Re: 2.6.6 e1000 NETDEV WATCHDOG: eth0: transmit timed out

OK
Thanks for the pointers and time Stephen, much appreciated :)

Ganesh and Jens - you said you'd like to keep this on-list so Stephen 
let's ensure your reply is archived...


David


Stephen Hemminger wrote:

It will be up to Intel (Genesh et al) to look at this.


On Fri, 18 Jun 2004 19:44:10 +0100
David Greaves [off-list ref] wrote:

 

quoted

Stephen Hemminger wrote:

   

quoted

To get to the root of these problems, could you:

* Give full lspci -v output for the boards in question.


     

ash:
00:07.0 Ethernet controller: Intel Corp.: Unknown device 1076
       Subsystem: Intel Corp.: Unknown device 1176
       Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 11
       Memory at e3020000 (32-bit, non-prefetchable) [size=128K]
       Memory at e3000000 (32-bit, non-prefetchable) [size=128K]
       I/O ports at b400 [size=64]
       Expansion ROM at <unassigned> [disabled] [size=128K]
       Capabilities: [dc] Power Management version 2
       Capabilities: [e4] PCI-X non-bridge device.
       Capabilities: [f0] Message Signalled Interrupts: 64bit+ 
Queue=0/0 Enable-

   

quoted

Jun 18 19:38:18 ash kernel: eth0: may be hung last tx was 2457 ticks

   

This means the code that in the e1000 watchdog is seeing the stuck board.
The driver then calls netif_stop_queue which seems odd.

 

quoted

Jun 18 19:38:20 ash kernel: eth0: may be hung last tx was 4457 ticks
Jun 18 19:38:22 ash kernel: eth0: may be hung last tx was 6457 ticks
Jun 18 19:38:24 ash kernel: eth0: may be hung last tx was 8457 ticks
Jun 18 19:38:26 ash kernel: NETDEV WATCHDOG: eth0: transmit timed out 
after 5000 j
iffies
Jun 18 19:38:26 ash kernel: eth0: transmit timeout from queuing
Jun 18 19:38:26 ash kernel: eth0: may be hung last tx was 10457 ticks
Jun 18 19:38:26 ash kernel: eth0: state=0x7 transmit ring size=4096 
count=256 to_u
se=66 to_clean=59
   

The state bits show:
XOFF - stopped (but that was done in e1000_watchdog)
START - board is running
PRESENT - board is present.
That looks okay, but what was the state in the e1000 watchdog??