[PATCH] ath10k: Make ath10k report discarded packets to mac80211

[Ignacio Núñez Hernanz <nacho.nunez@xxxxxxxxxx>]

From 2caef0e851a23cc9e979a3f36a2ae0d964cfeba7 Mon Sep 17 00:00:00 2001
From: Ignacio Nunez Hernanz <nacho.nunez@xxxxxxxxxx>
Date: Mon, 24 Jul 2017 11:52:48 +0200
Subject: [PATCH] ath10k: Make ath10k report discarded packets to mac80211

Whenever ath10k firmware discards a packet (HTT_TX_COMPL_STATE_DISCARD
flag), the skb is freed and mac80211 does not get feedback through
ieee80211_tx_status().

Instead, make sure that the IEEE80211_TX_STAT_ACK flag is disabled and
let the packet go through, like ath9k does.

Signed-off-by: Ignacio Nunez Hernanz <nacho.nunez@xxxxxxxxxx>
---
 drivers/net/wireless/ath/ath10k/txrx.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/txrx.c 
b/drivers/net/wireless/ath/ath10k/txrx.c
index d4986f626c35..37537530de76 100644
--- a/drivers/net/wireless/ath/ath10k/txrx.c
+++ b/drivers/net/wireless/ath/ath10k/txrx.c
@@ -102,11 +102,6 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
     memset(&info->status, 0, sizeof(info->status));
     trace_ath10k_txrx_tx_unref(ar, tx_done->msdu_id);

-    if (tx_done->status == HTT_TX_COMPL_STATE_DISCARD) {
-        ieee80211_free_txskb(htt->ar->hw, msdu);
-        return 0;
-    }
-
     if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
         info->flags |= IEEE80211_TX_STAT_ACK;

@@ -117,6 +112,13 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
         (info->flags & IEEE80211_TX_CTL_NO_ACK))
         info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;

+    if (tx_done->status == HTT_TX_COMPL_STATE_DISCARD) {
+          if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+            info->flags &= ~IEEE80211_TX_STAT_NOACK_TRANSMITTED;
+          else
+            info->flags &= ~IEEE80211_TX_STAT_ACK;
+    }
+
     ieee80211_tx_status(htt->ar->hw, msdu);
     /* we do not own the msdu anymore */

--
2.13.1