dyoung b480b62270 Make many ethernet drivers share the common code for MII media
handling, ether_mediastatus() and ether_mediachange().  Check for
a non-ENXIO error return from mii_mediachg().  (ENXIO indicates
that a PHY is suspended.)

This patch shrinks the source code size by 979 lines.  There was
a 5100-byte savings on the NetBSD/i386 kernel configuration, ALL.

I have made a few miscellaneous changes, too:

gem(4): use LIST_EMPTY(), LIST_FOREACH().
mtd(4): handle media ioctls, for a change!
axe(4): do not track link status in sc->axe_link any longer
nfe(4), aue(4), axe(4), udav(4), url(4): do not reset all PHYs
        on a change of media

Except for the change to mtd(4), no functional changes are intended.

XXX This patch affects more architectures than I can feasibly
XXX compile and run.  I have compiled macppc, sparc64, i386.  I
XXX have run the patches on i386 boxen with bnx(4) and sip(4).
XXX Compiling and running on evbmips (MERAKI, ADM5120) is in
XXX progress.
2008-01-19 22:10:14 +00:00
..