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authorJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2012-04-09 16:32:16 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2012-04-10 00:38:34 +0200
commit8430eac2f6a3c2adce22d490e2ab8bb50d59077a (patch)
tree0513c19811d4a34a122155351ee5728572ddadaf /net
parent95ad2f873d5d404dc9ebc2377de0b762346346c0 (diff)
downloadlinux-linaro-stable-8430eac2f6a3c2adce22d490e2ab8bb50d59077a.tar.gz
netfilter: nf_ct_ipv4: handle invalid IPv4 and IPv6 packets consistently
IPv6 conntrack marked invalid packets as INVALID and let the user drop those by an explicit rule, while IPv4 conntrack dropped such packets itself. IPv4 conntrack is changed so that it marks INVALID packets and let the user to drop them. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index de9da21113a1..750b06afd20e 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -74,12 +74,12 @@ static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
iph = skb_header_pointer(skb, nhoff, sizeof(_iph), &_iph);
if (iph == NULL)
- return -NF_DROP;
+ return -NF_ACCEPT;
/* Conntrack defragments packets, we might still see fragments
* inside ICMP packets though. */
if (iph->frag_off & htons(IP_OFFSET))
- return -NF_DROP;
+ return -NF_ACCEPT;
*dataoff = nhoff + (iph->ihl << 2);
*protonum = iph->protocol;