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netfilter: do not omit re-route check on NF_QUEUE verdict

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ret != NF_QUEUE only works in the "--queue-num 0" case; for
queues > 0 the test should be '(ret & NF_VERDICT_MASK) != NF_QUEUE'.

However, NF_QUEUE no longer DROPs the skb unconditionally if queueing
fails (due to NF_VERDICT_FLAG_QUEUE_BYPASS verdict flag), so the
re-route test should also be performed if this flag is set in the
verdict.

The full test would then look something like

&& ((ret & NF_VERDICT_MASK) == NF_QUEUE && (ret & NF_VERDICT_FLAG_QUEUE_BYPASS))

This is rather ugly, so just remove the NF_QUEUE test altogether.

The only effect is that we might perform an unnecessary route lookup
in the NF_QUEUE case.

ip6table_mangle did not have such a check.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Florian Westphal 2011-01-20 10:23:26 +01:00 committed by Patrick McHardy
parent a07aa004c8
commit 28a51ba59a
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/netfilter/iptable_mangle.c
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@ -60,7 +60,7 @@ ipt_mangle_out(struct sk_buff *skb, const struct net_device *out)
ret = ipt_do_table(skb, NF_INET_LOCAL_OUT, NULL, out,
dev_net(out)->ipv4.iptable_mangle);
/* Reroute for ANY change. */
if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) {
if (ret != NF_DROP && ret != NF_STOLEN) {
iph = ip_hdr(skb);
if (iph->saddr != saddr ||