1 files changed, 3 insertions, 0 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 867557b4244a..c0258100d70c 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -212,6 +212,9 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 /* TCP initial congestion window as per draft-hkchu-tcpm-initcwnd-01 */
 #define TCP_INIT_CWND           10
 
+/* Bit Flags for sysctl_tcp_fastopen */
+#define TFO_CLIENT_ENABLE       1
+
 extern struct inet_timewait_death_row tcp_death_row;
 
 /* sysctl variables for tcp */