linux-kernel - Re: [PATCH 0/5] [RFC] AF_RXRPC socket family implementation [try #2]

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Message-Id: <076F1B35-BE08-41B4-8294-581EDAFF4ACC@mac.com>
Date:	Sat, 17 Mar 2007 23:32:17 -0700
From:	Kyle Moffett <mrmacman_g4@....com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	David Howells <dhowells@...hat.com>, davem@...emloft.net,
	netdev@...r.kernel.org, herbert.xu@...hat.com,
	linux-kernel@...r.kernel.org, hch@...radead.org,
	arjan@...radead.org
Subject: Re: [PATCH 0/5] [RFC] AF_RXRPC socket family implementation [try #2]

On Mar 16, 2007, at 10:11:41, Alan Cox wrote:
>> I know what they are; and I don't think that what's available  
>> covers it.
>>
>>> and use a proper standard socket type.
>>
>> Assuming that that list is exhaustive...
>
> SOCK_RDM seems to match perfectly well here. The point isn't to  
> enumerate everything in the universe the point is to find "works  
> like" parallels good enough to avoid more special casing.

IMHO the problem with classifying RxRPC as a "reliable datagram"  
socket is that even an atomic unidirectional communication isn't a  
single datagram, it's at least 3; there is shared connection state  
and security context on both sides which pertains to a collection of  
independent and possibly simultaneous RxRPC calls.  From the digging  
around that I did in the kernel socket code a while ago I don't see a  
cleaner way of implementing it than a new SOCK_RXRPC.

Cheers,
Kyle Moffett

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