Add support for looping back a single channel

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@1310 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 8 insertions, 1 deletions

diff --git a/zaptel.h b/zaptel.h
index 1c034b9..22679d2 100644
--- a/zaptel.h
+++ b/zaptel.h
@@ -614,6 +614,12 @@ struct zt_versioninfo {
 #define ZT_GETVERSION _IOR(ZT_CODE, 57, struct zt_versioninfo)
 
 /*
+ * Put the channel in loopback mode (receive from the channel is
+ * transmitted back on the interface)
+ */
+#define ZT_LOOPBACK _IOW(ZT_CODE, 58, int)
+
+/*
  *  60-80 are reserved for private drivers
  *  80-85 are reserved for dynamic span stuff
  */
@@ -1070,7 +1076,7 @@ struct zt_chan {
 	u_char swritechunk[ZT_MAX_CHUNKSIZE];	/* Buffer to be written */
 	u_char *readchunk;						/* Actual place to read from */
 	u_char sreadchunk[ZT_MAX_CHUNKSIZE];	/* Preallocated static area */
-	
+
 	/* Pointer to tx and rx gain tables */
 	u_char *rxgain;
 	u_char *txgain;
@@ -1281,6 +1287,7 @@ typedef enum {
 #define ZT_FLAG_T1PPP			(1 << 15)
 #define ZT_FLAG_SIGFREEZE		(1 << 16)	/* Freeze signalling */
 #define ZT_FLAG_NOSTDTXRX		(1 << 17)	/* Do NOT do standard transmit and receive on every interrupt */
+#define ZT_FLAG_LOOPED			(1 << 18)	/* Loopback the receive data from the channel to the transmit */
 
 struct zt_span {
 	spinlock_t lock;