* hoist code to deal with fragments of a 16-byte chunk outside
main copy loop.
* over 98% of dynamic calls are 2-byte-algnied but not 4-byte-aligned
(due to 14-byte Ether headers). kernel bcopy is poorly tune for this.
Replace bcopy() with inline code tuned to minimize accesses
to DMA buffers, which aren't uncached on mips.
Tested on 5000/240 (3MAXPLUS) and 3000/700 (sandpiper) (mjacob@feral.com)
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will
only support Ethernet. Tcpdump itself should be ok, but libpcap needs
lot of work.
For the detailed change history, look at the commit log entries for
the is-newarp branch.
naming conflicts between bus attachments on ports that can have
multiple instances of the LANCE.
Changed struct ifnet to have a pointer to the softc of the underlying
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_reset)()
to take a struct ifnet *, rather than a unit number.
