[PATCH 2/3][CTNETLINK] Atomically set/unset status bits

Pablo Neira Ayuso pablo at netfilter.org
Tue Nov 28 18:46:46 CET 2006


Sorry you received this email twice

--

This patch guarantees that status bits are atomically set/unset. A minor
cleanup to save one extra useless line in the code is introduced.

Signed-off-by: Pablo Neira Ayuso <pablo at 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
-------------- next part --------------
[CTNETLINK] Check for status flags existence on conntrack creation

Check that status flags are available in the netlink message received 
to create a new conntrack.

Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>

Index: linux-2.6.git/net/ipv4/netfilter/ip_conntrack_netlink.c
===================================================================
--- linux-2.6.git.orig/net/ipv4/netfilter/ip_conntrack_netlink.c	2006-11-08 23:54:28.000000000 +0100
+++ linux-2.6.git/net/ipv4/netfilter/ip_conntrack_netlink.c	2006-11-08 23:54:55.000000000 +0100
@@ -945,9 +945,11 @@ ctnetlink_create_conntrack(struct nfattr
 	ct->timeout.expires = jiffies + ct->timeout.expires * HZ;
 	ct->status |= IPS_CONFIRMED;
 
-	err = ctnetlink_change_status(ct, cda);
-	if (err < 0)
-		goto err;
+	if (cda[CTA_STATUS-1]) {
+		err = ctnetlink_change_status(ct, cda);
+		if (err < 0)
+			goto err;
+	}
 
 	if (cda[CTA_PROTOINFO-1]) {
 		err = ctnetlink_change_protoinfo(ct, cda);
Index: linux-2.6.git/net/netfilter/nf_conntrack_netlink.c
===================================================================
--- linux-2.6.git.orig/net/netfilter/nf_conntrack_netlink.c	2006-11-08 23:55:06.000000000 +0100
+++ linux-2.6.git/net/netfilter/nf_conntrack_netlink.c	2006-11-08 23:55:49.000000000 +0100
@@ -961,9 +961,11 @@ ctnetlink_create_conntrack(struct nfattr
 	ct->timeout.expires = jiffies + ct->timeout.expires * HZ;
 	ct->status |= IPS_CONFIRMED;
 
-	err = ctnetlink_change_status(ct, cda);
-	if (err < 0)
-		goto err;
+	if (cda[CTA_STATUS-1]) {
+		err = ctnetlink_change_status(ct, cda);
+		if (err < 0)
+			goto err;
+	}
 
 	if (cda[CTA_PROTOINFO-1]) {
 		err = ctnetlink_change_protoinfo(ct, cda);



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