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Re: [PATCH 10/12] L2 network namespace: playing with pass-through device [message #8985 is a reply to message #8983]

Tue, 12 December 2006 14:12

Mishin Dmitry
Messages: 112
Registered: February 2006

Senior Member

On Tuesday 12 December 2006 17:10, Daniel Lezcano wrote:
> Dmitry Mishin wrote:
> > On Tuesday 12 December 2006 16:59, Daniel Lezcano wrote:
> >> Dmitry Mishin wrote:
> >>> Temporary code to debug and play with pass-through device.
> >>> Create device pair by
> >>> modprobe veth
> >>> echo 'add veth1 0:1:2:3:4:1 eth0 0:1:2:3:4:2' >/proc/net/veth_ctl
> >>> and your shell will appear into a new namespace with `eth0' device.
> >>> Configure device in this namespace
> >>> ip l s eth0 up
> >>> ip a a 1.2.3.4/24 dev eth0
> >>> and in the root namespace
> >>> ip l s veth1 up
> >>> ip a a 1.2.3.1/24 dev veth1
> >>> to establish a communication channel between root namespace and the newly
> >>> created one.
> >>>
> >>> Code is done by Andrey Savochkin and ported by me over Cedric'c patchset
> >>>
> >>> Signed-off-by: Dmitry Mishin <dim@openvz.org>
> >>>
> >> [ ... ]
> >>
> >>> --- linux-2.6.19-rc6-mm2.orig/include/linux/net_namespace.h
> >>> +++ linux-2.6.19-rc6-mm2/include/linux/net_namespace.h
> >>> @@ -24,6 +24,9 @@ struct net_namespace {
> >>> int fib4_trie_last_dflt;
> >>> #endif
> >>> unsigned int hash;
> >>> + struct net_namespace *parent;
> >>> + struct list_head child_list, sibling_list;
> >>> + unsigned int id;
> >>> };
> >> Why do yo need to have a child list and sibling list ?
> > Because of the level2<->level3 hierarchy, for example.
>
> This hierarchy doesn't exist with ns->parent ? Do you have an example
> when the hierarchy should be used ? I mean when we need to browse from
> l2 -> l3 ?
For example, to check that new ifaddr is already used by child l3 namespace.

--
Thanks,
Dmitry.

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[Message index]

		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Daniel Lezcano on Tue, 12 December 2006 13:59
		Re: [PATCH 10/12] L2 network namespace: playing with pass-throughdevice By: Mishin Dmitry on Tue, 12 December 2006 14:04
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Daniel Lezcano on Tue, 12 December 2006 14:10
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Mishin Dmitry on Tue, 12 December 2006 14:12
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Daniel Lezcano on Tue, 12 December 2006 14:19
		Re: [PATCH 10/12] L2 network namespace: playing with pass-throughdevice By: Mishin Dmitry on Tue, 12 December 2006 14:26
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Vlad Yasevich on Tue, 12 December 2006 14:52
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Daniel Lezcano on Tue, 12 December 2006 15:50
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Herbert Poetzl on Wed, 13 December 2006 07:18
		Re: [PATCH 10/12] L2 network namespace: playing with pass-through device By: Daniel Lezcano on Wed, 13 December 2006 09:36

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