FreeBSD 9.0-R em0 issues?

[Hooman Fazaeli]

On 8/10/2012 11:24 PM, Karl Pielorz wrote:
>
> Hi,
>
> Apologies for posting to -net as well - I originally posted this to -hackers, but was advised to re-post it here...
>
> A FreeBSD 9.0-R amd64 box - based on a SuperMicro X8DTL-IF Rev. 2.01 w/Intel  L5630 & 6Gb of RAM seems to have issues with it's onboard NIC (em driver based - i.e. em0).
>
> The machine runs fine - but then suddenly loses all network connectivity. Nothing is logged on the console, or /var/log/messages.
>
> Doing an 'infconfig em0 down' then up, doesn't fix it. Rebooting the box does fix it "for a while". Having dug around Google - I've now set "hw.em.enable_msix=0" - the box ran the whole of the day 
> with that set, before again - having em0 wedge up.
>
> When it does this 'netstat -n -i' returns "silly" figures - i.e. if I catch it even moments after it's done it - it'll claim to have suffered billions of input/output and collision errors (huge 
> amounts more than the amount of traffic that machine would have handled) - e.g.
>
> "
> Name    Mtu Network       Address              Ipkts Ierrs Idrop    Opkts Oerrs  Coll
> em0    1500 <Link#5>      00:25:90:31:82:46 355482 10612864185945     0 291109 3032246910270 1516123455135
> "
82574L with ASPM enabled is known to cause a problem like yours.
(See:http://www.google.com/#hl=en&sclient=psy-ab&q=82574L+%2B+ASPM <http://www.google.com/#hl=en&sclient=psy-ab&q=82574L+%2B+ASPM>)
However, some time ago, jack committed a fix which disabled ASPM to fix the problem.
I recommend getting and compiling latest e1000 source from CVS (which is version 7.3.2)
and see what happens.