Stop embedding struct ifnet at the top of driver softcs. Instead the

struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.

This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.

Other changes of note:
 - Struct arpcom is no longer referenced in normal interface code.
   Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
   To enforce this ac_enaddr has been renamed to _ac_enaddr.
 - The second argument to ether_ifattach is now always the mac address
   from driver private storage rather than sometimes being ac_enaddr.

Reviewed by:	sobomax, sam

1 files changed, 1 insertions, 2 deletions

diff --git a/sys/net/if_tapvar.h b/sys/net/if_tapvar.h
index 1017bae..21bac50 100644
--- a/sys/net/if_tapvar.h
+++ b/sys/net/if_tapvar.h
@@ -46,8 +46,7 @@
  * Other fields locked by owning subsystems.
  */
 struct tap_softc {
-	struct arpcom	arpcom;			/* ethernet common data      */
-#define tap_if		arpcom.ac_if
+	struct ifnet	*tap_ifp;
 	u_short		tap_flags;		/* misc flags                */
 #define	TAP_OPEN	(1 << 0)
 #define	TAP_INITED	(1 << 1)