X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7d758a6a6842fac6c511039c29d76300e2e21ccd..e99a3a6cbb83db9934b97ddac837ab37cb9e4719:/src/OS/os.h-Linux

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index 57034649c..f6d35772b 100644
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -72,11 +72,14 @@ then change the 0 to 1 in the next block. */
 # define EXIM_HAVE_OPENAT
 #endif
 
+/* TCP Fast Open support */
+
 #include <netinet/tcp.h>	/* for TCP_FASTOPEN */
 #include <sys/socket.h>		/* for MSG_FASTOPEN */
 #if defined(TCP_FASTOPEN) && !defined(MSG_FASTOPEN)
 # define MSG_FASTOPEN 0x20000000
 #endif
+#define EXIM_HAVE_TCPI_UNACKED
 
 
 /* End */