K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2015-03-25T14:36:17.693635Z
K 7
svn:log
V 921
In the head network stack an interface ifp->if_addrlen always matches
((struct sockaddr_dl *)ifp->if_addr->ifa_addr))->sdl_alen. We can use
either to determine interface address length. In the projects/ifnet,
the if_addrlen moves to ifdrv_addrlen, being the same for all instances
of a certain driver. However, the vlan(4) driver theoretically may
have different address length on different instances. We've got code
in vlan(4) that allows it to run on infiniband.

o Change if_addrlen() to return sdl_alen of hardware address instead
  of ifdrv_addrlen.
o Generalize setup of ifa_addr. Set up sdl->sdl_alen and copy the
  link level address in the if_attach(), instead of doing that in
  ether_ifattach/arc_ifattch/whatever_ifattach.
o Make ifat_lla an optional argument. An interface may not know its
  address at creation time, thus it will have address of all zeroes.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.

END