diff options
| -rw-r--r-- | net/bridge/br_device.c | 2 | ||||
| -rw-r--r-- | net/bridge/br_input.c | 2 | ||||
| -rw-r--r-- | net/bridge/br_mdb.c | 14 | ||||
| -rw-r--r-- | net/bridge/br_multicast.c | 258 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 57 |
5 files changed, 240 insertions, 93 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index 69363bd..89659d4 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -71,7 +71,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev) mdst = br_mdb_get(br, skb, vid); if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) && - br_multicast_querier_exists(br)) + br_multicast_querier_exists(br, eth_hdr(skb))) br_multicast_deliver(mdst, skb); else br_flood_deliver(br, skb, false); diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 8c561c0..a2fd37e 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -102,7 +102,7 @@ int br_handle_frame_finish(struct sk_buff *skb) } else if (is_multicast_ether_addr(dest)) { mdst = br_mdb_get(br, skb, vid); if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) && - br_multicast_querier_exists(br)) { + br_multicast_querier_exists(br, eth_hdr(skb))) { if ((mdst && mdst->mglist) || br_multicast_is_router(br)) skb2 = skb; diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 0daae3e..6319c43 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -414,16 +414,20 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry) if (!netif_running(br->dev) || br->multicast_disabled) return -EINVAL; - if (timer_pending(&br->multicast_querier_timer)) - return -EBUSY; - ip.proto = entry->addr.proto; - if (ip.proto == htons(ETH_P_IP)) + if (ip.proto == htons(ETH_P_IP)) { + if (timer_pending(&br->ip4_querier.timer)) + return -EBUSY; + ip.u.ip4 = entry->addr.u.ip4; #if IS_ENABLED(CONFIG_IPV6) - else + } else { + if (timer_pending(&br->ip6_querier.timer)) + return -EBUSY; + ip.u.ip6 = entry->addr.u.ip6; #endif + } spin_lock_bh(&br->multicast_lock); mdb = mlock_dereference(br->mdb, br); diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 08e576a..9d1d0e6 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -33,7 +33,8 @@ #include "br_private.h" -static void br_multicast_start_querier(struct net_bridge *br); +static void br_multicast_start_querier(struct net_bridge *br, + struct bridge_mcast_query *query); unsigned int br_mdb_rehash_seq; static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b) @@ -755,20 +756,35 @@ static void br_multicast_local_router_expired(unsigned long data) { } -static void br_multicast_querier_expired(unsigned long data) +static void br_multicast_querier_expired(struct net_bridge *br, + struct bridge_mcast_query *query) { - struct net_bridge *br = (void *)data; - spin_lock(&br->multicast_lock); if (!netif_running(br->dev) || br->multicast_disabled) goto out; - br_multicast_start_querier(br); + br_multicast_start_querier(br, query); out: spin_unlock(&br->multicast_lock); } +static void br_ip4_multicast_querier_expired(unsigned long data) +{ + struct net_bridge *br = (void *)data; + + br_multicast_querier_expired(br, &br->ip4_query); +} + +#if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_querier_expired(unsigned long data) +{ + struct net_bridge *br = (void *)data; + + br_multicast_querier_expired(br, &br->ip6_query); +} +#endif + static void __br_multicast_send_query(struct net_bridge *br, struct net_bridge_port *port, struct br_ip *ip) @@ -789,37 +805,45 @@ static void __br_multicast_send_query(struct net_bridge *br, } static void br_multicast_send_query(struct net_bridge *br, - struct net_bridge_port *port, u32 sent) + struct net_bridge_port *port, + struct bridge_mcast_query *query) { unsigned long time; struct br_ip br_group; + struct bridge_mcast_querier *querier = NULL; if (!netif_running(br->dev) || br->multicast_disabled || - !br->multicast_querier || - timer_pending(&br->multicast_querier_timer)) + !br->multicast_querier) return; memset(&br_group.u, 0, sizeof(br_group.u)); - br_group.proto = htons(ETH_P_IP); - __br_multicast_send_query(br, port, &br_group); - + if (port ? (query == &port->ip4_query) : + (query == &br->ip4_query)) { + querier = &br->ip4_querier; + br_group.proto = htons(ETH_P_IP); #if IS_ENABLED(CONFIG_IPV6) - br_group.proto = htons(ETH_P_IPV6); - __br_multicast_send_query(br, port, &br_group); + } else { + querier = &br->ip6_querier; + br_group.proto = htons(ETH_P_IPV6); #endif + } + + if (!querier || timer_pending(&querier->timer)) + return; + + __br_multicast_send_query(br, port, &br_group); time = jiffies; - time += sent < br->multicast_startup_query_count ? + time += query->startup_sent < br->multicast_startup_query_count ? br->multicast_startup_query_interval : br->multicast_query_interval; - mod_timer(port ? &port->multicast_query_timer : - &br->multicast_query_timer, time); + mod_timer(&query->timer, time); } -static void br_multicast_port_query_expired(unsigned long data) +static void br_multicast_port_query_expired(struct net_bridge_port *port, + struct bridge_mcast_query *query) { - struct net_bridge_port *port = (void *)data; struct net_bridge *br = port->br; spin_lock(&br->multicast_lock); @@ -827,25 +851,43 @@ static void br_multicast_port_query_expired(unsigned long data) port->state == BR_STATE_BLOCKING) goto out; - if (port->multicast_startup_queries_sent < - br->multicast_startup_query_count) - port->multicast_startup_queries_sent++; + if (query->startup_sent < br->multicast_startup_query_count) + query->startup_sent++; - br_multicast_send_query(port->br, port, - port->multicast_startup_queries_sent); + br_multicast_send_query(port->br, port, query); out: spin_unlock(&br->multicast_lock); } +static void br_ip4_multicast_port_query_expired(unsigned long data) +{ + struct net_bridge_port *port = (void *)data; + + br_multicast_port_query_expired(port, &port->ip4_query); +} + +#if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_port_query_expired(unsigned long data) +{ + struct net_bridge_port *port = (void *)data; + + br_multicast_port_query_expired(port, &port->ip6_query); +} +#endif + void br_multicast_add_port(struct net_bridge_port *port) { port->multicast_router = 1; setup_timer(&port->multicast_router_timer, br_multicast_router_expired, (unsigned long)port); - setup_timer(&port->multicast_query_timer, - br_multicast_port_query_expired, (unsigned long)port); + setup_timer(&port->ip4_query.timer, br_ip4_multicast_port_query_expired, + (unsigned long)port); +#if IS_ENABLED(CONFIG_IPV6) + setup_timer(&port->ip6_query.timer, br_ip6_multicast_port_query_expired, + (unsigned long)port); +#endif } void br_multicast_del_port(struct net_bridge_port *port) @@ -853,13 +895,13 @@ void br_multicast_del_port(struct net_bridge_port *port) del_timer_sync(&port->multicast_router_timer); } -static void __br_multicast_enable_port(struct net_bridge_port *port) +static void br_multicast_enable(struct bridge_mcast_query *query) { - port->multicast_startup_queries_sent = 0; + query->startup_sent = 0; - if (try_to_del_timer_sync(&port->multicast_query_timer) >= 0 || - del_timer(&port->multicast_query_timer)) - mod_timer(&port->multicast_query_timer, jiffies); + if (try_to_del_timer_sync(&query->timer) >= 0 || + del_timer(&query->timer)) + mod_timer(&query->timer, jiffies); } void br_multicast_enable_port(struct net_bridge_port *port) @@ -870,7 +912,10 @@ void br_multicast_enable_port(struct net_bridge_port *port) if (br->multicast_disabled || !netif_running(br->dev)) goto out; - __br_multicast_enable_port(port); + br_multicast_enable(&port->ip4_query); +#if IS_ENABLED(CONFIG_IPV6) + br_multicast_enable(&port->ip6_query); +#endif out: spin_unlock(&br->multicast_lock); @@ -889,7 +934,10 @@ void br_multicast_disable_port(struct net_bridge_port *port) if (!hlist_unhashed(&port->rlist)) hlist_del_init_rcu(&port->rlist); del_timer(&port->multicast_router_timer); - del_timer(&port->multicast_query_timer); + del_timer(&port->ip4_query.timer); +#if IS_ENABLED(CONFIG_IPV6) + del_timer(&port->ip6_query.timer); +#endif spin_unlock(&br->multicast_lock); } @@ -1014,14 +1062,15 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br, } #endif -static void br_multicast_update_querier_timer(struct net_bridge *br, - unsigned long max_delay) +static void +br_multicast_update_querier_timer(struct net_bridge *br, + struct bridge_mcast_querier *querier, + unsigned long max_delay) { - if (!timer_pending(&br->multicast_querier_timer)) - br->multicast_querier_delay_time = jiffies + max_delay; + if (!timer_pending(&querier->timer)) + querier->delay_time = jiffies + max_delay; - mod_timer(&br->multicast_querier_timer, - jiffies + br->multicast_querier_interval); + mod_timer(&querier->timer, jiffies + br->multicast_querier_interval); } /* @@ -1074,12 +1123,13 @@ timer: static void br_multicast_query_received(struct net_bridge *br, struct net_bridge_port *port, + struct bridge_mcast_querier *querier, int saddr, unsigned long max_delay) { if (saddr) - br_multicast_update_querier_timer(br, max_delay); - else if (timer_pending(&br->multicast_querier_timer)) + br_multicast_update_querier_timer(br, querier, max_delay); + else if (timer_pending(&querier->timer)) return; br_multicast_mark_router(br, port); @@ -1129,7 +1179,8 @@ static int br_ip4_multicast_query(struct net_bridge *br, IGMPV3_MRC(ih3->code) * (HZ / IGMP_TIMER_SCALE) : 1; } - br_multicast_query_received(br, port, !!iph->saddr, max_delay); + br_multicast_query_received(br, port, &br->ip4_querier, !!iph->saddr, + max_delay); if (!group) goto out; @@ -1206,8 +1257,8 @@ static int br_ip6_multicast_query(struct net_bridge *br, max_delay = mld2q->mld2q_mrc ? MLDV2_MRC(ntohs(mld2q->mld2q_mrc)) : 1; } - br_multicast_query_received(br, port, !ipv6_addr_any(&ip6h->saddr), - max_delay); + br_multicast_query_received(br, port, &br->ip6_querier, + !ipv6_addr_any(&ip6h->saddr), max_delay); if (!group) goto out; @@ -1244,7 +1295,9 @@ out: static void br_multicast_leave_group(struct net_bridge *br, struct net_bridge_port *port, - struct br_ip *group) + struct br_ip *group, + struct bridge_mcast_querier *querier, + struct bridge_mcast_query *query) { struct net_bridge_mdb_htable *mdb; struct net_bridge_mdb_entry *mp; @@ -1255,7 +1308,7 @@ static void br_multicast_leave_group(struct net_bridge *br, spin_lock(&br->multicast_lock); if (!netif_running(br->dev) || (port && port->state == BR_STATE_DISABLED) || - timer_pending(&br->multicast_querier_timer)) + timer_pending(&querier->timer)) goto out; mdb = mlock_dereference(br->mdb, br); @@ -1263,14 +1316,13 @@ static void br_multicast_leave_group(struct net_bridge *br, if (!mp) goto out; - if (br->multicast_querier && - !timer_pending(&br->multicast_querier_timer)) { + if (br->multicast_querier) { __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); + + mod_timer(&query->timer, time); for (p = mlock_dereference(mp->ports, br); p != NULL; @@ -1323,7 +1375,6 @@ static void br_multicast_leave_group(struct net_bridge *br, mod_timer(&mp->timer, time); } } - out: spin_unlock(&br->multicast_lock); } @@ -1334,6 +1385,8 @@ static void br_ip4_multicast_leave_group(struct net_bridge *br, __u16 vid) { struct br_ip br_group; + struct bridge_mcast_query *query = port ? &port->ip4_query : + &br->ip4_query; if (ipv4_is_local_multicast(group)) return; @@ -1342,7 +1395,7 @@ static void br_ip4_multicast_leave_group(struct net_bridge *br, br_group.proto = htons(ETH_P_IP); br_group.vid = vid; - br_multicast_leave_group(br, port, &br_group); + br_multicast_leave_group(br, port, &br_group, &br->ip4_querier, query); } #if IS_ENABLED(CONFIG_IPV6) @@ -1352,6 +1405,9 @@ static void br_ip6_multicast_leave_group(struct net_bridge *br, __u16 vid) { struct br_ip br_group; + struct bridge_mcast_query *query = port ? &port->ip6_query : + &br->ip6_query; + if (!ipv6_is_transient_multicast(group)) return; @@ -1360,7 +1416,7 @@ static void br_ip6_multicast_leave_group(struct net_bridge *br, br_group.proto = htons(ETH_P_IPV6); br_group.vid = vid; - br_multicast_leave_group(br, port, &br_group); + br_multicast_leave_group(br, port, &br_group, &br->ip6_querier, query); } #endif @@ -1622,19 +1678,32 @@ int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, return 0; } -static void br_multicast_query_expired(unsigned long data) +static void br_multicast_query_expired(struct net_bridge *br, + struct bridge_mcast_query *query) +{ + spin_lock(&br->multicast_lock); + if (query->startup_sent < br->multicast_startup_query_count) + query->startup_sent++; + + br_multicast_send_query(br, NULL, query); + spin_unlock(&br->multicast_lock); +} + +static void br_ip4_multicast_query_expired(unsigned long data) { struct net_bridge *br = (void *)data; - spin_lock(&br->multicast_lock); - if (br->multicast_startup_queries_sent < - br->multicast_startup_query_count) - br->multicast_startup_queries_sent++; + br_multicast_query_expired(br, &br->ip4_query); +} - br_multicast_send_query(br, NULL, br->multicast_startup_queries_sent); +#if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_query_expired(unsigned long data) +{ + struct net_bridge *br = (void *)data; - spin_unlock(&br->multicast_lock); + br_multicast_query_expired(br, &br->ip6_query); } +#endif void br_multicast_init(struct net_bridge *br) { @@ -1654,25 +1723,43 @@ void br_multicast_init(struct net_bridge *br) br->multicast_querier_interval = 255 * HZ; br->multicast_membership_interval = 260 * HZ; - br->multicast_querier_delay_time = 0; + br->ip4_querier.delay_time = 0; +#if IS_ENABLED(CONFIG_IPV6) + br->ip6_querier.delay_time = 0; +#endif spin_lock_init(&br->multicast_lock); setup_timer(&br->multicast_router_timer, br_multicast_local_router_expired, 0); - setup_timer(&br->multicast_querier_timer, - br_multicast_querier_expired, (unsigned long)br); - setup_timer(&br->multicast_query_timer, br_multicast_query_expired, + setup_timer(&br->ip4_querier.timer, br_ip4_multicast_querier_expired, + (unsigned long)br); + setup_timer(&br->ip4_query.timer, br_ip4_multicast_query_expired, (unsigned long)br); +#if IS_ENABLED(CONFIG_IPV6) + setup_timer(&br->ip6_querier.timer, br_ip6_multicast_querier_expired, + (unsigned long)br); + setup_timer(&br->ip6_query.timer, br_ip6_multicast_query_expired, + (unsigned long)br); +#endif } -void br_multicast_open(struct net_bridge *br) +static void __br_multicast_open(struct net_bridge *br, + struct bridge_mcast_query *query) { - br->multicast_startup_queries_sent = 0; + query->startup_sent = 0; if (br->multicast_disabled) return; - mod_timer(&br->multicast_query_timer, jiffies); + mod_timer(&query->timer, jiffies); +} + +void br_multicast_open(struct net_bridge *br) +{ + __br_multicast_open(br, &br->ip4_query); +#if IS_ENABLED(CONFIG_IPV6) + __br_multicast_open(br, &br->ip6_query); +#endif } void br_multicast_stop(struct net_bridge *br) @@ -1684,8 +1771,12 @@ void br_multicast_stop(struct net_bridge *br) int i; del_timer_sync(&br->multicast_router_timer); - del_timer_sync(&br->multicast_querier_timer); - del_timer_sync(&br->multicast_query_timer); + del_timer_sync(&br->ip4_querier.timer); + del_timer_sync(&br->ip4_query.timer); +#if IS_ENABLED(CONFIG_IPV6) + del_timer_sync(&br->ip6_querier.timer); + del_timer_sync(&br->ip6_query.timer); +#endif spin_lock_bh(&br->multicast_lock); mdb = mlock_dereference(br->mdb, br); @@ -1788,18 +1879,24 @@ unlock: return err; } -static void br_multicast_start_querier(struct net_bridge *br) +static void br_multicast_start_querier(struct net_bridge *br, + struct bridge_mcast_query *query) { struct net_bridge_port *port; - br_multicast_open(br); + __br_multicast_open(br, query); list_for_each_entry(port, &br->port_list, list) { if (port->state == BR_STATE_DISABLED || port->state == BR_STATE_BLOCKING) continue; - __br_multicast_enable_port(port); + if (query == &br->ip4_query) + br_multicast_enable(&port->ip4_query); +#if IS_ENABLED(CONFIG_IPV6) + else + br_multicast_enable(&port->ip6_query); +#endif } } @@ -1834,7 +1931,10 @@ rollback: goto rollback; } - br_multicast_start_querier(br); + br_multicast_start_querier(br, &br->ip4_query); +#if IS_ENABLED(CONFIG_IPV6) + br_multicast_start_querier(br, &br->ip6_query); +#endif unlock: spin_unlock_bh(&br->multicast_lock); @@ -1857,10 +1957,18 @@ int br_multicast_set_querier(struct net_bridge *br, unsigned long val) goto unlock; max_delay = br->multicast_query_response_interval; - if (!timer_pending(&br->multicast_querier_timer)) - br->multicast_querier_delay_time = jiffies + max_delay; - br_multicast_start_querier(br); + if (!timer_pending(&br->ip4_querier.timer)) + br->ip4_querier.delay_time = jiffies + max_delay; + + br_multicast_start_querier(br, &br->ip4_query); + +#if IS_ENABLED(CONFIG_IPV6) + if (!timer_pending(&br->ip6_querier.timer)) + br->ip6_querier.delay_time = jiffies + max_delay; + + br_multicast_start_querier(br, &br->ip6_query); +#endif unlock: spin_unlock_bh(&br->multicast_lock); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 2f7da41..263ba90 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -66,6 +66,20 @@ struct br_ip __u16 vid; }; +#ifdef CONFIG_BRIDGE_IGMP_SNOOPING +/* our own querier */ +struct bridge_mcast_query { + struct timer_list timer; + u32 startup_sent; +}; + +/* other querier */ +struct bridge_mcast_querier { + struct timer_list timer; + unsigned long delay_time; +}; +#endif + struct net_port_vlans { u16 port_idx; u16 pvid; @@ -162,10 +176,12 @@ struct net_bridge_port #define BR_FLOOD 0x00000040 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING - u32 multicast_startup_queries_sent; + struct bridge_mcast_query ip4_query; +#if IS_ENABLED(CONFIG_IPV6) + struct bridge_mcast_query ip6_query; +#endif /* IS_ENABLED(CONFIG_IPV6) */ unsigned char multicast_router; struct timer_list multicast_router_timer; - struct timer_list multicast_query_timer; struct hlist_head mglist; struct hlist_node rlist; #endif @@ -258,7 +274,6 @@ struct net_bridge u32 hash_max; u32 multicast_last_member_count; - u32 multicast_startup_queries_sent; u32 multicast_startup_query_count; unsigned long multicast_last_member_interval; @@ -267,15 +282,18 @@ struct net_bridge unsigned long multicast_query_interval; unsigned long multicast_query_response_interval; unsigned long multicast_startup_query_interval; - unsigned long multicast_querier_delay_time; spinlock_t multicast_lock; struct net_bridge_mdb_htable __rcu *mdb; struct hlist_head router_list; struct timer_list multicast_router_timer; - struct timer_list multicast_querier_timer; - struct timer_list multicast_query_timer; + struct bridge_mcast_querier ip4_querier; + struct bridge_mcast_query ip4_query; +#if IS_ENABLED(CONFIG_IPV6) + struct bridge_mcast_querier ip6_querier; + struct bridge_mcast_query ip6_query; +#endif /* IS_ENABLED(CONFIG_IPV6) */ #endif struct timer_list hello_timer; @@ -503,11 +521,27 @@ static inline bool br_multicast_is_router(struct net_bridge *br) timer_pending(&br->multicast_router_timer)); } -static inline bool br_multicast_querier_exists(struct net_bridge *br) +static inline bool +__br_multicast_querier_exists(struct net_bridge *br, + struct bridge_mcast_querier *querier) +{ + return time_is_before_jiffies(querier->delay_time) && + (br->multicast_querier || timer_pending(&querier->timer)); +} + +static inline bool br_multicast_querier_exists(struct net_bridge *br, + struct ethhdr *eth) { - return time_is_before_jiffies(br->multicast_querier_delay_time) && - (br->multicast_querier || - timer_pending(&br->multicast_querier_timer)); + switch (eth->h_proto) { + case (htons(ETH_P_IP)): + return __br_multicast_querier_exists(br, &br->ip4_querier); +#if IS_ENABLED(CONFIG_IPV6) + case (htons(ETH_P_IPV6)): + return __br_multicast_querier_exists(br, &br->ip6_querier); +#endif + default: + return false; + } } #else static inline int br_multicast_rcv(struct net_bridge *br, @@ -565,7 +599,8 @@ static inline bool br_multicast_is_router(struct net_bridge *br) { return 0; } -static inline bool br_multicast_querier_exists(struct net_bridge *br) +static inline bool br_multicast_querier_exists(struct net_bridge *br, + struct ethhdr *eth) { return false; } |
