adding if_dev member to struct ifnet

[Harti Brandt]

On Wed, 1 Oct 2003, Brooks Davis wrote:

BD>On Wed, Oct 01, 2003 at 09:34:22AM +0200, Harti Brandt wrote:
BD>> On Tue, 30 Sep 2003, Brooks Davis wrote:
BD>>
BD>> BD>All are within other code.  One example is in dev/mii/brgphy.c which a
BD>> BD>phy feature is not enabled when it is attached to some MACs.  A messier
BD>> BD>example is in the new ATM code where interfaces are looked up by name.
BD>>
BD>> Where is this?
BD>
BD>One example would be in sys/netatm/atm_if.c around line 1081.

Well, that's the old ATM code (HARP). An this place is not a problem,
because HARP physical interfaces live in their own name space - they
don't have a struct ifnet. A worse example is around line 1125. But, I
suppose we could just use the usual way to lookup an interface via it's
name and after that check that it is an HARP nif.

A more serious problem is how HARP allocates NIFs: the user specifies
a prefix and a number N. HARP then generates interfaces with names from
prefix0 to prefixN. This is the only place, where HARP really needs
a name and a unit number, but this is only to create a name for new
interfaces - the names are not parsed after that, so it should be no
problem to keep this stuff, except that we stuff the complete name into
if_xname.

All the other uses of if_name seem to be (...."%s%d", if_name, if_unit)...

harti
-- 
harti brandt,
http://www.fokus.fraunhofer.de/research/cc/cats/employees/hartmut.brandt/private
brandt at fokus.fraunhofer.de, harti at freebsd.org