Subject: Re: TCP/Westwood+ support.
To: Charles M. Hannum <abuse@spamalicious.com>
From: Kentaro A. Kurahone <kurahone@sekhmet.sigusr1.org>
List: tech-kern
Date: 01/01/2005 20:04:15
On Sat, Jan 01, 2005 at 07:52:21PM +0000, Charles M. Hannum wrote:
> On Saturday 01 January 2005 19:22, Charles M. Hannum wrote:
> > b) On a fast retransmit, the congestion window is initialized to ssthresh
> > -- in other words, we always set to the linear growth point on a fast
> > retransmit, and never do exponential growth again, except in the case of
> > slow retransmit (or CWM).
>
> Actually, I'm really confused by this code. AFAICT, you're never actually
> doing the fast retransmit; the code that does it is after your "if
> (tcp_do_westwood_p) {... goto drop;}". This would, I think, force you to be
> doing slow-retransmit all the time.
Crud. You're right. Need to spend more time with Stevens' vol 2 I guess.
Thanks for all the feedback,
--
Kentaro A. Kurahone
SIGUSR1 Research and Development
"I am having a hallucination now, I don't need drugs for that."