From: Patrick McHardy <kaber@trash.net>
Date: Tue, 14 Aug 2007 20:14:58 +0000 (-0700)
Subject: [NETFILTER]: nf_nat_sip: don't drop short packets
X-Git-Tag: v2.6.23-rc4~128^2~10
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=45241a7a07537266eec363593ef377a1e6b7db7f;p=linux-2.6

[NETFILTER]: nf_nat_sip: don't drop short packets

Don't drop packets shorter than "SIP/2.0", just ignore them. Keep-alives
can validly be shorter for example.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/netfilter/nf_nat_sip.c b/net/ipv4/netfilter/nf_nat_sip.c
index a889ec3ec8..e14d41976c 100644
--- a/net/ipv4/netfilter/nf_nat_sip.c
+++ b/net/ipv4/netfilter/nf_nat_sip.c
@@ -104,7 +104,7 @@ static unsigned int ip_nat_sip(struct sk_buff **pskb,
 	dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr);
 	datalen = (*pskb)->len - dataoff;
 	if (datalen < sizeof("SIP/2.0") - 1)
-		return NF_DROP;
+		return NF_ACCEPT;
 
 	addr_map_init(ct, &map);