ath9k: use the number of pending aggregates instead of the queue depth to determine...

SVN-Revision: 24627

diff --git a/package/mac80211/patches/540-ath9k_aggr_depth_fix.patch b/package/mac80211/patches/540-ath9k_aggr_depth_fix.patch
new file mode 100644 (file)
index 0000000..ad0f2e1
--- /dev/null
+++ b/package/mac80211/patches/540-ath9k_aggr_depth_fix.patch
@@ -0,0 +1,89 @@
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -838,7 +838,7 @@ static void ath_tx_sched_aggr(struct ath
+               ath_tx_txqaddbuf(sc, txq, &bf_q);
+               TX_STAT_INC(txq->axq_qnum, a_aggr);
+ 
+-      } while (txq->axq_depth < ATH_AGGR_MIN_QDEPTH &&
++      } while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH &&
+                status != ATH_AGGR_BAW_CLOSED);
+ }
+ 
+@@ -999,6 +999,7 @@ struct ath_txq *ath_txq_setup(struct ath
+               INIT_LIST_HEAD(&txq->axq_acq);
+               spin_lock_init(&txq->axq_lock);
+               txq->axq_depth = 0;
++              txq->axq_ampdu_depth = 0;
+               txq->axq_tx_inprogress = false;
+               sc->tx.txqsetup |= 1<<qnum;
+ 
+@@ -1068,6 +1069,12 @@ int ath_cabq_update(struct ath_softc *sc
+       return 0;
+ }
+ 
++static bool bf_is_ampdu_not_probing(struct ath_buf *bf)
++{
++    struct ieee80211_tx_info *info = IEEE80211_SKB_CB(bf->bf_mpdu);
++    return bf_isampdu(bf) && !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
++}
++
+ /*
+  * Drain a given TX queue (could be Beacon or Data)
+  *
+@@ -1126,7 +1133,8 @@ void ath_draintxq(struct ath_softc *sc, 
+               }
+ 
+               txq->axq_depth--;
+-
++              if (bf_is_ampdu_not_probing(bf))
++                      txq->axq_ampdu_depth--;
+               spin_unlock_bh(&txq->axq_lock);
+ 
+               if (bf_isampdu(bf))
+@@ -1316,6 +1324,8 @@ static void ath_tx_txqaddbuf(struct ath_
+               ath9k_hw_txstart(ah, txq->axq_qnum);
+       }
+       txq->axq_depth++;
++      if (bf_is_ampdu_not_probing(bf))
++              txq->axq_ampdu_depth++;
+ }
+ 
+ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
+@@ -1336,7 +1346,7 @@ static void ath_tx_send_ampdu(struct ath
+        */
+       if (!list_empty(&tid->buf_q) || tid->paused ||
+           !BAW_WITHIN(tid->seq_start, tid->baw_size, fi->seqno) ||
+-          txctl->txq->axq_depth >= ATH_AGGR_MIN_QDEPTH) {
++          txctl->txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) {
+               /*
+                * Add this frame to software queue for scheduling later
+                * for aggregation.
+@@ -2040,6 +2050,9 @@ static void ath_tx_processq(struct ath_s
+               txq->axq_tx_inprogress = false;
+               if (bf_held)
+                       list_del(&bf_held->list);
++
++              if (bf_is_ampdu_not_probing(bf))
++                      txq->axq_ampdu_depth--;
+               spin_unlock_bh(&txq->axq_lock);
+ 
+               if (bf_held)
+@@ -2168,6 +2181,8 @@ void ath_tx_edma_tasklet(struct ath_soft
+               INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
+               txq->axq_depth--;
+               txq->axq_tx_inprogress = false;
++              if (bf_is_ampdu_not_probing(bf))
++                      txq->axq_ampdu_depth--;
+               spin_unlock_bh(&txq->axq_lock);
+ 
+               txok = !(txs.ts_status & ATH9K_TXERR_MASK);
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -187,6 +187,7 @@ struct ath_txq {
+       struct list_head axq_q;
+       spinlock_t axq_lock;
+       u32 axq_depth;
++      u32 axq_ampdu_depth;
+       bool stopped;
+       bool axq_tx_inprogress;
+       struct list_head axq_acq;