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freebsd/sys/netipx/README
Robert Watson e3c26fb50d Add a simple netipx TODO list to the end of README, since there are a
number of problems with netipx that I have not yet resolved, and I
don't want them lost track of.

MFC after:	1 month
2006-03-27 09:10:09 +00:00

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