Hi Todd,
Thank you for getting back to me. It is probably easier if you
file the bug.
A little more information in case it is useful:
We have also tried this running the 5.17.1 kernel with the same
result.
When the OS starts, the interfaces are initially given default
fq_codel qdiscs. We are able to replace these with the mqprio
qdisc, but after doing that we can make no further changes.
The cards have the latest (8.60 version) firmware installed.
Thanks and regards,
David
On Wed, Apr 20 2022 at 19:01, "Fujinaka, Todd"
<todd.fujin...@intel.com> wrote:
Do you have some way to file a bug with us through your factory
contact? Otherwise I will file a bug and then relay the info via
email.
Todd Fujinaka
Software Application Engineer
Ethernet Products Group
Intel Corporation
todd.fujin...@intel.com
-----Original Message-----
From: David Hayes <dav...@simula.no>
Sent: Wednesday, April 13, 2022 5:27 AM
To: e1000-de...@lists.sf.net
Subject: [E1000-devel] tc changing mqprio parameters X710-T4L
Hi list,
We are using a couple of X710-T4L cards in an experimental
testbed. The computer with the cards is currently manjaro linux
5.17rc7 kernel, and cards have been updated with the latest nvm
8.60. As part of the work
we wish to periodically change the shapers' max_rate parameter.
We set up the qdisc as follows:
# tc qdisc replace dev <interface> root mqprio num_tc 1 hw 1
mode
channel shaper bw_rlimit min_rate 0Mbit max_rate 500Mbit map 0
0
0 0 0 0 0 0 queues 1@0
This works well and we are able to confirm the 500Mbit limit
experimentally.
However, when we try to change the speed:
# tc qdisc change dev <interface> root mqprio num_tc 1 hw 1 mode
channel shaper bw_rlimit min_rate 0Mbit max_rate 200Mbit map 0
0
0 0 0 0 0 0 queues 1@0
we get the following error message:
Change operation is not supported by specified qdisc
We are also unable use "replace" a second time.
I know our use case is a little unusual, but it is simple. Does
anyone have any ideas what
the problem could be and how we can fix it or work around it?
Many thanks,
David
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--
David Hayes
SimulaMet
https://www.simula.no/people/davidh
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