Re: call for sk(4) testers

On Mon, Mar 20, 2006 at 04:11:59PM +0900, Pyun YongHyeon wrote..
> On Mon, Mar 20, 2006 at 07:26:48AM +0100, Frank Behrens wrote:
>  > Pyun YongHyeon <pyunyh_at_gmail.com> wrote on 20 Mar 2006 10:36:
>  > > Thanks for your report.
>  > > If you find any unusual things related with sk(4) please let me know.
>  > 
>  > Unfortunalety I must report an issue. Yesterday I had after several 
>  > weeks of fine running:
>  > Mar 19 17:59:08 <kern.crit> moon kernel: sk0: watchdog timeout
>  > Mar 19 17:59:08 <kern.notice> moon kernel: sk0: link state changed to DOWN
>  > 
> 
> Stock sk(4) had a flaw on sending TX command to NIC due to hardware
> related races. Rev. 1.90 of if_sk.c tried to fix it by keep resending
> the start TX command if driver detects pending packets to be
> transmitted. Since the check is done in interrupt handler it would
> fail to detect the stuck condition if the first TX command was lost.
> I modified the driver to enable a TX polling timer to reissue TX
> command periodically as stated in SK NET GENESIS data sheet.
> New driver is available at:
> http://people.freebsd.org/~yongari/sk/if_sk.c
> http://people.freebsd.org/~yongari/sk/if_skreg.h
> 
>  > The problem is not the watchdog timeout message itself, but that the 
> 
> No. The watchdog timeout message is serious one. It wouldn't recover
> from its stuck state without manual interface down/up procedure.
> 
>  > links goes down. Fortunately I have in my crontab still a "safety 
>  > belt", calling every 12 minutes
>  > (ifconfig sk0 | fgrep active >/dev/null) || (ifconfig sk0 down; ifconfig sk0 up; ifconfig sk0)
>  > 
>  > So the system could recover without user interaction:
>  > Mar 19 18:12:01 <kern.notice> moon kernel: sk0: link state changed to UP
>  > Mar 19 18:12:01 <kern.crit> moon kernel: sk0: phy failed to come ready
>  > 
> 
> Yup, this is one thing I'd like to fix.
> >From time to time I saw the PHY message during sk(4) module load but
> it seems to work correctly in spite of the dereadful message(I think
> the same thing happens on stock driver too). So I guess you may
> safely ignore that message.
> 
> If you still see "watchdog timeout message" please let me know.

Assuming it works it would be neat if we could get it into RELENG_6
soon.

thanks,
Wilko

-- 
Wilko Bulte				wilko_at_FreeBSD.org