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

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Message-Id: <20120228.140558.1132853996225815681.davem@davemloft.net>
Date:	Tue, 28 Feb 2012 14:05:58 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	rodrigo.moya@...labora.co.uk
Cc:	javier.martinez@...labora.co.uk, javier@...labora.co.uk,
	eric.dumazet@...il.com, 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: Rodrigo Moya <rodrigo.moya@...labora.co.uk>
Date: Tue, 28 Feb 2012 11:47:39 +0100

> Because of all of this, UDP/IP multicast wasn't even considered as an
> option. We might be wrong in some/all of those, so could you please
> comment on them to check if that's so?

You guys seem to want something that isn't AF_UNIX, ordering guarentees
and whatnot, it really has no place in these protocols.

You've designed a userlevel subsystem with requirements that no existing
socket layer can give, and you just figured you'd work that out later.

I think you rather should have reconsidered these premises and designed
something that could handle reality which is AF_UNIX can't do multicast
and nobody guarentees those strange ordering requirements you seem to
have.
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