Re: [9fans] kernel updates

Re: [9fans] kernel updates

[dpx]

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Excellent, Thank you! 

I started on window scale option, but never got very far before 
getting side tracked. It would be really great to have.

-dp

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From: presotto@plan9.bell-labs.com
To: 9fans@cse.psu.edu
Subject: [9fans] kernel updates
Date: Tue, 16 Jul 2002 15:49:54 -0400
Message-ID: <0113a037afb5d6a94f6fb107a4fadb28@plan9.bell-labs.com>

I've copied a scad of changes onto the sources machine.  In
particular
- I've hacked the hell out of TCP to get rid of
    all the anomalies I could find.
  > The problem LANL was having with throughput
	dropping off drasticly with write size is gone.
  > we no longer do lots of needless retransmissions
  > IP CPU overhead is down (took out some high rollers)
- I've added SYN attack defenses.  I used the low
  state model rather than the SYN cookie one.
- a defense for NAPTHA DOS attacks from Dong Lin.

I don't think I've picked up any works in progress.
I still want to add scalable TCP windows but ran out
of time.  I'll do it in a few weeks.  It might help
with GB ethernet.

Re: [9fans] kernel updates

[Don]

> - I've added SYN attack defenses.  I used the low
>   state model rather than the SYN cookie one.
>
Thanks, I was actually going to mention something 
about this. I was attacked with two SYN floods
yesterday! :-)
Don

[9fans] kernel updates

[presotto]

I've copied a scad of changes onto the sources machine.  In
particular
- I've hacked the hell out of TCP to get rid of
    all the anomalies I could find.
  > The problem LANL was having with throughput
	dropping off drasticly with write size is gone.
  > we no longer do lots of needless retransmissions
  > IP CPU overhead is down (took out some high rollers)
- I've added SYN attack defenses.  I used the low
  state model rather than the SYN cookie one.
- a defense for NAPTHA DOS attacks from Dong Lin.

I don't think I've picked up any works in progress.
I still want to add scalable TCP windows but ran out
of time.  I'll do it in a few weeks.  It might help
with GB ethernet.