netdev - Re: [PATCH 0/10] af_unix: add multicast and filtering features to AF

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Message-Id: <20120301.170848.432407217191581288.davem@davemloft.net>
Date:	Thu, 01 Mar 2012 17:08:48 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	luiz.dentz@...il.com
Cc:	eric.dumazet@...il.com, javier.martinez@...labora.co.uk,
	rodrigo.moya@...labora.co.uk, javier@...labora.co.uk,
	lennart@...ttering.net, kay.sievers@...y.org,
	alban.crequy@...labora.co.uk, bart.cerneels@...labora.co.uk,
	sjoerd.simons@...labora.co.uk, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/10] af_unix: add multicast and filtering features to
 AF_UNIX

From: Luiz Augusto von Dentz <luiz.dentz@...il.com>
Date: Fri, 2 Mar 2012 00:01:40 +0200

> I don't think you understood the problem, we want something that scale
> for less powerful devices, why do you think Android have all the
> trouble to create binder?

So our protocol stack is so cpu hungry compared to AF_UNIX that it's
unusable on low power devices?

I can't take you seriously if you say this after showing us the
thousands of lines of code you guys think we should add to the AF_UNIX
socket layer.

> Besides what is really the point in having AF_UNIX if you can't use
> for what it is for?

Because it doesn't have the handful of extra features you absolutely
require of it.

AF_UNIX is a complicated socket layer which is already extremely hard
to maintain.  We're still finding bugs in it even after all these
years, and that's without adding major new functionality.
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