drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.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/types.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/slab.h>
  42 #include <linux/device.h>
  43 #include <linux/skbuff.h>
  44 #include <linux/if_vlan.h>
  45 #include <linux/if_bridge.h>
  46 #include <linux/workqueue.h>
  47 #include <linux/jiffies.h>
  48 #include <linux/rtnetlink.h>
  49 #include <net/switchdev.h>
  50
  51 #include "spectrum.h"
  52 #include "core.h"
  53 #include "reg.h"
  54
  55 struct mlxsw_sp_bridge_ops;
  56
  57 struct mlxsw_sp_bridge {
  58         struct mlxsw_sp *mlxsw_sp;
  59         struct {
  60                 struct delayed_work dw;
  61 #define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100
  62                 unsigned int interval; /* ms */
  63         } fdb_notify;
  64 #define MLXSW_SP_MIN_AGEING_TIME 10
  65 #define MLXSW_SP_MAX_AGEING_TIME 1000000
  66 #define MLXSW_SP_DEFAULT_AGEING_TIME 300
  67         u32 ageing_time;
  68         bool vlan_enabled_exists;
  69         struct list_head bridges_list;
  70         struct list_head mids_list;
  71         DECLARE_BITMAP(mids_bitmap, MLXSW_SP_MID_MAX);
  72         const struct mlxsw_sp_bridge_ops *bridge_8021q_ops;
  73         const struct mlxsw_sp_bridge_ops *bridge_8021d_ops;
  74 };
  75
  76 struct mlxsw_sp_bridge_device {
  77         struct net_device *dev;
  78         struct list_head list;
  79         struct list_head ports_list;
  80         u8 vlan_enabled:1,
  81            multicast_enabled:1;
  82         const struct mlxsw_sp_bridge_ops *ops;
  83 };
  84
  85 struct mlxsw_sp_bridge_port {
  86         struct net_device *dev;
  87         struct mlxsw_sp_bridge_device *bridge_device;
  88         struct list_head list;
  89         struct list_head vlans_list;
  90         unsigned int ref_count;
  91         u8 stp_state;
  92         unsigned long flags;
  93         bool mrouter;
  94         bool lagged;
  95         union {
  96                 u16 lag_id;
  97                 u16 system_port;
  98         };
  99 };
 100
 101 struct mlxsw_sp_bridge_vlan {
 102         struct list_head list;
 103         struct list_head port_vlan_list;
 104         u16 vid;
 105 };
 106
 107 struct mlxsw_sp_bridge_ops {
 108         int (*port_join)(struct mlxsw_sp_bridge_device *bridge_device,
 109                          struct mlxsw_sp_bridge_port *bridge_port,
 110                          struct mlxsw_sp_port *mlxsw_sp_port);
 111         void (*port_leave)(struct mlxsw_sp_bridge_device *bridge_device,
 112                            struct mlxsw_sp_bridge_port *bridge_port,
 113                            struct mlxsw_sp_port *mlxsw_sp_port);
 114         struct mlxsw_sp_fid *
 115                 (*fid_get)(struct mlxsw_sp_bridge_device *bridge_device,
 116                            u16 vid);
 117 };
 118
 119 static int
 120 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp,
 121                                struct mlxsw_sp_bridge_port *bridge_port,
 122                                u16 fid_index);
 123
 124 static struct mlxsw_sp_bridge_device *
 125 mlxsw_sp_bridge_device_find(const struct mlxsw_sp_bridge *bridge,
 126                             const struct net_device *br_dev)
 127 {
 128         struct mlxsw_sp_bridge_device *bridge_device;
 129
 130         list_for_each_entry(bridge_device, &bridge->bridges_list, list)
 131                 if (bridge_device->dev == br_dev)
 132                         return bridge_device;
 133
 134         return NULL;
 135 }
 136
 137 static struct mlxsw_sp_bridge_device *
 138 mlxsw_sp_bridge_device_create(struct mlxsw_sp_bridge *bridge,
 139                               struct net_device *br_dev)
 140 {
 141         struct device *dev = bridge->mlxsw_sp->bus_info->dev;
 142         struct mlxsw_sp_bridge_device *bridge_device;
 143         bool vlan_enabled = br_vlan_enabled(br_dev);
 144
 145         if (vlan_enabled && bridge->vlan_enabled_exists) {
 146                 dev_err(dev, "Only one VLAN-aware bridge is supported\n");
 147                 return ERR_PTR(-EINVAL);
 148         }
 149
 150         bridge_device = kzalloc(sizeof(*bridge_device), GFP_KERNEL);
 151         if (!bridge_device)
 152                 return ERR_PTR(-ENOMEM);
 153
 154         bridge_device->dev = br_dev;
 155         bridge_device->vlan_enabled = vlan_enabled;
 156         bridge_device->multicast_enabled = br_multicast_enabled(br_dev);
 157         INIT_LIST_HEAD(&bridge_device->ports_list);
 158         if (vlan_enabled) {
 159                 bridge->vlan_enabled_exists = true;
 160                 bridge_device->ops = bridge->bridge_8021q_ops;
 161         } else {
 162                 bridge_device->ops = bridge->bridge_8021d_ops;
 163         }
 164         list_add(&bridge_device->list, &bridge->bridges_list);
 165
 166         return bridge_device;
 167 }
 168
 169 static void
 170 mlxsw_sp_bridge_device_destroy(struct mlxsw_sp_bridge *bridge,
 171                                struct mlxsw_sp_bridge_device *bridge_device)
 172 {
 173         list_del(&bridge_device->list);
 174         if (bridge_device->vlan_enabled)
 175                 bridge->vlan_enabled_exists = false;
 176         WARN_ON(!list_empty(&bridge_device->ports_list));
 177         kfree(bridge_device);
 178 }
 179
 180 static struct mlxsw_sp_bridge_device *
 181 mlxsw_sp_bridge_device_get(struct mlxsw_sp_bridge *bridge,
 182                            struct net_device *br_dev)
 183 {
 184         struct mlxsw_sp_bridge_device *bridge_device;
 185
 186         bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev);
 187         if (bridge_device)
 188                 return bridge_device;
 189
 190         return mlxsw_sp_bridge_device_create(bridge, br_dev);
 191 }
 192
 193 static void
 194 mlxsw_sp_bridge_device_put(struct mlxsw_sp_bridge *bridge,
 195                            struct mlxsw_sp_bridge_device *bridge_device)
 196 {
 197         if (list_empty(&bridge_device->ports_list))
 198                 mlxsw_sp_bridge_device_destroy(bridge, bridge_device);
 199 }
 200
 201 static struct mlxsw_sp_bridge_port *
 202 __mlxsw_sp_bridge_port_find(const struct mlxsw_sp_bridge_device *bridge_device,
 203                             const struct net_device *brport_dev)
 204 {
 205         struct mlxsw_sp_bridge_port *bridge_port;
 206
 207         list_for_each_entry(bridge_port, &bridge_device->ports_list, list) {
 208                 if (bridge_port->dev == brport_dev)
 209                         return bridge_port;
 210         }
 211
 212         return NULL;
 213 }
 214
 215 static struct mlxsw_sp_bridge_port *
 216 mlxsw_sp_bridge_port_find(struct mlxsw_sp_bridge *bridge,
 217                           struct net_device *brport_dev)
 218 {
 219         struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev);
 220         struct mlxsw_sp_bridge_device *bridge_device;
 221
 222         if (!br_dev)
 223                 return NULL;
 224
 225         bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev);
 226         if (!bridge_device)
 227                 return NULL;
 228
 229         return __mlxsw_sp_bridge_port_find(bridge_device, brport_dev);
 230 }
 231
 232 static struct mlxsw_sp_bridge_port *
 233 mlxsw_sp_bridge_port_create(struct mlxsw_sp_bridge_device *bridge_device,
 234                             struct net_device *brport_dev)
 235 {
 236         struct mlxsw_sp_bridge_port *bridge_port;
 237         struct mlxsw_sp_port *mlxsw_sp_port;
 238
 239         bridge_port = kzalloc(sizeof(*bridge_port), GFP_KERNEL);
 240         if (!bridge_port)
 241                 return NULL;
 242
 243         mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(brport_dev);
 244         bridge_port->lagged = mlxsw_sp_port->lagged;
 245         if (bridge_port->lagged)
 246                 bridge_port->lag_id = mlxsw_sp_port->lag_id;
 247         else
 248                 bridge_port->system_port = mlxsw_sp_port->local_port;
 249         bridge_port->dev = brport_dev;
 250         bridge_port->bridge_device = bridge_device;
 251         bridge_port->stp_state = BR_STATE_DISABLED;
 252         bridge_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC;
 253         INIT_LIST_HEAD(&bridge_port->vlans_list);
 254         list_add(&bridge_port->list, &bridge_device->ports_list);
 255         bridge_port->ref_count = 1;
 256
 257         return bridge_port;
 258 }
 259
 260 static void
 261 mlxsw_sp_bridge_port_destroy(struct mlxsw_sp_bridge_port *bridge_port)
 262 {
 263         list_del(&bridge_port->list);
 264         WARN_ON(!list_empty(&bridge_port->vlans_list));
 265         kfree(bridge_port);
 266 }
 267
 268 static bool
 269 mlxsw_sp_bridge_port_should_destroy(const struct mlxsw_sp_bridge_port *
 270                                     bridge_port)
 271 {
 272         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_port->dev);
 273
 274         /* In case ports were pulled from out of a bridged LAG, then
 275          * it's possible the reference count isn't zero, yet the bridge
 276          * port should be destroyed, as it's no longer an upper of ours.
 277          */
 278         if (!mlxsw_sp && list_empty(&bridge_port->vlans_list))
 279                 return true;
 280         else if (bridge_port->ref_count == 0)
 281                 return true;
 282         else
 283                 return false;
 284 }
 285
 286 static struct mlxsw_sp_bridge_port *
 287 mlxsw_sp_bridge_port_get(struct mlxsw_sp_bridge *bridge,
 288                          struct net_device *brport_dev)
 289 {
 290         struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev);
 291         struct mlxsw_sp_bridge_device *bridge_device;
 292         struct mlxsw_sp_bridge_port *bridge_port;
 293         int err;
 294
 295         bridge_port = mlxsw_sp_bridge_port_find(bridge, brport_dev);
 296         if (bridge_port) {
 297                 bridge_port->ref_count++;
 298                 return bridge_port;
 299         }
 300
 301         bridge_device = mlxsw_sp_bridge_device_get(bridge, br_dev);
 302         if (IS_ERR(bridge_device))
 303                 return ERR_CAST(bridge_device);
 304
 305         bridge_port = mlxsw_sp_bridge_port_create(bridge_device, brport_dev);
 306         if (!bridge_port) {
 307                 err = -ENOMEM;
 308                 goto err_bridge_port_create;
 309         }
 310
 311         return bridge_port;
 312
 313 err_bridge_port_create:
 314         mlxsw_sp_bridge_device_put(bridge, bridge_device);
 315         return ERR_PTR(err);
 316 }
 317
 318 static void mlxsw_sp_bridge_port_put(struct mlxsw_sp_bridge *bridge,
 319                                      struct mlxsw_sp_bridge_port *bridge_port)
 320 {
 321         struct mlxsw_sp_bridge_device *bridge_device;
 322
 323         bridge_port->ref_count--;
 324         if (!mlxsw_sp_bridge_port_should_destroy(bridge_port))
 325                 return;
 326         bridge_device = bridge_port->bridge_device;
 327         mlxsw_sp_bridge_port_destroy(bridge_port);
 328         mlxsw_sp_bridge_device_put(bridge, bridge_device);
 329 }
 330
 331 static struct mlxsw_sp_port_vlan *
 332 mlxsw_sp_port_vlan_find_by_bridge(struct mlxsw_sp_port *mlxsw_sp_port,
 333                                   const struct mlxsw_sp_bridge_device *
 334                                   bridge_device,
 335                                   u16 vid)
 336 {
 337         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
 338
 339         list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list,
 340                             list) {
 341                 if (!mlxsw_sp_port_vlan->bridge_port)
 342                         continue;
 343                 if (mlxsw_sp_port_vlan->bridge_port->bridge_device !=
 344                     bridge_device)
 345                         continue;
 346                 if (bridge_device->vlan_enabled &&
 347                     mlxsw_sp_port_vlan->vid != vid)
 348                         continue;
 349                 return mlxsw_sp_port_vlan;
 350         }
 351
 352         return NULL;
 353 }
 354
 355 static struct mlxsw_sp_port_vlan*
 356 mlxsw_sp_port_vlan_find_by_fid(struct mlxsw_sp_port *mlxsw_sp_port,
 357                                u16 fid_index)
 358 {
 359         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
 360
 361         list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list,
 362                             list) {
 363                 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
 364
 365                 if (fid && mlxsw_sp_fid_index(fid) == fid_index)
 366                         return mlxsw_sp_port_vlan;
 367         }
 368
 369         return NULL;
 370 }
 371
 372 static struct mlxsw_sp_bridge_vlan *
 373 mlxsw_sp_bridge_vlan_find(const struct mlxsw_sp_bridge_port *bridge_port,
 374                           u16 vid)
 375 {
 376         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 377
 378         list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
 379                 if (bridge_vlan->vid == vid)
 380                         return bridge_vlan;
 381         }
 382
 383         return NULL;
 384 }
 385
 386 static struct mlxsw_sp_bridge_vlan *
 387 mlxsw_sp_bridge_vlan_create(struct mlxsw_sp_bridge_port *bridge_port, u16 vid)
 388 {
 389         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 390
 391         bridge_vlan = kzalloc(sizeof(*bridge_vlan), GFP_KERNEL);
 392         if (!bridge_vlan)
 393                 return NULL;
 394
 395         INIT_LIST_HEAD(&bridge_vlan->port_vlan_list);
 396         bridge_vlan->vid = vid;
 397         list_add(&bridge_vlan->list, &bridge_port->vlans_list);
 398
 399         return bridge_vlan;
 400 }
 401
 402 static void
 403 mlxsw_sp_bridge_vlan_destroy(struct mlxsw_sp_bridge_vlan *bridge_vlan)
 404 {
 405         list_del(&bridge_vlan->list);
 406         WARN_ON(!list_empty(&bridge_vlan->port_vlan_list));
 407         kfree(bridge_vlan);
 408 }
 409
 410 static struct mlxsw_sp_bridge_vlan *
 411 mlxsw_sp_bridge_vlan_get(struct mlxsw_sp_bridge_port *bridge_port, u16 vid)
 412 {
 413         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 414
 415         bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid);
 416         if (bridge_vlan)
 417                 return bridge_vlan;
 418
 419         return mlxsw_sp_bridge_vlan_create(bridge_port, vid);
 420 }
 421
 422 static void mlxsw_sp_bridge_vlan_put(struct mlxsw_sp_bridge_vlan *bridge_vlan)
 423 {
 424         if (list_empty(&bridge_vlan->port_vlan_list))
 425                 mlxsw_sp_bridge_vlan_destroy(bridge_vlan);
 426 }
 427
 428 static void mlxsw_sp_port_bridge_flags_get(struct mlxsw_sp_bridge *bridge,
 429                                            struct net_device *dev,
 430                                            unsigned long *brport_flags)
 431 {
 432         struct mlxsw_sp_bridge_port *bridge_port;
 433
 434         bridge_port = mlxsw_sp_bridge_port_find(bridge, dev);
 435         if (WARN_ON(!bridge_port))
 436                 return;
 437
 438         memcpy(brport_flags, &bridge_port->flags, sizeof(*brport_flags));
 439 }
 440
 441 static int mlxsw_sp_port_attr_get(struct net_device *dev,
 442                                   struct switchdev_attr *attr)
 443 {
 444         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 445         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 446
 447         switch (attr->id) {
 448         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
 449                 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
 450                 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
 451                        attr->u.ppid.id_len);
 452                 break;
 453         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 454                 mlxsw_sp_port_bridge_flags_get(mlxsw_sp->bridge, attr->orig_dev,
 455                                                &attr->u.brport_flags);
 456                 break;
 457         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
 458                 attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD;
 459                 break;
 460         default:
 461                 return -EOPNOTSUPP;
 462         }
 463
 464         return 0;
 465 }
 466
 467 static int
 468 mlxsw_sp_port_bridge_vlan_stp_set(struct mlxsw_sp_port *mlxsw_sp_port,
 469                                   struct mlxsw_sp_bridge_vlan *bridge_vlan,
 470                                   u8 state)
 471 {
 472         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
 473
 474         list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list,
 475                             bridge_vlan_node) {
 476                 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port)
 477                         continue;
 478                 return mlxsw_sp_port_vid_stp_set(mlxsw_sp_port,
 479                                                  bridge_vlan->vid, state);
 480         }
 481
 482         return 0;
 483 }
 484
 485 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 486                                             struct switchdev_trans *trans,
 487                                             struct net_device *orig_dev,
 488                                             u8 state)
 489 {
 490         struct mlxsw_sp_bridge_port *bridge_port;
 491         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 492         int err;
 493
 494         if (switchdev_trans_ph_prepare(trans))
 495                 return 0;
 496
 497         /* It's possible we failed to enslave the port, yet this
 498          * operation is executed due to it being deferred.
 499          */
 500         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
 501                                                 orig_dev);
 502         if (!bridge_port)
 503                 return 0;
 504
 505         list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
 506                 err = mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port,
 507                                                         bridge_vlan, state);
 508                 if (err)
 509                         goto err_port_bridge_vlan_stp_set;
 510         }
 511
 512         bridge_port->stp_state = state;
 513
 514         return 0;
 515
 516 err_port_bridge_vlan_stp_set:
 517         list_for_each_entry_continue_reverse(bridge_vlan,
 518                                              &bridge_port->vlans_list, list)
 519                 mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port, bridge_vlan,
 520                                                   bridge_port->stp_state);
 521         return err;
 522 }
 523
 524 static int
 525 mlxsw_sp_port_bridge_vlan_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 526                                     struct mlxsw_sp_bridge_vlan *bridge_vlan,
 527                                     enum mlxsw_sp_flood_type packet_type,
 528                                     bool member)
 529 {
 530         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
 531
 532         list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list,
 533                             bridge_vlan_node) {
 534                 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port)
 535                         continue;
 536                 return mlxsw_sp_fid_flood_set(mlxsw_sp_port_vlan->fid,
 537                                               packet_type,
 538                                               mlxsw_sp_port->local_port,
 539                                               member);
 540         }
 541
 542         return 0;
 543 }
 544
 545 static int
 546 mlxsw_sp_bridge_port_flood_table_set(struct mlxsw_sp_port *mlxsw_sp_port,
 547                                      struct mlxsw_sp_bridge_port *bridge_port,
 548                                      enum mlxsw_sp_flood_type packet_type,
 549                                      bool member)
 550 {
 551         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 552         int err;
 553
 554         list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
 555                 err = mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port,
 556                                                           bridge_vlan,
 557                                                           packet_type,
 558                                                           member);
 559                 if (err)
 560                         goto err_port_bridge_vlan_flood_set;
 561         }
 562
 563         return 0;
 564
 565 err_port_bridge_vlan_flood_set:
 566         list_for_each_entry_continue_reverse(bridge_vlan,
 567                                              &bridge_port->vlans_list, list)
 568                 mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port, bridge_vlan,
 569                                                     packet_type, !member);
 570         return err;
 571 }
 572
 573 static int
 574 mlxsw_sp_port_bridge_vlan_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 575                                        struct mlxsw_sp_bridge_vlan *bridge_vlan,
 576                                        bool set)
 577 {
 578         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
 579         u16 vid = bridge_vlan->vid;
 580
 581         list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list,
 582                             bridge_vlan_node) {
 583                 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port)
 584                         continue;
 585                 return mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, set);
 586         }
 587
 588         return 0;
 589 }
 590
 591 static int
 592 mlxsw_sp_bridge_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 593                                   struct mlxsw_sp_bridge_port *bridge_port,
 594                                   bool set)
 595 {
 596         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 597         int err;
 598
 599         list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
 600                 err = mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port,
 601                                                              bridge_vlan, set);
 602                 if (err)
 603                         goto err_port_bridge_vlan_learning_set;
 604         }
 605
 606         return 0;
 607
 608 err_port_bridge_vlan_learning_set:
 609         list_for_each_entry_continue_reverse(bridge_vlan,
 610                                              &bridge_port->vlans_list, list)
 611                 mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port,
 612                                                        bridge_vlan, !set);
 613         return err;
 614 }
 615
 616 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 617                                            struct switchdev_trans *trans,
 618                                            struct net_device *orig_dev,
 619                                            unsigned long brport_flags)
 620 {
 621         struct mlxsw_sp_bridge_port *bridge_port;
 622         int err;
 623
 624         if (switchdev_trans_ph_prepare(trans))
 625                 return 0;
 626
 627         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
 628                                                 orig_dev);
 629         if (!bridge_port)
 630                 return 0;
 631
 632         err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
 633                                                    MLXSW_SP_FLOOD_TYPE_UC,
 634                                                    brport_flags & BR_FLOOD);
 635         if (err)
 636                 return err;
 637
 638         err = mlxsw_sp_bridge_port_learning_set(mlxsw_sp_port, bridge_port,
 639                                                 brport_flags & BR_LEARNING);
 640         if (err)
 641                 return err;
 642
 643         memcpy(&bridge_port->flags, &brport_flags, sizeof(brport_flags));
 644
 645         return 0;
 646 }
 647
 648 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 649 {
 650         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 651         int err;
 652
 653         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 654         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 655         if (err)
 656                 return err;
 657         mlxsw_sp->bridge->ageing_time = ageing_time;
 658         return 0;
 659 }
 660
 661 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 662                                             struct switchdev_trans *trans,
 663                                             unsigned long ageing_clock_t)
 664 {
 665         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 666         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 667         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 668
 669         if (switchdev_trans_ph_prepare(trans)) {
 670                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 671                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 672                         return -ERANGE;
 673                 else
 674                         return 0;
 675         }
 676
 677         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 678 }
 679
 680 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 681                                           struct switchdev_trans *trans,
 682                                           struct net_device *orig_dev,
 683                                           bool vlan_enabled)
 684 {
 685         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 686         struct mlxsw_sp_bridge_device *bridge_device;
 687
 688         if (!switchdev_trans_ph_prepare(trans))
 689                 return 0;
 690
 691         bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev);
 692         if (WARN_ON(!bridge_device))
 693                 return -EINVAL;
 694
 695         if (bridge_device->vlan_enabled == vlan_enabled)
 696                 return 0;
 697
 698         netdev_err(bridge_device->dev, "VLAN filtering can't be changed for existing bridge\n");
 699         return -EINVAL;
 700 }
 701
 702 static int mlxsw_sp_port_attr_mc_router_set(struct mlxsw_sp_port *mlxsw_sp_port,
 703                                             struct switchdev_trans *trans,
 704                                             struct net_device *orig_dev,
 705                                             bool is_port_mc_router)
 706 {
 707         struct mlxsw_sp_bridge_port *bridge_port;
 708
 709         if (switchdev_trans_ph_prepare(trans))
 710                 return 0;
 711
 712         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
 713                                                 orig_dev);
 714         if (!bridge_port)
 715                 return 0;
 716
 717         if (!bridge_port->bridge_device->multicast_enabled)
 718                 return 0;
 719
 720         return mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
 721                                                     MLXSW_SP_FLOOD_TYPE_MC,
 722                                                     is_port_mc_router);
 723 }
 724
 725 static int mlxsw_sp_port_mc_disabled_set(struct mlxsw_sp_port *mlxsw_sp_port,
 726                                          struct switchdev_trans *trans,
 727                                          struct net_device *orig_dev,
 728                                          bool mc_disabled)
 729 {
 730         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 731         struct mlxsw_sp_bridge_device *bridge_device;
 732         struct mlxsw_sp_bridge_port *bridge_port;
 733         int err;
 734
 735         if (switchdev_trans_ph_prepare(trans))
 736                 return 0;
 737
 738         /* It's possible we failed to enslave the port, yet this
 739          * operation is executed due to it being deferred.
 740          */
 741         bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev);
 742         if (!bridge_device)
 743                 return 0;
 744
 745         list_for_each_entry(bridge_port, &bridge_device->ports_list, list) {
 746                 enum mlxsw_sp_flood_type packet_type = MLXSW_SP_FLOOD_TYPE_MC;
 747                 bool member = mc_disabled ? true : bridge_port->mrouter;
 748
 749                 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port,
 750                                                            bridge_port,
 751                                                            packet_type, member);
 752                 if (err)
 753                         return err;
 754         }
 755
 756         bridge_device->multicast_enabled = !mc_disabled;
 757
 758         return 0;
 759 }
 760
 761 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 762                                   const struct switchdev_attr *attr,
 763                                   struct switchdev_trans *trans)
 764 {
 765         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 766         int err;
 767
 768         switch (attr->id) {
 769         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 770                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 771                                                        attr->orig_dev,
 772                                                        attr->u.stp_state);
 773                 break;
 774         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 775                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 776                                                       attr->orig_dev,
 777                                                       attr->u.brport_flags);
 778                 break;
 779         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 780                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 781                                                        attr->u.ageing_time);
 782                 break;
 783         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 784                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 785                                                      attr->orig_dev,
 786                                                      attr->u.vlan_filtering);
 787                 break;
 788         case SWITCHDEV_ATTR_ID_PORT_MROUTER:
 789                 err = mlxsw_sp_port_attr_mc_router_set(mlxsw_sp_port, trans,
 790                                                        attr->orig_dev,
 791                                                        attr->u.mrouter);
 792                 break;
 793         case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
 794                 err = mlxsw_sp_port_mc_disabled_set(mlxsw_sp_port, trans,
 795                                                     attr->orig_dev,
 796                                                     attr->u.mc_disabled);
 797                 break;
 798         default:
 799                 err = -EOPNOTSUPP;
 800                 break;
 801         }
 802
 803         return err;
 804 }
 805
 806 static bool mlxsw_sp_mc_flood(const struct mlxsw_sp_bridge_port *bridge_port)
 807 {
 808         const struct mlxsw_sp_bridge_device *bridge_device;
 809
 810         bridge_device = bridge_port->bridge_device;
 811         return !bridge_device->multicast_enabled ? true : bridge_port->mrouter;
 812 }
 813
 814 static int
 815 mlxsw_sp_port_vlan_fid_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
 816                             struct mlxsw_sp_bridge_port *bridge_port)
 817 {
 818         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
 819         struct mlxsw_sp_bridge_device *bridge_device;
 820         u8 local_port = mlxsw_sp_port->local_port;
 821         u16 vid = mlxsw_sp_port_vlan->vid;
 822         struct mlxsw_sp_fid *fid;
 823         int err;
 824
 825         bridge_device = bridge_port->bridge_device;
 826         fid = bridge_device->ops->fid_get(bridge_device, vid);
 827         if (IS_ERR(fid))
 828                 return PTR_ERR(fid);
 829
 830         err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port,
 831                                      bridge_port->flags & BR_FLOOD);
 832         if (err)
 833                 goto err_fid_uc_flood_set;
 834
 835         err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port,
 836                                      mlxsw_sp_mc_flood(bridge_port));
 837         if (err)
 838                 goto err_fid_mc_flood_set;
 839
 840         err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port,
 841                                      true);
 842         if (err)
 843                 goto err_fid_bc_flood_set;
 844
 845         err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid);
 846         if (err)
 847                 goto err_fid_port_vid_map;
 848
 849         mlxsw_sp_port_vlan->fid = fid;
 850
 851         return 0;
 852
 853 err_fid_port_vid_map:
 854         mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false);
 855 err_fid_bc_flood_set:
 856         mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false);
 857 err_fid_mc_flood_set:
 858         mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false);
 859 err_fid_uc_flood_set:
 860         mlxsw_sp_fid_put(fid);
 861         return err;
 862 }
 863
 864 static void
 865 mlxsw_sp_port_vlan_fid_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
 866 {
 867         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
 868         struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
 869         u8 local_port = mlxsw_sp_port->local_port;
 870         u16 vid = mlxsw_sp_port_vlan->vid;
 871
 872         mlxsw_sp_port_vlan->fid = NULL;
 873         mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
 874         mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false);
 875         mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false);
 876         mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false);
 877         mlxsw_sp_fid_put(fid);
 878 }
 879
 880 static u16
 881 mlxsw_sp_port_pvid_determine(const struct mlxsw_sp_port *mlxsw_sp_port,
 882                              u16 vid, bool is_pvid)
 883 {
 884         if (is_pvid)
 885                 return vid;
 886         else if (mlxsw_sp_port->pvid == vid)
 887                 return 0;       /* Dis-allow untagged packets */
 888         else
 889                 return mlxsw_sp_port->pvid;
 890 }
 891
 892 static int
 893 mlxsw_sp_port_vlan_bridge_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
 894                                struct mlxsw_sp_bridge_port *bridge_port)
 895 {
 896         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
 897         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 898         u16 vid = mlxsw_sp_port_vlan->vid;
 899         int err;
 900
 901         /* No need to continue if only VLAN flags were changed */
 902         if (mlxsw_sp_port_vlan->bridge_port)
 903                 return 0;
 904
 905         err = mlxsw_sp_port_vlan_fid_join(mlxsw_sp_port_vlan, bridge_port);
 906         if (err)
 907                 return err;
 908
 909         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid,
 910                                              bridge_port->flags & BR_LEARNING);
 911         if (err)
 912                 goto err_port_vid_learning_set;
 913
 914         err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid,
 915                                         bridge_port->stp_state);
 916         if (err)
 917                 goto err_port_vid_stp_set;
 918
 919         bridge_vlan = mlxsw_sp_bridge_vlan_get(bridge_port, vid);
 920         if (!bridge_vlan) {
 921                 err = -ENOMEM;
 922                 goto err_bridge_vlan_get;
 923         }
 924
 925         list_add(&mlxsw_sp_port_vlan->bridge_vlan_node,
 926                  &bridge_vlan->port_vlan_list);
 927
 928         mlxsw_sp_bridge_port_get(mlxsw_sp_port->mlxsw_sp->bridge,
 929                                  bridge_port->dev);
 930         mlxsw_sp_port_vlan->bridge_port = bridge_port;
 931
 932         return 0;
 933
 934 err_bridge_vlan_get:
 935         mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED);
 936 err_port_vid_stp_set:
 937         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
 938 err_port_vid_learning_set:
 939         mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan);
 940         return err;
 941 }
 942
 943 void
 944 mlxsw_sp_port_vlan_bridge_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
 945 {
 946         struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
 947         struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
 948         struct mlxsw_sp_bridge_vlan *bridge_vlan;
 949         struct mlxsw_sp_bridge_port *bridge_port;
 950         u16 vid = mlxsw_sp_port_vlan->vid;
 951         bool last;
 952
 953         if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021Q &&
 954                     mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021D))
 955                 return;
 956
 957         bridge_port = mlxsw_sp_port_vlan->bridge_port;
 958         bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid);
 959         last = list_is_singular(&bridge_vlan->port_vlan_list);
 960
 961         list_del(&mlxsw_sp_port_vlan->bridge_vlan_node);
 962         mlxsw_sp_bridge_vlan_put(bridge_vlan);
 963         mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED);
 964         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
 965         if (last)
 966                 mlxsw_sp_bridge_port_fdb_flush(mlxsw_sp_port->mlxsw_sp,
 967                                                bridge_port,
 968                                                mlxsw_sp_fid_index(fid));
 969         mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan);
 970
 971         mlxsw_sp_bridge_port_put(mlxsw_sp_port->mlxsw_sp->bridge, bridge_port);
 972         mlxsw_sp_port_vlan->bridge_port = NULL;
 973 }
 974
 975 static int
 976 mlxsw_sp_bridge_port_vlan_add(struct mlxsw_sp_port *mlxsw_sp_port,
 977                               struct mlxsw_sp_bridge_port *bridge_port,
 978                               u16 vid, bool is_untagged, bool is_pvid)
 979 {
 980         u16 pvid = mlxsw_sp_port_pvid_determine(mlxsw_sp_port, vid, is_pvid);
 981         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
 982         u16 old_pvid = mlxsw_sp_port->pvid;
 983         int err;
 984
 985         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid);
 986         if (IS_ERR(mlxsw_sp_port_vlan))
 987                 return PTR_ERR(mlxsw_sp_port_vlan);
 988
 989         err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true,
 990                                      is_untagged);
 991         if (err)
 992                 goto err_port_vlan_set;
 993
 994         err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid);
 995         if (err)
 996                 goto err_port_pvid_set;
 997
 998         err = mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port);
 999         if (err)
1000                 goto err_port_vlan_bridge_join;
1001
1002         return 0;
1003
1004 err_port_vlan_bridge_join:
1005         mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
1006 err_port_pvid_set:
1007         mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
1008 err_port_vlan_set:
1009         mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
1010         return err;
1011 }
1012
1013 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
1014                                    const struct switchdev_obj_port_vlan *vlan,
1015                                    struct switchdev_trans *trans)
1016 {
1017         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1018         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1019         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1020         struct net_device *orig_dev = vlan->obj.orig_dev;
1021         struct mlxsw_sp_bridge_port *bridge_port;
1022         u16 vid;
1023
1024         if (switchdev_trans_ph_prepare(trans))
1025                 return 0;
1026
1027         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
1028         if (WARN_ON(!bridge_port))
1029                 return -EINVAL;
1030
1031         if (!bridge_port->bridge_device->vlan_enabled)
1032                 return 0;
1033
1034         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
1035                 int err;
1036
1037                 err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port,
1038                                                     vid, flag_untagged,
1039                                                     flag_pvid);
1040                 if (err)
1041                         return err;
1042         }
1043
1044         return 0;
1045 }
1046
1047 static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged)
1048 {
1049         return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID :
1050                         MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID;
1051 }
1052
1053 static int
1054 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp,
1055                                struct mlxsw_sp_bridge_port *bridge_port,
1056                                u16 fid_index)
1057 {
1058         bool lagged = bridge_port->lagged;
1059         char sfdf_pl[MLXSW_REG_SFDF_LEN];
1060         u16 system_port;
1061
1062         system_port = lagged ? bridge_port->lag_id : bridge_port->system_port;
1063         mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged));
1064         mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index);
1065         mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port);
1066
1067         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
1068 }
1069
1070 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
1071 {
1072         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
1073                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
1074 }
1075
1076 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
1077 {
1078         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
1079                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
1080 }
1081
1082 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
1083                                      const char *mac, u16 fid, bool adding,
1084                                      enum mlxsw_reg_sfd_rec_action action,
1085                                      bool dynamic)
1086 {
1087         char *sfd_pl;
1088         int err;
1089
1090         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1091         if (!sfd_pl)
1092                 return -ENOMEM;
1093
1094         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
1095         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
1096                               mac, fid, action, local_port);
1097         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1098         kfree(sfd_pl);
1099
1100         return err;
1101 }
1102
1103 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
1104                                    const char *mac, u16 fid, bool adding,
1105                                    bool dynamic)
1106 {
1107         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
1108                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
1109 }
1110
1111 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
1112                         bool adding)
1113 {
1114         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
1115                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
1116                                          false);
1117 }
1118
1119 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
1120                                        const char *mac, u16 fid, u16 lag_vid,
1121                                        bool adding, bool dynamic)
1122 {
1123         char *sfd_pl;
1124         int err;
1125
1126         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1127         if (!sfd_pl)
1128                 return -ENOMEM;
1129
1130         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
1131         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
1132                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
1133                                   lag_vid, lag_id);
1134         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1135         kfree(sfd_pl);
1136
1137         return err;
1138 }
1139
1140 static int
1141 mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port,
1142                       struct switchdev_notifier_fdb_info *fdb_info, bool adding)
1143 {
1144         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1145         struct net_device *orig_dev = fdb_info->info.dev;
1146         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1147         struct mlxsw_sp_bridge_device *bridge_device;
1148         struct mlxsw_sp_bridge_port *bridge_port;
1149         u16 fid_index, vid;
1150
1151         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
1152         if (!bridge_port)
1153                 return -EINVAL;
1154
1155         bridge_device = bridge_port->bridge_device;
1156         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
1157                                                                bridge_device,
1158                                                                fdb_info->vid);
1159         if (!mlxsw_sp_port_vlan)
1160                 return 0;
1161
1162         fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
1163         vid = mlxsw_sp_port_vlan->vid;
1164
1165         if (!bridge_port->lagged)
1166                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp,
1167                                                bridge_port->system_port,
1168                                                fdb_info->addr, fid_index,
1169                                                adding, false);
1170         else
1171                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp,
1172                                                    bridge_port->lag_id,
1173                                                    fdb_info->addr, fid_index,
1174                                                    vid, adding, false);
1175 }
1176
1177 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
1178                                 u16 fid, u16 mid, bool adding)
1179 {
1180         char *sfd_pl;
1181         int err;
1182
1183         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1184         if (!sfd_pl)
1185                 return -ENOMEM;
1186
1187         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
1188         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
1189                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
1190         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1191         kfree(sfd_pl);
1192         return err;
1193 }
1194
1195 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
1196                                   bool add, bool clear_all_ports)
1197 {
1198         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1199         char *smid_pl;
1200         int err, i;
1201
1202         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
1203         if (!smid_pl)
1204                 return -ENOMEM;
1205
1206         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
1207         if (clear_all_ports) {
1208                 for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++)
1209                         if (mlxsw_sp->ports[i])
1210                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
1211         }
1212         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
1213         kfree(smid_pl);
1214         return err;
1215 }
1216
1217 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
1218                                               const unsigned char *addr,
1219                                               u16 fid)
1220 {
1221         struct mlxsw_sp_mid *mid;
1222
1223         list_for_each_entry(mid, &mlxsw_sp->bridge->mids_list, list) {
1224                 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid)
1225                         return mid;
1226         }
1227         return NULL;
1228 }
1229
1230 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
1231                                                 const unsigned char *addr,
1232                                                 u16 fid)
1233 {
1234         struct mlxsw_sp_mid *mid;
1235         u16 mid_idx;
1236
1237         mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap,
1238                                       MLXSW_SP_MID_MAX);
1239         if (mid_idx == MLXSW_SP_MID_MAX)
1240                 return NULL;
1241
1242         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
1243         if (!mid)
1244                 return NULL;
1245
1246         set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap);
1247         ether_addr_copy(mid->addr, addr);
1248         mid->fid = fid;
1249         mid->mid = mid_idx;
1250         mid->ref_count = 0;
1251         list_add_tail(&mid->list, &mlxsw_sp->bridge->mids_list);
1252
1253         return mid;
1254 }
1255
1256 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
1257                                  struct mlxsw_sp_mid *mid)
1258 {
1259         if (--mid->ref_count == 0) {
1260                 list_del(&mid->list);
1261                 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap);
1262                 kfree(mid);
1263                 return 1;
1264         }
1265         return 0;
1266 }
1267
1268 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
1269                                  const struct switchdev_obj_port_mdb *mdb,
1270                                  struct switchdev_trans *trans)
1271 {
1272         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1273         struct net_device *orig_dev = mdb->obj.orig_dev;
1274         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1275         struct net_device *dev = mlxsw_sp_port->dev;
1276         struct mlxsw_sp_bridge_device *bridge_device;
1277         struct mlxsw_sp_bridge_port *bridge_port;
1278         struct mlxsw_sp_mid *mid;
1279         u16 fid_index;
1280         int err = 0;
1281
1282         if (switchdev_trans_ph_prepare(trans))
1283                 return 0;
1284
1285         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
1286         if (!bridge_port)
1287                 return 0;
1288
1289         bridge_device = bridge_port->bridge_device;
1290         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
1291                                                                bridge_device,
1292                                                                mdb->vid);
1293         if (!mlxsw_sp_port_vlan)
1294                 return 0;
1295
1296         fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
1297
1298         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid_index);
1299         if (!mid) {
1300                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, fid_index);
1301                 if (!mid) {
1302                         netdev_err(dev, "Unable to allocate MC group\n");
1303                         return -ENOMEM;
1304                 }
1305         }
1306         mid->ref_count++;
1307
1308         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
1309                                      mid->ref_count == 1);
1310         if (err) {
1311                 netdev_err(dev, "Unable to set SMID\n");
1312                 goto err_out;
1313         }
1314
1315         if (mid->ref_count == 1) {
1316                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid_index,
1317                                            mid->mid, true);
1318                 if (err) {
1319                         netdev_err(dev, "Unable to set MC SFD\n");
1320                         goto err_out;
1321                 }
1322         }
1323
1324         return 0;
1325
1326 err_out:
1327         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
1328         return err;
1329 }
1330
1331 static int mlxsw_sp_port_obj_add(struct net_device *dev,
1332                                  const struct switchdev_obj *obj,
1333                                  struct switchdev_trans *trans)
1334 {
1335         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1336         int err = 0;
1337
1338         switch (obj->id) {
1339         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1340                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
1341                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
1342                                               trans);
1343                 break;
1344         case SWITCHDEV_OBJ_ID_PORT_MDB:
1345                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
1346                                             SWITCHDEV_OBJ_PORT_MDB(obj),
1347                                             trans);
1348                 break;
1349         default:
1350                 err = -EOPNOTSUPP;
1351                 break;
1352         }
1353
1354         return err;
1355 }
1356
1357 static void
1358 mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port,
1359                               struct mlxsw_sp_bridge_port *bridge_port, u16 vid)
1360 {
1361         u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid;
1362         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1363
1364         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
1365         if (WARN_ON(!mlxsw_sp_port_vlan))
1366                 return;
1367
1368         mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
1369         mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid);
1370         mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
1371         mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
1372 }
1373
1374 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1375                                    const struct switchdev_obj_port_vlan *vlan)
1376 {
1377         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1378         struct net_device *orig_dev = vlan->obj.orig_dev;
1379         struct mlxsw_sp_bridge_port *bridge_port;
1380         u16 vid;
1381
1382         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
1383         if (WARN_ON(!bridge_port))
1384                 return -EINVAL;
1385
1386         if (!bridge_port->bridge_device->vlan_enabled)
1387                 return 0;
1388
1389         for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++)
1390                 mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid);
1391
1392         return 0;
1393 }
1394
1395 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1396                                  const struct switchdev_obj_port_mdb *mdb)
1397 {
1398         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1399         struct net_device *orig_dev = mdb->obj.orig_dev;
1400         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1401         struct mlxsw_sp_bridge_device *bridge_device;
1402         struct net_device *dev = mlxsw_sp_port->dev;
1403         struct mlxsw_sp_bridge_port *bridge_port;
1404         struct mlxsw_sp_mid *mid;
1405         u16 fid_index;
1406         u16 mid_idx;
1407         int err = 0;
1408
1409         bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
1410         if (!bridge_port)
1411                 return 0;
1412
1413         bridge_device = bridge_port->bridge_device;
1414         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
1415                                                                bridge_device,
1416                                                                mdb->vid);
1417         if (!mlxsw_sp_port_vlan)
1418                 return 0;
1419
1420         fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
1421
1422         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid_index);
1423         if (!mid) {
1424                 netdev_err(dev, "Unable to remove port from MC DB\n");
1425                 return -EINVAL;
1426         }
1427
1428         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1429         if (err)
1430                 netdev_err(dev, "Unable to remove port from SMID\n");
1431
1432         mid_idx = mid->mid;
1433         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1434                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid_index,
1435                                            mid_idx, false);
1436                 if (err)
1437                         netdev_err(dev, "Unable to remove MC SFD\n");
1438         }
1439
1440         return err;
1441 }
1442
1443 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1444                                  const struct switchdev_obj *obj)
1445 {
1446         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1447         int err = 0;
1448
1449         switch (obj->id) {
1450         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1451                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1452                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1453                 break;
1454         case SWITCHDEV_OBJ_ID_PORT_MDB:
1455                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1456                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1457                 break;
1458         default:
1459                 err = -EOPNOTSUPP;
1460                 break;
1461         }
1462
1463         return err;
1464 }
1465
1466 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1467                                                    u16 lag_id)
1468 {
1469         struct mlxsw_sp_port *mlxsw_sp_port;
1470         u64 max_lag_members;
1471         int i;
1472
1473         max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core,
1474                                              MAX_LAG_MEMBERS);
1475         for (i = 0; i < max_lag_members; i++) {
1476                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1477                 if (mlxsw_sp_port)
1478                         return mlxsw_sp_port;
1479         }
1480         return NULL;
1481 }
1482
1483 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1484         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1485         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1486         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1487         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1488 };
1489
1490 static int
1491 mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device,
1492                                 struct mlxsw_sp_bridge_port *bridge_port,
1493                                 struct mlxsw_sp_port *mlxsw_sp_port)
1494 {
1495         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1496
1497         if (is_vlan_dev(bridge_port->dev))
1498                 return -EINVAL;
1499
1500         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1);
1501         if (WARN_ON(!mlxsw_sp_port_vlan))
1502                 return -EINVAL;
1503
1504         /* Let VLAN-aware bridge take care of its own VLANs */
1505         mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
1506
1507         return 0;
1508 }
1509
1510 static void
1511 mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device,
1512                                  struct mlxsw_sp_bridge_port *bridge_port,
1513                                  struct mlxsw_sp_port *mlxsw_sp_port)
1514 {
1515         mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1);
1516         /* Make sure untagged frames are allowed to ingress */
1517         mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
1518 }
1519
1520 static struct mlxsw_sp_fid *
1521 mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device,
1522                               u16 vid)
1523 {
1524         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev);
1525
1526         return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid);
1527 }
1528
1529 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = {
1530         .port_join      = mlxsw_sp_bridge_8021q_port_join,
1531         .port_leave     = mlxsw_sp_bridge_8021q_port_leave,
1532         .fid_get        = mlxsw_sp_bridge_8021q_fid_get,
1533 };
1534
1535 static bool
1536 mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port,
1537                            const struct net_device *br_dev)
1538 {
1539         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1540
1541         list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list,
1542                             list) {
1543                 if (mlxsw_sp_port_vlan->bridge_port &&
1544                     mlxsw_sp_port_vlan->bridge_port->bridge_device->dev ==
1545                     br_dev)
1546                         return true;
1547         }
1548
1549         return false;
1550 }
1551
1552 static int
1553 mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device,
1554                                 struct mlxsw_sp_bridge_port *bridge_port,
1555                                 struct mlxsw_sp_port *mlxsw_sp_port)
1556 {
1557         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1558         u16 vid;
1559
1560         if (!is_vlan_dev(bridge_port->dev))
1561                 return -EINVAL;
1562         vid = vlan_dev_vlan_id(bridge_port->dev);
1563
1564         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
1565         if (WARN_ON(!mlxsw_sp_port_vlan))
1566                 return -EINVAL;
1567
1568         if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) {
1569                 netdev_err(mlxsw_sp_port->dev, "Can't bridge VLAN uppers of the same port\n");
1570                 return -EINVAL;
1571         }
1572
1573         /* Port is no longer usable as a router interface */
1574         if (mlxsw_sp_port_vlan->fid)
1575                 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
1576
1577         return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port);
1578 }
1579
1580 static void
1581 mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device,
1582                                  struct mlxsw_sp_bridge_port *bridge_port,
1583                                  struct mlxsw_sp_port *mlxsw_sp_port)
1584 {
1585         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1586         u16 vid = vlan_dev_vlan_id(bridge_port->dev);
1587
1588         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
1589         if (WARN_ON(!mlxsw_sp_port_vlan))
1590                 return;
1591
1592         mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
1593 }
1594
1595 static struct mlxsw_sp_fid *
1596 mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device,
1597                               u16 vid)
1598 {
1599         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev);
1600
1601         return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex);
1602 }
1603
1604 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = {
1605         .port_join      = mlxsw_sp_bridge_8021d_port_join,
1606         .port_leave     = mlxsw_sp_bridge_8021d_port_leave,
1607         .fid_get        = mlxsw_sp_bridge_8021d_fid_get,
1608 };
1609
1610 int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
1611                               struct net_device *brport_dev,
1612                               struct net_device *br_dev)
1613 {
1614         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1615         struct mlxsw_sp_bridge_device *bridge_device;
1616         struct mlxsw_sp_bridge_port *bridge_port;
1617         int err;
1618
1619         bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev);
1620         if (IS_ERR(bridge_port))
1621                 return PTR_ERR(bridge_port);
1622         bridge_device = bridge_port->bridge_device;
1623
1624         err = bridge_device->ops->port_join(bridge_device, bridge_port,
1625                                             mlxsw_sp_port);
1626         if (err)
1627                 goto err_port_join;
1628
1629         return 0;
1630
1631 err_port_join:
1632         mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port);
1633         return err;
1634 }
1635
1636 void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
1637                                 struct net_device *brport_dev,
1638                                 struct net_device *br_dev)
1639 {
1640         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1641         struct mlxsw_sp_bridge_device *bridge_device;
1642         struct mlxsw_sp_bridge_port *bridge_port;
1643
1644         bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev);
1645         if (!bridge_device)
1646                 return;
1647         bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev);
1648         if (!bridge_port)
1649                 return;
1650
1651         bridge_device->ops->port_leave(bridge_device, bridge_port,
1652                                        mlxsw_sp_port);
1653         mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port);
1654 }
1655
1656 static void
1657 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type,
1658                             const char *mac, u16 vid,
1659                             struct net_device *dev)
1660 {
1661         struct switchdev_notifier_fdb_info info;
1662
1663         info.addr = mac;
1664         info.vid = vid;
1665         call_switchdev_notifiers(type, dev, &info.info);
1666 }
1667
1668 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1669                                             char *sfn_pl, int rec_index,
1670                                             bool adding)
1671 {
1672         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1673         struct mlxsw_sp_bridge_device *bridge_device;
1674         struct mlxsw_sp_bridge_port *bridge_port;
1675         struct mlxsw_sp_port *mlxsw_sp_port;
1676         enum switchdev_notifier_type type;
1677         char mac[ETH_ALEN];
1678         u8 local_port;
1679         u16 vid, fid;
1680         bool do_notification = true;
1681         int err;
1682
1683         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1684         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1685         if (!mlxsw_sp_port) {
1686                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1687                 goto just_remove;
1688         }
1689
1690         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid);
1691         if (!mlxsw_sp_port_vlan) {
1692                 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n");
1693                 goto just_remove;
1694         }
1695
1696         bridge_port = mlxsw_sp_port_vlan->bridge_port;
1697         if (!bridge_port) {
1698                 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n");
1699                 goto just_remove;
1700         }
1701
1702         bridge_device = bridge_port->bridge_device;
1703         vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0;
1704
1705 do_fdb_op:
1706         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1707                                       adding, true);
1708         if (err) {
1709                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n");
1710                 return;
1711         }
1712
1713         if (!do_notification)
1714                 return;
1715         type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE;
1716         mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev);
1717
1718         return;
1719
1720 just_remove:
1721         adding = false;
1722         do_notification = false;
1723         goto do_fdb_op;
1724 }
1725
1726 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1727                                                 char *sfn_pl, int rec_index,
1728                                                 bool adding)
1729 {
1730         struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
1731         struct mlxsw_sp_bridge_device *bridge_device;
1732         struct mlxsw_sp_bridge_port *bridge_port;
1733         struct mlxsw_sp_port *mlxsw_sp_port;
1734         enum switchdev_notifier_type type;
1735         char mac[ETH_ALEN];
1736         u16 lag_vid = 0;
1737         u16 lag_id;
1738         u16 vid, fid;
1739         bool do_notification = true;
1740         int err;
1741
1742         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1743         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1744         if (!mlxsw_sp_port) {
1745                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1746                 goto just_remove;
1747         }
1748
1749         mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid);
1750         if (!mlxsw_sp_port_vlan) {
1751                 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n");
1752                 goto just_remove;
1753         }
1754
1755         bridge_port = mlxsw_sp_port_vlan->bridge_port;
1756         if (!bridge_port) {
1757                 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n");
1758                 goto just_remove;
1759         }
1760
1761         bridge_device = bridge_port->bridge_device;
1762         vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0;
1763         lag_vid = mlxsw_sp_port_vlan->vid;
1764
1765 do_fdb_op:
1766         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1767                                           adding, true);
1768         if (err) {
1769                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n");
1770                 return;
1771         }
1772
1773         if (!do_notification)
1774                 return;
1775         type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE;
1776         mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev);
1777
1778         return;
1779
1780 just_remove:
1781         adding = false;
1782         do_notification = false;
1783         goto do_fdb_op;
1784 }
1785
1786 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1787                                             char *sfn_pl, int rec_index)
1788 {
1789         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1790         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1791                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1792                                                 rec_index, true);
1793                 break;
1794         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1795                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1796                                                 rec_index, false);
1797                 break;
1798         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1799                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1800                                                     rec_index, true);
1801                 break;
1802         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1803                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1804                                                     rec_index, false);
1805                 break;
1806         }
1807 }
1808
1809 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1810 {
1811         struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge;
1812
1813         mlxsw_core_schedule_dw(&bridge->fdb_notify.dw,
1814                                msecs_to_jiffies(bridge->fdb_notify.interval));
1815 }
1816
1817 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1818 {
1819         struct mlxsw_sp_bridge *bridge;
1820         struct mlxsw_sp *mlxsw_sp;
1821         char *sfn_pl;
1822         u8 num_rec;
1823         int i;
1824         int err;
1825
1826         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1827         if (!sfn_pl)
1828                 return;
1829
1830         bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work);
1831         mlxsw_sp = bridge->mlxsw_sp;
1832
1833         rtnl_lock();
1834         mlxsw_reg_sfn_pack(sfn_pl);
1835         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1836         if (err) {
1837                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1838                 goto out;
1839         }
1840         num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1841         for (i = 0; i < num_rec; i++)
1842                 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1843
1844 out:
1845         rtnl_unlock();
1846         kfree(sfn_pl);
1847         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1848 }
1849
1850 struct mlxsw_sp_switchdev_event_work {
1851         struct work_struct work;
1852         struct switchdev_notifier_fdb_info fdb_info;
1853         struct net_device *dev;
1854         unsigned long event;
1855 };
1856
1857 static void mlxsw_sp_switchdev_event_work(struct work_struct *work)
1858 {
1859         struct mlxsw_sp_switchdev_event_work *switchdev_work =
1860                 container_of(work, struct mlxsw_sp_switchdev_event_work, work);
1861         struct net_device *dev = switchdev_work->dev;
1862         struct switchdev_notifier_fdb_info *fdb_info;
1863         struct mlxsw_sp_port *mlxsw_sp_port;
1864         int err;
1865
1866         rtnl_lock();
1867         mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
1868         if (!mlxsw_sp_port)
1869                 goto out;
1870
1871         switch (switchdev_work->event) {
1872         case SWITCHDEV_FDB_ADD_TO_DEVICE:
1873                 fdb_info = &switchdev_work->fdb_info;
1874                 err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true);
1875                 if (err)
1876                         break;
1877                 mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED,
1878                                             fdb_info->addr,
1879                                             fdb_info->vid, dev);
1880                 break;
1881         case SWITCHDEV_FDB_DEL_TO_DEVICE:
1882                 fdb_info = &switchdev_work->fdb_info;
1883                 mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false);
1884                 break;
1885         }
1886
1887 out:
1888         rtnl_unlock();
1889         kfree(switchdev_work->fdb_info.addr);
1890         kfree(switchdev_work);
1891         dev_put(dev);
1892 }
1893
1894 /* Called under rcu_read_lock() */
1895 static int mlxsw_sp_switchdev_event(struct notifier_block *unused,
1896                                     unsigned long event, void *ptr)
1897 {
1898         struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1899         struct mlxsw_sp_switchdev_event_work *switchdev_work;
1900         struct switchdev_notifier_fdb_info *fdb_info = ptr;
1901
1902         if (!mlxsw_sp_port_dev_lower_find_rcu(dev))
1903                 return NOTIFY_DONE;
1904
1905         switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
1906         if (!switchdev_work)
1907                 return NOTIFY_BAD;
1908
1909         INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work);
1910         switchdev_work->dev = dev;
1911         switchdev_work->event = event;
1912
1913         switch (event) {
1914         case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */
1915         case SWITCHDEV_FDB_DEL_TO_DEVICE:
1916                 memcpy(&switchdev_work->fdb_info, ptr,
1917                        sizeof(switchdev_work->fdb_info));
1918                 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
1919                 if (!switchdev_work->fdb_info.addr)
1920                         goto err_addr_alloc;
1921                 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
1922                                 fdb_info->addr);
1923                 /* Take a reference on the device. This can be either
1924                  * upper device containig mlxsw_sp_port or just a
1925                  * mlxsw_sp_port
1926                  */
1927                 dev_hold(dev);
1928                 break;
1929         default:
1930                 kfree(switchdev_work);
1931                 return NOTIFY_DONE;
1932         }
1933
1934         mlxsw_core_schedule_work(&switchdev_work->work);
1935
1936         return NOTIFY_DONE;
1937
1938 err_addr_alloc:
1939         kfree(switchdev_work);
1940         return NOTIFY_BAD;
1941 }
1942
1943 static struct notifier_block mlxsw_sp_switchdev_notifier = {
1944         .notifier_call = mlxsw_sp_switchdev_event,
1945 };
1946
1947 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1948 {
1949         struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge;
1950         int err;
1951
1952         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1953         if (err) {
1954                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1955                 return err;
1956         }
1957
1958         err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier);
1959         if (err) {
1960                 dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n");
1961                 return err;
1962         }
1963
1964         INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1965         bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1966         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1967         return 0;
1968 }
1969
1970 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1971 {
1972         cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw);
1973         unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier);
1974
1975 }
1976
1977 static void mlxsw_sp_mids_fini(struct mlxsw_sp *mlxsw_sp)
1978 {
1979         struct mlxsw_sp_mid *mid, *tmp;
1980
1981         list_for_each_entry_safe(mid, tmp, &mlxsw_sp->bridge->mids_list, list) {
1982                 list_del(&mid->list);
1983                 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap);
1984                 kfree(mid);
1985         }
1986 }
1987
1988 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1989 {
1990         struct mlxsw_sp_bridge *bridge;
1991
1992         bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL);
1993         if (!bridge)
1994                 return -ENOMEM;
1995         mlxsw_sp->bridge = bridge;
1996         bridge->mlxsw_sp = mlxsw_sp;
1997
1998         INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list);
1999         INIT_LIST_HEAD(&mlxsw_sp->bridge->mids_list);
2000
2001         bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops;
2002         bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops;
2003
2004         return mlxsw_sp_fdb_init(mlxsw_sp);
2005 }
2006
2007 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
2008 {
2009         mlxsw_sp_fdb_fini(mlxsw_sp);
2010         mlxsw_sp_mids_fini(mlxsw_sp);
2011         WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list));
2012         kfree(mlxsw_sp->bridge);
2013 }
2014
2015 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
2016 {
2017         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
2018 }
2019
2020 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
2021 {
2022 }