openvswitch: Pack struct sw_flow_key.

struct sw_flow_key has two 16-bit holes. Move the most matched
conntrack match fields there.  In some typical cases this reduces the
size of the key that needs to be hashed into half and into one cache
line.

Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
Acked-by: Joe Stringer <joe@ovn.org>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/openvswitch/conntrack.h b/net/openvswitch/conntrack.h
index 9e92445..bc7efd1 100644
--- a/net/openvswitch/conntrack.h
+++ b/net/openvswitch/conntrack.h
@@ -76,14 +76,14 @@
 static inline void ovs_ct_fill_key(const struct sk_buff *skb,
 				   struct sw_flow_key *key)
 {
-	key->ct.state = 0;
-	key->ct.zone = 0;
+	key->ct_state = 0;
+	key->ct_zone = 0;
 	key->ct.mark = 0;
 	memset(&key->ct.labels, 0, sizeof(key->ct.labels));
-	/* Clear 'ct.orig_proto' to mark the non-existence of original
+	/* Clear 'ct_orig_proto' to mark the non-existence of original
 	 * direction key fields.
 	 */
-	key->ct.orig_proto = 0;
+	key->ct_orig_proto = 0;
 }
 
 static inline int ovs_ct_put_key(const struct sw_flow_key *swkey,