Date: Mon, 24 Jan 2011 23:08:38 +0000 (UTC) From: Lawrence Stewart <lstewart@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/modules/khelp Makefile src/sys/modules/khelp/h_ertt Makefile src/sys/netinet/khelp h_ertt.c h_ertt.h Message-ID: <201101242309.p0ON93X7070569@repoman.freebsd.org>
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lstewart 2011-01-24 23:08:38 UTC
FreeBSD src repository
Modified files:
sys/modules/khelp Makefile
Added files:
sys/modules/khelp/h_ertt Makefile
sys/netinet/khelp h_ertt.c h_ertt.h
Log:
SVN rev 217806 on 2011-01-24 23:08:38Z by lstewart
Import the ERTT (Enhanced Round Trip Time) Khelp module. ERTT uses the
Khelp/Hhook KPIs to hook into the TCP stack and maintain a per-connection, low
noise estimate of the instantaneous RTT. ERTT's implementation is robust even in
the face of delayed acknowledgements and/or TSO being in use for a connection.
A high quality, low noise RTT estimate is a requirement for applications such as
delay-based congestion control, for which we will be importing some algorithm
implementations shortly.
In collaboration with: David Hayes <dahayes at swin edu au> and
Grenville Armitage <garmitage at swin edu au>
Sponsored by: FreeBSD Foundation
Reviewed by: bz and others along the way
MFC after: 3 months
Revision Changes Path
1.2 +1 -1 src/sys/modules/khelp/Makefile
1.1 +9 -0 src/sys/modules/khelp/h_ertt/Makefile (new)
1.1 +545 -0 src/sys/netinet/khelp/h_ertt.c (new)
1.1 +89 -0 src/sys/netinet/khelp/h_ertt.h (new)
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