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 (netif_is_bridge_master(orig_dev)) 1148 return -EOPNOTSUPP; 1149 1150 if (switchdev_trans_ph_prepare(trans)) 1151 return 0; 1152 1153 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1154 if (WARN_ON(!bridge_port)) 1155 return -EINVAL; 1156 1157 if (!bridge_port->bridge_device->vlan_enabled) 1158 return 0; 1159 1160 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1161 int err; 1162 1163 err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port, 1164 vid, flag_untagged, 1165 flag_pvid); 1166 if (err) 1167 return err; 1168 } 1169 1170 return 0; 1171 } 1172 1173 static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged) 1174 { 1175 return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID : 1176 MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID; 1177 } 1178 1179 static int 1180 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 1181 struct mlxsw_sp_bridge_port *bridge_port, 1182 u16 fid_index) 1183 { 1184 bool lagged = bridge_port->lagged; 1185 char sfdf_pl[MLXSW_REG_SFDF_LEN]; 1186 u16 system_port; 1187 1188 system_port = lagged ? bridge_port->lag_id : bridge_port->system_port; 1189 mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged)); 1190 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index); 1191 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port); 1192 1193 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); 1194 } 1195 1196 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic) 1197 { 1198 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS : 1199 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY; 1200 } 1201 1202 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding) 1203 { 1204 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT : 1205 MLXSW_REG_SFD_OP_WRITE_REMOVE; 1206 } 1207 1208 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1209 const char *mac, u16 fid, bool adding, 1210 enum mlxsw_reg_sfd_rec_action action, 1211 bool dynamic) 1212 { 1213 char *sfd_pl; 1214 u8 num_rec; 1215 int err; 1216 1217 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1218 if (!sfd_pl) 1219 return -ENOMEM; 1220 1221 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1222 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1223 mac, fid, action, local_port); 1224 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1225 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1226 if (err) 1227 goto out; 1228 1229 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1230 err = -EBUSY; 1231 1232 out: 1233 kfree(sfd_pl); 1234 return err; 1235 } 1236 1237 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1238 const char *mac, u16 fid, bool adding, 1239 bool dynamic) 1240 { 1241 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding, 1242 MLXSW_REG_SFD_REC_ACTION_NOP, dynamic); 1243 } 1244 1245 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid, 1246 bool adding) 1247 { 1248 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding, 1249 MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER, 1250 false); 1251 } 1252 1253 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id, 1254 const char *mac, u16 fid, u16 lag_vid, 1255 bool adding, bool dynamic) 1256 { 1257 char *sfd_pl; 1258 u8 num_rec; 1259 int err; 1260 1261 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1262 if (!sfd_pl) 1263 return -ENOMEM; 1264 1265 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1266 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1267 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 1268 lag_vid, lag_id); 1269 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1270 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1271 if (err) 1272 goto out; 1273 1274 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1275 err = -EBUSY; 1276 1277 out: 1278 kfree(sfd_pl); 1279 return err; 1280 } 1281 1282 static int 1283 mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port, 1284 struct switchdev_notifier_fdb_info *fdb_info, bool adding) 1285 { 1286 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1287 struct net_device *orig_dev = fdb_info->info.dev; 1288 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1289 struct mlxsw_sp_bridge_device *bridge_device; 1290 struct mlxsw_sp_bridge_port *bridge_port; 1291 u16 fid_index, vid; 1292 1293 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1294 if (!bridge_port) 1295 return -EINVAL; 1296 1297 bridge_device = bridge_port->bridge_device; 1298 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1299 bridge_device, 1300 fdb_info->vid); 1301 if (!mlxsw_sp_port_vlan) 1302 return 0; 1303 1304 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1305 vid = mlxsw_sp_port_vlan->vid; 1306 1307 if (!bridge_port->lagged) 1308 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 1309 bridge_port->system_port, 1310 fdb_info->addr, fid_index, 1311 adding, false); 1312 else 1313 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, 1314 bridge_port->lag_id, 1315 fdb_info->addr, fid_index, 1316 vid, adding, false); 1317 } 1318 1319 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr, 1320 u16 fid, u16 mid_idx, bool adding) 1321 { 1322 char *sfd_pl; 1323 u8 num_rec; 1324 int err; 1325 1326 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1327 if (!sfd_pl) 1328 return -ENOMEM; 1329 1330 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1331 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid, 1332 MLXSW_REG_SFD_REC_ACTION_NOP, mid_idx); 1333 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1334 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1335 if (err) 1336 goto out; 1337 1338 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1339 err = -EBUSY; 1340 1341 out: 1342 kfree(sfd_pl); 1343 return err; 1344 } 1345 1346 static int mlxsw_sp_port_smid_full_entry(struct mlxsw_sp *mlxsw_sp, u16 mid_idx, 1347 long *ports_bitmap, 1348 bool set_router_port) 1349 { 1350 char *smid_pl; 1351 int err, i; 1352 1353 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1354 if (!smid_pl) 1355 return -ENOMEM; 1356 1357 mlxsw_reg_smid_pack(smid_pl, mid_idx, 0, false); 1358 for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++) { 1359 if (mlxsw_sp->ports[i]) 1360 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1); 1361 } 1362 1363 mlxsw_reg_smid_port_mask_set(smid_pl, 1364 mlxsw_sp_router_port(mlxsw_sp), 1); 1365 1366 for_each_set_bit(i, ports_bitmap, mlxsw_core_max_ports(mlxsw_sp->core)) 1367 mlxsw_reg_smid_port_set(smid_pl, i, 1); 1368 1369 mlxsw_reg_smid_port_set(smid_pl, mlxsw_sp_router_port(mlxsw_sp), 1370 set_router_port); 1371 1372 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1373 kfree(smid_pl); 1374 return err; 1375 } 1376 1377 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, 1378 u16 mid_idx, bool add) 1379 { 1380 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1381 char *smid_pl; 1382 int err; 1383 1384 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1385 if (!smid_pl) 1386 return -ENOMEM; 1387 1388 mlxsw_reg_smid_pack(smid_pl, mid_idx, mlxsw_sp_port->local_port, add); 1389 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1390 kfree(smid_pl); 1391 return err; 1392 } 1393 1394 static struct 1395 mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp_bridge_device *bridge_device, 1396 const unsigned char *addr, 1397 u16 fid) 1398 { 1399 struct mlxsw_sp_mid *mid; 1400 1401 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1402 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid) 1403 return mid; 1404 } 1405 return NULL; 1406 } 1407 1408 static void 1409 mlxsw_sp_bridge_port_get_ports_bitmap(struct mlxsw_sp *mlxsw_sp, 1410 struct mlxsw_sp_bridge_port *bridge_port, 1411 unsigned long *ports_bitmap) 1412 { 1413 struct mlxsw_sp_port *mlxsw_sp_port; 1414 u64 max_lag_members, i; 1415 int lag_id; 1416 1417 if (!bridge_port->lagged) { 1418 set_bit(bridge_port->system_port, ports_bitmap); 1419 } else { 1420 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1421 MAX_LAG_MEMBERS); 1422 lag_id = bridge_port->lag_id; 1423 for (i = 0; i < max_lag_members; i++) { 1424 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, 1425 lag_id, i); 1426 if (mlxsw_sp_port) 1427 set_bit(mlxsw_sp_port->local_port, 1428 ports_bitmap); 1429 } 1430 } 1431 } 1432 1433 static void 1434 mlxsw_sp_mc_get_mrouters_bitmap(unsigned long *flood_bitmap, 1435 struct mlxsw_sp_bridge_device *bridge_device, 1436 struct mlxsw_sp *mlxsw_sp) 1437 { 1438 struct mlxsw_sp_bridge_port *bridge_port; 1439 1440 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 1441 if (bridge_port->mrouter) { 1442 mlxsw_sp_bridge_port_get_ports_bitmap(mlxsw_sp, 1443 bridge_port, 1444 flood_bitmap); 1445 } 1446 } 1447 } 1448 1449 static bool 1450 mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1451 struct mlxsw_sp_mid *mid, 1452 struct mlxsw_sp_bridge_device *bridge_device) 1453 { 1454 long *flood_bitmap; 1455 int num_of_ports; 1456 int alloc_size; 1457 u16 mid_idx; 1458 int err; 1459 1460 mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap, 1461 MLXSW_SP_MID_MAX); 1462 if (mid_idx == MLXSW_SP_MID_MAX) 1463 return false; 1464 1465 num_of_ports = mlxsw_core_max_ports(mlxsw_sp->core); 1466 alloc_size = sizeof(long) * BITS_TO_LONGS(num_of_ports); 1467 flood_bitmap = kzalloc(alloc_size, GFP_KERNEL); 1468 if (!flood_bitmap) 1469 return false; 1470 1471 bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports); 1472 mlxsw_sp_mc_get_mrouters_bitmap(flood_bitmap, bridge_device, mlxsw_sp); 1473 1474 mid->mid = mid_idx; 1475 err = mlxsw_sp_port_smid_full_entry(mlxsw_sp, mid_idx, flood_bitmap, 1476 bridge_device->mrouter); 1477 kfree(flood_bitmap); 1478 if (err) 1479 return false; 1480 1481 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid_idx, 1482 true); 1483 if (err) 1484 return false; 1485 1486 set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap); 1487 mid->in_hw = true; 1488 return true; 1489 } 1490 1491 static int mlxsw_sp_mc_remove_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1492 struct mlxsw_sp_mid *mid) 1493 { 1494 if (!mid->in_hw) 1495 return 0; 1496 1497 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap); 1498 mid->in_hw = false; 1499 return mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid->mid, 1500 false); 1501 } 1502 1503 static struct 1504 mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp, 1505 struct mlxsw_sp_bridge_device *bridge_device, 1506 const unsigned char *addr, 1507 u16 fid) 1508 { 1509 struct mlxsw_sp_mid *mid; 1510 size_t alloc_size; 1511 1512 mid = kzalloc(sizeof(*mid), GFP_KERNEL); 1513 if (!mid) 1514 return NULL; 1515 1516 alloc_size = sizeof(unsigned long) * 1517 BITS_TO_LONGS(mlxsw_core_max_ports(mlxsw_sp->core)); 1518 1519 mid->ports_in_mid = kzalloc(alloc_size, GFP_KERNEL); 1520 if (!mid->ports_in_mid) 1521 goto err_ports_in_mid_alloc; 1522 1523 ether_addr_copy(mid->addr, addr); 1524 mid->fid = fid; 1525 mid->in_hw = false; 1526 1527 if (!bridge_device->multicast_enabled) 1528 goto out; 1529 1530 if (!mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, bridge_device)) 1531 goto err_write_mdb_entry; 1532 1533 out: 1534 list_add_tail(&mid->list, &bridge_device->mids_list); 1535 return mid; 1536 1537 err_write_mdb_entry: 1538 kfree(mid->ports_in_mid); 1539 err_ports_in_mid_alloc: 1540 kfree(mid); 1541 return NULL; 1542 } 1543 1544 static int mlxsw_sp_port_remove_from_mid(struct mlxsw_sp_port *mlxsw_sp_port, 1545 struct mlxsw_sp_mid *mid) 1546 { 1547 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1548 int err = 0; 1549 1550 clear_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1551 if (bitmap_empty(mid->ports_in_mid, 1552 mlxsw_core_max_ports(mlxsw_sp->core))) { 1553 err = mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1554 list_del(&mid->list); 1555 kfree(mid->ports_in_mid); 1556 kfree(mid); 1557 } 1558 return err; 1559 } 1560 1561 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port, 1562 const struct switchdev_obj_port_mdb *mdb, 1563 struct switchdev_trans *trans) 1564 { 1565 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1566 struct net_device *orig_dev = mdb->obj.orig_dev; 1567 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1568 struct net_device *dev = mlxsw_sp_port->dev; 1569 struct mlxsw_sp_bridge_device *bridge_device; 1570 struct mlxsw_sp_bridge_port *bridge_port; 1571 struct mlxsw_sp_mid *mid; 1572 u16 fid_index; 1573 int err = 0; 1574 1575 if (switchdev_trans_ph_prepare(trans)) 1576 return 0; 1577 1578 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1579 if (!bridge_port) 1580 return 0; 1581 1582 bridge_device = bridge_port->bridge_device; 1583 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1584 bridge_device, 1585 mdb->vid); 1586 if (!mlxsw_sp_port_vlan) 1587 return 0; 1588 1589 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1590 1591 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1592 if (!mid) { 1593 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, bridge_device, mdb->addr, 1594 fid_index); 1595 if (!mid) { 1596 netdev_err(dev, "Unable to allocate MC group\n"); 1597 return -ENOMEM; 1598 } 1599 } 1600 set_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1601 1602 if (!bridge_device->multicast_enabled) 1603 return 0; 1604 1605 if (bridge_port->mrouter) 1606 return 0; 1607 1608 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true); 1609 if (err) { 1610 netdev_err(dev, "Unable to set SMID\n"); 1611 goto err_out; 1612 } 1613 1614 return 0; 1615 1616 err_out: 1617 mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1618 return err; 1619 } 1620 1621 static void 1622 mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port, 1623 struct mlxsw_sp_bridge_device 1624 *bridge_device) 1625 { 1626 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1627 struct mlxsw_sp_mid *mid; 1628 bool mc_enabled; 1629 1630 mc_enabled = bridge_device->multicast_enabled; 1631 1632 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1633 if (mc_enabled) 1634 mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, 1635 bridge_device); 1636 else 1637 mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1638 } 1639 } 1640 1641 static void 1642 mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port, 1643 struct mlxsw_sp_bridge_port *bridge_port, 1644 bool add) 1645 { 1646 struct mlxsw_sp_bridge_device *bridge_device; 1647 struct mlxsw_sp_mid *mid; 1648 1649 bridge_device = bridge_port->bridge_device; 1650 1651 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1652 if (!test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) 1653 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, add); 1654 } 1655 } 1656 1657 struct mlxsw_sp_span_respin_work { 1658 struct work_struct work; 1659 struct mlxsw_sp *mlxsw_sp; 1660 }; 1661 1662 static void mlxsw_sp_span_respin_work(struct work_struct *work) 1663 { 1664 struct mlxsw_sp_span_respin_work *respin_work = 1665 container_of(work, struct mlxsw_sp_span_respin_work, work); 1666 1667 rtnl_lock(); 1668 mlxsw_sp_span_respin(respin_work->mlxsw_sp); 1669 rtnl_unlock(); 1670 kfree(respin_work); 1671 } 1672 1673 static void mlxsw_sp_span_respin_schedule(struct mlxsw_sp *mlxsw_sp) 1674 { 1675 struct mlxsw_sp_span_respin_work *respin_work; 1676 1677 respin_work = kzalloc(sizeof(*respin_work), GFP_ATOMIC); 1678 if (!respin_work) 1679 return; 1680 1681 INIT_WORK(&respin_work->work, mlxsw_sp_span_respin_work); 1682 respin_work->mlxsw_sp = mlxsw_sp; 1683 1684 mlxsw_core_schedule_work(&respin_work->work); 1685 } 1686 1687 static int mlxsw_sp_port_obj_add(struct net_device *dev, 1688 const struct switchdev_obj *obj, 1689 struct switchdev_trans *trans) 1690 { 1691 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1692 const struct switchdev_obj_port_vlan *vlan; 1693 int err = 0; 1694 1695 switch (obj->id) { 1696 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1697 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); 1698 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, trans); 1699 1700 if (switchdev_trans_ph_prepare(trans)) { 1701 /* The event is emitted before the changes are actually 1702 * applied to the bridge. Therefore schedule the respin 1703 * call for later, so that the respin logic sees the 1704 * updated bridge state. 1705 */ 1706 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1707 } 1708 break; 1709 case SWITCHDEV_OBJ_ID_PORT_MDB: 1710 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port, 1711 SWITCHDEV_OBJ_PORT_MDB(obj), 1712 trans); 1713 break; 1714 default: 1715 err = -EOPNOTSUPP; 1716 break; 1717 } 1718 1719 return err; 1720 } 1721 1722 static void 1723 mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port, 1724 struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 1725 { 1726 u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid; 1727 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1728 1729 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1730 if (WARN_ON(!mlxsw_sp_port_vlan)) 1731 return; 1732 1733 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1734 mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1735 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1736 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1737 } 1738 1739 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 1740 const struct switchdev_obj_port_vlan *vlan) 1741 { 1742 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1743 struct net_device *orig_dev = vlan->obj.orig_dev; 1744 struct mlxsw_sp_bridge_port *bridge_port; 1745 u16 vid; 1746 1747 if (netif_is_bridge_master(orig_dev)) 1748 return -EOPNOTSUPP; 1749 1750 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1751 if (WARN_ON(!bridge_port)) 1752 return -EINVAL; 1753 1754 if (!bridge_port->bridge_device->vlan_enabled) 1755 return 0; 1756 1757 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) 1758 mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid); 1759 1760 return 0; 1761 } 1762 1763 static int 1764 __mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1765 struct mlxsw_sp_bridge_port *bridge_port, 1766 struct mlxsw_sp_mid *mid) 1767 { 1768 struct net_device *dev = mlxsw_sp_port->dev; 1769 int err; 1770 1771 if (bridge_port->bridge_device->multicast_enabled && 1772 !bridge_port->mrouter) { 1773 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1774 if (err) 1775 netdev_err(dev, "Unable to remove port from SMID\n"); 1776 } 1777 1778 err = mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1779 if (err) 1780 netdev_err(dev, "Unable to remove MC SFD\n"); 1781 1782 return err; 1783 } 1784 1785 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1786 const struct switchdev_obj_port_mdb *mdb) 1787 { 1788 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1789 struct net_device *orig_dev = mdb->obj.orig_dev; 1790 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1791 struct mlxsw_sp_bridge_device *bridge_device; 1792 struct net_device *dev = mlxsw_sp_port->dev; 1793 struct mlxsw_sp_bridge_port *bridge_port; 1794 struct mlxsw_sp_mid *mid; 1795 u16 fid_index; 1796 1797 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1798 if (!bridge_port) 1799 return 0; 1800 1801 bridge_device = bridge_port->bridge_device; 1802 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1803 bridge_device, 1804 mdb->vid); 1805 if (!mlxsw_sp_port_vlan) 1806 return 0; 1807 1808 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1809 1810 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1811 if (!mid) { 1812 netdev_err(dev, "Unable to remove port from MC DB\n"); 1813 return -EINVAL; 1814 } 1815 1816 return __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, mid); 1817 } 1818 1819 static void 1820 mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, 1821 struct mlxsw_sp_bridge_port *bridge_port) 1822 { 1823 struct mlxsw_sp_bridge_device *bridge_device; 1824 struct mlxsw_sp_mid *mid, *tmp; 1825 1826 bridge_device = bridge_port->bridge_device; 1827 1828 list_for_each_entry_safe(mid, tmp, &bridge_device->mids_list, list) { 1829 if (test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) { 1830 __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, 1831 mid); 1832 } else if (bridge_device->multicast_enabled && 1833 bridge_port->mrouter) { 1834 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1835 } 1836 } 1837 } 1838 1839 static int mlxsw_sp_port_obj_del(struct net_device *dev, 1840 const struct switchdev_obj *obj) 1841 { 1842 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1843 int err = 0; 1844 1845 switch (obj->id) { 1846 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1847 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port, 1848 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1849 break; 1850 case SWITCHDEV_OBJ_ID_PORT_MDB: 1851 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port, 1852 SWITCHDEV_OBJ_PORT_MDB(obj)); 1853 break; 1854 default: 1855 err = -EOPNOTSUPP; 1856 break; 1857 } 1858 1859 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1860 1861 return err; 1862 } 1863 1864 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, 1865 u16 lag_id) 1866 { 1867 struct mlxsw_sp_port *mlxsw_sp_port; 1868 u64 max_lag_members; 1869 int i; 1870 1871 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1872 MAX_LAG_MEMBERS); 1873 for (i = 0; i < max_lag_members; i++) { 1874 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i); 1875 if (mlxsw_sp_port) 1876 return mlxsw_sp_port; 1877 } 1878 return NULL; 1879 } 1880 1881 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { 1882 .switchdev_port_attr_get = mlxsw_sp_port_attr_get, 1883 .switchdev_port_attr_set = mlxsw_sp_port_attr_set, 1884 .switchdev_port_obj_add = mlxsw_sp_port_obj_add, 1885 .switchdev_port_obj_del = mlxsw_sp_port_obj_del, 1886 }; 1887 1888 static int 1889 mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1890 struct mlxsw_sp_bridge_port *bridge_port, 1891 struct mlxsw_sp_port *mlxsw_sp_port, 1892 struct netlink_ext_ack *extack) 1893 { 1894 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1895 1896 if (is_vlan_dev(bridge_port->dev)) { 1897 NL_SET_ERR_MSG_MOD(extack, "Can not enslave a VLAN device to a VLAN-aware bridge"); 1898 return -EINVAL; 1899 } 1900 1901 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1); 1902 if (WARN_ON(!mlxsw_sp_port_vlan)) 1903 return -EINVAL; 1904 1905 /* Let VLAN-aware bridge take care of its own VLANs */ 1906 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1907 1908 return 0; 1909 } 1910 1911 static void 1912 mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1913 struct mlxsw_sp_bridge_port *bridge_port, 1914 struct mlxsw_sp_port *mlxsw_sp_port) 1915 { 1916 mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1); 1917 /* Make sure untagged frames are allowed to ingress */ 1918 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1); 1919 } 1920 1921 static struct mlxsw_sp_fid * 1922 mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1923 u16 vid) 1924 { 1925 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1926 1927 return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid); 1928 } 1929 1930 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = { 1931 .port_join = mlxsw_sp_bridge_8021q_port_join, 1932 .port_leave = mlxsw_sp_bridge_8021q_port_leave, 1933 .fid_get = mlxsw_sp_bridge_8021q_fid_get, 1934 }; 1935 1936 static bool 1937 mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port, 1938 const struct net_device *br_dev) 1939 { 1940 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1941 1942 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 1943 list) { 1944 if (mlxsw_sp_port_vlan->bridge_port && 1945 mlxsw_sp_port_vlan->bridge_port->bridge_device->dev == 1946 br_dev) 1947 return true; 1948 } 1949 1950 return false; 1951 } 1952 1953 static int 1954 mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1955 struct mlxsw_sp_bridge_port *bridge_port, 1956 struct mlxsw_sp_port *mlxsw_sp_port, 1957 struct netlink_ext_ack *extack) 1958 { 1959 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1960 struct net_device *dev = bridge_port->dev; 1961 u16 vid; 1962 1963 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 1964 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1965 if (WARN_ON(!mlxsw_sp_port_vlan)) 1966 return -EINVAL; 1967 1968 if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) { 1969 NL_SET_ERR_MSG_MOD(extack, "Can not bridge VLAN uppers of the same port"); 1970 return -EINVAL; 1971 } 1972 1973 /* Port is no longer usable as a router interface */ 1974 if (mlxsw_sp_port_vlan->fid) 1975 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 1976 1977 return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1978 } 1979 1980 static void 1981 mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1982 struct mlxsw_sp_bridge_port *bridge_port, 1983 struct mlxsw_sp_port *mlxsw_sp_port) 1984 { 1985 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1986 struct net_device *dev = bridge_port->dev; 1987 u16 vid; 1988 1989 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 1990 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1991 if (WARN_ON(!mlxsw_sp_port_vlan)) 1992 return; 1993 1994 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1995 } 1996 1997 static struct mlxsw_sp_fid * 1998 mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1999 u16 vid) 2000 { 2001 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 2002 2003 return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex); 2004 } 2005 2006 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = { 2007 .port_join = mlxsw_sp_bridge_8021d_port_join, 2008 .port_leave = mlxsw_sp_bridge_8021d_port_leave, 2009 .fid_get = mlxsw_sp_bridge_8021d_fid_get, 2010 }; 2011 2012 int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port, 2013 struct net_device *brport_dev, 2014 struct net_device *br_dev, 2015 struct netlink_ext_ack *extack) 2016 { 2017 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2018 struct mlxsw_sp_bridge_device *bridge_device; 2019 struct mlxsw_sp_bridge_port *bridge_port; 2020 int err; 2021 2022 bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev); 2023 if (IS_ERR(bridge_port)) 2024 return PTR_ERR(bridge_port); 2025 bridge_device = bridge_port->bridge_device; 2026 2027 err = bridge_device->ops->port_join(bridge_device, bridge_port, 2028 mlxsw_sp_port, extack); 2029 if (err) 2030 goto err_port_join; 2031 2032 return 0; 2033 2034 err_port_join: 2035 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2036 return err; 2037 } 2038 2039 void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, 2040 struct net_device *brport_dev, 2041 struct net_device *br_dev) 2042 { 2043 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2044 struct mlxsw_sp_bridge_device *bridge_device; 2045 struct mlxsw_sp_bridge_port *bridge_port; 2046 2047 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); 2048 if (!bridge_device) 2049 return; 2050 bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 2051 if (!bridge_port) 2052 return; 2053 2054 bridge_device->ops->port_leave(bridge_device, bridge_port, 2055 mlxsw_sp_port); 2056 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2057 } 2058 2059 static void 2060 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, 2061 const char *mac, u16 vid, 2062 struct net_device *dev) 2063 { 2064 struct switchdev_notifier_fdb_info info; 2065 2066 info.addr = mac; 2067 info.vid = vid; 2068 call_switchdev_notifiers(type, dev, &info.info); 2069 } 2070 2071 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, 2072 char *sfn_pl, int rec_index, 2073 bool adding) 2074 { 2075 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2076 struct mlxsw_sp_bridge_device *bridge_device; 2077 struct mlxsw_sp_bridge_port *bridge_port; 2078 struct mlxsw_sp_port *mlxsw_sp_port; 2079 enum switchdev_notifier_type type; 2080 char mac[ETH_ALEN]; 2081 u8 local_port; 2082 u16 vid, fid; 2083 bool do_notification = true; 2084 int err; 2085 2086 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port); 2087 mlxsw_sp_port = mlxsw_sp->ports[local_port]; 2088 if (!mlxsw_sp_port) { 2089 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n"); 2090 goto just_remove; 2091 } 2092 2093 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2094 if (!mlxsw_sp_port_vlan) { 2095 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2096 goto just_remove; 2097 } 2098 2099 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2100 if (!bridge_port) { 2101 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2102 goto just_remove; 2103 } 2104 2105 bridge_device = bridge_port->bridge_device; 2106 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2107 2108 do_fdb_op: 2109 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, 2110 adding, true); 2111 if (err) { 2112 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2113 return; 2114 } 2115 2116 if (!do_notification) 2117 return; 2118 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2119 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2120 2121 return; 2122 2123 just_remove: 2124 adding = false; 2125 do_notification = false; 2126 goto do_fdb_op; 2127 } 2128 2129 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, 2130 char *sfn_pl, int rec_index, 2131 bool adding) 2132 { 2133 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2134 struct mlxsw_sp_bridge_device *bridge_device; 2135 struct mlxsw_sp_bridge_port *bridge_port; 2136 struct mlxsw_sp_port *mlxsw_sp_port; 2137 enum switchdev_notifier_type type; 2138 char mac[ETH_ALEN]; 2139 u16 lag_vid = 0; 2140 u16 lag_id; 2141 u16 vid, fid; 2142 bool do_notification = true; 2143 int err; 2144 2145 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id); 2146 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 2147 if (!mlxsw_sp_port) { 2148 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n"); 2149 goto just_remove; 2150 } 2151 2152 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2153 if (!mlxsw_sp_port_vlan) { 2154 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2155 goto just_remove; 2156 } 2157 2158 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2159 if (!bridge_port) { 2160 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2161 goto just_remove; 2162 } 2163 2164 bridge_device = bridge_port->bridge_device; 2165 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2166 lag_vid = mlxsw_sp_port_vlan->vid; 2167 2168 do_fdb_op: 2169 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid, 2170 adding, true); 2171 if (err) { 2172 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2173 return; 2174 } 2175 2176 if (!do_notification) 2177 return; 2178 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2179 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2180 2181 return; 2182 2183 just_remove: 2184 adding = false; 2185 do_notification = false; 2186 goto do_fdb_op; 2187 } 2188 2189 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, 2190 char *sfn_pl, int rec_index) 2191 { 2192 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) { 2193 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC: 2194 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2195 rec_index, true); 2196 break; 2197 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC: 2198 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2199 rec_index, false); 2200 break; 2201 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG: 2202 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2203 rec_index, true); 2204 break; 2205 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG: 2206 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2207 rec_index, false); 2208 break; 2209 } 2210 } 2211 2212 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp) 2213 { 2214 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2215 2216 mlxsw_core_schedule_dw(&bridge->fdb_notify.dw, 2217 msecs_to_jiffies(bridge->fdb_notify.interval)); 2218 } 2219 2220 static void mlxsw_sp_fdb_notify_work(struct work_struct *work) 2221 { 2222 struct mlxsw_sp_bridge *bridge; 2223 struct mlxsw_sp *mlxsw_sp; 2224 char *sfn_pl; 2225 u8 num_rec; 2226 int i; 2227 int err; 2228 2229 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL); 2230 if (!sfn_pl) 2231 return; 2232 2233 bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work); 2234 mlxsw_sp = bridge->mlxsw_sp; 2235 2236 rtnl_lock(); 2237 mlxsw_reg_sfn_pack(sfn_pl); 2238 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); 2239 if (err) { 2240 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n"); 2241 goto out; 2242 } 2243 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl); 2244 for (i = 0; i < num_rec; i++) 2245 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); 2246 2247 out: 2248 rtnl_unlock(); 2249 kfree(sfn_pl); 2250 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2251 } 2252 2253 struct mlxsw_sp_switchdev_event_work { 2254 struct work_struct work; 2255 struct switchdev_notifier_fdb_info fdb_info; 2256 struct net_device *dev; 2257 unsigned long event; 2258 }; 2259 2260 static void mlxsw_sp_switchdev_event_work(struct work_struct *work) 2261 { 2262 struct mlxsw_sp_switchdev_event_work *switchdev_work = 2263 container_of(work, struct mlxsw_sp_switchdev_event_work, work); 2264 struct net_device *dev = switchdev_work->dev; 2265 struct switchdev_notifier_fdb_info *fdb_info; 2266 struct mlxsw_sp_port *mlxsw_sp_port; 2267 int err; 2268 2269 rtnl_lock(); 2270 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev); 2271 if (!mlxsw_sp_port) 2272 goto out; 2273 2274 switch (switchdev_work->event) { 2275 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2276 fdb_info = &switchdev_work->fdb_info; 2277 if (!fdb_info->added_by_user) 2278 break; 2279 err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true); 2280 if (err) 2281 break; 2282 mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, 2283 fdb_info->addr, 2284 fdb_info->vid, dev); 2285 break; 2286 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2287 fdb_info = &switchdev_work->fdb_info; 2288 if (!fdb_info->added_by_user) 2289 break; 2290 mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false); 2291 break; 2292 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2293 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2294 /* These events are only used to potentially update an existing 2295 * SPAN mirror. 2296 */ 2297 break; 2298 } 2299 2300 mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp); 2301 2302 out: 2303 rtnl_unlock(); 2304 kfree(switchdev_work->fdb_info.addr); 2305 kfree(switchdev_work); 2306 dev_put(dev); 2307 } 2308 2309 /* Called under rcu_read_lock() */ 2310 static int mlxsw_sp_switchdev_event(struct notifier_block *unused, 2311 unsigned long event, void *ptr) 2312 { 2313 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2314 struct mlxsw_sp_switchdev_event_work *switchdev_work; 2315 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2316 2317 if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) 2318 return NOTIFY_DONE; 2319 2320 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2321 if (!switchdev_work) 2322 return NOTIFY_BAD; 2323 2324 INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work); 2325 switchdev_work->dev = dev; 2326 switchdev_work->event = event; 2327 2328 switch (event) { 2329 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ 2330 case SWITCHDEV_FDB_DEL_TO_DEVICE: /* fall through */ 2331 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2332 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2333 memcpy(&switchdev_work->fdb_info, ptr, 2334 sizeof(switchdev_work->fdb_info)); 2335 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2336 if (!switchdev_work->fdb_info.addr) 2337 goto err_addr_alloc; 2338 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2339 fdb_info->addr); 2340 /* Take a reference on the device. This can be either 2341 * upper device containig mlxsw_sp_port or just a 2342 * mlxsw_sp_port 2343 */ 2344 dev_hold(dev); 2345 break; 2346 default: 2347 kfree(switchdev_work); 2348 return NOTIFY_DONE; 2349 } 2350 2351 mlxsw_core_schedule_work(&switchdev_work->work); 2352 2353 return NOTIFY_DONE; 2354 2355 err_addr_alloc: 2356 kfree(switchdev_work); 2357 return NOTIFY_BAD; 2358 } 2359 2360 static struct notifier_block mlxsw_sp_switchdev_notifier = { 2361 .notifier_call = mlxsw_sp_switchdev_event, 2362 }; 2363 2364 u8 2365 mlxsw_sp_bridge_port_stp_state(struct mlxsw_sp_bridge_port *bridge_port) 2366 { 2367 return bridge_port->stp_state; 2368 } 2369 2370 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) 2371 { 2372 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2373 int err; 2374 2375 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME); 2376 if (err) { 2377 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); 2378 return err; 2379 } 2380 2381 err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2382 if (err) { 2383 dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n"); 2384 return err; 2385 } 2386 2387 INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work); 2388 bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; 2389 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2390 return 0; 2391 } 2392 2393 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp) 2394 { 2395 cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw); 2396 unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2397 2398 } 2399 2400 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp) 2401 { 2402 struct mlxsw_sp_bridge *bridge; 2403 2404 bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL); 2405 if (!bridge) 2406 return -ENOMEM; 2407 mlxsw_sp->bridge = bridge; 2408 bridge->mlxsw_sp = mlxsw_sp; 2409 2410 INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list); 2411 2412 bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops; 2413 bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops; 2414 2415 return mlxsw_sp_fdb_init(mlxsw_sp); 2416 } 2417 2418 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) 2419 { 2420 mlxsw_sp_fdb_fini(mlxsw_sp); 2421 WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list)); 2422 kfree(mlxsw_sp->bridge); 2423 } 2424 2425 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) 2426 { 2427 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; 2428 } 2429 2430 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) 2431 { 2432 } 2433