net/bridge/br_sysfs_br.c

   1 /*
   2  *      Sysfs attributes of bridge
   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_query_use_ifaddr(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_query_use_ifaddr);
 384 }
 385
 386 static int set_query_use_ifaddr(struct net_bridge *br, unsigned long val)
 387 {
 388         br->multicast_query_use_ifaddr = !!val;
 389         return 0;
 390 }
 391
 392 static ssize_t
 393 store_multicast_query_use_ifaddr(struct device *d,
 394                                  struct device_attribute *attr,
 395                                  const char *buf, size_t len)
 396 {
 397         return store_bridge_parm(d, buf, len, set_query_use_ifaddr);
 398 }
 399 static DEVICE_ATTR(multicast_query_use_ifaddr, S_IRUGO | S_IWUSR,
 400                    show_multicast_query_use_ifaddr,
 401                    store_multicast_query_use_ifaddr);
 402
 403 static ssize_t show_multicast_querier(struct device *d,
 404                                       struct device_attribute *attr,
 405                                       char *buf)
 406 {
 407         struct net_bridge *br = to_bridge(d);
 408         return sprintf(buf, "%d\n", br->multicast_querier);
 409 }
 410
 411 static ssize_t store_multicast_querier(struct device *d,
 412                                        struct device_attribute *attr,
 413                                        const char *buf, size_t len)
 414 {
 415         return store_bridge_parm(d, buf, len, br_multicast_set_querier);
 416 }
 417 static DEVICE_ATTR(multicast_querier, S_IRUGO | S_IWUSR,
 418                    show_multicast_querier, store_multicast_querier);
 419
 420 static ssize_t show_hash_elasticity(struct device *d,
 421                                     struct device_attribute *attr, char *buf)
 422 {
 423         struct net_bridge *br = to_bridge(d);
 424         return sprintf(buf, "%u\n", br->hash_elasticity);
 425 }
 426
 427 static int set_elasticity(struct net_bridge *br, unsigned long val)
 428 {
 429         br->hash_elasticity = val;
 430         return 0;
 431 }
 432
 433 static ssize_t store_hash_elasticity(struct device *d,
 434                                      struct device_attribute *attr,
 435                                      const char *buf, size_t len)
 436 {
 437         return store_bridge_parm(d, buf, len, set_elasticity);
 438 }
 439 static DEVICE_ATTR(hash_elasticity, S_IRUGO | S_IWUSR, show_hash_elasticity,
 440                    store_hash_elasticity);
 441
 442 static ssize_t show_hash_max(struct device *d, struct device_attribute *attr,
 443                              char *buf)
 444 {
 445         struct net_bridge *br = to_bridge(d);
 446         return sprintf(buf, "%u\n", br->hash_max);
 447 }
 448
 449 static ssize_t store_hash_max(struct device *d, struct device_attribute *attr,
 450                               const char *buf, size_t len)
 451 {
 452         return store_bridge_parm(d, buf, len, br_multicast_set_hash_max);
 453 }
 454 static DEVICE_ATTR(hash_max, S_IRUGO | S_IWUSR, show_hash_max,
 455                    store_hash_max);
 456
 457 static ssize_t show_multicast_last_member_count(struct device *d,
 458                                                 struct device_attribute *attr,
 459                                                 char *buf)
 460 {
 461         struct net_bridge *br = to_bridge(d);
 462         return sprintf(buf, "%u\n", br->multicast_last_member_count);
 463 }
 464
 465 static int set_last_member_count(struct net_bridge *br, unsigned long val)
 466 {
 467         br->multicast_last_member_count = val;
 468         return 0;
 469 }
 470
 471 static ssize_t store_multicast_last_member_count(struct device *d,
 472                                                  struct device_attribute *attr,
 473                                                  const char *buf, size_t len)
 474 {
 475         return store_bridge_parm(d, buf, len, set_last_member_count);
 476 }
 477 static DEVICE_ATTR(multicast_last_member_count, S_IRUGO | S_IWUSR,
 478                    show_multicast_last_member_count,
 479                    store_multicast_last_member_count);
 480
 481 static ssize_t show_multicast_startup_query_count(
 482         struct device *d, struct device_attribute *attr, char *buf)
 483 {
 484         struct net_bridge *br = to_bridge(d);
 485         return sprintf(buf, "%u\n", br->multicast_startup_query_count);
 486 }
 487
 488 static int set_startup_query_count(struct net_bridge *br, unsigned long val)
 489 {
 490         br->multicast_startup_query_count = val;
 491         return 0;
 492 }
 493
 494 static ssize_t store_multicast_startup_query_count(
 495         struct device *d, struct device_attribute *attr, const char *buf,
 496         size_t len)
 497 {
 498         return store_bridge_parm(d, buf, len, set_startup_query_count);
 499 }
 500 static DEVICE_ATTR(multicast_startup_query_count, S_IRUGO | S_IWUSR,
 501                    show_multicast_startup_query_count,
 502                    store_multicast_startup_query_count);
 503
 504 static ssize_t show_multicast_last_member_interval(
 505         struct device *d, struct device_attribute *attr, char *buf)
 506 {
 507         struct net_bridge *br = to_bridge(d);
 508         return sprintf(buf, "%lu\n",
 509                        jiffies_to_clock_t(br->multicast_last_member_interval));
 510 }
 511
 512 static int set_last_member_interval(struct net_bridge *br, unsigned long val)
 513 {
 514         br->multicast_last_member_interval = clock_t_to_jiffies(val);
 515         return 0;
 516 }
 517
 518 static ssize_t store_multicast_last_member_interval(
 519         struct device *d, struct device_attribute *attr, const char *buf,
 520         size_t len)
 521 {
 522         return store_bridge_parm(d, buf, len, set_last_member_interval);
 523 }
 524 static DEVICE_ATTR(multicast_last_member_interval, S_IRUGO | S_IWUSR,
 525                    show_multicast_last_member_interval,
 526                    store_multicast_last_member_interval);
 527
 528 static ssize_t show_multicast_membership_interval(
 529         struct device *d, struct device_attribute *attr, char *buf)
 530 {
 531         struct net_bridge *br = to_bridge(d);
 532         return sprintf(buf, "%lu\n",
 533                        jiffies_to_clock_t(br->multicast_membership_interval));
 534 }
 535
 536 static int set_membership_interval(struct net_bridge *br, unsigned long val)
 537 {
 538         br->multicast_membership_interval = clock_t_to_jiffies(val);
 539         return 0;
 540 }
 541
 542 static ssize_t store_multicast_membership_interval(
 543         struct device *d, struct device_attribute *attr, const char *buf,
 544         size_t len)
 545 {
 546         return store_bridge_parm(d, buf, len, set_membership_interval);
 547 }
 548 static DEVICE_ATTR(multicast_membership_interval, S_IRUGO | S_IWUSR,
 549                    show_multicast_membership_interval,
 550                    store_multicast_membership_interval);
 551
 552 static ssize_t show_multicast_querier_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_querier_interval));
 559 }
 560
 561 static int set_querier_interval(struct net_bridge *br, unsigned long val)
 562 {
 563         br->multicast_querier_interval = clock_t_to_jiffies(val);
 564         return 0;
 565 }
 566
 567 static ssize_t store_multicast_querier_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_querier_interval);
 572 }
 573 static DEVICE_ATTR(multicast_querier_interval, S_IRUGO | S_IWUSR,
 574                    show_multicast_querier_interval,
 575                    store_multicast_querier_interval);
 576
 577 static ssize_t show_multicast_query_interval(struct device *d,
 578                                              struct device_attribute *attr,
 579                                              char *buf)
 580 {
 581         struct net_bridge *br = to_bridge(d);
 582         return sprintf(buf, "%lu\n",
 583                        jiffies_to_clock_t(br->multicast_query_interval));
 584 }
 585
 586 static int set_query_interval(struct net_bridge *br, unsigned long val)
 587 {
 588         br->multicast_query_interval = clock_t_to_jiffies(val);
 589         return 0;
 590 }
 591
 592 static ssize_t store_multicast_query_interval(struct device *d,
 593                                               struct device_attribute *attr,
 594                                               const char *buf, size_t len)
 595 {
 596         return store_bridge_parm(d, buf, len, set_query_interval);
 597 }
 598 static DEVICE_ATTR(multicast_query_interval, S_IRUGO | S_IWUSR,
 599                    show_multicast_query_interval,
 600                    store_multicast_query_interval);
 601
 602 static ssize_t show_multicast_query_response_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_query_response_interval));
 609 }
 610
 611 static int set_query_response_interval(struct net_bridge *br, unsigned long val)
 612 {
 613         br->multicast_query_response_interval = clock_t_to_jiffies(val);
 614         return 0;
 615 }
 616
 617 static ssize_t store_multicast_query_response_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_query_response_interval);
 622 }
 623 static DEVICE_ATTR(multicast_query_response_interval, S_IRUGO | S_IWUSR,
 624                    show_multicast_query_response_interval,
 625                    store_multicast_query_response_interval);
 626
 627 static ssize_t show_multicast_startup_query_interval(
 628         struct device *d, struct device_attribute *attr, char *buf)
 629 {
 630         struct net_bridge *br = to_bridge(d);
 631         return sprintf(
 632                 buf, "%lu\n",
 633                 jiffies_to_clock_t(br->multicast_startup_query_interval));
 634 }
 635
 636 static int set_startup_query_interval(struct net_bridge *br, unsigned long val)
 637 {
 638         br->multicast_startup_query_interval = clock_t_to_jiffies(val);
 639         return 0;
 640 }
 641
 642 static ssize_t store_multicast_startup_query_interval(
 643         struct device *d, struct device_attribute *attr, const char *buf,
 644         size_t len)
 645 {
 646         return store_bridge_parm(d, buf, len, set_startup_query_interval);
 647 }
 648 static DEVICE_ATTR(multicast_startup_query_interval, S_IRUGO | S_IWUSR,
 649                    show_multicast_startup_query_interval,
 650                    store_multicast_startup_query_interval);
 651 #endif
 652 #ifdef CONFIG_BRIDGE_NETFILTER
 653 static ssize_t show_nf_call_iptables(
 654         struct device *d, struct device_attribute *attr, char *buf)
 655 {
 656         struct net_bridge *br = to_bridge(d);
 657         return sprintf(buf, "%u\n", br->nf_call_iptables);
 658 }
 659
 660 static int set_nf_call_iptables(struct net_bridge *br, unsigned long val)
 661 {
 662         br->nf_call_iptables = val ? true : false;
 663         return 0;
 664 }
 665
 666 static ssize_t store_nf_call_iptables(
 667         struct device *d, struct device_attribute *attr, const char *buf,
 668         size_t len)
 669 {
 670         return store_bridge_parm(d, buf, len, set_nf_call_iptables);
 671 }
 672 static DEVICE_ATTR(nf_call_iptables, S_IRUGO | S_IWUSR,
 673                    show_nf_call_iptables, store_nf_call_iptables);
 674
 675 static ssize_t show_nf_call_ip6tables(
 676         struct device *d, struct device_attribute *attr, char *buf)
 677 {
 678         struct net_bridge *br = to_bridge(d);
 679         return sprintf(buf, "%u\n", br->nf_call_ip6tables);
 680 }
 681
 682 static int set_nf_call_ip6tables(struct net_bridge *br, unsigned long val)
 683 {
 684         br->nf_call_ip6tables = val ? true : false;
 685         return 0;
 686 }
 687
 688 static ssize_t store_nf_call_ip6tables(
 689         struct device *d, struct device_attribute *attr, const char *buf,
 690         size_t len)
 691 {
 692         return store_bridge_parm(d, buf, len, set_nf_call_ip6tables);
 693 }
 694 static DEVICE_ATTR(nf_call_ip6tables, S_IRUGO | S_IWUSR,
 695                    show_nf_call_ip6tables, store_nf_call_ip6tables);
 696
 697 static ssize_t show_nf_call_arptables(
 698         struct device *d, struct device_attribute *attr, char *buf)
 699 {
 700         struct net_bridge *br = to_bridge(d);
 701         return sprintf(buf, "%u\n", br->nf_call_arptables);
 702 }
 703
 704 static int set_nf_call_arptables(struct net_bridge *br, unsigned long val)
 705 {
 706         br->nf_call_arptables = val ? true : false;
 707         return 0;
 708 }
 709
 710 static ssize_t store_nf_call_arptables(
 711         struct device *d, struct device_attribute *attr, const char *buf,
 712         size_t len)
 713 {
 714         return store_bridge_parm(d, buf, len, set_nf_call_arptables);
 715 }
 716 static DEVICE_ATTR(nf_call_arptables, S_IRUGO | S_IWUSR,
 717                    show_nf_call_arptables, store_nf_call_arptables);
 718 #endif
 719 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 720 static ssize_t show_vlan_filtering(struct device *d,
 721                                    struct device_attribute *attr,
 722                                    char *buf)
 723 {
 724         struct net_bridge *br = to_bridge(d);
 725         return sprintf(buf, "%d\n", br->vlan_enabled);
 726 }
 727
 728 static ssize_t store_vlan_filtering(struct device *d,
 729                                     struct device_attribute *attr,
 730                                     const char *buf, size_t len)
 731 {
 732         return store_bridge_parm(d, buf, len, br_vlan_filter_toggle);
 733 }
 734 static DEVICE_ATTR(vlan_filtering, S_IRUGO | S_IWUSR,
 735                    show_vlan_filtering, store_vlan_filtering);
 736 #endif
 737
 738 static struct attribute *bridge_attrs[] = {
 739         &dev_attr_forward_delay.attr,
 740         &dev_attr_hello_time.attr,
 741         &dev_attr_max_age.attr,
 742         &dev_attr_ageing_time.attr,
 743         &dev_attr_stp_state.attr,
 744         &dev_attr_group_fwd_mask.attr,
 745         &dev_attr_priority.attr,
 746         &dev_attr_bridge_id.attr,
 747         &dev_attr_root_id.attr,
 748         &dev_attr_root_path_cost.attr,
 749         &dev_attr_root_port.attr,
 750         &dev_attr_topology_change.attr,
 751         &dev_attr_topology_change_detected.attr,
 752         &dev_attr_hello_timer.attr,
 753         &dev_attr_tcn_timer.attr,
 754         &dev_attr_topology_change_timer.attr,
 755         &dev_attr_gc_timer.attr,
 756         &dev_attr_group_addr.attr,
 757         &dev_attr_flush.attr,
 758 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 759         &dev_attr_multicast_router.attr,
 760         &dev_attr_multicast_snooping.attr,
 761         &dev_attr_multicast_querier.attr,
 762         &dev_attr_multicast_query_use_ifaddr.attr,
 763         &dev_attr_hash_elasticity.attr,
 764         &dev_attr_hash_max.attr,
 765         &dev_attr_multicast_last_member_count.attr,
 766         &dev_attr_multicast_startup_query_count.attr,
 767         &dev_attr_multicast_last_member_interval.attr,
 768         &dev_attr_multicast_membership_interval.attr,
 769         &dev_attr_multicast_querier_interval.attr,
 770         &dev_attr_multicast_query_interval.attr,
 771         &dev_attr_multicast_query_response_interval.attr,
 772         &dev_attr_multicast_startup_query_interval.attr,
 773 #endif
 774 #ifdef CONFIG_BRIDGE_NETFILTER
 775         &dev_attr_nf_call_iptables.attr,
 776         &dev_attr_nf_call_ip6tables.attr,
 777         &dev_attr_nf_call_arptables.attr,
 778 #endif
 779 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 780         &dev_attr_vlan_filtering.attr,
 781 #endif
 782         NULL
 783 };
 784
 785 static struct attribute_group bridge_group = {
 786         .name = SYSFS_BRIDGE_ATTR,
 787         .attrs = bridge_attrs,
 788 };
 789
 790 /*
 791  * Export the forwarding information table as a binary file
 792  * The records are struct __fdb_entry.
 793  *
 794  * Returns the number of bytes read.
 795  */
 796 static ssize_t brforward_read(struct file *filp, struct kobject *kobj,
 797                               struct bin_attribute *bin_attr,
 798                               char *buf, loff_t off, size_t count)
 799 {
 800         struct device *dev = to_dev(kobj);
 801         struct net_bridge *br = to_bridge(dev);
 802         int n;
 803
 804         /* must read whole records */
 805         if (off % sizeof(struct __fdb_entry) != 0)
 806                 return -EINVAL;
 807
 808         n =  br_fdb_fillbuf(br, buf,
 809                             count / sizeof(struct __fdb_entry),
 810                             off / sizeof(struct __fdb_entry));
 811
 812         if (n > 0)
 813                 n *= sizeof(struct __fdb_entry);
 814
 815         return n;
 816 }
 817
 818 static struct bin_attribute bridge_forward = {
 819         .attr = { .name = SYSFS_BRIDGE_FDB,
 820                   .mode = S_IRUGO, },
 821         .read = brforward_read,
 822 };
 823
 824 /*
 825  * Add entries in sysfs onto the existing network class device
 826  * for the bridge.
 827  *   Adds a attribute group "bridge" containing tuning parameters.
 828  *   Binary attribute containing the forward table
 829  *   Sub directory to hold links to interfaces.
 830  *
 831  * Note: the ifobj exists only to be a subdirectory
 832  *   to hold links.  The ifobj exists in same data structure
 833  *   as it's parent the bridge so reference counting works.
 834  */
 835 int br_sysfs_addbr(struct net_device *dev)
 836 {
 837         struct kobject *brobj = &dev->dev.kobj;
 838         struct net_bridge *br = netdev_priv(dev);
 839         int err;
 840
 841         err = sysfs_create_group(brobj, &bridge_group);
 842         if (err) {
 843                 pr_info("%s: can't create group %s/%s\n",
 844                         __func__, dev->name, bridge_group.name);
 845                 goto out1;
 846         }
 847
 848         err = sysfs_create_bin_file(brobj, &bridge_forward);
 849         if (err) {
 850                 pr_info("%s: can't create attribute file %s/%s\n",
 851                         __func__, dev->name, bridge_forward.attr.name);
 852                 goto out2;
 853         }
 854
 855         br->ifobj = kobject_create_and_add(SYSFS_BRIDGE_PORT_SUBDIR, brobj);
 856         if (!br->ifobj) {
 857                 pr_info("%s: can't add kobject (directory) %s/%s\n",
 858                         __func__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR);
 859                 goto out3;
 860         }
 861         return 0;
 862  out3:
 863         sysfs_remove_bin_file(&dev->dev.kobj, &bridge_forward);
 864  out2:
 865         sysfs_remove_group(&dev->dev.kobj, &bridge_group);
 866  out1:
 867         return err;
 868
 869 }
 870
 871 void br_sysfs_delbr(struct net_device *dev)
 872 {
 873         struct kobject *kobj = &dev->dev.kobj;
 874         struct net_bridge *br = netdev_priv(dev);
 875
 876         kobject_put(br->ifobj);
 877         sysfs_remove_bin_file(kobj, &bridge_forward);
 878         sysfs_remove_group(kobj, &bridge_group);
 879 }