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authorJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2011-08-30 15:46:13 +0200
committerPatrick McHardy <kaber@trash.net>2011-08-30 15:46:13 +0200
commitbb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 (patch)
tree14a1f7bad41e2a6ad00673f20f268a84627254fc /net
parent4a5cc84ae7e19fb7a72a30332ba67af43e0ad1ad (diff)
downloadlwn-bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9.tar.gz
lwn-bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9.zip
netfilter: nf_ct_tcp: wrong multiplication of TCPOLEN_TSTAMP_ALIGNED in tcp_sack skips fastpath
The wrong multiplication of TCPOLEN_TSTAMP_ALIGNED by 4 skips the fast path for the timestamp-only option. Bug reported by Michael M. Builov (netfilter bugzilla #738). Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nf_conntrack_proto_tcp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index afc4ab7cfe01..8235b86b4e87 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -447,7 +447,7 @@ static void tcp_sack(const struct sk_buff *skb, unsigned int dataoff,
BUG_ON(ptr == NULL);
/* Fast path for timestamp-only option */
- if (length == TCPOLEN_TSTAMP_ALIGNED*4
+ if (length == TCPOLEN_TSTAMP_ALIGNED
&& *(__be32 *)ptr == htonl((TCPOPT_NOP << 24)
| (TCPOPT_NOP << 16)
| (TCPOPT_TIMESTAMP << 8)