From: Benjamin LaHaise <bcrl@kvack.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: rsa <ravi.mlists@gmail.com>, netdev@vger.kernel.org
Subject: Re: switching network namespace midway
Date: Fri, 2 Nov 2012 10:03:53 -0400 [thread overview]
Message-ID: <20121102140353.GE18091@kvack.org> (raw)
In-Reply-To: <87k3u4il2l.fsf@xmission.com>
On Thu, Nov 01, 2012 at 11:18:58PM -0700, Eric W. Biederman wrote:
> You need a per network namespace exit function to delete the tunnel when
> the xmit direction goes away. Otherwise we have a very nasty race if
> the original network namespace exits.
That already exists as ipgre_exit_net(). Since the ip_tunnel structure
remains hashed in the network namespace that creation occurred in, this
case should be covered.
> NETNS_LOCAL may make sense on the reference device that is used to
> support ioctls for creating devices.
*nod* That makes sense.
> ipgre_open ? It looks like it needs to be handled. Probably that
> ip_route_output_gre needs to be moved.
Good catch. Will respin with that changed.
> ipv6?
That's next on the list. There are also issues with ipip, ipmr and
ipvti, as well as their ipv6 versions.
-ben
--
"Thought is the essence of where you are now."
next prev parent reply other threads:[~2012-11-02 14:03 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-23 17:49 switching network namespace midway rsa
2012-10-24 21:11 ` Eric W. Biederman
2012-10-24 21:21 ` Benjamin LaHaise
2012-10-25 1:37 ` Eric W. Biederman
2012-10-25 14:38 ` Benjamin LaHaise
2012-10-25 16:21 ` Stephen Hemminger
2012-10-28 5:43 ` Eric W. Biederman
2012-10-29 14:23 ` Stephen Hemminger
2012-10-30 0:21 ` Eric W. Biederman
2012-10-30 8:55 ` James Chapman
2012-10-25 15:12 ` rsa
2012-10-25 15:29 ` rsa
2012-10-25 15:59 ` Benjamin LaHaise
2012-10-25 16:15 ` Eric W. Biederman
2012-11-02 2:25 ` Benjamin LaHaise
2012-11-02 6:18 ` Eric W. Biederman
2012-11-02 14:03 ` Benjamin LaHaise [this message]
2012-11-02 20:45 ` Eric W. Biederman
2013-06-24 14:13 ` [RFC PATCH net-next 0/2] sit: allow to switch netns during encap/decap Nicolas Dichtel
2013-06-24 14:13 ` [RFC PATCH net-next 1/2] dev: introduce dev_cleanup_skb() Nicolas Dichtel
2013-06-24 18:13 ` Ben Hutchings
2013-06-24 19:05 ` Eric W. Biederman
2013-06-24 14:13 ` [RFC PATCH net-next 2/2] sit: add support of x-netns Nicolas Dichtel
2013-06-24 19:28 ` Eric W. Biederman
2013-06-24 21:11 ` Nicolas Dichtel
2013-06-24 22:42 ` Eric W. Biederman
2013-06-25 14:10 ` Nicolas Dichtel
2013-06-25 14:24 ` [PATCH v2 net-next 0/2] sit: allow to switch netns during encap/decap Nicolas Dichtel
2013-06-25 14:24 ` [PATCH v2 net-next 1/2] dev: introduce skb_scrub_packet() Nicolas Dichtel
2013-06-25 14:24 ` [PATCH v2 net-next 2/2] sit: add support of x-netns Nicolas Dichtel
2013-06-25 23:56 ` David Miller
2013-06-26 1:35 ` Eric W. Biederman
2013-06-26 5:48 ` David Miller
2013-06-26 10:03 ` Eric W. Biederman
2013-06-26 10:22 ` Eric Dumazet
2013-06-26 12:15 ` Nicolas Dichtel
2013-06-26 14:11 ` [PATCH v3 net-next 0/2] sit: allow to switch netns during encap/decap Nicolas Dichtel
2013-06-26 14:11 ` [PATCH v3 net-next 1/2] dev: introduce skb_scrub_packet() Nicolas Dichtel
2013-06-26 14:11 ` [PATCH v3 net-next 2/2] sit: add support of x-netns Nicolas Dichtel
2013-06-28 5:36 ` [PATCH v3 net-next 0/2] sit: allow to switch netns during encap/decap David Miller
2013-07-03 15:00 ` [PATCH net-next 0/3] ipip/ip6tnl: " Nicolas Dichtel
2013-07-03 15:00 ` [PATCH net-next 1/3] sit: fix tunnel update via netlink Nicolas Dichtel
2013-07-03 15:00 ` [PATCH net-next 2/3] ipip: add x-netns support Nicolas Dichtel
2013-07-03 15:00 ` [PATCH net-next 3/3] ip6tnl: " Nicolas Dichtel
2013-07-04 21:56 ` [PATCH net-next 0/3] ipip/ip6tnl: allow to switch netns during encap/decap David Miller
2013-08-13 15:51 ` [PATCH net-next v2 0/4] " Nicolas Dichtel
2013-08-13 15:51 ` [PATCH net-next v2 1/4] dev: move skb_scrub_packet() after eth_type_trans() Nicolas Dichtel
2013-08-13 15:51 ` [PATCH net-next v2 2/4] ipv4 tunnels: use net_eq() helper to check netns Nicolas Dichtel
2013-08-13 15:51 ` [PATCH net-next v2 3/4] ipip: add x-netns support Nicolas Dichtel
2013-08-13 15:51 ` [PATCH net-next v2 4/4] ip6tnl: " Nicolas Dichtel
2013-08-15 8:01 ` [PATCH net-next v2 0/4] ipip/ip6tnl: allow to switch netns during encap/decap David Miller
2013-06-26 13:49 ` [PATCH v2 net-next 2/2] sit: add support of x-netns Nicolas Dichtel
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