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 <linux/netlink.h> 50 #include <net/switchdev.h> 51 52 #include "spectrum_span.h" 53 #include "spectrum_router.h" 54 #include "spectrum_switchdev.h" 55 #include "spectrum.h" 56 #include "core.h" 57 #include "reg.h" 58 59 struct mlxsw_sp_bridge_ops; 60 61 struct mlxsw_sp_bridge { 62 struct mlxsw_sp *mlxsw_sp; 63 struct { 64 struct delayed_work dw; 65 #define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100 66 unsigned int interval; /* ms */ 67 } fdb_notify; 68 #define MLXSW_SP_MIN_AGEING_TIME 10 69 #define MLXSW_SP_MAX_AGEING_TIME 1000000 70 #define MLXSW_SP_DEFAULT_AGEING_TIME 300 71 u32 ageing_time; 72 bool vlan_enabled_exists; 73 struct list_head bridges_list; 74 DECLARE_BITMAP(mids_bitmap, MLXSW_SP_MID_MAX); 75 const struct mlxsw_sp_bridge_ops *bridge_8021q_ops; 76 const struct mlxsw_sp_bridge_ops *bridge_8021d_ops; 77 }; 78 79 struct mlxsw_sp_bridge_device { 80 struct net_device *dev; 81 struct list_head list; 82 struct list_head ports_list; 83 struct list_head mids_list; 84 u8 vlan_enabled:1, 85 multicast_enabled:1, 86 mrouter:1; 87 const struct mlxsw_sp_bridge_ops *ops; 88 }; 89 90 struct mlxsw_sp_bridge_port { 91 struct net_device *dev; 92 struct mlxsw_sp_bridge_device *bridge_device; 93 struct list_head list; 94 struct list_head vlans_list; 95 unsigned int ref_count; 96 u8 stp_state; 97 unsigned long flags; 98 bool mrouter; 99 bool lagged; 100 union { 101 u16 lag_id; 102 u16 system_port; 103 }; 104 }; 105 106 struct mlxsw_sp_bridge_vlan { 107 struct list_head list; 108 struct list_head port_vlan_list; 109 u16 vid; 110 }; 111 112 struct mlxsw_sp_bridge_ops { 113 int (*port_join)(struct mlxsw_sp_bridge_device *bridge_device, 114 struct mlxsw_sp_bridge_port *bridge_port, 115 struct mlxsw_sp_port *mlxsw_sp_port, 116 struct netlink_ext_ack *extack); 117 void (*port_leave)(struct mlxsw_sp_bridge_device *bridge_device, 118 struct mlxsw_sp_bridge_port *bridge_port, 119 struct mlxsw_sp_port *mlxsw_sp_port); 120 struct mlxsw_sp_fid * 121 (*fid_get)(struct mlxsw_sp_bridge_device *bridge_device, 122 u16 vid); 123 }; 124 125 static int 126 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 127 struct mlxsw_sp_bridge_port *bridge_port, 128 u16 fid_index); 129 130 static void 131 mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, 132 struct mlxsw_sp_bridge_port *bridge_port); 133 134 static void 135 mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port, 136 struct mlxsw_sp_bridge_device 137 *bridge_device); 138 139 static void 140 mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port, 141 struct mlxsw_sp_bridge_port *bridge_port, 142 bool add); 143 144 static struct mlxsw_sp_bridge_device * 145 mlxsw_sp_bridge_device_find(const struct mlxsw_sp_bridge *bridge, 146 const struct net_device *br_dev) 147 { 148 struct mlxsw_sp_bridge_device *bridge_device; 149 150 list_for_each_entry(bridge_device, &bridge->bridges_list, list) 151 if (bridge_device->dev == br_dev) 152 return bridge_device; 153 154 return NULL; 155 } 156 157 bool mlxsw_sp_bridge_device_is_offloaded(const struct mlxsw_sp *mlxsw_sp, 158 const struct net_device *br_dev) 159 { 160 return !!mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); 161 } 162 163 static struct mlxsw_sp_bridge_device * 164 mlxsw_sp_bridge_device_create(struct mlxsw_sp_bridge *bridge, 165 struct net_device *br_dev) 166 { 167 struct device *dev = bridge->mlxsw_sp->bus_info->dev; 168 struct mlxsw_sp_bridge_device *bridge_device; 169 bool vlan_enabled = br_vlan_enabled(br_dev); 170 171 if (vlan_enabled && bridge->vlan_enabled_exists) { 172 dev_err(dev, "Only one VLAN-aware bridge is supported\n"); 173 return ERR_PTR(-EINVAL); 174 } 175 176 bridge_device = kzalloc(sizeof(*bridge_device), GFP_KERNEL); 177 if (!bridge_device) 178 return ERR_PTR(-ENOMEM); 179 180 bridge_device->dev = br_dev; 181 bridge_device->vlan_enabled = vlan_enabled; 182 bridge_device->multicast_enabled = br_multicast_enabled(br_dev); 183 bridge_device->mrouter = br_multicast_router(br_dev); 184 INIT_LIST_HEAD(&bridge_device->ports_list); 185 if (vlan_enabled) { 186 bridge->vlan_enabled_exists = true; 187 bridge_device->ops = bridge->bridge_8021q_ops; 188 } else { 189 bridge_device->ops = bridge->bridge_8021d_ops; 190 } 191 INIT_LIST_HEAD(&bridge_device->mids_list); 192 list_add(&bridge_device->list, &bridge->bridges_list); 193 194 return bridge_device; 195 } 196 197 static void 198 mlxsw_sp_bridge_device_destroy(struct mlxsw_sp_bridge *bridge, 199 struct mlxsw_sp_bridge_device *bridge_device) 200 { 201 list_del(&bridge_device->list); 202 if (bridge_device->vlan_enabled) 203 bridge->vlan_enabled_exists = false; 204 WARN_ON(!list_empty(&bridge_device->ports_list)); 205 WARN_ON(!list_empty(&bridge_device->mids_list)); 206 kfree(bridge_device); 207 } 208 209 static struct mlxsw_sp_bridge_device * 210 mlxsw_sp_bridge_device_get(struct mlxsw_sp_bridge *bridge, 211 struct net_device *br_dev) 212 { 213 struct mlxsw_sp_bridge_device *bridge_device; 214 215 bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev); 216 if (bridge_device) 217 return bridge_device; 218 219 return mlxsw_sp_bridge_device_create(bridge, br_dev); 220 } 221 222 static void 223 mlxsw_sp_bridge_device_put(struct mlxsw_sp_bridge *bridge, 224 struct mlxsw_sp_bridge_device *bridge_device) 225 { 226 if (list_empty(&bridge_device->ports_list)) 227 mlxsw_sp_bridge_device_destroy(bridge, bridge_device); 228 } 229 230 static struct mlxsw_sp_bridge_port * 231 __mlxsw_sp_bridge_port_find(const struct mlxsw_sp_bridge_device *bridge_device, 232 const struct net_device *brport_dev) 233 { 234 struct mlxsw_sp_bridge_port *bridge_port; 235 236 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 237 if (bridge_port->dev == brport_dev) 238 return bridge_port; 239 } 240 241 return NULL; 242 } 243 244 struct mlxsw_sp_bridge_port * 245 mlxsw_sp_bridge_port_find(struct mlxsw_sp_bridge *bridge, 246 struct net_device *brport_dev) 247 { 248 struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev); 249 struct mlxsw_sp_bridge_device *bridge_device; 250 251 if (!br_dev) 252 return NULL; 253 254 bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev); 255 if (!bridge_device) 256 return NULL; 257 258 return __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 259 } 260 261 static struct mlxsw_sp_bridge_port * 262 mlxsw_sp_bridge_port_create(struct mlxsw_sp_bridge_device *bridge_device, 263 struct net_device *brport_dev) 264 { 265 struct mlxsw_sp_bridge_port *bridge_port; 266 struct mlxsw_sp_port *mlxsw_sp_port; 267 268 bridge_port = kzalloc(sizeof(*bridge_port), GFP_KERNEL); 269 if (!bridge_port) 270 return NULL; 271 272 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(brport_dev); 273 bridge_port->lagged = mlxsw_sp_port->lagged; 274 if (bridge_port->lagged) 275 bridge_port->lag_id = mlxsw_sp_port->lag_id; 276 else 277 bridge_port->system_port = mlxsw_sp_port->local_port; 278 bridge_port->dev = brport_dev; 279 bridge_port->bridge_device = bridge_device; 280 bridge_port->stp_state = BR_STATE_DISABLED; 281 bridge_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC | 282 BR_MCAST_FLOOD; 283 INIT_LIST_HEAD(&bridge_port->vlans_list); 284 list_add(&bridge_port->list, &bridge_device->ports_list); 285 bridge_port->ref_count = 1; 286 287 return bridge_port; 288 } 289 290 static void 291 mlxsw_sp_bridge_port_destroy(struct mlxsw_sp_bridge_port *bridge_port) 292 { 293 list_del(&bridge_port->list); 294 WARN_ON(!list_empty(&bridge_port->vlans_list)); 295 kfree(bridge_port); 296 } 297 298 static bool 299 mlxsw_sp_bridge_port_should_destroy(const struct mlxsw_sp_bridge_port * 300 bridge_port) 301 { 302 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_port->dev); 303 304 /* In case ports were pulled from out of a bridged LAG, then 305 * it's possible the reference count isn't zero, yet the bridge 306 * port should be destroyed, as it's no longer an upper of ours. 307 */ 308 if (!mlxsw_sp && list_empty(&bridge_port->vlans_list)) 309 return true; 310 else if (bridge_port->ref_count == 0) 311 return true; 312 else 313 return false; 314 } 315 316 static struct mlxsw_sp_bridge_port * 317 mlxsw_sp_bridge_port_get(struct mlxsw_sp_bridge *bridge, 318 struct net_device *brport_dev) 319 { 320 struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev); 321 struct mlxsw_sp_bridge_device *bridge_device; 322 struct mlxsw_sp_bridge_port *bridge_port; 323 int err; 324 325 bridge_port = mlxsw_sp_bridge_port_find(bridge, brport_dev); 326 if (bridge_port) { 327 bridge_port->ref_count++; 328 return bridge_port; 329 } 330 331 bridge_device = mlxsw_sp_bridge_device_get(bridge, br_dev); 332 if (IS_ERR(bridge_device)) 333 return ERR_CAST(bridge_device); 334 335 bridge_port = mlxsw_sp_bridge_port_create(bridge_device, brport_dev); 336 if (!bridge_port) { 337 err = -ENOMEM; 338 goto err_bridge_port_create; 339 } 340 341 return bridge_port; 342 343 err_bridge_port_create: 344 mlxsw_sp_bridge_device_put(bridge, bridge_device); 345 return ERR_PTR(err); 346 } 347 348 static void mlxsw_sp_bridge_port_put(struct mlxsw_sp_bridge *bridge, 349 struct mlxsw_sp_bridge_port *bridge_port) 350 { 351 struct mlxsw_sp_bridge_device *bridge_device; 352 353 bridge_port->ref_count--; 354 if (!mlxsw_sp_bridge_port_should_destroy(bridge_port)) 355 return; 356 bridge_device = bridge_port->bridge_device; 357 mlxsw_sp_bridge_port_destroy(bridge_port); 358 mlxsw_sp_bridge_device_put(bridge, bridge_device); 359 } 360 361 static struct mlxsw_sp_port_vlan * 362 mlxsw_sp_port_vlan_find_by_bridge(struct mlxsw_sp_port *mlxsw_sp_port, 363 const struct mlxsw_sp_bridge_device * 364 bridge_device, 365 u16 vid) 366 { 367 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 368 369 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 370 list) { 371 if (!mlxsw_sp_port_vlan->bridge_port) 372 continue; 373 if (mlxsw_sp_port_vlan->bridge_port->bridge_device != 374 bridge_device) 375 continue; 376 if (bridge_device->vlan_enabled && 377 mlxsw_sp_port_vlan->vid != vid) 378 continue; 379 return mlxsw_sp_port_vlan; 380 } 381 382 return NULL; 383 } 384 385 static struct mlxsw_sp_port_vlan* 386 mlxsw_sp_port_vlan_find_by_fid(struct mlxsw_sp_port *mlxsw_sp_port, 387 u16 fid_index) 388 { 389 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 390 391 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 392 list) { 393 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 394 395 if (fid && mlxsw_sp_fid_index(fid) == fid_index) 396 return mlxsw_sp_port_vlan; 397 } 398 399 return NULL; 400 } 401 402 static struct mlxsw_sp_bridge_vlan * 403 mlxsw_sp_bridge_vlan_find(const struct mlxsw_sp_bridge_port *bridge_port, 404 u16 vid) 405 { 406 struct mlxsw_sp_bridge_vlan *bridge_vlan; 407 408 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 409 if (bridge_vlan->vid == vid) 410 return bridge_vlan; 411 } 412 413 return NULL; 414 } 415 416 static struct mlxsw_sp_bridge_vlan * 417 mlxsw_sp_bridge_vlan_create(struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 418 { 419 struct mlxsw_sp_bridge_vlan *bridge_vlan; 420 421 bridge_vlan = kzalloc(sizeof(*bridge_vlan), GFP_KERNEL); 422 if (!bridge_vlan) 423 return NULL; 424 425 INIT_LIST_HEAD(&bridge_vlan->port_vlan_list); 426 bridge_vlan->vid = vid; 427 list_add(&bridge_vlan->list, &bridge_port->vlans_list); 428 429 return bridge_vlan; 430 } 431 432 static void 433 mlxsw_sp_bridge_vlan_destroy(struct mlxsw_sp_bridge_vlan *bridge_vlan) 434 { 435 list_del(&bridge_vlan->list); 436 WARN_ON(!list_empty(&bridge_vlan->port_vlan_list)); 437 kfree(bridge_vlan); 438 } 439 440 static struct mlxsw_sp_bridge_vlan * 441 mlxsw_sp_bridge_vlan_get(struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 442 { 443 struct mlxsw_sp_bridge_vlan *bridge_vlan; 444 445 bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid); 446 if (bridge_vlan) 447 return bridge_vlan; 448 449 return mlxsw_sp_bridge_vlan_create(bridge_port, vid); 450 } 451 452 static void mlxsw_sp_bridge_vlan_put(struct mlxsw_sp_bridge_vlan *bridge_vlan) 453 { 454 if (list_empty(&bridge_vlan->port_vlan_list)) 455 mlxsw_sp_bridge_vlan_destroy(bridge_vlan); 456 } 457 458 static void mlxsw_sp_port_bridge_flags_get(struct mlxsw_sp_bridge *bridge, 459 struct net_device *dev, 460 unsigned long *brport_flags) 461 { 462 struct mlxsw_sp_bridge_port *bridge_port; 463 464 bridge_port = mlxsw_sp_bridge_port_find(bridge, dev); 465 if (WARN_ON(!bridge_port)) 466 return; 467 468 memcpy(brport_flags, &bridge_port->flags, sizeof(*brport_flags)); 469 } 470 471 static int mlxsw_sp_port_attr_get(struct net_device *dev, 472 struct switchdev_attr *attr) 473 { 474 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 475 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 476 477 switch (attr->id) { 478 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: 479 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac); 480 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac, 481 attr->u.ppid.id_len); 482 break; 483 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 484 mlxsw_sp_port_bridge_flags_get(mlxsw_sp->bridge, attr->orig_dev, 485 &attr->u.brport_flags); 486 break; 487 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT: 488 attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD | 489 BR_MCAST_FLOOD; 490 break; 491 default: 492 return -EOPNOTSUPP; 493 } 494 495 return 0; 496 } 497 498 static int 499 mlxsw_sp_port_bridge_vlan_stp_set(struct mlxsw_sp_port *mlxsw_sp_port, 500 struct mlxsw_sp_bridge_vlan *bridge_vlan, 501 u8 state) 502 { 503 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 504 505 list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list, 506 bridge_vlan_node) { 507 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port) 508 continue; 509 return mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, 510 bridge_vlan->vid, state); 511 } 512 513 return 0; 514 } 515 516 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, 517 struct switchdev_trans *trans, 518 struct net_device *orig_dev, 519 u8 state) 520 { 521 struct mlxsw_sp_bridge_port *bridge_port; 522 struct mlxsw_sp_bridge_vlan *bridge_vlan; 523 int err; 524 525 if (switchdev_trans_ph_prepare(trans)) 526 return 0; 527 528 /* It's possible we failed to enslave the port, yet this 529 * operation is executed due to it being deferred. 530 */ 531 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge, 532 orig_dev); 533 if (!bridge_port) 534 return 0; 535 536 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 537 err = mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port, 538 bridge_vlan, state); 539 if (err) 540 goto err_port_bridge_vlan_stp_set; 541 } 542 543 bridge_port->stp_state = state; 544 545 return 0; 546 547 err_port_bridge_vlan_stp_set: 548 list_for_each_entry_continue_reverse(bridge_vlan, 549 &bridge_port->vlans_list, list) 550 mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port, bridge_vlan, 551 bridge_port->stp_state); 552 return err; 553 } 554 555 static int 556 mlxsw_sp_port_bridge_vlan_flood_set(struct mlxsw_sp_port *mlxsw_sp_port, 557 struct mlxsw_sp_bridge_vlan *bridge_vlan, 558 enum mlxsw_sp_flood_type packet_type, 559 bool member) 560 { 561 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 562 563 list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list, 564 bridge_vlan_node) { 565 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port) 566 continue; 567 return mlxsw_sp_fid_flood_set(mlxsw_sp_port_vlan->fid, 568 packet_type, 569 mlxsw_sp_port->local_port, 570 member); 571 } 572 573 return 0; 574 } 575 576 static int 577 mlxsw_sp_bridge_port_flood_table_set(struct mlxsw_sp_port *mlxsw_sp_port, 578 struct mlxsw_sp_bridge_port *bridge_port, 579 enum mlxsw_sp_flood_type packet_type, 580 bool member) 581 { 582 struct mlxsw_sp_bridge_vlan *bridge_vlan; 583 int err; 584 585 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 586 err = mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port, 587 bridge_vlan, 588 packet_type, 589 member); 590 if (err) 591 goto err_port_bridge_vlan_flood_set; 592 } 593 594 return 0; 595 596 err_port_bridge_vlan_flood_set: 597 list_for_each_entry_continue_reverse(bridge_vlan, 598 &bridge_port->vlans_list, list) 599 mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port, bridge_vlan, 600 packet_type, !member); 601 return err; 602 } 603 604 static int 605 mlxsw_sp_port_bridge_vlan_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, 606 struct mlxsw_sp_bridge_vlan *bridge_vlan, 607 bool set) 608 { 609 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 610 u16 vid = bridge_vlan->vid; 611 612 list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list, 613 bridge_vlan_node) { 614 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port) 615 continue; 616 return mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, set); 617 } 618 619 return 0; 620 } 621 622 static int 623 mlxsw_sp_bridge_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, 624 struct mlxsw_sp_bridge_port *bridge_port, 625 bool set) 626 { 627 struct mlxsw_sp_bridge_vlan *bridge_vlan; 628 int err; 629 630 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 631 err = mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port, 632 bridge_vlan, set); 633 if (err) 634 goto err_port_bridge_vlan_learning_set; 635 } 636 637 return 0; 638 639 err_port_bridge_vlan_learning_set: 640 list_for_each_entry_continue_reverse(bridge_vlan, 641 &bridge_port->vlans_list, list) 642 mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port, 643 bridge_vlan, !set); 644 return err; 645 } 646 647 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port, 648 struct switchdev_trans *trans, 649 struct net_device *orig_dev, 650 unsigned long brport_flags) 651 { 652 struct mlxsw_sp_bridge_port *bridge_port; 653 int err; 654 655 if (switchdev_trans_ph_prepare(trans)) 656 return 0; 657 658 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge, 659 orig_dev); 660 if (!bridge_port) 661 return 0; 662 663 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port, 664 MLXSW_SP_FLOOD_TYPE_UC, 665 brport_flags & BR_FLOOD); 666 if (err) 667 return err; 668 669 err = mlxsw_sp_bridge_port_learning_set(mlxsw_sp_port, bridge_port, 670 brport_flags & BR_LEARNING); 671 if (err) 672 return err; 673 674 if (bridge_port->bridge_device->multicast_enabled) 675 goto out; 676 677 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port, 678 MLXSW_SP_FLOOD_TYPE_MC, 679 brport_flags & 680 BR_MCAST_FLOOD); 681 if (err) 682 return err; 683 684 out: 685 memcpy(&bridge_port->flags, &brport_flags, sizeof(brport_flags)); 686 return 0; 687 } 688 689 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time) 690 { 691 char sfdat_pl[MLXSW_REG_SFDAT_LEN]; 692 int err; 693 694 mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time); 695 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl); 696 if (err) 697 return err; 698 mlxsw_sp->bridge->ageing_time = ageing_time; 699 return 0; 700 } 701 702 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port, 703 struct switchdev_trans *trans, 704 unsigned long ageing_clock_t) 705 { 706 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 707 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); 708 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000; 709 710 if (switchdev_trans_ph_prepare(trans)) { 711 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME || 712 ageing_time > MLXSW_SP_MAX_AGEING_TIME) 713 return -ERANGE; 714 else 715 return 0; 716 } 717 718 return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time); 719 } 720 721 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, 722 struct switchdev_trans *trans, 723 struct net_device *orig_dev, 724 bool vlan_enabled) 725 { 726 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 727 struct mlxsw_sp_bridge_device *bridge_device; 728 729 if (!switchdev_trans_ph_prepare(trans)) 730 return 0; 731 732 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev); 733 if (WARN_ON(!bridge_device)) 734 return -EINVAL; 735 736 if (bridge_device->vlan_enabled == vlan_enabled) 737 return 0; 738 739 netdev_err(bridge_device->dev, "VLAN filtering can't be changed for existing bridge\n"); 740 return -EINVAL; 741 } 742 743 static int mlxsw_sp_port_attr_mrouter_set(struct mlxsw_sp_port *mlxsw_sp_port, 744 struct switchdev_trans *trans, 745 struct net_device *orig_dev, 746 bool is_port_mrouter) 747 { 748 struct mlxsw_sp_bridge_port *bridge_port; 749 int err; 750 751 if (switchdev_trans_ph_prepare(trans)) 752 return 0; 753 754 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge, 755 orig_dev); 756 if (!bridge_port) 757 return 0; 758 759 if (!bridge_port->bridge_device->multicast_enabled) 760 goto out; 761 762 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port, 763 MLXSW_SP_FLOOD_TYPE_MC, 764 is_port_mrouter); 765 if (err) 766 return err; 767 768 mlxsw_sp_port_mrouter_update_mdb(mlxsw_sp_port, bridge_port, 769 is_port_mrouter); 770 out: 771 bridge_port->mrouter = is_port_mrouter; 772 return 0; 773 } 774 775 static bool mlxsw_sp_mc_flood(const struct mlxsw_sp_bridge_port *bridge_port) 776 { 777 const struct mlxsw_sp_bridge_device *bridge_device; 778 779 bridge_device = bridge_port->bridge_device; 780 return bridge_device->multicast_enabled ? bridge_port->mrouter : 781 bridge_port->flags & BR_MCAST_FLOOD; 782 } 783 784 static int mlxsw_sp_port_mc_disabled_set(struct mlxsw_sp_port *mlxsw_sp_port, 785 struct switchdev_trans *trans, 786 struct net_device *orig_dev, 787 bool mc_disabled) 788 { 789 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 790 struct mlxsw_sp_bridge_device *bridge_device; 791 struct mlxsw_sp_bridge_port *bridge_port; 792 int err; 793 794 if (switchdev_trans_ph_prepare(trans)) 795 return 0; 796 797 /* It's possible we failed to enslave the port, yet this 798 * operation is executed due to it being deferred. 799 */ 800 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev); 801 if (!bridge_device) 802 return 0; 803 804 if (bridge_device->multicast_enabled != !mc_disabled) { 805 bridge_device->multicast_enabled = !mc_disabled; 806 mlxsw_sp_bridge_mdb_mc_enable_sync(mlxsw_sp_port, 807 bridge_device); 808 } 809 810 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 811 enum mlxsw_sp_flood_type packet_type = MLXSW_SP_FLOOD_TYPE_MC; 812 bool member = mlxsw_sp_mc_flood(bridge_port); 813 814 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, 815 bridge_port, 816 packet_type, member); 817 if (err) 818 return err; 819 } 820 821 bridge_device->multicast_enabled = !mc_disabled; 822 823 return 0; 824 } 825 826 static int mlxsw_sp_smid_router_port_set(struct mlxsw_sp *mlxsw_sp, 827 u16 mid_idx, bool add) 828 { 829 char *smid_pl; 830 int err; 831 832 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 833 if (!smid_pl) 834 return -ENOMEM; 835 836 mlxsw_reg_smid_pack(smid_pl, mid_idx, 837 mlxsw_sp_router_port(mlxsw_sp), add); 838 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 839 kfree(smid_pl); 840 return err; 841 } 842 843 static void 844 mlxsw_sp_bridge_mrouter_update_mdb(struct mlxsw_sp *mlxsw_sp, 845 struct mlxsw_sp_bridge_device *bridge_device, 846 bool add) 847 { 848 struct mlxsw_sp_mid *mid; 849 850 list_for_each_entry(mid, &bridge_device->mids_list, list) 851 mlxsw_sp_smid_router_port_set(mlxsw_sp, mid->mid, add); 852 } 853 854 static int 855 mlxsw_sp_port_attr_br_mrouter_set(struct mlxsw_sp_port *mlxsw_sp_port, 856 struct switchdev_trans *trans, 857 struct net_device *orig_dev, 858 bool is_mrouter) 859 { 860 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 861 struct mlxsw_sp_bridge_device *bridge_device; 862 863 if (switchdev_trans_ph_prepare(trans)) 864 return 0; 865 866 /* It's possible we failed to enslave the port, yet this 867 * operation is executed due to it being deferred. 868 */ 869 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev); 870 if (!bridge_device) 871 return 0; 872 873 if (bridge_device->mrouter != is_mrouter) 874 mlxsw_sp_bridge_mrouter_update_mdb(mlxsw_sp, bridge_device, 875 is_mrouter); 876 bridge_device->mrouter = is_mrouter; 877 return 0; 878 } 879 880 static int mlxsw_sp_port_attr_set(struct net_device *dev, 881 const struct switchdev_attr *attr, 882 struct switchdev_trans *trans) 883 { 884 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 885 int err; 886 887 switch (attr->id) { 888 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 889 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans, 890 attr->orig_dev, 891 attr->u.stp_state); 892 break; 893 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 894 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans, 895 attr->orig_dev, 896 attr->u.brport_flags); 897 break; 898 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: 899 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans, 900 attr->u.ageing_time); 901 break; 902 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 903 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans, 904 attr->orig_dev, 905 attr->u.vlan_filtering); 906 break; 907 case SWITCHDEV_ATTR_ID_PORT_MROUTER: 908 err = mlxsw_sp_port_attr_mrouter_set(mlxsw_sp_port, trans, 909 attr->orig_dev, 910 attr->u.mrouter); 911 break; 912 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED: 913 err = mlxsw_sp_port_mc_disabled_set(mlxsw_sp_port, trans, 914 attr->orig_dev, 915 attr->u.mc_disabled); 916 break; 917 case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER: 918 err = mlxsw_sp_port_attr_br_mrouter_set(mlxsw_sp_port, trans, 919 attr->orig_dev, 920 attr->u.mrouter); 921 break; 922 default: 923 err = -EOPNOTSUPP; 924 break; 925 } 926 927 if (switchdev_trans_ph_commit(trans)) 928 mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp); 929 930 return err; 931 } 932 933 static int 934 mlxsw_sp_port_vlan_fid_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, 935 struct mlxsw_sp_bridge_port *bridge_port) 936 { 937 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 938 struct mlxsw_sp_bridge_device *bridge_device; 939 u8 local_port = mlxsw_sp_port->local_port; 940 u16 vid = mlxsw_sp_port_vlan->vid; 941 struct mlxsw_sp_fid *fid; 942 int err; 943 944 bridge_device = bridge_port->bridge_device; 945 fid = bridge_device->ops->fid_get(bridge_device, vid); 946 if (IS_ERR(fid)) 947 return PTR_ERR(fid); 948 949 err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, 950 bridge_port->flags & BR_FLOOD); 951 if (err) 952 goto err_fid_uc_flood_set; 953 954 err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, 955 mlxsw_sp_mc_flood(bridge_port)); 956 if (err) 957 goto err_fid_mc_flood_set; 958 959 err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, 960 true); 961 if (err) 962 goto err_fid_bc_flood_set; 963 964 err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid); 965 if (err) 966 goto err_fid_port_vid_map; 967 968 mlxsw_sp_port_vlan->fid = fid; 969 970 return 0; 971 972 err_fid_port_vid_map: 973 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false); 974 err_fid_bc_flood_set: 975 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false); 976 err_fid_mc_flood_set: 977 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false); 978 err_fid_uc_flood_set: 979 mlxsw_sp_fid_put(fid); 980 return err; 981 } 982 983 static void 984 mlxsw_sp_port_vlan_fid_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 985 { 986 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 987 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 988 u8 local_port = mlxsw_sp_port->local_port; 989 u16 vid = mlxsw_sp_port_vlan->vid; 990 991 mlxsw_sp_port_vlan->fid = NULL; 992 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); 993 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false); 994 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false); 995 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false); 996 mlxsw_sp_fid_put(fid); 997 } 998 999 static u16 1000 mlxsw_sp_port_pvid_determine(const struct mlxsw_sp_port *mlxsw_sp_port, 1001 u16 vid, bool is_pvid) 1002 { 1003 if (is_pvid) 1004 return vid; 1005 else if (mlxsw_sp_port->pvid == vid) 1006 return 0; /* Dis-allow untagged packets */ 1007 else 1008 return mlxsw_sp_port->pvid; 1009 } 1010 1011 static int 1012 mlxsw_sp_port_vlan_bridge_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, 1013 struct mlxsw_sp_bridge_port *bridge_port) 1014 { 1015 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 1016 struct mlxsw_sp_bridge_vlan *bridge_vlan; 1017 u16 vid = mlxsw_sp_port_vlan->vid; 1018 int err; 1019 1020 /* No need to continue if only VLAN flags were changed */ 1021 if (mlxsw_sp_port_vlan->bridge_port) 1022 return 0; 1023 1024 err = mlxsw_sp_port_vlan_fid_join(mlxsw_sp_port_vlan, bridge_port); 1025 if (err) 1026 return err; 1027 1028 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, 1029 bridge_port->flags & BR_LEARNING); 1030 if (err) 1031 goto err_port_vid_learning_set; 1032 1033 err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, 1034 bridge_port->stp_state); 1035 if (err) 1036 goto err_port_vid_stp_set; 1037 1038 bridge_vlan = mlxsw_sp_bridge_vlan_get(bridge_port, vid); 1039 if (!bridge_vlan) { 1040 err = -ENOMEM; 1041 goto err_bridge_vlan_get; 1042 } 1043 1044 list_add(&mlxsw_sp_port_vlan->bridge_vlan_node, 1045 &bridge_vlan->port_vlan_list); 1046 1047 mlxsw_sp_bridge_port_get(mlxsw_sp_port->mlxsw_sp->bridge, 1048 bridge_port->dev); 1049 mlxsw_sp_port_vlan->bridge_port = bridge_port; 1050 1051 return 0; 1052 1053 err_bridge_vlan_get: 1054 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED); 1055 err_port_vid_stp_set: 1056 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 1057 err_port_vid_learning_set: 1058 mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan); 1059 return err; 1060 } 1061 1062 void 1063 mlxsw_sp_port_vlan_bridge_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 1064 { 1065 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 1066 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 1067 struct mlxsw_sp_bridge_vlan *bridge_vlan; 1068 struct mlxsw_sp_bridge_port *bridge_port; 1069 u16 vid = mlxsw_sp_port_vlan->vid; 1070 bool last_port, last_vlan; 1071 1072 if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021Q && 1073 mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021D)) 1074 return; 1075 1076 bridge_port = mlxsw_sp_port_vlan->bridge_port; 1077 last_vlan = list_is_singular(&bridge_port->vlans_list); 1078 bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid); 1079 last_port = list_is_singular(&bridge_vlan->port_vlan_list); 1080 1081 list_del(&mlxsw_sp_port_vlan->bridge_vlan_node); 1082 mlxsw_sp_bridge_vlan_put(bridge_vlan); 1083 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED); 1084 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 1085 if (last_port) 1086 mlxsw_sp_bridge_port_fdb_flush(mlxsw_sp_port->mlxsw_sp, 1087 bridge_port, 1088 mlxsw_sp_fid_index(fid)); 1089 if (last_vlan) 1090 mlxsw_sp_bridge_port_mdb_flush(mlxsw_sp_port, bridge_port); 1091 1092 mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan); 1093 1094 mlxsw_sp_bridge_port_put(mlxsw_sp_port->mlxsw_sp->bridge, bridge_port); 1095 mlxsw_sp_port_vlan->bridge_port = NULL; 1096 } 1097 1098 static int 1099 mlxsw_sp_bridge_port_vlan_add(struct mlxsw_sp_port *mlxsw_sp_port, 1100 struct mlxsw_sp_bridge_port *bridge_port, 1101 u16 vid, bool is_untagged, bool is_pvid) 1102 { 1103 u16 pvid = mlxsw_sp_port_pvid_determine(mlxsw_sp_port, vid, is_pvid); 1104 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1105 u16 old_pvid = mlxsw_sp_port->pvid; 1106 int err; 1107 1108 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid); 1109 if (IS_ERR(mlxsw_sp_port_vlan)) 1110 return PTR_ERR(mlxsw_sp_port_vlan); 1111 1112 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true, 1113 is_untagged); 1114 if (err) 1115 goto err_port_vlan_set; 1116 1117 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1118 if (err) 1119 goto err_port_pvid_set; 1120 1121 err = mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1122 if (err) 1123 goto err_port_vlan_bridge_join; 1124 1125 return 0; 1126 1127 err_port_vlan_bridge_join: 1128 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid); 1129 err_port_pvid_set: 1130 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1131 err_port_vlan_set: 1132 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1133 return err; 1134 } 1135 1136 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port, 1137 const struct switchdev_obj_port_vlan *vlan, 1138 struct switchdev_trans *trans) 1139 { 1140 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 1141 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 1142 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1143 struct net_device *orig_dev = vlan->obj.orig_dev; 1144 struct mlxsw_sp_bridge_port *bridge_port; 1145 u16 vid; 1146 1147 if (switchdev_trans_ph_prepare(trans)) 1148 return 0; 1149 1150 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1151 if (WARN_ON(!bridge_port)) 1152 return -EINVAL; 1153 1154 if (!bridge_port->bridge_device->vlan_enabled) 1155 return 0; 1156 1157 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1158 int err; 1159 1160 err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port, 1161 vid, flag_untagged, 1162 flag_pvid); 1163 if (err) 1164 return err; 1165 } 1166 1167 return 0; 1168 } 1169 1170 static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged) 1171 { 1172 return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID : 1173 MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID; 1174 } 1175 1176 static int 1177 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 1178 struct mlxsw_sp_bridge_port *bridge_port, 1179 u16 fid_index) 1180 { 1181 bool lagged = bridge_port->lagged; 1182 char sfdf_pl[MLXSW_REG_SFDF_LEN]; 1183 u16 system_port; 1184 1185 system_port = lagged ? bridge_port->lag_id : bridge_port->system_port; 1186 mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged)); 1187 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index); 1188 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port); 1189 1190 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); 1191 } 1192 1193 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic) 1194 { 1195 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS : 1196 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY; 1197 } 1198 1199 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding) 1200 { 1201 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT : 1202 MLXSW_REG_SFD_OP_WRITE_REMOVE; 1203 } 1204 1205 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1206 const char *mac, u16 fid, bool adding, 1207 enum mlxsw_reg_sfd_rec_action action, 1208 bool dynamic) 1209 { 1210 char *sfd_pl; 1211 u8 num_rec; 1212 int err; 1213 1214 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1215 if (!sfd_pl) 1216 return -ENOMEM; 1217 1218 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1219 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1220 mac, fid, action, local_port); 1221 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1222 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1223 if (err) 1224 goto out; 1225 1226 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1227 err = -EBUSY; 1228 1229 out: 1230 kfree(sfd_pl); 1231 return err; 1232 } 1233 1234 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1235 const char *mac, u16 fid, bool adding, 1236 bool dynamic) 1237 { 1238 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding, 1239 MLXSW_REG_SFD_REC_ACTION_NOP, dynamic); 1240 } 1241 1242 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid, 1243 bool adding) 1244 { 1245 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding, 1246 MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER, 1247 false); 1248 } 1249 1250 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id, 1251 const char *mac, u16 fid, u16 lag_vid, 1252 bool adding, bool dynamic) 1253 { 1254 char *sfd_pl; 1255 u8 num_rec; 1256 int err; 1257 1258 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1259 if (!sfd_pl) 1260 return -ENOMEM; 1261 1262 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1263 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1264 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 1265 lag_vid, lag_id); 1266 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1267 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1268 if (err) 1269 goto out; 1270 1271 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1272 err = -EBUSY; 1273 1274 out: 1275 kfree(sfd_pl); 1276 return err; 1277 } 1278 1279 static int 1280 mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port, 1281 struct switchdev_notifier_fdb_info *fdb_info, bool adding) 1282 { 1283 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1284 struct net_device *orig_dev = fdb_info->info.dev; 1285 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1286 struct mlxsw_sp_bridge_device *bridge_device; 1287 struct mlxsw_sp_bridge_port *bridge_port; 1288 u16 fid_index, vid; 1289 1290 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1291 if (!bridge_port) 1292 return -EINVAL; 1293 1294 bridge_device = bridge_port->bridge_device; 1295 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1296 bridge_device, 1297 fdb_info->vid); 1298 if (!mlxsw_sp_port_vlan) 1299 return 0; 1300 1301 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1302 vid = mlxsw_sp_port_vlan->vid; 1303 1304 if (!bridge_port->lagged) 1305 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 1306 bridge_port->system_port, 1307 fdb_info->addr, fid_index, 1308 adding, false); 1309 else 1310 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, 1311 bridge_port->lag_id, 1312 fdb_info->addr, fid_index, 1313 vid, adding, false); 1314 } 1315 1316 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr, 1317 u16 fid, u16 mid_idx, bool adding) 1318 { 1319 char *sfd_pl; 1320 u8 num_rec; 1321 int err; 1322 1323 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1324 if (!sfd_pl) 1325 return -ENOMEM; 1326 1327 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1328 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid, 1329 MLXSW_REG_SFD_REC_ACTION_NOP, mid_idx); 1330 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1331 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1332 if (err) 1333 goto out; 1334 1335 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1336 err = -EBUSY; 1337 1338 out: 1339 kfree(sfd_pl); 1340 return err; 1341 } 1342 1343 static int mlxsw_sp_port_smid_full_entry(struct mlxsw_sp *mlxsw_sp, u16 mid_idx, 1344 long *ports_bitmap, 1345 bool set_router_port) 1346 { 1347 char *smid_pl; 1348 int err, i; 1349 1350 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1351 if (!smid_pl) 1352 return -ENOMEM; 1353 1354 mlxsw_reg_smid_pack(smid_pl, mid_idx, 0, false); 1355 for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++) { 1356 if (mlxsw_sp->ports[i]) 1357 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1); 1358 } 1359 1360 mlxsw_reg_smid_port_mask_set(smid_pl, 1361 mlxsw_sp_router_port(mlxsw_sp), 1); 1362 1363 for_each_set_bit(i, ports_bitmap, mlxsw_core_max_ports(mlxsw_sp->core)) 1364 mlxsw_reg_smid_port_set(smid_pl, i, 1); 1365 1366 mlxsw_reg_smid_port_set(smid_pl, mlxsw_sp_router_port(mlxsw_sp), 1367 set_router_port); 1368 1369 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1370 kfree(smid_pl); 1371 return err; 1372 } 1373 1374 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, 1375 u16 mid_idx, bool add) 1376 { 1377 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1378 char *smid_pl; 1379 int err; 1380 1381 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1382 if (!smid_pl) 1383 return -ENOMEM; 1384 1385 mlxsw_reg_smid_pack(smid_pl, mid_idx, mlxsw_sp_port->local_port, add); 1386 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1387 kfree(smid_pl); 1388 return err; 1389 } 1390 1391 static struct 1392 mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp_bridge_device *bridge_device, 1393 const unsigned char *addr, 1394 u16 fid) 1395 { 1396 struct mlxsw_sp_mid *mid; 1397 1398 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1399 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid) 1400 return mid; 1401 } 1402 return NULL; 1403 } 1404 1405 static void 1406 mlxsw_sp_bridge_port_get_ports_bitmap(struct mlxsw_sp *mlxsw_sp, 1407 struct mlxsw_sp_bridge_port *bridge_port, 1408 unsigned long *ports_bitmap) 1409 { 1410 struct mlxsw_sp_port *mlxsw_sp_port; 1411 u64 max_lag_members, i; 1412 int lag_id; 1413 1414 if (!bridge_port->lagged) { 1415 set_bit(bridge_port->system_port, ports_bitmap); 1416 } else { 1417 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1418 MAX_LAG_MEMBERS); 1419 lag_id = bridge_port->lag_id; 1420 for (i = 0; i < max_lag_members; i++) { 1421 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, 1422 lag_id, i); 1423 if (mlxsw_sp_port) 1424 set_bit(mlxsw_sp_port->local_port, 1425 ports_bitmap); 1426 } 1427 } 1428 } 1429 1430 static void 1431 mlxsw_sp_mc_get_mrouters_bitmap(unsigned long *flood_bitmap, 1432 struct mlxsw_sp_bridge_device *bridge_device, 1433 struct mlxsw_sp *mlxsw_sp) 1434 { 1435 struct mlxsw_sp_bridge_port *bridge_port; 1436 1437 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 1438 if (bridge_port->mrouter) { 1439 mlxsw_sp_bridge_port_get_ports_bitmap(mlxsw_sp, 1440 bridge_port, 1441 flood_bitmap); 1442 } 1443 } 1444 } 1445 1446 static bool 1447 mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1448 struct mlxsw_sp_mid *mid, 1449 struct mlxsw_sp_bridge_device *bridge_device) 1450 { 1451 long *flood_bitmap; 1452 int num_of_ports; 1453 int alloc_size; 1454 u16 mid_idx; 1455 int err; 1456 1457 mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap, 1458 MLXSW_SP_MID_MAX); 1459 if (mid_idx == MLXSW_SP_MID_MAX) 1460 return false; 1461 1462 num_of_ports = mlxsw_core_max_ports(mlxsw_sp->core); 1463 alloc_size = sizeof(long) * BITS_TO_LONGS(num_of_ports); 1464 flood_bitmap = kzalloc(alloc_size, GFP_KERNEL); 1465 if (!flood_bitmap) 1466 return false; 1467 1468 bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports); 1469 mlxsw_sp_mc_get_mrouters_bitmap(flood_bitmap, bridge_device, mlxsw_sp); 1470 1471 mid->mid = mid_idx; 1472 err = mlxsw_sp_port_smid_full_entry(mlxsw_sp, mid_idx, flood_bitmap, 1473 bridge_device->mrouter); 1474 kfree(flood_bitmap); 1475 if (err) 1476 return false; 1477 1478 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid_idx, 1479 true); 1480 if (err) 1481 return false; 1482 1483 set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap); 1484 mid->in_hw = true; 1485 return true; 1486 } 1487 1488 static int mlxsw_sp_mc_remove_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1489 struct mlxsw_sp_mid *mid) 1490 { 1491 if (!mid->in_hw) 1492 return 0; 1493 1494 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap); 1495 mid->in_hw = false; 1496 return mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid->mid, 1497 false); 1498 } 1499 1500 static struct 1501 mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp, 1502 struct mlxsw_sp_bridge_device *bridge_device, 1503 const unsigned char *addr, 1504 u16 fid) 1505 { 1506 struct mlxsw_sp_mid *mid; 1507 size_t alloc_size; 1508 1509 mid = kzalloc(sizeof(*mid), GFP_KERNEL); 1510 if (!mid) 1511 return NULL; 1512 1513 alloc_size = sizeof(unsigned long) * 1514 BITS_TO_LONGS(mlxsw_core_max_ports(mlxsw_sp->core)); 1515 1516 mid->ports_in_mid = kzalloc(alloc_size, GFP_KERNEL); 1517 if (!mid->ports_in_mid) 1518 goto err_ports_in_mid_alloc; 1519 1520 ether_addr_copy(mid->addr, addr); 1521 mid->fid = fid; 1522 mid->in_hw = false; 1523 1524 if (!bridge_device->multicast_enabled) 1525 goto out; 1526 1527 if (!mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, bridge_device)) 1528 goto err_write_mdb_entry; 1529 1530 out: 1531 list_add_tail(&mid->list, &bridge_device->mids_list); 1532 return mid; 1533 1534 err_write_mdb_entry: 1535 kfree(mid->ports_in_mid); 1536 err_ports_in_mid_alloc: 1537 kfree(mid); 1538 return NULL; 1539 } 1540 1541 static int mlxsw_sp_port_remove_from_mid(struct mlxsw_sp_port *mlxsw_sp_port, 1542 struct mlxsw_sp_mid *mid) 1543 { 1544 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1545 int err = 0; 1546 1547 clear_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1548 if (bitmap_empty(mid->ports_in_mid, 1549 mlxsw_core_max_ports(mlxsw_sp->core))) { 1550 err = mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1551 list_del(&mid->list); 1552 kfree(mid->ports_in_mid); 1553 kfree(mid); 1554 } 1555 return err; 1556 } 1557 1558 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port, 1559 const struct switchdev_obj_port_mdb *mdb, 1560 struct switchdev_trans *trans) 1561 { 1562 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1563 struct net_device *orig_dev = mdb->obj.orig_dev; 1564 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1565 struct net_device *dev = mlxsw_sp_port->dev; 1566 struct mlxsw_sp_bridge_device *bridge_device; 1567 struct mlxsw_sp_bridge_port *bridge_port; 1568 struct mlxsw_sp_mid *mid; 1569 u16 fid_index; 1570 int err = 0; 1571 1572 if (switchdev_trans_ph_prepare(trans)) 1573 return 0; 1574 1575 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1576 if (!bridge_port) 1577 return 0; 1578 1579 bridge_device = bridge_port->bridge_device; 1580 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1581 bridge_device, 1582 mdb->vid); 1583 if (!mlxsw_sp_port_vlan) 1584 return 0; 1585 1586 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1587 1588 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1589 if (!mid) { 1590 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, bridge_device, mdb->addr, 1591 fid_index); 1592 if (!mid) { 1593 netdev_err(dev, "Unable to allocate MC group\n"); 1594 return -ENOMEM; 1595 } 1596 } 1597 set_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1598 1599 if (!bridge_device->multicast_enabled) 1600 return 0; 1601 1602 if (bridge_port->mrouter) 1603 return 0; 1604 1605 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true); 1606 if (err) { 1607 netdev_err(dev, "Unable to set SMID\n"); 1608 goto err_out; 1609 } 1610 1611 return 0; 1612 1613 err_out: 1614 mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1615 return err; 1616 } 1617 1618 static void 1619 mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port, 1620 struct mlxsw_sp_bridge_device 1621 *bridge_device) 1622 { 1623 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1624 struct mlxsw_sp_mid *mid; 1625 bool mc_enabled; 1626 1627 mc_enabled = bridge_device->multicast_enabled; 1628 1629 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1630 if (mc_enabled) 1631 mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, 1632 bridge_device); 1633 else 1634 mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1635 } 1636 } 1637 1638 static void 1639 mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port, 1640 struct mlxsw_sp_bridge_port *bridge_port, 1641 bool add) 1642 { 1643 struct mlxsw_sp_bridge_device *bridge_device; 1644 struct mlxsw_sp_mid *mid; 1645 1646 bridge_device = bridge_port->bridge_device; 1647 1648 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1649 if (!test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) 1650 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, add); 1651 } 1652 } 1653 1654 struct mlxsw_sp_span_respin_work { 1655 struct work_struct work; 1656 struct mlxsw_sp *mlxsw_sp; 1657 }; 1658 1659 static void mlxsw_sp_span_respin_work(struct work_struct *work) 1660 { 1661 struct mlxsw_sp_span_respin_work *respin_work = 1662 container_of(work, struct mlxsw_sp_span_respin_work, work); 1663 1664 rtnl_lock(); 1665 mlxsw_sp_span_respin(respin_work->mlxsw_sp); 1666 rtnl_unlock(); 1667 kfree(respin_work); 1668 } 1669 1670 static void mlxsw_sp_span_respin_schedule(struct mlxsw_sp *mlxsw_sp) 1671 { 1672 struct mlxsw_sp_span_respin_work *respin_work; 1673 1674 respin_work = kzalloc(sizeof(*respin_work), GFP_ATOMIC); 1675 if (!respin_work) 1676 return; 1677 1678 INIT_WORK(&respin_work->work, mlxsw_sp_span_respin_work); 1679 respin_work->mlxsw_sp = mlxsw_sp; 1680 1681 mlxsw_core_schedule_work(&respin_work->work); 1682 } 1683 1684 static int mlxsw_sp_port_obj_add(struct net_device *dev, 1685 const struct switchdev_obj *obj, 1686 struct switchdev_trans *trans) 1687 { 1688 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1689 const struct switchdev_obj_port_vlan *vlan; 1690 int err = 0; 1691 1692 switch (obj->id) { 1693 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1694 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); 1695 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, trans); 1696 1697 if (switchdev_trans_ph_commit(trans)) { 1698 /* The event is emitted before the changes are actually 1699 * applied to the bridge. Therefore schedule the respin 1700 * call for later, so that the respin logic sees the 1701 * updated bridge state. 1702 */ 1703 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1704 } 1705 break; 1706 case SWITCHDEV_OBJ_ID_PORT_MDB: 1707 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port, 1708 SWITCHDEV_OBJ_PORT_MDB(obj), 1709 trans); 1710 break; 1711 default: 1712 err = -EOPNOTSUPP; 1713 break; 1714 } 1715 1716 return err; 1717 } 1718 1719 static void 1720 mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port, 1721 struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 1722 { 1723 u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid; 1724 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1725 1726 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1727 if (WARN_ON(!mlxsw_sp_port_vlan)) 1728 return; 1729 1730 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1731 mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1732 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1733 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1734 } 1735 1736 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 1737 const struct switchdev_obj_port_vlan *vlan) 1738 { 1739 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1740 struct net_device *orig_dev = vlan->obj.orig_dev; 1741 struct mlxsw_sp_bridge_port *bridge_port; 1742 u16 vid; 1743 1744 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1745 if (WARN_ON(!bridge_port)) 1746 return -EINVAL; 1747 1748 if (!bridge_port->bridge_device->vlan_enabled) 1749 return 0; 1750 1751 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) 1752 mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid); 1753 1754 return 0; 1755 } 1756 1757 static int 1758 __mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1759 struct mlxsw_sp_bridge_port *bridge_port, 1760 struct mlxsw_sp_mid *mid) 1761 { 1762 struct net_device *dev = mlxsw_sp_port->dev; 1763 int err; 1764 1765 if (bridge_port->bridge_device->multicast_enabled && 1766 !bridge_port->mrouter) { 1767 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1768 if (err) 1769 netdev_err(dev, "Unable to remove port from SMID\n"); 1770 } 1771 1772 err = mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1773 if (err) 1774 netdev_err(dev, "Unable to remove MC SFD\n"); 1775 1776 return err; 1777 } 1778 1779 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1780 const struct switchdev_obj_port_mdb *mdb) 1781 { 1782 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1783 struct net_device *orig_dev = mdb->obj.orig_dev; 1784 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1785 struct mlxsw_sp_bridge_device *bridge_device; 1786 struct net_device *dev = mlxsw_sp_port->dev; 1787 struct mlxsw_sp_bridge_port *bridge_port; 1788 struct mlxsw_sp_mid *mid; 1789 u16 fid_index; 1790 1791 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1792 if (!bridge_port) 1793 return 0; 1794 1795 bridge_device = bridge_port->bridge_device; 1796 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1797 bridge_device, 1798 mdb->vid); 1799 if (!mlxsw_sp_port_vlan) 1800 return 0; 1801 1802 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1803 1804 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1805 if (!mid) { 1806 netdev_err(dev, "Unable to remove port from MC DB\n"); 1807 return -EINVAL; 1808 } 1809 1810 return __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, mid); 1811 } 1812 1813 static void 1814 mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, 1815 struct mlxsw_sp_bridge_port *bridge_port) 1816 { 1817 struct mlxsw_sp_bridge_device *bridge_device; 1818 struct mlxsw_sp_mid *mid, *tmp; 1819 1820 bridge_device = bridge_port->bridge_device; 1821 1822 list_for_each_entry_safe(mid, tmp, &bridge_device->mids_list, list) { 1823 if (test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) { 1824 __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, 1825 mid); 1826 } else if (bridge_device->multicast_enabled && 1827 bridge_port->mrouter) { 1828 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1829 } 1830 } 1831 } 1832 1833 static int mlxsw_sp_port_obj_del(struct net_device *dev, 1834 const struct switchdev_obj *obj) 1835 { 1836 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1837 int err = 0; 1838 1839 switch (obj->id) { 1840 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1841 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port, 1842 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1843 break; 1844 case SWITCHDEV_OBJ_ID_PORT_MDB: 1845 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port, 1846 SWITCHDEV_OBJ_PORT_MDB(obj)); 1847 break; 1848 default: 1849 err = -EOPNOTSUPP; 1850 break; 1851 } 1852 1853 mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp); 1854 1855 return err; 1856 } 1857 1858 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, 1859 u16 lag_id) 1860 { 1861 struct mlxsw_sp_port *mlxsw_sp_port; 1862 u64 max_lag_members; 1863 int i; 1864 1865 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1866 MAX_LAG_MEMBERS); 1867 for (i = 0; i < max_lag_members; i++) { 1868 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i); 1869 if (mlxsw_sp_port) 1870 return mlxsw_sp_port; 1871 } 1872 return NULL; 1873 } 1874 1875 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { 1876 .switchdev_port_attr_get = mlxsw_sp_port_attr_get, 1877 .switchdev_port_attr_set = mlxsw_sp_port_attr_set, 1878 .switchdev_port_obj_add = mlxsw_sp_port_obj_add, 1879 .switchdev_port_obj_del = mlxsw_sp_port_obj_del, 1880 }; 1881 1882 static int 1883 mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1884 struct mlxsw_sp_bridge_port *bridge_port, 1885 struct mlxsw_sp_port *mlxsw_sp_port, 1886 struct netlink_ext_ack *extack) 1887 { 1888 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1889 1890 if (is_vlan_dev(bridge_port->dev)) { 1891 NL_SET_ERR_MSG_MOD(extack, "Can not enslave a VLAN device to a VLAN-aware bridge"); 1892 return -EINVAL; 1893 } 1894 1895 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1); 1896 if (WARN_ON(!mlxsw_sp_port_vlan)) 1897 return -EINVAL; 1898 1899 /* Let VLAN-aware bridge take care of its own VLANs */ 1900 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1901 1902 return 0; 1903 } 1904 1905 static void 1906 mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1907 struct mlxsw_sp_bridge_port *bridge_port, 1908 struct mlxsw_sp_port *mlxsw_sp_port) 1909 { 1910 mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1); 1911 /* Make sure untagged frames are allowed to ingress */ 1912 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1); 1913 } 1914 1915 static struct mlxsw_sp_fid * 1916 mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1917 u16 vid) 1918 { 1919 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1920 1921 return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid); 1922 } 1923 1924 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = { 1925 .port_join = mlxsw_sp_bridge_8021q_port_join, 1926 .port_leave = mlxsw_sp_bridge_8021q_port_leave, 1927 .fid_get = mlxsw_sp_bridge_8021q_fid_get, 1928 }; 1929 1930 static bool 1931 mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port, 1932 const struct net_device *br_dev) 1933 { 1934 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1935 1936 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 1937 list) { 1938 if (mlxsw_sp_port_vlan->bridge_port && 1939 mlxsw_sp_port_vlan->bridge_port->bridge_device->dev == 1940 br_dev) 1941 return true; 1942 } 1943 1944 return false; 1945 } 1946 1947 static int 1948 mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1949 struct mlxsw_sp_bridge_port *bridge_port, 1950 struct mlxsw_sp_port *mlxsw_sp_port, 1951 struct netlink_ext_ack *extack) 1952 { 1953 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1954 struct net_device *dev = bridge_port->dev; 1955 u16 vid; 1956 1957 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 1958 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1959 if (WARN_ON(!mlxsw_sp_port_vlan)) 1960 return -EINVAL; 1961 1962 if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) { 1963 NL_SET_ERR_MSG_MOD(extack, "Can not bridge VLAN uppers of the same port"); 1964 return -EINVAL; 1965 } 1966 1967 /* Port is no longer usable as a router interface */ 1968 if (mlxsw_sp_port_vlan->fid) 1969 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 1970 1971 return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1972 } 1973 1974 static void 1975 mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1976 struct mlxsw_sp_bridge_port *bridge_port, 1977 struct mlxsw_sp_port *mlxsw_sp_port) 1978 { 1979 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1980 struct net_device *dev = bridge_port->dev; 1981 u16 vid; 1982 1983 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 1984 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1985 if (WARN_ON(!mlxsw_sp_port_vlan)) 1986 return; 1987 1988 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1989 } 1990 1991 static struct mlxsw_sp_fid * 1992 mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1993 u16 vid) 1994 { 1995 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1996 1997 return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex); 1998 } 1999 2000 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = { 2001 .port_join = mlxsw_sp_bridge_8021d_port_join, 2002 .port_leave = mlxsw_sp_bridge_8021d_port_leave, 2003 .fid_get = mlxsw_sp_bridge_8021d_fid_get, 2004 }; 2005 2006 int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port, 2007 struct net_device *brport_dev, 2008 struct net_device *br_dev, 2009 struct netlink_ext_ack *extack) 2010 { 2011 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2012 struct mlxsw_sp_bridge_device *bridge_device; 2013 struct mlxsw_sp_bridge_port *bridge_port; 2014 int err; 2015 2016 bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev); 2017 if (IS_ERR(bridge_port)) 2018 return PTR_ERR(bridge_port); 2019 bridge_device = bridge_port->bridge_device; 2020 2021 err = bridge_device->ops->port_join(bridge_device, bridge_port, 2022 mlxsw_sp_port, extack); 2023 if (err) 2024 goto err_port_join; 2025 2026 return 0; 2027 2028 err_port_join: 2029 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2030 return err; 2031 } 2032 2033 void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, 2034 struct net_device *brport_dev, 2035 struct net_device *br_dev) 2036 { 2037 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2038 struct mlxsw_sp_bridge_device *bridge_device; 2039 struct mlxsw_sp_bridge_port *bridge_port; 2040 2041 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); 2042 if (!bridge_device) 2043 return; 2044 bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 2045 if (!bridge_port) 2046 return; 2047 2048 bridge_device->ops->port_leave(bridge_device, bridge_port, 2049 mlxsw_sp_port); 2050 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2051 } 2052 2053 static void 2054 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, 2055 const char *mac, u16 vid, 2056 struct net_device *dev) 2057 { 2058 struct switchdev_notifier_fdb_info info; 2059 2060 info.addr = mac; 2061 info.vid = vid; 2062 call_switchdev_notifiers(type, dev, &info.info); 2063 } 2064 2065 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, 2066 char *sfn_pl, int rec_index, 2067 bool adding) 2068 { 2069 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2070 struct mlxsw_sp_bridge_device *bridge_device; 2071 struct mlxsw_sp_bridge_port *bridge_port; 2072 struct mlxsw_sp_port *mlxsw_sp_port; 2073 enum switchdev_notifier_type type; 2074 char mac[ETH_ALEN]; 2075 u8 local_port; 2076 u16 vid, fid; 2077 bool do_notification = true; 2078 int err; 2079 2080 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port); 2081 mlxsw_sp_port = mlxsw_sp->ports[local_port]; 2082 if (!mlxsw_sp_port) { 2083 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n"); 2084 goto just_remove; 2085 } 2086 2087 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2088 if (!mlxsw_sp_port_vlan) { 2089 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2090 goto just_remove; 2091 } 2092 2093 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2094 if (!bridge_port) { 2095 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2096 goto just_remove; 2097 } 2098 2099 bridge_device = bridge_port->bridge_device; 2100 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2101 2102 do_fdb_op: 2103 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, 2104 adding, true); 2105 if (err) { 2106 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2107 return; 2108 } 2109 2110 if (!do_notification) 2111 return; 2112 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2113 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2114 2115 return; 2116 2117 just_remove: 2118 adding = false; 2119 do_notification = false; 2120 goto do_fdb_op; 2121 } 2122 2123 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, 2124 char *sfn_pl, int rec_index, 2125 bool adding) 2126 { 2127 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2128 struct mlxsw_sp_bridge_device *bridge_device; 2129 struct mlxsw_sp_bridge_port *bridge_port; 2130 struct mlxsw_sp_port *mlxsw_sp_port; 2131 enum switchdev_notifier_type type; 2132 char mac[ETH_ALEN]; 2133 u16 lag_vid = 0; 2134 u16 lag_id; 2135 u16 vid, fid; 2136 bool do_notification = true; 2137 int err; 2138 2139 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id); 2140 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 2141 if (!mlxsw_sp_port) { 2142 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n"); 2143 goto just_remove; 2144 } 2145 2146 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2147 if (!mlxsw_sp_port_vlan) { 2148 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2149 goto just_remove; 2150 } 2151 2152 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2153 if (!bridge_port) { 2154 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2155 goto just_remove; 2156 } 2157 2158 bridge_device = bridge_port->bridge_device; 2159 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2160 lag_vid = mlxsw_sp_port_vlan->vid; 2161 2162 do_fdb_op: 2163 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid, 2164 adding, true); 2165 if (err) { 2166 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2167 return; 2168 } 2169 2170 if (!do_notification) 2171 return; 2172 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2173 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2174 2175 return; 2176 2177 just_remove: 2178 adding = false; 2179 do_notification = false; 2180 goto do_fdb_op; 2181 } 2182 2183 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, 2184 char *sfn_pl, int rec_index) 2185 { 2186 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) { 2187 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC: 2188 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2189 rec_index, true); 2190 break; 2191 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC: 2192 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2193 rec_index, false); 2194 break; 2195 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG: 2196 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2197 rec_index, true); 2198 break; 2199 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG: 2200 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2201 rec_index, false); 2202 break; 2203 } 2204 } 2205 2206 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp) 2207 { 2208 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2209 2210 mlxsw_core_schedule_dw(&bridge->fdb_notify.dw, 2211 msecs_to_jiffies(bridge->fdb_notify.interval)); 2212 } 2213 2214 static void mlxsw_sp_fdb_notify_work(struct work_struct *work) 2215 { 2216 struct mlxsw_sp_bridge *bridge; 2217 struct mlxsw_sp *mlxsw_sp; 2218 char *sfn_pl; 2219 u8 num_rec; 2220 int i; 2221 int err; 2222 2223 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL); 2224 if (!sfn_pl) 2225 return; 2226 2227 bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work); 2228 mlxsw_sp = bridge->mlxsw_sp; 2229 2230 rtnl_lock(); 2231 mlxsw_reg_sfn_pack(sfn_pl); 2232 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); 2233 if (err) { 2234 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n"); 2235 goto out; 2236 } 2237 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl); 2238 for (i = 0; i < num_rec; i++) 2239 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); 2240 2241 out: 2242 rtnl_unlock(); 2243 kfree(sfn_pl); 2244 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2245 } 2246 2247 struct mlxsw_sp_switchdev_event_work { 2248 struct work_struct work; 2249 struct switchdev_notifier_fdb_info fdb_info; 2250 struct net_device *dev; 2251 unsigned long event; 2252 }; 2253 2254 static void mlxsw_sp_switchdev_event_work(struct work_struct *work) 2255 { 2256 struct mlxsw_sp_switchdev_event_work *switchdev_work = 2257 container_of(work, struct mlxsw_sp_switchdev_event_work, work); 2258 struct net_device *dev = switchdev_work->dev; 2259 struct switchdev_notifier_fdb_info *fdb_info; 2260 struct mlxsw_sp_port *mlxsw_sp_port; 2261 int err; 2262 2263 rtnl_lock(); 2264 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev); 2265 if (!mlxsw_sp_port) 2266 goto out; 2267 2268 switch (switchdev_work->event) { 2269 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2270 fdb_info = &switchdev_work->fdb_info; 2271 if (!fdb_info->added_by_user) 2272 break; 2273 err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true); 2274 if (err) 2275 break; 2276 mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, 2277 fdb_info->addr, 2278 fdb_info->vid, dev); 2279 break; 2280 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2281 fdb_info = &switchdev_work->fdb_info; 2282 if (!fdb_info->added_by_user) 2283 break; 2284 mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false); 2285 break; 2286 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2287 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2288 /* These events are only used to potentially update an existing 2289 * SPAN mirror. 2290 */ 2291 break; 2292 } 2293 2294 mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp); 2295 2296 out: 2297 rtnl_unlock(); 2298 kfree(switchdev_work->fdb_info.addr); 2299 kfree(switchdev_work); 2300 dev_put(dev); 2301 } 2302 2303 /* Called under rcu_read_lock() */ 2304 static int mlxsw_sp_switchdev_event(struct notifier_block *unused, 2305 unsigned long event, void *ptr) 2306 { 2307 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2308 struct mlxsw_sp_switchdev_event_work *switchdev_work; 2309 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2310 2311 if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) 2312 return NOTIFY_DONE; 2313 2314 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2315 if (!switchdev_work) 2316 return NOTIFY_BAD; 2317 2318 INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work); 2319 switchdev_work->dev = dev; 2320 switchdev_work->event = event; 2321 2322 switch (event) { 2323 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ 2324 case SWITCHDEV_FDB_DEL_TO_DEVICE: /* fall through */ 2325 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2326 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2327 memcpy(&switchdev_work->fdb_info, ptr, 2328 sizeof(switchdev_work->fdb_info)); 2329 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2330 if (!switchdev_work->fdb_info.addr) 2331 goto err_addr_alloc; 2332 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2333 fdb_info->addr); 2334 /* Take a reference on the device. This can be either 2335 * upper device containig mlxsw_sp_port or just a 2336 * mlxsw_sp_port 2337 */ 2338 dev_hold(dev); 2339 break; 2340 default: 2341 kfree(switchdev_work); 2342 return NOTIFY_DONE; 2343 } 2344 2345 mlxsw_core_schedule_work(&switchdev_work->work); 2346 2347 return NOTIFY_DONE; 2348 2349 err_addr_alloc: 2350 kfree(switchdev_work); 2351 return NOTIFY_BAD; 2352 } 2353 2354 static struct notifier_block mlxsw_sp_switchdev_notifier = { 2355 .notifier_call = mlxsw_sp_switchdev_event, 2356 }; 2357 2358 u8 2359 mlxsw_sp_bridge_port_stp_state(struct mlxsw_sp_bridge_port *bridge_port) 2360 { 2361 return bridge_port->stp_state; 2362 } 2363 2364 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) 2365 { 2366 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2367 int err; 2368 2369 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME); 2370 if (err) { 2371 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); 2372 return err; 2373 } 2374 2375 err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2376 if (err) { 2377 dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n"); 2378 return err; 2379 } 2380 2381 INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work); 2382 bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; 2383 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2384 return 0; 2385 } 2386 2387 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp) 2388 { 2389 cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw); 2390 unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2391 2392 } 2393 2394 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp) 2395 { 2396 struct mlxsw_sp_bridge *bridge; 2397 2398 bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL); 2399 if (!bridge) 2400 return -ENOMEM; 2401 mlxsw_sp->bridge = bridge; 2402 bridge->mlxsw_sp = mlxsw_sp; 2403 2404 INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list); 2405 2406 bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops; 2407 bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops; 2408 2409 return mlxsw_sp_fdb_init(mlxsw_sp); 2410 } 2411 2412 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) 2413 { 2414 mlxsw_sp_fdb_fini(mlxsw_sp); 2415 WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list)); 2416 kfree(mlxsw_sp->bridge); 2417 } 2418 2419 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) 2420 { 2421 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; 2422 } 2423 2424 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) 2425 { 2426 } 2427