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_set(struct mlxsw_sp_port *mlxsw_sp_port,
 346                                      u16 vid_begin, u16 vid_end, bool is_member,
 347                                      bool untagged)
 348 {
 349         u16 vid, vid_e;
 350         int err;
 351
 352         for (vid = vid_begin; vid <= vid_end;
 353              vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
 354                 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
 355                             vid_end);
 356
 357                 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
 358                                              is_member, untagged);
 359                 if (err)
 360                         return err;
 361         }
 362
 363         return 0;
 364 }
 365
 366 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 367                                      u16 vid_begin, u16 vid_end,
 368                                      bool flag_untagged, bool flag_pvid)
 369 {
 370         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 371         struct net_device *dev = mlxsw_sp_port->dev;
 372         u16 vid, last_visited_vid, old_pvid;
 373         enum mlxsw_reg_svfa_mt mt;
 374         int err;
 375
 376         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 377          * not bridged, then packets ingressing through the port with
 378          * the specified VIDs will be directed to CPU.
 379          */
 380         if (!mlxsw_sp_port->bridged)
 381                 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
 382
 383         for (vid = vid_begin; vid <= vid_end; vid++) {
 384                 if (!test_bit(vid, mlxsw_sp->active_fids)) {
 385                         err = mlxsw_sp_fid_create(mlxsw_sp, vid);
 386                         if (err) {
 387                                 netdev_err(dev, "Failed to create FID=%d\n",
 388                                            vid);
 389                                 return err;
 390                         }
 391
 392                         /* When creating a FID, we set a VID to FID mapping
 393                          * regardless of the port's mode.
 394                          */
 395                         mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
 396                         err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
 397                                                            true, vid, vid);
 398                         if (err) {
 399                                 netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
 400                                            vid);
 401                                 goto err_port_vid_to_fid_set;
 402                         }
 403                 }
 404         }
 405
 406         /* Set FID mapping according to port's mode */
 407         for (vid = vid_begin; vid <= vid_end; vid++) {
 408                 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
 409                 if (err) {
 410                         netdev_err(dev, "Failed to map FID=%d", vid);
 411                         last_visited_vid = --vid;
 412                         goto err_port_fid_map;
 413                 }
 414         }
 415
 416         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 417                                         true, false);
 418         if (err) {
 419                 netdev_err(dev, "Failed to configure flooding\n");
 420                 goto err_port_flood_set;
 421         }
 422
 423         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 424                                         true, flag_untagged);
 425         if (err) {
 426                 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
 427                            vid_end);
 428                 goto err_port_vlans_set;
 429         }
 430
 431         old_pvid = mlxsw_sp_port->pvid;
 432         if (flag_pvid && old_pvid != vid_begin) {
 433                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
 434                 if (err) {
 435                         netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
 436                         goto err_port_pvid_set;
 437                 }
 438                 mlxsw_sp_port->pvid = vid_begin;
 439         }
 440
 441         /* Changing activity bits only if HW operation succeded */
 442         for (vid = vid_begin; vid <= vid_end; vid++)
 443                 set_bit(vid, mlxsw_sp_port->active_vlans);
 444
 445         /* STP state change must be done after we set active VLANs */
 446         err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
 447                                           mlxsw_sp_port->stp_state);
 448         if (err) {
 449                 netdev_err(dev, "Failed to set STP state\n");
 450                 goto err_port_stp_state_set;
 451         }
 452
 453         return 0;
 454
 455 err_port_vid_to_fid_set:
 456         mlxsw_sp_fid_destroy(mlxsw_sp, vid);
 457         return err;
 458
 459 err_port_stp_state_set:
 460         for (vid = vid_begin; vid <= vid_end; vid++)
 461                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 462         if (old_pvid != mlxsw_sp_port->pvid)
 463                 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
 464 err_port_pvid_set:
 465         __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
 466                                   false);
 467 err_port_vlans_set:
 468         __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
 469                                   false);
 470 err_port_flood_set:
 471         last_visited_vid = vid_end;
 472 err_port_fid_map:
 473         for (vid = last_visited_vid; vid >= vid_begin; vid--)
 474                 mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 475         return err;
 476 }
 477
 478 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 479                                    const struct switchdev_obj_port_vlan *vlan,
 480                                    struct switchdev_trans *trans)
 481 {
 482         bool untagged_flag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
 483         bool pvid_flag = vlan->flags & BRIDGE_VLAN_INFO_PVID;
 484
 485         if (switchdev_trans_ph_prepare(trans))
 486                 return 0;
 487
 488         return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 489                                          vlan->vid_begin, vlan->vid_end,
 490                                          untagged_flag, pvid_flag);
 491 }
 492
 493 static int mlxsw_sp_port_fdb_op(struct mlxsw_sp_port *mlxsw_sp_port,
 494                                 const char *mac, u16 vid, bool adding,
 495                                 bool dynamic)
 496 {
 497         enum mlxsw_reg_sfd_rec_policy policy;
 498         enum mlxsw_reg_sfd_op op;
 499         char *sfd_pl;
 500         int err;
 501
 502         if (!vid)
 503                 vid = mlxsw_sp_port->pvid;
 504
 505         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 506         if (!sfd_pl)
 507                 return -ENOMEM;
 508
 509         policy = dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 510                            MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 511         op = adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 512                       MLXSW_REG_SFD_OP_WRITE_REMOVE;
 513         mlxsw_reg_sfd_pack(sfd_pl, op, 0);
 514         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, policy,
 515                               mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
 516                               mlxsw_sp_port->local_port);
 517         err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sfd),
 518                               sfd_pl);
 519         kfree(sfd_pl);
 520
 521         return err;
 522 }
 523
 524 static int
 525 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 526                              const struct switchdev_obj_port_fdb *fdb,
 527                              struct switchdev_trans *trans)
 528 {
 529         if (switchdev_trans_ph_prepare(trans))
 530                 return 0;
 531
 532         return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
 533                                     true, false);
 534 }
 535
 536 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 537                                  const struct switchdev_obj *obj,
 538                                  struct switchdev_trans *trans)
 539 {
 540         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 541         int err = 0;
 542
 543         switch (obj->id) {
 544         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 545                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 546                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 547                                               trans);
 548                 break;
 549         case SWITCHDEV_OBJ_ID_PORT_FDB:
 550                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 551                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 552                                                    trans);
 553                 break;
 554         default:
 555                 err = -EOPNOTSUPP;
 556                 break;
 557         }
 558
 559         return err;
 560 }
 561
 562 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
 563                                    u16 vid_end)
 564 {
 565         u16 vid;
 566         int err;
 567
 568         for (vid = vid_begin; vid <= vid_end; vid++) {
 569                 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
 570                 if (err)
 571                         return err;
 572         }
 573
 574         return 0;
 575 }
 576
 577 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 578                                      u16 vid_begin, u16 vid_end, bool init)
 579 {
 580         struct net_device *dev = mlxsw_sp_port->dev;
 581         u16 vid, pvid;
 582         int err;
 583
 584         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 585          * not bridged, then prevent packets ingressing through the
 586          * port with the specified VIDs from being trapped to CPU.
 587          */
 588         if (!init && !mlxsw_sp_port->bridged)
 589                 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
 590
 591         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 592                                         false, false);
 593         if (err) {
 594                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
 595                            vid_end);
 596                 return err;
 597         }
 598
 599         pvid = mlxsw_sp_port->pvid;
 600         if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
 601                 /* Default VLAN is always 1 */
 602                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
 603                 if (err) {
 604                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
 605                         return err;
 606                 }
 607                 mlxsw_sp_port->pvid = 1;
 608         }
 609
 610         if (init)
 611                 goto out;
 612
 613         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 614                                         false, false);
 615         if (err) {
 616                 netdev_err(dev, "Failed to clear flooding\n");
 617                 return err;
 618         }
 619
 620         for (vid = vid_begin; vid <= vid_end; vid++) {
 621                 /* Remove FID mapping in case of Virtual mode */
 622                 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 623                 if (err) {
 624                         netdev_err(dev, "Failed to unmap FID=%d", vid);
 625                         return err;
 626                 }
 627         }
 628
 629 out:
 630         /* Changing activity bits only if HW operation succeded */
 631         for (vid = vid_begin; vid <= vid_end; vid++)
 632                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 633
 634         return 0;
 635 }
 636
 637 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 638                                    const struct switchdev_obj_port_vlan *vlan)
 639 {
 640         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 641                                          vlan->vid_begin, vlan->vid_end, false);
 642 }
 643
 644 static int
 645 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
 646                              const struct switchdev_obj_port_fdb *fdb)
 647 {
 648         return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
 649                                     false, false);
 650 }
 651
 652 static int mlxsw_sp_port_obj_del(struct net_device *dev,
 653                                  const struct switchdev_obj *obj)
 654 {
 655         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 656         int err = 0;
 657
 658         switch (obj->id) {
 659         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 660                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 661                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
 662                 break;
 663         case SWITCHDEV_OBJ_ID_PORT_FDB:
 664                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
 665                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
 666                 break;
 667         default:
 668                 err = -EOPNOTSUPP;
 669                 break;
 670         }
 671
 672         return err;
 673 }
 674
 675 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 676                                   struct switchdev_obj_port_fdb *fdb,
 677                                   switchdev_obj_dump_cb_t *cb)
 678 {
 679         char *sfd_pl;
 680         char mac[ETH_ALEN];
 681         u16 vid;
 682         u8 local_port;
 683         u8 num_rec;
 684         int stored_err = 0;
 685         int i;
 686         int err;
 687
 688         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 689         if (!sfd_pl)
 690                 return -ENOMEM;
 691
 692         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 693         do {
 694                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
 695                 err = mlxsw_reg_query(mlxsw_sp_port->mlxsw_sp->core,
 696                                       MLXSW_REG(sfd), sfd_pl);
 697                 if (err)
 698                         goto out;
 699
 700                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
 701
 702                 /* Even in case of error, we have to run the dump to the end
 703                  * so the session in firmware is finished.
 704                  */
 705                 if (stored_err)
 706                         continue;
 707
 708                 for (i = 0; i < num_rec; i++) {
 709                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
 710                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
 711                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &vid,
 712                                                         &local_port);
 713                                 if (local_port == mlxsw_sp_port->local_port) {
 714                                         ether_addr_copy(fdb->addr, mac);
 715                                         fdb->ndm_state = NUD_REACHABLE;
 716                                         fdb->vid = vid;
 717                                         err = cb(&fdb->obj);
 718                                         if (err)
 719                                                 stored_err = err;
 720                                 }
 721                         }
 722                 }
 723         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
 724
 725 out:
 726         kfree(sfd_pl);
 727         return stored_err ? stored_err : err;
 728 }
 729
 730 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 731                                    struct switchdev_obj_port_vlan *vlan,
 732                                    switchdev_obj_dump_cb_t *cb)
 733 {
 734         u16 vid;
 735         int err = 0;
 736
 737         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 738                 vlan->flags = 0;
 739                 if (vid == mlxsw_sp_port->pvid)
 740                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
 741                 vlan->vid_begin = vid;
 742                 vlan->vid_end = vid;
 743                 err = cb(&vlan->obj);
 744                 if (err)
 745                         break;
 746         }
 747         return err;
 748 }
 749
 750 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
 751                                   struct switchdev_obj *obj,
 752                                   switchdev_obj_dump_cb_t *cb)
 753 {
 754         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 755         int err = 0;
 756
 757         switch (obj->id) {
 758         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 759                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
 760                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
 761                 break;
 762         case SWITCHDEV_OBJ_ID_PORT_FDB:
 763                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
 764                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb);
 765                 break;
 766         default:
 767                 err = -EOPNOTSUPP;
 768                 break;
 769         }
 770
 771         return err;
 772 }
 773
 774 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
 775         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
 776         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
 777         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
 778         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
 779         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
 780 };
 781
 782 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
 783                                             char *sfn_pl, int rec_index,
 784                                             bool adding)
 785 {
 786         struct mlxsw_sp_port *mlxsw_sp_port;
 787         char mac[ETH_ALEN];
 788         u8 local_port;
 789         u16 vid;
 790         int err;
 791
 792         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &vid, &local_port);
 793         mlxsw_sp_port = mlxsw_sp->ports[local_port];
 794         if (!mlxsw_sp_port) {
 795                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
 796                 return;
 797         }
 798
 799         err = mlxsw_sp_port_fdb_op(mlxsw_sp_port, mac, vid,
 800                                    adding && mlxsw_sp_port->learning, true);
 801         if (err) {
 802                 if (net_ratelimit())
 803                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
 804                 return;
 805         }
 806
 807         if (mlxsw_sp_port->learning && mlxsw_sp_port->learning_sync) {
 808                 struct switchdev_notifier_fdb_info info;
 809                 unsigned long notifier_type;
 810
 811                 info.addr = mac;
 812                 info.vid = vid;
 813                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
 814                 call_switchdev_notifiers(notifier_type, mlxsw_sp_port->dev,
 815                                          &info.info);
 816         }
 817 }
 818
 819 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
 820                                             char *sfn_pl, int rec_index)
 821 {
 822         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
 823         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
 824                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
 825                                                 rec_index, true);
 826                 break;
 827         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
 828                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
 829                                                 rec_index, false);
 830                 break;
 831         }
 832 }
 833
 834 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
 835 {
 836         schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
 837                               msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
 838 }
 839
 840 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
 841 {
 842         struct mlxsw_sp *mlxsw_sp;
 843         char *sfn_pl;
 844         u8 num_rec;
 845         int i;
 846         int err;
 847
 848         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
 849         if (!sfn_pl)
 850                 return;
 851
 852         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
 853
 854         do {
 855                 mlxsw_reg_sfn_pack(sfn_pl);
 856                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
 857                 if (err) {
 858                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
 859                         break;
 860                 }
 861                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
 862                 for (i = 0; i < num_rec; i++)
 863                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
 864
 865         } while (num_rec);
 866
 867         kfree(sfn_pl);
 868         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
 869 }
 870
 871 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
 872 {
 873         int err;
 874
 875         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
 876         if (err) {
 877                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
 878                 return err;
 879         }
 880         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
 881         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
 882         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
 883         return 0;
 884 }
 885
 886 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
 887 {
 888         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
 889 }
 890
 891 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
 892 {
 893         u16 fid;
 894
 895         for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
 896                 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
 897 }
 898
 899 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
 900 {
 901         return mlxsw_sp_fdb_init(mlxsw_sp);
 902 }
 903
 904 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
 905 {
 906         mlxsw_sp_fdb_fini(mlxsw_sp);
 907         mlxsw_sp_fids_fini(mlxsw_sp);
 908 }
 909
 910 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
 911 {
 912         struct net_device *dev = mlxsw_sp_port->dev;
 913         int err;
 914
 915         /* Allow only untagged packets to ingress and tag them internally
 916          * with VID 1.
 917          */
 918         mlxsw_sp_port->pvid = 1;
 919         err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
 920         if (err) {
 921                 netdev_err(dev, "Unable to init VLANs\n");
 922                 return err;
 923         }
 924
 925         /* Add implicit VLAN interface in the device, so that untagged
 926          * packets will be classified to the default vFID.
 927          */
 928         err = mlxsw_sp_port_add_vid(dev, 0, 1);
 929         if (err)
 930                 netdev_err(dev, "Failed to configure default vFID\n");
 931
 932         return err;
 933 }
 934
 935 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
 936 {
 937         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
 938 }
 939
 940 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
 941 {
 942 }