#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
/* Defines for Multicast INADDR */
-#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
-#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
-#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
-#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
+#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
+#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
+#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
+#define INADDR_ALLSNOOPERS_GROUP 0xe000006aU /* 224.0.0.106 */
+#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
#endif
/* <asm/byteorder.h> contains the htonl type stuff.. */
INIT_HLIST_HEAD(&br->mdb_list);
}
+static void br_ip4_multicast_join_snoopers(struct net_bridge *br)
+{
+ struct in_device *in_dev = in_dev_get(br->dev);
+
+ if (!in_dev)
+ return;
+
+ ip_mc_inc_group(in_dev, htonl(INADDR_ALLSNOOPERS_GROUP));
+ in_dev_put(in_dev);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_join_snoopers(struct net_bridge *br)
+{
+ struct in6_addr addr;
+
+ ipv6_addr_set(&addr, htonl(0xff020000), 0, 0, htonl(0x6a));
+ ipv6_dev_mc_inc(br->dev, &addr);
+}
+#else
+static inline void br_ip6_multicast_join_snoopers(struct net_bridge *br)
+{
+}
+#endif
+
+static void br_multicast_join_snoopers(struct net_bridge *br)
+{
+ br_ip4_multicast_join_snoopers(br);
+ br_ip6_multicast_join_snoopers(br);
+}
+
+static void br_ip4_multicast_leave_snoopers(struct net_bridge *br)
+{
+ struct in_device *in_dev = in_dev_get(br->dev);
+
+ if (WARN_ON(!in_dev))
+ return;
+
+ ip_mc_dec_group(in_dev, htonl(INADDR_ALLSNOOPERS_GROUP));
+ in_dev_put(in_dev);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_leave_snoopers(struct net_bridge *br)
+{
+ struct in6_addr addr;
+
+ ipv6_addr_set(&addr, htonl(0xff020000), 0, 0, htonl(0x6a));
+ ipv6_dev_mc_dec(br->dev, &addr);
+}
+#else
+static inline void br_ip6_multicast_leave_snoopers(struct net_bridge *br)
+{
+}
+#endif
+
+static void br_multicast_leave_snoopers(struct net_bridge *br)
+{
+ br_ip4_multicast_leave_snoopers(br);
+ br_ip6_multicast_leave_snoopers(br);
+}
+
static void __br_multicast_open(struct net_bridge *br,
struct bridge_mcast_own_query *query)
{
void br_multicast_open(struct net_bridge *br)
{
+ if (br_opt_get(br, BROPT_MULTICAST_ENABLED))
+ br_multicast_join_snoopers(br);
+
__br_multicast_open(br, &br->ip4_own_query);
#if IS_ENABLED(CONFIG_IPV6)
__br_multicast_open(br, &br->ip6_own_query);
del_timer_sync(&br->ip6_other_query.timer);
del_timer_sync(&br->ip6_own_query.timer);
#endif
+
+ if (br_opt_get(br, BROPT_MULTICAST_ENABLED))
+ br_multicast_leave_snoopers(br);
}
void br_multicast_dev_del(struct net_bridge *br)
br_mc_disabled_update(br->dev, val);
br_opt_toggle(br, BROPT_MULTICAST_ENABLED, !!val);
- if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
+ if (!br_opt_get(br, BROPT_MULTICAST_ENABLED)) {
+ br_multicast_leave_snoopers(br);
goto unlock;
+ }
if (!netif_running(br->dev))
goto unlock;