Subject: [PATCH 8/8] d80211/bcm43xx: Modify ieee80211_ioctl.c for wireless statistics.

From: Larry Finger <[email-masked]>
Date: Tue, 08 Aug 2006 19:00:08 -0500

Part 8 of 8 to add wireless statistics to the bcm43xx-d80211 system.
This patch adds the appropriate range parameters and routine
ieee80211_get_wireless_stats to ieee80211_ioctl.c.

The patch is for the August 8 version of Linville's wireless-dev tree.

Signed-Off-By: Larry Finger <[email-masked]>

diff --git a/net/d80211/ieee80211_ioctl.c b/net/d80211/ieee80211_ioctl.c
index dd52555..3a1b97f 100644
--- a/net/d80211/ieee80211_ioctl.c
+++ b/net/d80211/ieee80211_ioctl.c
@@ -1525,6 +1525,16 @@ static int ieee80211_ioctl_giwrange(stru
  	range->min_frag = 256;
  	range->max_frag = 2346;

+	range->max_qual.qual = 100;
+	range->max_qual.level = 152;  /* set floor at -104 dBm (152 - 256) */
+	range->max_qual.noise = 152;
+	range->max_qual.updated = IW_QUAL_ALL_UPDATED;
+
+	range->avg_qual.qual = 50;
+	range->avg_qual.level = 0;
+	range->avg_qual.noise = 0;
+	range->avg_qual.updated = IW_QUAL_ALL_UPDATED;
+
  	return 0;
  }

@@ -2963,6 +2973,39 @@ static int ieee80211_ioctl_giwauth(struc
  	return ret;
  }

+/* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
+static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *net_dev)
+{
+	struct ieee80211_local *local = net_dev->ieee80211_ptr;
+	struct iw_statistics * wstats = &local->wstats;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(net_dev);
+	struct sta_info *sta;
+	static int tmp_level = 0;
+	static int tmp_qual = 0;
+
+	sta = sta_info_get(local, sdata->u.wds.remote_addr);
+	if (!sta) {
+		wstats->discard.fragment = 0;
+		wstats->discard.misc = 0;
+		wstats->qual.qual = 0;
+		wstats->qual.level = 0;
+		wstats->qual.noise = 0;
+		wstats->qual.updated |= IW_QUAL_ALL_UPDATED;
+	} else {
+		if (!tmp_level) {       /* get initial values */
+			tmp_level = sta->last_signal;
+			tmp_qual = sta->last_rssi;
+		} else {                        /* smooth results */
+			tmp_level = (15 * tmp_level + sta->last_signal)/16;
+			tmp_qual = (15 * tmp_qual + sta->last_rssi)/16;
+		}
+		wstats->qual.level = tmp_level;
+		wstats->qual.qual = 100*tmp_qual/sta->max_rssi;
+		wstats->qual.noise = sta->last_noise;
+		wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
+	}
+	return wstats;
+}

  static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
  					struct iw_request_info *info,
@@ -3128,4 +3171,5 @@ const struct iw_handler_def ieee80211_iw
  	.standard	= (iw_handler *) ieee80211_handler,
  	.private	= (iw_handler *) ieee80211_private_handler,
  	.private_args	= (struct iw_priv_args *) ieee80211_ioctl_priv,
+	.get_wireless_stats = ieee80211_get_wireless_stats,
  };