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openvswitch: Enable retrieval of TCP flags from IPv6 traffic.

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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>
This commit is contained in:
Jesse Gross 2012-04-02 15:13:36 -07:00
parent bf32fecdc1
commit c55177e3e1
1 changed files with 2 additions and 1 deletions
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3
net/openvswitch/flow.c
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@ -182,7 +182,8 @@ void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb)
{ {
u8 tcp_flags = 0; 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 && flow->key.ip.proto == IPPROTO_TCP &&
likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) { likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) {
u8 *tcp = (u8 *)tcp_hdr(skb); u8 *tcp = (u8 *)tcp_hdr(skb);