[PATCH net 2/4] openvswitch: Read tcp flags only then the tranport header is present.
From: Jesse Gross <hidden>
Date: 2014-03-20 18:09:12
Subsystem:
networking [general], openvswitch, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Aaron Conole, Eelco Chaudron, Ilya Maximets, Linus Torvalds
From: Jarno Rajahalme <redacted> Only the first IP fragment can have a TCP header, check for this. Signed-off-by: Jarno Rajahalme <redacted> Signed-off-by: Jesse Gross <redacted> --- net/openvswitch/flow.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index 16f4b46..d71e60f 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c@@ -73,6 +73,7 @@ void ovs_flow_stats_update(struct sw_flow *flow, struct sk_buff *skb) if ((flow->key.eth.type == htons(ETH_P_IP) || flow->key.eth.type == htons(ETH_P_IPV6)) && + flow->key.ip.frag != OVS_FRAG_TYPE_LATER && flow->key.ip.proto == IPPROTO_TCP && likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) { tcp_flags = TCP_FLAGS_BE16(tcp_hdr(skb));
--
1.8.3.2