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Re: [RFC] network namespaces [message #5259 is a reply to message #5212]

Thu, 17 August 2006 08:28

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

> Basically there are currently 3 approaches that have been proposed.
>
> The trivial bsdjail style as implemented by Serge and in a slightly
> more sophisticated version in vserver. This approach as it does not
> touch the packets has little to no packet level overhead. Basically
> this is what I have called the Level 3 approach.
>
> The more in depth approach where we modify the packet processing based
> upon which network interface the packet comes in on, and it looks like
> each namespace has it's own instance of the network stack. Roughly
> what was proposed earlier in this thread the Level 2 approach. This
> potentially has per packet overhead so we need to watch the implementation
> very carefully.
>
> Some weird hybrid as proposed by Daniel, that I was never clear on the
> semantics.
The good thing is that these approaches do not contradict each other.
We discussed it with Daniel during the summit and as Andrey proposed
some shortcuts can be created to avoid double stack traversing.

>>From the previous conversations my impression was that as long as
> we could get a Layer 2 approach that did not slow down the networking
> stack and was clean, everyone would be happy.
agree.

> I'm buried in the process id namespace at the moment, and except
> to be so for the rest of the month, so I'm not going to be
> very helpful except for a few stray comments.
I will be very much obliged if you find some time to review these new
patches so that we could make some progress here.

Thanks,
Kirill

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[Message index]

		[RFC] network namespaces By: Andrey Savochkin on Tue, 15 August 2006 14:20
		[PATCH 1/9] network namespaces: core and device list By: Andrey Savochkin on Tue, 15 August 2006 14:48
		Re: [PATCH 1/9] network namespaces: core and device list By: Dave Hansen on Wed, 16 August 2006 14:46
		Re: [PATCH 1/9] network namespaces: core and device list By: Stephen Hemminger on Wed, 16 August 2006 16:45
		[PATCH 2/9] network namespaces: IPv4 routing By: Andrey Savochkin on Tue, 15 August 2006 14:48
		[PATCH 6/9] allow proc_dir_entries to have destructor By: Andrey Savochkin on Tue, 15 August 2006 14:48
		[PATCH 5/9] network namespaces: async socket operations By: Andrey Savochkin on Tue, 15 August 2006 14:48
		Re: [PATCH 5/9] network namespaces: async socket operations By: Daniel Lezcano on Fri, 22 September 2006 15:33
		Re: [PATCH 5/9] network namespaces: async socket operations By: Andrey Savochkin on Sat, 23 September 2006 13:16
		[PATCH 7/9] net_device seq_file By: Andrey Savochkin on Tue, 15 August 2006 14:48
		[PATCH 8/9] network namespaces: device to pass packets between namespaces By: Andrey Savochkin on Tue, 15 August 2006 14:48
		[PATCH 4/9] network namespaces: socket hashes By: Andrey Savochkin on Tue, 15 August 2006 14:48
		Re: [PATCH 4/9] network namespaces: socket hashes By: Daniel Lezcano on Mon, 18 September 2006 15:12
		Re: [PATCH 4/9] network namespaces: socket hashes By: Andrey Savochkin on Wed, 20 September 2006 16:32
		Re: [PATCH 4/9] network namespaces: socket hashes By: Daniel Lezcano on Thu, 21 September 2006 12:34
		[PATCH 9/9] network namespaces: playing with pass-through device By: Andrey Savochkin on Tue, 15 August 2006 14:48
		Re: [RFC] network namespaces By: serue on Wed, 16 August 2006 11:53
		Re: [RFC] network namespaces By: Alexey Kuznetsov on Wed, 16 August 2006 15:12
		Re: [RFC] network namespaces By: ebiederm on Wed, 16 August 2006 17:35
		Re: [RFC] network namespaces By: dev on Thu, 17 August 2006 08:28
		Re: [RFC] network namespaces By: Daniel Lezcano on Tue, 05 September 2006 13:34
		Re: [RFC] network namespaces By: ebiederm on Tue, 05 September 2006 14:45
		Re: [RFC] network namespaces By: Herbert Poetzl on Tue, 05 September 2006 16:53
		Re: [RFC] network namespaces By: Daniel Lezcano on Wed, 06 September 2006 09:10
		Re: [RFC] network namespaces By: Herbert Poetzl on Wed, 06 September 2006 16:56
		Re: Re: [RFC] network namespaces By: kir on Wed, 06 September 2006 17:36
		Re: [RFC] network namespaces By: ebiederm on Wed, 06 September 2006 18:34
		Re: [RFC] network namespaces By: kir on Wed, 06 September 2006 18:56
		Re: [RFC] network namespaces By: Cedric Le Goater on Wed, 06 September 2006 20:53
		RE: [RFC] network namespaces By: Caitlin Bestler on Wed, 06 September 2006 23:06
		Re: [RFC] network namespaces By: Daniel Lezcano on Thu, 07 September 2006 08:25
		Re: [RFC] network namespaces By: ebiederm on Thu, 07 September 2006 18:29
		Re: [RFC] network namespaces By: Herbert Poetzl on Fri, 08 September 2006 06:02
		Re: Re: [RFC] network namespaces By: dev on Thu, 07 September 2006 16:20
		Re: Re: [RFC] network namespaces By: Herbert Poetzl on Thu, 07 September 2006 17:27
		Re: Re: [RFC] network namespaces By: Mishin Dmitry on Fri, 08 September 2006 13:10
		Re: Re: [RFC] network namespaces By: Herbert Poetzl on Fri, 08 September 2006 18:11
		Re: Re: [RFC] network namespaces By: Mishin Dmitry on Sat, 09 September 2006 07:57
		Re: Re: [RFC] network namespaces By: Herbert Poetzl on Sun, 10 September 2006 02:47
		Re: Re: [RFC] network namespaces By: Mishin Dmitry on Sun, 10 September 2006 07:45
		Re: Re: [RFC] network namespaces By: Herbert Poetzl on Sun, 10 September 2006 19:22
		Re: [RFC] network namespaces By: ebiederm on Tue, 12 September 2006 03:26
		Re: Re: [RFC] network namespaces By: ebiederm on Sun, 10 September 2006 03:41
		Re: Re: [RFC] network namespaces By: Mishin Dmitry on Sun, 10 September 2006 08:11
		Re: Re: [RFC] network namespaces By: Herbert Poetzl on Sun, 10 September 2006 19:19
		Re: Re: [RFC] network namespaces By: Daniel Lezcano on Mon, 11 September 2006 14:40
		Re: Re: [RFC] network namespaces By: Herbert Poetzl on Mon, 11 September 2006 14:57
		Re: Re: [RFC] network namespaces By: Daniel Lezcano on Mon, 11 September 2006 15:04
		Re: Re: [RFC] network namespaces By: Mishin Dmitry on Mon, 11 September 2006 15:10
		Re: [RFC] network namespaces By: ebiederm on Tue, 12 September 2006 03:28
		Re: [RFC] network namespaces By: Mishin Dmitry on Tue, 12 September 2006 07:38
		Re: Re: [RFC] network namespaces By: ebiederm on Thu, 07 September 2006 19:50
		Re: Re: [RFC] network namespaces By: Daniel Lezcano on Wed, 06 September 2006 21:44
		Re: [RFC] network namespaces By: ebiederm on Wed, 06 September 2006 17:58
		Re: [RFC] network namespaces By: ebiederm on Tue, 05 September 2006 18:27
		Re: [RFC] network namespaces By: dev on Wed, 06 September 2006 14:52
		Re: [RFC] network namespaces By: Daniel Lezcano on Tue, 05 September 2006 15:32
		Re: [RFC] network namespaces By: dev on Tue, 05 September 2006 15:44
		Re: [RFC] network namespaces By: ebiederm on Tue, 05 September 2006 17:09
		Re: [RFC] network namespaces By: Cedric Le Goater on Wed, 06 September 2006 20:25
		Re: Re: [RFC] network namespaces By: kir on Wed, 06 September 2006 15:09
		Re: [RFC] network namespaces By: ebiederm on Wed, 06 September 2006 20:40
		Re: [RFC] network namespaces By: ebiederm on Wed, 06 September 2006 23:25
		Re: [RFC] network namespaces By: Stephen Hemminger on Thu, 07 September 2006 00:53
		Re: [RFC] network namespaces By: ebiederm on Thu, 07 September 2006 05:11
		Re: [RFC] network namespaces By: Daniel Lezcano on Wed, 04 October 2006 09:40
		Re: [RFC] network namespaces By: ebiederm on Sun, 10 September 2006 11:48

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