From owner-freebsd-net  Sun Nov 18 10:15: 8 2001
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From: Archie Cobbs <archie@dellroad.org>
Message-Id: <200111181811.fAIIBhn04563@arch20m.dellroad.org>
Subject: Re: t_dupacks to u_int?
In-Reply-To: <20011117192306.A97092@prism.flugsvamp.com> "from Jonathan Lemon
 at Nov 17, 2001 07:23:06 pm"
To: Jonathan Lemon <jlemon@flugsvamp.com>
Date: Sun, 18 Nov 2001 10:11:43 -0800 (PST)
Cc: Alfred Perlstein <bright@mu.org>, net@FreeBSD.ORG
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Jonathan Lemon writes:
> On the surface, I don't see a problem with it, but I wonder why you
> believe it is needed.  Changing the value of rexmttresh is probably
> not a good idea, and I would definitely prefer not to expose it as a
> user tunable knob.
> 
> On Sat, Nov 17, 2001 at 06:51:02PM -0600, Alfred Perlstein wrote:
> > Any problems with this?
> >  
> > -static int	tcprexmtthresh = 3;
> > +static unsigned int	tcprexmtthresh = 3;
> > +SYSCTL_UINT(_net_inet_tcp, OID_AUTO, rexmtthresh, CTLFLAG_RW,
> > +    &tcprexmtthresh, 0, "Max duplicate acks before fast rexmit");
> > +

How about a kernel option TCP_TWEAKS or something that would
expose these 'dangerous' sysctl's for people to play with.

-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com

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