1 /* 2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c 3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved. 4 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com> 5 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com> 6 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the names of the copyright holders nor the names of its 17 * contributors may be used to endorse or promote products derived from 18 * this software without specific prior written permission. 19 * 20 * Alternatively, this software may be distributed under the terms of the 21 * GNU General Public License ("GPL") version 2 as published by the Free 22 * Software Foundation. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include <linux/kernel.h> 38 #include <linux/types.h> 39 #include <linux/netdevice.h> 40 #include <linux/etherdevice.h> 41 #include <linux/slab.h> 42 #include <linux/device.h> 43 #include <linux/skbuff.h> 44 #include <linux/if_vlan.h> 45 #include <linux/if_bridge.h> 46 #include <linux/workqueue.h> 47 #include <linux/jiffies.h> 48 #include <linux/rtnetlink.h> 49 #include <net/switchdev.h> 50 51 #include "spectrum.h" 52 #include "core.h" 53 #include "reg.h" 54 55 static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port, 56 u16 vid) 57 { 58 u16 fid = vid; 59 60 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 61 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port); 62 63 fid = mlxsw_sp_vfid_to_fid(vfid); 64 } 65 66 if (!fid) 67 fid = mlxsw_sp_port->pvid; 68 69 return fid; 70 } 71 72 static struct mlxsw_sp_port * 73 mlxsw_sp_port_orig_get(struct net_device *dev, 74 struct mlxsw_sp_port *mlxsw_sp_port) 75 { 76 struct mlxsw_sp_port *mlxsw_sp_vport; 77 u16 vid; 78 79 if (!is_vlan_dev(dev)) 80 return mlxsw_sp_port; 81 82 vid = vlan_dev_vlan_id(dev); 83 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid); 84 WARN_ON(!mlxsw_sp_vport); 85 86 return mlxsw_sp_vport; 87 } 88 89 static int mlxsw_sp_port_attr_get(struct net_device *dev, 90 struct switchdev_attr *attr) 91 { 92 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 93 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 94 95 mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port); 96 if (!mlxsw_sp_port) 97 return -EINVAL; 98 99 switch (attr->id) { 100 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: 101 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac); 102 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac, 103 attr->u.ppid.id_len); 104 break; 105 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 106 attr->u.brport_flags = 107 (mlxsw_sp_port->learning ? BR_LEARNING : 0) | 108 (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) | 109 (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0); 110 break; 111 default: 112 return -EOPNOTSUPP; 113 } 114 115 return 0; 116 } 117 118 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, 119 u8 state) 120 { 121 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 122 enum mlxsw_reg_spms_state spms_state; 123 char *spms_pl; 124 u16 vid; 125 int err; 126 127 switch (state) { 128 case BR_STATE_FORWARDING: 129 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING; 130 break; 131 case BR_STATE_LEARNING: 132 spms_state = MLXSW_REG_SPMS_STATE_LEARNING; 133 break; 134 case BR_STATE_LISTENING: /* fall-through */ 135 case BR_STATE_DISABLED: /* fall-through */ 136 case BR_STATE_BLOCKING: 137 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING; 138 break; 139 default: 140 BUG(); 141 } 142 143 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL); 144 if (!spms_pl) 145 return -ENOMEM; 146 mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port); 147 148 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 149 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port); 150 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state); 151 } else { 152 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) 153 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state); 154 } 155 156 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl); 157 kfree(spms_pl); 158 return err; 159 } 160 161 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, 162 struct switchdev_trans *trans, 163 u8 state) 164 { 165 if (switchdev_trans_ph_prepare(trans)) 166 return 0; 167 168 mlxsw_sp_port->stp_state = state; 169 return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state); 170 } 171 172 static bool mlxsw_sp_vfid_is_vport_br(u16 vfid) 173 { 174 return vfid >= MLXSW_SP_VFID_PORT_MAX; 175 } 176 177 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port, 178 u16 idx_begin, u16 idx_end, bool set, 179 bool only_uc) 180 { 181 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 182 u16 local_port = mlxsw_sp_port->local_port; 183 enum mlxsw_flood_table_type table_type; 184 u16 range = idx_end - idx_begin + 1; 185 char *sftr_pl; 186 int err; 187 188 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 189 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID; 190 if (mlxsw_sp_vfid_is_vport_br(idx_begin)) 191 local_port = mlxsw_sp_port->local_port; 192 else 193 local_port = MLXSW_PORT_CPU_PORT; 194 } else { 195 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; 196 } 197 198 sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); 199 if (!sftr_pl) 200 return -ENOMEM; 201 202 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin, 203 table_type, range, local_port, set); 204 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); 205 if (err) 206 goto buffer_out; 207 208 /* Flooding control allows one to decide whether a given port will 209 * flood unicast traffic for which there is no FDB entry. 210 */ 211 if (only_uc) 212 goto buffer_out; 213 214 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin, 215 table_type, range, local_port, set); 216 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); 217 218 buffer_out: 219 kfree(sftr_pl); 220 return err; 221 } 222 223 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port, 224 bool set) 225 { 226 struct net_device *dev = mlxsw_sp_port->dev; 227 u16 vid, last_visited_vid; 228 int err; 229 230 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 231 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port); 232 233 return __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid, 234 set, true); 235 } 236 237 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) { 238 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set, 239 true); 240 if (err) { 241 last_visited_vid = vid; 242 goto err_port_flood_set; 243 } 244 } 245 246 return 0; 247 248 err_port_flood_set: 249 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid) 250 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true); 251 netdev_err(dev, "Failed to configure unicast flooding\n"); 252 return err; 253 } 254 255 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid, 256 bool set, bool only_uc) 257 { 258 /* In case of vFIDs, index into the flooding table is relative to 259 * the start of the vFIDs range. 260 */ 261 return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set, 262 only_uc); 263 } 264 265 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port, 266 struct switchdev_trans *trans, 267 unsigned long brport_flags) 268 { 269 unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0; 270 bool set; 271 int err; 272 273 if (!mlxsw_sp_port->bridged) 274 return -EINVAL; 275 276 if (switchdev_trans_ph_prepare(trans)) 277 return 0; 278 279 if ((uc_flood ^ brport_flags) & BR_FLOOD) { 280 set = mlxsw_sp_port->uc_flood ? false : true; 281 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set); 282 if (err) 283 return err; 284 } 285 286 mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0; 287 mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0; 288 mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0; 289 290 return 0; 291 } 292 293 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time) 294 { 295 char sfdat_pl[MLXSW_REG_SFDAT_LEN]; 296 int err; 297 298 mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time); 299 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl); 300 if (err) 301 return err; 302 mlxsw_sp->ageing_time = ageing_time; 303 return 0; 304 } 305 306 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port, 307 struct switchdev_trans *trans, 308 unsigned long ageing_clock_t) 309 { 310 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 311 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); 312 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000; 313 314 if (switchdev_trans_ph_prepare(trans)) { 315 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME || 316 ageing_time > MLXSW_SP_MAX_AGEING_TIME) 317 return -ERANGE; 318 else 319 return 0; 320 } 321 322 return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time); 323 } 324 325 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, 326 struct switchdev_trans *trans, 327 struct net_device *orig_dev, 328 bool vlan_enabled) 329 { 330 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 331 332 /* SWITCHDEV_TRANS_PREPARE phase */ 333 if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) { 334 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n"); 335 return -EINVAL; 336 } 337 338 return 0; 339 } 340 341 static int mlxsw_sp_port_attr_set(struct net_device *dev, 342 const struct switchdev_attr *attr, 343 struct switchdev_trans *trans) 344 { 345 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 346 int err = 0; 347 348 mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port); 349 if (!mlxsw_sp_port) 350 return -EINVAL; 351 352 switch (attr->id) { 353 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 354 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans, 355 attr->u.stp_state); 356 break; 357 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 358 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans, 359 attr->u.brport_flags); 360 break; 361 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: 362 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans, 363 attr->u.ageing_time); 364 break; 365 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 366 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans, 367 attr->orig_dev, 368 attr->u.vlan_filtering); 369 break; 370 default: 371 err = -EOPNOTSUPP; 372 break; 373 } 374 375 return err; 376 } 377 378 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, 379 u16 vid) 380 { 381 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 382 char spvid_pl[MLXSW_REG_SPVID_LEN]; 383 384 mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid); 385 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl); 386 } 387 388 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port, 389 bool allow) 390 { 391 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 392 char spaft_pl[MLXSW_REG_SPAFT_LEN]; 393 394 mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow); 395 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl); 396 } 397 398 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid) 399 { 400 struct net_device *dev = mlxsw_sp_port->dev; 401 int err; 402 403 if (!vid) { 404 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false); 405 if (err) { 406 netdev_err(dev, "Failed to disallow untagged traffic\n"); 407 return err; 408 } 409 } else { 410 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid); 411 if (err) { 412 netdev_err(dev, "Failed to set PVID\n"); 413 return err; 414 } 415 416 /* Only allow if not already allowed. */ 417 if (!mlxsw_sp_port->pvid) { 418 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, 419 true); 420 if (err) { 421 netdev_err(dev, "Failed to allow untagged traffic\n"); 422 goto err_port_allow_untagged_set; 423 } 424 } 425 } 426 427 mlxsw_sp_port->pvid = vid; 428 return 0; 429 430 err_port_allow_untagged_set: 431 __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid); 432 return err; 433 } 434 435 static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid) 436 { 437 char sfmr_pl[MLXSW_REG_SFMR_LEN]; 438 int err; 439 440 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid); 441 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl); 442 443 if (err) 444 return err; 445 446 set_bit(fid, mlxsw_sp->active_fids); 447 return 0; 448 } 449 450 static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid) 451 { 452 char sfmr_pl[MLXSW_REG_SFMR_LEN]; 453 454 clear_bit(fid, mlxsw_sp->active_fids); 455 456 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, 457 fid, fid); 458 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl); 459 } 460 461 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid) 462 { 463 enum mlxsw_reg_svfa_mt mt; 464 465 if (!list_empty(&mlxsw_sp_port->vports_list)) 466 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID; 467 else 468 mt = MLXSW_REG_SVFA_MT_VID_TO_FID; 469 470 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid); 471 } 472 473 static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid) 474 { 475 enum mlxsw_reg_svfa_mt mt; 476 477 if (list_empty(&mlxsw_sp_port->vports_list)) 478 return 0; 479 480 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID; 481 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid); 482 } 483 484 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin, 485 u16 vid_end) 486 { 487 u16 vid; 488 int err; 489 490 for (vid = vid_begin; vid <= vid_end; vid++) { 491 err = mlxsw_sp_port_add_vid(dev, 0, vid); 492 if (err) 493 goto err_port_add_vid; 494 } 495 return 0; 496 497 err_port_add_vid: 498 for (vid--; vid >= vid_begin; vid--) 499 mlxsw_sp_port_kill_vid(dev, 0, vid); 500 return err; 501 } 502 503 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port, 504 u16 vid_begin, u16 vid_end, bool is_member, 505 bool untagged) 506 { 507 u16 vid, vid_e; 508 int err; 509 510 for (vid = vid_begin; vid <= vid_end; 511 vid += MLXSW_REG_SPVM_REC_MAX_COUNT) { 512 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1), 513 vid_end); 514 515 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e, 516 is_member, untagged); 517 if (err) 518 return err; 519 } 520 521 return 0; 522 } 523 524 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port, 525 u16 vid_begin, u16 vid_end, 526 bool flag_untagged, bool flag_pvid) 527 { 528 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 529 struct net_device *dev = mlxsw_sp_port->dev; 530 u16 vid, last_visited_vid, old_pvid; 531 enum mlxsw_reg_svfa_mt mt; 532 int err; 533 534 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is 535 * not bridged, then packets ingressing through the port with 536 * the specified VIDs will be directed to CPU. 537 */ 538 if (!mlxsw_sp_port->bridged) 539 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end); 540 541 for (vid = vid_begin; vid <= vid_end; vid++) { 542 if (!test_bit(vid, mlxsw_sp->active_fids)) { 543 err = mlxsw_sp_fid_create(mlxsw_sp, vid); 544 if (err) { 545 netdev_err(dev, "Failed to create FID=%d\n", 546 vid); 547 return err; 548 } 549 550 /* When creating a FID, we set a VID to FID mapping 551 * regardless of the port's mode. 552 */ 553 mt = MLXSW_REG_SVFA_MT_VID_TO_FID; 554 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, 555 true, vid, vid); 556 if (err) { 557 netdev_err(dev, "Failed to create FID=VID=%d mapping\n", 558 vid); 559 goto err_port_vid_to_fid_set; 560 } 561 } 562 } 563 564 /* Set FID mapping according to port's mode */ 565 for (vid = vid_begin; vid <= vid_end; vid++) { 566 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid); 567 if (err) { 568 netdev_err(dev, "Failed to map FID=%d", vid); 569 last_visited_vid = --vid; 570 goto err_port_fid_map; 571 } 572 } 573 574 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, 575 true, false); 576 if (err) { 577 netdev_err(dev, "Failed to configure flooding\n"); 578 goto err_port_flood_set; 579 } 580 581 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, 582 true, flag_untagged); 583 if (err) { 584 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin, 585 vid_end); 586 goto err_port_vlans_set; 587 } 588 589 old_pvid = mlxsw_sp_port->pvid; 590 if (flag_pvid && old_pvid != vid_begin) { 591 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin); 592 if (err) { 593 netdev_err(dev, "Unable to add PVID %d\n", vid_begin); 594 goto err_port_pvid_set; 595 } 596 } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) { 597 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0); 598 if (err) { 599 netdev_err(dev, "Unable to del PVID\n"); 600 goto err_port_pvid_set; 601 } 602 } 603 604 /* Changing activity bits only if HW operation succeded */ 605 for (vid = vid_begin; vid <= vid_end; vid++) { 606 set_bit(vid, mlxsw_sp_port->active_vlans); 607 if (flag_untagged) 608 set_bit(vid, mlxsw_sp_port->untagged_vlans); 609 else 610 clear_bit(vid, mlxsw_sp_port->untagged_vlans); 611 } 612 613 /* STP state change must be done after we set active VLANs */ 614 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port, 615 mlxsw_sp_port->stp_state); 616 if (err) { 617 netdev_err(dev, "Failed to set STP state\n"); 618 goto err_port_stp_state_set; 619 } 620 621 return 0; 622 623 err_port_vid_to_fid_set: 624 mlxsw_sp_fid_destroy(mlxsw_sp, vid); 625 return err; 626 627 err_port_stp_state_set: 628 for (vid = vid_begin; vid <= vid_end; vid++) 629 clear_bit(vid, mlxsw_sp_port->active_vlans); 630 if (old_pvid != mlxsw_sp_port->pvid) 631 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid); 632 err_port_pvid_set: 633 __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false, 634 false); 635 err_port_vlans_set: 636 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false, 637 false); 638 err_port_flood_set: 639 last_visited_vid = vid_end; 640 err_port_fid_map: 641 for (vid = last_visited_vid; vid >= vid_begin; vid--) 642 mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid); 643 return err; 644 } 645 646 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port, 647 const struct switchdev_obj_port_vlan *vlan, 648 struct switchdev_trans *trans) 649 { 650 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 651 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 652 653 if (switchdev_trans_ph_prepare(trans)) 654 return 0; 655 656 return __mlxsw_sp_port_vlans_add(mlxsw_sp_port, 657 vlan->vid_begin, vlan->vid_end, 658 flag_untagged, flag_pvid); 659 } 660 661 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic) 662 { 663 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS : 664 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY; 665 } 666 667 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding) 668 { 669 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT : 670 MLXSW_REG_SFD_OP_WRITE_REMOVE; 671 } 672 673 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 674 const char *mac, u16 fid, bool adding, 675 bool dynamic) 676 { 677 char *sfd_pl; 678 int err; 679 680 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 681 if (!sfd_pl) 682 return -ENOMEM; 683 684 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 685 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 686 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 687 local_port); 688 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 689 kfree(sfd_pl); 690 691 return err; 692 } 693 694 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id, 695 const char *mac, u16 fid, u16 lag_vid, 696 bool adding, bool dynamic) 697 { 698 char *sfd_pl; 699 int err; 700 701 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 702 if (!sfd_pl) 703 return -ENOMEM; 704 705 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 706 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 707 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 708 lag_vid, lag_id); 709 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 710 kfree(sfd_pl); 711 712 return err; 713 } 714 715 static int 716 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port, 717 const struct switchdev_obj_port_fdb *fdb, 718 struct switchdev_trans *trans) 719 { 720 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid); 721 u16 lag_vid = 0; 722 723 if (switchdev_trans_ph_prepare(trans)) 724 return 0; 725 726 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 727 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port); 728 } 729 730 if (!mlxsw_sp_port->lagged) 731 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp, 732 mlxsw_sp_port->local_port, 733 fdb->addr, fid, true, false); 734 else 735 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp, 736 mlxsw_sp_port->lag_id, 737 fdb->addr, fid, lag_vid, 738 true, false); 739 } 740 741 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr, 742 u16 fid, u16 mid, bool adding) 743 { 744 char *sfd_pl; 745 int err; 746 747 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 748 if (!sfd_pl) 749 return -ENOMEM; 750 751 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 752 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid, 753 MLXSW_REG_SFD_REC_ACTION_NOP, mid); 754 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 755 kfree(sfd_pl); 756 return err; 757 } 758 759 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid, 760 bool add, bool clear_all_ports) 761 { 762 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 763 char *smid_pl; 764 int err, i; 765 766 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 767 if (!smid_pl) 768 return -ENOMEM; 769 770 mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add); 771 if (clear_all_ports) { 772 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) 773 if (mlxsw_sp->ports[i]) 774 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1); 775 } 776 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 777 kfree(smid_pl); 778 return err; 779 } 780 781 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp, 782 const unsigned char *addr, 783 u16 vid) 784 { 785 struct mlxsw_sp_mid *mid; 786 787 list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) { 788 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid) 789 return mid; 790 } 791 return NULL; 792 } 793 794 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp, 795 const unsigned char *addr, 796 u16 vid) 797 { 798 struct mlxsw_sp_mid *mid; 799 u16 mid_idx; 800 801 mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped, 802 MLXSW_SP_MID_MAX); 803 if (mid_idx == MLXSW_SP_MID_MAX) 804 return NULL; 805 806 mid = kzalloc(sizeof(*mid), GFP_KERNEL); 807 if (!mid) 808 return NULL; 809 810 set_bit(mid_idx, mlxsw_sp->br_mids.mapped); 811 ether_addr_copy(mid->addr, addr); 812 mid->vid = vid; 813 mid->mid = mid_idx; 814 mid->ref_count = 0; 815 list_add_tail(&mid->list, &mlxsw_sp->br_mids.list); 816 817 return mid; 818 } 819 820 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp, 821 struct mlxsw_sp_mid *mid) 822 { 823 if (--mid->ref_count == 0) { 824 list_del(&mid->list); 825 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped); 826 kfree(mid); 827 return 1; 828 } 829 return 0; 830 } 831 832 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port, 833 const struct switchdev_obj_port_mdb *mdb, 834 struct switchdev_trans *trans) 835 { 836 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 837 struct net_device *dev = mlxsw_sp_port->dev; 838 struct mlxsw_sp_mid *mid; 839 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid); 840 int err = 0; 841 842 if (switchdev_trans_ph_prepare(trans)) 843 return 0; 844 845 mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid); 846 if (!mid) { 847 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid); 848 if (!mid) { 849 netdev_err(dev, "Unable to allocate MC group\n"); 850 return -ENOMEM; 851 } 852 } 853 mid->ref_count++; 854 855 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true, 856 mid->ref_count == 1); 857 if (err) { 858 netdev_err(dev, "Unable to set SMID\n"); 859 goto err_out; 860 } 861 862 if (mid->ref_count == 1) { 863 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid, 864 true); 865 if (err) { 866 netdev_err(dev, "Unable to set MC SFD\n"); 867 goto err_out; 868 } 869 } 870 871 return 0; 872 873 err_out: 874 __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid); 875 return err; 876 } 877 878 static int mlxsw_sp_port_obj_add(struct net_device *dev, 879 const struct switchdev_obj *obj, 880 struct switchdev_trans *trans) 881 { 882 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 883 int err = 0; 884 885 mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port); 886 if (!mlxsw_sp_port) 887 return -EINVAL; 888 889 switch (obj->id) { 890 case SWITCHDEV_OBJ_ID_PORT_VLAN: 891 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) 892 return 0; 893 894 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, 895 SWITCHDEV_OBJ_PORT_VLAN(obj), 896 trans); 897 break; 898 case SWITCHDEV_OBJ_ID_PORT_FDB: 899 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port, 900 SWITCHDEV_OBJ_PORT_FDB(obj), 901 trans); 902 break; 903 case SWITCHDEV_OBJ_ID_PORT_MDB: 904 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port, 905 SWITCHDEV_OBJ_PORT_MDB(obj), 906 trans); 907 break; 908 default: 909 err = -EOPNOTSUPP; 910 break; 911 } 912 913 return err; 914 } 915 916 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin, 917 u16 vid_end) 918 { 919 u16 vid; 920 int err; 921 922 for (vid = vid_begin; vid <= vid_end; vid++) { 923 err = mlxsw_sp_port_kill_vid(dev, 0, vid); 924 if (err) 925 return err; 926 } 927 928 return 0; 929 } 930 931 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 932 u16 vid_begin, u16 vid_end, bool init) 933 { 934 struct net_device *dev = mlxsw_sp_port->dev; 935 u16 vid, pvid; 936 int err; 937 938 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is 939 * not bridged, then prevent packets ingressing through the 940 * port with the specified VIDs from being trapped to CPU. 941 */ 942 if (!init && !mlxsw_sp_port->bridged) 943 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end); 944 945 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, 946 false, false); 947 if (err) { 948 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin, 949 vid_end); 950 return err; 951 } 952 953 if (init) 954 goto out; 955 956 pvid = mlxsw_sp_port->pvid; 957 if (pvid >= vid_begin && pvid <= vid_end) { 958 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0); 959 if (err) { 960 netdev_err(dev, "Unable to del PVID %d\n", pvid); 961 return err; 962 } 963 } 964 965 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, 966 false, false); 967 if (err) { 968 netdev_err(dev, "Failed to clear flooding\n"); 969 return err; 970 } 971 972 for (vid = vid_begin; vid <= vid_end; vid++) { 973 /* Remove FID mapping in case of Virtual mode */ 974 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid); 975 if (err) { 976 netdev_err(dev, "Failed to unmap FID=%d", vid); 977 return err; 978 } 979 } 980 981 out: 982 /* Changing activity bits only if HW operation succeded */ 983 for (vid = vid_begin; vid <= vid_end; vid++) 984 clear_bit(vid, mlxsw_sp_port->active_vlans); 985 986 return 0; 987 } 988 989 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 990 const struct switchdev_obj_port_vlan *vlan) 991 { 992 return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 993 vlan->vid_begin, vlan->vid_end, false); 994 } 995 996 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port) 997 { 998 u16 vid; 999 1000 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) 1001 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false); 1002 } 1003 1004 static int 1005 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port, 1006 const struct switchdev_obj_port_fdb *fdb) 1007 { 1008 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid); 1009 u16 lag_vid = 0; 1010 1011 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 1012 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port); 1013 } 1014 1015 if (!mlxsw_sp_port->lagged) 1016 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp, 1017 mlxsw_sp_port->local_port, 1018 fdb->addr, fid, 1019 false, false); 1020 else 1021 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp, 1022 mlxsw_sp_port->lag_id, 1023 fdb->addr, fid, lag_vid, 1024 false, false); 1025 } 1026 1027 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1028 const struct switchdev_obj_port_mdb *mdb) 1029 { 1030 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1031 struct net_device *dev = mlxsw_sp_port->dev; 1032 struct mlxsw_sp_mid *mid; 1033 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid); 1034 u16 mid_idx; 1035 int err = 0; 1036 1037 mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid); 1038 if (!mid) { 1039 netdev_err(dev, "Unable to remove port from MC DB\n"); 1040 return -EINVAL; 1041 } 1042 1043 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false); 1044 if (err) 1045 netdev_err(dev, "Unable to remove port from SMID\n"); 1046 1047 mid_idx = mid->mid; 1048 if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) { 1049 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx, 1050 false); 1051 if (err) 1052 netdev_err(dev, "Unable to remove MC SFD\n"); 1053 } 1054 1055 return err; 1056 } 1057 1058 static int mlxsw_sp_port_obj_del(struct net_device *dev, 1059 const struct switchdev_obj *obj) 1060 { 1061 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1062 int err = 0; 1063 1064 mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port); 1065 if (!mlxsw_sp_port) 1066 return -EINVAL; 1067 1068 switch (obj->id) { 1069 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1070 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) 1071 return 0; 1072 1073 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port, 1074 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1075 break; 1076 case SWITCHDEV_OBJ_ID_PORT_FDB: 1077 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port, 1078 SWITCHDEV_OBJ_PORT_FDB(obj)); 1079 break; 1080 case SWITCHDEV_OBJ_ID_PORT_MDB: 1081 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port, 1082 SWITCHDEV_OBJ_PORT_MDB(obj)); 1083 break; 1084 default: 1085 err = -EOPNOTSUPP; 1086 break; 1087 } 1088 1089 return err; 1090 } 1091 1092 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, 1093 u16 lag_id) 1094 { 1095 struct mlxsw_sp_port *mlxsw_sp_port; 1096 int i; 1097 1098 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) { 1099 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i); 1100 if (mlxsw_sp_port) 1101 return mlxsw_sp_port; 1102 } 1103 return NULL; 1104 } 1105 1106 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port, 1107 struct switchdev_obj_port_fdb *fdb, 1108 switchdev_obj_dump_cb_t *cb, 1109 struct net_device *orig_dev) 1110 { 1111 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1112 struct mlxsw_sp_port *tmp; 1113 u16 vport_fid = 0; 1114 char *sfd_pl; 1115 char mac[ETH_ALEN]; 1116 u16 fid; 1117 u8 local_port; 1118 u16 lag_id; 1119 u8 num_rec; 1120 int stored_err = 0; 1121 int i; 1122 int err; 1123 1124 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1125 if (!sfd_pl) 1126 return -ENOMEM; 1127 1128 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 1129 u16 tmp; 1130 1131 tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port); 1132 vport_fid = mlxsw_sp_vfid_to_fid(tmp); 1133 } 1134 1135 mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0); 1136 do { 1137 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT); 1138 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1139 if (err) 1140 goto out; 1141 1142 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1143 1144 /* Even in case of error, we have to run the dump to the end 1145 * so the session in firmware is finished. 1146 */ 1147 if (stored_err) 1148 continue; 1149 1150 for (i = 0; i < num_rec; i++) { 1151 switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) { 1152 case MLXSW_REG_SFD_REC_TYPE_UNICAST: 1153 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid, 1154 &local_port); 1155 if (local_port == mlxsw_sp_port->local_port) { 1156 if (vport_fid && vport_fid == fid) 1157 fdb->vid = 0; 1158 else if (!vport_fid && 1159 !mlxsw_sp_fid_is_vfid(fid)) 1160 fdb->vid = fid; 1161 else 1162 continue; 1163 ether_addr_copy(fdb->addr, mac); 1164 fdb->ndm_state = NUD_REACHABLE; 1165 err = cb(&fdb->obj); 1166 if (err) 1167 stored_err = err; 1168 } 1169 break; 1170 case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG: 1171 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i, 1172 mac, &fid, &lag_id); 1173 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 1174 if (tmp && tmp->local_port == 1175 mlxsw_sp_port->local_port) { 1176 /* LAG records can only point to LAG 1177 * devices or VLAN devices on top. 1178 */ 1179 if (!netif_is_lag_master(orig_dev) && 1180 !is_vlan_dev(orig_dev)) 1181 continue; 1182 if (vport_fid && vport_fid == fid) 1183 fdb->vid = 0; 1184 else if (!vport_fid && 1185 !mlxsw_sp_fid_is_vfid(fid)) 1186 fdb->vid = fid; 1187 else 1188 continue; 1189 ether_addr_copy(fdb->addr, mac); 1190 fdb->ndm_state = NUD_REACHABLE; 1191 err = cb(&fdb->obj); 1192 if (err) 1193 stored_err = err; 1194 } 1195 break; 1196 } 1197 } 1198 } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT); 1199 1200 out: 1201 kfree(sfd_pl); 1202 return stored_err ? stored_err : err; 1203 } 1204 1205 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port, 1206 struct switchdev_obj_port_vlan *vlan, 1207 switchdev_obj_dump_cb_t *cb) 1208 { 1209 u16 vid; 1210 int err = 0; 1211 1212 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) { 1213 vlan->flags = 0; 1214 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port); 1215 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port); 1216 return cb(&vlan->obj); 1217 } 1218 1219 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) { 1220 vlan->flags = 0; 1221 if (vid == mlxsw_sp_port->pvid) 1222 vlan->flags |= BRIDGE_VLAN_INFO_PVID; 1223 if (test_bit(vid, mlxsw_sp_port->untagged_vlans)) 1224 vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED; 1225 vlan->vid_begin = vid; 1226 vlan->vid_end = vid; 1227 err = cb(&vlan->obj); 1228 if (err) 1229 break; 1230 } 1231 return err; 1232 } 1233 1234 static int mlxsw_sp_port_obj_dump(struct net_device *dev, 1235 struct switchdev_obj *obj, 1236 switchdev_obj_dump_cb_t *cb) 1237 { 1238 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1239 int err = 0; 1240 1241 mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port); 1242 if (!mlxsw_sp_port) 1243 return -EINVAL; 1244 1245 switch (obj->id) { 1246 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1247 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port, 1248 SWITCHDEV_OBJ_PORT_VLAN(obj), cb); 1249 break; 1250 case SWITCHDEV_OBJ_ID_PORT_FDB: 1251 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port, 1252 SWITCHDEV_OBJ_PORT_FDB(obj), cb, 1253 obj->orig_dev); 1254 break; 1255 default: 1256 err = -EOPNOTSUPP; 1257 break; 1258 } 1259 1260 return err; 1261 } 1262 1263 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { 1264 .switchdev_port_attr_get = mlxsw_sp_port_attr_get, 1265 .switchdev_port_attr_set = mlxsw_sp_port_attr_set, 1266 .switchdev_port_obj_add = mlxsw_sp_port_obj_add, 1267 .switchdev_port_obj_del = mlxsw_sp_port_obj_del, 1268 .switchdev_port_obj_dump = mlxsw_sp_port_obj_dump, 1269 }; 1270 1271 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding, 1272 char *mac, u16 vid, 1273 struct net_device *dev) 1274 { 1275 struct switchdev_notifier_fdb_info info; 1276 unsigned long notifier_type; 1277 1278 if (learning_sync) { 1279 info.addr = mac; 1280 info.vid = vid; 1281 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL; 1282 call_switchdev_notifiers(notifier_type, dev, &info.info); 1283 } 1284 } 1285 1286 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, 1287 char *sfn_pl, int rec_index, 1288 bool adding) 1289 { 1290 struct mlxsw_sp_port *mlxsw_sp_port; 1291 char mac[ETH_ALEN]; 1292 u8 local_port; 1293 u16 vid, fid; 1294 bool do_notification = true; 1295 int err; 1296 1297 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port); 1298 mlxsw_sp_port = mlxsw_sp->ports[local_port]; 1299 if (!mlxsw_sp_port) { 1300 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n"); 1301 goto just_remove; 1302 } 1303 1304 if (mlxsw_sp_fid_is_vfid(fid)) { 1305 u16 vfid = mlxsw_sp_fid_to_vfid(fid); 1306 struct mlxsw_sp_port *mlxsw_sp_vport; 1307 1308 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port, 1309 vfid); 1310 if (!mlxsw_sp_vport) { 1311 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n"); 1312 goto just_remove; 1313 } 1314 vid = 0; 1315 /* Override the physical port with the vPort. */ 1316 mlxsw_sp_port = mlxsw_sp_vport; 1317 } else { 1318 vid = fid; 1319 } 1320 1321 adding = adding && mlxsw_sp_port->learning; 1322 1323 do_fdb_op: 1324 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, 1325 adding, true); 1326 if (err) { 1327 if (net_ratelimit()) 1328 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n"); 1329 return; 1330 } 1331 1332 if (!do_notification) 1333 return; 1334 mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, 1335 adding, mac, vid, mlxsw_sp_port->dev); 1336 return; 1337 1338 just_remove: 1339 adding = false; 1340 do_notification = false; 1341 goto do_fdb_op; 1342 } 1343 1344 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, 1345 char *sfn_pl, int rec_index, 1346 bool adding) 1347 { 1348 struct mlxsw_sp_port *mlxsw_sp_port; 1349 struct net_device *dev; 1350 char mac[ETH_ALEN]; 1351 u16 lag_vid = 0; 1352 u16 lag_id; 1353 u16 vid, fid; 1354 bool do_notification = true; 1355 int err; 1356 1357 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id); 1358 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 1359 if (!mlxsw_sp_port) { 1360 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n"); 1361 goto just_remove; 1362 } 1363 1364 if (mlxsw_sp_fid_is_vfid(fid)) { 1365 u16 vfid = mlxsw_sp_fid_to_vfid(fid); 1366 struct mlxsw_sp_port *mlxsw_sp_vport; 1367 1368 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port, 1369 vfid); 1370 if (!mlxsw_sp_vport) { 1371 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n"); 1372 goto just_remove; 1373 } 1374 1375 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport); 1376 dev = mlxsw_sp_vport->dev; 1377 vid = 0; 1378 /* Override the physical port with the vPort. */ 1379 mlxsw_sp_port = mlxsw_sp_vport; 1380 } else { 1381 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev; 1382 vid = fid; 1383 } 1384 1385 adding = adding && mlxsw_sp_port->learning; 1386 1387 do_fdb_op: 1388 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid, 1389 adding, true); 1390 if (err) { 1391 if (net_ratelimit()) 1392 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n"); 1393 return; 1394 } 1395 1396 if (!do_notification) 1397 return; 1398 mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac, 1399 vid, dev); 1400 return; 1401 1402 just_remove: 1403 adding = false; 1404 do_notification = false; 1405 goto do_fdb_op; 1406 } 1407 1408 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, 1409 char *sfn_pl, int rec_index) 1410 { 1411 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) { 1412 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC: 1413 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 1414 rec_index, true); 1415 break; 1416 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC: 1417 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 1418 rec_index, false); 1419 break; 1420 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG: 1421 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 1422 rec_index, true); 1423 break; 1424 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG: 1425 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 1426 rec_index, false); 1427 break; 1428 } 1429 } 1430 1431 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp) 1432 { 1433 schedule_delayed_work(&mlxsw_sp->fdb_notify.dw, 1434 msecs_to_jiffies(mlxsw_sp->fdb_notify.interval)); 1435 } 1436 1437 static void mlxsw_sp_fdb_notify_work(struct work_struct *work) 1438 { 1439 struct mlxsw_sp *mlxsw_sp; 1440 char *sfn_pl; 1441 u8 num_rec; 1442 int i; 1443 int err; 1444 1445 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL); 1446 if (!sfn_pl) 1447 return; 1448 1449 mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work); 1450 1451 rtnl_lock(); 1452 do { 1453 mlxsw_reg_sfn_pack(sfn_pl); 1454 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); 1455 if (err) { 1456 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n"); 1457 break; 1458 } 1459 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl); 1460 for (i = 0; i < num_rec; i++) 1461 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); 1462 1463 } while (num_rec); 1464 rtnl_unlock(); 1465 1466 kfree(sfn_pl); 1467 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 1468 } 1469 1470 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) 1471 { 1472 int err; 1473 1474 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME); 1475 if (err) { 1476 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); 1477 return err; 1478 } 1479 INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work); 1480 mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; 1481 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 1482 return 0; 1483 } 1484 1485 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp) 1486 { 1487 cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw); 1488 } 1489 1490 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp) 1491 { 1492 u16 fid; 1493 1494 for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID) 1495 mlxsw_sp_fid_destroy(mlxsw_sp, fid); 1496 } 1497 1498 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp) 1499 { 1500 return mlxsw_sp_fdb_init(mlxsw_sp); 1501 } 1502 1503 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) 1504 { 1505 mlxsw_sp_fdb_fini(mlxsw_sp); 1506 mlxsw_sp_fids_fini(mlxsw_sp); 1507 } 1508 1509 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port) 1510 { 1511 struct net_device *dev = mlxsw_sp_port->dev; 1512 int err; 1513 1514 /* Allow only untagged packets to ingress and tag them internally 1515 * with VID 1. 1516 */ 1517 mlxsw_sp_port->pvid = 1; 1518 err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1, 1519 true); 1520 if (err) { 1521 netdev_err(dev, "Unable to init VLANs\n"); 1522 return err; 1523 } 1524 1525 /* Add implicit VLAN interface in the device, so that untagged 1526 * packets will be classified to the default vFID. 1527 */ 1528 err = mlxsw_sp_port_add_vid(dev, 0, 1); 1529 if (err) 1530 netdev_err(dev, "Failed to configure default vFID\n"); 1531 1532 return err; 1533 } 1534 1535 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) 1536 { 1537 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; 1538 } 1539 1540 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) 1541 { 1542 } 1543