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         mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
1374         if (!mlxsw_sp_port->untagged_vlans) {
1375                 err = -ENOMEM;
1376                 goto err_port_untagged_vlans_alloc;
1377         }
1378         INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
1379
1380         mlxsw_sp_port->pcpu_stats =
1381                 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1382         if (!mlxsw_sp_port->pcpu_stats) {
1383                 err = -ENOMEM;
1384                 goto err_alloc_stats;
1385         }
1386
1387         dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1388         dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1389
1390         err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1391         if (err) {
1392                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1393                         mlxsw_sp_port->local_port);
1394                 goto err_dev_addr_init;
1395         }
1396
1397         netif_carrier_off(dev);
1398
1399         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1400                          NETIF_F_HW_VLAN_CTAG_FILTER;
1401
1402         /* Each packet needs to have a Tx header (metadata) on top all other
1403          * headers.
1404          */
1405         dev->hard_header_len += MLXSW_TXHDR_LEN;
1406
1407         err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
1408         if (err) {
1409                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to check module\n",
1410                         mlxsw_sp_port->local_port);
1411                 goto err_port_module_check;
1412         }
1413
1414         if (!usable) {
1415                 dev_dbg(mlxsw_sp->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
1416                         mlxsw_sp_port->local_port);
1417                 goto port_not_usable;
1418         }
1419
1420         err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1421         if (err) {
1422                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1423                         mlxsw_sp_port->local_port);
1424                 goto err_port_system_port_mapping_set;
1425         }
1426
1427         err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1428         if (err) {
1429                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1430                         mlxsw_sp_port->local_port);
1431                 goto err_port_swid_set;
1432         }
1433
1434         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1435         if (err) {
1436                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1437                         mlxsw_sp_port->local_port);
1438                 goto err_port_mtu_set;
1439         }
1440
1441         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1442         if (err)
1443                 goto err_port_admin_status_set;
1444
1445         err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1446         if (err) {
1447                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1448                         mlxsw_sp_port->local_port);
1449                 goto err_port_buffers_init;
1450         }
1451
1452         mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1453         err = register_netdev(dev);
1454         if (err) {
1455                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1456                         mlxsw_sp_port->local_port);
1457                 goto err_register_netdev;
1458         }
1459
1460         err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1461         if (err)
1462                 goto err_port_vlan_init;
1463
1464         mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1465         return 0;
1466
1467 err_port_vlan_init:
1468         unregister_netdev(dev);
1469 err_register_netdev:
1470 err_port_buffers_init:
1471 err_port_admin_status_set:
1472 err_port_mtu_set:
1473 err_port_swid_set:
1474 err_port_system_port_mapping_set:
1475 port_not_usable:
1476 err_port_module_check:
1477 err_dev_addr_init:
1478         free_percpu(mlxsw_sp_port->pcpu_stats);
1479 err_alloc_stats:
1480         kfree(mlxsw_sp_port->untagged_vlans);
1481 err_port_untagged_vlans_alloc:
1482         kfree(mlxsw_sp_port->active_vlans);
1483 err_port_active_vlans_alloc:
1484         free_netdev(dev);
1485         return err;
1486 }
1487
1488 static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1489 {
1490         struct net_device *dev = mlxsw_sp_port->dev;
1491         struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1492
1493         list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1494                                  &mlxsw_sp_port->vports_list, vport.list) {
1495                 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1496
1497                 /* vPorts created for VLAN devices should already be gone
1498                  * by now, since we unregistered the port netdev.
1499                  */
1500                 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1501                 mlxsw_sp_port_kill_vid(dev, 0, vid);
1502         }
1503 }
1504
1505 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1506 {
1507         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1508
1509         if (!mlxsw_sp_port)
1510                 return;
1511         unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1512         mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1513         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1514         free_percpu(mlxsw_sp_port->pcpu_stats);
1515         kfree(mlxsw_sp_port->untagged_vlans);
1516         kfree(mlxsw_sp_port->active_vlans);
1517         free_netdev(mlxsw_sp_port->dev);
1518 }
1519
1520 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1521 {
1522         int i;
1523
1524         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1525                 mlxsw_sp_port_remove(mlxsw_sp, i);
1526         kfree(mlxsw_sp->ports);
1527 }
1528
1529 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1530 {
1531         size_t alloc_size;
1532         int i;
1533         int err;
1534
1535         alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1536         mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1537         if (!mlxsw_sp->ports)
1538                 return -ENOMEM;
1539
1540         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1541                 err = mlxsw_sp_port_create(mlxsw_sp, i);
1542                 if (err)
1543                         goto err_port_create;
1544         }
1545         return 0;
1546
1547 err_port_create:
1548         for (i--; i >= 1; i--)
1549                 mlxsw_sp_port_remove(mlxsw_sp, i);
1550         kfree(mlxsw_sp->ports);
1551         return err;
1552 }
1553
1554 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1555                                      char *pude_pl, void *priv)
1556 {
1557         struct mlxsw_sp *mlxsw_sp = priv;
1558         struct mlxsw_sp_port *mlxsw_sp_port;
1559         enum mlxsw_reg_pude_oper_status status;
1560         u8 local_port;
1561
1562         local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1563         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1564         if (!mlxsw_sp_port) {
1565                 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1566                          local_port);
1567                 return;
1568         }
1569
1570         status = mlxsw_reg_pude_oper_status_get(pude_pl);
1571         if (status == MLXSW_PORT_OPER_STATUS_UP) {
1572                 netdev_info(mlxsw_sp_port->dev, "link up\n");
1573                 netif_carrier_on(mlxsw_sp_port->dev);
1574         } else {
1575                 netdev_info(mlxsw_sp_port->dev, "link down\n");
1576                 netif_carrier_off(mlxsw_sp_port->dev);
1577         }
1578 }
1579
1580 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1581         .func = mlxsw_sp_pude_event_func,
1582         .trap_id = MLXSW_TRAP_ID_PUDE,
1583 };
1584
1585 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1586                                    enum mlxsw_event_trap_id trap_id)
1587 {
1588         struct mlxsw_event_listener *el;
1589         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1590         int err;
1591
1592         switch (trap_id) {
1593         case MLXSW_TRAP_ID_PUDE:
1594                 el = &mlxsw_sp_pude_event;
1595                 break;
1596         }
1597         err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1598         if (err)
1599                 return err;
1600
1601         mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1602         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1603         if (err)
1604                 goto err_event_trap_set;
1605
1606         return 0;
1607
1608 err_event_trap_set:
1609         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1610         return err;
1611 }
1612
1613 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1614                                       enum mlxsw_event_trap_id trap_id)
1615 {
1616         struct mlxsw_event_listener *el;
1617
1618         switch (trap_id) {
1619         case MLXSW_TRAP_ID_PUDE:
1620                 el = &mlxsw_sp_pude_event;
1621                 break;
1622         }
1623         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1624 }
1625
1626 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1627                                       void *priv)
1628 {
1629         struct mlxsw_sp *mlxsw_sp = priv;
1630         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1631         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1632
1633         if (unlikely(!mlxsw_sp_port)) {
1634                 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1635                                      local_port);
1636                 return;
1637         }
1638
1639         skb->dev = mlxsw_sp_port->dev;
1640
1641         pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1642         u64_stats_update_begin(&pcpu_stats->syncp);
1643         pcpu_stats->rx_packets++;
1644         pcpu_stats->rx_bytes += skb->len;
1645         u64_stats_update_end(&pcpu_stats->syncp);
1646
1647         skb->protocol = eth_type_trans(skb, skb->dev);
1648         netif_receive_skb(skb);
1649 }
1650
1651 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1652         {
1653                 .func = mlxsw_sp_rx_listener_func,
1654                 .local_port = MLXSW_PORT_DONT_CARE,
1655                 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1656         },
1657         /* Traps for specific L2 packet types, not trapped as FDB MC */
1658         {
1659                 .func = mlxsw_sp_rx_listener_func,
1660                 .local_port = MLXSW_PORT_DONT_CARE,
1661                 .trap_id = MLXSW_TRAP_ID_STP,
1662         },
1663         {
1664                 .func = mlxsw_sp_rx_listener_func,
1665                 .local_port = MLXSW_PORT_DONT_CARE,
1666                 .trap_id = MLXSW_TRAP_ID_LACP,
1667         },
1668         {
1669                 .func = mlxsw_sp_rx_listener_func,
1670                 .local_port = MLXSW_PORT_DONT_CARE,
1671                 .trap_id = MLXSW_TRAP_ID_EAPOL,
1672         },
1673         {
1674                 .func = mlxsw_sp_rx_listener_func,
1675                 .local_port = MLXSW_PORT_DONT_CARE,
1676                 .trap_id = MLXSW_TRAP_ID_LLDP,
1677         },
1678         {
1679                 .func = mlxsw_sp_rx_listener_func,
1680                 .local_port = MLXSW_PORT_DONT_CARE,
1681                 .trap_id = MLXSW_TRAP_ID_MMRP,
1682         },
1683         {
1684                 .func = mlxsw_sp_rx_listener_func,
1685                 .local_port = MLXSW_PORT_DONT_CARE,
1686                 .trap_id = MLXSW_TRAP_ID_MVRP,
1687         },
1688         {
1689                 .func = mlxsw_sp_rx_listener_func,
1690                 .local_port = MLXSW_PORT_DONT_CARE,
1691                 .trap_id = MLXSW_TRAP_ID_RPVST,
1692         },
1693         {
1694                 .func = mlxsw_sp_rx_listener_func,
1695                 .local_port = MLXSW_PORT_DONT_CARE,
1696                 .trap_id = MLXSW_TRAP_ID_DHCP,
1697         },
1698         {
1699                 .func = mlxsw_sp_rx_listener_func,
1700                 .local_port = MLXSW_PORT_DONT_CARE,
1701                 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1702         },
1703         {
1704                 .func = mlxsw_sp_rx_listener_func,
1705                 .local_port = MLXSW_PORT_DONT_CARE,
1706                 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1707         },
1708         {
1709                 .func = mlxsw_sp_rx_listener_func,
1710                 .local_port = MLXSW_PORT_DONT_CARE,
1711                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1712         },
1713         {
1714                 .func = mlxsw_sp_rx_listener_func,
1715                 .local_port = MLXSW_PORT_DONT_CARE,
1716                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1717         },
1718         {
1719                 .func = mlxsw_sp_rx_listener_func,
1720                 .local_port = MLXSW_PORT_DONT_CARE,
1721                 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1722         },
1723 };
1724
1725 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1726 {
1727         char htgt_pl[MLXSW_REG_HTGT_LEN];
1728         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1729         int i;
1730         int err;
1731
1732         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1733         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1734         if (err)
1735                 return err;
1736
1737         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1738         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1739         if (err)
1740                 return err;
1741
1742         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1743                 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1744                                                       &mlxsw_sp_rx_listener[i],
1745                                                       mlxsw_sp);
1746                 if (err)
1747                         goto err_rx_listener_register;
1748
1749                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1750                                     mlxsw_sp_rx_listener[i].trap_id);
1751                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1752                 if (err)
1753                         goto err_rx_trap_set;
1754         }
1755         return 0;
1756
1757 err_rx_trap_set:
1758         mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1759                                           &mlxsw_sp_rx_listener[i],
1760                                           mlxsw_sp);
1761 err_rx_listener_register:
1762         for (i--; i >= 0; i--) {
1763                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1764                                     mlxsw_sp_rx_listener[i].trap_id);
1765                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1766
1767                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1768                                                   &mlxsw_sp_rx_listener[i],
1769                                                   mlxsw_sp);
1770         }
1771         return err;
1772 }
1773
1774 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
1775 {
1776         char hpkt_pl[MLXSW_REG_HPKT_LEN];
1777         int i;
1778
1779         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1780                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1781                                     mlxsw_sp_rx_listener[i].trap_id);
1782                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1783
1784                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1785                                                   &mlxsw_sp_rx_listener[i],
1786                                                   mlxsw_sp);
1787         }
1788 }
1789
1790 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
1791                                  enum mlxsw_reg_sfgc_type type,
1792                                  enum mlxsw_reg_sfgc_bridge_type bridge_type)
1793 {
1794         enum mlxsw_flood_table_type table_type;
1795         enum mlxsw_sp_flood_table flood_table;
1796         char sfgc_pl[MLXSW_REG_SFGC_LEN];
1797
1798         if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
1799                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
1800         else
1801                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
1802
1803         if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
1804                 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
1805         else
1806                 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
1807
1808         mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
1809                             flood_table);
1810         return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
1811 }
1812
1813 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
1814 {
1815         int type, err;
1816
1817         for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
1818                 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
1819                         continue;
1820
1821                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1822                                             MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
1823                 if (err)
1824                         return err;
1825
1826                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1827                                             MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
1828                 if (err)
1829                         return err;
1830         }
1831
1832         return 0;
1833 }
1834
1835 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
1836 {
1837         char slcr_pl[MLXSW_REG_SLCR_LEN];
1838
1839         mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
1840                                      MLXSW_REG_SLCR_LAG_HASH_DMAC |
1841                                      MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
1842                                      MLXSW_REG_SLCR_LAG_HASH_VLANID |
1843                                      MLXSW_REG_SLCR_LAG_HASH_SIP |
1844                                      MLXSW_REG_SLCR_LAG_HASH_DIP |
1845                                      MLXSW_REG_SLCR_LAG_HASH_SPORT |
1846                                      MLXSW_REG_SLCR_LAG_HASH_DPORT |
1847                                      MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
1848         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
1849 }
1850
1851 static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
1852                          const struct mlxsw_bus_info *mlxsw_bus_info)
1853 {
1854         struct mlxsw_sp *mlxsw_sp = priv;
1855         int err;
1856
1857         mlxsw_sp->core = mlxsw_core;
1858         mlxsw_sp->bus_info = mlxsw_bus_info;
1859         INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
1860         INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
1861         INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
1862
1863         err = mlxsw_sp_base_mac_get(mlxsw_sp);
1864         if (err) {
1865                 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
1866                 return err;
1867         }
1868
1869         err = mlxsw_sp_ports_create(mlxsw_sp);
1870         if (err) {
1871                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
1872                 return err;
1873         }
1874
1875         err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1876         if (err) {
1877                 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
1878                 goto err_event_register;
1879         }
1880
1881         err = mlxsw_sp_traps_init(mlxsw_sp);
1882         if (err) {
1883                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
1884                 goto err_rx_listener_register;
1885         }
1886
1887         err = mlxsw_sp_flood_init(mlxsw_sp);
1888         if (err) {
1889                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
1890                 goto err_flood_init;
1891         }
1892
1893         err = mlxsw_sp_buffers_init(mlxsw_sp);
1894         if (err) {
1895                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
1896                 goto err_buffers_init;
1897         }
1898
1899         err = mlxsw_sp_lag_init(mlxsw_sp);
1900         if (err) {
1901                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
1902                 goto err_lag_init;
1903         }
1904
1905         err = mlxsw_sp_switchdev_init(mlxsw_sp);
1906         if (err) {
1907                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
1908                 goto err_switchdev_init;
1909         }
1910
1911         return 0;
1912
1913 err_switchdev_init:
1914 err_lag_init:
1915 err_buffers_init:
1916 err_flood_init:
1917         mlxsw_sp_traps_fini(mlxsw_sp);
1918 err_rx_listener_register:
1919         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1920 err_event_register:
1921         mlxsw_sp_ports_remove(mlxsw_sp);
1922         return err;
1923 }
1924
1925 static void mlxsw_sp_fini(void *priv)
1926 {
1927         struct mlxsw_sp *mlxsw_sp = priv;
1928
1929         mlxsw_sp_switchdev_fini(mlxsw_sp);
1930         mlxsw_sp_traps_fini(mlxsw_sp);
1931         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1932         mlxsw_sp_ports_remove(mlxsw_sp);
1933 }
1934
1935 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
1936         .used_max_vepa_channels         = 1,
1937         .max_vepa_channels              = 0,
1938         .used_max_lag                   = 1,
1939         .max_lag                        = MLXSW_SP_LAG_MAX,
1940         .used_max_port_per_lag          = 1,
1941         .max_port_per_lag               = MLXSW_SP_PORT_PER_LAG_MAX,
1942         .used_max_mid                   = 1,
1943         .max_mid                        = MLXSW_SP_MID_MAX,
1944         .used_max_pgt                   = 1,
1945         .max_pgt                        = 0,
1946         .used_max_system_port           = 1,
1947         .max_system_port                = 64,
1948         .used_max_vlan_groups           = 1,
1949         .max_vlan_groups                = 127,
1950         .used_max_regions               = 1,
1951         .max_regions                    = 400,
1952         .used_flood_tables              = 1,
1953         .used_flood_mode                = 1,
1954         .flood_mode                     = 3,
1955         .max_fid_offset_flood_tables    = 2,
1956         .fid_offset_flood_table_size    = VLAN_N_VID - 1,
1957         .max_fid_flood_tables           = 2,
1958         .fid_flood_table_size           = MLXSW_SP_VFID_MAX,
1959         .used_max_ib_mc                 = 1,
1960         .max_ib_mc                      = 0,
1961         .used_max_pkey                  = 1,
1962         .max_pkey                       = 0,
1963         .swid_config                    = {
1964                 {
1965                         .used_type      = 1,
1966                         .type           = MLXSW_PORT_SWID_TYPE_ETH,
1967                 }
1968         },
1969 };
1970
1971 static struct mlxsw_driver mlxsw_sp_driver = {
1972         .kind                   = MLXSW_DEVICE_KIND_SPECTRUM,
1973         .owner                  = THIS_MODULE,
1974         .priv_size              = sizeof(struct mlxsw_sp),
1975         .init                   = mlxsw_sp_init,
1976         .fini                   = mlxsw_sp_fini,
1977         .txhdr_construct        = mlxsw_sp_txhdr_construct,
1978         .txhdr_len              = MLXSW_TXHDR_LEN,
1979         .profile                = &mlxsw_sp_config_profile,
1980 };
1981
1982 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
1983 {
1984         return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
1985 }
1986
1987 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
1988 {
1989         struct net_device *dev = mlxsw_sp_port->dev;
1990         int err;
1991
1992         /* When port is not bridged untagged packets are tagged with
1993          * PVID=VID=1, thereby creating an implicit VLAN interface in
1994          * the device. Remove it and let bridge code take care of its
1995          * own VLANs.
1996          */
1997         err = mlxsw_sp_port_kill_vid(dev, 0, 1);
1998         if (err)
1999                 return err;
2000
2001         mlxsw_sp_port->learning = 1;
2002         mlxsw_sp_port->learning_sync = 1;
2003         mlxsw_sp_port->uc_flood = 1;
2004         mlxsw_sp_port->bridged = 1;
2005
2006         return 0;
2007 }
2008
2009 static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
2010 {
2011         struct net_device *dev = mlxsw_sp_port->dev;
2012
2013         mlxsw_sp_port->learning = 0;
2014         mlxsw_sp_port->learning_sync = 0;
2015         mlxsw_sp_port->uc_flood = 0;
2016         mlxsw_sp_port->bridged = 0;
2017
2018         /* Add implicit VLAN interface in the device, so that untagged
2019          * packets will be classified to the default vFID.
2020          */
2021         return mlxsw_sp_port_add_vid(dev, 0, 1);
2022 }
2023
2024 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2025                                          struct net_device *br_dev)
2026 {
2027         return !mlxsw_sp->master_bridge.dev ||
2028                mlxsw_sp->master_bridge.dev == br_dev;
2029 }
2030
2031 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2032                                        struct net_device *br_dev)
2033 {
2034         mlxsw_sp->master_bridge.dev = br_dev;
2035         mlxsw_sp->master_bridge.ref_count++;
2036 }
2037
2038 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2039                                        struct net_device *br_dev)
2040 {
2041         if (--mlxsw_sp->master_bridge.ref_count == 0)
2042                 mlxsw_sp->master_bridge.dev = NULL;
2043 }
2044
2045 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2046 {
2047         char sldr_pl[MLXSW_REG_SLDR_LEN];
2048
2049         mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2050         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2051 }
2052
2053 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2054 {
2055         char sldr_pl[MLXSW_REG_SLDR_LEN];
2056
2057         mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2058         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2059 }
2060
2061 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2062                                      u16 lag_id, u8 port_index)
2063 {
2064         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2065         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2066
2067         mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2068                                       lag_id, port_index);
2069         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2070 }
2071
2072 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2073                                         u16 lag_id)
2074 {
2075         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2076         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2077
2078         mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2079                                          lag_id);
2080         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2081 }
2082
2083 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2084                                         u16 lag_id)
2085 {
2086         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2087         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2088
2089         mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2090                                         lag_id);
2091         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2092 }
2093
2094 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2095                                          u16 lag_id)
2096 {
2097         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2098         char slcor_pl[MLXSW_REG_SLCOR_LEN];
2099
2100         mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2101                                          lag_id);
2102         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2103 }
2104
2105 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2106                                   struct net_device *lag_dev,
2107                                   u16 *p_lag_id)
2108 {
2109         struct mlxsw_sp_upper *lag;
2110         int free_lag_id = -1;
2111         int i;
2112
2113         for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2114                 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2115                 if (lag->ref_count) {
2116                         if (lag->dev == lag_dev) {
2117                                 *p_lag_id = i;
2118                                 return 0;
2119                         }
2120                 } else if (free_lag_id < 0) {
2121                         free_lag_id = i;
2122                 }
2123         }
2124         if (free_lag_id < 0)
2125                 return -EBUSY;
2126         *p_lag_id = free_lag_id;
2127         return 0;
2128 }
2129
2130 static bool
2131 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2132                           struct net_device *lag_dev,
2133                           struct netdev_lag_upper_info *lag_upper_info)
2134 {
2135         u16 lag_id;
2136
2137         if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2138                 return false;
2139         if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2140                 return false;
2141         return true;
2142 }
2143
2144 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2145                                        u16 lag_id, u8 *p_port_index)
2146 {
2147         int i;
2148
2149         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2150                 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2151                         *p_port_index = i;
2152                         return 0;
2153                 }
2154         }
2155         return -EBUSY;
2156 }
2157
2158 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2159                                   struct net_device *lag_dev)
2160 {
2161         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2162         struct mlxsw_sp_upper *lag;
2163         u16 lag_id;
2164         u8 port_index;
2165         int err;
2166
2167         err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2168         if (err)
2169                 return err;
2170         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2171         if (!lag->ref_count) {
2172                 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2173                 if (err)
2174                         return err;
2175                 lag->dev = lag_dev;
2176         }
2177
2178         err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2179         if (err)
2180                 return err;
2181         err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2182         if (err)
2183                 goto err_col_port_add;
2184         err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2185         if (err)
2186                 goto err_col_port_enable;
2187
2188         mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2189                                    mlxsw_sp_port->local_port);
2190         mlxsw_sp_port->lag_id = lag_id;
2191         mlxsw_sp_port->lagged = 1;
2192         lag->ref_count++;
2193         return 0;
2194
2195 err_col_port_add:
2196         if (!lag->ref_count)
2197                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2198 err_col_port_enable:
2199         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2200         return err;
2201 }
2202
2203 static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2204                                    struct net_device *lag_dev)
2205 {
2206         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2207         struct mlxsw_sp_upper *lag;
2208         u16 lag_id = mlxsw_sp_port->lag_id;
2209         int err;
2210
2211         if (!mlxsw_sp_port->lagged)
2212                 return 0;
2213         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2214         WARN_ON(lag->ref_count == 0);
2215
2216         err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2217         if (err)
2218                 return err;
2219         err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2220         if (err)
2221                 return err;
2222
2223         if (lag->ref_count == 1) {
2224                 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2225                 if (err)
2226                         return err;
2227         }
2228
2229         mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2230                                      mlxsw_sp_port->local_port);
2231         mlxsw_sp_port->lagged = 0;
2232         lag->ref_count--;
2233         return 0;
2234 }
2235
2236 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2237                                       u16 lag_id)
2238 {
2239         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2240         char sldr_pl[MLXSW_REG_SLDR_LEN];
2241
2242         mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2243                                          mlxsw_sp_port->local_port);
2244         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2245 }
2246
2247 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2248                                          u16 lag_id)
2249 {
2250         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2251         char sldr_pl[MLXSW_REG_SLDR_LEN];
2252
2253         mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2254                                             mlxsw_sp_port->local_port);
2255         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2256 }
2257
2258 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2259                                        bool lag_tx_enabled)
2260 {
2261         if (lag_tx_enabled)
2262                 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2263                                                   mlxsw_sp_port->lag_id);
2264         else
2265                 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2266                                                      mlxsw_sp_port->lag_id);
2267 }
2268
2269 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2270                                      struct netdev_lag_lower_state_info *info)
2271 {
2272         return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2273 }
2274
2275 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2276                                        struct net_device *br_dev);
2277
2278 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2279                                    struct net_device *vlan_dev)
2280 {
2281         struct mlxsw_sp_port *mlxsw_sp_vport;
2282         u16 vid = vlan_dev_vlan_id(vlan_dev);
2283
2284         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2285         if (!mlxsw_sp_vport) {
2286                 WARN_ON(!mlxsw_sp_vport);
2287                 return -EINVAL;
2288         }
2289
2290         mlxsw_sp_vport->dev = vlan_dev;
2291
2292         return 0;
2293 }
2294
2295 static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2296                                      struct net_device *vlan_dev)
2297 {
2298         struct mlxsw_sp_port *mlxsw_sp_vport;
2299         u16 vid = vlan_dev_vlan_id(vlan_dev);
2300
2301         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2302         if (!mlxsw_sp_vport) {
2303                 WARN_ON(!mlxsw_sp_vport);
2304                 return -EINVAL;
2305         }
2306
2307         /* When removing a VLAN device while still bridged we should first
2308          * remove it from the bridge, as we receive the bridge's notification
2309          * when the vPort is already gone.
2310          */
2311         if (mlxsw_sp_vport->bridged) {
2312                 struct net_device *br_dev;
2313
2314                 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2315                 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev);
2316         }
2317
2318         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2319
2320         return 0;
2321 }
2322
2323 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2324                                                unsigned long event, void *ptr)
2325 {
2326         struct netdev_notifier_changeupper_info *info;
2327         struct mlxsw_sp_port *mlxsw_sp_port;
2328         struct net_device *upper_dev;
2329         struct mlxsw_sp *mlxsw_sp;
2330         int err;
2331
2332         mlxsw_sp_port = netdev_priv(dev);
2333         mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2334         info = ptr;
2335
2336         switch (event) {
2337         case NETDEV_PRECHANGEUPPER:
2338                 upper_dev = info->upper_dev;
2339                 if (!info->master || !info->linking)
2340                         break;
2341                 /* HW limitation forbids to put ports to multiple bridges. */
2342                 if (netif_is_bridge_master(upper_dev) &&
2343                     !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2344                         return NOTIFY_BAD;
2345                 if (netif_is_lag_master(upper_dev) &&
2346                     !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2347                                                info->upper_info))
2348                         return NOTIFY_BAD;
2349                 break;
2350         case NETDEV_CHANGEUPPER:
2351                 upper_dev = info->upper_dev;
2352                 if (is_vlan_dev(upper_dev)) {
2353                         if (info->linking) {
2354                                 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2355                                                               upper_dev);
2356                                 if (err) {
2357                                         netdev_err(dev, "Failed to link VLAN device\n");
2358                                         return NOTIFY_BAD;
2359                                 }
2360                         } else {
2361                                 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2362                                                                 upper_dev);
2363                                 if (err) {
2364                                         netdev_err(dev, "Failed to unlink VLAN device\n");
2365                                         return NOTIFY_BAD;
2366                                 }
2367                         }
2368                 } else if (netif_is_bridge_master(upper_dev)) {
2369                         if (info->linking) {
2370                                 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2371                                 if (err) {
2372                                         netdev_err(dev, "Failed to join bridge\n");
2373                                         return NOTIFY_BAD;
2374                                 }
2375                                 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
2376                         } else {
2377                                 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
2378                                 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2379                                 if (err) {
2380                                         netdev_err(dev, "Failed to leave bridge\n");
2381                                         return NOTIFY_BAD;
2382                                 }
2383                         }
2384                 } else if (netif_is_lag_master(upper_dev)) {
2385                         if (info->linking) {
2386                                 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2387                                                              upper_dev);
2388                                 if (err) {
2389                                         netdev_err(dev, "Failed to join link aggregation\n");
2390                                         return NOTIFY_BAD;
2391                                 }
2392                         } else {
2393                                 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2394                                                               upper_dev);
2395                                 if (err) {
2396                                         netdev_err(dev, "Failed to leave link aggregation\n");
2397                                         return NOTIFY_BAD;
2398                                 }
2399                         }
2400                 }
2401                 break;
2402         }
2403
2404         return NOTIFY_DONE;
2405 }
2406
2407 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2408                                                unsigned long event, void *ptr)
2409 {
2410         struct netdev_notifier_changelowerstate_info *info;
2411         struct mlxsw_sp_port *mlxsw_sp_port;
2412         int err;
2413
2414         mlxsw_sp_port = netdev_priv(dev);
2415         info = ptr;
2416
2417         switch (event) {
2418         case NETDEV_CHANGELOWERSTATE:
2419                 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2420                         err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2421                                                         info->lower_state_info);
2422                         if (err)
2423                                 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2424                 }
2425                 break;
2426         }
2427
2428         return NOTIFY_DONE;
2429 }
2430
2431 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2432                                          unsigned long event, void *ptr)
2433 {
2434         switch (event) {
2435         case NETDEV_PRECHANGEUPPER:
2436         case NETDEV_CHANGEUPPER:
2437                 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2438         case NETDEV_CHANGELOWERSTATE:
2439                 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2440         }
2441
2442         return NOTIFY_DONE;
2443 }
2444
2445 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2446                                         unsigned long event, void *ptr)
2447 {
2448         struct net_device *dev;
2449         struct list_head *iter;
2450         int ret;
2451
2452         netdev_for_each_lower_dev(lag_dev, dev, iter) {
2453                 if (mlxsw_sp_port_dev_check(dev)) {
2454                         ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2455                         if (ret == NOTIFY_BAD)
2456                                 return ret;
2457                 }
2458         }
2459
2460         return NOTIFY_DONE;
2461 }
2462
2463 static struct mlxsw_sp_vfid *
2464 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2465                       const struct net_device *br_dev)
2466 {
2467         struct mlxsw_sp_vfid *vfid;
2468
2469         list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2470                 if (vfid->br_dev == br_dev)
2471                         return vfid;
2472         }
2473
2474         return NULL;
2475 }
2476
2477 static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2478 {
2479         return vfid - MLXSW_SP_VFID_PORT_MAX;
2480 }
2481
2482 static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2483 {
2484         return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2485 }
2486
2487 static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2488 {
2489         return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2490                                    MLXSW_SP_VFID_BR_MAX);
2491 }
2492
2493 static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2494                                                      struct net_device *br_dev)
2495 {
2496         struct device *dev = mlxsw_sp->bus_info->dev;
2497         struct mlxsw_sp_vfid *vfid;
2498         u16 n_vfid;
2499         int err;
2500
2501         n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2502         if (n_vfid == MLXSW_SP_VFID_MAX) {
2503                 dev_err(dev, "No available vFIDs\n");
2504                 return ERR_PTR(-ERANGE);
2505         }
2506
2507         err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2508         if (err) {
2509                 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2510                 return ERR_PTR(err);
2511         }
2512
2513         vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2514         if (!vfid)
2515                 goto err_allocate_vfid;
2516
2517         vfid->vfid = n_vfid;
2518         vfid->br_dev = br_dev;
2519
2520         list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2521         set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2522
2523         return vfid;
2524
2525 err_allocate_vfid:
2526         __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2527         return ERR_PTR(-ENOMEM);
2528 }
2529
2530 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2531                                      struct mlxsw_sp_vfid *vfid)
2532 {
2533         u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2534
2535         clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2536         list_del(&vfid->list);
2537
2538         __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2539
2540         kfree(vfid);
2541 }
2542
2543 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2544                                        struct net_device *br_dev)
2545 {
2546         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2547         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2548         struct net_device *dev = mlxsw_sp_vport->dev;
2549         struct mlxsw_sp_vfid *vfid, *new_vfid;
2550         int err;
2551
2552         vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2553         if (!vfid) {
2554                 WARN_ON(!vfid);
2555                 return -EINVAL;
2556         }
2557
2558         /* We need a vFID to go back to after leaving the bridge's vFID. */
2559         new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2560         if (!new_vfid) {
2561                 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2562                 if (IS_ERR(new_vfid)) {
2563                         netdev_err(dev, "Failed to create vFID for VID=%d\n",
2564                                    vid);
2565                         return PTR_ERR(new_vfid);
2566                 }
2567         }
2568
2569         /* Invalidate existing {Port, VID} to vFID mapping and create a new
2570          * one for the new vFID.
2571          */
2572         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2573                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2574                                            false,
2575                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
2576                                            vid);
2577         if (err) {
2578                 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2579                            vfid->vfid);
2580                 goto err_port_vid_to_fid_invalidate;
2581         }
2582
2583         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2584                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2585                                            true,
2586                                            mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2587                                            vid);
2588         if (err) {
2589                 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2590                            new_vfid->vfid);
2591                 goto err_port_vid_to_fid_validate;
2592         }
2593
2594         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2595         if (err) {
2596                 netdev_err(dev, "Failed to disable learning\n");
2597                 goto err_port_vid_learning_set;
2598         }
2599
2600         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2601                                        false);
2602         if (err) {
2603                 netdev_err(dev, "Failed clear to clear flooding\n");
2604                 goto err_vport_flood_set;
2605         }
2606
2607         /* Switch between the vFIDs and destroy the old one if needed. */
2608         new_vfid->nr_vports++;
2609         mlxsw_sp_vport->vport.vfid = new_vfid;
2610         vfid->nr_vports--;
2611         if (!vfid->nr_vports)
2612                 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2613
2614         mlxsw_sp_vport->learning = 0;
2615         mlxsw_sp_vport->learning_sync = 0;
2616         mlxsw_sp_vport->uc_flood = 0;
2617         mlxsw_sp_vport->bridged = 0;
2618
2619         return 0;
2620
2621 err_vport_flood_set:
2622 err_port_vid_learning_set:
2623 err_port_vid_to_fid_validate:
2624 err_port_vid_to_fid_invalidate:
2625         /* Rollback vFID only if new. */
2626         if (!new_vfid->nr_vports)
2627                 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
2628         return err;
2629 }
2630
2631 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
2632                                       struct net_device *br_dev)
2633 {
2634         struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
2635         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2636         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2637         struct net_device *dev = mlxsw_sp_vport->dev;
2638         struct mlxsw_sp_vfid *vfid;
2639         int err;
2640
2641         vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2642         if (!vfid) {
2643                 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
2644                 if (IS_ERR(vfid)) {
2645                         netdev_err(dev, "Failed to create bridge vFID\n");
2646                         return PTR_ERR(vfid);
2647                 }
2648         }
2649
2650         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
2651         if (err) {
2652                 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
2653                            vfid->vfid);
2654                 goto err_port_flood_set;
2655         }
2656
2657         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
2658         if (err) {
2659                 netdev_err(dev, "Failed to enable learning\n");
2660                 goto err_port_vid_learning_set;
2661         }
2662
2663         /* We need to invalidate existing {Port, VID} to vFID mapping and
2664          * create a new one for the bridge's vFID.
2665          */
2666         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2667                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2668                                            false,
2669                                            mlxsw_sp_vfid_to_fid(old_vfid->vfid),
2670                                            vid);
2671         if (err) {
2672                 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2673                            old_vfid->vfid);
2674                 goto err_port_vid_to_fid_invalidate;
2675         }
2676
2677         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2678                                            MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2679                                            true,
2680                                            mlxsw_sp_vfid_to_fid(vfid->vfid),
2681                                            vid);
2682         if (err) {
2683                 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2684                            vfid->vfid);
2685                 goto err_port_vid_to_fid_validate;
2686         }
2687
2688         /* Switch between the vFIDs and destroy the old one if needed. */
2689         vfid->nr_vports++;
2690         mlxsw_sp_vport->vport.vfid = vfid;
2691         old_vfid->nr_vports--;
2692         if (!old_vfid->nr_vports)
2693                 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
2694
2695         mlxsw_sp_vport->learning = 1;
2696         mlxsw_sp_vport->learning_sync = 1;
2697         mlxsw_sp_vport->uc_flood = 1;
2698         mlxsw_sp_vport->bridged = 1;
2699
2700         return 0;
2701
2702 err_port_vid_to_fid_validate:
2703         mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2704                                      MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
2705                                      mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
2706 err_port_vid_to_fid_invalidate:
2707         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2708 err_port_vid_learning_set:
2709         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
2710 err_port_flood_set:
2711         if (!vfid->nr_vports)
2712                 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2713         return err;
2714 }
2715
2716 static bool
2717 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
2718                                   const struct net_device *br_dev)
2719 {
2720         struct mlxsw_sp_port *mlxsw_sp_vport;
2721
2722         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2723                             vport.list) {
2724                 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
2725                         return false;
2726         }
2727
2728         return true;
2729 }
2730
2731 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
2732                                           unsigned long event, void *ptr,
2733                                           u16 vid)
2734 {
2735         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
2736         struct netdev_notifier_changeupper_info *info = ptr;
2737         struct mlxsw_sp_port *mlxsw_sp_vport;
2738         struct net_device *upper_dev;
2739         int err;
2740
2741         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2742
2743         switch (event) {
2744         case NETDEV_PRECHANGEUPPER:
2745                 upper_dev = info->upper_dev;
2746                 if (!info->master || !info->linking)
2747                         break;
2748                 if (!netif_is_bridge_master(upper_dev))
2749                         return NOTIFY_BAD;
2750                 /* We can't have multiple VLAN interfaces configured on
2751                  * the same port and being members in the same bridge.
2752                  */
2753                 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
2754                                                        upper_dev))
2755                         return NOTIFY_BAD;
2756                 break;
2757         case NETDEV_CHANGEUPPER:
2758                 upper_dev = info->upper_dev;
2759                 if (!info->master)
2760                         break;
2761                 if (info->linking) {
2762                         if (!mlxsw_sp_vport) {
2763                                 WARN_ON(!mlxsw_sp_vport);
2764                                 return NOTIFY_BAD;
2765                         }
2766                         err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
2767                                                          upper_dev);
2768                         if (err) {
2769                                 netdev_err(dev, "Failed to join bridge\n");
2770                                 return NOTIFY_BAD;
2771                         }
2772                 } else {
2773                         /* We ignore bridge's unlinking notifications if vPort
2774                          * is gone, since we already left the bridge when the
2775                          * VLAN device was unlinked from the real device.
2776                          */
2777                         if (!mlxsw_sp_vport)
2778                                 return NOTIFY_DONE;
2779                         err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
2780                                                           upper_dev);
2781                         if (err) {
2782                                 netdev_err(dev, "Failed to leave bridge\n");
2783                                 return NOTIFY_BAD;
2784                         }
2785                 }
2786         }
2787
2788         return NOTIFY_DONE;
2789 }
2790
2791 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
2792                                               unsigned long event, void *ptr,
2793                                               u16 vid)
2794 {
2795         struct net_device *dev;
2796         struct list_head *iter;
2797         int ret;
2798
2799         netdev_for_each_lower_dev(lag_dev, dev, iter) {
2800                 if (mlxsw_sp_port_dev_check(dev)) {
2801                         ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
2802                                                              vid);
2803                         if (ret == NOTIFY_BAD)
2804                                 return ret;
2805                 }
2806         }
2807
2808         return NOTIFY_DONE;
2809 }
2810
2811 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
2812                                          unsigned long event, void *ptr)
2813 {
2814         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
2815         u16 vid = vlan_dev_vlan_id(vlan_dev);
2816
2817         if (mlxsw_sp_port_dev_check(real_dev))
2818                 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
2819                                                       vid);
2820         else if (netif_is_lag_master(real_dev))
2821                 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
2822                                                           vid);
2823
2824         return NOTIFY_DONE;
2825 }
2826
2827 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
2828                                     unsigned long event, void *ptr)
2829 {
2830         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2831
2832         if (mlxsw_sp_port_dev_check(dev))
2833                 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
2834
2835         if (netif_is_lag_master(dev))
2836                 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
2837
2838         if (is_vlan_dev(dev))
2839                 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
2840
2841         return NOTIFY_DONE;
2842 }
2843
2844 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
2845         .notifier_call = mlxsw_sp_netdevice_event,
2846 };
2847
2848 static int __init mlxsw_sp_module_init(void)
2849 {
2850         int err;
2851
2852         register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2853         err = mlxsw_core_driver_register(&mlxsw_sp_driver);
2854         if (err)
2855                 goto err_core_driver_register;
2856         return 0;
2857
2858 err_core_driver_register:
2859         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2860         return err;
2861 }
2862
2863 static void __exit mlxsw_sp_module_exit(void)
2864 {
2865         mlxsw_core_driver_unregister(&mlxsw_sp_driver);
2866         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2867 }
2868
2869 module_init(mlxsw_sp_module_init);
2870 module_exit(mlxsw_sp_module_exit);
2871
2872 MODULE_LICENSE("Dual BSD/GPL");
2873 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
2874 MODULE_DESCRIPTION("Mellanox Spectrum driver");
2875 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);