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[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>
This commit is contained in:
Pablo Neira Ayuso 2006-08-22 00:32:05 -07:00 committed by David S. Miller
parent b9a37e0c81
commit b3a27bfba5
2 changed files with 6 additions and 0 deletions
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3
net/ipv4/netfilter/ip_conntrack_netlink.c
View File

@ -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;

3
net/netfilter/nf_conntrack_netlink.c
View File

@ -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;