rx_bytes		+= rx_bytes;
		stats->tx_packets	+= tx_packets;
		stats->tx_bytes		+= tx_bytes;
		/* tx_dropped is u32, updated without syncp protection. */
		tx_dropped	+= p->tx_dropped;
	}
	stats->tx_dropped	= tx_dropped;
855 856 857
	return 0;
}

858
static bool mlxsw_sp_port_has_offload_stats(int attr_id)
859 860 861 862 863 864 865 866 867
{
	switch (attr_id) {
	case IFLA_OFFLOAD_XSTATS_CPU_HIT:
		return true;
	}

	return false;
}

868 869
static int mlxsw_sp_port_get_offload_stats(int attr_id, const struct net_device *dev,
					   void *sp)
870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955
{
	switch (attr_id) {
	case IFLA_OFFLOAD_XSTATS_CPU_HIT:
		return mlxsw_sp_port_get_sw_stats64(dev, sp);
	}

	return -EINVAL;
}

static int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
				       int prio, char *ppcnt_pl)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

	mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
	return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
}

static int mlxsw_sp_port_get_hw_stats(struct net_device *dev,
				      struct rtnl_link_stats64 *stats)
{
	char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
	int err;

	err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT,
					  0, ppcnt_pl);
	if (err)
		goto out;

	stats->tx_packets =
		mlxsw_reg_ppcnt_a_frames_transmitted_ok_get(ppcnt_pl);
	stats->rx_packets =
		mlxsw_reg_ppcnt_a_frames_received_ok_get(ppcnt_pl);
	stats->tx_bytes =
		mlxsw_reg_ppcnt_a_octets_transmitted_ok_get(ppcnt_pl);
	stats->rx_bytes =
		mlxsw_reg_ppcnt_a_octets_received_ok_get(ppcnt_pl);
	stats->multicast =
		mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get(ppcnt_pl);

	stats->rx_crc_errors =
		mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get(ppcnt_pl);
	stats->rx_frame_errors =
		mlxsw_reg_ppcnt_a_alignment_errors_get(ppcnt_pl);

	stats->rx_length_errors = (
		mlxsw_reg_ppcnt_a_in_range_length_errors_get(ppcnt_pl) +
		mlxsw_reg_ppcnt_a_out_of_range_length_field_get(ppcnt_pl) +
		mlxsw_reg_ppcnt_a_frame_too_long_errors_get(ppcnt_pl));

	stats->rx_errors = (stats->rx_crc_errors +
		stats->rx_frame_errors + stats->rx_length_errors);

out:
	return err;
}

static void update_stats_cache(struct work_struct *work)
{
	struct mlxsw_sp_port *mlxsw_sp_port =
		container_of(work, struct mlxsw_sp_port,
			     hw_stats.update_dw.work);

	if (!netif_carrier_ok(mlxsw_sp_port->dev))
		goto out;

	mlxsw_sp_port_get_hw_stats(mlxsw_sp_port->dev,
				   mlxsw_sp_port->hw_stats.cache);

out:
	mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw,
			       MLXSW_HW_STATS_UPDATE_TIME);
}

/* Return the stats from a cache that is updated periodically,
 * as this function might get called in an atomic context.
 */
static struct rtnl_link_stats64 *
mlxsw_sp_port_get_stats64(struct net_device *dev,
			  struct rtnl_link_stats64 *stats)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

	memcpy(stats, mlxsw_sp_port->hw_stats.cache, sizeof(*stats));

956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
	return stats;
}

int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
			   u16 vid_end, bool is_member, bool untagged)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char *spvm_pl;
	int err;

	spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
	if (!spvm_pl)
		return -ENOMEM;

	mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port,	vid_begin,
			    vid_end, is_member, untagged);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
	kfree(spvm_pl);
	return err;
}

static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
{
	enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
	u16 vid, last_visited_vid;
	int err;

	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
		err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
						   vid);
		if (err) {
			last_visited_vid = vid;
			goto err_port_vid_to_fid_set;
		}
	}

	err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
	if (err) {
		last_visited_vid = VLAN_N_VID;
		goto err_port_vid_to_fid_set;
	}

	return 0;

err_port_vid_to_fid_set:
	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
		mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
					     vid);
	return err;
}

static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
{
	enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
	u16 vid;
	int err;

	err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
	if (err)
		return err;

	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
		err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
						   vid, vid);
		if (err)
			return err;
	}

	return 0;
}

1027
static struct mlxsw_sp_port *
1028
mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
{
	struct mlxsw_sp_port *mlxsw_sp_vport;

	mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
	if (!mlxsw_sp_vport)
		return NULL;

	/* dev will be set correctly after the VLAN device is linked
	 * with the real device. In case of bridge SELF invocation, dev
	 * will remain as is.
	 */
	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
	mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
	mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
1044 1045
	mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
	mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
1046
	mlxsw_sp_vport->vport.vid = vid;
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058

	list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);

	return mlxsw_sp_vport;
}

static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
{
	list_del(&mlxsw_sp_vport->vport.list);
	kfree(mlxsw_sp_vport);
}

1059 1060
static int mlxsw_sp_port_add_vid(struct net_device *dev,
				 __be16 __always_unused proto, u16 vid)
1061 1062
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1063
	struct mlxsw_sp_port *mlxsw_sp_vport;
1064
	bool untagged = vid == 1;
1065 1066 1067 1068 1069 1070 1071 1072
	int err;

	/* VLAN 0 is added to HW filter when device goes up, but it is
	 * reserved in our case, so simply return.
	 */
	if (!vid)
		return 0;

1073
	if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
1074 1075
		return 0;

1076
	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
1077
	if (!mlxsw_sp_vport)
1078
		return -ENOMEM;
1079 1080 1081 1082 1083

	/* When adding the first VLAN interface on a bridged port we need to
	 * transition all the active 802.1Q bridge VLANs to use explicit
	 * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
	 */
1084
	if (list_is_singular(&mlxsw_sp_port->vports_list)) {
1085
		err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
1086
		if (err)
1087
			goto err_port_vp_mode_trans;
1088 1089
	}

1090
	err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
1091
	if (err)
1092 1093 1094 1095 1096
		goto err_port_add_vid;

	return 0;

err_port_add_vid:
1097 1098 1099 1100
	if (list_is_singular(&mlxsw_sp_port->vports_list))
		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
err_port_vp_mode_trans:
	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
1101 1102 1103
	return err;
}

1104 1105
static int mlxsw_sp_port_kill_vid(struct net_device *dev,
				  __be16 __always_unused proto, u16 vid)
1106 1107
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1108
	struct mlxsw_sp_port *mlxsw_sp_vport;
1109
	struct mlxsw_sp_fid *f;
1110 1111 1112 1113 1114 1115 1116

	/* VLAN 0 is removed from HW filter when device goes down, but
	 * it is reserved in our case, so simply return.
	 */
	if (!vid)
		return 0;

1117
	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
1118
	if (WARN_ON(!mlxsw_sp_vport))
1119 1120
		return 0;

1121
	mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
1122

1123 1124 1125 1126 1127 1128
	/* Drop FID reference. If this was the last reference the
	 * resources will be freed.
	 */
	f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
	if (f && !WARN_ON(!f->leave))
		f->leave(mlxsw_sp_vport);
1129 1130 1131 1132 1133

	/* When removing the last VLAN interface on a bridged port we need to
	 * transition all active 802.1Q bridge VLANs to use VID to FID
	 * mappings and set port's mode to VLAN mode.
	 */
1134 1135
	if (list_is_singular(&mlxsw_sp_port->vports_list))
		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
1136

1137 1138
	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);

1139 1140 1141
	return 0;
}

1142 1143 1144 1145
static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
					    size_t len)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1146 1147 1148
	u8 module = mlxsw_sp_port->mapping.module;
	u8 width = mlxsw_sp_port->mapping.width;
	u8 lane = mlxsw_sp_port->mapping.lane;
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162
	int err;

	if (!mlxsw_sp_port->split)
		err = snprintf(name, len, "p%d", module + 1);
	else
		err = snprintf(name, len, "p%ds%d", module + 1,
			       lane / width);

	if (err >= len)
		return -EINVAL;

	return 0;
}

1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229
static struct mlxsw_sp_port_mall_tc_entry *
mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
				unsigned long cookie) {
	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;

	list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
		if (mall_tc_entry->cookie == cookie)
			return mall_tc_entry;

	return NULL;
}

static int
mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
				      struct tc_cls_matchall_offload *cls,
				      const struct tc_action *a,
				      bool ingress)
{
	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
	struct net *net = dev_net(mlxsw_sp_port->dev);
	enum mlxsw_sp_span_type span_type;
	struct mlxsw_sp_port *to_port;
	struct net_device *to_dev;
	int ifindex;
	int err;

	ifindex = tcf_mirred_ifindex(a);
	to_dev = __dev_get_by_index(net, ifindex);
	if (!to_dev) {
		netdev_err(mlxsw_sp_port->dev, "Could not find requested device\n");
		return -EINVAL;
	}

	if (!mlxsw_sp_port_dev_check(to_dev)) {
		netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
		return -ENOTSUPP;
	}
	to_port = netdev_priv(to_dev);

	mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
	if (!mall_tc_entry)
		return -ENOMEM;

	mall_tc_entry->cookie = cls->cookie;
	mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
	mall_tc_entry->mirror.to_local_port = to_port->local_port;
	mall_tc_entry->mirror.ingress = ingress;
	list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);

	span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
	err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
	if (err)
		goto err_mirror_add;
	return 0;

err_mirror_add:
	list_del(&mall_tc_entry->list);
	kfree(mall_tc_entry);
	return err;
}

static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
					  __be16 protocol,
					  struct tc_cls_matchall_offload *cls,
					  bool ingress)
{
	const struct tc_action *a;
1230
	LIST_HEAD(actions);
1231 1232
	int err;

1233
	if (!tc_single_action(cls->exts)) {
1234 1235 1236 1237
		netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
		return -ENOTSUPP;
	}

1238 1239
	tcf_exts_to_list(cls->exts, &actions);
	list_for_each_entry(a, &actions, list) {
1240 1241
		if (!is_tcf_mirred_egress_mirror(a) ||
		    protocol != htons(ETH_P_ALL)) {
1242
			return -ENOTSUPP;
1243
		}
1244

1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
		err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
							    a, ingress);
		if (err)
			return err;
	}

	return 0;
}

static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
					   struct tc_cls_matchall_offload *cls)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
	enum mlxsw_sp_span_type span_type;
	struct mlxsw_sp_port *to_port;

	mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
							cls->cookie);
	if (!mall_tc_entry) {
		netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
		return;
	}

	switch (mall_tc_entry->type) {
	case MLXSW_SP_PORT_MALL_MIRROR:
		to_port = mlxsw_sp->ports[mall_tc_entry->mirror.to_local_port];
		span_type = mall_tc_entry->mirror.ingress ?
				MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;

		mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
		break;
	default:
		WARN_ON(1);
	}

	list_del(&mall_tc_entry->list);
	kfree(mall_tc_entry);
}

static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
			     __be16 proto, struct tc_to_netdev *tc)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);

	if (tc->type == TC_SETUP_MATCHALL) {
		switch (tc->cls_mall->command) {
		case TC_CLSMATCHALL_REPLACE:
			return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port,
							      proto,
							      tc->cls_mall,
							      ingress);
		case TC_CLSMATCHALL_DESTROY:
			mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port,
						       tc->cls_mall);
			return 0;
		default:
			return -EINVAL;
		}
	}

	return -ENOTSUPP;
}

1310 1311 1312 1313
static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
	.ndo_open		= mlxsw_sp_port_open,
	.ndo_stop		= mlxsw_sp_port_stop,
	.ndo_start_xmit		= mlxsw_sp_port_xmit,
1314
	.ndo_setup_tc           = mlxsw_sp_setup_tc,
1315
	.ndo_set_rx_mode	= mlxsw_sp_set_rx_mode,
1316 1317 1318
	.ndo_set_mac_address	= mlxsw_sp_port_set_mac_address,
	.ndo_change_mtu		= mlxsw_sp_port_change_mtu,
	.ndo_get_stats64	= mlxsw_sp_port_get_stats64,
1319 1320
	.ndo_has_offload_stats	= mlxsw_sp_port_has_offload_stats,
	.ndo_get_offload_stats	= mlxsw_sp_port_get_offload_stats,
1321 1322
	.ndo_vlan_rx_add_vid	= mlxsw_sp_port_add_vid,
	.ndo_vlan_rx_kill_vid	= mlxsw_sp_port_kill_vid,
1323 1324
	.ndo_neigh_construct	= mlxsw_sp_router_neigh_construct,
	.ndo_neigh_destroy	= mlxsw_sp_router_neigh_destroy,
1325 1326 1327 1328 1329 1330
	.ndo_fdb_add		= switchdev_port_fdb_add,
	.ndo_fdb_del		= switchdev_port_fdb_del,
	.ndo_fdb_dump		= switchdev_port_fdb_dump,
	.ndo_bridge_setlink	= switchdev_port_bridge_setlink,
	.ndo_bridge_getlink	= switchdev_port_bridge_getlink,
	.ndo_bridge_dellink	= switchdev_port_bridge_dellink,
1331
	.ndo_get_phys_port_name	= mlxsw_sp_port_get_phys_port_name,
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351
};

static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
				      struct ethtool_drvinfo *drvinfo)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

	strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, mlxsw_sp_driver_version,
		sizeof(drvinfo->version));
	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
		 "%d.%d.%d",
		 mlxsw_sp->bus_info->fw_rev.major,
		 mlxsw_sp->bus_info->fw_rev.minor,
		 mlxsw_sp->bus_info->fw_rev.subminor);
	strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
		sizeof(drvinfo->bus_info));
}

1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
					 struct ethtool_pauseparam *pause)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);

	pause->rx_pause = mlxsw_sp_port->link.rx_pause;
	pause->tx_pause = mlxsw_sp_port->link.tx_pause;
}

static int mlxsw_sp_port_pause_set(struct mlxsw_sp_port *mlxsw_sp_port,
				   struct ethtool_pauseparam *pause)
{
	char pfcc_pl[MLXSW_REG_PFCC_LEN];

	mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
	mlxsw_reg_pfcc_pprx_set(pfcc_pl, pause->rx_pause);
	mlxsw_reg_pfcc_pptx_set(pfcc_pl, pause->tx_pause);

	return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
			       pfcc_pl);
}

static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
					struct ethtool_pauseparam *pause)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	bool pause_en = pause->tx_pause || pause->rx_pause;
	int err;

1381 1382 1383 1384 1385
	if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
		netdev_err(dev, "PFC already enabled on port\n");
		return -EINVAL;
	}

1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413
	if (pause->autoneg) {
		netdev_err(dev, "PAUSE frames autonegotiation isn't supported\n");
		return -EINVAL;
	}

	err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
	if (err) {
		netdev_err(dev, "Failed to configure port's headroom\n");
		return err;
	}

	err = mlxsw_sp_port_pause_set(mlxsw_sp_port, pause);
	if (err) {
		netdev_err(dev, "Failed to set PAUSE parameters\n");
		goto err_port_pause_configure;
	}

	mlxsw_sp_port->link.rx_pause = pause->rx_pause;
	mlxsw_sp_port->link.tx_pause = pause->tx_pause;

	return 0;

err_port_pause_configure:
	pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
	mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
	return err;
}

1414 1415
struct mlxsw_sp_port_hw_stats {
	char str[ETH_GSTRING_LEN];
1416
	u64 (*getter)(const char *payload);
1417 1418
};

1419
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499
	{
		.str = "a_frames_transmitted_ok",
		.getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
	},
	{
		.str = "a_frames_received_ok",
		.getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
	},
	{
		.str = "a_frame_check_sequence_errors",
		.getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
	},
	{
		.str = "a_alignment_errors",
		.getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
	},
	{
		.str = "a_octets_transmitted_ok",
		.getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
	},
	{
		.str = "a_octets_received_ok",
		.getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
	},
	{
		.str = "a_multicast_frames_xmitted_ok",
		.getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
	},
	{
		.str = "a_broadcast_frames_xmitted_ok",
		.getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
	},
	{
		.str = "a_multicast_frames_received_ok",
		.getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
	},
	{
		.str = "a_broadcast_frames_received_ok",
		.getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
	},
	{
		.str = "a_in_range_length_errors",
		.getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
	},
	{
		.str = "a_out_of_range_length_field",
		.getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
	},
	{
		.str = "a_frame_too_long_errors",
		.getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
	},
	{
		.str = "a_symbol_error_during_carrier",
		.getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
	},
	{
		.str = "a_mac_control_frames_transmitted",
		.getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
	},
	{
		.str = "a_mac_control_frames_received",
		.getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
	},
	{
		.str = "a_unsupported_opcodes_received",
		.getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
	},
	{
		.str = "a_pause_mac_ctrl_frames_received",
		.getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
	},
	{
		.str = "a_pause_mac_ctrl_frames_xmitted",
		.getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
	},
};

#define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)

1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
	{
		.str = "rx_octets_prio",
		.getter = mlxsw_reg_ppcnt_rx_octets_get,
	},
	{
		.str = "rx_frames_prio",
		.getter = mlxsw_reg_ppcnt_rx_frames_get,
	},
	{
		.str = "tx_octets_prio",
		.getter = mlxsw_reg_ppcnt_tx_octets_get,
	},
	{
		.str = "tx_frames_prio",
		.getter = mlxsw_reg_ppcnt_tx_frames_get,
	},
	{
		.str = "rx_pause_prio",
		.getter = mlxsw_reg_ppcnt_rx_pause_get,
	},
	{
		.str = "rx_pause_duration_prio",
		.getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
	},
	{
		.str = "tx_pause_prio",
		.getter = mlxsw_reg_ppcnt_tx_pause_get,
	},
	{
		.str = "tx_pause_duration_prio",
		.getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
	},
};

#define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)

1537
static u64 mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get(const char *ppcnt_pl)
1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556
{
	u64 transmit_queue = mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);

	return MLXSW_SP_CELLS_TO_BYTES(transmit_queue);
}

static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
	{
		.str = "tc_transmit_queue_tc",
		.getter = mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get,
	},
	{
		.str = "tc_no_buffer_discard_uc_tc",
		.getter = mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get,
	},
};

#define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)

1557
#define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
1558 1559
					 (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
					  MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572
					 IEEE_8021QAZ_MAX_TCS)

static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
{
	int i;

	for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
		snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
			 mlxsw_sp_port_hw_prio_stats[i].str, prio);
		*p += ETH_GSTRING_LEN;
	}
}

1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583
static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
{
	int i;

	for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
		snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
			 mlxsw_sp_port_hw_tc_stats[i].str, tc);
		*p += ETH_GSTRING_LEN;
	}
}

1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596
static void mlxsw_sp_port_get_strings(struct net_device *dev,
				      u32 stringset, u8 *data)
{
	u8 *p = data;
	int i;

	switch (stringset) {
	case ETH_SS_STATS:
		for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
			memcpy(p, mlxsw_sp_port_hw_stats[i].str,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
1597 1598 1599 1600

		for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
			mlxsw_sp_port_get_prio_strings(&p, i);

1601 1602 1603
		for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
			mlxsw_sp_port_get_tc_strings(&p, i);

1604 1605 1606 1607
		break;
	}
}

1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630
static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
				     enum ethtool_phys_id_state state)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char mlcr_pl[MLXSW_REG_MLCR_LEN];
	bool active;

	switch (state) {
	case ETHTOOL_ID_ACTIVE:
		active = true;
		break;
	case ETHTOOL_ID_INACTIVE:
		active = false;
		break;
	default:
		return -EOPNOTSUPP;
	}

	mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
}

1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643
static int
mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
			       int *p_len, enum mlxsw_reg_ppcnt_grp grp)
{
	switch (grp) {
	case  MLXSW_REG_PPCNT_IEEE_8023_CNT:
		*p_hw_stats = mlxsw_sp_port_hw_stats;
		*p_len = MLXSW_SP_PORT_HW_STATS_LEN;
		break;
	case MLXSW_REG_PPCNT_PRIO_CNT:
		*p_hw_stats = mlxsw_sp_port_hw_prio_stats;
		*p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
		break;
1644 1645 1646 1647
	case MLXSW_REG_PPCNT_TC_CNT:
		*p_hw_stats = mlxsw_sp_port_hw_tc_stats;
		*p_len = MLXSW_SP_PORT_HW_TC_STATS_LEN;
		break;
1648 1649 1650 1651 1652 1653 1654 1655 1656 1657
	default:
		WARN_ON(1);
		return -ENOTSUPP;
	}
	return 0;
}

static void __mlxsw_sp_port_get_stats(struct net_device *dev,
				      enum mlxsw_reg_ppcnt_grp grp, int prio,
				      u64 *data, int data_index)
1658
{
1659
	struct mlxsw_sp_port_hw_stats *hw_stats;
1660
	char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1661
	int i, len;
1662 1663
	int err;

1664 1665 1666
	err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
	if (err)
		return;
1667
	mlxsw_sp_port_get_stats_raw(dev, grp, prio, ppcnt_pl);
1668
	for (i = 0; i < len; i++)
1669
		data[data_index + i] = hw_stats[i].getter(ppcnt_pl);
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687
}

static void mlxsw_sp_port_get_stats(struct net_device *dev,
				    struct ethtool_stats *stats, u64 *data)
{
	int i, data_index = 0;

	/* IEEE 802.3 Counters */
	__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
				  data, data_index);
	data_index = MLXSW_SP_PORT_HW_STATS_LEN;

	/* Per-Priority Counters */
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
					  data, data_index);
		data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
	}
1688 1689 1690 1691 1692 1693 1694

	/* Per-TC Counters */
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		__mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
					  data, data_index);
		data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;
	}
1695 1696 1697 1698 1699 1700
}

static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
1701
		return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
1702 1703 1704 1705 1706 1707
	default:
		return -EOPNOTSUPP;
	}
}

struct mlxsw_sp_port_link_mode {
1708
	enum ethtool_link_mode_bit_indices mask_ethtool;
1709 1710 1711 1712 1713 1714 1715
	u32 mask;
	u32 speed;
};

static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1716 1717
		.mask_ethtool	= ETHTOOL_LINK_MODE_100baseT_Full_BIT,
		.speed		= SPEED_100,
1718 1719 1720 1721
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_SGMII |
				  MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1722 1723
		.mask_ethtool	= ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
		.speed		= SPEED_1000,
1724 1725 1726
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1727 1728
		.mask_ethtool	= ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
		.speed		= SPEED_10000,
1729 1730 1731 1732
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
				  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1733 1734
		.mask_ethtool	= ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
		.speed		= SPEED_10000,
1735 1736 1737 1738 1739 1740
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
				  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
				  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
				  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1741 1742
		.mask_ethtool	= ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
		.speed		= SPEED_10000,
1743 1744 1745
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1746 1747
		.mask_ethtool	= ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
		.speed		= SPEED_20000,
1748 1749 1750
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1751 1752
		.mask_ethtool	= ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
		.speed		= SPEED_40000,
1753 1754 1755
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1756 1757
		.mask_ethtool	= ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
		.speed		= SPEED_40000,
1758 1759 1760
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1761 1762
		.mask_ethtool	= ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
		.speed		= SPEED_40000,
1763 1764 1765
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782
		.mask_ethtool	= ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
		.speed		= SPEED_40000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR,
		.mask_ethtool	= ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
		.speed		= SPEED_25000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR,
		.mask_ethtool	= ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
		.speed		= SPEED_25000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
		.mask_ethtool	= ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
		.speed		= SPEED_25000,
1783 1784
	},
	{
1785 1786 1787
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
		.mask_ethtool	= ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
		.speed		= SPEED_25000,
1788 1789
	},
	{
1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2,
		.mask_ethtool	= ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT,
		.speed		= SPEED_50000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
		.mask_ethtool	= ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT,
		.speed		= SPEED_50000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_50GBASE_SR2,
		.mask_ethtool	= ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT,
		.speed		= SPEED_50000,
1803 1804 1805
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1806 1807
		.mask_ethtool	= ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT,
		.speed		= SPEED_56000,
1808 1809
	},
	{
1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT,
		.speed		= SPEED_56000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT,
		.speed		= SPEED_56000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
		.speed		= SPEED_56000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
		.speed		= SPEED_100000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
		.speed		= SPEED_100000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
		.speed		= SPEED_100000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
		.mask_ethtool	= ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT,
		.speed		= SPEED_100000,
1843 1844 1845 1846 1847
	},
};

#define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)

1848 1849 1850
static void
mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto,
				  struct ethtool_link_ksettings *cmd)
1851 1852 1853 1854 1855 1856 1857
{
	if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
			      MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
			      MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1858
		ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
1859 1860 1861 1862 1863 1864

	if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
			      MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
			      MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1865
		ethtool_link_ksettings_add_link_mode(cmd, supported, Backplane);
1866 1867
}

1868
static void mlxsw_sp_from_ptys_link(u32 ptys_eth_proto, unsigned long *mode)
1869 1870 1871 1872 1873
{
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1874 1875
			__set_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
				  mode);
1876 1877 1878 1879
	}
}

static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1880
					    struct ethtool_link_ksettings *cmd)
1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
{
	u32 speed = SPEED_UNKNOWN;
	u8 duplex = DUPLEX_UNKNOWN;
	int i;

	if (!carrier_ok)
		goto out;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
			speed = mlxsw_sp_port_link_mode[i].speed;
			duplex = DUPLEX_FULL;
			break;
		}
	}
out:
1897 1898
	cmd->base.speed = speed;
	cmd->base.duplex = duplex;
1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922
}

static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
{
	if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
			      MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_SGMII))
		return PORT_FIBRE;

	if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
			      MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
		return PORT_DA;

	if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
			      MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
			      MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
			      MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
		return PORT_NONE;

	return PORT_OTHER;
}

1923 1924
static u32
mlxsw_sp_to_ptys_advert_link(const struct ethtool_link_ksettings *cmd)
1925 1926 1927 1928 1929
{
	u32 ptys_proto = 0;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1930 1931
		if (test_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
			     cmd->link_modes.advertising))
1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948
			ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
	}
	return ptys_proto;
}

static u32 mlxsw_sp_to_ptys_speed(u32 speed)
{
	u32 ptys_proto = 0;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (speed == mlxsw_sp_port_link_mode[i].speed)
			ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
	}
	return ptys_proto;
}

1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960
static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
{
	u32 ptys_proto = 0;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
			ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
	}
	return ptys_proto;
}

1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973
static void mlxsw_sp_port_get_link_supported(u32 eth_proto_cap,
					     struct ethtool_link_ksettings *cmd)
{
	ethtool_link_ksettings_add_link_mode(cmd, supported, Asym_Pause);
	ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
	ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);

	mlxsw_sp_from_ptys_supported_port(eth_proto_cap, cmd);
	mlxsw_sp_from_ptys_link(eth_proto_cap, cmd->link_modes.supported);
}

static void mlxsw_sp_port_get_link_advertise(u32 eth_proto_admin, bool autoneg,
					     struct ethtool_link_ksettings *cmd)
1974
{
1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996
	if (!autoneg)
		return;

	ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
	mlxsw_sp_from_ptys_link(eth_proto_admin, cmd->link_modes.advertising);
}

static void
mlxsw_sp_port_get_link_lp_advertise(u32 eth_proto_lp, u8 autoneg_status,
				    struct ethtool_link_ksettings *cmd)
{
	if (autoneg_status != MLXSW_REG_PTYS_AN_STATUS_OK || !eth_proto_lp)
		return;

	ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, Autoneg);
	mlxsw_sp_from_ptys_link(eth_proto_lp, cmd->link_modes.lp_advertising);
}

static int mlxsw_sp_port_get_link_ksettings(struct net_device *dev,
					    struct ethtool_link_ksettings *cmd)
{
	u32 eth_proto_cap, eth_proto_admin, eth_proto_oper, eth_proto_lp;
1997 1998 1999
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char ptys_pl[MLXSW_REG_PTYS_LEN];
2000
	u8 autoneg_status;
2001
	bool autoneg;
2002 2003
	int err;

2004 2005 2006 2007 2008 2009 2010 2011 2012
	autoneg = mlxsw_sp_port->link.autoneg;
	mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
	if (err)
		return err;
	mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin,
			      &eth_proto_oper);

	mlxsw_sp_port_get_link_supported(eth_proto_cap, cmd);
2013

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037
	mlxsw_sp_port_get_link_advertise(eth_proto_admin, autoneg, cmd);

	eth_proto_lp = mlxsw_reg_ptys_eth_proto_lp_advertise_get(ptys_pl);
	autoneg_status = mlxsw_reg_ptys_an_status_get(ptys_pl);
	mlxsw_sp_port_get_link_lp_advertise(eth_proto_lp, autoneg_status, cmd);

	cmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
	cmd->base.port = mlxsw_sp_port_connector_port(eth_proto_oper);
	mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev), eth_proto_oper,
					cmd);

	return 0;
}

static int
mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
				 const struct ethtool_link_ksettings *cmd)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char ptys_pl[MLXSW_REG_PTYS_LEN];
	u32 eth_proto_cap, eth_proto_new;
	bool autoneg;
	int err;
2038 2039 2040

	mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
2041
	if (err)
2042
		return err;
2043 2044 2045 2046 2047 2048
	mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, NULL, NULL);

	autoneg = cmd->base.autoneg == AUTONEG_ENABLE;
	eth_proto_new = autoneg ?
		mlxsw_sp_to_ptys_advert_link(cmd) :
		mlxsw_sp_to_ptys_speed(cmd->base.speed);
2049 2050 2051

	eth_proto_new = eth_proto_new & eth_proto_cap;
	if (!eth_proto_new) {
2052
		netdev_err(dev, "No supported speed requested\n");
2053 2054 2055 2056 2057
		return -EINVAL;
	}

	mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
2058
	if (err)
2059 2060
		return err;

2061
	if (!netif_running(dev))
2062 2063
		return 0;

2064 2065
	mlxsw_sp_port->link.autoneg = autoneg;

2066 2067
	mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
	mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
2068 2069 2070 2071 2072 2073 2074

	return 0;
}

static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
	.get_drvinfo		= mlxsw_sp_port_get_drvinfo,
	.get_link		= ethtool_op_get_link,
2075 2076
	.get_pauseparam		= mlxsw_sp_port_get_pauseparam,
	.set_pauseparam		= mlxsw_sp_port_set_pauseparam,
2077
	.get_strings		= mlxsw_sp_port_get_strings,
2078
	.set_phys_id		= mlxsw_sp_port_set_phys_id,
2079 2080
	.get_ethtool_stats	= mlxsw_sp_port_get_stats,
	.get_sset_count		= mlxsw_sp_port_get_sset_count,
2081 2082
	.get_link_ksettings	= mlxsw_sp_port_get_link_ksettings,
	.set_link_ksettings	= mlxsw_sp_port_set_link_ksettings,
2083 2084
};

2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098
static int
mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
	char ptys_pl[MLXSW_REG_PTYS_LEN];
	u32 eth_proto_admin;

	eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
	mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port,
			    eth_proto_admin);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
}

2099 2100 2101
int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
			  enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
			  bool dwrr, u8 dwrr_weight)
2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char qeec_pl[MLXSW_REG_QEEC_LEN];

	mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
			    next_index);
	mlxsw_reg_qeec_de_set(qeec_pl, true);
	mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
	mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

2114 2115 2116
int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
				  enum mlxsw_reg_qeec_hr hr, u8 index,
				  u8 next_index, u32 maxrate)
2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char qeec_pl[MLXSW_REG_QEEC_LEN];

	mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
			    next_index);
	mlxsw_reg_qeec_mase_set(qeec_pl, true);
	mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
}

2128 2129
int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
			      u8 switch_prio, u8 tclass)
2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char qtct_pl[MLXSW_REG_QTCT_LEN];

	mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
			    tclass);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
}

static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err, i;

	/* Setup the elements hierarcy, so that each TC is linked to
	 * one subgroup, which are all member in the same group.
	 */
	err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
				    MLXSW_REG_QEEC_HIERARCY_GROUP, 0, 0, false,
				    0);
	if (err)
		return err;
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
					    MLXSW_REG_QEEC_HIERARCY_SUBGROUP, i,
					    0, false, 0);
		if (err)
			return err;
	}
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
					    MLXSW_REG_QEEC_HIERARCY_TC, i, i,
					    false, 0);
		if (err)
			return err;
	}

	/* Make sure the max shaper is disabled in all hierarcies that
	 * support it.
	 */
	err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
					    MLXSW_REG_QEEC_HIERARCY_PORT, 0, 0,
					    MLXSW_REG_QEEC_MAS_DIS);
	if (err)
		return err;
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
						    MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
						    i, 0,
						    MLXSW_REG_QEEC_MAS_DIS);
		if (err)
			return err;
	}
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
						    MLXSW_REG_QEEC_HIERARCY_TC,
						    i, i,
						    MLXSW_REG_QEEC_MAS_DIS);
		if (err)
			return err;
	}

	/* Map all priorities to traffic class 0. */
	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
		if (err)
			return err;
	}

	return 0;
}

2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212
static int mlxsw_sp_port_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
{
	mlxsw_sp_port->pvid = 1;

	return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
}

static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
{
	return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
}

2213
static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
2214
				bool split, u8 module, u8 width, u8 lane)
2215 2216 2217
{
	struct mlxsw_sp_port *mlxsw_sp_port;
	struct net_device *dev;
2218
	size_t bytes;
2219 2220 2221 2222 2223 2224 2225 2226 2227
	int err;

	dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
	if (!dev)
		return -ENOMEM;
	mlxsw_sp_port = netdev_priv(dev);
	mlxsw_sp_port->dev = dev;
	mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
	mlxsw_sp_port->local_port = local_port;
2228
	mlxsw_sp_port->split = split;
2229 2230 2231
	mlxsw_sp_port->mapping.module = module;
	mlxsw_sp_port->mapping.width = width;
	mlxsw_sp_port->mapping.lane = lane;
2232
	mlxsw_sp_port->link.autoneg = 1;
2233 2234 2235 2236 2237 2238
	bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
	mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
	if (!mlxsw_sp_port->active_vlans) {
		err = -ENOMEM;
		goto err_port_active_vlans_alloc;
	}
E
Elad Raz 已提交
2239 2240 2241 2242 2243
	mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
	if (!mlxsw_sp_port->untagged_vlans) {
		err = -ENOMEM;
		goto err_port_untagged_vlans_alloc;
	}
2244
	INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
2245
	INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);
2246 2247 2248 2249 2250 2251 2252 2253

	mlxsw_sp_port->pcpu_stats =
		netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
	if (!mlxsw_sp_port->pcpu_stats) {
		err = -ENOMEM;
		goto err_alloc_stats;
	}

2254 2255 2256 2257 2258 2259 2260 2261 2262 2263
	mlxsw_sp_port->hw_stats.cache =
		kzalloc(sizeof(*mlxsw_sp_port->hw_stats.cache), GFP_KERNEL);

	if (!mlxsw_sp_port->hw_stats.cache) {
		err = -ENOMEM;
		goto err_alloc_hw_stats;
	}
	INIT_DELAYED_WORK(&mlxsw_sp_port->hw_stats.update_dw,
			  &update_stats_cache);

2264 2265 2266
	dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
	dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;

2267 2268 2269 2270 2271 2272 2273
	err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
			mlxsw_sp_port->local_port);
		goto err_port_swid_set;
	}

2274 2275 2276 2277 2278 2279 2280 2281 2282 2283
	err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
			mlxsw_sp_port->local_port);
		goto err_dev_addr_init;
	}

	netif_carrier_off(dev);

	dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
2284 2285
			 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
	dev->hw_features |= NETIF_F_HW_TC;
2286

2287 2288 2289
	dev->min_mtu = 0;
	dev->max_mtu = ETH_MAX_MTU;

2290 2291 2292
	/* Each packet needs to have a Tx header (metadata) on top all other
	 * headers.
	 */
2293
	dev->needed_headroom = MLXSW_TXHDR_LEN;
2294 2295 2296 2297 2298 2299 2300 2301

	err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
			mlxsw_sp_port->local_port);
		goto err_port_system_port_mapping_set;
	}

2302 2303 2304 2305 2306 2307 2308
	err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
			mlxsw_sp_port->local_port);
		goto err_port_speed_by_width_set;
	}

2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326
	err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
			mlxsw_sp_port->local_port);
		goto err_port_mtu_set;
	}

	err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
	if (err)
		goto err_port_admin_status_set;

	err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
			mlxsw_sp_port->local_port);
		goto err_port_buffers_init;
	}

2327 2328 2329 2330 2331 2332 2333
	err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize ETS\n",
			mlxsw_sp_port->local_port);
		goto err_port_ets_init;
	}

2334 2335 2336 2337 2338 2339 2340 2341
	/* ETS and buffers must be initialized before DCB. */
	err = mlxsw_sp_port_dcb_init(mlxsw_sp_port);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize DCB\n",
			mlxsw_sp_port->local_port);
		goto err_port_dcb_init;
	}

2342 2343 2344 2345 2346 2347 2348
	err = mlxsw_sp_port_pvid_vport_create(mlxsw_sp_port);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
			mlxsw_sp_port->local_port);
		goto err_port_pvid_vport_create;
	}

2349
	mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
2350
	mlxsw_sp->ports[local_port] = mlxsw_sp_port;
2351 2352 2353 2354 2355 2356 2357
	err = register_netdev(dev);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
			mlxsw_sp_port->local_port);
		goto err_register_netdev;
	}

2358 2359 2360 2361 2362 2363 2364 2365
	err = mlxsw_core_port_init(mlxsw_sp->core, &mlxsw_sp_port->core_port,
				   mlxsw_sp_port->local_port, dev,
				   mlxsw_sp_port->split, module);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
			mlxsw_sp_port->local_port);
		goto err_core_port_init;
	}
J
Jiri Pirko 已提交
2366

2367
	mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw, 0);
2368 2369
	return 0;

2370
err_core_port_init:
2371 2372
	unregister_netdev(dev);
err_register_netdev:
2373
	mlxsw_sp->ports[local_port] = NULL;
2374
	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2375 2376
	mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
err_port_pvid_vport_create:
2377
	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2378
err_port_dcb_init:
2379
err_port_ets_init:
2380 2381 2382
err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
2383
err_port_speed_by_width_set:
2384 2385
err_port_system_port_mapping_set:
err_dev_addr_init:
2386 2387
	mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
err_port_swid_set:
2388 2389
	kfree(mlxsw_sp_port->hw_stats.cache);
err_alloc_hw_stats:
2390 2391
	free_percpu(mlxsw_sp_port->pcpu_stats);
err_alloc_stats:
E
Elad Raz 已提交
2392 2393
	kfree(mlxsw_sp_port->untagged_vlans);
err_port_untagged_vlans_alloc:
2394 2395
	kfree(mlxsw_sp_port->active_vlans);
err_port_active_vlans_alloc:
2396 2397 2398 2399 2400 2401 2402 2403 2404 2405
	free_netdev(dev);
	return err;
}

static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
{
	struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];

	if (!mlxsw_sp_port)
		return;
2406
	cancel_delayed_work_sync(&mlxsw_sp_port->hw_stats.update_dw);
2407
	mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
2408
	unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
2409
	mlxsw_sp->ports[local_port] = NULL;
2410
	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2411
	mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2412
	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2413 2414
	mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
	mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
2415
	free_percpu(mlxsw_sp_port->pcpu_stats);
2416
	kfree(mlxsw_sp_port->hw_stats.cache);
E
Elad Raz 已提交
2417
	kfree(mlxsw_sp_port->untagged_vlans);
2418
	kfree(mlxsw_sp_port->active_vlans);
2419
	WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433
	free_netdev(mlxsw_sp_port->dev);
}

static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
{
	int i;

	for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
		mlxsw_sp_port_remove(mlxsw_sp, i);
	kfree(mlxsw_sp->ports);
}

static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
{
2434
	u8 module, width, lane;
2435 2436 2437 2438 2439 2440 2441 2442 2443 2444
	size_t alloc_size;
	int i;
	int err;

	alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
	mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
	if (!mlxsw_sp->ports)
		return -ENOMEM;

	for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
2445
		err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
2446
						    &width, &lane);
2447 2448 2449 2450 2451
		if (err)
			goto err_port_module_info_get;
		if (!width)
			continue;
		mlxsw_sp->port_to_module[i] = module;
2452 2453
		err = mlxsw_sp_port_create(mlxsw_sp, i, false, module, width,
					   lane);
2454 2455 2456 2457 2458 2459
		if (err)
			goto err_port_create;
	}
	return 0;

err_port_create:
2460
err_port_module_info_get:
2461 2462 2463 2464 2465 2466
	for (i--; i >= 1; i--)
		mlxsw_sp_port_remove(mlxsw_sp, i);
	kfree(mlxsw_sp->ports);
	return err;
}

2467 2468 2469 2470 2471 2472 2473
static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
{
	u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;

	return local_port - offset;
}

2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494
static int mlxsw_sp_port_split_create(struct mlxsw_sp *mlxsw_sp, u8 base_port,
				      u8 module, unsigned int count)
{
	u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
	int err, i;

	for (i = 0; i < count; i++) {
		err = mlxsw_sp_port_module_map(mlxsw_sp, base_port + i, module,
					       width, i * width);
		if (err)
			goto err_port_module_map;
	}

	for (i = 0; i < count; i++) {
		err = __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i, 0);
		if (err)
			goto err_port_swid_set;
	}

	for (i = 0; i < count; i++) {
		err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
2495
					   module, width, i * width);
2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543
		if (err)
			goto err_port_create;
	}

	return 0;

err_port_create:
	for (i--; i >= 0; i--)
		mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
	i = count;
err_port_swid_set:
	for (i--; i >= 0; i--)
		__mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i,
					 MLXSW_PORT_SWID_DISABLED_PORT);
	i = count;
err_port_module_map:
	for (i--; i >= 0; i--)
		mlxsw_sp_port_module_unmap(mlxsw_sp, base_port + i);
	return err;
}

static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
					 u8 base_port, unsigned int count)
{
	u8 local_port, module, width = MLXSW_PORT_MODULE_MAX_WIDTH;
	int i;

	/* Split by four means we need to re-create two ports, otherwise
	 * only one.
	 */
	count = count / 2;

	for (i = 0; i < count; i++) {
		local_port = base_port + i * 2;
		module = mlxsw_sp->port_to_module[local_port];

		mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
					 0);
	}

	for (i = 0; i < count; i++)
		__mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i * 2, 0);

	for (i = 0; i < count; i++) {
		local_port = base_port + i * 2;
		module = mlxsw_sp->port_to_module[local_port];

		mlxsw_sp_port_create(mlxsw_sp, local_port, false, module,
2544
				     width, 0);
2545 2546 2547
	}
}

2548 2549
static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
			       unsigned int count)
2550
{
2551
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563
	struct mlxsw_sp_port *mlxsw_sp_port;
	u8 module, cur_width, base_port;
	int i;
	int err;

	mlxsw_sp_port = mlxsw_sp->ports[local_port];
	if (!mlxsw_sp_port) {
		dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
			local_port);
		return -EINVAL;
	}

2564 2565 2566
	module = mlxsw_sp_port->mapping.module;
	cur_width = mlxsw_sp_port->mapping.width;

2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595
	if (count != 2 && count != 4) {
		netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
		return -EINVAL;
	}

	if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
		netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
		return -EINVAL;
	}

	/* Make sure we have enough slave (even) ports for the split. */
	if (count == 2) {
		base_port = local_port;
		if (mlxsw_sp->ports[base_port + 1]) {
			netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
			return -EINVAL;
		}
	} else {
		base_port = mlxsw_sp_cluster_base_port_get(local_port);
		if (mlxsw_sp->ports[base_port + 1] ||
		    mlxsw_sp->ports[base_port + 3]) {
			netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
			return -EINVAL;
		}
	}

	for (i = 0; i < count; i++)
		mlxsw_sp_port_remove(mlxsw_sp, base_port + i);

2596 2597 2598 2599
	err = mlxsw_sp_port_split_create(mlxsw_sp, base_port, module, count);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to create split ports\n");
		goto err_port_split_create;
2600 2601 2602 2603
	}

	return 0;

2604 2605
err_port_split_create:
	mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2606 2607 2608
	return err;
}

2609
static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
2610
{
2611
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2612
	struct mlxsw_sp_port *mlxsw_sp_port;
2613
	u8 cur_width, base_port;
2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628
	unsigned int count;
	int i;

	mlxsw_sp_port = mlxsw_sp->ports[local_port];
	if (!mlxsw_sp_port) {
		dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
			local_port);
		return -EINVAL;
	}

	if (!mlxsw_sp_port->split) {
		netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
		return -EINVAL;
	}

2629
	cur_width = mlxsw_sp_port->mapping.width;
2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640
	count = cur_width == 1 ? 4 : 2;

	base_port = mlxsw_sp_cluster_base_port_get(local_port);

	/* Determine which ports to remove. */
	if (count == 2 && local_port >= base_port + 2)
		base_port = base_port + 2;

	for (i = 0; i < count; i++)
		mlxsw_sp_port_remove(mlxsw_sp, base_port + i);

2641
	mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2642 2643 2644 2645

	return 0;
}

2646 2647 2648 2649 2650 2651 2652 2653 2654 2655
static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
				     char *pude_pl, void *priv)
{
	struct mlxsw_sp *mlxsw_sp = priv;
	struct mlxsw_sp_port *mlxsw_sp_port;
	enum mlxsw_reg_pude_oper_status status;
	u8 local_port;

	local_port = mlxsw_reg_pude_local_port_get(pude_pl);
	mlxsw_sp_port = mlxsw_sp->ports[local_port];
2656
	if (!mlxsw_sp_port)
2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739
		return;

	status = mlxsw_reg_pude_oper_status_get(pude_pl);
	if (status == MLXSW_PORT_OPER_STATUS_UP) {
		netdev_info(mlxsw_sp_port->dev, "link up\n");
		netif_carrier_on(mlxsw_sp_port->dev);
	} else {
		netdev_info(mlxsw_sp_port->dev, "link down\n");
		netif_carrier_off(mlxsw_sp_port->dev);
	}
}

static struct mlxsw_event_listener mlxsw_sp_pude_event = {
	.func = mlxsw_sp_pude_event_func,
	.trap_id = MLXSW_TRAP_ID_PUDE,
};

static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
				   enum mlxsw_event_trap_id trap_id)
{
	struct mlxsw_event_listener *el;
	char hpkt_pl[MLXSW_REG_HPKT_LEN];
	int err;

	switch (trap_id) {
	case MLXSW_TRAP_ID_PUDE:
		el = &mlxsw_sp_pude_event;
		break;
	}
	err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
	if (err)
		return err;

	mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
	if (err)
		goto err_event_trap_set;

	return 0;

err_event_trap_set:
	mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
	return err;
}

static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
				      enum mlxsw_event_trap_id trap_id)
{
	struct mlxsw_event_listener *el;

	switch (trap_id) {
	case MLXSW_TRAP_ID_PUDE:
		el = &mlxsw_sp_pude_event;
		break;
	}
	mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
}

static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
				      void *priv)
{
	struct mlxsw_sp *mlxsw_sp = priv;
	struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
	struct mlxsw_sp_port_pcpu_stats *pcpu_stats;

	if (unlikely(!mlxsw_sp_port)) {
		dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
				     local_port);
		return;
	}

	skb->dev = mlxsw_sp_port->dev;

	pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
	u64_stats_update_begin(&pcpu_stats->syncp);
	pcpu_stats->rx_packets++;
	pcpu_stats->rx_bytes += skb->len;
	u64_stats_update_end(&pcpu_stats->syncp);

	skb->protocol = eth_type_trans(skb, skb->dev);
	netif_receive_skb(skb);
}

2740 2741 2742 2743 2744 2745 2746
static void mlxsw_sp_rx_listener_mark_func(struct sk_buff *skb, u8 local_port,
					   void *priv)
{
	skb->offload_fwd_mark = 1;
	return mlxsw_sp_rx_listener_func(skb, local_port, priv);
}

2747 2748 2749 2750 2751 2752
#define MLXSW_SP_RXL(_func, _trap_id, _action)			\
	{							\
		.func = _func,					\
		.local_port = MLXSW_PORT_DONT_CARE,		\
		.trap_id = MLXSW_TRAP_ID_##_trap_id,		\
		.action = MLXSW_REG_HPKT_ACTION_##_action,	\
2753 2754
	}

2755
static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
2756
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, FDB_MC, TRAP_TO_CPU),
2757
	/* Traps for specific L2 packet types, not trapped as FDB MC */
2758 2759 2760 2761 2762 2763 2764
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, STP, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LACP, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, EAPOL, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LLDP, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MMRP, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MVRP, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, RPVST, TRAP_TO_CPU),
2765 2766
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, DHCP, MIRROR_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, IGMP_QUERY, MIRROR_TO_CPU),
2767 2768 2769 2770
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V1_REPORT, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V2_REPORT, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V2_LEAVE, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V3_REPORT, TRAP_TO_CPU),
2771 2772
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, ARPBC, MIRROR_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, ARPUC, MIRROR_TO_CPU),
2773
	/* L3 traps */
2774 2775 2776
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MTUERROR, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, TTLERROR, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LBERROR, TRAP_TO_CPU),
2777
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, OSPF, TRAP_TO_CPU),
2778 2779 2780
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IP2ME, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, RTR_INGRESS0, TRAP_TO_CPU),
	MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, HOST_MISS_IPV4, TRAP_TO_CPU),
2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806
};

static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
{
	char htgt_pl[MLXSW_REG_HTGT_LEN];
	char hpkt_pl[MLXSW_REG_HPKT_LEN];
	int i;
	int err;

	mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
	if (err)
		return err;

	mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
	if (err)
		return err;

	for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
		err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
						      &mlxsw_sp_rx_listener[i],
						      mlxsw_sp);
		if (err)
			goto err_rx_listener_register;

2807
		mlxsw_reg_hpkt_pack(hpkt_pl, mlxsw_sp_rx_listener[i].action,
2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820
				    mlxsw_sp_rx_listener[i].trap_id);
		err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
		if (err)
			goto err_rx_trap_set;
	}
	return 0;

err_rx_trap_set:
	mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
					  &mlxsw_sp_rx_listener[i],
					  mlxsw_sp);
err_rx_listener_register:
	for (i--; i >= 0; i--) {
2821
		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837
				    mlxsw_sp_rx_listener[i].trap_id);
		mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);

		mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
						  &mlxsw_sp_rx_listener[i],
						  mlxsw_sp);
	}
	return err;
}

static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
{
	char hpkt_pl[MLXSW_REG_HPKT_LEN];
	int i;

	for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2838
		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855
				    mlxsw_sp_rx_listener[i].trap_id);
		mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);

		mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
						  &mlxsw_sp_rx_listener[i],
						  mlxsw_sp);
	}
}

static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
				 enum mlxsw_reg_sfgc_type type,
				 enum mlxsw_reg_sfgc_bridge_type bridge_type)
{
	enum mlxsw_flood_table_type table_type;
	enum mlxsw_sp_flood_table flood_table;
	char sfgc_pl[MLXSW_REG_SFGC_LEN];

2856
	if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2857
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2858
	else
2859
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2860 2861 2862 2863 2864

	if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
		flood_table = MLXSW_SP_FLOOD_TABLE_UC;
	else
		flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892

	mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
			    flood_table);
	return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
}

static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
{
	int type, err;

	for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
		if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
			continue;

		err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
					    MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
		if (err)
			return err;

		err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
					    MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
		if (err)
			return err;
	}

	return 0;
}

2893 2894
static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
{
2895
	struct mlxsw_resources *resources;
2896
	char slcr_pl[MLXSW_REG_SLCR_LEN];
2897
	int err;
2898 2899 2900 2901 2902 2903 2904 2905 2906 2907

	mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
				     MLXSW_REG_SLCR_LAG_HASH_DMAC |
				     MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
				     MLXSW_REG_SLCR_LAG_HASH_VLANID |
				     MLXSW_REG_SLCR_LAG_HASH_SIP |
				     MLXSW_REG_SLCR_LAG_HASH_DIP |
				     MLXSW_REG_SLCR_LAG_HASH_SPORT |
				     MLXSW_REG_SLCR_LAG_HASH_DPORT |
				     MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
	if (err)
		return err;

	resources = mlxsw_core_resources_get(mlxsw_sp->core);
	if (!(resources->max_lag_valid && resources->max_ports_in_lag_valid))
		return -EIO;

	mlxsw_sp->lags = kcalloc(resources->max_lag,
				 sizeof(struct mlxsw_sp_upper),
				 GFP_KERNEL);
	if (!mlxsw_sp->lags)
		return -ENOMEM;

	return 0;
}

static void mlxsw_sp_lag_fini(struct mlxsw_sp *mlxsw_sp)
{
	kfree(mlxsw_sp->lags);
2928 2929
}

2930
static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
2931 2932
			 const struct mlxsw_bus_info *mlxsw_bus_info)
{
2933
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2934 2935 2936 2937
	int err;

	mlxsw_sp->core = mlxsw_core;
	mlxsw_sp->bus_info = mlxsw_bus_info;
2938
	INIT_LIST_HEAD(&mlxsw_sp->fids);
2939
	INIT_LIST_HEAD(&mlxsw_sp->vfids.list);
2940
	INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2941 2942 2943 2944 2945 2946 2947 2948 2949 2950

	err = mlxsw_sp_base_mac_get(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
		return err;
	}

	err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
2951
		return err;
2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971
	}

	err = mlxsw_sp_traps_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
		goto err_rx_listener_register;
	}

	err = mlxsw_sp_flood_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
		goto err_flood_init;
	}

	err = mlxsw_sp_buffers_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
		goto err_buffers_init;
	}

2972 2973 2974 2975 2976 2977
	err = mlxsw_sp_lag_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
		goto err_lag_init;
	}

2978 2979 2980 2981 2982 2983
	err = mlxsw_sp_switchdev_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
		goto err_switchdev_init;
	}

2984 2985 2986 2987 2988 2989
	err = mlxsw_sp_router_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize router\n");
		goto err_router_init;
	}

2990 2991 2992 2993 2994 2995
	err = mlxsw_sp_span_init(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to init span system\n");
		goto err_span_init;
	}

2996 2997 2998 2999 3000 3001
	err = mlxsw_sp_ports_create(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
		goto err_ports_create;
	}

3002 3003
	return 0;

3004
err_ports_create:
3005 3006
	mlxsw_sp_span_fini(mlxsw_sp);
err_span_init:
3007 3008
	mlxsw_sp_router_fini(mlxsw_sp);
err_router_init:
3009
	mlxsw_sp_switchdev_fini(mlxsw_sp);
3010
err_switchdev_init:
3011
	mlxsw_sp_lag_fini(mlxsw_sp);
3012
err_lag_init:
3013
	mlxsw_sp_buffers_fini(mlxsw_sp);
3014 3015 3016 3017 3018 3019 3020 3021
err_buffers_init:
err_flood_init:
	mlxsw_sp_traps_fini(mlxsw_sp);
err_rx_listener_register:
	mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
	return err;
}

3022
static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
3023
{
3024
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
3025

3026
	mlxsw_sp_ports_remove(mlxsw_sp);
3027
	mlxsw_sp_span_fini(mlxsw_sp);
3028
	mlxsw_sp_router_fini(mlxsw_sp);
3029
	mlxsw_sp_switchdev_fini(mlxsw_sp);
3030
	mlxsw_sp_lag_fini(mlxsw_sp);
3031
	mlxsw_sp_buffers_fini(mlxsw_sp);
3032 3033
	mlxsw_sp_traps_fini(mlxsw_sp);
	mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
3034
	WARN_ON(!list_empty(&mlxsw_sp->vfids.list));
3035
	WARN_ON(!list_empty(&mlxsw_sp->fids));
3036 3037 3038 3039 3040 3041
}

static struct mlxsw_config_profile mlxsw_sp_config_profile = {
	.used_max_vepa_channels		= 1,
	.max_vepa_channels		= 0,
	.used_max_mid			= 1,
3042
	.max_mid			= MLXSW_SP_MID_MAX,
3043 3044 3045 3046 3047 3048 3049
	.used_max_pgt			= 1,
	.max_pgt			= 0,
	.used_flood_tables		= 1,
	.used_flood_mode		= 1,
	.flood_mode			= 3,
	.max_fid_offset_flood_tables	= 2,
	.fid_offset_flood_table_size	= VLAN_N_VID - 1,
3050 3051
	.max_fid_flood_tables		= 2,
	.fid_flood_table_size		= MLXSW_SP_VFID_MAX,
3052 3053 3054 3055
	.used_max_ib_mc			= 1,
	.max_ib_mc			= 0,
	.used_max_pkey			= 1,
	.max_pkey			= 0,
3056 3057 3058 3059
	.used_kvd_split_data		= 1,
	.kvd_hash_granularity		= MLXSW_SP_KVD_GRANULARITY,
	.kvd_hash_single_parts		= 2,
	.kvd_hash_double_parts		= 1,
3060
	.kvd_linear_size		= MLXSW_SP_KVD_LINEAR_SIZE,
3061 3062 3063 3064 3065 3066
	.swid_config			= {
		{
			.used_type	= 1,
			.type		= MLXSW_PORT_SWID_TYPE_ETH,
		}
	},
3067
	.resource_query_enable		= 1,
3068 3069 3070
};

static struct mlxsw_driver mlxsw_sp_driver = {
3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090
	.kind				= MLXSW_DEVICE_KIND_SPECTRUM,
	.owner				= THIS_MODULE,
	.priv_size			= sizeof(struct mlxsw_sp),
	.init				= mlxsw_sp_init,
	.fini				= mlxsw_sp_fini,
	.port_split			= mlxsw_sp_port_split,
	.port_unsplit			= mlxsw_sp_port_unsplit,
	.sb_pool_get			= mlxsw_sp_sb_pool_get,
	.sb_pool_set			= mlxsw_sp_sb_pool_set,
	.sb_port_pool_get		= mlxsw_sp_sb_port_pool_get,
	.sb_port_pool_set		= mlxsw_sp_sb_port_pool_set,
	.sb_tc_pool_bind_get		= mlxsw_sp_sb_tc_pool_bind_get,
	.sb_tc_pool_bind_set		= mlxsw_sp_sb_tc_pool_bind_set,
	.sb_occ_snapshot		= mlxsw_sp_sb_occ_snapshot,
	.sb_occ_max_clear		= mlxsw_sp_sb_occ_max_clear,
	.sb_occ_port_pool_get		= mlxsw_sp_sb_occ_port_pool_get,
	.sb_occ_tc_port_bind_get	= mlxsw_sp_sb_occ_tc_port_bind_get,
	.txhdr_construct		= mlxsw_sp_txhdr_construct,
	.txhdr_len			= MLXSW_TXHDR_LEN,
	.profile			= &mlxsw_sp_config_profile,
3091 3092
};

3093 3094 3095 3096 3097
static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
{
	return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
}

D
David Ahern 已提交
3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110
static int mlxsw_lower_dev_walk(struct net_device *lower_dev, void *data)
{
	struct mlxsw_sp_port **port = data;
	int ret = 0;

	if (mlxsw_sp_port_dev_check(lower_dev)) {
		*port = netdev_priv(lower_dev);
		ret = 1;
	}

	return ret;
}

3111 3112
static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev)
{
D
David Ahern 已提交
3113
	struct mlxsw_sp_port *port;
3114 3115 3116 3117

	if (mlxsw_sp_port_dev_check(dev))
		return netdev_priv(dev);

D
David Ahern 已提交
3118 3119 3120 3121
	port = NULL;
	netdev_walk_all_lower_dev(dev, mlxsw_lower_dev_walk, &port);

	return port;
3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133
}

static struct mlxsw_sp *mlxsw_sp_lower_get(struct net_device *dev)
{
	struct mlxsw_sp_port *mlxsw_sp_port;

	mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
	return mlxsw_sp_port ? mlxsw_sp_port->mlxsw_sp : NULL;
}

static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find_rcu(struct net_device *dev)
{
D
David Ahern 已提交
3134
	struct mlxsw_sp_port *port;
3135 3136 3137 3138

	if (mlxsw_sp_port_dev_check(dev))
		return netdev_priv(dev);

D
David Ahern 已提交
3139 3140 3141 3142
	port = NULL;
	netdev_walk_all_lower_dev_rcu(dev, mlxsw_lower_dev_walk, &port);

	return port;
3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161
}

struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev)
{
	struct mlxsw_sp_port *mlxsw_sp_port;

	rcu_read_lock();
	mlxsw_sp_port = mlxsw_sp_port_dev_lower_find_rcu(dev);
	if (mlxsw_sp_port)
		dev_hold(mlxsw_sp_port->dev);
	rcu_read_unlock();
	return mlxsw_sp_port;
}

void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port)
{
	dev_put(mlxsw_sp_port->dev);
}

3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185
static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r,
				       unsigned long event)
{
	switch (event) {
	case NETDEV_UP:
		if (!r)
			return true;
		r->ref_count++;
		return false;
	case NETDEV_DOWN:
		if (r && --r->ref_count == 0)
			return true;
		/* It is possible we already removed the RIF ourselves
		 * if it was assigned to a netdev that is now a bridge
		 * or LAG slave.
		 */
		return false;
	}

	return false;
}

static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp)
{
3186
	struct mlxsw_resources *resources;
3187 3188
	int i;

3189 3190
	resources = mlxsw_core_resources_get(mlxsw_sp->core);
	for (i = 0; i < resources->max_rif; i++)
3191 3192 3193
		if (!mlxsw_sp->rifs[i])
			return i;

3194
	return MLXSW_SP_INVALID_RIF;
3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273
}

static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport,
					   bool *p_lagged, u16 *p_system_port)
{
	u8 local_port = mlxsw_sp_vport->local_port;

	*p_lagged = mlxsw_sp_vport->lagged;
	*p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port;
}

static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport,
				    struct net_device *l3_dev, u16 rif,
				    bool create)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
	bool lagged = mlxsw_sp_vport->lagged;
	char ritr_pl[MLXSW_REG_RITR_LEN];
	u16 system_port;

	mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif,
			    l3_dev->mtu, l3_dev->dev_addr);

	mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port);
	mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port,
				  mlxsw_sp_vport_vid_get(mlxsw_sp_vport));

	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
}

static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport);

static struct mlxsw_sp_fid *
mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev)
{
	struct mlxsw_sp_fid *f;

	f = kzalloc(sizeof(*f), GFP_KERNEL);
	if (!f)
		return NULL;

	f->leave = mlxsw_sp_vport_rif_sp_leave;
	f->ref_count = 0;
	f->dev = l3_dev;
	f->fid = fid;

	return f;
}

static struct mlxsw_sp_rif *
mlxsw_sp_rif_alloc(u16 rif, struct net_device *l3_dev, struct mlxsw_sp_fid *f)
{
	struct mlxsw_sp_rif *r;

	r = kzalloc(sizeof(*r), GFP_KERNEL);
	if (!r)
		return NULL;

	ether_addr_copy(r->addr, l3_dev->dev_addr);
	r->mtu = l3_dev->mtu;
	r->ref_count = 1;
	r->dev = l3_dev;
	r->rif = rif;
	r->f = f;

	return r;
}

static struct mlxsw_sp_rif *
mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport,
			     struct net_device *l3_dev)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
	struct mlxsw_sp_fid *f;
	struct mlxsw_sp_rif *r;
	u16 fid, rif;
	int err;

	rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3274
	if (rif == MLXSW_SP_INVALID_RIF)
3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424
		return ERR_PTR(-ERANGE);

	err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, true);
	if (err)
		return ERR_PTR(err);

	fid = mlxsw_sp_rif_sp_to_fid(rif);
	err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true);
	if (err)
		goto err_rif_fdb_op;

	f = mlxsw_sp_rfid_alloc(fid, l3_dev);
	if (!f) {
		err = -ENOMEM;
		goto err_rfid_alloc;
	}

	r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
	if (!r) {
		err = -ENOMEM;
		goto err_rif_alloc;
	}

	f->r = r;
	mlxsw_sp->rifs[rif] = r;

	return r;

err_rif_alloc:
	kfree(f);
err_rfid_alloc:
	mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
err_rif_fdb_op:
	mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
	return ERR_PTR(err);
}

static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport,
					  struct mlxsw_sp_rif *r)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
	struct net_device *l3_dev = r->dev;
	struct mlxsw_sp_fid *f = r->f;
	u16 fid = f->fid;
	u16 rif = r->rif;

	mlxsw_sp->rifs[rif] = NULL;
	f->r = NULL;

	kfree(r);

	kfree(f);

	mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);

	mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
}

static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport,
				      struct net_device *l3_dev)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
	struct mlxsw_sp_rif *r;

	r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
	if (!r) {
		r = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev);
		if (IS_ERR(r))
			return PTR_ERR(r);
	}

	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, r->f);
	r->f->ref_count++;

	netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", r->f->fid);

	return 0;
}

static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
{
	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);

	netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);

	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
	if (--f->ref_count == 0)
		mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->r);
}

static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev,
					 struct net_device *port_dev,
					 unsigned long event, u16 vid)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
	struct mlxsw_sp_port *mlxsw_sp_vport;

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
	if (WARN_ON(!mlxsw_sp_vport))
		return -EINVAL;

	switch (event) {
	case NETDEV_UP:
		return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev);
	case NETDEV_DOWN:
		mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport);
		break;
	}

	return 0;
}

static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
					unsigned long event)
{
	if (netif_is_bridge_port(port_dev) || netif_is_lag_port(port_dev))
		return 0;

	return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1);
}

static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
					 struct net_device *lag_dev,
					 unsigned long event, u16 vid)
{
	struct net_device *port_dev;
	struct list_head *iter;
	int err;

	netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
		if (mlxsw_sp_port_dev_check(port_dev)) {
			err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev,
							    event, vid);
			if (err)
				return err;
		}
	}

	return 0;
}

static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
				       unsigned long event)
{
	if (netif_is_bridge_port(lag_dev))
		return 0;

	return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1);
}

3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439
static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp,
						    struct net_device *l3_dev)
{
	u16 fid;

	if (is_vlan_dev(l3_dev))
		fid = vlan_dev_vlan_id(l3_dev);
	else if (mlxsw_sp->master_bridge.dev == l3_dev)
		fid = 1;
	else
		return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev);

	return mlxsw_sp_fid_find(mlxsw_sp, fid);
}

3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472
static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid)
{
	return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID :
	       MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
}

static u16 mlxsw_sp_flood_table_index_get(u16 fid)
{
	return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid;
}

static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid,
					  bool set)
{
	enum mlxsw_flood_table_type table_type;
	char *sftr_pl;
	u16 index;
	int err;

	sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
	if (!sftr_pl)
		return -ENOMEM;

	table_type = mlxsw_sp_flood_table_type_get(fid);
	index = mlxsw_sp_flood_table_index_get(fid);
	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, index, table_type,
			    1, MLXSW_PORT_ROUTER_PORT, set);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);

	kfree(sftr_pl);
	return err;
}

3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505
static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid)
{
	if (mlxsw_sp_fid_is_vfid(fid))
		return MLXSW_REG_RITR_FID_IF;
	else
		return MLXSW_REG_RITR_VLAN_IF;
}

static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp,
				  struct net_device *l3_dev,
				  u16 fid, u16 rif,
				  bool create)
{
	enum mlxsw_reg_ritr_if_type rif_type;
	char ritr_pl[MLXSW_REG_RITR_LEN];

	rif_type = mlxsw_sp_rif_type_get(fid);
	mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, l3_dev->mtu,
			    l3_dev->dev_addr);
	mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid);

	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
}

static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
				      struct net_device *l3_dev,
				      struct mlxsw_sp_fid *f)
{
	struct mlxsw_sp_rif *r;
	u16 rif;
	int err;

	rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3506
	if (rif == MLXSW_SP_INVALID_RIF)
3507 3508
		return -ERANGE;

3509
	err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
3510 3511 3512
	if (err)
		return err;

3513 3514 3515 3516
	err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true);
	if (err)
		goto err_rif_bridge_op;

3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537
	err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true);
	if (err)
		goto err_rif_fdb_op;

	r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
	if (!r) {
		err = -ENOMEM;
		goto err_rif_alloc;
	}

	f->r = r;
	mlxsw_sp->rifs[rif] = r;

	netdev_dbg(l3_dev, "RIF=%d created\n", rif);

	return 0;

err_rif_alloc:
	mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
err_rif_fdb_op:
	mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3538 3539
err_rif_bridge_op:
	mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558
	return err;
}

void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp,
				 struct mlxsw_sp_rif *r)
{
	struct net_device *l3_dev = r->dev;
	struct mlxsw_sp_fid *f = r->f;
	u16 rif = r->rif;

	mlxsw_sp->rifs[rif] = NULL;
	f->r = NULL;

	kfree(r);

	mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);

	mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);

3559 3560
	mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);

3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
	netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif);
}

static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev,
					  struct net_device *br_dev,
					  unsigned long event)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
	struct mlxsw_sp_fid *f;

	/* FID can either be an actual FID if the L3 device is the
	 * VLAN-aware bridge or a VLAN device on top. Otherwise, the
	 * L3 device is a VLAN-unaware bridge and we get a vFID.
	 */
	f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev);
	if (WARN_ON(!f))
		return -EINVAL;

	switch (event) {
	case NETDEV_UP:
		return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f);
	case NETDEV_DOWN:
		mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
		break;
	}

	return 0;
}

3590 3591 3592 3593
static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev,
					unsigned long event)
{
	struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3594
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev);
3595 3596 3597 3598 3599 3600 3601 3602
	u16 vid = vlan_dev_vlan_id(vlan_dev);

	if (mlxsw_sp_port_dev_check(real_dev))
		return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event,
						     vid);
	else if (netif_is_lag_master(real_dev))
		return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
						     vid);
3603 3604 3605 3606
	else if (netif_is_bridge_master(real_dev) &&
		 mlxsw_sp->master_bridge.dev == real_dev)
		return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev,
						      event);
3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631

	return 0;
}

static int mlxsw_sp_inetaddr_event(struct notifier_block *unused,
				   unsigned long event, void *ptr)
{
	struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
	struct net_device *dev = ifa->ifa_dev->dev;
	struct mlxsw_sp *mlxsw_sp;
	struct mlxsw_sp_rif *r;
	int err = 0;

	mlxsw_sp = mlxsw_sp_lower_get(dev);
	if (!mlxsw_sp)
		goto out;

	r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
	if (!mlxsw_sp_rif_should_config(r, event))
		goto out;

	if (mlxsw_sp_port_dev_check(dev))
		err = mlxsw_sp_inetaddr_port_event(dev, event);
	else if (netif_is_lag_master(dev))
		err = mlxsw_sp_inetaddr_lag_event(dev, event);
3632 3633
	else if (netif_is_bridge_master(dev))
		err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event);
3634 3635 3636 3637 3638 3639 3640
	else if (is_vlan_dev(dev))
		err = mlxsw_sp_inetaddr_vlan_event(dev, event);

out:
	return notifier_from_errno(err);
}

3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697
static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif,
			     const char *mac, int mtu)
{
	char ritr_pl[MLXSW_REG_RITR_LEN];
	int err;

	mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
	if (err)
		return err;

	mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
	mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
	mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
}

static int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
{
	struct mlxsw_sp *mlxsw_sp;
	struct mlxsw_sp_rif *r;
	int err;

	mlxsw_sp = mlxsw_sp_lower_get(dev);
	if (!mlxsw_sp)
		return 0;

	r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
	if (!r)
		return 0;

	err = mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, false);
	if (err)
		return err;

	err = mlxsw_sp_rif_edit(mlxsw_sp, r->rif, dev->dev_addr, dev->mtu);
	if (err)
		goto err_rif_edit;

	err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, r->f->fid, true);
	if (err)
		goto err_rif_fdb_op;

	ether_addr_copy(r->addr, dev->dev_addr);
	r->mtu = dev->mtu;

	netdev_dbg(dev, "Updated RIF=%d\n", r->rif);

	return 0;

err_rif_fdb_op:
	mlxsw_sp_rif_edit(mlxsw_sp, r->rif, r->addr, r->mtu);
err_rif_edit:
	mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, true);
	return err;
}

3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708
static bool mlxsw_sp_lag_port_fid_member(struct mlxsw_sp_port *lag_port,
					 u16 fid)
{
	if (mlxsw_sp_fid_is_vfid(fid))
		return mlxsw_sp_port_vport_find_by_fid(lag_port, fid);
	else
		return test_bit(fid, lag_port->active_vlans);
}

static bool mlxsw_sp_port_fdb_should_flush(struct mlxsw_sp_port *mlxsw_sp_port,
					   u16 fid)
3709 3710
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3711 3712
	u8 local_port = mlxsw_sp_port->local_port;
	u16 lag_id = mlxsw_sp_port->lag_id;
3713
	struct mlxsw_resources *resources;
3714
	int i, count = 0;
3715

3716 3717
	if (!mlxsw_sp_port->lagged)
		return true;
3718

3719 3720
	resources = mlxsw_core_resources_get(mlxsw_sp->core);
	for (i = 0; i < resources->max_ports_in_lag; i++) {
3721 3722 3723 3724 3725 3726 3727 3728 3729 3730
		struct mlxsw_sp_port *lag_port;

		lag_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
		if (!lag_port || lag_port->local_port == local_port)
			continue;
		if (mlxsw_sp_lag_port_fid_member(lag_port, fid))
			count++;
	}

	return !count;
3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744
}

static int
mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
				    u16 fid)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char sfdf_pl[MLXSW_REG_SFDF_LEN];

	mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
	mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
	mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
						mlxsw_sp_port->local_port);

I
Ido Schimmel 已提交
3745 3746 3747
	netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using Port=%d, FID=%d\n",
		   mlxsw_sp_port->local_port, fid);

3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}

static int
mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
				      u16 fid)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char sfdf_pl[MLXSW_REG_SFDF_LEN];

	mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
	mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
	mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);

I
Ido Schimmel 已提交
3762 3763 3764
	netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using LAG ID=%d, FID=%d\n",
		   mlxsw_sp_port->lag_id, fid);

3765 3766 3767
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}

3768
int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
3769
{
3770 3771
	if (!mlxsw_sp_port_fdb_should_flush(mlxsw_sp_port, fid))
		return 0;
3772

3773 3774
	if (mlxsw_sp_port->lagged)
		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port,
3775 3776
							     fid);
	else
3777
		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, fid);
3778 3779
}

3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790
static void mlxsw_sp_master_bridge_gone_sync(struct mlxsw_sp *mlxsw_sp)
{
	struct mlxsw_sp_fid *f, *tmp;

	list_for_each_entry_safe(f, tmp, &mlxsw_sp->fids, list)
		if (--f->ref_count == 0)
			mlxsw_sp_fid_destroy(mlxsw_sp, f);
		else
			WARN_ON_ONCE(1);
}

3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806
static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
					 struct net_device *br_dev)
{
	return !mlxsw_sp->master_bridge.dev ||
	       mlxsw_sp->master_bridge.dev == br_dev;
}

static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
				       struct net_device *br_dev)
{
	mlxsw_sp->master_bridge.dev = br_dev;
	mlxsw_sp->master_bridge.ref_count++;
}

static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
{
3807
	if (--mlxsw_sp->master_bridge.ref_count == 0) {
3808
		mlxsw_sp->master_bridge.dev = NULL;
3809 3810 3811 3812 3813 3814 3815
		/* It's possible upper VLAN devices are still holding
		 * references to underlying FIDs. Drop the reference
		 * and release the resources if it was the last one.
		 * If it wasn't, then something bad happened.
		 */
		mlxsw_sp_master_bridge_gone_sync(mlxsw_sp);
	}
3816 3817 3818 3819
}

static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
				     struct net_device *br_dev)
3820 3821 3822 3823 3824 3825 3826 3827 3828 3829
{
	struct net_device *dev = mlxsw_sp_port->dev;
	int err;

	/* When port is not bridged untagged packets are tagged with
	 * PVID=VID=1, thereby creating an implicit VLAN interface in
	 * the device. Remove it and let bridge code take care of its
	 * own VLANs.
	 */
	err = mlxsw_sp_port_kill_vid(dev, 0, 1);
3830 3831
	if (err)
		return err;
3832

3833 3834
	mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev);

3835 3836 3837 3838 3839 3840
	mlxsw_sp_port->learning = 1;
	mlxsw_sp_port->learning_sync = 1;
	mlxsw_sp_port->uc_flood = 1;
	mlxsw_sp_port->bridged = 1;

	return 0;
3841 3842
}

3843
static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3844 3845
{
	struct net_device *dev = mlxsw_sp_port->dev;
3846

3847 3848
	mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);

3849 3850
	mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);

3851 3852 3853
	mlxsw_sp_port->learning = 0;
	mlxsw_sp_port->learning_sync = 0;
	mlxsw_sp_port->uc_flood = 0;
3854
	mlxsw_sp_port->bridged = 0;
3855 3856 3857 3858

	/* Add implicit VLAN interface in the device, so that untagged
	 * packets will be classified to the default vFID.
	 */
3859
	mlxsw_sp_port_add_vid(dev, 0, 1);
3860 3861
}

3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925
static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
{
	char sldr_pl[MLXSW_REG_SLDR_LEN];

	mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}

static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
{
	char sldr_pl[MLXSW_REG_SLDR_LEN];

	mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}

static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
				     u16 lag_id, u8 port_index)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char slcor_pl[MLXSW_REG_SLCOR_LEN];

	mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
				      lag_id, port_index);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}

static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
					u16 lag_id)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char slcor_pl[MLXSW_REG_SLCOR_LEN];

	mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
					 lag_id);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}

static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
					u16 lag_id)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char slcor_pl[MLXSW_REG_SLCOR_LEN];

	mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
					lag_id);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}

static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
					 u16 lag_id)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char slcor_pl[MLXSW_REG_SLCOR_LEN];

	mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
					 lag_id);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
}

static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
				  struct net_device *lag_dev,
				  u16 *p_lag_id)
{
3926
	struct mlxsw_resources *resources;
3927 3928 3929 3930
	struct mlxsw_sp_upper *lag;
	int free_lag_id = -1;
	int i;

3931 3932
	resources = mlxsw_core_resources_get(mlxsw_sp->core);
	for (i = 0; i < resources->max_lag; i++) {
3933 3934 3935 3936 3937 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
		lag = mlxsw_sp_lag_get(mlxsw_sp, i);
		if (lag->ref_count) {
			if (lag->dev == lag_dev) {
				*p_lag_id = i;
				return 0;
			}
		} else if (free_lag_id < 0) {
			free_lag_id = i;
		}
	}
	if (free_lag_id < 0)
		return -EBUSY;
	*p_lag_id = free_lag_id;
	return 0;
}

static bool
mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
			  struct net_device *lag_dev,
			  struct netdev_lag_upper_info *lag_upper_info)
{
	u16 lag_id;

	if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
		return false;
	if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
		return false;
	return true;
}

static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
				       u16 lag_id, u8 *p_port_index)
{
3966
	struct mlxsw_resources *resources;
3967 3968
	int i;

3969 3970
	resources = mlxsw_core_resources_get(mlxsw_sp->core);
	for (i = 0; i < resources->max_ports_in_lag; i++) {
3971 3972 3973 3974 3975 3976 3977 3978
		if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
			*p_port_index = i;
			return 0;
		}
	}
	return -EBUSY;
}

3979 3980 3981 3982 3983
static void
mlxsw_sp_port_pvid_vport_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
				  u16 lag_id)
{
	struct mlxsw_sp_port *mlxsw_sp_vport;
3984
	struct mlxsw_sp_fid *f;
3985 3986 3987 3988 3989

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
	if (WARN_ON(!mlxsw_sp_vport))
		return;

3990 3991 3992 3993 3994 3995 3996
	/* If vPort is assigned a RIF, then leave it since it's no
	 * longer valid.
	 */
	f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
	if (f)
		f->leave(mlxsw_sp_vport);

3997 3998 3999 4000 4001 4002 4003 4004
	mlxsw_sp_vport->lag_id = lag_id;
	mlxsw_sp_vport->lagged = 1;
}

static void
mlxsw_sp_port_pvid_vport_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port)
{
	struct mlxsw_sp_port *mlxsw_sp_vport;
4005
	struct mlxsw_sp_fid *f;
4006 4007 4008 4009 4010

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
	if (WARN_ON(!mlxsw_sp_vport))
		return;

4011 4012 4013 4014
	f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
	if (f)
		f->leave(mlxsw_sp_vport);

4015 4016 4017
	mlxsw_sp_vport->lagged = 0;
}

4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052
static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
				  struct net_device *lag_dev)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	struct mlxsw_sp_upper *lag;
	u16 lag_id;
	u8 port_index;
	int err;

	err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
	if (err)
		return err;
	lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
	if (!lag->ref_count) {
		err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
		if (err)
			return err;
		lag->dev = lag_dev;
	}

	err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
	if (err)
		return err;
	err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
	if (err)
		goto err_col_port_add;
	err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
	if (err)
		goto err_col_port_enable;

	mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
				   mlxsw_sp_port->local_port);
	mlxsw_sp_port->lag_id = lag_id;
	mlxsw_sp_port->lagged = 1;
	lag->ref_count++;
4053 4054 4055

	mlxsw_sp_port_pvid_vport_lag_join(mlxsw_sp_port, lag_id);

4056 4057
	return 0;

4058 4059
err_col_port_enable:
	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
4060 4061 4062 4063 4064 4065
err_col_port_add:
	if (!lag->ref_count)
		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
	return err;
}

4066 4067
static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
				    struct net_device *lag_dev)
4068 4069 4070
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u16 lag_id = mlxsw_sp_port->lag_id;
4071
	struct mlxsw_sp_upper *lag;
4072 4073

	if (!mlxsw_sp_port->lagged)
4074
		return;
4075 4076 4077
	lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
	WARN_ON(lag->ref_count == 0);

4078 4079
	mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
4080

4081 4082
	if (mlxsw_sp_port->bridged) {
		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
4083
		mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4084 4085
	}

4086
	if (lag->ref_count == 1)
4087
		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
4088 4089 4090 4091 4092

	mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
				     mlxsw_sp_port->local_port);
	mlxsw_sp_port->lagged = 0;
	lag->ref_count--;
4093 4094

	mlxsw_sp_port_pvid_vport_lag_leave(mlxsw_sp_port);
4095 4096
}

4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135
static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
				      u16 lag_id)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char sldr_pl[MLXSW_REG_SLDR_LEN];

	mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
					 mlxsw_sp_port->local_port);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}

static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
					 u16 lag_id)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char sldr_pl[MLXSW_REG_SLDR_LEN];

	mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
					    mlxsw_sp_port->local_port);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
}

static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
				       bool lag_tx_enabled)
{
	if (lag_tx_enabled)
		return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
						  mlxsw_sp_port->lag_id);
	else
		return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
						     mlxsw_sp_port->lag_id);
}

static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
				     struct netdev_lag_lower_state_info *info)
{
	return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
}

4136 4137 4138 4139 4140 4141 4142
static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
				   struct net_device *vlan_dev)
{
	struct mlxsw_sp_port *mlxsw_sp_vport;
	u16 vid = vlan_dev_vlan_id(vlan_dev);

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4143
	if (WARN_ON(!mlxsw_sp_vport))
4144 4145 4146 4147 4148 4149 4150
		return -EINVAL;

	mlxsw_sp_vport->dev = vlan_dev;

	return 0;
}

4151 4152
static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
				      struct net_device *vlan_dev)
4153 4154 4155 4156 4157
{
	struct mlxsw_sp_port *mlxsw_sp_vport;
	u16 vid = vlan_dev_vlan_id(vlan_dev);

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4158
	if (WARN_ON(!mlxsw_sp_vport))
4159
		return;
4160 4161 4162 4163

	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
}

4164 4165
static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
					       unsigned long event, void *ptr)
4166 4167 4168 4169 4170
{
	struct netdev_notifier_changeupper_info *info;
	struct mlxsw_sp_port *mlxsw_sp_port;
	struct net_device *upper_dev;
	struct mlxsw_sp *mlxsw_sp;
4171
	int err = 0;
4172 4173 4174 4175 4176 4177 4178 4179

	mlxsw_sp_port = netdev_priv(dev);
	mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	info = ptr;

	switch (event) {
	case NETDEV_PRECHANGEUPPER:
		upper_dev = info->upper_dev;
4180 4181 4182 4183
		if (!is_vlan_dev(upper_dev) &&
		    !netif_is_lag_master(upper_dev) &&
		    !netif_is_bridge_master(upper_dev))
			return -EINVAL;
4184
		if (!info->linking)
4185
			break;
4186
		/* HW limitation forbids to put ports to multiple bridges. */
4187
		if (netif_is_bridge_master(upper_dev) &&
4188
		    !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
4189
			return -EINVAL;
4190 4191 4192
		if (netif_is_lag_master(upper_dev) &&
		    !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
					       info->upper_info))
4193
			return -EINVAL;
4194 4195 4196 4197 4198
		if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev))
			return -EINVAL;
		if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
		    !netif_is_lag_master(vlan_dev_real_dev(upper_dev)))
			return -EINVAL;
4199 4200 4201
		break;
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
4202
		if (is_vlan_dev(upper_dev)) {
4203
			if (info->linking)
4204 4205
				err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
							      upper_dev);
4206
			else
4207 4208
				 mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
							   upper_dev);
4209
		} else if (netif_is_bridge_master(upper_dev)) {
4210 4211 4212 4213
			if (info->linking)
				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
								upper_dev);
			else
4214
				mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4215
		} else if (netif_is_lag_master(upper_dev)) {
4216
			if (info->linking)
4217 4218
				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
							     upper_dev);
4219
			else
4220 4221
				mlxsw_sp_port_lag_leave(mlxsw_sp_port,
							upper_dev);
4222 4223 4224
		} else {
			err = -EINVAL;
			WARN_ON(1);
4225 4226 4227 4228
		}
		break;
	}

4229
	return err;
4230 4231
}

4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252
static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
					       unsigned long event, void *ptr)
{
	struct netdev_notifier_changelowerstate_info *info;
	struct mlxsw_sp_port *mlxsw_sp_port;
	int err;

	mlxsw_sp_port = netdev_priv(dev);
	info = ptr;

	switch (event) {
	case NETDEV_CHANGELOWERSTATE:
		if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
			err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
							info->lower_state_info);
			if (err)
				netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
		}
		break;
	}

4253
	return 0;
4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266
}

static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
					 unsigned long event, void *ptr)
{
	switch (event) {
	case NETDEV_PRECHANGEUPPER:
	case NETDEV_CHANGEUPPER:
		return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
	case NETDEV_CHANGELOWERSTATE:
		return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
	}

4267
	return 0;
4268 4269
}

4270 4271 4272 4273 4274 4275 4276 4277 4278 4279
static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
					unsigned long event, void *ptr)
{
	struct net_device *dev;
	struct list_head *iter;
	int ret;

	netdev_for_each_lower_dev(lag_dev, dev, iter) {
		if (mlxsw_sp_port_dev_check(dev)) {
			ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4280
			if (ret)
4281 4282 4283 4284
				return ret;
		}
	}

4285
	return 0;
4286 4287
}

4288 4289
static int mlxsw_sp_master_bridge_vlan_link(struct mlxsw_sp *mlxsw_sp,
					    struct net_device *vlan_dev)
4290
{
4291
	u16 fid = vlan_dev_vlan_id(vlan_dev);
4292
	struct mlxsw_sp_fid *f;
4293

4294 4295 4296 4297 4298
	f = mlxsw_sp_fid_find(mlxsw_sp, fid);
	if (!f) {
		f = mlxsw_sp_fid_create(mlxsw_sp, fid);
		if (IS_ERR(f))
			return PTR_ERR(f);
4299 4300
	}

4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312
	f->ref_count++;

	return 0;
}

static void mlxsw_sp_master_bridge_vlan_unlink(struct mlxsw_sp *mlxsw_sp,
					       struct net_device *vlan_dev)
{
	u16 fid = vlan_dev_vlan_id(vlan_dev);
	struct mlxsw_sp_fid *f;

	f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4313 4314
	if (f && f->r)
		mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351
	if (f && --f->ref_count == 0)
		mlxsw_sp_fid_destroy(mlxsw_sp, f);
}

static int mlxsw_sp_netdevice_bridge_event(struct net_device *br_dev,
					   unsigned long event, void *ptr)
{
	struct netdev_notifier_changeupper_info *info;
	struct net_device *upper_dev;
	struct mlxsw_sp *mlxsw_sp;
	int err;

	mlxsw_sp = mlxsw_sp_lower_get(br_dev);
	if (!mlxsw_sp)
		return 0;
	if (br_dev != mlxsw_sp->master_bridge.dev)
		return 0;

	info = ptr;

	switch (event) {
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
		if (!is_vlan_dev(upper_dev))
			break;
		if (info->linking) {
			err = mlxsw_sp_master_bridge_vlan_link(mlxsw_sp,
							       upper_dev);
			if (err)
				return err;
		} else {
			mlxsw_sp_master_bridge_vlan_unlink(mlxsw_sp, upper_dev);
		}
		break;
	}

	return 0;
4352 4353
}

4354
static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
4355
{
4356
	return find_first_zero_bit(mlxsw_sp->vfids.mapped,
4357
				   MLXSW_SP_VFID_MAX);
4358 4359
}

4360
static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
4361
{
4362
	char sfmr_pl[MLXSW_REG_SFMR_LEN];
4363

4364 4365
	mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
4366 4367
}

4368
static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
4369

4370 4371
static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
						 struct net_device *br_dev)
4372 4373
{
	struct device *dev = mlxsw_sp->bus_info->dev;
4374
	struct mlxsw_sp_fid *f;
4375
	u16 vfid, fid;
4376 4377
	int err;

4378
	vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
4379
	if (vfid == MLXSW_SP_VFID_MAX) {
4380 4381 4382 4383
		dev_err(dev, "No available vFIDs\n");
		return ERR_PTR(-ERANGE);
	}

4384 4385
	fid = mlxsw_sp_vfid_to_fid(vfid);
	err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
4386
	if (err) {
4387
		dev_err(dev, "Failed to create FID=%d\n", fid);
4388 4389 4390
		return ERR_PTR(err);
	}

4391 4392
	f = kzalloc(sizeof(*f), GFP_KERNEL);
	if (!f)
4393 4394
		goto err_allocate_vfid;

4395
	f->leave = mlxsw_sp_vport_vfid_leave;
4396 4397
	f->fid = fid;
	f->dev = br_dev;
4398

4399 4400
	list_add(&f->list, &mlxsw_sp->vfids.list);
	set_bit(vfid, mlxsw_sp->vfids.mapped);
4401

4402
	return f;
4403 4404

err_allocate_vfid:
4405
	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4406 4407 4408
	return ERR_PTR(-ENOMEM);
}

4409 4410
static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
				  struct mlxsw_sp_fid *f)
4411
{
4412
	u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
4413
	u16 fid = f->fid;
4414

4415
	clear_bit(vfid, mlxsw_sp->vfids.mapped);
4416
	list_del(&f->list);
4417

4418 4419
	if (f->r)
		mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4420

4421
	kfree(f);
4422 4423

	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4424 4425
}

4426 4427 4428 4429 4430 4431 4432 4433 4434 4435
static int mlxsw_sp_vport_fid_map(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
				  bool valid)
{
	enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);

	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport, mt, valid, fid,
					    vid);
}

4436 4437
static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
				    struct net_device *br_dev)
4438
{
4439
	struct mlxsw_sp_fid *f;
4440 4441
	int err;

4442
	f = mlxsw_sp_vfid_find(mlxsw_sp_vport->mlxsw_sp, br_dev);
4443
	if (!f) {
4444
		f = mlxsw_sp_vfid_create(mlxsw_sp_vport->mlxsw_sp, br_dev);
4445 4446
		if (IS_ERR(f))
			return PTR_ERR(f);
4447 4448
	}

4449 4450 4451
	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
	if (err)
		goto err_vport_flood_set;
4452

4453 4454
	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
	if (err)
4455
		goto err_vport_fid_map;
4456

4457
	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
4458
	f->ref_count++;
4459

I
Ido Schimmel 已提交
4460 4461
	netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", f->fid);

4462
	return 0;
4463

4464 4465 4466
err_vport_fid_map:
	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
err_vport_flood_set:
4467
	if (!f->ref_count)
4468
		mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4469 4470
	return err;
}
4471

4472
static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4473
{
4474
	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4475

I
Ido Schimmel 已提交
4476 4477
	netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);

4478
	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
4479

4480 4481
	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);

4482 4483
	mlxsw_sp_port_fdb_flush(mlxsw_sp_vport, f->fid);

4484
	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
4485
	if (--f->ref_count == 0)
4486
		mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4487 4488 4489 4490 4491
}

static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
				      struct net_device *br_dev)
{
4492
	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4493 4494 4495 4496
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
	struct net_device *dev = mlxsw_sp_vport->dev;
	int err;

4497 4498
	if (f && !WARN_ON(!f->leave))
		f->leave(mlxsw_sp_vport);
4499

4500
	err = mlxsw_sp_vport_vfid_join(mlxsw_sp_vport, br_dev);
4501
	if (err) {
4502
		netdev_err(dev, "Failed to join vFID\n");
4503
		return err;
4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519
	}

	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
	if (err) {
		netdev_err(dev, "Failed to enable learning\n");
		goto err_port_vid_learning_set;
	}

	mlxsw_sp_vport->learning = 1;
	mlxsw_sp_vport->learning_sync = 1;
	mlxsw_sp_vport->uc_flood = 1;
	mlxsw_sp_vport->bridged = 1;

	return 0;

err_port_vid_learning_set:
4520
	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4521 4522 4523
	return err;
}

4524
static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4525 4526 4527 4528 4529
{
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);

	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);

4530
	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4531 4532 4533 4534 4535 4536 4537

	mlxsw_sp_vport->learning = 0;
	mlxsw_sp_vport->learning_sync = 0;
	mlxsw_sp_vport->uc_flood = 0;
	mlxsw_sp_vport->bridged = 0;
}

4538 4539 4540 4541 4542 4543 4544 4545
static bool
mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
				  const struct net_device *br_dev)
{
	struct mlxsw_sp_port *mlxsw_sp_vport;

	list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
			    vport.list) {
4546
		struct net_device *dev = mlxsw_sp_vport_dev_get(mlxsw_sp_vport);
4547 4548

		if (dev && dev == br_dev)
4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562
			return false;
	}

	return true;
}

static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
					  unsigned long event, void *ptr,
					  u16 vid)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct netdev_notifier_changeupper_info *info = ptr;
	struct mlxsw_sp_port *mlxsw_sp_vport;
	struct net_device *upper_dev;
4563
	int err = 0;
4564 4565 4566 4567 4568 4569 4570

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);

	switch (event) {
	case NETDEV_PRECHANGEUPPER:
		upper_dev = info->upper_dev;
		if (!netif_is_bridge_master(upper_dev))
4571
			return -EINVAL;
4572 4573
		if (!info->linking)
			break;
4574 4575 4576 4577 4578
		/* We can't have multiple VLAN interfaces configured on
		 * the same port and being members in the same bridge.
		 */
		if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
						       upper_dev))
4579
			return -EINVAL;
4580 4581 4582 4583
		break;
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
		if (info->linking) {
4584
			if (WARN_ON(!mlxsw_sp_vport))
4585
				return -EINVAL;
4586 4587 4588 4589
			err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
							 upper_dev);
		} else {
			if (!mlxsw_sp_vport)
4590
				return 0;
4591
			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
4592 4593 4594
		}
	}

4595
	return err;
4596 4597
}

4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609
static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
					      unsigned long event, void *ptr,
					      u16 vid)
{
	struct net_device *dev;
	struct list_head *iter;
	int ret;

	netdev_for_each_lower_dev(lag_dev, dev, iter) {
		if (mlxsw_sp_port_dev_check(dev)) {
			ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
							     vid);
4610
			if (ret)
4611 4612 4613 4614
				return ret;
		}
	}

4615
	return 0;
4616 4617
}

4618 4619 4620 4621 4622 4623
static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
					 unsigned long event, void *ptr)
{
	struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
	u16 vid = vlan_dev_vlan_id(vlan_dev);

4624 4625 4626 4627 4628 4629
	if (mlxsw_sp_port_dev_check(real_dev))
		return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
						      vid);
	else if (netif_is_lag_master(real_dev))
		return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
							  vid);
4630

4631
	return 0;
4632 4633
}

4634 4635 4636 4637
static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
				    unsigned long event, void *ptr)
{
	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4638
	int err = 0;
4639

4640 4641 4642
	if (event == NETDEV_CHANGEADDR || event == NETDEV_CHANGEMTU)
		err = mlxsw_sp_netdevice_router_port_event(dev);
	else if (mlxsw_sp_port_dev_check(dev))
4643 4644 4645
		err = mlxsw_sp_netdevice_port_event(dev, event, ptr);
	else if (netif_is_lag_master(dev))
		err = mlxsw_sp_netdevice_lag_event(dev, event, ptr);
4646 4647
	else if (netif_is_bridge_master(dev))
		err = mlxsw_sp_netdevice_bridge_event(dev, event, ptr);
4648 4649
	else if (is_vlan_dev(dev))
		err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
4650

4651
	return notifier_from_errno(err);
4652 4653
}

4654 4655 4656 4657
static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
	.notifier_call = mlxsw_sp_netdevice_event,
};

4658 4659 4660 4661 4662
static struct notifier_block mlxsw_sp_inetaddr_nb __read_mostly = {
	.notifier_call = mlxsw_sp_inetaddr_event,
	.priority = 10,	/* Must be called before FIB notifier block */
};

4663 4664 4665 4666
static struct notifier_block mlxsw_sp_router_netevent_nb __read_mostly = {
	.notifier_call = mlxsw_sp_router_netevent_event,
};

4667 4668 4669 4670 4671
static int __init mlxsw_sp_module_init(void)
{
	int err;

	register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4672
	register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4673 4674
	register_netevent_notifier(&mlxsw_sp_router_netevent_nb);

4675 4676 4677 4678 4679 4680
	err = mlxsw_core_driver_register(&mlxsw_sp_driver);
	if (err)
		goto err_core_driver_register;
	return 0;

err_core_driver_register:
4681
	unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4682
	unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4683 4684 4685 4686 4687 4688 4689
	unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
	return err;
}

static void __exit mlxsw_sp_module_exit(void)
{
	mlxsw_core_driver_unregister(&mlxsw_sp_driver);
4690
	unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4691
	unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4692 4693 4694 4695 4696 4697 4698 4699 4700 4701
	unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
}

module_init(mlxsw_sp_module_init);
module_exit(mlxsw_sp_module_exit);

MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
MODULE_DESCRIPTION("Mellanox Spectrum driver");
MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);