datapath: move tunnel-init function to flow.h

[sliver-openvswitch.git] / datapath / flow.h

diff --git a/datapath/flow.h b/datapath/flow.h
index 5d15783..d8277b5 100644 (file)
--- a/datapath/flow.h
+++ b/datapath/flow.h
@@ -58,6 +58,22 @@ struct ovs_key_ipv4_tunnel {
        u8   ipv4_ttl;
 };
 
+static inline void ovs_flow_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
+                                        const struct iphdr *iph, __be64 tun_id,
+                                        __be16 tun_flags)
+{
+       tun_key->tun_id = tun_id;
+       tun_key->ipv4_src = iph->saddr;
+       tun_key->ipv4_dst = iph->daddr;
+       tun_key->ipv4_tos = iph->tos;
+       tun_key->ipv4_ttl = iph->ttl;
+       tun_key->tun_flags = tun_flags;
+
+       /* clear struct padding. */
+       memset((unsigned char *) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
+              sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
+}
+
 struct sw_flow_key {
        struct ovs_key_ipv4_tunnel tun_key;  /* Encapsulating tunnel key. */
        struct {