This may be caused by DMA alignment problems.
See
https://docs.freebsd.org/cgi/getmsg.cgi?fetch=145859+0+archive/2015/freebsd-stable/20150419.freebsd-stable
for a recent thread about the msk driver. The msk maintainer Yonghyeon
Pyun has opted for super safe options of 32K alignment!
It's a long shot, but you could try increasing BCE_DMA_ALIGN and/or
BCE_RX_BUF_ALIGN in the include file if_bcereg.h, say up to 4096, to see
whether it makes any difference.
- Gareth.
On 21/04/2015 10:52, Alnis Morics wrote:
On 04/21/2015 06:17 AM, Chris Ross wrote:
I got a new [to me] system recently, a Dell PE 1950. It has two
bce parts on the motherboard that identify as:
bce#: <QLogic NetXtreme II BCM5708 1000Base-T (B2)>
The OS I installed and kernel I'm running are from a download of a
10.1 STABLE ISO, r281235, April 7, 2015.
I had gone on to check out a newer stable from subversion, and
build a custom kernel, but when I booted that one I got a bce0 that
didn't seem to work, and kept emitting:
bce0: /usr/src/sys/dev/bce/if_bce.c(7869): Watchdog timeout occurred,
resetting!
bce0: link state changed to DOWN
bce0: link state changed to UP
So, I fell back. But I've since noticed that even the original
kernel seems to do this after booting. I'm not yet running any
notable amount of traffic through the system, but intend to make it
an edge router, so certainly will be.
Is there any sort of issue noted in the bce driver in recent
days/weeks/months? Are other folks seeing this diagnostic/error?
I'll do a little more testing and see if I'm seeing it more or
less often, but I know that in at least some cases the interface has
flapped like this after boot for long enough that I was unable to get
connected remotely, and resorted to a console login to reboot.
- Chris
There are "Watchdog timeout" errors with some msk NICs. Both msk and
bce are dependent on MII bus code (see /usr/src/sys/amd64/conf/GENERIC)
-Alnis
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