netdev - Re: [PATCH 1/5] netlink: extended ACK reporting

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Date:   Mon, 10 Apr 2017 08:18:09 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     David Ahern <dsa@...ulusnetworks.com>,
        Jiri Pirko <jiri@...nulli.us>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        pablo@...filter.org, Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Benc <jbenc@...hat.com>
Subject: Re: [PATCH 1/5] netlink: extended ACK reporting

> perhaps I misunderstand something, but nla_parse suggests attribute
> type can not be 0:
[...]

Yes, some - very few - families still insist on using attribute 0,
perhaps parsing by hand or so. Like you say though, the entire
infrastructure makes that hard and undesirable, so I don't really see
why we need to invest the extra code/work into making it work *here*,
especially since it's such a corner case as I described in my other
email.

johannes