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/switchdev.h>
  53 #include <generated/utsrelease.h>
  54
  55 #include "spectrum.h"
  56 #include "core.h"
  57 #include "reg.h"
  58 #include "port.h"
  59 #include "trap.h"
  60 #include "txheader.h"
  61
  62 static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
  63 static const char mlxsw_sp_driver_version[] = "1.0";
  64
  65 /* tx_hdr_version
  66  * Tx header version.
  67  * Must be set to 1.
  68  */
  69 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
  70
  71 /* tx_hdr_ctl
  72  * Packet control type.
  73  * 0 - Ethernet control (e.g. EMADs, LACP)
  74  * 1 - Ethernet data
  75  */
  76 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
  77
  78 /* tx_hdr_proto
  79  * Packet protocol type. Must be set to 1 (Ethernet).
  80  */
  81 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
  82
  83 /* tx_hdr_rx_is_router
  84  * Packet is sent from the router. Valid for data packets only.
  85  */
  86 MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
  87
  88 /* tx_hdr_fid_valid
  89  * Indicates if the 'fid' field is valid and should be used for
  90  * forwarding lookup. Valid for data packets only.
  91  */
  92 MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
  93
  94 /* tx_hdr_swid
  95  * Switch partition ID. Must be set to 0.
  96  */
  97 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
  98
  99 /* tx_hdr_control_tclass
 100  * Indicates if the packet should use the control TClass and not one
 101  * of the data TClasses.
 102  */
 103 MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
 104
 105 /* tx_hdr_etclass
 106  * Egress TClass to be used on the egress device on the egress port.
 107  */
 108 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
 109
 110 /* tx_hdr_port_mid
 111  * Destination local port for unicast packets.
 112  * Destination multicast ID for multicast packets.
 113  *
 114  * Control packets are directed to a specific egress port, while data
 115  * packets are transmitted through the CPU port (0) into the switch partition,
 116  * where forwarding rules are applied.
 117  */
 118 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
 119
 120 /* tx_hdr_fid
 121  * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
 122  * set, otherwise calculated based on the packet's VID using VID to FID mapping.
 123  * Valid for data packets only.
 124  */
 125 MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
 126
 127 /* tx_hdr_type
 128  * 0 - Data packets
 129  * 6 - Control packets
 130  */
 131 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
 132
 133 static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
 134                                      const struct mlxsw_tx_info *tx_info)
 135 {
 136         char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
 137
 138         memset(txhdr, 0, MLXSW_TXHDR_LEN);
 139
 140         mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
 141         mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
 142         mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
 143         mlxsw_tx_hdr_swid_set(txhdr, 0);
 144         mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
 145         mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
 146         mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
 147 }
 148
 149 static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
 150 {
 151         char spad_pl[MLXSW_REG_SPAD_LEN];
 152         int err;
 153
 154         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
 155         if (err)
 156                 return err;
 157         mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
 158         return 0;
 159 }
 160
 161 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
 162                                           bool is_up)
 163 {
 164         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 165         char paos_pl[MLXSW_REG_PAOS_LEN];
 166
 167         mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
 168                             is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
 169                             MLXSW_PORT_ADMIN_STATUS_DOWN);
 170         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
 171 }
 172
 173 static int mlxsw_sp_port_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
 174                                          bool *p_is_up)
 175 {
 176         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 177         char paos_pl[MLXSW_REG_PAOS_LEN];
 178         u8 oper_status;
 179         int err;
 180
 181         mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
 182         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
 183         if (err)
 184                 return err;
 185         oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
 186         *p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
 187         return 0;
 188 }
 189
 190 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
 191                                       unsigned char *addr)
 192 {
 193         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 194         char ppad_pl[MLXSW_REG_PPAD_LEN];
 195
 196         mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
 197         mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
 198         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
 199 }
 200
 201 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
 202 {
 203         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 204         unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
 205
 206         ether_addr_copy(addr, mlxsw_sp->base_mac);
 207         addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
 208         return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
 209 }
 210
 211 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 212                                        u16 vid, enum mlxsw_reg_spms_state state)
 213 {
 214         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 215         char *spms_pl;
 216         int err;
 217
 218         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 219         if (!spms_pl)
 220                 return -ENOMEM;
 221         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 222         mlxsw_reg_spms_vid_pack(spms_pl, vid, state);
 223         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 224         kfree(spms_pl);
 225         return err;
 226 }
 227
 228 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
 229 {
 230         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 231         char pmtu_pl[MLXSW_REG_PMTU_LEN];
 232         int max_mtu;
 233         int err;
 234
 235         mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
 236         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
 237         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 238         if (err)
 239                 return err;
 240         max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
 241
 242         if (mtu > max_mtu)
 243                 return -EINVAL;
 244
 245         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
 246         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 247 }
 248
 249 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
 250 {
 251         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 252         char pspa_pl[MLXSW_REG_PSPA_LEN];
 253
 254         mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
 255         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
 256 }
 257
 258 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
 259                                      bool enable)
 260 {
 261         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 262         char svpe_pl[MLXSW_REG_SVPE_LEN];
 263
 264         mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
 265         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
 266 }
 267
 268 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 269                                  enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
 270                                  u16 vid)
 271 {
 272         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 273         char svfa_pl[MLXSW_REG_SVFA_LEN];
 274
 275         mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
 276                             fid, vid);
 277         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 278 }
 279
 280 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 281                                           u16 vid, bool learn_enable)
 282 {
 283         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 284         char *spvmlr_pl;
 285         int err;
 286
 287         spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
 288         if (!spvmlr_pl)
 289                 return -ENOMEM;
 290         mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
 291                               learn_enable);
 292         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
 293         kfree(spvmlr_pl);
 294         return err;
 295 }
 296
 297 static int
 298 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
 299 {
 300         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 301         char sspr_pl[MLXSW_REG_SSPR_LEN];
 302
 303         mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
 304         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
 305 }
 306
 307 static int mlxsw_sp_port_module_check(struct mlxsw_sp_port *mlxsw_sp_port,
 308                                       bool *p_usable)
 309 {
 310         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 311         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 312         int err;
 313
 314         mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
 315         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 316         if (err)
 317                 return err;
 318         *p_usable = mlxsw_reg_pmlp_width_get(pmlp_pl) ? true : false;
 319         return 0;
 320 }
 321
 322 static int mlxsw_sp_port_open(struct net_device *dev)
 323 {
 324         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 325         int err;
 326
 327         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
 328         if (err)
 329                 return err;
 330         netif_start_queue(dev);
 331         return 0;
 332 }
 333
 334 static int mlxsw_sp_port_stop(struct net_device *dev)
 335 {
 336         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 337
 338         netif_stop_queue(dev);
 339         return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
 340 }
 341
 342 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
 343                                       struct net_device *dev)
 344 {
 345         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 346         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 347         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
 348         const struct mlxsw_tx_info tx_info = {
 349                 .local_port = mlxsw_sp_port->local_port,
 350                 .is_emad = false,
 351         };
 352         u64 len;
 353         int err;
 354
 355         if (mlxsw_core_skb_transmit_busy(mlxsw_sp, &tx_info))
 356                 return NETDEV_TX_BUSY;
 357
 358         if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
 359                 struct sk_buff *skb_orig = skb;
 360
 361                 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
 362                 if (!skb) {
 363                         this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 364                         dev_kfree_skb_any(skb_orig);
 365                         return NETDEV_TX_OK;
 366                 }
 367         }
 368
 369         if (eth_skb_pad(skb)) {
 370                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 371                 return NETDEV_TX_OK;
 372         }
 373
 374         mlxsw_sp_txhdr_construct(skb, &tx_info);
 375         len = skb->len;
 376         /* Due to a race we might fail here because of a full queue. In that
 377          * unlikely case we simply drop the packet.
 378          */
 379         err = mlxsw_core_skb_transmit(mlxsw_sp, skb, &tx_info);
 380
 381         if (!err) {
 382                 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
 383                 u64_stats_update_begin(&pcpu_stats->syncp);
 384                 pcpu_stats->tx_packets++;
 385                 pcpu_stats->tx_bytes += len;
 386                 u64_stats_update_end(&pcpu_stats->syncp);
 387         } else {
 388                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 389                 dev_kfree_skb_any(skb);
 390         }
 391         return NETDEV_TX_OK;
 392 }
 393
 394 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
 395 {
 396 }
 397
 398 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
 399 {
 400         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 401         struct sockaddr *addr = p;
 402         int err;
 403
 404         if (!is_valid_ether_addr(addr->sa_data))
 405                 return -EADDRNOTAVAIL;
 406
 407         err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
 408         if (err)
 409                 return err;
 410         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 411         return 0;
 412 }
 413
 414 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
 415 {
 416         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 417         int err;
 418
 419         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
 420         if (err)
 421                 return err;
 422         dev->mtu = mtu;
 423         return 0;
 424 }
 425
 426 static struct rtnl_link_stats64 *
 427 mlxsw_sp_port_get_stats64(struct net_device *dev,
 428                           struct rtnl_link_stats64 *stats)
 429 {
 430         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 431         struct mlxsw_sp_port_pcpu_stats *p;
 432         u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
 433         u32 tx_dropped = 0;
 434         unsigned int start;
 435         int i;
 436
 437         for_each_possible_cpu(i) {
 438                 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
 439                 do {
 440                         start = u64_stats_fetch_begin_irq(&p->syncp);
 441                         rx_packets      = p->rx_packets;
 442                         rx_bytes        = p->rx_bytes;
 443                         tx_packets      = p->tx_packets;
 444                         tx_bytes        = p->tx_bytes;
 445                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 446
 447                 stats->rx_packets       += rx_packets;
 448                 stats->rx_bytes         += rx_bytes;
 449                 stats->tx_packets       += tx_packets;
 450                 stats->tx_bytes         += tx_bytes;
 451                 /* tx_dropped is u32, updated without syncp protection. */
 452                 tx_dropped      += p->tx_dropped;
 453         }
 454         stats->tx_dropped       = tx_dropped;
 455         return stats;
 456 }
 457
 458 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
 459                            u16 vid_end, bool is_member, bool untagged)
 460 {
 461         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 462         char *spvm_pl;
 463         int err;
 464
 465         spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
 466         if (!spvm_pl)
 467                 return -ENOMEM;
 468
 469         mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
 470                             vid_end, is_member, untagged);
 471         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
 472         kfree(spvm_pl);
 473         return err;
 474 }
 475
 476 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 477 {
 478         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 479         u16 vid, last_visited_vid;
 480         int err;
 481
 482         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 483                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
 484                                                    vid);
 485                 if (err) {
 486                         last_visited_vid = vid;
 487                         goto err_port_vid_to_fid_set;
 488                 }
 489         }
 490
 491         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
 492         if (err) {
 493                 last_visited_vid = VLAN_N_VID;
 494                 goto err_port_vid_to_fid_set;
 495         }
 496
 497         return 0;
 498
 499 err_port_vid_to_fid_set:
 500         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 501                 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
 502                                              vid);
 503         return err;
 504 }
 505
 506 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 507 {
 508         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 509         u16 vid;
 510         int err;
 511
 512         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
 513         if (err)
 514                 return err;
 515
 516         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 517                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
 518                                                    vid, vid);
 519                 if (err)
 520                         return err;
 521         }
 522
 523         return 0;
 524 }
 525
 526 static struct mlxsw_sp_vfid *
 527 mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
 528 {
 529         struct mlxsw_sp_vfid *vfid;
 530
 531         list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
 532                 if (vfid->vid == vid)
 533                         return vfid;
 534         }
 535
 536         return NULL;
 537 }
 538
 539 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
 540 {
 541         return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
 542                                    MLXSW_SP_VFID_PORT_MAX);
 543 }
 544
 545 static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
 546 {
 547         u16 fid = mlxsw_sp_vfid_to_fid(vfid);
 548         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 549
 550         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
 551         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 552 }
 553
 554 static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
 555 {
 556         u16 fid = mlxsw_sp_vfid_to_fid(vfid);
 557         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 558
 559         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
 560         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 561 }
 562
 563 static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
 564                                                   u16 vid)
 565 {
 566         struct device *dev = mlxsw_sp->bus_info->dev;
 567         struct mlxsw_sp_vfid *vfid;
 568         u16 n_vfid;
 569         int err;
 570
 571         n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
 572         if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
 573                 dev_err(dev, "No available vFIDs\n");
 574                 return ERR_PTR(-ERANGE);
 575         }
 576
 577         err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
 578         if (err) {
 579                 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
 580                 return ERR_PTR(err);
 581         }
 582
 583         vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
 584         if (!vfid)
 585                 goto err_allocate_vfid;
 586
 587         vfid->vfid = n_vfid;
 588         vfid->vid = vid;
 589
 590         list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
 591         set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
 592
 593         return vfid;
 594
 595 err_allocate_vfid:
 596         __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
 597         return ERR_PTR(-ENOMEM);
 598 }
 599
 600 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
 601                                   struct mlxsw_sp_vfid *vfid)
 602 {
 603         clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
 604         list_del(&vfid->list);
 605
 606         __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
 607
 608         kfree(vfid);
 609 }
 610
 611 static struct mlxsw_sp_port *
 612 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
 613                            struct mlxsw_sp_vfid *vfid)
 614 {
 615         struct mlxsw_sp_port *mlxsw_sp_vport;
 616
 617         mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
 618         if (!mlxsw_sp_vport)
 619                 return NULL;
 620
 621         /* dev will be set correctly after the VLAN device is linked
 622          * with the real device. In case of bridge SELF invocation, dev
 623          * will remain as is.
 624          */
 625         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
 626         mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 627         mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
 628         mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
 629         mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
 630         mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
 631         mlxsw_sp_vport->vport.vfid = vfid;
 632         mlxsw_sp_vport->vport.vid = vfid->vid;
 633
 634         list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
 635
 636         return mlxsw_sp_vport;
 637 }
 638
 639 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
 640 {
 641         list_del(&mlxsw_sp_vport->vport.list);
 642         kfree(mlxsw_sp_vport);
 643 }
 644
 645 int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
 646                           u16 vid)
 647 {
 648         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 649         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 650         struct mlxsw_sp_port *mlxsw_sp_vport;
 651         struct mlxsw_sp_vfid *vfid;
 652         int err;
 653
 654         /* VLAN 0 is added to HW filter when device goes up, but it is
 655          * reserved in our case, so simply return.
 656          */
 657         if (!vid)
 658                 return 0;
 659
 660         if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
 661                 netdev_warn(dev, "VID=%d already configured\n", vid);
 662                 return 0;
 663         }
 664
 665         vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
 666         if (!vfid) {
 667                 vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
 668                 if (IS_ERR(vfid)) {
 669                         netdev_err(dev, "Failed to create vFID for VID=%d\n",
 670                                    vid);
 671                         return PTR_ERR(vfid);
 672                 }
 673         }
 674
 675         mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
 676         if (!mlxsw_sp_vport) {
 677                 netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
 678                 err = -ENOMEM;
 679                 goto err_port_vport_create;
 680         }
 681
 682         if (!vfid->nr_vports) {
 683                 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
 684                                                true, false);
 685                 if (err) {
 686                         netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
 687                                    vfid->vfid);
 688                         goto err_vport_flood_set;
 689                 }
 690         }
 691
 692         /* When adding the first VLAN interface on a bridged port we need to
 693          * transition all the active 802.1Q bridge VLANs to use explicit
 694          * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
 695          */
 696         if (list_is_singular(&mlxsw_sp_port->vports_list)) {
 697                 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
 698                 if (err) {
 699                         netdev_err(dev, "Failed to set to Virtual mode\n");
 700                         goto err_port_vp_mode_trans;
 701                 }
 702         }
 703
 704         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
 705                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
 706                                            true,
 707                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
 708                                            vid);
 709         if (err) {
 710                 netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
 711                            vid, vfid->vfid);
 712                 goto err_port_vid_to_fid_set;
 713         }
 714
 715         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
 716         if (err) {
 717                 netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
 718                 goto err_port_vid_learning_set;
 719         }
 720
 721         err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
 722         if (err) {
 723                 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
 724                            vid);
 725                 goto err_port_add_vid;
 726         }
 727
 728         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 729                                           MLXSW_REG_SPMS_STATE_FORWARDING);
 730         if (err) {
 731                 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
 732                 goto err_port_stp_state_set;
 733         }
 734
 735         vfid->nr_vports++;
 736
 737         return 0;
 738
 739 err_port_stp_state_set:
 740         mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
 741 err_port_add_vid:
 742         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 743 err_port_vid_learning_set:
 744         mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
 745                                      MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
 746                                      mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
 747 err_port_vid_to_fid_set:
 748         if (list_is_singular(&mlxsw_sp_port->vports_list))
 749                 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 750 err_port_vp_mode_trans:
 751         if (!vfid->nr_vports)
 752                 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
 753                                          false);
 754 err_vport_flood_set:
 755         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 756 err_port_vport_create:
 757         if (!vfid->nr_vports)
 758                 mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
 759         return err;
 760 }
 761
 762 int mlxsw_sp_port_kill_vid(struct net_device *dev,
 763                            __be16 __always_unused proto, u16 vid)
 764 {
 765         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 766         struct mlxsw_sp_port *mlxsw_sp_vport;
 767         struct mlxsw_sp_vfid *vfid;
 768         int err;
 769
 770         /* VLAN 0 is removed from HW filter when device goes down, but
 771          * it is reserved in our case, so simply return.
 772          */
 773         if (!vid)
 774                 return 0;
 775
 776         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
 777         if (!mlxsw_sp_vport) {
 778                 netdev_warn(dev, "VID=%d does not exist\n", vid);
 779                 return 0;
 780         }
 781
 782         vfid = mlxsw_sp_vport->vport.vfid;
 783
 784         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
 785                                           MLXSW_REG_SPMS_STATE_DISCARDING);
 786         if (err) {
 787                 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
 788                 return err;
 789         }
 790
 791         err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
 792         if (err) {
 793                 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
 794                            vid);
 795                 return err;
 796         }
 797
 798         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 799         if (err) {
 800                 netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
 801                 return err;
 802         }
 803
 804         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
 805                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
 806                                            false,
 807                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
 808                                            vid);
 809         if (err) {
 810                 netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
 811                            vid, vfid->vfid);
 812                 return err;
 813         }
 814
 815         /* When removing the last VLAN interface on a bridged port we need to
 816          * transition all active 802.1Q bridge VLANs to use VID to FID
 817          * mappings and set port's mode to VLAN mode.
 818          */
 819         if (list_is_singular(&mlxsw_sp_port->vports_list)) {
 820                 err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 821                 if (err) {
 822                         netdev_err(dev, "Failed to set to VLAN mode\n");
 823                         return err;
 824                 }
 825         }
 826
 827         vfid->nr_vports--;
 828         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 829
 830         /* Destroy the vFID if no vPorts are assigned to it anymore. */
 831         if (!vfid->nr_vports)
 832                 mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
 833
 834         return 0;
 835 }
 836
 837 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
 838         .ndo_open               = mlxsw_sp_port_open,
 839         .ndo_stop               = mlxsw_sp_port_stop,
 840         .ndo_start_xmit         = mlxsw_sp_port_xmit,
 841         .ndo_set_rx_mode        = mlxsw_sp_set_rx_mode,
 842         .ndo_set_mac_address    = mlxsw_sp_port_set_mac_address,
 843         .ndo_change_mtu         = mlxsw_sp_port_change_mtu,
 844         .ndo_get_stats64        = mlxsw_sp_port_get_stats64,
 845         .ndo_vlan_rx_add_vid    = mlxsw_sp_port_add_vid,
 846         .ndo_vlan_rx_kill_vid   = mlxsw_sp_port_kill_vid,
 847         .ndo_fdb_add            = switchdev_port_fdb_add,
 848         .ndo_fdb_del            = switchdev_port_fdb_del,
 849         .ndo_fdb_dump           = switchdev_port_fdb_dump,
 850         .ndo_bridge_setlink     = switchdev_port_bridge_setlink,
 851         .ndo_bridge_getlink     = switchdev_port_bridge_getlink,
 852         .ndo_bridge_dellink     = switchdev_port_bridge_dellink,
 853 };
 854
 855 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
 856                                       struct ethtool_drvinfo *drvinfo)
 857 {
 858         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 859         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 860
 861         strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
 862         strlcpy(drvinfo->version, mlxsw_sp_driver_version,
 863                 sizeof(drvinfo->version));
 864         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 865                  "%d.%d.%d",
 866                  mlxsw_sp->bus_info->fw_rev.major,
 867                  mlxsw_sp->bus_info->fw_rev.minor,
 868                  mlxsw_sp->bus_info->fw_rev.subminor);
 869         strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
 870                 sizeof(drvinfo->bus_info));
 871 }
 872
 873 struct mlxsw_sp_port_hw_stats {
 874         char str[ETH_GSTRING_LEN];
 875         u64 (*getter)(char *payload);
 876 };
 877
 878 static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
 879         {
 880                 .str = "a_frames_transmitted_ok",
 881                 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
 882         },
 883         {
 884                 .str = "a_frames_received_ok",
 885                 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
 886         },
 887         {
 888                 .str = "a_frame_check_sequence_errors",
 889                 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
 890         },
 891         {
 892                 .str = "a_alignment_errors",
 893                 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
 894         },
 895         {
 896                 .str = "a_octets_transmitted_ok",
 897                 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
 898         },
 899         {
 900                 .str = "a_octets_received_ok",
 901                 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
 902         },
 903         {
 904                 .str = "a_multicast_frames_xmitted_ok",
 905                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
 906         },
 907         {
 908                 .str = "a_broadcast_frames_xmitted_ok",
 909                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
 910         },
 911         {
 912                 .str = "a_multicast_frames_received_ok",
 913                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
 914         },
 915         {
 916                 .str = "a_broadcast_frames_received_ok",
 917                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
 918         },
 919         {
 920                 .str = "a_in_range_length_errors",
 921                 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
 922         },
 923         {
 924                 .str = "a_out_of_range_length_field",
 925                 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
 926         },
 927         {
 928                 .str = "a_frame_too_long_errors",
 929                 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
 930         },
 931         {
 932                 .str = "a_symbol_error_during_carrier",
 933                 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
 934         },
 935         {
 936                 .str = "a_mac_control_frames_transmitted",
 937                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
 938         },
 939         {
 940                 .str = "a_mac_control_frames_received",
 941                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
 942         },
 943         {
 944                 .str = "a_unsupported_opcodes_received",
 945                 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
 946         },
 947         {
 948                 .str = "a_pause_mac_ctrl_frames_received",
 949                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
 950         },
 951         {
 952                 .str = "a_pause_mac_ctrl_frames_xmitted",
 953                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
 954         },
 955 };
 956
 957 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
 958
 959 static void mlxsw_sp_port_get_strings(struct net_device *dev,
 960                                       u32 stringset, u8 *data)
 961 {
 962         u8 *p = data;
 963         int i;
 964
 965         switch (stringset) {
 966         case ETH_SS_STATS:
 967                 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
 968                         memcpy(p, mlxsw_sp_port_hw_stats[i].str,
 969                                ETH_GSTRING_LEN);
 970                         p += ETH_GSTRING_LEN;
 971                 }
 972                 break;
 973         }
 974 }
 975
 976 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
 977                                      enum ethtool_phys_id_state state)
 978 {
 979         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 980         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 981         char mlcr_pl[MLXSW_REG_MLCR_LEN];
 982         bool active;
 983
 984         switch (state) {
 985         case ETHTOOL_ID_ACTIVE:
 986                 active = true;
 987                 break;
 988         case ETHTOOL_ID_INACTIVE:
 989                 active = false;
 990                 break;
 991         default:
 992                 return -EOPNOTSUPP;
 993         }
 994
 995         mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
 996         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
 997 }
 998
 999 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1000                                     struct ethtool_stats *stats, u64 *data)
1001 {
1002         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1003         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1004         char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1005         int i;
1006         int err;
1007
1008         mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port);
1009         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1010         for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
1011                 data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
1012 }
1013
1014 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1015 {
1016         switch (sset) {
1017         case ETH_SS_STATS:
1018                 return MLXSW_SP_PORT_HW_STATS_LEN;
1019         default:
1020                 return -EOPNOTSUPP;
1021         }
1022 }
1023
1024 struct mlxsw_sp_port_link_mode {
1025         u32 mask;
1026         u32 supported;
1027         u32 advertised;
1028         u32 speed;
1029 };
1030
1031 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1032         {
1033                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1034                 .supported      = SUPPORTED_100baseT_Full,
1035                 .advertised     = ADVERTISED_100baseT_Full,
1036                 .speed          = 100,
1037         },
1038         {
1039                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1040                 .speed          = 100,
1041         },
1042         {
1043                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1044                                   MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1045                 .supported      = SUPPORTED_1000baseKX_Full,
1046                 .advertised     = ADVERTISED_1000baseKX_Full,
1047                 .speed          = 1000,
1048         },
1049         {
1050                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1051                 .supported      = SUPPORTED_10000baseT_Full,
1052                 .advertised     = ADVERTISED_10000baseT_Full,
1053                 .speed          = 10000,
1054         },
1055         {
1056                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1057                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1058                 .supported      = SUPPORTED_10000baseKX4_Full,
1059                 .advertised     = ADVERTISED_10000baseKX4_Full,
1060                 .speed          = 10000,
1061         },
1062         {
1063                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1064                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1065                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1066                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1067                 .supported      = SUPPORTED_10000baseKR_Full,
1068                 .advertised     = ADVERTISED_10000baseKR_Full,
1069                 .speed          = 10000,
1070         },
1071         {
1072                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1073                 .supported      = SUPPORTED_20000baseKR2_Full,
1074                 .advertised     = ADVERTISED_20000baseKR2_Full,
1075                 .speed          = 20000,
1076         },
1077         {
1078                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1079                 .supported      = SUPPORTED_40000baseCR4_Full,
1080                 .advertised     = ADVERTISED_40000baseCR4_Full,
1081                 .speed          = 40000,
1082         },
1083         {
1084                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1085                 .supported      = SUPPORTED_40000baseKR4_Full,
1086                 .advertised     = ADVERTISED_40000baseKR4_Full,
1087                 .speed          = 40000,
1088         },
1089         {
1090                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1091                 .supported      = SUPPORTED_40000baseSR4_Full,
1092                 .advertised     = ADVERTISED_40000baseSR4_Full,
1093                 .speed          = 40000,
1094         },
1095         {
1096                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1097                 .supported      = SUPPORTED_40000baseLR4_Full,
1098                 .advertised     = ADVERTISED_40000baseLR4_Full,
1099                 .speed          = 40000,
1100         },
1101         {
1102                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1103                                   MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1104                                   MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1105                 .speed          = 25000,
1106         },
1107         {
1108                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1109                                   MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1110                                   MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1111                 .speed          = 50000,
1112         },
1113         {
1114                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1115                 .supported      = SUPPORTED_56000baseKR4_Full,
1116                 .advertised     = ADVERTISED_56000baseKR4_Full,
1117                 .speed          = 56000,
1118         },
1119         {
1120                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1121                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1122                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1123                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1124                 .speed          = 100000,
1125         },
1126 };
1127
1128 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1129
1130 static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1131 {
1132         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1133                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1134                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1135                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1136                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1137                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1138                 return SUPPORTED_FIBRE;
1139
1140         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1141                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1142                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1143                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1144                               MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1145                 return SUPPORTED_Backplane;
1146         return 0;
1147 }
1148
1149 static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1150 {
1151         u32 modes = 0;
1152         int i;
1153
1154         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1155                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1156                         modes |= mlxsw_sp_port_link_mode[i].supported;
1157         }
1158         return modes;
1159 }
1160
1161 static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1162 {
1163         u32 modes = 0;
1164         int i;
1165
1166         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1167                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1168                         modes |= mlxsw_sp_port_link_mode[i].advertised;
1169         }
1170         return modes;
1171 }
1172
1173 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1174                                             struct ethtool_cmd *cmd)
1175 {
1176         u32 speed = SPEED_UNKNOWN;
1177         u8 duplex = DUPLEX_UNKNOWN;
1178         int i;
1179
1180         if (!carrier_ok)
1181                 goto out;
1182
1183         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1184                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1185                         speed = mlxsw_sp_port_link_mode[i].speed;
1186                         duplex = DUPLEX_FULL;
1187                         break;
1188                 }
1189         }
1190 out:
1191         ethtool_cmd_speed_set(cmd, speed);
1192         cmd->duplex = duplex;
1193 }
1194
1195 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1196 {
1197         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1198                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1199                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1200                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1201                 return PORT_FIBRE;
1202
1203         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1204                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1205                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1206                 return PORT_DA;
1207
1208         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1209                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1210                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1211                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1212                 return PORT_NONE;
1213
1214         return PORT_OTHER;
1215 }
1216
1217 static int mlxsw_sp_port_get_settings(struct net_device *dev,
1218                                       struct ethtool_cmd *cmd)
1219 {
1220         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1221         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1222         char ptys_pl[MLXSW_REG_PTYS_LEN];
1223         u32 eth_proto_cap;
1224         u32 eth_proto_admin;
1225         u32 eth_proto_oper;
1226         int err;
1227
1228         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1229         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1230         if (err) {
1231                 netdev_err(dev, "Failed to get proto");
1232                 return err;
1233         }
1234         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1235                               &eth_proto_admin, &eth_proto_oper);
1236
1237         cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1238                          mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1239                          SUPPORTED_Pause | SUPPORTED_Asym_Pause;
1240         cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1241         mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1242                                         eth_proto_oper, cmd);
1243
1244         eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1245         cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1246         cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1247
1248         cmd->transceiver = XCVR_INTERNAL;
1249         return 0;
1250 }
1251
1252 static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1253 {
1254         u32 ptys_proto = 0;
1255         int i;
1256
1257         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1258                 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1259                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1260         }
1261         return ptys_proto;
1262 }
1263
1264 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1265 {
1266         u32 ptys_proto = 0;
1267         int i;
1268
1269         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1270                 if (speed == mlxsw_sp_port_link_mode[i].speed)
1271                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1272         }
1273         return ptys_proto;
1274 }
1275
1276 static int mlxsw_sp_port_set_settings(struct net_device *dev,
1277                                       struct ethtool_cmd *cmd)
1278 {
1279         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1280         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1281         char ptys_pl[MLXSW_REG_PTYS_LEN];
1282         u32 speed;
1283         u32 eth_proto_new;
1284         u32 eth_proto_cap;
1285         u32 eth_proto_admin;
1286         bool is_up;
1287         int err;
1288
1289         speed = ethtool_cmd_speed(cmd);
1290
1291         eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1292                 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1293                 mlxsw_sp_to_ptys_speed(speed);
1294
1295         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1296         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1297         if (err) {
1298                 netdev_err(dev, "Failed to get proto");
1299                 return err;
1300         }
1301         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1302
1303         eth_proto_new = eth_proto_new & eth_proto_cap;
1304         if (!eth_proto_new) {
1305                 netdev_err(dev, "Not supported proto admin requested");
1306                 return -EINVAL;
1307         }
1308         if (eth_proto_new == eth_proto_admin)
1309                 return 0;
1310
1311         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1312         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1313         if (err) {
1314                 netdev_err(dev, "Failed to set proto admin");
1315                 return err;
1316         }
1317
1318         err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
1319         if (err) {
1320                 netdev_err(dev, "Failed to get oper status");
1321                 return err;
1322         }
1323         if (!is_up)
1324                 return 0;
1325
1326         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1327         if (err) {
1328                 netdev_err(dev, "Failed to set admin status");
1329                 return err;
1330         }
1331
1332         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1333         if (err) {
1334                 netdev_err(dev, "Failed to set admin status");
1335                 return err;
1336         }
1337
1338         return 0;
1339 }
1340
1341 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1342         .get_drvinfo            = mlxsw_sp_port_get_drvinfo,
1343         .get_link               = ethtool_op_get_link,
1344         .get_strings            = mlxsw_sp_port_get_strings,
1345         .set_phys_id            = mlxsw_sp_port_set_phys_id,
1346         .get_ethtool_stats      = mlxsw_sp_port_get_stats,
1347         .get_sset_count         = mlxsw_sp_port_get_sset_count,
1348         .get_settings           = mlxsw_sp_port_get_settings,
1349         .set_settings           = mlxsw_sp_port_set_settings,
1350 };
1351
1352 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1353 {
1354         struct mlxsw_sp_port *mlxsw_sp_port;
1355         struct net_device *dev;
1356         bool usable;
1357         size_t bytes;
1358         int err;
1359
1360         dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
1361         if (!dev)
1362                 return -ENOMEM;
1363         mlxsw_sp_port = netdev_priv(dev);
1364         mlxsw_sp_port->dev = dev;
1365         mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
1366         mlxsw_sp_port->local_port = local_port;
1367         bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
1368         mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
1369         if (!mlxsw_sp_port->active_vlans) {
1370                 err = -ENOMEM;
1371                 goto err_port_active_vlans_alloc;
1372         }
1373         INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
1374
1375         mlxsw_sp_port->pcpu_stats =
1376                 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1377         if (!mlxsw_sp_port->pcpu_stats) {
1378                 err = -ENOMEM;
1379                 goto err_alloc_stats;
1380         }
1381
1382         dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1383         dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1384
1385         err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1386         if (err) {
1387                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1388                         mlxsw_sp_port->local_port);
1389                 goto err_dev_addr_init;
1390         }
1391
1392         netif_carrier_off(dev);
1393
1394         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1395                          NETIF_F_HW_VLAN_CTAG_FILTER;
1396
1397         /* Each packet needs to have a Tx header (metadata) on top all other
1398          * headers.
1399          */
1400         dev->hard_header_len += MLXSW_TXHDR_LEN;
1401
1402         err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
1403         if (err) {
1404                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to check module\n",
1405                         mlxsw_sp_port->local_port);
1406                 goto err_port_module_check;
1407         }
1408
1409         if (!usable) {
1410                 dev_dbg(mlxsw_sp->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
1411                         mlxsw_sp_port->local_port);
1412                 goto port_not_usable;
1413         }
1414
1415         err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1416         if (err) {
1417                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1418                         mlxsw_sp_port->local_port);
1419                 goto err_port_system_port_mapping_set;
1420         }
1421
1422         err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1423         if (err) {
1424                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1425                         mlxsw_sp_port->local_port);
1426                 goto err_port_swid_set;
1427         }
1428
1429         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1430         if (err) {
1431                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1432                         mlxsw_sp_port->local_port);
1433                 goto err_port_mtu_set;
1434         }
1435
1436         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1437         if (err)
1438                 goto err_port_admin_status_set;
1439
1440         err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1441         if (err) {
1442                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1443                         mlxsw_sp_port->local_port);
1444                 goto err_port_buffers_init;
1445         }
1446
1447         mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1448         err = register_netdev(dev);
1449         if (err) {
1450                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1451                         mlxsw_sp_port->local_port);
1452                 goto err_register_netdev;
1453         }
1454
1455         err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1456         if (err)
1457                 goto err_port_vlan_init;
1458
1459         mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1460         return 0;
1461
1462 err_port_vlan_init:
1463         unregister_netdev(dev);
1464 err_register_netdev:
1465 err_port_buffers_init:
1466 err_port_admin_status_set:
1467 err_port_mtu_set:
1468 err_port_swid_set:
1469 err_port_system_port_mapping_set:
1470 port_not_usable:
1471 err_port_module_check:
1472 err_dev_addr_init:
1473         free_percpu(mlxsw_sp_port->pcpu_stats);
1474 err_alloc_stats:
1475         kfree(mlxsw_sp_port->active_vlans);
1476 err_port_active_vlans_alloc:
1477         free_netdev(dev);
1478         return err;
1479 }
1480
1481 static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1482 {
1483         struct net_device *dev = mlxsw_sp_port->dev;
1484         struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1485
1486         list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1487                                  &mlxsw_sp_port->vports_list, vport.list) {
1488                 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1489
1490                 /* vPorts created for VLAN devices should already be gone
1491                  * by now, since we unregistered the port netdev.
1492                  */
1493                 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1494                 mlxsw_sp_port_kill_vid(dev, 0, vid);
1495         }
1496 }
1497
1498 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1499 {
1500         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1501
1502         if (!mlxsw_sp_port)
1503                 return;
1504         unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1505         mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1506         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1507         free_percpu(mlxsw_sp_port->pcpu_stats);
1508         kfree(mlxsw_sp_port->active_vlans);
1509         free_netdev(mlxsw_sp_port->dev);
1510 }
1511
1512 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1513 {
1514         int i;
1515
1516         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1517                 mlxsw_sp_port_remove(mlxsw_sp, i);
1518         kfree(mlxsw_sp->ports);
1519 }
1520
1521 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1522 {
1523         size_t alloc_size;
1524         int i;
1525         int err;
1526
1527         alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1528         mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1529         if (!mlxsw_sp->ports)
1530                 return -ENOMEM;
1531
1532         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1533                 err = mlxsw_sp_port_create(mlxsw_sp, i);
1534                 if (err)
1535                         goto err_port_create;
1536         }
1537         return 0;
1538
1539 err_port_create:
1540         for (i--; i >= 1; i--)
1541                 mlxsw_sp_port_remove(mlxsw_sp, i);
1542         kfree(mlxsw_sp->ports);
1543         return err;
1544 }
1545
1546 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1547                                      char *pude_pl, void *priv)
1548 {
1549         struct mlxsw_sp *mlxsw_sp = priv;
1550         struct mlxsw_sp_port *mlxsw_sp_port;
1551         enum mlxsw_reg_pude_oper_status status;
1552         u8 local_port;
1553
1554         local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1555         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1556         if (!mlxsw_sp_port) {
1557                 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1558                          local_port);
1559                 return;
1560         }
1561
1562         status = mlxsw_reg_pude_oper_status_get(pude_pl);
1563         if (status == MLXSW_PORT_OPER_STATUS_UP) {
1564                 netdev_info(mlxsw_sp_port->dev, "link up\n");
1565                 netif_carrier_on(mlxsw_sp_port->dev);
1566         } else {
1567                 netdev_info(mlxsw_sp_port->dev, "link down\n");
1568                 netif_carrier_off(mlxsw_sp_port->dev);
1569         }
1570 }
1571
1572 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1573         .func = mlxsw_sp_pude_event_func,
1574         .trap_id = MLXSW_TRAP_ID_PUDE,
1575 };
1576
1577 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1578                                    enum mlxsw_event_trap_id trap_id)
1579 {
1580         struct mlxsw_event_listener *el;
1581         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1582         int err;
1583
1584         switch (trap_id) {
1585         case MLXSW_TRAP_ID_PUDE:
1586                 el = &mlxsw_sp_pude_event;
1587                 break;
1588         }
1589         err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1590         if (err)
1591                 return err;
1592
1593         mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1594         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1595         if (err)
1596                 goto err_event_trap_set;
1597
1598         return 0;
1599
1600 err_event_trap_set:
1601         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1602         return err;
1603 }
1604
1605 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1606                                       enum mlxsw_event_trap_id trap_id)
1607 {
1608         struct mlxsw_event_listener *el;
1609
1610         switch (trap_id) {
1611         case MLXSW_TRAP_ID_PUDE:
1612                 el = &mlxsw_sp_pude_event;
1613                 break;
1614         }
1615         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1616 }
1617
1618 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1619                                       void *priv)
1620 {
1621         struct mlxsw_sp *mlxsw_sp = priv;
1622         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1623         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1624
1625         if (unlikely(!mlxsw_sp_port)) {
1626                 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1627                                      local_port);
1628                 return;
1629         }
1630
1631         skb->dev = mlxsw_sp_port->dev;
1632
1633         pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1634         u64_stats_update_begin(&pcpu_stats->syncp);
1635         pcpu_stats->rx_packets++;
1636         pcpu_stats->rx_bytes += skb->len;
1637         u64_stats_update_end(&pcpu_stats->syncp);
1638
1639         skb->protocol = eth_type_trans(skb, skb->dev);
1640         netif_receive_skb(skb);
1641 }
1642
1643 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1644         {
1645                 .func = mlxsw_sp_rx_listener_func,
1646                 .local_port = MLXSW_PORT_DONT_CARE,
1647                 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1648         },
1649         /* Traps for specific L2 packet types, not trapped as FDB MC */
1650         {
1651                 .func = mlxsw_sp_rx_listener_func,
1652                 .local_port = MLXSW_PORT_DONT_CARE,
1653                 .trap_id = MLXSW_TRAP_ID_STP,
1654         },
1655         {
1656                 .func = mlxsw_sp_rx_listener_func,
1657                 .local_port = MLXSW_PORT_DONT_CARE,
1658                 .trap_id = MLXSW_TRAP_ID_LACP,
1659         },
1660         {
1661                 .func = mlxsw_sp_rx_listener_func,
1662                 .local_port = MLXSW_PORT_DONT_CARE,
1663                 .trap_id = MLXSW_TRAP_ID_EAPOL,
1664         },
1665         {
1666                 .func = mlxsw_sp_rx_listener_func,
1667                 .local_port = MLXSW_PORT_DONT_CARE,
1668                 .trap_id = MLXSW_TRAP_ID_LLDP,
1669         },
1670         {
1671                 .func = mlxsw_sp_rx_listener_func,
1672                 .local_port = MLXSW_PORT_DONT_CARE,
1673                 .trap_id = MLXSW_TRAP_ID_MMRP,
1674         },
1675         {
1676                 .func = mlxsw_sp_rx_listener_func,
1677                 .local_port = MLXSW_PORT_DONT_CARE,
1678                 .trap_id = MLXSW_TRAP_ID_MVRP,
1679         },
1680         {
1681                 .func = mlxsw_sp_rx_listener_func,
1682                 .local_port = MLXSW_PORT_DONT_CARE,
1683                 .trap_id = MLXSW_TRAP_ID_RPVST,
1684         },
1685         {
1686                 .func = mlxsw_sp_rx_listener_func,
1687                 .local_port = MLXSW_PORT_DONT_CARE,
1688                 .trap_id = MLXSW_TRAP_ID_DHCP,
1689         },
1690         {
1691                 .func = mlxsw_sp_rx_listener_func,
1692                 .local_port = MLXSW_PORT_DONT_CARE,
1693                 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1694         },
1695         {
1696                 .func = mlxsw_sp_rx_listener_func,
1697                 .local_port = MLXSW_PORT_DONT_CARE,
1698                 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1699         },
1700         {
1701                 .func = mlxsw_sp_rx_listener_func,
1702                 .local_port = MLXSW_PORT_DONT_CARE,
1703                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1704         },
1705         {
1706                 .func = mlxsw_sp_rx_listener_func,
1707                 .local_port = MLXSW_PORT_DONT_CARE,
1708                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1709         },
1710         {
1711                 .func = mlxsw_sp_rx_listener_func,
1712                 .local_port = MLXSW_PORT_DONT_CARE,
1713                 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1714         },
1715 };
1716
1717 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1718 {
1719         char htgt_pl[MLXSW_REG_HTGT_LEN];
1720         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1721         int i;
1722         int err;
1723
1724         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1725         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1726         if (err)
1727                 return err;
1728
1729         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1730         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1731         if (err)
1732                 return err;
1733
1734         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1735                 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1736                                                       &mlxsw_sp_rx_listener[i],
1737                                                       mlxsw_sp);
1738                 if (err)
1739                         goto err_rx_listener_register;
1740
1741                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1742                                     mlxsw_sp_rx_listener[i].trap_id);
1743                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1744                 if (err)
1745                         goto err_rx_trap_set;
1746         }
1747         return 0;
1748
1749 err_rx_trap_set:
1750         mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1751                                           &mlxsw_sp_rx_listener[i],
1752                                           mlxsw_sp);
1753 err_rx_listener_register:
1754         for (i--; i >= 0; i--) {
1755                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1756                                     mlxsw_sp_rx_listener[i].trap_id);
1757                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1758
1759                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1760                                                   &mlxsw_sp_rx_listener[i],
1761                                                   mlxsw_sp);
1762         }
1763         return err;
1764 }
1765
1766 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
1767 {
1768         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1769         int i;
1770
1771         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1772                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1773                                     mlxsw_sp_rx_listener[i].trap_id);
1774                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1775
1776                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1777                                                   &mlxsw_sp_rx_listener[i],
1778                                                   mlxsw_sp);
1779         }
1780 }
1781
1782 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
1783                                  enum mlxsw_reg_sfgc_type type,
1784                                  enum mlxsw_reg_sfgc_bridge_type bridge_type)
1785 {
1786         enum mlxsw_flood_table_type table_type;
1787         enum mlxsw_sp_flood_table flood_table;
1788         char sfgc_pl[MLXSW_REG_SFGC_LEN];
1789
1790         if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
1791                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
1792         else
1793                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
1794
1795         if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
1796                 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
1797         else
1798                 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
1799
1800         mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
1801                             flood_table);
1802         return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
1803 }
1804
1805 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
1806 {
1807         int type, err;
1808
1809         for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
1810                 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
1811                         continue;
1812
1813                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1814                                             MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
1815                 if (err)
1816                         return err;
1817
1818                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1819                                             MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
1820                 if (err)
1821                         return err;
1822         }
1823
1824         return 0;
1825 }
1826
1827 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
1828 {
1829         char slcr_pl[MLXSW_REG_SLCR_LEN];
1830
1831         mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
1832                                      MLXSW_REG_SLCR_LAG_HASH_DMAC |
1833                                      MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
1834                                      MLXSW_REG_SLCR_LAG_HASH_VLANID |
1835                                      MLXSW_REG_SLCR_LAG_HASH_SIP |
1836                                      MLXSW_REG_SLCR_LAG_HASH_DIP |
1837                                      MLXSW_REG_SLCR_LAG_HASH_SPORT |
1838                                      MLXSW_REG_SLCR_LAG_HASH_DPORT |
1839                                      MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
1840         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
1841 }
1842
1843 static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
1844                          const struct mlxsw_bus_info *mlxsw_bus_info)
1845 {
1846         struct mlxsw_sp *mlxsw_sp = priv;
1847         int err;
1848
1849         mlxsw_sp->core = mlxsw_core;
1850         mlxsw_sp->bus_info = mlxsw_bus_info;
1851         INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
1852         INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
1853
1854         err = mlxsw_sp_base_mac_get(mlxsw_sp);
1855         if (err) {
1856                 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
1857                 return err;
1858         }
1859
1860         err = mlxsw_sp_ports_create(mlxsw_sp);
1861         if (err) {
1862                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
1863                 return err;
1864         }
1865
1866         err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1867         if (err) {
1868                 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
1869                 goto err_event_register;
1870         }
1871
1872         err = mlxsw_sp_traps_init(mlxsw_sp);
1873         if (err) {
1874                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
1875                 goto err_rx_listener_register;
1876         }
1877
1878         err = mlxsw_sp_flood_init(mlxsw_sp);
1879         if (err) {
1880                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
1881                 goto err_flood_init;
1882         }
1883
1884         err = mlxsw_sp_buffers_init(mlxsw_sp);
1885         if (err) {
1886                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
1887                 goto err_buffers_init;
1888         }
1889
1890         err = mlxsw_sp_lag_init(mlxsw_sp);
1891         if (err) {
1892                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
1893                 goto err_lag_init;
1894         }
1895
1896         err = mlxsw_sp_switchdev_init(mlxsw_sp);
1897         if (err) {
1898                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
1899                 goto err_switchdev_init;
1900         }
1901
1902         return 0;
1903
1904 err_switchdev_init:
1905 err_lag_init:
1906 err_buffers_init:
1907 err_flood_init:
1908         mlxsw_sp_traps_fini(mlxsw_sp);
1909 err_rx_listener_register:
1910         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1911 err_event_register:
1912         mlxsw_sp_ports_remove(mlxsw_sp);
1913         return err;
1914 }
1915
1916 static void mlxsw_sp_fini(void *priv)
1917 {
1918         struct mlxsw_sp *mlxsw_sp = priv;
1919
1920         mlxsw_sp_switchdev_fini(mlxsw_sp);
1921         mlxsw_sp_traps_fini(mlxsw_sp);
1922         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1923         mlxsw_sp_ports_remove(mlxsw_sp);
1924 }
1925
1926 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
1927         .used_max_vepa_channels         = 1,
1928         .max_vepa_channels              = 0,
1929         .used_max_lag                   = 1,
1930         .max_lag                        = MLXSW_SP_LAG_MAX,
1931         .used_max_port_per_lag          = 1,
1932         .max_port_per_lag               = MLXSW_SP_PORT_PER_LAG_MAX,
1933         .used_max_mid                   = 1,
1934         .max_mid                        = 7000,
1935         .used_max_pgt                   = 1,
1936         .max_pgt                        = 0,
1937         .used_max_system_port           = 1,
1938         .max_system_port                = 64,
1939         .used_max_vlan_groups           = 1,
1940         .max_vlan_groups                = 127,
1941         .used_max_regions               = 1,
1942         .max_regions                    = 400,
1943         .used_flood_tables              = 1,
1944         .used_flood_mode                = 1,
1945         .flood_mode                     = 3,
1946         .max_fid_offset_flood_tables    = 2,
1947         .fid_offset_flood_table_size    = VLAN_N_VID - 1,
1948         .max_fid_flood_tables           = 2,
1949         .fid_flood_table_size           = MLXSW_SP_VFID_MAX,
1950         .used_max_ib_mc                 = 1,
1951         .max_ib_mc                      = 0,
1952         .used_max_pkey                  = 1,
1953         .max_pkey                       = 0,
1954         .swid_config                    = {
1955                 {
1956                         .used_type      = 1,
1957                         .type           = MLXSW_PORT_SWID_TYPE_ETH,
1958                 }
1959         },
1960 };
1961
1962 static struct mlxsw_driver mlxsw_sp_driver = {
1963         .kind                   = MLXSW_DEVICE_KIND_SPECTRUM,
1964         .owner                  = THIS_MODULE,
1965         .priv_size              = sizeof(struct mlxsw_sp),
1966         .init                   = mlxsw_sp_init,
1967         .fini                   = mlxsw_sp_fini,
1968         .txhdr_construct        = mlxsw_sp_txhdr_construct,
1969         .txhdr_len              = MLXSW_TXHDR_LEN,
1970         .profile                = &mlxsw_sp_config_profile,
1971 };
1972
1973 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
1974 {
1975         return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
1976 }
1977
1978 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
1979 {
1980         struct net_device *dev = mlxsw_sp_port->dev;
1981         int err;
1982
1983         /* When port is not bridged untagged packets are tagged with
1984          * PVID=VID=1, thereby creating an implicit VLAN interface in
1985          * the device. Remove it and let bridge code take care of its
1986          * own VLANs.
1987          */
1988         err = mlxsw_sp_port_kill_vid(dev, 0, 1);
1989         if (err)
1990                 return err;
1991
1992         mlxsw_sp_port->learning = 1;
1993         mlxsw_sp_port->learning_sync = 1;
1994         mlxsw_sp_port->uc_flood = 1;
1995         mlxsw_sp_port->bridged = 1;
1996
1997         return 0;
1998 }
1999
2000 static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
2001 {
2002         struct net_device *dev = mlxsw_sp_port->dev;
2003
2004         mlxsw_sp_port->learning = 0;
2005         mlxsw_sp_port->learning_sync = 0;
2006         mlxsw_sp_port->uc_flood = 0;
2007         mlxsw_sp_port->bridged = 0;
2008
2009         /* Add implicit VLAN interface in the device, so that untagged
2010          * packets will be classified to the default vFID.
2011          */
2012         return mlxsw_sp_port_add_vid(dev, 0, 1);
2013 }
2014
2015 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2016                                          struct net_device *br_dev)
2017 {
2018         return !mlxsw_sp->master_bridge.dev ||
2019                mlxsw_sp->master_bridge.dev == br_dev;
2020 }
2021
2022 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2023                                        struct net_device *br_dev)
2024 {
2025         mlxsw_sp->master_bridge.dev = br_dev;
2026         mlxsw_sp->master_bridge.ref_count++;
2027 }
2028
2029 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2030                                        struct net_device *br_dev)
2031 {
2032         if (--mlxsw_sp->master_bridge.ref_count == 0)
2033                 mlxsw_sp->master_bridge.dev = NULL;
2034 }
2035
2036 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2037 {
2038         char sldr_pl[MLXSW_REG_SLDR_LEN];
2039
2040         mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2041         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2042 }
2043
2044 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2045 {
2046         char sldr_pl[MLXSW_REG_SLDR_LEN];
2047
2048         mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2049         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2050 }
2051
2052 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2053                                      u16 lag_id, u8 port_index)
2054 {
2055         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2056         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2057
2058         mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2059                                       lag_id, port_index);
2060         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2061 }
2062
2063 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2064                                         u16 lag_id)
2065 {
2066         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2067         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2068
2069         mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2070                                          lag_id);
2071         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2072 }
2073
2074 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2075                                         u16 lag_id)
2076 {
2077         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2078         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2079
2080         mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2081                                         lag_id);
2082         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2083 }
2084
2085 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2086                                          u16 lag_id)
2087 {
2088         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2089         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2090
2091         mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2092                                          lag_id);
2093         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2094 }
2095
2096 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2097                                   struct net_device *lag_dev,
2098                                   u16 *p_lag_id)
2099 {
2100         struct mlxsw_sp_upper *lag;
2101         int free_lag_id = -1;
2102         int i;
2103
2104         for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2105                 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2106                 if (lag->ref_count) {
2107                         if (lag->dev == lag_dev) {
2108                                 *p_lag_id = i;
2109                                 return 0;
2110                         }
2111                 } else if (free_lag_id < 0) {
2112                         free_lag_id = i;
2113                 }
2114         }
2115         if (free_lag_id < 0)
2116                 return -EBUSY;
2117         *p_lag_id = free_lag_id;
2118         return 0;
2119 }
2120
2121 static bool
2122 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2123                           struct net_device *lag_dev,
2124                           struct netdev_lag_upper_info *lag_upper_info)
2125 {
2126         u16 lag_id;
2127
2128         if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2129                 return false;
2130         if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2131                 return false;
2132         return true;
2133 }
2134
2135 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2136                                        u16 lag_id, u8 *p_port_index)
2137 {
2138         int i;
2139
2140         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2141                 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2142                         *p_port_index = i;
2143                         return 0;
2144                 }
2145         }
2146         return -EBUSY;
2147 }
2148
2149 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2150                                   struct net_device *lag_dev)
2151 {
2152         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2153         struct mlxsw_sp_upper *lag;
2154         u16 lag_id;
2155         u8 port_index;
2156         int err;
2157
2158         err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2159         if (err)
2160                 return err;
2161         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2162         if (!lag->ref_count) {
2163                 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2164                 if (err)
2165                         return err;
2166                 lag->dev = lag_dev;
2167         }
2168
2169         err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2170         if (err)
2171                 return err;
2172         err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2173         if (err)
2174                 goto err_col_port_add;
2175         err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2176         if (err)
2177                 goto err_col_port_enable;
2178
2179         mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2180                                    mlxsw_sp_port->local_port);
2181         mlxsw_sp_port->lag_id = lag_id;
2182         mlxsw_sp_port->lagged = 1;
2183         lag->ref_count++;
2184         return 0;
2185
2186 err_col_port_add:
2187         if (!lag->ref_count)
2188                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2189 err_col_port_enable:
2190         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2191         return err;
2192 }
2193
2194 static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2195                                    struct net_device *lag_dev)
2196 {
2197         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2198         struct mlxsw_sp_upper *lag;
2199         u16 lag_id = mlxsw_sp_port->lag_id;
2200         int err;
2201
2202         if (!mlxsw_sp_port->lagged)
2203                 return 0;
2204         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2205         WARN_ON(lag->ref_count == 0);
2206
2207         err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2208         if (err)
2209                 return err;
2210         err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2211         if (err)
2212                 return err;
2213
2214         if (lag->ref_count == 1) {
2215                 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2216                 if (err)
2217                         return err;
2218         }
2219
2220         mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2221                                      mlxsw_sp_port->local_port);
2222         mlxsw_sp_port->lagged = 0;
2223         lag->ref_count--;
2224         return 0;
2225 }
2226
2227 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2228                                       u16 lag_id)
2229 {
2230         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2231         char sldr_pl[MLXSW_REG_SLDR_LEN];
2232
2233         mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2234                                          mlxsw_sp_port->local_port);
2235         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2236 }
2237
2238 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2239                                          u16 lag_id)
2240 {
2241         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2242         char sldr_pl[MLXSW_REG_SLDR_LEN];
2243
2244         mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2245                                             mlxsw_sp_port->local_port);
2246         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2247 }
2248
2249 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2250                                        bool lag_tx_enabled)
2251 {
2252         if (lag_tx_enabled)
2253                 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2254                                                   mlxsw_sp_port->lag_id);
2255         else
2256                 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2257                                                      mlxsw_sp_port->lag_id);
2258 }
2259
2260 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2261                                      struct netdev_lag_lower_state_info *info)
2262 {
2263         return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2264 }
2265
2266 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2267                                        struct net_device *br_dev);
2268
2269 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2270                                    struct net_device *vlan_dev)
2271 {
2272         struct mlxsw_sp_port *mlxsw_sp_vport;
2273         u16 vid = vlan_dev_vlan_id(vlan_dev);
2274
2275         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2276         if (!mlxsw_sp_vport) {
2277                 WARN_ON(!mlxsw_sp_vport);
2278                 return -EINVAL;
2279         }
2280
2281         mlxsw_sp_vport->dev = vlan_dev;
2282
2283         return 0;
2284 }
2285
2286 static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2287                                      struct net_device *vlan_dev)
2288 {
2289         struct mlxsw_sp_port *mlxsw_sp_vport;
2290         u16 vid = vlan_dev_vlan_id(vlan_dev);
2291
2292         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2293         if (!mlxsw_sp_vport) {
2294                 WARN_ON(!mlxsw_sp_vport);
2295                 return -EINVAL;
2296         }
2297
2298         /* When removing a VLAN device while still bridged we should first
2299          * remove it from the bridge, as we receive the bridge's notification
2300          * when the vPort is already gone.
2301          */
2302         if (mlxsw_sp_vport->bridged) {
2303                 struct net_device *br_dev;
2304
2305                 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2306                 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev);
2307         }
2308
2309         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2310
2311         return 0;
2312 }
2313
2314 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2315                                                unsigned long event, void *ptr)
2316 {
2317         struct netdev_notifier_changeupper_info *info;
2318         struct mlxsw_sp_port *mlxsw_sp_port;
2319         struct net_device *upper_dev;
2320         struct mlxsw_sp *mlxsw_sp;
2321         int err;
2322
2323         mlxsw_sp_port = netdev_priv(dev);
2324         mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2325         info = ptr;
2326
2327         switch (event) {
2328         case NETDEV_PRECHANGEUPPER:
2329                 upper_dev = info->upper_dev;
2330                 if (!info->master || !info->linking)
2331                         break;
2332                 /* HW limitation forbids to put ports to multiple bridges. */
2333                 if (netif_is_bridge_master(upper_dev) &&
2334                     !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2335                         return NOTIFY_BAD;
2336                 if (netif_is_lag_master(upper_dev) &&
2337                     !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2338                                                info->upper_info))
2339                         return NOTIFY_BAD;
2340                 break;
2341         case NETDEV_CHANGEUPPER:
2342                 upper_dev = info->upper_dev;
2343                 if (is_vlan_dev(upper_dev)) {
2344                         if (info->linking) {
2345                                 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2346                                                               upper_dev);
2347                                 if (err) {
2348                                         netdev_err(dev, "Failed to link VLAN device\n");
2349                                         return NOTIFY_BAD;
2350                                 }
2351                         } else {
2352                                 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2353                                                                 upper_dev);
2354                                 if (err) {
2355                                         netdev_err(dev, "Failed to unlink VLAN device\n");
2356                                         return NOTIFY_BAD;
2357                                 }
2358                         }
2359                 } else if (netif_is_bridge_master(upper_dev)) {
2360                         if (info->linking) {
2361                                 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2362                                 if (err) {
2363                                         netdev_err(dev, "Failed to join bridge\n");
2364                                         return NOTIFY_BAD;
2365                                 }
2366                                 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
2367                         } else {
2368                                 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
2369                                 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2370                                 if (err) {
2371                                         netdev_err(dev, "Failed to leave bridge\n");
2372                                         return NOTIFY_BAD;
2373                                 }
2374                         }
2375                 } else if (netif_is_lag_master(upper_dev)) {
2376                         if (info->linking) {
2377                                 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2378                                                              upper_dev);
2379                                 if (err) {
2380                                         netdev_err(dev, "Failed to join link aggregation\n");
2381                                         return NOTIFY_BAD;
2382                                 }
2383                         } else {
2384                                 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2385                                                               upper_dev);
2386                                 if (err) {
2387                                         netdev_err(dev, "Failed to leave link aggregation\n");
2388                                         return NOTIFY_BAD;
2389                                 }
2390                         }
2391                 }
2392                 break;
2393         }
2394
2395         return NOTIFY_DONE;
2396 }
2397
2398 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2399                                                unsigned long event, void *ptr)
2400 {
2401         struct netdev_notifier_changelowerstate_info *info;
2402         struct mlxsw_sp_port *mlxsw_sp_port;
2403         int err;
2404
2405         mlxsw_sp_port = netdev_priv(dev);
2406         info = ptr;
2407
2408         switch (event) {
2409         case NETDEV_CHANGELOWERSTATE:
2410                 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2411                         err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2412                                                         info->lower_state_info);
2413                         if (err)
2414                                 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2415                 }
2416                 break;
2417         }
2418
2419         return NOTIFY_DONE;
2420 }
2421
2422 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2423                                          unsigned long event, void *ptr)
2424 {
2425         switch (event) {
2426         case NETDEV_PRECHANGEUPPER:
2427         case NETDEV_CHANGEUPPER:
2428                 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2429         case NETDEV_CHANGELOWERSTATE:
2430                 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2431         }
2432
2433         return NOTIFY_DONE;
2434 }
2435
2436 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2437                                         unsigned long event, void *ptr)
2438 {
2439         struct net_device *dev;
2440         struct list_head *iter;
2441         int ret;
2442
2443         netdev_for_each_lower_dev(lag_dev, dev, iter) {
2444                 if (mlxsw_sp_port_dev_check(dev)) {
2445                         ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2446                         if (ret == NOTIFY_BAD)
2447                                 return ret;
2448                 }
2449         }
2450
2451         return NOTIFY_DONE;
2452 }
2453
2454 static struct mlxsw_sp_vfid *
2455 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2456                       const struct net_device *br_dev)
2457 {
2458         struct mlxsw_sp_vfid *vfid;
2459
2460         list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2461                 if (vfid->br_dev == br_dev)
2462                         return vfid;
2463         }
2464
2465         return NULL;
2466 }
2467
2468 static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2469 {
2470         return vfid - MLXSW_SP_VFID_PORT_MAX;
2471 }
2472
2473 static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2474 {
2475         return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2476 }
2477
2478 static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2479 {
2480         return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2481                                    MLXSW_SP_VFID_BR_MAX);
2482 }
2483
2484 static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2485                                                      struct net_device *br_dev)
2486 {
2487         struct device *dev = mlxsw_sp->bus_info->dev;
2488         struct mlxsw_sp_vfid *vfid;
2489         u16 n_vfid;
2490         int err;
2491
2492         n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2493         if (n_vfid == MLXSW_SP_VFID_MAX) {
2494                 dev_err(dev, "No available vFIDs\n");
2495                 return ERR_PTR(-ERANGE);
2496         }
2497
2498         err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2499         if (err) {
2500                 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2501                 return ERR_PTR(err);
2502         }
2503
2504         vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2505         if (!vfid)
2506                 goto err_allocate_vfid;
2507
2508         vfid->vfid = n_vfid;
2509         vfid->br_dev = br_dev;
2510
2511         list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2512         set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2513
2514         return vfid;
2515
2516 err_allocate_vfid:
2517         __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2518         return ERR_PTR(-ENOMEM);
2519 }
2520
2521 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2522                                      struct mlxsw_sp_vfid *vfid)
2523 {
2524         u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2525
2526         clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2527         list_del(&vfid->list);
2528
2529         __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2530
2531         kfree(vfid);
2532 }
2533
2534 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2535                                        struct net_device *br_dev)
2536 {
2537         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2538         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2539         struct net_device *dev = mlxsw_sp_vport->dev;
2540         struct mlxsw_sp_vfid *vfid, *new_vfid;
2541         int err;
2542
2543         vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2544         if (!vfid) {
2545                 WARN_ON(!vfid);
2546                 return -EINVAL;
2547         }
2548
2549         /* We need a vFID to go back to after leaving the bridge's vFID. */
2550         new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2551         if (!new_vfid) {
2552                 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2553                 if (IS_ERR(new_vfid)) {
2554                         netdev_err(dev, "Failed to create vFID for VID=%d\n",
2555                                    vid);
2556                         return PTR_ERR(new_vfid);
2557                 }
2558         }
2559
2560         /* Invalidate existing {Port, VID} to vFID mapping and create a new
2561          * one for the new vFID.
2562          */
2563         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2564                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2565                                            false,
2566                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
2567                                            vid);
2568         if (err) {
2569                 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2570                            vfid->vfid);
2571                 goto err_port_vid_to_fid_invalidate;
2572         }
2573
2574         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2575                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2576                                            true,
2577                                            mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2578                                            vid);
2579         if (err) {
2580                 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2581                            new_vfid->vfid);
2582                 goto err_port_vid_to_fid_validate;
2583         }
2584
2585         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2586         if (err) {
2587                 netdev_err(dev, "Failed to disable learning\n");
2588                 goto err_port_vid_learning_set;
2589         }
2590
2591         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2592                                        false);
2593         if (err) {
2594                 netdev_err(dev, "Failed clear to clear flooding\n");
2595                 goto err_vport_flood_set;
2596         }
2597
2598         /* Switch between the vFIDs and destroy the old one if needed. */
2599         new_vfid->nr_vports++;
2600         mlxsw_sp_vport->vport.vfid = new_vfid;
2601         vfid->nr_vports--;
2602         if (!vfid->nr_vports)
2603                 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2604
2605         mlxsw_sp_vport->learning = 0;
2606         mlxsw_sp_vport->learning_sync = 0;
2607         mlxsw_sp_vport->uc_flood = 0;
2608         mlxsw_sp_vport->bridged = 0;
2609
2610         return 0;
2611
2612 err_vport_flood_set:
2613 err_port_vid_learning_set:
2614 err_port_vid_to_fid_validate:
2615 err_port_vid_to_fid_invalidate:
2616         /* Rollback vFID only if new. */
2617         if (!new_vfid->nr_vports)
2618                 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
2619         return err;
2620 }
2621
2622 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
2623                                       struct net_device *br_dev)
2624 {
2625         struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
2626         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2627         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2628         struct net_device *dev = mlxsw_sp_vport->dev;
2629         struct mlxsw_sp_vfid *vfid;
2630         int err;
2631
2632         vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2633         if (!vfid) {
2634                 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
2635                 if (IS_ERR(vfid)) {
2636                         netdev_err(dev, "Failed to create bridge vFID\n");
2637                         return PTR_ERR(vfid);
2638                 }
2639         }
2640
2641         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
2642         if (err) {
2643                 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
2644                            vfid->vfid);
2645                 goto err_port_flood_set;
2646         }
2647
2648         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
2649         if (err) {
2650                 netdev_err(dev, "Failed to enable learning\n");
2651                 goto err_port_vid_learning_set;
2652         }
2653
2654         /* We need to invalidate existing {Port, VID} to vFID mapping and
2655          * create a new one for the bridge's vFID.
2656          */
2657         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2658                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2659                                            false,
2660                                            mlxsw_sp_vfid_to_fid(old_vfid->vfid),
2661                                            vid);
2662         if (err) {
2663                 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2664                            old_vfid->vfid);
2665                 goto err_port_vid_to_fid_invalidate;
2666         }
2667
2668         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2669                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2670                                            true,
2671                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
2672                                            vid);
2673         if (err) {
2674                 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2675                            vfid->vfid);
2676                 goto err_port_vid_to_fid_validate;
2677         }
2678
2679         /* Switch between the vFIDs and destroy the old one if needed. */
2680         vfid->nr_vports++;
2681         mlxsw_sp_vport->vport.vfid = vfid;
2682         old_vfid->nr_vports--;
2683         if (!old_vfid->nr_vports)
2684                 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
2685
2686         mlxsw_sp_vport->learning = 1;
2687         mlxsw_sp_vport->learning_sync = 1;
2688         mlxsw_sp_vport->uc_flood = 1;
2689         mlxsw_sp_vport->bridged = 1;
2690
2691         return 0;
2692
2693 err_port_vid_to_fid_validate:
2694         mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2695                                      MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
2696                                      mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
2697 err_port_vid_to_fid_invalidate:
2698         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2699 err_port_vid_learning_set:
2700         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
2701 err_port_flood_set:
2702         if (!vfid->nr_vports)
2703                 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2704         return err;
2705 }
2706
2707 static bool
2708 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
2709                                   const struct net_device *br_dev)
2710 {
2711         struct mlxsw_sp_port *mlxsw_sp_vport;
2712
2713         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2714                             vport.list) {
2715                 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
2716                         return false;
2717         }
2718
2719         return true;
2720 }
2721
2722 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
2723                                           unsigned long event, void *ptr,
2724                                           u16 vid)
2725 {
2726         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
2727         struct netdev_notifier_changeupper_info *info = ptr;
2728         struct mlxsw_sp_port *mlxsw_sp_vport;
2729         struct net_device *upper_dev;
2730         int err;
2731
2732         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2733
2734         switch (event) {
2735         case NETDEV_PRECHANGEUPPER:
2736                 upper_dev = info->upper_dev;
2737                 if (!info->master || !info->linking)
2738                         break;
2739                 if (!netif_is_bridge_master(upper_dev))
2740                         return NOTIFY_BAD;
2741                 /* We can't have multiple VLAN interfaces configured on
2742                  * the same port and being members in the same bridge.
2743                  */
2744                 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
2745                                                        upper_dev))
2746                         return NOTIFY_BAD;
2747                 break;
2748         case NETDEV_CHANGEUPPER:
2749                 upper_dev = info->upper_dev;
2750                 if (!info->master)
2751                         break;
2752                 if (info->linking) {
2753                         if (!mlxsw_sp_vport) {
2754                                 WARN_ON(!mlxsw_sp_vport);
2755                                 return NOTIFY_BAD;
2756                         }
2757                         err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
2758                                                          upper_dev);
2759                         if (err) {
2760                                 netdev_err(dev, "Failed to join bridge\n");
2761                                 return NOTIFY_BAD;
2762                         }
2763                 } else {
2764                         /* We ignore bridge's unlinking notifications if vPort
2765                          * is gone, since we already left the bridge when the
2766                          * VLAN device was unlinked from the real device.
2767                          */
2768                         if (!mlxsw_sp_vport)
2769                                 return NOTIFY_DONE;
2770                         err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
2771                                                           upper_dev);
2772                         if (err) {
2773                                 netdev_err(dev, "Failed to leave bridge\n");
2774                                 return NOTIFY_BAD;
2775                         }
2776                 }
2777         }
2778
2779         return NOTIFY_DONE;
2780 }
2781
2782 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
2783                                               unsigned long event, void *ptr,
2784                                               u16 vid)
2785 {
2786         struct net_device *dev;
2787         struct list_head *iter;
2788         int ret;
2789
2790         netdev_for_each_lower_dev(lag_dev, dev, iter) {
2791                 if (mlxsw_sp_port_dev_check(dev)) {
2792                         ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
2793                                                              vid);
2794                         if (ret == NOTIFY_BAD)
2795                                 return ret;
2796                 }
2797         }
2798
2799         return NOTIFY_DONE;
2800 }
2801
2802 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
2803                                          unsigned long event, void *ptr)
2804 {
2805         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
2806         u16 vid = vlan_dev_vlan_id(vlan_dev);
2807
2808         if (mlxsw_sp_port_dev_check(real_dev))
2809                 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
2810                                                       vid);
2811         else if (netif_is_lag_master(real_dev))
2812                 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
2813                                                           vid);
2814
2815         return NOTIFY_DONE;
2816 }
2817
2818 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
2819                                     unsigned long event, void *ptr)
2820 {
2821         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2822
2823         if (mlxsw_sp_port_dev_check(dev))
2824                 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
2825
2826         if (netif_is_lag_master(dev))
2827                 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
2828
2829         if (is_vlan_dev(dev))
2830                 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
2831
2832         return NOTIFY_DONE;
2833 }
2834
2835 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
2836         .notifier_call = mlxsw_sp_netdevice_event,
2837 };
2838
2839 static int __init mlxsw_sp_module_init(void)
2840 {
2841         int err;
2842
2843         register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2844         err = mlxsw_core_driver_register(&mlxsw_sp_driver);
2845         if (err)
2846                 goto err_core_driver_register;
2847         return 0;
2848
2849 err_core_driver_register:
2850         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2851         return err;
2852 }
2853
2854 static void __exit mlxsw_sp_module_exit(void)
2855 {
2856         mlxsw_core_driver_unregister(&mlxsw_sp_driver);
2857         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2858 }
2859
2860 module_init(mlxsw_sp_module_init);
2861 module_exit(mlxsw_sp_module_exit);
2862
2863 MODULE_LICENSE("Dual BSD/GPL");
2864 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
2865 MODULE_DESCRIPTION("Mellanox Spectrum driver");
2866 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);