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Re: [PATCHSET v2] netfilter, cgroup: implement xt_cgroup2 match

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Hello, David, Pablo.

On Fri, Nov 20, 2015 at 08:56:25PM +0100, Pablo Neira Ayuso wrote:
> > Pablo, are you ok with me merging this into net-next directly or
> > would you rather I take patches 1-6 into net-next and then you can
> > merge and then add patch #7 on top?
> 
> I'd suggest you get 1-6, then I'll pull this info my tree. Thanks David!

Hmm.... 1-3 will be needed to address similar issues in a different
controller, so putting them in a separate branch would work best.  I
created a branch which contains the 1-3 on top of v4.4-rc1.

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-4.5-ancestor-test

If creating a different branch from net side is better, please let me
know.

> Regarding #7, I have a couple two concerns:
> 
> 1) cgroup currently doesn't work the way users expect, ie. to perform any
>    reasonable firewalling. Since this relies on early demux, only a
>    limited number of sockets get access to the cgroup info.

Right, it doesn't work well on INPUT side, so the big warning in the
man page.

> 2) We have traditionally rejected match2 and target2 extensions. I
>    guess you can accomodate the new cgroup code through the revision
>    iptables infrastructure, so we still use the cgroup match.

I thought it would be confusing because the two are completely
separate.  Hmmm... okay, I'll merge it into xt_cgroup.

Thanks.

-- 
tejun
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[PATCHSET v2] netfilter, cgroup: implement xt_cgroup2 match Tejun Heo <tj@kernel.org> - 2015-11-19 20:00 +0100
  [PATCH 2/7] kernfs: implement kernfs_walk_and_get() Tejun Heo <tj@kernel.org> - 2015-11-19 20:00 +0100
    Re: [PATCH 2/7] kernfs: implement kernfs_walk_and_get() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-11-20 05:50 +0100
      Re: [PATCH 2/7] kernfs: implement kernfs_walk_and_get() Tejun Heo <tj@kernel.org> - 2015-11-20 22:20 +0100
        Re: [PATCH 2/7] kernfs: implement kernfs_walk_and_get() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-11-20 22:50 +0100
  [PATCH 7/7] netfilter: implement xt_cgroup2 match Tejun Heo <tj@kernel.org> - 2015-11-19 20:00 +0100
  [PATCH v2 iptables] libxt_cgroup2: add support for cgroup2 path  matching Tejun Heo <tj@kernel.org> - 2015-11-19 20:00 +0100
  [PATCH 3/7] cgroup: implement cgroup_get_from_path() and expose cgroup_put() Tejun Heo <tj@kernel.org> - 2015-11-19 20:00 +0100
  [PATCH 6/7] sock, cgroup: add sock->sk_cgroup Tejun Heo <tj@kernel.org> - 2015-11-19 20:00 +0100
    Re: [PATCH 6/7] sock, cgroup: add sock->sk_cgroup Daniel Wagner <daniel.wagner@bmw-carit.de> - 2015-11-20 12:10 +0100
      Re: [PATCH 6/7] sock, cgroup: add sock->sk_cgroup Tejun Heo <tj@kernel.org> - 2015-11-20 20:20 +0100
  Re: [PATCHSET v2] netfilter, cgroup: implement xt_cgroup2 match David Miller <davem@davemloft.net> - 2015-11-20 20:00 +0100
    Re: [PATCHSET v2] netfilter, cgroup: implement xt_cgroup2 match Pablo Neira Ayuso <pablo@netfilter.org> - 2015-11-20 21:00 +0100
    Re: [PATCHSET v2] netfilter, cgroup: implement xt_cgroup2 match Pablo Neira Ayuso <pablo@netfilter.org> - 2015-11-20 21:00 +0100
      Re: [PATCHSET v2] netfilter, cgroup: implement xt_cgroup2 match Tejun Heo <tj@kernel.org> - 2015-11-20 22:10 +0100

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