1 /* 2 * Copyright (c) 2017-2018 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: contains scan manager functionality 21 */ 22 23 #include <wlan_serialization_api.h> 24 #include <wlan_scan_ucfg_api.h> 25 #include <wlan_scan_tgt_api.h> 26 #include "wlan_scan_main.h" 27 #include "wlan_scan_manager.h" 28 #include "wlan_utility.h" 29 #ifdef FEATURE_WLAN_SCAN_PNO 30 #include <host_diag_core_event.h> 31 #endif 32 33 QDF_STATUS 34 scm_scan_free_scan_request_mem(struct scan_start_request *req) 35 { 36 void *ie; 37 38 if (!req) { 39 scm_err("null request"); 40 QDF_ASSERT(0); 41 return QDF_STATUS_E_FAILURE; 42 } 43 scm_info("freed scan request: 0x%pK, scan_id: %d, requester: %d", 44 req, req->scan_req.scan_id, req->scan_req.scan_req_id); 45 /* Free vendor(extra) ie */ 46 ie = req->scan_req.extraie.ptr; 47 if (ie) { 48 req->scan_req.extraie.ptr = NULL; 49 req->scan_req.extraie.len = 0; 50 qdf_mem_free(ie); 51 } 52 53 /* Free htcap ie */ 54 ie = req->scan_req.htcap.ptr; 55 if (ie) { 56 req->scan_req.htcap.len = 0; 57 req->scan_req.htcap.ptr = NULL; 58 qdf_mem_free(ie); 59 } 60 61 /* Free vhtcap ie */ 62 ie = req->scan_req.vhtcap.ptr; 63 if (ie) { 64 req->scan_req.vhtcap.len = 0; 65 req->scan_req.vhtcap.ptr = NULL; 66 qdf_mem_free(ie); 67 } 68 /* free scan_start_request memory */ 69 qdf_mem_free(req); 70 71 return QDF_STATUS_SUCCESS; 72 } 73 74 static QDF_STATUS 75 scm_scan_get_pdev_global_event_handlers(struct scan_event_listeners *listeners, 76 struct pdev_scan_ev_handler *pdev_ev_handler) 77 { 78 uint32_t i; 79 struct cb_handler *cb_handlers = &(pdev_ev_handler->cb_handlers[0]); 80 81 for (i = 0; i < MAX_SCAN_EVENT_HANDLERS_PER_PDEV; i++, cb_handlers++) { 82 if ((cb_handlers->func) && 83 (listeners->count < MAX_SCAN_EVENT_LISTENERS)) { 84 listeners->cb[listeners->count].func = 85 cb_handlers->func; 86 listeners->cb[listeners->count].arg = 87 cb_handlers->arg; 88 listeners->count++; 89 } 90 } 91 92 return QDF_STATUS_SUCCESS; 93 } 94 95 static QDF_STATUS 96 scm_scan_get_requester_event_handler(struct scan_event_listeners *listeners, 97 struct scan_requester_info *requesters, 98 wlan_scan_requester requester_id) 99 { 100 uint32_t idx; 101 struct cb_handler *ev_handler; 102 103 idx = requester_id & WLAN_SCAN_REQUESTER_ID_PREFIX; 104 if (idx != WLAN_SCAN_REQUESTER_ID_PREFIX) 105 return QDF_STATUS_SUCCESS; 106 107 idx = requester_id & WLAN_SCAN_REQUESTER_ID_MASK; 108 if (idx < WLAN_MAX_REQUESTORS) { 109 ev_handler = &(requesters[idx].ev_handler); 110 if (ev_handler->func) { 111 if (listeners->count < MAX_SCAN_EVENT_LISTENERS) { 112 listeners->cb[listeners->count].func = 113 ev_handler->func; 114 listeners->cb[listeners->count].arg = 115 ev_handler->arg; 116 listeners->count++; 117 } 118 } 119 return QDF_STATUS_SUCCESS; 120 } else { 121 scm_err("invalid requester id"); 122 return QDF_STATUS_E_INVAL; 123 } 124 125 } 126 127 static void scm_scan_post_event(struct wlan_objmgr_vdev *vdev, 128 struct scan_event *event) 129 { 130 uint32_t i = 0; 131 struct wlan_scan_obj *scan; 132 struct pdev_scan_ev_handler *pdev_ev_handler; 133 struct cb_handler *cb_handlers; 134 struct scan_requester_info *requesters; 135 struct scan_event_listeners *listeners; 136 137 if (!vdev || !event) { 138 scm_err("vdev: 0x%pK, event: 0x%pK", vdev, event); 139 return; 140 } 141 if (!event->requester) { 142 scm_err("invalid requester id"); 143 QDF_ASSERT(0); 144 } 145 scm_info("vdev: 0x%pK, event: 0x%pK", vdev, event); 146 147 scan = wlan_vdev_get_scan_obj(vdev); 148 pdev_ev_handler = wlan_vdev_get_pdev_scan_ev_handlers(vdev); 149 cb_handlers = &(pdev_ev_handler->cb_handlers[0]); 150 requesters = scan->requesters; 151 152 scm_info("vdev: %d, type: %d, reason: %d, freq: %d, req: %d, scanid: %d", 153 event->vdev_id, event->type, event->reason, event->chan_freq, 154 event->requester, event->scan_id); 155 156 listeners = qdf_mem_malloc(sizeof(*listeners)); 157 if (!listeners) { 158 scm_warn("couldn't allocate listeners list"); 159 return; 160 } 161 162 /* initialize number of listeners */ 163 listeners->count = 0; 164 165 /* 166 * Initiator of scan request decides which all scan events 167 * he is interested in and FW will send only those scan events 168 * to host driver. 169 * All the events received by scan module will be notified 170 * to all registered handlers. 171 */ 172 173 qdf_spin_lock_bh(&scan->lock); 174 /* find all global scan event handlers on this pdev */ 175 scm_scan_get_pdev_global_event_handlers(listeners, pdev_ev_handler); 176 /* find owner who triggered this scan request */ 177 scm_scan_get_requester_event_handler(listeners, requesters, 178 event->requester); 179 qdf_spin_unlock_bh(&scan->lock); 180 181 /* notify all interested handlers */ 182 for (i = 0; i < listeners->count; i++) { 183 scm_debug("func: 0x%pK, arg: 0x%pK", 184 listeners->cb[i].func, listeners->cb[i].arg); 185 listeners->cb[i].func(vdev, event, listeners->cb[i].arg); 186 } 187 qdf_mem_free(listeners); 188 } 189 190 static QDF_STATUS 191 scm_release_serialization_command(struct wlan_objmgr_vdev *vdev, 192 uint32_t scan_id) 193 { 194 struct wlan_serialization_queued_cmd_info cmd = {0}; 195 196 cmd.requestor = WLAN_UMAC_COMP_SCAN; 197 cmd.cmd_type = WLAN_SER_CMD_SCAN; 198 cmd.cmd_id = scan_id; 199 cmd.req_type = WLAN_SER_CANCEL_SINGLE_SCAN; 200 cmd.vdev = vdev; 201 cmd.queue_type = WLAN_SERIALIZATION_ACTIVE_QUEUE; 202 203 /* Inform serialization for command completion */ 204 wlan_serialization_remove_cmd(&cmd); 205 206 return QDF_STATUS_SUCCESS; 207 } 208 209 static QDF_STATUS 210 scm_post_internal_scan_complete_event(struct scan_start_request *req, 211 enum scan_completion_reason reason) 212 { 213 struct scan_event event = {0, }; 214 215 /* prepare internal scan complete event */ 216 event.type = SCAN_EVENT_TYPE_COMPLETED; 217 event.reason = reason; 218 event.chan_freq = 0; /* Invalid frequency */ 219 event.vdev_id = req->scan_req.vdev_id; 220 event.requester = req->scan_req.scan_req_id; 221 event.scan_id = req->scan_req.scan_id; 222 /* Fill scan_start_request used to trigger this scan */ 223 event.scan_start_req = req; 224 /* post scan event to registered handlers */ 225 scm_scan_post_event(req->vdev, &event); 226 227 return QDF_STATUS_SUCCESS; 228 } 229 230 static inline struct pdev_scan_info * 231 scm_scan_get_pdev_priv_info(uint8_t pdev_id, struct wlan_scan_obj *scan_obj) 232 { 233 return &scan_obj->pdev_info[pdev_id]; 234 } 235 236 static QDF_STATUS 237 scm_update_last_scan_time(struct scan_start_request *req) 238 { 239 uint8_t pdev_id; 240 struct wlan_scan_obj *scan_obj; 241 struct pdev_scan_info *pdev_scan_info; 242 243 scan_obj = wlan_vdev_get_scan_obj(req->vdev); 244 pdev_id = wlan_scan_vdev_get_pdev_id(req->vdev); 245 pdev_scan_info = scm_scan_get_pdev_priv_info(pdev_id, scan_obj); 246 /* update last scan start time */ 247 pdev_scan_info->last_scan_time = qdf_system_ticks(); 248 249 return QDF_STATUS_SUCCESS; 250 } 251 252 static QDF_STATUS 253 scm_activate_scan_request(struct scan_start_request *req) 254 { 255 QDF_STATUS status; 256 257 status = tgt_scan_start(req); 258 if (status != QDF_STATUS_SUCCESS) { 259 scm_err("tgt_scan_start failed, status: %d", status); 260 /* scan could not be started and hence 261 * we will not receive any completions. 262 * post scan cancelled 263 */ 264 scm_post_internal_scan_complete_event(req, 265 SCAN_REASON_CANCELLED); 266 return status; 267 } 268 /* save last scan start time */ 269 status = scm_update_last_scan_time(req); 270 271 return status; 272 } 273 274 static QDF_STATUS 275 scm_cancel_scan_request(struct scan_start_request *req) 276 { 277 struct scan_cancel_request cancel_req = {0, }; 278 QDF_STATUS status; 279 280 cancel_req.vdev = req->vdev; 281 cancel_req.cancel_req.scan_id = req->scan_req.scan_id; 282 cancel_req.cancel_req.requester = req->scan_req.scan_req_id; 283 cancel_req.cancel_req.req_type = WLAN_SCAN_CANCEL_SINGLE; 284 cancel_req.cancel_req.vdev_id = req->scan_req.vdev_id; 285 /* send scan cancel to fw */ 286 status = tgt_scan_cancel(&cancel_req); 287 if (status != QDF_STATUS_SUCCESS) 288 scm_err("tgt_scan_cancel failed: status: %d, scanid: %d", 289 status, req->scan_req.scan_id); 290 /* notify event handler about scan cancellation */ 291 scm_post_internal_scan_complete_event(req, SCAN_REASON_CANCELLED); 292 293 return status; 294 } 295 296 static QDF_STATUS 297 scm_scan_serialize_callback(struct wlan_serialization_command *cmd, 298 enum wlan_serialization_cb_reason reason) 299 { 300 struct scan_start_request *req; 301 QDF_STATUS status; 302 303 if (!cmd) { 304 scm_err("cmd is NULL, reason: %d", reason); 305 QDF_ASSERT(0); 306 return QDF_STATUS_E_NULL_VALUE; 307 } 308 309 if (!cmd->umac_cmd) { 310 scm_err("cmd->umac_cmd is NULL , reason: %d", reason); 311 QDF_ASSERT(0); 312 return QDF_STATUS_E_NULL_VALUE; 313 } 314 315 req = cmd->umac_cmd; 316 scm_debug("reason:%d, reqid:%d, scanid:%d, vdevid:%d, vdev:0x%pK", 317 reason, req->scan_req.scan_req_id, req->scan_req.scan_id, 318 req->scan_req.vdev_id, req->vdev); 319 320 if (!req->vdev) { 321 scm_err("NULL vdev. req:0x%pK, reason:%d\n", req, reason); 322 QDF_ASSERT(0); 323 return QDF_STATUS_E_NULL_VALUE; 324 } 325 326 switch (reason) { 327 case WLAN_SER_CB_ACTIVATE_CMD: 328 /* command moved to active list 329 * modify the params if required for concurency case. 330 */ 331 status = scm_activate_scan_request(req); 332 break; 333 334 case WLAN_SER_CB_CANCEL_CMD: 335 /* command removed from pending list. 336 * notify registered scan event handlers with 337 * status completed and reason cancelled. 338 */ 339 status = scm_post_internal_scan_complete_event(req, 340 SCAN_REASON_CANCELLED); 341 break; 342 343 case WLAN_SER_CB_ACTIVE_CMD_TIMEOUT: 344 /* active command timed out. 345 * prepare internal scan cancel request 346 */ 347 status = scm_cancel_scan_request(req); 348 break; 349 350 case WLAN_SER_CB_RELEASE_MEM_CMD: 351 /* command successfully completed. 352 * Release vdev reference and free scan_start_request memory 353 */ 354 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 355 status = scm_scan_free_scan_request_mem(req); 356 break; 357 358 default: 359 /* Do nothing but logging */ 360 QDF_ASSERT(0); 361 status = QDF_STATUS_E_INVAL; 362 break; 363 } 364 365 return status; 366 } 367 368 QDF_STATUS 369 scm_scan_start_req(struct scheduler_msg *msg) 370 { 371 struct wlan_serialization_command cmd = {0, }; 372 enum wlan_serialization_status ser_cmd_status; 373 struct scan_start_request *req; 374 struct wlan_scan_obj *scan_obj; 375 QDF_STATUS status = QDF_STATUS_SUCCESS; 376 377 if (!msg) { 378 scm_err("msg received is NULL"); 379 QDF_ASSERT(0); 380 return QDF_STATUS_E_NULL_VALUE; 381 } 382 if (!msg->bodyptr) { 383 scm_err("bodyptr is NULL"); 384 QDF_ASSERT(0); 385 return QDF_STATUS_E_NULL_VALUE; 386 } 387 388 req = msg->bodyptr; 389 scan_obj = wlan_vdev_get_scan_obj(req->vdev); 390 if (!scan_obj) { 391 scm_debug("Couldn't find scan object"); 392 return QDF_STATUS_E_NULL_VALUE; 393 } 394 395 cmd.cmd_type = WLAN_SER_CMD_SCAN; 396 cmd.cmd_id = req->scan_req.scan_id; 397 cmd.cmd_cb = (wlan_serialization_cmd_callback) 398 scm_scan_serialize_callback; 399 cmd.umac_cmd = req; 400 cmd.source = WLAN_UMAC_COMP_SCAN; 401 cmd.is_high_priority = false; 402 cmd.cmd_timeout_duration = req->scan_req.max_scan_time + 403 SCAN_TIMEOUT_GRACE_PERIOD; 404 cmd.vdev = req->vdev; 405 406 if (scan_obj->disable_timeout) 407 cmd.cmd_timeout_duration = 0; 408 409 scm_info("req: 0x%pK, reqid: %d, scanid: %d, vdevid: %d", 410 req, req->scan_req.scan_req_id, req->scan_req.scan_id, 411 req->scan_req.vdev_id); 412 413 ser_cmd_status = wlan_serialization_request(&cmd); 414 scm_info("wlan_serialization_request status:%d", ser_cmd_status); 415 416 switch (ser_cmd_status) { 417 case WLAN_SER_CMD_PENDING: 418 /* command moved to pending list.Do nothing */ 419 break; 420 case WLAN_SER_CMD_ACTIVE: 421 /* command moved to active list. Do nothing */ 422 break; 423 case WLAN_SER_CMD_DENIED_LIST_FULL: 424 case WLAN_SER_CMD_DENIED_RULES_FAILED: 425 case WLAN_SER_CMD_DENIED_UNSPECIFIED: 426 /* notify registered scan event handlers 427 * about internal error 428 */ 429 scm_post_internal_scan_complete_event(req, 430 SCAN_REASON_INTERNAL_FAILURE); 431 /* cmd can't be serviced. 432 * release vdev reference and free scan_start_request memory 433 */ 434 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 435 scm_scan_free_scan_request_mem(req); 436 break; 437 default: 438 QDF_ASSERT(0); 439 status = QDF_STATUS_E_INVAL; 440 /* cmd can't be serviced. 441 * release vdev reference and free scan_start_request memory 442 */ 443 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 444 scm_scan_free_scan_request_mem(req); 445 break; 446 } 447 448 return status; 449 } 450 451 static inline enum wlan_serialization_cancel_type 452 get_serialization_cancel_type(enum scan_cancel_req_type type) 453 { 454 enum wlan_serialization_cancel_type serialization_type; 455 456 switch (type) { 457 case WLAN_SCAN_CANCEL_SINGLE: 458 serialization_type = WLAN_SER_CANCEL_SINGLE_SCAN; 459 break; 460 case WLAN_SCAN_CANCEL_VDEV_ALL: 461 serialization_type = WLAN_SER_CANCEL_VDEV_SCANS; 462 break; 463 case WLAN_SCAN_CANCEL_PDEV_ALL: 464 serialization_type = WLAN_SER_CANCEL_PDEV_SCANS; 465 break; 466 default: 467 QDF_ASSERT(0); 468 scm_warn("invalid scan_cancel_req_type: %d", type); 469 serialization_type = WLAN_SER_CANCEL_PDEV_SCANS; 470 break; 471 } 472 473 return serialization_type; 474 } 475 476 QDF_STATUS 477 scm_scan_cancel_req(struct scheduler_msg *msg) 478 { 479 struct wlan_serialization_queued_cmd_info cmd = {0,}; 480 struct wlan_serialization_command ser_cmd = {0,}; 481 enum wlan_serialization_cmd_status ser_cmd_status; 482 struct scan_cancel_request *req; 483 QDF_STATUS status = QDF_STATUS_SUCCESS; 484 485 if (!msg) { 486 scm_err("msg received is NULL"); 487 QDF_ASSERT(0); 488 return QDF_STATUS_E_NULL_VALUE; 489 } 490 if (!msg->bodyptr) { 491 scm_err("Bodyptr is NULL"); 492 QDF_ASSERT(0); 493 return QDF_STATUS_E_NULL_VALUE; 494 } 495 496 req = msg->bodyptr; 497 /* 498 * If requester wants to wait for target scan cancel event 499 * instead of internally generated cancel event, just check 500 * which queue this scan request belongs to and send scan 501 * cancel request to FW accordingly. 502 * Else generate internal scan cancel event and notify 503 * handlers and free scan request resources. 504 */ 505 if (req->wait_tgt_cancel && 506 (req->cancel_req.req_type == WLAN_SCAN_CANCEL_SINGLE)) { 507 ser_cmd.cmd_type = WLAN_SER_CMD_SCAN; 508 ser_cmd.cmd_id = req->cancel_req.scan_id; 509 ser_cmd.cmd_cb = NULL; 510 ser_cmd.umac_cmd = NULL; 511 ser_cmd.source = WLAN_UMAC_COMP_SCAN; 512 ser_cmd.is_high_priority = false; 513 ser_cmd.vdev = req->vdev; 514 if (wlan_serialization_is_cmd_present_in_active_queue(NULL, &ser_cmd)) 515 ser_cmd_status = WLAN_SER_CMD_IN_ACTIVE_LIST; 516 else if (wlan_serialization_is_cmd_present_in_pending_queue(NULL, &ser_cmd)) 517 ser_cmd_status = WLAN_SER_CMD_IN_PENDING_LIST; 518 else 519 ser_cmd_status = WLAN_SER_CMD_NOT_FOUND; 520 } else { 521 cmd.requestor = 0; 522 cmd.cmd_type = WLAN_SER_CMD_SCAN; 523 cmd.cmd_id = req->cancel_req.scan_id; 524 cmd.vdev = req->vdev; 525 cmd.queue_type = WLAN_SERIALIZATION_ACTIVE_QUEUE | 526 WLAN_SERIALIZATION_PENDING_QUEUE; 527 cmd.req_type = get_serialization_cancel_type(req->cancel_req.req_type); 528 529 ser_cmd_status = wlan_serialization_cancel_request(&cmd); 530 } 531 532 scm_debug("status: %d, reqid: %d, scanid: %d, vdevid: %d, type: %d", 533 ser_cmd_status, req->cancel_req.requester, 534 req->cancel_req.scan_id, req->cancel_req.vdev_id, 535 req->cancel_req.req_type); 536 537 switch (ser_cmd_status) { 538 case WLAN_SER_CMD_IN_PENDING_LIST: 539 /* do nothing */ 540 break; 541 case WLAN_SER_CMD_IN_ACTIVE_LIST: 542 case WLAN_SER_CMDS_IN_ALL_LISTS: 543 /* send wmi scan cancel to fw */ 544 status = tgt_scan_cancel(req); 545 break; 546 case WLAN_SER_CMD_NOT_FOUND: 547 /* do nothing */ 548 break; 549 default: 550 QDF_ASSERT(0); 551 status = QDF_STATUS_E_INVAL; 552 break; 553 } 554 555 /* Release vdev reference and scan cancel request 556 * processing is complete 557 */ 558 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 559 /* Free cancel request memory */ 560 qdf_mem_free(req); 561 562 return status; 563 } 564 565 #ifdef FEATURE_WLAN_SCAN_PNO 566 static QDF_STATUS 567 scm_pno_event_handler(struct wlan_objmgr_vdev *vdev, 568 struct scan_event *event) 569 { 570 struct scan_vdev_obj *scan_vdev_obj; 571 struct wlan_scan_obj *scan_psoc_obj; 572 scan_event_handler pno_cb; 573 void *cb_arg; 574 575 scan_vdev_obj = wlan_get_vdev_scan_obj(vdev); 576 scan_psoc_obj = wlan_vdev_get_scan_obj(vdev); 577 if (!scan_vdev_obj || !scan_psoc_obj) { 578 scm_err("null scan_vdev_obj %pK scan_obj %pK", 579 scan_vdev_obj, scan_psoc_obj); 580 return QDF_STATUS_E_INVAL; 581 } 582 583 switch (event->type) { 584 case SCAN_EVENT_TYPE_NLO_COMPLETE: 585 if (!scan_vdev_obj->pno_match_evt_received) 586 return QDF_STATUS_SUCCESS; 587 qdf_wake_lock_release(&scan_psoc_obj->pno_cfg.pno_wake_lock, 588 WIFI_POWER_EVENT_WAKELOCK_PNO); 589 qdf_wake_lock_timeout_acquire( 590 &scan_psoc_obj->pno_cfg.pno_wake_lock, 591 SCAN_PNO_SCAN_COMPLETE_WAKE_LOCK_TIMEOUT); 592 scan_vdev_obj->pno_match_evt_received = false; 593 break; 594 case SCAN_EVENT_TYPE_NLO_MATCH: 595 scan_vdev_obj->pno_match_evt_received = true; 596 qdf_wake_lock_timeout_acquire( 597 &scan_psoc_obj->pno_cfg.pno_wake_lock, 598 SCAN_PNO_MATCH_WAKE_LOCK_TIMEOUT); 599 return QDF_STATUS_SUCCESS; 600 default: 601 return QDF_STATUS_E_INVAL; 602 } 603 qdf_spin_lock_bh(&scan_psoc_obj->lock); 604 pno_cb = scan_psoc_obj->pno_cfg.pno_cb.func; 605 cb_arg = scan_psoc_obj->pno_cfg.pno_cb.arg; 606 qdf_spin_unlock_bh(&scan_psoc_obj->lock); 607 608 if (pno_cb) 609 pno_cb(vdev, event, cb_arg); 610 611 return QDF_STATUS_SUCCESS; 612 } 613 #else 614 615 static QDF_STATUS 616 scm_pno_event_handler(struct wlan_objmgr_vdev *vdev, 617 struct scan_event *event) 618 { 619 return QDF_STATUS_SUCCESS; 620 } 621 #endif 622 623 /** 624 * scm_scan_update_scan_event() - update scan event 625 * @scan: scan object 626 * @event: scan event 627 * @scan_start_req: scan_start_req used for triggering scan 628 * 629 * update scan params in scan event 630 * 631 * Return: QDF_STATUS 632 */ 633 static QDF_STATUS 634 scm_scan_update_scan_event(struct wlan_scan_obj *scan, 635 struct scan_event *event, 636 struct scan_start_request *scan_start_req) 637 { 638 if (!event) 639 return QDF_STATUS_E_NULL_VALUE; 640 641 if (!scan || !scan_start_req) { 642 event->scan_start_req = NULL; 643 return QDF_STATUS_E_NULL_VALUE; 644 } 645 /* copy scan start request to pass back buffer */ 646 qdf_mem_copy(&scan->scan_start_request_buff, scan_start_req, 647 sizeof(struct scan_start_request)); 648 /* reset all pointers */ 649 scan->scan_start_request_buff.scan_req.extraie.ptr = NULL; 650 scan->scan_start_request_buff.scan_req.extraie.len = 0; 651 scan->scan_start_request_buff.scan_req.htcap.ptr = NULL; 652 scan->scan_start_request_buff.scan_req.htcap.len = 0; 653 scan->scan_start_request_buff.scan_req.vhtcap.ptr = NULL; 654 scan->scan_start_request_buff.scan_req.vhtcap.len = 0; 655 656 event->scan_start_req = &scan->scan_start_request_buff; 657 658 return QDF_STATUS_SUCCESS; 659 } 660 661 QDF_STATUS 662 scm_scan_event_handler(struct scheduler_msg *msg) 663 { 664 struct wlan_objmgr_vdev *vdev; 665 struct scan_event *event; 666 struct scan_event_info *event_info; 667 struct wlan_serialization_command cmd = {0,}; 668 struct wlan_serialization_command *queued_cmd; 669 struct scan_start_request *scan_start_req; 670 struct wlan_scan_obj *scan; 671 672 if (!msg) { 673 scm_err("NULL msg received "); 674 QDF_ASSERT(0); 675 return QDF_STATUS_E_NULL_VALUE; 676 } 677 if (!msg->bodyptr) { 678 scm_err("NULL scan event received"); 679 QDF_ASSERT(0); 680 return QDF_STATUS_E_NULL_VALUE; 681 } 682 683 event_info = msg->bodyptr; 684 vdev = event_info->vdev; 685 event = &(event_info->event); 686 687 scm_info("vdevid:%d, type:%d, reason:%d, freq:%d, reqstr:%d, scanid:%d", 688 event->vdev_id, event->type, event->reason, event->chan_freq, 689 event->requester, event->scan_id); 690 /* 691 * NLO requests are never queued, so post NLO events 692 * without checking for their presence in active queue. 693 */ 694 switch (event->type) { 695 case SCAN_EVENT_TYPE_NLO_COMPLETE: 696 case SCAN_EVENT_TYPE_NLO_MATCH: 697 scm_pno_event_handler(vdev, event); 698 goto exit; 699 default: 700 break; 701 } 702 703 cmd.cmd_type = WLAN_SER_CMD_SCAN; 704 cmd.cmd_id = event->scan_id; 705 cmd.cmd_cb = NULL; 706 cmd.umac_cmd = NULL; 707 cmd.source = WLAN_UMAC_COMP_SCAN; 708 cmd.is_high_priority = false; 709 cmd.vdev = vdev; 710 if (!wlan_serialization_is_cmd_present_in_active_queue(NULL, &cmd)) { 711 /* 712 * We received scan event for an already completed/cancelled 713 * scan request. Drop this event. 714 */ 715 scm_warn("Received scan event while request not in active queue"); 716 goto exit; 717 } 718 719 /* Fill scan_start_request used to trigger this scan */ 720 queued_cmd = wlan_serialization_get_scan_cmd_using_scan_id( 721 wlan_vdev_get_psoc(vdev), wlan_vdev_get_id(vdev), 722 event->scan_id, true); 723 724 if (!queued_cmd) { 725 scm_err("NULL queued_cmd"); 726 goto exit; 727 } 728 if (!queued_cmd->umac_cmd) { 729 scm_err("NULL umac_cmd"); 730 goto exit; 731 } 732 scan_start_req = queued_cmd->umac_cmd; 733 734 if (scan_start_req->scan_req.scan_req_id != event->requester) { 735 scm_err("req ID mismatch, scan_req_id:%d, event_req_id:%d", 736 scan_start_req->scan_req.scan_req_id, 737 event->requester); 738 goto exit; 739 } 740 741 scan = wlan_vdev_get_scan_obj(vdev); 742 if (scan) 743 scm_scan_update_scan_event(scan, event, scan_start_req); 744 745 switch (event->type) { 746 case SCAN_EVENT_TYPE_COMPLETED: 747 scm_11d_decide_country_code(vdev); 748 /* fall through to release the command */ 749 case SCAN_EVENT_TYPE_START_FAILED: 750 case SCAN_EVENT_TYPE_DEQUEUED: 751 scm_release_serialization_command(vdev, event->scan_id); 752 break; 753 default: 754 break; 755 } 756 757 /* Notify all interested parties */ 758 scm_scan_post_event(vdev, event); 759 760 exit: 761 /* free event info memory */ 762 qdf_mem_free(event_info); 763 wlan_objmgr_vdev_release_ref(vdev, WLAN_SCAN_ID); 764 765 return QDF_STATUS_SUCCESS; 766 } 767 768 QDF_STATUS scm_scan_event_flush_callback(struct scheduler_msg *msg) 769 { 770 struct wlan_objmgr_vdev *vdev; 771 struct scan_event_info *event_info; 772 773 if (!msg || !msg->bodyptr) { 774 scm_err("msg or msg->bodyptr is NULL"); 775 return QDF_STATUS_E_NULL_VALUE; 776 } 777 778 event_info = msg->bodyptr; 779 vdev = event_info->vdev; 780 781 /* free event info memory */ 782 qdf_mem_free(event_info); 783 wlan_objmgr_vdev_release_ref(vdev, WLAN_SCAN_ID); 784 785 return QDF_STATUS_SUCCESS; 786 } 787 788 QDF_STATUS scm_bcn_probe_flush_callback(struct scheduler_msg *msg) 789 { 790 struct scan_bcn_probe_event *bcn; 791 792 bcn = msg->bodyptr; 793 794 if (!bcn) { 795 scm_err("bcn is NULL"); 796 return QDF_STATUS_E_NULL_VALUE; 797 } 798 if (bcn->psoc) 799 wlan_objmgr_psoc_release_ref(bcn->psoc, WLAN_SCAN_ID); 800 if (bcn->rx_data) 801 qdf_mem_free(bcn->rx_data); 802 if (bcn->buf) 803 qdf_nbuf_free(bcn->buf); 804 qdf_mem_free(bcn); 805 806 return QDF_STATUS_SUCCESS; 807 } 808 809 QDF_STATUS scm_scan_start_flush_callback(struct scheduler_msg *msg) 810 { 811 struct scan_start_request *req; 812 813 if (!msg || !msg->bodyptr) { 814 scm_err("msg or msg->bodyptr is NULL"); 815 return QDF_STATUS_E_NULL_VALUE; 816 } 817 818 req = msg->bodyptr; 819 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 820 scm_scan_free_scan_request_mem(req); 821 822 return QDF_STATUS_SUCCESS; 823 } 824 825 QDF_STATUS scm_scan_cancel_flush_callback(struct scheduler_msg *msg) 826 { 827 struct scan_cancel_request *req; 828 829 if (!msg || !msg->bodyptr) { 830 scm_err("msg or msg->bodyptr is NULL"); 831 return QDF_STATUS_E_NULL_VALUE; 832 } 833 834 req = msg->bodyptr; 835 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 836 /* Free cancel request memory */ 837 qdf_mem_free(req); 838 839 return QDF_STATUS_SUCCESS; 840 } 841