From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wright <chrisw@redhat.com>
Subject: Re: [net-next-2.6 V6 PATCH 1/2] Add netlink support for virtual port
 management (was iovnl)
Date: Thu, 13 May 2010 13:46:14 -0700
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Cc: Scott Feldman <scofeldm@cisco.com>, davem@davemloft.net,
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To: Patrick McHardy <kaber@trash.net>
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* Patrick McHardy (kaber@trash.net) wrote:
> > +	} else  {
> > +		err = rtnl_vf_port_fill_nest(skb, dev, -1);
> 
> What does -1 mean?

It means no VFs.  Could be made a macro/enum constant

thanks,
-chris