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ath9k: use the number of pending aggregates instead of the queue depth to determine when it is time to form the next A-MPDU 

SVN-Revision: 24627
lede-17.01
Felix Fietkau 2010-12-16 23:55:12 +00:00
parent 9daa5485ba
commit a63754b5d5
1 changed files with 89 additions and 0 deletions
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89
package/mac80211/patches/540-ath9k_aggr_depth_fix.patch Normal file
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@ -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;