Re: nfe(4) hardware checksum support

On 3-Feb-07, at 10:46 PM, Izumi Tsutsui wrote:

> jmarinembedtronics.fi wrote:
>
>> I applied the patch today and built a new kernel
from the -current  
>> sources
>> of today.  Unfortunately, the patch doesn't seem to
fix the problem.
>> When accessing two NFS servers simultaneously,
packet reception stops
>> every now and then for about 30 seconds at a time.
>
> Hmm, I'm afraid it's difficult to debug it only by code
inspection,
> but could you check which TX or RX could cause problem
(by ttcp etc.)
> and interrupt/network statistics during stall (by
vmstat -i or
> netstat -i etc.)?
>
> If FreeBSD or OpenBSD have the similar problem, maybe
> we need chip docs (there are several magic in the
source).

Not sure if it's related, but you might want to have a look
at the  
DragonFly modifications to the nfe driver to prevent
watchdog timeouts:

http://www.dragonflybsd.org/cvsweb/src/sys/dev
/netif/nfe/if_nfe.c? 
rev=1.1&content-type=text/x-cvsweb-markup

Cheers,
Jared

jmcneillinvisible.ca wrote:

> Not sure if it's related, but you might want to have a
look at the  
> DragonFly modifications to the nfe driver to prevent
watchdog timeouts:

I think this has been pulled via OpenBSD in if_nfe.c rev
1.11.
(though I have not checked their other changes yet)
---
Izumi Tsutsui