+#ifdef HAVE_TCP_SENDPAGE_USE_SOCKET
+# define cfs_tcp_sendpage(sk, page, offset, size, flags) \
+ tcp_sendpage((sk)->sk_socket, page, offset, size, flags)
+#else /* !HAVE_TCP_SENDPAGE_USE_SOCKET */
+# define cfs_tcp_sendpage(sk, page, offset, size, flags) \
+ tcp_sendpage(sk, page, offset, size, flags)
+#endif /* HAVE_TCP_SENDPAGE_USE_SOCKET */
+
+/* assume one thread for each connection type */
+#define SOCKNAL_NSCHEDS 3
+#define SOCKNAL_NSCHEDS_HIGH (SOCKNAL_NSCHEDS << 1)
+