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 <net/switchdev.h>
  49
  50 #include "spectrum.h"
  51 #include "core.h"
  52 #include "reg.h"
  53
  54 static struct mlxsw_sp_port *
  55 mlxsw_sp_port_orig_get(struct net_device *dev,
  56                        struct mlxsw_sp_port *mlxsw_sp_port)
  57 {
  58         struct mlxsw_sp_port *mlxsw_sp_vport;
  59         u16 vid;
  60
  61         if (!is_vlan_dev(dev))
  62                 return mlxsw_sp_port;
  63
  64         vid = vlan_dev_vlan_id(dev);
  65         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
  66         WARN_ON(!mlxsw_sp_vport);
  67
  68         return mlxsw_sp_vport;
  69 }
  70
  71 static int mlxsw_sp_port_attr_get(struct net_device *dev,
  72                                   struct switchdev_attr *attr)
  73 {
  74         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
  75         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  76
  77         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
  78         if (!mlxsw_sp_port)
  79                 return -EINVAL;
  80
  81         switch (attr->id) {
  82         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
  83                 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
  84                 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
  85                        attr->u.ppid.id_len);
  86                 break;
  87         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
  88                 attr->u.brport_flags =
  89                         (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
  90                         (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
  91                         (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
  92                 break;
  93         default:
  94                 return -EOPNOTSUPP;
  95         }
  96
  97         return 0;
  98 }
  99
 100 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 101                                        u8 state)
 102 {
 103         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 104         enum mlxsw_reg_spms_state spms_state;
 105         char *spms_pl;
 106         u16 vid;
 107         int err;
 108
 109         switch (state) {
 110         case BR_STATE_DISABLED: /* fall-through */
 111         case BR_STATE_FORWARDING:
 112                 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
 113                 break;
 114         case BR_STATE_LISTENING: /* fall-through */
 115         case BR_STATE_LEARNING:
 116                 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
 117                 break;
 118         case BR_STATE_BLOCKING:
 119                 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
 120                 break;
 121         default:
 122                 BUG();
 123         }
 124
 125         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 126         if (!spms_pl)
 127                 return -ENOMEM;
 128         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 129
 130         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 131                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 132                 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 133         } else {
 134                 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 135                         mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 136         }
 137
 138         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 139         kfree(spms_pl);
 140         return err;
 141 }
 142
 143 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 144                                             struct switchdev_trans *trans,
 145                                             u8 state)
 146 {
 147         if (switchdev_trans_ph_prepare(trans))
 148                 return 0;
 149
 150         mlxsw_sp_port->stp_state = state;
 151         return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
 152 }
 153
 154 static bool mlxsw_sp_vfid_is_vport_br(u16 vfid)
 155 {
 156         return vfid >= MLXSW_SP_VFID_PORT_MAX;
 157 }
 158
 159 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 160                                      u16 idx_begin, u16 idx_end, bool set,
 161                                      bool only_uc)
 162 {
 163         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 164         u16 local_port = mlxsw_sp_port->local_port;
 165         enum mlxsw_flood_table_type table_type;
 166         u16 range = idx_end - idx_begin + 1;
 167         char *sftr_pl;
 168         int err;
 169
 170         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 171                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
 172                 if (mlxsw_sp_vfid_is_vport_br(idx_begin))
 173                         local_port = mlxsw_sp_port->local_port;
 174                 else
 175                         local_port = MLXSW_PORT_CPU_PORT;
 176         } else {
 177                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
 178         }
 179
 180         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 181         if (!sftr_pl)
 182                 return -ENOMEM;
 183
 184         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 185                             table_type, range, local_port, set);
 186         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 187         if (err)
 188                 goto buffer_out;
 189
 190         /* Flooding control allows one to decide whether a given port will
 191          * flood unicast traffic for which there is no FDB entry.
 192          */
 193         if (only_uc)
 194                 goto buffer_out;
 195
 196         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
 197                             table_type, range, local_port, set);
 198         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 199
 200 buffer_out:
 201         kfree(sftr_pl);
 202         return err;
 203 }
 204
 205 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 206                                       bool set)
 207 {
 208         struct net_device *dev = mlxsw_sp_port->dev;
 209         u16 vid, last_visited_vid;
 210         int err;
 211
 212         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 213                 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
 214
 215                 return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 216                                                   set, true);
 217         }
 218
 219         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 220                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 221                                                 true);
 222                 if (err) {
 223                         last_visited_vid = vid;
 224                         goto err_port_flood_set;
 225                 }
 226         }
 227
 228         return 0;
 229
 230 err_port_flood_set:
 231         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 232                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 233         netdev_err(dev, "Failed to configure unicast flooding\n");
 234         return err;
 235 }
 236
 237 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
 238                              bool set, bool only_uc)
 239 {
 240         /* In case of vFIDs, index into the flooding table is relative to
 241          * the start of the vFIDs range.
 242          */
 243         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
 244                                          only_uc);
 245 }
 246
 247 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 248                                            struct switchdev_trans *trans,
 249                                            unsigned long brport_flags)
 250 {
 251         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 252         bool set;
 253         int err;
 254
 255         if (!mlxsw_sp_port->bridged)
 256                 return -EINVAL;
 257
 258         if (switchdev_trans_ph_prepare(trans))
 259                 return 0;
 260
 261         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 262                 set = mlxsw_sp_port->uc_flood ? false : true;
 263                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
 264                 if (err)
 265                         return err;
 266         }
 267
 268         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 269         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 270         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 271
 272         return 0;
 273 }
 274
 275 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 276 {
 277         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 278         int err;
 279
 280         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 281         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 282         if (err)
 283                 return err;
 284         mlxsw_sp->ageing_time = ageing_time;
 285         return 0;
 286 }
 287
 288 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 289                                             struct switchdev_trans *trans,
 290                                             unsigned long ageing_clock_t)
 291 {
 292         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 293         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 294         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 295
 296         if (switchdev_trans_ph_prepare(trans))
 297                 return 0;
 298
 299         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 300 }
 301
 302 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 303                                           struct switchdev_trans *trans,
 304                                           struct net_device *orig_dev,
 305                                           bool vlan_enabled)
 306 {
 307         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 308
 309         /* SWITCHDEV_TRANS_PREPARE phase */
 310         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 311                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 312                 return -EINVAL;
 313         }
 314
 315         return 0;
 316 }
 317
 318 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 319                                   const struct switchdev_attr *attr,
 320                                   struct switchdev_trans *trans)
 321 {
 322         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 323         int err = 0;
 324
 325         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 326         if (!mlxsw_sp_port)
 327                 return -EINVAL;
 328
 329         switch (attr->id) {
 330         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 331                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 332                                                        attr->u.stp_state);
 333                 break;
 334         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 335                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 336                                                       attr->u.brport_flags);
 337                 break;
 338         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 339                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 340                                                        attr->u.ageing_time);
 341                 break;
 342         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 343                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 344                                                      attr->orig_dev,
 345                                                      attr->u.vlan_filtering);
 346                 break;
 347         default:
 348                 err = -EOPNOTSUPP;
 349                 break;
 350         }
 351
 352         return err;
 353 }
 354
 355 static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 356 {
 357         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 358         char spvid_pl[MLXSW_REG_SPVID_LEN];
 359
 360         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 361         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 362 }
 363
 364 static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 365 {
 366         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 367         int err;
 368
 369         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
 370         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 371
 372         if (err)
 373                 return err;
 374
 375         set_bit(fid, mlxsw_sp->active_fids);
 376         return 0;
 377 }
 378
 379 static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
 380 {
 381         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 382
 383         clear_bit(fid, mlxsw_sp->active_fids);
 384
 385         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
 386                             fid, fid);
 387         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 388 }
 389
 390 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
 391 {
 392         enum mlxsw_reg_svfa_mt mt;
 393
 394         if (!list_empty(&mlxsw_sp_port->vports_list))
 395                 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 396         else
 397                 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 398
 399         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
 400 }
 401
 402 static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
 403 {
 404         enum mlxsw_reg_svfa_mt mt;
 405
 406         if (list_empty(&mlxsw_sp_port->vports_list))
 407                 return 0;
 408
 409         mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 410         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
 411 }
 412
 413 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
 414                                   u16 vid_end)
 415 {
 416         u16 vid;
 417         int err;
 418
 419         for (vid = vid_begin; vid <= vid_end; vid++) {
 420                 err = mlxsw_sp_port_add_vid(dev, 0, vid);
 421                 if (err)
 422                         goto err_port_add_vid;
 423         }
 424         return 0;
 425
 426 err_port_add_vid:
 427         for (vid--; vid >= vid_begin; vid--)
 428                 mlxsw_sp_port_kill_vid(dev, 0, vid);
 429         return err;
 430 }
 431
 432 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 433                                      u16 vid_begin, u16 vid_end, bool is_member,
 434                                      bool untagged)
 435 {
 436         u16 vid, vid_e;
 437         int err;
 438
 439         for (vid = vid_begin; vid <= vid_end;
 440              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 441                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 442                             vid_end);
 443
 444                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 445                                              is_member, untagged);
 446                 if (err)
 447                         return err;
 448         }
 449
 450         return 0;
 451 }
 452
 453 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 454                                      u16 vid_begin, u16 vid_end,
 455                                      bool flag_untagged, bool flag_pvid)
 456 {
 457         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 458         struct net_device *dev = mlxsw_sp_port->dev;
 459         u16 vid, last_visited_vid, old_pvid;
 460         enum mlxsw_reg_svfa_mt mt;
 461         int err;
 462
 463         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 464          * not bridged, then packets ingressing through the port with
 465          * the specified VIDs will be directed to CPU.
 466          */
 467         if (!mlxsw_sp_port->bridged)
 468                 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
 469
 470         for (vid = vid_begin; vid <= vid_end; vid++) {
 471                 if (!test_bit(vid, mlxsw_sp->active_fids)) {
 472                         err = mlxsw_sp_fid_create(mlxsw_sp, vid);
 473                         if (err) {
 474                                 netdev_err(dev, "Failed to create FID=%d\n",
 475                                            vid);
 476                                 return err;
 477                         }
 478
 479                         /* When creating a FID, we set a VID to FID mapping
 480                          * regardless of the port's mode.
 481                          */
 482                         mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 483                         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
 484                                                            true, vid, vid);
 485                         if (err) {
 486                                 netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
 487                                            vid);
 488                                 goto err_port_vid_to_fid_set;
 489                         }
 490                 }
 491         }
 492
 493         /* Set FID mapping according to port's mode */
 494         for (vid = vid_begin; vid <= vid_end; vid++) {
 495                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
 496                 if (err) {
 497                         netdev_err(dev, "Failed to map FID=%d", vid);
 498                         last_visited_vid = --vid;
 499                         goto err_port_fid_map;
 500                 }
 501         }
 502
 503         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 504                                         true, false);
 505         if (err) {
 506                 netdev_err(dev, "Failed to configure flooding\n");
 507                 goto err_port_flood_set;
 508         }
 509
 510         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 511                                         true, flag_untagged);
 512         if (err) {
 513                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 514                            vid_end);
 515                 goto err_port_vlans_set;
 516         }
 517
 518         old_pvid = mlxsw_sp_port->pvid;
 519         if (flag_pvid && old_pvid != vid_begin) {
 520                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 521                 if (err) {
 522                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 523                         goto err_port_pvid_set;
 524                 }
 525                 mlxsw_sp_port->pvid = vid_begin;
 526         }
 527
 528         /* Changing activity bits only if HW operation succeded */
 529         for (vid = vid_begin; vid <= vid_end; vid++) {
 530                 set_bit(vid, mlxsw_sp_port->active_vlans);
 531                 if (flag_untagged)
 532                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 533                 else
 534                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 535         }
 536
 537         /* STP state change must be done after we set active VLANs */
 538         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 539                                           mlxsw_sp_port->stp_state);
 540         if (err) {
 541                 netdev_err(dev, "Failed to set STP state\n");
 542                 goto err_port_stp_state_set;
 543         }
 544
 545         return 0;
 546
 547 err_port_vid_to_fid_set:
 548         mlxsw_sp_fid_destroy(mlxsw_sp, vid);
 549         return err;
 550
 551 err_port_stp_state_set:
 552         for (vid = vid_begin; vid <= vid_end; vid++)
 553                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 554         if (old_pvid != mlxsw_sp_port->pvid)
 555                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 556 err_port_pvid_set:
 557         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 558                                   false);
 559 err_port_vlans_set:
 560         __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
 561                                   false);
 562 err_port_flood_set:
 563         last_visited_vid = vid_end;
 564 err_port_fid_map:
 565         for (vid = last_visited_vid; vid >= vid_begin; vid--)
 566                 mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 567         return err;
 568 }
 569
 570 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 571                                    const struct switchdev_obj_port_vlan *vlan,
 572                                    struct switchdev_trans *trans)
 573 {
 574         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 575         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 576
 577         if (switchdev_trans_ph_prepare(trans))
 578                 return 0;
 579
 580         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 581                                          vlan->vid_begin, vlan->vid_end,
 582                                          flag_untagged, flag_pvid);
 583 }
 584
 585 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 586 {
 587         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 588                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 589 }
 590
 591 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 592 {
 593         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 594                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 595 }
 596
 597 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 598                                    const char *mac, u16 fid, bool adding,
 599                                    bool dynamic)
 600 {
 601         char *sfd_pl;
 602         int err;
 603
 604         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 605         if (!sfd_pl)
 606                 return -ENOMEM;
 607
 608         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 609         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 610                               mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 611                               local_port);
 612         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 613         kfree(sfd_pl);
 614
 615         return err;
 616 }
 617
 618 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 619                                        const char *mac, u16 fid, u16 lag_vid,
 620                                        bool adding, bool dynamic)
 621 {
 622         char *sfd_pl;
 623         int err;
 624
 625         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 626         if (!sfd_pl)
 627                 return -ENOMEM;
 628
 629         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 630         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 631                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 632                                   lag_vid, lag_id);
 633         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 634         kfree(sfd_pl);
 635
 636         return err;
 637 }
 638
 639 static int
 640 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 641                              const struct switchdev_obj_port_fdb *fdb,
 642                              struct switchdev_trans *trans)
 643 {
 644         u16 fid = fdb->vid;
 645         u16 lag_vid = 0;
 646
 647         if (switchdev_trans_ph_prepare(trans))
 648                 return 0;
 649
 650         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 651                 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
 652
 653                 fid = mlxsw_sp_vfid_to_fid(vfid);
 654                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 655         }
 656
 657         if (!fid)
 658                 fid = mlxsw_sp_port->pvid;
 659
 660         if (!mlxsw_sp_port->lagged)
 661                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 662                                                mlxsw_sp_port->local_port,
 663                                                fdb->addr, fid, true, false);
 664         else
 665                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 666                                                    mlxsw_sp_port->lag_id,
 667                                                    fdb->addr, fid, lag_vid,
 668                                                    true, false);
 669 }
 670
 671 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 672                                  const struct switchdev_obj *obj,
 673                                  struct switchdev_trans *trans)
 674 {
 675         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 676         int err = 0;
 677
 678         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 679         if (!mlxsw_sp_port)
 680                 return -EINVAL;
 681
 682         switch (obj->id) {
 683         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 684                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 685                         return 0;
 686
 687                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 688                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 689                                               trans);
 690                 break;
 691         case SWITCHDEV_OBJ_ID_PORT_FDB:
 692                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 693                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 694                                                    trans);
 695                 break;
 696         default:
 697                 err = -EOPNOTSUPP;
 698                 break;
 699         }
 700
 701         return err;
 702 }
 703
 704 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
 705                                    u16 vid_end)
 706 {
 707         u16 vid;
 708         int err;
 709
 710         for (vid = vid_begin; vid <= vid_end; vid++) {
 711                 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
 712                 if (err)
 713                         return err;
 714         }
 715
 716         return 0;
 717 }
 718
 719 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 720                                      u16 vid_begin, u16 vid_end, bool init)
 721 {
 722         struct net_device *dev = mlxsw_sp_port->dev;
 723         u16 vid, pvid;
 724         int err;
 725
 726         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 727          * not bridged, then prevent packets ingressing through the
 728          * port with the specified VIDs from being trapped to CPU.
 729          */
 730         if (!init && !mlxsw_sp_port->bridged)
 731                 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
 732
 733         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 734                                         false, false);
 735         if (err) {
 736                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
 737                            vid_end);
 738                 return err;
 739         }
 740
 741         pvid = mlxsw_sp_port->pvid;
 742         if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
 743                 /* Default VLAN is always 1 */
 744                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
 745                 if (err) {
 746                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
 747                         return err;
 748                 }
 749                 mlxsw_sp_port->pvid = 1;
 750         }
 751
 752         if (init)
 753                 goto out;
 754
 755         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 756                                         false, false);
 757         if (err) {
 758                 netdev_err(dev, "Failed to clear flooding\n");
 759                 return err;
 760         }
 761
 762         for (vid = vid_begin; vid <= vid_end; vid++) {
 763                 /* Remove FID mapping in case of Virtual mode */
 764                 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 765                 if (err) {
 766                         netdev_err(dev, "Failed to unmap FID=%d", vid);
 767                         return err;
 768                 }
 769         }
 770
 771 out:
 772         /* Changing activity bits only if HW operation succeded */
 773         for (vid = vid_begin; vid <= vid_end; vid++)
 774                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 775
 776         return 0;
 777 }
 778
 779 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 780                                    const struct switchdev_obj_port_vlan *vlan)
 781 {
 782         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 783                                          vlan->vid_begin, vlan->vid_end, false);
 784 }
 785
 786 static int
 787 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
 788                              const struct switchdev_obj_port_fdb *fdb)
 789 {
 790         u16 fid = fdb->vid;
 791         u16 lag_vid = 0;
 792
 793         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 794                 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
 795
 796                 fid = mlxsw_sp_vfid_to_fid(vfid);
 797                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 798         }
 799
 800         if (!mlxsw_sp_port->lagged)
 801                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 802                                                mlxsw_sp_port->local_port,
 803                                                fdb->addr, fid,
 804                                                false, false);
 805         else
 806                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 807                                                    mlxsw_sp_port->lag_id,
 808                                                    fdb->addr, fid, lag_vid,
 809                                                    false, false);
 810 }
 811
 812 static int mlxsw_sp_port_obj_del(struct net_device *dev,
 813                                  const struct switchdev_obj *obj)
 814 {
 815         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 816         int err = 0;
 817
 818         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 819         if (!mlxsw_sp_port)
 820                 return -EINVAL;
 821
 822         switch (obj->id) {
 823         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 824                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 825                         return 0;
 826
 827                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 828                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
 829                 break;
 830         case SWITCHDEV_OBJ_ID_PORT_FDB:
 831                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
 832                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
 833                 break;
 834         default:
 835                 err = -EOPNOTSUPP;
 836                 break;
 837         }
 838
 839         return err;
 840 }
 841
 842 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
 843                                                    u16 lag_id)
 844 {
 845         struct mlxsw_sp_port *mlxsw_sp_port;
 846         int i;
 847
 848         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
 849                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
 850                 if (mlxsw_sp_port)
 851                         return mlxsw_sp_port;
 852         }
 853         return NULL;
 854 }
 855
 856 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 857                                   struct switchdev_obj_port_fdb *fdb,
 858                                   switchdev_obj_dump_cb_t *cb)
 859 {
 860         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 861         u16 vport_vid = 0, vport_fid = 0;
 862         char *sfd_pl;
 863         char mac[ETH_ALEN];
 864         u16 fid;
 865         u8 local_port;
 866         u16 lag_id;
 867         u8 num_rec;
 868         int stored_err = 0;
 869         int i;
 870         int err;
 871
 872         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 873         if (!sfd_pl)
 874                 return -ENOMEM;
 875
 876         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 877                 u16 tmp;
 878
 879                 tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
 880                 vport_fid = mlxsw_sp_vfid_to_fid(tmp);
 881                 vport_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 882         }
 883
 884         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 885         do {
 886                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
 887                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 888                 if (err)
 889                         goto out;
 890
 891                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
 892
 893                 /* Even in case of error, we have to run the dump to the end
 894                  * so the session in firmware is finished.
 895                  */
 896                 if (stored_err)
 897                         continue;
 898
 899                 for (i = 0; i < num_rec; i++) {
 900                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
 901                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
 902                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
 903                                                         &local_port);
 904                                 if (local_port == mlxsw_sp_port->local_port) {
 905                                         if (vport_fid && vport_fid != fid)
 906                                                 continue;
 907                                         else if (vport_fid)
 908                                                 fdb->vid = vport_vid;
 909                                         else
 910                                                 fdb->vid = fid;
 911                                         ether_addr_copy(fdb->addr, mac);
 912                                         fdb->ndm_state = NUD_REACHABLE;
 913                                         err = cb(&fdb->obj);
 914                                         if (err)
 915                                                 stored_err = err;
 916                                 }
 917                                 break;
 918                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
 919                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
 920                                                             mac, &fid, &lag_id);
 921                                 if (mlxsw_sp_port ==
 922                                     mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id)) {
 923                                         if (vport_fid && vport_fid != fid)
 924                                                 continue;
 925                                         else if (vport_fid)
 926                                                 fdb->vid = vport_vid;
 927                                         else
 928                                                 fdb->vid = fid;
 929                                         ether_addr_copy(fdb->addr, mac);
 930                                         fdb->ndm_state = NUD_REACHABLE;
 931                                         err = cb(&fdb->obj);
 932                                         if (err)
 933                                                 stored_err = err;
 934                                 }
 935                                 break;
 936                         }
 937                 }
 938         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
 939
 940 out:
 941         kfree(sfd_pl);
 942         return stored_err ? stored_err : err;
 943 }
 944
 945 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 946                                    struct switchdev_obj_port_vlan *vlan,
 947                                    switchdev_obj_dump_cb_t *cb)
 948 {
 949         u16 vid;
 950         int err = 0;
 951
 952         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 953                 vlan->flags = 0;
 954                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 955                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 956                 return cb(&vlan->obj);
 957         }
 958
 959         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 960                 vlan->flags = 0;
 961                 if (vid == mlxsw_sp_port->pvid)
 962                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
 963                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
 964                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
 965                 vlan->vid_begin = vid;
 966                 vlan->vid_end = vid;
 967                 err = cb(&vlan->obj);
 968                 if (err)
 969                         break;
 970         }
 971         return err;
 972 }
 973
 974 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
 975                                   struct switchdev_obj *obj,
 976                                   switchdev_obj_dump_cb_t *cb)
 977 {
 978         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 979         int err = 0;
 980
 981         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 982         if (!mlxsw_sp_port)
 983                 return -EINVAL;
 984
 985         switch (obj->id) {
 986         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 987                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
 988                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
 989                 break;
 990         case SWITCHDEV_OBJ_ID_PORT_FDB:
 991                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
 992                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb);
 993                 break;
 994         default:
 995                 err = -EOPNOTSUPP;
 996                 break;
 997         }
 998
 999         return err;
1000 }
1001
1002 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1003         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1004         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1005         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1006         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1007         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1008 };
1009
1010 static void mlxsw_sp_fdb_call_notifiers(bool learning, bool learning_sync,
1011                                         bool adding, char *mac, u16 vid,
1012                                         struct net_device *dev)
1013 {
1014         struct switchdev_notifier_fdb_info info;
1015         unsigned long notifier_type;
1016
1017         if (learning && learning_sync) {
1018                 info.addr = mac;
1019                 info.vid = vid;
1020                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1021                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1022         }
1023 }
1024
1025 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1026                                             char *sfn_pl, int rec_index,
1027                                             bool adding)
1028 {
1029         struct mlxsw_sp_port *mlxsw_sp_port;
1030         char mac[ETH_ALEN];
1031         u8 local_port;
1032         u16 vid, fid;
1033         bool do_notification = true;
1034         int err;
1035
1036         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1037         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1038         if (!mlxsw_sp_port) {
1039                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1040                 goto just_remove;
1041         }
1042
1043         if (mlxsw_sp_fid_is_vfid(fid)) {
1044                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
1045                 struct mlxsw_sp_port *mlxsw_sp_vport;
1046
1047                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
1048                                                                   vfid);
1049                 if (!mlxsw_sp_vport) {
1050                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1051                         goto just_remove;
1052                 }
1053                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1054                 /* Override the physical port with the vPort. */
1055                 mlxsw_sp_port = mlxsw_sp_vport;
1056         } else {
1057                 vid = fid;
1058         }
1059
1060         adding = adding && mlxsw_sp_port->learning;
1061
1062 do_fdb_op:
1063         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1064                                       adding, true);
1065         if (err) {
1066                 if (net_ratelimit())
1067                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1068                 return;
1069         }
1070
1071         if (!do_notification)
1072                 return;
1073         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning,
1074                                     mlxsw_sp_port->learning_sync,
1075                                     adding, mac, vid, mlxsw_sp_port->dev);
1076         return;
1077
1078 just_remove:
1079         adding = false;
1080         do_notification = false;
1081         goto do_fdb_op;
1082 }
1083
1084 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1085                                                 char *sfn_pl, int rec_index,
1086                                                 bool adding)
1087 {
1088         struct mlxsw_sp_port *mlxsw_sp_port;
1089         char mac[ETH_ALEN];
1090         u16 lag_vid = 0;
1091         u16 lag_id;
1092         u16 vid, fid;
1093         bool do_notification = true;
1094         int err;
1095
1096         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1097         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1098         if (!mlxsw_sp_port) {
1099                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1100                 goto just_remove;
1101         }
1102
1103         if (mlxsw_sp_fid_is_vfid(fid)) {
1104                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
1105                 struct mlxsw_sp_port *mlxsw_sp_vport;
1106
1107                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
1108                                                                   vfid);
1109                 if (!mlxsw_sp_vport) {
1110                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1111                         goto just_remove;
1112                 }
1113
1114                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1115                 lag_vid = vid;
1116                 /* Override the physical port with the vPort. */
1117                 mlxsw_sp_port = mlxsw_sp_vport;
1118         } else {
1119                 vid = fid;
1120         }
1121
1122         adding = adding && mlxsw_sp_port->learning;
1123
1124 do_fdb_op:
1125         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1126                                           adding, true);
1127         if (err) {
1128                 if (net_ratelimit())
1129                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1130                 return;
1131         }
1132
1133         if (!do_notification)
1134                 return;
1135         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning,
1136                                     mlxsw_sp_port->learning_sync,
1137                                     adding, mac, vid,
1138                                     mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev);
1139         return;
1140
1141 just_remove:
1142         adding = false;
1143         do_notification = false;
1144         goto do_fdb_op;
1145 }
1146
1147 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1148                                             char *sfn_pl, int rec_index)
1149 {
1150         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1151         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1152                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1153                                                 rec_index, true);
1154                 break;
1155         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1156                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1157                                                 rec_index, false);
1158                 break;
1159         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1160                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1161                                                     rec_index, true);
1162                 break;
1163         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1164                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1165                                                     rec_index, false);
1166                 break;
1167         }
1168 }
1169
1170 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1171 {
1172         schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
1173                               msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1174 }
1175
1176 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1177 {
1178         struct mlxsw_sp *mlxsw_sp;
1179         char *sfn_pl;
1180         u8 num_rec;
1181         int i;
1182         int err;
1183
1184         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1185         if (!sfn_pl)
1186                 return;
1187
1188         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1189
1190         do {
1191                 mlxsw_reg_sfn_pack(sfn_pl);
1192                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1193                 if (err) {
1194                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1195                         break;
1196                 }
1197                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1198                 for (i = 0; i < num_rec; i++)
1199                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1200
1201         } while (num_rec);
1202
1203         kfree(sfn_pl);
1204         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1205 }
1206
1207 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1208 {
1209         int err;
1210
1211         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1212         if (err) {
1213                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1214                 return err;
1215         }
1216         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1217         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1218         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1219         return 0;
1220 }
1221
1222 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1223 {
1224         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1225 }
1226
1227 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
1228 {
1229         u16 fid;
1230
1231         for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
1232                 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
1233 }
1234
1235 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1236 {
1237         return mlxsw_sp_fdb_init(mlxsw_sp);
1238 }
1239
1240 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1241 {
1242         mlxsw_sp_fdb_fini(mlxsw_sp);
1243         mlxsw_sp_fids_fini(mlxsw_sp);
1244 }
1245
1246 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
1247 {
1248         struct net_device *dev = mlxsw_sp_port->dev;
1249         int err;
1250
1251         /* Allow only untagged packets to ingress and tag them internally
1252          * with VID 1.
1253          */
1254         mlxsw_sp_port->pvid = 1;
1255         err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
1256                                         true);
1257         if (err) {
1258                 netdev_err(dev, "Unable to init VLANs\n");
1259                 return err;
1260         }
1261
1262         /* Add implicit VLAN interface in the device, so that untagged
1263          * packets will be classified to the default vFID.
1264          */
1265         err = mlxsw_sp_port_add_vid(dev, 0, 1);
1266         if (err)
1267                 netdev_err(dev, "Failed to configure default vFID\n");
1268
1269         return err;
1270 }
1271
1272 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1273 {
1274         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1275 }
1276
1277 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1278 {
1279 }