Re: AF_BUS socket address family

From: Chris Friesen
Date: Mon Jul 02 2012 - 00:50:01 EST

On 06/29/2012 05:18 PM, David Miller wrote:
From: Vincent Sanders<vincent.sanders@xxxxxxxxxxxxxxx>
Date: Sat, 30 Jun 2012 00:12:37 +0100

I had hoped you would have at least read the opening list where I
outlined the underlying features which explain why none of the
existing IPC match the requirements.
I had hoped that you had read the part we told you last time where
we explained why multicast and "reliable delivery" are fundamentally
incompatible attributes.

We are not creating a full address family in the kernel which exists
for one, and only one, specific and difficult user.

For what it's worth, the company I work for (and a number of other companies) currently use an out-of-tree datagram multicast messaging protocol family based on AF_UNIX.

If AF_BUS were to be accepted, it would be essentially trivial for us to port our existing userspace messaging library to use it instead of our current protocol family, and we would almost certainly do so.

I'd love to see AF_BUS go in.

Chris Friesen

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