netdev - Re: [PATCH next 0/15] netfilter: Stop guessing net (take 2)

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Date:	Fri, 18 Sep 2015 22:21:19 +0200
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	David Miller <davem@...emloft.net>,
	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: Re: [PATCH next 0/15] netfilter: Stop guessing net (take 2)

On Fri, Sep 18, 2015 at 02:28:40PM -0500, Eric W. Biederman wrote:
> 
> This is the next installment of my work to pass struct net through the
> output path so the code does not need to guess how to figure out which
> network namespace it is in, and ultimately routes can have output
> devices in another network namespace.
> 
> This round the changes focus on using nf_hook_state->net in the
> netfilter functions, and not passing nf_hook_ops to the functions on the
> netfilter chains.
> 
> Given the way per network namespace operations are implemented callers
> can not rely on addresses or games with container_of.  None of the
> netfilter hooks do but we should remove the temptation.  Plus removing
> the extra parameter and the extra jump to get at values should reduce
> the number of cache line misses.
> 
> At a practical matter this is the bulk of the work that other pieces of
> code in the netfilter stack will depend on.
> 
> Since the last round I have fixed my test config to build act_connmark
> and added the patch that modifies act_connmark to track which network
> namespace it was it.

I'm going to place this series in the nf-next tree, thanks! If there's
some fallout, please send me an incremental fix.

> The changes are also available against net-next at:
> git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/net-next.git master
> 
> My entire pending set of changes for those who want to look ahead is at:
> git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/net-next.git for-testing

I can see quite a lot of changes for IPVS. I'd suggest you route IPVS
changes through ipvs-devel mailing list so Simon picks them from
there.

Will be preparing a batch with Netfilter updates for net-next to pass
up to David asap.
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