drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
   3  * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
   5  * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
   6  * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the names of the copyright holders nor the names of its
  17  *    contributors may be used to endorse or promote products derived from
  18  *    this software without specific prior written permission.
  19  *
  20  * Alternatively, this software may be distributed under the terms of the
  21  * GNU General Public License ("GPL") version 2 as published by the Free
  22  * Software Foundation.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #include <linux/kernel.h>
  38 #include <linux/types.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/slab.h>
  42 #include <linux/device.h>
  43 #include <linux/skbuff.h>
  44 #include <linux/if_vlan.h>
  45 #include <linux/if_bridge.h>
  46 #include <linux/workqueue.h>
  47 #include <linux/jiffies.h>
  48 #include <linux/rtnetlink.h>
  49 #include <net/switchdev.h>
  50
  51 #include "spectrum.h"
  52 #include "core.h"
  53 #include "reg.h"
  54
  55 static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
  56                                         u16 vid)
  57 {
  58         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
  59         u16 fid = vid;
  60
  61         fid = f ? f->fid : fid;
  62
  63         if (!fid)
  64                 fid = mlxsw_sp_port->pvid;
  65
  66         return fid;
  67 }
  68
  69 static struct mlxsw_sp_port *
  70 mlxsw_sp_port_orig_get(struct net_device *dev,
  71                        struct mlxsw_sp_port *mlxsw_sp_port)
  72 {
  73         struct mlxsw_sp_port *mlxsw_sp_vport;
  74         u16 vid;
  75
  76         if (!is_vlan_dev(dev))
  77                 return mlxsw_sp_port;
  78
  79         vid = vlan_dev_vlan_id(dev);
  80         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
  81         WARN_ON(!mlxsw_sp_vport);
  82
  83         return mlxsw_sp_vport;
  84 }
  85
  86 static int mlxsw_sp_port_attr_get(struct net_device *dev,
  87                                   struct switchdev_attr *attr)
  88 {
  89         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
  90         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  91
  92         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
  93         if (!mlxsw_sp_port)
  94                 return -EINVAL;
  95
  96         switch (attr->id) {
  97         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
  98                 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
  99                 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
 100                        attr->u.ppid.id_len);
 101                 break;
 102         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 103                 attr->u.brport_flags =
 104                         (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
 105                         (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
 106                         (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
 107                 break;
 108         default:
 109                 return -EOPNOTSUPP;
 110         }
 111
 112         return 0;
 113 }
 114
 115 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 116                                        u8 state)
 117 {
 118         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 119         enum mlxsw_reg_spms_state spms_state;
 120         char *spms_pl;
 121         u16 vid;
 122         int err;
 123
 124         switch (state) {
 125         case BR_STATE_FORWARDING:
 126                 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
 127                 break;
 128         case BR_STATE_LEARNING:
 129                 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
 130                 break;
 131         case BR_STATE_LISTENING: /* fall-through */
 132         case BR_STATE_DISABLED: /* fall-through */
 133         case BR_STATE_BLOCKING:
 134                 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
 135                 break;
 136         default:
 137                 BUG();
 138         }
 139
 140         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 141         if (!spms_pl)
 142                 return -ENOMEM;
 143         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 144
 145         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 146                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 147                 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 148         } else {
 149                 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 150                         mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 151         }
 152
 153         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 154         kfree(spms_pl);
 155         return err;
 156 }
 157
 158 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 159                                             struct switchdev_trans *trans,
 160                                             u8 state)
 161 {
 162         if (switchdev_trans_ph_prepare(trans))
 163                 return 0;
 164
 165         mlxsw_sp_port->stp_state = state;
 166         return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
 167 }
 168
 169 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 170                                      u16 idx_begin, u16 idx_end, bool uc_set,
 171                                      bool bm_set)
 172 {
 173         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 174         u16 local_port = mlxsw_sp_port->local_port;
 175         enum mlxsw_flood_table_type table_type;
 176         u16 range = idx_end - idx_begin + 1;
 177         char *sftr_pl;
 178         int err;
 179
 180         if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 181                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
 182         else
 183                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
 184
 185         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 186         if (!sftr_pl)
 187                 return -ENOMEM;
 188
 189         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 190                             table_type, range, local_port, uc_set);
 191         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 192         if (err)
 193                 goto buffer_out;
 194
 195         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
 196                             table_type, range, local_port, bm_set);
 197         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 198         if (err)
 199                 goto err_flood_bm_set;
 200
 201         goto buffer_out;
 202
 203 err_flood_bm_set:
 204         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 205                             table_type, range, local_port, !uc_set);
 206         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 207 buffer_out:
 208         kfree(sftr_pl);
 209         return err;
 210 }
 211
 212 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 213                                       bool set)
 214 {
 215         struct net_device *dev = mlxsw_sp_port->dev;
 216         u16 vid, last_visited_vid;
 217         int err;
 218
 219         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 220                 u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 221                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 222
 223                 return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 224                                                   set, true);
 225         }
 226
 227         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 228                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 229                                                 true);
 230                 if (err) {
 231                         last_visited_vid = vid;
 232                         goto err_port_flood_set;
 233                 }
 234         }
 235
 236         return 0;
 237
 238 err_port_flood_set:
 239         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 240                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 241         netdev_err(dev, "Failed to configure unicast flooding\n");
 242         return err;
 243 }
 244
 245 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 246                              bool set)
 247 {
 248         u16 vfid;
 249
 250         /* In case of vFIDs, index into the flooding table is relative to
 251          * the start of the vFIDs range.
 252          */
 253         vfid = mlxsw_sp_fid_to_vfid(fid);
 254         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set, set);
 255 }
 256
 257 static int mlxsw_sp_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 258                                       bool set)
 259 {
 260         u16 vid;
 261         int err;
 262
 263         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 264                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 265
 266                 return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 267                                                         set);
 268         }
 269
 270         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 271                 err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 272                                                        set);
 273                 if (err)
 274                         goto err_port_vid_learning_set;
 275         }
 276
 277         return 0;
 278
 279 err_port_vid_learning_set:
 280         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 281                 __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid, !set);
 282         return err;
 283 }
 284
 285 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 286                                            struct switchdev_trans *trans,
 287                                            unsigned long brport_flags)
 288 {
 289         unsigned long learning = mlxsw_sp_port->learning ? BR_LEARNING : 0;
 290         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 291         int err;
 292
 293         if (!mlxsw_sp_port->bridged)
 294                 return -EINVAL;
 295
 296         if (switchdev_trans_ph_prepare(trans))
 297                 return 0;
 298
 299         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 300                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port,
 301                                                  !mlxsw_sp_port->uc_flood);
 302                 if (err)
 303                         return err;
 304         }
 305
 306         if ((learning ^ brport_flags) & BR_LEARNING) {
 307                 err = mlxsw_sp_port_learning_set(mlxsw_sp_port,
 308                                                  !mlxsw_sp_port->learning);
 309                 if (err)
 310                         goto err_port_learning_set;
 311         }
 312
 313         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 314         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 315         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 316
 317         return 0;
 318
 319 err_port_learning_set:
 320         if ((uc_flood ^ brport_flags) & BR_FLOOD)
 321                 mlxsw_sp_port_uc_flood_set(mlxsw_sp_port,
 322                                            mlxsw_sp_port->uc_flood);
 323         return err;
 324 }
 325
 326 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 327 {
 328         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 329         int err;
 330
 331         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 332         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 333         if (err)
 334                 return err;
 335         mlxsw_sp->ageing_time = ageing_time;
 336         return 0;
 337 }
 338
 339 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 340                                             struct switchdev_trans *trans,
 341                                             unsigned long ageing_clock_t)
 342 {
 343         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 344         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 345         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 346
 347         if (switchdev_trans_ph_prepare(trans)) {
 348                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 349                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 350                         return -ERANGE;
 351                 else
 352                         return 0;
 353         }
 354
 355         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 356 }
 357
 358 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 359                                           struct switchdev_trans *trans,
 360                                           struct net_device *orig_dev,
 361                                           bool vlan_enabled)
 362 {
 363         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 364
 365         /* SWITCHDEV_TRANS_PREPARE phase */
 366         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 367                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 368                 return -EINVAL;
 369         }
 370
 371         return 0;
 372 }
 373
 374 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 375                                   const struct switchdev_attr *attr,
 376                                   struct switchdev_trans *trans)
 377 {
 378         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 379         int err = 0;
 380
 381         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 382         if (!mlxsw_sp_port)
 383                 return -EINVAL;
 384
 385         switch (attr->id) {
 386         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 387                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 388                                                        attr->u.stp_state);
 389                 break;
 390         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 391                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 392                                                       attr->u.brport_flags);
 393                 break;
 394         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 395                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 396                                                        attr->u.ageing_time);
 397                 break;
 398         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 399                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 400                                                      attr->orig_dev,
 401                                                      attr->u.vlan_filtering);
 402                 break;
 403         default:
 404                 err = -EOPNOTSUPP;
 405                 break;
 406         }
 407
 408         return err;
 409 }
 410
 411 static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 412 {
 413         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 414
 415         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
 416         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 417 }
 418
 419 static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
 420 {
 421         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 422         char svfa_pl[MLXSW_REG_SVFA_LEN];
 423
 424         mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
 425         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 426 }
 427
 428 static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
 429 {
 430         struct mlxsw_sp_fid *f;
 431
 432         f = kzalloc(sizeof(*f), GFP_KERNEL);
 433         if (!f)
 434                 return NULL;
 435
 436         f->fid = fid;
 437
 438         return f;
 439 }
 440
 441 struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 442 {
 443         struct mlxsw_sp_fid *f;
 444         int err;
 445
 446         err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
 447         if (err)
 448                 return ERR_PTR(err);
 449
 450         /* Although all the ports member in the FID might be using a
 451          * {Port, VID} to FID mapping, we create a global VID-to-FID
 452          * mapping. This allows a port to transition to VLAN mode,
 453          * knowing the global mapping exists.
 454          */
 455         err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
 456         if (err)
 457                 goto err_fid_map;
 458
 459         f = mlxsw_sp_fid_alloc(fid);
 460         if (!f) {
 461                 err = -ENOMEM;
 462                 goto err_allocate_fid;
 463         }
 464
 465         list_add(&f->list, &mlxsw_sp->fids);
 466
 467         return f;
 468
 469 err_allocate_fid:
 470         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 471 err_fid_map:
 472         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 473         return ERR_PTR(err);
 474 }
 475
 476 void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f)
 477 {
 478         u16 fid = f->fid;
 479
 480         list_del(&f->list);
 481
 482         if (f->r)
 483                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
 484
 485         kfree(f);
 486
 487         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 488
 489         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 490 }
 491
 492 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 493                                     u16 fid)
 494 {
 495         struct mlxsw_sp_fid *f;
 496
 497         if (test_bit(fid, mlxsw_sp_port->active_vlans))
 498                 return 0;
 499
 500         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 501         if (!f) {
 502                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 503                 if (IS_ERR(f))
 504                         return PTR_ERR(f);
 505         }
 506
 507         f->ref_count++;
 508
 509         netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
 510
 511         return 0;
 512 }
 513
 514 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 515                                       u16 fid)
 516 {
 517         struct mlxsw_sp_fid *f;
 518
 519         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 520         if (WARN_ON(!f))
 521                 return;
 522
 523         netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
 524
 525         mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 526
 527         if (--f->ref_count == 0)
 528                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 529 }
 530
 531 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 532                                  bool valid)
 533 {
 534         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 535
 536         /* If port doesn't have vPorts, then it can use the global
 537          * VID-to-FID mapping.
 538          */
 539         if (list_empty(&mlxsw_sp_port->vports_list))
 540                 return 0;
 541
 542         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 543 }
 544
 545 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 546                                   u16 fid_begin, u16 fid_end)
 547 {
 548         int fid, err;
 549
 550         for (fid = fid_begin; fid <= fid_end; fid++) {
 551                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 552                 if (err)
 553                         goto err_port_fid_join;
 554         }
 555
 556         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 557                                         mlxsw_sp_port->uc_flood, true);
 558         if (err)
 559                 goto err_port_flood_set;
 560
 561         for (fid = fid_begin; fid <= fid_end; fid++) {
 562                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 563                 if (err)
 564                         goto err_port_fid_map;
 565         }
 566
 567         return 0;
 568
 569 err_port_fid_map:
 570         for (fid--; fid >= fid_begin; fid--)
 571                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 572         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 573                                   false);
 574 err_port_flood_set:
 575         fid = fid_end;
 576 err_port_fid_join:
 577         for (fid--; fid >= fid_begin; fid--)
 578                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 579         return err;
 580 }
 581
 582 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 583                                     u16 fid_begin, u16 fid_end)
 584 {
 585         int fid;
 586
 587         for (fid = fid_begin; fid <= fid_end; fid++)
 588                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 589
 590         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 591                                   false);
 592
 593         for (fid = fid_begin; fid <= fid_end; fid++)
 594                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 595 }
 596
 597 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 598                                     u16 vid)
 599 {
 600         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 601         char spvid_pl[MLXSW_REG_SPVID_LEN];
 602
 603         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 604         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 605 }
 606
 607 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 608                                             bool allow)
 609 {
 610         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 611         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 612
 613         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 614         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 615 }
 616
 617 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 618 {
 619         struct net_device *dev = mlxsw_sp_port->dev;
 620         int err;
 621
 622         if (!vid) {
 623                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 624                 if (err) {
 625                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 626                         return err;
 627                 }
 628         } else {
 629                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 630                 if (err) {
 631                         netdev_err(dev, "Failed to set PVID\n");
 632                         return err;
 633                 }
 634
 635                 /* Only allow if not already allowed. */
 636                 if (!mlxsw_sp_port->pvid) {
 637                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 638                                                                true);
 639                         if (err) {
 640                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 641                                 goto err_port_allow_untagged_set;
 642                         }
 643                 }
 644         }
 645
 646         mlxsw_sp_port->pvid = vid;
 647         return 0;
 648
 649 err_port_allow_untagged_set:
 650         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 651         return err;
 652 }
 653
 654 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 655                                      u16 vid_begin, u16 vid_end, bool is_member,
 656                                      bool untagged)
 657 {
 658         u16 vid, vid_e;
 659         int err;
 660
 661         for (vid = vid_begin; vid <= vid_end;
 662              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 663                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 664                             vid_end);
 665
 666                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 667                                              is_member, untagged);
 668                 if (err)
 669                         return err;
 670         }
 671
 672         return 0;
 673 }
 674
 675 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 676                                           u16 vid_begin, u16 vid_end,
 677                                           bool learn_enable)
 678 {
 679         u16 vid, vid_e;
 680         int err;
 681
 682         for (vid = vid_begin; vid <= vid_end;
 683              vid += MLXSW_REG_SPVMLR_REC_MAX_COUNT) {
 684                 vid_e = min((u16) (vid + MLXSW_REG_SPVMLR_REC_MAX_COUNT - 1),
 685                             vid_end);
 686
 687                 err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid,
 688                                                        vid_e, learn_enable);
 689                 if (err)
 690                         return err;
 691         }
 692
 693         return 0;
 694 }
 695
 696 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 697                                      u16 vid_begin, u16 vid_end,
 698                                      bool flag_untagged, bool flag_pvid)
 699 {
 700         struct net_device *dev = mlxsw_sp_port->dev;
 701         u16 vid, old_pvid;
 702         int err;
 703
 704         if (!mlxsw_sp_port->bridged)
 705                 return -EINVAL;
 706
 707         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 708         if (err) {
 709                 netdev_err(dev, "Failed to join FIDs\n");
 710                 return err;
 711         }
 712
 713         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 714                                         true, flag_untagged);
 715         if (err) {
 716                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 717                            vid_end);
 718                 goto err_port_vlans_set;
 719         }
 720
 721         old_pvid = mlxsw_sp_port->pvid;
 722         if (flag_pvid && old_pvid != vid_begin) {
 723                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 724                 if (err) {
 725                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 726                         goto err_port_pvid_set;
 727                 }
 728         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 729                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 730                 if (err) {
 731                         netdev_err(dev, "Unable to del PVID\n");
 732                         goto err_port_pvid_set;
 733                 }
 734         }
 735
 736         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
 737                                              mlxsw_sp_port->learning);
 738         if (err) {
 739                 netdev_err(dev, "Failed to set learning for VIDs %d-%d\n",
 740                            vid_begin, vid_end);
 741                 goto err_port_vid_learning_set;
 742         }
 743
 744         /* Changing activity bits only if HW operation succeded */
 745         for (vid = vid_begin; vid <= vid_end; vid++) {
 746                 set_bit(vid, mlxsw_sp_port->active_vlans);
 747                 if (flag_untagged)
 748                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 749                 else
 750                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 751         }
 752
 753         /* STP state change must be done after we set active VLANs */
 754         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 755                                           mlxsw_sp_port->stp_state);
 756         if (err) {
 757                 netdev_err(dev, "Failed to set STP state\n");
 758                 goto err_port_stp_state_set;
 759         }
 760
 761         return 0;
 762
 763 err_port_stp_state_set:
 764         for (vid = vid_begin; vid <= vid_end; vid++)
 765                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 766         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
 767                                        false);
 768 err_port_vid_learning_set:
 769         if (old_pvid != mlxsw_sp_port->pvid)
 770                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 771 err_port_pvid_set:
 772         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 773                                   false);
 774 err_port_vlans_set:
 775         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 776         return err;
 777 }
 778
 779 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 780                                    const struct switchdev_obj_port_vlan *vlan,
 781                                    struct switchdev_trans *trans)
 782 {
 783         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 784         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 785
 786         if (switchdev_trans_ph_prepare(trans))
 787                 return 0;
 788
 789         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 790                                          vlan->vid_begin, vlan->vid_end,
 791                                          flag_untagged, flag_pvid);
 792 }
 793
 794 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 795 {
 796         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 797                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 798 }
 799
 800 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 801 {
 802         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 803                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 804 }
 805
 806 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 807                                      const char *mac, u16 fid, bool adding,
 808                                      enum mlxsw_reg_sfd_rec_action action,
 809                                      bool dynamic)
 810 {
 811         char *sfd_pl;
 812         int err;
 813
 814         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 815         if (!sfd_pl)
 816                 return -ENOMEM;
 817
 818         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 819         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 820                               mac, fid, action, local_port);
 821         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 822         kfree(sfd_pl);
 823
 824         return err;
 825 }
 826
 827 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 828                                    const char *mac, u16 fid, bool adding,
 829                                    bool dynamic)
 830 {
 831         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
 832                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
 833 }
 834
 835 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
 836                         bool adding)
 837 {
 838         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
 839                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
 840                                          false);
 841 }
 842
 843 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 844                                        const char *mac, u16 fid, u16 lag_vid,
 845                                        bool adding, bool dynamic)
 846 {
 847         char *sfd_pl;
 848         int err;
 849
 850         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 851         if (!sfd_pl)
 852                 return -ENOMEM;
 853
 854         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 855         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 856                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 857                                   lag_vid, lag_id);
 858         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 859         kfree(sfd_pl);
 860
 861         return err;
 862 }
 863
 864 static int
 865 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 866                              const struct switchdev_obj_port_fdb *fdb,
 867                              struct switchdev_trans *trans)
 868 {
 869         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 870         u16 lag_vid = 0;
 871
 872         if (switchdev_trans_ph_prepare(trans))
 873                 return 0;
 874
 875         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 876                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 877         }
 878
 879         if (!mlxsw_sp_port->lagged)
 880                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 881                                                mlxsw_sp_port->local_port,
 882                                                fdb->addr, fid, true, false);
 883         else
 884                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 885                                                    mlxsw_sp_port->lag_id,
 886                                                    fdb->addr, fid, lag_vid,
 887                                                    true, false);
 888 }
 889
 890 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 891                                 u16 fid, u16 mid, bool adding)
 892 {
 893         char *sfd_pl;
 894         int err;
 895
 896         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 897         if (!sfd_pl)
 898                 return -ENOMEM;
 899
 900         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 901         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 902                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 903         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 904         kfree(sfd_pl);
 905         return err;
 906 }
 907
 908 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 909                                   bool add, bool clear_all_ports)
 910 {
 911         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 912         char *smid_pl;
 913         int err, i;
 914
 915         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 916         if (!smid_pl)
 917                 return -ENOMEM;
 918
 919         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 920         if (clear_all_ports) {
 921                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 922                         if (mlxsw_sp->ports[i])
 923                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 924         }
 925         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 926         kfree(smid_pl);
 927         return err;
 928 }
 929
 930 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 931                                               const unsigned char *addr,
 932                                               u16 fid)
 933 {
 934         struct mlxsw_sp_mid *mid;
 935
 936         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 937                 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid)
 938                         return mid;
 939         }
 940         return NULL;
 941 }
 942
 943 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 944                                                 const unsigned char *addr,
 945                                                 u16 fid)
 946 {
 947         struct mlxsw_sp_mid *mid;
 948         u16 mid_idx;
 949
 950         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 951                                       MLXSW_SP_MID_MAX);
 952         if (mid_idx == MLXSW_SP_MID_MAX)
 953                 return NULL;
 954
 955         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 956         if (!mid)
 957                 return NULL;
 958
 959         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 960         ether_addr_copy(mid->addr, addr);
 961         mid->fid = fid;
 962         mid->mid = mid_idx;
 963         mid->ref_count = 0;
 964         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 965
 966         return mid;
 967 }
 968
 969 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 970                                  struct mlxsw_sp_mid *mid)
 971 {
 972         if (--mid->ref_count == 0) {
 973                 list_del(&mid->list);
 974                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 975                 kfree(mid);
 976                 return 1;
 977         }
 978         return 0;
 979 }
 980
 981 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 982                                  const struct switchdev_obj_port_mdb *mdb,
 983                                  struct switchdev_trans *trans)
 984 {
 985         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 986         struct net_device *dev = mlxsw_sp_port->dev;
 987         struct mlxsw_sp_mid *mid;
 988         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
 989         int err = 0;
 990
 991         if (switchdev_trans_ph_prepare(trans))
 992                 return 0;
 993
 994         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid);
 995         if (!mid) {
 996                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, fid);
 997                 if (!mid) {
 998                         netdev_err(dev, "Unable to allocate MC group\n");
 999                         return -ENOMEM;
1000                 }
1001         }
1002         mid->ref_count++;
1003
1004         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
1005                                      mid->ref_count == 1);
1006         if (err) {
1007                 netdev_err(dev, "Unable to set SMID\n");
1008                 goto err_out;
1009         }
1010
1011         if (mid->ref_count == 1) {
1012                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
1013                                            true);
1014                 if (err) {
1015                         netdev_err(dev, "Unable to set MC SFD\n");
1016                         goto err_out;
1017                 }
1018         }
1019
1020         return 0;
1021
1022 err_out:
1023         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
1024         return err;
1025 }
1026
1027 static int mlxsw_sp_port_obj_add(struct net_device *dev,
1028                                  const struct switchdev_obj *obj,
1029                                  struct switchdev_trans *trans)
1030 {
1031         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1032         int err = 0;
1033
1034         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1035         if (!mlxsw_sp_port)
1036                 return -EINVAL;
1037
1038         switch (obj->id) {
1039         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1040                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1041                         return 0;
1042
1043                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
1044                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
1045                                               trans);
1046                 break;
1047         case SWITCHDEV_OBJ_ID_PORT_FDB:
1048                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
1049                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
1050                                                    trans);
1051                 break;
1052         case SWITCHDEV_OBJ_ID_PORT_MDB:
1053                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
1054                                             SWITCHDEV_OBJ_PORT_MDB(obj),
1055                                             trans);
1056                 break;
1057         default:
1058                 err = -EOPNOTSUPP;
1059                 break;
1060         }
1061
1062         return err;
1063 }
1064
1065 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1066                                      u16 vid_begin, u16 vid_end)
1067 {
1068         u16 vid, pvid;
1069
1070         if (!mlxsw_sp_port->bridged)
1071                 return -EINVAL;
1072
1073         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
1074                                        false);
1075
1076         pvid = mlxsw_sp_port->pvid;
1077         if (pvid >= vid_begin && pvid <= vid_end)
1078                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1079
1080         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
1081                                   false);
1082
1083         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1084
1085         /* Changing activity bits only if HW operation succeded */
1086         for (vid = vid_begin; vid <= vid_end; vid++)
1087                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1088
1089         return 0;
1090 }
1091
1092 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1093                                    const struct switchdev_obj_port_vlan *vlan)
1094 {
1095         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
1096                                          vlan->vid_end);
1097 }
1098
1099 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1100 {
1101         u16 vid;
1102
1103         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1104                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
1105 }
1106
1107 static int
1108 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1109                              const struct switchdev_obj_port_fdb *fdb)
1110 {
1111         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1112         u16 lag_vid = 0;
1113
1114         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1115                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1116         }
1117
1118         if (!mlxsw_sp_port->lagged)
1119                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1120                                                mlxsw_sp_port->local_port,
1121                                                fdb->addr, fid,
1122                                                false, false);
1123         else
1124                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1125                                                    mlxsw_sp_port->lag_id,
1126                                                    fdb->addr, fid, lag_vid,
1127                                                    false, false);
1128 }
1129
1130 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1131                                  const struct switchdev_obj_port_mdb *mdb)
1132 {
1133         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1134         struct net_device *dev = mlxsw_sp_port->dev;
1135         struct mlxsw_sp_mid *mid;
1136         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1137         u16 mid_idx;
1138         int err = 0;
1139
1140         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid);
1141         if (!mid) {
1142                 netdev_err(dev, "Unable to remove port from MC DB\n");
1143                 return -EINVAL;
1144         }
1145
1146         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1147         if (err)
1148                 netdev_err(dev, "Unable to remove port from SMID\n");
1149
1150         mid_idx = mid->mid;
1151         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1152                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1153                                            false);
1154                 if (err)
1155                         netdev_err(dev, "Unable to remove MC SFD\n");
1156         }
1157
1158         return err;
1159 }
1160
1161 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1162                                  const struct switchdev_obj *obj)
1163 {
1164         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1165         int err = 0;
1166
1167         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1168         if (!mlxsw_sp_port)
1169                 return -EINVAL;
1170
1171         switch (obj->id) {
1172         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1173                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1174                         return 0;
1175
1176                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1177                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1178                 break;
1179         case SWITCHDEV_OBJ_ID_PORT_FDB:
1180                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1181                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1182                 break;
1183         case SWITCHDEV_OBJ_ID_PORT_MDB:
1184                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1185                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1186                 break;
1187         default:
1188                 err = -EOPNOTSUPP;
1189                 break;
1190         }
1191
1192         return err;
1193 }
1194
1195 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1196                                                    u16 lag_id)
1197 {
1198         struct mlxsw_sp_port *mlxsw_sp_port;
1199         u64 max_lag_members;
1200         int i;
1201
1202         max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core,
1203                                              MAX_LAG_MEMBERS);
1204         for (i = 0; i < max_lag_members; i++) {
1205                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1206                 if (mlxsw_sp_port)
1207                         return mlxsw_sp_port;
1208         }
1209         return NULL;
1210 }
1211
1212 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1213                                   struct switchdev_obj_port_fdb *fdb,
1214                                   switchdev_obj_dump_cb_t *cb,
1215                                   struct net_device *orig_dev)
1216 {
1217         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1218         struct mlxsw_sp_port *tmp;
1219         struct mlxsw_sp_fid *f;
1220         u16 vport_fid;
1221         char *sfd_pl;
1222         char mac[ETH_ALEN];
1223         u16 fid;
1224         u8 local_port;
1225         u16 lag_id;
1226         u8 num_rec;
1227         int stored_err = 0;
1228         int i;
1229         int err;
1230
1231         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1232         if (!sfd_pl)
1233                 return -ENOMEM;
1234
1235         f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1236         vport_fid = f ? f->fid : 0;
1237
1238         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1239         do {
1240                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1241                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1242                 if (err)
1243                         goto out;
1244
1245                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1246
1247                 /* Even in case of error, we have to run the dump to the end
1248                  * so the session in firmware is finished.
1249                  */
1250                 if (stored_err)
1251                         continue;
1252
1253                 for (i = 0; i < num_rec; i++) {
1254                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1255                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1256                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1257                                                         &local_port);
1258                                 if (local_port == mlxsw_sp_port->local_port) {
1259                                         if (vport_fid && vport_fid == fid)
1260                                                 fdb->vid = 0;
1261                                         else if (!vport_fid &&
1262                                                  !mlxsw_sp_fid_is_vfid(fid))
1263                                                 fdb->vid = fid;
1264                                         else
1265                                                 continue;
1266                                         ether_addr_copy(fdb->addr, mac);
1267                                         fdb->ndm_state = NUD_REACHABLE;
1268                                         err = cb(&fdb->obj);
1269                                         if (err)
1270                                                 stored_err = err;
1271                                 }
1272                                 break;
1273                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1274                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1275                                                             mac, &fid, &lag_id);
1276                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1277                                 if (tmp && tmp->local_port ==
1278                                     mlxsw_sp_port->local_port) {
1279                                         /* LAG records can only point to LAG
1280                                          * devices or VLAN devices on top.
1281                                          */
1282                                         if (!netif_is_lag_master(orig_dev) &&
1283                                             !is_vlan_dev(orig_dev))
1284                                                 continue;
1285                                         if (vport_fid && vport_fid == fid)
1286                                                 fdb->vid = 0;
1287                                         else if (!vport_fid &&
1288                                                  !mlxsw_sp_fid_is_vfid(fid))
1289                                                 fdb->vid = fid;
1290                                         else
1291                                                 continue;
1292                                         ether_addr_copy(fdb->addr, mac);
1293                                         fdb->ndm_state = NUD_REACHABLE;
1294                                         err = cb(&fdb->obj);
1295                                         if (err)
1296                                                 stored_err = err;
1297                                 }
1298                                 break;
1299                         }
1300                 }
1301         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1302
1303 out:
1304         kfree(sfd_pl);
1305         return stored_err ? stored_err : err;
1306 }
1307
1308 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1309                                    struct switchdev_obj_port_vlan *vlan,
1310                                    switchdev_obj_dump_cb_t *cb)
1311 {
1312         u16 vid;
1313         int err = 0;
1314
1315         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1316                 vlan->flags = 0;
1317                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1318                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1319                 return cb(&vlan->obj);
1320         }
1321
1322         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1323                 vlan->flags = 0;
1324                 if (vid == mlxsw_sp_port->pvid)
1325                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1326                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1327                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1328                 vlan->vid_begin = vid;
1329                 vlan->vid_end = vid;
1330                 err = cb(&vlan->obj);
1331                 if (err)
1332                         break;
1333         }
1334         return err;
1335 }
1336
1337 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1338                                   struct switchdev_obj *obj,
1339                                   switchdev_obj_dump_cb_t *cb)
1340 {
1341         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1342         int err = 0;
1343
1344         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1345         if (!mlxsw_sp_port)
1346                 return -EINVAL;
1347
1348         switch (obj->id) {
1349         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1350                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1351                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1352                 break;
1353         case SWITCHDEV_OBJ_ID_PORT_FDB:
1354                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1355                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1356                                              obj->orig_dev);
1357                 break;
1358         default:
1359                 err = -EOPNOTSUPP;
1360                 break;
1361         }
1362
1363         return err;
1364 }
1365
1366 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1367         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1368         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1369         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1370         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1371         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1372 };
1373
1374 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1375                                         char *mac, u16 vid,
1376                                         struct net_device *dev)
1377 {
1378         struct switchdev_notifier_fdb_info info;
1379         unsigned long notifier_type;
1380
1381         if (learning_sync) {
1382                 info.addr = mac;
1383                 info.vid = vid;
1384                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1385                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1386         }
1387 }
1388
1389 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1390                                             char *sfn_pl, int rec_index,
1391                                             bool adding)
1392 {
1393         struct mlxsw_sp_port *mlxsw_sp_port;
1394         char mac[ETH_ALEN];
1395         u8 local_port;
1396         u16 vid, fid;
1397         bool do_notification = true;
1398         int err;
1399
1400         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1401         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1402         if (!mlxsw_sp_port) {
1403                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1404                 goto just_remove;
1405         }
1406
1407         if (mlxsw_sp_fid_is_vfid(fid)) {
1408                 struct mlxsw_sp_port *mlxsw_sp_vport;
1409
1410                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1411                                                                  fid);
1412                 if (!mlxsw_sp_vport) {
1413                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1414                         goto just_remove;
1415                 }
1416                 vid = 0;
1417                 /* Override the physical port with the vPort. */
1418                 mlxsw_sp_port = mlxsw_sp_vport;
1419         } else {
1420                 vid = fid;
1421         }
1422
1423 do_fdb_op:
1424         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1425                                       adding, true);
1426         if (err) {
1427                 if (net_ratelimit())
1428                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1429                 return;
1430         }
1431
1432         if (!do_notification)
1433                 return;
1434         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1435                                     adding, mac, vid, mlxsw_sp_port->dev);
1436         return;
1437
1438 just_remove:
1439         adding = false;
1440         do_notification = false;
1441         goto do_fdb_op;
1442 }
1443
1444 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1445                                                 char *sfn_pl, int rec_index,
1446                                                 bool adding)
1447 {
1448         struct mlxsw_sp_port *mlxsw_sp_port;
1449         struct net_device *dev;
1450         char mac[ETH_ALEN];
1451         u16 lag_vid = 0;
1452         u16 lag_id;
1453         u16 vid, fid;
1454         bool do_notification = true;
1455         int err;
1456
1457         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1458         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1459         if (!mlxsw_sp_port) {
1460                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1461                 goto just_remove;
1462         }
1463
1464         if (mlxsw_sp_fid_is_vfid(fid)) {
1465                 struct mlxsw_sp_port *mlxsw_sp_vport;
1466
1467                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1468                                                                  fid);
1469                 if (!mlxsw_sp_vport) {
1470                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1471                         goto just_remove;
1472                 }
1473
1474                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1475                 dev = mlxsw_sp_vport->dev;
1476                 vid = 0;
1477                 /* Override the physical port with the vPort. */
1478                 mlxsw_sp_port = mlxsw_sp_vport;
1479         } else {
1480                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1481                 vid = fid;
1482         }
1483
1484 do_fdb_op:
1485         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1486                                           adding, true);
1487         if (err) {
1488                 if (net_ratelimit())
1489                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1490                 return;
1491         }
1492
1493         if (!do_notification)
1494                 return;
1495         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1496                                     vid, dev);
1497         return;
1498
1499 just_remove:
1500         adding = false;
1501         do_notification = false;
1502         goto do_fdb_op;
1503 }
1504
1505 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1506                                             char *sfn_pl, int rec_index)
1507 {
1508         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1509         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1510                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1511                                                 rec_index, true);
1512                 break;
1513         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1514                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1515                                                 rec_index, false);
1516                 break;
1517         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1518                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1519                                                     rec_index, true);
1520                 break;
1521         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1522                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1523                                                     rec_index, false);
1524                 break;
1525         }
1526 }
1527
1528 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1529 {
1530         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1531                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1532 }
1533
1534 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1535 {
1536         struct mlxsw_sp *mlxsw_sp;
1537         char *sfn_pl;
1538         u8 num_rec;
1539         int i;
1540         int err;
1541
1542         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1543         if (!sfn_pl)
1544                 return;
1545
1546         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1547
1548         rtnl_lock();
1549         mlxsw_reg_sfn_pack(sfn_pl);
1550         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1551         if (err) {
1552                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1553                 goto out;
1554         }
1555         num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1556         for (i = 0; i < num_rec; i++)
1557                 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1558
1559 out:
1560         rtnl_unlock();
1561         kfree(sfn_pl);
1562         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1563 }
1564
1565 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1566 {
1567         int err;
1568
1569         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1570         if (err) {
1571                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1572                 return err;
1573         }
1574         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1575         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1576         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1577         return 0;
1578 }
1579
1580 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1581 {
1582         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1583 }
1584
1585 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1586 {
1587         return mlxsw_sp_fdb_init(mlxsw_sp);
1588 }
1589
1590 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1591 {
1592         mlxsw_sp_fdb_fini(mlxsw_sp);
1593 }
1594
1595 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1596 {
1597         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1598 }
1599
1600 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1601 {
1602 }