From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Netfilter Development Mailinglist <netfilter-devel@lists.netfilter.org>
Cc: Patrick McHardy <kaber@trash.net>
Subject: [PATCH 9/10][CTNETLINK] send expectation events if someone is listening to
Date: Fri, 07 Jul 2006 04:16:35 +0200 [thread overview]
Message-ID: <44ADC403.9060106@netfilter.org> (raw)
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This patch uses nfnetlink_has_listeners to check for listeners in userspace.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
--
The dawn of the fourth age of Linux firewalling is coming; a time of
great struggle and heroic deeds -- J.Kadlecsik got inspired by J.Morris
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[CTNETLINK] send expectation events if someone is listening to
This patch uses nfnetlink_has_listeners to check for listeners in userspace.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Index: net-2.6/net/ipv4/netfilter/ip_conntrack_netlink.c
===================================================================
--- net-2.6.orig/net/ipv4/netfilter/ip_conntrack_netlink.c 2006-07-07 00:47:02.000000000 +0200
+++ net-2.6/net/ipv4/netfilter/ip_conntrack_netlink.c 2006-07-07 00:47:03.000000000 +0200
@@ -1286,6 +1286,9 @@ static int ctnetlink_expect_event(struct
} 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;
Index: net-2.6/net/netfilter/nf_conntrack_netlink.c
===================================================================
--- net-2.6.orig/net/netfilter/nf_conntrack_netlink.c 2006-07-07 00:47:02.000000000 +0200
+++ net-2.6/net/netfilter/nf_conntrack_netlink.c 2006-07-07 00:47:03.000000000 +0200
@@ -1312,6 +1312,9 @@ static int ctnetlink_expect_event(struct
} 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;
reply other threads:[~2006-07-07 2:16 UTC|newest]
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