netisr software flowid

Hi.

What is the status for software flowid calculation? I found the old netisr2
patch[1] from Robert Watson and took from there code for setting flowid in
tcp_input with some changes[2]. It work for me very well (8.1-stable) - now the
server can handle not transit traffic without drops up to 118Kpps 60MB/s
incoming and up to 107Kpps 50MB/s outgoing, netisr dispatch packets via three
threads by round-robin:

 12 root     -44    -     0K   336K CPU2    2  18:43 56.15% {swi1: netisr 2}
 12 root     -44    -     0K   336K RUN     3  18:41 54.49% {swi1: netisr 3}
 12 root     -44    -     0K   336K CPU0    0  18:39 50.39% {swi1: netisr 0}
 12 root     -68    -     0K   336K WAIT    1   8:01 18.07% {irq256: bge0}

So, what the reason to exclude this code from final version?  

[1] http://www.watson.org/~robert/freebsd/netperf/20090523-netisr2.diff
[2] http://gate.kliksys.ru/~ai/software_flowid.diff