cubic patch

[Mihai Chelaru <mihai.chelaru%ngnetworks.ro@localhost>]

Hi,

I wrote a little piece of code[1] that should provide us CUBIC congestion 
control algorithm. Of course, default is still newreno and cubic may be 
activated using   sysctl -w net.inet.tcp.congctl.selected=cubic .

Also in this patch I removed the tcp_sack_newack function that mostly 
duplicated newreno actions and moved the code mostly inside [new]reno.

Happy testing and please feedback !

[1] - ftp://ftp.netbsd.org/pub/NetBSD/misc/kefren/cubic-current.diff


Thanks,

-- 
Mihai Chelaru