spectrum_switchdev.c 38.6 KB
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/*
 * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.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/types.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.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>
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#include <linux/rtnetlink.h>
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#include <net/switchdev.h>

#include "spectrum.h"
#include "core.h"
#include "reg.h"

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static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
					u16 vid)
{
	u16 fid = vid;

	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
		u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);

		fid = mlxsw_sp_vfid_to_fid(vfid);
	}

	if (!fid)
		fid = mlxsw_sp_port->pvid;

	return fid;
}

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static struct mlxsw_sp_port *
mlxsw_sp_port_orig_get(struct net_device *dev,
		       struct mlxsw_sp_port *mlxsw_sp_port)
{
	struct mlxsw_sp_port *mlxsw_sp_vport;
	u16 vid;

	if (!is_vlan_dev(dev))
		return mlxsw_sp_port;

	vid = vlan_dev_vlan_id(dev);
	mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
	WARN_ON(!mlxsw_sp_vport);

	return mlxsw_sp_vport;
}

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static int mlxsw_sp_port_attr_get(struct net_device *dev,
				  struct switchdev_attr *attr)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

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	mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
	if (!mlxsw_sp_port)
		return -EINVAL;

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	switch (attr->id) {
	case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
		attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
		memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
		       attr->u.ppid.id_len);
		break;
	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
		attr->u.brport_flags =
			(mlxsw_sp_port->learning ? BR_LEARNING : 0) |
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			(mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
			(mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
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		break;
	default:
		return -EOPNOTSUPP;
	}

	return 0;
}

static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
				       u8 state)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	enum mlxsw_reg_spms_state spms_state;
	char *spms_pl;
	u16 vid;
	int err;

	switch (state) {
	case BR_STATE_FORWARDING:
		spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
		break;
	case BR_STATE_LEARNING:
		spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
		break;
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	case BR_STATE_LISTENING: /* fall-through */
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	case BR_STATE_DISABLED: /* fall-through */
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	case BR_STATE_BLOCKING:
		spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
		break;
	default:
		BUG();
	}

	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);
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	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
		vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
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		mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
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	} else {
		for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
			mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
	}
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	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
	kfree(spms_pl);
	return err;
}

static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
					    struct switchdev_trans *trans,
					    u8 state)
{
	if (switchdev_trans_ph_prepare(trans))
		return 0;

	mlxsw_sp_port->stp_state = state;
	return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
}

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static bool mlxsw_sp_vfid_is_vport_br(u16 vfid)
{
	return vfid >= MLXSW_SP_VFID_PORT_MAX;
}

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static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
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				     u16 idx_begin, u16 idx_end, bool set,
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				     bool only_uc)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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	u16 local_port = mlxsw_sp_port->local_port;
	enum mlxsw_flood_table_type table_type;
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	u16 range = idx_end - idx_begin + 1;
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	char *sftr_pl;
	int err;

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	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
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		if (mlxsw_sp_vfid_is_vport_br(idx_begin))
			local_port = mlxsw_sp_port->local_port;
		else
			local_port = MLXSW_PORT_CPU_PORT;
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	} else {
		table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
	}

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

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	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
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			    table_type, range, local_port, set);
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	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
	if (err)
		goto buffer_out;

	/* Flooding control allows one to decide whether a given port will
	 * flood unicast traffic for which there is no FDB entry.
	 */
	if (only_uc)
		goto buffer_out;

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	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
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			    table_type, range, local_port, set);
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	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);

buffer_out:
	kfree(sftr_pl);
	return err;
}

static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
				      bool set)
{
	struct net_device *dev = mlxsw_sp_port->dev;
	u16 vid, last_visited_vid;
	int err;

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	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
		u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);

		return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
						  set, true);
	}

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	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
		err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
						true);
		if (err) {
			last_visited_vid = vid;
			goto err_port_flood_set;
		}
	}

	return 0;

err_port_flood_set:
	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
		__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
	netdev_err(dev, "Failed to configure unicast flooding\n");
	return err;
}

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int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
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			     bool set, bool only_uc)
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{
	/* In case of vFIDs, index into the flooding table is relative to
	 * the start of the vFIDs range.
	 */
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	return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
					 only_uc);
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}

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static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
					   struct switchdev_trans *trans,
					   unsigned long brport_flags)
{
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	unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
	bool set;
	int err;

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	if (!mlxsw_sp_port->bridged)
		return -EINVAL;

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	if (switchdev_trans_ph_prepare(trans))
		return 0;

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	if ((uc_flood ^ brport_flags) & BR_FLOOD) {
		set = mlxsw_sp_port->uc_flood ? false : true;
		err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
		if (err)
			return err;
	}

	mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
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	mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
	mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
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	return 0;
}

static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
{
	char sfdat_pl[MLXSW_REG_SFDAT_LEN];
	int err;

	mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
	if (err)
		return err;
	mlxsw_sp->ageing_time = ageing_time;
	return 0;
}

static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
					    struct switchdev_trans *trans,
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					    unsigned long ageing_clock_t)
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{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
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	u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;

	if (switchdev_trans_ph_prepare(trans))
		return 0;

	return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
}

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static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
					  struct switchdev_trans *trans,
					  struct net_device *orig_dev,
					  bool vlan_enabled)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;

	/* SWITCHDEV_TRANS_PREPARE phase */
	if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
		netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
		return -EINVAL;
	}

	return 0;
}

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static int mlxsw_sp_port_attr_set(struct net_device *dev,
				  const struct switchdev_attr *attr,
				  struct switchdev_trans *trans)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	int err = 0;

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	mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
	if (!mlxsw_sp_port)
		return -EINVAL;

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	switch (attr->id) {
	case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
		err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
						       attr->u.stp_state);
		break;
	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
		err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
						      attr->u.brport_flags);
		break;
	case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
		err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
						       attr->u.ageing_time);
		break;
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	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
		err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
						     attr->orig_dev,
						     attr->u.vlan_filtering);
		break;
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	default:
		err = -EOPNOTSUPP;
		break;
	}

	return err;
}

static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char spvid_pl[MLXSW_REG_SPVID_LEN];

	mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
}

static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
{
	char sfmr_pl[MLXSW_REG_SFMR_LEN];
	int err;

	mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);

	if (err)
		return err;

	set_bit(fid, mlxsw_sp->active_fids);
	return 0;
}

static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
{
	char sfmr_pl[MLXSW_REG_SFMR_LEN];

	clear_bit(fid, mlxsw_sp->active_fids);

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

static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
{
	enum mlxsw_reg_svfa_mt mt;

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	if (!list_empty(&mlxsw_sp_port->vports_list))
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		mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
	else
		mt = MLXSW_REG_SVFA_MT_VID_TO_FID;

	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
}

static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
{
	enum mlxsw_reg_svfa_mt mt;

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	if (list_empty(&mlxsw_sp_port->vports_list))
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		return 0;

	mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
	return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
}

static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
				  u16 vid_end)
{
	u16 vid;
	int err;

	for (vid = vid_begin; vid <= vid_end; vid++) {
		err = mlxsw_sp_port_add_vid(dev, 0, vid);
		if (err)
			goto err_port_add_vid;
	}
	return 0;

err_port_add_vid:
	for (vid--; vid >= vid_begin; vid--)
		mlxsw_sp_port_kill_vid(dev, 0, vid);
	return err;
}

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static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
				     u16 vid_begin, u16 vid_end, bool is_member,
				     bool untagged)
{
	u16 vid, vid_e;
	int err;

	for (vid = vid_begin; vid <= vid_end;
	     vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
		vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
			    vid_end);

		err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
					     is_member, untagged);
		if (err)
			return err;
	}

	return 0;
}

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static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
				     u16 vid_begin, u16 vid_end,
				     bool flag_untagged, bool flag_pvid)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	struct net_device *dev = mlxsw_sp_port->dev;
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	u16 vid, last_visited_vid, old_pvid;
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	enum mlxsw_reg_svfa_mt mt;
	int err;

	/* In case this is invoked with BRIDGE_FLAGS_SELF and port is
	 * not bridged, then packets ingressing through the port with
	 * the specified VIDs will be directed to CPU.
	 */
	if (!mlxsw_sp_port->bridged)
		return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);

	for (vid = vid_begin; vid <= vid_end; vid++) {
		if (!test_bit(vid, mlxsw_sp->active_fids)) {
			err = mlxsw_sp_fid_create(mlxsw_sp, vid);
			if (err) {
				netdev_err(dev, "Failed to create FID=%d\n",
					   vid);
				return err;
			}

			/* When creating a FID, we set a VID to FID mapping
			 * regardless of the port's mode.
			 */
			mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
			err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
							   true, vid, vid);
			if (err) {
				netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
					   vid);
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				goto err_port_vid_to_fid_set;
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			}
		}
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	}
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	/* Set FID mapping according to port's mode */
	for (vid = vid_begin; vid <= vid_end; vid++) {
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		err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
		if (err) {
			netdev_err(dev, "Failed to map FID=%d", vid);
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			last_visited_vid = --vid;
			goto err_port_fid_map;
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		}
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	}
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	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
					true, false);
	if (err) {
		netdev_err(dev, "Failed to configure flooding\n");
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		goto err_port_flood_set;
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	}

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	err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
					true, flag_untagged);
	if (err) {
		netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
			   vid_end);
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		goto err_port_vlans_set;
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	}

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	old_pvid = mlxsw_sp_port->pvid;
	if (flag_pvid && old_pvid != vid_begin) {
		err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
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		if (err) {
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			netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
			goto err_port_pvid_set;
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		}
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		mlxsw_sp_port->pvid = vid_begin;
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	}

	/* Changing activity bits only if HW operation succeded */
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Elad Raz 已提交
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	for (vid = vid_begin; vid <= vid_end; vid++) {
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		set_bit(vid, mlxsw_sp_port->active_vlans);
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Elad Raz 已提交
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		if (flag_untagged)
			set_bit(vid, mlxsw_sp_port->untagged_vlans);
		else
			clear_bit(vid, mlxsw_sp_port->untagged_vlans);
	}
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	/* STP state change must be done after we set active VLANs */
	err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
					  mlxsw_sp_port->stp_state);
	if (err) {
		netdev_err(dev, "Failed to set STP state\n");
		goto err_port_stp_state_set;
	}

	return 0;

err_port_vid_to_fid_set:
	mlxsw_sp_fid_destroy(mlxsw_sp, vid);
	return err;

err_port_stp_state_set:
	for (vid = vid_begin; vid <= vid_end; vid++)
		clear_bit(vid, mlxsw_sp_port->active_vlans);
	if (old_pvid != mlxsw_sp_port->pvid)
		mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
err_port_pvid_set:
	__mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
				  false);
err_port_vlans_set:
	__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
				  false);
err_port_flood_set:
	last_visited_vid = vid_end;
err_port_fid_map:
	for (vid = last_visited_vid; vid >= vid_begin; vid--)
		mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
	return err;
586 587 588 589 590 591
}

static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
				   const struct switchdev_obj_port_vlan *vlan,
				   struct switchdev_trans *trans)
{
592 593
	bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
	bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
594 595 596 597 598 599

	if (switchdev_trans_ph_prepare(trans))
		return 0;

	return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
					 vlan->vid_begin, vlan->vid_end,
600
					 flag_untagged, flag_pvid);
601 602
}

603
static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
604
{
605 606 607 608 609 610 611 612 613 614
	return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
			 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
}

static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
{
	return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
			MLXSW_REG_SFD_OP_WRITE_REMOVE;
}

615
static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
616
				   const char *mac, u16 fid, bool adding,
617 618
				   bool dynamic)
{
619 620 621 622 623 624 625
	char *sfd_pl;
	int err;

	sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
	if (!sfd_pl)
		return -ENOMEM;

626 627
	mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
	mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
628
			      mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
629
			      local_port);
630 631 632 633 634 635 636
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
	kfree(sfd_pl);

	return err;
}

static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
637 638
				       const char *mac, u16 fid, u16 lag_vid,
				       bool adding, bool dynamic)
639 640 641 642 643 644 645 646 647 648
{
	char *sfd_pl;
	int err;

	sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
	if (!sfd_pl)
		return -ENOMEM;

	mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
	mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
649 650
				  mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
				  lag_vid, lag_id);
651
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
652 653 654 655 656 657 658 659 660 661
	kfree(sfd_pl);

	return err;
}

static int
mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
			     const struct switchdev_obj_port_fdb *fdb,
			     struct switchdev_trans *trans)
{
662
	u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
663
	u16 lag_vid = 0;
664

665 666 667
	if (switchdev_trans_ph_prepare(trans))
		return 0;

668
	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
669
		lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
670 671
	}

672
	if (!mlxsw_sp_port->lagged)
673 674
		return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
					       mlxsw_sp_port->local_port,
675
					       fdb->addr, fid, true, false);
676 677 678
	else
		return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
						   mlxsw_sp_port->lag_id,
679 680
						   fdb->addr, fid, lag_vid,
						   true, false);
681 682
}

683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
				u16 fid, u16 mid, bool adding)
{
	char *sfd_pl;
	int err;

	sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
	if (!sfd_pl)
		return -ENOMEM;

	mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
	mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
			      MLXSW_REG_SFD_REC_ACTION_NOP, mid);
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
	kfree(sfd_pl);
	return err;
}

static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
				  bool add, bool clear_all_ports)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	char *smid_pl;
	int err, i;

	smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
	if (!smid_pl)
		return -ENOMEM;

	mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
	if (clear_all_ports) {
		for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
			if (mlxsw_sp->ports[i])
				mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
	}
	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
	kfree(smid_pl);
	return err;
}

static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
					      const unsigned char *addr,
					      u16 vid)
{
	struct mlxsw_sp_mid *mid;

	list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
		if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
			return mid;
	}
	return NULL;
}

static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
						const unsigned char *addr,
						u16 vid)
{
	struct mlxsw_sp_mid *mid;
	u16 mid_idx;

	mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
				      MLXSW_SP_MID_MAX);
	if (mid_idx == MLXSW_SP_MID_MAX)
		return NULL;

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

	set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
	ether_addr_copy(mid->addr, addr);
	mid->vid = vid;
	mid->mid = mid_idx;
	mid->ref_count = 0;
	list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);

	return mid;
}

static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
				 struct mlxsw_sp_mid *mid)
{
	if (--mid->ref_count == 0) {
		list_del(&mid->list);
		clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
		kfree(mid);
		return 1;
	}
	return 0;
}

static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
				 const struct switchdev_obj_port_mdb *mdb,
				 struct switchdev_trans *trans)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	struct net_device *dev = mlxsw_sp_port->dev;
	struct mlxsw_sp_mid *mid;
	u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
	int err = 0;

	if (switchdev_trans_ph_prepare(trans))
		return 0;

	mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
	if (!mid) {
		mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
		if (!mid) {
			netdev_err(dev, "Unable to allocate MC group\n");
			return -ENOMEM;
		}
	}
	mid->ref_count++;

	err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
				     mid->ref_count == 1);
	if (err) {
		netdev_err(dev, "Unable to set SMID\n");
		goto err_out;
	}

	if (mid->ref_count == 1) {
		err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
					   true);
		if (err) {
			netdev_err(dev, "Unable to set MC SFD\n");
			goto err_out;
		}
	}

	return 0;

err_out:
	__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
	return err;
}

820 821 822 823 824 825 826
static int mlxsw_sp_port_obj_add(struct net_device *dev,
				 const struct switchdev_obj *obj,
				 struct switchdev_trans *trans)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	int err = 0;

827 828 829 830
	mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
	if (!mlxsw_sp_port)
		return -EINVAL;

831 832
	switch (obj->id) {
	case SWITCHDEV_OBJ_ID_PORT_VLAN:
833 834 835
		if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
			return 0;

836 837 838 839 840 841 842 843 844
		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
					      SWITCHDEV_OBJ_PORT_VLAN(obj),
					      trans);
		break;
	case SWITCHDEV_OBJ_ID_PORT_FDB:
		err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
						   SWITCHDEV_OBJ_PORT_FDB(obj),
						   trans);
		break;
845 846 847 848 849
	case SWITCHDEV_OBJ_ID_PORT_MDB:
		err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
					    SWITCHDEV_OBJ_PORT_MDB(obj),
					    trans);
		break;
850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876
	default:
		err = -EOPNOTSUPP;
		break;
	}

	return err;
}

static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
				   u16 vid_end)
{
	u16 vid;
	int err;

	for (vid = vid_begin; vid <= vid_end; vid++) {
		err = mlxsw_sp_port_kill_vid(dev, 0, vid);
		if (err)
			return err;
	}

	return 0;
}

static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
				     u16 vid_begin, u16 vid_end, bool init)
{
	struct net_device *dev = mlxsw_sp_port->dev;
877
	u16 vid, pvid;
878 879 880 881 882 883 884 885 886
	int err;

	/* In case this is invoked with BRIDGE_FLAGS_SELF and port is
	 * not bridged, then prevent packets ingressing through the
	 * port with the specified VIDs from being trapped to CPU.
	 */
	if (!init && !mlxsw_sp_port->bridged)
		return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);

887 888 889 890 891 892
	err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
					false, false);
	if (err) {
		netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
			   vid_end);
		return err;
893 894
	}

895 896
	pvid = mlxsw_sp_port->pvid;
	if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
897
		/* Default VLAN is always 1 */
898
		err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
899
		if (err) {
900
			netdev_err(dev, "Unable to del PVID %d\n", pvid);
901 902
			return err;
		}
903
		mlxsw_sp_port->pvid = 1;
904 905 906 907 908
	}

	if (init)
		goto out;

909 910 911 912 913 914
	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
					false, false);
	if (err) {
		netdev_err(dev, "Failed to clear flooding\n");
		return err;
	}
915

916
	for (vid = vid_begin; vid <= vid_end; vid++) {
917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939
		/* Remove FID mapping in case of Virtual mode */
		err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
		if (err) {
			netdev_err(dev, "Failed to unmap FID=%d", vid);
			return err;
		}
	}

out:
	/* Changing activity bits only if HW operation succeded */
	for (vid = vid_begin; vid <= vid_end; vid++)
		clear_bit(vid, mlxsw_sp_port->active_vlans);

	return 0;
}

static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
				   const struct switchdev_obj_port_vlan *vlan)
{
	return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
					 vlan->vid_begin, vlan->vid_end, false);
}

940 941 942 943 944 945 946 947
void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
{
	u16 vid;

	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
		__mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
}

948 949 950 951
static int
mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
			     const struct switchdev_obj_port_fdb *fdb)
{
952
	u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
953
	u16 lag_vid = 0;
954

955
	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
956
		lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
957 958
	}

959
	if (!mlxsw_sp_port->lagged)
960 961
		return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
					       mlxsw_sp_port->local_port,
962
					       fdb->addr, fid,
963 964 965 966
					       false, false);
	else
		return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
						   mlxsw_sp_port->lag_id,
967
						   fdb->addr, fid, lag_vid,
968
						   false, false);
969 970
}

971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
				 const struct switchdev_obj_port_mdb *mdb)
{
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
	struct net_device *dev = mlxsw_sp_port->dev;
	struct mlxsw_sp_mid *mid;
	u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
	u16 mid_idx;
	int err = 0;

	mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
	if (!mid) {
		netdev_err(dev, "Unable to remove port from MC DB\n");
		return -EINVAL;
	}

	err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
	if (err)
		netdev_err(dev, "Unable to remove port from SMID\n");

	mid_idx = mid->mid;
	if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
		err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
					   false);
		if (err)
			netdev_err(dev, "Unable to remove MC SFD\n");
	}

	return err;
}

1002 1003 1004 1005 1006 1007
static int mlxsw_sp_port_obj_del(struct net_device *dev,
				 const struct switchdev_obj *obj)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	int err = 0;

1008 1009 1010 1011
	mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
	if (!mlxsw_sp_port)
		return -EINVAL;

1012 1013
	switch (obj->id) {
	case SWITCHDEV_OBJ_ID_PORT_VLAN:
1014 1015 1016
		if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
			return 0;

1017 1018 1019 1020 1021 1022 1023
		err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
					      SWITCHDEV_OBJ_PORT_VLAN(obj));
		break;
	case SWITCHDEV_OBJ_ID_PORT_FDB:
		err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
						   SWITCHDEV_OBJ_PORT_FDB(obj));
		break;
1024 1025 1026
	case SWITCHDEV_OBJ_ID_PORT_MDB:
		err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
					    SWITCHDEV_OBJ_PORT_MDB(obj));
1027
		break;
1028 1029 1030 1031 1032 1033 1034 1035
	default:
		err = -EOPNOTSUPP;
		break;
	}

	return err;
}

1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049
static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
						   u16 lag_id)
{
	struct mlxsw_sp_port *mlxsw_sp_port;
	int i;

	for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
		mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
		if (mlxsw_sp_port)
			return mlxsw_sp_port;
	}
	return NULL;
}

1050 1051
static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
				  struct switchdev_obj_port_fdb *fdb,
1052 1053
				  switchdev_obj_dump_cb_t *cb,
				  struct net_device *orig_dev)
1054
{
1055
	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1056
	struct mlxsw_sp_port *tmp;
1057
	u16 vport_fid = 0;
1058 1059
	char *sfd_pl;
	char mac[ETH_ALEN];
1060
	u16 fid;
1061
	u8 local_port;
1062
	u16 lag_id;
1063 1064 1065 1066 1067 1068 1069 1070 1071
	u8 num_rec;
	int stored_err = 0;
	int i;
	int err;

	sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
	if (!sfd_pl)
		return -ENOMEM;

1072 1073 1074 1075 1076 1077 1078
	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
		u16 tmp;

		tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
		vport_fid = mlxsw_sp_vfid_to_fid(tmp);
	}

1079 1080 1081
	mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
	do {
		mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1082
		err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
		if (err)
			goto out;

		num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);

		/* Even in case of error, we have to run the dump to the end
		 * so the session in firmware is finished.
		 */
		if (stored_err)
			continue;

		for (i = 0; i < num_rec; i++) {
			switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
			case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1097
				mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1098 1099
							&local_port);
				if (local_port == mlxsw_sp_port->local_port) {
1100 1101 1102 1103
					if (vport_fid && vport_fid == fid)
						fdb->vid = 0;
					else if (!vport_fid &&
						 !mlxsw_sp_fid_is_vfid(fid))
1104
						fdb->vid = fid;
1105 1106
					else
						continue;
1107 1108 1109 1110 1111 1112
					ether_addr_copy(fdb->addr, mac);
					fdb->ndm_state = NUD_REACHABLE;
					err = cb(&fdb->obj);
					if (err)
						stored_err = err;
				}
1113 1114 1115
				break;
			case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
				mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1116
							    mac, &fid, &lag_id);
1117 1118 1119
				tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
				if (tmp && tmp->local_port ==
				    mlxsw_sp_port->local_port) {
1120 1121 1122 1123 1124 1125
					/* LAG records can only point to LAG
					 * devices or VLAN devices on top.
					 */
					if (!netif_is_lag_master(orig_dev) &&
					    !is_vlan_dev(orig_dev))
						continue;
1126 1127 1128 1129
					if (vport_fid && vport_fid == fid)
						fdb->vid = 0;
					else if (!vport_fid &&
						 !mlxsw_sp_fid_is_vfid(fid))
1130
						fdb->vid = fid;
1131 1132
					else
						continue;
1133 1134 1135 1136 1137 1138 1139
					ether_addr_copy(fdb->addr, mac);
					fdb->ndm_state = NUD_REACHABLE;
					err = cb(&fdb->obj);
					if (err)
						stored_err = err;
				}
				break;
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155
			}
		}
	} while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);

out:
	kfree(sfd_pl);
	return stored_err ? stored_err : err;
}

static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
				   struct switchdev_obj_port_vlan *vlan,
				   switchdev_obj_dump_cb_t *cb)
{
	u16 vid;
	int err = 0;

1156 1157 1158 1159 1160 1161 1162
	if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
		vlan->flags = 0;
		vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
		vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
		return cb(&vlan->obj);
	}

1163 1164 1165 1166
	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
		vlan->flags = 0;
		if (vid == mlxsw_sp_port->pvid)
			vlan->flags |= BRIDGE_VLAN_INFO_PVID;
E
Elad Raz 已提交
1167 1168
		if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
			vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
		vlan->vid_begin = vid;
		vlan->vid_end = vid;
		err = cb(&vlan->obj);
		if (err)
			break;
	}
	return err;
}

static int mlxsw_sp_port_obj_dump(struct net_device *dev,
				  struct switchdev_obj *obj,
				  switchdev_obj_dump_cb_t *cb)
{
	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
	int err = 0;

1185 1186 1187 1188
	mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
	if (!mlxsw_sp_port)
		return -EINVAL;

1189 1190 1191 1192 1193 1194 1195
	switch (obj->id) {
	case SWITCHDEV_OBJ_ID_PORT_VLAN:
		err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
					      SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
		break;
	case SWITCHDEV_OBJ_ID_PORT_FDB:
		err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1196 1197
					     SWITCHDEV_OBJ_PORT_FDB(obj), cb,
					     obj->orig_dev);
1198 1199 1200 1201 1202 1203 1204 1205 1206
		break;
	default:
		err = -EOPNOTSUPP;
		break;
	}

	return err;
}

1207
static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1208 1209 1210 1211 1212 1213 1214
	.switchdev_port_attr_get	= mlxsw_sp_port_attr_get,
	.switchdev_port_attr_set	= mlxsw_sp_port_attr_set,
	.switchdev_port_obj_add		= mlxsw_sp_port_obj_add,
	.switchdev_port_obj_del		= mlxsw_sp_port_obj_del,
	.switchdev_port_obj_dump	= mlxsw_sp_port_obj_dump,
};

1215 1216
static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
					char *mac, u16 vid,
1217 1218 1219 1220 1221
					struct net_device *dev)
{
	struct switchdev_notifier_fdb_info info;
	unsigned long notifier_type;

1222
	if (learning_sync) {
1223 1224 1225 1226 1227 1228 1229
		info.addr = mac;
		info.vid = vid;
		notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
		call_switchdev_notifiers(notifier_type, dev, &info.info);
	}
}

1230 1231 1232 1233 1234 1235 1236
static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
					    char *sfn_pl, int rec_index,
					    bool adding)
{
	struct mlxsw_sp_port *mlxsw_sp_port;
	char mac[ETH_ALEN];
	u8 local_port;
1237
	u16 vid, fid;
1238
	bool do_notification = true;
1239 1240
	int err;

1241
	mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1242 1243 1244
	mlxsw_sp_port = mlxsw_sp->ports[local_port];
	if (!mlxsw_sp_port) {
		dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1245
		goto just_remove;
1246 1247
	}

1248 1249 1250 1251 1252 1253 1254 1255
	if (mlxsw_sp_fid_is_vfid(fid)) {
		u16 vfid = mlxsw_sp_fid_to_vfid(fid);
		struct mlxsw_sp_port *mlxsw_sp_vport;

		mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
								  vfid);
		if (!mlxsw_sp_vport) {
			netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1256
			goto just_remove;
1257
		}
1258
		vid = 0;
1259 1260 1261 1262 1263 1264
		/* Override the physical port with the vPort. */
		mlxsw_sp_port = mlxsw_sp_vport;
	} else {
		vid = fid;
	}

1265 1266 1267
	adding = adding && mlxsw_sp_port->learning;

do_fdb_op:
1268
	err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1269
				      adding, true);
1270 1271 1272 1273 1274 1275
	if (err) {
		if (net_ratelimit())
			netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
		return;
	}

1276 1277
	if (!do_notification)
		return;
1278
	mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1279
				    adding, mac, vid, mlxsw_sp_port->dev);
1280 1281 1282 1283 1284 1285
	return;

just_remove:
	adding = false;
	do_notification = false;
	goto do_fdb_op;
1286
}
1287

1288 1289 1290 1291 1292
static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
						char *sfn_pl, int rec_index,
						bool adding)
{
	struct mlxsw_sp_port *mlxsw_sp_port;
1293
	struct net_device *dev;
1294
	char mac[ETH_ALEN];
1295
	u16 lag_vid = 0;
1296
	u16 lag_id;
1297
	u16 vid, fid;
1298
	bool do_notification = true;
1299 1300
	int err;

1301
	mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1302 1303 1304
	mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
	if (!mlxsw_sp_port) {
		dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1305
		goto just_remove;
1306
	}
1307

1308 1309 1310 1311 1312 1313 1314 1315
	if (mlxsw_sp_fid_is_vfid(fid)) {
		u16 vfid = mlxsw_sp_fid_to_vfid(fid);
		struct mlxsw_sp_port *mlxsw_sp_vport;

		mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
								  vfid);
		if (!mlxsw_sp_vport) {
			netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1316
			goto just_remove;
1317 1318
		}

1319
		lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1320
		dev = mlxsw_sp_vport->dev;
1321
		vid = 0;
1322 1323 1324
		/* Override the physical port with the vPort. */
		mlxsw_sp_port = mlxsw_sp_vport;
	} else {
1325
		dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1326 1327 1328
		vid = fid;
	}

1329 1330 1331
	adding = adding && mlxsw_sp_port->learning;

do_fdb_op:
1332
	err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1333
					  adding, true);
1334 1335 1336 1337 1338 1339
	if (err) {
		if (net_ratelimit())
			netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
		return;
	}

1340 1341
	if (!do_notification)
		return;
1342
	mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1343
				    vid, dev);
1344 1345 1346 1347 1348 1349
	return;

just_remove:
	adding = false;
	do_notification = false;
	goto do_fdb_op;
1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363
}

static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
					    char *sfn_pl, int rec_index)
{
	switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
	case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
		mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
						rec_index, true);
		break;
	case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
		mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
						rec_index, false);
		break;
1364 1365 1366 1367 1368 1369 1370 1371
	case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
		mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
						    rec_index, true);
		break;
	case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
		mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
						    rec_index, false);
		break;
1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394
	}
}

static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
{
	schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
			      msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
}

static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
{
	struct mlxsw_sp *mlxsw_sp;
	char *sfn_pl;
	u8 num_rec;
	int i;
	int err;

	sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
	if (!sfn_pl)
		return;

	mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);

1395
	rtnl_lock();
1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407
	do {
		mlxsw_reg_sfn_pack(sfn_pl);
		err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
		if (err) {
			dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
			break;
		}
		num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
		for (i = 0; i < num_rec; i++)
			mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);

	} while (num_rec);
1408
	rtnl_unlock();
1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461

	kfree(sfn_pl);
	mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
}

static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
{
	int err;

	err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
	if (err) {
		dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
		return err;
	}
	INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
	mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
	mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
	return 0;
}

static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
{
	cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
}

static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
{
	u16 fid;

	for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
		mlxsw_sp_fid_destroy(mlxsw_sp, fid);
}

int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
{
	return mlxsw_sp_fdb_init(mlxsw_sp);
}

void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
{
	mlxsw_sp_fdb_fini(mlxsw_sp);
	mlxsw_sp_fids_fini(mlxsw_sp);
}

int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	struct net_device *dev = mlxsw_sp_port->dev;
	int err;

	/* Allow only untagged packets to ingress and tag them internally
	 * with VID 1.
	 */
	mlxsw_sp_port->pvid = 1;
E
Elad Raz 已提交
1462 1463
	err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
					true);
1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486
	if (err) {
		netdev_err(dev, "Unable to init VLANs\n");
		return err;
	}

	/* Add implicit VLAN interface in the device, so that untagged
	 * packets will be classified to the default vFID.
	 */
	err = mlxsw_sp_port_add_vid(dev, 0, 1);
	if (err)
		netdev_err(dev, "Failed to configure default vFID\n");

	return err;
}

void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
	mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
}

void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
}