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