+
+int ovs_flow_key_extract(struct sk_buff *skb, struct sw_flow_key *key)
+{
+ /* Extract metadata from packet. */
+
+ memset(key, 0, sizeof(*key));
+ if (OVS_CB(skb)->tun_key)
+ memcpy(&key->tun_key, OVS_CB(skb)->tun_key, sizeof(key->tun_key));
+
+ key->phy.priority = skb->priority;
+ key->phy.in_port = OVS_CB(skb)->input_vport->port_no;
+ key->phy.skb_mark = skb->mark;
+
+ return key_extract(skb, key);
+}
+
+int ovs_flow_key_extract_userspace(const struct nlattr *attr,
+ struct sk_buff *skb,
+ struct sw_flow_key *key)
+{
+ int err;
+
+ memset(key, 0, sizeof(*key));
+ /* Extract metadata from netlink attributes. */
+ err = ovs_nla_get_flow_metadata(attr, key);
+ if (err)
+ return err;
+
+ return key_extract(skb, key);
+}