[ovs-dev] [PATCH net 2/4] openvswitch: Read tcp flags only then the tranport header is present.
Jesse Gross
jesse at nicira.com
Thu Mar 20 18:09:12 UTC 2014
From: Jarno Rajahalme <jrajahalme at nicira.com>
Only the first IP fragment can have a TCP header, check for this.
Signed-off-by: Jarno Rajahalme <jrajahalme at nicira.com>
Signed-off-by: Jesse Gross <jesse at nicira.com>
---
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
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