/*
   * 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>
  #include <linux/rtnetlink.h>
  #include <net/switchdev.h>
  
  #include "spectrum.h"
  #include "core.h"
  #include "reg.h"
  
  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;
  
  	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) |
  			(mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
  			(mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
  		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_DISABLED: /* fall-through */
  	case BR_STATE_FORWARDING:
  		spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
  		break;
  	case BR_STATE_LISTENING: /* fall-through */
  	case BR_STATE_LEARNING:
  		spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
  		break;
  	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);
  	for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
  		mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
  
  	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);
  }
  
  static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
  				     u16 fid_begin, u16 fid_end, bool set,
  				     bool only_uc)
  {
  	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  	u16 range = fid_end - fid_begin + 1;
  	char *sftr_pl;
  	int err;
  
  	sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
  	if (!sftr_pl)
  		return -ENOMEM;
  
  	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, fid_begin,
  			    MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
  			    mlxsw_sp_port->local_port, set);
  	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;
  
  	mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, fid_begin,
  			    MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
  			    mlxsw_sp_port->local_port, set);
  	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;
  
  	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
  ");
  	return err;
  }
  
  static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
  					   struct switchdev_trans *trans,
  					   unsigned long brport_flags)
  {
  	unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
  	bool set;
  	int err;
  
  	if (switchdev_trans_ph_prepare(trans))
  		return 0;
  
  	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;
  	mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
  	mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
  
  	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,
  					    unsigned long ageing_clock_t)
  {
  	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
  	u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
  
  	if (switchdev_trans_ph_prepare(trans)) {
  		if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
  		    ageing_time > MLXSW_SP_MAX_AGEING_TIME)
  			return -ERANGE;
  		else
  			return 0;
  	}
  
  	return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
  }
  
  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;
  
  	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;
  	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;
  
  	if (mlxsw_sp_port->nr_vfids)
  		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;
  
  	if (!mlxsw_sp_port->nr_vfids)
  		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;
  }
  
  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;
  	enum mlxsw_reg_svfa_mt mt;
  	u16 vid, vid_e;
  	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
  ",
  					   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
  ",
  					   vid);
  				return err;
  			}
  		}
  
  		/* Set FID mapping according to port's mode */
  		err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
  		if (err) {
  			netdev_err(dev, "Failed to map FID=%d", vid);
  			return err;
  		}
  	}
  
  	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
  					true, false);
  	if (err) {
  		netdev_err(dev, "Failed to configure flooding
  ");
  		return 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, true,
  					     flag_untagged);
  		if (err) {
  			netdev_err(mlxsw_sp_port->dev, "Unable to add VIDs %d-%d
  ",
  				   vid, vid_e);
  			return err;
  		}
  	}
  
  	vid = vid_begin;
  	if (flag_pvid && mlxsw_sp_port->pvid != vid) {
  		err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
  		if (err) {
  			netdev_err(mlxsw_sp_port->dev, "Unable to add PVID %d
  ",
  				   vid);
  			return err;
  		}
  		mlxsw_sp_port->pvid = vid;
  	}
  
  	/* Changing activity bits only if HW operation succeded */
  	for (vid = vid_begin; vid <= vid_end; vid++)
  		set_bit(vid, mlxsw_sp_port->active_vlans);
  
  	return mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
  					   mlxsw_sp_port->stp_state);
  }
  
  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)
  {
  	bool untagged_flag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
  	bool pvid_flag = vlan->flags & BRIDGE_VLAN_INFO_PVID;
  
  	if (switchdev_trans_ph_prepare(trans))
  		return 0;
  
  	return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
  					 vlan->vid_begin, vlan->vid_end,
  					 untagged_flag, pvid_flag);
  }
  
  static int mlxsw_sp_port_fdb_op(struct mlxsw_sp_port *mlxsw_sp_port,
  				const char *mac, u16 vid, bool adding,
  				bool dynamic)
  {
  	enum mlxsw_reg_sfd_rec_policy policy;
  	enum mlxsw_reg_sfd_op op;
  	char *sfd_pl;
  	int err;
  
  	if (!vid)
  		vid = mlxsw_sp_port->pvid;
  
  	sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
  	if (!sfd_pl)
  		return -ENOMEM;
  
  	policy = dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
  			   MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
  	op = adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
  		      MLXSW_REG_SFD_OP_WRITE_REMOVE;
  	mlxsw_reg_sfd_pack(sfd_pl, op, 0);
  	mlxsw_reg_sfd_uc_pack(sfd_pl, 0, policy,
  			      mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
  			      mlxsw_sp_port->local_port);
  	err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sfd),
  			      sfd_pl);
  	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)
  {
  	if (switchdev_trans_ph_prepare(trans))
  		return 0;
  
  	return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
  				    true, false);
  }
  
  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;
  
  	switch (obj->id) {
  	case SWITCHDEV_OBJ_ID_PORT_VLAN:
  		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;
  	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;
  	u16 vid, vid_e;
  	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);
  
  	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, false,
  					     false);
  		if (err) {
  			netdev_err(mlxsw_sp_port->dev, "Unable to del VIDs %d-%d
  ",
  				   vid, vid_e);
  			return err;
  		}
  	}
  
  	if ((mlxsw_sp_port->pvid >= vid_begin) &&
  	    (mlxsw_sp_port->pvid <= vid_end)) {
  		/* Default VLAN is always 1 */
  		mlxsw_sp_port->pvid = 1;
  		err = mlxsw_sp_port_pvid_set(mlxsw_sp_port,
  					     mlxsw_sp_port->pvid);
  		if (err) {
  			netdev_err(mlxsw_sp_port->dev, "Unable to del PVID %d
  ",
  				   vid);
  			return err;
  		}
  	}
  
  	if (init)
  		goto out;
  
  	err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
  					false, false);
  	if (err) {
  		netdev_err(dev, "Failed to clear flooding
  ");
  		return err;
  	}
  
  	for (vid = vid_begin; vid <= vid_end; vid++) {
  		/* 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);
  }
  
  static int
  mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
  			     const struct switchdev_obj_port_fdb *fdb)
  {
  	return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
  				    false, false);
  }
  
  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;
  
  	switch (obj->id) {
  	case SWITCHDEV_OBJ_ID_PORT_VLAN:
  		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;
  	default:
  		err = -EOPNOTSUPP;
  		break;
  	}
  
  	return err;
  }
  
  static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
  				  struct switchdev_obj_port_fdb *fdb,
  				  switchdev_obj_dump_cb_t *cb)
  {
  	char *sfd_pl;
  	char mac[ETH_ALEN];
  	u16 vid;
  	u8 local_port;
  	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;
  
  	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);
  		err = mlxsw_reg_query(mlxsw_sp_port->mlxsw_sp->core,
  				      MLXSW_REG(sfd), sfd_pl);
  		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:
  				mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &vid,
  							&local_port);
  				if (local_port == mlxsw_sp_port->local_port) {
  					ether_addr_copy(fdb->addr, mac);
  					fdb->ndm_state = NUD_REACHABLE;
  					fdb->vid = vid;
  					err = cb(&fdb->obj);
  					if (err)
  						stored_err = err;
  				}
  			}
  		}
  	} 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;
  
  	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;
  		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;
  
  	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,
  					     SWITCHDEV_OBJ_PORT_FDB(obj), cb);
  		break;
  	default:
  		err = -EOPNOTSUPP;
  		break;
  	}
  
  	return err;
  }
  
  static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
  	.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,
  };
  
  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;
  	u16 vid;
  	int err;
  
  	mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &vid, &local_port);
  	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
  ");
  		return;
  	}
  
  	err = mlxsw_sp_port_fdb_op(mlxsw_sp_port, mac, vid,
  				   adding && mlxsw_sp_port->learning, true);
  	if (err) {
  		if (net_ratelimit())
  			netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry
  ");
  		return;
  	}
  
  	if (mlxsw_sp_port->learning && mlxsw_sp_port->learning_sync) {
  		struct switchdev_notifier_fdb_info info;
  		unsigned long notifier_type;
  
  		info.addr = mac;
  		info.vid = vid;
  		notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
  		call_switchdev_notifiers(notifier_type, mlxsw_sp_port->dev,
  					 &info.info);
  	}
  }
  
  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;
  	}
  }
  
  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);
  
  	rtnl_lock();
  	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
  ");
  			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);
  	rtnl_unlock();
  
  	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
  ");
  		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;
  	err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
  	if (err) {
  		netdev_err(dev, "Unable to init VLANs
  ");
  		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
  ");
  
  	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)
  {
  }