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-rw-r--r--net/openvswitch/datapath.c2
-rw-r--r--net/openvswitch/flow.c8
-rw-r--r--net/openvswitch/flow.h2
3 files changed, 5 insertions, 7 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 5bc5a4e64758..1408adc2a2a7 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -671,7 +671,7 @@ static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp,
671 used = flow->used; 671 used = flow->used;
672 stats.n_packets = flow->packet_count; 672 stats.n_packets = flow->packet_count;
673 stats.n_bytes = flow->byte_count; 673 stats.n_bytes = flow->byte_count;
674 tcp_flags = flow->tcp_flags; 674 tcp_flags = (u8)ntohs(flow->tcp_flags);
675 spin_unlock_bh(&flow->lock); 675 spin_unlock_bh(&flow->lock);
676 676
677 if (used && 677 if (used &&
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)
58 return cur_ms - idle_ms; 58 return cur_ms - idle_ms;
59} 59}
60 60
61#define TCP_FLAGS_OFFSET 13 61#define TCP_FLAGS_BE16(tp) (*(__be16 *)&tcp_flag_word(tp) & htons(0x0FFF))
62#define TCP_FLAG_MASK 0x3f
63 62
64void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb) 63void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb)
65{ 64{
66 u8 tcp_flags = 0; 65 __be16 tcp_flags = 0;
67 66
68 if ((flow->key.eth.type == htons(ETH_P_IP) || 67 if ((flow->key.eth.type == htons(ETH_P_IP) ||
69 flow->key.eth.type == htons(ETH_P_IPV6)) && 68 flow->key.eth.type == htons(ETH_P_IPV6)) &&
70 flow->key.ip.proto == IPPROTO_TCP && 69 flow->key.ip.proto == IPPROTO_TCP &&
71 likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) { 70 likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) {
72 u8 *tcp = (u8 *)tcp_hdr(skb); 71 tcp_flags = TCP_FLAGS_BE16(tcp_hdr(skb));
73 tcp_flags = *(tcp + TCP_FLAGS_OFFSET) & TCP_FLAG_MASK;
74 } 72 }
75 73
76 spin_lock(&flow->lock); 74 spin_lock(&flow->lock);
diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 098fd1db6a23..204e0ccd116d 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -158,7 +158,7 @@ struct sw_flow {
158 unsigned long used; /* Last used time (in jiffies). */ 158 unsigned long used; /* Last used time (in jiffies). */
159 u64 packet_count; /* Number of packets matched. */ 159 u64 packet_count; /* Number of packets matched. */
160 u64 byte_count; /* Number of bytes matched. */ 160 u64 byte_count; /* Number of bytes matched. */
161 u8 tcp_flags; /* Union of seen TCP flags. */ 161 __be16 tcp_flags; /* Union of seen TCP flags. */
162}; 162};
163 163
164struct arp_eth_header { 164struct arp_eth_header {