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authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2016-11-21 13:03:25 +0100
committerDavid S. Miller <davem@davemloft.net>2016-11-21 13:16:58 -0500
commitaa2ae3e71c74cc00ec22f133dc900b3817415785 (patch)
treeceed020739d9d6dbe55378e4173b9af38763dae3 /net/bridge/br_netlink.c
parent5e9235853d652a295d5f56cb8652950b6b5bf56b (diff)
bridge: mcast: add MLDv2 querier support
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>
Diffstat (limited to 'net/bridge/br_netlink.c')
-rw-r--r--net/bridge/br_netlink.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 10b9b80f778f..71c7453268c1 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -859,6 +859,7 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
[IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
[IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
[IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
+ [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
};
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@@ -1079,6 +1080,17 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
if (err)
return err;
}
+
+#if IS_ENABLED(CONFIG_IPV6)
+ if (data[IFLA_BR_MCAST_MLD_VERSION]) {
+ __u8 mld_version;
+
+ mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
+ err = br_multicast_set_mld_version(br, mld_version);
+ if (err)
+ return err;
+ }
+#endif
#endif
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
if (data[IFLA_BR_NF_CALL_IPTABLES]) {
@@ -1146,6 +1158,7 @@ static size_t br_get_size(const struct net_device *brdev)
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
+ nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
#endif
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
@@ -1225,7 +1238,11 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
br->multicast_igmp_version))
return -EMSGSIZE;
-
+#if IS_ENABLED(CONFIG_IPV6)
+ if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
+ br->multicast_mld_version))
+ return -EMSGSIZE;
+#endif
clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
IFLA_BR_PAD))