sockets: define NETLINK_SOCK_DIAG in sockets.h

sockets.c: In function ‘preload_socket_modules’:
sockets.c:153:36: error: ‘NETLINK_SOCK_DIAG’ undeclared (first use in this function)
sockets.c:153:36: note: each undeclared identifier is reported only once for each function it appears in

Reported-by: Mr Travis
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-check.c

@@ -94,10 +94,6 @@ static int check_map_files(void)
 	return -1;
 }
 
-#ifndef NETLINK_SOCK_DIAG
-#define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
-#endif
-
 static int check_sock_diag(void)
 {
 	int ret;

include/sockets.h

@@ -83,4 +83,8 @@ static inline int sk_decode_shutdown(int val)
 
 #define USK_EXT_PARAM "ext-unix-sk"
 
+#ifndef NETLINK_SOCK_DIAG
+#define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
+#endif
+
 #endif /* __CR_SOCKETS_H__ */

net.c

@@ -26,10 +26,6 @@
 #include "protobuf.h"
 #include "protobuf/netdev.pb-c.h"
 
-#ifndef NETLINK_SOCK_DIAG
-#define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
-#endif
-
 static int ns_fd = -1;
 static int ns_sysfs_fd = -1;