1 /* 2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c 3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved. 4 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com> 5 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com> 6 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the names of the copyright holders nor the names of its 17 * contributors may be used to endorse or promote products derived from 18 * this software without specific prior written permission. 19 * 20 * Alternatively, this software may be distributed under the terms of the 21 * GNU General Public License ("GPL") version 2 as published by the Free 22 * Software Foundation. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include <linux/kernel.h> 38 #include <linux/types.h> 39 #include <linux/netdevice.h> 40 #include <linux/etherdevice.h> 41 #include <linux/slab.h> 42 #include <linux/device.h> 43 #include <linux/skbuff.h> 44 #include <linux/if_vlan.h> 45 #include <linux/if_bridge.h> 46 #include <linux/workqueue.h> 47 #include <linux/jiffies.h> 48 #include <linux/rtnetlink.h> 49 #include <net/switchdev.h> 50 51 #include "spectrum.h" 52 #include "core.h" 53 #include "reg.h" 54 55 struct mlxsw_sp_bridge_ops; 56 57 struct mlxsw_sp_bridge { 58 struct mlxsw_sp *mlxsw_sp; 59 struct { 60 struct delayed_work dw; 61 #define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100 62 unsigned int interval; /* ms */ 63 } fdb_notify; 64 #define MLXSW_SP_MIN_AGEING_TIME 10 65 #define MLXSW_SP_MAX_AGEING_TIME 1000000 66 #define MLXSW_SP_DEFAULT_AGEING_TIME 300 67 u32 ageing_time; 68 bool vlan_enabled_exists; 69 struct list_head bridges_list; 70 struct list_head mids_list; 71 DECLARE_BITMAP(mids_bitmap, MLXSW_SP_MID_MAX); 72 const struct mlxsw_sp_bridge_ops *bridge_8021q_ops; 73 const struct mlxsw_sp_bridge_ops *bridge_8021d_ops; 74 }; 75 76 struct mlxsw_sp_bridge_device { 77 struct net_device *dev; 78 struct list_head list; 79 struct list_head ports_list; 80 u8 vlan_enabled:1, 81 multicast_enabled:1; 82 const struct mlxsw_sp_bridge_ops *ops; 83 }; 84 85 struct mlxsw_sp_bridge_port { 86 struct net_device *dev; 87 struct mlxsw_sp_bridge_device *bridge_device; 88 struct list_head list; 89 struct list_head vlans_list; 90 unsigned int ref_count; 91 u8 stp_state; 92 unsigned long flags; 93 bool mrouter; 94 bool lagged; 95 union { 96 u16 lag_id; 97 u16 system_port; 98 }; 99 }; 100 101 struct mlxsw_sp_bridge_vlan { 102 struct list_head list; 103 struct list_head port_vlan_list; 104 u16 vid; 105 }; 106 107 struct mlxsw_sp_bridge_ops { 108 int (*port_join)(struct mlxsw_sp_bridge_device *bridge_device, 109 struct mlxsw_sp_bridge_port *bridge_port, 110 struct mlxsw_sp_port *mlxsw_sp_port); 111 void (*port_leave)(struct mlxsw_sp_bridge_device *bridge_device, 112 struct mlxsw_sp_bridge_port *bridge_port, 113 struct mlxsw_sp_port *mlxsw_sp_port); 114 struct mlxsw_sp_fid * 115 (*fid_get)(struct mlxsw_sp_bridge_device *bridge_device, 116 u16 vid); 117 }; 118 119 static int 120 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 121 struct mlxsw_sp_bridge_port *bridge_port, 122 u16 fid_index); 123 124 static struct mlxsw_sp_bridge_device * 125 mlxsw_sp_bridge_device_find(const struct mlxsw_sp_bridge *bridge, 126 const struct net_device *br_dev) 127 { 128 struct mlxsw_sp_bridge_device *bridge_device; 129 130 list_for_each_entry(bridge_device, &bridge->bridges_list, list) 131 if (bridge_device->dev == br_dev) 132 return bridge_device; 133 134 return NULL; 135 } 136 137 static struct mlxsw_sp_bridge_device * 138 mlxsw_sp_bridge_device_create(struct mlxsw_sp_bridge *bridge, 139 struct net_device *br_dev) 140 { 141 struct device *dev = bridge->mlxsw_sp->bus_info->dev; 142 struct mlxsw_sp_bridge_device *bridge_device; 143 bool vlan_enabled = br_vlan_enabled(br_dev); 144 145 if (vlan_enabled && bridge->vlan_enabled_exists) { 146 dev_err(dev, "Only one VLAN-aware bridge is supported\n"); 147 return ERR_PTR(-EINVAL); 148 } 149 150 bridge_device = kzalloc(sizeof(*bridge_device), GFP_KERNEL); 151 if (!bridge_device) 152 return ERR_PTR(-ENOMEM); 153 154 bridge_device->dev = br_dev; 155 bridge_device->vlan_enabled = vlan_enabled; 156 bridge_device->multicast_enabled = br_multicast_enabled(br_dev); 157 INIT_LIST_HEAD(&bridge_device->ports_list); 158 if (vlan_enabled) { 159 bridge->vlan_enabled_exists = true; 160 bridge_device->ops = bridge->bridge_8021q_ops; 161 } else { 162 bridge_device->ops = bridge->bridge_8021d_ops; 163 } 164 list_add(&bridge_device->list, &bridge->bridges_list); 165 166 return bridge_device; 167 } 168 169 static void 170 mlxsw_sp_bridge_device_destroy(struct mlxsw_sp_bridge *bridge, 171 struct mlxsw_sp_bridge_device *bridge_device) 172 { 173 list_del(&bridge_device->list); 174 if (bridge_device->vlan_enabled) 175 bridge->vlan_enabled_exists = false; 176 WARN_ON(!list_empty(&bridge_device->ports_list)); 177 kfree(bridge_device); 178 } 179 180 static struct mlxsw_sp_bridge_device * 181 mlxsw_sp_bridge_device_get(struct mlxsw_sp_bridge *bridge, 182 struct net_device *br_dev) 183 { 184 struct mlxsw_sp_bridge_device *bridge_device; 185 186 bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev); 187 if (bridge_device) 188 return bridge_device; 189 190 return mlxsw_sp_bridge_device_create(bridge, br_dev); 191 } 192 193 static void 194 mlxsw_sp_bridge_device_put(struct mlxsw_sp_bridge *bridge, 195 struct mlxsw_sp_bridge_device *bridge_device) 196 { 197 if (list_empty(&bridge_device->ports_list)) 198 mlxsw_sp_bridge_device_destroy(bridge, bridge_device); 199 } 200 201 static struct mlxsw_sp_bridge_port * 202 __mlxsw_sp_bridge_port_find(const struct mlxsw_sp_bridge_device *bridge_device, 203 const struct net_device *brport_dev) 204 { 205 struct mlxsw_sp_bridge_port *bridge_port; 206 207 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 208 if (bridge_port->dev == brport_dev) 209 return bridge_port; 210 } 211 212 return NULL; 213 } 214 215 static struct mlxsw_sp_bridge_port * 216 mlxsw_sp_bridge_port_find(struct mlxsw_sp_bridge *bridge, 217 struct net_device *brport_dev) 218 { 219 struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev); 220 struct mlxsw_sp_bridge_device *bridge_device; 221 222 if (!br_dev) 223 return NULL; 224 225 bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev); 226 if (!bridge_device) 227 return NULL; 228 229 return __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 230 } 231 232 static struct mlxsw_sp_bridge_port * 233 mlxsw_sp_bridge_port_create(struct mlxsw_sp_bridge_device *bridge_device, 234 struct net_device *brport_dev) 235 { 236 struct mlxsw_sp_bridge_port *bridge_port; 237 struct mlxsw_sp_port *mlxsw_sp_port; 238 239 bridge_port = kzalloc(sizeof(*bridge_port), GFP_KERNEL); 240 if (!bridge_port) 241 return NULL; 242 243 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(brport_dev); 244 bridge_port->lagged = mlxsw_sp_port->lagged; 245 if (bridge_port->lagged) 246 bridge_port->lag_id = mlxsw_sp_port->lag_id; 247 else 248 bridge_port->system_port = mlxsw_sp_port->local_port; 249 bridge_port->dev = brport_dev; 250 bridge_port->bridge_device = bridge_device; 251 bridge_port->stp_state = BR_STATE_DISABLED; 252 bridge_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC; 253 INIT_LIST_HEAD(&bridge_port->vlans_list); 254 list_add(&bridge_port->list, &bridge_device->ports_list); 255 bridge_port->ref_count = 1; 256 257 return bridge_port; 258 } 259 260 static void 261 mlxsw_sp_bridge_port_destroy(struct mlxsw_sp_bridge_port *bridge_port) 262 { 263 list_del(&bridge_port->list); 264 WARN_ON(!list_empty(&bridge_port->vlans_list)); 265 kfree(bridge_port); 266 } 267 268 static bool 269 mlxsw_sp_bridge_port_should_destroy(const struct mlxsw_sp_bridge_port * 270 bridge_port) 271 { 272 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_port->dev); 273 274 /* In case ports were pulled from out of a bridged LAG, then 275 * it's possible the reference count isn't zero, yet the bridge 276 * port should be destroyed, as it's no longer an upper of ours. 277 */ 278 if (!mlxsw_sp && list_empty(&bridge_port->vlans_list)) 279 return true; 280 else if (bridge_port->ref_count == 0) 281 return true; 282 else 283 return false; 284 } 285 286 static struct mlxsw_sp_bridge_port * 287 mlxsw_sp_bridge_port_get(struct mlxsw_sp_bridge *bridge, 288 struct net_device *brport_dev) 289 { 290 struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev); 291 struct mlxsw_sp_bridge_device *bridge_device; 292 struct mlxsw_sp_bridge_port *bridge_port; 293 int err; 294 295 bridge_port = mlxsw_sp_bridge_port_find(bridge, brport_dev); 296 if (bridge_port) { 297 bridge_port->ref_count++; 298 return bridge_port; 299 } 300 301 bridge_device = mlxsw_sp_bridge_device_get(bridge, br_dev); 302 if (IS_ERR(bridge_device)) 303 return ERR_CAST(bridge_device); 304 305 bridge_port = mlxsw_sp_bridge_port_create(bridge_device, brport_dev); 306 if (!bridge_port) { 307 err = -ENOMEM; 308 goto err_bridge_port_create; 309 } 310 311 return bridge_port; 312 313 err_bridge_port_create: 314 mlxsw_sp_bridge_device_put(bridge, bridge_device); 315 return ERR_PTR(err); 316 } 317 318 static void mlxsw_sp_bridge_port_put(struct mlxsw_sp_bridge *bridge, 319 struct mlxsw_sp_bridge_port *bridge_port) 320 { 321 struct mlxsw_sp_bridge_device *bridge_device; 322 323 bridge_port->ref_count--; 324 if (!mlxsw_sp_bridge_port_should_destroy(bridge_port)) 325 return; 326 bridge_device = bridge_port->bridge_device; 327 mlxsw_sp_bridge_port_destroy(bridge_port); 328 mlxsw_sp_bridge_device_put(bridge, bridge_device); 329 } 330 331 static struct mlxsw_sp_port_vlan * 332 mlxsw_sp_port_vlan_find_by_bridge(struct mlxsw_sp_port *mlxsw_sp_port, 333 const struct mlxsw_sp_bridge_device * 334 bridge_device, 335 u16 vid) 336 { 337 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 338 339 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 340 list) { 341 if (!mlxsw_sp_port_vlan->bridge_port) 342 continue; 343 if (mlxsw_sp_port_vlan->bridge_port->bridge_device != 344 bridge_device) 345 continue; 346 if (bridge_device->vlan_enabled && 347 mlxsw_sp_port_vlan->vid != vid) 348 continue; 349 return mlxsw_sp_port_vlan; 350 } 351 352 return NULL; 353 } 354 355 static struct mlxsw_sp_port_vlan* 356 mlxsw_sp_port_vlan_find_by_fid(struct mlxsw_sp_port *mlxsw_sp_port, 357 u16 fid_index) 358 { 359 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 360 361 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 362 list) { 363 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 364 365 if (fid && mlxsw_sp_fid_index(fid) == fid_index) 366 return mlxsw_sp_port_vlan; 367 } 368 369 return NULL; 370 } 371 372 static struct mlxsw_sp_bridge_vlan * 373 mlxsw_sp_bridge_vlan_find(const struct mlxsw_sp_bridge_port *bridge_port, 374 u16 vid) 375 { 376 struct mlxsw_sp_bridge_vlan *bridge_vlan; 377 378 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 379 if (bridge_vlan->vid == vid) 380 return bridge_vlan; 381 } 382 383 return NULL; 384 } 385 386 static struct mlxsw_sp_bridge_vlan * 387 mlxsw_sp_bridge_vlan_create(struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 388 { 389 struct mlxsw_sp_bridge_vlan *bridge_vlan; 390 391 bridge_vlan = kzalloc(sizeof(*bridge_vlan), GFP_KERNEL); 392 if (!bridge_vlan) 393 return NULL; 394 395 INIT_LIST_HEAD(&bridge_vlan->port_vlan_list); 396 bridge_vlan->vid = vid; 397 list_add(&bridge_vlan->list, &bridge_port->vlans_list); 398 399 return bridge_vlan; 400 } 401 402 static void 403 mlxsw_sp_bridge_vlan_destroy(struct mlxsw_sp_bridge_vlan *bridge_vlan) 404 { 405 list_del(&bridge_vlan->list); 406 WARN_ON(!list_empty(&bridge_vlan->port_vlan_list)); 407 kfree(bridge_vlan); 408 } 409 410 static struct mlxsw_sp_bridge_vlan * 411 mlxsw_sp_bridge_vlan_get(struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 412 { 413 struct mlxsw_sp_bridge_vlan *bridge_vlan; 414 415 bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid); 416 if (bridge_vlan) 417 return bridge_vlan; 418 419 return mlxsw_sp_bridge_vlan_create(bridge_port, vid); 420 } 421 422 static void mlxsw_sp_bridge_vlan_put(struct mlxsw_sp_bridge_vlan *bridge_vlan) 423 { 424 if (list_empty(&bridge_vlan->port_vlan_list)) 425 mlxsw_sp_bridge_vlan_destroy(bridge_vlan); 426 } 427 428 static void mlxsw_sp_port_bridge_flags_get(struct mlxsw_sp_bridge *bridge, 429 struct net_device *dev, 430 unsigned long *brport_flags) 431 { 432 struct mlxsw_sp_bridge_port *bridge_port; 433 434 bridge_port = mlxsw_sp_bridge_port_find(bridge, dev); 435 if (WARN_ON(!bridge_port)) 436 return; 437 438 memcpy(brport_flags, &bridge_port->flags, sizeof(*brport_flags)); 439 } 440 441 static int mlxsw_sp_port_attr_get(struct net_device *dev, 442 struct switchdev_attr *attr) 443 { 444 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 445 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 446 447 switch (attr->id) { 448 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: 449 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac); 450 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac, 451 attr->u.ppid.id_len); 452 break; 453 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 454 mlxsw_sp_port_bridge_flags_get(mlxsw_sp->bridge, attr->orig_dev, 455 &attr->u.brport_flags); 456 break; 457 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT: 458 attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD; 459 break; 460 default: 461 return -EOPNOTSUPP; 462 } 463 464 return 0; 465 } 466 467 static int 468 mlxsw_sp_port_bridge_vlan_stp_set(struct mlxsw_sp_port *mlxsw_sp_port, 469 struct mlxsw_sp_bridge_vlan *bridge_vlan, 470 u8 state) 471 { 472 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 473 474 list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list, 475 bridge_vlan_node) { 476 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port) 477 continue; 478 return mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, 479 bridge_vlan->vid, state); 480 } 481 482 return 0; 483 } 484 485 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port, 486 struct switchdev_trans *trans, 487 struct net_device *orig_dev, 488 u8 state) 489 { 490 struct mlxsw_sp_bridge_port *bridge_port; 491 struct mlxsw_sp_bridge_vlan *bridge_vlan; 492 int err; 493 494 if (switchdev_trans_ph_prepare(trans)) 495 return 0; 496 497 /* It's possible we failed to enslave the port, yet this 498 * operation is executed due to it being deferred. 499 */ 500 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge, 501 orig_dev); 502 if (!bridge_port) 503 return 0; 504 505 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 506 err = mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port, 507 bridge_vlan, state); 508 if (err) 509 goto err_port_bridge_vlan_stp_set; 510 } 511 512 bridge_port->stp_state = state; 513 514 return 0; 515 516 err_port_bridge_vlan_stp_set: 517 list_for_each_entry_continue_reverse(bridge_vlan, 518 &bridge_port->vlans_list, list) 519 mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port, bridge_vlan, 520 bridge_port->stp_state); 521 return err; 522 } 523 524 static int 525 mlxsw_sp_port_bridge_vlan_flood_set(struct mlxsw_sp_port *mlxsw_sp_port, 526 struct mlxsw_sp_bridge_vlan *bridge_vlan, 527 enum mlxsw_sp_flood_type packet_type, 528 bool member) 529 { 530 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 531 532 list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list, 533 bridge_vlan_node) { 534 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port) 535 continue; 536 return mlxsw_sp_fid_flood_set(mlxsw_sp_port_vlan->fid, 537 packet_type, 538 mlxsw_sp_port->local_port, 539 member); 540 } 541 542 return 0; 543 } 544 545 static int 546 mlxsw_sp_bridge_port_flood_table_set(struct mlxsw_sp_port *mlxsw_sp_port, 547 struct mlxsw_sp_bridge_port *bridge_port, 548 enum mlxsw_sp_flood_type packet_type, 549 bool member) 550 { 551 struct mlxsw_sp_bridge_vlan *bridge_vlan; 552 int err; 553 554 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 555 err = mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port, 556 bridge_vlan, 557 packet_type, 558 member); 559 if (err) 560 goto err_port_bridge_vlan_flood_set; 561 } 562 563 return 0; 564 565 err_port_bridge_vlan_flood_set: 566 list_for_each_entry_continue_reverse(bridge_vlan, 567 &bridge_port->vlans_list, list) 568 mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port, bridge_vlan, 569 packet_type, !member); 570 return err; 571 } 572 573 static int 574 mlxsw_sp_port_bridge_vlan_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, 575 struct mlxsw_sp_bridge_vlan *bridge_vlan, 576 bool set) 577 { 578 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 579 u16 vid = bridge_vlan->vid; 580 581 list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list, 582 bridge_vlan_node) { 583 if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port) 584 continue; 585 return mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, set); 586 } 587 588 return 0; 589 } 590 591 static int 592 mlxsw_sp_bridge_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port, 593 struct mlxsw_sp_bridge_port *bridge_port, 594 bool set) 595 { 596 struct mlxsw_sp_bridge_vlan *bridge_vlan; 597 int err; 598 599 list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) { 600 err = mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port, 601 bridge_vlan, set); 602 if (err) 603 goto err_port_bridge_vlan_learning_set; 604 } 605 606 return 0; 607 608 err_port_bridge_vlan_learning_set: 609 list_for_each_entry_continue_reverse(bridge_vlan, 610 &bridge_port->vlans_list, list) 611 mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port, 612 bridge_vlan, !set); 613 return err; 614 } 615 616 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port, 617 struct switchdev_trans *trans, 618 struct net_device *orig_dev, 619 unsigned long brport_flags) 620 { 621 struct mlxsw_sp_bridge_port *bridge_port; 622 int err; 623 624 if (switchdev_trans_ph_prepare(trans)) 625 return 0; 626 627 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge, 628 orig_dev); 629 if (!bridge_port) 630 return 0; 631 632 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port, 633 MLXSW_SP_FLOOD_TYPE_UC, 634 brport_flags & BR_FLOOD); 635 if (err) 636 return err; 637 638 err = mlxsw_sp_bridge_port_learning_set(mlxsw_sp_port, bridge_port, 639 brport_flags & BR_LEARNING); 640 if (err) 641 return err; 642 643 memcpy(&bridge_port->flags, &brport_flags, sizeof(brport_flags)); 644 645 return 0; 646 } 647 648 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time) 649 { 650 char sfdat_pl[MLXSW_REG_SFDAT_LEN]; 651 int err; 652 653 mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time); 654 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl); 655 if (err) 656 return err; 657 mlxsw_sp->bridge->ageing_time = ageing_time; 658 return 0; 659 } 660 661 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port, 662 struct switchdev_trans *trans, 663 unsigned long ageing_clock_t) 664 { 665 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 666 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); 667 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000; 668 669 if (switchdev_trans_ph_prepare(trans)) { 670 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME || 671 ageing_time > MLXSW_SP_MAX_AGEING_TIME) 672 return -ERANGE; 673 else 674 return 0; 675 } 676 677 return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time); 678 } 679 680 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, 681 struct switchdev_trans *trans, 682 struct net_device *orig_dev, 683 bool vlan_enabled) 684 { 685 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 686 struct mlxsw_sp_bridge_device *bridge_device; 687 688 if (!switchdev_trans_ph_prepare(trans)) 689 return 0; 690 691 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev); 692 if (WARN_ON(!bridge_device)) 693 return -EINVAL; 694 695 if (bridge_device->vlan_enabled == vlan_enabled) 696 return 0; 697 698 netdev_err(bridge_device->dev, "VLAN filtering can't be changed for existing bridge\n"); 699 return -EINVAL; 700 } 701 702 static int mlxsw_sp_port_attr_mc_router_set(struct mlxsw_sp_port *mlxsw_sp_port, 703 struct switchdev_trans *trans, 704 struct net_device *orig_dev, 705 bool is_port_mc_router) 706 { 707 struct mlxsw_sp_bridge_port *bridge_port; 708 int err; 709 710 if (switchdev_trans_ph_prepare(trans)) 711 return 0; 712 713 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge, 714 orig_dev); 715 if (!bridge_port) 716 return 0; 717 718 if (!bridge_port->bridge_device->multicast_enabled) 719 goto out; 720 721 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port, 722 MLXSW_SP_FLOOD_TYPE_MC, 723 is_port_mc_router); 724 if (err) 725 return err; 726 727 out: 728 bridge_port->mrouter = is_port_mc_router; 729 return 0; 730 } 731 732 static int mlxsw_sp_port_mc_disabled_set(struct mlxsw_sp_port *mlxsw_sp_port, 733 struct switchdev_trans *trans, 734 struct net_device *orig_dev, 735 bool mc_disabled) 736 { 737 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 738 struct mlxsw_sp_bridge_device *bridge_device; 739 struct mlxsw_sp_bridge_port *bridge_port; 740 int err; 741 742 if (switchdev_trans_ph_prepare(trans)) 743 return 0; 744 745 /* It's possible we failed to enslave the port, yet this 746 * operation is executed due to it being deferred. 747 */ 748 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev); 749 if (!bridge_device) 750 return 0; 751 752 list_for_each_entry(bridge_port, &bridge_device->ports_list, list) { 753 enum mlxsw_sp_flood_type packet_type = MLXSW_SP_FLOOD_TYPE_MC; 754 bool member = mc_disabled ? true : bridge_port->mrouter; 755 756 err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, 757 bridge_port, 758 packet_type, member); 759 if (err) 760 return err; 761 } 762 763 bridge_device->multicast_enabled = !mc_disabled; 764 765 return 0; 766 } 767 768 static int mlxsw_sp_port_attr_set(struct net_device *dev, 769 const struct switchdev_attr *attr, 770 struct switchdev_trans *trans) 771 { 772 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 773 int err; 774 775 switch (attr->id) { 776 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 777 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans, 778 attr->orig_dev, 779 attr->u.stp_state); 780 break; 781 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 782 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans, 783 attr->orig_dev, 784 attr->u.brport_flags); 785 break; 786 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: 787 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans, 788 attr->u.ageing_time); 789 break; 790 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 791 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans, 792 attr->orig_dev, 793 attr->u.vlan_filtering); 794 break; 795 case SWITCHDEV_ATTR_ID_PORT_MROUTER: 796 err = mlxsw_sp_port_attr_mc_router_set(mlxsw_sp_port, trans, 797 attr->orig_dev, 798 attr->u.mrouter); 799 break; 800 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED: 801 err = mlxsw_sp_port_mc_disabled_set(mlxsw_sp_port, trans, 802 attr->orig_dev, 803 attr->u.mc_disabled); 804 break; 805 default: 806 err = -EOPNOTSUPP; 807 break; 808 } 809 810 return err; 811 } 812 813 static bool mlxsw_sp_mc_flood(const struct mlxsw_sp_bridge_port *bridge_port) 814 { 815 const struct mlxsw_sp_bridge_device *bridge_device; 816 817 bridge_device = bridge_port->bridge_device; 818 return !bridge_device->multicast_enabled ? true : bridge_port->mrouter; 819 } 820 821 static int 822 mlxsw_sp_port_vlan_fid_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, 823 struct mlxsw_sp_bridge_port *bridge_port) 824 { 825 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 826 struct mlxsw_sp_bridge_device *bridge_device; 827 u8 local_port = mlxsw_sp_port->local_port; 828 u16 vid = mlxsw_sp_port_vlan->vid; 829 struct mlxsw_sp_fid *fid; 830 int err; 831 832 bridge_device = bridge_port->bridge_device; 833 fid = bridge_device->ops->fid_get(bridge_device, vid); 834 if (IS_ERR(fid)) 835 return PTR_ERR(fid); 836 837 err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, 838 bridge_port->flags & BR_FLOOD); 839 if (err) 840 goto err_fid_uc_flood_set; 841 842 err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, 843 mlxsw_sp_mc_flood(bridge_port)); 844 if (err) 845 goto err_fid_mc_flood_set; 846 847 err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, 848 true); 849 if (err) 850 goto err_fid_bc_flood_set; 851 852 err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid); 853 if (err) 854 goto err_fid_port_vid_map; 855 856 mlxsw_sp_port_vlan->fid = fid; 857 858 return 0; 859 860 err_fid_port_vid_map: 861 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false); 862 err_fid_bc_flood_set: 863 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false); 864 err_fid_mc_flood_set: 865 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false); 866 err_fid_uc_flood_set: 867 mlxsw_sp_fid_put(fid); 868 return err; 869 } 870 871 static void 872 mlxsw_sp_port_vlan_fid_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 873 { 874 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 875 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 876 u8 local_port = mlxsw_sp_port->local_port; 877 u16 vid = mlxsw_sp_port_vlan->vid; 878 879 mlxsw_sp_port_vlan->fid = NULL; 880 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); 881 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false); 882 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false); 883 mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false); 884 mlxsw_sp_fid_put(fid); 885 } 886 887 static u16 888 mlxsw_sp_port_pvid_determine(const struct mlxsw_sp_port *mlxsw_sp_port, 889 u16 vid, bool is_pvid) 890 { 891 if (is_pvid) 892 return vid; 893 else if (mlxsw_sp_port->pvid == vid) 894 return 0; /* Dis-allow untagged packets */ 895 else 896 return mlxsw_sp_port->pvid; 897 } 898 899 static int 900 mlxsw_sp_port_vlan_bridge_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, 901 struct mlxsw_sp_bridge_port *bridge_port) 902 { 903 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 904 struct mlxsw_sp_bridge_vlan *bridge_vlan; 905 u16 vid = mlxsw_sp_port_vlan->vid; 906 int err; 907 908 /* No need to continue if only VLAN flags were changed */ 909 if (mlxsw_sp_port_vlan->bridge_port) 910 return 0; 911 912 err = mlxsw_sp_port_vlan_fid_join(mlxsw_sp_port_vlan, bridge_port); 913 if (err) 914 return err; 915 916 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, 917 bridge_port->flags & BR_LEARNING); 918 if (err) 919 goto err_port_vid_learning_set; 920 921 err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, 922 bridge_port->stp_state); 923 if (err) 924 goto err_port_vid_stp_set; 925 926 bridge_vlan = mlxsw_sp_bridge_vlan_get(bridge_port, vid); 927 if (!bridge_vlan) { 928 err = -ENOMEM; 929 goto err_bridge_vlan_get; 930 } 931 932 list_add(&mlxsw_sp_port_vlan->bridge_vlan_node, 933 &bridge_vlan->port_vlan_list); 934 935 mlxsw_sp_bridge_port_get(mlxsw_sp_port->mlxsw_sp->bridge, 936 bridge_port->dev); 937 mlxsw_sp_port_vlan->bridge_port = bridge_port; 938 939 return 0; 940 941 err_bridge_vlan_get: 942 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED); 943 err_port_vid_stp_set: 944 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 945 err_port_vid_learning_set: 946 mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan); 947 return err; 948 } 949 950 void 951 mlxsw_sp_port_vlan_bridge_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 952 { 953 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 954 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 955 struct mlxsw_sp_bridge_vlan *bridge_vlan; 956 struct mlxsw_sp_bridge_port *bridge_port; 957 u16 vid = mlxsw_sp_port_vlan->vid; 958 bool last; 959 960 if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021Q && 961 mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021D)) 962 return; 963 964 bridge_port = mlxsw_sp_port_vlan->bridge_port; 965 bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid); 966 last = list_is_singular(&bridge_vlan->port_vlan_list); 967 968 list_del(&mlxsw_sp_port_vlan->bridge_vlan_node); 969 mlxsw_sp_bridge_vlan_put(bridge_vlan); 970 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED); 971 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 972 if (last) 973 mlxsw_sp_bridge_port_fdb_flush(mlxsw_sp_port->mlxsw_sp, 974 bridge_port, 975 mlxsw_sp_fid_index(fid)); 976 mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan); 977 978 mlxsw_sp_bridge_port_put(mlxsw_sp_port->mlxsw_sp->bridge, bridge_port); 979 mlxsw_sp_port_vlan->bridge_port = NULL; 980 } 981 982 static int 983 mlxsw_sp_bridge_port_vlan_add(struct mlxsw_sp_port *mlxsw_sp_port, 984 struct mlxsw_sp_bridge_port *bridge_port, 985 u16 vid, bool is_untagged, bool is_pvid) 986 { 987 u16 pvid = mlxsw_sp_port_pvid_determine(mlxsw_sp_port, vid, is_pvid); 988 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 989 u16 old_pvid = mlxsw_sp_port->pvid; 990 int err; 991 992 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid); 993 if (IS_ERR(mlxsw_sp_port_vlan)) 994 return PTR_ERR(mlxsw_sp_port_vlan); 995 996 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true, 997 is_untagged); 998 if (err) 999 goto err_port_vlan_set; 1000 1001 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1002 if (err) 1003 goto err_port_pvid_set; 1004 1005 err = mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1006 if (err) 1007 goto err_port_vlan_bridge_join; 1008 1009 return 0; 1010 1011 err_port_vlan_bridge_join: 1012 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid); 1013 err_port_pvid_set: 1014 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1015 err_port_vlan_set: 1016 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1017 return err; 1018 } 1019 1020 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port, 1021 const struct switchdev_obj_port_vlan *vlan, 1022 struct switchdev_trans *trans) 1023 { 1024 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 1025 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 1026 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1027 struct net_device *orig_dev = vlan->obj.orig_dev; 1028 struct mlxsw_sp_bridge_port *bridge_port; 1029 u16 vid; 1030 1031 if (switchdev_trans_ph_prepare(trans)) 1032 return 0; 1033 1034 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1035 if (WARN_ON(!bridge_port)) 1036 return -EINVAL; 1037 1038 if (!bridge_port->bridge_device->vlan_enabled) 1039 return 0; 1040 1041 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1042 int err; 1043 1044 err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port, 1045 vid, flag_untagged, 1046 flag_pvid); 1047 if (err) 1048 return err; 1049 } 1050 1051 return 0; 1052 } 1053 1054 static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged) 1055 { 1056 return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID : 1057 MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID; 1058 } 1059 1060 static int 1061 mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp, 1062 struct mlxsw_sp_bridge_port *bridge_port, 1063 u16 fid_index) 1064 { 1065 bool lagged = bridge_port->lagged; 1066 char sfdf_pl[MLXSW_REG_SFDF_LEN]; 1067 u16 system_port; 1068 1069 system_port = lagged ? bridge_port->lag_id : bridge_port->system_port; 1070 mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged)); 1071 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index); 1072 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port); 1073 1074 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl); 1075 } 1076 1077 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic) 1078 { 1079 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS : 1080 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY; 1081 } 1082 1083 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding) 1084 { 1085 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT : 1086 MLXSW_REG_SFD_OP_WRITE_REMOVE; 1087 } 1088 1089 static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1090 const char *mac, u16 fid, bool adding, 1091 enum mlxsw_reg_sfd_rec_action action, 1092 bool dynamic) 1093 { 1094 char *sfd_pl; 1095 int err; 1096 1097 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1098 if (!sfd_pl) 1099 return -ENOMEM; 1100 1101 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1102 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1103 mac, fid, action, local_port); 1104 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1105 kfree(sfd_pl); 1106 1107 return err; 1108 } 1109 1110 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port, 1111 const char *mac, u16 fid, bool adding, 1112 bool dynamic) 1113 { 1114 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding, 1115 MLXSW_REG_SFD_REC_ACTION_NOP, dynamic); 1116 } 1117 1118 int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid, 1119 bool adding) 1120 { 1121 return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding, 1122 MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER, 1123 false); 1124 } 1125 1126 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id, 1127 const char *mac, u16 fid, u16 lag_vid, 1128 bool adding, bool dynamic) 1129 { 1130 char *sfd_pl; 1131 int err; 1132 1133 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1134 if (!sfd_pl) 1135 return -ENOMEM; 1136 1137 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1138 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic), 1139 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP, 1140 lag_vid, lag_id); 1141 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1142 kfree(sfd_pl); 1143 1144 return err; 1145 } 1146 1147 static int 1148 mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port, 1149 struct switchdev_notifier_fdb_info *fdb_info, bool adding) 1150 { 1151 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1152 struct net_device *orig_dev = fdb_info->info.dev; 1153 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1154 struct mlxsw_sp_bridge_device *bridge_device; 1155 struct mlxsw_sp_bridge_port *bridge_port; 1156 u16 fid_index, vid; 1157 1158 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1159 if (!bridge_port) 1160 return -EINVAL; 1161 1162 bridge_device = bridge_port->bridge_device; 1163 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1164 bridge_device, 1165 fdb_info->vid); 1166 if (!mlxsw_sp_port_vlan) 1167 return 0; 1168 1169 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1170 vid = mlxsw_sp_port_vlan->vid; 1171 1172 if (!bridge_port->lagged) 1173 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 1174 bridge_port->system_port, 1175 fdb_info->addr, fid_index, 1176 adding, false); 1177 else 1178 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, 1179 bridge_port->lag_id, 1180 fdb_info->addr, fid_index, 1181 vid, adding, false); 1182 } 1183 1184 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr, 1185 u16 fid, u16 mid, bool adding) 1186 { 1187 char *sfd_pl; 1188 int err; 1189 1190 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL); 1191 if (!sfd_pl) 1192 return -ENOMEM; 1193 1194 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0); 1195 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid, 1196 MLXSW_REG_SFD_REC_ACTION_NOP, mid); 1197 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl); 1198 kfree(sfd_pl); 1199 return err; 1200 } 1201 1202 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid, 1203 bool add, bool clear_all_ports) 1204 { 1205 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1206 char *smid_pl; 1207 int err, i; 1208 1209 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL); 1210 if (!smid_pl) 1211 return -ENOMEM; 1212 1213 mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add); 1214 if (clear_all_ports) { 1215 for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++) 1216 if (mlxsw_sp->ports[i]) 1217 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1); 1218 } 1219 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl); 1220 kfree(smid_pl); 1221 return err; 1222 } 1223 1224 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp, 1225 const unsigned char *addr, 1226 u16 fid) 1227 { 1228 struct mlxsw_sp_mid *mid; 1229 1230 list_for_each_entry(mid, &mlxsw_sp->bridge->mids_list, list) { 1231 if (ether_addr_equal(mid->addr, addr) && mid->fid == fid) 1232 return mid; 1233 } 1234 return NULL; 1235 } 1236 1237 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp, 1238 const unsigned char *addr, 1239 u16 fid) 1240 { 1241 struct mlxsw_sp_mid *mid; 1242 u16 mid_idx; 1243 1244 mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap, 1245 MLXSW_SP_MID_MAX); 1246 if (mid_idx == MLXSW_SP_MID_MAX) 1247 return NULL; 1248 1249 mid = kzalloc(sizeof(*mid), GFP_KERNEL); 1250 if (!mid) 1251 return NULL; 1252 1253 set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap); 1254 ether_addr_copy(mid->addr, addr); 1255 mid->fid = fid; 1256 mid->mid = mid_idx; 1257 mid->ref_count = 0; 1258 list_add_tail(&mid->list, &mlxsw_sp->bridge->mids_list); 1259 1260 return mid; 1261 } 1262 1263 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp, 1264 struct mlxsw_sp_mid *mid) 1265 { 1266 if (--mid->ref_count == 0) { 1267 list_del(&mid->list); 1268 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap); 1269 kfree(mid); 1270 return 1; 1271 } 1272 return 0; 1273 } 1274 1275 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port, 1276 const struct switchdev_obj_port_mdb *mdb, 1277 struct switchdev_trans *trans) 1278 { 1279 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1280 struct net_device *orig_dev = mdb->obj.orig_dev; 1281 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1282 struct net_device *dev = mlxsw_sp_port->dev; 1283 struct mlxsw_sp_bridge_device *bridge_device; 1284 struct mlxsw_sp_bridge_port *bridge_port; 1285 struct mlxsw_sp_mid *mid; 1286 u16 fid_index; 1287 int err = 0; 1288 1289 if (switchdev_trans_ph_prepare(trans)) 1290 return 0; 1291 1292 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1293 if (!bridge_port) 1294 return 0; 1295 1296 bridge_device = bridge_port->bridge_device; 1297 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1298 bridge_device, 1299 mdb->vid); 1300 if (!mlxsw_sp_port_vlan) 1301 return 0; 1302 1303 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1304 1305 mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid_index); 1306 if (!mid) { 1307 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, fid_index); 1308 if (!mid) { 1309 netdev_err(dev, "Unable to allocate MC group\n"); 1310 return -ENOMEM; 1311 } 1312 } 1313 mid->ref_count++; 1314 1315 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true, 1316 mid->ref_count == 1); 1317 if (err) { 1318 netdev_err(dev, "Unable to set SMID\n"); 1319 goto err_out; 1320 } 1321 1322 if (mid->ref_count == 1) { 1323 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid_index, 1324 mid->mid, true); 1325 if (err) { 1326 netdev_err(dev, "Unable to set MC SFD\n"); 1327 goto err_out; 1328 } 1329 } 1330 1331 return 0; 1332 1333 err_out: 1334 __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid); 1335 return err; 1336 } 1337 1338 static int mlxsw_sp_port_obj_add(struct net_device *dev, 1339 const struct switchdev_obj *obj, 1340 struct switchdev_trans *trans) 1341 { 1342 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1343 int err = 0; 1344 1345 switch (obj->id) { 1346 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1347 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, 1348 SWITCHDEV_OBJ_PORT_VLAN(obj), 1349 trans); 1350 break; 1351 case SWITCHDEV_OBJ_ID_PORT_MDB: 1352 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port, 1353 SWITCHDEV_OBJ_PORT_MDB(obj), 1354 trans); 1355 break; 1356 default: 1357 err = -EOPNOTSUPP; 1358 break; 1359 } 1360 1361 return err; 1362 } 1363 1364 static void 1365 mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port, 1366 struct mlxsw_sp_bridge_port *bridge_port, u16 vid) 1367 { 1368 u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid; 1369 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1370 1371 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1372 if (WARN_ON(!mlxsw_sp_port_vlan)) 1373 return; 1374 1375 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1376 mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid); 1377 mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false); 1378 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1379 } 1380 1381 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port, 1382 const struct switchdev_obj_port_vlan *vlan) 1383 { 1384 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1385 struct net_device *orig_dev = vlan->obj.orig_dev; 1386 struct mlxsw_sp_bridge_port *bridge_port; 1387 u16 vid; 1388 1389 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1390 if (WARN_ON(!bridge_port)) 1391 return -EINVAL; 1392 1393 if (!bridge_port->bridge_device->vlan_enabled) 1394 return 0; 1395 1396 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) 1397 mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid); 1398 1399 return 0; 1400 } 1401 1402 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port, 1403 const struct switchdev_obj_port_mdb *mdb) 1404 { 1405 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1406 struct net_device *orig_dev = mdb->obj.orig_dev; 1407 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1408 struct mlxsw_sp_bridge_device *bridge_device; 1409 struct net_device *dev = mlxsw_sp_port->dev; 1410 struct mlxsw_sp_bridge_port *bridge_port; 1411 struct mlxsw_sp_mid *mid; 1412 u16 fid_index; 1413 u16 mid_idx; 1414 int err = 0; 1415 1416 bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev); 1417 if (!bridge_port) 1418 return 0; 1419 1420 bridge_device = bridge_port->bridge_device; 1421 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port, 1422 bridge_device, 1423 mdb->vid); 1424 if (!mlxsw_sp_port_vlan) 1425 return 0; 1426 1427 fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid); 1428 1429 mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, fid_index); 1430 if (!mid) { 1431 netdev_err(dev, "Unable to remove port from MC DB\n"); 1432 return -EINVAL; 1433 } 1434 1435 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false); 1436 if (err) 1437 netdev_err(dev, "Unable to remove port from SMID\n"); 1438 1439 mid_idx = mid->mid; 1440 if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) { 1441 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid_index, 1442 mid_idx, false); 1443 if (err) 1444 netdev_err(dev, "Unable to remove MC SFD\n"); 1445 } 1446 1447 return err; 1448 } 1449 1450 static int mlxsw_sp_port_obj_del(struct net_device *dev, 1451 const struct switchdev_obj *obj) 1452 { 1453 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev); 1454 int err = 0; 1455 1456 switch (obj->id) { 1457 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1458 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port, 1459 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1460 break; 1461 case SWITCHDEV_OBJ_ID_PORT_MDB: 1462 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port, 1463 SWITCHDEV_OBJ_PORT_MDB(obj)); 1464 break; 1465 default: 1466 err = -EOPNOTSUPP; 1467 break; 1468 } 1469 1470 return err; 1471 } 1472 1473 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, 1474 u16 lag_id) 1475 { 1476 struct mlxsw_sp_port *mlxsw_sp_port; 1477 u64 max_lag_members; 1478 int i; 1479 1480 max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core, 1481 MAX_LAG_MEMBERS); 1482 for (i = 0; i < max_lag_members; i++) { 1483 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i); 1484 if (mlxsw_sp_port) 1485 return mlxsw_sp_port; 1486 } 1487 return NULL; 1488 } 1489 1490 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { 1491 .switchdev_port_attr_get = mlxsw_sp_port_attr_get, 1492 .switchdev_port_attr_set = mlxsw_sp_port_attr_set, 1493 .switchdev_port_obj_add = mlxsw_sp_port_obj_add, 1494 .switchdev_port_obj_del = mlxsw_sp_port_obj_del, 1495 }; 1496 1497 static int 1498 mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1499 struct mlxsw_sp_bridge_port *bridge_port, 1500 struct mlxsw_sp_port *mlxsw_sp_port) 1501 { 1502 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1503 1504 if (is_vlan_dev(bridge_port->dev)) 1505 return -EINVAL; 1506 1507 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1); 1508 if (WARN_ON(!mlxsw_sp_port_vlan)) 1509 return -EINVAL; 1510 1511 /* Let VLAN-aware bridge take care of its own VLANs */ 1512 mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan); 1513 1514 return 0; 1515 } 1516 1517 static void 1518 mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1519 struct mlxsw_sp_bridge_port *bridge_port, 1520 struct mlxsw_sp_port *mlxsw_sp_port) 1521 { 1522 mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1); 1523 /* Make sure untagged frames are allowed to ingress */ 1524 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1); 1525 } 1526 1527 static struct mlxsw_sp_fid * 1528 mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1529 u16 vid) 1530 { 1531 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1532 1533 return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid); 1534 } 1535 1536 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = { 1537 .port_join = mlxsw_sp_bridge_8021q_port_join, 1538 .port_leave = mlxsw_sp_bridge_8021q_port_leave, 1539 .fid_get = mlxsw_sp_bridge_8021q_fid_get, 1540 }; 1541 1542 static bool 1543 mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port, 1544 const struct net_device *br_dev) 1545 { 1546 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1547 1548 list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list, 1549 list) { 1550 if (mlxsw_sp_port_vlan->bridge_port && 1551 mlxsw_sp_port_vlan->bridge_port->bridge_device->dev == 1552 br_dev) 1553 return true; 1554 } 1555 1556 return false; 1557 } 1558 1559 static int 1560 mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device, 1561 struct mlxsw_sp_bridge_port *bridge_port, 1562 struct mlxsw_sp_port *mlxsw_sp_port) 1563 { 1564 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1565 u16 vid; 1566 1567 if (!is_vlan_dev(bridge_port->dev)) 1568 return -EINVAL; 1569 vid = vlan_dev_vlan_id(bridge_port->dev); 1570 1571 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1572 if (WARN_ON(!mlxsw_sp_port_vlan)) 1573 return -EINVAL; 1574 1575 if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) { 1576 netdev_err(mlxsw_sp_port->dev, "Can't bridge VLAN uppers of the same port\n"); 1577 return -EINVAL; 1578 } 1579 1580 /* Port is no longer usable as a router interface */ 1581 if (mlxsw_sp_port_vlan->fid) 1582 mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 1583 1584 return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port); 1585 } 1586 1587 static void 1588 mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device, 1589 struct mlxsw_sp_bridge_port *bridge_port, 1590 struct mlxsw_sp_port *mlxsw_sp_port) 1591 { 1592 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1593 u16 vid = vlan_dev_vlan_id(bridge_port->dev); 1594 1595 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 1596 if (WARN_ON(!mlxsw_sp_port_vlan)) 1597 return; 1598 1599 mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan); 1600 } 1601 1602 static struct mlxsw_sp_fid * 1603 mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device, 1604 u16 vid) 1605 { 1606 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev); 1607 1608 return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex); 1609 } 1610 1611 static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = { 1612 .port_join = mlxsw_sp_bridge_8021d_port_join, 1613 .port_leave = mlxsw_sp_bridge_8021d_port_leave, 1614 .fid_get = mlxsw_sp_bridge_8021d_fid_get, 1615 }; 1616 1617 int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port, 1618 struct net_device *brport_dev, 1619 struct net_device *br_dev) 1620 { 1621 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1622 struct mlxsw_sp_bridge_device *bridge_device; 1623 struct mlxsw_sp_bridge_port *bridge_port; 1624 int err; 1625 1626 bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev); 1627 if (IS_ERR(bridge_port)) 1628 return PTR_ERR(bridge_port); 1629 bridge_device = bridge_port->bridge_device; 1630 1631 err = bridge_device->ops->port_join(bridge_device, bridge_port, 1632 mlxsw_sp_port); 1633 if (err) 1634 goto err_port_join; 1635 1636 return 0; 1637 1638 err_port_join: 1639 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 1640 return err; 1641 } 1642 1643 void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, 1644 struct net_device *brport_dev, 1645 struct net_device *br_dev) 1646 { 1647 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 1648 struct mlxsw_sp_bridge_device *bridge_device; 1649 struct mlxsw_sp_bridge_port *bridge_port; 1650 1651 bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev); 1652 if (!bridge_device) 1653 return; 1654 bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev); 1655 if (!bridge_port) 1656 return; 1657 1658 bridge_device->ops->port_leave(bridge_device, bridge_port, 1659 mlxsw_sp_port); 1660 mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port); 1661 } 1662 1663 static void 1664 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type, 1665 const char *mac, u16 vid, 1666 struct net_device *dev) 1667 { 1668 struct switchdev_notifier_fdb_info info; 1669 1670 info.addr = mac; 1671 info.vid = vid; 1672 call_switchdev_notifiers(type, dev, &info.info); 1673 } 1674 1675 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp, 1676 char *sfn_pl, int rec_index, 1677 bool adding) 1678 { 1679 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1680 struct mlxsw_sp_bridge_device *bridge_device; 1681 struct mlxsw_sp_bridge_port *bridge_port; 1682 struct mlxsw_sp_port *mlxsw_sp_port; 1683 enum switchdev_notifier_type type; 1684 char mac[ETH_ALEN]; 1685 u8 local_port; 1686 u16 vid, fid; 1687 bool do_notification = true; 1688 int err; 1689 1690 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port); 1691 mlxsw_sp_port = mlxsw_sp->ports[local_port]; 1692 if (!mlxsw_sp_port) { 1693 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n"); 1694 goto just_remove; 1695 } 1696 1697 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 1698 if (!mlxsw_sp_port_vlan) { 1699 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 1700 goto just_remove; 1701 } 1702 1703 bridge_port = mlxsw_sp_port_vlan->bridge_port; 1704 if (!bridge_port) { 1705 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 1706 goto just_remove; 1707 } 1708 1709 bridge_device = bridge_port->bridge_device; 1710 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 1711 1712 do_fdb_op: 1713 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, 1714 adding, true); 1715 if (err) { 1716 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 1717 return; 1718 } 1719 1720 if (!do_notification) 1721 return; 1722 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 1723 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 1724 1725 return; 1726 1727 just_remove: 1728 adding = false; 1729 do_notification = false; 1730 goto do_fdb_op; 1731 } 1732 1733 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp, 1734 char *sfn_pl, int rec_index, 1735 bool adding) 1736 { 1737 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 1738 struct mlxsw_sp_bridge_device *bridge_device; 1739 struct mlxsw_sp_bridge_port *bridge_port; 1740 struct mlxsw_sp_port *mlxsw_sp_port; 1741 enum switchdev_notifier_type type; 1742 char mac[ETH_ALEN]; 1743 u16 lag_vid = 0; 1744 u16 lag_id; 1745 u16 vid, fid; 1746 bool do_notification = true; 1747 int err; 1748 1749 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id); 1750 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id); 1751 if (!mlxsw_sp_port) { 1752 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n"); 1753 goto just_remove; 1754 } 1755 1756 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid); 1757 if (!mlxsw_sp_port_vlan) { 1758 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n"); 1759 goto just_remove; 1760 } 1761 1762 bridge_port = mlxsw_sp_port_vlan->bridge_port; 1763 if (!bridge_port) { 1764 netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n"); 1765 goto just_remove; 1766 } 1767 1768 bridge_device = bridge_port->bridge_device; 1769 vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0; 1770 lag_vid = mlxsw_sp_port_vlan->vid; 1771 1772 do_fdb_op: 1773 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid, 1774 adding, true); 1775 if (err) { 1776 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n"); 1777 return; 1778 } 1779 1780 if (!do_notification) 1781 return; 1782 type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE; 1783 mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev); 1784 1785 return; 1786 1787 just_remove: 1788 adding = false; 1789 do_notification = false; 1790 goto do_fdb_op; 1791 } 1792 1793 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp, 1794 char *sfn_pl, int rec_index) 1795 { 1796 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) { 1797 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC: 1798 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 1799 rec_index, true); 1800 break; 1801 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC: 1802 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl, 1803 rec_index, false); 1804 break; 1805 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG: 1806 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 1807 rec_index, true); 1808 break; 1809 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG: 1810 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl, 1811 rec_index, false); 1812 break; 1813 } 1814 } 1815 1816 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp) 1817 { 1818 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 1819 1820 mlxsw_core_schedule_dw(&bridge->fdb_notify.dw, 1821 msecs_to_jiffies(bridge->fdb_notify.interval)); 1822 } 1823 1824 static void mlxsw_sp_fdb_notify_work(struct work_struct *work) 1825 { 1826 struct mlxsw_sp_bridge *bridge; 1827 struct mlxsw_sp *mlxsw_sp; 1828 char *sfn_pl; 1829 u8 num_rec; 1830 int i; 1831 int err; 1832 1833 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL); 1834 if (!sfn_pl) 1835 return; 1836 1837 bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work); 1838 mlxsw_sp = bridge->mlxsw_sp; 1839 1840 rtnl_lock(); 1841 mlxsw_reg_sfn_pack(sfn_pl); 1842 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl); 1843 if (err) { 1844 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n"); 1845 goto out; 1846 } 1847 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl); 1848 for (i = 0; i < num_rec; i++) 1849 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i); 1850 1851 out: 1852 rtnl_unlock(); 1853 kfree(sfn_pl); 1854 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 1855 } 1856 1857 struct mlxsw_sp_switchdev_event_work { 1858 struct work_struct work; 1859 struct switchdev_notifier_fdb_info fdb_info; 1860 struct net_device *dev; 1861 unsigned long event; 1862 }; 1863 1864 static void mlxsw_sp_switchdev_event_work(struct work_struct *work) 1865 { 1866 struct mlxsw_sp_switchdev_event_work *switchdev_work = 1867 container_of(work, struct mlxsw_sp_switchdev_event_work, work); 1868 struct net_device *dev = switchdev_work->dev; 1869 struct switchdev_notifier_fdb_info *fdb_info; 1870 struct mlxsw_sp_port *mlxsw_sp_port; 1871 int err; 1872 1873 rtnl_lock(); 1874 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev); 1875 if (!mlxsw_sp_port) 1876 goto out; 1877 1878 switch (switchdev_work->event) { 1879 case SWITCHDEV_FDB_ADD_TO_DEVICE: 1880 fdb_info = &switchdev_work->fdb_info; 1881 err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true); 1882 if (err) 1883 break; 1884 mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, 1885 fdb_info->addr, 1886 fdb_info->vid, dev); 1887 break; 1888 case SWITCHDEV_FDB_DEL_TO_DEVICE: 1889 fdb_info = &switchdev_work->fdb_info; 1890 mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false); 1891 break; 1892 } 1893 1894 out: 1895 rtnl_unlock(); 1896 kfree(switchdev_work->fdb_info.addr); 1897 kfree(switchdev_work); 1898 dev_put(dev); 1899 } 1900 1901 /* Called under rcu_read_lock() */ 1902 static int mlxsw_sp_switchdev_event(struct notifier_block *unused, 1903 unsigned long event, void *ptr) 1904 { 1905 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 1906 struct mlxsw_sp_switchdev_event_work *switchdev_work; 1907 struct switchdev_notifier_fdb_info *fdb_info = ptr; 1908 1909 if (!mlxsw_sp_port_dev_lower_find_rcu(dev)) 1910 return NOTIFY_DONE; 1911 1912 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 1913 if (!switchdev_work) 1914 return NOTIFY_BAD; 1915 1916 INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work); 1917 switchdev_work->dev = dev; 1918 switchdev_work->event = event; 1919 1920 switch (event) { 1921 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ 1922 case SWITCHDEV_FDB_DEL_TO_DEVICE: 1923 memcpy(&switchdev_work->fdb_info, ptr, 1924 sizeof(switchdev_work->fdb_info)); 1925 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 1926 if (!switchdev_work->fdb_info.addr) 1927 goto err_addr_alloc; 1928 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 1929 fdb_info->addr); 1930 /* Take a reference on the device. This can be either 1931 * upper device containig mlxsw_sp_port or just a 1932 * mlxsw_sp_port 1933 */ 1934 dev_hold(dev); 1935 break; 1936 default: 1937 kfree(switchdev_work); 1938 return NOTIFY_DONE; 1939 } 1940 1941 mlxsw_core_schedule_work(&switchdev_work->work); 1942 1943 return NOTIFY_DONE; 1944 1945 err_addr_alloc: 1946 kfree(switchdev_work); 1947 return NOTIFY_BAD; 1948 } 1949 1950 static struct notifier_block mlxsw_sp_switchdev_notifier = { 1951 .notifier_call = mlxsw_sp_switchdev_event, 1952 }; 1953 1954 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp) 1955 { 1956 struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge; 1957 int err; 1958 1959 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME); 1960 if (err) { 1961 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n"); 1962 return err; 1963 } 1964 1965 err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 1966 if (err) { 1967 dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n"); 1968 return err; 1969 } 1970 1971 INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work); 1972 bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL; 1973 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp); 1974 return 0; 1975 } 1976 1977 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp) 1978 { 1979 cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw); 1980 unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier); 1981 1982 } 1983 1984 static void mlxsw_sp_mids_fini(struct mlxsw_sp *mlxsw_sp) 1985 { 1986 struct mlxsw_sp_mid *mid, *tmp; 1987 1988 list_for_each_entry_safe(mid, tmp, &mlxsw_sp->bridge->mids_list, list) { 1989 list_del(&mid->list); 1990 clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap); 1991 kfree(mid); 1992 } 1993 } 1994 1995 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp) 1996 { 1997 struct mlxsw_sp_bridge *bridge; 1998 1999 bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL); 2000 if (!bridge) 2001 return -ENOMEM; 2002 mlxsw_sp->bridge = bridge; 2003 bridge->mlxsw_sp = mlxsw_sp; 2004 2005 INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list); 2006 INIT_LIST_HEAD(&mlxsw_sp->bridge->mids_list); 2007 2008 bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops; 2009 bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops; 2010 2011 return mlxsw_sp_fdb_init(mlxsw_sp); 2012 } 2013 2014 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) 2015 { 2016 mlxsw_sp_fdb_fini(mlxsw_sp); 2017 mlxsw_sp_mids_fini(mlxsw_sp); 2018 WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list)); 2019 kfree(mlxsw_sp->bridge); 2020 } 2021 2022 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) 2023 { 2024 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; 2025 } 2026 2027 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) 2028 { 2029 } 2030