Re: [E1000-devel] "e1000_clean_tx_irq: Detected Tx Unit Hang"errors only on pppoe connect

[snowcrash+e1000 <sch...@gm...>]

re: tcpdump

on,

	sh pppoe-start

syslog reports the now usual,


	Mar 28 15:21:11 fw kernel: e1000: eth0: e1000_watchdog_task: NIC Link
is Up 100 Mbps Full Duplex, Flow Control: None
	Mar 28 15:21:42 fw xinetd[1353]: START: ssh pid=2086 from=10.0.0.101
	Mar 28 15:21:47 fw kernel: device eth0 entered promiscuous mode
	Mar 28 15:21:47 fw kernel: audit(1206742847.628:11): dev=eth0
prom=256 old_prom=0 auid=4294967295
	Mar 28 15:21:52 fw pppd[2164]: pppd 2.4.4 started by root, uid 0
	Mar 28 15:21:52 fw pppd[2164]: Using interface ppp0
	Mar 28 15:21:52 fw pppd[2164]: Connect: ppp0 <--> /dev/pts/3
	...
	Mar 28 15:22:41 fw kernel: e1000: eth0: e1000_clean_tx_irq: Detected
Tx Unit Hang
	Mar 28 15:22:41 fw kernel:   Tx Queue             <0>
	Mar 28 15:22:41 fw kernel:   TDH                  <1>
	Mar 28 15:22:41 fw kernel:   TDT                  <1>
	Mar 28 15:22:41 fw kernel:   next_to_use          <1>
	Mar 28 15:22:41 fw kernel:   next_to_clean        <0>
	Mar 28 15:22:41 fw kernel: buffer_info[next_to_clean]
	Mar 28 15:22:41 fw kernel:   time_stamp           <1000f4833>
	Mar 28 15:22:41 fw kernel:   next_to_watch        <0>
	Mar 28 15:22:41 fw kernel:   jiffies              <1000f6058>
	Mar 28 15:22:41 fw kernel:   next_to_watch.status <0>
	Mar 28 15:22:42 fw kernel: NETDEV WATCHDOG: eth0: transmit timed out
	Mar 28 15:22:44 fw kernel: e1000: eth0: e1000_watchdog_task: NIC Link
is Up 100 Mbps Full Duplex, Flow Control: None
	Mar 28 15:22:51 fw pppd[2250]: LCP: timeout sending Config-Requests
	Mar 28 15:22:51 fw pppd[2250]: Connection terminated.
	Mar 28 15:22:51 fw pppd[2250]: Modem hangup
	Mar 28 15:22:55 fw pppoe[2253]: Timeout waiting for PADO packets
	Mar 28 15:22:55 fw pppd[2250]: Exit.

and, tcpdump reports, simply,

	tcpdump -i eth0 -vvv
		tcpdump: WARNING: eth0: no IPv4 address assigned
		tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
		15:22:20.392061 PPPoE PADI [Service-Name] [Host-Uniq 0xCD080000]
		15:22:35.390525 PPPoE PADI [Service-Name] [Host-Uniq 0xCD080000]

which, to me doesn't look like any traffic.

note the "EN10MB" <-- why is that "10", not "100" ?