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-rw-r--r--net/mac80211/wext.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index 8a76a979bc92..a8d4b6171916 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -200,10 +200,24 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev,
else
range->max_qual.noise = 0;
- range->max_qual.qual = 100;
range->max_qual.updated = ieee80211_get_wstats_flags(local);
- range->avg_qual.qual = 50;
+ if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
+ /*
+ * cfg80211 assumes -110 to -40 dBm and clamps to that range
+ * for qual.qual, so tell userspace this is what we give it
+ * but take into account that we have to start from 0.
+ */
+ range->max_qual.qual = 70;
+ range->avg_qual.qual = 35;
+ } else {
+ /*
+ * cfg80211 just uses the level value for qual too, and it
+ * requires the level value to be 0 .. 100.
+ */
+ range->max_qual.qual = 100;
+ range->avg_qual.qual = 50;
+ }
/* not always true but better than nothing */
range->avg_qual.level = range->max_qual.level / 2;
range->avg_qual.noise = range->max_qual.noise / 2;
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