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FreeBSD/Linux Kernel Cross Reference
sys/netipx/README

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    1 $FreeBSD$
    2 
    3 This protocol implements IPX/SPX over Ethernet_II frame type 0x8137.
    4 Please note: the SPX implementation may require further work and testing
    5 to insure proper operation.
    6 
    7 Mike Mitchell, Network Engineer
    8 AMTECH Systems Corporation, Technology and Manufacturing
    9 8600 Jefferson Street, Albuquerque, New Mexico 87113 (505) 856-8000
   10 supervisor@alb.asctmd.com
   11 
   12 John Hay
   13 Some Company
   14 Some Address
   15 jhay@mikom.csir.co.za
   16 
   17 Adapted for multi-processor, multi-threaded network stack by Robert N. M.
   18 Watson, Computer Laboratory, University of Cambridge.
   19 
   20 --- Copyright Information ---
   21 /*-
   22 
   23 Copyright (c) 1984, 1985, 1986, 1987, 1993
   24 The Regents of the University of California.  All rights reserved.
   25 
   26 Modifications Copyright (c) 1995, Mike Mitchell
   27 Modifications Copyright (c) 1995, John Hay
   28 Modifications Copyright (c) 2004-2006 Robert N. M. Watson
   29 
   30 */
   31 
   32 --- TODO ---
   33 
   34 (1) netipx default socket buffer sizes are very small by contemporary
   35     standards, and should be increased following testing and measurement.
   36 
   37 (2) SPX will free the PCB and socket buffer memory on close(), which means
   38     close() in effects terminates the transfer of any outstanding buffered
   39     but unsent data.  As with TCP, it should instead grab its own
   40     reference to the socket so that it is not released, as hold onto it
   41     until the data transfer is complete.
   42 
   43 (3) Raw socket capture of IPX output intercepts packets in the SPX output
   44     routine in order to feed them back into the raw socket.  This results
   45     in recursion into the socket code in the transmit path; instead,
   46     captured packets should be fed into a netisr that reinjects them into
   47     raw sockets from a new (asynchronous) context.
   48 
   49 (4) IPX over IP encapsulation needs work to make it properly MPSAFE.

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