TFO: on FreeBSD avoid client TFO-mode connects unless a TCP_FASTOPEN setsocketopt...

[users/jgh/exim.git] / src / OS / os.h-FreeBSD

diff --git a/src/OS/os.h-FreeBSD b/src/OS/os.h-FreeBSD
index 9b47de3d10b62929a5cd3c89f4d9e636b049d71c..7cb836cbebb35360f87db2a289d8545e655c7fab 100644 (file)
--- a/src/OS/os.h-FreeBSD
+++ b/src/OS/os.h-FreeBSD
@@ -43,4 +43,23 @@ performance on outgoing mail a bit. */
 #define OS_SENDFILE
 extern ssize_t os_sendfile(int, int, off_t *, size_t);
 
+
+/*******************/
+
+/* TCP_FASTOPEN support.  There does not seems to be a
+MSG_FASTOPEN defined yet... */
+#define EXIM_TFO_PROBE
+
+#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
+ 
+/* for TCP state-variable values, for TFO logging */
+#include <netinet/tcp_fsm.h>
+#define TCP_SYN_RECV TCPS_SYN_RECEIVED
+
+/*******************/
+
 /* End */