netdev - Re: Fwd: [PATCH] [-mm] ACPI: export ACPI events via netlink

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Date:	Fri, 29 Jun 2007 14:57:49 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	hadi@...erus.ca
Cc:	Zhang Rui <rui.zhang@...el.com>, netdev@...r.kernel.org,
	"linux-acpi@...r" <linux-acpi@...r.kernel.org>, lenb@...nel.org,
	Thomas Graf <tgraf@...g.ch>, Patrick McHardy <kaber@...sh.net>
Subject: Re: Fwd: [PATCH] [-mm] ACPI: export ACPI events via netlink

On Wed, 2007-06-27 at 19:24 -0400, jamal wrote:

> a) i.e other than the reserved group for controller (which you seem to
> be taking care of), every other genetlink user has to explicitly
> register when they need a mcast group. 

Hm. I'm starting to dislike the dynamic registration the more I think
about it. Now when a group is unregistered I'd have to unbind everybody
who's currently using it... At least when I want to enforce
root/non-root binds which is a further goal.

> c) Use a global hash table to store all the genl_multicast_groups;
> I think this (handwaving) should be searchable by i) name ii)ID and iii)
> family. 

Also, it doesn't look like I'll ever be searching for a group unless we
want to allow userspace to explicitly ask for a group ID, but I'd think
it should just get the list of all IDs when asking for family
information and then cache that.

johannes

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