linux-kernel - Re: [RFC 3/4] net: pppol2tp - introduce net-namespace functionality

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Message-ID: <20090110151958.GC29349@localhost>
Date:	Sat, 10 Jan 2009 18:19:58 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	James Chapman <jchapman@...alix.com>
Cc:	davem@...emloft.net, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, devel@...nvz.org, xemul@...nvz.org
Subject: Re: [RFC 3/4] net: pppol2tp - introduce net-namespace functionality

[James Chapman - Sat, Jan 10, 2009 at 03:05:13PM +0000]
| Cyrill Gorcunov wrote:
| > [Cyrill Gorcunov - Sat, Jan 10, 2009 at 02:13:59PM +0300]
| > | [James Chapman - Sat, Jan 10, 2009 at 11:06:08AM +0000]
| > | | Cyrill Gorcunov wrote:
| > | | > - Each tunnel and appropriate lock are inside own namespace now.
| > | | > - pppox code allows to create per-namespace sockets for
| > | | >   both PX_PROTO_OE and PX_PROTO_OL2TP protocols. Actually since
| > | | >   now pppox_create support net-namespaces new PPPo... protocols
| > | | >   (if they ever will be) should support net-namespace too otherwise
| > | | >   explicit check for &init_net would be needed.
| 
| Ok, I tested this in my L2TP setup. The first ppp session setup fails
| because the PPPIOCNEWUNIT ioctl returns -EEXIST. I think the problem is
|  the logic in ppp_create_interface(), which does the following to create
| a new ppp interface:
| 
|         /* Initialize the new ppp unit */
|         ppp->file.index = unit;
|         sprintf(dev->name, "ppp%d", unit);
| 
|         ret = register_netdev(dev);
| 
| Looks like there is more work to do in the ppp changes.
| 
| -- 
| James Chapman
| Katalix Systems Ltd
| http://www.katalix.com
| Catalysts for your Embedded Linux software development
| 

Thanks a lot James for testing!!! Will keep you in touch.
Thanks again!

		- Cyrill -
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