be2net: Fix Endian

ETH_P_IP is host Endian, skb->protocol is big Endian, when
compare them, we should change ETH_P_IP from host endian
to big endian, htons, not ntohs.

CC: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be.h

@@ -575,7 +575,7 @@ static inline u8 is_udp_pkt(struct sk_buff *skb)
 
 static inline bool is_ipv4_pkt(struct sk_buff *skb)
 {
-	return skb->protocol == ntohs(ETH_P_IP) && ip_hdr(skb)->version == 4;
+	return skb->protocol == htons(ETH_P_IP) && ip_hdr(skb)->version == 4;
 }
 
 static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)