netdev - RE: [PATCH iproute2-next] taprio: Add support for the SetAndHold and SetAndRelease commands

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Message-ID: <BN8PR12MB3266015708808170D71B17C6D33F0@BN8PR12MB3266.namprd12.prod.outlook.com>
Date:   Tue, 7 Jan 2020 09:29:51 +0000
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     Andre Guedes <andre.guedes@...ux.intel.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>
CC:     Joao Pinto <Joao.Pinto@...opsys.com>,
        David Ahern <dsahern@...il.com>
Subject: RE: [PATCH iproute2-next] taprio: Add support for the SetAndHold and
 SetAndRelease commands

From: Andre Guedes <andre.guedes@...ux.intel.com>
Date: Jan/07/2020, 00:19:17 (UTC+00:00)

> > On our IPs Queue 0 is by preemptible and all remaining ones are express 
> > by default.
> 
> Is this configuration fixed in your IP or the user can control if a specific
> queue is preemptible or express?

It's configurable for all Queues except 0 which is fixed as preemptible.

> I'm trying to figure out how this discussion relates to the Qbu discussion
> we're having in "[v1,net-next, 1/2] ethtool: add setting frame preemption of
> traffic classes".

Hmmm.

I think tc utility is the right way to do this, and not ethtool because 
EST and FP are highly tied ... Do you agree ?

---
Thanks,
Jose Miguel Abreu