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 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1023 return 0; 1024 } 1025 1026 err = mlxsw_sp_port_vlan_fid_join(mlxsw_sp_port_vlan, bridge_port); 1027 if (err) 1028 return err; 1029 1030 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, 1031 bridge_port->flags & BR_LEARNING); 1032 if (err) 1033 goto err_port_vid_learning_set; 1034 1035 err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, 1036 bridge_port->stp_state); 1037 if (err) 1038 goto err_port_vid_stp_set; 1039 1040 bridge_vlan = mlxsw_sp_bridge_vlan_get(bridge_port, vid); 1041 if (!bridge_vlan) { 1042 err = -ENOMEM; 1043 goto err_bridge_vlan_get; 1044 } 1045 1046 list_add(&mlxsw_sp_port_vlan->bridge_vlan_node, 1047 &bridge_vlan->port_vlan_list); 1048 1049 mlxsw_sp_bridge_port_get(mlxsw_sp_port->mlxsw_sp->bridge, 1050 bridge_port->dev); 1051 mlxsw_sp_port_vlan->bridge_port = bridge_port; 1052 1053 return 0; 1054 1055 err_bridge_vlan_get: 1056 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED); 1057 err_port_vid_stp_set: 1058 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 1059 err_port_vid_learning_set: 1060 mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan); 1061 return err; 1062 } 1063 1064 void 1065 mlxsw_sp_port_vlan_bridge_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 1066 { 1067 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 1068 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 1069 struct mlxsw_sp_bridge_vlan *bridge_vlan; 1070 struct mlxsw_sp_bridge_port *bridge_port; 1071 u16 vid = mlxsw_sp_port_vlan->vid; 1072 bool last_port, last_vlan; 1073 1074 if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021Q && 1075 mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021D)) 1076 return; 1077 1078 bridge_port = mlxsw_sp_port_vlan->bridge_port; 1079 last_vlan = list_is_singular(&bridge_port->vlans_list); 1080 bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid); 1081 last_port = list_is_singular(&bridge_vlan->port_vlan_list); 1082 1083 list_del(&mlxsw_sp_port_vlan->bridge_vlan_node); 1084 mlxsw_sp_bridge_vlan_put(bridge_vlan); 1085 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED); 1086 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 1087 if (last_port) 1088 mlxsw_sp_bridge_port_fdb_flush(mlxsw_sp_port->mlxsw_sp, 1089 bridge_port, 1090 mlxsw_sp_fid_index(fid)); 1091 if (last_vlan) 1092 mlxsw_sp_bridge_port_mdb_flush(mlxsw_sp_port, bridge_port); 1093 1094 mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan); 1095 1096 mlxsw_sp_bridge_port_put(mlxsw_sp_port->mlxsw_sp->bridge, bridge_port); 1097 mlxsw_sp_port_vlan->bridge_port = NULL; 1098 } 1099 1100 static int 1101 mlxsw_sp_bridge_port_vlan_add(struct mlxsw_sp_port *mlxsw_sp_port, 1102 struct mlxsw_sp_bridge_port *bridge_port, 1103 u16 vid, bool is_untagged, bool is_pvid) 1104 { 1105 u16 pvid = mlxsw_sp_port_pvid_determine(mlxsw_sp_port, vid, is_pvid); 1106 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1107 u16 old_pvid = mlxsw_sp_port->pvid; 1108 int err; 1109 1110 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid); 1111 if (IS_ERR(mlxsw_sp_port_vlan)) 1112 return PTR_ERR(mlxsw_sp_port_vlan); 1113 1114 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true, 1115 is_untagged); 1116 if (err) 1117 goto err_port_vlan_set; 1118 1119 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1120 if (err) 1121 goto err_port_pvid_set; 1122 1123 err = mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1124 if (err) 1125 goto err_port_vlan_bridge_join; 1126 1127 return 0; 1128 1129 err_port_vlan_bridge_join: 1130 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid); 1131 err_port_pvid_set: 1132 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1133 err_port_vlan_set: 1134 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1135 return err; 1136 } 1137 1138 static int 1139 mlxsw_sp_br_ban_rif_pvid_change(struct mlxsw_sp *mlxsw_sp, 1140 const struct net_device *br_dev, 1141 const struct switchdev_obj_port_vlan *vlan) 1142 { 1143 struct mlxsw_sp_rif *rif; 1144 struct mlxsw_sp_fid *fid; 1145 u16 pvid; 1146 u16 vid; 1147 1148 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, br_dev); 1149 if (!rif) 1150 return 0; 1151 fid = mlxsw_sp_rif_fid(rif); 1152 pvid = mlxsw_sp_fid_8021q_vid(fid); 1153 1154 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { 1155 if (vlan->flags & BRIDGE_VLAN_INFO_PVID) { 1156 if (vid != pvid) { 1157 netdev_err(br_dev, "Can't change PVID, it's used by router interface\n"); 1158 return -EBUSY; 1159 } 1160 } else { 1161 if (vid == pvid) { 1162 netdev_err(br_dev, "Can't remove PVID, it's used by router interface\n"); 1163 return -EBUSY; 1164 } 1165 } 1166 } 1167 1168 return 0; 1169 } 1170 1171 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port, 1172 const struct switchdev_obj_port_vlan *vlan, 1173 struct switchdev_trans *trans) 1174 { 1175 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 1176 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 1177 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1178 struct net_device *orig_dev = vlan->obj.orig_dev; 1179 struct mlxsw_sp_bridge_port *bridge_port; 1180 u16 vid; 1181 1182 if (netif_is_bridge_master(orig_dev)) { 1183 int err = 0; 1184 1185 if ((vlan->flags & BRIDGE_VLAN_INFO_BRENTRY) && 1186 br_vlan_enabled(orig_dev) && 1187 switchdev_trans_ph_prepare(trans)) 1188 err = mlxsw_sp_br_ban_rif_pvid_change(mlxsw_sp, 1189 orig_dev, vlan); 1190 if (!err) 1191 err = -EOPNOTSUPP; 1192 return err; 1193 } 1194 1195 if (switchdev_trans_ph_prepare(trans)) 1196 return 0; 1197 1198 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1199 if (WARN_ON(!bridge_port)) 1200 return -EINVAL; 1201 1202 if (!bridge_port->bridge_device->vlan_enabled) 1203 return 0; 1204 1205 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1206 int err; 1207 1208 err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port, 1209 vid, flag_untagged, 1210 flag_pvid); 1211 if (err) 1212 return err; 1213 } 1214 1215 return 0; 1216 } 1217 1218 static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged) 1219 { 1220 return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID : 1221 MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID; 1222 } 1223 1224 static int 1225 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 1226 struct mlxsw_sp_bridge_port *bridge_port, 1227 u16 fid_index) 1228 { 1229 bool lagged = bridge_port->lagged; 1230 char sfdf_pl[MLXSW_REG_SFDF_LEN]; 1231 u16 system_port; 1232 1233 system_port = lagged ? bridge_port->lag_id : bridge_port->system_port; 1234 mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged)); 1235 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index); 1236 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port); 1237 1238 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); 1239 } 1240 1241 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic) 1242 { 1243 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS : 1244 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY; 1245 } 1246 1247 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding) 1248 { 1249 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT : 1250 MLXSW_REG_SFD_OP_WRITE_REMOVE; 1251 } 1252 1253 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1254 const char *mac, u16 fid, bool adding, 1255 enum mlxsw_reg_sfd_rec_action action, 1256 bool dynamic) 1257 { 1258 char *sfd_pl; 1259 u8 num_rec; 1260 int err; 1261 1262 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1263 if (!sfd_pl) 1264 return -ENOMEM; 1265 1266 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1267 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1268 mac, fid, action, local_port); 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 mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1283 const char *mac, u16 fid, bool adding, 1284 bool dynamic) 1285 { 1286 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding, 1287 MLXSW_REG_SFD_REC_ACTION_NOP, dynamic); 1288 } 1289 1290 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid, 1291 bool adding) 1292 { 1293 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding, 1294 MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER, 1295 false); 1296 } 1297 1298 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id, 1299 const char *mac, u16 fid, u16 lag_vid, 1300 bool adding, bool dynamic) 1301 { 1302 char *sfd_pl; 1303 u8 num_rec; 1304 int err; 1305 1306 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1307 if (!sfd_pl) 1308 return -ENOMEM; 1309 1310 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1311 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1312 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 1313 lag_vid, lag_id); 1314 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1315 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1316 if (err) 1317 goto out; 1318 1319 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1320 err = -EBUSY; 1321 1322 out: 1323 kfree(sfd_pl); 1324 return err; 1325 } 1326 1327 static int 1328 mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port, 1329 struct switchdev_notifier_fdb_info *fdb_info, bool adding) 1330 { 1331 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1332 struct net_device *orig_dev = fdb_info->info.dev; 1333 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1334 struct mlxsw_sp_bridge_device *bridge_device; 1335 struct mlxsw_sp_bridge_port *bridge_port; 1336 u16 fid_index, vid; 1337 1338 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1339 if (!bridge_port) 1340 return -EINVAL; 1341 1342 bridge_device = bridge_port->bridge_device; 1343 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1344 bridge_device, 1345 fdb_info->vid); 1346 if (!mlxsw_sp_port_vlan) 1347 return 0; 1348 1349 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1350 vid = mlxsw_sp_port_vlan->vid; 1351 1352 if (!bridge_port->lagged) 1353 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 1354 bridge_port->system_port, 1355 fdb_info->addr, fid_index, 1356 adding, false); 1357 else 1358 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, 1359 bridge_port->lag_id, 1360 fdb_info->addr, fid_index, 1361 vid, adding, false); 1362 } 1363 1364 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr, 1365 u16 fid, u16 mid_idx, bool adding) 1366 { 1367 char *sfd_pl; 1368 u8 num_rec; 1369 int err; 1370 1371 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1372 if (!sfd_pl) 1373 return -ENOMEM; 1374 1375 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1376 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid, 1377 MLXSW_REG_SFD_REC_ACTION_NOP, mid_idx); 1378 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1379 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1380 if (err) 1381 goto out; 1382 1383 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1384 err = -EBUSY; 1385 1386 out: 1387 kfree(sfd_pl); 1388 return err; 1389 } 1390 1391 static int mlxsw_sp_port_smid_full_entry(struct mlxsw_sp *mlxsw_sp, u16 mid_idx, 1392 long *ports_bitmap, 1393 bool set_router_port) 1394 { 1395 char *smid_pl; 1396 int err, i; 1397 1398 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1399 if (!smid_pl) 1400 return -ENOMEM; 1401 1402 mlxsw_reg_smid_pack(smid_pl, mid_idx, 0, false); 1403 for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++) { 1404 if (mlxsw_sp->ports[i]) 1405 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1); 1406 } 1407 1408 mlxsw_reg_smid_port_mask_set(smid_pl, 1409 mlxsw_sp_router_port(mlxsw_sp), 1); 1410 1411 for_each_set_bit(i, ports_bitmap, mlxsw_core_max_ports(mlxsw_sp->core)) 1412 mlxsw_reg_smid_port_set(smid_pl, i, 1); 1413 1414 mlxsw_reg_smid_port_set(smid_pl, mlxsw_sp_router_port(mlxsw_sp), 1415 set_router_port); 1416 1417 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1418 kfree(smid_pl); 1419 return err; 1420 } 1421 1422 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, 1423 u16 mid_idx, bool add) 1424 { 1425 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1426 char *smid_pl; 1427 int err; 1428 1429 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1430 if (!smid_pl) 1431 return -ENOMEM; 1432 1433 mlxsw_reg_smid_pack(smid_pl, mid_idx, mlxsw_sp_port->local_port, add); 1434 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1435 kfree(smid_pl); 1436 return err; 1437 } 1438 1439 static struct 1440 mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp_bridge_device *bridge_device, 1441 const unsigned char *addr, 1442 u16 fid) 1443 { 1444 struct mlxsw_sp_mid *mid; 1445 1446 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1447 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid) 1448 return mid; 1449 } 1450 return NULL; 1451 } 1452 1453 static void 1454 mlxsw_sp_bridge_port_get_ports_bitmap(struct mlxsw_sp *mlxsw_sp, 1455 struct mlxsw_sp_bridge_port *bridge_port, 1456 unsigned long *ports_bitmap) 1457 { 1458 struct mlxsw_sp_port *mlxsw_sp_port; 1459 u64 max_lag_members, i; 1460 int lag_id; 1461 1462 if (!bridge_port->lagged) { 1463 set_bit(bridge_port->system_port, ports_bitmap); 1464 } else { 1465 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1466 MAX_LAG_MEMBERS); 1467 lag_id = bridge_port->lag_id; 1468 for (i = 0; i < max_lag_members; i++) { 1469 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, 1470 lag_id, i); 1471 if (mlxsw_sp_port) 1472 set_bit(mlxsw_sp_port->local_port, 1473 ports_bitmap); 1474 } 1475 } 1476 } 1477 1478 static void 1479 mlxsw_sp_mc_get_mrouters_bitmap(unsigned long *flood_bitmap, 1480 struct mlxsw_sp_bridge_device *bridge_device, 1481 struct mlxsw_sp *mlxsw_sp) 1482 { 1483 struct mlxsw_sp_bridge_port *bridge_port; 1484 1485 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 1486 if (bridge_port->mrouter) { 1487 mlxsw_sp_bridge_port_get_ports_bitmap(mlxsw_sp, 1488 bridge_port, 1489 flood_bitmap); 1490 } 1491 } 1492 } 1493 1494 static bool 1495 mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1496 struct mlxsw_sp_mid *mid, 1497 struct mlxsw_sp_bridge_device *bridge_device) 1498 { 1499 long *flood_bitmap; 1500 int num_of_ports; 1501 int alloc_size; 1502 u16 mid_idx; 1503 int err; 1504 1505 mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap, 1506 MLXSW_SP_MID_MAX); 1507 if (mid_idx == MLXSW_SP_MID_MAX) 1508 return false; 1509 1510 num_of_ports = mlxsw_core_max_ports(mlxsw_sp->core); 1511 alloc_size = sizeof(long) * BITS_TO_LONGS(num_of_ports); 1512 flood_bitmap = kzalloc(alloc_size, GFP_KERNEL); 1513 if (!flood_bitmap) 1514 return false; 1515 1516 bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports); 1517 mlxsw_sp_mc_get_mrouters_bitmap(flood_bitmap, bridge_device, mlxsw_sp); 1518 1519 mid->mid = mid_idx; 1520 err = mlxsw_sp_port_smid_full_entry(mlxsw_sp, mid_idx, flood_bitmap, 1521 bridge_device->mrouter); 1522 kfree(flood_bitmap); 1523 if (err) 1524 return false; 1525 1526 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid_idx, 1527 true); 1528 if (err) 1529 return false; 1530 1531 set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap); 1532 mid->in_hw = true; 1533 return true; 1534 } 1535 1536 static int mlxsw_sp_mc_remove_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1537 struct mlxsw_sp_mid *mid) 1538 { 1539 if (!mid->in_hw) 1540 return 0; 1541 1542 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap); 1543 mid->in_hw = false; 1544 return mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid->mid, 1545 false); 1546 } 1547 1548 static struct 1549 mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp, 1550 struct mlxsw_sp_bridge_device *bridge_device, 1551 const unsigned char *addr, 1552 u16 fid) 1553 { 1554 struct mlxsw_sp_mid *mid; 1555 size_t alloc_size; 1556 1557 mid = kzalloc(sizeof(*mid), GFP_KERNEL); 1558 if (!mid) 1559 return NULL; 1560 1561 alloc_size = sizeof(unsigned long) * 1562 BITS_TO_LONGS(mlxsw_core_max_ports(mlxsw_sp->core)); 1563 1564 mid->ports_in_mid = kzalloc(alloc_size, GFP_KERNEL); 1565 if (!mid->ports_in_mid) 1566 goto err_ports_in_mid_alloc; 1567 1568 ether_addr_copy(mid->addr, addr); 1569 mid->fid = fid; 1570 mid->in_hw = false; 1571 1572 if (!bridge_device->multicast_enabled) 1573 goto out; 1574 1575 if (!mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, bridge_device)) 1576 goto err_write_mdb_entry; 1577 1578 out: 1579 list_add_tail(&mid->list, &bridge_device->mids_list); 1580 return mid; 1581 1582 err_write_mdb_entry: 1583 kfree(mid->ports_in_mid); 1584 err_ports_in_mid_alloc: 1585 kfree(mid); 1586 return NULL; 1587 } 1588 1589 static int mlxsw_sp_port_remove_from_mid(struct mlxsw_sp_port *mlxsw_sp_port, 1590 struct mlxsw_sp_mid *mid) 1591 { 1592 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1593 int err = 0; 1594 1595 clear_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1596 if (bitmap_empty(mid->ports_in_mid, 1597 mlxsw_core_max_ports(mlxsw_sp->core))) { 1598 err = mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1599 list_del(&mid->list); 1600 kfree(mid->ports_in_mid); 1601 kfree(mid); 1602 } 1603 return err; 1604 } 1605 1606 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port, 1607 const struct switchdev_obj_port_mdb *mdb, 1608 struct switchdev_trans *trans) 1609 { 1610 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1611 struct net_device *orig_dev = mdb->obj.orig_dev; 1612 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1613 struct net_device *dev = mlxsw_sp_port->dev; 1614 struct mlxsw_sp_bridge_device *bridge_device; 1615 struct mlxsw_sp_bridge_port *bridge_port; 1616 struct mlxsw_sp_mid *mid; 1617 u16 fid_index; 1618 int err = 0; 1619 1620 if (switchdev_trans_ph_prepare(trans)) 1621 return 0; 1622 1623 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1624 if (!bridge_port) 1625 return 0; 1626 1627 bridge_device = bridge_port->bridge_device; 1628 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1629 bridge_device, 1630 mdb->vid); 1631 if (!mlxsw_sp_port_vlan) 1632 return 0; 1633 1634 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1635 1636 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1637 if (!mid) { 1638 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, bridge_device, mdb->addr, 1639 fid_index); 1640 if (!mid) { 1641 netdev_err(dev, "Unable to allocate MC group\n"); 1642 return -ENOMEM; 1643 } 1644 } 1645 set_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1646 1647 if (!bridge_device->multicast_enabled) 1648 return 0; 1649 1650 if (bridge_port->mrouter) 1651 return 0; 1652 1653 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true); 1654 if (err) { 1655 netdev_err(dev, "Unable to set SMID\n"); 1656 goto err_out; 1657 } 1658 1659 return 0; 1660 1661 err_out: 1662 mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1663 return err; 1664 } 1665 1666 static void 1667 mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port, 1668 struct mlxsw_sp_bridge_device 1669 *bridge_device) 1670 { 1671 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1672 struct mlxsw_sp_mid *mid; 1673 bool mc_enabled; 1674 1675 mc_enabled = bridge_device->multicast_enabled; 1676 1677 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1678 if (mc_enabled) 1679 mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, 1680 bridge_device); 1681 else 1682 mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1683 } 1684 } 1685 1686 static void 1687 mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port, 1688 struct mlxsw_sp_bridge_port *bridge_port, 1689 bool add) 1690 { 1691 struct mlxsw_sp_bridge_device *bridge_device; 1692 struct mlxsw_sp_mid *mid; 1693 1694 bridge_device = bridge_port->bridge_device; 1695 1696 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1697 if (!test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) 1698 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, add); 1699 } 1700 } 1701 1702 struct mlxsw_sp_span_respin_work { 1703 struct work_struct work; 1704 struct mlxsw_sp *mlxsw_sp; 1705 }; 1706 1707 static void mlxsw_sp_span_respin_work(struct work_struct *work) 1708 { 1709 struct mlxsw_sp_span_respin_work *respin_work = 1710 container_of(work, struct mlxsw_sp_span_respin_work, work); 1711 1712 rtnl_lock(); 1713 mlxsw_sp_span_respin(respin_work->mlxsw_sp); 1714 rtnl_unlock(); 1715 kfree(respin_work); 1716 } 1717 1718 static void mlxsw_sp_span_respin_schedule(struct mlxsw_sp *mlxsw_sp) 1719 { 1720 struct mlxsw_sp_span_respin_work *respin_work; 1721 1722 respin_work = kzalloc(sizeof(*respin_work), GFP_ATOMIC); 1723 if (!respin_work) 1724 return; 1725 1726 INIT_WORK(&respin_work->work, mlxsw_sp_span_respin_work); 1727 respin_work->mlxsw_sp = mlxsw_sp; 1728 1729 mlxsw_core_schedule_work(&respin_work->work); 1730 } 1731 1732 static int mlxsw_sp_port_obj_add(struct net_device *dev, 1733 const struct switchdev_obj *obj, 1734 struct switchdev_trans *trans) 1735 { 1736 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1737 const struct switchdev_obj_port_vlan *vlan; 1738 int err = 0; 1739 1740 switch (obj->id) { 1741 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1742 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); 1743 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, trans); 1744 1745 if (switchdev_trans_ph_prepare(trans)) { 1746 /* The event is emitted before the changes are actually 1747 * applied to the bridge. Therefore schedule the respin 1748 * call for later, so that the respin logic sees the 1749 * updated bridge state. 1750 */ 1751 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1752 } 1753 break; 1754 case SWITCHDEV_OBJ_ID_PORT_MDB: 1755 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port, 1756 SWITCHDEV_OBJ_PORT_MDB(obj), 1757 trans); 1758 break; 1759 default: 1760 err = -EOPNOTSUPP; 1761 break; 1762 } 1763 1764 return err; 1765 } 1766 1767 static void 1768 mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port, 1769 struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 1770 { 1771 u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid; 1772 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1773 1774 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1775 if (WARN_ON(!mlxsw_sp_port_vlan)) 1776 return; 1777 1778 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1779 mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1780 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1781 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1782 } 1783 1784 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 1785 const struct switchdev_obj_port_vlan *vlan) 1786 { 1787 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1788 struct net_device *orig_dev = vlan->obj.orig_dev; 1789 struct mlxsw_sp_bridge_port *bridge_port; 1790 u16 vid; 1791 1792 if (netif_is_bridge_master(orig_dev)) 1793 return -EOPNOTSUPP; 1794 1795 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1796 if (WARN_ON(!bridge_port)) 1797 return -EINVAL; 1798 1799 if (!bridge_port->bridge_device->vlan_enabled) 1800 return 0; 1801 1802 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) 1803 mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid); 1804 1805 return 0; 1806 } 1807 1808 static int 1809 __mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1810 struct mlxsw_sp_bridge_port *bridge_port, 1811 struct mlxsw_sp_mid *mid) 1812 { 1813 struct net_device *dev = mlxsw_sp_port->dev; 1814 int err; 1815 1816 if (bridge_port->bridge_device->multicast_enabled && 1817 !bridge_port->mrouter) { 1818 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1819 if (err) 1820 netdev_err(dev, "Unable to remove port from SMID\n"); 1821 } 1822 1823 err = mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1824 if (err) 1825 netdev_err(dev, "Unable to remove MC SFD\n"); 1826 1827 return err; 1828 } 1829 1830 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1831 const struct switchdev_obj_port_mdb *mdb) 1832 { 1833 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1834 struct net_device *orig_dev = mdb->obj.orig_dev; 1835 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1836 struct mlxsw_sp_bridge_device *bridge_device; 1837 struct net_device *dev = mlxsw_sp_port->dev; 1838 struct mlxsw_sp_bridge_port *bridge_port; 1839 struct mlxsw_sp_mid *mid; 1840 u16 fid_index; 1841 1842 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1843 if (!bridge_port) 1844 return 0; 1845 1846 bridge_device = bridge_port->bridge_device; 1847 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1848 bridge_device, 1849 mdb->vid); 1850 if (!mlxsw_sp_port_vlan) 1851 return 0; 1852 1853 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1854 1855 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1856 if (!mid) { 1857 netdev_err(dev, "Unable to remove port from MC DB\n"); 1858 return -EINVAL; 1859 } 1860 1861 return __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, mid); 1862 } 1863 1864 static void 1865 mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, 1866 struct mlxsw_sp_bridge_port *bridge_port) 1867 { 1868 struct mlxsw_sp_bridge_device *bridge_device; 1869 struct mlxsw_sp_mid *mid, *tmp; 1870 1871 bridge_device = bridge_port->bridge_device; 1872 1873 list_for_each_entry_safe(mid, tmp, &bridge_device->mids_list, list) { 1874 if (test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) { 1875 __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, 1876 mid); 1877 } else if (bridge_device->multicast_enabled && 1878 bridge_port->mrouter) { 1879 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1880 } 1881 } 1882 } 1883 1884 static int mlxsw_sp_port_obj_del(struct net_device *dev, 1885 const struct switchdev_obj *obj) 1886 { 1887 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1888 int err = 0; 1889 1890 switch (obj->id) { 1891 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1892 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port, 1893 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1894 break; 1895 case SWITCHDEV_OBJ_ID_PORT_MDB: 1896 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port, 1897 SWITCHDEV_OBJ_PORT_MDB(obj)); 1898 break; 1899 default: 1900 err = -EOPNOTSUPP; 1901 break; 1902 } 1903 1904 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1905 1906 return err; 1907 } 1908 1909 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, 1910 u16 lag_id) 1911 { 1912 struct mlxsw_sp_port *mlxsw_sp_port; 1913 u64 max_lag_members; 1914 int i; 1915 1916 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1917 MAX_LAG_MEMBERS); 1918 for (i = 0; i < max_lag_members; i++) { 1919 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i); 1920 if (mlxsw_sp_port) 1921 return mlxsw_sp_port; 1922 } 1923 return NULL; 1924 } 1925 1926 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { 1927 .switchdev_port_attr_get = mlxsw_sp_port_attr_get, 1928 .switchdev_port_attr_set = mlxsw_sp_port_attr_set, 1929 .switchdev_port_obj_add = mlxsw_sp_port_obj_add, 1930 .switchdev_port_obj_del = mlxsw_sp_port_obj_del, 1931 }; 1932 1933 static int 1934 mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1935 struct mlxsw_sp_bridge_port *bridge_port, 1936 struct mlxsw_sp_port *mlxsw_sp_port, 1937 struct netlink_ext_ack *extack) 1938 { 1939 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1940 1941 if (is_vlan_dev(bridge_port->dev)) { 1942 NL_SET_ERR_MSG_MOD(extack, "Can not enslave a VLAN device to a VLAN-aware bridge"); 1943 return -EINVAL; 1944 } 1945 1946 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1); 1947 if (WARN_ON(!mlxsw_sp_port_vlan)) 1948 return -EINVAL; 1949 1950 /* Let VLAN-aware bridge take care of its own VLANs */ 1951 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1952 1953 return 0; 1954 } 1955 1956 static void 1957 mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1958 struct mlxsw_sp_bridge_port *bridge_port, 1959 struct mlxsw_sp_port *mlxsw_sp_port) 1960 { 1961 mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1); 1962 /* Make sure untagged frames are allowed to ingress */ 1963 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1); 1964 } 1965 1966 static struct mlxsw_sp_fid * 1967 mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1968 u16 vid) 1969 { 1970 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1971 1972 return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid); 1973 } 1974 1975 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = { 1976 .port_join = mlxsw_sp_bridge_8021q_port_join, 1977 .port_leave = mlxsw_sp_bridge_8021q_port_leave, 1978 .fid_get = mlxsw_sp_bridge_8021q_fid_get, 1979 }; 1980 1981 static bool 1982 mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port, 1983 const struct net_device *br_dev) 1984 { 1985 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1986 1987 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 1988 list) { 1989 if (mlxsw_sp_port_vlan->bridge_port && 1990 mlxsw_sp_port_vlan->bridge_port->bridge_device->dev == 1991 br_dev) 1992 return true; 1993 } 1994 1995 return false; 1996 } 1997 1998 static int 1999 mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device, 2000 struct mlxsw_sp_bridge_port *bridge_port, 2001 struct mlxsw_sp_port *mlxsw_sp_port, 2002 struct netlink_ext_ack *extack) 2003 { 2004 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2005 struct net_device *dev = bridge_port->dev; 2006 u16 vid; 2007 2008 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 2009 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 2010 if (WARN_ON(!mlxsw_sp_port_vlan)) 2011 return -EINVAL; 2012 2013 if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) { 2014 NL_SET_ERR_MSG_MOD(extack, "Can not bridge VLAN uppers of the same port"); 2015 return -EINVAL; 2016 } 2017 2018 /* Port is no longer usable as a router interface */ 2019 if (mlxsw_sp_port_vlan->fid) 2020 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 2021 2022 return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 2023 } 2024 2025 static void 2026 mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 2027 struct mlxsw_sp_bridge_port *bridge_port, 2028 struct mlxsw_sp_port *mlxsw_sp_port) 2029 { 2030 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2031 struct net_device *dev = bridge_port->dev; 2032 u16 vid; 2033 2034 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 2035 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 2036 if (WARN_ON(!mlxsw_sp_port_vlan)) 2037 return; 2038 2039 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 2040 } 2041 2042 static struct mlxsw_sp_fid * 2043 mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 2044 u16 vid) 2045 { 2046 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 2047 2048 return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex); 2049 } 2050 2051 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = { 2052 .port_join = mlxsw_sp_bridge_8021d_port_join, 2053 .port_leave = mlxsw_sp_bridge_8021d_port_leave, 2054 .fid_get = mlxsw_sp_bridge_8021d_fid_get, 2055 }; 2056 2057 int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port, 2058 struct net_device *brport_dev, 2059 struct net_device *br_dev, 2060 struct netlink_ext_ack *extack) 2061 { 2062 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2063 struct mlxsw_sp_bridge_device *bridge_device; 2064 struct mlxsw_sp_bridge_port *bridge_port; 2065 int err; 2066 2067 bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev); 2068 if (IS_ERR(bridge_port)) 2069 return PTR_ERR(bridge_port); 2070 bridge_device = bridge_port->bridge_device; 2071 2072 err = bridge_device->ops->port_join(bridge_device, bridge_port, 2073 mlxsw_sp_port, extack); 2074 if (err) 2075 goto err_port_join; 2076 2077 return 0; 2078 2079 err_port_join: 2080 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2081 return err; 2082 } 2083 2084 void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, 2085 struct net_device *brport_dev, 2086 struct net_device *br_dev) 2087 { 2088 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2089 struct mlxsw_sp_bridge_device *bridge_device; 2090 struct mlxsw_sp_bridge_port *bridge_port; 2091 2092 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); 2093 if (!bridge_device) 2094 return; 2095 bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 2096 if (!bridge_port) 2097 return; 2098 2099 bridge_device->ops->port_leave(bridge_device, bridge_port, 2100 mlxsw_sp_port); 2101 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2102 } 2103 2104 static void 2105 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, 2106 const char *mac, u16 vid, 2107 struct net_device *dev) 2108 { 2109 struct switchdev_notifier_fdb_info info; 2110 2111 info.addr = mac; 2112 info.vid = vid; 2113 call_switchdev_notifiers(type, dev, &info.info); 2114 } 2115 2116 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, 2117 char *sfn_pl, int rec_index, 2118 bool adding) 2119 { 2120 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2121 struct mlxsw_sp_bridge_device *bridge_device; 2122 struct mlxsw_sp_bridge_port *bridge_port; 2123 struct mlxsw_sp_port *mlxsw_sp_port; 2124 enum switchdev_notifier_type type; 2125 char mac[ETH_ALEN]; 2126 u8 local_port; 2127 u16 vid, fid; 2128 bool do_notification = true; 2129 int err; 2130 2131 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port); 2132 mlxsw_sp_port = mlxsw_sp->ports[local_port]; 2133 if (!mlxsw_sp_port) { 2134 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n"); 2135 goto just_remove; 2136 } 2137 2138 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2139 if (!mlxsw_sp_port_vlan) { 2140 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2141 goto just_remove; 2142 } 2143 2144 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2145 if (!bridge_port) { 2146 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2147 goto just_remove; 2148 } 2149 2150 bridge_device = bridge_port->bridge_device; 2151 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2152 2153 do_fdb_op: 2154 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, 2155 adding, true); 2156 if (err) { 2157 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2158 return; 2159 } 2160 2161 if (!do_notification) 2162 return; 2163 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2164 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2165 2166 return; 2167 2168 just_remove: 2169 adding = false; 2170 do_notification = false; 2171 goto do_fdb_op; 2172 } 2173 2174 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, 2175 char *sfn_pl, int rec_index, 2176 bool adding) 2177 { 2178 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2179 struct mlxsw_sp_bridge_device *bridge_device; 2180 struct mlxsw_sp_bridge_port *bridge_port; 2181 struct mlxsw_sp_port *mlxsw_sp_port; 2182 enum switchdev_notifier_type type; 2183 char mac[ETH_ALEN]; 2184 u16 lag_vid = 0; 2185 u16 lag_id; 2186 u16 vid, fid; 2187 bool do_notification = true; 2188 int err; 2189 2190 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id); 2191 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 2192 if (!mlxsw_sp_port) { 2193 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n"); 2194 goto just_remove; 2195 } 2196 2197 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2198 if (!mlxsw_sp_port_vlan) { 2199 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2200 goto just_remove; 2201 } 2202 2203 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2204 if (!bridge_port) { 2205 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2206 goto just_remove; 2207 } 2208 2209 bridge_device = bridge_port->bridge_device; 2210 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2211 lag_vid = mlxsw_sp_port_vlan->vid; 2212 2213 do_fdb_op: 2214 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid, 2215 adding, true); 2216 if (err) { 2217 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2218 return; 2219 } 2220 2221 if (!do_notification) 2222 return; 2223 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2224 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2225 2226 return; 2227 2228 just_remove: 2229 adding = false; 2230 do_notification = false; 2231 goto do_fdb_op; 2232 } 2233 2234 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, 2235 char *sfn_pl, int rec_index) 2236 { 2237 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) { 2238 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC: 2239 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2240 rec_index, true); 2241 break; 2242 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC: 2243 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2244 rec_index, false); 2245 break; 2246 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG: 2247 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2248 rec_index, true); 2249 break; 2250 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG: 2251 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2252 rec_index, false); 2253 break; 2254 } 2255 } 2256 2257 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp) 2258 { 2259 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2260 2261 mlxsw_core_schedule_dw(&bridge->fdb_notify.dw, 2262 msecs_to_jiffies(bridge->fdb_notify.interval)); 2263 } 2264 2265 static void mlxsw_sp_fdb_notify_work(struct work_struct *work) 2266 { 2267 struct mlxsw_sp_bridge *bridge; 2268 struct mlxsw_sp *mlxsw_sp; 2269 char *sfn_pl; 2270 u8 num_rec; 2271 int i; 2272 int err; 2273 2274 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL); 2275 if (!sfn_pl) 2276 return; 2277 2278 bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work); 2279 mlxsw_sp = bridge->mlxsw_sp; 2280 2281 rtnl_lock(); 2282 mlxsw_reg_sfn_pack(sfn_pl); 2283 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); 2284 if (err) { 2285 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n"); 2286 goto out; 2287 } 2288 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl); 2289 for (i = 0; i < num_rec; i++) 2290 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); 2291 2292 out: 2293 rtnl_unlock(); 2294 kfree(sfn_pl); 2295 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2296 } 2297 2298 struct mlxsw_sp_switchdev_event_work { 2299 struct work_struct work; 2300 struct switchdev_notifier_fdb_info fdb_info; 2301 struct net_device *dev; 2302 unsigned long event; 2303 }; 2304 2305 static void mlxsw_sp_switchdev_event_work(struct work_struct *work) 2306 { 2307 struct mlxsw_sp_switchdev_event_work *switchdev_work = 2308 container_of(work, struct mlxsw_sp_switchdev_event_work, work); 2309 struct net_device *dev = switchdev_work->dev; 2310 struct switchdev_notifier_fdb_info *fdb_info; 2311 struct mlxsw_sp_port *mlxsw_sp_port; 2312 int err; 2313 2314 rtnl_lock(); 2315 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev); 2316 if (!mlxsw_sp_port) 2317 goto out; 2318 2319 switch (switchdev_work->event) { 2320 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2321 fdb_info = &switchdev_work->fdb_info; 2322 if (!fdb_info->added_by_user) 2323 break; 2324 err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true); 2325 if (err) 2326 break; 2327 mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, 2328 fdb_info->addr, 2329 fdb_info->vid, dev); 2330 break; 2331 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2332 fdb_info = &switchdev_work->fdb_info; 2333 if (!fdb_info->added_by_user) 2334 break; 2335 mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false); 2336 break; 2337 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2338 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2339 /* These events are only used to potentially update an existing 2340 * SPAN mirror. 2341 */ 2342 break; 2343 } 2344 2345 mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp); 2346 2347 out: 2348 rtnl_unlock(); 2349 kfree(switchdev_work->fdb_info.addr); 2350 kfree(switchdev_work); 2351 dev_put(dev); 2352 } 2353 2354 /* Called under rcu_read_lock() */ 2355 static int mlxsw_sp_switchdev_event(struct notifier_block *unused, 2356 unsigned long event, void *ptr) 2357 { 2358 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2359 struct mlxsw_sp_switchdev_event_work *switchdev_work; 2360 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2361 2362 if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) 2363 return NOTIFY_DONE; 2364 2365 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2366 if (!switchdev_work) 2367 return NOTIFY_BAD; 2368 2369 INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work); 2370 switchdev_work->dev = dev; 2371 switchdev_work->event = event; 2372 2373 switch (event) { 2374 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ 2375 case SWITCHDEV_FDB_DEL_TO_DEVICE: /* fall through */ 2376 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2377 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2378 memcpy(&switchdev_work->fdb_info, ptr, 2379 sizeof(switchdev_work->fdb_info)); 2380 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2381 if (!switchdev_work->fdb_info.addr) 2382 goto err_addr_alloc; 2383 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2384 fdb_info->addr); 2385 /* Take a reference on the device. This can be either 2386 * upper device containig mlxsw_sp_port or just a 2387 * mlxsw_sp_port 2388 */ 2389 dev_hold(dev); 2390 break; 2391 default: 2392 kfree(switchdev_work); 2393 return NOTIFY_DONE; 2394 } 2395 2396 mlxsw_core_schedule_work(&switchdev_work->work); 2397 2398 return NOTIFY_DONE; 2399 2400 err_addr_alloc: 2401 kfree(switchdev_work); 2402 return NOTIFY_BAD; 2403 } 2404 2405 static struct notifier_block mlxsw_sp_switchdev_notifier = { 2406 .notifier_call = mlxsw_sp_switchdev_event, 2407 }; 2408 2409 u8 2410 mlxsw_sp_bridge_port_stp_state(struct mlxsw_sp_bridge_port *bridge_port) 2411 { 2412 return bridge_port->stp_state; 2413 } 2414 2415 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) 2416 { 2417 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2418 int err; 2419 2420 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME); 2421 if (err) { 2422 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); 2423 return err; 2424 } 2425 2426 err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2427 if (err) { 2428 dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n"); 2429 return err; 2430 } 2431 2432 INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work); 2433 bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; 2434 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2435 return 0; 2436 } 2437 2438 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp) 2439 { 2440 cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw); 2441 unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2442 2443 } 2444 2445 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp) 2446 { 2447 struct mlxsw_sp_bridge *bridge; 2448 2449 bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL); 2450 if (!bridge) 2451 return -ENOMEM; 2452 mlxsw_sp->bridge = bridge; 2453 bridge->mlxsw_sp = mlxsw_sp; 2454 2455 INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list); 2456 2457 bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops; 2458 bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops; 2459 2460 return mlxsw_sp_fdb_init(mlxsw_sp); 2461 } 2462 2463 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) 2464 { 2465 mlxsw_sp_fdb_fini(mlxsw_sp); 2466 WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list)); 2467 kfree(mlxsw_sp->bridge); 2468 } 2469 2470 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) 2471 { 2472 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; 2473 } 2474 2475 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) 2476 { 2477 } 2478