diff options
Diffstat (limited to 'net/bridge/br_multicast.c')
-rw-r--r-- | net/bridge/br_multicast.c | 75 |
1 files changed, 45 insertions, 30 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 81f2389..31952a1 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -23,6 +23,7 @@ #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/timer.h> +#include <linux/inetdevice.h> #include <net/ip.h> #if IS_ENABLED(CONFIG_IPV6) #include <net/ipv6.h> @@ -381,7 +382,8 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br, iph->frag_off = htons(IP_DF); iph->ttl = 1; iph->protocol = IPPROTO_IGMP; - iph->saddr = 0; + iph->saddr = br->multicast_query_use_ifaddr ? + inet_select_addr(br->dev, 0, RT_SCOPE_LINK) : 0; iph->daddr = htonl(INADDR_ALLHOSTS_GROUP); ((u8 *)&iph[1])[0] = IPOPT_RA; ((u8 *)&iph[1])[1] = 4; @@ -465,8 +467,9 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br, skb_set_transport_header(skb, skb->len); mldq = (struct mld_msg *) icmp6_hdr(skb); - interval = ipv6_addr_any(group) ? br->multicast_last_member_interval : - br->multicast_query_response_interval; + interval = ipv6_addr_any(group) ? + br->multicast_query_response_interval : + br->multicast_last_member_interval; mldq->mld_type = ICMPV6_MGM_QUERY; mldq->mld_code = 0; @@ -615,8 +618,6 @@ rehash: mp->br = br; mp->addr = *group; - setup_timer(&mp->timer, br_multicast_group_expired, - (unsigned long)mp); hlist_add_head_rcu(&mp->hlist[mdb->ver], &mdb->mhash[hash]); mdb->size++; @@ -654,7 +655,6 @@ static int br_multicast_add_group(struct net_bridge *br, struct net_bridge_mdb_entry *mp; struct net_bridge_port_group *p; struct net_bridge_port_group __rcu **pp; - unsigned long now = jiffies; int err; spin_lock(&br->multicast_lock); @@ -669,7 +669,6 @@ static int br_multicast_add_group(struct net_bridge *br, if (!port) { mp->mglist = true; - mod_timer(&mp->timer, now + br->multicast_membership_interval); goto out; } @@ -677,7 +676,7 @@ static int br_multicast_add_group(struct net_bridge *br, (p = mlock_dereference(*pp, br)) != NULL; pp = &p->next) { if (p->port == port) - goto found; + goto out; if ((unsigned long)p->port < (unsigned long)port) break; } @@ -688,8 +687,6 @@ static int br_multicast_add_group(struct net_bridge *br, rcu_assign_pointer(*pp, p); br_mdb_notify(br->dev, port, group, RTM_NEWMDB); -found: - mod_timer(&p->timer, now + br->multicast_membership_interval); out: err = 0; @@ -1129,6 +1126,10 @@ static int br_ip4_multicast_query(struct net_bridge *br, if (!mp) goto out; + setup_timer(&mp->timer, br_multicast_group_expired, (unsigned long)mp); + mod_timer(&mp->timer, now + br->multicast_membership_interval); + mp->timer_armed = true; + max_delay *= br->multicast_last_member_count; if (mp->mglist && @@ -1203,6 +1204,10 @@ static int br_ip6_multicast_query(struct net_bridge *br, if (!mp) goto out; + setup_timer(&mp->timer, br_multicast_group_expired, (unsigned long)mp); + mod_timer(&mp->timer, now + br->multicast_membership_interval); + mp->timer_armed = true; + max_delay *= br->multicast_last_member_count; if (mp->mglist && (timer_pending(&mp->timer) ? @@ -1246,6 +1251,32 @@ static void br_multicast_leave_group(struct net_bridge *br, if (!mp) goto out; + if (br->multicast_querier && + !timer_pending(&br->multicast_querier_timer)) { + __br_multicast_send_query(br, port, &mp->addr); + + time = jiffies + br->multicast_last_member_count * + br->multicast_last_member_interval; + mod_timer(port ? &port->multicast_query_timer : + &br->multicast_query_timer, time); + + for (p = mlock_dereference(mp->ports, br); + p != NULL; + p = mlock_dereference(p->next, br)) { + if (p->port != port) + continue; + + if (!hlist_unhashed(&p->mglist) && + (timer_pending(&p->timer) ? + time_after(p->timer.expires, time) : + try_to_del_timer_sync(&p->timer) >= 0)) { + mod_timer(&p->timer, time); + } + + break; + } + } + if (port && (port->flags & BR_MULTICAST_FAST_LEAVE)) { struct net_bridge_port_group __rcu **pp; @@ -1261,7 +1292,7 @@ static void br_multicast_leave_group(struct net_bridge *br, call_rcu_bh(&p->rcu, br_multicast_free_pg); br_mdb_notify(br->dev, port, group, RTM_DELMDB); - if (!mp->ports && !mp->mglist && + if (!mp->ports && !mp->mglist && mp->timer_armed && netif_running(br->dev)) mod_timer(&mp->timer, jiffies); } @@ -1273,30 +1304,12 @@ static void br_multicast_leave_group(struct net_bridge *br, br->multicast_last_member_interval; if (!port) { - if (mp->mglist && + if (mp->mglist && mp->timer_armed && (timer_pending(&mp->timer) ? time_after(mp->timer.expires, time) : try_to_del_timer_sync(&mp->timer) >= 0)) { mod_timer(&mp->timer, time); } - - goto out; - } - - for (p = mlock_dereference(mp->ports, br); - p != NULL; - p = mlock_dereference(p->next, br)) { - if (p->port != port) - continue; - - if (!hlist_unhashed(&p->mglist) && - (timer_pending(&p->timer) ? - time_after(p->timer.expires, time) : - try_to_del_timer_sync(&p->timer) >= 0)) { - mod_timer(&p->timer, time); - } - - break; } out: @@ -1618,6 +1631,7 @@ void br_multicast_init(struct net_bridge *br) br->multicast_router = 1; br->multicast_querier = 0; + br->multicast_query_use_ifaddr = 0; br->multicast_last_member_count = 2; br->multicast_startup_query_count = 2; @@ -1671,6 +1685,7 @@ void br_multicast_stop(struct net_bridge *br) hlist_for_each_entry_safe(mp, n, &mdb->mhash[i], hlist[ver]) { del_timer(&mp->timer); + mp->timer_armed = false; call_rcu_bh(&mp->rcu, br_multicast_free_group); } } |