possible em regression (was Re: svn commit: r294958 - in stable/10: share/man/man4 sys/dev/e1000 sys/dev/ixgb sys/dev/netmap)

[mike tancsa]

Thanks, I will apply and try it early Monday morning !



On January 30, 2016 12:26:31 PM Marius Strobl <marius at alchemy.franken.de> 
wrote:

> On Sat, Jan 30, 2016 at 11:47:19AM -0500, Mike Tancsa wrote:
>> On 1/29/2016 8:23 PM, Marius Strobl wrote:
>> > On Fri, Jan 29, 2016 at 03:41:57PM -0500, Mike Tancsa wrote:
>> >>
>> >> No multi queue. Stock GENERIC kernel with a couple of things removed.
>> >> hw.em are just the defaults. I will try without TSO
>> >>
>> >> % ifconfig em0
>> >> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>> >>
>> >> 
>> options=4209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWTSO>
>> >>
>> >
>> > Hrm, that's strange, TSO4 should be enabled by default so apparently
>> > you are already disabling it; what is the behavior if you turn it on?
>> > Do you use a < Gigabit link?
>>
>> Hi Marius,
>> 	Thanks for looking. The ifconfig output was after I turned off tso as
>> Harry suggested to try.  Its been 24hrs and I have not seen any resets.
>>  I will wait another 36hrs or so and then turn it back on to see if the
>> problem comes back.
>>
>> this link is 100Mb.
>
> Ah, okay, that at least makes sense. Can you please verify that with
> the attached patch applied, you have a setup that works out of the
> box?
>
> Marius
>