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