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