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 mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port, 1139 const struct switchdev_obj_port_vlan *vlan, 1140 struct switchdev_trans *trans) 1141 { 1142 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 1143 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 1144 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1145 struct net_device *orig_dev = vlan->obj.orig_dev; 1146 struct mlxsw_sp_bridge_port *bridge_port; 1147 u16 vid; 1148 1149 if (netif_is_bridge_master(orig_dev)) 1150 return -EOPNOTSUPP; 1151 1152 if (switchdev_trans_ph_prepare(trans)) 1153 return 0; 1154 1155 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1156 if (WARN_ON(!bridge_port)) 1157 return -EINVAL; 1158 1159 if (!bridge_port->bridge_device->vlan_enabled) 1160 return 0; 1161 1162 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1163 int err; 1164 1165 err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port, 1166 vid, flag_untagged, 1167 flag_pvid); 1168 if (err) 1169 return err; 1170 } 1171 1172 return 0; 1173 } 1174 1175 static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged) 1176 { 1177 return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID : 1178 MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID; 1179 } 1180 1181 static int 1182 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 1183 struct mlxsw_sp_bridge_port *bridge_port, 1184 u16 fid_index) 1185 { 1186 bool lagged = bridge_port->lagged; 1187 char sfdf_pl[MLXSW_REG_SFDF_LEN]; 1188 u16 system_port; 1189 1190 system_port = lagged ? bridge_port->lag_id : bridge_port->system_port; 1191 mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged)); 1192 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index); 1193 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port); 1194 1195 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); 1196 } 1197 1198 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic) 1199 { 1200 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS : 1201 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY; 1202 } 1203 1204 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding) 1205 { 1206 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT : 1207 MLXSW_REG_SFD_OP_WRITE_REMOVE; 1208 } 1209 1210 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1211 const char *mac, u16 fid, bool adding, 1212 enum mlxsw_reg_sfd_rec_action action, 1213 bool dynamic) 1214 { 1215 char *sfd_pl; 1216 u8 num_rec; 1217 int err; 1218 1219 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1220 if (!sfd_pl) 1221 return -ENOMEM; 1222 1223 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1224 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1225 mac, fid, action, local_port); 1226 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1227 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1228 if (err) 1229 goto out; 1230 1231 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1232 err = -EBUSY; 1233 1234 out: 1235 kfree(sfd_pl); 1236 return err; 1237 } 1238 1239 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1240 const char *mac, u16 fid, bool adding, 1241 bool dynamic) 1242 { 1243 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding, 1244 MLXSW_REG_SFD_REC_ACTION_NOP, dynamic); 1245 } 1246 1247 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid, 1248 bool adding) 1249 { 1250 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding, 1251 MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER, 1252 false); 1253 } 1254 1255 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id, 1256 const char *mac, u16 fid, u16 lag_vid, 1257 bool adding, bool dynamic) 1258 { 1259 char *sfd_pl; 1260 u8 num_rec; 1261 int err; 1262 1263 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1264 if (!sfd_pl) 1265 return -ENOMEM; 1266 1267 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1268 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1269 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 1270 lag_vid, lag_id); 1271 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1272 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1273 if (err) 1274 goto out; 1275 1276 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1277 err = -EBUSY; 1278 1279 out: 1280 kfree(sfd_pl); 1281 return err; 1282 } 1283 1284 static int 1285 mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port, 1286 struct switchdev_notifier_fdb_info *fdb_info, bool adding) 1287 { 1288 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1289 struct net_device *orig_dev = fdb_info->info.dev; 1290 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1291 struct mlxsw_sp_bridge_device *bridge_device; 1292 struct mlxsw_sp_bridge_port *bridge_port; 1293 u16 fid_index, vid; 1294 1295 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1296 if (!bridge_port) 1297 return -EINVAL; 1298 1299 bridge_device = bridge_port->bridge_device; 1300 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1301 bridge_device, 1302 fdb_info->vid); 1303 if (!mlxsw_sp_port_vlan) 1304 return 0; 1305 1306 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1307 vid = mlxsw_sp_port_vlan->vid; 1308 1309 if (!bridge_port->lagged) 1310 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 1311 bridge_port->system_port, 1312 fdb_info->addr, fid_index, 1313 adding, false); 1314 else 1315 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, 1316 bridge_port->lag_id, 1317 fdb_info->addr, fid_index, 1318 vid, adding, false); 1319 } 1320 1321 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr, 1322 u16 fid, u16 mid_idx, bool adding) 1323 { 1324 char *sfd_pl; 1325 u8 num_rec; 1326 int err; 1327 1328 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1329 if (!sfd_pl) 1330 return -ENOMEM; 1331 1332 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1333 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid, 1334 MLXSW_REG_SFD_REC_ACTION_NOP, mid_idx); 1335 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl); 1336 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1337 if (err) 1338 goto out; 1339 1340 if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl)) 1341 err = -EBUSY; 1342 1343 out: 1344 kfree(sfd_pl); 1345 return err; 1346 } 1347 1348 static int mlxsw_sp_port_smid_full_entry(struct mlxsw_sp *mlxsw_sp, u16 mid_idx, 1349 long *ports_bitmap, 1350 bool set_router_port) 1351 { 1352 char *smid_pl; 1353 int err, i; 1354 1355 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1356 if (!smid_pl) 1357 return -ENOMEM; 1358 1359 mlxsw_reg_smid_pack(smid_pl, mid_idx, 0, false); 1360 for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++) { 1361 if (mlxsw_sp->ports[i]) 1362 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1); 1363 } 1364 1365 mlxsw_reg_smid_port_mask_set(smid_pl, 1366 mlxsw_sp_router_port(mlxsw_sp), 1); 1367 1368 for_each_set_bit(i, ports_bitmap, mlxsw_core_max_ports(mlxsw_sp->core)) 1369 mlxsw_reg_smid_port_set(smid_pl, i, 1); 1370 1371 mlxsw_reg_smid_port_set(smid_pl, mlxsw_sp_router_port(mlxsw_sp), 1372 set_router_port); 1373 1374 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1375 kfree(smid_pl); 1376 return err; 1377 } 1378 1379 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, 1380 u16 mid_idx, bool add) 1381 { 1382 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1383 char *smid_pl; 1384 int err; 1385 1386 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1387 if (!smid_pl) 1388 return -ENOMEM; 1389 1390 mlxsw_reg_smid_pack(smid_pl, mid_idx, mlxsw_sp_port->local_port, add); 1391 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1392 kfree(smid_pl); 1393 return err; 1394 } 1395 1396 static struct 1397 mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp_bridge_device *bridge_device, 1398 const unsigned char *addr, 1399 u16 fid) 1400 { 1401 struct mlxsw_sp_mid *mid; 1402 1403 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1404 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid) 1405 return mid; 1406 } 1407 return NULL; 1408 } 1409 1410 static void 1411 mlxsw_sp_bridge_port_get_ports_bitmap(struct mlxsw_sp *mlxsw_sp, 1412 struct mlxsw_sp_bridge_port *bridge_port, 1413 unsigned long *ports_bitmap) 1414 { 1415 struct mlxsw_sp_port *mlxsw_sp_port; 1416 u64 max_lag_members, i; 1417 int lag_id; 1418 1419 if (!bridge_port->lagged) { 1420 set_bit(bridge_port->system_port, ports_bitmap); 1421 } else { 1422 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1423 MAX_LAG_MEMBERS); 1424 lag_id = bridge_port->lag_id; 1425 for (i = 0; i < max_lag_members; i++) { 1426 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, 1427 lag_id, i); 1428 if (mlxsw_sp_port) 1429 set_bit(mlxsw_sp_port->local_port, 1430 ports_bitmap); 1431 } 1432 } 1433 } 1434 1435 static void 1436 mlxsw_sp_mc_get_mrouters_bitmap(unsigned long *flood_bitmap, 1437 struct mlxsw_sp_bridge_device *bridge_device, 1438 struct mlxsw_sp *mlxsw_sp) 1439 { 1440 struct mlxsw_sp_bridge_port *bridge_port; 1441 1442 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 1443 if (bridge_port->mrouter) { 1444 mlxsw_sp_bridge_port_get_ports_bitmap(mlxsw_sp, 1445 bridge_port, 1446 flood_bitmap); 1447 } 1448 } 1449 } 1450 1451 static bool 1452 mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1453 struct mlxsw_sp_mid *mid, 1454 struct mlxsw_sp_bridge_device *bridge_device) 1455 { 1456 long *flood_bitmap; 1457 int num_of_ports; 1458 int alloc_size; 1459 u16 mid_idx; 1460 int err; 1461 1462 mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap, 1463 MLXSW_SP_MID_MAX); 1464 if (mid_idx == MLXSW_SP_MID_MAX) 1465 return false; 1466 1467 num_of_ports = mlxsw_core_max_ports(mlxsw_sp->core); 1468 alloc_size = sizeof(long) * BITS_TO_LONGS(num_of_ports); 1469 flood_bitmap = kzalloc(alloc_size, GFP_KERNEL); 1470 if (!flood_bitmap) 1471 return false; 1472 1473 bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports); 1474 mlxsw_sp_mc_get_mrouters_bitmap(flood_bitmap, bridge_device, mlxsw_sp); 1475 1476 mid->mid = mid_idx; 1477 err = mlxsw_sp_port_smid_full_entry(mlxsw_sp, mid_idx, flood_bitmap, 1478 bridge_device->mrouter); 1479 kfree(flood_bitmap); 1480 if (err) 1481 return false; 1482 1483 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid_idx, 1484 true); 1485 if (err) 1486 return false; 1487 1488 set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap); 1489 mid->in_hw = true; 1490 return true; 1491 } 1492 1493 static int mlxsw_sp_mc_remove_mdb_entry(struct mlxsw_sp *mlxsw_sp, 1494 struct mlxsw_sp_mid *mid) 1495 { 1496 if (!mid->in_hw) 1497 return 0; 1498 1499 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap); 1500 mid->in_hw = false; 1501 return mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid->mid, 1502 false); 1503 } 1504 1505 static struct 1506 mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp, 1507 struct mlxsw_sp_bridge_device *bridge_device, 1508 const unsigned char *addr, 1509 u16 fid) 1510 { 1511 struct mlxsw_sp_mid *mid; 1512 size_t alloc_size; 1513 1514 mid = kzalloc(sizeof(*mid), GFP_KERNEL); 1515 if (!mid) 1516 return NULL; 1517 1518 alloc_size = sizeof(unsigned long) * 1519 BITS_TO_LONGS(mlxsw_core_max_ports(mlxsw_sp->core)); 1520 1521 mid->ports_in_mid = kzalloc(alloc_size, GFP_KERNEL); 1522 if (!mid->ports_in_mid) 1523 goto err_ports_in_mid_alloc; 1524 1525 ether_addr_copy(mid->addr, addr); 1526 mid->fid = fid; 1527 mid->in_hw = false; 1528 1529 if (!bridge_device->multicast_enabled) 1530 goto out; 1531 1532 if (!mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, bridge_device)) 1533 goto err_write_mdb_entry; 1534 1535 out: 1536 list_add_tail(&mid->list, &bridge_device->mids_list); 1537 return mid; 1538 1539 err_write_mdb_entry: 1540 kfree(mid->ports_in_mid); 1541 err_ports_in_mid_alloc: 1542 kfree(mid); 1543 return NULL; 1544 } 1545 1546 static int mlxsw_sp_port_remove_from_mid(struct mlxsw_sp_port *mlxsw_sp_port, 1547 struct mlxsw_sp_mid *mid) 1548 { 1549 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1550 int err = 0; 1551 1552 clear_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1553 if (bitmap_empty(mid->ports_in_mid, 1554 mlxsw_core_max_ports(mlxsw_sp->core))) { 1555 err = mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1556 list_del(&mid->list); 1557 kfree(mid->ports_in_mid); 1558 kfree(mid); 1559 } 1560 return err; 1561 } 1562 1563 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port, 1564 const struct switchdev_obj_port_mdb *mdb, 1565 struct switchdev_trans *trans) 1566 { 1567 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1568 struct net_device *orig_dev = mdb->obj.orig_dev; 1569 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1570 struct net_device *dev = mlxsw_sp_port->dev; 1571 struct mlxsw_sp_bridge_device *bridge_device; 1572 struct mlxsw_sp_bridge_port *bridge_port; 1573 struct mlxsw_sp_mid *mid; 1574 u16 fid_index; 1575 int err = 0; 1576 1577 if (switchdev_trans_ph_prepare(trans)) 1578 return 0; 1579 1580 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1581 if (!bridge_port) 1582 return 0; 1583 1584 bridge_device = bridge_port->bridge_device; 1585 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1586 bridge_device, 1587 mdb->vid); 1588 if (!mlxsw_sp_port_vlan) 1589 return 0; 1590 1591 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1592 1593 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1594 if (!mid) { 1595 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, bridge_device, mdb->addr, 1596 fid_index); 1597 if (!mid) { 1598 netdev_err(dev, "Unable to allocate MC group\n"); 1599 return -ENOMEM; 1600 } 1601 } 1602 set_bit(mlxsw_sp_port->local_port, mid->ports_in_mid); 1603 1604 if (!bridge_device->multicast_enabled) 1605 return 0; 1606 1607 if (bridge_port->mrouter) 1608 return 0; 1609 1610 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true); 1611 if (err) { 1612 netdev_err(dev, "Unable to set SMID\n"); 1613 goto err_out; 1614 } 1615 1616 return 0; 1617 1618 err_out: 1619 mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1620 return err; 1621 } 1622 1623 static void 1624 mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port, 1625 struct mlxsw_sp_bridge_device 1626 *bridge_device) 1627 { 1628 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1629 struct mlxsw_sp_mid *mid; 1630 bool mc_enabled; 1631 1632 mc_enabled = bridge_device->multicast_enabled; 1633 1634 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1635 if (mc_enabled) 1636 mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, 1637 bridge_device); 1638 else 1639 mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid); 1640 } 1641 } 1642 1643 static void 1644 mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port, 1645 struct mlxsw_sp_bridge_port *bridge_port, 1646 bool add) 1647 { 1648 struct mlxsw_sp_bridge_device *bridge_device; 1649 struct mlxsw_sp_mid *mid; 1650 1651 bridge_device = bridge_port->bridge_device; 1652 1653 list_for_each_entry(mid, &bridge_device->mids_list, list) { 1654 if (!test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) 1655 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, add); 1656 } 1657 } 1658 1659 struct mlxsw_sp_span_respin_work { 1660 struct work_struct work; 1661 struct mlxsw_sp *mlxsw_sp; 1662 }; 1663 1664 static void mlxsw_sp_span_respin_work(struct work_struct *work) 1665 { 1666 struct mlxsw_sp_span_respin_work *respin_work = 1667 container_of(work, struct mlxsw_sp_span_respin_work, work); 1668 1669 rtnl_lock(); 1670 mlxsw_sp_span_respin(respin_work->mlxsw_sp); 1671 rtnl_unlock(); 1672 kfree(respin_work); 1673 } 1674 1675 static void mlxsw_sp_span_respin_schedule(struct mlxsw_sp *mlxsw_sp) 1676 { 1677 struct mlxsw_sp_span_respin_work *respin_work; 1678 1679 respin_work = kzalloc(sizeof(*respin_work), GFP_ATOMIC); 1680 if (!respin_work) 1681 return; 1682 1683 INIT_WORK(&respin_work->work, mlxsw_sp_span_respin_work); 1684 respin_work->mlxsw_sp = mlxsw_sp; 1685 1686 mlxsw_core_schedule_work(&respin_work->work); 1687 } 1688 1689 static int mlxsw_sp_port_obj_add(struct net_device *dev, 1690 const struct switchdev_obj *obj, 1691 struct switchdev_trans *trans) 1692 { 1693 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1694 const struct switchdev_obj_port_vlan *vlan; 1695 int err = 0; 1696 1697 switch (obj->id) { 1698 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1699 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); 1700 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, trans); 1701 1702 if (switchdev_trans_ph_prepare(trans)) { 1703 /* The event is emitted before the changes are actually 1704 * applied to the bridge. Therefore schedule the respin 1705 * call for later, so that the respin logic sees the 1706 * updated bridge state. 1707 */ 1708 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1709 } 1710 break; 1711 case SWITCHDEV_OBJ_ID_PORT_MDB: 1712 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port, 1713 SWITCHDEV_OBJ_PORT_MDB(obj), 1714 trans); 1715 break; 1716 default: 1717 err = -EOPNOTSUPP; 1718 break; 1719 } 1720 1721 return err; 1722 } 1723 1724 static void 1725 mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port, 1726 struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 1727 { 1728 u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid; 1729 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1730 1731 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1732 if (WARN_ON(!mlxsw_sp_port_vlan)) 1733 return; 1734 1735 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1736 mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1737 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1738 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1739 } 1740 1741 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 1742 const struct switchdev_obj_port_vlan *vlan) 1743 { 1744 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1745 struct net_device *orig_dev = vlan->obj.orig_dev; 1746 struct mlxsw_sp_bridge_port *bridge_port; 1747 u16 vid; 1748 1749 if (netif_is_bridge_master(orig_dev)) 1750 return -EOPNOTSUPP; 1751 1752 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1753 if (WARN_ON(!bridge_port)) 1754 return -EINVAL; 1755 1756 if (!bridge_port->bridge_device->vlan_enabled) 1757 return 0; 1758 1759 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) 1760 mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid); 1761 1762 return 0; 1763 } 1764 1765 static int 1766 __mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1767 struct mlxsw_sp_bridge_port *bridge_port, 1768 struct mlxsw_sp_mid *mid) 1769 { 1770 struct net_device *dev = mlxsw_sp_port->dev; 1771 int err; 1772 1773 if (bridge_port->bridge_device->multicast_enabled && 1774 !bridge_port->mrouter) { 1775 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1776 if (err) 1777 netdev_err(dev, "Unable to remove port from SMID\n"); 1778 } 1779 1780 err = mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid); 1781 if (err) 1782 netdev_err(dev, "Unable to remove MC SFD\n"); 1783 1784 return err; 1785 } 1786 1787 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1788 const struct switchdev_obj_port_mdb *mdb) 1789 { 1790 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1791 struct net_device *orig_dev = mdb->obj.orig_dev; 1792 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1793 struct mlxsw_sp_bridge_device *bridge_device; 1794 struct net_device *dev = mlxsw_sp_port->dev; 1795 struct mlxsw_sp_bridge_port *bridge_port; 1796 struct mlxsw_sp_mid *mid; 1797 u16 fid_index; 1798 1799 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1800 if (!bridge_port) 1801 return 0; 1802 1803 bridge_device = bridge_port->bridge_device; 1804 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1805 bridge_device, 1806 mdb->vid); 1807 if (!mlxsw_sp_port_vlan) 1808 return 0; 1809 1810 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1811 1812 mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index); 1813 if (!mid) { 1814 netdev_err(dev, "Unable to remove port from MC DB\n"); 1815 return -EINVAL; 1816 } 1817 1818 return __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, mid); 1819 } 1820 1821 static void 1822 mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, 1823 struct mlxsw_sp_bridge_port *bridge_port) 1824 { 1825 struct mlxsw_sp_bridge_device *bridge_device; 1826 struct mlxsw_sp_mid *mid, *tmp; 1827 1828 bridge_device = bridge_port->bridge_device; 1829 1830 list_for_each_entry_safe(mid, tmp, &bridge_device->mids_list, list) { 1831 if (test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) { 1832 __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, 1833 mid); 1834 } else if (bridge_device->multicast_enabled && 1835 bridge_port->mrouter) { 1836 mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false); 1837 } 1838 } 1839 } 1840 1841 static int mlxsw_sp_port_obj_del(struct net_device *dev, 1842 const struct switchdev_obj *obj) 1843 { 1844 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1845 int err = 0; 1846 1847 switch (obj->id) { 1848 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1849 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port, 1850 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1851 break; 1852 case SWITCHDEV_OBJ_ID_PORT_MDB: 1853 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port, 1854 SWITCHDEV_OBJ_PORT_MDB(obj)); 1855 break; 1856 default: 1857 err = -EOPNOTSUPP; 1858 break; 1859 } 1860 1861 mlxsw_sp_span_respin_schedule(mlxsw_sp_port->mlxsw_sp); 1862 1863 return err; 1864 } 1865 1866 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, 1867 u16 lag_id) 1868 { 1869 struct mlxsw_sp_port *mlxsw_sp_port; 1870 u64 max_lag_members; 1871 int i; 1872 1873 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1874 MAX_LAG_MEMBERS); 1875 for (i = 0; i < max_lag_members; i++) { 1876 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i); 1877 if (mlxsw_sp_port) 1878 return mlxsw_sp_port; 1879 } 1880 return NULL; 1881 } 1882 1883 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { 1884 .switchdev_port_attr_get = mlxsw_sp_port_attr_get, 1885 .switchdev_port_attr_set = mlxsw_sp_port_attr_set, 1886 .switchdev_port_obj_add = mlxsw_sp_port_obj_add, 1887 .switchdev_port_obj_del = mlxsw_sp_port_obj_del, 1888 }; 1889 1890 static int 1891 mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1892 struct mlxsw_sp_bridge_port *bridge_port, 1893 struct mlxsw_sp_port *mlxsw_sp_port, 1894 struct netlink_ext_ack *extack) 1895 { 1896 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1897 1898 if (is_vlan_dev(bridge_port->dev)) { 1899 NL_SET_ERR_MSG_MOD(extack, "Can not enslave a VLAN device to a VLAN-aware bridge"); 1900 return -EINVAL; 1901 } 1902 1903 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1); 1904 if (WARN_ON(!mlxsw_sp_port_vlan)) 1905 return -EINVAL; 1906 1907 /* Let VLAN-aware bridge take care of its own VLANs */ 1908 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1909 1910 return 0; 1911 } 1912 1913 static void 1914 mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1915 struct mlxsw_sp_bridge_port *bridge_port, 1916 struct mlxsw_sp_port *mlxsw_sp_port) 1917 { 1918 mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1); 1919 /* Make sure untagged frames are allowed to ingress */ 1920 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1); 1921 } 1922 1923 static struct mlxsw_sp_fid * 1924 mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1925 u16 vid) 1926 { 1927 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1928 1929 return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid); 1930 } 1931 1932 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = { 1933 .port_join = mlxsw_sp_bridge_8021q_port_join, 1934 .port_leave = mlxsw_sp_bridge_8021q_port_leave, 1935 .fid_get = mlxsw_sp_bridge_8021q_fid_get, 1936 }; 1937 1938 static bool 1939 mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port, 1940 const struct net_device *br_dev) 1941 { 1942 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1943 1944 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 1945 list) { 1946 if (mlxsw_sp_port_vlan->bridge_port && 1947 mlxsw_sp_port_vlan->bridge_port->bridge_device->dev == 1948 br_dev) 1949 return true; 1950 } 1951 1952 return false; 1953 } 1954 1955 static int 1956 mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1957 struct mlxsw_sp_bridge_port *bridge_port, 1958 struct mlxsw_sp_port *mlxsw_sp_port, 1959 struct netlink_ext_ack *extack) 1960 { 1961 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1962 struct net_device *dev = bridge_port->dev; 1963 u16 vid; 1964 1965 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 1966 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1967 if (WARN_ON(!mlxsw_sp_port_vlan)) 1968 return -EINVAL; 1969 1970 if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) { 1971 NL_SET_ERR_MSG_MOD(extack, "Can not bridge VLAN uppers of the same port"); 1972 return -EINVAL; 1973 } 1974 1975 /* Port is no longer usable as a router interface */ 1976 if (mlxsw_sp_port_vlan->fid) 1977 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 1978 1979 return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1980 } 1981 1982 static void 1983 mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1984 struct mlxsw_sp_bridge_port *bridge_port, 1985 struct mlxsw_sp_port *mlxsw_sp_port) 1986 { 1987 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1988 struct net_device *dev = bridge_port->dev; 1989 u16 vid; 1990 1991 vid = is_vlan_dev(dev) ? vlan_dev_vlan_id(dev) : 1; 1992 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1993 if (WARN_ON(!mlxsw_sp_port_vlan)) 1994 return; 1995 1996 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1997 } 1998 1999 static struct mlxsw_sp_fid * 2000 mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 2001 u16 vid) 2002 { 2003 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 2004 2005 return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex); 2006 } 2007 2008 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = { 2009 .port_join = mlxsw_sp_bridge_8021d_port_join, 2010 .port_leave = mlxsw_sp_bridge_8021d_port_leave, 2011 .fid_get = mlxsw_sp_bridge_8021d_fid_get, 2012 }; 2013 2014 int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port, 2015 struct net_device *brport_dev, 2016 struct net_device *br_dev, 2017 struct netlink_ext_ack *extack) 2018 { 2019 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2020 struct mlxsw_sp_bridge_device *bridge_device; 2021 struct mlxsw_sp_bridge_port *bridge_port; 2022 int err; 2023 2024 bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev); 2025 if (IS_ERR(bridge_port)) 2026 return PTR_ERR(bridge_port); 2027 bridge_device = bridge_port->bridge_device; 2028 2029 err = bridge_device->ops->port_join(bridge_device, bridge_port, 2030 mlxsw_sp_port, extack); 2031 if (err) 2032 goto err_port_join; 2033 2034 return 0; 2035 2036 err_port_join: 2037 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2038 return err; 2039 } 2040 2041 void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, 2042 struct net_device *brport_dev, 2043 struct net_device *br_dev) 2044 { 2045 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 2046 struct mlxsw_sp_bridge_device *bridge_device; 2047 struct mlxsw_sp_bridge_port *bridge_port; 2048 2049 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); 2050 if (!bridge_device) 2051 return; 2052 bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 2053 if (!bridge_port) 2054 return; 2055 2056 bridge_device->ops->port_leave(bridge_device, bridge_port, 2057 mlxsw_sp_port); 2058 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 2059 } 2060 2061 static void 2062 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, 2063 const char *mac, u16 vid, 2064 struct net_device *dev) 2065 { 2066 struct switchdev_notifier_fdb_info info; 2067 2068 info.addr = mac; 2069 info.vid = vid; 2070 call_switchdev_notifiers(type, dev, &info.info); 2071 } 2072 2073 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, 2074 char *sfn_pl, int rec_index, 2075 bool adding) 2076 { 2077 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2078 struct mlxsw_sp_bridge_device *bridge_device; 2079 struct mlxsw_sp_bridge_port *bridge_port; 2080 struct mlxsw_sp_port *mlxsw_sp_port; 2081 enum switchdev_notifier_type type; 2082 char mac[ETH_ALEN]; 2083 u8 local_port; 2084 u16 vid, fid; 2085 bool do_notification = true; 2086 int err; 2087 2088 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port); 2089 mlxsw_sp_port = mlxsw_sp->ports[local_port]; 2090 if (!mlxsw_sp_port) { 2091 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n"); 2092 goto just_remove; 2093 } 2094 2095 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2096 if (!mlxsw_sp_port_vlan) { 2097 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2098 goto just_remove; 2099 } 2100 2101 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2102 if (!bridge_port) { 2103 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2104 goto just_remove; 2105 } 2106 2107 bridge_device = bridge_port->bridge_device; 2108 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2109 2110 do_fdb_op: 2111 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, 2112 adding, true); 2113 if (err) { 2114 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2115 return; 2116 } 2117 2118 if (!do_notification) 2119 return; 2120 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2121 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2122 2123 return; 2124 2125 just_remove: 2126 adding = false; 2127 do_notification = false; 2128 goto do_fdb_op; 2129 } 2130 2131 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, 2132 char *sfn_pl, int rec_index, 2133 bool adding) 2134 { 2135 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 2136 struct mlxsw_sp_bridge_device *bridge_device; 2137 struct mlxsw_sp_bridge_port *bridge_port; 2138 struct mlxsw_sp_port *mlxsw_sp_port; 2139 enum switchdev_notifier_type type; 2140 char mac[ETH_ALEN]; 2141 u16 lag_vid = 0; 2142 u16 lag_id; 2143 u16 vid, fid; 2144 bool do_notification = true; 2145 int err; 2146 2147 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id); 2148 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 2149 if (!mlxsw_sp_port) { 2150 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n"); 2151 goto just_remove; 2152 } 2153 2154 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 2155 if (!mlxsw_sp_port_vlan) { 2156 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 2157 goto just_remove; 2158 } 2159 2160 bridge_port = mlxsw_sp_port_vlan->bridge_port; 2161 if (!bridge_port) { 2162 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 2163 goto just_remove; 2164 } 2165 2166 bridge_device = bridge_port->bridge_device; 2167 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 2168 lag_vid = mlxsw_sp_port_vlan->vid; 2169 2170 do_fdb_op: 2171 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid, 2172 adding, true); 2173 if (err) { 2174 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 2175 return; 2176 } 2177 2178 if (!do_notification) 2179 return; 2180 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 2181 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 2182 2183 return; 2184 2185 just_remove: 2186 adding = false; 2187 do_notification = false; 2188 goto do_fdb_op; 2189 } 2190 2191 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, 2192 char *sfn_pl, int rec_index) 2193 { 2194 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) { 2195 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC: 2196 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2197 rec_index, true); 2198 break; 2199 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC: 2200 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 2201 rec_index, false); 2202 break; 2203 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG: 2204 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2205 rec_index, true); 2206 break; 2207 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG: 2208 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 2209 rec_index, false); 2210 break; 2211 } 2212 } 2213 2214 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp) 2215 { 2216 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2217 2218 mlxsw_core_schedule_dw(&bridge->fdb_notify.dw, 2219 msecs_to_jiffies(bridge->fdb_notify.interval)); 2220 } 2221 2222 static void mlxsw_sp_fdb_notify_work(struct work_struct *work) 2223 { 2224 struct mlxsw_sp_bridge *bridge; 2225 struct mlxsw_sp *mlxsw_sp; 2226 char *sfn_pl; 2227 u8 num_rec; 2228 int i; 2229 int err; 2230 2231 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL); 2232 if (!sfn_pl) 2233 return; 2234 2235 bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work); 2236 mlxsw_sp = bridge->mlxsw_sp; 2237 2238 rtnl_lock(); 2239 mlxsw_reg_sfn_pack(sfn_pl); 2240 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); 2241 if (err) { 2242 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n"); 2243 goto out; 2244 } 2245 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl); 2246 for (i = 0; i < num_rec; i++) 2247 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); 2248 2249 out: 2250 rtnl_unlock(); 2251 kfree(sfn_pl); 2252 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2253 } 2254 2255 struct mlxsw_sp_switchdev_event_work { 2256 struct work_struct work; 2257 struct switchdev_notifier_fdb_info fdb_info; 2258 struct net_device *dev; 2259 unsigned long event; 2260 }; 2261 2262 static void mlxsw_sp_switchdev_event_work(struct work_struct *work) 2263 { 2264 struct mlxsw_sp_switchdev_event_work *switchdev_work = 2265 container_of(work, struct mlxsw_sp_switchdev_event_work, work); 2266 struct net_device *dev = switchdev_work->dev; 2267 struct switchdev_notifier_fdb_info *fdb_info; 2268 struct mlxsw_sp_port *mlxsw_sp_port; 2269 int err; 2270 2271 rtnl_lock(); 2272 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev); 2273 if (!mlxsw_sp_port) 2274 goto out; 2275 2276 switch (switchdev_work->event) { 2277 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2278 fdb_info = &switchdev_work->fdb_info; 2279 if (!fdb_info->added_by_user) 2280 break; 2281 err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true); 2282 if (err) 2283 break; 2284 mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, 2285 fdb_info->addr, 2286 fdb_info->vid, dev); 2287 break; 2288 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2289 fdb_info = &switchdev_work->fdb_info; 2290 if (!fdb_info->added_by_user) 2291 break; 2292 mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false); 2293 break; 2294 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2295 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2296 /* These events are only used to potentially update an existing 2297 * SPAN mirror. 2298 */ 2299 break; 2300 } 2301 2302 mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp); 2303 2304 out: 2305 rtnl_unlock(); 2306 kfree(switchdev_work->fdb_info.addr); 2307 kfree(switchdev_work); 2308 dev_put(dev); 2309 } 2310 2311 /* Called under rcu_read_lock() */ 2312 static int mlxsw_sp_switchdev_event(struct notifier_block *unused, 2313 unsigned long event, void *ptr) 2314 { 2315 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2316 struct mlxsw_sp_switchdev_event_work *switchdev_work; 2317 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2318 2319 if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) 2320 return NOTIFY_DONE; 2321 2322 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2323 if (!switchdev_work) 2324 return NOTIFY_BAD; 2325 2326 INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work); 2327 switchdev_work->dev = dev; 2328 switchdev_work->event = event; 2329 2330 switch (event) { 2331 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ 2332 case SWITCHDEV_FDB_DEL_TO_DEVICE: /* fall through */ 2333 case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */ 2334 case SWITCHDEV_FDB_DEL_TO_BRIDGE: 2335 memcpy(&switchdev_work->fdb_info, ptr, 2336 sizeof(switchdev_work->fdb_info)); 2337 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2338 if (!switchdev_work->fdb_info.addr) 2339 goto err_addr_alloc; 2340 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2341 fdb_info->addr); 2342 /* Take a reference on the device. This can be either 2343 * upper device containig mlxsw_sp_port or just a 2344 * mlxsw_sp_port 2345 */ 2346 dev_hold(dev); 2347 break; 2348 default: 2349 kfree(switchdev_work); 2350 return NOTIFY_DONE; 2351 } 2352 2353 mlxsw_core_schedule_work(&switchdev_work->work); 2354 2355 return NOTIFY_DONE; 2356 2357 err_addr_alloc: 2358 kfree(switchdev_work); 2359 return NOTIFY_BAD; 2360 } 2361 2362 static struct notifier_block mlxsw_sp_switchdev_notifier = { 2363 .notifier_call = mlxsw_sp_switchdev_event, 2364 }; 2365 2366 u8 2367 mlxsw_sp_bridge_port_stp_state(struct mlxsw_sp_bridge_port *bridge_port) 2368 { 2369 return bridge_port->stp_state; 2370 } 2371 2372 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) 2373 { 2374 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 2375 int err; 2376 2377 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME); 2378 if (err) { 2379 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); 2380 return err; 2381 } 2382 2383 err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2384 if (err) { 2385 dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n"); 2386 return err; 2387 } 2388 2389 INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work); 2390 bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; 2391 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 2392 return 0; 2393 } 2394 2395 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp) 2396 { 2397 cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw); 2398 unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 2399 2400 } 2401 2402 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp) 2403 { 2404 struct mlxsw_sp_bridge *bridge; 2405 2406 bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL); 2407 if (!bridge) 2408 return -ENOMEM; 2409 mlxsw_sp->bridge = bridge; 2410 bridge->mlxsw_sp = mlxsw_sp; 2411 2412 INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list); 2413 2414 bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops; 2415 bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops; 2416 2417 return mlxsw_sp_fdb_init(mlxsw_sp); 2418 } 2419 2420 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) 2421 { 2422 mlxsw_sp_fdb_fini(mlxsw_sp); 2423 WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list)); 2424 kfree(mlxsw_sp->bridge); 2425 } 2426 2427 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) 2428 { 2429 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; 2430 } 2431 2432 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) 2433 { 2434 } 2435