2008-08-04 15:16:41 +08:00
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/*
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2011-05-17 16:06:18 +08:00
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* Copyright (c) 2008-2011 Atheros Communications Inc.
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2008-08-04 15:16:41 +08:00
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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2011-06-16 19:01:34 +08:00
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#include <linux/dma-mapping.h>
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2009-02-09 15:56:54 +08:00
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#include "ath9k.h"
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2010-04-16 05:39:28 +08:00
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#include "ar9003_mac.h"
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2008-08-04 15:16:41 +08:00
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#define BITS_PER_BYTE 8
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#define OFDM_PLCP_BITS 22
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#define HT_RC_2_STREAMS(_rc) ((((_rc) & 0x78) >> 3) + 1)
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#define L_STF 8
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#define L_LTF 8
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#define L_SIG 4
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#define HT_SIG 8
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#define HT_STF 4
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#define HT_LTF(_ns) (4 * (_ns))
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#define SYMBOL_TIME(_ns) ((_ns) << 2) /* ns * 4 us */
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#define SYMBOL_TIME_HALFGI(_ns) (((_ns) * 18 + 4) / 5) /* ns * 3.6 us */
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#define NUM_SYMBOLS_PER_USEC(_usec) (_usec >> 2)
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#define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*5)-4)/18)
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2010-04-20 01:57:33 +08:00
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static u16 bits_per_symbol[][2] = {
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2008-08-04 15:16:41 +08:00
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/* 20MHz 40MHz */
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{ 26, 54 }, /* 0: BPSK */
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{ 52, 108 }, /* 1: QPSK 1/2 */
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{ 78, 162 }, /* 2: QPSK 3/4 */
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{ 104, 216 }, /* 3: 16-QAM 1/2 */
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{ 156, 324 }, /* 4: 16-QAM 3/4 */
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{ 208, 432 }, /* 5: 64-QAM 2/3 */
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{ 234, 486 }, /* 6: 64-QAM 3/4 */
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{ 260, 540 }, /* 7: 64-QAM 5/6 */
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};
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#define IS_HT_RATE(_rate) ((_rate) & 0x80)
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2010-11-11 10:18:37 +08:00
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static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
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2011-08-28 06:32:25 +08:00
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struct ath_atx_tid *tid, struct sk_buff *skb);
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static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
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int tx_flags, struct ath_txq *txq);
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2009-01-17 00:08:42 +08:00
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static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
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2010-03-30 11:07:11 +08:00
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struct ath_txq *txq, struct list_head *bf_q,
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struct ath_tx_status *ts, int txok, int sendbar);
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2008-10-29 12:45:16 +08:00
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static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
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2011-05-19 18:20:25 +08:00
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struct list_head *head, bool internal);
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2011-01-25 02:23:17 +08:00
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static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
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struct ath_tx_status *ts, int nframes, int nbad,
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2011-09-15 03:24:26 +08:00
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int txok);
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2010-09-20 19:45:38 +08:00
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static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
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int seqno);
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2011-08-28 06:32:25 +08:00
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static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
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struct ath_txq *txq,
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struct ath_atx_tid *tid,
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struct sk_buff *skb);
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2008-11-18 11:39:30 +08:00
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2009-11-24 05:21:01 +08:00
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enum {
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2010-04-20 01:57:32 +08:00
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MCS_HT20,
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MCS_HT20_SGI,
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2009-11-24 05:21:01 +08:00
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MCS_HT40,
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MCS_HT40_SGI,
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};
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2010-04-20 01:57:32 +08:00
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static int ath_max_4ms_framelen[4][32] = {
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[MCS_HT20] = {
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3212, 6432, 9648, 12864, 19300, 25736, 28952, 32172,
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6424, 12852, 19280, 25708, 38568, 51424, 57852, 64280,
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9628, 19260, 28896, 38528, 57792, 65532, 65532, 65532,
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12828, 25656, 38488, 51320, 65532, 65532, 65532, 65532,
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},
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[MCS_HT20_SGI] = {
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3572, 7144, 10720, 14296, 21444, 28596, 32172, 35744,
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7140, 14284, 21428, 28568, 42856, 57144, 64288, 65532,
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10700, 21408, 32112, 42816, 64228, 65532, 65532, 65532,
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14256, 28516, 42780, 57040, 65532, 65532, 65532, 65532,
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2009-11-24 05:21:01 +08:00
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},
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[MCS_HT40] = {
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2010-04-20 01:57:32 +08:00
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6680, 13360, 20044, 26724, 40092, 53456, 60140, 65532,
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13348, 26700, 40052, 53400, 65532, 65532, 65532, 65532,
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20004, 40008, 60016, 65532, 65532, 65532, 65532, 65532,
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26644, 53292, 65532, 65532, 65532, 65532, 65532, 65532,
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2009-11-24 05:21:01 +08:00
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},
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[MCS_HT40_SGI] = {
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2010-04-20 01:57:32 +08:00
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7420, 14844, 22272, 29696, 44544, 59396, 65532, 65532,
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14832, 29668, 44504, 59340, 65532, 65532, 65532, 65532,
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22232, 44464, 65532, 65532, 65532, 65532, 65532, 65532,
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29616, 59232, 65532, 65532, 65532, 65532, 65532, 65532,
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2009-11-24 05:21:01 +08:00
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}
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};
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2009-01-17 00:08:42 +08:00
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/*********************/
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/* Aggregation logic */
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/*********************/
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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static void ath_tx_queue_tid(struct ath_txq *txq, struct ath_atx_tid *tid)
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2008-11-24 14:37:55 +08:00
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{
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2009-01-17 00:08:42 +08:00
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struct ath_atx_ac *ac = tid->ac;
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2008-11-24 14:37:55 +08:00
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2009-01-17 00:08:42 +08:00
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if (tid->paused)
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return;
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2008-11-24 14:37:55 +08:00
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2009-01-17 00:08:42 +08:00
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if (tid->sched)
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return;
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2008-11-24 14:37:55 +08:00
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2009-01-17 00:08:42 +08:00
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tid->sched = true;
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list_add_tail(&tid->list, &ac->tid_q);
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2008-10-29 12:44:26 +08:00
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2009-01-17 00:08:42 +08:00
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if (ac->sched)
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return;
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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ac->sched = true;
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list_add_tail(&ac->list, &txq->axq_acq);
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}
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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static void ath_tx_resume_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
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2008-08-04 15:16:41 +08:00
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{
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2010-11-07 21:59:39 +08:00
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struct ath_txq *txq = tid->ac->txq;
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2008-10-21 18:40:02 +08:00
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2010-08-01 21:47:32 +08:00
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WARN_ON(!tid->paused);
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2008-08-04 15:16:41 +08:00
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2010-08-01 21:47:32 +08:00
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spin_lock_bh(&txq->axq_lock);
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tid->paused = false;
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2008-08-04 15:16:41 +08:00
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2011-08-28 06:32:22 +08:00
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if (skb_queue_empty(&tid->buf_q))
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2009-01-17 00:08:42 +08:00
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goto unlock;
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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ath_tx_queue_tid(txq, tid);
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ath_txq_schedule(sc, txq);
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unlock:
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spin_unlock_bh(&txq->axq_lock);
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2008-10-29 12:44:26 +08:00
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}
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2008-08-04 15:16:41 +08:00
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2010-11-14 22:20:13 +08:00
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static struct ath_frame_info *get_frame_info(struct sk_buff *skb)
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2010-11-14 22:20:08 +08:00
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{
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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2010-11-14 22:20:13 +08:00
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BUILD_BUG_ON(sizeof(struct ath_frame_info) >
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sizeof(tx_info->rate_driver_data));
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return (struct ath_frame_info *) &tx_info->rate_driver_data[0];
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2010-11-14 22:20:08 +08:00
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}
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2009-01-17 00:08:42 +08:00
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static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
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2008-10-29 12:44:26 +08:00
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{
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2010-11-07 21:59:39 +08:00
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struct ath_txq *txq = tid->ac->txq;
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2011-08-28 06:32:22 +08:00
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struct sk_buff *skb;
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2009-01-17 00:08:42 +08:00
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struct ath_buf *bf;
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struct list_head bf_head;
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2010-09-20 19:45:38 +08:00
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struct ath_tx_status ts;
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2010-11-14 22:20:13 +08:00
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struct ath_frame_info *fi;
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2008-08-04 15:16:41 +08:00
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2010-09-20 19:45:38 +08:00
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INIT_LIST_HEAD(&bf_head);
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2008-10-21 18:40:02 +08:00
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2010-09-20 19:45:38 +08:00
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memset(&ts, 0, sizeof(ts));
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2010-08-01 21:47:32 +08:00
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spin_lock_bh(&txq->axq_lock);
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2008-08-04 15:16:41 +08:00
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2011-08-28 06:32:22 +08:00
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while ((skb = __skb_dequeue(&tid->buf_q))) {
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fi = get_frame_info(skb);
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bf = fi->bf;
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2010-11-20 10:08:46 +08:00
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spin_unlock_bh(&txq->axq_lock);
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2011-08-28 06:32:25 +08:00
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if (bf && fi->retries) {
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list_add_tail(&bf->list, &bf_head);
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2011-08-28 06:32:23 +08:00
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ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
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2011-03-12 08:11:28 +08:00
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ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 1);
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2010-09-20 19:45:38 +08:00
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} else {
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2011-08-28 06:32:25 +08:00
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ath_tx_send_normal(sc, txq, NULL, skb);
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2010-09-20 19:45:38 +08:00
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}
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2010-11-20 10:08:46 +08:00
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spin_lock_bh(&txq->axq_lock);
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2008-10-29 12:44:26 +08:00
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}
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2008-08-04 15:16:41 +08:00
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2011-11-22 06:32:06 +08:00
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if (tid->baw_head == tid->baw_tail) {
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tid->state &= ~AGGR_ADDBA_COMPLETE;
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tid->state &= ~AGGR_CLEANUP;
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}
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2009-01-17 00:08:42 +08:00
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spin_unlock_bh(&txq->axq_lock);
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2008-10-29 12:44:26 +08:00
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}
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
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int seqno)
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2008-10-29 12:44:26 +08:00
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{
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2009-01-17 00:08:42 +08:00
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int index, cindex;
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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index = ATH_BA_INDEX(tid->seq_start, seqno);
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cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
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2008-08-04 15:16:41 +08:00
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2010-09-20 19:45:36 +08:00
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__clear_bit(cindex, tid->tx_buf);
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2008-10-29 12:44:26 +08:00
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2010-09-20 19:45:36 +08:00
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while (tid->baw_head != tid->baw_tail && !test_bit(tid->baw_head, tid->tx_buf)) {
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2009-01-17 00:08:42 +08:00
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INCR(tid->seq_start, IEEE80211_SEQ_MAX);
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INCR(tid->baw_head, ATH_TID_MAX_BUFS);
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}
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2008-10-29 12:44:26 +08:00
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}
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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static void ath_tx_addto_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
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2010-11-14 22:20:01 +08:00
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u16 seqno)
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2008-10-29 12:44:26 +08:00
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{
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2009-01-17 00:08:42 +08:00
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int index, cindex;
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2008-10-29 12:44:26 +08:00
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2010-11-14 22:20:01 +08:00
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index = ATH_BA_INDEX(tid->seq_start, seqno);
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2009-01-17 00:08:42 +08:00
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cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
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2010-09-20 19:45:36 +08:00
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__set_bit(cindex, tid->tx_buf);
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2008-08-04 15:16:41 +08:00
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2009-01-17 00:08:42 +08:00
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if (index >= ((tid->baw_tail - tid->baw_head) &
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(ATH_TID_MAX_BUFS - 1))) {
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tid->baw_tail = cindex;
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INCR(tid->baw_tail, ATH_TID_MAX_BUFS);
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2008-08-04 15:16:41 +08:00
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}
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}
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/*
|
2009-01-17 00:08:42 +08:00
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|
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* TODO: For frame(s) that are in the retry state, we will reuse the
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* sequence number(s) without setting the retry bit. The
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* alternative is to give up on these and BAR the receiver's window
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* forward.
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2008-08-04 15:16:41 +08:00
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*/
|
2009-01-17 00:08:42 +08:00
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static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq,
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struct ath_atx_tid *tid)
|
2008-08-04 15:16:41 +08:00
|
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{
|
2011-08-28 06:32:22 +08:00
|
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struct sk_buff *skb;
|
2009-01-17 00:08:42 +08:00
|
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struct ath_buf *bf;
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struct list_head bf_head;
|
2010-03-30 11:07:11 +08:00
|
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struct ath_tx_status ts;
|
2010-11-14 22:20:13 +08:00
|
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struct ath_frame_info *fi;
|
2010-03-30 11:07:11 +08:00
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memset(&ts, 0, sizeof(ts));
|
2009-01-17 00:08:42 +08:00
|
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INIT_LIST_HEAD(&bf_head);
|
2008-08-04 15:16:41 +08:00
|
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2011-08-28 06:32:22 +08:00
|
|
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while ((skb = __skb_dequeue(&tid->buf_q))) {
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fi = get_frame_info(skb);
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bf = fi->bf;
|
2008-08-04 15:16:41 +08:00
|
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2011-08-28 06:32:25 +08:00
|
|
|
if (!bf) {
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|
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spin_unlock(&txq->axq_lock);
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ath_tx_complete(sc, skb, ATH_TX_ERROR, txq);
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|
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spin_lock(&txq->axq_lock);
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continue;
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}
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2011-08-28 06:32:22 +08:00
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|
|
list_add_tail(&bf->list, &bf_head);
|
2008-08-04 15:16:41 +08:00
|
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|
|
2010-11-14 22:20:13 +08:00
|
|
|
if (fi->retries)
|
2011-08-28 06:32:23 +08:00
|
|
|
ath_tx_update_baw(sc, tid, bf->bf_state.seqno);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
spin_unlock(&txq->axq_lock);
|
2010-03-30 11:07:11 +08:00
|
|
|
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
|
2009-01-17 00:08:42 +08:00
|
|
|
spin_lock(&txq->axq_lock);
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
tid->seq_next = tid->seq_start;
|
|
|
|
tid->baw_tail = tid->baw_head;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-07-27 14:38:16 +08:00
|
|
|
static void ath_tx_set_retry(struct ath_softc *sc, struct ath_txq *txq,
|
2010-11-14 22:20:13 +08:00
|
|
|
struct sk_buff *skb)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2010-11-29 02:37:48 +08:00
|
|
|
struct ath_frame_info *fi = get_frame_info(skb);
|
2011-09-15 18:59:49 +08:00
|
|
|
struct ath_buf *bf = fi->bf;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ieee80211_hdr *hdr;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-07-27 14:38:16 +08:00
|
|
|
TX_STAT_INC(txq->axq_qnum, a_retries);
|
2010-11-29 02:37:48 +08:00
|
|
|
if (fi->retries++ > 0)
|
2010-11-14 22:20:13 +08:00
|
|
|
return;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
|
|
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_RETRY);
|
2011-09-15 18:59:49 +08:00
|
|
|
dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
|
|
|
|
sizeof(*hdr), DMA_TO_DEVICE);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2010-04-20 01:57:30 +08:00
|
|
|
static struct ath_buf *ath_tx_get_buffer(struct ath_softc *sc)
|
2009-01-17 00:08:53 +08:00
|
|
|
{
|
2010-04-20 01:57:30 +08:00
|
|
|
struct ath_buf *bf = NULL;
|
2009-01-17 00:08:53 +08:00
|
|
|
|
|
|
|
spin_lock_bh(&sc->tx.txbuflock);
|
2010-04-20 01:57:30 +08:00
|
|
|
|
|
|
|
if (unlikely(list_empty(&sc->tx.txbuf))) {
|
2009-06-10 20:20:09 +08:00
|
|
|
spin_unlock_bh(&sc->tx.txbuflock);
|
|
|
|
return NULL;
|
|
|
|
}
|
2010-04-20 01:57:30 +08:00
|
|
|
|
|
|
|
bf = list_first_entry(&sc->tx.txbuf, struct ath_buf, list);
|
|
|
|
list_del(&bf->list);
|
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
spin_unlock_bh(&sc->tx.txbuflock);
|
|
|
|
|
2010-04-20 01:57:30 +08:00
|
|
|
return bf;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath_tx_return_buffer(struct ath_softc *sc, struct ath_buf *bf)
|
|
|
|
{
|
|
|
|
spin_lock_bh(&sc->tx.txbuflock);
|
|
|
|
list_add_tail(&bf->list, &sc->tx.txbuf);
|
|
|
|
spin_unlock_bh(&sc->tx.txbuflock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct ath_buf* ath_clone_txbuf(struct ath_softc *sc, struct ath_buf *bf)
|
|
|
|
{
|
|
|
|
struct ath_buf *tbf;
|
|
|
|
|
|
|
|
tbf = ath_tx_get_buffer(sc);
|
|
|
|
if (WARN_ON(!tbf))
|
|
|
|
return NULL;
|
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
ATH_TXBUF_RESET(tbf);
|
|
|
|
|
|
|
|
tbf->bf_mpdu = bf->bf_mpdu;
|
|
|
|
tbf->bf_buf_addr = bf->bf_buf_addr;
|
2010-04-16 05:38:45 +08:00
|
|
|
memcpy(tbf->bf_desc, bf->bf_desc, sc->sc_ah->caps.tx_desc_len);
|
2009-01-17 00:08:53 +08:00
|
|
|
tbf->bf_state = bf->bf_state;
|
|
|
|
|
|
|
|
return tbf;
|
|
|
|
}
|
|
|
|
|
2010-11-14 22:20:07 +08:00
|
|
|
static void ath_tx_count_frames(struct ath_softc *sc, struct ath_buf *bf,
|
|
|
|
struct ath_tx_status *ts, int txok,
|
|
|
|
int *nframes, int *nbad)
|
|
|
|
{
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ath_frame_info *fi;
|
2010-11-14 22:20:07 +08:00
|
|
|
u16 seq_st = 0;
|
|
|
|
u32 ba[WME_BA_BMP_SIZE >> 5];
|
|
|
|
int ba_index;
|
|
|
|
int isaggr = 0;
|
|
|
|
|
|
|
|
*nbad = 0;
|
|
|
|
*nframes = 0;
|
|
|
|
|
|
|
|
isaggr = bf_isaggr(bf);
|
|
|
|
if (isaggr) {
|
|
|
|
seq_st = ts->ts_seqnum;
|
|
|
|
memcpy(ba, &ts->ba_low, WME_BA_BMP_SIZE >> 3);
|
|
|
|
}
|
|
|
|
|
|
|
|
while (bf) {
|
2010-11-14 22:20:13 +08:00
|
|
|
fi = get_frame_info(bf->bf_mpdu);
|
2011-08-28 06:32:23 +08:00
|
|
|
ba_index = ATH_BA_INDEX(seq_st, bf->bf_state.seqno);
|
2010-11-14 22:20:07 +08:00
|
|
|
|
|
|
|
(*nframes)++;
|
|
|
|
if (!txok || (isaggr && !ATH_BA_ISSET(ba, ba_index)))
|
|
|
|
(*nbad)++;
|
|
|
|
|
|
|
|
bf = bf->bf_next;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
|
|
|
|
struct ath_buf *bf, struct list_head *bf_q,
|
2010-11-14 22:20:09 +08:00
|
|
|
struct ath_tx_status *ts, int txok, bool retry)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_node *an = NULL;
|
|
|
|
struct sk_buff *skb;
|
2009-01-27 16:00:37 +08:00
|
|
|
struct ieee80211_sta *sta;
|
2011-01-25 02:23:17 +08:00
|
|
|
struct ieee80211_hw *hw = sc->hw;
|
2009-01-27 16:00:37 +08:00
|
|
|
struct ieee80211_hdr *hdr;
|
2009-11-03 08:08:34 +08:00
|
|
|
struct ieee80211_tx_info *tx_info;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_atx_tid *tid = NULL;
|
2009-01-17 00:08:53 +08:00
|
|
|
struct ath_buf *bf_next, *bf_last = bf->bf_lastbf;
|
2011-08-28 06:32:22 +08:00
|
|
|
struct list_head bf_head;
|
|
|
|
struct sk_buff_head bf_pending;
|
2009-03-18 22:52:00 +08:00
|
|
|
u16 seq_st = 0, acked_cnt = 0, txfail_cnt = 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
u32 ba[WME_BA_BMP_SIZE >> 5];
|
2009-03-18 22:52:00 +08:00
|
|
|
int isaggr, txfail, txpending, sendbar = 0, needreset = 0, nbad = 0;
|
|
|
|
bool rc_update = true;
|
2010-06-25 07:26:16 +08:00
|
|
|
struct ieee80211_tx_rate rates[4];
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ath_frame_info *fi;
|
2010-10-11 04:44:39 +08:00
|
|
|
int nframes;
|
2010-11-14 22:20:02 +08:00
|
|
|
u8 tidno;
|
2011-10-07 08:28:15 +08:00
|
|
|
bool flush = !!(ts->ts_status & ATH9K_TX_FLUSH);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-30 17:58:36 +08:00
|
|
|
skb = bf->bf_mpdu;
|
2009-01-27 16:00:37 +08:00
|
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
|
|
|
2009-11-03 08:08:34 +08:00
|
|
|
tx_info = IEEE80211_SKB_CB(skb);
|
|
|
|
|
2010-06-25 07:26:16 +08:00
|
|
|
memcpy(rates, tx_info->control.rates, sizeof(rates));
|
|
|
|
|
2009-01-27 16:00:37 +08:00
|
|
|
rcu_read_lock();
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-09-24 00:44:36 +08:00
|
|
|
sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
|
2009-01-27 16:00:37 +08:00
|
|
|
if (!sta) {
|
|
|
|
rcu_read_unlock();
|
2010-07-08 01:42:09 +08:00
|
|
|
|
2010-07-13 05:16:34 +08:00
|
|
|
INIT_LIST_HEAD(&bf_head);
|
|
|
|
while (bf) {
|
|
|
|
bf_next = bf->bf_next;
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (!bf->bf_stale || bf_next != NULL)
|
2010-07-13 05:16:34 +08:00
|
|
|
list_move_tail(&bf->list, &bf_head);
|
|
|
|
|
|
|
|
ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
|
|
|
|
0, 0);
|
|
|
|
|
|
|
|
bf = bf_next;
|
|
|
|
}
|
2009-01-27 16:00:37 +08:00
|
|
|
return;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-01-27 16:00:37 +08:00
|
|
|
an = (struct ath_node *)sta->drv_priv;
|
2010-11-14 22:20:02 +08:00
|
|
|
tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
|
|
|
|
tid = ATH_AN_2_TID(an, tidno);
|
2009-01-27 16:00:37 +08:00
|
|
|
|
2010-07-11 18:48:44 +08:00
|
|
|
/*
|
|
|
|
* The hardware occasionally sends a tx status for the wrong TID.
|
|
|
|
* In this case, the BA status cannot be considered valid and all
|
|
|
|
* subframes need to be retransmitted
|
|
|
|
*/
|
2010-11-14 22:20:02 +08:00
|
|
|
if (tidno != ts->tid)
|
2010-07-11 18:48:44 +08:00
|
|
|
txok = false;
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
isaggr = bf_isaggr(bf);
|
2009-01-17 00:08:53 +08:00
|
|
|
memset(ba, 0, WME_BA_BMP_SIZE >> 3);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
if (isaggr && txok) {
|
2010-03-30 11:07:11 +08:00
|
|
|
if (ts->ts_flags & ATH9K_TX_BA) {
|
|
|
|
seq_st = ts->ts_seqnum;
|
|
|
|
memcpy(ba, &ts->ba_low, WME_BA_BMP_SIZE >> 3);
|
2009-01-17 00:08:42 +08:00
|
|
|
} else {
|
2009-01-17 00:08:53 +08:00
|
|
|
/*
|
|
|
|
* AR5416 can become deaf/mute when BA
|
|
|
|
* issue happens. Chip needs to be reset.
|
|
|
|
* But AP code may have sychronization issues
|
|
|
|
* when perform internal reset in this routine.
|
|
|
|
* Only enable reset in STA mode for now.
|
|
|
|
*/
|
2009-02-09 15:57:26 +08:00
|
|
|
if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION)
|
2009-01-17 00:08:53 +08:00
|
|
|
needreset = 1;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2011-08-28 06:32:22 +08:00
|
|
|
__skb_queue_head_init(&bf_pending);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-11-14 22:20:07 +08:00
|
|
|
ath_tx_count_frames(sc, bf, ts, txok, &nframes, &nbad);
|
2009-01-17 00:08:42 +08:00
|
|
|
while (bf) {
|
2011-08-28 06:32:23 +08:00
|
|
|
u16 seqno = bf->bf_state.seqno;
|
|
|
|
|
2011-01-15 21:30:15 +08:00
|
|
|
txfail = txpending = sendbar = 0;
|
2009-01-17 00:08:42 +08:00
|
|
|
bf_next = bf->bf_next;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-06-25 07:26:16 +08:00
|
|
|
skb = bf->bf_mpdu;
|
|
|
|
tx_info = IEEE80211_SKB_CB(skb);
|
2010-11-14 22:20:13 +08:00
|
|
|
fi = get_frame_info(skb);
|
2010-06-25 07:26:16 +08:00
|
|
|
|
2011-08-28 06:32:23 +08:00
|
|
|
if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, seqno))) {
|
2009-01-17 00:08:42 +08:00
|
|
|
/* transmit completion, subframe is
|
|
|
|
* acked by block ack */
|
2009-03-18 22:52:00 +08:00
|
|
|
acked_cnt++;
|
2009-01-17 00:08:42 +08:00
|
|
|
} else if (!isaggr && txok) {
|
|
|
|
/* transmit completion */
|
2009-03-18 22:52:00 +08:00
|
|
|
acked_cnt++;
|
2009-01-17 00:08:42 +08:00
|
|
|
} else {
|
2011-04-18 05:28:09 +08:00
|
|
|
if ((tid->state & AGGR_CLEANUP) || !retry) {
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* cleanup in progress, just fail
|
|
|
|
* the un-acked sub-frames
|
|
|
|
*/
|
|
|
|
txfail = 1;
|
2011-10-07 08:28:15 +08:00
|
|
|
} else if (flush) {
|
|
|
|
txpending = 1;
|
2011-04-18 05:28:09 +08:00
|
|
|
} else if (fi->retries < ATH_MAX_SW_RETRIES) {
|
2011-10-07 08:28:14 +08:00
|
|
|
if (txok || !an->sleeping)
|
2011-04-18 05:28:09 +08:00
|
|
|
ath_tx_set_retry(sc, txq, bf->bf_mpdu);
|
|
|
|
|
|
|
|
txpending = 1;
|
|
|
|
} else {
|
|
|
|
txfail = 1;
|
|
|
|
sendbar = 1;
|
|
|
|
txfail_cnt++;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
/*
|
|
|
|
* Make sure the last desc is reclaimed if it
|
|
|
|
* not a holding desc.
|
|
|
|
*/
|
2011-08-28 06:32:22 +08:00
|
|
|
INIT_LIST_HEAD(&bf_head);
|
|
|
|
if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) ||
|
|
|
|
bf_next != NULL || !bf_last->bf_stale)
|
2009-01-17 00:08:53 +08:00
|
|
|
list_move_tail(&bf->list, &bf_head);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-09-20 19:45:38 +08:00
|
|
|
if (!txpending || (tid->state & AGGR_CLEANUP)) {
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* complete the acked-ones/xretried ones; update
|
|
|
|
* block-ack window
|
|
|
|
*/
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2011-08-28 06:32:23 +08:00
|
|
|
ath_tx_update_baw(sc, tid, seqno);
|
2009-01-17 00:08:42 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-20 17:57:49 +08:00
|
|
|
if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
|
2010-06-25 07:26:16 +08:00
|
|
|
memcpy(tx_info->control.rates, rates, sizeof(rates));
|
2011-09-15 03:24:26 +08:00
|
|
|
ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok);
|
2009-03-20 17:57:49 +08:00
|
|
|
rc_update = false;
|
|
|
|
}
|
|
|
|
|
2010-03-30 11:07:11 +08:00
|
|
|
ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
|
|
|
|
!txfail, sendbar);
|
2009-01-17 00:08:42 +08:00
|
|
|
} else {
|
2009-01-17 00:08:53 +08:00
|
|
|
/* retry the un-acked ones */
|
2010-04-16 05:39:36 +08:00
|
|
|
if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) {
|
|
|
|
if (bf->bf_next == NULL && bf_last->bf_stale) {
|
|
|
|
struct ath_buf *tbf;
|
|
|
|
|
|
|
|
tbf = ath_clone_txbuf(sc, bf_last);
|
|
|
|
/*
|
|
|
|
* 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);
|
2011-08-28 06:32:23 +08:00
|
|
|
ath_tx_update_baw(sc, tid, seqno);
|
2010-04-16 05:39:36 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
|
|
|
|
ath_tx_complete_buf(sc, bf, txq,
|
|
|
|
&bf_head,
|
2011-10-07 08:28:15 +08:00
|
|
|
ts, 0,
|
|
|
|
!flush);
|
2010-04-16 05:39:36 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2011-08-28 06:32:22 +08:00
|
|
|
fi->bf = tbf;
|
2009-07-15 08:17:11 +08:00
|
|
|
}
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Put this buffer to the temporary pending
|
|
|
|
* queue to retain ordering
|
|
|
|
*/
|
2011-08-28 06:32:22 +08:00
|
|
|
__skb_queue_tail(&bf_pending, skb);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
bf = bf_next;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2010-07-23 09:53:16 +08:00
|
|
|
/* prepend un-acked frames to the beginning of the pending frame queue */
|
2011-08-28 06:32:22 +08:00
|
|
|
if (!skb_queue_empty(&bf_pending)) {
|
2011-04-18 05:28:09 +08:00
|
|
|
if (an->sleeping)
|
2011-09-29 22:04:26 +08:00
|
|
|
ieee80211_sta_set_buffered(sta, tid->tidno, true);
|
2011-04-18 05:28:09 +08:00
|
|
|
|
2010-07-23 09:53:16 +08:00
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2011-08-28 06:32:22 +08:00
|
|
|
skb_queue_splice(&bf_pending, &tid->buf_q);
|
2011-10-07 08:28:14 +08:00
|
|
|
if (!an->sleeping) {
|
2011-08-11 05:23:35 +08:00
|
|
|
ath_tx_queue_tid(txq, tid);
|
2011-10-07 08:28:14 +08:00
|
|
|
|
|
|
|
if (ts->ts_status & ATH9K_TXERR_FILT)
|
|
|
|
tid->ac->clear_ps_filter = true;
|
|
|
|
}
|
2010-07-23 09:53:16 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
}
|
|
|
|
|
2011-11-22 06:32:06 +08:00
|
|
|
if (tid->state & AGGR_CLEANUP)
|
2010-09-20 19:45:38 +08:00
|
|
|
ath_tx_flush_tid(sc, tid);
|
|
|
|
|
2009-01-27 16:00:37 +08:00
|
|
|
rcu_read_unlock();
|
|
|
|
|
2011-10-07 08:28:13 +08:00
|
|
|
if (needreset) {
|
|
|
|
RESET_STAT_INC(sc, RESET_TYPE_TX_ERROR);
|
2011-09-03 07:40:25 +08:00
|
|
|
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
2011-10-07 08:28:13 +08:00
|
|
|
}
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-08-23 15:02:57 +08:00
|
|
|
static bool ath_lookup_legacy(struct ath_buf *bf)
|
|
|
|
{
|
|
|
|
struct sk_buff *skb;
|
|
|
|
struct ieee80211_tx_info *tx_info;
|
|
|
|
struct ieee80211_tx_rate *rates;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
skb = bf->bf_mpdu;
|
|
|
|
tx_info = IEEE80211_SKB_CB(skb);
|
|
|
|
rates = tx_info->control.rates;
|
|
|
|
|
2011-08-27 16:25:27 +08:00
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
if (!rates[i].count || rates[i].idx < 0)
|
|
|
|
break;
|
|
|
|
|
2011-08-23 15:02:57 +08:00
|
|
|
if (!(rates[i].flags & IEEE80211_TX_RC_MCS))
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
|
|
|
|
struct ath_atx_tid *tid)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2008-10-29 12:44:26 +08:00
|
|
|
struct sk_buff *skb;
|
|
|
|
struct ieee80211_tx_info *tx_info;
|
2008-11-18 11:37:30 +08:00
|
|
|
struct ieee80211_tx_rate *rates;
|
2011-10-24 20:49:49 +08:00
|
|
|
struct ath_mci_profile *mci = &sc->btcoex.mci;
|
2009-01-17 00:08:53 +08:00
|
|
|
u32 max_4ms_framelen, frmlen;
|
2009-07-23 18:02:41 +08:00
|
|
|
u16 aggr_limit, legacy = 0;
|
2009-01-17 00:08:42 +08:00
|
|
|
int i;
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2009-03-30 17:58:36 +08:00
|
|
|
skb = bf->bf_mpdu;
|
2008-10-29 12:44:26 +08:00
|
|
|
tx_info = IEEE80211_SKB_CB(skb);
|
2008-11-18 11:37:53 +08:00
|
|
|
rates = tx_info->control.rates;
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* Find the lowest frame length among the rate series that will have a
|
|
|
|
* 4ms transmit duration.
|
|
|
|
* TODO - TXOP limit needs to be considered.
|
|
|
|
*/
|
|
|
|
max_4ms_framelen = ATH_AMPDU_LIMIT_MAX;
|
2008-11-18 11:37:53 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
if (rates[i].count) {
|
2009-11-24 05:21:01 +08:00
|
|
|
int modeidx;
|
|
|
|
if (!(rates[i].flags & IEEE80211_TX_RC_MCS)) {
|
2009-01-17 00:08:42 +08:00
|
|
|
legacy = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2010-04-20 01:57:32 +08:00
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
|
2009-11-24 05:21:01 +08:00
|
|
|
modeidx = MCS_HT40;
|
|
|
|
else
|
2010-04-20 01:57:32 +08:00
|
|
|
modeidx = MCS_HT20;
|
|
|
|
|
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
|
|
|
|
modeidx++;
|
2009-11-24 05:21:01 +08:00
|
|
|
|
|
|
|
frmlen = ath_max_4ms_framelen[modeidx][rates[i].idx];
|
2009-01-17 00:08:53 +08:00
|
|
|
max_4ms_framelen = min(max_4ms_framelen, frmlen);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|
2008-11-18 11:37:53 +08:00
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* limit aggregate size by the minimum rate if rate selected is
|
|
|
|
* not a probe rate, if rate selected is a probe rate then
|
|
|
|
* avoid aggregation of this packet.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-01-17 00:08:42 +08:00
|
|
|
if (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE || legacy)
|
|
|
|
return 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-10-24 20:49:49 +08:00
|
|
|
if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
|
|
|
|
aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
|
|
|
|
else if (sc->sc_flags & SC_OP_BT_PRIORITY_DETECTED)
|
2009-08-26 23:38:50 +08:00
|
|
|
aggr_limit = min((max_4ms_framelen * 3) / 8,
|
|
|
|
(u32)ATH_AMPDU_LIMIT_MAX);
|
|
|
|
else
|
|
|
|
aggr_limit = min(max_4ms_framelen,
|
|
|
|
(u32)ATH_AMPDU_LIMIT_MAX);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
2011-03-31 09:57:33 +08:00
|
|
|
* h/w can accept aggregates up to 16 bit lengths (65535).
|
|
|
|
* The IE, however can hold up to 65536, which shows up here
|
2009-01-17 00:08:42 +08:00
|
|
|
* as zero. Ignore 65536 since we are constrained by hw.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-07-23 18:02:41 +08:00
|
|
|
if (tid->an->maxampdu)
|
|
|
|
aggr_limit = min(aggr_limit, tid->an->maxampdu);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
return aggr_limit;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
2009-01-17 00:08:53 +08:00
|
|
|
* Returns the number of delimiters to be added to
|
2009-01-17 00:08:42 +08:00
|
|
|
* meet the minimum required mpdudensity.
|
|
|
|
*/
|
|
|
|
static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
|
2011-08-13 12:58:08 +08:00
|
|
|
struct ath_buf *bf, u16 frmlen,
|
|
|
|
bool first_subfrm)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
2011-08-13 12:58:08 +08:00
|
|
|
#define FIRST_DESC_NDELIMS 60
|
2009-01-17 00:08:42 +08:00
|
|
|
struct sk_buff *skb = bf->bf_mpdu;
|
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
2009-07-23 18:02:41 +08:00
|
|
|
u32 nsymbits, nsymbols;
|
2009-01-17 00:08:42 +08:00
|
|
|
u16 minlen;
|
2009-11-24 05:21:01 +08:00
|
|
|
u8 flags, rix;
|
2010-04-20 01:57:33 +08:00
|
|
|
int width, streams, half_gi, ndelim, mindelim;
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu);
|
2009-01-17 00:08:42 +08:00
|
|
|
|
|
|
|
/* Select standard number of delimiters based on frame length alone */
|
|
|
|
ndelim = ATH_AGGR_GET_NDELIM(frmlen);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* If encryption enabled, hardware requires some more padding between
|
|
|
|
* subframes.
|
|
|
|
* TODO - this could be improved to be dependent on the rate.
|
|
|
|
* The hardware can keep up at lower rates, but not higher rates
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2011-07-01 21:07:33 +08:00
|
|
|
if ((fi->keyix != ATH9K_TXKEYIX_INVALID) &&
|
|
|
|
!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA))
|
2009-01-17 00:08:42 +08:00
|
|
|
ndelim += ATH_AGGR_ENCRYPTDELIM;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-08-13 12:58:08 +08:00
|
|
|
/*
|
|
|
|
* Add delimiter when using RTS/CTS with aggregation
|
|
|
|
* and non enterprise AR9003 card
|
|
|
|
*/
|
2011-08-30 00:57:54 +08:00
|
|
|
if (first_subfrm && !AR_SREV_9580_10_OR_LATER(sc->sc_ah) &&
|
|
|
|
(sc->sc_ah->ent_mode & AR_ENT_OTP_MIN_PKT_SIZE_DISABLE))
|
2011-08-13 12:58:08 +08:00
|
|
|
ndelim = max(ndelim, FIRST_DESC_NDELIMS);
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* Convert desired mpdu density from microeconds to bytes based
|
|
|
|
* on highest rate in rate series (i.e. first rate) to determine
|
|
|
|
* required minimum length for subframe. Take into account
|
|
|
|
* whether high rate is 20 or 40Mhz and half or full GI.
|
2009-07-23 18:02:41 +08:00
|
|
|
*
|
2009-01-17 00:08:42 +08:00
|
|
|
* If there is no mpdu density restriction, no further calculation
|
|
|
|
* is needed.
|
|
|
|
*/
|
2009-07-23 18:02:41 +08:00
|
|
|
|
|
|
|
if (tid->an->mpdudensity == 0)
|
2009-01-17 00:08:42 +08:00
|
|
|
return ndelim;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
rix = tx_info->control.rates[0].idx;
|
|
|
|
flags = tx_info->control.rates[0].flags;
|
|
|
|
width = (flags & IEEE80211_TX_RC_40_MHZ_WIDTH) ? 1 : 0;
|
|
|
|
half_gi = (flags & IEEE80211_TX_RC_SHORT_GI) ? 1 : 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (half_gi)
|
2009-07-23 18:02:41 +08:00
|
|
|
nsymbols = NUM_SYMBOLS_PER_USEC_HALFGI(tid->an->mpdudensity);
|
2009-01-17 00:08:42 +08:00
|
|
|
else
|
2009-07-23 18:02:41 +08:00
|
|
|
nsymbols = NUM_SYMBOLS_PER_USEC(tid->an->mpdudensity);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (nsymbols == 0)
|
|
|
|
nsymbols = 1;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-04-20 01:57:33 +08:00
|
|
|
streams = HT_RC_2_STREAMS(rix);
|
|
|
|
nsymbits = bits_per_symbol[rix % 8][width] * streams;
|
2009-01-17 00:08:42 +08:00
|
|
|
minlen = (nsymbols * nsymbits) / BITS_PER_BYTE;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (frmlen < minlen) {
|
|
|
|
mindelim = (minlen - frmlen) / ATH_AGGR_DELIM_SZ;
|
|
|
|
ndelim = max(mindelim, ndelim);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
return ndelim;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
|
2009-07-27 14:38:16 +08:00
|
|
|
struct ath_txq *txq,
|
2009-01-17 00:08:53 +08:00
|
|
|
struct ath_atx_tid *tid,
|
2010-11-14 22:20:06 +08:00
|
|
|
struct list_head *bf_q,
|
|
|
|
int *aggr_len)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
#define PADBYTES(_len) ((4 - ((_len) % 4)) % 4)
|
2011-08-28 06:32:22 +08:00
|
|
|
struct ath_buf *bf, *bf_first = NULL, *bf_prev = NULL;
|
2009-01-17 00:08:53 +08:00
|
|
|
int rl = 0, nframes = 0, ndelim, prev_al = 0;
|
2009-01-17 00:08:42 +08:00
|
|
|
u16 aggr_limit = 0, al = 0, bpad = 0,
|
|
|
|
al_delta, h_baw = tid->baw_size / 2;
|
|
|
|
enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
|
2010-10-21 08:47:24 +08:00
|
|
|
struct ieee80211_tx_info *tx_info;
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ath_frame_info *fi;
|
2011-08-28 06:32:22 +08:00
|
|
|
struct sk_buff *skb;
|
2011-08-28 06:32:23 +08:00
|
|
|
u16 seqno;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
do {
|
2011-08-28 06:32:22 +08:00
|
|
|
skb = skb_peek(&tid->buf_q);
|
|
|
|
fi = get_frame_info(skb);
|
|
|
|
bf = fi->bf;
|
2011-08-28 06:32:25 +08:00
|
|
|
if (!fi->bf)
|
|
|
|
bf = ath_tx_setup_buffer(sc, txq, tid, skb);
|
2011-08-28 06:32:22 +08:00
|
|
|
|
2011-08-28 06:32:25 +08:00
|
|
|
if (!bf)
|
|
|
|
continue;
|
|
|
|
|
2011-09-15 03:24:17 +08:00
|
|
|
bf->bf_state.bf_type = BUF_AMPDU | BUF_AGGR;
|
2011-08-28 06:32:25 +08:00
|
|
|
seqno = bf->bf_state.seqno;
|
2011-08-28 06:32:22 +08:00
|
|
|
if (!bf_first)
|
|
|
|
bf_first = bf;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
/* do not step over block-ack window */
|
2011-08-28 06:32:23 +08:00
|
|
|
if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno)) {
|
2009-01-17 00:08:42 +08:00
|
|
|
status = ATH_AGGR_BAW_CLOSED;
|
|
|
|
break;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (!rl) {
|
|
|
|
aggr_limit = ath_lookup_rate(sc, bf, tid);
|
|
|
|
rl = 1;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
/* do not exceed aggregation limit */
|
2010-11-14 22:20:13 +08:00
|
|
|
al_delta = ATH_AGGR_DELIM_SZ + fi->framelen;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
if (nframes &&
|
2011-08-23 15:02:57 +08:00
|
|
|
((aggr_limit < (al + bpad + al_delta + prev_al)) ||
|
|
|
|
ath_lookup_legacy(bf))) {
|
2009-01-17 00:08:42 +08:00
|
|
|
status = ATH_AGGR_LIMITED;
|
|
|
|
break;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-10-21 08:47:24 +08:00
|
|
|
tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
|
2011-09-15 03:24:25 +08:00
|
|
|
if (nframes && (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE))
|
2010-10-21 08:47:24 +08:00
|
|
|
break;
|
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
/* do not exceed subframe limit */
|
|
|
|
if (nframes >= min((int)h_baw, ATH_AMPDU_SUBFRAME_DEFAULT)) {
|
2009-01-17 00:08:42 +08:00
|
|
|
status = ATH_AGGR_LIMITED;
|
|
|
|
break;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
/* add padding for previous frame to aggregation length */
|
2009-01-17 00:08:42 +08:00
|
|
|
al += bpad + al_delta;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* Get the delimiters needed to meet the MPDU
|
|
|
|
* density for this node.
|
|
|
|
*/
|
2011-08-13 12:58:08 +08:00
|
|
|
ndelim = ath_compute_num_delims(sc, tid, bf_first, fi->framelen,
|
|
|
|
!nframes);
|
2009-01-17 00:08:42 +08:00
|
|
|
bpad = PADBYTES(al_delta) + (ndelim << 2);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-08-13 12:58:08 +08:00
|
|
|
nframes++;
|
2009-01-17 00:08:42 +08:00
|
|
|
bf->bf_next = NULL;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
/* link buffers of this frame to the aggregate */
|
2010-11-14 22:20:13 +08:00
|
|
|
if (!fi->retries)
|
2011-08-28 06:32:23 +08:00
|
|
|
ath_tx_addto_baw(sc, tid, seqno);
|
2011-09-15 03:24:17 +08:00
|
|
|
bf->bf_state.ndelim = ndelim;
|
2011-08-28 06:32:22 +08:00
|
|
|
|
|
|
|
__skb_unlink(skb, &tid->buf_q);
|
|
|
|
list_add_tail(&bf->list, bf_q);
|
2011-09-15 03:24:17 +08:00
|
|
|
if (bf_prev)
|
2009-01-17 00:08:42 +08:00
|
|
|
bf_prev->bf_next = bf;
|
2011-09-15 03:24:17 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
bf_prev = bf;
|
2009-07-27 14:38:16 +08:00
|
|
|
|
2011-08-28 06:32:22 +08:00
|
|
|
} while (!skb_queue_empty(&tid->buf_q));
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-11-14 22:20:06 +08:00
|
|
|
*aggr_len = al;
|
2009-01-17 00:08:53 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
return status;
|
|
|
|
#undef PADBYTES
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-09-15 03:24:18 +08:00
|
|
|
/*
|
|
|
|
* rix - rate index
|
|
|
|
* pktlen - total bytes (delims + data + fcs + pads + pad delims)
|
|
|
|
* width - 0 for 20 MHz, 1 for 40 MHz
|
|
|
|
* half_gi - to use 4us v/s 3.6 us for symbol time
|
|
|
|
*/
|
|
|
|
static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen,
|
|
|
|
int width, int half_gi, bool shortPreamble)
|
|
|
|
{
|
|
|
|
u32 nbits, nsymbits, duration, nsymbols;
|
|
|
|
int streams;
|
|
|
|
|
|
|
|
/* find number of symbols: PLCP + data */
|
|
|
|
streams = HT_RC_2_STREAMS(rix);
|
|
|
|
nbits = (pktlen << 3) + OFDM_PLCP_BITS;
|
|
|
|
nsymbits = bits_per_symbol[rix % 8][width] * streams;
|
|
|
|
nsymbols = (nbits + nsymbits - 1) / nsymbits;
|
|
|
|
|
|
|
|
if (!half_gi)
|
|
|
|
duration = SYMBOL_TIME(nsymbols);
|
|
|
|
else
|
|
|
|
duration = SYMBOL_TIME_HALFGI(nsymbols);
|
|
|
|
|
|
|
|
/* addup duration for legacy/ht training and signal fields */
|
|
|
|
duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);
|
|
|
|
|
|
|
|
return duration;
|
|
|
|
}
|
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf,
|
|
|
|
struct ath_tx_info *info, int len)
|
2011-09-15 03:24:18 +08:00
|
|
|
{
|
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
struct sk_buff *skb;
|
|
|
|
struct ieee80211_tx_info *tx_info;
|
|
|
|
struct ieee80211_tx_rate *rates;
|
|
|
|
const struct ieee80211_rate *rate;
|
|
|
|
struct ieee80211_hdr *hdr;
|
2011-09-15 03:24:22 +08:00
|
|
|
int i;
|
|
|
|
u8 rix = 0;
|
2011-09-15 03:24:18 +08:00
|
|
|
|
|
|
|
skb = bf->bf_mpdu;
|
|
|
|
tx_info = IEEE80211_SKB_CB(skb);
|
|
|
|
rates = tx_info->control.rates;
|
|
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
2011-09-15 03:24:22 +08:00
|
|
|
|
|
|
|
/* set dur_update_en for l-sig computation except for PS-Poll frames */
|
|
|
|
info->dur_update = !ieee80211_is_pspoll(hdr->frame_control);
|
2011-09-15 03:24:18 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We check if Short Preamble is needed for the CTS rate by
|
|
|
|
* checking the BSS's global flag.
|
|
|
|
* But for the rate series, IEEE80211_TX_RC_USE_SHORT_PREAMBLE is used.
|
|
|
|
*/
|
|
|
|
rate = ieee80211_get_rts_cts_rate(sc->hw, tx_info);
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rtscts_rate = rate->hw_value;
|
2011-09-15 03:24:18 +08:00
|
|
|
if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rtscts_rate |= rate->hw_value_short;
|
2011-09-15 03:24:18 +08:00
|
|
|
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
|
|
bool is_40, is_sgi, is_sp;
|
|
|
|
int phy;
|
|
|
|
|
|
|
|
if (!rates[i].count || (rates[i].idx < 0))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
rix = rates[i].idx;
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].Tries = rates[i].count;
|
2011-09-15 03:24:18 +08:00
|
|
|
|
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
|
|
|
|
info->flags |= ATH9K_TXDESC_RTSENA;
|
2011-09-15 03:24:18 +08:00
|
|
|
} else if (rates[i].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
|
|
|
|
info->flags |= ATH9K_TXDESC_CTSENA;
|
2011-09-15 03:24:18 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].RateFlags |= ATH9K_RATESERIES_2040;
|
2011-09-15 03:24:18 +08:00
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].RateFlags |= ATH9K_RATESERIES_HALFGI;
|
2011-09-15 03:24:18 +08:00
|
|
|
|
|
|
|
is_sgi = !!(rates[i].flags & IEEE80211_TX_RC_SHORT_GI);
|
|
|
|
is_40 = !!(rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH);
|
|
|
|
is_sp = !!(rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
|
|
|
|
|
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_MCS) {
|
|
|
|
/* MCS rates */
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].Rate = rix | 0x80;
|
|
|
|
info->rates[i].ChSel = ath_txchainmask_reduction(sc,
|
|
|
|
ah->txchainmask, info->rates[i].Rate);
|
|
|
|
info->rates[i].PktDuration = ath_pkt_duration(sc, rix, len,
|
2011-09-15 03:24:18 +08:00
|
|
|
is_40, is_sgi, is_sp);
|
|
|
|
if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC))
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].RateFlags |= ATH9K_RATESERIES_STBC;
|
2011-09-15 03:24:18 +08:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* legacy rates */
|
|
|
|
if ((tx_info->band == IEEE80211_BAND_2GHZ) &&
|
|
|
|
!(rate->flags & IEEE80211_RATE_ERP_G))
|
|
|
|
phy = WLAN_RC_PHY_CCK;
|
|
|
|
else
|
|
|
|
phy = WLAN_RC_PHY_OFDM;
|
|
|
|
|
|
|
|
rate = &sc->sbands[tx_info->band].bitrates[rates[i].idx];
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].Rate = rate->hw_value;
|
2011-09-15 03:24:18 +08:00
|
|
|
if (rate->hw_value_short) {
|
|
|
|
if (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].Rate |= rate->hw_value_short;
|
2011-09-15 03:24:18 +08:00
|
|
|
} else {
|
|
|
|
is_sp = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bf->bf_state.bfs_paprd)
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].ChSel = ah->txchainmask;
|
2011-09-15 03:24:18 +08:00
|
|
|
else
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].ChSel = ath_txchainmask_reduction(sc,
|
|
|
|
ah->txchainmask, info->rates[i].Rate);
|
2011-09-15 03:24:18 +08:00
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
info->rates[i].PktDuration = ath9k_hw_computetxtime(sc->sc_ah,
|
2011-09-15 03:24:18 +08:00
|
|
|
phy, rate->bitrate * 100, len, rix, is_sp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* For AR5416 - RTS cannot be followed by a frame larger than 8K */
|
|
|
|
if (bf_isaggr(bf) && (len > sc->sc_ah->caps.rts_aggr_limit))
|
2011-09-15 03:24:22 +08:00
|
|
|
info->flags &= ~ATH9K_TXDESC_RTSENA;
|
2011-09-15 03:24:18 +08:00
|
|
|
|
|
|
|
/* ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive. */
|
2011-09-15 03:24:22 +08:00
|
|
|
if (info->flags & ATH9K_TXDESC_RTSENA)
|
|
|
|
info->flags &= ~ATH9K_TXDESC_CTSENA;
|
|
|
|
}
|
2011-09-15 03:24:18 +08:00
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct ieee80211_hdr *hdr;
|
|
|
|
enum ath9k_pkt_type htype;
|
|
|
|
__le16 fc;
|
|
|
|
|
|
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
|
|
fc = hdr->frame_control;
|
2011-09-15 03:24:18 +08:00
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
if (ieee80211_is_beacon(fc))
|
|
|
|
htype = ATH9K_PKT_TYPE_BEACON;
|
|
|
|
else if (ieee80211_is_probe_resp(fc))
|
|
|
|
htype = ATH9K_PKT_TYPE_PROBE_RESP;
|
|
|
|
else if (ieee80211_is_atim(fc))
|
|
|
|
htype = ATH9K_PKT_TYPE_ATIM;
|
|
|
|
else if (ieee80211_is_pspoll(fc))
|
|
|
|
htype = ATH9K_PKT_TYPE_PSPOLL;
|
|
|
|
else
|
|
|
|
htype = ATH9K_PKT_TYPE_NORMAL;
|
|
|
|
|
|
|
|
return htype;
|
2011-09-15 03:24:18 +08:00
|
|
|
}
|
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf,
|
|
|
|
struct ath_txq *txq, int len)
|
2011-09-15 03:24:17 +08:00
|
|
|
{
|
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
|
|
|
|
struct ath_buf *bf_first = bf;
|
2011-09-15 03:24:22 +08:00
|
|
|
struct ath_tx_info info;
|
2011-09-15 03:24:17 +08:00
|
|
|
bool aggr = !!(bf->bf_state.bf_type & BUF_AGGR);
|
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
memset(&info, 0, sizeof(info));
|
|
|
|
info.is_first = true;
|
|
|
|
info.is_last = true;
|
|
|
|
info.txpower = MAX_RATE_POWER;
|
|
|
|
info.qcu = txq->axq_qnum;
|
|
|
|
|
|
|
|
info.flags = ATH9K_TXDESC_INTREQ;
|
|
|
|
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
|
|
|
|
info.flags |= ATH9K_TXDESC_NOACK;
|
|
|
|
if (tx_info->flags & IEEE80211_TX_CTL_LDPC)
|
|
|
|
info.flags |= ATH9K_TXDESC_LDPC;
|
|
|
|
|
|
|
|
ath_buf_set_rate(sc, bf, &info, len);
|
|
|
|
|
|
|
|
if (tx_info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
|
|
|
|
info.flags |= ATH9K_TXDESC_CLRDMASK;
|
|
|
|
|
|
|
|
if (bf->bf_state.bfs_paprd)
|
|
|
|
info.flags |= (u32) bf->bf_state.bfs_paprd << ATH9K_TXDESC_PAPRD_S;
|
2011-09-15 03:24:17 +08:00
|
|
|
|
|
|
|
|
|
|
|
while (bf) {
|
2011-09-15 03:24:22 +08:00
|
|
|
struct sk_buff *skb = bf->bf_mpdu;
|
|
|
|
struct ath_frame_info *fi = get_frame_info(skb);
|
|
|
|
|
|
|
|
info.type = get_hw_packet_type(skb);
|
2011-09-15 03:24:17 +08:00
|
|
|
if (bf->bf_next)
|
2011-09-15 03:24:22 +08:00
|
|
|
info.link = bf->bf_next->bf_daddr;
|
2011-09-15 03:24:17 +08:00
|
|
|
else
|
2011-09-15 03:24:22 +08:00
|
|
|
info.link = 0;
|
|
|
|
|
2011-09-20 03:42:31 +08:00
|
|
|
info.buf_addr[0] = bf->bf_buf_addr;
|
|
|
|
info.buf_len[0] = skb->len;
|
2011-09-15 03:24:22 +08:00
|
|
|
info.pkt_len = fi->framelen;
|
|
|
|
info.keyix = fi->keyix;
|
|
|
|
info.keytype = fi->keytype;
|
|
|
|
|
|
|
|
if (aggr) {
|
2011-09-15 03:24:17 +08:00
|
|
|
if (bf == bf_first)
|
2011-09-15 03:24:22 +08:00
|
|
|
info.aggr = AGGR_BUF_FIRST;
|
|
|
|
else if (!bf->bf_next)
|
|
|
|
info.aggr = AGGR_BUF_LAST;
|
|
|
|
else
|
|
|
|
info.aggr = AGGR_BUF_MIDDLE;
|
2011-09-15 03:24:17 +08:00
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
info.ndelim = bf->bf_state.ndelim;
|
|
|
|
info.aggr_len = len;
|
2011-09-15 03:24:17 +08:00
|
|
|
}
|
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
ath9k_hw_set_txdesc(ah, bf->bf_desc, &info);
|
2011-09-15 03:24:17 +08:00
|
|
|
bf = bf->bf_next;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
|
|
|
|
struct ath_atx_tid *tid)
|
|
|
|
{
|
2009-01-17 00:08:53 +08:00
|
|
|
struct ath_buf *bf;
|
2009-01-17 00:08:42 +08:00
|
|
|
enum ATH_AGGR_STATUS status;
|
2011-09-15 03:24:17 +08:00
|
|
|
struct ieee80211_tx_info *tx_info;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct list_head bf_q;
|
2010-11-14 22:20:06 +08:00
|
|
|
int aggr_len;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
do {
|
2011-08-28 06:32:22 +08:00
|
|
|
if (skb_queue_empty(&tid->buf_q))
|
2009-01-17 00:08:42 +08:00
|
|
|
return;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
INIT_LIST_HEAD(&bf_q);
|
|
|
|
|
2010-11-14 22:20:06 +08:00
|
|
|
status = ath_tx_form_aggr(sc, txq, tid, &bf_q, &aggr_len);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
/*
|
2009-01-17 00:08:53 +08:00
|
|
|
* no frames picked up to be aggregated;
|
|
|
|
* block-ack window is not open.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-01-17 00:08:42 +08:00
|
|
|
if (list_empty(&bf_q))
|
|
|
|
break;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
bf = list_first_entry(&bf_q, struct ath_buf, list);
|
2009-01-17 00:08:53 +08:00
|
|
|
bf->bf_lastbf = list_entry(bf_q.prev, struct ath_buf, list);
|
2011-09-15 03:24:17 +08:00
|
|
|
tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-04-18 05:28:09 +08:00
|
|
|
if (tid->ac->clear_ps_filter) {
|
|
|
|
tid->ac->clear_ps_filter = false;
|
2011-09-15 03:24:17 +08:00
|
|
|
tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
|
|
|
|
} else {
|
|
|
|
tx_info->flags &= ~IEEE80211_TX_CTL_CLEAR_PS_FILT;
|
2011-04-18 05:28:09 +08:00
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
/* if only one frame, send as non-aggregate */
|
2010-11-14 22:20:07 +08:00
|
|
|
if (bf == bf->bf_lastbf) {
|
2011-09-15 03:24:17 +08:00
|
|
|
aggr_len = get_frame_info(bf->bf_mpdu)->framelen;
|
|
|
|
bf->bf_state.bf_type = BUF_AMPDU;
|
|
|
|
} else {
|
|
|
|
TX_STAT_INC(txq->axq_qnum, a_aggr);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-09-15 03:24:22 +08:00
|
|
|
ath_tx_fill_desc(sc, bf, txq, aggr_len);
|
2011-05-19 18:20:25 +08:00
|
|
|
ath_tx_txqaddbuf(sc, txq, &bf_q, false);
|
2010-12-17 07:57:00 +08:00
|
|
|
} while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH &&
|
2009-01-17 00:08:42 +08:00
|
|
|
status != ATH_AGGR_BAW_CLOSED);
|
|
|
|
}
|
|
|
|
|
2010-09-21 01:35:28 +08:00
|
|
|
int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
|
|
|
|
u16 tid, u16 *ssn)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
|
|
|
struct ath_atx_tid *txtid;
|
|
|
|
struct ath_node *an;
|
|
|
|
|
|
|
|
an = (struct ath_node *)sta->drv_priv;
|
2009-07-23 18:02:37 +08:00
|
|
|
txtid = ATH_AN_2_TID(an, tid);
|
2010-09-21 01:35:28 +08:00
|
|
|
|
|
|
|
if (txtid->state & (AGGR_CLEANUP | AGGR_ADDBA_COMPLETE))
|
|
|
|
return -EAGAIN;
|
|
|
|
|
2009-07-23 18:02:37 +08:00
|
|
|
txtid->state |= AGGR_ADDBA_PROGRESS;
|
2010-08-01 21:47:32 +08:00
|
|
|
txtid->paused = true;
|
2011-01-11 08:05:48 +08:00
|
|
|
*ssn = txtid->seq_start = txtid->seq_next;
|
2010-09-21 01:35:28 +08:00
|
|
|
|
2011-01-11 08:05:49 +08:00
|
|
|
memset(txtid->tx_buf, 0, sizeof(txtid->tx_buf));
|
|
|
|
txtid->baw_head = txtid->baw_tail = 0;
|
|
|
|
|
2010-09-21 01:35:28 +08:00
|
|
|
return 0;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-07-23 18:02:37 +08:00
|
|
|
void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
|
|
|
struct ath_node *an = (struct ath_node *)sta->drv_priv;
|
|
|
|
struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid);
|
2010-11-07 21:59:39 +08:00
|
|
|
struct ath_txq *txq = txtid->ac->txq;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (txtid->state & AGGR_CLEANUP)
|
2009-07-23 18:02:37 +08:00
|
|
|
return;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (!(txtid->state & AGGR_ADDBA_COMPLETE)) {
|
2009-06-09 17:58:21 +08:00
|
|
|
txtid->state &= ~AGGR_ADDBA_PROGRESS;
|
2009-07-23 18:02:37 +08:00
|
|
|
return;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2010-08-01 21:47:32 +08:00
|
|
|
txtid->paused = true;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-09-20 19:45:38 +08:00
|
|
|
/*
|
|
|
|
* If frames are still being transmitted for this TID, they will be
|
|
|
|
* cleaned up during tx completion. To prevent race conditions, this
|
|
|
|
* TID can only be reused after all in-progress subframes have been
|
|
|
|
* completed.
|
|
|
|
*/
|
|
|
|
if (txtid->baw_head != txtid->baw_tail)
|
2009-01-17 00:08:42 +08:00
|
|
|
txtid->state |= AGGR_CLEANUP;
|
2010-09-20 19:45:38 +08:00
|
|
|
else
|
2009-01-17 00:08:42 +08:00
|
|
|
txtid->state &= ~AGGR_ADDBA_COMPLETE;
|
2010-09-20 19:45:38 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
|
|
|
|
ath_tx_flush_tid(sc, txtid);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-09-29 22:04:26 +08:00
|
|
|
void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
|
|
|
|
struct ath_node *an)
|
2011-04-18 05:28:09 +08:00
|
|
|
{
|
|
|
|
struct ath_atx_tid *tid;
|
|
|
|
struct ath_atx_ac *ac;
|
|
|
|
struct ath_txq *txq;
|
2011-09-29 22:04:26 +08:00
|
|
|
bool buffered;
|
2011-04-18 05:28:09 +08:00
|
|
|
int tidno;
|
|
|
|
|
|
|
|
for (tidno = 0, tid = &an->tid[tidno];
|
|
|
|
tidno < WME_NUM_TID; tidno++, tid++) {
|
|
|
|
|
|
|
|
if (!tid->sched)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ac = tid->ac;
|
|
|
|
txq = ac->txq;
|
|
|
|
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
|
2011-09-29 22:04:26 +08:00
|
|
|
buffered = !skb_queue_empty(&tid->buf_q);
|
2011-04-18 05:28:09 +08:00
|
|
|
|
|
|
|
tid->sched = false;
|
|
|
|
list_del(&tid->list);
|
|
|
|
|
|
|
|
if (ac->sched) {
|
|
|
|
ac->sched = false;
|
|
|
|
list_del(&ac->list);
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
|
2011-09-29 22:04:26 +08:00
|
|
|
ieee80211_sta_set_buffered(sta, tidno, buffered);
|
|
|
|
}
|
2011-04-18 05:28:09 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an)
|
|
|
|
{
|
|
|
|
struct ath_atx_tid *tid;
|
|
|
|
struct ath_atx_ac *ac;
|
|
|
|
struct ath_txq *txq;
|
|
|
|
int tidno;
|
|
|
|
|
|
|
|
for (tidno = 0, tid = &an->tid[tidno];
|
|
|
|
tidno < WME_NUM_TID; tidno++, tid++) {
|
|
|
|
|
|
|
|
ac = tid->ac;
|
|
|
|
txq = ac->txq;
|
|
|
|
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
ac->clear_ps_filter = true;
|
|
|
|
|
2011-08-28 06:32:22 +08:00
|
|
|
if (!skb_queue_empty(&tid->buf_q) && !tid->paused) {
|
2011-04-18 05:28:09 +08:00
|
|
|
ath_tx_queue_tid(txq, tid);
|
|
|
|
ath_txq_schedule(sc, txq);
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
|
|
|
|
{
|
|
|
|
struct ath_atx_tid *txtid;
|
|
|
|
struct ath_node *an;
|
|
|
|
|
|
|
|
an = (struct ath_node *)sta->drv_priv;
|
|
|
|
|
|
|
|
if (sc->sc_flags & SC_OP_TXAGGR) {
|
|
|
|
txtid = ATH_AN_2_TID(an, tid);
|
|
|
|
txtid->baw_size =
|
|
|
|
IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor;
|
|
|
|
txtid->state |= AGGR_ADDBA_COMPLETE;
|
|
|
|
txtid->state &= ~AGGR_ADDBA_PROGRESS;
|
|
|
|
ath_tx_resume_tid(sc, txtid);
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/********************/
|
|
|
|
/* Queue Management */
|
|
|
|
/********************/
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_txq_drain_pending_buffers(struct ath_softc *sc,
|
|
|
|
struct ath_txq *txq)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_atx_ac *ac, *ac_tmp;
|
|
|
|
struct ath_atx_tid *tid, *tid_tmp;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
list_for_each_entry_safe(ac, ac_tmp, &txq->axq_acq, list) {
|
|
|
|
list_del(&ac->list);
|
|
|
|
ac->sched = false;
|
|
|
|
list_for_each_entry_safe(tid, tid_tmp, &ac->tid_q, list) {
|
|
|
|
list_del(&tid->list);
|
|
|
|
tid->sched = false;
|
|
|
|
ath_tid_drain(sc, txq, tid);
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-02-09 15:57:12 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath9k_tx_queue_info qi;
|
2010-11-07 21:59:39 +08:00
|
|
|
static const int subtype_txq_to_hwq[] = {
|
|
|
|
[WME_AC_BE] = ATH_TXQ_AC_BE,
|
|
|
|
[WME_AC_BK] = ATH_TXQ_AC_BK,
|
|
|
|
[WME_AC_VI] = ATH_TXQ_AC_VI,
|
|
|
|
[WME_AC_VO] = ATH_TXQ_AC_VO,
|
|
|
|
};
|
2011-01-10 15:11:52 +08:00
|
|
|
int axq_qnum, i;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
memset(&qi, 0, sizeof(qi));
|
2010-11-07 21:59:39 +08:00
|
|
|
qi.tqi_subtype = subtype_txq_to_hwq[subtype];
|
2009-01-17 00:08:42 +08:00
|
|
|
qi.tqi_aifs = ATH9K_TXQ_USEDEFAULT;
|
|
|
|
qi.tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
|
|
|
|
qi.tqi_cwmax = ATH9K_TXQ_USEDEFAULT;
|
|
|
|
qi.tqi_physCompBuf = 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* Enable interrupts only for EOL and DESC conditions.
|
|
|
|
* We mark tx descriptors to receive a DESC interrupt
|
|
|
|
* when a tx queue gets deep; otherwise waiting for the
|
|
|
|
* EOL to reap descriptors. Note that this is done to
|
|
|
|
* reduce interrupt load and this only defers reaping
|
|
|
|
* descriptors, never transmitting frames. Aside from
|
|
|
|
* reducing interrupts this also permits more concurrency.
|
|
|
|
* The only potential downside is if the tx queue backs
|
|
|
|
* up in which case the top half of the kernel may backup
|
|
|
|
* due to a lack of tx descriptors.
|
|
|
|
*
|
|
|
|
* The UAPSD queue is an exception, since we take a desc-
|
|
|
|
* based intr on the EOSP frames.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2010-04-16 05:39:40 +08:00
|
|
|
if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
|
|
|
|
qi.tqi_qflags = TXQ_FLAG_TXOKINT_ENABLE |
|
|
|
|
TXQ_FLAG_TXERRINT_ENABLE;
|
|
|
|
} else {
|
|
|
|
if (qtype == ATH9K_TX_QUEUE_UAPSD)
|
|
|
|
qi.tqi_qflags = TXQ_FLAG_TXDESCINT_ENABLE;
|
|
|
|
else
|
|
|
|
qi.tqi_qflags = TXQ_FLAG_TXEOLINT_ENABLE |
|
|
|
|
TXQ_FLAG_TXDESCINT_ENABLE;
|
|
|
|
}
|
2011-01-10 15:11:52 +08:00
|
|
|
axq_qnum = ath9k_hw_setuptxqueue(ah, qtype, &qi);
|
|
|
|
if (axq_qnum == -1) {
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* NB: don't print a message, this happens
|
|
|
|
* normally on parts with too few tx queues
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-01-17 00:08:42 +08:00
|
|
|
return NULL;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2011-01-10 15:11:52 +08:00
|
|
|
if (!ATH_TXQ_SETUP(sc, axq_qnum)) {
|
|
|
|
struct ath_txq *txq = &sc->tx.txq[axq_qnum];
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-10 15:11:52 +08:00
|
|
|
txq->axq_qnum = axq_qnum;
|
|
|
|
txq->mac80211_qnum = -1;
|
2009-01-17 00:08:42 +08:00
|
|
|
txq->axq_link = NULL;
|
|
|
|
INIT_LIST_HEAD(&txq->axq_q);
|
|
|
|
INIT_LIST_HEAD(&txq->axq_acq);
|
|
|
|
spin_lock_init(&txq->axq_lock);
|
|
|
|
txq->axq_depth = 0;
|
2010-12-17 07:57:00 +08:00
|
|
|
txq->axq_ampdu_depth = 0;
|
2009-07-15 08:17:09 +08:00
|
|
|
txq->axq_tx_inprogress = false;
|
2011-01-10 15:11:52 +08:00
|
|
|
sc->tx.txqsetup |= 1<<axq_qnum;
|
2010-04-16 05:39:36 +08:00
|
|
|
|
|
|
|
txq->txq_headidx = txq->txq_tailidx = 0;
|
|
|
|
for (i = 0; i < ATH_TXFIFO_DEPTH; i++)
|
|
|
|
INIT_LIST_HEAD(&txq->txq_fifo[i]);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2011-01-10 15:11:52 +08:00
|
|
|
return &sc->tx.txq[axq_qnum];
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
int ath_txq_update(struct ath_softc *sc, int qnum,
|
|
|
|
struct ath9k_tx_queue_info *qinfo)
|
|
|
|
{
|
2009-02-09 15:57:12 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-01-17 00:08:42 +08:00
|
|
|
int error = 0;
|
|
|
|
struct ath9k_tx_queue_info qi;
|
|
|
|
|
|
|
|
if (qnum == sc->beacon.beaconq) {
|
|
|
|
/*
|
|
|
|
* XXX: for beacon queue, we just save the parameter.
|
|
|
|
* It will be picked up by ath_beaconq_config when
|
|
|
|
* it's necessary.
|
|
|
|
*/
|
|
|
|
sc->beacon.beacon_qi = *qinfo;
|
2008-08-04 15:16:41 +08:00
|
|
|
return 0;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-09-14 14:28:00 +08:00
|
|
|
BUG_ON(sc->tx.txq[qnum].axq_qnum != qnum);
|
2009-01-17 00:08:42 +08:00
|
|
|
|
|
|
|
ath9k_hw_get_txq_props(ah, qnum, &qi);
|
|
|
|
qi.tqi_aifs = qinfo->tqi_aifs;
|
|
|
|
qi.tqi_cwmin = qinfo->tqi_cwmin;
|
|
|
|
qi.tqi_cwmax = qinfo->tqi_cwmax;
|
|
|
|
qi.tqi_burstTime = qinfo->tqi_burstTime;
|
|
|
|
qi.tqi_readyTime = qinfo->tqi_readyTime;
|
|
|
|
|
|
|
|
if (!ath9k_hw_set_txq_props(ah, qnum, &qi)) {
|
2010-12-03 11:12:36 +08:00
|
|
|
ath_err(ath9k_hw_common(sc->sc_ah),
|
|
|
|
"Unable to update hardware queue %u!\n", qnum);
|
2009-01-17 00:08:42 +08:00
|
|
|
error = -EIO;
|
|
|
|
} else {
|
|
|
|
ath9k_hw_resettxqueue(ah, qnum);
|
|
|
|
}
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ath_cabq_update(struct ath_softc *sc)
|
|
|
|
{
|
|
|
|
struct ath9k_tx_queue_info qi;
|
2011-02-08 08:10:39 +08:00
|
|
|
struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
|
2009-01-17 00:08:42 +08:00
|
|
|
int qnum = sc->beacon.cabq->axq_qnum;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
ath9k_hw_get_txq_props(sc->sc_ah, qnum, &qi);
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* Ensure the readytime % is within the bounds.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-02-09 15:57:03 +08:00
|
|
|
if (sc->config.cabqReadytime < ATH9K_READY_TIME_LO_BOUND)
|
|
|
|
sc->config.cabqReadytime = ATH9K_READY_TIME_LO_BOUND;
|
|
|
|
else if (sc->config.cabqReadytime > ATH9K_READY_TIME_HI_BOUND)
|
|
|
|
sc->config.cabqReadytime = ATH9K_READY_TIME_HI_BOUND;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-02-08 08:10:39 +08:00
|
|
|
qi.tqi_readyTime = (cur_conf->beacon_interval *
|
2009-02-17 18:06:35 +08:00
|
|
|
sc->config.cabqReadytime) / 100;
|
2009-01-17 00:08:42 +08:00
|
|
|
ath_txq_update(sc, qnum, &qi);
|
|
|
|
|
|
|
|
return 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2010-12-17 07:57:00 +08:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
static void ath_drain_txq_list(struct ath_softc *sc, struct ath_txq *txq,
|
|
|
|
struct list_head *list, bool retry_tx)
|
2011-07-17 14:13:02 +08:00
|
|
|
__releases(txq->axq_lock)
|
|
|
|
__acquires(txq->axq_lock)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_buf *bf, *lastbf;
|
|
|
|
struct list_head bf_head;
|
2010-03-30 11:07:11 +08:00
|
|
|
struct ath_tx_status ts;
|
|
|
|
|
|
|
|
memset(&ts, 0, sizeof(ts));
|
2011-10-07 08:28:15 +08:00
|
|
|
ts.ts_status = ATH9K_TX_FLUSH;
|
2009-01-17 00:08:42 +08:00
|
|
|
INIT_LIST_HEAD(&bf_head);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
while (!list_empty(list)) {
|
|
|
|
bf = list_first_entry(list, struct ath_buf, list);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (bf->bf_stale) {
|
|
|
|
list_del(&bf->list);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
ath_tx_return_buffer(sc, bf);
|
|
|
|
continue;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
lastbf = bf->bf_lastbf;
|
2011-05-19 18:20:25 +08:00
|
|
|
list_cut_position(&bf_head, list, &lastbf->list);
|
2010-04-16 05:39:36 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
txq->axq_depth--;
|
2010-12-17 07:57:00 +08:00
|
|
|
if (bf_is_ampdu_not_probing(bf))
|
|
|
|
txq->axq_ampdu_depth--;
|
2009-01-17 00:08:42 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2009-01-17 00:08:42 +08:00
|
|
|
if (bf_isampdu(bf))
|
2010-11-14 22:20:09 +08:00
|
|
|
ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0,
|
|
|
|
retry_tx);
|
2009-01-17 00:08:42 +08:00
|
|
|
else
|
2010-03-30 11:07:11 +08:00
|
|
|
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
|
2011-05-19 18:20:25 +08:00
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2011-05-19 18:20:25 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
/*
|
|
|
|
* Drain a given TX queue (could be Beacon or Data)
|
|
|
|
*
|
|
|
|
* This assumes output has been stopped and
|
|
|
|
* we do not need to block ath_tx_tasklet.
|
|
|
|
*/
|
|
|
|
void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx)
|
|
|
|
{
|
2009-07-15 08:17:09 +08:00
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2010-04-16 05:39:36 +08:00
|
|
|
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
|
2011-05-19 18:20:25 +08:00
|
|
|
int idx = txq->txq_tailidx;
|
2010-04-16 05:39:36 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
while (!list_empty(&txq->txq_fifo[idx])) {
|
|
|
|
ath_drain_txq_list(sc, txq, &txq->txq_fifo[idx],
|
|
|
|
retry_tx);
|
|
|
|
|
|
|
|
INCR(idx, ATH_TXFIFO_DEPTH);
|
2010-04-16 05:39:36 +08:00
|
|
|
}
|
2011-05-19 18:20:25 +08:00
|
|
|
txq->txq_tailidx = idx;
|
2010-04-16 05:39:36 +08:00
|
|
|
}
|
2010-10-27 08:15:05 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
txq->axq_link = NULL;
|
|
|
|
txq->axq_tx_inprogress = false;
|
|
|
|
ath_drain_txq_list(sc, txq, &txq->axq_q, retry_tx);
|
|
|
|
|
2010-10-27 08:15:05 +08:00
|
|
|
/* flush any pending frames if aggregation is enabled */
|
2011-05-19 18:20:25 +08:00
|
|
|
if ((sc->sc_flags & SC_OP_TXAGGR) && !retry_tx)
|
|
|
|
ath_txq_drain_pending_buffers(sc, txq);
|
|
|
|
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2010-12-06 03:17:53 +08:00
|
|
|
bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-02-09 15:57:12 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
2009-01-17 00:08:47 +08:00
|
|
|
struct ath_txq *txq;
|
2011-10-07 08:28:12 +08:00
|
|
|
int i;
|
|
|
|
u32 npend = 0;
|
2009-01-17 00:08:47 +08:00
|
|
|
|
|
|
|
if (sc->sc_flags & SC_OP_INVALID)
|
2010-12-06 03:17:53 +08:00
|
|
|
return true;
|
2009-01-17 00:08:47 +08:00
|
|
|
|
2011-03-12 04:38:18 +08:00
|
|
|
ath9k_hw_abort_tx_dma(ah);
|
2009-01-17 00:08:47 +08:00
|
|
|
|
2011-03-12 04:38:18 +08:00
|
|
|
/* Check if any queue remains active */
|
2009-01-17 00:08:47 +08:00
|
|
|
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
|
2011-03-12 04:38:18 +08:00
|
|
|
if (!ATH_TXQ_SETUP(sc, i))
|
|
|
|
continue;
|
|
|
|
|
2011-10-07 08:28:12 +08:00
|
|
|
if (ath9k_hw_numtxpending(ah, sc->tx.txq[i].axq_qnum))
|
|
|
|
npend |= BIT(i);
|
2009-01-17 00:08:47 +08:00
|
|
|
}
|
|
|
|
|
2010-12-06 03:17:53 +08:00
|
|
|
if (npend)
|
2011-10-07 08:28:12 +08:00
|
|
|
ath_err(common, "Failed to stop TX DMA, queues=0x%03x!\n", npend);
|
2009-01-17 00:08:47 +08:00
|
|
|
|
|
|
|
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
|
2011-01-25 02:23:14 +08:00
|
|
|
if (!ATH_TXQ_SETUP(sc, i))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The caller will resume queues with ieee80211_wake_queues.
|
|
|
|
* Mark the queue as not stopped to prevent ath_tx_complete
|
|
|
|
* from waking the queue too early.
|
|
|
|
*/
|
|
|
|
txq = &sc->tx.txq[i];
|
|
|
|
txq->stopped = false;
|
|
|
|
ath_draintxq(sc, txq, retry_tx);
|
2009-01-17 00:08:47 +08:00
|
|
|
}
|
2010-12-06 03:17:53 +08:00
|
|
|
|
|
|
|
return !npend;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:47 +08:00
|
|
|
void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
2009-01-17 00:08:47 +08:00
|
|
|
ath9k_hw_releasetxqueue(sc->sc_ah, txq->axq_qnum);
|
|
|
|
sc->tx.txqsetup &= ~(1<<txq->axq_qnum);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
/* For each axq_acq entry, for each tid, try to schedule packets
|
|
|
|
* for transmit until ampdu_depth has reached min Q depth.
|
|
|
|
*/
|
2009-01-17 00:08:42 +08:00
|
|
|
void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
|
|
|
|
{
|
2011-01-19 09:30:00 +08:00
|
|
|
struct ath_atx_ac *ac, *ac_tmp, *last_ac;
|
|
|
|
struct ath_atx_tid *tid, *last_tid;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-09-03 07:40:25 +08:00
|
|
|
if (work_pending(&sc->hw_reset_work) || list_empty(&txq->axq_acq) ||
|
2011-01-15 21:30:14 +08:00
|
|
|
txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
|
2009-01-17 00:08:42 +08:00
|
|
|
return;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac, list);
|
2011-01-19 09:30:00 +08:00
|
|
|
last_ac = list_entry(txq->axq_acq.prev, struct ath_atx_ac, list);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
list_for_each_entry_safe(ac, ac_tmp, &txq->axq_acq, list) {
|
|
|
|
last_tid = list_entry(ac->tid_q.prev, struct ath_atx_tid, list);
|
|
|
|
list_del(&ac->list);
|
|
|
|
ac->sched = false;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
while (!list_empty(&ac->tid_q)) {
|
|
|
|
tid = list_first_entry(&ac->tid_q, struct ath_atx_tid,
|
|
|
|
list);
|
|
|
|
list_del(&tid->list);
|
|
|
|
tid->sched = false;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
if (tid->paused)
|
|
|
|
continue;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
ath_tx_sched_aggr(sc, txq, tid);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
/*
|
|
|
|
* add tid to round-robin queue if more frames
|
|
|
|
* are pending for the tid
|
|
|
|
*/
|
2011-08-28 06:32:22 +08:00
|
|
|
if (!skb_queue_empty(&tid->buf_q))
|
2011-01-19 09:30:00 +08:00
|
|
|
ath_tx_queue_tid(txq, tid);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
if (tid == last_tid ||
|
|
|
|
txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
|
|
|
|
break;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-01-19 09:30:00 +08:00
|
|
|
if (!list_empty(&ac->tid_q)) {
|
|
|
|
if (!ac->sched) {
|
|
|
|
ac->sched = true;
|
|
|
|
list_add_tail(&ac->list, &txq->axq_acq);
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2011-01-19 09:30:00 +08:00
|
|
|
|
|
|
|
if (ac == last_ac ||
|
|
|
|
txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
|
|
|
|
return;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/***********/
|
|
|
|
/* TX, DMA */
|
|
|
|
/***********/
|
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* Insert a chain of ath_buf (descriptors) on a txq and
|
|
|
|
* assume the descriptors are already chained together by caller.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
|
2011-05-19 18:20:25 +08:00
|
|
|
struct list_head *head, bool internal)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-02-09 15:57:12 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
2011-05-19 18:20:25 +08:00
|
|
|
struct ath_buf *bf, *bf_last;
|
|
|
|
bool puttxbuf = false;
|
|
|
|
bool edma;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* Insert the frame on the outbound list and
|
|
|
|
* pass it on to the hardware.
|
|
|
|
*/
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (list_empty(head))
|
|
|
|
return;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
|
2009-01-17 00:08:42 +08:00
|
|
|
bf = list_first_entry(head, struct ath_buf, list);
|
2011-05-19 18:20:25 +08:00
|
|
|
bf_last = list_entry(head->prev, struct ath_buf, list);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_QUEUE,
|
|
|
|
"qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (edma && list_empty(&txq->txq_fifo[txq->txq_headidx])) {
|
|
|
|
list_splice_tail_init(head, &txq->txq_fifo[txq->txq_headidx]);
|
2010-04-16 05:39:36 +08:00
|
|
|
INCR(txq->txq_headidx, ATH_TXFIFO_DEPTH);
|
2011-05-19 18:20:25 +08:00
|
|
|
puttxbuf = true;
|
2009-01-17 00:08:42 +08:00
|
|
|
} else {
|
2010-04-16 05:39:36 +08:00
|
|
|
list_splice_tail_init(head, &txq->axq_q);
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (txq->axq_link) {
|
|
|
|
ath9k_hw_set_desc_link(ah, txq->axq_link, bf->bf_daddr);
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_XMIT,
|
|
|
|
"link[%u] (%p)=%llx (%p)\n",
|
|
|
|
txq->axq_qnum, txq->axq_link,
|
|
|
|
ito64(bf->bf_daddr), bf->bf_desc);
|
2011-05-19 18:20:25 +08:00
|
|
|
} else if (!edma)
|
|
|
|
puttxbuf = true;
|
|
|
|
|
|
|
|
txq->axq_link = bf_last->bf_desc;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (puttxbuf) {
|
|
|
|
TX_STAT_INC(txq->axq_qnum, puttxbuf);
|
|
|
|
ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
|
|
|
|
ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
|
|
|
|
txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!edma) {
|
2011-01-25 02:11:54 +08:00
|
|
|
TX_STAT_INC(txq->axq_qnum, txstart);
|
2010-04-16 05:39:36 +08:00
|
|
|
ath9k_hw_txstart(ah, txq->axq_qnum);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2011-05-19 18:20:25 +08:00
|
|
|
|
|
|
|
if (!internal) {
|
|
|
|
txq->axq_depth++;
|
|
|
|
if (bf_is_ampdu_not_probing(bf))
|
|
|
|
txq->axq_ampdu_depth++;
|
|
|
|
}
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
|
2011-08-28 06:32:25 +08:00
|
|
|
struct sk_buff *skb, struct ath_tx_control *txctl)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2011-08-28 06:32:25 +08:00
|
|
|
struct ath_frame_info *fi = get_frame_info(skb);
|
2010-11-14 22:20:12 +08:00
|
|
|
struct list_head bf_head;
|
2011-08-28 06:32:25 +08:00
|
|
|
struct ath_buf *bf;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* Do not queue to h/w when any of the following conditions is true:
|
|
|
|
* - there are pending frames in software queue
|
|
|
|
* - the TID is currently paused for ADDBA/BAR request
|
|
|
|
* - seqno is not within block-ack window
|
|
|
|
* - h/w queue depth exceeds low water mark
|
|
|
|
*/
|
2011-08-28 06:32:22 +08:00
|
|
|
if (!skb_queue_empty(&tid->buf_q) || tid->paused ||
|
2011-08-28 06:32:25 +08:00
|
|
|
!BAW_WITHIN(tid->seq_start, tid->baw_size, tid->seq_next) ||
|
2010-12-17 07:57:00 +08:00
|
|
|
txctl->txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) {
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* Add this frame to software queue for scheduling later
|
|
|
|
* for aggregation.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2011-01-10 15:11:48 +08:00
|
|
|
TX_STAT_INC(txctl->txq->axq_qnum, a_queued_sw);
|
2011-08-28 06:32:25 +08:00
|
|
|
__skb_queue_tail(&tid->buf_q, skb);
|
2011-08-11 05:23:35 +08:00
|
|
|
if (!txctl->an || !txctl->an->sleeping)
|
|
|
|
ath_tx_queue_tid(txctl->txq, tid);
|
2009-01-17 00:08:42 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-08-28 06:32:25 +08:00
|
|
|
bf = ath_tx_setup_buffer(sc, txctl->txq, tid, skb);
|
|
|
|
if (!bf)
|
|
|
|
return;
|
|
|
|
|
2011-09-15 03:24:17 +08:00
|
|
|
bf->bf_state.bf_type = BUF_AMPDU;
|
2010-11-14 22:20:12 +08:00
|
|
|
INIT_LIST_HEAD(&bf_head);
|
|
|
|
list_add(&bf->list, &bf_head);
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/* Add sub-frame to BAW */
|
2011-08-28 06:32:25 +08:00
|
|
|
ath_tx_addto_baw(sc, tid, bf->bf_state.seqno);
|
2009-01-17 00:08:42 +08:00
|
|
|
|
|
|
|
/* Queue to h/w without aggregation */
|
2011-01-10 15:11:48 +08:00
|
|
|
TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw);
|
2009-01-17 00:08:53 +08:00
|
|
|
bf->bf_lastbf = bf;
|
2011-09-15 03:24:22 +08:00
|
|
|
ath_tx_fill_desc(sc, bf, txctl->txq, fi->framelen);
|
2011-05-19 18:20:25 +08:00
|
|
|
ath_tx_txqaddbuf(sc, txctl->txq, &bf_head, false);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
|
2010-11-11 10:18:37 +08:00
|
|
|
static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
|
2011-08-28 06:32:25 +08:00
|
|
|
struct ath_atx_tid *tid, struct sk_buff *skb)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
2011-08-28 06:32:25 +08:00
|
|
|
struct ath_frame_info *fi = get_frame_info(skb);
|
|
|
|
struct list_head bf_head;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_buf *bf;
|
|
|
|
|
2011-08-28 06:32:25 +08:00
|
|
|
bf = fi->bf;
|
|
|
|
if (!bf)
|
|
|
|
bf = ath_tx_setup_buffer(sc, txq, tid, skb);
|
|
|
|
|
|
|
|
if (!bf)
|
|
|
|
return;
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&bf_head);
|
|
|
|
list_add_tail(&bf->list, &bf_head);
|
2011-09-15 03:24:17 +08:00
|
|
|
bf->bf_state.bf_type = 0;
|
2009-01-17 00:08:42 +08:00
|
|
|
|
|
|
|
/* update starting sequence number for subsequent ADDBA request */
|
2010-11-11 10:18:37 +08:00
|
|
|
if (tid)
|
|
|
|
INCR(tid->seq_start, IEEE80211_SEQ_MAX);
|
2009-01-17 00:08:42 +08:00
|
|
|
|
2009-01-17 00:08:53 +08:00
|
|
|
bf->bf_lastbf = bf;
|
2011-09-15 03:24:22 +08:00
|
|
|
ath_tx_fill_desc(sc, bf, txq, fi->framelen);
|
2011-08-28 06:32:25 +08:00
|
|
|
ath_tx_txqaddbuf(sc, txq, &bf_head, false);
|
2009-07-27 14:38:16 +08:00
|
|
|
TX_STAT_INC(txq->axq_qnum, queued);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
|
2010-11-14 22:20:13 +08:00
|
|
|
static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb,
|
|
|
|
int framelen)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ieee80211_sta *sta = tx_info->control.sta;
|
|
|
|
struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
|
2011-08-28 06:32:23 +08:00
|
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ath_frame_info *fi = get_frame_info(skb);
|
2011-04-18 05:28:10 +08:00
|
|
|
struct ath_node *an = NULL;
|
2010-11-14 22:20:13 +08:00
|
|
|
enum ath9k_key_type keytype;
|
2009-01-17 00:08:42 +08:00
|
|
|
|
2010-11-14 22:20:13 +08:00
|
|
|
keytype = ath9k_cmn_get_hw_crypto_keytype(skb);
|
2009-01-17 00:08:42 +08:00
|
|
|
|
2011-04-18 05:28:10 +08:00
|
|
|
if (sta)
|
|
|
|
an = (struct ath_node *) sta->drv_priv;
|
|
|
|
|
2010-11-14 22:20:13 +08:00
|
|
|
memset(fi, 0, sizeof(*fi));
|
|
|
|
if (hw_key)
|
|
|
|
fi->keyix = hw_key->hw_key_idx;
|
2011-04-18 05:28:10 +08:00
|
|
|
else if (an && ieee80211_is_data(hdr->frame_control) && an->ps_key > 0)
|
|
|
|
fi->keyix = an->ps_key;
|
2010-11-14 22:20:13 +08:00
|
|
|
else
|
|
|
|
fi->keyix = ATH9K_TXKEYIX_INVALID;
|
|
|
|
fi->keytype = keytype;
|
|
|
|
fi->framelen = framelen;
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
|
|
|
|
2010-11-23 23:12:27 +08:00
|
|
|
u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate)
|
|
|
|
{
|
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
struct ath9k_channel *curchan = ah->curchan;
|
2011-08-13 12:58:14 +08:00
|
|
|
if ((ah->caps.hw_caps & ATH9K_HW_CAP_APM) &&
|
|
|
|
(curchan->channelFlags & CHANNEL_5GHZ) &&
|
|
|
|
(chainmask == 0x7) && (rate < 0x90))
|
2010-11-23 23:12:27 +08:00
|
|
|
return 0x3;
|
|
|
|
else
|
|
|
|
return chainmask;
|
|
|
|
}
|
|
|
|
|
2011-08-28 06:32:25 +08:00
|
|
|
/*
|
|
|
|
* Assign a descriptor (and sequence number if necessary,
|
|
|
|
* and map buffer for DMA. Frees skb on error
|
|
|
|
*/
|
2011-08-28 06:32:24 +08:00
|
|
|
static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
|
2010-11-14 22:20:12 +08:00
|
|
|
struct ath_txq *txq,
|
2011-08-28 06:32:24 +08:00
|
|
|
struct ath_atx_tid *tid,
|
2010-11-14 22:20:13 +08:00
|
|
|
struct sk_buff *skb)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2010-11-11 10:18:37 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ath_frame_info *fi = get_frame_info(skb);
|
2011-08-28 06:32:24 +08:00
|
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
2010-11-11 10:18:37 +08:00
|
|
|
struct ath_buf *bf;
|
2011-08-28 06:32:24 +08:00
|
|
|
u16 seqno;
|
2010-11-11 10:18:37 +08:00
|
|
|
|
|
|
|
bf = ath_tx_get_buffer(sc);
|
|
|
|
if (!bf) {
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_XMIT, "TX buffers are full\n");
|
2011-08-28 06:32:25 +08:00
|
|
|
goto error;
|
2010-11-11 10:18:37 +08:00
|
|
|
}
|
2008-08-22 22:31:33 +08:00
|
|
|
|
2008-10-29 12:44:26 +08:00
|
|
|
ATH_TXBUF_RESET(bf);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-08-28 06:32:24 +08:00
|
|
|
if (tid) {
|
|
|
|
seqno = tid->seq_next;
|
|
|
|
hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT);
|
|
|
|
INCR(tid->seq_next, IEEE80211_SEQ_MAX);
|
|
|
|
bf->bf_state.seqno = seqno;
|
|
|
|
}
|
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
bf->bf_mpdu = skb;
|
2008-12-03 19:35:29 +08:00
|
|
|
|
2010-10-15 03:45:29 +08:00
|
|
|
bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
|
|
|
|
skb->len, DMA_TO_DEVICE);
|
|
|
|
if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
|
2008-12-03 19:35:29 +08:00
|
|
|
bf->bf_mpdu = NULL;
|
2010-10-15 03:45:30 +08:00
|
|
|
bf->bf_buf_addr = 0;
|
2010-12-03 11:12:36 +08:00
|
|
|
ath_err(ath9k_hw_common(sc->sc_ah),
|
|
|
|
"dma_mapping_error() on TX\n");
|
2010-11-11 10:18:37 +08:00
|
|
|
ath_tx_return_buffer(sc, bf);
|
2011-08-28 06:32:25 +08:00
|
|
|
goto error;
|
2008-12-03 19:35:29 +08:00
|
|
|
}
|
|
|
|
|
2011-08-28 06:32:22 +08:00
|
|
|
fi->bf = bf;
|
2010-11-14 22:20:12 +08:00
|
|
|
|
|
|
|
return bf;
|
2011-08-28 06:32:25 +08:00
|
|
|
|
|
|
|
error:
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
return NULL;
|
2010-11-14 22:20:12 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* FIXME: tx power */
|
2011-08-28 06:32:25 +08:00
|
|
|
static void ath_tx_start_dma(struct ath_softc *sc, struct sk_buff *skb,
|
2010-11-14 22:20:12 +08:00
|
|
|
struct ath_tx_control *txctl)
|
|
|
|
{
|
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
|
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
2010-12-11 04:16:46 +08:00
|
|
|
struct ath_atx_tid *tid = NULL;
|
2011-08-28 06:32:24 +08:00
|
|
|
struct ath_buf *bf;
|
2010-11-14 22:20:12 +08:00
|
|
|
u8 tidno;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2008-10-29 12:44:26 +08:00
|
|
|
spin_lock_bh(&txctl->txq->axq_lock);
|
2011-03-21 20:57:21 +08:00
|
|
|
if ((sc->sc_flags & SC_OP_TXAGGR) && txctl->an &&
|
|
|
|
ieee80211_is_data_qos(hdr->frame_control)) {
|
2010-11-14 22:20:02 +08:00
|
|
|
tidno = ieee80211_get_qos_ctl(hdr)[0] &
|
|
|
|
IEEE80211_QOS_CTL_TID_MASK;
|
2010-11-14 22:20:13 +08:00
|
|
|
tid = ATH_AN_2_TID(txctl->an, tidno);
|
2010-11-14 22:20:02 +08:00
|
|
|
|
2010-11-07 21:59:39 +08:00
|
|
|
WARN_ON(tid->ac->txq != txctl->txq);
|
2010-12-11 04:16:46 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
|
2010-11-14 22:20:12 +08:00
|
|
|
/*
|
|
|
|
* Try aggregation if it's a unicast data frame
|
|
|
|
* and the destination is HT capable.
|
|
|
|
*/
|
2011-08-28 06:32:25 +08:00
|
|
|
ath_tx_send_ampdu(sc, tid, skb, txctl);
|
2008-08-04 15:16:41 +08:00
|
|
|
} else {
|
2011-08-28 06:32:25 +08:00
|
|
|
bf = ath_tx_setup_buffer(sc, txctl->txq, tid, skb);
|
|
|
|
if (!bf)
|
|
|
|
goto out;
|
2010-11-14 22:20:12 +08:00
|
|
|
|
2010-11-11 10:18:37 +08:00
|
|
|
bf->bf_state.bfs_paprd = txctl->paprd;
|
|
|
|
|
2011-02-04 21:08:23 +08:00
|
|
|
if (txctl->paprd)
|
|
|
|
bf->bf_state.bfs_paprd_timestamp = jiffies;
|
|
|
|
|
2011-08-28 06:32:25 +08:00
|
|
|
ath_tx_send_normal(sc, txctl->txq, tid, skb);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2011-08-28 06:32:24 +08:00
|
|
|
out:
|
2008-10-29 12:44:26 +08:00
|
|
|
spin_unlock_bh(&txctl->txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2008-12-03 19:35:29 +08:00
|
|
|
/* Upon failure caller should free skb */
|
2009-03-04 01:23:29 +08:00
|
|
|
int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
|
2008-10-29 12:44:26 +08:00
|
|
|
struct ath_tx_control *txctl)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2010-11-14 22:20:10 +08:00
|
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
|
|
|
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
2010-11-14 22:20:13 +08:00
|
|
|
struct ieee80211_sta *sta = info->control.sta;
|
2011-05-11 02:52:22 +08:00
|
|
|
struct ieee80211_vif *vif = info->control.vif;
|
2011-01-25 02:23:18 +08:00
|
|
|
struct ath_softc *sc = hw->priv;
|
2010-06-02 03:33:13 +08:00
|
|
|
struct ath_txq *txq = txctl->txq;
|
2009-12-12 07:22:35 +08:00
|
|
|
int padpos, padsize;
|
2010-11-14 22:20:12 +08:00
|
|
|
int frmlen = skb->len + FCS_LEN;
|
2010-11-14 22:20:10 +08:00
|
|
|
int q;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-12-07 13:13:49 +08:00
|
|
|
/* NOTE: sta can be NULL according to net/mac80211.h */
|
|
|
|
if (sta)
|
|
|
|
txctl->an = (struct ath_node *)sta->drv_priv;
|
|
|
|
|
2010-11-14 22:20:12 +08:00
|
|
|
if (info->control.hw_key)
|
|
|
|
frmlen += info->control.hw_key->icv_len;
|
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-01-17 00:08:42 +08:00
|
|
|
* As a temporary workaround, assign seq# here; this will likely need
|
|
|
|
* to be cleaned up to work better with Beacon transmission and virtual
|
|
|
|
* BSSes.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-01-17 00:08:42 +08:00
|
|
|
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
|
|
|
|
if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
|
|
|
|
sc->tx.seq_no += 0x10;
|
|
|
|
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
|
|
|
|
hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2011-09-20 03:42:31 +08:00
|
|
|
/* Add the padding after the header if this is not already done */
|
|
|
|
padpos = ath9k_cmn_padpos(hdr->frame_control);
|
|
|
|
padsize = padpos & 3;
|
|
|
|
if (padsize && skb->len > padpos) {
|
|
|
|
if (skb_headroom(skb) < padsize)
|
|
|
|
return -ENOMEM;
|
2010-11-14 22:20:10 +08:00
|
|
|
|
2011-09-20 03:42:31 +08:00
|
|
|
skb_push(skb, padsize);
|
|
|
|
memmove(skb->data, skb->data + padsize, padpos);
|
2011-09-15 16:03:12 +08:00
|
|
|
hdr = (struct ieee80211_hdr *) skb->data;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2011-05-11 02:52:22 +08:00
|
|
|
if ((vif && vif->type != NL80211_IFTYPE_AP &&
|
|
|
|
vif->type != NL80211_IFTYPE_AP_VLAN) ||
|
|
|
|
!ieee80211_is_data(hdr->frame_control))
|
|
|
|
info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
|
|
|
|
|
2010-11-14 22:20:13 +08:00
|
|
|
setup_frame_info(hw, skb, frmlen);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* At this point, the vif, hw_key and sta pointers in the tx control
|
|
|
|
* info are no longer valid (overwritten by the ath_frame_info data.
|
|
|
|
*/
|
|
|
|
|
2010-11-14 22:20:10 +08:00
|
|
|
q = skb_get_queue_mapping(skb);
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
if (txq == sc->tx.txq_map[q] &&
|
|
|
|
++txq->pending_frames > ATH_MAX_QDEPTH && !txq->stopped) {
|
2011-01-25 02:23:16 +08:00
|
|
|
ieee80211_stop_queue(sc->hw, q);
|
2010-11-14 22:20:10 +08:00
|
|
|
txq->stopped = 1;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2010-11-14 22:20:10 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-08-28 06:32:25 +08:00
|
|
|
ath_tx_start_dma(sc, skb, txctl);
|
|
|
|
return 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*****************/
|
|
|
|
/* TX Completion */
|
|
|
|
/*****************/
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
|
2011-07-29 20:08:14 +08:00
|
|
|
int tx_flags, struct ath_txq *txq)
|
2008-10-29 12:44:26 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ieee80211_hw *hw = sc->hw;
|
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
2009-12-12 07:22:35 +08:00
|
|
|
struct ieee80211_hdr * hdr = (struct ieee80211_hdr *)skb->data;
|
2010-06-12 12:33:55 +08:00
|
|
|
int q, padpos, padsize;
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb);
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2009-03-20 17:57:50 +08:00
|
|
|
if (tx_flags & ATH_TX_BAR)
|
2009-01-17 00:08:42 +08:00
|
|
|
tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
|
|
|
|
|
2011-09-15 03:24:16 +08:00
|
|
|
if (!(tx_flags & ATH_TX_ERROR))
|
2009-01-17 00:08:42 +08:00
|
|
|
/* Frame was ACKed */
|
|
|
|
tx_info->flags |= IEEE80211_TX_STAT_ACK;
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2011-09-20 03:42:31 +08:00
|
|
|
padpos = ath9k_cmn_padpos(hdr->frame_control);
|
|
|
|
padsize = padpos & 3;
|
|
|
|
if (padsize && skb->len>padpos+padsize) {
|
|
|
|
/*
|
|
|
|
* Remove MAC header padding before giving the frame back to
|
|
|
|
* mac80211.
|
|
|
|
*/
|
|
|
|
memmove(skb->data + padsize, skb->data, padpos);
|
|
|
|
skb_pull(skb, padsize);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-10-29 12:44:26 +08:00
|
|
|
|
2010-01-08 13:06:05 +08:00
|
|
|
if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) {
|
|
|
|
sc->ps_flags &= ~PS_WAIT_FOR_TX_ACK;
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_PS,
|
|
|
|
"Going back to sleep after having received TX status (0x%lx)\n",
|
2010-01-08 13:06:05 +08:00
|
|
|
sc->ps_flags & (PS_WAIT_FOR_BEACON |
|
|
|
|
PS_WAIT_FOR_CAB |
|
|
|
|
PS_WAIT_FOR_PSPOLL_DATA |
|
|
|
|
PS_WAIT_FOR_TX_ACK));
|
2009-05-19 22:01:38 +08:00
|
|
|
}
|
|
|
|
|
2011-01-25 02:23:16 +08:00
|
|
|
q = skb_get_queue_mapping(skb);
|
|
|
|
if (txq == sc->tx.txq_map[q]) {
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
if (WARN_ON(--txq->pending_frames < 0))
|
|
|
|
txq->pending_frames = 0;
|
2011-01-25 02:23:14 +08:00
|
|
|
|
2011-01-25 02:23:16 +08:00
|
|
|
if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
|
|
|
|
ieee80211_wake_queue(sc->hw, q);
|
|
|
|
txq->stopped = 0;
|
2010-11-07 21:59:39 +08:00
|
|
|
}
|
2011-01-25 02:23:16 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2010-06-12 12:33:55 +08:00
|
|
|
}
|
2011-01-25 02:23:16 +08:00
|
|
|
|
|
|
|
ieee80211_tx_status(hw, skb);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
|
2010-03-30 11:07:11 +08:00
|
|
|
struct ath_txq *txq, struct list_head *bf_q,
|
|
|
|
struct ath_tx_status *ts, int txok, int sendbar)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
struct sk_buff *skb = bf->bf_mpdu;
|
2011-09-15 03:24:26 +08:00
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
2009-01-17 00:08:42 +08:00
|
|
|
unsigned long flags;
|
2009-03-20 17:57:50 +08:00
|
|
|
int tx_flags = 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
if (sendbar)
|
2009-03-20 17:57:50 +08:00
|
|
|
tx_flags = ATH_TX_BAR;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-09-15 03:24:16 +08:00
|
|
|
if (!txok)
|
2009-03-20 17:57:50 +08:00
|
|
|
tx_flags |= ATH_TX_ERROR;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-09-15 03:24:26 +08:00
|
|
|
if (ts->ts_status & ATH9K_TXERR_FILT)
|
|
|
|
tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
|
|
|
|
|
2010-10-15 03:45:29 +08:00
|
|
|
dma_unmap_single(sc->dev, bf->bf_buf_addr, skb->len, DMA_TO_DEVICE);
|
2010-10-15 03:45:30 +08:00
|
|
|
bf->bf_buf_addr = 0;
|
2010-06-12 12:34:01 +08:00
|
|
|
|
|
|
|
if (bf->bf_state.bfs_paprd) {
|
2011-02-04 21:08:23 +08:00
|
|
|
if (time_after(jiffies,
|
|
|
|
bf->bf_state.bfs_paprd_timestamp +
|
|
|
|
msecs_to_jiffies(ATH_PAPRD_TIMEOUT)))
|
2010-06-24 17:42:44 +08:00
|
|
|
dev_kfree_skb_any(skb);
|
2010-06-24 17:42:46 +08:00
|
|
|
else
|
2010-06-24 17:42:44 +08:00
|
|
|
complete(&sc->paprd_complete);
|
2010-06-12 12:34:01 +08:00
|
|
|
} else {
|
2011-09-15 03:24:16 +08:00
|
|
|
ath_debug_stat_tx(sc, bf, ts, txq, tx_flags);
|
2011-07-29 20:08:14 +08:00
|
|
|
ath_tx_complete(sc, skb, tx_flags, txq);
|
2010-06-12 12:34:01 +08:00
|
|
|
}
|
2010-10-15 03:45:30 +08:00
|
|
|
/* At this point, skb (bf->bf_mpdu) is consumed...make sure we don't
|
|
|
|
* accidentally reference it later.
|
|
|
|
*/
|
|
|
|
bf->bf_mpdu = NULL;
|
2009-01-17 00:08:42 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Return the list of ath_buf of this mpdu to free queue
|
|
|
|
*/
|
|
|
|
spin_lock_irqsave(&sc->tx.txbuflock, flags);
|
|
|
|
list_splice_tail_init(bf_q, &sc->tx.txbuf);
|
|
|
|
spin_unlock_irqrestore(&sc->tx.txbuflock, flags);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2011-01-25 02:23:17 +08:00
|
|
|
static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
|
|
|
|
struct ath_tx_status *ts, int nframes, int nbad,
|
2011-09-15 03:24:26 +08:00
|
|
|
int txok)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-03-30 17:58:36 +08:00
|
|
|
struct sk_buff *skb = bf->bf_mpdu;
|
2009-02-04 10:40:19 +08:00
|
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
2011-01-25 02:23:17 +08:00
|
|
|
struct ieee80211_hw *hw = sc->hw;
|
2010-11-11 10:18:35 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-03-20 17:57:49 +08:00
|
|
|
u8 i, tx_rateindex;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-13 11:26:09 +08:00
|
|
|
if (txok)
|
2010-03-30 11:07:11 +08:00
|
|
|
tx_info->status.ack_signal = ts->ts_rssi;
|
2009-03-13 11:26:09 +08:00
|
|
|
|
2010-03-30 11:07:11 +08:00
|
|
|
tx_rateindex = ts->ts_rateindex;
|
2009-03-20 17:57:49 +08:00
|
|
|
WARN_ON(tx_rateindex >= hw->max_rates);
|
|
|
|
|
2011-09-15 03:24:26 +08:00
|
|
|
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
|
2010-03-01 20:32:11 +08:00
|
|
|
tx_info->flags |= IEEE80211_TX_STAT_AMPDU;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-11-14 22:20:07 +08:00
|
|
|
BUG_ON(nbad > nframes);
|
2010-10-11 04:44:39 +08:00
|
|
|
}
|
2011-09-27 00:18:39 +08:00
|
|
|
tx_info->status.ampdu_len = nframes;
|
|
|
|
tx_info->status.ampdu_ack_len = nframes - nbad;
|
2010-10-11 04:44:39 +08:00
|
|
|
|
2010-03-30 11:07:11 +08:00
|
|
|
if ((ts->ts_status & ATH9K_TXERR_FILT) == 0 &&
|
2011-09-15 03:24:26 +08:00
|
|
|
(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) == 0) {
|
2010-11-11 10:18:35 +08:00
|
|
|
/*
|
|
|
|
* If an underrun error is seen assume it as an excessive
|
|
|
|
* retry only if max frame trigger level has been reached
|
|
|
|
* (2 KB for single stream, and 4 KB for dual stream).
|
|
|
|
* Adjust the long retry as if the frame was tried
|
|
|
|
* hw->max_rate_tries times to affect how rate control updates
|
|
|
|
* PER for the failed rate.
|
|
|
|
* In case of congestion on the bus penalizing this type of
|
|
|
|
* underruns should help hardware actually transmit new frames
|
|
|
|
* successfully by eventually preferring slower rates.
|
|
|
|
* This itself should also alleviate congestion on the bus.
|
|
|
|
*/
|
2011-09-15 03:24:26 +08:00
|
|
|
if (unlikely(ts->ts_flags & (ATH9K_TX_DATA_UNDERRUN |
|
|
|
|
ATH9K_TX_DELIM_UNDERRUN)) &&
|
|
|
|
ieee80211_is_data(hdr->frame_control) &&
|
2011-03-24 03:57:33 +08:00
|
|
|
ah->tx_trig_level >= sc->sc_ah->config.max_txtrig_level)
|
2010-11-11 10:18:35 +08:00
|
|
|
tx_info->status.rates[tx_rateindex].count =
|
|
|
|
hw->max_rate_tries;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2009-03-20 17:57:49 +08:00
|
|
|
|
2009-11-24 05:21:01 +08:00
|
|
|
for (i = tx_rateindex + 1; i < hw->max_rates; i++) {
|
2009-03-20 17:57:49 +08:00
|
|
|
tx_info->status.rates[i].count = 0;
|
2009-11-24 05:21:01 +08:00
|
|
|
tx_info->status.rates[i].idx = -1;
|
|
|
|
}
|
2009-03-20 17:57:49 +08:00
|
|
|
|
2010-06-25 07:26:16 +08:00
|
|
|
tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
|
|
|
|
struct ath_tx_status *ts, struct ath_buf *bf,
|
|
|
|
struct list_head *bf_head)
|
2011-07-17 14:13:02 +08:00
|
|
|
__releases(txq->axq_lock)
|
|
|
|
__acquires(txq->axq_lock)
|
2011-05-19 18:20:25 +08:00
|
|
|
{
|
|
|
|
int txok;
|
|
|
|
|
|
|
|
txq->axq_depth--;
|
|
|
|
txok = !(ts->ts_status & ATH9K_TXERR_MASK);
|
|
|
|
txq->axq_tx_inprogress = false;
|
|
|
|
if (bf_is_ampdu_not_probing(bf))
|
|
|
|
txq->axq_ampdu_depth--;
|
|
|
|
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
|
|
|
|
if (!bf_isampdu(bf)) {
|
2011-09-15 03:24:26 +08:00
|
|
|
ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok);
|
2011-05-19 18:20:25 +08:00
|
|
|
ath_tx_complete_buf(sc, bf, txq, bf_head, ts, txok, 0);
|
|
|
|
} else
|
|
|
|
ath_tx_complete_aggr(sc, txq, bf, bf_head, ts, txok, true);
|
|
|
|
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
|
|
|
|
if (sc->sc_flags & SC_OP_TXAGGR)
|
|
|
|
ath_txq_schedule(sc, txq);
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-02-09 15:57:12 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_buf *bf, *lastbf, *bf_held = NULL;
|
2008-08-04 15:16:41 +08:00
|
|
|
struct list_head bf_head;
|
2009-01-17 00:08:42 +08:00
|
|
|
struct ath_desc *ds;
|
2010-03-30 11:14:23 +08:00
|
|
|
struct ath_tx_status ts;
|
2009-01-17 00:08:42 +08:00
|
|
|
int status;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n",
|
|
|
|
txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
|
|
|
|
txq->axq_link);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
for (;;) {
|
2011-09-03 07:40:25 +08:00
|
|
|
if (work_pending(&sc->hw_reset_work))
|
|
|
|
break;
|
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
if (list_empty(&txq->axq_q)) {
|
|
|
|
txq->axq_link = NULL;
|
2011-03-12 04:38:19 +08:00
|
|
|
if (sc->sc_flags & SC_OP_TXAGGR)
|
2011-01-10 15:11:47 +08:00
|
|
|
ath_txq_schedule(sc, txq);
|
2008-08-04 15:16:41 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
bf = list_first_entry(&txq->axq_q, struct ath_buf, list);
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* There is a race condition that a BH gets scheduled
|
|
|
|
* after sw writes TxE and before hw re-load the last
|
|
|
|
* descriptor to get the newly chained one.
|
|
|
|
* Software must keep the last DONE descriptor as a
|
|
|
|
* holding descriptor - software does so by marking
|
|
|
|
* it with the STALE flag.
|
|
|
|
*/
|
|
|
|
bf_held = NULL;
|
2009-03-30 17:58:38 +08:00
|
|
|
if (bf->bf_stale) {
|
2009-01-17 00:08:42 +08:00
|
|
|
bf_held = bf;
|
2011-05-19 18:20:25 +08:00
|
|
|
if (list_is_last(&bf_held->list, &txq->axq_q))
|
2009-01-17 00:08:42 +08:00
|
|
|
break;
|
2011-05-19 18:20:25 +08:00
|
|
|
|
|
|
|
bf = list_entry(bf_held->list.next, struct ath_buf,
|
|
|
|
list);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
lastbf = bf->bf_lastbf;
|
2009-01-17 00:08:42 +08:00
|
|
|
ds = lastbf->bf_desc;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-03-30 11:14:23 +08:00
|
|
|
memset(&ts, 0, sizeof(ts));
|
|
|
|
status = ath9k_hw_txprocdesc(ah, ds, &ts);
|
2011-05-19 18:20:25 +08:00
|
|
|
if (status == -EINPROGRESS)
|
2009-01-17 00:08:42 +08:00
|
|
|
break;
|
2011-05-19 18:20:25 +08:00
|
|
|
|
2011-01-10 15:11:45 +08:00
|
|
|
TX_STAT_INC(txq->axq_qnum, txprocdesc);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*
|
|
|
|
* Remove ath_buf's of the same transmit unit from txq,
|
|
|
|
* however leave the last descriptor back as the holding
|
|
|
|
* descriptor for hw.
|
|
|
|
*/
|
2009-03-30 17:58:38 +08:00
|
|
|
lastbf->bf_stale = true;
|
2009-01-17 00:08:42 +08:00
|
|
|
INIT_LIST_HEAD(&bf_head);
|
|
|
|
if (!list_is_singular(&lastbf->list))
|
|
|
|
list_cut_position(&bf_head,
|
|
|
|
&txq->axq_q, lastbf->list.prev);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (bf_held) {
|
2010-04-20 01:57:30 +08:00
|
|
|
list_del(&bf_held->list);
|
|
|
|
ath_tx_return_buffer(sc, bf_held);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head);
|
2008-10-29 12:49:28 +08:00
|
|
|
}
|
2011-05-19 18:20:25 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2008-10-29 12:49:28 +08:00
|
|
|
}
|
|
|
|
|
2009-07-23 18:02:29 +08:00
|
|
|
static void ath_tx_complete_poll_work(struct work_struct *work)
|
2009-07-15 08:17:09 +08:00
|
|
|
{
|
|
|
|
struct ath_softc *sc = container_of(work, struct ath_softc,
|
|
|
|
tx_complete_work.work);
|
|
|
|
struct ath_txq *txq;
|
|
|
|
int i;
|
|
|
|
bool needreset = false;
|
2011-01-10 15:11:52 +08:00
|
|
|
#ifdef CONFIG_ATH9K_DEBUGFS
|
|
|
|
sc->tx_complete_poll_work_seen++;
|
|
|
|
#endif
|
2009-07-15 08:17:09 +08:00
|
|
|
|
|
|
|
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
|
|
|
|
if (ATH_TXQ_SETUP(sc, i)) {
|
|
|
|
txq = &sc->tx.txq[i];
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
if (txq->axq_depth) {
|
|
|
|
if (txq->axq_tx_inprogress) {
|
|
|
|
needreset = true;
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
txq->axq_tx_inprogress = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (needreset) {
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
|
|
|
|
"tx hung, resetting the chip\n");
|
2011-10-07 08:28:13 +08:00
|
|
|
RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
|
2011-09-03 07:40:25 +08:00
|
|
|
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
2009-07-15 08:17:09 +08:00
|
|
|
}
|
|
|
|
|
2009-07-30 08:08:07 +08:00
|
|
|
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
|
2009-07-15 08:17:09 +08:00
|
|
|
msecs_to_jiffies(ATH_TX_COMPLETE_POLL_INT));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
void ath_tx_tasklet(struct ath_softc *sc)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-01-17 00:08:42 +08:00
|
|
|
int i;
|
|
|
|
u32 qcumask = ((1 << ATH9K_NUM_TX_QUEUES) - 1);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
ath9k_hw_gettxintrtxqs(sc->sc_ah, &qcumask);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
|
|
|
|
if (ATH_TXQ_SETUP(sc, i) && (qcumask & (1 << i)))
|
|
|
|
ath_tx_processq(sc, &sc->tx.txq[i]);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-04-16 05:39:36 +08:00
|
|
|
void ath_tx_edma_tasklet(struct ath_softc *sc)
|
|
|
|
{
|
2011-05-19 18:20:25 +08:00
|
|
|
struct ath_tx_status ts;
|
2010-04-16 05:39:36 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
struct ath_txq *txq;
|
|
|
|
struct ath_buf *bf, *lastbf;
|
|
|
|
struct list_head bf_head;
|
|
|
|
int status;
|
|
|
|
|
|
|
|
for (;;) {
|
2011-09-03 07:40:25 +08:00
|
|
|
if (work_pending(&sc->hw_reset_work))
|
|
|
|
break;
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
status = ath9k_hw_txprocdesc(ah, NULL, (void *)&ts);
|
2010-04-16 05:39:36 +08:00
|
|
|
if (status == -EINPROGRESS)
|
|
|
|
break;
|
|
|
|
if (status == -EIO) {
|
2010-12-03 11:12:37 +08:00
|
|
|
ath_dbg(common, ATH_DBG_XMIT,
|
|
|
|
"Error processing tx status\n");
|
2010-04-16 05:39:36 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Skip beacon completions */
|
2011-05-19 18:20:25 +08:00
|
|
|
if (ts.qid == sc->beacon.beaconq)
|
2010-04-16 05:39:36 +08:00
|
|
|
continue;
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
txq = &sc->tx.txq[ts.qid];
|
2010-04-16 05:39:36 +08:00
|
|
|
|
|
|
|
spin_lock_bh(&txq->axq_lock);
|
2011-05-19 18:20:25 +08:00
|
|
|
|
2010-04-16 05:39:36 +08:00
|
|
|
if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
bf = list_first_entry(&txq->txq_fifo[txq->txq_tailidx],
|
|
|
|
struct ath_buf, list);
|
|
|
|
lastbf = bf->bf_lastbf;
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&bf_head);
|
|
|
|
list_cut_position(&bf_head, &txq->txq_fifo[txq->txq_tailidx],
|
|
|
|
&lastbf->list);
|
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (list_empty(&txq->txq_fifo[txq->txq_tailidx])) {
|
|
|
|
INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
|
2010-04-16 05:39:36 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
if (!list_empty(&txq->axq_q)) {
|
|
|
|
struct list_head bf_q;
|
2011-01-10 15:11:52 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
INIT_LIST_HEAD(&bf_q);
|
|
|
|
txq->axq_link = NULL;
|
|
|
|
list_splice_tail_init(&txq->axq_q, &bf_q);
|
|
|
|
ath_tx_txqaddbuf(sc, txq, &bf_q, true);
|
|
|
|
}
|
|
|
|
}
|
2011-03-12 04:38:19 +08:00
|
|
|
|
2011-05-19 18:20:25 +08:00
|
|
|
ath_tx_process_buffer(sc, txq, &ts, bf, &bf_head);
|
2010-04-16 05:39:36 +08:00
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
/*****************/
|
|
|
|
/* Init, Cleanup */
|
|
|
|
/*****************/
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-04-16 05:39:34 +08:00
|
|
|
static int ath_txstatus_setup(struct ath_softc *sc, int size)
|
|
|
|
{
|
|
|
|
struct ath_descdma *dd = &sc->txsdma;
|
|
|
|
u8 txs_len = sc->sc_ah->caps.txs_len;
|
|
|
|
|
|
|
|
dd->dd_desc_len = size * txs_len;
|
|
|
|
dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
|
|
|
|
&dd->dd_desc_paddr, GFP_KERNEL);
|
|
|
|
if (!dd->dd_desc)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ath_tx_edma_init(struct ath_softc *sc)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = ath_txstatus_setup(sc, ATH_TXSTATUS_RING_SIZE);
|
|
|
|
if (!err)
|
|
|
|
ath9k_hw_setup_statusring(sc->sc_ah, sc->txsdma.dd_desc,
|
|
|
|
sc->txsdma.dd_desc_paddr,
|
|
|
|
ATH_TXSTATUS_RING_SIZE);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ath_tx_edma_cleanup(struct ath_softc *sc)
|
|
|
|
{
|
|
|
|
struct ath_descdma *dd = &sc->txsdma;
|
|
|
|
|
|
|
|
dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
|
|
|
|
dd->dd_desc_paddr);
|
|
|
|
}
|
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
int ath_tx_init(struct ath_softc *sc, int nbufs)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
2009-01-17 00:08:42 +08:00
|
|
|
int error = 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-30 17:58:45 +08:00
|
|
|
spin_lock_init(&sc->tx.txbuflock);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-30 17:58:45 +08:00
|
|
|
error = ath_descdma_setup(sc, &sc->tx.txdma, &sc->tx.txbuf,
|
2010-04-16 05:39:33 +08:00
|
|
|
"tx", nbufs, 1, 1);
|
2009-03-30 17:58:45 +08:00
|
|
|
if (error != 0) {
|
2010-12-03 11:12:36 +08:00
|
|
|
ath_err(common,
|
|
|
|
"Failed to allocate tx descriptors: %d\n", error);
|
2009-03-30 17:58:45 +08:00
|
|
|
goto err;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-30 17:58:45 +08:00
|
|
|
error = ath_descdma_setup(sc, &sc->beacon.bdma, &sc->beacon.bbuf,
|
2010-04-16 05:39:34 +08:00
|
|
|
"beacon", ATH_BCBUF, 1, 1);
|
2009-03-30 17:58:45 +08:00
|
|
|
if (error != 0) {
|
2010-12-03 11:12:36 +08:00
|
|
|
ath_err(common,
|
|
|
|
"Failed to allocate beacon descriptors: %d\n", error);
|
2009-03-30 17:58:45 +08:00
|
|
|
goto err;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-07-15 08:17:09 +08:00
|
|
|
INIT_DELAYED_WORK(&sc->tx_complete_work, ath_tx_complete_poll_work);
|
|
|
|
|
2010-04-16 05:39:34 +08:00
|
|
|
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
|
|
|
|
error = ath_tx_edma_init(sc);
|
|
|
|
if (error)
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2009-03-30 17:58:45 +08:00
|
|
|
err:
|
2009-01-17 00:08:42 +08:00
|
|
|
if (error != 0)
|
|
|
|
ath_tx_cleanup(sc);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-01-17 00:08:42 +08:00
|
|
|
return error;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-03-30 17:58:45 +08:00
|
|
|
void ath_tx_cleanup(struct ath_softc *sc)
|
2009-01-17 00:08:42 +08:00
|
|
|
{
|
|
|
|
if (sc->beacon.bdma.dd_desc_len != 0)
|
|
|
|
ath_descdma_cleanup(sc, &sc->beacon.bdma, &sc->beacon.bbuf);
|
|
|
|
|
|
|
|
if (sc->tx.txdma.dd_desc_len != 0)
|
|
|
|
ath_descdma_cleanup(sc, &sc->tx.txdma, &sc->tx.txbuf);
|
2010-04-16 05:39:34 +08:00
|
|
|
|
|
|
|
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
|
|
|
|
ath_tx_edma_cleanup(sc);
|
2009-01-17 00:08:42 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
|
|
|
|
{
|
2008-10-29 12:43:59 +08:00
|
|
|
struct ath_atx_tid *tid;
|
|
|
|
struct ath_atx_ac *ac;
|
|
|
|
int tidno, acno;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2008-12-08 00:13:36 +08:00
|
|
|
for (tidno = 0, tid = &an->tid[tidno];
|
2008-10-29 12:43:59 +08:00
|
|
|
tidno < WME_NUM_TID;
|
|
|
|
tidno++, tid++) {
|
|
|
|
tid->an = an;
|
|
|
|
tid->tidno = tidno;
|
|
|
|
tid->seq_start = tid->seq_next = 0;
|
|
|
|
tid->baw_size = WME_MAX_BA;
|
|
|
|
tid->baw_head = tid->baw_tail = 0;
|
|
|
|
tid->sched = false;
|
2009-01-17 00:08:42 +08:00
|
|
|
tid->paused = false;
|
2008-10-29 12:45:40 +08:00
|
|
|
tid->state &= ~AGGR_CLEANUP;
|
2011-08-28 06:32:22 +08:00
|
|
|
__skb_queue_head_init(&tid->buf_q);
|
2008-10-29 12:43:59 +08:00
|
|
|
acno = TID_TO_WME_AC(tidno);
|
2008-12-08 00:13:36 +08:00
|
|
|
tid->ac = &an->ac[acno];
|
2008-10-29 12:45:40 +08:00
|
|
|
tid->state &= ~AGGR_ADDBA_COMPLETE;
|
|
|
|
tid->state &= ~AGGR_ADDBA_PROGRESS;
|
2008-10-29 12:43:59 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2008-12-08 00:13:36 +08:00
|
|
|
for (acno = 0, ac = &an->ac[acno];
|
2008-10-29 12:43:59 +08:00
|
|
|
acno < WME_NUM_AC; acno++, ac++) {
|
|
|
|
ac->sched = false;
|
2010-11-07 21:59:39 +08:00
|
|
|
ac->txq = sc->tx.txq_map[acno];
|
2008-10-29 12:43:59 +08:00
|
|
|
INIT_LIST_HEAD(&ac->tid_q);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-10-29 12:43:31 +08:00
|
|
|
void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2010-07-08 01:42:08 +08:00
|
|
|
struct ath_atx_ac *ac;
|
|
|
|
struct ath_atx_tid *tid;
|
2008-08-04 15:16:41 +08:00
|
|
|
struct ath_txq *txq;
|
2010-11-07 21:59:39 +08:00
|
|
|
int tidno;
|
2009-01-17 00:08:42 +08:00
|
|
|
|
2010-07-08 01:42:08 +08:00
|
|
|
for (tidno = 0, tid = &an->tid[tidno];
|
|
|
|
tidno < WME_NUM_TID; tidno++, tid++) {
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-07-08 01:42:08 +08:00
|
|
|
ac = tid->ac;
|
2010-11-07 21:59:39 +08:00
|
|
|
txq = ac->txq;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-07-08 01:42:08 +08:00
|
|
|
spin_lock_bh(&txq->axq_lock);
|
|
|
|
|
|
|
|
if (tid->sched) {
|
|
|
|
list_del(&tid->list);
|
|
|
|
tid->sched = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ac->sched) {
|
|
|
|
list_del(&ac->list);
|
|
|
|
tid->ac->sched = false;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2010-07-08 01:42:08 +08:00
|
|
|
|
|
|
|
ath_tid_drain(sc, txq, tid);
|
|
|
|
tid->state &= ~AGGR_ADDBA_COMPLETE;
|
|
|
|
tid->state &= ~AGGR_CLEANUP;
|
|
|
|
|
|
|
|
spin_unlock_bh(&txq->axq_lock);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|