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 set,
 171                                      bool only_uc)
 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, set);
 191         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 192         if (err)
 193                 goto buffer_out;
 194
 195         /* Flooding control allows one to decide whether a given port will
 196          * flood unicast traffic for which there is no FDB entry.
 197          */
 198         if (only_uc)
 199                 goto buffer_out;
 200
 201         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
 202                             table_type, range, local_port, set);
 203         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 204         if (err)
 205                 goto err_flood_bm_set;
 206         else
 207                 goto buffer_out;
 208
 209 err_flood_bm_set:
 210         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 211                             table_type, range, local_port, !set);
 212         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 213 buffer_out:
 214         kfree(sftr_pl);
 215         return err;
 216 }
 217
 218 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 219                                       bool set)
 220 {
 221         struct net_device *dev = mlxsw_sp_port->dev;
 222         u16 vid, last_visited_vid;
 223         int err;
 224
 225         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 226                 u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 227                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 228
 229                 return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 230                                                   set, true);
 231         }
 232
 233         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 234                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 235                                                 true);
 236                 if (err) {
 237                         last_visited_vid = vid;
 238                         goto err_port_flood_set;
 239                 }
 240         }
 241
 242         return 0;
 243
 244 err_port_flood_set:
 245         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 246                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 247         netdev_err(dev, "Failed to configure unicast flooding\n");
 248         return err;
 249 }
 250
 251 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 252                              bool set)
 253 {
 254         u16 vfid;
 255
 256         /* In case of vFIDs, index into the flooding table is relative to
 257          * the start of the vFIDs range.
 258          */
 259         vfid = mlxsw_sp_fid_to_vfid(fid);
 260         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
 261                                          false);
 262 }
 263
 264 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 265                                            struct switchdev_trans *trans,
 266                                            unsigned long brport_flags)
 267 {
 268         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 269         bool set;
 270         int err;
 271
 272         if (!mlxsw_sp_port->bridged)
 273                 return -EINVAL;
 274
 275         if (switchdev_trans_ph_prepare(trans))
 276                 return 0;
 277
 278         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 279                 set = mlxsw_sp_port->uc_flood ? false : true;
 280                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
 281                 if (err)
 282                         return err;
 283         }
 284
 285         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 286         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 287         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 288
 289         return 0;
 290 }
 291
 292 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 293 {
 294         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 295         int err;
 296
 297         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 298         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 299         if (err)
 300                 return err;
 301         mlxsw_sp->ageing_time = ageing_time;
 302         return 0;
 303 }
 304
 305 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 306                                             struct switchdev_trans *trans,
 307                                             unsigned long ageing_clock_t)
 308 {
 309         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 310         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 311         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 312
 313         if (switchdev_trans_ph_prepare(trans)) {
 314                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 315                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 316                         return -ERANGE;
 317                 else
 318                         return 0;
 319         }
 320
 321         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 322 }
 323
 324 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 325                                           struct switchdev_trans *trans,
 326                                           struct net_device *orig_dev,
 327                                           bool vlan_enabled)
 328 {
 329         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 330
 331         /* SWITCHDEV_TRANS_PREPARE phase */
 332         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 333                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 334                 return -EINVAL;
 335         }
 336
 337         return 0;
 338 }
 339
 340 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 341                                   const struct switchdev_attr *attr,
 342                                   struct switchdev_trans *trans)
 343 {
 344         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 345         int err = 0;
 346
 347         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 348         if (!mlxsw_sp_port)
 349                 return -EINVAL;
 350
 351         switch (attr->id) {
 352         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 353                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 354                                                        attr->u.stp_state);
 355                 break;
 356         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 357                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 358                                                       attr->u.brport_flags);
 359                 break;
 360         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 361                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 362                                                        attr->u.ageing_time);
 363                 break;
 364         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 365                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 366                                                      attr->orig_dev,
 367                                                      attr->u.vlan_filtering);
 368                 break;
 369         default:
 370                 err = -EOPNOTSUPP;
 371                 break;
 372         }
 373
 374         return err;
 375 }
 376
 377 static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 378 {
 379         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 380
 381         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
 382         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 383 }
 384
 385 static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
 386 {
 387         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 388         char svfa_pl[MLXSW_REG_SVFA_LEN];
 389
 390         mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
 391         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 392 }
 393
 394 static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
 395 {
 396         struct mlxsw_sp_fid *f;
 397
 398         f = kzalloc(sizeof(*f), GFP_KERNEL);
 399         if (!f)
 400                 return NULL;
 401
 402         f->fid = fid;
 403
 404         return f;
 405 }
 406
 407 struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 408 {
 409         struct mlxsw_sp_fid *f;
 410         int err;
 411
 412         err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
 413         if (err)
 414                 return ERR_PTR(err);
 415
 416         /* Although all the ports member in the FID might be using a
 417          * {Port, VID} to FID mapping, we create a global VID-to-FID
 418          * mapping. This allows a port to transition to VLAN mode,
 419          * knowing the global mapping exists.
 420          */
 421         err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
 422         if (err)
 423                 goto err_fid_map;
 424
 425         f = mlxsw_sp_fid_alloc(fid);
 426         if (!f) {
 427                 err = -ENOMEM;
 428                 goto err_allocate_fid;
 429         }
 430
 431         list_add(&f->list, &mlxsw_sp->fids);
 432
 433         return f;
 434
 435 err_allocate_fid:
 436         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 437 err_fid_map:
 438         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 439         return ERR_PTR(err);
 440 }
 441
 442 void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f)
 443 {
 444         u16 fid = f->fid;
 445
 446         list_del(&f->list);
 447
 448         if (f->r)
 449                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
 450
 451         kfree(f);
 452
 453         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 454
 455         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 456 }
 457
 458 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 459                                     u16 fid)
 460 {
 461         struct mlxsw_sp_fid *f;
 462
 463         if (test_bit(fid, mlxsw_sp_port->active_vlans))
 464                 return 0;
 465
 466         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 467         if (!f) {
 468                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 469                 if (IS_ERR(f))
 470                         return PTR_ERR(f);
 471         }
 472
 473         f->ref_count++;
 474
 475         netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
 476
 477         return 0;
 478 }
 479
 480 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 481                                       u16 fid)
 482 {
 483         struct mlxsw_sp_fid *f;
 484
 485         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 486         if (WARN_ON(!f))
 487                 return;
 488
 489         netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
 490
 491         mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 492
 493         if (--f->ref_count == 0)
 494                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 495 }
 496
 497 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 498                                  bool valid)
 499 {
 500         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 501
 502         /* If port doesn't have vPorts, then it can use the global
 503          * VID-to-FID mapping.
 504          */
 505         if (list_empty(&mlxsw_sp_port->vports_list))
 506                 return 0;
 507
 508         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 509 }
 510
 511 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 512                                   u16 fid_begin, u16 fid_end)
 513 {
 514         int fid, err;
 515
 516         for (fid = fid_begin; fid <= fid_end; fid++) {
 517                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 518                 if (err)
 519                         goto err_port_fid_join;
 520         }
 521
 522         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 523                                         true, false);
 524         if (err)
 525                 goto err_port_flood_set;
 526
 527         for (fid = fid_begin; fid <= fid_end; fid++) {
 528                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 529                 if (err)
 530                         goto err_port_fid_map;
 531         }
 532
 533         return 0;
 534
 535 err_port_fid_map:
 536         for (fid--; fid >= fid_begin; fid--)
 537                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 538         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 539                                   false);
 540 err_port_flood_set:
 541         fid = fid_end;
 542 err_port_fid_join:
 543         for (fid--; fid >= fid_begin; fid--)
 544                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 545         return err;
 546 }
 547
 548 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 549                                     u16 fid_begin, u16 fid_end)
 550 {
 551         int fid;
 552
 553         for (fid = fid_begin; fid <= fid_end; fid++)
 554                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 555
 556         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 557                                   false);
 558
 559         for (fid = fid_begin; fid <= fid_end; fid++)
 560                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 561 }
 562
 563 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 564                                     u16 vid)
 565 {
 566         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 567         char spvid_pl[MLXSW_REG_SPVID_LEN];
 568
 569         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 570         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 571 }
 572
 573 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 574                                             bool allow)
 575 {
 576         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 577         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 578
 579         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 580         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 581 }
 582
 583 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 584 {
 585         struct net_device *dev = mlxsw_sp_port->dev;
 586         int err;
 587
 588         if (!vid) {
 589                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 590                 if (err) {
 591                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 592                         return err;
 593                 }
 594         } else {
 595                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 596                 if (err) {
 597                         netdev_err(dev, "Failed to set PVID\n");
 598                         return err;
 599                 }
 600
 601                 /* Only allow if not already allowed. */
 602                 if (!mlxsw_sp_port->pvid) {
 603                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 604                                                                true);
 605                         if (err) {
 606                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 607                                 goto err_port_allow_untagged_set;
 608                         }
 609                 }
 610         }
 611
 612         mlxsw_sp_port->pvid = vid;
 613         return 0;
 614
 615 err_port_allow_untagged_set:
 616         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 617         return err;
 618 }
 619
 620 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 621                                      u16 vid_begin, u16 vid_end, bool is_member,
 622                                      bool untagged)
 623 {
 624         u16 vid, vid_e;
 625         int err;
 626
 627         for (vid = vid_begin; vid <= vid_end;
 628              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 629                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 630                             vid_end);
 631
 632                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 633                                              is_member, untagged);
 634                 if (err)
 635                         return err;
 636         }
 637
 638         return 0;
 639 }
 640
 641 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 642                                      u16 vid_begin, u16 vid_end,
 643                                      bool flag_untagged, bool flag_pvid)
 644 {
 645         struct net_device *dev = mlxsw_sp_port->dev;
 646         u16 vid, old_pvid;
 647         int err;
 648
 649         if (!mlxsw_sp_port->bridged)
 650                 return -EINVAL;
 651
 652         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 653         if (err) {
 654                 netdev_err(dev, "Failed to join FIDs\n");
 655                 return err;
 656         }
 657
 658         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 659                                         true, flag_untagged);
 660         if (err) {
 661                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 662                            vid_end);
 663                 goto err_port_vlans_set;
 664         }
 665
 666         old_pvid = mlxsw_sp_port->pvid;
 667         if (flag_pvid && old_pvid != vid_begin) {
 668                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 669                 if (err) {
 670                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 671                         goto err_port_pvid_set;
 672                 }
 673         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 674                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 675                 if (err) {
 676                         netdev_err(dev, "Unable to del PVID\n");
 677                         goto err_port_pvid_set;
 678                 }
 679         }
 680
 681         /* Changing activity bits only if HW operation succeded */
 682         for (vid = vid_begin; vid <= vid_end; vid++) {
 683                 set_bit(vid, mlxsw_sp_port->active_vlans);
 684                 if (flag_untagged)
 685                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 686                 else
 687                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 688         }
 689
 690         /* STP state change must be done after we set active VLANs */
 691         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 692                                           mlxsw_sp_port->stp_state);
 693         if (err) {
 694                 netdev_err(dev, "Failed to set STP state\n");
 695                 goto err_port_stp_state_set;
 696         }
 697
 698         return 0;
 699
 700 err_port_stp_state_set:
 701         for (vid = vid_begin; vid <= vid_end; vid++)
 702                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 703         if (old_pvid != mlxsw_sp_port->pvid)
 704                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 705 err_port_pvid_set:
 706         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 707                                   false);
 708 err_port_vlans_set:
 709         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 710         return err;
 711 }
 712
 713 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 714                                    const struct switchdev_obj_port_vlan *vlan,
 715                                    struct switchdev_trans *trans)
 716 {
 717         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 718         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 719
 720         if (switchdev_trans_ph_prepare(trans))
 721                 return 0;
 722
 723         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 724                                          vlan->vid_begin, vlan->vid_end,
 725                                          flag_untagged, flag_pvid);
 726 }
 727
 728 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 729 {
 730         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 731                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 732 }
 733
 734 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 735 {
 736         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 737                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 738 }
 739
 740 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 741                                      const char *mac, u16 fid, bool adding,
 742                                      enum mlxsw_reg_sfd_rec_action action,
 743                                      bool dynamic)
 744 {
 745         char *sfd_pl;
 746         int err;
 747
 748         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 749         if (!sfd_pl)
 750                 return -ENOMEM;
 751
 752         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 753         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 754                               mac, fid, action, local_port);
 755         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 756         kfree(sfd_pl);
 757
 758         return err;
 759 }
 760
 761 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 762                                    const char *mac, u16 fid, bool adding,
 763                                    bool dynamic)
 764 {
 765         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
 766                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
 767 }
 768
 769 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
 770                         bool adding)
 771 {
 772         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
 773                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
 774                                          false);
 775 }
 776
 777 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 778                                        const char *mac, u16 fid, u16 lag_vid,
 779                                        bool adding, bool dynamic)
 780 {
 781         char *sfd_pl;
 782         int err;
 783
 784         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 785         if (!sfd_pl)
 786                 return -ENOMEM;
 787
 788         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 789         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 790                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 791                                   lag_vid, lag_id);
 792         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 793         kfree(sfd_pl);
 794
 795         return err;
 796 }
 797
 798 static int
 799 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 800                              const struct switchdev_obj_port_fdb *fdb,
 801                              struct switchdev_trans *trans)
 802 {
 803         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 804         u16 lag_vid = 0;
 805
 806         if (switchdev_trans_ph_prepare(trans))
 807                 return 0;
 808
 809         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 810                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 811         }
 812
 813         if (!mlxsw_sp_port->lagged)
 814                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 815                                                mlxsw_sp_port->local_port,
 816                                                fdb->addr, fid, true, false);
 817         else
 818                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 819                                                    mlxsw_sp_port->lag_id,
 820                                                    fdb->addr, fid, lag_vid,
 821                                                    true, false);
 822 }
 823
 824 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 825                                 u16 fid, u16 mid, bool adding)
 826 {
 827         char *sfd_pl;
 828         int err;
 829
 830         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 831         if (!sfd_pl)
 832                 return -ENOMEM;
 833
 834         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 835         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 836                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 837         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 838         kfree(sfd_pl);
 839         return err;
 840 }
 841
 842 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 843                                   bool add, bool clear_all_ports)
 844 {
 845         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 846         char *smid_pl;
 847         int err, i;
 848
 849         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 850         if (!smid_pl)
 851                 return -ENOMEM;
 852
 853         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 854         if (clear_all_ports) {
 855                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 856                         if (mlxsw_sp->ports[i])
 857                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 858         }
 859         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 860         kfree(smid_pl);
 861         return err;
 862 }
 863
 864 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 865                                               const unsigned char *addr,
 866                                               u16 vid)
 867 {
 868         struct mlxsw_sp_mid *mid;
 869
 870         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 871                 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
 872                         return mid;
 873         }
 874         return NULL;
 875 }
 876
 877 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 878                                                 const unsigned char *addr,
 879                                                 u16 vid)
 880 {
 881         struct mlxsw_sp_mid *mid;
 882         u16 mid_idx;
 883
 884         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 885                                       MLXSW_SP_MID_MAX);
 886         if (mid_idx == MLXSW_SP_MID_MAX)
 887                 return NULL;
 888
 889         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 890         if (!mid)
 891                 return NULL;
 892
 893         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 894         ether_addr_copy(mid->addr, addr);
 895         mid->vid = vid;
 896         mid->mid = mid_idx;
 897         mid->ref_count = 0;
 898         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 899
 900         return mid;
 901 }
 902
 903 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 904                                  struct mlxsw_sp_mid *mid)
 905 {
 906         if (--mid->ref_count == 0) {
 907                 list_del(&mid->list);
 908                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 909                 kfree(mid);
 910                 return 1;
 911         }
 912         return 0;
 913 }
 914
 915 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 916                                  const struct switchdev_obj_port_mdb *mdb,
 917                                  struct switchdev_trans *trans)
 918 {
 919         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 920         struct net_device *dev = mlxsw_sp_port->dev;
 921         struct mlxsw_sp_mid *mid;
 922         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
 923         int err = 0;
 924
 925         if (switchdev_trans_ph_prepare(trans))
 926                 return 0;
 927
 928         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
 929         if (!mid) {
 930                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
 931                 if (!mid) {
 932                         netdev_err(dev, "Unable to allocate MC group\n");
 933                         return -ENOMEM;
 934                 }
 935         }
 936         mid->ref_count++;
 937
 938         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
 939                                      mid->ref_count == 1);
 940         if (err) {
 941                 netdev_err(dev, "Unable to set SMID\n");
 942                 goto err_out;
 943         }
 944
 945         if (mid->ref_count == 1) {
 946                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
 947                                            true);
 948                 if (err) {
 949                         netdev_err(dev, "Unable to set MC SFD\n");
 950                         goto err_out;
 951                 }
 952         }
 953
 954         return 0;
 955
 956 err_out:
 957         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
 958         return err;
 959 }
 960
 961 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 962                                  const struct switchdev_obj *obj,
 963                                  struct switchdev_trans *trans)
 964 {
 965         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 966         int err = 0;
 967
 968         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 969         if (!mlxsw_sp_port)
 970                 return -EINVAL;
 971
 972         switch (obj->id) {
 973         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 974                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 975                         return 0;
 976
 977                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 978                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 979                                               trans);
 980                 break;
 981         case SWITCHDEV_OBJ_ID_IPV4_FIB:
 982                 err = mlxsw_sp_router_fib4_add(mlxsw_sp_port,
 983                                                SWITCHDEV_OBJ_IPV4_FIB(obj),
 984                                                trans);
 985                 break;
 986         case SWITCHDEV_OBJ_ID_PORT_FDB:
 987                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 988                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 989                                                    trans);
 990                 break;
 991         case SWITCHDEV_OBJ_ID_PORT_MDB:
 992                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
 993                                             SWITCHDEV_OBJ_PORT_MDB(obj),
 994                                             trans);
 995                 break;
 996         default:
 997                 err = -EOPNOTSUPP;
 998                 break;
 999         }
1000
1001         return err;
1002 }
1003
1004 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1005                                      u16 vid_begin, u16 vid_end)
1006 {
1007         struct net_device *dev = mlxsw_sp_port->dev;
1008         u16 vid, pvid;
1009         int err;
1010
1011         if (!mlxsw_sp_port->bridged)
1012                 return -EINVAL;
1013
1014         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
1015                                         false, false);
1016         if (err) {
1017                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
1018                            vid_end);
1019                 return err;
1020         }
1021
1022         pvid = mlxsw_sp_port->pvid;
1023         if (pvid >= vid_begin && pvid <= vid_end) {
1024                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1025                 if (err) {
1026                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
1027                         return err;
1028                 }
1029         }
1030
1031         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1032
1033         /* Changing activity bits only if HW operation succeded */
1034         for (vid = vid_begin; vid <= vid_end; vid++)
1035                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1036
1037         return 0;
1038 }
1039
1040 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1041                                    const struct switchdev_obj_port_vlan *vlan)
1042 {
1043         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
1044                                          vlan->vid_end);
1045 }
1046
1047 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1048 {
1049         u16 vid;
1050
1051         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1052                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
1053 }
1054
1055 static int
1056 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1057                              const struct switchdev_obj_port_fdb *fdb)
1058 {
1059         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1060         u16 lag_vid = 0;
1061
1062         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1063                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1064         }
1065
1066         if (!mlxsw_sp_port->lagged)
1067                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1068                                                mlxsw_sp_port->local_port,
1069                                                fdb->addr, fid,
1070                                                false, false);
1071         else
1072                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1073                                                    mlxsw_sp_port->lag_id,
1074                                                    fdb->addr, fid, lag_vid,
1075                                                    false, false);
1076 }
1077
1078 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1079                                  const struct switchdev_obj_port_mdb *mdb)
1080 {
1081         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1082         struct net_device *dev = mlxsw_sp_port->dev;
1083         struct mlxsw_sp_mid *mid;
1084         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1085         u16 mid_idx;
1086         int err = 0;
1087
1088         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
1089         if (!mid) {
1090                 netdev_err(dev, "Unable to remove port from MC DB\n");
1091                 return -EINVAL;
1092         }
1093
1094         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1095         if (err)
1096                 netdev_err(dev, "Unable to remove port from SMID\n");
1097
1098         mid_idx = mid->mid;
1099         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1100                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1101                                            false);
1102                 if (err)
1103                         netdev_err(dev, "Unable to remove MC SFD\n");
1104         }
1105
1106         return err;
1107 }
1108
1109 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1110                                  const struct switchdev_obj *obj)
1111 {
1112         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1113         int err = 0;
1114
1115         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1116         if (!mlxsw_sp_port)
1117                 return -EINVAL;
1118
1119         switch (obj->id) {
1120         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1121                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1122                         return 0;
1123
1124                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1125                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1126                 break;
1127         case SWITCHDEV_OBJ_ID_IPV4_FIB:
1128                 err = mlxsw_sp_router_fib4_del(mlxsw_sp_port,
1129                                                SWITCHDEV_OBJ_IPV4_FIB(obj));
1130                 break;
1131         case SWITCHDEV_OBJ_ID_PORT_FDB:
1132                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1133                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1134                 break;
1135         case SWITCHDEV_OBJ_ID_PORT_MDB:
1136                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1137                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1138                 break;
1139         default:
1140                 err = -EOPNOTSUPP;
1141                 break;
1142         }
1143
1144         return err;
1145 }
1146
1147 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1148                                                    u16 lag_id)
1149 {
1150         struct mlxsw_sp_port *mlxsw_sp_port;
1151         int i;
1152
1153         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
1154                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1155                 if (mlxsw_sp_port)
1156                         return mlxsw_sp_port;
1157         }
1158         return NULL;
1159 }
1160
1161 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1162                                   struct switchdev_obj_port_fdb *fdb,
1163                                   switchdev_obj_dump_cb_t *cb,
1164                                   struct net_device *orig_dev)
1165 {
1166         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1167         struct mlxsw_sp_port *tmp;
1168         struct mlxsw_sp_fid *f;
1169         u16 vport_fid;
1170         char *sfd_pl;
1171         char mac[ETH_ALEN];
1172         u16 fid;
1173         u8 local_port;
1174         u16 lag_id;
1175         u8 num_rec;
1176         int stored_err = 0;
1177         int i;
1178         int err;
1179
1180         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1181         if (!sfd_pl)
1182                 return -ENOMEM;
1183
1184         f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1185         vport_fid = f ? f->fid : 0;
1186
1187         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1188         do {
1189                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1190                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1191                 if (err)
1192                         goto out;
1193
1194                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1195
1196                 /* Even in case of error, we have to run the dump to the end
1197                  * so the session in firmware is finished.
1198                  */
1199                 if (stored_err)
1200                         continue;
1201
1202                 for (i = 0; i < num_rec; i++) {
1203                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1204                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1205                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1206                                                         &local_port);
1207                                 if (local_port == mlxsw_sp_port->local_port) {
1208                                         if (vport_fid && vport_fid == fid)
1209                                                 fdb->vid = 0;
1210                                         else if (!vport_fid &&
1211                                                  !mlxsw_sp_fid_is_vfid(fid))
1212                                                 fdb->vid = fid;
1213                                         else
1214                                                 continue;
1215                                         ether_addr_copy(fdb->addr, mac);
1216                                         fdb->ndm_state = NUD_REACHABLE;
1217                                         err = cb(&fdb->obj);
1218                                         if (err)
1219                                                 stored_err = err;
1220                                 }
1221                                 break;
1222                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1223                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1224                                                             mac, &fid, &lag_id);
1225                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1226                                 if (tmp && tmp->local_port ==
1227                                     mlxsw_sp_port->local_port) {
1228                                         /* LAG records can only point to LAG
1229                                          * devices or VLAN devices on top.
1230                                          */
1231                                         if (!netif_is_lag_master(orig_dev) &&
1232                                             !is_vlan_dev(orig_dev))
1233                                                 continue;
1234                                         if (vport_fid && vport_fid == fid)
1235                                                 fdb->vid = 0;
1236                                         else if (!vport_fid &&
1237                                                  !mlxsw_sp_fid_is_vfid(fid))
1238                                                 fdb->vid = fid;
1239                                         else
1240                                                 continue;
1241                                         ether_addr_copy(fdb->addr, mac);
1242                                         fdb->ndm_state = NUD_REACHABLE;
1243                                         err = cb(&fdb->obj);
1244                                         if (err)
1245                                                 stored_err = err;
1246                                 }
1247                                 break;
1248                         }
1249                 }
1250         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1251
1252 out:
1253         kfree(sfd_pl);
1254         return stored_err ? stored_err : err;
1255 }
1256
1257 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1258                                    struct switchdev_obj_port_vlan *vlan,
1259                                    switchdev_obj_dump_cb_t *cb)
1260 {
1261         u16 vid;
1262         int err = 0;
1263
1264         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1265                 vlan->flags = 0;
1266                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1267                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1268                 return cb(&vlan->obj);
1269         }
1270
1271         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1272                 vlan->flags = 0;
1273                 if (vid == mlxsw_sp_port->pvid)
1274                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1275                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1276                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1277                 vlan->vid_begin = vid;
1278                 vlan->vid_end = vid;
1279                 err = cb(&vlan->obj);
1280                 if (err)
1281                         break;
1282         }
1283         return err;
1284 }
1285
1286 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1287                                   struct switchdev_obj *obj,
1288                                   switchdev_obj_dump_cb_t *cb)
1289 {
1290         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1291         int err = 0;
1292
1293         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1294         if (!mlxsw_sp_port)
1295                 return -EINVAL;
1296
1297         switch (obj->id) {
1298         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1299                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1300                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1301                 break;
1302         case SWITCHDEV_OBJ_ID_PORT_FDB:
1303                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1304                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1305                                              obj->orig_dev);
1306                 break;
1307         default:
1308                 err = -EOPNOTSUPP;
1309                 break;
1310         }
1311
1312         return err;
1313 }
1314
1315 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1316         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1317         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1318         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1319         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1320         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1321 };
1322
1323 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1324                                         char *mac, u16 vid,
1325                                         struct net_device *dev)
1326 {
1327         struct switchdev_notifier_fdb_info info;
1328         unsigned long notifier_type;
1329
1330         if (learning_sync) {
1331                 info.addr = mac;
1332                 info.vid = vid;
1333                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1334                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1335         }
1336 }
1337
1338 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1339                                             char *sfn_pl, int rec_index,
1340                                             bool adding)
1341 {
1342         struct mlxsw_sp_port *mlxsw_sp_port;
1343         char mac[ETH_ALEN];
1344         u8 local_port;
1345         u16 vid, fid;
1346         bool do_notification = true;
1347         int err;
1348
1349         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1350         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1351         if (!mlxsw_sp_port) {
1352                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1353                 goto just_remove;
1354         }
1355
1356         if (mlxsw_sp_fid_is_vfid(fid)) {
1357                 struct mlxsw_sp_port *mlxsw_sp_vport;
1358
1359                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1360                                                                  fid);
1361                 if (!mlxsw_sp_vport) {
1362                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1363                         goto just_remove;
1364                 }
1365                 vid = 0;
1366                 /* Override the physical port with the vPort. */
1367                 mlxsw_sp_port = mlxsw_sp_vport;
1368         } else {
1369                 vid = fid;
1370         }
1371
1372         adding = adding && mlxsw_sp_port->learning;
1373
1374 do_fdb_op:
1375         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1376                                       adding, true);
1377         if (err) {
1378                 if (net_ratelimit())
1379                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1380                 return;
1381         }
1382
1383         if (!do_notification)
1384                 return;
1385         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1386                                     adding, mac, vid, mlxsw_sp_port->dev);
1387         return;
1388
1389 just_remove:
1390         adding = false;
1391         do_notification = false;
1392         goto do_fdb_op;
1393 }
1394
1395 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1396                                                 char *sfn_pl, int rec_index,
1397                                                 bool adding)
1398 {
1399         struct mlxsw_sp_port *mlxsw_sp_port;
1400         struct net_device *dev;
1401         char mac[ETH_ALEN];
1402         u16 lag_vid = 0;
1403         u16 lag_id;
1404         u16 vid, fid;
1405         bool do_notification = true;
1406         int err;
1407
1408         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1409         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1410         if (!mlxsw_sp_port) {
1411                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1412                 goto just_remove;
1413         }
1414
1415         if (mlxsw_sp_fid_is_vfid(fid)) {
1416                 struct mlxsw_sp_port *mlxsw_sp_vport;
1417
1418                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1419                                                                  fid);
1420                 if (!mlxsw_sp_vport) {
1421                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1422                         goto just_remove;
1423                 }
1424
1425                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1426                 dev = mlxsw_sp_vport->dev;
1427                 vid = 0;
1428                 /* Override the physical port with the vPort. */
1429                 mlxsw_sp_port = mlxsw_sp_vport;
1430         } else {
1431                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1432                 vid = fid;
1433         }
1434
1435         adding = adding && mlxsw_sp_port->learning;
1436
1437 do_fdb_op:
1438         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1439                                           adding, true);
1440         if (err) {
1441                 if (net_ratelimit())
1442                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1443                 return;
1444         }
1445
1446         if (!do_notification)
1447                 return;
1448         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1449                                     vid, dev);
1450         return;
1451
1452 just_remove:
1453         adding = false;
1454         do_notification = false;
1455         goto do_fdb_op;
1456 }
1457
1458 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1459                                             char *sfn_pl, int rec_index)
1460 {
1461         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1462         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1463                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1464                                                 rec_index, true);
1465                 break;
1466         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1467                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1468                                                 rec_index, false);
1469                 break;
1470         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1471                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1472                                                     rec_index, true);
1473                 break;
1474         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1475                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1476                                                     rec_index, false);
1477                 break;
1478         }
1479 }
1480
1481 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1482 {
1483         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1484                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1485 }
1486
1487 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1488 {
1489         struct mlxsw_sp *mlxsw_sp;
1490         char *sfn_pl;
1491         u8 num_rec;
1492         int i;
1493         int err;
1494
1495         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1496         if (!sfn_pl)
1497                 return;
1498
1499         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1500
1501         rtnl_lock();
1502         do {
1503                 mlxsw_reg_sfn_pack(sfn_pl);
1504                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1505                 if (err) {
1506                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1507                         break;
1508                 }
1509                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1510                 for (i = 0; i < num_rec; i++)
1511                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1512
1513         } while (num_rec);
1514         rtnl_unlock();
1515
1516         kfree(sfn_pl);
1517         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1518 }
1519
1520 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1521 {
1522         int err;
1523
1524         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1525         if (err) {
1526                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1527                 return err;
1528         }
1529         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1530         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1531         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1532         return 0;
1533 }
1534
1535 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1536 {
1537         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1538 }
1539
1540 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1541 {
1542         return mlxsw_sp_fdb_init(mlxsw_sp);
1543 }
1544
1545 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1546 {
1547         mlxsw_sp_fdb_fini(mlxsw_sp);
1548 }
1549
1550 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1551 {
1552         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1553 }
1554
1555 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1556 {
1557 }