diff options
| author | Nikolay Aleksandrov <nikolay@nvidia.com> | 2020-09-22 10:30:20 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-23 13:24:34 -0700 |
| commit | 7d07a68c251080f8f2cfd071b7b3f7d1093a3375 (patch) | |
| tree | 387e75a63e0712136db79a3d31042c3138196780 /net/bridge | |
| parent | 88d4bd180419a7cde3947f191dc4e26fbb19f80b (diff) | |
| download | lwn-7d07a68c251080f8f2cfd071b7b3f7d1093a3375.tar.gz lwn-7d07a68c251080f8f2cfd071b7b3f7d1093a3375.zip | |
net: bridge: mcast: when igmpv3/mldv2 are enabled lookup (S,G) first, then (*,G)
If (S,G) entries are enabled (igmpv3/mldv2) then look them up first. If
there isn't a present (S,G) entry then try to find (*,G).
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_multicast.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index e1fb822b9ddb..4fd690bc848f 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -127,10 +127,28 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, switch (skb->protocol) { case htons(ETH_P_IP): ip.dst.ip4 = ip_hdr(skb)->daddr; + if (br->multicast_igmp_version == 3) { + struct net_bridge_mdb_entry *mdb; + + ip.src.ip4 = ip_hdr(skb)->saddr; + mdb = br_mdb_ip_get_rcu(br, &ip); + if (mdb) + return mdb; + ip.src.ip4 = 0; + } break; #if IS_ENABLED(CONFIG_IPV6) case htons(ETH_P_IPV6): ip.dst.ip6 = ipv6_hdr(skb)->daddr; + if (br->multicast_mld_version == 2) { + struct net_bridge_mdb_entry *mdb; + + ip.src.ip6 = ipv6_hdr(skb)->saddr; + mdb = br_mdb_ip_get_rcu(br, &ip); + if (mdb) + return mdb; + memset(&ip.src.ip6, 0, sizeof(ip.src.ip6)); + } break; #endif default: |