From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Patrick McHardy <kaber@trash.net>
Cc: Ramachandra K <ramachandra.kuchimanchi@qlogic.com>,
Amar Mudrankit <amar.mudrankit@qlogic.com>,
netdev@vger.kernel.org, general@lists.openfabrics.org,
rdreier@cisco.com, poornima.kamath@qlogic.com
Subject: Re: [ofa-general] Re: [PATCH v4 14/14] QLogic VNIC: sysfs Documentation
Date: Wed, 18 Jun 2008 12:21:48 -0600 [thread overview]
Message-ID: <20080618182148.GD28285@obsidianresearch.com> (raw)
In-Reply-To: <485901A8.8060705@trash.net>
On Wed, Jun 18, 2008 at 02:38:00PM +0200, Patrick McHardy wrote:
>> Currently we register netdevice only after we have made sure that
>> we can connect to the EVIC and that there are enough resources on
>> the EVIC to support this virtual ethernet interface. But if we
>> register the netdevice without making sure that we can reach the
>> EVIC and that it has resources, there is a possibility that we
>> register a netdevice that can never become active.
>
> Thats similar to a ethernet device that never has a cable
> plugged in. You should register the device with its carrier
> turned off, then change the carrier state once the connection
> has been established.
I would also encourage you to embrace this view of the VNIC as a
tunnel fully and let the administrator re-target an active netdevice
to a different VNIC without tearing down the netdevice..
The user space interface for that pretty much come for free with the
netlink implementation, one of the advantages I suppose..
Jason
next prev parent reply other threads:[~2008-06-18 18:21 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-10 21:02 [ofa-general] [PATCH v4 00/14] QLogic VNIC Driver Ramachandra K
2008-06-10 21:02 ` [ofa-general] [PATCH v4 01/14] QLogic VNIC: Driver - netdev implementation Ramachandra K
2008-06-10 21:03 ` [ofa-general] [PATCH v4 02/14] QLogic VNIC: Netpath - abstraction of connection to EVIC/VEx Ramachandra K
2008-06-10 21:03 ` [ofa-general] [PATCH v4 03/14] QLogic VNIC: Implementation of communication protocol with EVIC/VEx Ramachandra K
2008-06-10 21:04 ` [ofa-general] [PATCH v4 04/14] QLogic VNIC: Implementation of Control path of communication protocol Ramachandra K
2008-06-10 22:21 ` Stephen Hemminger
2008-06-10 21:04 ` [ofa-general] [PATCH v4 05/14] QLogic VNIC: Implementation of Data " Ramachandra K
2008-06-10 21:05 ` [ofa-general] [PATCH v4 06/14] QLogic VNIC: IB core stack interaction Ramachandra K
2008-06-10 21:05 ` [ofa-general] [PATCH v4 07/14] QLogic VNIC: Handling configurable parameters of the driver Ramachandra K
2008-06-10 21:06 ` [ofa-general] [PATCH v4 08/14] QLogic VNIC: sysfs interface implementation for " Ramachandra K
2008-06-10 21:06 ` [ofa-general] [PATCH v4 09/14] QLogic VNIC: IB Multicast for Ethernet broadcast/multicast Ramachandra K
2008-06-10 21:07 ` [ofa-general] [PATCH v4 10/14] QLogic VNIC: Driver Statistics collection Ramachandra K
2008-06-10 21:07 ` [PATCH v4 11/14] QLogic VNIC: Driver utility file - implements various utility macros Ramachandra K
2008-06-10 21:08 ` [PATCH v4 12/14] QLogic VNIC: Driver Kconfig and Makefile Ramachandra K
2008-06-10 21:08 ` [ofa-general] [PATCH v4 13/14] QLogic VNIC: Modifications to IB " Ramachandra K
2008-06-10 21:09 ` [ofa-general] [PATCH v4 14/14] QLogic VNIC: sysfs Documentation Ramachandra K
2008-06-11 6:47 ` Patrick McHardy
2008-06-12 15:13 ` [ofa-general] " Amar Mudrankit
2008-06-12 15:18 ` Patrick McHardy
2008-06-12 15:29 ` Ramachandra K
2008-06-12 15:34 ` Patrick McHardy
2008-06-12 20:22 ` Jeff Garzik
2008-06-14 18:03 ` Roland Dreier
2008-06-14 19:03 ` Jason Gunthorpe
2008-06-16 8:54 ` Patrick McHardy
2008-06-18 12:32 ` Ramachandra K
2008-06-18 12:38 ` Patrick McHardy
2008-06-18 18:21 ` Jason Gunthorpe [this message]
2008-06-19 1:19 ` Patrick McHardy
2008-06-19 1:26 ` Patrick McHardy
2008-06-12 15:50 ` Ramachandra K
2008-06-12 16:03 ` Patrick McHardy
2008-06-12 21:09 ` Amar Mudrankit
2008-06-13 15:20 ` Patrick McHardy
2008-06-13 21:47 ` Amar Mudrankit
2008-06-14 8:08 ` Patrick McHardy
2008-06-16 19:44 ` Amar Mudrankit
2008-06-16 20:39 ` Patrick McHardy
2008-06-12 16:04 ` Karen Shaeffer
2008-06-12 15:21 ` [ofa-general] [PATCH v4 00/14] QLogic VNIC Driver Ramachandra K
2008-06-12 15:35 ` Patrick McHardy
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