ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets

Commit 9f12df90 ("ixgbe: Store VXLAN port number in network order")
incorrectly checks for hdr.ipv4->protocol != IPPROTO_UDP
in ixgbe_atr(). This check should be for "==" instead.
Signed-off-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Reviewed-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NKrishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

@@ -7662,7 +7662,7 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
 	hdr.network = skb_network_header(skb);
 	if (skb->encapsulation &&
 	    first->protocol == htons(ETH_P_IP) &&
-	    hdr.ipv4->protocol != IPPROTO_UDP) {
+	    hdr.ipv4->protocol == IPPROTO_UDP) {
 		struct ixgbe_adapter *adapter = q_vector->adapter;
 
 		/* verify the port is recognized as VXLAN */