Error: em0: Watchdog timeout -- resetting

[Vladislav V. Prodan]

Add to /etc/rc.local :
ifconfig em0 debug
ifconfig em0 media 100baseTX mediaopt full-duplex

For in rc.conf not working these options:
#ifconfig_em0="100baseTX mediaopt full-duplex"
#ifconfig_em0="debug -vlanmtu -vlanhwtag -vlanhwfilter -vlanhwtso -wol"

Now the network card looks like this:
# ifconfig em0 | grep -v inet
em0: flags=8847<UP,BROADCAST,DEBUG,RUNNING,SIMPLEX,MULTICAST> metric 0
mtu 1500

options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>
        ether 00:25:90:05:83:7a
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet 100baseTX <full-duplex>
        status: active


25.08.2010 0:57, Vladislav V. Prodan wrote:
> The server is sometimes off the network card.
> It helps just to restart via KVM-IPMI.
> 
> MotherBoard: X8SIL/X8SIL-F
> BIOS Version:	1.0c
> Build Date:	02/05/10
> 
> OS: FreeBSD 8.1-RELEASE, FreeBSD 8.1-STABLE, FreeBSD 9.0-CURRENT
> 
> What would you recommend to address the problem?
> 
> 
> # uname -a
> FreeBSD solo.XXX.biz 9.0-CURRENT FreeBSD 9.0-CURRENT #0: Tue Aug 24
> 15:52:21 EEST 2010     root at solo.XXX.biz:/usr/obj/usr/src/sys/solo.2  amd64
> 
> #pciconf -lv
> ...
> em0 at pci0:2:0:0: class=0x020000 card=0x060515d9 chip=0x10d38086 rev=0x00
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
>     class      = network
>     subclass   = ethernet
> em1 at pci0:3:0:0: class=0x020000 card=0x060515d9 chip=0x10d38086 rev=0x00
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
>     class      = network
>     subclass   = ethernet
> ...
> 
> In /usr/src/sys/dev/e1000/if_em.c:
> 
> static void
> em_local_timer(void *arg)
> {
> 	struct adapter	*adapter = arg;
> 	struct ifnet	*ifp = adapter->ifp;
> 	struct tx_ring	*txr = adapter->tx_rings;
> 
> 	EM_CORE_LOCK_ASSERT(adapter);
> 
> 	em_update_link_status(adapter);
> 	em_update_stats_counters(adapter);
> 
> 	/* Reset LAA into RAR[0] on 82571 */
> 	if (e1000_get_laa_state_82571(&adapter->hw) == TRUE)
> 		e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
> 
> 	/*
> 	** Check for time since any descriptor was cleaned
> 	*/
> 	for (int i = 0; i < adapter->num_queues; i++, txr++) {
> 		EM_TX_LOCK(txr);
> 		if (txr->watchdog_check == FALSE) {
> 			EM_TX_UNLOCK(txr);
> 			continue;
> 		}
> 		if ((ticks - txr->watchdog_time) > EM_WATCHDOG)
> 			goto hung;
> 		EM_TX_UNLOCK(txr);
> 	}
> 
> 	callout_reset(&adapter->timer, hz, em_local_timer, adapter);
> 	return;
> hung:
> 	device_printf(adapter->dev, "Watchdog timeout -- resetting\n");
> 	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
> 	adapter->watchdog_events++;
> 	EM_TX_UNLOCK(txr);
> 	em_init_locked(adapter);
> }
> 
> Someone will finish the piece for debugging, to further diagnose the error?
> 
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> 
>