Re: [patch 2/6] [Network namespace] Network device sharing by view

Andrey Savochkin wrote:

Hi Daniel,

Hi Andrey,

It's good that you kicked off network namespace discussion.
Although I wish you'd Cc'ed someone at OpenVZ so I could notice it earlier :).

[email protected] ?

When a device presents an skb to the protocol layer, it needs to know to which
namespace this skb belongs.
Otherwise you would never get rid of problems with bind: what to do if device
eth1 is visible in namespace1, namespace2, and root namespace, and each
namespace has a socket bound to 0.0.0.0:80?

Exact. But, the idea was to retrieve the namespace from the routes.

IMHO, I think there are roughly 2 network isolation implementation:

	- make all network ressources private to the namespace

- keep a "flat" model where network ressources have a new identifier which is the network namespace pointer. The idea is to move only some network informations private to the namespace (eg port range, stats, ...)

  Daniel.
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