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 = 1;
 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 static struct mlxsw_sp_span_entry *
 252 mlxsw_sp_span_entry_find(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 253 {
 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 == local_port)
 260                         return curr;
 261         }
 262         return NULL;
 263 }
 264
 265 static struct mlxsw_sp_span_entry
 266 *mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
 267 {
 268         struct mlxsw_sp_span_entry *span_entry;
 269
 270         span_entry = mlxsw_sp_span_entry_find(port->mlxsw_sp,
 271                                               port->local_port);
 272         if (span_entry) {
 273                 /* Already exists, just take a reference */
 274                 span_entry->ref_count++;
 275                 return span_entry;
 276         }
 277
 278         return mlxsw_sp_span_entry_create(port);
 279 }
 280
 281 static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
 282                                    struct mlxsw_sp_span_entry *span_entry)
 283 {
 284         WARN_ON(!span_entry->ref_count);
 285         if (--span_entry->ref_count == 0)
 286                 mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
 287         return 0;
 288 }
 289
 290 static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
 291 {
 292         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 293         struct mlxsw_sp_span_inspected_port *p;
 294         int i;
 295
 296         for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
 297                 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
 298
 299                 list_for_each_entry(p, &curr->bound_ports_list, list)
 300                         if (p->local_port == port->local_port &&
 301                             p->type == MLXSW_SP_SPAN_EGRESS)
 302                                 return true;
 303         }
 304
 305         return false;
 306 }
 307
 308 static int mlxsw_sp_span_mtu_to_buffsize(int mtu)
 309 {
 310         return MLXSW_SP_BYTES_TO_CELLS(mtu * 5 / 2) + 1;
 311 }
 312
 313 static int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
 314 {
 315         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 316         char sbib_pl[MLXSW_REG_SBIB_LEN];
 317         int err;
 318
 319         /* If port is egress mirrored, the shared buffer size should be
 320          * updated according to the mtu value
 321          */
 322         if (mlxsw_sp_span_is_egress_mirror(port)) {
 323                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
 324                                     mlxsw_sp_span_mtu_to_buffsize(mtu));
 325                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 326                 if (err) {
 327                         netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
 328                         return err;
 329                 }
 330         }
 331
 332         return 0;
 333 }
 334
 335 static struct mlxsw_sp_span_inspected_port *
 336 mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
 337                                     struct mlxsw_sp_span_entry *span_entry)
 338 {
 339         struct mlxsw_sp_span_inspected_port *p;
 340
 341         list_for_each_entry(p, &span_entry->bound_ports_list, list)
 342                 if (port->local_port == p->local_port)
 343                         return p;
 344         return NULL;
 345 }
 346
 347 static int
 348 mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
 349                                   struct mlxsw_sp_span_entry *span_entry,
 350                                   enum mlxsw_sp_span_type type)
 351 {
 352         struct mlxsw_sp_span_inspected_port *inspected_port;
 353         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 354         char mpar_pl[MLXSW_REG_MPAR_LEN];
 355         char sbib_pl[MLXSW_REG_SBIB_LEN];
 356         int pa_id = span_entry->id;
 357         int err;
 358
 359         /* if it is an egress SPAN, bind a shared buffer to it */
 360         if (type == MLXSW_SP_SPAN_EGRESS) {
 361                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
 362                                     mlxsw_sp_span_mtu_to_buffsize(port->dev->mtu));
 363                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 364                 if (err) {
 365                         netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
 366                         return err;
 367                 }
 368         }
 369
 370         /* bind the port to the SPAN entry */
 371         mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
 372                             (enum mlxsw_reg_mpar_i_e) type, true, pa_id);
 373         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
 374         if (err)
 375                 goto err_mpar_reg_write;
 376
 377         inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
 378         if (!inspected_port) {
 379                 err = -ENOMEM;
 380                 goto err_inspected_port_alloc;
 381         }
 382         inspected_port->local_port = port->local_port;
 383         inspected_port->type = type;
 384         list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);
 385
 386         return 0;
 387
 388 err_mpar_reg_write:
 389 err_inspected_port_alloc:
 390         if (type == MLXSW_SP_SPAN_EGRESS) {
 391                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
 392                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 393         }
 394         return err;
 395 }
 396
 397 static void
 398 mlxsw_sp_span_inspected_port_unbind(struct mlxsw_sp_port *port,
 399                                     struct mlxsw_sp_span_entry *span_entry,
 400                                     enum mlxsw_sp_span_type type)
 401 {
 402         struct mlxsw_sp_span_inspected_port *inspected_port;
 403         struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
 404         char mpar_pl[MLXSW_REG_MPAR_LEN];
 405         char sbib_pl[MLXSW_REG_SBIB_LEN];
 406         int pa_id = span_entry->id;
 407
 408         inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
 409         if (!inspected_port)
 410                 return;
 411
 412         /* remove the inspected port */
 413         mlxsw_reg_mpar_pack(mpar_pl, port->local_port,
 414                             (enum mlxsw_reg_mpar_i_e) type, false, pa_id);
 415         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
 416
 417         /* remove the SBIB buffer if it was egress SPAN */
 418         if (type == MLXSW_SP_SPAN_EGRESS) {
 419                 mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
 420                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
 421         }
 422
 423         mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
 424
 425         list_del(&inspected_port->list);
 426         kfree(inspected_port);
 427 }
 428
 429 static int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
 430                                     struct mlxsw_sp_port *to,
 431                                     enum mlxsw_sp_span_type type)
 432 {
 433         struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
 434         struct mlxsw_sp_span_entry *span_entry;
 435         int err;
 436
 437         span_entry = mlxsw_sp_span_entry_get(to);
 438         if (!span_entry)
 439                 return -ENOENT;
 440
 441         netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
 442                    span_entry->id);
 443
 444         err = mlxsw_sp_span_inspected_port_bind(from, span_entry, type);
 445         if (err)
 446                 goto err_port_bind;
 447
 448         return 0;
 449
 450 err_port_bind:
 451         mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
 452         return err;
 453 }
 454
 455 static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from,
 456                                         u8 destination_port,
 457                                         enum mlxsw_sp_span_type type)
 458 {
 459         struct mlxsw_sp_span_entry *span_entry;
 460
 461         span_entry = mlxsw_sp_span_entry_find(from->mlxsw_sp,
 462                                               destination_port);
 463         if (!span_entry) {
 464                 netdev_err(from->dev, "no span entry found\n");
 465                 return;
 466         }
 467
 468         netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
 469                    span_entry->id);
 470         mlxsw_sp_span_inspected_port_unbind(from, span_entry, type);
 471 }
 472
 473 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
 474                                           bool is_up)
 475 {
 476         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 477         char paos_pl[MLXSW_REG_PAOS_LEN];
 478
 479         mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
 480                             is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
 481                             MLXSW_PORT_ADMIN_STATUS_DOWN);
 482         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
 483 }
 484
 485 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
 486                                       unsigned char *addr)
 487 {
 488         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 489         char ppad_pl[MLXSW_REG_PPAD_LEN];
 490
 491         mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
 492         mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
 493         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
 494 }
 495
 496 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
 497 {
 498         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 499         unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
 500
 501         ether_addr_copy(addr, mlxsw_sp->base_mac);
 502         addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
 503         return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
 504 }
 505
 506 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
 507 {
 508         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 509         char pmtu_pl[MLXSW_REG_PMTU_LEN];
 510         int max_mtu;
 511         int err;
 512
 513         mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
 514         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
 515         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 516         if (err)
 517                 return err;
 518         max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
 519
 520         if (mtu > max_mtu)
 521                 return -EINVAL;
 522
 523         mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
 524         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
 525 }
 526
 527 static int __mlxsw_sp_port_swid_set(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 528                                     u8 swid)
 529 {
 530         char pspa_pl[MLXSW_REG_PSPA_LEN];
 531
 532         mlxsw_reg_pspa_pack(pspa_pl, swid, local_port);
 533         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
 534 }
 535
 536 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
 537 {
 538         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 539
 540         return __mlxsw_sp_port_swid_set(mlxsw_sp, mlxsw_sp_port->local_port,
 541                                         swid);
 542 }
 543
 544 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
 545                                      bool enable)
 546 {
 547         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 548         char svpe_pl[MLXSW_REG_SVPE_LEN];
 549
 550         mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
 551         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
 552 }
 553
 554 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 555                                  enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
 556                                  u16 vid)
 557 {
 558         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 559         char svfa_pl[MLXSW_REG_SVFA_LEN];
 560
 561         mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
 562                             fid, vid);
 563         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 564 }
 565
 566 int __mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 567                                      u16 vid_begin, u16 vid_end,
 568                                      bool learn_enable)
 569 {
 570         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 571         char *spvmlr_pl;
 572         int err;
 573
 574         spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
 575         if (!spvmlr_pl)
 576                 return -ENOMEM;
 577         mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid_begin,
 578                               vid_end, learn_enable);
 579         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
 580         kfree(spvmlr_pl);
 581         return err;
 582 }
 583
 584 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 585                                           u16 vid, bool learn_enable)
 586 {
 587         return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 588                                                 learn_enable);
 589 }
 590
 591 static int
 592 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
 593 {
 594         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 595         char sspr_pl[MLXSW_REG_SSPR_LEN];
 596
 597         mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
 598         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
 599 }
 600
 601 static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
 602                                          u8 local_port, u8 *p_module,
 603                                          u8 *p_width, u8 *p_lane)
 604 {
 605         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 606         int err;
 607
 608         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 609         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 610         if (err)
 611                 return err;
 612         *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
 613         *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
 614         *p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
 615         return 0;
 616 }
 617
 618 static int mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 619                                     u8 module, u8 width, u8 lane)
 620 {
 621         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 622         int i;
 623
 624         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 625         mlxsw_reg_pmlp_width_set(pmlp_pl, width);
 626         for (i = 0; i < width; i++) {
 627                 mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
 628                 mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i);  /* Rx & Tx */
 629         }
 630
 631         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 632 }
 633
 634 static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 635 {
 636         char pmlp_pl[MLXSW_REG_PMLP_LEN];
 637
 638         mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 639         mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
 640         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 641 }
 642
 643 static int mlxsw_sp_port_open(struct net_device *dev)
 644 {
 645         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 646         int err;
 647
 648         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
 649         if (err)
 650                 return err;
 651         netif_start_queue(dev);
 652         return 0;
 653 }
 654
 655 static int mlxsw_sp_port_stop(struct net_device *dev)
 656 {
 657         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 658
 659         netif_stop_queue(dev);
 660         return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
 661 }
 662
 663 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
 664                                       struct net_device *dev)
 665 {
 666         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 667         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 668         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
 669         const struct mlxsw_tx_info tx_info = {
 670                 .local_port = mlxsw_sp_port->local_port,
 671                 .is_emad = false,
 672         };
 673         u64 len;
 674         int err;
 675
 676         if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
 677                 return NETDEV_TX_BUSY;
 678
 679         if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
 680                 struct sk_buff *skb_orig = skb;
 681
 682                 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
 683                 if (!skb) {
 684                         this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 685                         dev_kfree_skb_any(skb_orig);
 686                         return NETDEV_TX_OK;
 687                 }
 688                 dev_consume_skb_any(skb_orig);
 689         }
 690
 691         if (eth_skb_pad(skb)) {
 692                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 693                 return NETDEV_TX_OK;
 694         }
 695
 696         mlxsw_sp_txhdr_construct(skb, &tx_info);
 697         /* TX header is consumed by HW on the way so we shouldn't count its
 698          * bytes as being sent.
 699          */
 700         len = skb->len - MLXSW_TXHDR_LEN;
 701
 702         /* Due to a race we might fail here because of a full queue. In that
 703          * unlikely case we simply drop the packet.
 704          */
 705         err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
 706
 707         if (!err) {
 708                 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
 709                 u64_stats_update_begin(&pcpu_stats->syncp);
 710                 pcpu_stats->tx_packets++;
 711                 pcpu_stats->tx_bytes += len;
 712                 u64_stats_update_end(&pcpu_stats->syncp);
 713         } else {
 714                 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
 715                 dev_kfree_skb_any(skb);
 716         }
 717         return NETDEV_TX_OK;
 718 }
 719
 720 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
 721 {
 722 }
 723
 724 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
 725 {
 726         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 727         struct sockaddr *addr = p;
 728         int err;
 729
 730         if (!is_valid_ether_addr(addr->sa_data))
 731                 return -EADDRNOTAVAIL;
 732
 733         err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
 734         if (err)
 735                 return err;
 736         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 737         return 0;
 738 }
 739
 740 static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
 741                                  bool pause_en, bool pfc_en, u16 delay)
 742 {
 743         u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
 744
 745         delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
 746                          MLXSW_SP_PAUSE_DELAY;
 747
 748         if (pause_en || pfc_en)
 749                 mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
 750                                                     pg_size + delay, pg_size);
 751         else
 752                 mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
 753 }
 754
 755 int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
 756                                  u8 *prio_tc, bool pause_en,
 757                                  struct ieee_pfc *my_pfc)
 758 {
 759         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 760         u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
 761         u16 delay = !!my_pfc ? my_pfc->delay : 0;
 762         char pbmc_pl[MLXSW_REG_PBMC_LEN];
 763         int i, j, err;
 764
 765         mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
 766         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
 767         if (err)
 768                 return err;
 769
 770         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 771                 bool configure = false;
 772                 bool pfc = false;
 773
 774                 for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
 775                         if (prio_tc[j] == i) {
 776                                 pfc = pfc_en & BIT(j);
 777                                 configure = true;
 778                                 break;
 779                         }
 780                 }
 781
 782                 if (!configure)
 783                         continue;
 784                 mlxsw_sp_pg_buf_pack(pbmc_pl, i, mtu, pause_en, pfc, delay);
 785         }
 786
 787         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
 788 }
 789
 790 static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
 791                                       int mtu, bool pause_en)
 792 {
 793         u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
 794         bool dcb_en = !!mlxsw_sp_port->dcb.ets;
 795         struct ieee_pfc *my_pfc;
 796         u8 *prio_tc;
 797
 798         prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
 799         my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
 800
 801         return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
 802                                             pause_en, my_pfc);
 803 }
 804
 805 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
 806 {
 807         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 808         bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
 809         int err;
 810
 811         err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
 812         if (err)
 813                 return err;
 814         err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
 815         if (err)
 816                 goto err_span_port_mtu_update;
 817         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
 818         if (err)
 819                 goto err_port_mtu_set;
 820         dev->mtu = mtu;
 821         return 0;
 822
 823 err_port_mtu_set:
 824         mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
 825 err_span_port_mtu_update:
 826         mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
 827         return err;
 828 }
 829
 830 static int
 831 mlxsw_sp_port_get_sw_stats64(const struct net_device *dev,
 832                              struct rtnl_link_stats64 *stats)
 833 {
 834         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 835         struct mlxsw_sp_port_pcpu_stats *p;
 836         u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
 837         u32 tx_dropped = 0;
 838         unsigned int start;
 839         int i;
 840
 841         for_each_possible_cpu(i) {
 842                 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
 843                 do {
 844                         start = u64_stats_fetch_begin_irq(&p->syncp);
 845                         rx_packets      = p->rx_packets;
 846                         rx_bytes        = p->rx_bytes;
 847                         tx_packets      = p->tx_packets;
 848                         tx_bytes        = p->tx_bytes;
 849                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 850
 851                 stats->rx_packets       += rx_packets;
 852                 stats->rx_bytes         += rx_bytes;
 853                 stats->tx_packets       += tx_packets;
 854                 stats->tx_bytes         += tx_bytes;
 855                 /* tx_dropped is u32, updated without syncp protection. */
 856                 tx_dropped      += p->tx_dropped;
 857         }
 858         stats->tx_dropped       = tx_dropped;
 859         return 0;
 860 }
 861
 862 static bool mlxsw_sp_port_has_offload_stats(int attr_id)
 863 {
 864         switch (attr_id) {
 865         case IFLA_OFFLOAD_XSTATS_CPU_HIT:
 866                 return true;
 867         }
 868
 869         return false;
 870 }
 871
 872 static int mlxsw_sp_port_get_offload_stats(int attr_id, const struct net_device *dev,
 873                                            void *sp)
 874 {
 875         switch (attr_id) {
 876         case IFLA_OFFLOAD_XSTATS_CPU_HIT:
 877                 return mlxsw_sp_port_get_sw_stats64(dev, sp);
 878         }
 879
 880         return -EINVAL;
 881 }
 882
 883 static int mlxsw_sp_port_get_stats_raw(struct net_device *dev, int grp,
 884                                        int prio, char *ppcnt_pl)
 885 {
 886         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 887         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 888
 889         mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
 890         return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
 891 }
 892
 893 static int mlxsw_sp_port_get_hw_stats(struct net_device *dev,
 894                                       struct rtnl_link_stats64 *stats)
 895 {
 896         char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
 897         int err;
 898
 899         err = mlxsw_sp_port_get_stats_raw(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT,
 900                                           0, ppcnt_pl);
 901         if (err)
 902                 goto out;
 903
 904         stats->tx_packets =
 905                 mlxsw_reg_ppcnt_a_frames_transmitted_ok_get(ppcnt_pl);
 906         stats->rx_packets =
 907                 mlxsw_reg_ppcnt_a_frames_received_ok_get(ppcnt_pl);
 908         stats->tx_bytes =
 909                 mlxsw_reg_ppcnt_a_octets_transmitted_ok_get(ppcnt_pl);
 910         stats->rx_bytes =
 911                 mlxsw_reg_ppcnt_a_octets_received_ok_get(ppcnt_pl);
 912         stats->multicast =
 913                 mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get(ppcnt_pl);
 914
 915         stats->rx_crc_errors =
 916                 mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get(ppcnt_pl);
 917         stats->rx_frame_errors =
 918                 mlxsw_reg_ppcnt_a_alignment_errors_get(ppcnt_pl);
 919
 920         stats->rx_length_errors = (
 921                 mlxsw_reg_ppcnt_a_in_range_length_errors_get(ppcnt_pl) +
 922                 mlxsw_reg_ppcnt_a_out_of_range_length_field_get(ppcnt_pl) +
 923                 mlxsw_reg_ppcnt_a_frame_too_long_errors_get(ppcnt_pl));
 924
 925         stats->rx_errors = (stats->rx_crc_errors +
 926                 stats->rx_frame_errors + stats->rx_length_errors);
 927
 928 out:
 929         return err;
 930 }
 931
 932 static void update_stats_cache(struct work_struct *work)
 933 {
 934         struct mlxsw_sp_port *mlxsw_sp_port =
 935                 container_of(work, struct mlxsw_sp_port,
 936                              hw_stats.update_dw.work);
 937
 938         if (!netif_carrier_ok(mlxsw_sp_port->dev))
 939                 goto out;
 940
 941         mlxsw_sp_port_get_hw_stats(mlxsw_sp_port->dev,
 942                                    mlxsw_sp_port->hw_stats.cache);
 943
 944 out:
 945         mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw,
 946                                MLXSW_HW_STATS_UPDATE_TIME);
 947 }
 948
 949 /* Return the stats from a cache that is updated periodically,
 950  * as this function might get called in an atomic context.
 951  */
 952 static struct rtnl_link_stats64 *
 953 mlxsw_sp_port_get_stats64(struct net_device *dev,
 954                           struct rtnl_link_stats64 *stats)
 955 {
 956         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 957
 958         memcpy(stats, mlxsw_sp_port->hw_stats.cache, sizeof(*stats));
 959
 960         return stats;
 961 }
 962
 963 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
 964                            u16 vid_end, bool is_member, bool untagged)
 965 {
 966         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 967         char *spvm_pl;
 968         int err;
 969
 970         spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
 971         if (!spvm_pl)
 972                 return -ENOMEM;
 973
 974         mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
 975                             vid_end, is_member, untagged);
 976         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
 977         kfree(spvm_pl);
 978         return err;
 979 }
 980
 981 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
 982 {
 983         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 984         u16 vid, last_visited_vid;
 985         int err;
 986
 987         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 988                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
 989                                                    vid);
 990                 if (err) {
 991                         last_visited_vid = vid;
 992                         goto err_port_vid_to_fid_set;
 993                 }
 994         }
 995
 996         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
 997         if (err) {
 998                 last_visited_vid = VLAN_N_VID;
 999                 goto err_port_vid_to_fid_set;
1000         }
1001
1002         return 0;
1003
1004 err_port_vid_to_fid_set:
1005         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
1006                 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
1007                                              vid);
1008         return err;
1009 }
1010
1011 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
1012 {
1013         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
1014         u16 vid;
1015         int err;
1016
1017         err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
1018         if (err)
1019                 return err;
1020
1021         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1022                 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
1023                                                    vid, vid);
1024                 if (err)
1025                         return err;
1026         }
1027
1028         return 0;
1029 }
1030
1031 static struct mlxsw_sp_port *
1032 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
1033 {
1034         struct mlxsw_sp_port *mlxsw_sp_vport;
1035
1036         mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
1037         if (!mlxsw_sp_vport)
1038                 return NULL;
1039
1040         /* dev will be set correctly after the VLAN device is linked
1041          * with the real device. In case of bridge SELF invocation, dev
1042          * will remain as is.
1043          */
1044         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
1045         mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1046         mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
1047         mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
1048         mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
1049         mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
1050         mlxsw_sp_vport->vport.vid = vid;
1051
1052         list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
1053
1054         return mlxsw_sp_vport;
1055 }
1056
1057 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
1058 {
1059         list_del(&mlxsw_sp_vport->vport.list);
1060         kfree(mlxsw_sp_vport);
1061 }
1062
1063 static int mlxsw_sp_port_add_vid(struct net_device *dev,
1064                                  __be16 __always_unused proto, u16 vid)
1065 {
1066         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1067         struct mlxsw_sp_port *mlxsw_sp_vport;
1068         bool untagged = vid == 1;
1069         int err;
1070
1071         /* VLAN 0 is added to HW filter when device goes up, but it is
1072          * reserved in our case, so simply return.
1073          */
1074         if (!vid)
1075                 return 0;
1076
1077         if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
1078                 return 0;
1079
1080         mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
1081         if (!mlxsw_sp_vport)
1082                 return -ENOMEM;
1083
1084         /* When adding the first VLAN interface on a bridged port we need to
1085          * transition all the active 802.1Q bridge VLANs to use explicit
1086          * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
1087          */
1088         if (list_is_singular(&mlxsw_sp_port->vports_list)) {
1089                 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
1090                 if (err)
1091                         goto err_port_vp_mode_trans;
1092         }
1093
1094         err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
1095         if (err)
1096                 goto err_port_add_vid;
1097
1098         return 0;
1099
1100 err_port_add_vid:
1101         if (list_is_singular(&mlxsw_sp_port->vports_list))
1102                 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
1103 err_port_vp_mode_trans:
1104         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
1105         return err;
1106 }
1107
1108 static int mlxsw_sp_port_kill_vid(struct net_device *dev,
1109                                   __be16 __always_unused proto, u16 vid)
1110 {
1111         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1112         struct mlxsw_sp_port *mlxsw_sp_vport;
1113         struct mlxsw_sp_fid *f;
1114
1115         /* VLAN 0 is removed from HW filter when device goes down, but
1116          * it is reserved in our case, so simply return.
1117          */
1118         if (!vid)
1119                 return 0;
1120
1121         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
1122         if (WARN_ON(!mlxsw_sp_vport))
1123                 return 0;
1124
1125         mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
1126
1127         /* Drop FID reference. If this was the last reference the
1128          * resources will be freed.
1129          */
1130         f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
1131         if (f && !WARN_ON(!f->leave))
1132                 f->leave(mlxsw_sp_vport);
1133
1134         /* When removing the last VLAN interface on a bridged port we need to
1135          * transition all active 802.1Q bridge VLANs to use VID to FID
1136          * mappings and set port's mode to VLAN mode.
1137          */
1138         if (list_is_singular(&mlxsw_sp_port->vports_list))
1139                 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
1140
1141         mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
1142
1143         return 0;
1144 }
1145
1146 static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
1147                                             size_t len)
1148 {
1149         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1150         u8 module = mlxsw_sp_port->mapping.module;
1151         u8 width = mlxsw_sp_port->mapping.width;
1152         u8 lane = mlxsw_sp_port->mapping.lane;
1153         int err;
1154
1155         if (!mlxsw_sp_port->split)
1156                 err = snprintf(name, len, "p%d", module + 1);
1157         else
1158                 err = snprintf(name, len, "p%ds%d", module + 1,
1159                                lane / width);
1160
1161         if (err >= len)
1162                 return -EINVAL;
1163
1164         return 0;
1165 }
1166
1167 static struct mlxsw_sp_port_mall_tc_entry *
1168 mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
1169                                 unsigned long cookie) {
1170         struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1171
1172         list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
1173                 if (mall_tc_entry->cookie == cookie)
1174                         return mall_tc_entry;
1175
1176         return NULL;
1177 }
1178
1179 static int
1180 mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
1181                                       struct tc_cls_matchall_offload *cls,
1182                                       const struct tc_action *a,
1183                                       bool ingress)
1184 {
1185         struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1186         struct net *net = dev_net(mlxsw_sp_port->dev);
1187         enum mlxsw_sp_span_type span_type;
1188         struct mlxsw_sp_port *to_port;
1189         struct net_device *to_dev;
1190         int ifindex;
1191         int err;
1192
1193         ifindex = tcf_mirred_ifindex(a);
1194         to_dev = __dev_get_by_index(net, ifindex);
1195         if (!to_dev) {
1196                 netdev_err(mlxsw_sp_port->dev, "Could not find requested device\n");
1197                 return -EINVAL;
1198         }
1199
1200         if (!mlxsw_sp_port_dev_check(to_dev)) {
1201                 netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
1202                 return -ENOTSUPP;
1203         }
1204         to_port = netdev_priv(to_dev);
1205
1206         mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
1207         if (!mall_tc_entry)
1208                 return -ENOMEM;
1209
1210         mall_tc_entry->cookie = cls->cookie;
1211         mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
1212         mall_tc_entry->mirror.to_local_port = to_port->local_port;
1213         mall_tc_entry->mirror.ingress = ingress;
1214         list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
1215
1216         span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
1217         err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
1218         if (err)
1219                 goto err_mirror_add;
1220         return 0;
1221
1222 err_mirror_add:
1223         list_del(&mall_tc_entry->list);
1224         kfree(mall_tc_entry);
1225         return err;
1226 }
1227
1228 static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
1229                                           __be16 protocol,
1230                                           struct tc_cls_matchall_offload *cls,
1231                                           bool ingress)
1232 {
1233         const struct tc_action *a;
1234         LIST_HEAD(actions);
1235         int err;
1236
1237         if (!tc_single_action(cls->exts)) {
1238                 netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
1239                 return -ENOTSUPP;
1240         }
1241
1242         tcf_exts_to_list(cls->exts, &actions);
1243         list_for_each_entry(a, &actions, list) {
1244                 if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
1245                         return -ENOTSUPP;
1246
1247                 err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
1248                                                             a, ingress);
1249                 if (err)
1250                         return err;
1251         }
1252
1253         return 0;
1254 }
1255
1256 static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
1257                                            struct tc_cls_matchall_offload *cls)
1258 {
1259         struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1260         enum mlxsw_sp_span_type span_type;
1261
1262         mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
1263                                                         cls->cookie);
1264         if (!mall_tc_entry) {
1265                 netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
1266                 return;
1267         }
1268
1269         switch (mall_tc_entry->type) {
1270         case MLXSW_SP_PORT_MALL_MIRROR:
1271                 span_type = mall_tc_entry->mirror.ingress ?
1272                                 MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
1273
1274                 mlxsw_sp_span_mirror_remove(mlxsw_sp_port,
1275                                             mall_tc_entry->mirror.to_local_port,
1276                                             span_type);
1277                 break;
1278         default:
1279                 WARN_ON(1);
1280         }
1281
1282         list_del(&mall_tc_entry->list);
1283         kfree(mall_tc_entry);
1284 }
1285
1286 static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
1287                              __be16 proto, struct tc_to_netdev *tc)
1288 {
1289         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1290         bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);
1291
1292         if (tc->type == TC_SETUP_MATCHALL) {
1293                 switch (tc->cls_mall->command) {
1294                 case TC_CLSMATCHALL_REPLACE:
1295                         return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port,
1296                                                               proto,
1297                                                               tc->cls_mall,
1298                                                               ingress);
1299                 case TC_CLSMATCHALL_DESTROY:
1300                         mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port,
1301                                                        tc->cls_mall);
1302                         return 0;
1303                 default:
1304                         return -EINVAL;
1305                 }
1306         }
1307
1308         return -ENOTSUPP;
1309 }
1310
1311 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
1312         .ndo_open               = mlxsw_sp_port_open,
1313         .ndo_stop               = mlxsw_sp_port_stop,
1314         .ndo_start_xmit         = mlxsw_sp_port_xmit,
1315         .ndo_setup_tc           = mlxsw_sp_setup_tc,
1316         .ndo_set_rx_mode        = mlxsw_sp_set_rx_mode,
1317         .ndo_set_mac_address    = mlxsw_sp_port_set_mac_address,
1318         .ndo_change_mtu         = mlxsw_sp_port_change_mtu,
1319         .ndo_get_stats64        = mlxsw_sp_port_get_stats64,
1320         .ndo_has_offload_stats  = mlxsw_sp_port_has_offload_stats,
1321         .ndo_get_offload_stats  = mlxsw_sp_port_get_offload_stats,
1322         .ndo_vlan_rx_add_vid    = mlxsw_sp_port_add_vid,
1323         .ndo_vlan_rx_kill_vid   = mlxsw_sp_port_kill_vid,
1324         .ndo_neigh_construct    = mlxsw_sp_router_neigh_construct,
1325         .ndo_neigh_destroy      = mlxsw_sp_router_neigh_destroy,
1326         .ndo_fdb_add            = switchdev_port_fdb_add,
1327         .ndo_fdb_del            = switchdev_port_fdb_del,
1328         .ndo_fdb_dump           = switchdev_port_fdb_dump,
1329         .ndo_bridge_setlink     = switchdev_port_bridge_setlink,
1330         .ndo_bridge_getlink     = switchdev_port_bridge_getlink,
1331         .ndo_bridge_dellink     = switchdev_port_bridge_dellink,
1332         .ndo_get_phys_port_name = mlxsw_sp_port_get_phys_port_name,
1333 };
1334
1335 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
1336                                       struct ethtool_drvinfo *drvinfo)
1337 {
1338         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1339         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1340
1341         strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
1342         strlcpy(drvinfo->version, mlxsw_sp_driver_version,
1343                 sizeof(drvinfo->version));
1344         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
1345                  "%d.%d.%d",
1346                  mlxsw_sp->bus_info->fw_rev.major,
1347                  mlxsw_sp->bus_info->fw_rev.minor,
1348                  mlxsw_sp->bus_info->fw_rev.subminor);
1349         strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
1350                 sizeof(drvinfo->bus_info));
1351 }
1352
1353 static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
1354                                          struct ethtool_pauseparam *pause)
1355 {
1356         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1357
1358         pause->rx_pause = mlxsw_sp_port->link.rx_pause;
1359         pause->tx_pause = mlxsw_sp_port->link.tx_pause;
1360 }
1361
1362 static int mlxsw_sp_port_pause_set(struct mlxsw_sp_port *mlxsw_sp_port,
1363                                    struct ethtool_pauseparam *pause)
1364 {
1365         char pfcc_pl[MLXSW_REG_PFCC_LEN];
1366
1367         mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
1368         mlxsw_reg_pfcc_pprx_set(pfcc_pl, pause->rx_pause);
1369         mlxsw_reg_pfcc_pptx_set(pfcc_pl, pause->tx_pause);
1370
1371         return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
1372                                pfcc_pl);
1373 }
1374
1375 static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
1376                                         struct ethtool_pauseparam *pause)
1377 {
1378         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1379         bool pause_en = pause->tx_pause || pause->rx_pause;
1380         int err;
1381
1382         if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
1383                 netdev_err(dev, "PFC already enabled on port\n");
1384                 return -EINVAL;
1385         }
1386
1387         if (pause->autoneg) {
1388                 netdev_err(dev, "PAUSE frames autonegotiation isn't supported\n");
1389                 return -EINVAL;
1390         }
1391
1392         err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
1393         if (err) {
1394                 netdev_err(dev, "Failed to configure port's headroom\n");
1395                 return err;
1396         }
1397
1398         err = mlxsw_sp_port_pause_set(mlxsw_sp_port, pause);
1399         if (err) {
1400                 netdev_err(dev, "Failed to set PAUSE parameters\n");
1401                 goto err_port_pause_configure;
1402         }
1403
1404         mlxsw_sp_port->link.rx_pause = pause->rx_pause;
1405         mlxsw_sp_port->link.tx_pause = pause->tx_pause;
1406
1407         return 0;
1408
1409 err_port_pause_configure:
1410         pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
1411         mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
1412         return err;
1413 }
1414
1415 struct mlxsw_sp_port_hw_stats {
1416         char str[ETH_GSTRING_LEN];
1417         u64 (*getter)(char *payload);
1418 };
1419
1420 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
1421         {
1422                 .str = "a_frames_transmitted_ok",
1423                 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
1424         },
1425         {
1426                 .str = "a_frames_received_ok",
1427                 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
1428         },
1429         {
1430                 .str = "a_frame_check_sequence_errors",
1431                 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
1432         },
1433         {
1434                 .str = "a_alignment_errors",
1435                 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
1436         },
1437         {
1438                 .str = "a_octets_transmitted_ok",
1439                 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
1440         },
1441         {
1442                 .str = "a_octets_received_ok",
1443                 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
1444         },
1445         {
1446                 .str = "a_multicast_frames_xmitted_ok",
1447                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
1448         },
1449         {
1450                 .str = "a_broadcast_frames_xmitted_ok",
1451                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
1452         },
1453         {
1454                 .str = "a_multicast_frames_received_ok",
1455                 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
1456         },
1457         {
1458                 .str = "a_broadcast_frames_received_ok",
1459                 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
1460         },
1461         {
1462                 .str = "a_in_range_length_errors",
1463                 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
1464         },
1465         {
1466                 .str = "a_out_of_range_length_field",
1467                 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
1468         },
1469         {
1470                 .str = "a_frame_too_long_errors",
1471                 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
1472         },
1473         {
1474                 .str = "a_symbol_error_during_carrier",
1475                 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
1476         },
1477         {
1478                 .str = "a_mac_control_frames_transmitted",
1479                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
1480         },
1481         {
1482                 .str = "a_mac_control_frames_received",
1483                 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
1484         },
1485         {
1486                 .str = "a_unsupported_opcodes_received",
1487                 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
1488         },
1489         {
1490                 .str = "a_pause_mac_ctrl_frames_received",
1491                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
1492         },
1493         {
1494                 .str = "a_pause_mac_ctrl_frames_xmitted",
1495                 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
1496         },
1497 };
1498
1499 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
1500
1501 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
1502         {
1503                 .str = "rx_octets_prio",
1504                 .getter = mlxsw_reg_ppcnt_rx_octets_get,
1505         },
1506         {
1507                 .str = "rx_frames_prio",
1508                 .getter = mlxsw_reg_ppcnt_rx_frames_get,
1509         },
1510         {
1511                 .str = "tx_octets_prio",
1512                 .getter = mlxsw_reg_ppcnt_tx_octets_get,
1513         },
1514         {
1515                 .str = "tx_frames_prio",
1516                 .getter = mlxsw_reg_ppcnt_tx_frames_get,
1517         },
1518         {
1519                 .str = "rx_pause_prio",
1520                 .getter = mlxsw_reg_ppcnt_rx_pause_get,
1521         },
1522         {
1523                 .str = "rx_pause_duration_prio",
1524                 .getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
1525         },
1526         {
1527                 .str = "tx_pause_prio",
1528                 .getter = mlxsw_reg_ppcnt_tx_pause_get,
1529         },
1530         {
1531                 .str = "tx_pause_duration_prio",
1532                 .getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
1533         },
1534 };
1535
1536 #define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)
1537
1538 static u64 mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get(char *ppcnt_pl)
1539 {
1540         u64 transmit_queue = mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
1541
1542         return MLXSW_SP_CELLS_TO_BYTES(transmit_queue);
1543 }
1544
1545 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
1546         {
1547                 .str = "tc_transmit_queue_tc",
1548                 .getter = mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get,
1549         },
1550         {
1551                 .str = "tc_no_buffer_discard_uc_tc",
1552                 .getter = mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get,
1553         },
1554 };
1555
1556 #define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)
1557
1558 #define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
1559                                          (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
1560                                           MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
1561                                          IEEE_8021QAZ_MAX_TCS)
1562
1563 static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
1564 {
1565         int i;
1566
1567         for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
1568                 snprintf(*p, ETH_GSTRING_LEN, "%.29s_%.1d",
1569                          mlxsw_sp_port_hw_prio_stats[i].str, prio);
1570                 *p += ETH_GSTRING_LEN;
1571         }
1572 }
1573
1574 static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
1575 {
1576         int i;
1577
1578         for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
1579                 snprintf(*p, ETH_GSTRING_LEN, "%.29s_%.1d",
1580                          mlxsw_sp_port_hw_tc_stats[i].str, tc);
1581                 *p += ETH_GSTRING_LEN;
1582         }
1583 }
1584
1585 static void mlxsw_sp_port_get_strings(struct net_device *dev,
1586                                       u32 stringset, u8 *data)
1587 {
1588         u8 *p = data;
1589         int i;
1590
1591         switch (stringset) {
1592         case ETH_SS_STATS:
1593                 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
1594                         memcpy(p, mlxsw_sp_port_hw_stats[i].str,
1595                                ETH_GSTRING_LEN);
1596                         p += ETH_GSTRING_LEN;
1597                 }
1598
1599                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1600                         mlxsw_sp_port_get_prio_strings(&p, i);
1601
1602                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1603                         mlxsw_sp_port_get_tc_strings(&p, i);
1604
1605                 break;
1606         }
1607 }
1608
1609 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
1610                                      enum ethtool_phys_id_state state)
1611 {
1612         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1613         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1614         char mlcr_pl[MLXSW_REG_MLCR_LEN];
1615         bool active;
1616
1617         switch (state) {
1618         case ETHTOOL_ID_ACTIVE:
1619                 active = true;
1620                 break;
1621         case ETHTOOL_ID_INACTIVE:
1622                 active = false;
1623                 break;
1624         default:
1625                 return -EOPNOTSUPP;
1626         }
1627
1628         mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
1629         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
1630 }
1631
1632 static int
1633 mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
1634                                int *p_len, enum mlxsw_reg_ppcnt_grp grp)
1635 {
1636         switch (grp) {
1637         case  MLXSW_REG_PPCNT_IEEE_8023_CNT:
1638                 *p_hw_stats = mlxsw_sp_port_hw_stats;
1639                 *p_len = MLXSW_SP_PORT_HW_STATS_LEN;
1640                 break;
1641         case MLXSW_REG_PPCNT_PRIO_CNT:
1642                 *p_hw_stats = mlxsw_sp_port_hw_prio_stats;
1643                 *p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
1644                 break;
1645         case MLXSW_REG_PPCNT_TC_CNT:
1646                 *p_hw_stats = mlxsw_sp_port_hw_tc_stats;
1647                 *p_len = MLXSW_SP_PORT_HW_TC_STATS_LEN;
1648                 break;
1649         default:
1650                 WARN_ON(1);
1651                 return -ENOTSUPP;
1652         }
1653         return 0;
1654 }
1655
1656 static void __mlxsw_sp_port_get_stats(struct net_device *dev,
1657                                       enum mlxsw_reg_ppcnt_grp grp, int prio,
1658                                       u64 *data, int data_index)
1659 {
1660         struct mlxsw_sp_port_hw_stats *hw_stats;
1661         char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1662         int i, len;
1663         int err;
1664
1665         err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
1666         if (err)
1667                 return;
1668         mlxsw_sp_port_get_stats_raw(dev, grp, prio, ppcnt_pl);
1669         for (i = 0; i < len; i++)
1670                 data[data_index + i] = hw_stats[i].getter(ppcnt_pl);
1671 }
1672
1673 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1674                                     struct ethtool_stats *stats, u64 *data)
1675 {
1676         int i, data_index = 0;
1677
1678         /* IEEE 802.3 Counters */
1679         __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
1680                                   data, data_index);
1681         data_index = MLXSW_SP_PORT_HW_STATS_LEN;
1682
1683         /* Per-Priority Counters */
1684         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1685                 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
1686                                           data, data_index);
1687                 data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
1688         }
1689
1690         /* Per-TC Counters */
1691         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1692                 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
1693                                           data, data_index);
1694                 data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;
1695         }
1696 }
1697
1698 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1699 {
1700         switch (sset) {
1701         case ETH_SS_STATS:
1702                 return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
1703         default:
1704                 return -EOPNOTSUPP;
1705         }
1706 }
1707
1708 struct mlxsw_sp_port_link_mode {
1709         enum ethtool_link_mode_bit_indices mask_ethtool;
1710         u32 mask;
1711         u32 speed;
1712 };
1713
1714 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1715         {
1716                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1717                 .mask_ethtool   = ETHTOOL_LINK_MODE_100baseT_Full_BIT,
1718                 .speed          = SPEED_100,
1719         },
1720         {
1721                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1722                                   MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1723                 .mask_ethtool   = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
1724                 .speed          = SPEED_1000,
1725         },
1726         {
1727                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1728                 .mask_ethtool   = ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
1729                 .speed          = SPEED_10000,
1730         },
1731         {
1732                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1733                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1734                 .mask_ethtool   = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
1735                 .speed          = SPEED_10000,
1736         },
1737         {
1738                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1739                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1740                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1741                                   MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1742                 .mask_ethtool   = ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
1743                 .speed          = SPEED_10000,
1744         },
1745         {
1746                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1747                 .mask_ethtool   = ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
1748                 .speed          = SPEED_20000,
1749         },
1750         {
1751                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1752                 .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
1753                 .speed          = SPEED_40000,
1754         },
1755         {
1756                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1757                 .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
1758                 .speed          = SPEED_40000,
1759         },
1760         {
1761                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1762                 .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
1763                 .speed          = SPEED_40000,
1764         },
1765         {
1766                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1767                 .mask_ethtool   = ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
1768                 .speed          = SPEED_40000,
1769         },
1770         {
1771                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR,
1772                 .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
1773                 .speed          = SPEED_25000,
1774         },
1775         {
1776                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR,
1777                 .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
1778                 .speed          = SPEED_25000,
1779         },
1780         {
1781                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1782                 .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
1783                 .speed          = SPEED_25000,
1784         },
1785         {
1786                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1787                 .mask_ethtool   = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
1788                 .speed          = SPEED_25000,
1789         },
1790         {
1791                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2,
1792                 .mask_ethtool   = ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT,
1793                 .speed          = SPEED_50000,
1794         },
1795         {
1796                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1797                 .mask_ethtool   = ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT,
1798                 .speed          = SPEED_50000,
1799         },
1800         {
1801                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_SR2,
1802                 .mask_ethtool   = ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT,
1803                 .speed          = SPEED_50000,
1804         },
1805         {
1806                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1807                 .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT,
1808                 .speed          = SPEED_56000,
1809         },
1810         {
1811                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1812                 .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT,
1813                 .speed          = SPEED_56000,
1814         },
1815         {
1816                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1817                 .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT,
1818                 .speed          = SPEED_56000,
1819         },
1820         {
1821                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1822                 .mask_ethtool   = ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT,
1823                 .speed          = SPEED_56000,
1824         },
1825         {
1826                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4,
1827                 .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
1828                 .speed          = SPEED_100000,
1829         },
1830         {
1831                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4,
1832                 .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
1833                 .speed          = SPEED_100000,
1834         },
1835         {
1836                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4,
1837                 .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
1838                 .speed          = SPEED_100000,
1839         },
1840         {
1841                 .mask           = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1842                 .mask_ethtool   = ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT,
1843                 .speed          = SPEED_100000,
1844         },
1845 };
1846
1847 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1848
1849 static void
1850 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto,
1851                                   struct ethtool_link_ksettings *cmd)
1852 {
1853         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1854                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1855                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1856                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1857                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1858                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1859                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
1860
1861         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1862                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1863                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1864                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1865                               MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1866                 ethtool_link_ksettings_add_link_mode(cmd, supported, Backplane);
1867 }
1868
1869 static void mlxsw_sp_from_ptys_link(u32 ptys_eth_proto, unsigned long *mode)
1870 {
1871         int i;
1872
1873         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1874                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1875                         __set_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
1876                                   mode);
1877         }
1878 }
1879
1880 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1881                                             struct ethtool_link_ksettings *cmd)
1882 {
1883         u32 speed = SPEED_UNKNOWN;
1884         u8 duplex = DUPLEX_UNKNOWN;
1885         int i;
1886
1887         if (!carrier_ok)
1888                 goto out;
1889
1890         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1891                 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1892                         speed = mlxsw_sp_port_link_mode[i].speed;
1893                         duplex = DUPLEX_FULL;
1894                         break;
1895                 }
1896         }
1897 out:
1898         cmd->base.speed = speed;
1899         cmd->base.duplex = duplex;
1900 }
1901
1902 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1903 {
1904         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1905                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1906                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1907                               MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1908                 return PORT_FIBRE;
1909
1910         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1911                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1912                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1913                 return PORT_DA;
1914
1915         if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1916                               MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1917                               MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1918                               MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1919                 return PORT_NONE;
1920
1921         return PORT_OTHER;
1922 }
1923
1924 static u32
1925 mlxsw_sp_to_ptys_advert_link(const struct ethtool_link_ksettings *cmd)
1926 {
1927         u32 ptys_proto = 0;
1928         int i;
1929
1930         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1931                 if (test_bit(mlxsw_sp_port_link_mode[i].mask_ethtool,
1932                              cmd->link_modes.advertising))
1933                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1934         }
1935         return ptys_proto;
1936 }
1937
1938 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1939 {
1940         u32 ptys_proto = 0;
1941         int i;
1942
1943         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1944                 if (speed == mlxsw_sp_port_link_mode[i].speed)
1945                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1946         }
1947         return ptys_proto;
1948 }
1949
1950 static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
1951 {
1952         u32 ptys_proto = 0;
1953         int i;
1954
1955         for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1956                 if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
1957                         ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1958         }
1959         return ptys_proto;
1960 }
1961
1962 static void mlxsw_sp_port_get_link_supported(u32 eth_proto_cap,
1963                                              struct ethtool_link_ksettings *cmd)
1964 {
1965         ethtool_link_ksettings_add_link_mode(cmd, supported, Asym_Pause);
1966         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
1967         ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
1968
1969         mlxsw_sp_from_ptys_supported_port(eth_proto_cap, cmd);
1970         mlxsw_sp_from_ptys_link(eth_proto_cap, cmd->link_modes.supported);
1971 }
1972
1973 static void mlxsw_sp_port_get_link_advertise(u32 eth_proto_admin, bool autoneg,
1974                                              struct ethtool_link_ksettings *cmd)
1975 {
1976         if (!autoneg)
1977                 return;
1978
1979         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
1980         mlxsw_sp_from_ptys_link(eth_proto_admin, cmd->link_modes.advertising);
1981 }
1982
1983 static void
1984 mlxsw_sp_port_get_link_lp_advertise(u32 eth_proto_lp, u8 autoneg_status,
1985                                     struct ethtool_link_ksettings *cmd)
1986 {
1987         if (autoneg_status != MLXSW_REG_PTYS_AN_STATUS_OK || !eth_proto_lp)
1988                 return;
1989
1990         ethtool_link_ksettings_add_link_mode(cmd, lp_advertising, Autoneg);
1991         mlxsw_sp_from_ptys_link(eth_proto_lp, cmd->link_modes.lp_advertising);
1992 }
1993
1994 static int mlxsw_sp_port_get_link_ksettings(struct net_device *dev,
1995                                             struct ethtool_link_ksettings *cmd)
1996 {
1997         u32 eth_proto_cap, eth_proto_admin, eth_proto_oper, eth_proto_lp;
1998         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1999         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2000         char ptys_pl[MLXSW_REG_PTYS_LEN];
2001         u8 autoneg_status;
2002         bool autoneg;
2003         int err;
2004
2005         autoneg = mlxsw_sp_port->link.autoneg;
2006         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
2007         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
2008         if (err)
2009                 return err;
2010         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin,
2011                               &eth_proto_oper);
2012
2013         mlxsw_sp_port_get_link_supported(eth_proto_cap, cmd);
2014
2015         mlxsw_sp_port_get_link_advertise(eth_proto_admin, autoneg, cmd);
2016
2017         eth_proto_lp = mlxsw_reg_ptys_eth_proto_lp_advertise_get(ptys_pl);
2018         autoneg_status = mlxsw_reg_ptys_an_status_get(ptys_pl);
2019         mlxsw_sp_port_get_link_lp_advertise(eth_proto_lp, autoneg_status, cmd);
2020
2021         cmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
2022         cmd->base.port = mlxsw_sp_port_connector_port(eth_proto_oper);
2023         mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev), eth_proto_oper,
2024                                         cmd);
2025
2026         return 0;
2027 }
2028
2029 static int
2030 mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
2031                                  const struct ethtool_link_ksettings *cmd)
2032 {
2033         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
2034         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2035         char ptys_pl[MLXSW_REG_PTYS_LEN];
2036         u32 eth_proto_cap, eth_proto_new;
2037         bool autoneg;
2038         int err;
2039
2040         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
2041         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
2042         if (err)
2043                 return err;
2044         mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, NULL, NULL);
2045
2046         autoneg = cmd->base.autoneg == AUTONEG_ENABLE;
2047         if (!autoneg && cmd->base.speed == SPEED_56000) {
2048                 netdev_err(dev, "56G not supported with autoneg off\n");
2049                 return -EINVAL;
2050         }
2051         eth_proto_new = autoneg ?
2052                 mlxsw_sp_to_ptys_advert_link(cmd) :
2053                 mlxsw_sp_to_ptys_speed(cmd->base.speed);
2054
2055         eth_proto_new = eth_proto_new & eth_proto_cap;
2056         if (!eth_proto_new) {
2057                 netdev_err(dev, "No supported speed requested\n");
2058                 return -EINVAL;
2059         }
2060
2061         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
2062         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
2063         if (err)
2064                 return err;
2065
2066         mlxsw_sp_port->link.autoneg = autoneg;
2067
2068         if (!netif_running(dev))
2069                 return 0;
2070
2071         mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
2072         mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
2073
2074         return 0;
2075 }
2076
2077 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
2078         .get_drvinfo            = mlxsw_sp_port_get_drvinfo,
2079         .get_link               = ethtool_op_get_link,
2080         .get_pauseparam         = mlxsw_sp_port_get_pauseparam,
2081         .set_pauseparam         = mlxsw_sp_port_set_pauseparam,
2082         .get_strings            = mlxsw_sp_port_get_strings,
2083         .set_phys_id            = mlxsw_sp_port_set_phys_id,
2084         .get_ethtool_stats      = mlxsw_sp_port_get_stats,
2085         .get_sset_count         = mlxsw_sp_port_get_sset_count,
2086         .get_link_ksettings     = mlxsw_sp_port_get_link_ksettings,
2087         .set_link_ksettings     = mlxsw_sp_port_set_link_ksettings,
2088 };
2089
2090 static int
2091 mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
2092 {
2093         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2094         u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
2095         char ptys_pl[MLXSW_REG_PTYS_LEN];
2096         u32 eth_proto_admin;
2097
2098         eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
2099         mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port,
2100                             eth_proto_admin);
2101         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
2102 }
2103
2104 int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
2105                           enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
2106                           bool dwrr, u8 dwrr_weight)
2107 {
2108         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2109         char qeec_pl[MLXSW_REG_QEEC_LEN];
2110
2111         mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
2112                             next_index);
2113         mlxsw_reg_qeec_de_set(qeec_pl, true);
2114         mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
2115         mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
2116         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
2117 }
2118
2119 int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
2120                                   enum mlxsw_reg_qeec_hr hr, u8 index,
2121                                   u8 next_index, u32 maxrate)
2122 {
2123         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2124         char qeec_pl[MLXSW_REG_QEEC_LEN];
2125
2126         mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
2127                             next_index);
2128         mlxsw_reg_qeec_mase_set(qeec_pl, true);
2129         mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
2130         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
2131 }
2132
2133 int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
2134                               u8 switch_prio, u8 tclass)
2135 {
2136         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2137         char qtct_pl[MLXSW_REG_QTCT_LEN];
2138
2139         mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
2140                             tclass);
2141         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
2142 }
2143
2144 static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
2145 {
2146         int err, i;
2147
2148         /* Setup the elements hierarcy, so that each TC is linked to
2149          * one subgroup, which are all member in the same group.
2150          */
2151         err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2152                                     MLXSW_REG_QEEC_HIERARCY_GROUP, 0, 0, false,
2153                                     0);
2154         if (err)
2155                 return err;
2156         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2157                 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2158                                             MLXSW_REG_QEEC_HIERARCY_SUBGROUP, i,
2159                                             0, false, 0);
2160                 if (err)
2161                         return err;
2162         }
2163         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2164                 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2165                                             MLXSW_REG_QEEC_HIERARCY_TC, i, i,
2166                                             false, 0);
2167                 if (err)
2168                         return err;
2169         }
2170
2171         /* Make sure the max shaper is disabled in all hierarcies that
2172          * support it.
2173          */
2174         err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2175                                             MLXSW_REG_QEEC_HIERARCY_PORT, 0, 0,
2176                                             MLXSW_REG_QEEC_MAS_DIS);
2177         if (err)
2178                 return err;
2179         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2180                 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2181                                                     MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
2182                                                     i, 0,
2183                                                     MLXSW_REG_QEEC_MAS_DIS);
2184                 if (err)
2185                         return err;
2186         }
2187         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2188                 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2189                                                     MLXSW_REG_QEEC_HIERARCY_TC,
2190                                                     i, i,
2191                                                     MLXSW_REG_QEEC_MAS_DIS);
2192                 if (err)
2193                         return err;
2194
2195                 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2196                                                     MLXSW_REG_QEEC_HIERARCY_TC,
2197                                                     i + 8, i,
2198                                                     MLXSW_REG_QEEC_MAS_DIS);
2199                 if (err)
2200                         return err;
2201         }
2202
2203         /* Map all priorities to traffic class 0. */
2204         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2205                 err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
2206                 if (err)
2207                         return err;
2208         }
2209
2210         return 0;
2211 }
2212
2213 static int mlxsw_sp_port_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
2214 {
2215         mlxsw_sp_port->pvid = 1;
2216
2217         return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
2218 }
2219
2220 static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
2221 {
2222         return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
2223 }
2224
2225 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
2226                                 bool split, u8 module, u8 width, u8 lane)
2227 {
2228         struct mlxsw_sp_port *mlxsw_sp_port;
2229         struct net_device *dev;
2230         size_t bytes;
2231         int err;
2232
2233         dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
2234         if (!dev)
2235                 return -ENOMEM;
2236         mlxsw_sp_port = netdev_priv(dev);
2237         mlxsw_sp_port->dev = dev;
2238         mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
2239         mlxsw_sp_port->local_port = local_port;
2240         mlxsw_sp_port->split = split;
2241         mlxsw_sp_port->mapping.module = module;
2242         mlxsw_sp_port->mapping.width = width;
2243         mlxsw_sp_port->mapping.lane = lane;
2244         mlxsw_sp_port->link.autoneg = 1;
2245         bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
2246         mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
2247         if (!mlxsw_sp_port->active_vlans) {
2248                 err = -ENOMEM;
2249                 goto err_port_active_vlans_alloc;
2250         }
2251         mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
2252         if (!mlxsw_sp_port->untagged_vlans) {
2253                 err = -ENOMEM;
2254                 goto err_port_untagged_vlans_alloc;
2255         }
2256         INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
2257         INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);
2258
2259         mlxsw_sp_port->pcpu_stats =
2260                 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
2261         if (!mlxsw_sp_port->pcpu_stats) {
2262                 err = -ENOMEM;
2263                 goto err_alloc_stats;
2264         }
2265
2266         mlxsw_sp_port->hw_stats.cache =
2267                 kzalloc(sizeof(*mlxsw_sp_port->hw_stats.cache), GFP_KERNEL);
2268
2269         if (!mlxsw_sp_port->hw_stats.cache) {
2270                 err = -ENOMEM;
2271                 goto err_alloc_hw_stats;
2272         }
2273         INIT_DELAYED_WORK(&mlxsw_sp_port->hw_stats.update_dw,
2274                           &update_stats_cache);
2275
2276         dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
2277         dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
2278
2279         err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
2280         if (err) {
2281                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
2282                         mlxsw_sp_port->local_port);
2283                 goto err_port_swid_set;
2284         }
2285
2286         err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
2287         if (err) {
2288                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
2289                         mlxsw_sp_port->local_port);
2290                 goto err_dev_addr_init;
2291         }
2292
2293         netif_carrier_off(dev);
2294
2295         dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
2296                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
2297         dev->hw_features |= NETIF_F_HW_TC;
2298
2299         /* Each packet needs to have a Tx header (metadata) on top all other
2300          * headers.
2301          */
2302         dev->needed_headroom = MLXSW_TXHDR_LEN;
2303
2304         err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
2305         if (err) {
2306                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
2307                         mlxsw_sp_port->local_port);
2308                 goto err_port_system_port_mapping_set;
2309         }
2310
2311         err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
2312         if (err) {
2313                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
2314                         mlxsw_sp_port->local_port);
2315                 goto err_port_speed_by_width_set;
2316         }
2317
2318         err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
2319         if (err) {
2320                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
2321                         mlxsw_sp_port->local_port);
2322                 goto err_port_mtu_set;
2323         }
2324
2325         err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
2326         if (err)
2327                 goto err_port_admin_status_set;
2328
2329         err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
2330         if (err) {
2331                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
2332                         mlxsw_sp_port->local_port);
2333                 goto err_port_buffers_init;
2334         }
2335
2336         err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
2337         if (err) {
2338                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize ETS\n",
2339                         mlxsw_sp_port->local_port);
2340                 goto err_port_ets_init;
2341         }
2342
2343         /* ETS and buffers must be initialized before DCB. */
2344         err = mlxsw_sp_port_dcb_init(mlxsw_sp_port);
2345         if (err) {
2346                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize DCB\n",
2347                         mlxsw_sp_port->local_port);
2348                 goto err_port_dcb_init;
2349         }
2350
2351         err = mlxsw_sp_port_pvid_vport_create(mlxsw_sp_port);
2352         if (err) {
2353                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
2354                         mlxsw_sp_port->local_port);
2355                 goto err_port_pvid_vport_create;
2356         }
2357
2358         mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
2359         mlxsw_sp->ports[local_port] = mlxsw_sp_port;
2360         err = register_netdev(dev);
2361         if (err) {
2362                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
2363                         mlxsw_sp_port->local_port);
2364                 goto err_register_netdev;
2365         }
2366
2367         err = mlxsw_core_port_init(mlxsw_sp->core, &mlxsw_sp_port->core_port,
2368                                    mlxsw_sp_port->local_port, dev,
2369                                    mlxsw_sp_port->split, module);
2370         if (err) {
2371                 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
2372                         mlxsw_sp_port->local_port);
2373                 goto err_core_port_init;
2374         }
2375
2376         mlxsw_core_schedule_dw(&mlxsw_sp_port->hw_stats.update_dw, 0);
2377         return 0;
2378
2379 err_core_port_init:
2380         unregister_netdev(dev);
2381 err_register_netdev:
2382         mlxsw_sp->ports[local_port] = NULL;
2383         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2384         mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2385 err_port_pvid_vport_create:
2386         mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2387 err_port_dcb_init:
2388 err_port_ets_init:
2389 err_port_buffers_init:
2390 err_port_admin_status_set:
2391 err_port_mtu_set:
2392 err_port_speed_by_width_set:
2393 err_port_system_port_mapping_set:
2394 err_dev_addr_init:
2395         mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2396 err_port_swid_set:
2397         kfree(mlxsw_sp_port->hw_stats.cache);
2398 err_alloc_hw_stats:
2399         free_percpu(mlxsw_sp_port->pcpu_stats);
2400 err_alloc_stats:
2401         kfree(mlxsw_sp_port->untagged_vlans);
2402 err_port_untagged_vlans_alloc:
2403         kfree(mlxsw_sp_port->active_vlans);
2404 err_port_active_vlans_alloc:
2405         free_netdev(dev);
2406         return err;
2407 }
2408
2409 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
2410 {
2411         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
2412
2413         if (!mlxsw_sp_port)
2414                 return;
2415         cancel_delayed_work_sync(&mlxsw_sp_port->hw_stats.update_dw);
2416         mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
2417         unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
2418         mlxsw_sp->ports[local_port] = NULL;
2419         mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2420         mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2421         mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2422         mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2423         mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
2424         free_percpu(mlxsw_sp_port->pcpu_stats);
2425         kfree(mlxsw_sp_port->hw_stats.cache);
2426         kfree(mlxsw_sp_port->untagged_vlans);
2427         kfree(mlxsw_sp_port->active_vlans);
2428         WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
2429         free_netdev(mlxsw_sp_port->dev);
2430 }
2431
2432 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
2433 {
2434         int i;
2435
2436         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
2437                 mlxsw_sp_port_remove(mlxsw_sp, i);
2438         kfree(mlxsw_sp->ports);
2439 }
2440
2441 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
2442 {
2443         u8 module, width, lane;
2444         size_t alloc_size;
2445         int i;
2446         int err;
2447
2448         alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
2449         mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
2450         if (!mlxsw_sp->ports)
2451                 return -ENOMEM;
2452
2453         for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
2454                 err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
2455                                                     &width, &lane);
2456                 if (err)
2457                         goto err_port_module_info_get;
2458                 if (!width)
2459                         continue;
2460                 mlxsw_sp->port_to_module[i] = module;
2461                 err = mlxsw_sp_port_create(mlxsw_sp, i, false, module, width,
2462                                            lane);
2463                 if (err)
2464                         goto err_port_create;
2465         }
2466         return 0;
2467
2468 err_port_create:
2469 err_port_module_info_get:
2470         for (i--; i >= 1; i--)
2471                 mlxsw_sp_port_remove(mlxsw_sp, i);
2472         kfree(mlxsw_sp->ports);
2473         return err;
2474 }
2475
2476 static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
2477 {
2478         u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;
2479
2480         return local_port - offset;
2481 }
2482
2483 static int mlxsw_sp_port_split_create(struct mlxsw_sp *mlxsw_sp, u8 base_port,
2484                                       u8 module, unsigned int count)
2485 {
2486         u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
2487         int err, i;
2488
2489         for (i = 0; i < count; i++) {
2490                 err = mlxsw_sp_port_module_map(mlxsw_sp, base_port + i, module,
2491                                                width, i * width);
2492                 if (err)
2493                         goto err_port_module_map;
2494         }
2495
2496         for (i = 0; i < count; i++) {
2497                 err = __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i, 0);
2498                 if (err)
2499                         goto err_port_swid_set;
2500         }
2501
2502         for (i = 0; i < count; i++) {
2503                 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
2504                                            module, width, i * width);
2505                 if (err)
2506                         goto err_port_create;
2507         }
2508
2509         return 0;
2510
2511 err_port_create:
2512         for (i--; i >= 0; i--)
2513                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2514         i = count;
2515 err_port_swid_set:
2516         for (i--; i >= 0; i--)
2517                 __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i,
2518                                          MLXSW_PORT_SWID_DISABLED_PORT);
2519         i = count;
2520 err_port_module_map:
2521         for (i--; i >= 0; i--)
2522                 mlxsw_sp_port_module_unmap(mlxsw_sp, base_port + i);
2523         return err;
2524 }
2525
2526 static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
2527                                          u8 base_port, unsigned int count)
2528 {
2529         u8 local_port, module, width = MLXSW_PORT_MODULE_MAX_WIDTH;
2530         int i;
2531
2532         /* Split by four means we need to re-create two ports, otherwise
2533          * only one.
2534          */
2535         count = count / 2;
2536
2537         for (i = 0; i < count; i++) {
2538                 local_port = base_port + i * 2;
2539                 module = mlxsw_sp->port_to_module[local_port];
2540
2541                 mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
2542                                          0);
2543         }
2544
2545         for (i = 0; i < count; i++)
2546                 __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i * 2, 0);
2547
2548         for (i = 0; i < count; i++) {
2549                 local_port = base_port + i * 2;
2550                 module = mlxsw_sp->port_to_module[local_port];
2551
2552                 mlxsw_sp_port_create(mlxsw_sp, local_port, false, module,
2553                                      width, 0);
2554         }
2555 }
2556
2557 static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
2558                                unsigned int count)
2559 {
2560         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2561         struct mlxsw_sp_port *mlxsw_sp_port;
2562         u8 module, cur_width, base_port;
2563         int i;
2564         int err;
2565
2566         mlxsw_sp_port = mlxsw_sp->ports[local_port];
2567         if (!mlxsw_sp_port) {
2568                 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
2569                         local_port);
2570                 return -EINVAL;
2571         }
2572
2573         module = mlxsw_sp_port->mapping.module;
2574         cur_width = mlxsw_sp_port->mapping.width;
2575
2576         if (count != 2 && count != 4) {
2577                 netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
2578                 return -EINVAL;
2579         }
2580
2581         if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
2582                 netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
2583                 return -EINVAL;
2584         }
2585
2586         /* Make sure we have enough slave (even) ports for the split. */
2587         if (count == 2) {
2588                 base_port = local_port;
2589                 if (mlxsw_sp->ports[base_port + 1]) {
2590                         netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
2591                         return -EINVAL;
2592                 }
2593         } else {
2594                 base_port = mlxsw_sp_cluster_base_port_get(local_port);
2595                 if (mlxsw_sp->ports[base_port + 1] ||
2596                     mlxsw_sp->ports[base_port + 3]) {
2597                         netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
2598                         return -EINVAL;
2599                 }
2600         }
2601
2602         for (i = 0; i < count; i++)
2603                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2604
2605         err = mlxsw_sp_port_split_create(mlxsw_sp, base_port, module, count);
2606         if (err) {
2607                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create split ports\n");
2608                 goto err_port_split_create;
2609         }
2610
2611         return 0;
2612
2613 err_port_split_create:
2614         mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2615         return err;
2616 }
2617
2618 static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
2619 {
2620         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2621         struct mlxsw_sp_port *mlxsw_sp_port;
2622         u8 cur_width, base_port;
2623         unsigned int count;
2624         int i;
2625
2626         mlxsw_sp_port = mlxsw_sp->ports[local_port];
2627         if (!mlxsw_sp_port) {
2628                 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
2629                         local_port);
2630                 return -EINVAL;
2631         }
2632
2633         if (!mlxsw_sp_port->split) {
2634                 netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
2635                 return -EINVAL;
2636         }
2637
2638         cur_width = mlxsw_sp_port->mapping.width;
2639         count = cur_width == 1 ? 4 : 2;
2640
2641         base_port = mlxsw_sp_cluster_base_port_get(local_port);
2642
2643         /* Determine which ports to remove. */
2644         if (count == 2 && local_port >= base_port + 2)
2645                 base_port = base_port + 2;
2646
2647         for (i = 0; i < count; i++)
2648                 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2649
2650         mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2651
2652         return 0;
2653 }
2654
2655 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
2656                                      char *pude_pl, void *priv)
2657 {
2658         struct mlxsw_sp *mlxsw_sp = priv;
2659         struct mlxsw_sp_port *mlxsw_sp_port;
2660         enum mlxsw_reg_pude_oper_status status;
2661         u8 local_port;
2662
2663         local_port = mlxsw_reg_pude_local_port_get(pude_pl);
2664         mlxsw_sp_port = mlxsw_sp->ports[local_port];
2665         if (!mlxsw_sp_port)
2666                 return;
2667
2668         status = mlxsw_reg_pude_oper_status_get(pude_pl);
2669         if (status == MLXSW_PORT_OPER_STATUS_UP) {
2670                 netdev_info(mlxsw_sp_port->dev, "link up\n");
2671                 netif_carrier_on(mlxsw_sp_port->dev);
2672         } else {
2673                 netdev_info(mlxsw_sp_port->dev, "link down\n");
2674                 netif_carrier_off(mlxsw_sp_port->dev);
2675         }
2676 }
2677
2678 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
2679         .func = mlxsw_sp_pude_event_func,
2680         .trap_id = MLXSW_TRAP_ID_PUDE,
2681 };
2682
2683 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
2684                                    enum mlxsw_event_trap_id trap_id)
2685 {
2686         struct mlxsw_event_listener *el;
2687         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2688         int err;
2689
2690         switch (trap_id) {
2691         case MLXSW_TRAP_ID_PUDE:
2692                 el = &mlxsw_sp_pude_event;
2693                 break;
2694         }
2695         err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
2696         if (err)
2697                 return err;
2698
2699         mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
2700         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2701         if (err)
2702                 goto err_event_trap_set;
2703
2704         return 0;
2705
2706 err_event_trap_set:
2707         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
2708         return err;
2709 }
2710
2711 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
2712                                       enum mlxsw_event_trap_id trap_id)
2713 {
2714         struct mlxsw_event_listener *el;
2715
2716         switch (trap_id) {
2717         case MLXSW_TRAP_ID_PUDE:
2718                 el = &mlxsw_sp_pude_event;
2719                 break;
2720         }
2721         mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
2722 }
2723
2724 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
2725                                       void *priv)
2726 {
2727         struct mlxsw_sp *mlxsw_sp = priv;
2728         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
2729         struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
2730
2731         if (unlikely(!mlxsw_sp_port)) {
2732                 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
2733                                      local_port);
2734                 return;
2735         }
2736
2737         skb->dev = mlxsw_sp_port->dev;
2738
2739         pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
2740         u64_stats_update_begin(&pcpu_stats->syncp);
2741         pcpu_stats->rx_packets++;
2742         pcpu_stats->rx_bytes += skb->len;
2743         u64_stats_update_end(&pcpu_stats->syncp);
2744
2745         skb->protocol = eth_type_trans(skb, skb->dev);
2746         netif_receive_skb(skb);
2747 }
2748
2749 static void mlxsw_sp_rx_listener_mark_func(struct sk_buff *skb, u8 local_port,
2750                                            void *priv)
2751 {
2752         skb->offload_fwd_mark = 1;
2753         return mlxsw_sp_rx_listener_func(skb, local_port, priv);
2754 }
2755
2756 #define MLXSW_SP_RXL(_func, _trap_id, _action)                  \
2757         {                                                       \
2758                 .func = _func,                                  \
2759                 .local_port = MLXSW_PORT_DONT_CARE,             \
2760                 .trap_id = MLXSW_TRAP_ID_##_trap_id,            \
2761                 .action = MLXSW_REG_HPKT_ACTION_##_action,      \
2762         }
2763
2764 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
2765         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, FDB_MC, TRAP_TO_CPU),
2766         /* Traps for specific L2 packet types, not trapped as FDB MC */
2767         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, STP, TRAP_TO_CPU),
2768         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LACP, TRAP_TO_CPU),
2769         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, EAPOL, TRAP_TO_CPU),
2770         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LLDP, TRAP_TO_CPU),
2771         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MMRP, TRAP_TO_CPU),
2772         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MVRP, TRAP_TO_CPU),
2773         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, RPVST, TRAP_TO_CPU),
2774         MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, DHCP, MIRROR_TO_CPU),
2775         MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, IGMP_QUERY, MIRROR_TO_CPU),
2776         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V1_REPORT, TRAP_TO_CPU),
2777         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V2_REPORT, TRAP_TO_CPU),
2778         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V2_LEAVE, TRAP_TO_CPU),
2779         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IGMP_V3_REPORT, TRAP_TO_CPU),
2780         MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, ARPBC, MIRROR_TO_CPU),
2781         MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, ARPUC, MIRROR_TO_CPU),
2782         /* L3 traps */
2783         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, MTUERROR, TRAP_TO_CPU),
2784         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, TTLERROR, TRAP_TO_CPU),
2785         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, LBERROR, TRAP_TO_CPU),
2786         MLXSW_SP_RXL(mlxsw_sp_rx_listener_mark_func, OSPF, TRAP_TO_CPU),
2787         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, IP2ME, TRAP_TO_CPU),
2788         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, RTR_INGRESS0, TRAP_TO_CPU),
2789         MLXSW_SP_RXL(mlxsw_sp_rx_listener_func, HOST_MISS_IPV4, TRAP_TO_CPU),
2790 };
2791
2792 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
2793 {
2794         char htgt_pl[MLXSW_REG_HTGT_LEN];
2795         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2796         int i;
2797         int err;
2798
2799         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
2800         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
2801         if (err)
2802                 return err;
2803
2804         mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
2805         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
2806         if (err)
2807                 return err;
2808
2809         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2810                 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
2811                                                       &mlxsw_sp_rx_listener[i],
2812                                                       mlxsw_sp);
2813                 if (err)
2814                         goto err_rx_listener_register;
2815
2816                 mlxsw_reg_hpkt_pack(hpkt_pl, mlxsw_sp_rx_listener[i].action,
2817                                     mlxsw_sp_rx_listener[i].trap_id);
2818                 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2819                 if (err)
2820                         goto err_rx_trap_set;
2821         }
2822         return 0;
2823
2824 err_rx_trap_set:
2825         mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2826                                           &mlxsw_sp_rx_listener[i],
2827                                           mlxsw_sp);
2828 err_rx_listener_register:
2829         for (i--; i >= 0; i--) {
2830                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2831                                     mlxsw_sp_rx_listener[i].trap_id);
2832                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2833
2834                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2835                                                   &mlxsw_sp_rx_listener[i],
2836                                                   mlxsw_sp);
2837         }
2838         return err;
2839 }
2840
2841 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
2842 {
2843         char hpkt_pl[MLXSW_REG_HPKT_LEN];
2844         int i;
2845
2846         for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2847                 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2848                                     mlxsw_sp_rx_listener[i].trap_id);
2849                 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2850
2851                 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2852                                                   &mlxsw_sp_rx_listener[i],
2853                                                   mlxsw_sp);
2854         }
2855 }
2856
2857 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
2858                                  enum mlxsw_reg_sfgc_type type,
2859                                  enum mlxsw_reg_sfgc_bridge_type bridge_type)
2860 {
2861         enum mlxsw_flood_table_type table_type;
2862         enum mlxsw_sp_flood_table flood_table;
2863         char sfgc_pl[MLXSW_REG_SFGC_LEN];
2864
2865         if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2866                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2867         else
2868                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2869
2870         if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
2871                 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
2872         else
2873                 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2874
2875         mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
2876                             flood_table);
2877         return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
2878 }
2879
2880 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
2881 {
2882         int type, err;
2883
2884         for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
2885                 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
2886                         continue;
2887
2888                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2889                                             MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
2890                 if (err)
2891                         return err;
2892
2893                 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2894                                             MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
2895                 if (err)
2896                         return err;
2897         }
2898
2899         return 0;
2900 }
2901
2902 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
2903 {
2904         struct mlxsw_resources *resources;
2905         char slcr_pl[MLXSW_REG_SLCR_LEN];
2906         int err;
2907
2908         mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
2909                                      MLXSW_REG_SLCR_LAG_HASH_DMAC |
2910                                      MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
2911                                      MLXSW_REG_SLCR_LAG_HASH_VLANID |
2912                                      MLXSW_REG_SLCR_LAG_HASH_SIP |
2913                                      MLXSW_REG_SLCR_LAG_HASH_DIP |
2914                                      MLXSW_REG_SLCR_LAG_HASH_SPORT |
2915                                      MLXSW_REG_SLCR_LAG_HASH_DPORT |
2916                                      MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
2917         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
2918         if (err)
2919                 return err;
2920
2921         resources = mlxsw_core_resources_get(mlxsw_sp->core);
2922         if (!(resources->max_lag_valid && resources->max_ports_in_lag_valid))
2923                 return -EIO;
2924
2925         mlxsw_sp->lags = kcalloc(resources->max_lag,
2926                                  sizeof(struct mlxsw_sp_upper),
2927                                  GFP_KERNEL);
2928         if (!mlxsw_sp->lags)
2929                 return -ENOMEM;
2930
2931         return 0;
2932 }
2933
2934 static void mlxsw_sp_lag_fini(struct mlxsw_sp *mlxsw_sp)
2935 {
2936         kfree(mlxsw_sp->lags);
2937 }
2938
2939 static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
2940                          const struct mlxsw_bus_info *mlxsw_bus_info)
2941 {
2942         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2943         int err;
2944
2945         mlxsw_sp->core = mlxsw_core;
2946         mlxsw_sp->bus_info = mlxsw_bus_info;
2947         INIT_LIST_HEAD(&mlxsw_sp->fids);
2948         INIT_LIST_HEAD(&mlxsw_sp->vfids.list);
2949         INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2950
2951         err = mlxsw_sp_base_mac_get(mlxsw_sp);
2952         if (err) {
2953                 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
2954                 return err;
2955         }
2956
2957         err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2958         if (err) {
2959                 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
2960                 return err;
2961         }
2962
2963         err = mlxsw_sp_traps_init(mlxsw_sp);
2964         if (err) {
2965                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
2966                 goto err_rx_listener_register;
2967         }
2968
2969         err = mlxsw_sp_flood_init(mlxsw_sp);
2970         if (err) {
2971                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
2972                 goto err_flood_init;
2973         }
2974
2975         err = mlxsw_sp_buffers_init(mlxsw_sp);
2976         if (err) {
2977                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
2978                 goto err_buffers_init;
2979         }
2980
2981         err = mlxsw_sp_lag_init(mlxsw_sp);
2982         if (err) {
2983                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
2984                 goto err_lag_init;
2985         }
2986
2987         err = mlxsw_sp_switchdev_init(mlxsw_sp);
2988         if (err) {
2989                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
2990                 goto err_switchdev_init;
2991         }
2992
2993         err = mlxsw_sp_router_init(mlxsw_sp);
2994         if (err) {
2995                 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize router\n");
2996                 goto err_router_init;
2997         }
2998
2999         err = mlxsw_sp_span_init(mlxsw_sp);
3000         if (err) {
3001                 dev_err(mlxsw_sp->bus_info->dev, "Failed to init span system\n");
3002                 goto err_span_init;
3003         }
3004
3005         err = mlxsw_sp_ports_create(mlxsw_sp);
3006         if (err) {
3007                 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
3008                 goto err_ports_create;
3009         }
3010
3011         return 0;
3012
3013 err_ports_create:
3014         mlxsw_sp_span_fini(mlxsw_sp);
3015 err_span_init:
3016         mlxsw_sp_router_fini(mlxsw_sp);
3017 err_router_init:
3018         mlxsw_sp_switchdev_fini(mlxsw_sp);
3019 err_switchdev_init:
3020         mlxsw_sp_lag_fini(mlxsw_sp);
3021 err_lag_init:
3022         mlxsw_sp_buffers_fini(mlxsw_sp);
3023 err_buffers_init:
3024 err_flood_init:
3025         mlxsw_sp_traps_fini(mlxsw_sp);
3026 err_rx_listener_register:
3027         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
3028         return err;
3029 }
3030
3031 static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
3032 {
3033         struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
3034
3035         mlxsw_sp_ports_remove(mlxsw_sp);
3036         mlxsw_sp_span_fini(mlxsw_sp);
3037         mlxsw_sp_router_fini(mlxsw_sp);
3038         mlxsw_sp_switchdev_fini(mlxsw_sp);
3039         mlxsw_sp_lag_fini(mlxsw_sp);
3040         mlxsw_sp_buffers_fini(mlxsw_sp);
3041         mlxsw_sp_traps_fini(mlxsw_sp);
3042         mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
3043         WARN_ON(!list_empty(&mlxsw_sp->vfids.list));
3044         WARN_ON(!list_empty(&mlxsw_sp->fids));
3045 }
3046
3047 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
3048         .used_max_vepa_channels         = 1,
3049         .max_vepa_channels              = 0,
3050         .used_max_mid                   = 1,
3051         .max_mid                        = MLXSW_SP_MID_MAX,
3052         .used_max_pgt                   = 1,
3053         .max_pgt                        = 0,
3054         .used_flood_tables              = 1,
3055         .used_flood_mode                = 1,
3056         .flood_mode                     = 3,
3057         .max_fid_offset_flood_tables    = 2,
3058         .fid_offset_flood_table_size    = VLAN_N_VID - 1,
3059         .max_fid_flood_tables           = 2,
3060         .fid_flood_table_size           = MLXSW_SP_VFID_MAX,
3061         .used_max_ib_mc                 = 1,
3062         .max_ib_mc                      = 0,
3063         .used_max_pkey                  = 1,
3064         .max_pkey                       = 0,
3065         .used_kvd_split_data            = 1,
3066         .kvd_hash_granularity           = MLXSW_SP_KVD_GRANULARITY,
3067         .kvd_hash_single_parts          = 2,
3068         .kvd_hash_double_parts          = 1,
3069         .kvd_linear_size                = MLXSW_SP_KVD_LINEAR_SIZE,
3070         .swid_config                    = {
3071                 {
3072                         .used_type      = 1,
3073                         .type           = MLXSW_PORT_SWID_TYPE_ETH,
3074                 }
3075         },
3076         .resource_query_enable          = 1,
3077 };
3078
3079 static struct mlxsw_driver mlxsw_sp_driver = {
3080         .kind                           = MLXSW_DEVICE_KIND_SPECTRUM,
3081         .owner                          = THIS_MODULE,
3082         .priv_size                      = sizeof(struct mlxsw_sp),
3083         .init                           = mlxsw_sp_init,
3084         .fini                           = mlxsw_sp_fini,
3085         .port_split                     = mlxsw_sp_port_split,
3086         .port_unsplit                   = mlxsw_sp_port_unsplit,
3087         .sb_pool_get                    = mlxsw_sp_sb_pool_get,
3088         .sb_pool_set                    = mlxsw_sp_sb_pool_set,
3089         .sb_port_pool_get               = mlxsw_sp_sb_port_pool_get,
3090         .sb_port_pool_set               = mlxsw_sp_sb_port_pool_set,
3091         .sb_tc_pool_bind_get            = mlxsw_sp_sb_tc_pool_bind_get,
3092         .sb_tc_pool_bind_set            = mlxsw_sp_sb_tc_pool_bind_set,
3093         .sb_occ_snapshot                = mlxsw_sp_sb_occ_snapshot,
3094         .sb_occ_max_clear               = mlxsw_sp_sb_occ_max_clear,
3095         .sb_occ_port_pool_get           = mlxsw_sp_sb_occ_port_pool_get,
3096         .sb_occ_tc_port_bind_get        = mlxsw_sp_sb_occ_tc_port_bind_get,
3097         .txhdr_construct                = mlxsw_sp_txhdr_construct,
3098         .txhdr_len                      = MLXSW_TXHDR_LEN,
3099         .profile                        = &mlxsw_sp_config_profile,
3100 };
3101
3102 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
3103 {
3104         return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
3105 }
3106
3107 static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev)
3108 {
3109         struct net_device *lower_dev;
3110         struct list_head *iter;
3111
3112         if (mlxsw_sp_port_dev_check(dev))
3113                 return netdev_priv(dev);
3114
3115         netdev_for_each_all_lower_dev(dev, lower_dev, iter) {
3116                 if (mlxsw_sp_port_dev_check(lower_dev))
3117                         return netdev_priv(lower_dev);
3118         }
3119         return NULL;
3120 }
3121
3122 static struct mlxsw_sp *mlxsw_sp_lower_get(struct net_device *dev)
3123 {
3124         struct mlxsw_sp_port *mlxsw_sp_port;
3125
3126         mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
3127         return mlxsw_sp_port ? mlxsw_sp_port->mlxsw_sp : NULL;
3128 }
3129
3130 static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find_rcu(struct net_device *dev)
3131 {
3132         struct net_device *lower_dev;
3133         struct list_head *iter;
3134
3135         if (mlxsw_sp_port_dev_check(dev))
3136                 return netdev_priv(dev);
3137
3138         netdev_for_each_all_lower_dev_rcu(dev, lower_dev, iter) {
3139                 if (mlxsw_sp_port_dev_check(lower_dev))
3140                         return netdev_priv(lower_dev);
3141         }
3142         return NULL;
3143 }
3144
3145 struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev)
3146 {
3147         struct mlxsw_sp_port *mlxsw_sp_port;
3148
3149         rcu_read_lock();
3150         mlxsw_sp_port = mlxsw_sp_port_dev_lower_find_rcu(dev);
3151         if (mlxsw_sp_port)
3152                 dev_hold(mlxsw_sp_port->dev);
3153         rcu_read_unlock();
3154         return mlxsw_sp_port;
3155 }
3156
3157 void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port)
3158 {
3159         dev_put(mlxsw_sp_port->dev);
3160 }
3161
3162 static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r,
3163                                        unsigned long event)
3164 {
3165         switch (event) {
3166         case NETDEV_UP:
3167                 if (!r)
3168                         return true;
3169                 r->ref_count++;
3170                 return false;
3171         case NETDEV_DOWN:
3172                 if (r && --r->ref_count == 0)
3173                         return true;
3174                 /* It is possible we already removed the RIF ourselves
3175                  * if it was assigned to a netdev that is now a bridge
3176                  * or LAG slave.
3177                  */
3178                 return false;
3179         }
3180
3181         return false;
3182 }
3183
3184 static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp)
3185 {
3186         struct mlxsw_resources *resources;
3187         int i;
3188
3189         resources = mlxsw_core_resources_get(mlxsw_sp->core);
3190         for (i = 0; i < resources->max_rif; i++)
3191                 if (!mlxsw_sp->rifs[i])
3192                         return i;
3193
3194         return MLXSW_SP_INVALID_RIF;
3195 }
3196
3197 static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport,
3198                                            bool *p_lagged, u16 *p_system_port)
3199 {
3200         u8 local_port = mlxsw_sp_vport->local_port;
3201
3202         *p_lagged = mlxsw_sp_vport->lagged;
3203         *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port;
3204 }
3205
3206 static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport,
3207                                     struct net_device *l3_dev, u16 rif,
3208                                     bool create)
3209 {
3210         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3211         bool lagged = mlxsw_sp_vport->lagged;
3212         char ritr_pl[MLXSW_REG_RITR_LEN];
3213         u16 system_port;
3214
3215         mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif,
3216                             l3_dev->mtu, l3_dev->dev_addr);
3217
3218         mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port);
3219         mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port,
3220                                   mlxsw_sp_vport_vid_get(mlxsw_sp_vport));
3221
3222         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3223 }
3224
3225 static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
3226
3227 static struct mlxsw_sp_fid *
3228 mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev)
3229 {
3230         struct mlxsw_sp_fid *f;
3231
3232         f = kzalloc(sizeof(*f), GFP_KERNEL);
3233         if (!f)
3234                 return NULL;
3235
3236         f->leave = mlxsw_sp_vport_rif_sp_leave;
3237         f->ref_count = 0;
3238         f->dev = l3_dev;
3239         f->fid = fid;
3240
3241         return f;
3242 }
3243
3244 static struct mlxsw_sp_rif *
3245 mlxsw_sp_rif_alloc(u16 rif, struct net_device *l3_dev, struct mlxsw_sp_fid *f)
3246 {
3247         struct mlxsw_sp_rif *r;
3248
3249         r = kzalloc(sizeof(*r), GFP_KERNEL);
3250         if (!r)
3251                 return NULL;
3252
3253         ether_addr_copy(r->addr, l3_dev->dev_addr);
3254         r->mtu = l3_dev->mtu;
3255         r->ref_count = 1;
3256         r->dev = l3_dev;
3257         r->rif = rif;
3258         r->f = f;
3259
3260         return r;
3261 }
3262
3263 static struct mlxsw_sp_rif *
3264 mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport,
3265                              struct net_device *l3_dev)
3266 {
3267         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3268         struct mlxsw_sp_fid *f;
3269         struct mlxsw_sp_rif *r;
3270         u16 fid, rif;
3271         int err;
3272
3273         rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3274         if (rif == MLXSW_SP_INVALID_RIF)
3275                 return ERR_PTR(-ERANGE);
3276
3277         err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, true);
3278         if (err)
3279                 return ERR_PTR(err);
3280
3281         fid = mlxsw_sp_rif_sp_to_fid(rif);
3282         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true);
3283         if (err)
3284                 goto err_rif_fdb_op;
3285
3286         f = mlxsw_sp_rfid_alloc(fid, l3_dev);
3287         if (!f) {
3288                 err = -ENOMEM;
3289                 goto err_rfid_alloc;
3290         }
3291
3292         r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
3293         if (!r) {
3294                 err = -ENOMEM;
3295                 goto err_rif_alloc;
3296         }
3297
3298         f->r = r;
3299         mlxsw_sp->rifs[rif] = r;
3300
3301         return r;
3302
3303 err_rif_alloc:
3304         kfree(f);
3305 err_rfid_alloc:
3306         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
3307 err_rif_fdb_op:
3308         mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
3309         return ERR_PTR(err);
3310 }
3311
3312 static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport,
3313                                           struct mlxsw_sp_rif *r)
3314 {
3315         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3316         struct net_device *l3_dev = r->dev;
3317         struct mlxsw_sp_fid *f = r->f;
3318         u16 fid = f->fid;
3319         u16 rif = r->rif;
3320
3321         mlxsw_sp->rifs[rif] = NULL;
3322         f->r = NULL;
3323
3324         kfree(r);
3325
3326         kfree(f);
3327
3328         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
3329
3330         mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
3331 }
3332
3333 static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport,
3334                                       struct net_device *l3_dev)
3335 {
3336         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3337         struct mlxsw_sp_rif *r;
3338
3339         r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3340         if (!r) {
3341                 r = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev);
3342                 if (IS_ERR(r))
3343                         return PTR_ERR(r);
3344         }
3345
3346         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, r->f);
3347         r->f->ref_count++;
3348
3349         netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", r->f->fid);
3350
3351         return 0;
3352 }
3353
3354 static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
3355 {
3356         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3357
3358         netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
3359
3360         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
3361         if (--f->ref_count == 0)
3362                 mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->r);
3363 }
3364
3365 static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev,
3366                                          struct net_device *port_dev,
3367                                          unsigned long event, u16 vid)
3368 {
3369         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
3370         struct mlxsw_sp_port *mlxsw_sp_vport;
3371
3372         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
3373         if (WARN_ON(!mlxsw_sp_vport))
3374                 return -EINVAL;
3375
3376         switch (event) {
3377         case NETDEV_UP:
3378                 return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev);
3379         case NETDEV_DOWN:
3380                 mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport);
3381                 break;
3382         }
3383
3384         return 0;
3385 }
3386
3387 static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
3388                                         unsigned long event)
3389 {
3390         if (netif_is_bridge_port(port_dev) || netif_is_lag_port(port_dev))
3391                 return 0;
3392
3393         return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1);
3394 }
3395
3396 static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
3397                                          struct net_device *lag_dev,
3398                                          unsigned long event, u16 vid)
3399 {
3400         struct net_device *port_dev;
3401         struct list_head *iter;
3402         int err;
3403
3404         netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
3405                 if (mlxsw_sp_port_dev_check(port_dev)) {
3406                         err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev,
3407                                                             event, vid);
3408                         if (err)
3409                                 return err;
3410                 }
3411         }
3412
3413         return 0;
3414 }
3415
3416 static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
3417                                        unsigned long event)
3418 {
3419         if (netif_is_bridge_port(lag_dev))
3420                 return 0;
3421
3422         return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1);
3423 }
3424
3425 static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp,
3426                                                     struct net_device *l3_dev)
3427 {
3428         u16 fid;
3429
3430         if (is_vlan_dev(l3_dev))
3431                 fid = vlan_dev_vlan_id(l3_dev);
3432         else if (mlxsw_sp->master_bridge.dev == l3_dev)
3433                 fid = 1;
3434         else
3435                 return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev);
3436
3437         return mlxsw_sp_fid_find(mlxsw_sp, fid);
3438 }
3439
3440 static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid)
3441 {
3442         return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID :
3443                MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
3444 }
3445
3446 static u16 mlxsw_sp_flood_table_index_get(u16 fid)
3447 {
3448         return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid;
3449 }
3450
3451 static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid,
3452                                           bool set)
3453 {
3454         enum mlxsw_flood_table_type table_type;
3455         char *sftr_pl;
3456         u16 index;
3457         int err;
3458
3459         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
3460         if (!sftr_pl)
3461                 return -ENOMEM;
3462
3463         table_type = mlxsw_sp_flood_table_type_get(fid);
3464         index = mlxsw_sp_flood_table_index_get(fid);
3465         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, index, table_type,
3466                             1, MLXSW_PORT_ROUTER_PORT, set);
3467         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
3468
3469         kfree(sftr_pl);
3470         return err;
3471 }
3472
3473 static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid)
3474 {
3475         if (mlxsw_sp_fid_is_vfid(fid))
3476                 return MLXSW_REG_RITR_FID_IF;
3477         else
3478                 return MLXSW_REG_RITR_VLAN_IF;
3479 }
3480
3481 static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp,
3482                                   struct net_device *l3_dev,
3483                                   u16 fid, u16 rif,
3484                                   bool create)
3485 {
3486         enum mlxsw_reg_ritr_if_type rif_type;
3487         char ritr_pl[MLXSW_REG_RITR_LEN];
3488
3489         rif_type = mlxsw_sp_rif_type_get(fid);
3490         mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, l3_dev->mtu,
3491                             l3_dev->dev_addr);
3492         mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid);
3493
3494         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3495 }
3496
3497 static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
3498                                       struct net_device *l3_dev,
3499                                       struct mlxsw_sp_fid *f)
3500 {
3501         struct mlxsw_sp_rif *r;
3502         u16 rif;
3503         int err;
3504
3505         rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3506         if (rif == MLXSW_SP_INVALID_RIF)
3507                 return -ERANGE;
3508
3509         err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
3510         if (err)
3511                 return err;
3512
3513         err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true);
3514         if (err)
3515                 goto err_rif_bridge_op;
3516
3517         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true);
3518         if (err)
3519                 goto err_rif_fdb_op;
3520
3521         r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
3522         if (!r) {
3523                 err = -ENOMEM;
3524                 goto err_rif_alloc;
3525         }
3526
3527         f->r = r;
3528         mlxsw_sp->rifs[rif] = r;
3529
3530         netdev_dbg(l3_dev, "RIF=%d created\n", rif);
3531
3532         return 0;
3533
3534 err_rif_alloc:
3535         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
3536 err_rif_fdb_op:
3537         mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3538 err_rif_bridge_op:
3539         mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3540         return err;
3541 }
3542
3543 void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp,
3544                                  struct mlxsw_sp_rif *r)
3545 {
3546         struct net_device *l3_dev = r->dev;
3547         struct mlxsw_sp_fid *f = r->f;
3548         u16 rif = r->rif;
3549
3550         mlxsw_sp->rifs[rif] = NULL;
3551         f->r = NULL;
3552
3553         kfree(r);
3554
3555         mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
3556
3557         mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3558
3559         mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3560
3561         netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif);
3562 }
3563
3564 static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev,
3565                                           struct net_device *br_dev,
3566                                           unsigned long event)
3567 {
3568         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
3569         struct mlxsw_sp_fid *f;
3570
3571         /* FID can either be an actual FID if the L3 device is the
3572          * VLAN-aware bridge or a VLAN device on top. Otherwise, the
3573          * L3 device is a VLAN-unaware bridge and we get a vFID.
3574          */
3575         f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev);
3576         if (WARN_ON(!f))
3577                 return -EINVAL;
3578
3579         switch (event) {
3580         case NETDEV_UP:
3581                 return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f);
3582         case NETDEV_DOWN:
3583                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
3584                 break;
3585         }
3586
3587         return 0;
3588 }
3589
3590 static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev,
3591                                         unsigned long event)
3592 {
3593         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3594         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev);
3595         u16 vid = vlan_dev_vlan_id(vlan_dev);
3596
3597         if (mlxsw_sp_port_dev_check(real_dev))
3598                 return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event,
3599                                                      vid);
3600         else if (netif_is_lag_master(real_dev))
3601                 return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
3602                                                      vid);
3603         else if (netif_is_bridge_master(real_dev) &&
3604                  mlxsw_sp->master_bridge.dev == real_dev)
3605                 return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev,
3606                                                       event);
3607
3608         return 0;
3609 }
3610
3611 static int mlxsw_sp_inetaddr_event(struct notifier_block *unused,
3612                                    unsigned long event, void *ptr)
3613 {
3614         struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3615         struct net_device *dev = ifa->ifa_dev->dev;
3616         struct mlxsw_sp *mlxsw_sp;
3617         struct mlxsw_sp_rif *r;
3618         int err = 0;
3619
3620         mlxsw_sp = mlxsw_sp_lower_get(dev);
3621         if (!mlxsw_sp)
3622                 goto out;
3623
3624         r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3625         if (!mlxsw_sp_rif_should_config(r, event))
3626                 goto out;
3627
3628         if (mlxsw_sp_port_dev_check(dev))
3629                 err = mlxsw_sp_inetaddr_port_event(dev, event);
3630         else if (netif_is_lag_master(dev))
3631                 err = mlxsw_sp_inetaddr_lag_event(dev, event);
3632         else if (netif_is_bridge_master(dev))
3633                 err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event);
3634         else if (is_vlan_dev(dev))
3635                 err = mlxsw_sp_inetaddr_vlan_event(dev, event);
3636
3637 out:
3638         return notifier_from_errno(err);
3639 }
3640
3641 static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif,
3642                              const char *mac, int mtu)
3643 {
3644         char ritr_pl[MLXSW_REG_RITR_LEN];
3645         int err;
3646
3647         mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
3648         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3649         if (err)
3650                 return err;
3651
3652         mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
3653         mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
3654         mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
3655         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3656 }
3657
3658 static int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
3659 {
3660         struct mlxsw_sp *mlxsw_sp;
3661         struct mlxsw_sp_rif *r;
3662         int err;
3663
3664         mlxsw_sp = mlxsw_sp_lower_get(dev);
3665         if (!mlxsw_sp)
3666                 return 0;
3667
3668         r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3669         if (!r)
3670                 return 0;
3671
3672         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, false);
3673         if (err)
3674                 return err;
3675
3676         err = mlxsw_sp_rif_edit(mlxsw_sp, r->rif, dev->dev_addr, dev->mtu);
3677         if (err)
3678                 goto err_rif_edit;
3679
3680         err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, r->f->fid, true);
3681         if (err)
3682                 goto err_rif_fdb_op;
3683
3684         ether_addr_copy(r->addr, dev->dev_addr);
3685         r->mtu = dev->mtu;
3686
3687         netdev_dbg(dev, "Updated RIF=%d\n", r->rif);
3688
3689         return 0;
3690
3691 err_rif_fdb_op:
3692         mlxsw_sp_rif_edit(mlxsw_sp, r->rif, r->addr, r->mtu);
3693 err_rif_edit:
3694         mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, true);
3695         return err;
3696 }
3697
3698 static bool mlxsw_sp_lag_port_fid_member(struct mlxsw_sp_port *lag_port,
3699                                          u16 fid)
3700 {
3701         if (mlxsw_sp_fid_is_vfid(fid))
3702                 return mlxsw_sp_port_vport_find_by_fid(lag_port, fid);
3703         else
3704                 return test_bit(fid, lag_port->active_vlans);
3705 }
3706
3707 static bool mlxsw_sp_port_fdb_should_flush(struct mlxsw_sp_port *mlxsw_sp_port,
3708                                            u16 fid)
3709 {
3710         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3711         u8 local_port = mlxsw_sp_port->local_port;
3712         u16 lag_id = mlxsw_sp_port->lag_id;
3713         struct mlxsw_resources *resources;
3714         int i, count = 0;
3715
3716         if (!mlxsw_sp_port->lagged)
3717                 return true;
3718
3719         resources = mlxsw_core_resources_get(mlxsw_sp->core);
3720         for (i = 0; i < resources->max_ports_in_lag; i++) {
3721                 struct mlxsw_sp_port *lag_port;
3722
3723                 lag_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
3724                 if (!lag_port || lag_port->local_port == local_port)
3725                         continue;
3726                 if (mlxsw_sp_lag_port_fid_member(lag_port, fid))
3727                         count++;
3728         }
3729
3730         return !count;
3731 }
3732
3733 static int
3734 mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
3735                                     u16 fid)
3736 {
3737         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3738         char sfdf_pl[MLXSW_REG_SFDF_LEN];
3739
3740         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
3741         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
3742         mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
3743                                                 mlxsw_sp_port->local_port);
3744
3745         netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using Port=%d, FID=%d\n",
3746                    mlxsw_sp_port->local_port, fid);
3747
3748         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
3749 }
3750
3751 static int
3752 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
3753                                       u16 fid)
3754 {
3755         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3756         char sfdf_pl[MLXSW_REG_SFDF_LEN];
3757
3758         mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
3759         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
3760         mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
3761
3762         netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using LAG ID=%d, FID=%d\n",
3763                    mlxsw_sp_port->lag_id, fid);
3764
3765         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
3766 }
3767
3768 int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
3769 {
3770         if (!mlxsw_sp_port_fdb_should_flush(mlxsw_sp_port, fid))
3771                 return 0;
3772
3773         if (mlxsw_sp_port->lagged)
3774                 return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port,
3775                                                              fid);
3776         else
3777                 return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, fid);
3778 }
3779
3780 static void mlxsw_sp_master_bridge_gone_sync(struct mlxsw_sp *mlxsw_sp)
3781 {
3782         struct mlxsw_sp_fid *f, *tmp;
3783
3784         list_for_each_entry_safe(f, tmp, &mlxsw_sp->fids, list)
3785                 if (--f->ref_count == 0)
3786                         mlxsw_sp_fid_destroy(mlxsw_sp, f);
3787                 else
3788                         WARN_ON_ONCE(1);
3789 }
3790
3791 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
3792                                          struct net_device *br_dev)
3793 {
3794         return !mlxsw_sp->master_bridge.dev ||
3795                mlxsw_sp->master_bridge.dev == br_dev;
3796 }
3797
3798 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
3799                                        struct net_device *br_dev)
3800 {
3801         mlxsw_sp->master_bridge.dev = br_dev;
3802         mlxsw_sp->master_bridge.ref_count++;
3803 }
3804
3805 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
3806 {
3807         if (--mlxsw_sp->master_bridge.ref_count == 0) {
3808                 mlxsw_sp->master_bridge.dev = NULL;
3809                 /* It's possible upper VLAN devices are still holding
3810                  * references to underlying FIDs. Drop the reference
3811                  * and release the resources if it was the last one.
3812                  * If it wasn't, then something bad happened.
3813                  */
3814                 mlxsw_sp_master_bridge_gone_sync(mlxsw_sp);
3815         }
3816 }
3817
3818 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
3819                                      struct net_device *br_dev)
3820 {
3821         struct net_device *dev = mlxsw_sp_port->dev;
3822         int err;
3823
3824         /* When port is not bridged untagged packets are tagged with
3825          * PVID=VID=1, thereby creating an implicit VLAN interface in
3826          * the device. Remove it and let bridge code take care of its
3827          * own VLANs.
3828          */
3829         err = mlxsw_sp_port_kill_vid(dev, 0, 1);
3830         if (err)
3831                 return err;
3832
3833         mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev);
3834
3835         mlxsw_sp_port->learning = 1;
3836         mlxsw_sp_port->learning_sync = 1;
3837         mlxsw_sp_port->uc_flood = 1;
3838         mlxsw_sp_port->bridged = 1;
3839
3840         return 0;
3841 }
3842
3843 static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3844 {
3845         struct net_device *dev = mlxsw_sp_port->dev;
3846
3847         mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
3848
3849         mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);
3850
3851         mlxsw_sp_port->learning = 0;
3852         mlxsw_sp_port->learning_sync = 0;
3853         mlxsw_sp_port->uc_flood = 0;
3854         mlxsw_sp_port->bridged = 0;
3855
3856         /* Add implicit VLAN interface in the device, so that untagged
3857          * packets will be classified to the default vFID.
3858          */
3859         mlxsw_sp_port_add_vid(dev, 0, 1);
3860 }
3861
3862 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
3863 {
3864         char sldr_pl[MLXSW_REG_SLDR_LEN];
3865
3866         mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
3867         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3868 }
3869
3870 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
3871 {
3872         char sldr_pl[MLXSW_REG_SLDR_LEN];
3873
3874         mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
3875         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3876 }
3877
3878 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
3879                                      u16 lag_id, u8 port_index)
3880 {
3881         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3882         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3883
3884         mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
3885                                       lag_id, port_index);
3886         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3887 }
3888
3889 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
3890                                         u16 lag_id)
3891 {
3892         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3893         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3894
3895         mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
3896                                          lag_id);
3897         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3898 }
3899
3900 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
3901                                         u16 lag_id)
3902 {
3903         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3904         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3905
3906         mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
3907                                         lag_id);
3908         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3909 }
3910
3911 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
3912                                          u16 lag_id)
3913 {
3914         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3915         char slcor_pl[MLXSW_REG_SLCOR_LEN];
3916
3917         mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
3918                                          lag_id);
3919         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3920 }
3921
3922 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
3923                                   struct net_device *lag_dev,
3924                                   u16 *p_lag_id)
3925 {
3926         struct mlxsw_resources *resources;
3927         struct mlxsw_sp_upper *lag;
3928         int free_lag_id = -1;
3929         int i;
3930
3931         resources = mlxsw_core_resources_get(mlxsw_sp->core);
3932         for (i = 0; i < resources->max_lag; i++) {
3933                 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
3934                 if (lag->ref_count) {
3935                         if (lag->dev == lag_dev) {
3936                                 *p_lag_id = i;
3937                                 return 0;
3938                         }
3939                 } else if (free_lag_id < 0) {
3940                         free_lag_id = i;
3941                 }
3942         }
3943         if (free_lag_id < 0)
3944                 return -EBUSY;
3945         *p_lag_id = free_lag_id;
3946         return 0;
3947 }
3948
3949 static bool
3950 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
3951                           struct net_device *lag_dev,
3952                           struct netdev_lag_upper_info *lag_upper_info)
3953 {
3954         u16 lag_id;
3955
3956         if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
3957                 return false;
3958         if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
3959                 return false;
3960         return true;
3961 }
3962
3963 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
3964                                        u16 lag_id, u8 *p_port_index)
3965 {
3966         struct mlxsw_resources *resources;
3967         int i;
3968
3969         resources = mlxsw_core_resources_get(mlxsw_sp->core);
3970         for (i = 0; i < resources->max_ports_in_lag; i++) {
3971                 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
3972                         *p_port_index = i;
3973                         return 0;
3974                 }
3975         }
3976         return -EBUSY;
3977 }
3978
3979 static void
3980 mlxsw_sp_port_pvid_vport_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
3981                                   u16 lag_id)
3982 {
3983         struct mlxsw_sp_port *mlxsw_sp_vport;
3984         struct mlxsw_sp_fid *f;
3985
3986         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
3987         if (WARN_ON(!mlxsw_sp_vport))
3988                 return;
3989
3990         /* If vPort is assigned a RIF, then leave it since it's no
3991          * longer valid.
3992          */
3993         f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3994         if (f)
3995                 f->leave(mlxsw_sp_vport);
3996
3997         mlxsw_sp_vport->lag_id = lag_id;
3998         mlxsw_sp_vport->lagged = 1;
3999 }
4000
4001 static void
4002 mlxsw_sp_port_pvid_vport_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port)
4003 {
4004         struct mlxsw_sp_port *mlxsw_sp_vport;
4005         struct mlxsw_sp_fid *f;
4006
4007         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
4008         if (WARN_ON(!mlxsw_sp_vport))
4009                 return;
4010
4011         f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4012         if (f)
4013                 f->leave(mlxsw_sp_vport);
4014
4015         mlxsw_sp_vport->lagged = 0;
4016 }
4017
4018 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
4019                                   struct net_device *lag_dev)
4020 {
4021         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4022         struct mlxsw_sp_upper *lag;
4023         u16 lag_id;
4024         u8 port_index;
4025         int err;
4026
4027         err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
4028         if (err)
4029                 return err;
4030         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
4031         if (!lag->ref_count) {
4032                 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
4033                 if (err)
4034                         return err;
4035                 lag->dev = lag_dev;
4036         }
4037
4038         err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
4039         if (err)
4040                 return err;
4041         err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
4042         if (err)
4043                 goto err_col_port_add;
4044         err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
4045         if (err)
4046                 goto err_col_port_enable;
4047
4048         mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
4049                                    mlxsw_sp_port->local_port);
4050         mlxsw_sp_port->lag_id = lag_id;
4051         mlxsw_sp_port->lagged = 1;
4052         lag->ref_count++;
4053
4054         mlxsw_sp_port_pvid_vport_lag_join(mlxsw_sp_port, lag_id);
4055
4056         return 0;
4057
4058 err_col_port_enable:
4059         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
4060 err_col_port_add:
4061         if (!lag->ref_count)
4062                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
4063         return err;
4064 }
4065
4066 static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
4067                                     struct net_device *lag_dev)
4068 {
4069         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4070         u16 lag_id = mlxsw_sp_port->lag_id;
4071         struct mlxsw_sp_upper *lag;
4072
4073         if (!mlxsw_sp_port->lagged)
4074                 return;
4075         lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
4076         WARN_ON(lag->ref_count == 0);
4077
4078         mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
4079         mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
4080
4081         if (mlxsw_sp_port->bridged) {
4082                 mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
4083                 mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4084         }
4085
4086         if (lag->ref_count == 1)
4087                 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
4088
4089         mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
4090                                      mlxsw_sp_port->local_port);
4091         mlxsw_sp_port->lagged = 0;
4092         lag->ref_count--;
4093
4094         mlxsw_sp_port_pvid_vport_lag_leave(mlxsw_sp_port);
4095 }
4096
4097 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
4098                                       u16 lag_id)
4099 {
4100         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4101         char sldr_pl[MLXSW_REG_SLDR_LEN];
4102
4103         mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
4104                                          mlxsw_sp_port->local_port);
4105         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
4106 }
4107
4108 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
4109                                          u16 lag_id)
4110 {
4111         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4112         char sldr_pl[MLXSW_REG_SLDR_LEN];
4113
4114         mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
4115                                             mlxsw_sp_port->local_port);
4116         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
4117 }
4118
4119 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
4120                                        bool lag_tx_enabled)
4121 {
4122         if (lag_tx_enabled)
4123                 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
4124                                                   mlxsw_sp_port->lag_id);
4125         else
4126                 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
4127                                                      mlxsw_sp_port->lag_id);
4128 }
4129
4130 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
4131                                      struct netdev_lag_lower_state_info *info)
4132 {
4133         return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
4134 }
4135
4136 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
4137                                    struct net_device *vlan_dev)
4138 {
4139         struct mlxsw_sp_port *mlxsw_sp_vport;
4140         u16 vid = vlan_dev_vlan_id(vlan_dev);
4141
4142         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4143         if (WARN_ON(!mlxsw_sp_vport))
4144                 return -EINVAL;
4145
4146         mlxsw_sp_vport->dev = vlan_dev;
4147
4148         return 0;
4149 }
4150
4151 static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
4152                                       struct net_device *vlan_dev)
4153 {
4154         struct mlxsw_sp_port *mlxsw_sp_vport;
4155         u16 vid = vlan_dev_vlan_id(vlan_dev);
4156
4157         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4158         if (WARN_ON(!mlxsw_sp_vport))
4159                 return;
4160
4161         mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
4162 }
4163
4164 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
4165                                                unsigned long event, void *ptr)
4166 {
4167         struct netdev_notifier_changeupper_info *info;
4168         struct mlxsw_sp_port *mlxsw_sp_port;
4169         struct net_device *upper_dev;
4170         struct mlxsw_sp *mlxsw_sp;
4171         int err = 0;
4172
4173         mlxsw_sp_port = netdev_priv(dev);
4174         mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4175         info = ptr;
4176
4177         switch (event) {
4178         case NETDEV_PRECHANGEUPPER:
4179                 upper_dev = info->upper_dev;
4180                 if (!is_vlan_dev(upper_dev) &&
4181                     !netif_is_lag_master(upper_dev) &&
4182                     !netif_is_bridge_master(upper_dev))
4183                         return -EINVAL;
4184                 if (!info->linking)
4185                         break;
4186                 if (netdev_has_any_upper_dev(upper_dev))
4187                         return -EINVAL;
4188                 /* HW limitation forbids to put ports to multiple bridges. */
4189                 if (netif_is_bridge_master(upper_dev) &&
4190                     !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
4191                         return -EINVAL;
4192                 if (netif_is_lag_master(upper_dev) &&
4193                     !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
4194                                                info->upper_info))
4195                         return -EINVAL;
4196                 if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev))
4197                         return -EINVAL;
4198                 if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
4199                     !netif_is_lag_master(vlan_dev_real_dev(upper_dev)))
4200                         return -EINVAL;
4201                 break;
4202         case NETDEV_CHANGEUPPER:
4203                 upper_dev = info->upper_dev;
4204                 if (is_vlan_dev(upper_dev)) {
4205                         if (info->linking)
4206                                 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
4207                                                               upper_dev);
4208                         else
4209                                  mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
4210                                                            upper_dev);
4211                 } else if (netif_is_bridge_master(upper_dev)) {
4212                         if (info->linking)
4213                                 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
4214                                                                 upper_dev);
4215                         else
4216                                 mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4217                 } else if (netif_is_lag_master(upper_dev)) {
4218                         if (info->linking)
4219                                 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
4220                                                              upper_dev);
4221                         else
4222                                 mlxsw_sp_port_lag_leave(mlxsw_sp_port,
4223                                                         upper_dev);
4224                 } else {
4225                         err = -EINVAL;
4226                         WARN_ON(1);
4227                 }
4228                 break;
4229         }
4230
4231         return err;
4232 }
4233
4234 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
4235                                                unsigned long event, void *ptr)
4236 {
4237         struct netdev_notifier_changelowerstate_info *info;
4238         struct mlxsw_sp_port *mlxsw_sp_port;
4239         int err;
4240
4241         mlxsw_sp_port = netdev_priv(dev);
4242         info = ptr;
4243
4244         switch (event) {
4245         case NETDEV_CHANGELOWERSTATE:
4246                 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
4247                         err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
4248                                                         info->lower_state_info);
4249                         if (err)
4250                                 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
4251                 }
4252                 break;
4253         }
4254
4255         return 0;
4256 }
4257
4258 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
4259                                          unsigned long event, void *ptr)
4260 {
4261         switch (event) {
4262         case NETDEV_PRECHANGEUPPER:
4263         case NETDEV_CHANGEUPPER:
4264                 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
4265         case NETDEV_CHANGELOWERSTATE:
4266                 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
4267         }
4268
4269         return 0;
4270 }
4271
4272 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
4273                                         unsigned long event, void *ptr)
4274 {
4275         struct net_device *dev;
4276         struct list_head *iter;
4277         int ret;
4278
4279         netdev_for_each_lower_dev(lag_dev, dev, iter) {
4280                 if (mlxsw_sp_port_dev_check(dev)) {
4281                         ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4282                         if (ret)
4283                                 return ret;
4284                 }
4285         }
4286
4287         return 0;
4288 }
4289
4290 static int mlxsw_sp_master_bridge_vlan_link(struct mlxsw_sp *mlxsw_sp,
4291                                             struct net_device *vlan_dev)
4292 {
4293         u16 fid = vlan_dev_vlan_id(vlan_dev);
4294         struct mlxsw_sp_fid *f;
4295
4296         f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4297         if (!f) {
4298                 f = mlxsw_sp_fid_create(mlxsw_sp, fid);
4299                 if (IS_ERR(f))
4300                         return PTR_ERR(f);
4301         }
4302
4303         f->ref_count++;
4304
4305         return 0;
4306 }
4307
4308 static void mlxsw_sp_master_bridge_vlan_unlink(struct mlxsw_sp *mlxsw_sp,
4309                                                struct net_device *vlan_dev)
4310 {
4311         u16 fid = vlan_dev_vlan_id(vlan_dev);
4312         struct mlxsw_sp_fid *f;
4313
4314         f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4315         if (f && f->r)
4316                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4317         if (f && --f->ref_count == 0)
4318                 mlxsw_sp_fid_destroy(mlxsw_sp, f);
4319 }
4320
4321 static int mlxsw_sp_netdevice_bridge_event(struct net_device *br_dev,
4322                                            unsigned long event, void *ptr)
4323 {
4324         struct netdev_notifier_changeupper_info *info;
4325         struct net_device *upper_dev;
4326         struct mlxsw_sp *mlxsw_sp;
4327         int err;
4328
4329         mlxsw_sp = mlxsw_sp_lower_get(br_dev);
4330         if (!mlxsw_sp)
4331                 return 0;
4332         if (br_dev != mlxsw_sp->master_bridge.dev)
4333                 return 0;
4334
4335         info = ptr;
4336
4337         switch (event) {
4338         case NETDEV_CHANGEUPPER:
4339                 upper_dev = info->upper_dev;
4340                 if (!is_vlan_dev(upper_dev))
4341                         break;
4342                 if (info->linking) {
4343                         err = mlxsw_sp_master_bridge_vlan_link(mlxsw_sp,
4344                                                                upper_dev);
4345                         if (err)
4346                                 return err;
4347                 } else {
4348                         mlxsw_sp_master_bridge_vlan_unlink(mlxsw_sp, upper_dev);
4349                 }
4350                 break;
4351         }
4352
4353         return 0;
4354 }
4355
4356 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
4357 {
4358         return find_first_zero_bit(mlxsw_sp->vfids.mapped,
4359                                    MLXSW_SP_VFID_MAX);
4360 }
4361
4362 static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
4363 {
4364         char sfmr_pl[MLXSW_REG_SFMR_LEN];
4365
4366         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
4367         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
4368 }
4369
4370 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
4371
4372 static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
4373                                                  struct net_device *br_dev)
4374 {
4375         struct device *dev = mlxsw_sp->bus_info->dev;
4376         struct mlxsw_sp_fid *f;
4377         u16 vfid, fid;
4378         int err;
4379
4380         vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
4381         if (vfid == MLXSW_SP_VFID_MAX) {
4382                 dev_err(dev, "No available vFIDs\n");
4383                 return ERR_PTR(-ERANGE);
4384         }
4385
4386         fid = mlxsw_sp_vfid_to_fid(vfid);
4387         err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
4388         if (err) {
4389                 dev_err(dev, "Failed to create FID=%d\n", fid);
4390                 return ERR_PTR(err);
4391         }
4392
4393         f = kzalloc(sizeof(*f), GFP_KERNEL);
4394         if (!f)
4395                 goto err_allocate_vfid;
4396
4397         f->leave = mlxsw_sp_vport_vfid_leave;
4398         f->fid = fid;
4399         f->dev = br_dev;
4400
4401         list_add(&f->list, &mlxsw_sp->vfids.list);
4402         set_bit(vfid, mlxsw_sp->vfids.mapped);
4403
4404         return f;
4405
4406 err_allocate_vfid:
4407         mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4408         return ERR_PTR(-ENOMEM);
4409 }
4410
4411 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
4412                                   struct mlxsw_sp_fid *f)
4413 {
4414         u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
4415         u16 fid = f->fid;
4416
4417         clear_bit(vfid, mlxsw_sp->vfids.mapped);
4418         list_del(&f->list);
4419
4420         if (f->r)
4421                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4422
4423         kfree(f);
4424
4425         mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4426 }
4427
4428 static int mlxsw_sp_vport_fid_map(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
4429                                   bool valid)
4430 {
4431         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
4432         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4433
4434         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport, mt, valid, fid,
4435                                             vid);
4436 }
4437
4438 static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
4439                                     struct net_device *br_dev)
4440 {
4441         struct mlxsw_sp_fid *f;
4442         int err;
4443
4444         f = mlxsw_sp_vfid_find(mlxsw_sp_vport->mlxsw_sp, br_dev);
4445         if (!f) {
4446                 f = mlxsw_sp_vfid_create(mlxsw_sp_vport->mlxsw_sp, br_dev);
4447                 if (IS_ERR(f))
4448                         return PTR_ERR(f);
4449         }
4450
4451         err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
4452         if (err)
4453                 goto err_vport_flood_set;
4454
4455         err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
4456         if (err)
4457                 goto err_vport_fid_map;
4458
4459         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
4460         f->ref_count++;
4461
4462         netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", f->fid);
4463
4464         return 0;
4465
4466 err_vport_fid_map:
4467         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
4468 err_vport_flood_set:
4469         if (!f->ref_count)
4470                 mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4471         return err;
4472 }
4473
4474 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4475 {
4476         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4477
4478         netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
4479
4480         mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
4481
4482         mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
4483
4484         mlxsw_sp_port_fdb_flush(mlxsw_sp_vport, f->fid);
4485
4486         mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
4487         if (--f->ref_count == 0)
4488                 mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4489 }
4490
4491 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
4492                                       struct net_device *br_dev)
4493 {
4494         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4495         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4496         struct net_device *dev = mlxsw_sp_vport->dev;
4497         int err;
4498
4499         if (f && !WARN_ON(!f->leave))
4500                 f->leave(mlxsw_sp_vport);
4501
4502         err = mlxsw_sp_vport_vfid_join(mlxsw_sp_vport, br_dev);
4503         if (err) {
4504                 netdev_err(dev, "Failed to join vFID\n");
4505                 return err;
4506         }
4507
4508         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
4509         if (err) {
4510                 netdev_err(dev, "Failed to enable learning\n");
4511                 goto err_port_vid_learning_set;
4512         }
4513
4514         mlxsw_sp_vport->learning = 1;
4515         mlxsw_sp_vport->learning_sync = 1;
4516         mlxsw_sp_vport->uc_flood = 1;
4517         mlxsw_sp_vport->bridged = 1;
4518
4519         return 0;
4520
4521 err_port_vid_learning_set:
4522         mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4523         return err;
4524 }
4525
4526 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4527 {
4528         u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4529
4530         mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
4531
4532         mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4533
4534         mlxsw_sp_vport->learning = 0;
4535         mlxsw_sp_vport->learning_sync = 0;
4536         mlxsw_sp_vport->uc_flood = 0;
4537         mlxsw_sp_vport->bridged = 0;
4538 }
4539
4540 static bool
4541 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
4542                                   const struct net_device *br_dev)
4543 {
4544         struct mlxsw_sp_port *mlxsw_sp_vport;
4545
4546         list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
4547                             vport.list) {
4548                 struct net_device *dev = mlxsw_sp_vport_dev_get(mlxsw_sp_vport);
4549
4550                 if (dev && dev == br_dev)
4551                         return false;
4552         }
4553
4554         return true;
4555 }
4556
4557 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
4558                                           unsigned long event, void *ptr,
4559                                           u16 vid)
4560 {
4561         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
4562         struct netdev_notifier_changeupper_info *info = ptr;
4563         struct mlxsw_sp_port *mlxsw_sp_vport;
4564         struct net_device *upper_dev;
4565         int err = 0;
4566
4567         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4568
4569         switch (event) {
4570         case NETDEV_PRECHANGEUPPER:
4571                 upper_dev = info->upper_dev;
4572                 if (!netif_is_bridge_master(upper_dev))
4573                         return -EINVAL;
4574                 if (!info->linking)
4575                         break;
4576                 if (netdev_has_any_upper_dev(upper_dev))
4577                         return -EINVAL;
4578                 /* We can't have multiple VLAN interfaces configured on
4579                  * the same port and being members in the same bridge.
4580                  */
4581                 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
4582                                                        upper_dev))
4583                         return -EINVAL;
4584                 break;
4585         case NETDEV_CHANGEUPPER:
4586                 upper_dev = info->upper_dev;
4587                 if (info->linking) {
4588                         if (WARN_ON(!mlxsw_sp_vport))
4589                                 return -EINVAL;
4590                         err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
4591                                                          upper_dev);
4592                 } else {
4593                         if (!mlxsw_sp_vport)
4594                                 return 0;
4595                         mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
4596                 }
4597         }
4598
4599         return err;
4600 }
4601
4602 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
4603                                               unsigned long event, void *ptr,
4604                                               u16 vid)
4605 {
4606         struct net_device *dev;
4607         struct list_head *iter;
4608         int ret;
4609
4610         netdev_for_each_lower_dev(lag_dev, dev, iter) {
4611                 if (mlxsw_sp_port_dev_check(dev)) {
4612                         ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
4613                                                              vid);
4614                         if (ret)
4615                                 return ret;
4616                 }
4617         }
4618
4619         return 0;
4620 }
4621
4622 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
4623                                          unsigned long event, void *ptr)
4624 {
4625         struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
4626         u16 vid = vlan_dev_vlan_id(vlan_dev);
4627
4628         if (mlxsw_sp_port_dev_check(real_dev))
4629                 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
4630                                                       vid);
4631         else if (netif_is_lag_master(real_dev))
4632                 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
4633                                                           vid);
4634
4635         return 0;
4636 }
4637
4638 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
4639                                     unsigned long event, void *ptr)
4640 {
4641         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4642         int err = 0;
4643
4644         if (event == NETDEV_CHANGEADDR || event == NETDEV_CHANGEMTU)
4645                 err = mlxsw_sp_netdevice_router_port_event(dev);
4646         else if (mlxsw_sp_port_dev_check(dev))
4647                 err = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4648         else if (netif_is_lag_master(dev))
4649                 err = mlxsw_sp_netdevice_lag_event(dev, event, ptr);
4650         else if (netif_is_bridge_master(dev))
4651                 err = mlxsw_sp_netdevice_bridge_event(dev, event, ptr);
4652         else if (is_vlan_dev(dev))
4653                 err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
4654
4655         return notifier_from_errno(err);
4656 }
4657
4658 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
4659         .notifier_call = mlxsw_sp_netdevice_event,
4660 };
4661
4662 static struct notifier_block mlxsw_sp_inetaddr_nb __read_mostly = {
4663         .notifier_call = mlxsw_sp_inetaddr_event,
4664         .priority = 10, /* Must be called before FIB notifier block */
4665 };
4666
4667 static struct notifier_block mlxsw_sp_router_netevent_nb __read_mostly = {
4668         .notifier_call = mlxsw_sp_router_netevent_event,
4669 };
4670
4671 static int __init mlxsw_sp_module_init(void)
4672 {
4673         int err;
4674
4675         register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4676         register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4677         register_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4678
4679         err = mlxsw_core_driver_register(&mlxsw_sp_driver);
4680         if (err)
4681                 goto err_core_driver_register;
4682         return 0;
4683
4684 err_core_driver_register:
4685         unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4686         unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4687         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4688         return err;
4689 }
4690
4691 static void __exit mlxsw_sp_module_exit(void)
4692 {
4693         mlxsw_core_driver_unregister(&mlxsw_sp_driver);
4694         unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4695         unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4696         unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4697 }
4698
4699 module_init(mlxsw_sp_module_init);
4700 module_exit(mlxsw_sp_module_exit);
4701
4702 MODULE_LICENSE("Dual BSD/GPL");
4703 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
4704 MODULE_DESCRIPTION("Mellanox Spectrum driver");
4705 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);