change t_idle to unsigned (should probably be long);
two new counters

move tcppredack, tcppreddat, tcppcbcachemiss into the TCP stats structure
Rich Stevens asked, Mike Karels agreed.

typo

4.4BSD snapshot (revision 8.1); add 1993 to copyright

prototype everything

include TUBA support for now

(By Sklower) checkpoint the current state of Cherenson's work.

new copyright notice

from van: add rttmin; cleanup timer code, use 4x rttvar;
add t_softerror; remove old compat for now

install approved copyright notice

add ifdef for IP_MAXPACKET

move stats known in 4.[23] to top on ifdef for netstat compat

branch for FTP release (#ifdefs for non-4.3)

use Berkeley specific header

two-phase slow start; pack again

Phil Karn's retransmit algorithm, using t_rxtcur for current rexmt value;
slow start from beginning if connection not local; get rtt estimate on SYN

redo retransmit calculations as srtt + 2*smoothed variance
(from Van Jacobson)

new stats

4.3BSD release version

more correct fix for TCP FIN seq problem: need to predecrement send_nxt
when resending FIN (for ack, etc.) but not retransmitting

add flag to avoid delay of short packets (Nagle algorithm)

maintain estimates of peer's send and receive buffer sizes;
don't wait for bigger window if he hasn't got one

move ip options to inpcb; read oob data once only; add var
for smarter delack code (maybe)

Add copyright

add snd_cwndw to decrease outstanding data after a source quench