spectrum.c 120.3 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 "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;
}

struct mlxsw_sp_span_entry *mlxsw_sp_span_entry_find(struct mlxsw_sp_port *port)
{
	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;
}

struct mlxsw_sp_span_entry *mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
{
	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 */
	mlxsw_reg_mpar_pack(mpar_pl, port->local_port, type, true, pa_id);
	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 */
	mlxsw_reg_mpar_pack(mpar_pl, port->local_port, type, false, pa_id);
	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);
}

static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
					  u16 vid, bool learn_enable)
{
	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;
	mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
			      learn_enable);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
	kfree(spvmlr_pl);
	return err;
}

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);
}

585 586 587
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)
588 589 590 591
{
	char pmlp_pl[MLXSW_REG_PMLP_LEN];
	int err;

592
	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
593 594 595
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
	if (err)
		return err;
596 597
	*p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
	*p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
598
	*p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
599 600 601
	return 0;
}

602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617
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);
}

618 619 620 621 622 623 624 625 626
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);
}

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659
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;

660
	if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679
		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);
680 681 682 683 684
	/* 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;

685 686 687
	/* Due to a race we might fail here because of a full queue. In that
	 * unlikely case we simply drop the packet.
	 */
688
	err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
689 690 691 692 693 694 695 696 697 698 699 700 701 702

	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;
}

703 704 705 706
static void mlxsw_sp_set_rx_mode(struct net_device *dev)
{
}

707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
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;
}

723
static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
724
				 bool pause_en, bool pfc_en, u16 delay)
725 726
{
	u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
727

728 729
	delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
			 MLXSW_SP_PAUSE_DELAY;
730

731
	if (pause_en || pfc_en)
732
		mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
733 734
						    pg_size + delay, pg_size);
	else
735
		mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
736 737 738
}

int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
739 740
				 u8 *prio_tc, bool pause_en,
				 struct ieee_pfc *my_pfc)
741 742
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
743 744
	u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
	u16 delay = !!my_pfc ? my_pfc->delay : 0;
745
	char pbmc_pl[MLXSW_REG_PBMC_LEN];
746
	int i, j, err;
747 748 749 750 751

	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;
752 753 754

	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		bool configure = false;
755
		bool pfc = false;
756 757 758

		for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
			if (prio_tc[j] == i) {
759
				pfc = pfc_en & BIT(j);
760 761 762 763 764 765 766
				configure = true;
				break;
			}
		}

		if (!configure)
			continue;
767
		mlxsw_sp_pg_buf_pack(pbmc_pl, i, mtu, pause_en, pfc, delay);
768 769
	}

770 771 772
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
}

773
static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
774
				      int mtu, bool pause_en)
775 776 777
{
	u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
	bool dcb_en = !!mlxsw_sp_port->dcb.ets;
778
	struct ieee_pfc *my_pfc;
779 780 781
	u8 *prio_tc;

	prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
782
	my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
783

784
	return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
785
					    pause_en, my_pfc);
786 787
}

788 789 790
static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
791
	bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
792 793
	int err;

794
	err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
795 796
	if (err)
		return err;
797 798 799
	err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
	if (err)
		goto err_span_port_mtu_update;
800 801 802
	err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
	if (err)
		goto err_port_mtu_set;
803 804
	dev->mtu = mtu;
	return 0;
805 806

err_port_mtu_set:
807 808
	mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
err_span_port_mtu_update:
809
	mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
810
	return err;
811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912
}

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);
	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;
	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;
}

913
static struct mlxsw_sp_port *
914
mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
915 916 917 918 919 920 921 922 923 924 925 926 927 928 929
{
	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;
930 931
	mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
	mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
932
	mlxsw_sp_vport->vport.vid = vid;
933 934 935 936 937 938 939 940 941 942 943 944

	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);
}

945 946
static int mlxsw_sp_port_add_vid(struct net_device *dev,
				 __be16 __always_unused proto, u16 vid)
947 948
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
949
	struct mlxsw_sp_port *mlxsw_sp_vport;
950
	bool untagged = vid == 1;
951 952 953 954 955 956 957 958
	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;

959
	if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
960 961
		return 0;

962
	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
963
	if (!mlxsw_sp_vport)
964
		return -ENOMEM;
965 966 967 968 969

	/* 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.
	 */
970
	if (list_is_singular(&mlxsw_sp_port->vports_list)) {
971
		err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
972
		if (err)
973
			goto err_port_vp_mode_trans;
974 975
	}

976
	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
977
	if (err)
978 979
		goto err_port_vid_learning_set;

980
	err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
981
	if (err)
982 983 984 985 986
		goto err_port_add_vid;

	return 0;

err_port_add_vid:
987
	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
988
err_port_vid_learning_set:
989 990 991 992
	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);
993 994 995
	return err;
}

996 997
static int mlxsw_sp_port_kill_vid(struct net_device *dev,
				  __be16 __always_unused proto, u16 vid)
998 999
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1000
	struct mlxsw_sp_port *mlxsw_sp_vport;
1001
	struct mlxsw_sp_fid *f;
1002 1003 1004 1005 1006 1007 1008

	/* 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;

1009
	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
1010
	if (WARN_ON(!mlxsw_sp_vport))
1011 1012
		return 0;

1013
	mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
1014

1015
	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
1016

1017 1018 1019 1020 1021 1022
	/* 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);
1023 1024 1025 1026 1027

	/* 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.
	 */
1028 1029
	if (list_is_singular(&mlxsw_sp_port->vports_list))
		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
1030

1031 1032
	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);

1033 1034 1035
	return 0;
}

1036 1037 1038 1039
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);
1040 1041 1042
	u8 module = mlxsw_sp_port->mapping.module;
	u8 width = mlxsw_sp_port->mapping.width;
	u8 lane = mlxsw_sp_port->mapping.lane;
1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
	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;
}

1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123
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;
1124
	LIST_HEAD(actions);
1125 1126
	int err;

1127
	if (!tc_single_action(cls->exts)) {
1128 1129 1130 1131
		netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
		return -ENOTSUPP;
	}

1132 1133
	tcf_exts_to_list(cls->exts, &actions);
	list_for_each_entry(a, &actions, list) {
1134 1135 1136
		if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
			return -ENOTSUPP;

1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 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
		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;
}

1202 1203 1204 1205
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,
1206
	.ndo_setup_tc           = mlxsw_sp_setup_tc,
1207
	.ndo_set_rx_mode	= mlxsw_sp_set_rx_mode,
1208 1209 1210 1211 1212
	.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,
	.ndo_vlan_rx_add_vid	= mlxsw_sp_port_add_vid,
	.ndo_vlan_rx_kill_vid	= mlxsw_sp_port_kill_vid,
1213 1214
	.ndo_neigh_construct	= mlxsw_sp_router_neigh_construct,
	.ndo_neigh_destroy	= mlxsw_sp_router_neigh_destroy,
1215 1216 1217 1218 1219 1220
	.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,
1221
	.ndo_get_phys_port_name	= mlxsw_sp_port_get_phys_port_name,
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
};

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));
}

1242 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
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;

1271 1272 1273 1274 1275
	if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
		netdev_err(dev, "PFC already enabled on port\n");
		return -EINVAL;
	}

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
	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;
}

1304 1305 1306 1307 1308
struct mlxsw_sp_port_hw_stats {
	char str[ETH_GSTRING_LEN];
	u64 (*getter)(char *payload);
};

1309
static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 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 1381 1382 1383 1384 1385 1386 1387 1388 1389
	{
		.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)

1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426
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)

1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446
static u64 mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get(char *ppcnt_pl)
{
	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)

1447
#define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
1448 1449
					 (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
					  MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
					 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;
	}
}

1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473
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;
	}
}

1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486
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;
		}
1487 1488 1489 1490

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

1491 1492 1493
		for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
			mlxsw_sp_port_get_tc_strings(&p, i);

1494 1495 1496 1497
		break;
	}
}

1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520
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);
}

1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533
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;
1534 1535 1536 1537
	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;
1538 1539 1540 1541 1542 1543 1544 1545 1546 1547
	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)
1548 1549 1550
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1551
	struct mlxsw_sp_port_hw_stats *hw_stats;
1552
	char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1553
	int i, len;
1554 1555
	int err;

1556 1557 1558 1559
	err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
	if (err)
		return;
	mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
1560
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580
	for (i = 0; i < len; i++)
		data[data_index + i] = !err ? hw_stats[i].getter(ppcnt_pl) : 0;
}

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;
	}
1581 1582 1583 1584 1585 1586 1587

	/* 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;
	}
1588 1589 1590 1591 1592 1593
}

static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
1594
		return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814
	default:
		return -EOPNOTSUPP;
	}
}

struct mlxsw_sp_port_link_mode {
	u32 mask;
	u32 supported;
	u32 advertised;
	u32 speed;
};

static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
		.supported	= SUPPORTED_100baseT_Full,
		.advertised	= ADVERTISED_100baseT_Full,
		.speed		= 100,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
		.speed		= 100,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_SGMII |
				  MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
		.supported	= SUPPORTED_1000baseKX_Full,
		.advertised	= ADVERTISED_1000baseKX_Full,
		.speed		= 1000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
		.supported	= SUPPORTED_10000baseT_Full,
		.advertised	= ADVERTISED_10000baseT_Full,
		.speed		= 10000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
				  MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
		.supported	= SUPPORTED_10000baseKX4_Full,
		.advertised	= ADVERTISED_10000baseKX4_Full,
		.speed		= 10000,
	},
	{
		.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,
		.supported	= SUPPORTED_10000baseKR_Full,
		.advertised	= ADVERTISED_10000baseKR_Full,
		.speed		= 10000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
		.supported	= SUPPORTED_20000baseKR2_Full,
		.advertised	= ADVERTISED_20000baseKR2_Full,
		.speed		= 20000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
		.supported	= SUPPORTED_40000baseCR4_Full,
		.advertised	= ADVERTISED_40000baseCR4_Full,
		.speed		= 40000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
		.supported	= SUPPORTED_40000baseKR4_Full,
		.advertised	= ADVERTISED_40000baseKR4_Full,
		.speed		= 40000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
		.supported	= SUPPORTED_40000baseSR4_Full,
		.advertised	= ADVERTISED_40000baseSR4_Full,
		.speed		= 40000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
		.supported	= SUPPORTED_40000baseLR4_Full,
		.advertised	= ADVERTISED_40000baseLR4_Full,
		.speed		= 40000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
				  MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
				  MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
		.speed		= 25000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
				  MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
				  MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
		.speed		= 50000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
		.supported	= SUPPORTED_56000baseKR4_Full,
		.advertised	= ADVERTISED_56000baseKR4_Full,
		.speed		= 56000,
	},
	{
		.mask		= MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
				  MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
				  MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
				  MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
		.speed		= 100000,
	},
};

#define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)

static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
{
	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))
		return SUPPORTED_FIBRE;

	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))
		return SUPPORTED_Backplane;
	return 0;
}

static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
{
	u32 modes = 0;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
			modes |= mlxsw_sp_port_link_mode[i].supported;
	}
	return modes;
}

static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
{
	u32 modes = 0;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
			modes |= mlxsw_sp_port_link_mode[i].advertised;
	}
	return modes;
}

static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
					    struct ethtool_cmd *cmd)
{
	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:
	ethtool_cmd_speed_set(cmd, speed);
	cmd->duplex = duplex;
}

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;
}

static int mlxsw_sp_port_get_settings(struct net_device *dev,
				      struct ethtool_cmd *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;
	u32 eth_proto_admin;
	u32 eth_proto_oper;
	int err;

	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) {
		netdev_err(dev, "Failed to get proto");
		return err;
	}
	mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
			      &eth_proto_admin, &eth_proto_oper);

	cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
			 mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1815 1816
			 SUPPORTED_Pause | SUPPORTED_Asym_Pause |
			 SUPPORTED_Autoneg;
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 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852
	cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
	mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
					eth_proto_oper, cmd);

	eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
	cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
	cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);

	cmd->transceiver = XCVR_INTERNAL;
	return 0;
}

static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
{
	u32 ptys_proto = 0;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
		if (advertising & mlxsw_sp_port_link_mode[i].advertised)
			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;
}

1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
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;
}

1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905
static int mlxsw_sp_port_set_settings(struct net_device *dev,
				      struct ethtool_cmd *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 speed;
	u32 eth_proto_new;
	u32 eth_proto_cap;
	u32 eth_proto_admin;
	int err;

	speed = ethtool_cmd_speed(cmd);

	eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
		mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
		mlxsw_sp_to_ptys_speed(speed);

	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) {
		netdev_err(dev, "Failed to get proto");
		return err;
	}
	mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);

	eth_proto_new = eth_proto_new & eth_proto_cap;
	if (!eth_proto_new) {
		netdev_err(dev, "Not supported proto admin requested");
		return -EINVAL;
	}
	if (eth_proto_new == eth_proto_admin)
		return 0;

	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);
	if (err) {
		netdev_err(dev, "Failed to set proto admin");
		return err;
	}

1906
	if (!netif_running(dev))
1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926
		return 0;

	err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
	if (err) {
		netdev_err(dev, "Failed to set admin status");
		return err;
	}

	err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
	if (err) {
		netdev_err(dev, "Failed to set admin status");
		return err;
	}

	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,
1927 1928
	.get_pauseparam		= mlxsw_sp_port_get_pauseparam,
	.set_pauseparam		= mlxsw_sp_port_set_pauseparam,
1929
	.get_strings		= mlxsw_sp_port_get_strings,
1930
	.set_phys_id		= mlxsw_sp_port_set_phys_id,
1931 1932 1933 1934 1935 1936
	.get_ethtool_stats	= mlxsw_sp_port_get_stats,
	.get_sset_count		= mlxsw_sp_port_get_sset_count,
	.get_settings		= mlxsw_sp_port_get_settings,
	.set_settings		= mlxsw_sp_port_set_settings,
};

1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950
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);
}

1951 1952 1953
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)
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965
{
	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);
}

1966 1967 1968
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)
1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
{
	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);
}

1980 1981
int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
			      u8 switch_prio, u8 tclass)
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 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 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052
{
	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;
}

2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064
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);
}

2065
static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
2066
				bool split, u8 module, u8 width, u8 lane)
2067 2068 2069
{
	struct mlxsw_sp_port *mlxsw_sp_port;
	struct net_device *dev;
2070
	size_t bytes;
2071 2072 2073 2074 2075 2076 2077 2078 2079
	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;
2080
	mlxsw_sp_port->split = split;
2081 2082 2083
	mlxsw_sp_port->mapping.module = module;
	mlxsw_sp_port->mapping.width = width;
	mlxsw_sp_port->mapping.lane = lane;
2084 2085 2086 2087 2088 2089
	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
2090 2091 2092 2093 2094
	mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
	if (!mlxsw_sp_port->untagged_vlans) {
		err = -ENOMEM;
		goto err_port_untagged_vlans_alloc;
	}
2095
	INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
2096
	INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);
2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117

	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;
	}

	dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
	dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;

	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 |
2118 2119
			 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
	dev->hw_features |= NETIF_F_HW_TC;
2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139

	/* Each packet needs to have a Tx header (metadata) on top all other
	 * headers.
	 */
	dev->hard_header_len += MLXSW_TXHDR_LEN;

	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;
	}

	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;
	}

2140 2141 2142 2143 2144 2145 2146
	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;
	}

2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164
	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;
	}

2165 2166 2167 2168 2169 2170 2171
	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;
	}

2172 2173 2174 2175 2176 2177 2178 2179
	/* 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;
	}

2180 2181 2182 2183 2184 2185 2186
	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;
	}

2187
	mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
2188
	mlxsw_sp->ports[local_port] = mlxsw_sp_port;
2189 2190 2191 2192 2193 2194 2195
	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;
	}

2196 2197 2198 2199 2200 2201 2202 2203
	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
2204

2205 2206
	return 0;

2207
err_core_port_init:
2208 2209
	unregister_netdev(dev);
err_register_netdev:
2210
	mlxsw_sp->ports[local_port] = NULL;
2211
	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2212 2213
	mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
err_port_pvid_vport_create:
2214
	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2215
err_port_dcb_init:
2216
err_port_ets_init:
2217 2218 2219
err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
2220
err_port_speed_by_width_set:
2221
	mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2222 2223 2224 2225 2226
err_port_swid_set:
err_port_system_port_mapping_set:
err_dev_addr_init:
	free_percpu(mlxsw_sp_port->pcpu_stats);
err_alloc_stats:
E
Elad Raz 已提交
2227 2228
	kfree(mlxsw_sp_port->untagged_vlans);
err_port_untagged_vlans_alloc:
2229 2230
	kfree(mlxsw_sp_port->active_vlans);
err_port_active_vlans_alloc:
2231 2232 2233 2234 2235 2236 2237 2238 2239 2240
	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;
2241
	mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
2242
	unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
2243
	mlxsw_sp->ports[local_port] = NULL;
2244
	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2245
	mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2246
	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2247 2248
	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);
2249
	free_percpu(mlxsw_sp_port->pcpu_stats);
E
Elad Raz 已提交
2250
	kfree(mlxsw_sp_port->untagged_vlans);
2251
	kfree(mlxsw_sp_port->active_vlans);
2252
	WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266
	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)
{
2267
	u8 module, width, lane;
2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
	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++) {
2278
		err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
2279
						    &width, &lane);
2280 2281 2282 2283 2284
		if (err)
			goto err_port_module_info_get;
		if (!width)
			continue;
		mlxsw_sp->port_to_module[i] = module;
2285 2286
		err = mlxsw_sp_port_create(mlxsw_sp, i, false, module, width,
					   lane);
2287 2288 2289 2290 2291 2292
		if (err)
			goto err_port_create;
	}
	return 0;

err_port_create:
2293
err_port_module_info_get:
2294 2295 2296 2297 2298 2299
	for (i--; i >= 1; i--)
		mlxsw_sp_port_remove(mlxsw_sp, i);
	kfree(mlxsw_sp->ports);
	return err;
}

2300 2301 2302 2303 2304 2305 2306
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;
}

2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327
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,
2328
					   module, width, i * width);
2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376
		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,
2377
				     width, 0);
2378 2379 2380
	}
}

2381 2382
static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
			       unsigned int count)
2383
{
2384
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396
	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;
	}

2397 2398 2399
	module = mlxsw_sp_port->mapping.module;
	cur_width = mlxsw_sp_port->mapping.width;

2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428
	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);

2429 2430 2431 2432
	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;
2433 2434 2435 2436
	}

	return 0;

2437 2438
err_port_split_create:
	mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2439 2440 2441
	return err;
}

2442
static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
2443
{
2444
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2445
	struct mlxsw_sp_port *mlxsw_sp_port;
2446
	u8 cur_width, base_port;
2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461
	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;
	}

2462
	cur_width = mlxsw_sp_port->mapping.width;
2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473
	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);

2474
	mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2475 2476 2477 2478

	return 0;
}

2479 2480 2481 2482 2483 2484 2485 2486 2487 2488
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];
2489
	if (!mlxsw_sp_port)
2490 2491 2492 2493 2494 2495 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 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 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 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644
		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);
}

static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_FDB_MC,
	},
	/* Traps for specific L2 packet types, not trapped as FDB MC */
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_STP,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_LACP,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_EAPOL,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_LLDP,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_MMRP,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_MVRP,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_RPVST,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_DHCP,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
	},
2645 2646 2647 2648 2649 2650 2651 2652 2653 2654
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_ARPBC,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_ARPUC,
	},
2655 2656 2657 2658 2659 2660 2661 2662 2663 2664
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_MTUERROR,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_TTLERROR,
	},
2665 2666 2667 2668 2669
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_LBERROR,
	},
2670 2671 2672 2673 2674
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_OSPF,
	},
2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_IP2ME,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_RTR_INGRESS0,
	},
	{
		.func = mlxsw_sp_rx_listener_func,
		.local_port = MLXSW_PORT_DONT_CARE,
		.trap_id = MLXSW_TRAP_ID_HOST_MISS_IPV4,
	},
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
};

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;

		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
				    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--) {
2730
		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746
				    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++) {
2747
		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764
				    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];

2765
	if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2766
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2767
	else
2768
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2769 2770 2771 2772 2773

	if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
		flood_table = MLXSW_SP_FLOOD_TABLE_UC;
	else
		flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801

	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;
}

2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817
static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
{
	char slcr_pl[MLXSW_REG_SLCR_LEN];

	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);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
}

2818
static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
2819 2820
			 const struct mlxsw_bus_info *mlxsw_bus_info)
{
2821
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2822 2823 2824 2825
	int err;

	mlxsw_sp->core = mlxsw_core;
	mlxsw_sp->bus_info = mlxsw_bus_info;
2826
	INIT_LIST_HEAD(&mlxsw_sp->fids);
2827
	INIT_LIST_HEAD(&mlxsw_sp->vfids.list);
2828
	INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2829 2830 2831 2832 2833 2834 2835 2836 2837 2838

	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");
2839
		return err;
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859
	}

	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;
	}

2860 2861 2862 2863 2864 2865
	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;
	}

2866 2867 2868 2869 2870 2871
	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;
	}

2872 2873 2874 2875 2876 2877
	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;
	}

2878 2879 2880 2881 2882 2883
	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;
	}

2884 2885 2886 2887 2888 2889
	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;
	}

2890 2891
	return 0;

2892
err_ports_create:
2893 2894
	mlxsw_sp_span_fini(mlxsw_sp);
err_span_init:
2895 2896
	mlxsw_sp_router_fini(mlxsw_sp);
err_router_init:
2897
	mlxsw_sp_switchdev_fini(mlxsw_sp);
2898
err_switchdev_init:
2899
err_lag_init:
2900
	mlxsw_sp_buffers_fini(mlxsw_sp);
2901 2902 2903 2904 2905 2906 2907 2908
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;
}

2909
static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
2910
{
2911
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2912
	int i;
2913

2914
	mlxsw_sp_ports_remove(mlxsw_sp);
2915
	mlxsw_sp_span_fini(mlxsw_sp);
2916
	mlxsw_sp_router_fini(mlxsw_sp);
2917
	mlxsw_sp_switchdev_fini(mlxsw_sp);
2918
	mlxsw_sp_buffers_fini(mlxsw_sp);
2919 2920
	mlxsw_sp_traps_fini(mlxsw_sp);
	mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2921
	WARN_ON(!list_empty(&mlxsw_sp->vfids.list));
2922
	WARN_ON(!list_empty(&mlxsw_sp->fids));
2923 2924
	for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
		WARN_ON_ONCE(mlxsw_sp->rifs[i]);
2925 2926 2927 2928 2929 2930
}

static struct mlxsw_config_profile mlxsw_sp_config_profile = {
	.used_max_vepa_channels		= 1,
	.max_vepa_channels		= 0,
	.used_max_lag			= 1,
2931
	.max_lag			= MLXSW_SP_LAG_MAX,
2932
	.used_max_port_per_lag		= 1,
2933
	.max_port_per_lag		= MLXSW_SP_PORT_PER_LAG_MAX,
2934
	.used_max_mid			= 1,
2935
	.max_mid			= MLXSW_SP_MID_MAX,
2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
	.used_max_pgt			= 1,
	.max_pgt			= 0,
	.used_max_system_port		= 1,
	.max_system_port		= 64,
	.used_max_vlan_groups		= 1,
	.max_vlan_groups		= 127,
	.used_max_regions		= 1,
	.max_regions			= 400,
	.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,
2949 2950
	.max_fid_flood_tables		= 2,
	.fid_flood_table_size		= MLXSW_SP_VFID_MAX,
2951 2952 2953 2954
	.used_max_ib_mc			= 1,
	.max_ib_mc			= 0,
	.used_max_pkey			= 1,
	.max_pkey			= 0,
2955 2956 2957 2958
	.used_kvd_sizes			= 1,
	.kvd_linear_size		= MLXSW_SP_KVD_LINEAR_SIZE,
	.kvd_hash_single_size		= MLXSW_SP_KVD_HASH_SINGLE_SIZE,
	.kvd_hash_double_size		= MLXSW_SP_KVD_HASH_DOUBLE_SIZE,
2959 2960 2961 2962 2963 2964
	.swid_config			= {
		{
			.used_type	= 1,
			.type		= MLXSW_PORT_SWID_TYPE_ETH,
		}
	},
2965
	.resource_query_enable		= 1,
2966 2967 2968
};

static struct mlxsw_driver mlxsw_sp_driver = {
2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988
	.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,
2989 2990
};

2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050
static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
{
	return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
}

static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev)
{
	struct net_device *lower_dev;
	struct list_head *iter;

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

	netdev_for_each_all_lower_dev(dev, lower_dev, iter) {
		if (mlxsw_sp_port_dev_check(lower_dev))
			return netdev_priv(lower_dev);
	}
	return NULL;
}

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)
{
	struct net_device *lower_dev;
	struct list_head *iter;

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

	netdev_for_each_all_lower_dev_rcu(dev, lower_dev, iter) {
		if (mlxsw_sp_port_dev_check(lower_dev))
			return netdev_priv(lower_dev);
	}
	return NULL;
}

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);
}

3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 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 3274 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
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)
{
	int i;

	for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
		if (!mlxsw_sp->rifs[i])
			return i;

	return MLXSW_SP_RIF_MAX;
}

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);
	if (rif == MLXSW_SP_RIF_MAX)
		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);
}

3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326
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);
}

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
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;
}

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
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);
	if (rif == MLXSW_SP_RIF_MAX)
		return -ERANGE;

3396
	err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
3397 3398 3399
	if (err)
		return err;

3400 3401 3402 3403
	err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true);
	if (err)
		goto err_rif_bridge_op;

3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424
	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);
3425 3426
err_rif_bridge_op:
	mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445
	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);

3446 3447
	mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);

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 3473 3474 3475 3476
	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;
}

3477 3478 3479 3480
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);
3481
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev);
3482 3483 3484 3485 3486 3487 3488 3489
	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);
3490 3491 3492 3493
	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);
3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518

	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);
3519 3520
	else if (netif_is_bridge_master(dev))
		err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event);
3521 3522 3523 3524 3525 3526 3527
	else if (is_vlan_dev(dev))
		err = mlxsw_sp_inetaddr_vlan_event(dev, event);

out:
	return notifier_from_errno(err);
}

3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584
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;
}

3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595
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)
3596 3597
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3598 3599 3600
	u8 local_port = mlxsw_sp_port->local_port;
	u16 lag_id = mlxsw_sp_port->lag_id;
	int i, count = 0;
3601

3602 3603
	if (!mlxsw_sp_port->lagged)
		return true;
3604

3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615
	for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
		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;
3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629
}

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
3630 3631 3632
	netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using Port=%d, FID=%d\n",
		   mlxsw_sp_port->local_port, fid);

3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646
	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
3647 3648 3649
	netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using LAG ID=%d, FID=%d\n",
		   mlxsw_sp_port->lag_id, fid);

3650 3651 3652
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}

3653
int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
3654
{
3655 3656
	if (!mlxsw_sp_port_fdb_should_flush(mlxsw_sp_port, fid))
		return 0;
3657

3658 3659
	if (mlxsw_sp_port->lagged)
		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port,
3660 3661
							     fid);
	else
3662
		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, fid);
3663 3664
}

3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675
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);
}

3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691
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)
{
3692
	if (--mlxsw_sp->master_bridge.ref_count == 0) {
3693
		mlxsw_sp->master_bridge.dev = NULL;
3694 3695 3696 3697 3698 3699 3700
		/* 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);
	}
3701 3702 3703 3704
}

static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
				     struct net_device *br_dev)
3705 3706 3707 3708 3709 3710 3711 3712 3713 3714
{
	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);
3715 3716
	if (err)
		return err;
3717

3718 3719
	mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev);

3720 3721 3722 3723 3724 3725
	mlxsw_sp_port->learning = 1;
	mlxsw_sp_port->learning_sync = 1;
	mlxsw_sp_port->uc_flood = 1;
	mlxsw_sp_port->bridged = 1;

	return 0;
3726 3727
}

3728
static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3729 3730
{
	struct net_device *dev = mlxsw_sp_port->dev;
3731

3732 3733
	mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);

3734 3735
	mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);

3736 3737 3738
	mlxsw_sp_port->learning = 0;
	mlxsw_sp_port->learning_sync = 0;
	mlxsw_sp_port->uc_flood = 0;
3739
	mlxsw_sp_port->bridged = 0;
3740 3741 3742 3743

	/* Add implicit VLAN interface in the device, so that untagged
	 * packets will be classified to the default vFID.
	 */
3744
	mlxsw_sp_port_add_vid(dev, 0, 1);
3745 3746
}

3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859
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)
{
	struct mlxsw_sp_upper *lag;
	int free_lag_id = -1;
	int i;

	for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
		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)
{
	int i;

	for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
		if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
			*p_port_index = i;
			return 0;
		}
	}
	return -EBUSY;
}

3860 3861 3862 3863 3864
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;
3865
	struct mlxsw_sp_fid *f;
3866 3867 3868 3869 3870

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

3871 3872 3873 3874 3875 3876 3877
	/* 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);

3878 3879 3880 3881 3882 3883 3884 3885
	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;
3886
	struct mlxsw_sp_fid *f;
3887 3888 3889 3890 3891

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

3892 3893 3894 3895
	f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
	if (f)
		f->leave(mlxsw_sp_vport);

3896 3897 3898
	mlxsw_sp_vport->lagged = 0;
}

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 3926 3927 3928 3929 3930 3931 3932 3933
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++;
3934 3935 3936

	mlxsw_sp_port_pvid_vport_lag_join(mlxsw_sp_port, lag_id);

3937 3938
	return 0;

3939 3940
err_col_port_enable:
	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
3941 3942 3943 3944 3945 3946
err_col_port_add:
	if (!lag->ref_count)
		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
	return err;
}

3947 3948
static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
				    struct net_device *lag_dev)
3949 3950 3951
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	u16 lag_id = mlxsw_sp_port->lag_id;
3952
	struct mlxsw_sp_upper *lag;
3953 3954

	if (!mlxsw_sp_port->lagged)
3955
		return;
3956 3957 3958
	lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
	WARN_ON(lag->ref_count == 0);

3959 3960
	mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
3961

3962 3963
	if (mlxsw_sp_port->bridged) {
		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
3964
		mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
3965 3966
	}

3967
	if (lag->ref_count == 1)
3968
		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
3969 3970 3971 3972 3973

	mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
				     mlxsw_sp_port->local_port);
	mlxsw_sp_port->lagged = 0;
	lag->ref_count--;
3974 3975

	mlxsw_sp_port_pvid_vport_lag_leave(mlxsw_sp_port);
3976 3977
}

3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016
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);
}

4017 4018 4019 4020 4021 4022 4023
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);
4024
	if (WARN_ON(!mlxsw_sp_vport))
4025 4026 4027 4028 4029 4030 4031
		return -EINVAL;

	mlxsw_sp_vport->dev = vlan_dev;

	return 0;
}

4032 4033
static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
				      struct net_device *vlan_dev)
4034 4035 4036 4037 4038
{
	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);
4039
	if (WARN_ON(!mlxsw_sp_vport))
4040
		return;
4041 4042 4043 4044

	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
}

4045 4046
static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
					       unsigned long event, void *ptr)
4047 4048 4049 4050 4051
{
	struct netdev_notifier_changeupper_info *info;
	struct mlxsw_sp_port *mlxsw_sp_port;
	struct net_device *upper_dev;
	struct mlxsw_sp *mlxsw_sp;
4052
	int err = 0;
4053 4054 4055 4056 4057 4058 4059 4060

	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;
4061 4062 4063 4064
		if (!is_vlan_dev(upper_dev) &&
		    !netif_is_lag_master(upper_dev) &&
		    !netif_is_bridge_master(upper_dev))
			return -EINVAL;
4065
		if (!info->linking)
4066
			break;
4067
		/* HW limitation forbids to put ports to multiple bridges. */
4068
		if (netif_is_bridge_master(upper_dev) &&
4069
		    !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
4070
			return -EINVAL;
4071 4072 4073
		if (netif_is_lag_master(upper_dev) &&
		    !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
					       info->upper_info))
4074
			return -EINVAL;
4075 4076 4077 4078 4079
		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;
4080 4081 4082
		break;
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
4083
		if (is_vlan_dev(upper_dev)) {
4084
			if (info->linking)
4085 4086
				err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
							      upper_dev);
4087
			else
4088 4089
				 mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
							   upper_dev);
4090
		} else if (netif_is_bridge_master(upper_dev)) {
4091 4092 4093 4094
			if (info->linking)
				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
								upper_dev);
			else
4095
				mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4096
		} else if (netif_is_lag_master(upper_dev)) {
4097
			if (info->linking)
4098 4099
				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
							     upper_dev);
4100
			else
4101 4102
				mlxsw_sp_port_lag_leave(mlxsw_sp_port,
							upper_dev);
4103 4104 4105
		} else {
			err = -EINVAL;
			WARN_ON(1);
4106 4107 4108 4109
		}
		break;
	}

4110
	return err;
4111 4112
}

4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133
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;
	}

4134
	return 0;
4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147
}

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);
	}

4148
	return 0;
4149 4150
}

4151 4152 4153 4154 4155 4156 4157 4158 4159 4160
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);
4161
			if (ret)
4162 4163 4164 4165
				return ret;
		}
	}

4166
	return 0;
4167 4168
}

4169 4170
static int mlxsw_sp_master_bridge_vlan_link(struct mlxsw_sp *mlxsw_sp,
					    struct net_device *vlan_dev)
4171
{
4172
	u16 fid = vlan_dev_vlan_id(vlan_dev);
4173
	struct mlxsw_sp_fid *f;
4174

4175 4176 4177 4178 4179
	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);
4180 4181
	}

4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193
	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);
4194 4195
	if (f && f->r)
		mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232
	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;
4233 4234
}

4235
static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
4236
{
4237
	return find_first_zero_bit(mlxsw_sp->vfids.mapped,
4238
				   MLXSW_SP_VFID_MAX);
4239 4240
}

4241
static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
4242
{
4243
	char sfmr_pl[MLXSW_REG_SFMR_LEN];
4244

4245 4246
	mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
4247 4248
}

4249
static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
4250

4251 4252
static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
						 struct net_device *br_dev)
4253 4254
{
	struct device *dev = mlxsw_sp->bus_info->dev;
4255
	struct mlxsw_sp_fid *f;
4256
	u16 vfid, fid;
4257 4258
	int err;

4259
	vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
4260
	if (vfid == MLXSW_SP_VFID_MAX) {
4261 4262 4263 4264
		dev_err(dev, "No available vFIDs\n");
		return ERR_PTR(-ERANGE);
	}

4265 4266
	fid = mlxsw_sp_vfid_to_fid(vfid);
	err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
4267
	if (err) {
4268
		dev_err(dev, "Failed to create FID=%d\n", fid);
4269 4270 4271
		return ERR_PTR(err);
	}

4272 4273
	f = kzalloc(sizeof(*f), GFP_KERNEL);
	if (!f)
4274 4275
		goto err_allocate_vfid;

4276
	f->leave = mlxsw_sp_vport_vfid_leave;
4277 4278
	f->fid = fid;
	f->dev = br_dev;
4279

4280 4281
	list_add(&f->list, &mlxsw_sp->vfids.list);
	set_bit(vfid, mlxsw_sp->vfids.mapped);
4282

4283
	return f;
4284 4285

err_allocate_vfid:
4286
	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4287 4288 4289
	return ERR_PTR(-ENOMEM);
}

4290 4291
static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
				  struct mlxsw_sp_fid *f)
4292
{
4293
	u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
4294
	u16 fid = f->fid;
4295

4296
	clear_bit(vfid, mlxsw_sp->vfids.mapped);
4297
	list_del(&f->list);
4298

4299 4300
	if (f->r)
		mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4301

4302
	kfree(f);
4303 4304

	mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4305 4306
}

4307 4308 4309 4310 4311 4312 4313 4314 4315 4316
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);
}

4317 4318
static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
				    struct net_device *br_dev)
4319
{
4320
	struct mlxsw_sp_fid *f;
4321 4322
	int err;

4323
	f = mlxsw_sp_vfid_find(mlxsw_sp_vport->mlxsw_sp, br_dev);
4324
	if (!f) {
4325
		f = mlxsw_sp_vfid_create(mlxsw_sp_vport->mlxsw_sp, br_dev);
4326 4327
		if (IS_ERR(f))
			return PTR_ERR(f);
4328 4329
	}

4330 4331 4332
	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
	if (err)
		goto err_vport_flood_set;
4333

4334 4335
	err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
	if (err)
4336
		goto err_vport_fid_map;
4337

4338
	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
4339
	f->ref_count++;
4340

I
Ido Schimmel 已提交
4341 4342
	netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", f->fid);

4343
	return 0;
4344

4345 4346 4347
err_vport_fid_map:
	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
err_vport_flood_set:
4348
	if (!f->ref_count)
4349
		mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4350 4351
	return err;
}
4352

4353
static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4354
{
4355
	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4356

I
Ido Schimmel 已提交
4357 4358
	netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);

4359
	mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
4360

4361 4362
	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);

4363 4364
	mlxsw_sp_port_fdb_flush(mlxsw_sp_vport, f->fid);

4365
	mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
4366
	if (--f->ref_count == 0)
4367
		mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4368 4369 4370 4371 4372
}

static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
				      struct net_device *br_dev)
{
4373
	struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4374 4375 4376 4377
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
	struct net_device *dev = mlxsw_sp_vport->dev;
	int err;

4378 4379
	if (f && !WARN_ON(!f->leave))
		f->leave(mlxsw_sp_vport);
4380

4381
	err = mlxsw_sp_vport_vfid_join(mlxsw_sp_vport, br_dev);
4382
	if (err) {
4383
		netdev_err(dev, "Failed to join vFID\n");
4384
		return err;
4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400
	}

	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:
4401
	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4402 4403 4404
	return err;
}

4405
static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4406 4407 4408 4409 4410
{
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);

	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);

4411
	mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4412 4413 4414 4415 4416 4417 4418

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

4419 4420 4421 4422 4423 4424 4425 4426
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) {
4427
		struct net_device *dev = mlxsw_sp_vport_dev_get(mlxsw_sp_vport);
4428 4429

		if (dev && dev == br_dev)
4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443
			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;
4444
	int err = 0;
4445 4446 4447 4448 4449 4450 4451

	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))
4452
			return -EINVAL;
4453 4454
		if (!info->linking)
			break;
4455 4456 4457 4458 4459
		/* 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))
4460
			return -EINVAL;
4461 4462 4463 4464
		break;
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
		if (info->linking) {
4465
			if (WARN_ON(!mlxsw_sp_vport))
4466
				return -EINVAL;
4467 4468 4469 4470
			err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
							 upper_dev);
		} else {
			if (!mlxsw_sp_vport)
4471
				return 0;
4472
			mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
4473 4474 4475
		}
	}

4476
	return err;
4477 4478
}

4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490
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);
4491
			if (ret)
4492 4493 4494 4495
				return ret;
		}
	}

4496
	return 0;
4497 4498
}

4499 4500 4501 4502 4503 4504
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);

4505 4506 4507 4508 4509 4510
	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);
4511

4512
	return 0;
4513 4514
}

4515 4516 4517 4518
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);
4519
	int err = 0;
4520

4521 4522 4523
	if (event == NETDEV_CHANGEADDR || event == NETDEV_CHANGEMTU)
		err = mlxsw_sp_netdevice_router_port_event(dev);
	else if (mlxsw_sp_port_dev_check(dev))
4524 4525 4526
		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);
4527 4528
	else if (netif_is_bridge_master(dev))
		err = mlxsw_sp_netdevice_bridge_event(dev, event, ptr);
4529 4530
	else if (is_vlan_dev(dev))
		err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
4531

4532
	return notifier_from_errno(err);
4533 4534
}

4535 4536 4537 4538
static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
	.notifier_call = mlxsw_sp_netdevice_event,
};

4539 4540 4541 4542 4543
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 */
};

4544 4545 4546 4547 4548
static int __init mlxsw_sp_module_init(void)
{
	int err;

	register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4549
	register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4550 4551 4552 4553 4554 4555
	err = mlxsw_core_driver_register(&mlxsw_sp_driver);
	if (err)
		goto err_core_driver_register;
	return 0;

err_core_driver_register:
4556
	unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4557 4558 4559 4560 4561 4562 4563
	unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
	return err;
}

static void __exit mlxsw_sp_module_exit(void)
{
	mlxsw_core_driver_unregister(&mlxsw_sp_driver);
4564
	unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4565 4566 4567 4568 4569 4570 4571 4572 4573 4574
	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);