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 <net/switchdev.h>
  49
  50 #include "spectrum.h"
  51 #include "core.h"
  52 #include "reg.h"
  53
  54 static int mlxsw_sp_port_attr_get(struct net_device *dev,
  55                                   struct switchdev_attr *attr)
  56 {
  57         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
  58         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  59
  60         switch (attr->id) {
  61         case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
  62                 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
  63                 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
  64                        attr->u.ppid.id_len);
  65                 break;
  66         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
  67                 attr->u.brport_flags =
  68                         (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
  69                         (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
  70                         (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
  71                 break;
  72         default:
  73                 return -EOPNOTSUPP;
  74         }
  75
  76         return 0;
  77 }
  78
  79 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
  80                                        u8 state)
  81 {
  82         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
  83         enum mlxsw_reg_spms_state spms_state;
  84         char *spms_pl;
  85         u16 vid;
  86         int err;
  87
  88         switch (state) {
  89         case BR_STATE_DISABLED: /* fall-through */
  90         case BR_STATE_FORWARDING:
  91                 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
  92                 break;
  93         case BR_STATE_LISTENING: /* fall-through */
  94         case BR_STATE_LEARNING:
  95                 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
  96                 break;
  97         case BR_STATE_BLOCKING:
  98                 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
  99                 break;
 100         default:
 101                 BUG();
 102         }
 103
 104         spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
 105         if (!spms_pl)
 106                 return -ENOMEM;
 107         mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
 108         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
 109                 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
 110
 111         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
 112         kfree(spms_pl);
 113         return err;
 114 }
 115
 116 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
 117                                             struct switchdev_trans *trans,
 118                                             u8 state)
 119 {
 120         if (switchdev_trans_ph_prepare(trans))
 121                 return 0;
 122
 123         mlxsw_sp_port->stp_state = state;
 124         return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
 125 }
 126
 127 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 128                                      u16 fid_begin, u16 fid_end, bool set,
 129                                      bool only_uc)
 130 {
 131         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 132         u16 range = fid_end - fid_begin + 1;
 133         char *sftr_pl;
 134         int err;
 135
 136         sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 137         if (!sftr_pl)
 138                 return -ENOMEM;
 139
 140         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, fid_begin,
 141                             MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
 142                             mlxsw_sp_port->local_port, set);
 143         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 144         if (err)
 145                 goto buffer_out;
 146
 147         /* Flooding control allows one to decide whether a given port will
 148          * flood unicast traffic for which there is no FDB entry.
 149          */
 150         if (only_uc)
 151                 goto buffer_out;
 152
 153         mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, fid_begin,
 154                             MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
 155                             mlxsw_sp_port->local_port, set);
 156         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
 157
 158 buffer_out:
 159         kfree(sftr_pl);
 160         return err;
 161 }
 162
 163 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
 164                                       bool set)
 165 {
 166         struct net_device *dev = mlxsw_sp_port->dev;
 167         u16 vid, last_visited_vid;
 168         int err;
 169
 170         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 171                 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
 172                                                 true);
 173                 if (err) {
 174                         last_visited_vid = vid;
 175                         goto err_port_flood_set;
 176                 }
 177         }
 178
 179         return 0;
 180
 181 err_port_flood_set:
 182         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
 183                 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
 184         netdev_err(dev, "Failed to configure unicast flooding\n");
 185         return err;
 186 }
 187
 188 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 189                                            struct switchdev_trans *trans,
 190                                            unsigned long brport_flags)
 191 {
 192         unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
 193         bool set;
 194         int err;
 195
 196         if (switchdev_trans_ph_prepare(trans))
 197                 return 0;
 198
 199         if ((uc_flood ^ brport_flags) & BR_FLOOD) {
 200                 set = mlxsw_sp_port->uc_flood ? false : true;
 201                 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
 202                 if (err)
 203                         return err;
 204         }
 205
 206         mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
 207         mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
 208         mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
 209
 210         return 0;
 211 }
 212
 213 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
 214 {
 215         char sfdat_pl[MLXSW_REG_SFDAT_LEN];
 216         int err;
 217
 218         mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
 219         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
 220         if (err)
 221                 return err;
 222         mlxsw_sp->ageing_time = ageing_time;
 223         return 0;
 224 }
 225
 226 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
 227                                             struct switchdev_trans *trans,
 228                                             unsigned long ageing_clock_t)
 229 {
 230         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 231         unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 232         u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
 233
 234         if (switchdev_trans_ph_prepare(trans))
 235                 return 0;
 236
 237         return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
 238 }
 239
 240 static int mlxsw_sp_port_attr_set(struct net_device *dev,
 241                                   const struct switchdev_attr *attr,
 242                                   struct switchdev_trans *trans)
 243 {
 244         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 245         int err = 0;
 246
 247         switch (attr->id) {
 248         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
 249                 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
 250                                                        attr->u.stp_state);
 251                 break;
 252         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
 253                 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
 254                                                       attr->u.brport_flags);
 255                 break;
 256         case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
 257                 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
 258                                                        attr->u.ageing_time);
 259                 break;
 260         default:
 261                 err = -EOPNOTSUPP;
 262                 break;
 263         }
 264
 265         return err;
 266 }
 267
 268 static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
 269 {
 270         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 271         char spvid_pl[MLXSW_REG_SPVID_LEN];
 272
 273         mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
 274         return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
 275 }
 276
 277 static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
 278 {
 279         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 280         int err;
 281
 282         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
 283         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 284
 285         if (err)
 286                 return err;
 287
 288         set_bit(fid, mlxsw_sp->active_fids);
 289         return 0;
 290 }
 291
 292 static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
 293 {
 294         char sfmr_pl[MLXSW_REG_SFMR_LEN];
 295
 296         clear_bit(fid, mlxsw_sp->active_fids);
 297
 298         mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
 299                             fid, fid);
 300         mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
 301 }
 302
 303 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
 304 {
 305         enum mlxsw_reg_svfa_mt mt;
 306
 307         if (mlxsw_sp_port->nr_vfids)
 308                 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 309         else
 310                 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 311
 312         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
 313 }
 314
 315 static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
 316 {
 317         enum mlxsw_reg_svfa_mt mt;
 318
 319         if (!mlxsw_sp_port->nr_vfids)
 320                 return 0;
 321
 322         mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
 323         return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
 324 }
 325
 326 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
 327                                   u16 vid_end)
 328 {
 329         u16 vid;
 330         int err;
 331
 332         for (vid = vid_begin; vid <= vid_end; vid++) {
 333                 err = mlxsw_sp_port_add_vid(dev, 0, vid);
 334                 if (err)
 335                         goto err_port_add_vid;
 336         }
 337         return 0;
 338
 339 err_port_add_vid:
 340         for (vid--; vid >= vid_begin; vid--)
 341                 mlxsw_sp_port_kill_vid(dev, 0, vid);
 342         return err;
 343 }
 344
 345 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 346                                      u16 vid_begin, u16 vid_end,
 347                                      bool flag_untagged, bool flag_pvid)
 348 {
 349         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 350         struct net_device *dev = mlxsw_sp_port->dev;
 351         enum mlxsw_reg_svfa_mt mt;
 352         u16 vid, vid_e;
 353         int err;
 354
 355         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 356          * not bridged, then packets ingressing through the port with
 357          * the specified VIDs will be directed to CPU.
 358          */
 359         if (!mlxsw_sp_port->bridged)
 360                 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
 361
 362         for (vid = vid_begin; vid <= vid_end; vid++) {
 363                 if (!test_bit(vid, mlxsw_sp->active_fids)) {
 364                         err = mlxsw_sp_fid_create(mlxsw_sp, vid);
 365                         if (err) {
 366                                 netdev_err(dev, "Failed to create FID=%d\n",
 367                                            vid);
 368                                 return err;
 369                         }
 370
 371                         /* When creating a FID, we set a VID to FID mapping
 372                          * regardless of the port's mode.
 373                          */
 374                         mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 375                         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
 376                                                            true, vid, vid);
 377                         if (err) {
 378                                 netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
 379                                            vid);
 380                                 return err;
 381                         }
 382                 }
 383
 384                 /* Set FID mapping according to port's mode */
 385                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
 386                 if (err) {
 387                         netdev_err(dev, "Failed to map FID=%d", vid);
 388                         return err;
 389                 }
 390         }
 391
 392         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 393                                         true, false);
 394         if (err) {
 395                 netdev_err(dev, "Failed to configure flooding\n");
 396                 return err;
 397         }
 398
 399         for (vid = vid_begin; vid <= vid_end;
 400              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 401                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 402                             vid_end);
 403
 404                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e, true,
 405                                              flag_untagged);
 406                 if (err) {
 407                         netdev_err(mlxsw_sp_port->dev, "Unable to add VIDs %d-%d\n",
 408                                    vid, vid_e);
 409                         return err;
 410                 }
 411         }
 412
 413         vid = vid_begin;
 414         if (flag_pvid && mlxsw_sp_port->pvid != vid) {
 415                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
 416                 if (err) {
 417                         netdev_err(mlxsw_sp_port->dev, "Unable to add PVID %d\n",
 418                                    vid);
 419                         return err;
 420                 }
 421                 mlxsw_sp_port->pvid = vid;
 422         }
 423
 424         /* Changing activity bits only if HW operation succeded */
 425         for (vid = vid_begin; vid <= vid_end; vid++)
 426                 set_bit(vid, mlxsw_sp_port->active_vlans);
 427
 428         return mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 429                                            mlxsw_sp_port->stp_state);
 430 }
 431
 432 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 433                                    const struct switchdev_obj_port_vlan *vlan,
 434                                    struct switchdev_trans *trans)
 435 {
 436         bool untagged_flag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 437         bool pvid_flag = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 438
 439         if (switchdev_trans_ph_prepare(trans))
 440                 return 0;
 441
 442         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 443                                          vlan->vid_begin, vlan->vid_end,
 444                                          untagged_flag, pvid_flag);
 445 }
 446
 447 static int mlxsw_sp_port_fdb_op(struct mlxsw_sp_port *mlxsw_sp_port,
 448                                 const char *mac, u16 vid, bool adding,
 449                                 bool dynamic)
 450 {
 451         enum mlxsw_reg_sfd_rec_policy policy;
 452         enum mlxsw_reg_sfd_op op;
 453         char *sfd_pl;
 454         int err;
 455
 456         if (!vid)
 457                 vid = mlxsw_sp_port->pvid;
 458
 459         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 460         if (!sfd_pl)
 461                 return -ENOMEM;
 462
 463         policy = dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 464                            MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 465         op = adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 466                       MLXSW_REG_SFD_OP_WRITE_REMOVE;
 467         mlxsw_reg_sfd_pack(sfd_pl, op, 0);
 468         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, policy,
 469                               mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
 470                               mlxsw_sp_port->local_port);
 471         err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sfd),
 472                               sfd_pl);
 473         kfree(sfd_pl);
 474
 475         return err;
 476 }
 477
 478 static int
 479 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 480                              const struct switchdev_obj_port_fdb *fdb,
 481                              struct switchdev_trans *trans)
 482 {
 483         if (switchdev_trans_ph_prepare(trans))
 484                 return 0;
 485
 486         return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
 487                                     true, false);
 488 }
 489
 490 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 491                                  const struct switchdev_obj *obj,
 492                                  struct switchdev_trans *trans)
 493 {
 494         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 495         int err = 0;
 496
 497         switch (obj->id) {
 498         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 499                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 500                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 501                                               trans);
 502                 break;
 503         case SWITCHDEV_OBJ_ID_PORT_FDB:
 504                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 505                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 506                                                    trans);
 507                 break;
 508         default:
 509                 err = -EOPNOTSUPP;
 510                 break;
 511         }
 512
 513         return err;
 514 }
 515
 516 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
 517                                    u16 vid_end)
 518 {
 519         u16 vid;
 520         int err;
 521
 522         for (vid = vid_begin; vid <= vid_end; vid++) {
 523                 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
 524                 if (err)
 525                         return err;
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 532                                      u16 vid_begin, u16 vid_end, bool init)
 533 {
 534         struct net_device *dev = mlxsw_sp_port->dev;
 535         u16 vid, vid_e;
 536         int err;
 537
 538         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 539          * not bridged, then prevent packets ingressing through the
 540          * port with the specified VIDs from being trapped to CPU.
 541          */
 542         if (!init && !mlxsw_sp_port->bridged)
 543                 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
 544
 545         for (vid = vid_begin; vid <= vid_end;
 546              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 547                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 548                             vid_end);
 549                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e, false,
 550                                              false);
 551                 if (err) {
 552                         netdev_err(mlxsw_sp_port->dev, "Unable to del VIDs %d-%d\n",
 553                                    vid, vid_e);
 554                         return err;
 555                 }
 556         }
 557
 558         if ((mlxsw_sp_port->pvid >= vid_begin) &&
 559             (mlxsw_sp_port->pvid <= vid_end)) {
 560                 /* Default VLAN is always 1 */
 561                 mlxsw_sp_port->pvid = 1;
 562                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port,
 563                                              mlxsw_sp_port->pvid);
 564                 if (err) {
 565                         netdev_err(mlxsw_sp_port->dev, "Unable to del PVID %d\n",
 566                                    vid);
 567                         return err;
 568                 }
 569         }
 570
 571         if (init)
 572                 goto out;
 573
 574         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 575                                         false, false);
 576         if (err) {
 577                 netdev_err(dev, "Failed to clear flooding\n");
 578                 return err;
 579         }
 580
 581         for (vid = vid_begin; vid <= vid_end; vid++) {
 582                 /* Remove FID mapping in case of Virtual mode */
 583                 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 584                 if (err) {
 585                         netdev_err(dev, "Failed to unmap FID=%d", vid);
 586                         return err;
 587                 }
 588         }
 589
 590 out:
 591         /* Changing activity bits only if HW operation succeded */
 592         for (vid = vid_begin; vid <= vid_end; vid++)
 593                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 594
 595         return 0;
 596 }
 597
 598 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 599                                    const struct switchdev_obj_port_vlan *vlan)
 600 {
 601         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 602                                          vlan->vid_begin, vlan->vid_end, false);
 603 }
 604
 605 static int
 606 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
 607                              const struct switchdev_obj_port_fdb *fdb)
 608 {
 609         return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
 610                                     false, false);
 611 }
 612
 613 static int mlxsw_sp_port_obj_del(struct net_device *dev,
 614                                  const struct switchdev_obj *obj)
 615 {
 616         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 617         int err = 0;
 618
 619         switch (obj->id) {
 620         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 621                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 622                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
 623                 break;
 624         case SWITCHDEV_OBJ_ID_PORT_FDB:
 625                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
 626                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
 627                 break;
 628         default:
 629                 err = -EOPNOTSUPP;
 630                 break;
 631         }
 632
 633         return err;
 634 }
 635
 636 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 637                                   struct switchdev_obj_port_fdb *fdb,
 638                                   switchdev_obj_dump_cb_t *cb)
 639 {
 640         char *sfd_pl;
 641         char mac[ETH_ALEN];
 642         u16 vid;
 643         u8 local_port;
 644         u8 num_rec;
 645         int stored_err = 0;
 646         int i;
 647         int err;
 648
 649         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 650         if (!sfd_pl)
 651                 return -ENOMEM;
 652
 653         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 654         do {
 655                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
 656                 err = mlxsw_reg_query(mlxsw_sp_port->mlxsw_sp->core,
 657                                       MLXSW_REG(sfd), sfd_pl);
 658                 if (err)
 659                         goto out;
 660
 661                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
 662
 663                 /* Even in case of error, we have to run the dump to the end
 664                  * so the session in firmware is finished.
 665                  */
 666                 if (stored_err)
 667                         continue;
 668
 669                 for (i = 0; i < num_rec; i++) {
 670                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
 671                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
 672                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &vid,
 673                                                         &local_port);
 674                                 if (local_port == mlxsw_sp_port->local_port) {
 675                                         ether_addr_copy(fdb->addr, mac);
 676                                         fdb->ndm_state = NUD_REACHABLE;
 677                                         fdb->vid = vid;
 678                                         err = cb(&fdb->obj);
 679                                         if (err)
 680                                                 stored_err = err;
 681                                 }
 682                         }
 683                 }
 684         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
 685
 686 out:
 687         kfree(sfd_pl);
 688         return stored_err ? stored_err : err;
 689 }
 690
 691 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 692                                    struct switchdev_obj_port_vlan *vlan,
 693                                    switchdev_obj_dump_cb_t *cb)
 694 {
 695         u16 vid;
 696         int err = 0;
 697
 698         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 699                 vlan->flags = 0;
 700                 if (vid == mlxsw_sp_port->pvid)
 701                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
 702                 vlan->vid_begin = vid;
 703                 vlan->vid_end = vid;
 704                 err = cb(&vlan->obj);
 705                 if (err)
 706                         break;
 707         }
 708         return err;
 709 }
 710
 711 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
 712                                   struct switchdev_obj *obj,
 713                                   switchdev_obj_dump_cb_t *cb)
 714 {
 715         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 716         int err = 0;
 717
 718         switch (obj->id) {
 719         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 720                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
 721                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
 722                 break;
 723         case SWITCHDEV_OBJ_ID_PORT_FDB:
 724                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
 725                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb);
 726                 break;
 727         default:
 728                 err = -EOPNOTSUPP;
 729                 break;
 730         }
 731
 732         return err;
 733 }
 734
 735 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
 736         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
 737         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
 738         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
 739         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
 740         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
 741 };
 742
 743 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
 744                                             char *sfn_pl, int rec_index,
 745                                             bool adding)
 746 {
 747         struct mlxsw_sp_port *mlxsw_sp_port;
 748         char mac[ETH_ALEN];
 749         u8 local_port;
 750         u16 vid;
 751         int err;
 752
 753         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &vid, &local_port);
 754         mlxsw_sp_port = mlxsw_sp->ports[local_port];
 755         if (!mlxsw_sp_port) {
 756                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
 757                 return;
 758         }
 759
 760         err = mlxsw_sp_port_fdb_op(mlxsw_sp_port, mac, vid,
 761                                    adding && mlxsw_sp_port->learning, true);
 762         if (err) {
 763                 if (net_ratelimit())
 764                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
 765                 return;
 766         }
 767
 768         if (mlxsw_sp_port->learning && mlxsw_sp_port->learning_sync) {
 769                 struct switchdev_notifier_fdb_info info;
 770                 unsigned long notifier_type;
 771
 772                 info.addr = mac;
 773                 info.vid = vid;
 774                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
 775                 call_switchdev_notifiers(notifier_type, mlxsw_sp_port->dev,
 776                                          &info.info);
 777         }
 778 }
 779
 780 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
 781                                             char *sfn_pl, int rec_index)
 782 {
 783         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
 784         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
 785                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
 786                                                 rec_index, true);
 787                 break;
 788         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
 789                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
 790                                                 rec_index, false);
 791                 break;
 792         }
 793 }
 794
 795 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
 796 {
 797         schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
 798                               msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
 799 }
 800
 801 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
 802 {
 803         struct mlxsw_sp *mlxsw_sp;
 804         char *sfn_pl;
 805         u8 num_rec;
 806         int i;
 807         int err;
 808
 809         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
 810         if (!sfn_pl)
 811                 return;
 812
 813         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
 814
 815         do {
 816                 mlxsw_reg_sfn_pack(sfn_pl);
 817                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
 818                 if (err) {
 819                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
 820                         break;
 821                 }
 822                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
 823                 for (i = 0; i < num_rec; i++)
 824                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
 825
 826         } while (num_rec);
 827
 828         kfree(sfn_pl);
 829         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
 830 }
 831
 832 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
 833 {
 834         int err;
 835
 836         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
 837         if (err) {
 838                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
 839                 return err;
 840         }
 841         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
 842         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
 843         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
 844         return 0;
 845 }
 846
 847 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
 848 {
 849         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
 850 }
 851
 852 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
 853 {
 854         u16 fid;
 855
 856         for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
 857                 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
 858 }
 859
 860 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
 861 {
 862         return mlxsw_sp_fdb_init(mlxsw_sp);
 863 }
 864
 865 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
 866 {
 867         mlxsw_sp_fdb_fini(mlxsw_sp);
 868         mlxsw_sp_fids_fini(mlxsw_sp);
 869 }
 870
 871 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
 872 {
 873         struct net_device *dev = mlxsw_sp_port->dev;
 874         int err;
 875
 876         /* Allow only untagged packets to ingress and tag them internally
 877          * with VID 1.
 878          */
 879         mlxsw_sp_port->pvid = 1;
 880         err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
 881         if (err) {
 882                 netdev_err(dev, "Unable to init VLANs\n");
 883                 return err;
 884         }
 885
 886         /* Add implicit VLAN interface in the device, so that untagged
 887          * packets will be classified to the default vFID.
 888          */
 889         err = mlxsw_sp_port_add_vid(dev, 0, 1);
 890         if (err)
 891                 netdev_err(dev, "Failed to configure default vFID\n");
 892
 893         return err;
 894 }
 895
 896 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
 897 {
 898         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
 899 }
 900
 901 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
 902 {
 903 }