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 enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
 494 {
 495         return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
 496                          MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
 497 }
 498
 499 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
 500 {
 501         return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
 502                         MLXSW_REG_SFD_OP_WRITE_REMOVE;
 503 }
 504
 505 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp_port *mlxsw_sp_port,
 506                                    const char *mac, u16 vid, bool adding,
 507                                    bool dynamic)
 508 {
 509         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 510         char *sfd_pl;
 511         int err;
 512
 513         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 514         if (!sfd_pl)
 515                 return -ENOMEM;
 516
 517         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 518         mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 519                               mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
 520                               mlxsw_sp_port->local_port);
 521         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 522         kfree(sfd_pl);
 523
 524         return err;
 525 }
 526
 527 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
 528                                        const char *mac, u16 vid, bool adding,
 529                                        bool dynamic)
 530 {
 531         char *sfd_pl;
 532         int err;
 533
 534         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 535         if (!sfd_pl)
 536                 return -ENOMEM;
 537
 538         mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
 539         mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
 540                                   mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
 541                                   lag_id);
 542         err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 543         kfree(sfd_pl);
 544
 545         return err;
 546 }
 547
 548 static int
 549 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
 550                              const struct switchdev_obj_port_fdb *fdb,
 551                              struct switchdev_trans *trans)
 552 {
 553         u16 vid = fdb->vid;
 554
 555         if (switchdev_trans_ph_prepare(trans))
 556                 return 0;
 557
 558         if (!vid)
 559                 vid = mlxsw_sp_port->pvid;
 560
 561         if (!mlxsw_sp_port->lagged)
 562                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port,
 563                                                fdb->addr, vid, true, false);
 564         else
 565                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 566                                                    mlxsw_sp_port->lag_id,
 567                                                    fdb->addr, vid, true, false);
 568 }
 569
 570 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 571                                  const struct switchdev_obj *obj,
 572                                  struct switchdev_trans *trans)
 573 {
 574         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 575         int err = 0;
 576
 577         switch (obj->id) {
 578         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 579                 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
 580                                               SWITCHDEV_OBJ_PORT_VLAN(obj),
 581                                               trans);
 582                 break;
 583         case SWITCHDEV_OBJ_ID_PORT_FDB:
 584                 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
 585                                                    SWITCHDEV_OBJ_PORT_FDB(obj),
 586                                                    trans);
 587                 break;
 588         default:
 589                 err = -EOPNOTSUPP;
 590                 break;
 591         }
 592
 593         return err;
 594 }
 595
 596 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
 597                                    u16 vid_end)
 598 {
 599         u16 vid;
 600         int err;
 601
 602         for (vid = vid_begin; vid <= vid_end; vid++) {
 603                 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
 604                 if (err)
 605                         return err;
 606         }
 607
 608         return 0;
 609 }
 610
 611 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 612                                      u16 vid_begin, u16 vid_end, bool init)
 613 {
 614         struct net_device *dev = mlxsw_sp_port->dev;
 615         u16 vid, pvid;
 616         int err;
 617
 618         /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
 619          * not bridged, then prevent packets ingressing through the
 620          * port with the specified VIDs from being trapped to CPU.
 621          */
 622         if (!init && !mlxsw_sp_port->bridged)
 623                 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
 624
 625         err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
 626                                         false, false);
 627         if (err) {
 628                 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
 629                            vid_end);
 630                 return err;
 631         }
 632
 633         pvid = mlxsw_sp_port->pvid;
 634         if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
 635                 /* Default VLAN is always 1 */
 636                 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
 637                 if (err) {
 638                         netdev_err(dev, "Unable to del PVID %d\n", pvid);
 639                         return err;
 640                 }
 641                 mlxsw_sp_port->pvid = 1;
 642         }
 643
 644         if (init)
 645                 goto out;
 646
 647         err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
 648                                         false, false);
 649         if (err) {
 650                 netdev_err(dev, "Failed to clear flooding\n");
 651                 return err;
 652         }
 653
 654         for (vid = vid_begin; vid <= vid_end; vid++) {
 655                 /* Remove FID mapping in case of Virtual mode */
 656                 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
 657                 if (err) {
 658                         netdev_err(dev, "Failed to unmap FID=%d", vid);
 659                         return err;
 660                 }
 661         }
 662
 663 out:
 664         /* Changing activity bits only if HW operation succeded */
 665         for (vid = vid_begin; vid <= vid_end; vid++)
 666                 clear_bit(vid, mlxsw_sp_port->active_vlans);
 667
 668         return 0;
 669 }
 670
 671 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 672                                    const struct switchdev_obj_port_vlan *vlan)
 673 {
 674         return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 675                                          vlan->vid_begin, vlan->vid_end, false);
 676 }
 677
 678 static int
 679 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
 680                              const struct switchdev_obj_port_fdb *fdb)
 681 {
 682         if (!mlxsw_sp_port->lagged)
 683                 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port,
 684                                                fdb->addr, fdb->vid,
 685                                                false, false);
 686         else
 687                 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
 688                                                    mlxsw_sp_port->lag_id,
 689                                                    fdb->addr, fdb->vid,
 690                                                    false, false);
 691 }
 692
 693 static int mlxsw_sp_port_obj_del(struct net_device *dev,
 694                                  const struct switchdev_obj *obj)
 695 {
 696         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 697         int err = 0;
 698
 699         switch (obj->id) {
 700         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 701                 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
 702                                               SWITCHDEV_OBJ_PORT_VLAN(obj));
 703                 break;
 704         case SWITCHDEV_OBJ_ID_PORT_FDB:
 705                 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
 706                                                    SWITCHDEV_OBJ_PORT_FDB(obj));
 707                 break;
 708         default:
 709                 err = -EOPNOTSUPP;
 710                 break;
 711         }
 712
 713         return err;
 714 }
 715
 716 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
 717                                                    u16 lag_id)
 718 {
 719         struct mlxsw_sp_port *mlxsw_sp_port;
 720         int i;
 721
 722         for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
 723                 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
 724                 if (mlxsw_sp_port)
 725                         return mlxsw_sp_port;
 726         }
 727         return NULL;
 728 }
 729
 730 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 731                                   struct switchdev_obj_port_fdb *fdb,
 732                                   switchdev_obj_dump_cb_t *cb)
 733 {
 734         struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 735         char *sfd_pl;
 736         char mac[ETH_ALEN];
 737         u16 vid;
 738         u8 local_port;
 739         u16 lag_id;
 740         u8 num_rec;
 741         int stored_err = 0;
 742         int i;
 743         int err;
 744
 745         sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
 746         if (!sfd_pl)
 747                 return -ENOMEM;
 748
 749         mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
 750         do {
 751                 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
 752                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
 753                 if (err)
 754                         goto out;
 755
 756                 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
 757
 758                 /* Even in case of error, we have to run the dump to the end
 759                  * so the session in firmware is finished.
 760                  */
 761                 if (stored_err)
 762                         continue;
 763
 764                 for (i = 0; i < num_rec; i++) {
 765                         switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
 766                         case MLXSW_REG_SFD_REC_TYPE_UNICAST:
 767                                 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &vid,
 768                                                         &local_port);
 769                                 if (local_port == mlxsw_sp_port->local_port) {
 770                                         ether_addr_copy(fdb->addr, mac);
 771                                         fdb->ndm_state = NUD_REACHABLE;
 772                                         fdb->vid = vid;
 773                                         err = cb(&fdb->obj);
 774                                         if (err)
 775                                                 stored_err = err;
 776                                 }
 777                                 break;
 778                         case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
 779                                 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
 780                                                             mac, &vid, &lag_id);
 781                                 if (mlxsw_sp_port ==
 782                                     mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id)) {
 783                                         ether_addr_copy(fdb->addr, mac);
 784                                         fdb->ndm_state = NUD_REACHABLE;
 785                                         fdb->vid = vid;
 786                                         err = cb(&fdb->obj);
 787                                         if (err)
 788                                                 stored_err = err;
 789                                 }
 790                                 break;
 791                         }
 792                 }
 793         } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
 794
 795 out:
 796         kfree(sfd_pl);
 797         return stored_err ? stored_err : err;
 798 }
 799
 800 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
 801                                    struct switchdev_obj_port_vlan *vlan,
 802                                    switchdev_obj_dump_cb_t *cb)
 803 {
 804         u16 vid;
 805         int err = 0;
 806
 807         for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
 808                 vlan->flags = 0;
 809                 if (vid == mlxsw_sp_port->pvid)
 810                         vlan->flags |= BRIDGE_VLAN_INFO_PVID;
 811                 vlan->vid_begin = vid;
 812                 vlan->vid_end = vid;
 813                 err = cb(&vlan->obj);
 814                 if (err)
 815                         break;
 816         }
 817         return err;
 818 }
 819
 820 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
 821                                   struct switchdev_obj *obj,
 822                                   switchdev_obj_dump_cb_t *cb)
 823 {
 824         struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 825         int err = 0;
 826
 827         switch (obj->id) {
 828         case SWITCHDEV_OBJ_ID_PORT_VLAN:
 829                 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
 830                                               SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
 831                 break;
 832         case SWITCHDEV_OBJ_ID_PORT_FDB:
 833                 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
 834                                              SWITCHDEV_OBJ_PORT_FDB(obj), cb);
 835                 break;
 836         default:
 837                 err = -EOPNOTSUPP;
 838                 break;
 839         }
 840
 841         return err;
 842 }
 843
 844 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
 845         .switchdev_port_attr_get        = mlxsw_sp_port_attr_get,
 846         .switchdev_port_attr_set        = mlxsw_sp_port_attr_set,
 847         .switchdev_port_obj_add         = mlxsw_sp_port_obj_add,
 848         .switchdev_port_obj_del         = mlxsw_sp_port_obj_del,
 849         .switchdev_port_obj_dump        = mlxsw_sp_port_obj_dump,
 850 };
 851
 852 static void mlxsw_sp_fdb_call_notifiers(bool learning, bool learning_sync,
 853                                         bool adding, char *mac, u16 vid,
 854                                         struct net_device *dev)
 855 {
 856         struct switchdev_notifier_fdb_info info;
 857         unsigned long notifier_type;
 858
 859         if (learning && learning_sync) {
 860                 info.addr = mac;
 861                 info.vid = vid;
 862                 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
 863                 call_switchdev_notifiers(notifier_type, dev, &info.info);
 864         }
 865 }
 866
 867 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
 868                                             char *sfn_pl, int rec_index,
 869                                             bool adding)
 870 {
 871         struct mlxsw_sp_port *mlxsw_sp_port;
 872         char mac[ETH_ALEN];
 873         u8 local_port;
 874         u16 vid;
 875         int err;
 876
 877         mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &vid, &local_port);
 878         mlxsw_sp_port = mlxsw_sp->ports[local_port];
 879         if (!mlxsw_sp_port) {
 880                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
 881                 return;
 882         }
 883
 884         err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port, mac, vid,
 885                                       adding && mlxsw_sp_port->learning, true);
 886         if (err) {
 887                 if (net_ratelimit())
 888                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
 889                 return;
 890         }
 891
 892         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning,
 893                                     mlxsw_sp_port->learning_sync,
 894                                     adding, mac, vid, mlxsw_sp_port->dev);
 895 }
 896
 897 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
 898                                                 char *sfn_pl, int rec_index,
 899                                                 bool adding)
 900 {
 901         struct mlxsw_sp_port *mlxsw_sp_port;
 902         char mac[ETH_ALEN];
 903         u16 lag_id;
 904         u16 vid;
 905         int err;
 906
 907         mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &vid, &lag_id);
 908         mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
 909         if (!mlxsw_sp_port) {
 910                 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
 911                 return;
 912         }
 913
 914         err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, vid,
 915                                           adding && mlxsw_sp_port->learning,
 916                                           true);
 917         if (err) {
 918                 if (net_ratelimit())
 919                         netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
 920                 return;
 921         }
 922
 923         mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning,
 924                                     mlxsw_sp_port->learning_sync,
 925                                     adding, mac, vid,
 926                                     mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev);
 927 }
 928
 929 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
 930                                             char *sfn_pl, int rec_index)
 931 {
 932         switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
 933         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
 934                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
 935                                                 rec_index, true);
 936                 break;
 937         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
 938                 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
 939                                                 rec_index, false);
 940                 break;
 941         case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
 942                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
 943                                                     rec_index, true);
 944                 break;
 945         case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
 946                 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
 947                                                     rec_index, false);
 948                 break;
 949         }
 950 }
 951
 952 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
 953 {
 954         schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
 955                               msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
 956 }
 957
 958 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
 959 {
 960         struct mlxsw_sp *mlxsw_sp;
 961         char *sfn_pl;
 962         u8 num_rec;
 963         int i;
 964         int err;
 965
 966         sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
 967         if (!sfn_pl)
 968                 return;
 969
 970         mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
 971
 972         do {
 973                 mlxsw_reg_sfn_pack(sfn_pl);
 974                 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
 975                 if (err) {
 976                         dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
 977                         break;
 978                 }
 979                 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
 980                 for (i = 0; i < num_rec; i++)
 981                         mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
 982
 983         } while (num_rec);
 984
 985         kfree(sfn_pl);
 986         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
 987 }
 988
 989 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
 990 {
 991         int err;
 992
 993         err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
 994         if (err) {
 995                 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
 996                 return err;
 997         }
 998         INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
 999         mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1000         mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1001         return 0;
1002 }
1003
1004 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1005 {
1006         cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1007 }
1008
1009 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
1010 {
1011         u16 fid;
1012
1013         for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
1014                 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
1015 }
1016
1017 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1018 {
1019         return mlxsw_sp_fdb_init(mlxsw_sp);
1020 }
1021
1022 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1023 {
1024         mlxsw_sp_fdb_fini(mlxsw_sp);
1025         mlxsw_sp_fids_fini(mlxsw_sp);
1026 }
1027
1028 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
1029 {
1030         struct net_device *dev = mlxsw_sp_port->dev;
1031         int err;
1032
1033         /* Allow only untagged packets to ingress and tag them internally
1034          * with VID 1.
1035          */
1036         mlxsw_sp_port->pvid = 1;
1037         err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
1038         if (err) {
1039                 netdev_err(dev, "Unable to init VLANs\n");
1040                 return err;
1041         }
1042
1043         /* Add implicit VLAN interface in the device, so that untagged
1044          * packets will be classified to the default vFID.
1045          */
1046         err = mlxsw_sp_port_add_vid(dev, 0, 1);
1047         if (err)
1048                 netdev_err(dev, "Failed to configure default vFID\n");
1049
1050         return err;
1051 }
1052
1053 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1054 {
1055         mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1056 }
1057
1058 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1059 {
1060 }