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_table_set(struct mlxsw_sp_port *mlxsw_sp_port,
 170                                            u16 idx_begin, u16 idx_end,
 171                                            enum mlxsw_sp_flood_table table,
 172                                            bool set)
 173 {
 174         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 175         u16 local_port = mlxsw_sp_port->local_port;
 176         enum mlxsw_flood_table_type table_type;
 177         u16 range = idx_end - idx_begin + 1;
 178         char *sftr_pl;
 179         int err;
 180
 181         if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 182                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
 183         else
 184                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
 185
 186         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 187         if (!sftr_pl)
 188                 return -ENOMEM;
 189
 190         mlxsw_reg_sftr_pack(sftr_pl, table, idx_begin,
 191                             table_type, range, local_port, set);
 192         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 193
 194         kfree(sftr_pl);
 195         return err;
 196 }
 197
 198 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 199                                      u16 idx_begin, u16 idx_end, bool uc_set,
 200                                      bool bm_set)
 201 {
 202         int err;
 203
 204         err = __mlxsw_sp_port_flood_table_set(mlxsw_sp_port, idx_begin, idx_end,
 205                                               MLXSW_SP_FLOOD_TABLE_UC, uc_set);
 206         if (err)
 207                 return err;
 208
 209         err = __mlxsw_sp_port_flood_table_set(mlxsw_sp_port, idx_begin, idx_end,
 210                                               MLXSW_SP_FLOOD_TABLE_BM, bm_set);
 211         if (err)
 212                 goto err_flood_bm_set;
 213
 214         return 0;
 215
 216 err_flood_bm_set:
 217         __mlxsw_sp_port_flood_table_set(mlxsw_sp_port, idx_begin, idx_end,
 218                                         MLXSW_SP_FLOOD_TABLE_UC, !uc_set);
 219         return err;
 220 }
 221
 222 static int mlxsw_sp_port_flood_table_set(struct mlxsw_sp_port *mlxsw_sp_port,
 223                                          enum mlxsw_sp_flood_table table,
 224                                          bool set)
 225 {
 226         struct net_device *dev = mlxsw_sp_port->dev;
 227         u16 vid, last_visited_vid;
 228         int err;
 229
 230         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 231                 u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 232                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 233
 234                 return __mlxsw_sp_port_flood_table_set(mlxsw_sp_port, vfid,
 235                                                        vfid, table, set);
 236         }
 237
 238         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 239                 err = __mlxsw_sp_port_flood_table_set(mlxsw_sp_port, vid, vid,
 240                                                       table, set);
 241                 if (err) {
 242                         last_visited_vid = vid;
 243                         goto err_port_flood_set;
 244                 }
 245         }
 246
 247         return 0;
 248
 249 err_port_flood_set:
 250         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 251                 __mlxsw_sp_port_flood_table_set(mlxsw_sp_port, vid, vid, table,
 252                                                 !set);
 253         netdev_err(dev, "Failed to configure unicast flooding\n");
 254         return err;
 255 }
 256
 257 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 258                              bool set)
 259 {
 260         u16 vfid;
 261
 262         /* In case of vFIDs, index into the flooding table is relative to
 263          * the start of the vFIDs range.
 264          */
 265         vfid = mlxsw_sp_fid_to_vfid(fid);
 266         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set, set);
 267 }
 268
 269 static int mlxsw_sp_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 270                                       bool set)
 271 {
 272         u16 vid;
 273         int err;
 274
 275         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 276                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 277
 278                 return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 279                                                         set);
 280         }
 281
 282         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 283                 err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 284                                                        set);
 285                 if (err)
 286                         goto err_port_vid_learning_set;
 287         }
 288
 289         return 0;
 290
 291 err_port_vid_learning_set:
 292         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 293                 __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid, !set);
 294         return err;
 295 }
 296
 297 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 298                                            struct switchdev_trans *trans,
 299                                            unsigned long brport_flags)
 300 {
 301         unsigned long learning = mlxsw_sp_port->learning ? BR_LEARNING : 0;
 302         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 303         int err;
 304
 305         if (!mlxsw_sp_port->bridged)
 306                 return -EINVAL;
 307
 308         if (switchdev_trans_ph_prepare(trans))
 309                 return 0;
 310
 311         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 312                 err = mlxsw_sp_port_flood_table_set(mlxsw_sp_port,
 313                                                     MLXSW_SP_FLOOD_TABLE_UC,
 314                                                     !mlxsw_sp_port->uc_flood);
 315                 if (err)
 316                         return err;
 317         }
 318
 319         if ((learning ^ brport_flags) & BR_LEARNING) {
 320                 err = mlxsw_sp_port_learning_set(mlxsw_sp_port,
 321                                                  !mlxsw_sp_port->learning);
 322                 if (err)
 323                         goto err_port_learning_set;
 324         }
 325
 326         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 327         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 328         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 329
 330         return 0;
 331
 332 err_port_learning_set:
 333         if ((uc_flood ^ brport_flags) & BR_FLOOD)
 334                 mlxsw_sp_port_flood_table_set(mlxsw_sp_port,
 335                                               MLXSW_SP_FLOOD_TABLE_UC,
 336                                               mlxsw_sp_port->uc_flood);
 337         return err;
 338 }
 339
 340 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 341 {
 342         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 343         int err;
 344
 345         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 346         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 347         if (err)
 348                 return err;
 349         mlxsw_sp->ageing_time = ageing_time;
 350         return 0;
 351 }
 352
 353 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 354                                             struct switchdev_trans *trans,
 355                                             unsigned long ageing_clock_t)
 356 {
 357         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 358         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 359         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 360
 361         if (switchdev_trans_ph_prepare(trans)) {
 362                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 363                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 364                         return -ERANGE;
 365                 else
 366                         return 0;
 367         }
 368
 369         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 370 }
 371
 372 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 373                                           struct switchdev_trans *trans,
 374                                           struct net_device *orig_dev,
 375                                           bool vlan_enabled)
 376 {
 377         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 378
 379         /* SWITCHDEV_TRANS_PREPARE phase */
 380         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 381                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 382                 return -EINVAL;
 383         }
 384
 385         return 0;
 386 }
 387
 388 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 389                                   const struct switchdev_attr *attr,
 390                                   struct switchdev_trans *trans)
 391 {
 392         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 393         int err = 0;
 394
 395         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 396         if (!mlxsw_sp_port)
 397                 return -EINVAL;
 398
 399         switch (attr->id) {
 400         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 401                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 402                                                        attr->u.stp_state);
 403                 break;
 404         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 405                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 406                                                       attr->u.brport_flags);
 407                 break;
 408         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 409                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 410                                                        attr->u.ageing_time);
 411                 break;
 412         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 413                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 414                                                      attr->orig_dev,
 415                                                      attr->u.vlan_filtering);
 416                 break;
 417         default:
 418                 err = -EOPNOTSUPP;
 419                 break;
 420         }
 421
 422         return err;
 423 }
 424
 425 static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 426 {
 427         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 428
 429         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
 430         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 431 }
 432
 433 static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
 434 {
 435         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 436         char svfa_pl[MLXSW_REG_SVFA_LEN];
 437
 438         mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
 439         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 440 }
 441
 442 static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
 443 {
 444         struct mlxsw_sp_fid *f;
 445
 446         f = kzalloc(sizeof(*f), GFP_KERNEL);
 447         if (!f)
 448                 return NULL;
 449
 450         f->fid = fid;
 451
 452         return f;
 453 }
 454
 455 struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 456 {
 457         struct mlxsw_sp_fid *f;
 458         int err;
 459
 460         err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
 461         if (err)
 462                 return ERR_PTR(err);
 463
 464         /* Although all the ports member in the FID might be using a
 465          * {Port, VID} to FID mapping, we create a global VID-to-FID
 466          * mapping. This allows a port to transition to VLAN mode,
 467          * knowing the global mapping exists.
 468          */
 469         err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
 470         if (err)
 471                 goto err_fid_map;
 472
 473         f = mlxsw_sp_fid_alloc(fid);
 474         if (!f) {
 475                 err = -ENOMEM;
 476                 goto err_allocate_fid;
 477         }
 478
 479         list_add(&f->list, &mlxsw_sp->fids);
 480
 481         return f;
 482
 483 err_allocate_fid:
 484         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 485 err_fid_map:
 486         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 487         return ERR_PTR(err);
 488 }
 489
 490 void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f)
 491 {
 492         u16 fid = f->fid;
 493
 494         list_del(&f->list);
 495
 496         if (f->r)
 497                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
 498
 499         kfree(f);
 500
 501         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 502
 503         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 504 }
 505
 506 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 507                                     u16 fid)
 508 {
 509         struct mlxsw_sp_fid *f;
 510
 511         if (test_bit(fid, mlxsw_sp_port->active_vlans))
 512                 return 0;
 513
 514         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 515         if (!f) {
 516                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 517                 if (IS_ERR(f))
 518                         return PTR_ERR(f);
 519         }
 520
 521         f->ref_count++;
 522
 523         netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
 524
 525         return 0;
 526 }
 527
 528 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 529                                       u16 fid)
 530 {
 531         struct mlxsw_sp_fid *f;
 532
 533         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 534         if (WARN_ON(!f))
 535                 return;
 536
 537         netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
 538
 539         mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 540
 541         if (--f->ref_count == 0)
 542                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 543 }
 544
 545 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 546                                  bool valid)
 547 {
 548         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 549
 550         /* If port doesn't have vPorts, then it can use the global
 551          * VID-to-FID mapping.
 552          */
 553         if (list_empty(&mlxsw_sp_port->vports_list))
 554                 return 0;
 555
 556         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 557 }
 558
 559 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 560                                   u16 fid_begin, u16 fid_end)
 561 {
 562         int fid, err;
 563
 564         for (fid = fid_begin; fid <= fid_end; fid++) {
 565                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 566                 if (err)
 567                         goto err_port_fid_join;
 568         }
 569
 570         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 571                                         mlxsw_sp_port->uc_flood, true);
 572         if (err)
 573                 goto err_port_flood_set;
 574
 575         for (fid = fid_begin; fid <= fid_end; fid++) {
 576                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 577                 if (err)
 578                         goto err_port_fid_map;
 579         }
 580
 581         return 0;
 582
 583 err_port_fid_map:
 584         for (fid--; fid >= fid_begin; fid--)
 585                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 586         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 587                                   false);
 588 err_port_flood_set:
 589         fid = fid_end;
 590 err_port_fid_join:
 591         for (fid--; fid >= fid_begin; fid--)
 592                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 593         return err;
 594 }
 595
 596 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 597                                     u16 fid_begin, u16 fid_end)
 598 {
 599         int fid;
 600
 601         for (fid = fid_begin; fid <= fid_end; fid++)
 602                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 603
 604         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 605                                   false);
 606
 607         for (fid = fid_begin; fid <= fid_end; fid++)
 608                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 609 }
 610
 611 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 612                                     u16 vid)
 613 {
 614         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 615         char spvid_pl[MLXSW_REG_SPVID_LEN];
 616
 617         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 618         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 619 }
 620
 621 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 622                                             bool allow)
 623 {
 624         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 625         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 626
 627         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 628         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 629 }
 630
 631 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 632 {
 633         struct net_device *dev = mlxsw_sp_port->dev;
 634         int err;
 635
 636         if (!vid) {
 637                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 638                 if (err) {
 639                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 640                         return err;
 641                 }
 642         } else {
 643                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 644                 if (err) {
 645                         netdev_err(dev, "Failed to set PVID\n");
 646                         return err;
 647                 }
 648
 649                 /* Only allow if not already allowed. */
 650                 if (!mlxsw_sp_port->pvid) {
 651                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 652                                                                true);
 653                         if (err) {
 654                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 655                                 goto err_port_allow_untagged_set;
 656                         }
 657                 }
 658         }
 659
 660         mlxsw_sp_port->pvid = vid;
 661         return 0;
 662
 663 err_port_allow_untagged_set:
 664         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 665         return err;
 666 }
 667
 668 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 669                                      u16 vid_begin, u16 vid_end, bool is_member,
 670                                      bool untagged)
 671 {
 672         u16 vid, vid_e;
 673         int err;
 674
 675         for (vid = vid_begin; vid <= vid_end;
 676              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 677                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 678                             vid_end);
 679
 680                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 681                                              is_member, untagged);
 682                 if (err)
 683                         return err;
 684         }
 685
 686         return 0;
 687 }
 688
 689 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 690                                           u16 vid_begin, u16 vid_end,
 691                                           bool learn_enable)
 692 {
 693         u16 vid, vid_e;
 694         int err;
 695
 696         for (vid = vid_begin; vid <= vid_end;
 697              vid += MLXSW_REG_SPVMLR_REC_MAX_COUNT) {
 698                 vid_e = min((u16) (vid + MLXSW_REG_SPVMLR_REC_MAX_COUNT - 1),
 699                             vid_end);
 700
 701                 err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid,
 702                                                        vid_e, learn_enable);
 703                 if (err)
 704                         return err;
 705         }
 706
 707         return 0;
 708 }
 709
 710 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 711                                      u16 vid_begin, u16 vid_end,
 712                                      bool flag_untagged, bool flag_pvid)
 713 {
 714         struct net_device *dev = mlxsw_sp_port->dev;
 715         u16 vid, old_pvid;
 716         int err;
 717
 718         if (!mlxsw_sp_port->bridged)
 719                 return -EINVAL;
 720
 721         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 722         if (err) {
 723                 netdev_err(dev, "Failed to join FIDs\n");
 724                 return err;
 725         }
 726
 727         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 728                                         true, flag_untagged);
 729         if (err) {
 730                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 731                            vid_end);
 732                 goto err_port_vlans_set;
 733         }
 734
 735         old_pvid = mlxsw_sp_port->pvid;
 736         if (flag_pvid && old_pvid != vid_begin) {
 737                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 738                 if (err) {
 739                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 740                         goto err_port_pvid_set;
 741                 }
 742         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 743                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 744                 if (err) {
 745                         netdev_err(dev, "Unable to del PVID\n");
 746                         goto err_port_pvid_set;
 747                 }
 748         }
 749
 750         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
 751                                              mlxsw_sp_port->learning);
 752         if (err) {
 753                 netdev_err(dev, "Failed to set learning for VIDs %d-%d\n",
 754                            vid_begin, vid_end);
 755                 goto err_port_vid_learning_set;
 756         }
 757
 758         /* Changing activity bits only if HW operation succeded */
 759         for (vid = vid_begin; vid <= vid_end; vid++) {
 760                 set_bit(vid, mlxsw_sp_port->active_vlans);
 761                 if (flag_untagged)
 762                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 763                 else
 764                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 765         }
 766
 767         /* STP state change must be done after we set active VLANs */
 768         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 769                                           mlxsw_sp_port->stp_state);
 770         if (err) {
 771                 netdev_err(dev, "Failed to set STP state\n");
 772                 goto err_port_stp_state_set;
 773         }
 774
 775         return 0;
 776
 777 err_port_stp_state_set:
 778         for (vid = vid_begin; vid <= vid_end; vid++)
 779                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 780         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
 781                                        false);
 782 err_port_vid_learning_set:
 783         if (old_pvid != mlxsw_sp_port->pvid)
 784                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 785 err_port_pvid_set:
 786         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 787                                   false);
 788 err_port_vlans_set:
 789         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 790         return err;
 791 }
 792
 793 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 794                                    const struct switchdev_obj_port_vlan *vlan,
 795                                    struct switchdev_trans *trans)
 796 {
 797         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 798         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 799
 800         if (switchdev_trans_ph_prepare(trans))
 801                 return 0;
 802
 803         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 804                                          vlan->vid_begin, vlan->vid_end,
 805                                          flag_untagged, flag_pvid);
 806 }
 807
 808 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 809 {
 810         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 811                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 812 }
 813
 814 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 815 {
 816         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 817                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 818 }
 819
 820 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 821                                      const char *mac, u16 fid, bool adding,
 822                                      enum mlxsw_reg_sfd_rec_action action,
 823                                      bool dynamic)
 824 {
 825         char *sfd_pl;
 826         int err;
 827
 828         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 829         if (!sfd_pl)
 830                 return -ENOMEM;
 831
 832         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 833         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 834                               mac, fid, action, local_port);
 835         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 836         kfree(sfd_pl);
 837
 838         return err;
 839 }
 840
 841 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 842                                    const char *mac, u16 fid, bool adding,
 843                                    bool dynamic)
 844 {
 845         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
 846                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
 847 }
 848
 849 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
 850                         bool adding)
 851 {
 852         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
 853                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
 854                                          false);
 855 }
 856
 857 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 858                                        const char *mac, u16 fid, u16 lag_vid,
 859                                        bool adding, bool dynamic)
 860 {
 861         char *sfd_pl;
 862         int err;
 863
 864         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 865         if (!sfd_pl)
 866                 return -ENOMEM;
 867
 868         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 869         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 870                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 871                                   lag_vid, lag_id);
 872         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 873         kfree(sfd_pl);
 874
 875         return err;
 876 }
 877
 878 static int
 879 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 880                              const struct switchdev_obj_port_fdb *fdb,
 881                              struct switchdev_trans *trans)
 882 {
 883         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 884         u16 lag_vid = 0;
 885
 886         if (switchdev_trans_ph_prepare(trans))
 887                 return 0;
 888
 889         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 890                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 891         }
 892
 893         if (!mlxsw_sp_port->lagged)
 894                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 895                                                mlxsw_sp_port->local_port,
 896                                                fdb->addr, fid, true, false);
 897         else
 898                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 899                                                    mlxsw_sp_port->lag_id,
 900                                                    fdb->addr, fid, lag_vid,
 901                                                    true, false);
 902 }
 903
 904 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 905                                 u16 fid, u16 mid, bool adding)
 906 {
 907         char *sfd_pl;
 908         int err;
 909
 910         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 911         if (!sfd_pl)
 912                 return -ENOMEM;
 913
 914         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 915         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 916                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 917         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 918         kfree(sfd_pl);
 919         return err;
 920 }
 921
 922 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 923                                   bool add, bool clear_all_ports)
 924 {
 925         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 926         char *smid_pl;
 927         int err, i;
 928
 929         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 930         if (!smid_pl)
 931                 return -ENOMEM;
 932
 933         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 934         if (clear_all_ports) {
 935                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 936                         if (mlxsw_sp->ports[i])
 937                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 938         }
 939         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 940         kfree(smid_pl);
 941         return err;
 942 }
 943
 944 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 945                                               const unsigned char *addr,
 946                                               u16 fid)
 947 {
 948         struct mlxsw_sp_mid *mid;
 949
 950         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 951                 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid)
 952                         return mid;
 953         }
 954         return NULL;
 955 }
 956
 957 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 958                                                 const unsigned char *addr,
 959                                                 u16 fid)
 960 {
 961         struct mlxsw_sp_mid *mid;
 962         u16 mid_idx;
 963
 964         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 965                                       MLXSW_SP_MID_MAX);
 966         if (mid_idx == MLXSW_SP_MID_MAX)
 967                 return NULL;
 968
 969         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 970         if (!mid)
 971                 return NULL;
 972
 973         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 974         ether_addr_copy(mid->addr, addr);
 975         mid->fid = fid;
 976         mid->mid = mid_idx;
 977         mid->ref_count = 0;
 978         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 979
 980         return mid;
 981 }
 982
 983 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 984                                  struct mlxsw_sp_mid *mid)
 985 {
 986         if (--mid->ref_count == 0) {
 987                 list_del(&mid->list);
 988                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 989                 kfree(mid);
 990                 return 1;
 991         }
 992         return 0;
 993 }
 994
 995 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 996                                  const struct switchdev_obj_port_mdb *mdb,
 997                                  struct switchdev_trans *trans)
 998 {
 999         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1000         struct net_device *dev = mlxsw_sp_port->dev;
1001         struct mlxsw_sp_mid *mid;
1002         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1003         int err = 0;
1004
1005         if (switchdev_trans_ph_prepare(trans))
1006                 return 0;
1007
1008         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid);
1009         if (!mid) {
1010                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, fid);
1011                 if (!mid) {
1012                         netdev_err(dev, "Unable to allocate MC group\n");
1013                         return -ENOMEM;
1014                 }
1015         }
1016         mid->ref_count++;
1017
1018         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
1019                                      mid->ref_count == 1);
1020         if (err) {
1021                 netdev_err(dev, "Unable to set SMID\n");
1022                 goto err_out;
1023         }
1024
1025         if (mid->ref_count == 1) {
1026                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
1027                                            true);
1028                 if (err) {
1029                         netdev_err(dev, "Unable to set MC SFD\n");
1030                         goto err_out;
1031                 }
1032         }
1033
1034         return 0;
1035
1036 err_out:
1037         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
1038         return err;
1039 }
1040
1041 static int mlxsw_sp_port_obj_add(struct net_device *dev,
1042                                  const struct switchdev_obj *obj,
1043                                  struct switchdev_trans *trans)
1044 {
1045         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1046         int err = 0;
1047
1048         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1049         if (!mlxsw_sp_port)
1050                 return -EINVAL;
1051
1052         switch (obj->id) {
1053         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1054                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1055                         return 0;
1056
1057                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
1058                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
1059                                               trans);
1060                 break;
1061         case SWITCHDEV_OBJ_ID_PORT_FDB:
1062                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
1063                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
1064                                                    trans);
1065                 break;
1066         case SWITCHDEV_OBJ_ID_PORT_MDB:
1067                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
1068                                             SWITCHDEV_OBJ_PORT_MDB(obj),
1069                                             trans);
1070                 break;
1071         default:
1072                 err = -EOPNOTSUPP;
1073                 break;
1074         }
1075
1076         return err;
1077 }
1078
1079 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1080                                      u16 vid_begin, u16 vid_end)
1081 {
1082         u16 vid, pvid;
1083
1084         if (!mlxsw_sp_port->bridged)
1085                 return -EINVAL;
1086
1087         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
1088                                        false);
1089
1090         pvid = mlxsw_sp_port->pvid;
1091         if (pvid >= vid_begin && pvid <= vid_end)
1092                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1093
1094         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
1095                                   false);
1096
1097         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1098
1099         /* Changing activity bits only if HW operation succeded */
1100         for (vid = vid_begin; vid <= vid_end; vid++)
1101                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1102
1103         return 0;
1104 }
1105
1106 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1107                                    const struct switchdev_obj_port_vlan *vlan)
1108 {
1109         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
1110                                          vlan->vid_end);
1111 }
1112
1113 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1114 {
1115         u16 vid;
1116
1117         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1118                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
1119 }
1120
1121 static int
1122 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1123                              const struct switchdev_obj_port_fdb *fdb)
1124 {
1125         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1126         u16 lag_vid = 0;
1127
1128         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1129                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1130         }
1131
1132         if (!mlxsw_sp_port->lagged)
1133                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1134                                                mlxsw_sp_port->local_port,
1135                                                fdb->addr, fid,
1136                                                false, false);
1137         else
1138                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1139                                                    mlxsw_sp_port->lag_id,
1140                                                    fdb->addr, fid, lag_vid,
1141                                                    false, false);
1142 }
1143
1144 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1145                                  const struct switchdev_obj_port_mdb *mdb)
1146 {
1147         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1148         struct net_device *dev = mlxsw_sp_port->dev;
1149         struct mlxsw_sp_mid *mid;
1150         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1151         u16 mid_idx;
1152         int err = 0;
1153
1154         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid);
1155         if (!mid) {
1156                 netdev_err(dev, "Unable to remove port from MC DB\n");
1157                 return -EINVAL;
1158         }
1159
1160         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1161         if (err)
1162                 netdev_err(dev, "Unable to remove port from SMID\n");
1163
1164         mid_idx = mid->mid;
1165         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1166                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1167                                            false);
1168                 if (err)
1169                         netdev_err(dev, "Unable to remove MC SFD\n");
1170         }
1171
1172         return err;
1173 }
1174
1175 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1176                                  const struct switchdev_obj *obj)
1177 {
1178         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1179         int err = 0;
1180
1181         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1182         if (!mlxsw_sp_port)
1183                 return -EINVAL;
1184
1185         switch (obj->id) {
1186         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1187                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1188                         return 0;
1189
1190                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1191                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1192                 break;
1193         case SWITCHDEV_OBJ_ID_PORT_FDB:
1194                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1195                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1196                 break;
1197         case SWITCHDEV_OBJ_ID_PORT_MDB:
1198                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1199                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1200                 break;
1201         default:
1202                 err = -EOPNOTSUPP;
1203                 break;
1204         }
1205
1206         return err;
1207 }
1208
1209 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1210                                                    u16 lag_id)
1211 {
1212         struct mlxsw_sp_port *mlxsw_sp_port;
1213         u64 max_lag_members;
1214         int i;
1215
1216         max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core,
1217                                              MAX_LAG_MEMBERS);
1218         for (i = 0; i < max_lag_members; i++) {
1219                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1220                 if (mlxsw_sp_port)
1221                         return mlxsw_sp_port;
1222         }
1223         return NULL;
1224 }
1225
1226 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1227                                   struct switchdev_obj_port_fdb *fdb,
1228                                   switchdev_obj_dump_cb_t *cb,
1229                                   struct net_device *orig_dev)
1230 {
1231         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1232         struct mlxsw_sp_port *tmp;
1233         struct mlxsw_sp_fid *f;
1234         u16 vport_fid;
1235         char *sfd_pl;
1236         char mac[ETH_ALEN];
1237         u16 fid;
1238         u8 local_port;
1239         u16 lag_id;
1240         u8 num_rec;
1241         int stored_err = 0;
1242         int i;
1243         int err;
1244
1245         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1246         if (!sfd_pl)
1247                 return -ENOMEM;
1248
1249         f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1250         vport_fid = f ? f->fid : 0;
1251
1252         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1253         do {
1254                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1255                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1256                 if (err)
1257                         goto out;
1258
1259                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1260
1261                 /* Even in case of error, we have to run the dump to the end
1262                  * so the session in firmware is finished.
1263                  */
1264                 if (stored_err)
1265                         continue;
1266
1267                 for (i = 0; i < num_rec; i++) {
1268                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1269                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1270                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1271                                                         &local_port);
1272                                 if (local_port == mlxsw_sp_port->local_port) {
1273                                         if (vport_fid && vport_fid == fid)
1274                                                 fdb->vid = 0;
1275                                         else if (!vport_fid &&
1276                                                  !mlxsw_sp_fid_is_vfid(fid))
1277                                                 fdb->vid = fid;
1278                                         else
1279                                                 continue;
1280                                         ether_addr_copy(fdb->addr, mac);
1281                                         fdb->ndm_state = NUD_REACHABLE;
1282                                         err = cb(&fdb->obj);
1283                                         if (err)
1284                                                 stored_err = err;
1285                                 }
1286                                 break;
1287                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1288                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1289                                                             mac, &fid, &lag_id);
1290                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1291                                 if (tmp && tmp->local_port ==
1292                                     mlxsw_sp_port->local_port) {
1293                                         /* LAG records can only point to LAG
1294                                          * devices or VLAN devices on top.
1295                                          */
1296                                         if (!netif_is_lag_master(orig_dev) &&
1297                                             !is_vlan_dev(orig_dev))
1298                                                 continue;
1299                                         if (vport_fid && vport_fid == fid)
1300                                                 fdb->vid = 0;
1301                                         else if (!vport_fid &&
1302                                                  !mlxsw_sp_fid_is_vfid(fid))
1303                                                 fdb->vid = fid;
1304                                         else
1305                                                 continue;
1306                                         ether_addr_copy(fdb->addr, mac);
1307                                         fdb->ndm_state = NUD_REACHABLE;
1308                                         err = cb(&fdb->obj);
1309                                         if (err)
1310                                                 stored_err = err;
1311                                 }
1312                                 break;
1313                         }
1314                 }
1315         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1316
1317 out:
1318         kfree(sfd_pl);
1319         return stored_err ? stored_err : err;
1320 }
1321
1322 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1323                                    struct switchdev_obj_port_vlan *vlan,
1324                                    switchdev_obj_dump_cb_t *cb)
1325 {
1326         u16 vid;
1327         int err = 0;
1328
1329         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1330                 vlan->flags = 0;
1331                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1332                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1333                 return cb(&vlan->obj);
1334         }
1335
1336         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1337                 vlan->flags = 0;
1338                 if (vid == mlxsw_sp_port->pvid)
1339                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1340                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1341                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1342                 vlan->vid_begin = vid;
1343                 vlan->vid_end = vid;
1344                 err = cb(&vlan->obj);
1345                 if (err)
1346                         break;
1347         }
1348         return err;
1349 }
1350
1351 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1352                                   struct switchdev_obj *obj,
1353                                   switchdev_obj_dump_cb_t *cb)
1354 {
1355         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1356         int err = 0;
1357
1358         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1359         if (!mlxsw_sp_port)
1360                 return -EINVAL;
1361
1362         switch (obj->id) {
1363         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1364                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1365                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1366                 break;
1367         case SWITCHDEV_OBJ_ID_PORT_FDB:
1368                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1369                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1370                                              obj->orig_dev);
1371                 break;
1372         default:
1373                 err = -EOPNOTSUPP;
1374                 break;
1375         }
1376
1377         return err;
1378 }
1379
1380 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1381         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1382         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1383         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1384         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1385         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1386 };
1387
1388 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1389                                         char *mac, u16 vid,
1390                                         struct net_device *dev)
1391 {
1392         struct switchdev_notifier_fdb_info info;
1393         unsigned long notifier_type;
1394
1395         if (learning_sync) {
1396                 info.addr = mac;
1397                 info.vid = vid;
1398                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1399                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1400         }
1401 }
1402
1403 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1404                                             char *sfn_pl, int rec_index,
1405                                             bool adding)
1406 {
1407         struct mlxsw_sp_port *mlxsw_sp_port;
1408         char mac[ETH_ALEN];
1409         u8 local_port;
1410         u16 vid, fid;
1411         bool do_notification = true;
1412         int err;
1413
1414         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1415         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1416         if (!mlxsw_sp_port) {
1417                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1418                 goto just_remove;
1419         }
1420
1421         if (mlxsw_sp_fid_is_vfid(fid)) {
1422                 struct mlxsw_sp_port *mlxsw_sp_vport;
1423
1424                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1425                                                                  fid);
1426                 if (!mlxsw_sp_vport) {
1427                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1428                         goto just_remove;
1429                 }
1430                 vid = 0;
1431                 /* Override the physical port with the vPort. */
1432                 mlxsw_sp_port = mlxsw_sp_vport;
1433         } else {
1434                 vid = fid;
1435         }
1436
1437 do_fdb_op:
1438         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
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,
1449                                     adding, mac, vid, mlxsw_sp_port->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_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1459                                                 char *sfn_pl, int rec_index,
1460                                                 bool adding)
1461 {
1462         struct mlxsw_sp_port *mlxsw_sp_port;
1463         struct net_device *dev;
1464         char mac[ETH_ALEN];
1465         u16 lag_vid = 0;
1466         u16 lag_id;
1467         u16 vid, fid;
1468         bool do_notification = true;
1469         int err;
1470
1471         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1472         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1473         if (!mlxsw_sp_port) {
1474                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1475                 goto just_remove;
1476         }
1477
1478         if (mlxsw_sp_fid_is_vfid(fid)) {
1479                 struct mlxsw_sp_port *mlxsw_sp_vport;
1480
1481                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1482                                                                  fid);
1483                 if (!mlxsw_sp_vport) {
1484                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1485                         goto just_remove;
1486                 }
1487
1488                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1489                 dev = mlxsw_sp_vport->dev;
1490                 vid = 0;
1491                 /* Override the physical port with the vPort. */
1492                 mlxsw_sp_port = mlxsw_sp_vport;
1493         } else {
1494                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1495                 vid = fid;
1496         }
1497
1498 do_fdb_op:
1499         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1500                                           adding, true);
1501         if (err) {
1502                 if (net_ratelimit())
1503                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1504                 return;
1505         }
1506
1507         if (!do_notification)
1508                 return;
1509         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1510                                     vid, dev);
1511         return;
1512
1513 just_remove:
1514         adding = false;
1515         do_notification = false;
1516         goto do_fdb_op;
1517 }
1518
1519 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1520                                             char *sfn_pl, int rec_index)
1521 {
1522         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1523         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1524                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1525                                                 rec_index, true);
1526                 break;
1527         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1528                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1529                                                 rec_index, false);
1530                 break;
1531         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1532                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1533                                                     rec_index, true);
1534                 break;
1535         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1536                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1537                                                     rec_index, false);
1538                 break;
1539         }
1540 }
1541
1542 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1543 {
1544         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1545                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1546 }
1547
1548 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1549 {
1550         struct mlxsw_sp *mlxsw_sp;
1551         char *sfn_pl;
1552         u8 num_rec;
1553         int i;
1554         int err;
1555
1556         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1557         if (!sfn_pl)
1558                 return;
1559
1560         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1561
1562         rtnl_lock();
1563         mlxsw_reg_sfn_pack(sfn_pl);
1564         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1565         if (err) {
1566                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1567                 goto out;
1568         }
1569         num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1570         for (i = 0; i < num_rec; i++)
1571                 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1572
1573 out:
1574         rtnl_unlock();
1575         kfree(sfn_pl);
1576         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1577 }
1578
1579 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1580 {
1581         int err;
1582
1583         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1584         if (err) {
1585                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1586                 return err;
1587         }
1588         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1589         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1590         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1591         return 0;
1592 }
1593
1594 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1595 {
1596         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1597 }
1598
1599 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1600 {
1601         return mlxsw_sp_fdb_init(mlxsw_sp);
1602 }
1603
1604 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1605 {
1606         mlxsw_sp_fdb_fini(mlxsw_sp);
1607 }
1608
1609 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1610 {
1611         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1612 }
1613
1614 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1615 {
1616 }