vxlan: Correctly set flow*i_mark and flow4i_proto in route lookups

VXLAN must provide the skb mark and specifiy IPPROTO_UDP when doing
the FIB lookup for the remote ip. Otherwise an invalid route might
be returned.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/vxlan.c

@@ -1921,6 +1921,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
 		memset(&fl4, 0, sizeof(fl4));
 		fl4.flowi4_oif = rdst->remote_ifindex;
 		fl4.flowi4_tos = RT_TOS(tos);
+		fl4.flowi4_mark = skb->mark;
+		fl4.flowi4_proto = IPPROTO_UDP;
 		fl4.daddr = dst->sin.sin_addr.s_addr;
 		fl4.saddr = vxlan->saddr.sin.sin_addr.s_addr;
 
@@ -1981,6 +1983,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
 		fl6.flowi6_oif = rdst->remote_ifindex;
 		fl6.daddr = dst->sin6.sin6_addr;
 		fl6.saddr = vxlan->saddr.sin6.sin6_addr;
+		fl6.flowi6_mark = skb->mark;
 		fl6.flowi6_proto = IPPROTO_UDP;
 
 		if (ipv6_stub->ipv6_dst_lookup(sk, &ndst, &fl6)) {