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