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_op(mlxsw_sp, fid, false);
 454 }
 455
 456 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 457                                     u16 fid)
 458 {
 459         struct mlxsw_sp_fid *f;
 460
 461         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 462         if (!f) {
 463                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 464                 if (IS_ERR(f))
 465                         return PTR_ERR(f);
 466         }
 467
 468         f->ref_count++;
 469
 470         netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
 471
 472         return 0;
 473 }
 474
 475 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 476                                       u16 fid)
 477 {
 478         struct mlxsw_sp_fid *f;
 479
 480         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 481         if (WARN_ON(!f))
 482                 return;
 483
 484         netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
 485
 486         mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 487
 488         if (--f->ref_count == 0)
 489                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 490 }
 491
 492 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 493                                  bool valid)
 494 {
 495         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 496
 497         /* If port doesn't have vPorts, then it can use the global
 498          * VID-to-FID mapping.
 499          */
 500         if (list_empty(&mlxsw_sp_port->vports_list))
 501                 return 0;
 502
 503         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 504 }
 505
 506 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 507                                   u16 fid_begin, u16 fid_end)
 508 {
 509         int fid, err;
 510
 511         for (fid = fid_begin; fid <= fid_end; fid++) {
 512                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 513                 if (err)
 514                         goto err_port_fid_join;
 515         }
 516
 517         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 518                                         true, false);
 519         if (err)
 520                 goto err_port_flood_set;
 521
 522         for (fid = fid_begin; fid <= fid_end; fid++) {
 523                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 524                 if (err)
 525                         goto err_port_fid_map;
 526         }
 527
 528         return 0;
 529
 530 err_port_fid_map:
 531         for (fid--; fid >= fid_begin; fid--)
 532                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 533         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 534                                   false);
 535 err_port_flood_set:
 536         fid = fid_end;
 537 err_port_fid_join:
 538         for (fid--; fid >= fid_begin; fid--)
 539                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 540         return err;
 541 }
 542
 543 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 544                                     u16 fid_begin, u16 fid_end)
 545 {
 546         int fid;
 547
 548         for (fid = fid_begin; fid <= fid_end; fid++)
 549                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 550
 551         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 552                                   false);
 553
 554         for (fid = fid_begin; fid <= fid_end; fid++)
 555                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 556 }
 557
 558 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 559                                     u16 vid)
 560 {
 561         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 562         char spvid_pl[MLXSW_REG_SPVID_LEN];
 563
 564         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 565         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 566 }
 567
 568 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 569                                             bool allow)
 570 {
 571         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 572         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 573
 574         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 575         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 576 }
 577
 578 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 579 {
 580         struct net_device *dev = mlxsw_sp_port->dev;
 581         int err;
 582
 583         if (!vid) {
 584                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 585                 if (err) {
 586                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 587                         return err;
 588                 }
 589         } else {
 590                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 591                 if (err) {
 592                         netdev_err(dev, "Failed to set PVID\n");
 593                         return err;
 594                 }
 595
 596                 /* Only allow if not already allowed. */
 597                 if (!mlxsw_sp_port->pvid) {
 598                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 599                                                                true);
 600                         if (err) {
 601                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 602                                 goto err_port_allow_untagged_set;
 603                         }
 604                 }
 605         }
 606
 607         mlxsw_sp_port->pvid = vid;
 608         return 0;
 609
 610 err_port_allow_untagged_set:
 611         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 612         return err;
 613 }
 614
 615 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 616                                      u16 vid_begin, u16 vid_end, bool is_member,
 617                                      bool untagged)
 618 {
 619         u16 vid, vid_e;
 620         int err;
 621
 622         for (vid = vid_begin; vid <= vid_end;
 623              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 624                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 625                             vid_end);
 626
 627                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 628                                              is_member, untagged);
 629                 if (err)
 630                         return err;
 631         }
 632
 633         return 0;
 634 }
 635
 636 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 637                                      u16 vid_begin, u16 vid_end,
 638                                      bool flag_untagged, bool flag_pvid)
 639 {
 640         struct net_device *dev = mlxsw_sp_port->dev;
 641         u16 vid, old_pvid;
 642         int err;
 643
 644         if (!mlxsw_sp_port->bridged)
 645                 return -EINVAL;
 646
 647         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 648         if (err) {
 649                 netdev_err(dev, "Failed to join FIDs\n");
 650                 return err;
 651         }
 652
 653         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 654                                         true, flag_untagged);
 655         if (err) {
 656                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 657                            vid_end);
 658                 goto err_port_vlans_set;
 659         }
 660
 661         old_pvid = mlxsw_sp_port->pvid;
 662         if (flag_pvid && old_pvid != vid_begin) {
 663                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 664                 if (err) {
 665                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 666                         goto err_port_pvid_set;
 667                 }
 668         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 669                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 670                 if (err) {
 671                         netdev_err(dev, "Unable to del PVID\n");
 672                         goto err_port_pvid_set;
 673                 }
 674         }
 675
 676         /* Changing activity bits only if HW operation succeded */
 677         for (vid = vid_begin; vid <= vid_end; vid++) {
 678                 set_bit(vid, mlxsw_sp_port->active_vlans);
 679                 if (flag_untagged)
 680                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 681                 else
 682                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 683         }
 684
 685         /* STP state change must be done after we set active VLANs */
 686         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 687                                           mlxsw_sp_port->stp_state);
 688         if (err) {
 689                 netdev_err(dev, "Failed to set STP state\n");
 690                 goto err_port_stp_state_set;
 691         }
 692
 693         return 0;
 694
 695 err_port_stp_state_set:
 696         for (vid = vid_begin; vid <= vid_end; vid++)
 697                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 698         if (old_pvid != mlxsw_sp_port->pvid)
 699                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 700 err_port_pvid_set:
 701         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 702                                   false);
 703 err_port_vlans_set:
 704         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 705         return err;
 706 }
 707
 708 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 709                                    const struct switchdev_obj_port_vlan *vlan,
 710                                    struct switchdev_trans *trans)
 711 {
 712         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 713         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 714
 715         if (switchdev_trans_ph_prepare(trans))
 716                 return 0;
 717
 718         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 719                                          vlan->vid_begin, vlan->vid_end,
 720                                          flag_untagged, flag_pvid);
 721 }
 722
 723 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 724 {
 725         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 726                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 727 }
 728
 729 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 730 {
 731         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 732                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 733 }
 734
 735 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 736                                      const char *mac, u16 fid, bool adding,
 737                                      enum mlxsw_reg_sfd_rec_action action,
 738                                      bool dynamic)
 739 {
 740         char *sfd_pl;
 741         int err;
 742
 743         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 744         if (!sfd_pl)
 745                 return -ENOMEM;
 746
 747         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 748         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 749                               mac, fid, action, local_port);
 750         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 751         kfree(sfd_pl);
 752
 753         return err;
 754 }
 755
 756 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 757                                    const char *mac, u16 fid, bool adding,
 758                                    bool dynamic)
 759 {
 760         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
 761                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
 762 }
 763
 764 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
 765                         bool adding)
 766 {
 767         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
 768                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
 769                                          false);
 770 }
 771
 772 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 773                                        const char *mac, u16 fid, u16 lag_vid,
 774                                        bool adding, bool dynamic)
 775 {
 776         char *sfd_pl;
 777         int err;
 778
 779         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 780         if (!sfd_pl)
 781                 return -ENOMEM;
 782
 783         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 784         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 785                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 786                                   lag_vid, lag_id);
 787         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 788         kfree(sfd_pl);
 789
 790         return err;
 791 }
 792
 793 static int
 794 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 795                              const struct switchdev_obj_port_fdb *fdb,
 796                              struct switchdev_trans *trans)
 797 {
 798         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 799         u16 lag_vid = 0;
 800
 801         if (switchdev_trans_ph_prepare(trans))
 802                 return 0;
 803
 804         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 805                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 806         }
 807
 808         if (!mlxsw_sp_port->lagged)
 809                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 810                                                mlxsw_sp_port->local_port,
 811                                                fdb->addr, fid, true, false);
 812         else
 813                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 814                                                    mlxsw_sp_port->lag_id,
 815                                                    fdb->addr, fid, lag_vid,
 816                                                    true, false);
 817 }
 818
 819 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 820                                 u16 fid, u16 mid, bool adding)
 821 {
 822         char *sfd_pl;
 823         int err;
 824
 825         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 826         if (!sfd_pl)
 827                 return -ENOMEM;
 828
 829         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 830         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 831                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 832         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 833         kfree(sfd_pl);
 834         return err;
 835 }
 836
 837 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 838                                   bool add, bool clear_all_ports)
 839 {
 840         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 841         char *smid_pl;
 842         int err, i;
 843
 844         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 845         if (!smid_pl)
 846                 return -ENOMEM;
 847
 848         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 849         if (clear_all_ports) {
 850                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 851                         if (mlxsw_sp->ports[i])
 852                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 853         }
 854         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 855         kfree(smid_pl);
 856         return err;
 857 }
 858
 859 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 860                                               const unsigned char *addr,
 861                                               u16 vid)
 862 {
 863         struct mlxsw_sp_mid *mid;
 864
 865         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 866                 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
 867                         return mid;
 868         }
 869         return NULL;
 870 }
 871
 872 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 873                                                 const unsigned char *addr,
 874                                                 u16 vid)
 875 {
 876         struct mlxsw_sp_mid *mid;
 877         u16 mid_idx;
 878
 879         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 880                                       MLXSW_SP_MID_MAX);
 881         if (mid_idx == MLXSW_SP_MID_MAX)
 882                 return NULL;
 883
 884         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 885         if (!mid)
 886                 return NULL;
 887
 888         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 889         ether_addr_copy(mid->addr, addr);
 890         mid->vid = vid;
 891         mid->mid = mid_idx;
 892         mid->ref_count = 0;
 893         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 894
 895         return mid;
 896 }
 897
 898 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 899                                  struct mlxsw_sp_mid *mid)
 900 {
 901         if (--mid->ref_count == 0) {
 902                 list_del(&mid->list);
 903                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 904                 kfree(mid);
 905                 return 1;
 906         }
 907         return 0;
 908 }
 909
 910 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 911                                  const struct switchdev_obj_port_mdb *mdb,
 912                                  struct switchdev_trans *trans)
 913 {
 914         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 915         struct net_device *dev = mlxsw_sp_port->dev;
 916         struct mlxsw_sp_mid *mid;
 917         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
 918         int err = 0;
 919
 920         if (switchdev_trans_ph_prepare(trans))
 921                 return 0;
 922
 923         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
 924         if (!mid) {
 925                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
 926                 if (!mid) {
 927                         netdev_err(dev, "Unable to allocate MC group\n");
 928                         return -ENOMEM;
 929                 }
 930         }
 931         mid->ref_count++;
 932
 933         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
 934                                      mid->ref_count == 1);
 935         if (err) {
 936                 netdev_err(dev, "Unable to set SMID\n");
 937                 goto err_out;
 938         }
 939
 940         if (mid->ref_count == 1) {
 941                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
 942                                            true);
 943                 if (err) {
 944                         netdev_err(dev, "Unable to set MC SFD\n");
 945                         goto err_out;
 946                 }
 947         }
 948
 949         return 0;
 950
 951 err_out:
 952         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
 953         return err;
 954 }
 955
 956 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 957                                  const struct switchdev_obj *obj,
 958                                  struct switchdev_trans *trans)
 959 {
 960         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 961         int err = 0;
 962
 963         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 964         if (!mlxsw_sp_port)
 965                 return -EINVAL;
 966
 967         switch (obj->id) {
 968         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 969                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 970                         return 0;
 971
 972                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 973                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 974                                               trans);
 975                 break;
 976         case SWITCHDEV_OBJ_ID_IPV4_FIB:
 977                 err = mlxsw_sp_router_fib4_add(mlxsw_sp_port,
 978                                                SWITCHDEV_OBJ_IPV4_FIB(obj),
 979                                                trans);
 980                 break;
 981         case SWITCHDEV_OBJ_ID_PORT_FDB:
 982                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 983                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 984                                                    trans);
 985                 break;
 986         case SWITCHDEV_OBJ_ID_PORT_MDB:
 987                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
 988                                             SWITCHDEV_OBJ_PORT_MDB(obj),
 989                                             trans);
 990                 break;
 991         default:
 992                 err = -EOPNOTSUPP;
 993                 break;
 994         }
 995
 996         return err;
 997 }
 998
 999 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1000                                      u16 vid_begin, u16 vid_end, bool init)
1001 {
1002         struct net_device *dev = mlxsw_sp_port->dev;
1003         u16 vid, pvid;
1004         int err;
1005
1006         if (!init && !mlxsw_sp_port->bridged)
1007                 return -EINVAL;
1008
1009         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
1010                                         false, false);
1011         if (err) {
1012                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
1013                            vid_end);
1014                 return err;
1015         }
1016
1017         if (init)
1018                 goto out;
1019
1020         pvid = mlxsw_sp_port->pvid;
1021         if (pvid >= vid_begin && pvid <= vid_end) {
1022                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1023                 if (err) {
1024                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
1025                         return err;
1026                 }
1027         }
1028
1029         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1030
1031 out:
1032         /* Changing activity bits only if HW operation succeded */
1033         for (vid = vid_begin; vid <= vid_end; vid++)
1034                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1035
1036         return 0;
1037 }
1038
1039 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1040                                    const struct switchdev_obj_port_vlan *vlan)
1041 {
1042         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1043                                          vlan->vid_begin, vlan->vid_end, false);
1044 }
1045
1046 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1047 {
1048         u16 vid;
1049
1050         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1051                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
1052 }
1053
1054 static int
1055 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1056                              const struct switchdev_obj_port_fdb *fdb)
1057 {
1058         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1059         u16 lag_vid = 0;
1060
1061         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1062                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1063         }
1064
1065         if (!mlxsw_sp_port->lagged)
1066                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1067                                                mlxsw_sp_port->local_port,
1068                                                fdb->addr, fid,
1069                                                false, false);
1070         else
1071                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1072                                                    mlxsw_sp_port->lag_id,
1073                                                    fdb->addr, fid, lag_vid,
1074                                                    false, false);
1075 }
1076
1077 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1078                                  const struct switchdev_obj_port_mdb *mdb)
1079 {
1080         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1081         struct net_device *dev = mlxsw_sp_port->dev;
1082         struct mlxsw_sp_mid *mid;
1083         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1084         u16 mid_idx;
1085         int err = 0;
1086
1087         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
1088         if (!mid) {
1089                 netdev_err(dev, "Unable to remove port from MC DB\n");
1090                 return -EINVAL;
1091         }
1092
1093         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1094         if (err)
1095                 netdev_err(dev, "Unable to remove port from SMID\n");
1096
1097         mid_idx = mid->mid;
1098         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1099                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1100                                            false);
1101                 if (err)
1102                         netdev_err(dev, "Unable to remove MC SFD\n");
1103         }
1104
1105         return err;
1106 }
1107
1108 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1109                                  const struct switchdev_obj *obj)
1110 {
1111         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1112         int err = 0;
1113
1114         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1115         if (!mlxsw_sp_port)
1116                 return -EINVAL;
1117
1118         switch (obj->id) {
1119         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1120                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1121                         return 0;
1122
1123                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1124                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1125                 break;
1126         case SWITCHDEV_OBJ_ID_IPV4_FIB:
1127                 err = mlxsw_sp_router_fib4_del(mlxsw_sp_port,
1128                                                SWITCHDEV_OBJ_IPV4_FIB(obj));
1129                 break;
1130         case SWITCHDEV_OBJ_ID_PORT_FDB:
1131                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1132                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1133                 break;
1134         case SWITCHDEV_OBJ_ID_PORT_MDB:
1135                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1136                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1137                 break;
1138         default:
1139                 err = -EOPNOTSUPP;
1140                 break;
1141         }
1142
1143         return err;
1144 }
1145
1146 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1147                                                    u16 lag_id)
1148 {
1149         struct mlxsw_sp_port *mlxsw_sp_port;
1150         int i;
1151
1152         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
1153                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1154                 if (mlxsw_sp_port)
1155                         return mlxsw_sp_port;
1156         }
1157         return NULL;
1158 }
1159
1160 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1161                                   struct switchdev_obj_port_fdb *fdb,
1162                                   switchdev_obj_dump_cb_t *cb,
1163                                   struct net_device *orig_dev)
1164 {
1165         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1166         struct mlxsw_sp_port *tmp;
1167         struct mlxsw_sp_fid *f;
1168         u16 vport_fid;
1169         char *sfd_pl;
1170         char mac[ETH_ALEN];
1171         u16 fid;
1172         u8 local_port;
1173         u16 lag_id;
1174         u8 num_rec;
1175         int stored_err = 0;
1176         int i;
1177         int err;
1178
1179         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1180         if (!sfd_pl)
1181                 return -ENOMEM;
1182
1183         f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1184         vport_fid = f ? f->fid : 0;
1185
1186         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1187         do {
1188                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1189                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1190                 if (err)
1191                         goto out;
1192
1193                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1194
1195                 /* Even in case of error, we have to run the dump to the end
1196                  * so the session in firmware is finished.
1197                  */
1198                 if (stored_err)
1199                         continue;
1200
1201                 for (i = 0; i < num_rec; i++) {
1202                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1203                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1204                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1205                                                         &local_port);
1206                                 if (local_port == mlxsw_sp_port->local_port) {
1207                                         if (vport_fid && vport_fid == fid)
1208                                                 fdb->vid = 0;
1209                                         else if (!vport_fid &&
1210                                                  !mlxsw_sp_fid_is_vfid(fid))
1211                                                 fdb->vid = fid;
1212                                         else
1213                                                 continue;
1214                                         ether_addr_copy(fdb->addr, mac);
1215                                         fdb->ndm_state = NUD_REACHABLE;
1216                                         err = cb(&fdb->obj);
1217                                         if (err)
1218                                                 stored_err = err;
1219                                 }
1220                                 break;
1221                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1222                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1223                                                             mac, &fid, &lag_id);
1224                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1225                                 if (tmp && tmp->local_port ==
1226                                     mlxsw_sp_port->local_port) {
1227                                         /* LAG records can only point to LAG
1228                                          * devices or VLAN devices on top.
1229                                          */
1230                                         if (!netif_is_lag_master(orig_dev) &&
1231                                             !is_vlan_dev(orig_dev))
1232                                                 continue;
1233                                         if (vport_fid && vport_fid == fid)
1234                                                 fdb->vid = 0;
1235                                         else if (!vport_fid &&
1236                                                  !mlxsw_sp_fid_is_vfid(fid))
1237                                                 fdb->vid = fid;
1238                                         else
1239                                                 continue;
1240                                         ether_addr_copy(fdb->addr, mac);
1241                                         fdb->ndm_state = NUD_REACHABLE;
1242                                         err = cb(&fdb->obj);
1243                                         if (err)
1244                                                 stored_err = err;
1245                                 }
1246                                 break;
1247                         }
1248                 }
1249         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1250
1251 out:
1252         kfree(sfd_pl);
1253         return stored_err ? stored_err : err;
1254 }
1255
1256 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1257                                    struct switchdev_obj_port_vlan *vlan,
1258                                    switchdev_obj_dump_cb_t *cb)
1259 {
1260         u16 vid;
1261         int err = 0;
1262
1263         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1264                 vlan->flags = 0;
1265                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1266                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1267                 return cb(&vlan->obj);
1268         }
1269
1270         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1271                 vlan->flags = 0;
1272                 if (vid == mlxsw_sp_port->pvid)
1273                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1274                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1275                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1276                 vlan->vid_begin = vid;
1277                 vlan->vid_end = vid;
1278                 err = cb(&vlan->obj);
1279                 if (err)
1280                         break;
1281         }
1282         return err;
1283 }
1284
1285 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1286                                   struct switchdev_obj *obj,
1287                                   switchdev_obj_dump_cb_t *cb)
1288 {
1289         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1290         int err = 0;
1291
1292         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1293         if (!mlxsw_sp_port)
1294                 return -EINVAL;
1295
1296         switch (obj->id) {
1297         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1298                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1299                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1300                 break;
1301         case SWITCHDEV_OBJ_ID_PORT_FDB:
1302                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1303                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1304                                              obj->orig_dev);
1305                 break;
1306         default:
1307                 err = -EOPNOTSUPP;
1308                 break;
1309         }
1310
1311         return err;
1312 }
1313
1314 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1315         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1316         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1317         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1318         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1319         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1320 };
1321
1322 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1323                                         char *mac, u16 vid,
1324                                         struct net_device *dev)
1325 {
1326         struct switchdev_notifier_fdb_info info;
1327         unsigned long notifier_type;
1328
1329         if (learning_sync) {
1330                 info.addr = mac;
1331                 info.vid = vid;
1332                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1333                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1334         }
1335 }
1336
1337 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1338                                             char *sfn_pl, int rec_index,
1339                                             bool adding)
1340 {
1341         struct mlxsw_sp_port *mlxsw_sp_port;
1342         char mac[ETH_ALEN];
1343         u8 local_port;
1344         u16 vid, fid;
1345         bool do_notification = true;
1346         int err;
1347
1348         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1349         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1350         if (!mlxsw_sp_port) {
1351                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1352                 goto just_remove;
1353         }
1354
1355         if (mlxsw_sp_fid_is_vfid(fid)) {
1356                 struct mlxsw_sp_port *mlxsw_sp_vport;
1357
1358                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1359                                                                  fid);
1360                 if (!mlxsw_sp_vport) {
1361                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1362                         goto just_remove;
1363                 }
1364                 vid = 0;
1365                 /* Override the physical port with the vPort. */
1366                 mlxsw_sp_port = mlxsw_sp_vport;
1367         } else {
1368                 vid = fid;
1369         }
1370
1371         adding = adding && mlxsw_sp_port->learning;
1372
1373 do_fdb_op:
1374         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1375                                       adding, true);
1376         if (err) {
1377                 if (net_ratelimit())
1378                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1379                 return;
1380         }
1381
1382         if (!do_notification)
1383                 return;
1384         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1385                                     adding, mac, vid, mlxsw_sp_port->dev);
1386         return;
1387
1388 just_remove:
1389         adding = false;
1390         do_notification = false;
1391         goto do_fdb_op;
1392 }
1393
1394 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1395                                                 char *sfn_pl, int rec_index,
1396                                                 bool adding)
1397 {
1398         struct mlxsw_sp_port *mlxsw_sp_port;
1399         struct net_device *dev;
1400         char mac[ETH_ALEN];
1401         u16 lag_vid = 0;
1402         u16 lag_id;
1403         u16 vid, fid;
1404         bool do_notification = true;
1405         int err;
1406
1407         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1408         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1409         if (!mlxsw_sp_port) {
1410                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1411                 goto just_remove;
1412         }
1413
1414         if (mlxsw_sp_fid_is_vfid(fid)) {
1415                 struct mlxsw_sp_port *mlxsw_sp_vport;
1416
1417                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1418                                                                  fid);
1419                 if (!mlxsw_sp_vport) {
1420                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1421                         goto just_remove;
1422                 }
1423
1424                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1425                 dev = mlxsw_sp_vport->dev;
1426                 vid = 0;
1427                 /* Override the physical port with the vPort. */
1428                 mlxsw_sp_port = mlxsw_sp_vport;
1429         } else {
1430                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1431                 vid = fid;
1432         }
1433
1434         adding = adding && mlxsw_sp_port->learning;
1435
1436 do_fdb_op:
1437         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1438                                           adding, true);
1439         if (err) {
1440                 if (net_ratelimit())
1441                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1442                 return;
1443         }
1444
1445         if (!do_notification)
1446                 return;
1447         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1448                                     vid, dev);
1449         return;
1450
1451 just_remove:
1452         adding = false;
1453         do_notification = false;
1454         goto do_fdb_op;
1455 }
1456
1457 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1458                                             char *sfn_pl, int rec_index)
1459 {
1460         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1461         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1462                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1463                                                 rec_index, true);
1464                 break;
1465         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1466                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1467                                                 rec_index, false);
1468                 break;
1469         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1470                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1471                                                     rec_index, true);
1472                 break;
1473         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1474                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1475                                                     rec_index, false);
1476                 break;
1477         }
1478 }
1479
1480 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1481 {
1482         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1483                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1484 }
1485
1486 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1487 {
1488         struct mlxsw_sp *mlxsw_sp;
1489         char *sfn_pl;
1490         u8 num_rec;
1491         int i;
1492         int err;
1493
1494         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1495         if (!sfn_pl)
1496                 return;
1497
1498         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1499
1500         rtnl_lock();
1501         do {
1502                 mlxsw_reg_sfn_pack(sfn_pl);
1503                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1504                 if (err) {
1505                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1506                         break;
1507                 }
1508                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1509                 for (i = 0; i < num_rec; i++)
1510                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1511
1512         } while (num_rec);
1513         rtnl_unlock();
1514
1515         kfree(sfn_pl);
1516         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1517 }
1518
1519 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1520 {
1521         int err;
1522
1523         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1524         if (err) {
1525                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1526                 return err;
1527         }
1528         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1529         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1530         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1531         return 0;
1532 }
1533
1534 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1535 {
1536         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1537 }
1538
1539 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1540 {
1541         return mlxsw_sp_fdb_init(mlxsw_sp);
1542 }
1543
1544 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1545 {
1546         mlxsw_sp_fdb_fini(mlxsw_sp);
1547 }
1548
1549 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
1550 {
1551         struct net_device *dev = mlxsw_sp_port->dev;
1552         int err;
1553
1554         /* Allow only untagged packets to ingress and tag them internally
1555          * with VID 1.
1556          */
1557         mlxsw_sp_port->pvid = 1;
1558         err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
1559                                         true);
1560         if (err) {
1561                 netdev_err(dev, "Unable to init VLANs\n");
1562                 return err;
1563         }
1564
1565         /* Add implicit VLAN interface in the device, so that untagged
1566          * packets will be classified to the default vFID.
1567          */
1568         err = mlxsw_sp_port_add_vid(dev, 0, 1);
1569         if (err)
1570                 netdev_err(dev, "Failed to configure default vFID\n");
1571
1572         return err;
1573 }
1574
1575 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1576 {
1577         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1578 }
1579
1580 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1581 {
1582 }