Ping Pan: Public Software

Starting January 2000, all my research projects have been developed on FreeBSD, and the source code are free. It's due to (1) for some boys, a girl's attractiveness is directly proportional to her availability, and (2) big companies cannot freeze free code. Since I have a thesis and some papers to write, so the code may be buggy (sorry about that). Please forward bug reports to pingpan@cs.columbia.edu. 

• PF_IPOPTION: a new BSD socket protocol family for capturing IP option packets through raw socket.

  • Document (with definitions and performance)
  • Source Code
  • Status: 
    • tested on FreeBSD 3.3, 3.4, 3.5 and 4.0;
    • worked well.

• ipodump: a command to capture and print IP option packets on a system.

  • Man page
  • Source Code 
  • Status:
    • tested on FreeBSD 3.3, 3.4, 3.5 and 4.0;
    • worked well;
    • didn't finish writing the detailed protocol parsing stuff.

• YESSIR: a lightweight reservation protocol implementation

  • YESSIR homepage;
  • Protocol specification (check the header files for now, :-))
  • Source Code
  • Misc:
    • need to have PF_IPOPTION kernel extension;
    • it's a good idea to use Henning's rtptool for testing.
  • Status:
    • tested on FreeBSD 3.3, 3.4, 3.5 and 4.0;
    • protocol forwarding path is pretty fast (10K reservations-per-second on a 700 MHZ Pentium);
    • a cool command interface, yestat, that allows users to config/debug/query both remotely and locally (I will convert the underlying interface to COPS when I have time);
    • unicast routing interface works well;
    • interface management seems to be well (not enough interface cards to play with);
    • no multicast interface yet;
    • DiffServ interface is not completed yet;
    • there is a bug somewhere in the soft-state timer that crapping up once in a while.