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>

1 files changed, 9 insertions, 0 deletions

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 44e201d60a13..19c54a44ed47 100644
--- 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);
 }