Question/Bug report against hamachi Linux driver?

Tue Nov 30 17:39:59 1999

On Tue, Nov 30, 1999 at 11:15:01PM +0100, Bernhard Kaindl wrote:
> On Tue, 30 Nov 1999, Lawrence MacIntyre wrote:
> > 
> > When I do this, I get a 1480 and a 528 byte packet and it works just
> > fine.  I'm running the latest from Donald Becker on some machines and
> > Eric Kasten's version on the others.  I've got 3 pentiums and one
> > alpha.  I can't explain why yours is doing that.  The kernels are 2.2.5,
> > 2.2.9, and 2.0.36.  Maybe the 2.2.13 kernel has changed something?
> 
> In 2.2.13 a bug in the packet scheduler was fixed which caused a first packet
> only being sent out when a second has to be sent out. Maybe the bug was not
> fully ir incorrectly fixed? Knowing if 2.2.12 or one of the kernels you
> sue fix the problem would be helpful to know. For what it's worth, this is
> the change in the packet scheduler which has been done in 2.2.13:
> 
> --- v2.2.12/linux/net/sched/sch_generic.c       Sun Mar 21 07:22:00 1999
> +++ linux/net/sched/sch_generic.c       Tue Oct 19 17:14:02 1999
> @@ -419,6 +419,7 @@
>                 for (hp = &qdisc_head.forw; (h = *hp) != &qdisc_head; hp = &h->f
>                         if (h == &qdisc->h) {
>                                 *hp = h->forw;
> +                               h->forw = NULL;
>                                 break;
>                         }
>                 }
> 
> The problem fixed by this change was known as the multible-second ping time bug:
> You started a ping with one second interval and you got ping times of 1,2,3,4,5
> seconds+the usual delay of the network.
> 
> Bernd
> 
> > 

The kernel I am running (the default RedHat 6.1 kernel) has this fix in it.
I thought I was running 2.2.13, but I'm running 2.2.12 + whatever RedHat added.
I'll try 2.2.13 and see if it makes a difference.

Thanks
Paolo

-- 
Paolo Galtieri                            Principal Software Engineer
Motorola Computer Group                   INTERNET: peg@phx.mcd.mot.com
2900 S. Diablo Way                        VOICE: (602) 438 - 3754
Tempe, AZ 85282

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