cvs commit: src/sys/dev/bfe if_bfe.c if_bfereg.h
silby at silby.com
Mon May 8 16:43:17 UTC 2006
On Mon, 8 May 2006, Makoto Matsushita wrote:
>> Revision Changes Path
>> 1.37 +20 -15 src/sys/dev/bfe/if_bfe.c
>> 1.8 +2 -2 src/sys/dev/bfe/if_bfereg.h
> After commiting this change, my bfe device is not working; when the interface
> is up via ifconfig(8), following message is shown and no in/out packets thru
> the interface:
> May 8 17:36:18 hostname kernel: Interrupt storm detected on "irq10:";
> throttling interrupt source
> However, backout if_bfereg.h rev 1.8 changes, the interface is working again
> as expected... Did you know why?
> Makoto `MAR' Matsushita
The interrupt storm results whenever the bfe chip is unhappy with the
RX/TX buffers that we give it. I'm not sure why the change to bfereg
would make it unhappy.
Can you tell the me the following:
1. How much RAM does your system have?
2. What revision of the bfe chip do you have, according to dmesg?
Then, if you're sure it's the if_bfereg.h change and not the if_bfe.c
change that causes the problem, try playing with the values of
BFE_TX_LIST_CNT and BFE_RX_LIST_CNT - those are the only two values that
changed. I changed them from 511 to 128. You could try values like 127,
255, 256, 510... see if any/all of those work.
Sorry for causing trouble for you, these chips seem very finicky.
Mike "Silby" Silbersack
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