HW VLAN Filtering on FreeBSD 6.3 + 7.0

[Pyun YongHyeon]

On Sun, Nov 16, 2008 at 02:27:36PM +0200, Yony Yossef wrote:
 > >
 > >  > I would like to enable my NIC HW VLAN filtering, is there any way for
 > > my
 > > > driver to access the OS vlan table? (something like vlan_group_get_device
 > > on
 > > > linux)
 > > >
 > > > I understood from previous investigation that on FreeBSD 6.3 and 7.0
 > > there's
 > > > no ioctl informing the driver of vlan addition/removal. Is that correct?
 > >
 > > Man pages to check out: vlan(4) and ifconfig(8).  I'm pretty sure the
 > > vlan tagging feature is per-driver.
 > 
 > 
 > > Also, the vlan(4) list of supported drivers is out of date (for example,
 > > em(4) is missing), so be sure to check the man page of your NIC driver.
 > 
 > 
 > Sorry, i explained myself pretty bad. I'm working on an Ethernet driver for
 > FreeBSD.
 > The VLAN hw tagging is already working properly, but my nic is capable of
 > holding a vlan table on hw, filtering vlans on it's own.
 > I need to find a way to update that hw table.
 > one way is to recieve a ioctl from the OS of it's vlan table event (add,
 > remove). I can't find such ioctl.

FreeBSD doesn't use ioctl to manipulate VLAN HW table.

 > second is to have a direct access from the driver to the OS vlan table. I'm
 > not familiar with the interface or if it's possible at all, and that is my
 > actual question.
 > 

See EVENT_HANDLER(9) and igb(4) for working example.

-- 
Regards,
Pyun YongHyeon