diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2006-08-22 00:32:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 14:55:26 -0700 |
| commit | b3a27bfba51d445784eb0cd6451b73a73fb69cf9 (patch) | |
| tree | 0c697133c749cf83167c6e314a4c40ca14d520db | |
| parent | b9a37e0c81c498be2db9f52063c53e55d76c815e (diff) | |
[NETFILTER]: ctnetlink: check for listeners before sending expectation events
This patch uses nfnetlink_has_listeners to check for listeners in
userspace.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_netlink.c | 3 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_netlink.c b/net/ipv4/netfilter/ip_conntrack_netlink.c index 38708e6cfae..ef84f43f073 100644 --- a/net/ipv4/netfilter/ip_conntrack_netlink.c +++ b/net/ipv4/netfilter/ip_conntrack_netlink.c @@ -1257,6 +1257,9 @@ static int ctnetlink_expect_event(struct notifier_block *this, } else return NOTIFY_DONE; + if (!nfnetlink_has_listeners(NFNLGRP_CONNTRACK_EXP_NEW)) + return NOTIFY_DONE; + skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC); if (!skb) return NOTIFY_DONE; diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index aa0148f418a..dc4f081dca9 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -1278,6 +1278,9 @@ static int ctnetlink_expect_event(struct notifier_block *this, } else return NOTIFY_DONE; + if (!nfnetlink_has_listeners(NFNLGRP_CONNTRACK_EXP_NEW)) + return NOTIFY_DONE; + skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC); if (!skb) return NOTIFY_DONE; |