add TCP_NOTSENT_LOWAT tcp socket option, new in linux v3.12

diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h
index 6f75eb32b84344641b7bae93231252a2fe6c09f3..5212ef71d19f20694c702cd835d87d367c8b4c72 100644 (file)
--- a/include/netinet/tcp.h
+++ b/include/netinet/tcp.h
@@ -26,6 +26,7 @@
 #define TCP_REPAIR_OPTIONS 22
 #define TCP_FASTOPEN     23
 #define TCP_TIMESTAMP    24
+#define TCP_NOTSENT_LOWAT 25
 
 #define TCP_ESTABLISHED  1
 #define TCP_SYN_SENT     2