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authorBruno Randolf <br1@einfach.org>2010-12-02 19:12:43 +0900
committerJohn W. Linville <linville@tuxdriver.com>2010-12-07 16:09:12 -0500
commit541a45a142df281c974d74eac2066138fc107b23 (patch)
treeb96f4808c3f17f2f560db9569ca2b08dba9eab67 /net/mac80211/cfg.c
parent22de94de7de78b8de2fb1f2df5aa85b5556cfcfd (diff)
downloadblackbird-op-linux-541a45a142df281c974d74eac2066138fc107b23.tar.gz
blackbird-op-linux-541a45a142df281c974d74eac2066138fc107b23.zip
nl80211/mac80211: Report signal average
Extend nl80211 to report an exponential weighted moving average (EWMA) of the signal value. Since the signal value usually fluctuates between different packets, an average can be more useful than the value of the last packet. This uses the recently added generic EWMA library function. -- v2: fix ABI breakage and change factor to be a power of 2. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/cfg.c')
-rw-r--r--net/mac80211/cfg.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 68329d713c02..af9620406321 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -342,8 +342,9 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
(sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
- sinfo->filled |= STATION_INFO_SIGNAL;
+ sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
sinfo->signal = (s8)sta->last_signal;
+ sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
}
sinfo->txrate.flags = 0;
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