igb and ALTQ in 9.1-rc3

[Nick Rogers]

On Thu, Mar 28, 2013 at 4:16 PM, Jack Vogel <jfvogel at gmail.com> wrote:
> Have been kept fairly busy with other matters, one thing I could do short
> term is
> change the defines in igb the way I did in the em driver so you could still
> define
> the older if_start entry. Right now those are based on OS version and so you
> will
> automatically get if_transmit, but I could change it to be IGB_LEGACY_TX or
> so,
> and that could be defined in the Makefile.
>
> Would this help?

I'm currently using ALTQ successfully with the em driver, so if igb
behaved the same with respect to using if_start instead of if_transmit
when ALTQ is in play, that would be great. I do not completely
understand the change you propose as I am not very familiar with the
driver internals. Any kind of patch or extra Makefile/make.conf
definition that would allow me to build a 9-STABLE kernel with an igb
driver that works again with ALTQ, ASAP, would be much appreciated.

>
> Jack
>
>
>
> On Thu, Mar 28, 2013 at 2:31 PM, Nick Rogers <ncrogers at gmail.com> wrote:
>>
>> On Tue, Dec 11, 2012 at 1:09 AM, Jack Vogel <jfvogel at gmail.com> wrote:
>> > On Mon, Dec 10, 2012 at 11:58 PM, Gleb Smirnoff <glebius at freebsd.org>
>> > wrote:
>> >
>> >> On Mon, Dec 10, 2012 at 03:31:19PM -0800, Jack Vogel wrote:
>> >> J> UH, maybe asking the owner of the driver would help :)
>> >> J>
>> >> J> ... and no, I've never been aware of doing anything to stop
>> >> supporting
>> >> altq
>> >> J> so you wouldn't see any commits. If there's something in the altq
>> >> code
>> >> or
>> >> J> support (which I have nothing to do with) that caused this no-one
>> >> informed
>> >> J> me.
>> >>
>> >> Switching from if_start to if_transmit effectively disables ALTQ
>> >> support.
>> >>
>> >> AFAIR, there is some magic implemented in other drivers that makes them
>> >> modern (that means using if_transmit), but still capable to switch to
>> >> queueing
>> >> mode if SIOCADDALTQ was casted upon them.
>> >>
>> >>
>> > Oh, hmmm, I'll look into the matter after my vacation.
>> >
>> > Jack
>>
>> Has there been any progress on resolving this issue? I recently ran
>> into this problem upgrading my servers from 8.3 to 9.1-RELEASE and am
>> wondering what the latest recommendation is. I've used ALTQ and igb
>> successfully for years and it is unfortunate it no longer works.
>> Appreciate any advice.
>>
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>
>