[PATCH] ieee80211: Add spectrum management information

Add spectrum management information and use stat.signal to provide
signal level information.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 29 insertions, 2 deletions

diff --git a/net/ieee80211/ieee80211_wx.c b/net/ieee80211/ieee80211_wx.c
index f87c6b89f845..9496918e6106 100644
--- a/net/ieee80211/ieee80211_wx.c
+++ b/net/ieee80211/ieee80211_wx.c
@@ -149,9 +149,7 @@ static char *ipw2100_translate_scan(struct ieee80211_device *ieee,
                 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
                     IW_QUAL_LEVEL_INVALID;
                 iwe.u.qual.qual = 0;
-                iwe.u.qual.level = 0;
         } else {
-                iwe.u.qual.level = network->stats.rssi;
                 if (ieee->perfect_rssi == ieee->worst_rssi)
                         iwe.u.qual.qual = 100;
                 else
@@ -179,6 +177,13 @@ static char *ipw2100_translate_scan(struct ieee80211_device *ieee,
                 iwe.u.qual.noise = network->stats.noise;
         }
 
+        if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) {
+                iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
+                iwe.u.qual.level = 0;
+        } else {
+                iwe.u.qual.level = network->stats.signal;
+        }
+
         start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);
 
         iwe.cmd = IWEVCUSTOM;
@@ -229,6 +234,28 @@ static char *ipw2100_translate_scan(struct ieee80211_device *ieee,
         if (iwe.u.data.length)
                 start = iwe_stream_add_point(start, stop, &iwe, custom);
 
+        /* Add spectrum management information */
+        iwe.cmd = -1;
+        p = custom;
+        p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");
+
+        if (ieee80211_get_channel_flags(ieee, network->channel) &
+            IEEE80211_CH_INVALID) {
+                iwe.cmd = IWEVCUSTOM;
+                p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
+        }
+
+        if (ieee80211_get_channel_flags(ieee, network->channel) &
+            IEEE80211_CH_RADAR_DETECT) {
+                iwe.cmd = IWEVCUSTOM;
+                p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
+        }
+
+        if (iwe.cmd == IWEVCUSTOM) {
+                iwe.u.data.length = p - custom;
+                start = iwe_stream_add_point(start, stop, &iwe, custom);
+        }
+
         return start;
 }