netdev - Re: [PATCH iproute2-next 2/2] tc: add new attr TCA_EXT_WARN

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Message-ID: <20230114090311.1adf0176@hermes.local>
Date:   Sat, 14 Jan 2023 09:03:11 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Jamal Hadi Salim <jhs@...atatu.com>
Cc:     Hangbin Liu <liuhangbin@...il.com>, netdev@...r.kernel.org,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        David Ahern <dsahern@...nel.org>
Subject: Re: [PATCH iproute2-next 2/2] tc: add new attr TCA_EXT_WARN_MSG

On Sat, 14 Jan 2023 07:59:39 -0500
Jamal Hadi Salim <jhs@...atatu.com> wrote:

> This is not really an error IMO (and therefore doesnt belong in
> stderr). If i send a request to add an
> entry and ask that it is installed both in the kernel as well as
> offloaded into h/w and half of that
> worked (example hardware rejected it for some reason) then the event
> generated (as observed by
> f.e. tc mon) will appear in TCA_EXT_WARN_MSG and the consumer of that
> event needs to see it
> if they are using the json format.
> 

Ok, but use lower case for JSON tag following existing conventions.

Note: json support in monitor mode is incomplete for many of the
commands bridge, ip, tc, devlink. It doesn't always generate valid JSON
yet.