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