LACP BPDU packets priority?

[Johannes Lundberg]

Thanks Mark! That is great information.

Do you know what the iflib option is to control this?


On 2/4/21 3:33 PM, Saad, Mark wrote:
> Johannes
>    This is dependent on the NIC Driver.  Chelsio's have a option to prioritize "slow-protocols"
> into a dedicated queue.  The iflib drivers I believe in 12-STABLE and newer have this ability as well.
> Non iflib nics like Solarflare do not have any way to prioritize this and 11-STABLE does not have it at all.
>
> For the Chelsios you need to set hw.cxgbe.rsrv_noflowq=1" in /boot/loader.conf or use kenv to set it before loading the
> module.
>
>
>
> ---
> Mark Saad
> Lucera Financial Infrastructures, LLC
> msaad at lucera.com
>
>
>
> ________________________________________
> From: owner-freebsd-net at freebsd.org <owner-freebsd-net at freebsd.org> on behalf of Johannes Lundberg <johalun0 at gmail.com>
> Sent: Thursday, February 4, 2021 3:56 PM
> To: freebsd-net at freebsd.org
> Subject: LACP BPDU packets priority?
>
>
>
> *This email originated from outside the Firm*
>
>
> Hi
>
> We're experiencing unstable lacp lagg and not seeing BPDU packets coming
> to the switch we when expect them to. Can anyone answer what is the
> priority of those packets? Could it be that they are not being sent from
> the FreeBSD host because they are stuck in outgoing queue?
>
> Please cc me since I'm not subscribed.
>
> Thanks!
>
>
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