netdev - Re: [Intel-wired-lan] [next-queue PATCH v1] igb: Fix limiting the number of queues to number of cpus

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Message-ID: <CAKgT0Ud1WkN9OT4ftwzry8Wf2Qwr3h=SwVrsRc9zu_BEg3w0_w@mail.gmail.com>
Date:   Thu, 18 Apr 2019 14:28:49 -0700
From:   Alexander Duyck <alexander.duyck@...il.com>
To:     Vinicius Costa Gomes <vinicius.gomes@...el.com>
Cc:     Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        intel-wired-lan <intel-wired-lan@...ts.osuosl.org>,
        Netdev <netdev@...r.kernel.org>,
        Bhagath Singh Karunakaran <bhagath@...ycito.com>
Subject: Re: [Intel-wired-lan] [next-queue PATCH v1] igb: Fix limiting the
 number of queues to number of cpus

On Thu, Apr 18, 2019 at 1:57 PM Vinicius Costa Gomes
<vinicius.gomes@...el.com> wrote:
>
> Hi Jeff,
>
> Jeff Kirsher <jeffrey.t.kirsher@...el.com> writes:
>
> > I will discuss the issue with my fellow developers and hopefully we can
> > come up with a kernel interface that all drivers can use to handle this
> > issue.
>
> Did you have the chance to discuss this issue?
>
>
> Cheers,
> --
> Vinicius

Is there any reason why you couldn't just use the "ethtool -L" command
to change the number of queues after creating the interface instead of
having to use a module parameter? Just wondering since that would be a
way to change the number of queues, and it should support values
greater than the number of CPUs if I am not mistaken.

Thanks.

- Alex