spectrum.c 96.0 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/dcbnl.h>
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#include <net/switchdev.h>
#include <generated/utsrelease.h>

#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);

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;
}

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_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
					 bool *p_is_up)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char paos_pl[MLXSW_REG_PAOS_LEN];
	u8 oper_status;
	int err;

	mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
	if (err)
		return err;
	oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
	*p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
	return 0;
}

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_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
				       u16 vid, enum mlxsw_reg_spms_state state)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char *spms_pl;
	int err;

	spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
	if (!spms_pl)
		return -ENOMEM;
	mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
	mlxsw_reg_spms_vid_pack(spms_pl, vid, state);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
	kfree(spms_pl);
	return err;
}

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);
}

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;
	char pspa_pl[MLXSW_REG_PSPA_LEN];

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

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);
}

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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)
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{
	char pmlp_pl[MLXSW_REG_PMLP_LEN];
	int err;

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	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
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	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
	if (err)
		return err;
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	*p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
	*p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
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	*p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
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	return 0;
}

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static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
					 u8 local_port, u8 *p_module,
					 u8 *p_width)
{
	u8 lane;

	return __mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, p_module,
					       p_width, &lane);
}

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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);
}

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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);
}

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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;

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	if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
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		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);
	len = skb->len;
	/* Due to a race we might fail here because of a full queue. In that
	 * unlikely case we simply drop the packet.
	 */
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	err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
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	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;
}

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static void mlxsw_sp_set_rx_mode(struct net_device *dev)
{
}

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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;
}

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static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
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				 bool pause_en, bool pfc_en, u16 delay)
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{
	u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
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	delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
			 MLXSW_SP_PAUSE_DELAY;
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	if (pause_en || pfc_en)
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		mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
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						    pg_size + delay, pg_size);
	else
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		mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
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}

int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
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				 u8 *prio_tc, bool pause_en,
				 struct ieee_pfc *my_pfc)
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{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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	u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
	u16 delay = !!my_pfc ? my_pfc->delay : 0;
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	char pbmc_pl[MLXSW_REG_PBMC_LEN];
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	int i, j, err;
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	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;
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	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
		bool configure = false;
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		bool pfc = false;
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		for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
			if (prio_tc[j] == i) {
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				pfc = pfc_en & BIT(j);
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				configure = true;
				break;
			}
		}

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

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

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static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
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				      int mtu, bool pause_en)
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{
	u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
	bool dcb_en = !!mlxsw_sp_port->dcb.ets;
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	struct ieee_pfc *my_pfc;
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	u8 *prio_tc;

	prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
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	my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
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	return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
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					    pause_en, my_pfc);
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}

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static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
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	bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
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	int err;

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	err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
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	if (err)
		return err;
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	err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
	if (err)
		goto err_port_mtu_set;
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	dev->mtu = mtu;
	return 0;
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err_port_mtu_set:
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	mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
534
	return err;
535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636
}

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;
}

637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739
static struct mlxsw_sp_vfid *
mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
{
	struct mlxsw_sp_vfid *vfid;

	list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
		if (vfid->vid == vid)
			return vfid;
	}

	return NULL;
}

static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
{
	return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
				   MLXSW_SP_VFID_PORT_MAX);
}

static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
{
	u16 fid = mlxsw_sp_vfid_to_fid(vfid);
	char sfmr_pl[MLXSW_REG_SFMR_LEN];

	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}

static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
{
	u16 fid = mlxsw_sp_vfid_to_fid(vfid);
	char sfmr_pl[MLXSW_REG_SFMR_LEN];

	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}

static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
						  u16 vid)
{
	struct device *dev = mlxsw_sp->bus_info->dev;
	struct mlxsw_sp_vfid *vfid;
	u16 n_vfid;
	int err;

	n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
	if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
		dev_err(dev, "No available vFIDs\n");
		return ERR_PTR(-ERANGE);
	}

	err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
	if (err) {
		dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
		return ERR_PTR(err);
	}

	vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
	if (!vfid)
		goto err_allocate_vfid;

	vfid->vfid = n_vfid;
	vfid->vid = vid;

	list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
	set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);

	return vfid;

err_allocate_vfid:
	__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
	return ERR_PTR(-ENOMEM);
}

static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
				  struct mlxsw_sp_vfid *vfid)
{
	clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
	list_del(&vfid->list);

	__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);

	kfree(vfid);
}

static struct mlxsw_sp_port *
mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
			   struct mlxsw_sp_vfid *vfid)
{
	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;
740 741
	mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
	mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
742 743 744 745 746 747 748 749 750 751 752 753 754 755
	mlxsw_sp_vport->vport.vfid = vfid;
	mlxsw_sp_vport->vport.vid = vfid->vid;

	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);
}

756 757 758 759 760
int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
			  u16 vid)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
761 762
	struct mlxsw_sp_port *mlxsw_sp_vport;
	struct mlxsw_sp_vfid *vfid;
763 764 765 766 767 768 769 770
	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;

771
	if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
772 773 774 775
		netdev_warn(dev, "VID=%d already configured\n", vid);
		return 0;
	}

776 777 778 779 780 781 782
	vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
	if (!vfid) {
		vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
		if (IS_ERR(vfid)) {
			netdev_err(dev, "Failed to create vFID for VID=%d\n",
				   vid);
			return PTR_ERR(vfid);
783
		}
784
	}
785

786 787 788 789 790 791 792 793 794
	mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
	if (!mlxsw_sp_vport) {
		netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
		err = -ENOMEM;
		goto err_port_vport_create;
	}

	if (!vfid->nr_vports) {
		err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
795
					       true, false);
796
		if (err) {
797 798 799
			netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
				   vfid->vfid);
			goto err_vport_flood_set;
800 801 802 803 804 805 806
		}
	}

	/* 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.
	 */
807
	if (list_is_singular(&mlxsw_sp_port->vports_list)) {
808 809 810
		err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
		if (err) {
			netdev_err(dev, "Failed to set to Virtual mode\n");
811
			goto err_port_vp_mode_trans;
812 813 814
		}
	}

815
	err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
816
					   MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
817 818 819
					   true,
					   mlxsw_sp_vfid_to_fid(vfid->vfid),
					   vid);
820 821
	if (err) {
		netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
822
			   vid, vfid->vfid);
823 824 825
		goto err_port_vid_to_fid_set;
	}

826
	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
827 828 829 830 831
	if (err) {
		netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
		goto err_port_vid_learning_set;
	}

832
	err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
833 834 835 836 837 838
	if (err) {
		netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
			   vid);
		goto err_port_add_vid;
	}

839
	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
840 841 842 843 844 845
					  MLXSW_REG_SPMS_STATE_FORWARDING);
	if (err) {
		netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
		goto err_port_stp_state_set;
	}

846
	vfid->nr_vports++;
847 848 849 850

	return 0;

err_port_stp_state_set:
851
	mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
852
err_port_add_vid:
853
	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
854
err_port_vid_learning_set:
855
	mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
856
				     MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
857
				     mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
858
err_port_vid_to_fid_set:
859 860 861 862
	if (list_is_singular(&mlxsw_sp_port->vports_list))
		mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
err_port_vp_mode_trans:
	if (!vfid->nr_vports)
863 864
		mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
					 false);
865 866 867 868 869
err_vport_flood_set:
	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
err_port_vport_create:
	if (!vfid->nr_vports)
		mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
870 871 872 873 874 875 876
	return err;
}

int mlxsw_sp_port_kill_vid(struct net_device *dev,
			   __be16 __always_unused proto, u16 vid)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
877 878
	struct mlxsw_sp_port *mlxsw_sp_vport;
	struct mlxsw_sp_vfid *vfid;
879 880 881 882 883 884 885 886
	int err;

	/* 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;

887 888
	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
	if (!mlxsw_sp_vport) {
889 890 891 892
		netdev_warn(dev, "VID=%d does not exist\n", vid);
		return 0;
	}

893 894 895
	vfid = mlxsw_sp_vport->vport.vfid;

	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
896 897 898 899 900 901
					  MLXSW_REG_SPMS_STATE_DISCARDING);
	if (err) {
		netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
		return err;
	}

902
	err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
903 904 905 906 907 908
	if (err) {
		netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
			   vid);
		return err;
	}

909
	err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
910 911 912 913 914
	if (err) {
		netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
		return err;
	}

915
	err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
916
					   MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
917 918
					   false,
					   mlxsw_sp_vfid_to_fid(vfid->vfid),
919 920 921
					   vid);
	if (err) {
		netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
922
			   vid, vfid->vfid);
923 924 925 926 927 928 929
		return err;
	}

	/* 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.
	 */
930
	if (list_is_singular(&mlxsw_sp_port->vports_list)) {
931 932 933 934 935 936 937
		err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
		if (err) {
			netdev_err(dev, "Failed to set to VLAN mode\n");
			return err;
		}
	}

938 939 940 941 942 943
	vfid->nr_vports--;
	mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);

	/* Destroy the vFID if no vPorts are assigned to it anymore. */
	if (!vfid->nr_vports)
		mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
944 945 946 947

	return 0;
}

948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974
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);
	u8 module, width, lane;
	int err;

	err = __mlxsw_sp_port_module_info_get(mlxsw_sp_port->mlxsw_sp,
					      mlxsw_sp_port->local_port,
					      &module, &width, &lane);
	if (err) {
		netdev_err(dev, "Failed to retrieve module information\n");
		return 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;
}

975 976 977 978
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,
979
	.ndo_set_rx_mode	= mlxsw_sp_set_rx_mode,
980 981 982 983 984 985 986 987 988 989 990
	.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,
	.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,
991
	.ndo_get_phys_port_name	= mlxsw_sp_port_get_phys_port_name,
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
};

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));
}

1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040
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;

1041 1042 1043 1044 1045
	if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
		netdev_err(dev, "PFC already enabled on port\n");
		return -EINVAL;
	}

1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073
	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;
}

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struct mlxsw_sp_port_hw_stats {
	char str[ETH_GSTRING_LEN];
	u64 (*getter)(char *payload);
};

static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
	{
		.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)

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;
		}
		break;
	}
}

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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);
}

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static void mlxsw_sp_port_get_stats(struct net_device *dev,
				    struct ethtool_stats *stats, u64 *data)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
	int i;
	int err;

1209 1210
	mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port,
			     MLXSW_REG_PPCNT_IEEE_8023_CNT, 0);
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	err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
	for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
		data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
}

static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return MLXSW_SP_PORT_HW_STATS_LEN;
	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) |
			 SUPPORTED_Pause | SUPPORTED_Asym_Pause;
	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;
}

1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489
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;
}

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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;
	bool is_up;
	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;
	}

	err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
	if (err) {
		netdev_err(dev, "Failed to get oper status");
		return err;
	}
	if (!is_up)
		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,
1558 1559
	.get_pauseparam		= mlxsw_sp_port_get_pauseparam,
	.set_pauseparam		= mlxsw_sp_port_set_pauseparam,
1560
	.get_strings		= mlxsw_sp_port_get_strings,
1561
	.set_phys_id		= mlxsw_sp_port_set_phys_id,
1562 1563 1564 1565 1566 1567
	.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,
};

1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581
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);
}

1582 1583 1584
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)
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596
{
	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);
}

1597 1598 1599
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)
1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610
{
	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);
}

1611 1612
int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
			      u8 switch_prio, u8 tclass)
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
{
	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;
}

1684 1685
static int __mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				  bool split, u8 module, u8 width)
1686 1687 1688
{
	struct mlxsw_sp_port *mlxsw_sp_port;
	struct net_device *dev;
1689
	size_t bytes;
1690 1691 1692 1693 1694 1695 1696 1697 1698
	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;
1699
	mlxsw_sp_port->split = split;
1700 1701 1702 1703 1704 1705
	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
1706 1707 1708 1709 1710
	mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
	if (!mlxsw_sp_port->untagged_vlans) {
		err = -ENOMEM;
		goto err_port_untagged_vlans_alloc;
	}
1711
	INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
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

	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 |
			 NETIF_F_HW_VLAN_CTAG_FILTER;

	/* 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;
	}

1754 1755 1756 1757 1758 1759 1760
	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;
	}

1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778
	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;
	}

1779 1780 1781 1782 1783 1784 1785
	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;
	}

1786 1787 1788 1789 1790 1791 1792 1793
	/* 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;
	}

1794 1795 1796 1797 1798 1799 1800 1801
	mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
	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;
	}

1802 1803 1804 1805 1806 1807 1808 1809
	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
1810

1811 1812 1813 1814 1815 1816 1817 1818
	err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
	if (err)
		goto err_port_vlan_init;

	mlxsw_sp->ports[local_port] = mlxsw_sp_port;
	return 0;

err_port_vlan_init:
1819 1820
	mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
err_core_port_init:
1821 1822
	unregister_netdev(dev);
err_register_netdev:
1823
err_port_dcb_init:
1824
err_port_ets_init:
1825 1826 1827
err_port_buffers_init:
err_port_admin_status_set:
err_port_mtu_set:
1828
err_port_speed_by_width_set:
1829 1830 1831 1832 1833
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
1834 1835
	kfree(mlxsw_sp_port->untagged_vlans);
err_port_untagged_vlans_alloc:
1836 1837
	kfree(mlxsw_sp_port->active_vlans);
err_port_active_vlans_alloc:
1838 1839 1840 1841
	free_netdev(dev);
	return err;
}

1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863
static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
				bool split, u8 module, u8 width, u8 lane)
{
	int err;

	err = mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
				       lane);
	if (err)
		return err;

	err = __mlxsw_sp_port_create(mlxsw_sp, local_port, split, module,
				     width);
	if (err)
		goto err_port_create;

	return 0;

err_port_create:
	mlxsw_sp_port_module_unmap(mlxsw_sp, local_port);
	return err;
}

1864
static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1865
{
1866 1867
	struct net_device *dev = mlxsw_sp_port->dev;
	struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1868

1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
	list_for_each_entry_safe(mlxsw_sp_vport, tmp,
				 &mlxsw_sp_port->vports_list, vport.list) {
		u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);

		/* vPorts created for VLAN devices should already be gone
		 * by now, since we unregistered the port netdev.
		 */
		WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
		mlxsw_sp_port_kill_vid(dev, 0, vid);
	}
1879 1880 1881 1882 1883 1884 1885 1886
}

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;
1887
	mlxsw_sp->ports[local_port] = NULL;
1888
	mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
1889
	unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1890
	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
1891
	mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1892
	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1893 1894
	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);
1895
	free_percpu(mlxsw_sp_port->pcpu_stats);
E
Elad Raz 已提交
1896
	kfree(mlxsw_sp_port->untagged_vlans);
1897
	kfree(mlxsw_sp_port->active_vlans);
1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912
	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)
{
	size_t alloc_size;
1913
	u8 module, width;
1914 1915 1916 1917 1918 1919 1920 1921 1922
	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++) {
1923 1924 1925 1926 1927 1928 1929
		err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
						    &width);
		if (err)
			goto err_port_module_info_get;
		if (!width)
			continue;
		mlxsw_sp->port_to_module[i] = module;
1930
		err = __mlxsw_sp_port_create(mlxsw_sp, i, false, module, width);
1931 1932 1933 1934 1935 1936
		if (err)
			goto err_port_create;
	}
	return 0;

err_port_create:
1937
err_port_module_info_get:
1938 1939 1940 1941 1942 1943
	for (i--; i >= 1; i--)
		mlxsw_sp_port_remove(mlxsw_sp, i);
	kfree(mlxsw_sp->ports);
	return err;
}

1944 1945 1946 1947 1948 1949 1950
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;
}

1951 1952
static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
			       unsigned int count)
1953
{
1954
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 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
	struct mlxsw_sp_port *mlxsw_sp_port;
	u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
	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;
	}

	if (count != 2 && count != 4) {
		netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
		return -EINVAL;
	}

	err = mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, &module,
					    &cur_width);
	if (err) {
		netdev_err(mlxsw_sp_port->dev, "Failed to get port's width\n");
		return err;
	}

	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);

	for (i = 0; i < count; i++) {
		err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
					   module, width, i * width);
		if (err) {
			dev_err(mlxsw_sp->bus_info->dev, "Failed to create split port\n");
			goto err_port_create;
		}
	}

	return 0;

err_port_create:
	for (i--; i >= 0; i--)
		mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
	for (i = 0; i < count / 2; i++) {
		module = mlxsw_sp->port_to_module[base_port + i * 2];
		mlxsw_sp_port_create(mlxsw_sp, base_port + i * 2, false,
				     module, MLXSW_PORT_MODULE_MAX_WIDTH, 0);
	}
	return err;
}

2026
static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
2027
{
2028
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075
	struct mlxsw_sp_port *mlxsw_sp_port;
	u8 module, cur_width, base_port;
	unsigned int count;
	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;
	}

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

	err = mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, &module,
					    &cur_width);
	if (err) {
		netdev_err(mlxsw_sp_port->dev, "Failed to get port's width\n");
		return err;
	}
	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);

	for (i = 0; i < count / 2; i++) {
		module = mlxsw_sp->port_to_module[base_port + i * 2];
		err = mlxsw_sp_port_create(mlxsw_sp, base_port + i * 2, false,
					   module, MLXSW_PORT_MODULE_MAX_WIDTH,
					   0);
		if (err)
			dev_err(mlxsw_sp->bus_info->dev, "Failed to reinstantiate port\n");
	}

	return 0;
}

2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319
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];
	if (!mlxsw_sp_port) {
		dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
			 local_port);
		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,
	},
};

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--) {
		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
				    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++) {
		mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
				    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];

2320
	if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2321
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2322
	else
2323
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2324 2325 2326 2327 2328

	if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
		flood_table = MLXSW_SP_FLOOD_TABLE_UC;
	else
		flood_table = MLXSW_SP_FLOOD_TABLE_BM;
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

	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;
}

2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372
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);
}

2373
static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
2374 2375
			 const struct mlxsw_bus_info *mlxsw_bus_info)
{
2376
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2377 2378 2379 2380
	int err;

	mlxsw_sp->core = mlxsw_core;
	mlxsw_sp->bus_info = mlxsw_bus_info;
2381
	INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
2382
	INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
2383
	INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393

	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_ports_create(mlxsw_sp);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
2394
		return err;
2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420
	}

	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");
		goto err_event_register;
	}

	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;
	}

2421 2422 2423 2424 2425 2426
	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;
	}

2427 2428 2429 2430 2431 2432 2433 2434 2435
	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;
	}

	return 0;

err_switchdev_init:
2436
err_lag_init:
2437
	mlxsw_sp_buffers_fini(mlxsw_sp);
2438 2439 2440 2441 2442 2443 2444 2445 2446 2447
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);
err_event_register:
	mlxsw_sp_ports_remove(mlxsw_sp);
	return err;
}

2448
static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
2449
{
2450
	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2451

2452
	mlxsw_sp_buffers_fini(mlxsw_sp);
2453 2454 2455 2456 2457 2458 2459 2460 2461 2462
	mlxsw_sp_switchdev_fini(mlxsw_sp);
	mlxsw_sp_traps_fini(mlxsw_sp);
	mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
	mlxsw_sp_ports_remove(mlxsw_sp);
}

static struct mlxsw_config_profile mlxsw_sp_config_profile = {
	.used_max_vepa_channels		= 1,
	.max_vepa_channels		= 0,
	.used_max_lag			= 1,
2463
	.max_lag			= MLXSW_SP_LAG_MAX,
2464
	.used_max_port_per_lag		= 1,
2465
	.max_port_per_lag		= MLXSW_SP_PORT_PER_LAG_MAX,
2466
	.used_max_mid			= 1,
2467
	.max_mid			= MLXSW_SP_MID_MAX,
2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480
	.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,
2481 2482
	.max_fid_flood_tables		= 2,
	.fid_flood_table_size		= MLXSW_SP_VFID_MAX,
2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495
	.used_max_ib_mc			= 1,
	.max_ib_mc			= 0,
	.used_max_pkey			= 1,
	.max_pkey			= 0,
	.swid_config			= {
		{
			.used_type	= 1,
			.type		= MLXSW_PORT_SWID_TYPE_ETH,
		}
	},
};

static struct mlxsw_driver mlxsw_sp_driver = {
2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515
	.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,
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
static int
mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port)
{
	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);
	mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port);

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

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);

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

static int
mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port)
{
	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);
	mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);

	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);

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

static int
__mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err, last_err = 0;
	u16 vid;

	for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
		err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid);
		if (err)
			last_err = err;
	}

	return last_err;
}

static int
__mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port)
{
	int err, last_err = 0;
	u16 vid;

	for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
		err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid);
		if (err)
			last_err = err;
	}

	return last_err;
}

static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
{
	if (!list_empty(&mlxsw_sp_port->vports_list))
		if (mlxsw_sp_port->lagged)
			return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port);
		else
			return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port);
	else
		if (mlxsw_sp_port->lagged)
			return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port);
		else
			return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
}

static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
{
	u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport);
	u16 fid = mlxsw_sp_vfid_to_fid(vfid);

	if (mlxsw_sp_vport->lagged)
		return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
							     fid);
	else
		return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid);
}

2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642
static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
{
	return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
}

static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
{
	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);
2643 2644
	if (err)
		return err;
2645

2646 2647 2648 2649 2650 2651
	mlxsw_sp_port->learning = 1;
	mlxsw_sp_port->learning_sync = 1;
	mlxsw_sp_port->uc_flood = 1;
	mlxsw_sp_port->bridged = 1;

	return 0;
2652 2653
}

2654 2655
static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
				      bool flush_fdb)
2656 2657
{
	struct net_device *dev = mlxsw_sp_port->dev;
2658

2659 2660 2661
	if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port))
		netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");

2662 2663
	mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);

2664 2665 2666
	mlxsw_sp_port->learning = 0;
	mlxsw_sp_port->learning_sync = 0;
	mlxsw_sp_port->uc_flood = 0;
2667
	mlxsw_sp_port->bridged = 0;
2668 2669 2670 2671

	/* Add implicit VLAN interface in the device, so that untagged
	 * packets will be classified to the default vFID.
	 */
2672
	return mlxsw_sp_port_add_vid(dev, 0, 1);
2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695
}

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,
				       struct net_device *br_dev)
{
	if (--mlxsw_sp->master_bridge.ref_count == 0)
		mlxsw_sp->master_bridge.dev = NULL;
}

2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 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 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853
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;
}

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++;
	return 0;

err_col_port_add:
	if (!lag->ref_count)
		mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
err_col_port_enable:
	mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
	return err;
}

2854
static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2855 2856
				       struct net_device *br_dev,
				       bool flush_fdb);
2857

2858 2859 2860 2861
static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
				   struct net_device *lag_dev)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2862
	struct mlxsw_sp_port *mlxsw_sp_vport;
2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874
	struct mlxsw_sp_upper *lag;
	u16 lag_id = mlxsw_sp_port->lag_id;
	int err;

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

	err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
	if (err)
		return err;
2875
	err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2876 2877 2878
	if (err)
		return err;

2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890
	/* In case we leave a LAG device that has bridges built on top,
	 * then their teardown sequence is never issued and we need to
	 * invoke the necessary cleanup routines ourselves.
	 */
	list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
			    vport.list) {
		struct net_device *br_dev;

		if (!mlxsw_sp_vport->bridged)
			continue;

		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2891
		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false);
2892 2893 2894 2895
	}

	if (mlxsw_sp_port->bridged) {
		mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
2896
		mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
2897
		mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL);
2898 2899
	}

2900
	if (lag->ref_count == 1) {
2901 2902
		if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
			netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914
		err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
		if (err)
			return err;
	}

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

2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953
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);
}

2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982
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);
	if (!mlxsw_sp_vport) {
		WARN_ON(!mlxsw_sp_vport);
		return -EINVAL;
	}

	mlxsw_sp_vport->dev = vlan_dev;

	return 0;
}

static int mlxsw_sp_port_vlan_unlink(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);
	if (!mlxsw_sp_vport) {
		WARN_ON(!mlxsw_sp_vport);
		return -EINVAL;
	}

2983 2984 2985 2986 2987 2988 2989 2990
	/* When removing a VLAN device while still bridged we should first
	 * remove it from the bridge, as we receive the bridge's notification
	 * when the vPort is already gone.
	 */
	if (mlxsw_sp_vport->bridged) {
		struct net_device *br_dev;

		br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2991
		mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true);
2992 2993
	}

2994 2995 2996 2997 2998
	mlxsw_sp_vport->dev = mlxsw_sp_port->dev;

	return 0;
}

2999 3000
static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
					       unsigned long event, void *ptr)
3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014
{
	struct netdev_notifier_changeupper_info *info;
	struct mlxsw_sp_port *mlxsw_sp_port;
	struct net_device *upper_dev;
	struct mlxsw_sp *mlxsw_sp;
	int err;

	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;
3015 3016
		if (!info->master || !info->linking)
			break;
3017
		/* HW limitation forbids to put ports to multiple bridges. */
3018
		if (netif_is_bridge_master(upper_dev) &&
3019 3020
		    !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
			return NOTIFY_BAD;
3021 3022 3023 3024
		if (netif_is_lag_master(upper_dev) &&
		    !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
					       info->upper_info))
			return NOTIFY_BAD;
3025 3026 3027
		break;
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044
		if (is_vlan_dev(upper_dev)) {
			if (info->linking) {
				err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
							      upper_dev);
				if (err) {
					netdev_err(dev, "Failed to link VLAN device\n");
					return NOTIFY_BAD;
				}
			} else {
				err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
								upper_dev);
				if (err) {
					netdev_err(dev, "Failed to unlink VLAN device\n");
					return NOTIFY_BAD;
				}
			}
		} else if (netif_is_bridge_master(upper_dev)) {
3045 3046
			if (info->linking) {
				err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
3047
				if (err) {
3048
					netdev_err(dev, "Failed to join bridge\n");
3049 3050
					return NOTIFY_BAD;
				}
3051 3052
				mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
			} else {
3053 3054
				err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
								 true);
3055
				mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
3056 3057 3058 3059
				if (err) {
					netdev_err(dev, "Failed to leave bridge\n");
					return NOTIFY_BAD;
				}
3060
			}
3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076
		} else if (netif_is_lag_master(upper_dev)) {
			if (info->linking) {
				err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
							     upper_dev);
				if (err) {
					netdev_err(dev, "Failed to join link aggregation\n");
					return NOTIFY_BAD;
				}
			} else {
				err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
							      upper_dev);
				if (err) {
					netdev_err(dev, "Failed to leave link aggregation\n");
					return NOTIFY_BAD;
				}
			}
3077 3078 3079 3080 3081 3082 3083
		}
		break;
	}

	return NOTIFY_DONE;
}

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
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;
	}

	return NOTIFY_DONE;
}

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);
	}

	return NOTIFY_DONE;
}

3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139
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);
			if (ret == NOTIFY_BAD)
				return ret;
		}
	}

	return NOTIFY_DONE;
}

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
static struct mlxsw_sp_vfid *
mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
		      const struct net_device *br_dev)
{
	struct mlxsw_sp_vfid *vfid;

	list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
		if (vfid->br_dev == br_dev)
			return vfid;
	}

	return NULL;
}

static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
{
	return vfid - MLXSW_SP_VFID_PORT_MAX;
}

static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
{
	return MLXSW_SP_VFID_PORT_MAX + br_vfid;
}

static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
{
	return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
				   MLXSW_SP_VFID_BR_MAX);
}

static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
						     struct net_device *br_dev)
{
	struct device *dev = mlxsw_sp->bus_info->dev;
	struct mlxsw_sp_vfid *vfid;
	u16 n_vfid;
	int err;

	n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
	if (n_vfid == MLXSW_SP_VFID_MAX) {
		dev_err(dev, "No available vFIDs\n");
		return ERR_PTR(-ERANGE);
	}

	err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
	if (err) {
		dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
		return ERR_PTR(err);
	}

	vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
	if (!vfid)
		goto err_allocate_vfid;

	vfid->vfid = n_vfid;
	vfid->br_dev = br_dev;

	list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
	set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);

	return vfid;

err_allocate_vfid:
	__mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
	return ERR_PTR(-ENOMEM);
}

static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
				     struct mlxsw_sp_vfid *vfid)
{
	u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);

	clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
	list_del(&vfid->list);

	__mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);

	kfree(vfid);
}

static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
3221 3222
				       struct net_device *br_dev,
				       bool flush_fdb)
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
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
	struct net_device *dev = mlxsw_sp_vport->dev;
	struct mlxsw_sp_vfid *vfid, *new_vfid;
	int err;

	vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
	if (!vfid) {
		WARN_ON(!vfid);
		return -EINVAL;
	}

	/* We need a vFID to go back to after leaving the bridge's vFID. */
	new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
	if (!new_vfid) {
		new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
		if (IS_ERR(new_vfid)) {
			netdev_err(dev, "Failed to create vFID for VID=%d\n",
				   vid);
			return PTR_ERR(new_vfid);
		}
	}

	/* Invalidate existing {Port, VID} to vFID mapping and create a new
	 * one for the new vFID.
	 */
	err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
					   MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
					   false,
					   mlxsw_sp_vfid_to_fid(vfid->vfid),
					   vid);
	if (err) {
		netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
			   vfid->vfid);
		goto err_port_vid_to_fid_invalidate;
	}

	err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
					   MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
					   true,
					   mlxsw_sp_vfid_to_fid(new_vfid->vfid),
					   vid);
	if (err) {
		netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
			   new_vfid->vfid);
		goto err_port_vid_to_fid_validate;
	}

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

	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
				       false);
	if (err) {
		netdev_err(dev, "Failed clear to clear flooding\n");
		goto err_vport_flood_set;
	}

3285 3286 3287 3288 3289 3290 3291
	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
					  MLXSW_REG_SPMS_STATE_FORWARDING);
	if (err) {
		netdev_err(dev, "Failed to set STP state\n");
		goto err_port_stp_state_set;
	}

3292 3293 3294
	if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport))
		netdev_err(dev, "Failed to flush FDB\n");

3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308
	/* Switch between the vFIDs and destroy the old one if needed. */
	new_vfid->nr_vports++;
	mlxsw_sp_vport->vport.vfid = new_vfid;
	vfid->nr_vports--;
	if (!vfid->nr_vports)
		mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);

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

	return 0;

3309
err_port_stp_state_set:
3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468
err_vport_flood_set:
err_port_vid_learning_set:
err_port_vid_to_fid_validate:
err_port_vid_to_fid_invalidate:
	/* Rollback vFID only if new. */
	if (!new_vfid->nr_vports)
		mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
	return err;
}

static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
				      struct net_device *br_dev)
{
	struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
	u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
	struct net_device *dev = mlxsw_sp_vport->dev;
	struct mlxsw_sp_vfid *vfid;
	int err;

	vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
	if (!vfid) {
		vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
		if (IS_ERR(vfid)) {
			netdev_err(dev, "Failed to create bridge vFID\n");
			return PTR_ERR(vfid);
		}
	}

	err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
	if (err) {
		netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
			   vfid->vfid);
		goto err_port_flood_set;
	}

	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;
	}

	/* We need to invalidate existing {Port, VID} to vFID mapping and
	 * create a new one for the bridge's vFID.
	 */
	err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
					   MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
					   false,
					   mlxsw_sp_vfid_to_fid(old_vfid->vfid),
					   vid);
	if (err) {
		netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
			   old_vfid->vfid);
		goto err_port_vid_to_fid_invalidate;
	}

	err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
					   MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
					   true,
					   mlxsw_sp_vfid_to_fid(vfid->vfid),
					   vid);
	if (err) {
		netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
			   vfid->vfid);
		goto err_port_vid_to_fid_validate;
	}

	/* Switch between the vFIDs and destroy the old one if needed. */
	vfid->nr_vports++;
	mlxsw_sp_vport->vport.vfid = vfid;
	old_vfid->nr_vports--;
	if (!old_vfid->nr_vports)
		mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);

	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_to_fid_validate:
	mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
				     MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
				     mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
err_port_vid_to_fid_invalidate:
	mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
err_port_vid_learning_set:
	mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
err_port_flood_set:
	if (!vfid->nr_vports)
		mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
	return err;
}

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) {
		if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
			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;
	int err;

	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);

	switch (event) {
	case NETDEV_PRECHANGEUPPER:
		upper_dev = info->upper_dev;
		if (!info->master || !info->linking)
			break;
		if (!netif_is_bridge_master(upper_dev))
			return NOTIFY_BAD;
		/* 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))
			return NOTIFY_BAD;
		break;
	case NETDEV_CHANGEUPPER:
		upper_dev = info->upper_dev;
		if (!info->master)
			break;
		if (info->linking) {
			if (!mlxsw_sp_vport) {
				WARN_ON(!mlxsw_sp_vport);
				return NOTIFY_BAD;
			}
			err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
							 upper_dev);
			if (err) {
				netdev_err(dev, "Failed to join bridge\n");
				return NOTIFY_BAD;
			}
		} else {
			/* We ignore bridge's unlinking notifications if vPort
			 * is gone, since we already left the bridge when the
			 * VLAN device was unlinked from the real device.
			 */
			if (!mlxsw_sp_vport)
				return NOTIFY_DONE;
			err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
3469
							  upper_dev, true);
3470 3471 3472 3473 3474 3475 3476 3477 3478 3479
			if (err) {
				netdev_err(dev, "Failed to leave bridge\n");
				return NOTIFY_BAD;
			}
		}
	}

	return NOTIFY_DONE;
}

3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499
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);
			if (ret == NOTIFY_BAD)
				return ret;
		}
	}

	return NOTIFY_DONE;
}

3500 3501 3502 3503 3504 3505
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);

3506 3507 3508 3509 3510 3511
	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);
3512

3513
	return NOTIFY_DONE;
3514 3515
}

3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526
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);

	if (mlxsw_sp_port_dev_check(dev))
		return mlxsw_sp_netdevice_port_event(dev, event, ptr);

	if (netif_is_lag_master(dev))
		return mlxsw_sp_netdevice_lag_event(dev, event, ptr);

3527 3528 3529
	if (is_vlan_dev(dev))
		return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);

3530 3531 3532
	return NOTIFY_DONE;
}

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
static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
	.notifier_call = mlxsw_sp_netdevice_event,
};

static int __init mlxsw_sp_module_init(void)
{
	int err;

	register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
	err = mlxsw_core_driver_register(&mlxsw_sp_driver);
	if (err)
		goto err_core_driver_register;
	return 0;

err_core_driver_register:
	unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
	return err;
}

static void __exit mlxsw_sp_module_exit(void)
{
	mlxsw_core_driver_unregister(&mlxsw_sp_driver);
	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);