/* parse tty input stream */
static void slcan_unesc(struct slcan *sl, unsigned char s)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
struct net_device_stats *stats = slc_get_stats(sl->dev);
#else
struct net_device_stats *stats = &sl->dev->stats;
#endif
if ((s == '\r') || (s == '\a')) { /* CR or BEL ends the pdu */
if (!test_and_clear_bit(SLF_ERROR, &sl->flags) &&
(sl->rcount > 4)) {
slc_bump(sl);
}
sl->rcount = 0;
} else {
if (!test_bit(SLF_ERROR, &sl->flags)) {
if (sl->rcount < SLC_MTU) {
sl->rbuff[sl->rcount++] = s;
return;
} else {
stats->rx_over_errors++;
set_bit(SLF_ERROR, &sl->flags);
}
}
}
}
/* parse tty input stream */
static void slcan_unesc(struct slcan *sl, unsigned char s)
{
if ((s == '\r') || (s == '\a')) { /* CR or BEL ends the pdu */
if (!test_and_clear_bit(SLF_ERROR, &sl->flags) &&
(sl->rcount > 4)) {
slc_bump(sl);
}
sl->rcount = 0;
} else {
if (!test_bit(SLF_ERROR, &sl->flags)) {
if (sl->rcount < SLC_MTU) {
sl->rbuff[sl->rcount++] = s;
return;
} else {
sl->dev->stats.rx_over_errors++;
set_bit(SLF_ERROR, &sl->flags);
}
}
}
}
