Lines Matching +full:multi +full:- +full:socket
1 // SPDX-License-Identifier: GPL-2.0-or-later
30 * Chih-Jen Chang : Tried to revise IGMP to Version 2
31 * Tsu-Sheng Tsao E-mail: chihjenc@scf.usc.edu and tsusheng@scf.usc.edu
33 * ipmulti-3.5 source code.
34 * Chih-Jen Chang : Added the igmp_get_mrouter_info and
35 * Tsu-Sheng Tsao igmp_set_mrouter_info to keep track of
37 * Chih-Jen Chang : Added the max_resp_time parameter to
38 * Tsu-Sheng Tsao igmp_heard_query(). Using this parameter
41 * Chih-Jen Chang : Added a timer to revert to IGMP V2 router
42 * Tsu-Sheng Tsao if the specified time expired.
53 * igmp_timer_expire if tm->running is
64 * Alexey Kuznetsov: Accordance to igmp-v2-06 draft.
76 #include <linux/socket.h>
108 /* Parameter names and values are taken from igmp-v2-06 draft */
123 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 1 || \
125 ((in_dev)->mr_v1_seen && \
126 time_before(jiffies, (in_dev)->mr_v1_seen)))
128 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 2 || \
130 ((in_dev)->mr_v2_seen && \
131 time_before(jiffies, (in_dev)->mr_v2_seen)))
169 if (refcount_dec_and_test(&im->refcnt)) { in ip_ma_put()
170 in_dev_put(im->interface); in ip_ma_put()
176 for (pmc = rcu_dereference(in_dev->mc_list); \
178 pmc = rcu_dereference(pmc->next_rcu))
181 for (pmc = rtnl_dereference(in_dev->mc_list); \
183 pmc = rtnl_dereference(pmc->next_rcu))
190 next = psf->sf_next; in ip_sf_list_clear_all()
204 spin_lock_bh(&im->lock); in igmp_stop_timer()
205 if (del_timer(&im->timer)) in igmp_stop_timer()
206 refcount_dec(&im->refcnt); in igmp_stop_timer()
207 im->tm_running = 0; in igmp_stop_timer()
208 im->reporter = 0; in igmp_stop_timer()
209 im->unsolicit_count = 0; in igmp_stop_timer()
210 spin_unlock_bh(&im->lock); in igmp_stop_timer()
213 /* It must be called with locked im->lock */
218 im->tm_running = 1; in igmp_start_timer()
219 if (!mod_timer(&im->timer, jiffies+tv+2)) in igmp_start_timer()
220 refcount_inc(&im->refcnt); in igmp_start_timer()
225 int tv = prandom_u32() % in_dev->mr_maxdelay; in igmp_gq_start_timer()
228 if (in_dev->mr_gq_running && in igmp_gq_start_timer()
229 time_after_eq(exp, (in_dev->mr_gq_timer).expires)) in igmp_gq_start_timer()
232 in_dev->mr_gq_running = 1; in igmp_gq_start_timer()
233 if (!mod_timer(&in_dev->mr_gq_timer, exp)) in igmp_gq_start_timer()
241 if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2)) in igmp_ifc_start_timer()
247 spin_lock_bh(&im->lock); in igmp_mod_timer()
248 im->unsolicit_count = 0; in igmp_mod_timer()
249 if (del_timer(&im->timer)) { in igmp_mod_timer()
250 if ((long)(im->timer.expires-jiffies) < max_delay) { in igmp_mod_timer()
251 add_timer(&im->timer); in igmp_mod_timer()
252 im->tm_running = 1; in igmp_mod_timer()
253 spin_unlock_bh(&im->lock); in igmp_mod_timer()
256 refcount_dec(&im->refcnt); in igmp_mod_timer()
259 spin_unlock_bh(&im->lock); in igmp_mod_timer()
278 if (!(pmc->gsquery && !psf->sf_gsresp)) { in is_in()
279 if (pmc->sfmode == MCAST_INCLUDE) in is_in()
284 if (psf->sf_count[MCAST_INCLUDE]) in is_in()
286 return pmc->sfcount[MCAST_EXCLUDE] == in is_in()
287 psf->sf_count[MCAST_EXCLUDE]; in is_in()
293 return psf->sf_count[MCAST_INCLUDE] != 0; in is_in()
297 if (pmc->sfcount[MCAST_EXCLUDE] == 0 || in is_in()
298 psf->sf_count[MCAST_INCLUDE]) in is_in()
300 return pmc->sfcount[MCAST_EXCLUDE] == in is_in()
301 psf->sf_count[MCAST_EXCLUDE]; in is_in()
303 if (gdeleted || !psf->sf_crcount) in is_in()
305 return (pmc->sfmode == MCAST_INCLUDE) ^ sdeleted; in is_in()
307 if (pmc->sfmode == MCAST_INCLUDE) in is_in()
308 return gdeleted || (psf->sf_crcount && sdeleted); in is_in()
309 return psf->sf_crcount && !gdeleted && !sdeleted; in is_in()
320 for (psf = pmc->sources; psf; psf = psf->sf_next) { in igmp_scount()
339 if (fl4->saddr == ifa->ifa_local) in igmpv3_get_srcaddr()
340 return fl4->saddr; in igmpv3_get_srcaddr()
355 int tlen = dev->needed_tailroom; in igmpv3_newpack()
367 skb->priority = TC_PRIO_CONTROL; in igmpv3_newpack()
371 IPPROTO_IGMP, 0, dev->ifindex); in igmpv3_newpack()
377 skb_dst_set(skb, &rt->dst); in igmpv3_newpack()
378 skb->dev = dev; in igmpv3_newpack()
387 pip->version = 4; in igmpv3_newpack()
388 pip->ihl = (sizeof(struct iphdr)+4)>>2; in igmpv3_newpack()
389 pip->tos = 0xc0; in igmpv3_newpack()
390 pip->frag_off = htons(IP_DF); in igmpv3_newpack()
391 pip->ttl = 1; in igmpv3_newpack()
392 pip->daddr = fl4.daddr; in igmpv3_newpack()
395 pip->saddr = igmpv3_get_srcaddr(dev, &fl4); in igmpv3_newpack()
398 pip->protocol = IPPROTO_IGMP; in igmpv3_newpack()
399 pip->tot_len = 0; /* filled in later */ in igmpv3_newpack()
406 skb->transport_header = skb->network_header + sizeof(struct iphdr) + 4; in igmpv3_newpack()
409 pig->type = IGMPV3_HOST_MEMBERSHIP_REPORT; in igmpv3_newpack()
410 pig->resv1 = 0; in igmpv3_newpack()
411 pig->csum = 0; in igmpv3_newpack()
412 pig->resv2 = 0; in igmpv3_newpack()
413 pig->ngrec = 0; in igmpv3_newpack()
420 const int igmplen = skb_tail_pointer(skb) - skb_transport_header(skb); in igmpv3_sendpack()
422 pig->csum = ip_compute_csum(igmp_hdr(skb), igmplen); in igmpv3_sendpack()
424 return ip_local_out(dev_net(skb_dst(skb)->dev), skb->sk, skb); in igmpv3_sendpack()
435 struct net_device *dev = pmc->interface->dev; in add_grhead()
445 pgr->grec_type = type; in add_grhead()
446 pgr->grec_auxwords = 0; in add_grhead()
447 pgr->grec_nsrcs = 0; in add_grhead()
448 pgr->grec_mca = pmc->multiaddr; in add_grhead()
450 pih->ngrec = htons(ntohs(pih->ngrec)+1); in add_grhead()
460 struct net_device *dev = pmc->interface->dev; in add_grec()
468 if (pmc->multiaddr == IGMP_ALL_HOSTS) in add_grec()
470 if (ipv4_is_local_multicast(pmc->multiaddr) && !net->ipv4.sysctl_igmp_llm_reports) in add_grec()
473 mtu = READ_ONCE(dev->mtu); in add_grec()
484 psf_list = sdeleted ? &pmc->tomb : &pmc->sources; in add_grec()
493 if (pih && pih->ngrec && in add_grec()
505 psf_next = psf->sf_next; in add_grec()
512 /* Based on RFC3376 5.1. Should not send source-list change in add_grec()
515 if (((gdeleted && pmc->sfmode == MCAST_EXCLUDE) || in add_grec()
516 (!gdeleted && pmc->crcount)) && in add_grec()
518 type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) in add_grec()
523 psf->sf_gsresp = 0; in add_grec()
530 pgr->grec_nsrcs = htons(scount); in add_grec()
544 *psrc = psf->sf_inaddr; in add_grec()
547 type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) { in add_grec()
549 psf->sf_crcount--; in add_grec()
550 if ((sdeleted || gdeleted) && psf->sf_crcount == 0) { in add_grec()
552 psf_prev->sf_next = psf->sf_next; in add_grec()
554 *psf_list = psf->sf_next; in add_grec()
567 if (pmc->crcount || isquery) { in add_grec()
577 pgr->grec_nsrcs = htons(scount); in add_grec()
580 pmc->gsquery = 0; /* clear query state on report */ in add_grec()
587 struct net *net = dev_net(in_dev->dev); in igmpv3_send_report()
593 if (pmc->multiaddr == IGMP_ALL_HOSTS) in igmpv3_send_report()
595 if (ipv4_is_local_multicast(pmc->multiaddr) && in igmpv3_send_report()
596 !net->ipv4.sysctl_igmp_llm_reports) in igmpv3_send_report()
598 spin_lock_bh(&pmc->lock); in igmpv3_send_report()
599 if (pmc->sfcount[MCAST_EXCLUDE]) in igmpv3_send_report()
604 spin_unlock_bh(&pmc->lock); in igmpv3_send_report()
608 spin_lock_bh(&pmc->lock); in igmpv3_send_report()
609 if (pmc->sfcount[MCAST_EXCLUDE]) in igmpv3_send_report()
614 spin_unlock_bh(&pmc->lock); in igmpv3_send_report()
622 * remove zero-count source records from a source filter list
630 psf_next = psf->sf_next; in igmpv3_clear_zeros()
631 if (psf->sf_crcount == 0) { in igmpv3_clear_zeros()
633 psf_prev->sf_next = psf->sf_next; in igmpv3_clear_zeros()
635 *ppsf = psf->sf_next; in igmpv3_clear_zeros()
644 ip_sf_list_clear_all(pmc->sources); in kfree_pmc()
645 ip_sf_list_clear_all(pmc->tomb); in kfree_pmc()
656 spin_lock_bh(&in_dev->mc_tomb_lock); in igmpv3_send_cr()
660 for (pmc = in_dev->mc_tomb; pmc; pmc = pmc_next) { in igmpv3_send_cr()
661 pmc_next = pmc->next; in igmpv3_send_cr()
662 if (pmc->sfmode == MCAST_INCLUDE) { in igmpv3_send_cr()
668 if (pmc->crcount) { in igmpv3_send_cr()
669 if (pmc->sfmode == MCAST_EXCLUDE) { in igmpv3_send_cr()
673 pmc->crcount--; in igmpv3_send_cr()
674 if (pmc->crcount == 0) { in igmpv3_send_cr()
675 igmpv3_clear_zeros(&pmc->tomb); in igmpv3_send_cr()
676 igmpv3_clear_zeros(&pmc->sources); in igmpv3_send_cr()
679 if (pmc->crcount == 0 && !pmc->tomb && !pmc->sources) { in igmpv3_send_cr()
681 pmc_prev->next = pmc_next; in igmpv3_send_cr()
683 in_dev->mc_tomb = pmc_next; in igmpv3_send_cr()
684 in_dev_put(pmc->interface); in igmpv3_send_cr()
689 spin_unlock_bh(&in_dev->mc_tomb_lock); in igmpv3_send_cr()
693 spin_lock_bh(&pmc->lock); in igmpv3_send_cr()
694 if (pmc->sfcount[MCAST_EXCLUDE]) { in igmpv3_send_cr()
705 if (pmc->crcount) { in igmpv3_send_cr()
706 if (pmc->sfmode == MCAST_EXCLUDE) in igmpv3_send_cr()
711 pmc->crcount--; in igmpv3_send_cr()
713 spin_unlock_bh(&pmc->lock); in igmpv3_send_cr()
729 struct net_device *dev = in_dev->dev; in igmp_send_report()
731 __be32 group = pmc ? pmc->multiaddr : 0; in igmp_send_report()
739 if (ipv4_is_local_multicast(group) && !net->ipv4.sysctl_igmp_llm_reports) in igmp_send_report()
749 IPPROTO_IGMP, 0, dev->ifindex); in igmp_send_report()
751 return -1; in igmp_send_report()
754 tlen = dev->needed_tailroom; in igmp_send_report()
758 return -1; in igmp_send_report()
760 skb->priority = TC_PRIO_CONTROL; in igmp_send_report()
762 skb_dst_set(skb, &rt->dst); in igmp_send_report()
770 iph->version = 4; in igmp_send_report()
771 iph->ihl = (sizeof(struct iphdr)+4)>>2; in igmp_send_report()
772 iph->tos = 0xc0; in igmp_send_report()
773 iph->frag_off = htons(IP_DF); in igmp_send_report()
774 iph->ttl = 1; in igmp_send_report()
775 iph->daddr = dst; in igmp_send_report()
776 iph->saddr = fl4.saddr; in igmp_send_report()
777 iph->protocol = IPPROTO_IGMP; in igmp_send_report()
785 ih->type = type; in igmp_send_report()
786 ih->code = 0; in igmp_send_report()
787 ih->csum = 0; in igmp_send_report()
788 ih->group = group; in igmp_send_report()
789 ih->csum = ip_compute_csum((void *)ih, sizeof(struct igmphdr)); in igmp_send_report()
791 return ip_local_out(net, skb->sk, skb); in igmp_send_report()
798 in_dev->mr_gq_running = 0; in igmp_gq_timer_expire()
810 mr_ifc_count = READ_ONCE(in_dev->mr_ifc_count); in igmp_ifc_timer_expire()
813 if (cmpxchg(&in_dev->mr_ifc_count, in igmp_ifc_timer_expire()
815 mr_ifc_count - 1) != mr_ifc_count) in igmp_ifc_timer_expire()
825 struct net *net = dev_net(in_dev->dev); in igmp_ifc_event()
828 WRITE_ONCE(in_dev->mr_ifc_count, in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv); in igmp_ifc_event()
836 struct in_device *in_dev = im->interface; in igmp_timer_expire()
838 spin_lock(&im->lock); in igmp_timer_expire()
839 im->tm_running = 0; in igmp_timer_expire()
841 if (im->unsolicit_count && --im->unsolicit_count) in igmp_timer_expire()
844 im->reporter = 1; in igmp_timer_expire()
845 spin_unlock(&im->lock); in igmp_timer_expire()
857 /* mark EXCLUDE-mode sources */
864 for (psf = pmc->sources; psf; psf = psf->sf_next) { in igmp_xmarksources()
869 if (psf->sf_count[MCAST_INCLUDE] || in igmp_xmarksources()
870 pmc->sfcount[MCAST_EXCLUDE] != in igmp_xmarksources()
871 psf->sf_count[MCAST_EXCLUDE]) in igmp_xmarksources()
873 if (srcs[i] == psf->sf_inaddr) { in igmp_xmarksources()
879 pmc->gsquery = 0; in igmp_xmarksources()
890 if (pmc->sfmode == MCAST_EXCLUDE) in igmp_marksources()
893 /* mark INCLUDE-mode sources */ in igmp_marksources()
895 for (psf = pmc->sources; psf; psf = psf->sf_next) { in igmp_marksources()
899 if (srcs[i] == psf->sf_inaddr) { in igmp_marksources()
900 psf->sf_gsresp = 1; in igmp_marksources()
906 pmc->gsquery = 0; in igmp_marksources()
909 pmc->gsquery = 1; in igmp_marksources()
917 struct net *net = dev_net(in_dev->dev); in igmp_heard_report()
919 /* Timers are only set for non-local groups */ in igmp_heard_report()
923 if (ipv4_is_local_multicast(group) && !net->ipv4.sysctl_igmp_llm_reports) in igmp_heard_report()
928 if (im->multiaddr == group) { in igmp_heard_report()
944 __be32 group = ih->group; in igmp_heard_query()
947 struct net *net = dev_net(in_dev->dev); in igmp_heard_query()
951 if (ih->code == 0) { in igmp_heard_query()
955 in_dev->mr_v1_seen = jiffies + in igmp_heard_query()
956 (in_dev->mr_qrv * in_dev->mr_qi) + in igmp_heard_query()
957 in_dev->mr_qri; in igmp_heard_query()
961 max_delay = ih->code*(HZ/IGMP_TIMER_SCALE); in igmp_heard_query()
962 in_dev->mr_v2_seen = jiffies + in igmp_heard_query()
963 (in_dev->mr_qrv * in_dev->mr_qi) + in igmp_heard_query()
964 in_dev->mr_qri; in igmp_heard_query()
967 WRITE_ONCE(in_dev->mr_ifc_count, 0); in igmp_heard_query()
968 if (del_timer(&in_dev->mr_ifc_timer)) in igmp_heard_query()
985 max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE); in igmp_heard_query()
993 if (ih3->nsrcs) { in igmp_heard_query()
995 + ntohs(ih3->nsrcs)*sizeof(__be32))) in igmp_heard_query()
1000 max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE); in igmp_heard_query()
1003 in_dev->mr_maxdelay = max_delay; in igmp_heard_query()
1009 in_dev->mr_qrv = ih3->qrv ?: net->ipv4.sysctl_igmp_qrv; in igmp_heard_query()
1010 in_dev->mr_qi = IGMPV3_QQIC(ih3->qqic)*HZ ?: IGMP_QUERY_INTERVAL; in igmp_heard_query()
1016 if (in_dev->mr_qri >= in_dev->mr_qi) in igmp_heard_query()
1017 in_dev->mr_qri = (in_dev->mr_qi/HZ - 1)*HZ; in igmp_heard_query()
1020 if (ih3->nsrcs) in igmp_heard_query()
1025 /* mark sources to include, if group & source-specific */ in igmp_heard_query()
1026 mark = ih3->nsrcs != 0; in igmp_heard_query()
1030 * - Start the timers in all of our membership records in igmp_heard_query()
1034 * - For timers already running check if they need to in igmp_heard_query()
1036 * - Use the igmp->igmp_code field as the maximum in igmp_heard_query()
1043 if (group && group != im->multiaddr) in igmp_heard_query()
1045 if (im->multiaddr == IGMP_ALL_HOSTS) in igmp_heard_query()
1047 if (ipv4_is_local_multicast(im->multiaddr) && in igmp_heard_query()
1048 !net->ipv4.sysctl_igmp_llm_reports) in igmp_heard_query()
1050 spin_lock_bh(&im->lock); in igmp_heard_query()
1051 if (im->tm_running) in igmp_heard_query()
1052 im->gsquery = im->gsquery && mark; in igmp_heard_query()
1054 im->gsquery = mark; in igmp_heard_query()
1055 changed = !im->gsquery || in igmp_heard_query()
1056 igmp_marksources(im, ntohs(ih3->nsrcs), ih3->srcs); in igmp_heard_query()
1057 spin_unlock_bh(&im->lock); in igmp_heard_query()
1068 /* This basically follows the spec line by line -- see RFC1112 */ in igmp_rcv()
1070 struct net_device *dev = skb->dev; in igmp_rcv()
1072 int len = skb->len; in igmp_rcv()
1076 dev = dev_get_by_index_rcu(dev_net(dev), IPCB(skb)->iif); in igmp_rcv()
1092 switch (ih->type) { in igmp_rcv()
1102 if (skb->pkt_type == PACKET_MULTICAST || in igmp_rcv()
1103 skb->pkt_type == PACKET_BROADCAST) in igmp_rcv()
1104 dropped = igmp_heard_report(in_dev, ih->group); in igmp_rcv()
1139 struct net_device *dev = in_dev->dev; in ip_mc_filter_add()
1141 /* Checking for IFF_MULTICAST here is WRONG-WRONG-WRONG. in ip_mc_filter_add()
1145 if (dev->mc_list && dev->flags&IFF_MULTICAST) { do it; } in ip_mc_filter_add()
1146 --ANK in ip_mc_filter_add()
1159 struct net_device *dev = in_dev->dev; in ip_mc_filter_del()
1173 struct net *net = dev_net(in_dev->dev); in igmpv3_add_delrec()
1179 * non-deleted or query-response MCA's. in igmpv3_add_delrec()
1184 spin_lock_init(&pmc->lock); in igmpv3_add_delrec()
1185 spin_lock_bh(&im->lock); in igmpv3_add_delrec()
1186 pmc->interface = im->interface; in igmpv3_add_delrec()
1188 pmc->multiaddr = im->multiaddr; in igmpv3_add_delrec()
1189 pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in igmpv3_add_delrec()
1190 pmc->sfmode = im->sfmode; in igmpv3_add_delrec()
1191 if (pmc->sfmode == MCAST_INCLUDE) { in igmpv3_add_delrec()
1194 pmc->tomb = im->tomb; in igmpv3_add_delrec()
1195 pmc->sources = im->sources; in igmpv3_add_delrec()
1196 im->tomb = im->sources = NULL; in igmpv3_add_delrec()
1197 for (psf = pmc->sources; psf; psf = psf->sf_next) in igmpv3_add_delrec()
1198 psf->sf_crcount = pmc->crcount; in igmpv3_add_delrec()
1200 spin_unlock_bh(&im->lock); in igmpv3_add_delrec()
1202 spin_lock_bh(&in_dev->mc_tomb_lock); in igmpv3_add_delrec()
1203 pmc->next = in_dev->mc_tomb; in igmpv3_add_delrec()
1204 in_dev->mc_tomb = pmc; in igmpv3_add_delrec()
1205 spin_unlock_bh(&in_dev->mc_tomb_lock); in igmpv3_add_delrec()
1215 struct net *net = dev_net(in_dev->dev); in igmpv3_del_delrec()
1216 __be32 multiaddr = im->multiaddr; in igmpv3_del_delrec()
1218 spin_lock_bh(&in_dev->mc_tomb_lock); in igmpv3_del_delrec()
1220 for (pmc = in_dev->mc_tomb; pmc; pmc = pmc->next) { in igmpv3_del_delrec()
1221 if (pmc->multiaddr == multiaddr) in igmpv3_del_delrec()
1227 pmc_prev->next = pmc->next; in igmpv3_del_delrec()
1229 in_dev->mc_tomb = pmc->next; in igmpv3_del_delrec()
1231 spin_unlock_bh(&in_dev->mc_tomb_lock); in igmpv3_del_delrec()
1233 spin_lock_bh(&im->lock); in igmpv3_del_delrec()
1235 im->interface = pmc->interface; in igmpv3_del_delrec()
1236 if (im->sfmode == MCAST_INCLUDE) { in igmpv3_del_delrec()
1237 swap(im->tomb, pmc->tomb); in igmpv3_del_delrec()
1238 swap(im->sources, pmc->sources); in igmpv3_del_delrec()
1239 for (psf = im->sources; psf; psf = psf->sf_next) in igmpv3_del_delrec()
1240 psf->sf_crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in igmpv3_del_delrec()
1242 im->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in igmpv3_del_delrec()
1244 in_dev_put(pmc->interface); in igmpv3_del_delrec()
1247 spin_unlock_bh(&im->lock); in igmpv3_del_delrec()
1257 spin_lock_bh(&in_dev->mc_tomb_lock); in igmpv3_clear_delrec()
1258 pmc = in_dev->mc_tomb; in igmpv3_clear_delrec()
1259 in_dev->mc_tomb = NULL; in igmpv3_clear_delrec()
1260 spin_unlock_bh(&in_dev->mc_tomb_lock); in igmpv3_clear_delrec()
1263 nextpmc = pmc->next; in igmpv3_clear_delrec()
1265 in_dev_put(pmc->interface); in igmpv3_clear_delrec()
1273 spin_lock_bh(&pmc->lock); in igmpv3_clear_delrec()
1274 psf = pmc->tomb; in igmpv3_clear_delrec()
1275 pmc->tomb = NULL; in igmpv3_clear_delrec()
1276 spin_unlock_bh(&pmc->lock); in igmpv3_clear_delrec()
1285 struct in_device *in_dev = im->interface; in __igmp_group_dropped()
1287 struct net *net = dev_net(in_dev->dev); in __igmp_group_dropped()
1291 if (im->loaded) { in __igmp_group_dropped()
1292 im->loaded = 0; in __igmp_group_dropped()
1293 ip_mc_filter_del(in_dev, im->multiaddr); in __igmp_group_dropped()
1297 if (im->multiaddr == IGMP_ALL_HOSTS) in __igmp_group_dropped()
1299 if (ipv4_is_local_multicast(im->multiaddr) && !net->ipv4.sysctl_igmp_llm_reports) in __igmp_group_dropped()
1302 reporter = im->reporter; in __igmp_group_dropped()
1305 if (!in_dev->dead) { in __igmp_group_dropped()
1328 struct in_device *in_dev = im->interface; in igmp_group_added()
1330 struct net *net = dev_net(in_dev->dev); in igmp_group_added()
1333 if (im->loaded == 0) { in igmp_group_added()
1334 im->loaded = 1; in igmp_group_added()
1335 ip_mc_filter_add(in_dev, im->multiaddr); in igmp_group_added()
1339 if (im->multiaddr == IGMP_ALL_HOSTS) in igmp_group_added()
1341 if (ipv4_is_local_multicast(im->multiaddr) && !net->ipv4.sysctl_igmp_llm_reports) in igmp_group_added()
1344 if (in_dev->dead) in igmp_group_added()
1347 im->unsolicit_count = net->ipv4.sysctl_igmp_qrv; in igmp_group_added()
1349 spin_lock_bh(&im->lock); in igmp_group_added()
1351 spin_unlock_bh(&im->lock); in igmp_group_added()
1357 * not send filter-mode change record as the mode should be from in igmp_group_added()
1360 if (im->sfmode == MCAST_EXCLUDE) in igmp_group_added()
1361 im->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in igmp_group_added()
1374 return hash_32((__force u32)im->multiaddr, MC_HASH_SZ_LOG); in ip_mc_hash()
1383 mc_hash = rtnl_dereference(in_dev->mc_hash); in ip_mc_hash_add()
1386 im->next_hash = mc_hash[hash]; in ip_mc_hash_add()
1392 if (in_dev->mc_count < 4) in ip_mc_hash_add()
1402 im->next_hash = mc_hash[hash]; in ip_mc_hash_add()
1406 rcu_assign_pointer(in_dev->mc_hash, mc_hash); in ip_mc_hash_add()
1412 struct ip_mc_list __rcu **mc_hash = rtnl_dereference(in_dev->mc_hash); in ip_mc_hash_remove()
1419 mc_hash = &aux->next_hash; in ip_mc_hash_remove()
1420 *mc_hash = im->next_hash; in ip_mc_hash_remove()
1425 * A socket has joined a multicast group on device dev.
1435 if (im->multiaddr == addr) { in ____ip_mc_inc_group()
1436 im->users++; in ____ip_mc_inc_group()
1446 im->users = 1; in ____ip_mc_inc_group()
1447 im->interface = in_dev; in ____ip_mc_inc_group()
1449 im->multiaddr = addr; in ____ip_mc_inc_group()
1451 im->sfmode = mode; in ____ip_mc_inc_group()
1452 im->sfcount[mode] = 1; in ____ip_mc_inc_group()
1453 refcount_set(&im->refcnt, 1); in ____ip_mc_inc_group()
1454 spin_lock_init(&im->lock); in ____ip_mc_inc_group()
1456 timer_setup(&im->timer, igmp_timer_expire, 0); in ____ip_mc_inc_group()
1459 im->next_rcu = in_dev->mc_list; in ____ip_mc_inc_group()
1460 in_dev->mc_count++; in ____ip_mc_inc_group()
1461 rcu_assign_pointer(in_dev->mc_list, im); in ____ip_mc_inc_group()
1469 if (!in_dev->dead) in ____ip_mc_inc_group()
1494 return -EINVAL; in ip_mc_check_iphdr()
1498 if (iph->version != 4 || ip_hdrlen(skb) < sizeof(*iph)) in ip_mc_check_iphdr()
1499 return -EINVAL; in ip_mc_check_iphdr()
1501 offset += ip_hdrlen(skb) - sizeof(*iph); in ip_mc_check_iphdr()
1504 return -EINVAL; in ip_mc_check_iphdr()
1508 if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl))) in ip_mc_check_iphdr()
1509 return -EINVAL; in ip_mc_check_iphdr()
1511 len = skb_network_offset(skb) + ntohs(iph->tot_len); in ip_mc_check_iphdr()
1512 if (skb->len < len || len < offset) in ip_mc_check_iphdr()
1513 return -EINVAL; in ip_mc_check_iphdr()
1526 return ip_mc_may_pull(skb, len) ? 0 : -EINVAL; in ip_mc_check_igmp_reportv3()
1538 return -EINVAL; in ip_mc_check_igmp_query()
1542 return -EINVAL; in ip_mc_check_igmp_query()
1546 * all-systems destination addresses (224.0.0.1) for general queries in ip_mc_check_igmp_query()
1548 if (!igmp_hdr(skb)->group && in ip_mc_check_igmp_query()
1549 ip_hdr(skb)->daddr != htonl(INADDR_ALLHOSTS_GROUP)) in ip_mc_check_igmp_query()
1550 return -EINVAL; in ip_mc_check_igmp_query()
1557 switch (igmp_hdr(skb)->type) { in ip_mc_check_igmp_msg()
1567 return -ENOMSG; in ip_mc_check_igmp_msg()
1583 return -EINVAL; in ip_mc_check_igmp_csum()
1588 return -EINVAL; in ip_mc_check_igmp_csum()
1597 * ip_mc_check_igmp - checks whether this is a sane IGMP packet
1603 * -EINVAL: A broken packet was detected, i.e. it violates some internet
1605 * -ENOMSG: IP header validation succeeded but it is not an IGMP packet.
1606 * -ENOMEM: A memory allocation failure happened.
1618 if (ip_hdr(skb)->protocol != IPPROTO_IGMP) in ip_mc_check_igmp()
1619 return -ENOMSG; in ip_mc_check_igmp()
1637 struct net *net = dev_net(in_dev->dev); in ip_mc_rejoin_groups()
1642 if (im->multiaddr == IGMP_ALL_HOSTS) in ip_mc_rejoin_groups()
1644 if (ipv4_is_local_multicast(im->multiaddr) && in ip_mc_rejoin_groups()
1645 !net->ipv4.sysctl_igmp_llm_reports) in ip_mc_rejoin_groups()
1663 * A socket has left a multicast group on device dev
1673 for (ip = &in_dev->mc_list; in __ip_mc_dec_group()
1675 ip = &i->next_rcu) { in __ip_mc_dec_group()
1676 if (i->multiaddr == addr) { in __ip_mc_dec_group()
1677 if (--i->users == 0) { in __ip_mc_dec_group()
1679 *ip = i->next_rcu; in __ip_mc_dec_group()
1680 in_dev->mc_count--; in __ip_mc_dec_group()
1684 if (!in_dev->dead) in __ip_mc_dec_group()
1734 WRITE_ONCE(in_dev->mr_ifc_count, 0); in ip_mc_down()
1735 if (del_timer(&in_dev->mr_ifc_timer)) in ip_mc_down()
1737 in_dev->mr_gq_running = 0; in ip_mc_down()
1738 if (del_timer(&in_dev->mr_gq_timer)) in ip_mc_down()
1748 struct net *net = dev_net(in_dev->dev); in ip_mc_reset()
1750 in_dev->mr_qi = IGMP_QUERY_INTERVAL; in ip_mc_reset()
1751 in_dev->mr_qri = IGMP_QUERY_RESPONSE_INTERVAL; in ip_mc_reset()
1752 in_dev->mr_qrv = net->ipv4.sysctl_igmp_qrv; in ip_mc_reset()
1765 timer_setup(&in_dev->mr_gq_timer, igmp_gq_timer_expire, 0); in ip_mc_init_dev()
1766 timer_setup(&in_dev->mr_ifc_timer, igmp_ifc_timer_expire, 0); in ip_mc_init_dev()
1770 spin_lock_init(&in_dev->mc_tomb_lock); in ip_mc_init_dev()
1808 while ((i = rtnl_dereference(in_dev->mc_list)) != NULL) { in ip_mc_destroy_dev()
1809 in_dev->mc_list = i->next_rcu; in ip_mc_destroy_dev()
1810 in_dev->mc_count--; in ip_mc_destroy_dev()
1822 if (imr->imr_ifindex) { in ip_mc_find_dev()
1823 idev = inetdev_by_index(net, imr->imr_ifindex); in ip_mc_find_dev()
1826 if (imr->imr_address.s_addr) { in ip_mc_find_dev()
1827 dev = __ip_dev_find(net, imr->imr_address.s_addr, false); in ip_mc_find_dev()
1834 imr->imr_multiaddr.s_addr, in ip_mc_find_dev()
1837 dev = rt->dst.dev; in ip_mc_find_dev()
1842 imr->imr_ifindex = dev->ifindex; in ip_mc_find_dev()
1849 * Join a socket to a group
1859 for (psf = pmc->sources; psf; psf = psf->sf_next) { in ip_mc_del1_src()
1860 if (psf->sf_inaddr == *psfsrc) in ip_mc_del1_src()
1864 if (!psf || psf->sf_count[sfmode] == 0) { in ip_mc_del1_src()
1866 return -ESRCH; in ip_mc_del1_src()
1868 psf->sf_count[sfmode]--; in ip_mc_del1_src()
1869 if (psf->sf_count[sfmode] == 0) { in ip_mc_del1_src()
1870 ip_rt_multicast_event(pmc->interface); in ip_mc_del1_src()
1872 if (!psf->sf_count[MCAST_INCLUDE] && !psf->sf_count[MCAST_EXCLUDE]) { in ip_mc_del1_src()
1874 struct in_device *in_dev = pmc->interface; in ip_mc_del1_src()
1875 struct net *net = dev_net(in_dev->dev); in ip_mc_del1_src()
1880 psf_prev->sf_next = psf->sf_next; in ip_mc_del1_src()
1882 pmc->sources = psf->sf_next; in ip_mc_del1_src()
1884 if (psf->sf_oldin && in ip_mc_del1_src()
1886 psf->sf_crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in ip_mc_del1_src()
1887 psf->sf_next = pmc->tomb; in ip_mc_del1_src()
1888 pmc->tomb = psf; in ip_mc_del1_src()
1909 return -ENODEV; in ip_mc_del_src()
1912 if (*pmca == pmc->multiaddr) in ip_mc_del_src()
1918 return -ESRCH; in ip_mc_del_src()
1920 spin_lock_bh(&pmc->lock); in ip_mc_del_src()
1926 err = -EINVAL; in ip_mc_del_src()
1927 if (!pmc->sfcount[sfmode]) in ip_mc_del_src()
1929 pmc->sfcount[sfmode]--; in ip_mc_del_src()
1939 if (pmc->sfmode == MCAST_EXCLUDE && in ip_mc_del_src()
1940 pmc->sfcount[MCAST_EXCLUDE] == 0 && in ip_mc_del_src()
1941 pmc->sfcount[MCAST_INCLUDE]) { in ip_mc_del_src()
1944 struct net *net = dev_net(in_dev->dev); in ip_mc_del_src()
1948 pmc->sfmode = MCAST_INCLUDE; in ip_mc_del_src()
1950 pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in ip_mc_del_src()
1951 WRITE_ONCE(in_dev->mr_ifc_count, pmc->crcount); in ip_mc_del_src()
1952 for (psf = pmc->sources; psf; psf = psf->sf_next) in ip_mc_del_src()
1953 psf->sf_crcount = 0; in ip_mc_del_src()
1954 igmp_ifc_event(pmc->interface); in ip_mc_del_src()
1956 igmp_ifc_event(pmc->interface); in ip_mc_del_src()
1960 spin_unlock_bh(&pmc->lock); in ip_mc_del_src()
1965 * Add multicast single-source filter to the interface list
1973 for (psf = pmc->sources; psf; psf = psf->sf_next) { in ip_mc_add1_src()
1974 if (psf->sf_inaddr == *psfsrc) in ip_mc_add1_src()
1981 return -ENOBUFS; in ip_mc_add1_src()
1982 psf->sf_inaddr = *psfsrc; in ip_mc_add1_src()
1984 psf_prev->sf_next = psf; in ip_mc_add1_src()
1986 pmc->sources = psf; in ip_mc_add1_src()
1988 psf->sf_count[sfmode]++; in ip_mc_add1_src()
1989 if (psf->sf_count[sfmode] == 1) { in ip_mc_add1_src()
1990 ip_rt_multicast_event(pmc->interface); in ip_mc_add1_src()
1999 int mca_xcount = pmc->sfcount[MCAST_EXCLUDE]; in sf_markstate()
2001 for (psf = pmc->sources; psf; psf = psf->sf_next) in sf_markstate()
2002 if (pmc->sfcount[MCAST_EXCLUDE]) { in sf_markstate()
2003 psf->sf_oldin = mca_xcount == in sf_markstate()
2004 psf->sf_count[MCAST_EXCLUDE] && in sf_markstate()
2005 !psf->sf_count[MCAST_INCLUDE]; in sf_markstate()
2007 psf->sf_oldin = psf->sf_count[MCAST_INCLUDE] != 0; in sf_markstate()
2013 int mca_xcount = pmc->sfcount[MCAST_EXCLUDE]; in sf_setstate()
2014 int qrv = pmc->interface->mr_qrv; in sf_setstate()
2018 for (psf = pmc->sources; psf; psf = psf->sf_next) { in sf_setstate()
2019 if (pmc->sfcount[MCAST_EXCLUDE]) { in sf_setstate()
2020 new_in = mca_xcount == psf->sf_count[MCAST_EXCLUDE] && in sf_setstate()
2021 !psf->sf_count[MCAST_INCLUDE]; in sf_setstate()
2023 new_in = psf->sf_count[MCAST_INCLUDE] != 0; in sf_setstate()
2025 if (!psf->sf_oldin) { in sf_setstate()
2028 for (dpsf = pmc->tomb; dpsf; dpsf = dpsf->sf_next) { in sf_setstate()
2029 if (dpsf->sf_inaddr == psf->sf_inaddr) in sf_setstate()
2035 prev->sf_next = dpsf->sf_next; in sf_setstate()
2037 pmc->tomb = dpsf->sf_next; in sf_setstate()
2040 psf->sf_crcount = qrv; in sf_setstate()
2043 } else if (psf->sf_oldin) { in sf_setstate()
2045 psf->sf_crcount = 0; in sf_setstate()
2050 for (dpsf = pmc->tomb; dpsf; dpsf = dpsf->sf_next) in sf_setstate()
2051 if (dpsf->sf_inaddr == psf->sf_inaddr) in sf_setstate()
2058 /* pmc->lock held by callers */ in sf_setstate()
2059 dpsf->sf_next = pmc->tomb; in sf_setstate()
2060 pmc->tomb = dpsf; in sf_setstate()
2062 dpsf->sf_crcount = qrv; in sf_setstate()
2081 return -ENODEV; in ip_mc_add_src()
2084 if (*pmca == pmc->multiaddr) in ip_mc_add_src()
2090 return -ESRCH; in ip_mc_add_src()
2092 spin_lock_bh(&pmc->lock); in ip_mc_add_src()
2098 isexclude = pmc->sfmode == MCAST_EXCLUDE; in ip_mc_add_src()
2100 pmc->sfcount[sfmode]++; in ip_mc_add_src()
2111 pmc->sfcount[sfmode]--; in ip_mc_add_src()
2114 } else if (isexclude != (pmc->sfcount[MCAST_EXCLUDE] != 0)) { in ip_mc_add_src()
2117 struct net *net = dev_net(pmc->interface->dev); in ip_mc_add_src()
2118 in_dev = pmc->interface; in ip_mc_add_src()
2122 if (pmc->sfcount[MCAST_EXCLUDE]) in ip_mc_add_src()
2123 pmc->sfmode = MCAST_EXCLUDE; in ip_mc_add_src()
2124 else if (pmc->sfcount[MCAST_INCLUDE]) in ip_mc_add_src()
2125 pmc->sfmode = MCAST_INCLUDE; in ip_mc_add_src()
2129 pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv; in ip_mc_add_src()
2130 WRITE_ONCE(in_dev->mr_ifc_count, pmc->crcount); in ip_mc_add_src()
2131 for (psf = pmc->sources; psf; psf = psf->sf_next) in ip_mc_add_src()
2132 psf->sf_crcount = 0; in ip_mc_add_src()
2138 spin_unlock_bh(&pmc->lock); in ip_mc_add_src()
2146 spin_lock_bh(&pmc->lock); in ip_mc_clear_src()
2147 tomb = pmc->tomb; in ip_mc_clear_src()
2148 pmc->tomb = NULL; in ip_mc_clear_src()
2149 sources = pmc->sources; in ip_mc_clear_src()
2150 pmc->sources = NULL; in ip_mc_clear_src()
2151 pmc->sfmode = MCAST_EXCLUDE; in ip_mc_clear_src()
2152 pmc->sfcount[MCAST_INCLUDE] = 0; in ip_mc_clear_src()
2153 pmc->sfcount[MCAST_EXCLUDE] = 1; in ip_mc_clear_src()
2154 spin_unlock_bh(&pmc->lock); in ip_mc_clear_src()
2165 __be32 addr = imr->imr_multiaddr.s_addr; in __ip_mc_join_group()
2177 return -EINVAL; in __ip_mc_join_group()
2182 err = -ENODEV; in __ip_mc_join_group()
2186 err = -EADDRINUSE; in __ip_mc_join_group()
2187 ifindex = imr->imr_ifindex; in __ip_mc_join_group()
2189 if (i->multi.imr_multiaddr.s_addr == addr && in __ip_mc_join_group()
2190 i->multi.imr_ifindex == ifindex) in __ip_mc_join_group()
2194 err = -ENOBUFS; in __ip_mc_join_group()
2195 if (count >= net->ipv4.sysctl_igmp_max_memberships) in __ip_mc_join_group()
2201 memcpy(&iml->multi, imr, sizeof(*imr)); in __ip_mc_join_group()
2202 iml->next_rcu = inet->mc_list; in __ip_mc_join_group()
2203 iml->sflist = NULL; in __ip_mc_join_group()
2204 iml->sfmode = mode; in __ip_mc_join_group()
2205 rcu_assign_pointer(inet->mc_list, iml); in __ip_mc_join_group()
2212 /* Join ASM (Any-Source Multicast) group
2220 /* Join SSM (Source-Specific Multicast) group
2231 struct ip_sf_socklist *psf = rtnl_dereference(iml->sflist); in ip_mc_leave_src()
2235 /* any-source empty exclude case */ in ip_mc_leave_src()
2236 return ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr, in ip_mc_leave_src()
2237 iml->sfmode, 0, NULL, 0); in ip_mc_leave_src()
2239 err = ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr, in ip_mc_leave_src()
2240 iml->sfmode, psf->sl_count, psf->sl_addr, 0); in ip_mc_leave_src()
2241 RCU_INIT_POINTER(iml->sflist, NULL); in ip_mc_leave_src()
2243 atomic_sub(IP_SFLSIZE(psf->sl_max), &sk->sk_omem_alloc); in ip_mc_leave_src()
2255 __be32 group = imr->imr_multiaddr.s_addr; in ip_mc_leave_group()
2257 int ret = -EADDRNOTAVAIL; in ip_mc_leave_group()
2262 if (!imr->imr_ifindex && !imr->imr_address.s_addr && !in_dev) { in ip_mc_leave_group()
2263 ret = -ENODEV; in ip_mc_leave_group()
2266 ifindex = imr->imr_ifindex; in ip_mc_leave_group()
2267 for (imlp = &inet->mc_list; in ip_mc_leave_group()
2269 imlp = &iml->next_rcu) { in ip_mc_leave_group()
2270 if (iml->multi.imr_multiaddr.s_addr != group) in ip_mc_leave_group()
2273 if (iml->multi.imr_ifindex != ifindex) in ip_mc_leave_group()
2275 } else if (imr->imr_address.s_addr && imr->imr_address.s_addr != in ip_mc_leave_group()
2276 iml->multi.imr_address.s_addr) in ip_mc_leave_group()
2281 *imlp = iml->next_rcu; in ip_mc_leave_group()
2287 atomic_sub(sizeof(*iml), &sk->sk_omem_alloc); in ip_mc_leave_group()
2301 __be32 addr = mreqs->imr_multiaddr; in ip_mc_source()
2311 return -EINVAL; in ip_mc_source()
2315 imr.imr_multiaddr.s_addr = mreqs->imr_multiaddr; in ip_mc_source()
2316 imr.imr_address.s_addr = mreqs->imr_interface; in ip_mc_source()
2321 err = -ENODEV; in ip_mc_source()
2324 err = -EADDRNOTAVAIL; in ip_mc_source()
2327 if ((pmc->multi.imr_multiaddr.s_addr == in ip_mc_source()
2329 (pmc->multi.imr_ifindex == imr.imr_ifindex)) in ip_mc_source()
2333 err = -EINVAL; in ip_mc_source()
2337 if (pmc->sflist) { in ip_mc_source()
2338 if (pmc->sfmode != omode) { in ip_mc_source()
2339 err = -EINVAL; in ip_mc_source()
2342 } else if (pmc->sfmode != omode) { in ip_mc_source()
2343 /* allow mode switches for empty-set filters */ in ip_mc_source()
2344 ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 0, NULL, 0); in ip_mc_source()
2345 ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, pmc->sfmode, 0, in ip_mc_source()
2347 pmc->sfmode = omode; in ip_mc_source()
2350 psl = rtnl_dereference(pmc->sflist); in ip_mc_source()
2353 goto done; /* err = -EADDRNOTAVAIL */ in ip_mc_source()
2355 for (i = 0; i < psl->sl_count; i++) { in ip_mc_source()
2356 rv = memcmp(&psl->sl_addr[i], &mreqs->imr_sourceaddr, in ip_mc_source()
2362 goto done; /* err = -EADDRNOTAVAIL */ in ip_mc_source()
2364 /* special case - (INCLUDE, empty) == LEAVE_GROUP */ in ip_mc_source()
2365 if (psl->sl_count == 1 && omode == MCAST_INCLUDE) { in ip_mc_source()
2371 ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, omode, 1, in ip_mc_source()
2372 &mreqs->imr_sourceaddr, 1); in ip_mc_source()
2374 for (j = i+1; j < psl->sl_count; j++) in ip_mc_source()
2375 psl->sl_addr[j-1] = psl->sl_addr[j]; in ip_mc_source()
2376 psl->sl_count--; in ip_mc_source()
2382 if (psl && psl->sl_count >= net->ipv4.sysctl_igmp_max_msf) { in ip_mc_source()
2383 err = -ENOBUFS; in ip_mc_source()
2386 if (!psl || psl->sl_count == psl->sl_max) { in ip_mc_source()
2391 count += psl->sl_max; in ip_mc_source()
2394 err = -ENOBUFS; in ip_mc_source()
2397 newpsl->sl_max = count; in ip_mc_source()
2398 newpsl->sl_count = count - IP_SFBLOCK; in ip_mc_source()
2400 for (i = 0; i < psl->sl_count; i++) in ip_mc_source()
2401 newpsl->sl_addr[i] = psl->sl_addr[i]; in ip_mc_source()
2403 atomic_sub(IP_SFLSIZE(psl->sl_max), &sk->sk_omem_alloc); in ip_mc_source()
2406 rcu_assign_pointer(pmc->sflist, newpsl); in ip_mc_source()
2410 for (i = 0; i < psl->sl_count; i++) { in ip_mc_source()
2411 rv = memcmp(&psl->sl_addr[i], &mreqs->imr_sourceaddr, in ip_mc_source()
2418 for (j = psl->sl_count-1; j >= i; j--) in ip_mc_source()
2419 psl->sl_addr[j+1] = psl->sl_addr[j]; in ip_mc_source()
2420 psl->sl_addr[i] = mreqs->imr_sourceaddr; in ip_mc_source()
2421 psl->sl_count++; in ip_mc_source()
2424 ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 1, in ip_mc_source()
2425 &mreqs->imr_sourceaddr, 1); in ip_mc_source()
2436 __be32 addr = msf->imsf_multiaddr; in ip_mc_msfilter()
2445 return -EINVAL; in ip_mc_msfilter()
2446 if (msf->imsf_fmode != MCAST_INCLUDE && in ip_mc_msfilter()
2447 msf->imsf_fmode != MCAST_EXCLUDE) in ip_mc_msfilter()
2448 return -EINVAL; in ip_mc_msfilter()
2452 imr.imr_multiaddr.s_addr = msf->imsf_multiaddr; in ip_mc_msfilter()
2453 imr.imr_address.s_addr = msf->imsf_interface; in ip_mc_msfilter()
2458 err = -ENODEV; in ip_mc_msfilter()
2462 /* special case - (INCLUDE, empty) == LEAVE_GROUP */ in ip_mc_msfilter()
2463 if (msf->imsf_fmode == MCAST_INCLUDE && msf->imsf_numsrc == 0) { in ip_mc_msfilter()
2469 if (pmc->multi.imr_multiaddr.s_addr == msf->imsf_multiaddr && in ip_mc_msfilter()
2470 pmc->multi.imr_ifindex == imr.imr_ifindex) in ip_mc_msfilter()
2474 err = -EINVAL; in ip_mc_msfilter()
2477 if (msf->imsf_numsrc) { in ip_mc_msfilter()
2478 newpsl = sock_kmalloc(sk, IP_SFLSIZE(msf->imsf_numsrc), in ip_mc_msfilter()
2481 err = -ENOBUFS; in ip_mc_msfilter()
2484 newpsl->sl_max = newpsl->sl_count = msf->imsf_numsrc; in ip_mc_msfilter()
2485 memcpy(newpsl->sl_addr, msf->imsf_slist, in ip_mc_msfilter()
2486 msf->imsf_numsrc * sizeof(msf->imsf_slist[0])); in ip_mc_msfilter()
2487 err = ip_mc_add_src(in_dev, &msf->imsf_multiaddr, in ip_mc_msfilter()
2488 msf->imsf_fmode, newpsl->sl_count, newpsl->sl_addr, 0); in ip_mc_msfilter()
2490 sock_kfree_s(sk, newpsl, IP_SFLSIZE(newpsl->sl_max)); in ip_mc_msfilter()
2495 (void) ip_mc_add_src(in_dev, &msf->imsf_multiaddr, in ip_mc_msfilter()
2496 msf->imsf_fmode, 0, NULL, 0); in ip_mc_msfilter()
2498 psl = rtnl_dereference(pmc->sflist); in ip_mc_msfilter()
2500 (void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode, in ip_mc_msfilter()
2501 psl->sl_count, psl->sl_addr, 0); in ip_mc_msfilter()
2503 atomic_sub(IP_SFLSIZE(psl->sl_max), &sk->sk_omem_alloc); in ip_mc_msfilter()
2506 (void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode, in ip_mc_msfilter()
2508 rcu_assign_pointer(pmc->sflist, newpsl); in ip_mc_msfilter()
2509 pmc->sfmode = msf->imsf_fmode; in ip_mc_msfilter()
2522 __be32 addr = msf->imsf_multiaddr; in ip_mc_msfget()
2532 return -EINVAL; in ip_mc_msfget()
2534 imr.imr_multiaddr.s_addr = msf->imsf_multiaddr; in ip_mc_msfget()
2535 imr.imr_address.s_addr = msf->imsf_interface; in ip_mc_msfget()
2540 err = -ENODEV; in ip_mc_msfget()
2543 err = -EADDRNOTAVAIL; in ip_mc_msfget()
2546 if (pmc->multi.imr_multiaddr.s_addr == msf->imsf_multiaddr && in ip_mc_msfget()
2547 pmc->multi.imr_ifindex == imr.imr_ifindex) in ip_mc_msfget()
2552 msf->imsf_fmode = pmc->sfmode; in ip_mc_msfget()
2553 psl = rtnl_dereference(pmc->sflist); in ip_mc_msfget()
2558 count = psl->sl_count; in ip_mc_msfget()
2560 copycount = count < msf->imsf_numsrc ? count : msf->imsf_numsrc; in ip_mc_msfget()
2561 len = copycount * sizeof(psl->sl_addr[0]); in ip_mc_msfget()
2562 msf->imsf_numsrc = count; in ip_mc_msfget()
2565 return -EFAULT; in ip_mc_msfget()
2568 copy_to_user(&optval->imsf_slist[0], psl->sl_addr, len)) in ip_mc_msfget()
2569 return -EFAULT; in ip_mc_msfget()
2587 psin = (struct sockaddr_in *)&gsf->gf_group; in ip_mc_gsfget()
2588 if (psin->sin_family != AF_INET) in ip_mc_gsfget()
2589 return -EINVAL; in ip_mc_gsfget()
2590 addr = psin->sin_addr.s_addr; in ip_mc_gsfget()
2592 return -EINVAL; in ip_mc_gsfget()
2595 if (pmc->multi.imr_multiaddr.s_addr == addr && in ip_mc_gsfget()
2596 pmc->multi.imr_ifindex == gsf->gf_interface) in ip_mc_gsfget()
2600 return -EADDRNOTAVAIL; in ip_mc_gsfget()
2601 gsf->gf_fmode = pmc->sfmode; in ip_mc_gsfget()
2602 psl = rtnl_dereference(pmc->sflist); in ip_mc_gsfget()
2603 count = psl ? psl->sl_count : 0; in ip_mc_gsfget()
2604 copycount = count < gsf->gf_numsrc ? count : gsf->gf_numsrc; in ip_mc_gsfget()
2605 gsf->gf_numsrc = count; in ip_mc_gsfget()
2611 psin->sin_family = AF_INET; in ip_mc_gsfget()
2612 psin->sin_addr.s_addr = psl->sl_addr[i]; in ip_mc_gsfget()
2614 return -EFAULT; in ip_mc_gsfget()
2637 if (pmc->multi.imr_multiaddr.s_addr == loc_addr && in ip_mc_sf_allow()
2638 (pmc->multi.imr_ifindex == dif || in ip_mc_sf_allow()
2639 (sdif && pmc->multi.imr_ifindex == sdif))) in ip_mc_sf_allow()
2642 ret = inet->mc_all; in ip_mc_sf_allow()
2645 psl = rcu_dereference(pmc->sflist); in ip_mc_sf_allow()
2646 ret = (pmc->sfmode == MCAST_EXCLUDE); in ip_mc_sf_allow()
2650 for (i = 0; i < psl->sl_count; i++) { in ip_mc_sf_allow()
2651 if (psl->sl_addr[i] == rmt_addr) in ip_mc_sf_allow()
2655 if (pmc->sfmode == MCAST_INCLUDE && i >= psl->sl_count) in ip_mc_sf_allow()
2657 if (pmc->sfmode == MCAST_EXCLUDE && i < psl->sl_count) in ip_mc_sf_allow()
2667 * A socket is closing.
2676 if (!inet->mc_list) in ip_mc_drop_socket()
2680 while ((iml = rtnl_dereference(inet->mc_list)) != NULL) { in ip_mc_drop_socket()
2683 inet->mc_list = iml->next_rcu; in ip_mc_drop_socket()
2684 in_dev = inetdev_by_index(net, iml->multi.imr_ifindex); in ip_mc_drop_socket()
2687 ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr); in ip_mc_drop_socket()
2689 atomic_sub(sizeof(*iml), &sk->sk_omem_alloc); in ip_mc_drop_socket()
2703 mc_hash = rcu_dereference(in_dev->mc_hash); in ip_check_mc_rcu()
2709 im = rcu_dereference(im->next_hash)) { in ip_check_mc_rcu()
2710 if (im->multiaddr == mc_addr) in ip_check_mc_rcu()
2715 if (im->multiaddr == mc_addr) in ip_check_mc_rcu()
2723 spin_lock_bh(&im->lock); in ip_check_mc_rcu()
2724 for (psf = im->sources; psf; psf = psf->sf_next) { in ip_check_mc_rcu()
2725 if (psf->sf_inaddr == src_addr) in ip_check_mc_rcu()
2729 rv = psf->sf_count[MCAST_INCLUDE] || in ip_check_mc_rcu()
2730 psf->sf_count[MCAST_EXCLUDE] != in ip_check_mc_rcu()
2731 im->sfcount[MCAST_EXCLUDE]; in ip_check_mc_rcu()
2733 rv = im->sfcount[MCAST_EXCLUDE] != 0; in ip_check_mc_rcu()
2734 spin_unlock_bh(&im->lock); in ip_check_mc_rcu()
2748 #define igmp_mc_seq_private(seq) ((struct igmp_mc_iter_state *)(seq)->private)
2756 state->in_dev = NULL; in igmp_mc_get_first()
2757 for_each_netdev_rcu(net, state->dev) { in igmp_mc_get_first()
2760 in_dev = __in_dev_get_rcu(state->dev); in igmp_mc_get_first()
2763 im = rcu_dereference(in_dev->mc_list); in igmp_mc_get_first()
2765 state->in_dev = in_dev; in igmp_mc_get_first()
2776 im = rcu_dereference(im->next_rcu); in igmp_mc_get_next()
2778 state->dev = next_net_device_rcu(state->dev); in igmp_mc_get_next()
2779 if (!state->dev) { in igmp_mc_get_next()
2780 state->in_dev = NULL; in igmp_mc_get_next()
2783 state->in_dev = __in_dev_get_rcu(state->dev); in igmp_mc_get_next()
2784 if (!state->in_dev) in igmp_mc_get_next()
2786 im = rcu_dereference(state->in_dev->mc_list); in igmp_mc_get_next()
2796 --pos; in igmp_mc_get_idx()
2804 return *pos ? igmp_mc_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; in igmp_mc_seq_start()
2823 state->in_dev = NULL; in igmp_mc_seq_stop()
2824 state->dev = NULL; in igmp_mc_seq_stop()
2840 querier = IGMP_V1_SEEN(state->in_dev) ? "V1" : in igmp_mc_seq_show()
2841 IGMP_V2_SEEN(state->in_dev) ? "V2" : in igmp_mc_seq_show()
2847 if (rcu_access_pointer(state->in_dev->mc_list) == im) { in igmp_mc_seq_show()
2848 seq_printf(seq, "%d\t%-10s: %5d %7s\n", in igmp_mc_seq_show()
2849 state->dev->ifindex, state->dev->name, state->in_dev->mc_count, querier); in igmp_mc_seq_show()
2852 delta = im->timer.expires - jiffies; in igmp_mc_seq_show()
2855 im->multiaddr, im->users, in igmp_mc_seq_show()
2856 im->tm_running, in igmp_mc_seq_show()
2857 im->tm_running ? jiffies_delta_to_clock_t(delta) : 0, in igmp_mc_seq_show()
2858 im->reporter); in igmp_mc_seq_show()
2877 #define igmp_mcf_seq_private(seq) ((struct igmp_mcf_iter_state *)(seq)->private)
2886 state->idev = NULL; in igmp_mcf_get_first()
2887 state->im = NULL; in igmp_mcf_get_first()
2888 for_each_netdev_rcu(net, state->dev) { in igmp_mcf_get_first()
2890 idev = __in_dev_get_rcu(state->dev); in igmp_mcf_get_first()
2893 im = rcu_dereference(idev->mc_list); in igmp_mcf_get_first()
2895 spin_lock_bh(&im->lock); in igmp_mcf_get_first()
2896 psf = im->sources; in igmp_mcf_get_first()
2898 state->im = im; in igmp_mcf_get_first()
2899 state->idev = idev; in igmp_mcf_get_first()
2902 spin_unlock_bh(&im->lock); in igmp_mcf_get_first()
2912 psf = psf->sf_next; in igmp_mcf_get_next()
2914 spin_unlock_bh(&state->im->lock); in igmp_mcf_get_next()
2915 state->im = state->im->next; in igmp_mcf_get_next()
2916 while (!state->im) { in igmp_mcf_get_next()
2917 state->dev = next_net_device_rcu(state->dev); in igmp_mcf_get_next()
2918 if (!state->dev) { in igmp_mcf_get_next()
2919 state->idev = NULL; in igmp_mcf_get_next()
2922 state->idev = __in_dev_get_rcu(state->dev); in igmp_mcf_get_next()
2923 if (!state->idev) in igmp_mcf_get_next()
2925 state->im = rcu_dereference(state->idev->mc_list); in igmp_mcf_get_next()
2927 if (!state->im) in igmp_mcf_get_next()
2929 spin_lock_bh(&state->im->lock); in igmp_mcf_get_next()
2930 psf = state->im->sources; in igmp_mcf_get_next()
2941 --pos; in igmp_mcf_get_idx()
2949 return *pos ? igmp_mcf_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; in igmp_mcf_seq_start()
2967 if (likely(state->im)) { in igmp_mcf_seq_stop()
2968 spin_unlock_bh(&state->im->lock); in igmp_mcf_seq_stop()
2969 state->im = NULL; in igmp_mcf_seq_stop()
2971 state->idev = NULL; in igmp_mcf_seq_stop()
2972 state->dev = NULL; in igmp_mcf_seq_stop()
2987 state->dev->ifindex, state->dev->name, in igmp_mcf_seq_show()
2988 ntohl(state->im->multiaddr), in igmp_mcf_seq_show()
2989 ntohl(psf->sf_inaddr), in igmp_mcf_seq_show()
2990 psf->sf_count[MCAST_INCLUDE], in igmp_mcf_seq_show()
2991 psf->sf_count[MCAST_EXCLUDE]); in igmp_mcf_seq_show()
3008 pde = proc_create_net("igmp", 0444, net->proc_net, &igmp_mc_seq_ops, in igmp_net_init()
3012 pde = proc_create_net("mcfilter", 0444, net->proc_net, in igmp_net_init()
3016 err = inet_ctl_sock_create(&net->ipv4.mc_autojoin_sk, AF_INET, in igmp_net_init()
3019 pr_err("Failed to initialize the IGMP autojoin socket (err %d)\n", in igmp_net_init()
3027 remove_proc_entry("mcfilter", net->proc_net); in igmp_net_init()
3029 remove_proc_entry("igmp", net->proc_net); in igmp_net_init()
3031 return -ENOMEM; in igmp_net_init()
3036 remove_proc_entry("mcfilter", net->proc_net); in igmp_net_exit()
3037 remove_proc_entry("igmp", net->proc_net); in igmp_net_exit()
3038 inet_ctl_sock_destroy(net->ipv4.mc_autojoin_sk); in igmp_net_exit()