MPSAFE sppp(+fr support) cp cx ctau

Hi,

I am glad to announce stable version of patches for sppp, cp, ctau and cx
drivers with support of mpsafe.

SPPP:
Sppp will work in mpsafe mode only for adapters that do not have
IFF_NEEDSGIANT flag.
Also this patch contains if_spppfr.c with fr support for sppp (4).

CP/CX/CTAU:
Adapters will work in mpsafe mode only if both debug.mpsafenet
and debug.{cp|cx|ctau}.mpsafenet set to 1.

Patches (relative current) can be downloaded from:
http://people.freebsd.org/~rik/rik_netperf_20041128-1.pch

Please test them and let me know if you have any problems.

Patches were tested on Tau-PCI - Cisco 2500 at speed 4M
on Dual CPU system with ping-f and uptime ~one week.

rik