[Prism54-devel] Re: Strange problem with wds in prism54

Sergio Ammirata ammirata at econointl.com
Sat Apr 9 13:27:06 UTC 2005


Denis and Jean-Baptiste,

wds_find_device
wds_find_device: WDS from mac 01-80-c2-00-00-00 not in current config,
returning NULL
[01][80][c2][00][00][00][00][04][e2][80][7d][42][00][2e][42][42][03][00][00]
[00][00][00][00][0a][00][04][e2][80][7d][42][00][00][00][00][00][0a][00][04]
[e2][80][7d][42][80][02][00][00][3c][00][02][00][04][00][a5][a5][a5][a5][a5]
[a5][a5][a5]
wds_net_send_packet

This frame from my log is already coming from a hostap device. And I have
had that hostap device connect to commercial devices with wds. So hostap is
definitely wds compliant. We can assume the above packet is well formed and
adjust our code to read it properly.

[00][04][e2][80][7d][42] is the mac address of the hostap access point with
wds enabled against this device.

00:02:6F:22:9A:D7 is the mac address of our prism54 device.

Hope that helps,

Sergio

> -----Original Message-----
> From: prism54-devel-bounces at prism54.org [mailto:prism54-devel-
> bounces at prism54.org] On Behalf Of Denis Vlasenko
> Sent: Friday, April 08, 2005 9:37 AM
> To: Jean-Baptiste Note; Sergio Ammirata
> Cc: 'Jouni Malinen'; prism54-devel at prism54.org; 'Denis Vlasenko'
> Subject: Re: [Prism54-devel] Re: Strange problem with wds in prism54
> 
> On Friday 08 April 2005 12:19, Jean-Baptiste Note wrote:
> > > Here it the log that you asked for:
> > >
> > > wds_find_device
> > > wds_find_device: WDS from mac ff-ff-ff-ff-ff-ff not in current config,
> > > returning NULL
> > >
> [ff][ff][ff][ff][ff][ff][00][02][6f][21][1a][22][08][00][45][00][00][60][6
> 2]
> > >
> [9d][00][00][80][11][40][a5][c0][a8][0a][fb][c0][a8][0a][ff][00][89][00][8
> 9]
> > Maybe Jouni, Luis or Denis can make more sense of this mess; for me to
> > go on, would it be possible for you to put some device (may be your
> > prism54 card, but ideally some other) in monitor mode and sniff with
> > ethereal the frames that are sent on the air by the neighbor WDS device
> > ? -- i'd really like to sort out from the above packet which
> > transformation the raw 802.11 WDS frame undergoes before being delivered
> > to us.
> >
> > I don't think i have a working WDS device (maybe madwifi does it ?), so
> > it'll be difficult for me to carry out such tests; but i'll try if you
> > can't.
> 
> I can sniff hostap WDS frames for you easily. Presumably these
> are 'known good'.
> 
> Maybe I can capture prism54 WDS frames too (currently I ran out
> of PCI slots in the box).
> 
> Do you want me to do this?
> --
> vda
> 
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