mac80211: add debugfs for driver-buffered TID bitmap

Add a per-station debugfs file indicating the TIDs (as
a bitmap) that the driver has data buffered on.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 44e201d60a13991f0144954ac1dd1ebd00cb4672..19c54a44ed4793823713b717a86111d4dda0d57d 100644 (file)
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -455,6 +455,15 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
        DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
        DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
 
+       if (sizeof(sta->driver_buffered_tids) == sizeof(u32))
+               debugfs_create_x32("driver_buffered_tids", 0400,
+                                  sta->debugfs.dir,
+                                  (u32 *)&sta->driver_buffered_tids);
+       else
+               debugfs_create_x64("driver_buffered_tids", 0400,
+                                  sta->debugfs.dir,
+                                  (u64 *)&sta->driver_buffered_tids);
+
        drv_sta_add_debugfs(local, sdata, &sta->sta, sta->debugfs.dir);
 }