1 files changed, 32 insertions, 51 deletions

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 86b54ddd01c..745d91995d7 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -251,6 +251,7 @@ static struct ath_buf* ath_clone_txbuf(struct ath_softc *sc, struct ath_buf *bf)
 
         ATH_TXBUF_RESET(tbf);
 
+        tbf->aphy = bf->aphy;
         tbf->bf_mpdu = bf->bf_mpdu;
         tbf->bf_buf_addr = bf->bf_buf_addr;
         *(tbf->bf_desc) = *(bf->bf_desc);
@@ -270,7 +271,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
         struct ieee80211_hw *hw;
         struct ieee80211_hdr *hdr;
         struct ieee80211_tx_info *tx_info;
-        struct ath_tx_info_priv *tx_info_priv;
         struct ath_atx_tid *tid = NULL;
         struct ath_buf *bf_next, *bf_last = bf->bf_lastbf;
         struct ath_desc *ds = bf_last->bf_desc;
@@ -284,8 +284,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
         hdr = (struct ieee80211_hdr *)skb->data;
 
         tx_info = IEEE80211_SKB_CB(skb);
-        tx_info_priv = (struct ath_tx_info_priv *) tx_info->rate_driver_data[0];
-        hw = tx_info_priv->aphy->hw;
+        hw = bf->aphy->hw;
 
         rcu_read_lock();
 
@@ -464,7 +463,6 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
         struct sk_buff *skb;
         struct ieee80211_tx_info *tx_info;
         struct ieee80211_tx_rate *rates;
-        struct ath_tx_info_priv *tx_info_priv;
         u32 max_4ms_framelen, frmlen;
         u16 aggr_limit, legacy = 0;
         int i;
@@ -472,7 +470,6 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
         skb = bf->bf_mpdu;
         tx_info = IEEE80211_SKB_CB(skb);
         rates = tx_info->control.rates;
-        tx_info_priv = (struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
 
         /*
          * Find the lowest frame length among the rate series that will have a
@@ -702,7 +699,6 @@ static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
                 /* anchor last desc of aggregate */
                 ath9k_hw_set11n_aggr_last(sc->sc_ah, bf->bf_lastbf->bf_desc);
 
-                txq->axq_aggr_depth++;
                 ath_tx_txqaddbuf(sc, txq, &bf_q);
                 TX_STAT_INC(txq->axq_qnum, a_aggr);
 
@@ -878,8 +874,6 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
                 INIT_LIST_HEAD(&txq->axq_acq);
                 spin_lock_init(&txq->axq_lock);
                 txq->axq_depth = 0;
-                txq->axq_aggr_depth = 0;
-                txq->axq_linkbuf = NULL;
                 txq->axq_tx_inprogress = false;
                 sc->tx.txqsetup |= 1<<qnum;
         }
@@ -1014,7 +1008,6 @@ void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
 
                 if (list_empty(&txq->axq_q)) {
                         txq->axq_link = NULL;
-                        txq->axq_linkbuf = NULL;
                         spin_unlock_bh(&txq->axq_lock);
                         break;
                 }
@@ -1199,7 +1192,6 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
 
         list_splice_tail_init(head, &txq->axq_q);
         txq->axq_depth++;
-        txq->axq_linkbuf = list_entry(txq->axq_q.prev, struct ath_buf, list);
 
         ath_print(common, ATH_DBG_QUEUE,
                   "qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
@@ -1560,21 +1552,26 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf,
         struct ath_softc *sc = aphy->sc;
         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-        struct ath_tx_info_priv *tx_info_priv;
         int hdrlen;
         __le16 fc;
 
-        tx_info_priv = kzalloc(sizeof(*tx_info_priv), GFP_ATOMIC);
-        if (unlikely(!tx_info_priv))
-                return -ENOMEM;
-        tx_info->rate_driver_data[0] = tx_info_priv;
-        tx_info_priv->aphy = aphy;
-        tx_info_priv->frame_type = txctl->frame_type;
+        tx_info->pad[0] = 0;
+        switch (txctl->frame_type) {
+        case ATH9K_NOT_INTERNAL:
+                break;
+        case ATH9K_INT_PAUSE:
+                tx_info->pad[0] |= ATH_TX_INFO_FRAME_TYPE_PAUSE;
+                /* fall through */
+        case ATH9K_INT_UNPAUSE:
+                tx_info->pad[0] |= ATH_TX_INFO_FRAME_TYPE_INTERNAL;
+                break;
+        }
         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
         fc = hdr->frame_control;
 
         ATH_TXBUF_RESET(bf);
 
+        bf->aphy = aphy;
         bf->bf_frmlen = skb->len + FCS_LEN - (hdrlen & 3);
 
         if (conf_is_ht(&hw->conf) && !is_pae(skb))
@@ -1599,8 +1596,6 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf,
                                            skb->len, DMA_TO_DEVICE);
         if (unlikely(dma_mapping_error(sc->dev, bf->bf_dmacontext))) {
                 bf->bf_mpdu = NULL;
-                kfree(tx_info_priv);
-                tx_info->rate_driver_data[0] = NULL;
                 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
                           "dma_mapping_error() on TX\n");
                 return -ENOMEM;
@@ -1781,27 +1776,17 @@ exit:
 /*****************/
 
 static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
-                            int tx_flags)
+                            struct ath_wiphy *aphy, int tx_flags)
 {
         struct ieee80211_hw *hw = sc->hw;
         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-        struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
         int hdrlen, padsize;
-        int frame_type = ATH9K_NOT_INTERNAL;
 
         ath_print(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb);
 
-        if (tx_info_priv) {
-                hw = tx_info_priv->aphy->hw;
-                frame_type = tx_info_priv->frame_type;
-        }
-
-        if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
-            tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
-                kfree(tx_info_priv);
-                tx_info->rate_driver_data[0] = NULL;
-        }
+        if (aphy)
+                hw = aphy->hw;
 
         if (tx_flags & ATH_TX_BAR)
                 tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
@@ -1833,10 +1818,10 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
                                         SC_OP_WAIT_FOR_TX_ACK));
         }
 
-        if (frame_type == ATH9K_NOT_INTERNAL)
-                ieee80211_tx_status(hw, skb);
-        else
+        if (unlikely(tx_info->pad[0] & ATH_TX_INFO_FRAME_TYPE_INTERNAL))
                 ath9k_tx_status(hw, skb);
+        else
+                ieee80211_tx_status(hw, skb);
 }
 
 static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
@@ -1859,7 +1844,7 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
         }
 
         dma_unmap_single(sc->dev, bf->bf_dmacontext, skb->len, DMA_TO_DEVICE);
-        ath_tx_complete(sc, skb, tx_flags);
+        ath_tx_complete(sc, skb, bf->aphy, tx_flags);
         ath_debug_stat_tx(sc, txq, bf);
 
         /*
@@ -1907,8 +1892,7 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds,
         struct sk_buff *skb = bf->bf_mpdu;
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-        struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
-        struct ieee80211_hw *hw = tx_info_priv->aphy->hw;
+        struct ieee80211_hw *hw = bf->aphy->hw;
         u8 i, tx_rateindex;
 
         if (txok)
@@ -1917,17 +1901,22 @@ 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);
 
-        tx_info_priv->update_rc = update_rc;
+        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 ((ds->ds_txstat.ts_status & ATH9K_TXERR_FILT) == 0 &&
             (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0 && update_rc) {
                 if (ieee80211_is_data(hdr->frame_control)) {
-                        memcpy(&tx_info_priv->tx, &ds->ds_txstat,
-                               sizeof(tx_info_priv->tx));
-                        tx_info_priv->n_frames = bf->bf_nframes;
-                        tx_info_priv->n_bad_frames = nbad;
+                        if (ds->ds_txstat.ts_flags &
+                            (ATH9K_TX_DATA_UNDERRUN | ATH9K_TX_DELIM_UNDERRUN))
+                                tx_info->pad[0] |= ATH_TX_INFO_UNDERRUN;
+                        if ((ds->ds_txstat.ts_status & ATH9K_TXERR_XRETRY) ||
+                            (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO))
+                                tx_info->pad[0] |= ATH_TX_INFO_XRETRY;
+                        tx_info->status.ampdu_len = bf->bf_nframes;
+                        tx_info->status.ampdu_ack_len = bf->bf_nframes - nbad;
                 }
         }
 
@@ -1971,7 +1960,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
                 spin_lock_bh(&txq->axq_lock);
                 if (list_empty(&txq->axq_q)) {
                         txq->axq_link = NULL;
-                        txq->axq_linkbuf = NULL;
                         spin_unlock_bh(&txq->axq_lock);
                         break;
                 }
@@ -2005,10 +1993,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
                         spin_unlock_bh(&txq->axq_lock);
                         break;
                 }
-                if (bf->bf_desc == txq->axq_lastdsWithCTS)
-                        txq->axq_lastdsWithCTS = NULL;
-                if (ds == txq->axq_gatingds)
-                        txq->axq_gatingds = NULL;
 
                 /*
                  * Remove ath_buf's of the same transmit unit from txq,
@@ -2022,9 +2006,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
                                 &txq->axq_q, lastbf->list.prev);
 
                 txq->axq_depth--;
-                if (bf_isaggr(bf))
-                        txq->axq_aggr_depth--;
-
                 txok = (ds->ds_txstat.ts_status == 0);
                 txq->axq_tx_inprogress = false;
                 spin_unlock_bh(&txq->axq_lock);