diff options
Diffstat (limited to 'net/openvswitch/flow.c')
| -rw-r--r-- | net/openvswitch/flow.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index 617810f1a21e..b73c7680a3d2 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -58,19 +58,17 @@ u64 ovs_flow_used_time(unsigned long flow_jiffies) return cur_ms - idle_ms; } -#define TCP_FLAGS_OFFSET 13 -#define TCP_FLAG_MASK 0x3f +#define TCP_FLAGS_BE16(tp) (*(__be16 *)&tcp_flag_word(tp) & htons(0x0FFF)) void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb) { - u8 tcp_flags = 0; + __be16 tcp_flags = 0; 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); - tcp_flags = *(tcp + TCP_FLAGS_OFFSET) & TCP_FLAG_MASK; + tcp_flags = TCP_FLAGS_BE16(tcp_hdr(skb)); } spin_lock(&flow->lock); |