1 /* 2 * Copyright (c) 2010-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include "htc.h" 18 19 #define FUDGE 2 20 21 void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv) 22 { 23 struct ath_hw *ah = priv->ah; 24 struct ath9k_tx_queue_info qi, qi_be; 25 26 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); 27 memset(&qi_be, 0, sizeof(struct ath9k_tx_queue_info)); 28 29 ath9k_hw_get_txq_props(ah, priv->beaconq, &qi); 30 31 if (priv->ah->opmode == NL80211_IFTYPE_AP || 32 priv->ah->opmode == NL80211_IFTYPE_MESH_POINT) { 33 qi.tqi_aifs = 1; 34 qi.tqi_cwmin = 0; 35 qi.tqi_cwmax = 0; 36 } else if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) { 37 int qnum = priv->hwq_map[IEEE80211_AC_BE]; 38 39 ath9k_hw_get_txq_props(ah, qnum, &qi_be); 40 41 qi.tqi_aifs = qi_be.tqi_aifs; 42 43 /* 44 * For WIFI Beacon Distribution 45 * Long slot time : 2x cwmin 46 * Short slot time : 4x cwmin 47 */ 48 if (ah->slottime == ATH9K_SLOT_TIME_20) 49 qi.tqi_cwmin = 2*qi_be.tqi_cwmin; 50 else 51 qi.tqi_cwmin = 4*qi_be.tqi_cwmin; 52 53 qi.tqi_cwmax = qi_be.tqi_cwmax; 54 55 } 56 57 if (!ath9k_hw_set_txq_props(ah, priv->beaconq, &qi)) { 58 ath_err(ath9k_hw_common(ah), 59 "Unable to update beacon queue %u!\n", priv->beaconq); 60 } else { 61 ath9k_hw_resettxqueue(ah, priv->beaconq); 62 } 63 } 64 65 66 static void ath9k_htc_beacon_config_sta(struct ath9k_htc_priv *priv, 67 struct htc_beacon_config *bss_conf) 68 { 69 struct ath_common *common = ath9k_hw_common(priv->ah); 70 struct ath9k_beacon_state bs; 71 enum ath9k_int imask = 0; 72 int dtimperiod, dtimcount, sleepduration; 73 int cfpperiod, cfpcount, bmiss_timeout; 74 u32 nexttbtt = 0, intval, tsftu; 75 __be32 htc_imask = 0; 76 u64 tsf; 77 int num_beacons, offset, dtim_dec_count, cfp_dec_count; 78 int ret __attribute__ ((unused)); 79 u8 cmd_rsp; 80 81 memset(&bs, 0, sizeof(bs)); 82 83 intval = bss_conf->beacon_interval; 84 bmiss_timeout = (ATH_DEFAULT_BMISS_LIMIT * bss_conf->beacon_interval); 85 86 /* 87 * Setup dtim and cfp parameters according to 88 * last beacon we received (which may be none). 89 */ 90 dtimperiod = bss_conf->dtim_period; 91 if (dtimperiod <= 0) /* NB: 0 if not known */ 92 dtimperiod = 1; 93 dtimcount = 1; 94 if (dtimcount >= dtimperiod) /* NB: sanity check */ 95 dtimcount = 0; 96 cfpperiod = 1; /* NB: no PCF support yet */ 97 cfpcount = 0; 98 99 sleepduration = intval; 100 if (sleepduration <= 0) 101 sleepduration = intval; 102 103 /* 104 * Pull nexttbtt forward to reflect the current 105 * TSF and calculate dtim+cfp state for the result. 106 */ 107 tsf = ath9k_hw_gettsf64(priv->ah); 108 tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE; 109 110 num_beacons = tsftu / intval + 1; 111 offset = tsftu % intval; 112 nexttbtt = tsftu - offset; 113 if (offset) 114 nexttbtt += intval; 115 116 /* DTIM Beacon every dtimperiod Beacon */ 117 dtim_dec_count = num_beacons % dtimperiod; 118 /* CFP every cfpperiod DTIM Beacon */ 119 cfp_dec_count = (num_beacons / dtimperiod) % cfpperiod; 120 if (dtim_dec_count) 121 cfp_dec_count++; 122 123 dtimcount -= dtim_dec_count; 124 if (dtimcount < 0) 125 dtimcount += dtimperiod; 126 127 cfpcount -= cfp_dec_count; 128 if (cfpcount < 0) 129 cfpcount += cfpperiod; 130 131 bs.bs_intval = intval; 132 bs.bs_nexttbtt = nexttbtt; 133 bs.bs_dtimperiod = dtimperiod*intval; 134 bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval; 135 bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod; 136 bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod; 137 bs.bs_cfpmaxduration = 0; 138 139 /* 140 * Calculate the number of consecutive beacons to miss* before taking 141 * a BMISS interrupt. The configuration is specified in TU so we only 142 * need calculate based on the beacon interval. Note that we clamp the 143 * result to at most 15 beacons. 144 */ 145 if (sleepduration > intval) { 146 bs.bs_bmissthreshold = ATH_DEFAULT_BMISS_LIMIT / 2; 147 } else { 148 bs.bs_bmissthreshold = DIV_ROUND_UP(bmiss_timeout, intval); 149 if (bs.bs_bmissthreshold > 15) 150 bs.bs_bmissthreshold = 15; 151 else if (bs.bs_bmissthreshold <= 0) 152 bs.bs_bmissthreshold = 1; 153 } 154 155 /* 156 * Calculate sleep duration. The configuration is given in ms. 157 * We ensure a multiple of the beacon period is used. Also, if the sleep 158 * duration is greater than the DTIM period then it makes senses 159 * to make it a multiple of that. 160 * 161 * XXX fixed at 100ms 162 */ 163 164 bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), sleepduration); 165 if (bs.bs_sleepduration > bs.bs_dtimperiod) 166 bs.bs_sleepduration = bs.bs_dtimperiod; 167 168 /* TSF out of range threshold fixed at 1 second */ 169 bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD; 170 171 ath_dbg(common, CONFIG, "intval: %u tsf: %llu tsftu: %u\n", 172 intval, tsf, tsftu); 173 ath_dbg(common, CONFIG, 174 "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n", 175 bs.bs_bmissthreshold, bs.bs_sleepduration, 176 bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext); 177 178 /* Set the computed STA beacon timers */ 179 180 WMI_CMD(WMI_DISABLE_INTR_CMDID); 181 ath9k_hw_set_sta_beacon_timers(priv->ah, &bs); 182 imask |= ATH9K_INT_BMISS; 183 htc_imask = cpu_to_be32(imask); 184 WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask); 185 } 186 187 static void ath9k_htc_beacon_config_ap(struct ath9k_htc_priv *priv, 188 struct htc_beacon_config *bss_conf) 189 { 190 struct ath_common *common = ath9k_hw_common(priv->ah); 191 enum ath9k_int imask = 0; 192 u32 nexttbtt, intval, tsftu; 193 __be32 htc_imask = 0; 194 int ret __attribute__ ((unused)); 195 u8 cmd_rsp; 196 u64 tsf; 197 198 intval = bss_conf->beacon_interval; 199 intval /= ATH9K_HTC_MAX_BCN_VIF; 200 nexttbtt = intval; 201 202 /* 203 * To reduce beacon misses under heavy TX load, 204 * set the beacon response time to a larger value. 205 */ 206 if (intval > DEFAULT_SWBA_RESPONSE) 207 priv->ah->config.sw_beacon_response_time = DEFAULT_SWBA_RESPONSE; 208 else 209 priv->ah->config.sw_beacon_response_time = MIN_SWBA_RESPONSE; 210 211 if (test_bit(OP_TSF_RESET, &priv->op_flags)) { 212 ath9k_hw_reset_tsf(priv->ah); 213 clear_bit(OP_TSF_RESET, &priv->op_flags); 214 } else { 215 /* 216 * Pull nexttbtt forward to reflect the current TSF. 217 */ 218 tsf = ath9k_hw_gettsf64(priv->ah); 219 tsftu = TSF_TO_TU(tsf >> 32, tsf) + FUDGE; 220 do { 221 nexttbtt += intval; 222 } while (nexttbtt < tsftu); 223 } 224 225 if (test_bit(OP_ENABLE_BEACON, &priv->op_flags)) 226 imask |= ATH9K_INT_SWBA; 227 228 ath_dbg(common, CONFIG, 229 "AP Beacon config, intval: %d, nexttbtt: %u, resp_time: %d imask: 0x%x\n", 230 bss_conf->beacon_interval, nexttbtt, 231 priv->ah->config.sw_beacon_response_time, imask); 232 233 ath9k_htc_beaconq_config(priv); 234 235 WMI_CMD(WMI_DISABLE_INTR_CMDID); 236 ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval)); 237 priv->cur_beacon_conf.bmiss_cnt = 0; 238 htc_imask = cpu_to_be32(imask); 239 WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask); 240 } 241 242 static void ath9k_htc_beacon_config_adhoc(struct ath9k_htc_priv *priv, 243 struct htc_beacon_config *bss_conf) 244 { 245 struct ath_common *common = ath9k_hw_common(priv->ah); 246 enum ath9k_int imask = 0; 247 u32 nexttbtt, intval, tsftu; 248 __be32 htc_imask = 0; 249 int ret __attribute__ ((unused)); 250 u8 cmd_rsp; 251 u64 tsf; 252 253 intval = bss_conf->beacon_interval; 254 nexttbtt = intval; 255 256 /* 257 * Pull nexttbtt forward to reflect the current TSF. 258 */ 259 tsf = ath9k_hw_gettsf64(priv->ah); 260 tsftu = TSF_TO_TU(tsf >> 32, tsf) + FUDGE; 261 do { 262 nexttbtt += intval; 263 } while (nexttbtt < tsftu); 264 265 /* 266 * Only one IBSS interfce is allowed. 267 */ 268 if (intval > DEFAULT_SWBA_RESPONSE) 269 priv->ah->config.sw_beacon_response_time = DEFAULT_SWBA_RESPONSE; 270 else 271 priv->ah->config.sw_beacon_response_time = MIN_SWBA_RESPONSE; 272 273 if (test_bit(OP_ENABLE_BEACON, &priv->op_flags)) 274 imask |= ATH9K_INT_SWBA; 275 276 ath_dbg(common, CONFIG, 277 "IBSS Beacon config, intval: %d, nexttbtt: %u, resp_time: %d, imask: 0x%x\n", 278 bss_conf->beacon_interval, nexttbtt, 279 priv->ah->config.sw_beacon_response_time, imask); 280 281 WMI_CMD(WMI_DISABLE_INTR_CMDID); 282 ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval)); 283 priv->cur_beacon_conf.bmiss_cnt = 0; 284 htc_imask = cpu_to_be32(imask); 285 WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask); 286 } 287 288 void ath9k_htc_beaconep(void *drv_priv, struct sk_buff *skb, 289 enum htc_endpoint_id ep_id, bool txok) 290 { 291 dev_kfree_skb_any(skb); 292 } 293 294 static void ath9k_htc_send_buffered(struct ath9k_htc_priv *priv, 295 int slot) 296 { 297 struct ath_common *common = ath9k_hw_common(priv->ah); 298 struct ieee80211_vif *vif; 299 struct sk_buff *skb; 300 struct ieee80211_hdr *hdr; 301 int padpos, padsize, ret, tx_slot; 302 303 spin_lock_bh(&priv->beacon_lock); 304 305 vif = priv->cur_beacon_conf.bslot[slot]; 306 307 skb = ieee80211_get_buffered_bc(priv->hw, vif); 308 309 while(skb) { 310 hdr = (struct ieee80211_hdr *) skb->data; 311 312 padpos = ieee80211_hdrlen(hdr->frame_control); 313 padsize = padpos & 3; 314 if (padsize && skb->len > padpos) { 315 if (skb_headroom(skb) < padsize) { 316 dev_kfree_skb_any(skb); 317 goto next; 318 } 319 skb_push(skb, padsize); 320 memmove(skb->data, skb->data + padsize, padpos); 321 } 322 323 tx_slot = ath9k_htc_tx_get_slot(priv); 324 if (tx_slot < 0) { 325 ath_dbg(common, XMIT, "No free CAB slot\n"); 326 dev_kfree_skb_any(skb); 327 goto next; 328 } 329 330 ret = ath9k_htc_tx_start(priv, NULL, skb, tx_slot, true); 331 if (ret != 0) { 332 ath9k_htc_tx_clear_slot(priv, tx_slot); 333 dev_kfree_skb_any(skb); 334 335 ath_dbg(common, XMIT, "Failed to send CAB frame\n"); 336 } else { 337 spin_lock_bh(&priv->tx.tx_lock); 338 priv->tx.queued_cnt++; 339 spin_unlock_bh(&priv->tx.tx_lock); 340 } 341 next: 342 skb = ieee80211_get_buffered_bc(priv->hw, vif); 343 } 344 345 spin_unlock_bh(&priv->beacon_lock); 346 } 347 348 static void ath9k_htc_send_beacon(struct ath9k_htc_priv *priv, 349 int slot) 350 { 351 struct ath_common *common = ath9k_hw_common(priv->ah); 352 struct ieee80211_vif *vif; 353 struct ath9k_htc_vif *avp; 354 struct tx_beacon_header beacon_hdr; 355 struct ath9k_htc_tx_ctl *tx_ctl; 356 struct ieee80211_tx_info *info; 357 struct ieee80211_mgmt *mgmt; 358 struct sk_buff *beacon; 359 u8 *tx_fhdr; 360 int ret; 361 362 memset(&beacon_hdr, 0, sizeof(struct tx_beacon_header)); 363 364 spin_lock_bh(&priv->beacon_lock); 365 366 vif = priv->cur_beacon_conf.bslot[slot]; 367 avp = (struct ath9k_htc_vif *)vif->drv_priv; 368 369 if (unlikely(test_bit(OP_SCANNING, &priv->op_flags))) { 370 spin_unlock_bh(&priv->beacon_lock); 371 return; 372 } 373 374 /* Get a new beacon */ 375 beacon = ieee80211_beacon_get(priv->hw, vif); 376 if (!beacon) { 377 spin_unlock_bh(&priv->beacon_lock); 378 return; 379 } 380 381 /* 382 * Update the TSF adjust value here, the HW will 383 * add this value for every beacon. 384 */ 385 mgmt = (struct ieee80211_mgmt *)beacon->data; 386 mgmt->u.beacon.timestamp = avp->tsfadjust; 387 388 info = IEEE80211_SKB_CB(beacon); 389 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 390 struct ieee80211_hdr *hdr = 391 (struct ieee80211_hdr *) beacon->data; 392 avp->seq_no += 0x10; 393 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 394 hdr->seq_ctrl |= cpu_to_le16(avp->seq_no); 395 } 396 397 tx_ctl = HTC_SKB_CB(beacon); 398 memset(tx_ctl, 0, sizeof(*tx_ctl)); 399 400 tx_ctl->type = ATH9K_HTC_BEACON; 401 tx_ctl->epid = priv->beacon_ep; 402 403 beacon_hdr.vif_index = avp->index; 404 tx_fhdr = skb_push(beacon, sizeof(beacon_hdr)); 405 memcpy(tx_fhdr, (u8 *) &beacon_hdr, sizeof(beacon_hdr)); 406 407 ret = htc_send(priv->htc, beacon); 408 if (ret != 0) { 409 if (ret == -ENOMEM) { 410 ath_dbg(common, BSTUCK, 411 "Failed to send beacon, no free TX buffer\n"); 412 } 413 dev_kfree_skb_any(beacon); 414 } 415 416 spin_unlock_bh(&priv->beacon_lock); 417 } 418 419 static int ath9k_htc_choose_bslot(struct ath9k_htc_priv *priv, 420 struct wmi_event_swba *swba) 421 { 422 struct ath_common *common = ath9k_hw_common(priv->ah); 423 u64 tsf; 424 u32 tsftu; 425 u16 intval; 426 int slot; 427 428 intval = priv->cur_beacon_conf.beacon_interval; 429 430 tsf = be64_to_cpu(swba->tsf); 431 tsftu = TSF_TO_TU(tsf >> 32, tsf); 432 slot = ((tsftu % intval) * ATH9K_HTC_MAX_BCN_VIF) / intval; 433 slot = ATH9K_HTC_MAX_BCN_VIF - slot - 1; 434 435 ath_dbg(common, BEACON, 436 "Choose slot: %d, tsf: %llu, tsftu: %u, intval: %u\n", 437 slot, tsf, tsftu, intval); 438 439 return slot; 440 } 441 442 void ath9k_htc_swba(struct ath9k_htc_priv *priv, 443 struct wmi_event_swba *swba) 444 { 445 struct ath_common *common = ath9k_hw_common(priv->ah); 446 int slot; 447 448 if (swba->beacon_pending != 0) { 449 priv->cur_beacon_conf.bmiss_cnt++; 450 if (priv->cur_beacon_conf.bmiss_cnt > BSTUCK_THRESHOLD) { 451 ath_dbg(common, BSTUCK, "Beacon stuck, HW reset\n"); 452 ieee80211_queue_work(priv->hw, 453 &priv->fatal_work); 454 } 455 return; 456 } 457 458 if (priv->cur_beacon_conf.bmiss_cnt) { 459 ath_dbg(common, BSTUCK, 460 "Resuming beacon xmit after %u misses\n", 461 priv->cur_beacon_conf.bmiss_cnt); 462 priv->cur_beacon_conf.bmiss_cnt = 0; 463 } 464 465 slot = ath9k_htc_choose_bslot(priv, swba); 466 spin_lock_bh(&priv->beacon_lock); 467 if (priv->cur_beacon_conf.bslot[slot] == NULL) { 468 spin_unlock_bh(&priv->beacon_lock); 469 return; 470 } 471 spin_unlock_bh(&priv->beacon_lock); 472 473 ath9k_htc_send_buffered(priv, slot); 474 ath9k_htc_send_beacon(priv, slot); 475 } 476 477 void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv, 478 struct ieee80211_vif *vif) 479 { 480 struct ath_common *common = ath9k_hw_common(priv->ah); 481 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv; 482 int i = 0; 483 484 spin_lock_bh(&priv->beacon_lock); 485 for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++) { 486 if (priv->cur_beacon_conf.bslot[i] == NULL) { 487 avp->bslot = i; 488 break; 489 } 490 } 491 492 priv->cur_beacon_conf.bslot[avp->bslot] = vif; 493 spin_unlock_bh(&priv->beacon_lock); 494 495 ath_dbg(common, CONFIG, "Added interface at beacon slot: %d\n", 496 avp->bslot); 497 } 498 499 void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv, 500 struct ieee80211_vif *vif) 501 { 502 struct ath_common *common = ath9k_hw_common(priv->ah); 503 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv; 504 505 spin_lock_bh(&priv->beacon_lock); 506 priv->cur_beacon_conf.bslot[avp->bslot] = NULL; 507 spin_unlock_bh(&priv->beacon_lock); 508 509 ath_dbg(common, CONFIG, "Removed interface at beacon slot: %d\n", 510 avp->bslot); 511 } 512 513 /* 514 * Calculate the TSF adjustment value for all slots 515 * other than zero. 516 */ 517 void ath9k_htc_set_tsfadjust(struct ath9k_htc_priv *priv, 518 struct ieee80211_vif *vif) 519 { 520 struct ath_common *common = ath9k_hw_common(priv->ah); 521 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv; 522 struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf; 523 u64 tsfadjust; 524 525 if (avp->bslot == 0) 526 return; 527 528 /* 529 * The beacon interval cannot be different for multi-AP mode, 530 * and we reach here only for VIF slots greater than zero, 531 * so beacon_interval is guaranteed to be set in cur_conf. 532 */ 533 tsfadjust = cur_conf->beacon_interval * avp->bslot / ATH9K_HTC_MAX_BCN_VIF; 534 avp->tsfadjust = cpu_to_le64(TU_TO_USEC(tsfadjust)); 535 536 ath_dbg(common, CONFIG, "tsfadjust is: %llu for bslot: %d\n", 537 (unsigned long long)tsfadjust, avp->bslot); 538 } 539 540 static void ath9k_htc_beacon_iter(void *data, u8 *mac, struct ieee80211_vif *vif) 541 { 542 bool *beacon_configured = (bool *)data; 543 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv; 544 545 if (vif->type == NL80211_IFTYPE_STATION && 546 avp->beacon_configured) 547 *beacon_configured = true; 548 } 549 550 static bool ath9k_htc_check_beacon_config(struct ath9k_htc_priv *priv, 551 struct ieee80211_vif *vif) 552 { 553 struct ath_common *common = ath9k_hw_common(priv->ah); 554 struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf; 555 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 556 bool beacon_configured; 557 558 /* 559 * Changing the beacon interval when multiple AP interfaces 560 * are configured will affect beacon transmission of all 561 * of them. 562 */ 563 if ((priv->ah->opmode == NL80211_IFTYPE_AP) && 564 (priv->num_ap_vif > 1) && 565 (vif->type == NL80211_IFTYPE_AP) && 566 (cur_conf->beacon_interval != bss_conf->beacon_int)) { 567 ath_dbg(common, CONFIG, 568 "Changing beacon interval of multiple AP interfaces !\n"); 569 return false; 570 } 571 572 /* 573 * If the HW is operating in AP mode, any new station interfaces that 574 * are added cannot change the beacon parameters. 575 */ 576 if (priv->num_ap_vif && 577 (vif->type != NL80211_IFTYPE_AP)) { 578 ath_dbg(common, CONFIG, 579 "HW in AP mode, cannot set STA beacon parameters\n"); 580 return false; 581 } 582 583 /* 584 * The beacon parameters are configured only for the first 585 * station interface. 586 */ 587 if ((priv->ah->opmode == NL80211_IFTYPE_STATION) && 588 (priv->num_sta_vif > 1) && 589 (vif->type == NL80211_IFTYPE_STATION)) { 590 beacon_configured = false; 591 ieee80211_iterate_active_interfaces_atomic( 592 priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 593 ath9k_htc_beacon_iter, &beacon_configured); 594 595 if (beacon_configured) { 596 ath_dbg(common, CONFIG, 597 "Beacon already configured for a station interface\n"); 598 return false; 599 } 600 } 601 602 return true; 603 } 604 605 void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv, 606 struct ieee80211_vif *vif) 607 { 608 struct ath_common *common = ath9k_hw_common(priv->ah); 609 struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf; 610 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 611 struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv; 612 613 if (!ath9k_htc_check_beacon_config(priv, vif)) 614 return; 615 616 cur_conf->beacon_interval = bss_conf->beacon_int; 617 if (cur_conf->beacon_interval == 0) 618 cur_conf->beacon_interval = 100; 619 620 cur_conf->dtim_period = bss_conf->dtim_period; 621 cur_conf->bmiss_timeout = 622 ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval; 623 624 switch (vif->type) { 625 case NL80211_IFTYPE_STATION: 626 ath9k_htc_beacon_config_sta(priv, cur_conf); 627 avp->beacon_configured = true; 628 break; 629 case NL80211_IFTYPE_ADHOC: 630 ath9k_htc_beacon_config_adhoc(priv, cur_conf); 631 break; 632 case NL80211_IFTYPE_MESH_POINT: 633 case NL80211_IFTYPE_AP: 634 ath9k_htc_beacon_config_ap(priv, cur_conf); 635 break; 636 default: 637 ath_dbg(common, CONFIG, "Unsupported beaconing mode\n"); 638 return; 639 } 640 } 641 642 void ath9k_htc_beacon_reconfig(struct ath9k_htc_priv *priv) 643 { 644 struct ath_common *common = ath9k_hw_common(priv->ah); 645 struct htc_beacon_config *cur_conf = &priv->cur_beacon_conf; 646 647 switch (priv->ah->opmode) { 648 case NL80211_IFTYPE_STATION: 649 ath9k_htc_beacon_config_sta(priv, cur_conf); 650 break; 651 case NL80211_IFTYPE_ADHOC: 652 ath9k_htc_beacon_config_adhoc(priv, cur_conf); 653 break; 654 case NL80211_IFTYPE_MESH_POINT: 655 case NL80211_IFTYPE_AP: 656 ath9k_htc_beacon_config_ap(priv, cur_conf); 657 break; 658 default: 659 ath_dbg(common, CONFIG, "Unsupported beaconing mode\n"); 660 return; 661 } 662 } 663