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bridge: mcast: add MLDv2 querier support

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This patch adds basic support for MLDv2 queries, the default is MLDv1
as before. A new multicast option - multicast_mld_version, adds the
ability to change it between 1 and 2 via netlink and sysfs.
The MLD option is disabled if CONFIG_IPV6 is disabled.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2016-11-21 13:03:25 +01:00
committed by David S. Miller
parent 5e9235853d
commit aa2ae3e71c
5 changed files with 113 additions and 22 deletions
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4
net/bridge/br_private.h
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@@ -355,6 +355,7 @@ struct net_bridge
struct bridge_mcast_other_query ip6_other_query;
struct bridge_mcast_own_query ip6_own_query;
struct bridge_mcast_querier ip6_querier;
u8 multicast_mld_version;
#endif /* IS_ENABLED(CONFIG_IPV6) */
#endif
@@ -585,6 +586,9 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val);
int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
#if IS_ENABLED(CONFIG_IPV6)
int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
#endif
struct net_bridge_mdb_entry *
br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
struct net_bridge_mdb_entry *