Sensitivity setting problem

Jouni Malinen jkmaline at
Mon Jun 23 21:55:04 EDT 2003

On Tue, Jun 24, 2003 at 12:04:21AM +0300, insecure wrote:

> I tried iwconfig wlan0 sens 1,2,3 but to no avail.
> I presume that foreign signal exceeds threshold at any of these
> settings.
> I've read the code and it seems hostap does not accept any other
> sens values.

Current version is mapping sensitivity configuration into Prism2
cnfSystemScale with those three options. However, this does not really
control what you would like to set with sensitivity threshold. Some of
the BBP control registers might be more helpful, but I have not
experimented with that kind of configuration.

> 22:49:11 kernel: wlan0: dropped received packet from 00:02:2d:51:3e:ab with no ToDS flag (type=0x02, subtype=0x00)
> 22:49:11 kernel: wlan0: RX signal=164 noise=156 rate=20 len=50 jiffies=14576029
> 22:49:11 kernel:    FC=0x0008 (type=2:0) dur=0x0000 seq=0x00f0
> 22:49:11 kernel:    A1=01:02:2d:61:49:cd A2=00:02:2d:51:3e:ab A3=00:00:00:00:00:00 A4=aa:aa:03:00:20:f6

That looks like a multicast frame from an (pseudo?) adhoc network..
Since the destination address is multicast, it will be delivered to the
driver in Host AP mode. That kernel message should probably be just
removed and those frames could then be silently dropped..

Jouni Malinen                                            PGP id EFC895FA

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