1 /* 2 * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /** 20 * DOC: defines driver functions interfacing with linux kernel 21 */ 22 23 #include <qdf_list.h> 24 #include <qdf_status.h> 25 #include <linux/wireless.h> 26 #include <linux/netdevice.h> 27 #include <net/cfg80211.h> 28 #include <wlan_scan_utils_api.h> 29 #include <wlan_cfg80211.h> 30 #include <wlan_cfg80211_scan.h> 31 #include <wlan_osif_priv.h> 32 #include <wlan_scan_public_structs.h> 33 #include <wlan_scan_ucfg_api.h> 34 #include <wlan_cfg80211_scan.h> 35 #include <qdf_mem.h> 36 #include <wlan_utility.h> 37 #include "cfg_ucfg_api.h" 38 #ifdef WLAN_POLICY_MGR_ENABLE 39 #include <wlan_policy_mgr_api.h> 40 #endif 41 #include <wlan_reg_services_api.h> 42 #ifdef FEATURE_WLAN_DIAG_SUPPORT 43 #include "host_diag_core_event.h" 44 #endif 45 46 static const 47 struct nla_policy scan_policy[QCA_WLAN_VENDOR_ATTR_SCAN_MAX + 1] = { 48 [QCA_WLAN_VENDOR_ATTR_SCAN_FLAGS] = {.type = NLA_U32}, 49 [QCA_WLAN_VENDOR_ATTR_SCAN_TX_NO_CCK_RATE] = {.type = NLA_FLAG}, 50 [QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE] = {.type = NLA_U64}, 51 }; 52 53 #if defined(CFG80211_SCAN_RANDOM_MAC_ADDR) || \ 54 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) 55 /** 56 * wlan_fill_scan_rand_attrs() - Populate the scan randomization attrs 57 * @vdev: pointer to objmgr vdev 58 * @flags: cfg80211 scan flags 59 * @mac_addr: random mac addr from cfg80211 60 * @mac_addr_mask: mac addr mask from cfg80211 61 * @randomize: output variable to check scan randomization status 62 * @addr: output variable to hold random addr 63 * @mask: output variable to hold mac mask 64 * 65 * Return: None 66 */ 67 static void wlan_fill_scan_rand_attrs(struct wlan_objmgr_vdev *vdev, 68 uint32_t flags, 69 uint8_t *mac_addr, 70 uint8_t *mac_addr_mask, 71 bool *randomize, 72 uint8_t *addr, 73 uint8_t *mask) 74 { 75 *randomize = false; 76 if (!(flags & NL80211_SCAN_FLAG_RANDOM_ADDR)) 77 return; 78 79 if (wlan_vdev_mlme_get_opmode(vdev) != QDF_STA_MODE) 80 return; 81 82 if (wlan_vdev_is_connected(vdev)) 83 return; 84 85 *randomize = true; 86 memcpy(addr, mac_addr, QDF_MAC_ADDR_SIZE); 87 memcpy(mask, mac_addr_mask, QDF_MAC_ADDR_SIZE); 88 cfg80211_debug("Random mac addr: %pM and Random mac mask: %pM", 89 addr, mask); 90 } 91 92 /** 93 * wlan_scan_rand_attrs() - Wrapper function to fill scan random attrs 94 * @vdev: pointer to objmgr vdev 95 * @request: pointer to cfg80211 scan request 96 * @req: pointer to cmn module scan request 97 * 98 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 99 * to fill random attributes of internal scan request with cfg80211_scan_request 100 * 101 * Return: None 102 */ 103 static void wlan_scan_rand_attrs(struct wlan_objmgr_vdev *vdev, 104 struct cfg80211_scan_request *request, 105 struct scan_start_request *req) 106 { 107 bool *randomize = &req->scan_req.scan_random.randomize; 108 uint8_t *mac_addr = req->scan_req.scan_random.mac_addr; 109 uint8_t *mac_mask = req->scan_req.scan_random.mac_mask; 110 111 wlan_fill_scan_rand_attrs(vdev, request->flags, request->mac_addr, 112 request->mac_addr_mask, randomize, mac_addr, 113 mac_mask); 114 if (!*randomize) 115 return; 116 117 req->scan_req.scan_f_add_spoofed_mac_in_probe = true; 118 req->scan_req.scan_f_add_rand_seq_in_probe = true; 119 } 120 #else 121 /** 122 * wlan_scan_rand_attrs() - Wrapper function to fill scan random attrs 123 * @vdev: pointer to objmgr vdev 124 * @request: pointer to cfg80211 scan request 125 * @req: pointer to cmn module scan request 126 * 127 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 128 * to fill random attributes of internal scan request with cfg80211_scan_request 129 * 130 * Return: None 131 */ 132 static void wlan_scan_rand_attrs(struct wlan_objmgr_vdev *vdev, 133 struct cfg80211_scan_request *request, 134 struct scan_start_request *req) 135 { 136 } 137 #endif 138 139 #ifdef FEATURE_WLAN_SCAN_PNO 140 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) || \ 141 defined(CFG80211_MULTI_SCAN_PLAN_BACKPORT)) 142 143 /** 144 * wlan_config_sched_scan_plan() - configures the sched scan plans 145 * from the framework. 146 * @pno_req: pointer to PNO scan request 147 * @request: pointer to scan request from framework 148 * 149 * Return: None 150 */ 151 static void 152 wlan_config_sched_scan_plan(struct pno_scan_req_params *pno_req, 153 struct cfg80211_sched_scan_request *request) 154 { 155 /* 156 * As of now max 2 scan plans were supported by firmware 157 * if number of scan plan supported by firmware increased below logic 158 * must change. 159 */ 160 if (request->n_scan_plans == SCAN_PNO_MAX_PLAN_REQUEST) { 161 pno_req->fast_scan_period = 162 request->scan_plans[0].interval * MSEC_PER_SEC; 163 pno_req->fast_scan_max_cycles = 164 request->scan_plans[0].iterations; 165 pno_req->slow_scan_period = 166 request->scan_plans[1].interval * MSEC_PER_SEC; 167 } else if (request->n_scan_plans == 1) { 168 pno_req->fast_scan_period = 169 request->scan_plans[0].interval * MSEC_PER_SEC; 170 /* 171 * if only one scan plan is configured from framework 172 * then both fast and slow scan should be configured with the 173 * same value that is why fast scan cycles are hardcoded to one 174 */ 175 pno_req->fast_scan_max_cycles = 1; 176 pno_req->slow_scan_period = 177 request->scan_plans[0].interval * MSEC_PER_SEC; 178 } else { 179 cfg80211_err("Invalid number of scan plans %d !!", 180 request->n_scan_plans); 181 } 182 } 183 #else 184 #define wlan_config_sched_scan_plan(pno_req, request) \ 185 __wlan_config_sched_scan_plan(pno_req, request, psoc) 186 187 static void 188 __wlan_config_sched_scan_plan(struct pno_scan_req_params *pno_req, 189 struct cfg80211_sched_scan_request *request, 190 struct wlan_objmgr_psoc *psoc) 191 { 192 uint32_t scan_timer_repeat_value, slow_scan_multiplier; 193 194 scan_timer_repeat_value = ucfg_scan_get_scan_timer_repeat_value(psoc); 195 slow_scan_multiplier = ucfg_scan_get_slow_scan_multiplier(psoc); 196 197 pno_req->fast_scan_period = request->interval; 198 pno_req->fast_scan_max_cycles = scan_timer_repeat_value; 199 pno_req->slow_scan_period = 200 (slow_scan_multiplier * pno_req->fast_scan_period); 201 cfg80211_debug("Base scan interval: %d sec PNO Scan Timer Repeat Value: %d", 202 (request->interval / 1000), scan_timer_repeat_value); 203 } 204 #endif 205 206 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0) 207 static inline void 208 wlan_cfg80211_sched_scan_results(struct wiphy *wiphy, uint64_t reqid) 209 { 210 cfg80211_sched_scan_results(wiphy); 211 } 212 #else 213 static inline void 214 wlan_cfg80211_sched_scan_results(struct wiphy *wiphy, uint64_t reqid) 215 { 216 cfg80211_sched_scan_results(wiphy, reqid); 217 } 218 #endif 219 220 /** 221 * wlan_cfg80211_pno_callback() - pno callback function to handle 222 * pno events. 223 * @vdev: vdev ptr 224 * @event: scan events 225 * @args: argument 226 * 227 * Return: void 228 */ 229 static void wlan_cfg80211_pno_callback(struct wlan_objmgr_vdev *vdev, 230 struct scan_event *event, 231 void *args) 232 { 233 struct wlan_objmgr_pdev *pdev; 234 struct pdev_osif_priv *pdev_ospriv; 235 236 if (event->type != SCAN_EVENT_TYPE_NLO_COMPLETE) 237 return; 238 239 cfg80211_debug("vdev id = %d", event->vdev_id); 240 241 pdev = wlan_vdev_get_pdev(vdev); 242 if (!pdev) { 243 cfg80211_err("pdev is NULL"); 244 return; 245 } 246 247 pdev_ospriv = wlan_pdev_get_ospriv(pdev); 248 if (!pdev_ospriv) { 249 cfg80211_err("pdev_ospriv is NULL"); 250 return; 251 } 252 wlan_cfg80211_sched_scan_results(pdev_ospriv->wiphy, 0); 253 } 254 255 #ifdef WLAN_POLICY_MGR_ENABLE 256 static bool wlan_cfg80211_is_ap_go_present(struct wlan_objmgr_psoc *psoc) 257 { 258 return policy_mgr_mode_specific_connection_count(psoc, 259 PM_SAP_MODE, 260 NULL) || 261 policy_mgr_mode_specific_connection_count(psoc, 262 PM_P2P_GO_MODE, 263 NULL); 264 } 265 266 static QDF_STATUS wlan_cfg80211_is_chan_ok_for_dnbs( 267 struct wlan_objmgr_psoc *psoc, 268 u8 channel, bool *ok) 269 { 270 QDF_STATUS status = policy_mgr_is_chan_ok_for_dnbs(psoc, channel, ok); 271 272 if (QDF_IS_STATUS_ERROR(status)) { 273 cfg80211_err("DNBS check failed"); 274 return status; 275 } 276 277 return QDF_STATUS_SUCCESS; 278 } 279 #else 280 static bool wlan_cfg80211_is_ap_go_present(struct wlan_objmgr_psoc *psoc) 281 { 282 return false; 283 } 284 285 static QDF_STATUS wlan_cfg80211_is_chan_ok_for_dnbs( 286 struct wlan_objmgr_psoc *psoc, 287 u8 channel, 288 bool *ok) 289 { 290 if (!ok) 291 return QDF_STATUS_E_INVAL; 292 293 *ok = true; 294 return QDF_STATUS_SUCCESS; 295 } 296 #endif 297 298 #if defined(CFG80211_SCAN_RANDOM_MAC_ADDR) || \ 299 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) 300 /** 301 * wlan_pno_scan_rand_attr() - Wrapper function to fill sched scan random attrs 302 * @vdev: pointer to objmgr vdev 303 * @request: pointer to cfg80211 sched scan request 304 * @req: pointer to cmn module pno scan request 305 * 306 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 307 * to fill random attributes of internal pno scan 308 * with cfg80211_sched_scan_request 309 * 310 * Return: None 311 */ 312 static void wlan_pno_scan_rand_attr(struct wlan_objmgr_vdev *vdev, 313 struct cfg80211_sched_scan_request *request, 314 struct pno_scan_req_params *req) 315 { 316 bool *randomize = &req->scan_random.randomize; 317 uint8_t *mac_addr = req->scan_random.mac_addr; 318 uint8_t *mac_mask = req->scan_random.mac_mask; 319 320 wlan_fill_scan_rand_attrs(vdev, request->flags, request->mac_addr, 321 request->mac_addr_mask, randomize, mac_addr, 322 mac_mask); 323 } 324 #else 325 /** 326 * wlan_pno_scan_rand_attr() - Wrapper function to fill sched scan random attrs 327 * @vdev: pointer to objmgr vdev 328 * @request: pointer to cfg80211 sched scan request 329 * @req: pointer to cmn module pno scan request 330 * 331 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 332 * to fill random attributes of internal pno scan 333 * with cfg80211_sched_scan_request 334 * 335 * Return: None 336 */ 337 static void wlan_pno_scan_rand_attr(struct wlan_objmgr_vdev *vdev, 338 struct cfg80211_sched_scan_request *request, 339 struct pno_scan_req_params *req) 340 { 341 } 342 #endif 343 344 /** 345 * wlan_hdd_sched_scan_update_relative_rssi() - update CPNO params 346 * @pno_request: pointer to PNO scan request 347 * @request: Pointer to cfg80211 scheduled scan start request 348 * 349 * This function is used to update Connected PNO params sent by kernel 350 * 351 * Return: None 352 */ 353 #if defined(CFG80211_REPORT_BETTER_BSS_IN_SCHED_SCAN) || \ 354 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)) 355 static inline void wlan_hdd_sched_scan_update_relative_rssi( 356 struct pno_scan_req_params *pno_request, 357 struct cfg80211_sched_scan_request *request) 358 { 359 pno_request->relative_rssi_set = request->relative_rssi_set; 360 pno_request->relative_rssi = request->relative_rssi; 361 if (NL80211_BAND_2GHZ == request->rssi_adjust.band) 362 pno_request->band_rssi_pref.band = WLAN_BAND_2_4_GHZ; 363 else if (NL80211_BAND_5GHZ == request->rssi_adjust.band) 364 pno_request->band_rssi_pref.band = WLAN_BAND_5_GHZ; 365 pno_request->band_rssi_pref.rssi = request->rssi_adjust.delta; 366 } 367 #else 368 static inline void wlan_hdd_sched_scan_update_relative_rssi( 369 struct pno_scan_req_params *pno_request, 370 struct cfg80211_sched_scan_request *request) 371 { 372 } 373 #endif 374 375 #ifdef FEATURE_WLAN_SCAN_PNO 376 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) 377 static uint32_t wlan_config_sched_scan_start_delay( 378 struct cfg80211_sched_scan_request *request) 379 { 380 return request->delay; 381 } 382 #else 383 static uint32_t wlan_config_sched_scan_start_delay( 384 struct cfg80211_sched_scan_request *request) 385 { 386 return 0; 387 } 388 #endif /*(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) */ 389 #endif /* FEATURE_WLAN_SCAN_PNO */ 390 391 int wlan_cfg80211_sched_scan_start(struct wlan_objmgr_vdev *vdev, 392 struct cfg80211_sched_scan_request *request, 393 uint8_t scan_backoff_multiplier) 394 { 395 struct pno_scan_req_params *req; 396 int i, j, ret = 0; 397 QDF_STATUS status; 398 uint8_t num_chan = 0, channel; 399 struct wlan_objmgr_pdev *pdev = wlan_vdev_get_pdev(vdev); 400 struct wlan_objmgr_psoc *psoc; 401 uint32_t valid_ch[SCAN_PNO_MAX_NETW_CHANNELS_EX] = {0}; 402 bool enable_dfs_pno_chnl_scan; 403 404 if (ucfg_scan_get_pno_in_progress(vdev)) { 405 cfg80211_debug("pno is already in progress"); 406 return -EBUSY; 407 } 408 409 if (ucfg_scan_get_pdev_status(pdev) != 410 SCAN_NOT_IN_PROGRESS) { 411 status = wlan_abort_scan(pdev, 412 wlan_objmgr_pdev_get_pdev_id(pdev), 413 INVAL_VDEV_ID, INVAL_SCAN_ID, true); 414 if (QDF_IS_STATUS_ERROR(status)) { 415 cfg80211_err("aborting the existing scan is unsuccessful"); 416 return -EBUSY; 417 } 418 } 419 420 req = qdf_mem_malloc(sizeof(*req)); 421 if (!req) { 422 cfg80211_err("req malloc failed"); 423 return -ENOMEM; 424 } 425 426 wlan_pdev_obj_lock(pdev); 427 psoc = wlan_pdev_get_psoc(pdev); 428 wlan_pdev_obj_unlock(pdev); 429 430 req->networks_cnt = request->n_match_sets; 431 req->vdev_id = wlan_vdev_get_id(vdev); 432 433 if ((!req->networks_cnt) || 434 (req->networks_cnt > SCAN_PNO_MAX_SUPP_NETWORKS)) { 435 cfg80211_err("Network input is not correct %d", 436 req->networks_cnt); 437 ret = -EINVAL; 438 goto error; 439 } 440 441 if (request->n_channels > SCAN_PNO_MAX_NETW_CHANNELS_EX) { 442 cfg80211_err("Incorrect number of channels %d", 443 request->n_channels); 444 ret = -EINVAL; 445 goto error; 446 } 447 448 enable_dfs_pno_chnl_scan = ucfg_scan_is_dfs_chnl_scan_enabled(psoc); 449 if (request->n_channels) { 450 char *chl = qdf_mem_malloc((request->n_channels * 5) + 1); 451 int len = 0; 452 bool ap_or_go_present = wlan_cfg80211_is_ap_go_present(psoc); 453 454 if (!chl) { 455 ret = -ENOMEM; 456 goto error; 457 } 458 for (i = 0; i < request->n_channels; i++) { 459 channel = request->channels[i]->hw_value; 460 if ((!enable_dfs_pno_chnl_scan) && 461 (wlan_reg_is_dfs_ch(pdev, channel))) { 462 cfg80211_debug("Dropping DFS channel :%d", 463 channel); 464 continue; 465 } 466 if (wlan_reg_is_dsrc_chan(pdev, channel)) 467 continue; 468 469 if (ap_or_go_present) { 470 bool ok; 471 472 status = 473 wlan_cfg80211_is_chan_ok_for_dnbs(psoc, 474 channel, 475 &ok); 476 if (QDF_IS_STATUS_ERROR(status)) { 477 cfg80211_err("DNBS check failed"); 478 qdf_mem_free(chl); 479 chl = NULL; 480 ret = -EINVAL; 481 goto error; 482 } 483 if (!ok) 484 continue; 485 } 486 len += snprintf(chl + len, 5, "%d ", channel); 487 valid_ch[num_chan++] = wlan_chan_to_freq(channel); 488 } 489 cfg80211_notice("No. of Scan Channels: %d", num_chan); 490 cfg80211_notice("Channel-List: %s", chl); 491 qdf_mem_free(chl); 492 chl = NULL; 493 /* If all channels are DFS and dropped, 494 * then ignore the PNO request 495 */ 496 if (!num_chan) { 497 cfg80211_notice("Channel list empty due to filtering of DSRC"); 498 ret = -EINVAL; 499 goto error; 500 } 501 } 502 503 /* Filling per profile params */ 504 for (i = 0; i < req->networks_cnt; i++) { 505 req->networks_list[i].ssid.length = 506 request->match_sets[i].ssid.ssid_len; 507 508 if ((!req->networks_list[i].ssid.length) || 509 (req->networks_list[i].ssid.length > WLAN_SSID_MAX_LEN)) { 510 cfg80211_err(" SSID Len %d is not correct for network %d", 511 req->networks_list[i].ssid.length, i); 512 ret = -EINVAL; 513 goto error; 514 } 515 516 qdf_mem_copy(req->networks_list[i].ssid.ssid, 517 request->match_sets[i].ssid.ssid, 518 req->networks_list[i].ssid.length); 519 req->networks_list[i].authentication = 0; /*eAUTH_TYPE_ANY */ 520 req->networks_list[i].encryption = 0; /*eED_ANY */ 521 req->networks_list[i].bc_new_type = 0; /*eBCAST_UNKNOWN */ 522 523 cfg80211_notice("Received ssid:%.*s", 524 req->networks_list[i].ssid.length, 525 req->networks_list[i].ssid.ssid); 526 527 /*Copying list of valid channel into request */ 528 qdf_mem_copy(req->networks_list[i].channels, valid_ch, 529 num_chan * sizeof(uint32_t)); 530 req->networks_list[i].channel_cnt = num_chan; 531 req->networks_list[i].rssi_thresh = 532 request->match_sets[i].rssi_thold; 533 } 534 535 /* set scan to passive if no SSIDs are specified in the request */ 536 if (0 == request->n_ssids) 537 req->do_passive_scan = true; 538 else 539 req->do_passive_scan = false; 540 541 for (i = 0; i < request->n_ssids; i++) { 542 j = 0; 543 while (j < req->networks_cnt) { 544 if ((req->networks_list[j].ssid.length == 545 request->ssids[i].ssid_len) && 546 (!qdf_mem_cmp(req->networks_list[j].ssid.ssid, 547 request->ssids[i].ssid, 548 req->networks_list[j].ssid.length))) { 549 req->networks_list[j].bc_new_type = 550 SSID_BC_TYPE_HIDDEN; 551 break; 552 } 553 j++; 554 } 555 } 556 cfg80211_notice("Number of hidden networks being Configured = %d", 557 request->n_ssids); 558 559 /* 560 * Before Kernel 4.4 561 * Driver gets only one time interval which is hard coded in 562 * supplicant for 10000ms. 563 * 564 * After Kernel 4.4 565 * User can configure multiple scan_plans, each scan would have 566 * separate scan cycle and interval. (interval is in unit of second.) 567 * For our use case, we would only have supplicant set one scan_plan, 568 * and firmware also support only one as well, so pick up the first 569 * index. 570 * 571 * Taking power consumption into account 572 * firmware after gPNOScanTimerRepeatValue times fast_scan_period 573 * switches slow_scan_period. This is less frequent scans and firmware 574 * shall be in slow_scan_period mode until next PNO Start. 575 */ 576 wlan_config_sched_scan_plan(req, request); 577 req->delay_start_time = wlan_config_sched_scan_start_delay(request); 578 req->scan_backoff_multiplier = scan_backoff_multiplier; 579 cfg80211_notice("Base scan interval: %d sec, scan cycles: %d, slow scan interval %d", 580 req->fast_scan_period, req->fast_scan_max_cycles, 581 req->slow_scan_period); 582 wlan_hdd_sched_scan_update_relative_rssi(req, request); 583 584 psoc = wlan_pdev_get_psoc(pdev); 585 ucfg_scan_register_pno_cb(psoc, 586 wlan_cfg80211_pno_callback, NULL); 587 ucfg_scan_get_pno_def_params(vdev, req); 588 589 if (req->scan_random.randomize) 590 wlan_pno_scan_rand_attr(vdev, request, req); 591 592 if (ucfg_ie_whitelist_enabled(psoc, vdev)) 593 ucfg_copy_ie_whitelist_attrs(psoc, &req->ie_whitelist); 594 status = ucfg_scan_pno_start(vdev, req); 595 if (QDF_IS_STATUS_ERROR(status)) { 596 cfg80211_err("Failed to enable PNO"); 597 ret = -EINVAL; 598 goto error; 599 } 600 601 cfg80211_info("PNO scan request offloaded"); 602 603 error: 604 qdf_mem_free(req); 605 return ret; 606 } 607 608 int wlan_cfg80211_sched_scan_stop(struct wlan_objmgr_vdev *vdev) 609 { 610 QDF_STATUS status; 611 612 status = ucfg_scan_pno_stop(vdev); 613 if (QDF_IS_STATUS_ERROR(status)) 614 cfg80211_err("Failed to disabled PNO"); 615 else 616 cfg80211_info("PNO scan disabled"); 617 618 return 0; 619 } 620 #endif /*FEATURE_WLAN_SCAN_PNO */ 621 622 /** 623 * wlan_copy_bssid_scan_request() - API to copy the bssid to Scan request 624 * @scan_req: Pointer to scan_start_request 625 * @request: scan request from Supplicant 626 * 627 * This API copies the BSSID in scan request from Supplicant and copies it to 628 * the scan_start_request 629 * 630 * Return: None 631 */ 632 #if defined(CFG80211_SCAN_BSSID) || \ 633 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)) 634 static inline void 635 wlan_copy_bssid_scan_request(struct scan_start_request *scan_req, 636 struct cfg80211_scan_request *request) 637 { 638 qdf_mem_copy(scan_req->scan_req.bssid_list[0].bytes, 639 request->bssid, QDF_MAC_ADDR_SIZE); 640 } 641 #else 642 static inline void 643 wlan_copy_bssid_scan_request(struct scan_start_request *scan_req, 644 struct cfg80211_scan_request *request) 645 { 646 647 } 648 #endif 649 650 /** 651 * wlan_scan_request_enqueue() - enqueue Scan Request 652 * @pdev: pointer to pdev object 653 * @req: Pointer to the scan request 654 * @source: source of the scan request 655 * @scan_id: scan identifier 656 * 657 * Enqueue scan request in the global scan list.This list 658 * stores the active scan request information. 659 * 660 * Return: 0 on success, error number otherwise 661 */ 662 static int wlan_scan_request_enqueue(struct wlan_objmgr_pdev *pdev, 663 struct cfg80211_scan_request *req, 664 uint8_t source, uint32_t scan_id) 665 { 666 struct scan_req *scan_req; 667 QDF_STATUS status; 668 struct pdev_osif_priv *osif_ctx; 669 struct osif_scan_pdev *osif_scan; 670 671 scan_req = qdf_mem_malloc(sizeof(*scan_req)); 672 if (NULL == scan_req) { 673 cfg80211_alert("malloc failed for Scan req"); 674 return -ENOMEM; 675 } 676 677 /* Get NL global context from objmgr*/ 678 osif_ctx = wlan_pdev_get_ospriv(pdev); 679 osif_scan = osif_ctx->osif_scan; 680 scan_req->scan_request = req; 681 scan_req->source = source; 682 scan_req->scan_id = scan_id; 683 scan_req->dev = req->wdev->netdev; 684 685 qdf_mutex_acquire(&osif_scan->scan_req_q_lock); 686 status = qdf_list_insert_back(&osif_scan->scan_req_q, 687 &scan_req->node); 688 qdf_mutex_release(&osif_scan->scan_req_q_lock); 689 if (QDF_STATUS_SUCCESS != status) { 690 cfg80211_err("Failed to enqueue Scan Req"); 691 qdf_mem_free(scan_req); 692 return -EINVAL; 693 } 694 695 return 0; 696 } 697 698 /** 699 * wlan_scan_request_dequeue() - dequeue scan request 700 * @nl_ctx: Global HDD context 701 * @scan_id: scan id 702 * @req: scan request 703 * @dev: net device 704 * @source : returns source of the scan request 705 * 706 * Return: QDF_STATUS 707 */ 708 static QDF_STATUS wlan_scan_request_dequeue( 709 struct wlan_objmgr_pdev *pdev, 710 uint32_t scan_id, struct cfg80211_scan_request **req, 711 uint8_t *source, struct net_device **dev) 712 { 713 QDF_STATUS status = QDF_STATUS_E_FAILURE; 714 struct scan_req *scan_req; 715 qdf_list_node_t *node = NULL, *next_node = NULL; 716 struct pdev_osif_priv *osif_ctx; 717 struct osif_scan_pdev *scan_priv; 718 719 cfg80211_debug("Dequeue Scan id: %d", scan_id); 720 721 if ((source == NULL) || (req == NULL)) { 722 cfg80211_err("source or request is NULL"); 723 return QDF_STATUS_E_NULL_VALUE; 724 } 725 726 /* Get NL global context from objmgr*/ 727 osif_ctx = wlan_pdev_get_ospriv(pdev); 728 if (!osif_ctx) { 729 cfg80211_err("Failed to retrieve osif context"); 730 return status; 731 } 732 scan_priv = osif_ctx->osif_scan; 733 734 if (qdf_list_empty(&scan_priv->scan_req_q)) { 735 cfg80211_info("Scan List is empty"); 736 return QDF_STATUS_E_FAILURE; 737 } 738 739 qdf_mutex_acquire(&scan_priv->scan_req_q_lock); 740 if (QDF_STATUS_SUCCESS != 741 qdf_list_peek_front(&scan_priv->scan_req_q, &next_node)) { 742 qdf_mutex_release(&scan_priv->scan_req_q_lock); 743 cfg80211_err("Failed to remove Scan Req from queue"); 744 return QDF_STATUS_E_FAILURE; 745 } 746 747 do { 748 node = next_node; 749 scan_req = qdf_container_of(node, struct scan_req, 750 node); 751 if (scan_req->scan_id == scan_id) { 752 status = qdf_list_remove_node(&scan_priv->scan_req_q, 753 node); 754 if (status == QDF_STATUS_SUCCESS) { 755 *req = scan_req->scan_request; 756 *source = scan_req->source; 757 *dev = scan_req->dev; 758 qdf_mem_free(scan_req); 759 qdf_mutex_release(&scan_priv->scan_req_q_lock); 760 cfg80211_debug("removed Scan id: %d, req = %pK, pending scans %d", 761 scan_id, req, 762 qdf_list_size(&scan_priv-> 763 scan_req_q)); 764 return QDF_STATUS_SUCCESS; 765 } else { 766 qdf_mutex_release(&scan_priv->scan_req_q_lock); 767 cfg80211_err("Failed to remove node scan id %d, pending scans %d", 768 scan_id, 769 qdf_list_size(&scan_priv->scan_req_q)); 770 return status; 771 } 772 } 773 } while (QDF_STATUS_SUCCESS == 774 qdf_list_peek_next(&scan_priv->scan_req_q, node, &next_node)); 775 qdf_mutex_release(&scan_priv->scan_req_q_lock); 776 cfg80211_err("Failed to find scan id %d", scan_id); 777 778 return status; 779 } 780 781 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)) 782 /** 783 * wlan_cfg80211_scan_done() - Scan completed callback to cfg80211 784 * @netdev: Net device 785 * @req : Scan request 786 * @aborted : true scan aborted false scan success 787 * 788 * This function notifies scan done to cfg80211 789 * 790 * Return: none 791 */ 792 static void wlan_cfg80211_scan_done(struct net_device *netdev, 793 struct cfg80211_scan_request *req, 794 bool aborted) 795 { 796 struct cfg80211_scan_info info = { 797 .aborted = aborted 798 }; 799 800 if (netdev->flags & IFF_UP) 801 cfg80211_scan_done(req, &info); 802 } 803 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) 804 /** 805 * wlan_cfg80211_scan_done() - Scan completed callback to cfg80211 806 * @netdev: Net device 807 * @req : Scan request 808 * @aborted : true scan aborted false scan success 809 * 810 * This function notifies scan done to cfg80211 811 * 812 * Return: none 813 */ 814 static void wlan_cfg80211_scan_done(struct net_device *netdev, 815 struct cfg80211_scan_request *req, 816 bool aborted) 817 { 818 if (netdev->flags & IFF_UP) 819 cfg80211_scan_done(req, aborted); 820 } 821 #endif 822 823 /** 824 * wlan_vendor_scan_callback() - Scan completed callback event 825 * 826 * @req : Scan request 827 * @aborted : true scan aborted false scan success 828 * 829 * This function sends scan completed callback event to NL. 830 * 831 * Return: none 832 */ 833 static void wlan_vendor_scan_callback(struct cfg80211_scan_request *req, 834 bool aborted) 835 { 836 struct sk_buff *skb; 837 struct nlattr *attr; 838 int i; 839 uint8_t scan_status; 840 uint64_t cookie; 841 842 skb = cfg80211_vendor_event_alloc(req->wdev->wiphy, req->wdev, 843 SCAN_DONE_EVENT_BUF_SIZE + 4 + NLMSG_HDRLEN, 844 QCA_NL80211_VENDOR_SUBCMD_SCAN_DONE_INDEX, 845 GFP_ATOMIC); 846 847 if (!skb) { 848 cfg80211_err("skb alloc failed"); 849 qdf_mem_free(req); 850 return; 851 } 852 853 cookie = (uintptr_t)req; 854 855 attr = nla_nest_start(skb, QCA_WLAN_VENDOR_ATTR_SCAN_SSIDS); 856 if (!attr) 857 goto nla_put_failure; 858 for (i = 0; i < req->n_ssids; i++) { 859 if (nla_put(skb, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 860 goto nla_put_failure; 861 } 862 nla_nest_end(skb, attr); 863 864 attr = nla_nest_start(skb, QCA_WLAN_VENDOR_ATTR_SCAN_FREQUENCIES); 865 if (!attr) 866 goto nla_put_failure; 867 for (i = 0; i < req->n_channels; i++) { 868 if (nla_put_u32(skb, i, req->channels[i]->center_freq)) 869 goto nla_put_failure; 870 } 871 nla_nest_end(skb, attr); 872 873 if (req->ie && 874 nla_put(skb, QCA_WLAN_VENDOR_ATTR_SCAN_IE, req->ie_len, 875 req->ie)) 876 goto nla_put_failure; 877 878 if (req->flags && 879 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_SCAN_FLAGS, req->flags)) 880 goto nla_put_failure; 881 882 if (wlan_cfg80211_nla_put_u64(skb, QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE, 883 cookie)) 884 goto nla_put_failure; 885 886 scan_status = (aborted == true) ? VENDOR_SCAN_STATUS_ABORTED : 887 VENDOR_SCAN_STATUS_NEW_RESULTS; 888 if (nla_put_u8(skb, QCA_WLAN_VENDOR_ATTR_SCAN_STATUS, scan_status)) 889 goto nla_put_failure; 890 891 cfg80211_vendor_event(skb, GFP_ATOMIC); 892 qdf_mem_free(req); 893 894 return; 895 896 nla_put_failure: 897 kfree_skb(skb); 898 qdf_mem_free(req); 899 } 900 901 /** 902 * wlan_scan_acquire_wake_lock_timeout() - acquire scan wake lock 903 * @psoc: psoc ptr 904 * @scan_wake_lock: Scan wake lock 905 * @timeout: timeout in ms 906 * 907 * Return: void 908 */ 909 static inline 910 void wlan_scan_acquire_wake_lock_timeout(struct wlan_objmgr_psoc *psoc, 911 qdf_wake_lock_t *scan_wake_lock, 912 uint32_t timeout) 913 { 914 if (!psoc || !scan_wake_lock) 915 return; 916 917 if (ucfg_scan_wake_lock_in_user_scan(psoc)) 918 qdf_wake_lock_timeout_acquire(scan_wake_lock, timeout); 919 } 920 921 922 /** 923 * wlan_scan_release_wake_lock() - release scan wake lock 924 * @psoc: psoc ptr 925 * @scan_wake_lock: Scan wake lock 926 * 927 * Return: void 928 */ 929 #ifdef FEATURE_WLAN_DIAG_SUPPORT 930 static inline 931 void wlan_scan_release_wake_lock(struct wlan_objmgr_psoc *psoc, 932 qdf_wake_lock_t *scan_wake_lock) 933 { 934 if (!psoc || !scan_wake_lock) 935 return; 936 937 if (ucfg_scan_wake_lock_in_user_scan(psoc)) 938 qdf_wake_lock_release(scan_wake_lock, 939 WIFI_POWER_EVENT_WAKELOCK_SCAN); 940 } 941 #else 942 static inline 943 void wlan_scan_release_wake_lock(struct wlan_objmgr_psoc *psoc, 944 qdf_wake_lock_t *scan_wake_lock) 945 { 946 if (!psoc || !scan_wake_lock) 947 return; 948 949 if (ucfg_scan_wake_lock_in_user_scan(psoc)) 950 qdf_wake_lock_release(scan_wake_lock, 0); 951 } 952 #endif 953 954 /** 955 * wlan_cfg80211_scan_done_callback() - scan done callback function called after 956 * scan is finished 957 * @vdev: vdev ptr 958 * @event: Scan event 959 * @args: Scan cb arg 960 * 961 * Return: void 962 */ 963 static void wlan_cfg80211_scan_done_callback( 964 struct wlan_objmgr_vdev *vdev, 965 struct scan_event *event, 966 void *args) 967 { 968 struct cfg80211_scan_request *req = NULL; 969 bool success = false; 970 uint32_t scan_id = event->scan_id; 971 uint8_t source = NL_SCAN; 972 struct wlan_objmgr_pdev *pdev; 973 struct pdev_osif_priv *osif_priv; 974 struct net_device *netdev = NULL; 975 QDF_STATUS status; 976 977 qdf_mtrace(QDF_MODULE_ID_SCAN, QDF_MODULE_ID_OS_IF, event->type, 978 event->vdev_id, event->scan_id); 979 980 if (!util_is_scan_completed(event, &success)) 981 return; 982 983 cfg80211_debug("scan ID = %d vdev id = %d, event type %s(%d) reason = %s(%d)", 984 scan_id, event->vdev_id, 985 util_scan_get_ev_type_name(event->type), event->type, 986 util_scan_get_ev_reason_name(event->reason), 987 event->reason); 988 989 pdev = wlan_vdev_get_pdev(vdev); 990 status = wlan_scan_request_dequeue( 991 pdev, scan_id, &req, &source, &netdev); 992 if (QDF_IS_STATUS_ERROR(status)) { 993 cfg80211_err("Dequeue of scan request failed ID: %d", scan_id); 994 goto allow_suspend; 995 } 996 997 if (!netdev) { 998 cfg80211_err("net dev is NULL,Drop scan event Id: %d", 999 scan_id); 1000 goto allow_suspend; 1001 } 1002 1003 /* Make sure vdev is active */ 1004 status = wlan_objmgr_vdev_try_get_ref(vdev, WLAN_OSIF_ID); 1005 if (QDF_IS_STATUS_ERROR(status)) { 1006 cfg80211_err("Failed to get vdev reference: scan Id: %d", 1007 scan_id); 1008 goto allow_suspend; 1009 } 1010 1011 /* 1012 * Scan can be triggred from NL or vendor scan 1013 * - If scan is triggered from NL then cfg80211 scan done should be 1014 * called to updated scan completion to NL. 1015 * - If scan is triggred through vendor command then 1016 * scan done event will be posted 1017 */ 1018 if (NL_SCAN == source) 1019 wlan_cfg80211_scan_done(netdev, req, !success); 1020 else 1021 wlan_vendor_scan_callback(req, !success); 1022 1023 wlan_objmgr_vdev_release_ref(vdev, WLAN_OSIF_ID); 1024 allow_suspend: 1025 osif_priv = wlan_pdev_get_ospriv(pdev); 1026 if (qdf_list_empty(&osif_priv->osif_scan->scan_req_q)) { 1027 struct wlan_objmgr_psoc *psoc; 1028 1029 qdf_runtime_pm_allow_suspend( 1030 &osif_priv->osif_scan->runtime_pm_lock); 1031 1032 psoc = wlan_pdev_get_psoc(pdev); 1033 wlan_scan_release_wake_lock(psoc, 1034 &osif_priv->osif_scan->scan_wake_lock); 1035 /* 1036 * Acquire wakelock to handle the case where APP's tries 1037 * to suspend immediately after the driver gets connect 1038 * request(i.e after scan) from supplicant, this result in 1039 * app's is suspending and not able to process the connect 1040 * request to AP 1041 */ 1042 wlan_scan_acquire_wake_lock_timeout(psoc, 1043 &osif_priv->osif_scan->scan_wake_lock, 1044 SCAN_WAKE_LOCK_CONNECT_DURATION); 1045 } 1046 } 1047 1048 QDF_STATUS wlan_scan_runtime_pm_init(struct wlan_objmgr_pdev *pdev) 1049 { 1050 struct pdev_osif_priv *osif_priv; 1051 struct osif_scan_pdev *scan_priv; 1052 1053 wlan_pdev_obj_lock(pdev); 1054 osif_priv = wlan_pdev_get_ospriv(pdev); 1055 wlan_pdev_obj_unlock(pdev); 1056 1057 scan_priv = osif_priv->osif_scan; 1058 1059 return qdf_runtime_lock_init(&scan_priv->runtime_pm_lock); 1060 } 1061 1062 void wlan_scan_runtime_pm_deinit(struct wlan_objmgr_pdev *pdev) 1063 { 1064 struct pdev_osif_priv *osif_priv; 1065 struct osif_scan_pdev *scan_priv; 1066 1067 wlan_pdev_obj_lock(pdev); 1068 osif_priv = wlan_pdev_get_ospriv(pdev); 1069 wlan_pdev_obj_unlock(pdev); 1070 1071 scan_priv = osif_priv->osif_scan; 1072 qdf_runtime_lock_deinit(&scan_priv->runtime_pm_lock); 1073 } 1074 1075 QDF_STATUS wlan_cfg80211_scan_priv_init(struct wlan_objmgr_pdev *pdev) 1076 { 1077 struct pdev_osif_priv *osif_priv; 1078 struct osif_scan_pdev *scan_priv; 1079 struct wlan_objmgr_psoc *psoc; 1080 wlan_scan_requester req_id; 1081 1082 psoc = wlan_pdev_get_psoc(pdev); 1083 1084 req_id = ucfg_scan_register_requester(psoc, "CFG", 1085 wlan_cfg80211_scan_done_callback, NULL); 1086 1087 osif_priv = wlan_pdev_get_ospriv(pdev); 1088 scan_priv = qdf_mem_malloc(sizeof(*scan_priv)); 1089 if (!scan_priv) { 1090 cfg80211_err("failed to allocate memory"); 1091 return QDF_STATUS_E_NOMEM; 1092 } 1093 /* Initialize the scan request queue */ 1094 osif_priv->osif_scan = scan_priv; 1095 scan_priv->req_id = req_id; 1096 qdf_list_create(&scan_priv->scan_req_q, WLAN_MAX_SCAN_COUNT); 1097 qdf_mutex_create(&scan_priv->scan_req_q_lock); 1098 qdf_wake_lock_create(&scan_priv->scan_wake_lock, "scan_wake_lock"); 1099 1100 return QDF_STATUS_SUCCESS; 1101 } 1102 1103 QDF_STATUS wlan_cfg80211_scan_priv_deinit(struct wlan_objmgr_pdev *pdev) 1104 { 1105 struct pdev_osif_priv *osif_priv; 1106 struct osif_scan_pdev *scan_priv; 1107 struct wlan_objmgr_psoc *psoc; 1108 1109 psoc = wlan_pdev_get_psoc(pdev); 1110 osif_priv = wlan_pdev_get_ospriv(pdev); 1111 1112 wlan_cfg80211_cleanup_scan_queue(pdev, NULL); 1113 scan_priv = osif_priv->osif_scan; 1114 qdf_wake_lock_destroy(&scan_priv->scan_wake_lock); 1115 qdf_mutex_destroy(&scan_priv->scan_req_q_lock); 1116 qdf_list_destroy(&scan_priv->scan_req_q); 1117 ucfg_scan_unregister_requester(psoc, scan_priv->req_id); 1118 osif_priv->osif_scan = NULL; 1119 qdf_mem_free(scan_priv); 1120 1121 return QDF_STATUS_SUCCESS; 1122 } 1123 1124 /** 1125 * wlan_cfg80211_enqueue_for_cleanup() - Function to populate scan cleanup queue 1126 * @scan_cleanup_q: Scan cleanup queue to be populated 1127 * @scan_priv: Pointer to scan related data used by cfg80211 scan 1128 * @dev: Netdevice pointer 1129 * 1130 * The function synchrounously iterates through the global scan queue to 1131 * identify entries that have to be cleaned up, copies identified entries 1132 * to another queue(to send scan complete event to NL later) and removes the 1133 * entry from the global scan queue. 1134 * 1135 * Return: None 1136 */ 1137 static void 1138 wlan_cfg80211_enqueue_for_cleanup(qdf_list_t *scan_cleanup_q, 1139 struct osif_scan_pdev *scan_priv, 1140 struct net_device *dev) 1141 { 1142 struct scan_req *scan_req, *scan_cleanup; 1143 qdf_list_node_t *node = NULL, *next_node = NULL; 1144 1145 qdf_mutex_acquire(&scan_priv->scan_req_q_lock); 1146 if (QDF_STATUS_SUCCESS != 1147 qdf_list_peek_front(&scan_priv->scan_req_q, 1148 &node)) { 1149 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1150 return; 1151 } 1152 1153 while (node) { 1154 /* 1155 * Keep track of the next node, to traverse through the list 1156 * in the event of the current node being deleted. 1157 */ 1158 qdf_list_peek_next(&scan_priv->scan_req_q, 1159 node, &next_node); 1160 scan_req = qdf_container_of(node, struct scan_req, node); 1161 if (!dev || (dev == scan_req->dev)) { 1162 scan_cleanup = qdf_mem_malloc(sizeof(struct scan_req)); 1163 if (!scan_cleanup) { 1164 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1165 cfg80211_err("Failed to allocate memory"); 1166 return; 1167 } 1168 scan_cleanup->scan_request = scan_req->scan_request; 1169 scan_cleanup->scan_id = scan_req->scan_id; 1170 scan_cleanup->source = scan_req->source; 1171 scan_cleanup->dev = scan_req->dev; 1172 qdf_list_insert_back(scan_cleanup_q, 1173 &scan_cleanup->node); 1174 if (QDF_STATUS_SUCCESS != 1175 qdf_list_remove_node(&scan_priv->scan_req_q, 1176 node)) { 1177 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1178 cfg80211_err("Failed to remove scan request"); 1179 return; 1180 } 1181 qdf_mem_free(scan_req); 1182 } 1183 node = next_node; 1184 next_node = NULL; 1185 } 1186 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1187 } 1188 1189 void wlan_cfg80211_cleanup_scan_queue(struct wlan_objmgr_pdev *pdev, 1190 struct net_device *dev) 1191 { 1192 struct scan_req *scan_req; 1193 struct cfg80211_scan_request *req; 1194 uint8_t source; 1195 bool aborted = true; 1196 struct pdev_osif_priv *osif_priv; 1197 qdf_list_t scan_cleanup_q; 1198 qdf_list_node_t *node = NULL; 1199 1200 if (!pdev) { 1201 cfg80211_err("pdev is Null"); 1202 return; 1203 } 1204 1205 osif_priv = wlan_pdev_get_ospriv(pdev); 1206 1207 /* 1208 * To avoid any race conditions, create a local list to copy all the 1209 * scan entries to be removed and then send scan complete for each of 1210 * the identified entries to NL. 1211 */ 1212 qdf_list_create(&scan_cleanup_q, WLAN_MAX_SCAN_COUNT); 1213 wlan_cfg80211_enqueue_for_cleanup(&scan_cleanup_q, 1214 osif_priv->osif_scan, dev); 1215 1216 while (!qdf_list_empty(&scan_cleanup_q)) { 1217 if (QDF_STATUS_SUCCESS != qdf_list_remove_front(&scan_cleanup_q, 1218 &node)) { 1219 cfg80211_err("Failed to remove scan request"); 1220 return; 1221 } 1222 scan_req = container_of(node, struct scan_req, node); 1223 req = scan_req->scan_request; 1224 source = scan_req->source; 1225 if (NL_SCAN == source) 1226 wlan_cfg80211_scan_done(scan_req->dev, req, 1227 aborted); 1228 else 1229 wlan_vendor_scan_callback(req, aborted); 1230 1231 qdf_mem_free(scan_req); 1232 } 1233 qdf_list_destroy(&scan_cleanup_q); 1234 1235 return; 1236 } 1237 1238 /** 1239 * wlan_cfg80211_update_scan_policy_type_flags() - Set scan flags according to 1240 * scan request 1241 * @scan_req: Pointer to csr scan req 1242 * 1243 * Return: None 1244 */ 1245 #if defined(CFG80211_SCAN_DBS_CONTROL_SUPPORT) || \ 1246 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)) 1247 static void wlan_cfg80211_update_scan_policy_type_flags( 1248 struct cfg80211_scan_request *req, 1249 struct scan_req_params *scan_req) 1250 { 1251 if (req->flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) 1252 scan_req->scan_policy_high_accuracy = true; 1253 if (req->flags & NL80211_SCAN_FLAG_LOW_SPAN) 1254 scan_req->scan_policy_low_span = true; 1255 if (req->flags & NL80211_SCAN_FLAG_LOW_POWER) 1256 scan_req->scan_policy_low_power = true; 1257 } 1258 #else 1259 static inline void wlan_cfg80211_update_scan_policy_type_flags( 1260 struct cfg80211_scan_request *req, 1261 struct scan_req_params *scan_req) 1262 { 1263 } 1264 #endif 1265 1266 #ifdef WLAN_POLICY_MGR_ENABLE 1267 static bool 1268 wlan_cfg80211_allow_simultaneous_scan(struct wlan_objmgr_psoc *psoc) 1269 { 1270 return policy_mgr_is_scan_simultaneous_capable(psoc); 1271 } 1272 #else 1273 static bool 1274 wlan_cfg80211_allow_simultaneous_scan(struct wlan_objmgr_psoc *psoc) 1275 { 1276 return true; 1277 } 1278 #endif 1279 1280 int wlan_cfg80211_scan(struct wlan_objmgr_vdev *vdev, 1281 struct cfg80211_scan_request *request, 1282 struct scan_params *params) 1283 { 1284 struct scan_start_request *req; 1285 struct wlan_ssid *pssid; 1286 uint8_t i; 1287 int ret = 0; 1288 uint8_t num_chan = 0, channel; 1289 uint32_t c_freq; 1290 struct wlan_objmgr_pdev *pdev = wlan_vdev_get_pdev(vdev); 1291 wlan_scan_requester req_id; 1292 struct pdev_osif_priv *osif_priv; 1293 struct wlan_objmgr_psoc *psoc; 1294 wlan_scan_id scan_id; 1295 bool is_p2p_scan = false; 1296 enum wlan_band band; 1297 struct net_device *netdev = NULL; 1298 QDF_STATUS qdf_status; 1299 1300 psoc = wlan_pdev_get_psoc(pdev); 1301 if (!psoc) { 1302 cfg80211_err("Invalid psoc object"); 1303 return -EINVAL; 1304 } 1305 1306 /* Get NL global context from objmgr*/ 1307 osif_priv = wlan_pdev_get_ospriv(pdev); 1308 if (!osif_priv) { 1309 cfg80211_err("Invalid osif priv object"); 1310 return -EINVAL; 1311 } 1312 1313 /* 1314 * If a scan is already going on i.e the qdf_list ( scan que) is not 1315 * empty, and the simultaneous scan is disabled, dont allow 2nd scan 1316 */ 1317 if (!wlan_cfg80211_allow_simultaneous_scan(psoc) && 1318 !qdf_list_empty(&osif_priv->osif_scan->scan_req_q)) { 1319 cfg80211_err("Simultaneous scan disabled, reject scan"); 1320 return -EINVAL; 1321 } 1322 1323 req = qdf_mem_malloc(sizeof(*req)); 1324 if (!req) { 1325 cfg80211_err("Failed to allocate scan request memory"); 1326 return -EINVAL; 1327 } 1328 /* Initialize the scan global params */ 1329 ucfg_scan_init_default_params(vdev, req); 1330 1331 req_id = osif_priv->osif_scan->req_id; 1332 scan_id = ucfg_scan_get_scan_id(psoc); 1333 if (!scan_id) { 1334 cfg80211_err("Invalid scan id"); 1335 qdf_mem_free(req); 1336 return -EINVAL; 1337 } 1338 1339 /* fill the scan request structure */ 1340 req->vdev = vdev; 1341 req->scan_req.vdev_id = wlan_vdev_get_id(vdev); 1342 req->scan_req.scan_id = scan_id; 1343 req->scan_req.scan_req_id = req_id; 1344 1345 /* Update scan policy type flags according to cfg scan request */ 1346 wlan_cfg80211_update_scan_policy_type_flags(request, 1347 &req->scan_req); 1348 /* 1349 * Even though supplicant doesn't provide any SSIDs, n_ssids is 1350 * set to 1. Because of this, driver is assuming that this is not 1351 * wildcard scan and so is not aging out the scan results. 1352 */ 1353 if ((request->ssids) && (request->n_ssids == 1) && 1354 ('\0' == request->ssids->ssid[0])) { 1355 request->n_ssids = 0; 1356 } 1357 1358 if ((request->ssids) && (0 < request->n_ssids)) { 1359 int j; 1360 req->scan_req.num_ssids = request->n_ssids; 1361 1362 if (req->scan_req.num_ssids > WLAN_SCAN_MAX_NUM_SSID) { 1363 cfg80211_info("number of ssid received %d is greater than MAX %d so copy only MAX nuber of SSIDs", 1364 req->scan_req.num_ssids, 1365 WLAN_SCAN_MAX_NUM_SSID); 1366 req->scan_req.num_ssids = WLAN_SCAN_MAX_NUM_SSID; 1367 } 1368 /* copy all the ssid's and their length */ 1369 for (j = 0; j < req->scan_req.num_ssids; j++) { 1370 pssid = &req->scan_req.ssid[j]; 1371 /* get the ssid length */ 1372 pssid->length = request->ssids[j].ssid_len; 1373 if (pssid->length > WLAN_SSID_MAX_LEN) 1374 pssid->length = WLAN_SSID_MAX_LEN; 1375 qdf_mem_copy(pssid->ssid, 1376 &request->ssids[j].ssid[0], 1377 pssid->length); 1378 cfg80211_info("SSID number %d: %.*s", j, pssid->length, 1379 pssid->ssid); 1380 } 1381 } 1382 if (request->ssids || 1383 (wlan_vdev_mlme_get_opmode(vdev) == QDF_P2P_GO_MODE)) 1384 req->scan_req.scan_f_passive = false; 1385 1386 if (params->half_rate) 1387 req->scan_req.scan_f_half_rate = true; 1388 else if (params->quarter_rate) 1389 req->scan_req.scan_f_quarter_rate = true; 1390 1391 if (params->strict_pscan) 1392 req->scan_req.scan_f_strict_passive_pch = true; 1393 1394 if ((request->n_ssids == 1) && request->ssids && 1395 !qdf_mem_cmp(&request->ssids[0], "DIRECT-", 7)) 1396 is_p2p_scan = true; 1397 1398 if (is_p2p_scan && request->no_cck) 1399 req->scan_req.p2p_scan_type = SCAN_P2P_SEARCH; 1400 1401 /* Set dwell time mode according to scan policy type flags */ 1402 if (req->scan_req.scan_policy_high_accuracy) 1403 req->scan_req.adaptive_dwell_time_mode = 1404 SCAN_DWELL_MODE_STATIC; 1405 if ((req->scan_req.scan_policy_low_power) || 1406 (req->scan_req.scan_policy_low_span)) 1407 req->scan_req.adaptive_dwell_time_mode = 1408 SCAN_DWELL_MODE_AGGRESSIVE; 1409 1410 /* 1411 * FW require at least 1 MAC to send probe request. 1412 * If MAC is all 0 set it to BC addr as this is the address on 1413 * which fw will send probe req. 1414 */ 1415 req->scan_req.num_bssid = 1; 1416 wlan_copy_bssid_scan_request(req, request); 1417 if (qdf_is_macaddr_zero(&req->scan_req.bssid_list[0])) 1418 qdf_set_macaddr_broadcast(&req->scan_req.bssid_list[0]); 1419 1420 if (request->n_channels) { 1421 char *chl = qdf_mem_malloc((request->n_channels * 5) + 1); 1422 int len = 0; 1423 #ifdef WLAN_POLICY_MGR_ENABLE 1424 bool ap_or_go_present = 1425 policy_mgr_mode_specific_connection_count( 1426 psoc, PM_SAP_MODE, NULL) || 1427 policy_mgr_mode_specific_connection_count( 1428 psoc, PM_P2P_GO_MODE, NULL); 1429 #endif 1430 if (!chl) { 1431 ret = -ENOMEM; 1432 goto end; 1433 } 1434 for (i = 0; i < request->n_channels; i++) { 1435 channel = request->channels[i]->hw_value; 1436 c_freq = wlan_reg_chan_to_freq(pdev, channel); 1437 if (wlan_reg_is_dsrc_chan(pdev, channel)) 1438 continue; 1439 #ifdef WLAN_POLICY_MGR_ENABLE 1440 if (ap_or_go_present) { 1441 bool ok; 1442 1443 qdf_status = 1444 policy_mgr_is_chan_ok_for_dnbs(psoc, 1445 channel, 1446 &ok); 1447 1448 if (QDF_IS_STATUS_ERROR(qdf_status)) { 1449 cfg80211_err("DNBS check failed"); 1450 qdf_mem_free(req); 1451 qdf_mem_free(chl); 1452 chl = NULL; 1453 ret = -EINVAL; 1454 goto end; 1455 } 1456 if (!ok) 1457 continue; 1458 } 1459 #endif 1460 len += snprintf(chl + len, 5, "%d ", channel); 1461 req->scan_req.chan_list.chan[num_chan].freq = c_freq; 1462 band = util_scan_scm_freq_to_band(c_freq); 1463 if (band == WLAN_BAND_2_4_GHZ) 1464 req->scan_req.chan_list.chan[num_chan].phymode = 1465 SCAN_PHY_MODE_11G; 1466 else 1467 req->scan_req.chan_list.chan[num_chan].phymode = 1468 SCAN_PHY_MODE_11A; 1469 num_chan++; 1470 if (num_chan >= WLAN_SCAN_MAX_NUM_CHANNELS) 1471 break; 1472 } 1473 cfg80211_info("Channel-List: %s", chl); 1474 qdf_mem_free(chl); 1475 chl = NULL; 1476 cfg80211_info("No. of Scan Channels: %d", num_chan); 1477 } 1478 if (!num_chan) { 1479 cfg80211_err("Received zero non-dsrc channels"); 1480 qdf_mem_free(req); 1481 ret = -EINVAL; 1482 goto end; 1483 } 1484 req->scan_req.chan_list.num_chan = num_chan; 1485 1486 /* P2P increase the scan priority */ 1487 if (is_p2p_scan) 1488 req->scan_req.scan_priority = SCAN_PRIORITY_HIGH; 1489 if (request->ie_len) { 1490 req->scan_req.extraie.ptr = qdf_mem_malloc(request->ie_len); 1491 if (!req->scan_req.extraie.ptr) { 1492 cfg80211_err("Failed to allocate memory"); 1493 ret = -ENOMEM; 1494 qdf_mem_free(req); 1495 goto end; 1496 } 1497 req->scan_req.extraie.len = request->ie_len; 1498 qdf_mem_copy(req->scan_req.extraie.ptr, request->ie, 1499 request->ie_len); 1500 } else if (params->default_ie.ptr && params->default_ie.len) { 1501 req->scan_req.extraie.ptr = 1502 qdf_mem_malloc(params->default_ie.len); 1503 if (!req->scan_req.extraie.ptr) { 1504 cfg80211_err("Failed to allocate memory"); 1505 ret = -ENOMEM; 1506 qdf_mem_free(req); 1507 goto end; 1508 } 1509 req->scan_req.extraie.len = params->default_ie.len; 1510 qdf_mem_copy(req->scan_req.extraie.ptr, params->default_ie.ptr, 1511 params->default_ie.len); 1512 } 1513 1514 if (!is_p2p_scan) { 1515 if (req->scan_req.scan_random.randomize) 1516 wlan_scan_rand_attrs(vdev, request, req); 1517 if (ucfg_ie_whitelist_enabled(psoc, vdev) && 1518 ucfg_copy_ie_whitelist_attrs(psoc, 1519 &req->scan_req.ie_whitelist)) 1520 req->scan_req.scan_f_en_ie_whitelist_in_probe = true; 1521 } 1522 1523 if (request->flags & NL80211_SCAN_FLAG_FLUSH) 1524 ucfg_scan_flush_results(pdev, NULL); 1525 1526 /* Enqueue the scan request */ 1527 wlan_scan_request_enqueue(pdev, request, params->source, 1528 req->scan_req.scan_id); 1529 1530 /* 1531 * Acquire wakelock to handle the case where APP's send scan to connect. 1532 * If suspend is received during scan scan will be aborted and APP will 1533 * not get scan result and not connect. eg if PNO is implemented in 1534 * framework. 1535 */ 1536 wlan_scan_acquire_wake_lock_timeout(psoc, 1537 &osif_priv->osif_scan->scan_wake_lock, 1538 SCAN_WAKE_LOCK_SCAN_DURATION); 1539 1540 qdf_runtime_pm_prevent_suspend( 1541 &osif_priv->osif_scan->runtime_pm_lock); 1542 1543 qdf_status = ucfg_scan_start(req); 1544 if (QDF_IS_STATUS_ERROR(qdf_status)) { 1545 cfg80211_err("ucfg_scan_start returned error %d", qdf_status); 1546 if (qdf_status == QDF_STATUS_E_RESOURCES) 1547 cfg80211_err("HO is in progress.So defer the scan by informing busy"); 1548 wlan_scan_request_dequeue(pdev, scan_id, &request, 1549 ¶ms->source, &netdev); 1550 if (qdf_list_empty(&osif_priv->osif_scan->scan_req_q)) { 1551 qdf_runtime_pm_allow_suspend( 1552 &osif_priv->osif_scan->runtime_pm_lock); 1553 wlan_scan_release_wake_lock(psoc, 1554 &osif_priv->osif_scan->scan_wake_lock); 1555 } 1556 } 1557 ret = qdf_status_to_os_return(qdf_status); 1558 1559 end: 1560 return ret; 1561 } 1562 1563 /** 1564 * wlan_get_scanid() - API to get the scan id 1565 * from the scan cookie attribute. 1566 * @pdev: Pointer to pdev object 1567 * @scan_id: Pointer to scan id 1568 * @cookie : Scan cookie attribute 1569 * 1570 * API to get the scan id from the scan cookie attribute 1571 * sent from supplicant by matching scan request. 1572 * 1573 * Return: 0 for success, non zero for failure 1574 */ 1575 static int wlan_get_scanid(struct wlan_objmgr_pdev *pdev, 1576 uint32_t *scan_id, uint64_t cookie) 1577 { 1578 struct scan_req *scan_req; 1579 qdf_list_node_t *node = NULL; 1580 qdf_list_node_t *ptr_node = NULL; 1581 int ret = -EINVAL; 1582 struct pdev_osif_priv *osif_ctx; 1583 struct osif_scan_pdev *scan_priv; 1584 1585 /* Get NL global context from objmgr*/ 1586 osif_ctx = wlan_pdev_get_ospriv(pdev); 1587 if (!osif_ctx) { 1588 cfg80211_err("Failed to retrieve osif context"); 1589 return ret; 1590 } 1591 scan_priv = osif_ctx->osif_scan; 1592 qdf_mutex_acquire(&scan_priv->scan_req_q_lock); 1593 if (qdf_list_empty(&scan_priv->scan_req_q)) { 1594 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1595 cfg80211_err("Failed to retrieve scan id"); 1596 return ret; 1597 } 1598 1599 if (QDF_STATUS_SUCCESS != 1600 qdf_list_peek_front(&scan_priv->scan_req_q, 1601 &ptr_node)) { 1602 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1603 return ret; 1604 } 1605 1606 do { 1607 node = ptr_node; 1608 scan_req = qdf_container_of(node, struct scan_req, node); 1609 if (cookie == 1610 (uintptr_t)(scan_req->scan_request)) { 1611 *scan_id = scan_req->scan_id; 1612 ret = 0; 1613 break; 1614 } 1615 } while (QDF_STATUS_SUCCESS == 1616 qdf_list_peek_next(&scan_priv->scan_req_q, 1617 node, &ptr_node)); 1618 1619 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1620 1621 return ret; 1622 } 1623 1624 QDF_STATUS wlan_abort_scan(struct wlan_objmgr_pdev *pdev, 1625 uint32_t pdev_id, uint32_t vdev_id, 1626 wlan_scan_id scan_id, bool sync) 1627 { 1628 struct scan_cancel_request *req; 1629 struct pdev_osif_priv *osif_ctx; 1630 struct osif_scan_pdev *scan_priv; 1631 QDF_STATUS status; 1632 struct wlan_objmgr_vdev *vdev; 1633 1634 req = qdf_mem_malloc(sizeof(*req)); 1635 if (!req) { 1636 cfg80211_err("Failed to allocate memory"); 1637 return QDF_STATUS_E_NOMEM; 1638 } 1639 1640 /* Get NL global context from objmgr*/ 1641 osif_ctx = wlan_pdev_get_ospriv(pdev); 1642 if (!osif_ctx) { 1643 cfg80211_err("Failed to retrieve osif context"); 1644 qdf_mem_free(req); 1645 return QDF_STATUS_E_FAILURE; 1646 } 1647 if (vdev_id == INVAL_VDEV_ID) 1648 vdev = wlan_objmgr_pdev_get_first_vdev(pdev, WLAN_OSIF_ID); 1649 else 1650 vdev = wlan_objmgr_get_vdev_by_id_from_pdev(pdev, 1651 vdev_id, WLAN_OSIF_ID); 1652 1653 if (!vdev) { 1654 cfg80211_err("Failed get vdev"); 1655 qdf_mem_free(req); 1656 return QDF_STATUS_E_INVAL; 1657 } 1658 scan_priv = osif_ctx->osif_scan; 1659 req->cancel_req.requester = scan_priv->req_id; 1660 req->vdev = vdev; 1661 req->cancel_req.scan_id = scan_id; 1662 req->cancel_req.pdev_id = pdev_id; 1663 req->cancel_req.vdev_id = vdev_id; 1664 if (scan_id != INVAL_SCAN_ID) 1665 req->cancel_req.req_type = WLAN_SCAN_CANCEL_SINGLE; 1666 else if (vdev_id == INVAL_VDEV_ID) 1667 req->cancel_req.req_type = WLAN_SCAN_CANCEL_PDEV_ALL; 1668 else 1669 req->cancel_req.req_type = WLAN_SCAN_CANCEL_VDEV_ALL; 1670 1671 if (sync) 1672 status = ucfg_scan_cancel_sync(req); 1673 else 1674 status = ucfg_scan_cancel(req); 1675 if (QDF_IS_STATUS_ERROR(status)) 1676 cfg80211_err("Cancel scan request failed"); 1677 1678 wlan_objmgr_vdev_release_ref(vdev, WLAN_OSIF_ID); 1679 1680 return status; 1681 } 1682 1683 int wlan_cfg80211_abort_scan(struct wlan_objmgr_pdev *pdev) 1684 { 1685 uint8_t pdev_id; 1686 1687 pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 1688 1689 if (ucfg_scan_get_pdev_status(pdev) != 1690 SCAN_NOT_IN_PROGRESS) 1691 wlan_abort_scan(pdev, pdev_id, 1692 INVAL_VDEV_ID, INVAL_SCAN_ID, true); 1693 1694 return 0; 1695 } 1696 1697 int wlan_vendor_abort_scan(struct wlan_objmgr_pdev *pdev, 1698 const void *data, int data_len) 1699 { 1700 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_SCAN_MAX + 1]; 1701 int ret = -EINVAL; 1702 wlan_scan_id scan_id; 1703 uint64_t cookie; 1704 uint8_t pdev_id; 1705 1706 pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 1707 if (wlan_cfg80211_nla_parse(tb, QCA_WLAN_VENDOR_ATTR_SCAN_MAX, data, 1708 data_len, scan_policy)) { 1709 cfg80211_err("Invalid ATTR"); 1710 return ret; 1711 } 1712 1713 if (tb[QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE]) { 1714 cookie = nla_get_u64( 1715 tb[QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE]); 1716 ret = wlan_get_scanid(pdev, &scan_id, cookie); 1717 if (ret != 0) 1718 return ret; 1719 if (ucfg_scan_get_pdev_status(pdev) != 1720 SCAN_NOT_IN_PROGRESS) 1721 wlan_abort_scan(pdev, INVAL_PDEV_ID, 1722 INVAL_VDEV_ID, scan_id, true); 1723 } 1724 return 0; 1725 } 1726 1727 static inline struct ieee80211_channel * 1728 wlan_get_ieee80211_channel(struct wiphy *wiphy, 1729 struct wlan_objmgr_pdev *pdev, 1730 int chan_no) 1731 { 1732 unsigned int freq; 1733 struct ieee80211_channel *chan; 1734 1735 freq = wlan_reg_chan_to_freq(pdev, chan_no); 1736 chan = ieee80211_get_channel(wiphy, freq); 1737 if (!chan) 1738 cfg80211_err("chan is NULL, chan_no: %d freq: %d", 1739 chan_no, freq); 1740 1741 return chan; 1742 } 1743 1744 #ifdef WLAN_ENABLE_AGEIE_ON_SCAN_RESULTS 1745 static inline int wlan_get_frame_len(struct scan_cache_entry *scan_params) 1746 { 1747 return util_scan_entry_frame_len(scan_params) + sizeof(qcom_ie_age); 1748 } 1749 1750 static inline void wlan_add_age_ie(uint8_t *mgmt_frame, 1751 struct scan_cache_entry *scan_params) 1752 { 1753 qcom_ie_age *qie_age = NULL; 1754 1755 /* GPS Requirement: need age ie per entry. Using vendor specific. */ 1756 /* Assuming this is the last IE, copy at the end */ 1757 qie_age = (qcom_ie_age *) (mgmt_frame + 1758 util_scan_entry_frame_len(scan_params)); 1759 qie_age->element_id = QCOM_VENDOR_IE_ID; 1760 qie_age->len = QCOM_VENDOR_IE_AGE_LEN; 1761 qie_age->oui_1 = QCOM_OUI1; 1762 qie_age->oui_2 = QCOM_OUI2; 1763 qie_age->oui_3 = QCOM_OUI3; 1764 qie_age->type = QCOM_VENDOR_IE_AGE_TYPE; 1765 /* 1766 * Lowi expects the timestamp of bss in units of 1/10 ms. In driver 1767 * all bss related timestamp is in units of ms. Due to this when scan 1768 * results are sent to lowi the scan age is high.To address this, 1769 * send age in units of 1/10 ms. 1770 */ 1771 qie_age->age = 1772 (uint32_t)(qdf_mc_timer_get_system_time() - 1773 scan_params->scan_entry_time)/10; 1774 qie_age->tsf_delta = scan_params->tsf_delta; 1775 memcpy(&qie_age->beacon_tsf, scan_params->tsf_info.data, 1776 sizeof(qie_age->beacon_tsf)); 1777 memcpy(&qie_age->seq_ctrl, &scan_params->seq_num, 1778 sizeof(qie_age->seq_ctrl)); 1779 } 1780 #else 1781 static inline int wlan_get_frame_len(struct scan_cache_entry *scan_params) 1782 { 1783 return util_scan_entry_frame_len(scan_params); 1784 } 1785 1786 static inline void wlan_add_age_ie(uint8_t *mgmt_frame, 1787 struct scan_cache_entry *scan_params) 1788 { 1789 } 1790 #endif /* WLAN_ENABLE_AGEIE_ON_SCAN_RESULTS */ 1791 1792 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) || \ 1793 defined(CFG80211_INFORM_BSS_FRAME_DATA) 1794 /** 1795 * wlan_fill_per_chain_rssi() - fill per chain RSSI in inform bss 1796 * @data: bss data 1797 * @per_chain_snr: per chain RSSI 1798 * 1799 * Return: void 1800 */ 1801 #if defined(CFG80211_SCAN_PER_CHAIN_RSSI_SUPPORT) || \ 1802 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)) 1803 static void wlan_fill_per_chain_rssi(struct cfg80211_inform_bss *data, 1804 struct wlan_cfg80211_inform_bss *bss) 1805 { 1806 1807 uint32_t i; 1808 1809 if (!bss || !data) { 1810 cfg80211_err("Received bss is NULL"); 1811 return; 1812 } 1813 for (i = 0; i < WLAN_MGMT_TXRX_HOST_MAX_ANTENNA; i++) { 1814 if (!bss->per_chain_rssi[i] || 1815 (bss->per_chain_rssi[i] == WLAN_INVALID_PER_CHAIN_RSSI)) 1816 continue; 1817 data->chain_signal[i] = bss->per_chain_rssi[i]; 1818 data->chains |= BIT(i); 1819 } 1820 } 1821 #else 1822 static inline void 1823 wlan_fill_per_chain_rssi(struct cfg80211_inform_bss *data, 1824 struct wlan_cfg80211_inform_bss *bss) 1825 { 1826 } 1827 #endif 1828 1829 struct cfg80211_bss * 1830 wlan_cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 1831 struct wlan_cfg80211_inform_bss *bss) 1832 { 1833 struct cfg80211_inform_bss data = {0}; 1834 1835 if (!bss) { 1836 cfg80211_err("bss is null"); 1837 return NULL; 1838 } 1839 wlan_fill_per_chain_rssi(&data, bss); 1840 1841 data.chan = bss->chan; 1842 data.boottime_ns = bss->boottime_ns; 1843 data.signal = bss->rssi; 1844 return cfg80211_inform_bss_frame_data(wiphy, &data, bss->mgmt, 1845 bss->frame_len, GFP_ATOMIC); 1846 } 1847 #else 1848 struct cfg80211_bss * 1849 wlan_cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 1850 struct wlan_cfg80211_inform_bss *bss) 1851 1852 { 1853 return cfg80211_inform_bss_frame(wiphy, bss->chan, bss->mgmt, 1854 bss->frame_len, 1855 bss->rssi, GFP_ATOMIC); 1856 } 1857 #endif 1858 1859 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)) 1860 static inline void wlan_cfg80211_put_bss(struct wiphy *wiphy, 1861 struct cfg80211_bss *bss) 1862 { 1863 cfg80211_put_bss(wiphy, bss); 1864 } 1865 #else 1866 static inline void wlan_cfg80211_put_bss(struct wiphy *wiphy, 1867 struct cfg80211_bss *bss) 1868 { 1869 cfg80211_put_bss(bss); 1870 } 1871 #endif 1872 1873 void wlan_cfg80211_inform_bss_frame(struct wlan_objmgr_pdev *pdev, 1874 struct scan_cache_entry *scan_params) 1875 { 1876 struct pdev_osif_priv *pdev_ospriv = wlan_pdev_get_ospriv(pdev); 1877 struct wiphy *wiphy; 1878 struct cfg80211_bss *bss = NULL; 1879 struct wlan_cfg80211_inform_bss bss_data = {0}; 1880 1881 if (!pdev_ospriv) { 1882 cfg80211_err("os_priv is NULL"); 1883 return; 1884 } 1885 1886 wiphy = pdev_ospriv->wiphy; 1887 1888 bss_data.frame_len = wlan_get_frame_len(scan_params); 1889 bss_data.mgmt = qdf_mem_malloc_atomic(bss_data.frame_len); 1890 if (!bss_data.mgmt) { 1891 cfg80211_err("mem alloc failed for bss %pM seq %d", 1892 bss_data.mgmt->bssid, scan_params->seq_num); 1893 return; 1894 } 1895 qdf_mem_copy(bss_data.mgmt, 1896 util_scan_entry_frame_ptr(scan_params), 1897 util_scan_entry_frame_len(scan_params)); 1898 /* 1899 * Android does not want the timestamp from the frame. 1900 * Instead it wants a monotonic increasing value 1901 */ 1902 bss_data.mgmt->u.probe_resp.timestamp = qdf_get_monotonic_boottime(); 1903 wlan_add_age_ie((uint8_t *)bss_data.mgmt, scan_params); 1904 /* 1905 * Based on .ini configuration, raw rssi can be reported for bss. 1906 * Raw rssi is typically used for estimating power. 1907 */ 1908 bss_data.rssi = scan_params->rssi_raw; 1909 1910 bss_data.chan = wlan_get_ieee80211_channel(wiphy, pdev, 1911 scan_params->channel.chan_idx); 1912 if (!bss_data.chan) { 1913 cfg80211_err("Channel not found for bss %pM seq %d chan %d", 1914 bss_data.mgmt->bssid, scan_params->seq_num, 1915 scan_params->channel.chan_idx); 1916 qdf_mem_free(bss_data.mgmt); 1917 return; 1918 } 1919 1920 /* 1921 * Supplicant takes the signal strength in terms of 1922 * mBm (1 dBm = 100 mBm). 1923 */ 1924 bss_data.rssi = QDF_MIN(bss_data.rssi, 0) * 100; 1925 1926 bss_data.boottime_ns = scan_params->boottime_ns; 1927 1928 qdf_mem_copy(bss_data.per_chain_rssi, scan_params->per_chain_rssi, 1929 WLAN_MGMT_TXRX_HOST_MAX_ANTENNA); 1930 1931 bss = wlan_cfg80211_inform_bss_frame_data(wiphy, &bss_data); 1932 if (!bss) 1933 cfg80211_err("failed to inform bss %pM seq %d", 1934 bss_data.mgmt->bssid, scan_params->seq_num); 1935 else 1936 wlan_cfg80211_put_bss(wiphy, bss); 1937 1938 qdf_mem_free(bss_data.mgmt); 1939 } 1940 1941 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0) 1942 /* 1943 * wlan_scan_wiphy_set_max_sched_scans() - set maximum number of scheduled scans to 1944 * wiphy. 1945 * @wiphy: pointer to wiphy 1946 * @max_scans: max num scans to be configured 1947 * 1948 */ 1949 static inline void 1950 wlan_scan_wiphy_set_max_sched_scans(struct wiphy *wiphy, uint8_t max_scans) 1951 { 1952 if (max_scans == 0) 1953 wiphy->flags &= ~WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 1954 else 1955 wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 1956 } 1957 #else 1958 static inline void 1959 wlan_scan_wiphy_set_max_sched_scans(struct wiphy *wiphy, uint8_t max_scans) 1960 { 1961 wiphy->max_sched_scan_reqs = max_scans; 1962 } 1963 #endif /* KERNEL_VERSION(4, 12, 0) */ 1964 1965 #if defined(CFG80211_REPORT_BETTER_BSS_IN_SCHED_SCAN) || \ 1966 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)) 1967 void wlan_scan_cfg80211_add_connected_pno_support(struct wiphy *wiphy) 1968 { 1969 wiphy_ext_feature_set(wiphy, 1970 NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI); 1971 } 1972 #endif 1973 1974 #if ((LINUX_VERSION_CODE > KERNEL_VERSION(4, 4, 0)) || \ 1975 defined(CFG80211_MULTI_SCAN_PLAN_BACKPORT)) && \ 1976 defined(FEATURE_WLAN_SCAN_PNO) 1977 void wlan_config_sched_scan_plans_to_wiphy(struct wiphy *wiphy, 1978 struct wlan_objmgr_psoc *psoc) 1979 { 1980 if (ucfg_scan_get_pno_scan_support(psoc)) { 1981 wlan_scan_wiphy_set_max_sched_scans(wiphy, 1); 1982 wiphy->max_sched_scan_ssids = SCAN_PNO_MAX_SUPP_NETWORKS; 1983 wiphy->max_match_sets = SCAN_PNO_MAX_SUPP_NETWORKS; 1984 wiphy->max_sched_scan_ie_len = SCAN_MAX_IE_LENGTH; 1985 wiphy->max_sched_scan_plans = SCAN_PNO_MAX_PLAN_REQUEST; 1986 1987 /* 1988 * Exception: Using cfg_get() here because these two 1989 * schedule scan params are used only at this place 1990 * to copy to wiphy structure 1991 */ 1992 wiphy->max_sched_scan_plan_interval = 1993 cfg_get(psoc, CFG_MAX_SCHED_SCAN_PLAN_INTERVAL); 1994 1995 wiphy->max_sched_scan_plan_iterations = 1996 cfg_get(psoc, CFG_MAX_SCHED_SCAN_PLAN_ITERATIONS); 1997 } 1998 } 1999 #endif 2000