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

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
   3  * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
   5  * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
   6  * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the names of the copyright holders nor the names of its
  17  *    contributors may be used to endorse or promote products derived from
  18  *    this software without specific prior written permission.
  19  *
  20  * Alternatively, this software may be distributed under the terms of the
  21  * GNU General Public License ("GPL") version 2 as published by the Free
  22  * Software Foundation.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #include <linux/kernel.h>
  38 #include <linux/types.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/slab.h>
  42 #include <linux/device.h>
  43 #include <linux/skbuff.h>
  44 #include <linux/if_vlan.h>
  45 #include <linux/if_bridge.h>
  46 #include <linux/workqueue.h>
  47 #include <linux/jiffies.h>
  48 #include <linux/rtnetlink.h>
  49 #include <net/switchdev.h>
  50
  51 #include "spectrum.h"
  52 #include "core.h"
  53 #include "reg.h"
  54
  55 static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
  56                                         u16 vid)
  57 {
  58         struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
  59         u16 fid = vid;
  60
  61         fid = f ? f->fid : fid;
  62
  63         if (!fid)
  64                 fid = mlxsw_sp_port->pvid;
  65
  66         return fid;
  67 }
  68
  69 static struct mlxsw_sp_port *
  70 mlxsw_sp_port_orig_get(struct net_device *dev,
  71                        struct mlxsw_sp_port *mlxsw_sp_port)
  72 {
  73         struct mlxsw_sp_port *mlxsw_sp_vport;
  74         u16 vid;
  75
  76         if (!is_vlan_dev(dev))
  77                 return mlxsw_sp_port;
  78
  79         vid = vlan_dev_vlan_id(dev);
  80         mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
  81         WARN_ON(!mlxsw_sp_vport);
  82
  83         return mlxsw_sp_vport;
  84 }
  85
  86 static int mlxsw_sp_port_attr_get(struct net_device *dev,
  87                                   struct switchdev_attr *attr)
  88 {
  89         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
  90         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  91
  92         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
  93         if (!mlxsw_sp_port)
  94                 return -EINVAL;
  95
  96         switch (attr->id) {
  97         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
  98                 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
  99                 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
 100                        attr->u.ppid.id_len);
 101                 break;
 102         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 103                 attr->u.brport_flags =
 104                         (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
 105                         (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
 106                         (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
 107                 break;
 108         default:
 109                 return -EOPNOTSUPP;
 110         }
 111
 112         return 0;
 113 }
 114
 115 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 116                                        u8 state)
 117 {
 118         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 119         enum mlxsw_reg_spms_state spms_state;
 120         char *spms_pl;
 121         u16 vid;
 122         int err;
 123
 124         switch (state) {
 125         case BR_STATE_FORWARDING:
 126                 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
 127                 break;
 128         case BR_STATE_LEARNING:
 129                 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
 130                 break;
 131         case BR_STATE_LISTENING: /* fall-through */
 132         case BR_STATE_DISABLED: /* fall-through */
 133         case BR_STATE_BLOCKING:
 134                 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
 135                 break;
 136         default:
 137                 BUG();
 138         }
 139
 140         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 141         if (!spms_pl)
 142                 return -ENOMEM;
 143         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 144
 145         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 146                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 147                 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 148         } else {
 149                 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 150                         mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 151         }
 152
 153         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 154         kfree(spms_pl);
 155         return err;
 156 }
 157
 158 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 159                                             struct switchdev_trans *trans,
 160                                             u8 state)
 161 {
 162         if (switchdev_trans_ph_prepare(trans))
 163                 return 0;
 164
 165         mlxsw_sp_port->stp_state = state;
 166         return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
 167 }
 168
 169 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 170                                      u16 idx_begin, u16 idx_end, bool set,
 171                                      bool only_uc)
 172 {
 173         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 174         u16 local_port = mlxsw_sp_port->local_port;
 175         enum mlxsw_flood_table_type table_type;
 176         u16 range = idx_end - idx_begin + 1;
 177         char *sftr_pl;
 178         int err;
 179
 180         if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
 181                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
 182         else
 183                 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
 184
 185         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 186         if (!sftr_pl)
 187                 return -ENOMEM;
 188
 189         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 190                             table_type, range, local_port, set);
 191         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 192         if (err)
 193                 goto buffer_out;
 194
 195         /* Flooding control allows one to decide whether a given port will
 196          * flood unicast traffic for which there is no FDB entry.
 197          */
 198         if (only_uc)
 199                 goto buffer_out;
 200
 201         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
 202                             table_type, range, local_port, set);
 203         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 204         if (err)
 205                 goto err_flood_bm_set;
 206         else
 207                 goto buffer_out;
 208
 209 err_flood_bm_set:
 210         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
 211                             table_type, range, local_port, !set);
 212         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 213 buffer_out:
 214         kfree(sftr_pl);
 215         return err;
 216 }
 217
 218 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 219                                       bool set)
 220 {
 221         struct net_device *dev = mlxsw_sp_port->dev;
 222         u16 vid, last_visited_vid;
 223         int err;
 224
 225         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 226                 u16 fid = mlxsw_sp_vport_fid_get(mlxsw_sp_port)->fid;
 227                 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
 228
 229                 return  __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
 230                                                   set, true);
 231         }
 232
 233         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 234                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 235                                                 true);
 236                 if (err) {
 237                         last_visited_vid = vid;
 238                         goto err_port_flood_set;
 239                 }
 240         }
 241
 242         return 0;
 243
 244 err_port_flood_set:
 245         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 246                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 247         netdev_err(dev, "Failed to configure unicast flooding\n");
 248         return err;
 249 }
 250
 251 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
 252                              bool set)
 253 {
 254         u16 vfid;
 255
 256         /* In case of vFIDs, index into the flooding table is relative to
 257          * the start of the vFIDs range.
 258          */
 259         vfid = mlxsw_sp_fid_to_vfid(fid);
 260         return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
 261                                          false);
 262 }
 263
 264 static int mlxsw_sp_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 265                                       bool set)
 266 {
 267         u16 vid;
 268         int err;
 269
 270         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 271                 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 272
 273                 return __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 274                                                         set);
 275         }
 276
 277         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 278                 err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid,
 279                                                        set);
 280                 if (err)
 281                         goto err_port_vid_learning_set;
 282         }
 283
 284         return 0;
 285
 286 err_port_vid_learning_set:
 287         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 288                 __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, vid, !set);
 289         return err;
 290 }
 291
 292 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 293                                            struct switchdev_trans *trans,
 294                                            unsigned long brport_flags)
 295 {
 296         unsigned long learning = mlxsw_sp_port->learning ? BR_LEARNING : 0;
 297         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 298         int err;
 299
 300         if (!mlxsw_sp_port->bridged)
 301                 return -EINVAL;
 302
 303         if (switchdev_trans_ph_prepare(trans))
 304                 return 0;
 305
 306         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 307                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port,
 308                                                  !mlxsw_sp_port->uc_flood);
 309                 if (err)
 310                         return err;
 311         }
 312
 313         if ((learning ^ brport_flags) & BR_LEARNING) {
 314                 err = mlxsw_sp_port_learning_set(mlxsw_sp_port,
 315                                                  !mlxsw_sp_port->learning);
 316                 if (err)
 317                         goto err_port_learning_set;
 318         }
 319
 320         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 321         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 322         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 323
 324         return 0;
 325
 326 err_port_learning_set:
 327         if ((uc_flood ^ brport_flags) & BR_FLOOD)
 328                 mlxsw_sp_port_uc_flood_set(mlxsw_sp_port,
 329                                            mlxsw_sp_port->uc_flood);
 330         return err;
 331 }
 332
 333 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 334 {
 335         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 336         int err;
 337
 338         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 339         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 340         if (err)
 341                 return err;
 342         mlxsw_sp->ageing_time = ageing_time;
 343         return 0;
 344 }
 345
 346 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 347                                             struct switchdev_trans *trans,
 348                                             unsigned long ageing_clock_t)
 349 {
 350         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 351         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 352         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 353
 354         if (switchdev_trans_ph_prepare(trans)) {
 355                 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
 356                     ageing_time > MLXSW_SP_MAX_AGEING_TIME)
 357                         return -ERANGE;
 358                 else
 359                         return 0;
 360         }
 361
 362         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 363 }
 364
 365 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
 366                                           struct switchdev_trans *trans,
 367                                           struct net_device *orig_dev,
 368                                           bool vlan_enabled)
 369 {
 370         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 371
 372         /* SWITCHDEV_TRANS_PREPARE phase */
 373         if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
 374                 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
 375                 return -EINVAL;
 376         }
 377
 378         return 0;
 379 }
 380
 381 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 382                                   const struct switchdev_attr *attr,
 383                                   struct switchdev_trans *trans)
 384 {
 385         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 386         int err = 0;
 387
 388         mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
 389         if (!mlxsw_sp_port)
 390                 return -EINVAL;
 391
 392         switch (attr->id) {
 393         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 394                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 395                                                        attr->u.stp_state);
 396                 break;
 397         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 398                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 399                                                       attr->u.brport_flags);
 400                 break;
 401         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 402                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 403                                                        attr->u.ageing_time);
 404                 break;
 405         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 406                 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
 407                                                      attr->orig_dev,
 408                                                      attr->u.vlan_filtering);
 409                 break;
 410         default:
 411                 err = -EOPNOTSUPP;
 412                 break;
 413         }
 414
 415         return err;
 416 }
 417
 418 static int mlxsw_sp_fid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
 419 {
 420         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 421
 422         mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, fid);
 423         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 424 }
 425
 426 static int mlxsw_sp_fid_map(struct mlxsw_sp *mlxsw_sp, u16 fid, bool valid)
 427 {
 428         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 429         char svfa_pl[MLXSW_REG_SVFA_LEN];
 430
 431         mlxsw_reg_svfa_pack(svfa_pl, 0, mt, valid, fid, fid);
 432         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
 433 }
 434
 435 static struct mlxsw_sp_fid *mlxsw_sp_fid_alloc(u16 fid)
 436 {
 437         struct mlxsw_sp_fid *f;
 438
 439         f = kzalloc(sizeof(*f), GFP_KERNEL);
 440         if (!f)
 441                 return NULL;
 442
 443         f->fid = fid;
 444
 445         return f;
 446 }
 447
 448 struct mlxsw_sp_fid *mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 449 {
 450         struct mlxsw_sp_fid *f;
 451         int err;
 452
 453         err = mlxsw_sp_fid_op(mlxsw_sp, fid, true);
 454         if (err)
 455                 return ERR_PTR(err);
 456
 457         /* Although all the ports member in the FID might be using a
 458          * {Port, VID} to FID mapping, we create a global VID-to-FID
 459          * mapping. This allows a port to transition to VLAN mode,
 460          * knowing the global mapping exists.
 461          */
 462         err = mlxsw_sp_fid_map(mlxsw_sp, fid, true);
 463         if (err)
 464                 goto err_fid_map;
 465
 466         f = mlxsw_sp_fid_alloc(fid);
 467         if (!f) {
 468                 err = -ENOMEM;
 469                 goto err_allocate_fid;
 470         }
 471
 472         list_add(&f->list, &mlxsw_sp->fids);
 473
 474         return f;
 475
 476 err_allocate_fid:
 477         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 478 err_fid_map:
 479         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 480         return ERR_PTR(err);
 481 }
 482
 483 void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *f)
 484 {
 485         u16 fid = f->fid;
 486
 487         list_del(&f->list);
 488
 489         if (f->r)
 490                 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
 491
 492         kfree(f);
 493
 494         mlxsw_sp_fid_map(mlxsw_sp, fid, false);
 495
 496         mlxsw_sp_fid_op(mlxsw_sp, fid, false);
 497 }
 498
 499 static int __mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 500                                     u16 fid)
 501 {
 502         struct mlxsw_sp_fid *f;
 503
 504         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 505         if (!f) {
 506                 f = mlxsw_sp_fid_create(mlxsw_sp_port->mlxsw_sp, fid);
 507                 if (IS_ERR(f))
 508                         return PTR_ERR(f);
 509         }
 510
 511         f->ref_count++;
 512
 513         netdev_dbg(mlxsw_sp_port->dev, "Joined FID=%d\n", fid);
 514
 515         return 0;
 516 }
 517
 518 static void __mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 519                                       u16 fid)
 520 {
 521         struct mlxsw_sp_fid *f;
 522
 523         f = mlxsw_sp_fid_find(mlxsw_sp_port->mlxsw_sp, fid);
 524         if (WARN_ON(!f))
 525                 return;
 526
 527         netdev_dbg(mlxsw_sp_port->dev, "Left FID=%d\n", fid);
 528
 529         mlxsw_sp_port_fdb_flush(mlxsw_sp_port, fid);
 530
 531         if (--f->ref_count == 0)
 532                 mlxsw_sp_fid_destroy(mlxsw_sp_port->mlxsw_sp, f);
 533 }
 534
 535 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid,
 536                                  bool valid)
 537 {
 538         enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 539
 540         /* If port doesn't have vPorts, then it can use the global
 541          * VID-to-FID mapping.
 542          */
 543         if (list_empty(&mlxsw_sp_port->vports_list))
 544                 return 0;
 545
 546         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, valid, fid, fid);
 547 }
 548
 549 static int mlxsw_sp_port_fid_join(struct mlxsw_sp_port *mlxsw_sp_port,
 550                                   u16 fid_begin, u16 fid_end)
 551 {
 552         int fid, err;
 553
 554         for (fid = fid_begin; fid <= fid_end; fid++) {
 555                 err = __mlxsw_sp_port_fid_join(mlxsw_sp_port, fid);
 556                 if (err)
 557                         goto err_port_fid_join;
 558         }
 559
 560         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end,
 561                                         true, false);
 562         if (err)
 563                 goto err_port_flood_set;
 564
 565         for (fid = fid_begin; fid <= fid_end; fid++) {
 566                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, true);
 567                 if (err)
 568                         goto err_port_fid_map;
 569         }
 570
 571         return 0;
 572
 573 err_port_fid_map:
 574         for (fid--; fid >= fid_begin; fid--)
 575                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 576         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 577                                   false);
 578 err_port_flood_set:
 579         fid = fid_end;
 580 err_port_fid_join:
 581         for (fid--; fid >= fid_begin; fid--)
 582                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 583         return err;
 584 }
 585
 586 static void mlxsw_sp_port_fid_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 587                                     u16 fid_begin, u16 fid_end)
 588 {
 589         int fid;
 590
 591         for (fid = fid_begin; fid <= fid_end; fid++)
 592                 mlxsw_sp_port_fid_map(mlxsw_sp_port, fid, false);
 593
 594         __mlxsw_sp_port_flood_set(mlxsw_sp_port, fid_begin, fid_end, false,
 595                                   false);
 596
 597         for (fid = fid_begin; fid <= fid_end; fid++)
 598                 __mlxsw_sp_port_fid_leave(mlxsw_sp_port, fid);
 599 }
 600
 601 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
 602                                     u16 vid)
 603 {
 604         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 605         char spvid_pl[MLXSW_REG_SPVID_LEN];
 606
 607         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 608         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 609 }
 610
 611 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
 612                                             bool allow)
 613 {
 614         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 615         char spaft_pl[MLXSW_REG_SPAFT_LEN];
 616
 617         mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
 618         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
 619 }
 620
 621 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 622 {
 623         struct net_device *dev = mlxsw_sp_port->dev;
 624         int err;
 625
 626         if (!vid) {
 627                 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
 628                 if (err) {
 629                         netdev_err(dev, "Failed to disallow untagged traffic\n");
 630                         return err;
 631                 }
 632         } else {
 633                 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 634                 if (err) {
 635                         netdev_err(dev, "Failed to set PVID\n");
 636                         return err;
 637                 }
 638
 639                 /* Only allow if not already allowed. */
 640                 if (!mlxsw_sp_port->pvid) {
 641                         err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
 642                                                                true);
 643                         if (err) {
 644                                 netdev_err(dev, "Failed to allow untagged traffic\n");
 645                                 goto err_port_allow_untagged_set;
 646                         }
 647                 }
 648         }
 649
 650         mlxsw_sp_port->pvid = vid;
 651         return 0;
 652
 653 err_port_allow_untagged_set:
 654         __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
 655         return err;
 656 }
 657
 658 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
 659                                      u16 vid_begin, u16 vid_end, bool is_member,
 660                                      bool untagged)
 661 {
 662         u16 vid, vid_e;
 663         int err;
 664
 665         for (vid = vid_begin; vid <= vid_end;
 666              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 667                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 668                             vid_end);
 669
 670                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 671                                              is_member, untagged);
 672                 if (err)
 673                         return err;
 674         }
 675
 676         return 0;
 677 }
 678
 679 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
 680                                           u16 vid_begin, u16 vid_end,
 681                                           bool learn_enable)
 682 {
 683         u16 vid, vid_e;
 684         int err;
 685
 686         for (vid = vid_begin; vid <= vid_end;
 687              vid += MLXSW_REG_SPVMLR_REC_MAX_COUNT) {
 688                 vid_e = min((u16) (vid + MLXSW_REG_SPVMLR_REC_MAX_COUNT - 1),
 689                             vid_end);
 690
 691                 err = __mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid,
 692                                                        vid_e, learn_enable);
 693                 if (err)
 694                         return err;
 695         }
 696
 697         return 0;
 698 }
 699
 700 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 701                                      u16 vid_begin, u16 vid_end,
 702                                      bool flag_untagged, bool flag_pvid)
 703 {
 704         struct net_device *dev = mlxsw_sp_port->dev;
 705         u16 vid, old_pvid;
 706         int err;
 707
 708         if (!mlxsw_sp_port->bridged)
 709                 return -EINVAL;
 710
 711         err = mlxsw_sp_port_fid_join(mlxsw_sp_port, vid_begin, vid_end);
 712         if (err) {
 713                 netdev_err(dev, "Failed to join FIDs\n");
 714                 return err;
 715         }
 716
 717         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 718                                         true, flag_untagged);
 719         if (err) {
 720                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 721                            vid_end);
 722                 goto err_port_vlans_set;
 723         }
 724
 725         old_pvid = mlxsw_sp_port->pvid;
 726         if (flag_pvid && old_pvid != vid_begin) {
 727                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 728                 if (err) {
 729                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 730                         goto err_port_pvid_set;
 731                 }
 732         } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
 733                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
 734                 if (err) {
 735                         netdev_err(dev, "Unable to del PVID\n");
 736                         goto err_port_pvid_set;
 737                 }
 738         }
 739
 740         err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
 741                                              mlxsw_sp_port->learning);
 742         if (err) {
 743                 netdev_err(dev, "Failed to set learning for VIDs %d-%d\n",
 744                            vid_begin, vid_end);
 745                 goto err_port_vid_learning_set;
 746         }
 747
 748         /* Changing activity bits only if HW operation succeded */
 749         for (vid = vid_begin; vid <= vid_end; vid++) {
 750                 set_bit(vid, mlxsw_sp_port->active_vlans);
 751                 if (flag_untagged)
 752                         set_bit(vid, mlxsw_sp_port->untagged_vlans);
 753                 else
 754                         clear_bit(vid, mlxsw_sp_port->untagged_vlans);
 755         }
 756
 757         /* STP state change must be done after we set active VLANs */
 758         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 759                                           mlxsw_sp_port->stp_state);
 760         if (err) {
 761                 netdev_err(dev, "Failed to set STP state\n");
 762                 goto err_port_stp_state_set;
 763         }
 764
 765         return 0;
 766
 767 err_port_stp_state_set:
 768         for (vid = vid_begin; vid <= vid_end; vid++)
 769                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 770         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
 771                                        false);
 772 err_port_vid_learning_set:
 773         if (old_pvid != mlxsw_sp_port->pvid)
 774                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 775 err_port_pvid_set:
 776         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 777                                   false);
 778 err_port_vlans_set:
 779         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 780         return err;
 781 }
 782
 783 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 784                                    const struct switchdev_obj_port_vlan *vlan,
 785                                    struct switchdev_trans *trans)
 786 {
 787         bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 788         bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 789
 790         if (switchdev_trans_ph_prepare(trans))
 791                 return 0;
 792
 793         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 794                                          vlan->vid_begin, vlan->vid_end,
 795                                          flag_untagged, flag_pvid);
 796 }
 797
 798 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 799 {
 800         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 801                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 802 }
 803
 804 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 805 {
 806         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 807                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 808 }
 809
 810 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 811                                      const char *mac, u16 fid, bool adding,
 812                                      enum mlxsw_reg_sfd_rec_action action,
 813                                      bool dynamic)
 814 {
 815         char *sfd_pl;
 816         int err;
 817
 818         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 819         if (!sfd_pl)
 820                 return -ENOMEM;
 821
 822         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 823         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 824                               mac, fid, action, local_port);
 825         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 826         kfree(sfd_pl);
 827
 828         return err;
 829 }
 830
 831 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 832                                    const char *mac, u16 fid, bool adding,
 833                                    bool dynamic)
 834 {
 835         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
 836                                          MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
 837 }
 838
 839 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
 840                         bool adding)
 841 {
 842         return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
 843                                          MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
 844                                          false);
 845 }
 846
 847 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 848                                        const char *mac, u16 fid, u16 lag_vid,
 849                                        bool adding, bool dynamic)
 850 {
 851         char *sfd_pl;
 852         int err;
 853
 854         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 855         if (!sfd_pl)
 856                 return -ENOMEM;
 857
 858         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 859         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 860                                   mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
 861                                   lag_vid, lag_id);
 862         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 863         kfree(sfd_pl);
 864
 865         return err;
 866 }
 867
 868 static int
 869 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 870                              const struct switchdev_obj_port_fdb *fdb,
 871                              struct switchdev_trans *trans)
 872 {
 873         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
 874         u16 lag_vid = 0;
 875
 876         if (switchdev_trans_ph_prepare(trans))
 877                 return 0;
 878
 879         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
 880                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
 881         }
 882
 883         if (!mlxsw_sp_port->lagged)
 884                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
 885                                                mlxsw_sp_port->local_port,
 886                                                fdb->addr, fid, true, false);
 887         else
 888                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 889                                                    mlxsw_sp_port->lag_id,
 890                                                    fdb->addr, fid, lag_vid,
 891                                                    true, false);
 892 }
 893
 894 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
 895                                 u16 fid, u16 mid, bool adding)
 896 {
 897         char *sfd_pl;
 898         int err;
 899
 900         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 901         if (!sfd_pl)
 902                 return -ENOMEM;
 903
 904         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 905         mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
 906                               MLXSW_REG_SFD_REC_ACTION_NOP, mid);
 907         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 908         kfree(sfd_pl);
 909         return err;
 910 }
 911
 912 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
 913                                   bool add, bool clear_all_ports)
 914 {
 915         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 916         char *smid_pl;
 917         int err, i;
 918
 919         smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
 920         if (!smid_pl)
 921                 return -ENOMEM;
 922
 923         mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
 924         if (clear_all_ports) {
 925                 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
 926                         if (mlxsw_sp->ports[i])
 927                                 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
 928         }
 929         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
 930         kfree(smid_pl);
 931         return err;
 932 }
 933
 934 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
 935                                               const unsigned char *addr,
 936                                               u16 vid)
 937 {
 938         struct mlxsw_sp_mid *mid;
 939
 940         list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
 941                 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
 942                         return mid;
 943         }
 944         return NULL;
 945 }
 946
 947 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
 948                                                 const unsigned char *addr,
 949                                                 u16 vid)
 950 {
 951         struct mlxsw_sp_mid *mid;
 952         u16 mid_idx;
 953
 954         mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
 955                                       MLXSW_SP_MID_MAX);
 956         if (mid_idx == MLXSW_SP_MID_MAX)
 957                 return NULL;
 958
 959         mid = kzalloc(sizeof(*mid), GFP_KERNEL);
 960         if (!mid)
 961                 return NULL;
 962
 963         set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
 964         ether_addr_copy(mid->addr, addr);
 965         mid->vid = vid;
 966         mid->mid = mid_idx;
 967         mid->ref_count = 0;
 968         list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
 969
 970         return mid;
 971 }
 972
 973 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
 974                                  struct mlxsw_sp_mid *mid)
 975 {
 976         if (--mid->ref_count == 0) {
 977                 list_del(&mid->list);
 978                 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
 979                 kfree(mid);
 980                 return 1;
 981         }
 982         return 0;
 983 }
 984
 985 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
 986                                  const struct switchdev_obj_port_mdb *mdb,
 987                                  struct switchdev_trans *trans)
 988 {
 989         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 990         struct net_device *dev = mlxsw_sp_port->dev;
 991         struct mlxsw_sp_mid *mid;
 992         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
 993         int err = 0;
 994
 995         if (switchdev_trans_ph_prepare(trans))
 996                 return 0;
 997
 998         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
 999         if (!mid) {
1000                 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
1001                 if (!mid) {
1002                         netdev_err(dev, "Unable to allocate MC group\n");
1003                         return -ENOMEM;
1004                 }
1005         }
1006         mid->ref_count++;
1007
1008         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
1009                                      mid->ref_count == 1);
1010         if (err) {
1011                 netdev_err(dev, "Unable to set SMID\n");
1012                 goto err_out;
1013         }
1014
1015         if (mid->ref_count == 1) {
1016                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
1017                                            true);
1018                 if (err) {
1019                         netdev_err(dev, "Unable to set MC SFD\n");
1020                         goto err_out;
1021                 }
1022         }
1023
1024         return 0;
1025
1026 err_out:
1027         __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
1028         return err;
1029 }
1030
1031 static int mlxsw_sp_port_obj_add(struct net_device *dev,
1032                                  const struct switchdev_obj *obj,
1033                                  struct switchdev_trans *trans)
1034 {
1035         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1036         int err = 0;
1037
1038         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1039         if (!mlxsw_sp_port)
1040                 return -EINVAL;
1041
1042         switch (obj->id) {
1043         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1044                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1045                         return 0;
1046
1047                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
1048                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
1049                                               trans);
1050                 break;
1051         case SWITCHDEV_OBJ_ID_IPV4_FIB:
1052                 err = mlxsw_sp_router_fib4_add(mlxsw_sp_port,
1053                                                SWITCHDEV_OBJ_IPV4_FIB(obj),
1054                                                trans);
1055                 break;
1056         case SWITCHDEV_OBJ_ID_PORT_FDB:
1057                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
1058                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
1059                                                    trans);
1060                 break;
1061         case SWITCHDEV_OBJ_ID_PORT_MDB:
1062                 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
1063                                             SWITCHDEV_OBJ_PORT_MDB(obj),
1064                                             trans);
1065                 break;
1066         default:
1067                 err = -EOPNOTSUPP;
1068                 break;
1069         }
1070
1071         return err;
1072 }
1073
1074 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1075                                      u16 vid_begin, u16 vid_end)
1076 {
1077         u16 vid, pvid;
1078
1079         if (!mlxsw_sp_port->bridged)
1080                 return -EINVAL;
1081
1082         mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid_begin, vid_end,
1083                                        false);
1084
1085         pvid = mlxsw_sp_port->pvid;
1086         if (pvid >= vid_begin && pvid <= vid_end)
1087                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
1088
1089         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
1090                                   false);
1091
1092         mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
1093
1094         /* Changing activity bits only if HW operation succeded */
1095         for (vid = vid_begin; vid <= vid_end; vid++)
1096                 clear_bit(vid, mlxsw_sp_port->active_vlans);
1097
1098         return 0;
1099 }
1100
1101 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
1102                                    const struct switchdev_obj_port_vlan *vlan)
1103 {
1104         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
1105                                          vlan->vid_end);
1106 }
1107
1108 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1109 {
1110         u16 vid;
1111
1112         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1113                 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
1114 }
1115
1116 static int
1117 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1118                              const struct switchdev_obj_port_fdb *fdb)
1119 {
1120         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1121         u16 lag_vid = 0;
1122
1123         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1124                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1125         }
1126
1127         if (!mlxsw_sp_port->lagged)
1128                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1129                                                mlxsw_sp_port->local_port,
1130                                                fdb->addr, fid,
1131                                                false, false);
1132         else
1133                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1134                                                    mlxsw_sp_port->lag_id,
1135                                                    fdb->addr, fid, lag_vid,
1136                                                    false, false);
1137 }
1138
1139 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1140                                  const struct switchdev_obj_port_mdb *mdb)
1141 {
1142         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1143         struct net_device *dev = mlxsw_sp_port->dev;
1144         struct mlxsw_sp_mid *mid;
1145         u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1146         u16 mid_idx;
1147         int err = 0;
1148
1149         mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
1150         if (!mid) {
1151                 netdev_err(dev, "Unable to remove port from MC DB\n");
1152                 return -EINVAL;
1153         }
1154
1155         err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1156         if (err)
1157                 netdev_err(dev, "Unable to remove port from SMID\n");
1158
1159         mid_idx = mid->mid;
1160         if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1161                 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1162                                            false);
1163                 if (err)
1164                         netdev_err(dev, "Unable to remove MC SFD\n");
1165         }
1166
1167         return err;
1168 }
1169
1170 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1171                                  const struct switchdev_obj *obj)
1172 {
1173         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1174         int err = 0;
1175
1176         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1177         if (!mlxsw_sp_port)
1178                 return -EINVAL;
1179
1180         switch (obj->id) {
1181         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1182                 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1183                         return 0;
1184
1185                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1186                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
1187                 break;
1188         case SWITCHDEV_OBJ_ID_IPV4_FIB:
1189                 err = mlxsw_sp_router_fib4_del(mlxsw_sp_port,
1190                                                SWITCHDEV_OBJ_IPV4_FIB(obj));
1191                 break;
1192         case SWITCHDEV_OBJ_ID_PORT_FDB:
1193                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1194                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
1195                 break;
1196         case SWITCHDEV_OBJ_ID_PORT_MDB:
1197                 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1198                                             SWITCHDEV_OBJ_PORT_MDB(obj));
1199                 break;
1200         default:
1201                 err = -EOPNOTSUPP;
1202                 break;
1203         }
1204
1205         return err;
1206 }
1207
1208 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1209                                                    u16 lag_id)
1210 {
1211         struct mlxsw_sp_port *mlxsw_sp_port;
1212         int i;
1213
1214         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
1215                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1216                 if (mlxsw_sp_port)
1217                         return mlxsw_sp_port;
1218         }
1219         return NULL;
1220 }
1221
1222 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1223                                   struct switchdev_obj_port_fdb *fdb,
1224                                   switchdev_obj_dump_cb_t *cb,
1225                                   struct net_device *orig_dev)
1226 {
1227         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1228         struct mlxsw_sp_port *tmp;
1229         struct mlxsw_sp_fid *f;
1230         u16 vport_fid;
1231         char *sfd_pl;
1232         char mac[ETH_ALEN];
1233         u16 fid;
1234         u8 local_port;
1235         u16 lag_id;
1236         u8 num_rec;
1237         int stored_err = 0;
1238         int i;
1239         int err;
1240
1241         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1242         if (!sfd_pl)
1243                 return -ENOMEM;
1244
1245         f = mlxsw_sp_vport_fid_get(mlxsw_sp_port);
1246         vport_fid = f ? f->fid : 0;
1247
1248         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1249         do {
1250                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1251                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1252                 if (err)
1253                         goto out;
1254
1255                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1256
1257                 /* Even in case of error, we have to run the dump to the end
1258                  * so the session in firmware is finished.
1259                  */
1260                 if (stored_err)
1261                         continue;
1262
1263                 for (i = 0; i < num_rec; i++) {
1264                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1265                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1266                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1267                                                         &local_port);
1268                                 if (local_port == mlxsw_sp_port->local_port) {
1269                                         if (vport_fid && vport_fid == fid)
1270                                                 fdb->vid = 0;
1271                                         else if (!vport_fid &&
1272                                                  !mlxsw_sp_fid_is_vfid(fid))
1273                                                 fdb->vid = fid;
1274                                         else
1275                                                 continue;
1276                                         ether_addr_copy(fdb->addr, mac);
1277                                         fdb->ndm_state = NUD_REACHABLE;
1278                                         err = cb(&fdb->obj);
1279                                         if (err)
1280                                                 stored_err = err;
1281                                 }
1282                                 break;
1283                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1284                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1285                                                             mac, &fid, &lag_id);
1286                                 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1287                                 if (tmp && tmp->local_port ==
1288                                     mlxsw_sp_port->local_port) {
1289                                         /* LAG records can only point to LAG
1290                                          * devices or VLAN devices on top.
1291                                          */
1292                                         if (!netif_is_lag_master(orig_dev) &&
1293                                             !is_vlan_dev(orig_dev))
1294                                                 continue;
1295                                         if (vport_fid && vport_fid == fid)
1296                                                 fdb->vid = 0;
1297                                         else if (!vport_fid &&
1298                                                  !mlxsw_sp_fid_is_vfid(fid))
1299                                                 fdb->vid = fid;
1300                                         else
1301                                                 continue;
1302                                         ether_addr_copy(fdb->addr, mac);
1303                                         fdb->ndm_state = NUD_REACHABLE;
1304                                         err = cb(&fdb->obj);
1305                                         if (err)
1306                                                 stored_err = err;
1307                                 }
1308                                 break;
1309                         }
1310                 }
1311         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1312
1313 out:
1314         kfree(sfd_pl);
1315         return stored_err ? stored_err : err;
1316 }
1317
1318 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1319                                    struct switchdev_obj_port_vlan *vlan,
1320                                    switchdev_obj_dump_cb_t *cb)
1321 {
1322         u16 vid;
1323         int err = 0;
1324
1325         if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1326                 vlan->flags = 0;
1327                 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1328                 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1329                 return cb(&vlan->obj);
1330         }
1331
1332         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1333                 vlan->flags = 0;
1334                 if (vid == mlxsw_sp_port->pvid)
1335                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1336                 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1337                         vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1338                 vlan->vid_begin = vid;
1339                 vlan->vid_end = vid;
1340                 err = cb(&vlan->obj);
1341                 if (err)
1342                         break;
1343         }
1344         return err;
1345 }
1346
1347 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1348                                   struct switchdev_obj *obj,
1349                                   switchdev_obj_dump_cb_t *cb)
1350 {
1351         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1352         int err = 0;
1353
1354         mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1355         if (!mlxsw_sp_port)
1356                 return -EINVAL;
1357
1358         switch (obj->id) {
1359         case SWITCHDEV_OBJ_ID_PORT_VLAN:
1360                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1361                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1362                 break;
1363         case SWITCHDEV_OBJ_ID_PORT_FDB:
1364                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1365                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1366                                              obj->orig_dev);
1367                 break;
1368         default:
1369                 err = -EOPNOTSUPP;
1370                 break;
1371         }
1372
1373         return err;
1374 }
1375
1376 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1377         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
1378         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
1379         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
1380         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
1381         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
1382 };
1383
1384 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1385                                         char *mac, u16 vid,
1386                                         struct net_device *dev)
1387 {
1388         struct switchdev_notifier_fdb_info info;
1389         unsigned long notifier_type;
1390
1391         if (learning_sync) {
1392                 info.addr = mac;
1393                 info.vid = vid;
1394                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1395                 call_switchdev_notifiers(notifier_type, dev, &info.info);
1396         }
1397 }
1398
1399 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1400                                             char *sfn_pl, int rec_index,
1401                                             bool adding)
1402 {
1403         struct mlxsw_sp_port *mlxsw_sp_port;
1404         char mac[ETH_ALEN];
1405         u8 local_port;
1406         u16 vid, fid;
1407         bool do_notification = true;
1408         int err;
1409
1410         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1411         mlxsw_sp_port = mlxsw_sp->ports[local_port];
1412         if (!mlxsw_sp_port) {
1413                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1414                 goto just_remove;
1415         }
1416
1417         if (mlxsw_sp_fid_is_vfid(fid)) {
1418                 struct mlxsw_sp_port *mlxsw_sp_vport;
1419
1420                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1421                                                                  fid);
1422                 if (!mlxsw_sp_vport) {
1423                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1424                         goto just_remove;
1425                 }
1426                 vid = 0;
1427                 /* Override the physical port with the vPort. */
1428                 mlxsw_sp_port = mlxsw_sp_vport;
1429         } else {
1430                 vid = fid;
1431         }
1432
1433 do_fdb_op:
1434         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1435                                       adding, true);
1436         if (err) {
1437                 if (net_ratelimit())
1438                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1439                 return;
1440         }
1441
1442         if (!do_notification)
1443                 return;
1444         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1445                                     adding, mac, vid, mlxsw_sp_port->dev);
1446         return;
1447
1448 just_remove:
1449         adding = false;
1450         do_notification = false;
1451         goto do_fdb_op;
1452 }
1453
1454 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1455                                                 char *sfn_pl, int rec_index,
1456                                                 bool adding)
1457 {
1458         struct mlxsw_sp_port *mlxsw_sp_port;
1459         struct net_device *dev;
1460         char mac[ETH_ALEN];
1461         u16 lag_vid = 0;
1462         u16 lag_id;
1463         u16 vid, fid;
1464         bool do_notification = true;
1465         int err;
1466
1467         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1468         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1469         if (!mlxsw_sp_port) {
1470                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1471                 goto just_remove;
1472         }
1473
1474         if (mlxsw_sp_fid_is_vfid(fid)) {
1475                 struct mlxsw_sp_port *mlxsw_sp_vport;
1476
1477                 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_fid(mlxsw_sp_port,
1478                                                                  fid);
1479                 if (!mlxsw_sp_vport) {
1480                         netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1481                         goto just_remove;
1482                 }
1483
1484                 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1485                 dev = mlxsw_sp_vport->dev;
1486                 vid = 0;
1487                 /* Override the physical port with the vPort. */
1488                 mlxsw_sp_port = mlxsw_sp_vport;
1489         } else {
1490                 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1491                 vid = fid;
1492         }
1493
1494 do_fdb_op:
1495         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1496                                           adding, true);
1497         if (err) {
1498                 if (net_ratelimit())
1499                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1500                 return;
1501         }
1502
1503         if (!do_notification)
1504                 return;
1505         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1506                                     vid, dev);
1507         return;
1508
1509 just_remove:
1510         adding = false;
1511         do_notification = false;
1512         goto do_fdb_op;
1513 }
1514
1515 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1516                                             char *sfn_pl, int rec_index)
1517 {
1518         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1519         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1520                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1521                                                 rec_index, true);
1522                 break;
1523         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1524                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1525                                                 rec_index, false);
1526                 break;
1527         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1528                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1529                                                     rec_index, true);
1530                 break;
1531         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1532                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1533                                                     rec_index, false);
1534                 break;
1535         }
1536 }
1537
1538 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1539 {
1540         mlxsw_core_schedule_dw(&mlxsw_sp->fdb_notify.dw,
1541                                msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1542 }
1543
1544 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1545 {
1546         struct mlxsw_sp *mlxsw_sp;
1547         char *sfn_pl;
1548         u8 num_rec;
1549         int i;
1550         int err;
1551
1552         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1553         if (!sfn_pl)
1554                 return;
1555
1556         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1557
1558         rtnl_lock();
1559         mlxsw_reg_sfn_pack(sfn_pl);
1560         err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1561         if (err) {
1562                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1563                 goto out;
1564         }
1565         num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1566         for (i = 0; i < num_rec; i++)
1567                 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1568
1569 out:
1570         rtnl_unlock();
1571         kfree(sfn_pl);
1572         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1573 }
1574
1575 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1576 {
1577         int err;
1578
1579         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1580         if (err) {
1581                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1582                 return err;
1583         }
1584         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1585         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1586         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1587         return 0;
1588 }
1589
1590 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1591 {
1592         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1593 }
1594
1595 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1596 {
1597         return mlxsw_sp_fdb_init(mlxsw_sp);
1598 }
1599
1600 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1601 {
1602         mlxsw_sp_fdb_fini(mlxsw_sp);
1603 }
1604
1605 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1606 {
1607         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1608 }
1609
1610 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1611 {
1612 }