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Re: Linux TCP/IP wedges talking to DG AViiON

daemon@ATHENA.MIT.EDU (Kris Karas)
Wed Jun 5 19:50:37 1996

Date: 	Wed, 05 Jun 1996 18:53:06 -0400
From: Kris Karas <ktk@bih.harvard.edu>
To: mike@toaster.roan.co.uk
CC: linux-net@vger.rutgers.edu

mike@toaster.roan.co.uk wrote:
> >I think you need to refer that tcpdump to AViiON.
> This looks suspiciously like the sort of behaviour I've seen talking
> to a SCO OS5 machine. How difficult would it be to put a kludge around
> in the Linux code?
Additionally, I can see it causing performance problems sending packets
over a slow serial link, if an entire 1K+ byte packet gets sent just for
the purpose of the few new bytes made available when the window opens
up.  Alan confirmed my suggestion of hacking somewhere around
tcp_write_wakeup() to sock_mwalloc a new packet, create a new checksum
for it, then add it to the transmit queue.  I wouldn't trust myself to
do it, as I've never actually hacked the network driver under Linux.

-- 
Kris Karas | ktk@bih.harvard.edu | http://ktk.bih.harvard.edu/~ktk/
AMA 463814 | RF900RR HawkGT !car | Will design LISP machines for food.
AMACCS 274 | PGP Available       | *disclaimer* -> "I barely speak for
DoD   1236 |                     | myself, much less anybody else."


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