Re: signal/link quality wrong?
- From: Sven <sr12 duke edu>
- To: madwifi-users lists sourceforge net
- Cc: networkmanager-list gnome org
- Subject: Re: signal/link quality wrong?
- Date: Fri, 04 Feb 2005 17:10:42 -0500
sorry, small correction (stupid me):
max values should be:
range->max_qual.qual = 63; /* relative, MAX RSSI ... 60 for some cards */
range->max_qual.level = 0; /* level is in dBm */
range->max_qual.noise = 0; /* noise is in dBm */
see Jean Tourrilhes and Dan Williams posts at
mail.gnome.org/archives/networkmanager-list/2005-February/msg00066.html
changes in WExt API might happen.
Sven
On Fri, 2005-02-04 at 15:44 -0500, Sven wrote:
> what should be reported by the driver (as in
> net/ieee80211_wireless.c) is
>
> iq->qual = rssi; /* or some calibrated RSSI value */
> if (iq->qual > 63) /* this should be the MAX RSSI ... so it might be 60
> for some cards */
> iq->qual = 63;
> iq->noise = -95; /* noise floor in dBm, should be + real noise (needs to
> be determined) */
> iq->level = rssi - 95; /* -95 because that converts rssi to dBm. does
> noise belong here? */
>
> max values should also be set:
> range->max_qual.qual = 63; /* relative, MAX RSSI ... 60 for some cards
> */
> range->max_qual.level = -32; /* in dBm, MAX RSSI - 95, = -35 for some
> */
> range->max_qual.noise = -95; /* noise floor */
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