hello
Recently, we encountered an abnormal problem with the ethernet eth0.
it can't send packets but can receive packets. We analyzed and found：
1、The interrupt eth0_g_tx has no changed；
2、Transmit status register (eTSECx_TSTAT) always is 00 00 ff 00
3、kernel code sch_generic.c-->dev_watchdog Masked timeout processing logic
if (some_queue_timedout) {
char drivername[64];
WARN_ONCE(1, KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit queue %u timed out\n",
dev->name, netdev_drivername(dev, drivername, 64), i);
/* dev->netdev_ops->ndo_tx_timeout(dev); */
}
My questions:
1、Under what conditions will this problem occur?
2、Is the timeout processing to solve this problem?
3、Is the chip itself defective?
