netdev - Re: [PATCH 09/37] dccp: Resolve dependencies of features on choice of CCID

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Message-ID: <20080904005931.GG12639@ghostprotocols.net>
Date:	Wed, 3 Sep 2008 21:59:31 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Gerrit Renker <gerrit@....abdn.ac.uk>, dccp@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 09/37] dccp: Resolve dependencies of features on choice
	of CCID

Em Wed, Sep 03, 2008 at 06:51:52AM +0200, Gerrit Renker escreveu:
> | > This provides a missing link in the code chain, as several features implicitly
> | > depend and/or rely on the choice of CCID. Most notably, this is the Send Ack Vector
> | > feature, but also Ack Ratio and Send Loss Event Rate (also taken care of).
> | > 
> <snip>
> | 
> | Doesn't this belongs into struct ccid_operations? Why has the core feature
> | negotiation have knowledge of any specific CCID? When people want to
> | merge CCID 4, 5, etc will we need to change net/dccp/feat.c?
> | 
> | I think that this needs thus to go to struct ccid_operations, and then the feature
> | negotiation code can just use use the ccid number to access:
> | 
> | struct ccid_operations *ccids[CCID_MAX]
> | 
> | ccids[ccid_number]->deps

> In principle I agree with you, what I am asking for is to defer this code
> optimisation until later.

Fair enough.

- Arnaldo
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