From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
To: Cong Wang <cwang@twopensource.com>
Cc: netdev <netdev@vger.kernel.org>,
containers@lists.linux-foundation.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-api@vger.kernel.org, David Miller <davem@davemloft.net>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>
Subject: Re: [RFC PATCH net-next v2 0/5] netns: allow to identify peer netns
Date: Thu, 25 Sep 2014 10:53:28 +0200 [thread overview]
Message-ID: <5423D808.7050800@6wind.com> (raw)
In-Reply-To: <CAHA+R7MM04ew=J8sHfSQERwoCAgEDfrGgtgRORqs3ePgtjVYWg@mail.gmail.com>
Le 24/09/2014 18:48, Cong Wang a écrit :
> On Wed, Sep 24, 2014 at 9:31 AM, Nicolas Dichtel
> <nicolas.dichtel@6wind.com> wrote:
>>> I think in this case your ID's are still available, but aren't you
>>> providing a new way
>>> for the inner netns device to escape which we are trying to avoid?
>>
>> It's why the ids depend on user ns. Only if user ns are the same we allow to
>> get an id for a peer netns.
>
> Too late, userns is relatively new, relying on it breaks our existing
> assumption.
>
I don't get your point. netns has been added in kernel after user ns:
acce292c82d4 user namespace: add the framework => 2.6.23
5f256becd868 [NET]: Basic network namespace infrastructure. => 2.6.24
In the kernel, each netns is linked with a user ns.
next prev parent reply other threads:[~2014-09-25 8:53 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-23 13:20 [RFC PATCH net-next v2 0/5] netns: allow to identify peer netns Nicolas Dichtel
2014-09-23 13:20 ` [RFC PATCH net-next v2 1/5] netns: allocate netns ids Nicolas Dichtel
2014-09-23 13:20 ` [RFC PATCH net-next v2 2/5] netns: add genl cmd to get the id of a netns Nicolas Dichtel
2014-09-23 13:20 ` [RFC PATCH net-next v2 3/5] rtnl: add link netns id to interface messages Nicolas Dichtel
2014-09-23 13:20 ` [RFC PATCH net-next v2 4/5] iptunnels: advertise link netns via netlink Nicolas Dichtel
2014-09-23 13:20 ` [RFC PATCH net-next v2 5/5] rtnl: allow to create device with IFLA_LINK_NETNSID set Nicolas Dichtel
2014-09-23 19:22 ` [RFC PATCH net-next v2 0/5] netns: allow to identify peer netns Cong Wang
2014-09-24 9:23 ` Nicolas Dichtel
2014-09-24 16:01 ` Cong Wang
2014-09-24 16:15 ` Cong Wang
2014-09-24 16:31 ` Nicolas Dichtel
2014-09-24 16:48 ` Cong Wang
2014-09-25 8:53 ` Nicolas Dichtel [this message]
2014-09-26 1:58 ` Cong Wang
2014-09-26 13:38 ` Nicolas Dichtel
2014-09-24 16:27 ` Nicolas Dichtel
2014-09-24 16:45 ` Cong Wang
2014-09-25 8:53 ` Nicolas Dichtel
2014-09-26 2:09 ` Cong Wang
2014-09-26 13:40 ` Nicolas Dichtel
2014-09-26 19:15 ` David Ahern
2014-09-26 19:34 ` Eric W. Biederman
2014-09-26 19:44 ` David Ahern
2014-09-26 20:45 ` Eric W. Biederman
2014-09-26 20:56 ` David Ahern
2014-09-23 19:26 ` Andy Lutomirski
2014-09-24 9:31 ` Nicolas Dichtel
2014-09-24 17:05 ` Andy Lutomirski
2014-09-25 7:54 ` Nicolas Dichtel
2014-09-26 18:10 ` Eric W. Biederman
2014-09-26 18:26 ` Andy Lutomirski
2014-09-26 18:57 ` Eric W. Biederman
2014-09-29 12:06 ` Nicolas Dichtel
2014-09-29 18:43 ` Eric W. Biederman
2014-10-02 13:46 ` Nicolas Dichtel
2014-10-02 13:48 ` [RFC PATCH net-next v3 0/4] " Nicolas Dichtel
2014-10-02 13:48 ` [RFC PATCH net-next v3 1/4] netns: add genl cmd to add and get peer netns ids Nicolas Dichtel
2014-10-02 19:33 ` Eric W. Biederman
2014-10-03 12:22 ` Nicolas Dichtel
2014-10-02 13:48 ` [RFC PATCH net-next v3 2/4] rtnl: add link netns id to interface messages Nicolas Dichtel
2014-10-02 13:48 ` [RFC PATCH net-next v3 3/4] iptunnels: advertise link netns via netlink Nicolas Dichtel
2014-10-02 13:48 ` [RFC PATCH net-next v3 4/4] rtnl: allow to create device with IFLA_LINK_NETNSID set Nicolas Dichtel
2014-10-30 15:25 ` [PATCH net-next v4 0/4] netns: allow to identify peer netns Nicolas Dichtel
2014-10-30 15:25 ` [PATCH net-next v4 1/4] netns: add genl cmd to add and get peer netns ids Nicolas Dichtel
2014-10-30 18:35 ` Eric W. Biederman
2014-10-31 9:41 ` Nicolas Dichtel
2014-10-30 15:25 ` [PATCH net-next v4 2/4] rtnl: add link netns id to interface messages Nicolas Dichtel
2014-10-30 15:25 ` [PATCH net-next v4 3/4] iptunnels: advertise link netns via netlink Nicolas Dichtel
2014-10-30 15:25 ` [PATCH net-next v4 4/4] rtnl: allow to create device with IFLA_LINK_NETNSID set Nicolas Dichtel
2014-10-30 18:41 ` [PATCH net-next v4 0/4] netns: allow to identify peer netns Eric W. Biederman
2014-10-31 9:48 ` Nicolas Dichtel
2014-10-31 19:14 ` Eric W. Biederman
2014-11-05 14:23 ` Nicolas Dichtel
2014-12-04 16:21 ` Nicolas Dichtel
2015-01-15 14:11 ` [PATCH net-next v5 " Nicolas Dichtel
2015-01-15 14:11 ` [PATCH net-next v5 1/4] netns: add rtnl cmd to add and get peer netns ids Nicolas Dichtel
2015-01-15 14:11 ` [PATCH net-next v5 2/4] rtnl: add link netns id to interface messages Nicolas Dichtel
2015-01-15 14:11 ` [PATCH net-next v5 3/4] tunnels: advertise link netns via netlink Nicolas Dichtel
2015-01-15 14:11 ` [PATCH net-next v5 4/4] rtnl: allow to create device with IFLA_LINK_NETNSID set Nicolas Dichtel
2015-01-19 19:16 ` [PATCH net-next v5 0/4] netns: allow to identify peer netns David Miller
2014-11-01 21:08 ` [PATCH net-next v4 " David Miller
2014-11-24 13:45 ` Nicolas Dichtel
2014-10-02 19:20 ` [RFC PATCH net-next v2 0/5] " Eric W. Biederman
2014-10-02 19:31 ` Andy Lutomirski
2014-10-02 19:45 ` Eric W. Biederman
2014-10-02 19:48 ` Andy Lutomirski
2014-10-03 12:22 ` Nicolas Dichtel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5423D808.7050800@6wind.com \
--to=nicolas.dichtel@6wind.com \
--cc=akpm@linux-foundation.org \
--cc=containers@lists.linux-foundation.org \
--cc=cwang@twopensource.com \
--cc=davem@davemloft.net \
--cc=ebiederm@xmission.com \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=netdev@vger.kernel.org \
--cc=stephen@networkplumber.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).