path: root/net/netfilter
diff options
authorJohannes Berg <johannes.berg@intel.com>2014-12-23 21:00:06 +0100
committerDavid S. Miller <davem@davemloft.net>2014-12-27 03:07:50 -0500
commit023e2cfa36c31b0ad28c159a1bb0d61ff57334c8 (patch)
treefb696a81e6c2246cec25cfa35741de31c090ed7a /net/netfilter
parenteb69c5bf8273edbe1c5c748fa299b5e5a08f35d6 (diff)
netlink/genetlink: pass network namespace to bind/unbind
Netlink families can exist in multiple namespaces, and for the most part multicast subscriptions are per network namespace. Thus it only makes sense to have bind/unbind notifications per network namespace. To achieve this, pass the network namespace of a given client socket to the bind/unbind functions. Also do this in generic netlink, and there also make sure that any bind for multicast groups that only exist in init_net is rejected. This isn't really a problem if it is accepted since a client in a different namespace will never receive any notifications from such a group, but it can confuse the family if not rejected (it's also possible to silently (without telling the family) accept it, but it would also have to be ignored on unbind so families that take any kind of action on bind/unbind won't do unnecessary work for invalid clients like that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter')
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 13c2e17bbe27..cde4a6702fa3 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -463,7 +463,7 @@ static void nfnetlink_rcv(struct sk_buff *skb)
-static int nfnetlink_bind(int group)
+static int nfnetlink_bind(struct net *net, int group)
const struct nfnetlink_subsystem *ss;
int type;

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