soreuseport: infrastructure

Definitions and macros for implementing soreusport.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/ia64/include/uapi/asm/socket.h

@@ -31,7 +31,7 @@
 #define SO_PRIORITY	12
 #define SO_LINGER	13
 #define SO_BSDCOMPAT	14
-/* To add :#define SO_REUSEPORT 15 */
+#define SO_REUSEPORT	15
 #define SO_PASSCRED	16
 #define SO_PEERCRED	17
 #define SO_RCVLOWAT	18