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 static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
  56                                         u16 vid)
  57 {
  58         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
  59         u16 fid = vid;
  60
  61         fid = f ? f->fid : fid;
  62
  63         if (!fid)
  64                 fid = mlxsw_sp_port->pvid;
  65
  66         return fid;
  67 }
  68
  69 static struct mlxsw_sp_port *
  70 mlxsw_sp_port_orig_get(struct net_device *dev,
  71                        struct mlxsw_sp_port *mlxsw_sp_port)
  72 {
  73         struct mlxsw_sp_port *mlxsw_sp_vport;
  74         u16 vid;
  75
  76         if (!is_vlan_dev(dev))
  77                 return mlxsw_sp_port;
  78
  79         vid = vlan_dev_vlan_id(dev);
  80         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
  81         WARN_ON(!mlxsw_sp_vport);
  82
  83         return mlxsw_sp_vport;
  84 }
  85
  86 static int mlxsw_sp_port_attr_get(struct net_device *dev,
  87                                   struct switchdev_attr *attr)
  88 {
  89         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
  90         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  91
  92         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
  93         if (!mlxsw_sp_port)
  94                 return -EINVAL;
  95
  96         switch (attr->id) {
  97         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
  98                 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
  99                 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
 100                        attr->u.ppid.id_len);
 101                 break;
 102         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 103                 attr->u.brport_flags =
 104                         (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
 105                         (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
 106                         (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
 107                 break;
 108         default:
 109                 return -EOPNOTSUPP;
 110         }
 111
 112         return 0;
 113 }
 114
 115 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 116                                        u8 state)
 117 {
 118         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 119         enum mlxsw_reg_spms_state spms_state;
 120         char *spms_pl;
 121         u16 vid;
 122         int err;
 123
 124         switch (state) {
 125         case BR_STATE_FORWARDING:
 126                 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
 127                 break;
 128         case BR_STATE_LEARNING:
 129                 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
 130                 break;
 131         case BR_STATE_LISTENING: /* fall-through */
 132         case BR_STATE_DISABLED: /* fall-through */
 133         case BR_STATE_BLOCKING:
 134                 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
 135                 break;
 136         default:
 137                 BUG();
 138         }
 139
 140         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 141         if (!spms_pl)
 142                 return -ENOMEM;
 143         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 144
 145         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 146                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 147                 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 148         } else {
 149                 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 150                         mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 151         }
 152
 153         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 154         kfree(spms_pl);
 155         return err;
 156 }
 157
 158 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 159                                             struct switchdev_trans *trans,
 160                                             u8 state)
 161 {
 162         if (switchdev_trans_ph_prepare(trans))
 163                 return 0;
 164
 165         mlxsw_sp_port->stp_state = state;
 166         return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
 167 }
 168
 169 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 170                                      u16 idx_begin, u16 idx_end, bool uc_set,
 171                                      bool bm_set)
 172 {
 173         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 174         u16 local_port = mlxsw_sp_port->local_port;
 175         enum mlxsw_flood_table_type table_type;
 176         u16 range = idx_end - idx_begin + 1;
 177         char *sftr_pl;
 178         int err;
 179
 180         if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 181                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
 182         else
 183                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
 184
 185         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 186         if (!sftr_pl)
 187                 return -ENOMEM;
 188
 189         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 190                             table_type, range, local_port, uc_set);
 191         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 192         if (err)
 193                 goto buffer_out;
 194
 195         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
 196                             table_type, range, local_port, bm_set);
 197         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 198         if (err)
 199                 goto err_flood_bm_set;
 200
 201         goto buffer_out;
 202
 203 err_flood_bm_set:
 204         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 205                             table_type, range, local_port, !uc_set);
 206         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 207 buffer_out:
 208         kfree(sftr_pl);
 209         return err;
 210 }
 211
 212 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 213                                       bool set)
 214 {
 215         struct net_device *dev = mlxsw_sp_port->dev;
 216         u16 vid, last_visited_vid;
 217         int err;
 218
 219         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 220                 u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 221                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 222
 223                 return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 224                                                   set, true);
 225         }
 226
 227         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 228                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 229                                                 true);
 230                 if (err) {
 231                         last_visited_vid = vid;
 232                         goto err_port_flood_set;
 233                 }
 234         }
 235
 236         return 0;
 237
 238 err_port_flood_set:
 239         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 240                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 241         netdev_err(dev, "Failed to configure unicast flooding\n");
 242         return err;
 243 }
 244
 245 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 246                              bool set)
 247 {
 248         u16 vfid;
 249
 250         /* In case of vFIDs, index into the flooding table is relative to
 251          * the start of the vFIDs range.
 252          */
 253         vfid = mlxsw_sp_fid_to_vfid(fid);
 254         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set, set);
 255 }
 256
 257 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 258                                            struct switchdev_trans *trans,
 259                                            unsigned long brport_flags)
 260 {
 261         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 262         bool set;
 263         int err;
 264
 265         if (!mlxsw_sp_port->bridged)
 266                 return -EINVAL;
 267
 268         if (switchdev_trans_ph_prepare(trans))
 269                 return 0;
 270
 271         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 272                 set = mlxsw_sp_port->uc_flood ? false : true;
 273                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
 274                 if (err)
 275                         return err;
 276         }
 277
 278         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 279         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 280         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 281
 282         return 0;
 283 }
 284
 285 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 286 {
 287         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 288         int err;
 289
 290         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 291         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 292         if (err)
 293                 return err;
 294         mlxsw_sp->ageing_time = ageing_time;
 295         return 0;
 296 }
 297
 298 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 299                                             struct switchdev_trans *trans,
 300                                             unsigned long ageing_clock_t)
 301 {
 302         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 303         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 304         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 305
 306         if (switchdev_trans_ph_prepare(trans)) {
 307                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 308                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 309                         return -ERANGE;
 310                 else
 311                         return 0;
 312         }
 313
 314         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 315 }
 316
 317 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 318                                           struct switchdev_trans *trans,
 319                                           struct net_device *orig_dev,
 320                                           bool vlan_enabled)
 321 {
 322         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 323
 324         /* SWITCHDEV_TRANS_PREPARE phase */
 325         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 326                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 327                 return -EINVAL;
 328         }
 329
 330         return 0;
 331 }
 332
 333 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 334                                   const struct switchdev_attr *attr,
 335                                   struct switchdev_trans *trans)
 336 {
 337         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 338         int err = 0;
 339
 340         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 341         if (!mlxsw_sp_port)
 342                 return -EINVAL;
 343
 344         switch (attr->id) {
 345         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 346                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 347                                                        attr->u.stp_state);
 348                 break;
 349         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 350                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 351                                                       attr->u.brport_flags);
 352                 break;
 353         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 354                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 355                                                        attr->u.ageing_time);
 356                 break;
 357         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 358                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 359                                                      attr->orig_dev,
 360                                                      attr->u.vlan_filtering);
 361                 break;
 362         default:
 363                 err = -EOPNOTSUPP;
 364                 break;
 365         }
 366
 367         return err;
 368 }
 369
 370 static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 371 {
 372         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 373
 374         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
 375         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 376 }
 377
 378 static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
 379 {
 380         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 381         char svfa_pl[MLXSW_REG_SVFA_LEN];
 382
 383         mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
 384         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 385 }
 386
 387 static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
 388 {
 389         struct mlxsw_sp_fid *f;
 390
 391         f = kzalloc(sizeof(*f), GFP_KERNEL);
 392         if (!f)
 393                 return NULL;
 394
 395         f->fid = fid;
 396
 397         return f;
 398 }
 399
 400 struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 401 {
 402         struct mlxsw_sp_fid *f;
 403         int err;
 404
 405         err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
 406         if (err)
 407                 return ERR_PTR(err);
 408
 409         /* Although all the ports member in the FID might be using a
 410          * {Port, VID} to FID mapping, we create a global VID-to-FID
 411          * mapping. This allows a port to transition to VLAN mode,
 412          * knowing the global mapping exists.
 413          */
 414         err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
 415         if (err)
 416                 goto err_fid_map;
 417
 418         f = mlxsw_sp_fid_alloc(fid);
 419         if (!f) {
 420                 err = -ENOMEM;
 421                 goto err_allocate_fid;
 422         }
 423
 424         list_add(&f->list, &mlxsw_sp->fids);
 425
 426         return f;
 427
 428 err_allocate_fid:
 429         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 430 err_fid_map:
 431         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 432         return ERR_PTR(err);
 433 }
 434
 435 void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f)
 436 {
 437         u16 fid = f->fid;
 438
 439         list_del(&f->list);
 440
 441         if (f->r)
 442                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
 443
 444         kfree(f);
 445
 446         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 447
 448         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 449 }
 450
 451 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 452                                     u16 fid)
 453 {
 454         struct mlxsw_sp_fid *f;
 455
 456         if (test_bit(fid, mlxsw_sp_port->active_vlans))
 457                 return 0;
 458
 459         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 460         if (!f) {
 461                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 462                 if (IS_ERR(f))
 463                         return PTR_ERR(f);
 464         }
 465
 466         f->ref_count++;
 467
 468         netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
 469
 470         return 0;
 471 }
 472
 473 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 474                                       u16 fid)
 475 {
 476         struct mlxsw_sp_fid *f;
 477
 478         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 479         if (WARN_ON(!f))
 480                 return;
 481
 482         netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
 483
 484         mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 485
 486         if (--f->ref_count == 0)
 487                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 488 }
 489
 490 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 491                                  bool valid)
 492 {
 493         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 494
 495         /* If port doesn't have vPorts, then it can use the global
 496          * VID-to-FID mapping.
 497          */
 498         if (list_empty(&mlxsw_sp_port->vports_list))
 499                 return 0;
 500
 501         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 502 }
 503
 504 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 505                                   u16 fid_begin, u16 fid_end)
 506 {
 507         int fid, err;
 508
 509         for (fid = fid_begin; fid <= fid_end; fid++) {
 510                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 511                 if (err)
 512                         goto err_port_fid_join;
 513         }
 514
 515         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 516                                         mlxsw_sp_port->uc_flood, true);
 517         if (err)
 518                 goto err_port_flood_set;
 519
 520         for (fid = fid_begin; fid <= fid_end; fid++) {
 521                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 522                 if (err)
 523                         goto err_port_fid_map;
 524         }
 525
 526         return 0;
 527
 528 err_port_fid_map:
 529         for (fid--; fid >= fid_begin; fid--)
 530                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 531         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 532                                   false);
 533 err_port_flood_set:
 534         fid = fid_end;
 535 err_port_fid_join:
 536         for (fid--; fid >= fid_begin; fid--)
 537                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 538         return err;
 539 }
 540
 541 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 542                                     u16 fid_begin, u16 fid_end)
 543 {
 544         int fid;
 545
 546         for (fid = fid_begin; fid <= fid_end; fid++)
 547                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 548
 549         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 550                                   false);
 551
 552         for (fid = fid_begin; fid <= fid_end; fid++)
 553                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 554 }
 555
 556 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 557                                     u16 vid)
 558 {
 559         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 560         char spvid_pl[MLXSW_REG_SPVID_LEN];
 561
 562         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 563         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 564 }
 565
 566 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 567                                             bool allow)
 568 {
 569         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 570         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 571
 572         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 573         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 574 }
 575
 576 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 577 {
 578         struct net_device *dev = mlxsw_sp_port->dev;
 579         int err;
 580
 581         if (!vid) {
 582                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 583                 if (err) {
 584                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 585                         return err;
 586                 }
 587         } else {
 588                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 589                 if (err) {
 590                         netdev_err(dev, "Failed to set PVID\n");
 591                         return err;
 592                 }
 593
 594                 /* Only allow if not already allowed. */
 595                 if (!mlxsw_sp_port->pvid) {
 596                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 597                                                                true);
 598                         if (err) {
 599                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 600                                 goto err_port_allow_untagged_set;
 601                         }
 602                 }
 603         }
 604
 605         mlxsw_sp_port->pvid = vid;
 606         return 0;
 607
 608 err_port_allow_untagged_set:
 609         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 610         return err;
 611 }
 612
 613 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 614                                      u16 vid_begin, u16 vid_end, bool is_member,
 615                                      bool untagged)
 616 {
 617         u16 vid, vid_e;
 618         int err;
 619
 620         for (vid = vid_begin; vid <= vid_end;
 621              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 622                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 623                             vid_end);
 624
 625                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 626                                              is_member, untagged);
 627                 if (err)
 628                         return err;
 629         }
 630
 631         return 0;
 632 }
 633
 634 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 635                                      u16 vid_begin, u16 vid_end,
 636                                      bool flag_untagged, bool flag_pvid)
 637 {
 638         struct net_device *dev = mlxsw_sp_port->dev;
 639         u16 vid, old_pvid;
 640         int err;
 641
 642         if (!mlxsw_sp_port->bridged)
 643                 return -EINVAL;
 644
 645         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 646         if (err) {
 647                 netdev_err(dev, "Failed to join FIDs\n");
 648                 return err;
 649         }
 650
 651         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 652                                         true, flag_untagged);
 653         if (err) {
 654                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 655                            vid_end);
 656                 goto err_port_vlans_set;
 657         }
 658
 659         old_pvid = mlxsw_sp_port->pvid;
 660         if (flag_pvid && old_pvid != vid_begin) {
 661                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 662                 if (err) {
 663                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 664                         goto err_port_pvid_set;
 665                 }
 666         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 667                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 668                 if (err) {
 669                         netdev_err(dev, "Unable to del PVID\n");
 670                         goto err_port_pvid_set;
 671                 }
 672         }
 673
 674         /* Changing activity bits only if HW operation succeded */
 675         for (vid = vid_begin; vid <= vid_end; vid++) {
 676                 set_bit(vid, mlxsw_sp_port->active_vlans);
 677                 if (flag_untagged)
 678                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 679                 else
 680                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 681         }
 682
 683         /* STP state change must be done after we set active VLANs */
 684         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 685                                           mlxsw_sp_port->stp_state);
 686         if (err) {
 687                 netdev_err(dev, "Failed to set STP state\n");
 688                 goto err_port_stp_state_set;
 689         }
 690
 691         return 0;
 692
 693 err_port_stp_state_set:
 694         for (vid = vid_begin; vid <= vid_end; vid++)
 695                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 696         if (old_pvid != mlxsw_sp_port->pvid)
 697                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 698 err_port_pvid_set:
 699         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 700                                   false);
 701 err_port_vlans_set:
 702         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 703         return err;
 704 }
 705
 706 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 707                                    const struct switchdev_obj_port_vlan *vlan,
 708                                    struct switchdev_trans *trans)
 709 {
 710         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 711         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 712
 713         if (switchdev_trans_ph_prepare(trans))
 714                 return 0;
 715
 716         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 717                                          vlan->vid_begin, vlan->vid_end,
 718                                          flag_untagged, flag_pvid);
 719 }
 720
 721 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 722 {
 723         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 724                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 725 }
 726
 727 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 728 {
 729         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 730                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 731 }
 732
 733 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 734                                      const char *mac, u16 fid, bool adding,
 735                                      enum mlxsw_reg_sfd_rec_action action,
 736                                      bool dynamic)
 737 {
 738         char *sfd_pl;
 739         int err;
 740
 741         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 742         if (!sfd_pl)
 743                 return -ENOMEM;
 744
 745         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 746         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 747                               mac, fid, action, local_port);
 748         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 749         kfree(sfd_pl);
 750
 751         return err;
 752 }
 753
 754 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 755                                    const char *mac, u16 fid, bool adding,
 756                                    bool dynamic)
 757 {
 758         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
 759                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
 760 }
 761
 762 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
 763                         bool adding)
 764 {
 765         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
 766                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
 767                                          false);
 768 }
 769
 770 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 771                                        const char *mac, u16 fid, u16 lag_vid,
 772                                        bool adding, bool dynamic)
 773 {
 774         char *sfd_pl;
 775         int err;
 776
 777         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 778         if (!sfd_pl)
 779                 return -ENOMEM;
 780
 781         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 782         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 783                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 784                                   lag_vid, lag_id);
 785         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 786         kfree(sfd_pl);
 787
 788         return err;
 789 }
 790
 791 static int
 792 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 793                              const struct switchdev_obj_port_fdb *fdb,
 794                              struct switchdev_trans *trans)
 795 {
 796         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 797         u16 lag_vid = 0;
 798
 799         if (switchdev_trans_ph_prepare(trans))
 800                 return 0;
 801
 802         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 803                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 804         }
 805
 806         if (!mlxsw_sp_port->lagged)
 807                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 808                                                mlxsw_sp_port->local_port,
 809                                                fdb->addr, fid, true, false);
 810         else
 811                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 812                                                    mlxsw_sp_port->lag_id,
 813                                                    fdb->addr, fid, lag_vid,
 814                                                    true, false);
 815 }
 816
 817 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 818                                 u16 fid, u16 mid, bool adding)
 819 {
 820         char *sfd_pl;
 821         int err;
 822
 823         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 824         if (!sfd_pl)
 825                 return -ENOMEM;
 826
 827         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 828         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 829                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 830         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 831         kfree(sfd_pl);
 832         return err;
 833 }
 834
 835 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 836                                   bool add, bool clear_all_ports)
 837 {
 838         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 839         char *smid_pl;
 840         int err, i;
 841
 842         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 843         if (!smid_pl)
 844                 return -ENOMEM;
 845
 846         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 847         if (clear_all_ports) {
 848                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 849                         if (mlxsw_sp->ports[i])
 850                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 851         }
 852         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 853         kfree(smid_pl);
 854         return err;
 855 }
 856
 857 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 858                                               const unsigned char *addr,
 859                                               u16 vid)
 860 {
 861         struct mlxsw_sp_mid *mid;
 862
 863         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 864                 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
 865                         return mid;
 866         }
 867         return NULL;
 868 }
 869
 870 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 871                                                 const unsigned char *addr,
 872                                                 u16 vid)
 873 {
 874         struct mlxsw_sp_mid *mid;
 875         u16 mid_idx;
 876
 877         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 878                                       MLXSW_SP_MID_MAX);
 879         if (mid_idx == MLXSW_SP_MID_MAX)
 880                 return NULL;
 881
 882         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 883         if (!mid)
 884                 return NULL;
 885
 886         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 887         ether_addr_copy(mid->addr, addr);
 888         mid->vid = vid;
 889         mid->mid = mid_idx;
 890         mid->ref_count = 0;
 891         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 892
 893         return mid;
 894 }
 895
 896 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 897                                  struct mlxsw_sp_mid *mid)
 898 {
 899         if (--mid->ref_count == 0) {
 900                 list_del(&mid->list);
 901                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 902                 kfree(mid);
 903                 return 1;
 904         }
 905         return 0;
 906 }
 907
 908 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 909                                  const struct switchdev_obj_port_mdb *mdb,
 910                                  struct switchdev_trans *trans)
 911 {
 912         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 913         struct net_device *dev = mlxsw_sp_port->dev;
 914         struct mlxsw_sp_mid *mid;
 915         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
 916         int err = 0;
 917
 918         if (switchdev_trans_ph_prepare(trans))
 919                 return 0;
 920
 921         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
 922         if (!mid) {
 923                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
 924                 if (!mid) {
 925                         netdev_err(dev, "Unable to allocate MC group\n");
 926                         return -ENOMEM;
 927                 }
 928         }
 929         mid->ref_count++;
 930
 931         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
 932                                      mid->ref_count == 1);
 933         if (err) {
 934                 netdev_err(dev, "Unable to set SMID\n");
 935                 goto err_out;
 936         }
 937
 938         if (mid->ref_count == 1) {
 939                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
 940                                            true);
 941                 if (err) {
 942                         netdev_err(dev, "Unable to set MC SFD\n");
 943                         goto err_out;
 944                 }
 945         }
 946
 947         return 0;
 948
 949 err_out:
 950         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
 951         return err;
 952 }
 953
 954 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 955                                  const struct switchdev_obj *obj,
 956                                  struct switchdev_trans *trans)
 957 {
 958         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 959         int err = 0;
 960
 961         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 962         if (!mlxsw_sp_port)
 963                 return -EINVAL;
 964
 965         switch (obj->id) {
 966         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 967                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 968                         return 0;
 969
 970                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 971                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 972                                               trans);
 973                 break;
 974         case SWITCHDEV_OBJ_ID_IPV4_FIB:
 975                 err = mlxsw_sp_router_fib4_add(mlxsw_sp_port,
 976                                                SWITCHDEV_OBJ_IPV4_FIB(obj),
 977                                                trans);
 978                 break;
 979         case SWITCHDEV_OBJ_ID_PORT_FDB:
 980                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 981                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 982                                                    trans);
 983                 break;
 984         case SWITCHDEV_OBJ_ID_PORT_MDB:
 985                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
 986                                             SWITCHDEV_OBJ_PORT_MDB(obj),
 987                                             trans);
 988                 break;
 989         default:
 990                 err = -EOPNOTSUPP;
 991                 break;
 992         }
 993
 994         return err;
 995 }
 996
 997 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 998                                      u16 vid_begin, u16 vid_end)
 999 {
1000         struct net_device *dev = mlxsw_sp_port->dev;
1001         u16 vid, pvid;
1002         int err;
1003
1004         if (!mlxsw_sp_port->bridged)
1005                 return -EINVAL;
1006
1007         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
1008                                         false, false);
1009         if (err) {
1010                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
1011                            vid_end);
1012                 return err;
1013         }
1014
1015         pvid = mlxsw_sp_port->pvid;
1016         if (pvid >= vid_begin && pvid <= vid_end) {
1017                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1018                 if (err) {
1019                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
1020                         return err;
1021                 }
1022         }
1023
1024         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1025
1026         /* Changing activity bits only if HW operation succeded */
1027         for (vid = vid_begin; vid <= vid_end; vid++)
1028                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1029
1030         return 0;
1031 }
1032
1033 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1034                                    const struct switchdev_obj_port_vlan *vlan)
1035 {
1036         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
1037                                          vlan->vid_end);
1038 }
1039
1040 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1041 {
1042         u16 vid;
1043
1044         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1045                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
1046 }
1047
1048 static int
1049 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1050                              const struct switchdev_obj_port_fdb *fdb)
1051 {
1052         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1053         u16 lag_vid = 0;
1054
1055         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1056                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1057         }
1058
1059         if (!mlxsw_sp_port->lagged)
1060                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1061                                                mlxsw_sp_port->local_port,
1062                                                fdb->addr, fid,
1063                                                false, false);
1064         else
1065                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1066                                                    mlxsw_sp_port->lag_id,
1067                                                    fdb->addr, fid, lag_vid,
1068                                                    false, false);
1069 }
1070
1071 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1072                                  const struct switchdev_obj_port_mdb *mdb)
1073 {
1074         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1075         struct net_device *dev = mlxsw_sp_port->dev;
1076         struct mlxsw_sp_mid *mid;
1077         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1078         u16 mid_idx;
1079         int err = 0;
1080
1081         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
1082         if (!mid) {
1083                 netdev_err(dev, "Unable to remove port from MC DB\n");
1084                 return -EINVAL;
1085         }
1086
1087         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1088         if (err)
1089                 netdev_err(dev, "Unable to remove port from SMID\n");
1090
1091         mid_idx = mid->mid;
1092         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1093                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1094                                            false);
1095                 if (err)
1096                         netdev_err(dev, "Unable to remove MC SFD\n");
1097         }
1098
1099         return err;
1100 }
1101
1102 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1103                                  const struct switchdev_obj *obj)
1104 {
1105         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1106         int err = 0;
1107
1108         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1109         if (!mlxsw_sp_port)
1110                 return -EINVAL;
1111
1112         switch (obj->id) {
1113         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1114                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1115                         return 0;
1116
1117                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1118                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1119                 break;
1120         case SWITCHDEV_OBJ_ID_IPV4_FIB:
1121                 err = mlxsw_sp_router_fib4_del(mlxsw_sp_port,
1122                                                SWITCHDEV_OBJ_IPV4_FIB(obj));
1123                 break;
1124         case SWITCHDEV_OBJ_ID_PORT_FDB:
1125                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1126                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1127                 break;
1128         case SWITCHDEV_OBJ_ID_PORT_MDB:
1129                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1130                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1131                 break;
1132         default:
1133                 err = -EOPNOTSUPP;
1134                 break;
1135         }
1136
1137         return err;
1138 }
1139
1140 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1141                                                    u16 lag_id)
1142 {
1143         struct mlxsw_sp_port *mlxsw_sp_port;
1144         int i;
1145
1146         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
1147                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1148                 if (mlxsw_sp_port)
1149                         return mlxsw_sp_port;
1150         }
1151         return NULL;
1152 }
1153
1154 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1155                                   struct switchdev_obj_port_fdb *fdb,
1156                                   switchdev_obj_dump_cb_t *cb,
1157                                   struct net_device *orig_dev)
1158 {
1159         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1160         struct mlxsw_sp_port *tmp;
1161         struct mlxsw_sp_fid *f;
1162         u16 vport_fid;
1163         char *sfd_pl;
1164         char mac[ETH_ALEN];
1165         u16 fid;
1166         u8 local_port;
1167         u16 lag_id;
1168         u8 num_rec;
1169         int stored_err = 0;
1170         int i;
1171         int err;
1172
1173         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1174         if (!sfd_pl)
1175                 return -ENOMEM;
1176
1177         f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1178         vport_fid = f ? f->fid : 0;
1179
1180         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1181         do {
1182                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1183                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1184                 if (err)
1185                         goto out;
1186
1187                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1188
1189                 /* Even in case of error, we have to run the dump to the end
1190                  * so the session in firmware is finished.
1191                  */
1192                 if (stored_err)
1193                         continue;
1194
1195                 for (i = 0; i < num_rec; i++) {
1196                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1197                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1198                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1199                                                         &local_port);
1200                                 if (local_port == mlxsw_sp_port->local_port) {
1201                                         if (vport_fid && vport_fid == fid)
1202                                                 fdb->vid = 0;
1203                                         else if (!vport_fid &&
1204                                                  !mlxsw_sp_fid_is_vfid(fid))
1205                                                 fdb->vid = fid;
1206                                         else
1207                                                 continue;
1208                                         ether_addr_copy(fdb->addr, mac);
1209                                         fdb->ndm_state = NUD_REACHABLE;
1210                                         err = cb(&fdb->obj);
1211                                         if (err)
1212                                                 stored_err = err;
1213                                 }
1214                                 break;
1215                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1216                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1217                                                             mac, &fid, &lag_id);
1218                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1219                                 if (tmp && tmp->local_port ==
1220                                     mlxsw_sp_port->local_port) {
1221                                         /* LAG records can only point to LAG
1222                                          * devices or VLAN devices on top.
1223                                          */
1224                                         if (!netif_is_lag_master(orig_dev) &&
1225                                             !is_vlan_dev(orig_dev))
1226                                                 continue;
1227                                         if (vport_fid && vport_fid == fid)
1228                                                 fdb->vid = 0;
1229                                         else if (!vport_fid &&
1230                                                  !mlxsw_sp_fid_is_vfid(fid))
1231                                                 fdb->vid = fid;
1232                                         else
1233                                                 continue;
1234                                         ether_addr_copy(fdb->addr, mac);
1235                                         fdb->ndm_state = NUD_REACHABLE;
1236                                         err = cb(&fdb->obj);
1237                                         if (err)
1238                                                 stored_err = err;
1239                                 }
1240                                 break;
1241                         }
1242                 }
1243         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1244
1245 out:
1246         kfree(sfd_pl);
1247         return stored_err ? stored_err : err;
1248 }
1249
1250 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1251                                    struct switchdev_obj_port_vlan *vlan,
1252                                    switchdev_obj_dump_cb_t *cb)
1253 {
1254         u16 vid;
1255         int err = 0;
1256
1257         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1258                 vlan->flags = 0;
1259                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1260                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1261                 return cb(&vlan->obj);
1262         }
1263
1264         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1265                 vlan->flags = 0;
1266                 if (vid == mlxsw_sp_port->pvid)
1267                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1268                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1269                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1270                 vlan->vid_begin = vid;
1271                 vlan->vid_end = vid;
1272                 err = cb(&vlan->obj);
1273                 if (err)
1274                         break;
1275         }
1276         return err;
1277 }
1278
1279 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1280                                   struct switchdev_obj *obj,
1281                                   switchdev_obj_dump_cb_t *cb)
1282 {
1283         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1284         int err = 0;
1285
1286         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1287         if (!mlxsw_sp_port)
1288                 return -EINVAL;
1289
1290         switch (obj->id) {
1291         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1292                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1293                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1294                 break;
1295         case SWITCHDEV_OBJ_ID_PORT_FDB:
1296                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1297                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1298                                              obj->orig_dev);
1299                 break;
1300         default:
1301                 err = -EOPNOTSUPP;
1302                 break;
1303         }
1304
1305         return err;
1306 }
1307
1308 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1309         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1310         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1311         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1312         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1313         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1314 };
1315
1316 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1317                                         char *mac, u16 vid,
1318                                         struct net_device *dev)
1319 {
1320         struct switchdev_notifier_fdb_info info;
1321         unsigned long notifier_type;
1322
1323         if (learning_sync) {
1324                 info.addr = mac;
1325                 info.vid = vid;
1326                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1327                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1328         }
1329 }
1330
1331 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1332                                             char *sfn_pl, int rec_index,
1333                                             bool adding)
1334 {
1335         struct mlxsw_sp_port *mlxsw_sp_port;
1336         char mac[ETH_ALEN];
1337         u8 local_port;
1338         u16 vid, fid;
1339         bool do_notification = true;
1340         int err;
1341
1342         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1343         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1344         if (!mlxsw_sp_port) {
1345                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1346                 goto just_remove;
1347         }
1348
1349         if (mlxsw_sp_fid_is_vfid(fid)) {
1350                 struct mlxsw_sp_port *mlxsw_sp_vport;
1351
1352                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1353                                                                  fid);
1354                 if (!mlxsw_sp_vport) {
1355                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1356                         goto just_remove;
1357                 }
1358                 vid = 0;
1359                 /* Override the physical port with the vPort. */
1360                 mlxsw_sp_port = mlxsw_sp_vport;
1361         } else {
1362                 vid = fid;
1363         }
1364
1365         adding = adding && mlxsw_sp_port->learning;
1366
1367 do_fdb_op:
1368         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1369                                       adding, true);
1370         if (err) {
1371                 if (net_ratelimit())
1372                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1373                 return;
1374         }
1375
1376         if (!do_notification)
1377                 return;
1378         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1379                                     adding, mac, vid, mlxsw_sp_port->dev);
1380         return;
1381
1382 just_remove:
1383         adding = false;
1384         do_notification = false;
1385         goto do_fdb_op;
1386 }
1387
1388 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1389                                                 char *sfn_pl, int rec_index,
1390                                                 bool adding)
1391 {
1392         struct mlxsw_sp_port *mlxsw_sp_port;
1393         struct net_device *dev;
1394         char mac[ETH_ALEN];
1395         u16 lag_vid = 0;
1396         u16 lag_id;
1397         u16 vid, fid;
1398         bool do_notification = true;
1399         int err;
1400
1401         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1402         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1403         if (!mlxsw_sp_port) {
1404                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1405                 goto just_remove;
1406         }
1407
1408         if (mlxsw_sp_fid_is_vfid(fid)) {
1409                 struct mlxsw_sp_port *mlxsw_sp_vport;
1410
1411                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1412                                                                  fid);
1413                 if (!mlxsw_sp_vport) {
1414                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1415                         goto just_remove;
1416                 }
1417
1418                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1419                 dev = mlxsw_sp_vport->dev;
1420                 vid = 0;
1421                 /* Override the physical port with the vPort. */
1422                 mlxsw_sp_port = mlxsw_sp_vport;
1423         } else {
1424                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1425                 vid = fid;
1426         }
1427
1428         adding = adding && mlxsw_sp_port->learning;
1429
1430 do_fdb_op:
1431         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1432                                           adding, true);
1433         if (err) {
1434                 if (net_ratelimit())
1435                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1436                 return;
1437         }
1438
1439         if (!do_notification)
1440                 return;
1441         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1442                                     vid, dev);
1443         return;
1444
1445 just_remove:
1446         adding = false;
1447         do_notification = false;
1448         goto do_fdb_op;
1449 }
1450
1451 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1452                                             char *sfn_pl, int rec_index)
1453 {
1454         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1455         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1456                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1457                                                 rec_index, true);
1458                 break;
1459         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1460                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1461                                                 rec_index, false);
1462                 break;
1463         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1464                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1465                                                     rec_index, true);
1466                 break;
1467         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1468                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1469                                                     rec_index, false);
1470                 break;
1471         }
1472 }
1473
1474 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1475 {
1476         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1477                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1478 }
1479
1480 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1481 {
1482         struct mlxsw_sp *mlxsw_sp;
1483         char *sfn_pl;
1484         u8 num_rec;
1485         int i;
1486         int err;
1487
1488         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1489         if (!sfn_pl)
1490                 return;
1491
1492         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1493
1494         rtnl_lock();
1495         do {
1496                 mlxsw_reg_sfn_pack(sfn_pl);
1497                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1498                 if (err) {
1499                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1500                         break;
1501                 }
1502                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1503                 for (i = 0; i < num_rec; i++)
1504                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1505
1506         } while (num_rec);
1507         rtnl_unlock();
1508
1509         kfree(sfn_pl);
1510         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1511 }
1512
1513 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1514 {
1515         int err;
1516
1517         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1518         if (err) {
1519                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1520                 return err;
1521         }
1522         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1523         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1524         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1525         return 0;
1526 }
1527
1528 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1529 {
1530         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1531 }
1532
1533 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1534 {
1535         return mlxsw_sp_fdb_init(mlxsw_sp);
1536 }
1537
1538 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1539 {
1540         mlxsw_sp_fdb_fini(mlxsw_sp);
1541 }
1542
1543 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1544 {
1545         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1546 }
1547
1548 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1549 {
1550 }