CVS commit: src/sys/netinet

["Greg Troxel" <gdt%netbsd.org@localhost>]

Module Name:    src
Committed By:   gdt
Date:           Wed Apr 20 13:35:52 UTC 2011

Modified Files:
        src/sys/netinet: tcp_input.c tcp_subr.c tcp_timer.c tcp_timer.h
            tcp_var.h

Log Message:
Rewrite comments about TCP RTO calculations.

Long ago, the storage representations of srtt and rttvar were changed
from the 4.4BSD scheme, and the comments are out of sync with the
code.  This commit rewrites most of the comments that explain the RTO
calculations, and points out some issues in the code.

Joint work with Bev Schwartz of BBN (original analysis and comments),
but I have rewritten and extended them, so errors are mine.

This material is based upon work supported by the Defense Advanced
Research Projects Agency and Space and Naval Warfare Systems Center,
Pacific, under Contract No. N66001-09-C-2073.  Approved for Public
Release, Distribution Unlimited


To generate a diff of this commit:
cvs rdiff -u -r1.308 -r1.309 src/sys/netinet/tcp_input.c
cvs rdiff -u -r1.238 -r1.239 src/sys/netinet/tcp_subr.c
cvs rdiff -u -r1.84 -r1.85 src/sys/netinet/tcp_timer.c
cvs rdiff -u -r1.26 -r1.27 src/sys/netinet/tcp_timer.h
cvs rdiff -u -r1.163 -r1.164 src/sys/netinet/tcp_var.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.