Addition to the vlan driver

[Andrew Snow]

Jack Vogel wrote:
> What I would like to do is add some code into the vlan_ioctl() routine
> that will make a call
> to the PARENT ioctl with SETVLAN type and an argument of the tag.
> 
> By doing this both the em and igb drivers will be able to enable
> hardware vlan filtering as
> well, a feature we've never been able to use.

I don't think vlan filtering is needed much, since I always use VLANs
with switches that do the filtering at the port level.  But it still
sounds like a good idea and I can't think why not.

- Andrew