ip_tunnels: add IPv6 addresses to ip_tunnel_key

Add the IPv6 addresses as an union with IPv4 ones. When using IPv4, the
newly introduced padding after the IPv4 addresses needs to be zeroed out.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index a6eb77a..a7f8663 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -534,11 +534,11 @@
 			tun_flags |= TUNNEL_KEY;
 			break;
 		case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
-			SW_FLOW_KEY_PUT(match, tun_key.ipv4_src,
+			SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src,
 					nla_get_in_addr(a), is_mask);
 			break;
 		case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
-			SW_FLOW_KEY_PUT(match, tun_key.ipv4_dst,
+			SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst,
 					nla_get_in_addr(a), is_mask);
 			break;
 		case OVS_TUNNEL_KEY_ATTR_TOS:
@@ -609,7 +609,7 @@
 	}
 
 	if (!is_mask) {
-		if (!match->key->tun_key.ipv4_dst) {
+		if (!match->key->tun_key.u.ipv4.dst) {
 			OVS_NLERR(log, "IPv4 tunnel dst address is zero");
 			return -EINVAL;
 		}
@@ -647,13 +647,13 @@
 	if (output->tun_flags & TUNNEL_KEY &&
 	    nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id))
 		return -EMSGSIZE;
-	if (output->ipv4_src &&
+	if (output->u.ipv4.src &&
 	    nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC,
-			    output->ipv4_src))
+			    output->u.ipv4.src))
 		return -EMSGSIZE;
-	if (output->ipv4_dst &&
+	if (output->u.ipv4.dst &&
 	    nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST,
-			    output->ipv4_dst))
+			    output->u.ipv4.dst))
 		return -EMSGSIZE;
 	if (output->ipv4_tos &&
 	    nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->ipv4_tos))
@@ -1116,7 +1116,7 @@
 			/* The userspace does not send tunnel attributes that
 			 * are 0, but we should not wildcard them nonetheless.
 			 */
-			if (match->key->tun_key.ipv4_dst)
+			if (match->key->tun_key.u.ipv4.dst)
 				SW_FLOW_KEY_MEMSET_FIELD(match, tun_key,
 							 0xff, true);
 
@@ -1287,7 +1287,7 @@
 	if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority))
 		goto nla_put_failure;
 
-	if ((swkey->tun_key.ipv4_dst || is_mask)) {
+	if ((swkey->tun_key.u.ipv4.dst || is_mask)) {
 		const void *opts = NULL;
 
 		if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT)