1 /* 2 * Copyright (c) 2016-2020 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_objmgr_vdev_obj.h> 36 #include <wlan_dfs_utils_api.h> 37 #include <wlan_reg_services_api.h> 38 #if defined(WLAN_DFS_PARTIAL_OFFLOAD) && defined(HOST_DFS_SPOOF_TEST) 39 #include "../dfs_process_radar_found_ind.h" 40 #include "../dfs_partial_offload_radar.h" 41 #endif 42 #include <qdf_types.h> 43 44 void dfs_set_update_nol_flag(struct wlan_dfs *dfs, bool val) 45 { 46 dfs->update_nol = val; 47 } 48 49 bool dfs_get_update_nol_flag(struct wlan_dfs *dfs) 50 { 51 return dfs->update_nol; 52 } 53 54 /** 55 * dfs_nol_timeout() - NOL timeout function. 56 * 57 * Clears the WLAN_CHAN_DFS_RADAR_FOUND flag for the NOL timeout channel. 58 */ 59 /* Unused function */ 60 #ifdef CONFIG_CHAN_FREQ_API 61 static os_timer_func(dfs_nol_timeout) 62 { 63 struct dfs_channel *c = NULL, lc; 64 unsigned long oldest, now; 65 struct wlan_dfs *dfs = NULL; 66 int i; 67 int nchans = 0; 68 69 c = &lc; 70 71 OS_GET_TIMER_ARG(dfs, struct wlan_dfs *); 72 dfs_mlme_get_dfs_ch_nchans(dfs->dfs_pdev_obj, &nchans); 73 74 now = oldest = qdf_system_ticks(); 75 for (i = 0; i < nchans; i++) { 76 dfs_mlme_get_dfs_channels_for_freq 77 (dfs->dfs_pdev_obj, 78 &c->dfs_ch_freq, 79 &c->dfs_ch_flags, 80 &c->dfs_ch_flagext, 81 &c->dfs_ch_ieee, 82 &c->dfs_ch_vhtop_ch_freq_seg1, 83 &c->dfs_ch_vhtop_ch_freq_seg2, 84 &c->dfs_ch_mhz_freq_seg1, 85 &c->dfs_ch_mhz_freq_seg2, 86 i); 87 if (WLAN_IS_CHAN_RADAR(c)) { 88 if (qdf_system_time_after_eq(now, 89 dfs->dfs_nol_event[i] + 90 dfs_get_nol_timeout(dfs))) { 91 c->dfs_ch_flagext &= ~WLAN_CHAN_DFS_RADAR_FOUND; 92 if (c->dfs_ch_flags & WLAN_CHAN_DFS_RADAR) { 93 /* 94 * NB: do this here so we get only one 95 * msg instead of one for every channel 96 * table entry. 97 */ 98 dfs_debug(dfs, WLAN_DEBUG_DFS, 99 "radar on channel %u (%u MHz) cleared after timeout", 100 c->dfs_ch_ieee, 101 c->dfs_ch_freq); 102 } 103 } else if (dfs->dfs_nol_event[i] < oldest) { 104 oldest = dfs->dfs_nol_event[i]; 105 } 106 } 107 } 108 if (oldest != now) { 109 /* Arrange to process next channel up for a status change. */ 110 qdf_timer_mod(&dfs->dfs_nol_timer, 111 dfs_get_nol_timeout(dfs) - 112 qdf_system_ticks_to_msecs(qdf_system_ticks())); 113 } 114 } 115 #else 116 #ifdef CONFIG_CHAN_NUM_API 117 static os_timer_func(dfs_nol_timeout) 118 { 119 struct dfs_channel *c = NULL, lc; 120 unsigned long oldest, now; 121 struct wlan_dfs *dfs = NULL; 122 int i; 123 int nchans = 0; 124 125 c = &lc; 126 127 OS_GET_TIMER_ARG(dfs, struct wlan_dfs *); 128 dfs_mlme_get_dfs_ch_nchans(dfs->dfs_pdev_obj, &nchans); 129 130 now = oldest = qdf_system_ticks(); 131 for (i = 0; i < nchans; i++) { 132 dfs_mlme_get_dfs_ch_channels(dfs->dfs_pdev_obj, 133 &(c->dfs_ch_freq), 134 &(c->dfs_ch_flags), 135 &(c->dfs_ch_flagext), 136 &(c->dfs_ch_ieee), 137 &(c->dfs_ch_vhtop_ch_freq_seg1), 138 &(c->dfs_ch_vhtop_ch_freq_seg2), 139 i); 140 if (WLAN_IS_CHAN_RADAR(c)) { 141 if (qdf_system_time_after_eq(now, 142 dfs->dfs_nol_event[i] + 143 dfs_get_nol_timeout(dfs))) { 144 c->dfs_ch_flagext &= 145 ~WLAN_CHAN_DFS_RADAR_FOUND; 146 if (c->dfs_ch_flags & 147 WLAN_CHAN_DFS_RADAR) { 148 /* 149 * NB: do this here so we get only one 150 * msg instead of one for every channel 151 * table entry. 152 */ 153 dfs_debug(dfs, WLAN_DEBUG_DFS, 154 "radar on channel %u (%u MHz) cleared after timeout", 155 156 c->dfs_ch_ieee, 157 c->dfs_ch_freq); 158 } 159 } else if (dfs->dfs_nol_event[i] < oldest) 160 oldest = dfs->dfs_nol_event[i]; 161 } 162 } 163 if (oldest != now) { 164 /* Arrange to process next channel up for a status change. */ 165 qdf_timer_mod(&dfs->dfs_nol_timer, 166 dfs_get_nol_timeout(dfs) - 167 qdf_system_ticks_to_msecs(qdf_system_ticks())); 168 } 169 } 170 #endif 171 #endif 172 173 /** 174 * dfs_nol_elem_free_work_cb - Free NOL element 175 * 176 * Free the NOL element memory 177 */ 178 static void dfs_nol_elem_free_work_cb(void *context) 179 { 180 struct wlan_dfs *dfs = (struct wlan_dfs *)context; 181 struct dfs_nolelem *nol_head; 182 183 while (true) { 184 WLAN_DFSNOL_LOCK(dfs); 185 186 nol_head = TAILQ_FIRST(&dfs->dfs_nol_free_list); 187 if (nol_head) { 188 TAILQ_REMOVE(&dfs->dfs_nol_free_list, nol_head, 189 nolelem_list); 190 WLAN_DFSNOL_UNLOCK(dfs); 191 192 qdf_timer_free(&nol_head->nol_timer); 193 qdf_mem_free(nol_head); 194 } else { 195 WLAN_DFSNOL_UNLOCK(dfs); 196 break; 197 } 198 } 199 } 200 201 void dfs_nol_timer_init(struct wlan_dfs *dfs) 202 { 203 qdf_timer_init(NULL, 204 &(dfs->dfs_nol_timer), 205 dfs_nol_timeout, 206 (void *)(dfs), 207 QDF_TIMER_TYPE_WAKE_APPS); 208 } 209 210 void dfs_nol_attach(struct wlan_dfs *dfs) 211 { 212 dfs->wlan_dfs_nol_timeout = DFS_NOL_TIMEOUT_S; 213 dfs_nol_timer_init(dfs); 214 qdf_create_work(NULL, &dfs->dfs_nol_elem_free_work, 215 dfs_nol_elem_free_work_cb, dfs); 216 TAILQ_INIT(&dfs->dfs_nol_free_list); 217 dfs->dfs_use_nol = 1; 218 WLAN_DFSNOL_LOCK_CREATE(dfs); 219 } 220 221 void dfs_nol_detach(struct wlan_dfs *dfs) 222 { 223 dfs_nol_timer_cleanup(dfs); 224 qdf_flush_work(&dfs->dfs_nol_elem_free_work); 225 qdf_destroy_work(NULL, &dfs->dfs_nol_elem_free_work); 226 WLAN_DFSNOL_LOCK_DESTROY(dfs); 227 } 228 229 void dfs_nol_timer_detach(struct wlan_dfs *dfs) 230 { 231 qdf_timer_free(&dfs->dfs_nol_timer); 232 } 233 234 /** 235 * dfs_nol_delete() - Delete the given frequency/chwidth from the NOL. 236 * @dfs: Pointer to wlan_dfs structure. 237 * @delfreq: Freq to delete. 238 * @delchwidth: Channel width to delete. 239 */ 240 static void dfs_nol_delete(struct wlan_dfs *dfs, 241 uint16_t delfreq, 242 uint16_t delchwidth) 243 { 244 struct dfs_nolelem *nol, **prev_next; 245 246 if (!dfs) { 247 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 248 return; 249 } 250 251 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 252 "remove channel=%d/%d MHz from NOL", 253 delfreq, delchwidth); 254 prev_next = &(dfs->dfs_nol); 255 nol = dfs->dfs_nol; 256 while (nol) { 257 if (nol->nol_freq == delfreq && 258 nol->nol_chwidth == delchwidth) { 259 *prev_next = nol->nol_next; 260 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 261 "removing channel %d/%dMHz from NOL tstamp=%d", 262 nol->nol_freq, 263 nol->nol_chwidth, 264 (qdf_system_ticks_to_msecs 265 (qdf_system_ticks()) / 1000)); 266 TAILQ_INSERT_TAIL(&dfs->dfs_nol_free_list, 267 nol, nolelem_list); 268 nol = *prev_next; 269 270 /* Update the NOL counter. */ 271 dfs->dfs_nol_count--; 272 273 /* Be paranoid! */ 274 if (dfs->dfs_nol_count < 0) { 275 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, "dfs_nol_count < 0; eek!"); 276 dfs->dfs_nol_count = 0; 277 } 278 279 } else { 280 prev_next = &(nol->nol_next); 281 nol = nol->nol_next; 282 } 283 } 284 } 285 286 #ifdef QCA_SUPPORT_DFS_CHAN_POSTNOL 287 /** 288 * dfs_switch_to_postnol_chan_if_nol_expired() - Find if NOL is expired 289 * in the postNOL channel configured. If true, trigger channel change. 290 * @dfs: Pointer to DFS of wlan_dfs structure. 291 * 292 * Return: True, if channel change is triggered, else false. 293 */ 294 static bool 295 dfs_switch_to_postnol_chan_if_nol_expired(struct wlan_dfs *dfs) 296 { 297 struct dfs_channel chan; 298 struct dfs_channel *curchan = dfs->dfs_curchan; 299 bool is_curchan_11ac = false, is_curchan_11axa = false; 300 enum wlan_phymode postnol_phymode; 301 302 if (!dfs->dfs_chan_postnol_freq) 303 return false; 304 305 if (WLAN_IS_CHAN_11AC_VHT20(curchan) || 306 WLAN_IS_CHAN_11AC_VHT40(curchan) || 307 WLAN_IS_CHAN_11AC_VHT80(curchan) || 308 WLAN_IS_CHAN_11AC_VHT160(curchan) || 309 WLAN_IS_CHAN_11AC_VHT80_80(curchan)) 310 is_curchan_11ac = true; 311 else if (WLAN_IS_CHAN_11AXA_HE20(curchan) || 312 WLAN_IS_CHAN_11AXA_HE40PLUS(curchan) || 313 WLAN_IS_CHAN_11AXA_HE40MINUS(curchan) || 314 WLAN_IS_CHAN_11AXA_HE80(curchan) || 315 WLAN_IS_CHAN_11AXA_HE160(curchan) || 316 WLAN_IS_CHAN_11AXA_HE80_80(curchan)) 317 is_curchan_11axa = true; 318 319 switch (dfs->dfs_chan_postnol_mode) { 320 case CH_WIDTH_20MHZ: 321 if (is_curchan_11ac) 322 postnol_phymode = WLAN_PHYMODE_11AC_VHT20; 323 else if (is_curchan_11axa) 324 postnol_phymode = WLAN_PHYMODE_11AXA_HE20; 325 else 326 return false; 327 break; 328 case CH_WIDTH_40MHZ: 329 if (is_curchan_11ac) 330 postnol_phymode = WLAN_PHYMODE_11AC_VHT40; 331 else if (is_curchan_11axa) 332 postnol_phymode = WLAN_PHYMODE_11AXA_HE40; 333 else 334 return false; 335 break; 336 case CH_WIDTH_80MHZ: 337 if (is_curchan_11ac) 338 postnol_phymode = WLAN_PHYMODE_11AC_VHT80; 339 else if (is_curchan_11axa) 340 postnol_phymode = WLAN_PHYMODE_11AXA_HE80; 341 else 342 return false; 343 break; 344 case CH_WIDTH_160MHZ: 345 if (is_curchan_11ac) 346 postnol_phymode = WLAN_PHYMODE_11AC_VHT160; 347 else if (is_curchan_11axa) 348 postnol_phymode = WLAN_PHYMODE_11AXA_HE160; 349 else 350 return false; 351 break; 352 default: 353 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, 354 "Invalid postNOL mode set. Cannot switch to the chan"); 355 return false; 356 } 357 358 qdf_mem_zero(&chan, sizeof(struct dfs_channel)); 359 if (QDF_STATUS_SUCCESS != 360 dfs_mlme_find_dot11_chan_for_freq( 361 dfs->dfs_pdev_obj, 362 dfs->dfs_chan_postnol_freq, 363 dfs->dfs_chan_postnol_cfreq2, 364 postnol_phymode, 365 &chan.dfs_ch_freq, 366 &chan.dfs_ch_flags, 367 &chan.dfs_ch_flagext, 368 &chan.dfs_ch_ieee, 369 &chan.dfs_ch_vhtop_ch_freq_seg1, 370 &chan.dfs_ch_vhtop_ch_freq_seg2, 371 &chan.dfs_ch_mhz_freq_seg1, 372 &chan.dfs_ch_mhz_freq_seg2)) { 373 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, 374 "Channel %d not found for mode %d and cfreq2 %d", 375 dfs->dfs_chan_postnol_freq, 376 postnol_phymode, 377 dfs->dfs_chan_postnol_cfreq2); 378 return false; 379 } 380 if (WLAN_IS_CHAN_RADAR(&chan)) 381 return false; 382 383 if (global_dfs_to_mlme.mlme_postnol_chan_switch) 384 global_dfs_to_mlme.mlme_postnol_chan_switch( 385 dfs->dfs_pdev_obj, 386 dfs->dfs_chan_postnol_freq, 387 dfs->dfs_chan_postnol_cfreq2, 388 postnol_phymode); 389 return true; 390 } 391 #else 392 static inline bool 393 dfs_switch_to_postnol_chan_if_nol_expired(struct wlan_dfs *dfs) 394 { 395 return false; 396 } 397 #endif 398 399 /** 400 * dfs_remove_from_nol() - Remove the freq from NOL list. 401 * 402 * When NOL times out, this function removes the channel from NOL list. 403 */ 404 #ifdef CONFIG_CHAN_FREQ_API 405 static os_timer_func(dfs_remove_from_nol) 406 { 407 struct dfs_nolelem *nol_arg; 408 struct wlan_dfs *dfs; 409 uint16_t delfreq; 410 uint16_t delchwidth; 411 uint8_t chan; 412 413 OS_GET_TIMER_ARG(nol_arg, struct dfs_nolelem *); 414 415 dfs = nol_arg->nol_dfs; 416 delfreq = nol_arg->nol_freq; 417 delchwidth = nol_arg->nol_chwidth; 418 419 /* Delete the given NOL entry. */ 420 DFS_NOL_DELETE_CHAN_LOCKED(dfs, delfreq, delchwidth); 421 422 /* Update the wireless stack with the new NOL. */ 423 dfs_nol_update(dfs); 424 425 dfs_mlme_nol_timeout_notification(dfs->dfs_pdev_obj); 426 chan = utils_dfs_freq_to_chan(delfreq); 427 utils_dfs_deliver_event(dfs->dfs_pdev_obj, delfreq, 428 WLAN_EV_NOL_FINISHED); 429 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 430 "remove channel %d from nol", chan); 431 utils_dfs_unmark_precac_nol_for_freq(dfs->dfs_pdev_obj, delfreq); 432 433 utils_dfs_reg_update_nol_chan_for_freq(dfs->dfs_pdev_obj, 434 &delfreq, 1, DFS_NOL_RESET); 435 utils_dfs_save_nol(dfs->dfs_pdev_obj); 436 437 /* 438 * Check if a channel is configured by the user to which we have to 439 * switch after it's NOL expiry. If that is the case, change 440 * channel immediately. 441 * 442 * If a channel switch is required (indicated by the return value of 443 * dfs_switch_to_postnol_chan_if_nol_expired), return from this function 444 * without posting Start event to Agile SM. That will be taken care 445 * of, after VAP start. 446 */ 447 if (dfs_switch_to_postnol_chan_if_nol_expired(dfs)) 448 return; 449 450 utils_dfs_agile_sm_deliver_evt(dfs->dfs_pdev_obj, 451 DFS_AGILE_SM_EV_AGILE_START); 452 } 453 #else 454 #ifdef CONFIG_CHAN_NUM_API 455 static os_timer_func(dfs_remove_from_nol) 456 { 457 struct dfs_nolelem *nol_arg; 458 struct wlan_dfs *dfs; 459 uint16_t delfreq; 460 uint16_t delchwidth; 461 uint8_t chan; 462 463 OS_GET_TIMER_ARG(nol_arg, struct dfs_nolelem *); 464 465 dfs = nol_arg->nol_dfs; 466 delfreq = nol_arg->nol_freq; 467 delchwidth = nol_arg->nol_chwidth; 468 469 /* Delete the given NOL entry. */ 470 DFS_NOL_DELETE_CHAN_LOCKED(dfs, delfreq, delchwidth); 471 472 /* Update the wireless stack with the new NOL. */ 473 dfs_nol_update(dfs); 474 475 dfs_mlme_nol_timeout_notification(dfs->dfs_pdev_obj); 476 chan = utils_dfs_freq_to_chan(delfreq); 477 utils_dfs_deliver_event(dfs->dfs_pdev_obj, delfreq, 478 WLAN_EV_NOL_FINISHED); 479 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 480 "remove channel %d from nol", chan); 481 utils_dfs_unmark_precac_nol(dfs->dfs_pdev_obj, chan); 482 utils_dfs_reg_update_nol_ch(dfs->dfs_pdev_obj, 483 &chan, 1, DFS_NOL_RESET); 484 utils_dfs_save_nol(dfs->dfs_pdev_obj); 485 } 486 #endif 487 #endif 488 489 void dfs_print_nol(struct wlan_dfs *dfs) 490 { 491 struct dfs_nolelem *nol; 492 int i = 0; 493 uint32_t diff_ms, remaining_sec; 494 495 if (!dfs) { 496 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 497 return; 498 } 499 500 nol = dfs->dfs_nol; 501 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, "NOL"); 502 while (nol) { 503 diff_ms = qdf_do_div(qdf_get_monotonic_boottime() - 504 nol->nol_start_us, 1000); 505 diff_ms = (nol->nol_timeout_ms - diff_ms); 506 remaining_sec = diff_ms / 1000; /* Convert to seconds */ 507 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, 508 "nol:%d channel=%d MHz width=%d MHz time left=%u seconds nol start_us=%llu", 509 i++, nol->nol_freq, 510 nol->nol_chwidth, 511 remaining_sec, 512 nol->nol_start_us); 513 nol = nol->nol_next; 514 } 515 } 516 517 void dfs_print_nolhistory(struct wlan_dfs *dfs) 518 { 519 struct dfs_channel *chan_list; 520 int i, j; 521 int nchans; 522 523 if (!dfs) { 524 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 525 return; 526 } 527 528 nchans = dfs_get_num_chans(); 529 530 chan_list = qdf_mem_malloc(nchans * sizeof(*chan_list)); 531 if (!chan_list) 532 return; 533 534 utils_dfs_get_nol_history_chan_list(dfs->dfs_pdev_obj, 535 (void *)chan_list, &nchans); 536 if (!nchans) { 537 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "zero chans"); 538 qdf_mem_free(chan_list); 539 return; 540 } 541 542 for (i = 0, j = 0; i < nchans; i++, j++) 543 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, 544 "nolhistory = %d channel = %d MHz", 545 j, chan_list[i].dfs_ch_freq); 546 547 qdf_mem_free(chan_list); 548 } 549 550 void dfs_get_nol(struct wlan_dfs *dfs, 551 struct dfsreq_nolelem *dfs_nol, 552 int *nchan) 553 { 554 struct dfs_nolelem *nol; 555 556 *nchan = 0; 557 558 if (!dfs) { 559 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 560 return; 561 } 562 563 nol = dfs->dfs_nol; 564 while (nol) { 565 dfs_nol[*nchan].nol_freq = nol->nol_freq; 566 dfs_nol[*nchan].nol_chwidth = nol->nol_chwidth; 567 dfs_nol[*nchan].nol_start_us = nol->nol_start_us; 568 dfs_nol[*nchan].nol_timeout_ms = nol->nol_timeout_ms; 569 ++(*nchan); 570 nol = nol->nol_next; 571 } 572 } 573 574 #ifdef CONFIG_CHAN_FREQ_API 575 void dfs_set_nol(struct wlan_dfs *dfs, 576 struct dfsreq_nolelem *dfs_nol, 577 int nchan) 578 { 579 #define TIME_IN_MS 1000 580 uint32_t nol_time_lft_ms; 581 struct dfs_channel chan; 582 int i; 583 584 if (!dfs) { 585 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 586 return; 587 } 588 589 for (i = 0; i < nchan; i++) { 590 nol_time_lft_ms = qdf_do_div(qdf_get_monotonic_boottime() - 591 dfs_nol[i].nol_start_us, 1000); 592 593 if (nol_time_lft_ms < dfs_nol[i].nol_timeout_ms) { 594 chan.dfs_ch_freq = dfs_nol[i].nol_freq; 595 chan.dfs_ch_flags = 0; 596 chan.dfs_ch_flagext = 0; 597 nol_time_lft_ms = 598 (dfs_nol[i].nol_timeout_ms - nol_time_lft_ms); 599 600 DFS_NOL_ADD_CHAN_LOCKED(dfs, chan.dfs_ch_freq, 601 (nol_time_lft_ms / TIME_IN_MS)); 602 utils_dfs_reg_update_nol_chan_for_freq(dfs->dfs_pdev_obj, 603 &chan.dfs_ch_freq, 604 1, DFS_NOL_SET); 605 } 606 } 607 #undef TIME_IN_MS 608 dfs_nol_update(dfs); 609 } 610 #else 611 #ifdef CONFIG_CHAN_NUM_API 612 void dfs_set_nol(struct wlan_dfs *dfs, 613 struct dfsreq_nolelem *dfs_nol, 614 int nchan) 615 { 616 #define TIME_IN_MS 1000 617 uint32_t nol_time_left_ms; 618 struct dfs_channel chan; 619 int i; 620 uint8_t chan_num; 621 622 if (!dfs) { 623 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 624 return; 625 } 626 627 for (i = 0; i < nchan; i++) { 628 nol_time_left_ms = qdf_do_div(qdf_get_monotonic_boottime() - 629 dfs_nol[i].nol_start_us, 1000); 630 631 if (nol_time_left_ms < dfs_nol[i].nol_timeout_ms) { 632 chan.dfs_ch_freq = dfs_nol[i].nol_freq; 633 chan.dfs_ch_flags = 0; 634 chan.dfs_ch_flagext = 0; 635 nol_time_left_ms = 636 (dfs_nol[i].nol_timeout_ms - nol_time_left_ms); 637 638 DFS_NOL_ADD_CHAN_LOCKED(dfs, chan.dfs_ch_freq, 639 (nol_time_left_ms / TIME_IN_MS)); 640 chan_num = utils_dfs_freq_to_chan(chan.dfs_ch_freq); 641 utils_dfs_reg_update_nol_ch(dfs->dfs_pdev_obj, 642 &chan_num, 1, DFS_NOL_SET); 643 } 644 } 645 #undef TIME_IN_MS 646 dfs_nol_update(dfs); 647 } 648 #endif 649 #endif 650 651 void dfs_nol_addchan(struct wlan_dfs *dfs, 652 uint16_t freq, 653 uint32_t dfs_nol_timeout) 654 { 655 #define TIME_IN_MS 1000 656 #define TIME_IN_US (TIME_IN_MS * 1000) 657 struct dfs_nolelem *nol, *elem, *prev; 658 /* For now, assume all events are 20MHz wide. */ 659 int ch_width = 20; 660 661 if (!dfs) { 662 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs is NULL"); 663 return; 664 } 665 nol = dfs->dfs_nol; 666 prev = dfs->dfs_nol; 667 elem = NULL; 668 while (nol) { 669 if ((nol->nol_freq == freq) && 670 (nol->nol_chwidth == ch_width)) { 671 nol->nol_start_us = qdf_get_monotonic_boottime(); 672 nol->nol_timeout_ms = dfs_nol_timeout * TIME_IN_MS; 673 674 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 675 "Update OS Ticks for NOL %d MHz / %d MHz", 676 nol->nol_freq, nol->nol_chwidth); 677 678 qdf_timer_stop(&nol->nol_timer); 679 qdf_timer_mod(&nol->nol_timer, 680 dfs_nol_timeout * TIME_IN_MS); 681 return; 682 } 683 prev = nol; 684 nol = nol->nol_next; 685 } 686 687 /* Add a new element to the NOL. */ 688 elem = (struct dfs_nolelem *)qdf_mem_malloc(sizeof(struct dfs_nolelem)); 689 if (!elem) 690 goto bad; 691 692 qdf_mem_zero(elem, sizeof(*elem)); 693 elem->nol_dfs = dfs; 694 elem->nol_freq = freq; 695 elem->nol_chwidth = ch_width; 696 elem->nol_start_us = qdf_get_monotonic_boottime(); 697 elem->nol_timeout_ms = dfs_nol_timeout*TIME_IN_MS; 698 elem->nol_next = NULL; 699 if (prev) { 700 prev->nol_next = elem; 701 } else { 702 /* This is the first element in the NOL. */ 703 dfs->dfs_nol = elem; 704 } 705 706 qdf_timer_init(NULL, 707 &elem->nol_timer, dfs_remove_from_nol, 708 elem, QDF_TIMER_TYPE_WAKE_APPS); 709 710 qdf_timer_mod(&elem->nol_timer, dfs_nol_timeout * TIME_IN_MS); 711 712 /* Update the NOL counter. */ 713 dfs->dfs_nol_count++; 714 715 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, 716 "new NOL channel %d MHz / %d MHz", 717 elem->nol_freq, elem->nol_chwidth); 718 return; 719 720 bad: 721 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL | WLAN_DEBUG_DFS, 722 "failed to allocate memory for nol entry"); 723 724 #undef TIME_IN_MS 725 #undef TIME_IN_US 726 } 727 728 void dfs_get_nol_chfreq_and_chwidth(struct dfsreq_nolelem *dfs_nol, 729 uint32_t *nol_chfreq, 730 uint32_t *nol_chwidth, 731 int index) 732 { 733 if (!dfs_nol) 734 return; 735 736 *nol_chfreq = dfs_nol[index].nol_freq; 737 *nol_chwidth = dfs_nol[index].nol_chwidth; 738 } 739 740 void dfs_nol_update(struct wlan_dfs *dfs) 741 { 742 struct dfsreq_nolelem *dfs_nol; 743 int nlen; 744 745 if (!dfs->dfs_nol_count) { 746 dfs_debug(dfs, WLAN_DEBUG_DFS_NOL, "dfs_nol_count is zero"); 747 dfs_mlme_clist_update(dfs->dfs_pdev_obj, NULL, 0); 748 return; 749 } 750 751 /* 752 * Allocate enough entries to store the NOL. At least on Linux 753 * (don't ask why), if you allocate a 0 entry array, the 754 * returned pointer is 0x10. Make sure you're aware of this 755 * when you start debugging. 756 */ 757 dfs_nol = (struct dfsreq_nolelem *)qdf_mem_malloc( 758 sizeof(struct dfsreq_nolelem) * dfs->dfs_nol_count); 759 760 /* 761 * XXX TODO: if this fails, just schedule a task to retry 762 * updating the NOL at a later stage. That way the NOL 763 * update _DOES_ happen - hopefully the failure was just 764 * temporary. 765 */ 766 if (!dfs_nol) 767 return; 768 769 DFS_GET_NOL_LOCKED(dfs, dfs_nol, &nlen); 770 771 /* Be suitably paranoid for now. */ 772 if (nlen != dfs->dfs_nol_count) 773 dfs_info(NULL, WLAN_DEBUG_DFS_ALWAYS, "nlen (%d) != dfs->dfs_nol_count (%d)!", 774 nlen, dfs->dfs_nol_count); 775 776 /* 777 * Call the driver layer to have it recalculate the NOL flags 778 * for each driver/umac channel. If the list is empty, pass 779 * NULL instead of dfs_nol. The operating system may have some 780 * special representation for "malloc a 0 byte memory region" 781 * - for example, Linux 2.6.38-13 (ubuntu) returns 0x10 rather 782 * than a valid allocation (and is likely not NULL so the 783 * pointer doesn't match NULL checks in any later code. 784 */ 785 dfs_mlme_clist_update(dfs->dfs_pdev_obj, 786 (nlen > 0) ? dfs_nol : NULL, 787 nlen); 788 789 qdf_mem_free(dfs_nol); 790 } 791 792 void dfs_nol_free_list(struct wlan_dfs *dfs) 793 { 794 struct dfs_nolelem *nol = dfs->dfs_nol, *prev; 795 796 while (nol) { 797 prev = nol; 798 nol = nol->nol_next; 799 qdf_mem_free(prev); 800 /* Update the NOL counter. */ 801 dfs->dfs_nol_count--; 802 803 if (dfs->dfs_nol_count < 0) { 804 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "dfs_nol_count < 0"); 805 ASSERT(0); 806 } 807 } 808 809 dfs->dfs_nol = NULL; 810 } 811 812 #ifdef CONFIG_CHAN_FREQ_API 813 void dfs_nol_timer_cleanup(struct wlan_dfs *dfs) 814 { 815 struct dfs_nolelem *nol; 816 uint16_t nol_freq; 817 818 while (true) { 819 WLAN_DFSNOL_LOCK(dfs); 820 821 nol = dfs->dfs_nol; 822 if (nol) { 823 dfs->dfs_nol = nol->nol_next; 824 dfs->dfs_nol_count--; 825 nol_freq = nol->nol_freq; 826 WLAN_DFSNOL_UNLOCK(dfs); 827 utils_dfs_reg_update_nol_chan_for_freq( 828 dfs->dfs_pdev_obj, 829 &nol_freq, 830 1, 831 DFS_NOL_RESET); 832 833 qdf_timer_free(&nol->nol_timer); 834 qdf_mem_free(nol); 835 } else { 836 WLAN_DFSNOL_UNLOCK(dfs); 837 break; 838 } 839 } 840 } 841 #else 842 #ifdef CONFIG_CHAN_NUM_API 843 void dfs_nol_timer_cleanup(struct wlan_dfs *dfs) 844 { 845 struct dfs_nolelem *nol; 846 uint8_t nol_chan; 847 848 while (true) { 849 WLAN_DFSNOL_LOCK(dfs); 850 851 nol = dfs->dfs_nol; 852 if (nol) { 853 dfs->dfs_nol = nol->nol_next; 854 dfs->dfs_nol_count--; 855 nol_chan = utils_dfs_freq_to_chan(nol->nol_freq); 856 WLAN_DFSNOL_UNLOCK(dfs); 857 utils_dfs_reg_update_nol_ch(dfs->dfs_pdev_obj, 858 &nol_chan, 859 1, 860 DFS_NOL_RESET); 861 862 qdf_timer_free(&nol->nol_timer); 863 qdf_mem_free(nol); 864 } else { 865 WLAN_DFSNOL_UNLOCK(dfs); 866 break; 867 } 868 } 869 } 870 #endif 871 #endif 872 873 void dfs_nol_workqueue_cleanup(struct wlan_dfs *dfs) 874 { 875 qdf_flush_work(&dfs->dfs_nol_elem_free_work); 876 } 877 878 int dfs_get_use_nol(struct wlan_dfs *dfs) 879 { 880 return dfs->dfs_use_nol; 881 } 882 883 int dfs_get_nol_timeout(struct wlan_dfs *dfs) 884 { 885 return dfs->wlan_dfs_nol_timeout; 886 } 887 888 void dfs_getnol(struct wlan_dfs *dfs, void *dfs_nolinfo) 889 { 890 struct dfsreq_nolinfo *nolinfo = (struct dfsreq_nolinfo *)dfs_nolinfo; 891 892 DFS_GET_NOL_LOCKED(dfs, nolinfo->dfs_nol, &(nolinfo->dfs_ch_nchans)); 893 } 894 895 #if !defined(QCA_MCL_DFS_SUPPORT) 896 #ifdef CONFIG_CHAN_FREQ_API 897 void dfs_clear_nolhistory(struct wlan_dfs *dfs) 898 { 899 struct dfs_channel *chan_list; 900 int nchans; 901 bool sta_opmode; 902 int i; 903 qdf_freq_t *nol_freq_list = NULL; 904 int num_nol_history_chans; 905 906 if (!dfs->dfs_is_stadfs_enabled) 907 return; 908 909 sta_opmode = dfs_mlme_is_opmode_sta(dfs->dfs_pdev_obj); 910 if (!sta_opmode) 911 return; 912 913 nchans = dfs_get_num_chans(); 914 915 if (!nchans) { 916 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "zero chans"); 917 return; 918 } 919 920 chan_list = qdf_mem_malloc(nchans * sizeof(*chan_list)); 921 if (!chan_list) 922 return; 923 924 utils_dfs_get_nol_history_chan_list(dfs->dfs_pdev_obj, 925 (void *)chan_list, 926 &num_nol_history_chans); 927 928 if (!num_nol_history_chans) { 929 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "zero chans"); 930 qdf_mem_free(chan_list); 931 return; 932 } 933 934 if (num_nol_history_chans > nchans) 935 num_nol_history_chans = nchans; 936 937 nol_freq_list = 938 qdf_mem_malloc(num_nol_history_chans * sizeof(qdf_freq_t)); 939 940 if (!nol_freq_list) { 941 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "Unable to alloc memory for freq list"); 942 qdf_mem_free(chan_list); 943 return; 944 } 945 946 for (i = 0; i < num_nol_history_chans; i++) 947 nol_freq_list[i] = chan_list[i].dfs_ch_freq; 948 949 utils_dfs_reg_update_nol_history_chan_for_freq(dfs->dfs_pdev_obj, 950 nol_freq_list, 951 num_nol_history_chans, 952 DFS_NOL_HISTORY_RESET); 953 qdf_mem_free(chan_list); 954 qdf_mem_free(nol_freq_list); 955 } 956 #else 957 #ifdef CONFIG_CHAN_NUM_API 958 void dfs_clear_nolhistory(struct wlan_dfs *dfs) 959 { 960 struct dfs_channel *chan_list; 961 int nchans; 962 bool sta_opmode; 963 int i; 964 uint8_t *nol_chan_ieee_list = NULL; 965 int num_nol_history_chans; 966 967 if (!dfs->dfs_is_stadfs_enabled) 968 return; 969 970 sta_opmode = dfs_mlme_is_opmode_sta(dfs->dfs_pdev_obj); 971 if (!sta_opmode) 972 return; 973 974 nchans = dfs_get_num_chans(); 975 976 if (!nchans) { 977 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "zero chans"); 978 return; 979 } 980 981 chan_list = qdf_mem_malloc(nchans * sizeof(*chan_list)); 982 if (!chan_list) 983 return; 984 985 utils_dfs_get_nol_history_chan_list(dfs->dfs_pdev_obj, 986 (void *)chan_list, 987 &num_nol_history_chans); 988 989 if (!num_nol_history_chans) { 990 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "zero chans"); 991 qdf_mem_free(chan_list); 992 return; 993 } 994 995 if (num_nol_history_chans > nchans) 996 num_nol_history_chans = nchans; 997 998 nol_chan_ieee_list = 999 qdf_mem_malloc(num_nol_history_chans * sizeof(uint8_t)); 1000 1001 if (!nol_chan_ieee_list) { 1002 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, "Unable to alloc memory for ieee list"); 1003 qdf_mem_free(chan_list); 1004 return; 1005 } 1006 1007 for (i = 0; i < num_nol_history_chans; i++) 1008 nol_chan_ieee_list[i] = chan_list[i].dfs_ch_ieee; 1009 1010 utils_dfs_reg_update_nol_history_ch(dfs->dfs_pdev_obj, 1011 nol_chan_ieee_list, 1012 num_nol_history_chans, 1013 DFS_NOL_HISTORY_RESET); 1014 1015 qdf_mem_free(chan_list); 1016 qdf_mem_free(nol_chan_ieee_list); 1017 } 1018 #endif 1019 #endif 1020 #endif 1021 1022 #if defined(WLAN_DFS_PARTIAL_OFFLOAD) && defined(HOST_DFS_SPOOF_TEST) && \ 1023 defined(CONFIG_CHAN_FREQ_API) 1024 void dfs_remove_spoof_channel_from_nol(struct wlan_dfs *dfs) 1025 { 1026 struct dfs_nolelem *nol; 1027 uint16_t freq_list[NUM_CHANNELS_160MHZ]; 1028 int i, nchans = 0; 1029 1030 nchans = dfs_get_bonding_channels_for_freq(dfs, 1031 &dfs->dfs_radar_found_chan, 1032 SEG_ID_PRIMARY, 1033 DETECTOR_ID_0, 1034 freq_list); 1035 1036 WLAN_DFSNOL_LOCK(dfs); 1037 for (i = 0; i < nchans && i < NUM_CHANNELS_160MHZ; i++) { 1038 nol = dfs->dfs_nol; 1039 while (nol) { 1040 if (nol->nol_freq == freq_list[i]) { 1041 OS_SET_TIMER(&nol->nol_timer, 0); 1042 break; 1043 } 1044 nol = nol->nol_next; 1045 } 1046 } 1047 WLAN_DFSNOL_UNLOCK(dfs); 1048 1049 utils_dfs_reg_update_nol_chan_for_freq(dfs->dfs_pdev_obj, 1050 freq_list, nchans, DFS_NOL_RESET); 1051 } 1052 #else 1053 #if defined(WLAN_DFS_PARTIAL_OFFLOAD) && defined(HOST_DFS_SPOOF_TEST) && \ 1054 defined(CONFIG_CHAN_NUM_API) 1055 void dfs_remove_spoof_channel_from_nol(struct wlan_dfs *dfs) 1056 { 1057 struct dfs_nolelem *nol; 1058 uint8_t channels[NUM_CHANNELS_160MHZ]; 1059 int i, nchans = 0; 1060 1061 nchans = dfs_get_bonding_channels(dfs, 1062 &dfs->dfs_radar_found_chan, 1063 SEG_ID_PRIMARY, 1064 DETECTOR_ID_0, 1065 channels); 1066 1067 WLAN_DFSNOL_LOCK(dfs); 1068 for (i = 0; i < nchans && i < NUM_CHANNELS_160MHZ; i++) { 1069 nol = dfs->dfs_nol; 1070 while (nol) { 1071 if (nol->nol_freq == (uint16_t)utils_dfs_chan_to_freq( 1072 channels[i])) { 1073 OS_SET_TIMER(&nol->nol_timer, 0); 1074 break; 1075 } 1076 nol = nol->nol_next; 1077 } 1078 } 1079 WLAN_DFSNOL_UNLOCK(dfs); 1080 1081 utils_dfs_reg_update_nol_ch(dfs->dfs_pdev_obj, 1082 channels, nchans, DFS_NOL_RESET); 1083 } 1084 #endif 1085 #endif 1086 1087 void dfs_init_tmp_psoc_nol(struct wlan_dfs *dfs, uint8_t num_radios) 1088 { 1089 struct dfs_soc_priv_obj *dfs_soc_obj = dfs->dfs_soc_obj; 1090 1091 if (WLAN_UMAC_MAX_PDEVS < num_radios) { 1092 dfs_err(dfs, WLAN_DEBUG_DFS_ALWAYS, 1093 "num_radios (%u) exceeds limit", num_radios); 1094 return; 1095 } 1096 1097 /* Allocate the temporary psoc NOL copy structure for the number 1098 * of radios provided. 1099 */ 1100 dfs_soc_obj->dfs_psoc_nolinfo = 1101 qdf_mem_malloc(sizeof(struct dfsreq_nolinfo) * num_radios); 1102 } 1103 1104 void dfs_deinit_tmp_psoc_nol(struct wlan_dfs *dfs) 1105 { 1106 struct dfs_soc_priv_obj *dfs_soc_obj = dfs->dfs_soc_obj; 1107 1108 if (!dfs_soc_obj->dfs_psoc_nolinfo) 1109 return; 1110 1111 qdf_mem_free(dfs_soc_obj->dfs_psoc_nolinfo); 1112 dfs_soc_obj->dfs_psoc_nolinfo = NULL; 1113 } 1114 1115 void dfs_save_dfs_nol_in_psoc(struct wlan_dfs *dfs, 1116 uint8_t pdev_id) 1117 { 1118 struct dfs_soc_priv_obj *dfs_soc_obj = dfs->dfs_soc_obj; 1119 struct dfsreq_nolinfo tmp_nolinfo, *nolinfo; 1120 uint32_t i, num_chans = 0; 1121 1122 if (!dfs->dfs_nol_count) 1123 return; 1124 1125 if (!dfs_soc_obj->dfs_psoc_nolinfo) 1126 return; 1127 1128 nolinfo = &dfs_soc_obj->dfs_psoc_nolinfo[pdev_id]; 1129 /* Fetch the NOL entries for the DFS object. */ 1130 dfs_getnol(dfs, &tmp_nolinfo); 1131 1132 /* nolinfo might already have some data. Do not overwrite it */ 1133 num_chans = nolinfo->dfs_ch_nchans; 1134 for (i = 0; i < tmp_nolinfo.dfs_ch_nchans; i++) { 1135 /* Figure out the completed duration of each NOL. */ 1136 uint32_t nol_completed_ms = qdf_do_div( 1137 qdf_get_monotonic_boottime() - 1138 tmp_nolinfo.dfs_nol[i].nol_start_us, 1000); 1139 1140 nolinfo->dfs_nol[num_chans] = tmp_nolinfo.dfs_nol[i]; 1141 /* Remember the remaining NOL time in the timeout 1142 * variable. 1143 */ 1144 nolinfo->dfs_nol[num_chans++].nol_timeout_ms -= 1145 nol_completed_ms; 1146 } 1147 1148 nolinfo->dfs_ch_nchans = num_chans; 1149 } 1150 1151 void dfs_reinit_nol_from_psoc_copy(struct wlan_dfs *dfs, 1152 uint8_t pdev_id, 1153 uint16_t low_5ghz_freq, 1154 uint16_t high_5ghz_freq) 1155 { 1156 struct dfs_soc_priv_obj *dfs_soc_obj = dfs->dfs_soc_obj; 1157 struct dfsreq_nolinfo *nol, req_nol; 1158 uint8_t i, j = 0; 1159 1160 if (!dfs_soc_obj->dfs_psoc_nolinfo) 1161 return; 1162 1163 if (!dfs_soc_obj->dfs_psoc_nolinfo[pdev_id].dfs_ch_nchans) 1164 return; 1165 1166 nol = &dfs_soc_obj->dfs_psoc_nolinfo[pdev_id]; 1167 1168 for (i = 0; i < nol->dfs_ch_nchans; i++) { 1169 uint16_t tmp_freq = nol->dfs_nol[i].nol_freq; 1170 1171 /* Add to nol only if within the tgt pdev's frequency range. */ 1172 if ((low_5ghz_freq < tmp_freq) && (high_5ghz_freq > tmp_freq)) { 1173 /* The NOL timeout value in each entry points to the 1174 * remaining time of the NOL. This is to indicate that 1175 * the NOL entries are paused and are not left to 1176 * continue. 1177 * While adding these NOL, update the start ticks to 1178 * current time to avoid losing entries which might 1179 * have timed out during the pause and resume mechanism. 1180 */ 1181 nol->dfs_nol[i].nol_start_us = 1182 qdf_get_monotonic_boottime(); 1183 req_nol.dfs_nol[j++] = nol->dfs_nol[i]; 1184 } 1185 } 1186 dfs_set_nol(dfs, req_nol.dfs_nol, j); 1187 } 1188