ath9k: fix rate control tx status handling for A-MPDU

Currently the rate control tx status update gets called for every
subframe of an A-MPDU, and ath9k marks the frame with the relevant
status update with an internal flag. This not suitable for rate control
algorithms using the standard mac80211 rate control API, so fix this by
using IEEE80211_TX_STAT_AMPDU for marking the correct frames that
should be processed.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 8 insertions, 5 deletions

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index 0e79e58cf4c9..3c4b5d2d9e16 100644
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -1226,8 +1226,12 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
                 long_retry = rate->count - 1;
         }
 
-        if (!priv_sta || !ieee80211_is_data(fc) ||
-            !(tx_info->pad[0] & ATH_TX_INFO_UPDATE_RC))
+        if (!priv_sta || !ieee80211_is_data(fc))
+                return;
+
+        /* This packet was aggregated but doesn't carry status info */
+        if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) &&
+            !(tx_info->flags & IEEE80211_TX_STAT_AMPDU))
                 return;
 
         if (tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED)
diff --git a/drivers/net/wireless/ath/ath9k/rc.h b/drivers/net/wireless/ath/ath9k/rc.h
index 4f6d6fd442f4..f4818e4fa4b0 100644
--- a/drivers/net/wireless/ath/ath9k/rc.h
+++ b/drivers/net/wireless/ath/ath9k/rc.h
@@ -172,7 +172,6 @@ struct ath_rate_priv {
 
 #define ATH_TX_INFO_FRAME_TYPE_INTERNAL (1 << 0)
 #define ATH_TX_INFO_FRAME_TYPE_PAUSE    (1 << 1)
-#define ATH_TX_INFO_UPDATE_RC           (1 << 2)
 #define ATH_TX_INFO_XRETRY              (1 << 3)
 #define ATH_TX_INFO_UNDERRUN            (1 << 4)
 
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index b2c8207f7bc1..8359362fc51c 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1947,10 +1947,10 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds,
         tx_rateindex = ds->ds_txstat.ts_rateindex;
         WARN_ON(tx_rateindex >= hw->max_rates);
 
-        if (update_rc)
-                tx_info->pad[0] |= ATH_TX_INFO_UPDATE_RC;
         if (ds->ds_txstat.ts_status & ATH9K_TXERR_FILT)
                 tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
+        if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && update_rc)
+                tx_info->flags |= IEEE80211_TX_STAT_AMPDU;
 
         if ((ds->ds_txstat.ts_status & ATH9K_TXERR_FILT) == 0 &&
             (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0 && update_rc) {