mac80211: implement wifi TX status

Implement the socket wifi TX status error
queue reflection in mac80211.

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

1 files changed, 38 insertions, 0 deletions

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 94702f103cfc..83b800d17a9a 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -548,6 +548,24 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                 }
         }
 
+        if (unlikely(info->ack_frame_id)) {
+                struct sk_buff *ack_skb;
+                unsigned long flags;
+
+                spin_lock_irqsave(&local->ack_status_lock, flags);
+                ack_skb = idr_find(&local->ack_status_frames,
+                                   info->ack_frame_id);
+                if (ack_skb)
+                        idr_remove(&local->ack_status_frames,
+                                   info->ack_frame_id);
+                spin_unlock_irqrestore(&local->ack_status_lock, flags);
+
+                /* consumes ack_skb */
+                if (ack_skb)
+                        skb_complete_wifi_ack(ack_skb,
+                                info->flags & IEEE80211_TX_STAT_ACK);
+        }
+
         /* this was a transmitted frame, but now we want to reuse it */
         skb_orphan(skb);
 
@@ -621,6 +639,26 @@ EXPORT_SYMBOL(ieee80211_report_low_ack);
 
 void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb)
 {
+        struct ieee80211_local *local = hw_to_local(hw);
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+        if (unlikely(info->ack_frame_id)) {
+                struct sk_buff *ack_skb;
+                unsigned long flags;
+
+                spin_lock_irqsave(&local->ack_status_lock, flags);
+                ack_skb = idr_find(&local->ack_status_frames,
+                                   info->ack_frame_id);
+                if (ack_skb)
+                        idr_remove(&local->ack_status_frames,
+                                   info->ack_frame_id);
+                spin_unlock_irqrestore(&local->ack_status_lock, flags);
+
+                /* consumes ack_skb */
+                if (ack_skb)
+                        dev_kfree_skb_any(ack_skb);
+        }
+
         dev_kfree_skb_any(skb);
 }
 EXPORT_SYMBOL(ieee80211_free_txskb);