ip-tunnel: Use API to access tunnel metadata options.

Currently tun-info options pointer is used in few cases to
pass options around. But tunnel options can be accessed using
ip_tunnel_info_opts() API without using the pointer. Following
patch removes the redundant pointer and consistently make use
of API.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/openvswitch/vport-geneve.c b/net/openvswitch/vport-geneve.c
index 24c56e5..2735e9c 100644
--- a/net/openvswitch/vport-geneve.c
+++ b/net/openvswitch/vport-geneve.c
@@ -53,15 +53,14 @@
 }
 
 static int geneve_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
-				      struct ip_tunnel_info *egress_tun_info)
+				      struct dp_upcall_info *upcall)
 {
 	struct geneve_port *geneve_port = geneve_vport(vport);
 	struct net *net = ovs_dp_get_net(vport->dp);
 	__be16 dport = htons(geneve_port->port_no);
 	__be16 sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
 
-	return ovs_tunnel_get_egress_info(egress_tun_info,
-					  ovs_dp_get_net(vport->dp),
+	return ovs_tunnel_get_egress_info(upcall, ovs_dp_get_net(vport->dp),
 					  skb, IPPROTO_UDP, sport, dport);
 }