]>
Commit | Line | Data |
---|---|---|
eb1d1641 HX |
1 | /* |
2 | * Bridge multicast support. | |
3 | * | |
4 | * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/err.h> | |
07f8ac4a | 14 | #include <linux/export.h> |
eb1d1641 HX |
15 | #include <linux/if_ether.h> |
16 | #include <linux/igmp.h> | |
17 | #include <linux/jhash.h> | |
18 | #include <linux/kernel.h> | |
b195167f | 19 | #include <linux/log2.h> |
eb1d1641 HX |
20 | #include <linux/netdevice.h> |
21 | #include <linux/netfilter_bridge.h> | |
22 | #include <linux/random.h> | |
23 | #include <linux/rculist.h> | |
24 | #include <linux/skbuff.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/timer.h> | |
1c8ad5bf | 27 | #include <linux/inetdevice.h> |
91b02d3d | 28 | #include <linux/mroute.h> |
eb1d1641 | 29 | #include <net/ip.h> |
dfd56b8b | 30 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
31 | #include <net/ipv6.h> |
32 | #include <net/mld.h> | |
d4c4f07d | 33 | #include <net/ip6_checksum.h> |
3c3769e6 | 34 | #include <net/addrconf.h> |
08b202b6 | 35 | #endif |
eb1d1641 HX |
36 | |
37 | #include "br_private.h" | |
38 | ||
cc0fdd80 | 39 | static void br_multicast_start_querier(struct net_bridge *br, |
90010b36 | 40 | struct bridge_mcast_own_query *query); |
754bc547 SA |
41 | static void br_multicast_add_router(struct net_bridge *br, |
42 | struct net_bridge_port *port); | |
bc8c20ac SA |
43 | static void br_ip4_multicast_leave_group(struct net_bridge *br, |
44 | struct net_bridge_port *port, | |
45 | __be32 group, | |
46 | __u16 vid); | |
47 | #if IS_ENABLED(CONFIG_IPV6) | |
48 | static void br_ip6_multicast_leave_group(struct net_bridge *br, | |
49 | struct net_bridge_port *port, | |
50 | const struct in6_addr *group, | |
51 | __u16 vid); | |
52 | #endif | |
2ce297fc | 53 | unsigned int br_mdb_rehash_seq; |
c83b8fab | 54 | |
8ef2a9a5 YH |
55 | static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b) |
56 | { | |
57 | if (a->proto != b->proto) | |
58 | return 0; | |
b0e9a30d VY |
59 | if (a->vid != b->vid) |
60 | return 0; | |
8ef2a9a5 YH |
61 | switch (a->proto) { |
62 | case htons(ETH_P_IP): | |
63 | return a->u.ip4 == b->u.ip4; | |
dfd56b8b | 64 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
65 | case htons(ETH_P_IPV6): |
66 | return ipv6_addr_equal(&a->u.ip6, &b->u.ip6); | |
67 | #endif | |
8ef2a9a5 YH |
68 | } |
69 | return 0; | |
70 | } | |
71 | ||
b0e9a30d VY |
72 | static inline int __br_ip4_hash(struct net_bridge_mdb_htable *mdb, __be32 ip, |
73 | __u16 vid) | |
eb1d1641 | 74 | { |
b0e9a30d | 75 | return jhash_2words((__force u32)ip, vid, mdb->secret) & (mdb->max - 1); |
eb1d1641 HX |
76 | } |
77 | ||
dfd56b8b | 78 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 79 | static inline int __br_ip6_hash(struct net_bridge_mdb_htable *mdb, |
b0e9a30d VY |
80 | const struct in6_addr *ip, |
81 | __u16 vid) | |
08b202b6 | 82 | { |
b0e9a30d VY |
83 | return jhash_2words(ipv6_addr_hash(ip), vid, |
84 | mdb->secret) & (mdb->max - 1); | |
08b202b6 YH |
85 | } |
86 | #endif | |
87 | ||
8ef2a9a5 YH |
88 | static inline int br_ip_hash(struct net_bridge_mdb_htable *mdb, |
89 | struct br_ip *ip) | |
90 | { | |
91 | switch (ip->proto) { | |
92 | case htons(ETH_P_IP): | |
b0e9a30d | 93 | return __br_ip4_hash(mdb, ip->u.ip4, ip->vid); |
dfd56b8b | 94 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 95 | case htons(ETH_P_IPV6): |
b0e9a30d | 96 | return __br_ip6_hash(mdb, &ip->u.ip6, ip->vid); |
08b202b6 | 97 | #endif |
8ef2a9a5 YH |
98 | } |
99 | return 0; | |
eb1d1641 HX |
100 | } |
101 | ||
102 | static struct net_bridge_mdb_entry *__br_mdb_ip_get( | |
8ef2a9a5 | 103 | struct net_bridge_mdb_htable *mdb, struct br_ip *dst, int hash) |
eb1d1641 HX |
104 | { |
105 | struct net_bridge_mdb_entry *mp; | |
eb1d1641 | 106 | |
b67bfe0d | 107 | hlist_for_each_entry_rcu(mp, &mdb->mhash[hash], hlist[mdb->ver]) { |
8ef2a9a5 | 108 | if (br_ip_equal(&mp->addr, dst)) |
eb1d1641 HX |
109 | return mp; |
110 | } | |
111 | ||
112 | return NULL; | |
113 | } | |
114 | ||
cfd56754 CW |
115 | struct net_bridge_mdb_entry *br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, |
116 | struct br_ip *dst) | |
7f285fa7 HX |
117 | { |
118 | if (!mdb) | |
119 | return NULL; | |
120 | ||
121 | return __br_mdb_ip_get(mdb, dst, br_ip_hash(mdb, dst)); | |
122 | } | |
123 | ||
8ef2a9a5 | 124 | static struct net_bridge_mdb_entry *br_mdb_ip4_get( |
b0e9a30d | 125 | struct net_bridge_mdb_htable *mdb, __be32 dst, __u16 vid) |
eb1d1641 | 126 | { |
8ef2a9a5 YH |
127 | struct br_ip br_dst; |
128 | ||
129 | br_dst.u.ip4 = dst; | |
130 | br_dst.proto = htons(ETH_P_IP); | |
b0e9a30d | 131 | br_dst.vid = vid; |
0821ec55 | 132 | |
7f285fa7 | 133 | return br_mdb_ip_get(mdb, &br_dst); |
8ef2a9a5 YH |
134 | } |
135 | ||
dfd56b8b | 136 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 137 | static struct net_bridge_mdb_entry *br_mdb_ip6_get( |
b0e9a30d VY |
138 | struct net_bridge_mdb_htable *mdb, const struct in6_addr *dst, |
139 | __u16 vid) | |
08b202b6 YH |
140 | { |
141 | struct br_ip br_dst; | |
0821ec55 | 142 | |
4e3fd7a0 | 143 | br_dst.u.ip6 = *dst; |
08b202b6 | 144 | br_dst.proto = htons(ETH_P_IPV6); |
b0e9a30d | 145 | br_dst.vid = vid; |
08b202b6 | 146 | |
7f285fa7 | 147 | return br_mdb_ip_get(mdb, &br_dst); |
08b202b6 YH |
148 | } |
149 | #endif | |
150 | ||
eb1d1641 | 151 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, |
fbca58a2 | 152 | struct sk_buff *skb, u16 vid) |
eb1d1641 | 153 | { |
e8051688 | 154 | struct net_bridge_mdb_htable *mdb = rcu_dereference(br->mdb); |
8ef2a9a5 YH |
155 | struct br_ip ip; |
156 | ||
7f285fa7 | 157 | if (br->multicast_disabled) |
eb1d1641 HX |
158 | return NULL; |
159 | ||
8ef2a9a5 | 160 | if (BR_INPUT_SKB_CB(skb)->igmp) |
eb1d1641 HX |
161 | return NULL; |
162 | ||
8ef2a9a5 | 163 | ip.proto = skb->protocol; |
fbca58a2 | 164 | ip.vid = vid; |
8ef2a9a5 | 165 | |
eb1d1641 HX |
166 | switch (skb->protocol) { |
167 | case htons(ETH_P_IP): | |
8ef2a9a5 YH |
168 | ip.u.ip4 = ip_hdr(skb)->daddr; |
169 | break; | |
dfd56b8b | 170 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 171 | case htons(ETH_P_IPV6): |
4e3fd7a0 | 172 | ip.u.ip6 = ipv6_hdr(skb)->daddr; |
08b202b6 YH |
173 | break; |
174 | #endif | |
8ef2a9a5 YH |
175 | default: |
176 | return NULL; | |
eb1d1641 HX |
177 | } |
178 | ||
8ef2a9a5 | 179 | return br_mdb_ip_get(mdb, &ip); |
eb1d1641 HX |
180 | } |
181 | ||
182 | static void br_mdb_free(struct rcu_head *head) | |
183 | { | |
184 | struct net_bridge_mdb_htable *mdb = | |
185 | container_of(head, struct net_bridge_mdb_htable, rcu); | |
186 | struct net_bridge_mdb_htable *old = mdb->old; | |
187 | ||
188 | mdb->old = NULL; | |
189 | kfree(old->mhash); | |
190 | kfree(old); | |
191 | } | |
192 | ||
193 | static int br_mdb_copy(struct net_bridge_mdb_htable *new, | |
194 | struct net_bridge_mdb_htable *old, | |
195 | int elasticity) | |
196 | { | |
197 | struct net_bridge_mdb_entry *mp; | |
eb1d1641 HX |
198 | int maxlen; |
199 | int len; | |
200 | int i; | |
201 | ||
202 | for (i = 0; i < old->max; i++) | |
b67bfe0d | 203 | hlist_for_each_entry(mp, &old->mhash[i], hlist[old->ver]) |
eb1d1641 | 204 | hlist_add_head(&mp->hlist[new->ver], |
8ef2a9a5 | 205 | &new->mhash[br_ip_hash(new, &mp->addr)]); |
eb1d1641 HX |
206 | |
207 | if (!elasticity) | |
208 | return 0; | |
209 | ||
210 | maxlen = 0; | |
211 | for (i = 0; i < new->max; i++) { | |
212 | len = 0; | |
b67bfe0d | 213 | hlist_for_each_entry(mp, &new->mhash[i], hlist[new->ver]) |
eb1d1641 HX |
214 | len++; |
215 | if (len > maxlen) | |
216 | maxlen = len; | |
217 | } | |
218 | ||
219 | return maxlen > elasticity ? -EINVAL : 0; | |
220 | } | |
221 | ||
cfd56754 | 222 | void br_multicast_free_pg(struct rcu_head *head) |
eb1d1641 HX |
223 | { |
224 | struct net_bridge_port_group *p = | |
225 | container_of(head, struct net_bridge_port_group, rcu); | |
226 | ||
227 | kfree(p); | |
228 | } | |
229 | ||
230 | static void br_multicast_free_group(struct rcu_head *head) | |
231 | { | |
232 | struct net_bridge_mdb_entry *mp = | |
233 | container_of(head, struct net_bridge_mdb_entry, rcu); | |
234 | ||
235 | kfree(mp); | |
236 | } | |
237 | ||
238 | static void br_multicast_group_expired(unsigned long data) | |
239 | { | |
240 | struct net_bridge_mdb_entry *mp = (void *)data; | |
241 | struct net_bridge *br = mp->br; | |
242 | struct net_bridge_mdb_htable *mdb; | |
243 | ||
244 | spin_lock(&br->multicast_lock); | |
245 | if (!netif_running(br->dev) || timer_pending(&mp->timer)) | |
246 | goto out; | |
247 | ||
8a870178 | 248 | mp->mglist = false; |
eb1d1641 HX |
249 | |
250 | if (mp->ports) | |
251 | goto out; | |
252 | ||
e8051688 ED |
253 | mdb = mlock_dereference(br->mdb, br); |
254 | ||
eb1d1641 HX |
255 | hlist_del_rcu(&mp->hlist[mdb->ver]); |
256 | mdb->size--; | |
257 | ||
eb1d1641 HX |
258 | call_rcu_bh(&mp->rcu, br_multicast_free_group); |
259 | ||
260 | out: | |
261 | spin_unlock(&br->multicast_lock); | |
262 | } | |
263 | ||
264 | static void br_multicast_del_pg(struct net_bridge *br, | |
265 | struct net_bridge_port_group *pg) | |
266 | { | |
e8051688 | 267 | struct net_bridge_mdb_htable *mdb; |
eb1d1641 HX |
268 | struct net_bridge_mdb_entry *mp; |
269 | struct net_bridge_port_group *p; | |
e8051688 ED |
270 | struct net_bridge_port_group __rcu **pp; |
271 | ||
272 | mdb = mlock_dereference(br->mdb, br); | |
eb1d1641 | 273 | |
8ef2a9a5 | 274 | mp = br_mdb_ip_get(mdb, &pg->addr); |
eb1d1641 HX |
275 | if (WARN_ON(!mp)) |
276 | return; | |
277 | ||
e8051688 ED |
278 | for (pp = &mp->ports; |
279 | (p = mlock_dereference(*pp, br)) != NULL; | |
280 | pp = &p->next) { | |
eb1d1641 HX |
281 | if (p != pg) |
282 | continue; | |
283 | ||
83f6a740 | 284 | rcu_assign_pointer(*pp, p->next); |
eb1d1641 HX |
285 | hlist_del_init(&p->mglist); |
286 | del_timer(&p->timer); | |
45ebcce5 ER |
287 | br_mdb_notify(br->dev, p->port, &pg->addr, RTM_DELMDB, |
288 | p->flags); | |
eb1d1641 HX |
289 | call_rcu_bh(&p->rcu, br_multicast_free_pg); |
290 | ||
454594f3 | 291 | if (!mp->ports && !mp->mglist && |
eb1d1641 HX |
292 | netif_running(br->dev)) |
293 | mod_timer(&mp->timer, jiffies); | |
294 | ||
295 | return; | |
296 | } | |
297 | ||
298 | WARN_ON(1); | |
299 | } | |
300 | ||
301 | static void br_multicast_port_group_expired(unsigned long data) | |
302 | { | |
303 | struct net_bridge_port_group *pg = (void *)data; | |
304 | struct net_bridge *br = pg->port->br; | |
305 | ||
306 | spin_lock(&br->multicast_lock); | |
307 | if (!netif_running(br->dev) || timer_pending(&pg->timer) || | |
9d06b6d8 | 308 | hlist_unhashed(&pg->mglist) || pg->flags & MDB_PG_FLAGS_PERMANENT) |
eb1d1641 HX |
309 | goto out; |
310 | ||
311 | br_multicast_del_pg(br, pg); | |
312 | ||
313 | out: | |
314 | spin_unlock(&br->multicast_lock); | |
315 | } | |
316 | ||
e8051688 | 317 | static int br_mdb_rehash(struct net_bridge_mdb_htable __rcu **mdbp, int max, |
eb1d1641 HX |
318 | int elasticity) |
319 | { | |
e8051688 | 320 | struct net_bridge_mdb_htable *old = rcu_dereference_protected(*mdbp, 1); |
eb1d1641 HX |
321 | struct net_bridge_mdb_htable *mdb; |
322 | int err; | |
323 | ||
324 | mdb = kmalloc(sizeof(*mdb), GFP_ATOMIC); | |
325 | if (!mdb) | |
326 | return -ENOMEM; | |
327 | ||
328 | mdb->max = max; | |
329 | mdb->old = old; | |
330 | ||
331 | mdb->mhash = kzalloc(max * sizeof(*mdb->mhash), GFP_ATOMIC); | |
332 | if (!mdb->mhash) { | |
333 | kfree(mdb); | |
334 | return -ENOMEM; | |
335 | } | |
336 | ||
337 | mdb->size = old ? old->size : 0; | |
338 | mdb->ver = old ? old->ver ^ 1 : 0; | |
339 | ||
340 | if (!old || elasticity) | |
341 | get_random_bytes(&mdb->secret, sizeof(mdb->secret)); | |
342 | else | |
343 | mdb->secret = old->secret; | |
344 | ||
345 | if (!old) | |
346 | goto out; | |
347 | ||
348 | err = br_mdb_copy(mdb, old, elasticity); | |
349 | if (err) { | |
350 | kfree(mdb->mhash); | |
351 | kfree(mdb); | |
352 | return err; | |
353 | } | |
354 | ||
2ce297fc | 355 | br_mdb_rehash_seq++; |
eb1d1641 HX |
356 | call_rcu_bh(&mdb->rcu, br_mdb_free); |
357 | ||
358 | out: | |
359 | rcu_assign_pointer(*mdbp, mdb); | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
8ef2a9a5 | 364 | static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br, |
1080ab95 NA |
365 | __be32 group, |
366 | u8 *igmp_type) | |
eb1d1641 | 367 | { |
5e923585 NA |
368 | struct igmpv3_query *ihv3; |
369 | size_t igmp_hdr_size; | |
eb1d1641 HX |
370 | struct sk_buff *skb; |
371 | struct igmphdr *ih; | |
372 | struct ethhdr *eth; | |
373 | struct iphdr *iph; | |
374 | ||
5e923585 NA |
375 | igmp_hdr_size = sizeof(*ih); |
376 | if (br->multicast_igmp_version == 3) | |
377 | igmp_hdr_size = sizeof(*ihv3); | |
eb1d1641 | 378 | skb = netdev_alloc_skb_ip_align(br->dev, sizeof(*eth) + sizeof(*iph) + |
5e923585 | 379 | igmp_hdr_size + 4); |
eb1d1641 HX |
380 | if (!skb) |
381 | goto out; | |
382 | ||
383 | skb->protocol = htons(ETH_P_IP); | |
384 | ||
385 | skb_reset_mac_header(skb); | |
386 | eth = eth_hdr(skb); | |
387 | ||
e5a727f6 | 388 | ether_addr_copy(eth->h_source, br->dev->dev_addr); |
eb1d1641 HX |
389 | eth->h_dest[0] = 1; |
390 | eth->h_dest[1] = 0; | |
391 | eth->h_dest[2] = 0x5e; | |
392 | eth->h_dest[3] = 0; | |
393 | eth->h_dest[4] = 0; | |
394 | eth->h_dest[5] = 1; | |
395 | eth->h_proto = htons(ETH_P_IP); | |
396 | skb_put(skb, sizeof(*eth)); | |
397 | ||
398 | skb_set_network_header(skb, skb->len); | |
399 | iph = ip_hdr(skb); | |
400 | ||
401 | iph->version = 4; | |
402 | iph->ihl = 6; | |
403 | iph->tos = 0xc0; | |
5e923585 | 404 | iph->tot_len = htons(sizeof(*iph) + igmp_hdr_size + 4); |
eb1d1641 HX |
405 | iph->id = 0; |
406 | iph->frag_off = htons(IP_DF); | |
407 | iph->ttl = 1; | |
408 | iph->protocol = IPPROTO_IGMP; | |
1c8ad5bf CW |
409 | iph->saddr = br->multicast_query_use_ifaddr ? |
410 | inet_select_addr(br->dev, 0, RT_SCOPE_LINK) : 0; | |
eb1d1641 HX |
411 | iph->daddr = htonl(INADDR_ALLHOSTS_GROUP); |
412 | ((u8 *)&iph[1])[0] = IPOPT_RA; | |
413 | ((u8 *)&iph[1])[1] = 4; | |
414 | ((u8 *)&iph[1])[2] = 0; | |
415 | ((u8 *)&iph[1])[3] = 0; | |
416 | ip_send_check(iph); | |
417 | skb_put(skb, 24); | |
418 | ||
419 | skb_set_transport_header(skb, skb->len); | |
1080ab95 | 420 | *igmp_type = IGMP_HOST_MEMBERSHIP_QUERY; |
eb1d1641 | 421 | |
5e923585 NA |
422 | switch (br->multicast_igmp_version) { |
423 | case 2: | |
424 | ih = igmp_hdr(skb); | |
425 | ih->type = IGMP_HOST_MEMBERSHIP_QUERY; | |
426 | ih->code = (group ? br->multicast_last_member_interval : | |
427 | br->multicast_query_response_interval) / | |
428 | (HZ / IGMP_TIMER_SCALE); | |
429 | ih->group = group; | |
430 | ih->csum = 0; | |
431 | ih->csum = ip_compute_csum((void *)ih, sizeof(*ih)); | |
432 | break; | |
433 | case 3: | |
434 | ihv3 = igmpv3_query_hdr(skb); | |
435 | ihv3->type = IGMP_HOST_MEMBERSHIP_QUERY; | |
436 | ihv3->code = (group ? br->multicast_last_member_interval : | |
437 | br->multicast_query_response_interval) / | |
438 | (HZ / IGMP_TIMER_SCALE); | |
439 | ihv3->group = group; | |
440 | ihv3->qqic = br->multicast_query_interval / HZ; | |
441 | ihv3->nsrcs = 0; | |
442 | ihv3->resv = 0; | |
443 | ihv3->suppress = 0; | |
444 | ihv3->qrv = 2; | |
445 | ihv3->csum = 0; | |
446 | ihv3->csum = ip_compute_csum((void *)ihv3, sizeof(*ihv3)); | |
447 | break; | |
448 | } | |
449 | ||
450 | skb_put(skb, igmp_hdr_size); | |
eb1d1641 HX |
451 | __skb_pull(skb, sizeof(*eth)); |
452 | ||
453 | out: | |
454 | return skb; | |
455 | } | |
456 | ||
dfd56b8b | 457 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 458 | static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br, |
1080ab95 NA |
459 | const struct in6_addr *grp, |
460 | u8 *igmp_type) | |
08b202b6 YH |
461 | { |
462 | struct sk_buff *skb; | |
463 | struct ipv6hdr *ip6h; | |
464 | struct mld_msg *mldq; | |
465 | struct ethhdr *eth; | |
466 | u8 *hopopt; | |
467 | unsigned long interval; | |
468 | ||
469 | skb = netdev_alloc_skb_ip_align(br->dev, sizeof(*eth) + sizeof(*ip6h) + | |
470 | 8 + sizeof(*mldq)); | |
471 | if (!skb) | |
472 | goto out; | |
473 | ||
474 | skb->protocol = htons(ETH_P_IPV6); | |
475 | ||
476 | /* Ethernet header */ | |
477 | skb_reset_mac_header(skb); | |
478 | eth = eth_hdr(skb); | |
479 | ||
e5a727f6 | 480 | ether_addr_copy(eth->h_source, br->dev->dev_addr); |
08b202b6 YH |
481 | eth->h_proto = htons(ETH_P_IPV6); |
482 | skb_put(skb, sizeof(*eth)); | |
483 | ||
484 | /* IPv6 header + HbH option */ | |
485 | skb_set_network_header(skb, skb->len); | |
486 | ip6h = ipv6_hdr(skb); | |
487 | ||
488 | *(__force __be32 *)ip6h = htonl(0x60000000); | |
76d66158 | 489 | ip6h->payload_len = htons(8 + sizeof(*mldq)); |
08b202b6 YH |
490 | ip6h->nexthdr = IPPROTO_HOPOPTS; |
491 | ip6h->hop_limit = 1; | |
a7bff75b | 492 | ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1)); |
d1d81d4c UW |
493 | if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0, |
494 | &ip6h->saddr)) { | |
495 | kfree_skb(skb); | |
0888d5f3 | 496 | br->has_ipv6_addr = 0; |
d1d81d4c UW |
497 | return NULL; |
498 | } | |
0888d5f3 | 499 | |
500 | br->has_ipv6_addr = 1; | |
36cff5a1 | 501 | ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest); |
08b202b6 YH |
502 | |
503 | hopopt = (u8 *)(ip6h + 1); | |
504 | hopopt[0] = IPPROTO_ICMPV6; /* next hdr */ | |
505 | hopopt[1] = 0; /* length of HbH */ | |
506 | hopopt[2] = IPV6_TLV_ROUTERALERT; /* Router Alert */ | |
507 | hopopt[3] = 2; /* Length of RA Option */ | |
508 | hopopt[4] = 0; /* Type = 0x0000 (MLD) */ | |
509 | hopopt[5] = 0; | |
1de5a71c EZ |
510 | hopopt[6] = IPV6_TLV_PAD1; /* Pad1 */ |
511 | hopopt[7] = IPV6_TLV_PAD1; /* Pad1 */ | |
08b202b6 YH |
512 | |
513 | skb_put(skb, sizeof(*ip6h) + 8); | |
514 | ||
515 | /* ICMPv6 */ | |
516 | skb_set_transport_header(skb, skb->len); | |
517 | mldq = (struct mld_msg *) icmp6_hdr(skb); | |
518 | ||
1080ab95 | 519 | interval = ipv6_addr_any(grp) ? |
32de868c LL |
520 | br->multicast_query_response_interval : |
521 | br->multicast_last_member_interval; | |
08b202b6 | 522 | |
1080ab95 | 523 | *igmp_type = ICMPV6_MGM_QUERY; |
08b202b6 YH |
524 | mldq->mld_type = ICMPV6_MGM_QUERY; |
525 | mldq->mld_code = 0; | |
526 | mldq->mld_cksum = 0; | |
527 | mldq->mld_maxdelay = htons((u16)jiffies_to_msecs(interval)); | |
528 | mldq->mld_reserved = 0; | |
1080ab95 | 529 | mldq->mld_mca = *grp; |
08b202b6 YH |
530 | |
531 | /* checksum */ | |
532 | mldq->mld_cksum = csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, | |
533 | sizeof(*mldq), IPPROTO_ICMPV6, | |
534 | csum_partial(mldq, | |
535 | sizeof(*mldq), 0)); | |
536 | skb_put(skb, sizeof(*mldq)); | |
537 | ||
538 | __skb_pull(skb, sizeof(*eth)); | |
539 | ||
540 | out: | |
541 | return skb; | |
542 | } | |
543 | #endif | |
544 | ||
8ef2a9a5 | 545 | static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br, |
1080ab95 NA |
546 | struct br_ip *addr, |
547 | u8 *igmp_type) | |
8ef2a9a5 YH |
548 | { |
549 | switch (addr->proto) { | |
550 | case htons(ETH_P_IP): | |
1080ab95 | 551 | return br_ip4_multicast_alloc_query(br, addr->u.ip4, igmp_type); |
dfd56b8b | 552 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 553 | case htons(ETH_P_IPV6): |
1080ab95 NA |
554 | return br_ip6_multicast_alloc_query(br, &addr->u.ip6, |
555 | igmp_type); | |
08b202b6 | 556 | #endif |
8ef2a9a5 YH |
557 | } |
558 | return NULL; | |
559 | } | |
560 | ||
eb1d1641 | 561 | static struct net_bridge_mdb_entry *br_multicast_get_group( |
8ef2a9a5 YH |
562 | struct net_bridge *br, struct net_bridge_port *port, |
563 | struct br_ip *group, int hash) | |
eb1d1641 | 564 | { |
e8051688 | 565 | struct net_bridge_mdb_htable *mdb; |
eb1d1641 | 566 | struct net_bridge_mdb_entry *mp; |
95c96174 ED |
567 | unsigned int count = 0; |
568 | unsigned int max; | |
eb1d1641 HX |
569 | int elasticity; |
570 | int err; | |
571 | ||
e8051688 | 572 | mdb = rcu_dereference_protected(br->mdb, 1); |
b67bfe0d | 573 | hlist_for_each_entry(mp, &mdb->mhash[hash], hlist[mdb->ver]) { |
eb1d1641 | 574 | count++; |
8ef2a9a5 | 575 | if (unlikely(br_ip_equal(group, &mp->addr))) |
eb1d1641 | 576 | return mp; |
eb1d1641 HX |
577 | } |
578 | ||
579 | elasticity = 0; | |
580 | max = mdb->max; | |
581 | ||
582 | if (unlikely(count > br->hash_elasticity && count)) { | |
583 | if (net_ratelimit()) | |
28a16c97 | 584 | br_info(br, "Multicast hash table " |
585 | "chain limit reached: %s\n", | |
586 | port ? port->dev->name : br->dev->name); | |
eb1d1641 HX |
587 | |
588 | elasticity = br->hash_elasticity; | |
589 | } | |
590 | ||
591 | if (mdb->size >= max) { | |
592 | max *= 2; | |
036be6db TG |
593 | if (unlikely(max > br->hash_max)) { |
594 | br_warn(br, "Multicast hash table maximum of %d " | |
595 | "reached, disabling snooping: %s\n", | |
596 | br->hash_max, | |
597 | port ? port->dev->name : br->dev->name); | |
eb1d1641 HX |
598 | err = -E2BIG; |
599 | disable: | |
600 | br->multicast_disabled = 1; | |
601 | goto err; | |
602 | } | |
603 | } | |
604 | ||
605 | if (max > mdb->max || elasticity) { | |
606 | if (mdb->old) { | |
607 | if (net_ratelimit()) | |
28a16c97 | 608 | br_info(br, "Multicast hash table " |
609 | "on fire: %s\n", | |
610 | port ? port->dev->name : br->dev->name); | |
eb1d1641 HX |
611 | err = -EEXIST; |
612 | goto err; | |
613 | } | |
614 | ||
615 | err = br_mdb_rehash(&br->mdb, max, elasticity); | |
616 | if (err) { | |
28a16c97 | 617 | br_warn(br, "Cannot rehash multicast " |
618 | "hash table, disabling snooping: %s, %d, %d\n", | |
619 | port ? port->dev->name : br->dev->name, | |
620 | mdb->size, err); | |
eb1d1641 HX |
621 | goto disable; |
622 | } | |
623 | ||
624 | err = -EAGAIN; | |
625 | goto err; | |
626 | } | |
627 | ||
628 | return NULL; | |
629 | ||
630 | err: | |
631 | mp = ERR_PTR(err); | |
632 | return mp; | |
633 | } | |
634 | ||
cfd56754 | 635 | struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, |
5e923585 NA |
636 | struct net_bridge_port *p, |
637 | struct br_ip *group) | |
eb1d1641 | 638 | { |
e8051688 | 639 | struct net_bridge_mdb_htable *mdb; |
eb1d1641 HX |
640 | struct net_bridge_mdb_entry *mp; |
641 | int hash; | |
4c0833bc | 642 | int err; |
eb1d1641 | 643 | |
e8051688 | 644 | mdb = rcu_dereference_protected(br->mdb, 1); |
eb1d1641 | 645 | if (!mdb) { |
4c0833bc TK |
646 | err = br_mdb_rehash(&br->mdb, BR_HASH_SIZE, 0); |
647 | if (err) | |
648 | return ERR_PTR(err); | |
eb1d1641 HX |
649 | goto rehash; |
650 | } | |
651 | ||
652 | hash = br_ip_hash(mdb, group); | |
5e923585 | 653 | mp = br_multicast_get_group(br, p, group, hash); |
eb1d1641 HX |
654 | switch (PTR_ERR(mp)) { |
655 | case 0: | |
656 | break; | |
657 | ||
658 | case -EAGAIN: | |
659 | rehash: | |
e8051688 | 660 | mdb = rcu_dereference_protected(br->mdb, 1); |
eb1d1641 HX |
661 | hash = br_ip_hash(mdb, group); |
662 | break; | |
663 | ||
664 | default: | |
665 | goto out; | |
666 | } | |
667 | ||
668 | mp = kzalloc(sizeof(*mp), GFP_ATOMIC); | |
669 | if (unlikely(!mp)) | |
4c0833bc | 670 | return ERR_PTR(-ENOMEM); |
eb1d1641 HX |
671 | |
672 | mp->br = br; | |
8ef2a9a5 | 673 | mp->addr = *group; |
1faabf2a ED |
674 | setup_timer(&mp->timer, br_multicast_group_expired, |
675 | (unsigned long)mp); | |
676 | ||
eb1d1641 HX |
677 | hlist_add_head_rcu(&mp->hlist[mdb->ver], &mdb->mhash[hash]); |
678 | mdb->size++; | |
679 | ||
680 | out: | |
681 | return mp; | |
682 | } | |
683 | ||
cfd56754 CW |
684 | struct net_bridge_port_group *br_multicast_new_port_group( |
685 | struct net_bridge_port *port, | |
686 | struct br_ip *group, | |
ccb1c31a | 687 | struct net_bridge_port_group __rcu *next, |
9d06b6d8 | 688 | unsigned char flags) |
cfd56754 CW |
689 | { |
690 | struct net_bridge_port_group *p; | |
691 | ||
692 | p = kzalloc(sizeof(*p), GFP_ATOMIC); | |
693 | if (unlikely(!p)) | |
694 | return NULL; | |
695 | ||
696 | p->addr = *group; | |
697 | p->port = port; | |
9d06b6d8 | 698 | p->flags = flags; |
eca2a43b | 699 | rcu_assign_pointer(p->next, next); |
cfd56754 CW |
700 | hlist_add_head(&p->mglist, &port->mglist); |
701 | setup_timer(&p->timer, br_multicast_port_group_expired, | |
702 | (unsigned long)p); | |
703 | return p; | |
704 | } | |
705 | ||
eb1d1641 | 706 | static int br_multicast_add_group(struct net_bridge *br, |
8ef2a9a5 YH |
707 | struct net_bridge_port *port, |
708 | struct br_ip *group) | |
eb1d1641 | 709 | { |
e8051688 | 710 | struct net_bridge_port_group __rcu **pp; |
5e923585 NA |
711 | struct net_bridge_port_group *p; |
712 | struct net_bridge_mdb_entry *mp; | |
454594f3 | 713 | unsigned long now = jiffies; |
eb1d1641 HX |
714 | int err; |
715 | ||
eb1d1641 HX |
716 | spin_lock(&br->multicast_lock); |
717 | if (!netif_running(br->dev) || | |
718 | (port && port->state == BR_STATE_DISABLED)) | |
719 | goto out; | |
720 | ||
721 | mp = br_multicast_new_group(br, port, group); | |
722 | err = PTR_ERR(mp); | |
4c0833bc | 723 | if (IS_ERR(mp)) |
eb1d1641 HX |
724 | goto err; |
725 | ||
726 | if (!port) { | |
8a870178 | 727 | mp->mglist = true; |
454594f3 | 728 | mod_timer(&mp->timer, now + br->multicast_membership_interval); |
eb1d1641 HX |
729 | goto out; |
730 | } | |
731 | ||
e8051688 ED |
732 | for (pp = &mp->ports; |
733 | (p = mlock_dereference(*pp, br)) != NULL; | |
734 | pp = &p->next) { | |
eb1d1641 | 735 | if (p->port == port) |
454594f3 | 736 | goto found; |
eb1d1641 HX |
737 | if ((unsigned long)p->port < (unsigned long)port) |
738 | break; | |
739 | } | |
740 | ||
9d06b6d8 | 741 | p = br_multicast_new_port_group(port, group, *pp, 0); |
eb1d1641 HX |
742 | if (unlikely(!p)) |
743 | goto err; | |
eb1d1641 | 744 | rcu_assign_pointer(*pp, p); |
45ebcce5 | 745 | br_mdb_notify(br->dev, port, group, RTM_NEWMDB, 0); |
eb1d1641 | 746 | |
454594f3 LL |
747 | found: |
748 | mod_timer(&p->timer, now + br->multicast_membership_interval); | |
eb1d1641 HX |
749 | out: |
750 | err = 0; | |
751 | ||
752 | err: | |
753 | spin_unlock(&br->multicast_lock); | |
754 | return err; | |
755 | } | |
756 | ||
8ef2a9a5 YH |
757 | static int br_ip4_multicast_add_group(struct net_bridge *br, |
758 | struct net_bridge_port *port, | |
b0e9a30d VY |
759 | __be32 group, |
760 | __u16 vid) | |
8ef2a9a5 YH |
761 | { |
762 | struct br_ip br_group; | |
763 | ||
764 | if (ipv4_is_local_multicast(group)) | |
765 | return 0; | |
766 | ||
767 | br_group.u.ip4 = group; | |
768 | br_group.proto = htons(ETH_P_IP); | |
b0e9a30d | 769 | br_group.vid = vid; |
8ef2a9a5 YH |
770 | |
771 | return br_multicast_add_group(br, port, &br_group); | |
772 | } | |
773 | ||
dfd56b8b | 774 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
775 | static int br_ip6_multicast_add_group(struct net_bridge *br, |
776 | struct net_bridge_port *port, | |
b0e9a30d VY |
777 | const struct in6_addr *group, |
778 | __u16 vid) | |
08b202b6 YH |
779 | { |
780 | struct br_ip br_group; | |
781 | ||
3c3769e6 | 782 | if (ipv6_addr_is_ll_all_nodes(group)) |
08b202b6 YH |
783 | return 0; |
784 | ||
4e3fd7a0 | 785 | br_group.u.ip6 = *group; |
9cc6e0c4 | 786 | br_group.proto = htons(ETH_P_IPV6); |
b0e9a30d | 787 | br_group.vid = vid; |
08b202b6 YH |
788 | |
789 | return br_multicast_add_group(br, port, &br_group); | |
790 | } | |
791 | #endif | |
792 | ||
eb1d1641 HX |
793 | static void br_multicast_router_expired(unsigned long data) |
794 | { | |
795 | struct net_bridge_port *port = (void *)data; | |
796 | struct net_bridge *br = port->br; | |
797 | ||
798 | spin_lock(&br->multicast_lock); | |
a55d8246 NA |
799 | if (port->multicast_router == MDB_RTR_TYPE_DISABLED || |
800 | port->multicast_router == MDB_RTR_TYPE_PERM || | |
eb1d1641 HX |
801 | timer_pending(&port->multicast_router_timer) || |
802 | hlist_unhashed(&port->rlist)) | |
803 | goto out; | |
804 | ||
805 | hlist_del_init_rcu(&port->rlist); | |
949f1e39 | 806 | br_rtr_notify(br->dev, port, RTM_DELMDB); |
a55d8246 NA |
807 | /* Don't allow timer refresh if the router expired */ |
808 | if (port->multicast_router == MDB_RTR_TYPE_TEMP) | |
809 | port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; | |
eb1d1641 HX |
810 | |
811 | out: | |
812 | spin_unlock(&br->multicast_lock); | |
813 | } | |
814 | ||
815 | static void br_multicast_local_router_expired(unsigned long data) | |
816 | { | |
817 | } | |
818 | ||
cc0fdd80 | 819 | static void br_multicast_querier_expired(struct net_bridge *br, |
90010b36 | 820 | struct bridge_mcast_own_query *query) |
c83b8fab | 821 | { |
c83b8fab HX |
822 | spin_lock(&br->multicast_lock); |
823 | if (!netif_running(br->dev) || br->multicast_disabled) | |
824 | goto out; | |
825 | ||
cc0fdd80 | 826 | br_multicast_start_querier(br, query); |
c83b8fab HX |
827 | |
828 | out: | |
829 | spin_unlock(&br->multicast_lock); | |
830 | } | |
831 | ||
cc0fdd80 LL |
832 | static void br_ip4_multicast_querier_expired(unsigned long data) |
833 | { | |
834 | struct net_bridge *br = (void *)data; | |
835 | ||
90010b36 | 836 | br_multicast_querier_expired(br, &br->ip4_own_query); |
cc0fdd80 LL |
837 | } |
838 | ||
839 | #if IS_ENABLED(CONFIG_IPV6) | |
840 | static void br_ip6_multicast_querier_expired(unsigned long data) | |
841 | { | |
842 | struct net_bridge *br = (void *)data; | |
843 | ||
90010b36 | 844 | br_multicast_querier_expired(br, &br->ip6_own_query); |
cc0fdd80 LL |
845 | } |
846 | #endif | |
847 | ||
dc4eb53a LL |
848 | static void br_multicast_select_own_querier(struct net_bridge *br, |
849 | struct br_ip *ip, | |
850 | struct sk_buff *skb) | |
851 | { | |
852 | if (ip->proto == htons(ETH_P_IP)) | |
853 | br->ip4_querier.addr.u.ip4 = ip_hdr(skb)->saddr; | |
854 | #if IS_ENABLED(CONFIG_IPV6) | |
855 | else | |
856 | br->ip6_querier.addr.u.ip6 = ipv6_hdr(skb)->saddr; | |
857 | #endif | |
858 | } | |
859 | ||
8ef2a9a5 YH |
860 | static void __br_multicast_send_query(struct net_bridge *br, |
861 | struct net_bridge_port *port, | |
862 | struct br_ip *ip) | |
eb1d1641 | 863 | { |
eb1d1641 | 864 | struct sk_buff *skb; |
1080ab95 | 865 | u8 igmp_type; |
eb1d1641 | 866 | |
1080ab95 | 867 | skb = br_multicast_alloc_query(br, ip, &igmp_type); |
eb1d1641 | 868 | if (!skb) |
8ef2a9a5 | 869 | return; |
eb1d1641 HX |
870 | |
871 | if (port) { | |
eb1d1641 | 872 | skb->dev = port->dev; |
a65056ec | 873 | br_multicast_count(br, port, skb, igmp_type, |
1080ab95 | 874 | BR_MCAST_DIR_TX); |
29a26a56 EB |
875 | NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, |
876 | dev_net(port->dev), NULL, skb, NULL, skb->dev, | |
f0b4eece | 877 | br_dev_queue_push_xmit); |
dc4eb53a LL |
878 | } else { |
879 | br_multicast_select_own_querier(br, ip, skb); | |
a65056ec | 880 | br_multicast_count(br, port, skb, igmp_type, |
1080ab95 | 881 | BR_MCAST_DIR_RX); |
eb1d1641 | 882 | netif_rx(skb); |
dc4eb53a | 883 | } |
8ef2a9a5 YH |
884 | } |
885 | ||
886 | static void br_multicast_send_query(struct net_bridge *br, | |
cc0fdd80 | 887 | struct net_bridge_port *port, |
90010b36 | 888 | struct bridge_mcast_own_query *own_query) |
8ef2a9a5 | 889 | { |
90010b36 | 890 | struct bridge_mcast_other_query *other_query = NULL; |
5e923585 NA |
891 | struct br_ip br_group; |
892 | unsigned long time; | |
8ef2a9a5 YH |
893 | |
894 | if (!netif_running(br->dev) || br->multicast_disabled || | |
cc0fdd80 | 895 | !br->multicast_querier) |
8ef2a9a5 YH |
896 | return; |
897 | ||
08b202b6 YH |
898 | memset(&br_group.u, 0, sizeof(br_group.u)); |
899 | ||
90010b36 LL |
900 | if (port ? (own_query == &port->ip4_own_query) : |
901 | (own_query == &br->ip4_own_query)) { | |
902 | other_query = &br->ip4_other_query; | |
cc0fdd80 | 903 | br_group.proto = htons(ETH_P_IP); |
dfd56b8b | 904 | #if IS_ENABLED(CONFIG_IPV6) |
cc0fdd80 | 905 | } else { |
90010b36 | 906 | other_query = &br->ip6_other_query; |
cc0fdd80 | 907 | br_group.proto = htons(ETH_P_IPV6); |
08b202b6 | 908 | #endif |
cc0fdd80 LL |
909 | } |
910 | ||
90010b36 | 911 | if (!other_query || timer_pending(&other_query->timer)) |
cc0fdd80 LL |
912 | return; |
913 | ||
914 | __br_multicast_send_query(br, port, &br_group); | |
eb1d1641 | 915 | |
eb1d1641 | 916 | time = jiffies; |
90010b36 | 917 | time += own_query->startup_sent < br->multicast_startup_query_count ? |
eb1d1641 HX |
918 | br->multicast_startup_query_interval : |
919 | br->multicast_query_interval; | |
90010b36 | 920 | mod_timer(&own_query->timer, time); |
eb1d1641 HX |
921 | } |
922 | ||
90010b36 LL |
923 | static void |
924 | br_multicast_port_query_expired(struct net_bridge_port *port, | |
925 | struct bridge_mcast_own_query *query) | |
eb1d1641 | 926 | { |
eb1d1641 HX |
927 | struct net_bridge *br = port->br; |
928 | ||
929 | spin_lock(&br->multicast_lock); | |
02a780c0 DC |
930 | if (port->state == BR_STATE_DISABLED || |
931 | port->state == BR_STATE_BLOCKING) | |
eb1d1641 HX |
932 | goto out; |
933 | ||
cc0fdd80 LL |
934 | if (query->startup_sent < br->multicast_startup_query_count) |
935 | query->startup_sent++; | |
eb1d1641 | 936 | |
cc0fdd80 | 937 | br_multicast_send_query(port->br, port, query); |
eb1d1641 HX |
938 | |
939 | out: | |
940 | spin_unlock(&br->multicast_lock); | |
941 | } | |
942 | ||
cc0fdd80 LL |
943 | static void br_ip4_multicast_port_query_expired(unsigned long data) |
944 | { | |
945 | struct net_bridge_port *port = (void *)data; | |
946 | ||
90010b36 | 947 | br_multicast_port_query_expired(port, &port->ip4_own_query); |
cc0fdd80 LL |
948 | } |
949 | ||
950 | #if IS_ENABLED(CONFIG_IPV6) | |
951 | static void br_ip6_multicast_port_query_expired(unsigned long data) | |
952 | { | |
953 | struct net_bridge_port *port = (void *)data; | |
954 | ||
90010b36 | 955 | br_multicast_port_query_expired(port, &port->ip6_own_query); |
cc0fdd80 LL |
956 | } |
957 | #endif | |
958 | ||
1080ab95 | 959 | int br_multicast_add_port(struct net_bridge_port *port) |
eb1d1641 | 960 | { |
7f0aec7a | 961 | port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; |
eb1d1641 HX |
962 | |
963 | setup_timer(&port->multicast_router_timer, br_multicast_router_expired, | |
964 | (unsigned long)port); | |
90010b36 LL |
965 | setup_timer(&port->ip4_own_query.timer, |
966 | br_ip4_multicast_port_query_expired, (unsigned long)port); | |
cc0fdd80 | 967 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
968 | setup_timer(&port->ip6_own_query.timer, |
969 | br_ip6_multicast_port_query_expired, (unsigned long)port); | |
cc0fdd80 | 970 | #endif |
1080ab95 NA |
971 | port->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats); |
972 | if (!port->mcast_stats) | |
973 | return -ENOMEM; | |
974 | ||
975 | return 0; | |
eb1d1641 HX |
976 | } |
977 | ||
978 | void br_multicast_del_port(struct net_bridge_port *port) | |
979 | { | |
e10177ab SA |
980 | struct net_bridge *br = port->br; |
981 | struct net_bridge_port_group *pg; | |
982 | struct hlist_node *n; | |
983 | ||
984 | /* Take care of the remaining groups, only perm ones should be left */ | |
985 | spin_lock_bh(&br->multicast_lock); | |
986 | hlist_for_each_entry_safe(pg, n, &port->mglist, mglist) | |
987 | br_multicast_del_pg(br, pg); | |
988 | spin_unlock_bh(&br->multicast_lock); | |
eb1d1641 | 989 | del_timer_sync(&port->multicast_router_timer); |
1080ab95 | 990 | free_percpu(port->mcast_stats); |
eb1d1641 HX |
991 | } |
992 | ||
90010b36 | 993 | static void br_multicast_enable(struct bridge_mcast_own_query *query) |
561f1103 | 994 | { |
cc0fdd80 | 995 | query->startup_sent = 0; |
561f1103 | 996 | |
cc0fdd80 LL |
997 | if (try_to_del_timer_sync(&query->timer) >= 0 || |
998 | del_timer(&query->timer)) | |
999 | mod_timer(&query->timer, jiffies); | |
561f1103 HX |
1000 | } |
1001 | ||
7cb3f921 | 1002 | static void __br_multicast_enable_port(struct net_bridge_port *port) |
eb1d1641 HX |
1003 | { |
1004 | struct net_bridge *br = port->br; | |
1005 | ||
eb1d1641 | 1006 | if (br->multicast_disabled || !netif_running(br->dev)) |
7cb3f921 | 1007 | return; |
eb1d1641 | 1008 | |
90010b36 | 1009 | br_multicast_enable(&port->ip4_own_query); |
cc0fdd80 | 1010 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 1011 | br_multicast_enable(&port->ip6_own_query); |
cc0fdd80 | 1012 | #endif |
7f0aec7a NA |
1013 | if (port->multicast_router == MDB_RTR_TYPE_PERM && |
1014 | hlist_unhashed(&port->rlist)) | |
754bc547 | 1015 | br_multicast_add_router(br, port); |
7cb3f921 | 1016 | } |
eb1d1641 | 1017 | |
7cb3f921 NA |
1018 | void br_multicast_enable_port(struct net_bridge_port *port) |
1019 | { | |
1020 | struct net_bridge *br = port->br; | |
1021 | ||
1022 | spin_lock(&br->multicast_lock); | |
1023 | __br_multicast_enable_port(port); | |
eb1d1641 HX |
1024 | spin_unlock(&br->multicast_lock); |
1025 | } | |
1026 | ||
1027 | void br_multicast_disable_port(struct net_bridge_port *port) | |
1028 | { | |
1029 | struct net_bridge *br = port->br; | |
1030 | struct net_bridge_port_group *pg; | |
b67bfe0d | 1031 | struct hlist_node *n; |
eb1d1641 HX |
1032 | |
1033 | spin_lock(&br->multicast_lock); | |
b67bfe0d | 1034 | hlist_for_each_entry_safe(pg, n, &port->mglist, mglist) |
9d06b6d8 | 1035 | if (!(pg->flags & MDB_PG_FLAGS_PERMANENT)) |
e10177ab | 1036 | br_multicast_del_pg(br, pg); |
eb1d1641 | 1037 | |
949f1e39 | 1038 | if (!hlist_unhashed(&port->rlist)) { |
eb1d1641 | 1039 | hlist_del_init_rcu(&port->rlist); |
949f1e39 | 1040 | br_rtr_notify(br->dev, port, RTM_DELMDB); |
a55d8246 NA |
1041 | /* Don't allow timer refresh if disabling */ |
1042 | if (port->multicast_router == MDB_RTR_TYPE_TEMP) | |
1043 | port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; | |
949f1e39 | 1044 | } |
eb1d1641 | 1045 | del_timer(&port->multicast_router_timer); |
90010b36 | 1046 | del_timer(&port->ip4_own_query.timer); |
cc0fdd80 | 1047 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 1048 | del_timer(&port->ip6_own_query.timer); |
cc0fdd80 | 1049 | #endif |
eb1d1641 HX |
1050 | spin_unlock(&br->multicast_lock); |
1051 | } | |
1052 | ||
8ef2a9a5 YH |
1053 | static int br_ip4_multicast_igmp3_report(struct net_bridge *br, |
1054 | struct net_bridge_port *port, | |
06499098 VY |
1055 | struct sk_buff *skb, |
1056 | u16 vid) | |
eb1d1641 HX |
1057 | { |
1058 | struct igmpv3_report *ih; | |
1059 | struct igmpv3_grec *grec; | |
1060 | int i; | |
1061 | int len; | |
1062 | int num; | |
1063 | int type; | |
1064 | int err = 0; | |
1065 | __be32 group; | |
1066 | ||
eb1d1641 HX |
1067 | ih = igmpv3_report_hdr(skb); |
1068 | num = ntohs(ih->ngrec); | |
c2d4fbd2 | 1069 | len = skb_transport_offset(skb) + sizeof(*ih); |
eb1d1641 HX |
1070 | |
1071 | for (i = 0; i < num; i++) { | |
1072 | len += sizeof(*grec); | |
1073 | if (!pskb_may_pull(skb, len)) | |
1074 | return -EINVAL; | |
1075 | ||
fd218cf9 | 1076 | grec = (void *)(skb->data + len - sizeof(*grec)); |
eb1d1641 HX |
1077 | group = grec->grec_mca; |
1078 | type = grec->grec_type; | |
1079 | ||
8eabf95c | 1080 | len += ntohs(grec->grec_nsrcs) * 4; |
eb1d1641 HX |
1081 | if (!pskb_may_pull(skb, len)) |
1082 | return -EINVAL; | |
1083 | ||
1084 | /* We treat this as an IGMPv2 report for now. */ | |
1085 | switch (type) { | |
1086 | case IGMPV3_MODE_IS_INCLUDE: | |
1087 | case IGMPV3_MODE_IS_EXCLUDE: | |
1088 | case IGMPV3_CHANGE_TO_INCLUDE: | |
1089 | case IGMPV3_CHANGE_TO_EXCLUDE: | |
1090 | case IGMPV3_ALLOW_NEW_SOURCES: | |
1091 | case IGMPV3_BLOCK_OLD_SOURCES: | |
1092 | break; | |
1093 | ||
1094 | default: | |
1095 | continue; | |
1096 | } | |
1097 | ||
bc8c20ac SA |
1098 | if ((type == IGMPV3_CHANGE_TO_INCLUDE || |
1099 | type == IGMPV3_MODE_IS_INCLUDE) && | |
1100 | ntohs(grec->grec_nsrcs) == 0) { | |
1101 | br_ip4_multicast_leave_group(br, port, group, vid); | |
1102 | } else { | |
1103 | err = br_ip4_multicast_add_group(br, port, group, vid); | |
1104 | if (err) | |
1105 | break; | |
1106 | } | |
eb1d1641 HX |
1107 | } |
1108 | ||
1109 | return err; | |
1110 | } | |
1111 | ||
dfd56b8b | 1112 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
1113 | static int br_ip6_multicast_mld2_report(struct net_bridge *br, |
1114 | struct net_bridge_port *port, | |
06499098 VY |
1115 | struct sk_buff *skb, |
1116 | u16 vid) | |
08b202b6 YH |
1117 | { |
1118 | struct icmp6hdr *icmp6h; | |
1119 | struct mld2_grec *grec; | |
1120 | int i; | |
1121 | int len; | |
1122 | int num; | |
1123 | int err = 0; | |
1124 | ||
1125 | if (!pskb_may_pull(skb, sizeof(*icmp6h))) | |
1126 | return -EINVAL; | |
1127 | ||
1128 | icmp6h = icmp6_hdr(skb); | |
1129 | num = ntohs(icmp6h->icmp6_dataun.un_data16[1]); | |
c2d4fbd2 | 1130 | len = skb_transport_offset(skb) + sizeof(*icmp6h); |
08b202b6 YH |
1131 | |
1132 | for (i = 0; i < num; i++) { | |
1133 | __be16 *nsrcs, _nsrcs; | |
1134 | ||
1135 | nsrcs = skb_header_pointer(skb, | |
1136 | len + offsetof(struct mld2_grec, | |
649e984d | 1137 | grec_nsrcs), |
08b202b6 YH |
1138 | sizeof(_nsrcs), &_nsrcs); |
1139 | if (!nsrcs) | |
1140 | return -EINVAL; | |
1141 | ||
1142 | if (!pskb_may_pull(skb, | |
1143 | len + sizeof(*grec) + | |
d41db9f3 | 1144 | sizeof(struct in6_addr) * ntohs(*nsrcs))) |
08b202b6 YH |
1145 | return -EINVAL; |
1146 | ||
1147 | grec = (struct mld2_grec *)(skb->data + len); | |
d41db9f3 LL |
1148 | len += sizeof(*grec) + |
1149 | sizeof(struct in6_addr) * ntohs(*nsrcs); | |
08b202b6 YH |
1150 | |
1151 | /* We treat these as MLDv1 reports for now. */ | |
1152 | switch (grec->grec_type) { | |
1153 | case MLD2_MODE_IS_INCLUDE: | |
1154 | case MLD2_MODE_IS_EXCLUDE: | |
1155 | case MLD2_CHANGE_TO_INCLUDE: | |
1156 | case MLD2_CHANGE_TO_EXCLUDE: | |
1157 | case MLD2_ALLOW_NEW_SOURCES: | |
1158 | case MLD2_BLOCK_OLD_SOURCES: | |
1159 | break; | |
1160 | ||
1161 | default: | |
1162 | continue; | |
1163 | } | |
1164 | ||
bc8c20ac SA |
1165 | if ((grec->grec_type == MLD2_CHANGE_TO_INCLUDE || |
1166 | grec->grec_type == MLD2_MODE_IS_INCLUDE) && | |
1167 | ntohs(*nsrcs) == 0) { | |
1168 | br_ip6_multicast_leave_group(br, port, &grec->grec_mca, | |
1169 | vid); | |
1170 | } else { | |
1171 | err = br_ip6_multicast_add_group(br, port, | |
1172 | &grec->grec_mca, vid); | |
9264251e | 1173 | if (err) |
bc8c20ac SA |
1174 | break; |
1175 | } | |
08b202b6 YH |
1176 | } |
1177 | ||
1178 | return err; | |
1179 | } | |
1180 | #endif | |
1181 | ||
dc4eb53a | 1182 | static bool br_ip4_multicast_select_querier(struct net_bridge *br, |
2cd41431 | 1183 | struct net_bridge_port *port, |
dc4eb53a LL |
1184 | __be32 saddr) |
1185 | { | |
1186 | if (!timer_pending(&br->ip4_own_query.timer) && | |
1187 | !timer_pending(&br->ip4_other_query.timer)) | |
1188 | goto update; | |
1189 | ||
1190 | if (!br->ip4_querier.addr.u.ip4) | |
1191 | goto update; | |
1192 | ||
1193 | if (ntohl(saddr) <= ntohl(br->ip4_querier.addr.u.ip4)) | |
1194 | goto update; | |
1195 | ||
1196 | return false; | |
1197 | ||
1198 | update: | |
1199 | br->ip4_querier.addr.u.ip4 = saddr; | |
1200 | ||
2cd41431 LL |
1201 | /* update protected by general multicast_lock by caller */ |
1202 | rcu_assign_pointer(br->ip4_querier.port, port); | |
1203 | ||
dc4eb53a LL |
1204 | return true; |
1205 | } | |
1206 | ||
1207 | #if IS_ENABLED(CONFIG_IPV6) | |
1208 | static bool br_ip6_multicast_select_querier(struct net_bridge *br, | |
2cd41431 | 1209 | struct net_bridge_port *port, |
dc4eb53a LL |
1210 | struct in6_addr *saddr) |
1211 | { | |
1212 | if (!timer_pending(&br->ip6_own_query.timer) && | |
1213 | !timer_pending(&br->ip6_other_query.timer)) | |
1214 | goto update; | |
1215 | ||
1216 | if (ipv6_addr_cmp(saddr, &br->ip6_querier.addr.u.ip6) <= 0) | |
1217 | goto update; | |
1218 | ||
1219 | return false; | |
1220 | ||
1221 | update: | |
1222 | br->ip6_querier.addr.u.ip6 = *saddr; | |
1223 | ||
2cd41431 LL |
1224 | /* update protected by general multicast_lock by caller */ |
1225 | rcu_assign_pointer(br->ip6_querier.port, port); | |
1226 | ||
dc4eb53a LL |
1227 | return true; |
1228 | } | |
1229 | #endif | |
1230 | ||
1231 | static bool br_multicast_select_querier(struct net_bridge *br, | |
2cd41431 | 1232 | struct net_bridge_port *port, |
dc4eb53a LL |
1233 | struct br_ip *saddr) |
1234 | { | |
1235 | switch (saddr->proto) { | |
1236 | case htons(ETH_P_IP): | |
2cd41431 | 1237 | return br_ip4_multicast_select_querier(br, port, saddr->u.ip4); |
dc4eb53a LL |
1238 | #if IS_ENABLED(CONFIG_IPV6) |
1239 | case htons(ETH_P_IPV6): | |
2cd41431 | 1240 | return br_ip6_multicast_select_querier(br, port, &saddr->u.ip6); |
dc4eb53a LL |
1241 | #endif |
1242 | } | |
1243 | ||
1244 | return false; | |
1245 | } | |
1246 | ||
cc0fdd80 | 1247 | static void |
90010b36 LL |
1248 | br_multicast_update_query_timer(struct net_bridge *br, |
1249 | struct bridge_mcast_other_query *query, | |
1250 | unsigned long max_delay) | |
b00589af | 1251 | { |
90010b36 LL |
1252 | if (!timer_pending(&query->timer)) |
1253 | query->delay_time = jiffies + max_delay; | |
b00589af | 1254 | |
90010b36 | 1255 | mod_timer(&query->timer, jiffies + br->multicast_querier_interval); |
b00589af LL |
1256 | } |
1257 | ||
7e80c124 | 1258 | /* |
7c77602f | 1259 | * Add port to router_list |
7e80c124 | 1260 | * list is maintained ordered by pointer value |
1261 | * and locked by br->multicast_lock and RCU | |
1262 | */ | |
0909e117 HX |
1263 | static void br_multicast_add_router(struct net_bridge *br, |
1264 | struct net_bridge_port *port) | |
1265 | { | |
dcdca2c4 | 1266 | struct net_bridge_port *p; |
b67bfe0d | 1267 | struct hlist_node *slot = NULL; |
dcdca2c4 | 1268 | |
1a040eac NA |
1269 | if (!hlist_unhashed(&port->rlist)) |
1270 | return; | |
1271 | ||
b67bfe0d | 1272 | hlist_for_each_entry(p, &br->router_list, rlist) { |
7e80c124 | 1273 | if ((unsigned long) port >= (unsigned long) p) |
1274 | break; | |
b67bfe0d | 1275 | slot = &p->rlist; |
dcdca2c4 | 1276 | } |
1277 | ||
7e80c124 | 1278 | if (slot) |
1d023284 | 1279 | hlist_add_behind_rcu(&port->rlist, slot); |
dcdca2c4 | 1280 | else |
1281 | hlist_add_head_rcu(&port->rlist, &br->router_list); | |
949f1e39 | 1282 | br_rtr_notify(br->dev, port, RTM_NEWMDB); |
0909e117 HX |
1283 | } |
1284 | ||
eb1d1641 HX |
1285 | static void br_multicast_mark_router(struct net_bridge *br, |
1286 | struct net_bridge_port *port) | |
1287 | { | |
1288 | unsigned long now = jiffies; | |
eb1d1641 HX |
1289 | |
1290 | if (!port) { | |
7f0aec7a | 1291 | if (br->multicast_router == MDB_RTR_TYPE_TEMP_QUERY) |
eb1d1641 HX |
1292 | mod_timer(&br->multicast_router_timer, |
1293 | now + br->multicast_querier_interval); | |
1294 | return; | |
1295 | } | |
1296 | ||
a55d8246 NA |
1297 | if (port->multicast_router == MDB_RTR_TYPE_DISABLED || |
1298 | port->multicast_router == MDB_RTR_TYPE_PERM) | |
eb1d1641 HX |
1299 | return; |
1300 | ||
0909e117 | 1301 | br_multicast_add_router(br, port); |
eb1d1641 | 1302 | |
eb1d1641 HX |
1303 | mod_timer(&port->multicast_router_timer, |
1304 | now + br->multicast_querier_interval); | |
1305 | } | |
1306 | ||
1307 | static void br_multicast_query_received(struct net_bridge *br, | |
1308 | struct net_bridge_port *port, | |
90010b36 | 1309 | struct bridge_mcast_other_query *query, |
dc4eb53a | 1310 | struct br_ip *saddr, |
b00589af | 1311 | unsigned long max_delay) |
eb1d1641 | 1312 | { |
2cd41431 | 1313 | if (!br_multicast_select_querier(br, port, saddr)) |
eb1d1641 HX |
1314 | return; |
1315 | ||
dc4eb53a | 1316 | br_multicast_update_query_timer(br, query, max_delay); |
eb1d1641 HX |
1317 | br_multicast_mark_router(br, port); |
1318 | } | |
1319 | ||
8ef2a9a5 YH |
1320 | static int br_ip4_multicast_query(struct net_bridge *br, |
1321 | struct net_bridge_port *port, | |
06499098 VY |
1322 | struct sk_buff *skb, |
1323 | u16 vid) | |
eb1d1641 | 1324 | { |
b71d1d42 | 1325 | const struct iphdr *iph = ip_hdr(skb); |
eb1d1641 HX |
1326 | struct igmphdr *ih = igmp_hdr(skb); |
1327 | struct net_bridge_mdb_entry *mp; | |
1328 | struct igmpv3_query *ih3; | |
1329 | struct net_bridge_port_group *p; | |
e8051688 | 1330 | struct net_bridge_port_group __rcu **pp; |
dc4eb53a | 1331 | struct br_ip saddr; |
eb1d1641 HX |
1332 | unsigned long max_delay; |
1333 | unsigned long now = jiffies; | |
856ce5d0 | 1334 | unsigned int offset = skb_transport_offset(skb); |
eb1d1641 | 1335 | __be32 group; |
bec68ff1 | 1336 | int err = 0; |
eb1d1641 HX |
1337 | |
1338 | spin_lock(&br->multicast_lock); | |
1339 | if (!netif_running(br->dev) || | |
1340 | (port && port->state == BR_STATE_DISABLED)) | |
1341 | goto out; | |
1342 | ||
eb1d1641 HX |
1343 | group = ih->group; |
1344 | ||
856ce5d0 | 1345 | if (skb->len == offset + sizeof(*ih)) { |
eb1d1641 HX |
1346 | max_delay = ih->code * (HZ / IGMP_TIMER_SCALE); |
1347 | ||
1348 | if (!max_delay) { | |
1349 | max_delay = 10 * HZ; | |
1350 | group = 0; | |
1351 | } | |
856ce5d0 | 1352 | } else if (skb->len >= offset + sizeof(*ih3)) { |
eb1d1641 HX |
1353 | ih3 = igmpv3_query_hdr(skb); |
1354 | if (ih3->nsrcs) | |
bec68ff1 | 1355 | goto out; |
eb1d1641 | 1356 | |
0ba8c9ec YH |
1357 | max_delay = ih3->code ? |
1358 | IGMPV3_MRC(ih3->code) * (HZ / IGMP_TIMER_SCALE) : 1; | |
9afd85c9 | 1359 | } else { |
9ed973cc LL |
1360 | goto out; |
1361 | } | |
1362 | ||
dc4eb53a LL |
1363 | if (!group) { |
1364 | saddr.proto = htons(ETH_P_IP); | |
1365 | saddr.u.ip4 = iph->saddr; | |
b00589af | 1366 | |
dc4eb53a LL |
1367 | br_multicast_query_received(br, port, &br->ip4_other_query, |
1368 | &saddr, max_delay); | |
eb1d1641 | 1369 | goto out; |
dc4eb53a | 1370 | } |
eb1d1641 | 1371 | |
b0e9a30d | 1372 | mp = br_mdb_ip4_get(mlock_dereference(br->mdb, br), group, vid); |
eb1d1641 HX |
1373 | if (!mp) |
1374 | goto out; | |
1375 | ||
1376 | max_delay *= br->multicast_last_member_count; | |
1377 | ||
8a870178 | 1378 | if (mp->mglist && |
eb1d1641 HX |
1379 | (timer_pending(&mp->timer) ? |
1380 | time_after(mp->timer.expires, now + max_delay) : | |
1381 | try_to_del_timer_sync(&mp->timer) >= 0)) | |
1382 | mod_timer(&mp->timer, now + max_delay); | |
1383 | ||
e8051688 ED |
1384 | for (pp = &mp->ports; |
1385 | (p = mlock_dereference(*pp, br)) != NULL; | |
1386 | pp = &p->next) { | |
eb1d1641 HX |
1387 | if (timer_pending(&p->timer) ? |
1388 | time_after(p->timer.expires, now + max_delay) : | |
1389 | try_to_del_timer_sync(&p->timer) >= 0) | |
24f9cdcb | 1390 | mod_timer(&p->timer, now + max_delay); |
eb1d1641 HX |
1391 | } |
1392 | ||
1393 | out: | |
1394 | spin_unlock(&br->multicast_lock); | |
bec68ff1 | 1395 | return err; |
eb1d1641 HX |
1396 | } |
1397 | ||
dfd56b8b | 1398 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
1399 | static int br_ip6_multicast_query(struct net_bridge *br, |
1400 | struct net_bridge_port *port, | |
06499098 VY |
1401 | struct sk_buff *skb, |
1402 | u16 vid) | |
08b202b6 | 1403 | { |
b71d1d42 | 1404 | const struct ipv6hdr *ip6h = ipv6_hdr(skb); |
eca2a43b | 1405 | struct mld_msg *mld; |
08b202b6 YH |
1406 | struct net_bridge_mdb_entry *mp; |
1407 | struct mld2_query *mld2q; | |
e8051688 ED |
1408 | struct net_bridge_port_group *p; |
1409 | struct net_bridge_port_group __rcu **pp; | |
dc4eb53a | 1410 | struct br_ip saddr; |
08b202b6 YH |
1411 | unsigned long max_delay; |
1412 | unsigned long now = jiffies; | |
856ce5d0 | 1413 | unsigned int offset = skb_transport_offset(skb); |
b71d1d42 | 1414 | const struct in6_addr *group = NULL; |
9ed973cc | 1415 | bool is_general_query; |
08b202b6 YH |
1416 | int err = 0; |
1417 | ||
1418 | spin_lock(&br->multicast_lock); | |
1419 | if (!netif_running(br->dev) || | |
1420 | (port && port->state == BR_STATE_DISABLED)) | |
1421 | goto out; | |
1422 | ||
856ce5d0 LL |
1423 | if (skb->len == offset + sizeof(*mld)) { |
1424 | if (!pskb_may_pull(skb, offset + sizeof(*mld))) { | |
08b202b6 YH |
1425 | err = -EINVAL; |
1426 | goto out; | |
1427 | } | |
1428 | mld = (struct mld_msg *) icmp6_hdr(skb); | |
4715213d | 1429 | max_delay = msecs_to_jiffies(ntohs(mld->mld_maxdelay)); |
08b202b6 YH |
1430 | if (max_delay) |
1431 | group = &mld->mld_mca; | |
248ba8ec | 1432 | } else { |
856ce5d0 | 1433 | if (!pskb_may_pull(skb, offset + sizeof(*mld2q))) { |
08b202b6 YH |
1434 | err = -EINVAL; |
1435 | goto out; | |
1436 | } | |
1437 | mld2q = (struct mld2_query *)icmp6_hdr(skb); | |
1438 | if (!mld2q->mld2q_nsrcs) | |
1439 | group = &mld2q->mld2q_mca; | |
e3f5b170 DB |
1440 | |
1441 | max_delay = max(msecs_to_jiffies(mldv2_mrc(mld2q)), 1UL); | |
08b202b6 YH |
1442 | } |
1443 | ||
9ed973cc LL |
1444 | is_general_query = group && ipv6_addr_any(group); |
1445 | ||
dc4eb53a LL |
1446 | if (is_general_query) { |
1447 | saddr.proto = htons(ETH_P_IPV6); | |
1448 | saddr.u.ip6 = ip6h->saddr; | |
b00589af | 1449 | |
dc4eb53a LL |
1450 | br_multicast_query_received(br, port, &br->ip6_other_query, |
1451 | &saddr, max_delay); | |
08b202b6 | 1452 | goto out; |
6c03ee8b LL |
1453 | } else if (!group) { |
1454 | goto out; | |
dc4eb53a | 1455 | } |
08b202b6 | 1456 | |
b0e9a30d | 1457 | mp = br_mdb_ip6_get(mlock_dereference(br->mdb, br), group, vid); |
08b202b6 YH |
1458 | if (!mp) |
1459 | goto out; | |
1460 | ||
1461 | max_delay *= br->multicast_last_member_count; | |
8a870178 | 1462 | if (mp->mglist && |
08b202b6 YH |
1463 | (timer_pending(&mp->timer) ? |
1464 | time_after(mp->timer.expires, now + max_delay) : | |
1465 | try_to_del_timer_sync(&mp->timer) >= 0)) | |
1466 | mod_timer(&mp->timer, now + max_delay); | |
1467 | ||
e8051688 ED |
1468 | for (pp = &mp->ports; |
1469 | (p = mlock_dereference(*pp, br)) != NULL; | |
1470 | pp = &p->next) { | |
08b202b6 YH |
1471 | if (timer_pending(&p->timer) ? |
1472 | time_after(p->timer.expires, now + max_delay) : | |
1473 | try_to_del_timer_sync(&p->timer) >= 0) | |
24f9cdcb | 1474 | mod_timer(&p->timer, now + max_delay); |
08b202b6 YH |
1475 | } |
1476 | ||
1477 | out: | |
1478 | spin_unlock(&br->multicast_lock); | |
1479 | return err; | |
1480 | } | |
1481 | #endif | |
1482 | ||
90010b36 LL |
1483 | static void |
1484 | br_multicast_leave_group(struct net_bridge *br, | |
1485 | struct net_bridge_port *port, | |
1486 | struct br_ip *group, | |
1487 | struct bridge_mcast_other_query *other_query, | |
1488 | struct bridge_mcast_own_query *own_query) | |
eb1d1641 HX |
1489 | { |
1490 | struct net_bridge_mdb_htable *mdb; | |
1491 | struct net_bridge_mdb_entry *mp; | |
1492 | struct net_bridge_port_group *p; | |
1493 | unsigned long now; | |
1494 | unsigned long time; | |
1495 | ||
eb1d1641 HX |
1496 | spin_lock(&br->multicast_lock); |
1497 | if (!netif_running(br->dev) || | |
544586f7 | 1498 | (port && port->state == BR_STATE_DISABLED)) |
eb1d1641 HX |
1499 | goto out; |
1500 | ||
e8051688 | 1501 | mdb = mlock_dereference(br->mdb, br); |
eb1d1641 HX |
1502 | mp = br_mdb_ip_get(mdb, group); |
1503 | if (!mp) | |
1504 | goto out; | |
1505 | ||
544586f7 SA |
1506 | if (port && (port->flags & BR_MULTICAST_FAST_LEAVE)) { |
1507 | struct net_bridge_port_group __rcu **pp; | |
1508 | ||
1509 | for (pp = &mp->ports; | |
1510 | (p = mlock_dereference(*pp, br)) != NULL; | |
1511 | pp = &p->next) { | |
1512 | if (p->port != port) | |
1513 | continue; | |
1514 | ||
1515 | rcu_assign_pointer(*pp, p->next); | |
1516 | hlist_del_init(&p->mglist); | |
1517 | del_timer(&p->timer); | |
1518 | call_rcu_bh(&p->rcu, br_multicast_free_pg); | |
45ebcce5 ER |
1519 | br_mdb_notify(br->dev, port, group, RTM_DELMDB, |
1520 | p->flags); | |
544586f7 SA |
1521 | |
1522 | if (!mp->ports && !mp->mglist && | |
1523 | netif_running(br->dev)) | |
1524 | mod_timer(&mp->timer, jiffies); | |
1525 | } | |
1526 | goto out; | |
1527 | } | |
1528 | ||
1529 | if (timer_pending(&other_query->timer)) | |
1530 | goto out; | |
1531 | ||
cc0fdd80 | 1532 | if (br->multicast_querier) { |
6b7df111 CW |
1533 | __br_multicast_send_query(br, port, &mp->addr); |
1534 | ||
1535 | time = jiffies + br->multicast_last_member_count * | |
1536 | br->multicast_last_member_interval; | |
cc0fdd80 | 1537 | |
90010b36 | 1538 | mod_timer(&own_query->timer, time); |
6b7df111 CW |
1539 | |
1540 | for (p = mlock_dereference(mp->ports, br); | |
1541 | p != NULL; | |
1542 | p = mlock_dereference(p->next, br)) { | |
1543 | if (p->port != port) | |
1544 | continue; | |
1545 | ||
1546 | if (!hlist_unhashed(&p->mglist) && | |
1547 | (timer_pending(&p->timer) ? | |
1548 | time_after(p->timer.expires, time) : | |
1549 | try_to_del_timer_sync(&p->timer) >= 0)) { | |
1550 | mod_timer(&p->timer, time); | |
1551 | } | |
1552 | ||
1553 | break; | |
1554 | } | |
1555 | } | |
1556 | ||
eb1d1641 HX |
1557 | now = jiffies; |
1558 | time = now + br->multicast_last_member_count * | |
1559 | br->multicast_last_member_interval; | |
1560 | ||
1561 | if (!port) { | |
454594f3 | 1562 | if (mp->mglist && |
eb1d1641 HX |
1563 | (timer_pending(&mp->timer) ? |
1564 | time_after(mp->timer.expires, time) : | |
1565 | try_to_del_timer_sync(&mp->timer) >= 0)) { | |
1566 | mod_timer(&mp->timer, time); | |
eb1d1641 | 1567 | } |
454594f3 LL |
1568 | |
1569 | goto out; | |
1570 | } | |
1571 | ||
1572 | for (p = mlock_dereference(mp->ports, br); | |
1573 | p != NULL; | |
1574 | p = mlock_dereference(p->next, br)) { | |
1575 | if (p->port != port) | |
1576 | continue; | |
1577 | ||
1578 | if (!hlist_unhashed(&p->mglist) && | |
1579 | (timer_pending(&p->timer) ? | |
1580 | time_after(p->timer.expires, time) : | |
1581 | try_to_del_timer_sync(&p->timer) >= 0)) { | |
1582 | mod_timer(&p->timer, time); | |
1583 | } | |
1584 | ||
1585 | break; | |
eb1d1641 | 1586 | } |
eb1d1641 HX |
1587 | out: |
1588 | spin_unlock(&br->multicast_lock); | |
1589 | } | |
1590 | ||
8ef2a9a5 YH |
1591 | static void br_ip4_multicast_leave_group(struct net_bridge *br, |
1592 | struct net_bridge_port *port, | |
b0e9a30d VY |
1593 | __be32 group, |
1594 | __u16 vid) | |
8ef2a9a5 YH |
1595 | { |
1596 | struct br_ip br_group; | |
90010b36 | 1597 | struct bridge_mcast_own_query *own_query; |
8ef2a9a5 YH |
1598 | |
1599 | if (ipv4_is_local_multicast(group)) | |
1600 | return; | |
1601 | ||
90010b36 LL |
1602 | own_query = port ? &port->ip4_own_query : &br->ip4_own_query; |
1603 | ||
8ef2a9a5 YH |
1604 | br_group.u.ip4 = group; |
1605 | br_group.proto = htons(ETH_P_IP); | |
b0e9a30d | 1606 | br_group.vid = vid; |
8ef2a9a5 | 1607 | |
90010b36 LL |
1608 | br_multicast_leave_group(br, port, &br_group, &br->ip4_other_query, |
1609 | own_query); | |
8ef2a9a5 YH |
1610 | } |
1611 | ||
dfd56b8b | 1612 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
1613 | static void br_ip6_multicast_leave_group(struct net_bridge *br, |
1614 | struct net_bridge_port *port, | |
b0e9a30d VY |
1615 | const struct in6_addr *group, |
1616 | __u16 vid) | |
08b202b6 YH |
1617 | { |
1618 | struct br_ip br_group; | |
90010b36 | 1619 | struct bridge_mcast_own_query *own_query; |
08b202b6 | 1620 | |
3c3769e6 | 1621 | if (ipv6_addr_is_ll_all_nodes(group)) |
08b202b6 YH |
1622 | return; |
1623 | ||
90010b36 LL |
1624 | own_query = port ? &port->ip6_own_query : &br->ip6_own_query; |
1625 | ||
4e3fd7a0 | 1626 | br_group.u.ip6 = *group; |
08b202b6 | 1627 | br_group.proto = htons(ETH_P_IPV6); |
b0e9a30d | 1628 | br_group.vid = vid; |
08b202b6 | 1629 | |
90010b36 LL |
1630 | br_multicast_leave_group(br, port, &br_group, &br->ip6_other_query, |
1631 | own_query); | |
08b202b6 YH |
1632 | } |
1633 | #endif | |
8ef2a9a5 | 1634 | |
1080ab95 NA |
1635 | static void br_multicast_err_count(const struct net_bridge *br, |
1636 | const struct net_bridge_port *p, | |
1637 | __be16 proto) | |
1638 | { | |
1639 | struct bridge_mcast_stats __percpu *stats; | |
1640 | struct bridge_mcast_stats *pstats; | |
1641 | ||
1642 | if (!br->multicast_stats_enabled) | |
1643 | return; | |
1644 | ||
1645 | if (p) | |
1646 | stats = p->mcast_stats; | |
1647 | else | |
1648 | stats = br->mcast_stats; | |
1649 | if (WARN_ON(!stats)) | |
1650 | return; | |
1651 | ||
1652 | pstats = this_cpu_ptr(stats); | |
1653 | ||
1654 | u64_stats_update_begin(&pstats->syncp); | |
1655 | switch (proto) { | |
1656 | case htons(ETH_P_IP): | |
1657 | pstats->mstats.igmp_parse_errors++; | |
1658 | break; | |
1659 | #if IS_ENABLED(CONFIG_IPV6) | |
1660 | case htons(ETH_P_IPV6): | |
1661 | pstats->mstats.mld_parse_errors++; | |
1662 | break; | |
1663 | #endif | |
1664 | } | |
1665 | u64_stats_update_end(&pstats->syncp); | |
1666 | } | |
1667 | ||
91b02d3d NA |
1668 | static void br_multicast_pim(struct net_bridge *br, |
1669 | struct net_bridge_port *port, | |
1670 | const struct sk_buff *skb) | |
1671 | { | |
1672 | unsigned int offset = skb_transport_offset(skb); | |
1673 | struct pimhdr *pimhdr, _pimhdr; | |
1674 | ||
1675 | pimhdr = skb_header_pointer(skb, offset, sizeof(_pimhdr), &_pimhdr); | |
1676 | if (!pimhdr || pim_hdr_version(pimhdr) != PIM_VERSION || | |
1677 | pim_hdr_type(pimhdr) != PIM_TYPE_HELLO) | |
1678 | return; | |
1679 | ||
1680 | br_multicast_mark_router(br, port); | |
1681 | } | |
1682 | ||
eb1d1641 HX |
1683 | static int br_multicast_ipv4_rcv(struct net_bridge *br, |
1684 | struct net_bridge_port *port, | |
06499098 VY |
1685 | struct sk_buff *skb, |
1686 | u16 vid) | |
eb1d1641 | 1687 | { |
9afd85c9 | 1688 | struct sk_buff *skb_trimmed = NULL; |
eb1d1641 | 1689 | struct igmphdr *ih; |
eb1d1641 HX |
1690 | int err; |
1691 | ||
9afd85c9 | 1692 | err = ip_mc_check_igmp(skb, &skb_trimmed); |
eb1d1641 | 1693 | |
9afd85c9 | 1694 | if (err == -ENOMSG) { |
91b02d3d | 1695 | if (!ipv4_is_local_multicast(ip_hdr(skb)->daddr)) { |
bd4265fe | 1696 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; |
91b02d3d NA |
1697 | } else if (pim_ipv4_all_pim_routers(ip_hdr(skb)->daddr)) { |
1698 | if (ip_hdr(skb)->protocol == IPPROTO_PIM) | |
1699 | br_multicast_pim(br, port, skb); | |
1700 | } | |
eb1d1641 | 1701 | return 0; |
9afd85c9 | 1702 | } else if (err < 0) { |
1080ab95 | 1703 | br_multicast_err_count(br, port, skb->protocol); |
9afd85c9 | 1704 | return err; |
bd4265fe | 1705 | } |
eb1d1641 | 1706 | |
9afd85c9 | 1707 | ih = igmp_hdr(skb); |
1080ab95 | 1708 | BR_INPUT_SKB_CB(skb)->igmp = ih->type; |
eb1d1641 HX |
1709 | |
1710 | switch (ih->type) { | |
1711 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
1712 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
62b2bcb4 | 1713 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; |
b0e9a30d | 1714 | err = br_ip4_multicast_add_group(br, port, ih->group, vid); |
eb1d1641 HX |
1715 | break; |
1716 | case IGMPV3_HOST_MEMBERSHIP_REPORT: | |
9afd85c9 | 1717 | err = br_ip4_multicast_igmp3_report(br, port, skb_trimmed, vid); |
eb1d1641 HX |
1718 | break; |
1719 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
9afd85c9 | 1720 | err = br_ip4_multicast_query(br, port, skb_trimmed, vid); |
eb1d1641 HX |
1721 | break; |
1722 | case IGMP_HOST_LEAVE_MESSAGE: | |
b0e9a30d | 1723 | br_ip4_multicast_leave_group(br, port, ih->group, vid); |
eb1d1641 HX |
1724 | break; |
1725 | } | |
1726 | ||
a516993f | 1727 | if (skb_trimmed && skb_trimmed != skb) |
9afd85c9 LL |
1728 | kfree_skb(skb_trimmed); |
1729 | ||
a65056ec | 1730 | br_multicast_count(br, port, skb, BR_INPUT_SKB_CB(skb)->igmp, |
1080ab95 NA |
1731 | BR_MCAST_DIR_RX); |
1732 | ||
eb1d1641 HX |
1733 | return err; |
1734 | } | |
1735 | ||
dfd56b8b | 1736 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 YH |
1737 | static int br_multicast_ipv6_rcv(struct net_bridge *br, |
1738 | struct net_bridge_port *port, | |
06499098 VY |
1739 | struct sk_buff *skb, |
1740 | u16 vid) | |
08b202b6 | 1741 | { |
9afd85c9 LL |
1742 | struct sk_buff *skb_trimmed = NULL; |
1743 | struct mld_msg *mld; | |
08b202b6 YH |
1744 | int err; |
1745 | ||
9afd85c9 | 1746 | err = ipv6_mc_check_mld(skb, &skb_trimmed); |
08b202b6 | 1747 | |
9afd85c9 LL |
1748 | if (err == -ENOMSG) { |
1749 | if (!ipv6_addr_is_ll_all_nodes(&ipv6_hdr(skb)->daddr)) | |
1750 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; | |
08b202b6 | 1751 | return 0; |
9afd85c9 | 1752 | } else if (err < 0) { |
1080ab95 | 1753 | br_multicast_err_count(br, port, skb->protocol); |
9afd85c9 | 1754 | return err; |
08b202b6 YH |
1755 | } |
1756 | ||
9afd85c9 | 1757 | mld = (struct mld_msg *)skb_transport_header(skb); |
1080ab95 | 1758 | BR_INPUT_SKB_CB(skb)->igmp = mld->mld_type; |
08b202b6 | 1759 | |
9afd85c9 | 1760 | switch (mld->mld_type) { |
08b202b6 | 1761 | case ICMPV6_MGM_REPORT: |
fc2af6c7 | 1762 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; |
b0e9a30d | 1763 | err = br_ip6_multicast_add_group(br, port, &mld->mld_mca, vid); |
08b202b6 | 1764 | break; |
08b202b6 | 1765 | case ICMPV6_MLD2_REPORT: |
9afd85c9 | 1766 | err = br_ip6_multicast_mld2_report(br, port, skb_trimmed, vid); |
08b202b6 YH |
1767 | break; |
1768 | case ICMPV6_MGM_QUERY: | |
9afd85c9 | 1769 | err = br_ip6_multicast_query(br, port, skb_trimmed, vid); |
08b202b6 YH |
1770 | break; |
1771 | case ICMPV6_MGM_REDUCTION: | |
b0e9a30d | 1772 | br_ip6_multicast_leave_group(br, port, &mld->mld_mca, vid); |
9afd85c9 | 1773 | break; |
08b202b6 YH |
1774 | } |
1775 | ||
a516993f | 1776 | if (skb_trimmed && skb_trimmed != skb) |
9afd85c9 LL |
1777 | kfree_skb(skb_trimmed); |
1778 | ||
a65056ec | 1779 | br_multicast_count(br, port, skb, BR_INPUT_SKB_CB(skb)->igmp, |
1080ab95 NA |
1780 | BR_MCAST_DIR_RX); |
1781 | ||
08b202b6 YH |
1782 | return err; |
1783 | } | |
1784 | #endif | |
1785 | ||
eb1d1641 | 1786 | int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, |
06499098 | 1787 | struct sk_buff *skb, u16 vid) |
eb1d1641 | 1788 | { |
1080ab95 NA |
1789 | int ret = 0; |
1790 | ||
1fafc7a9 YH |
1791 | BR_INPUT_SKB_CB(skb)->igmp = 0; |
1792 | BR_INPUT_SKB_CB(skb)->mrouters_only = 0; | |
1793 | ||
eb1d1641 HX |
1794 | if (br->multicast_disabled) |
1795 | return 0; | |
1796 | ||
1797 | switch (skb->protocol) { | |
1798 | case htons(ETH_P_IP): | |
1080ab95 NA |
1799 | ret = br_multicast_ipv4_rcv(br, port, skb, vid); |
1800 | break; | |
dfd56b8b | 1801 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 1802 | case htons(ETH_P_IPV6): |
1080ab95 NA |
1803 | ret = br_multicast_ipv6_rcv(br, port, skb, vid); |
1804 | break; | |
08b202b6 | 1805 | #endif |
eb1d1641 HX |
1806 | } |
1807 | ||
1080ab95 | 1808 | return ret; |
eb1d1641 HX |
1809 | } |
1810 | ||
cc0fdd80 | 1811 | static void br_multicast_query_expired(struct net_bridge *br, |
2cd41431 LL |
1812 | struct bridge_mcast_own_query *query, |
1813 | struct bridge_mcast_querier *querier) | |
cc0fdd80 LL |
1814 | { |
1815 | spin_lock(&br->multicast_lock); | |
1816 | if (query->startup_sent < br->multicast_startup_query_count) | |
1817 | query->startup_sent++; | |
1818 | ||
71d9f614 | 1819 | RCU_INIT_POINTER(querier->port, NULL); |
cc0fdd80 LL |
1820 | br_multicast_send_query(br, NULL, query); |
1821 | spin_unlock(&br->multicast_lock); | |
1822 | } | |
1823 | ||
1824 | static void br_ip4_multicast_query_expired(unsigned long data) | |
eb1d1641 HX |
1825 | { |
1826 | struct net_bridge *br = (void *)data; | |
1827 | ||
2cd41431 | 1828 | br_multicast_query_expired(br, &br->ip4_own_query, &br->ip4_querier); |
cc0fdd80 | 1829 | } |
eb1d1641 | 1830 | |
cc0fdd80 LL |
1831 | #if IS_ENABLED(CONFIG_IPV6) |
1832 | static void br_ip6_multicast_query_expired(unsigned long data) | |
1833 | { | |
1834 | struct net_bridge *br = (void *)data; | |
eb1d1641 | 1835 | |
2cd41431 | 1836 | br_multicast_query_expired(br, &br->ip6_own_query, &br->ip6_querier); |
eb1d1641 | 1837 | } |
cc0fdd80 | 1838 | #endif |
eb1d1641 HX |
1839 | |
1840 | void br_multicast_init(struct net_bridge *br) | |
1841 | { | |
1842 | br->hash_elasticity = 4; | |
1843 | br->hash_max = 512; | |
1844 | ||
5e923585 | 1845 | br->multicast_igmp_version = 2; |
7f0aec7a | 1846 | br->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; |
c5c23260 | 1847 | br->multicast_querier = 0; |
1c8ad5bf | 1848 | br->multicast_query_use_ifaddr = 0; |
eb1d1641 HX |
1849 | br->multicast_last_member_count = 2; |
1850 | br->multicast_startup_query_count = 2; | |
1851 | ||
1852 | br->multicast_last_member_interval = HZ; | |
1853 | br->multicast_query_response_interval = 10 * HZ; | |
1854 | br->multicast_startup_query_interval = 125 * HZ / 4; | |
1855 | br->multicast_query_interval = 125 * HZ; | |
1856 | br->multicast_querier_interval = 255 * HZ; | |
1857 | br->multicast_membership_interval = 260 * HZ; | |
1858 | ||
90010b36 | 1859 | br->ip4_other_query.delay_time = 0; |
2cd41431 | 1860 | br->ip4_querier.port = NULL; |
cc0fdd80 | 1861 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 1862 | br->ip6_other_query.delay_time = 0; |
2cd41431 | 1863 | br->ip6_querier.port = NULL; |
cc0fdd80 | 1864 | #endif |
0888d5f3 | 1865 | br->has_ipv6_addr = 1; |
b00589af | 1866 | |
eb1d1641 HX |
1867 | spin_lock_init(&br->multicast_lock); |
1868 | setup_timer(&br->multicast_router_timer, | |
1869 | br_multicast_local_router_expired, 0); | |
90010b36 LL |
1870 | setup_timer(&br->ip4_other_query.timer, |
1871 | br_ip4_multicast_querier_expired, (unsigned long)br); | |
1872 | setup_timer(&br->ip4_own_query.timer, br_ip4_multicast_query_expired, | |
eb1d1641 | 1873 | (unsigned long)br); |
cc0fdd80 | 1874 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
1875 | setup_timer(&br->ip6_other_query.timer, |
1876 | br_ip6_multicast_querier_expired, (unsigned long)br); | |
1877 | setup_timer(&br->ip6_own_query.timer, br_ip6_multicast_query_expired, | |
cc0fdd80 LL |
1878 | (unsigned long)br); |
1879 | #endif | |
eb1d1641 HX |
1880 | } |
1881 | ||
cc0fdd80 | 1882 | static void __br_multicast_open(struct net_bridge *br, |
90010b36 | 1883 | struct bridge_mcast_own_query *query) |
eb1d1641 | 1884 | { |
cc0fdd80 | 1885 | query->startup_sent = 0; |
eb1d1641 HX |
1886 | |
1887 | if (br->multicast_disabled) | |
1888 | return; | |
1889 | ||
cc0fdd80 LL |
1890 | mod_timer(&query->timer, jiffies); |
1891 | } | |
1892 | ||
1893 | void br_multicast_open(struct net_bridge *br) | |
1894 | { | |
90010b36 | 1895 | __br_multicast_open(br, &br->ip4_own_query); |
cc0fdd80 | 1896 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 | 1897 | __br_multicast_open(br, &br->ip6_own_query); |
cc0fdd80 | 1898 | #endif |
eb1d1641 HX |
1899 | } |
1900 | ||
1901 | void br_multicast_stop(struct net_bridge *br) | |
1902 | { | |
eb1d1641 | 1903 | del_timer_sync(&br->multicast_router_timer); |
90010b36 LL |
1904 | del_timer_sync(&br->ip4_other_query.timer); |
1905 | del_timer_sync(&br->ip4_own_query.timer); | |
cc0fdd80 | 1906 | #if IS_ENABLED(CONFIG_IPV6) |
90010b36 LL |
1907 | del_timer_sync(&br->ip6_other_query.timer); |
1908 | del_timer_sync(&br->ip6_own_query.timer); | |
cc0fdd80 | 1909 | #endif |
e10177ab SA |
1910 | } |
1911 | ||
1912 | void br_multicast_dev_del(struct net_bridge *br) | |
1913 | { | |
1914 | struct net_bridge_mdb_htable *mdb; | |
1915 | struct net_bridge_mdb_entry *mp; | |
1916 | struct hlist_node *n; | |
1917 | u32 ver; | |
1918 | int i; | |
eb1d1641 HX |
1919 | |
1920 | spin_lock_bh(&br->multicast_lock); | |
e8051688 | 1921 | mdb = mlock_dereference(br->mdb, br); |
eb1d1641 HX |
1922 | if (!mdb) |
1923 | goto out; | |
1924 | ||
1925 | br->mdb = NULL; | |
1926 | ||
1927 | ver = mdb->ver; | |
1928 | for (i = 0; i < mdb->max; i++) { | |
b67bfe0d | 1929 | hlist_for_each_entry_safe(mp, n, &mdb->mhash[i], |
eb1d1641 HX |
1930 | hlist[ver]) { |
1931 | del_timer(&mp->timer); | |
eb1d1641 HX |
1932 | call_rcu_bh(&mp->rcu, br_multicast_free_group); |
1933 | } | |
1934 | } | |
1935 | ||
1936 | if (mdb->old) { | |
1937 | spin_unlock_bh(&br->multicast_lock); | |
10cc2b50 | 1938 | rcu_barrier_bh(); |
eb1d1641 HX |
1939 | spin_lock_bh(&br->multicast_lock); |
1940 | WARN_ON(mdb->old); | |
1941 | } | |
1942 | ||
1943 | mdb->old = mdb; | |
1944 | call_rcu_bh(&mdb->rcu, br_mdb_free); | |
1945 | ||
1946 | out: | |
1947 | spin_unlock_bh(&br->multicast_lock); | |
1080ab95 NA |
1948 | |
1949 | free_percpu(br->mcast_stats); | |
eb1d1641 | 1950 | } |
0909e117 HX |
1951 | |
1952 | int br_multicast_set_router(struct net_bridge *br, unsigned long val) | |
1953 | { | |
6ae4ae8e | 1954 | int err = -EINVAL; |
0909e117 HX |
1955 | |
1956 | spin_lock_bh(&br->multicast_lock); | |
0909e117 HX |
1957 | |
1958 | switch (val) { | |
7f0aec7a NA |
1959 | case MDB_RTR_TYPE_DISABLED: |
1960 | case MDB_RTR_TYPE_PERM: | |
0909e117 HX |
1961 | del_timer(&br->multicast_router_timer); |
1962 | /* fall through */ | |
7f0aec7a | 1963 | case MDB_RTR_TYPE_TEMP_QUERY: |
0909e117 HX |
1964 | br->multicast_router = val; |
1965 | err = 0; | |
1966 | break; | |
0909e117 HX |
1967 | } |
1968 | ||
0909e117 HX |
1969 | spin_unlock_bh(&br->multicast_lock); |
1970 | ||
1971 | return err; | |
1972 | } | |
1973 | ||
7f0aec7a NA |
1974 | static void __del_port_router(struct net_bridge_port *p) |
1975 | { | |
1976 | if (hlist_unhashed(&p->rlist)) | |
1977 | return; | |
1978 | hlist_del_init_rcu(&p->rlist); | |
1979 | br_rtr_notify(p->br->dev, p, RTM_DELMDB); | |
1980 | } | |
1981 | ||
0909e117 HX |
1982 | int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) |
1983 | { | |
1984 | struct net_bridge *br = p->br; | |
a55d8246 | 1985 | unsigned long now = jiffies; |
6ae4ae8e | 1986 | int err = -EINVAL; |
0909e117 HX |
1987 | |
1988 | spin_lock(&br->multicast_lock); | |
4950cfd1 | 1989 | if (p->multicast_router == val) { |
a55d8246 NA |
1990 | /* Refresh the temp router port timer */ |
1991 | if (p->multicast_router == MDB_RTR_TYPE_TEMP) | |
1992 | mod_timer(&p->multicast_router_timer, | |
1993 | now + br->multicast_querier_interval); | |
4950cfd1 NA |
1994 | err = 0; |
1995 | goto unlock; | |
1996 | } | |
0909e117 | 1997 | switch (val) { |
7f0aec7a NA |
1998 | case MDB_RTR_TYPE_DISABLED: |
1999 | p->multicast_router = MDB_RTR_TYPE_DISABLED; | |
2000 | __del_port_router(p); | |
2001 | del_timer(&p->multicast_router_timer); | |
2002 | break; | |
2003 | case MDB_RTR_TYPE_TEMP_QUERY: | |
2004 | p->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; | |
2005 | __del_port_router(p); | |
2006 | break; | |
2007 | case MDB_RTR_TYPE_PERM: | |
2008 | p->multicast_router = MDB_RTR_TYPE_PERM; | |
0909e117 | 2009 | del_timer(&p->multicast_router_timer); |
0909e117 HX |
2010 | br_multicast_add_router(br, p); |
2011 | break; | |
a55d8246 NA |
2012 | case MDB_RTR_TYPE_TEMP: |
2013 | p->multicast_router = MDB_RTR_TYPE_TEMP; | |
2014 | br_multicast_mark_router(br, p); | |
2015 | break; | |
7f0aec7a NA |
2016 | default: |
2017 | goto unlock; | |
0909e117 | 2018 | } |
7f0aec7a NA |
2019 | err = 0; |
2020 | unlock: | |
0909e117 HX |
2021 | spin_unlock(&br->multicast_lock); |
2022 | ||
2023 | return err; | |
2024 | } | |
561f1103 | 2025 | |
cc0fdd80 | 2026 | static void br_multicast_start_querier(struct net_bridge *br, |
90010b36 | 2027 | struct bridge_mcast_own_query *query) |
561f1103 HX |
2028 | { |
2029 | struct net_bridge_port *port; | |
74857216 | 2030 | |
cc0fdd80 | 2031 | __br_multicast_open(br, query); |
74857216 HX |
2032 | |
2033 | list_for_each_entry(port, &br->port_list, list) { | |
2034 | if (port->state == BR_STATE_DISABLED || | |
2035 | port->state == BR_STATE_BLOCKING) | |
2036 | continue; | |
2037 | ||
90010b36 LL |
2038 | if (query == &br->ip4_own_query) |
2039 | br_multicast_enable(&port->ip4_own_query); | |
cc0fdd80 LL |
2040 | #if IS_ENABLED(CONFIG_IPV6) |
2041 | else | |
90010b36 | 2042 | br_multicast_enable(&port->ip6_own_query); |
cc0fdd80 | 2043 | #endif |
74857216 HX |
2044 | } |
2045 | } | |
2046 | ||
2047 | int br_multicast_toggle(struct net_bridge *br, unsigned long val) | |
2048 | { | |
e8051688 | 2049 | struct net_bridge_mdb_htable *mdb; |
7cb3f921 NA |
2050 | struct net_bridge_port *port; |
2051 | int err = 0; | |
561f1103 | 2052 | |
ef5e0d82 | 2053 | spin_lock_bh(&br->multicast_lock); |
561f1103 HX |
2054 | if (br->multicast_disabled == !val) |
2055 | goto unlock; | |
2056 | ||
2057 | br->multicast_disabled = !val; | |
2058 | if (br->multicast_disabled) | |
2059 | goto unlock; | |
2060 | ||
3a7fda06 HX |
2061 | if (!netif_running(br->dev)) |
2062 | goto unlock; | |
2063 | ||
e8051688 ED |
2064 | mdb = mlock_dereference(br->mdb, br); |
2065 | if (mdb) { | |
2066 | if (mdb->old) { | |
561f1103 HX |
2067 | err = -EEXIST; |
2068 | rollback: | |
2069 | br->multicast_disabled = !!val; | |
2070 | goto unlock; | |
2071 | } | |
2072 | ||
e8051688 | 2073 | err = br_mdb_rehash(&br->mdb, mdb->max, |
561f1103 HX |
2074 | br->hash_elasticity); |
2075 | if (err) | |
2076 | goto rollback; | |
2077 | } | |
2078 | ||
7cb3f921 NA |
2079 | br_multicast_open(br); |
2080 | list_for_each_entry(port, &br->port_list, list) | |
2081 | __br_multicast_enable_port(port); | |
561f1103 HX |
2082 | |
2083 | unlock: | |
ef5e0d82 | 2084 | spin_unlock_bh(&br->multicast_lock); |
561f1103 HX |
2085 | |
2086 | return err; | |
2087 | } | |
b195167f | 2088 | |
c5c23260 HX |
2089 | int br_multicast_set_querier(struct net_bridge *br, unsigned long val) |
2090 | { | |
b00589af LL |
2091 | unsigned long max_delay; |
2092 | ||
c5c23260 HX |
2093 | val = !!val; |
2094 | ||
2095 | spin_lock_bh(&br->multicast_lock); | |
2096 | if (br->multicast_querier == val) | |
2097 | goto unlock; | |
2098 | ||
2099 | br->multicast_querier = val; | |
b00589af LL |
2100 | if (!val) |
2101 | goto unlock; | |
2102 | ||
2103 | max_delay = br->multicast_query_response_interval; | |
b00589af | 2104 | |
90010b36 LL |
2105 | if (!timer_pending(&br->ip4_other_query.timer)) |
2106 | br->ip4_other_query.delay_time = jiffies + max_delay; | |
cc0fdd80 | 2107 | |
90010b36 | 2108 | br_multicast_start_querier(br, &br->ip4_own_query); |
cc0fdd80 LL |
2109 | |
2110 | #if IS_ENABLED(CONFIG_IPV6) | |
90010b36 LL |
2111 | if (!timer_pending(&br->ip6_other_query.timer)) |
2112 | br->ip6_other_query.delay_time = jiffies + max_delay; | |
cc0fdd80 | 2113 | |
90010b36 | 2114 | br_multicast_start_querier(br, &br->ip6_own_query); |
cc0fdd80 | 2115 | #endif |
c5c23260 HX |
2116 | |
2117 | unlock: | |
2118 | spin_unlock_bh(&br->multicast_lock); | |
2119 | ||
2120 | return 0; | |
2121 | } | |
2122 | ||
b195167f HX |
2123 | int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val) |
2124 | { | |
6ae4ae8e | 2125 | int err = -EINVAL; |
b195167f | 2126 | u32 old; |
e8051688 | 2127 | struct net_bridge_mdb_htable *mdb; |
b195167f | 2128 | |
fe0d692b | 2129 | spin_lock_bh(&br->multicast_lock); |
b195167f HX |
2130 | if (!is_power_of_2(val)) |
2131 | goto unlock; | |
e8051688 ED |
2132 | |
2133 | mdb = mlock_dereference(br->mdb, br); | |
2134 | if (mdb && val < mdb->size) | |
b195167f HX |
2135 | goto unlock; |
2136 | ||
2137 | err = 0; | |
2138 | ||
2139 | old = br->hash_max; | |
2140 | br->hash_max = val; | |
2141 | ||
e8051688 ED |
2142 | if (mdb) { |
2143 | if (mdb->old) { | |
b195167f HX |
2144 | err = -EEXIST; |
2145 | rollback: | |
2146 | br->hash_max = old; | |
2147 | goto unlock; | |
2148 | } | |
2149 | ||
2150 | err = br_mdb_rehash(&br->mdb, br->hash_max, | |
2151 | br->hash_elasticity); | |
2152 | if (err) | |
2153 | goto rollback; | |
2154 | } | |
2155 | ||
2156 | unlock: | |
fe0d692b | 2157 | spin_unlock_bh(&br->multicast_lock); |
b195167f HX |
2158 | |
2159 | return err; | |
2160 | } | |
07f8ac4a | 2161 | |
5e923585 NA |
2162 | int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val) |
2163 | { | |
2164 | /* Currently we support only version 2 and 3 */ | |
2165 | switch (val) { | |
2166 | case 2: | |
2167 | case 3: | |
2168 | break; | |
2169 | default: | |
2170 | return -EINVAL; | |
2171 | } | |
2172 | ||
2173 | spin_lock_bh(&br->multicast_lock); | |
2174 | br->multicast_igmp_version = val; | |
2175 | spin_unlock_bh(&br->multicast_lock); | |
2176 | ||
2177 | return 0; | |
2178 | } | |
2179 | ||
07f8ac4a LL |
2180 | /** |
2181 | * br_multicast_list_adjacent - Returns snooped multicast addresses | |
2182 | * @dev: The bridge port adjacent to which to retrieve addresses | |
2183 | * @br_ip_list: The list to store found, snooped multicast IP addresses in | |
2184 | * | |
2185 | * Creates a list of IP addresses (struct br_ip_list) sensed by the multicast | |
2186 | * snooping feature on all bridge ports of dev's bridge device, excluding | |
2187 | * the addresses from dev itself. | |
2188 | * | |
2189 | * Returns the number of items added to br_ip_list. | |
2190 | * | |
2191 | * Notes: | |
2192 | * - br_ip_list needs to be initialized by caller | |
2193 | * - br_ip_list might contain duplicates in the end | |
2194 | * (needs to be taken care of by caller) | |
2195 | * - br_ip_list needs to be freed by caller | |
2196 | */ | |
2197 | int br_multicast_list_adjacent(struct net_device *dev, | |
2198 | struct list_head *br_ip_list) | |
2199 | { | |
2200 | struct net_bridge *br; | |
2201 | struct net_bridge_port *port; | |
2202 | struct net_bridge_port_group *group; | |
2203 | struct br_ip_list *entry; | |
2204 | int count = 0; | |
2205 | ||
2206 | rcu_read_lock(); | |
2207 | if (!br_ip_list || !br_port_exists(dev)) | |
2208 | goto unlock; | |
2209 | ||
2210 | port = br_port_get_rcu(dev); | |
2211 | if (!port || !port->br) | |
2212 | goto unlock; | |
2213 | ||
2214 | br = port->br; | |
2215 | ||
2216 | list_for_each_entry_rcu(port, &br->port_list, list) { | |
2217 | if (!port->dev || port->dev == dev) | |
2218 | continue; | |
2219 | ||
2220 | hlist_for_each_entry_rcu(group, &port->mglist, mglist) { | |
2221 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
2222 | if (!entry) | |
2223 | goto unlock; | |
2224 | ||
2225 | entry->addr = group->addr; | |
2226 | list_add(&entry->list, br_ip_list); | |
2227 | count++; | |
2228 | } | |
2229 | } | |
2230 | ||
2231 | unlock: | |
2232 | rcu_read_unlock(); | |
2233 | return count; | |
2234 | } | |
2235 | EXPORT_SYMBOL_GPL(br_multicast_list_adjacent); | |
2cd41431 | 2236 | |
c34963e2 LL |
2237 | /** |
2238 | * br_multicast_has_querier_anywhere - Checks for a querier on a bridge | |
2239 | * @dev: The bridge port providing the bridge on which to check for a querier | |
2240 | * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 | |
2241 | * | |
2242 | * Checks whether the given interface has a bridge on top and if so returns | |
2243 | * true if a valid querier exists anywhere on the bridged link layer. | |
2244 | * Otherwise returns false. | |
2245 | */ | |
2246 | bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto) | |
2247 | { | |
2248 | struct net_bridge *br; | |
2249 | struct net_bridge_port *port; | |
2250 | struct ethhdr eth; | |
2251 | bool ret = false; | |
2252 | ||
2253 | rcu_read_lock(); | |
2254 | if (!br_port_exists(dev)) | |
2255 | goto unlock; | |
2256 | ||
2257 | port = br_port_get_rcu(dev); | |
2258 | if (!port || !port->br) | |
2259 | goto unlock; | |
2260 | ||
2261 | br = port->br; | |
2262 | ||
2263 | memset(ð, 0, sizeof(eth)); | |
2264 | eth.h_proto = htons(proto); | |
2265 | ||
2266 | ret = br_multicast_querier_exists(br, ð); | |
2267 | ||
2268 | unlock: | |
2269 | rcu_read_unlock(); | |
2270 | return ret; | |
2271 | } | |
2272 | EXPORT_SYMBOL_GPL(br_multicast_has_querier_anywhere); | |
2273 | ||
2cd41431 LL |
2274 | /** |
2275 | * br_multicast_has_querier_adjacent - Checks for a querier behind a bridge port | |
2276 | * @dev: The bridge port adjacent to which to check for a querier | |
2277 | * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 | |
2278 | * | |
2279 | * Checks whether the given interface has a bridge on top and if so returns | |
2280 | * true if a selected querier is behind one of the other ports of this | |
2281 | * bridge. Otherwise returns false. | |
2282 | */ | |
2283 | bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto) | |
2284 | { | |
2285 | struct net_bridge *br; | |
2286 | struct net_bridge_port *port; | |
2287 | bool ret = false; | |
2288 | ||
2289 | rcu_read_lock(); | |
2290 | if (!br_port_exists(dev)) | |
2291 | goto unlock; | |
2292 | ||
2293 | port = br_port_get_rcu(dev); | |
2294 | if (!port || !port->br) | |
2295 | goto unlock; | |
2296 | ||
2297 | br = port->br; | |
2298 | ||
2299 | switch (proto) { | |
2300 | case ETH_P_IP: | |
2301 | if (!timer_pending(&br->ip4_other_query.timer) || | |
2302 | rcu_dereference(br->ip4_querier.port) == port) | |
2303 | goto unlock; | |
2304 | break; | |
3993c4e1 | 2305 | #if IS_ENABLED(CONFIG_IPV6) |
2cd41431 LL |
2306 | case ETH_P_IPV6: |
2307 | if (!timer_pending(&br->ip6_other_query.timer) || | |
2308 | rcu_dereference(br->ip6_querier.port) == port) | |
2309 | goto unlock; | |
2310 | break; | |
3993c4e1 | 2311 | #endif |
2cd41431 LL |
2312 | default: |
2313 | goto unlock; | |
2314 | } | |
2315 | ||
2316 | ret = true; | |
2317 | unlock: | |
2318 | rcu_read_unlock(); | |
2319 | return ret; | |
2320 | } | |
2321 | EXPORT_SYMBOL_GPL(br_multicast_has_querier_adjacent); | |
1080ab95 NA |
2322 | |
2323 | static void br_mcast_stats_add(struct bridge_mcast_stats __percpu *stats, | |
a65056ec | 2324 | const struct sk_buff *skb, u8 type, u8 dir) |
1080ab95 NA |
2325 | { |
2326 | struct bridge_mcast_stats *pstats = this_cpu_ptr(stats); | |
a65056ec NA |
2327 | __be16 proto = skb->protocol; |
2328 | unsigned int t_len; | |
1080ab95 NA |
2329 | |
2330 | u64_stats_update_begin(&pstats->syncp); | |
2331 | switch (proto) { | |
2332 | case htons(ETH_P_IP): | |
a65056ec | 2333 | t_len = ntohs(ip_hdr(skb)->tot_len) - ip_hdrlen(skb); |
1080ab95 NA |
2334 | switch (type) { |
2335 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2336 | pstats->mstats.igmp_v1reports[dir]++; | |
2337 | break; | |
2338 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
2339 | pstats->mstats.igmp_v2reports[dir]++; | |
2340 | break; | |
2341 | case IGMPV3_HOST_MEMBERSHIP_REPORT: | |
2342 | pstats->mstats.igmp_v3reports[dir]++; | |
2343 | break; | |
2344 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
a65056ec NA |
2345 | if (t_len != sizeof(struct igmphdr)) { |
2346 | pstats->mstats.igmp_v3queries[dir]++; | |
2347 | } else { | |
2348 | unsigned int offset = skb_transport_offset(skb); | |
2349 | struct igmphdr *ih, _ihdr; | |
2350 | ||
2351 | ih = skb_header_pointer(skb, offset, | |
2352 | sizeof(_ihdr), &_ihdr); | |
2353 | if (!ih) | |
2354 | break; | |
2355 | if (!ih->code) | |
2356 | pstats->mstats.igmp_v1queries[dir]++; | |
2357 | else | |
2358 | pstats->mstats.igmp_v2queries[dir]++; | |
2359 | } | |
1080ab95 NA |
2360 | break; |
2361 | case IGMP_HOST_LEAVE_MESSAGE: | |
2362 | pstats->mstats.igmp_leaves[dir]++; | |
2363 | break; | |
2364 | } | |
2365 | break; | |
2366 | #if IS_ENABLED(CONFIG_IPV6) | |
2367 | case htons(ETH_P_IPV6): | |
a65056ec NA |
2368 | t_len = ntohs(ipv6_hdr(skb)->payload_len) + |
2369 | sizeof(struct ipv6hdr); | |
2370 | t_len -= skb_network_header_len(skb); | |
1080ab95 NA |
2371 | switch (type) { |
2372 | case ICMPV6_MGM_REPORT: | |
2373 | pstats->mstats.mld_v1reports[dir]++; | |
2374 | break; | |
2375 | case ICMPV6_MLD2_REPORT: | |
2376 | pstats->mstats.mld_v2reports[dir]++; | |
2377 | break; | |
2378 | case ICMPV6_MGM_QUERY: | |
a65056ec NA |
2379 | if (t_len != sizeof(struct mld_msg)) |
2380 | pstats->mstats.mld_v2queries[dir]++; | |
2381 | else | |
2382 | pstats->mstats.mld_v1queries[dir]++; | |
1080ab95 NA |
2383 | break; |
2384 | case ICMPV6_MGM_REDUCTION: | |
2385 | pstats->mstats.mld_leaves[dir]++; | |
2386 | break; | |
2387 | } | |
2388 | break; | |
2389 | #endif /* CONFIG_IPV6 */ | |
2390 | } | |
2391 | u64_stats_update_end(&pstats->syncp); | |
2392 | } | |
2393 | ||
2394 | void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p, | |
a65056ec | 2395 | const struct sk_buff *skb, u8 type, u8 dir) |
1080ab95 NA |
2396 | { |
2397 | struct bridge_mcast_stats __percpu *stats; | |
2398 | ||
2399 | /* if multicast_disabled is true then igmp type can't be set */ | |
2400 | if (!type || !br->multicast_stats_enabled) | |
2401 | return; | |
2402 | ||
2403 | if (p) | |
2404 | stats = p->mcast_stats; | |
2405 | else | |
2406 | stats = br->mcast_stats; | |
2407 | if (WARN_ON(!stats)) | |
2408 | return; | |
2409 | ||
a65056ec | 2410 | br_mcast_stats_add(stats, skb, type, dir); |
1080ab95 NA |
2411 | } |
2412 | ||
2413 | int br_multicast_init_stats(struct net_bridge *br) | |
2414 | { | |
2415 | br->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats); | |
2416 | if (!br->mcast_stats) | |
2417 | return -ENOMEM; | |
2418 | ||
2419 | return 0; | |
2420 | } | |
2421 | ||
2422 | static void mcast_stats_add_dir(u64 *dst, u64 *src) | |
2423 | { | |
2424 | dst[BR_MCAST_DIR_RX] += src[BR_MCAST_DIR_RX]; | |
2425 | dst[BR_MCAST_DIR_TX] += src[BR_MCAST_DIR_TX]; | |
2426 | } | |
2427 | ||
2428 | void br_multicast_get_stats(const struct net_bridge *br, | |
2429 | const struct net_bridge_port *p, | |
2430 | struct br_mcast_stats *dest) | |
2431 | { | |
2432 | struct bridge_mcast_stats __percpu *stats; | |
2433 | struct br_mcast_stats tdst; | |
2434 | int i; | |
2435 | ||
2436 | memset(dest, 0, sizeof(*dest)); | |
2437 | if (p) | |
2438 | stats = p->mcast_stats; | |
2439 | else | |
2440 | stats = br->mcast_stats; | |
2441 | if (WARN_ON(!stats)) | |
2442 | return; | |
2443 | ||
2444 | memset(&tdst, 0, sizeof(tdst)); | |
2445 | for_each_possible_cpu(i) { | |
2446 | struct bridge_mcast_stats *cpu_stats = per_cpu_ptr(stats, i); | |
2447 | struct br_mcast_stats temp; | |
2448 | unsigned int start; | |
2449 | ||
2450 | do { | |
2451 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
2452 | memcpy(&temp, &cpu_stats->mstats, sizeof(temp)); | |
2453 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
2454 | ||
a65056ec NA |
2455 | mcast_stats_add_dir(tdst.igmp_v1queries, temp.igmp_v1queries); |
2456 | mcast_stats_add_dir(tdst.igmp_v2queries, temp.igmp_v2queries); | |
2457 | mcast_stats_add_dir(tdst.igmp_v3queries, temp.igmp_v3queries); | |
1080ab95 NA |
2458 | mcast_stats_add_dir(tdst.igmp_leaves, temp.igmp_leaves); |
2459 | mcast_stats_add_dir(tdst.igmp_v1reports, temp.igmp_v1reports); | |
2460 | mcast_stats_add_dir(tdst.igmp_v2reports, temp.igmp_v2reports); | |
2461 | mcast_stats_add_dir(tdst.igmp_v3reports, temp.igmp_v3reports); | |
2462 | tdst.igmp_parse_errors += temp.igmp_parse_errors; | |
2463 | ||
a65056ec NA |
2464 | mcast_stats_add_dir(tdst.mld_v1queries, temp.mld_v1queries); |
2465 | mcast_stats_add_dir(tdst.mld_v2queries, temp.mld_v2queries); | |
1080ab95 NA |
2466 | mcast_stats_add_dir(tdst.mld_leaves, temp.mld_leaves); |
2467 | mcast_stats_add_dir(tdst.mld_v1reports, temp.mld_v1reports); | |
2468 | mcast_stats_add_dir(tdst.mld_v2reports, temp.mld_v2reports); | |
2469 | tdst.mld_parse_errors += temp.mld_parse_errors; | |
2470 | } | |
2471 | memcpy(dest, &tdst, sizeof(*dest)); | |
2472 | } |