Date: Wed, 23 Apr 2003 02:25:11 -0700 From: Pavlin Radoslavov <pavlin@icir.org> To: freebsd-net@freebsd.org Cc: suz@crl.hitachi.co.jp Subject: Request for review and commit of PIM patches Message-ID: <200304230925.h3N9PBmC024921@possum.icir.org>
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All, For quite some time I have been maintaining the IPv4 PIM kernel patches for *BSD, and I'd like to request for their inclusion in FreeBSD-current (and hopefully in the forthcoming 5.2 release). At high level, the patches include the following: 1. Basic PIM kernel support (similar to the support that has been already added to other UN*X flavors, including IPv6 from KAME, though the other implementations were based on an early version of those patches :)) Disabled by default. To enable it, the new "options PIM" must be added to the kernel configuration file (in addition to MROUTING): options MROUTING # Multicast routing options PIM # Protocol Independent Multicast 2. Few bug fixes to the existing multicast code. 3. Added support for advanced multicast API setup/configuration and extensibility. 4. Added support for kernel-level PIM Register encapsulation. 5. Implemented a mechanism for "multicast bandwidth monitoring and upcalls". 6. Pulled-out the IP fragmentation code from ip_output() into a new function ip_fragment(). This is basically same change that was done back in November 2002, but later was reversed-back due to its non-urgency at the time: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/ip_output.c?rev=1.171&content-type=text/x-cvsweb-markup The motivation for the additional changes on top of the basic PIM support is because of various limitations of the basic support. All those additional changes are completely backward compatible (both at the API and the binary level), so the new features will be used only if the user-level program explicitly tries to enable them. The patches against FreeBSD-current as of April 23, 2003 are available from: http://www.icir.org/pavlin/.private/pim/pim_freebsd_current_20030423.tar.gz The details about the changes are described in the README file. The README contains also installation information. Please let me know if you have any questions. Thank you, Pavlin Radoslavov Part of this work has been supported by the XORP project at ICSI http://www.xorp.org/ Acknowledgments: - Ahmed Helmy (USC) for the original PIM patches. - George Edmond Eddy (Rusty) (then at ISI) for various code modifications. - Hitoshi Asaeda (WIDE Project) for various modifications and porting to other *BSD flavors. - Andrew Adams (NextHop) for various suggestions and feedbacks. - Chris Brown (NextHop) for various feedbacks and for the co-design of the advanced multicast API setup/configuration. - Luigi Rizzo (U. of Pisa and ICSI) for the code audition back in November 2002. - All users who were brave enough to try those patches when they were still evolving.
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