net/bridge/br_sysfs_br.c

   1 /*
   2  *      Sysfs attributes of bridge ports
   3  *      Linux ethernet bridge
   4  *
   5  *      Authors:
   6  *      Stephen Hemminger               <shemminger@osdl.org>
   7  *
   8  *      This program is free software; you can redistribute it and/or
   9  *      modify it under the terms of the GNU General Public License
  10  *      as published by the Free Software Foundation; either version
  11  *      2 of the License, or (at your option) any later version.
  12  */
  13
  14 #include <linux/capability.h>
  15 #include <linux/kernel.h>
  16 #include <linux/netdevice.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/if_bridge.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/times.h>
  22
  23 #include "br_private.h"
  24
  25 #define to_dev(obj)     container_of(obj, struct device, kobj)
  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 *, unsigned long))
  34 {
  35         struct net_bridge *br = to_bridge(d);
  36         char *endp;
  37         unsigned long val;
  38         int err;
  39
  40         if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
  41                 return -EPERM;
  42
  43         val = simple_strtoul(buf, &endp, 0);
  44         if (endp == buf)
  45                 return -EINVAL;
  46
  47         err = (*set)(br, val);
  48         return err ? err : len;
  49 }
  50
  51
  52 static ssize_t show_forward_delay(struct device *d,
  53                                   struct device_attribute *attr, char *buf)
  54 {
  55         struct net_bridge *br = to_bridge(d);
  56         return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay));
  57 }
  58
  59 static ssize_t store_forward_delay(struct device *d,
  60                                    struct device_attribute *attr,
  61                                    const char *buf, size_t len)
  62 {
  63         return store_bridge_parm(d, buf, len, br_set_forward_delay);
  64 }
  65 static DEVICE_ATTR(forward_delay, S_IRUGO | S_IWUSR,
  66                    show_forward_delay, store_forward_delay);
  67
  68 static ssize_t show_hello_time(struct device *d, struct device_attribute *attr,
  69                                char *buf)
  70 {
  71         return sprintf(buf, "%lu\n",
  72                        jiffies_to_clock_t(to_bridge(d)->hello_time));
  73 }
  74
  75 static ssize_t store_hello_time(struct device *d,
  76                                 struct device_attribute *attr, const char *buf,
  77                                 size_t len)
  78 {
  79         return store_bridge_parm(d, buf, len, br_set_hello_time);
  80 }
  81 static DEVICE_ATTR(hello_time, S_IRUGO | S_IWUSR, show_hello_time,
  82                    store_hello_time);
  83
  84 static ssize_t show_max_age(struct device *d, struct device_attribute *attr,
  85                             char *buf)
  86 {
  87         return sprintf(buf, "%lu\n",
  88                        jiffies_to_clock_t(to_bridge(d)->max_age));
  89 }
  90
  91 static ssize_t store_max_age(struct device *d, struct device_attribute *attr,
  92                              const char *buf, size_t len)
  93 {
  94         return store_bridge_parm(d, buf, len, br_set_max_age);
  95 }
  96 static DEVICE_ATTR(max_age, S_IRUGO | S_IWUSR, show_max_age, store_max_age);
  97
  98 static ssize_t show_ageing_time(struct device *d,
  99                                 struct device_attribute *attr, char *buf)
 100 {
 101         struct net_bridge *br = to_bridge(d);
 102         return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time));
 103 }
 104
 105 static int set_ageing_time(struct net_bridge *br, unsigned long val)
 106 {
 107         br->ageing_time = clock_t_to_jiffies(val);
 108         return 0;
 109 }
 110
 111 static ssize_t store_ageing_time(struct device *d,
 112                                  struct device_attribute *attr,
 113                                  const char *buf, size_t len)
 114 {
 115         return store_bridge_parm(d, buf, len, set_ageing_time);
 116 }
 117 static DEVICE_ATTR(ageing_time, S_IRUGO | S_IWUSR, show_ageing_time,
 118                    store_ageing_time);
 119
 120 static ssize_t show_stp_state(struct device *d,
 121                               struct device_attribute *attr, char *buf)
 122 {
 123         struct net_bridge *br = to_bridge(d);
 124         return sprintf(buf, "%d\n", br->stp_enabled);
 125 }
 126
 127
 128 static ssize_t store_stp_state(struct device *d,
 129                                struct device_attribute *attr, const char *buf,
 130                                size_t len)
 131 {
 132         struct net_bridge *br = to_bridge(d);
 133         char *endp;
 134         unsigned long val;
 135
 136         if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
 137                 return -EPERM;
 138
 139         val = simple_strtoul(buf, &endp, 0);
 140         if (endp == buf)
 141                 return -EINVAL;
 142
 143         if (!rtnl_trylock())
 144                 return restart_syscall();
 145         br_stp_set_enabled(br, val);
 146         rtnl_unlock();
 147
 148         return len;
 149 }
 150 static DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state,
 151                    store_stp_state);
 152
 153 static ssize_t show_group_fwd_mask(struct device *d,
 154                               struct device_attribute *attr, char *buf)
 155 {
 156         struct net_bridge *br = to_bridge(d);
 157         return sprintf(buf, "%#x\n", br->group_fwd_mask);
 158 }
 159
 160
 161 static ssize_t store_group_fwd_mask(struct device *d,
 162                                struct device_attribute *attr, const char *buf,
 163                                size_t len)
 164 {
 165         struct net_bridge *br = to_bridge(d);
 166         char *endp;
 167         unsigned long val;
 168
 169         if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
 170                 return -EPERM;
 171
 172         val = simple_strtoul(buf, &endp, 0);
 173         if (endp == buf)
 174                 return -EINVAL;
 175
 176         if (val & BR_GROUPFWD_RESTRICTED)
 177                 return -EINVAL;
 178
 179         br->group_fwd_mask = val;
 180
 181         return len;
 182 }
 183 static DEVICE_ATTR(group_fwd_mask, S_IRUGO | S_IWUSR, show_group_fwd_mask,
 184                    store_group_fwd_mask);
 185
 186 static ssize_t show_priority(struct device *d, struct device_attribute *attr,
 187                              char *buf)
 188 {
 189         struct net_bridge *br = to_bridge(d);
 190         return sprintf(buf, "%d\n",
 191                        (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]);
 192 }
 193
 194 static int set_priority(struct net_bridge *br, unsigned long val)
 195 {
 196         br_stp_set_bridge_priority(br, (u16) val);
 197         return 0;
 198 }
 199
 200 static ssize_t store_priority(struct device *d, struct device_attribute *attr,
 201                                const char *buf, size_t len)
 202 {
 203         return store_bridge_parm(d, buf, len, set_priority);
 204 }
 205 static DEVICE_ATTR(priority, S_IRUGO | S_IWUSR, show_priority, store_priority);
 206
 207 static ssize_t show_root_id(struct device *d, struct device_attribute *attr,
 208                             char *buf)
 209 {
 210         return br_show_bridge_id(buf, &to_bridge(d)->designated_root);
 211 }
 212 static DEVICE_ATTR(root_id, S_IRUGO, show_root_id, NULL);
 213
 214 static ssize_t show_bridge_id(struct device *d, struct device_attribute *attr,
 215                               char *buf)
 216 {
 217         return br_show_bridge_id(buf, &to_bridge(d)->bridge_id);
 218 }
 219 static DEVICE_ATTR(bridge_id, S_IRUGO, show_bridge_id, NULL);
 220
 221 static ssize_t show_root_port(struct device *d, struct device_attribute *attr,
 222                               char *buf)
 223 {
 224         return sprintf(buf, "%d\n", to_bridge(d)->root_port);
 225 }
 226 static DEVICE_ATTR(root_port, S_IRUGO, show_root_port, NULL);
 227
 228 static ssize_t show_root_path_cost(struct device *d,
 229                                    struct device_attribute *attr, char *buf)
 230 {
 231         return sprintf(buf, "%d\n", to_bridge(d)->root_path_cost);
 232 }
 233 static DEVICE_ATTR(root_path_cost, S_IRUGO, show_root_path_cost, NULL);
 234
 235 static ssize_t show_topology_change(struct device *d,
 236                                     struct device_attribute *attr, char *buf)
 237 {
 238         return sprintf(buf, "%d\n", to_bridge(d)->topology_change);
 239 }
 240 static DEVICE_ATTR(topology_change, S_IRUGO, show_topology_change, NULL);
 241
 242 static ssize_t show_topology_change_detected(struct device *d,
 243                                              struct device_attribute *attr,
 244                                              char *buf)
 245 {
 246         struct net_bridge *br = to_bridge(d);
 247         return sprintf(buf, "%d\n", br->topology_change_detected);
 248 }
 249 static DEVICE_ATTR(topology_change_detected, S_IRUGO,
 250                    show_topology_change_detected, NULL);
 251
 252 static ssize_t show_hello_timer(struct device *d,
 253                                 struct device_attribute *attr, char *buf)
 254 {
 255         struct net_bridge *br = to_bridge(d);
 256         return sprintf(buf, "%ld\n", br_timer_value(&br->hello_timer));
 257 }
 258 static DEVICE_ATTR(hello_timer, S_IRUGO, show_hello_timer, NULL);
 259
 260 static ssize_t show_tcn_timer(struct device *d, struct device_attribute *attr,
 261                               char *buf)
 262 {
 263         struct net_bridge *br = to_bridge(d);
 264         return sprintf(buf, "%ld\n", br_timer_value(&br->tcn_timer));
 265 }
 266 static DEVICE_ATTR(tcn_timer, S_IRUGO, show_tcn_timer, NULL);
 267
 268 static ssize_t show_topology_change_timer(struct device *d,
 269                                           struct device_attribute *attr,
 270                                           char *buf)
 271 {
 272         struct net_bridge *br = to_bridge(d);
 273         return sprintf(buf, "%ld\n", br_timer_value(&br->topology_change_timer));
 274 }
 275 static DEVICE_ATTR(topology_change_timer, S_IRUGO, show_topology_change_timer,
 276                    NULL);
 277
 278 static ssize_t show_gc_timer(struct device *d, struct device_attribute *attr,
 279                              char *buf)
 280 {
 281         struct net_bridge *br = to_bridge(d);
 282         return sprintf(buf, "%ld\n", br_timer_value(&br->gc_timer));
 283 }
 284 static DEVICE_ATTR(gc_timer, S_IRUGO, show_gc_timer, NULL);
 285
 286 static ssize_t show_group_addr(struct device *d,
 287                                struct device_attribute *attr, char *buf)
 288 {
 289         struct net_bridge *br = to_bridge(d);
 290         return sprintf(buf, "%x:%x:%x:%x:%x:%x\n",
 291                        br->group_addr[0], br->group_addr[1],
 292                        br->group_addr[2], br->group_addr[3],
 293                        br->group_addr[4], br->group_addr[5]);
 294 }
 295
 296 static ssize_t store_group_addr(struct device *d,
 297                                 struct device_attribute *attr,
 298                                 const char *buf, size_t len)
 299 {
 300         struct net_bridge *br = to_bridge(d);
 301         u8 new_addr[6];
 302         int i;
 303
 304         if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
 305                 return -EPERM;
 306
 307         if (sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
 308                    &new_addr[0], &new_addr[1], &new_addr[2],
 309                    &new_addr[3], &new_addr[4], &new_addr[5]) != 6)
 310                 return -EINVAL;
 311
 312         if (!is_link_local_ether_addr(new_addr))
 313                 return -EINVAL;
 314
 315         if (new_addr[5] == 1 ||         /* 802.3x Pause address */
 316             new_addr[5] == 2 ||         /* 802.3ad Slow protocols */
 317             new_addr[5] == 3)           /* 802.1X PAE address */
 318                 return -EINVAL;
 319
 320         spin_lock_bh(&br->lock);
 321         for (i = 0; i < 6; i++)
 322                 br->group_addr[i] = new_addr[i];
 323         spin_unlock_bh(&br->lock);
 324         return len;
 325 }
 326
 327 static DEVICE_ATTR(group_addr, S_IRUGO | S_IWUSR,
 328                    show_group_addr, store_group_addr);
 329
 330 static ssize_t store_flush(struct device *d,
 331                            struct device_attribute *attr,
 332                            const char *buf, size_t len)
 333 {
 334         struct net_bridge *br = to_bridge(d);
 335
 336         if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
 337                 return -EPERM;
 338
 339         br_fdb_flush(br);
 340         return len;
 341 }
 342 static DEVICE_ATTR(flush, S_IWUSR, NULL, store_flush);
 343
 344 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 345 static ssize_t show_multicast_router(struct device *d,
 346                                      struct device_attribute *attr, char *buf)
 347 {
 348         struct net_bridge *br = to_bridge(d);
 349         return sprintf(buf, "%d\n", br->multicast_router);
 350 }
 351
 352 static ssize_t store_multicast_router(struct device *d,
 353                                       struct device_attribute *attr,
 354                                       const char *buf, size_t len)
 355 {
 356         return store_bridge_parm(d, buf, len, br_multicast_set_router);
 357 }
 358 static DEVICE_ATTR(multicast_router, S_IRUGO | S_IWUSR, show_multicast_router,
 359                    store_multicast_router);
 360
 361 static ssize_t show_multicast_snooping(struct device *d,
 362                                        struct device_attribute *attr,
 363                                        char *buf)
 364 {
 365         struct net_bridge *br = to_bridge(d);
 366         return sprintf(buf, "%d\n", !br->multicast_disabled);
 367 }
 368
 369 static ssize_t store_multicast_snooping(struct device *d,
 370                                         struct device_attribute *attr,
 371                                         const char *buf, size_t len)
 372 {
 373         return store_bridge_parm(d, buf, len, br_multicast_toggle);
 374 }
 375 static DEVICE_ATTR(multicast_snooping, S_IRUGO | S_IWUSR,
 376                    show_multicast_snooping, store_multicast_snooping);
 377
 378 static ssize_t show_multicast_querier(struct device *d,
 379                                       struct device_attribute *attr,
 380                                       char *buf)
 381 {
 382         struct net_bridge *br = to_bridge(d);
 383         return sprintf(buf, "%d\n", br->multicast_querier);
 384 }
 385
 386 static ssize_t store_multicast_querier(struct device *d,
 387                                        struct device_attribute *attr,
 388                                        const char *buf, size_t len)
 389 {
 390         return store_bridge_parm(d, buf, len, br_multicast_set_querier);
 391 }
 392 static DEVICE_ATTR(multicast_querier, S_IRUGO | S_IWUSR,
 393                    show_multicast_querier, store_multicast_querier);
 394
 395 static ssize_t show_hash_elasticity(struct device *d,
 396                                     struct device_attribute *attr, char *buf)
 397 {
 398         struct net_bridge *br = to_bridge(d);
 399         return sprintf(buf, "%u\n", br->hash_elasticity);
 400 }
 401
 402 static int set_elasticity(struct net_bridge *br, unsigned long val)
 403 {
 404         br->hash_elasticity = val;
 405         return 0;
 406 }
 407
 408 static ssize_t store_hash_elasticity(struct device *d,
 409                                      struct device_attribute *attr,
 410                                      const char *buf, size_t len)
 411 {
 412         return store_bridge_parm(d, buf, len, set_elasticity);
 413 }
 414 static DEVICE_ATTR(hash_elasticity, S_IRUGO | S_IWUSR, show_hash_elasticity,
 415                    store_hash_elasticity);
 416
 417 static ssize_t show_hash_max(struct device *d, struct device_attribute *attr,
 418                              char *buf)
 419 {
 420         struct net_bridge *br = to_bridge(d);
 421         return sprintf(buf, "%u\n", br->hash_max);
 422 }
 423
 424 static ssize_t store_hash_max(struct device *d, struct device_attribute *attr,
 425                               const char *buf, size_t len)
 426 {
 427         return store_bridge_parm(d, buf, len, br_multicast_set_hash_max);
 428 }
 429 static DEVICE_ATTR(hash_max, S_IRUGO | S_IWUSR, show_hash_max,
 430                    store_hash_max);
 431
 432 static ssize_t show_multicast_last_member_count(struct device *d,
 433                                                 struct device_attribute *attr,
 434                                                 char *buf)
 435 {
 436         struct net_bridge *br = to_bridge(d);
 437         return sprintf(buf, "%u\n", br->multicast_last_member_count);
 438 }
 439
 440 static int set_last_member_count(struct net_bridge *br, unsigned long val)
 441 {
 442         br->multicast_last_member_count = val;
 443         return 0;
 444 }
 445
 446 static ssize_t store_multicast_last_member_count(struct device *d,
 447                                                  struct device_attribute *attr,
 448                                                  const char *buf, size_t len)
 449 {
 450         return store_bridge_parm(d, buf, len, set_last_member_count);
 451 }
 452 static DEVICE_ATTR(multicast_last_member_count, S_IRUGO | S_IWUSR,
 453                    show_multicast_last_member_count,
 454                    store_multicast_last_member_count);
 455
 456 static ssize_t show_multicast_startup_query_count(
 457         struct device *d, struct device_attribute *attr, char *buf)
 458 {
 459         struct net_bridge *br = to_bridge(d);
 460         return sprintf(buf, "%u\n", br->multicast_startup_query_count);
 461 }
 462
 463 static int set_startup_query_count(struct net_bridge *br, unsigned long val)
 464 {
 465         br->multicast_startup_query_count = val;
 466         return 0;
 467 }
 468
 469 static ssize_t store_multicast_startup_query_count(
 470         struct device *d, struct device_attribute *attr, const char *buf,
 471         size_t len)
 472 {
 473         return store_bridge_parm(d, buf, len, set_startup_query_count);
 474 }
 475 static DEVICE_ATTR(multicast_startup_query_count, S_IRUGO | S_IWUSR,
 476                    show_multicast_startup_query_count,
 477                    store_multicast_startup_query_count);
 478
 479 static ssize_t show_multicast_last_member_interval(
 480         struct device *d, struct device_attribute *attr, char *buf)
 481 {
 482         struct net_bridge *br = to_bridge(d);
 483         return sprintf(buf, "%lu\n",
 484                        jiffies_to_clock_t(br->multicast_last_member_interval));
 485 }
 486
 487 static int set_last_member_interval(struct net_bridge *br, unsigned long val)
 488 {
 489         br->multicast_last_member_interval = clock_t_to_jiffies(val);
 490         return 0;
 491 }
 492
 493 static ssize_t store_multicast_last_member_interval(
 494         struct device *d, struct device_attribute *attr, const char *buf,
 495         size_t len)
 496 {
 497         return store_bridge_parm(d, buf, len, set_last_member_interval);
 498 }
 499 static DEVICE_ATTR(multicast_last_member_interval, S_IRUGO | S_IWUSR,
 500                    show_multicast_last_member_interval,
 501                    store_multicast_last_member_interval);
 502
 503 static ssize_t show_multicast_membership_interval(
 504         struct device *d, struct device_attribute *attr, char *buf)
 505 {
 506         struct net_bridge *br = to_bridge(d);
 507         return sprintf(buf, "%lu\n",
 508                        jiffies_to_clock_t(br->multicast_membership_interval));
 509 }
 510
 511 static int set_membership_interval(struct net_bridge *br, unsigned long val)
 512 {
 513         br->multicast_membership_interval = clock_t_to_jiffies(val);
 514         return 0;
 515 }
 516
 517 static ssize_t store_multicast_membership_interval(
 518         struct device *d, struct device_attribute *attr, const char *buf,
 519         size_t len)
 520 {
 521         return store_bridge_parm(d, buf, len, set_membership_interval);
 522 }
 523 static DEVICE_ATTR(multicast_membership_interval, S_IRUGO | S_IWUSR,
 524                    show_multicast_membership_interval,
 525                    store_multicast_membership_interval);
 526
 527 static ssize_t show_multicast_querier_interval(struct device *d,
 528                                                struct device_attribute *attr,
 529                                                char *buf)
 530 {
 531         struct net_bridge *br = to_bridge(d);
 532         return sprintf(buf, "%lu\n",
 533                        jiffies_to_clock_t(br->multicast_querier_interval));
 534 }
 535
 536 static int set_querier_interval(struct net_bridge *br, unsigned long val)
 537 {
 538         br->multicast_querier_interval = clock_t_to_jiffies(val);
 539         return 0;
 540 }
 541
 542 static ssize_t store_multicast_querier_interval(struct device *d,
 543                                                 struct device_attribute *attr,
 544                                                 const char *buf, size_t len)
 545 {
 546         return store_bridge_parm(d, buf, len, set_querier_interval);
 547 }
 548 static DEVICE_ATTR(multicast_querier_interval, S_IRUGO | S_IWUSR,
 549                    show_multicast_querier_interval,
 550                    store_multicast_querier_interval);
 551
 552 static ssize_t show_multicast_query_interval(struct device *d,
 553                                              struct device_attribute *attr,
 554                                              char *buf)
 555 {
 556         struct net_bridge *br = to_bridge(d);
 557         return sprintf(buf, "%lu\n",
 558                        jiffies_to_clock_t(br->multicast_query_interval));
 559 }
 560
 561 static int set_query_interval(struct net_bridge *br, unsigned long val)
 562 {
 563         br->multicast_query_interval = clock_t_to_jiffies(val);
 564         return 0;
 565 }
 566
 567 static ssize_t store_multicast_query_interval(struct device *d,
 568                                               struct device_attribute *attr,
 569                                               const char *buf, size_t len)
 570 {
 571         return store_bridge_parm(d, buf, len, set_query_interval);
 572 }
 573 static DEVICE_ATTR(multicast_query_interval, S_IRUGO | S_IWUSR,
 574                    show_multicast_query_interval,
 575                    store_multicast_query_interval);
 576
 577 static ssize_t show_multicast_query_response_interval(
 578         struct device *d, struct device_attribute *attr, char *buf)
 579 {
 580         struct net_bridge *br = to_bridge(d);
 581         return sprintf(
 582                 buf, "%lu\n",
 583                 jiffies_to_clock_t(br->multicast_query_response_interval));
 584 }
 585
 586 static int set_query_response_interval(struct net_bridge *br, unsigned long val)
 587 {
 588         br->multicast_query_response_interval = clock_t_to_jiffies(val);
 589         return 0;
 590 }
 591
 592 static ssize_t store_multicast_query_response_interval(
 593         struct device *d, struct device_attribute *attr, const char *buf,
 594         size_t len)
 595 {
 596         return store_bridge_parm(d, buf, len, set_query_response_interval);
 597 }
 598 static DEVICE_ATTR(multicast_query_response_interval, S_IRUGO | S_IWUSR,
 599                    show_multicast_query_response_interval,
 600                    store_multicast_query_response_interval);
 601
 602 static ssize_t show_multicast_startup_query_interval(
 603         struct device *d, struct device_attribute *attr, char *buf)
 604 {
 605         struct net_bridge *br = to_bridge(d);
 606         return sprintf(
 607                 buf, "%lu\n",
 608                 jiffies_to_clock_t(br->multicast_startup_query_interval));
 609 }
 610
 611 static int set_startup_query_interval(struct net_bridge *br, unsigned long val)
 612 {
 613         br->multicast_startup_query_interval = clock_t_to_jiffies(val);
 614         return 0;
 615 }
 616
 617 static ssize_t store_multicast_startup_query_interval(
 618         struct device *d, struct device_attribute *attr, const char *buf,
 619         size_t len)
 620 {
 621         return store_bridge_parm(d, buf, len, set_startup_query_interval);
 622 }
 623 static DEVICE_ATTR(multicast_startup_query_interval, S_IRUGO | S_IWUSR,
 624                    show_multicast_startup_query_interval,
 625                    store_multicast_startup_query_interval);
 626 #endif
 627 #ifdef CONFIG_BRIDGE_NETFILTER
 628 static ssize_t show_nf_call_iptables(
 629         struct device *d, struct device_attribute *attr, char *buf)
 630 {
 631         struct net_bridge *br = to_bridge(d);
 632         return sprintf(buf, "%u\n", br->nf_call_iptables);
 633 }
 634
 635 static int set_nf_call_iptables(struct net_bridge *br, unsigned long val)
 636 {
 637         br->nf_call_iptables = val ? true : false;
 638         return 0;
 639 }
 640
 641 static ssize_t store_nf_call_iptables(
 642         struct device *d, struct device_attribute *attr, const char *buf,
 643         size_t len)
 644 {
 645         return store_bridge_parm(d, buf, len, set_nf_call_iptables);
 646 }
 647 static DEVICE_ATTR(nf_call_iptables, S_IRUGO | S_IWUSR,
 648                    show_nf_call_iptables, store_nf_call_iptables);
 649
 650 static ssize_t show_nf_call_ip6tables(
 651         struct device *d, struct device_attribute *attr, char *buf)
 652 {
 653         struct net_bridge *br = to_bridge(d);
 654         return sprintf(buf, "%u\n", br->nf_call_ip6tables);
 655 }
 656
 657 static int set_nf_call_ip6tables(struct net_bridge *br, unsigned long val)
 658 {
 659         br->nf_call_ip6tables = val ? true : false;
 660         return 0;
 661 }
 662
 663 static ssize_t store_nf_call_ip6tables(
 664         struct device *d, struct device_attribute *attr, const char *buf,
 665         size_t len)
 666 {
 667         return store_bridge_parm(d, buf, len, set_nf_call_ip6tables);
 668 }
 669 static DEVICE_ATTR(nf_call_ip6tables, S_IRUGO | S_IWUSR,
 670                    show_nf_call_ip6tables, store_nf_call_ip6tables);
 671
 672 static ssize_t show_nf_call_arptables(
 673         struct device *d, struct device_attribute *attr, char *buf)
 674 {
 675         struct net_bridge *br = to_bridge(d);
 676         return sprintf(buf, "%u\n", br->nf_call_arptables);
 677 }
 678
 679 static int set_nf_call_arptables(struct net_bridge *br, unsigned long val)
 680 {
 681         br->nf_call_arptables = val ? true : false;
 682         return 0;
 683 }
 684
 685 static ssize_t store_nf_call_arptables(
 686         struct device *d, struct device_attribute *attr, const char *buf,
 687         size_t len)
 688 {
 689         return store_bridge_parm(d, buf, len, set_nf_call_arptables);
 690 }
 691 static DEVICE_ATTR(nf_call_arptables, S_IRUGO | S_IWUSR,
 692                    show_nf_call_arptables, store_nf_call_arptables);
 693 #endif
 694 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 695 static ssize_t show_vlan_filtering(struct device *d,
 696                                    struct device_attribute *attr,
 697                                    char *buf)
 698 {
 699         struct net_bridge *br = to_bridge(d);
 700         return sprintf(buf, "%d\n", br->vlan_enabled);
 701 }
 702
 703 static ssize_t store_vlan_filtering(struct device *d,
 704                                     struct device_attribute *attr,
 705                                     const char *buf, size_t len)
 706 {
 707         return store_bridge_parm(d, buf, len, br_vlan_filter_toggle);
 708 }
 709 static DEVICE_ATTR(vlan_filtering, S_IRUGO | S_IWUSR,
 710                    show_vlan_filtering, store_vlan_filtering);
 711 #endif
 712
 713 static struct attribute *bridge_attrs[] = {
 714         &dev_attr_forward_delay.attr,
 715         &dev_attr_hello_time.attr,
 716         &dev_attr_max_age.attr,
 717         &dev_attr_ageing_time.attr,
 718         &dev_attr_stp_state.attr,
 719         &dev_attr_group_fwd_mask.attr,
 720         &dev_attr_priority.attr,
 721         &dev_attr_bridge_id.attr,
 722         &dev_attr_root_id.attr,
 723         &dev_attr_root_path_cost.attr,
 724         &dev_attr_root_port.attr,
 725         &dev_attr_topology_change.attr,
 726         &dev_attr_topology_change_detected.attr,
 727         &dev_attr_hello_timer.attr,
 728         &dev_attr_tcn_timer.attr,
 729         &dev_attr_topology_change_timer.attr,
 730         &dev_attr_gc_timer.attr,
 731         &dev_attr_group_addr.attr,
 732         &dev_attr_flush.attr,
 733 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 734         &dev_attr_multicast_router.attr,
 735         &dev_attr_multicast_snooping.attr,
 736         &dev_attr_multicast_querier.attr,
 737         &dev_attr_hash_elasticity.attr,
 738         &dev_attr_hash_max.attr,
 739         &dev_attr_multicast_last_member_count.attr,
 740         &dev_attr_multicast_startup_query_count.attr,
 741         &dev_attr_multicast_last_member_interval.attr,
 742         &dev_attr_multicast_membership_interval.attr,
 743         &dev_attr_multicast_querier_interval.attr,
 744         &dev_attr_multicast_query_interval.attr,
 745         &dev_attr_multicast_query_response_interval.attr,
 746         &dev_attr_multicast_startup_query_interval.attr,
 747 #endif
 748 #ifdef CONFIG_BRIDGE_NETFILTER
 749         &dev_attr_nf_call_iptables.attr,
 750         &dev_attr_nf_call_ip6tables.attr,
 751         &dev_attr_nf_call_arptables.attr,
 752 #endif
 753 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 754         &dev_attr_vlan_filtering.attr,
 755 #endif
 756         NULL
 757 };
 758
 759 static struct attribute_group bridge_group = {
 760         .name = SYSFS_BRIDGE_ATTR,
 761         .attrs = bridge_attrs,
 762 };
 763
 764 /*
 765  * Export the forwarding information table as a binary file
 766  * The records are struct __fdb_entry.
 767  *
 768  * Returns the number of bytes read.
 769  */
 770 static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
 771                               struct bin_attribute *bin_attr,
 772                               char *buf, loff_t off, size_t count)
 773 {
 774         struct device *dev = to_dev(kobj);
 775         struct net_bridge *br = to_bridge(dev);
 776         int n;
 777
 778         /* must read whole records */
 779         if (off % sizeof(struct __fdb_entry) != 0)
 780                 return -EINVAL;
 781
 782         n =  br_fdb_fillbuf(br, buf,
 783                             count / sizeof(struct __fdb_entry),
 784                             off / sizeof(struct __fdb_entry));
 785
 786         if (n > 0)
 787                 n *= sizeof(struct __fdb_entry);
 788
 789         return n;
 790 }
 791
 792 static struct bin_attribute bridge_forward = {
 793         .attr = { .name = SYSFS_BRIDGE_FDB,
 794                   .mode = S_IRUGO, },
 795         .read = brforward_read,
 796 };
 797
 798 /*
 799  * Add entries in sysfs onto the existing network class device
 800  * for the bridge.
 801  *   Adds a attribute group "bridge" containing tuning parameters.
 802  *   Binary attribute containing the forward table
 803  *   Sub directory to hold links to interfaces.
 804  *
 805  * Note: the ifobj exists only to be a subdirectory
 806  *   to hold links.  The ifobj exists in same data structure
 807  *   as it's parent the bridge so reference counting works.
 808  */
 809 int br_sysfs_addbr(struct net_device *dev)
 810 {
 811         struct kobject *brobj = &dev->dev.kobj;
 812         struct net_bridge *br = netdev_priv(dev);
 813         int err;
 814
 815         err = sysfs_create_group(brobj, &bridge_group);
 816         if (err) {
 817                 pr_info("%s: can't create group %s/%s\n",
 818                         __func__, dev->name, bridge_group.name);
 819                 goto out1;
 820         }
 821
 822         err = sysfs_create_bin_file(brobj, &bridge_forward);
 823         if (err) {
 824                 pr_info("%s: can't create attribute file %s/%s\n",
 825                         __func__, dev->name, bridge_forward.attr.name);
 826                 goto out2;
 827         }
 828
 829         br->ifobj = kobject_create_and_add(SYSFS_BRIDGE_PORT_SUBDIR, brobj);
 830         if (!br->ifobj) {
 831                 pr_info("%s: can't add kobject (directory) %s/%s\n",
 832                         __func__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR);
 833                 goto out3;
 834         }
 835         return 0;
 836  out3:
 837         sysfs_remove_bin_file(&dev->dev.kobj, &bridge_forward);
 838  out2:
 839         sysfs_remove_group(&dev->dev.kobj, &bridge_group);
 840  out1:
 841         return err;
 842
 843 }
 844
 845 void br_sysfs_delbr(struct net_device *dev)
 846 {
 847         struct kobject *kobj = &dev->dev.kobj;
 848         struct net_bridge *br = netdev_priv(dev);
 849
 850         kobject_put(br->ifobj);
 851         sysfs_remove_bin_file(kobj, &bridge_forward);
 852         sysfs_remove_group(kobj, &bridge_group);
 853 }