Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
eb1d1641 HX |
2 | /* |
3 | * Bridge multicast support. | |
4 | * | |
5 | * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au> | |
eb1d1641 HX |
6 | */ |
7 | ||
8 | #include <linux/err.h> | |
07f8ac4a | 9 | #include <linux/export.h> |
eb1d1641 HX |
10 | #include <linux/if_ether.h> |
11 | #include <linux/igmp.h> | |
4b3087c7 | 12 | #include <linux/in.h> |
eb1d1641 HX |
13 | #include <linux/jhash.h> |
14 | #include <linux/kernel.h> | |
b195167f | 15 | #include <linux/log2.h> |
eb1d1641 HX |
16 | #include <linux/netdevice.h> |
17 | #include <linux/netfilter_bridge.h> | |
18 | #include <linux/random.h> | |
19 | #include <linux/rculist.h> | |
20 | #include <linux/skbuff.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/timer.h> | |
1c8ad5bf | 23 | #include <linux/inetdevice.h> |
91b02d3d | 24 | #include <linux/mroute.h> |
eb1d1641 | 25 | #include <net/ip.h> |
147c1e9b | 26 | #include <net/switchdev.h> |
dfd56b8b | 27 | #if IS_ENABLED(CONFIG_IPV6) |
4b3087c7 | 28 | #include <linux/icmpv6.h> |
08b202b6 YH |
29 | #include <net/ipv6.h> |
30 | #include <net/mld.h> | |
d4c4f07d | 31 | #include <net/ip6_checksum.h> |
3c3769e6 | 32 | #include <net/addrconf.h> |
08b202b6 | 33 | #endif |
eb1d1641 HX |
34 | |
35 | #include "br_private.h" | |
8f07b831 | 36 | #include "br_private_mcast_eht.h" |
eb1d1641 | 37 | |
19e3a9c9 NA |
38 | static const struct rhashtable_params br_mdb_rht_params = { |
39 | .head_offset = offsetof(struct net_bridge_mdb_entry, rhnode), | |
40 | .key_offset = offsetof(struct net_bridge_mdb_entry, addr), | |
41 | .key_len = sizeof(struct br_ip), | |
42 | .automatic_shrinking = true, | |
19e3a9c9 NA |
43 | }; |
44 | ||
085b53c8 NA |
45 | static const struct rhashtable_params br_sg_port_rht_params = { |
46 | .head_offset = offsetof(struct net_bridge_port_group, rhnode), | |
47 | .key_offset = offsetof(struct net_bridge_port_group, key), | |
48 | .key_len = sizeof(struct net_bridge_port_group_sg_key), | |
49 | .automatic_shrinking = true, | |
50 | }; | |
51 | ||
adc47037 | 52 | static void br_multicast_start_querier(struct net_bridge_mcast *brmctx, |
90010b36 | 53 | struct bridge_mcast_own_query *query); |
adc47037 NA |
54 | static void br_ip4_multicast_add_router(struct net_bridge_mcast *brmctx, |
55 | struct net_bridge_mcast_port *pmctx); | |
56 | static void br_ip4_multicast_leave_group(struct net_bridge_mcast *brmctx, | |
57 | struct net_bridge_mcast_port *pmctx, | |
bc8c20ac | 58 | __be32 group, |
6db6f0ea FF |
59 | __u16 vid, |
60 | const unsigned char *src); | |
42c11ccf | 61 | static void br_multicast_port_group_rexmit(struct timer_list *t); |
6db6f0ea | 62 | |
ed2d3597 | 63 | static void |
adc47037 NA |
64 | br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted); |
65 | static void br_ip6_multicast_add_router(struct net_bridge_mcast *brmctx, | |
66 | struct net_bridge_mcast_port *pmctx); | |
30515832 | 67 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
68 | static void br_ip6_multicast_leave_group(struct net_bridge_mcast *brmctx, |
69 | struct net_bridge_mcast_port *pmctx, | |
bc8c20ac | 70 | const struct in6_addr *group, |
6db6f0ea | 71 | __u16 vid, const unsigned char *src); |
bc8c20ac | 72 | #endif |
b0812368 | 73 | static struct net_bridge_port_group * |
adc47037 NA |
74 | __br_multicast_add_group(struct net_bridge_mcast *brmctx, |
75 | struct net_bridge_mcast_port *pmctx, | |
b0812368 NA |
76 | struct br_ip *group, |
77 | const unsigned char *src, | |
78 | u8 filter_mode, | |
9116ffbf NA |
79 | bool igmpv2_mldv1, |
80 | bool blocked); | |
8266a049 NA |
81 | static void br_multicast_find_del_pg(struct net_bridge *br, |
82 | struct net_bridge_port_group *pg); | |
613d61db | 83 | static void __br_multicast_stop(struct net_bridge_mcast *brmctx); |
c83b8fab | 84 | |
c832962a OM |
85 | static int br_mc_disabled_update(struct net_device *dev, bool value, |
86 | struct netlink_ext_ack *extack); | |
87 | ||
085b53c8 NA |
88 | static struct net_bridge_port_group * |
89 | br_sg_port_find(struct net_bridge *br, | |
90 | struct net_bridge_port_group_sg_key *sg_p) | |
91 | { | |
92 | lockdep_assert_held_once(&br->multicast_lock); | |
93 | ||
94 | return rhashtable_lookup_fast(&br->sg_port_tbl, sg_p, | |
95 | br_sg_port_rht_params); | |
96 | } | |
97 | ||
19e3a9c9 NA |
98 | static struct net_bridge_mdb_entry *br_mdb_ip_get_rcu(struct net_bridge *br, |
99 | struct br_ip *dst) | |
08b202b6 | 100 | { |
19e3a9c9 | 101 | return rhashtable_lookup(&br->mdb_hash_tbl, dst, br_mdb_rht_params); |
08b202b6 | 102 | } |
08b202b6 | 103 | |
19e3a9c9 NA |
104 | struct net_bridge_mdb_entry *br_mdb_ip_get(struct net_bridge *br, |
105 | struct br_ip *dst) | |
eb1d1641 | 106 | { |
19e3a9c9 | 107 | struct net_bridge_mdb_entry *ent; |
eb1d1641 | 108 | |
19e3a9c9 | 109 | lockdep_assert_held_once(&br->multicast_lock); |
eb1d1641 | 110 | |
19e3a9c9 NA |
111 | rcu_read_lock(); |
112 | ent = rhashtable_lookup(&br->mdb_hash_tbl, dst, br_mdb_rht_params); | |
113 | rcu_read_unlock(); | |
7f285fa7 | 114 | |
19e3a9c9 | 115 | return ent; |
7f285fa7 HX |
116 | } |
117 | ||
19e3a9c9 NA |
118 | static struct net_bridge_mdb_entry *br_mdb_ip4_get(struct net_bridge *br, |
119 | __be32 dst, __u16 vid) | |
eb1d1641 | 120 | { |
8ef2a9a5 YH |
121 | struct br_ip br_dst; |
122 | ||
19e3a9c9 | 123 | memset(&br_dst, 0, sizeof(br_dst)); |
eab3227b | 124 | br_dst.dst.ip4 = dst; |
8ef2a9a5 | 125 | br_dst.proto = htons(ETH_P_IP); |
b0e9a30d | 126 | br_dst.vid = vid; |
0821ec55 | 127 | |
19e3a9c9 | 128 | return br_mdb_ip_get(br, &br_dst); |
8ef2a9a5 YH |
129 | } |
130 | ||
dfd56b8b | 131 | #if IS_ENABLED(CONFIG_IPV6) |
19e3a9c9 NA |
132 | static struct net_bridge_mdb_entry *br_mdb_ip6_get(struct net_bridge *br, |
133 | const struct in6_addr *dst, | |
134 | __u16 vid) | |
08b202b6 YH |
135 | { |
136 | struct br_ip br_dst; | |
0821ec55 | 137 | |
19e3a9c9 | 138 | memset(&br_dst, 0, sizeof(br_dst)); |
eab3227b | 139 | br_dst.dst.ip6 = *dst; |
08b202b6 | 140 | br_dst.proto = htons(ETH_P_IPV6); |
b0e9a30d | 141 | br_dst.vid = vid; |
08b202b6 | 142 | |
19e3a9c9 | 143 | return br_mdb_ip_get(br, &br_dst); |
08b202b6 YH |
144 | } |
145 | #endif | |
146 | ||
adc47037 | 147 | struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, |
fbca58a2 | 148 | struct sk_buff *skb, u16 vid) |
eb1d1641 | 149 | { |
adc47037 | 150 | struct net_bridge *br = brmctx->br; |
8ef2a9a5 YH |
151 | struct br_ip ip; |
152 | ||
4cdd0d10 NA |
153 | if (!br_opt_get(br, BROPT_MULTICAST_ENABLED) || |
154 | br_multicast_ctx_vlan_global_disabled(brmctx)) | |
eb1d1641 HX |
155 | return NULL; |
156 | ||
8ef2a9a5 | 157 | if (BR_INPUT_SKB_CB(skb)->igmp) |
eb1d1641 HX |
158 | return NULL; |
159 | ||
19e3a9c9 | 160 | memset(&ip, 0, sizeof(ip)); |
8ef2a9a5 | 161 | ip.proto = skb->protocol; |
fbca58a2 | 162 | ip.vid = vid; |
8ef2a9a5 | 163 | |
eb1d1641 HX |
164 | switch (skb->protocol) { |
165 | case htons(ETH_P_IP): | |
eab3227b | 166 | ip.dst.ip4 = ip_hdr(skb)->daddr; |
adc47037 | 167 | if (brmctx->multicast_igmp_version == 3) { |
7d07a68c NA |
168 | struct net_bridge_mdb_entry *mdb; |
169 | ||
170 | ip.src.ip4 = ip_hdr(skb)->saddr; | |
171 | mdb = br_mdb_ip_get_rcu(br, &ip); | |
172 | if (mdb) | |
173 | return mdb; | |
174 | ip.src.ip4 = 0; | |
175 | } | |
8ef2a9a5 | 176 | break; |
dfd56b8b | 177 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 178 | case htons(ETH_P_IPV6): |
eab3227b | 179 | ip.dst.ip6 = ipv6_hdr(skb)->daddr; |
adc47037 | 180 | if (brmctx->multicast_mld_version == 2) { |
7d07a68c NA |
181 | struct net_bridge_mdb_entry *mdb; |
182 | ||
183 | ip.src.ip6 = ipv6_hdr(skb)->saddr; | |
184 | mdb = br_mdb_ip_get_rcu(br, &ip); | |
185 | if (mdb) | |
186 | return mdb; | |
187 | memset(&ip.src.ip6, 0, sizeof(ip.src.ip6)); | |
188 | } | |
08b202b6 YH |
189 | break; |
190 | #endif | |
8ef2a9a5 | 191 | default: |
955062b0 NA |
192 | ip.proto = 0; |
193 | ether_addr_copy(ip.dst.mac_addr, eth_hdr(skb)->h_dest); | |
eb1d1641 HX |
194 | } |
195 | ||
19e3a9c9 | 196 | return br_mdb_ip_get_rcu(br, &ip); |
eb1d1641 HX |
197 | } |
198 | ||
74edfd48 NA |
199 | /* IMPORTANT: this function must be used only when the contexts cannot be |
200 | * passed down (e.g. timer) and must be used for read-only purposes because | |
201 | * the vlan snooping option can change, so it can return any context | |
202 | * (non-vlan or vlan). Its initial intended purpose is to read timer values | |
203 | * from the *current* context based on the option. At worst that could lead | |
204 | * to inconsistent timers when the contexts are changed, i.e. src timer | |
205 | * which needs to re-arm with a specific delay taken from the old context | |
206 | */ | |
207 | static struct net_bridge_mcast_port * | |
208 | br_multicast_pg_to_port_ctx(const struct net_bridge_port_group *pg) | |
209 | { | |
210 | struct net_bridge_mcast_port *pmctx = &pg->key.port->multicast_ctx; | |
211 | struct net_bridge_vlan *vlan; | |
212 | ||
213 | lockdep_assert_held_once(&pg->key.port->br->multicast_lock); | |
214 | ||
215 | /* if vlan snooping is disabled use the port's multicast context */ | |
216 | if (!pg->key.addr.vid || | |
217 | !br_opt_get(pg->key.port->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) | |
218 | goto out; | |
219 | ||
220 | /* locking is tricky here, due to different rules for multicast and | |
221 | * vlans we need to take rcu to find the vlan and make sure it has | |
222 | * the BR_VLFLAG_MCAST_ENABLED flag set, it can only change under | |
223 | * multicast_lock which must be already held here, so the vlan's pmctx | |
224 | * can safely be used on return | |
225 | */ | |
226 | rcu_read_lock(); | |
3f0d14ef | 227 | vlan = br_vlan_find(nbp_vlan_group_rcu(pg->key.port), pg->key.addr.vid); |
74edfd48 NA |
228 | if (vlan && !br_multicast_port_ctx_vlan_disabled(&vlan->port_mcast_ctx)) |
229 | pmctx = &vlan->port_mcast_ctx; | |
230 | else | |
231 | pmctx = NULL; | |
232 | rcu_read_unlock(); | |
233 | out: | |
234 | return pmctx; | |
235 | } | |
236 | ||
4cdd0d10 NA |
237 | /* when snooping we need to check if the contexts should be used |
238 | * in the following order: | |
239 | * - if pmctx is non-NULL (port), check if it should be used | |
240 | * - if pmctx is NULL (bridge), check if brmctx should be used | |
241 | */ | |
242 | static bool | |
243 | br_multicast_ctx_should_use(const struct net_bridge_mcast *brmctx, | |
244 | const struct net_bridge_mcast_port *pmctx) | |
245 | { | |
246 | if (!netif_running(brmctx->br->dev)) | |
247 | return false; | |
248 | ||
249 | if (pmctx) | |
250 | return !br_multicast_port_ctx_state_disabled(pmctx); | |
251 | else | |
252 | return !br_multicast_ctx_vlan_disabled(brmctx); | |
253 | } | |
254 | ||
b0812368 NA |
255 | static bool br_port_group_equal(struct net_bridge_port_group *p, |
256 | struct net_bridge_port *port, | |
257 | const unsigned char *src) | |
258 | { | |
259 | if (p->key.port != port) | |
260 | return false; | |
261 | ||
262 | if (!(port->flags & BR_MULTICAST_TO_UNICAST)) | |
263 | return true; | |
264 | ||
265 | return ether_addr_equal(src, p->eth_addr); | |
266 | } | |
267 | ||
adc47037 NA |
268 | static void __fwd_add_star_excl(struct net_bridge_mcast_port *pmctx, |
269 | struct net_bridge_port_group *pg, | |
8266a049 NA |
270 | struct br_ip *sg_ip) |
271 | { | |
272 | struct net_bridge_port_group_sg_key sg_key; | |
8266a049 | 273 | struct net_bridge_port_group *src_pg; |
adc47037 | 274 | struct net_bridge_mcast *brmctx; |
8266a049 NA |
275 | |
276 | memset(&sg_key, 0, sizeof(sg_key)); | |
7b54aaaf | 277 | brmctx = br_multicast_port_ctx_get_global(pmctx); |
8266a049 NA |
278 | sg_key.port = pg->key.port; |
279 | sg_key.addr = *sg_ip; | |
adc47037 | 280 | if (br_sg_port_find(brmctx->br, &sg_key)) |
8266a049 NA |
281 | return; |
282 | ||
adc47037 NA |
283 | src_pg = __br_multicast_add_group(brmctx, pmctx, |
284 | sg_ip, pg->eth_addr, | |
9116ffbf | 285 | MCAST_INCLUDE, false, false); |
8266a049 NA |
286 | if (IS_ERR_OR_NULL(src_pg) || |
287 | src_pg->rt_protocol != RTPROT_KERNEL) | |
288 | return; | |
289 | ||
290 | src_pg->flags |= MDB_PG_FLAGS_STAR_EXCL; | |
291 | } | |
292 | ||
293 | static void __fwd_del_star_excl(struct net_bridge_port_group *pg, | |
294 | struct br_ip *sg_ip) | |
295 | { | |
296 | struct net_bridge_port_group_sg_key sg_key; | |
297 | struct net_bridge *br = pg->key.port->br; | |
298 | struct net_bridge_port_group *src_pg; | |
299 | ||
300 | memset(&sg_key, 0, sizeof(sg_key)); | |
301 | sg_key.port = pg->key.port; | |
302 | sg_key.addr = *sg_ip; | |
303 | src_pg = br_sg_port_find(br, &sg_key); | |
304 | if (!src_pg || !(src_pg->flags & MDB_PG_FLAGS_STAR_EXCL) || | |
305 | src_pg->rt_protocol != RTPROT_KERNEL) | |
306 | return; | |
307 | ||
308 | br_multicast_find_del_pg(br, src_pg); | |
309 | } | |
310 | ||
311 | /* When a port group transitions to (or is added as) EXCLUDE we need to add it | |
312 | * to all other ports' S,G entries which are not blocked by the current group | |
313 | * for proper replication, the assumption is that any S,G blocked entries | |
314 | * are already added so the S,G,port lookup should skip them. | |
315 | * When a port group transitions from EXCLUDE -> INCLUDE mode or is being | |
316 | * deleted we need to remove it from all ports' S,G entries where it was | |
317 | * automatically installed before (i.e. where it's MDB_PG_FLAGS_STAR_EXCL). | |
318 | */ | |
319 | void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, | |
320 | u8 filter_mode) | |
321 | { | |
322 | struct net_bridge *br = pg->key.port->br; | |
323 | struct net_bridge_port_group *pg_lst; | |
adc47037 | 324 | struct net_bridge_mcast_port *pmctx; |
8266a049 NA |
325 | struct net_bridge_mdb_entry *mp; |
326 | struct br_ip sg_ip; | |
327 | ||
328 | if (WARN_ON(!br_multicast_is_star_g(&pg->key.addr))) | |
329 | return; | |
330 | ||
331 | mp = br_mdb_ip_get(br, &pg->key.addr); | |
332 | if (!mp) | |
333 | return; | |
eb1593a0 NA |
334 | pmctx = br_multicast_pg_to_port_ctx(pg); |
335 | if (!pmctx) | |
336 | return; | |
8266a049 NA |
337 | |
338 | memset(&sg_ip, 0, sizeof(sg_ip)); | |
339 | sg_ip = pg->key.addr; | |
7b54aaaf | 340 | |
8266a049 NA |
341 | for (pg_lst = mlock_dereference(mp->ports, br); |
342 | pg_lst; | |
343 | pg_lst = mlock_dereference(pg_lst->next, br)) { | |
344 | struct net_bridge_group_src *src_ent; | |
345 | ||
346 | if (pg_lst == pg) | |
347 | continue; | |
348 | hlist_for_each_entry(src_ent, &pg_lst->src_list, node) { | |
349 | if (!(src_ent->flags & BR_SGRP_F_INSTALLED)) | |
350 | continue; | |
351 | sg_ip.src = src_ent->addr.src; | |
352 | switch (filter_mode) { | |
353 | case MCAST_INCLUDE: | |
354 | __fwd_del_star_excl(pg, &sg_ip); | |
355 | break; | |
356 | case MCAST_EXCLUDE: | |
adc47037 | 357 | __fwd_add_star_excl(pmctx, pg, &sg_ip); |
8266a049 NA |
358 | break; |
359 | } | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
094b82fd NA |
364 | /* called when adding a new S,G with host_joined == false by default */ |
365 | static void br_multicast_sg_host_state(struct net_bridge_mdb_entry *star_mp, | |
366 | struct net_bridge_port_group *sg) | |
367 | { | |
368 | struct net_bridge_mdb_entry *sg_mp; | |
369 | ||
370 | if (WARN_ON(!br_multicast_is_star_g(&star_mp->addr))) | |
371 | return; | |
372 | if (!star_mp->host_joined) | |
373 | return; | |
374 | ||
375 | sg_mp = br_mdb_ip_get(star_mp->br, &sg->key.addr); | |
376 | if (!sg_mp) | |
377 | return; | |
378 | sg_mp->host_joined = true; | |
379 | } | |
380 | ||
381 | /* set the host_joined state of all of *,G's S,G entries */ | |
382 | static void br_multicast_star_g_host_state(struct net_bridge_mdb_entry *star_mp) | |
383 | { | |
384 | struct net_bridge *br = star_mp->br; | |
385 | struct net_bridge_mdb_entry *sg_mp; | |
386 | struct net_bridge_port_group *pg; | |
387 | struct br_ip sg_ip; | |
388 | ||
389 | if (WARN_ON(!br_multicast_is_star_g(&star_mp->addr))) | |
390 | return; | |
391 | ||
392 | memset(&sg_ip, 0, sizeof(sg_ip)); | |
393 | sg_ip = star_mp->addr; | |
394 | for (pg = mlock_dereference(star_mp->ports, br); | |
395 | pg; | |
396 | pg = mlock_dereference(pg->next, br)) { | |
397 | struct net_bridge_group_src *src_ent; | |
398 | ||
399 | hlist_for_each_entry(src_ent, &pg->src_list, node) { | |
400 | if (!(src_ent->flags & BR_SGRP_F_INSTALLED)) | |
401 | continue; | |
402 | sg_ip.src = src_ent->addr.src; | |
403 | sg_mp = br_mdb_ip_get(br, &sg_ip); | |
404 | if (!sg_mp) | |
405 | continue; | |
406 | sg_mp->host_joined = star_mp->host_joined; | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
8266a049 NA |
411 | static void br_multicast_sg_del_exclude_ports(struct net_bridge_mdb_entry *sgmp) |
412 | { | |
413 | struct net_bridge_port_group __rcu **pp; | |
414 | struct net_bridge_port_group *p; | |
415 | ||
416 | /* *,G exclude ports are only added to S,G entries */ | |
417 | if (WARN_ON(br_multicast_is_star_g(&sgmp->addr))) | |
418 | return; | |
419 | ||
420 | /* we need the STAR_EXCLUDE ports if there are non-STAR_EXCLUDE ports | |
421 | * we should ignore perm entries since they're managed by user-space | |
422 | */ | |
423 | for (pp = &sgmp->ports; | |
424 | (p = mlock_dereference(*pp, sgmp->br)) != NULL; | |
425 | pp = &p->next) | |
426 | if (!(p->flags & (MDB_PG_FLAGS_STAR_EXCL | | |
427 | MDB_PG_FLAGS_PERMANENT))) | |
428 | return; | |
429 | ||
094b82fd NA |
430 | /* currently the host can only have joined the *,G which means |
431 | * we treat it as EXCLUDE {}, so for an S,G it's considered a | |
432 | * STAR_EXCLUDE entry and we can safely leave it | |
433 | */ | |
434 | sgmp->host_joined = false; | |
435 | ||
8266a049 NA |
436 | for (pp = &sgmp->ports; |
437 | (p = mlock_dereference(*pp, sgmp->br)) != NULL;) { | |
438 | if (!(p->flags & MDB_PG_FLAGS_PERMANENT)) | |
439 | br_multicast_del_pg(sgmp, p, pp); | |
440 | else | |
441 | pp = &p->next; | |
442 | } | |
443 | } | |
444 | ||
445 | void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, | |
446 | struct net_bridge_port_group *sg) | |
447 | { | |
448 | struct net_bridge_port_group_sg_key sg_key; | |
449 | struct net_bridge *br = star_mp->br; | |
adc47037 | 450 | struct net_bridge_mcast_port *pmctx; |
8266a049 | 451 | struct net_bridge_port_group *pg; |
adc47037 | 452 | struct net_bridge_mcast *brmctx; |
8266a049 NA |
453 | |
454 | if (WARN_ON(br_multicast_is_star_g(&sg->key.addr))) | |
455 | return; | |
456 | if (WARN_ON(!br_multicast_is_star_g(&star_mp->addr))) | |
457 | return; | |
458 | ||
094b82fd | 459 | br_multicast_sg_host_state(star_mp, sg); |
8266a049 NA |
460 | memset(&sg_key, 0, sizeof(sg_key)); |
461 | sg_key.addr = sg->key.addr; | |
462 | /* we need to add all exclude ports to the S,G */ | |
463 | for (pg = mlock_dereference(star_mp->ports, br); | |
464 | pg; | |
465 | pg = mlock_dereference(pg->next, br)) { | |
466 | struct net_bridge_port_group *src_pg; | |
467 | ||
468 | if (pg == sg || pg->filter_mode == MCAST_INCLUDE) | |
469 | continue; | |
470 | ||
471 | sg_key.port = pg->key.port; | |
472 | if (br_sg_port_find(br, &sg_key)) | |
473 | continue; | |
474 | ||
eb1593a0 NA |
475 | pmctx = br_multicast_pg_to_port_ctx(pg); |
476 | if (!pmctx) | |
477 | continue; | |
478 | brmctx = br_multicast_port_ctx_get_global(pmctx); | |
479 | ||
adc47037 | 480 | src_pg = __br_multicast_add_group(brmctx, pmctx, |
8266a049 NA |
481 | &sg->key.addr, |
482 | sg->eth_addr, | |
9116ffbf | 483 | MCAST_INCLUDE, false, false); |
8266a049 NA |
484 | if (IS_ERR_OR_NULL(src_pg) || |
485 | src_pg->rt_protocol != RTPROT_KERNEL) | |
486 | continue; | |
487 | src_pg->flags |= MDB_PG_FLAGS_STAR_EXCL; | |
488 | } | |
489 | } | |
490 | ||
b0812368 NA |
491 | static void br_multicast_fwd_src_add(struct net_bridge_group_src *src) |
492 | { | |
8266a049 | 493 | struct net_bridge_mdb_entry *star_mp; |
adc47037 | 494 | struct net_bridge_mcast_port *pmctx; |
b0812368 | 495 | struct net_bridge_port_group *sg; |
adc47037 | 496 | struct net_bridge_mcast *brmctx; |
b0812368 NA |
497 | struct br_ip sg_ip; |
498 | ||
499 | if (src->flags & BR_SGRP_F_INSTALLED) | |
500 | return; | |
501 | ||
502 | memset(&sg_ip, 0, sizeof(sg_ip)); | |
eb1593a0 NA |
503 | pmctx = br_multicast_pg_to_port_ctx(src->pg); |
504 | if (!pmctx) | |
505 | return; | |
7b54aaaf | 506 | brmctx = br_multicast_port_ctx_get_global(pmctx); |
b0812368 NA |
507 | sg_ip = src->pg->key.addr; |
508 | sg_ip.src = src->addr.src; | |
adc47037 NA |
509 | |
510 | sg = __br_multicast_add_group(brmctx, pmctx, &sg_ip, | |
9116ffbf NA |
511 | src->pg->eth_addr, MCAST_INCLUDE, false, |
512 | !timer_pending(&src->timer)); | |
b0812368 NA |
513 | if (IS_ERR_OR_NULL(sg)) |
514 | return; | |
515 | src->flags |= BR_SGRP_F_INSTALLED; | |
8266a049 | 516 | sg->flags &= ~MDB_PG_FLAGS_STAR_EXCL; |
b0812368 NA |
517 | |
518 | /* if it was added by user-space as perm we can skip next steps */ | |
519 | if (sg->rt_protocol != RTPROT_KERNEL && | |
520 | (sg->flags & MDB_PG_FLAGS_PERMANENT)) | |
521 | return; | |
522 | ||
523 | /* the kernel is now responsible for removing this S,G */ | |
524 | del_timer(&sg->timer); | |
8266a049 NA |
525 | star_mp = br_mdb_ip_get(src->br, &src->pg->key.addr); |
526 | if (!star_mp) | |
527 | return; | |
528 | ||
529 | br_multicast_sg_add_exclude_ports(star_mp, sg); | |
b0812368 NA |
530 | } |
531 | ||
d5a10222 NA |
532 | static void br_multicast_fwd_src_remove(struct net_bridge_group_src *src, |
533 | bool fastleave) | |
b0812368 NA |
534 | { |
535 | struct net_bridge_port_group *p, *pg = src->pg; | |
536 | struct net_bridge_port_group __rcu **pp; | |
537 | struct net_bridge_mdb_entry *mp; | |
538 | struct br_ip sg_ip; | |
539 | ||
540 | memset(&sg_ip, 0, sizeof(sg_ip)); | |
541 | sg_ip = pg->key.addr; | |
542 | sg_ip.src = src->addr.src; | |
543 | ||
544 | mp = br_mdb_ip_get(src->br, &sg_ip); | |
545 | if (!mp) | |
546 | return; | |
547 | ||
548 | for (pp = &mp->ports; | |
549 | (p = mlock_dereference(*pp, src->br)) != NULL; | |
550 | pp = &p->next) { | |
551 | if (!br_port_group_equal(p, pg->key.port, pg->eth_addr)) | |
552 | continue; | |
553 | ||
554 | if (p->rt_protocol != RTPROT_KERNEL && | |
555 | (p->flags & MDB_PG_FLAGS_PERMANENT)) | |
556 | break; | |
557 | ||
d5a10222 NA |
558 | if (fastleave) |
559 | p->flags |= MDB_PG_FLAGS_FAST_LEAVE; | |
b0812368 NA |
560 | br_multicast_del_pg(mp, p, pp); |
561 | break; | |
562 | } | |
563 | src->flags &= ~BR_SGRP_F_INSTALLED; | |
564 | } | |
565 | ||
9116ffbf | 566 | /* install S,G and based on src's timer enable or disable forwarding */ |
b0812368 NA |
567 | static void br_multicast_fwd_src_handle(struct net_bridge_group_src *src) |
568 | { | |
9116ffbf NA |
569 | struct net_bridge_port_group_sg_key sg_key; |
570 | struct net_bridge_port_group *sg; | |
571 | u8 old_flags; | |
572 | ||
b0812368 | 573 | br_multicast_fwd_src_add(src); |
9116ffbf NA |
574 | |
575 | memset(&sg_key, 0, sizeof(sg_key)); | |
576 | sg_key.addr = src->pg->key.addr; | |
577 | sg_key.addr.src = src->addr.src; | |
578 | sg_key.port = src->pg->key.port; | |
579 | ||
580 | sg = br_sg_port_find(src->br, &sg_key); | |
581 | if (!sg || (sg->flags & MDB_PG_FLAGS_PERMANENT)) | |
582 | return; | |
583 | ||
584 | old_flags = sg->flags; | |
585 | if (timer_pending(&src->timer)) | |
586 | sg->flags &= ~MDB_PG_FLAGS_BLOCKED; | |
587 | else | |
588 | sg->flags |= MDB_PG_FLAGS_BLOCKED; | |
589 | ||
590 | if (old_flags != sg->flags) { | |
591 | struct net_bridge_mdb_entry *sg_mp; | |
592 | ||
593 | sg_mp = br_mdb_ip_get(src->br, &sg_key.addr); | |
594 | if (!sg_mp) | |
595 | return; | |
596 | br_mdb_notify(src->br->dev, sg_mp, sg, RTM_NEWMDB); | |
597 | } | |
b0812368 NA |
598 | } |
599 | ||
e12cec65 NA |
600 | static void br_multicast_destroy_mdb_entry(struct net_bridge_mcast_gc *gc) |
601 | { | |
602 | struct net_bridge_mdb_entry *mp; | |
603 | ||
604 | mp = container_of(gc, struct net_bridge_mdb_entry, mcast_gc); | |
605 | WARN_ON(!hlist_unhashed(&mp->mdb_node)); | |
606 | WARN_ON(mp->ports); | |
607 | ||
608 | del_timer_sync(&mp->timer); | |
609 | kfree_rcu(mp, rcu); | |
610 | } | |
611 | ||
612 | static void br_multicast_del_mdb_entry(struct net_bridge_mdb_entry *mp) | |
613 | { | |
614 | struct net_bridge *br = mp->br; | |
615 | ||
616 | rhashtable_remove_fast(&br->mdb_hash_tbl, &mp->rhnode, | |
617 | br_mdb_rht_params); | |
618 | hlist_del_init_rcu(&mp->mdb_node); | |
619 | hlist_add_head(&mp->mcast_gc.gc_node, &br->mcast_gc_list); | |
620 | queue_work(system_long_wq, &br->mcast_gc_work); | |
621 | } | |
622 | ||
88c1f37f | 623 | static void br_multicast_group_expired(struct timer_list *t) |
eb1d1641 | 624 | { |
88c1f37f | 625 | struct net_bridge_mdb_entry *mp = from_timer(mp, t, timer); |
eb1d1641 | 626 | struct net_bridge *br = mp->br; |
eb1d1641 HX |
627 | |
628 | spin_lock(&br->multicast_lock); | |
b0812368 NA |
629 | if (hlist_unhashed(&mp->mdb_node) || !netif_running(br->dev) || |
630 | timer_pending(&mp->timer)) | |
eb1d1641 HX |
631 | goto out; |
632 | ||
1bc844ee | 633 | br_multicast_host_leave(mp, true); |
eb1d1641 HX |
634 | |
635 | if (mp->ports) | |
636 | goto out; | |
e12cec65 NA |
637 | br_multicast_del_mdb_entry(mp); |
638 | out: | |
639 | spin_unlock(&br->multicast_lock); | |
640 | } | |
eb1d1641 | 641 | |
e12cec65 NA |
642 | static void br_multicast_destroy_group_src(struct net_bridge_mcast_gc *gc) |
643 | { | |
644 | struct net_bridge_group_src *src; | |
eb1d1641 | 645 | |
e12cec65 NA |
646 | src = container_of(gc, struct net_bridge_group_src, mcast_gc); |
647 | WARN_ON(!hlist_unhashed(&src->node)); | |
eb1d1641 | 648 | |
e12cec65 NA |
649 | del_timer_sync(&src->timer); |
650 | kfree_rcu(src, rcu); | |
eb1d1641 HX |
651 | } |
652 | ||
d5a10222 NA |
653 | void br_multicast_del_group_src(struct net_bridge_group_src *src, |
654 | bool fastleave) | |
8b671779 | 655 | { |
085b53c8 | 656 | struct net_bridge *br = src->pg->key.port->br; |
8b671779 | 657 | |
d5a10222 | 658 | br_multicast_fwd_src_remove(src, fastleave); |
8b671779 NA |
659 | hlist_del_init_rcu(&src->node); |
660 | src->pg->src_ents--; | |
e12cec65 NA |
661 | hlist_add_head(&src->mcast_gc.gc_node, &br->mcast_gc_list); |
662 | queue_work(system_long_wq, &br->mcast_gc_work); | |
663 | } | |
664 | ||
665 | static void br_multicast_destroy_port_group(struct net_bridge_mcast_gc *gc) | |
666 | { | |
667 | struct net_bridge_port_group *pg; | |
668 | ||
669 | pg = container_of(gc, struct net_bridge_port_group, mcast_gc); | |
670 | WARN_ON(!hlist_unhashed(&pg->mglist)); | |
671 | WARN_ON(!hlist_empty(&pg->src_list)); | |
672 | ||
673 | del_timer_sync(&pg->rexmit_timer); | |
674 | del_timer_sync(&pg->timer); | |
675 | kfree_rcu(pg, rcu); | |
8b671779 NA |
676 | } |
677 | ||
681590bd NA |
678 | void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, |
679 | struct net_bridge_port_group *pg, | |
680 | struct net_bridge_port_group __rcu **pp) | |
681 | { | |
085b53c8 | 682 | struct net_bridge *br = pg->key.port->br; |
8b671779 NA |
683 | struct net_bridge_group_src *ent; |
684 | struct hlist_node *tmp; | |
681590bd NA |
685 | |
686 | rcu_assign_pointer(*pp, pg->next); | |
687 | hlist_del_init(&pg->mglist); | |
baa74d39 | 688 | br_multicast_eht_clean_sets(pg); |
8b671779 | 689 | hlist_for_each_entry_safe(ent, tmp, &pg->src_list, node) |
d5a10222 | 690 | br_multicast_del_group_src(ent, false); |
81f19838 | 691 | br_mdb_notify(br->dev, mp, pg, RTM_DELMDB); |
74705582 NA |
692 | if (!br_multicast_is_star_g(&mp->addr)) { |
693 | rhashtable_remove_fast(&br->sg_port_tbl, &pg->rhnode, | |
694 | br_sg_port_rht_params); | |
8266a049 | 695 | br_multicast_sg_del_exclude_ports(mp); |
74705582 | 696 | } else { |
8266a049 | 697 | br_multicast_star_g_handle_mode(pg, MCAST_INCLUDE); |
74705582 | 698 | } |
e12cec65 NA |
699 | hlist_add_head(&pg->mcast_gc.gc_node, &br->mcast_gc_list); |
700 | queue_work(system_long_wq, &br->mcast_gc_work); | |
681590bd NA |
701 | |
702 | if (!mp->ports && !mp->host_joined && netif_running(br->dev)) | |
703 | mod_timer(&mp->timer, jiffies); | |
704 | } | |
705 | ||
706 | static void br_multicast_find_del_pg(struct net_bridge *br, | |
707 | struct net_bridge_port_group *pg) | |
eb1d1641 | 708 | { |
8b671779 | 709 | struct net_bridge_port_group __rcu **pp; |
eb1d1641 HX |
710 | struct net_bridge_mdb_entry *mp; |
711 | struct net_bridge_port_group *p; | |
e8051688 | 712 | |
085b53c8 | 713 | mp = br_mdb_ip_get(br, &pg->key.addr); |
eb1d1641 HX |
714 | if (WARN_ON(!mp)) |
715 | return; | |
716 | ||
e8051688 ED |
717 | for (pp = &mp->ports; |
718 | (p = mlock_dereference(*pp, br)) != NULL; | |
719 | pp = &p->next) { | |
eb1d1641 HX |
720 | if (p != pg) |
721 | continue; | |
722 | ||
681590bd | 723 | br_multicast_del_pg(mp, pg, pp); |
eb1d1641 HX |
724 | return; |
725 | } | |
726 | ||
727 | WARN_ON(1); | |
728 | } | |
729 | ||
88c1f37f | 730 | static void br_multicast_port_group_expired(struct timer_list *t) |
eb1d1641 | 731 | { |
88c1f37f | 732 | struct net_bridge_port_group *pg = from_timer(pg, t, timer); |
d6c33d67 | 733 | struct net_bridge_group_src *src_ent; |
085b53c8 | 734 | struct net_bridge *br = pg->key.port->br; |
d6c33d67 NA |
735 | struct hlist_node *tmp; |
736 | bool changed; | |
eb1d1641 HX |
737 | |
738 | spin_lock(&br->multicast_lock); | |
739 | if (!netif_running(br->dev) || timer_pending(&pg->timer) || | |
9d06b6d8 | 740 | hlist_unhashed(&pg->mglist) || pg->flags & MDB_PG_FLAGS_PERMANENT) |
eb1d1641 HX |
741 | goto out; |
742 | ||
d6c33d67 NA |
743 | changed = !!(pg->filter_mode == MCAST_EXCLUDE); |
744 | pg->filter_mode = MCAST_INCLUDE; | |
745 | hlist_for_each_entry_safe(src_ent, tmp, &pg->src_list, node) { | |
746 | if (!timer_pending(&src_ent->timer)) { | |
d5a10222 | 747 | br_multicast_del_group_src(src_ent, false); |
d6c33d67 NA |
748 | changed = true; |
749 | } | |
750 | } | |
751 | ||
752 | if (hlist_empty(&pg->src_list)) { | |
753 | br_multicast_find_del_pg(br, pg); | |
754 | } else if (changed) { | |
085b53c8 | 755 | struct net_bridge_mdb_entry *mp = br_mdb_ip_get(br, &pg->key.addr); |
eb1d1641 | 756 | |
8266a049 NA |
757 | if (changed && br_multicast_is_star_g(&pg->key.addr)) |
758 | br_multicast_star_g_handle_mode(pg, MCAST_INCLUDE); | |
759 | ||
d6c33d67 NA |
760 | if (WARN_ON(!mp)) |
761 | goto out; | |
762 | br_mdb_notify(br->dev, mp, pg, RTM_NEWMDB); | |
763 | } | |
eb1d1641 HX |
764 | out: |
765 | spin_unlock(&br->multicast_lock); | |
766 | } | |
767 | ||
e12cec65 NA |
768 | static void br_multicast_gc(struct hlist_head *head) |
769 | { | |
770 | struct net_bridge_mcast_gc *gcent; | |
771 | struct hlist_node *tmp; | |
772 | ||
773 | hlist_for_each_entry_safe(gcent, tmp, head, gc_node) { | |
774 | hlist_del_init(&gcent->gc_node); | |
775 | gcent->destroy(gcent); | |
776 | } | |
777 | } | |
778 | ||
615cc23e NA |
779 | static void __br_multicast_query_handle_vlan(struct net_bridge_mcast *brmctx, |
780 | struct net_bridge_mcast_port *pmctx, | |
781 | struct sk_buff *skb) | |
782 | { | |
783 | struct net_bridge_vlan *vlan = NULL; | |
784 | ||
785 | if (pmctx && br_multicast_port_ctx_is_vlan(pmctx)) | |
786 | vlan = pmctx->vlan; | |
787 | else if (br_multicast_ctx_is_vlan(brmctx)) | |
788 | vlan = brmctx->vlan; | |
789 | ||
790 | if (vlan && !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED)) { | |
791 | u16 vlan_proto; | |
792 | ||
793 | if (br_vlan_get_proto(brmctx->br->dev, &vlan_proto) != 0) | |
794 | return; | |
795 | __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vlan->vid); | |
796 | } | |
797 | } | |
798 | ||
adc47037 | 799 | static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge_mcast *brmctx, |
615cc23e | 800 | struct net_bridge_mcast_port *pmctx, |
438ef2d0 NA |
801 | struct net_bridge_port_group *pg, |
802 | __be32 ip_dst, __be32 group, | |
803 | bool with_srcs, bool over_lmqt, | |
42c11ccf NA |
804 | u8 sflag, u8 *igmp_type, |
805 | bool *need_rexmit) | |
eb1d1641 | 806 | { |
085b53c8 | 807 | struct net_bridge_port *p = pg ? pg->key.port : NULL; |
438ef2d0 NA |
808 | struct net_bridge_group_src *ent; |
809 | size_t pkt_size, igmp_hdr_size; | |
810 | unsigned long now = jiffies; | |
5e923585 | 811 | struct igmpv3_query *ihv3; |
438ef2d0 NA |
812 | void *csum_start = NULL; |
813 | __sum16 *csum = NULL; | |
eb1d1641 HX |
814 | struct sk_buff *skb; |
815 | struct igmphdr *ih; | |
816 | struct ethhdr *eth; | |
438ef2d0 | 817 | unsigned long lmqt; |
eb1d1641 | 818 | struct iphdr *iph; |
438ef2d0 | 819 | u16 lmqt_srcs = 0; |
eb1d1641 | 820 | |
5e923585 | 821 | igmp_hdr_size = sizeof(*ih); |
d3d065c0 | 822 | if (brmctx->multicast_igmp_version == 3) { |
5e923585 | 823 | igmp_hdr_size = sizeof(*ihv3); |
438ef2d0 | 824 | if (pg && with_srcs) { |
d3d065c0 NA |
825 | lmqt = now + (brmctx->multicast_last_member_interval * |
826 | brmctx->multicast_last_member_count); | |
438ef2d0 NA |
827 | hlist_for_each_entry(ent, &pg->src_list, node) { |
828 | if (over_lmqt == time_after(ent->timer.expires, | |
829 | lmqt) && | |
830 | ent->src_query_rexmit_cnt > 0) | |
831 | lmqt_srcs++; | |
832 | } | |
833 | ||
834 | if (!lmqt_srcs) | |
835 | return NULL; | |
836 | igmp_hdr_size += lmqt_srcs * sizeof(__be32); | |
837 | } | |
838 | } | |
839 | ||
840 | pkt_size = sizeof(*eth) + sizeof(*iph) + 4 + igmp_hdr_size; | |
841 | if ((p && pkt_size > p->dev->mtu) || | |
adc47037 | 842 | pkt_size > brmctx->br->dev->mtu) |
438ef2d0 NA |
843 | return NULL; |
844 | ||
adc47037 | 845 | skb = netdev_alloc_skb_ip_align(brmctx->br->dev, pkt_size); |
eb1d1641 HX |
846 | if (!skb) |
847 | goto out; | |
848 | ||
615cc23e | 849 | __br_multicast_query_handle_vlan(brmctx, pmctx, skb); |
eb1d1641 HX |
850 | skb->protocol = htons(ETH_P_IP); |
851 | ||
852 | skb_reset_mac_header(skb); | |
853 | eth = eth_hdr(skb); | |
854 | ||
adc47037 | 855 | ether_addr_copy(eth->h_source, brmctx->br->dev->dev_addr); |
438ef2d0 | 856 | ip_eth_mc_map(ip_dst, eth->h_dest); |
eb1d1641 HX |
857 | eth->h_proto = htons(ETH_P_IP); |
858 | skb_put(skb, sizeof(*eth)); | |
859 | ||
860 | skb_set_network_header(skb, skb->len); | |
861 | iph = ip_hdr(skb); | |
438ef2d0 | 862 | iph->tot_len = htons(pkt_size - sizeof(*eth)); |
eb1d1641 HX |
863 | |
864 | iph->version = 4; | |
865 | iph->ihl = 6; | |
866 | iph->tos = 0xc0; | |
eb1d1641 HX |
867 | iph->id = 0; |
868 | iph->frag_off = htons(IP_DF); | |
869 | iph->ttl = 1; | |
870 | iph->protocol = IPPROTO_IGMP; | |
adc47037 NA |
871 | iph->saddr = br_opt_get(brmctx->br, BROPT_MULTICAST_QUERY_USE_IFADDR) ? |
872 | inet_select_addr(brmctx->br->dev, 0, RT_SCOPE_LINK) : 0; | |
438ef2d0 | 873 | iph->daddr = ip_dst; |
eb1d1641 HX |
874 | ((u8 *)&iph[1])[0] = IPOPT_RA; |
875 | ((u8 *)&iph[1])[1] = 4; | |
876 | ((u8 *)&iph[1])[2] = 0; | |
877 | ((u8 *)&iph[1])[3] = 0; | |
878 | ip_send_check(iph); | |
879 | skb_put(skb, 24); | |
880 | ||
881 | skb_set_transport_header(skb, skb->len); | |
1080ab95 | 882 | *igmp_type = IGMP_HOST_MEMBERSHIP_QUERY; |
eb1d1641 | 883 | |
d3d065c0 | 884 | switch (brmctx->multicast_igmp_version) { |
5e923585 NA |
885 | case 2: |
886 | ih = igmp_hdr(skb); | |
887 | ih->type = IGMP_HOST_MEMBERSHIP_QUERY; | |
d3d065c0 NA |
888 | ih->code = (group ? brmctx->multicast_last_member_interval : |
889 | brmctx->multicast_query_response_interval) / | |
5e923585 NA |
890 | (HZ / IGMP_TIMER_SCALE); |
891 | ih->group = group; | |
892 | ih->csum = 0; | |
438ef2d0 NA |
893 | csum = &ih->csum; |
894 | csum_start = (void *)ih; | |
5e923585 NA |
895 | break; |
896 | case 3: | |
897 | ihv3 = igmpv3_query_hdr(skb); | |
898 | ihv3->type = IGMP_HOST_MEMBERSHIP_QUERY; | |
d3d065c0 NA |
899 | ihv3->code = (group ? brmctx->multicast_last_member_interval : |
900 | brmctx->multicast_query_response_interval) / | |
5e923585 NA |
901 | (HZ / IGMP_TIMER_SCALE); |
902 | ihv3->group = group; | |
d3d065c0 | 903 | ihv3->qqic = brmctx->multicast_query_interval / HZ; |
438ef2d0 | 904 | ihv3->nsrcs = htons(lmqt_srcs); |
5e923585 | 905 | ihv3->resv = 0; |
438ef2d0 | 906 | ihv3->suppress = sflag; |
5e923585 NA |
907 | ihv3->qrv = 2; |
908 | ihv3->csum = 0; | |
438ef2d0 NA |
909 | csum = &ihv3->csum; |
910 | csum_start = (void *)ihv3; | |
911 | if (!pg || !with_srcs) | |
912 | break; | |
913 | ||
914 | lmqt_srcs = 0; | |
915 | hlist_for_each_entry(ent, &pg->src_list, node) { | |
916 | if (over_lmqt == time_after(ent->timer.expires, | |
917 | lmqt) && | |
918 | ent->src_query_rexmit_cnt > 0) { | |
deb96566 | 919 | ihv3->srcs[lmqt_srcs++] = ent->addr.src.ip4; |
438ef2d0 | 920 | ent->src_query_rexmit_cnt--; |
42c11ccf NA |
921 | if (need_rexmit && ent->src_query_rexmit_cnt) |
922 | *need_rexmit = true; | |
438ef2d0 NA |
923 | } |
924 | } | |
925 | if (WARN_ON(lmqt_srcs != ntohs(ihv3->nsrcs))) { | |
926 | kfree_skb(skb); | |
927 | return NULL; | |
928 | } | |
5e923585 NA |
929 | break; |
930 | } | |
931 | ||
438ef2d0 NA |
932 | if (WARN_ON(!csum || !csum_start)) { |
933 | kfree_skb(skb); | |
934 | return NULL; | |
935 | } | |
936 | ||
937 | *csum = ip_compute_csum(csum_start, igmp_hdr_size); | |
5e923585 | 938 | skb_put(skb, igmp_hdr_size); |
eb1d1641 HX |
939 | __skb_pull(skb, sizeof(*eth)); |
940 | ||
941 | out: | |
942 | return skb; | |
943 | } | |
944 | ||
dfd56b8b | 945 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 | 946 | static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge_mcast *brmctx, |
615cc23e | 947 | struct net_bridge_mcast_port *pmctx, |
438ef2d0 NA |
948 | struct net_bridge_port_group *pg, |
949 | const struct in6_addr *ip6_dst, | |
950 | const struct in6_addr *group, | |
951 | bool with_srcs, bool over_llqt, | |
42c11ccf NA |
952 | u8 sflag, u8 *igmp_type, |
953 | bool *need_rexmit) | |
08b202b6 | 954 | { |
085b53c8 | 955 | struct net_bridge_port *p = pg ? pg->key.port : NULL; |
438ef2d0 NA |
956 | struct net_bridge_group_src *ent; |
957 | size_t pkt_size, mld_hdr_size; | |
958 | unsigned long now = jiffies; | |
aa2ae3e7 | 959 | struct mld2_query *mld2q; |
438ef2d0 | 960 | void *csum_start = NULL; |
aa2ae3e7 | 961 | unsigned long interval; |
438ef2d0 | 962 | __sum16 *csum = NULL; |
08b202b6 YH |
963 | struct ipv6hdr *ip6h; |
964 | struct mld_msg *mldq; | |
aa2ae3e7 | 965 | struct sk_buff *skb; |
438ef2d0 | 966 | unsigned long llqt; |
08b202b6 | 967 | struct ethhdr *eth; |
438ef2d0 | 968 | u16 llqt_srcs = 0; |
08b202b6 | 969 | u8 *hopopt; |
08b202b6 | 970 | |
aa2ae3e7 | 971 | mld_hdr_size = sizeof(*mldq); |
d3d065c0 | 972 | if (brmctx->multicast_mld_version == 2) { |
aa2ae3e7 | 973 | mld_hdr_size = sizeof(*mld2q); |
438ef2d0 | 974 | if (pg && with_srcs) { |
d3d065c0 NA |
975 | llqt = now + (brmctx->multicast_last_member_interval * |
976 | brmctx->multicast_last_member_count); | |
438ef2d0 NA |
977 | hlist_for_each_entry(ent, &pg->src_list, node) { |
978 | if (over_llqt == time_after(ent->timer.expires, | |
979 | llqt) && | |
980 | ent->src_query_rexmit_cnt > 0) | |
981 | llqt_srcs++; | |
982 | } | |
983 | ||
984 | if (!llqt_srcs) | |
985 | return NULL; | |
986 | mld_hdr_size += llqt_srcs * sizeof(struct in6_addr); | |
987 | } | |
988 | } | |
989 | ||
990 | pkt_size = sizeof(*eth) + sizeof(*ip6h) + 8 + mld_hdr_size; | |
991 | if ((p && pkt_size > p->dev->mtu) || | |
adc47037 | 992 | pkt_size > brmctx->br->dev->mtu) |
438ef2d0 NA |
993 | return NULL; |
994 | ||
adc47037 | 995 | skb = netdev_alloc_skb_ip_align(brmctx->br->dev, pkt_size); |
08b202b6 YH |
996 | if (!skb) |
997 | goto out; | |
998 | ||
615cc23e | 999 | __br_multicast_query_handle_vlan(brmctx, pmctx, skb); |
08b202b6 YH |
1000 | skb->protocol = htons(ETH_P_IPV6); |
1001 | ||
1002 | /* Ethernet header */ | |
1003 | skb_reset_mac_header(skb); | |
1004 | eth = eth_hdr(skb); | |
1005 | ||
adc47037 | 1006 | ether_addr_copy(eth->h_source, brmctx->br->dev->dev_addr); |
08b202b6 YH |
1007 | eth->h_proto = htons(ETH_P_IPV6); |
1008 | skb_put(skb, sizeof(*eth)); | |
1009 | ||
1010 | /* IPv6 header + HbH option */ | |
1011 | skb_set_network_header(skb, skb->len); | |
1012 | ip6h = ipv6_hdr(skb); | |
1013 | ||
1014 | *(__force __be32 *)ip6h = htonl(0x60000000); | |
aa2ae3e7 | 1015 | ip6h->payload_len = htons(8 + mld_hdr_size); |
08b202b6 YH |
1016 | ip6h->nexthdr = IPPROTO_HOPOPTS; |
1017 | ip6h->hop_limit = 1; | |
438ef2d0 | 1018 | ip6h->daddr = *ip6_dst; |
adc47037 NA |
1019 | if (ipv6_dev_get_saddr(dev_net(brmctx->br->dev), brmctx->br->dev, |
1020 | &ip6h->daddr, 0, &ip6h->saddr)) { | |
d1d81d4c | 1021 | kfree_skb(skb); |
adc47037 | 1022 | br_opt_toggle(brmctx->br, BROPT_HAS_IPV6_ADDR, false); |
d1d81d4c UW |
1023 | return NULL; |
1024 | } | |
0888d5f3 | 1025 | |
adc47037 | 1026 | br_opt_toggle(brmctx->br, BROPT_HAS_IPV6_ADDR, true); |
36cff5a1 | 1027 | ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest); |
08b202b6 YH |
1028 | |
1029 | hopopt = (u8 *)(ip6h + 1); | |
1030 | hopopt[0] = IPPROTO_ICMPV6; /* next hdr */ | |
1031 | hopopt[1] = 0; /* length of HbH */ | |
1032 | hopopt[2] = IPV6_TLV_ROUTERALERT; /* Router Alert */ | |
1033 | hopopt[3] = 2; /* Length of RA Option */ | |
1034 | hopopt[4] = 0; /* Type = 0x0000 (MLD) */ | |
1035 | hopopt[5] = 0; | |
1de5a71c EZ |
1036 | hopopt[6] = IPV6_TLV_PAD1; /* Pad1 */ |
1037 | hopopt[7] = IPV6_TLV_PAD1; /* Pad1 */ | |
08b202b6 YH |
1038 | |
1039 | skb_put(skb, sizeof(*ip6h) + 8); | |
1040 | ||
1041 | /* ICMPv6 */ | |
1042 | skb_set_transport_header(skb, skb->len); | |
438ef2d0 | 1043 | interval = ipv6_addr_any(group) ? |
d3d065c0 NA |
1044 | brmctx->multicast_query_response_interval : |
1045 | brmctx->multicast_last_member_interval; | |
1080ab95 | 1046 | *igmp_type = ICMPV6_MGM_QUERY; |
d3d065c0 | 1047 | switch (brmctx->multicast_mld_version) { |
aa2ae3e7 NA |
1048 | case 1: |
1049 | mldq = (struct mld_msg *)icmp6_hdr(skb); | |
1050 | mldq->mld_type = ICMPV6_MGM_QUERY; | |
1051 | mldq->mld_code = 0; | |
1052 | mldq->mld_cksum = 0; | |
1053 | mldq->mld_maxdelay = htons((u16)jiffies_to_msecs(interval)); | |
1054 | mldq->mld_reserved = 0; | |
438ef2d0 NA |
1055 | mldq->mld_mca = *group; |
1056 | csum = &mldq->mld_cksum; | |
1057 | csum_start = (void *)mldq; | |
aa2ae3e7 NA |
1058 | break; |
1059 | case 2: | |
1060 | mld2q = (struct mld2_query *)icmp6_hdr(skb); | |
53631a5f | 1061 | mld2q->mld2q_mrc = htons((u16)jiffies_to_msecs(interval)); |
aa2ae3e7 NA |
1062 | mld2q->mld2q_type = ICMPV6_MGM_QUERY; |
1063 | mld2q->mld2q_code = 0; | |
1064 | mld2q->mld2q_cksum = 0; | |
1065 | mld2q->mld2q_resv1 = 0; | |
1066 | mld2q->mld2q_resv2 = 0; | |
438ef2d0 | 1067 | mld2q->mld2q_suppress = sflag; |
aa2ae3e7 | 1068 | mld2q->mld2q_qrv = 2; |
438ef2d0 | 1069 | mld2q->mld2q_nsrcs = htons(llqt_srcs); |
d3d065c0 | 1070 | mld2q->mld2q_qqic = brmctx->multicast_query_interval / HZ; |
438ef2d0 NA |
1071 | mld2q->mld2q_mca = *group; |
1072 | csum = &mld2q->mld2q_cksum; | |
1073 | csum_start = (void *)mld2q; | |
1074 | if (!pg || !with_srcs) | |
1075 | break; | |
1076 | ||
1077 | llqt_srcs = 0; | |
1078 | hlist_for_each_entry(ent, &pg->src_list, node) { | |
1079 | if (over_llqt == time_after(ent->timer.expires, | |
1080 | llqt) && | |
1081 | ent->src_query_rexmit_cnt > 0) { | |
deb96566 | 1082 | mld2q->mld2q_srcs[llqt_srcs++] = ent->addr.src.ip6; |
438ef2d0 | 1083 | ent->src_query_rexmit_cnt--; |
42c11ccf NA |
1084 | if (need_rexmit && ent->src_query_rexmit_cnt) |
1085 | *need_rexmit = true; | |
438ef2d0 NA |
1086 | } |
1087 | } | |
1088 | if (WARN_ON(llqt_srcs != ntohs(mld2q->mld2q_nsrcs))) { | |
1089 | kfree_skb(skb); | |
1090 | return NULL; | |
1091 | } | |
aa2ae3e7 NA |
1092 | break; |
1093 | } | |
08b202b6 | 1094 | |
438ef2d0 NA |
1095 | if (WARN_ON(!csum || !csum_start)) { |
1096 | kfree_skb(skb); | |
1097 | return NULL; | |
1098 | } | |
1099 | ||
1100 | *csum = csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, mld_hdr_size, | |
1101 | IPPROTO_ICMPV6, | |
1102 | csum_partial(csum_start, mld_hdr_size, 0)); | |
1103 | skb_put(skb, mld_hdr_size); | |
08b202b6 YH |
1104 | __skb_pull(skb, sizeof(*eth)); |
1105 | ||
1106 | out: | |
1107 | return skb; | |
1108 | } | |
1109 | #endif | |
1110 | ||
adc47037 | 1111 | static struct sk_buff *br_multicast_alloc_query(struct net_bridge_mcast *brmctx, |
615cc23e | 1112 | struct net_bridge_mcast_port *pmctx, |
438ef2d0 NA |
1113 | struct net_bridge_port_group *pg, |
1114 | struct br_ip *ip_dst, | |
1115 | struct br_ip *group, | |
1116 | bool with_srcs, bool over_lmqt, | |
42c11ccf NA |
1117 | u8 sflag, u8 *igmp_type, |
1118 | bool *need_rexmit) | |
8ef2a9a5 | 1119 | { |
438ef2d0 NA |
1120 | __be32 ip4_dst; |
1121 | ||
1122 | switch (group->proto) { | |
8ef2a9a5 | 1123 | case htons(ETH_P_IP): |
eab3227b | 1124 | ip4_dst = ip_dst ? ip_dst->dst.ip4 : htonl(INADDR_ALLHOSTS_GROUP); |
615cc23e | 1125 | return br_ip4_multicast_alloc_query(brmctx, pmctx, pg, |
eab3227b | 1126 | ip4_dst, group->dst.ip4, |
438ef2d0 | 1127 | with_srcs, over_lmqt, |
42c11ccf NA |
1128 | sflag, igmp_type, |
1129 | need_rexmit); | |
dfd56b8b | 1130 | #if IS_ENABLED(CONFIG_IPV6) |
438ef2d0 NA |
1131 | case htons(ETH_P_IPV6): { |
1132 | struct in6_addr ip6_dst; | |
1133 | ||
1134 | if (ip_dst) | |
eab3227b | 1135 | ip6_dst = ip_dst->dst.ip6; |
438ef2d0 NA |
1136 | else |
1137 | ipv6_addr_set(&ip6_dst, htonl(0xff020000), 0, 0, | |
1138 | htonl(1)); | |
1139 | ||
615cc23e | 1140 | return br_ip6_multicast_alloc_query(brmctx, pmctx, pg, |
eab3227b | 1141 | &ip6_dst, &group->dst.ip6, |
438ef2d0 | 1142 | with_srcs, over_lmqt, |
42c11ccf NA |
1143 | sflag, igmp_type, |
1144 | need_rexmit); | |
438ef2d0 | 1145 | } |
08b202b6 | 1146 | #endif |
8ef2a9a5 YH |
1147 | } |
1148 | return NULL; | |
1149 | } | |
1150 | ||
cfd56754 | 1151 | struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, |
5e923585 | 1152 | struct br_ip *group) |
eb1d1641 | 1153 | { |
eb1d1641 | 1154 | struct net_bridge_mdb_entry *mp; |
4c0833bc | 1155 | int err; |
eb1d1641 | 1156 | |
19e3a9c9 NA |
1157 | mp = br_mdb_ip_get(br, group); |
1158 | if (mp) | |
1159 | return mp; | |
eb1d1641 | 1160 | |
19e3a9c9 | 1161 | if (atomic_read(&br->mdb_hash_tbl.nelems) >= br->hash_max) { |
c832962a | 1162 | br_mc_disabled_update(br->dev, false, NULL); |
19e3a9c9 NA |
1163 | br_opt_toggle(br, BROPT_MULTICAST_ENABLED, false); |
1164 | return ERR_PTR(-E2BIG); | |
eb1d1641 HX |
1165 | } |
1166 | ||
1167 | mp = kzalloc(sizeof(*mp), GFP_ATOMIC); | |
1168 | if (unlikely(!mp)) | |
4c0833bc | 1169 | return ERR_PTR(-ENOMEM); |
eb1d1641 HX |
1170 | |
1171 | mp->br = br; | |
8ef2a9a5 | 1172 | mp->addr = *group; |
e12cec65 | 1173 | mp->mcast_gc.destroy = br_multicast_destroy_mdb_entry; |
88c1f37f | 1174 | timer_setup(&mp->timer, br_multicast_group_expired, 0); |
19e3a9c9 NA |
1175 | err = rhashtable_lookup_insert_fast(&br->mdb_hash_tbl, &mp->rhnode, |
1176 | br_mdb_rht_params); | |
1177 | if (err) { | |
1178 | kfree(mp); | |
1179 | mp = ERR_PTR(err); | |
1180 | } else { | |
1181 | hlist_add_head_rcu(&mp->mdb_node, &br->mdb_list); | |
1182 | } | |
1faabf2a | 1183 | |
eb1d1641 HX |
1184 | return mp; |
1185 | } | |
1186 | ||
8b671779 NA |
1187 | static void br_multicast_group_src_expired(struct timer_list *t) |
1188 | { | |
1189 | struct net_bridge_group_src *src = from_timer(src, t, timer); | |
1190 | struct net_bridge_port_group *pg; | |
1191 | struct net_bridge *br = src->br; | |
1192 | ||
1193 | spin_lock(&br->multicast_lock); | |
1194 | if (hlist_unhashed(&src->node) || !netif_running(br->dev) || | |
1195 | timer_pending(&src->timer)) | |
1196 | goto out; | |
1197 | ||
1198 | pg = src->pg; | |
1199 | if (pg->filter_mode == MCAST_INCLUDE) { | |
d5a10222 | 1200 | br_multicast_del_group_src(src, false); |
8b671779 NA |
1201 | if (!hlist_empty(&pg->src_list)) |
1202 | goto out; | |
1203 | br_multicast_find_del_pg(br, pg); | |
9116ffbf NA |
1204 | } else { |
1205 | br_multicast_fwd_src_handle(src); | |
8b671779 | 1206 | } |
9116ffbf | 1207 | |
8b671779 NA |
1208 | out: |
1209 | spin_unlock(&br->multicast_lock); | |
1210 | } | |
1211 | ||
474ddb37 | 1212 | struct net_bridge_group_src * |
8b671779 NA |
1213 | br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip) |
1214 | { | |
1215 | struct net_bridge_group_src *ent; | |
1216 | ||
1217 | switch (ip->proto) { | |
1218 | case htons(ETH_P_IP): | |
1219 | hlist_for_each_entry(ent, &pg->src_list, node) | |
deb96566 | 1220 | if (ip->src.ip4 == ent->addr.src.ip4) |
8b671779 NA |
1221 | return ent; |
1222 | break; | |
1223 | #if IS_ENABLED(CONFIG_IPV6) | |
1224 | case htons(ETH_P_IPV6): | |
1225 | hlist_for_each_entry(ent, &pg->src_list, node) | |
deb96566 | 1226 | if (!ipv6_addr_cmp(&ent->addr.src.ip6, &ip->src.ip6)) |
8b671779 NA |
1227 | return ent; |
1228 | break; | |
1229 | #endif | |
1230 | } | |
1231 | ||
1232 | return NULL; | |
1233 | } | |
1234 | ||
fd0c6961 | 1235 | struct net_bridge_group_src * |
8b671779 NA |
1236 | br_multicast_new_group_src(struct net_bridge_port_group *pg, struct br_ip *src_ip) |
1237 | { | |
1238 | struct net_bridge_group_src *grp_src; | |
1239 | ||
1240 | if (unlikely(pg->src_ents >= PG_SRC_ENT_LIMIT)) | |
1241 | return NULL; | |
1242 | ||
1243 | switch (src_ip->proto) { | |
1244 | case htons(ETH_P_IP): | |
deb96566 NA |
1245 | if (ipv4_is_zeronet(src_ip->src.ip4) || |
1246 | ipv4_is_multicast(src_ip->src.ip4)) | |
8b671779 NA |
1247 | return NULL; |
1248 | break; | |
1249 | #if IS_ENABLED(CONFIG_IPV6) | |
1250 | case htons(ETH_P_IPV6): | |
deb96566 NA |
1251 | if (ipv6_addr_any(&src_ip->src.ip6) || |
1252 | ipv6_addr_is_multicast(&src_ip->src.ip6)) | |
8b671779 NA |
1253 | return NULL; |
1254 | break; | |
1255 | #endif | |
1256 | } | |
1257 | ||
1258 | grp_src = kzalloc(sizeof(*grp_src), GFP_ATOMIC); | |
1259 | if (unlikely(!grp_src)) | |
1260 | return NULL; | |
1261 | ||
1262 | grp_src->pg = pg; | |
085b53c8 | 1263 | grp_src->br = pg->key.port->br; |
8b671779 | 1264 | grp_src->addr = *src_ip; |
e12cec65 | 1265 | grp_src->mcast_gc.destroy = br_multicast_destroy_group_src; |
8b671779 NA |
1266 | timer_setup(&grp_src->timer, br_multicast_group_src_expired, 0); |
1267 | ||
1268 | hlist_add_head_rcu(&grp_src->node, &pg->src_list); | |
1269 | pg->src_ents++; | |
1270 | ||
1271 | return grp_src; | |
1272 | } | |
1273 | ||
cfd56754 CW |
1274 | struct net_bridge_port_group *br_multicast_new_port_group( |
1275 | struct net_bridge_port *port, | |
f86c3e2c | 1276 | const struct br_ip *group, |
ccb1c31a | 1277 | struct net_bridge_port_group __rcu *next, |
6db6f0ea | 1278 | unsigned char flags, |
8b671779 | 1279 | const unsigned char *src, |
8f8cb77e NA |
1280 | u8 filter_mode, |
1281 | u8 rt_protocol) | |
cfd56754 CW |
1282 | { |
1283 | struct net_bridge_port_group *p; | |
1284 | ||
1285 | p = kzalloc(sizeof(*p), GFP_ATOMIC); | |
1286 | if (unlikely(!p)) | |
1287 | return NULL; | |
1288 | ||
085b53c8 NA |
1289 | p->key.addr = *group; |
1290 | p->key.port = port; | |
9d06b6d8 | 1291 | p->flags = flags; |
8b671779 | 1292 | p->filter_mode = filter_mode; |
8f8cb77e | 1293 | p->rt_protocol = rt_protocol; |
5b163288 | 1294 | p->eht_host_tree = RB_ROOT; |
baa74d39 | 1295 | p->eht_set_tree = RB_ROOT; |
e12cec65 | 1296 | p->mcast_gc.destroy = br_multicast_destroy_port_group; |
8b671779 | 1297 | INIT_HLIST_HEAD(&p->src_list); |
085b53c8 NA |
1298 | |
1299 | if (!br_multicast_is_star_g(group) && | |
1300 | rhashtable_lookup_insert_fast(&port->br->sg_port_tbl, &p->rhnode, | |
1301 | br_sg_port_rht_params)) { | |
1302 | kfree(p); | |
1303 | return NULL; | |
1304 | } | |
1305 | ||
eca2a43b | 1306 | rcu_assign_pointer(p->next, next); |
88c1f37f | 1307 | timer_setup(&p->timer, br_multicast_port_group_expired, 0); |
42c11ccf NA |
1308 | timer_setup(&p->rexmit_timer, br_multicast_port_group_rexmit, 0); |
1309 | hlist_add_head(&p->mglist, &port->mglist); | |
6db6f0ea FF |
1310 | |
1311 | if (src) | |
1312 | memcpy(p->eth_addr, src, ETH_ALEN); | |
1313 | else | |
1bfe45f4 | 1314 | eth_broadcast_addr(p->eth_addr); |
6db6f0ea | 1315 | |
cfd56754 CW |
1316 | return p; |
1317 | } | |
1318 | ||
58d913a3 NA |
1319 | void br_multicast_host_join(const struct net_bridge_mcast *brmctx, |
1320 | struct net_bridge_mdb_entry *mp, bool notify) | |
1bc844ee NA |
1321 | { |
1322 | if (!mp->host_joined) { | |
1323 | mp->host_joined = true; | |
094b82fd NA |
1324 | if (br_multicast_is_star_g(&mp->addr)) |
1325 | br_multicast_star_g_host_state(mp); | |
1bc844ee | 1326 | if (notify) |
81f19838 | 1327 | br_mdb_notify(mp->br->dev, mp, NULL, RTM_NEWMDB); |
1bc844ee | 1328 | } |
955062b0 NA |
1329 | |
1330 | if (br_group_is_l2(&mp->addr)) | |
1331 | return; | |
1332 | ||
58d913a3 | 1333 | mod_timer(&mp->timer, jiffies + brmctx->multicast_membership_interval); |
1bc844ee NA |
1334 | } |
1335 | ||
1336 | void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify) | |
1337 | { | |
1338 | if (!mp->host_joined) | |
1339 | return; | |
1340 | ||
1341 | mp->host_joined = false; | |
094b82fd NA |
1342 | if (br_multicast_is_star_g(&mp->addr)) |
1343 | br_multicast_star_g_host_state(mp); | |
1bc844ee | 1344 | if (notify) |
81f19838 | 1345 | br_mdb_notify(mp->br->dev, mp, NULL, RTM_DELMDB); |
1bc844ee NA |
1346 | } |
1347 | ||
b0812368 | 1348 | static struct net_bridge_port_group * |
adc47037 NA |
1349 | __br_multicast_add_group(struct net_bridge_mcast *brmctx, |
1350 | struct net_bridge_mcast_port *pmctx, | |
b0812368 NA |
1351 | struct br_ip *group, |
1352 | const unsigned char *src, | |
1353 | u8 filter_mode, | |
9116ffbf NA |
1354 | bool igmpv2_mldv1, |
1355 | bool blocked) | |
eb1d1641 | 1356 | { |
e8051688 | 1357 | struct net_bridge_port_group __rcu **pp; |
b0812368 | 1358 | struct net_bridge_port_group *p = NULL; |
5e923585 | 1359 | struct net_bridge_mdb_entry *mp; |
454594f3 | 1360 | unsigned long now = jiffies; |
eb1d1641 | 1361 | |
4cdd0d10 | 1362 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
eb1d1641 HX |
1363 | goto out; |
1364 | ||
adc47037 | 1365 | mp = br_multicast_new_group(brmctx->br, group); |
4c0833bc | 1366 | if (IS_ERR(mp)) |
1697291d | 1367 | return ERR_CAST(mp); |
eb1d1641 | 1368 | |
adc47037 | 1369 | if (!pmctx) { |
58d913a3 | 1370 | br_multicast_host_join(brmctx, mp, true); |
eb1d1641 HX |
1371 | goto out; |
1372 | } | |
1373 | ||
e8051688 | 1374 | for (pp = &mp->ports; |
adc47037 | 1375 | (p = mlock_dereference(*pp, brmctx->br)) != NULL; |
e8051688 | 1376 | pp = &p->next) { |
adc47037 | 1377 | if (br_port_group_equal(p, pmctx->port, src)) |
454594f3 | 1378 | goto found; |
adc47037 | 1379 | if ((unsigned long)p->key.port < (unsigned long)pmctx->port) |
eb1d1641 HX |
1380 | break; |
1381 | } | |
1382 | ||
adc47037 | 1383 | p = br_multicast_new_port_group(pmctx->port, group, *pp, 0, src, |
955062b0 | 1384 | filter_mode, RTPROT_KERNEL); |
b0812368 NA |
1385 | if (unlikely(!p)) { |
1386 | p = ERR_PTR(-ENOMEM); | |
1387 | goto out; | |
1388 | } | |
eb1d1641 | 1389 | rcu_assign_pointer(*pp, p); |
9116ffbf NA |
1390 | if (blocked) |
1391 | p->flags |= MDB_PG_FLAGS_BLOCKED; | |
adc47037 | 1392 | br_mdb_notify(brmctx->br->dev, mp, p, RTM_NEWMDB); |
eb1d1641 | 1393 | |
454594f3 | 1394 | found: |
0436862e | 1395 | if (igmpv2_mldv1) |
d3d065c0 | 1396 | mod_timer(&p->timer, |
adc47037 | 1397 | now + brmctx->multicast_membership_interval); |
81f19838 | 1398 | |
eb1d1641 | 1399 | out: |
b0812368 NA |
1400 | return p; |
1401 | } | |
1402 | ||
adc47037 NA |
1403 | static int br_multicast_add_group(struct net_bridge_mcast *brmctx, |
1404 | struct net_bridge_mcast_port *pmctx, | |
b0812368 NA |
1405 | struct br_ip *group, |
1406 | const unsigned char *src, | |
1407 | u8 filter_mode, | |
1408 | bool igmpv2_mldv1) | |
1409 | { | |
1410 | struct net_bridge_port_group *pg; | |
1411 | int err; | |
eb1d1641 | 1412 | |
adc47037 NA |
1413 | spin_lock(&brmctx->br->multicast_lock); |
1414 | pg = __br_multicast_add_group(brmctx, pmctx, group, src, filter_mode, | |
9116ffbf | 1415 | igmpv2_mldv1, false); |
b0812368 | 1416 | /* NULL is considered valid for host joined groups */ |
8d21c882 | 1417 | err = PTR_ERR_OR_ZERO(pg); |
adc47037 | 1418 | spin_unlock(&brmctx->br->multicast_lock); |
b0812368 | 1419 | |
eb1d1641 HX |
1420 | return err; |
1421 | } | |
1422 | ||
adc47037 NA |
1423 | static int br_ip4_multicast_add_group(struct net_bridge_mcast *brmctx, |
1424 | struct net_bridge_mcast_port *pmctx, | |
b0e9a30d | 1425 | __be32 group, |
6db6f0ea | 1426 | __u16 vid, |
8b671779 NA |
1427 | const unsigned char *src, |
1428 | bool igmpv2) | |
8ef2a9a5 YH |
1429 | { |
1430 | struct br_ip br_group; | |
8b671779 | 1431 | u8 filter_mode; |
8ef2a9a5 YH |
1432 | |
1433 | if (ipv4_is_local_multicast(group)) | |
1434 | return 0; | |
1435 | ||
1515a63f | 1436 | memset(&br_group, 0, sizeof(br_group)); |
eab3227b | 1437 | br_group.dst.ip4 = group; |
8ef2a9a5 | 1438 | br_group.proto = htons(ETH_P_IP); |
b0e9a30d | 1439 | br_group.vid = vid; |
8b671779 | 1440 | filter_mode = igmpv2 ? MCAST_EXCLUDE : MCAST_INCLUDE; |
8ef2a9a5 | 1441 | |
adc47037 NA |
1442 | return br_multicast_add_group(brmctx, pmctx, &br_group, src, |
1443 | filter_mode, igmpv2); | |
8ef2a9a5 YH |
1444 | } |
1445 | ||
dfd56b8b | 1446 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
1447 | static int br_ip6_multicast_add_group(struct net_bridge_mcast *brmctx, |
1448 | struct net_bridge_mcast_port *pmctx, | |
b0e9a30d | 1449 | const struct in6_addr *group, |
6db6f0ea | 1450 | __u16 vid, |
8b671779 NA |
1451 | const unsigned char *src, |
1452 | bool mldv1) | |
08b202b6 YH |
1453 | { |
1454 | struct br_ip br_group; | |
8b671779 | 1455 | u8 filter_mode; |
08b202b6 | 1456 | |
3c3769e6 | 1457 | if (ipv6_addr_is_ll_all_nodes(group)) |
08b202b6 YH |
1458 | return 0; |
1459 | ||
19e3a9c9 | 1460 | memset(&br_group, 0, sizeof(br_group)); |
eab3227b | 1461 | br_group.dst.ip6 = *group; |
9cc6e0c4 | 1462 | br_group.proto = htons(ETH_P_IPV6); |
b0e9a30d | 1463 | br_group.vid = vid; |
8b671779 | 1464 | filter_mode = mldv1 ? MCAST_EXCLUDE : MCAST_INCLUDE; |
08b202b6 | 1465 | |
adc47037 NA |
1466 | return br_multicast_add_group(brmctx, pmctx, &br_group, src, |
1467 | filter_mode, mldv1); | |
08b202b6 YH |
1468 | } |
1469 | #endif | |
1470 | ||
ed2d3597 LL |
1471 | static bool br_multicast_rport_del(struct hlist_node *rlist) |
1472 | { | |
1473 | if (hlist_unhashed(rlist)) | |
1474 | return false; | |
1475 | ||
1476 | hlist_del_init_rcu(rlist); | |
1477 | return true; | |
1478 | } | |
1479 | ||
adc47037 | 1480 | static bool br_ip4_multicast_rport_del(struct net_bridge_mcast_port *pmctx) |
ed2d3597 | 1481 | { |
adc47037 | 1482 | return br_multicast_rport_del(&pmctx->ip4_rlist); |
ed2d3597 LL |
1483 | } |
1484 | ||
adc47037 | 1485 | static bool br_ip6_multicast_rport_del(struct net_bridge_mcast_port *pmctx) |
a3c02e76 LL |
1486 | { |
1487 | #if IS_ENABLED(CONFIG_IPV6) | |
adc47037 | 1488 | return br_multicast_rport_del(&pmctx->ip6_rlist); |
a3c02e76 LL |
1489 | #else |
1490 | return false; | |
1491 | #endif | |
1492 | } | |
1493 | ||
9632233e | 1494 | static void br_multicast_router_expired(struct net_bridge_mcast_port *pmctx, |
ee5fb222 LL |
1495 | struct timer_list *t, |
1496 | struct hlist_node *rlist) | |
eb1d1641 | 1497 | { |
9632233e | 1498 | struct net_bridge *br = pmctx->port->br; |
ed2d3597 | 1499 | bool del; |
eb1d1641 HX |
1500 | |
1501 | spin_lock(&br->multicast_lock); | |
9632233e NA |
1502 | if (pmctx->multicast_router == MDB_RTR_TYPE_DISABLED || |
1503 | pmctx->multicast_router == MDB_RTR_TYPE_PERM || | |
ee5fb222 | 1504 | timer_pending(t)) |
eb1d1641 HX |
1505 | goto out; |
1506 | ||
ed2d3597 | 1507 | del = br_multicast_rport_del(rlist); |
adc47037 | 1508 | br_multicast_rport_del_notify(pmctx, del); |
eb1d1641 HX |
1509 | out: |
1510 | spin_unlock(&br->multicast_lock); | |
1511 | } | |
1512 | ||
ee5fb222 LL |
1513 | static void br_ip4_multicast_router_expired(struct timer_list *t) |
1514 | { | |
9632233e NA |
1515 | struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t, |
1516 | ip4_mc_router_timer); | |
ee5fb222 | 1517 | |
9632233e | 1518 | br_multicast_router_expired(pmctx, t, &pmctx->ip4_rlist); |
ee5fb222 LL |
1519 | } |
1520 | ||
a3c02e76 LL |
1521 | #if IS_ENABLED(CONFIG_IPV6) |
1522 | static void br_ip6_multicast_router_expired(struct timer_list *t) | |
1523 | { | |
9632233e NA |
1524 | struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t, |
1525 | ip6_mc_router_timer); | |
a3c02e76 | 1526 | |
9632233e | 1527 | br_multicast_router_expired(pmctx, t, &pmctx->ip6_rlist); |
a3c02e76 LL |
1528 | } |
1529 | #endif | |
1530 | ||
77041420 YG |
1531 | static void br_mc_router_state_change(struct net_bridge *p, |
1532 | bool is_mc_router) | |
1533 | { | |
1534 | struct switchdev_attr attr = { | |
1535 | .orig_dev = p->dev, | |
1536 | .id = SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, | |
1537 | .flags = SWITCHDEV_F_DEFER, | |
1538 | .u.mrouter = is_mc_router, | |
1539 | }; | |
1540 | ||
dcbdf135 | 1541 | switchdev_port_attr_set(p->dev, &attr, NULL); |
77041420 YG |
1542 | } |
1543 | ||
d3d065c0 | 1544 | static void br_multicast_local_router_expired(struct net_bridge_mcast *brmctx, |
ee5fb222 | 1545 | struct timer_list *timer) |
eb1d1641 | 1546 | { |
d3d065c0 NA |
1547 | spin_lock(&brmctx->br->multicast_lock); |
1548 | if (brmctx->multicast_router == MDB_RTR_TYPE_DISABLED || | |
1549 | brmctx->multicast_router == MDB_RTR_TYPE_PERM || | |
1550 | br_ip4_multicast_is_router(brmctx) || | |
1551 | br_ip6_multicast_is_router(brmctx)) | |
77041420 YG |
1552 | goto out; |
1553 | ||
d3d065c0 | 1554 | br_mc_router_state_change(brmctx->br, false); |
77041420 | 1555 | out: |
d3d065c0 | 1556 | spin_unlock(&brmctx->br->multicast_lock); |
eb1d1641 HX |
1557 | } |
1558 | ||
ee5fb222 LL |
1559 | static void br_ip4_multicast_local_router_expired(struct timer_list *t) |
1560 | { | |
d3d065c0 NA |
1561 | struct net_bridge_mcast *brmctx = from_timer(brmctx, t, |
1562 | ip4_mc_router_timer); | |
ee5fb222 | 1563 | |
d3d065c0 | 1564 | br_multicast_local_router_expired(brmctx, t); |
ee5fb222 LL |
1565 | } |
1566 | ||
a3c02e76 LL |
1567 | #if IS_ENABLED(CONFIG_IPV6) |
1568 | static void br_ip6_multicast_local_router_expired(struct timer_list *t) | |
1569 | { | |
d3d065c0 NA |
1570 | struct net_bridge_mcast *brmctx = from_timer(brmctx, t, |
1571 | ip6_mc_router_timer); | |
a3c02e76 | 1572 | |
d3d065c0 | 1573 | br_multicast_local_router_expired(brmctx, t); |
a3c02e76 LL |
1574 | } |
1575 | #endif | |
1576 | ||
d3d065c0 | 1577 | static void br_multicast_querier_expired(struct net_bridge_mcast *brmctx, |
90010b36 | 1578 | struct bridge_mcast_own_query *query) |
c83b8fab | 1579 | { |
d3d065c0 NA |
1580 | spin_lock(&brmctx->br->multicast_lock); |
1581 | if (!netif_running(brmctx->br->dev) || | |
4cdd0d10 | 1582 | br_multicast_ctx_vlan_global_disabled(brmctx) || |
d3d065c0 | 1583 | !br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED)) |
c83b8fab HX |
1584 | goto out; |
1585 | ||
adc47037 | 1586 | br_multicast_start_querier(brmctx, query); |
c83b8fab HX |
1587 | |
1588 | out: | |
d3d065c0 | 1589 | spin_unlock(&brmctx->br->multicast_lock); |
c83b8fab HX |
1590 | } |
1591 | ||
88c1f37f | 1592 | static void br_ip4_multicast_querier_expired(struct timer_list *t) |
cc0fdd80 | 1593 | { |
d3d065c0 NA |
1594 | struct net_bridge_mcast *brmctx = from_timer(brmctx, t, |
1595 | ip4_other_query.timer); | |
cc0fdd80 | 1596 | |
d3d065c0 | 1597 | br_multicast_querier_expired(brmctx, &brmctx->ip4_own_query); |
cc0fdd80 LL |
1598 | } |
1599 | ||
1600 | #if IS_ENABLED(CONFIG_IPV6) | |
88c1f37f | 1601 | static void br_ip6_multicast_querier_expired(struct timer_list *t) |
cc0fdd80 | 1602 | { |
d3d065c0 NA |
1603 | struct net_bridge_mcast *brmctx = from_timer(brmctx, t, |
1604 | ip6_other_query.timer); | |
cc0fdd80 | 1605 | |
d3d065c0 | 1606 | br_multicast_querier_expired(brmctx, &brmctx->ip6_own_query); |
cc0fdd80 LL |
1607 | } |
1608 | #endif | |
1609 | ||
adc47037 | 1610 | static void br_multicast_select_own_querier(struct net_bridge_mcast *brmctx, |
dc4eb53a LL |
1611 | struct br_ip *ip, |
1612 | struct sk_buff *skb) | |
1613 | { | |
1614 | if (ip->proto == htons(ETH_P_IP)) | |
d3d065c0 | 1615 | brmctx->ip4_querier.addr.src.ip4 = ip_hdr(skb)->saddr; |
dc4eb53a LL |
1616 | #if IS_ENABLED(CONFIG_IPV6) |
1617 | else | |
d3d065c0 | 1618 | brmctx->ip6_querier.addr.src.ip6 = ipv6_hdr(skb)->saddr; |
dc4eb53a LL |
1619 | #endif |
1620 | } | |
1621 | ||
adc47037 NA |
1622 | static void __br_multicast_send_query(struct net_bridge_mcast *brmctx, |
1623 | struct net_bridge_mcast_port *pmctx, | |
438ef2d0 NA |
1624 | struct net_bridge_port_group *pg, |
1625 | struct br_ip *ip_dst, | |
1626 | struct br_ip *group, | |
1627 | bool with_srcs, | |
42c11ccf NA |
1628 | u8 sflag, |
1629 | bool *need_rexmit) | |
eb1d1641 | 1630 | { |
438ef2d0 | 1631 | bool over_lmqt = !!sflag; |
eb1d1641 | 1632 | struct sk_buff *skb; |
1080ab95 | 1633 | u8 igmp_type; |
eb1d1641 | 1634 | |
cb486ce9 NA |
1635 | if (!br_multicast_ctx_should_use(brmctx, pmctx) || |
1636 | !br_multicast_ctx_matches_vlan_snooping(brmctx)) | |
615cc23e NA |
1637 | return; |
1638 | ||
438ef2d0 | 1639 | again_under_lmqt: |
615cc23e NA |
1640 | skb = br_multicast_alloc_query(brmctx, pmctx, pg, ip_dst, group, |
1641 | with_srcs, over_lmqt, sflag, &igmp_type, | |
42c11ccf | 1642 | need_rexmit); |
eb1d1641 | 1643 | if (!skb) |
8ef2a9a5 | 1644 | return; |
eb1d1641 | 1645 | |
adc47037 NA |
1646 | if (pmctx) { |
1647 | skb->dev = pmctx->port->dev; | |
1648 | br_multicast_count(brmctx->br, pmctx->port, skb, igmp_type, | |
1080ab95 | 1649 | BR_MCAST_DIR_TX); |
29a26a56 | 1650 | NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, |
adc47037 | 1651 | dev_net(pmctx->port->dev), NULL, skb, NULL, skb->dev, |
f0b4eece | 1652 | br_dev_queue_push_xmit); |
438ef2d0 NA |
1653 | |
1654 | if (over_lmqt && with_srcs && sflag) { | |
1655 | over_lmqt = false; | |
1656 | goto again_under_lmqt; | |
1657 | } | |
dc4eb53a | 1658 | } else { |
adc47037 NA |
1659 | br_multicast_select_own_querier(brmctx, group, skb); |
1660 | br_multicast_count(brmctx->br, NULL, skb, igmp_type, | |
1080ab95 | 1661 | BR_MCAST_DIR_RX); |
eb1d1641 | 1662 | netif_rx(skb); |
dc4eb53a | 1663 | } |
8ef2a9a5 YH |
1664 | } |
1665 | ||
67b746f9 NA |
1666 | static void br_multicast_read_querier(const struct bridge_mcast_querier *querier, |
1667 | struct bridge_mcast_querier *dest) | |
1668 | { | |
1669 | unsigned int seq; | |
1670 | ||
1671 | memset(dest, 0, sizeof(*dest)); | |
1672 | do { | |
1673 | seq = read_seqcount_begin(&querier->seq); | |
1674 | dest->port_ifidx = querier->port_ifidx; | |
1675 | memcpy(&dest->addr, &querier->addr, sizeof(struct br_ip)); | |
1676 | } while (read_seqcount_retry(&querier->seq, seq)); | |
1677 | } | |
1678 | ||
1679 | static void br_multicast_update_querier(struct net_bridge_mcast *brmctx, | |
1680 | struct bridge_mcast_querier *querier, | |
1681 | int ifindex, | |
1682 | struct br_ip *saddr) | |
1683 | { | |
67b746f9 NA |
1684 | write_seqcount_begin(&querier->seq); |
1685 | querier->port_ifidx = ifindex; | |
1686 | memcpy(&querier->addr, saddr, sizeof(*saddr)); | |
1687 | write_seqcount_end(&querier->seq); | |
1688 | } | |
1689 | ||
adc47037 NA |
1690 | static void br_multicast_send_query(struct net_bridge_mcast *brmctx, |
1691 | struct net_bridge_mcast_port *pmctx, | |
90010b36 | 1692 | struct bridge_mcast_own_query *own_query) |
8ef2a9a5 | 1693 | { |
90010b36 | 1694 | struct bridge_mcast_other_query *other_query = NULL; |
67b746f9 | 1695 | struct bridge_mcast_querier *querier; |
5e923585 NA |
1696 | struct br_ip br_group; |
1697 | unsigned long time; | |
8ef2a9a5 | 1698 | |
4cdd0d10 | 1699 | if (!br_multicast_ctx_should_use(brmctx, pmctx) || |
adc47037 | 1700 | !br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED) || |
4d5b4e84 | 1701 | !brmctx->multicast_querier) |
8ef2a9a5 YH |
1702 | return; |
1703 | ||
eab3227b | 1704 | memset(&br_group.dst, 0, sizeof(br_group.dst)); |
08b202b6 | 1705 | |
adc47037 NA |
1706 | if (pmctx ? (own_query == &pmctx->ip4_own_query) : |
1707 | (own_query == &brmctx->ip4_own_query)) { | |
67b746f9 | 1708 | querier = &brmctx->ip4_querier; |
d3d065c0 | 1709 | other_query = &brmctx->ip4_other_query; |
cc0fdd80 | 1710 | br_group.proto = htons(ETH_P_IP); |
dfd56b8b | 1711 | #if IS_ENABLED(CONFIG_IPV6) |
cc0fdd80 | 1712 | } else { |
67b746f9 | 1713 | querier = &brmctx->ip6_querier; |
d3d065c0 | 1714 | other_query = &brmctx->ip6_other_query; |
cc0fdd80 | 1715 | br_group.proto = htons(ETH_P_IPV6); |
08b202b6 | 1716 | #endif |
cc0fdd80 LL |
1717 | } |
1718 | ||
90010b36 | 1719 | if (!other_query || timer_pending(&other_query->timer)) |
cc0fdd80 LL |
1720 | return; |
1721 | ||
67b746f9 NA |
1722 | /* we're about to select ourselves as querier */ |
1723 | if (!pmctx && querier->port_ifidx) { | |
1724 | struct br_ip zeroip = {}; | |
1725 | ||
1726 | br_multicast_update_querier(brmctx, querier, 0, &zeroip); | |
1727 | } | |
1728 | ||
adc47037 NA |
1729 | __br_multicast_send_query(brmctx, pmctx, NULL, NULL, &br_group, false, |
1730 | 0, NULL); | |
eb1d1641 | 1731 | |
eb1d1641 | 1732 | time = jiffies; |
d3d065c0 NA |
1733 | time += own_query->startup_sent < brmctx->multicast_startup_query_count ? |
1734 | brmctx->multicast_startup_query_interval : | |
1735 | brmctx->multicast_query_interval; | |
90010b36 | 1736 | mod_timer(&own_query->timer, time); |
eb1d1641 HX |
1737 | } |
1738 | ||
90010b36 | 1739 | static void |
9632233e | 1740 | br_multicast_port_query_expired(struct net_bridge_mcast_port *pmctx, |
90010b36 | 1741 | struct bridge_mcast_own_query *query) |
eb1d1641 | 1742 | { |
9632233e | 1743 | struct net_bridge *br = pmctx->port->br; |
4cdd0d10 | 1744 | struct net_bridge_mcast *brmctx; |
eb1d1641 HX |
1745 | |
1746 | spin_lock(&br->multicast_lock); | |
4cdd0d10 | 1747 | if (br_multicast_port_ctx_state_stopped(pmctx)) |
eb1d1641 | 1748 | goto out; |
615cc23e | 1749 | |
4cdd0d10 NA |
1750 | brmctx = br_multicast_port_ctx_get_global(pmctx); |
1751 | if (query->startup_sent < brmctx->multicast_startup_query_count) | |
cc0fdd80 | 1752 | query->startup_sent++; |
eb1d1641 | 1753 | |
4cdd0d10 | 1754 | br_multicast_send_query(brmctx, pmctx, query); |
eb1d1641 HX |
1755 | |
1756 | out: | |
1757 | spin_unlock(&br->multicast_lock); | |
1758 | } | |
1759 | ||
88c1f37f | 1760 | static void br_ip4_multicast_port_query_expired(struct timer_list *t) |
cc0fdd80 | 1761 | { |
9632233e NA |
1762 | struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t, |
1763 | ip4_own_query.timer); | |
cc0fdd80 | 1764 | |
9632233e | 1765 | br_multicast_port_query_expired(pmctx, &pmctx->ip4_own_query); |
cc0fdd80 LL |
1766 | } |
1767 | ||
1768 | #if IS_ENABLED(CONFIG_IPV6) | |
88c1f37f | 1769 | static void br_ip6_multicast_port_query_expired(struct timer_list *t) |
cc0fdd80 | 1770 | { |
9632233e NA |
1771 | struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t, |
1772 | ip6_own_query.timer); | |
cc0fdd80 | 1773 | |
9632233e | 1774 | br_multicast_port_query_expired(pmctx, &pmctx->ip6_own_query); |
cc0fdd80 LL |
1775 | } |
1776 | #endif | |
1777 | ||
42c11ccf NA |
1778 | static void br_multicast_port_group_rexmit(struct timer_list *t) |
1779 | { | |
1780 | struct net_bridge_port_group *pg = from_timer(pg, t, rexmit_timer); | |
1781 | struct bridge_mcast_other_query *other_query = NULL; | |
085b53c8 | 1782 | struct net_bridge *br = pg->key.port->br; |
adc47037 NA |
1783 | struct net_bridge_mcast_port *pmctx; |
1784 | struct net_bridge_mcast *brmctx; | |
42c11ccf NA |
1785 | bool need_rexmit = false; |
1786 | ||
1787 | spin_lock(&br->multicast_lock); | |
1788 | if (!netif_running(br->dev) || hlist_unhashed(&pg->mglist) || | |
4d5b4e84 | 1789 | !br_opt_get(br, BROPT_MULTICAST_ENABLED)) |
42c11ccf NA |
1790 | goto out; |
1791 | ||
eb1593a0 NA |
1792 | pmctx = br_multicast_pg_to_port_ctx(pg); |
1793 | if (!pmctx) | |
1794 | goto out; | |
1795 | brmctx = br_multicast_port_ctx_get_global(pmctx); | |
4d5b4e84 NA |
1796 | if (!brmctx->multicast_querier) |
1797 | goto out; | |
1798 | ||
085b53c8 | 1799 | if (pg->key.addr.proto == htons(ETH_P_IP)) |
d3d065c0 | 1800 | other_query = &brmctx->ip4_other_query; |
42c11ccf NA |
1801 | #if IS_ENABLED(CONFIG_IPV6) |
1802 | else | |
d3d065c0 | 1803 | other_query = &brmctx->ip6_other_query; |
42c11ccf NA |
1804 | #endif |
1805 | ||
1806 | if (!other_query || timer_pending(&other_query->timer)) | |
1807 | goto out; | |
1808 | ||
1809 | if (pg->grp_query_rexmit_cnt) { | |
1810 | pg->grp_query_rexmit_cnt--; | |
adc47037 | 1811 | __br_multicast_send_query(brmctx, pmctx, pg, &pg->key.addr, |
085b53c8 | 1812 | &pg->key.addr, false, 1, NULL); |
42c11ccf | 1813 | } |
adc47037 | 1814 | __br_multicast_send_query(brmctx, pmctx, pg, &pg->key.addr, |
085b53c8 | 1815 | &pg->key.addr, true, 0, &need_rexmit); |
42c11ccf NA |
1816 | |
1817 | if (pg->grp_query_rexmit_cnt || need_rexmit) | |
1818 | mod_timer(&pg->rexmit_timer, jiffies + | |
d3d065c0 | 1819 | brmctx->multicast_last_member_interval); |
42c11ccf NA |
1820 | out: |
1821 | spin_unlock(&br->multicast_lock); | |
1822 | } | |
1823 | ||
ae1ea84b FF |
1824 | static int br_mc_disabled_update(struct net_device *dev, bool value, |
1825 | struct netlink_ext_ack *extack) | |
147c1e9b NF |
1826 | { |
1827 | struct switchdev_attr attr = { | |
1828 | .orig_dev = dev, | |
1829 | .id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, | |
1830 | .flags = SWITCHDEV_F_DEFER, | |
13cefad2 | 1831 | .u.mc_disabled = !value, |
147c1e9b NF |
1832 | }; |
1833 | ||
ae1ea84b | 1834 | return switchdev_port_attr_set(dev, &attr, extack); |
147c1e9b NF |
1835 | } |
1836 | ||
613d61db NA |
1837 | void br_multicast_port_ctx_init(struct net_bridge_port *port, |
1838 | struct net_bridge_vlan *vlan, | |
1839 | struct net_bridge_mcast_port *pmctx) | |
eb1d1641 | 1840 | { |
9632233e | 1841 | pmctx->port = port; |
613d61db | 1842 | pmctx->vlan = vlan; |
9632233e NA |
1843 | pmctx->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; |
1844 | timer_setup(&pmctx->ip4_mc_router_timer, | |
ee5fb222 | 1845 | br_ip4_multicast_router_expired, 0); |
9632233e | 1846 | timer_setup(&pmctx->ip4_own_query.timer, |
88c1f37f | 1847 | br_ip4_multicast_port_query_expired, 0); |
cc0fdd80 | 1848 | #if IS_ENABLED(CONFIG_IPV6) |
9632233e | 1849 | timer_setup(&pmctx->ip6_mc_router_timer, |
a3c02e76 | 1850 | br_ip6_multicast_router_expired, 0); |
9632233e | 1851 | timer_setup(&pmctx->ip6_own_query.timer, |
88c1f37f | 1852 | br_ip6_multicast_port_query_expired, 0); |
cc0fdd80 | 1853 | #endif |
9632233e NA |
1854 | } |
1855 | ||
613d61db | 1856 | void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx) |
9632233e NA |
1857 | { |
1858 | #if IS_ENABLED(CONFIG_IPV6) | |
1859 | del_timer_sync(&pmctx->ip6_mc_router_timer); | |
1860 | #endif | |
1861 | del_timer_sync(&pmctx->ip4_mc_router_timer); | |
1862 | } | |
1863 | ||
1864 | int br_multicast_add_port(struct net_bridge_port *port) | |
1865 | { | |
1866 | int err; | |
1867 | ||
1868 | port->multicast_eht_hosts_limit = BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT; | |
613d61db | 1869 | br_multicast_port_ctx_init(port, NULL, &port->multicast_ctx); |
9632233e | 1870 | |
ae1ea84b FF |
1871 | err = br_mc_disabled_update(port->dev, |
1872 | br_opt_get(port->br, | |
1873 | BROPT_MULTICAST_ENABLED), | |
1874 | NULL); | |
68f5c12a | 1875 | if (err && err != -EOPNOTSUPP) |
ae1ea84b | 1876 | return err; |
147c1e9b | 1877 | |
1080ab95 NA |
1878 | port->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats); |
1879 | if (!port->mcast_stats) | |
1880 | return -ENOMEM; | |
1881 | ||
1882 | return 0; | |
eb1d1641 HX |
1883 | } |
1884 | ||
1885 | void br_multicast_del_port(struct net_bridge_port *port) | |
1886 | { | |
e10177ab SA |
1887 | struct net_bridge *br = port->br; |
1888 | struct net_bridge_port_group *pg; | |
e12cec65 | 1889 | HLIST_HEAD(deleted_head); |
e10177ab SA |
1890 | struct hlist_node *n; |
1891 | ||
1892 | /* Take care of the remaining groups, only perm ones should be left */ | |
1893 | spin_lock_bh(&br->multicast_lock); | |
1894 | hlist_for_each_entry_safe(pg, n, &port->mglist, mglist) | |
681590bd | 1895 | br_multicast_find_del_pg(br, pg); |
e12cec65 | 1896 | hlist_move_list(&br->mcast_gc_list, &deleted_head); |
e10177ab | 1897 | spin_unlock_bh(&br->multicast_lock); |
e12cec65 | 1898 | br_multicast_gc(&deleted_head); |
9632233e | 1899 | br_multicast_port_ctx_deinit(&port->multicast_ctx); |
1080ab95 | 1900 | free_percpu(port->mcast_stats); |
eb1d1641 HX |
1901 | } |
1902 | ||
90010b36 | 1903 | static void br_multicast_enable(struct bridge_mcast_own_query *query) |
561f1103 | 1904 | { |
cc0fdd80 | 1905 | query->startup_sent = 0; |
561f1103 | 1906 | |
cc0fdd80 LL |
1907 | if (try_to_del_timer_sync(&query->timer) >= 0 || |
1908 | del_timer(&query->timer)) | |
1909 | mod_timer(&query->timer, jiffies); | |
561f1103 HX |
1910 | } |
1911 | ||
adc47037 | 1912 | static void __br_multicast_enable_port_ctx(struct net_bridge_mcast_port *pmctx) |
eb1d1641 | 1913 | { |
adc47037 | 1914 | struct net_bridge *br = pmctx->port->br; |
7b54aaaf | 1915 | struct net_bridge_mcast *brmctx; |
eb1d1641 | 1916 | |
7b54aaaf NA |
1917 | brmctx = br_multicast_port_ctx_get_global(pmctx); |
1918 | if (!br_opt_get(br, BROPT_MULTICAST_ENABLED) || | |
1919 | !netif_running(br->dev)) | |
7cb3f921 | 1920 | return; |
eb1d1641 | 1921 | |
adc47037 | 1922 | br_multicast_enable(&pmctx->ip4_own_query); |
cc0fdd80 | 1923 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 | 1924 | br_multicast_enable(&pmctx->ip6_own_query); |
cc0fdd80 | 1925 | #endif |
adc47037 NA |
1926 | if (pmctx->multicast_router == MDB_RTR_TYPE_PERM) { |
1927 | br_ip4_multicast_add_router(brmctx, pmctx); | |
1928 | br_ip6_multicast_add_router(brmctx, pmctx); | |
a3c02e76 | 1929 | } |
7cb3f921 | 1930 | } |
eb1d1641 | 1931 | |
7cb3f921 NA |
1932 | void br_multicast_enable_port(struct net_bridge_port *port) |
1933 | { | |
1934 | struct net_bridge *br = port->br; | |
1935 | ||
f4b7002a | 1936 | spin_lock_bh(&br->multicast_lock); |
adc47037 | 1937 | __br_multicast_enable_port_ctx(&port->multicast_ctx); |
f4b7002a | 1938 | spin_unlock_bh(&br->multicast_lock); |
eb1d1641 HX |
1939 | } |
1940 | ||
7b54aaaf | 1941 | static void __br_multicast_disable_port_ctx(struct net_bridge_mcast_port *pmctx) |
eb1d1641 | 1942 | { |
eb1d1641 | 1943 | struct net_bridge_port_group *pg; |
b67bfe0d | 1944 | struct hlist_node *n; |
ed2d3597 | 1945 | bool del = false; |
eb1d1641 | 1946 | |
7b54aaaf NA |
1947 | hlist_for_each_entry_safe(pg, n, &pmctx->port->mglist, mglist) |
1948 | if (!(pg->flags & MDB_PG_FLAGS_PERMANENT) && | |
1949 | (!br_multicast_port_ctx_is_vlan(pmctx) || | |
1950 | pg->key.addr.vid == pmctx->vlan->vid)) | |
1951 | br_multicast_find_del_pg(pmctx->port->br, pg); | |
eb1d1641 | 1952 | |
adc47037 NA |
1953 | del |= br_ip4_multicast_rport_del(pmctx); |
1954 | del_timer(&pmctx->ip4_mc_router_timer); | |
1955 | del_timer(&pmctx->ip4_own_query.timer); | |
1956 | del |= br_ip6_multicast_rport_del(pmctx); | |
cc0fdd80 | 1957 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
1958 | del_timer(&pmctx->ip6_mc_router_timer); |
1959 | del_timer(&pmctx->ip6_own_query.timer); | |
cc0fdd80 | 1960 | #endif |
adc47037 | 1961 | br_multicast_rport_del_notify(pmctx, del); |
7b54aaaf NA |
1962 | } |
1963 | ||
1964 | void br_multicast_disable_port(struct net_bridge_port *port) | |
1965 | { | |
f4b7002a | 1966 | spin_lock_bh(&port->br->multicast_lock); |
7b54aaaf | 1967 | __br_multicast_disable_port_ctx(&port->multicast_ctx); |
f4b7002a | 1968 | spin_unlock_bh(&port->br->multicast_lock); |
eb1d1641 HX |
1969 | } |
1970 | ||
e6231bca NA |
1971 | static int __grp_src_delete_marked(struct net_bridge_port_group *pg) |
1972 | { | |
1973 | struct net_bridge_group_src *ent; | |
1974 | struct hlist_node *tmp; | |
1975 | int deleted = 0; | |
1976 | ||
1977 | hlist_for_each_entry_safe(ent, tmp, &pg->src_list, node) | |
1978 | if (ent->flags & BR_SGRP_F_DELETE) { | |
d5a10222 | 1979 | br_multicast_del_group_src(ent, false); |
e6231bca NA |
1980 | deleted++; |
1981 | } | |
1982 | ||
1983 | return deleted; | |
1984 | } | |
1985 | ||
b0812368 NA |
1986 | static void __grp_src_mod_timer(struct net_bridge_group_src *src, |
1987 | unsigned long expires) | |
1988 | { | |
1989 | mod_timer(&src->timer, expires); | |
1990 | br_multicast_fwd_src_handle(src); | |
1991 | } | |
1992 | ||
adc47037 NA |
1993 | static void __grp_src_query_marked_and_rexmit(struct net_bridge_mcast *brmctx, |
1994 | struct net_bridge_mcast_port *pmctx, | |
1995 | struct net_bridge_port_group *pg) | |
5bf1e00b NA |
1996 | { |
1997 | struct bridge_mcast_other_query *other_query = NULL; | |
d3d065c0 | 1998 | u32 lmqc = brmctx->multicast_last_member_count; |
5bf1e00b NA |
1999 | unsigned long lmqt, lmi, now = jiffies; |
2000 | struct net_bridge_group_src *ent; | |
2001 | ||
adc47037 NA |
2002 | if (!netif_running(brmctx->br->dev) || |
2003 | !br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED)) | |
5bf1e00b NA |
2004 | return; |
2005 | ||
085b53c8 | 2006 | if (pg->key.addr.proto == htons(ETH_P_IP)) |
d3d065c0 | 2007 | other_query = &brmctx->ip4_other_query; |
5bf1e00b NA |
2008 | #if IS_ENABLED(CONFIG_IPV6) |
2009 | else | |
d3d065c0 | 2010 | other_query = &brmctx->ip6_other_query; |
5bf1e00b NA |
2011 | #endif |
2012 | ||
adc47037 | 2013 | lmqt = now + br_multicast_lmqt(brmctx); |
5bf1e00b NA |
2014 | hlist_for_each_entry(ent, &pg->src_list, node) { |
2015 | if (ent->flags & BR_SGRP_F_SEND) { | |
2016 | ent->flags &= ~BR_SGRP_F_SEND; | |
2017 | if (ent->timer.expires > lmqt) { | |
4d5b4e84 | 2018 | if (brmctx->multicast_querier && |
5bf1e00b NA |
2019 | other_query && |
2020 | !timer_pending(&other_query->timer)) | |
2021 | ent->src_query_rexmit_cnt = lmqc; | |
b0812368 | 2022 | __grp_src_mod_timer(ent, lmqt); |
5bf1e00b NA |
2023 | } |
2024 | } | |
2025 | } | |
2026 | ||
4d5b4e84 | 2027 | if (!brmctx->multicast_querier || |
5bf1e00b NA |
2028 | !other_query || timer_pending(&other_query->timer)) |
2029 | return; | |
2030 | ||
adc47037 | 2031 | __br_multicast_send_query(brmctx, pmctx, pg, &pg->key.addr, |
085b53c8 | 2032 | &pg->key.addr, true, 1, NULL); |
5bf1e00b | 2033 | |
d3d065c0 | 2034 | lmi = now + brmctx->multicast_last_member_interval; |
5bf1e00b NA |
2035 | if (!timer_pending(&pg->rexmit_timer) || |
2036 | time_after(pg->rexmit_timer.expires, lmi)) | |
2037 | mod_timer(&pg->rexmit_timer, lmi); | |
2038 | } | |
2039 | ||
adc47037 NA |
2040 | static void __grp_send_query_and_rexmit(struct net_bridge_mcast *brmctx, |
2041 | struct net_bridge_mcast_port *pmctx, | |
2042 | struct net_bridge_port_group *pg) | |
5bf1e00b NA |
2043 | { |
2044 | struct bridge_mcast_other_query *other_query = NULL; | |
5bf1e00b NA |
2045 | unsigned long now = jiffies, lmi; |
2046 | ||
adc47037 NA |
2047 | if (!netif_running(brmctx->br->dev) || |
2048 | !br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED)) | |
5bf1e00b NA |
2049 | return; |
2050 | ||
085b53c8 | 2051 | if (pg->key.addr.proto == htons(ETH_P_IP)) |
d3d065c0 | 2052 | other_query = &brmctx->ip4_other_query; |
5bf1e00b NA |
2053 | #if IS_ENABLED(CONFIG_IPV6) |
2054 | else | |
d3d065c0 | 2055 | other_query = &brmctx->ip6_other_query; |
5bf1e00b NA |
2056 | #endif |
2057 | ||
4d5b4e84 | 2058 | if (brmctx->multicast_querier && |
5bf1e00b | 2059 | other_query && !timer_pending(&other_query->timer)) { |
d3d065c0 NA |
2060 | lmi = now + brmctx->multicast_last_member_interval; |
2061 | pg->grp_query_rexmit_cnt = brmctx->multicast_last_member_count - 1; | |
adc47037 | 2062 | __br_multicast_send_query(brmctx, pmctx, pg, &pg->key.addr, |
085b53c8 | 2063 | &pg->key.addr, false, 0, NULL); |
5bf1e00b NA |
2064 | if (!timer_pending(&pg->rexmit_timer) || |
2065 | time_after(pg->rexmit_timer.expires, lmi)) | |
2066 | mod_timer(&pg->rexmit_timer, lmi); | |
2067 | } | |
2068 | ||
2069 | if (pg->filter_mode == MCAST_EXCLUDE && | |
2070 | (!timer_pending(&pg->timer) || | |
adc47037 NA |
2071 | time_after(pg->timer.expires, now + br_multicast_lmqt(brmctx)))) |
2072 | mod_timer(&pg->timer, now + br_multicast_lmqt(brmctx)); | |
5bf1e00b NA |
2073 | } |
2074 | ||
0436862e NA |
2075 | /* State Msg type New state Actions |
2076 | * INCLUDE (A) IS_IN (B) INCLUDE (A+B) (B)=GMI | |
2077 | * INCLUDE (A) ALLOW (B) INCLUDE (A+B) (B)=GMI | |
2078 | * EXCLUDE (X,Y) ALLOW (A) EXCLUDE (X+A,Y-A) (A)=GMI | |
2079 | */ | |
adc47037 NA |
2080 | static bool br_multicast_isinc_allow(const struct net_bridge_mcast *brmctx, |
2081 | struct net_bridge_port_group *pg, void *h_addr, | |
474ddb37 NA |
2082 | void *srcs, u32 nsrcs, size_t addr_size, |
2083 | int grec_type) | |
0436862e | 2084 | { |
0436862e NA |
2085 | struct net_bridge_group_src *ent; |
2086 | unsigned long now = jiffies; | |
2087 | bool changed = false; | |
2088 | struct br_ip src_ip; | |
2089 | u32 src_idx; | |
2090 | ||
2091 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2092 | src_ip.proto = pg->key.addr.proto; |
0436862e | 2093 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2094 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
0436862e NA |
2095 | ent = br_multicast_find_group_src(pg, &src_ip); |
2096 | if (!ent) { | |
2097 | ent = br_multicast_new_group_src(pg, &src_ip); | |
2098 | if (ent) | |
2099 | changed = true; | |
2100 | } | |
2101 | ||
2102 | if (ent) | |
adc47037 | 2103 | __grp_src_mod_timer(ent, now + br_multicast_gmi(brmctx)); |
0436862e NA |
2104 | } |
2105 | ||
adc47037 NA |
2106 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2107 | grec_type)) | |
474ddb37 NA |
2108 | changed = true; |
2109 | ||
0436862e NA |
2110 | return changed; |
2111 | } | |
2112 | ||
e6231bca NA |
2113 | /* State Msg type New state Actions |
2114 | * INCLUDE (A) IS_EX (B) EXCLUDE (A*B,B-A) (B-A)=0 | |
2115 | * Delete (A-B) | |
2116 | * Group Timer=GMI | |
2117 | */ | |
adc47037 NA |
2118 | static void __grp_src_isexc_incl(const struct net_bridge_mcast *brmctx, |
2119 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2120 | void *srcs, u32 nsrcs, size_t addr_size, |
2121 | int grec_type) | |
e6231bca NA |
2122 | { |
2123 | struct net_bridge_group_src *ent; | |
2124 | struct br_ip src_ip; | |
2125 | u32 src_idx; | |
2126 | ||
2127 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2128 | ent->flags |= BR_SGRP_F_DELETE; | |
2129 | ||
2130 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2131 | src_ip.proto = pg->key.addr.proto; |
e6231bca | 2132 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2133 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
e6231bca NA |
2134 | ent = br_multicast_find_group_src(pg, &src_ip); |
2135 | if (ent) | |
2136 | ent->flags &= ~BR_SGRP_F_DELETE; | |
2137 | else | |
b0812368 NA |
2138 | ent = br_multicast_new_group_src(pg, &src_ip); |
2139 | if (ent) | |
2140 | br_multicast_fwd_src_handle(ent); | |
e6231bca NA |
2141 | } |
2142 | ||
adc47037 NA |
2143 | br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2144 | grec_type); | |
ddc255d9 | 2145 | |
e6231bca NA |
2146 | __grp_src_delete_marked(pg); |
2147 | } | |
2148 | ||
2149 | /* State Msg type New state Actions | |
2150 | * EXCLUDE (X,Y) IS_EX (A) EXCLUDE (A-Y,Y*A) (A-X-Y)=GMI | |
2151 | * Delete (X-A) | |
2152 | * Delete (Y-A) | |
2153 | * Group Timer=GMI | |
2154 | */ | |
adc47037 NA |
2155 | static bool __grp_src_isexc_excl(const struct net_bridge_mcast *brmctx, |
2156 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2157 | void *srcs, u32 nsrcs, size_t addr_size, |
2158 | int grec_type) | |
e6231bca | 2159 | { |
e6231bca NA |
2160 | struct net_bridge_group_src *ent; |
2161 | unsigned long now = jiffies; | |
2162 | bool changed = false; | |
2163 | struct br_ip src_ip; | |
2164 | u32 src_idx; | |
2165 | ||
2166 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2167 | ent->flags |= BR_SGRP_F_DELETE; | |
2168 | ||
2169 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2170 | src_ip.proto = pg->key.addr.proto; |
e6231bca | 2171 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2172 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
e6231bca NA |
2173 | ent = br_multicast_find_group_src(pg, &src_ip); |
2174 | if (ent) { | |
2175 | ent->flags &= ~BR_SGRP_F_DELETE; | |
2176 | } else { | |
2177 | ent = br_multicast_new_group_src(pg, &src_ip); | |
2178 | if (ent) { | |
b0812368 | 2179 | __grp_src_mod_timer(ent, |
adc47037 | 2180 | now + br_multicast_gmi(brmctx)); |
e6231bca NA |
2181 | changed = true; |
2182 | } | |
2183 | } | |
e6231bca NA |
2184 | } |
2185 | ||
adc47037 NA |
2186 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2187 | grec_type)) | |
ddc255d9 NA |
2188 | changed = true; |
2189 | ||
e6231bca NA |
2190 | if (__grp_src_delete_marked(pg)) |
2191 | changed = true; | |
2192 | ||
2193 | return changed; | |
2194 | } | |
2195 | ||
adc47037 NA |
2196 | static bool br_multicast_isexc(const struct net_bridge_mcast *brmctx, |
2197 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2198 | void *srcs, u32 nsrcs, size_t addr_size, |
2199 | int grec_type) | |
e6231bca | 2200 | { |
e6231bca NA |
2201 | bool changed = false; |
2202 | ||
2203 | switch (pg->filter_mode) { | |
2204 | case MCAST_INCLUDE: | |
adc47037 | 2205 | __grp_src_isexc_incl(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
ddc255d9 | 2206 | grec_type); |
8266a049 | 2207 | br_multicast_star_g_handle_mode(pg, MCAST_EXCLUDE); |
e6231bca NA |
2208 | changed = true; |
2209 | break; | |
2210 | case MCAST_EXCLUDE: | |
adc47037 NA |
2211 | changed = __grp_src_isexc_excl(brmctx, pg, h_addr, srcs, nsrcs, |
2212 | addr_size, grec_type); | |
e6231bca NA |
2213 | break; |
2214 | } | |
2215 | ||
2216 | pg->filter_mode = MCAST_EXCLUDE; | |
adc47037 | 2217 | mod_timer(&pg->timer, jiffies + br_multicast_gmi(brmctx)); |
e6231bca NA |
2218 | |
2219 | return changed; | |
2220 | } | |
2221 | ||
5bf1e00b NA |
2222 | /* State Msg type New state Actions |
2223 | * INCLUDE (A) TO_IN (B) INCLUDE (A+B) (B)=GMI | |
2224 | * Send Q(G,A-B) | |
2225 | */ | |
adc47037 NA |
2226 | static bool __grp_src_toin_incl(struct net_bridge_mcast *brmctx, |
2227 | struct net_bridge_mcast_port *pmctx, | |
2228 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2229 | void *srcs, u32 nsrcs, size_t addr_size, |
2230 | int grec_type) | |
5bf1e00b | 2231 | { |
5bf1e00b NA |
2232 | u32 src_idx, to_send = pg->src_ents; |
2233 | struct net_bridge_group_src *ent; | |
2234 | unsigned long now = jiffies; | |
2235 | bool changed = false; | |
2236 | struct br_ip src_ip; | |
2237 | ||
2238 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2239 | ent->flags |= BR_SGRP_F_SEND; | |
2240 | ||
2241 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2242 | src_ip.proto = pg->key.addr.proto; |
5bf1e00b | 2243 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2244 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
5bf1e00b NA |
2245 | ent = br_multicast_find_group_src(pg, &src_ip); |
2246 | if (ent) { | |
2247 | ent->flags &= ~BR_SGRP_F_SEND; | |
2248 | to_send--; | |
2249 | } else { | |
2250 | ent = br_multicast_new_group_src(pg, &src_ip); | |
2251 | if (ent) | |
2252 | changed = true; | |
2253 | } | |
2254 | if (ent) | |
adc47037 | 2255 | __grp_src_mod_timer(ent, now + br_multicast_gmi(brmctx)); |
5bf1e00b NA |
2256 | } |
2257 | ||
adc47037 NA |
2258 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2259 | grec_type)) | |
ddc255d9 NA |
2260 | changed = true; |
2261 | ||
5bf1e00b | 2262 | if (to_send) |
adc47037 | 2263 | __grp_src_query_marked_and_rexmit(brmctx, pmctx, pg); |
5bf1e00b NA |
2264 | |
2265 | return changed; | |
2266 | } | |
2267 | ||
2268 | /* State Msg type New state Actions | |
2269 | * EXCLUDE (X,Y) TO_IN (A) EXCLUDE (X+A,Y-A) (A)=GMI | |
2270 | * Send Q(G,X-A) | |
2271 | * Send Q(G) | |
2272 | */ | |
adc47037 NA |
2273 | static bool __grp_src_toin_excl(struct net_bridge_mcast *brmctx, |
2274 | struct net_bridge_mcast_port *pmctx, | |
2275 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2276 | void *srcs, u32 nsrcs, size_t addr_size, |
2277 | int grec_type) | |
5bf1e00b | 2278 | { |
5bf1e00b NA |
2279 | u32 src_idx, to_send = pg->src_ents; |
2280 | struct net_bridge_group_src *ent; | |
2281 | unsigned long now = jiffies; | |
2282 | bool changed = false; | |
2283 | struct br_ip src_ip; | |
2284 | ||
2285 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2286 | if (timer_pending(&ent->timer)) | |
2287 | ent->flags |= BR_SGRP_F_SEND; | |
2288 | ||
2289 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2290 | src_ip.proto = pg->key.addr.proto; |
5bf1e00b | 2291 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2292 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
5bf1e00b NA |
2293 | ent = br_multicast_find_group_src(pg, &src_ip); |
2294 | if (ent) { | |
2295 | if (timer_pending(&ent->timer)) { | |
2296 | ent->flags &= ~BR_SGRP_F_SEND; | |
2297 | to_send--; | |
2298 | } | |
2299 | } else { | |
2300 | ent = br_multicast_new_group_src(pg, &src_ip); | |
2301 | if (ent) | |
2302 | changed = true; | |
2303 | } | |
2304 | if (ent) | |
adc47037 | 2305 | __grp_src_mod_timer(ent, now + br_multicast_gmi(brmctx)); |
5bf1e00b NA |
2306 | } |
2307 | ||
adc47037 NA |
2308 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2309 | grec_type)) | |
ddc255d9 NA |
2310 | changed = true; |
2311 | ||
5bf1e00b | 2312 | if (to_send) |
adc47037 | 2313 | __grp_src_query_marked_and_rexmit(brmctx, pmctx, pg); |
5bf1e00b | 2314 | |
adc47037 | 2315 | __grp_send_query_and_rexmit(brmctx, pmctx, pg); |
5bf1e00b NA |
2316 | |
2317 | return changed; | |
2318 | } | |
2319 | ||
adc47037 NA |
2320 | static bool br_multicast_toin(struct net_bridge_mcast *brmctx, |
2321 | struct net_bridge_mcast_port *pmctx, | |
2322 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2323 | void *srcs, u32 nsrcs, size_t addr_size, |
2324 | int grec_type) | |
5bf1e00b NA |
2325 | { |
2326 | bool changed = false; | |
2327 | ||
2328 | switch (pg->filter_mode) { | |
2329 | case MCAST_INCLUDE: | |
adc47037 NA |
2330 | changed = __grp_src_toin_incl(brmctx, pmctx, pg, h_addr, srcs, |
2331 | nsrcs, addr_size, grec_type); | |
5bf1e00b NA |
2332 | break; |
2333 | case MCAST_EXCLUDE: | |
adc47037 NA |
2334 | changed = __grp_src_toin_excl(brmctx, pmctx, pg, h_addr, srcs, |
2335 | nsrcs, addr_size, grec_type); | |
5bf1e00b NA |
2336 | break; |
2337 | } | |
2338 | ||
ddc255d9 | 2339 | if (br_multicast_eht_should_del_pg(pg)) { |
d5a10222 | 2340 | pg->flags |= MDB_PG_FLAGS_FAST_LEAVE; |
ddc255d9 NA |
2341 | br_multicast_find_del_pg(pg->key.port->br, pg); |
2342 | /* a notification has already been sent and we shouldn't | |
2343 | * access pg after the delete so we have to return false | |
2344 | */ | |
2345 | changed = false; | |
2346 | } | |
2347 | ||
5bf1e00b NA |
2348 | return changed; |
2349 | } | |
2350 | ||
2351 | /* State Msg type New state Actions | |
2352 | * INCLUDE (A) TO_EX (B) EXCLUDE (A*B,B-A) (B-A)=0 | |
2353 | * Delete (A-B) | |
2354 | * Send Q(G,A*B) | |
2355 | * Group Timer=GMI | |
2356 | */ | |
adc47037 NA |
2357 | static void __grp_src_toex_incl(struct net_bridge_mcast *brmctx, |
2358 | struct net_bridge_mcast_port *pmctx, | |
2359 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2360 | void *srcs, u32 nsrcs, size_t addr_size, |
2361 | int grec_type) | |
5bf1e00b NA |
2362 | { |
2363 | struct net_bridge_group_src *ent; | |
2364 | u32 src_idx, to_send = 0; | |
2365 | struct br_ip src_ip; | |
2366 | ||
2367 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2368 | ent->flags = (ent->flags & ~BR_SGRP_F_SEND) | BR_SGRP_F_DELETE; | |
2369 | ||
2370 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2371 | src_ip.proto = pg->key.addr.proto; |
5bf1e00b | 2372 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2373 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
5bf1e00b NA |
2374 | ent = br_multicast_find_group_src(pg, &src_ip); |
2375 | if (ent) { | |
2376 | ent->flags = (ent->flags & ~BR_SGRP_F_DELETE) | | |
2377 | BR_SGRP_F_SEND; | |
2378 | to_send++; | |
2379 | } else { | |
b0812368 | 2380 | ent = br_multicast_new_group_src(pg, &src_ip); |
5bf1e00b | 2381 | } |
b0812368 NA |
2382 | if (ent) |
2383 | br_multicast_fwd_src_handle(ent); | |
5bf1e00b NA |
2384 | } |
2385 | ||
adc47037 NA |
2386 | br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2387 | grec_type); | |
ddc255d9 | 2388 | |
5bf1e00b NA |
2389 | __grp_src_delete_marked(pg); |
2390 | if (to_send) | |
adc47037 | 2391 | __grp_src_query_marked_and_rexmit(brmctx, pmctx, pg); |
5bf1e00b NA |
2392 | } |
2393 | ||
2394 | /* State Msg type New state Actions | |
2395 | * EXCLUDE (X,Y) TO_EX (A) EXCLUDE (A-Y,Y*A) (A-X-Y)=Group Timer | |
2396 | * Delete (X-A) | |
2397 | * Delete (Y-A) | |
2398 | * Send Q(G,A-Y) | |
2399 | * Group Timer=GMI | |
2400 | */ | |
adc47037 NA |
2401 | static bool __grp_src_toex_excl(struct net_bridge_mcast *brmctx, |
2402 | struct net_bridge_mcast_port *pmctx, | |
2403 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2404 | void *srcs, u32 nsrcs, size_t addr_size, |
2405 | int grec_type) | |
5bf1e00b NA |
2406 | { |
2407 | struct net_bridge_group_src *ent; | |
2408 | u32 src_idx, to_send = 0; | |
2409 | bool changed = false; | |
2410 | struct br_ip src_ip; | |
2411 | ||
2412 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2413 | ent->flags = (ent->flags & ~BR_SGRP_F_SEND) | BR_SGRP_F_DELETE; | |
2414 | ||
2415 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2416 | src_ip.proto = pg->key.addr.proto; |
5bf1e00b | 2417 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2418 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
5bf1e00b NA |
2419 | ent = br_multicast_find_group_src(pg, &src_ip); |
2420 | if (ent) { | |
2421 | ent->flags &= ~BR_SGRP_F_DELETE; | |
2422 | } else { | |
2423 | ent = br_multicast_new_group_src(pg, &src_ip); | |
2424 | if (ent) { | |
b0812368 | 2425 | __grp_src_mod_timer(ent, pg->timer.expires); |
5bf1e00b NA |
2426 | changed = true; |
2427 | } | |
2428 | } | |
2429 | if (ent && timer_pending(&ent->timer)) { | |
2430 | ent->flags |= BR_SGRP_F_SEND; | |
2431 | to_send++; | |
2432 | } | |
5bf1e00b NA |
2433 | } |
2434 | ||
adc47037 NA |
2435 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2436 | grec_type)) | |
ddc255d9 NA |
2437 | changed = true; |
2438 | ||
5bf1e00b NA |
2439 | if (__grp_src_delete_marked(pg)) |
2440 | changed = true; | |
2441 | if (to_send) | |
adc47037 | 2442 | __grp_src_query_marked_and_rexmit(brmctx, pmctx, pg); |
5bf1e00b NA |
2443 | |
2444 | return changed; | |
2445 | } | |
2446 | ||
adc47037 NA |
2447 | static bool br_multicast_toex(struct net_bridge_mcast *brmctx, |
2448 | struct net_bridge_mcast_port *pmctx, | |
2449 | struct net_bridge_port_group *pg, void *h_addr, | |
ddc255d9 NA |
2450 | void *srcs, u32 nsrcs, size_t addr_size, |
2451 | int grec_type) | |
5bf1e00b | 2452 | { |
5bf1e00b NA |
2453 | bool changed = false; |
2454 | ||
2455 | switch (pg->filter_mode) { | |
2456 | case MCAST_INCLUDE: | |
adc47037 NA |
2457 | __grp_src_toex_incl(brmctx, pmctx, pg, h_addr, srcs, nsrcs, |
2458 | addr_size, grec_type); | |
8266a049 | 2459 | br_multicast_star_g_handle_mode(pg, MCAST_EXCLUDE); |
5bf1e00b NA |
2460 | changed = true; |
2461 | break; | |
2462 | case MCAST_EXCLUDE: | |
adc47037 NA |
2463 | changed = __grp_src_toex_excl(brmctx, pmctx, pg, h_addr, srcs, |
2464 | nsrcs, addr_size, grec_type); | |
5bf1e00b NA |
2465 | break; |
2466 | } | |
2467 | ||
2468 | pg->filter_mode = MCAST_EXCLUDE; | |
adc47037 | 2469 | mod_timer(&pg->timer, jiffies + br_multicast_gmi(brmctx)); |
5bf1e00b NA |
2470 | |
2471 | return changed; | |
2472 | } | |
2473 | ||
109865fe NA |
2474 | /* State Msg type New state Actions |
2475 | * INCLUDE (A) BLOCK (B) INCLUDE (A) Send Q(G,A*B) | |
2476 | */ | |
adc47037 NA |
2477 | static bool __grp_src_block_incl(struct net_bridge_mcast *brmctx, |
2478 | struct net_bridge_mcast_port *pmctx, | |
2479 | struct net_bridge_port_group *pg, void *h_addr, | |
474ddb37 | 2480 | void *srcs, u32 nsrcs, size_t addr_size, int grec_type) |
109865fe NA |
2481 | { |
2482 | struct net_bridge_group_src *ent; | |
2483 | u32 src_idx, to_send = 0; | |
0ad57c99 | 2484 | bool changed = false; |
109865fe NA |
2485 | struct br_ip src_ip; |
2486 | ||
2487 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2488 | ent->flags &= ~BR_SGRP_F_SEND; | |
2489 | ||
2490 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2491 | src_ip.proto = pg->key.addr.proto; |
109865fe | 2492 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2493 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
109865fe NA |
2494 | ent = br_multicast_find_group_src(pg, &src_ip); |
2495 | if (ent) { | |
2496 | ent->flags |= BR_SGRP_F_SEND; | |
2497 | to_send++; | |
2498 | } | |
109865fe NA |
2499 | } |
2500 | ||
adc47037 NA |
2501 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2502 | grec_type)) | |
474ddb37 NA |
2503 | changed = true; |
2504 | ||
109865fe | 2505 | if (to_send) |
adc47037 | 2506 | __grp_src_query_marked_and_rexmit(brmctx, pmctx, pg); |
109865fe | 2507 | |
0ad57c99 | 2508 | return changed; |
109865fe NA |
2509 | } |
2510 | ||
2511 | /* State Msg type New state Actions | |
2512 | * EXCLUDE (X,Y) BLOCK (A) EXCLUDE (X+(A-Y),Y) (A-X-Y)=Group Timer | |
2513 | * Send Q(G,A-Y) | |
2514 | */ | |
adc47037 NA |
2515 | static bool __grp_src_block_excl(struct net_bridge_mcast *brmctx, |
2516 | struct net_bridge_mcast_port *pmctx, | |
2517 | struct net_bridge_port_group *pg, void *h_addr, | |
474ddb37 | 2518 | void *srcs, u32 nsrcs, size_t addr_size, int grec_type) |
109865fe NA |
2519 | { |
2520 | struct net_bridge_group_src *ent; | |
2521 | u32 src_idx, to_send = 0; | |
2522 | bool changed = false; | |
2523 | struct br_ip src_ip; | |
2524 | ||
2525 | hlist_for_each_entry(ent, &pg->src_list, node) | |
2526 | ent->flags &= ~BR_SGRP_F_SEND; | |
2527 | ||
2528 | memset(&src_ip, 0, sizeof(src_ip)); | |
085b53c8 | 2529 | src_ip.proto = pg->key.addr.proto; |
109865fe | 2530 | for (src_idx = 0; src_idx < nsrcs; src_idx++) { |
e7cfcf2c | 2531 | memcpy(&src_ip.src, srcs + (src_idx * addr_size), addr_size); |
109865fe NA |
2532 | ent = br_multicast_find_group_src(pg, &src_ip); |
2533 | if (!ent) { | |
2534 | ent = br_multicast_new_group_src(pg, &src_ip); | |
2535 | if (ent) { | |
b0812368 | 2536 | __grp_src_mod_timer(ent, pg->timer.expires); |
109865fe NA |
2537 | changed = true; |
2538 | } | |
2539 | } | |
2540 | if (ent && timer_pending(&ent->timer)) { | |
2541 | ent->flags |= BR_SGRP_F_SEND; | |
2542 | to_send++; | |
2543 | } | |
109865fe NA |
2544 | } |
2545 | ||
adc47037 NA |
2546 | if (br_multicast_eht_handle(brmctx, pg, h_addr, srcs, nsrcs, addr_size, |
2547 | grec_type)) | |
474ddb37 NA |
2548 | changed = true; |
2549 | ||
109865fe | 2550 | if (to_send) |
adc47037 | 2551 | __grp_src_query_marked_and_rexmit(brmctx, pmctx, pg); |
109865fe NA |
2552 | |
2553 | return changed; | |
2554 | } | |
2555 | ||
adc47037 NA |
2556 | static bool br_multicast_block(struct net_bridge_mcast *brmctx, |
2557 | struct net_bridge_mcast_port *pmctx, | |
2558 | struct net_bridge_port_group *pg, void *h_addr, | |
474ddb37 | 2559 | void *srcs, u32 nsrcs, size_t addr_size, int grec_type) |
109865fe NA |
2560 | { |
2561 | bool changed = false; | |
2562 | ||
2563 | switch (pg->filter_mode) { | |
2564 | case MCAST_INCLUDE: | |
adc47037 NA |
2565 | changed = __grp_src_block_incl(brmctx, pmctx, pg, h_addr, srcs, |
2566 | nsrcs, addr_size, grec_type); | |
109865fe NA |
2567 | break; |
2568 | case MCAST_EXCLUDE: | |
adc47037 NA |
2569 | changed = __grp_src_block_excl(brmctx, pmctx, pg, h_addr, srcs, |
2570 | nsrcs, addr_size, grec_type); | |
109865fe NA |
2571 | break; |
2572 | } | |
2573 | ||
e87e4b5c NA |
2574 | if ((pg->filter_mode == MCAST_INCLUDE && hlist_empty(&pg->src_list)) || |
2575 | br_multicast_eht_should_del_pg(pg)) { | |
d5a10222 NA |
2576 | if (br_multicast_eht_should_del_pg(pg)) |
2577 | pg->flags |= MDB_PG_FLAGS_FAST_LEAVE; | |
e87e4b5c NA |
2578 | br_multicast_find_del_pg(pg->key.port->br, pg); |
2579 | /* a notification has already been sent and we shouldn't | |
2580 | * access pg after the delete so we have to return false | |
2581 | */ | |
2582 | changed = false; | |
2583 | } | |
2584 | ||
109865fe NA |
2585 | return changed; |
2586 | } | |
2587 | ||
0436862e NA |
2588 | static struct net_bridge_port_group * |
2589 | br_multicast_find_port(struct net_bridge_mdb_entry *mp, | |
2590 | struct net_bridge_port *p, | |
2591 | const unsigned char *src) | |
2592 | { | |
071445c6 | 2593 | struct net_bridge *br __maybe_unused = mp->br; |
0436862e | 2594 | struct net_bridge_port_group *pg; |
0436862e NA |
2595 | |
2596 | for (pg = mlock_dereference(mp->ports, br); | |
2597 | pg; | |
2598 | pg = mlock_dereference(pg->next, br)) | |
2599 | if (br_port_group_equal(pg, p, src)) | |
2600 | return pg; | |
2601 | ||
2602 | return NULL; | |
2603 | } | |
2604 | ||
adc47037 NA |
2605 | static int br_ip4_multicast_igmp3_report(struct net_bridge_mcast *brmctx, |
2606 | struct net_bridge_mcast_port *pmctx, | |
06499098 VY |
2607 | struct sk_buff *skb, |
2608 | u16 vid) | |
eb1d1641 | 2609 | { |
adc47037 | 2610 | bool igmpv2 = brmctx->multicast_igmp_version == 2; |
0436862e NA |
2611 | struct net_bridge_mdb_entry *mdst; |
2612 | struct net_bridge_port_group *pg; | |
6db6f0ea | 2613 | const unsigned char *src; |
eb1d1641 HX |
2614 | struct igmpv3_report *ih; |
2615 | struct igmpv3_grec *grec; | |
0436862e | 2616 | int i, len, num, type; |
54bea721 | 2617 | __be32 group, *h_addr; |
0436862e | 2618 | bool changed = false; |
0436862e | 2619 | int err = 0; |
e57f6185 | 2620 | u16 nsrcs; |
eb1d1641 | 2621 | |
eb1d1641 HX |
2622 | ih = igmpv3_report_hdr(skb); |
2623 | num = ntohs(ih->ngrec); | |
c2d4fbd2 | 2624 | len = skb_transport_offset(skb) + sizeof(*ih); |
eb1d1641 HX |
2625 | |
2626 | for (i = 0; i < num; i++) { | |
2627 | len += sizeof(*grec); | |
ba5ea614 | 2628 | if (!ip_mc_may_pull(skb, len)) |
eb1d1641 HX |
2629 | return -EINVAL; |
2630 | ||
fd218cf9 | 2631 | grec = (void *)(skb->data + len - sizeof(*grec)); |
eb1d1641 HX |
2632 | group = grec->grec_mca; |
2633 | type = grec->grec_type; | |
e57f6185 | 2634 | nsrcs = ntohs(grec->grec_nsrcs); |
eb1d1641 | 2635 | |
e57f6185 | 2636 | len += nsrcs * 4; |
ba5ea614 | 2637 | if (!ip_mc_may_pull(skb, len)) |
eb1d1641 HX |
2638 | return -EINVAL; |
2639 | ||
eb1d1641 HX |
2640 | switch (type) { |
2641 | case IGMPV3_MODE_IS_INCLUDE: | |
2642 | case IGMPV3_MODE_IS_EXCLUDE: | |
2643 | case IGMPV3_CHANGE_TO_INCLUDE: | |
2644 | case IGMPV3_CHANGE_TO_EXCLUDE: | |
2645 | case IGMPV3_ALLOW_NEW_SOURCES: | |
2646 | case IGMPV3_BLOCK_OLD_SOURCES: | |
2647 | break; | |
2648 | ||
2649 | default: | |
2650 | continue; | |
2651 | } | |
2652 | ||
6db6f0ea | 2653 | src = eth_hdr(skb)->h_source; |
0436862e NA |
2654 | if (nsrcs == 0 && |
2655 | (type == IGMPV3_CHANGE_TO_INCLUDE || | |
2656 | type == IGMPV3_MODE_IS_INCLUDE)) { | |
adc47037 NA |
2657 | if (!pmctx || igmpv2) { |
2658 | br_ip4_multicast_leave_group(brmctx, pmctx, | |
2659 | group, vid, src); | |
0436862e NA |
2660 | continue; |
2661 | } | |
bc8c20ac | 2662 | } else { |
adc47037 NA |
2663 | err = br_ip4_multicast_add_group(brmctx, pmctx, group, |
2664 | vid, src, igmpv2); | |
bc8c20ac SA |
2665 | if (err) |
2666 | break; | |
2667 | } | |
0436862e | 2668 | |
adc47037 | 2669 | if (!pmctx || igmpv2) |
0436862e NA |
2670 | continue; |
2671 | ||
262985fa | 2672 | spin_lock(&brmctx->br->multicast_lock); |
4cdd0d10 NA |
2673 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
2674 | goto unlock_continue; | |
2675 | ||
adc47037 | 2676 | mdst = br_mdb_ip4_get(brmctx->br, group, vid); |
0436862e NA |
2677 | if (!mdst) |
2678 | goto unlock_continue; | |
adc47037 | 2679 | pg = br_multicast_find_port(mdst, pmctx->port, src); |
0436862e NA |
2680 | if (!pg || (pg->flags & MDB_PG_FLAGS_PERMANENT)) |
2681 | goto unlock_continue; | |
54bea721 | 2682 | /* reload grec and host addr */ |
0436862e | 2683 | grec = (void *)(skb->data + len - sizeof(*grec) - (nsrcs * 4)); |
54bea721 | 2684 | h_addr = &ip_hdr(skb)->saddr; |
0436862e NA |
2685 | switch (type) { |
2686 | case IGMPV3_ALLOW_NEW_SOURCES: | |
adc47037 NA |
2687 | changed = br_multicast_isinc_allow(brmctx, pg, h_addr, |
2688 | grec->grec_src, | |
474ddb37 | 2689 | nsrcs, sizeof(__be32), type); |
0436862e | 2690 | break; |
e6231bca | 2691 | case IGMPV3_MODE_IS_INCLUDE: |
adc47037 NA |
2692 | changed = br_multicast_isinc_allow(brmctx, pg, h_addr, |
2693 | grec->grec_src, | |
474ddb37 | 2694 | nsrcs, sizeof(__be32), type); |
e6231bca NA |
2695 | break; |
2696 | case IGMPV3_MODE_IS_EXCLUDE: | |
adc47037 NA |
2697 | changed = br_multicast_isexc(brmctx, pg, h_addr, |
2698 | grec->grec_src, | |
ddc255d9 | 2699 | nsrcs, sizeof(__be32), type); |
e6231bca | 2700 | break; |
5bf1e00b | 2701 | case IGMPV3_CHANGE_TO_INCLUDE: |
adc47037 NA |
2702 | changed = br_multicast_toin(brmctx, pmctx, pg, h_addr, |
2703 | grec->grec_src, | |
ddc255d9 | 2704 | nsrcs, sizeof(__be32), type); |
5bf1e00b NA |
2705 | break; |
2706 | case IGMPV3_CHANGE_TO_EXCLUDE: | |
adc47037 NA |
2707 | changed = br_multicast_toex(brmctx, pmctx, pg, h_addr, |
2708 | grec->grec_src, | |
ddc255d9 | 2709 | nsrcs, sizeof(__be32), type); |
5bf1e00b | 2710 | break; |
109865fe | 2711 | case IGMPV3_BLOCK_OLD_SOURCES: |
adc47037 NA |
2712 | changed = br_multicast_block(brmctx, pmctx, pg, h_addr, |
2713 | grec->grec_src, | |
474ddb37 | 2714 | nsrcs, sizeof(__be32), type); |
109865fe | 2715 | break; |
0436862e NA |
2716 | } |
2717 | if (changed) | |
adc47037 | 2718 | br_mdb_notify(brmctx->br->dev, mdst, pg, RTM_NEWMDB); |
0436862e | 2719 | unlock_continue: |
262985fa | 2720 | spin_unlock(&brmctx->br->multicast_lock); |
eb1d1641 HX |
2721 | } |
2722 | ||
2723 | return err; | |
2724 | } | |
2725 | ||
dfd56b8b | 2726 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
2727 | static int br_ip6_multicast_mld2_report(struct net_bridge_mcast *brmctx, |
2728 | struct net_bridge_mcast_port *pmctx, | |
06499098 VY |
2729 | struct sk_buff *skb, |
2730 | u16 vid) | |
08b202b6 | 2731 | { |
adc47037 | 2732 | bool mldv1 = brmctx->multicast_mld_version == 1; |
0436862e NA |
2733 | struct net_bridge_mdb_entry *mdst; |
2734 | struct net_bridge_port_group *pg; | |
ba5ea614 | 2735 | unsigned int nsrcs_offset; |
6baeb395 | 2736 | struct mld2_report *mld2r; |
6db6f0ea | 2737 | const unsigned char *src; |
54bea721 | 2738 | struct in6_addr *h_addr; |
08b202b6 | 2739 | struct mld2_grec *grec; |
ba5ea614 | 2740 | unsigned int grec_len; |
0436862e NA |
2741 | bool changed = false; |
2742 | int i, len, num; | |
08b202b6 YH |
2743 | int err = 0; |
2744 | ||
6baeb395 | 2745 | if (!ipv6_mc_may_pull(skb, sizeof(*mld2r))) |
08b202b6 YH |
2746 | return -EINVAL; |
2747 | ||
6baeb395 M |
2748 | mld2r = (struct mld2_report *)icmp6_hdr(skb); |
2749 | num = ntohs(mld2r->mld2r_ngrec); | |
2750 | len = skb_transport_offset(skb) + sizeof(*mld2r); | |
08b202b6 YH |
2751 | |
2752 | for (i = 0; i < num; i++) { | |
e57f6185 NA |
2753 | __be16 *_nsrcs, __nsrcs; |
2754 | u16 nsrcs; | |
08b202b6 | 2755 | |
ba5ea614 LL |
2756 | nsrcs_offset = len + offsetof(struct mld2_grec, grec_nsrcs); |
2757 | ||
2758 | if (skb_transport_offset(skb) + ipv6_transport_len(skb) < | |
5fc6266a | 2759 | nsrcs_offset + sizeof(__nsrcs)) |
ba5ea614 LL |
2760 | return -EINVAL; |
2761 | ||
e57f6185 NA |
2762 | _nsrcs = skb_header_pointer(skb, nsrcs_offset, |
2763 | sizeof(__nsrcs), &__nsrcs); | |
2764 | if (!_nsrcs) | |
08b202b6 YH |
2765 | return -EINVAL; |
2766 | ||
e57f6185 NA |
2767 | nsrcs = ntohs(*_nsrcs); |
2768 | grec_len = struct_size(grec, grec_src, nsrcs); | |
ba5ea614 LL |
2769 | |
2770 | if (!ipv6_mc_may_pull(skb, len + grec_len)) | |
08b202b6 YH |
2771 | return -EINVAL; |
2772 | ||
2773 | grec = (struct mld2_grec *)(skb->data + len); | |
ba5ea614 | 2774 | len += grec_len; |
08b202b6 | 2775 | |
08b202b6 YH |
2776 | switch (grec->grec_type) { |
2777 | case MLD2_MODE_IS_INCLUDE: | |
2778 | case MLD2_MODE_IS_EXCLUDE: | |
2779 | case MLD2_CHANGE_TO_INCLUDE: | |
2780 | case MLD2_CHANGE_TO_EXCLUDE: | |
2781 | case MLD2_ALLOW_NEW_SOURCES: | |
2782 | case MLD2_BLOCK_OLD_SOURCES: | |
2783 | break; | |
2784 | ||
2785 | default: | |
2786 | continue; | |
2787 | } | |
2788 | ||
6db6f0ea | 2789 | src = eth_hdr(skb)->h_source; |
bc8c20ac SA |
2790 | if ((grec->grec_type == MLD2_CHANGE_TO_INCLUDE || |
2791 | grec->grec_type == MLD2_MODE_IS_INCLUDE) && | |
e57f6185 | 2792 | nsrcs == 0) { |
adc47037 NA |
2793 | if (!pmctx || mldv1) { |
2794 | br_ip6_multicast_leave_group(brmctx, pmctx, | |
0436862e NA |
2795 | &grec->grec_mca, |
2796 | vid, src); | |
2797 | continue; | |
2798 | } | |
bc8c20ac | 2799 | } else { |
adc47037 | 2800 | err = br_ip6_multicast_add_group(brmctx, pmctx, |
6db6f0ea | 2801 | &grec->grec_mca, vid, |
0436862e | 2802 | src, mldv1); |
9264251e | 2803 | if (err) |
bc8c20ac SA |
2804 | break; |
2805 | } | |
0436862e | 2806 | |
adc47037 | 2807 | if (!pmctx || mldv1) |
0436862e NA |
2808 | continue; |
2809 | ||
262985fa | 2810 | spin_lock(&brmctx->br->multicast_lock); |
4cdd0d10 NA |
2811 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
2812 | goto unlock_continue; | |
2813 | ||
adc47037 | 2814 | mdst = br_mdb_ip6_get(brmctx->br, &grec->grec_mca, vid); |
0436862e NA |
2815 | if (!mdst) |
2816 | goto unlock_continue; | |
adc47037 | 2817 | pg = br_multicast_find_port(mdst, pmctx->port, src); |
0436862e NA |
2818 | if (!pg || (pg->flags & MDB_PG_FLAGS_PERMANENT)) |
2819 | goto unlock_continue; | |
54bea721 | 2820 | h_addr = &ipv6_hdr(skb)->saddr; |
0436862e NA |
2821 | switch (grec->grec_type) { |
2822 | case MLD2_ALLOW_NEW_SOURCES: | |
adc47037 | 2823 | changed = br_multicast_isinc_allow(brmctx, pg, h_addr, |
54bea721 | 2824 | grec->grec_src, nsrcs, |
474ddb37 NA |
2825 | sizeof(struct in6_addr), |
2826 | grec->grec_type); | |
0436862e | 2827 | break; |
e6231bca | 2828 | case MLD2_MODE_IS_INCLUDE: |
adc47037 | 2829 | changed = br_multicast_isinc_allow(brmctx, pg, h_addr, |
54bea721 | 2830 | grec->grec_src, nsrcs, |
474ddb37 NA |
2831 | sizeof(struct in6_addr), |
2832 | grec->grec_type); | |
e6231bca NA |
2833 | break; |
2834 | case MLD2_MODE_IS_EXCLUDE: | |
adc47037 | 2835 | changed = br_multicast_isexc(brmctx, pg, h_addr, |
54bea721 | 2836 | grec->grec_src, nsrcs, |
ddc255d9 NA |
2837 | sizeof(struct in6_addr), |
2838 | grec->grec_type); | |
e6231bca | 2839 | break; |
5bf1e00b | 2840 | case MLD2_CHANGE_TO_INCLUDE: |
adc47037 | 2841 | changed = br_multicast_toin(brmctx, pmctx, pg, h_addr, |
54bea721 | 2842 | grec->grec_src, nsrcs, |
ddc255d9 NA |
2843 | sizeof(struct in6_addr), |
2844 | grec->grec_type); | |
5bf1e00b NA |
2845 | break; |
2846 | case MLD2_CHANGE_TO_EXCLUDE: | |
adc47037 | 2847 | changed = br_multicast_toex(brmctx, pmctx, pg, h_addr, |
54bea721 | 2848 | grec->grec_src, nsrcs, |
ddc255d9 NA |
2849 | sizeof(struct in6_addr), |
2850 | grec->grec_type); | |
5bf1e00b | 2851 | break; |
109865fe | 2852 | case MLD2_BLOCK_OLD_SOURCES: |
adc47037 | 2853 | changed = br_multicast_block(brmctx, pmctx, pg, h_addr, |
54bea721 | 2854 | grec->grec_src, nsrcs, |
474ddb37 NA |
2855 | sizeof(struct in6_addr), |
2856 | grec->grec_type); | |
109865fe | 2857 | break; |
0436862e NA |
2858 | } |
2859 | if (changed) | |
adc47037 | 2860 | br_mdb_notify(brmctx->br->dev, mdst, pg, RTM_NEWMDB); |
0436862e | 2861 | unlock_continue: |
262985fa | 2862 | spin_unlock(&brmctx->br->multicast_lock); |
08b202b6 YH |
2863 | } |
2864 | ||
2865 | return err; | |
2866 | } | |
2867 | #endif | |
2868 | ||
c3fb3698 NA |
2869 | static bool br_multicast_select_querier(struct net_bridge_mcast *brmctx, |
2870 | struct net_bridge_mcast_port *pmctx, | |
2871 | struct br_ip *saddr) | |
dc4eb53a | 2872 | { |
67b746f9 | 2873 | int port_ifidx = pmctx ? pmctx->port->dev->ifindex : 0; |
c3fb3698 NA |
2874 | struct timer_list *own_timer, *other_timer; |
2875 | struct bridge_mcast_querier *querier; | |
54cb4319 | 2876 | |
c3fb3698 NA |
2877 | switch (saddr->proto) { |
2878 | case htons(ETH_P_IP): | |
2879 | querier = &brmctx->ip4_querier; | |
2880 | own_timer = &brmctx->ip4_own_query.timer; | |
2881 | other_timer = &brmctx->ip4_other_query.timer; | |
2882 | if (!querier->addr.src.ip4 || | |
2883 | ntohl(saddr->src.ip4) <= ntohl(querier->addr.src.ip4)) | |
2884 | goto update; | |
2885 | break; | |
dc4eb53a | 2886 | #if IS_ENABLED(CONFIG_IPV6) |
c3fb3698 NA |
2887 | case htons(ETH_P_IPV6): |
2888 | querier = &brmctx->ip6_querier; | |
2889 | own_timer = &brmctx->ip6_own_query.timer; | |
2890 | other_timer = &brmctx->ip6_other_query.timer; | |
2891 | if (ipv6_addr_cmp(&saddr->src.ip6, &querier->addr.src.ip6) <= 0) | |
2892 | goto update; | |
2893 | break; | |
2894 | #endif | |
2895 | default: | |
2896 | return false; | |
2897 | } | |
dc4eb53a | 2898 | |
c3fb3698 | 2899 | if (!timer_pending(own_timer) && !timer_pending(other_timer)) |
dc4eb53a LL |
2900 | goto update; |
2901 | ||
2902 | return false; | |
2903 | ||
2904 | update: | |
c3fb3698 | 2905 | br_multicast_update_querier(brmctx, querier, port_ifidx, saddr); |
2cd41431 | 2906 | |
dc4eb53a LL |
2907 | return true; |
2908 | } | |
dc4eb53a | 2909 | |
c7fa1d9b NA |
2910 | static struct net_bridge_port * |
2911 | __br_multicast_get_querier_port(struct net_bridge *br, | |
2912 | const struct bridge_mcast_querier *querier) | |
2913 | { | |
2914 | int port_ifidx = READ_ONCE(querier->port_ifidx); | |
2915 | struct net_bridge_port *p; | |
2916 | struct net_device *dev; | |
2917 | ||
2918 | if (port_ifidx == 0) | |
2919 | return NULL; | |
2920 | ||
2921 | dev = dev_get_by_index_rcu(dev_net(br->dev), port_ifidx); | |
2922 | if (!dev) | |
2923 | return NULL; | |
2924 | p = br_port_get_rtnl_rcu(dev); | |
2925 | if (!p || p->br != br) | |
2926 | return NULL; | |
2927 | ||
2928 | return p; | |
2929 | } | |
2930 | ||
2931 | size_t br_multicast_querier_state_size(void) | |
2932 | { | |
cdda378b | 2933 | return nla_total_size(0) + /* nest attribute */ |
c7fa1d9b NA |
2934 | nla_total_size(sizeof(__be32)) + /* BRIDGE_QUERIER_IP_ADDRESS */ |
2935 | nla_total_size(sizeof(int)) + /* BRIDGE_QUERIER_IP_PORT */ | |
175e6692 NA |
2936 | nla_total_size_64bit(sizeof(u64)) + /* BRIDGE_QUERIER_IP_OTHER_TIMER */ |
2937 | #if IS_ENABLED(CONFIG_IPV6) | |
2938 | nla_total_size(sizeof(struct in6_addr)) + /* BRIDGE_QUERIER_IPV6_ADDRESS */ | |
2939 | nla_total_size(sizeof(int)) + /* BRIDGE_QUERIER_IPV6_PORT */ | |
2940 | nla_total_size_64bit(sizeof(u64)) + /* BRIDGE_QUERIER_IPV6_OTHER_TIMER */ | |
2941 | #endif | |
2942 | 0; | |
c7fa1d9b NA |
2943 | } |
2944 | ||
2945 | /* protected by rtnl or rcu */ | |
2946 | int br_multicast_dump_querier_state(struct sk_buff *skb, | |
2947 | const struct net_bridge_mcast *brmctx, | |
2948 | int nest_attr) | |
2949 | { | |
2950 | struct bridge_mcast_querier querier = {}; | |
2951 | struct net_bridge_port *p; | |
2952 | struct nlattr *nest; | |
2953 | ||
f137b7d4 NA |
2954 | if (!br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED) || |
2955 | br_multicast_ctx_vlan_global_disabled(brmctx)) | |
2956 | return 0; | |
2957 | ||
c7fa1d9b NA |
2958 | nest = nla_nest_start(skb, nest_attr); |
2959 | if (!nest) | |
2960 | return -EMSGSIZE; | |
2961 | ||
2962 | rcu_read_lock(); | |
85b41082 NA |
2963 | if (!brmctx->multicast_querier && |
2964 | !timer_pending(&brmctx->ip4_other_query.timer)) | |
2965 | goto out_v6; | |
2966 | ||
c7fa1d9b NA |
2967 | br_multicast_read_querier(&brmctx->ip4_querier, &querier); |
2968 | if (nla_put_in_addr(skb, BRIDGE_QUERIER_IP_ADDRESS, | |
2969 | querier.addr.src.ip4)) { | |
2970 | rcu_read_unlock(); | |
2971 | goto out_err; | |
2972 | } | |
2973 | ||
2974 | p = __br_multicast_get_querier_port(brmctx->br, &querier); | |
2975 | if (timer_pending(&brmctx->ip4_other_query.timer) && | |
2976 | (nla_put_u64_64bit(skb, BRIDGE_QUERIER_IP_OTHER_TIMER, | |
2977 | br_timer_value(&brmctx->ip4_other_query.timer), | |
2978 | BRIDGE_QUERIER_PAD) || | |
2979 | (p && nla_put_u32(skb, BRIDGE_QUERIER_IP_PORT, p->dev->ifindex)))) { | |
2980 | rcu_read_unlock(); | |
2981 | goto out_err; | |
2982 | } | |
85b41082 NA |
2983 | |
2984 | out_v6: | |
2985 | #if IS_ENABLED(CONFIG_IPV6) | |
2986 | if (!brmctx->multicast_querier && | |
2987 | !timer_pending(&brmctx->ip6_other_query.timer)) | |
2988 | goto out; | |
2989 | ||
2990 | br_multicast_read_querier(&brmctx->ip6_querier, &querier); | |
2991 | if (nla_put_in6_addr(skb, BRIDGE_QUERIER_IPV6_ADDRESS, | |
2992 | &querier.addr.src.ip6)) { | |
2993 | rcu_read_unlock(); | |
2994 | goto out_err; | |
2995 | } | |
2996 | ||
2997 | p = __br_multicast_get_querier_port(brmctx->br, &querier); | |
2998 | if (timer_pending(&brmctx->ip6_other_query.timer) && | |
2999 | (nla_put_u64_64bit(skb, BRIDGE_QUERIER_IPV6_OTHER_TIMER, | |
3000 | br_timer_value(&brmctx->ip6_other_query.timer), | |
3001 | BRIDGE_QUERIER_PAD) || | |
3002 | (p && nla_put_u32(skb, BRIDGE_QUERIER_IPV6_PORT, | |
3003 | p->dev->ifindex)))) { | |
3004 | rcu_read_unlock(); | |
3005 | goto out_err; | |
3006 | } | |
3007 | out: | |
3008 | #endif | |
c7fa1d9b NA |
3009 | rcu_read_unlock(); |
3010 | nla_nest_end(skb, nest); | |
85b41082 NA |
3011 | if (!nla_len(nest)) |
3012 | nla_nest_cancel(skb, nest); | |
c7fa1d9b NA |
3013 | |
3014 | return 0; | |
3015 | ||
3016 | out_err: | |
3017 | nla_nest_cancel(skb, nest); | |
3018 | return -EMSGSIZE; | |
3019 | } | |
3020 | ||
cc0fdd80 | 3021 | static void |
adc47037 | 3022 | br_multicast_update_query_timer(struct net_bridge_mcast *brmctx, |
90010b36 LL |
3023 | struct bridge_mcast_other_query *query, |
3024 | unsigned long max_delay) | |
b00589af | 3025 | { |
90010b36 LL |
3026 | if (!timer_pending(&query->timer)) |
3027 | query->delay_time = jiffies + max_delay; | |
b00589af | 3028 | |
adc47037 | 3029 | mod_timer(&query->timer, jiffies + brmctx->multicast_querier_interval); |
b00589af LL |
3030 | } |
3031 | ||
6d549648 NF |
3032 | static void br_port_mc_router_state_change(struct net_bridge_port *p, |
3033 | bool is_mc_router) | |
3034 | { | |
3035 | struct switchdev_attr attr = { | |
3036 | .orig_dev = p->dev, | |
3037 | .id = SWITCHDEV_ATTR_ID_PORT_MROUTER, | |
3038 | .flags = SWITCHDEV_F_DEFER, | |
3039 | .u.mrouter = is_mc_router, | |
3040 | }; | |
3041 | ||
dcbdf135 | 3042 | switchdev_port_attr_set(p->dev, &attr, NULL); |
6d549648 NF |
3043 | } |
3044 | ||
d9b8c4d8 | 3045 | static struct net_bridge_port * |
d3d065c0 | 3046 | br_multicast_rport_from_node(struct net_bridge_mcast *brmctx, |
d9b8c4d8 LL |
3047 | struct hlist_head *mc_router_list, |
3048 | struct hlist_node *rlist) | |
3049 | { | |
9632233e NA |
3050 | struct net_bridge_mcast_port *pmctx; |
3051 | ||
a3c02e76 | 3052 | #if IS_ENABLED(CONFIG_IPV6) |
d3d065c0 | 3053 | if (mc_router_list == &brmctx->ip6_mc_router_list) |
9632233e NA |
3054 | pmctx = hlist_entry(rlist, struct net_bridge_mcast_port, |
3055 | ip6_rlist); | |
3056 | else | |
a3c02e76 | 3057 | #endif |
9632233e NA |
3058 | pmctx = hlist_entry(rlist, struct net_bridge_mcast_port, |
3059 | ip4_rlist); | |
3060 | ||
3061 | return pmctx->port; | |
d9b8c4d8 LL |
3062 | } |
3063 | ||
3064 | static struct hlist_node * | |
d3d065c0 | 3065 | br_multicast_get_rport_slot(struct net_bridge_mcast *brmctx, |
d9b8c4d8 LL |
3066 | struct net_bridge_port *port, |
3067 | struct hlist_head *mc_router_list) | |
3068 | ||
3069 | { | |
3070 | struct hlist_node *slot = NULL; | |
3071 | struct net_bridge_port *p; | |
3072 | struct hlist_node *rlist; | |
3073 | ||
3074 | hlist_for_each(rlist, mc_router_list) { | |
d3d065c0 | 3075 | p = br_multicast_rport_from_node(brmctx, mc_router_list, rlist); |
d9b8c4d8 LL |
3076 | |
3077 | if ((unsigned long)port >= (unsigned long)p) | |
3078 | break; | |
3079 | ||
3080 | slot = rlist; | |
3081 | } | |
3082 | ||
3083 | return slot; | |
3084 | } | |
3085 | ||
adc47037 | 3086 | static bool br_multicast_no_router_otherpf(struct net_bridge_mcast_port *pmctx, |
a3c02e76 LL |
3087 | struct hlist_node *rnode) |
3088 | { | |
3089 | #if IS_ENABLED(CONFIG_IPV6) | |
adc47037 NA |
3090 | if (rnode != &pmctx->ip6_rlist) |
3091 | return hlist_unhashed(&pmctx->ip6_rlist); | |
a3c02e76 | 3092 | else |
adc47037 | 3093 | return hlist_unhashed(&pmctx->ip4_rlist); |
a3c02e76 LL |
3094 | #else |
3095 | return true; | |
3096 | #endif | |
3097 | } | |
3098 | ||
d9b8c4d8 | 3099 | /* Add port to router_list |
7e80c124 | 3100 | * list is maintained ordered by pointer value |
3101 | * and locked by br->multicast_lock and RCU | |
3102 | */ | |
d3d065c0 | 3103 | static void br_multicast_add_router(struct net_bridge_mcast *brmctx, |
adc47037 | 3104 | struct net_bridge_mcast_port *pmctx, |
d9b8c4d8 LL |
3105 | struct hlist_node *rlist, |
3106 | struct hlist_head *mc_router_list) | |
0909e117 | 3107 | { |
d9b8c4d8 | 3108 | struct hlist_node *slot; |
dcdca2c4 | 3109 | |
d9b8c4d8 | 3110 | if (!hlist_unhashed(rlist)) |
1a040eac NA |
3111 | return; |
3112 | ||
adc47037 | 3113 | slot = br_multicast_get_rport_slot(brmctx, pmctx->port, mc_router_list); |
dcdca2c4 | 3114 | |
7e80c124 | 3115 | if (slot) |
d9b8c4d8 | 3116 | hlist_add_behind_rcu(rlist, slot); |
dcdca2c4 | 3117 | else |
d9b8c4d8 LL |
3118 | hlist_add_head_rcu(rlist, mc_router_list); |
3119 | ||
a3c02e76 LL |
3120 | /* For backwards compatibility for now, only notify if we |
3121 | * switched from no IPv4/IPv6 multicast router to a new | |
3122 | * IPv4 or IPv6 multicast router. | |
3123 | */ | |
adc47037 | 3124 | if (br_multicast_no_router_otherpf(pmctx, rlist)) { |
1e9ca456 | 3125 | br_rtr_notify(pmctx->port->br->dev, pmctx, RTM_NEWMDB); |
adc47037 | 3126 | br_port_mc_router_state_change(pmctx->port, true); |
a3c02e76 | 3127 | } |
0909e117 HX |
3128 | } |
3129 | ||
d9b8c4d8 LL |
3130 | /* Add port to router_list |
3131 | * list is maintained ordered by pointer value | |
3132 | * and locked by br->multicast_lock and RCU | |
3133 | */ | |
adc47037 NA |
3134 | static void br_ip4_multicast_add_router(struct net_bridge_mcast *brmctx, |
3135 | struct net_bridge_mcast_port *pmctx) | |
d9b8c4d8 | 3136 | { |
adc47037 NA |
3137 | br_multicast_add_router(brmctx, pmctx, &pmctx->ip4_rlist, |
3138 | &brmctx->ip4_mc_router_list); | |
d9b8c4d8 LL |
3139 | } |
3140 | ||
a3c02e76 LL |
3141 | /* Add port to router_list |
3142 | * list is maintained ordered by pointer value | |
3143 | * and locked by br->multicast_lock and RCU | |
3144 | */ | |
adc47037 NA |
3145 | static void br_ip6_multicast_add_router(struct net_bridge_mcast *brmctx, |
3146 | struct net_bridge_mcast_port *pmctx) | |
a3c02e76 LL |
3147 | { |
3148 | #if IS_ENABLED(CONFIG_IPV6) | |
adc47037 NA |
3149 | br_multicast_add_router(brmctx, pmctx, &pmctx->ip6_rlist, |
3150 | &brmctx->ip6_mc_router_list); | |
a3c02e76 LL |
3151 | #endif |
3152 | } | |
3153 | ||
adc47037 NA |
3154 | static void br_multicast_mark_router(struct net_bridge_mcast *brmctx, |
3155 | struct net_bridge_mcast_port *pmctx, | |
d9b8c4d8 LL |
3156 | struct timer_list *timer, |
3157 | struct hlist_node *rlist, | |
3158 | struct hlist_head *mc_router_list) | |
eb1d1641 HX |
3159 | { |
3160 | unsigned long now = jiffies; | |
eb1d1641 | 3161 | |
4cdd0d10 NA |
3162 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
3163 | return; | |
3164 | ||
adc47037 | 3165 | if (!pmctx) { |
d3d065c0 NA |
3166 | if (brmctx->multicast_router == MDB_RTR_TYPE_TEMP_QUERY) { |
3167 | if (!br_ip4_multicast_is_router(brmctx) && | |
3168 | !br_ip6_multicast_is_router(brmctx)) | |
adc47037 | 3169 | br_mc_router_state_change(brmctx->br, true); |
d3d065c0 | 3170 | mod_timer(timer, now + brmctx->multicast_querier_interval); |
77041420 | 3171 | } |
eb1d1641 HX |
3172 | return; |
3173 | } | |
3174 | ||
adc47037 NA |
3175 | if (pmctx->multicast_router == MDB_RTR_TYPE_DISABLED || |
3176 | pmctx->multicast_router == MDB_RTR_TYPE_PERM) | |
eb1d1641 HX |
3177 | return; |
3178 | ||
adc47037 | 3179 | br_multicast_add_router(brmctx, pmctx, rlist, mc_router_list); |
d3d065c0 | 3180 | mod_timer(timer, now + brmctx->multicast_querier_interval); |
d9b8c4d8 LL |
3181 | } |
3182 | ||
adc47037 NA |
3183 | static void br_ip4_multicast_mark_router(struct net_bridge_mcast *brmctx, |
3184 | struct net_bridge_mcast_port *pmctx) | |
d9b8c4d8 | 3185 | { |
adc47037 | 3186 | struct timer_list *timer = &brmctx->ip4_mc_router_timer; |
d9b8c4d8 LL |
3187 | struct hlist_node *rlist = NULL; |
3188 | ||
adc47037 NA |
3189 | if (pmctx) { |
3190 | timer = &pmctx->ip4_mc_router_timer; | |
3191 | rlist = &pmctx->ip4_rlist; | |
d9b8c4d8 | 3192 | } |
eb1d1641 | 3193 | |
adc47037 NA |
3194 | br_multicast_mark_router(brmctx, pmctx, timer, rlist, |
3195 | &brmctx->ip4_mc_router_list); | |
eb1d1641 HX |
3196 | } |
3197 | ||
adc47037 NA |
3198 | static void br_ip6_multicast_mark_router(struct net_bridge_mcast *brmctx, |
3199 | struct net_bridge_mcast_port *pmctx) | |
a3c02e76 LL |
3200 | { |
3201 | #if IS_ENABLED(CONFIG_IPV6) | |
adc47037 | 3202 | struct timer_list *timer = &brmctx->ip6_mc_router_timer; |
a3c02e76 LL |
3203 | struct hlist_node *rlist = NULL; |
3204 | ||
adc47037 NA |
3205 | if (pmctx) { |
3206 | timer = &pmctx->ip6_mc_router_timer; | |
3207 | rlist = &pmctx->ip6_rlist; | |
a3c02e76 LL |
3208 | } |
3209 | ||
adc47037 NA |
3210 | br_multicast_mark_router(brmctx, pmctx, timer, rlist, |
3211 | &brmctx->ip6_mc_router_list); | |
a3c02e76 LL |
3212 | #endif |
3213 | } | |
3214 | ||
b19232ef | 3215 | static void |
adc47037 NA |
3216 | br_ip4_multicast_query_received(struct net_bridge_mcast *brmctx, |
3217 | struct net_bridge_mcast_port *pmctx, | |
b19232ef LL |
3218 | struct bridge_mcast_other_query *query, |
3219 | struct br_ip *saddr, | |
3220 | unsigned long max_delay) | |
3221 | { | |
c3fb3698 | 3222 | if (!br_multicast_select_querier(brmctx, pmctx, saddr)) |
b19232ef LL |
3223 | return; |
3224 | ||
adc47037 NA |
3225 | br_multicast_update_query_timer(brmctx, query, max_delay); |
3226 | br_ip4_multicast_mark_router(brmctx, pmctx); | |
b19232ef LL |
3227 | } |
3228 | ||
3229 | #if IS_ENABLED(CONFIG_IPV6) | |
3230 | static void | |
adc47037 NA |
3231 | br_ip6_multicast_query_received(struct net_bridge_mcast *brmctx, |
3232 | struct net_bridge_mcast_port *pmctx, | |
b19232ef LL |
3233 | struct bridge_mcast_other_query *query, |
3234 | struct br_ip *saddr, | |
3235 | unsigned long max_delay) | |
eb1d1641 | 3236 | { |
c3fb3698 | 3237 | if (!br_multicast_select_querier(brmctx, pmctx, saddr)) |
eb1d1641 HX |
3238 | return; |
3239 | ||
adc47037 NA |
3240 | br_multicast_update_query_timer(brmctx, query, max_delay); |
3241 | br_ip6_multicast_mark_router(brmctx, pmctx); | |
eb1d1641 | 3242 | } |
b19232ef | 3243 | #endif |
eb1d1641 | 3244 | |
adc47037 NA |
3245 | static void br_ip4_multicast_query(struct net_bridge_mcast *brmctx, |
3246 | struct net_bridge_mcast_port *pmctx, | |
9c2e955c | 3247 | struct sk_buff *skb, |
3248 | u16 vid) | |
eb1d1641 | 3249 | { |
ba5ea614 | 3250 | unsigned int transport_len = ip_transport_len(skb); |
b71d1d42 | 3251 | const struct iphdr *iph = ip_hdr(skb); |
eb1d1641 HX |
3252 | struct igmphdr *ih = igmp_hdr(skb); |
3253 | struct net_bridge_mdb_entry *mp; | |
3254 | struct igmpv3_query *ih3; | |
3255 | struct net_bridge_port_group *p; | |
e8051688 | 3256 | struct net_bridge_port_group __rcu **pp; |
67b746f9 | 3257 | struct br_ip saddr = {}; |
eb1d1641 HX |
3258 | unsigned long max_delay; |
3259 | unsigned long now = jiffies; | |
3260 | __be32 group; | |
3261 | ||
adc47037 | 3262 | spin_lock(&brmctx->br->multicast_lock); |
4cdd0d10 | 3263 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
eb1d1641 HX |
3264 | goto out; |
3265 | ||
eb1d1641 HX |
3266 | group = ih->group; |
3267 | ||
ba5ea614 | 3268 | if (transport_len == sizeof(*ih)) { |
eb1d1641 HX |
3269 | max_delay = ih->code * (HZ / IGMP_TIMER_SCALE); |
3270 | ||
3271 | if (!max_delay) { | |
3272 | max_delay = 10 * HZ; | |
3273 | group = 0; | |
3274 | } | |
ba5ea614 | 3275 | } else if (transport_len >= sizeof(*ih3)) { |
eb1d1641 | 3276 | ih3 = igmpv3_query_hdr(skb); |
23550b83 | 3277 | if (ih3->nsrcs || |
d3d065c0 NA |
3278 | (brmctx->multicast_igmp_version == 3 && group && |
3279 | ih3->suppress)) | |
bec68ff1 | 3280 | goto out; |
eb1d1641 | 3281 | |
0ba8c9ec YH |
3282 | max_delay = ih3->code ? |
3283 | IGMPV3_MRC(ih3->code) * (HZ / IGMP_TIMER_SCALE) : 1; | |
9afd85c9 | 3284 | } else { |
9ed973cc LL |
3285 | goto out; |
3286 | } | |
3287 | ||
dc4eb53a LL |
3288 | if (!group) { |
3289 | saddr.proto = htons(ETH_P_IP); | |
deb96566 | 3290 | saddr.src.ip4 = iph->saddr; |
b00589af | 3291 | |
adc47037 | 3292 | br_ip4_multicast_query_received(brmctx, pmctx, |
d3d065c0 | 3293 | &brmctx->ip4_other_query, |
b19232ef | 3294 | &saddr, max_delay); |
eb1d1641 | 3295 | goto out; |
dc4eb53a | 3296 | } |
eb1d1641 | 3297 | |
adc47037 | 3298 | mp = br_mdb_ip4_get(brmctx->br, group, vid); |
eb1d1641 HX |
3299 | if (!mp) |
3300 | goto out; | |
3301 | ||
d3d065c0 | 3302 | max_delay *= brmctx->multicast_last_member_count; |
eb1d1641 | 3303 | |
ff0fd34e | 3304 | if (mp->host_joined && |
eb1d1641 HX |
3305 | (timer_pending(&mp->timer) ? |
3306 | time_after(mp->timer.expires, now + max_delay) : | |
3307 | try_to_del_timer_sync(&mp->timer) >= 0)) | |
3308 | mod_timer(&mp->timer, now + max_delay); | |
3309 | ||
e8051688 | 3310 | for (pp = &mp->ports; |
adc47037 | 3311 | (p = mlock_dereference(*pp, brmctx->br)) != NULL; |
e8051688 | 3312 | pp = &p->next) { |
eb1d1641 HX |
3313 | if (timer_pending(&p->timer) ? |
3314 | time_after(p->timer.expires, now + max_delay) : | |
23550b83 | 3315 | try_to_del_timer_sync(&p->timer) >= 0 && |
d3d065c0 | 3316 | (brmctx->multicast_igmp_version == 2 || |
23550b83 | 3317 | p->filter_mode == MCAST_EXCLUDE)) |
24f9cdcb | 3318 | mod_timer(&p->timer, now + max_delay); |
eb1d1641 HX |
3319 | } |
3320 | ||
3321 | out: | |
adc47037 | 3322 | spin_unlock(&brmctx->br->multicast_lock); |
eb1d1641 HX |
3323 | } |
3324 | ||
dfd56b8b | 3325 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
3326 | static int br_ip6_multicast_query(struct net_bridge_mcast *brmctx, |
3327 | struct net_bridge_mcast_port *pmctx, | |
06499098 VY |
3328 | struct sk_buff *skb, |
3329 | u16 vid) | |
08b202b6 | 3330 | { |
ba5ea614 | 3331 | unsigned int transport_len = ipv6_transport_len(skb); |
eca2a43b | 3332 | struct mld_msg *mld; |
08b202b6 YH |
3333 | struct net_bridge_mdb_entry *mp; |
3334 | struct mld2_query *mld2q; | |
e8051688 ED |
3335 | struct net_bridge_port_group *p; |
3336 | struct net_bridge_port_group __rcu **pp; | |
67b746f9 | 3337 | struct br_ip saddr = {}; |
08b202b6 YH |
3338 | unsigned long max_delay; |
3339 | unsigned long now = jiffies; | |
856ce5d0 | 3340 | unsigned int offset = skb_transport_offset(skb); |
b71d1d42 | 3341 | const struct in6_addr *group = NULL; |
9ed973cc | 3342 | bool is_general_query; |
08b202b6 YH |
3343 | int err = 0; |
3344 | ||
adc47037 | 3345 | spin_lock(&brmctx->br->multicast_lock); |
4cdd0d10 | 3346 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
08b202b6 YH |
3347 | goto out; |
3348 | ||
ba5ea614 | 3349 | if (transport_len == sizeof(*mld)) { |
856ce5d0 | 3350 | if (!pskb_may_pull(skb, offset + sizeof(*mld))) { |
08b202b6 YH |
3351 | err = -EINVAL; |
3352 | goto out; | |
3353 | } | |
3354 | mld = (struct mld_msg *) icmp6_hdr(skb); | |
4715213d | 3355 | max_delay = msecs_to_jiffies(ntohs(mld->mld_maxdelay)); |
08b202b6 YH |
3356 | if (max_delay) |
3357 | group = &mld->mld_mca; | |
248ba8ec | 3358 | } else { |
856ce5d0 | 3359 | if (!pskb_may_pull(skb, offset + sizeof(*mld2q))) { |
08b202b6 YH |
3360 | err = -EINVAL; |
3361 | goto out; | |
3362 | } | |
3363 | mld2q = (struct mld2_query *)icmp6_hdr(skb); | |
3364 | if (!mld2q->mld2q_nsrcs) | |
3365 | group = &mld2q->mld2q_mca; | |
d3d065c0 | 3366 | if (brmctx->multicast_mld_version == 2 && |
23550b83 NA |
3367 | !ipv6_addr_any(&mld2q->mld2q_mca) && |
3368 | mld2q->mld2q_suppress) | |
3369 | goto out; | |
e3f5b170 DB |
3370 | |
3371 | max_delay = max(msecs_to_jiffies(mldv2_mrc(mld2q)), 1UL); | |
08b202b6 YH |
3372 | } |
3373 | ||
9ed973cc LL |
3374 | is_general_query = group && ipv6_addr_any(group); |
3375 | ||
dc4eb53a LL |
3376 | if (is_general_query) { |
3377 | saddr.proto = htons(ETH_P_IPV6); | |
deb96566 | 3378 | saddr.src.ip6 = ipv6_hdr(skb)->saddr; |
b00589af | 3379 | |
adc47037 | 3380 | br_ip6_multicast_query_received(brmctx, pmctx, |
d3d065c0 | 3381 | &brmctx->ip6_other_query, |
b19232ef | 3382 | &saddr, max_delay); |
08b202b6 | 3383 | goto out; |
6c03ee8b LL |
3384 | } else if (!group) { |
3385 | goto out; | |
dc4eb53a | 3386 | } |
08b202b6 | 3387 | |
adc47037 | 3388 | mp = br_mdb_ip6_get(brmctx->br, group, vid); |
08b202b6 YH |
3389 | if (!mp) |
3390 | goto out; | |
3391 | ||
d3d065c0 | 3392 | max_delay *= brmctx->multicast_last_member_count; |
ff0fd34e | 3393 | if (mp->host_joined && |
08b202b6 YH |
3394 | (timer_pending(&mp->timer) ? |
3395 | time_after(mp->timer.expires, now + max_delay) : | |
3396 | try_to_del_timer_sync(&mp->timer) >= 0)) | |
3397 | mod_timer(&mp->timer, now + max_delay); | |
3398 | ||
e8051688 | 3399 | for (pp = &mp->ports; |
adc47037 | 3400 | (p = mlock_dereference(*pp, brmctx->br)) != NULL; |
e8051688 | 3401 | pp = &p->next) { |
08b202b6 YH |
3402 | if (timer_pending(&p->timer) ? |
3403 | time_after(p->timer.expires, now + max_delay) : | |
23550b83 | 3404 | try_to_del_timer_sync(&p->timer) >= 0 && |
d3d065c0 | 3405 | (brmctx->multicast_mld_version == 1 || |
23550b83 | 3406 | p->filter_mode == MCAST_EXCLUDE)) |
24f9cdcb | 3407 | mod_timer(&p->timer, now + max_delay); |
08b202b6 YH |
3408 | } |
3409 | ||
3410 | out: | |
adc47037 | 3411 | spin_unlock(&brmctx->br->multicast_lock); |
08b202b6 YH |
3412 | return err; |
3413 | } | |
3414 | #endif | |
3415 | ||
90010b36 | 3416 | static void |
adc47037 NA |
3417 | br_multicast_leave_group(struct net_bridge_mcast *brmctx, |
3418 | struct net_bridge_mcast_port *pmctx, | |
90010b36 LL |
3419 | struct br_ip *group, |
3420 | struct bridge_mcast_other_query *other_query, | |
6db6f0ea FF |
3421 | struct bridge_mcast_own_query *own_query, |
3422 | const unsigned char *src) | |
eb1d1641 | 3423 | { |
eb1d1641 HX |
3424 | struct net_bridge_mdb_entry *mp; |
3425 | struct net_bridge_port_group *p; | |
3426 | unsigned long now; | |
3427 | unsigned long time; | |
3428 | ||
adc47037 | 3429 | spin_lock(&brmctx->br->multicast_lock); |
4cdd0d10 | 3430 | if (!br_multicast_ctx_should_use(brmctx, pmctx)) |
eb1d1641 HX |
3431 | goto out; |
3432 | ||
adc47037 | 3433 | mp = br_mdb_ip_get(brmctx->br, group); |
eb1d1641 HX |
3434 | if (!mp) |
3435 | goto out; | |
3436 | ||
adc47037 | 3437 | if (pmctx && (pmctx->port->flags & BR_MULTICAST_FAST_LEAVE)) { |
544586f7 SA |
3438 | struct net_bridge_port_group __rcu **pp; |
3439 | ||
3440 | for (pp = &mp->ports; | |
adc47037 | 3441 | (p = mlock_dereference(*pp, brmctx->br)) != NULL; |
544586f7 | 3442 | pp = &p->next) { |
adc47037 | 3443 | if (!br_port_group_equal(p, pmctx->port, src)) |
544586f7 SA |
3444 | continue; |
3445 | ||
5c725b6b NA |
3446 | if (p->flags & MDB_PG_FLAGS_PERMANENT) |
3447 | break; | |
3448 | ||
681590bd NA |
3449 | p->flags |= MDB_PG_FLAGS_FAST_LEAVE; |
3450 | br_multicast_del_pg(mp, p, pp); | |
544586f7 SA |
3451 | } |
3452 | goto out; | |
3453 | } | |
3454 | ||
3455 | if (timer_pending(&other_query->timer)) | |
3456 | goto out; | |
3457 | ||
4d5b4e84 | 3458 | if (brmctx->multicast_querier) { |
adc47037 | 3459 | __br_multicast_send_query(brmctx, pmctx, NULL, NULL, &mp->addr, |
42c11ccf | 3460 | false, 0, NULL); |
6b7df111 | 3461 | |
d3d065c0 NA |
3462 | time = jiffies + brmctx->multicast_last_member_count * |
3463 | brmctx->multicast_last_member_interval; | |
cc0fdd80 | 3464 | |
90010b36 | 3465 | mod_timer(&own_query->timer, time); |
6b7df111 | 3466 | |
adc47037 | 3467 | for (p = mlock_dereference(mp->ports, brmctx->br); |
54cb4319 | 3468 | p != NULL && pmctx != NULL; |
adc47037 NA |
3469 | p = mlock_dereference(p->next, brmctx->br)) { |
3470 | if (!br_port_group_equal(p, pmctx->port, src)) | |
6b7df111 CW |
3471 | continue; |
3472 | ||
3473 | if (!hlist_unhashed(&p->mglist) && | |
3474 | (timer_pending(&p->timer) ? | |
3475 | time_after(p->timer.expires, time) : | |
3476 | try_to_del_timer_sync(&p->timer) >= 0)) { | |
3477 | mod_timer(&p->timer, time); | |
3478 | } | |
3479 | ||
3480 | break; | |
3481 | } | |
3482 | } | |
3483 | ||
eb1d1641 | 3484 | now = jiffies; |
d3d065c0 NA |
3485 | time = now + brmctx->multicast_last_member_count * |
3486 | brmctx->multicast_last_member_interval; | |
eb1d1641 | 3487 | |
adc47037 | 3488 | if (!pmctx) { |
ff0fd34e | 3489 | if (mp->host_joined && |
eb1d1641 HX |
3490 | (timer_pending(&mp->timer) ? |
3491 | time_after(mp->timer.expires, time) : | |
3492 | try_to_del_timer_sync(&mp->timer) >= 0)) { | |
3493 | mod_timer(&mp->timer, time); | |
eb1d1641 | 3494 | } |
454594f3 LL |
3495 | |
3496 | goto out; | |
3497 | } | |
3498 | ||
adc47037 | 3499 | for (p = mlock_dereference(mp->ports, brmctx->br); |
454594f3 | 3500 | p != NULL; |
adc47037 NA |
3501 | p = mlock_dereference(p->next, brmctx->br)) { |
3502 | if (p->key.port != pmctx->port) | |
454594f3 LL |
3503 | continue; |
3504 | ||
3505 | if (!hlist_unhashed(&p->mglist) && | |
3506 | (timer_pending(&p->timer) ? | |
3507 | time_after(p->timer.expires, time) : | |
3508 | try_to_del_timer_sync(&p->timer) >= 0)) { | |
3509 | mod_timer(&p->timer, time); | |
3510 | } | |
3511 | ||
3512 | break; | |
eb1d1641 | 3513 | } |
eb1d1641 | 3514 | out: |
adc47037 | 3515 | spin_unlock(&brmctx->br->multicast_lock); |
eb1d1641 HX |
3516 | } |
3517 | ||
adc47037 NA |
3518 | static void br_ip4_multicast_leave_group(struct net_bridge_mcast *brmctx, |
3519 | struct net_bridge_mcast_port *pmctx, | |
b0e9a30d | 3520 | __be32 group, |
6db6f0ea FF |
3521 | __u16 vid, |
3522 | const unsigned char *src) | |
8ef2a9a5 YH |
3523 | { |
3524 | struct br_ip br_group; | |
90010b36 | 3525 | struct bridge_mcast_own_query *own_query; |
8ef2a9a5 YH |
3526 | |
3527 | if (ipv4_is_local_multicast(group)) | |
3528 | return; | |
3529 | ||
adc47037 | 3530 | own_query = pmctx ? &pmctx->ip4_own_query : &brmctx->ip4_own_query; |
90010b36 | 3531 | |
1515a63f | 3532 | memset(&br_group, 0, sizeof(br_group)); |
eab3227b | 3533 | br_group.dst.ip4 = group; |
8ef2a9a5 | 3534 | br_group.proto = htons(ETH_P_IP); |
b0e9a30d | 3535 | br_group.vid = vid; |
8ef2a9a5 | 3536 | |
adc47037 NA |
3537 | br_multicast_leave_group(brmctx, pmctx, &br_group, |
3538 | &brmctx->ip4_other_query, | |
6db6f0ea | 3539 | own_query, src); |
8ef2a9a5 YH |
3540 | } |
3541 | ||
dfd56b8b | 3542 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
3543 | static void br_ip6_multicast_leave_group(struct net_bridge_mcast *brmctx, |
3544 | struct net_bridge_mcast_port *pmctx, | |
b0e9a30d | 3545 | const struct in6_addr *group, |
6db6f0ea FF |
3546 | __u16 vid, |
3547 | const unsigned char *src) | |
08b202b6 YH |
3548 | { |
3549 | struct br_ip br_group; | |
90010b36 | 3550 | struct bridge_mcast_own_query *own_query; |
08b202b6 | 3551 | |
3c3769e6 | 3552 | if (ipv6_addr_is_ll_all_nodes(group)) |
08b202b6 YH |
3553 | return; |
3554 | ||
adc47037 | 3555 | own_query = pmctx ? &pmctx->ip6_own_query : &brmctx->ip6_own_query; |
90010b36 | 3556 | |
1515a63f | 3557 | memset(&br_group, 0, sizeof(br_group)); |
eab3227b | 3558 | br_group.dst.ip6 = *group; |
08b202b6 | 3559 | br_group.proto = htons(ETH_P_IPV6); |
b0e9a30d | 3560 | br_group.vid = vid; |
08b202b6 | 3561 | |
adc47037 NA |
3562 | br_multicast_leave_group(brmctx, pmctx, &br_group, |
3563 | &brmctx->ip6_other_query, | |
6db6f0ea | 3564 | own_query, src); |
08b202b6 YH |
3565 | } |
3566 | #endif | |
8ef2a9a5 | 3567 | |
1080ab95 NA |
3568 | static void br_multicast_err_count(const struct net_bridge *br, |
3569 | const struct net_bridge_port *p, | |
3570 | __be16 proto) | |
3571 | { | |
3572 | struct bridge_mcast_stats __percpu *stats; | |
3573 | struct bridge_mcast_stats *pstats; | |
3574 | ||
675779ad | 3575 | if (!br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) |
1080ab95 NA |
3576 | return; |
3577 | ||
3578 | if (p) | |
3579 | stats = p->mcast_stats; | |
3580 | else | |
3581 | stats = br->mcast_stats; | |
3582 | if (WARN_ON(!stats)) | |
3583 | return; | |
3584 | ||
3585 | pstats = this_cpu_ptr(stats); | |
3586 | ||
3587 | u64_stats_update_begin(&pstats->syncp); | |
3588 | switch (proto) { | |
3589 | case htons(ETH_P_IP): | |
3590 | pstats->mstats.igmp_parse_errors++; | |
3591 | break; | |
3592 | #if IS_ENABLED(CONFIG_IPV6) | |
3593 | case htons(ETH_P_IPV6): | |
3594 | pstats->mstats.mld_parse_errors++; | |
3595 | break; | |
3596 | #endif | |
3597 | } | |
3598 | u64_stats_update_end(&pstats->syncp); | |
3599 | } | |
3600 | ||
adc47037 NA |
3601 | static void br_multicast_pim(struct net_bridge_mcast *brmctx, |
3602 | struct net_bridge_mcast_port *pmctx, | |
91b02d3d NA |
3603 | const struct sk_buff *skb) |
3604 | { | |
3605 | unsigned int offset = skb_transport_offset(skb); | |
3606 | struct pimhdr *pimhdr, _pimhdr; | |
3607 | ||
3608 | pimhdr = skb_header_pointer(skb, offset, sizeof(_pimhdr), &_pimhdr); | |
3609 | if (!pimhdr || pim_hdr_version(pimhdr) != PIM_VERSION || | |
3610 | pim_hdr_type(pimhdr) != PIM_TYPE_HELLO) | |
3611 | return; | |
3612 | ||
adc47037 NA |
3613 | spin_lock(&brmctx->br->multicast_lock); |
3614 | br_ip4_multicast_mark_router(brmctx, pmctx); | |
3615 | spin_unlock(&brmctx->br->multicast_lock); | |
91b02d3d NA |
3616 | } |
3617 | ||
adc47037 NA |
3618 | static int br_ip4_multicast_mrd_rcv(struct net_bridge_mcast *brmctx, |
3619 | struct net_bridge_mcast_port *pmctx, | |
4b3087c7 LL |
3620 | struct sk_buff *skb) |
3621 | { | |
3622 | if (ip_hdr(skb)->protocol != IPPROTO_IGMP || | |
3623 | igmp_hdr(skb)->type != IGMP_MRDISC_ADV) | |
3624 | return -ENOMSG; | |
3625 | ||
adc47037 NA |
3626 | spin_lock(&brmctx->br->multicast_lock); |
3627 | br_ip4_multicast_mark_router(brmctx, pmctx); | |
3628 | spin_unlock(&brmctx->br->multicast_lock); | |
4b3087c7 LL |
3629 | |
3630 | return 0; | |
3631 | } | |
3632 | ||
adc47037 NA |
3633 | static int br_multicast_ipv4_rcv(struct net_bridge_mcast *brmctx, |
3634 | struct net_bridge_mcast_port *pmctx, | |
06499098 VY |
3635 | struct sk_buff *skb, |
3636 | u16 vid) | |
eb1d1641 | 3637 | { |
adc47037 | 3638 | struct net_bridge_port *p = pmctx ? pmctx->port : NULL; |
6db6f0ea | 3639 | const unsigned char *src; |
eb1d1641 | 3640 | struct igmphdr *ih; |
eb1d1641 HX |
3641 | int err; |
3642 | ||
ba5ea614 | 3643 | err = ip_mc_check_igmp(skb); |
eb1d1641 | 3644 | |
9afd85c9 | 3645 | if (err == -ENOMSG) { |
91b02d3d | 3646 | if (!ipv4_is_local_multicast(ip_hdr(skb)->daddr)) { |
bd4265fe | 3647 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; |
91b02d3d NA |
3648 | } else if (pim_ipv4_all_pim_routers(ip_hdr(skb)->daddr)) { |
3649 | if (ip_hdr(skb)->protocol == IPPROTO_PIM) | |
adc47037 | 3650 | br_multicast_pim(brmctx, pmctx, skb); |
4b3087c7 | 3651 | } else if (ipv4_is_all_snoopers(ip_hdr(skb)->daddr)) { |
adc47037 | 3652 | br_ip4_multicast_mrd_rcv(brmctx, pmctx, skb); |
91b02d3d | 3653 | } |
4b3087c7 | 3654 | |
eb1d1641 | 3655 | return 0; |
9afd85c9 | 3656 | } else if (err < 0) { |
adc47037 | 3657 | br_multicast_err_count(brmctx->br, p, skb->protocol); |
9afd85c9 | 3658 | return err; |
bd4265fe | 3659 | } |
eb1d1641 | 3660 | |
9afd85c9 | 3661 | ih = igmp_hdr(skb); |
6db6f0ea | 3662 | src = eth_hdr(skb)->h_source; |
1080ab95 | 3663 | BR_INPUT_SKB_CB(skb)->igmp = ih->type; |
eb1d1641 HX |
3664 | |
3665 | switch (ih->type) { | |
3666 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
3667 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
62b2bcb4 | 3668 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; |
adc47037 NA |
3669 | err = br_ip4_multicast_add_group(brmctx, pmctx, ih->group, vid, |
3670 | src, true); | |
eb1d1641 HX |
3671 | break; |
3672 | case IGMPV3_HOST_MEMBERSHIP_REPORT: | |
adc47037 | 3673 | err = br_ip4_multicast_igmp3_report(brmctx, pmctx, skb, vid); |
eb1d1641 HX |
3674 | break; |
3675 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
adc47037 | 3676 | br_ip4_multicast_query(brmctx, pmctx, skb, vid); |
eb1d1641 HX |
3677 | break; |
3678 | case IGMP_HOST_LEAVE_MESSAGE: | |
adc47037 | 3679 | br_ip4_multicast_leave_group(brmctx, pmctx, ih->group, vid, src); |
eb1d1641 HX |
3680 | break; |
3681 | } | |
3682 | ||
adc47037 | 3683 | br_multicast_count(brmctx->br, p, skb, BR_INPUT_SKB_CB(skb)->igmp, |
1080ab95 NA |
3684 | BR_MCAST_DIR_RX); |
3685 | ||
eb1d1641 HX |
3686 | return err; |
3687 | } | |
3688 | ||
dfd56b8b | 3689 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 NA |
3690 | static void br_ip6_multicast_mrd_rcv(struct net_bridge_mcast *brmctx, |
3691 | struct net_bridge_mcast_port *pmctx, | |
99014088 | 3692 | struct sk_buff *skb) |
4b3087c7 | 3693 | { |
4b3087c7 | 3694 | if (icmp6_hdr(skb)->icmp6_type != ICMPV6_MRDISC_ADV) |
99014088 | 3695 | return; |
4b3087c7 | 3696 | |
adc47037 NA |
3697 | spin_lock(&brmctx->br->multicast_lock); |
3698 | br_ip6_multicast_mark_router(brmctx, pmctx); | |
3699 | spin_unlock(&brmctx->br->multicast_lock); | |
4b3087c7 LL |
3700 | } |
3701 | ||
adc47037 NA |
3702 | static int br_multicast_ipv6_rcv(struct net_bridge_mcast *brmctx, |
3703 | struct net_bridge_mcast_port *pmctx, | |
06499098 VY |
3704 | struct sk_buff *skb, |
3705 | u16 vid) | |
08b202b6 | 3706 | { |
adc47037 | 3707 | struct net_bridge_port *p = pmctx ? pmctx->port : NULL; |
6db6f0ea | 3708 | const unsigned char *src; |
9afd85c9 | 3709 | struct mld_msg *mld; |
08b202b6 YH |
3710 | int err; |
3711 | ||
ba5ea614 | 3712 | err = ipv6_mc_check_mld(skb); |
08b202b6 | 3713 | |
99014088 | 3714 | if (err == -ENOMSG || err == -ENODATA) { |
9afd85c9 LL |
3715 | if (!ipv6_addr_is_ll_all_nodes(&ipv6_hdr(skb)->daddr)) |
3716 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; | |
99014088 LL |
3717 | if (err == -ENODATA && |
3718 | ipv6_addr_is_all_snoopers(&ipv6_hdr(skb)->daddr)) | |
adc47037 | 3719 | br_ip6_multicast_mrd_rcv(brmctx, pmctx, skb); |
4b3087c7 | 3720 | |
08b202b6 | 3721 | return 0; |
9afd85c9 | 3722 | } else if (err < 0) { |
adc47037 | 3723 | br_multicast_err_count(brmctx->br, p, skb->protocol); |
9afd85c9 | 3724 | return err; |
08b202b6 YH |
3725 | } |
3726 | ||
9afd85c9 | 3727 | mld = (struct mld_msg *)skb_transport_header(skb); |
1080ab95 | 3728 | BR_INPUT_SKB_CB(skb)->igmp = mld->mld_type; |
08b202b6 | 3729 | |
9afd85c9 | 3730 | switch (mld->mld_type) { |
08b202b6 | 3731 | case ICMPV6_MGM_REPORT: |
6db6f0ea | 3732 | src = eth_hdr(skb)->h_source; |
fc2af6c7 | 3733 | BR_INPUT_SKB_CB(skb)->mrouters_only = 1; |
adc47037 NA |
3734 | err = br_ip6_multicast_add_group(brmctx, pmctx, &mld->mld_mca, |
3735 | vid, src, true); | |
08b202b6 | 3736 | break; |
08b202b6 | 3737 | case ICMPV6_MLD2_REPORT: |
adc47037 | 3738 | err = br_ip6_multicast_mld2_report(brmctx, pmctx, skb, vid); |
08b202b6 YH |
3739 | break; |
3740 | case ICMPV6_MGM_QUERY: | |
adc47037 | 3741 | err = br_ip6_multicast_query(brmctx, pmctx, skb, vid); |
08b202b6 YH |
3742 | break; |
3743 | case ICMPV6_MGM_REDUCTION: | |
6db6f0ea | 3744 | src = eth_hdr(skb)->h_source; |
adc47037 NA |
3745 | br_ip6_multicast_leave_group(brmctx, pmctx, &mld->mld_mca, vid, |
3746 | src); | |
9afd85c9 | 3747 | break; |
08b202b6 YH |
3748 | } |
3749 | ||
adc47037 | 3750 | br_multicast_count(brmctx->br, p, skb, BR_INPUT_SKB_CB(skb)->igmp, |
1080ab95 NA |
3751 | BR_MCAST_DIR_RX); |
3752 | ||
08b202b6 YH |
3753 | return err; |
3754 | } | |
3755 | #endif | |
3756 | ||
f4b7002a NA |
3757 | int br_multicast_rcv(struct net_bridge_mcast **brmctx, |
3758 | struct net_bridge_mcast_port **pmctx, | |
3759 | struct net_bridge_vlan *vlan, | |
06499098 | 3760 | struct sk_buff *skb, u16 vid) |
eb1d1641 | 3761 | { |
1080ab95 NA |
3762 | int ret = 0; |
3763 | ||
1fafc7a9 YH |
3764 | BR_INPUT_SKB_CB(skb)->igmp = 0; |
3765 | BR_INPUT_SKB_CB(skb)->mrouters_only = 0; | |
3766 | ||
f4b7002a | 3767 | if (!br_opt_get((*brmctx)->br, BROPT_MULTICAST_ENABLED)) |
eb1d1641 HX |
3768 | return 0; |
3769 | ||
f4b7002a NA |
3770 | if (br_opt_get((*brmctx)->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && vlan) { |
3771 | const struct net_bridge_vlan *masterv; | |
3772 | ||
3773 | /* the vlan has the master flag set only when transmitting | |
3774 | * through the bridge device | |
3775 | */ | |
3776 | if (br_vlan_is_master(vlan)) { | |
3777 | masterv = vlan; | |
3778 | *brmctx = &vlan->br_mcast_ctx; | |
3779 | *pmctx = NULL; | |
3780 | } else { | |
3781 | masterv = vlan->brvlan; | |
3782 | *brmctx = &vlan->brvlan->br_mcast_ctx; | |
3783 | *pmctx = &vlan->port_mcast_ctx; | |
3784 | } | |
3785 | ||
3786 | if (!(masterv->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) | |
3787 | return 0; | |
3788 | } | |
3789 | ||
eb1d1641 HX |
3790 | switch (skb->protocol) { |
3791 | case htons(ETH_P_IP): | |
f4b7002a | 3792 | ret = br_multicast_ipv4_rcv(*brmctx, *pmctx, skb, vid); |
1080ab95 | 3793 | break; |
dfd56b8b | 3794 | #if IS_ENABLED(CONFIG_IPV6) |
08b202b6 | 3795 | case htons(ETH_P_IPV6): |
f4b7002a | 3796 | ret = br_multicast_ipv6_rcv(*brmctx, *pmctx, skb, vid); |
1080ab95 | 3797 | break; |
08b202b6 | 3798 | #endif |
eb1d1641 HX |
3799 | } |
3800 | ||
1080ab95 | 3801 | return ret; |
eb1d1641 HX |
3802 | } |
3803 | ||
adc47037 | 3804 | static void br_multicast_query_expired(struct net_bridge_mcast *brmctx, |
2cd41431 LL |
3805 | struct bridge_mcast_own_query *query, |
3806 | struct bridge_mcast_querier *querier) | |
cc0fdd80 | 3807 | { |
adc47037 | 3808 | spin_lock(&brmctx->br->multicast_lock); |
4cdd0d10 NA |
3809 | if (br_multicast_ctx_vlan_disabled(brmctx)) |
3810 | goto out; | |
3811 | ||
adc47037 | 3812 | if (query->startup_sent < brmctx->multicast_startup_query_count) |
cc0fdd80 LL |
3813 | query->startup_sent++; |
3814 | ||
adc47037 | 3815 | br_multicast_send_query(brmctx, NULL, query); |
4cdd0d10 | 3816 | out: |
adc47037 | 3817 | spin_unlock(&brmctx->br->multicast_lock); |
cc0fdd80 LL |
3818 | } |
3819 | ||
88c1f37f | 3820 | static void br_ip4_multicast_query_expired(struct timer_list *t) |
eb1d1641 | 3821 | { |
d3d065c0 NA |
3822 | struct net_bridge_mcast *brmctx = from_timer(brmctx, t, |
3823 | ip4_own_query.timer); | |
eb1d1641 | 3824 | |
adc47037 | 3825 | br_multicast_query_expired(brmctx, &brmctx->ip4_own_query, |
d3d065c0 | 3826 | &brmctx->ip4_querier); |
cc0fdd80 | 3827 | } |
eb1d1641 | 3828 | |
cc0fdd80 | 3829 | #if IS_ENABLED(CONFIG_IPV6) |
88c1f37f | 3830 | static void br_ip6_multicast_query_expired(struct timer_list *t) |
cc0fdd80 | 3831 | { |
d3d065c0 NA |
3832 | struct net_bridge_mcast *brmctx = from_timer(brmctx, t, |
3833 | ip6_own_query.timer); | |
eb1d1641 | 3834 | |
adc47037 | 3835 | br_multicast_query_expired(brmctx, &brmctx->ip6_own_query, |
d3d065c0 | 3836 | &brmctx->ip6_querier); |
eb1d1641 | 3837 | } |
cc0fdd80 | 3838 | #endif |
eb1d1641 | 3839 | |
e12cec65 | 3840 | static void br_multicast_gc_work(struct work_struct *work) |
8b671779 NA |
3841 | { |
3842 | struct net_bridge *br = container_of(work, struct net_bridge, | |
e12cec65 | 3843 | mcast_gc_work); |
8b671779 NA |
3844 | HLIST_HEAD(deleted_head); |
3845 | ||
3846 | spin_lock_bh(&br->multicast_lock); | |
e12cec65 | 3847 | hlist_move_list(&br->mcast_gc_list, &deleted_head); |
8b671779 NA |
3848 | spin_unlock_bh(&br->multicast_lock); |
3849 | ||
e12cec65 | 3850 | br_multicast_gc(&deleted_head); |
8b671779 NA |
3851 | } |
3852 | ||
613d61db NA |
3853 | void br_multicast_ctx_init(struct net_bridge *br, |
3854 | struct net_bridge_vlan *vlan, | |
3855 | struct net_bridge_mcast *brmctx) | |
eb1d1641 | 3856 | { |
613d61db NA |
3857 | brmctx->br = br; |
3858 | brmctx->vlan = vlan; | |
3859 | brmctx->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; | |
3860 | brmctx->multicast_last_member_count = 2; | |
3861 | brmctx->multicast_startup_query_count = 2; | |
eb1d1641 | 3862 | |
613d61db NA |
3863 | brmctx->multicast_last_member_interval = HZ; |
3864 | brmctx->multicast_query_response_interval = 10 * HZ; | |
3865 | brmctx->multicast_startup_query_interval = 125 * HZ / 4; | |
3866 | brmctx->multicast_query_interval = 125 * HZ; | |
3867 | brmctx->multicast_querier_interval = 255 * HZ; | |
3868 | brmctx->multicast_membership_interval = 260 * HZ; | |
3869 | ||
3870 | brmctx->ip4_other_query.delay_time = 0; | |
bb18ef8e | 3871 | brmctx->ip4_querier.port_ifidx = 0; |
f936bb42 | 3872 | seqcount_spinlock_init(&brmctx->ip4_querier.seq, &br->multicast_lock); |
613d61db | 3873 | brmctx->multicast_igmp_version = 2; |
cc0fdd80 | 3874 | #if IS_ENABLED(CONFIG_IPV6) |
613d61db NA |
3875 | brmctx->multicast_mld_version = 1; |
3876 | brmctx->ip6_other_query.delay_time = 0; | |
bb18ef8e | 3877 | brmctx->ip6_querier.port_ifidx = 0; |
f936bb42 | 3878 | seqcount_spinlock_init(&brmctx->ip6_querier.seq, &br->multicast_lock); |
cc0fdd80 | 3879 | #endif |
b00589af | 3880 | |
613d61db | 3881 | timer_setup(&brmctx->ip4_mc_router_timer, |
ee5fb222 | 3882 | br_ip4_multicast_local_router_expired, 0); |
613d61db | 3883 | timer_setup(&brmctx->ip4_other_query.timer, |
88c1f37f | 3884 | br_ip4_multicast_querier_expired, 0); |
613d61db | 3885 | timer_setup(&brmctx->ip4_own_query.timer, |
88c1f37f | 3886 | br_ip4_multicast_query_expired, 0); |
cc0fdd80 | 3887 | #if IS_ENABLED(CONFIG_IPV6) |
613d61db | 3888 | timer_setup(&brmctx->ip6_mc_router_timer, |
a3c02e76 | 3889 | br_ip6_multicast_local_router_expired, 0); |
613d61db | 3890 | timer_setup(&brmctx->ip6_other_query.timer, |
88c1f37f | 3891 | br_ip6_multicast_querier_expired, 0); |
613d61db | 3892 | timer_setup(&brmctx->ip6_own_query.timer, |
88c1f37f | 3893 | br_ip6_multicast_query_expired, 0); |
cc0fdd80 | 3894 | #endif |
613d61db NA |
3895 | } |
3896 | ||
3897 | void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx) | |
3898 | { | |
3899 | __br_multicast_stop(brmctx); | |
3900 | } | |
3901 | ||
3902 | void br_multicast_init(struct net_bridge *br) | |
3903 | { | |
3904 | br->hash_max = BR_MULTICAST_DEFAULT_HASH_MAX; | |
3905 | ||
3906 | br_multicast_ctx_init(br, NULL, &br->multicast_ctx); | |
3907 | ||
3908 | br_opt_toggle(br, BROPT_MULTICAST_ENABLED, true); | |
3909 | br_opt_toggle(br, BROPT_HAS_IPV6_ADDR, true); | |
3910 | ||
3911 | spin_lock_init(&br->multicast_lock); | |
19e3a9c9 | 3912 | INIT_HLIST_HEAD(&br->mdb_list); |
e12cec65 NA |
3913 | INIT_HLIST_HEAD(&br->mcast_gc_list); |
3914 | INIT_WORK(&br->mcast_gc_work, br_multicast_gc_work); | |
eb1d1641 HX |
3915 | } |
3916 | ||
4effd28c LL |
3917 | static void br_ip4_multicast_join_snoopers(struct net_bridge *br) |
3918 | { | |
3919 | struct in_device *in_dev = in_dev_get(br->dev); | |
3920 | ||
3921 | if (!in_dev) | |
3922 | return; | |
3923 | ||
9fb20801 | 3924 | __ip_mc_inc_group(in_dev, htonl(INADDR_ALLSNOOPERS_GROUP), GFP_ATOMIC); |
4effd28c LL |
3925 | in_dev_put(in_dev); |
3926 | } | |
3927 | ||
3928 | #if IS_ENABLED(CONFIG_IPV6) | |
3929 | static void br_ip6_multicast_join_snoopers(struct net_bridge *br) | |
3930 | { | |
3931 | struct in6_addr addr; | |
3932 | ||
3933 | ipv6_addr_set(&addr, htonl(0xff020000), 0, 0, htonl(0x6a)); | |
3934 | ipv6_dev_mc_inc(br->dev, &addr); | |
3935 | } | |
3936 | #else | |
3937 | static inline void br_ip6_multicast_join_snoopers(struct net_bridge *br) | |
3938 | { | |
3939 | } | |
3940 | #endif | |
3941 | ||
851d0a73 | 3942 | void br_multicast_join_snoopers(struct net_bridge *br) |
4effd28c LL |
3943 | { |
3944 | br_ip4_multicast_join_snoopers(br); | |
3945 | br_ip6_multicast_join_snoopers(br); | |
3946 | } | |
3947 | ||
3948 | static void br_ip4_multicast_leave_snoopers(struct net_bridge *br) | |
3949 | { | |
3950 | struct in_device *in_dev = in_dev_get(br->dev); | |
3951 | ||
3952 | if (WARN_ON(!in_dev)) | |
3953 | return; | |
3954 | ||
9fb20801 | 3955 | __ip_mc_dec_group(in_dev, htonl(INADDR_ALLSNOOPERS_GROUP), GFP_ATOMIC); |
4effd28c LL |
3956 | in_dev_put(in_dev); |
3957 | } | |
3958 | ||
3959 | #if IS_ENABLED(CONFIG_IPV6) | |
3960 | static void br_ip6_multicast_leave_snoopers(struct net_bridge *br) | |
3961 | { | |
3962 | struct in6_addr addr; | |
3963 | ||
3964 | ipv6_addr_set(&addr, htonl(0xff020000), 0, 0, htonl(0x6a)); | |
3965 | ipv6_dev_mc_dec(br->dev, &addr); | |
3966 | } | |
3967 | #else | |
3968 | static inline void br_ip6_multicast_leave_snoopers(struct net_bridge *br) | |
3969 | { | |
3970 | } | |
3971 | #endif | |
3972 | ||
851d0a73 | 3973 | void br_multicast_leave_snoopers(struct net_bridge *br) |
4effd28c LL |
3974 | { |
3975 | br_ip4_multicast_leave_snoopers(br); | |
3976 | br_ip6_multicast_leave_snoopers(br); | |
3977 | } | |
3978 | ||
7b54aaaf NA |
3979 | static void __br_multicast_open_query(struct net_bridge *br, |
3980 | struct bridge_mcast_own_query *query) | |
eb1d1641 | 3981 | { |
cc0fdd80 | 3982 | query->startup_sent = 0; |
eb1d1641 | 3983 | |
13cefad2 | 3984 | if (!br_opt_get(br, BROPT_MULTICAST_ENABLED)) |
eb1d1641 HX |
3985 | return; |
3986 | ||
cc0fdd80 LL |
3987 | mod_timer(&query->timer, jiffies); |
3988 | } | |
3989 | ||
7b54aaaf | 3990 | static void __br_multicast_open(struct net_bridge_mcast *brmctx) |
cc0fdd80 | 3991 | { |
7b54aaaf | 3992 | __br_multicast_open_query(brmctx->br, &brmctx->ip4_own_query); |
cc0fdd80 | 3993 | #if IS_ENABLED(CONFIG_IPV6) |
7b54aaaf | 3994 | __br_multicast_open_query(brmctx->br, &brmctx->ip6_own_query); |
cc0fdd80 | 3995 | #endif |
eb1d1641 HX |
3996 | } |
3997 | ||
7b54aaaf NA |
3998 | void br_multicast_open(struct net_bridge *br) |
3999 | { | |
7b54aaaf NA |
4000 | ASSERT_RTNL(); |
4001 | ||
f4b7002a NA |
4002 | if (br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) { |
4003 | struct net_bridge_vlan_group *vg; | |
4004 | struct net_bridge_vlan *vlan; | |
4005 | ||
4006 | vg = br_vlan_group(br); | |
4007 | if (vg) { | |
4008 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
4009 | struct net_bridge_mcast *brmctx; | |
4010 | ||
4011 | brmctx = &vlan->br_mcast_ctx; | |
4012 | if (br_vlan_is_brentry(vlan) && | |
4013 | !br_multicast_ctx_vlan_disabled(brmctx)) | |
4014 | __br_multicast_open(&vlan->br_mcast_ctx); | |
4015 | } | |
7b54aaaf | 4016 | } |
cb486ce9 NA |
4017 | } else { |
4018 | __br_multicast_open(&br->multicast_ctx); | |
7b54aaaf | 4019 | } |
7b54aaaf NA |
4020 | } |
4021 | ||
613d61db | 4022 | static void __br_multicast_stop(struct net_bridge_mcast *brmctx) |
eb1d1641 | 4023 | { |
613d61db NA |
4024 | del_timer_sync(&brmctx->ip4_mc_router_timer); |
4025 | del_timer_sync(&brmctx->ip4_other_query.timer); | |
4026 | del_timer_sync(&brmctx->ip4_own_query.timer); | |
cc0fdd80 | 4027 | #if IS_ENABLED(CONFIG_IPV6) |
613d61db NA |
4028 | del_timer_sync(&brmctx->ip6_mc_router_timer); |
4029 | del_timer_sync(&brmctx->ip6_other_query.timer); | |
4030 | del_timer_sync(&brmctx->ip6_own_query.timer); | |
cc0fdd80 | 4031 | #endif |
e10177ab SA |
4032 | } |
4033 | ||
7b54aaaf NA |
4034 | void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on) |
4035 | { | |
4036 | struct net_bridge *br; | |
4037 | ||
4038 | /* it's okay to check for the flag without the multicast lock because it | |
4039 | * can only change under RTNL -> multicast_lock, we need the latter to | |
4040 | * sync with timers and packets | |
4041 | */ | |
4042 | if (on == !!(vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED)) | |
4043 | return; | |
4044 | ||
4045 | if (br_vlan_is_master(vlan)) { | |
4046 | br = vlan->br; | |
4047 | ||
4048 | if (!br_vlan_is_brentry(vlan) || | |
4049 | (on && | |
4050 | br_multicast_ctx_vlan_global_disabled(&vlan->br_mcast_ctx))) | |
4051 | return; | |
4052 | ||
4053 | spin_lock_bh(&br->multicast_lock); | |
4054 | vlan->priv_flags ^= BR_VLFLAG_MCAST_ENABLED; | |
4055 | spin_unlock_bh(&br->multicast_lock); | |
4056 | ||
4057 | if (on) | |
4058 | __br_multicast_open(&vlan->br_mcast_ctx); | |
4059 | else | |
4060 | __br_multicast_stop(&vlan->br_mcast_ctx); | |
4061 | } else { | |
4062 | struct net_bridge_mcast *brmctx; | |
4063 | ||
4064 | brmctx = br_multicast_port_ctx_get_global(&vlan->port_mcast_ctx); | |
4065 | if (on && br_multicast_ctx_vlan_global_disabled(brmctx)) | |
4066 | return; | |
4067 | ||
4068 | br = vlan->port->br; | |
4069 | spin_lock_bh(&br->multicast_lock); | |
4070 | vlan->priv_flags ^= BR_VLFLAG_MCAST_ENABLED; | |
4071 | if (on) | |
4072 | __br_multicast_enable_port_ctx(&vlan->port_mcast_ctx); | |
4073 | else | |
4074 | __br_multicast_disable_port_ctx(&vlan->port_mcast_ctx); | |
4075 | spin_unlock_bh(&br->multicast_lock); | |
4076 | } | |
4077 | } | |
4078 | ||
affce9a7 | 4079 | static void br_multicast_toggle_vlan(struct net_bridge_vlan *vlan, bool on) |
f4b7002a NA |
4080 | { |
4081 | struct net_bridge_port *p; | |
4082 | ||
4083 | if (WARN_ON_ONCE(!br_vlan_is_master(vlan))) | |
4084 | return; | |
4085 | ||
4086 | list_for_each_entry(p, &vlan->br->port_list, list) { | |
4087 | struct net_bridge_vlan *vport; | |
4088 | ||
4089 | vport = br_vlan_find(nbp_vlan_group(p), vlan->vid); | |
4090 | if (!vport) | |
4091 | continue; | |
4092 | br_multicast_toggle_one_vlan(vport, on); | |
4093 | } | |
affce9a7 NA |
4094 | |
4095 | if (br_vlan_is_brentry(vlan)) | |
4096 | br_multicast_toggle_one_vlan(vlan, on); | |
f4b7002a NA |
4097 | } |
4098 | ||
4099 | int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on, | |
4100 | struct netlink_ext_ack *extack) | |
613d61db | 4101 | { |
7b54aaaf NA |
4102 | struct net_bridge_vlan_group *vg; |
4103 | struct net_bridge_vlan *vlan; | |
f4b7002a | 4104 | struct net_bridge_port *p; |
7b54aaaf | 4105 | |
f4b7002a NA |
4106 | if (br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) == on) |
4107 | return 0; | |
4108 | ||
4109 | if (on && !br_opt_get(br, BROPT_VLAN_ENABLED)) { | |
4110 | NL_SET_ERR_MSG_MOD(extack, "Cannot enable multicast vlan snooping with vlan filtering disabled"); | |
4111 | return -EINVAL; | |
4112 | } | |
7b54aaaf NA |
4113 | |
4114 | vg = br_vlan_group(br); | |
f4b7002a NA |
4115 | if (!vg) |
4116 | return 0; | |
4117 | ||
4118 | br_opt_toggle(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED, on); | |
4119 | ||
4120 | /* disable/enable non-vlan mcast contexts based on vlan snooping */ | |
4121 | if (on) | |
4122 | __br_multicast_stop(&br->multicast_ctx); | |
4123 | else | |
4124 | __br_multicast_open(&br->multicast_ctx); | |
4125 | list_for_each_entry(p, &br->port_list, list) { | |
4126 | if (on) | |
4127 | br_multicast_disable_port(p); | |
4128 | else | |
4129 | br_multicast_enable_port(p); | |
4130 | } | |
4131 | ||
4132 | list_for_each_entry(vlan, &vg->vlan_list, vlist) | |
4133 | br_multicast_toggle_vlan(vlan, on); | |
4134 | ||
4135 | return 0; | |
4136 | } | |
4137 | ||
9dee572c NA |
4138 | bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on) |
4139 | { | |
4140 | ASSERT_RTNL(); | |
4141 | ||
4142 | /* BR_VLFLAG_GLOBAL_MCAST_ENABLED relies on eventual consistency and | |
4143 | * requires only RTNL to change | |
4144 | */ | |
4145 | if (on == !!(vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)) | |
4146 | return false; | |
4147 | ||
4148 | vlan->priv_flags ^= BR_VLFLAG_GLOBAL_MCAST_ENABLED; | |
4149 | br_multicast_toggle_vlan(vlan, on); | |
4150 | ||
4151 | return true; | |
4152 | } | |
4153 | ||
f4b7002a NA |
4154 | void br_multicast_stop(struct net_bridge *br) |
4155 | { | |
4156 | ASSERT_RTNL(); | |
4157 | ||
4158 | if (br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) { | |
4159 | struct net_bridge_vlan_group *vg; | |
4160 | struct net_bridge_vlan *vlan; | |
4161 | ||
4162 | vg = br_vlan_group(br); | |
4163 | if (vg) { | |
4164 | list_for_each_entry(vlan, &vg->vlan_list, vlist) { | |
4165 | struct net_bridge_mcast *brmctx; | |
4166 | ||
4167 | brmctx = &vlan->br_mcast_ctx; | |
4168 | if (br_vlan_is_brentry(vlan) && | |
4169 | !br_multicast_ctx_vlan_disabled(brmctx)) | |
4170 | __br_multicast_stop(&vlan->br_mcast_ctx); | |
4171 | } | |
7b54aaaf | 4172 | } |
cb486ce9 NA |
4173 | } else { |
4174 | __br_multicast_stop(&br->multicast_ctx); | |
7b54aaaf | 4175 | } |
613d61db NA |
4176 | } |
4177 | ||
e10177ab SA |
4178 | void br_multicast_dev_del(struct net_bridge *br) |
4179 | { | |
e10177ab | 4180 | struct net_bridge_mdb_entry *mp; |
8b671779 | 4181 | HLIST_HEAD(deleted_head); |
19e3a9c9 | 4182 | struct hlist_node *tmp; |
eb1d1641 HX |
4183 | |
4184 | spin_lock_bh(&br->multicast_lock); | |
e12cec65 NA |
4185 | hlist_for_each_entry_safe(mp, tmp, &br->mdb_list, mdb_node) |
4186 | br_multicast_del_mdb_entry(mp); | |
4187 | hlist_move_list(&br->mcast_gc_list, &deleted_head); | |
eb1d1641 | 4188 | spin_unlock_bh(&br->multicast_lock); |
19e3a9c9 | 4189 | |
613d61db | 4190 | br_multicast_ctx_deinit(&br->multicast_ctx); |
e12cec65 NA |
4191 | br_multicast_gc(&deleted_head); |
4192 | cancel_work_sync(&br->mcast_gc_work); | |
8b671779 | 4193 | |
4329596c | 4194 | rcu_barrier(); |
eb1d1641 | 4195 | } |
0909e117 | 4196 | |
a97df080 | 4197 | int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val) |
0909e117 | 4198 | { |
6ae4ae8e | 4199 | int err = -EINVAL; |
0909e117 | 4200 | |
a97df080 | 4201 | spin_lock_bh(&brmctx->br->multicast_lock); |
0909e117 HX |
4202 | |
4203 | switch (val) { | |
7f0aec7a NA |
4204 | case MDB_RTR_TYPE_DISABLED: |
4205 | case MDB_RTR_TYPE_PERM: | |
a97df080 | 4206 | br_mc_router_state_change(brmctx->br, val == MDB_RTR_TYPE_PERM); |
d3d065c0 | 4207 | del_timer(&brmctx->ip4_mc_router_timer); |
a3c02e76 | 4208 | #if IS_ENABLED(CONFIG_IPV6) |
d3d065c0 | 4209 | del_timer(&brmctx->ip6_mc_router_timer); |
a3c02e76 | 4210 | #endif |
d3d065c0 | 4211 | brmctx->multicast_router = val; |
77041420 YG |
4212 | err = 0; |
4213 | break; | |
7f0aec7a | 4214 | case MDB_RTR_TYPE_TEMP_QUERY: |
d3d065c0 | 4215 | if (brmctx->multicast_router != MDB_RTR_TYPE_TEMP_QUERY) |
a97df080 | 4216 | br_mc_router_state_change(brmctx->br, false); |
d3d065c0 | 4217 | brmctx->multicast_router = val; |
0909e117 HX |
4218 | err = 0; |
4219 | break; | |
0909e117 HX |
4220 | } |
4221 | ||
a97df080 | 4222 | spin_unlock_bh(&brmctx->br->multicast_lock); |
0909e117 HX |
4223 | |
4224 | return err; | |
4225 | } | |
4226 | ||
ed2d3597 | 4227 | static void |
adc47037 | 4228 | br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted) |
7f0aec7a | 4229 | { |
ed2d3597 | 4230 | if (!deleted) |
7f0aec7a | 4231 | return; |
ed2d3597 | 4232 | |
a3c02e76 LL |
4233 | /* For backwards compatibility for now, only notify if there is |
4234 | * no multicast router anymore for both IPv4 and IPv6. | |
4235 | */ | |
adc47037 | 4236 | if (!hlist_unhashed(&pmctx->ip4_rlist)) |
a3c02e76 LL |
4237 | return; |
4238 | #if IS_ENABLED(CONFIG_IPV6) | |
adc47037 | 4239 | if (!hlist_unhashed(&pmctx->ip6_rlist)) |
a3c02e76 LL |
4240 | return; |
4241 | #endif | |
4242 | ||
1e9ca456 | 4243 | br_rtr_notify(pmctx->port->br->dev, pmctx, RTM_DELMDB); |
adc47037 | 4244 | br_port_mc_router_state_change(pmctx->port, false); |
f12e7d95 NF |
4245 | |
4246 | /* don't allow timer refresh */ | |
adc47037 NA |
4247 | if (pmctx->multicast_router == MDB_RTR_TYPE_TEMP) |
4248 | pmctx->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; | |
7f0aec7a NA |
4249 | } |
4250 | ||
a53581d5 NA |
4251 | int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx, |
4252 | unsigned long val) | |
0909e117 | 4253 | { |
a53581d5 | 4254 | struct net_bridge_mcast *brmctx; |
a55d8246 | 4255 | unsigned long now = jiffies; |
6ae4ae8e | 4256 | int err = -EINVAL; |
ed2d3597 | 4257 | bool del = false; |
0909e117 | 4258 | |
a53581d5 | 4259 | brmctx = br_multicast_port_ctx_get_global(pmctx); |
ddd0d529 | 4260 | spin_lock_bh(&brmctx->br->multicast_lock); |
adc47037 | 4261 | if (pmctx->multicast_router == val) { |
a55d8246 | 4262 | /* Refresh the temp router port timer */ |
adc47037 NA |
4263 | if (pmctx->multicast_router == MDB_RTR_TYPE_TEMP) { |
4264 | mod_timer(&pmctx->ip4_mc_router_timer, | |
d3d065c0 | 4265 | now + brmctx->multicast_querier_interval); |
a3c02e76 | 4266 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 | 4267 | mod_timer(&pmctx->ip6_mc_router_timer, |
d3d065c0 | 4268 | now + brmctx->multicast_querier_interval); |
a3c02e76 LL |
4269 | #endif |
4270 | } | |
4950cfd1 NA |
4271 | err = 0; |
4272 | goto unlock; | |
4273 | } | |
0909e117 | 4274 | switch (val) { |
7f0aec7a | 4275 | case MDB_RTR_TYPE_DISABLED: |
adc47037 NA |
4276 | pmctx->multicast_router = MDB_RTR_TYPE_DISABLED; |
4277 | del |= br_ip4_multicast_rport_del(pmctx); | |
4278 | del_timer(&pmctx->ip4_mc_router_timer); | |
4279 | del |= br_ip6_multicast_rport_del(pmctx); | |
a3c02e76 | 4280 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 | 4281 | del_timer(&pmctx->ip6_mc_router_timer); |
a3c02e76 | 4282 | #endif |
adc47037 | 4283 | br_multicast_rport_del_notify(pmctx, del); |
7f0aec7a NA |
4284 | break; |
4285 | case MDB_RTR_TYPE_TEMP_QUERY: | |
adc47037 NA |
4286 | pmctx->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; |
4287 | del |= br_ip4_multicast_rport_del(pmctx); | |
4288 | del |= br_ip6_multicast_rport_del(pmctx); | |
4289 | br_multicast_rport_del_notify(pmctx, del); | |
7f0aec7a NA |
4290 | break; |
4291 | case MDB_RTR_TYPE_PERM: | |
adc47037 NA |
4292 | pmctx->multicast_router = MDB_RTR_TYPE_PERM; |
4293 | del_timer(&pmctx->ip4_mc_router_timer); | |
4294 | br_ip4_multicast_add_router(brmctx, pmctx); | |
a3c02e76 | 4295 | #if IS_ENABLED(CONFIG_IPV6) |
adc47037 | 4296 | del_timer(&pmctx->ip6_mc_router_timer); |
a3c02e76 | 4297 | #endif |
adc47037 | 4298 | br_ip6_multicast_add_router(brmctx, pmctx); |
0909e117 | 4299 | break; |
a55d8246 | 4300 | case MDB_RTR_TYPE_TEMP: |
adc47037 NA |
4301 | pmctx->multicast_router = MDB_RTR_TYPE_TEMP; |
4302 | br_ip4_multicast_mark_router(brmctx, pmctx); | |
4303 | br_ip6_multicast_mark_router(brmctx, pmctx); | |
a55d8246 | 4304 | break; |
7f0aec7a NA |
4305 | default: |
4306 | goto unlock; | |
0909e117 | 4307 | } |
7f0aec7a NA |
4308 | err = 0; |
4309 | unlock: | |
ddd0d529 | 4310 | spin_unlock_bh(&brmctx->br->multicast_lock); |
0909e117 HX |
4311 | |
4312 | return err; | |
4313 | } | |
561f1103 | 4314 | |
2796d846 NA |
4315 | int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router) |
4316 | { | |
4317 | int err; | |
4318 | ||
4319 | if (br_vlan_is_master(v)) | |
4320 | err = br_multicast_set_router(&v->br_mcast_ctx, mcast_router); | |
4321 | else | |
4322 | err = br_multicast_set_port_router(&v->port_mcast_ctx, | |
4323 | mcast_router); | |
4324 | ||
4325 | return err; | |
4326 | } | |
4327 | ||
adc47037 | 4328 | static void br_multicast_start_querier(struct net_bridge_mcast *brmctx, |
90010b36 | 4329 | struct bridge_mcast_own_query *query) |
561f1103 HX |
4330 | { |
4331 | struct net_bridge_port *port; | |
74857216 | 4332 | |
cb486ce9 NA |
4333 | if (!br_multicast_ctx_matches_vlan_snooping(brmctx)) |
4334 | return; | |
4335 | ||
7b54aaaf | 4336 | __br_multicast_open_query(brmctx->br, query); |
74857216 | 4337 | |
c5b493ce | 4338 | rcu_read_lock(); |
adc47037 | 4339 | list_for_each_entry_rcu(port, &brmctx->br->port_list, list) { |
615cc23e NA |
4340 | struct bridge_mcast_own_query *ip4_own_query; |
4341 | #if IS_ENABLED(CONFIG_IPV6) | |
4342 | struct bridge_mcast_own_query *ip6_own_query; | |
4343 | #endif | |
4344 | ||
4345 | if (br_multicast_port_ctx_state_stopped(&port->multicast_ctx)) | |
74857216 HX |
4346 | continue; |
4347 | ||
615cc23e NA |
4348 | if (br_multicast_ctx_is_vlan(brmctx)) { |
4349 | struct net_bridge_vlan *vlan; | |
4350 | ||
3f0d14ef NA |
4351 | vlan = br_vlan_find(nbp_vlan_group_rcu(port), |
4352 | brmctx->vlan->vid); | |
615cc23e NA |
4353 | if (!vlan || |
4354 | br_multicast_port_ctx_state_stopped(&vlan->port_mcast_ctx)) | |
4355 | continue; | |
4356 | ||
4357 | ip4_own_query = &vlan->port_mcast_ctx.ip4_own_query; | |
4358 | #if IS_ENABLED(CONFIG_IPV6) | |
4359 | ip6_own_query = &vlan->port_mcast_ctx.ip6_own_query; | |
4360 | #endif | |
4361 | } else { | |
4362 | ip4_own_query = &port->multicast_ctx.ip4_own_query; | |
4363 | #if IS_ENABLED(CONFIG_IPV6) | |
4364 | ip6_own_query = &port->multicast_ctx.ip6_own_query; | |
4365 | #endif | |
4366 | } | |
4367 | ||
adc47037 | 4368 | if (query == &brmctx->ip4_own_query) |
615cc23e | 4369 | br_multicast_enable(ip4_own_query); |
cc0fdd80 LL |
4370 | #if IS_ENABLED(CONFIG_IPV6) |
4371 | else | |
615cc23e | 4372 | br_multicast_enable(ip6_own_query); |
cc0fdd80 | 4373 | #endif |
74857216 | 4374 | } |
c5b493ce | 4375 | rcu_read_unlock(); |
74857216 HX |
4376 | } |
4377 | ||
ae1ea84b FF |
4378 | int br_multicast_toggle(struct net_bridge *br, unsigned long val, |
4379 | struct netlink_ext_ack *extack) | |
74857216 | 4380 | { |
7cb3f921 | 4381 | struct net_bridge_port *port; |
851d0a73 | 4382 | bool change_snoopers = false; |
ae1ea84b | 4383 | int err = 0; |
561f1103 | 4384 | |
ef5e0d82 | 4385 | spin_lock_bh(&br->multicast_lock); |
13cefad2 | 4386 | if (!!br_opt_get(br, BROPT_MULTICAST_ENABLED) == !!val) |
561f1103 HX |
4387 | goto unlock; |
4388 | ||
ae1ea84b FF |
4389 | err = br_mc_disabled_update(br->dev, val, extack); |
4390 | if (err == -EOPNOTSUPP) | |
4391 | err = 0; | |
4392 | if (err) | |
4393 | goto unlock; | |
4394 | ||
13cefad2 | 4395 | br_opt_toggle(br, BROPT_MULTICAST_ENABLED, !!val); |
4effd28c | 4396 | if (!br_opt_get(br, BROPT_MULTICAST_ENABLED)) { |
851d0a73 | 4397 | change_snoopers = true; |
561f1103 | 4398 | goto unlock; |
4effd28c | 4399 | } |
561f1103 | 4400 | |
3a7fda06 HX |
4401 | if (!netif_running(br->dev)) |
4402 | goto unlock; | |
4403 | ||
7cb3f921 NA |
4404 | br_multicast_open(br); |
4405 | list_for_each_entry(port, &br->port_list, list) | |
adc47037 | 4406 | __br_multicast_enable_port_ctx(&port->multicast_ctx); |
561f1103 | 4407 | |
851d0a73 JH |
4408 | change_snoopers = true; |
4409 | ||
561f1103 | 4410 | unlock: |
ef5e0d82 | 4411 | spin_unlock_bh(&br->multicast_lock); |
561f1103 | 4412 | |
851d0a73 JH |
4413 | /* br_multicast_join_snoopers has the potential to cause |
4414 | * an MLD Report/Leave to be delivered to br_multicast_rcv, | |
4415 | * which would in turn call br_multicast_add_group, which would | |
4416 | * attempt to acquire multicast_lock. This function should be | |
4417 | * called after the lock has been released to avoid deadlocks on | |
4418 | * multicast_lock. | |
4419 | * | |
4420 | * br_multicast_leave_snoopers does not have the problem since | |
4421 | * br_multicast_rcv first checks BROPT_MULTICAST_ENABLED, and | |
4422 | * returns without calling br_multicast_ipv4/6_rcv if it's not | |
4423 | * enabled. Moved both functions out just for symmetry. | |
4424 | */ | |
4425 | if (change_snoopers) { | |
4426 | if (br_opt_get(br, BROPT_MULTICAST_ENABLED)) | |
4427 | br_multicast_join_snoopers(br); | |
4428 | else | |
4429 | br_multicast_leave_snoopers(br); | |
4430 | } | |
4431 | ||
ae1ea84b | 4432 | return err; |
561f1103 | 4433 | } |
b195167f | 4434 | |
9341b988 IS |
4435 | bool br_multicast_enabled(const struct net_device *dev) |
4436 | { | |
4437 | struct net_bridge *br = netdev_priv(dev); | |
4438 | ||
13cefad2 | 4439 | return !!br_opt_get(br, BROPT_MULTICAST_ENABLED); |
9341b988 IS |
4440 | } |
4441 | EXPORT_SYMBOL_GPL(br_multicast_enabled); | |
4442 | ||
0912bda4 YG |
4443 | bool br_multicast_router(const struct net_device *dev) |
4444 | { | |
4445 | struct net_bridge *br = netdev_priv(dev); | |
4446 | bool is_router; | |
4447 | ||
4448 | spin_lock_bh(&br->multicast_lock); | |
adc47037 | 4449 | is_router = br_multicast_is_router(&br->multicast_ctx, NULL); |
0912bda4 YG |
4450 | spin_unlock_bh(&br->multicast_lock); |
4451 | return is_router; | |
4452 | } | |
4453 | EXPORT_SYMBOL_GPL(br_multicast_router); | |
4454 | ||
62938182 | 4455 | int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val) |
c5c23260 | 4456 | { |
b00589af LL |
4457 | unsigned long max_delay; |
4458 | ||
c5c23260 HX |
4459 | val = !!val; |
4460 | ||
62938182 | 4461 | spin_lock_bh(&brmctx->br->multicast_lock); |
4d5b4e84 | 4462 | if (brmctx->multicast_querier == val) |
c5c23260 HX |
4463 | goto unlock; |
4464 | ||
4d5b4e84 | 4465 | WRITE_ONCE(brmctx->multicast_querier, val); |
b00589af LL |
4466 | if (!val) |
4467 | goto unlock; | |
4468 | ||
d3d065c0 | 4469 | max_delay = brmctx->multicast_query_response_interval; |
b00589af | 4470 | |
d3d065c0 NA |
4471 | if (!timer_pending(&brmctx->ip4_other_query.timer)) |
4472 | brmctx->ip4_other_query.delay_time = jiffies + max_delay; | |
cc0fdd80 | 4473 | |
adc47037 | 4474 | br_multicast_start_querier(brmctx, &brmctx->ip4_own_query); |
cc0fdd80 LL |
4475 | |
4476 | #if IS_ENABLED(CONFIG_IPV6) | |
d3d065c0 NA |
4477 | if (!timer_pending(&brmctx->ip6_other_query.timer)) |
4478 | brmctx->ip6_other_query.delay_time = jiffies + max_delay; | |
cc0fdd80 | 4479 | |
adc47037 | 4480 | br_multicast_start_querier(brmctx, &brmctx->ip6_own_query); |
cc0fdd80 | 4481 | #endif |
c5c23260 HX |
4482 | |
4483 | unlock: | |
62938182 | 4484 | spin_unlock_bh(&brmctx->br->multicast_lock); |
c5c23260 HX |
4485 | |
4486 | return 0; | |
4487 | } | |
4488 | ||
df271cd6 NA |
4489 | int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx, |
4490 | unsigned long val) | |
5e923585 NA |
4491 | { |
4492 | /* Currently we support only version 2 and 3 */ | |
4493 | switch (val) { | |
4494 | case 2: | |
4495 | case 3: | |
4496 | break; | |
4497 | default: | |
4498 | return -EINVAL; | |
4499 | } | |
4500 | ||
df271cd6 NA |
4501 | spin_lock_bh(&brmctx->br->multicast_lock); |
4502 | brmctx->multicast_igmp_version = val; | |
4503 | spin_unlock_bh(&brmctx->br->multicast_lock); | |
5e923585 NA |
4504 | |
4505 | return 0; | |
4506 | } | |
4507 | ||
aa2ae3e7 | 4508 | #if IS_ENABLED(CONFIG_IPV6) |
df271cd6 NA |
4509 | int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx, |
4510 | unsigned long val) | |
aa2ae3e7 NA |
4511 | { |
4512 | /* Currently we support version 1 and 2 */ | |
4513 | switch (val) { | |
4514 | case 1: | |
4515 | case 2: | |
4516 | break; | |
4517 | default: | |
4518 | return -EINVAL; | |
4519 | } | |
4520 | ||
df271cd6 NA |
4521 | spin_lock_bh(&brmctx->br->multicast_lock); |
4522 | brmctx->multicast_mld_version = val; | |
4523 | spin_unlock_bh(&brmctx->br->multicast_lock); | |
aa2ae3e7 NA |
4524 | |
4525 | return 0; | |
4526 | } | |
4527 | #endif | |
4528 | ||
99b40610 NA |
4529 | void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx, |
4530 | unsigned long val) | |
4531 | { | |
4532 | unsigned long intvl_jiffies = clock_t_to_jiffies(val); | |
4533 | ||
4534 | if (intvl_jiffies < BR_MULTICAST_QUERY_INTVL_MIN) { | |
4535 | br_info(brmctx->br, | |
4536 | "trying to set multicast query interval below minimum, setting to %lu (%ums)\n", | |
4537 | jiffies_to_clock_t(BR_MULTICAST_QUERY_INTVL_MIN), | |
4538 | jiffies_to_msecs(BR_MULTICAST_QUERY_INTVL_MIN)); | |
4539 | intvl_jiffies = BR_MULTICAST_QUERY_INTVL_MIN; | |
4540 | } | |
4541 | ||
4542 | brmctx->multicast_query_interval = intvl_jiffies; | |
4543 | } | |
4544 | ||
f83a112b NA |
4545 | void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx, |
4546 | unsigned long val) | |
4547 | { | |
4548 | unsigned long intvl_jiffies = clock_t_to_jiffies(val); | |
4549 | ||
4550 | if (intvl_jiffies < BR_MULTICAST_STARTUP_QUERY_INTVL_MIN) { | |
4551 | br_info(brmctx->br, | |
4552 | "trying to set multicast startup query interval below minimum, setting to %lu (%ums)\n", | |
4553 | jiffies_to_clock_t(BR_MULTICAST_STARTUP_QUERY_INTVL_MIN), | |
4554 | jiffies_to_msecs(BR_MULTICAST_STARTUP_QUERY_INTVL_MIN)); | |
4555 | intvl_jiffies = BR_MULTICAST_STARTUP_QUERY_INTVL_MIN; | |
4556 | } | |
4557 | ||
4558 | brmctx->multicast_startup_query_interval = intvl_jiffies; | |
4559 | } | |
4560 | ||
07f8ac4a LL |
4561 | /** |
4562 | * br_multicast_list_adjacent - Returns snooped multicast addresses | |
4563 | * @dev: The bridge port adjacent to which to retrieve addresses | |
4564 | * @br_ip_list: The list to store found, snooped multicast IP addresses in | |
4565 | * | |
4566 | * Creates a list of IP addresses (struct br_ip_list) sensed by the multicast | |
4567 | * snooping feature on all bridge ports of dev's bridge device, excluding | |
4568 | * the addresses from dev itself. | |
4569 | * | |
4570 | * Returns the number of items added to br_ip_list. | |
4571 | * | |
4572 | * Notes: | |
4573 | * - br_ip_list needs to be initialized by caller | |
4574 | * - br_ip_list might contain duplicates in the end | |
4575 | * (needs to be taken care of by caller) | |
4576 | * - br_ip_list needs to be freed by caller | |
4577 | */ | |
4578 | int br_multicast_list_adjacent(struct net_device *dev, | |
4579 | struct list_head *br_ip_list) | |
4580 | { | |
4581 | struct net_bridge *br; | |
4582 | struct net_bridge_port *port; | |
4583 | struct net_bridge_port_group *group; | |
4584 | struct br_ip_list *entry; | |
4585 | int count = 0; | |
4586 | ||
4587 | rcu_read_lock(); | |
35f861e3 | 4588 | if (!br_ip_list || !netif_is_bridge_port(dev)) |
07f8ac4a LL |
4589 | goto unlock; |
4590 | ||
4591 | port = br_port_get_rcu(dev); | |
4592 | if (!port || !port->br) | |
4593 | goto unlock; | |
4594 | ||
4595 | br = port->br; | |
4596 | ||
4597 | list_for_each_entry_rcu(port, &br->port_list, list) { | |
4598 | if (!port->dev || port->dev == dev) | |
4599 | continue; | |
4600 | ||
4601 | hlist_for_each_entry_rcu(group, &port->mglist, mglist) { | |
4602 | entry = kmalloc(sizeof(*entry), GFP_ATOMIC); | |
4603 | if (!entry) | |
4604 | goto unlock; | |
4605 | ||
085b53c8 | 4606 | entry->addr = group->key.addr; |
07f8ac4a LL |
4607 | list_add(&entry->list, br_ip_list); |
4608 | count++; | |
4609 | } | |
4610 | } | |
4611 | ||
4612 | unlock: | |
4613 | rcu_read_unlock(); | |
4614 | return count; | |
4615 | } | |
4616 | EXPORT_SYMBOL_GPL(br_multicast_list_adjacent); | |
2cd41431 | 4617 | |
c34963e2 LL |
4618 | /** |
4619 | * br_multicast_has_querier_anywhere - Checks for a querier on a bridge | |
4620 | * @dev: The bridge port providing the bridge on which to check for a querier | |
4621 | * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 | |
4622 | * | |
4623 | * Checks whether the given interface has a bridge on top and if so returns | |
4624 | * true if a valid querier exists anywhere on the bridged link layer. | |
4625 | * Otherwise returns false. | |
4626 | */ | |
4627 | bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto) | |
4628 | { | |
4629 | struct net_bridge *br; | |
4630 | struct net_bridge_port *port; | |
4631 | struct ethhdr eth; | |
4632 | bool ret = false; | |
4633 | ||
4634 | rcu_read_lock(); | |
35f861e3 | 4635 | if (!netif_is_bridge_port(dev)) |
c34963e2 LL |
4636 | goto unlock; |
4637 | ||
4638 | port = br_port_get_rcu(dev); | |
4639 | if (!port || !port->br) | |
4640 | goto unlock; | |
4641 | ||
4642 | br = port->br; | |
4643 | ||
4644 | memset(ð, 0, sizeof(eth)); | |
4645 | eth.h_proto = htons(proto); | |
4646 | ||
adc47037 | 4647 | ret = br_multicast_querier_exists(&br->multicast_ctx, ð, NULL); |
c34963e2 LL |
4648 | |
4649 | unlock: | |
4650 | rcu_read_unlock(); | |
4651 | return ret; | |
4652 | } | |
4653 | EXPORT_SYMBOL_GPL(br_multicast_has_querier_anywhere); | |
4654 | ||
2cd41431 LL |
4655 | /** |
4656 | * br_multicast_has_querier_adjacent - Checks for a querier behind a bridge port | |
4657 | * @dev: The bridge port adjacent to which to check for a querier | |
4658 | * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 | |
4659 | * | |
4660 | * Checks whether the given interface has a bridge on top and if so returns | |
4661 | * true if a selected querier is behind one of the other ports of this | |
4662 | * bridge. Otherwise returns false. | |
4663 | */ | |
4664 | bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto) | |
4665 | { | |
d3d065c0 | 4666 | struct net_bridge_mcast *brmctx; |
2cd41431 LL |
4667 | struct net_bridge *br; |
4668 | struct net_bridge_port *port; | |
4669 | bool ret = false; | |
bb18ef8e | 4670 | int port_ifidx; |
2cd41431 LL |
4671 | |
4672 | rcu_read_lock(); | |
35f861e3 | 4673 | if (!netif_is_bridge_port(dev)) |
2cd41431 LL |
4674 | goto unlock; |
4675 | ||
4676 | port = br_port_get_rcu(dev); | |
4677 | if (!port || !port->br) | |
4678 | goto unlock; | |
4679 | ||
4680 | br = port->br; | |
d3d065c0 | 4681 | brmctx = &br->multicast_ctx; |
2cd41431 LL |
4682 | |
4683 | switch (proto) { | |
4684 | case ETH_P_IP: | |
bb18ef8e | 4685 | port_ifidx = brmctx->ip4_querier.port_ifidx; |
d3d065c0 | 4686 | if (!timer_pending(&brmctx->ip4_other_query.timer) || |
bb18ef8e | 4687 | port_ifidx == port->dev->ifindex) |
2cd41431 LL |
4688 | goto unlock; |
4689 | break; | |
3993c4e1 | 4690 | #if IS_ENABLED(CONFIG_IPV6) |
2cd41431 | 4691 | case ETH_P_IPV6: |
bb18ef8e | 4692 | port_ifidx = brmctx->ip6_querier.port_ifidx; |
d3d065c0 | 4693 | if (!timer_pending(&brmctx->ip6_other_query.timer) || |
bb18ef8e | 4694 | port_ifidx == port->dev->ifindex) |
2cd41431 LL |
4695 | goto unlock; |
4696 | break; | |
3993c4e1 | 4697 | #endif |
2cd41431 LL |
4698 | default: |
4699 | goto unlock; | |
4700 | } | |
4701 | ||
4702 | ret = true; | |
4703 | unlock: | |
4704 | rcu_read_unlock(); | |
4705 | return ret; | |
4706 | } | |
4707 | EXPORT_SYMBOL_GPL(br_multicast_has_querier_adjacent); | |
1080ab95 | 4708 | |
3b85f9ba LL |
4709 | /** |
4710 | * br_multicast_has_router_adjacent - Checks for a router behind a bridge port | |
4711 | * @dev: The bridge port adjacent to which to check for a multicast router | |
4712 | * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 | |
4713 | * | |
4714 | * Checks whether the given interface has a bridge on top and if so returns | |
4715 | * true if a multicast router is behind one of the other ports of this | |
4716 | * bridge. Otherwise returns false. | |
4717 | */ | |
4718 | bool br_multicast_has_router_adjacent(struct net_device *dev, int proto) | |
4719 | { | |
9632233e | 4720 | struct net_bridge_mcast_port *pmctx; |
d3d065c0 | 4721 | struct net_bridge_mcast *brmctx; |
9632233e | 4722 | struct net_bridge_port *port; |
3b85f9ba LL |
4723 | bool ret = false; |
4724 | ||
4725 | rcu_read_lock(); | |
4726 | port = br_port_get_check_rcu(dev); | |
4727 | if (!port) | |
4728 | goto unlock; | |
4729 | ||
d3d065c0 | 4730 | brmctx = &port->br->multicast_ctx; |
3b85f9ba LL |
4731 | switch (proto) { |
4732 | case ETH_P_IP: | |
d3d065c0 | 4733 | hlist_for_each_entry_rcu(pmctx, &brmctx->ip4_mc_router_list, |
3b85f9ba | 4734 | ip4_rlist) { |
9632233e | 4735 | if (pmctx->port == port) |
3b85f9ba LL |
4736 | continue; |
4737 | ||
4738 | ret = true; | |
4739 | goto unlock; | |
4740 | } | |
4741 | break; | |
4742 | #if IS_ENABLED(CONFIG_IPV6) | |
4743 | case ETH_P_IPV6: | |
d3d065c0 | 4744 | hlist_for_each_entry_rcu(pmctx, &brmctx->ip6_mc_router_list, |
3b85f9ba | 4745 | ip6_rlist) { |
9632233e | 4746 | if (pmctx->port == port) |
3b85f9ba LL |
4747 | continue; |
4748 | ||
4749 | ret = true; | |
4750 | goto unlock; | |
4751 | } | |
4752 | break; | |
4753 | #endif | |
4754 | default: | |
4755 | /* when compiled without IPv6 support, be conservative and | |
4756 | * always assume presence of an IPv6 multicast router | |
4757 | */ | |
4758 | ret = true; | |
4759 | } | |
4760 | ||
4761 | unlock: | |
4762 | rcu_read_unlock(); | |
4763 | return ret; | |
4764 | } | |
4765 | EXPORT_SYMBOL_GPL(br_multicast_has_router_adjacent); | |
4766 | ||
1080ab95 | 4767 | static void br_mcast_stats_add(struct bridge_mcast_stats __percpu *stats, |
a65056ec | 4768 | const struct sk_buff *skb, u8 type, u8 dir) |
1080ab95 NA |
4769 | { |
4770 | struct bridge_mcast_stats *pstats = this_cpu_ptr(stats); | |
a65056ec NA |
4771 | __be16 proto = skb->protocol; |
4772 | unsigned int t_len; | |
1080ab95 NA |
4773 | |
4774 | u64_stats_update_begin(&pstats->syncp); | |
4775 | switch (proto) { | |
4776 | case htons(ETH_P_IP): | |
a65056ec | 4777 | t_len = ntohs(ip_hdr(skb)->tot_len) - ip_hdrlen(skb); |
1080ab95 NA |
4778 | switch (type) { |
4779 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
4780 | pstats->mstats.igmp_v1reports[dir]++; | |
4781 | break; | |
4782 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
4783 | pstats->mstats.igmp_v2reports[dir]++; | |
4784 | break; | |
4785 | case IGMPV3_HOST_MEMBERSHIP_REPORT: | |
4786 | pstats->mstats.igmp_v3reports[dir]++; | |
4787 | break; | |
4788 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
a65056ec NA |
4789 | if (t_len != sizeof(struct igmphdr)) { |
4790 | pstats->mstats.igmp_v3queries[dir]++; | |
4791 | } else { | |
4792 | unsigned int offset = skb_transport_offset(skb); | |
4793 | struct igmphdr *ih, _ihdr; | |
4794 | ||
4795 | ih = skb_header_pointer(skb, offset, | |
4796 | sizeof(_ihdr), &_ihdr); | |
4797 | if (!ih) | |
4798 | break; | |
4799 | if (!ih->code) | |
4800 | pstats->mstats.igmp_v1queries[dir]++; | |
4801 | else | |
4802 | pstats->mstats.igmp_v2queries[dir]++; | |
4803 | } | |
1080ab95 NA |
4804 | break; |
4805 | case IGMP_HOST_LEAVE_MESSAGE: | |
4806 | pstats->mstats.igmp_leaves[dir]++; | |
4807 | break; | |
4808 | } | |
4809 | break; | |
4810 | #if IS_ENABLED(CONFIG_IPV6) | |
4811 | case htons(ETH_P_IPV6): | |
a65056ec NA |
4812 | t_len = ntohs(ipv6_hdr(skb)->payload_len) + |
4813 | sizeof(struct ipv6hdr); | |
4814 | t_len -= skb_network_header_len(skb); | |
1080ab95 NA |
4815 | switch (type) { |
4816 | case ICMPV6_MGM_REPORT: | |
4817 | pstats->mstats.mld_v1reports[dir]++; | |
4818 | break; | |
4819 | case ICMPV6_MLD2_REPORT: | |
4820 | pstats->mstats.mld_v2reports[dir]++; | |
4821 | break; | |
4822 | case ICMPV6_MGM_QUERY: | |
a65056ec NA |
4823 | if (t_len != sizeof(struct mld_msg)) |
4824 | pstats->mstats.mld_v2queries[dir]++; | |
4825 | else | |
4826 | pstats->mstats.mld_v1queries[dir]++; | |
1080ab95 NA |
4827 | break; |
4828 | case ICMPV6_MGM_REDUCTION: | |
4829 | pstats->mstats.mld_leaves[dir]++; | |
4830 | break; | |
4831 | } | |
4832 | break; | |
4833 | #endif /* CONFIG_IPV6 */ | |
4834 | } | |
4835 | u64_stats_update_end(&pstats->syncp); | |
4836 | } | |
4837 | ||
adc47037 NA |
4838 | void br_multicast_count(struct net_bridge *br, |
4839 | const struct net_bridge_port *p, | |
a65056ec | 4840 | const struct sk_buff *skb, u8 type, u8 dir) |
1080ab95 NA |
4841 | { |
4842 | struct bridge_mcast_stats __percpu *stats; | |
4843 | ||
4844 | /* if multicast_disabled is true then igmp type can't be set */ | |
675779ad | 4845 | if (!type || !br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) |
1080ab95 NA |
4846 | return; |
4847 | ||
4848 | if (p) | |
4849 | stats = p->mcast_stats; | |
4850 | else | |
4851 | stats = br->mcast_stats; | |
4852 | if (WARN_ON(!stats)) | |
4853 | return; | |
4854 | ||
a65056ec | 4855 | br_mcast_stats_add(stats, skb, type, dir); |
1080ab95 NA |
4856 | } |
4857 | ||
4858 | int br_multicast_init_stats(struct net_bridge *br) | |
4859 | { | |
4860 | br->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats); | |
4861 | if (!br->mcast_stats) | |
4862 | return -ENOMEM; | |
4863 | ||
4864 | return 0; | |
4865 | } | |
4866 | ||
b6fe0440 IS |
4867 | void br_multicast_uninit_stats(struct net_bridge *br) |
4868 | { | |
4869 | free_percpu(br->mcast_stats); | |
4870 | } | |
4871 | ||
b3b6a84c AB |
4872 | /* noinline for https://bugs.llvm.org/show_bug.cgi?id=45802#c9 */ |
4873 | static noinline_for_stack void mcast_stats_add_dir(u64 *dst, u64 *src) | |
1080ab95 NA |
4874 | { |
4875 | dst[BR_MCAST_DIR_RX] += src[BR_MCAST_DIR_RX]; | |
4876 | dst[BR_MCAST_DIR_TX] += src[BR_MCAST_DIR_TX]; | |
4877 | } | |
4878 | ||
4879 | void br_multicast_get_stats(const struct net_bridge *br, | |
4880 | const struct net_bridge_port *p, | |
4881 | struct br_mcast_stats *dest) | |
4882 | { | |
4883 | struct bridge_mcast_stats __percpu *stats; | |
4884 | struct br_mcast_stats tdst; | |
4885 | int i; | |
4886 | ||
4887 | memset(dest, 0, sizeof(*dest)); | |
4888 | if (p) | |
4889 | stats = p->mcast_stats; | |
4890 | else | |
4891 | stats = br->mcast_stats; | |
4892 | if (WARN_ON(!stats)) | |
4893 | return; | |
4894 | ||
4895 | memset(&tdst, 0, sizeof(tdst)); | |
4896 | for_each_possible_cpu(i) { | |
4897 | struct bridge_mcast_stats *cpu_stats = per_cpu_ptr(stats, i); | |
4898 | struct br_mcast_stats temp; | |
4899 | unsigned int start; | |
4900 | ||
4901 | do { | |
d120d1a6 | 4902 | start = u64_stats_fetch_begin(&cpu_stats->syncp); |
1080ab95 | 4903 | memcpy(&temp, &cpu_stats->mstats, sizeof(temp)); |
d120d1a6 | 4904 | } while (u64_stats_fetch_retry(&cpu_stats->syncp, start)); |
1080ab95 | 4905 | |
a65056ec NA |
4906 | mcast_stats_add_dir(tdst.igmp_v1queries, temp.igmp_v1queries); |
4907 | mcast_stats_add_dir(tdst.igmp_v2queries, temp.igmp_v2queries); | |
4908 | mcast_stats_add_dir(tdst.igmp_v3queries, temp.igmp_v3queries); | |
1080ab95 NA |
4909 | mcast_stats_add_dir(tdst.igmp_leaves, temp.igmp_leaves); |
4910 | mcast_stats_add_dir(tdst.igmp_v1reports, temp.igmp_v1reports); | |
4911 | mcast_stats_add_dir(tdst.igmp_v2reports, temp.igmp_v2reports); | |
4912 | mcast_stats_add_dir(tdst.igmp_v3reports, temp.igmp_v3reports); | |
4913 | tdst.igmp_parse_errors += temp.igmp_parse_errors; | |
4914 | ||
a65056ec NA |
4915 | mcast_stats_add_dir(tdst.mld_v1queries, temp.mld_v1queries); |
4916 | mcast_stats_add_dir(tdst.mld_v2queries, temp.mld_v2queries); | |
1080ab95 NA |
4917 | mcast_stats_add_dir(tdst.mld_leaves, temp.mld_leaves); |
4918 | mcast_stats_add_dir(tdst.mld_v1reports, temp.mld_v1reports); | |
4919 | mcast_stats_add_dir(tdst.mld_v2reports, temp.mld_v2reports); | |
4920 | tdst.mld_parse_errors += temp.mld_parse_errors; | |
4921 | } | |
4922 | memcpy(dest, &tdst, sizeof(*dest)); | |
4923 | } | |
19e3a9c9 NA |
4924 | |
4925 | int br_mdb_hash_init(struct net_bridge *br) | |
4926 | { | |
085b53c8 NA |
4927 | int err; |
4928 | ||
4929 | err = rhashtable_init(&br->sg_port_tbl, &br_sg_port_rht_params); | |
4930 | if (err) | |
4931 | return err; | |
4932 | ||
4933 | err = rhashtable_init(&br->mdb_hash_tbl, &br_mdb_rht_params); | |
4934 | if (err) { | |
4935 | rhashtable_destroy(&br->sg_port_tbl); | |
4936 | return err; | |
4937 | } | |
4938 | ||
4939 | return 0; | |
19e3a9c9 NA |
4940 | } |
4941 | ||
4942 | void br_mdb_hash_fini(struct net_bridge *br) | |
4943 | { | |
085b53c8 | 4944 | rhashtable_destroy(&br->sg_port_tbl); |
19e3a9c9 NA |
4945 | rhashtable_destroy(&br->mdb_hash_tbl); |
4946 | } |