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