openvswitch: Enable retrieval of TCP flags from IPv6 traffic.

We currently check that a packet is IPv4 and TCP before fetching the
TCP flags.  This enables fetching from IPv6 packets as well.

Reported-by: Michael Mao <mmao@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index 2a11ec2383ee..c6e1dae8a5ee 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -182,7 +182,8 @@ void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb)
 {
         u8 tcp_flags = 0;
 
-        if (flow->key.eth.type == htons(ETH_P_IP) &&
+        if ((flow->key.eth.type == htons(ETH_P_IP) ||
+             flow->key.eth.type == htons(ETH_P_IPV6)) &&
             flow->key.ip.proto == IPPROTO_TCP &&
             likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) {
                 u8 *tcp = (u8 *)tcp_hdr(skb);