1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Mac80211 STA API for ST-Ericsson CW1200 drivers 4 * 5 * Copyright (c) 2010, ST-Ericsson 6 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> 7 */ 8 9#include <linux/vmalloc.h> 10#include <linux/sched.h> 11#include <linux/firmware.h> 12#include <linux/module.h> 13#include <linux/etherdevice.h> 14 15#include "cw1200.h" 16#include "sta.h" 17#include "fwio.h" 18#include "bh.h" 19#include "debug.h" 20 21#ifndef ERP_INFO_BYTE_OFFSET 22#define ERP_INFO_BYTE_OFFSET 2 23#endif 24 25static void cw1200_do_join(struct cw1200_common *priv); 26static void cw1200_do_unjoin(struct cw1200_common *priv); 27 28static int cw1200_upload_beacon(struct cw1200_common *priv); 29static int cw1200_upload_pspoll(struct cw1200_common *priv); 30static int cw1200_upload_null(struct cw1200_common *priv); 31static int cw1200_upload_qosnull(struct cw1200_common *priv); 32static int cw1200_start_ap(struct cw1200_common *priv); 33static int cw1200_update_beaconing(struct cw1200_common *priv); 34static int cw1200_enable_beaconing(struct cw1200_common *priv, 35 bool enable); 36static void __cw1200_sta_notify(struct ieee80211_hw *dev, 37 struct ieee80211_vif *vif, 38 enum sta_notify_cmd notify_cmd, 39 int link_id); 40static int __cw1200_flush(struct cw1200_common *priv, bool drop); 41 42static inline void __cw1200_free_event_queue(struct list_head *list) 43{ 44 struct cw1200_wsm_event *event, *tmp; 45 list_for_each_entry_safe(event, tmp, list, link) { 46 list_del(&event->link); 47 kfree(event); 48 } 49} 50 51/* ******************************************************************** */ 52/* STA API */ 53 54int cw1200_start(struct ieee80211_hw *dev) 55{ 56 struct cw1200_common *priv = dev->priv; 57 int ret = 0; 58 59 cw1200_pm_stay_awake(&priv->pm_state, HZ); 60 61 mutex_lock(&priv->conf_mutex); 62 63 /* default EDCA */ 64 WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false); 65 WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false); 66 WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false); 67 WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false); 68 ret = wsm_set_edca_params(priv, &priv->edca); 69 if (ret) 70 goto out; 71 72 ret = cw1200_set_uapsd_param(priv, &priv->edca); 73 if (ret) 74 goto out; 75 76 priv->setbssparams_done = false; 77 78 memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN); 79 priv->mode = NL80211_IFTYPE_MONITOR; 80 priv->wep_default_key_id = -1; 81 82 priv->cqm_beacon_loss_count = 10; 83 84 ret = cw1200_setup_mac(priv); 85 if (ret) 86 goto out; 87 88out: 89 mutex_unlock(&priv->conf_mutex); 90 return ret; 91} 92 93void cw1200_stop(struct ieee80211_hw *dev) 94{ 95 struct cw1200_common *priv = dev->priv; 96 LIST_HEAD(list); 97 int i; 98 99 wsm_lock_tx(priv); 100 101 while (down_trylock(&priv->scan.lock)) { 102 /* Scan is in progress. Force it to stop. */ 103 priv->scan.req = NULL; 104 schedule(); 105 } 106 up(&priv->scan.lock); 107 108 cancel_delayed_work_sync(&priv->scan.probe_work); 109 cancel_delayed_work_sync(&priv->scan.timeout); 110 cancel_delayed_work_sync(&priv->clear_recent_scan_work); 111 cancel_delayed_work_sync(&priv->join_timeout); 112 cw1200_cqm_bssloss_sm(priv, 0, 0, 0); 113 cancel_work_sync(&priv->unjoin_work); 114 cancel_delayed_work_sync(&priv->link_id_gc_work); 115 flush_workqueue(priv->workqueue); 116 del_timer_sync(&priv->mcast_timeout); 117 mutex_lock(&priv->conf_mutex); 118 priv->mode = NL80211_IFTYPE_UNSPECIFIED; 119 priv->listening = false; 120 121 spin_lock(&priv->event_queue_lock); 122 list_splice_init(&priv->event_queue, &list); 123 spin_unlock(&priv->event_queue_lock); 124 __cw1200_free_event_queue(&list); 125 126 127 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 128 priv->join_pending = false; 129 130 for (i = 0; i < 4; i++) 131 cw1200_queue_clear(&priv->tx_queue[i]); 132 mutex_unlock(&priv->conf_mutex); 133 tx_policy_clean(priv); 134 135 /* HACK! */ 136 if (atomic_xchg(&priv->tx_lock, 1) != 1) 137 pr_debug("[STA] TX is force-unlocked due to stop request.\n"); 138 139 wsm_unlock_tx(priv); 140 atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */ 141} 142 143static int cw1200_bssloss_mitigation = 1; 144module_param(cw1200_bssloss_mitigation, int, 0644); 145MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)"); 146 147 148void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv, 149 int init, int good, int bad) 150{ 151 int tx = 0; 152 153 priv->delayed_link_loss = 0; 154 cancel_work_sync(&priv->bss_params_work); 155 156 pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n", 157 priv->bss_loss_state, 158 init, good, bad, 159 atomic_read(&priv->tx_lock), 160 priv->delayed_unjoin); 161 162 /* If we have a pending unjoin */ 163 if (priv->delayed_unjoin) 164 return; 165 166 if (init) { 167 queue_delayed_work(priv->workqueue, 168 &priv->bss_loss_work, 169 HZ); 170 priv->bss_loss_state = 0; 171 172 /* Skip the confimration procedure in P2P case */ 173 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock)) 174 tx = 1; 175 } else if (good) { 176 cancel_delayed_work_sync(&priv->bss_loss_work); 177 priv->bss_loss_state = 0; 178 queue_work(priv->workqueue, &priv->bss_params_work); 179 } else if (bad) { 180 /* XXX Should we just keep going until we time out? */ 181 if (priv->bss_loss_state < 3) 182 tx = 1; 183 } else { 184 cancel_delayed_work_sync(&priv->bss_loss_work); 185 priv->bss_loss_state = 0; 186 } 187 188 /* Bypass mitigation if it's disabled */ 189 if (!cw1200_bssloss_mitigation) 190 tx = 0; 191 192 /* Spit out a NULL packet to our AP if necessary */ 193 if (tx) { 194 struct sk_buff *skb; 195 196 priv->bss_loss_state++; 197 198 skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false); 199 WARN_ON(!skb); 200 if (skb) 201 cw1200_tx(priv->hw, NULL, skb); 202 } 203} 204 205int cw1200_add_interface(struct ieee80211_hw *dev, 206 struct ieee80211_vif *vif) 207{ 208 int ret; 209 struct cw1200_common *priv = dev->priv; 210 /* __le32 auto_calibration_mode = __cpu_to_le32(1); */ 211 212 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 213 IEEE80211_VIF_SUPPORTS_UAPSD | 214 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 215 216 mutex_lock(&priv->conf_mutex); 217 218 if (priv->mode != NL80211_IFTYPE_MONITOR) { 219 mutex_unlock(&priv->conf_mutex); 220 return -EOPNOTSUPP; 221 } 222 223 switch (vif->type) { 224 case NL80211_IFTYPE_STATION: 225 case NL80211_IFTYPE_ADHOC: 226 case NL80211_IFTYPE_MESH_POINT: 227 case NL80211_IFTYPE_AP: 228 priv->mode = vif->type; 229 break; 230 default: 231 mutex_unlock(&priv->conf_mutex); 232 return -EOPNOTSUPP; 233 } 234 235 priv->vif = vif; 236 memcpy(priv->mac_addr, vif->addr, ETH_ALEN); 237 ret = cw1200_setup_mac(priv); 238 /* Enable auto-calibration */ 239 /* Exception in subsequent channel switch; disabled. 240 * wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE, 241 * &auto_calibration_mode, sizeof(auto_calibration_mode)); 242 */ 243 244 mutex_unlock(&priv->conf_mutex); 245 return ret; 246} 247 248void cw1200_remove_interface(struct ieee80211_hw *dev, 249 struct ieee80211_vif *vif) 250{ 251 struct cw1200_common *priv = dev->priv; 252 struct wsm_reset reset = { 253 .reset_statistics = true, 254 }; 255 int i; 256 257 mutex_lock(&priv->conf_mutex); 258 switch (priv->join_status) { 259 case CW1200_JOIN_STATUS_JOINING: 260 case CW1200_JOIN_STATUS_PRE_STA: 261 case CW1200_JOIN_STATUS_STA: 262 case CW1200_JOIN_STATUS_IBSS: 263 wsm_lock_tx(priv); 264 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) 265 wsm_unlock_tx(priv); 266 break; 267 case CW1200_JOIN_STATUS_AP: 268 for (i = 0; priv->link_id_map; ++i) { 269 if (priv->link_id_map & BIT(i)) { 270 reset.link_id = i; 271 wsm_reset(priv, &reset); 272 priv->link_id_map &= ~BIT(i); 273 } 274 } 275 memset(priv->link_id_db, 0, sizeof(priv->link_id_db)); 276 priv->sta_asleep_mask = 0; 277 priv->enable_beacon = false; 278 priv->tx_multicast = false; 279 priv->aid0_bit_set = false; 280 priv->buffered_multicasts = false; 281 priv->pspoll_mask = 0; 282 reset.link_id = 0; 283 wsm_reset(priv, &reset); 284 break; 285 case CW1200_JOIN_STATUS_MONITOR: 286 cw1200_update_listening(priv, false); 287 break; 288 default: 289 break; 290 } 291 priv->vif = NULL; 292 priv->mode = NL80211_IFTYPE_MONITOR; 293 eth_zero_addr(priv->mac_addr); 294 memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo)); 295 cw1200_free_keys(priv); 296 cw1200_setup_mac(priv); 297 priv->listening = false; 298 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 299 if (!__cw1200_flush(priv, true)) 300 wsm_unlock_tx(priv); 301 302 mutex_unlock(&priv->conf_mutex); 303} 304 305int cw1200_change_interface(struct ieee80211_hw *dev, 306 struct ieee80211_vif *vif, 307 enum nl80211_iftype new_type, 308 bool p2p) 309{ 310 int ret = 0; 311 pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type, 312 p2p, vif->type, vif->p2p); 313 314 if (new_type != vif->type || vif->p2p != p2p) { 315 cw1200_remove_interface(dev, vif); 316 vif->type = new_type; 317 vif->p2p = p2p; 318 ret = cw1200_add_interface(dev, vif); 319 } 320 321 return ret; 322} 323 324int cw1200_config(struct ieee80211_hw *dev, u32 changed) 325{ 326 int ret = 0; 327 struct cw1200_common *priv = dev->priv; 328 struct ieee80211_conf *conf = &dev->conf; 329 330 pr_debug("CONFIG CHANGED: %08x\n", changed); 331 332 down(&priv->scan.lock); 333 mutex_lock(&priv->conf_mutex); 334 /* TODO: IEEE80211_CONF_CHANGE_QOS */ 335 /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */ 336 337 if (changed & IEEE80211_CONF_CHANGE_POWER) { 338 priv->output_power = conf->power_level; 339 pr_debug("[STA] TX power: %d\n", priv->output_power); 340 wsm_set_output_power(priv, priv->output_power * 10); 341 } 342 343 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) && 344 (priv->channel != conf->chandef.chan)) { 345 struct ieee80211_channel *ch = conf->chandef.chan; 346 struct wsm_switch_channel channel = { 347 .channel_number = ch->hw_value, 348 }; 349 pr_debug("[STA] Freq %d (wsm ch: %d).\n", 350 ch->center_freq, ch->hw_value); 351 352 /* __cw1200_flush() implicitly locks tx, if successful */ 353 if (!__cw1200_flush(priv, false)) { 354 if (!wsm_switch_channel(priv, &channel)) { 355 ret = wait_event_timeout(priv->channel_switch_done, 356 !priv->channel_switch_in_progress, 357 3 * HZ); 358 if (ret) { 359 /* Already unlocks if successful */ 360 priv->channel = ch; 361 ret = 0; 362 } else { 363 ret = -ETIMEDOUT; 364 } 365 } else { 366 /* Unlock if switch channel fails */ 367 wsm_unlock_tx(priv); 368 } 369 } 370 } 371 372 if (changed & IEEE80211_CONF_CHANGE_PS) { 373 if (!(conf->flags & IEEE80211_CONF_PS)) 374 priv->powersave_mode.mode = WSM_PSM_ACTIVE; 375 else if (conf->dynamic_ps_timeout <= 0) 376 priv->powersave_mode.mode = WSM_PSM_PS; 377 else 378 priv->powersave_mode.mode = WSM_PSM_FAST_PS; 379 380 /* Firmware requires that value for this 1-byte field must 381 * be specified in units of 500us. Values above the 128ms 382 * threshold are not supported. 383 */ 384 if (conf->dynamic_ps_timeout >= 0x80) 385 priv->powersave_mode.fast_psm_idle_period = 0xFF; 386 else 387 priv->powersave_mode.fast_psm_idle_period = 388 conf->dynamic_ps_timeout << 1; 389 390 if (priv->join_status == CW1200_JOIN_STATUS_STA && 391 priv->bss_params.aid) 392 cw1200_set_pm(priv, &priv->powersave_mode); 393 } 394 395 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 396 /* TBD: It looks like it's transparent 397 * there's a monitor interface present -- use this 398 * to determine for example whether to calculate 399 * timestamps for packets or not, do not use instead 400 * of filter flags! 401 */ 402 } 403 404 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 405 struct wsm_operational_mode mode = { 406 .power_mode = cw1200_power_mode, 407 .disable_more_flag_usage = true, 408 }; 409 410 wsm_lock_tx(priv); 411 /* Disable p2p-dev mode forced by TX request */ 412 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) && 413 (conf->flags & IEEE80211_CONF_IDLE) && 414 !priv->listening) { 415 cw1200_disable_listening(priv); 416 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 417 } 418 wsm_set_operational_mode(priv, &mode); 419 wsm_unlock_tx(priv); 420 } 421 422 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { 423 pr_debug("[STA] Retry limits: %d (long), %d (short).\n", 424 conf->long_frame_max_tx_count, 425 conf->short_frame_max_tx_count); 426 spin_lock_bh(&priv->tx_policy_cache.lock); 427 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count; 428 priv->short_frame_max_tx_count = 429 (conf->short_frame_max_tx_count < 0x0F) ? 430 conf->short_frame_max_tx_count : 0x0F; 431 priv->hw->max_rate_tries = priv->short_frame_max_tx_count; 432 spin_unlock_bh(&priv->tx_policy_cache.lock); 433 } 434 mutex_unlock(&priv->conf_mutex); 435 up(&priv->scan.lock); 436 return ret; 437} 438 439void cw1200_update_filtering(struct cw1200_common *priv) 440{ 441 int ret; 442 bool bssid_filtering = !priv->rx_filter.bssid; 443 bool is_p2p = priv->vif && priv->vif->p2p; 444 bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type; 445 446 static struct wsm_beacon_filter_control bf_ctrl; 447 static struct wsm_mib_beacon_filter_table bf_tbl = { 448 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC, 449 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | 450 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | 451 WSM_BEACON_FILTER_IE_HAS_APPEARED, 452 .entry[0].oui[0] = 0x50, 453 .entry[0].oui[1] = 0x6F, 454 .entry[0].oui[2] = 0x9A, 455 .entry[1].ie_id = WLAN_EID_HT_OPERATION, 456 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | 457 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | 458 WSM_BEACON_FILTER_IE_HAS_APPEARED, 459 .entry[2].ie_id = WLAN_EID_ERP_INFO, 460 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | 461 WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | 462 WSM_BEACON_FILTER_IE_HAS_APPEARED, 463 }; 464 465 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) 466 return; 467 else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) 468 bssid_filtering = false; 469 470 if (priv->disable_beacon_filter) { 471 bf_ctrl.enabled = 0; 472 bf_ctrl.bcn_count = 1; 473 bf_tbl.num = __cpu_to_le32(0); 474 } else if (is_p2p || !is_sta) { 475 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE | 476 WSM_BEACON_FILTER_AUTO_ERP; 477 bf_ctrl.bcn_count = 0; 478 bf_tbl.num = __cpu_to_le32(2); 479 } else { 480 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE; 481 bf_ctrl.bcn_count = 0; 482 bf_tbl.num = __cpu_to_le32(3); 483 } 484 485 /* When acting as p2p client being connected to p2p GO, in order to 486 * receive frames from a different p2p device, turn off bssid filter. 487 * 488 * WARNING: FW dependency! 489 * This can only be used with FW WSM371 and its successors. 490 * In that FW version even with bssid filter turned off, 491 * device will block most of the unwanted frames. 492 */ 493 if (is_p2p) 494 bssid_filtering = false; 495 496 ret = wsm_set_rx_filter(priv, &priv->rx_filter); 497 if (!ret) 498 ret = wsm_set_beacon_filter_table(priv, &bf_tbl); 499 if (!ret) 500 ret = wsm_beacon_filter_control(priv, &bf_ctrl); 501 if (!ret) 502 ret = wsm_set_bssid_filtering(priv, bssid_filtering); 503 if (!ret) 504 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter); 505 if (ret) 506 wiphy_err(priv->hw->wiphy, 507 "Update filtering failed: %d.\n", ret); 508 return; 509} 510 511void cw1200_update_filtering_work(struct work_struct *work) 512{ 513 struct cw1200_common *priv = 514 container_of(work, struct cw1200_common, 515 update_filtering_work); 516 517 cw1200_update_filtering(priv); 518} 519 520void cw1200_set_beacon_wakeup_period_work(struct work_struct *work) 521{ 522 struct cw1200_common *priv = 523 container_of(work, struct cw1200_common, 524 set_beacon_wakeup_period_work); 525 526 wsm_set_beacon_wakeup_period(priv, 527 priv->beacon_int * priv->join_dtim_period > 528 MAX_BEACON_SKIP_TIME_MS ? 1 : 529 priv->join_dtim_period, 0); 530} 531 532u64 cw1200_prepare_multicast(struct ieee80211_hw *hw, 533 struct netdev_hw_addr_list *mc_list) 534{ 535 static u8 broadcast_ipv6[ETH_ALEN] = { 536 0x33, 0x33, 0x00, 0x00, 0x00, 0x01 537 }; 538 static u8 broadcast_ipv4[ETH_ALEN] = { 539 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01 540 }; 541 struct cw1200_common *priv = hw->priv; 542 struct netdev_hw_addr *ha; 543 int count = 0; 544 545 /* Disable multicast filtering */ 546 priv->has_multicast_subscription = false; 547 memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter)); 548 549 if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES) 550 return 0; 551 552 /* Enable if requested */ 553 netdev_hw_addr_list_for_each(ha, mc_list) { 554 pr_debug("[STA] multicast: %pM\n", ha->addr); 555 memcpy(&priv->multicast_filter.macaddrs[count], 556 ha->addr, ETH_ALEN); 557 if (!ether_addr_equal(ha->addr, broadcast_ipv4) && 558 !ether_addr_equal(ha->addr, broadcast_ipv6)) 559 priv->has_multicast_subscription = true; 560 count++; 561 } 562 563 if (count) { 564 priv->multicast_filter.enable = __cpu_to_le32(1); 565 priv->multicast_filter.num_addrs = __cpu_to_le32(count); 566 } 567 568 return netdev_hw_addr_list_count(mc_list); 569} 570 571void cw1200_configure_filter(struct ieee80211_hw *dev, 572 unsigned int changed_flags, 573 unsigned int *total_flags, 574 u64 multicast) 575{ 576 struct cw1200_common *priv = dev->priv; 577 bool listening = !!(*total_flags & 578 (FIF_OTHER_BSS | 579 FIF_BCN_PRBRESP_PROMISC | 580 FIF_PROBE_REQ)); 581 582 *total_flags &= FIF_OTHER_BSS | 583 FIF_FCSFAIL | 584 FIF_BCN_PRBRESP_PROMISC | 585 FIF_PROBE_REQ; 586 587 down(&priv->scan.lock); 588 mutex_lock(&priv->conf_mutex); 589 590 priv->rx_filter.promiscuous = 0; 591 priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS | 592 FIF_PROBE_REQ)) ? 1 : 0; 593 priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0; 594 priv->disable_beacon_filter = !(*total_flags & 595 (FIF_BCN_PRBRESP_PROMISC | 596 FIF_PROBE_REQ)); 597 if (priv->listening != listening) { 598 priv->listening = listening; 599 wsm_lock_tx(priv); 600 cw1200_update_listening(priv, listening); 601 wsm_unlock_tx(priv); 602 } 603 cw1200_update_filtering(priv); 604 mutex_unlock(&priv->conf_mutex); 605 up(&priv->scan.lock); 606} 607 608int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif, 609 u16 queue, const struct ieee80211_tx_queue_params *params) 610{ 611 struct cw1200_common *priv = dev->priv; 612 int ret = 0; 613 /* To prevent re-applying PM request OID again and again*/ 614 bool old_uapsd_flags; 615 616 mutex_lock(&priv->conf_mutex); 617 618 if (queue < dev->queues) { 619 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags); 620 621 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0); 622 ret = wsm_set_tx_queue_params(priv, 623 &priv->tx_queue_params.params[queue], queue); 624 if (ret) { 625 ret = -EINVAL; 626 goto out; 627 } 628 629 WSM_EDCA_SET(&priv->edca, queue, params->aifs, 630 params->cw_min, params->cw_max, 631 params->txop, 0xc8, 632 params->uapsd); 633 ret = wsm_set_edca_params(priv, &priv->edca); 634 if (ret) { 635 ret = -EINVAL; 636 goto out; 637 } 638 639 if (priv->mode == NL80211_IFTYPE_STATION) { 640 ret = cw1200_set_uapsd_param(priv, &priv->edca); 641 if (!ret && priv->setbssparams_done && 642 (priv->join_status == CW1200_JOIN_STATUS_STA) && 643 (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags))) 644 ret = cw1200_set_pm(priv, &priv->powersave_mode); 645 } 646 } else { 647 ret = -EINVAL; 648 } 649 650out: 651 mutex_unlock(&priv->conf_mutex); 652 return ret; 653} 654 655int cw1200_get_stats(struct ieee80211_hw *dev, 656 struct ieee80211_low_level_stats *stats) 657{ 658 struct cw1200_common *priv = dev->priv; 659 660 memcpy(stats, &priv->stats, sizeof(*stats)); 661 return 0; 662} 663 664int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg) 665{ 666 struct wsm_set_pm pm = *arg; 667 668 if (priv->uapsd_info.uapsd_flags != 0) 669 pm.mode &= ~WSM_PSM_FAST_PS_FLAG; 670 671 if (memcmp(&pm, &priv->firmware_ps_mode, 672 sizeof(struct wsm_set_pm))) { 673 priv->firmware_ps_mode = pm; 674 return wsm_set_pm(priv, &pm); 675 } else { 676 return 0; 677 } 678} 679 680int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, 681 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 682 struct ieee80211_key_conf *key) 683{ 684 int ret = -EOPNOTSUPP; 685 struct cw1200_common *priv = dev->priv; 686 struct ieee80211_key_seq seq; 687 688 mutex_lock(&priv->conf_mutex); 689 690 if (cmd == SET_KEY) { 691 u8 *peer_addr = NULL; 692 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ? 693 1 : 0; 694 int idx = cw1200_alloc_key(priv); 695 struct wsm_add_key *wsm_key = &priv->keys[idx]; 696 697 if (idx < 0) { 698 ret = -EINVAL; 699 goto finally; 700 } 701 702 if (sta) 703 peer_addr = sta->addr; 704 705 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE | 706 IEEE80211_KEY_FLAG_RESERVE_TAILROOM; 707 708 switch (key->cipher) { 709 case WLAN_CIPHER_SUITE_WEP40: 710 case WLAN_CIPHER_SUITE_WEP104: 711 if (key->keylen > 16) { 712 cw1200_free_key(priv, idx); 713 ret = -EINVAL; 714 goto finally; 715 } 716 717 if (pairwise) { 718 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE; 719 memcpy(wsm_key->wep_pairwise.peer, 720 peer_addr, ETH_ALEN); 721 memcpy(wsm_key->wep_pairwise.keydata, 722 &key->key[0], key->keylen); 723 wsm_key->wep_pairwise.keylen = key->keylen; 724 } else { 725 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT; 726 memcpy(wsm_key->wep_group.keydata, 727 &key->key[0], key->keylen); 728 wsm_key->wep_group.keylen = key->keylen; 729 wsm_key->wep_group.keyid = key->keyidx; 730 } 731 break; 732 case WLAN_CIPHER_SUITE_TKIP: 733 ieee80211_get_key_rx_seq(key, 0, &seq); 734 if (pairwise) { 735 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE; 736 memcpy(wsm_key->tkip_pairwise.peer, 737 peer_addr, ETH_ALEN); 738 memcpy(wsm_key->tkip_pairwise.keydata, 739 &key->key[0], 16); 740 memcpy(wsm_key->tkip_pairwise.tx_mic_key, 741 &key->key[16], 8); 742 memcpy(wsm_key->tkip_pairwise.rx_mic_key, 743 &key->key[24], 8); 744 } else { 745 size_t mic_offset = 746 (priv->mode == NL80211_IFTYPE_AP) ? 747 16 : 24; 748 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP; 749 memcpy(wsm_key->tkip_group.keydata, 750 &key->key[0], 16); 751 memcpy(wsm_key->tkip_group.rx_mic_key, 752 &key->key[mic_offset], 8); 753 754 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff; 755 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff; 756 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff; 757 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff; 758 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff; 759 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff; 760 wsm_key->tkip_group.rx_seqnum[6] = 0; 761 wsm_key->tkip_group.rx_seqnum[7] = 0; 762 763 wsm_key->tkip_group.keyid = key->keyidx; 764 } 765 break; 766 case WLAN_CIPHER_SUITE_CCMP: 767 ieee80211_get_key_rx_seq(key, 0, &seq); 768 if (pairwise) { 769 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE; 770 memcpy(wsm_key->aes_pairwise.peer, 771 peer_addr, ETH_ALEN); 772 memcpy(wsm_key->aes_pairwise.keydata, 773 &key->key[0], 16); 774 } else { 775 wsm_key->type = WSM_KEY_TYPE_AES_GROUP; 776 memcpy(wsm_key->aes_group.keydata, 777 &key->key[0], 16); 778 779 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5]; 780 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4]; 781 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3]; 782 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2]; 783 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1]; 784 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0]; 785 wsm_key->aes_group.rx_seqnum[6] = 0; 786 wsm_key->aes_group.rx_seqnum[7] = 0; 787 wsm_key->aes_group.keyid = key->keyidx; 788 } 789 break; 790 case WLAN_CIPHER_SUITE_SMS4: 791 if (pairwise) { 792 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE; 793 memcpy(wsm_key->wapi_pairwise.peer, 794 peer_addr, ETH_ALEN); 795 memcpy(wsm_key->wapi_pairwise.keydata, 796 &key->key[0], 16); 797 memcpy(wsm_key->wapi_pairwise.mic_key, 798 &key->key[16], 16); 799 wsm_key->wapi_pairwise.keyid = key->keyidx; 800 } else { 801 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP; 802 memcpy(wsm_key->wapi_group.keydata, 803 &key->key[0], 16); 804 memcpy(wsm_key->wapi_group.mic_key, 805 &key->key[16], 16); 806 wsm_key->wapi_group.keyid = key->keyidx; 807 } 808 break; 809 default: 810 pr_warn("Unhandled key type %d\n", key->cipher); 811 cw1200_free_key(priv, idx); 812 ret = -EOPNOTSUPP; 813 goto finally; 814 } 815 ret = wsm_add_key(priv, wsm_key); 816 if (!ret) 817 key->hw_key_idx = idx; 818 else 819 cw1200_free_key(priv, idx); 820 } else if (cmd == DISABLE_KEY) { 821 struct wsm_remove_key wsm_key = { 822 .index = key->hw_key_idx, 823 }; 824 825 if (wsm_key.index > WSM_KEY_MAX_INDEX) { 826 ret = -EINVAL; 827 goto finally; 828 } 829 830 cw1200_free_key(priv, wsm_key.index); 831 ret = wsm_remove_key(priv, &wsm_key); 832 } else { 833 pr_warn("Unhandled key command %d\n", cmd); 834 } 835 836finally: 837 mutex_unlock(&priv->conf_mutex); 838 return ret; 839} 840 841void cw1200_wep_key_work(struct work_struct *work) 842{ 843 struct cw1200_common *priv = 844 container_of(work, struct cw1200_common, wep_key_work); 845 u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id); 846 struct cw1200_queue *queue = &priv->tx_queue[queue_id]; 847 __le32 wep_default_key_id = __cpu_to_le32( 848 priv->wep_default_key_id); 849 850 pr_debug("[STA] Setting default WEP key: %d\n", 851 priv->wep_default_key_id); 852 wsm_flush_tx(priv); 853 wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID, 854 &wep_default_key_id, sizeof(wep_default_key_id)); 855 cw1200_queue_requeue(queue, priv->pending_frame_id); 856 wsm_unlock_tx(priv); 857} 858 859int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 860{ 861 int ret = 0; 862 __le32 val32; 863 struct cw1200_common *priv = hw->priv; 864 865 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) 866 return 0; 867 868 if (value != (u32) -1) 869 val32 = __cpu_to_le32(value); 870 else 871 val32 = 0; /* disabled */ 872 873 if (priv->rts_threshold == value) 874 goto out; 875 876 pr_debug("[STA] Setting RTS threshold: %d\n", 877 priv->rts_threshold); 878 879 /* mutex_lock(&priv->conf_mutex); */ 880 ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD, 881 &val32, sizeof(val32)); 882 if (!ret) 883 priv->rts_threshold = value; 884 /* mutex_unlock(&priv->conf_mutex); */ 885 886out: 887 return ret; 888} 889 890/* If successful, LOCKS the TX queue! */ 891static int __cw1200_flush(struct cw1200_common *priv, bool drop) 892{ 893 int i, ret; 894 895 for (;;) { 896 /* TODO: correct flush handling is required when dev_stop. 897 * Temporary workaround: 2s 898 */ 899 if (drop) { 900 for (i = 0; i < 4; ++i) 901 cw1200_queue_clear(&priv->tx_queue[i]); 902 } else { 903 ret = wait_event_timeout( 904 priv->tx_queue_stats.wait_link_id_empty, 905 cw1200_queue_stats_is_empty( 906 &priv->tx_queue_stats, -1), 907 2 * HZ); 908 } 909 910 if (!drop && ret <= 0) { 911 ret = -ETIMEDOUT; 912 break; 913 } else { 914 ret = 0; 915 } 916 917 wsm_lock_tx(priv); 918 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) { 919 /* Highly unlikely: WSM requeued frames. */ 920 wsm_unlock_tx(priv); 921 continue; 922 } 923 break; 924 } 925 return ret; 926} 927 928void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 929 u32 queues, bool drop) 930{ 931 struct cw1200_common *priv = hw->priv; 932 933 switch (priv->mode) { 934 case NL80211_IFTYPE_MONITOR: 935 drop = true; 936 break; 937 case NL80211_IFTYPE_AP: 938 if (!priv->enable_beacon) 939 drop = true; 940 break; 941 } 942 943 if (!__cw1200_flush(priv, drop)) 944 wsm_unlock_tx(priv); 945 946 return; 947} 948 949/* ******************************************************************** */ 950/* WSM callbacks */ 951 952void cw1200_free_event_queue(struct cw1200_common *priv) 953{ 954 LIST_HEAD(list); 955 956 spin_lock(&priv->event_queue_lock); 957 list_splice_init(&priv->event_queue, &list); 958 spin_unlock(&priv->event_queue_lock); 959 960 __cw1200_free_event_queue(&list); 961} 962 963void cw1200_event_handler(struct work_struct *work) 964{ 965 struct cw1200_common *priv = 966 container_of(work, struct cw1200_common, event_handler); 967 struct cw1200_wsm_event *event; 968 LIST_HEAD(list); 969 970 spin_lock(&priv->event_queue_lock); 971 list_splice_init(&priv->event_queue, &list); 972 spin_unlock(&priv->event_queue_lock); 973 974 list_for_each_entry(event, &list, link) { 975 switch (event->evt.id) { 976 case WSM_EVENT_ERROR: 977 pr_err("Unhandled WSM Error from LMAC\n"); 978 break; 979 case WSM_EVENT_BSS_LOST: 980 pr_debug("[CQM] BSS lost.\n"); 981 cancel_work_sync(&priv->unjoin_work); 982 if (!down_trylock(&priv->scan.lock)) { 983 cw1200_cqm_bssloss_sm(priv, 1, 0, 0); 984 up(&priv->scan.lock); 985 } else { 986 /* Scan is in progress. Delay reporting. 987 * Scan complete will trigger bss_loss_work 988 */ 989 priv->delayed_link_loss = 1; 990 /* Also start a watchdog. */ 991 queue_delayed_work(priv->workqueue, 992 &priv->bss_loss_work, 5*HZ); 993 } 994 break; 995 case WSM_EVENT_BSS_REGAINED: 996 pr_debug("[CQM] BSS regained.\n"); 997 cw1200_cqm_bssloss_sm(priv, 0, 0, 0); 998 cancel_work_sync(&priv->unjoin_work); 999 break; 1000 case WSM_EVENT_RADAR_DETECTED: 1001 wiphy_info(priv->hw->wiphy, "radar pulse detected\n"); 1002 break; 1003 case WSM_EVENT_RCPI_RSSI: 1004 { 1005 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 1006 * RSSI = RCPI / 2 - 110 1007 */ 1008 int rcpi_rssi = (int)(event->evt.data & 0xFF); 1009 int cqm_evt; 1010 if (priv->cqm_use_rssi) 1011 rcpi_rssi = (s8)rcpi_rssi; 1012 else 1013 rcpi_rssi = rcpi_rssi / 2 - 110; 1014 1015 cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ? 1016 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW : 1017 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 1018 pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi); 1019 ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, rcpi_rssi, 1020 GFP_KERNEL); 1021 break; 1022 } 1023 case WSM_EVENT_BT_INACTIVE: 1024 pr_warn("Unhandled BT INACTIVE from LMAC\n"); 1025 break; 1026 case WSM_EVENT_BT_ACTIVE: 1027 pr_warn("Unhandled BT ACTIVE from LMAC\n"); 1028 break; 1029 } 1030 } 1031 __cw1200_free_event_queue(&list); 1032} 1033 1034void cw1200_bss_loss_work(struct work_struct *work) 1035{ 1036 struct cw1200_common *priv = 1037 container_of(work, struct cw1200_common, bss_loss_work.work); 1038 1039 pr_debug("[CQM] Reporting connection loss.\n"); 1040 wsm_lock_tx(priv); 1041 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) 1042 wsm_unlock_tx(priv); 1043} 1044 1045void cw1200_bss_params_work(struct work_struct *work) 1046{ 1047 struct cw1200_common *priv = 1048 container_of(work, struct cw1200_common, bss_params_work); 1049 mutex_lock(&priv->conf_mutex); 1050 1051 priv->bss_params.reset_beacon_loss = 1; 1052 wsm_set_bss_params(priv, &priv->bss_params); 1053 priv->bss_params.reset_beacon_loss = 0; 1054 1055 mutex_unlock(&priv->conf_mutex); 1056} 1057 1058/* ******************************************************************** */ 1059/* Internal API */ 1060 1061/* This function is called to Parse the SDD file 1062 * to extract listen_interval and PTA related information 1063 * sdd is a TLV: u8 id, u8 len, u8 data[] 1064 */ 1065static int cw1200_parse_sdd_file(struct cw1200_common *priv) 1066{ 1067 const u8 *p = priv->sdd->data; 1068 int ret = 0; 1069 1070 while (p + 2 <= priv->sdd->data + priv->sdd->size) { 1071 if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) { 1072 pr_warn("Malformed sdd structure\n"); 1073 return -1; 1074 } 1075 switch (p[0]) { 1076 case SDD_PTA_CFG_ELT_ID: { 1077 u16 v; 1078 if (p[1] < 4) { 1079 pr_warn("SDD_PTA_CFG_ELT_ID malformed\n"); 1080 ret = -1; 1081 break; 1082 } 1083 v = le16_to_cpu(*((__le16 *)(p + 2))); 1084 if (!v) /* non-zero means this is enabled */ 1085 break; 1086 1087 v = le16_to_cpu(*((__le16 *)(p + 4))); 1088 priv->conf_listen_interval = (v >> 7) & 0x1F; 1089 pr_debug("PTA found; Listen Interval %d\n", 1090 priv->conf_listen_interval); 1091 break; 1092 } 1093 case SDD_REFERENCE_FREQUENCY_ELT_ID: { 1094 u16 clk = le16_to_cpu(*((__le16 *)(p + 2))); 1095 if (clk != priv->hw_refclk) 1096 pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n", 1097 clk, priv->hw_refclk); 1098 break; 1099 } 1100 default: 1101 break; 1102 } 1103 p += p[1] + 2; 1104 } 1105 1106 if (!priv->bt_present) { 1107 pr_debug("PTA element NOT found.\n"); 1108 priv->conf_listen_interval = 0; 1109 } 1110 return ret; 1111} 1112 1113int cw1200_setup_mac(struct cw1200_common *priv) 1114{ 1115 int ret = 0; 1116 1117 /* NOTE: There is a bug in FW: it reports signal 1118 * as RSSI if RSSI subscription is enabled. 1119 * It's not enough to set WSM_RCPI_RSSI_USE_RSSI. 1120 * 1121 * NOTE2: RSSI based reports have been switched to RCPI, since 1122 * FW has a bug and RSSI reported values are not stable, 1123 * what can lead to signal level oscilations in user-end applications 1124 */ 1125 struct wsm_rcpi_rssi_threshold threshold = { 1126 .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE | 1127 WSM_RCPI_RSSI_DONT_USE_UPPER | 1128 WSM_RCPI_RSSI_DONT_USE_LOWER, 1129 .rollingAverageCount = 16, 1130 }; 1131 1132 struct wsm_configuration cfg = { 1133 .dot11StationId = &priv->mac_addr[0], 1134 }; 1135 1136 /* Remember the decission here to make sure, we will handle 1137 * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS 1138 */ 1139 if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI) 1140 priv->cqm_use_rssi = true; 1141 1142 if (!priv->sdd) { 1143 ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev); 1144 if (ret) { 1145 pr_err("Can't load sdd file %s.\n", priv->sdd_path); 1146 return ret; 1147 } 1148 cw1200_parse_sdd_file(priv); 1149 } 1150 1151 cfg.dpdData = priv->sdd->data; 1152 cfg.dpdData_size = priv->sdd->size; 1153 ret = wsm_configuration(priv, &cfg); 1154 if (ret) 1155 return ret; 1156 1157 /* Configure RSSI/SCPI reporting as RSSI. */ 1158 wsm_set_rcpi_rssi_threshold(priv, &threshold); 1159 1160 return 0; 1161} 1162 1163static void cw1200_join_complete(struct cw1200_common *priv) 1164{ 1165 pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status); 1166 1167 priv->join_pending = false; 1168 if (priv->join_complete_status) { 1169 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 1170 cw1200_update_listening(priv, priv->listening); 1171 cw1200_do_unjoin(priv); 1172 ieee80211_connection_loss(priv->vif); 1173 } else { 1174 if (priv->mode == NL80211_IFTYPE_ADHOC) 1175 priv->join_status = CW1200_JOIN_STATUS_IBSS; 1176 else 1177 priv->join_status = CW1200_JOIN_STATUS_PRE_STA; 1178 } 1179 wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */ 1180} 1181 1182void cw1200_join_complete_work(struct work_struct *work) 1183{ 1184 struct cw1200_common *priv = 1185 container_of(work, struct cw1200_common, join_complete_work); 1186 mutex_lock(&priv->conf_mutex); 1187 cw1200_join_complete(priv); 1188 mutex_unlock(&priv->conf_mutex); 1189} 1190 1191void cw1200_join_complete_cb(struct cw1200_common *priv, 1192 struct wsm_join_complete *arg) 1193{ 1194 pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n", 1195 arg->status); 1196 1197 if (cancel_delayed_work(&priv->join_timeout)) { 1198 priv->join_complete_status = arg->status; 1199 queue_work(priv->workqueue, &priv->join_complete_work); 1200 } 1201} 1202 1203/* MUST be called with tx_lock held! It will be unlocked for us. */ 1204static void cw1200_do_join(struct cw1200_common *priv) 1205{ 1206 const u8 *bssid; 1207 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; 1208 struct cfg80211_bss *bss = NULL; 1209 struct wsm_protected_mgmt_policy mgmt_policy; 1210 struct wsm_join join = { 1211 .mode = conf->ibss_joined ? 1212 WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS, 1213 .preamble_type = WSM_JOIN_PREAMBLE_LONG, 1214 .probe_for_join = 1, 1215 .atim_window = 0, 1216 .basic_rate_set = cw1200_rate_mask_to_wsm(priv, 1217 conf->basic_rates), 1218 }; 1219 if (delayed_work_pending(&priv->join_timeout)) { 1220 pr_warn("[STA] - Join request already pending, skipping..\n"); 1221 wsm_unlock_tx(priv); 1222 return; 1223 } 1224 1225 if (priv->join_status) 1226 cw1200_do_unjoin(priv); 1227 1228 bssid = priv->vif->bss_conf.bssid; 1229 1230 bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0, 1231 IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY); 1232 1233 if (!bss && !conf->ibss_joined) { 1234 wsm_unlock_tx(priv); 1235 return; 1236 } 1237 1238 mutex_lock(&priv->conf_mutex); 1239 1240 /* Under the conf lock: check scan status and 1241 * bail out if it is in progress. 1242 */ 1243 if (atomic_read(&priv->scan.in_progress)) { 1244 wsm_unlock_tx(priv); 1245 goto done_put; 1246 } 1247 1248 priv->join_pending = true; 1249 1250 /* Sanity check basic rates */ 1251 if (!join.basic_rate_set) 1252 join.basic_rate_set = 7; 1253 1254 /* Sanity check beacon interval */ 1255 if (!priv->beacon_int) 1256 priv->beacon_int = 1; 1257 1258 join.beacon_interval = priv->beacon_int; 1259 1260 /* BT Coex related changes */ 1261 if (priv->bt_present) { 1262 if (((priv->conf_listen_interval * 100) % 1263 priv->beacon_int) == 0) 1264 priv->listen_interval = 1265 ((priv->conf_listen_interval * 100) / 1266 priv->beacon_int); 1267 else 1268 priv->listen_interval = 1269 ((priv->conf_listen_interval * 100) / 1270 priv->beacon_int + 1); 1271 } 1272 1273 if (priv->hw->conf.ps_dtim_period) 1274 priv->join_dtim_period = priv->hw->conf.ps_dtim_period; 1275 join.dtim_period = priv->join_dtim_period; 1276 1277 join.channel_number = priv->channel->hw_value; 1278 join.band = (priv->channel->band == NL80211_BAND_5GHZ) ? 1279 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; 1280 1281 memcpy(join.bssid, bssid, sizeof(join.bssid)); 1282 1283 pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n", 1284 join.bssid, 1285 join.dtim_period, priv->beacon_int); 1286 1287 if (!conf->ibss_joined) { 1288 const u8 *ssidie; 1289 rcu_read_lock(); 1290 ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); 1291 if (ssidie) { 1292 join.ssid_len = ssidie[1]; 1293 memcpy(join.ssid, &ssidie[2], join.ssid_len); 1294 } 1295 rcu_read_unlock(); 1296 } 1297 1298 if (priv->vif->p2p) { 1299 join.flags |= WSM_JOIN_FLAGS_P2P_GO; 1300 join.basic_rate_set = 1301 cw1200_rate_mask_to_wsm(priv, 0xFF0); 1302 } 1303 1304 /* Enable asynchronous join calls */ 1305 if (!conf->ibss_joined) { 1306 join.flags |= WSM_JOIN_FLAGS_FORCE; 1307 join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND; 1308 } 1309 1310 wsm_flush_tx(priv); 1311 1312 /* Stay Awake for Join and Auth Timeouts and a bit more */ 1313 cw1200_pm_stay_awake(&priv->pm_state, 1314 CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT); 1315 1316 cw1200_update_listening(priv, false); 1317 1318 /* Turn on Block ACKs */ 1319 wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask, 1320 priv->ba_rx_tid_mask); 1321 1322 /* Set up timeout */ 1323 if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) { 1324 priv->join_status = CW1200_JOIN_STATUS_JOINING; 1325 queue_delayed_work(priv->workqueue, 1326 &priv->join_timeout, 1327 CW1200_JOIN_TIMEOUT); 1328 } 1329 1330 /* 802.11w protected mgmt frames */ 1331 mgmt_policy.protectedMgmtEnable = 0; 1332 mgmt_policy.unprotectedMgmtFramesAllowed = 1; 1333 mgmt_policy.encryptionForAuthFrame = 1; 1334 wsm_set_protected_mgmt_policy(priv, &mgmt_policy); 1335 1336 /* Perform actual join */ 1337 if (wsm_join(priv, &join)) { 1338 pr_err("[STA] cw1200_join_work: wsm_join failed!\n"); 1339 cancel_delayed_work_sync(&priv->join_timeout); 1340 cw1200_update_listening(priv, priv->listening); 1341 /* Tx lock still held, unjoin will clear it. */ 1342 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) 1343 wsm_unlock_tx(priv); 1344 } else { 1345 if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND)) 1346 cw1200_join_complete(priv); /* Will clear tx_lock */ 1347 1348 /* Upload keys */ 1349 cw1200_upload_keys(priv); 1350 1351 /* Due to beacon filtering it is possible that the 1352 * AP's beacon is not known for the mac80211 stack. 1353 * Disable filtering temporary to make sure the stack 1354 * receives at least one 1355 */ 1356 priv->disable_beacon_filter = true; 1357 } 1358 cw1200_update_filtering(priv); 1359 1360done_put: 1361 mutex_unlock(&priv->conf_mutex); 1362 if (bss) 1363 cfg80211_put_bss(priv->hw->wiphy, bss); 1364} 1365 1366void cw1200_join_timeout(struct work_struct *work) 1367{ 1368 struct cw1200_common *priv = 1369 container_of(work, struct cw1200_common, join_timeout.work); 1370 pr_debug("[WSM] Join timed out.\n"); 1371 wsm_lock_tx(priv); 1372 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) 1373 wsm_unlock_tx(priv); 1374} 1375 1376static void cw1200_do_unjoin(struct cw1200_common *priv) 1377{ 1378 struct wsm_reset reset = { 1379 .reset_statistics = true, 1380 }; 1381 1382 cancel_delayed_work_sync(&priv->join_timeout); 1383 1384 mutex_lock(&priv->conf_mutex); 1385 priv->join_pending = false; 1386 1387 if (atomic_read(&priv->scan.in_progress)) { 1388 if (priv->delayed_unjoin) 1389 wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n"); 1390 else 1391 priv->delayed_unjoin = true; 1392 goto done; 1393 } 1394 1395 priv->delayed_link_loss = false; 1396 1397 if (!priv->join_status) 1398 goto done; 1399 1400 if (priv->join_status == CW1200_JOIN_STATUS_AP) 1401 goto done; 1402 1403 cancel_work_sync(&priv->update_filtering_work); 1404 cancel_work_sync(&priv->set_beacon_wakeup_period_work); 1405 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 1406 1407 /* Unjoin is a reset. */ 1408 wsm_flush_tx(priv); 1409 wsm_keep_alive_period(priv, 0); 1410 wsm_reset(priv, &reset); 1411 wsm_set_output_power(priv, priv->output_power * 10); 1412 priv->join_dtim_period = 0; 1413 cw1200_setup_mac(priv); 1414 cw1200_free_event_queue(priv); 1415 cancel_work_sync(&priv->event_handler); 1416 cw1200_update_listening(priv, priv->listening); 1417 cw1200_cqm_bssloss_sm(priv, 0, 0, 0); 1418 1419 /* Disable Block ACKs */ 1420 wsm_set_block_ack_policy(priv, 0, 0); 1421 1422 priv->disable_beacon_filter = false; 1423 cw1200_update_filtering(priv); 1424 memset(&priv->association_mode, 0, 1425 sizeof(priv->association_mode)); 1426 memset(&priv->bss_params, 0, sizeof(priv->bss_params)); 1427 priv->setbssparams_done = false; 1428 memset(&priv->firmware_ps_mode, 0, 1429 sizeof(priv->firmware_ps_mode)); 1430 1431 pr_debug("[STA] Unjoin completed.\n"); 1432 1433done: 1434 mutex_unlock(&priv->conf_mutex); 1435} 1436 1437void cw1200_unjoin_work(struct work_struct *work) 1438{ 1439 struct cw1200_common *priv = 1440 container_of(work, struct cw1200_common, unjoin_work); 1441 1442 cw1200_do_unjoin(priv); 1443 1444 /* Tell the stack we're dead */ 1445 ieee80211_connection_loss(priv->vif); 1446 1447 wsm_unlock_tx(priv); 1448} 1449 1450int cw1200_enable_listening(struct cw1200_common *priv) 1451{ 1452 struct wsm_start start = { 1453 .mode = WSM_START_MODE_P2P_DEV, 1454 .band = WSM_PHY_BAND_2_4G, 1455 .beacon_interval = 100, 1456 .dtim_period = 1, 1457 .probe_delay = 0, 1458 .basic_rate_set = 0x0F, 1459 }; 1460 1461 if (priv->channel) { 1462 start.band = priv->channel->band == NL80211_BAND_5GHZ ? 1463 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; 1464 start.channel_number = priv->channel->hw_value; 1465 } else { 1466 start.band = WSM_PHY_BAND_2_4G; 1467 start.channel_number = 1; 1468 } 1469 1470 return wsm_start(priv, &start); 1471} 1472 1473int cw1200_disable_listening(struct cw1200_common *priv) 1474{ 1475 int ret; 1476 struct wsm_reset reset = { 1477 .reset_statistics = true, 1478 }; 1479 ret = wsm_reset(priv, &reset); 1480 return ret; 1481} 1482 1483void cw1200_update_listening(struct cw1200_common *priv, bool enabled) 1484{ 1485 if (enabled) { 1486 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) { 1487 if (!cw1200_enable_listening(priv)) 1488 priv->join_status = CW1200_JOIN_STATUS_MONITOR; 1489 wsm_set_probe_responder(priv, true); 1490 } 1491 } else { 1492 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) { 1493 if (!cw1200_disable_listening(priv)) 1494 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 1495 wsm_set_probe_responder(priv, false); 1496 } 1497 } 1498} 1499 1500int cw1200_set_uapsd_param(struct cw1200_common *priv, 1501 const struct wsm_edca_params *arg) 1502{ 1503 int ret; 1504 u16 uapsd_flags = 0; 1505 1506 /* Here's the mapping AC [queue, bit] 1507 * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0] 1508 */ 1509 1510 if (arg->uapsd_enable[0]) 1511 uapsd_flags |= 1 << 3; 1512 1513 if (arg->uapsd_enable[1]) 1514 uapsd_flags |= 1 << 2; 1515 1516 if (arg->uapsd_enable[2]) 1517 uapsd_flags |= 1 << 1; 1518 1519 if (arg->uapsd_enable[3]) 1520 uapsd_flags |= 1; 1521 1522 /* Currently pseudo U-APSD operation is not supported, so setting 1523 * MinAutoTriggerInterval, MaxAutoTriggerInterval and 1524 * AutoTriggerStep to 0 1525 */ 1526 1527 priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags); 1528 priv->uapsd_info.min_auto_trigger_interval = 0; 1529 priv->uapsd_info.max_auto_trigger_interval = 0; 1530 priv->uapsd_info.auto_trigger_step = 0; 1531 1532 ret = wsm_set_uapsd_info(priv, &priv->uapsd_info); 1533 return ret; 1534} 1535 1536/* ******************************************************************** */ 1537/* AP API */ 1538 1539int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1540 struct ieee80211_sta *sta) 1541{ 1542 struct cw1200_common *priv = hw->priv; 1543 struct cw1200_sta_priv *sta_priv = 1544 (struct cw1200_sta_priv *)&sta->drv_priv; 1545 struct cw1200_link_entry *entry; 1546 struct sk_buff *skb; 1547 1548 if (priv->mode != NL80211_IFTYPE_AP) 1549 return 0; 1550 1551 sta_priv->link_id = cw1200_find_link_id(priv, sta->addr); 1552 if (WARN_ON(!sta_priv->link_id)) { 1553 wiphy_info(priv->hw->wiphy, 1554 "[AP] No more link IDs available.\n"); 1555 return -ENOENT; 1556 } 1557 1558 entry = &priv->link_id_db[sta_priv->link_id - 1]; 1559 spin_lock_bh(&priv->ps_state_lock); 1560 if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) == 1561 IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 1562 priv->sta_asleep_mask |= BIT(sta_priv->link_id); 1563 entry->status = CW1200_LINK_HARD; 1564 while ((skb = skb_dequeue(&entry->rx_queue))) 1565 ieee80211_rx_irqsafe(priv->hw, skb); 1566 spin_unlock_bh(&priv->ps_state_lock); 1567 return 0; 1568} 1569 1570int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1571 struct ieee80211_sta *sta) 1572{ 1573 struct cw1200_common *priv = hw->priv; 1574 struct cw1200_sta_priv *sta_priv = 1575 (struct cw1200_sta_priv *)&sta->drv_priv; 1576 struct cw1200_link_entry *entry; 1577 1578 if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id) 1579 return 0; 1580 1581 entry = &priv->link_id_db[sta_priv->link_id - 1]; 1582 spin_lock_bh(&priv->ps_state_lock); 1583 entry->status = CW1200_LINK_RESERVE; 1584 entry->timestamp = jiffies; 1585 wsm_lock_tx_async(priv); 1586 if (queue_work(priv->workqueue, &priv->link_id_work) <= 0) 1587 wsm_unlock_tx(priv); 1588 spin_unlock_bh(&priv->ps_state_lock); 1589 flush_workqueue(priv->workqueue); 1590 return 0; 1591} 1592 1593static void __cw1200_sta_notify(struct ieee80211_hw *dev, 1594 struct ieee80211_vif *vif, 1595 enum sta_notify_cmd notify_cmd, 1596 int link_id) 1597{ 1598 struct cw1200_common *priv = dev->priv; 1599 u32 bit, prev; 1600 1601 /* Zero link id means "for all link IDs" */ 1602 if (link_id) 1603 bit = BIT(link_id); 1604 else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE)) 1605 bit = 0; 1606 else 1607 bit = priv->link_id_map; 1608 prev = priv->sta_asleep_mask & bit; 1609 1610 switch (notify_cmd) { 1611 case STA_NOTIFY_SLEEP: 1612 if (!prev) { 1613 if (priv->buffered_multicasts && 1614 !priv->sta_asleep_mask) 1615 queue_work(priv->workqueue, 1616 &priv->multicast_start_work); 1617 priv->sta_asleep_mask |= bit; 1618 } 1619 break; 1620 case STA_NOTIFY_AWAKE: 1621 if (prev) { 1622 priv->sta_asleep_mask &= ~bit; 1623 priv->pspoll_mask &= ~bit; 1624 if (priv->tx_multicast && link_id && 1625 !priv->sta_asleep_mask) 1626 queue_work(priv->workqueue, 1627 &priv->multicast_stop_work); 1628 cw1200_bh_wakeup(priv); 1629 } 1630 break; 1631 } 1632} 1633 1634void cw1200_sta_notify(struct ieee80211_hw *dev, 1635 struct ieee80211_vif *vif, 1636 enum sta_notify_cmd notify_cmd, 1637 struct ieee80211_sta *sta) 1638{ 1639 struct cw1200_common *priv = dev->priv; 1640 struct cw1200_sta_priv *sta_priv = 1641 (struct cw1200_sta_priv *)&sta->drv_priv; 1642 1643 spin_lock_bh(&priv->ps_state_lock); 1644 __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id); 1645 spin_unlock_bh(&priv->ps_state_lock); 1646} 1647 1648static void cw1200_ps_notify(struct cw1200_common *priv, 1649 int link_id, bool ps) 1650{ 1651 if (link_id > CW1200_MAX_STA_IN_AP_MODE) 1652 return; 1653 1654 pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n", 1655 ps ? "Stop" : "Start", 1656 link_id, priv->sta_asleep_mask); 1657 1658 __cw1200_sta_notify(priv->hw, priv->vif, 1659 ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id); 1660} 1661 1662static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set) 1663{ 1664 struct sk_buff *skb; 1665 struct wsm_update_ie update_ie = { 1666 .what = WSM_UPDATE_IE_BEACON, 1667 .count = 1, 1668 }; 1669 u16 tim_offset, tim_length; 1670 1671 pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis"); 1672 1673 skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, 1674 &tim_offset, &tim_length); 1675 if (!skb) { 1676 if (!__cw1200_flush(priv, true)) 1677 wsm_unlock_tx(priv); 1678 return -ENOENT; 1679 } 1680 1681 if (tim_offset && tim_length >= 6) { 1682 /* Ignore DTIM count from mac80211: 1683 * firmware handles DTIM internally. 1684 */ 1685 skb->data[tim_offset + 2] = 0; 1686 1687 /* Set/reset aid0 bit */ 1688 if (aid0_bit_set) 1689 skb->data[tim_offset + 4] |= 1; 1690 else 1691 skb->data[tim_offset + 4] &= ~1; 1692 } 1693 1694 update_ie.ies = &skb->data[tim_offset]; 1695 update_ie.length = tim_length; 1696 wsm_update_ie(priv, &update_ie); 1697 1698 dev_kfree_skb(skb); 1699 1700 return 0; 1701} 1702 1703void cw1200_set_tim_work(struct work_struct *work) 1704{ 1705 struct cw1200_common *priv = 1706 container_of(work, struct cw1200_common, set_tim_work); 1707 (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set); 1708} 1709 1710int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, 1711 bool set) 1712{ 1713 struct cw1200_common *priv = dev->priv; 1714 queue_work(priv->workqueue, &priv->set_tim_work); 1715 return 0; 1716} 1717 1718void cw1200_set_cts_work(struct work_struct *work) 1719{ 1720 struct cw1200_common *priv = 1721 container_of(work, struct cw1200_common, set_cts_work); 1722 1723 u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0}; 1724 struct wsm_update_ie update_ie = { 1725 .what = WSM_UPDATE_IE_BEACON, 1726 .count = 1, 1727 .ies = erp_ie, 1728 .length = 3, 1729 }; 1730 u32 erp_info; 1731 __le32 use_cts_prot; 1732 mutex_lock(&priv->conf_mutex); 1733 erp_info = priv->erp_info; 1734 mutex_unlock(&priv->conf_mutex); 1735 use_cts_prot = 1736 erp_info & WLAN_ERP_USE_PROTECTION ? 1737 __cpu_to_le32(1) : 0; 1738 1739 erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info; 1740 1741 pr_debug("[STA] ERP information 0x%x\n", erp_info); 1742 1743 wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION, 1744 &use_cts_prot, sizeof(use_cts_prot)); 1745 wsm_update_ie(priv, &update_ie); 1746 1747 return; 1748} 1749 1750static int cw1200_set_btcoexinfo(struct cw1200_common *priv) 1751{ 1752 struct wsm_override_internal_txrate arg; 1753 int ret = 0; 1754 1755 if (priv->mode == NL80211_IFTYPE_STATION) { 1756 /* Plumb PSPOLL and NULL template */ 1757 cw1200_upload_pspoll(priv); 1758 cw1200_upload_null(priv); 1759 cw1200_upload_qosnull(priv); 1760 } else { 1761 return 0; 1762 } 1763 1764 memset(&arg, 0, sizeof(struct wsm_override_internal_txrate)); 1765 1766 if (!priv->vif->p2p) { 1767 /* STATION mode */ 1768 if (priv->bss_params.operational_rate_set & ~0xF) { 1769 pr_debug("[STA] STA has ERP rates\n"); 1770 /* G or BG mode */ 1771 arg.internalTxRate = (__ffs( 1772 priv->bss_params.operational_rate_set & ~0xF)); 1773 } else { 1774 pr_debug("[STA] STA has non ERP rates\n"); 1775 /* B only mode */ 1776 arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); 1777 } 1778 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); 1779 } else { 1780 /* P2P mode */ 1781 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); 1782 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); 1783 } 1784 1785 pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n", 1786 priv->mode, 1787 arg.internalTxRate, 1788 arg.nonErpInternalTxRate); 1789 1790 ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE, 1791 &arg, sizeof(arg)); 1792 1793 return ret; 1794} 1795 1796void cw1200_bss_info_changed(struct ieee80211_hw *dev, 1797 struct ieee80211_vif *vif, 1798 struct ieee80211_bss_conf *info, 1799 u32 changed) 1800{ 1801 struct cw1200_common *priv = dev->priv; 1802 bool do_join = false; 1803 1804 mutex_lock(&priv->conf_mutex); 1805 1806 pr_debug("BSS CHANGED: %08x\n", changed); 1807 1808 /* TODO: BSS_CHANGED_QOS */ 1809 /* TODO: BSS_CHANGED_TXPOWER */ 1810 1811 if (changed & BSS_CHANGED_ARP_FILTER) { 1812 struct wsm_mib_arp_ipv4_filter filter = {0}; 1813 int i; 1814 1815 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n", 1816 info->arp_addr_cnt); 1817 1818 /* Currently only one IP address is supported by firmware. 1819 * In case of more IPs arp filtering will be disabled. 1820 */ 1821 if (info->arp_addr_cnt > 0 && 1822 info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) { 1823 for (i = 0; i < info->arp_addr_cnt; i++) { 1824 filter.ipv4addrs[i] = info->arp_addr_list[i]; 1825 pr_debug("[STA] addr[%d]: 0x%X\n", 1826 i, filter.ipv4addrs[i]); 1827 } 1828 filter.enable = __cpu_to_le32(1); 1829 } 1830 1831 pr_debug("[STA] arp ip filter enable: %d\n", 1832 __le32_to_cpu(filter.enable)); 1833 1834 wsm_set_arp_ipv4_filter(priv, &filter); 1835 } 1836 1837 if (changed & 1838 (BSS_CHANGED_BEACON | 1839 BSS_CHANGED_AP_PROBE_RESP | 1840 BSS_CHANGED_BSSID | 1841 BSS_CHANGED_SSID | 1842 BSS_CHANGED_IBSS)) { 1843 pr_debug("BSS_CHANGED_BEACON\n"); 1844 priv->beacon_int = info->beacon_int; 1845 cw1200_update_beaconing(priv); 1846 cw1200_upload_beacon(priv); 1847 } 1848 1849 if (changed & BSS_CHANGED_BEACON_ENABLED) { 1850 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon); 1851 1852 if (priv->enable_beacon != info->enable_beacon) { 1853 cw1200_enable_beaconing(priv, info->enable_beacon); 1854 priv->enable_beacon = info->enable_beacon; 1855 } 1856 } 1857 1858 if (changed & BSS_CHANGED_BEACON_INT) { 1859 pr_debug("CHANGED_BEACON_INT\n"); 1860 if (info->ibss_joined) 1861 do_join = true; 1862 else if (priv->join_status == CW1200_JOIN_STATUS_AP) 1863 cw1200_update_beaconing(priv); 1864 } 1865 1866 /* assoc/disassoc, or maybe AID changed */ 1867 if (changed & BSS_CHANGED_ASSOC) { 1868 wsm_lock_tx(priv); 1869 priv->wep_default_key_id = -1; 1870 wsm_unlock_tx(priv); 1871 } 1872 1873 if (changed & BSS_CHANGED_BSSID) { 1874 pr_debug("BSS_CHANGED_BSSID\n"); 1875 do_join = true; 1876 } 1877 1878 if (changed & 1879 (BSS_CHANGED_ASSOC | 1880 BSS_CHANGED_BSSID | 1881 BSS_CHANGED_IBSS | 1882 BSS_CHANGED_BASIC_RATES | 1883 BSS_CHANGED_HT)) { 1884 pr_debug("BSS_CHANGED_ASSOC\n"); 1885 if (info->assoc) { 1886 if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) { 1887 ieee80211_connection_loss(vif); 1888 mutex_unlock(&priv->conf_mutex); 1889 return; 1890 } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) { 1891 priv->join_status = CW1200_JOIN_STATUS_STA; 1892 } 1893 } else { 1894 do_join = true; 1895 } 1896 1897 if (info->assoc || info->ibss_joined) { 1898 struct ieee80211_sta *sta = NULL; 1899 __le32 htprot = 0; 1900 1901 if (info->dtim_period) 1902 priv->join_dtim_period = info->dtim_period; 1903 priv->beacon_int = info->beacon_int; 1904 1905 rcu_read_lock(); 1906 1907 if (info->bssid && !info->ibss_joined) 1908 sta = ieee80211_find_sta(vif, info->bssid); 1909 if (sta) { 1910 priv->ht_info.ht_cap = sta->ht_cap; 1911 priv->bss_params.operational_rate_set = 1912 cw1200_rate_mask_to_wsm(priv, 1913 sta->supp_rates[priv->channel->band]); 1914 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef); 1915 priv->ht_info.operation_mode = info->ht_operation_mode; 1916 } else { 1917 memset(&priv->ht_info, 0, 1918 sizeof(priv->ht_info)); 1919 priv->bss_params.operational_rate_set = -1; 1920 } 1921 rcu_read_unlock(); 1922 1923 /* Non Greenfield stations present */ 1924 if (priv->ht_info.operation_mode & 1925 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) 1926 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT); 1927 1928 /* Set HT protection method */ 1929 htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2); 1930 1931 /* TODO: 1932 * STBC_param.dual_cts 1933 * STBC_param.LSIG_TXOP_FILL 1934 */ 1935 1936 wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION, 1937 &htprot, sizeof(htprot)); 1938 1939 priv->association_mode.greenfield = 1940 cw1200_ht_greenfield(&priv->ht_info); 1941 priv->association_mode.flags = 1942 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES | 1943 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE | 1944 WSM_ASSOCIATION_MODE_USE_HT_MODE | 1945 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET | 1946 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING; 1947 priv->association_mode.preamble = 1948 info->use_short_preamble ? 1949 WSM_JOIN_PREAMBLE_SHORT : 1950 WSM_JOIN_PREAMBLE_LONG; 1951 priv->association_mode.basic_rate_set = __cpu_to_le32( 1952 cw1200_rate_mask_to_wsm(priv, 1953 info->basic_rates)); 1954 priv->association_mode.mpdu_start_spacing = 1955 cw1200_ht_ampdu_density(&priv->ht_info); 1956 1957 cw1200_cqm_bssloss_sm(priv, 0, 0, 0); 1958 cancel_work_sync(&priv->unjoin_work); 1959 1960 priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count; 1961 priv->bss_params.aid = info->aid; 1962 1963 if (priv->join_dtim_period < 1) 1964 priv->join_dtim_period = 1; 1965 1966 pr_debug("[STA] DTIM %d, interval: %d\n", 1967 priv->join_dtim_period, priv->beacon_int); 1968 pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n", 1969 priv->association_mode.preamble, 1970 priv->association_mode.greenfield, 1971 priv->bss_params.aid, 1972 priv->bss_params.operational_rate_set, 1973 priv->association_mode.basic_rate_set); 1974 wsm_set_association_mode(priv, &priv->association_mode); 1975 1976 if (!info->ibss_joined) { 1977 wsm_keep_alive_period(priv, 30 /* sec */); 1978 wsm_set_bss_params(priv, &priv->bss_params); 1979 priv->setbssparams_done = true; 1980 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work); 1981 cw1200_set_pm(priv, &priv->powersave_mode); 1982 } 1983 if (priv->vif->p2p) { 1984 pr_debug("[STA] Setting p2p powersave configuration.\n"); 1985 wsm_set_p2p_ps_modeinfo(priv, 1986 &priv->p2p_ps_modeinfo); 1987 } 1988 if (priv->bt_present) 1989 cw1200_set_btcoexinfo(priv); 1990 } else { 1991 memset(&priv->association_mode, 0, 1992 sizeof(priv->association_mode)); 1993 memset(&priv->bss_params, 0, sizeof(priv->bss_params)); 1994 } 1995 } 1996 1997 /* ERP Protection */ 1998 if (changed & (BSS_CHANGED_ASSOC | 1999 BSS_CHANGED_ERP_CTS_PROT | 2000 BSS_CHANGED_ERP_PREAMBLE)) { 2001 u32 prev_erp_info = priv->erp_info; 2002 if (info->use_cts_prot) 2003 priv->erp_info |= WLAN_ERP_USE_PROTECTION; 2004 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT)) 2005 priv->erp_info &= ~WLAN_ERP_USE_PROTECTION; 2006 2007 if (info->use_short_preamble) 2008 priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE; 2009 else 2010 priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE; 2011 2012 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info); 2013 2014 if (prev_erp_info != priv->erp_info) 2015 queue_work(priv->workqueue, &priv->set_cts_work); 2016 } 2017 2018 /* ERP Slottime */ 2019 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) { 2020 __le32 slot_time = info->use_short_slot ? 2021 __cpu_to_le32(9) : __cpu_to_le32(20); 2022 pr_debug("[STA] Slot time: %d us.\n", 2023 __le32_to_cpu(slot_time)); 2024 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME, 2025 &slot_time, sizeof(slot_time)); 2026 } 2027 2028 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) { 2029 struct wsm_rcpi_rssi_threshold threshold = { 2030 .rollingAverageCount = 8, 2031 }; 2032 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n", 2033 info->cqm_rssi_thold, info->cqm_rssi_hyst); 2034 priv->cqm_rssi_thold = info->cqm_rssi_thold; 2035 priv->cqm_rssi_hyst = info->cqm_rssi_hyst; 2036 2037 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) { 2038 /* RSSI subscription enabled */ 2039 /* TODO: It's not a correct way of setting threshold. 2040 * Upper and lower must be set equal here and adjusted 2041 * in callback. However current implementation is much 2042 * more relaible and stable. 2043 */ 2044 2045 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 2046 * RSSI = RCPI / 2 - 110 2047 */ 2048 if (priv->cqm_use_rssi) { 2049 threshold.upperThreshold = 2050 info->cqm_rssi_thold + info->cqm_rssi_hyst; 2051 threshold.lowerThreshold = 2052 info->cqm_rssi_thold; 2053 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; 2054 } else { 2055 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2; 2056 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2; 2057 } 2058 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE; 2059 } else { 2060 /* There is a bug in FW, see sta.c. We have to enable 2061 * dummy subscription to get correct RSSI values. 2062 */ 2063 threshold.rssiRcpiMode |= 2064 WSM_RCPI_RSSI_THRESHOLD_ENABLE | 2065 WSM_RCPI_RSSI_DONT_USE_UPPER | 2066 WSM_RCPI_RSSI_DONT_USE_LOWER; 2067 if (priv->cqm_use_rssi) 2068 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; 2069 } 2070 wsm_set_rcpi_rssi_threshold(priv, &threshold); 2071 } 2072 mutex_unlock(&priv->conf_mutex); 2073 2074 if (do_join) { 2075 wsm_lock_tx(priv); 2076 cw1200_do_join(priv); /* Will unlock it for us */ 2077 } 2078} 2079 2080void cw1200_multicast_start_work(struct work_struct *work) 2081{ 2082 struct cw1200_common *priv = 2083 container_of(work, struct cw1200_common, multicast_start_work); 2084 long tmo = priv->join_dtim_period * 2085 (priv->beacon_int + 20) * HZ / 1024; 2086 2087 cancel_work_sync(&priv->multicast_stop_work); 2088 2089 if (!priv->aid0_bit_set) { 2090 wsm_lock_tx(priv); 2091 cw1200_set_tim_impl(priv, true); 2092 priv->aid0_bit_set = true; 2093 mod_timer(&priv->mcast_timeout, jiffies + tmo); 2094 wsm_unlock_tx(priv); 2095 } 2096} 2097 2098void cw1200_multicast_stop_work(struct work_struct *work) 2099{ 2100 struct cw1200_common *priv = 2101 container_of(work, struct cw1200_common, multicast_stop_work); 2102 2103 if (priv->aid0_bit_set) { 2104 del_timer_sync(&priv->mcast_timeout); 2105 wsm_lock_tx(priv); 2106 priv->aid0_bit_set = false; 2107 cw1200_set_tim_impl(priv, false); 2108 wsm_unlock_tx(priv); 2109 } 2110} 2111 2112void cw1200_mcast_timeout(struct timer_list *t) 2113{ 2114 struct cw1200_common *priv = from_timer(priv, t, mcast_timeout); 2115 2116 wiphy_warn(priv->hw->wiphy, 2117 "Multicast delivery timeout.\n"); 2118 spin_lock_bh(&priv->ps_state_lock); 2119 priv->tx_multicast = priv->aid0_bit_set && 2120 priv->buffered_multicasts; 2121 if (priv->tx_multicast) 2122 cw1200_bh_wakeup(priv); 2123 spin_unlock_bh(&priv->ps_state_lock); 2124} 2125 2126int cw1200_ampdu_action(struct ieee80211_hw *hw, 2127 struct ieee80211_vif *vif, 2128 struct ieee80211_ampdu_params *params) 2129{ 2130 /* Aggregation is implemented fully in firmware, 2131 * including block ack negotiation. Do not allow 2132 * mac80211 stack to do anything: it interferes with 2133 * the firmware. 2134 */ 2135 2136 /* Note that we still need this function stubbed. */ 2137 return -ENOTSUPP; 2138} 2139 2140/* ******************************************************************** */ 2141/* WSM callback */ 2142void cw1200_suspend_resume(struct cw1200_common *priv, 2143 struct wsm_suspend_resume *arg) 2144{ 2145 pr_debug("[AP] %s: %s\n", 2146 arg->stop ? "stop" : "start", 2147 arg->multicast ? "broadcast" : "unicast"); 2148 2149 if (arg->multicast) { 2150 bool cancel_tmo = false; 2151 spin_lock_bh(&priv->ps_state_lock); 2152 if (arg->stop) { 2153 priv->tx_multicast = false; 2154 } else { 2155 /* Firmware sends this indication every DTIM if there 2156 * is a STA in powersave connected. There is no reason 2157 * to suspend, following wakeup will consume much more 2158 * power than it could be saved. 2159 */ 2160 cw1200_pm_stay_awake(&priv->pm_state, 2161 priv->join_dtim_period * 2162 (priv->beacon_int + 20) * HZ / 1024); 2163 priv->tx_multicast = (priv->aid0_bit_set && 2164 priv->buffered_multicasts); 2165 if (priv->tx_multicast) { 2166 cancel_tmo = true; 2167 cw1200_bh_wakeup(priv); 2168 } 2169 } 2170 spin_unlock_bh(&priv->ps_state_lock); 2171 if (cancel_tmo) 2172 del_timer_sync(&priv->mcast_timeout); 2173 } else { 2174 spin_lock_bh(&priv->ps_state_lock); 2175 cw1200_ps_notify(priv, arg->link_id, arg->stop); 2176 spin_unlock_bh(&priv->ps_state_lock); 2177 if (!arg->stop) 2178 cw1200_bh_wakeup(priv); 2179 } 2180 return; 2181} 2182 2183/* ******************************************************************** */ 2184/* AP privates */ 2185 2186static int cw1200_upload_beacon(struct cw1200_common *priv) 2187{ 2188 int ret = 0; 2189 struct ieee80211_mgmt *mgmt; 2190 struct wsm_template_frame frame = { 2191 .frame_type = WSM_FRAME_TYPE_BEACON, 2192 }; 2193 2194 u16 tim_offset; 2195 u16 tim_len; 2196 2197 if (priv->mode == NL80211_IFTYPE_STATION || 2198 priv->mode == NL80211_IFTYPE_MONITOR || 2199 priv->mode == NL80211_IFTYPE_UNSPECIFIED) 2200 goto done; 2201 2202 if (priv->vif->p2p) 2203 frame.rate = WSM_TRANSMIT_RATE_6; 2204 2205 frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, 2206 &tim_offset, &tim_len); 2207 if (!frame.skb) 2208 return -ENOMEM; 2209 2210 ret = wsm_set_template_frame(priv, &frame); 2211 2212 if (ret) 2213 goto done; 2214 2215 /* TODO: Distill probe resp; remove TIM 2216 * and any other beacon-specific IEs 2217 */ 2218 mgmt = (void *)frame.skb->data; 2219 mgmt->frame_control = 2220 __cpu_to_le16(IEEE80211_FTYPE_MGMT | 2221 IEEE80211_STYPE_PROBE_RESP); 2222 2223 frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE; 2224 if (priv->vif->p2p) { 2225 ret = wsm_set_probe_responder(priv, true); 2226 } else { 2227 ret = wsm_set_template_frame(priv, &frame); 2228 wsm_set_probe_responder(priv, false); 2229 } 2230 2231done: 2232 dev_kfree_skb(frame.skb); 2233 2234 return ret; 2235} 2236 2237static int cw1200_upload_pspoll(struct cw1200_common *priv) 2238{ 2239 int ret = 0; 2240 struct wsm_template_frame frame = { 2241 .frame_type = WSM_FRAME_TYPE_PS_POLL, 2242 .rate = 0xFF, 2243 }; 2244 2245 2246 frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif); 2247 if (!frame.skb) 2248 return -ENOMEM; 2249 2250 ret = wsm_set_template_frame(priv, &frame); 2251 2252 dev_kfree_skb(frame.skb); 2253 2254 return ret; 2255} 2256 2257static int cw1200_upload_null(struct cw1200_common *priv) 2258{ 2259 int ret = 0; 2260 struct wsm_template_frame frame = { 2261 .frame_type = WSM_FRAME_TYPE_NULL, 2262 .rate = 0xFF, 2263 }; 2264 2265 frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false); 2266 if (!frame.skb) 2267 return -ENOMEM; 2268 2269 ret = wsm_set_template_frame(priv, &frame); 2270 2271 dev_kfree_skb(frame.skb); 2272 2273 return ret; 2274} 2275 2276static int cw1200_upload_qosnull(struct cw1200_common *priv) 2277{ 2278 /* TODO: This needs to be implemented 2279 2280 struct wsm_template_frame frame = { 2281 .frame_type = WSM_FRAME_TYPE_QOS_NULL, 2282 .rate = 0xFF, 2283 }; 2284 2285 frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif); 2286 if (!frame.skb) 2287 return -ENOMEM; 2288 2289 ret = wsm_set_template_frame(priv, &frame); 2290 2291 dev_kfree_skb(frame.skb); 2292 2293 */ 2294 return 0; 2295} 2296 2297static int cw1200_enable_beaconing(struct cw1200_common *priv, 2298 bool enable) 2299{ 2300 struct wsm_beacon_transmit transmit = { 2301 .enable_beaconing = enable, 2302 }; 2303 2304 return wsm_beacon_transmit(priv, &transmit); 2305} 2306 2307static int cw1200_start_ap(struct cw1200_common *priv) 2308{ 2309 int ret; 2310 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; 2311 struct wsm_start start = { 2312 .mode = priv->vif->p2p ? 2313 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP, 2314 .band = (priv->channel->band == NL80211_BAND_5GHZ) ? 2315 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G, 2316 .channel_number = priv->channel->hw_value, 2317 .beacon_interval = conf->beacon_int, 2318 .dtim_period = conf->dtim_period, 2319 .preamble = conf->use_short_preamble ? 2320 WSM_JOIN_PREAMBLE_SHORT : 2321 WSM_JOIN_PREAMBLE_LONG, 2322 .probe_delay = 100, 2323 .basic_rate_set = cw1200_rate_mask_to_wsm(priv, 2324 conf->basic_rates), 2325 }; 2326 struct wsm_operational_mode mode = { 2327 .power_mode = cw1200_power_mode, 2328 .disable_more_flag_usage = true, 2329 }; 2330 2331 memset(start.ssid, 0, sizeof(start.ssid)); 2332 if (!conf->hidden_ssid) { 2333 start.ssid_len = conf->ssid_len; 2334 memcpy(start.ssid, conf->ssid, start.ssid_len); 2335 } 2336 2337 priv->beacon_int = conf->beacon_int; 2338 priv->join_dtim_period = conf->dtim_period; 2339 2340 memset(&priv->link_id_db, 0, sizeof(priv->link_id_db)); 2341 2342 pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n", 2343 start.channel_number, start.band, 2344 start.beacon_interval, start.dtim_period, 2345 start.basic_rate_set, 2346 start.ssid_len, start.ssid); 2347 ret = wsm_start(priv, &start); 2348 if (!ret) 2349 ret = cw1200_upload_keys(priv); 2350 if (!ret && priv->vif->p2p) { 2351 pr_debug("[AP] Setting p2p powersave configuration.\n"); 2352 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo); 2353 } 2354 if (!ret) { 2355 wsm_set_block_ack_policy(priv, 0, 0); 2356 priv->join_status = CW1200_JOIN_STATUS_AP; 2357 cw1200_update_filtering(priv); 2358 } 2359 wsm_set_operational_mode(priv, &mode); 2360 return ret; 2361} 2362 2363static int cw1200_update_beaconing(struct cw1200_common *priv) 2364{ 2365 struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; 2366 struct wsm_reset reset = { 2367 .link_id = 0, 2368 .reset_statistics = true, 2369 }; 2370 2371 if (priv->mode == NL80211_IFTYPE_AP) { 2372 /* TODO: check if changed channel, band */ 2373 if (priv->join_status != CW1200_JOIN_STATUS_AP || 2374 priv->beacon_int != conf->beacon_int) { 2375 pr_debug("ap restarting\n"); 2376 wsm_lock_tx(priv); 2377 if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE) 2378 wsm_reset(priv, &reset); 2379 priv->join_status = CW1200_JOIN_STATUS_PASSIVE; 2380 cw1200_start_ap(priv); 2381 wsm_unlock_tx(priv); 2382 } else 2383 pr_debug("ap started join_status: %d\n", 2384 priv->join_status); 2385 } 2386 return 0; 2387} 2388