netdev - Re: [PATCH RFC bpf-next 0/6] bpf: introduce cgroup-bpf bind, connect, post-bind hooks

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Message-ID: <20180314180106.dhvdtaspx5kjkb4a@ast-mbp>
Date:   Wed, 14 Mar 2018 11:01:08 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Mahesh Bandewar
         (महेश बंडेवार) <maheshb@...gle.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        David Miller <davem@...emloft.net>, daniel@...earbox.net,
        linux-netdev <netdev@...r.kernel.org>, kernel-team@...com
Subject: Re: [PATCH RFC bpf-next 0/6] bpf: introduce cgroup-bpf bind,
 connect, post-bind hooks

On Wed, Mar 14, 2018 at 10:22:03AM -0700, Mahesh Bandewar (महेश बंडेवार) wrote:
> On Tue, Mar 13, 2018 at 8:39 PM, Alexei Starovoitov <ast@...nel.org> wrote:
> > For our container management we've been using complicated and fragile setup
> > consisting of LD_PRELOAD wrapper intercepting bind and connect calls from
> > all containerized applications.
> > The setup involves per-container IPs, policy, etc, so traditional
> > network-only solutions that involve VRFs, netns, acls are not applicable.
> You can keep the policies per cgroup but move the ip from cgroup to
> net-ns and then none of these ebpf hacks are required since cgroup and
> namespaces are orthogonal you can use cgroups in conjunction with
> namespaces.

answered in reply to Eric. Pls follow up there if it's still not clear.