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