Release 4.11 drivers/net/wireless/ath/ath9k/main.c

/*
 * Copyright (c) 2008-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/nl80211.h>
#include <linux/delay.h>
#include "ath9k.h"
#include "btcoex.h"



u8 ath9k_parse_mpdudensity(u8 mpdudensity)
{
	/*
         * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
         *   0 for no restriction
         *   1 for 1/4 us
         *   2 for 1/2 us
         *   3 for 1 us
         *   4 for 2 us
         *   5 for 4 us
         *   6 for 8 us
         *   7 for 16 us
         */
	switch (mpdudensity) {
	case 0:
		return 0;
	case 1:
	case 2:
	case 3:
		/* Our lower layer calculations limit our precision to
                   1 microsecond */
		return 1;
	case 4:
		return 2;
	case 5:
		return 4;
	case 6:
		return 8;
	case 7:
		return 16;
	default:
		return 0;
	}
}

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Johannes Berg
6
9.68%
1
25.00%
Jouni Malinen
3
4.84%
1
25.00%
Sven Eckelmann
1
1.61%
1
25.00%
Total
62
100.00%
4
100.00%



static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq,
				     bool sw_pending)
{
	bool pending = false;

	spin_lock_bh(&txq->axq_lock);

	if (txq->axq_depth) {
		pending = true;
		goto out;
	}

	if (!sw_pending)
		goto out;

	if (txq->mac80211_qnum >= 0) {
		struct ath_acq *acq;

		acq = &sc->cur_chan->acq[txq->mac80211_qnum];
		if (!list_empty(&acq->acq_new) || !list_empty(&acq->acq_old))
			pending = true;
	}
out:
	spin_unlock_bh(&txq->axq_lock);
	return pending;
}

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33
27.27%
1
20.00%
Sujith Manoharan
18
14.88%
2
40.00%
Toke Höiland-Jörgensen
16
13.22%
1
20.00%
Total
121
100.00%
5
100.00%



static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
{
	unsigned long flags;
	bool ret;

	spin_lock_irqsave(&sc->sc_pm_lock, flags);
	ret = ath9k_hw_setpower(sc->sc_ah, mode);
	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);

	return ret;
}

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Jouni Malinen
5
8.93%
2
33.33%
Luis R. Rodriguez
2
3.57%
1
16.67%
Mohammed Shafi Shajakhan
1
1.79%
1
16.67%
Total
56
100.00%
6
100.00%



void ath_ps_full_sleep(unsigned long data)
{
	struct ath_softc *sc = (struct ath_softc *) data;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	bool reset;

	spin_lock(&common->cc_lock);
	ath_hw_cycle_counters_update(common);
	spin_unlock(&common->cc_lock);

	ath9k_hw_setrxabort(sc->sc_ah, 1);
	ath9k_hw_stopdmarecv(sc->sc_ah, &reset);

	ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
}

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85
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1
100.00%



void ath9k_ps_wakeup(struct ath_softc *sc)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	unsigned long flags;
	enum ath9k_power_mode power_mode;

	spin_lock_irqsave(&sc->sc_pm_lock, flags);
	if (++sc->ps_usecount != 1)
		goto unlock;

	del_timer_sync(&sc->sleep_timer);
	power_mode = sc->sc_ah->power_mode;
	ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);

	/*
         * While the hardware is asleep, the cycle counters contain no
         * useful data. Better clear them now so that they don't mess up
         * survey data results.
         */
	if (power_mode != ATH9K_PM_AWAKE) {
		spin_lock(&common->cc_lock);
		ath_hw_cycle_counters_update(common);
		memset(&common->cc_survey, 0, sizeof(common->cc_survey));
		memset(&common->cc_ani, 0, sizeof(common->cc_ani));
		spin_unlock(&common->cc_lock);
	}

 unlock:
	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
}

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Felix Fietkau
79
51.63%
3
50.00%
Sujith Manoharan
39
25.49%
1
16.67%
Jouni Malinen
18
11.76%
1
16.67%
Rajkumar Manoharan
17
11.11%
1
16.67%
Total
153
100.00%
6
100.00%



void ath9k_ps_restore(struct ath_softc *sc)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	enum ath9k_power_mode mode;
	unsigned long flags;

	spin_lock_irqsave(&sc->sc_pm_lock, flags);
	if (--sc->ps_usecount != 0)
		goto unlock;

	if (sc->ps_idle) {
		mod_timer(&sc->sleep_timer, jiffies + HZ / 10);
		goto unlock;
	}

	if (sc->ps_enabled &&
		   !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
				     PS_WAIT_FOR_CAB |
				     PS_WAIT_FOR_PSPOLL_DATA |
				     PS_WAIT_FOR_TX_ACK |
				     PS_WAIT_FOR_ANI))) {
		mode = ATH9K_PM_NETWORK_SLEEP;
		if (ath9k_hw_btcoex_is_enabled(sc->sc_ah))
			ath9k_btcoex_stop_gen_timer(sc);
	} else {
		goto unlock;
	}

	spin_lock(&common->cc_lock);
	ath_hw_cycle_counters_update(common);
	spin_unlock(&common->cc_lock);

	ath9k_hw_setpower(sc->sc_ah, mode);

 unlock:
	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
}

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Sujith Manoharan
73
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5
35.71%
Felix Fietkau
57
33.53%
4
28.57%
Jouni Malinen
19
11.18%
1
7.14%
Rajkumar Manoharan
16
9.41%
2
14.29%
Vivek Natarajan
4
2.35%
1
7.14%
Luis R. Rodriguez
1
0.59%
1
7.14%
Total
170
100.00%
14
100.00%



static void __ath_cancel_work(struct ath_softc *sc)
{
	cancel_work_sync(&sc->paprd_work);
	cancel_delayed_work_sync(&sc->hw_check_work);
	cancel_delayed_work_sync(&sc->hw_pll_work);

#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
	if (ath9k_hw_mci_is_enabled(sc->sc_ah))
		cancel_work_sync(&sc->mci_work);
#endif
}

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20
35.09%
2
33.33%
Rajkumar Manoharan
8
14.04%
1
16.67%
Total
57
100.00%
6
100.00%



void ath_cancel_work(struct ath_softc *sc)
{
	__ath_cancel_work(sc);
	cancel_work_sync(&sc->hw_reset_work);
}

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15
65.22%
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66.67%
Sujith Manoharan
8
34.78%
1
33.33%
Total
23
100.00%
3
100.00%



void ath_restart_work(struct ath_softc *sc)
{
	ieee80211_queue_delayed_work(sc->hw, &sc->hw_check_work,
				     ATH_HW_CHECK_POLL_INT);

	if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9330(sc->sc_ah))
		ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work,
				     msecs_to_jiffies(ATH_PLL_WORK_INTERVAL));

	ath_start_ani(sc);
}

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7
11.29%
1
20.00%
Felix Fietkau
2
3.23%
1
20.00%
Total
62
100.00%
5
100.00%



static bool ath_prepare_reset(struct ath_softc *sc)
{
	struct ath_hw *ah = sc->sc_ah;
	bool ret = true;

	ieee80211_stop_queues(sc->hw);
	ath_stop_ani(sc);
	ath9k_hw_disable_interrupts(ah);

	if (AR_SREV_9300_20_OR_LATER(ah)) {
		ret &= ath_stoprecv(sc);
		ret &= ath_drain_all_txq(sc);
	} else {
		ret &= ath_drain_all_txq(sc);
		ret &= ath_stoprecv(sc);
	}

	return ret;
}

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71.43%
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29.41%
2
28.57%
Total
85
100.00%
7
100.00%



static bool ath_complete_reset(struct ath_softc *sc, bool start)
{
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	unsigned long flags;

	ath9k_calculate_summary_state(sc, sc->cur_chan);
	ath_startrecv(sc);
	ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
			       sc->cur_chan->txpower,
			       &sc->cur_chan->cur_txpower);
	clear_bit(ATH_OP_HW_RESET, &common->op_flags);

	if (!sc->cur_chan->offchannel && start) {
		/* restore per chanctx TSF timer */
		if (sc->cur_chan->tsf_val) {
			u32 offset;

			offset = ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts,
							 NULL);
			ath9k_hw_settsf64(ah, sc->cur_chan->tsf_val + offset);
		}


		if (!test_bit(ATH_OP_BEACONS, &common->op_flags))
			goto work;

		if (ah->opmode == NL80211_IFTYPE_STATION &&
		    test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) {
			spin_lock_irqsave(&sc->sc_pm_lock, flags);
			sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
			spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
		} else {
			ath9k_set_beacon(sc);
		}
	work:
		ath_restart_work(sc);
		ath_txq_schedule_all(sc);
	}

	sc->gtt_cnt = 0;

	ath9k_hw_set_interrupts(ah);
	ath9k_hw_enable_interrupts(ah);
	ieee80211_wake_queues(sc->hw);
	ath9k_p2p_ps_timer(sc);

	return true;
}

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Sujith Manoharan
100
39.37%
10
37.04%
Rajkumar Manoharan
12
4.72%
2
7.41%
Oleksij Rempel
9
3.54%
1
3.70%
Luis R. Rodriguez
5
1.97%
1
3.70%
Senthil Balasubramanian
1
0.39%
1
3.70%
Total
254
100.00%
27
100.00%



static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan)
{
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_hw_cal_data *caldata = NULL;
	bool fastcc = true;
	int r;

	__ath_cancel_work(sc);

	disable_irq(sc->irq);
	tasklet_disable(&sc->intr_tq);
	tasklet_disable(&sc->bcon_tasklet);
	spin_lock_bh(&sc->sc_pcu_lock);

	if (!sc->cur_chan->offchannel) {
		fastcc = false;
		caldata = &sc->cur_chan->caldata;
	}

	if (!hchan) {
		fastcc = false;
		hchan = ah->curchan;
	}

	if (!ath_prepare_reset(sc))
		fastcc = false;

	if (ath9k_is_chanctx_enabled())
		fastcc = false;

	spin_lock_bh(&sc->chan_lock);
	sc->cur_chandef = sc->cur_chan->chandef;
	spin_unlock_bh(&sc->chan_lock);

	ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n",
		hchan->channel, IS_CHAN_HT40(hchan), fastcc);

	r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
	if (r) {
		ath_err(common,
			"Unable to reset channel, reset status %d\n", r);

		ath9k_hw_enable_interrupts(ah);
		ath9k_queue_reset(sc, RESET_TYPE_BB_HANG);

		goto out;
	}

	if (ath9k_hw_mci_is_enabled(sc->sc_ah) &&
	    sc->cur_chan->offchannel)
		ath9k_mci_set_txpower(sc, true, false);

	if (!ath_complete_reset(sc, true))
		r = -EIO;

out:
	enable_irq(sc->irq);
	spin_unlock_bh(&sc->sc_pcu_lock);
	tasklet_enable(&sc->bcon_tasklet);
	tasklet_enable(&sc->intr_tq);

	return r;
}

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Sujith Manoharan
82
26.28%
7
26.92%
Rajkumar Manoharan
27
8.65%
3
11.54%
Robert Shade
12
3.85%
1
3.85%
Senthil Balasubramanian
7
2.24%
1
3.85%
Luis R. Rodriguez
3
0.96%
2
7.69%
Joe Perches
3
0.96%
3
11.54%
Total
312
100.00%
26
100.00%



static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
			    struct ieee80211_vif *vif)
{
	struct ath_node *an;
	an = (struct ath_node *)sta->drv_priv;

	an->sc = sc;
	an->sta = sta;
	an->vif = vif;
	memset(&an->key_idx, 0, sizeof(an->key_idx));

	ath_tx_node_init(sc, an);

	ath_dynack_node_init(sc->sc_ah, an);
}

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18
20.45%
2
33.33%
Rajkumar Manoharan
17
19.32%
1
16.67%
Lorenzo Bianconi
9
10.23%
1
16.67%
Total
88
100.00%
6
100.00%



static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
{
	struct ath_node *an = (struct ath_node *)sta->drv_priv;
	ath_tx_node_cleanup(sc, an);

	ath_dynack_node_deinit(sc->sc_ah, an);
}

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21
45.65%
1
33.33%
Felix Fietkau
16
34.78%
1
33.33%
Lorenzo Bianconi
9
19.57%
1
33.33%
Total
46
100.00%
3
100.00%



void ath9k_tasklet(unsigned long data)
{
	struct ath_softc *sc = (struct ath_softc *)data;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	enum ath_reset_type type;
	unsigned long flags;
	u32 status;
	u32 rxmask;

	spin_lock_irqsave(&sc->intr_lock, flags);
	status = sc->intrstatus;
	sc->intrstatus = 0;
	spin_unlock_irqrestore(&sc->intr_lock, flags);

	ath9k_ps_wakeup(sc);
	spin_lock(&sc->sc_pcu_lock);

	if (status & ATH9K_INT_FATAL) {
		type = RESET_TYPE_FATAL_INT;
		ath9k_queue_reset(sc, type);
		ath_dbg(common, RESET, "FATAL: Skipping interrupts\n");
		goto out;
	}

	if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) &&
	    (status & ATH9K_INT_BB_WATCHDOG)) {
		spin_lock(&common->cc_lock);
		ath_hw_cycle_counters_update(common);
		ar9003_hw_bb_watchdog_dbg_info(ah);
		spin_unlock(&common->cc_lock);

		if (ar9003_hw_bb_watchdog_check(ah)) {
			type = RESET_TYPE_BB_WATCHDOG;
			ath9k_queue_reset(sc, type);

			ath_dbg(common, RESET,
				"BB_WATCHDOG: Skipping interrupts\n");
			goto out;
		}
	}

	if (status & ATH9K_INT_GTT) {
		sc->gtt_cnt++;

		if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) {
			type = RESET_TYPE_TX_GTT;
			ath9k_queue_reset(sc, type);
			ath_dbg(common, RESET,
				"GTT: Skipping interrupts\n");
			goto out;
		}
	}

	spin_lock_irqsave(&sc->sc_pm_lock, flags);
	if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
		/*
                 * TSF sync does not look correct; remain awake to sync with
                 * the next Beacon.
                 */
		ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n");
		sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
	}
	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);

	if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
		rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
			  ATH9K_INT_RXORN);
	else
		rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);

	if (status & rxmask) {
		/* Check for high priority Rx first */
		if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
		    (status & ATH9K_INT_RXHP))
			ath_rx_tasklet(sc, 0, true);

		ath_rx_tasklet(sc, 0, false);
	}

	if (status & ATH9K_INT_TX) {
		if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
			/*
                         * For EDMA chips, TX completion is enabled for the
                         * beacon queue, so if a beacon has been transmitted
                         * successfully after a GTT interrupt, the GTT counter
                         * gets reset to zero here.
                         */
			sc->gtt_cnt = 0;

			ath_tx_edma_tasklet(sc);
		} else {
			ath_tx_tasklet(sc);
		}

		wake_up(&sc->tx_wait);
	}

	if (status & ATH9K_INT_GENTIMER)
		ath_gen_timer_isr(sc->sc_ah);

	ath9k_btcoex_handle_interrupt(sc, status);

	/* re-enable hardware interrupt */
	ath9k_hw_resume_interrupts(ah);
out:
	spin_unlock(&sc->sc_pcu_lock);
	ath9k_ps_restore(sc);
}

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346
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Felix Fietkau
82
17.05%
11
32.35%
Luis R. Rodriguez
25
5.20%
6
17.65%
Mohammed Shafi Shajakhan
19
3.95%
2
5.88%
Rajkumar Manoharan
7
1.46%
2
5.88%
Gabor Juhos
2
0.42%
1
2.94%
Total
481
100.00%
34
100.00%



irqreturn_t ath_isr(int irq, void *dev)
{

#define SCHED_INTR (                               \
                ATH9K_INT_FATAL |               \
                ATH9K_INT_BB_WATCHDOG |         \
                ATH9K_INT_RXORN |               \
                ATH9K_INT_RXEOL |               \
                ATH9K_INT_RX |                  \
                ATH9K_INT_RXLP |                \
                ATH9K_INT_RXHP |                \
                ATH9K_INT_TX |                  \
                ATH9K_INT_BMISS |               \
                ATH9K_INT_CST |                 \
                ATH9K_INT_GTT |                 \
                ATH9K_INT_TSFOOR |              \
                ATH9K_INT_GENTIMER |            \
                ATH9K_INT_MCI)

	struct ath_softc *sc = dev;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	enum ath9k_int status;
	u32 sync_cause = 0;
	bool sched = false;

	/*
         * The hardware is not ready/present, don't
         * touch anything. Note this can happen early
         * on if the IRQ is shared.
         */
	if (!ah || test_bit(ATH_OP_INVALID, &common->op_flags))
		return IRQ_NONE;

	/* shared irq, not for us */
	if (!ath9k_hw_intrpend(ah))
		return IRQ_NONE;

	/*
         * Figure out the reason(s) for the interrupt.  Note
         * that the hal returns a pseudo-ISR that may include
         * bits we haven't explicitly enabled so we mask the
         * value to insure we only process bits we requested.
         */
	ath9k_hw_getisr(ah, &status, &sync_cause); /* NB: clears ISR too */
	ath9k_debug_sync_cause(sc, sync_cause);
	status &= ah->imask;	/* discard unasked-for bits */

	if (test_bit(ATH_OP_HW_RESET, &common->op_flags))
		return IRQ_HANDLED;

	/*
         * If there are no status bits set, then this interrupt was not
         * for me (should have been caught above).
         */
	if (!status)
		return IRQ_NONE;

	/* Cache the status */
	spin_lock(&sc->intr_lock);
	sc->intrstatus |= status;
	spin_unlock(&sc->intr_lock);

	if (status & SCHED_INTR)
		sched = true;

	/*
         * If a FATAL interrupt is received, we have to reset the chip
         * immediately.
         */
	if (status & ATH9K_INT_FATAL)
		goto chip_reset;

	if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) &&
	    (status & ATH9K_INT_BB_WATCHDOG))
		goto chip_reset;

	if (status & ATH9K_INT_SWBA)
		tasklet_schedule(&sc->bcon_tasklet);

	if (status & ATH9K_INT_TXURN)
		ath9k_hw_updatetxtriglevel(ah, true);

	if (status & ATH9K_INT_RXEOL) {
		ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
		ath9k_hw_set_interrupts(ah);
	}

	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
		if (status & ATH9K_INT_TIM_TIMER) {
			if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
				goto chip_reset;
			/* Clear RxAbort bit so that we can
                         * receive frames */
			ath9k_setpower(sc, ATH9K_PM_AWAKE);
			spin_lock(&sc->sc_pm_lock);
			ath9k_hw_setrxabort(sc->sc_ah, 0);
			sc->ps_flags |= PS_WAIT_FOR_BEACON;
			spin_unlock(&sc->sc_pm_lock);
		}

chip_reset:

	ath_debug_stat_interrupt(sc, status);

	if (sched) {
		/* turn off every interrupt */
		ath9k_hw_kill_interrupts(ah);
		tasklet_schedule(&sc->intr_tq);
	}

	return IRQ_HANDLED;


#undef SCHED_INTR
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
227
63.06%
7
38.89%
Felix Fietkau
92
25.56%
8
44.44%
Rajkumar Manoharan
25
6.94%
1
5.56%
Oleksij Rempel
13
3.61%
1
5.56%
Wojciech Dubowik
3
0.83%
1
5.56%
Total
360
100.00%
18
100.00%

/*
 * This function is called when a HW reset cannot be deferred
 * and has to be immediate.
 */


int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	int r;

	ath9k_hw_kill_interrupts(sc->sc_ah);
	set_bit(ATH_OP_HW_RESET, &common->op_flags);

	ath9k_ps_wakeup(sc);
	r = ath_reset_internal(sc, hchan);
	ath9k_ps_restore(sc);

	return r;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
48
69.57%
3
60.00%
Felix Fietkau
21
30.43%
2
40.00%
Total
69
100.00%
5
100.00%

/*
 * When a HW reset can be deferred, it is added to the
 * hw_reset_work workqueue, but we set ATH_OP_HW_RESET before
 * queueing.
 */


void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
#ifdef CONFIG_ATH9K_DEBUGFS
	RESET_STAT_INC(sc, type);
#endif
	ath9k_hw_kill_interrupts(sc->sc_ah);
	set_bit(ATH_OP_HW_RESET, &common->op_flags);
	ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
45
67.16%
1
33.33%
Oleksij Rempel
15
22.39%
1
33.33%
Felix Fietkau
7
10.45%
1
33.33%
Total
67
100.00%
3
100.00%



void ath_reset_work(struct work_struct *work)
{
	struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work);

	ath9k_ps_wakeup(sc);
	ath_reset_internal(sc, NULL);
	ath9k_ps_restore(sc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
27
64.29%
1
33.33%
Sujith Manoharan
15
35.71%
2
66.67%
Total
42
100.00%
3
100.00%

/**********************/
/* mac80211 callbacks */
/**********************/



static int ath9k_start(struct ieee80211_hw *hw)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ieee80211_channel *curchan = sc->cur_chan->chandef.chan;
	struct ath_chanctx *ctx = sc->cur_chan;
	struct ath9k_channel *init_channel;
	int r;

	ath_dbg(common, CONFIG,
		"Starting driver with initial channel: %d MHz\n",
		curchan->center_freq);

	ath9k_ps_wakeup(sc);
	mutex_lock(&sc->mutex);

	init_channel = ath9k_cmn_get_channel(hw, ah, &ctx->chandef);
	sc->cur_chandef = hw->conf.chandef;

	/* Reset SERDES registers */
	ath9k_hw_configpcipowersave(ah, false);

	/*
         * The basic interface to setting the hardware in a good
         * state is ``reset''.  On return the hardware is known to
         * be powered up and with interrupts disabled.  This must
         * be followed by initialization of the appropriate bits
         * and then setup of the interrupt mask.
         */
	spin_lock_bh(&sc->sc_pcu_lock);

	atomic_set(&ah->intr_ref_cnt, -1);

	r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
	if (r) {
		ath_err(common,
			"Unable to reset hardware; reset status %d (freq %u MHz)\n",
			r, curchan->center_freq);
		ah->reset_power_on = false;
	}

	/* Setup our intr mask. */
	ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
		    ATH9K_INT_RXORN | ATH9K_INT_FATAL |
		    ATH9K_INT_GLOBAL;

	if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
		ah->imask |= ATH9K_INT_RXHP |
			     ATH9K_INT_RXLP;
	else
		ah->imask |= ATH9K_INT_RX;

	if (ah->config.hw_hang_checks & HW_BB_WATCHDOG)
		ah->imask |= ATH9K_INT_BB_WATCHDOG;

	/*
         * Enable GTT interrupts only for AR9003/AR9004 chips
         * for now.
         */
	if (AR_SREV_9300_20_OR_LATER(ah))
		ah->imask |= ATH9K_INT_GTT;

	if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
		ah->imask |= ATH9K_INT_CST;

	ath_mci_enable(sc);

	clear_bit(ATH_OP_INVALID, &common->op_flags);
	sc->sc_ah->is_monitoring = false;

	if (!ath_complete_reset(sc, false))
		ah->reset_power_on = false;

	if (ah->led_pin >= 0) {
		ath9k_hw_set_gpio(ah, ah->led_pin,
				  (ah->config.led_active_high) ? 1 : 0);
		ath9k_hw_gpio_request_out(ah, ah->led_pin, NULL,
					  AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	}

	/*
         * Reset key cache to sane defaults (all entries cleared) instead of
         * semi-random values after suspend/resume.
         */
	ath9k_cmn_init_crypto(sc->sc_ah);

	ath9k_hw_reset_tsf(ah);

	spin_unlock_bh(&sc->sc_pcu_lock);

	mutex_unlock(&sc->mutex);

	ath9k_ps_restore(sc);

	ath9k_rng_start(sc);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
139
34.92%
9
19.57%
Felix Fietkau
120
30.15%
12
26.09%
Luis R. Rodriguez
61
15.33%
7
15.22%
Vasanthakumar Thiagarajan
17
4.27%
2
4.35%
Giedrius Statkevičius
15
3.77%
1
2.17%
Rajkumar Manoharan
12
3.02%
3
6.52%
Jouni Malinen
8
2.01%
2
4.35%
Senthil Balasubramanian
6
1.51%
1
2.17%
Miaoqing Pan
5
1.26%
1
2.17%
Joe Perches
4
1.01%
3
6.52%
Pavel Roskin
3
0.75%
1
2.17%
Karl Beldan
3
0.75%
1
2.17%
Oleksij Rempel
3
0.75%
1
2.17%
Stanislaw Gruszka
1
0.25%
1
2.17%
Mohammed Shafi Shajakhan
1
0.25%
1
2.17%
Total
398
100.00%
46
100.00%



static void ath9k_tx(struct ieee80211_hw *hw,
		     struct ieee80211_tx_control *control,
		     struct sk_buff *skb)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_tx_control txctl;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
	unsigned long flags;

	if (sc->ps_enabled) {
		/*
                 * mac80211 does not set PM field for normal data frames, so we
                 * need to update that based on the current PS mode.
                 */
		if (ieee80211_is_data(hdr->frame_control) &&
		    !ieee80211_is_nullfunc(hdr->frame_control) &&
		    !ieee80211_has_pm(hdr->frame_control)) {
			ath_dbg(common, PS,
				"Add PM=1 for a TX frame while in PS mode\n");
			hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
		}
	}

	if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) {
		/*
                 * We are using PS-Poll and mac80211 can request TX while in
                 * power save mode. Need to wake up hardware for the TX to be
                 * completed and if needed, also for RX of buffered frames.
                 */
		ath9k_ps_wakeup(sc);
		spin_lock_irqsave(&sc->sc_pm_lock, flags);
		if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
			ath9k_hw_setrxabort(sc->sc_ah, 0);
		if (ieee80211_is_pspoll(hdr->frame_control)) {
			ath_dbg(common, PS,
				"Sending PS-Poll to pick a buffered frame\n");
			sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
		} else {
			ath_dbg(common, PS, "Wake up to complete TX\n");
			sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
		}
		/*
                 * The actual restore operation will happen only after
                 * the ps_flags bit is cleared. We are just dropping
                 * the ps_usecount here.
                 */
		spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
		ath9k_ps_restore(sc);
	}

	/*
         * Cannot tx while the hardware is in full sleep, it first needs a full
         * chip reset to recover from that
         */
	if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) {
		ath_err(common, "TX while HW is in FULL_SLEEP mode\n");
		goto exit;
	}

	memset(&txctl, 0, sizeof(struct ath_tx_control));
	txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
	txctl.sta = control->sta;

	ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb);

	if (ath_tx_start(hw, skb, &txctl) != 0) {
		ath_dbg(common, XMIT, "TX failed\n");
		TX_STAT_INC(txctl.txq->axq_qnum, txfailed);
		goto exit;
	}

	return;
exit:
	ieee80211_free_txskb(hw, skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jouni Malinen
114
31.93%
5
19.23%
Sujith Manoharan
85
23.81%
5
19.23%
Luis R. Rodriguez
44
12.32%
2
7.69%
Vasanthakumar Thiagarajan
34
9.52%
2
7.69%
Felix Fietkau
28
7.84%
5
19.23%
Benoit Papillault
14
3.92%
1
3.85%
Thomas Huehn
13
3.64%
1
3.85%
Joe Perches
11
3.08%
2
7.69%
Ben Greear
11
3.08%
1
3.85%
Johannes Berg
2
0.56%
1
3.85%
Gabor Juhos
1
0.28%
1
3.85%
Total
357
100.00%
26
100.00%



static void ath9k_stop(struct ieee80211_hw *hw)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	bool prev_idle;

	ath9k_deinit_channel_context(sc);

	ath9k_rng_stop(sc);

	mutex_lock(&sc->mutex);

	ath_cancel_work(sc);

	if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
		ath_dbg(common, ANY, "Device not present\n");
		mutex_unlock(&sc->mutex);
		return;
	}

	/* Ensure HW is awake when we try to shut it down. */
	ath9k_ps_wakeup(sc);

	spin_lock_bh(&sc->sc_pcu_lock);

	/* prevent tasklets to enable interrupts once we disable them */
	ah->imask &= ~ATH9K_INT_GLOBAL;

	/* make sure h/w will not generate any interrupt
         * before setting the invalid flag. */
	ath9k_hw_disable_interrupts(ah);

	spin_unlock_bh(&sc->sc_pcu_lock);

	/* we can now sync irq and kill any running tasklets, since we already
         * disabled interrupts and not holding a spin lock */
	synchronize_irq(sc->irq);
	tasklet_kill(&sc->intr_tq);
	tasklet_kill(&sc->bcon_tasklet);

	prev_idle = sc->ps_idle;
	sc->ps_idle = true;

	spin_lock_bh(&sc->sc_pcu_lock);

	if (ah->led_pin >= 0) {
		ath9k_hw_set_gpio(ah, ah->led_pin,
				  (ah->config.led_active_high) ? 0 : 1);
		ath9k_hw_gpio_request_in(ah, ah->led_pin, NULL);
	}

	ath_prepare_reset(sc);

	if (sc->rx.frag) {
		dev_kfree_skb_any(sc->rx.frag);
		sc->rx.frag = NULL;
	}

	if (!ah->curchan)
		ah->curchan = ath9k_cmn_get_channel(hw, ah,
						    &sc->cur_chan->chandef);

	ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);

	set_bit(ATH_OP_INVALID, &common->op_flags);

	ath9k_hw_phy_disable(ah);

	ath9k_hw_configpcipowersave(ah, true);

	spin_unlock_bh(&sc->sc_pcu_lock);

	ath9k_ps_restore(sc);

	sc->ps_idle = prev_idle;

	mutex_unlock(&sc->mutex);

	ath_dbg(common, CONFIG, "Driver halt\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
161
46.13%
10
32.26%
Sujith Manoharan
79
22.64%
9
29.03%
Luis R. Rodriguez
42
12.03%
4
12.90%
Stanislaw Gruszka
19
5.44%
1
3.23%
Vasanthakumar Thiagarajan
17
4.87%
1
3.23%
Giedrius Statkevičius
13
3.72%
1
3.23%
Jouni Malinen
6
1.72%
1
3.23%
Miaoqing Pan
5
1.43%
1
3.23%
Joe Perches
4
1.15%
2
6.45%
Oleksij Rempel
3
0.86%
1
3.23%
Total
349
100.00%
31
100.00%



static bool ath9k_uses_beacons(int type)
{
	switch (type) {
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_MESH_POINT:
		return true;
	default:
		return false;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ben Greear
29
93.55%
1
33.33%
Felix Fietkau
1
3.23%
1
33.33%
Vasanthakumar Thiagarajan
1
3.23%
1
33.33%
Total
31
100.00%
3
100.00%



static void ath9k_vif_iter_set_beacon(struct ath9k_vif_iter_data *iter_data,
				      struct ieee80211_vif *vif)
{
	/* Use the first (configured) interface, but prefering AP interfaces. */
	if (!iter_data->primary_beacon_vif) {
		iter_data->primary_beacon_vif = vif;
	} else {
		if (iter_data->primary_beacon_vif->type != NL80211_IFTYPE_AP &&
		    vif->type == NL80211_IFTYPE_AP)
			iter_data->primary_beacon_vif = vif;
	}

	iter_data->beacons = true;
	iter_data->nbcnvifs += 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Benjamin Berg
69
100.00%
1
100.00%
Total
69
100.00%
1
100.00%



static void ath9k_vif_iter(struct ath9k_vif_iter_data *iter_data,
			   u8 *mac, struct ieee80211_vif *vif)
{
	struct ath_vif *avp = (struct ath_vif *)vif->drv_priv;
	int i;

	if (iter_data->has_hw_macaddr) {
		for (i = 0; i < ETH_ALEN; i++)
			iter_data->mask[i] &=
				~(iter_data->hw_macaddr[i] ^ mac[i]);
	} else {
		memcpy(iter_data->hw_macaddr, mac, ETH_ALEN);
		iter_data->has_hw_macaddr = true;
	}

	if (!vif->bss_conf.use_short_slot)
		iter_data->slottime = 20;

	switch (vif->type) {
	case NL80211_IFTYPE_AP:
		iter_data->naps++;
		if (vif->bss_conf.enable_beacon)
			ath9k_vif_iter_set_beacon(iter_data, vif);
		break;
	case NL80211_IFTYPE_STATION:
		iter_data->nstations++;
		if (avp->assoc && !iter_data->primary_sta)
			iter_data->primary_sta = vif;
		break;
	case NL80211_IFTYPE_OCB:
		iter_data->nocbs++;
		break;
	case NL80211_IFTYPE_ADHOC:
		iter_data->nadhocs++;
		if (vif->bss_conf.enable_beacon)
			ath9k_vif_iter_set_beacon(iter_data, vif);
		break;
	case NL80211_IFTYPE_MESH_POINT:
		iter_data->nmeshes++;
		if (vif->bss_conf.enable_beacon)
			ath9k_vif_iter_set_beacon(iter_data, vif);
		break;
	case NL80211_IFTYPE_WDS:
		iter_data->nwds++;
		break;
	default:
		break;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ben Greear
115
47.72%
1
12.50%
Rajkumar Manoharan
50
20.75%
1
12.50%
Benjamin Berg
26
10.79%
2
25.00%
Felix Fietkau
23
9.54%
1
12.50%
Sujith Manoharan
18
7.47%
2
25.00%
Jan Kaisrlik
9
3.73%
1
12.50%
Total
241
100.00%
8
100.00%



static void ath9k_update_bssid_mask(struct ath_softc *sc,
				    struct ath_chanctx *ctx,
				    struct ath9k_vif_iter_data *iter_data)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp;
	int i;

	if (!ath9k_is_chanctx_enabled())
		return;

	list_for_each_entry(avp, &ctx->vifs, list) {
		if (ctx->nvifs_assigned != 1)
			continue;

		if (!iter_data->has_hw_macaddr)
			continue;

		ether_addr_copy(common->curbssid, avp->bssid);

		/* perm_addr will be used as the p2p device address. */
		for (i = 0; i < ETH_ALEN; i++)
			iter_data->mask[i] &=
				~(iter_data->hw_macaddr[i] ^
				  sc->hw->wiphy->perm_addr[i]);
	}
}

Contributors
Person
Tokens
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CommitProp
Sujith Manoharan
128
100.00%
1
100.00%
Total
128
100.00%
1
100.00%

/* Called with sc->mutex held. */


void ath9k_calculate_iter_data(struct ath_softc *sc,
			       struct ath_chanctx *ctx,
			       struct ath9k_vif_iter_data *iter_data)
{
	struct ath_vif *avp;

	/*
         * The hardware will use primary station addr together with the
         * BSSID mask when matching addresses.
         */
	memset(iter_data, 0, sizeof(*iter_data));
	eth_broadcast_addr(iter_data->mask);
	iter_data->slottime = 9;

	list_for_each_entry(avp, &ctx->vifs, list)
		ath9k_vif_iter(iter_data, avp->vif->addr, avp->vif);

	ath9k_update_bssid_mask(sc, ctx, iter_data);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ben Greear
50
59.52%
2
33.33%
Rajkumar Manoharan
23
27.38%
1
16.67%
Sujith Manoharan
9
10.71%
1
16.67%
Joe Perches
1
1.19%
1
16.67%
Benjamin Berg
1
1.19%
1
16.67%
Total
84
100.00%
6
100.00%



static void ath9k_set_assoc_state(struct ath_softc *sc,
				  struct ieee80211_vif *vif, bool changed)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp = (struct ath_vif *)vif->drv_priv;
	unsigned long flags;

	set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);

	ether_addr_copy(common->curbssid, avp->bssid);
	common->curaid = avp->aid;
	ath9k_hw_write_associd(sc->sc_ah);

	if (changed) {
		common->last_rssi = ATH_RSSI_DUMMY_MARKER;
		sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;

		spin_lock_irqsave(&sc->sc_pm_lock, flags);
		sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
		spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
	}

	if (ath9k_hw_mci_is_enabled(sc->sc_ah))
		ath9k_mci_update_wlan_channels(sc, false);

	ath_dbg(common, CONFIG,
		"Primary Station interface: %pM, BSSID: %pM\n",
		vif->addr, common->curbssid);
}

Contributors
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Rajkumar Manoharan
86
51.19%
1
10.00%
Ben Greear
45
26.79%
1
10.00%
Sujith Manoharan
27
16.07%
4
40.00%
Javier Cardona
4
2.38%
1
10.00%
Vivek Natarajan
4
2.38%
1
10.00%
Pat Erley
1
0.60%
1
10.00%
Johannes Berg
1
0.60%
1
10.00%
Total
168
100.00%
10
100.00%

#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT


static void ath9k_set_offchannel_state(struct ath_softc *sc)
{
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ieee80211_vif *vif = NULL;

	ath9k_ps_wakeup(sc);

	if (sc->offchannel.state < ATH_OFFCHANNEL_ROC_START)
		vif = sc->offchannel.scan_vif;
	else
		vif = sc->offchannel.roc_vif;

	if (WARN_ON(!vif))
		goto exit;

	eth_zero_addr(common->curbssid);
	eth_broadcast_addr(common->bssidmask);
	memcpy(common->macaddr, vif->addr, ETH_ALEN);
	common->curaid = 0;
	ah->opmode = vif->type;
	ah->imask &= ~ATH9K_INT_SWBA;
	ah->imask &= ~ATH9K_INT_TSFOOR;
	ah->slottime = 9;

	ath_hw_setbssidmask(common);
	ath9k_hw_setopmode(ah);
	ath9k_hw_write_associd(sc->sc_ah);
	ath9k_hw_set_interrupts(ah);
	ath9k_hw_init_global_settings(ah);

exit:
	ath9k_ps_restore(sc);
}
Contributors
Person
Tokens
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Sujith Manoharan
174
99.43%
2
66.67%
Benjamin Berg
1
0.57%
1
33.33%
Total
175
100.00%
3
100.00%

#endif

/* Called with sc->mutex held. */


void ath9k_calculate_summary_state(struct ath_softc *sc,
				   struct ath_chanctx *ctx)
{
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_vif_iter_data iter_data;

	ath_chanctx_check_active(sc, ctx);

	if (ctx != sc->cur_chan)
		return;

#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
	if (ctx == &sc->offchannel.chan)
		return ath9k_set_offchannel_state(sc);
#endif

	ath9k_ps_wakeup(sc);
	ath9k_calculate_iter_data(sc, ctx, &iter_data);

	if (iter_data.has_hw_macaddr)
		memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN);

	memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
	ath_hw_setbssidmask(common);

	if (iter_data.naps > 0) {
		ath9k_hw_set_tsfadjust(ah, true);
		ah->opmode = NL80211_IFTYPE_AP;
	} else {
		ath9k_hw_set_tsfadjust(ah, false);
		if (iter_data.beacons)
			ath9k_beacon_ensure_primary_slot(sc);

		if (iter_data.nmeshes)
			ah->opmode = NL80211_IFTYPE_MESH_POINT;
		else if (iter_data.nocbs)
			ah->opmode = NL80211_IFTYPE_OCB;
		else if (iter_data.nwds)
			ah->opmode = NL80211_IFTYPE_AP;
		else if (iter_data.nadhocs)
			ah->opmode = NL80211_IFTYPE_ADHOC;
		else
			ah->opmode = NL80211_IFTYPE_STATION;
	}

	ath9k_hw_setopmode(ah);

	ctx->switch_after_beacon = false;
	if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0)
		ah->imask |= ATH9K_INT_TSFOOR;
	else {
		ah->imask &= ~ATH9K_INT_TSFOOR;
		if (iter_data.naps == 1 && iter_data.beacons)
			ctx->switch_after_beacon = true;
	}

	if (ah->opmode == NL80211_IFTYPE_STATION) {
		bool changed = (iter_data.primary_sta != ctx->primary_sta);

		if (iter_data.primary_sta) {
			iter_data.primary_beacon_vif = iter_data.primary_sta;
			iter_data.beacons = true;
			ath9k_set_assoc_state(sc, iter_data.primary_sta,
					      changed);
			ctx->primary_sta = iter_data.primary_sta;
		} else {
			ctx->primary_sta = NULL;
			eth_zero_addr(common->curbssid);
			common->curaid = 0;
			ath9k_hw_write_associd(sc->sc_ah);
			if (ath9k_hw_mci_is_enabled(sc->sc_ah))
				ath9k_mci_update_wlan_channels(sc, true);
		}
	}
	sc->nbcnvifs = iter_data.nbcnvifs;
	ath9k_beacon_config(sc, iter_data.primary_beacon_vif,
			    iter_data.beacons);
	ath9k_hw_set_interrupts(ah);

	if (ah->slottime != iter_data.slottime) {
		ah->slottime = iter_data.slottime;
		ath9k_hw_init_global_settings(ah);
	}

	if (iter_data.primary_sta)
		set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);
	else
		clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);

	ath_dbg(common, CONFIG,
		"macaddr: %pM, bssid: %pM, bssidmask: %pM\n",
		common->macaddr, common->curbssid, common->bssidmask);

	ath9k_ps_restore(sc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
252
49.80%
2
8.33%
Felix Fietkau
85
16.80%
8
33.33%
Sujith Manoharan
72
14.23%
6
25.00%
Ben Greear
28
5.53%
1
4.17%
Benjamin Berg
25
4.94%
1
4.17%
Luis R. Rodriguez
17
3.36%
1
4.17%
Jan Kaisrlik
13
2.57%
1
4.17%
Mohammed Shafi Shajakhan
11
2.17%
1
4.17%
Jouni Malinen
1
0.20%
1
4.17%
Joe Perches
1
0.20%
1
4.17%
Vasanthakumar Thiagarajan
1
0.20%
1
4.17%
Total
506
100.00%
24
100.00%



static void ath9k_tpc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
	int *power = (int *)data;

	if (*power < vif->bss_conf.txpower)
		*power = vif->bss_conf.txpower;
}

Contributors
Person
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CommitProp
Lorenzo Bianconi
49
100.00%
1
100.00%
Total
49
100.00%
1
100.00%

/* Called with sc->mutex held. */


void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif)
{
	int power;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);

	ath9k_ps_wakeup(sc);
	if (ah->tpc_enabled) {
		power = (vif) ? vif->bss_conf.txpower : -1;
		ieee80211_iterate_active_interfaces_atomic(
				sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
				ath9k_tpc_vif_iter, &power);
		if (power == -1)
			power = sc->hw->conf.power_level;
	} else {
		power = sc->hw->conf.power_level;
	}
	sc->cur_chan->txpower = 2 * power;
	ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
	sc->cur_chan->cur_txpower = reg->max_power_level;
	ath9k_ps_restore(sc);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Lorenzo Bianconi
147
100.00%
1
100.00%
Total
147
100.00%
1
100.00%



static void ath9k_assign_hw_queues(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif)
{
	int i;

	if (!ath9k_is_chanctx_enabled())
		return;

	for (i = 0; i < IEEE80211_NUM_ACS; i++)
		vif->hw_queue[i] = i;

	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_MESH_POINT)
		vif->cab_queue = hw->queues - 2;
	else
		vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
73
92.41%
2
66.67%
Chun-Yeow Yeoh
6
7.59%
1
33.33%
Total
79
100.00%
3
100.00%



static int ath9k_add_interface(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath_vif *avp = (void *)vif->drv_priv;
	struct ath_node *an = &avp->mcast_node;

	mutex_lock(&sc->mutex);

	if (IS_ENABLED(CONFIG_ATH9K_TX99)) {
		if (sc->cur_chan->nvifs >= 1) {
			mutex_unlock(&sc->mutex);
			return -EOPNOTSUPP;
		}
		sc->tx99_vif = vif;
	}

	ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
	sc->cur_chan->nvifs++;

	if (vif->type == NL80211_IFTYPE_STATION && ath9k_is_chanctx_enabled())
		vif->driver_flags |= IEEE80211_VIF_GET_NOA_UPDATE;

	if (ath9k_uses_beacons(vif->type))
		ath9k_beacon_assign_slot(sc, vif);

	avp->vif = vif;
	if (!ath9k_is_chanctx_enabled()) {
		avp->chanctx = sc->cur_chan;
		list_add_tail(&avp->list, &avp->chanctx->vifs);
	}

	ath9k_calculate_summary_state(sc, avp->chanctx);

	ath9k_assign_hw_queues(hw, vif);

	ath9k_set_txpower(sc, vif);

	an->sc = sc;
	an->sta = NULL;
	an->vif = vif;
	an->no_ps_filter = true;
	ath_tx_node_init(sc, an);

	mutex_unlock(&sc->mutex);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
163
60.59%
4
19.05%
Felix Fietkau
38
14.13%
4
19.05%
Ben Greear
17
6.32%
2
9.52%
Janusz Dziedzic
17
6.32%
1
4.76%
Sujith Manoharan
12
4.46%
4
19.05%
Luis R. Rodriguez
8
2.97%
3
14.29%
Lorenzo Bianconi
7
2.60%
1
4.76%
Mohammed Shafi Shajakhan
6
2.23%
1
4.76%
Masahiro Yamada
1
0.37%
1
4.76%
Total
269
100.00%
21
100.00%



static int ath9k_change_interface(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  enum nl80211_iftype new_type,
				  bool p2p)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp = (void *)vif->drv_priv;

	mutex_lock(&sc->mutex);

	if (IS_ENABLED(CONFIG_ATH9K_TX99)) {
		mutex_unlock(&sc->mutex);
		return -EOPNOTSUPP;
	}

	ath_dbg(common, CONFIG, "Change Interface\n");

	if (ath9k_uses_beacons(vif->type))
		ath9k_beacon_remove_slot(sc, vif);

	vif->type = new_type;
	vif->p2p = p2p;

	if (ath9k_uses_beacons(vif->type))
		ath9k_beacon_assign_slot(sc, vif);

	ath9k_assign_hw_queues(hw, vif);
	ath9k_calculate_summary_state(sc, avp->chanctx);

	ath9k_set_txpower(sc, vif);

	mutex_unlock(&sc->mutex);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
113
65.32%
2
18.18%
Senthil Balasubramanian
24
13.87%
2
18.18%
Sujith Manoharan
16
9.25%
2
18.18%
Lorenzo Bianconi
7
4.05%
1
9.09%
Luis R. Rodriguez
6
3.47%
1
9.09%
Pavel Roskin
5
2.89%
1
9.09%
Masahiro Yamada
1
0.58%
1
9.09%
Vasanthakumar Thiagarajan
1
0.58%
1
9.09%
Total
173
100.00%
11
100.00%



static void ath9k_remove_interface(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp = (void *)vif->drv_priv;

	ath_dbg(common, CONFIG, "Detach Interface\n");

	mutex_lock(&sc->mutex);

	ath9k_p2p_remove_vif(sc, vif);

	sc->cur_chan->nvifs--;
	sc->tx99_vif = NULL;
	if (!ath9k_is_chanctx_enabled())
		list_del(&avp->list);

	if (ath9k_uses_beacons(vif->type))
		ath9k_beacon_remove_slot(sc, vif);

	ath_tx_node_cleanup(sc, &avp->mcast_node);

	ath9k_calculate_summary_state(sc, avp->chanctx);

	ath9k_set_txpower(sc, NULL);

	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
79
52.32%
1
14.29%
Simon Wunderlich
50
33.11%
1
14.29%
Ben Greear
9
5.96%
1
14.29%
Lorenzo Bianconi
7
4.64%
1
14.29%
Sujith Manoharan
6
3.97%
3
42.86%
Total
151
100.00%
7
100.00%



static void ath9k_enable_ps(struct ath_softc *sc)
{
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);

	if (IS_ENABLED(CONFIG_ATH9K_TX99))
		return;

	sc->ps_enabled = true;
	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
		if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
			ah->imask |= ATH9K_INT_TIM_TIMER;
			ath9k_hw_set_interrupts(ah);
		}
		ath9k_hw_setrxabort(ah, 1);
	}
	ath_dbg(common, PS, "PowerSave enabled\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Simon Wunderlich
51
51.00%
2
50.00%
Rajkumar Manoharan
48
48.00%
1
25.00%
Masahiro Yamada
1
1.00%
1
25.00%
Total
100
100.00%
4
100.00%



static void ath9k_disable_ps(struct ath_softc *sc)
{
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);

	if (IS_ENABLED(CONFIG_ATH9K_TX99))
		return;

	sc->ps_enabled = false;
	ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
		ath9k_hw_setrxabort(ah, 0);
		sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
				  PS_WAIT_FOR_CAB |
				  PS_WAIT_FOR_PSPOLL_DATA |
				  PS_WAIT_FOR_TX_ACK);
		if (ah->imask & ATH9K_INT_TIM_TIMER) {
			ah->imask &= ~ATH9K_INT_TIM_TIMER;
			ath9k_hw_set_interrupts(ah);
		}
	}
	ath_dbg(common, PS, "PowerSave disabled\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
66
55.46%
2
12.50%
Felix Fietkau
26
21.85%
6
37.50%
Luis R. Rodriguez
17
14.29%
4
25.00%
Sujith Manoharan
4
3.36%
1
6.25%
Jouni Malinen
4
3.36%
1
6.25%
Masahiro Yamada
1
0.84%
1
6.25%
Vasanthakumar Thiagarajan
1
0.84%
1
6.25%
Total
119
100.00%
16
100.00%



static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ieee80211_conf *conf = &hw->conf;
	struct ath_chanctx *ctx = sc->cur_chan;

	ath9k_ps_wakeup(sc);
	mutex_lock(&sc->mutex);

	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
		sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
		if (sc->ps_idle) {
			ath_cancel_work(sc);
			ath9k_stop_btcoex(sc);
		} else {
			ath9k_start_btcoex(sc);
			/*
                         * The chip needs a reset to properly wake up from
                         * full sleep
                         */
			ath_chanctx_set_channel(sc, ctx, &ctx->chandef);
		}
	}

	/*
         * We just prepare to enable PS. We have to wait until our AP has
         * ACK'd our null data frame to disable RX otherwise we'll ignore
         * those ACKs and end up retransmitting the same null data frames.
         * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
         */
	if (changed & IEEE80211_CONF_CHANGE_PS) {
		unsigned long flags;
		spin_lock_irqsave(&sc->sc_pm_lock, flags);
		if (conf->flags & IEEE80211_CONF_PS)
			ath9k_enable_ps(sc);
		else
			ath9k_disable_ps(sc);
		spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
	}

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
		if (conf->flags & IEEE80211_CONF_MONITOR) {
			ath_dbg(common, CONFIG, "Monitor mode is enabled\n");
			sc->sc_ah->is_monitoring = true;
		} else {
			ath_dbg(common, CONFIG, "Monitor mode is disabled\n");
			sc->sc_ah->is_monitoring = false;
		}
	}

	if (!ath9k_is_chanctx_enabled() && (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
		ctx->offchannel = !!(conf->flags & IEEE80211_CONF_OFFCHANNEL);
		ath_chanctx_set_channel(sc, ctx, &hw->conf.chandef);
	}

	mutex_unlock(&sc->mutex);
	ath9k_ps_restore(sc);

	return 0;
}

Contributors
Person
Tokens
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CommitProp
Rajkumar Manoharan
224
74.67%
2
12.50%
Felix Fietkau
20
6.67%
4
25.00%
Jouni Malinen
18
6.00%
3
18.75%
Johannes Berg
11
3.67%
2
12.50%
Luis R. Rodriguez
11
3.67%
2
12.50%
Vasanthakumar Thiagarajan
9
3.00%
1
6.25%
Sujith Manoharan
7
2.33%
2
12.50%
Total
300
100.00%
16
100.00%


#define SUPPORTED_FILTERS			\
	(FIF_ALLMULTI |                         \
        FIF_CONTROL |                           \
        FIF_PSPOLL |                            \
        FIF_OTHER_BSS |                         \
        FIF_BCN_PRBRESP_PROMISC |               \
        FIF_PROBE_REQ |                         \
        FIF_FCSFAIL)

/* FIXME: sc->sc_full_reset ? */


static void ath9k_configure_filter(struct ieee80211_hw *hw,
				   unsigned int changed_flags,
				   unsigned int *total_flags,
				   u64 multicast)
{
	struct ath_softc *sc = hw->priv;
	struct ath_chanctx *ctx;
	u32 rfilt;

	changed_flags &= SUPPORTED_FILTERS;
	*total_flags &= SUPPORTED_FILTERS;

	spin_lock_bh(&sc->chan_lock);
	ath_for_each_chanctx(sc, ctx)
		ctx->rxfilter = *total_flags;
#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
	sc->offchannel.chan.rxfilter = *total_flags;
#endif
	spin_unlock_bh(&sc->chan_lock);

	ath9k_ps_wakeup(sc);
	rfilt = ath_calcrxfilter(sc);
	ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
	ath9k_ps_restore(sc);

	ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n",
		rfilt);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
86
63.24%
1
20.00%
Janusz Dziedzic
28
20.59%
2
40.00%
Sujith Manoharan
15
11.03%
1
20.00%
Felix Fietkau
7
5.15%
1
20.00%
Total
136
100.00%
5
100.00%



static int ath9k_sta_add(struct ieee80211_hw *hw,
			 struct ieee80211_vif *vif,
			 struct ieee80211_sta *sta)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_node *an = (struct ath_node *) sta->drv_priv;
	struct ieee80211_key_conf ps_key = { };
	int key;

	ath_node_attach(sc, sta, vif);

	if (vif->type != NL80211_IFTYPE_AP &&
	    vif->type != NL80211_IFTYPE_AP_VLAN)
		return 0;

	key = ath_key_config(common, vif, sta, &ps_key);
	if (key > 0) {
		an->ps_key = key;
		an->key_idx[0] = key;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
89
67.94%
1
50.00%
Felix Fietkau
42
32.06%
1
50.00%
Total
131
100.00%
2
100.00%



static void ath9k_del_ps_key(struct ath_softc *sc,
			     struct ieee80211_vif *vif,
			     struct ieee80211_sta *sta)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_node *an = (struct ath_node *) sta->drv_priv;
	struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };

	if (!an->ps_key)
	    return;

	ath_key_delete(common, &ps_key);
	an->ps_key = 0;
	an->key_idx[0] = 0;
}

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Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
60
65.93%
2
50.00%
Felix Fietkau
31
34.07%
2
50.00%
Total
91
100.00%
4
100.00%



static int ath9k_sta_remove(struct ieee80211_hw *hw,
			    struct ieee80211_vif *vif,
			    struct ieee80211_sta *sta)
{
	struct ath_softc *sc = hw->priv;

	ath9k_del_ps_key(sc, vif, sta);
	ath_node_detach(sc, sta);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Johannes Berg
33
67.35%
2
28.57%
Felix Fietkau
11
22.45%
2
28.57%
Vasanthakumar Thiagarajan
4
8.16%
2
28.57%
Luis R. Rodriguez
1
2.04%
1
14.29%
Total
49
100.00%
7
100.00%



static int ath9k_sta_state(struct ieee80211_hw *hw,
			   struct ieee80211_vif *vif,
			   struct ieee80211_sta *sta,
			   enum ieee80211_sta_state old_state,
			   enum ieee80211_sta_state new_state)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	int ret = 0;

	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
		ret = ath9k_sta_add(hw, vif, sta);
		ath_dbg(common, CONFIG,
			"Add station: %pM\n", sta->addr);
	} else if (old_state == IEEE80211_STA_NONE &&
		   new_state == IEEE80211_STA_NOTEXIST) {
		ret = ath9k_sta_remove(hw, vif, sta);
		ath_dbg(common, CONFIG,
			"Remove station: %pM\n", sta->addr);
	}

	if (ath9k_is_chanctx_enabled()) {
		if (vif->type == NL80211_IFTYPE_STATION) {
			if (old_state == IEEE80211_STA_ASSOC &&
			    new_state == IEEE80211_STA_AUTHORIZED)
				ath_chanctx_event(sc, vif,
						  ATH_CHANCTX_EVENT_AUTHORIZED);
		}
	}

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
163
97.60%
3
75.00%
Felix Fietkau
4
2.40%
1
25.00%
Total
167
100.00%
4
100.00%



static void ath9k_sta_set_tx_filter(struct ath_hw *ah,
				    struct ath_node *an,
				    bool set)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) {
		if (!an->key_idx[i])
			continue;
		ath9k_hw_set_tx_filter(ah, an->key_idx[i], set);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
67
100.00%
1
100.00%
Total
67
100.00%
1
100.00%



static void ath9k_sta_notify(struct ieee80211_hw *hw,
			 struct ieee80211_vif *vif,
			 enum sta_notify_cmd cmd,
			 struct ieee80211_sta *sta)
{
	struct ath_softc *sc = hw->priv;
	struct ath_node *an = (struct ath_node *) sta->drv_priv;

	switch (cmd) {
	case STA_NOTIFY_SLEEP:
		an->sleeping = true;
		ath_tx_aggr_sleep(sta, sc, an);
		ath9k_sta_set_tx_filter(sc->sc_ah, an, true);
		break;
	case STA_NOTIFY_AWAKE:
		ath9k_sta_set_tx_filter(sc->sc_ah, an, false);
		an->sleeping = false;
		ath_tx_aggr_wakeup(sc, an);
		break;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
88
78.57%
1
25.00%
Rajkumar Manoharan
22
19.64%
2
50.00%
Johannes Berg
2
1.79%
1
25.00%
Total
112
100.00%
4
100.00%



static int ath9k_conf_tx(struct ieee80211_hw *hw,
			 struct ieee80211_vif *vif, u16 queue,
			 const struct ieee80211_tx_queue_params *params)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_txq *txq;
	struct ath9k_tx_queue_info qi;
	int ret = 0;

	if (queue >= IEEE80211_NUM_ACS)
		return 0;

	txq = sc->tx.txq_map[queue];

	ath9k_ps_wakeup(sc);
	mutex_lock(&sc->mutex);

	memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));

	qi.tqi_aifs = params->aifs;
	qi.tqi_cwmin = params->cw_min;
	qi.tqi_cwmax = params->cw_max;
	qi.tqi_burstTime = params->txop * 32;

	ath_dbg(common, CONFIG,
		"Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
		queue, txq->axq_qnum, params->aifs, params->cw_min,
		params->cw_max, params->txop);

	ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime);
	ret = ath_txq_update(sc, txq->axq_qnum, &qi);
	if (ret)
		ath_err(common, "TXQ Update failed\n");

	mutex_unlock(&sc->mutex);
	ath9k_ps_restore(sc);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Vasanthakumar Thiagarajan
108
48.21%
2
11.76%
Felix Fietkau
47
20.98%
5
29.41%
Sujith Manoharan
23
10.27%
3
17.65%
Johannes Berg
16
7.14%
1
5.88%
Luis R. Rodriguez
14
6.25%
1
5.88%
Jouni Malinen
7
3.12%
1
5.88%
Eliad Peller
5
2.23%
1
5.88%
Joe Perches
4
1.79%
3
17.65%
Total
224
100.00%
17
100.00%



static int ath9k_set_key(struct ieee80211_hw *hw,
			 enum set_key_cmd cmd,
			 struct ieee80211_vif *vif,
			 struct ieee80211_sta *sta,
			 struct ieee80211_key_conf *key)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_node *an = NULL;
	int ret = 0, i;

	if (ath9k_modparam_nohwcrypt)
		return -ENOSPC;

	if ((vif->type == NL80211_IFTYPE_ADHOC ||
	     vif->type == NL80211_IFTYPE_MESH_POINT) &&
	    (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
	     key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
		/*
                 * For now, disable hw crypto for the RSN IBSS group keys. This
                 * could be optimized in the future to use a modified key cache
                 * design to support per-STA RX GTK, but until that gets
                 * implemented, use of software crypto for group addressed
                 * frames is a acceptable to allow RSN IBSS to be used.
                 */
		return -EOPNOTSUPP;
	}

	mutex_lock(&sc->mutex);
	ath9k_ps_wakeup(sc);
	ath_dbg(common, CONFIG, "Set HW Key %d\n", cmd);
	if (sta)
		an = (struct ath_node *)sta->drv_priv;

	switch (cmd) {
	case SET_KEY:
		if (sta)
			ath9k_del_ps_key(sc, vif, sta);

		key->hw_key_idx = 0;
		ret = ath_key_config(common, vif, sta, key);
		if (ret >= 0) {
			key->hw_key_idx = ret;
			/* push IV and Michael MIC generation to stack */
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
			if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
				key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
			if (sc->sc_ah->sw_mgmt_crypto_tx &&
			    key->cipher == WLAN_CIPHER_SUITE_CCMP)
				key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
			ret = 0;
		}
		if (an && key->hw_key_idx) {
			for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) {
				if (an->key_idx[i])
					continue;
				an->key_idx[i] = key->hw_key_idx;
				break;
			}
			WARN_ON(i == ARRAY_SIZE(an->key_idx));
		}
		break;
	case DISABLE_KEY:
		ath_key_delete(common, key);
		if (an) {
			for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) {
				if (an->key_idx[i] != key->hw_key_idx)
					continue;
				an->key_idx[i] = 0;
				break;
			}
		}
		key->hw_key_idx = 0;
		break;
	default:
		ret = -EINVAL;
	}

	ath9k_ps_restore(sc);
	mutex_unlock(&sc->mutex);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rajkumar Manoharan
186
45.15%
5
23.81%
Johannes Berg
143
34.71%
3
14.29%
Jouni Malinen
38
9.22%
1
4.76%
Felix Fietkau
15
3.64%
2
9.52%
Luis R. Rodriguez
14
3.40%
2
9.52%
Chun-Yeow Yeoh
9
2.18%
2
9.52%
Joe Perches
2
0.49%
2
9.52%
Sujith Manoharan
2
0.49%
1
4.76%
Oleksij Rempel
1
0.24%
1
4.76%
John W. Linville
1
0.24%
1
4.76%
Bruno Randolf
1
0.24%
1
4.76%
Total
412
100.00%
21
100.00%



static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_bss_conf *bss_conf,
				   u32 changed)
{

#define CHECK_ANI				\
	(BSS_CHANGED_ASSOC |                    \
         BSS_CHANGED_IBSS |                     \
         BSS_CHANGED_BEACON_ENABLED)

	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath_vif *avp = (void *)vif->drv_priv;
	int slottime;

	ath9k_ps_wakeup(sc);
	mutex_lock(&sc->mutex);

	if (changed & BSS_CHANGED_ASSOC) {
		ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n",
			bss_conf->bssid, bss_conf->assoc);

		memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
		avp->aid = bss_conf->aid;
		avp->assoc = bss_conf->assoc;

		ath9k_calculate_summary_state(sc, avp->chanctx);
	}

	if ((changed & BSS_CHANGED_IBSS) ||
	      (changed & BSS_CHANGED_OCB)) {
		memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
		common->curaid = bss_conf->aid;
		ath9k_hw_write_associd(sc->sc_ah);
	}

	if ((changed & BSS_CHANGED_BEACON_ENABLED) ||
	    (changed & BSS_CHANGED_BEACON_INT) ||
	    (changed & BSS_CHANGED_BEACON_INFO)) {
		ath9k_calculate_summary_state(sc, avp->chanctx);
	}

	if ((avp->chanctx == sc->cur_chan) &&
	    (changed & BSS_CHANGED_ERP_SLOT)) {
		if (bss_conf->use_short_slot)
			slottime = 9;
		else
			slottime = 20;

		if (vif->type == NL80211_IFTYPE_AP) {
			/*
                         * Defer update, so that connected stations can adjust
                         * their settings at the same time.
                         * See beacon.c for more details
                         */
			sc->beacon.slottime = slottime;
			sc->beacon.updateslot = UPDATE;
		} else {
			ah->slottime = slottime;
			ath9k_hw_init_global_settings(ah);
		}
	}

	if (changed & BSS_CHANGED_P2P_PS)
		ath9k_p2p_bss_info_changed(sc, vif);

	if (changed & CHECK_ANI)
		ath_check_ani(sc);

	if (changed & BSS_CHANGED_TXPOWER) {
		ath_dbg(common, CONFIG, "vif %pM power %d dbm power_type %d\n",
			vif->addr, bss_conf->txpower, bss_conf->txpower_type);
		ath9k_set_txpower(sc, vif);
	}

	mutex_unlock(&sc->mutex);
	ath9k_ps_restore(sc);


#undef CHECK_ANI
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
98
26.06%
5
18.52%
Sujith Manoharan
76
20.21%
8
29.63%
Rajkumar Manoharan
73
19.41%
5
18.52%
Johannes Berg
52
13.83%
2
7.41%
Lorenzo Bianconi
36
9.57%
1
3.70%
Vasanthakumar Thiagarajan
14
3.72%
1
3.70%
Luis R. Rodriguez
11
2.93%
2
7.41%
Jan Kaisrlik
8
2.13%
1
3.70%
Jouni Malinen
8
2.13%
2
7.41%
Total
376
100.00%
27
100.00%



static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_vif *avp = (void *)vif->drv_priv;
	u64 tsf;

	mutex_lock(&sc->mutex);
	ath9k_ps_wakeup(sc);
	/* Get current TSF either from HW or kernel time. */
	if (sc->cur_chan == avp->chanctx) {
		tsf = ath9k_hw_gettsf64(sc->sc_ah);
	} else {
		tsf = sc->cur_chan->tsf_val +
		      ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, NULL);
	}
	tsf += le64_to_cpu(avp->tsf_adjust);
	ath9k_ps_restore(sc);
	mutex_unlock(&sc->mutex);

	return tsf;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Benjamin Berg
58
46.77%
2
22.22%
Sujith Manoharan
27
21.77%
2
22.22%
Luis R. Rodriguez
17
13.71%
1
11.11%
Vasanthakumar Thiagarajan
12
9.68%
1
11.11%
Eliad Peller
5
4.03%
1
11.11%
Felix Fietkau
4
3.23%
1
11.11%
Jouni Malinen
1
0.81%
1
11.11%
Total
124
100.00%
9
100.00%



static void ath9k_set_tsf(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
			  u64 tsf)
{
	struct ath_softc *sc = hw->priv;
	struct ath_vif *avp = (void *)vif->drv_priv;

	mutex_lock(&sc->mutex);
	ath9k_ps_wakeup(sc);
	tsf -= le64_to_cpu(avp->tsf_adjust);
	getrawmonotonic(&avp->chanctx->tsf_ts);
	if (sc->cur_chan == avp->chanctx)
		ath9k_hw_settsf64(sc->sc_ah, tsf);
	avp->chanctx->tsf_val = tsf;
	ath9k_ps_restore(sc);
	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Benjamin Berg
50
44.25%
2
25.00%
Sujith Manoharan
27
23.89%
2
25.00%
Alina Friedrichsen
23
20.35%
1
12.50%
Jouni Malinen
6
5.31%
1
12.50%
Eliad Peller
5
4.42%
1
12.50%
Felix Fietkau
2
1.77%
1
12.50%
Total
113
100.00%
8
100.00%



static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_vif *avp = (void *)vif->drv_priv;

	mutex_lock(&sc->mutex);

	ath9k_ps_wakeup(sc);
	getrawmonotonic(&avp->chanctx->tsf_ts);
	if (sc->cur_chan == avp->chanctx)
		ath9k_hw_reset_tsf(sc->sc_ah);
	avp->chanctx->tsf_val = 0;
	ath9k_ps_restore(sc);

	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Benjamin Berg
41
41.41%
1
12.50%
Sujith Manoharan
17
17.17%
1
12.50%
Luis R. Rodriguez
15
15.15%
2
25.00%
Vasanthakumar Thiagarajan
13
13.13%
1
12.50%
Jouni Malinen
6
6.06%
1
12.50%
Eliad Peller
5
5.05%
1
12.50%
Felix Fietkau
2
2.02%
1
12.50%
Total
99
100.00%
8
100.00%



static int ath9k_ampdu_action(struct ieee80211_hw *hw,
			      struct ieee80211_vif *vif,
			      struct ieee80211_ampdu_params *params)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	bool flush = false;
	int ret = 0;
	struct ieee80211_sta *sta = params->sta;
	struct ath_node *an = (struct ath_node *)sta->drv_priv;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
	u16 *ssn = &params->ssn;
	struct ath_atx_tid *atid;

	mutex_lock(&sc->mutex);

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
		break;
	case IEEE80211_AMPDU_RX_STOP:
		break;
	case IEEE80211_AMPDU_TX_START:
		if (ath9k_is_chanctx_enabled()) {
			if (test_bit(ATH_OP_SCANNING, &common->op_flags)) {
				ret = -EBUSY;
				break;
			}
		}
		ath9k_ps_wakeup(sc);
		ret = ath_tx_aggr_start(sc, sta, tid, ssn);
		if (!ret)
			ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
		ath9k_ps_restore(sc);
		break;
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
		flush = true;
	case IEEE80211_AMPDU_TX_STOP_CONT:
		ath9k_ps_wakeup(sc);
		ath_tx_aggr_stop(sc, sta, tid);
		if (!flush)
			ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
		ath9k_ps_restore(sc);
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
		atid = ath_node_to_tid(an, tid);
		atid->baw_size = IEEE80211_MIN_AMPDU_BUF <<
			        sta->ht_cap.ampdu_factor;
		break;
	default:
		ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
	}

	mutex_unlock(&sc->mutex);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Vasanthakumar Thiagarajan
66
22.45%
1
4.55%
Sujith Manoharan
63
21.43%
4
18.18%
Luis R. Rodriguez
42
14.29%
4
18.18%
Sara Sharon
35
11.90%
1
4.55%
Toke Höiland-Jörgensen
34
11.56%
1
4.55%
Felix Fietkau
26
8.84%
4
18.18%
Johannes Berg
21
7.14%
5
22.73%
Jouni Malinen
6
2.04%
1
4.55%
Joe Perches
1
0.34%
1
4.55%
Total
294
100.00%
22
100.00%



static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
			     struct survey_info *survey)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ieee80211_supported_band *sband;
	struct ieee80211_channel *chan;
	int pos;

	if (IS_ENABLED(CONFIG_ATH9K_TX99))
		return -EOPNOTSUPP;

	spin_lock_bh(&common->cc_lock);
	if (idx == 0)
		ath_update_survey_stats(sc);

	sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
	if (sband && idx >= sband->n_channels) {
		idx -= sband->n_channels;
		sband = NULL;
	}

	if (!sband)
		sband = hw->wiphy->bands[NL80211_BAND_5GHZ];

	if (!sband || idx >= sband->n_channels) {
		spin_unlock_bh(&common->cc_lock);
		return -ENOENT;
	}

	chan = &sband->channels[idx];
	pos = chan->hw_value;
	memcpy(survey, &sc->survey[pos], sizeof(*survey));
	survey->channel = chan;
	spin_unlock_bh(&common->cc_lock);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
136
65.07%
4
44.44%
Benoit Papillault
57
27.27%
1
11.11%
Luis R. Rodriguez
10
4.78%
1
11.11%
Sujith Manoharan
3
1.44%
1
11.11%
Johannes Berg
2
0.96%
1
11.11%
Masahiro Yamada
1
0.48%
1
11.11%
Total
209
100.00%
9
100.00%



static void ath9k_enable_dynack(struct ath_softc *sc)
{
#ifdef CONFIG_ATH9K_DYNACK
	u32 rfilt;
	struct ath_hw *ah = sc->sc_ah;

	ath_dynack_reset(ah);

	ah->dynack.enabled = true;
	rfilt = ath_calcrxfilter(sc);
	ath9k_hw_setrxfilter(ah, rfilt);
#endif
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Lorenzo Bianconi
55
100.00%
1
100.00%
Total
55
100.00%
1
100.00%



static void ath9k_set_coverage_class(struct ieee80211_hw *hw,
				     s16 coverage_class)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;

	if (IS_ENABLED(CONFIG_ATH9K_TX99))
		return;

	mutex_lock(&sc->mutex);

	if (coverage_class >= 0) {
		ah->coverage_class = coverage_class;
		if (ah->dynack.enabled) {
			u32 rfilt;

			ah->dynack.enabled = false;
			rfilt = ath_calcrxfilter(sc);
			ath9k_hw_setrxfilter(ah, rfilt);
		}
		ath9k_ps_wakeup(sc);
		ath9k_hw_init_global_settings(ah);
		ath9k_ps_restore(sc);
	} else if (!ah->dynack.enabled) {
		ath9k_enable_dynack(sc);
	}

	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Lorenzo Bianconi
60
43.80%
1
12.50%
Felix Fietkau
58
42.34%
2
25.00%
Luis R. Rodriguez
16
11.68%
2
25.00%
John W. Linville
1
0.73%
1
12.50%
Sujith Manoharan
1
0.73%
1
12.50%
Masahiro Yamada
1
0.73%
1
12.50%
Total
137
100.00%
8
100.00%



static bool ath9k_has_tx_pending(struct ath_softc *sc,
				 bool sw_pending)
{
	int i, npend = 0;

	for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
		if (!ATH_TXQ_SETUP(sc, i))
			continue;

		npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i],
						 sw_pending);
		if (npend)
			break;
	}

	return !!npend;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
69
90.79%
1
33.33%
Sujith Manoharan
5
6.58%
1
33.33%
Geert Uytterhoeven
2
2.63%
1
33.33%
Total
76
100.00%
3
100.00%



static void ath9k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			u32 queues, bool drop)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);

	if (ath9k_is_chanctx_enabled()) {
		if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags))
			goto flush;

		/*
                 * If MCC is active, extend the flush timeout
                 * and wait for the HW/SW queues to become
                 * empty. This needs to be done outside the
                 * sc->mutex lock to allow the channel scheduler
                 * to switch channel contexts.
                 *
                 * The vif queues have been stopped in mac80211,
                 * so there won't be any incoming frames.
                 */
		__ath9k_flush(hw, queues, drop, true, true);
		return;
	}
flush:
	mutex_lock(&sc->mutex);
	__ath9k_flush(hw, queues, drop, true, false);
	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
56
50.00%
2
33.33%
Felix Fietkau
26
23.21%
1
16.67%
Vasanthakumar Thiagarajan
22
19.64%
1
16.67%
Emmanuel Grumbach
5
4.46%
1
16.67%
Johannes Berg
3
2.68%
1
16.67%
Total
112
100.00%
6
100.00%



void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop,
		   bool sw_pending, bool timeout_override)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_common *common = ath9k_hw_common(ah);
	int timeout;
	bool drain_txq;

	cancel_delayed_work_sync(&sc->hw_check_work);

	if (ah->ah_flags & AH_UNPLUGGED) {
		ath_dbg(common, ANY, "Device has been unplugged!\n");
		return;
	}

	if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
		ath_dbg(common, ANY, "Device not present\n");
		return;
	}

	spin_lock_bh(&sc->chan_lock);
	if (timeout_override)
		timeout = HZ / 5;
	else
		timeout = sc->cur_chan->flush_timeout;
	spin_unlock_bh(&sc->chan_lock);

	ath_dbg(common, CHAN_CTX,
		"Flush timeout: %d\n", jiffies_to_msecs(timeout));

	if (wait_event_timeout(sc->tx_wait, !ath9k_has_tx_pending(sc, sw_pending),
			       timeout) > 0)
		drop = false;

	if (drop) {
		ath9k_ps_wakeup(sc);
		spin_lock_bh(&sc->sc_pcu_lock);
		drain_txq = ath_drain_all_txq(sc);
		spin_unlock_bh(&sc->sc_pcu_lock);

		if (!drain_txq)
			ath_reset(sc, NULL);

		ath9k_ps_restore(sc);
	}

	ieee80211_queue_delayed_work(hw, &sc->hw_check_work,
				     ATH_HW_CHECK_POLL_INT);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
64
26.12%
5
22.73%
Felix Fietkau
58
23.67%
7
31.82%
Vasanthakumar Thiagarajan
39
15.92%
1
4.55%
Mohammed Shafi Shajakhan
35
14.29%
2
9.09%
Rajkumar Manoharan
19
7.76%
2
9.09%
John W. Linville
13
5.31%
1
4.55%
Senthil Balasubramanian
10
4.08%
1
4.55%
Oleksij Rempel
3
1.22%
1
4.55%
Benoit Papillault
2
0.82%
1
4.55%
Joe Perches
2
0.82%
1
4.55%
Total
245
100.00%
22
100.00%



static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
{
	struct ath_softc *sc = hw->priv;

	return ath9k_has_tx_pending(sc, true);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Vivek Natarajan
24
85.71%
1
33.33%
Sujith Manoharan
4
14.29%
2
66.67%
Total
28
100.00%
3
100.00%



static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ieee80211_vif *vif;
	struct ath_vif *avp;
	struct ath_buf *bf;
	struct ath_tx_status ts;
	bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
	int status;

	vif = sc->beacon.bslot[0];
	if (!vif)
		return 0;

	if (!vif->bss_conf.enable_beacon)
		return 0;

	avp = (void *)vif->drv_priv;

	if (!sc->beacon.tx_processed && !edma) {
		tasklet_disable(&sc->bcon_tasklet);

		bf = avp->av_bcbuf;
		if (!bf || !bf->bf_mpdu)
			goto skip;

		status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts);
		if (status == -EINPROGRESS)
			goto skip;

		sc->beacon.tx_processed = true;
		sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);

skip:
		tasklet_enable(&sc->bcon_tasklet);
	}

	return sc->beacon.tx_last;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
199
93.87%
2
50.00%
Sujith Manoharan
12
5.66%
1
25.00%
Mohammed Shafi Shajakhan
1
0.47%
1
25.00%
Total
212
100.00%
4
100.00%



static int ath9k_get_stats(struct ieee80211_hw *hw,
			   struct ieee80211_low_level_stats *stats)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;
	struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;

	stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
	stats->dot11RTSFailureCount = mib_stats->rts_bad;
	stats->dot11FCSErrorCount = mib_stats->fcs_bad;
	stats->dot11RTSSuccessCount = mib_stats->rts_good;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mohammed Shafi Shajakhan
79
100.00%
1
100.00%
Total
79
100.00%
1
100.00%



static u32 fill_chainmask(u32 cap, u32 new)
{
	u32 filled = 0;
	int i;

	for (i = 0; cap && new; i++, cap >>= 1) {
		if (!(cap & BIT(0)))
			continue;

		if (new & BIT(0))
			filled |= BIT(i);

		new >>= 1;
	}

	return filled;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
75
100.00%
1
100.00%
Total
75
100.00%
1
100.00%



static bool validate_antenna_mask(struct ath_hw *ah, u32 val)
{
	if (AR_SREV_9300_20_OR_LATER(ah))
		return true;

	switch (val & 0x7) {
	case 0x1:
	case 0x3:
	case 0x7:
		return true;
	case 0x2:
		return (ah->caps.rx_chainmask == 1);
	default:
		return false;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
62
100.00%
2
100.00%
Total
62
100.00%
2
100.00%



static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
{
	struct ath_softc *sc = hw->priv;
	struct ath_hw *ah = sc->sc_ah;

	if (ah->caps.rx_chainmask != 1)
		rx_ant |= tx_ant;

	if (!validate_antenna_mask(ah, rx_ant) || !tx_ant)
		return -EINVAL;

	sc->ant_rx = rx_ant;
	sc->ant_tx = tx_ant;

	if (ah->caps.rx_chainmask == 1)
		return 0;

	/* AR9100 runs into calibration issues if not all rx chains are enabled */
	if (AR_SREV_9100(ah))
		ah->rxchainmask = 0x7;
	else
		ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);

	ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant);
	ath9k_cmn_reload_chainmask(ah);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
142
98.61%
2
66.67%
Oleksij Rempel
2
1.39%
1
33.33%
Total
144
100.00%
3
100.00%



static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
{
	struct ath_softc *sc = hw->priv;

	*tx_ant = sc->ant_tx;
	*rx_ant = sc->ant_rx;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
45
100.00%
1
100.00%
Total
45
100.00%
1
100.00%



static void ath9k_sw_scan_start(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif,
				const u8 *mac_addr)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	set_bit(ATH_OP_SCANNING, &common->op_flags);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Simon Wunderlich
22
42.31%
1
25.00%
Oleksij Rempel
15
28.85%
1
25.00%
Johannes Berg
10
19.23%
1
25.00%
Sujith Manoharan
5
9.62%
1
25.00%
Total
52
100.00%
4
100.00%



static void ath9k_sw_scan_complete(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	clear_bit(ATH_OP_SCANNING, &common->op_flags);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Simon Wunderlich
22
46.81%
1
25.00%
Oleksij Rempel
15
31.91%
1
25.00%
Johannes Berg
5
10.64%
1
25.00%
Sujith Manoharan
5
10.64%
1
25.00%
Total
47
100.00%
4
100.00%

#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT



static void ath9k_cancel_pending_offchannel(struct ath_softc *sc)
{
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);

	if (sc->offchannel.roc_vif) {
		ath_dbg(common, CHAN_CTX,
			"%s: Aborting RoC\n", __func__);

		del_timer_sync(&sc->offchannel.timer);
		if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START)
			ath_roc_complete(sc, ATH_ROC_COMPLETE_ABORT);
	}

	if (test_bit(ATH_OP_SCANNING, &common->op_flags)) {
		ath_dbg(common, CHAN_CTX,
			"%s: Aborting HW scan\n", __func__);

		del_timer_sync(&sc->offchannel.timer);
		ath_scan_complete(sc, true);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sujith Manoharan
112
99.12%
1
50.00%
Janusz Dziedzic
1
0.88%
1
50.00%
Total
113
100.00%
2
100.00%



static int ath9k_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 struct ieee80211_scan_request *hw_req)
{
	struct cfg80211_scan_request *req = &hw_req->req;
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	int ret = 0;

	mutex_lock(&sc->mutex);

	if (WARN_ON(sc->offchannel.scan_req)) {
		ret = -EBUSY;
		goto out;
	}

	ath9k_ps_wakeup(sc);
	set_bit(ATH_OP_SCANNING, &common->op_flags);
	sc->offchannel.scan_vif = vif;
	sc->offchannel.scan_req = req;
	sc->offchannel.scan_idx = 0;

	ath_dbg(common, CHAN_CTX, "HW scan request received on vif: %pM\n",
		vif->addr);

	if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE) {
		ath_dbg(common, CHAN_CTX, "Starting HW scan\n");
		ath_offchannel_next(sc);
	}

out:
	mutex_unlock(&sc->mutex);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
141
79.66%
2
50.00%
Sujith Manoharan
24
13.56%
1
25.00%
John W. Linville
12
6.78%
1
25.00%
Total
177
100.00%
4
100.00%



static void ath9k_cancel_hw_scan(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);

	ath_dbg(common, CHAN_CTX, "Cancel HW scan on vif: %pM\n", vif->addr);

	mutex_lock(&sc->mutex);
	del_timer_sync(&sc->offchannel.timer);
	ath_scan_complete(sc, true);
	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
58
69.88%
1
50.00%
Sujith Manoharan
25
30.12%
1
50.00%
Total
83
100.00%
2
100.00%



static int ath9k_remain_on_channel(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_channel *chan, int duration,
				   enum ieee80211_roc_type type)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	int ret = 0;

	mutex_lock(&sc->mutex);

	if (WARN_ON(sc->offchannel.roc_vif)) {
		ret = -EBUSY;
		goto out;
	}

	ath9k_ps_wakeup(sc);
	sc->offchannel.roc_vif = vif;
	sc->offchannel.roc_chan = chan;
	sc->offchannel.roc_duration = duration;

	ath_dbg(common, CHAN_CTX,
		"RoC request on vif: %pM, type: %d duration: %d\n",
		vif->addr, type, duration);

	if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE) {
		ath_dbg(common, CHAN_CTX, "Starting RoC period\n");
		ath_offchannel_next(sc);
	}

out:
	mutex_unlock(&sc->mutex);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
128
76.19%
1
50.00%
Sujith Manoharan
40
23.81%
1
50.00%
Total
168
100.00%
2
100.00%



static int ath9k_cancel_remain_on_channel(struct ieee80211_hw *hw)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);

	mutex_lock(&sc->mutex);

	ath_dbg(common, CHAN_CTX, "Cancel RoC\n");
	del_timer_sync(&sc->offchannel.timer);

	if (sc->offchannel.roc_vif) {
		if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START)
			ath_roc_complete(sc, ATH_ROC_COMPLETE_CANCEL);
	}

	mutex_unlock(&sc->mutex);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
75
77.32%
1
33.33%
Sujith Manoharan
21
21.65%
1
33.33%
Janusz Dziedzic
1
1.03%
1
33.33%
Total
97
100.00%
3
100.00%



static int ath9k_add_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *conf)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_chanctx *ctx, **ptr;
	int pos;

	mutex_lock(&sc->mutex);

	ath_for_each_chanctx(sc, ctx) {
		if (ctx->assigned)
			continue;

		ptr = (void *) conf->drv_priv;
		*ptr = ctx;
		ctx->assigned = true;
		pos = ctx - &sc->chanctx[0];
		ctx->hw_queue_base = pos * IEEE80211_NUM_ACS;

		ath_dbg(common, CHAN_CTX,
			"Add channel context: %d MHz\n",
			conf->def.chan->center_freq);

		ath_chanctx_set_channel(sc, ctx, &conf->def);

		mutex_unlock(&sc->mutex);
		return 0;
	}

	mutex_unlock(&sc->mutex);
	return -ENOSPC;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
92
55.76%
3
50.00%
Rajkumar Manoharan
44
26.67%
2
33.33%
Sujith Manoharan
29
17.58%
1
16.67%
Total
165
100.00%
6
100.00%



static void ath9k_remove_chanctx(struct ieee80211_hw *hw,
				 struct ieee80211_chanctx_conf *conf)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_chanctx *ctx = ath_chanctx_get(conf);

	mutex_lock(&sc->mutex);

	ath_dbg(common, CHAN_CTX,
		"Remove channel context: %d MHz\n",
		conf->def.chan->center_freq);

	ctx->assigned = false;
	ctx->hw_queue_base = 0;
	ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN);

	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
66
65.35%
2
40.00%
Sujith Manoharan
30
29.70%
2
40.00%
Rajkumar Manoharan
5
4.95%
1
20.00%
Total
101
100.00%
5
100.00%



static void ath9k_change_chanctx(struct ieee80211_hw *hw,
				 struct ieee80211_chanctx_conf *conf,
				 u32 changed)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_chanctx *ctx = ath_chanctx_get(conf);

	mutex_lock(&sc->mutex);
	ath_dbg(common, CHAN_CTX,
		"Change channel context: %d MHz\n",
		conf->def.chan->center_freq);
	ath_chanctx_set_channel(sc, ctx, &conf->def);
	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
66
69.47%
1
50.00%
Sujith Manoharan
29
30.53%
1
50.00%
Total
95
100.00%
2
100.00%



static int ath9k_assign_vif_chanctx(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_chanctx_conf *conf)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp = (void *)vif->drv_priv;
	struct ath_chanctx *ctx = ath_chanctx_get(conf);
	int i;

	ath9k_cancel_pending_offchannel(sc);

	mutex_lock(&sc->mutex);

	ath_dbg(common, CHAN_CTX,
		"Assign VIF (addr: %pM, type: %d, p2p: %d) to channel context: %d MHz\n",
		vif->addr, vif->type, vif->p2p,
		conf->def.chan->center_freq);

	avp->chanctx = ctx;
	ctx->nvifs_assigned++;
	list_add_tail(&avp->list, &ctx->vifs);
	ath9k_calculate_summary_state(sc, ctx);
	for (i = 0; i < IEEE80211_NUM_ACS; i++)
		vif->hw_queue[i] = ctx->hw_queue_base + i;

	mutex_unlock(&sc->mutex);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
97
54.49%
1
16.67%
Sujith Manoharan
51
28.65%
3
50.00%
Rajkumar Manoharan
30
16.85%
2
33.33%
Total
178
100.00%
6
100.00%



static void ath9k_unassign_vif_chanctx(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       struct ieee80211_chanctx_conf *conf)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp = (void *)vif->drv_priv;
	struct ath_chanctx *ctx = ath_chanctx_get(conf);
	int ac;

	ath9k_cancel_pending_offchannel(sc);

	mutex_lock(&sc->mutex);

	ath_dbg(common, CHAN_CTX,
		"Remove VIF (addr: %pM, type: %d, p2p: %d) from channel context: %d MHz\n",
		vif->addr, vif->type, vif->p2p,
		conf->def.chan->center_freq);

	avp->chanctx = NULL;
	ctx->nvifs_assigned--;
	list_del(&avp->list);
	ath9k_calculate_summary_state(sc, ctx);
	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
		vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;

	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
89
53.61%
1
16.67%
Sujith Manoharan
51
30.72%
3
50.00%
Rajkumar Manoharan
26
15.66%
2
33.33%
Total
166
100.00%
6
100.00%



static void ath9k_mgd_prepare_tx(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
{
	struct ath_softc *sc = hw->priv;
	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
	struct ath_vif *avp = (struct ath_vif *) vif->drv_priv;
	struct ath_beacon_config *cur_conf;
	struct ath_chanctx *go_ctx;
	unsigned long timeout;
	bool changed = false;
	u32 beacon_int;

	if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags))
		return;

	if (!avp->chanctx)
		return;

	mutex_lock(&sc->mutex);

	spin_lock_bh(&sc->chan_lock);
	if (sc->next_chan || (sc->cur_chan != avp->chanctx))
		changed = true;
	spin_unlock_bh(&sc->chan_lock);

	if (!changed)
		goto out;

	ath9k_cancel_pending_offchannel(sc);

	go_ctx = ath_is_go_chanctx_present(sc);

	if (go_ctx) {
		/*
                 * Wait till the GO interface gets a chance
                 * to send out an NoA.
                 */
		spin_lock_bh(&sc->chan_lock);
		sc->sched.mgd_prepare_tx = true;
		cur_conf = &go_ctx->beacon;
		beacon_int = TU_TO_USEC(cur_conf->beacon_interval);
		spin_unlock_bh(&sc->chan_lock);

		timeout = usecs_to_jiffies(beacon_int * 2);
		init_completion(&sc->go_beacon);

		mutex_unlock(&sc->mutex);

		if (wait_for_completion_timeout(&sc->go_beacon,
						timeout) == 0) {
			ath_dbg(common, CHAN_CTX,
				"Failed to send new NoA\n");

			spin_lock_bh(&sc->chan_lock);
			sc->sched.mgd_prepare_tx = false;
			spin_unlock_bh(&sc->chan_lock);
		}

		mutex_lock(&sc->mutex);
	}

	ath_dbg(common, CHAN_CTX,
		"%s: Set chanctx state to FORCE_ACTIVE for vif: %pM\n",
		__func__, vif->addr);

	spin_lock_bh(&sc->chan_lock);
	sc->next_chan = avp->chanctx;
	sc->sched.state = ATH_CHANCTX_STATE_FORCE_ACTIVE;
	spin_unlock_bh(&sc->chan_lock);

	ath_chanctx_set_next(sc, true);
out:
	mutex_unlock(&sc->mutex);
}

Contributors
Person
Tokens
Prop
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CommitProp
Sujith Manoharan
352
100.00%
6
100.00%
Total
352
100.00%
6
100.00%



void ath9k_fill_chanctx_ops(void)
{
	if (!ath9k_is_chanctx_enabled())
		return;

	ath9k_ops.hw_scan                  = ath9k_hw_scan;
	ath9k_ops.cancel_hw_scan           = ath9k_cancel_hw_scan;
	ath9k_ops.remain_on_channel        = ath9k_remain_on_channel;
	ath9k_ops.cancel_remain_on_channel = ath9k_cancel_remain_on_channel;
	ath9k_ops.add_chanctx              = ath9k_add_chanctx;
	ath9k_ops.remove_chanctx           = ath9k_remove_chanctx;
	ath9k_ops.change_chanctx           = ath9k_change_chanctx;
	ath9k_ops.assign_vif_chanctx       = ath9k_assign_vif_chanctx;
	ath9k_ops.unassign_vif_chanctx     = ath9k_unassign_vif_chanctx;
	ath9k_ops.mgd_prepare_tx           = ath9k_mgd_prepare_tx;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
71
95.95%
4
66.67%
Sujith Manoharan
3
4.05%
2
33.33%
Total
74
100.00%
6
100.00%

#endif



static int ath9k_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			     int *dbm)
{
	struct ath_softc *sc = hw->priv;
	struct ath_vif *avp = (void *)vif->drv_priv;

	mutex_lock(&sc->mutex);
	if (avp->chanctx)
		*dbm = avp->chanctx->cur_txpower;
	else
		*dbm = sc->cur_chan->cur_txpower;
	mutex_unlock(&sc->mutex);

	*dbm /= 2;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
91
100.00%
1
100.00%
Total
91
100.00%
1
100.00%


struct ieee80211_ops ath9k_ops = {
	.tx 		    = ath9k_tx,
	.start 		    = ath9k_start,
	.stop 		    = ath9k_stop,
	.add_interface 	    = ath9k_add_interface,
	.change_interface   = ath9k_change_interface,
	.remove_interface   = ath9k_remove_interface,
	.config 	    = ath9k_config,
	.configure_filter   = ath9k_configure_filter,
	.sta_state          = ath9k_sta_state,
	.sta_notify         = ath9k_sta_notify,
	.conf_tx 	    = ath9k_conf_tx,
	.bss_info_changed   = ath9k_bss_info_changed,
	.set_key            = ath9k_set_key,
	.get_tsf 	    = ath9k_get_tsf,
	.set_tsf 	    = ath9k_set_tsf,
	.reset_tsf 	    = ath9k_reset_tsf,
	.ampdu_action       = ath9k_ampdu_action,
	.get_survey	    = ath9k_get_survey,
	.rfkill_poll        = ath9k_rfkill_poll_state,
	.set_coverage_class = ath9k_set_coverage_class,
	.flush		    = ath9k_flush,
	.tx_frames_pending  = ath9k_tx_frames_pending,
	.tx_last_beacon     = ath9k_tx_last_beacon,
	.release_buffered_frames = ath9k_release_buffered_frames,
	.get_stats	    = ath9k_get_stats,
	.set_antenna	    = ath9k_set_antenna,
	.get_antenna	    = ath9k_get_antenna,

#ifdef CONFIG_ATH9K_WOW
	.suspend	    = ath9k_suspend,
	.resume		    = ath9k_resume,
	.set_wakeup	    = ath9k_set_wakeup,
#endif

#ifdef CONFIG_ATH9K_DEBUGFS
	.get_et_sset_count  = ath9k_get_et_sset_count,
	.get_et_stats       = ath9k_get_et_stats,
	.get_et_strings     = ath9k_get_et_strings,
#endif

#if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_STATION_STATISTICS)
	.sta_add_debugfs    = ath9k_sta_add_debugfs,
#endif
	.sw_scan_start	    = ath9k_sw_scan_start,
	.sw_scan_complete   = ath9k_sw_scan_complete,
	.get_txpower        = ath9k_get_txpower,
	.wake_tx_queue      = ath9k_wake_tx_queue,
};
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Felix Fietkau
3672
29.20%
95
27.14%
Sujith Manoharan
3452
27.45%
94
26.86%
Rajkumar Manoharan
2003
15.93%
27
7.71%
Vasanthakumar Thiagarajan
434
3.45%
5
1.43%
Luis R. Rodriguez
390
3.10%
23
6.57%
Lorenzo Bianconi
387
3.08%
3
0.86%
Ben Greear
326
2.59%
4
1.14%
Johannes Berg
311
2.47%
18
5.14%
Benjamin Berg
271
2.16%
4
1.14%
Jouni Malinen
268
2.13%
12
3.43%
Mohammed Shafi Shajakhan
247
1.96%
10
2.86%
Simon Wunderlich
155
1.23%
2
0.57%
Oleksij Rempel
79
0.63%
2
0.57%
Benoit Papillault
78
0.62%
2
0.57%
Toke Höiland-Jörgensen
55
0.44%
2
0.57%
Senthil Balasubramanian
48
0.38%
5
1.43%
Janusz Dziedzic
47
0.37%
4
1.14%
Vivek Natarajan
37
0.29%
3
0.86%
Sara Sharon
35
0.28%
1
0.29%
Joe Perches
33
0.26%
4
1.14%
Jan Kaisrlik
30
0.24%
1
0.29%
Giedrius Statkevičius
28
0.22%
1
0.29%
Alina Friedrichsen
28
0.22%
1
0.29%
John W. Linville
27
0.21%
4
1.14%
Eliad Peller
20
0.16%
2
0.57%
Stanislaw Gruszka
20
0.16%
2
0.57%
Chun-Yeow Yeoh
15
0.12%
3
0.86%
Thomas Huehn
13
0.10%
1
0.29%
Robert Shade
12
0.10%
1
0.29%
Gabor Juhos
10
0.08%
3
0.86%
Miaoqing Pan
10
0.08%
1
0.29%
Pavel Roskin
8
0.06%
1
0.29%
Masahiro Yamada
6
0.05%
1
0.29%
Emmanuel Grumbach
5
0.04%
1
0.29%
Javier Cardona
4
0.03%
1
0.29%
Wojciech Dubowik
3
0.02%
1
0.29%
Karl Beldan
3
0.02%
1
0.29%
Geert Uytterhoeven
2
0.02%
1
0.29%
Bruno Randolf
1
0.01%
1
0.29%
Sven Eckelmann
1
0.01%
1
0.29%
Pat Erley
1
0.01%
1
0.29%
Total
12575
100.00%
350
100.00%
Directory: drivers/net/wireless/ath/ath9k

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