1 /* 2 * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved. 3 * Copyright (c) 2002-2010, Atheros Communications Inc. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 /** 19 * DOC: This file contains NOL related functionality, NOL being the non 20 * occupancy list. After radar has been detected in a particular channel, 21 * the channel cannot be used for a period of 30 minutes which is called 22 * the non occupancy. The NOL is basically a list of all the channels that 23 * radar has been detected on. Each channel has a 30 minute timer associated 24 * with it. This file contains the functionality to add a channel to the NOL, 25 * the NOL timer function and the functionality to remove a channel from the 26 * NOL when its time is up. 27 */ 28 29 #include "../dfs.h" 30 #include "../dfs_channel.h" 31 #include "../dfs_ioctl_private.h" 32 #include "../dfs_internal.h" 33 #include <qdf_time.h> 34 #include <wlan_dfs_mlme_api.h> 35 #include <wlan_dfs_utils_api.h> 36 #include <wlan_reg_services_api.h> 37 #if defined(WLAN_DFS_PARTIAL_OFFLOAD) && defined(HOST_DFS_SPOOF_TEST) 38 #include "../dfs_process_radar_found_ind.h" 39 #include "../dfs_partial_offload_radar.h" 40 #endif 41 42 /** 43 * dfs_nol_timeout() - NOL timeout function. 44 * 45 * Clears the WLAN_CHAN_DFS_RADAR_FOUND flag for the NOL timeout channel. 46 */ 47 static os_timer_func(dfs_nol_timeout) 48 { 49 struct dfs_channel *c = NULL, lc; 50 unsigned long oldest, now; 51 struct wlan_dfs *dfs = NULL; 52 int i; 53 int nchans = 0; 54 55 c = &lc; 56 57 OS_GET_TIMER_ARG(dfs, struct wlan_dfs *); 58 dfs_mlme_get_dfs_ch_nchans(dfs->dfs_pdev_obj, &nchans); 59 60 now = oldest = qdf_system_ticks(); 61 for (i = 0; i < nchans; i++) { 62 dfs_mlme_get_dfs_ch_channels(dfs->dfs_pdev_obj, 63 &(c->dfs_ch_freq), 64 &(c->dfs_ch_flags), 65 &(c->dfs_ch_flagext), 66 &(c->dfs_ch_ieee), 67 &(c->dfs_ch_vhtop_ch_freq_seg1), 68 &(c->dfs_ch_vhtop_ch_freq_seg2), 69 i); 70 if (WLAN_IS_CHAN_RADAR(c)) { 71 if (qdf_system_time_after_eq(now, 72 dfs->dfs_nol_event[i] + 73 dfs_get_nol_timeout(dfs))) { 74 c->dfs_ch_flagext &= 75 ~WLAN_CHAN_DFS_RADAR_FOUND; 76 if (c->dfs_ch_flags & 77 WLAN_CHAN_DFS_RADAR) { 78 /* 79 * NB: do this here so we get only one 80 * msg instead of one for every channel 81 * table entry. 82 */ 83 dfs_debug(dfs, WLAN_DEBUG_DFS, 84 "radar on channel %u (%u MHz) cleared after timeout", 85 86 c->dfs_ch_ieee, 87 c->dfs_ch_freq); 88 } 89 } else if (dfs->dfs_nol_event[i] < oldest) 90 oldest = dfs->dfs_nol_event[i]; 91 } 92 } 93 if (oldest != now) { 94 /* Arrange to process next channel up for a status change. */ 95 qdf_timer_mod(&dfs->dfs_nol_timer, 96 dfs_get_nol_timeout(dfs) - 97 qdf_system_ticks_to_msecs(qdf_system_ticks())); 98 } 99 } 100 101 /** 102 * dfs_nol_elem_free_work_cb - Free NOL element 103 * 104 * Free the NOL element memory 105 */ 106 static void dfs_nol_elem_free_work_cb(void *context) 107 { 108 struct wlan_dfs *dfs = (struct wlan_dfs *)context; 109 struct dfs_nolelem *tmp_nol_entry, *nol_entry; 110 111 WLAN_DFSNOL_LOCK(dfs); 112 if (!TAILQ_EMPTY(&dfs->dfs_nol_free_list)) 113 TAILQ_FOREACH_SAFE(nol_entry, 114 &dfs->dfs_nol_free_list, 115 nolelem_list, 116 tmp_nol_entry) { 117 TAILQ_REMOVE(&dfs->dfs_nol_free_list, 118 nol_entry, nolelem_list); 119 qdf_mem_free(nol_entry); 120 } 121 WLAN_DFSNOL_UNLOCK(dfs); 122 } 123 124 void dfs_nol_timer_init(struct wlan_dfs *dfs) 125 { 126 qdf_timer_init(NULL, 127 &(dfs->dfs_nol_timer), 128 dfs_nol_timeout, 129 (void *)(dfs), 130 QDF_TIMER_TYPE_WAKE_APPS); 131 } 132 133 void dfs_nol_attach(struct wlan_dfs *dfs) 134 { 135 dfs->wlan_dfs_nol_timeout = DFS_NOL_TIMEOUT_S; 136 dfs_nol_timer_init(dfs); 137 qdf_create_work(NULL, &dfs->dfs_nol_elem_free_work, 138 dfs_nol_elem_free_work_cb, dfs); 139 TAILQ_INIT(&dfs->dfs_nol_free_list); 140 dfs->dfs_use_nol = 1; 141 WLAN_DFSNOL_LOCK_CREATE(dfs); 142 } 143 144 void dfs_nol_detach(struct wlan_dfs *dfs) 145 { 146 dfs_nol_timer_cleanup(dfs); 147 qdf_flush_work(&dfs->dfs_nol_elem_free_work); 148 qdf_destroy_work(NULL, &dfs->dfs_nol_elem_free_work); 149 WLAN_DFSNOL_LOCK_DESTROY(dfs); 150 } 151 152 /** 153 * dfs_nol_delete() - Delete the given frequency/chwidth from the NOL. 154 * @dfs: Pointer to wlan_dfs structure. 155 * @delfreq: Freq to delete. 156 * @delchwidth: Channel width to delete. 157 */ 158 static void dfs_nol_delete(struct wlan_dfs *dfs, 159 uint16_t delfreq, 160 uint16_t delchwidth) 161 { 162 struct dfs_nolelem *nol, **prev_next; 163 164 if (!dfs) { 165 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 166 return; 167 } 168 169 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 170 "remove channel=%d/%d MHz from NOL", 171 delfreq, delchwidth); 172 prev_next = &(dfs->dfs_nol); 173 nol = dfs->dfs_nol; 174 while (nol != NULL) { 175 if (nol->nol_freq == delfreq && 176 nol->nol_chwidth == delchwidth) { 177 *prev_next = nol->nol_next; 178 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 179 "removing channel %d/%dMHz from NOL tstamp=%d", 180 nol->nol_freq, 181 nol->nol_chwidth, 182 (qdf_system_ticks_to_msecs 183 (qdf_system_ticks()) / 1000)); 184 TAILQ_INSERT_TAIL(&dfs->dfs_nol_free_list, 185 nol, nolelem_list); 186 nol = *prev_next; 187 188 /* Update the NOL counter. */ 189 dfs->dfs_nol_count--; 190 191 /* Be paranoid! */ 192 if (dfs->dfs_nol_count < 0) { 193 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, "dfs_nol_count < 0; eek!"); 194 dfs->dfs_nol_count = 0; 195 } 196 197 } else { 198 prev_next = &(nol->nol_next); 199 nol = nol->nol_next; 200 } 201 } 202 } 203 204 /** 205 * dfs_remove_from_nol() - Remove the freq from NOL list. 206 * 207 * When NOL times out, this function removes the channel from NOL list. 208 */ 209 static os_timer_func(dfs_remove_from_nol) 210 { 211 struct dfs_nolelem *nol_arg; 212 struct wlan_dfs *dfs; 213 uint16_t delfreq; 214 uint16_t delchwidth; 215 uint8_t chan; 216 217 OS_GET_TIMER_ARG(nol_arg, struct dfs_nolelem *); 218 219 dfs = nol_arg->nol_dfs; 220 delfreq = nol_arg->nol_freq; 221 delchwidth = nol_arg->nol_chwidth; 222 223 /* Delete the given NOL entry. */ 224 DFS_NOL_DELETE_CHAN_LOCKED(dfs, delfreq, delchwidth); 225 226 /* Update the wireless stack with the new NOL. */ 227 dfs_nol_update(dfs); 228 229 dfs_mlme_nol_timeout_notification(dfs->dfs_pdev_obj); 230 chan = utils_dfs_freq_to_chan(delfreq); 231 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 232 "remove channel %d from nol", chan); 233 utils_dfs_reg_update_nol_ch(dfs->dfs_pdev_obj, 234 &chan, 1, DFS_NOL_RESET); 235 utils_dfs_save_nol(dfs->dfs_pdev_obj); 236 237 /* 238 * Free the NOL element in a thread. This is to avoid freeing the 239 * timer object from within timer callback function . The nol element 240 * contains the timer Object. 241 */ 242 qdf_sched_work(NULL, &dfs->dfs_nol_elem_free_work); 243 } 244 245 void dfs_print_nol(struct wlan_dfs *dfs) 246 { 247 struct dfs_nolelem *nol; 248 int i = 0; 249 uint32_t diff_ms, remaining_sec; 250 251 if (!dfs) { 252 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 253 return; 254 } 255 256 nol = dfs->dfs_nol; 257 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, "NOL"); 258 while (nol != NULL) { 259 diff_ms = qdf_system_ticks_to_msecs(qdf_system_ticks() - 260 nol->nol_start_ticks); 261 diff_ms = (nol->nol_timeout_ms - diff_ms); 262 remaining_sec = diff_ms / 1000; /* Convert to seconds */ 263 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, 264 "nol:%d channel=%d MHz width=%d MHz time left=%u seconds nol starttick=%llu", 265 i++, nol->nol_freq, 266 nol->nol_chwidth, 267 remaining_sec, 268 (uint64_t)nol->nol_start_ticks); 269 nol = nol->nol_next; 270 } 271 } 272 273 void dfs_print_nolhistory(struct wlan_dfs *dfs) 274 { 275 struct dfs_channel *c, lc; 276 int i, j = 0; 277 int nchans = 0; 278 279 if (!dfs) { 280 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 281 return; 282 } 283 284 c = &lc; 285 286 dfs_mlme_get_dfs_ch_nchans(dfs->dfs_pdev_obj, &nchans); 287 for (i = 0; i < nchans; i++) { 288 dfs_mlme_get_dfs_ch_channels(dfs->dfs_pdev_obj, 289 &(c->dfs_ch_freq), 290 &(c->dfs_ch_flags), 291 &(c->dfs_ch_flagext), 292 &(c->dfs_ch_ieee), 293 &(c->dfs_ch_vhtop_ch_freq_seg1), 294 &(c->dfs_ch_vhtop_ch_freq_seg2), 295 i); 296 if (WLAN_IS_CHAN_HISTORY_RADAR(c)) { 297 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, 298 "nolhistory:%d channel=%d MHz Flags=%llx", 299 j, c->dfs_ch_freq, c->dfs_ch_flags); 300 j++; 301 } 302 } 303 } 304 305 void dfs_get_nol(struct wlan_dfs *dfs, 306 struct dfsreq_nolelem *dfs_nol, 307 int *nchan) 308 { 309 struct dfs_nolelem *nol; 310 311 *nchan = 0; 312 313 if (!dfs) { 314 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 315 return; 316 } 317 318 nol = dfs->dfs_nol; 319 while (nol != NULL) { 320 dfs_nol[*nchan].nol_freq = nol->nol_freq; 321 dfs_nol[*nchan].nol_chwidth = nol->nol_chwidth; 322 dfs_nol[*nchan].nol_start_ticks = nol->nol_start_ticks; 323 dfs_nol[*nchan].nol_timeout_ms = nol->nol_timeout_ms; 324 ++(*nchan); 325 nol = nol->nol_next; 326 } 327 } 328 329 void dfs_set_nol(struct wlan_dfs *dfs, 330 struct dfsreq_nolelem *dfs_nol, 331 int nchan) 332 { 333 #define TIME_IN_MS 1000 334 uint32_t nol_time_left_ms; 335 struct dfs_channel chan; 336 int i; 337 uint8_t chan_num; 338 339 if (!dfs) { 340 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 341 return; 342 } 343 344 for (i = 0; i < nchan; i++) { 345 nol_time_left_ms = 346 qdf_system_ticks_to_msecs(qdf_system_ticks() - 347 dfs_nol[i].nol_start_ticks); 348 349 if (nol_time_left_ms < dfs_nol[i].nol_timeout_ms) { 350 chan.dfs_ch_freq = dfs_nol[i].nol_freq; 351 chan.dfs_ch_flags = 0; 352 chan.dfs_ch_flagext = 0; 353 nol_time_left_ms = 354 (dfs_nol[i].nol_timeout_ms - nol_time_left_ms); 355 356 DFS_NOL_ADD_CHAN_LOCKED(dfs, chan.dfs_ch_freq, 357 (nol_time_left_ms / TIME_IN_MS)); 358 chan_num = utils_dfs_freq_to_chan(chan.dfs_ch_freq); 359 utils_dfs_reg_update_nol_ch(dfs->dfs_pdev_obj, 360 &chan_num, 1, DFS_NOL_SET); 361 } 362 } 363 #undef TIME_IN_MS 364 dfs_nol_update(dfs); 365 } 366 367 void dfs_nol_addchan(struct wlan_dfs *dfs, 368 uint16_t freq, 369 uint32_t dfs_nol_timeout) 370 { 371 #define TIME_IN_MS 1000 372 #define TIME_IN_US (TIME_IN_MS * 1000) 373 struct dfs_nolelem *nol, *elem, *prev; 374 /* For now, assume all events are 20MHz wide. */ 375 int ch_width = 20; 376 377 if (!dfs) { 378 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 379 return; 380 } 381 nol = dfs->dfs_nol; 382 prev = dfs->dfs_nol; 383 elem = NULL; 384 while (nol != NULL) { 385 if ((nol->nol_freq == freq) && 386 (nol->nol_chwidth == ch_width)) { 387 nol->nol_start_ticks = qdf_system_ticks(); 388 nol->nol_timeout_ms = dfs_nol_timeout * TIME_IN_MS; 389 390 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 391 "Update OS Ticks for NOL %d MHz / %d MHz", 392 nol->nol_freq, nol->nol_chwidth); 393 394 qdf_timer_stop(&nol->nol_timer); 395 qdf_timer_mod(&nol->nol_timer, 396 dfs_nol_timeout * TIME_IN_MS); 397 return; 398 } 399 prev = nol; 400 nol = nol->nol_next; 401 } 402 403 /* Add a new element to the NOL. */ 404 elem = (struct dfs_nolelem *)qdf_mem_malloc(sizeof(struct dfs_nolelem)); 405 if (!elem) 406 goto bad; 407 408 qdf_mem_zero(elem, sizeof(*elem)); 409 elem->nol_dfs = dfs; 410 elem->nol_freq = freq; 411 elem->nol_chwidth = ch_width; 412 elem->nol_start_ticks = qdf_system_ticks(); 413 elem->nol_timeout_ms = dfs_nol_timeout*TIME_IN_MS; 414 elem->nol_next = NULL; 415 if (prev) { 416 prev->nol_next = elem; 417 } else { 418 /* This is the first element in the NOL. */ 419 dfs->dfs_nol = elem; 420 } 421 422 qdf_timer_init(NULL, 423 &elem->nol_timer, dfs_remove_from_nol, 424 elem, QDF_TIMER_TYPE_WAKE_APPS); 425 qdf_timer_mod(&elem->nol_timer, dfs_nol_timeout * TIME_IN_MS); 426 427 /* Update the NOL counter. */ 428 dfs->dfs_nol_count++; 429 430 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 431 "new NOL channel %d MHz / %d MHz", 432 elem->nol_freq, elem->nol_chwidth); 433 return; 434 435 bad: 436 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL | WLAN_DEBUG_DFS, 437 "failed to allocate memory for nol entry"); 438 439 #undef TIME_IN_MS 440 #undef TIME_IN_US 441 } 442 443 void dfs_get_nol_chfreq_and_chwidth(struct dfsreq_nolelem *dfs_nol, 444 uint32_t *nol_chfreq, 445 uint32_t *nol_chwidth, 446 int index) 447 { 448 if (!dfs_nol) 449 return; 450 451 *nol_chfreq = dfs_nol[index].nol_freq; 452 *nol_chwidth = dfs_nol[index].nol_chwidth; 453 } 454 455 void dfs_nol_update(struct wlan_dfs *dfs) 456 { 457 struct dfsreq_nolelem *dfs_nol; 458 int nlen; 459 460 /* 461 * Allocate enough entries to store the NOL. At least on Linux 462 * (don't ask why), if you allocate a 0 entry array, the 463 * returned pointer is 0x10. Make sure you're aware of this 464 * when you start debugging. 465 */ 466 dfs_nol = (struct dfsreq_nolelem *)qdf_mem_malloc( 467 sizeof(struct dfsreq_nolelem) * dfs->dfs_nol_count); 468 469 if (!dfs_nol) { 470 /* 471 * XXX TODO: if this fails, just schedule a task to retry 472 * updating the NOL at a later stage. That way the NOL 473 * update _DOES_ happen - hopefully the failure was just 474 * temporary. 475 */ 476 dfs_alert(dfs, WLAN_DEBUG_DFS_ALWAYS, "failed to allocate NOL update memory!"); 477 return; 478 } 479 480 DFS_GET_NOL_LOCKED(dfs, dfs_nol, &nlen); 481 482 /* Be suitably paranoid for now. */ 483 if (nlen != dfs->dfs_nol_count) 484 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, "nlen (%d) != dfs->dfs_nol_count (%d)!", 485 nlen, dfs->dfs_nol_count); 486 487 /* 488 * Call the driver layer to have it recalculate the NOL flags 489 * for each driver/umac channel. If the list is empty, pass 490 * NULL instead of dfs_nol. The operating system may have some 491 * special representation for "malloc a 0 byte memory region" 492 * - for example, Linux 2.6.38-13 (ubuntu) returns 0x10 rather 493 * than a valid allocation (and is likely not NULL so the 494 * pointer doesn't match NULL checks in any later code. 495 */ 496 dfs_mlme_clist_update(dfs->dfs_pdev_obj, 497 (nlen > 0) ? dfs_nol : NULL, 498 nlen); 499 500 qdf_mem_free(dfs_nol); 501 } 502 503 void dfs_nol_free_list(struct wlan_dfs *dfs) 504 { 505 struct dfs_nolelem *nol = dfs->dfs_nol, *prev; 506 507 while (nol) { 508 prev = nol; 509 nol = nol->nol_next; 510 qdf_mem_free(prev); 511 /* Update the NOL counter. */ 512 dfs->dfs_nol_count--; 513 514 if (dfs->dfs_nol_count < 0) { 515 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs_nol_count < 0"); 516 ASSERT(0); 517 } 518 } 519 520 dfs->dfs_nol = NULL; 521 } 522 523 void dfs_nol_timer_cleanup(struct wlan_dfs *dfs) 524 { 525 struct dfs_nolelem *nol; 526 527 WLAN_DFSNOL_LOCK(dfs); 528 nol = dfs->dfs_nol; 529 while (nol) { 530 dfs->dfs_nol = nol->nol_next; 531 dfs->dfs_nol_count--; 532 533 if (!qdf_timer_stop(&nol->nol_timer)) { 534 /* 535 * Unlock is required so that when we sync with the 536 * nol_timeout timer we do not run into deadlock. 537 */ 538 WLAN_DFSNOL_UNLOCK(dfs); 539 qdf_timer_sync_cancel(&(nol->nol_timer)); 540 WLAN_DFSNOL_LOCK(dfs); 541 } 542 543 qdf_mem_free(nol); 544 nol = dfs->dfs_nol; 545 } 546 WLAN_DFSNOL_UNLOCK(dfs); 547 } 548 549 void dfs_nol_workqueue_cleanup(struct wlan_dfs *dfs) 550 { 551 qdf_flush_work(&dfs->dfs_nol_elem_free_work); 552 } 553 554 int dfs_get_use_nol(struct wlan_dfs *dfs) 555 { 556 return dfs->dfs_use_nol; 557 } 558 559 int dfs_get_nol_timeout(struct wlan_dfs *dfs) 560 { 561 return dfs->wlan_dfs_nol_timeout; 562 } 563 564 void dfs_getnol(struct wlan_dfs *dfs, void *dfs_nolinfo) 565 { 566 struct dfsreq_nolinfo *nolinfo = (struct dfsreq_nolinfo *)dfs_nolinfo; 567 568 DFS_GET_NOL_LOCKED(dfs, nolinfo->dfs_nol, &(nolinfo->dfs_ch_nchans)); 569 } 570 571 void dfs_clear_nolhistory(struct wlan_dfs *dfs) 572 { 573 /* We should have a dfs_clear_nolhistory API from Regdomain. */ 574 struct dfs_channel *c, lc; 575 int i; 576 int nchans = 0; 577 578 c = &lc; 579 dfs_mlme_get_dfs_ch_nchans(dfs->dfs_pdev_obj, &nchans); 580 for (i = 0; i < nchans; i++) { 581 dfs_mlme_get_dfs_ch_channels(dfs->dfs_pdev_obj, 582 &(c->dfs_ch_freq), 583 &(c->dfs_ch_flags), 584 &(c->dfs_ch_flagext), 585 &(c->dfs_ch_ieee), 586 &(c->dfs_ch_vhtop_ch_freq_seg1), 587 &(c->dfs_ch_vhtop_ch_freq_seg2), 588 i); 589 WLAN_CHAN_CLR_HISTORY_RADAR(c); 590 } 591 } 592 593 #if defined(WLAN_DFS_PARTIAL_OFFLOAD) && defined(HOST_DFS_SPOOF_TEST) 594 void dfs_remove_spoof_channel_from_nol(struct wlan_dfs *dfs) 595 { 596 struct dfs_nolelem *nol; 597 uint8_t channels[NUM_CHANNELS_160MHZ]; 598 int i, nchans = 0; 599 600 nchans = dfs_get_bonding_channels(&dfs->dfs_radar_found_chan, 0, 601 channels); 602 603 WLAN_DFSNOL_LOCK(dfs); 604 for (i = 0; i < nchans && i < NUM_CHANNELS_160MHZ; i++) { 605 nol = dfs->dfs_nol; 606 while (nol) { 607 if (nol->nol_freq == (uint16_t)utils_dfs_chan_to_freq( 608 channels[i])) { 609 OS_SET_TIMER(&nol->nol_timer, 0); 610 break; 611 } 612 nol = nol->nol_next; 613 } 614 } 615 WLAN_DFSNOL_UNLOCK(dfs); 616 } 617 #endif 618