thanks for the info. i will try to look into this issue, but as my programming skills are virtually nonexistent i will have to leave patches to others. there is a great whitepaper on this issue: www.wildpackets.com/elements/whitepapers/Converting_Signal_Strength.pdf as seen at http://mail.gnome.org/archives/networkmanager-list/2005-February/msg00031.html which incidentally includes a patch for Ipw2100.
thanks again, Sven On Thu, 2005-02-03 at 08:44 -0800, Sam Leffler wrote: > Sven wrote: > > hi, > > > > there has been some discussion on the NetworkManager mailing list about > > the madwifi driver (and others) and the way the driver reports "Link > > Quality" (eg, in iwconfig or in /poc/net/wireless). > > ...stuff snipped.. > > At present you can only get rssi data that is reported relative to the > current noise floor. The noise floor is "uncalibrated"; i.e. real world > units are not available (unless you know certain info about the > construction of the final product). We're likely to add some form of > noise indication derived from looking at the noise floor data for other > channels (found while scanning) but otherwise that's what's there. The > current code assumes a specific noise floor and calculates data based on it. > > When I look for signal quality/strength I monitor rssi and implicitly > derive link quality based on a range of 0-63 (or 60 for some cards). > > Given the above please suggest a patch to improve the current code and > we'll consider it. Do not assume there is noise data as I've no idea > when that'll be available. > > Sam > > PS. A separate issue is that the rssi data is potentially calculated > with "uninteresting frames"; e.g. in station mode the driver > could/should ignore frames from stations not in the bss. _______________________________________________ NetworkManager-list mailing list NetworkManager-list@gnome.org http://mail.gnome.org/mailman/listinfo/networkmanager-list