| /* |
| * 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 & ATH9K_BEACON_PERIOD; |
| 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, ATH_DBG_CONFIG, "intval: %u tsf: %llu tsftu: %u\n", |
| intval, tsf, tsftu); |
| ath_dbg(common, ATH_DBG_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 & ATH9K_BEACON_PERIOD; |
| 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 (priv->op_flags & OP_TSF_RESET) { |
| ath9k_hw_reset_tsf(priv->ah); |
| priv->op_flags &= ~OP_TSF_RESET; |
| } 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 (priv->op_flags & OP_ENABLE_BEACON) |
| imask |= ATH9K_INT_SWBA; |
| |
| ath_dbg(common, ATH_DBG_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 & ATH9K_BEACON_PERIOD; |
| 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 (priv->op_flags & OP_ENABLE_BEACON) |
| imask |= ATH9K_INT_SWBA; |
| |
| ath_dbg(common, ATH_DBG_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, ATH_DBG_XMIT, "No free CAB slot\n"); |
| dev_kfree_skb_any(skb); |
| goto next; |
| } |
| |
| ret = ath9k_htc_tx_start(priv, skb, tx_slot, true); |
| if (ret != 0) { |
| ath9k_htc_tx_clear_slot(priv, tx_slot); |
| dev_kfree_skb_any(skb); |
| |
| ath_dbg(common, ATH_DBG_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(priv->op_flags & OP_SCANNING)) { |
| 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, ATH_DBG_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 & ATH9K_BEACON_PERIOD; |
| |
| 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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_CONFIG, |
| "Unsupported beaconing mode\n"); |
| return; |
| } |
| } |