int linux_tstc(int fd)
{
struct timeval tv = {
.tv_usec = 100,
};
fd_set rfds;
int ret;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
/*
* We set the timeout here to 100us, because otherwise
* barebox would eat all cpu resources while waiting
* for input.
*/
ret = select(fd + 1, &rfds, NULL, NULL, &tv);
if (ret)
return 1;
return 0;
}
int ctrlc(void)
{
char chr;
if (linux_read_nonblock(0, &chr, 1) == 1 && chr == 3)
return 1;
return 0;
}
int tap_eth_rx (struct eth_device *edev)
{
struct tap_priv *priv = edev->priv;
int length;
length = linux_read_nonblock(priv->fd, NetRxPackets[0], PKTSIZE);
if (length > 0)
net_receive(NetRxPackets[0], length);
return 0;
}