netdev - Re: [PATCH net-next] netlink: reduce NLA_POLICY_NESTED{,

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Message-Id: <20190125.110403.1859522316620338548.davem@davemloft.net>
Date:   Fri, 25 Jan 2019 11:04:03 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     johannes@...solutions.net
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        johannes.berg@...el.com
Subject: Re: [PATCH net-next] netlink: reduce NLA_POLICY_NESTED{,_ARRAY}
 arguments

From: Johannes Berg <johannes@...solutions.net>
Date: Fri, 25 Jan 2019 10:08:28 +0100

> From: Johannes Berg <johannes.berg@...el.com>
> 
> In typical cases, there's no need to pass both the maxattr
> and the policy array pointer, as the maxattr should just be
> ARRAY_SIZE(policy) - 1. Therefore, to be less error prone,
> just remove the maxattr argument from the default macros
> and deduce the size accordingly.
> 
> Leave the original macros with a leading underscore to use
> here and in case somebody needs to pass a policy pointer
> where the policy isn't declared in the same place and thus
> ARRAY_SIZE() cannot be used.
> 
> Signed-off-by: Johannes Berg <johannes.berg@...el.com>
> ---
> Dave, it looks like we're the only users of this right now,
> so let me know if you'd prefer I take it through my tree.
> Also, this conflicts with the fix I just made to the place
> where I got it wrong, but obviously the resolution is to
> just take the version without the maxattr argument.

Please take it through your tree in that case.  It'll probably
be the more painless way to merge this.