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 <linux/notifier.h>
  53 #include <linux/dcbnl.h>
  54 #include <linux/inetdevice.h>
  55 #include <net/switchdev.h>
  56 #include <generated/utsrelease.h>
  57 #include <net/pkt_cls.h>
  58 #include <net/tc_act/tc_mirred.h>
  59 #include <net/netevent.h>
  60
  61 #include "spectrum.h"
  62 #include "core.h"
  63 #include "reg.h"
  64 #include "port.h"
  65 #include "trap.h"
  66 #include "txheader.h"
  67
  68 static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
  69 static const char mlxsw_sp_driver_version[] = "1.0";
  70
  71 /* tx_hdr_version
  72  * Tx header version.
  73  * Must be set to 1.
  74  */
  75 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
  76
  77 /* tx_hdr_ctl
  78  * Packet control type.
  79  * 0 - Ethernet control (e.g. EMADs, LACP)
  80  * 1 - Ethernet data
  81  */
  82 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
  83
  84 /* tx_hdr_proto
  85  * Packet protocol type. Must be set to 1 (Ethernet).
  86  */
  87 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
  88
  89 /* tx_hdr_rx_is_router
  90  * Packet is sent from the router. Valid for data packets only.
  91  */
  92 MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
  93
  94 /* tx_hdr_fid_valid
  95  * Indicates if the 'fid' field is valid and should be used for
  96  * forwarding lookup. Valid for data packets only.
  97  */
  98 MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
  99
 100 /* tx_hdr_swid
 101  * Switch partition ID. Must be set to 0.
 102  */
 103 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
 104
 105 /* tx_hdr_control_tclass
 106  * Indicates if the packet should use the control TClass and not one
 107  * of the data TClasses.
 108  */
 109 MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
 110
 111 /* tx_hdr_etclass
 112  * Egress TClass to be used on the egress device on the egress port.
 113  */
 114 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
 115
 116 /* tx_hdr_port_mid
 117  * Destination local port for unicast packets.
 118  * Destination multicast ID for multicast packets.
 119  *
 120  * Control packets are directed to a specific egress port, while data
 121  * packets are transmitted through the CPU port (0) into the switch partition,
 122  * where forwarding rules are applied.
 123  */
 124 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
 125
 126 /* tx_hdr_fid
 127  * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
 128  * set, otherwise calculated based on the packet's VID using VID to FID mapping.
 129  * Valid for data packets only.
 130  */
 131 MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
 132
 133 /* tx_hdr_type
 134  * 0 - Data packets
 135  * 6 - Control packets
 136  */
 137 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
 138
 139 static bool mlxsw_sp_port_dev_check(const struct net_device *dev);
 140
 141 static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
 142                                      const struct mlxsw_tx_info *tx_info)
 143 {
 144         char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
 145
 146         memset(txhdr, 0, MLXSW_TXHDR_LEN);
 147
 148         mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
 149         mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
 150         mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
 151         mlxsw_tx_hdr_swid_set(txhdr, 0);
 152         mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
 153         mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
 154         mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
 155 }
 156
 157 static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
 158 {
 159         char spad_pl[MLXSW_REG_SPAD_LEN];
 160         int err;
 161
 162         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
 163         if (err)
 164                 return err;
 165         mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
 166         return 0;
 167 }
 168
 169 static int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
 170 {
 171         struct mlxsw_resources *resources;
 172         int i;
 173
 174         resources = mlxsw_core_resources_get(mlxsw_sp->core);
 175         if (!resources->max_span_valid)
 176                 return -EIO;
 177
 178         mlxsw_sp->span.entries_count = resources->max_span;
 179         mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
 180                                          sizeof(struct mlxsw_sp_span_entry),
 181                                          GFP_KERNEL);
 182         if (!mlxsw_sp->span.entries)
 183                 return -ENOMEM;
 184
 185         for (i = 0; i < mlxsw_sp->span.entries_count; i++)
 186                 INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);
 187
 188         return 0;
 189 }
 190
 191 static void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
 192 {
 193         int i;
 194
 195         for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
 196                 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
 197
 198                 WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
 199         }
 200         kfree(mlxsw_sp->span.entries);
 201 }
 202
 203 static struct mlxsw_sp_span_entry *
 204 mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
 205 {
 206         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 207         struct mlxsw_sp_span_entry *span_entry;
 208         char mpat_pl[MLXSW_REG_MPAT_LEN];
 209         u8 local_port = port->local_port;
 210         int index;
 211         int i;
 212         int err;
 213
 214         /* find a free entry to use */
 215         index = -1;
 216         for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
 217                 if (!mlxsw_sp->span.entries[i].used) {
 218                         index = i;
 219                         span_entry = &mlxsw_sp->span.entries[i];
 220                         break;
 221                 }
 222         }
 223         if (index < 0)
 224                 return NULL;
 225
 226         /* create a new port analayzer entry for local_port */
 227         mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
 228         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
 229         if (err)
 230                 return NULL;
 231
 232         span_entry->used = true;
 233         span_entry->id = index;
 234         span_entry->ref_count = 0;
 235         span_entry->local_port = local_port;
 236         return span_entry;
 237 }
 238
 239 static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
 240                                         struct mlxsw_sp_span_entry *span_entry)
 241 {
 242         u8 local_port = span_entry->local_port;
 243         char mpat_pl[MLXSW_REG_MPAT_LEN];
 244         int pa_id = span_entry->id;
 245
 246         mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
 247         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
 248         span_entry->used = false;
 249 }
 250
 251 struct mlxsw_sp_span_entry *mlxsw_sp_span_entry_find(struct mlxsw_sp_port *port)
 252 {
 253         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 254         int i;
 255
 256         for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
 257                 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
 258
 259                 if (curr->used && curr->local_port == port->local_port)
 260                         return curr;
 261         }
 262         return NULL;
 263 }
 264
 265 struct mlxsw_sp_span_entry *mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
 266 {
 267         struct mlxsw_sp_span_entry *span_entry;
 268
 269         span_entry = mlxsw_sp_span_entry_find(port);
 270         if (span_entry) {
 271                 span_entry->ref_count++;
 272                 return span_entry;
 273         }
 274
 275         return mlxsw_sp_span_entry_create(port);
 276 }
 277
 278 static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
 279                                    struct mlxsw_sp_span_entry *span_entry)
 280 {
 281         if (--span_entry->ref_count == 0)
 282                 mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
 283         return 0;
 284 }
 285
 286 static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
 287 {
 288         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 289         struct mlxsw_sp_span_inspected_port *p;
 290         int i;
 291
 292         for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
 293                 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
 294
 295                 list_for_each_entry(p, &curr->bound_ports_list, list)
 296                         if (p->local_port == port->local_port &&
 297                             p->type == MLXSW_SP_SPAN_EGRESS)
 298                                 return true;
 299         }
 300
 301         return false;
 302 }
 303
 304 static int mlxsw_sp_span_mtu_to_buffsize(int mtu)
 305 {
 306         return MLXSW_SP_BYTES_TO_CELLS(mtu * 5 / 2) + 1;
 307 }
 308
 309 static int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
 310 {
 311         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 312         char sbib_pl[MLXSW_REG_SBIB_LEN];
 313         int err;
 314
 315         /* If port is egress mirrored, the shared buffer size should be
 316          * updated according to the mtu value
 317          */
 318         if (mlxsw_sp_span_is_egress_mirror(port)) {
 319                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
 320                                     mlxsw_sp_span_mtu_to_buffsize(mtu));
 321                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 322                 if (err) {
 323                         netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
 324                         return err;
 325                 }
 326         }
 327
 328         return 0;
 329 }
 330
 331 static struct mlxsw_sp_span_inspected_port *
 332 mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
 333                                     struct mlxsw_sp_span_entry *span_entry)
 334 {
 335         struct mlxsw_sp_span_inspected_port *p;
 336
 337         list_for_each_entry(p, &span_entry->bound_ports_list, list)
 338                 if (port->local_port == p->local_port)
 339                         return p;
 340         return NULL;
 341 }
 342
 343 static int
 344 mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
 345                                   struct mlxsw_sp_span_entry *span_entry,
 346                                   enum mlxsw_sp_span_type type)
 347 {
 348         struct mlxsw_sp_span_inspected_port *inspected_port;
 349         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 350         char mpar_pl[MLXSW_REG_MPAR_LEN];
 351         char sbib_pl[MLXSW_REG_SBIB_LEN];
 352         int pa_id = span_entry->id;
 353         int err;
 354
 355         /* if it is an egress SPAN, bind a shared buffer to it */
 356         if (type == MLXSW_SP_SPAN_EGRESS) {
 357                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
 358                                     mlxsw_sp_span_mtu_to_buffsize(port->dev->mtu));
 359                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 360                 if (err) {
 361                         netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
 362                         return err;
 363                 }
 364         }
 365
 366         /* bind the port to the SPAN entry */
 367         mlxsw_reg_mpar_pack(mpar_pl, port->local_port, type, true, pa_id);
 368         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
 369         if (err)
 370                 goto err_mpar_reg_write;
 371
 372         inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
 373         if (!inspected_port) {
 374                 err = -ENOMEM;
 375                 goto err_inspected_port_alloc;
 376         }
 377         inspected_port->local_port = port->local_port;
 378         inspected_port->type = type;
 379         list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);
 380
 381         return 0;
 382
 383 err_mpar_reg_write:
 384 err_inspected_port_alloc:
 385         if (type == MLXSW_SP_SPAN_EGRESS) {
 386                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
 387                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 388         }
 389         return err;
 390 }
 391
 392 static void
 393 mlxsw_sp_span_inspected_port_unbind(struct mlxsw_sp_port *port,
 394                                     struct mlxsw_sp_span_entry *span_entry,
 395                                     enum mlxsw_sp_span_type type)
 396 {
 397         struct mlxsw_sp_span_inspected_port *inspected_port;
 398         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 399         char mpar_pl[MLXSW_REG_MPAR_LEN];
 400         char sbib_pl[MLXSW_REG_SBIB_LEN];
 401         int pa_id = span_entry->id;
 402
 403         inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
 404         if (!inspected_port)
 405                 return;
 406
 407         /* remove the inspected port */
 408         mlxsw_reg_mpar_pack(mpar_pl, port->local_port, type, false, pa_id);
 409         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
 410
 411         /* remove the SBIB buffer if it was egress SPAN */
 412         if (type == MLXSW_SP_SPAN_EGRESS) {
 413                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
 414                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 415         }
 416
 417         mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
 418
 419         list_del(&inspected_port->list);
 420         kfree(inspected_port);
 421 }
 422
 423 static int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
 424                                     struct mlxsw_sp_port *to,
 425                                     enum mlxsw_sp_span_type type)
 426 {
 427         struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
 428         struct mlxsw_sp_span_entry *span_entry;
 429         int err;
 430
 431         span_entry = mlxsw_sp_span_entry_get(to);
 432         if (!span_entry)
 433                 return -ENOENT;
 434
 435         netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
 436                    span_entry->id);
 437
 438         err = mlxsw_sp_span_inspected_port_bind(from, span_entry, type);
 439         if (err)
 440                 goto err_port_bind;
 441
 442         return 0;
 443
 444 err_port_bind:
 445         mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
 446         return err;
 447 }
 448
 449 static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from,
 450                                         struct mlxsw_sp_port *to,
 451                                         enum mlxsw_sp_span_type type)
 452 {
 453         struct mlxsw_sp_span_entry *span_entry;
 454
 455         span_entry = mlxsw_sp_span_entry_find(to);
 456         if (!span_entry) {
 457                 netdev_err(from->dev, "no span entry found\n");
 458                 return;
 459         }
 460
 461         netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
 462                    span_entry->id);
 463         mlxsw_sp_span_inspected_port_unbind(from, span_entry, type);
 464 }
 465
 466 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
 467                                           bool is_up)
 468 {
 469         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 470         char paos_pl[MLXSW_REG_PAOS_LEN];
 471
 472         mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
 473                             is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
 474                             MLXSW_PORT_ADMIN_STATUS_DOWN);
 475         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
 476 }
 477
 478 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
 479                                       unsigned char *addr)
 480 {
 481         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 482         char ppad_pl[MLXSW_REG_PPAD_LEN];
 483
 484         mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
 485         mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
 486         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
 487 }
 488
 489 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
 490 {
 491         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 492         unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
 493
 494         ether_addr_copy(addr, mlxsw_sp->base_mac);
 495         addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
 496         return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
 497 }
 498
 499 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
 500 {
 501         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 502         char pmtu_pl[MLXSW_REG_PMTU_LEN];
 503         int max_mtu;
 504         int err;
 505
 506         mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
 507         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
 508         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 509         if (err)
 510                 return err;
 511         max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
 512
 513         if (mtu > max_mtu)
 514                 return -EINVAL;
 515
 516         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
 517         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 518 }
 519
 520 static int __mlxsw_sp_port_swid_set(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 521                                     u8 swid)
 522 {
 523         char pspa_pl[MLXSW_REG_PSPA_LEN];
 524
 525         mlxsw_reg_pspa_pack(pspa_pl, swid, local_port);
 526         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
 527 }
 528
 529 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
 530 {
 531         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 532
 533         return __mlxsw_sp_port_swid_set(mlxsw_sp, mlxsw_sp_port->local_port,
 534                                         swid);
 535 }
 536
 537 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
 538                                      bool enable)
 539 {
 540         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 541         char svpe_pl[MLXSW_REG_SVPE_LEN];
 542
 543         mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
 544         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
 545 }
 546
 547 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 548                                  enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
 549                                  u16 vid)
 550 {
 551         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 552         char svfa_pl[MLXSW_REG_SVFA_LEN];
 553
 554         mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
 555                             fid, vid);
 556         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 557 }
 558
 559 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 560                                           u16 vid, bool learn_enable)
 561 {
 562         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 563         char *spvmlr_pl;
 564         int err;
 565
 566         spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
 567         if (!spvmlr_pl)
 568                 return -ENOMEM;
 569         mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
 570                               learn_enable);
 571         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
 572         kfree(spvmlr_pl);
 573         return err;
 574 }
 575
 576 static int
 577 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
 578 {
 579         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 580         char sspr_pl[MLXSW_REG_SSPR_LEN];
 581
 582         mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
 583         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
 584 }
 585
 586 static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
 587                                          u8 local_port, u8 *p_module,
 588                                          u8 *p_width, u8 *p_lane)
 589 {
 590         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 591         int err;
 592
 593         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 594         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 595         if (err)
 596                 return err;
 597         *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
 598         *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
 599         *p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
 600         return 0;
 601 }
 602
 603 static int mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 604                                     u8 module, u8 width, u8 lane)
 605 {
 606         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 607         int i;
 608
 609         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 610         mlxsw_reg_pmlp_width_set(pmlp_pl, width);
 611         for (i = 0; i < width; i++) {
 612                 mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
 613                 mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i);  /* Rx & Tx */
 614         }
 615
 616         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 617 }
 618
 619 static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 620 {
 621         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 622
 623         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 624         mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
 625         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 626 }
 627
 628 static int mlxsw_sp_port_open(struct net_device *dev)
 629 {
 630         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 631         int err;
 632
 633         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
 634         if (err)
 635                 return err;
 636         netif_start_queue(dev);
 637         return 0;
 638 }
 639
 640 static int mlxsw_sp_port_stop(struct net_device *dev)
 641 {
 642         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 643
 644         netif_stop_queue(dev);
 645         return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
 646 }
 647
 648 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
 649                                       struct net_device *dev)
 650 {
 651         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 652         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 653         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
 654         const struct mlxsw_tx_info tx_info = {
 655                 .local_port = mlxsw_sp_port->local_port,
 656                 .is_emad = false,
 657         };
 658         u64 len;
 659         int err;
 660
 661         if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
 662                 return NETDEV_TX_BUSY;
 663
 664         if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
 665                 struct sk_buff *skb_orig = skb;
 666
 667                 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
 668                 if (!skb) {
 669                         this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 670                         dev_kfree_skb_any(skb_orig);
 671                         return NETDEV_TX_OK;
 672                 }
 673         }
 674
 675         if (eth_skb_pad(skb)) {
 676                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 677                 return NETDEV_TX_OK;
 678         }
 679
 680         mlxsw_sp_txhdr_construct(skb, &tx_info);
 681         /* TX header is consumed by HW on the way so we shouldn't count its
 682          * bytes as being sent.
 683          */
 684         len = skb->len - MLXSW_TXHDR_LEN;
 685
 686         /* Due to a race we might fail here because of a full queue. In that
 687          * unlikely case we simply drop the packet.
 688          */
 689         err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
 690
 691         if (!err) {
 692                 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
 693                 u64_stats_update_begin(&pcpu_stats->syncp);
 694                 pcpu_stats->tx_packets++;
 695                 pcpu_stats->tx_bytes += len;
 696                 u64_stats_update_end(&pcpu_stats->syncp);
 697         } else {
 698                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 699                 dev_kfree_skb_any(skb);
 700         }
 701         return NETDEV_TX_OK;
 702 }
 703
 704 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
 705 {
 706 }
 707
 708 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
 709 {
 710         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 711         struct sockaddr *addr = p;
 712         int err;
 713
 714         if (!is_valid_ether_addr(addr->sa_data))
 715                 return -EADDRNOTAVAIL;
 716
 717         err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
 718         if (err)
 719                 return err;
 720         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 721         return 0;
 722 }
 723
 724 static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
 725                                  bool pause_en, bool pfc_en, u16 delay)
 726 {
 727         u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
 728
 729         delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
 730                          MLXSW_SP_PAUSE_DELAY;
 731
 732         if (pause_en || pfc_en)
 733                 mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
 734                                                     pg_size + delay, pg_size);
 735         else
 736                 mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
 737 }
 738
 739 int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
 740                                  u8 *prio_tc, bool pause_en,
 741                                  struct ieee_pfc *my_pfc)
 742 {
 743         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 744         u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
 745         u16 delay = !!my_pfc ? my_pfc->delay : 0;
 746         char pbmc_pl[MLXSW_REG_PBMC_LEN];
 747         int i, j, err;
 748
 749         mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
 750         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
 751         if (err)
 752                 return err;
 753
 754         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 755                 bool configure = false;
 756                 bool pfc = false;
 757
 758                 for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
 759                         if (prio_tc[j] == i) {
 760                                 pfc = pfc_en & BIT(j);
 761                                 configure = true;
 762                                 break;
 763                         }
 764                 }
 765
 766                 if (!configure)
 767                         continue;
 768                 mlxsw_sp_pg_buf_pack(pbmc_pl, i, mtu, pause_en, pfc, delay);
 769         }
 770
 771         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
 772 }
 773
 774 static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
 775                                       int mtu, bool pause_en)
 776 {
 777         u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
 778         bool dcb_en = !!mlxsw_sp_port->dcb.ets;
 779         struct ieee_pfc *my_pfc;
 780         u8 *prio_tc;
 781
 782         prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
 783         my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
 784
 785         return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
 786                                             pause_en, my_pfc);
 787 }
 788
 789 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
 790 {
 791         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 792         bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
 793         int err;
 794
 795         err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
 796         if (err)
 797                 return err;
 798         err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
 799         if (err)
 800                 goto err_span_port_mtu_update;
 801         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
 802         if (err)
 803                 goto err_port_mtu_set;
 804         dev->mtu = mtu;
 805         return 0;
 806
 807 err_port_mtu_set:
 808         mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
 809 err_span_port_mtu_update:
 810         mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
 811         return err;
 812 }
 813
 814 static struct rtnl_link_stats64 *
 815 mlxsw_sp_port_get_stats64(struct net_device *dev,
 816                           struct rtnl_link_stats64 *stats)
 817 {
 818         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 819         struct mlxsw_sp_port_pcpu_stats *p;
 820         u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
 821         u32 tx_dropped = 0;
 822         unsigned int start;
 823         int i;
 824
 825         for_each_possible_cpu(i) {
 826                 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
 827                 do {
 828                         start = u64_stats_fetch_begin_irq(&p->syncp);
 829                         rx_packets      = p->rx_packets;
 830                         rx_bytes        = p->rx_bytes;
 831                         tx_packets      = p->tx_packets;
 832                         tx_bytes        = p->tx_bytes;
 833                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 834
 835                 stats->rx_packets       += rx_packets;
 836                 stats->rx_bytes         += rx_bytes;
 837                 stats->tx_packets       += tx_packets;
 838                 stats->tx_bytes         += tx_bytes;
 839                 /* tx_dropped is u32, updated without syncp protection. */
 840                 tx_dropped      += p->tx_dropped;
 841         }
 842         stats->tx_dropped       = tx_dropped;
 843         return stats;
 844 }
 845
 846 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
 847                            u16 vid_end, bool is_member, bool untagged)
 848 {
 849         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 850         char *spvm_pl;
 851         int err;
 852
 853         spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
 854         if (!spvm_pl)
 855                 return -ENOMEM;
 856
 857         mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
 858                             vid_end, is_member, untagged);
 859         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
 860         kfree(spvm_pl);
 861         return err;
 862 }
 863
 864 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 865 {
 866         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 867         u16 vid, last_visited_vid;
 868         int err;
 869
 870         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 871                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
 872                                                    vid);
 873                 if (err) {
 874                         last_visited_vid = vid;
 875                         goto err_port_vid_to_fid_set;
 876                 }
 877         }
 878
 879         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
 880         if (err) {
 881                 last_visited_vid = VLAN_N_VID;
 882                 goto err_port_vid_to_fid_set;
 883         }
 884
 885         return 0;
 886
 887 err_port_vid_to_fid_set:
 888         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 889                 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
 890                                              vid);
 891         return err;
 892 }
 893
 894 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 895 {
 896         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 897         u16 vid;
 898         int err;
 899
 900         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
 901         if (err)
 902                 return err;
 903
 904         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 905                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
 906                                                    vid, vid);
 907                 if (err)
 908                         return err;
 909         }
 910
 911         return 0;
 912 }
 913
 914 static struct mlxsw_sp_port *
 915 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 916 {
 917         struct mlxsw_sp_port *mlxsw_sp_vport;
 918
 919         mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
 920         if (!mlxsw_sp_vport)
 921                 return NULL;
 922
 923         /* dev will be set correctly after the VLAN device is linked
 924          * with the real device. In case of bridge SELF invocation, dev
 925          * will remain as is.
 926          */
 927         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
 928         mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 929         mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
 930         mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
 931         mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
 932         mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
 933         mlxsw_sp_vport->vport.vid = vid;
 934
 935         list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
 936
 937         return mlxsw_sp_vport;
 938 }
 939
 940 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
 941 {
 942         list_del(&mlxsw_sp_vport->vport.list);
 943         kfree(mlxsw_sp_vport);
 944 }
 945
 946 static int mlxsw_sp_port_add_vid(struct net_device *dev,
 947                                  __be16 __always_unused proto, u16 vid)
 948 {
 949         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 950         struct mlxsw_sp_port *mlxsw_sp_vport;
 951         bool untagged = vid == 1;
 952         int err;
 953
 954         /* VLAN 0 is added to HW filter when device goes up, but it is
 955          * reserved in our case, so simply return.
 956          */
 957         if (!vid)
 958                 return 0;
 959
 960         if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
 961                 return 0;
 962
 963         mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
 964         if (!mlxsw_sp_vport)
 965                 return -ENOMEM;
 966
 967         /* When adding the first VLAN interface on a bridged port we need to
 968          * transition all the active 802.1Q bridge VLANs to use explicit
 969          * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
 970          */
 971         if (list_is_singular(&mlxsw_sp_port->vports_list)) {
 972                 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
 973                 if (err)
 974                         goto err_port_vp_mode_trans;
 975         }
 976
 977         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
 978         if (err)
 979                 goto err_port_vid_learning_set;
 980
 981         err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
 982         if (err)
 983                 goto err_port_add_vid;
 984
 985         return 0;
 986
 987 err_port_add_vid:
 988         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
 989 err_port_vid_learning_set:
 990         if (list_is_singular(&mlxsw_sp_port->vports_list))
 991                 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
 992 err_port_vp_mode_trans:
 993         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
 994         return err;
 995 }
 996
 997 static int mlxsw_sp_port_kill_vid(struct net_device *dev,
 998                                   __be16 __always_unused proto, u16 vid)
 999 {
1000         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1001         struct mlxsw_sp_port *mlxsw_sp_vport;
1002         struct mlxsw_sp_fid *f;
1003
1004         /* VLAN 0 is removed from HW filter when device goes down, but
1005          * it is reserved in our case, so simply return.
1006          */
1007         if (!vid)
1008                 return 0;
1009
1010         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
1011         if (WARN_ON(!mlxsw_sp_vport))
1012                 return 0;
1013
1014         mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
1015
1016         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
1017
1018         /* Drop FID reference. If this was the last reference the
1019          * resources will be freed.
1020          */
1021         f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
1022         if (f && !WARN_ON(!f->leave))
1023                 f->leave(mlxsw_sp_vport);
1024
1025         /* When removing the last VLAN interface on a bridged port we need to
1026          * transition all active 802.1Q bridge VLANs to use VID to FID
1027          * mappings and set port's mode to VLAN mode.
1028          */
1029         if (list_is_singular(&mlxsw_sp_port->vports_list))
1030                 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
1031
1032         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
1033
1034         return 0;
1035 }
1036
1037 static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
1038                                             size_t len)
1039 {
1040         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1041         u8 module = mlxsw_sp_port->mapping.module;
1042         u8 width = mlxsw_sp_port->mapping.width;
1043         u8 lane = mlxsw_sp_port->mapping.lane;
1044         int err;
1045
1046         if (!mlxsw_sp_port->split)
1047                 err = snprintf(name, len, "p%d", module + 1);
1048         else
1049                 err = snprintf(name, len, "p%ds%d", module + 1,
1050                                lane / width);
1051
1052         if (err >= len)
1053                 return -EINVAL;
1054
1055         return 0;
1056 }
1057
1058 static struct mlxsw_sp_port_mall_tc_entry *
1059 mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
1060                                 unsigned long cookie) {
1061         struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1062
1063         list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
1064                 if (mall_tc_entry->cookie == cookie)
1065                         return mall_tc_entry;
1066
1067         return NULL;
1068 }
1069
1070 static int
1071 mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
1072                                       struct tc_cls_matchall_offload *cls,
1073                                       const struct tc_action *a,
1074                                       bool ingress)
1075 {
1076         struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1077         struct net *net = dev_net(mlxsw_sp_port->dev);
1078         enum mlxsw_sp_span_type span_type;
1079         struct mlxsw_sp_port *to_port;
1080         struct net_device *to_dev;
1081         int ifindex;
1082         int err;
1083
1084         ifindex = tcf_mirred_ifindex(a);
1085         to_dev = __dev_get_by_index(net, ifindex);
1086         if (!to_dev) {
1087                 netdev_err(mlxsw_sp_port->dev, "Could not find requested device\n");
1088                 return -EINVAL;
1089         }
1090
1091         if (!mlxsw_sp_port_dev_check(to_dev)) {
1092                 netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
1093                 return -ENOTSUPP;
1094         }
1095         to_port = netdev_priv(to_dev);
1096
1097         mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
1098         if (!mall_tc_entry)
1099                 return -ENOMEM;
1100
1101         mall_tc_entry->cookie = cls->cookie;
1102         mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
1103         mall_tc_entry->mirror.to_local_port = to_port->local_port;
1104         mall_tc_entry->mirror.ingress = ingress;
1105         list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
1106
1107         span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
1108         err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
1109         if (err)
1110                 goto err_mirror_add;
1111         return 0;
1112
1113 err_mirror_add:
1114         list_del(&mall_tc_entry->list);
1115         kfree(mall_tc_entry);
1116         return err;
1117 }
1118
1119 static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
1120                                           __be16 protocol,
1121                                           struct tc_cls_matchall_offload *cls,
1122                                           bool ingress)
1123 {
1124         const struct tc_action *a;
1125         LIST_HEAD(actions);
1126         int err;
1127
1128         if (!tc_single_action(cls->exts)) {
1129                 netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
1130                 return -ENOTSUPP;
1131         }
1132
1133         tcf_exts_to_list(cls->exts, &actions);
1134         list_for_each_entry(a, &actions, list) {
1135                 if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
1136                         return -ENOTSUPP;
1137
1138                 err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
1139                                                             a, ingress);
1140                 if (err)
1141                         return err;
1142         }
1143
1144         return 0;
1145 }
1146
1147 static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
1148                                            struct tc_cls_matchall_offload *cls)
1149 {
1150         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1151         struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1152         enum mlxsw_sp_span_type span_type;
1153         struct mlxsw_sp_port *to_port;
1154
1155         mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
1156                                                         cls->cookie);
1157         if (!mall_tc_entry) {
1158                 netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
1159                 return;
1160         }
1161
1162         switch (mall_tc_entry->type) {
1163         case MLXSW_SP_PORT_MALL_MIRROR:
1164                 to_port = mlxsw_sp->ports[mall_tc_entry->mirror.to_local_port];
1165                 span_type = mall_tc_entry->mirror.ingress ?
1166                                 MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
1167
1168                 mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
1169                 break;
1170         default:
1171                 WARN_ON(1);
1172         }
1173
1174         list_del(&mall_tc_entry->list);
1175         kfree(mall_tc_entry);
1176 }
1177
1178 static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
1179                              __be16 proto, struct tc_to_netdev *tc)
1180 {
1181         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1182         bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);
1183
1184         if (tc->type == TC_SETUP_MATCHALL) {
1185                 switch (tc->cls_mall->command) {
1186                 case TC_CLSMATCHALL_REPLACE:
1187                         return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port,
1188                                                               proto,
1189                                                               tc->cls_mall,
1190                                                               ingress);
1191                 case TC_CLSMATCHALL_DESTROY:
1192                         mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port,
1193                                                        tc->cls_mall);
1194                         return 0;
1195                 default:
1196                         return -EINVAL;
1197                 }
1198         }
1199
1200         return -ENOTSUPP;
1201 }
1202
1203 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
1204         .ndo_open               = mlxsw_sp_port_open,
1205         .ndo_stop               = mlxsw_sp_port_stop,
1206         .ndo_start_xmit         = mlxsw_sp_port_xmit,
1207         .ndo_setup_tc           = mlxsw_sp_setup_tc,
1208         .ndo_set_rx_mode        = mlxsw_sp_set_rx_mode,
1209         .ndo_set_mac_address    = mlxsw_sp_port_set_mac_address,
1210         .ndo_change_mtu         = mlxsw_sp_port_change_mtu,
1211         .ndo_get_stats64        = mlxsw_sp_port_get_stats64,
1212         .ndo_vlan_rx_add_vid    = mlxsw_sp_port_add_vid,
1213         .ndo_vlan_rx_kill_vid   = mlxsw_sp_port_kill_vid,
1214         .ndo_neigh_construct    = mlxsw_sp_router_neigh_construct,
1215         .ndo_neigh_destroy      = mlxsw_sp_router_neigh_destroy,
1216         .ndo_fdb_add            = switchdev_port_fdb_add,
1217         .ndo_fdb_del            = switchdev_port_fdb_del,
1218         .ndo_fdb_dump           = switchdev_port_fdb_dump,
1219         .ndo_bridge_setlink     = switchdev_port_bridge_setlink,
1220         .ndo_bridge_getlink     = switchdev_port_bridge_getlink,
1221         .ndo_bridge_dellink     = switchdev_port_bridge_dellink,
1222         .ndo_get_phys_port_name = mlxsw_sp_port_get_phys_port_name,
1223 };
1224
1225 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
1226                                       struct ethtool_drvinfo *drvinfo)
1227 {
1228         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1229         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1230
1231         strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
1232         strlcpy(drvinfo->version, mlxsw_sp_driver_version,
1233                 sizeof(drvinfo->version));
1234         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
1235                  "%d.%d.%d",
1236                  mlxsw_sp->bus_info->fw_rev.major,
1237                  mlxsw_sp->bus_info->fw_rev.minor,
1238                  mlxsw_sp->bus_info->fw_rev.subminor);
1239         strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
1240                 sizeof(drvinfo->bus_info));
1241 }
1242
1243 static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
1244                                          struct ethtool_pauseparam *pause)
1245 {
1246         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1247
1248         pause->rx_pause = mlxsw_sp_port->link.rx_pause;
1249         pause->tx_pause = mlxsw_sp_port->link.tx_pause;
1250 }
1251
1252 static int mlxsw_sp_port_pause_set(struct mlxsw_sp_port *mlxsw_sp_port,
1253                                    struct ethtool_pauseparam *pause)
1254 {
1255         char pfcc_pl[MLXSW_REG_PFCC_LEN];
1256
1257         mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
1258         mlxsw_reg_pfcc_pprx_set(pfcc_pl, pause->rx_pause);
1259         mlxsw_reg_pfcc_pptx_set(pfcc_pl, pause->tx_pause);
1260
1261         return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
1262                                pfcc_pl);
1263 }
1264
1265 static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
1266                                         struct ethtool_pauseparam *pause)
1267 {
1268         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1269         bool pause_en = pause->tx_pause || pause->rx_pause;
1270         int err;
1271
1272         if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
1273                 netdev_err(dev, "PFC already enabled on port\n");
1274                 return -EINVAL;
1275         }
1276
1277         if (pause->autoneg) {
1278                 netdev_err(dev, "PAUSE frames autonegotiation isn't supported\n");
1279                 return -EINVAL;
1280         }
1281
1282         err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
1283         if (err) {
1284                 netdev_err(dev, "Failed to configure port's headroom\n");
1285                 return err;
1286         }
1287
1288         err = mlxsw_sp_port_pause_set(mlxsw_sp_port, pause);
1289         if (err) {
1290                 netdev_err(dev, "Failed to set PAUSE parameters\n");
1291                 goto err_port_pause_configure;
1292         }
1293
1294         mlxsw_sp_port->link.rx_pause = pause->rx_pause;
1295         mlxsw_sp_port->link.tx_pause = pause->tx_pause;
1296
1297         return 0;
1298
1299 err_port_pause_configure:
1300         pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
1301         mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
1302         return err;
1303 }
1304
1305 struct mlxsw_sp_port_hw_stats {
1306         char str[ETH_GSTRING_LEN];
1307         u64 (*getter)(char *payload);
1308 };
1309
1310 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
1311         {
1312                 .str = "a_frames_transmitted_ok",
1313                 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
1314         },
1315         {
1316                 .str = "a_frames_received_ok",
1317                 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
1318         },
1319         {
1320                 .str = "a_frame_check_sequence_errors",
1321                 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
1322         },
1323         {
1324                 .str = "a_alignment_errors",
1325                 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
1326         },
1327         {
1328                 .str = "a_octets_transmitted_ok",
1329                 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
1330         },
1331         {
1332                 .str = "a_octets_received_ok",
1333                 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
1334         },
1335         {
1336                 .str = "a_multicast_frames_xmitted_ok",
1337                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
1338         },
1339         {
1340                 .str = "a_broadcast_frames_xmitted_ok",
1341                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
1342         },
1343         {
1344                 .str = "a_multicast_frames_received_ok",
1345                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
1346         },
1347         {
1348                 .str = "a_broadcast_frames_received_ok",
1349                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
1350         },
1351         {
1352                 .str = "a_in_range_length_errors",
1353                 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
1354         },
1355         {
1356                 .str = "a_out_of_range_length_field",
1357                 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
1358         },
1359         {
1360                 .str = "a_frame_too_long_errors",
1361                 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
1362         },
1363         {
1364                 .str = "a_symbol_error_during_carrier",
1365                 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
1366         },
1367         {
1368                 .str = "a_mac_control_frames_transmitted",
1369                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
1370         },
1371         {
1372                 .str = "a_mac_control_frames_received",
1373                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
1374         },
1375         {
1376                 .str = "a_unsupported_opcodes_received",
1377                 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
1378         },
1379         {
1380                 .str = "a_pause_mac_ctrl_frames_received",
1381                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
1382         },
1383         {
1384                 .str = "a_pause_mac_ctrl_frames_xmitted",
1385                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
1386         },
1387 };
1388
1389 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
1390
1391 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
1392         {
1393                 .str = "rx_octets_prio",
1394                 .getter = mlxsw_reg_ppcnt_rx_octets_get,
1395         },
1396         {
1397                 .str = "rx_frames_prio",
1398                 .getter = mlxsw_reg_ppcnt_rx_frames_get,
1399         },
1400         {
1401                 .str = "tx_octets_prio",
1402                 .getter = mlxsw_reg_ppcnt_tx_octets_get,
1403         },
1404         {
1405                 .str = "tx_frames_prio",
1406                 .getter = mlxsw_reg_ppcnt_tx_frames_get,
1407         },
1408         {
1409                 .str = "rx_pause_prio",
1410                 .getter = mlxsw_reg_ppcnt_rx_pause_get,
1411         },
1412         {
1413                 .str = "rx_pause_duration_prio",
1414                 .getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
1415         },
1416         {
1417                 .str = "tx_pause_prio",
1418                 .getter = mlxsw_reg_ppcnt_tx_pause_get,
1419         },
1420         {
1421                 .str = "tx_pause_duration_prio",
1422                 .getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
1423         },
1424 };
1425
1426 #define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)
1427
1428 static u64 mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get(char *ppcnt_pl)
1429 {
1430         u64 transmit_queue = mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
1431
1432         return MLXSW_SP_CELLS_TO_BYTES(transmit_queue);
1433 }
1434
1435 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
1436         {
1437                 .str = "tc_transmit_queue_tc",
1438                 .getter = mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get,
1439         },
1440         {
1441                 .str = "tc_no_buffer_discard_uc_tc",
1442                 .getter = mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get,
1443         },
1444 };
1445
1446 #define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)
1447
1448 #define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
1449                                          (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
1450                                           MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
1451                                          IEEE_8021QAZ_MAX_TCS)
1452
1453 static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
1454 {
1455         int i;
1456
1457         for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
1458                 snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
1459                          mlxsw_sp_port_hw_prio_stats[i].str, prio);
1460                 *p += ETH_GSTRING_LEN;
1461         }
1462 }
1463
1464 static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
1465 {
1466         int i;
1467
1468         for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
1469                 snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
1470                          mlxsw_sp_port_hw_tc_stats[i].str, tc);
1471                 *p += ETH_GSTRING_LEN;
1472         }
1473 }
1474
1475 static void mlxsw_sp_port_get_strings(struct net_device *dev,
1476                                       u32 stringset, u8 *data)
1477 {
1478         u8 *p = data;
1479         int i;
1480
1481         switch (stringset) {
1482         case ETH_SS_STATS:
1483                 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
1484                         memcpy(p, mlxsw_sp_port_hw_stats[i].str,
1485                                ETH_GSTRING_LEN);
1486                         p += ETH_GSTRING_LEN;
1487                 }
1488
1489                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1490                         mlxsw_sp_port_get_prio_strings(&p, i);
1491
1492                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1493                         mlxsw_sp_port_get_tc_strings(&p, i);
1494
1495                 break;
1496         }
1497 }
1498
1499 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
1500                                      enum ethtool_phys_id_state state)
1501 {
1502         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1503         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1504         char mlcr_pl[MLXSW_REG_MLCR_LEN];
1505         bool active;
1506
1507         switch (state) {
1508         case ETHTOOL_ID_ACTIVE:
1509                 active = true;
1510                 break;
1511         case ETHTOOL_ID_INACTIVE:
1512                 active = false;
1513                 break;
1514         default:
1515                 return -EOPNOTSUPP;
1516         }
1517
1518         mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
1519         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
1520 }
1521
1522 static int
1523 mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
1524                                int *p_len, enum mlxsw_reg_ppcnt_grp grp)
1525 {
1526         switch (grp) {
1527         case  MLXSW_REG_PPCNT_IEEE_8023_CNT:
1528                 *p_hw_stats = mlxsw_sp_port_hw_stats;
1529                 *p_len = MLXSW_SP_PORT_HW_STATS_LEN;
1530                 break;
1531         case MLXSW_REG_PPCNT_PRIO_CNT:
1532                 *p_hw_stats = mlxsw_sp_port_hw_prio_stats;
1533                 *p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
1534                 break;
1535         case MLXSW_REG_PPCNT_TC_CNT:
1536                 *p_hw_stats = mlxsw_sp_port_hw_tc_stats;
1537                 *p_len = MLXSW_SP_PORT_HW_TC_STATS_LEN;
1538                 break;
1539         default:
1540                 WARN_ON(1);
1541                 return -ENOTSUPP;
1542         }
1543         return 0;
1544 }
1545
1546 static void __mlxsw_sp_port_get_stats(struct net_device *dev,
1547                                       enum mlxsw_reg_ppcnt_grp grp, int prio,
1548                                       u64 *data, int data_index)
1549 {
1550         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1551         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1552         struct mlxsw_sp_port_hw_stats *hw_stats;
1553         char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1554         int i, len;
1555         int err;
1556
1557         err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
1558         if (err)
1559                 return;
1560         mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
1561         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1562         for (i = 0; i < len; i++)
1563                 data[data_index + i] = !err ? hw_stats[i].getter(ppcnt_pl) : 0;
1564 }
1565
1566 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1567                                     struct ethtool_stats *stats, u64 *data)
1568 {
1569         int i, data_index = 0;
1570
1571         /* IEEE 802.3 Counters */
1572         __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
1573                                   data, data_index);
1574         data_index = MLXSW_SP_PORT_HW_STATS_LEN;
1575
1576         /* Per-Priority Counters */
1577         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1578                 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
1579                                           data, data_index);
1580                 data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
1581         }
1582
1583         /* Per-TC Counters */
1584         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1585                 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
1586                                           data, data_index);
1587                 data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;
1588         }
1589 }
1590
1591 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1592 {
1593         switch (sset) {
1594         case ETH_SS_STATS:
1595                 return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
1596         default:
1597                 return -EOPNOTSUPP;
1598         }
1599 }
1600
1601 struct mlxsw_sp_port_link_mode {
1602         u32 mask;
1603         u32 supported;
1604         u32 advertised;
1605         u32 speed;
1606 };
1607
1608 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1609         {
1610                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1611                 .supported      = SUPPORTED_100baseT_Full,
1612                 .advertised     = ADVERTISED_100baseT_Full,
1613                 .speed          = 100,
1614         },
1615         {
1616                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1617                 .speed          = 100,
1618         },
1619         {
1620                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1621                                   MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1622                 .supported      = SUPPORTED_1000baseKX_Full,
1623                 .advertised     = ADVERTISED_1000baseKX_Full,
1624                 .speed          = 1000,
1625         },
1626         {
1627                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1628                 .supported      = SUPPORTED_10000baseT_Full,
1629                 .advertised     = ADVERTISED_10000baseT_Full,
1630                 .speed          = 10000,
1631         },
1632         {
1633                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1634                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1635                 .supported      = SUPPORTED_10000baseKX4_Full,
1636                 .advertised     = ADVERTISED_10000baseKX4_Full,
1637                 .speed          = 10000,
1638         },
1639         {
1640                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1641                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1642                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1643                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1644                 .supported      = SUPPORTED_10000baseKR_Full,
1645                 .advertised     = ADVERTISED_10000baseKR_Full,
1646                 .speed          = 10000,
1647         },
1648         {
1649                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1650                 .supported      = SUPPORTED_20000baseKR2_Full,
1651                 .advertised     = ADVERTISED_20000baseKR2_Full,
1652                 .speed          = 20000,
1653         },
1654         {
1655                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1656                 .supported      = SUPPORTED_40000baseCR4_Full,
1657                 .advertised     = ADVERTISED_40000baseCR4_Full,
1658                 .speed          = 40000,
1659         },
1660         {
1661                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1662                 .supported      = SUPPORTED_40000baseKR4_Full,
1663                 .advertised     = ADVERTISED_40000baseKR4_Full,
1664                 .speed          = 40000,
1665         },
1666         {
1667                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1668                 .supported      = SUPPORTED_40000baseSR4_Full,
1669                 .advertised     = ADVERTISED_40000baseSR4_Full,
1670                 .speed          = 40000,
1671         },
1672         {
1673                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1674                 .supported      = SUPPORTED_40000baseLR4_Full,
1675                 .advertised     = ADVERTISED_40000baseLR4_Full,
1676                 .speed          = 40000,
1677         },
1678         {
1679                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1680                                   MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1681                                   MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1682                 .speed          = 25000,
1683         },
1684         {
1685                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1686                                   MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1687                                   MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1688                 .speed          = 50000,
1689         },
1690         {
1691                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1692                 .supported      = SUPPORTED_56000baseKR4_Full,
1693                 .advertised     = ADVERTISED_56000baseKR4_Full,
1694                 .speed          = 56000,
1695         },
1696         {
1697                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1698                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1699                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1700                                   MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1701                 .speed          = 100000,
1702         },
1703 };
1704
1705 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1706
1707 static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1708 {
1709         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1710                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1711                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1712                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1713                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1714                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1715                 return SUPPORTED_FIBRE;
1716
1717         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1718                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1719                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1720                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1721                               MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1722                 return SUPPORTED_Backplane;
1723         return 0;
1724 }
1725
1726 static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1727 {
1728         u32 modes = 0;
1729         int i;
1730
1731         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1732                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1733                         modes |= mlxsw_sp_port_link_mode[i].supported;
1734         }
1735         return modes;
1736 }
1737
1738 static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1739 {
1740         u32 modes = 0;
1741         int i;
1742
1743         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1744                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1745                         modes |= mlxsw_sp_port_link_mode[i].advertised;
1746         }
1747         return modes;
1748 }
1749
1750 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1751                                             struct ethtool_cmd *cmd)
1752 {
1753         u32 speed = SPEED_UNKNOWN;
1754         u8 duplex = DUPLEX_UNKNOWN;
1755         int i;
1756
1757         if (!carrier_ok)
1758                 goto out;
1759
1760         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1761                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1762                         speed = mlxsw_sp_port_link_mode[i].speed;
1763                         duplex = DUPLEX_FULL;
1764                         break;
1765                 }
1766         }
1767 out:
1768         ethtool_cmd_speed_set(cmd, speed);
1769         cmd->duplex = duplex;
1770 }
1771
1772 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1773 {
1774         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1775                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1776                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1777                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1778                 return PORT_FIBRE;
1779
1780         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1781                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1782                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1783                 return PORT_DA;
1784
1785         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1786                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1787                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1788                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1789                 return PORT_NONE;
1790
1791         return PORT_OTHER;
1792 }
1793
1794 static int mlxsw_sp_port_get_settings(struct net_device *dev,
1795                                       struct ethtool_cmd *cmd)
1796 {
1797         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1798         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1799         char ptys_pl[MLXSW_REG_PTYS_LEN];
1800         u32 eth_proto_cap;
1801         u32 eth_proto_admin;
1802         u32 eth_proto_oper;
1803         int err;
1804
1805         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1806         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1807         if (err) {
1808                 netdev_err(dev, "Failed to get proto");
1809                 return err;
1810         }
1811         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1812                               &eth_proto_admin, &eth_proto_oper);
1813
1814         cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1815                          mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1816                          SUPPORTED_Pause | SUPPORTED_Asym_Pause |
1817                          SUPPORTED_Autoneg;
1818         cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1819         mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1820                                         eth_proto_oper, cmd);
1821
1822         eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1823         cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1824         cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1825
1826         cmd->transceiver = XCVR_INTERNAL;
1827         return 0;
1828 }
1829
1830 static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1831 {
1832         u32 ptys_proto = 0;
1833         int i;
1834
1835         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1836                 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1837                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1838         }
1839         return ptys_proto;
1840 }
1841
1842 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1843 {
1844         u32 ptys_proto = 0;
1845         int i;
1846
1847         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1848                 if (speed == mlxsw_sp_port_link_mode[i].speed)
1849                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1850         }
1851         return ptys_proto;
1852 }
1853
1854 static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
1855 {
1856         u32 ptys_proto = 0;
1857         int i;
1858
1859         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1860                 if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
1861                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1862         }
1863         return ptys_proto;
1864 }
1865
1866 static int mlxsw_sp_port_set_settings(struct net_device *dev,
1867                                       struct ethtool_cmd *cmd)
1868 {
1869         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1870         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1871         char ptys_pl[MLXSW_REG_PTYS_LEN];
1872         u32 speed;
1873         u32 eth_proto_new;
1874         u32 eth_proto_cap;
1875         u32 eth_proto_admin;
1876         int err;
1877
1878         speed = ethtool_cmd_speed(cmd);
1879
1880         eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1881                 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1882                 mlxsw_sp_to_ptys_speed(speed);
1883
1884         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1885         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1886         if (err) {
1887                 netdev_err(dev, "Failed to get proto");
1888                 return err;
1889         }
1890         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1891
1892         eth_proto_new = eth_proto_new & eth_proto_cap;
1893         if (!eth_proto_new) {
1894                 netdev_err(dev, "Not supported proto admin requested");
1895                 return -EINVAL;
1896         }
1897         if (eth_proto_new == eth_proto_admin)
1898                 return 0;
1899
1900         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1901         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1902         if (err) {
1903                 netdev_err(dev, "Failed to set proto admin");
1904                 return err;
1905         }
1906
1907         if (!netif_running(dev))
1908                 return 0;
1909
1910         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1911         if (err) {
1912                 netdev_err(dev, "Failed to set admin status");
1913                 return err;
1914         }
1915
1916         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1917         if (err) {
1918                 netdev_err(dev, "Failed to set admin status");
1919                 return err;
1920         }
1921
1922         return 0;
1923 }
1924
1925 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1926         .get_drvinfo            = mlxsw_sp_port_get_drvinfo,
1927         .get_link               = ethtool_op_get_link,
1928         .get_pauseparam         = mlxsw_sp_port_get_pauseparam,
1929         .set_pauseparam         = mlxsw_sp_port_set_pauseparam,
1930         .get_strings            = mlxsw_sp_port_get_strings,
1931         .set_phys_id            = mlxsw_sp_port_set_phys_id,
1932         .get_ethtool_stats      = mlxsw_sp_port_get_stats,
1933         .get_sset_count         = mlxsw_sp_port_get_sset_count,
1934         .get_settings           = mlxsw_sp_port_get_settings,
1935         .set_settings           = mlxsw_sp_port_set_settings,
1936 };
1937
1938 static int
1939 mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
1940 {
1941         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1942         u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
1943         char ptys_pl[MLXSW_REG_PTYS_LEN];
1944         u32 eth_proto_admin;
1945
1946         eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
1947         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port,
1948                             eth_proto_admin);
1949         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1950 }
1951
1952 int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
1953                           enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
1954                           bool dwrr, u8 dwrr_weight)
1955 {
1956         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1957         char qeec_pl[MLXSW_REG_QEEC_LEN];
1958
1959         mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
1960                             next_index);
1961         mlxsw_reg_qeec_de_set(qeec_pl, true);
1962         mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
1963         mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
1964         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
1965 }
1966
1967 int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
1968                                   enum mlxsw_reg_qeec_hr hr, u8 index,
1969                                   u8 next_index, u32 maxrate)
1970 {
1971         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1972         char qeec_pl[MLXSW_REG_QEEC_LEN];
1973
1974         mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
1975                             next_index);
1976         mlxsw_reg_qeec_mase_set(qeec_pl, true);
1977         mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
1978         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
1979 }
1980
1981 int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
1982                               u8 switch_prio, u8 tclass)
1983 {
1984         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1985         char qtct_pl[MLXSW_REG_QTCT_LEN];
1986
1987         mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
1988                             tclass);
1989         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
1990 }
1991
1992 static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
1993 {
1994         int err, i;
1995
1996         /* Setup the elements hierarcy, so that each TC is linked to
1997          * one subgroup, which are all member in the same group.
1998          */
1999         err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2000                                     MLXSW_REG_QEEC_HIERARCY_GROUP, 0, 0, false,
2001                                     0);
2002         if (err)
2003                 return err;
2004         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2005                 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2006                                             MLXSW_REG_QEEC_HIERARCY_SUBGROUP, i,
2007                                             0, false, 0);
2008                 if (err)
2009                         return err;
2010         }
2011         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2012                 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2013                                             MLXSW_REG_QEEC_HIERARCY_TC, i, i,
2014                                             false, 0);
2015                 if (err)
2016                         return err;
2017         }
2018
2019         /* Make sure the max shaper is disabled in all hierarcies that
2020          * support it.
2021          */
2022         err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2023                                             MLXSW_REG_QEEC_HIERARCY_PORT, 0, 0,
2024                                             MLXSW_REG_QEEC_MAS_DIS);
2025         if (err)
2026                 return err;
2027         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2028                 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2029                                                     MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
2030                                                     i, 0,
2031                                                     MLXSW_REG_QEEC_MAS_DIS);
2032                 if (err)
2033                         return err;
2034         }
2035         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2036                 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2037                                                     MLXSW_REG_QEEC_HIERARCY_TC,
2038                                                     i, i,
2039                                                     MLXSW_REG_QEEC_MAS_DIS);
2040                 if (err)
2041                         return err;
2042         }
2043
2044         /* Map all priorities to traffic class 0. */
2045         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2046                 err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
2047                 if (err)
2048                         return err;
2049         }
2050
2051         return 0;
2052 }
2053
2054 static int mlxsw_sp_port_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
2055 {
2056         mlxsw_sp_port->pvid = 1;
2057
2058         return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
2059 }
2060
2061 static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
2062 {
2063         return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
2064 }
2065
2066 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
2067                                 bool split, u8 module, u8 width, u8 lane)
2068 {
2069         struct mlxsw_sp_port *mlxsw_sp_port;
2070         struct net_device *dev;
2071         size_t bytes;
2072         int err;
2073
2074         dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
2075         if (!dev)
2076                 return -ENOMEM;
2077         mlxsw_sp_port = netdev_priv(dev);
2078         mlxsw_sp_port->dev = dev;
2079         mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
2080         mlxsw_sp_port->local_port = local_port;
2081         mlxsw_sp_port->split = split;
2082         mlxsw_sp_port->mapping.module = module;
2083         mlxsw_sp_port->mapping.width = width;
2084         mlxsw_sp_port->mapping.lane = lane;
2085         bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
2086         mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
2087         if (!mlxsw_sp_port->active_vlans) {
2088                 err = -ENOMEM;
2089                 goto err_port_active_vlans_alloc;
2090         }
2091         mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
2092         if (!mlxsw_sp_port->untagged_vlans) {
2093                 err = -ENOMEM;
2094                 goto err_port_untagged_vlans_alloc;
2095         }
2096         INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
2097         INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);
2098
2099         mlxsw_sp_port->pcpu_stats =
2100                 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
2101         if (!mlxsw_sp_port->pcpu_stats) {
2102                 err = -ENOMEM;
2103                 goto err_alloc_stats;
2104         }
2105
2106         dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
2107         dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
2108
2109         err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
2110         if (err) {
2111                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
2112                         mlxsw_sp_port->local_port);
2113                 goto err_port_swid_set;
2114         }
2115
2116         err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
2117         if (err) {
2118                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
2119                         mlxsw_sp_port->local_port);
2120                 goto err_dev_addr_init;
2121         }
2122
2123         netif_carrier_off(dev);
2124
2125         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
2126                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
2127         dev->hw_features |= NETIF_F_HW_TC;
2128
2129         /* Each packet needs to have a Tx header (metadata) on top all other
2130          * headers.
2131          */
2132         dev->hard_header_len += MLXSW_TXHDR_LEN;
2133
2134         err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
2135         if (err) {
2136                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
2137                         mlxsw_sp_port->local_port);
2138                 goto err_port_system_port_mapping_set;
2139         }
2140
2141         err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
2142         if (err) {
2143                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
2144                         mlxsw_sp_port->local_port);
2145                 goto err_port_speed_by_width_set;
2146         }
2147
2148         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
2149         if (err) {
2150                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
2151                         mlxsw_sp_port->local_port);
2152                 goto err_port_mtu_set;
2153         }
2154
2155         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
2156         if (err)
2157                 goto err_port_admin_status_set;
2158
2159         err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
2160         if (err) {
2161                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
2162                         mlxsw_sp_port->local_port);
2163                 goto err_port_buffers_init;
2164         }
2165
2166         err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
2167         if (err) {
2168                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize ETS\n",
2169                         mlxsw_sp_port->local_port);
2170                 goto err_port_ets_init;
2171         }
2172
2173         /* ETS and buffers must be initialized before DCB. */
2174         err = mlxsw_sp_port_dcb_init(mlxsw_sp_port);
2175         if (err) {
2176                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize DCB\n",
2177                         mlxsw_sp_port->local_port);
2178                 goto err_port_dcb_init;
2179         }
2180
2181         err = mlxsw_sp_port_pvid_vport_create(mlxsw_sp_port);
2182         if (err) {
2183                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
2184                         mlxsw_sp_port->local_port);
2185                 goto err_port_pvid_vport_create;
2186         }
2187
2188         mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
2189         mlxsw_sp->ports[local_port] = mlxsw_sp_port;
2190         err = register_netdev(dev);
2191         if (err) {
2192                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
2193                         mlxsw_sp_port->local_port);
2194                 goto err_register_netdev;
2195         }
2196
2197         err = mlxsw_core_port_init(mlxsw_sp->core, &mlxsw_sp_port->core_port,
2198                                    mlxsw_sp_port->local_port, dev,
2199                                    mlxsw_sp_port->split, module);
2200         if (err) {
2201                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
2202                         mlxsw_sp_port->local_port);
2203                 goto err_core_port_init;
2204         }
2205
2206         return 0;
2207
2208 err_core_port_init:
2209         unregister_netdev(dev);
2210 err_register_netdev:
2211         mlxsw_sp->ports[local_port] = NULL;
2212         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2213         mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2214 err_port_pvid_vport_create:
2215         mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2216 err_port_dcb_init:
2217 err_port_ets_init:
2218 err_port_buffers_init:
2219 err_port_admin_status_set:
2220 err_port_mtu_set:
2221 err_port_speed_by_width_set:
2222 err_port_system_port_mapping_set:
2223 err_dev_addr_init:
2224         mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2225 err_port_swid_set:
2226         free_percpu(mlxsw_sp_port->pcpu_stats);
2227 err_alloc_stats:
2228         kfree(mlxsw_sp_port->untagged_vlans);
2229 err_port_untagged_vlans_alloc:
2230         kfree(mlxsw_sp_port->active_vlans);
2231 err_port_active_vlans_alloc:
2232         free_netdev(dev);
2233         return err;
2234 }
2235
2236 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
2237 {
2238         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
2239
2240         if (!mlxsw_sp_port)
2241                 return;
2242         mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
2243         unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
2244         mlxsw_sp->ports[local_port] = NULL;
2245         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2246         mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2247         mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2248         mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2249         mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
2250         free_percpu(mlxsw_sp_port->pcpu_stats);
2251         kfree(mlxsw_sp_port->untagged_vlans);
2252         kfree(mlxsw_sp_port->active_vlans);
2253         WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
2254         free_netdev(mlxsw_sp_port->dev);
2255 }
2256
2257 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
2258 {
2259         int i;
2260
2261         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
2262                 mlxsw_sp_port_remove(mlxsw_sp, i);
2263         kfree(mlxsw_sp->ports);
2264 }
2265
2266 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
2267 {
2268         u8 module, width, lane;
2269         size_t alloc_size;
2270         int i;
2271         int err;
2272
2273         alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
2274         mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
2275         if (!mlxsw_sp->ports)
2276                 return -ENOMEM;
2277
2278         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
2279                 err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
2280                                                     &width, &lane);
2281                 if (err)
2282                         goto err_port_module_info_get;
2283                 if (!width)
2284                         continue;
2285                 mlxsw_sp->port_to_module[i] = module;
2286                 err = mlxsw_sp_port_create(mlxsw_sp, i, false, module, width,
2287                                            lane);
2288                 if (err)
2289                         goto err_port_create;
2290         }
2291         return 0;
2292
2293 err_port_create:
2294 err_port_module_info_get:
2295         for (i--; i >= 1; i--)
2296                 mlxsw_sp_port_remove(mlxsw_sp, i);
2297         kfree(mlxsw_sp->ports);
2298         return err;
2299 }
2300
2301 static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
2302 {
2303         u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;
2304
2305         return local_port - offset;
2306 }
2307
2308 static int mlxsw_sp_port_split_create(struct mlxsw_sp *mlxsw_sp, u8 base_port,
2309                                       u8 module, unsigned int count)
2310 {
2311         u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
2312         int err, i;
2313
2314         for (i = 0; i < count; i++) {
2315                 err = mlxsw_sp_port_module_map(mlxsw_sp, base_port + i, module,
2316                                                width, i * width);
2317                 if (err)
2318                         goto err_port_module_map;
2319         }
2320
2321         for (i = 0; i < count; i++) {
2322                 err = __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i, 0);
2323                 if (err)
2324                         goto err_port_swid_set;
2325         }
2326
2327         for (i = 0; i < count; i++) {
2328                 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
2329                                            module, width, i * width);
2330                 if (err)
2331                         goto err_port_create;
2332         }
2333
2334         return 0;
2335
2336 err_port_create:
2337         for (i--; i >= 0; i--)
2338                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2339         i = count;
2340 err_port_swid_set:
2341         for (i--; i >= 0; i--)
2342                 __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i,
2343                                          MLXSW_PORT_SWID_DISABLED_PORT);
2344         i = count;
2345 err_port_module_map:
2346         for (i--; i >= 0; i--)
2347                 mlxsw_sp_port_module_unmap(mlxsw_sp, base_port + i);
2348         return err;
2349 }
2350
2351 static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
2352                                          u8 base_port, unsigned int count)
2353 {
2354         u8 local_port, module, width = MLXSW_PORT_MODULE_MAX_WIDTH;
2355         int i;
2356
2357         /* Split by four means we need to re-create two ports, otherwise
2358          * only one.
2359          */
2360         count = count / 2;
2361
2362         for (i = 0; i < count; i++) {
2363                 local_port = base_port + i * 2;
2364                 module = mlxsw_sp->port_to_module[local_port];
2365
2366                 mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
2367                                          0);
2368         }
2369
2370         for (i = 0; i < count; i++)
2371                 __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i * 2, 0);
2372
2373         for (i = 0; i < count; i++) {
2374                 local_port = base_port + i * 2;
2375                 module = mlxsw_sp->port_to_module[local_port];
2376
2377                 mlxsw_sp_port_create(mlxsw_sp, local_port, false, module,
2378                                      width, 0);
2379         }
2380 }
2381
2382 static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
2383                                unsigned int count)
2384 {
2385         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2386         struct mlxsw_sp_port *mlxsw_sp_port;
2387         u8 module, cur_width, base_port;
2388         int i;
2389         int err;
2390
2391         mlxsw_sp_port = mlxsw_sp->ports[local_port];
2392         if (!mlxsw_sp_port) {
2393                 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
2394                         local_port);
2395                 return -EINVAL;
2396         }
2397
2398         module = mlxsw_sp_port->mapping.module;
2399         cur_width = mlxsw_sp_port->mapping.width;
2400
2401         if (count != 2 && count != 4) {
2402                 netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
2403                 return -EINVAL;
2404         }
2405
2406         if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
2407                 netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
2408                 return -EINVAL;
2409         }
2410
2411         /* Make sure we have enough slave (even) ports for the split. */
2412         if (count == 2) {
2413                 base_port = local_port;
2414                 if (mlxsw_sp->ports[base_port + 1]) {
2415                         netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
2416                         return -EINVAL;
2417                 }
2418         } else {
2419                 base_port = mlxsw_sp_cluster_base_port_get(local_port);
2420                 if (mlxsw_sp->ports[base_port + 1] ||
2421                     mlxsw_sp->ports[base_port + 3]) {
2422                         netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
2423                         return -EINVAL;
2424                 }
2425         }
2426
2427         for (i = 0; i < count; i++)
2428                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2429
2430         err = mlxsw_sp_port_split_create(mlxsw_sp, base_port, module, count);
2431         if (err) {
2432                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create split ports\n");
2433                 goto err_port_split_create;
2434         }
2435
2436         return 0;
2437
2438 err_port_split_create:
2439         mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2440         return err;
2441 }
2442
2443 static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
2444 {
2445         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2446         struct mlxsw_sp_port *mlxsw_sp_port;
2447         u8 cur_width, base_port;
2448         unsigned int count;
2449         int i;
2450
2451         mlxsw_sp_port = mlxsw_sp->ports[local_port];
2452         if (!mlxsw_sp_port) {
2453                 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
2454                         local_port);
2455                 return -EINVAL;
2456         }
2457
2458         if (!mlxsw_sp_port->split) {
2459                 netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
2460                 return -EINVAL;
2461         }
2462
2463         cur_width = mlxsw_sp_port->mapping.width;
2464         count = cur_width == 1 ? 4 : 2;
2465
2466         base_port = mlxsw_sp_cluster_base_port_get(local_port);
2467
2468         /* Determine which ports to remove. */
2469         if (count == 2 && local_port >= base_port + 2)
2470                 base_port = base_port + 2;
2471
2472         for (i = 0; i < count; i++)
2473                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2474
2475         mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2476
2477         return 0;
2478 }
2479
2480 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
2481                                      char *pude_pl, void *priv)
2482 {
2483         struct mlxsw_sp *mlxsw_sp = priv;
2484         struct mlxsw_sp_port *mlxsw_sp_port;
2485         enum mlxsw_reg_pude_oper_status status;
2486         u8 local_port;
2487
2488         local_port = mlxsw_reg_pude_local_port_get(pude_pl);
2489         mlxsw_sp_port = mlxsw_sp->ports[local_port];
2490         if (!mlxsw_sp_port)
2491                 return;
2492
2493         status = mlxsw_reg_pude_oper_status_get(pude_pl);
2494         if (status == MLXSW_PORT_OPER_STATUS_UP) {
2495                 netdev_info(mlxsw_sp_port->dev, "link up\n");
2496                 netif_carrier_on(mlxsw_sp_port->dev);
2497         } else {
2498                 netdev_info(mlxsw_sp_port->dev, "link down\n");
2499                 netif_carrier_off(mlxsw_sp_port->dev);
2500         }
2501 }
2502
2503 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
2504         .func = mlxsw_sp_pude_event_func,
2505         .trap_id = MLXSW_TRAP_ID_PUDE,
2506 };
2507
2508 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
2509                                    enum mlxsw_event_trap_id trap_id)
2510 {
2511         struct mlxsw_event_listener *el;
2512         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2513         int err;
2514
2515         switch (trap_id) {
2516         case MLXSW_TRAP_ID_PUDE:
2517                 el = &mlxsw_sp_pude_event;
2518                 break;
2519         }
2520         err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
2521         if (err)
2522                 return err;
2523
2524         mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
2525         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2526         if (err)
2527                 goto err_event_trap_set;
2528
2529         return 0;
2530
2531 err_event_trap_set:
2532         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
2533         return err;
2534 }
2535
2536 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
2537                                       enum mlxsw_event_trap_id trap_id)
2538 {
2539         struct mlxsw_event_listener *el;
2540
2541         switch (trap_id) {
2542         case MLXSW_TRAP_ID_PUDE:
2543                 el = &mlxsw_sp_pude_event;
2544                 break;
2545         }
2546         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
2547 }
2548
2549 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
2550                                       void *priv)
2551 {
2552         struct mlxsw_sp *mlxsw_sp = priv;
2553         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
2554         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
2555
2556         if (unlikely(!mlxsw_sp_port)) {
2557                 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
2558                                      local_port);
2559                 return;
2560         }
2561
2562         skb->dev = mlxsw_sp_port->dev;
2563
2564         pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
2565         u64_stats_update_begin(&pcpu_stats->syncp);
2566         pcpu_stats->rx_packets++;
2567         pcpu_stats->rx_bytes += skb->len;
2568         u64_stats_update_end(&pcpu_stats->syncp);
2569
2570         skb->protocol = eth_type_trans(skb, skb->dev);
2571         netif_receive_skb(skb);
2572 }
2573
2574 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
2575         {
2576                 .func = mlxsw_sp_rx_listener_func,
2577                 .local_port = MLXSW_PORT_DONT_CARE,
2578                 .trap_id = MLXSW_TRAP_ID_FDB_MC,
2579         },
2580         /* Traps for specific L2 packet types, not trapped as FDB MC */
2581         {
2582                 .func = mlxsw_sp_rx_listener_func,
2583                 .local_port = MLXSW_PORT_DONT_CARE,
2584                 .trap_id = MLXSW_TRAP_ID_STP,
2585         },
2586         {
2587                 .func = mlxsw_sp_rx_listener_func,
2588                 .local_port = MLXSW_PORT_DONT_CARE,
2589                 .trap_id = MLXSW_TRAP_ID_LACP,
2590         },
2591         {
2592                 .func = mlxsw_sp_rx_listener_func,
2593                 .local_port = MLXSW_PORT_DONT_CARE,
2594                 .trap_id = MLXSW_TRAP_ID_EAPOL,
2595         },
2596         {
2597                 .func = mlxsw_sp_rx_listener_func,
2598                 .local_port = MLXSW_PORT_DONT_CARE,
2599                 .trap_id = MLXSW_TRAP_ID_LLDP,
2600         },
2601         {
2602                 .func = mlxsw_sp_rx_listener_func,
2603                 .local_port = MLXSW_PORT_DONT_CARE,
2604                 .trap_id = MLXSW_TRAP_ID_MMRP,
2605         },
2606         {
2607                 .func = mlxsw_sp_rx_listener_func,
2608                 .local_port = MLXSW_PORT_DONT_CARE,
2609                 .trap_id = MLXSW_TRAP_ID_MVRP,
2610         },
2611         {
2612                 .func = mlxsw_sp_rx_listener_func,
2613                 .local_port = MLXSW_PORT_DONT_CARE,
2614                 .trap_id = MLXSW_TRAP_ID_RPVST,
2615         },
2616         {
2617                 .func = mlxsw_sp_rx_listener_func,
2618                 .local_port = MLXSW_PORT_DONT_CARE,
2619                 .trap_id = MLXSW_TRAP_ID_DHCP,
2620         },
2621         {
2622                 .func = mlxsw_sp_rx_listener_func,
2623                 .local_port = MLXSW_PORT_DONT_CARE,
2624                 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
2625         },
2626         {
2627                 .func = mlxsw_sp_rx_listener_func,
2628                 .local_port = MLXSW_PORT_DONT_CARE,
2629                 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
2630         },
2631         {
2632                 .func = mlxsw_sp_rx_listener_func,
2633                 .local_port = MLXSW_PORT_DONT_CARE,
2634                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
2635         },
2636         {
2637                 .func = mlxsw_sp_rx_listener_func,
2638                 .local_port = MLXSW_PORT_DONT_CARE,
2639                 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
2640         },
2641         {
2642                 .func = mlxsw_sp_rx_listener_func,
2643                 .local_port = MLXSW_PORT_DONT_CARE,
2644                 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
2645         },
2646         {
2647                 .func = mlxsw_sp_rx_listener_func,
2648                 .local_port = MLXSW_PORT_DONT_CARE,
2649                 .trap_id = MLXSW_TRAP_ID_ARPBC,
2650         },
2651         {
2652                 .func = mlxsw_sp_rx_listener_func,
2653                 .local_port = MLXSW_PORT_DONT_CARE,
2654                 .trap_id = MLXSW_TRAP_ID_ARPUC,
2655         },
2656         {
2657                 .func = mlxsw_sp_rx_listener_func,
2658                 .local_port = MLXSW_PORT_DONT_CARE,
2659                 .trap_id = MLXSW_TRAP_ID_MTUERROR,
2660         },
2661         {
2662                 .func = mlxsw_sp_rx_listener_func,
2663                 .local_port = MLXSW_PORT_DONT_CARE,
2664                 .trap_id = MLXSW_TRAP_ID_TTLERROR,
2665         },
2666         {
2667                 .func = mlxsw_sp_rx_listener_func,
2668                 .local_port = MLXSW_PORT_DONT_CARE,
2669                 .trap_id = MLXSW_TRAP_ID_LBERROR,
2670         },
2671         {
2672                 .func = mlxsw_sp_rx_listener_func,
2673                 .local_port = MLXSW_PORT_DONT_CARE,
2674                 .trap_id = MLXSW_TRAP_ID_OSPF,
2675         },
2676         {
2677                 .func = mlxsw_sp_rx_listener_func,
2678                 .local_port = MLXSW_PORT_DONT_CARE,
2679                 .trap_id = MLXSW_TRAP_ID_IP2ME,
2680         },
2681         {
2682                 .func = mlxsw_sp_rx_listener_func,
2683                 .local_port = MLXSW_PORT_DONT_CARE,
2684                 .trap_id = MLXSW_TRAP_ID_RTR_INGRESS0,
2685         },
2686         {
2687                 .func = mlxsw_sp_rx_listener_func,
2688                 .local_port = MLXSW_PORT_DONT_CARE,
2689                 .trap_id = MLXSW_TRAP_ID_HOST_MISS_IPV4,
2690         },
2691 };
2692
2693 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
2694 {
2695         char htgt_pl[MLXSW_REG_HTGT_LEN];
2696         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2697         int i;
2698         int err;
2699
2700         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
2701         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
2702         if (err)
2703                 return err;
2704
2705         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
2706         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
2707         if (err)
2708                 return err;
2709
2710         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2711                 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
2712                                                       &mlxsw_sp_rx_listener[i],
2713                                                       mlxsw_sp);
2714                 if (err)
2715                         goto err_rx_listener_register;
2716
2717                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
2718                                     mlxsw_sp_rx_listener[i].trap_id);
2719                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2720                 if (err)
2721                         goto err_rx_trap_set;
2722         }
2723         return 0;
2724
2725 err_rx_trap_set:
2726         mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2727                                           &mlxsw_sp_rx_listener[i],
2728                                           mlxsw_sp);
2729 err_rx_listener_register:
2730         for (i--; i >= 0; i--) {
2731                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2732                                     mlxsw_sp_rx_listener[i].trap_id);
2733                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2734
2735                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2736                                                   &mlxsw_sp_rx_listener[i],
2737                                                   mlxsw_sp);
2738         }
2739         return err;
2740 }
2741
2742 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
2743 {
2744         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2745         int i;
2746
2747         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2748                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2749                                     mlxsw_sp_rx_listener[i].trap_id);
2750                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2751
2752                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2753                                                   &mlxsw_sp_rx_listener[i],
2754                                                   mlxsw_sp);
2755         }
2756 }
2757
2758 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
2759                                  enum mlxsw_reg_sfgc_type type,
2760                                  enum mlxsw_reg_sfgc_bridge_type bridge_type)
2761 {
2762         enum mlxsw_flood_table_type table_type;
2763         enum mlxsw_sp_flood_table flood_table;
2764         char sfgc_pl[MLXSW_REG_SFGC_LEN];
2765
2766         if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2767                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2768         else
2769                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2770
2771         if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
2772                 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
2773         else
2774                 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2775
2776         mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
2777                             flood_table);
2778         return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
2779 }
2780
2781 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
2782 {
2783         int type, err;
2784
2785         for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
2786                 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
2787                         continue;
2788
2789                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2790                                             MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
2791                 if (err)
2792                         return err;
2793
2794                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2795                                             MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
2796                 if (err)
2797                         return err;
2798         }
2799
2800         return 0;
2801 }
2802
2803 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
2804 {
2805         char slcr_pl[MLXSW_REG_SLCR_LEN];
2806
2807         mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
2808                                      MLXSW_REG_SLCR_LAG_HASH_DMAC |
2809                                      MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
2810                                      MLXSW_REG_SLCR_LAG_HASH_VLANID |
2811                                      MLXSW_REG_SLCR_LAG_HASH_SIP |
2812                                      MLXSW_REG_SLCR_LAG_HASH_DIP |
2813                                      MLXSW_REG_SLCR_LAG_HASH_SPORT |
2814                                      MLXSW_REG_SLCR_LAG_HASH_DPORT |
2815                                      MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
2816         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
2817 }
2818
2819 static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
2820                          const struct mlxsw_bus_info *mlxsw_bus_info)
2821 {
2822         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2823         int err;
2824
2825         mlxsw_sp->core = mlxsw_core;
2826         mlxsw_sp->bus_info = mlxsw_bus_info;
2827         INIT_LIST_HEAD(&mlxsw_sp->fids);
2828         INIT_LIST_HEAD(&mlxsw_sp->vfids.list);
2829         INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2830
2831         err = mlxsw_sp_base_mac_get(mlxsw_sp);
2832         if (err) {
2833                 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
2834                 return err;
2835         }
2836
2837         err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2838         if (err) {
2839                 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
2840                 return err;
2841         }
2842
2843         err = mlxsw_sp_traps_init(mlxsw_sp);
2844         if (err) {
2845                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
2846                 goto err_rx_listener_register;
2847         }
2848
2849         err = mlxsw_sp_flood_init(mlxsw_sp);
2850         if (err) {
2851                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
2852                 goto err_flood_init;
2853         }
2854
2855         err = mlxsw_sp_buffers_init(mlxsw_sp);
2856         if (err) {
2857                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
2858                 goto err_buffers_init;
2859         }
2860
2861         err = mlxsw_sp_lag_init(mlxsw_sp);
2862         if (err) {
2863                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
2864                 goto err_lag_init;
2865         }
2866
2867         err = mlxsw_sp_switchdev_init(mlxsw_sp);
2868         if (err) {
2869                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
2870                 goto err_switchdev_init;
2871         }
2872
2873         err = mlxsw_sp_router_init(mlxsw_sp);
2874         if (err) {
2875                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize router\n");
2876                 goto err_router_init;
2877         }
2878
2879         err = mlxsw_sp_span_init(mlxsw_sp);
2880         if (err) {
2881                 dev_err(mlxsw_sp->bus_info->dev, "Failed to init span system\n");
2882                 goto err_span_init;
2883         }
2884
2885         err = mlxsw_sp_ports_create(mlxsw_sp);
2886         if (err) {
2887                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
2888                 goto err_ports_create;
2889         }
2890
2891         return 0;
2892
2893 err_ports_create:
2894         mlxsw_sp_span_fini(mlxsw_sp);
2895 err_span_init:
2896         mlxsw_sp_router_fini(mlxsw_sp);
2897 err_router_init:
2898         mlxsw_sp_switchdev_fini(mlxsw_sp);
2899 err_switchdev_init:
2900 err_lag_init:
2901         mlxsw_sp_buffers_fini(mlxsw_sp);
2902 err_buffers_init:
2903 err_flood_init:
2904         mlxsw_sp_traps_fini(mlxsw_sp);
2905 err_rx_listener_register:
2906         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2907         return err;
2908 }
2909
2910 static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
2911 {
2912         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2913         int i;
2914
2915         mlxsw_sp_ports_remove(mlxsw_sp);
2916         mlxsw_sp_span_fini(mlxsw_sp);
2917         mlxsw_sp_router_fini(mlxsw_sp);
2918         mlxsw_sp_switchdev_fini(mlxsw_sp);
2919         mlxsw_sp_buffers_fini(mlxsw_sp);
2920         mlxsw_sp_traps_fini(mlxsw_sp);
2921         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2922         WARN_ON(!list_empty(&mlxsw_sp->vfids.list));
2923         WARN_ON(!list_empty(&mlxsw_sp->fids));
2924         for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
2925                 WARN_ON_ONCE(mlxsw_sp->rifs[i]);
2926 }
2927
2928 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
2929         .used_max_vepa_channels         = 1,
2930         .max_vepa_channels              = 0,
2931         .used_max_lag                   = 1,
2932         .max_lag                        = MLXSW_SP_LAG_MAX,
2933         .used_max_port_per_lag          = 1,
2934         .max_port_per_lag               = MLXSW_SP_PORT_PER_LAG_MAX,
2935         .used_max_mid                   = 1,
2936         .max_mid                        = MLXSW_SP_MID_MAX,
2937         .used_max_pgt                   = 1,
2938         .max_pgt                        = 0,
2939         .used_max_system_port           = 1,
2940         .max_system_port                = 64,
2941         .used_max_vlan_groups           = 1,
2942         .max_vlan_groups                = 127,
2943         .used_max_regions               = 1,
2944         .max_regions                    = 400,
2945         .used_flood_tables              = 1,
2946         .used_flood_mode                = 1,
2947         .flood_mode                     = 3,
2948         .max_fid_offset_flood_tables    = 2,
2949         .fid_offset_flood_table_size    = VLAN_N_VID - 1,
2950         .max_fid_flood_tables           = 2,
2951         .fid_flood_table_size           = MLXSW_SP_VFID_MAX,
2952         .used_max_ib_mc                 = 1,
2953         .max_ib_mc                      = 0,
2954         .used_max_pkey                  = 1,
2955         .max_pkey                       = 0,
2956         .used_kvd_sizes                 = 1,
2957         .kvd_linear_size                = MLXSW_SP_KVD_LINEAR_SIZE,
2958         .kvd_hash_single_size           = MLXSW_SP_KVD_HASH_SINGLE_SIZE,
2959         .kvd_hash_double_size           = MLXSW_SP_KVD_HASH_DOUBLE_SIZE,
2960         .swid_config                    = {
2961                 {
2962                         .used_type      = 1,
2963                         .type           = MLXSW_PORT_SWID_TYPE_ETH,
2964                 }
2965         },
2966         .resource_query_enable          = 1,
2967 };
2968
2969 static struct mlxsw_driver mlxsw_sp_driver = {
2970         .kind                           = MLXSW_DEVICE_KIND_SPECTRUM,
2971         .owner                          = THIS_MODULE,
2972         .priv_size                      = sizeof(struct mlxsw_sp),
2973         .init                           = mlxsw_sp_init,
2974         .fini                           = mlxsw_sp_fini,
2975         .port_split                     = mlxsw_sp_port_split,
2976         .port_unsplit                   = mlxsw_sp_port_unsplit,
2977         .sb_pool_get                    = mlxsw_sp_sb_pool_get,
2978         .sb_pool_set                    = mlxsw_sp_sb_pool_set,
2979         .sb_port_pool_get               = mlxsw_sp_sb_port_pool_get,
2980         .sb_port_pool_set               = mlxsw_sp_sb_port_pool_set,
2981         .sb_tc_pool_bind_get            = mlxsw_sp_sb_tc_pool_bind_get,
2982         .sb_tc_pool_bind_set            = mlxsw_sp_sb_tc_pool_bind_set,
2983         .sb_occ_snapshot                = mlxsw_sp_sb_occ_snapshot,
2984         .sb_occ_max_clear               = mlxsw_sp_sb_occ_max_clear,
2985         .sb_occ_port_pool_get           = mlxsw_sp_sb_occ_port_pool_get,
2986         .sb_occ_tc_port_bind_get        = mlxsw_sp_sb_occ_tc_port_bind_get,
2987         .txhdr_construct                = mlxsw_sp_txhdr_construct,
2988         .txhdr_len                      = MLXSW_TXHDR_LEN,
2989         .profile                        = &mlxsw_sp_config_profile,
2990 };
2991
2992 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
2993 {
2994         return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
2995 }
2996
2997 static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev)
2998 {
2999         struct net_device *lower_dev;
3000         struct list_head *iter;
3001
3002         if (mlxsw_sp_port_dev_check(dev))
3003                 return netdev_priv(dev);
3004
3005         netdev_for_each_all_lower_dev(dev, lower_dev, iter) {
3006                 if (mlxsw_sp_port_dev_check(lower_dev))
3007                         return netdev_priv(lower_dev);
3008         }
3009         return NULL;
3010 }
3011
3012 static struct mlxsw_sp *mlxsw_sp_lower_get(struct net_device *dev)
3013 {
3014         struct mlxsw_sp_port *mlxsw_sp_port;
3015
3016         mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
3017         return mlxsw_sp_port ? mlxsw_sp_port->mlxsw_sp : NULL;
3018 }
3019
3020 static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find_rcu(struct net_device *dev)
3021 {
3022         struct net_device *lower_dev;
3023         struct list_head *iter;
3024
3025         if (mlxsw_sp_port_dev_check(dev))
3026                 return netdev_priv(dev);
3027
3028         netdev_for_each_all_lower_dev_rcu(dev, lower_dev, iter) {
3029                 if (mlxsw_sp_port_dev_check(lower_dev))
3030                         return netdev_priv(lower_dev);
3031         }
3032         return NULL;
3033 }
3034
3035 struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev)
3036 {
3037         struct mlxsw_sp_port *mlxsw_sp_port;
3038
3039         rcu_read_lock();
3040         mlxsw_sp_port = mlxsw_sp_port_dev_lower_find_rcu(dev);
3041         if (mlxsw_sp_port)
3042                 dev_hold(mlxsw_sp_port->dev);
3043         rcu_read_unlock();
3044         return mlxsw_sp_port;
3045 }
3046
3047 void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port)
3048 {
3049         dev_put(mlxsw_sp_port->dev);
3050 }
3051
3052 static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r,
3053                                        unsigned long event)
3054 {
3055         switch (event) {
3056         case NETDEV_UP:
3057                 if (!r)
3058                         return true;
3059                 r->ref_count++;
3060                 return false;
3061         case NETDEV_DOWN:
3062                 if (r && --r->ref_count == 0)
3063                         return true;
3064                 /* It is possible we already removed the RIF ourselves
3065                  * if it was assigned to a netdev that is now a bridge
3066                  * or LAG slave.
3067                  */
3068                 return false;
3069         }
3070
3071         return false;
3072 }
3073
3074 static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp)
3075 {
3076         int i;
3077
3078         for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
3079                 if (!mlxsw_sp->rifs[i])
3080                         return i;
3081
3082         return MLXSW_SP_RIF_MAX;
3083 }
3084
3085 static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport,
3086                                            bool *p_lagged, u16 *p_system_port)
3087 {
3088         u8 local_port = mlxsw_sp_vport->local_port;
3089
3090         *p_lagged = mlxsw_sp_vport->lagged;
3091         *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port;
3092 }
3093
3094 static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport,
3095                                     struct net_device *l3_dev, u16 rif,
3096                                     bool create)
3097 {
3098         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3099         bool lagged = mlxsw_sp_vport->lagged;
3100         char ritr_pl[MLXSW_REG_RITR_LEN];
3101         u16 system_port;
3102
3103         mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif,
3104                             l3_dev->mtu, l3_dev->dev_addr);
3105
3106         mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port);
3107         mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port,
3108                                   mlxsw_sp_vport_vid_get(mlxsw_sp_vport));
3109
3110         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3111 }
3112
3113 static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
3114
3115 static struct mlxsw_sp_fid *
3116 mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev)
3117 {
3118         struct mlxsw_sp_fid *f;
3119
3120         f = kzalloc(sizeof(*f), GFP_KERNEL);
3121         if (!f)
3122                 return NULL;
3123
3124         f->leave = mlxsw_sp_vport_rif_sp_leave;
3125         f->ref_count = 0;
3126         f->dev = l3_dev;
3127         f->fid = fid;
3128
3129         return f;
3130 }
3131
3132 static struct mlxsw_sp_rif *
3133 mlxsw_sp_rif_alloc(u16 rif, struct net_device *l3_dev, struct mlxsw_sp_fid *f)
3134 {
3135         struct mlxsw_sp_rif *r;
3136
3137         r = kzalloc(sizeof(*r), GFP_KERNEL);
3138         if (!r)
3139                 return NULL;
3140
3141         ether_addr_copy(r->addr, l3_dev->dev_addr);
3142         r->mtu = l3_dev->mtu;
3143         r->ref_count = 1;
3144         r->dev = l3_dev;
3145         r->rif = rif;
3146         r->f = f;
3147
3148         return r;
3149 }
3150
3151 static struct mlxsw_sp_rif *
3152 mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport,
3153                              struct net_device *l3_dev)
3154 {
3155         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3156         struct mlxsw_sp_fid *f;
3157         struct mlxsw_sp_rif *r;
3158         u16 fid, rif;
3159         int err;
3160
3161         rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3162         if (rif == MLXSW_SP_RIF_MAX)
3163                 return ERR_PTR(-ERANGE);
3164
3165         err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, true);
3166         if (err)
3167                 return ERR_PTR(err);
3168
3169         fid = mlxsw_sp_rif_sp_to_fid(rif);
3170         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true);
3171         if (err)
3172                 goto err_rif_fdb_op;
3173
3174         f = mlxsw_sp_rfid_alloc(fid, l3_dev);
3175         if (!f) {
3176                 err = -ENOMEM;
3177                 goto err_rfid_alloc;
3178         }
3179
3180         r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
3181         if (!r) {
3182                 err = -ENOMEM;
3183                 goto err_rif_alloc;
3184         }
3185
3186         f->r = r;
3187         mlxsw_sp->rifs[rif] = r;
3188
3189         return r;
3190
3191 err_rif_alloc:
3192         kfree(f);
3193 err_rfid_alloc:
3194         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
3195 err_rif_fdb_op:
3196         mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
3197         return ERR_PTR(err);
3198 }
3199
3200 static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport,
3201                                           struct mlxsw_sp_rif *r)
3202 {
3203         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3204         struct net_device *l3_dev = r->dev;
3205         struct mlxsw_sp_fid *f = r->f;
3206         u16 fid = f->fid;
3207         u16 rif = r->rif;
3208
3209         mlxsw_sp->rifs[rif] = NULL;
3210         f->r = NULL;
3211
3212         kfree(r);
3213
3214         kfree(f);
3215
3216         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
3217
3218         mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
3219 }
3220
3221 static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport,
3222                                       struct net_device *l3_dev)
3223 {
3224         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3225         struct mlxsw_sp_rif *r;
3226
3227         r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3228         if (!r) {
3229                 r = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev);
3230                 if (IS_ERR(r))
3231                         return PTR_ERR(r);
3232         }
3233
3234         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, r->f);
3235         r->f->ref_count++;
3236
3237         netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", r->f->fid);
3238
3239         return 0;
3240 }
3241
3242 static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
3243 {
3244         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3245
3246         netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
3247
3248         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
3249         if (--f->ref_count == 0)
3250                 mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->r);
3251 }
3252
3253 static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev,
3254                                          struct net_device *port_dev,
3255                                          unsigned long event, u16 vid)
3256 {
3257         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
3258         struct mlxsw_sp_port *mlxsw_sp_vport;
3259
3260         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
3261         if (WARN_ON(!mlxsw_sp_vport))
3262                 return -EINVAL;
3263
3264         switch (event) {
3265         case NETDEV_UP:
3266                 return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev);
3267         case NETDEV_DOWN:
3268                 mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport);
3269                 break;
3270         }
3271
3272         return 0;
3273 }
3274
3275 static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
3276                                         unsigned long event)
3277 {
3278         if (netif_is_bridge_port(port_dev) || netif_is_lag_port(port_dev))
3279                 return 0;
3280
3281         return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1);
3282 }
3283
3284 static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
3285                                          struct net_device *lag_dev,
3286                                          unsigned long event, u16 vid)
3287 {
3288         struct net_device *port_dev;
3289         struct list_head *iter;
3290         int err;
3291
3292         netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
3293                 if (mlxsw_sp_port_dev_check(port_dev)) {
3294                         err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev,
3295                                                             event, vid);
3296                         if (err)
3297                                 return err;
3298                 }
3299         }
3300
3301         return 0;
3302 }
3303
3304 static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
3305                                        unsigned long event)
3306 {
3307         if (netif_is_bridge_port(lag_dev))
3308                 return 0;
3309
3310         return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1);
3311 }
3312
3313 static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp,
3314                                                     struct net_device *l3_dev)
3315 {
3316         u16 fid;
3317
3318         if (is_vlan_dev(l3_dev))
3319                 fid = vlan_dev_vlan_id(l3_dev);
3320         else if (mlxsw_sp->master_bridge.dev == l3_dev)
3321                 fid = 1;
3322         else
3323                 return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev);
3324
3325         return mlxsw_sp_fid_find(mlxsw_sp, fid);
3326 }
3327
3328 static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid)
3329 {
3330         return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID :
3331                MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
3332 }
3333
3334 static u16 mlxsw_sp_flood_table_index_get(u16 fid)
3335 {
3336         return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid;
3337 }
3338
3339 static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid,
3340                                           bool set)
3341 {
3342         enum mlxsw_flood_table_type table_type;
3343         char *sftr_pl;
3344         u16 index;
3345         int err;
3346
3347         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
3348         if (!sftr_pl)
3349                 return -ENOMEM;
3350
3351         table_type = mlxsw_sp_flood_table_type_get(fid);
3352         index = mlxsw_sp_flood_table_index_get(fid);
3353         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, index, table_type,
3354                             1, MLXSW_PORT_ROUTER_PORT, set);
3355         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
3356
3357         kfree(sftr_pl);
3358         return err;
3359 }
3360
3361 static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid)
3362 {
3363         if (mlxsw_sp_fid_is_vfid(fid))
3364                 return MLXSW_REG_RITR_FID_IF;
3365         else
3366                 return MLXSW_REG_RITR_VLAN_IF;
3367 }
3368
3369 static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp,
3370                                   struct net_device *l3_dev,
3371                                   u16 fid, u16 rif,
3372                                   bool create)
3373 {
3374         enum mlxsw_reg_ritr_if_type rif_type;
3375         char ritr_pl[MLXSW_REG_RITR_LEN];
3376
3377         rif_type = mlxsw_sp_rif_type_get(fid);
3378         mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, l3_dev->mtu,
3379                             l3_dev->dev_addr);
3380         mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid);
3381
3382         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3383 }
3384
3385 static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
3386                                       struct net_device *l3_dev,
3387                                       struct mlxsw_sp_fid *f)
3388 {
3389         struct mlxsw_sp_rif *r;
3390         u16 rif;
3391         int err;
3392
3393         rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3394         if (rif == MLXSW_SP_RIF_MAX)
3395                 return -ERANGE;
3396
3397         err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
3398         if (err)
3399                 return err;
3400
3401         err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true);
3402         if (err)
3403                 goto err_rif_bridge_op;
3404
3405         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true);
3406         if (err)
3407                 goto err_rif_fdb_op;
3408
3409         r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
3410         if (!r) {
3411                 err = -ENOMEM;
3412                 goto err_rif_alloc;
3413         }
3414
3415         f->r = r;
3416         mlxsw_sp->rifs[rif] = r;
3417
3418         netdev_dbg(l3_dev, "RIF=%d created\n", rif);
3419
3420         return 0;
3421
3422 err_rif_alloc:
3423         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
3424 err_rif_fdb_op:
3425         mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3426 err_rif_bridge_op:
3427         mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3428         return err;
3429 }
3430
3431 void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp,
3432                                  struct mlxsw_sp_rif *r)
3433 {
3434         struct net_device *l3_dev = r->dev;
3435         struct mlxsw_sp_fid *f = r->f;
3436         u16 rif = r->rif;
3437
3438         mlxsw_sp->rifs[rif] = NULL;
3439         f->r = NULL;
3440
3441         kfree(r);
3442
3443         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
3444
3445         mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3446
3447         mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3448
3449         netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif);
3450 }
3451
3452 static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev,
3453                                           struct net_device *br_dev,
3454                                           unsigned long event)
3455 {
3456         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
3457         struct mlxsw_sp_fid *f;
3458
3459         /* FID can either be an actual FID if the L3 device is the
3460          * VLAN-aware bridge or a VLAN device on top. Otherwise, the
3461          * L3 device is a VLAN-unaware bridge and we get a vFID.
3462          */
3463         f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev);
3464         if (WARN_ON(!f))
3465                 return -EINVAL;
3466
3467         switch (event) {
3468         case NETDEV_UP:
3469                 return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f);
3470         case NETDEV_DOWN:
3471                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
3472                 break;
3473         }
3474
3475         return 0;
3476 }
3477
3478 static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev,
3479                                         unsigned long event)
3480 {
3481         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3482         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev);
3483         u16 vid = vlan_dev_vlan_id(vlan_dev);
3484
3485         if (mlxsw_sp_port_dev_check(real_dev))
3486                 return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event,
3487                                                      vid);
3488         else if (netif_is_lag_master(real_dev))
3489                 return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
3490                                                      vid);
3491         else if (netif_is_bridge_master(real_dev) &&
3492                  mlxsw_sp->master_bridge.dev == real_dev)
3493                 return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev,
3494                                                       event);
3495
3496         return 0;
3497 }
3498
3499 static int mlxsw_sp_inetaddr_event(struct notifier_block *unused,
3500                                    unsigned long event, void *ptr)
3501 {
3502         struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3503         struct net_device *dev = ifa->ifa_dev->dev;
3504         struct mlxsw_sp *mlxsw_sp;
3505         struct mlxsw_sp_rif *r;
3506         int err = 0;
3507
3508         mlxsw_sp = mlxsw_sp_lower_get(dev);
3509         if (!mlxsw_sp)
3510                 goto out;
3511
3512         r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3513         if (!mlxsw_sp_rif_should_config(r, event))
3514                 goto out;
3515
3516         if (mlxsw_sp_port_dev_check(dev))
3517                 err = mlxsw_sp_inetaddr_port_event(dev, event);
3518         else if (netif_is_lag_master(dev))
3519                 err = mlxsw_sp_inetaddr_lag_event(dev, event);
3520         else if (netif_is_bridge_master(dev))
3521                 err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event);
3522         else if (is_vlan_dev(dev))
3523                 err = mlxsw_sp_inetaddr_vlan_event(dev, event);
3524
3525 out:
3526         return notifier_from_errno(err);
3527 }
3528
3529 static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif,
3530                              const char *mac, int mtu)
3531 {
3532         char ritr_pl[MLXSW_REG_RITR_LEN];
3533         int err;
3534
3535         mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
3536         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3537         if (err)
3538                 return err;
3539
3540         mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
3541         mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
3542         mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
3543         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3544 }
3545
3546 static int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
3547 {
3548         struct mlxsw_sp *mlxsw_sp;
3549         struct mlxsw_sp_rif *r;
3550         int err;
3551
3552         mlxsw_sp = mlxsw_sp_lower_get(dev);
3553         if (!mlxsw_sp)
3554                 return 0;
3555
3556         r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3557         if (!r)
3558                 return 0;
3559
3560         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, false);
3561         if (err)
3562                 return err;
3563
3564         err = mlxsw_sp_rif_edit(mlxsw_sp, r->rif, dev->dev_addr, dev->mtu);
3565         if (err)
3566                 goto err_rif_edit;
3567
3568         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, r->f->fid, true);
3569         if (err)
3570                 goto err_rif_fdb_op;
3571
3572         ether_addr_copy(r->addr, dev->dev_addr);
3573         r->mtu = dev->mtu;
3574
3575         netdev_dbg(dev, "Updated RIF=%d\n", r->rif);
3576
3577         return 0;
3578
3579 err_rif_fdb_op:
3580         mlxsw_sp_rif_edit(mlxsw_sp, r->rif, r->addr, r->mtu);
3581 err_rif_edit:
3582         mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, true);
3583         return err;
3584 }
3585
3586 static bool mlxsw_sp_lag_port_fid_member(struct mlxsw_sp_port *lag_port,
3587                                          u16 fid)
3588 {
3589         if (mlxsw_sp_fid_is_vfid(fid))
3590                 return mlxsw_sp_port_vport_find_by_fid(lag_port, fid);
3591         else
3592                 return test_bit(fid, lag_port->active_vlans);
3593 }
3594
3595 static bool mlxsw_sp_port_fdb_should_flush(struct mlxsw_sp_port *mlxsw_sp_port,
3596                                            u16 fid)
3597 {
3598         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3599         u8 local_port = mlxsw_sp_port->local_port;
3600         u16 lag_id = mlxsw_sp_port->lag_id;
3601         int i, count = 0;
3602
3603         if (!mlxsw_sp_port->lagged)
3604                 return true;
3605
3606         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
3607                 struct mlxsw_sp_port *lag_port;
3608
3609                 lag_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
3610                 if (!lag_port || lag_port->local_port == local_port)
3611                         continue;
3612                 if (mlxsw_sp_lag_port_fid_member(lag_port, fid))
3613                         count++;
3614         }
3615
3616         return !count;
3617 }
3618
3619 static int
3620 mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
3621                                     u16 fid)
3622 {
3623         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3624         char sfdf_pl[MLXSW_REG_SFDF_LEN];
3625
3626         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
3627         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
3628         mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
3629                                                 mlxsw_sp_port->local_port);
3630
3631         netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using Port=%d, FID=%d\n",
3632                    mlxsw_sp_port->local_port, fid);
3633
3634         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
3635 }
3636
3637 static int
3638 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
3639                                       u16 fid)
3640 {
3641         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3642         char sfdf_pl[MLXSW_REG_SFDF_LEN];
3643
3644         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
3645         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
3646         mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
3647
3648         netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using LAG ID=%d, FID=%d\n",
3649                    mlxsw_sp_port->lag_id, fid);
3650
3651         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
3652 }
3653
3654 int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
3655 {
3656         if (!mlxsw_sp_port_fdb_should_flush(mlxsw_sp_port, fid))
3657                 return 0;
3658
3659         if (mlxsw_sp_port->lagged)
3660                 return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port,
3661                                                              fid);
3662         else
3663                 return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, fid);
3664 }
3665
3666 static void mlxsw_sp_master_bridge_gone_sync(struct mlxsw_sp *mlxsw_sp)
3667 {
3668         struct mlxsw_sp_fid *f, *tmp;
3669
3670         list_for_each_entry_safe(f, tmp, &mlxsw_sp->fids, list)
3671                 if (--f->ref_count == 0)
3672                         mlxsw_sp_fid_destroy(mlxsw_sp, f);
3673                 else
3674                         WARN_ON_ONCE(1);
3675 }
3676
3677 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
3678                                          struct net_device *br_dev)
3679 {
3680         return !mlxsw_sp->master_bridge.dev ||
3681                mlxsw_sp->master_bridge.dev == br_dev;
3682 }
3683
3684 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
3685                                        struct net_device *br_dev)
3686 {
3687         mlxsw_sp->master_bridge.dev = br_dev;
3688         mlxsw_sp->master_bridge.ref_count++;
3689 }
3690
3691 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
3692 {
3693         if (--mlxsw_sp->master_bridge.ref_count == 0) {
3694                 mlxsw_sp->master_bridge.dev = NULL;
3695                 /* It's possible upper VLAN devices are still holding
3696                  * references to underlying FIDs. Drop the reference
3697                  * and release the resources if it was the last one.
3698                  * If it wasn't, then something bad happened.
3699                  */
3700                 mlxsw_sp_master_bridge_gone_sync(mlxsw_sp);
3701         }
3702 }
3703
3704 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
3705                                      struct net_device *br_dev)
3706 {
3707         struct net_device *dev = mlxsw_sp_port->dev;
3708         int err;
3709
3710         /* When port is not bridged untagged packets are tagged with
3711          * PVID=VID=1, thereby creating an implicit VLAN interface in
3712          * the device. Remove it and let bridge code take care of its
3713          * own VLANs.
3714          */
3715         err = mlxsw_sp_port_kill_vid(dev, 0, 1);
3716         if (err)
3717                 return err;
3718
3719         mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev);
3720
3721         mlxsw_sp_port->learning = 1;
3722         mlxsw_sp_port->learning_sync = 1;
3723         mlxsw_sp_port->uc_flood = 1;
3724         mlxsw_sp_port->bridged = 1;
3725
3726         return 0;
3727 }
3728
3729 static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3730 {
3731         struct net_device *dev = mlxsw_sp_port->dev;
3732
3733         mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
3734
3735         mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);
3736
3737         mlxsw_sp_port->learning = 0;
3738         mlxsw_sp_port->learning_sync = 0;
3739         mlxsw_sp_port->uc_flood = 0;
3740         mlxsw_sp_port->bridged = 0;
3741
3742         /* Add implicit VLAN interface in the device, so that untagged
3743          * packets will be classified to the default vFID.
3744          */
3745         mlxsw_sp_port_add_vid(dev, 0, 1);
3746 }
3747
3748 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
3749 {
3750         char sldr_pl[MLXSW_REG_SLDR_LEN];
3751
3752         mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
3753         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3754 }
3755
3756 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
3757 {
3758         char sldr_pl[MLXSW_REG_SLDR_LEN];
3759
3760         mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
3761         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3762 }
3763
3764 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
3765                                      u16 lag_id, u8 port_index)
3766 {
3767         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3768         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3769
3770         mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
3771                                       lag_id, port_index);
3772         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3773 }
3774
3775 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
3776                                         u16 lag_id)
3777 {
3778         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3779         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3780
3781         mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
3782                                          lag_id);
3783         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3784 }
3785
3786 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
3787                                         u16 lag_id)
3788 {
3789         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3790         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3791
3792         mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
3793                                         lag_id);
3794         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3795 }
3796
3797 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
3798                                          u16 lag_id)
3799 {
3800         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3801         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3802
3803         mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
3804                                          lag_id);
3805         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3806 }
3807
3808 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
3809                                   struct net_device *lag_dev,
3810                                   u16 *p_lag_id)
3811 {
3812         struct mlxsw_sp_upper *lag;
3813         int free_lag_id = -1;
3814         int i;
3815
3816         for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
3817                 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
3818                 if (lag->ref_count) {
3819                         if (lag->dev == lag_dev) {
3820                                 *p_lag_id = i;
3821                                 return 0;
3822                         }
3823                 } else if (free_lag_id < 0) {
3824                         free_lag_id = i;
3825                 }
3826         }
3827         if (free_lag_id < 0)
3828                 return -EBUSY;
3829         *p_lag_id = free_lag_id;
3830         return 0;
3831 }
3832
3833 static bool
3834 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
3835                           struct net_device *lag_dev,
3836                           struct netdev_lag_upper_info *lag_upper_info)
3837 {
3838         u16 lag_id;
3839
3840         if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
3841                 return false;
3842         if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
3843                 return false;
3844         return true;
3845 }
3846
3847 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
3848                                        u16 lag_id, u8 *p_port_index)
3849 {
3850         int i;
3851
3852         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
3853                 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
3854                         *p_port_index = i;
3855                         return 0;
3856                 }
3857         }
3858         return -EBUSY;
3859 }
3860
3861 static void
3862 mlxsw_sp_port_pvid_vport_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
3863                                   u16 lag_id)
3864 {
3865         struct mlxsw_sp_port *mlxsw_sp_vport;
3866         struct mlxsw_sp_fid *f;
3867
3868         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
3869         if (WARN_ON(!mlxsw_sp_vport))
3870                 return;
3871
3872         /* If vPort is assigned a RIF, then leave it since it's no
3873          * longer valid.
3874          */
3875         f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3876         if (f)
3877                 f->leave(mlxsw_sp_vport);
3878
3879         mlxsw_sp_vport->lag_id = lag_id;
3880         mlxsw_sp_vport->lagged = 1;
3881 }
3882
3883 static void
3884 mlxsw_sp_port_pvid_vport_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3885 {
3886         struct mlxsw_sp_port *mlxsw_sp_vport;
3887         struct mlxsw_sp_fid *f;
3888
3889         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
3890         if (WARN_ON(!mlxsw_sp_vport))
3891                 return;
3892
3893         f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3894         if (f)
3895                 f->leave(mlxsw_sp_vport);
3896
3897         mlxsw_sp_vport->lagged = 0;
3898 }
3899
3900 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
3901                                   struct net_device *lag_dev)
3902 {
3903         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3904         struct mlxsw_sp_upper *lag;
3905         u16 lag_id;
3906         u8 port_index;
3907         int err;
3908
3909         err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
3910         if (err)
3911                 return err;
3912         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
3913         if (!lag->ref_count) {
3914                 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
3915                 if (err)
3916                         return err;
3917                 lag->dev = lag_dev;
3918         }
3919
3920         err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
3921         if (err)
3922                 return err;
3923         err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
3924         if (err)
3925                 goto err_col_port_add;
3926         err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
3927         if (err)
3928                 goto err_col_port_enable;
3929
3930         mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
3931                                    mlxsw_sp_port->local_port);
3932         mlxsw_sp_port->lag_id = lag_id;
3933         mlxsw_sp_port->lagged = 1;
3934         lag->ref_count++;
3935
3936         mlxsw_sp_port_pvid_vport_lag_join(mlxsw_sp_port, lag_id);
3937
3938         return 0;
3939
3940 err_col_port_enable:
3941         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
3942 err_col_port_add:
3943         if (!lag->ref_count)
3944                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
3945         return err;
3946 }
3947
3948 static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
3949                                     struct net_device *lag_dev)
3950 {
3951         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3952         u16 lag_id = mlxsw_sp_port->lag_id;
3953         struct mlxsw_sp_upper *lag;
3954
3955         if (!mlxsw_sp_port->lagged)
3956                 return;
3957         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
3958         WARN_ON(lag->ref_count == 0);
3959
3960         mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
3961         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
3962
3963         if (mlxsw_sp_port->bridged) {
3964                 mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
3965                 mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
3966         }
3967
3968         if (lag->ref_count == 1)
3969                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
3970
3971         mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
3972                                      mlxsw_sp_port->local_port);
3973         mlxsw_sp_port->lagged = 0;
3974         lag->ref_count--;
3975
3976         mlxsw_sp_port_pvid_vport_lag_leave(mlxsw_sp_port);
3977 }
3978
3979 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
3980                                       u16 lag_id)
3981 {
3982         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3983         char sldr_pl[MLXSW_REG_SLDR_LEN];
3984
3985         mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
3986                                          mlxsw_sp_port->local_port);
3987         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3988 }
3989
3990 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
3991                                          u16 lag_id)
3992 {
3993         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3994         char sldr_pl[MLXSW_REG_SLDR_LEN];
3995
3996         mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
3997                                             mlxsw_sp_port->local_port);
3998         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3999 }
4000
4001 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
4002                                        bool lag_tx_enabled)
4003 {
4004         if (lag_tx_enabled)
4005                 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
4006                                                   mlxsw_sp_port->lag_id);
4007         else
4008                 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
4009                                                      mlxsw_sp_port->lag_id);
4010 }
4011
4012 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
4013                                      struct netdev_lag_lower_state_info *info)
4014 {
4015         return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
4016 }
4017
4018 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
4019                                    struct net_device *vlan_dev)
4020 {
4021         struct mlxsw_sp_port *mlxsw_sp_vport;
4022         u16 vid = vlan_dev_vlan_id(vlan_dev);
4023
4024         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4025         if (WARN_ON(!mlxsw_sp_vport))
4026                 return -EINVAL;
4027
4028         mlxsw_sp_vport->dev = vlan_dev;
4029
4030         return 0;
4031 }
4032
4033 static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
4034                                       struct net_device *vlan_dev)
4035 {
4036         struct mlxsw_sp_port *mlxsw_sp_vport;
4037         u16 vid = vlan_dev_vlan_id(vlan_dev);
4038
4039         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4040         if (WARN_ON(!mlxsw_sp_vport))
4041                 return;
4042
4043         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
4044 }
4045
4046 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
4047                                                unsigned long event, void *ptr)
4048 {
4049         struct netdev_notifier_changeupper_info *info;
4050         struct mlxsw_sp_port *mlxsw_sp_port;
4051         struct net_device *upper_dev;
4052         struct mlxsw_sp *mlxsw_sp;
4053         int err = 0;
4054
4055         mlxsw_sp_port = netdev_priv(dev);
4056         mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4057         info = ptr;
4058
4059         switch (event) {
4060         case NETDEV_PRECHANGEUPPER:
4061                 upper_dev = info->upper_dev;
4062                 if (!is_vlan_dev(upper_dev) &&
4063                     !netif_is_lag_master(upper_dev) &&
4064                     !netif_is_bridge_master(upper_dev))
4065                         return -EINVAL;
4066                 if (!info->linking)
4067                         break;
4068                 /* HW limitation forbids to put ports to multiple bridges. */
4069                 if (netif_is_bridge_master(upper_dev) &&
4070                     !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
4071                         return -EINVAL;
4072                 if (netif_is_lag_master(upper_dev) &&
4073                     !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
4074                                                info->upper_info))
4075                         return -EINVAL;
4076                 if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev))
4077                         return -EINVAL;
4078                 if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
4079                     !netif_is_lag_master(vlan_dev_real_dev(upper_dev)))
4080                         return -EINVAL;
4081                 break;
4082         case NETDEV_CHANGEUPPER:
4083                 upper_dev = info->upper_dev;
4084                 if (is_vlan_dev(upper_dev)) {
4085                         if (info->linking)
4086                                 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
4087                                                               upper_dev);
4088                         else
4089                                  mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
4090                                                            upper_dev);
4091                 } else if (netif_is_bridge_master(upper_dev)) {
4092                         if (info->linking)
4093                                 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
4094                                                                 upper_dev);
4095                         else
4096                                 mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4097                 } else if (netif_is_lag_master(upper_dev)) {
4098                         if (info->linking)
4099                                 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
4100                                                              upper_dev);
4101                         else
4102                                 mlxsw_sp_port_lag_leave(mlxsw_sp_port,
4103                                                         upper_dev);
4104                 } else {
4105                         err = -EINVAL;
4106                         WARN_ON(1);
4107                 }
4108                 break;
4109         }
4110
4111         return err;
4112 }
4113
4114 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
4115                                                unsigned long event, void *ptr)
4116 {
4117         struct netdev_notifier_changelowerstate_info *info;
4118         struct mlxsw_sp_port *mlxsw_sp_port;
4119         int err;
4120
4121         mlxsw_sp_port = netdev_priv(dev);
4122         info = ptr;
4123
4124         switch (event) {
4125         case NETDEV_CHANGELOWERSTATE:
4126                 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
4127                         err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
4128                                                         info->lower_state_info);
4129                         if (err)
4130                                 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
4131                 }
4132                 break;
4133         }
4134
4135         return 0;
4136 }
4137
4138 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
4139                                          unsigned long event, void *ptr)
4140 {
4141         switch (event) {
4142         case NETDEV_PRECHANGEUPPER:
4143         case NETDEV_CHANGEUPPER:
4144                 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
4145         case NETDEV_CHANGELOWERSTATE:
4146                 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
4147         }
4148
4149         return 0;
4150 }
4151
4152 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
4153                                         unsigned long event, void *ptr)
4154 {
4155         struct net_device *dev;
4156         struct list_head *iter;
4157         int ret;
4158
4159         netdev_for_each_lower_dev(lag_dev, dev, iter) {
4160                 if (mlxsw_sp_port_dev_check(dev)) {
4161                         ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4162                         if (ret)
4163                                 return ret;
4164                 }
4165         }
4166
4167         return 0;
4168 }
4169
4170 static int mlxsw_sp_master_bridge_vlan_link(struct mlxsw_sp *mlxsw_sp,
4171                                             struct net_device *vlan_dev)
4172 {
4173         u16 fid = vlan_dev_vlan_id(vlan_dev);
4174         struct mlxsw_sp_fid *f;
4175
4176         f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4177         if (!f) {
4178                 f = mlxsw_sp_fid_create(mlxsw_sp, fid);
4179                 if (IS_ERR(f))
4180                         return PTR_ERR(f);
4181         }
4182
4183         f->ref_count++;
4184
4185         return 0;
4186 }
4187
4188 static void mlxsw_sp_master_bridge_vlan_unlink(struct mlxsw_sp *mlxsw_sp,
4189                                                struct net_device *vlan_dev)
4190 {
4191         u16 fid = vlan_dev_vlan_id(vlan_dev);
4192         struct mlxsw_sp_fid *f;
4193
4194         f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4195         if (f && f->r)
4196                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4197         if (f && --f->ref_count == 0)
4198                 mlxsw_sp_fid_destroy(mlxsw_sp, f);
4199 }
4200
4201 static int mlxsw_sp_netdevice_bridge_event(struct net_device *br_dev,
4202                                            unsigned long event, void *ptr)
4203 {
4204         struct netdev_notifier_changeupper_info *info;
4205         struct net_device *upper_dev;
4206         struct mlxsw_sp *mlxsw_sp;
4207         int err;
4208
4209         mlxsw_sp = mlxsw_sp_lower_get(br_dev);
4210         if (!mlxsw_sp)
4211                 return 0;
4212         if (br_dev != mlxsw_sp->master_bridge.dev)
4213                 return 0;
4214
4215         info = ptr;
4216
4217         switch (event) {
4218         case NETDEV_CHANGEUPPER:
4219                 upper_dev = info->upper_dev;
4220                 if (!is_vlan_dev(upper_dev))
4221                         break;
4222                 if (info->linking) {
4223                         err = mlxsw_sp_master_bridge_vlan_link(mlxsw_sp,
4224                                                                upper_dev);
4225                         if (err)
4226                                 return err;
4227                 } else {
4228                         mlxsw_sp_master_bridge_vlan_unlink(mlxsw_sp, upper_dev);
4229                 }
4230                 break;
4231         }
4232
4233         return 0;
4234 }
4235
4236 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
4237 {
4238         return find_first_zero_bit(mlxsw_sp->vfids.mapped,
4239                                    MLXSW_SP_VFID_MAX);
4240 }
4241
4242 static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
4243 {
4244         char sfmr_pl[MLXSW_REG_SFMR_LEN];
4245
4246         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
4247         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
4248 }
4249
4250 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
4251
4252 static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
4253                                                  struct net_device *br_dev)
4254 {
4255         struct device *dev = mlxsw_sp->bus_info->dev;
4256         struct mlxsw_sp_fid *f;
4257         u16 vfid, fid;
4258         int err;
4259
4260         vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
4261         if (vfid == MLXSW_SP_VFID_MAX) {
4262                 dev_err(dev, "No available vFIDs\n");
4263                 return ERR_PTR(-ERANGE);
4264         }
4265
4266         fid = mlxsw_sp_vfid_to_fid(vfid);
4267         err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
4268         if (err) {
4269                 dev_err(dev, "Failed to create FID=%d\n", fid);
4270                 return ERR_PTR(err);
4271         }
4272
4273         f = kzalloc(sizeof(*f), GFP_KERNEL);
4274         if (!f)
4275                 goto err_allocate_vfid;
4276
4277         f->leave = mlxsw_sp_vport_vfid_leave;
4278         f->fid = fid;
4279         f->dev = br_dev;
4280
4281         list_add(&f->list, &mlxsw_sp->vfids.list);
4282         set_bit(vfid, mlxsw_sp->vfids.mapped);
4283
4284         return f;
4285
4286 err_allocate_vfid:
4287         mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4288         return ERR_PTR(-ENOMEM);
4289 }
4290
4291 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
4292                                   struct mlxsw_sp_fid *f)
4293 {
4294         u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
4295         u16 fid = f->fid;
4296
4297         clear_bit(vfid, mlxsw_sp->vfids.mapped);
4298         list_del(&f->list);
4299
4300         if (f->r)
4301                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4302
4303         kfree(f);
4304
4305         mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4306 }
4307
4308 static int mlxsw_sp_vport_fid_map(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
4309                                   bool valid)
4310 {
4311         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
4312         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4313
4314         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport, mt, valid, fid,
4315                                             vid);
4316 }
4317
4318 static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
4319                                     struct net_device *br_dev)
4320 {
4321         struct mlxsw_sp_fid *f;
4322         int err;
4323
4324         f = mlxsw_sp_vfid_find(mlxsw_sp_vport->mlxsw_sp, br_dev);
4325         if (!f) {
4326                 f = mlxsw_sp_vfid_create(mlxsw_sp_vport->mlxsw_sp, br_dev);
4327                 if (IS_ERR(f))
4328                         return PTR_ERR(f);
4329         }
4330
4331         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
4332         if (err)
4333                 goto err_vport_flood_set;
4334
4335         err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
4336         if (err)
4337                 goto err_vport_fid_map;
4338
4339         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
4340         f->ref_count++;
4341
4342         netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", f->fid);
4343
4344         return 0;
4345
4346 err_vport_fid_map:
4347         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
4348 err_vport_flood_set:
4349         if (!f->ref_count)
4350                 mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4351         return err;
4352 }
4353
4354 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4355 {
4356         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4357
4358         netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
4359
4360         mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
4361
4362         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
4363
4364         mlxsw_sp_port_fdb_flush(mlxsw_sp_vport, f->fid);
4365
4366         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
4367         if (--f->ref_count == 0)
4368                 mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4369 }
4370
4371 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
4372                                       struct net_device *br_dev)
4373 {
4374         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4375         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4376         struct net_device *dev = mlxsw_sp_vport->dev;
4377         int err;
4378
4379         if (f && !WARN_ON(!f->leave))
4380                 f->leave(mlxsw_sp_vport);
4381
4382         err = mlxsw_sp_vport_vfid_join(mlxsw_sp_vport, br_dev);
4383         if (err) {
4384                 netdev_err(dev, "Failed to join vFID\n");
4385                 return err;
4386         }
4387
4388         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
4389         if (err) {
4390                 netdev_err(dev, "Failed to enable learning\n");
4391                 goto err_port_vid_learning_set;
4392         }
4393
4394         mlxsw_sp_vport->learning = 1;
4395         mlxsw_sp_vport->learning_sync = 1;
4396         mlxsw_sp_vport->uc_flood = 1;
4397         mlxsw_sp_vport->bridged = 1;
4398
4399         return 0;
4400
4401 err_port_vid_learning_set:
4402         mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4403         return err;
4404 }
4405
4406 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4407 {
4408         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4409
4410         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
4411
4412         mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4413
4414         mlxsw_sp_vport->learning = 0;
4415         mlxsw_sp_vport->learning_sync = 0;
4416         mlxsw_sp_vport->uc_flood = 0;
4417         mlxsw_sp_vport->bridged = 0;
4418 }
4419
4420 static bool
4421 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
4422                                   const struct net_device *br_dev)
4423 {
4424         struct mlxsw_sp_port *mlxsw_sp_vport;
4425
4426         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
4427                             vport.list) {
4428                 struct net_device *dev = mlxsw_sp_vport_dev_get(mlxsw_sp_vport);
4429
4430                 if (dev && dev == br_dev)
4431                         return false;
4432         }
4433
4434         return true;
4435 }
4436
4437 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
4438                                           unsigned long event, void *ptr,
4439                                           u16 vid)
4440 {
4441         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
4442         struct netdev_notifier_changeupper_info *info = ptr;
4443         struct mlxsw_sp_port *mlxsw_sp_vport;
4444         struct net_device *upper_dev;
4445         int err = 0;
4446
4447         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4448
4449         switch (event) {
4450         case NETDEV_PRECHANGEUPPER:
4451                 upper_dev = info->upper_dev;
4452                 if (!netif_is_bridge_master(upper_dev))
4453                         return -EINVAL;
4454                 if (!info->linking)
4455                         break;
4456                 /* We can't have multiple VLAN interfaces configured on
4457                  * the same port and being members in the same bridge.
4458                  */
4459                 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
4460                                                        upper_dev))
4461                         return -EINVAL;
4462                 break;
4463         case NETDEV_CHANGEUPPER:
4464                 upper_dev = info->upper_dev;
4465                 if (info->linking) {
4466                         if (WARN_ON(!mlxsw_sp_vport))
4467                                 return -EINVAL;
4468                         err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
4469                                                          upper_dev);
4470                 } else {
4471                         if (!mlxsw_sp_vport)
4472                                 return 0;
4473                         mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
4474                 }
4475         }
4476
4477         return err;
4478 }
4479
4480 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
4481                                               unsigned long event, void *ptr,
4482                                               u16 vid)
4483 {
4484         struct net_device *dev;
4485         struct list_head *iter;
4486         int ret;
4487
4488         netdev_for_each_lower_dev(lag_dev, dev, iter) {
4489                 if (mlxsw_sp_port_dev_check(dev)) {
4490                         ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
4491                                                              vid);
4492                         if (ret)
4493                                 return ret;
4494                 }
4495         }
4496
4497         return 0;
4498 }
4499
4500 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
4501                                          unsigned long event, void *ptr)
4502 {
4503         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
4504         u16 vid = vlan_dev_vlan_id(vlan_dev);
4505
4506         if (mlxsw_sp_port_dev_check(real_dev))
4507                 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
4508                                                       vid);
4509         else if (netif_is_lag_master(real_dev))
4510                 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
4511                                                           vid);
4512
4513         return 0;
4514 }
4515
4516 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
4517                                     unsigned long event, void *ptr)
4518 {
4519         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4520         int err = 0;
4521
4522         if (event == NETDEV_CHANGEADDR || event == NETDEV_CHANGEMTU)
4523                 err = mlxsw_sp_netdevice_router_port_event(dev);
4524         else if (mlxsw_sp_port_dev_check(dev))
4525                 err = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4526         else if (netif_is_lag_master(dev))
4527                 err = mlxsw_sp_netdevice_lag_event(dev, event, ptr);
4528         else if (netif_is_bridge_master(dev))
4529                 err = mlxsw_sp_netdevice_bridge_event(dev, event, ptr);
4530         else if (is_vlan_dev(dev))
4531                 err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
4532
4533         return notifier_from_errno(err);
4534 }
4535
4536 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
4537         .notifier_call = mlxsw_sp_netdevice_event,
4538 };
4539
4540 static struct notifier_block mlxsw_sp_inetaddr_nb __read_mostly = {
4541         .notifier_call = mlxsw_sp_inetaddr_event,
4542         .priority = 10, /* Must be called before FIB notifier block */
4543 };
4544
4545 static struct notifier_block mlxsw_sp_router_netevent_nb __read_mostly = {
4546         .notifier_call = mlxsw_sp_router_netevent_event,
4547 };
4548
4549 static int __init mlxsw_sp_module_init(void)
4550 {
4551         int err;
4552
4553         register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4554         register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4555         register_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4556
4557         err = mlxsw_core_driver_register(&mlxsw_sp_driver);
4558         if (err)
4559                 goto err_core_driver_register;
4560         return 0;
4561
4562 err_core_driver_register:
4563         unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4564         unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4565         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4566         return err;
4567 }
4568
4569 static void __exit mlxsw_sp_module_exit(void)
4570 {
4571         mlxsw_core_driver_unregister(&mlxsw_sp_driver);
4572         unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4573         unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4574         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4575 }
4576
4577 module_init(mlxsw_sp_module_init);
4578 module_exit(mlxsw_sp_module_exit);
4579
4580 MODULE_LICENSE("Dual BSD/GPL");
4581 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
4582 MODULE_DESCRIPTION("Mellanox Spectrum driver");
4583 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);