linux-kernel - Re: 800+ byte inlines in include/net/pkt

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Message-Id: <1156254305.5304.17.camel@jzny2>
Date:	Tue, 22 Aug 2006 09:45:05 -0400
From:	jamal <hadi@...erus.ca>
To:	David Miller <davem@...emloft.net>
Cc:	vda.linux@...glemail.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: 800+ byte inlines in include/net/pkt_act.h

On Mon, 2006-21-08 at 16:38 -0700, David Miller wrote:
> From: jamal <hadi@...erus.ca>
> Date: Mon, 21 Aug 2006 08:26:00 -0400
> 
> > As per last discussion, either Patrick McHardy or myself are going
> > to work on it - at some point. Please be patient. The other
> > alternative is: you fix it and send patches.
> 
> I'm working on it right now.  This code is really gross and needs
> to be fixed immediately.
> 
> What I'll do is define a "struct tcf_common" and have the generic
> interfaces take that as well as a "struct tcf_hashinfo *" parameter to
> deal with the individual hash tables.
> 

Sounds reasonable. May actually be close to what Patrick and I had in
discussion (I cant find my notes) i.e hashinfo would contain
table{size,index,mask,lock, and pointer to table}
After staring at the code for a minute, I think the challenges you may
face are in the conversions of: tcf_ {dump_walker(), del_walker() and
generic_walker()}

Thanks for taking this up Dave. And if you get it started and get
distracted somewhere, I could take it over.

> We define all of this templated stuff then don't even use it in
> act_police.c, we just duplicate everything!

act_police deviates from the generic layout; the intent is to allow for
that. The desire was/is for usability for whoever uses the generic
layout (read: joe-netfilter) could write a single page of code quickly
to do something powerful (like gact for example). It is turning out code
augmentation is not such a practical idea in the kernel.

cheers,
jamal

> Absolutely unbelievable.
> -
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