netdev - Re: TC stats / hw offload question

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Message-ID: <e0ff891b-5e6a-2413-9795-e1e97b7c9048@solarflare.com>
Date:   Mon, 18 Feb 2019 19:37:06 +0000
From:   Edward Cree <ecree@...arflare.com>
To:     Jamal Hadi Salim <jhs@...atatu.com>,
        netdev <netdev@...r.kernel.org>
CC:     Jiri Pirko <jiri@...nulli.us>,
        Cong Wang <xiyou.wangcong@...il.com>,
        "Or Gerlitz" <gerlitz.or@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "PJ Waskiewicz" <pjwaskiewicz@...il.com>,
        Anjali Singhai Jain <anjali.singhai@...el.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: Re: TC stats / hw offload question

On 18/02/19 18:56, Edward Cree wrote:
> (or
>  maybe require it to be set to some distinguished value, like 0, to
>  mean 'allocate', so that as a future extension we can support
>  shareable counters).
Turns out 0 isn't an option, because TC already internally swallows
 that and allocates its own index (same as if 'index' wasn't specified
 on cmdline at all), unless we can change TC to pass that 0 on to the
 driver.

-Ed