2008-08-04 15:16:41 +08:00
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/*
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2009-03-13 11:37:23 +08:00
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* Copyright (c) 2008-2009 Atheros Communications Inc.
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2008-08-04 15:16:41 +08:00
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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2009-02-09 15:56:54 +08:00
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#include "ath9k.h"
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2008-08-04 15:16:41 +08:00
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2009-03-03 12:46:54 +08:00
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#define FUDGE 2
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2008-08-04 15:16:41 +08:00
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/*
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* This function will modify certain transmit queue properties depending on
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* the operating mode of the station (AP or AdHoc). Parameters are AIFS
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* settings and channel width min/max
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*/
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2009-11-25 14:31:54 +08:00
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int ath_beaconq_config(struct ath_softc *sc)
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2008-08-04 15:16:41 +08:00
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{
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2009-02-09 15:57:12 +08:00
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struct ath_hw *ah = sc->sc_ah;
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2009-09-13 17:42:02 +08:00
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struct ath_common *common = ath9k_hw_common(ah);
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2009-11-25 14:31:54 +08:00
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struct ath9k_tx_queue_info qi, qi_be;
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int qnum;
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2008-08-04 15:16:41 +08:00
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2008-12-08 00:14:03 +08:00
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ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
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2009-02-09 15:57:26 +08:00
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if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
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2008-08-04 15:16:41 +08:00
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/* Always burst out beacon and CAB traffic. */
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qi.tqi_aifs = 1;
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qi.tqi_cwmin = 0;
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qi.tqi_cwmax = 0;
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} else {
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/* Adhoc mode; important thing is to use 2x cwmin. */
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2009-11-25 14:31:54 +08:00
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qnum = ath_tx_get_qnum(sc, ATH9K_TX_QUEUE_DATA,
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ATH9K_WME_AC_BE);
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ath9k_hw_get_txq_props(ah, qnum, &qi_be);
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qi.tqi_aifs = qi_be.tqi_aifs;
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qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
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qi.tqi_cwmax = qi_be.tqi_cwmax;
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2008-08-04 15:16:41 +08:00
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}
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2008-12-08 00:14:03 +08:00
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if (!ath9k_hw_set_txq_props(ah, sc->beacon.beaconq, &qi)) {
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2009-09-13 17:42:02 +08:00
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ath_print(common, ATH_DBG_FATAL,
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"Unable to update h/w beacon queue parameters\n");
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2008-08-04 15:16:41 +08:00
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return 0;
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} else {
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2009-03-03 12:46:51 +08:00
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ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
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2008-08-04 15:16:41 +08:00
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return 1;
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}
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}
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/*
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* Associates the beacon frame buffer with a transmit descriptor. Will set
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* up all required antenna switch parameters, rate codes, and channel flags.
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* Beacons are always sent out at the lowest rate, and are not retried.
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*/
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2009-03-03 12:46:51 +08:00
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static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
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2010-02-16 23:56:18 +08:00
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struct ath_buf *bf, int rateidx)
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2008-08-04 15:16:41 +08:00
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{
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2009-03-30 17:58:36 +08:00
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struct sk_buff *skb = bf->bf_mpdu;
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2009-02-09 15:57:12 +08:00
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struct ath_hw *ah = sc->sc_ah;
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2009-09-14 12:07:07 +08:00
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struct ath_common *common = ath9k_hw_common(ah);
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2008-08-04 15:16:41 +08:00
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struct ath_desc *ds;
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2008-09-17 12:45:09 +08:00
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struct ath9k_11n_rate_series series[4];
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2009-03-03 12:46:51 +08:00
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int flags, antenna, ctsrate = 0, ctsduration = 0;
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2009-11-24 05:21:01 +08:00
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struct ieee80211_supported_band *sband;
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u8 rate = 0;
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2008-08-04 15:16:41 +08:00
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ds = bf->bf_desc;
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flags = ATH9K_TXDESC_NOACK;
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2010-05-14 02:37:25 +08:00
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ds->ds_link = 0;
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/*
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* Switch antenna every beacon.
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* Should only switch every beacon period, not for every SWBA
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* XXX assumes two antennae
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*/
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antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
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2008-08-04 15:16:41 +08:00
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2009-11-24 05:21:01 +08:00
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sband = &sc->sbands[common->hw->conf.channel->band];
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2010-02-16 23:56:18 +08:00
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rate = sband->bitrates[rateidx].hw_value;
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2008-08-11 16:35:08 +08:00
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if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
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2010-02-16 23:56:18 +08:00
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rate |= sband->bitrates[rateidx].hw_value_short;
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2009-03-03 12:46:51 +08:00
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ath9k_hw_set11n_txdesc(ah, ds, skb->len + FCS_LEN,
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ATH9K_PKT_TYPE_BEACON,
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MAX_RATE_POWER,
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ATH9K_TXKEYIX_INVALID,
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ATH9K_KEY_TYPE_CLEAR,
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flags);
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2008-08-04 15:16:41 +08:00
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/* NB: beacon's BufLen must be a multiple of 4 bytes */
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2009-03-03 12:46:51 +08:00
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ath9k_hw_filltxdesc(ah, ds, roundup(skb->len, 4),
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2010-04-16 05:39:26 +08:00
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true, true, ds, bf->bf_buf_addr,
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sc->beacon.beaconq);
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2008-08-04 15:16:41 +08:00
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2008-10-04 06:45:25 +08:00
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memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
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2008-08-04 15:16:41 +08:00
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series[0].Tries = 1;
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series[0].Rate = rate;
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2009-09-14 12:07:07 +08:00
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series[0].ChSel = common->tx_chainmask;
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2008-08-04 15:16:41 +08:00
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series[0].RateFlags = (ctsrate) ? ATH9K_RATESERIES_RTS_CTS : 0;
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2009-03-03 12:46:51 +08:00
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ath9k_hw_set11n_ratescenario(ah, ds, ds, 0, ctsrate, ctsduration,
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series, 4, 0);
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2008-08-04 15:16:41 +08:00
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}
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2009-03-04 01:23:29 +08:00
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static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
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2009-03-04 01:23:26 +08:00
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struct ieee80211_vif *vif)
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2008-08-04 15:16:41 +08:00
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{
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2009-03-04 01:23:29 +08:00
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struct ath_wiphy *aphy = hw->priv;
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struct ath_softc *sc = aphy->sc;
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2009-09-13 17:42:02 +08:00
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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2008-08-04 15:16:41 +08:00
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struct ath_buf *bf;
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2009-02-09 15:57:03 +08:00
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struct ath_vif *avp;
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2008-08-04 15:16:41 +08:00
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struct sk_buff *skb;
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struct ath_txq *cabq;
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2008-08-11 19:01:50 +08:00
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struct ieee80211_tx_info *info;
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2008-09-17 12:45:09 +08:00
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int cabq_depth;
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2009-03-04 01:23:31 +08:00
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if (aphy->state != ATH_WIPHY_ACTIVE)
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return NULL;
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2008-10-29 12:46:06 +08:00
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avp = (void *)vif->drv_priv;
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2008-12-08 00:14:03 +08:00
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cabq = sc->beacon.cabq;
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2008-08-04 15:16:41 +08:00
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2009-03-30 17:58:25 +08:00
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if (avp->av_bcbuf == NULL)
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2008-08-04 15:16:41 +08:00
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return NULL;
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2008-09-17 12:45:09 +08:00
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2009-03-03 12:46:51 +08:00
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/* Release the old beacon first */
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2008-08-04 15:16:41 +08:00
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bf = avp->av_bcbuf;
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2009-03-30 17:58:36 +08:00
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skb = bf->bf_mpdu;
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2008-08-11 19:01:48 +08:00
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if (skb) {
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2009-01-15 03:17:03 +08:00
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dma_unmap_single(sc->dev, bf->bf_dmacontext,
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2009-03-03 12:46:51 +08:00
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skb->len, DMA_TO_DEVICE);
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2008-12-06 02:42:45 +08:00
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dev_kfree_skb_any(skb);
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2008-08-11 19:01:48 +08:00
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}
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2008-08-04 15:16:41 +08:00
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2009-03-03 12:46:51 +08:00
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/* Get a new beacon from mac80211 */
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2009-03-04 01:23:29 +08:00
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skb = ieee80211_beacon_get(hw, vif);
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2008-08-11 19:01:48 +08:00
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bf->bf_mpdu = skb;
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if (skb == NULL)
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return NULL;
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2009-03-13 03:53:23 +08:00
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((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp =
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avp->tsf_adjust;
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2008-09-17 12:45:09 +08:00
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2008-08-11 19:01:50 +08:00
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info = IEEE80211_SKB_CB(skb);
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if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
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/*
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* TODO: make sure the seq# gets assigned properly (vs. other
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* TX frames)
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*/
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2008-09-17 12:45:09 +08:00
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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2008-12-08 00:14:03 +08:00
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sc->tx.seq_no += 0x10;
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2008-08-11 19:01:50 +08:00
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hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
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2008-12-08 00:14:03 +08:00
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hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
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2008-08-11 19:01:50 +08:00
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}
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2008-09-17 12:45:09 +08:00
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2008-08-11 19:01:48 +08:00
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bf->bf_buf_addr = bf->bf_dmacontext =
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2009-01-15 03:17:03 +08:00
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dma_map_single(sc->dev, skb->data,
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2009-03-03 12:46:51 +08:00
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skb->len, DMA_TO_DEVICE);
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2009-01-15 03:17:03 +08:00
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if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
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2008-12-03 19:35:29 +08:00
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dev_kfree_skb_any(skb);
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bf->bf_mpdu = NULL;
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2009-09-13 17:42:02 +08:00
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ath_print(common, ATH_DBG_FATAL,
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"dma_mapping_error on beaconing\n");
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2008-12-03 19:35:29 +08:00
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return NULL;
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}
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2008-08-04 15:16:41 +08:00
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2009-03-04 01:23:29 +08:00
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skb = ieee80211_get_buffered_bc(hw, vif);
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2008-08-04 15:16:41 +08:00
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/*
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* if the CABQ traffic from previous DTIM is pending and the current
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* beacon is also a DTIM.
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2009-02-09 15:57:03 +08:00
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* 1) if there is only one vif let the cab traffic continue.
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* 2) if there are more than one vif and we are using staggered
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2008-08-04 15:16:41 +08:00
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* beacons, then drain the cabq by dropping all the frames in
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2009-02-09 15:57:03 +08:00
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* the cabq so that the current vifs cab traffic can be scheduled.
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2008-08-04 15:16:41 +08:00
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*/
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spin_lock_bh(&cabq->axq_lock);
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cabq_depth = cabq->axq_depth;
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spin_unlock_bh(&cabq->axq_lock);
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2008-08-22 22:31:33 +08:00
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if (skb && cabq_depth) {
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2009-02-09 15:57:03 +08:00
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if (sc->nvifs > 1) {
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2009-09-13 17:42:02 +08:00
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ath_print(common, ATH_DBG_BEACON,
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"Flushing previous cabq traffic\n");
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2009-03-03 12:46:51 +08:00
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ath_draintxq(sc, cabq, false);
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2008-08-04 15:16:41 +08:00
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}
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}
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2010-02-16 23:56:18 +08:00
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ath_beacon_setup(sc, avp, bf, info->control.rates[0].idx);
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2008-08-04 15:16:41 +08:00
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2008-08-22 22:31:33 +08:00
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while (skb) {
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2009-03-04 01:23:29 +08:00
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ath_tx_cabq(hw, skb);
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skb = ieee80211_get_buffered_bc(hw, vif);
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2008-08-22 22:31:33 +08:00
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}
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2008-08-04 15:16:41 +08:00
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return bf;
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}
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2009-03-04 01:23:29 +08:00
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int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
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2008-08-04 15:16:41 +08:00
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{
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2009-03-04 01:23:29 +08:00
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struct ath_softc *sc = aphy->sc;
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2009-09-13 17:42:02 +08:00
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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2009-02-09 15:57:03 +08:00
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struct ath_vif *avp;
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2008-08-04 15:16:41 +08:00
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struct ath_buf *bf;
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struct sk_buff *skb;
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2008-09-17 12:45:36 +08:00
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__le64 tstamp;
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2008-08-04 15:16:41 +08:00
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2008-10-29 12:46:06 +08:00
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avp = (void *)vif->drv_priv;
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2008-08-04 15:16:41 +08:00
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/* Allocate a beacon descriptor if we haven't done so. */
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if (!avp->av_bcbuf) {
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2008-09-17 12:45:09 +08:00
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/* Allocate beacon state for hostap/ibss. We know
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* a buffer is available. */
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2008-12-08 00:14:03 +08:00
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avp->av_bcbuf = list_first_entry(&sc->beacon.bbuf,
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2008-09-17 12:45:09 +08:00
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struct ath_buf, list);
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2008-08-04 15:16:41 +08:00
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list_del(&avp->av_bcbuf->list);
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2009-02-09 15:57:26 +08:00
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if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
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2010-05-14 02:37:25 +08:00
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sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC ||
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sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) {
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2008-08-04 15:16:41 +08:00
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int slot;
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/*
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2009-02-09 15:57:03 +08:00
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* Assign the vif to a beacon xmit slot. As
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2008-08-04 15:16:41 +08:00
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* above, this cannot fail to find one.
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*/
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avp->av_bslot = 0;
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for (slot = 0; slot < ATH_BCBUF; slot++)
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2009-03-04 01:23:26 +08:00
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if (sc->beacon.bslot[slot] == NULL) {
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2008-08-04 15:16:41 +08:00
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avp->av_bslot = slot;
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2010-05-14 02:37:24 +08:00
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2008-08-04 15:16:41 +08:00
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/* NB: keep looking for a double slot */
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2010-05-14 02:37:24 +08:00
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if (slot == 0 || !sc->beacon.bslot[slot-1])
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break;
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2008-08-04 15:16:41 +08:00
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}
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2009-03-04 01:23:26 +08:00
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BUG_ON(sc->beacon.bslot[avp->av_bslot] != NULL);
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sc->beacon.bslot[avp->av_bslot] = vif;
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2009-03-04 01:23:29 +08:00
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sc->beacon.bslot_aphy[avp->av_bslot] = aphy;
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2009-02-09 15:57:03 +08:00
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|
|
sc->nbcnvifs++;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-03-03 12:46:51 +08:00
|
|
|
/* release the previous beacon frame, if it already exists. */
|
2008-08-04 15:16:41 +08:00
|
|
|
bf = avp->av_bcbuf;
|
|
|
|
if (bf->bf_mpdu != NULL) {
|
2009-03-30 17:58:36 +08:00
|
|
|
skb = bf->bf_mpdu;
|
2009-01-15 03:17:03 +08:00
|
|
|
dma_unmap_single(sc->dev, bf->bf_dmacontext,
|
2009-03-03 12:46:51 +08:00
|
|
|
skb->len, DMA_TO_DEVICE);
|
2008-08-04 15:16:41 +08:00
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
bf->bf_mpdu = NULL;
|
|
|
|
}
|
|
|
|
|
2009-03-03 12:46:51 +08:00
|
|
|
/* NB: the beacon data buffer must be 32-bit aligned. */
|
2008-10-29 12:46:06 +08:00
|
|
|
skb = ieee80211_beacon_get(sc->hw, vif);
|
2008-08-04 15:16:41 +08:00
|
|
|
if (skb == NULL) {
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON, "cannot get skb\n");
|
2008-08-04 15:16:41 +08:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2008-09-17 12:45:36 +08:00
|
|
|
tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
|
2008-12-08 00:14:03 +08:00
|
|
|
sc->beacon.bc_tstamp = le64_to_cpu(tstamp);
|
2009-03-13 03:53:23 +08:00
|
|
|
/* Calculate a TSF adjustment factor required for staggered beacons. */
|
2008-08-04 15:16:41 +08:00
|
|
|
if (avp->av_bslot > 0) {
|
|
|
|
u64 tsfadjust;
|
|
|
|
int intval;
|
|
|
|
|
2009-04-23 22:10:04 +08:00
|
|
|
intval = sc->beacon_interval ? : ATH_DEFAULT_BINTVAL;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
/*
|
2009-03-13 03:53:23 +08:00
|
|
|
* Calculate the TSF offset for this beacon slot, i.e., the
|
|
|
|
* number of usecs that need to be added to the timestamp field
|
|
|
|
* in Beacon and Probe Response frames. Beacon slot 0 is
|
|
|
|
* processed at the correct offset, so it does not require TSF
|
|
|
|
* adjustment. Other slots are adjusted to get the timestamp
|
|
|
|
* close to the TBTT for the BSS.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-03-13 03:53:23 +08:00
|
|
|
tsfadjust = intval * avp->av_bslot / ATH_BCBUF;
|
|
|
|
avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust));
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"stagger beacons, bslot %d intval "
|
|
|
|
"%u tsfadjust %llu\n",
|
|
|
|
avp->av_bslot, intval, (unsigned long long)tsfadjust);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-13 03:53:23 +08:00
|
|
|
((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp =
|
|
|
|
avp->tsf_adjust;
|
|
|
|
} else
|
|
|
|
avp->tsf_adjust = cpu_to_le64(0);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2008-12-03 19:35:29 +08:00
|
|
|
bf->bf_mpdu = skb;
|
2008-08-11 19:01:48 +08:00
|
|
|
bf->bf_buf_addr = bf->bf_dmacontext =
|
2009-01-15 03:17:03 +08:00
|
|
|
dma_map_single(sc->dev, skb->data,
|
2009-03-03 12:46:51 +08:00
|
|
|
skb->len, DMA_TO_DEVICE);
|
2009-01-15 03:17:03 +08:00
|
|
|
if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
|
2008-12-03 19:35:29 +08:00
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
bf->bf_mpdu = NULL;
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_FATAL,
|
|
|
|
"dma_mapping_error on beacon alloc\n");
|
2008-12-03 19:35:29 +08:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-02-09 15:57:03 +08:00
|
|
|
void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
|
|
|
if (avp->av_bcbuf != NULL) {
|
|
|
|
struct ath_buf *bf;
|
|
|
|
|
|
|
|
if (avp->av_bslot != -1) {
|
2009-03-04 01:23:26 +08:00
|
|
|
sc->beacon.bslot[avp->av_bslot] = NULL;
|
2009-03-04 01:23:29 +08:00
|
|
|
sc->beacon.bslot_aphy[avp->av_bslot] = NULL;
|
2009-02-09 15:57:03 +08:00
|
|
|
sc->nbcnvifs--;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
bf = avp->av_bcbuf;
|
|
|
|
if (bf->bf_mpdu != NULL) {
|
2009-03-30 17:58:36 +08:00
|
|
|
struct sk_buff *skb = bf->bf_mpdu;
|
2009-01-15 03:17:03 +08:00
|
|
|
dma_unmap_single(sc->dev, bf->bf_dmacontext,
|
2009-03-03 12:46:51 +08:00
|
|
|
skb->len, DMA_TO_DEVICE);
|
2008-08-04 15:16:41 +08:00
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
bf->bf_mpdu = NULL;
|
|
|
|
}
|
2008-12-08 00:14:03 +08:00
|
|
|
list_add_tail(&bf->list, &sc->beacon.bbuf);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
avp->av_bcbuf = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-03-03 12:46:51 +08:00
|
|
|
void ath_beacon_tasklet(unsigned long data)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
|
|
|
struct ath_softc *sc = (struct ath_softc *)data;
|
2009-02-09 15:57:12 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
2008-08-04 15:16:41 +08:00
|
|
|
struct ath_buf *bf = NULL;
|
2009-03-04 01:23:26 +08:00
|
|
|
struct ieee80211_vif *vif;
|
2009-03-04 01:23:29 +08:00
|
|
|
struct ath_wiphy *aphy;
|
2009-03-04 01:23:26 +08:00
|
|
|
int slot;
|
2009-03-03 12:46:53 +08:00
|
|
|
u32 bfaddr, bc = 0, tsftu;
|
2008-08-04 15:16:41 +08:00
|
|
|
u64 tsf;
|
|
|
|
u16 intval;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check if the previous beacon has gone out. If
|
|
|
|
* not don't try to post another, skip this period
|
|
|
|
* and wait for the next. Missed beacons indicate
|
|
|
|
* a problem and should not occur. If we miss too
|
|
|
|
* many consecutive beacons reset the device.
|
|
|
|
*/
|
2008-12-08 00:14:03 +08:00
|
|
|
if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
|
|
|
|
sc->beacon.bmisscnt++;
|
2009-03-03 12:46:53 +08:00
|
|
|
|
2008-12-08 00:14:03 +08:00
|
|
|
if (sc->beacon.bmisscnt < BSTUCK_THRESH) {
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"missed %u consecutive beacons\n",
|
|
|
|
sc->beacon.bmisscnt);
|
2008-12-08 00:14:03 +08:00
|
|
|
} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"beacon is officially stuck\n");
|
2009-05-27 20:48:27 +08:00
|
|
|
sc->sc_flags |= SC_OP_TSF_RESET;
|
2009-03-03 12:46:53 +08:00
|
|
|
ath_reset(sc, false);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
2009-03-03 12:46:53 +08:00
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
return;
|
|
|
|
}
|
2008-09-17 12:45:09 +08:00
|
|
|
|
2008-12-08 00:14:03 +08:00
|
|
|
if (sc->beacon.bmisscnt != 0) {
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"resume beacon xmit after %u misses\n",
|
|
|
|
sc->beacon.bmisscnt);
|
2008-12-08 00:14:03 +08:00
|
|
|
sc->beacon.bmisscnt = 0;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Generate beacon frames. we are sending frames
|
|
|
|
* staggered so calculate the slot for this frame based
|
|
|
|
* on the tsf to safeguard against missing an swba.
|
|
|
|
*/
|
|
|
|
|
2009-04-23 22:10:04 +08:00
|
|
|
intval = sc->beacon_interval ? : ATH_DEFAULT_BINTVAL;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
|
|
|
tsf = ath9k_hw_gettsf64(ah);
|
|
|
|
tsftu = TSF_TO_TU(tsf>>32, tsf);
|
|
|
|
slot = ((tsftu % intval) * ATH_BCBUF) / intval;
|
2009-03-13 03:53:23 +08:00
|
|
|
/*
|
|
|
|
* Reverse the slot order to get slot 0 on the TBTT offset that does
|
|
|
|
* not require TSF adjustment and other slots adding
|
|
|
|
* slot/ATH_BCBUF * beacon_int to timestamp. For example, with
|
|
|
|
* ATH_BCBUF = 4, we process beacon slots as follows: 3 2 1 0 3 2 1 ..
|
|
|
|
* and slot 0 is at correct offset to TBTT.
|
|
|
|
*/
|
|
|
|
slot = ATH_BCBUF - slot - 1;
|
|
|
|
vif = sc->beacon.bslot[slot];
|
|
|
|
aphy = sc->beacon.bslot_aphy[slot];
|
2008-09-17 12:45:09 +08:00
|
|
|
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
|
|
|
|
slot, tsf, tsftu, intval, vif);
|
2008-09-17 12:45:09 +08:00
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
bfaddr = 0;
|
2009-03-04 01:23:26 +08:00
|
|
|
if (vif) {
|
2009-03-04 01:23:29 +08:00
|
|
|
bf = ath_beacon_generate(aphy->hw, vif);
|
2008-08-04 15:16:41 +08:00
|
|
|
if (bf != NULL) {
|
|
|
|
bfaddr = bf->bf_daddr;
|
|
|
|
bc = 1;
|
|
|
|
}
|
|
|
|
}
|
2009-03-03 12:46:53 +08:00
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
|
|
|
* Handle slot time change when a non-ERP station joins/leaves
|
|
|
|
* an 11g network. The 802.11 layer notifies us via callback,
|
|
|
|
* we mark updateslot, then wait one beacon before effecting
|
|
|
|
* the change. This gives associated stations at least one
|
|
|
|
* beacon interval to note the state change.
|
|
|
|
*
|
|
|
|
* NB: The slot time change state machine is clocked according
|
|
|
|
* to whether we are bursting or staggering beacons. We
|
|
|
|
* recognize the request to update and record the current
|
|
|
|
* slot then don't transition until that slot is reached
|
|
|
|
* again. If we miss a beacon for that slot then we'll be
|
|
|
|
* slow to transition but we'll be sure at least one beacon
|
|
|
|
* interval has passed. When bursting slot is always left
|
|
|
|
* set to ATH_BCBUF so this check is a noop.
|
|
|
|
*/
|
2008-12-08 00:14:03 +08:00
|
|
|
if (sc->beacon.updateslot == UPDATE) {
|
|
|
|
sc->beacon.updateslot = COMMIT; /* commit next beacon */
|
|
|
|
sc->beacon.slotupdate = slot;
|
|
|
|
} else if (sc->beacon.updateslot == COMMIT && sc->beacon.slotupdate == slot) {
|
2010-01-15 09:33:40 +08:00
|
|
|
ah->slottime = sc->beacon.slottime;
|
|
|
|
ath9k_hw_init_global_settings(ah);
|
2008-12-08 00:14:03 +08:00
|
|
|
sc->beacon.updateslot = OK;
|
2008-11-24 14:37:55 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
if (bfaddr != 0) {
|
|
|
|
/*
|
|
|
|
* Stop any current dma and put the new frame(s) on the queue.
|
|
|
|
* This should never fail since we check above that no frames
|
|
|
|
* are still pending on the queue.
|
|
|
|
*/
|
2008-12-08 00:14:03 +08:00
|
|
|
if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_FATAL,
|
2008-12-08 00:14:03 +08:00
|
|
|
"beacon queue %u did not stop?\n", sc->beacon.beaconq);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* NB: cabq traffic should already be queued and primed */
|
2008-12-08 00:14:03 +08:00
|
|
|
ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
|
|
|
|
ath9k_hw_txstart(ah, sc->beacon.beaconq);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-02-09 15:57:03 +08:00
|
|
|
sc->beacon.ast_be_xmit += bc; /* XXX per-vif? */
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-09-10 11:05:39 +08:00
|
|
|
static void ath9k_beacon_init(struct ath_softc *sc,
|
|
|
|
u32 next_beacon,
|
|
|
|
u32 beacon_period)
|
|
|
|
{
|
|
|
|
if (beacon_period & ATH9K_BEACON_RESET_TSF)
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
|
|
|
|
|
|
ath9k_hw_beaconinit(sc->sc_ah, next_beacon, beacon_period);
|
|
|
|
|
|
|
|
if (beacon_period & ATH9K_BEACON_RESET_TSF)
|
|
|
|
ath9k_ps_restore(sc);
|
|
|
|
}
|
|
|
|
|
2008-08-04 15:16:41 +08:00
|
|
|
/*
|
2009-03-03 12:46:54 +08:00
|
|
|
* For multi-bss ap support beacons are either staggered evenly over N slots or
|
|
|
|
* burst together. For the former arrange for the SWBA to be delivered for each
|
|
|
|
* slot. Slots that are not occupied will generate nothing.
|
2008-08-04 15:16:41 +08:00
|
|
|
*/
|
2009-03-03 12:46:54 +08:00
|
|
|
static void ath_beacon_config_ap(struct ath_softc *sc,
|
2009-05-15 21:29:21 +08:00
|
|
|
struct ath_beacon_config *conf)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2010-04-01 06:05:31 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
2008-09-17 12:45:09 +08:00
|
|
|
u32 nexttbtt, intval;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/* NB: the beacon interval is kept internally in TU's */
|
|
|
|
intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
|
|
|
|
intval /= ATH_BCBUF; /* for staggered beacons */
|
|
|
|
nexttbtt = intval;
|
2010-02-20 01:21:42 +08:00
|
|
|
|
|
|
|
if (sc->sc_flags & SC_OP_TSF_RESET)
|
|
|
|
intval |= ATH9K_BEACON_RESET_TSF;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/*
|
|
|
|
* In AP mode we enable the beacon timers and SWBA interrupts to
|
|
|
|
* prepare beacon frames.
|
|
|
|
*/
|
|
|
|
intval |= ATH9K_BEACON_ENA;
|
2010-04-01 06:05:31 +08:00
|
|
|
ah->imask |= ATH9K_INT_SWBA;
|
2009-03-03 12:46:54 +08:00
|
|
|
ath_beaconq_config(sc);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/* Set the computed AP beacon timers */
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2010-04-01 06:05:31 +08:00
|
|
|
ath9k_hw_set_interrupts(ah, 0);
|
2009-09-10 11:05:39 +08:00
|
|
|
ath9k_beacon_init(sc, nexttbtt, intval);
|
2009-03-03 12:46:54 +08:00
|
|
|
sc->beacon.bmisscnt = 0;
|
2010-04-01 06:05:31 +08:00
|
|
|
ath9k_hw_set_interrupts(ah, ah->imask);
|
2009-03-03 12:46:56 +08:00
|
|
|
|
|
|
|
/* Clear the reset TSF flag, so that subsequent beacon updation
|
|
|
|
will not reset the HW TSF. */
|
|
|
|
|
|
|
|
sc->sc_flags &= ~SC_OP_TSF_RESET;
|
2009-03-03 12:46:54 +08:00
|
|
|
}
|
2008-09-17 12:45:36 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/*
|
|
|
|
* This sets up the beacon timers according to the timestamp of the last
|
|
|
|
* received beacon and the current TSF, configures PCF and DTIM
|
|
|
|
* handling, programs the sleep registers so the hardware will wakeup in
|
|
|
|
* time to receive beacons, and configures the beacon miss handling so
|
|
|
|
* we'll receive a BMISS interrupt when we stop seeing beacons from the AP
|
|
|
|
* we've associated with.
|
|
|
|
*/
|
|
|
|
static void ath_beacon_config_sta(struct ath_softc *sc,
|
2009-05-15 21:29:21 +08:00
|
|
|
struct ath_beacon_config *conf)
|
2009-03-03 12:46:54 +08:00
|
|
|
{
|
2010-04-01 06:05:31 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
2009-03-03 12:46:54 +08:00
|
|
|
struct ath9k_beacon_state bs;
|
|
|
|
int dtimperiod, dtimcount, sleepduration;
|
|
|
|
int cfpperiod, cfpcount;
|
|
|
|
u32 nexttbtt = 0, intval, tsftu;
|
|
|
|
u64 tsf;
|
2009-05-21 02:56:39 +08:00
|
|
|
int num_beacons, offset, dtim_dec_count, cfp_dec_count;
|
2009-03-03 12:46:54 +08:00
|
|
|
|
2010-02-04 01:20:18 +08:00
|
|
|
/* No need to configure beacon if we are not associated */
|
|
|
|
if (!common->curaid) {
|
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"STA is not yet associated..skipping beacon config\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
memset(&bs, 0, sizeof(bs));
|
|
|
|
intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Setup dtim and cfp parameters according to
|
|
|
|
* last beacon we received (which may be none).
|
|
|
|
*/
|
|
|
|
dtimperiod = conf->dtim_period;
|
|
|
|
if (dtimperiod <= 0) /* NB: 0 if not known */
|
|
|
|
dtimperiod = 1;
|
|
|
|
dtimcount = conf->dtim_count;
|
|
|
|
if (dtimcount >= dtimperiod) /* NB: sanity check */
|
|
|
|
dtimcount = 0;
|
|
|
|
cfpperiod = 1; /* NB: no PCF support yet */
|
|
|
|
cfpcount = 0;
|
|
|
|
|
|
|
|
sleepduration = conf->listen_interval * intval;
|
|
|
|
if (sleepduration <= 0)
|
|
|
|
sleepduration = intval;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Pull nexttbtt forward to reflect the current
|
|
|
|
* TSF and calculate dtim+cfp state for the result.
|
|
|
|
*/
|
2010-04-01 06:05:31 +08:00
|
|
|
tsf = ath9k_hw_gettsf64(ah);
|
2009-03-03 12:46:54 +08:00
|
|
|
tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;
|
2009-05-21 02:56:39 +08:00
|
|
|
|
|
|
|
num_beacons = tsftu / intval + 1;
|
|
|
|
offset = tsftu % intval;
|
|
|
|
nexttbtt = tsftu - offset;
|
|
|
|
if (offset)
|
2009-03-03 12:46:54 +08:00
|
|
|
nexttbtt += intval;
|
2009-05-21 02:56:39 +08:00
|
|
|
|
|
|
|
/* 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;
|
2009-03-03 12:46:54 +08:00
|
|
|
|
|
|
|
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 = conf->listen_interval *
|
|
|
|
ATH_DEFAULT_BMISS_LIMIT / 2;
|
2008-08-04 15:16:41 +08:00
|
|
|
} else {
|
2009-03-03 12:46:54 +08:00
|
|
|
bs.bs_bmissthreshold = DIV_ROUND_UP(conf->bmiss_timeout, intval);
|
|
|
|
if (bs.bs_bmissthreshold > 15)
|
|
|
|
bs.bs_bmissthreshold = 15;
|
|
|
|
else if (bs.bs_bmissthreshold <= 0)
|
|
|
|
bs.bs_bmissthreshold = 1;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/*
|
|
|
|
* 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
|
|
|
|
*/
|
2008-09-17 12:45:09 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), sleepduration);
|
|
|
|
if (bs.bs_sleepduration > bs.bs_dtimperiod)
|
|
|
|
bs.bs_sleepduration = bs.bs_dtimperiod;
|
2008-09-17 12:45:09 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/* TSF out of range threshold fixed at 1 second */
|
|
|
|
bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
|
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"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);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/* Set the computed STA beacon timers */
|
2008-09-17 12:45:09 +08:00
|
|
|
|
2010-04-01 06:05:31 +08:00
|
|
|
ath9k_hw_set_interrupts(ah, 0);
|
|
|
|
ath9k_hw_set_sta_beacon_timers(ah, &bs);
|
|
|
|
ah->imask |= ATH9K_INT_BMISS;
|
|
|
|
ath9k_hw_set_interrupts(ah, ah->imask);
|
2009-03-03 12:46:54 +08:00
|
|
|
}
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
static void ath_beacon_config_adhoc(struct ath_softc *sc,
|
|
|
|
struct ath_beacon_config *conf,
|
2009-03-04 01:23:26 +08:00
|
|
|
struct ieee80211_vif *vif)
|
2009-03-03 12:46:54 +08:00
|
|
|
{
|
2010-04-01 06:05:31 +08:00
|
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
2009-03-03 12:46:54 +08:00
|
|
|
u64 tsf;
|
|
|
|
u32 tsftu, intval, nexttbtt;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-05-29 00:25:28 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/* Pull nexttbtt forward to reflect the current TSF */
|
2009-02-12 12:36:47 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
nexttbtt = TSF_TO_TU(sc->beacon.bc_tstamp >> 32, sc->beacon.bc_tstamp);
|
|
|
|
if (nexttbtt == 0)
|
|
|
|
nexttbtt = intval;
|
|
|
|
else if (intval)
|
|
|
|
nexttbtt = roundup(nexttbtt, intval);
|
2009-03-03 12:46:51 +08:00
|
|
|
|
2010-04-01 06:05:31 +08:00
|
|
|
tsf = ath9k_hw_gettsf64(ah);
|
2009-03-03 12:46:54 +08:00
|
|
|
tsftu = TSF_TO_TU((u32)(tsf>>32), (u32)tsf) + FUDGE;
|
|
|
|
do {
|
|
|
|
nexttbtt += intval;
|
|
|
|
} while (nexttbtt < tsftu);
|
2008-08-04 15:16:41 +08:00
|
|
|
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_BEACON,
|
|
|
|
"IBSS nexttbtt %u intval %u (%u)\n",
|
|
|
|
nexttbtt, intval, conf->beacon_interval);
|
2009-03-03 12:46:51 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
/*
|
|
|
|
* In IBSS mode enable the beacon timers but only enable SWBA interrupts
|
|
|
|
* if we need to manually prepare beacon frames. Otherwise we use a
|
|
|
|
* self-linked tx descriptor and let the hardware deal with things.
|
|
|
|
*/
|
|
|
|
intval |= ATH9K_BEACON_ENA;
|
2010-05-14 02:37:25 +08:00
|
|
|
ah->imask |= ATH9K_INT_SWBA;
|
2009-03-03 12:46:51 +08:00
|
|
|
|
2009-03-03 12:46:54 +08:00
|
|
|
ath_beaconq_config(sc);
|
|
|
|
|
|
|
|
/* Set the computed ADHOC beacon timers */
|
|
|
|
|
2010-04-01 06:05:31 +08:00
|
|
|
ath9k_hw_set_interrupts(ah, 0);
|
2009-09-10 11:05:39 +08:00
|
|
|
ath9k_beacon_init(sc, nexttbtt, intval);
|
2009-03-03 12:46:54 +08:00
|
|
|
sc->beacon.bmisscnt = 0;
|
2010-04-01 06:05:31 +08:00
|
|
|
ath9k_hw_set_interrupts(ah, ah->imask);
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|
|
|
|
|
2009-03-04 01:23:26 +08:00
|
|
|
void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
|
2008-08-04 15:16:41 +08:00
|
|
|
{
|
2009-05-15 21:29:22 +08:00
|
|
|
struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
|
2009-09-13 17:42:02 +08:00
|
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
2009-05-15 21:29:22 +08:00
|
|
|
enum nl80211_iftype iftype;
|
2009-03-03 12:46:54 +08:00
|
|
|
|
|
|
|
/* Setup the beacon configuration parameters */
|
2009-03-04 01:23:26 +08:00
|
|
|
if (vif) {
|
2009-05-15 21:29:22 +08:00
|
|
|
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
|
|
|
|
|
|
|
|
iftype = vif->type;
|
2009-03-03 12:46:54 +08:00
|
|
|
|
2009-05-15 21:29:22 +08:00
|
|
|
cur_conf->beacon_interval = bss_conf->beacon_int;
|
|
|
|
cur_conf->dtim_period = bss_conf->dtim_period;
|
|
|
|
cur_conf->listen_interval = 1;
|
|
|
|
cur_conf->dtim_count = 1;
|
|
|
|
cur_conf->bmiss_timeout =
|
|
|
|
ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval;
|
|
|
|
} else {
|
|
|
|
iftype = sc->sc_ah->opmode;
|
2009-03-03 12:46:54 +08:00
|
|
|
}
|
2009-05-15 21:29:22 +08:00
|
|
|
|
2009-06-12 13:25:55 +08:00
|
|
|
/*
|
|
|
|
* It looks like mac80211 may end up using beacon interval of zero in
|
|
|
|
* some cases (at least for mesh point). Avoid getting into an
|
|
|
|
* infinite loop by using a bit safer value instead. To be safe,
|
|
|
|
* do sanity check on beacon interval for all operating modes.
|
|
|
|
*/
|
|
|
|
if (cur_conf->beacon_interval == 0)
|
|
|
|
cur_conf->beacon_interval = 100;
|
2009-05-15 21:29:22 +08:00
|
|
|
|
|
|
|
switch (iftype) {
|
|
|
|
case NL80211_IFTYPE_AP:
|
|
|
|
ath_beacon_config_ap(sc, cur_conf);
|
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_ADHOC:
|
|
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
|
|
ath_beacon_config_adhoc(sc, cur_conf, vif);
|
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_STATION:
|
|
|
|
ath_beacon_config_sta(sc, cur_conf);
|
|
|
|
break;
|
|
|
|
default:
|
2009-09-13 17:42:02 +08:00
|
|
|
ath_print(common, ATH_DBG_CONFIG,
|
|
|
|
"Unsupported beaconing mode\n");
|
2009-05-15 21:29:22 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
sc->sc_flags |= SC_OP_BEACONS;
|
2008-08-04 15:16:41 +08:00
|
|
|
}
|