Linux-Hams archive - August 1997: Re: SCC: And now it crashes (sigh!!)..

Re: SCC: And now it crashes (sigh!!)..

Luca Palazzo (ywxrirv@paintsandsolvents.com)
Sun, 10 Aug 1997 13:26:57 +0200


Richard Adams wrote:

> According to Luca Palazzo, While burning my cpu.:
> >
> > Hallo Everyone...
> >
> > When i try to connect another station, usually linux crashes....
> > After millions of test i've noted this:
> > Linux crashes when there are both rx interrupts and tx interrupts...
> > If i only receive or transmit no problem.. When i try to connect another
> > station while scc is receiving, the computer reboots...
> > This does not happen on p133....
> >
> Make sure you have allocated enough buffers in /etc/z8530drv.conf and make
> sure the bufsize is at least 148 bytes larger than your MTU.
> Ie,
>

The mtu is set to 256 and the bufsize to 384....I've setted rxbuff and txbuff
to 12... the same crash when scc is receiving and i try to connect...
If i rx without tx or tx without rx everything is perfect.....

>

Some other help??Thanks Richard
Luca

> bufsize 656 minumum for a MTU of 512
> rxbuffers 12
> txbuffers 12
>
> The defaults can be seen in scc.c
>
> >
> > It's now an irq problem surely!! But i don't know if the first cause is
> > the pc or the groups Linux-PC-sccinit...
> >
> > Where may i found some debug infos on this crashes?? Please note that i've
> > no oops on Linux...
> > I tried to define SCC_DEBUG... But i've not found anything in log's
> > files....
> >
> syslog.
>
> > Thanks
> > Luca
> >
>
> --
> Regards Richard, 73. | "I see" said the blind man to his
> AX25 pa3gcu@pi8mid.#zld.nld.eu | deaf en dumb daughter, who replyed,
> smtp lrbhafvv@komterm.cz | "Yes" Linux AX25. NET/ROM, "I have heard
> inet ehcp.bushub@meteo.pt | that what you see is what you get".

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