netdev - Re: [Patch 4/5] Network Drop Monitor: Adding drop monitor implementation & Netlink protocol

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Message-ID: <4A2F8C5C.5050108@trash.net>
Date:	Wed, 10 Jun 2009 12:35:08 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	David Miller <davem@...emloft.net>
CC:	herbert@...dor.apana.org.au, nhorman@...driver.com,
	zbr@...emap.net, netdev@...r.kernel.org, kuznet@....inr.ac.ru,
	pekkas@...core.fi, jmorris@...ei.org, yoshfuji@...ux-ipv6.org
Subject: Re: [Patch 4/5] Network Drop Monitor: Adding drop monitor implementation
 & Netlink protocol

David Miller wrote:
> From: Patrick McHardy <kaber@...sh.net>
> Date: Mon, 06 Apr 2009 15:21:45 +0200
> 
>> I'd also suggest to get rid of the 64k attribute and message size
>> limit at the same time, this is making it quite hard to support
>> transactional semantics for large updates (f.i. for nf_tables sets).
> 
> Another option is to support continuations of some sort.

Yes, something like NLM_F_MULTI to accumulate multiple messages might
help. I'm not sure yet whether this can be used to make the entire
operation atomic since the individual attributes still can't span more
than one skb, but it looks worth a try.
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