mirror of https://gitee.com/openkylin/linux.git
ath9k: avoid sending a-mpdu packets to sleeping stations
If the driver gets a tx status report for an A-MPDU sent to a station that just went to sleep, that leaves a race condition where this tx status can trigger another A-MPDU transmission. To fix this, check if the station is sleeping before queueing the tid. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -551,7 +551,8 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
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if (clear_filter)
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tid->ac->clear_ps_filter = true;
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list_splice(&bf_pending, &tid->buf_q);
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ath_tx_queue_tid(txq, tid);
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if (!an->sleeping)
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ath_tx_queue_tid(txq, tid);
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spin_unlock_bh(&txq->axq_lock);
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}
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@ -1413,7 +1414,8 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
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*/
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TX_STAT_INC(txctl->txq->axq_qnum, a_queued_sw);
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list_add_tail(&bf->list, &tid->buf_q);
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ath_tx_queue_tid(txctl->txq, tid);
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if (!txctl->an || !txctl->an->sleeping)
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ath_tx_queue_tid(txctl->txq, tid);
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return;
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}
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