netdev - Re: [net-next PATCH v3] igbvf: add new driver to support 82576 virtual functions

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Date:	Wed, 25 Mar 2009 15:00:18 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, gospo@...hat.com,
	Alexander Duyck <alexander.h.duyck@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: Re: [net-next PATCH v3] igbvf: add new driver to support 82576 
	virtual functions

On Wed, Mar 25, 2009 at 2:52 PM, Jeff Kirsher
<jeffrey.t.kirsher@...el.com> wrote:
> From: Alexander Duyck <alexander.h.duyck@...el.com>
>
> This adds an igbvf driver to handle virtual functions provided by the
> igb driver when SR-IOV has been enabled.  A virtual function is a
> lightweight pci-e function that supports a single queue and shares
> resources with the 82576 physical function contained within the igb
> driver.
>
> To spawn virtual functions from the igb driver all that is needed is to
> issue a echo X > /sys/class/ethY/num_vfs.  X can be a value between 0 and
> 7, 0 will disable SR-IOV functionality for the port and is the default.  If
> the num_vfs sysfs entry is not present then the device does not have SR-IOV
> capability enabled either in software or hardware.
>
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> ---

Only difference between v2 and v3 is the addition of the following line

> +#include <linux/vmalloc.h>

into drivers/net/igbvf/ethtool.c.  We verified that this fixes the
compilation issues on PPC.

-- 
Cheers,
Jeff
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