/********************************************************************
*
* get_loop_output - get outgoing packets from the ppp device,
* and detect when we want to bring the real link up.
* Return value is 1 if we need to bring up the link, 0 otherwise.
*/
int
get_loop_output(void)
{
int rv = 0;
int n;
if (new_style_driver) {
while ((n = read_packet(inpacket_buf)) > 0)
if (loop_frame(inpacket_buf, n))
rv = 1;
return rv;
}
while ((n = read(master_fd, inbuf, sizeof(inbuf))) > 0)
if (loop_chars(inbuf, n))
rv = 1;
if (n == 0)
fatal("eof on loopback");
if (errno != EWOULDBLOCK)
fatal("read from loopback: %m(%d)", errno);
return rv;
}
/*
* get_loop_output - read characters from the loopback, form them
* into frames, and detect when we want to bring the real link up.
* Return value is 1 if we need to bring up the link, 0 otherwise.
*/
int
get_loop_output(void)
{
int rv = 0;
int n;
while ((n = read(loop_master, inbuf, sizeof(inbuf))) >= 0) {
if (loop_chars(inbuf, n))
rv = 1;
}
if (n == 0)
fatal("eof on loopback");
if (errno != EWOULDBLOCK)
fatal("read from loopback: %m");
return rv;
}
