netdev - Re: [RFD] L2 Network namespace infrastructure

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Date:	Sat, 23 Jun 2007 08:20:40 -0700
From:	Ben Greear <greearb@...delatech.com>
To:	Patrick McHardy <kaber@...sh.net>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
	jamal <hadi@...erus.ca>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Jeff Garzik <jeff@...zik.org>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	Linux Containers <containers@...ts.osdl.org>
Subject: Re: [RFD] L2 Network namespace infrastructure

Patrick McHardy wrote:
> Eric W. Biederman wrote:
>   
>> -- The basic design
>>
>> There will be a network namespace structure that holds the global
>> variables for a network namespace, making those global variables
>> per network namespace.
>>
>> One of those per network namespace global variables will be the
>> loopback device.  Which means the network namespace a packet resides
>> in can be found simply by examining the network device or the socket
>> the packet is traversing.
>>
>> Either a pointer to this global structure will be passed into
>> the functions that need to reference per network namespace variables
>> or a structure that is already passed in (such as the network device)
>> will be modified to contain a pointer to the network namespace
>> structure.
>>     
>
>
> I believe OpenVZ stores the current namespace somewhere global,
> which avoids passing the namespace around. Couldn't you do this
> as well?
>   
Will we be able to have a single application be in multiple name-spaces?

Thanks,
Ben

-- 
Ben Greear <greearb@...delatech.com> 
Candela Technologies Inc  http://www.candelatech.com


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