1 files changed, 9 insertions, 0 deletions

diff --git a/include/net/ip.h b/include/net/ip.h
index af8addbaa3c1..746abff9ce51 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -26,12 +26,14 @@
 #include <linux/ip.h>
 #include <linux/in.h>
 #include <linux/skbuff.h>
+#include <linux/jhash.h>
 
 #include <net/inet_sock.h>
 #include <net/route.h>
 #include <net/snmp.h>
 #include <net/flow.h>
 #include <net/flow_dissector.h>
+#include <net/netns/hash.h>
 
 #define IPV4_MAX_PMTU           65535U          /* RFC 2675, Section 5.1 */
 #define IPV4_MIN_MTU            68                      /* RFC 791 */
@@ -522,6 +524,13 @@ static inline unsigned int ipv4_addr_hash(__be32 ip)
         return (__force unsigned int) ip;
 }
 
+static inline u32 ipv4_portaddr_hash(const struct net *net,
+                                     __be32 saddr,
+                                     unsigned int port)
+{
+        return jhash_1word((__force u32)saddr, net_hash_mix(net)) ^ port;
+}
+
 bool ip_call_ra_chain(struct sk_buff *skb);
 
 /*