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, 1 deletions

diff --git a/sys/dev/ixgb/if_ixgb.h b/sys/dev/ixgb/if_ixgb.h
index 0a8981b..5d7b4d9 100644
--- a/sys/dev/ixgb/if_ixgb.h
+++ b/sys/dev/ixgb/if_ixgb.h
@@ -51,6 +51,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <net/ethernet.h>
 #include <net/if_dl.h>
 #include <net/if_media.h>
+#include <net/if_types.h>
 
 #include <net/bpf.h>
 #include <net/if_types.h>
@@ -270,7 +271,7 @@ typedef enum _XSUM_CONTEXT_T {
 
 /* Our adapter structure */
 struct adapter {
-	struct arpcom   interface_data;
+	struct ifnet   *ifp;
 	struct adapter *next;
 	struct adapter *prev;
 	struct ixgb_hw  hw;