[MINOR] added the "tcpsplice" option
it does nothing yet except set the minimal options.
diff --git a/include/types/backend.h b/include/types/backend.h
index f70a370..d6079ad 100644
--- a/include/types/backend.h
+++ b/include/types/backend.h
@@ -57,6 +57,7 @@
#define PR_O_TPXY_CIP 0x04000000 /* bind to the client's IP address when connect()ing */
#define PR_O_TPXY_CLI 0x06000000 /* bind to the client's IP+port when connect()ing */
#define PR_O_TPXY_MASK 0x06000000 /* bind to a non-local address when connect()ing */
+#define PR_O_TCPSPLICE 0x08000000 /* delegate data transfer to linux kernel's tcp_splice */
#endif /* _TYPES_BACKEND_H */