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, 2 insertions, 4 deletions

diff --git a/sys/dev/de/if_devar.h b/sys/dev/de/if_devar.h
index ee02be5..54ed8d6 100644
--- a/sys/dev/de/if_devar.h
+++ b/sys/dev/de/if_devar.h
@@ -521,7 +521,8 @@ struct tulip_softc {
 	unsigned int		tulip_rxmaps_free;
 #endif
 #endif
-	struct arpcom		tulip_ac;	/* XXX should be at start */
+	struct ifnet		*tulip_ifp;
+	u_char			tulip_enaddr[6];
 	bus_space_tag_t		tulip_csrs_bst;
 	bus_space_handle_t	tulip_csrs_bsh;
 	tulip_regfile_t		tulip_csrs;
@@ -584,9 +585,6 @@ struct tulip_softc {
 	tulip_desc_t		*tulip_rxdescs;
 	tulip_desc_t		*tulip_txdescs;
 };
-#define	tulip_if	tulip_ac.ac_if
-#define	tulip_xname	tulip_if.if_xname
-#define	tulip_enaddr	tulip_ac.ac_enaddr
 
 #define	tulip_curperfstats	tulip_perfstats[TULIP_PERF_CURRENT]
 #define	tulip_probe_count	tulip_probe.probe_count