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         u16 fid = vid;
  59
  60         if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
  61                 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
  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 bool mlxsw_sp_vfid_is_vport_br(u16 vfid)
 170 {
 171         return vfid >= MLXSW_SP_VFID_PORT_MAX;
 172 }
 173
 174 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 175                                      u16 idx_begin, u16 idx_end, bool set,
 176                                      bool only_uc)
 177 {
 178         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 179         u16 local_port = mlxsw_sp_port->local_port;
 180         enum mlxsw_flood_table_type table_type;
 181         u16 range = idx_end - idx_begin + 1;
 182         char *sftr_pl;
 183         int err;
 184
 185         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 186                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
 187                 if (mlxsw_sp_vfid_is_vport_br(idx_begin))
 188                         local_port = mlxsw_sp_port->local_port;
 189                 else
 190                         local_port = MLXSW_PORT_CPU_PORT;
 191         } else {
 192                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
 193         }
 194
 195         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 196         if (!sftr_pl)
 197                 return -ENOMEM;
 198
 199         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 200                             table_type, range, local_port, set);
 201         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 202         if (err)
 203                 goto buffer_out;
 204
 205         /* Flooding control allows one to decide whether a given port will
 206          * flood unicast traffic for which there is no FDB entry.
 207          */
 208         if (only_uc)
 209                 goto buffer_out;
 210
 211         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
 212                             table_type, range, local_port, set);
 213         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 214         if (err)
 215                 goto err_flood_bm_set;
 216         else
 217                 goto buffer_out;
 218
 219 err_flood_bm_set:
 220         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 221                             table_type, range, local_port, !set);
 222         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 223 buffer_out:
 224         kfree(sftr_pl);
 225         return err;
 226 }
 227
 228 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 229                                       bool set)
 230 {
 231         struct net_device *dev = mlxsw_sp_port->dev;
 232         u16 vid, last_visited_vid;
 233         int err;
 234
 235         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 236                 u16 vfid, fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
 237
 238                 vfid = mlxsw_sp_fid_to_vfid(fid);
 239                 return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 240                                                   set, true);
 241         }
 242
 243         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 244                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 245                                                 true);
 246                 if (err) {
 247                         last_visited_vid = vid;
 248                         goto err_port_flood_set;
 249                 }
 250         }
 251
 252         return 0;
 253
 254 err_port_flood_set:
 255         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 256                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 257         netdev_err(dev, "Failed to configure unicast flooding\n");
 258         return err;
 259 }
 260
 261 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 262                              bool set)
 263 {
 264         u16 vfid;
 265
 266         /* In case of vFIDs, index into the flooding table is relative to
 267          * the start of the vFIDs range.
 268          */
 269         vfid = mlxsw_sp_fid_to_vfid(fid);
 270         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
 271                                          false);
 272 }
 273
 274 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 275                                            struct switchdev_trans *trans,
 276                                            unsigned long brport_flags)
 277 {
 278         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 279         bool set;
 280         int err;
 281
 282         if (!mlxsw_sp_port->bridged)
 283                 return -EINVAL;
 284
 285         if (switchdev_trans_ph_prepare(trans))
 286                 return 0;
 287
 288         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 289                 set = mlxsw_sp_port->uc_flood ? false : true;
 290                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
 291                 if (err)
 292                         return err;
 293         }
 294
 295         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 296         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 297         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 298
 299         return 0;
 300 }
 301
 302 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 303 {
 304         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 305         int err;
 306
 307         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 308         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 309         if (err)
 310                 return err;
 311         mlxsw_sp->ageing_time = ageing_time;
 312         return 0;
 313 }
 314
 315 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 316                                             struct switchdev_trans *trans,
 317                                             unsigned long ageing_clock_t)
 318 {
 319         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 320         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 321         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 322
 323         if (switchdev_trans_ph_prepare(trans)) {
 324                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 325                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 326                         return -ERANGE;
 327                 else
 328                         return 0;
 329         }
 330
 331         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 332 }
 333
 334 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 335                                           struct switchdev_trans *trans,
 336                                           struct net_device *orig_dev,
 337                                           bool vlan_enabled)
 338 {
 339         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 340
 341         /* SWITCHDEV_TRANS_PREPARE phase */
 342         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 343                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 344                 return -EINVAL;
 345         }
 346
 347         return 0;
 348 }
 349
 350 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 351                                   const struct switchdev_attr *attr,
 352                                   struct switchdev_trans *trans)
 353 {
 354         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 355         int err = 0;
 356
 357         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 358         if (!mlxsw_sp_port)
 359                 return -EINVAL;
 360
 361         switch (attr->id) {
 362         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 363                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 364                                                        attr->u.stp_state);
 365                 break;
 366         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 367                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 368                                                       attr->u.brport_flags);
 369                 break;
 370         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 371                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 372                                                        attr->u.ageing_time);
 373                 break;
 374         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 375                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 376                                                      attr->orig_dev,
 377                                                      attr->u.vlan_filtering);
 378                 break;
 379         default:
 380                 err = -EOPNOTSUPP;
 381                 break;
 382         }
 383
 384         return err;
 385 }
 386
 387 static struct mlxsw_sp_fid *mlxsw_sp_fid_find(struct mlxsw_sp *mlxsw_sp,
 388                                               u16 fid)
 389 {
 390         struct mlxsw_sp_fid *f;
 391
 392         list_for_each_entry(f, &mlxsw_sp->fids, list)
 393                 if (f->fid == fid)
 394                         return f;
 395
 396         return NULL;
 397 }
 398
 399 static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 400 {
 401         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 402
 403         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
 404         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 405 }
 406
 407 static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
 408 {
 409         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 410         char svfa_pl[MLXSW_REG_SVFA_LEN];
 411
 412         mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
 413         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 414 }
 415
 416 static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
 417 {
 418         struct mlxsw_sp_fid *f;
 419
 420         f = kzalloc(sizeof(*f), GFP_KERNEL);
 421         if (!f)
 422                 return NULL;
 423
 424         f->fid = fid;
 425
 426         return f;
 427 }
 428
 429 static struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp,
 430                                                 u16 fid)
 431 {
 432         struct mlxsw_sp_fid *f;
 433         int err;
 434
 435         err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
 436         if (err)
 437                 return ERR_PTR(err);
 438
 439         /* Although all the ports member in the FID might be using a
 440          * {Port, VID} to FID mapping, we create a global VID-to-FID
 441          * mapping. This allows a port to transition to VLAN mode,
 442          * knowing the global mapping exists.
 443          */
 444         err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
 445         if (err)
 446                 goto err_fid_map;
 447
 448         f = mlxsw_sp_fid_alloc(fid);
 449         if (!f) {
 450                 err = -ENOMEM;
 451                 goto err_allocate_fid;
 452         }
 453
 454         list_add(&f->list, &mlxsw_sp->fids);
 455
 456         return f;
 457
 458 err_allocate_fid:
 459         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 460 err_fid_map:
 461         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 462         return ERR_PTR(err);
 463 }
 464
 465 static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp,
 466                                  struct mlxsw_sp_fid *f)
 467 {
 468         u16 fid = f->fid;
 469
 470         list_del(&f->list);
 471
 472         kfree(f);
 473
 474         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 475 }
 476
 477 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 478                                     u16 fid)
 479 {
 480         struct mlxsw_sp_fid *f;
 481
 482         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 483         if (!f) {
 484                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 485                 if (IS_ERR(f))
 486                         return PTR_ERR(f);
 487         }
 488
 489         f->ref_count++;
 490
 491         return 0;
 492 }
 493
 494 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 495                                       u16 fid)
 496 {
 497         struct mlxsw_sp_fid *f;
 498
 499         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 500         if (WARN_ON(!f))
 501                 return;
 502
 503         if (--f->ref_count == 0)
 504                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 505 }
 506
 507 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 508                                  bool valid)
 509 {
 510         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 511
 512         /* If port doesn't have vPorts, then it can use the global
 513          * VID-to-FID mapping.
 514          */
 515         if (list_empty(&mlxsw_sp_port->vports_list))
 516                 return 0;
 517
 518         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 519 }
 520
 521 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 522                                   u16 fid_begin, u16 fid_end)
 523 {
 524         int fid, err;
 525
 526         for (fid = fid_begin; fid <= fid_end; fid++) {
 527                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 528                 if (err)
 529                         goto err_port_fid_join;
 530         }
 531
 532         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 533                                         true, false);
 534         if (err)
 535                 goto err_port_flood_set;
 536
 537         for (fid = fid_begin; fid <= fid_end; fid++) {
 538                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 539                 if (err)
 540                         goto err_port_fid_map;
 541         }
 542
 543         return 0;
 544
 545 err_port_fid_map:
 546         for (fid--; fid >= fid_begin; fid--)
 547                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 548         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 549                                   false);
 550 err_port_flood_set:
 551         fid = fid_end;
 552 err_port_fid_join:
 553         for (fid--; fid >= fid_begin; fid--)
 554                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 555         return err;
 556 }
 557
 558 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 559                                     u16 fid_begin, u16 fid_end)
 560 {
 561         int fid;
 562
 563         for (fid = fid_begin; fid <= fid_end; fid++)
 564                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 565
 566         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 567                                   false);
 568
 569         for (fid = fid_begin; fid <= fid_end; fid++)
 570                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 571 }
 572
 573 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 574                                     u16 vid)
 575 {
 576         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 577         char spvid_pl[MLXSW_REG_SPVID_LEN];
 578
 579         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 580         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 581 }
 582
 583 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 584                                             bool allow)
 585 {
 586         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 587         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 588
 589         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 590         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 591 }
 592
 593 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 594 {
 595         struct net_device *dev = mlxsw_sp_port->dev;
 596         int err;
 597
 598         if (!vid) {
 599                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 600                 if (err) {
 601                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 602                         return err;
 603                 }
 604         } else {
 605                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 606                 if (err) {
 607                         netdev_err(dev, "Failed to set PVID\n");
 608                         return err;
 609                 }
 610
 611                 /* Only allow if not already allowed. */
 612                 if (!mlxsw_sp_port->pvid) {
 613                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 614                                                                true);
 615                         if (err) {
 616                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 617                                 goto err_port_allow_untagged_set;
 618                         }
 619                 }
 620         }
 621
 622         mlxsw_sp_port->pvid = vid;
 623         return 0;
 624
 625 err_port_allow_untagged_set:
 626         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 627         return err;
 628 }
 629
 630 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
 631                                   u16 vid_end)
 632 {
 633         u16 vid;
 634         int err;
 635
 636         for (vid = vid_begin; vid <= vid_end; vid++) {
 637                 err = mlxsw_sp_port_add_vid(dev, 0, vid);
 638                 if (err)
 639                         goto err_port_add_vid;
 640         }
 641         return 0;
 642
 643 err_port_add_vid:
 644         for (vid--; vid >= vid_begin; vid--)
 645                 mlxsw_sp_port_kill_vid(dev, 0, vid);
 646         return err;
 647 }
 648
 649 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 650                                      u16 vid_begin, u16 vid_end, bool is_member,
 651                                      bool untagged)
 652 {
 653         u16 vid, vid_e;
 654         int err;
 655
 656         for (vid = vid_begin; vid <= vid_end;
 657              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 658                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 659                             vid_end);
 660
 661                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 662                                              is_member, untagged);
 663                 if (err)
 664                         return err;
 665         }
 666
 667         return 0;
 668 }
 669
 670 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 671                                      u16 vid_begin, u16 vid_end,
 672                                      bool flag_untagged, bool flag_pvid)
 673 {
 674         struct net_device *dev = mlxsw_sp_port->dev;
 675         u16 vid, old_pvid;
 676         int err;
 677
 678         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 679          * not bridged, then packets ingressing through the port with
 680          * the specified VIDs will be directed to CPU.
 681          */
 682         if (!mlxsw_sp_port->bridged)
 683                 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
 684
 685         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 686         if (err) {
 687                 netdev_err(dev, "Failed to join FIDs\n");
 688                 return err;
 689         }
 690
 691         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 692                                         true, flag_untagged);
 693         if (err) {
 694                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 695                            vid_end);
 696                 goto err_port_vlans_set;
 697         }
 698
 699         old_pvid = mlxsw_sp_port->pvid;
 700         if (flag_pvid && old_pvid != vid_begin) {
 701                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 702                 if (err) {
 703                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 704                         goto err_port_pvid_set;
 705                 }
 706         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 707                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 708                 if (err) {
 709                         netdev_err(dev, "Unable to del PVID\n");
 710                         goto err_port_pvid_set;
 711                 }
 712         }
 713
 714         /* Changing activity bits only if HW operation succeded */
 715         for (vid = vid_begin; vid <= vid_end; vid++) {
 716                 set_bit(vid, mlxsw_sp_port->active_vlans);
 717                 if (flag_untagged)
 718                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 719                 else
 720                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 721         }
 722
 723         /* STP state change must be done after we set active VLANs */
 724         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 725                                           mlxsw_sp_port->stp_state);
 726         if (err) {
 727                 netdev_err(dev, "Failed to set STP state\n");
 728                 goto err_port_stp_state_set;
 729         }
 730
 731         return 0;
 732
 733 err_port_stp_state_set:
 734         for (vid = vid_begin; vid <= vid_end; vid++)
 735                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 736         if (old_pvid != mlxsw_sp_port->pvid)
 737                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 738 err_port_pvid_set:
 739         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 740                                   false);
 741 err_port_vlans_set:
 742         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 743         return err;
 744 }
 745
 746 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 747                                    const struct switchdev_obj_port_vlan *vlan,
 748                                    struct switchdev_trans *trans)
 749 {
 750         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 751         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 752
 753         if (switchdev_trans_ph_prepare(trans))
 754                 return 0;
 755
 756         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 757                                          vlan->vid_begin, vlan->vid_end,
 758                                          flag_untagged, flag_pvid);
 759 }
 760
 761 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 762 {
 763         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 764                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 765 }
 766
 767 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 768 {
 769         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 770                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 771 }
 772
 773 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 774                                    const char *mac, u16 fid, bool adding,
 775                                    bool dynamic)
 776 {
 777         char *sfd_pl;
 778         int err;
 779
 780         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 781         if (!sfd_pl)
 782                 return -ENOMEM;
 783
 784         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 785         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 786                               mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 787                               local_port);
 788         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 789         kfree(sfd_pl);
 790
 791         return err;
 792 }
 793
 794 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 795                                        const char *mac, u16 fid, u16 lag_vid,
 796                                        bool adding, bool dynamic)
 797 {
 798         char *sfd_pl;
 799         int err;
 800
 801         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 802         if (!sfd_pl)
 803                 return -ENOMEM;
 804
 805         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 806         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 807                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 808                                   lag_vid, lag_id);
 809         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 810         kfree(sfd_pl);
 811
 812         return err;
 813 }
 814
 815 static int
 816 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 817                              const struct switchdev_obj_port_fdb *fdb,
 818                              struct switchdev_trans *trans)
 819 {
 820         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 821         u16 lag_vid = 0;
 822
 823         if (switchdev_trans_ph_prepare(trans))
 824                 return 0;
 825
 826         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 827                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 828         }
 829
 830         if (!mlxsw_sp_port->lagged)
 831                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 832                                                mlxsw_sp_port->local_port,
 833                                                fdb->addr, fid, true, false);
 834         else
 835                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 836                                                    mlxsw_sp_port->lag_id,
 837                                                    fdb->addr, fid, lag_vid,
 838                                                    true, false);
 839 }
 840
 841 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 842                                 u16 fid, u16 mid, bool adding)
 843 {
 844         char *sfd_pl;
 845         int err;
 846
 847         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 848         if (!sfd_pl)
 849                 return -ENOMEM;
 850
 851         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 852         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 853                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 854         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 855         kfree(sfd_pl);
 856         return err;
 857 }
 858
 859 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 860                                   bool add, bool clear_all_ports)
 861 {
 862         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 863         char *smid_pl;
 864         int err, i;
 865
 866         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 867         if (!smid_pl)
 868                 return -ENOMEM;
 869
 870         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 871         if (clear_all_ports) {
 872                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 873                         if (mlxsw_sp->ports[i])
 874                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 875         }
 876         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 877         kfree(smid_pl);
 878         return err;
 879 }
 880
 881 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 882                                               const unsigned char *addr,
 883                                               u16 vid)
 884 {
 885         struct mlxsw_sp_mid *mid;
 886
 887         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 888                 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
 889                         return mid;
 890         }
 891         return NULL;
 892 }
 893
 894 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 895                                                 const unsigned char *addr,
 896                                                 u16 vid)
 897 {
 898         struct mlxsw_sp_mid *mid;
 899         u16 mid_idx;
 900
 901         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 902                                       MLXSW_SP_MID_MAX);
 903         if (mid_idx == MLXSW_SP_MID_MAX)
 904                 return NULL;
 905
 906         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 907         if (!mid)
 908                 return NULL;
 909
 910         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 911         ether_addr_copy(mid->addr, addr);
 912         mid->vid = vid;
 913         mid->mid = mid_idx;
 914         mid->ref_count = 0;
 915         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 916
 917         return mid;
 918 }
 919
 920 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 921                                  struct mlxsw_sp_mid *mid)
 922 {
 923         if (--mid->ref_count == 0) {
 924                 list_del(&mid->list);
 925                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 926                 kfree(mid);
 927                 return 1;
 928         }
 929         return 0;
 930 }
 931
 932 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 933                                  const struct switchdev_obj_port_mdb *mdb,
 934                                  struct switchdev_trans *trans)
 935 {
 936         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 937         struct net_device *dev = mlxsw_sp_port->dev;
 938         struct mlxsw_sp_mid *mid;
 939         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
 940         int err = 0;
 941
 942         if (switchdev_trans_ph_prepare(trans))
 943                 return 0;
 944
 945         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
 946         if (!mid) {
 947                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
 948                 if (!mid) {
 949                         netdev_err(dev, "Unable to allocate MC group\n");
 950                         return -ENOMEM;
 951                 }
 952         }
 953         mid->ref_count++;
 954
 955         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
 956                                      mid->ref_count == 1);
 957         if (err) {
 958                 netdev_err(dev, "Unable to set SMID\n");
 959                 goto err_out;
 960         }
 961
 962         if (mid->ref_count == 1) {
 963                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
 964                                            true);
 965                 if (err) {
 966                         netdev_err(dev, "Unable to set MC SFD\n");
 967                         goto err_out;
 968                 }
 969         }
 970
 971         return 0;
 972
 973 err_out:
 974         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
 975         return err;
 976 }
 977
 978 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 979                                  const struct switchdev_obj *obj,
 980                                  struct switchdev_trans *trans)
 981 {
 982         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 983         int err = 0;
 984
 985         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
 986         if (!mlxsw_sp_port)
 987                 return -EINVAL;
 988
 989         switch (obj->id) {
 990         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 991                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 992                         return 0;
 993
 994                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 995                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 996                                               trans);
 997                 break;
 998         case SWITCHDEV_OBJ_ID_PORT_FDB:
 999                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
1000                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
1001                                                    trans);
1002                 break;
1003         case SWITCHDEV_OBJ_ID_PORT_MDB:
1004                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
1005                                             SWITCHDEV_OBJ_PORT_MDB(obj),
1006                                             trans);
1007                 break;
1008         default:
1009                 err = -EOPNOTSUPP;
1010                 break;
1011         }
1012
1013         return err;
1014 }
1015
1016 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
1017                                    u16 vid_end)
1018 {
1019         u16 vid;
1020         int err;
1021
1022         for (vid = vid_begin; vid <= vid_end; vid++) {
1023                 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
1024                 if (err)
1025                         return err;
1026         }
1027
1028         return 0;
1029 }
1030
1031 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1032                                      u16 vid_begin, u16 vid_end, bool init)
1033 {
1034         struct net_device *dev = mlxsw_sp_port->dev;
1035         u16 vid, pvid;
1036         int err;
1037
1038         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
1039          * not bridged, then prevent packets ingressing through the
1040          * port with the specified VIDs from being trapped to CPU.
1041          */
1042         if (!init && !mlxsw_sp_port->bridged)
1043                 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
1044
1045         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
1046                                         false, false);
1047         if (err) {
1048                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
1049                            vid_end);
1050                 return err;
1051         }
1052
1053         if (init)
1054                 goto out;
1055
1056         pvid = mlxsw_sp_port->pvid;
1057         if (pvid >= vid_begin && pvid <= vid_end) {
1058                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1059                 if (err) {
1060                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
1061                         return err;
1062                 }
1063         }
1064
1065         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1066
1067 out:
1068         /* Changing activity bits only if HW operation succeded */
1069         for (vid = vid_begin; vid <= vid_end; vid++)
1070                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1071
1072         return 0;
1073 }
1074
1075 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1076                                    const struct switchdev_obj_port_vlan *vlan)
1077 {
1078         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1079                                          vlan->vid_begin, vlan->vid_end, false);
1080 }
1081
1082 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1083 {
1084         u16 vid;
1085
1086         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1087                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
1088 }
1089
1090 static int
1091 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1092                              const struct switchdev_obj_port_fdb *fdb)
1093 {
1094         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1095         u16 lag_vid = 0;
1096
1097         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1098                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1099         }
1100
1101         if (!mlxsw_sp_port->lagged)
1102                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1103                                                mlxsw_sp_port->local_port,
1104                                                fdb->addr, fid,
1105                                                false, false);
1106         else
1107                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1108                                                    mlxsw_sp_port->lag_id,
1109                                                    fdb->addr, fid, lag_vid,
1110                                                    false, false);
1111 }
1112
1113 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1114                                  const struct switchdev_obj_port_mdb *mdb)
1115 {
1116         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1117         struct net_device *dev = mlxsw_sp_port->dev;
1118         struct mlxsw_sp_mid *mid;
1119         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1120         u16 mid_idx;
1121         int err = 0;
1122
1123         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
1124         if (!mid) {
1125                 netdev_err(dev, "Unable to remove port from MC DB\n");
1126                 return -EINVAL;
1127         }
1128
1129         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1130         if (err)
1131                 netdev_err(dev, "Unable to remove port from SMID\n");
1132
1133         mid_idx = mid->mid;
1134         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1135                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1136                                            false);
1137                 if (err)
1138                         netdev_err(dev, "Unable to remove MC SFD\n");
1139         }
1140
1141         return err;
1142 }
1143
1144 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1145                                  const struct switchdev_obj *obj)
1146 {
1147         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1148         int err = 0;
1149
1150         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1151         if (!mlxsw_sp_port)
1152                 return -EINVAL;
1153
1154         switch (obj->id) {
1155         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1156                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1157                         return 0;
1158
1159                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1160                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1161                 break;
1162         case SWITCHDEV_OBJ_ID_PORT_FDB:
1163                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1164                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1165                 break;
1166         case SWITCHDEV_OBJ_ID_PORT_MDB:
1167                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1168                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1169                 break;
1170         default:
1171                 err = -EOPNOTSUPP;
1172                 break;
1173         }
1174
1175         return err;
1176 }
1177
1178 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1179                                                    u16 lag_id)
1180 {
1181         struct mlxsw_sp_port *mlxsw_sp_port;
1182         int i;
1183
1184         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
1185                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1186                 if (mlxsw_sp_port)
1187                         return mlxsw_sp_port;
1188         }
1189         return NULL;
1190 }
1191
1192 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1193                                   struct switchdev_obj_port_fdb *fdb,
1194                                   switchdev_obj_dump_cb_t *cb,
1195                                   struct net_device *orig_dev)
1196 {
1197         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1198         struct mlxsw_sp_port *tmp;
1199         u16 vport_fid = 0;
1200         char *sfd_pl;
1201         char mac[ETH_ALEN];
1202         u16 fid;
1203         u8 local_port;
1204         u16 lag_id;
1205         u8 num_rec;
1206         int stored_err = 0;
1207         int i;
1208         int err;
1209
1210         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1211         if (!sfd_pl)
1212                 return -ENOMEM;
1213
1214         if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1215                 vport_fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1216
1217         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1218         do {
1219                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1220                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1221                 if (err)
1222                         goto out;
1223
1224                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1225
1226                 /* Even in case of error, we have to run the dump to the end
1227                  * so the session in firmware is finished.
1228                  */
1229                 if (stored_err)
1230                         continue;
1231
1232                 for (i = 0; i < num_rec; i++) {
1233                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1234                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1235                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1236                                                         &local_port);
1237                                 if (local_port == mlxsw_sp_port->local_port) {
1238                                         if (vport_fid && vport_fid == fid)
1239                                                 fdb->vid = 0;
1240                                         else if (!vport_fid &&
1241                                                  !mlxsw_sp_fid_is_vfid(fid))
1242                                                 fdb->vid = fid;
1243                                         else
1244                                                 continue;
1245                                         ether_addr_copy(fdb->addr, mac);
1246                                         fdb->ndm_state = NUD_REACHABLE;
1247                                         err = cb(&fdb->obj);
1248                                         if (err)
1249                                                 stored_err = err;
1250                                 }
1251                                 break;
1252                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1253                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1254                                                             mac, &fid, &lag_id);
1255                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1256                                 if (tmp && tmp->local_port ==
1257                                     mlxsw_sp_port->local_port) {
1258                                         /* LAG records can only point to LAG
1259                                          * devices or VLAN devices on top.
1260                                          */
1261                                         if (!netif_is_lag_master(orig_dev) &&
1262                                             !is_vlan_dev(orig_dev))
1263                                                 continue;
1264                                         if (vport_fid && vport_fid == fid)
1265                                                 fdb->vid = 0;
1266                                         else if (!vport_fid &&
1267                                                  !mlxsw_sp_fid_is_vfid(fid))
1268                                                 fdb->vid = fid;
1269                                         else
1270                                                 continue;
1271                                         ether_addr_copy(fdb->addr, mac);
1272                                         fdb->ndm_state = NUD_REACHABLE;
1273                                         err = cb(&fdb->obj);
1274                                         if (err)
1275                                                 stored_err = err;
1276                                 }
1277                                 break;
1278                         }
1279                 }
1280         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1281
1282 out:
1283         kfree(sfd_pl);
1284         return stored_err ? stored_err : err;
1285 }
1286
1287 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1288                                    struct switchdev_obj_port_vlan *vlan,
1289                                    switchdev_obj_dump_cb_t *cb)
1290 {
1291         u16 vid;
1292         int err = 0;
1293
1294         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1295                 vlan->flags = 0;
1296                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1297                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1298                 return cb(&vlan->obj);
1299         }
1300
1301         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1302                 vlan->flags = 0;
1303                 if (vid == mlxsw_sp_port->pvid)
1304                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1305                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1306                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1307                 vlan->vid_begin = vid;
1308                 vlan->vid_end = vid;
1309                 err = cb(&vlan->obj);
1310                 if (err)
1311                         break;
1312         }
1313         return err;
1314 }
1315
1316 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1317                                   struct switchdev_obj *obj,
1318                                   switchdev_obj_dump_cb_t *cb)
1319 {
1320         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1321         int err = 0;
1322
1323         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1324         if (!mlxsw_sp_port)
1325                 return -EINVAL;
1326
1327         switch (obj->id) {
1328         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1329                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1330                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1331                 break;
1332         case SWITCHDEV_OBJ_ID_PORT_FDB:
1333                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1334                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1335                                              obj->orig_dev);
1336                 break;
1337         default:
1338                 err = -EOPNOTSUPP;
1339                 break;
1340         }
1341
1342         return err;
1343 }
1344
1345 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1346         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1347         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1348         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1349         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1350         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1351 };
1352
1353 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1354                                         char *mac, u16 vid,
1355                                         struct net_device *dev)
1356 {
1357         struct switchdev_notifier_fdb_info info;
1358         unsigned long notifier_type;
1359
1360         if (learning_sync) {
1361                 info.addr = mac;
1362                 info.vid = vid;
1363                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1364                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1365         }
1366 }
1367
1368 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1369                                             char *sfn_pl, int rec_index,
1370                                             bool adding)
1371 {
1372         struct mlxsw_sp_port *mlxsw_sp_port;
1373         char mac[ETH_ALEN];
1374         u8 local_port;
1375         u16 vid, fid;
1376         bool do_notification = true;
1377         int err;
1378
1379         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1380         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1381         if (!mlxsw_sp_port) {
1382                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1383                 goto just_remove;
1384         }
1385
1386         if (mlxsw_sp_fid_is_vfid(fid)) {
1387                 struct mlxsw_sp_port *mlxsw_sp_vport;
1388
1389                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1390                                                                  fid);
1391                 if (!mlxsw_sp_vport) {
1392                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1393                         goto just_remove;
1394                 }
1395                 vid = 0;
1396                 /* Override the physical port with the vPort. */
1397                 mlxsw_sp_port = mlxsw_sp_vport;
1398         } else {
1399                 vid = fid;
1400         }
1401
1402         adding = adding && mlxsw_sp_port->learning;
1403
1404 do_fdb_op:
1405         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1406                                       adding, true);
1407         if (err) {
1408                 if (net_ratelimit())
1409                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1410                 return;
1411         }
1412
1413         if (!do_notification)
1414                 return;
1415         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1416                                     adding, mac, vid, mlxsw_sp_port->dev);
1417         return;
1418
1419 just_remove:
1420         adding = false;
1421         do_notification = false;
1422         goto do_fdb_op;
1423 }
1424
1425 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1426                                                 char *sfn_pl, int rec_index,
1427                                                 bool adding)
1428 {
1429         struct mlxsw_sp_port *mlxsw_sp_port;
1430         struct net_device *dev;
1431         char mac[ETH_ALEN];
1432         u16 lag_vid = 0;
1433         u16 lag_id;
1434         u16 vid, fid;
1435         bool do_notification = true;
1436         int err;
1437
1438         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1439         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1440         if (!mlxsw_sp_port) {
1441                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1442                 goto just_remove;
1443         }
1444
1445         if (mlxsw_sp_fid_is_vfid(fid)) {
1446                 struct mlxsw_sp_port *mlxsw_sp_vport;
1447
1448                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1449                                                                  fid);
1450                 if (!mlxsw_sp_vport) {
1451                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1452                         goto just_remove;
1453                 }
1454
1455                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1456                 dev = mlxsw_sp_vport->dev;
1457                 vid = 0;
1458                 /* Override the physical port with the vPort. */
1459                 mlxsw_sp_port = mlxsw_sp_vport;
1460         } else {
1461                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1462                 vid = fid;
1463         }
1464
1465         adding = adding && mlxsw_sp_port->learning;
1466
1467 do_fdb_op:
1468         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1469                                           adding, true);
1470         if (err) {
1471                 if (net_ratelimit())
1472                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1473                 return;
1474         }
1475
1476         if (!do_notification)
1477                 return;
1478         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1479                                     vid, dev);
1480         return;
1481
1482 just_remove:
1483         adding = false;
1484         do_notification = false;
1485         goto do_fdb_op;
1486 }
1487
1488 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1489                                             char *sfn_pl, int rec_index)
1490 {
1491         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1492         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1493                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1494                                                 rec_index, true);
1495                 break;
1496         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1497                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1498                                                 rec_index, false);
1499                 break;
1500         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1501                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1502                                                     rec_index, true);
1503                 break;
1504         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1505                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1506                                                     rec_index, false);
1507                 break;
1508         }
1509 }
1510
1511 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1512 {
1513         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1514                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1515 }
1516
1517 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1518 {
1519         struct mlxsw_sp *mlxsw_sp;
1520         char *sfn_pl;
1521         u8 num_rec;
1522         int i;
1523         int err;
1524
1525         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1526         if (!sfn_pl)
1527                 return;
1528
1529         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1530
1531         rtnl_lock();
1532         do {
1533                 mlxsw_reg_sfn_pack(sfn_pl);
1534                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1535                 if (err) {
1536                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1537                         break;
1538                 }
1539                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1540                 for (i = 0; i < num_rec; i++)
1541                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1542
1543         } while (num_rec);
1544         rtnl_unlock();
1545
1546         kfree(sfn_pl);
1547         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1548 }
1549
1550 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1551 {
1552         int err;
1553
1554         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1555         if (err) {
1556                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1557                 return err;
1558         }
1559         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1560         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1561         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1562         return 0;
1563 }
1564
1565 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1566 {
1567         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1568 }
1569
1570 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1571 {
1572         return mlxsw_sp_fdb_init(mlxsw_sp);
1573 }
1574
1575 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1576 {
1577         mlxsw_sp_fdb_fini(mlxsw_sp);
1578 }
1579
1580 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
1581 {
1582         struct net_device *dev = mlxsw_sp_port->dev;
1583         int err;
1584
1585         /* Allow only untagged packets to ingress and tag them internally
1586          * with VID 1.
1587          */
1588         mlxsw_sp_port->pvid = 1;
1589         err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
1590                                         true);
1591         if (err) {
1592                 netdev_err(dev, "Unable to init VLANs\n");
1593                 return err;
1594         }
1595
1596         /* Add implicit VLAN interface in the device, so that untagged
1597          * packets will be classified to the default vFID.
1598          */
1599         err = mlxsw_sp_port_add_vid(dev, 0, 1);
1600         if (err)
1601                 netdev_err(dev, "Failed to configure default vFID\n");
1602
1603         return err;
1604 }
1605
1606 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1607 {
1608         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1609 }
1610
1611 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1612 {
1613 }