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Commit c41d92dc authored by Vasanthakumar Thiagarajan's avatar Vasanthakumar Thiagarajan Committed by John W. Linville
Browse files

ath9k: Handle tx desc shortage more appropriately 



Update tx BA window and complete the frame as failed
one if we can't clone the holding descriptor due to
unavailability of descriptors.

Signed-off-by: default avatarVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 8e7f98b5

drivers/net/wireless/ath/ath9k/xmit.c

+17 −1
Original line number Diff line number Diff line
@@ -382,8 +382,24 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, 
				struct ath_buf *tbf;



				tbf = ath_clone_txbuf(sc, bf_last);

				if (!tbf)

				/*

				 * Update tx baw and complete the frame with

				 * failed status if we run out of tx buf

				 */

				if (!tbf) {

					spin_lock_bh(&txq->axq_lock);

					ath_tx_update_baw(sc, tid,

							  bf->bf_seqno);

					spin_unlock_bh(&txq->axq_lock);



					bf->bf_state.bf_type |= BUF_XRETRY;

					ath_tx_rc_status(bf, ds, nbad,

							 0, false);

					ath_tx_complete_buf(sc, bf, &bf_head,

							    0, 0);

					break;

				}



				ath9k_hw_cleartxdesc(sc->sc_ah, tbf->bf_desc);

				list_add_tail(&tbf->list, &bf_head);

			} else {