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_debug("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 scan = wlan_vdev_get_scan_obj(vdev); 146 pdev_ev_handler = wlan_vdev_get_pdev_scan_ev_handlers(vdev); 147 cb_handlers = &(pdev_ev_handler->cb_handlers[0]); 148 requesters = scan->requesters; 149 150 scm_debug("vdev: %d, type: %d, reason: %d, freq: %d, req: %d, scanid: %d", 151 event->vdev_id, event->type, event->reason, event->chan_freq, 152 event->requester, event->scan_id); 153 154 listeners = qdf_mem_malloc_atomic(sizeof(*listeners)); 155 if (!listeners) { 156 scm_warn("couldn't allocate listeners list"); 157 return; 158 } 159 160 /* initialize number of listeners */ 161 listeners->count = 0; 162 163 /* 164 * Initiator of scan request decides which all scan events 165 * he is interested in and FW will send only those scan events 166 * to host driver. 167 * All the events received by scan module will be notified 168 * to all registered handlers. 169 */ 170 171 qdf_spin_lock_bh(&scan->lock); 172 /* find all global scan event handlers on this pdev */ 173 scm_scan_get_pdev_global_event_handlers(listeners, pdev_ev_handler); 174 /* find owner who triggered this scan request */ 175 scm_scan_get_requester_event_handler(listeners, requesters, 176 event->requester); 177 qdf_spin_unlock_bh(&scan->lock); 178 179 /* notify all interested handlers */ 180 for (i = 0; i < listeners->count; i++) { 181 scm_debug("func: 0x%pK, arg: 0x%pK", 182 listeners->cb[i].func, listeners->cb[i].arg); 183 listeners->cb[i].func(vdev, event, listeners->cb[i].arg); 184 } 185 qdf_mem_free(listeners); 186 } 187 188 static QDF_STATUS 189 scm_release_serialization_command(struct wlan_objmgr_vdev *vdev, 190 uint32_t scan_id) 191 { 192 struct wlan_serialization_queued_cmd_info cmd = {0}; 193 194 cmd.requestor = WLAN_UMAC_COMP_SCAN; 195 cmd.cmd_type = WLAN_SER_CMD_SCAN; 196 cmd.cmd_id = scan_id; 197 cmd.req_type = WLAN_SER_CANCEL_SINGLE_SCAN; 198 cmd.vdev = vdev; 199 cmd.queue_type = WLAN_SERIALIZATION_ACTIVE_QUEUE; 200 201 /* Inform serialization for command completion */ 202 wlan_serialization_remove_cmd(&cmd); 203 204 return QDF_STATUS_SUCCESS; 205 } 206 207 static QDF_STATUS 208 scm_post_internal_scan_complete_event(struct scan_start_request *req, 209 enum scan_completion_reason reason) 210 { 211 struct scan_event event = {0, }; 212 213 /* prepare internal scan complete event */ 214 event.type = SCAN_EVENT_TYPE_COMPLETED; 215 event.reason = reason; 216 event.chan_freq = 0; /* Invalid frequency */ 217 event.vdev_id = req->scan_req.vdev_id; 218 event.requester = req->scan_req.scan_req_id; 219 event.scan_id = req->scan_req.scan_id; 220 /* Fill scan_start_request used to trigger this scan */ 221 event.scan_start_req = req; 222 /* post scan event to registered handlers */ 223 scm_scan_post_event(req->vdev, &event); 224 225 return QDF_STATUS_SUCCESS; 226 } 227 228 static inline struct pdev_scan_info * 229 scm_scan_get_pdev_priv_info(uint8_t pdev_id, struct wlan_scan_obj *scan_obj) 230 { 231 return &scan_obj->pdev_info[pdev_id]; 232 } 233 234 static QDF_STATUS 235 scm_update_last_scan_time(struct scan_start_request *req) 236 { 237 uint8_t pdev_id; 238 struct wlan_scan_obj *scan_obj; 239 struct pdev_scan_info *pdev_scan_info; 240 241 scan_obj = wlan_vdev_get_scan_obj(req->vdev); 242 pdev_id = wlan_scan_vdev_get_pdev_id(req->vdev); 243 pdev_scan_info = scm_scan_get_pdev_priv_info(pdev_id, scan_obj); 244 /* update last scan start time */ 245 pdev_scan_info->last_scan_time = qdf_system_ticks(); 246 247 return QDF_STATUS_SUCCESS; 248 } 249 250 static QDF_STATUS 251 scm_activate_scan_request(struct scan_start_request *req) 252 { 253 QDF_STATUS status; 254 255 status = tgt_scan_start(req); 256 if (status != QDF_STATUS_SUCCESS) { 257 scm_err("tgt_scan_start failed, status: %d", status); 258 /* scan could not be started and hence 259 * we will not receive any completions. 260 * post scan cancelled 261 */ 262 scm_post_internal_scan_complete_event(req, 263 SCAN_REASON_CANCELLED); 264 return status; 265 } 266 /* save last scan start time */ 267 status = scm_update_last_scan_time(req); 268 269 return status; 270 } 271 272 static QDF_STATUS 273 scm_cancel_scan_request(struct scan_start_request *req) 274 { 275 struct scan_cancel_request cancel_req = {0, }; 276 QDF_STATUS status; 277 278 cancel_req.vdev = req->vdev; 279 cancel_req.cancel_req.scan_id = req->scan_req.scan_id; 280 cancel_req.cancel_req.requester = req->scan_req.scan_req_id; 281 cancel_req.cancel_req.req_type = WLAN_SCAN_CANCEL_SINGLE; 282 cancel_req.cancel_req.vdev_id = req->scan_req.vdev_id; 283 /* send scan cancel to fw */ 284 status = tgt_scan_cancel(&cancel_req); 285 if (status != QDF_STATUS_SUCCESS) 286 scm_err("tgt_scan_cancel failed: status: %d, scanid: %d", 287 status, req->scan_req.scan_id); 288 /* notify event handler about scan cancellation */ 289 scm_post_internal_scan_complete_event(req, SCAN_REASON_CANCELLED); 290 291 return status; 292 } 293 294 static QDF_STATUS 295 scm_scan_serialize_callback(struct wlan_serialization_command *cmd, 296 enum wlan_serialization_cb_reason reason) 297 { 298 struct scan_start_request *req; 299 QDF_STATUS status; 300 301 if (!cmd) { 302 scm_err("cmd is NULL, reason: %d", reason); 303 QDF_ASSERT(0); 304 return QDF_STATUS_E_NULL_VALUE; 305 } 306 307 if (!cmd->umac_cmd) { 308 scm_err("cmd->umac_cmd is NULL , reason: %d", reason); 309 QDF_ASSERT(0); 310 return QDF_STATUS_E_NULL_VALUE; 311 } 312 313 req = cmd->umac_cmd; 314 scm_debug("reason:%d, reqid:%d, scanid:%d, vdevid:%d, vdev:0x%pK", 315 reason, req->scan_req.scan_req_id, req->scan_req.scan_id, 316 req->scan_req.vdev_id, req->vdev); 317 318 if (!req->vdev) { 319 scm_err("NULL vdev. req:0x%pK, reason:%d\n", req, reason); 320 QDF_ASSERT(0); 321 return QDF_STATUS_E_NULL_VALUE; 322 } 323 324 switch (reason) { 325 case WLAN_SER_CB_ACTIVATE_CMD: 326 /* command moved to active list 327 * modify the params if required for concurency case. 328 */ 329 status = scm_activate_scan_request(req); 330 break; 331 332 case WLAN_SER_CB_CANCEL_CMD: 333 /* command removed from pending list. 334 * notify registered scan event handlers with 335 * status completed and reason cancelled. 336 */ 337 status = scm_post_internal_scan_complete_event(req, 338 SCAN_REASON_CANCELLED); 339 break; 340 341 case WLAN_SER_CB_ACTIVE_CMD_TIMEOUT: 342 /* active command timed out. 343 * prepare internal scan cancel request 344 */ 345 status = scm_cancel_scan_request(req); 346 break; 347 348 case WLAN_SER_CB_RELEASE_MEM_CMD: 349 /* command successfully completed. 350 * Release vdev reference and free scan_start_request memory 351 */ 352 cmd->umac_cmd = NULL; 353 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 354 status = scm_scan_free_scan_request_mem(req); 355 break; 356 357 default: 358 /* Do nothing but logging */ 359 QDF_ASSERT(0); 360 status = QDF_STATUS_E_INVAL; 361 break; 362 } 363 364 return status; 365 } 366 367 QDF_STATUS 368 scm_scan_start_req(struct scheduler_msg *msg) 369 { 370 struct wlan_serialization_command cmd = {0, }; 371 enum wlan_serialization_status ser_cmd_status; 372 struct scan_start_request *req = NULL; 373 struct wlan_scan_obj *scan_obj; 374 struct scan_vdev_obj *scan_vdev_priv_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 status = QDF_STATUS_E_NULL_VALUE; 393 goto err; 394 } 395 396 cmd.cmd_type = WLAN_SER_CMD_SCAN; 397 cmd.cmd_id = req->scan_req.scan_id; 398 cmd.cmd_cb = (wlan_serialization_cmd_callback) 399 scm_scan_serialize_callback; 400 cmd.umac_cmd = req; 401 cmd.source = WLAN_UMAC_COMP_SCAN; 402 cmd.is_high_priority = false; 403 cmd.cmd_timeout_duration = req->scan_req.max_scan_time + 404 SCAN_TIMEOUT_GRACE_PERIOD; 405 cmd.vdev = req->vdev; 406 407 if (scan_obj->disable_timeout) 408 cmd.cmd_timeout_duration = 0; 409 410 scm_debug("req: 0x%pK, reqid: %d, scanid: %d, vdevid: %d", 411 req, req->scan_req.scan_req_id, req->scan_req.scan_id, 412 req->scan_req.vdev_id); 413 414 scan_vdev_priv_obj = wlan_get_vdev_scan_obj(req->vdev); 415 if (!scan_vdev_priv_obj) { 416 scm_debug("Couldn't find scan priv object"); 417 status = QDF_STATUS_E_NULL_VALUE; 418 goto err; 419 } 420 if (scan_vdev_priv_obj->is_vdev_delete_in_progress) { 421 scm_err("Can't allow scan on vdev_id:%d", 422 wlan_vdev_get_id(req->vdev)); 423 status = QDF_STATUS_E_NULL_VALUE; 424 goto err; 425 } 426 ser_cmd_status = wlan_serialization_request(&cmd); 427 scm_debug("wlan_serialization_request status:%d", ser_cmd_status); 428 429 switch (ser_cmd_status) { 430 case WLAN_SER_CMD_PENDING: 431 /* command moved to pending list.Do nothing */ 432 break; 433 case WLAN_SER_CMD_ACTIVE: 434 /* command moved to active list. Do nothing */ 435 break; 436 case WLAN_SER_CMD_DENIED_LIST_FULL: 437 case WLAN_SER_CMD_DENIED_RULES_FAILED: 438 case WLAN_SER_CMD_DENIED_UNSPECIFIED: 439 /* notify registered scan event handlers 440 * about internal error 441 */ 442 scm_post_internal_scan_complete_event(req, 443 SCAN_REASON_INTERNAL_FAILURE); 444 goto err; 445 default: 446 QDF_ASSERT(0); 447 status = QDF_STATUS_E_INVAL; 448 goto err; 449 } 450 451 return status; 452 err: 453 /* 454 * cmd can't be serviced. 455 * release vdev reference and free scan_start_request memory 456 */ 457 if (req) { 458 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 459 scm_scan_free_scan_request_mem(req); 460 } 461 462 return status; 463 } 464 465 static inline enum wlan_serialization_cancel_type 466 get_serialization_cancel_type(enum scan_cancel_req_type type) 467 { 468 enum wlan_serialization_cancel_type serialization_type; 469 470 switch (type) { 471 case WLAN_SCAN_CANCEL_SINGLE: 472 serialization_type = WLAN_SER_CANCEL_SINGLE_SCAN; 473 break; 474 case WLAN_SCAN_CANCEL_VDEV_ALL: 475 serialization_type = WLAN_SER_CANCEL_VDEV_SCANS; 476 break; 477 case WLAN_SCAN_CANCEL_PDEV_ALL: 478 serialization_type = WLAN_SER_CANCEL_PDEV_SCANS; 479 break; 480 default: 481 QDF_ASSERT(0); 482 scm_warn("invalid scan_cancel_req_type: %d", type); 483 serialization_type = WLAN_SER_CANCEL_PDEV_SCANS; 484 break; 485 } 486 487 return serialization_type; 488 } 489 490 QDF_STATUS 491 scm_scan_cancel_req(struct scheduler_msg *msg) 492 { 493 struct wlan_serialization_queued_cmd_info cmd = {0,}; 494 struct wlan_serialization_command ser_cmd = {0,}; 495 enum wlan_serialization_cmd_status ser_cmd_status; 496 struct scan_cancel_request *req; 497 QDF_STATUS status = QDF_STATUS_SUCCESS; 498 499 if (!msg) { 500 scm_err("msg received is NULL"); 501 QDF_ASSERT(0); 502 return QDF_STATUS_E_NULL_VALUE; 503 } 504 if (!msg->bodyptr) { 505 scm_err("Bodyptr is NULL"); 506 QDF_ASSERT(0); 507 return QDF_STATUS_E_NULL_VALUE; 508 } 509 510 req = msg->bodyptr; 511 /* 512 * If requester wants to wait for target scan cancel event 513 * instead of internally generated cancel event, just check 514 * which queue this scan request belongs to and send scan 515 * cancel request to FW accordingly. 516 * Else generate internal scan cancel event and notify 517 * handlers and free scan request resources. 518 */ 519 if (req->wait_tgt_cancel && 520 (req->cancel_req.req_type == WLAN_SCAN_CANCEL_SINGLE)) { 521 ser_cmd.cmd_type = WLAN_SER_CMD_SCAN; 522 ser_cmd.cmd_id = req->cancel_req.scan_id; 523 ser_cmd.cmd_cb = NULL; 524 ser_cmd.umac_cmd = NULL; 525 ser_cmd.source = WLAN_UMAC_COMP_SCAN; 526 ser_cmd.is_high_priority = false; 527 ser_cmd.vdev = req->vdev; 528 if (wlan_serialization_is_cmd_present_in_active_queue(NULL, &ser_cmd)) 529 ser_cmd_status = WLAN_SER_CMD_IN_ACTIVE_LIST; 530 else if (wlan_serialization_is_cmd_present_in_pending_queue(NULL, &ser_cmd)) 531 ser_cmd_status = WLAN_SER_CMD_IN_PENDING_LIST; 532 else 533 ser_cmd_status = WLAN_SER_CMD_NOT_FOUND; 534 } else { 535 cmd.requestor = 0; 536 cmd.cmd_type = WLAN_SER_CMD_SCAN; 537 cmd.cmd_id = req->cancel_req.scan_id; 538 cmd.vdev = req->vdev; 539 cmd.queue_type = WLAN_SERIALIZATION_ACTIVE_QUEUE | 540 WLAN_SERIALIZATION_PENDING_QUEUE; 541 cmd.req_type = get_serialization_cancel_type(req->cancel_req.req_type); 542 543 ser_cmd_status = wlan_serialization_cancel_request(&cmd); 544 } 545 546 scm_debug("status: %d, reqid: %d, scanid: %d, vdevid: %d, type: %d", 547 ser_cmd_status, req->cancel_req.requester, 548 req->cancel_req.scan_id, req->cancel_req.vdev_id, 549 req->cancel_req.req_type); 550 551 switch (ser_cmd_status) { 552 case WLAN_SER_CMD_IN_PENDING_LIST: 553 /* do nothing */ 554 break; 555 case WLAN_SER_CMD_IN_ACTIVE_LIST: 556 case WLAN_SER_CMDS_IN_ALL_LISTS: 557 /* send wmi scan cancel to fw */ 558 status = tgt_scan_cancel(req); 559 break; 560 case WLAN_SER_CMD_NOT_FOUND: 561 /* do nothing */ 562 break; 563 default: 564 QDF_ASSERT(0); 565 status = QDF_STATUS_E_INVAL; 566 break; 567 } 568 569 /* Release vdev reference and scan cancel request 570 * processing is complete 571 */ 572 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 573 /* Free cancel request memory */ 574 qdf_mem_free(req); 575 576 return status; 577 } 578 579 #ifdef FEATURE_WLAN_SCAN_PNO 580 static QDF_STATUS 581 scm_pno_event_handler(struct wlan_objmgr_vdev *vdev, 582 struct scan_event *event) 583 { 584 struct scan_vdev_obj *scan_vdev_obj; 585 struct wlan_scan_obj *scan_psoc_obj; 586 scan_event_handler pno_cb; 587 void *cb_arg; 588 589 scan_vdev_obj = wlan_get_vdev_scan_obj(vdev); 590 scan_psoc_obj = wlan_vdev_get_scan_obj(vdev); 591 if (!scan_vdev_obj || !scan_psoc_obj) { 592 scm_err("null scan_vdev_obj %pK scan_obj %pK", 593 scan_vdev_obj, scan_psoc_obj); 594 return QDF_STATUS_E_INVAL; 595 } 596 597 switch (event->type) { 598 case SCAN_EVENT_TYPE_NLO_COMPLETE: 599 if (!scan_vdev_obj->pno_match_evt_received) 600 return QDF_STATUS_SUCCESS; 601 qdf_wake_lock_release(&scan_psoc_obj->pno_cfg.pno_wake_lock, 602 WIFI_POWER_EVENT_WAKELOCK_PNO); 603 qdf_wake_lock_timeout_acquire( 604 &scan_psoc_obj->pno_cfg.pno_wake_lock, 605 SCAN_PNO_SCAN_COMPLETE_WAKE_LOCK_TIMEOUT); 606 scan_vdev_obj->pno_match_evt_received = false; 607 break; 608 case SCAN_EVENT_TYPE_NLO_MATCH: 609 scan_vdev_obj->pno_match_evt_received = true; 610 qdf_wake_lock_timeout_acquire( 611 &scan_psoc_obj->pno_cfg.pno_wake_lock, 612 SCAN_PNO_MATCH_WAKE_LOCK_TIMEOUT); 613 return QDF_STATUS_SUCCESS; 614 default: 615 return QDF_STATUS_E_INVAL; 616 } 617 qdf_spin_lock_bh(&scan_psoc_obj->lock); 618 pno_cb = scan_psoc_obj->pno_cfg.pno_cb.func; 619 cb_arg = scan_psoc_obj->pno_cfg.pno_cb.arg; 620 qdf_spin_unlock_bh(&scan_psoc_obj->lock); 621 622 if (pno_cb) 623 pno_cb(vdev, event, cb_arg); 624 625 return QDF_STATUS_SUCCESS; 626 } 627 #else 628 629 static QDF_STATUS 630 scm_pno_event_handler(struct wlan_objmgr_vdev *vdev, 631 struct scan_event *event) 632 { 633 return QDF_STATUS_SUCCESS; 634 } 635 #endif 636 637 /** 638 * scm_scan_update_scan_event() - update scan event 639 * @scan: scan object 640 * @event: scan event 641 * @scan_start_req: scan_start_req used for triggering scan 642 * 643 * update scan params in scan event 644 * 645 * Return: QDF_STATUS 646 */ 647 static QDF_STATUS 648 scm_scan_update_scan_event(struct wlan_scan_obj *scan, 649 struct scan_event *event, 650 struct scan_start_request *scan_start_req) 651 { 652 if (!event) 653 return QDF_STATUS_E_NULL_VALUE; 654 655 if (!scan || !scan_start_req) { 656 event->scan_start_req = NULL; 657 return QDF_STATUS_E_NULL_VALUE; 658 } 659 /* copy scan start request to pass back buffer */ 660 qdf_mem_copy(&scan->scan_start_request_buff, scan_start_req, 661 sizeof(struct scan_start_request)); 662 /* reset all pointers */ 663 scan->scan_start_request_buff.scan_req.extraie.ptr = NULL; 664 scan->scan_start_request_buff.scan_req.extraie.len = 0; 665 scan->scan_start_request_buff.scan_req.htcap.ptr = NULL; 666 scan->scan_start_request_buff.scan_req.htcap.len = 0; 667 scan->scan_start_request_buff.scan_req.vhtcap.ptr = NULL; 668 scan->scan_start_request_buff.scan_req.vhtcap.len = 0; 669 670 event->scan_start_req = &scan->scan_start_request_buff; 671 672 return QDF_STATUS_SUCCESS; 673 } 674 675 QDF_STATUS 676 scm_scan_event_handler(struct scheduler_msg *msg) 677 { 678 struct wlan_objmgr_vdev *vdev; 679 struct scan_event *event; 680 struct scan_event_info *event_info; 681 struct wlan_serialization_command cmd = {0,}; 682 struct wlan_serialization_command *queued_cmd; 683 struct scan_start_request *scan_start_req; 684 struct wlan_scan_obj *scan; 685 686 if (!msg) { 687 scm_err("NULL msg received "); 688 QDF_ASSERT(0); 689 return QDF_STATUS_E_NULL_VALUE; 690 } 691 if (!msg->bodyptr) { 692 scm_err("NULL scan event received"); 693 QDF_ASSERT(0); 694 return QDF_STATUS_E_NULL_VALUE; 695 } 696 697 event_info = msg->bodyptr; 698 vdev = event_info->vdev; 699 event = &(event_info->event); 700 701 scm_debug("vdevid:%d, type:%d, reason:%d, freq:%d, reqstr:%d, scanid:%d", 702 event->vdev_id, event->type, event->reason, event->chan_freq, 703 event->requester, event->scan_id); 704 /* 705 * NLO requests are never queued, so post NLO events 706 * without checking for their presence in active queue. 707 */ 708 switch (event->type) { 709 case SCAN_EVENT_TYPE_NLO_COMPLETE: 710 case SCAN_EVENT_TYPE_NLO_MATCH: 711 scm_pno_event_handler(vdev, event); 712 goto exit; 713 default: 714 break; 715 } 716 717 cmd.cmd_type = WLAN_SER_CMD_SCAN; 718 cmd.cmd_id = event->scan_id; 719 cmd.cmd_cb = NULL; 720 cmd.umac_cmd = NULL; 721 cmd.source = WLAN_UMAC_COMP_SCAN; 722 cmd.is_high_priority = false; 723 cmd.vdev = vdev; 724 if (!wlan_serialization_is_cmd_present_in_active_queue(NULL, &cmd)) { 725 /* 726 * We received scan event for an already completed/cancelled 727 * scan request. Drop this event. 728 */ 729 scm_debug("Received scan event while request not in active queue"); 730 goto exit; 731 } 732 733 /* Fill scan_start_request used to trigger this scan */ 734 queued_cmd = wlan_serialization_get_scan_cmd_using_scan_id( 735 wlan_vdev_get_psoc(vdev), wlan_vdev_get_id(vdev), 736 event->scan_id, true); 737 738 if (!queued_cmd) { 739 scm_err("NULL queued_cmd"); 740 goto exit; 741 } 742 if (!queued_cmd->umac_cmd) { 743 scm_err("NULL umac_cmd"); 744 goto exit; 745 } 746 scan_start_req = queued_cmd->umac_cmd; 747 748 if (scan_start_req->scan_req.scan_req_id != event->requester) { 749 scm_err("req ID mismatch, scan_req_id:%d, event_req_id:%d", 750 scan_start_req->scan_req.scan_req_id, 751 event->requester); 752 goto exit; 753 } 754 755 scan = wlan_vdev_get_scan_obj(vdev); 756 if (scan) 757 scm_scan_update_scan_event(scan, event, scan_start_req); 758 759 switch (event->type) { 760 case SCAN_EVENT_TYPE_COMPLETED: 761 if (event->reason == SCAN_REASON_COMPLETED) 762 scm_11d_decide_country_code(vdev); 763 /* fall through to release the command */ 764 case SCAN_EVENT_TYPE_START_FAILED: 765 case SCAN_EVENT_TYPE_DEQUEUED: 766 scm_release_serialization_command(vdev, event->scan_id); 767 break; 768 default: 769 break; 770 } 771 772 /* Notify all interested parties */ 773 scm_scan_post_event(vdev, event); 774 775 exit: 776 /* free event info memory */ 777 qdf_mem_free(event_info); 778 wlan_objmgr_vdev_release_ref(vdev, WLAN_SCAN_ID); 779 780 return QDF_STATUS_SUCCESS; 781 } 782 783 QDF_STATUS scm_scan_event_flush_callback(struct scheduler_msg *msg) 784 { 785 struct wlan_objmgr_vdev *vdev; 786 struct scan_event_info *event_info; 787 788 if (!msg || !msg->bodyptr) { 789 scm_err("msg or msg->bodyptr is NULL"); 790 return QDF_STATUS_E_NULL_VALUE; 791 } 792 793 event_info = msg->bodyptr; 794 vdev = event_info->vdev; 795 796 /* free event info memory */ 797 qdf_mem_free(event_info); 798 wlan_objmgr_vdev_release_ref(vdev, WLAN_SCAN_ID); 799 800 return QDF_STATUS_SUCCESS; 801 } 802 803 QDF_STATUS scm_bcn_probe_flush_callback(struct scheduler_msg *msg) 804 { 805 struct scan_bcn_probe_event *bcn; 806 807 bcn = msg->bodyptr; 808 809 if (!bcn) { 810 scm_err("bcn is NULL"); 811 return QDF_STATUS_E_NULL_VALUE; 812 } 813 if (bcn->psoc) 814 wlan_objmgr_psoc_release_ref(bcn->psoc, WLAN_SCAN_ID); 815 if (bcn->rx_data) 816 qdf_mem_free(bcn->rx_data); 817 if (bcn->buf) 818 qdf_nbuf_free(bcn->buf); 819 qdf_mem_free(bcn); 820 821 return QDF_STATUS_SUCCESS; 822 } 823 824 QDF_STATUS scm_scan_start_flush_callback(struct scheduler_msg *msg) 825 { 826 struct scan_start_request *req; 827 828 if (!msg || !msg->bodyptr) { 829 scm_err("msg or msg->bodyptr is NULL"); 830 return QDF_STATUS_E_NULL_VALUE; 831 } 832 833 req = msg->bodyptr; 834 scm_post_internal_scan_complete_event(req, SCAN_REASON_CANCELLED); 835 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 836 scm_scan_free_scan_request_mem(req); 837 838 return QDF_STATUS_SUCCESS; 839 } 840 841 QDF_STATUS scm_scan_cancel_flush_callback(struct scheduler_msg *msg) 842 { 843 struct scan_cancel_request *req; 844 845 if (!msg || !msg->bodyptr) { 846 scm_err("msg or msg->bodyptr is NULL"); 847 return QDF_STATUS_E_NULL_VALUE; 848 } 849 850 req = msg->bodyptr; 851 wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID); 852 /* Free cancel request memory */ 853 qdf_mem_free(req); 854 855 return QDF_STATUS_SUCCESS; 856 } 857