netdev - Re: [net-next-2.6 PATCH 3/3] ixgbe: add a refcnt when turning on/off FCoE offload capability

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Message-Id: <20101021.035612.02273208.davem@davemloft.net>
Date:	Thu, 21 Oct 2010 03:56:12 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	netdev@...r.kernel.org, gospo@...hat.com, bphilips@...ell.com,
	yi.zou@...el.com
Subject: Re: [net-next-2.6 PATCH 3/3] ixgbe: add a refcnt when turning
 on/off FCoE offload capability

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Thu, 21 Oct 2010 02:00:30 -0700

> From: Yi Zou <yi.zou@...el.com>
> 
> The FCoE offload is enabled/disabled per adapter, but upper FCoE protocol
> stack could have multiple FCoE instances created on the same physical network
> interface, e.g., FCoE on multiple VLAN interfaces on the same physical
> network interface. In this case we want to turn on FCoE offload at the first
> request from ndo_fcoe_enable() but only turn off FCoE offload at the very last
> call to ndo_fcoe_disable(). This is fixed by adding a refcnt in the per adapter
> FCoE structure and tear down FCoE offload when refcnt decrements to zero.
> 
> Signed-off-by: Yi Zou <yi.zou@...el.com>
> Tested-by: Ross Brattain <ross.b.brattain@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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