netdev - [PATCH net-next v2 0/4] ipip/ip6tnl: allow to switch netns during encap/decap

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Date:	Tue, 13 Aug 2013 17:51:08 +0200
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, ebiederm@...ssion.com, bcrl@...ck.org,
	ravi.mlists@...il.com, bhutchings@...arflare.com,
	eric.dumazet@...il.com
Subject: [PATCH net-next v2 0/4] ipip/ip6tnl: allow to switch netns during encap/decap


This serie is a follow up of the previous serie witch adds this functionality
for sit tunnels.

The goal is to add x-netns support for the module ipip and ip6_tunnel, ie the
encapsulation addresses and the network device are not owned by the same
namespace.

Note that the two first patches are cleanup.

Example to configure an ipip tunnel:

modprobe ipip
ip netns add netns1
ip link add ipip1 type ipip remote 10.16.0.121 local 10.16.0.249
ip l s ipip1 netns netns1
ip netns exec netns1 ip l s lo up
ip netns exec netns1 ip l s ipip1 up
ip netns exec netns1 ip a a dev ipip1 192.168.2.123 remote 192.168.2.121

or an ip6_tunnel:

modprobe ip6_tunnel
ip netns add netns1
ip link add ip6tnl1 type ip6tnl remote 2001:660:3008:c1c3::121 local 2001:660:3008:c1c3::123
ip l s ip6tnl1 netns netns1
ip netns exec netns1 ip l s lo up
ip netns exec netns1 ip l s ip6tnl1 up
ip netns exec netns1 ip a a dev ip6tnl1 192.168.1.123 remote 192.168.1.121
ip netns exec netns1 ip -6 a a dev ip6tnl1 2001:1235::123 remote 2001:1235::121

v2: remove the patch 1/3 of the v1 serie (already included)
    use net_eq()
    add patch 1/4 and 2/4

 include/net/ip6_tunnel.h |  1 +
 include/net/ip_tunnels.h |  2 +-
 net/core/dev.c           |  6 +++---
 net/ipv4/ip_gre.c        |  4 ++--
 net/ipv4/ip_tunnel.c     | 52 ++++++++++++++++++++++++++++++------------------
 net/ipv4/ip_vti.c        |  2 +-
 net/ipv4/ipip.c          |  3 +--
 net/ipv6/ip6_gre.c       |  5 +++++
 net/ipv6/ip6_tunnel.c    | 41 ++++++++++++++++++++++++++++----------
 net/ipv6/sit.c           |  6 +++---
 10 files changed, 81 insertions(+), 41 deletions(-)

Comments are welcome.

Regards,
Nicolas
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