1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Implementation of mac80211 API. 4 * 5 * Copyright (c) 2017-2020, Silicon Laboratories, Inc. 6 * Copyright (c) 2010, ST-Ericsson 7 */ 8#include <linux/etherdevice.h> 9#include <net/mac80211.h> 10 11#include "sta.h" 12#include "wfx.h" 13#include "fwio.h" 14#include "bh.h" 15#include "key.h" 16#include "scan.h" 17#include "debug.h" 18#include "hif_tx.h" 19#include "hif_tx_mib.h" 20 21#define HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES 2 22 23void wfx_cooling_timeout_work(struct work_struct *work) 24{ 25 struct wfx_dev *wdev = container_of(to_delayed_work(work), struct wfx_dev, 26 cooling_timeout_work); 27 28 wdev->chip_frozen = true; 29 wfx_tx_unlock(wdev); 30} 31 32void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd) 33{ 34 if (cmd == STA_NOTIFY_AWAKE) { 35 /* Device recover normal temperature */ 36 if (cancel_delayed_work(&wdev->cooling_timeout_work)) 37 wfx_tx_unlock(wdev); 38 } else { 39 /* Device is too hot */ 40 schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ); 41 wfx_tx_lock(wdev); 42 } 43} 44 45static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon) 46{ 47 static const struct wfx_hif_ie_table_entry filter_ies[] = { 48 { 49 .ie_id = WLAN_EID_VENDOR_SPECIFIC, 50 .has_changed = 1, 51 .no_longer = 1, 52 .has_appeared = 1, 53 .oui = { 0x50, 0x6F, 0x9A }, 54 }, { 55 .ie_id = WLAN_EID_HT_OPERATION, 56 .has_changed = 1, 57 .no_longer = 1, 58 .has_appeared = 1, 59 }, { 60 .ie_id = WLAN_EID_ERP_INFO, 61 .has_changed = 1, 62 .no_longer = 1, 63 .has_appeared = 1, 64 }, { 65 .ie_id = WLAN_EID_CHANNEL_SWITCH, 66 .has_changed = 1, 67 .no_longer = 1, 68 .has_appeared = 1, 69 } 70 }; 71 72 if (!filter_beacon) { 73 wfx_hif_beacon_filter_control(wvif, 0, 1); 74 } else { 75 wfx_hif_set_beacon_filter_table(wvif, ARRAY_SIZE(filter_ies), filter_ies); 76 wfx_hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0); 77 } 78} 79 80void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, 81 unsigned int *total_flags, u64 unused) 82{ 83 bool filter_bssid, filter_prbreq, filter_beacon; 84 struct ieee80211_vif *vif = NULL; 85 struct wfx_dev *wdev = hw->priv; 86 struct wfx_vif *wvif = NULL; 87 88 /* Notes: 89 * - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered 90 * - PS-Poll (FIF_PSPOLL) are never filtered 91 * - RTS, CTS and Ack (FIF_CONTROL) are always filtered 92 * - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered 93 * - Firmware does (yet) allow to forward unicast traffic sent to other stations (aka. 94 * promiscuous mode) 95 */ 96 *total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS | 97 FIF_PROBE_REQ | FIF_PSPOLL; 98 99 /* Filters are ignored during the scan. No frames are filtered. */ 100 if (mutex_is_locked(&wdev->scan_lock)) 101 return; 102 103 mutex_lock(&wdev->conf_mutex); 104 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { 105 /* Note: FIF_BCN_PRBRESP_PROMISC covers probe response and 106 * beacons from other BSS 107 */ 108 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) 109 filter_beacon = false; 110 else 111 filter_beacon = true; 112 wfx_filter_beacon(wvif, filter_beacon); 113 114 if (*total_flags & FIF_OTHER_BSS) 115 filter_bssid = false; 116 else 117 filter_bssid = true; 118 119 vif = wvif_to_vif(wvif); 120 /* In AP mode, chip can reply to probe request itself */ 121 if (*total_flags & FIF_PROBE_REQ && vif->type == NL80211_IFTYPE_AP) { 122 dev_dbg(wdev->dev, "do not forward probe request in AP mode\n"); 123 *total_flags &= ~FIF_PROBE_REQ; 124 } 125 126 if (*total_flags & FIF_PROBE_REQ) 127 filter_prbreq = false; 128 else 129 filter_prbreq = true; 130 wfx_hif_set_rx_filter(wvif, filter_bssid, filter_prbreq); 131 } 132 mutex_unlock(&wdev->conf_mutex); 133} 134 135static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps) 136{ 137 struct ieee80211_channel *chan0 = NULL, *chan1 = NULL; 138 struct ieee80211_conf *conf = &wvif->wdev->hw->conf; 139 struct ieee80211_vif *vif = wvif_to_vif(wvif); 140 141 WARN(!vif->cfg.assoc && enable_ps, 142 "enable_ps is reliable only if associated"); 143 if (wdev_to_wvif(wvif->wdev, 0)) { 144 struct wfx_vif *wvif_ch0 = wdev_to_wvif(wvif->wdev, 0); 145 struct ieee80211_vif *vif_ch0 = wvif_to_vif(wvif_ch0); 146 147 chan0 = vif_ch0->bss_conf.chanreq.oper.chan; 148 } 149 if (wdev_to_wvif(wvif->wdev, 1)) { 150 struct wfx_vif *wvif_ch1 = wdev_to_wvif(wvif->wdev, 1); 151 struct ieee80211_vif *vif_ch1 = wvif_to_vif(wvif_ch1); 152 153 chan1 = vif_ch1->bss_conf.chanreq.oper.chan; 154 } 155 if (chan0 && chan1 && vif->type != NL80211_IFTYPE_AP) { 156 if (chan0->hw_value == chan1->hw_value) { 157 /* It is useless to enable PS if channels are the same. */ 158 if (enable_ps) 159 *enable_ps = false; 160 if (vif->cfg.assoc && vif->cfg.ps) 161 dev_info(wvif->wdev->dev, "ignoring requested PS mode"); 162 return -1; 163 } 164 /* It is necessary to enable PS if channels are different. */ 165 if (enable_ps) 166 *enable_ps = true; 167 if (wfx_api_older_than(wvif->wdev, 3, 2)) 168 return 0; 169 else 170 return 30; 171 } 172 if (enable_ps) 173 *enable_ps = vif->cfg.ps; 174 if (vif->cfg.assoc && vif->cfg.ps) 175 return conf->dynamic_ps_timeout; 176 else 177 return -1; 178} 179 180int wfx_update_pm(struct wfx_vif *wvif) 181{ 182 struct ieee80211_vif *vif = wvif_to_vif(wvif); 183 int ps_timeout; 184 bool ps; 185 186 if (!vif->cfg.assoc) 187 return 0; 188 ps_timeout = wfx_get_ps_timeout(wvif, &ps); 189 if (!ps) 190 ps_timeout = 0; 191 WARN_ON(ps_timeout < 0); 192 if (wvif->uapsd_mask) 193 ps_timeout = 0; 194 195 if (!wait_for_completion_timeout(&wvif->set_pm_mode_complete, TU_TO_JIFFIES(512))) 196 dev_warn(wvif->wdev->dev, "timeout while waiting of set_pm_mode_complete\n"); 197 return wfx_hif_set_pm(wvif, ps, ps_timeout); 198} 199 200int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 201 unsigned int link_id, u16 queue, 202 const struct ieee80211_tx_queue_params *params) 203{ 204 struct wfx_dev *wdev = hw->priv; 205 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 206 int old_uapsd = wvif->uapsd_mask; 207 208 WARN_ON(queue >= hw->queues); 209 210 mutex_lock(&wdev->conf_mutex); 211 assign_bit(queue, &wvif->uapsd_mask, params->uapsd); 212 wfx_hif_set_edca_queue_params(wvif, queue, params); 213 if (vif->type == NL80211_IFTYPE_STATION && 214 old_uapsd != wvif->uapsd_mask) { 215 wfx_hif_set_uapsd_info(wvif, wvif->uapsd_mask); 216 wfx_update_pm(wvif); 217 } 218 mutex_unlock(&wdev->conf_mutex); 219 return 0; 220} 221 222int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 223{ 224 struct wfx_dev *wdev = hw->priv; 225 struct wfx_vif *wvif = NULL; 226 227 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) 228 wfx_hif_rts_threshold(wvif, value); 229 return 0; 230} 231 232void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi) 233{ 234 /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 235 * RSSI = RCPI / 2 - 110 236 */ 237 struct ieee80211_vif *vif = wvif_to_vif(wvif); 238 int rcpi_rssi; 239 int cqm_evt; 240 241 rcpi_rssi = raw_rcpi_rssi / 2 - 110; 242 if (rcpi_rssi <= vif->bss_conf.cqm_rssi_thold) 243 cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; 244 else 245 cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; 246 ieee80211_cqm_rssi_notify(vif, cqm_evt, rcpi_rssi, GFP_KERNEL); 247} 248 249static void wfx_beacon_loss_work(struct work_struct *work) 250{ 251 struct wfx_vif *wvif = container_of(to_delayed_work(work), struct wfx_vif, 252 beacon_loss_work); 253 struct ieee80211_vif *vif = wvif_to_vif(wvif); 254 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 255 256 ieee80211_beacon_loss(vif); 257 schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(bss_conf->beacon_int)); 258} 259 260void wfx_set_default_unicast_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int idx) 261{ 262 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 263 264 wfx_hif_wep_default_key_id(wvif, idx); 265} 266 267void wfx_reset(struct wfx_vif *wvif) 268{ 269 struct wfx_dev *wdev = wvif->wdev; 270 271 wfx_tx_lock_flush(wdev); 272 wfx_hif_reset(wvif, false); 273 wfx_tx_policy_init(wvif); 274 if (wvif_count(wdev) <= 1) 275 wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF); 276 wfx_tx_unlock(wdev); 277 wvif->join_in_progress = false; 278 cancel_delayed_work_sync(&wvif->beacon_loss_work); 279 wvif = NULL; 280 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) 281 wfx_update_pm(wvif); 282} 283 284int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) 285{ 286 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 287 struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv; 288 289 sta_priv->vif_id = wvif->id; 290 291 if (vif->type == NL80211_IFTYPE_STATION) 292 wfx_hif_set_mfp(wvif, sta->mfp, sta->mfp); 293 294 /* In station mode, the firmware interprets new link-id as a TDLS peer */ 295 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 296 return 0; 297 sta_priv->link_id = ffz(wvif->link_id_map); 298 wvif->link_id_map |= BIT(sta_priv->link_id); 299 WARN_ON(!sta_priv->link_id); 300 WARN_ON(sta_priv->link_id >= HIF_LINK_ID_MAX); 301 wfx_hif_map_link(wvif, false, sta->addr, sta_priv->link_id, sta->mfp); 302 303 return 0; 304} 305 306int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) 307{ 308 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 309 struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv; 310 311 /* See note in wfx_sta_add() */ 312 if (!sta_priv->link_id) 313 return 0; 314 /* FIXME add a mutex? */ 315 wfx_hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false); 316 wvif->link_id_map &= ~BIT(sta_priv->link_id); 317 return 0; 318} 319 320static int wfx_upload_ap_templates(struct wfx_vif *wvif) 321{ 322 struct ieee80211_vif *vif = wvif_to_vif(wvif); 323 struct sk_buff *skb; 324 325 skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0); 326 if (!skb) 327 return -ENOMEM; 328 wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_BCN, API_RATE_INDEX_B_1MBPS); 329 dev_kfree_skb(skb); 330 331 skb = ieee80211_proberesp_get(wvif->wdev->hw, vif); 332 if (!skb) 333 return -ENOMEM; 334 wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBRES, API_RATE_INDEX_B_1MBPS); 335 dev_kfree_skb(skb); 336 return 0; 337} 338 339static int wfx_set_mfp_ap(struct wfx_vif *wvif) 340{ 341 struct ieee80211_vif *vif = wvif_to_vif(wvif); 342 struct sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0); 343 const int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable); 344 const int pairwise_cipher_suite_count_offset = 8 / sizeof(u16); 345 const int pairwise_cipher_suite_size = 4 / sizeof(u16); 346 const int akm_suite_size = 4 / sizeof(u16); 347 int ret = -EINVAL; 348 const u16 *ptr; 349 350 if (unlikely(!skb)) 351 return -ENOMEM; 352 353 ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN, skb->data + ieoffset, 354 skb->len - ieoffset); 355 if (unlikely(!ptr)) 356 goto free_skb; 357 358 ptr += pairwise_cipher_suite_count_offset; 359 if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb))) 360 goto free_skb; 361 362 ptr += 1 + pairwise_cipher_suite_size * *ptr; 363 if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb))) 364 goto free_skb; 365 366 ptr += 1 + akm_suite_size * *ptr; 367 if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb))) 368 goto free_skb; 369 370 wfx_hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6)); 371 ret = 0; 372 373free_skb: 374 dev_kfree_skb(skb); 375 return ret; 376} 377 378int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 379 struct ieee80211_bss_conf *link_conf) 380{ 381 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 382 struct wfx_dev *wdev = wvif->wdev; 383 int ret; 384 385 wvif = NULL; 386 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) 387 wfx_update_pm(wvif); 388 wvif = (struct wfx_vif *)vif->drv_priv; 389 wfx_upload_ap_templates(wvif); 390 ret = wfx_hif_start(wvif, &vif->bss_conf, wvif->channel); 391 if (ret > 0) 392 return -EIO; 393 return wfx_set_mfp_ap(wvif); 394} 395 396void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 397 struct ieee80211_bss_conf *link_conf) 398{ 399 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 400 struct wfx_dev *wdev = wvif->wdev; 401 402 wvif = NULL; 403 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) 404 wfx_update_pm(wvif); 405 wvif = (struct wfx_vif *)vif->drv_priv; 406 wfx_reset(wvif); 407} 408 409static void wfx_join(struct wfx_vif *wvif) 410{ 411 struct ieee80211_vif *vif = wvif_to_vif(wvif); 412 struct ieee80211_bss_conf *conf = &vif->bss_conf; 413 struct cfg80211_bss *bss = NULL; 414 u8 ssid[IEEE80211_MAX_SSID_LEN]; 415 const u8 *ssid_ie = NULL; 416 int ssid_len = 0; 417 int ret; 418 419 wfx_tx_lock_flush(wvif->wdev); 420 421 bss = cfg80211_get_bss(wvif->wdev->hw->wiphy, wvif->channel, conf->bssid, NULL, 0, 422 IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY); 423 if (!bss && !vif->cfg.ibss_joined) { 424 wfx_tx_unlock(wvif->wdev); 425 return; 426 } 427 428 rcu_read_lock(); /* protect ssid_ie */ 429 if (bss) 430 ssid_ie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); 431 if (ssid_ie) { 432 ssid_len = ssid_ie[1]; 433 if (ssid_len > IEEE80211_MAX_SSID_LEN) 434 ssid_len = IEEE80211_MAX_SSID_LEN; 435 memcpy(ssid, &ssid_ie[2], ssid_len); 436 } 437 rcu_read_unlock(); 438 439 cfg80211_put_bss(wvif->wdev->hw->wiphy, bss); 440 441 wvif->join_in_progress = true; 442 ret = wfx_hif_join(wvif, conf, wvif->channel, ssid, ssid_len); 443 if (ret) { 444 ieee80211_connection_loss(vif); 445 wfx_reset(wvif); 446 } else { 447 /* Due to beacon filtering it is possible that the AP's beacon is not known for the 448 * mac80211 stack. Disable filtering temporary to make sure the stack receives at 449 * least one 450 */ 451 wfx_filter_beacon(wvif, false); 452 } 453 wfx_tx_unlock(wvif->wdev); 454} 455 456static void wfx_join_finalize(struct wfx_vif *wvif, struct ieee80211_bss_conf *info) 457{ 458 struct ieee80211_vif *vif = wvif_to_vif(wvif); 459 struct ieee80211_sta *sta = NULL; 460 int ampdu_density = 0; 461 bool greenfield = false; 462 463 rcu_read_lock(); /* protect sta */ 464 if (info->bssid && !vif->cfg.ibss_joined) 465 sta = ieee80211_find_sta(vif, info->bssid); 466 if (sta && sta->deflink.ht_cap.ht_supported) 467 ampdu_density = sta->deflink.ht_cap.ampdu_density; 468 if (sta && sta->deflink.ht_cap.ht_supported && 469 !(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)) 470 greenfield = !!(sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD); 471 rcu_read_unlock(); 472 473 wvif->join_in_progress = false; 474 wfx_hif_set_association_mode(wvif, ampdu_density, greenfield, info->use_short_preamble); 475 wfx_hif_keep_alive_period(wvif, 0); 476 /* beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use the same value. */ 477 wfx_hif_set_bss_params(wvif, vif->cfg.aid, 7); 478 wfx_hif_set_beacon_wakeup_period(wvif, 1, 1); 479 wfx_update_pm(wvif); 480} 481 482int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 483{ 484 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 485 486 wfx_upload_ap_templates(wvif); 487 wfx_join(wvif); 488 return 0; 489} 490 491void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 492{ 493 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 494 495 wfx_reset(wvif); 496} 497 498static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable) 499{ 500 /* Driver has Content After DTIM Beacon in queue. Driver is waiting for a signal from the 501 * firmware. Since we are going to stop to send beacons, this signal will never happens. See 502 * also wfx_suspend_resume_mc() 503 */ 504 if (!enable && wfx_tx_queues_has_cab(wvif)) { 505 wvif->after_dtim_tx_allowed = true; 506 wfx_bh_request_tx(wvif->wdev); 507 } 508 wfx_hif_beacon_transmit(wvif, enable); 509} 510 511void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 512 struct ieee80211_bss_conf *info, u64 changed) 513{ 514 struct wfx_dev *wdev = hw->priv; 515 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 516 int i; 517 518 mutex_lock(&wdev->conf_mutex); 519 520 if (changed & BSS_CHANGED_BASIC_RATES || 521 changed & BSS_CHANGED_BEACON_INT || 522 changed & BSS_CHANGED_BSSID) { 523 if (vif->type == NL80211_IFTYPE_STATION) 524 wfx_join(wvif); 525 } 526 527 if (changed & BSS_CHANGED_ASSOC) { 528 if (vif->cfg.assoc || vif->cfg.ibss_joined) 529 wfx_join_finalize(wvif, info); 530 else if (!vif->cfg.assoc && vif->type == NL80211_IFTYPE_STATION) 531 wfx_reset(wvif); 532 else 533 dev_warn(wdev->dev, "misunderstood change: ASSOC\n"); 534 } 535 536 if (changed & BSS_CHANGED_BEACON_INFO) { 537 if (vif->type != NL80211_IFTYPE_STATION) 538 dev_warn(wdev->dev, "misunderstood change: BEACON_INFO\n"); 539 wfx_hif_set_beacon_wakeup_period(wvif, info->dtim_period, info->dtim_period); 540 /* We temporary forwarded beacon for join process. It is now no more necessary. */ 541 wfx_filter_beacon(wvif, true); 542 } 543 544 if (changed & BSS_CHANGED_ARP_FILTER) { 545 for (i = 0; i < HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES; i++) { 546 __be32 *arp_addr = &vif->cfg.arp_addr_list[i]; 547 548 if (vif->cfg.arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES) 549 arp_addr = NULL; 550 if (i >= vif->cfg.arp_addr_cnt) 551 arp_addr = NULL; 552 wfx_hif_set_arp_ipv4_filter(wvif, i, arp_addr); 553 } 554 } 555 556 if (changed & BSS_CHANGED_AP_PROBE_RESP || changed & BSS_CHANGED_BEACON) 557 wfx_upload_ap_templates(wvif); 558 559 if (changed & BSS_CHANGED_BEACON_ENABLED) 560 wfx_enable_beacon(wvif, info->enable_beacon); 561 562 if (changed & BSS_CHANGED_KEEP_ALIVE) 563 wfx_hif_keep_alive_period(wvif, 564 info->max_idle_period * USEC_PER_TU / USEC_PER_MSEC); 565 566 if (changed & BSS_CHANGED_ERP_CTS_PROT) 567 wfx_hif_erp_use_protection(wvif, info->use_cts_prot); 568 569 if (changed & BSS_CHANGED_ERP_SLOT) 570 wfx_hif_slot_time(wvif, info->use_short_slot ? 9 : 20); 571 572 if (changed & BSS_CHANGED_CQM) 573 wfx_hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold, info->cqm_rssi_hyst); 574 575 if (changed & BSS_CHANGED_TXPOWER) 576 wfx_hif_set_output_power(wvif, info->txpower); 577 578 if (changed & BSS_CHANGED_PS) 579 wfx_update_pm(wvif); 580 581 mutex_unlock(&wdev->conf_mutex); 582} 583 584static int wfx_update_tim(struct wfx_vif *wvif) 585{ 586 struct ieee80211_vif *vif = wvif_to_vif(wvif); 587 struct sk_buff *skb; 588 u16 tim_offset, tim_length; 589 u8 *tim_ptr; 590 591 skb = ieee80211_beacon_get_tim(wvif->wdev->hw, vif, &tim_offset, 592 &tim_length, 0); 593 if (!skb) 594 return -ENOENT; 595 tim_ptr = skb->data + tim_offset; 596 597 if (tim_offset && tim_length >= 6) { 598 /* Firmware handles DTIM counter internally */ 599 tim_ptr[2] = 0; 600 601 /* Set/reset aid0 bit */ 602 if (wfx_tx_queues_has_cab(wvif)) 603 tim_ptr[4] |= 1; 604 else 605 tim_ptr[4] &= ~1; 606 } 607 608 wfx_hif_update_ie_beacon(wvif, tim_ptr, tim_length); 609 dev_kfree_skb(skb); 610 611 return 0; 612} 613 614static void wfx_update_tim_work(struct work_struct *work) 615{ 616 struct wfx_vif *wvif = container_of(work, struct wfx_vif, update_tim_work); 617 618 wfx_update_tim(wvif); 619} 620 621int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) 622{ 623 struct wfx_dev *wdev = hw->priv; 624 struct wfx_sta_priv *sta_dev = (struct wfx_sta_priv *)&sta->drv_priv; 625 struct wfx_vif *wvif = wdev_to_wvif(wdev, sta_dev->vif_id); 626 627 if (!wvif) { 628 dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); 629 return -EIO; 630 } 631 schedule_work(&wvif->update_tim_work); 632 return 0; 633} 634 635void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd) 636{ 637 if (notify_cmd != STA_NOTIFY_AWAKE) 638 return; 639 640 /* Device won't be able to honor CAB if a scan is in progress on any interface. Prefer to 641 * skip this DTIM and wait for the next one. 642 */ 643 if (mutex_is_locked(&wvif->wdev->scan_lock)) 644 return; 645 646 if (!wfx_tx_queues_has_cab(wvif) || wvif->after_dtim_tx_allowed) 647 dev_warn(wvif->wdev->dev, "incorrect sequence (%d CAB in queue)", 648 wfx_tx_queues_has_cab(wvif)); 649 wvif->after_dtim_tx_allowed = true; 650 wfx_bh_request_tx(wvif->wdev); 651} 652 653int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 654 struct ieee80211_ampdu_params *params) 655{ 656 /* Aggregation is implemented fully in firmware */ 657 switch (params->action) { 658 case IEEE80211_AMPDU_RX_START: 659 case IEEE80211_AMPDU_RX_STOP: 660 /* Just acknowledge it to enable frame re-ordering */ 661 return 0; 662 default: 663 /* Leave the firmware doing its business for tx aggregation */ 664 return -EOPNOTSUPP; 665 } 666} 667 668int wfx_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf) 669{ 670 return 0; 671} 672 673void wfx_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf) 674{ 675} 676 677void wfx_change_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf, u32 changed) 678{ 679} 680 681int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 682 struct ieee80211_bss_conf *link_conf, 683 struct ieee80211_chanctx_conf *conf) 684{ 685 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 686 struct ieee80211_channel *ch = conf->def.chan; 687 688 WARN(wvif->channel, "channel overwrite"); 689 wvif->channel = ch; 690 691 return 0; 692} 693 694void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 695 struct ieee80211_bss_conf *link_conf, 696 struct ieee80211_chanctx_conf *conf) 697{ 698 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 699 struct ieee80211_channel *ch = conf->def.chan; 700 701 WARN(wvif->channel != ch, "channel mismatch"); 702 wvif->channel = NULL; 703} 704 705int wfx_config(struct ieee80211_hw *hw, u32 changed) 706{ 707 return 0; 708} 709 710int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 711{ 712 int i; 713 struct wfx_dev *wdev = hw->priv; 714 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 715 716 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 717 IEEE80211_VIF_SUPPORTS_UAPSD | 718 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 719 720 mutex_lock(&wdev->conf_mutex); 721 722 switch (vif->type) { 723 case NL80211_IFTYPE_STATION: 724 case NL80211_IFTYPE_ADHOC: 725 case NL80211_IFTYPE_AP: 726 break; 727 default: 728 mutex_unlock(&wdev->conf_mutex); 729 return -EOPNOTSUPP; 730 } 731 732 wvif->wdev = wdev; 733 734 wvif->link_id_map = 1; /* link-id 0 is reserved for multicast */ 735 INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work); 736 INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work); 737 738 init_completion(&wvif->set_pm_mode_complete); 739 complete(&wvif->set_pm_mode_complete); 740 INIT_WORK(&wvif->tx_policy_upload_work, wfx_tx_policy_upload_work); 741 742 init_completion(&wvif->scan_complete); 743 INIT_WORK(&wvif->scan_work, wfx_hw_scan_work); 744 INIT_WORK(&wvif->remain_on_channel_work, wfx_remain_on_channel_work); 745 746 wfx_tx_queues_init(wvif); 747 wfx_tx_policy_init(wvif); 748 749 for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) { 750 if (!wdev->vif[i]) { 751 wdev->vif[i] = vif; 752 wvif->id = i; 753 break; 754 } 755 } 756 WARN(i == ARRAY_SIZE(wdev->vif), "try to instantiate more vif than supported"); 757 758 wfx_hif_set_macaddr(wvif, vif->addr); 759 760 mutex_unlock(&wdev->conf_mutex); 761 762 wvif = NULL; 763 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { 764 /* Combo mode does not support Block Acks. We can re-enable them */ 765 if (wvif_count(wdev) == 1) 766 wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF); 767 else 768 wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00); 769 } 770 return 0; 771} 772 773void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 774{ 775 struct wfx_dev *wdev = hw->priv; 776 struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; 777 778 wait_for_completion_timeout(&wvif->set_pm_mode_complete, msecs_to_jiffies(300)); 779 wfx_tx_queues_check_empty(wvif); 780 781 mutex_lock(&wdev->conf_mutex); 782 WARN(wvif->link_id_map != 1, "corrupted state"); 783 784 wfx_hif_reset(wvif, false); 785 wfx_hif_set_macaddr(wvif, NULL); 786 wfx_tx_policy_init(wvif); 787 788 cancel_delayed_work_sync(&wvif->beacon_loss_work); 789 wdev->vif[wvif->id] = NULL; 790 791 mutex_unlock(&wdev->conf_mutex); 792 793 wvif = NULL; 794 while ((wvif = wvif_iterate(wdev, wvif)) != NULL) { 795 /* Combo mode does not support Block Acks. We can re-enable them */ 796 if (wvif_count(wdev) == 1) 797 wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF); 798 else 799 wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00); 800 } 801} 802 803int wfx_start(struct ieee80211_hw *hw) 804{ 805 return 0; 806} 807 808void wfx_stop(struct ieee80211_hw *hw) 809{ 810 struct wfx_dev *wdev = hw->priv; 811 812 WARN_ON(!skb_queue_empty_lockless(&wdev->tx_pending)); 813} 814