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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/if_bridge.h> |
18 | #include <linux/rtnetlink.h> |
19 | #include <linux/spinlock.h> |
20 | #include <linux/times.h> |
21 | |
22 | #include "br_private.h" |
23 | |
24 | #define to_dev(obj) container_of(obj, struct device, kobj) |
25 | #define to_bridge(cd) ((struct net_bridge *)netdev_priv(to_net_dev(cd))) |
26 | |
27 | /* |
28 | * Common code for storing bridge parameters. |
29 | */ |
30 | static ssize_t store_bridge_parm(struct device *d, |
31 | const char *buf, size_t len, |
32 | int (*set)(struct net_bridge *, unsigned long)) |
33 | { |
34 | struct net_bridge *br = to_bridge(d); |
35 | char *endp; |
36 | unsigned long val; |
37 | int err; |
38 | |
39 | if (!capable(CAP_NET_ADMIN)) |
40 | return -EPERM; |
41 | |
42 | val = simple_strtoul(buf, &endp, 0); |
43 | if (endp == buf) |
44 | return -EINVAL; |
45 | |
46 | spin_lock_bh(&br->lock); |
47 | err = (*set)(br, val); |
48 | spin_unlock_bh(&br->lock); |
49 | return err ? err : len; |
50 | } |
51 | |
52 | |
53 | static ssize_t show_forward_delay(struct device *d, |
54 | struct device_attribute *attr, char *buf) |
55 | { |
56 | struct net_bridge *br = to_bridge(d); |
57 | return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay)); |
58 | } |
59 | |
60 | static int set_forward_delay(struct net_bridge *br, unsigned long val) |
61 | { |
62 | unsigned long delay = clock_t_to_jiffies(val); |
63 | br->forward_delay = delay; |
64 | if (br_is_root_bridge(br)) |
65 | br->bridge_forward_delay = delay; |
66 | return 0; |
67 | } |
68 | |
69 | static ssize_t store_forward_delay(struct device *d, |
70 | struct device_attribute *attr, |
71 | const char *buf, size_t len) |
72 | { |
73 | return store_bridge_parm(d, buf, len, set_forward_delay); |
74 | } |
75 | static DEVICE_ATTR(forward_delay, S_IRUGO | S_IWUSR, |
76 | show_forward_delay, store_forward_delay); |
77 | |
78 | static ssize_t show_hello_time(struct device *d, struct device_attribute *attr, |
79 | char *buf) |
80 | { |
81 | return sprintf(buf, "%lu\n", |
82 | jiffies_to_clock_t(to_bridge(d)->hello_time)); |
83 | } |
84 | |
85 | static int set_hello_time(struct net_bridge *br, unsigned long val) |
86 | { |
87 | unsigned long t = clock_t_to_jiffies(val); |
88 | |
89 | if (t < HZ) |
90 | return -EINVAL; |
91 | |
92 | br->hello_time = t; |
93 | if (br_is_root_bridge(br)) |
94 | br->bridge_hello_time = t; |
95 | return 0; |
96 | } |
97 | |
98 | static ssize_t store_hello_time(struct device *d, |
99 | struct device_attribute *attr, const char *buf, |
100 | size_t len) |
101 | { |
102 | return store_bridge_parm(d, buf, len, set_hello_time); |
103 | } |
104 | static DEVICE_ATTR(hello_time, S_IRUGO | S_IWUSR, show_hello_time, |
105 | store_hello_time); |
106 | |
107 | static ssize_t show_max_age(struct device *d, struct device_attribute *attr, |
108 | char *buf) |
109 | { |
110 | return sprintf(buf, "%lu\n", |
111 | jiffies_to_clock_t(to_bridge(d)->max_age)); |
112 | } |
113 | |
114 | static int set_max_age(struct net_bridge *br, unsigned long val) |
115 | { |
116 | unsigned long t = clock_t_to_jiffies(val); |
117 | br->max_age = t; |
118 | if (br_is_root_bridge(br)) |
119 | br->bridge_max_age = t; |
120 | return 0; |
121 | } |
122 | |
123 | static ssize_t store_max_age(struct device *d, struct device_attribute *attr, |
124 | const char *buf, size_t len) |
125 | { |
126 | return store_bridge_parm(d, buf, len, set_max_age); |
127 | } |
128 | static DEVICE_ATTR(max_age, S_IRUGO | S_IWUSR, show_max_age, store_max_age); |
129 | |
130 | static ssize_t show_ageing_time(struct device *d, |
131 | struct device_attribute *attr, char *buf) |
132 | { |
133 | struct net_bridge *br = to_bridge(d); |
134 | return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time)); |
135 | } |
136 | |
137 | static int set_ageing_time(struct net_bridge *br, unsigned long val) |
138 | { |
139 | br->ageing_time = clock_t_to_jiffies(val); |
140 | return 0; |
141 | } |
142 | |
143 | static ssize_t store_ageing_time(struct device *d, |
144 | struct device_attribute *attr, |
145 | const char *buf, size_t len) |
146 | { |
147 | return store_bridge_parm(d, buf, len, set_ageing_time); |
148 | } |
149 | static DEVICE_ATTR(ageing_time, S_IRUGO | S_IWUSR, show_ageing_time, |
150 | store_ageing_time); |
151 | |
152 | static ssize_t show_stp_state(struct device *d, |
153 | struct device_attribute *attr, char *buf) |
154 | { |
155 | struct net_bridge *br = to_bridge(d); |
156 | return sprintf(buf, "%d\n", br->stp_enabled); |
157 | } |
158 | |
159 | |
160 | static ssize_t store_stp_state(struct device *d, |
161 | struct device_attribute *attr, const char *buf, |
162 | size_t len) |
163 | { |
164 | struct net_bridge *br = to_bridge(d); |
165 | char *endp; |
166 | unsigned long val; |
167 | |
168 | if (!capable(CAP_NET_ADMIN)) |
169 | return -EPERM; |
170 | |
171 | val = simple_strtoul(buf, &endp, 0); |
172 | if (endp == buf) |
173 | return -EINVAL; |
174 | |
175 | if (!rtnl_trylock()) |
176 | return restart_syscall(); |
177 | br_stp_set_enabled(br, val); |
178 | rtnl_unlock(); |
179 | |
180 | return len; |
181 | } |
182 | static DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state, |
183 | store_stp_state); |
184 | |
185 | static ssize_t show_priority(struct device *d, struct device_attribute *attr, |
186 | char *buf) |
187 | { |
188 | struct net_bridge *br = to_bridge(d); |
189 | return sprintf(buf, "%d\n", |
190 | (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]); |
191 | } |
192 | |
193 | static int set_priority(struct net_bridge *br, unsigned long val) |
194 | { |
195 | br_stp_set_bridge_priority(br, (u16) val); |
196 | return 0; |
197 | } |
198 | |
199 | static ssize_t store_priority(struct device *d, struct device_attribute *attr, |
200 | const char *buf, size_t len) |
201 | { |
202 | return store_bridge_parm(d, buf, len, set_priority); |
203 | } |
204 | static DEVICE_ATTR(priority, S_IRUGO | S_IWUSR, show_priority, store_priority); |
205 | |
206 | static ssize_t show_root_id(struct device *d, struct device_attribute *attr, |
207 | char *buf) |
208 | { |
209 | return br_show_bridge_id(buf, &to_bridge(d)->designated_root); |
210 | } |
211 | static DEVICE_ATTR(root_id, S_IRUGO, show_root_id, NULL); |
212 | |
213 | static ssize_t show_bridge_id(struct device *d, struct device_attribute *attr, |
214 | char *buf) |
215 | { |
216 | return br_show_bridge_id(buf, &to_bridge(d)->bridge_id); |
217 | } |
218 | static DEVICE_ATTR(bridge_id, S_IRUGO, show_bridge_id, NULL); |
219 | |
220 | static ssize_t show_root_port(struct device *d, struct device_attribute *attr, |
221 | char *buf) |
222 | { |
223 | return sprintf(buf, "%d\n", to_bridge(d)->root_port); |
224 | } |
225 | static DEVICE_ATTR(root_port, S_IRUGO, show_root_port, NULL); |
226 | |
227 | static ssize_t show_root_path_cost(struct device *d, |
228 | struct device_attribute *attr, char *buf) |
229 | { |
230 | return sprintf(buf, "%d\n", to_bridge(d)->root_path_cost); |
231 | } |
232 | static DEVICE_ATTR(root_path_cost, S_IRUGO, show_root_path_cost, NULL); |
233 | |
234 | static ssize_t show_topology_change(struct device *d, |
235 | struct device_attribute *attr, char *buf) |
236 | { |
237 | return sprintf(buf, "%d\n", to_bridge(d)->topology_change); |
238 | } |
239 | static DEVICE_ATTR(topology_change, S_IRUGO, show_topology_change, NULL); |
240 | |
241 | static ssize_t show_topology_change_detected(struct device *d, |
242 | struct device_attribute *attr, |
243 | char *buf) |
244 | { |
245 | struct net_bridge *br = to_bridge(d); |
246 | return sprintf(buf, "%d\n", br->topology_change_detected); |
247 | } |
248 | static DEVICE_ATTR(topology_change_detected, S_IRUGO, |
249 | show_topology_change_detected, NULL); |
250 | |
251 | static ssize_t show_hello_timer(struct device *d, |
252 | struct device_attribute *attr, char *buf) |
253 | { |
254 | struct net_bridge *br = to_bridge(d); |
255 | return sprintf(buf, "%ld\n", br_timer_value(&br->hello_timer)); |
256 | } |
257 | static DEVICE_ATTR(hello_timer, S_IRUGO, show_hello_timer, NULL); |
258 | |
259 | static ssize_t show_tcn_timer(struct device *d, struct device_attribute *attr, |
260 | char *buf) |
261 | { |
262 | struct net_bridge *br = to_bridge(d); |
263 | return sprintf(buf, "%ld\n", br_timer_value(&br->tcn_timer)); |
264 | } |
265 | static DEVICE_ATTR(tcn_timer, S_IRUGO, show_tcn_timer, NULL); |
266 | |
267 | static ssize_t show_topology_change_timer(struct device *d, |
268 | struct device_attribute *attr, |
269 | char *buf) |
270 | { |
271 | struct net_bridge *br = to_bridge(d); |
272 | return sprintf(buf, "%ld\n", br_timer_value(&br->topology_change_timer)); |
273 | } |
274 | static DEVICE_ATTR(topology_change_timer, S_IRUGO, show_topology_change_timer, |
275 | NULL); |
276 | |
277 | static ssize_t show_gc_timer(struct device *d, struct device_attribute *attr, |
278 | char *buf) |
279 | { |
280 | struct net_bridge *br = to_bridge(d); |
281 | return sprintf(buf, "%ld\n", br_timer_value(&br->gc_timer)); |
282 | } |
283 | static DEVICE_ATTR(gc_timer, S_IRUGO, show_gc_timer, NULL); |
284 | |
285 | static ssize_t show_group_addr(struct device *d, |
286 | struct device_attribute *attr, char *buf) |
287 | { |
288 | struct net_bridge *br = to_bridge(d); |
289 | return sprintf(buf, "%x:%x:%x:%x:%x:%x\n", |
290 | br->group_addr[0], br->group_addr[1], |
291 | br->group_addr[2], br->group_addr[3], |
292 | br->group_addr[4], br->group_addr[5]); |
293 | } |
294 | |
295 | static ssize_t store_group_addr(struct device *d, |
296 | struct device_attribute *attr, |
297 | const char *buf, size_t len) |
298 | { |
299 | struct net_bridge *br = to_bridge(d); |
300 | unsigned new_addr[6]; |
301 | int i; |
302 | |
303 | if (!capable(CAP_NET_ADMIN)) |
304 | return -EPERM; |
305 | |
306 | if (sscanf(buf, "%x:%x:%x:%x:%x:%x", |
307 | &new_addr[0], &new_addr[1], &new_addr[2], |
308 | &new_addr[3], &new_addr[4], &new_addr[5]) != 6) |
309 | return -EINVAL; |
310 | |
311 | /* Must be 01:80:c2:00:00:0X */ |
312 | for (i = 0; i < 5; i++) |
313 | if (new_addr[i] != br_group_address[i]) |
314 | return -EINVAL; |
315 | |
316 | if (new_addr[5] & ~0xf) |
317 | return -EINVAL; |
318 | |
319 | if (new_addr[5] == 1 || /* 802.3x Pause address */ |
320 | new_addr[5] == 2 || /* 802.3ad Slow protocols */ |
321 | new_addr[5] == 3) /* 802.1X PAE address */ |
322 | return -EINVAL; |
323 | |
324 | spin_lock_bh(&br->lock); |
325 | for (i = 0; i < 6; i++) |
326 | br->group_addr[i] = new_addr[i]; |
327 | spin_unlock_bh(&br->lock); |
328 | return len; |
329 | } |
330 | |
331 | static DEVICE_ATTR(group_addr, S_IRUGO | S_IWUSR, |
332 | show_group_addr, store_group_addr); |
333 | |
334 | static ssize_t store_flush(struct device *d, |
335 | struct device_attribute *attr, |
336 | const char *buf, size_t len) |
337 | { |
338 | struct net_bridge *br = to_bridge(d); |
339 | |
340 | if (!capable(CAP_NET_ADMIN)) |
341 | return -EPERM; |
342 | |
343 | br_fdb_flush(br); |
344 | return len; |
345 | } |
346 | static DEVICE_ATTR(flush, S_IWUSR, NULL, store_flush); |
347 | |
348 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
349 | static ssize_t show_multicast_router(struct device *d, |
350 | struct device_attribute *attr, char *buf) |
351 | { |
352 | struct net_bridge *br = to_bridge(d); |
353 | return sprintf(buf, "%d\n", br->multicast_router); |
354 | } |
355 | |
356 | static ssize_t store_multicast_router(struct device *d, |
357 | struct device_attribute *attr, |
358 | const char *buf, size_t len) |
359 | { |
360 | return store_bridge_parm(d, buf, len, br_multicast_set_router); |
361 | } |
362 | static DEVICE_ATTR(multicast_router, S_IRUGO | S_IWUSR, show_multicast_router, |
363 | store_multicast_router); |
364 | |
365 | static ssize_t show_multicast_snooping(struct device *d, |
366 | struct device_attribute *attr, |
367 | char *buf) |
368 | { |
369 | struct net_bridge *br = to_bridge(d); |
370 | return sprintf(buf, "%d\n", !br->multicast_disabled); |
371 | } |
372 | |
373 | static ssize_t store_multicast_snooping(struct device *d, |
374 | struct device_attribute *attr, |
375 | const char *buf, size_t len) |
376 | { |
377 | return store_bridge_parm(d, buf, len, br_multicast_toggle); |
378 | } |
379 | static DEVICE_ATTR(multicast_snooping, S_IRUGO | S_IWUSR, |
380 | show_multicast_snooping, store_multicast_snooping); |
381 | |
382 | static ssize_t show_hash_elasticity(struct device *d, |
383 | struct device_attribute *attr, char *buf) |
384 | { |
385 | struct net_bridge *br = to_bridge(d); |
386 | return sprintf(buf, "%u\n", br->hash_elasticity); |
387 | } |
388 | |
389 | static int set_elasticity(struct net_bridge *br, unsigned long val) |
390 | { |
391 | br->hash_elasticity = val; |
392 | return 0; |
393 | } |
394 | |
395 | static ssize_t store_hash_elasticity(struct device *d, |
396 | struct device_attribute *attr, |
397 | const char *buf, size_t len) |
398 | { |
399 | return store_bridge_parm(d, buf, len, set_elasticity); |
400 | } |
401 | static DEVICE_ATTR(hash_elasticity, S_IRUGO | S_IWUSR, show_hash_elasticity, |
402 | store_hash_elasticity); |
403 | |
404 | static ssize_t show_hash_max(struct device *d, struct device_attribute *attr, |
405 | char *buf) |
406 | { |
407 | struct net_bridge *br = to_bridge(d); |
408 | return sprintf(buf, "%u\n", br->hash_max); |
409 | } |
410 | |
411 | static ssize_t store_hash_max(struct device *d, struct device_attribute *attr, |
412 | const char *buf, size_t len) |
413 | { |
414 | return store_bridge_parm(d, buf, len, br_multicast_set_hash_max); |
415 | } |
416 | static DEVICE_ATTR(hash_max, S_IRUGO | S_IWUSR, show_hash_max, |
417 | store_hash_max); |
418 | |
419 | static ssize_t show_multicast_last_member_count(struct device *d, |
420 | struct device_attribute *attr, |
421 | char *buf) |
422 | { |
423 | struct net_bridge *br = to_bridge(d); |
424 | return sprintf(buf, "%u\n", br->multicast_last_member_count); |
425 | } |
426 | |
427 | static int set_last_member_count(struct net_bridge *br, unsigned long val) |
428 | { |
429 | br->multicast_last_member_count = val; |
430 | return 0; |
431 | } |
432 | |
433 | static ssize_t store_multicast_last_member_count(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_last_member_count); |
438 | } |
439 | static DEVICE_ATTR(multicast_last_member_count, S_IRUGO | S_IWUSR, |
440 | show_multicast_last_member_count, |
441 | store_multicast_last_member_count); |
442 | |
443 | static ssize_t show_multicast_startup_query_count( |
444 | struct device *d, struct device_attribute *attr, char *buf) |
445 | { |
446 | struct net_bridge *br = to_bridge(d); |
447 | return sprintf(buf, "%u\n", br->multicast_startup_query_count); |
448 | } |
449 | |
450 | static int set_startup_query_count(struct net_bridge *br, unsigned long val) |
451 | { |
452 | br->multicast_startup_query_count = val; |
453 | return 0; |
454 | } |
455 | |
456 | static ssize_t store_multicast_startup_query_count( |
457 | struct device *d, struct device_attribute *attr, const char *buf, |
458 | size_t len) |
459 | { |
460 | return store_bridge_parm(d, buf, len, set_startup_query_count); |
461 | } |
462 | static DEVICE_ATTR(multicast_startup_query_count, S_IRUGO | S_IWUSR, |
463 | show_multicast_startup_query_count, |
464 | store_multicast_startup_query_count); |
465 | |
466 | static ssize_t show_multicast_last_member_interval( |
467 | struct device *d, struct device_attribute *attr, char *buf) |
468 | { |
469 | struct net_bridge *br = to_bridge(d); |
470 | return sprintf(buf, "%lu\n", |
471 | jiffies_to_clock_t(br->multicast_last_member_interval)); |
472 | } |
473 | |
474 | static int set_last_member_interval(struct net_bridge *br, unsigned long val) |
475 | { |
476 | br->multicast_last_member_interval = clock_t_to_jiffies(val); |
477 | return 0; |
478 | } |
479 | |
480 | static ssize_t store_multicast_last_member_interval( |
481 | struct device *d, struct device_attribute *attr, const char *buf, |
482 | size_t len) |
483 | { |
484 | return store_bridge_parm(d, buf, len, set_last_member_interval); |
485 | } |
486 | static DEVICE_ATTR(multicast_last_member_interval, S_IRUGO | S_IWUSR, |
487 | show_multicast_last_member_interval, |
488 | store_multicast_last_member_interval); |
489 | |
490 | static ssize_t show_multicast_membership_interval( |
491 | struct device *d, struct device_attribute *attr, char *buf) |
492 | { |
493 | struct net_bridge *br = to_bridge(d); |
494 | return sprintf(buf, "%lu\n", |
495 | jiffies_to_clock_t(br->multicast_membership_interval)); |
496 | } |
497 | |
498 | static int set_membership_interval(struct net_bridge *br, unsigned long val) |
499 | { |
500 | br->multicast_membership_interval = clock_t_to_jiffies(val); |
501 | return 0; |
502 | } |
503 | |
504 | static ssize_t store_multicast_membership_interval( |
505 | struct device *d, struct device_attribute *attr, const char *buf, |
506 | size_t len) |
507 | { |
508 | return store_bridge_parm(d, buf, len, set_membership_interval); |
509 | } |
510 | static DEVICE_ATTR(multicast_membership_interval, S_IRUGO | S_IWUSR, |
511 | show_multicast_membership_interval, |
512 | store_multicast_membership_interval); |
513 | |
514 | static ssize_t show_multicast_querier_interval(struct device *d, |
515 | struct device_attribute *attr, |
516 | char *buf) |
517 | { |
518 | struct net_bridge *br = to_bridge(d); |
519 | return sprintf(buf, "%lu\n", |
520 | jiffies_to_clock_t(br->multicast_querier_interval)); |
521 | } |
522 | |
523 | static int set_querier_interval(struct net_bridge *br, unsigned long val) |
524 | { |
525 | br->multicast_querier_interval = clock_t_to_jiffies(val); |
526 | return 0; |
527 | } |
528 | |
529 | static ssize_t store_multicast_querier_interval(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_querier_interval); |
534 | } |
535 | static DEVICE_ATTR(multicast_querier_interval, S_IRUGO | S_IWUSR, |
536 | show_multicast_querier_interval, |
537 | store_multicast_querier_interval); |
538 | |
539 | static ssize_t show_multicast_query_interval(struct device *d, |
540 | struct device_attribute *attr, |
541 | char *buf) |
542 | { |
543 | struct net_bridge *br = to_bridge(d); |
544 | return sprintf(buf, "%lu\n", |
545 | jiffies_to_clock_t(br->multicast_query_interval)); |
546 | } |
547 | |
548 | static int set_query_interval(struct net_bridge *br, unsigned long val) |
549 | { |
550 | br->multicast_query_interval = clock_t_to_jiffies(val); |
551 | return 0; |
552 | } |
553 | |
554 | static ssize_t store_multicast_query_interval(struct device *d, |
555 | struct device_attribute *attr, |
556 | const char *buf, size_t len) |
557 | { |
558 | return store_bridge_parm(d, buf, len, set_query_interval); |
559 | } |
560 | static DEVICE_ATTR(multicast_query_interval, S_IRUGO | S_IWUSR, |
561 | show_multicast_query_interval, |
562 | store_multicast_query_interval); |
563 | |
564 | static ssize_t show_multicast_query_response_interval( |
565 | struct device *d, struct device_attribute *attr, char *buf) |
566 | { |
567 | struct net_bridge *br = to_bridge(d); |
568 | return sprintf( |
569 | buf, "%lu\n", |
570 | jiffies_to_clock_t(br->multicast_query_response_interval)); |
571 | } |
572 | |
573 | static int set_query_response_interval(struct net_bridge *br, unsigned long val) |
574 | { |
575 | br->multicast_query_response_interval = clock_t_to_jiffies(val); |
576 | return 0; |
577 | } |
578 | |
579 | static ssize_t store_multicast_query_response_interval( |
580 | struct device *d, struct device_attribute *attr, const char *buf, |
581 | size_t len) |
582 | { |
583 | return store_bridge_parm(d, buf, len, set_query_response_interval); |
584 | } |
585 | static DEVICE_ATTR(multicast_query_response_interval, S_IRUGO | S_IWUSR, |
586 | show_multicast_query_response_interval, |
587 | store_multicast_query_response_interval); |
588 | |
589 | static ssize_t show_multicast_startup_query_interval( |
590 | struct device *d, struct device_attribute *attr, char *buf) |
591 | { |
592 | struct net_bridge *br = to_bridge(d); |
593 | return sprintf( |
594 | buf, "%lu\n", |
595 | jiffies_to_clock_t(br->multicast_startup_query_interval)); |
596 | } |
597 | |
598 | static int set_startup_query_interval(struct net_bridge *br, unsigned long val) |
599 | { |
600 | br->multicast_startup_query_interval = clock_t_to_jiffies(val); |
601 | return 0; |
602 | } |
603 | |
604 | static ssize_t store_multicast_startup_query_interval( |
605 | struct device *d, struct device_attribute *attr, const char *buf, |
606 | size_t len) |
607 | { |
608 | return store_bridge_parm(d, buf, len, set_startup_query_interval); |
609 | } |
610 | static DEVICE_ATTR(multicast_startup_query_interval, S_IRUGO | S_IWUSR, |
611 | show_multicast_startup_query_interval, |
612 | store_multicast_startup_query_interval); |
613 | #endif |
614 | #ifdef CONFIG_BRIDGE_NETFILTER |
615 | static ssize_t show_nf_call_iptables( |
616 | struct device *d, struct device_attribute *attr, char *buf) |
617 | { |
618 | struct net_bridge *br = to_bridge(d); |
619 | return sprintf(buf, "%u\n", br->nf_call_iptables); |
620 | } |
621 | |
622 | static int set_nf_call_iptables(struct net_bridge *br, unsigned long val) |
623 | { |
624 | br->nf_call_iptables = val ? true : false; |
625 | return 0; |
626 | } |
627 | |
628 | static ssize_t store_nf_call_iptables( |
629 | struct device *d, struct device_attribute *attr, const char *buf, |
630 | size_t len) |
631 | { |
632 | return store_bridge_parm(d, buf, len, set_nf_call_iptables); |
633 | } |
634 | static DEVICE_ATTR(nf_call_iptables, S_IRUGO | S_IWUSR, |
635 | show_nf_call_iptables, store_nf_call_iptables); |
636 | |
637 | static ssize_t show_nf_call_ip6tables( |
638 | struct device *d, struct device_attribute *attr, char *buf) |
639 | { |
640 | struct net_bridge *br = to_bridge(d); |
641 | return sprintf(buf, "%u\n", br->nf_call_ip6tables); |
642 | } |
643 | |
644 | static int set_nf_call_ip6tables(struct net_bridge *br, unsigned long val) |
645 | { |
646 | br->nf_call_ip6tables = val ? true : false; |
647 | return 0; |
648 | } |
649 | |
650 | static ssize_t store_nf_call_ip6tables( |
651 | struct device *d, struct device_attribute *attr, const char *buf, |
652 | size_t len) |
653 | { |
654 | return store_bridge_parm(d, buf, len, set_nf_call_ip6tables); |
655 | } |
656 | static DEVICE_ATTR(nf_call_ip6tables, S_IRUGO | S_IWUSR, |
657 | show_nf_call_ip6tables, store_nf_call_ip6tables); |
658 | |
659 | static ssize_t show_nf_call_arptables( |
660 | struct device *d, struct device_attribute *attr, char *buf) |
661 | { |
662 | struct net_bridge *br = to_bridge(d); |
663 | return sprintf(buf, "%u\n", br->nf_call_arptables); |
664 | } |
665 | |
666 | static int set_nf_call_arptables(struct net_bridge *br, unsigned long val) |
667 | { |
668 | br->nf_call_arptables = val ? true : false; |
669 | return 0; |
670 | } |
671 | |
672 | static ssize_t store_nf_call_arptables( |
673 | struct device *d, struct device_attribute *attr, const char *buf, |
674 | size_t len) |
675 | { |
676 | return store_bridge_parm(d, buf, len, set_nf_call_arptables); |
677 | } |
678 | static DEVICE_ATTR(nf_call_arptables, S_IRUGO | S_IWUSR, |
679 | show_nf_call_arptables, store_nf_call_arptables); |
680 | #endif |
681 | |
682 | static struct attribute *bridge_attrs[] = { |
683 | &dev_attr_forward_delay.attr, |
684 | &dev_attr_hello_time.attr, |
685 | &dev_attr_max_age.attr, |
686 | &dev_attr_ageing_time.attr, |
687 | &dev_attr_stp_state.attr, |
688 | &dev_attr_priority.attr, |
689 | &dev_attr_bridge_id.attr, |
690 | &dev_attr_root_id.attr, |
691 | &dev_attr_root_path_cost.attr, |
692 | &dev_attr_root_port.attr, |
693 | &dev_attr_topology_change.attr, |
694 | &dev_attr_topology_change_detected.attr, |
695 | &dev_attr_hello_timer.attr, |
696 | &dev_attr_tcn_timer.attr, |
697 | &dev_attr_topology_change_timer.attr, |
698 | &dev_attr_gc_timer.attr, |
699 | &dev_attr_group_addr.attr, |
700 | &dev_attr_flush.attr, |
701 | #ifdef CONFIG_BRIDGE_IGMP_SNOOPING |
702 | &dev_attr_multicast_router.attr, |
703 | &dev_attr_multicast_snooping.attr, |
704 | &dev_attr_hash_elasticity.attr, |
705 | &dev_attr_hash_max.attr, |
706 | &dev_attr_multicast_last_member_count.attr, |
707 | &dev_attr_multicast_startup_query_count.attr, |
708 | &dev_attr_multicast_last_member_interval.attr, |
709 | &dev_attr_multicast_membership_interval.attr, |
710 | &dev_attr_multicast_querier_interval.attr, |
711 | &dev_attr_multicast_query_interval.attr, |
712 | &dev_attr_multicast_query_response_interval.attr, |
713 | &dev_attr_multicast_startup_query_interval.attr, |
714 | #endif |
715 | #ifdef CONFIG_BRIDGE_NETFILTER |
716 | &dev_attr_nf_call_iptables.attr, |
717 | &dev_attr_nf_call_ip6tables.attr, |
718 | &dev_attr_nf_call_arptables.attr, |
719 | #endif |
720 | NULL |
721 | }; |
722 | |
723 | static struct attribute_group bridge_group = { |
724 | .name = SYSFS_BRIDGE_ATTR, |
725 | .attrs = bridge_attrs, |
726 | }; |
727 | |
728 | /* |
729 | * Export the forwarding information table as a binary file |
730 | * The records are struct __fdb_entry. |
731 | * |
732 | * Returns the number of bytes read. |
733 | */ |
734 | static ssize_t brforward_read(struct file *filp, struct kobject *kobj, |
735 | struct bin_attribute *bin_attr, |
736 | char *buf, loff_t off, size_t count) |
737 | { |
738 | struct device *dev = to_dev(kobj); |
739 | struct net_bridge *br = to_bridge(dev); |
740 | int n; |
741 | |
742 | /* must read whole records */ |
743 | if (off % sizeof(struct __fdb_entry) != 0) |
744 | return -EINVAL; |
745 | |
746 | n = br_fdb_fillbuf(br, buf, |
747 | count / sizeof(struct __fdb_entry), |
748 | off / sizeof(struct __fdb_entry)); |
749 | |
750 | if (n > 0) |
751 | n *= sizeof(struct __fdb_entry); |
752 | |
753 | return n; |
754 | } |
755 | |
756 | static struct bin_attribute bridge_forward = { |
757 | .attr = { .name = SYSFS_BRIDGE_FDB, |
758 | .mode = S_IRUGO, }, |
759 | .read = brforward_read, |
760 | }; |
761 | |
762 | /* |
763 | * Add entries in sysfs onto the existing network class device |
764 | * for the bridge. |
765 | * Adds a attribute group "bridge" containing tuning parameters. |
766 | * Binary attribute containing the forward table |
767 | * Sub directory to hold links to interfaces. |
768 | * |
769 | * Note: the ifobj exists only to be a subdirectory |
770 | * to hold links. The ifobj exists in same data structure |
771 | * as it's parent the bridge so reference counting works. |
772 | */ |
773 | int br_sysfs_addbr(struct net_device *dev) |
774 | { |
775 | struct kobject *brobj = &dev->dev.kobj; |
776 | struct net_bridge *br = netdev_priv(dev); |
777 | int err; |
778 | |
779 | err = sysfs_create_group(brobj, &bridge_group); |
780 | if (err) { |
781 | pr_info("%s: can't create group %s/%s\n", |
782 | __func__, dev->name, bridge_group.name); |
783 | goto out1; |
784 | } |
785 | |
786 | err = sysfs_create_bin_file(brobj, &bridge_forward); |
787 | if (err) { |
788 | pr_info("%s: can't create attribute file %s/%s\n", |
789 | __func__, dev->name, bridge_forward.attr.name); |
790 | goto out2; |
791 | } |
792 | |
793 | br->ifobj = kobject_create_and_add(SYSFS_BRIDGE_PORT_SUBDIR, brobj); |
794 | if (!br->ifobj) { |
795 | pr_info("%s: can't add kobject (directory) %s/%s\n", |
796 | __func__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR); |
797 | goto out3; |
798 | } |
799 | return 0; |
800 | out3: |
801 | sysfs_remove_bin_file(&dev->dev.kobj, &bridge_forward); |
802 | out2: |
803 | sysfs_remove_group(&dev->dev.kobj, &bridge_group); |
804 | out1: |
805 | return err; |
806 | |
807 | } |
808 | |
809 | void br_sysfs_delbr(struct net_device *dev) |
810 | { |
811 | struct kobject *kobj = &dev->dev.kobj; |
812 | struct net_bridge *br = netdev_priv(dev); |
813 | |
814 | kobject_put(br->ifobj); |
815 | sysfs_remove_bin_file(kobj, &bridge_forward); |
816 | sysfs_remove_group(kobj, &bridge_group); |
817 | } |
818 |
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