diff options
| -rw-r--r-- | zaptel.c | 16 | ||||
| -rw-r--r-- | zaptel.h | 9 |
2 files changed, 23 insertions, 2 deletions
@@ -1031,7 +1031,7 @@ static void close_channel(struct zt_chan *chan) chan->txgain = defgain; chan->gainalloc = 0; chan->eventinidx = chan->eventoutidx = 0; - chan->flags &= ~(ZT_FLAG_LINEAR | ZT_FLAG_PPP | ZT_FLAG_SIGFREEZE); + chan->flags &= ~(ZT_FLAG_LOOPED | ZT_FLAG_LINEAR | ZT_FLAG_PPP | ZT_FLAG_SIGFREEZE); zt_set_law(chan,0); @@ -4371,6 +4371,16 @@ static int zt_chan_ioctl(struct inode *inode, struct file *file, unsigned int cm put_user(chan->rxsig, (int *)data); rv = 0; break; + case ZT_LOOPBACK: + get_user(j, (int *)data); + spin_lock_irqsave(&chan->lock, flags); + if (j) + chan->flags |= ZT_FLAG_LOOPED; + else + chan->flags &= ~ZT_FLAG_LOOPED; + spin_unlock_irqrestore(&chan->lock, flags); + rv = 0; + break; case ZT_HOOK: get_user(j,(int *)data); if (chan->flags & ZT_FLAG_CLEAR) @@ -5163,6 +5173,10 @@ out in the later versions, and is put back now. */ zt_init_tone_state(&ms->ts, ms->curtone); } } + } else if (ms->flags & ZT_FLAG_LOOPED) { + for (x = 0; x < bytes; x++) + txb[x] = ms->readchunk[x]; + bytes = 0; } else if (ms->flags & ZT_FLAG_HDLC) { for (x=0;x<bytes;x++) { /* Okay, if we're HDLC, then transmit a flag by default */ @@ -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; |