From 3b53fde8ac40c4321389def14d7f4a9e14092fd3 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes@sipsolutions.net>
Date: Mon, 16 Nov 2009 12:00:37 +0100
Subject: mac80211: let sta_info_get_by_idx get sta by sdata

Instead of filtering by device, directly look up by sdata.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 7f18c8f..7d59181 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -398,13 +398,13 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 				 int idx, u8 *mac, struct station_info *sinfo)
 {
-	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct sta_info *sta;
 	int ret = -ENOENT;
 
 	rcu_read_lock();
 
-	sta = sta_info_get_by_idx(local, idx, dev);
+	sta = sta_info_get_by_idx(sdata, idx);
 	if (sta) {
 		ret = 0;
 		memcpy(mac, sta->sta.addr, ETH_ALEN);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 396a948..aa017a5 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -116,14 +116,15 @@ struct sta_info *sta_info_get(struct ieee80211_local *local, const u8 *addr)
 	return sta;
 }
 
-struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
-				     struct net_device *dev)
+struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
+				     int idx)
 {
+	struct ieee80211_local *local = sdata->local;
 	struct sta_info *sta;
 	int i = 0;
 
 	list_for_each_entry_rcu(sta, &local->sta_list, list) {
-		if (dev && dev != sta->sdata->dev)
+		if (sdata != sta->sdata)
 			continue;
 		if (i < idx) {
 			++i;
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 4673454..4c84c22 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -409,8 +409,8 @@ struct sta_info *sta_info_get(struct ieee80211_local *local, const u8 *addr);
 /*
  * Get STA info by index, BROKEN!
  */
-struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
-				      struct net_device *dev);
+struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
+				     int idx);
 /*
  * Create a new STA info, caller owns returned structure
  * until sta_info_insert().
-- 
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