linux-kernel - Re: Add a helper function in PCI IOV to get VF device

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Message-ID: <20100601183920.GB19955@kroah.com>
Date:	Tue, 1 Jun 2010 11:39:20 -0700
From:	Greg KH <greg@...ah.com>
To:	Frank Pan <frankpzh@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>,
	Yu Zhao <yu.zhao@...el.com>,
	Chris Wright <chrisw@...s-sol.org>,
	Mitch Williams <mitch.a.williams@...el.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"David S. Miller" <davem@...emloft.net>,
	Matt Carlson <mcarlson@...adcom.com>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Add a helper function in PCI IOV to get VF device

On Tue, Jun 01, 2010 at 01:05:25PM +0800, Frank Pan wrote:
> Greetings,
> 
> The motivation is make VF device visible to PF driver. PF driver
> may need this to access VF's PCI configuration.

What is "VF" and "PF" here?

> Another use case is in sysfs symbolic linking. Some of VF's sysfs
> entries are created by PF driver. For example, /sys/class/net/ethx/vfx
> in Intel 82576 NIC driver. Makeing a symbolic link from VF's pci device
> to this path also must be done in PF's driver.

No, the network core should create that symlink, not the driver, right?

thanks,

greg k-h
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