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, 2 deletions

diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 056ffb6..ce3a217 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -974,7 +974,7 @@ smart_frag_failure:
 			goto done;
 		}
 		m->m_pkthdr.len = mhlen + len;
-		m->m_pkthdr.rcvif = (struct ifnet *)0;
+		m->m_pkthdr.rcvif = NULL;
 #ifdef MAC
 		mac_create_fragment(m0, m);
 #endif
@@ -1069,7 +1069,7 @@ ip_insertoptions(m, opt, phlen)
 			return (m);
 		}
 		M_MOVE_PKTHDR(n, m);
-		n->m_pkthdr.rcvif = (struct ifnet *)0;
+		n->m_pkthdr.rcvif = NULL;
 #ifdef MAC
 		mac_create_mbuf_from_mbuf(m, n);
 #endif