drivers/net/ethernet/mellanox/mlxsw/spectrum.c

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/spectrum.c
   3  * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
   5  * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
   6  * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the names of the copyright holders nor the names of its
  17  *    contributors may be used to endorse or promote products derived from
  18  *    this software without specific prior written permission.
  19  *
  20  * Alternatively, this software may be distributed under the terms of the
  21  * GNU General Public License ("GPL") version 2 as published by the Free
  22  * Software Foundation.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #include <linux/kernel.h>
  38 #include <linux/module.h>
  39 #include <linux/types.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/ethtool.h>
  43 #include <linux/slab.h>
  44 #include <linux/device.h>
  45 #include <linux/skbuff.h>
  46 #include <linux/if_vlan.h>
  47 #include <linux/if_bridge.h>
  48 #include <linux/workqueue.h>
  49 #include <linux/jiffies.h>
  50 #include <linux/bitops.h>
  51 #include <linux/list.h>
  52 #include <net/devlink.h>
  53 #include <net/switchdev.h>
  54 #include <generated/utsrelease.h>
  55
  56 #include "spectrum.h"
  57 #include "core.h"
  58 #include "reg.h"
  59 #include "port.h"
  60 #include "trap.h"
  61 #include "txheader.h"
  62
  63 static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
  64 static const char mlxsw_sp_driver_version[] = "1.0";
  65
  66 /* tx_hdr_version
  67  * Tx header version.
  68  * Must be set to 1.
  69  */
  70 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
  71
  72 /* tx_hdr_ctl
  73  * Packet control type.
  74  * 0 - Ethernet control (e.g. EMADs, LACP)
  75  * 1 - Ethernet data
  76  */
  77 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
  78
  79 /* tx_hdr_proto
  80  * Packet protocol type. Must be set to 1 (Ethernet).
  81  */
  82 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
  83
  84 /* tx_hdr_rx_is_router
  85  * Packet is sent from the router. Valid for data packets only.
  86  */
  87 MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
  88
  89 /* tx_hdr_fid_valid
  90  * Indicates if the 'fid' field is valid and should be used for
  91  * forwarding lookup. Valid for data packets only.
  92  */
  93 MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
  94
  95 /* tx_hdr_swid
  96  * Switch partition ID. Must be set to 0.
  97  */
  98 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
  99
 100 /* tx_hdr_control_tclass
 101  * Indicates if the packet should use the control TClass and not one
 102  * of the data TClasses.
 103  */
 104 MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
 105
 106 /* tx_hdr_etclass
 107  * Egress TClass to be used on the egress device on the egress port.
 108  */
 109 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
 110
 111 /* tx_hdr_port_mid
 112  * Destination local port for unicast packets.
 113  * Destination multicast ID for multicast packets.
 114  *
 115  * Control packets are directed to a specific egress port, while data
 116  * packets are transmitted through the CPU port (0) into the switch partition,
 117  * where forwarding rules are applied.
 118  */
 119 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
 120
 121 /* tx_hdr_fid
 122  * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
 123  * set, otherwise calculated based on the packet's VID using VID to FID mapping.
 124  * Valid for data packets only.
 125  */
 126 MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
 127
 128 /* tx_hdr_type
 129  * 0 - Data packets
 130  * 6 - Control packets
 131  */
 132 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
 133
 134 static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
 135                                      const struct mlxsw_tx_info *tx_info)
 136 {
 137         char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
 138
 139         memset(txhdr, 0, MLXSW_TXHDR_LEN);
 140
 141         mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
 142         mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
 143         mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
 144         mlxsw_tx_hdr_swid_set(txhdr, 0);
 145         mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
 146         mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
 147         mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
 148 }
 149
 150 static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
 151 {
 152         char spad_pl[MLXSW_REG_SPAD_LEN];
 153         int err;
 154
 155         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
 156         if (err)
 157                 return err;
 158         mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
 159         return 0;
 160 }
 161
 162 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
 163                                           bool is_up)
 164 {
 165         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 166         char paos_pl[MLXSW_REG_PAOS_LEN];
 167
 168         mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
 169                             is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
 170                             MLXSW_PORT_ADMIN_STATUS_DOWN);
 171         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
 172 }
 173
 174 static int mlxsw_sp_port_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
 175                                          bool *p_is_up)
 176 {
 177         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 178         char paos_pl[MLXSW_REG_PAOS_LEN];
 179         u8 oper_status;
 180         int err;
 181
 182         mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
 183         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
 184         if (err)
 185                 return err;
 186         oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
 187         *p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
 188         return 0;
 189 }
 190
 191 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
 192                                       unsigned char *addr)
 193 {
 194         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 195         char ppad_pl[MLXSW_REG_PPAD_LEN];
 196
 197         mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
 198         mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
 199         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
 200 }
 201
 202 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
 203 {
 204         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 205         unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
 206
 207         ether_addr_copy(addr, mlxsw_sp->base_mac);
 208         addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
 209         return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
 210 }
 211
 212 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 213                                        u16 vid, enum mlxsw_reg_spms_state state)
 214 {
 215         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 216         char *spms_pl;
 217         int err;
 218
 219         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 220         if (!spms_pl)
 221                 return -ENOMEM;
 222         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 223         mlxsw_reg_spms_vid_pack(spms_pl, vid, state);
 224         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 225         kfree(spms_pl);
 226         return err;
 227 }
 228
 229 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
 230 {
 231         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 232         char pmtu_pl[MLXSW_REG_PMTU_LEN];
 233         int max_mtu;
 234         int err;
 235
 236         mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
 237         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
 238         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 239         if (err)
 240                 return err;
 241         max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
 242
 243         if (mtu > max_mtu)
 244                 return -EINVAL;
 245
 246         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
 247         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 248 }
 249
 250 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
 251 {
 252         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 253         char pspa_pl[MLXSW_REG_PSPA_LEN];
 254
 255         mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
 256         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
 257 }
 258
 259 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
 260                                      bool enable)
 261 {
 262         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 263         char svpe_pl[MLXSW_REG_SVPE_LEN];
 264
 265         mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
 266         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
 267 }
 268
 269 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 270                                  enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
 271                                  u16 vid)
 272 {
 273         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 274         char svfa_pl[MLXSW_REG_SVFA_LEN];
 275
 276         mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
 277                             fid, vid);
 278         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 279 }
 280
 281 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 282                                           u16 vid, bool learn_enable)
 283 {
 284         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 285         char *spvmlr_pl;
 286         int err;
 287
 288         spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
 289         if (!spvmlr_pl)
 290                 return -ENOMEM;
 291         mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
 292                               learn_enable);
 293         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
 294         kfree(spvmlr_pl);
 295         return err;
 296 }
 297
 298 static int
 299 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
 300 {
 301         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 302         char sspr_pl[MLXSW_REG_SSPR_LEN];
 303
 304         mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
 305         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
 306 }
 307
 308 static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
 309                                          u8 local_port, u8 *p_module,
 310                                          u8 *p_width)
 311 {
 312         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 313         int err;
 314
 315         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 316         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 317         if (err)
 318                 return err;
 319         *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
 320         *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
 321         return 0;
 322 }
 323
 324 static int mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 325                                     u8 module, u8 width, u8 lane)
 326 {
 327         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 328         int i;
 329
 330         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 331         mlxsw_reg_pmlp_width_set(pmlp_pl, width);
 332         for (i = 0; i < width; i++) {
 333                 mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
 334                 mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i);  /* Rx & Tx */
 335         }
 336
 337         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 338 }
 339
 340 static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 341 {
 342         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 343
 344         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 345         mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
 346         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 347 }
 348
 349 static int mlxsw_sp_port_open(struct net_device *dev)
 350 {
 351         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 352         int err;
 353
 354         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
 355         if (err)
 356                 return err;
 357         netif_start_queue(dev);
 358         return 0;
 359 }
 360
 361 static int mlxsw_sp_port_stop(struct net_device *dev)
 362 {
 363         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 364
 365         netif_stop_queue(dev);
 366         return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
 367 }
 368
 369 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
 370                                       struct net_device *dev)
 371 {
 372         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 373         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 374         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
 375         const struct mlxsw_tx_info tx_info = {
 376                 .local_port = mlxsw_sp_port->local_port,
 377                 .is_emad = false,
 378         };
 379         u64 len;
 380         int err;
 381
 382         if (mlxsw_core_skb_transmit_busy(mlxsw_sp, &tx_info))
 383                 return NETDEV_TX_BUSY;
 384
 385         if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
 386                 struct sk_buff *skb_orig = skb;
 387
 388                 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
 389                 if (!skb) {
 390                         this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 391                         dev_kfree_skb_any(skb_orig);
 392                         return NETDEV_TX_OK;
 393                 }
 394         }
 395
 396         if (eth_skb_pad(skb)) {
 397                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 398                 return NETDEV_TX_OK;
 399         }
 400
 401         mlxsw_sp_txhdr_construct(skb, &tx_info);
 402         len = skb->len;
 403         /* Due to a race we might fail here because of a full queue. In that
 404          * unlikely case we simply drop the packet.
 405          */
 406         err = mlxsw_core_skb_transmit(mlxsw_sp, skb, &tx_info);
 407
 408         if (!err) {
 409                 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
 410                 u64_stats_update_begin(&pcpu_stats->syncp);
 411                 pcpu_stats->tx_packets++;
 412                 pcpu_stats->tx_bytes += len;
 413                 u64_stats_update_end(&pcpu_stats->syncp);
 414         } else {
 415                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 416                 dev_kfree_skb_any(skb);
 417         }
 418         return NETDEV_TX_OK;
 419 }
 420
 421 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
 422 {
 423 }
 424
 425 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
 426 {
 427         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 428         struct sockaddr *addr = p;
 429         int err;
 430
 431         if (!is_valid_ether_addr(addr->sa_data))
 432                 return -EADDRNOTAVAIL;
 433
 434         err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
 435         if (err)
 436                 return err;
 437         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 438         return 0;
 439 }
 440
 441 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
 442 {
 443         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 444         int err;
 445
 446         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
 447         if (err)
 448                 return err;
 449         dev->mtu = mtu;
 450         return 0;
 451 }
 452
 453 static struct rtnl_link_stats64 *
 454 mlxsw_sp_port_get_stats64(struct net_device *dev,
 455                           struct rtnl_link_stats64 *stats)
 456 {
 457         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 458         struct mlxsw_sp_port_pcpu_stats *p;
 459         u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
 460         u32 tx_dropped = 0;
 461         unsigned int start;
 462         int i;
 463
 464         for_each_possible_cpu(i) {
 465                 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&p->syncp);
 468                         rx_packets      = p->rx_packets;
 469                         rx_bytes        = p->rx_bytes;
 470                         tx_packets      = p->tx_packets;
 471                         tx_bytes        = p->tx_bytes;
 472                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 473
 474                 stats->rx_packets       += rx_packets;
 475                 stats->rx_bytes         += rx_bytes;
 476                 stats->tx_packets       += tx_packets;
 477                 stats->tx_bytes         += tx_bytes;
 478                 /* tx_dropped is u32, updated without syncp protection. */
 479                 tx_dropped      += p->tx_dropped;
 480         }
 481         stats->tx_dropped       = tx_dropped;
 482         return stats;
 483 }
 484
 485 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
 486                            u16 vid_end, bool is_member, bool untagged)
 487 {
 488         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 489         char *spvm_pl;
 490         int err;
 491
 492         spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
 493         if (!spvm_pl)
 494                 return -ENOMEM;
 495
 496         mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
 497                             vid_end, is_member, untagged);
 498         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
 499         kfree(spvm_pl);
 500         return err;
 501 }
 502
 503 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 504 {
 505         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 506         u16 vid, last_visited_vid;
 507         int err;
 508
 509         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 510                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
 511                                                    vid);
 512                 if (err) {
 513                         last_visited_vid = vid;
 514                         goto err_port_vid_to_fid_set;
 515                 }
 516         }
 517
 518         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
 519         if (err) {
 520                 last_visited_vid = VLAN_N_VID;
 521                 goto err_port_vid_to_fid_set;
 522         }
 523
 524         return 0;
 525
 526 err_port_vid_to_fid_set:
 527         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 528                 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
 529                                              vid);
 530         return err;
 531 }
 532
 533 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 534 {
 535         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 536         u16 vid;
 537         int err;
 538
 539         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
 540         if (err)
 541                 return err;
 542
 543         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 544                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
 545                                                    vid, vid);
 546                 if (err)
 547                         return err;
 548         }
 549
 550         return 0;
 551 }
 552
 553 static struct mlxsw_sp_vfid *
 554 mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
 555 {
 556         struct mlxsw_sp_vfid *vfid;
 557
 558         list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
 559                 if (vfid->vid == vid)
 560                         return vfid;
 561         }
 562
 563         return NULL;
 564 }
 565
 566 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
 567 {
 568         return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
 569                                    MLXSW_SP_VFID_PORT_MAX);
 570 }
 571
 572 static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
 573 {
 574         u16 fid = mlxsw_sp_vfid_to_fid(vfid);
 575         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 576
 577         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
 578         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 579 }
 580
 581 static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
 582 {
 583         u16 fid = mlxsw_sp_vfid_to_fid(vfid);
 584         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 585
 586         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
 587         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 588 }
 589
 590 static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
 591                                                   u16 vid)
 592 {
 593         struct device *dev = mlxsw_sp->bus_info->dev;
 594         struct mlxsw_sp_vfid *vfid;
 595         u16 n_vfid;
 596         int err;
 597
 598         n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
 599         if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
 600                 dev_err(dev, "No available vFIDs\n");
 601                 return ERR_PTR(-ERANGE);
 602         }
 603
 604         err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
 605         if (err) {
 606                 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
 607                 return ERR_PTR(err);
 608         }
 609
 610         vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
 611         if (!vfid)
 612                 goto err_allocate_vfid;
 613
 614         vfid->vfid = n_vfid;
 615         vfid->vid = vid;
 616
 617         list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
 618         set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
 619
 620         return vfid;
 621
 622 err_allocate_vfid:
 623         __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
 624         return ERR_PTR(-ENOMEM);
 625 }
 626
 627 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 628                                   struct mlxsw_sp_vfid *vfid)
 629 {
 630         clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
 631         list_del(&vfid->list);
 632
 633         __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
 634
 635         kfree(vfid);
 636 }
 637
 638 static struct mlxsw_sp_port *
 639 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
 640                            struct mlxsw_sp_vfid *vfid)
 641 {
 642         struct mlxsw_sp_port *mlxsw_sp_vport;
 643
 644         mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
 645         if (!mlxsw_sp_vport)
 646                 return NULL;
 647
 648         /* dev will be set correctly after the VLAN device is linked
 649          * with the real device. In case of bridge SELF invocation, dev
 650          * will remain as is.
 651          */
 652         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
 653         mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 654         mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
 655         mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
 656         mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
 657         mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
 658         mlxsw_sp_vport->vport.vfid = vfid;
 659         mlxsw_sp_vport->vport.vid = vfid->vid;
 660
 661         list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
 662
 663         return mlxsw_sp_vport;
 664 }
 665
 666 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
 667 {
 668         list_del(&mlxsw_sp_vport->vport.list);
 669         kfree(mlxsw_sp_vport);
 670 }
 671
 672 int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 673                           u16 vid)
 674 {
 675         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 676         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 677         struct mlxsw_sp_port *mlxsw_sp_vport;
 678         struct mlxsw_sp_vfid *vfid;
 679         int err;
 680
 681         /* VLAN 0 is added to HW filter when device goes up, but it is
 682          * reserved in our case, so simply return.
 683          */
 684         if (!vid)
 685                 return 0;
 686
 687         if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
 688                 netdev_warn(dev, "VID=%d already configured\n", vid);
 689                 return 0;
 690         }
 691
 692         vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
 693         if (!vfid) {
 694                 vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
 695                 if (IS_ERR(vfid)) {
 696                         netdev_err(dev, "Failed to create vFID for VID=%d\n",
 697                                    vid);
 698                         return PTR_ERR(vfid);
 699                 }
 700         }
 701
 702         mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
 703         if (!mlxsw_sp_vport) {
 704                 netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
 705                 err = -ENOMEM;
 706                 goto err_port_vport_create;
 707         }
 708
 709         if (!vfid->nr_vports) {
 710                 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
 711                                                true, false);
 712                 if (err) {
 713                         netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
 714                                    vfid->vfid);
 715                         goto err_vport_flood_set;
 716                 }
 717         }
 718
 719         /* When adding the first VLAN interface on a bridged port we need to
 720          * transition all the active 802.1Q bridge VLANs to use explicit
 721          * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
 722          */
 723         if (list_is_singular(&mlxsw_sp_port->vports_list)) {
 724                 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
 725                 if (err) {
 726                         netdev_err(dev, "Failed to set to Virtual mode\n");
 727                         goto err_port_vp_mode_trans;
 728                 }
 729         }
 730
 731         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
 732                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
 733                                            true,
 734                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
 735                                            vid);
 736         if (err) {
 737                 netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
 738                            vid, vfid->vfid);
 739                 goto err_port_vid_to_fid_set;
 740         }
 741
 742         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
 743         if (err) {
 744                 netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
 745                 goto err_port_vid_learning_set;
 746         }
 747
 748         err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
 749         if (err) {
 750                 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
 751                            vid);
 752                 goto err_port_add_vid;
 753         }
 754
 755         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 756                                           MLXSW_REG_SPMS_STATE_FORWARDING);
 757         if (err) {
 758                 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
 759                 goto err_port_stp_state_set;
 760         }
 761
 762         vfid->nr_vports++;
 763
 764         return 0;
 765
 766 err_port_stp_state_set:
 767         mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
 768 err_port_add_vid:
 769         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 770 err_port_vid_learning_set:
 771         mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
 772                                      MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
 773                                      mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
 774 err_port_vid_to_fid_set:
 775         if (list_is_singular(&mlxsw_sp_port->vports_list))
 776                 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 777 err_port_vp_mode_trans:
 778         if (!vfid->nr_vports)
 779                 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
 780                                          false);
 781 err_vport_flood_set:
 782         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 783 err_port_vport_create:
 784         if (!vfid->nr_vports)
 785                 mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
 786         return err;
 787 }
 788
 789 int mlxsw_sp_port_kill_vid(struct net_device *dev,
 790                            __be16 __always_unused proto, u16 vid)
 791 {
 792         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 793         struct mlxsw_sp_port *mlxsw_sp_vport;
 794         struct mlxsw_sp_vfid *vfid;
 795         int err;
 796
 797         /* VLAN 0 is removed from HW filter when device goes down, but
 798          * it is reserved in our case, so simply return.
 799          */
 800         if (!vid)
 801                 return 0;
 802
 803         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
 804         if (!mlxsw_sp_vport) {
 805                 netdev_warn(dev, "VID=%d does not exist\n", vid);
 806                 return 0;
 807         }
 808
 809         vfid = mlxsw_sp_vport->vport.vfid;
 810
 811         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 812                                           MLXSW_REG_SPMS_STATE_DISCARDING);
 813         if (err) {
 814                 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
 815                 return err;
 816         }
 817
 818         err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
 819         if (err) {
 820                 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
 821                            vid);
 822                 return err;
 823         }
 824
 825         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 826         if (err) {
 827                 netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
 828                 return err;
 829         }
 830
 831         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
 832                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
 833                                            false,
 834                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
 835                                            vid);
 836         if (err) {
 837                 netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
 838                            vid, vfid->vfid);
 839                 return err;
 840         }
 841
 842         /* When removing the last VLAN interface on a bridged port we need to
 843          * transition all active 802.1Q bridge VLANs to use VID to FID
 844          * mappings and set port's mode to VLAN mode.
 845          */
 846         if (list_is_singular(&mlxsw_sp_port->vports_list)) {
 847                 err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 848                 if (err) {
 849                         netdev_err(dev, "Failed to set to VLAN mode\n");
 850                         return err;
 851                 }
 852         }
 853
 854         vfid->nr_vports--;
 855         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 856
 857         /* Destroy the vFID if no vPorts are assigned to it anymore. */
 858         if (!vfid->nr_vports)
 859                 mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
 860
 861         return 0;
 862 }
 863
 864 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
 865         .ndo_open               = mlxsw_sp_port_open,
 866         .ndo_stop               = mlxsw_sp_port_stop,
 867         .ndo_start_xmit         = mlxsw_sp_port_xmit,
 868         .ndo_set_rx_mode        = mlxsw_sp_set_rx_mode,
 869         .ndo_set_mac_address    = mlxsw_sp_port_set_mac_address,
 870         .ndo_change_mtu         = mlxsw_sp_port_change_mtu,
 871         .ndo_get_stats64        = mlxsw_sp_port_get_stats64,
 872         .ndo_vlan_rx_add_vid    = mlxsw_sp_port_add_vid,
 873         .ndo_vlan_rx_kill_vid   = mlxsw_sp_port_kill_vid,
 874         .ndo_fdb_add            = switchdev_port_fdb_add,
 875         .ndo_fdb_del            = switchdev_port_fdb_del,
 876         .ndo_fdb_dump           = switchdev_port_fdb_dump,
 877         .ndo_bridge_setlink     = switchdev_port_bridge_setlink,
 878         .ndo_bridge_getlink     = switchdev_port_bridge_getlink,
 879         .ndo_bridge_dellink     = switchdev_port_bridge_dellink,
 880 };
 881
 882 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
 883                                       struct ethtool_drvinfo *drvinfo)
 884 {
 885         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 886         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 887
 888         strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
 889         strlcpy(drvinfo->version, mlxsw_sp_driver_version,
 890                 sizeof(drvinfo->version));
 891         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 892                  "%d.%d.%d",
 893                  mlxsw_sp->bus_info->fw_rev.major,
 894                  mlxsw_sp->bus_info->fw_rev.minor,
 895                  mlxsw_sp->bus_info->fw_rev.subminor);
 896         strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
 897                 sizeof(drvinfo->bus_info));
 898 }
 899
 900 struct mlxsw_sp_port_hw_stats {
 901         char str[ETH_GSTRING_LEN];
 902         u64 (*getter)(char *payload);
 903 };
 904
 905 static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
 906         {
 907                 .str = "a_frames_transmitted_ok",
 908                 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
 909         },
 910         {
 911                 .str = "a_frames_received_ok",
 912                 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
 913         },
 914         {
 915                 .str = "a_frame_check_sequence_errors",
 916                 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
 917         },
 918         {
 919                 .str = "a_alignment_errors",
 920                 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
 921         },
 922         {
 923                 .str = "a_octets_transmitted_ok",
 924                 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
 925         },
 926         {
 927                 .str = "a_octets_received_ok",
 928                 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
 929         },
 930         {
 931                 .str = "a_multicast_frames_xmitted_ok",
 932                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
 933         },
 934         {
 935                 .str = "a_broadcast_frames_xmitted_ok",
 936                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
 937         },
 938         {
 939                 .str = "a_multicast_frames_received_ok",
 940                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
 941         },
 942         {
 943                 .str = "a_broadcast_frames_received_ok",
 944                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
 945         },
 946         {
 947                 .str = "a_in_range_length_errors",
 948                 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
 949         },
 950         {
 951                 .str = "a_out_of_range_length_field",
 952                 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
 953         },
 954         {
 955                 .str = "a_frame_too_long_errors",
 956                 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
 957         },
 958         {
 959                 .str = "a_symbol_error_during_carrier",
 960                 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
 961         },
 962         {
 963                 .str = "a_mac_control_frames_transmitted",
 964                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
 965         },
 966         {
 967                 .str = "a_mac_control_frames_received",
 968                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
 969         },
 970         {
 971                 .str = "a_unsupported_opcodes_received",
 972                 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
 973         },
 974         {
 975                 .str = "a_pause_mac_ctrl_frames_received",
 976                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
 977         },
 978         {
 979                 .str = "a_pause_mac_ctrl_frames_xmitted",
 980                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
 981         },
 982 };
 983
 984 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
 985
 986 static void mlxsw_sp_port_get_strings(struct net_device *dev,
 987                                       u32 stringset, u8 *data)
 988 {
 989         u8 *p = data;
 990         int i;
 991
 992         switch (stringset) {
 993         case ETH_SS_STATS:
 994                 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
 995                         memcpy(p, mlxsw_sp_port_hw_stats[i].str,
 996                                ETH_GSTRING_LEN);
 997                         p += ETH_GSTRING_LEN;
 998                 }
 999                 break;
1000         }
1001 }
1002
1003 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
1004                                      enum ethtool_phys_id_state state)
1005 {
1006         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1007         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1008         char mlcr_pl[MLXSW_REG_MLCR_LEN];
1009         bool active;
1010
1011         switch (state) {
1012         case ETHTOOL_ID_ACTIVE:
1013                 active = true;
1014                 break;
1015         case ETHTOOL_ID_INACTIVE:
1016                 active = false;
1017                 break;
1018         default:
1019                 return -EOPNOTSUPP;
1020         }
1021
1022         mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
1023         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
1024 }
1025
1026 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1027                                     struct ethtool_stats *stats, u64 *data)
1028 {
1029         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1030         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1031         char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1032         int i;
1033         int err;
1034
1035         mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port);
1036         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1037         for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
1038                 data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
1039 }
1040
1041 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1042 {
1043         switch (sset) {
1044         case ETH_SS_STATS:
1045                 return MLXSW_SP_PORT_HW_STATS_LEN;
1046         default:
1047                 return -EOPNOTSUPP;
1048         }
1049 }
1050
1051 struct mlxsw_sp_port_link_mode {
1052         u32 mask;
1053         u32 supported;
1054         u32 advertised;
1055         u32 speed;
1056 };
1057
1058 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1059         {
1060                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1061                 .supported      = SUPPORTED_100baseT_Full,
1062                 .advertised     = ADVERTISED_100baseT_Full,
1063                 .speed          = 100,
1064         },
1065         {
1066                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1067                 .speed          = 100,
1068         },
1069         {
1070                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1071                                   MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1072                 .supported      = SUPPORTED_1000baseKX_Full,
1073                 .advertised     = ADVERTISED_1000baseKX_Full,
1074                 .speed          = 1000,
1075         },
1076         {
1077                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1078                 .supported      = SUPPORTED_10000baseT_Full,
1079                 .advertised     = ADVERTISED_10000baseT_Full,
1080                 .speed          = 10000,
1081         },
1082         {
1083                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1084                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1085                 .supported      = SUPPORTED_10000baseKX4_Full,
1086                 .advertised     = ADVERTISED_10000baseKX4_Full,
1087                 .speed          = 10000,
1088         },
1089         {
1090                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1091                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1092                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1093                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1094                 .supported      = SUPPORTED_10000baseKR_Full,
1095                 .advertised     = ADVERTISED_10000baseKR_Full,
1096                 .speed          = 10000,
1097         },
1098         {
1099                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1100                 .supported      = SUPPORTED_20000baseKR2_Full,
1101                 .advertised     = ADVERTISED_20000baseKR2_Full,
1102                 .speed          = 20000,
1103         },
1104         {
1105                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1106                 .supported      = SUPPORTED_40000baseCR4_Full,
1107                 .advertised     = ADVERTISED_40000baseCR4_Full,
1108                 .speed          = 40000,
1109         },
1110         {
1111                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1112                 .supported      = SUPPORTED_40000baseKR4_Full,
1113                 .advertised     = ADVERTISED_40000baseKR4_Full,
1114                 .speed          = 40000,
1115         },
1116         {
1117                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1118                 .supported      = SUPPORTED_40000baseSR4_Full,
1119                 .advertised     = ADVERTISED_40000baseSR4_Full,
1120                 .speed          = 40000,
1121         },
1122         {
1123                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1124                 .supported      = SUPPORTED_40000baseLR4_Full,
1125                 .advertised     = ADVERTISED_40000baseLR4_Full,
1126                 .speed          = 40000,
1127         },
1128         {
1129                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1130                                   MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1131                                   MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1132                 .speed          = 25000,
1133         },
1134         {
1135                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1136                                   MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1137                                   MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1138                 .speed          = 50000,
1139         },
1140         {
1141                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1142                 .supported      = SUPPORTED_56000baseKR4_Full,
1143                 .advertised     = ADVERTISED_56000baseKR4_Full,
1144                 .speed          = 56000,
1145         },
1146         {
1147                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1148                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1149                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1150                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1151                 .speed          = 100000,
1152         },
1153 };
1154
1155 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1156
1157 static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1158 {
1159         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1160                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1161                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1162                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1163                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1164                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1165                 return SUPPORTED_FIBRE;
1166
1167         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1168                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1169                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1170                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1171                               MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1172                 return SUPPORTED_Backplane;
1173         return 0;
1174 }
1175
1176 static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1177 {
1178         u32 modes = 0;
1179         int i;
1180
1181         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1182                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1183                         modes |= mlxsw_sp_port_link_mode[i].supported;
1184         }
1185         return modes;
1186 }
1187
1188 static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1189 {
1190         u32 modes = 0;
1191         int i;
1192
1193         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1194                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1195                         modes |= mlxsw_sp_port_link_mode[i].advertised;
1196         }
1197         return modes;
1198 }
1199
1200 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1201                                             struct ethtool_cmd *cmd)
1202 {
1203         u32 speed = SPEED_UNKNOWN;
1204         u8 duplex = DUPLEX_UNKNOWN;
1205         int i;
1206
1207         if (!carrier_ok)
1208                 goto out;
1209
1210         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1211                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1212                         speed = mlxsw_sp_port_link_mode[i].speed;
1213                         duplex = DUPLEX_FULL;
1214                         break;
1215                 }
1216         }
1217 out:
1218         ethtool_cmd_speed_set(cmd, speed);
1219         cmd->duplex = duplex;
1220 }
1221
1222 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1223 {
1224         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1225                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1226                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1227                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1228                 return PORT_FIBRE;
1229
1230         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1231                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1232                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1233                 return PORT_DA;
1234
1235         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1236                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1237                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1238                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1239                 return PORT_NONE;
1240
1241         return PORT_OTHER;
1242 }
1243
1244 static int mlxsw_sp_port_get_settings(struct net_device *dev,
1245                                       struct ethtool_cmd *cmd)
1246 {
1247         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1248         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1249         char ptys_pl[MLXSW_REG_PTYS_LEN];
1250         u32 eth_proto_cap;
1251         u32 eth_proto_admin;
1252         u32 eth_proto_oper;
1253         int err;
1254
1255         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1256         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1257         if (err) {
1258                 netdev_err(dev, "Failed to get proto");
1259                 return err;
1260         }
1261         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1262                               &eth_proto_admin, &eth_proto_oper);
1263
1264         cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1265                          mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1266                          SUPPORTED_Pause | SUPPORTED_Asym_Pause;
1267         cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1268         mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1269                                         eth_proto_oper, cmd);
1270
1271         eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1272         cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1273         cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1274
1275         cmd->transceiver = XCVR_INTERNAL;
1276         return 0;
1277 }
1278
1279 static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1280 {
1281         u32 ptys_proto = 0;
1282         int i;
1283
1284         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1285                 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1286                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1287         }
1288         return ptys_proto;
1289 }
1290
1291 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1292 {
1293         u32 ptys_proto = 0;
1294         int i;
1295
1296         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1297                 if (speed == mlxsw_sp_port_link_mode[i].speed)
1298                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1299         }
1300         return ptys_proto;
1301 }
1302
1303 static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
1304 {
1305         u32 ptys_proto = 0;
1306         int i;
1307
1308         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1309                 if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
1310                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1311         }
1312         return ptys_proto;
1313 }
1314
1315 static int mlxsw_sp_port_set_settings(struct net_device *dev,
1316                                       struct ethtool_cmd *cmd)
1317 {
1318         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1319         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1320         char ptys_pl[MLXSW_REG_PTYS_LEN];
1321         u32 speed;
1322         u32 eth_proto_new;
1323         u32 eth_proto_cap;
1324         u32 eth_proto_admin;
1325         bool is_up;
1326         int err;
1327
1328         speed = ethtool_cmd_speed(cmd);
1329
1330         eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1331                 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1332                 mlxsw_sp_to_ptys_speed(speed);
1333
1334         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1335         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1336         if (err) {
1337                 netdev_err(dev, "Failed to get proto");
1338                 return err;
1339         }
1340         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1341
1342         eth_proto_new = eth_proto_new & eth_proto_cap;
1343         if (!eth_proto_new) {
1344                 netdev_err(dev, "Not supported proto admin requested");
1345                 return -EINVAL;
1346         }
1347         if (eth_proto_new == eth_proto_admin)
1348                 return 0;
1349
1350         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1351         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1352         if (err) {
1353                 netdev_err(dev, "Failed to set proto admin");
1354                 return err;
1355         }
1356
1357         err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
1358         if (err) {
1359                 netdev_err(dev, "Failed to get oper status");
1360                 return err;
1361         }
1362         if (!is_up)
1363                 return 0;
1364
1365         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1366         if (err) {
1367                 netdev_err(dev, "Failed to set admin status");
1368                 return err;
1369         }
1370
1371         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1372         if (err) {
1373                 netdev_err(dev, "Failed to set admin status");
1374                 return err;
1375         }
1376
1377         return 0;
1378 }
1379
1380 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1381         .get_drvinfo            = mlxsw_sp_port_get_drvinfo,
1382         .get_link               = ethtool_op_get_link,
1383         .get_strings            = mlxsw_sp_port_get_strings,
1384         .set_phys_id            = mlxsw_sp_port_set_phys_id,
1385         .get_ethtool_stats      = mlxsw_sp_port_get_stats,
1386         .get_sset_count         = mlxsw_sp_port_get_sset_count,
1387         .get_settings           = mlxsw_sp_port_get_settings,
1388         .set_settings           = mlxsw_sp_port_set_settings,
1389 };
1390
1391 static int
1392 mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
1393 {
1394         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1395         u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
1396         char ptys_pl[MLXSW_REG_PTYS_LEN];
1397         u32 eth_proto_admin;
1398
1399         eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
1400         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port,
1401                             eth_proto_admin);
1402         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1403 }
1404
1405 static int __mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
1406                                   bool split, u8 module, u8 width)
1407 {
1408         struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
1409         struct mlxsw_sp_port *mlxsw_sp_port;
1410         struct devlink_port *devlink_port;
1411         struct net_device *dev;
1412         size_t bytes;
1413         int err;
1414
1415         dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
1416         if (!dev)
1417                 return -ENOMEM;
1418         mlxsw_sp_port = netdev_priv(dev);
1419         mlxsw_sp_port->dev = dev;
1420         mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
1421         mlxsw_sp_port->local_port = local_port;
1422         mlxsw_sp_port->split = split;
1423         bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
1424         mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
1425         if (!mlxsw_sp_port->active_vlans) {
1426                 err = -ENOMEM;
1427                 goto err_port_active_vlans_alloc;
1428         }
1429         mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
1430         if (!mlxsw_sp_port->untagged_vlans) {
1431                 err = -ENOMEM;
1432                 goto err_port_untagged_vlans_alloc;
1433         }
1434         INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
1435
1436         mlxsw_sp_port->pcpu_stats =
1437                 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1438         if (!mlxsw_sp_port->pcpu_stats) {
1439                 err = -ENOMEM;
1440                 goto err_alloc_stats;
1441         }
1442
1443         dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1444         dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1445
1446         err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1447         if (err) {
1448                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1449                         mlxsw_sp_port->local_port);
1450                 goto err_dev_addr_init;
1451         }
1452
1453         netif_carrier_off(dev);
1454
1455         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1456                          NETIF_F_HW_VLAN_CTAG_FILTER;
1457
1458         /* Each packet needs to have a Tx header (metadata) on top all other
1459          * headers.
1460          */
1461         dev->hard_header_len += MLXSW_TXHDR_LEN;
1462
1463         devlink_port = &mlxsw_sp_port->devlink_port;
1464         if (mlxsw_sp_port->split)
1465                 devlink_port_split_set(devlink_port, module);
1466         err = devlink_port_register(devlink, devlink_port, local_port);
1467         if (err) {
1468                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register devlink port\n",
1469                         mlxsw_sp_port->local_port);
1470                 goto err_devlink_port_register;
1471         }
1472
1473         err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1474         if (err) {
1475                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1476                         mlxsw_sp_port->local_port);
1477                 goto err_port_system_port_mapping_set;
1478         }
1479
1480         err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1481         if (err) {
1482                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1483                         mlxsw_sp_port->local_port);
1484                 goto err_port_swid_set;
1485         }
1486
1487         err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
1488         if (err) {
1489                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
1490                         mlxsw_sp_port->local_port);
1491                 goto err_port_speed_by_width_set;
1492         }
1493
1494         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1495         if (err) {
1496                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1497                         mlxsw_sp_port->local_port);
1498                 goto err_port_mtu_set;
1499         }
1500
1501         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1502         if (err)
1503                 goto err_port_admin_status_set;
1504
1505         err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1506         if (err) {
1507                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1508                         mlxsw_sp_port->local_port);
1509                 goto err_port_buffers_init;
1510         }
1511
1512         mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1513         err = register_netdev(dev);
1514         if (err) {
1515                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1516                         mlxsw_sp_port->local_port);
1517                 goto err_register_netdev;
1518         }
1519
1520         devlink_port_type_eth_set(devlink_port, dev);
1521
1522         err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1523         if (err)
1524                 goto err_port_vlan_init;
1525
1526         mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1527         return 0;
1528
1529 err_port_vlan_init:
1530         unregister_netdev(dev);
1531 err_register_netdev:
1532 err_port_buffers_init:
1533 err_port_admin_status_set:
1534 err_port_mtu_set:
1535 err_port_speed_by_width_set:
1536 err_port_swid_set:
1537 err_port_system_port_mapping_set:
1538         devlink_port_unregister(&mlxsw_sp_port->devlink_port);
1539 err_devlink_port_register:
1540 err_dev_addr_init:
1541         free_percpu(mlxsw_sp_port->pcpu_stats);
1542 err_alloc_stats:
1543         kfree(mlxsw_sp_port->untagged_vlans);
1544 err_port_untagged_vlans_alloc:
1545         kfree(mlxsw_sp_port->active_vlans);
1546 err_port_active_vlans_alloc:
1547         free_netdev(dev);
1548         return err;
1549 }
1550
1551 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
1552                                 bool split, u8 module, u8 width, u8 lane)
1553 {
1554         int err;
1555
1556         err = mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
1557                                        lane);
1558         if (err)
1559                 return err;
1560
1561         err = __mlxsw_sp_port_create(mlxsw_sp, local_port, split, module,
1562                                      width);
1563         if (err)
1564                 goto err_port_create;
1565
1566         return 0;
1567
1568 err_port_create:
1569         mlxsw_sp_port_module_unmap(mlxsw_sp, local_port);
1570         return err;
1571 }
1572
1573 static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1574 {
1575         struct net_device *dev = mlxsw_sp_port->dev;
1576         struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1577
1578         list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1579                                  &mlxsw_sp_port->vports_list, vport.list) {
1580                 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1581
1582                 /* vPorts created for VLAN devices should already be gone
1583                  * by now, since we unregistered the port netdev.
1584                  */
1585                 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1586                 mlxsw_sp_port_kill_vid(dev, 0, vid);
1587         }
1588 }
1589
1590 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1591 {
1592         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1593         struct devlink_port *devlink_port;
1594
1595         if (!mlxsw_sp_port)
1596                 return;
1597         mlxsw_sp->ports[local_port] = NULL;
1598         devlink_port = &mlxsw_sp_port->devlink_port;
1599         devlink_port_type_clear(devlink_port);
1600         unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1601         devlink_port_unregister(devlink_port);
1602         mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1603         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1604         mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
1605         mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
1606         free_percpu(mlxsw_sp_port->pcpu_stats);
1607         kfree(mlxsw_sp_port->untagged_vlans);
1608         kfree(mlxsw_sp_port->active_vlans);
1609         free_netdev(mlxsw_sp_port->dev);
1610 }
1611
1612 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1613 {
1614         int i;
1615
1616         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1617                 mlxsw_sp_port_remove(mlxsw_sp, i);
1618         kfree(mlxsw_sp->ports);
1619 }
1620
1621 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1622 {
1623         size_t alloc_size;
1624         u8 module, width;
1625         int i;
1626         int err;
1627
1628         alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1629         mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1630         if (!mlxsw_sp->ports)
1631                 return -ENOMEM;
1632
1633         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1634                 err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
1635                                                     &width);
1636                 if (err)
1637                         goto err_port_module_info_get;
1638                 if (!width)
1639                         continue;
1640                 mlxsw_sp->port_to_module[i] = module;
1641                 err = __mlxsw_sp_port_create(mlxsw_sp, i, false, module, width);
1642                 if (err)
1643                         goto err_port_create;
1644         }
1645         return 0;
1646
1647 err_port_create:
1648 err_port_module_info_get:
1649         for (i--; i >= 1; i--)
1650                 mlxsw_sp_port_remove(mlxsw_sp, i);
1651         kfree(mlxsw_sp->ports);
1652         return err;
1653 }
1654
1655 static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
1656 {
1657         u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;
1658
1659         return local_port - offset;
1660 }
1661
1662 static int mlxsw_sp_port_split(void *priv, u8 local_port, unsigned int count)
1663 {
1664         struct mlxsw_sp *mlxsw_sp = priv;
1665         struct mlxsw_sp_port *mlxsw_sp_port;
1666         u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
1667         u8 module, cur_width, base_port;
1668         int i;
1669         int err;
1670
1671         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1672         if (!mlxsw_sp_port) {
1673                 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
1674                         local_port);
1675                 return -EINVAL;
1676         }
1677
1678         if (count != 2 && count != 4) {
1679                 netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
1680                 return -EINVAL;
1681         }
1682
1683         err = mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, &module,
1684                                             &cur_width);
1685         if (err) {
1686                 netdev_err(mlxsw_sp_port->dev, "Failed to get port's width\n");
1687                 return err;
1688         }
1689
1690         if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
1691                 netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
1692                 return -EINVAL;
1693         }
1694
1695         /* Make sure we have enough slave (even) ports for the split. */
1696         if (count == 2) {
1697                 base_port = local_port;
1698                 if (mlxsw_sp->ports[base_port + 1]) {
1699                         netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
1700                         return -EINVAL;
1701                 }
1702         } else {
1703                 base_port = mlxsw_sp_cluster_base_port_get(local_port);
1704                 if (mlxsw_sp->ports[base_port + 1] ||
1705                     mlxsw_sp->ports[base_port + 3]) {
1706                         netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
1707                         return -EINVAL;
1708                 }
1709         }
1710
1711         for (i = 0; i < count; i++)
1712                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
1713
1714         for (i = 0; i < count; i++) {
1715                 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
1716                                            module, width, i * width);
1717                 if (err) {
1718                         dev_err(mlxsw_sp->bus_info->dev, "Failed to create split port\n");
1719                         goto err_port_create;
1720                 }
1721         }
1722
1723         return 0;
1724
1725 err_port_create:
1726         for (i--; i >= 0; i--)
1727                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
1728         for (i = 0; i < count / 2; i++) {
1729                 module = mlxsw_sp->port_to_module[base_port + i * 2];
1730                 mlxsw_sp_port_create(mlxsw_sp, base_port + i * 2, false,
1731                                      module, MLXSW_PORT_MODULE_MAX_WIDTH, 0);
1732         }
1733         return err;
1734 }
1735
1736 static int mlxsw_sp_port_unsplit(void *priv, u8 local_port)
1737 {
1738         struct mlxsw_sp *mlxsw_sp = priv;
1739         struct mlxsw_sp_port *mlxsw_sp_port;
1740         u8 module, cur_width, base_port;
1741         unsigned int count;
1742         int i;
1743         int err;
1744
1745         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1746         if (!mlxsw_sp_port) {
1747                 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
1748                         local_port);
1749                 return -EINVAL;
1750         }
1751
1752         if (!mlxsw_sp_port->split) {
1753                 netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
1754                 return -EINVAL;
1755         }
1756
1757         err = mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, &module,
1758                                             &cur_width);
1759         if (err) {
1760                 netdev_err(mlxsw_sp_port->dev, "Failed to get port's width\n");
1761                 return err;
1762         }
1763         count = cur_width == 1 ? 4 : 2;
1764
1765         base_port = mlxsw_sp_cluster_base_port_get(local_port);
1766
1767         /* Determine which ports to remove. */
1768         if (count == 2 && local_port >= base_port + 2)
1769                 base_port = base_port + 2;
1770
1771         for (i = 0; i < count; i++)
1772                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
1773
1774         for (i = 0; i < count / 2; i++) {
1775                 module = mlxsw_sp->port_to_module[base_port + i * 2];
1776                 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i * 2, false,
1777                                            module, MLXSW_PORT_MODULE_MAX_WIDTH,
1778                                            0);
1779                 if (err)
1780                         dev_err(mlxsw_sp->bus_info->dev, "Failed to reinstantiate port\n");
1781         }
1782
1783         return 0;
1784 }
1785
1786 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1787                                      char *pude_pl, void *priv)
1788 {
1789         struct mlxsw_sp *mlxsw_sp = priv;
1790         struct mlxsw_sp_port *mlxsw_sp_port;
1791         enum mlxsw_reg_pude_oper_status status;
1792         u8 local_port;
1793
1794         local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1795         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1796         if (!mlxsw_sp_port) {
1797                 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1798                          local_port);
1799                 return;
1800         }
1801
1802         status = mlxsw_reg_pude_oper_status_get(pude_pl);
1803         if (status == MLXSW_PORT_OPER_STATUS_UP) {
1804                 netdev_info(mlxsw_sp_port->dev, "link up\n");
1805                 netif_carrier_on(mlxsw_sp_port->dev);
1806         } else {
1807                 netdev_info(mlxsw_sp_port->dev, "link down\n");
1808                 netif_carrier_off(mlxsw_sp_port->dev);
1809         }
1810 }
1811
1812 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1813         .func = mlxsw_sp_pude_event_func,
1814         .trap_id = MLXSW_TRAP_ID_PUDE,
1815 };
1816
1817 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1818                                    enum mlxsw_event_trap_id trap_id)
1819 {
1820         struct mlxsw_event_listener *el;
1821         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1822         int err;
1823
1824         switch (trap_id) {
1825         case MLXSW_TRAP_ID_PUDE:
1826                 el = &mlxsw_sp_pude_event;
1827                 break;
1828         }
1829         err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1830         if (err)
1831                 return err;
1832
1833         mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1834         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1835         if (err)
1836                 goto err_event_trap_set;
1837
1838         return 0;
1839
1840 err_event_trap_set:
1841         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1842         return err;
1843 }
1844
1845 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1846                                       enum mlxsw_event_trap_id trap_id)
1847 {
1848         struct mlxsw_event_listener *el;
1849
1850         switch (trap_id) {
1851         case MLXSW_TRAP_ID_PUDE:
1852                 el = &mlxsw_sp_pude_event;
1853                 break;
1854         }
1855         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1856 }
1857
1858 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1859                                       void *priv)
1860 {
1861         struct mlxsw_sp *mlxsw_sp = priv;
1862         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1863         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1864
1865         if (unlikely(!mlxsw_sp_port)) {
1866                 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1867                                      local_port);
1868                 return;
1869         }
1870
1871         skb->dev = mlxsw_sp_port->dev;
1872
1873         pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1874         u64_stats_update_begin(&pcpu_stats->syncp);
1875         pcpu_stats->rx_packets++;
1876         pcpu_stats->rx_bytes += skb->len;
1877         u64_stats_update_end(&pcpu_stats->syncp);
1878
1879         skb->protocol = eth_type_trans(skb, skb->dev);
1880         netif_receive_skb(skb);
1881 }
1882
1883 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1884         {
1885                 .func = mlxsw_sp_rx_listener_func,
1886                 .local_port = MLXSW_PORT_DONT_CARE,
1887                 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1888         },
1889         /* Traps for specific L2 packet types, not trapped as FDB MC */
1890         {
1891                 .func = mlxsw_sp_rx_listener_func,
1892                 .local_port = MLXSW_PORT_DONT_CARE,
1893                 .trap_id = MLXSW_TRAP_ID_STP,
1894         },
1895         {
1896                 .func = mlxsw_sp_rx_listener_func,
1897                 .local_port = MLXSW_PORT_DONT_CARE,
1898                 .trap_id = MLXSW_TRAP_ID_LACP,
1899         },
1900         {
1901                 .func = mlxsw_sp_rx_listener_func,
1902                 .local_port = MLXSW_PORT_DONT_CARE,
1903                 .trap_id = MLXSW_TRAP_ID_EAPOL,
1904         },
1905         {
1906                 .func = mlxsw_sp_rx_listener_func,
1907                 .local_port = MLXSW_PORT_DONT_CARE,
1908                 .trap_id = MLXSW_TRAP_ID_LLDP,
1909         },
1910         {
1911                 .func = mlxsw_sp_rx_listener_func,
1912                 .local_port = MLXSW_PORT_DONT_CARE,
1913                 .trap_id = MLXSW_TRAP_ID_MMRP,
1914         },
1915         {
1916                 .func = mlxsw_sp_rx_listener_func,
1917                 .local_port = MLXSW_PORT_DONT_CARE,
1918                 .trap_id = MLXSW_TRAP_ID_MVRP,
1919         },
1920         {
1921                 .func = mlxsw_sp_rx_listener_func,
1922                 .local_port = MLXSW_PORT_DONT_CARE,
1923                 .trap_id = MLXSW_TRAP_ID_RPVST,
1924         },
1925         {
1926                 .func = mlxsw_sp_rx_listener_func,
1927                 .local_port = MLXSW_PORT_DONT_CARE,
1928                 .trap_id = MLXSW_TRAP_ID_DHCP,
1929         },
1930         {
1931                 .func = mlxsw_sp_rx_listener_func,
1932                 .local_port = MLXSW_PORT_DONT_CARE,
1933                 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1934         },
1935         {
1936                 .func = mlxsw_sp_rx_listener_func,
1937                 .local_port = MLXSW_PORT_DONT_CARE,
1938                 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1939         },
1940         {
1941                 .func = mlxsw_sp_rx_listener_func,
1942                 .local_port = MLXSW_PORT_DONT_CARE,
1943                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1944         },
1945         {
1946                 .func = mlxsw_sp_rx_listener_func,
1947                 .local_port = MLXSW_PORT_DONT_CARE,
1948                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1949         },
1950         {
1951                 .func = mlxsw_sp_rx_listener_func,
1952                 .local_port = MLXSW_PORT_DONT_CARE,
1953                 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1954         },
1955 };
1956
1957 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1958 {
1959         char htgt_pl[MLXSW_REG_HTGT_LEN];
1960         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1961         int i;
1962         int err;
1963
1964         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1965         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1966         if (err)
1967                 return err;
1968
1969         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1970         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1971         if (err)
1972                 return err;
1973
1974         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1975                 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1976                                                       &mlxsw_sp_rx_listener[i],
1977                                                       mlxsw_sp);
1978                 if (err)
1979                         goto err_rx_listener_register;
1980
1981                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1982                                     mlxsw_sp_rx_listener[i].trap_id);
1983                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1984                 if (err)
1985                         goto err_rx_trap_set;
1986         }
1987         return 0;
1988
1989 err_rx_trap_set:
1990         mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1991                                           &mlxsw_sp_rx_listener[i],
1992                                           mlxsw_sp);
1993 err_rx_listener_register:
1994         for (i--; i >= 0; i--) {
1995                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1996                                     mlxsw_sp_rx_listener[i].trap_id);
1997                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1998
1999                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2000                                                   &mlxsw_sp_rx_listener[i],
2001                                                   mlxsw_sp);
2002         }
2003         return err;
2004 }
2005
2006 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
2007 {
2008         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2009         int i;
2010
2011         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2012                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
2013                                     mlxsw_sp_rx_listener[i].trap_id);
2014                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2015
2016                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2017                                                   &mlxsw_sp_rx_listener[i],
2018                                                   mlxsw_sp);
2019         }
2020 }
2021
2022 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
2023                                  enum mlxsw_reg_sfgc_type type,
2024                                  enum mlxsw_reg_sfgc_bridge_type bridge_type)
2025 {
2026         enum mlxsw_flood_table_type table_type;
2027         enum mlxsw_sp_flood_table flood_table;
2028         char sfgc_pl[MLXSW_REG_SFGC_LEN];
2029
2030         if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2031                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2032         else
2033                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2034
2035         if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
2036                 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
2037         else
2038                 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2039
2040         mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
2041                             flood_table);
2042         return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
2043 }
2044
2045 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
2046 {
2047         int type, err;
2048
2049         for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
2050                 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
2051                         continue;
2052
2053                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2054                                             MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
2055                 if (err)
2056                         return err;
2057
2058                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2059                                             MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
2060                 if (err)
2061                         return err;
2062         }
2063
2064         return 0;
2065 }
2066
2067 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
2068 {
2069         char slcr_pl[MLXSW_REG_SLCR_LEN];
2070
2071         mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
2072                                      MLXSW_REG_SLCR_LAG_HASH_DMAC |
2073                                      MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
2074                                      MLXSW_REG_SLCR_LAG_HASH_VLANID |
2075                                      MLXSW_REG_SLCR_LAG_HASH_SIP |
2076                                      MLXSW_REG_SLCR_LAG_HASH_DIP |
2077                                      MLXSW_REG_SLCR_LAG_HASH_SPORT |
2078                                      MLXSW_REG_SLCR_LAG_HASH_DPORT |
2079                                      MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
2080         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
2081 }
2082
2083 static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
2084                          const struct mlxsw_bus_info *mlxsw_bus_info)
2085 {
2086         struct mlxsw_sp *mlxsw_sp = priv;
2087         int err;
2088
2089         mlxsw_sp->core = mlxsw_core;
2090         mlxsw_sp->bus_info = mlxsw_bus_info;
2091         INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
2092         INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
2093         INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2094
2095         err = mlxsw_sp_base_mac_get(mlxsw_sp);
2096         if (err) {
2097                 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
2098                 return err;
2099         }
2100
2101         err = mlxsw_sp_ports_create(mlxsw_sp);
2102         if (err) {
2103                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
2104                 return err;
2105         }
2106
2107         err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2108         if (err) {
2109                 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
2110                 goto err_event_register;
2111         }
2112
2113         err = mlxsw_sp_traps_init(mlxsw_sp);
2114         if (err) {
2115                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
2116                 goto err_rx_listener_register;
2117         }
2118
2119         err = mlxsw_sp_flood_init(mlxsw_sp);
2120         if (err) {
2121                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
2122                 goto err_flood_init;
2123         }
2124
2125         err = mlxsw_sp_buffers_init(mlxsw_sp);
2126         if (err) {
2127                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
2128                 goto err_buffers_init;
2129         }
2130
2131         err = mlxsw_sp_lag_init(mlxsw_sp);
2132         if (err) {
2133                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
2134                 goto err_lag_init;
2135         }
2136
2137         err = mlxsw_sp_switchdev_init(mlxsw_sp);
2138         if (err) {
2139                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
2140                 goto err_switchdev_init;
2141         }
2142
2143         return 0;
2144
2145 err_switchdev_init:
2146 err_lag_init:
2147 err_buffers_init:
2148 err_flood_init:
2149         mlxsw_sp_traps_fini(mlxsw_sp);
2150 err_rx_listener_register:
2151         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2152 err_event_register:
2153         mlxsw_sp_ports_remove(mlxsw_sp);
2154         return err;
2155 }
2156
2157 static void mlxsw_sp_fini(void *priv)
2158 {
2159         struct mlxsw_sp *mlxsw_sp = priv;
2160
2161         mlxsw_sp_switchdev_fini(mlxsw_sp);
2162         mlxsw_sp_traps_fini(mlxsw_sp);
2163         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2164         mlxsw_sp_ports_remove(mlxsw_sp);
2165 }
2166
2167 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
2168         .used_max_vepa_channels         = 1,
2169         .max_vepa_channels              = 0,
2170         .used_max_lag                   = 1,
2171         .max_lag                        = MLXSW_SP_LAG_MAX,
2172         .used_max_port_per_lag          = 1,
2173         .max_port_per_lag               = MLXSW_SP_PORT_PER_LAG_MAX,
2174         .used_max_mid                   = 1,
2175         .max_mid                        = MLXSW_SP_MID_MAX,
2176         .used_max_pgt                   = 1,
2177         .max_pgt                        = 0,
2178         .used_max_system_port           = 1,
2179         .max_system_port                = 64,
2180         .used_max_vlan_groups           = 1,
2181         .max_vlan_groups                = 127,
2182         .used_max_regions               = 1,
2183         .max_regions                    = 400,
2184         .used_flood_tables              = 1,
2185         .used_flood_mode                = 1,
2186         .flood_mode                     = 3,
2187         .max_fid_offset_flood_tables    = 2,
2188         .fid_offset_flood_table_size    = VLAN_N_VID - 1,
2189         .max_fid_flood_tables           = 2,
2190         .fid_flood_table_size           = MLXSW_SP_VFID_MAX,
2191         .used_max_ib_mc                 = 1,
2192         .max_ib_mc                      = 0,
2193         .used_max_pkey                  = 1,
2194         .max_pkey                       = 0,
2195         .swid_config                    = {
2196                 {
2197                         .used_type      = 1,
2198                         .type           = MLXSW_PORT_SWID_TYPE_ETH,
2199                 }
2200         },
2201 };
2202
2203 static struct mlxsw_driver mlxsw_sp_driver = {
2204         .kind                   = MLXSW_DEVICE_KIND_SPECTRUM,
2205         .owner                  = THIS_MODULE,
2206         .priv_size              = sizeof(struct mlxsw_sp),
2207         .init                   = mlxsw_sp_init,
2208         .fini                   = mlxsw_sp_fini,
2209         .port_split             = mlxsw_sp_port_split,
2210         .port_unsplit           = mlxsw_sp_port_unsplit,
2211         .txhdr_construct        = mlxsw_sp_txhdr_construct,
2212         .txhdr_len              = MLXSW_TXHDR_LEN,
2213         .profile                = &mlxsw_sp_config_profile,
2214 };
2215
2216 static int
2217 mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port)
2218 {
2219         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2220         char sfdf_pl[MLXSW_REG_SFDF_LEN];
2221
2222         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT);
2223         mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port);
2224
2225         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2226 }
2227
2228 static int
2229 mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
2230                                     u16 fid)
2231 {
2232         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2233         char sfdf_pl[MLXSW_REG_SFDF_LEN];
2234
2235         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
2236         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
2237         mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
2238                                                 mlxsw_sp_port->local_port);
2239
2240         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2241 }
2242
2243 static int
2244 mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port)
2245 {
2246         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2247         char sfdf_pl[MLXSW_REG_SFDF_LEN];
2248
2249         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG);
2250         mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
2251
2252         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2253 }
2254
2255 static int
2256 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
2257                                       u16 fid)
2258 {
2259         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2260         char sfdf_pl[MLXSW_REG_SFDF_LEN];
2261
2262         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
2263         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
2264         mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
2265
2266         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2267 }
2268
2269 static int
2270 __mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port)
2271 {
2272         int err, last_err = 0;
2273         u16 vid;
2274
2275         for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
2276                 err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid);
2277                 if (err)
2278                         last_err = err;
2279         }
2280
2281         return last_err;
2282 }
2283
2284 static int
2285 __mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port)
2286 {
2287         int err, last_err = 0;
2288         u16 vid;
2289
2290         for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
2291                 err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid);
2292                 if (err)
2293                         last_err = err;
2294         }
2295
2296         return last_err;
2297 }
2298
2299 static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
2300 {
2301         if (!list_empty(&mlxsw_sp_port->vports_list))
2302                 if (mlxsw_sp_port->lagged)
2303                         return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port);
2304                 else
2305                         return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port);
2306         else
2307                 if (mlxsw_sp_port->lagged)
2308                         return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port);
2309                 else
2310                         return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
2311 }
2312
2313 static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
2314 {
2315         u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport);
2316         u16 fid = mlxsw_sp_vfid_to_fid(vfid);
2317
2318         if (mlxsw_sp_vport->lagged)
2319                 return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
2320                                                              fid);
2321         else
2322                 return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid);
2323 }
2324
2325 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
2326 {
2327         return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
2328 }
2329
2330 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
2331 {
2332         struct net_device *dev = mlxsw_sp_port->dev;
2333         int err;
2334
2335         /* When port is not bridged untagged packets are tagged with
2336          * PVID=VID=1, thereby creating an implicit VLAN interface in
2337          * the device. Remove it and let bridge code take care of its
2338          * own VLANs.
2339          */
2340         err = mlxsw_sp_port_kill_vid(dev, 0, 1);
2341         if (err)
2342                 return err;
2343
2344         mlxsw_sp_port->learning = 1;
2345         mlxsw_sp_port->learning_sync = 1;
2346         mlxsw_sp_port->uc_flood = 1;
2347         mlxsw_sp_port->bridged = 1;
2348
2349         return 0;
2350 }
2351
2352 static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2353                                       bool flush_fdb)
2354 {
2355         struct net_device *dev = mlxsw_sp_port->dev;
2356
2357         if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port))
2358                 netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2359
2360         mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
2361
2362         mlxsw_sp_port->learning = 0;
2363         mlxsw_sp_port->learning_sync = 0;
2364         mlxsw_sp_port->uc_flood = 0;
2365         mlxsw_sp_port->bridged = 0;
2366
2367         /* Add implicit VLAN interface in the device, so that untagged
2368          * packets will be classified to the default vFID.
2369          */
2370         return mlxsw_sp_port_add_vid(dev, 0, 1);
2371 }
2372
2373 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2374                                          struct net_device *br_dev)
2375 {
2376         return !mlxsw_sp->master_bridge.dev ||
2377                mlxsw_sp->master_bridge.dev == br_dev;
2378 }
2379
2380 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2381                                        struct net_device *br_dev)
2382 {
2383         mlxsw_sp->master_bridge.dev = br_dev;
2384         mlxsw_sp->master_bridge.ref_count++;
2385 }
2386
2387 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2388                                        struct net_device *br_dev)
2389 {
2390         if (--mlxsw_sp->master_bridge.ref_count == 0)
2391                 mlxsw_sp->master_bridge.dev = NULL;
2392 }
2393
2394 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2395 {
2396         char sldr_pl[MLXSW_REG_SLDR_LEN];
2397
2398         mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2399         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2400 }
2401
2402 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2403 {
2404         char sldr_pl[MLXSW_REG_SLDR_LEN];
2405
2406         mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2407         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2408 }
2409
2410 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2411                                      u16 lag_id, u8 port_index)
2412 {
2413         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2414         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2415
2416         mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2417                                       lag_id, port_index);
2418         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2419 }
2420
2421 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2422                                         u16 lag_id)
2423 {
2424         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2425         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2426
2427         mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2428                                          lag_id);
2429         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2430 }
2431
2432 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2433                                         u16 lag_id)
2434 {
2435         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2436         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2437
2438         mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2439                                         lag_id);
2440         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2441 }
2442
2443 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2444                                          u16 lag_id)
2445 {
2446         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2447         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2448
2449         mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2450                                          lag_id);
2451         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2452 }
2453
2454 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2455                                   struct net_device *lag_dev,
2456                                   u16 *p_lag_id)
2457 {
2458         struct mlxsw_sp_upper *lag;
2459         int free_lag_id = -1;
2460         int i;
2461
2462         for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2463                 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2464                 if (lag->ref_count) {
2465                         if (lag->dev == lag_dev) {
2466                                 *p_lag_id = i;
2467                                 return 0;
2468                         }
2469                 } else if (free_lag_id < 0) {
2470                         free_lag_id = i;
2471                 }
2472         }
2473         if (free_lag_id < 0)
2474                 return -EBUSY;
2475         *p_lag_id = free_lag_id;
2476         return 0;
2477 }
2478
2479 static bool
2480 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2481                           struct net_device *lag_dev,
2482                           struct netdev_lag_upper_info *lag_upper_info)
2483 {
2484         u16 lag_id;
2485
2486         if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2487                 return false;
2488         if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2489                 return false;
2490         return true;
2491 }
2492
2493 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2494                                        u16 lag_id, u8 *p_port_index)
2495 {
2496         int i;
2497
2498         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2499                 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2500                         *p_port_index = i;
2501                         return 0;
2502                 }
2503         }
2504         return -EBUSY;
2505 }
2506
2507 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2508                                   struct net_device *lag_dev)
2509 {
2510         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2511         struct mlxsw_sp_upper *lag;
2512         u16 lag_id;
2513         u8 port_index;
2514         int err;
2515
2516         err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2517         if (err)
2518                 return err;
2519         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2520         if (!lag->ref_count) {
2521                 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2522                 if (err)
2523                         return err;
2524                 lag->dev = lag_dev;
2525         }
2526
2527         err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2528         if (err)
2529                 return err;
2530         err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2531         if (err)
2532                 goto err_col_port_add;
2533         err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2534         if (err)
2535                 goto err_col_port_enable;
2536
2537         mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2538                                    mlxsw_sp_port->local_port);
2539         mlxsw_sp_port->lag_id = lag_id;
2540         mlxsw_sp_port->lagged = 1;
2541         lag->ref_count++;
2542         return 0;
2543
2544 err_col_port_add:
2545         if (!lag->ref_count)
2546                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2547 err_col_port_enable:
2548         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2549         return err;
2550 }
2551
2552 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2553                                        struct net_device *br_dev,
2554                                        bool flush_fdb);
2555
2556 static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2557                                    struct net_device *lag_dev)
2558 {
2559         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2560         struct mlxsw_sp_port *mlxsw_sp_vport;
2561         struct mlxsw_sp_upper *lag;
2562         u16 lag_id = mlxsw_sp_port->lag_id;
2563         int err;
2564
2565         if (!mlxsw_sp_port->lagged)
2566                 return 0;
2567         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2568         WARN_ON(lag->ref_count == 0);
2569
2570         err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2571         if (err)
2572                 return err;
2573         err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2574         if (err)
2575                 return err;
2576
2577         /* In case we leave a LAG device that has bridges built on top,
2578          * then their teardown sequence is never issued and we need to
2579          * invoke the necessary cleanup routines ourselves.
2580          */
2581         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2582                             vport.list) {
2583                 struct net_device *br_dev;
2584
2585                 if (!mlxsw_sp_vport->bridged)
2586                         continue;
2587
2588                 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2589                 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false);
2590         }
2591
2592         if (mlxsw_sp_port->bridged) {
2593                 mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
2594                 mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
2595                 mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL);
2596         }
2597
2598         if (lag->ref_count == 1) {
2599                 if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
2600                         netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2601                 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2602                 if (err)
2603                         return err;
2604         }
2605
2606         mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2607                                      mlxsw_sp_port->local_port);
2608         mlxsw_sp_port->lagged = 0;
2609         lag->ref_count--;
2610         return 0;
2611 }
2612
2613 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2614                                       u16 lag_id)
2615 {
2616         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2617         char sldr_pl[MLXSW_REG_SLDR_LEN];
2618
2619         mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2620                                          mlxsw_sp_port->local_port);
2621         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2622 }
2623
2624 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2625                                          u16 lag_id)
2626 {
2627         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2628         char sldr_pl[MLXSW_REG_SLDR_LEN];
2629
2630         mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2631                                             mlxsw_sp_port->local_port);
2632         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2633 }
2634
2635 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2636                                        bool lag_tx_enabled)
2637 {
2638         if (lag_tx_enabled)
2639                 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2640                                                   mlxsw_sp_port->lag_id);
2641         else
2642                 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2643                                                      mlxsw_sp_port->lag_id);
2644 }
2645
2646 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2647                                      struct netdev_lag_lower_state_info *info)
2648 {
2649         return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2650 }
2651
2652 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2653                                    struct net_device *vlan_dev)
2654 {
2655         struct mlxsw_sp_port *mlxsw_sp_vport;
2656         u16 vid = vlan_dev_vlan_id(vlan_dev);
2657
2658         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2659         if (!mlxsw_sp_vport) {
2660                 WARN_ON(!mlxsw_sp_vport);
2661                 return -EINVAL;
2662         }
2663
2664         mlxsw_sp_vport->dev = vlan_dev;
2665
2666         return 0;
2667 }
2668
2669 static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2670                                      struct net_device *vlan_dev)
2671 {
2672         struct mlxsw_sp_port *mlxsw_sp_vport;
2673         u16 vid = vlan_dev_vlan_id(vlan_dev);
2674
2675         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2676         if (!mlxsw_sp_vport) {
2677                 WARN_ON(!mlxsw_sp_vport);
2678                 return -EINVAL;
2679         }
2680
2681         /* When removing a VLAN device while still bridged we should first
2682          * remove it from the bridge, as we receive the bridge's notification
2683          * when the vPort is already gone.
2684          */
2685         if (mlxsw_sp_vport->bridged) {
2686                 struct net_device *br_dev;
2687
2688                 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2689                 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true);
2690         }
2691
2692         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2693
2694         return 0;
2695 }
2696
2697 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2698                                                unsigned long event, void *ptr)
2699 {
2700         struct netdev_notifier_changeupper_info *info;
2701         struct mlxsw_sp_port *mlxsw_sp_port;
2702         struct net_device *upper_dev;
2703         struct mlxsw_sp *mlxsw_sp;
2704         int err;
2705
2706         mlxsw_sp_port = netdev_priv(dev);
2707         mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2708         info = ptr;
2709
2710         switch (event) {
2711         case NETDEV_PRECHANGEUPPER:
2712                 upper_dev = info->upper_dev;
2713                 if (!info->master || !info->linking)
2714                         break;
2715                 /* HW limitation forbids to put ports to multiple bridges. */
2716                 if (netif_is_bridge_master(upper_dev) &&
2717                     !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2718                         return NOTIFY_BAD;
2719                 if (netif_is_lag_master(upper_dev) &&
2720                     !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2721                                                info->upper_info))
2722                         return NOTIFY_BAD;
2723                 break;
2724         case NETDEV_CHANGEUPPER:
2725                 upper_dev = info->upper_dev;
2726                 if (is_vlan_dev(upper_dev)) {
2727                         if (info->linking) {
2728                                 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2729                                                               upper_dev);
2730                                 if (err) {
2731                                         netdev_err(dev, "Failed to link VLAN device\n");
2732                                         return NOTIFY_BAD;
2733                                 }
2734                         } else {
2735                                 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2736                                                                 upper_dev);
2737                                 if (err) {
2738                                         netdev_err(dev, "Failed to unlink VLAN device\n");
2739                                         return NOTIFY_BAD;
2740                                 }
2741                         }
2742                 } else if (netif_is_bridge_master(upper_dev)) {
2743                         if (info->linking) {
2744                                 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2745                                 if (err) {
2746                                         netdev_err(dev, "Failed to join bridge\n");
2747                                         return NOTIFY_BAD;
2748                                 }
2749                                 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
2750                         } else {
2751                                 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
2752                                                                  true);
2753                                 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2754                                 if (err) {
2755                                         netdev_err(dev, "Failed to leave bridge\n");
2756                                         return NOTIFY_BAD;
2757                                 }
2758                         }
2759                 } else if (netif_is_lag_master(upper_dev)) {
2760                         if (info->linking) {
2761                                 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2762                                                              upper_dev);
2763                                 if (err) {
2764                                         netdev_err(dev, "Failed to join link aggregation\n");
2765                                         return NOTIFY_BAD;
2766                                 }
2767                         } else {
2768                                 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2769                                                               upper_dev);
2770                                 if (err) {
2771                                         netdev_err(dev, "Failed to leave link aggregation\n");
2772                                         return NOTIFY_BAD;
2773                                 }
2774                         }
2775                 }
2776                 break;
2777         }
2778
2779         return NOTIFY_DONE;
2780 }
2781
2782 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2783                                                unsigned long event, void *ptr)
2784 {
2785         struct netdev_notifier_changelowerstate_info *info;
2786         struct mlxsw_sp_port *mlxsw_sp_port;
2787         int err;
2788
2789         mlxsw_sp_port = netdev_priv(dev);
2790         info = ptr;
2791
2792         switch (event) {
2793         case NETDEV_CHANGELOWERSTATE:
2794                 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2795                         err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2796                                                         info->lower_state_info);
2797                         if (err)
2798                                 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2799                 }
2800                 break;
2801         }
2802
2803         return NOTIFY_DONE;
2804 }
2805
2806 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2807                                          unsigned long event, void *ptr)
2808 {
2809         switch (event) {
2810         case NETDEV_PRECHANGEUPPER:
2811         case NETDEV_CHANGEUPPER:
2812                 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2813         case NETDEV_CHANGELOWERSTATE:
2814                 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2815         }
2816
2817         return NOTIFY_DONE;
2818 }
2819
2820 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2821                                         unsigned long event, void *ptr)
2822 {
2823         struct net_device *dev;
2824         struct list_head *iter;
2825         int ret;
2826
2827         netdev_for_each_lower_dev(lag_dev, dev, iter) {
2828                 if (mlxsw_sp_port_dev_check(dev)) {
2829                         ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2830                         if (ret == NOTIFY_BAD)
2831                                 return ret;
2832                 }
2833         }
2834
2835         return NOTIFY_DONE;
2836 }
2837
2838 static struct mlxsw_sp_vfid *
2839 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2840                       const struct net_device *br_dev)
2841 {
2842         struct mlxsw_sp_vfid *vfid;
2843
2844         list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2845                 if (vfid->br_dev == br_dev)
2846                         return vfid;
2847         }
2848
2849         return NULL;
2850 }
2851
2852 static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2853 {
2854         return vfid - MLXSW_SP_VFID_PORT_MAX;
2855 }
2856
2857 static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2858 {
2859         return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2860 }
2861
2862 static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2863 {
2864         return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2865                                    MLXSW_SP_VFID_BR_MAX);
2866 }
2867
2868 static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2869                                                      struct net_device *br_dev)
2870 {
2871         struct device *dev = mlxsw_sp->bus_info->dev;
2872         struct mlxsw_sp_vfid *vfid;
2873         u16 n_vfid;
2874         int err;
2875
2876         n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2877         if (n_vfid == MLXSW_SP_VFID_MAX) {
2878                 dev_err(dev, "No available vFIDs\n");
2879                 return ERR_PTR(-ERANGE);
2880         }
2881
2882         err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2883         if (err) {
2884                 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2885                 return ERR_PTR(err);
2886         }
2887
2888         vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2889         if (!vfid)
2890                 goto err_allocate_vfid;
2891
2892         vfid->vfid = n_vfid;
2893         vfid->br_dev = br_dev;
2894
2895         list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2896         set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2897
2898         return vfid;
2899
2900 err_allocate_vfid:
2901         __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2902         return ERR_PTR(-ENOMEM);
2903 }
2904
2905 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2906                                      struct mlxsw_sp_vfid *vfid)
2907 {
2908         u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2909
2910         clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2911         list_del(&vfid->list);
2912
2913         __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2914
2915         kfree(vfid);
2916 }
2917
2918 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2919                                        struct net_device *br_dev,
2920                                        bool flush_fdb)
2921 {
2922         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2923         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2924         struct net_device *dev = mlxsw_sp_vport->dev;
2925         struct mlxsw_sp_vfid *vfid, *new_vfid;
2926         int err;
2927
2928         vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2929         if (!vfid) {
2930                 WARN_ON(!vfid);
2931                 return -EINVAL;
2932         }
2933
2934         /* We need a vFID to go back to after leaving the bridge's vFID. */
2935         new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2936         if (!new_vfid) {
2937                 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2938                 if (IS_ERR(new_vfid)) {
2939                         netdev_err(dev, "Failed to create vFID for VID=%d\n",
2940                                    vid);
2941                         return PTR_ERR(new_vfid);
2942                 }
2943         }
2944
2945         /* Invalidate existing {Port, VID} to vFID mapping and create a new
2946          * one for the new vFID.
2947          */
2948         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2949                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2950                                            false,
2951                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
2952                                            vid);
2953         if (err) {
2954                 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2955                            vfid->vfid);
2956                 goto err_port_vid_to_fid_invalidate;
2957         }
2958
2959         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2960                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2961                                            true,
2962                                            mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2963                                            vid);
2964         if (err) {
2965                 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2966                            new_vfid->vfid);
2967                 goto err_port_vid_to_fid_validate;
2968         }
2969
2970         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2971         if (err) {
2972                 netdev_err(dev, "Failed to disable learning\n");
2973                 goto err_port_vid_learning_set;
2974         }
2975
2976         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2977                                        false);
2978         if (err) {
2979                 netdev_err(dev, "Failed clear to clear flooding\n");
2980                 goto err_vport_flood_set;
2981         }
2982
2983         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
2984                                           MLXSW_REG_SPMS_STATE_FORWARDING);
2985         if (err) {
2986                 netdev_err(dev, "Failed to set STP state\n");
2987                 goto err_port_stp_state_set;
2988         }
2989
2990         if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport))
2991                 netdev_err(dev, "Failed to flush FDB\n");
2992
2993         /* Switch between the vFIDs and destroy the old one if needed. */
2994         new_vfid->nr_vports++;
2995         mlxsw_sp_vport->vport.vfid = new_vfid;
2996         vfid->nr_vports--;
2997         if (!vfid->nr_vports)
2998                 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2999
3000         mlxsw_sp_vport->learning = 0;
3001         mlxsw_sp_vport->learning_sync = 0;
3002         mlxsw_sp_vport->uc_flood = 0;
3003         mlxsw_sp_vport->bridged = 0;
3004
3005         return 0;
3006
3007 err_port_stp_state_set:
3008 err_vport_flood_set:
3009 err_port_vid_learning_set:
3010 err_port_vid_to_fid_validate:
3011 err_port_vid_to_fid_invalidate:
3012         /* Rollback vFID only if new. */
3013         if (!new_vfid->nr_vports)
3014                 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
3015         return err;
3016 }
3017
3018 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
3019                                       struct net_device *br_dev)
3020 {
3021         struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
3022         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3023         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
3024         struct net_device *dev = mlxsw_sp_vport->dev;
3025         struct mlxsw_sp_vfid *vfid;
3026         int err;
3027
3028         vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
3029         if (!vfid) {
3030                 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
3031                 if (IS_ERR(vfid)) {
3032                         netdev_err(dev, "Failed to create bridge vFID\n");
3033                         return PTR_ERR(vfid);
3034                 }
3035         }
3036
3037         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
3038         if (err) {
3039                 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
3040                            vfid->vfid);
3041                 goto err_port_flood_set;
3042         }
3043
3044         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
3045         if (err) {
3046                 netdev_err(dev, "Failed to enable learning\n");
3047                 goto err_port_vid_learning_set;
3048         }
3049
3050         /* We need to invalidate existing {Port, VID} to vFID mapping and
3051          * create a new one for the bridge's vFID.
3052          */
3053         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
3054                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
3055                                            false,
3056                                            mlxsw_sp_vfid_to_fid(old_vfid->vfid),
3057                                            vid);
3058         if (err) {
3059                 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
3060                            old_vfid->vfid);
3061                 goto err_port_vid_to_fid_invalidate;
3062         }
3063
3064         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
3065                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
3066                                            true,
3067                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
3068                                            vid);
3069         if (err) {
3070                 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
3071                            vfid->vfid);
3072                 goto err_port_vid_to_fid_validate;
3073         }
3074
3075         /* Switch between the vFIDs and destroy the old one if needed. */
3076         vfid->nr_vports++;
3077         mlxsw_sp_vport->vport.vfid = vfid;
3078         old_vfid->nr_vports--;
3079         if (!old_vfid->nr_vports)
3080                 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
3081
3082         mlxsw_sp_vport->learning = 1;
3083         mlxsw_sp_vport->learning_sync = 1;
3084         mlxsw_sp_vport->uc_flood = 1;
3085         mlxsw_sp_vport->bridged = 1;
3086
3087         return 0;
3088
3089 err_port_vid_to_fid_validate:
3090         mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
3091                                      MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
3092                                      mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
3093 err_port_vid_to_fid_invalidate:
3094         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
3095 err_port_vid_learning_set:
3096         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
3097 err_port_flood_set:
3098         if (!vfid->nr_vports)
3099                 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
3100         return err;
3101 }
3102
3103 static bool
3104 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
3105                                   const struct net_device *br_dev)
3106 {
3107         struct mlxsw_sp_port *mlxsw_sp_vport;
3108
3109         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
3110                             vport.list) {
3111                 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
3112                         return false;
3113         }
3114
3115         return true;
3116 }
3117
3118 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
3119                                           unsigned long event, void *ptr,
3120                                           u16 vid)
3121 {
3122         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
3123         struct netdev_notifier_changeupper_info *info = ptr;
3124         struct mlxsw_sp_port *mlxsw_sp_vport;
3125         struct net_device *upper_dev;
3126         int err;
3127
3128         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
3129
3130         switch (event) {
3131         case NETDEV_PRECHANGEUPPER:
3132                 upper_dev = info->upper_dev;
3133                 if (!info->master || !info->linking)
3134                         break;
3135                 if (!netif_is_bridge_master(upper_dev))
3136                         return NOTIFY_BAD;
3137                 /* We can't have multiple VLAN interfaces configured on
3138                  * the same port and being members in the same bridge.
3139                  */
3140                 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
3141                                                        upper_dev))
3142                         return NOTIFY_BAD;
3143                 break;
3144         case NETDEV_CHANGEUPPER:
3145                 upper_dev = info->upper_dev;
3146                 if (!info->master)
3147                         break;
3148                 if (info->linking) {
3149                         if (!mlxsw_sp_vport) {
3150                                 WARN_ON(!mlxsw_sp_vport);
3151                                 return NOTIFY_BAD;
3152                         }
3153                         err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
3154                                                          upper_dev);
3155                         if (err) {
3156                                 netdev_err(dev, "Failed to join bridge\n");
3157                                 return NOTIFY_BAD;
3158                         }
3159                 } else {
3160                         /* We ignore bridge's unlinking notifications if vPort
3161                          * is gone, since we already left the bridge when the
3162                          * VLAN device was unlinked from the real device.
3163                          */
3164                         if (!mlxsw_sp_vport)
3165                                 return NOTIFY_DONE;
3166                         err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
3167                                                           upper_dev, true);
3168                         if (err) {
3169                                 netdev_err(dev, "Failed to leave bridge\n");
3170                                 return NOTIFY_BAD;
3171                         }
3172                 }
3173         }
3174
3175         return NOTIFY_DONE;
3176 }
3177
3178 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
3179                                               unsigned long event, void *ptr,
3180                                               u16 vid)
3181 {
3182         struct net_device *dev;
3183         struct list_head *iter;
3184         int ret;
3185
3186         netdev_for_each_lower_dev(lag_dev, dev, iter) {
3187                 if (mlxsw_sp_port_dev_check(dev)) {
3188                         ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
3189                                                              vid);
3190                         if (ret == NOTIFY_BAD)
3191                                 return ret;
3192                 }
3193         }
3194
3195         return NOTIFY_DONE;
3196 }
3197
3198 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
3199                                          unsigned long event, void *ptr)
3200 {
3201         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3202         u16 vid = vlan_dev_vlan_id(vlan_dev);
3203
3204         if (mlxsw_sp_port_dev_check(real_dev))
3205                 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
3206                                                       vid);
3207         else if (netif_is_lag_master(real_dev))
3208                 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
3209                                                           vid);
3210
3211         return NOTIFY_DONE;
3212 }
3213
3214 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
3215                                     unsigned long event, void *ptr)
3216 {
3217         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3218
3219         if (mlxsw_sp_port_dev_check(dev))
3220                 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
3221
3222         if (netif_is_lag_master(dev))
3223                 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
3224
3225         if (is_vlan_dev(dev))
3226                 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
3227
3228         return NOTIFY_DONE;
3229 }
3230
3231 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
3232         .notifier_call = mlxsw_sp_netdevice_event,
3233 };
3234
3235 static int __init mlxsw_sp_module_init(void)
3236 {
3237         int err;
3238
3239         register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3240         err = mlxsw_core_driver_register(&mlxsw_sp_driver);
3241         if (err)
3242                 goto err_core_driver_register;
3243         return 0;
3244
3245 err_core_driver_register:
3246         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3247         return err;
3248 }
3249
3250 static void __exit mlxsw_sp_module_exit(void)
3251 {
3252         mlxsw_core_driver_unregister(&mlxsw_sp_driver);
3253         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3254 }
3255
3256 module_init(mlxsw_sp_module_init);
3257 module_exit(mlxsw_sp_module_exit);
3258
3259 MODULE_LICENSE("Dual BSD/GPL");
3260 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
3261 MODULE_DESCRIPTION("Mellanox Spectrum driver");
3262 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);