Date: Fri, 19 Feb 2010 17:17:25 +1100 From: David Hayes <dahayes@swin.edu.au> To: end2end-interest@postel.org, iccrg@cs.ucl.ac.uk, freebsd-net@freebsd.org Cc: Lawrence Stewart <lastewart@swin.edu.au>, grenville armitage <garmitage@swin.edu.au> Subject: Software for FreeBSD TCP R&D Message-ID: <20100219061725.GA91121@dhayes.caia.swin.edu.au>
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Hi All, We're pleased to announce the release of a substantial set of new and updated software for TCP research using FreeBSD: - Hamilton Delay Congestion Control Algorithm v0.1 (new) - Vegas Congestion Control Algorithm v0.1 (new) - ERTT Khelp Module v0.1 (new) - Khelp Framework for FreeBSD v0.1.0 (new) - Modular TCP Congestion Control for FreeBSD v0.9.4 (update) Everything is available from [1] as BSD licenced source, along with other papers, patches and software relevant/useful for protocol analysis, debugging and experimental research. Hamilton Delay Congestion Control Algorithm v0.1 [2,3] ------------------------------------------------ A FreeBSD loadable kernel module that implements an experimental delay based congestion control algorithm proposed by the Hamilton Institute [4]. It provides a first step toward the ability of delay based algorithms to fairly coexist with loss based algorithms. Vegas Congestion Control Algorithm v0.1 [5,6] -------------------------------------- A FreeBSD loadable kernel module that implements the VEGAS congestion control algorithm [7]. ERTT Khelp Module v0.1 [8,9] ---------------------- A FreeBSD loadable kernel module that provides Enhanced Round Trip Time (ERTT) measurements for use by delay and rate based TCP congestion control algorithms. Robust estimates of RTT are provided even when the receiver uses delayed acknowledgements, TCP segmentation offload (TSO) or Selective Acknowledgements (SACK). This module is required by the delay based congestion control algorithms. Khelp Framework for FreeBSD v0.1.0 [10,11] ---------------------------------- A FreeBSD kernel patch that provides support for generic kernel modules known as "helpers" to hook into arbitrary points within the kernel and provide service(s) to the running system. This forms the foundation for the ERTT Khelp module. Modular TCP Congestion Control for FreeBSD v0.9.4 [12,13] ------------------------------------------------- This revision of the Modular TCP Congestion control framework patch provides a current snapshot of the project's subversion branch, with numerous tweaks, bug fixes and enhancements to support the new delay based congestion control algorithms we have been working on. This software was developed as part of the NewTCP research project at Swinburne University's Centre for Advanced Internet Architectures, made possible in part by a grant from the Cisco University Research Program Fund at Community Foundation Silicon Valley. Testing and development was further assisted by a grant from the FreeBSD Foundation. We welcome any feedback and hope you enjoy playing with the code and tools. Cheers, David Hayes, Lawrence Stewart and Grenville Armitage http://caia.swin.edu.au [1] http://caia.swin.edu.au/urp/newtcp/tools.html [2] http://caia.swin.edu.au/newtcp/tools/cc_hd-0.1.tar.gz [3] http://caia.swin.edu.au/newtcp/tools/cc_hd-readme-0.1.txt [4] L. Budzisz, R. Stanojevic, R. Shorten, and F. Baker, "A strategy for fair coexistence of loss and delay-based congestion control algorithms", IEEE Commun. Lett., vol. 13, no. 7, pp. 555-557, Jul. 2009. [5] http://caia.swin.edu.au/newtcp/tools/cc_vegas-0.1.tar.gz [6] http://caia.swin.edu.au/newtcp/tools/cc_vegas-readme-0.1.txt [7] L. S. Brakmo and L. L. Peterson, "TCP Vegas: end to end congestion avoidance on a global internet", IEEE J. Sel. Areas Commun., vol. 13, no. 8, pp. 1465-1480, Oct. 1995. [8] http://caia.swin.edu.au/newtcp/tools/h_ertt-0.1.tar.gz [9] http://caia.swin.edu.au/newtcp/tools/h_ertt-readme-0.1.txt [10] http://caia.swin.edu.au/newtcp/tools/caia_khelp_framework_v0.1.0_9.x.r203910.patch [11] http://caia.swin.edu.au/newtcp/tools/khelp-readme-0.1.0.txt [12] http://caia.swin.edu.au/newtcp/tools/caia_modularcc_v0.9.4_9.x.r203910.patch [13] http://caia.swin.edu.au/newtcp/tools/modularcc-readme-0.9.4.txt -- David Hayes Research Fellow Centre for Advanced Internet Architectures Faculty of Information and Communication Technologies Swinburne University of Technology, Australia http://caia.swin.edu.au/cv/dahayes/
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