diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_multicast.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index bce5560709d1..6cfac6cbaf3b 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1663,6 +1663,95 @@ static bool br_multicast_toex(struct net_bridge_port_group *pg, return changed; } +/* State Msg type New state Actions + * INCLUDE (A) BLOCK (B) INCLUDE (A) Send Q(G,A*B) + */ +static void __grp_src_block_incl(struct net_bridge_port_group *pg, + void *srcs, u32 nsrcs, size_t src_size) +{ + struct net_bridge_group_src *ent; + u32 src_idx, to_send = 0; + struct br_ip src_ip; + + hlist_for_each_entry(ent, &pg->src_list, node) + ent->flags &= ~BR_SGRP_F_SEND; + + memset(&src_ip, 0, sizeof(src_ip)); + src_ip.proto = pg->addr.proto; + for (src_idx = 0; src_idx < nsrcs; src_idx++) { + memcpy(&src_ip.u, srcs, src_size); + ent = br_multicast_find_group_src(pg, &src_ip); + if (ent) { + ent->flags |= BR_SGRP_F_SEND; + to_send++; + } + srcs += src_size; + } + + if (to_send) + __grp_src_query_marked_and_rexmit(pg); + + if (pg->filter_mode == MCAST_INCLUDE && hlist_empty(&pg->src_list)) + br_multicast_find_del_pg(pg->port->br, pg); +} + +/* State Msg type New state Actions + * EXCLUDE (X,Y) BLOCK (A) EXCLUDE (X+(A-Y),Y) (A-X-Y)=Group Timer + * Send Q(G,A-Y) + */ +static bool __grp_src_block_excl(struct net_bridge_port_group *pg, + void *srcs, u32 nsrcs, size_t src_size) +{ + struct net_bridge_group_src *ent; + u32 src_idx, to_send = 0; + bool changed = false; + struct br_ip src_ip; + + hlist_for_each_entry(ent, &pg->src_list, node) + ent->flags &= ~BR_SGRP_F_SEND; + + memset(&src_ip, 0, sizeof(src_ip)); + src_ip.proto = pg->addr.proto; + for (src_idx = 0; src_idx < nsrcs; src_idx++) { + memcpy(&src_ip.u, srcs, src_size); + ent = br_multicast_find_group_src(pg, &src_ip); + if (!ent) { + ent = br_multicast_new_group_src(pg, &src_ip); + if (ent) { + mod_timer(&ent->timer, pg->timer.expires); + changed = true; + } + } + if (ent && timer_pending(&ent->timer)) { + ent->flags |= BR_SGRP_F_SEND; + to_send++; + } + srcs += src_size; + } + + if (to_send) + __grp_src_query_marked_and_rexmit(pg); + + return changed; +} + +static bool br_multicast_block(struct net_bridge_port_group *pg, + void *srcs, u32 nsrcs, size_t src_size) +{ + bool changed = false; + + switch (pg->filter_mode) { + case MCAST_INCLUDE: + __grp_src_block_incl(pg, srcs, nsrcs, src_size); + break; + case MCAST_EXCLUDE: + changed = __grp_src_block_excl(pg, srcs, nsrcs, src_size); + break; + } + + return changed; +} + static struct net_bridge_port_group * br_multicast_find_port(struct net_bridge_mdb_entry *mp, struct net_bridge_port *p, @@ -1776,6 +1865,10 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br, changed = br_multicast_toex(pg, grec->grec_src, nsrcs, sizeof(__be32)); break; + case IGMPV3_BLOCK_OLD_SOURCES: + changed = br_multicast_block(pg, grec->grec_src, nsrcs, + sizeof(__be32)); + break; } if (changed) br_mdb_notify(br->dev, mdst, pg, RTM_NEWMDB); @@ -1898,6 +1991,10 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br, changed = br_multicast_toex(pg, grec->grec_src, nsrcs, sizeof(struct in6_addr)); break; + case MLD2_BLOCK_OLD_SOURCES: + changed = br_multicast_block(pg, grec->grec_src, nsrcs, + sizeof(struct in6_addr)); + break; } if (changed) br_mdb_notify(br->dev, mdst, pg, RTM_NEWMDB); |