htc_drv_beacon.c

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/*
 * Copyright (c) 2010-2011 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 "htc.h"

#define FUDGE 2

void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv)
{
    struct ath_hw *ah = priv->ah;
    struct ath9k_tx_queue_info qi, qi_be;

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

    ath9k_hw_get_txq_props(ah, priv->beaconq, &qi);

    if (priv->ah->opmode == NL80211_IFTYPE_AP) {
        qi.tqi_aifs = 1;
        qi.tqi_cwmin = 0;
        qi.tqi_cwmax = 0;
    } else if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
        int qnum = priv->hwq_map[WME_AC_BE];

        ath9k_hw_get_txq_props(ah, qnum, &qi_be);

        qi.tqi_aifs = qi_be.tqi_aifs;

        /*
         * For WIFI Beacon Distribution
         * Long slot time  : 2x cwmin
         * Short slot time : 4x cwmin
         */
        if (ah->slottime == ATH9K_SLOT_TIME_20)
            qi.tqi_cwmin = 2*qi_be.tqi_cwmin;
        else
            qi.tqi_cwmin = 4*qi_be.tqi_cwmin;

        qi.tqi_cwmax = qi_be.tqi_cwmax;

    }

    if (!ath9k_hw_set_txq_props(ah, priv->beaconq, &qi)) {
        ath_err(ath9k_hw_common(ah),
            "Unable to update beacon queue %u!\n", priv->beaconq);
    } else {
        ath9k_hw_resettxqueue(ah, priv->beaconq);
    }
}


static void ath9k_htc_beacon_config_sta(struct ath9k_htc_priv *priv,
                    struct htc_beacon_config *bss_conf)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct ath9k_beacon_state bs;
    enum ath9k_int imask = 0;
    int dtimperiod, dtimcount, sleepduration;
    int cfpperiod, cfpcount, bmiss_timeout;
    u32 nexttbtt = 0, intval, tsftu;
    __be32 htc_imask = 0;
    u64 tsf;
    int num_beacons, offset, dtim_dec_count, cfp_dec_count;
    int ret __attribute__ ((unused));
    u8 cmd_rsp;

    memset(&bs, 0, sizeof(bs));

    intval = bss_conf->beacon_interval;
    bmiss_timeout = (ATH_DEFAULT_BMISS_LIMIT * bss_conf->beacon_interval);

    /*
     * Setup dtim and cfp parameters according to
     * last beacon we received (which may be none).
     */
    dtimperiod = bss_conf->dtim_period;
    if (dtimperiod <= 0)        /* NB: 0 if not known */
        dtimperiod = 1;
    dtimcount = 1;
    if (dtimcount >= dtimperiod)    /* NB: sanity check */
        dtimcount = 0;
    cfpperiod = 1;          /* NB: no PCF support yet */
    cfpcount = 0;

    sleepduration = intval;
    if (sleepduration <= 0)
        sleepduration = intval;

    /*
     * Pull nexttbtt forward to reflect the current
     * TSF and calculate dtim+cfp state for the result.
     */
    tsf = ath9k_hw_gettsf64(priv->ah);
    tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;

    num_beacons = tsftu / intval + 1;
    offset = tsftu % intval;
    nexttbtt = tsftu - offset;
    if (offset)
        nexttbtt += intval;

    /* DTIM Beacon every dtimperiod Beacon */
    dtim_dec_count = num_beacons % dtimperiod;
    /* CFP every cfpperiod DTIM Beacon */
    cfp_dec_count = (num_beacons / dtimperiod) % cfpperiod;
    if (dtim_dec_count)
        cfp_dec_count++;

    dtimcount -= dtim_dec_count;
    if (dtimcount < 0)
        dtimcount += dtimperiod;

    cfpcount -= cfp_dec_count;
    if (cfpcount < 0)
        cfpcount += cfpperiod;

    bs.bs_intval = intval;
    bs.bs_nexttbtt = nexttbtt;
    bs.bs_dtimperiod = dtimperiod*intval;
    bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval;
    bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod;
    bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod;
    bs.bs_cfpmaxduration = 0;

    /*
     * Calculate the number of consecutive beacons to miss* before taking
     * a BMISS interrupt. The configuration is specified in TU so we only
     * need calculate based on the beacon interval.  Note that we clamp the
     * result to at most 15 beacons.
     */
    if (sleepduration > intval) {
        bs.bs_bmissthreshold = ATH_DEFAULT_BMISS_LIMIT / 2;
    } else {
        bs.bs_bmissthreshold = DIV_ROUND_UP(bmiss_timeout, intval);
        if (bs.bs_bmissthreshold > 15)
            bs.bs_bmissthreshold = 15;
        else if (bs.bs_bmissthreshold <= 0)
            bs.bs_bmissthreshold = 1;
    }

    /*
     * Calculate sleep duration. The configuration is given in ms.
     * We ensure a multiple of the beacon period is used. Also, if the sleep
     * duration is greater than the DTIM period then it makes senses
     * to make it a multiple of that.
     *
     * XXX fixed at 100ms
     */

    bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), sleepduration);
    if (bs.bs_sleepduration > bs.bs_dtimperiod)
        bs.bs_sleepduration = bs.bs_dtimperiod;

    /* TSF out of range threshold fixed at 1 second */
    bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;

    ath_dbg(common, CONFIG, "intval: %u tsf: %llu tsftu: %u\n",
        intval, tsf, tsftu);
    ath_dbg(common, CONFIG,
        "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
        bs.bs_bmissthreshold, bs.bs_sleepduration,
        bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);

    /* Set the computed STA beacon timers */

    WMI_CMD(WMI_DISABLE_INTR_CMDID);
    ath9k_hw_set_sta_beacon_timers(priv->ah, &bs);
    imask |= ATH9K_INT_BMISS;
    htc_imask = cpu_to_be32(imask);
    WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}

static void ath9k_htc_beacon_config_ap(struct ath9k_htc_priv *priv,
                       struct htc_beacon_config *bss_conf)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    enum ath9k_int imask = 0;
    u32 nexttbtt, intval, tsftu;
    __be32 htc_imask = 0;
    int ret __attribute__ ((unused));
    u8 cmd_rsp;
    u64 tsf;

    intval = bss_conf->beacon_interval;
    intval /= ATH9K_HTC_MAX_BCN_VIF;
    nexttbtt = intval;

    /*
     * To reduce beacon misses under heavy TX load,
     * set the beacon response time to a larger value.
     */
    if (intval > DEFAULT_SWBA_RESPONSE)
        priv->ah->config.sw_beacon_response_time = DEFAULT_SWBA_RESPONSE;
    else
        priv->ah->config.sw_beacon_response_time = MIN_SWBA_RESPONSE;

    if (test_bit(OP_TSF_RESET, &priv->op_flags)) {
        ath9k_hw_reset_tsf(priv->ah);
        clear_bit(OP_TSF_RESET, &priv->op_flags);
    } else {
        /*
         * Pull nexttbtt forward to reflect the current TSF.
         */
        tsf = ath9k_hw_gettsf64(priv->ah);
        tsftu = TSF_TO_TU(tsf >> 32, tsf) + FUDGE;
        do {
            nexttbtt += intval;
        } while (nexttbtt < tsftu);
    }

    if (test_bit(OP_ENABLE_BEACON, &priv->op_flags))
        imask |= ATH9K_INT_SWBA;

    ath_dbg(common, CONFIG,
        "AP Beacon config, intval: %d, nexttbtt: %u, resp_time: %d imask: 0x%x\n",
        bss_conf->beacon_interval, nexttbtt,
        priv->ah->config.sw_beacon_response_time, imask);

    ath9k_htc_beaconq_config(priv);

    WMI_CMD(WMI_DISABLE_INTR_CMDID);
    ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval));
    priv->cur_beacon_conf.bmiss_cnt = 0;
    htc_imask = cpu_to_be32(imask);
    WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}

static void ath9k_htc_beacon_config_adhoc(struct ath9k_htc_priv *priv,
                      struct htc_beacon_config *bss_conf)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    enum ath9k_int imask = 0;
    u32 nexttbtt, intval, tsftu;
    __be32 htc_imask = 0;
    int ret __attribute__ ((unused));
    u8 cmd_rsp;
    u64 tsf;

    intval = bss_conf->beacon_interval;
    nexttbtt = intval;

    /*
     * Pull nexttbtt forward to reflect the current TSF.
     */
    tsf = ath9k_hw_gettsf64(priv->ah);
    tsftu = TSF_TO_TU(tsf >> 32, tsf) + FUDGE;
    do {
        nexttbtt += intval;
    } while (nexttbtt < tsftu);

    /*
     * Only one IBSS interfce is allowed.
     */
    if (intval > DEFAULT_SWBA_RESPONSE)
        priv->ah->config.sw_beacon_response_time = DEFAULT_SWBA_RESPONSE;
    else
        priv->ah->config.sw_beacon_response_time = MIN_SWBA_RESPONSE;

    if (test_bit(OP_ENABLE_BEACON, &priv->op_flags))
        imask |= ATH9K_INT_SWBA;

    ath_dbg(common, CONFIG,
        "IBSS Beacon config, intval: %d, nexttbtt: %u, resp_time: %d, imask: 0x%x\n",
        bss_conf->beacon_interval, nexttbtt,
        priv->ah->config.sw_beacon_response_time, imask);

    WMI_CMD(WMI_DISABLE_INTR_CMDID);
    ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval));
    priv->cur_beacon_conf.bmiss_cnt = 0;
    htc_imask = cpu_to_be32(imask);
    WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}

void ath9k_htc_beaconep(void *drv_priv, struct sk_buff *skb,
            enum htc_endpoint_id ep_id, bool txok)
{
    dev_kfree_skb_any(skb);
}

static void ath9k_htc_send_buffered(struct ath9k_htc_priv *priv,
                    int slot)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct ieee80211_vif *vif;
    struct sk_buff *skb;
    struct ieee80211_hdr *hdr;
    int padpos, padsize, ret, tx_slot;

    spin_lock_bh(&priv->beacon_lock);

    vif = priv->cur_beacon_conf.bslot[slot];

    skb = ieee80211_get_buffered_bc(priv->hw, vif);

    while(skb) {
        hdr = (struct ieee80211_hdr *) skb->data;

        padpos = ath9k_cmn_padpos(hdr->frame_control);
        padsize = padpos & 3;
        if (padsize && skb->len > padpos) {
            if (skb_headroom(skb) < padsize) {
                dev_kfree_skb_any(skb);
                goto next;
            }
            skb_push(skb, padsize);
            memmove(skb->data, skb->data + padsize, padpos);
        }

        tx_slot = ath9k_htc_tx_get_slot(priv);
        if (tx_slot < 0) {
            ath_dbg(common, XMIT, "No free CAB slot\n");
            dev_kfree_skb_any(skb);
            goto next;
        }

        ret = ath9k_htc_tx_start(priv, NULL, skb, tx_slot, true);
        if (ret != 0) {
            ath9k_htc_tx_clear_slot(priv, tx_slot);
            dev_kfree_skb_any(skb);

            ath_dbg(common, XMIT, "Failed to send CAB frame\n");
        } else {
            spin_lock_bh(&priv->tx.tx_lock);
            priv->tx.queued_cnt++;
            spin_unlock_bh(&priv->tx.tx_lock);
        }
    next:
        skb = ieee80211_get_buffered_bc(priv->hw, vif);
    }

    spin_unlock_bh(&priv->beacon_lock);
}

static void ath9k_htc_send_beacon(struct ath9k_htc_priv *priv,
                  int slot)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct ieee80211_vif *vif;
    struct ath9k_htc_vif *avp;
    struct tx_beacon_header beacon_hdr;
    struct ath9k_htc_tx_ctl *tx_ctl;
    struct ieee80211_tx_info *info;
    struct ieee80211_mgmt *mgmt;
    struct sk_buff *beacon;
    u8 *tx_fhdr;
    int ret;

    memset(&beacon_hdr, 0, sizeof(struct tx_beacon_header));

    spin_lock_bh(&priv->beacon_lock);

    vif = priv->cur_beacon_conf.bslot[slot];
    avp = (struct ath9k_htc_vif *)vif->drv_priv;

    if (unlikely(test_bit(OP_SCANNING, &priv->op_flags))) {
        spin_unlock_bh(&priv->beacon_lock);
        return;
    }

    /* Get a new beacon */
    beacon = ieee80211_beacon_get(priv->hw, vif);
    if (!beacon) {
        spin_unlock_bh(&priv->beacon_lock);
        return;
    }

    /*
     * Update the TSF adjust value here, the HW will
     * add this value for every beacon.
     */
    mgmt = (struct ieee80211_mgmt *)beacon->data;
    mgmt->u.beacon.timestamp = avp->tsfadjust;

    info = IEEE80211_SKB_CB(beacon);
    if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
        struct ieee80211_hdr *hdr =
            (struct ieee80211_hdr *) beacon->data;
        avp->seq_no += 0x10;
        hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
        hdr->seq_ctrl |= cpu_to_le16(avp->seq_no);
    }

    tx_ctl = HTC_SKB_CB(beacon);
    memset(tx_ctl, 0, sizeof(*tx_ctl));

    tx_ctl->type = ATH9K_HTC_BEACON;
    tx_ctl->epid = priv->beacon_ep;

    beacon_hdr.vif_index = avp->index;
    tx_fhdr = skb_push(beacon, sizeof(beacon_hdr));
    memcpy(tx_fhdr, (u8 *) &beacon_hdr, sizeof(beacon_hdr));

    ret = htc_send(priv->htc, beacon);
    if (ret != 0) {
        if (ret == -ENOMEM) {
            ath_dbg(common, BSTUCK,
                "Failed to send beacon, no free TX buffer\n");
        }
        dev_kfree_skb_any(beacon);
    }

    spin_unlock_bh(&priv->beacon_lock);
}

static int ath9k_htc_choose_bslot(struct ath9k_htc_priv *priv,
                  struct wmi_event_swba *swba)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    u64 tsf;
    u32 tsftu;
    u16 intval;
    int slot;

    intval = priv->cur_beacon_conf.beacon_interval;

    tsf = be64_to_cpu(swba->tsf);
    tsftu = TSF_TO_TU(tsf >> 32, tsf);
    slot = ((tsftu % intval) * ATH9K_HTC_MAX_BCN_VIF) / intval;
    slot = ATH9K_HTC_MAX_BCN_VIF - slot - 1;

    ath_dbg(common, BEACON,
        "Choose slot: %d, tsf: %llu, tsftu: %u, intval: %u\n",
        slot, tsf, tsftu, intval);

    return slot;
}

void ath9k_htc_swba(struct ath9k_htc_priv *priv,
            struct wmi_event_swba *swba)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    int slot;

    if (swba->beacon_pending != 0) {
        priv->cur_beacon_conf.bmiss_cnt++;
        if (priv->cur_beacon_conf.bmiss_cnt > BSTUCK_THRESHOLD) {
            ath_dbg(common, BSTUCK, "Beacon stuck, HW reset\n");
            ieee80211_queue_work(priv->hw,
                         &priv->fatal_work);
        }
        return;
    }

    if (priv->cur_beacon_conf.bmiss_cnt) {
        ath_dbg(common, BSTUCK,
            "Resuming beacon xmit after %u misses\n",
            priv->cur_beacon_conf.bmiss_cnt);
        priv->cur_beacon_conf.bmiss_cnt = 0;
    }

    slot = ath9k_htc_choose_bslot(priv, swba);
    spin_lock_bh(&priv->beacon_lock);
    if (priv->cur_beacon_conf.bslot[slot] == NULL) {
        spin_unlock_bh(&priv->beacon_lock);
        return;
    }
    spin_unlock_bh(&priv->beacon_lock);

    ath9k_htc_send_buffered(priv, slot);
    ath9k_htc_send_beacon(priv, slot);
}

void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv,
                struct ieee80211_vif *vif)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
    int i = 0;

    spin_lock_bh(&priv->beacon_lock);
    for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++) {
        if (priv->cur_beacon_conf.bslot[i] == NULL) {
            avp->bslot = i;
            break;
        }
    }

    priv->cur_beacon_conf.bslot[avp->bslot] = vif;
    spin_unlock_bh(&priv->beacon_lock);

    ath_dbg(common, CONFIG, "Added interface at beacon slot: %d\n",
        avp->bslot);
}

void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv,
                struct ieee80211_vif *vif)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;

    spin_lock_bh(&priv->beacon_lock);
    priv->cur_beacon_conf.bslot[avp->bslot] = NULL;
    spin_unlock_bh(&priv->beacon_lock);

    ath_dbg(common, CONFIG, "Removed interface at beacon slot: %d\n",
        avp->bslot);
}

/*
 * Calculate the TSF adjustment value for all slots
 * other than zero.
 */
void ath9k_htc_set_tsfadjust(struct ath9k_htc_priv *priv,
                 struct ieee80211_vif *vif)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
    struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf;
    u64 tsfadjust;

    if (avp->bslot == 0)
        return;

    /*
     * The beacon interval cannot be different for multi-AP mode,
     * and we reach here only for VIF slots greater than zero,
     * so beacon_interval is guaranteed to be set in cur_conf.
     */
    tsfadjust = cur_conf->beacon_interval * avp->bslot / ATH9K_HTC_MAX_BCN_VIF;
    avp->tsfadjust = cpu_to_le64(TU_TO_USEC(tsfadjust));

    ath_dbg(common, CONFIG, "tsfadjust is: %llu for bslot: %d\n",
        (unsigned long long)tsfadjust, avp->bslot);
}

static void ath9k_htc_beacon_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
    bool *beacon_configured = (bool *)data;
    struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;

    if (vif->type == NL80211_IFTYPE_STATION &&
        avp->beacon_configured)
        *beacon_configured = true;
}

static bool ath9k_htc_check_beacon_config(struct ath9k_htc_priv *priv,
                      struct ieee80211_vif *vif)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf;
    struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
    bool beacon_configured;

    /*
     * Changing the beacon interval when multiple AP interfaces
     * are configured will affect beacon transmission of all
     * of them.
     */
    if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
        (priv->num_ap_vif > 1) &&
        (vif->type == NL80211_IFTYPE_AP) &&
        (cur_conf->beacon_interval != bss_conf->beacon_int)) {
        ath_dbg(common, CONFIG,
            "Changing beacon interval of multiple AP interfaces !\n");
        return false;
    }

    /*
     * If the HW is operating in AP mode, any new station interfaces that
     * are added cannot change the beacon parameters.
     */
    if (priv->num_ap_vif &&
        (vif->type != NL80211_IFTYPE_AP)) {
        ath_dbg(common, CONFIG,
            "HW in AP mode, cannot set STA beacon parameters\n");
        return false;
    }

    /*
     * The beacon parameters are configured only for the first
     * station interface.
     */
    if ((priv->ah->opmode == NL80211_IFTYPE_STATION) &&
        (priv->num_sta_vif > 1) &&
        (vif->type == NL80211_IFTYPE_STATION)) {
        beacon_configured = false;
        ieee80211_iterate_active_interfaces_atomic(priv->hw,
                               ath9k_htc_beacon_iter,
                               &beacon_configured);

        if (beacon_configured) {
            ath_dbg(common, CONFIG,
                "Beacon already configured for a station interface\n");
            return false;
        }
    }

    return true;
}

void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
                 struct ieee80211_vif *vif)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf;
    struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
    struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;

    if (!ath9k_htc_check_beacon_config(priv, vif))
        return;

    cur_conf->beacon_interval = bss_conf->beacon_int;
    if (cur_conf->beacon_interval == 0)
        cur_conf->beacon_interval = 100;

    cur_conf->dtim_period = bss_conf->dtim_period;
    cur_conf->bmiss_timeout =
        ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval;

    switch (vif->type) {
    case NL80211_IFTYPE_STATION:
        ath9k_htc_beacon_config_sta(priv, cur_conf);
        avp->beacon_configured = true;
        break;
    case NL80211_IFTYPE_ADHOC:
        ath9k_htc_beacon_config_adhoc(priv, cur_conf);
        break;
    case NL80211_IFTYPE_AP:
        ath9k_htc_beacon_config_ap(priv, cur_conf);
        break;
    default:
        ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");
        return;
    }
}

void ath9k_htc_beacon_reconfig(struct ath9k_htc_priv *priv)
{
    struct ath_common *common = ath9k_hw_common(priv->ah);
    struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf;

    switch (priv->ah->opmode) {
    case NL80211_IFTYPE_STATION:
        ath9k_htc_beacon_config_sta(priv, cur_conf);
        break;
    case NL80211_IFTYPE_ADHOC:
        ath9k_htc_beacon_config_adhoc(priv, cur_conf);
        break;
    case NL80211_IFTYPE_AP:
        ath9k_htc_beacon_config_ap(priv, cur_conf);
        break;
    default:
        ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");
        return;
    }
}