| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Sysfs attributes of bridge |
| 4 | * Linux ethernet bridge |
| 5 | * |
| 6 | * Authors: |
| 7 | * Stephen Hemminger <shemminger@osdl.org> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/capability.h> |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/netdevice.h> |
| 13 | #include <linux/etherdevice.h> |
| 14 | #include <linux/if_bridge.h> |
| 15 | #include <linux/rtnetlink.h> |
| 16 | #include <linux/spinlock.h> |
| 17 | #include <linux/times.h> |
| 18 | #include <linux/sched/signal.h> |
| 19 | |
| 20 | #include "br_private.h" |
| 21 | |
| 22 | /* IMPORTANT: new bridge options must be added with netlink support only |
| 23 | * please do not add new sysfs entries |
| 24 | */ |
| 25 | |
| 26 | #define to_bridge(cd) ((struct net_bridge *)netdev_priv(to_net_dev(cd))) |
| 27 | |
| 28 | /* |
| 29 | * Common code for storing bridge parameters. |
| 30 | */ |
| 31 | static ssize_t store_bridge_parm(struct device *d, |
| 32 | const char *buf, size_t len, |
| 33 | int (*set)(struct net_bridge *br, unsigned long val, |
| 34 | struct netlink_ext_ack *extack)) |
| 35 | { |
| 36 | struct net_bridge *br = to_bridge(d); |
| 37 | struct netlink_ext_ack extack = {0}; |
| 38 | unsigned long val; |
| 39 | int err; |
| 40 | |
| 41 | if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN)) |
| 42 | return -EPERM; |
| 43 | |
| 44 | err = kstrtoul(buf, 0, &val); |
| 45 | if (err != 0) |
| 46 | return err; |
| 47 | |
| 48 | if (!rtnl_trylock()) |
| 49 | return restart_syscall(); |
| 50 | |
| 51 | err = (*set)(br, val, &extack); |
| 52 | if (!err) |
| 53 | netdev_state_change(br->dev); |
| 54 | if (extack._msg) { |
| 55 | if (err) |
| 56 | br_err(br, "%s\n", extack._msg); |
| 57 | else |
| 58 | br_warn(br, "%s\n", extack._msg); |
| 59 | } |
| 60 | rtnl_unlock(); |
| 61 | |
| 62 | return err ? err : len; |
| 63 | } |
| 64 | |
| 65 | |
| 66 | static ssize_t forward_delay_show(struct device *d, |
| 67 | struct device_attribute *attr, char *buf) |
| 68 | { |
| 69 | struct net_bridge *br = to_bridge(d); |
| 70 | return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay)); |
| 71 | } |
| 72 | |
| 73 | static int set_forward_delay(struct net_bridge *br, unsigned long val, |
| 74 | struct netlink_ext_ack *extack) |
| 75 | { |
| 76 | return br_set_forward_delay(br, val); |
| 77 | } |
| 78 | |
| 79 | static ssize_t forward_delay_store(struct device *d, |
| 80 | struct device_attribute *attr, |
| 81 | const char *buf, size_t len) |
| 82 | { |
| 83 | return store_bridge_parm(d, buf, len, set_forward_delay); |
| 84 | } |
| 85 | static DEVICE_ATTR_RW(forward_delay); |
| 86 | |
| 87 | static ssize_t hello_time_show(struct device *d, struct device_attribute *attr, |
| 88 | char *buf) |
| 89 | { |
| 90 | return sprintf(buf, "%lu\n", |
| 91 | jiffies_to_clock_t(to_bridge(d)->hello_time)); |
| 92 | } |
| 93 | |
| 94 | static int set_hello_time(struct net_bridge *br, unsigned long val, |
| 95 | struct netlink_ext_ack *extack) |
| 96 | { |
| 97 | return br_set_hello_time(br, val); |
| 98 | } |
| 99 | |
| 100 | static ssize_t hello_time_store(struct device *d, |
| 101 | struct device_attribute *attr, const char *buf, |
| 102 | size_t len) |
| 103 | { |
| 104 | return store_bridge_parm(d, buf, len, set_hello_time); |
| 105 | } |
| 106 | static DEVICE_ATTR_RW(hello_time); |
| 107 | |
| 108 | static ssize_t max_age_show(struct device *d, struct device_attribute *attr, |
| 109 | char *buf) |
| 110 | { |
| 111 | return sprintf(buf, "%lu\n", |
| 112 | jiffies_to_clock_t(to_bridge(d)->max_age)); |
| 113 | } |
| 114 | |
| 115 | static int set_max_age(struct net_bridge *br, unsigned long val, |
| 116 | struct netlink_ext_ack *extack) |
| 117 | { |
| 118 | return br_set_max_age(br, val); |
| 119 | } |
| 120 | |
| 121 | static ssize_t max_age_store(struct device *d, struct device_attribute *attr, |
| 122 | const char *buf, size_t len) |
| 123 | { |
| 124 | return store_bridge_parm(d, buf, len, set_max_age); |
| 125 | } |
| 126 | static DEVICE_ATTR_RW(max_age); |
| 127 | |
| 128 | static ssize_t ageing_time_show(struct device *d, |
| 129 | struct device_attribute *attr, char *buf) |
| 130 | { |
| 131 | struct net_bridge *br = to_bridge(d); |
| 132 | return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time)); |
| 133 | } |
| 134 | |
| 135 | static int set_ageing_time(struct net_bridge *br, unsigned long val, |
| 136 | struct netlink_ext_ack *extack) |
| 137 | { |
| 138 | return br_set_ageing_time(br, val); |
| 139 | } |
| 140 | |
| 141 | static ssize_t ageing_time_store(struct device *d, |
| 142 | struct device_attribute *attr, |
| 143 | const char *buf, size_t len) |
| 144 | { |
| 145 | return store_bridge_parm(d, buf, len, set_ageing_time); |
| 146 | } |
| 147 | static DEVICE_ATTR_RW(ageing_time); |
| 148 | |
| 149 | static ssize_t stp_state_show(struct device *d, |
| 150 | struct device_attribute *attr, char *buf) |
| 151 | { |
| 152 | struct net_bridge *br = to_bridge(d); |
| 153 | return sprintf(buf, "%d\n", br->stp_enabled); |
| 154 | } |
| 155 | |
| 156 | |
| 157 | static int set_stp_state(struct net_bridge *br, unsigned long val, |
| 158 | struct netlink_ext_ack *extack) |
| 159 | { |
| 160 | return br_stp_set_enabled(br, val, extack); |
| 161 | } |
| 162 | |
| 163 | static ssize_t stp_state_store(struct device *d, |
| 164 | struct device_attribute *attr, const char *buf, |
| 165 | size_t len) |
| 166 | { |
| 167 | return store_bridge_parm(d, buf, len, set_stp_state); |
| 168 | } |
| 169 | static DEVICE_ATTR_RW(stp_state); |
| 170 | |
| 171 | static ssize_t group_fwd_mask_show(struct device *d, |
| 172 | struct device_attribute *attr, |
| 173 | char *buf) |
| 174 | { |
| 175 | struct net_bridge *br = to_bridge(d); |
| 176 | return sprintf(buf, "%#x\n", br->group_fwd_mask); |
| 177 | } |
| 178 | |
| 179 | static int set_group_fwd_mask(struct net_bridge *br, unsigned long val, |
| 180 | struct netlink_ext_ack *extack) |
| 181 | { |
| 182 | if (val & BR_GROUPFWD_RESTRICTED) |
| 183 | return -EINVAL; |
| 184 | |
| 185 | br->group_fwd_mask = val; |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static ssize_t group_fwd_mask_store(struct device *d, |
| 191 | struct device_attribute *attr, |
| 192 | const char *buf, |
| 193 | size_t len) |
| 194 | { |
| 195 | return store_bridge_parm(d, buf, len, set_group_fwd_mask); |
| 196 | } |
| 197 | static DEVICE_ATTR_RW(group_fwd_mask); |
| 198 | |
| 199 | static ssize_t priority_show(struct device *d, struct device_attribute *attr, |
| 200 | char *buf) |
| 201 | { |
| 202 | struct net_bridge *br = to_bridge(d); |
| 203 | return sprintf(buf, "%d\n", |
| 204 | (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]); |
| 205 | } |
| 206 | |
| 207 | static int set_priority(struct net_bridge *br, unsigned long val, |
| 208 | struct netlink_ext_ack *extack) |
| 209 | { |
| 210 | br_stp_set_bridge_priority(br, (u16) val); |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | static ssize_t priority_store(struct device *d, struct device_attribute *attr, |
| 215 | const char *buf, size_t len) |
| 216 | { |
| 217 | return store_bridge_parm(d, buf, len, set_priority); |
| 218 | } |
| 219 | static DEVICE_ATTR_RW(priority); |
| 220 | |
| 221 | static ssize_t root_id_show(struct device *d, struct device_attribute *attr, |
| 222 | char *buf) |
| 223 | { |
| 224 | return br_show_bridge_id(buf, &to_bridge(d)->designated_root); |
| 225 | } |
| 226 | static DEVICE_ATTR_RO(root_id); |
| 227 | |
| 228 | static ssize_t bridge_id_show(struct device *d, struct device_attribute *attr, |
| 229 | char *buf) |
| 230 | { |
| 231 | return br_show_bridge_id(buf, &to_bridge(d)->bridge_id); |
| 232 | } |
| 233 | static DEVICE_ATTR_RO(bridge_id); |
| 234 | |
| 235 | static ssize_t root_port_show(struct device *d, struct device_attribute *attr, |
| 236 | char *buf) |
| 237 | { |
| 238 | return sprintf(buf, "%d\n", to_bridge(d)->root_port); |
| 239 | } |
| 240 | static DEVICE_ATTR_RO(root_port); |
| 241 | |
| 242 | static ssize_t root_path_cost_show(struct device *d, |
| 243 | struct device_attribute *attr, char *buf) |
| 244 | { |
| 245 | return sprintf(buf, "%d\n", to_bridge(d)->root_path_cost); |
| 246 | } |
| 247 | static DEVICE_ATTR_RO(root_path_cost); |
| 248 | |
| 249 | static ssize_t topology_change_show(struct device *d, |
| 250 | struct device_attribute *attr, char *buf) |
| 251 | { |
| 252 | return sprintf(buf, "%d\n", to_bridge(d)->topology_change); |
| 253 | } |
| 254 | static DEVICE_ATTR_RO(topology_change); |
| 255 | |
| 256 | static ssize_t topology_change_detected_show(struct device *d, |
| 257 | struct device_attribute *attr, |
| 258 | char *buf) |
| 259 | { |
| 260 | struct net_bridge *br = to_bridge(d); |
| 261 | return sprintf(buf, "%d\n", br->topology_change_detected); |
| 262 | } |
| 263 | static DEVICE_ATTR_RO(topology_change_detected); |
| 264 | |
| 265 | static ssize_t hello_timer_show(struct device *d, |
| 266 | struct device_attribute *attr, char *buf) |
| 267 | { |
| 268 | struct net_bridge *br = to_bridge(d); |
| 269 | return sprintf(buf, "%ld\n", br_timer_value(&br->hello_timer)); |
| 270 | } |
| 271 | static DEVICE_ATTR_RO(hello_timer); |
| 272 | |
| 273 | static ssize_t tcn_timer_show(struct device *d, struct device_attribute *attr, |
| 274 | char *buf) |
| 275 | { |
| 276 | struct net_bridge *br = to_bridge(d); |
| 277 | return sprintf(buf, "%ld\n", br_timer_value(&br->tcn_timer)); |
| 278 | } |
| 279 | static DEVICE_ATTR_RO(tcn_timer); |
| 280 | |
| 281 | static ssize_t topology_change_timer_show(struct device *d, |
| 282 | struct device_attribute *attr, |
| 283 | char *buf) |
| 284 | { |
| 285 | struct net_bridge *br = to_bridge(d); |
| 286 | return sprintf(buf, "%ld\n", br_timer_value(&br->topology_change_timer)); |
| 287 | } |
| 288 | static DEVICE_ATTR_RO(topology_change_timer); |
| 289 | |
| 290 | static ssize_t gc_timer_show(struct device *d, struct device_attribute *attr, |
| 291 | char *buf) |
| 292 | { |
| 293 | struct net_bridge *br = to_bridge(d); |
| 294 | return sprintf(buf, "%ld\n", br_timer_value(&br->gc_work.timer)); |
| 295 | } |
| 296 | static DEVICE_ATTR_RO(gc_timer); |
| 297 | |
| 298 | static ssize_t group_addr_show(struct device *d, |
| 299 | struct device_attribute *attr, char *buf) |
| 300 | { |
| 301 | struct net_bridge *br = to_bridge(d); |
| 302 | return sprintf(buf, "%pM\n", br->group_addr); |
| 303 | } |
| 304 | |
| 305 | static ssize_t group_addr_store(struct device *d, |
| 306 | struct device_attribute *attr, |
| 307 | const char *buf, size_t len) |
| 308 | { |
| 309 | struct net_bridge *br = to_bridge(d); |
| 310 | u8 new_addr[6]; |
| 311 | |
| 312 | if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN)) |
| 313 | return -EPERM; |
| 314 | |
| 315 | if (!mac_pton(buf, new_addr)) |
| 316 | return -EINVAL; |
| 317 | |
| 318 | if (!is_link_local_ether_addr(new_addr)) |
| 319 | return -EINVAL; |
| 320 | |
| 321 | if (new_addr[5] == 1 || /* 802.3x Pause address */ |
| 322 | new_addr[5] == 2 || /* 802.3ad Slow protocols */ |
| 323 | new_addr[5] == 3) /* 802.1X PAE address */ |
| 324 | return -EINVAL; |
| 325 | |
| 326 | if (!rtnl_trylock()) |
| 327 | return restart_syscall(); |
| 328 | |
| 329 | spin_lock_bh(&br->lock); |
| 330 | ether_addr_copy(br->group_addr, new_addr); |
| 331 | spin_unlock_bh(&br->lock); |
| 332 | |
| 333 | br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true); |
| 334 | br_recalculate_fwd_mask(br); |
| 335 | netdev_state_change(br->dev); |
| 336 | |
| 337 | rtnl_unlock(); |
| 338 | |
| 339 | return len; |
| 340 | } |
| 341 | |
| 342 | static DEVICE_ATTR_RW(group_addr); |
| 343 | |
| 344 | static int set_flush(struct net_bridge *br, unsigned long val, |
| 345 | struct netlink_ext_ack *extack) |
| 346 | { |
| 347 | struct net_bridge_fdb_flush_desc desc = { |
| 348 | .flags_mask = BIT(BR_FDB_STATIC) |
| 349 | }; |
| 350 | |
| 351 | br_fdb_flush(br, &desc); |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static ssize_t flush_store(struct device *d, |
| 356 | struct device_attribute *attr, |
| 357 | const char *buf, size_t len) |
| 358 | { |
| 359 | return store_bridge_parm(d, buf, len, set_flush); |
| 360 | } |
| 361 | static DEVICE_ATTR_WO(flush); |
| 362 | |
| 363 | static ssize_t no_linklocal_learn_show(struct device *d, |
| 364 | struct device_attribute *attr, |
| 365 | char *buf) |
| 366 | { |
| 367 | struct net_bridge *br = to_bridge(d); |
| 368 | return sprintf(buf, "%d\n", br_boolopt_get(br, BR_BOOLOPT_NO_LL_LEARN)); |
| 369 | } |
| 370 | |
| 371 | static int set_no_linklocal_learn(struct net_bridge *br, unsigned long val, |
| 372 | struct netlink_ext_ack *extack) |
| 373 | { |
| 374 | return br_boolopt_toggle(br, BR_BOOLOPT_NO_LL_LEARN, !!val, extack); |
| 375 | } |
| 376 | |
| 377 | static ssize_t no_linklocal_learn_store(struct device *d, |
| 378 | struct device_attribute *attr, |
| 379 | const char *buf, size_t len) |
| 380 | { |
| 381 | return store_bridge_parm(d, buf, len, set_no_linklocal_learn); |
| 382 | } |
| 383 | static DEVICE_ATTR_RW(no_linklocal_learn); |
| 384 | |
| 385 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 386 | static ssize_t multicast_router_show(struct device *d, |
| 387 | struct device_attribute *attr, char *buf) |
| 388 | { |
| 389 | struct net_bridge *br = to_bridge(d); |
| 390 | return sprintf(buf, "%d\n", br->multicast_ctx.multicast_router); |
| 391 | } |
| 392 | |
| 393 | static int set_multicast_router(struct net_bridge *br, unsigned long val, |
| 394 | struct netlink_ext_ack *extack) |
| 395 | { |
| 396 | return br_multicast_set_router(&br->multicast_ctx, val); |
| 397 | } |
| 398 | |
| 399 | static ssize_t multicast_router_store(struct device *d, |
| 400 | struct device_attribute *attr, |
| 401 | const char *buf, size_t len) |
| 402 | { |
| 403 | return store_bridge_parm(d, buf, len, set_multicast_router); |
| 404 | } |
| 405 | static DEVICE_ATTR_RW(multicast_router); |
| 406 | |
| 407 | static ssize_t multicast_snooping_show(struct device *d, |
| 408 | struct device_attribute *attr, |
| 409 | char *buf) |
| 410 | { |
| 411 | struct net_bridge *br = to_bridge(d); |
| 412 | return sprintf(buf, "%d\n", br_opt_get(br, BROPT_MULTICAST_ENABLED)); |
| 413 | } |
| 414 | |
| 415 | static ssize_t multicast_snooping_store(struct device *d, |
| 416 | struct device_attribute *attr, |
| 417 | const char *buf, size_t len) |
| 418 | { |
| 419 | return store_bridge_parm(d, buf, len, br_multicast_toggle); |
| 420 | } |
| 421 | static DEVICE_ATTR_RW(multicast_snooping); |
| 422 | |
| 423 | static ssize_t multicast_query_use_ifaddr_show(struct device *d, |
| 424 | struct device_attribute *attr, |
| 425 | char *buf) |
| 426 | { |
| 427 | struct net_bridge *br = to_bridge(d); |
| 428 | return sprintf(buf, "%d\n", |
| 429 | br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)); |
| 430 | } |
| 431 | |
| 432 | static int set_query_use_ifaddr(struct net_bridge *br, unsigned long val, |
| 433 | struct netlink_ext_ack *extack) |
| 434 | { |
| 435 | br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val); |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | static ssize_t |
| 440 | multicast_query_use_ifaddr_store(struct device *d, |
| 441 | struct device_attribute *attr, |
| 442 | const char *buf, size_t len) |
| 443 | { |
| 444 | return store_bridge_parm(d, buf, len, set_query_use_ifaddr); |
| 445 | } |
| 446 | static DEVICE_ATTR_RW(multicast_query_use_ifaddr); |
| 447 | |
| 448 | static ssize_t multicast_querier_show(struct device *d, |
| 449 | struct device_attribute *attr, |
| 450 | char *buf) |
| 451 | { |
| 452 | struct net_bridge *br = to_bridge(d); |
| 453 | return sprintf(buf, "%d\n", br->multicast_ctx.multicast_querier); |
| 454 | } |
| 455 | |
| 456 | static int set_multicast_querier(struct net_bridge *br, unsigned long val, |
| 457 | struct netlink_ext_ack *extack) |
| 458 | { |
| 459 | return br_multicast_set_querier(&br->multicast_ctx, val); |
| 460 | } |
| 461 | |
| 462 | static ssize_t multicast_querier_store(struct device *d, |
| 463 | struct device_attribute *attr, |
| 464 | const char *buf, size_t len) |
| 465 | { |
| 466 | return store_bridge_parm(d, buf, len, set_multicast_querier); |
| 467 | } |
| 468 | static DEVICE_ATTR_RW(multicast_querier); |
| 469 | |
| 470 | static ssize_t hash_elasticity_show(struct device *d, |
| 471 | struct device_attribute *attr, char *buf) |
| 472 | { |
| 473 | return sprintf(buf, "%u\n", RHT_ELASTICITY); |
| 474 | } |
| 475 | |
| 476 | static int set_elasticity(struct net_bridge *br, unsigned long val, |
| 477 | struct netlink_ext_ack *extack) |
| 478 | { |
| 479 | /* 16 is RHT_ELASTICITY */ |
| 480 | NL_SET_ERR_MSG_MOD(extack, |
| 481 | "the hash_elasticity option has been deprecated and is always 16"); |
| 482 | return 0; |
| 483 | } |
| 484 | |
| 485 | static ssize_t hash_elasticity_store(struct device *d, |
| 486 | struct device_attribute *attr, |
| 487 | const char *buf, size_t len) |
| 488 | { |
| 489 | return store_bridge_parm(d, buf, len, set_elasticity); |
| 490 | } |
| 491 | static DEVICE_ATTR_RW(hash_elasticity); |
| 492 | |
| 493 | static ssize_t hash_max_show(struct device *d, struct device_attribute *attr, |
| 494 | char *buf) |
| 495 | { |
| 496 | struct net_bridge *br = to_bridge(d); |
| 497 | return sprintf(buf, "%u\n", br->hash_max); |
| 498 | } |
| 499 | |
| 500 | static int set_hash_max(struct net_bridge *br, unsigned long val, |
| 501 | struct netlink_ext_ack *extack) |
| 502 | { |
| 503 | br->hash_max = val; |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static ssize_t hash_max_store(struct device *d, struct device_attribute *attr, |
| 508 | const char *buf, size_t len) |
| 509 | { |
| 510 | return store_bridge_parm(d, buf, len, set_hash_max); |
| 511 | } |
| 512 | static DEVICE_ATTR_RW(hash_max); |
| 513 | |
| 514 | static ssize_t multicast_igmp_version_show(struct device *d, |
| 515 | struct device_attribute *attr, |
| 516 | char *buf) |
| 517 | { |
| 518 | struct net_bridge *br = to_bridge(d); |
| 519 | |
| 520 | return sprintf(buf, "%u\n", br->multicast_ctx.multicast_igmp_version); |
| 521 | } |
| 522 | |
| 523 | static int set_multicast_igmp_version(struct net_bridge *br, unsigned long val, |
| 524 | struct netlink_ext_ack *extack) |
| 525 | { |
| 526 | return br_multicast_set_igmp_version(&br->multicast_ctx, val); |
| 527 | } |
| 528 | |
| 529 | static ssize_t multicast_igmp_version_store(struct device *d, |
| 530 | struct device_attribute *attr, |
| 531 | const char *buf, size_t len) |
| 532 | { |
| 533 | return store_bridge_parm(d, buf, len, set_multicast_igmp_version); |
| 534 | } |
| 535 | static DEVICE_ATTR_RW(multicast_igmp_version); |
| 536 | |
| 537 | static ssize_t multicast_last_member_count_show(struct device *d, |
| 538 | struct device_attribute *attr, |
| 539 | char *buf) |
| 540 | { |
| 541 | struct net_bridge *br = to_bridge(d); |
| 542 | return sprintf(buf, "%u\n", br->multicast_ctx.multicast_last_member_count); |
| 543 | } |
| 544 | |
| 545 | static int set_last_member_count(struct net_bridge *br, unsigned long val, |
| 546 | struct netlink_ext_ack *extack) |
| 547 | { |
| 548 | br->multicast_ctx.multicast_last_member_count = val; |
| 549 | return 0; |
| 550 | } |
| 551 | |
| 552 | static ssize_t multicast_last_member_count_store(struct device *d, |
| 553 | struct device_attribute *attr, |
| 554 | const char *buf, size_t len) |
| 555 | { |
| 556 | return store_bridge_parm(d, buf, len, set_last_member_count); |
| 557 | } |
| 558 | static DEVICE_ATTR_RW(multicast_last_member_count); |
| 559 | |
| 560 | static ssize_t multicast_startup_query_count_show( |
| 561 | struct device *d, struct device_attribute *attr, char *buf) |
| 562 | { |
| 563 | struct net_bridge *br = to_bridge(d); |
| 564 | return sprintf(buf, "%u\n", br->multicast_ctx.multicast_startup_query_count); |
| 565 | } |
| 566 | |
| 567 | static int set_startup_query_count(struct net_bridge *br, unsigned long val, |
| 568 | struct netlink_ext_ack *extack) |
| 569 | { |
| 570 | br->multicast_ctx.multicast_startup_query_count = val; |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | static ssize_t multicast_startup_query_count_store( |
| 575 | struct device *d, struct device_attribute *attr, const char *buf, |
| 576 | size_t len) |
| 577 | { |
| 578 | return store_bridge_parm(d, buf, len, set_startup_query_count); |
| 579 | } |
| 580 | static DEVICE_ATTR_RW(multicast_startup_query_count); |
| 581 | |
| 582 | static ssize_t multicast_last_member_interval_show( |
| 583 | struct device *d, struct device_attribute *attr, char *buf) |
| 584 | { |
| 585 | struct net_bridge *br = to_bridge(d); |
| 586 | return sprintf(buf, "%lu\n", |
| 587 | jiffies_to_clock_t(br->multicast_ctx.multicast_last_member_interval)); |
| 588 | } |
| 589 | |
| 590 | static int set_last_member_interval(struct net_bridge *br, unsigned long val, |
| 591 | struct netlink_ext_ack *extack) |
| 592 | { |
| 593 | br->multicast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val); |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static ssize_t multicast_last_member_interval_store( |
| 598 | struct device *d, struct device_attribute *attr, const char *buf, |
| 599 | size_t len) |
| 600 | { |
| 601 | return store_bridge_parm(d, buf, len, set_last_member_interval); |
| 602 | } |
| 603 | static DEVICE_ATTR_RW(multicast_last_member_interval); |
| 604 | |
| 605 | static ssize_t multicast_membership_interval_show( |
| 606 | struct device *d, struct device_attribute *attr, char *buf) |
| 607 | { |
| 608 | struct net_bridge *br = to_bridge(d); |
| 609 | return sprintf(buf, "%lu\n", |
| 610 | jiffies_to_clock_t(br->multicast_ctx.multicast_membership_interval)); |
| 611 | } |
| 612 | |
| 613 | static int set_membership_interval(struct net_bridge *br, unsigned long val, |
| 614 | struct netlink_ext_ack *extack) |
| 615 | { |
| 616 | br->multicast_ctx.multicast_membership_interval = clock_t_to_jiffies(val); |
| 617 | return 0; |
| 618 | } |
| 619 | |
| 620 | static ssize_t multicast_membership_interval_store( |
| 621 | struct device *d, struct device_attribute *attr, const char *buf, |
| 622 | size_t len) |
| 623 | { |
| 624 | return store_bridge_parm(d, buf, len, set_membership_interval); |
| 625 | } |
| 626 | static DEVICE_ATTR_RW(multicast_membership_interval); |
| 627 | |
| 628 | static ssize_t multicast_querier_interval_show(struct device *d, |
| 629 | struct device_attribute *attr, |
| 630 | char *buf) |
| 631 | { |
| 632 | struct net_bridge *br = to_bridge(d); |
| 633 | return sprintf(buf, "%lu\n", |
| 634 | jiffies_to_clock_t(br->multicast_ctx.multicast_querier_interval)); |
| 635 | } |
| 636 | |
| 637 | static int set_querier_interval(struct net_bridge *br, unsigned long val, |
| 638 | struct netlink_ext_ack *extack) |
| 639 | { |
| 640 | br->multicast_ctx.multicast_querier_interval = clock_t_to_jiffies(val); |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | static ssize_t multicast_querier_interval_store(struct device *d, |
| 645 | struct device_attribute *attr, |
| 646 | const char *buf, size_t len) |
| 647 | { |
| 648 | return store_bridge_parm(d, buf, len, set_querier_interval); |
| 649 | } |
| 650 | static DEVICE_ATTR_RW(multicast_querier_interval); |
| 651 | |
| 652 | static ssize_t multicast_query_interval_show(struct device *d, |
| 653 | struct device_attribute *attr, |
| 654 | char *buf) |
| 655 | { |
| 656 | struct net_bridge *br = to_bridge(d); |
| 657 | return sprintf(buf, "%lu\n", |
| 658 | jiffies_to_clock_t(br->multicast_ctx.multicast_query_interval)); |
| 659 | } |
| 660 | |
| 661 | static int set_query_interval(struct net_bridge *br, unsigned long val, |
| 662 | struct netlink_ext_ack *extack) |
| 663 | { |
| 664 | br_multicast_set_query_intvl(&br->multicast_ctx, val); |
| 665 | return 0; |
| 666 | } |
| 667 | |
| 668 | static ssize_t multicast_query_interval_store(struct device *d, |
| 669 | struct device_attribute *attr, |
| 670 | const char *buf, size_t len) |
| 671 | { |
| 672 | return store_bridge_parm(d, buf, len, set_query_interval); |
| 673 | } |
| 674 | static DEVICE_ATTR_RW(multicast_query_interval); |
| 675 | |
| 676 | static ssize_t multicast_query_response_interval_show( |
| 677 | struct device *d, struct device_attribute *attr, char *buf) |
| 678 | { |
| 679 | struct net_bridge *br = to_bridge(d); |
| 680 | return sprintf( |
| 681 | buf, "%lu\n", |
| 682 | jiffies_to_clock_t(br->multicast_ctx.multicast_query_response_interval)); |
| 683 | } |
| 684 | |
| 685 | static int set_query_response_interval(struct net_bridge *br, unsigned long val, |
| 686 | struct netlink_ext_ack *extack) |
| 687 | { |
| 688 | br->multicast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); |
| 689 | return 0; |
| 690 | } |
| 691 | |
| 692 | static ssize_t multicast_query_response_interval_store( |
| 693 | struct device *d, struct device_attribute *attr, const char *buf, |
| 694 | size_t len) |
| 695 | { |
| 696 | return store_bridge_parm(d, buf, len, set_query_response_interval); |
| 697 | } |
| 698 | static DEVICE_ATTR_RW(multicast_query_response_interval); |
| 699 | |
| 700 | static ssize_t multicast_startup_query_interval_show( |
| 701 | struct device *d, struct device_attribute *attr, char *buf) |
| 702 | { |
| 703 | struct net_bridge *br = to_bridge(d); |
| 704 | return sprintf( |
| 705 | buf, "%lu\n", |
| 706 | jiffies_to_clock_t(br->multicast_ctx.multicast_startup_query_interval)); |
| 707 | } |
| 708 | |
| 709 | static int set_startup_query_interval(struct net_bridge *br, unsigned long val, |
| 710 | struct netlink_ext_ack *extack) |
| 711 | { |
| 712 | br_multicast_set_startup_query_intvl(&br->multicast_ctx, val); |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | static ssize_t multicast_startup_query_interval_store( |
| 717 | struct device *d, struct device_attribute *attr, const char *buf, |
| 718 | size_t len) |
| 719 | { |
| 720 | return store_bridge_parm(d, buf, len, set_startup_query_interval); |
| 721 | } |
| 722 | static DEVICE_ATTR_RW(multicast_startup_query_interval); |
| 723 | |
| 724 | static ssize_t multicast_stats_enabled_show(struct device *d, |
| 725 | struct device_attribute *attr, |
| 726 | char *buf) |
| 727 | { |
| 728 | struct net_bridge *br = to_bridge(d); |
| 729 | |
| 730 | return sprintf(buf, "%d\n", |
| 731 | br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)); |
| 732 | } |
| 733 | |
| 734 | static int set_stats_enabled(struct net_bridge *br, unsigned long val, |
| 735 | struct netlink_ext_ack *extack) |
| 736 | { |
| 737 | br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!val); |
| 738 | return 0; |
| 739 | } |
| 740 | |
| 741 | static ssize_t multicast_stats_enabled_store(struct device *d, |
| 742 | struct device_attribute *attr, |
| 743 | const char *buf, |
| 744 | size_t len) |
| 745 | { |
| 746 | return store_bridge_parm(d, buf, len, set_stats_enabled); |
| 747 | } |
| 748 | static DEVICE_ATTR_RW(multicast_stats_enabled); |
| 749 | |
| 750 | #if IS_ENABLED(CONFIG_IPV6) |
| 751 | static ssize_t multicast_mld_version_show(struct device *d, |
| 752 | struct device_attribute *attr, |
| 753 | char *buf) |
| 754 | { |
| 755 | struct net_bridge *br = to_bridge(d); |
| 756 | |
| 757 | return sprintf(buf, "%u\n", br->multicast_ctx.multicast_mld_version); |
| 758 | } |
| 759 | |
| 760 | static int set_multicast_mld_version(struct net_bridge *br, unsigned long val, |
| 761 | struct netlink_ext_ack *extack) |
| 762 | { |
| 763 | return br_multicast_set_mld_version(&br->multicast_ctx, val); |
| 764 | } |
| 765 | |
| 766 | static ssize_t multicast_mld_version_store(struct device *d, |
| 767 | struct device_attribute *attr, |
| 768 | const char *buf, size_t len) |
| 769 | { |
| 770 | return store_bridge_parm(d, buf, len, set_multicast_mld_version); |
| 771 | } |
| 772 | static DEVICE_ATTR_RW(multicast_mld_version); |
| 773 | #endif |
| 774 | #endif |
| 775 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 776 | static ssize_t nf_call_iptables_show( |
| 777 | struct device *d, struct device_attribute *attr, char *buf) |
| 778 | { |
| 779 | struct net_bridge *br = to_bridge(d); |
| 780 | return sprintf(buf, "%u\n", br_opt_get(br, BROPT_NF_CALL_IPTABLES)); |
| 781 | } |
| 782 | |
| 783 | static int set_nf_call_iptables(struct net_bridge *br, unsigned long val, |
| 784 | struct netlink_ext_ack *extack) |
| 785 | { |
| 786 | br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val); |
| 787 | return 0; |
| 788 | } |
| 789 | |
| 790 | static ssize_t nf_call_iptables_store( |
| 791 | struct device *d, struct device_attribute *attr, const char *buf, |
| 792 | size_t len) |
| 793 | { |
| 794 | return store_bridge_parm(d, buf, len, set_nf_call_iptables); |
| 795 | } |
| 796 | static DEVICE_ATTR_RW(nf_call_iptables); |
| 797 | |
| 798 | static ssize_t nf_call_ip6tables_show( |
| 799 | struct device *d, struct device_attribute *attr, char *buf) |
| 800 | { |
| 801 | struct net_bridge *br = to_bridge(d); |
| 802 | return sprintf(buf, "%u\n", br_opt_get(br, BROPT_NF_CALL_IP6TABLES)); |
| 803 | } |
| 804 | |
| 805 | static int set_nf_call_ip6tables(struct net_bridge *br, unsigned long val, |
| 806 | struct netlink_ext_ack *extack) |
| 807 | { |
| 808 | br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val); |
| 809 | return 0; |
| 810 | } |
| 811 | |
| 812 | static ssize_t nf_call_ip6tables_store( |
| 813 | struct device *d, struct device_attribute *attr, const char *buf, |
| 814 | size_t len) |
| 815 | { |
| 816 | return store_bridge_parm(d, buf, len, set_nf_call_ip6tables); |
| 817 | } |
| 818 | static DEVICE_ATTR_RW(nf_call_ip6tables); |
| 819 | |
| 820 | static ssize_t nf_call_arptables_show( |
| 821 | struct device *d, struct device_attribute *attr, char *buf) |
| 822 | { |
| 823 | struct net_bridge *br = to_bridge(d); |
| 824 | return sprintf(buf, "%u\n", br_opt_get(br, BROPT_NF_CALL_ARPTABLES)); |
| 825 | } |
| 826 | |
| 827 | static int set_nf_call_arptables(struct net_bridge *br, unsigned long val, |
| 828 | struct netlink_ext_ack *extack) |
| 829 | { |
| 830 | br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val); |
| 831 | return 0; |
| 832 | } |
| 833 | |
| 834 | static ssize_t nf_call_arptables_store( |
| 835 | struct device *d, struct device_attribute *attr, const char *buf, |
| 836 | size_t len) |
| 837 | { |
| 838 | return store_bridge_parm(d, buf, len, set_nf_call_arptables); |
| 839 | } |
| 840 | static DEVICE_ATTR_RW(nf_call_arptables); |
| 841 | #endif |
| 842 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 843 | static ssize_t vlan_filtering_show(struct device *d, |
| 844 | struct device_attribute *attr, |
| 845 | char *buf) |
| 846 | { |
| 847 | struct net_bridge *br = to_bridge(d); |
| 848 | return sprintf(buf, "%d\n", br_opt_get(br, BROPT_VLAN_ENABLED)); |
| 849 | } |
| 850 | |
| 851 | static ssize_t vlan_filtering_store(struct device *d, |
| 852 | struct device_attribute *attr, |
| 853 | const char *buf, size_t len) |
| 854 | { |
| 855 | return store_bridge_parm(d, buf, len, br_vlan_filter_toggle); |
| 856 | } |
| 857 | static DEVICE_ATTR_RW(vlan_filtering); |
| 858 | |
| 859 | static ssize_t vlan_protocol_show(struct device *d, |
| 860 | struct device_attribute *attr, |
| 861 | char *buf) |
| 862 | { |
| 863 | struct net_bridge *br = to_bridge(d); |
| 864 | return sprintf(buf, "%#06x\n", ntohs(br->vlan_proto)); |
| 865 | } |
| 866 | |
| 867 | static ssize_t vlan_protocol_store(struct device *d, |
| 868 | struct device_attribute *attr, |
| 869 | const char *buf, size_t len) |
| 870 | { |
| 871 | return store_bridge_parm(d, buf, len, br_vlan_set_proto); |
| 872 | } |
| 873 | static DEVICE_ATTR_RW(vlan_protocol); |
| 874 | |
| 875 | static ssize_t default_pvid_show(struct device *d, |
| 876 | struct device_attribute *attr, |
| 877 | char *buf) |
| 878 | { |
| 879 | struct net_bridge *br = to_bridge(d); |
| 880 | return sprintf(buf, "%d\n", br->default_pvid); |
| 881 | } |
| 882 | |
| 883 | static ssize_t default_pvid_store(struct device *d, |
| 884 | struct device_attribute *attr, |
| 885 | const char *buf, size_t len) |
| 886 | { |
| 887 | return store_bridge_parm(d, buf, len, br_vlan_set_default_pvid); |
| 888 | } |
| 889 | static DEVICE_ATTR_RW(default_pvid); |
| 890 | |
| 891 | static ssize_t vlan_stats_enabled_show(struct device *d, |
| 892 | struct device_attribute *attr, |
| 893 | char *buf) |
| 894 | { |
| 895 | struct net_bridge *br = to_bridge(d); |
| 896 | return sprintf(buf, "%u\n", br_opt_get(br, BROPT_VLAN_STATS_ENABLED)); |
| 897 | } |
| 898 | |
| 899 | static int set_vlan_stats_enabled(struct net_bridge *br, unsigned long val, |
| 900 | struct netlink_ext_ack *extack) |
| 901 | { |
| 902 | return br_vlan_set_stats(br, val); |
| 903 | } |
| 904 | |
| 905 | static ssize_t vlan_stats_enabled_store(struct device *d, |
| 906 | struct device_attribute *attr, |
| 907 | const char *buf, size_t len) |
| 908 | { |
| 909 | return store_bridge_parm(d, buf, len, set_vlan_stats_enabled); |
| 910 | } |
| 911 | static DEVICE_ATTR_RW(vlan_stats_enabled); |
| 912 | |
| 913 | static ssize_t vlan_stats_per_port_show(struct device *d, |
| 914 | struct device_attribute *attr, |
| 915 | char *buf) |
| 916 | { |
| 917 | struct net_bridge *br = to_bridge(d); |
| 918 | return sprintf(buf, "%u\n", br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)); |
| 919 | } |
| 920 | |
| 921 | static int set_vlan_stats_per_port(struct net_bridge *br, unsigned long val, |
| 922 | struct netlink_ext_ack *extack) |
| 923 | { |
| 924 | return br_vlan_set_stats_per_port(br, val); |
| 925 | } |
| 926 | |
| 927 | static ssize_t vlan_stats_per_port_store(struct device *d, |
| 928 | struct device_attribute *attr, |
| 929 | const char *buf, size_t len) |
| 930 | { |
| 931 | return store_bridge_parm(d, buf, len, set_vlan_stats_per_port); |
| 932 | } |
| 933 | static DEVICE_ATTR_RW(vlan_stats_per_port); |
| 934 | #endif |
| 935 | |
| 936 | static struct attribute *bridge_attrs[] = { |
| 937 | &dev_attr_forward_delay.attr, |
| 938 | &dev_attr_hello_time.attr, |
| 939 | &dev_attr_max_age.attr, |
| 940 | &dev_attr_ageing_time.attr, |
| 941 | &dev_attr_stp_state.attr, |
| 942 | &dev_attr_group_fwd_mask.attr, |
| 943 | &dev_attr_priority.attr, |
| 944 | &dev_attr_bridge_id.attr, |
| 945 | &dev_attr_root_id.attr, |
| 946 | &dev_attr_root_path_cost.attr, |
| 947 | &dev_attr_root_port.attr, |
| 948 | &dev_attr_topology_change.attr, |
| 949 | &dev_attr_topology_change_detected.attr, |
| 950 | &dev_attr_hello_timer.attr, |
| 951 | &dev_attr_tcn_timer.attr, |
| 952 | &dev_attr_topology_change_timer.attr, |
| 953 | &dev_attr_gc_timer.attr, |
| 954 | &dev_attr_group_addr.attr, |
| 955 | &dev_attr_flush.attr, |
| 956 | &dev_attr_no_linklocal_learn.attr, |
| 957 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
| 958 | &dev_attr_multicast_router.attr, |
| 959 | &dev_attr_multicast_snooping.attr, |
| 960 | &dev_attr_multicast_querier.attr, |
| 961 | &dev_attr_multicast_query_use_ifaddr.attr, |
| 962 | &dev_attr_hash_elasticity.attr, |
| 963 | &dev_attr_hash_max.attr, |
| 964 | &dev_attr_multicast_last_member_count.attr, |
| 965 | &dev_attr_multicast_startup_query_count.attr, |
| 966 | &dev_attr_multicast_last_member_interval.attr, |
| 967 | &dev_attr_multicast_membership_interval.attr, |
| 968 | &dev_attr_multicast_querier_interval.attr, |
| 969 | &dev_attr_multicast_query_interval.attr, |
| 970 | &dev_attr_multicast_query_response_interval.attr, |
| 971 | &dev_attr_multicast_startup_query_interval.attr, |
| 972 | &dev_attr_multicast_stats_enabled.attr, |
| 973 | &dev_attr_multicast_igmp_version.attr, |
| 974 | #if IS_ENABLED(CONFIG_IPV6) |
| 975 | &dev_attr_multicast_mld_version.attr, |
| 976 | #endif |
| 977 | #endif |
| 978 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 979 | &dev_attr_nf_call_iptables.attr, |
| 980 | &dev_attr_nf_call_ip6tables.attr, |
| 981 | &dev_attr_nf_call_arptables.attr, |
| 982 | #endif |
| 983 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
| 984 | &dev_attr_vlan_filtering.attr, |
| 985 | &dev_attr_vlan_protocol.attr, |
| 986 | &dev_attr_default_pvid.attr, |
| 987 | &dev_attr_vlan_stats_enabled.attr, |
| 988 | &dev_attr_vlan_stats_per_port.attr, |
| 989 | #endif |
| 990 | NULL |
| 991 | }; |
| 992 | |
| 993 | static const struct attribute_group bridge_group = { |
| 994 | .name = SYSFS_BRIDGE_ATTR, |
| 995 | .attrs = bridge_attrs, |
| 996 | }; |
| 997 | |
| 998 | /* |
| 999 | * Export the forwarding information table as a binary file |
| 1000 | * The records are struct __fdb_entry. |
| 1001 | * |
| 1002 | * Returns the number of bytes read. |
| 1003 | */ |
| 1004 | static ssize_t brforward_read(struct file *filp, struct kobject *kobj, |
| 1005 | struct bin_attribute *bin_attr, |
| 1006 | char *buf, loff_t off, size_t count) |
| 1007 | { |
| 1008 | struct device *dev = kobj_to_dev(kobj); |
| 1009 | struct net_bridge *br = to_bridge(dev); |
| 1010 | int n; |
| 1011 | |
| 1012 | /* must read whole records */ |
| 1013 | if (off % sizeof(struct __fdb_entry) != 0) |
| 1014 | return -EINVAL; |
| 1015 | |
| 1016 | n = br_fdb_fillbuf(br, buf, |
| 1017 | count / sizeof(struct __fdb_entry), |
| 1018 | off / sizeof(struct __fdb_entry)); |
| 1019 | |
| 1020 | if (n > 0) |
| 1021 | n *= sizeof(struct __fdb_entry); |
| 1022 | |
| 1023 | return n; |
| 1024 | } |
| 1025 | |
| 1026 | static struct bin_attribute bridge_forward = { |
| 1027 | .attr = { .name = SYSFS_BRIDGE_FDB, |
| 1028 | .mode = 0444, }, |
| 1029 | .read = brforward_read, |
| 1030 | }; |
| 1031 | |
| 1032 | /* |
| 1033 | * Add entries in sysfs onto the existing network class device |
| 1034 | * for the bridge. |
| 1035 | * Adds a attribute group "bridge" containing tuning parameters. |
| 1036 | * Binary attribute containing the forward table |
| 1037 | * Sub directory to hold links to interfaces. |
| 1038 | * |
| 1039 | * Note: the ifobj exists only to be a subdirectory |
| 1040 | * to hold links. The ifobj exists in same data structure |
| 1041 | * as it's parent the bridge so reference counting works. |
| 1042 | */ |
| 1043 | int br_sysfs_addbr(struct net_device *dev) |
| 1044 | { |
| 1045 | struct kobject *brobj = &dev->dev.kobj; |
| 1046 | struct net_bridge *br = netdev_priv(dev); |
| 1047 | int err; |
| 1048 | |
| 1049 | err = sysfs_create_group(brobj, &bridge_group); |
| 1050 | if (err) { |
| 1051 | pr_info("%s: can't create group %s/%s\n", |
| 1052 | __func__, dev->name, bridge_group.name); |
| 1053 | goto out1; |
| 1054 | } |
| 1055 | |
| 1056 | err = sysfs_create_bin_file(brobj, &bridge_forward); |
| 1057 | if (err) { |
| 1058 | pr_info("%s: can't create attribute file %s/%s\n", |
| 1059 | __func__, dev->name, bridge_forward.attr.name); |
| 1060 | goto out2; |
| 1061 | } |
| 1062 | |
| 1063 | br->ifobj = kobject_create_and_add(SYSFS_BRIDGE_PORT_SUBDIR, brobj); |
| 1064 | if (!br->ifobj) { |
| 1065 | pr_info("%s: can't add kobject (directory) %s/%s\n", |
| 1066 | __func__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR); |
| 1067 | err = -ENOMEM; |
| 1068 | goto out3; |
| 1069 | } |
| 1070 | return 0; |
| 1071 | out3: |
| 1072 | sysfs_remove_bin_file(&dev->dev.kobj, &bridge_forward); |
| 1073 | out2: |
| 1074 | sysfs_remove_group(&dev->dev.kobj, &bridge_group); |
| 1075 | out1: |
| 1076 | return err; |
| 1077 | |
| 1078 | } |
| 1079 | |
| 1080 | void br_sysfs_delbr(struct net_device *dev) |
| 1081 | { |
| 1082 | struct kobject *kobj = &dev->dev.kobj; |
| 1083 | struct net_bridge *br = netdev_priv(dev); |
| 1084 | |
| 1085 | kobject_put(br->ifobj); |
| 1086 | sysfs_remove_bin_file(kobj, &bridge_forward); |
| 1087 | sysfs_remove_group(kobj, &bridge_group); |
| 1088 | } |