ext3: Fix duplicate entries returned from getdents() system call

[linux-2.6-omap-h63xx.git] / net / mac80211 / debugfs_sta.c

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 79a062782d52e2da757532901a29017e9f420d4e..189d0bafa91ae0f274c2813f912012679f53903d 100644 (file)
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -50,7 +50,7 @@ static const struct file_operations sta_ ##name## _ops = {            \
                STA_READ_##format(name, field)                          \
                STA_OPS(name)
 
-STA_FILE(aid, aid, D);
+STA_FILE(aid, sta.aid, D);
 STA_FILE(dev, sdata->dev->name, S);
 STA_FILE(rx_packets, rx_packets, LU);
 STA_FILE(tx_packets, tx_packets, LU);
@@ -173,10 +173,9 @@ static ssize_t sta_agg_status_write(struct file *file,
                const char __user *user_buf, size_t count, loff_t *ppos)
 {
        struct sta_info *sta = file->private_data;
-       struct net_device *dev = sta->sdata->dev;
-       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_local *local = sta->sdata->local;
        struct ieee80211_hw *hw = &local->hw;
-       u8 *da = sta->addr;
+       u8 *da = sta->sta.addr;
        static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,
                                        0, 0, 0, 0, 0, 0, 0, 0};
        static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,
@@ -201,7 +200,7 @@ static ssize_t sta_agg_status_write(struct file *file,
                tid_num = tid_num - 100;
                if (tid_static_rx[tid_num] == 1) {
                        strcpy(state, "off ");
-                       ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,
+                       ieee80211_sta_stop_rx_ba_session(sta->sdata, da, tid_num, 0,
                                        WLAN_REASON_QSTA_REQUIRE_SETUP);
                        sta->ampdu_mlme.tid_state_rx[tid_num] |=
                                        HT_AGG_STATE_DEBUGFS_CTL;
@@ -250,11 +249,22 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
        DECLARE_MAC_BUF(mbuf);
        u8 *mac;
 
+       sta->debugfs.add_has_run = true;
+
        if (!stations_dir)
                return;
 
-       mac = print_mac(mbuf, sta->addr);
-
+       mac = print_mac(mbuf, sta->sta.addr);
+
+       /*
+        * This might fail due to a race condition:
+        * When mac80211 unlinks a station, the debugfs entries
+        * remain, but it is already possible to link a new
+        * station with the same address which triggers adding
+        * it to debugfs; therefore, if the old station isn't
+        * destroyed quickly enough the old station's debugfs
+        * dir might still be around.
+        */
        sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
        if (!sta->debugfs.dir)
                return;