netdev - Re: [PATCH 1/4] genetlink: introduce pre_doit/post

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Date:	Tue, 05 Oct 2010 00:08:50 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	johannes@...solutions.net
Cc:	linville@...driver.com, netdev@...r.kernel.org,
	linux-wireless@...r.kernel.org
Subject: Re: [PATCH 1/4] genetlink: introduce pre_doit/post_doit hooks

From: Johannes Berg <johannes@...solutions.net>
Date: Mon, 04 Oct 2010 21:14:03 +0200

> From: Johannes Berg <johannes.berg@...el.com>
> 
> Each family may have some amount of boilerplate
> locking code that applies to most, or even all,
> commands.
> 
> This allows a family to handle such things in
> a more generic way, by allowing it to
>  a) include private flags in each operation
>  b) specify a pre_doit hook that is called,
>     before an operation's doit() callback and
>     may return an error directly,
>  c) specify a post_doit hook that can undo
>     locking or similar things done by pre_doit,
>     and finally
>  d) include two private pointers in each info
>     struct passed between all these operations
>     including doit(). (It's two because I'll
>     need two in nl80211 -- can be extended.)
> 
> Signed-off-by: Johannes Berg <johannes.berg@...el.com>

Acked-by: David S. Miller <davem@...emloft.net>
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