1 /* 2 * Copyright (c) 2017-2021 The Linux Foundation. All rights reserved. 3 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for 6 * any purpose with or without fee is hereby granted, provided that the 7 * above copyright notice and this permission notice appear in all 8 * copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 13 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 14 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 15 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 16 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* 21 * DOC: Defines scan utility functions 22 */ 23 24 #include <wlan_cmn.h> 25 #include <wlan_scan_ucfg_api.h> 26 #include <wlan_scan_utils_api.h> 27 #include <../../core/src/wlan_scan_cache_db.h> 28 #include <../../core/src/wlan_scan_main.h> 29 #include <wlan_reg_services_api.h> 30 #if defined(WLAN_SAE_SINGLE_PMK) && defined(WLAN_FEATURE_ROAM_OFFLOAD) 31 #include <wlan_mlme_api.h> 32 #endif 33 #ifdef WLAN_FEATURE_11BE_MLO 34 #include <wlan_utility.h> 35 #include "wlan_mlo_mgr_public_structs.h" 36 #include <utils_mlo.h> 37 #endif 38 #include "wlan_psoc_mlme_api.h" 39 #include "reg_services_public_struct.h" 40 41 #define MAX_IE_LEN 1024 42 #define SHORT_SSID_LEN 4 43 #define NEIGHBOR_AP_LEN 1 44 #define BSS_PARAMS_LEN 1 45 46 const char* 47 util_scan_get_ev_type_name(enum scan_event_type type) 48 { 49 static const char * const event_name[] = { 50 [SCAN_EVENT_TYPE_STARTED] = "STARTED", 51 [SCAN_EVENT_TYPE_COMPLETED] = "COMPLETED", 52 [SCAN_EVENT_TYPE_BSS_CHANNEL] = "HOME_CHANNEL", 53 [SCAN_EVENT_TYPE_FOREIGN_CHANNEL] = "FOREIGN_CHANNEL", 54 [SCAN_EVENT_TYPE_DEQUEUED] = "DEQUEUED", 55 [SCAN_EVENT_TYPE_PREEMPTED] = "PREEMPTED", 56 [SCAN_EVENT_TYPE_START_FAILED] = "START_FAILED", 57 [SCAN_EVENT_TYPE_RESTARTED] = "RESTARTED", 58 [SCAN_EVENT_TYPE_FOREIGN_CHANNEL_EXIT] = "FOREIGN_CHANNEL_EXIT", 59 [SCAN_EVENT_TYPE_SUSPENDED] = "SUSPENDED", 60 [SCAN_EVENT_TYPE_RESUMED] = "RESUMED", 61 [SCAN_EVENT_TYPE_NLO_COMPLETE] = "NLO_COMPLETE", 62 [SCAN_EVENT_TYPE_NLO_MATCH] = "NLO_MATCH", 63 [SCAN_EVENT_TYPE_INVALID] = "INVALID", 64 [SCAN_EVENT_TYPE_GPIO_TIMEOUT] = "GPIO_TIMEOUT", 65 [SCAN_EVENT_TYPE_RADIO_MEASUREMENT_START] = 66 "RADIO_MEASUREMENT_START", 67 [SCAN_EVENT_TYPE_RADIO_MEASUREMENT_END] = 68 "RADIO_MEASUREMENT_END", 69 [SCAN_EVENT_TYPE_BSSID_MATCH] = "BSSID_MATCH", 70 [SCAN_EVENT_TYPE_FOREIGN_CHANNEL_GET_NF] = 71 "FOREIGN_CHANNEL_GET_NF", 72 }; 73 74 if (type >= SCAN_EVENT_TYPE_MAX) 75 return "UNKNOWN"; 76 77 return event_name[type]; 78 } 79 80 81 const char* 82 util_scan_get_ev_reason_name(enum scan_completion_reason reason) 83 { 84 static const char * const reason_name[] = { 85 [SCAN_REASON_NONE] = "NONE", 86 [SCAN_REASON_COMPLETED] = "COMPLETED", 87 [SCAN_REASON_CANCELLED] = "CANCELLED", 88 [SCAN_REASON_PREEMPTED] = "PREEMPTED", 89 [SCAN_REASON_TIMEDOUT] = "TIMEDOUT", 90 [SCAN_REASON_INTERNAL_FAILURE] = "INTERNAL_FAILURE", 91 [SCAN_REASON_SUSPENDED] = "SUSPENDED", 92 [SCAN_REASON_RUN_FAILED] = "RUN_FAILED", 93 [SCAN_REASON_TERMINATION_FUNCTION] = "TERMINATION_FUNCTION", 94 [SCAN_REASON_MAX_OFFCHAN_RETRIES] = "MAX_OFFCHAN_RETRIES", 95 [SCAN_REASON_DFS_VIOLATION] = "DFS_NOL_VIOLATION", 96 }; 97 98 if (reason >= SCAN_REASON_MAX) 99 return "UNKNOWN"; 100 101 return reason_name[reason]; 102 } 103 104 qdf_time_t 105 util_get_last_scan_time(struct wlan_objmgr_vdev *vdev) 106 { 107 uint8_t pdev_id; 108 struct wlan_scan_obj *scan_obj; 109 110 if (!vdev) { 111 scm_warn("null vdev"); 112 QDF_ASSERT(0); 113 return 0; 114 } 115 pdev_id = wlan_scan_vdev_get_pdev_id(vdev); 116 scan_obj = wlan_vdev_get_scan_obj(vdev); 117 118 if (scan_obj) 119 return scan_obj->pdev_info[pdev_id].last_scan_time; 120 else 121 return 0; 122 } 123 124 enum wlan_band util_scan_scm_freq_to_band(uint16_t freq) 125 { 126 if (WLAN_REG_IS_24GHZ_CH_FREQ(freq)) 127 return WLAN_BAND_2_4_GHZ; 128 129 return WLAN_BAND_5_GHZ; 130 } 131 132 bool util_is_scan_entry_match( 133 struct scan_cache_entry *entry1, 134 struct scan_cache_entry *entry2) 135 { 136 137 if (entry1->cap_info.wlan_caps.ess != 138 entry2->cap_info.wlan_caps.ess) 139 return false; 140 141 if (entry1->cap_info.wlan_caps.ess && 142 !qdf_mem_cmp(entry1->bssid.bytes, 143 entry2->bssid.bytes, QDF_MAC_ADDR_SIZE)) { 144 /* Check for BSS */ 145 if (util_is_ssid_match(&entry1->ssid, &entry2->ssid) || 146 util_scan_is_null_ssid(&entry1->ssid) || 147 util_scan_is_null_ssid(&entry2->ssid)) 148 return true; 149 } else if (entry1->cap_info.wlan_caps.ibss && 150 (entry1->channel.chan_freq == 151 entry2->channel.chan_freq)) { 152 /* 153 * Same channel cannot have same SSID for 154 * different IBSS, so no need to check BSSID 155 */ 156 if (util_is_ssid_match( 157 &entry1->ssid, &entry2->ssid)) 158 return true; 159 } else if (!entry1->cap_info.wlan_caps.ibss && 160 !entry1->cap_info.wlan_caps.ess && 161 !qdf_mem_cmp(entry1->bssid.bytes, 162 entry2->bssid.bytes, QDF_MAC_ADDR_SIZE)) { 163 /* In case of P2P devices, ess and ibss will be set to zero */ 164 return true; 165 } 166 167 return false; 168 } 169 170 static bool util_is_pureg_rate(uint8_t *rates, uint8_t nrates) 171 { 172 static const uint8_t g_rates[] = {12, 18, 24, 36, 48, 72, 96, 108}; 173 bool pureg = false; 174 uint8_t i, j; 175 176 for (i = 0; i < nrates; i++) { 177 for (j = 0; j < QDF_ARRAY_SIZE(g_rates); j++) { 178 if (WLAN_RV(rates[i]) == g_rates[j]) { 179 pureg = true; 180 break; 181 } 182 } 183 if (pureg) 184 break; 185 } 186 187 return pureg; 188 } 189 190 #ifdef WLAN_FEATURE_11BE 191 static enum wlan_phymode 192 util_scan_get_phymode_11be(struct wlan_objmgr_pdev *pdev, 193 struct scan_cache_entry *scan_params, 194 enum wlan_phymode phymode, 195 uint8_t band_mask) 196 { 197 struct wlan_ie_ehtops *eht_ops; 198 uint8_t width; 199 200 eht_ops = (struct wlan_ie_ehtops *)util_scan_entry_ehtop(scan_params); 201 if (!util_scan_entry_ehtcap(scan_params) || !eht_ops) 202 return phymode; 203 204 if (QDF_GET_BITS(eht_ops->ehtop_param, 205 EHTOP_INFO_PRESENT_IDX, EHTOP_INFO_PRESENT_BITS)) { 206 width = QDF_GET_BITS(eht_ops->control, 207 EHTOP_INFO_CHAN_WIDTH_IDX, 208 EHTOP_INFO_CHAN_WIDTH_BITS); 209 switch (width) { 210 case WLAN_EHT_CHWIDTH_20: 211 phymode = WLAN_PHYMODE_11BEA_EHT20; 212 break; 213 case WLAN_EHT_CHWIDTH_40: 214 phymode = WLAN_PHYMODE_11BEA_EHT40; 215 break; 216 case WLAN_EHT_CHWIDTH_80: 217 phymode = WLAN_PHYMODE_11BEA_EHT80; 218 break; 219 case WLAN_EHT_CHWIDTH_160: 220 phymode = WLAN_PHYMODE_11BEA_EHT160; 221 break; 222 case WLAN_EHT_CHWIDTH_320: 223 phymode = WLAN_PHYMODE_11BEA_EHT320; 224 break; 225 default: 226 scm_debug("Invalid eht_ops width: %d", width); 227 phymode = WLAN_PHYMODE_11BEA_EHT20; 228 break; 229 } 230 } else { 231 switch (phymode) { 232 case WLAN_PHYMODE_11AXA_HE20: 233 phymode = WLAN_PHYMODE_11BEA_EHT20; 234 break; 235 case WLAN_PHYMODE_11AXG_HE20: 236 phymode = WLAN_PHYMODE_11BEG_EHT20; 237 break; 238 case WLAN_PHYMODE_11AXA_HE40: 239 phymode = WLAN_PHYMODE_11BEA_EHT40; 240 break; 241 case WLAN_PHYMODE_11AXG_HE40: 242 phymode = WLAN_PHYMODE_11BEG_EHT40; 243 break; 244 case WLAN_PHYMODE_11AXA_HE80: 245 phymode = WLAN_PHYMODE_11BEA_EHT80; 246 break; 247 case WLAN_PHYMODE_11AXA_HE160: 248 phymode = WLAN_PHYMODE_11BEA_EHT160; 249 break; 250 default: 251 break; 252 } 253 } 254 255 if (QDF_GET_BITS(eht_ops->ehtop_param, 256 EHTOP_INFO_PRESENT_IDX, EHTOP_INFO_PRESENT_BITS)) { 257 scan_params->channel.cfreq0 = 258 wlan_reg_chan_band_to_freq(pdev, 259 eht_ops->ccfs0, 260 band_mask); 261 scan_params->channel.cfreq1 = 262 wlan_reg_chan_band_to_freq(pdev, 263 eht_ops->ccfs1, 264 band_mask); 265 } 266 267 if (QDF_GET_BITS(eht_ops->ehtop_param, 268 EHTOP_PARAM_DISABLED_SC_BITMAP_PRESENT_IDX, 269 EHTOP_PARAM_DISABLED_SC_BITMAP_PRESENT_BITS)) { 270 scan_params->channel.puncture_bitmap = 271 QDF_GET_BITS(eht_ops->disabled_sub_chan_bitmap[0], 272 0, 8); 273 scan_params->channel.puncture_bitmap |= 274 QDF_GET_BITS(eht_ops->disabled_sub_chan_bitmap[1], 275 0, 8) << 8; 276 } else { 277 scan_params->channel.puncture_bitmap = 0; 278 } 279 280 return phymode; 281 } 282 #else 283 static enum wlan_phymode 284 util_scan_get_phymode_11be(struct wlan_objmgr_pdev *pdev, 285 struct scan_cache_entry *scan_params, 286 enum wlan_phymode phymode, 287 uint8_t band_mask) 288 { 289 return phymode; 290 } 291 #endif 292 293 #ifdef CONFIG_BAND_6GHZ 294 static struct he_oper_6g_param *util_scan_get_he_6g_params(uint8_t *he_ops) 295 { 296 uint8_t len; 297 uint32_t he_oper_params; 298 299 if (!he_ops) 300 return NULL; 301 302 len = he_ops[1]; 303 he_ops += sizeof(struct ie_header); 304 305 if (len < WLAN_HEOP_FIXED_PARAM_LENGTH) 306 return NULL; 307 308 /* element id extension */ 309 he_ops++; 310 len--; 311 312 he_oper_params = LE_READ_4(he_ops); 313 if (!(he_oper_params & WLAN_HEOP_6GHZ_INFO_PRESENT_MASK)) 314 return NULL; 315 316 /* fixed params - element id extension */ 317 he_ops += WLAN_HEOP_FIXED_PARAM_LENGTH - 1; 318 len -= WLAN_HEOP_FIXED_PARAM_LENGTH - 1; 319 320 if (!len) 321 return NULL; 322 323 /* vht oper params */ 324 if (he_oper_params & WLAN_HEOP_VHTOP_PRESENT_MASK) { 325 if (len < WLAN_HEOP_VHTOP_LENGTH) 326 return NULL; 327 he_ops += WLAN_HEOP_VHTOP_LENGTH; 328 len -= WLAN_HEOP_VHTOP_LENGTH; 329 } 330 331 if (!len) 332 return NULL; 333 334 if (he_oper_params & WLAN_HEOP_CO_LOCATED_BSS_MASK) { 335 he_ops += WLAN_HEOP_CO_LOCATED_BSS_LENGTH; 336 len -= WLAN_HEOP_CO_LOCATED_BSS_LENGTH; 337 } 338 339 if (len < sizeof(struct he_oper_6g_param)) 340 return NULL; 341 342 return (struct he_oper_6g_param *)he_ops; 343 } 344 345 #ifdef WLAN_FEATURE_11BE 346 /* 347 * util_scan_is_out_of_band_leak_eht() - Check if eht beacon out of BSS BW 348 * @pdev: pointer to pdev. 349 * @scan_params: scan entry generated by beacon/probe rsp 350 * @band_mask: band mask of frequency beacon/probe rsp received 351 * @current_freq: frequency beacon/probe rsp received 352 * 353 * 1. If BSS BW <= 80MHz 354 * If Absolute value of (Current Channel Channel Center Frequency Segment 0) <= 355 * BSS BW/2 then eht beacon in BSS operating BW 356 * else eht beacon out of BSS operating BW 357 * 358 * 2. If BSS BW > 80MHz 359 * If Absolute value of (Current Channel Channel Center Frequency Segment 1) <= 360 * BSS BW/2 then eht beacon in BSS operating BW 361 * else eht beacon out of BSS operating BW 362 * 363 * Return: bool, whether eht beacon out of BSS operating BW 364 */ 365 static bool 366 util_scan_is_out_of_band_leak_eht(struct wlan_objmgr_pdev *pdev, 367 struct scan_cache_entry *scan_params, 368 uint8_t band_mask, 369 qdf_freq_t current_freq) 370 { 371 struct wlan_ie_ehtops *eht_ops; 372 uint8_t ch_width; 373 uint32_t bw; 374 uint32_t freq_diff; 375 qdf_freq_t freq_seg0; 376 qdf_freq_t freq_seg1; 377 378 eht_ops = (struct wlan_ie_ehtops *)util_scan_entry_ehtop(scan_params); 379 if (!util_scan_entry_ehtcap(scan_params) || !eht_ops) 380 return false; 381 382 if (!QDF_GET_BITS(eht_ops->ehtop_param, 383 EHTOP_INFO_PRESENT_IDX, EHTOP_INFO_PRESENT_BITS)) 384 return false; 385 386 ch_width = QDF_GET_BITS(eht_ops->control, 387 EHTOP_INFO_CHAN_WIDTH_IDX, 388 EHTOP_INFO_CHAN_WIDTH_BITS); 389 freq_seg0 = wlan_reg_chan_band_to_freq(pdev, eht_ops->ccfs0, 390 band_mask); 391 freq_seg1 = wlan_reg_chan_band_to_freq(pdev, eht_ops->ccfs1, 392 band_mask); 393 if (ch_width == WLAN_EHT_CHWIDTH_320) 394 bw = BW_320_MHZ; 395 else if (ch_width == WLAN_EHT_CHWIDTH_160) 396 bw = BW_160_MHZ; 397 else if (ch_width == WLAN_EHT_CHWIDTH_80) 398 bw = BW_80_MHZ; 399 else if (ch_width == WLAN_EHT_CHWIDTH_40) 400 bw = BW_40_MHZ; 401 else if (ch_width == WLAN_EHT_CHWIDTH_20) 402 bw = BW_20_MHZ; 403 else 404 bw = BW_20_MHZ; 405 406 if (bw <= BW_80_MHZ) 407 freq_diff = abs(freq_seg0 - current_freq); 408 else 409 freq_diff = abs(freq_seg1 - current_freq); 410 if (freq_diff <= bw / 2) 411 return false; 412 413 scm_debug("Leaked freq:%u ch width:%u freq0:%u freq1:%u", 414 current_freq, bw, freq_seg0, freq_seg1); 415 return true; 416 } 417 #else 418 static bool 419 util_scan_is_out_of_band_leak_eht(struct wlan_objmgr_pdev *pdev, 420 struct scan_cache_entry *scan_params, 421 uint8_t band_mask, 422 qdf_freq_t current_freq) 423 { 424 return false; 425 } 426 #endif 427 428 /* 429 * util_scan_is_out_of_band_leak_he() - Check if HE beacon out of BSS BW 430 * @pdev: pointer to pdev. 431 * @he_6g_params: HE 6 GHz params 432 * @band_mask: band mask of frequency beacon/probe rsp received 433 * @current_freq: frequency beacon/probe rsp received 434 * 435 * 1. If BSS BW <= 80MHz 436 * If Absolute value of (Current Channel Channel Center Frequency Segment 0) <= 437 * BSS BW/2 then HE beacon in BSS operating BW 438 * 439 * 2. If BSS BW is 160MHz 440 * If Absolute value of (Current Channel Channel Center Frequency Segment 1) <= 441 * BSS BW/2 then HE beacon in BSS operating BW 442 * 443 * 3. If BSS BW is 80+80MHz 444 * If absolute value of (Current Channel - Channel Center Frequency Segment 0) 445 * <= 40 or absolute value of (Current Channel - Channel Center Frequency 446 * Segment 1) <= 40, then HE beacon in BSS operating BW 447 * 448 * Return: bool, whether HE beacon out of BSS operating BW 449 */ 450 static bool 451 util_scan_is_out_of_band_leak_he(struct wlan_objmgr_pdev *pdev, 452 struct he_oper_6g_param *he_6g_params, 453 uint8_t band_mask, 454 qdf_freq_t current_freq) 455 { 456 uint8_t ch_width; 457 uint32_t bw; 458 uint32_t freq_diff; 459 qdf_freq_t freq_seg0; 460 qdf_freq_t freq_seg1; 461 462 ch_width = he_6g_params->width; 463 freq_seg0 = wlan_reg_chan_band_to_freq(pdev, 464 he_6g_params->chan_freq_seg0, 465 band_mask); 466 freq_seg1 = wlan_reg_chan_band_to_freq(pdev, 467 he_6g_params->chan_freq_seg1, 468 band_mask); 469 if (ch_width == WLAN_HE_6GHZ_CHWIDTH_160_80_80) 470 bw = BW_160_MHZ; 471 else if (ch_width == WLAN_HE_6GHZ_CHWIDTH_80) 472 bw = BW_80_MHZ; 473 else if (ch_width == WLAN_HE_6GHZ_CHWIDTH_40) 474 bw = BW_40_MHZ; 475 else if (ch_width == WLAN_HE_6GHZ_CHWIDTH_20) 476 bw = BW_20_MHZ; 477 else 478 bw = BW_20_MHZ; 479 480 if (bw <= BW_80_MHZ) { 481 freq_diff = abs(freq_seg0 - current_freq); 482 if (freq_diff <= bw / 2) 483 return false; 484 } else if (WLAN_IS_HE160(he_6g_params)) { 485 freq_diff = abs(freq_seg1 - current_freq); 486 if (freq_diff <= bw / 2) 487 return false; 488 } else if (WLAN_IS_HE80_80(he_6g_params)) { 489 freq_diff = abs(freq_seg0 - current_freq); 490 if (freq_diff <= BW_40_MHZ) 491 return false; 492 freq_diff = abs(freq_seg1 - current_freq); 493 if (freq_diff <= BW_40_MHZ) 494 return false; 495 } 496 497 scm_debug("Leaked freq:%u ch width:%u freq0:%u freq1:%u", 498 current_freq, bw, freq_seg0, freq_seg1); 499 500 return true; 501 } 502 503 /* 504 * util_scan_get_chan_from_he_6g_params() - Get chan info from 6 GHz param 505 * @pdev: pointer to pdev. 506 * @scan_params: scan entry generated by beacon/probe rsp 507 * @chan_freq: output parameter, primary freq from 6 GHz he params 508 * @is_6g_dup_bcon: output parameter, bool, if false, invalid 6g duplicated 509 beacon out of BSS operating BW or not duplicated beacon, can drop if 510 channel mismatch 511 * @band_mask: band mask of frequency beacon/probe rsp received 512 * @current_freq: frequency beacon/probe rsp received 513 * 514 * Return: QDF_STATUS 515 */ 516 static QDF_STATUS 517 util_scan_get_chan_from_he_6g_params(struct wlan_objmgr_pdev *pdev, 518 struct scan_cache_entry *scan_params, 519 qdf_freq_t *chan_freq, 520 bool *is_6g_dup_bcon, uint8_t band_mask, 521 qdf_freq_t current_freq) 522 { 523 struct he_oper_6g_param *he_6g_params; 524 uint8_t *he_ops; 525 struct wlan_scan_obj *scan_obj; 526 struct wlan_objmgr_psoc *psoc; 527 bool is_out_of_band_leak = true; 528 529 psoc = wlan_pdev_get_psoc(pdev); 530 if (!psoc) { 531 scm_err("psoc is NULL"); 532 return QDF_STATUS_E_INVAL; 533 } 534 535 scan_obj = wlan_psoc_get_scan_obj(psoc); 536 if (!scan_obj) { 537 scm_err("scan_obj is NULL"); 538 return QDF_STATUS_E_INVAL; 539 } 540 541 *is_6g_dup_bcon = false; 542 543 he_ops = util_scan_entry_heop(scan_params); 544 if (!util_scan_entry_hecap(scan_params) || !he_ops) 545 return QDF_STATUS_SUCCESS; 546 547 he_6g_params = util_scan_get_he_6g_params(he_ops); 548 if (!he_6g_params) 549 return QDF_STATUS_SUCCESS; 550 551 *chan_freq = wlan_reg_chan_band_to_freq(pdev, 552 he_6g_params->primary_channel, 553 band_mask); 554 if (scan_obj->drop_bcn_on_invalid_freq && 555 wlan_reg_is_disable_for_pwrmode(pdev, *chan_freq, 556 REG_BEST_PWR_MODE)) { 557 scm_debug_rl(QDF_MAC_ADDR_FMT": Drop as invalid channel %d freq %d in HE 6Ghz params", 558 QDF_MAC_ADDR_REF(scan_params->bssid.bytes), 559 he_6g_params->primary_channel, *chan_freq); 560 return QDF_STATUS_E_INVAL; 561 } 562 563 if (!he_6g_params->duplicate_beacon) { 564 *is_6g_dup_bcon = false; 565 return QDF_STATUS_SUCCESS; 566 } 567 is_out_of_band_leak = 568 util_scan_is_out_of_band_leak_eht(pdev, scan_params, band_mask, 569 current_freq); 570 if (is_out_of_band_leak) { 571 *is_6g_dup_bcon = false; 572 return QDF_STATUS_SUCCESS; 573 } 574 is_out_of_band_leak = 575 util_scan_is_out_of_band_leak_he(pdev, he_6g_params, band_mask, 576 current_freq); 577 if (is_out_of_band_leak) { 578 *is_6g_dup_bcon = false; 579 return QDF_STATUS_SUCCESS; 580 } 581 582 *is_6g_dup_bcon = true; 583 584 return QDF_STATUS_SUCCESS; 585 } 586 587 static enum wlan_phymode 588 util_scan_get_phymode_6g(struct wlan_objmgr_pdev *pdev, 589 struct scan_cache_entry *scan_params) 590 { 591 struct he_oper_6g_param *he_6g_params; 592 enum wlan_phymode phymode = WLAN_PHYMODE_11AXA_HE20; 593 uint8_t *he_ops; 594 uint8_t band_mask = BIT(REG_BAND_6G); 595 596 he_ops = util_scan_entry_heop(scan_params); 597 if (!util_scan_entry_hecap(scan_params) || !he_ops) 598 return phymode; 599 600 he_6g_params = util_scan_get_he_6g_params(he_ops); 601 if (!he_6g_params) 602 return phymode; 603 604 switch (he_6g_params->width) { 605 case WLAN_HE_6GHZ_CHWIDTH_20: 606 phymode = WLAN_PHYMODE_11AXA_HE20; 607 break; 608 case WLAN_HE_6GHZ_CHWIDTH_40: 609 phymode = WLAN_PHYMODE_11AXA_HE40; 610 break; 611 case WLAN_HE_6GHZ_CHWIDTH_80: 612 phymode = WLAN_PHYMODE_11AXA_HE80; 613 break; 614 case WLAN_HE_6GHZ_CHWIDTH_160_80_80: 615 if (WLAN_IS_HE80_80(he_6g_params)) 616 phymode = WLAN_PHYMODE_11AXA_HE80_80; 617 else if (WLAN_IS_HE160(he_6g_params)) 618 phymode = WLAN_PHYMODE_11AXA_HE160; 619 else 620 phymode = WLAN_PHYMODE_11AXA_HE80; 621 break; 622 default: 623 scm_err("Invalid he_6g_params width: %d", he_6g_params->width); 624 phymode = WLAN_PHYMODE_11AXA_HE20; 625 break; 626 } 627 628 if (he_6g_params->chan_freq_seg0) 629 scan_params->channel.cfreq0 = 630 wlan_reg_chan_band_to_freq(pdev, 631 he_6g_params->chan_freq_seg0, 632 band_mask); 633 if (he_6g_params->chan_freq_seg1) 634 scan_params->channel.cfreq1 = 635 wlan_reg_chan_band_to_freq(pdev, 636 he_6g_params->chan_freq_seg1, 637 band_mask); 638 639 phymode = util_scan_get_phymode_11be(pdev, scan_params, 640 phymode, band_mask); 641 642 return phymode; 643 } 644 645 uint8_t 646 util_scan_get_6g_oper_channel(uint8_t *he_op_ie) 647 { 648 struct he_oper_6g_param *he_6g_params; 649 650 he_6g_params = util_scan_get_he_6g_params(he_op_ie); 651 if (!he_6g_params) 652 return 0; 653 654 return he_6g_params->primary_channel; 655 } 656 657 #else 658 static QDF_STATUS 659 util_scan_get_chan_from_he_6g_params(struct wlan_objmgr_pdev *pdev, 660 struct scan_cache_entry *scan_params, 661 qdf_freq_t *chan_freq, 662 bool *is_6g_dup_bcon, 663 uint8_t band_mask, 664 qdf_freq_t current_freq) 665 { 666 return QDF_STATUS_SUCCESS; 667 } 668 static inline enum wlan_phymode 669 util_scan_get_phymode_6g(struct wlan_objmgr_pdev *pdev, 670 struct scan_cache_entry *scan_params) 671 { 672 return WLAN_PHYMODE_AUTO; 673 } 674 #endif 675 676 static inline 677 uint32_t util_scan_sec_chan_freq_from_htinfo(struct wlan_ie_htinfo_cmn *htinfo, 678 uint32_t primary_chan_freq) 679 { 680 if (htinfo->hi_extchoff == WLAN_HTINFO_EXTOFFSET_ABOVE) 681 return primary_chan_freq + WLAN_CHAN_SPACING_20MHZ; 682 else if (htinfo->hi_extchoff == WLAN_HTINFO_EXTOFFSET_BELOW) 683 return primary_chan_freq - WLAN_CHAN_SPACING_20MHZ; 684 685 return 0; 686 } 687 688 static enum wlan_phymode 689 util_scan_get_phymode_5g(struct wlan_objmgr_pdev *pdev, 690 struct scan_cache_entry *scan_params) 691 { 692 enum wlan_phymode phymode = WLAN_PHYMODE_AUTO; 693 uint16_t ht_cap = 0; 694 struct htcap_cmn_ie *htcap; 695 struct wlan_ie_htinfo_cmn *htinfo; 696 struct wlan_ie_vhtop *vhtop; 697 uint8_t band_mask = BIT(REG_BAND_5G); 698 699 htcap = (struct htcap_cmn_ie *) 700 util_scan_entry_htcap(scan_params); 701 htinfo = (struct wlan_ie_htinfo_cmn *) 702 util_scan_entry_htinfo(scan_params); 703 vhtop = (struct wlan_ie_vhtop *) 704 util_scan_entry_vhtop(scan_params); 705 706 if (!(htcap && htinfo)) 707 return WLAN_PHYMODE_11A; 708 709 if (htcap) 710 ht_cap = le16toh(htcap->hc_cap); 711 712 if (ht_cap & WLAN_HTCAP_C_CHWIDTH40) 713 phymode = WLAN_PHYMODE_11NA_HT40; 714 else 715 phymode = WLAN_PHYMODE_11NA_HT20; 716 717 scan_params->channel.cfreq0 = 718 util_scan_sec_chan_freq_from_htinfo(htinfo, 719 scan_params->channel.chan_freq); 720 721 if (util_scan_entry_vhtcap(scan_params) && vhtop) { 722 switch (vhtop->vht_op_chwidth) { 723 case WLAN_VHTOP_CHWIDTH_2040: 724 if (ht_cap & WLAN_HTCAP_C_CHWIDTH40) 725 phymode = WLAN_PHYMODE_11AC_VHT40; 726 else 727 phymode = WLAN_PHYMODE_11AC_VHT20; 728 break; 729 case WLAN_VHTOP_CHWIDTH_80: 730 if (WLAN_IS_REVSIG_VHT80_80(vhtop)) 731 phymode = WLAN_PHYMODE_11AC_VHT80_80; 732 else if (WLAN_IS_REVSIG_VHT160(vhtop)) 733 phymode = WLAN_PHYMODE_11AC_VHT160; 734 else 735 phymode = WLAN_PHYMODE_11AC_VHT80; 736 break; 737 case WLAN_VHTOP_CHWIDTH_160: 738 phymode = WLAN_PHYMODE_11AC_VHT160; 739 break; 740 case WLAN_VHTOP_CHWIDTH_80_80: 741 phymode = WLAN_PHYMODE_11AC_VHT80_80; 742 break; 743 default: 744 scm_debug("bad channel: %d", 745 vhtop->vht_op_chwidth); 746 phymode = WLAN_PHYMODE_11AC_VHT20; 747 break; 748 } 749 if (vhtop->vht_op_ch_freq_seg1) 750 scan_params->channel.cfreq0 = 751 wlan_reg_chan_band_to_freq(pdev, 752 vhtop->vht_op_ch_freq_seg1, 753 band_mask); 754 if (vhtop->vht_op_ch_freq_seg2) 755 scan_params->channel.cfreq1 = 756 wlan_reg_chan_band_to_freq(pdev, 757 vhtop->vht_op_ch_freq_seg2, 758 band_mask); 759 } 760 761 if (!util_scan_entry_hecap(scan_params)) 762 return phymode; 763 764 /* for 5Ghz Check for HE, only if VHT cap and HE cap are present */ 765 if (!IS_WLAN_PHYMODE_VHT(phymode)) 766 return phymode; 767 768 switch (phymode) { 769 case WLAN_PHYMODE_11AC_VHT20: 770 phymode = WLAN_PHYMODE_11AXA_HE20; 771 break; 772 case WLAN_PHYMODE_11AC_VHT40: 773 phymode = WLAN_PHYMODE_11AXA_HE40; 774 break; 775 case WLAN_PHYMODE_11AC_VHT80: 776 phymode = WLAN_PHYMODE_11AXA_HE80; 777 break; 778 case WLAN_PHYMODE_11AC_VHT160: 779 phymode = WLAN_PHYMODE_11AXA_HE160; 780 break; 781 case WLAN_PHYMODE_11AC_VHT80_80: 782 phymode = WLAN_PHYMODE_11AXA_HE80_80; 783 break; 784 default: 785 phymode = WLAN_PHYMODE_11AXA_HE20; 786 break; 787 } 788 789 phymode = util_scan_get_phymode_11be(pdev, scan_params, 790 phymode, band_mask); 791 792 return phymode; 793 } 794 795 #ifdef WLAN_FEATURE_11BE 796 static enum wlan_phymode 797 util_scan_get_phymode_2g_11be(struct scan_cache_entry *scan_params, 798 enum wlan_phymode phymode) 799 { 800 if (!util_scan_entry_ehtcap(scan_params)) 801 return phymode; 802 803 if (phymode == WLAN_PHYMODE_11AXG_HE40PLUS) 804 phymode = WLAN_PHYMODE_11BEG_EHT40PLUS; 805 else if (phymode == WLAN_PHYMODE_11AXG_HE40MINUS) 806 phymode = WLAN_PHYMODE_11BEG_EHT40MINUS; 807 else 808 phymode = WLAN_PHYMODE_11BEG_EHT20; 809 810 return phymode; 811 } 812 #else 813 static enum wlan_phymode 814 util_scan_get_phymode_2g_11be(struct scan_cache_entry *scan_params, 815 enum wlan_phymode phymode) 816 { 817 return phymode; 818 } 819 #endif 820 821 static enum wlan_phymode 822 util_scan_get_phymode_2g(struct scan_cache_entry *scan_params) 823 { 824 enum wlan_phymode phymode = WLAN_PHYMODE_AUTO; 825 uint16_t ht_cap = 0; 826 struct htcap_cmn_ie *htcap; 827 struct wlan_ie_htinfo_cmn *htinfo; 828 struct wlan_ie_vhtop *vhtop; 829 830 htcap = (struct htcap_cmn_ie *) 831 util_scan_entry_htcap(scan_params); 832 htinfo = (struct wlan_ie_htinfo_cmn *) 833 util_scan_entry_htinfo(scan_params); 834 vhtop = (struct wlan_ie_vhtop *) 835 util_scan_entry_vhtop(scan_params); 836 837 if (htcap) 838 ht_cap = le16toh(htcap->hc_cap); 839 840 if (htcap && htinfo) { 841 if ((ht_cap & WLAN_HTCAP_C_CHWIDTH40) && 842 (htinfo->hi_extchoff == WLAN_HTINFO_EXTOFFSET_ABOVE)) 843 phymode = WLAN_PHYMODE_11NG_HT40PLUS; 844 else if ((ht_cap & WLAN_HTCAP_C_CHWIDTH40) && 845 (htinfo->hi_extchoff == WLAN_HTINFO_EXTOFFSET_BELOW)) 846 phymode = WLAN_PHYMODE_11NG_HT40MINUS; 847 else 848 phymode = WLAN_PHYMODE_11NG_HT20; 849 } else if (util_scan_entry_xrates(scan_params)) { 850 /* only 11G stations will have more than 8 rates */ 851 phymode = WLAN_PHYMODE_11G; 852 } else { 853 /* Some mischievous g-only APs do not set extended rates */ 854 if (util_scan_entry_rates(scan_params)) { 855 if (util_is_pureg_rate(&scan_params->ie_list.rates[2], 856 scan_params->ie_list.rates[1])) 857 phymode = WLAN_PHYMODE_11G; 858 else 859 phymode = WLAN_PHYMODE_11B; 860 } else { 861 phymode = WLAN_PHYMODE_11B; 862 } 863 } 864 865 /* Check for VHT only if HT cap is present */ 866 if (!IS_WLAN_PHYMODE_HT(phymode)) 867 return phymode; 868 869 scan_params->channel.cfreq0 = 870 util_scan_sec_chan_freq_from_htinfo(htinfo, 871 scan_params->channel.chan_freq); 872 873 if (util_scan_entry_vhtcap(scan_params) && vhtop) { 874 switch (vhtop->vht_op_chwidth) { 875 case WLAN_VHTOP_CHWIDTH_2040: 876 if (phymode == WLAN_PHYMODE_11NG_HT40PLUS) 877 phymode = WLAN_PHYMODE_11AC_VHT40PLUS_2G; 878 else if (phymode == WLAN_PHYMODE_11NG_HT40MINUS) 879 phymode = WLAN_PHYMODE_11AC_VHT40MINUS_2G; 880 else 881 phymode = WLAN_PHYMODE_11AC_VHT20_2G; 882 883 break; 884 default: 885 scm_info("bad vht_op_chwidth: %d", 886 vhtop->vht_op_chwidth); 887 phymode = WLAN_PHYMODE_11AC_VHT20_2G; 888 break; 889 } 890 } 891 892 if (!util_scan_entry_hecap(scan_params)) 893 return phymode; 894 895 if (phymode == WLAN_PHYMODE_11AC_VHT40PLUS_2G || 896 phymode == WLAN_PHYMODE_11NG_HT40PLUS) 897 phymode = WLAN_PHYMODE_11AXG_HE40PLUS; 898 else if (phymode == WLAN_PHYMODE_11AC_VHT40MINUS_2G || 899 phymode == WLAN_PHYMODE_11NG_HT40MINUS) 900 phymode = WLAN_PHYMODE_11AXG_HE40MINUS; 901 else 902 phymode = WLAN_PHYMODE_11AXG_HE20; 903 904 phymode = util_scan_get_phymode_2g_11be(scan_params, phymode); 905 906 return phymode; 907 } 908 909 static enum wlan_phymode 910 util_scan_get_phymode(struct wlan_objmgr_pdev *pdev, 911 struct scan_cache_entry *scan_params) 912 { 913 if (WLAN_REG_IS_24GHZ_CH_FREQ(scan_params->channel.chan_freq)) 914 return util_scan_get_phymode_2g(scan_params); 915 else if (WLAN_REG_IS_6GHZ_CHAN_FREQ(scan_params->channel.chan_freq)) 916 return util_scan_get_phymode_6g(pdev, scan_params); 917 else 918 return util_scan_get_phymode_5g(pdev, scan_params); 919 } 920 921 static QDF_STATUS 922 util_scan_parse_chan_switch_wrapper_ie(struct scan_cache_entry *scan_params, 923 struct ie_header *sub_ie, qdf_size_t sub_ie_len) 924 { 925 /* Walk through to check nothing is malformed */ 926 while (sub_ie_len >= sizeof(struct ie_header)) { 927 /* At least one more header is present */ 928 sub_ie_len -= sizeof(struct ie_header); 929 930 if (sub_ie->ie_len == 0) { 931 sub_ie += 1; 932 continue; 933 } 934 if (sub_ie_len < sub_ie->ie_len) { 935 scm_debug_rl(QDF_MAC_ADDR_FMT": Incomplete corrupted IE:%x", 936 QDF_MAC_ADDR_REF(scan_params->bssid.bytes), 937 WLAN_ELEMID_CHAN_SWITCH_WRAP); 938 return QDF_STATUS_E_INVAL; 939 } 940 switch (sub_ie->ie_id) { 941 case WLAN_ELEMID_COUNTRY: 942 if (sub_ie->ie_len < WLAN_COUNTRY_IE_MIN_LEN) 943 return QDF_STATUS_E_INVAL; 944 scan_params->ie_list.country = (uint8_t *)sub_ie; 945 break; 946 case WLAN_ELEMID_WIDE_BAND_CHAN_SWITCH: 947 if (sub_ie->ie_len < WLAN_WIDE_BW_CHAN_SWITCH_IE_LEN) 948 return QDF_STATUS_E_INVAL; 949 scan_params->ie_list.widebw = (uint8_t *)sub_ie; 950 break; 951 case WLAN_ELEMID_VHT_TX_PWR_ENVLP: 952 if (sub_ie->ie_len > WLAN_TPE_IE_MAX_LEN) 953 return QDF_STATUS_E_INVAL; 954 scan_params->ie_list.txpwrenvlp = (uint8_t *)sub_ie; 955 break; 956 } 957 /* Consume sub info element */ 958 sub_ie_len -= sub_ie->ie_len; 959 /* go to next Sub IE */ 960 sub_ie = (struct ie_header *) 961 (((uint8_t *) sub_ie) + 962 sizeof(struct ie_header) + sub_ie->ie_len); 963 } 964 965 return QDF_STATUS_SUCCESS; 966 } 967 968 bool 969 util_scan_is_hidden_ssid(struct ie_ssid *ssid) 970 { 971 uint8_t i; 972 973 /* 974 * We flag this as Hidden SSID if the Length is 0 975 * of the SSID only contains 0's 976 */ 977 if (!ssid || !ssid->ssid_len) 978 return true; 979 980 for (i = 0; i < ssid->ssid_len; i++) 981 if (ssid->ssid[i] != 0) 982 return false; 983 984 /* All 0's */ 985 return true; 986 } 987 988 #ifdef WLAN_FEATURE_11BE_MLO 989 static void 990 util_scan_update_rnr_mld(struct rnr_bss_info *rnr, 991 struct neighbor_ap_info_field *ap_info, uint8_t *data) 992 { 993 uint8_t tbtt_info_length; 994 bool mld_info_present = false; 995 996 tbtt_info_length = ap_info->tbtt_header.tbtt_info_length; 997 if (tbtt_info_length >= 998 TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM_20MHZ_PSD_MLD_PARAM) 999 tbtt_info_length = 1000 TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM_20MHZ_PSD_MLD_PARAM; 1001 1002 switch (tbtt_info_length) { 1003 case TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM_20MHZ_PSD_MLD_PARAM: 1004 rnr->channel_number = ap_info->channel_number; 1005 rnr->operating_class = ap_info->operting_class; 1006 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1007 qdf_mem_copy(&rnr->short_ssid, &data[7], SHORT_SSID_LEN); 1008 rnr->bss_params = data[11]; 1009 rnr->psd_20mhz = data[12]; 1010 qdf_mem_copy(&rnr->mld_info, &data[13], 1011 sizeof(struct rnr_mld_info)); 1012 mld_info_present = true; 1013 break; 1014 }; 1015 1016 rnr->mld_info_valid = mld_info_present; 1017 } 1018 #else 1019 static void 1020 util_scan_update_rnr_mld(struct rnr_bss_info *rnr, 1021 struct neighbor_ap_info_field *ap_info, uint8_t *data) 1022 { 1023 scm_debug("Wrong fieldtype"); 1024 } 1025 #endif 1026 1027 static QDF_STATUS 1028 util_scan_update_rnr(struct rnr_bss_info *rnr, 1029 struct neighbor_ap_info_field *ap_info, 1030 uint8_t *data) 1031 { 1032 uint8_t tbtt_info_length; 1033 1034 tbtt_info_length = ap_info->tbtt_header.tbtt_info_length; 1035 1036 switch (tbtt_info_length) { 1037 case TBTT_NEIGHBOR_AP_OFFSET_ONLY: 1038 /* Dont store it skip*/ 1039 break; 1040 1041 case TBTT_NEIGHBOR_AP_BSS_PARAM: 1042 /* Dont store it skip*/ 1043 break; 1044 1045 case TBTT_NEIGHBOR_AP_SHORTSSID: 1046 rnr->channel_number = ap_info->channel_number; 1047 rnr->operating_class = ap_info->operting_class; 1048 qdf_mem_copy(&rnr->short_ssid, &data[1], SHORT_SSID_LEN); 1049 break; 1050 1051 case TBTT_NEIGHBOR_AP_S_SSID_BSS_PARAM: 1052 rnr->channel_number = ap_info->channel_number; 1053 rnr->operating_class = ap_info->operting_class; 1054 qdf_mem_copy(&rnr->short_ssid, &data[1], SHORT_SSID_LEN); 1055 rnr->bss_params = data[5]; 1056 break; 1057 1058 case TBTT_NEIGHBOR_AP_BSSID: 1059 rnr->channel_number = ap_info->channel_number; 1060 rnr->operating_class = ap_info->operting_class; 1061 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1062 break; 1063 1064 case TBTT_NEIGHBOR_AP_BSSID_BSS_PARAM: 1065 rnr->channel_number = ap_info->channel_number; 1066 rnr->operating_class = ap_info->operting_class; 1067 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1068 rnr->bss_params = data[7]; 1069 break; 1070 1071 case TBTT_NEIGHBOR_AP_BSSID_BSS_PARAM_20MHZ_PSD: 1072 rnr->channel_number = ap_info->channel_number; 1073 rnr->operating_class = ap_info->operting_class; 1074 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1075 rnr->bss_params = data[7]; 1076 rnr->psd_20mhz = data[8]; 1077 break; 1078 1079 case TBTT_NEIGHBOR_AP_BSSSID_S_SSID: 1080 rnr->channel_number = ap_info->channel_number; 1081 rnr->operating_class = ap_info->operting_class; 1082 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1083 qdf_mem_copy(&rnr->short_ssid, &data[7], SHORT_SSID_LEN); 1084 break; 1085 1086 case TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM: 1087 rnr->channel_number = ap_info->channel_number; 1088 rnr->operating_class = ap_info->operting_class; 1089 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1090 qdf_mem_copy(&rnr->short_ssid, &data[7], SHORT_SSID_LEN); 1091 rnr->bss_params = data[11]; 1092 break; 1093 1094 case TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM_20MHZ_PSD: 1095 rnr->channel_number = ap_info->channel_number; 1096 rnr->operating_class = ap_info->operting_class; 1097 qdf_mem_copy(&rnr->bssid, &data[1], QDF_MAC_ADDR_SIZE); 1098 qdf_mem_copy(&rnr->short_ssid, &data[7], SHORT_SSID_LEN); 1099 rnr->bss_params = data[11]; 1100 rnr->psd_20mhz = data[12]; 1101 break; 1102 1103 default: 1104 util_scan_update_rnr_mld(rnr, ap_info, data); 1105 } 1106 1107 return QDF_STATUS_SUCCESS; 1108 } 1109 1110 static QDF_STATUS 1111 util_scan_parse_rnr_ie(struct scan_cache_entry *scan_entry, 1112 struct ie_header *ie) 1113 { 1114 uint32_t rnr_ie_len; 1115 uint16_t tbtt_count, tbtt_length, i, fieldtype, idx; 1116 uint8_t *data; 1117 struct neighbor_ap_info_field *neighbor_ap_info; 1118 1119 rnr_ie_len = ie->ie_len; 1120 data = (uint8_t *)ie + sizeof(struct ie_header); 1121 idx = scan_entry->rnr.count; 1122 1123 while (data < ((uint8_t *)ie + rnr_ie_len + 2)) { 1124 neighbor_ap_info = (struct neighbor_ap_info_field *)data; 1125 tbtt_count = neighbor_ap_info->tbtt_header.tbtt_info_count; 1126 tbtt_length = neighbor_ap_info->tbtt_header.tbtt_info_length; 1127 fieldtype = neighbor_ap_info->tbtt_header.tbbt_info_fieldtype; 1128 scm_debug("channel number %d, op class %d", 1129 neighbor_ap_info->channel_number, 1130 neighbor_ap_info->operting_class); 1131 scm_debug("tbtt_count %d, tbtt_length %d, fieldtype %d", 1132 tbtt_count, tbtt_length, fieldtype); 1133 data += sizeof(struct neighbor_ap_info_field); 1134 1135 if (tbtt_count > TBTT_INFO_COUNT) 1136 break; 1137 1138 for (i = 0; i < (tbtt_count + 1) && 1139 data < ((uint8_t *)ie + rnr_ie_len + 2); i++) { 1140 if ((i < MAX_RNR_BSS) && (idx < MAX_RNR_BSS)) 1141 util_scan_update_rnr( 1142 &scan_entry->rnr.bss_info[idx++], 1143 neighbor_ap_info, 1144 data); 1145 data += tbtt_length; 1146 } 1147 } 1148 1149 scan_entry->rnr.count = idx; 1150 1151 return QDF_STATUS_SUCCESS; 1152 } 1153 1154 #ifdef WLAN_FEATURE_11BE_MLO 1155 static void 1156 util_scan_parse_t2lm_ie(struct scan_cache_entry *scan_params, 1157 struct extn_ie_header *extn_ie) 1158 { 1159 uint8_t t2lm_idx = 0; 1160 1161 if (extn_ie->ie_extn_id == WLAN_EXTN_ELEMID_T2LM) 1162 for (t2lm_idx = 0; t2lm_idx < WLAN_MAX_T2LM_IE; t2lm_idx++) { 1163 if (!scan_params->ie_list.t2lm[t2lm_idx]) { 1164 scan_params->ie_list.t2lm[t2lm_idx] = 1165 (uint8_t *)extn_ie; 1166 return; 1167 } 1168 } 1169 } 1170 #endif 1171 1172 #ifdef WLAN_FEATURE_11BE 1173 #ifdef WLAN_FEATURE_11BE_MLO 1174 static void util_scan_parse_ml_ie(struct scan_cache_entry *scan_params, 1175 struct extn_ie_header *extn_ie) 1176 { 1177 uint8_t *ml_ie; 1178 uint32_t ml_ie_len; 1179 enum wlan_ml_variant ml_variant; 1180 QDF_STATUS ret; 1181 1182 if (extn_ie->ie_extn_id != WLAN_EXTN_ELEMID_MULTI_LINK) 1183 return; 1184 1185 ml_ie = (uint8_t *)extn_ie; 1186 ml_ie_len = ml_ie[TAG_LEN_POS]; 1187 1188 /* Adding the size of IE header to ML IE length */ 1189 ml_ie_len += sizeof(struct ie_header); 1190 ret = util_get_mlie_variant(ml_ie, ml_ie_len, (int *)&ml_variant); 1191 if (ret) { 1192 scm_err("Unable to get ml variant"); 1193 return; 1194 } 1195 1196 switch (ml_variant) { 1197 case WLAN_ML_VARIANT_BASIC: 1198 scan_params->ie_list.multi_link_bv = (uint8_t *)extn_ie; 1199 break; 1200 case WLAN_ML_VARIANT_RECONFIG: 1201 scan_params->ie_list.multi_link_rv = (uint8_t *)extn_ie; 1202 break; 1203 default: 1204 break; 1205 } 1206 } 1207 #else 1208 static void util_scan_parse_ml_ie(struct scan_cache_entry *scan_params, 1209 struct extn_ie_header *extn_ie) 1210 { 1211 } 1212 #endif 1213 static void util_scan_parse_eht_ie(struct scan_cache_entry *scan_params, 1214 struct extn_ie_header *extn_ie) 1215 { 1216 switch (extn_ie->ie_extn_id) { 1217 case WLAN_EXTN_ELEMID_EHTCAP: 1218 scan_params->ie_list.ehtcap = (uint8_t *)extn_ie; 1219 break; 1220 case WLAN_EXTN_ELEMID_EHTOP: 1221 scan_params->ie_list.ehtop = (uint8_t *)extn_ie; 1222 break; 1223 default: 1224 break; 1225 } 1226 1227 util_scan_parse_ml_ie(scan_params, extn_ie); 1228 util_scan_parse_t2lm_ie(scan_params, extn_ie); 1229 } 1230 #else 1231 static void util_scan_parse_eht_ie(struct scan_cache_entry *scan_params, 1232 struct extn_ie_header *extn_ie) 1233 { 1234 } 1235 #endif 1236 1237 static QDF_STATUS 1238 util_scan_parse_extn_ie(struct scan_cache_entry *scan_params, 1239 struct ie_header *ie) 1240 { 1241 struct extn_ie_header *extn_ie = (struct extn_ie_header *) ie; 1242 1243 switch (extn_ie->ie_extn_id) { 1244 case WLAN_EXTN_ELEMID_MAX_CHAN_SWITCH_TIME: 1245 if (extn_ie->ie_len != WLAN_MAX_CHAN_SWITCH_TIME_IE_LEN) 1246 return QDF_STATUS_E_INVAL; 1247 scan_params->ie_list.mcst = (uint8_t *)ie; 1248 break; 1249 case WLAN_EXTN_ELEMID_SRP: 1250 if (extn_ie->ie_len > WLAN_MAX_SRP_IE_LEN) 1251 return QDF_STATUS_E_INVAL; 1252 scan_params->ie_list.srp = (uint8_t *)ie; 1253 break; 1254 case WLAN_EXTN_ELEMID_HECAP: 1255 scan_params->ie_list.hecap = (uint8_t *)ie; 1256 break; 1257 case WLAN_EXTN_ELEMID_HEOP: 1258 if (extn_ie->ie_len > WLAN_MAX_HEOP_IE_LEN) 1259 return QDF_STATUS_E_INVAL; 1260 scan_params->ie_list.heop = (uint8_t *)ie; 1261 break; 1262 case WLAN_EXTN_ELEMID_ESP: 1263 scan_params->ie_list.esp = (uint8_t *)ie; 1264 break; 1265 case WLAN_EXTN_ELEMID_MUEDCA: 1266 if (extn_ie->ie_len > WLAN_MAX_MUEDCA_IE_LEN) 1267 return QDF_STATUS_E_INVAL; 1268 scan_params->ie_list.muedca = (uint8_t *)ie; 1269 break; 1270 case WLAN_EXTN_ELEMID_HE_6G_CAP: 1271 if (extn_ie->ie_len > WLAN_MAX_HE_6G_CAP_IE_LEN) 1272 return QDF_STATUS_E_INVAL; 1273 scan_params->ie_list.hecap_6g = (uint8_t *)ie; 1274 break; 1275 default: 1276 break; 1277 } 1278 util_scan_parse_eht_ie(scan_params, extn_ie); 1279 1280 return QDF_STATUS_SUCCESS; 1281 } 1282 1283 static QDF_STATUS 1284 util_scan_parse_vendor_ie(struct scan_cache_entry *scan_params, 1285 struct ie_header *ie) 1286 { 1287 if (!scan_params->ie_list.vendor) 1288 scan_params->ie_list.vendor = (uint8_t *)ie; 1289 1290 if (is_wpa_oui((uint8_t *)ie)) { 1291 scan_params->ie_list.wpa = (uint8_t *)ie; 1292 } else if (is_wps_oui((uint8_t *)ie)) { 1293 scan_params->ie_list.wps = (uint8_t *)ie; 1294 /* WCN IE should be a subset of WPS IE */ 1295 if (is_wcn_oui((uint8_t *)ie)) 1296 scan_params->ie_list.wcn = (uint8_t *)ie; 1297 } else if (is_wme_param((uint8_t *)ie)) { 1298 if (ie->ie_len > WLAN_VENDOR_WME_IE_LEN) 1299 return QDF_STATUS_E_INVAL; 1300 1301 scan_params->ie_list.wmeparam = (uint8_t *)ie; 1302 } else if (is_wme_info((uint8_t *)ie)) { 1303 scan_params->ie_list.wmeinfo = (uint8_t *)ie; 1304 } else if (is_atheros_oui((uint8_t *)ie)) { 1305 if (ie->ie_len > WLAN_VENDOR_ATHCAPS_IE_LEN) 1306 return QDF_STATUS_E_INVAL; 1307 1308 scan_params->ie_list.athcaps = (uint8_t *)ie; 1309 } else if (is_atheros_extcap_oui((uint8_t *)ie)) { 1310 if (ie->ie_len > WLAN_VENDOR_ATH_EXTCAP_IE_LEN) 1311 return QDF_STATUS_E_INVAL; 1312 1313 scan_params->ie_list.athextcaps = (uint8_t *)ie; 1314 } else if (is_sfa_oui((uint8_t *)ie)) { 1315 if (ie->ie_len > WLAN_VENDOR_SFA_IE_LEN) 1316 return QDF_STATUS_E_INVAL; 1317 1318 scan_params->ie_list.sfa = (uint8_t *)ie; 1319 } else if (is_p2p_oui((uint8_t *)ie)) { 1320 scan_params->ie_list.p2p = (uint8_t *)ie; 1321 } else if (is_qca_son_oui((uint8_t *)ie, 1322 QCA_OUI_WHC_AP_INFO_SUBTYPE)) { 1323 if (ie->ie_len > WLAN_VENDOR_SON_IE_LEN) 1324 return QDF_STATUS_E_INVAL; 1325 1326 scan_params->ie_list.sonadv = (uint8_t *)ie; 1327 } else if (is_ht_cap((uint8_t *)ie)) { 1328 /* we only care if there isn't already an HT IE (ANA) */ 1329 if (!scan_params->ie_list.htcap) { 1330 if (ie->ie_len != (WLAN_VENDOR_HT_IE_OFFSET_LEN + 1331 sizeof(struct htcap_cmn_ie))) 1332 return QDF_STATUS_E_INVAL; 1333 scan_params->ie_list.htcap = 1334 (uint8_t *)&(((struct wlan_vendor_ie_htcap *)ie)->ie); 1335 } 1336 } else if (is_ht_info((uint8_t *)ie)) { 1337 /* we only care if there isn't already an HT IE (ANA) */ 1338 if (!scan_params->ie_list.htinfo) { 1339 if (ie->ie_len != WLAN_VENDOR_HT_IE_OFFSET_LEN + 1340 sizeof(struct wlan_ie_htinfo_cmn)) 1341 return QDF_STATUS_E_INVAL; 1342 scan_params->ie_list.htinfo = 1343 (uint8_t *)&(((struct wlan_vendor_ie_htinfo *) 1344 ie)->hi_ie); 1345 } 1346 } else if (is_interop_vht((uint8_t *)ie) && 1347 !(scan_params->ie_list.vhtcap)) { 1348 uint8_t *vendor_ie = (uint8_t *)(ie); 1349 1350 if (ie->ie_len < ((WLAN_VENDOR_VHTCAP_IE_OFFSET + 1351 sizeof(struct wlan_ie_vhtcaps)) - 1352 sizeof(struct ie_header))) 1353 return QDF_STATUS_E_INVAL; 1354 vendor_ie = ((uint8_t *)(ie)) + WLAN_VENDOR_VHTCAP_IE_OFFSET; 1355 if (vendor_ie[1] != (sizeof(struct wlan_ie_vhtcaps)) - 1356 sizeof(struct ie_header)) 1357 return QDF_STATUS_E_INVAL; 1358 /* location where Interop Vht Cap IE and VHT OP IE Present */ 1359 scan_params->ie_list.vhtcap = (((uint8_t *)(ie)) + 1360 WLAN_VENDOR_VHTCAP_IE_OFFSET); 1361 if (ie->ie_len > ((WLAN_VENDOR_VHTCAP_IE_OFFSET + 1362 sizeof(struct wlan_ie_vhtcaps)) - 1363 sizeof(struct ie_header))) { 1364 if (ie->ie_len < ((WLAN_VENDOR_VHTOP_IE_OFFSET + 1365 sizeof(struct wlan_ie_vhtop)) - 1366 sizeof(struct ie_header))) 1367 return QDF_STATUS_E_INVAL; 1368 vendor_ie = ((uint8_t *)(ie)) + 1369 WLAN_VENDOR_VHTOP_IE_OFFSET; 1370 if (vendor_ie[1] != (sizeof(struct wlan_ie_vhtop) - 1371 sizeof(struct ie_header))) 1372 return QDF_STATUS_E_INVAL; 1373 scan_params->ie_list.vhtop = (((uint8_t *)(ie)) + 1374 WLAN_VENDOR_VHTOP_IE_OFFSET); 1375 } 1376 } else if (is_bwnss_oui((uint8_t *)ie)) { 1377 /* 1378 * Bandwidth-NSS map has sub-type & version. 1379 * hence copy data just after version byte 1380 */ 1381 if (ie->ie_len > WLAN_BWNSS_MAP_OFFSET) 1382 scan_params->ie_list.bwnss_map = (((uint8_t *)ie) + 8); 1383 } else if (is_mbo_oce_oui((uint8_t *)ie)) { 1384 scan_params->ie_list.mbo_oce = (uint8_t *)ie; 1385 } else if (is_extender_oui((uint8_t *)ie)) { 1386 scan_params->ie_list.extender = (uint8_t *)ie; 1387 } else if (is_adaptive_11r_oui((uint8_t *)ie)) { 1388 if ((ie->ie_len < OUI_LENGTH) || 1389 (ie->ie_len > MAX_ADAPTIVE_11R_IE_LEN)) 1390 return QDF_STATUS_E_INVAL; 1391 1392 scan_params->ie_list.adaptive_11r = (uint8_t *)ie + 1393 sizeof(struct ie_header); 1394 } else if (is_sae_single_pmk_oui((uint8_t *)ie)) { 1395 if ((ie->ie_len < OUI_LENGTH) || 1396 (ie->ie_len > MAX_SAE_SINGLE_PMK_IE_LEN)) { 1397 scm_debug("Invalid sae single pmk OUI"); 1398 return QDF_STATUS_E_INVAL; 1399 } 1400 scan_params->ie_list.single_pmk = (uint8_t *)ie + 1401 sizeof(struct ie_header); 1402 } else if (is_qcn_oui((uint8_t *)ie)) { 1403 scan_params->ie_list.qcn = (uint8_t *)ie; 1404 } 1405 1406 return QDF_STATUS_SUCCESS; 1407 } 1408 1409 static QDF_STATUS 1410 util_scan_populate_bcn_ie_list(struct wlan_objmgr_pdev *pdev, 1411 struct scan_cache_entry *scan_params, 1412 qdf_freq_t *chan_freq, uint8_t band_mask) 1413 { 1414 struct ie_header *ie, *sub_ie; 1415 uint32_t ie_len, sub_ie_len; 1416 QDF_STATUS status; 1417 uint8_t chan_idx; 1418 struct wlan_scan_obj *scan_obj; 1419 struct wlan_objmgr_psoc *psoc; 1420 uint8_t tpe_idx = 0; 1421 1422 psoc = wlan_pdev_get_psoc(pdev); 1423 if (!psoc) { 1424 scm_err("psoc is NULL"); 1425 return QDF_STATUS_E_INVAL; 1426 } 1427 1428 scan_obj = wlan_psoc_get_scan_obj(psoc); 1429 if (!scan_obj) { 1430 scm_err("scan_obj is NULL"); 1431 return QDF_STATUS_E_INVAL; 1432 } 1433 1434 ie_len = util_scan_entry_ie_len(scan_params); 1435 ie = (struct ie_header *) 1436 util_scan_entry_ie_data(scan_params); 1437 1438 while (ie_len >= sizeof(struct ie_header)) { 1439 ie_len -= sizeof(struct ie_header); 1440 1441 if (!ie->ie_len) { 1442 ie += 1; 1443 continue; 1444 } 1445 1446 if (ie_len < ie->ie_len) { 1447 if (scan_obj->allow_bss_with_incomplete_ie) { 1448 scm_debug(QDF_MAC_ADDR_FMT": Scan allowed with incomplete corrupted IE:%x, ie_len: %d, ie->ie_len: %d, stop processing further", 1449 QDF_MAC_ADDR_REF(scan_params->bssid.bytes), 1450 ie->ie_id, ie_len, ie->ie_len); 1451 break; 1452 } 1453 scm_debug(QDF_MAC_ADDR_FMT": Scan not allowed with incomplete corrupted IE:%x, ie_len: %d, ie->ie_len: %d, stop processing further", 1454 QDF_MAC_ADDR_REF(scan_params->bssid.bytes), 1455 ie->ie_id, ie_len, ie->ie_len); 1456 return QDF_STATUS_E_INVAL; 1457 } 1458 1459 switch (ie->ie_id) { 1460 case WLAN_ELEMID_SSID: 1461 if (ie->ie_len > (sizeof(struct ie_ssid) - 1462 sizeof(struct ie_header))) 1463 goto err; 1464 scan_params->ie_list.ssid = (uint8_t *)ie; 1465 break; 1466 case WLAN_ELEMID_RATES: 1467 if (ie->ie_len > WLAN_SUPPORTED_RATES_IE_MAX_LEN) 1468 goto err; 1469 scan_params->ie_list.rates = (uint8_t *)ie; 1470 break; 1471 case WLAN_ELEMID_DSPARMS: 1472 if (ie->ie_len != WLAN_DS_PARAM_IE_MAX_LEN) 1473 return QDF_STATUS_E_INVAL; 1474 scan_params->ie_list.ds_param = (uint8_t *)ie; 1475 chan_idx = ((struct ds_ie *)ie)->cur_chan; 1476 *chan_freq = wlan_reg_chan_band_to_freq(pdev, chan_idx, 1477 band_mask); 1478 /* Drop if invalid freq */ 1479 if (scan_obj->drop_bcn_on_invalid_freq && 1480 !wlan_reg_is_freq_present_in_cur_chan_list(pdev, 1481 *chan_freq)) { 1482 scm_debug(QDF_MAC_ADDR_FMT": Drop as invalid chan %d in DS IE, freq %d, band_mask %d", 1483 QDF_MAC_ADDR_REF( 1484 scan_params->bssid.bytes), 1485 chan_idx, *chan_freq, band_mask); 1486 return QDF_STATUS_E_INVAL; 1487 } 1488 break; 1489 case WLAN_ELEMID_TIM: 1490 if (ie->ie_len < WLAN_TIM_IE_MIN_LENGTH) 1491 goto err; 1492 scan_params->ie_list.tim = (uint8_t *)ie; 1493 scan_params->dtim_period = 1494 ((struct wlan_tim_ie *)ie)->tim_period; 1495 break; 1496 case WLAN_ELEMID_COUNTRY: 1497 if (ie->ie_len < WLAN_COUNTRY_IE_MIN_LEN) 1498 goto err; 1499 scan_params->ie_list.country = (uint8_t *)ie; 1500 break; 1501 case WLAN_ELEMID_QBSS_LOAD: 1502 if (ie->ie_len != sizeof(struct qbss_load_ie) - 1503 sizeof(struct ie_header)) { 1504 /* 1505 * Expected QBSS IE length is 5Bytes; For some 1506 * old cisco AP, QBSS IE length is 4Bytes, which 1507 * doesn't match with latest spec, So ignore 1508 * QBSS IE in such case. 1509 */ 1510 break; 1511 } 1512 scan_params->ie_list.qbssload = (uint8_t *)ie; 1513 break; 1514 case WLAN_ELEMID_CHANSWITCHANN: 1515 if (ie->ie_len != WLAN_CSA_IE_MAX_LEN) 1516 goto err; 1517 scan_params->ie_list.csa = (uint8_t *)ie; 1518 break; 1519 case WLAN_ELEMID_IBSSDFS: 1520 if (ie->ie_len < WLAN_IBSSDFS_IE_MIN_LEN) 1521 goto err; 1522 scan_params->ie_list.ibssdfs = (uint8_t *)ie; 1523 break; 1524 case WLAN_ELEMID_QUIET: 1525 if (ie->ie_len != WLAN_QUIET_IE_MAX_LEN) 1526 goto err; 1527 scan_params->ie_list.quiet = (uint8_t *)ie; 1528 break; 1529 case WLAN_ELEMID_ERP: 1530 if (ie->ie_len != (sizeof(struct erp_ie) - 1531 sizeof(struct ie_header))) 1532 goto err; 1533 scan_params->erp = ((struct erp_ie *)ie)->value; 1534 break; 1535 case WLAN_ELEMID_HTCAP_ANA: 1536 if (ie->ie_len == sizeof(struct htcap_cmn_ie)) { 1537 scan_params->ie_list.htcap = 1538 (uint8_t *)&(((struct htcap_ie *)ie)->ie); 1539 } 1540 break; 1541 case WLAN_ELEMID_RSN: 1542 /* 1543 * For security cert TC, RSNIE length can be 1 but if 1544 * beacon is dropped, old entry will remain in scan 1545 * cache and cause cert TC failure as connection with 1546 * old entry with valid RSN IE will pass. 1547 * So instead of dropping the frame, do not store the 1548 * RSN pointer so that old entry is overwritten. 1549 */ 1550 if (ie->ie_len >= WLAN_RSN_IE_MIN_LEN) 1551 scan_params->ie_list.rsn = (uint8_t *)ie; 1552 break; 1553 case WLAN_ELEMID_XRATES: 1554 if (ie->ie_len > WLAN_EXT_SUPPORTED_RATES_IE_MAX_LEN) 1555 goto err; 1556 scan_params->ie_list.xrates = (uint8_t *)ie; 1557 break; 1558 case WLAN_ELEMID_EXTCHANSWITCHANN: 1559 if (ie->ie_len != WLAN_XCSA_IE_MAX_LEN) 1560 goto err; 1561 scan_params->ie_list.xcsa = (uint8_t *)ie; 1562 break; 1563 case WLAN_ELEMID_SECCHANOFFSET: 1564 if (ie->ie_len != WLAN_SECCHANOFF_IE_MAX_LEN) 1565 goto err; 1566 scan_params->ie_list.secchanoff = (uint8_t *)ie; 1567 break; 1568 case WLAN_ELEMID_HTINFO_ANA: 1569 if (ie->ie_len != sizeof(struct wlan_ie_htinfo_cmn)) 1570 goto err; 1571 scan_params->ie_list.htinfo = 1572 (uint8_t *)&(((struct wlan_ie_htinfo *) ie)->hi_ie); 1573 chan_idx = ((struct wlan_ie_htinfo_cmn *) 1574 (scan_params->ie_list.htinfo))->hi_ctrlchannel; 1575 *chan_freq = wlan_reg_chan_band_to_freq(pdev, chan_idx, 1576 band_mask); 1577 /* Drop if invalid freq */ 1578 if (scan_obj->drop_bcn_on_invalid_freq && 1579 wlan_reg_is_disable_for_pwrmode( 1580 pdev, *chan_freq, 1581 REG_CURRENT_PWR_MODE)) { 1582 scm_debug_rl(QDF_MAC_ADDR_FMT": Drop as invalid channel %d freq %d in HT_INFO IE", 1583 QDF_MAC_ADDR_REF(scan_params->bssid.bytes), 1584 chan_idx, *chan_freq); 1585 return QDF_STATUS_E_INVAL; 1586 } 1587 break; 1588 case WLAN_ELEMID_WAPI: 1589 if (ie->ie_len < WLAN_WAPI_IE_MIN_LEN) 1590 goto err; 1591 scan_params->ie_list.wapi = (uint8_t *)ie; 1592 break; 1593 case WLAN_ELEMID_XCAPS: 1594 if (ie->ie_len > WLAN_EXTCAP_IE_MAX_LEN) 1595 goto err; 1596 scan_params->ie_list.extcaps = (uint8_t *)ie; 1597 break; 1598 case WLAN_ELEMID_VHTCAP: 1599 if (ie->ie_len != (sizeof(struct wlan_ie_vhtcaps) - 1600 sizeof(struct ie_header))) 1601 goto err; 1602 scan_params->ie_list.vhtcap = (uint8_t *)ie; 1603 break; 1604 case WLAN_ELEMID_VHTOP: 1605 if (ie->ie_len != (sizeof(struct wlan_ie_vhtop) - 1606 sizeof(struct ie_header))) 1607 goto err; 1608 scan_params->ie_list.vhtop = (uint8_t *)ie; 1609 break; 1610 case WLAN_ELEMID_OP_MODE_NOTIFY: 1611 if (ie->ie_len != WLAN_OPMODE_IE_MAX_LEN) 1612 goto err; 1613 scan_params->ie_list.opmode = (uint8_t *)ie; 1614 break; 1615 case WLAN_ELEMID_MOBILITY_DOMAIN: 1616 if (ie->ie_len != WLAN_MOBILITY_DOMAIN_IE_MAX_LEN) 1617 goto err; 1618 scan_params->ie_list.mdie = (uint8_t *)ie; 1619 break; 1620 case WLAN_ELEMID_VENDOR: 1621 status = util_scan_parse_vendor_ie(scan_params, 1622 ie); 1623 if (QDF_IS_STATUS_ERROR(status)) 1624 goto err_status; 1625 break; 1626 case WLAN_ELEMID_VHT_TX_PWR_ENVLP: 1627 if (ie->ie_len < WLAN_TPE_IE_MIN_LEN) 1628 goto err; 1629 if (tpe_idx >= WLAN_MAX_NUM_TPE_IE) 1630 goto err; 1631 scan_params->ie_list.tpe[tpe_idx++] = (uint8_t *)ie; 1632 break; 1633 case WLAN_ELEMID_CHAN_SWITCH_WRAP: 1634 scan_params->ie_list.cswrp = (uint8_t *)ie; 1635 /* Go to next sub IE */ 1636 sub_ie = (struct ie_header *) 1637 (((uint8_t *)ie) + sizeof(struct ie_header)); 1638 sub_ie_len = ie->ie_len; 1639 status = 1640 util_scan_parse_chan_switch_wrapper_ie( 1641 scan_params, sub_ie, sub_ie_len); 1642 if (QDF_IS_STATUS_ERROR(status)) { 1643 goto err_status; 1644 } 1645 break; 1646 case WLAN_ELEMID_FILS_INDICATION: 1647 if (ie->ie_len < WLAN_FILS_INDICATION_IE_MIN_LEN) 1648 goto err; 1649 scan_params->ie_list.fils_indication = (uint8_t *)ie; 1650 break; 1651 case WLAN_ELEMID_RSNXE: 1652 if (!ie->ie_len) 1653 goto err; 1654 scan_params->ie_list.rsnxe = (uint8_t *)ie; 1655 break; 1656 case WLAN_ELEMID_EXTN_ELEM: 1657 status = util_scan_parse_extn_ie(scan_params, ie); 1658 if (QDF_IS_STATUS_ERROR(status)) 1659 goto err_status; 1660 break; 1661 case WLAN_ELEMID_REDUCED_NEIGHBOR_REPORT: 1662 if (ie->ie_len < WLAN_RNR_IE_MIN_LEN) 1663 goto err; 1664 scan_params->ie_list.rnrie = (uint8_t *)ie; 1665 status = util_scan_parse_rnr_ie(scan_params, ie); 1666 if (QDF_IS_STATUS_ERROR(status)) 1667 goto err_status; 1668 break; 1669 default: 1670 break; 1671 } 1672 1673 /* Consume info element */ 1674 ie_len -= ie->ie_len; 1675 /* Go to next IE */ 1676 ie = (struct ie_header *) 1677 (((uint8_t *) ie) + 1678 sizeof(struct ie_header) + 1679 ie->ie_len); 1680 } 1681 1682 return QDF_STATUS_SUCCESS; 1683 1684 err: 1685 status = QDF_STATUS_E_INVAL; 1686 err_status: 1687 scm_debug("failed to parse IE - id: %d, len: %d", 1688 ie->ie_id, ie->ie_len); 1689 1690 return status; 1691 } 1692 1693 /** 1694 * util_scan_update_esp_data: update ESP params from beacon/probe response 1695 * @esp_information: pointer to wlan_esp_information 1696 * @scan_entry: new received entry 1697 * 1698 * The Estimated Service Parameters element is 1699 * used by a AP to provide information to another STA which 1700 * can then use the information as input to an algorithm to 1701 * generate an estimate of throughput between the two STAs. 1702 * The ESP Information List field contains from 1 to 4 ESP 1703 * Information fields(each field 24 bits), each corresponding 1704 * to an access category for which estimated service parameters 1705 * information is provided. 1706 * 1707 * Return: None 1708 */ 1709 static void util_scan_update_esp_data(struct wlan_esp_ie *esp_information, 1710 struct scan_cache_entry *scan_entry) 1711 { 1712 1713 uint8_t *data; 1714 int i = 0; 1715 uint64_t total_elements; 1716 struct wlan_esp_info *esp_info; 1717 struct wlan_esp_ie *esp_ie; 1718 1719 esp_ie = (struct wlan_esp_ie *) 1720 util_scan_entry_esp_info(scan_entry); 1721 1722 total_elements = esp_ie->esp_len; 1723 data = (uint8_t *)esp_ie + 3; 1724 do_div(total_elements, ESP_INFORMATION_LIST_LENGTH); 1725 1726 if (total_elements > MAX_ESP_INFORMATION_FIELD) { 1727 scm_err("No of Air time fractions are greater than supported"); 1728 return; 1729 } 1730 1731 for (i = 0; i < total_elements && 1732 data < ((uint8_t *)esp_ie + esp_ie->esp_len + 3); i++) { 1733 esp_info = (struct wlan_esp_info *)data; 1734 if (esp_info->access_category == ESP_AC_BK) { 1735 qdf_mem_copy(&esp_information->esp_info_AC_BK, 1736 data, 3); 1737 data = data + ESP_INFORMATION_LIST_LENGTH; 1738 continue; 1739 } 1740 if (esp_info->access_category == ESP_AC_BE) { 1741 qdf_mem_copy(&esp_information->esp_info_AC_BE, 1742 data, 3); 1743 data = data + ESP_INFORMATION_LIST_LENGTH; 1744 continue; 1745 } 1746 if (esp_info->access_category == ESP_AC_VI) { 1747 qdf_mem_copy(&esp_information->esp_info_AC_VI, 1748 data, 3); 1749 data = data + ESP_INFORMATION_LIST_LENGTH; 1750 continue; 1751 } 1752 if (esp_info->access_category == ESP_AC_VO) { 1753 qdf_mem_copy(&esp_information->esp_info_AC_VO, 1754 data, 3); 1755 data = data + ESP_INFORMATION_LIST_LENGTH; 1756 break; 1757 } 1758 } 1759 } 1760 1761 /** 1762 * util_scan_scm_update_bss_with_esp_data: calculate estimated air time 1763 * fraction 1764 * @scan_entry: new received entry 1765 * 1766 * This function process all Access category ESP params and provide 1767 * best effort air time fraction. 1768 * If best effort is not available, it will choose VI, VO and BK in sequence 1769 * 1770 */ 1771 static void util_scan_scm_update_bss_with_esp_data( 1772 struct scan_cache_entry *scan_entry) 1773 { 1774 uint8_t air_time_fraction = 0; 1775 struct wlan_esp_ie esp_information; 1776 1777 if (!scan_entry->ie_list.esp) 1778 return; 1779 1780 util_scan_update_esp_data(&esp_information, scan_entry); 1781 1782 /* 1783 * If the ESP metric is transmitting multiple airtime fractions, then 1784 * follow the sequence AC_BE, AC_VI, AC_VO, AC_BK and pick whichever is 1785 * the first one available 1786 */ 1787 if (esp_information.esp_info_AC_BE.access_category 1788 == ESP_AC_BE) 1789 air_time_fraction = 1790 esp_information.esp_info_AC_BE. 1791 estimated_air_fraction; 1792 else if (esp_information.esp_info_AC_VI.access_category 1793 == ESP_AC_VI) 1794 air_time_fraction = 1795 esp_information.esp_info_AC_VI. 1796 estimated_air_fraction; 1797 else if (esp_information.esp_info_AC_VO.access_category 1798 == ESP_AC_VO) 1799 air_time_fraction = 1800 esp_information.esp_info_AC_VO. 1801 estimated_air_fraction; 1802 else if (esp_information.esp_info_AC_BK.access_category 1803 == ESP_AC_BK) 1804 air_time_fraction = 1805 esp_information.esp_info_AC_BK. 1806 estimated_air_fraction; 1807 scan_entry->air_time_fraction = air_time_fraction; 1808 } 1809 1810 /** 1811 * util_scan_scm_calc_nss_supported_by_ap() - finds out nss from AP 1812 * @scan_params: new received entry 1813 * 1814 * Return: number of nss advertised by AP 1815 */ 1816 static int util_scan_scm_calc_nss_supported_by_ap( 1817 struct scan_cache_entry *scan_params) 1818 { 1819 struct htcap_cmn_ie *htcap; 1820 struct wlan_ie_vhtcaps *vhtcaps; 1821 struct wlan_ie_hecaps *hecaps; 1822 uint16_t rx_mcs_map = 0; 1823 1824 htcap = (struct htcap_cmn_ie *) 1825 util_scan_entry_htcap(scan_params); 1826 vhtcaps = (struct wlan_ie_vhtcaps *) 1827 util_scan_entry_vhtcap(scan_params); 1828 hecaps = (struct wlan_ie_hecaps *) 1829 util_scan_entry_hecap(scan_params); 1830 1831 if (hecaps) { 1832 /* Using rx mcs map related to 80MHz or lower as in some 1833 * cases higher mcs may support lesser NSS than that 1834 * of lowe mcs. Thus giving max NSS capability. 1835 */ 1836 rx_mcs_map = 1837 qdf_cpu_to_le16(hecaps->mcs_bw_map[0].rx_mcs_map); 1838 } else if (vhtcaps) { 1839 rx_mcs_map = vhtcaps->rx_mcs_map; 1840 } 1841 1842 if (hecaps || vhtcaps) { 1843 if ((rx_mcs_map & 0xC000) != 0xC000) 1844 return 8; 1845 1846 if ((rx_mcs_map & 0x3000) != 0x3000) 1847 return 7; 1848 1849 if ((rx_mcs_map & 0x0C00) != 0x0C00) 1850 return 6; 1851 1852 if ((rx_mcs_map & 0x0300) != 0x0300) 1853 return 5; 1854 1855 if ((rx_mcs_map & 0x00C0) != 0x00C0) 1856 return 4; 1857 1858 if ((rx_mcs_map & 0x0030) != 0x0030) 1859 return 3; 1860 1861 if ((rx_mcs_map & 0x000C) != 0x000C) 1862 return 2; 1863 } else if (htcap) { 1864 if (htcap->mcsset[3]) 1865 return 4; 1866 1867 if (htcap->mcsset[2]) 1868 return 3; 1869 1870 if (htcap->mcsset[1]) 1871 return 2; 1872 1873 } 1874 return 1; 1875 } 1876 1877 #ifdef WLAN_DFS_CHAN_HIDDEN_SSID 1878 QDF_STATUS 1879 util_scan_add_hidden_ssid(struct wlan_objmgr_pdev *pdev, qdf_nbuf_t bcnbuf) 1880 { 1881 struct wlan_frame_hdr *hdr; 1882 struct wlan_bcn_frame *bcn; 1883 struct wlan_scan_obj *scan_obj; 1884 struct wlan_ssid *conf_ssid; 1885 struct ie_header *ie; 1886 uint32_t frame_len = qdf_nbuf_len(bcnbuf); 1887 uint16_t bcn_ie_offset, ssid_ie_start_offset, ssid_ie_end_offset; 1888 uint16_t tmplen, ie_length; 1889 uint8_t *pbeacon, *tmp; 1890 bool set_ssid_flag = false; 1891 struct ie_ssid ssid = {0}; 1892 uint8_t pdev_id; 1893 1894 if (!pdev) { 1895 scm_warn("pdev: 0x%pK is NULL", pdev); 1896 return QDF_STATUS_E_NULL_VALUE; 1897 } 1898 pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 1899 scan_obj = wlan_pdev_get_scan_obj(pdev); 1900 if (!scan_obj) { 1901 scm_warn("null scan_obj"); 1902 return QDF_STATUS_E_NULL_VALUE; 1903 } 1904 1905 conf_ssid = &scan_obj->pdev_info[pdev_id].conf_ssid; 1906 1907 hdr = (struct wlan_frame_hdr *)qdf_nbuf_data(bcnbuf); 1908 1909 /* received bssid does not match configured bssid */ 1910 if (qdf_mem_cmp(hdr->i_addr3, scan_obj->pdev_info[pdev_id].conf_bssid, 1911 QDF_MAC_ADDR_SIZE) || 1912 conf_ssid->length == 0) { 1913 return QDF_STATUS_SUCCESS; 1914 } 1915 1916 bcn = (struct wlan_bcn_frame *)(qdf_nbuf_data(bcnbuf) + sizeof(*hdr)); 1917 pbeacon = (uint8_t *)bcn; 1918 1919 ie = (struct ie_header *)(pbeacon + 1920 offsetof(struct wlan_bcn_frame, ie)); 1921 1922 bcn_ie_offset = offsetof(struct wlan_bcn_frame, ie); 1923 ie_length = (uint16_t)(frame_len - sizeof(*hdr) - 1924 bcn_ie_offset); 1925 1926 while (ie_length >= sizeof(struct ie_header)) { 1927 ie_length -= sizeof(struct ie_header); 1928 1929 bcn_ie_offset += sizeof(struct ie_header); 1930 1931 if (ie_length < ie->ie_len) { 1932 scm_debug("Incomplete corrupted IE:%x", ie->ie_id); 1933 return QDF_STATUS_E_INVAL; 1934 } 1935 if (ie->ie_id == WLAN_ELEMID_SSID) { 1936 if (ie->ie_len > (sizeof(struct ie_ssid) - 1937 sizeof(struct ie_header))) { 1938 return QDF_STATUS_E_INVAL; 1939 } 1940 ssid.ssid_id = ie->ie_id; 1941 ssid.ssid_len = ie->ie_len; 1942 1943 if (ssid.ssid_len) 1944 qdf_mem_copy(ssid.ssid, 1945 ie + sizeof(struct ie_header), 1946 ssid.ssid_len); 1947 1948 if (util_scan_is_hidden_ssid(&ssid)) { 1949 set_ssid_flag = true; 1950 ssid_ie_start_offset = bcn_ie_offset - 1951 sizeof(struct ie_header); 1952 ssid_ie_end_offset = bcn_ie_offset + 1953 ie->ie_len; 1954 } 1955 } 1956 if (ie->ie_len == 0) { 1957 ie += 1; /* next IE */ 1958 continue; 1959 } 1960 if (ie->ie_id == WLAN_ELEMID_VENDOR && 1961 is_wps_oui((uint8_t *)ie)) { 1962 set_ssid_flag = false; 1963 break; 1964 } 1965 /* Consume info element */ 1966 ie_length -= ie->ie_len; 1967 /* Go to next IE */ 1968 ie = (struct ie_header *)(((uint8_t *)ie) + 1969 sizeof(struct ie_header) + 1970 ie->ie_len); 1971 } 1972 1973 if (set_ssid_flag) { 1974 /* Hidden SSID if the Length is 0 */ 1975 if (!ssid.ssid_len) { 1976 /* increase the taillength by length of ssid */ 1977 if (qdf_nbuf_put_tail(bcnbuf, 1978 conf_ssid->length) == NULL) { 1979 scm_debug("No enough tailroom"); 1980 return QDF_STATUS_E_NOMEM; 1981 } 1982 /* 1983 * "qdf_nbuf_put_tail" might change the data pointer of 1984 * the skb. Therefore use the new data area. 1985 */ 1986 pbeacon = (qdf_nbuf_data(bcnbuf) + sizeof(*hdr)); 1987 /* length of the buffer to be copied */ 1988 tmplen = frame_len - 1989 sizeof(*hdr) - ssid_ie_end_offset; 1990 /* 1991 * tmp memory to copy the beacon info 1992 * after ssid ie. 1993 */ 1994 tmp = qdf_mem_malloc(tmplen * sizeof(u_int8_t)); 1995 if (!tmp) 1996 return QDF_STATUS_E_NOMEM; 1997 1998 /* Copy beacon data after ssid ie to tmp */ 1999 qdf_nbuf_copy_bits(bcnbuf, (sizeof(*hdr) + 2000 ssid_ie_end_offset), tmplen, tmp); 2001 /* Add ssid length */ 2002 *(pbeacon + (ssid_ie_start_offset + 1)) 2003 = conf_ssid->length; 2004 /* Insert the SSID string */ 2005 qdf_mem_copy((pbeacon + ssid_ie_end_offset), 2006 conf_ssid->ssid, conf_ssid->length); 2007 /* Copy rest of the beacon data */ 2008 qdf_mem_copy((pbeacon + ssid_ie_end_offset + 2009 conf_ssid->length), tmp, tmplen); 2010 qdf_mem_free(tmp); 2011 2012 /* Hidden ssid with all 0's */ 2013 } else if (ssid.ssid_len == conf_ssid->length) { 2014 /* Insert the SSID string */ 2015 qdf_mem_copy((pbeacon + ssid_ie_start_offset + 2016 sizeof(struct ie_header)), 2017 conf_ssid->ssid, conf_ssid->length); 2018 } else { 2019 scm_debug("mismatch in hidden ssid length"); 2020 return QDF_STATUS_E_INVAL; 2021 } 2022 } 2023 return QDF_STATUS_SUCCESS; 2024 } 2025 #endif /* WLAN_DFS_CHAN_HIDDEN_SSID */ 2026 2027 #ifdef WLAN_ADAPTIVE_11R 2028 /** 2029 * scm_fill_adaptive_11r_cap() - Check if the AP supports adaptive 11r 2030 * @scan_entry: Pointer to the scan entry 2031 * 2032 * Return: true if adaptive 11r is advertised else false 2033 */ 2034 static void scm_fill_adaptive_11r_cap(struct scan_cache_entry *scan_entry) 2035 { 2036 uint8_t *ie; 2037 uint8_t data; 2038 bool adaptive_11r; 2039 2040 ie = util_scan_entry_adaptive_11r(scan_entry); 2041 if (!ie) 2042 return; 2043 2044 data = *(ie + OUI_LENGTH); 2045 adaptive_11r = (data & 0x1) ? true : false; 2046 2047 scan_entry->adaptive_11r_ap = adaptive_11r; 2048 } 2049 #else 2050 static void scm_fill_adaptive_11r_cap(struct scan_cache_entry *scan_entry) 2051 { 2052 scan_entry->adaptive_11r_ap = false; 2053 } 2054 #endif 2055 2056 static void util_scan_set_security(struct scan_cache_entry *scan_params) 2057 { 2058 if (util_scan_entry_wpa(scan_params)) 2059 scan_params->security_type |= SCAN_SECURITY_TYPE_WPA; 2060 2061 if (util_scan_entry_rsn(scan_params)) 2062 scan_params->security_type |= SCAN_SECURITY_TYPE_RSN; 2063 if (util_scan_entry_wapi(scan_params)) 2064 scan_params->security_type |= SCAN_SECURITY_TYPE_WAPI; 2065 2066 if (!scan_params->security_type && 2067 scan_params->cap_info.wlan_caps.privacy) 2068 scan_params->security_type |= SCAN_SECURITY_TYPE_WEP; 2069 } 2070 2071 #ifdef WLAN_FEATURE_11BE_MLO 2072 /* 2073 * Multi link IE field offsets 2074 * ------------------------------------------------------------------------ 2075 * | EID(1) | Len (1) | EID_EXT (1) | ML_CONTROL (2) | CMN_INFO (var) | ... | 2076 * ------------------------------------------------------------------------ 2077 */ 2078 #define ML_CONTROL_OFFSET 3 2079 #define ML_CMN_INFO_OFFSET ML_CONTROL_OFFSET + 2 2080 2081 #define CMN_INFO_LINK_ID_PRESENT_BIT BIT(4) 2082 #define LINK_INFO_MAC_ADDR_PRESENT_BIT BIT(5) 2083 2084 /* This function is implemented as per IEEE802.11be D1.0, there is no difference 2085 * in presence bitmap for beacon, probe response and probe request frames. 2086 * This code is to be revisited for future drafts if the presence bitmap values 2087 * changes for the beacon, probe response and probe request frames. 2088 */ 2089 static uint8_t util_get_link_info_offset(uint8_t *ml_ie, bool *is_ml_ie_valid) 2090 { 2091 qdf_size_t ml_ie_len = 0; 2092 qdf_size_t parsed_ie_len = 0; 2093 struct wlan_ie_multilink *mlie_fixed; 2094 uint16_t mlcontrol; 2095 uint16_t presencebm; 2096 qdf_size_t actual_len; 2097 2098 if (!ml_ie) { 2099 scm_err("ml_ie is null"); 2100 return 0; 2101 } 2102 2103 if (!is_ml_ie_valid) { 2104 scm_err_rl("is_ml_ie_valid is null"); 2105 return 0; 2106 } 2107 2108 ml_ie_len = ml_ie[TAG_LEN_POS]; 2109 if (!ml_ie_len) { 2110 scm_err("ml_ie_len is zero"); 2111 return 0; 2112 } 2113 2114 if (ml_ie_len < sizeof(struct wlan_ie_multilink)) { 2115 scm_err_rl("Length %zu octets is smaller than required for the fixed portion of Multi-Link element (%zu octets)", 2116 ml_ie_len, sizeof(struct wlan_ie_multilink)); 2117 return 0; 2118 } 2119 2120 mlie_fixed = (struct wlan_ie_multilink *)ml_ie; 2121 mlcontrol = le16toh(mlie_fixed->mlcontrol); 2122 presencebm = QDF_GET_BITS(mlcontrol, WLAN_ML_CTRL_PBM_IDX, 2123 WLAN_ML_CTRL_PBM_BITS); 2124 2125 parsed_ie_len += sizeof(*mlie_fixed); 2126 2127 parsed_ie_len += WLAN_ML_BV_CINFO_LENGTH_SIZE; 2128 parsed_ie_len += QDF_MAC_ADDR_SIZE; 2129 2130 /* Check if Link ID info is present */ 2131 if (presencebm & WLAN_ML_BV_CTRL_PBM_LINKIDINFO_P) 2132 parsed_ie_len += WLAN_ML_BV_CINFO_LINKIDINFO_SIZE; 2133 2134 /* Check if BSS parameter change count is present */ 2135 if (presencebm & WLAN_ML_BV_CTRL_PBM_BSSPARAMCHANGECNT_P) 2136 parsed_ie_len += WLAN_ML_BSSPARAMCHNGCNT_SIZE; 2137 2138 /* Check if Medium Sync Delay Info is present */ 2139 if (presencebm & WLAN_ML_BV_CTRL_PBM_MEDIUMSYNCDELAYINFO_P) 2140 parsed_ie_len += WLAN_ML_BV_CINFO_MEDMSYNCDELAYINFO_SIZE; 2141 2142 /* Check if EML cap is present */ 2143 if (presencebm & WLAN_ML_BV_CTRL_PBM_EMLCAP_P) 2144 parsed_ie_len += WLAN_ML_BV_CINFO_EMLCAP_SIZE; 2145 2146 /* Check if MLD cap and op is present */ 2147 if (presencebm & WLAN_ML_BV_CTRL_PBM_MLDCAPANDOP_P) 2148 parsed_ie_len += WLAN_ML_BV_CINFO_MLDCAPANDOP_SIZE; 2149 2150 /* Check if MLD ID is present */ 2151 if (presencebm & WLAN_ML_BV_CTRL_PBM_MLDID_P) 2152 parsed_ie_len += WLAN_ML_BV_CINFO_MLDID_SIZE; 2153 2154 /* Offset calculation starts from the beginning of the ML IE (including 2155 * EID) hence, adding the size of IE header to ML IE length. 2156 */ 2157 actual_len = ml_ie_len + sizeof(struct ie_header); 2158 if (parsed_ie_len <= actual_len) { 2159 *is_ml_ie_valid = true; 2160 } else { 2161 *is_ml_ie_valid = false; 2162 scm_err("Invalid ML IE, expect min len: %zu, actual len: %zu", 2163 parsed_ie_len, actual_len); 2164 } 2165 if (parsed_ie_len < actual_len) 2166 return parsed_ie_len; 2167 2168 return 0; 2169 } 2170 2171 static void util_get_ml_bv_partner_link_info(struct scan_cache_entry *scan_entry) 2172 { 2173 uint8_t *ml_ie = scan_entry->ie_list.multi_link_bv; 2174 bool is_ml_ie_valid; 2175 uint8_t offset = util_get_link_info_offset(ml_ie, &is_ml_ie_valid); 2176 uint16_t sta_ctrl; 2177 uint8_t *stactrl_offset = NULL, *ielist_offset; 2178 uint8_t perstaprof_len = 0, perstaprof_stainfo_len = 0, ielist_len = 0; 2179 struct partner_link_info *link_info = NULL; 2180 uint8_t eid = 0; 2181 uint8_t link_idx = 0; 2182 uint8_t rnr_idx = 0; 2183 struct rnr_bss_info *rnr = NULL; 2184 2185 /* Update partner info from RNR IE */ 2186 while ((rnr_idx < MAX_RNR_BSS) && (rnr_idx < scan_entry->rnr.count)) { 2187 if (link_idx >= (MLD_MAX_LINKS - 1)) 2188 break; 2189 rnr = &scan_entry->rnr.bss_info[rnr_idx]; 2190 if (rnr->mld_info_valid && !rnr->mld_info.mld_id) { 2191 link_info = &scan_entry->ml_info.link_info[link_idx]; 2192 qdf_mem_copy(&link_info->link_addr, 2193 &rnr->bssid, QDF_MAC_ADDR_SIZE); 2194 2195 link_info->link_id = rnr->mld_info.link_id; 2196 link_info->freq = 2197 wlan_reg_chan_opclass_to_freq(rnr->channel_number, 2198 rnr->operating_class, 2199 true); 2200 if (!link_info->freq) 2201 scm_debug("freq 0 rnr channel %u op_class %u", 2202 rnr->channel_number, 2203 rnr->operating_class); 2204 link_info->op_class = rnr->operating_class; 2205 link_idx++; 2206 } 2207 rnr_idx++; 2208 } 2209 2210 scan_entry->ml_info.num_links = link_idx; 2211 if (!offset) 2212 return; 2213 2214 /* TODO: loop through all the STA info fields */ 2215 2216 /* Sub element ID 0 represents Per-STA Profile */ 2217 if (ml_ie[offset] == 0) { 2218 perstaprof_len = ml_ie[offset + 1]; 2219 stactrl_offset = &ml_ie[offset + 2]; 2220 2221 /* Skip sub element ID and length fields */ 2222 offset += 2; 2223 2224 sta_ctrl = *(uint16_t *)(ml_ie + offset); 2225 2226 /* Skip STA control field */ 2227 offset += 2; 2228 2229 /* 2230 * offset points to the beginning of the STA Info field which 2231 * holds the length of the variable field. 2232 */ 2233 perstaprof_stainfo_len = ml_ie[offset]; 2234 2235 /* Skip STA Info Length field */ 2236 offset += WLAN_ML_BV_LINFO_PERSTAPROF_STAINFO_LENGTH_SIZE; 2237 2238 /* 2239 * To point to the ie_list offset move past the STA Info field. 2240 */ 2241 ielist_offset = &ml_ie[offset + perstaprof_stainfo_len]; 2242 2243 /* 2244 * Ensure that the STA Control Field + STA Info Field 2245 * is smaller than the per-STA profile when incrementing 2246 * the pointer to avoid underflow during subtraction. 2247 */ 2248 if ((perstaprof_stainfo_len + 2249 WLAN_ML_BV_LINFO_PERSTAPROF_STAINFO_LENGTH_SIZE + 2250 WLAN_ML_BV_LINFO_PERSTAPROF_STACTRL_SIZE) < 2251 perstaprof_len) { 2252 ielist_len = perstaprof_len - 2253 (WLAN_ML_BV_LINFO_PERSTAPROF_STACTRL_SIZE + 2254 WLAN_ML_BV_LINFO_PERSTAPROF_STAINFO_LENGTH_SIZE + 2255 perstaprof_stainfo_len); 2256 } else { 2257 scm_debug("No STA profile IE list found"); 2258 ielist_len = 0; 2259 } 2260 2261 link_info = NULL; 2262 for (link_idx = 0; link_idx < scan_entry->ml_info.num_links; 2263 link_idx++) { 2264 if (scan_entry->ml_info.link_info[link_idx].link_id == 2265 (sta_ctrl & 0xF)) { 2266 link_info = &scan_entry->ml_info.link_info[link_idx]; 2267 } 2268 } 2269 2270 /* Get the pointers to CSA, ECSA, Max Channel Switch Time IE. */ 2271 if (link_info) { 2272 link_info->csa_ie = wlan_get_ie_ptr_from_eid 2273 (WLAN_ELEMID_CHANSWITCHANN, ielist_offset, 2274 ielist_len); 2275 2276 link_info->ecsa_ie = wlan_get_ie_ptr_from_eid 2277 (WLAN_ELEMID_EXTCHANSWITCHANN, ielist_offset, 2278 ielist_len); 2279 2280 eid = WLAN_EXTN_ELEMID_MAX_CHAN_SWITCH_TIME; 2281 link_info->max_cst_ie = wlan_get_ext_ie_ptr_from_ext_id 2282 (&eid, 1, ielist_offset, ielist_len); 2283 } 2284 } 2285 } 2286 2287 static void util_scan_update_ml_info(struct scan_cache_entry *scan_entry) 2288 { 2289 uint8_t *ml_ie = scan_entry->ie_list.multi_link_bv; 2290 uint16_t multi_link_ctrl; 2291 uint8_t offset; 2292 uint8_t mlie_min_len; 2293 bool is_ml_ie_valid = true; 2294 2295 if (!scan_entry->ie_list.ehtcap && scan_entry->ie_list.multi_link_bv) { 2296 scan_entry->ie_list.multi_link_bv = NULL; 2297 return; 2298 } 2299 if (!scan_entry->ie_list.multi_link_bv) 2300 return; 2301 2302 mlie_min_len = util_get_link_info_offset(ml_ie, &is_ml_ie_valid); 2303 if (!is_ml_ie_valid) { 2304 scan_entry->ie_list.multi_link_bv = NULL; 2305 return; 2306 } 2307 2308 multi_link_ctrl = *(uint16_t *)(ml_ie + ML_CONTROL_OFFSET); 2309 2310 /* TODO: update ml_info based on ML IE */ 2311 2312 multi_link_ctrl = *(uint16_t *)(ml_ie + ML_CONTROL_OFFSET); 2313 offset = ML_CMN_INFO_OFFSET; 2314 2315 /* Increment the offset to account for the Common Info Length */ 2316 offset += WLAN_ML_BV_CINFO_LENGTH_SIZE; 2317 2318 qdf_mem_copy(&scan_entry->ml_info.mld_mac_addr, 2319 ml_ie + offset, 6); 2320 offset += 6; 2321 2322 /* TODO: Decode it from ML IE */ 2323 scan_entry->ml_info.num_links = 0; 2324 2325 /** 2326 * Copy Link ID & MAC address of the scan cache entry as first entry 2327 * in the partner info list 2328 */ 2329 if (multi_link_ctrl & CMN_INFO_LINK_ID_PRESENT_BIT) 2330 scan_entry->ml_info.self_link_id = ml_ie[offset] & 0x0F; 2331 2332 util_get_ml_bv_partner_link_info(scan_entry); 2333 } 2334 #else 2335 static void util_scan_update_ml_info(struct scan_cache_entry *scan_entry) 2336 { 2337 } 2338 #endif 2339 2340 static QDF_STATUS 2341 util_scan_gen_scan_entry(struct wlan_objmgr_pdev *pdev, 2342 uint8_t *frame, qdf_size_t frame_len, 2343 uint32_t frm_subtype, 2344 struct mgmt_rx_event_params *rx_param, 2345 struct scan_mbssid_info *mbssid_info, 2346 qdf_list_t *scan_list) 2347 { 2348 struct wlan_frame_hdr *hdr; 2349 struct wlan_bcn_frame *bcn; 2350 QDF_STATUS status = QDF_STATUS_SUCCESS; 2351 struct ie_ssid *ssid; 2352 struct scan_cache_entry *scan_entry; 2353 struct qbss_load_ie *qbss_load; 2354 struct scan_cache_node *scan_node; 2355 uint8_t i; 2356 qdf_freq_t chan_freq = 0; 2357 bool is_6g_dup_bcon = false; 2358 uint8_t band_mask; 2359 qdf_freq_t recv_freq = 0; 2360 2361 scan_entry = qdf_mem_malloc_atomic(sizeof(*scan_entry)); 2362 if (!scan_entry) { 2363 scm_err("failed to allocate memory for scan_entry"); 2364 return QDF_STATUS_E_NOMEM; 2365 } 2366 2367 scan_entry->raw_frame.ptr = 2368 qdf_mem_malloc_atomic(frame_len); 2369 if (!scan_entry->raw_frame.ptr) { 2370 scm_err("failed to allocate memory for frame"); 2371 qdf_mem_free(scan_entry); 2372 return QDF_STATUS_E_NOMEM; 2373 } 2374 2375 bcn = (struct wlan_bcn_frame *) 2376 (frame + sizeof(*hdr)); 2377 hdr = (struct wlan_frame_hdr *)frame; 2378 2379 /* update timestamp in nanoseconds needed by kernel layers */ 2380 scan_entry->boottime_ns = qdf_get_bootbased_boottime_ns(); 2381 2382 scan_entry->frm_subtype = frm_subtype; 2383 qdf_mem_copy(scan_entry->bssid.bytes, 2384 hdr->i_addr3, QDF_MAC_ADDR_SIZE); 2385 /* Scr addr */ 2386 qdf_mem_copy(scan_entry->mac_addr.bytes, 2387 hdr->i_addr2, QDF_MAC_ADDR_SIZE); 2388 scan_entry->seq_num = 2389 (le16toh(*(uint16_t *)hdr->i_seq) >> WLAN_SEQ_SEQ_SHIFT); 2390 2391 scan_entry->snr = rx_param->snr; 2392 scan_entry->avg_snr = WLAN_SNR_IN(scan_entry->snr); 2393 scan_entry->rssi_raw = rx_param->rssi; 2394 scan_entry->avg_rssi = WLAN_RSSI_IN(scan_entry->rssi_raw); 2395 scan_entry->tsf_delta = rx_param->tsf_delta; 2396 scan_entry->pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 2397 2398 recv_freq = rx_param->chan_freq; 2399 /* Copy per chain rssi to scan entry */ 2400 qdf_mem_copy(scan_entry->per_chain_rssi, rx_param->rssi_ctl, 2401 WLAN_MGMT_TXRX_HOST_MAX_ANTENNA); 2402 band_mask = BIT(wlan_reg_freq_to_band(recv_freq)); 2403 2404 if (!wlan_psoc_nif_fw_ext_cap_get(wlan_pdev_get_psoc(pdev), 2405 WLAN_SOC_CEXT_HW_DB2DBM)) { 2406 for (i = 0; i < WLAN_MGMT_TXRX_HOST_MAX_ANTENNA; i++) { 2407 if (scan_entry->per_chain_rssi[i] != 2408 WLAN_INVALID_PER_CHAIN_SNR) 2409 scan_entry->per_chain_rssi[i] += 2410 WLAN_NOISE_FLOOR_DBM_DEFAULT; 2411 else 2412 scan_entry->per_chain_rssi[i] = 2413 WLAN_INVALID_PER_CHAIN_RSSI; 2414 } 2415 } 2416 2417 /* store jiffies */ 2418 scan_entry->rrm_parent_tsf = (uint32_t)qdf_system_ticks(); 2419 2420 scan_entry->bcn_int = le16toh(bcn->beacon_interval); 2421 2422 /* 2423 * In case if the beacon doesn't have 2424 * valid beacon interval falback to def 2425 */ 2426 if (!scan_entry->bcn_int) 2427 scan_entry->bcn_int = 100; 2428 scan_entry->cap_info.value = le16toh(bcn->capability.value); 2429 qdf_mem_copy(scan_entry->tsf_info.data, 2430 bcn->timestamp, 8); 2431 scan_entry->erp = ERP_NON_ERP_PRESENT; 2432 2433 scan_entry->scan_entry_time = 2434 qdf_mc_timer_get_system_time(); 2435 2436 scan_entry->raw_frame.len = frame_len; 2437 qdf_mem_copy(scan_entry->raw_frame.ptr, 2438 frame, frame_len); 2439 status = util_scan_populate_bcn_ie_list(pdev, scan_entry, &chan_freq, 2440 band_mask); 2441 if (QDF_IS_STATUS_ERROR(status)) { 2442 scm_debug(QDF_MAC_ADDR_FMT": failed to parse beacon IE", 2443 QDF_MAC_ADDR_REF(scan_entry->bssid.bytes)); 2444 qdf_mem_free(scan_entry->raw_frame.ptr); 2445 qdf_mem_free(scan_entry); 2446 return QDF_STATUS_E_FAILURE; 2447 } 2448 2449 ssid = (struct ie_ssid *) 2450 scan_entry->ie_list.ssid; 2451 2452 if (ssid && (ssid->ssid_len > WLAN_SSID_MAX_LEN)) { 2453 qdf_mem_free(scan_entry->raw_frame.ptr); 2454 qdf_mem_free(scan_entry); 2455 return QDF_STATUS_E_FAILURE; 2456 } 2457 2458 if (scan_entry->ie_list.p2p) 2459 scan_entry->is_p2p = true; 2460 2461 if (!chan_freq && util_scan_entry_hecap(scan_entry)) { 2462 status = util_scan_get_chan_from_he_6g_params(pdev, scan_entry, 2463 &chan_freq, 2464 &is_6g_dup_bcon, 2465 band_mask, 2466 recv_freq); 2467 if (QDF_IS_STATUS_ERROR(status)) { 2468 qdf_mem_free(scan_entry->raw_frame.ptr); 2469 qdf_mem_free(scan_entry); 2470 return QDF_STATUS_E_FAILURE; 2471 } 2472 } 2473 2474 if (chan_freq) 2475 scan_entry->channel.chan_freq = chan_freq; 2476 2477 /* If no channel info is present in beacon use meta channel */ 2478 if (!scan_entry->channel.chan_freq) { 2479 scan_entry->channel.chan_freq = recv_freq; 2480 } else if (recv_freq != 2481 scan_entry->channel.chan_freq) { 2482 if (!wlan_reg_is_49ghz_freq(scan_entry->channel.chan_freq) && 2483 !is_6g_dup_bcon) 2484 scan_entry->channel_mismatch = true; 2485 } 2486 2487 if (util_scan_is_hidden_ssid(ssid)) { 2488 scan_entry->ie_list.ssid = NULL; 2489 scan_entry->is_hidden_ssid = true; 2490 } else { 2491 qdf_mem_copy(scan_entry->ssid.ssid, 2492 ssid->ssid, ssid->ssid_len); 2493 scan_entry->ssid.length = ssid->ssid_len; 2494 scan_entry->hidden_ssid_timestamp = 2495 scan_entry->scan_entry_time; 2496 } 2497 qdf_mem_copy(&scan_entry->mbssid_info, mbssid_info, 2498 sizeof(scan_entry->mbssid_info)); 2499 2500 scan_entry->phy_mode = util_scan_get_phymode(pdev, scan_entry); 2501 2502 scan_entry->nss = util_scan_scm_calc_nss_supported_by_ap(scan_entry); 2503 scm_fill_adaptive_11r_cap(scan_entry); 2504 util_scan_set_security(scan_entry); 2505 2506 util_scan_scm_update_bss_with_esp_data(scan_entry); 2507 qbss_load = (struct qbss_load_ie *) 2508 util_scan_entry_qbssload(scan_entry); 2509 if (qbss_load) 2510 scan_entry->qbss_chan_load = qbss_load->qbss_chan_load; 2511 2512 scan_node = qdf_mem_malloc_atomic(sizeof(*scan_node)); 2513 if (!scan_node) { 2514 qdf_mem_free(scan_entry->raw_frame.ptr); 2515 qdf_mem_free(scan_entry); 2516 return QDF_STATUS_E_FAILURE; 2517 } 2518 2519 util_scan_update_ml_info(scan_entry); 2520 2521 scan_node->entry = scan_entry; 2522 qdf_list_insert_front(scan_list, &scan_node->node); 2523 2524 return status; 2525 } 2526 2527 #ifdef WLAN_FEATURE_MBSSID 2528 /* 2529 * util_is_noninh_ie() - find the noninhertance information element 2530 * in the received frame's IE list, so that we can stop inheriting that IE 2531 * in the caller function. 2532 * 2533 * @elem_id: Element ID in the received frame's IE, which is being processed. 2534 * @non_inh_list: pointer to the non inherited list of element IDs or 2535 * list of extension element IDs. 2536 * @len: Length of non inheritance IE list 2537 * 2538 * Return: False if the element ID is not found or else return true 2539 */ 2540 static bool util_is_noninh_ie(uint8_t elem_id, 2541 uint8_t *non_inh_list, 2542 int8_t len) 2543 { 2544 int count; 2545 2546 for (count = 0; count < len; count++) { 2547 if (elem_id == non_inh_list[count]) 2548 return true; 2549 } 2550 2551 return false; 2552 } 2553 2554 /* 2555 * util_scan_find_noninheritance_ie() - find noninheritance information element 2556 * This block of code is to identify if there is any non-inheritance element 2557 * present as part of the nontransmitted BSSID profile. 2558 * @elem_id: element id 2559 * @ies: pointer consisting of IEs 2560 * @len: IE length 2561 * 2562 * Return: NULL if the element ID is not found or if IE pointer is NULL else 2563 * pointer to the first byte of the requested element 2564 */ 2565 static uint8_t 2566 *util_scan_find_noninheritance_ie(uint8_t elem_id, uint8_t *ies, 2567 int32_t len) 2568 { 2569 if (!ies) 2570 return NULL; 2571 2572 while (len >= MIN_IE_LEN && len >= ies[TAG_LEN_POS] + MIN_IE_LEN) { 2573 if ((ies[ID_POS] == elem_id) && 2574 (ies[ELEM_ID_EXTN_POS] == 2575 WLAN_EXTN_ELEMID_NONINHERITANCE)) { 2576 return ies; 2577 } 2578 len -= ies[TAG_LEN_POS] + MIN_IE_LEN; 2579 ies += ies[TAG_LEN_POS] + MIN_IE_LEN; 2580 } 2581 2582 return NULL; 2583 } 2584 #endif 2585 2586 /* 2587 * util_scan_find_ie() - find information element 2588 * @eid: element id 2589 * @ies: pointer consisting of IEs 2590 * @len: IE length 2591 * 2592 * Return: NULL if the element ID is not found or if IE pointer is NULL else 2593 * pointer to the first byte of the requested element 2594 */ 2595 static uint8_t *util_scan_find_ie(uint8_t eid, uint8_t *ies, 2596 int32_t len) 2597 { 2598 if (!ies) 2599 return NULL; 2600 2601 while (len >= 2 && len >= ies[1] + 2) { 2602 if (ies[0] == eid) 2603 return ies; 2604 len -= ies[1] + 2; 2605 ies += ies[1] + 2; 2606 } 2607 2608 return NULL; 2609 } 2610 2611 #ifdef WLAN_FEATURE_MBSSID 2612 static void util_gen_new_bssid(uint8_t *bssid, uint8_t max_bssid, 2613 uint8_t mbssid_index, 2614 uint8_t *new_bssid_addr) 2615 { 2616 uint8_t lsb_n; 2617 int i; 2618 2619 for (i = 0; i < QDF_MAC_ADDR_SIZE; i++) 2620 new_bssid_addr[i] = bssid[i]; 2621 2622 lsb_n = new_bssid_addr[5] & ((1 << max_bssid) - 1); 2623 2624 new_bssid_addr[5] &= ~((1 << max_bssid) - 1); 2625 new_bssid_addr[5] |= (lsb_n + mbssid_index) % (1 << max_bssid); 2626 } 2627 2628 /* 2629 * util_parse_noninheritance_list() - This block of code will be executed only 2630 * if there is a valid non inheritance IE present in the nontx profile. 2631 * Host need not inherit those list of element IDs and list of element ID 2632 * extensions from the transmitted BSSID profile. 2633 * Since non-inheritance element is an element ID extension, it should 2634 * be part of extension element. So first we need to find if there are 2635 * any extension element present in the nontransmitted BSSID profile. 2636 * @extn_elem: If valid, it points to the element ID field of 2637 * extension element tag in the nontransmitted BSSID profile. 2638 * It may or may not have non inheritance tag present. 2639 * _____________________________________________ 2640 * | | | |List of|List of | 2641 * | Element |Length |Element|Element|Element ID | 2642 * | ID | |ID extn| IDs |Extension | 2643 * |_________|_______|_______|_______|___________| 2644 * List of Element IDs: 2645 * __________________ 2646 * | | | 2647 * | Length |Element | 2648 * | |ID List | 2649 * |_________|________| 2650 * List of Element ID Extensions: 2651 * __________________________ 2652 * | | | 2653 * | Length |Element ID | 2654 * | |extension List | 2655 * |_________|________________| 2656 * @elem_list: Element ID list 2657 * @extn_elem_list: Element ID exiension list 2658 * @non_inheritance_ie: Non inheritance IE information 2659 */ 2660 2661 static void util_parse_noninheritance_list(uint8_t *extn_elem, 2662 uint8_t **elem_list, 2663 uint8_t **extn_elem_list, 2664 struct non_inheritance_ie *ninh) 2665 { 2666 int8_t extn_rem_len = 0; 2667 2668 if (extn_elem[ELEM_ID_LIST_LEN_POS] < extn_elem[TAG_LEN_POS]) { 2669 /* 2670 * extn_rem_len represents the number of bytes after 2671 * the length subfield of list of Element IDs. 2672 * So here, extn_rem_len should be equal to 2673 * Element ID list + Length subfield of Element ID 2674 * extension list + Element ID extension list. 2675 * 2676 * Here we have taken two pointers pointing to the 2677 * element ID list and element ID extension list 2678 * which we will use to detect the same elements 2679 * in the transmitted BSSID profile and choose not 2680 * to inherit those elements while constructing the 2681 * frame for nontransmitted BSSID profile. 2682 */ 2683 extn_rem_len = extn_elem[TAG_LEN_POS] - MIN_IE_LEN; 2684 ninh->non_inherit = true; 2685 2686 if (extn_rem_len && extn_elem[ELEM_ID_LIST_LEN_POS]) { 2687 if (extn_rem_len >= extn_elem[ELEM_ID_LIST_LEN_POS]) { 2688 ninh->list_len = 2689 extn_elem[ELEM_ID_LIST_LEN_POS]; 2690 *elem_list = extn_elem + ELEM_ID_LIST_POS; 2691 extn_rem_len -= ninh->list_len; 2692 } else { 2693 /* 2694 * Corrupt frame. length subfield of 2695 * element ID list is greater than 2696 * what it should be. Go ahead with 2697 * frame generation but do not honour 2698 * the non inheritance part. Also, mark 2699 * the element ID in subcopy as 0, so 2700 * that this element info will not 2701 * be copied. 2702 */ 2703 ninh->non_inherit = false; 2704 extn_elem[0] = 0; 2705 } 2706 } 2707 2708 extn_rem_len--; 2709 if (extn_rem_len > 0) { 2710 if (!ninh->list_len) { 2711 ninh->extn_len = 2712 extn_elem[ELEM_ID_LIST_LEN_POS + 1]; 2713 } else { 2714 ninh->extn_len = 2715 extn_elem[ELEM_ID_LIST_POS + 2716 ninh->list_len]; 2717 } 2718 2719 if (extn_rem_len != ninh->extn_len) { 2720 /* 2721 * Corrupt frame. length subfield of 2722 * element ID extn list is not 2723 * what it should be. Go ahead with 2724 * frame generation but do not honour 2725 * the non inheritance part. Also, mark 2726 * the element ID in subcopy as 0, so 2727 * that this element info will not 2728 * be copied. 2729 */ 2730 ninh->non_inherit = false; 2731 extn_elem[0] = 0; 2732 } 2733 2734 if (ninh->extn_len) { 2735 *extn_elem_list = 2736 (extn_elem + ninh->list_len + 2737 ELEM_ID_LIST_POS + 1); 2738 } 2739 } 2740 } 2741 } 2742 2743 #ifdef WLAN_FEATURE_11BE_MLO 2744 /** 2745 * util_handle_rnr_ie_for_mbssid() - parse and modify RNR IE for MBSSID feature 2746 * @rnr: The pointer to RNR IE 2747 * @bssid_index: BSSID index from MBSSID index IE 2748 * @pos: The buffer pointer to save the transformed RNR IE, caller is expected 2749 * to supply a buffer that is at least as big as @rnr 2750 * 2751 * Per the description about Neighbor AP Information field about MLD 2752 * parameters subfield in section 9.4.2.170.2 of Draft P802.11be_D1.4. 2753 * If the reported AP is affiliated with the same MLD of the reporting AP, 2754 * the TBTT information is skipped; If the reported AP is affiliated with 2755 * the same MLD of the nontransmitted BSSID, the TBTT information is 2756 * copied and the MLD ID is changed to 0. 2757 * 2758 * Return: Length of the element written to @pos 2759 */ 2760 static int util_handle_rnr_ie_for_mbssid(const uint8_t *rnr, 2761 uint8_t bssid_index, uint8_t *pos) 2762 { 2763 size_t rnr_len; 2764 const uint8_t *data, *rnr_end; 2765 uint8_t *rnr_new; 2766 struct neighbor_ap_info_field *neighbor_ap_info; 2767 struct rnr_mld_info *mld_param; 2768 uint8_t tbtt_type, tbtt_len, tbtt_count; 2769 uint8_t mld_pos, mld_id; 2770 int32_t i, copy_len; 2771 /* The count of TBTT info field whose MLD ID equals to 0 in a neighbor 2772 * AP information field. 2773 */ 2774 uint32_t tbtt_info_field_count; 2775 /* The total bytes of TBTT info fields whose MLD ID equals to 0 in 2776 * current RNR IE. 2777 */ 2778 uint32_t tbtt_info_field_len = 0; 2779 uint8_t nbr_ap_info_len = sizeof(struct neighbor_ap_info_field); 2780 2781 rnr_len = rnr[TAG_LEN_POS]; 2782 rnr_end = rnr + rnr_len + MIN_IE_LEN; 2783 rnr_new = pos; 2784 qdf_mem_copy(pos, rnr, MIN_IE_LEN); 2785 pos += MIN_IE_LEN; 2786 2787 data = rnr + PAYLOAD_START_POS; 2788 while (data < rnr_end) { 2789 neighbor_ap_info = (struct neighbor_ap_info_field *)data; 2790 tbtt_count = neighbor_ap_info->tbtt_header.tbtt_info_count; 2791 tbtt_len = neighbor_ap_info->tbtt_header.tbtt_info_length; 2792 tbtt_type = neighbor_ap_info->tbtt_header.tbbt_info_fieldtype; 2793 scm_debug("channel number %d, op class %d, bssid_index %d", 2794 neighbor_ap_info->channel_number, 2795 neighbor_ap_info->operting_class, bssid_index); 2796 scm_debug("tbtt_count %d, tbtt_length %d, tbtt_type %d", 2797 tbtt_count, tbtt_len, tbtt_type); 2798 2799 copy_len = tbtt_len * (tbtt_count + 1) + 2800 nbr_ap_info_len; 2801 if (data + copy_len > rnr_end) 2802 return 0; 2803 2804 if (tbtt_len >= 2805 TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM_20MHZ_PSD_MLD_PARAM) 2806 mld_pos = 2807 TBTT_NEIGHBOR_AP_BSSID_S_SSID_BSS_PARAM_20MHZ_PSD; 2808 else 2809 mld_pos = 0; 2810 2811 /* If MLD params do not exist, copy this neighbor AP 2812 * information field. 2813 * Per Draft P802.11be_D1.4, tbtt_type value 1, 2 and 3 2814 * are reserved, 2815 */ 2816 if (mld_pos == 0 || tbtt_type != 0) { 2817 scm_debug("no MLD params, tbtt_type %d", tbtt_type); 2818 qdf_mem_copy(pos, data, copy_len); 2819 pos += copy_len; 2820 data += copy_len; 2821 continue; 2822 } 2823 2824 qdf_mem_copy(pos, data, nbr_ap_info_len); 2825 neighbor_ap_info = (struct neighbor_ap_info_field *)pos; 2826 pos += nbr_ap_info_len; 2827 data += nbr_ap_info_len; 2828 2829 tbtt_info_field_count = 0; 2830 for (i = 0; i < tbtt_count + 1; i++) { 2831 mld_param = (struct rnr_mld_info *)&data[mld_pos]; 2832 mld_id = mld_param->mld_id; 2833 2834 /* Refer to Draft P802.11be_D1.4 2835 * 9.4.2.170.2 Neighbor AP Information field about 2836 * MLD parameters subfield 2837 */ 2838 if (mld_id == 0) { 2839 /* Skip this TBTT information since this 2840 * reported AP is affiliated with the same MLD 2841 * of the reporting AP who sending the frame 2842 * carrying this element. 2843 */ 2844 tbtt_info_field_len += tbtt_len; 2845 data += tbtt_len; 2846 tbtt_info_field_count++; 2847 } else if (mld_id == bssid_index) { 2848 /* Copy this TBTT information and change MLD 2849 * to 0 as this reported AP is affiliated with 2850 * the same MLD of the nontransmitted BSSID. 2851 */ 2852 qdf_mem_copy(pos, data, tbtt_len); 2853 mld_param = 2854 (struct rnr_mld_info *)&pos[mld_pos]; 2855 scm_debug("change MLD ID from %d to 0", 2856 mld_param->mld_id); 2857 mld_param->mld_id = 0; 2858 data += tbtt_len; 2859 pos += tbtt_len; 2860 } else { 2861 qdf_mem_copy(pos, data, tbtt_len); 2862 data += tbtt_len; 2863 pos += tbtt_len; 2864 } 2865 } 2866 2867 scm_debug("skip %d neighbor info", tbtt_info_field_count); 2868 if (tbtt_info_field_count == (tbtt_count + 1)) { 2869 /* If all the TBTT information are skipped, then also 2870 * revert the neighbor AP info which has been copied. 2871 */ 2872 pos -= nbr_ap_info_len; 2873 tbtt_info_field_len += nbr_ap_info_len; 2874 } else { 2875 neighbor_ap_info->tbtt_header.tbtt_info_count -= 2876 tbtt_info_field_count; 2877 } 2878 } 2879 2880 rnr_new[TAG_LEN_POS] = rnr_len - tbtt_info_field_len; 2881 if (rnr_new[TAG_LEN_POS] > 0) 2882 rnr_len = rnr_new[TAG_LEN_POS] + MIN_IE_LEN; 2883 else 2884 rnr_len = 0; 2885 2886 return rnr_len; 2887 } 2888 #else 2889 static int util_handle_rnr_ie_for_mbssid(const uint8_t *rnr, 2890 uint8_t bssid_index, uint8_t *pos) 2891 { 2892 return 0; 2893 } 2894 #endif 2895 2896 static uint32_t util_gen_new_ie(uint8_t *ie, uint32_t ielen, 2897 uint8_t *subelement, 2898 size_t subie_len, uint8_t *new_ie, 2899 uint8_t bssid_index) 2900 { 2901 uint8_t *pos, *tmp; 2902 const uint8_t *tmp_old, *tmp_new; 2903 uint8_t *sub_copy, *extn_elem = NULL; 2904 struct non_inheritance_ie ninh = {0}; 2905 uint8_t *elem_list = NULL, *extn_elem_list = NULL; 2906 size_t tmp_rem_len; 2907 2908 /* copy subelement as we need to change its content to 2909 * mark an ie after it is processed. 2910 */ 2911 sub_copy = qdf_mem_malloc(subie_len); 2912 if (!sub_copy) 2913 return 0; 2914 qdf_mem_copy(sub_copy, subelement, subie_len); 2915 2916 pos = &new_ie[0]; 2917 2918 /* new ssid */ 2919 tmp_new = util_scan_find_ie(WLAN_ELEMID_SSID, sub_copy, subie_len); 2920 if (tmp_new) { 2921 scm_debug(" SSID " QDF_SSID_FMT, 2922 QDF_SSID_REF(tmp_new[1], 2923 &tmp_new[PAYLOAD_START_POS])); 2924 if ((pos + tmp_new[1] + MIN_IE_LEN) <= 2925 (new_ie + ielen)) { 2926 qdf_mem_copy(pos, tmp_new, 2927 (tmp_new[1] + MIN_IE_LEN)); 2928 pos += (tmp_new[1] + MIN_IE_LEN); 2929 } 2930 } 2931 2932 extn_elem = util_scan_find_noninheritance_ie(WLAN_ELEMID_EXTN_ELEM, 2933 sub_copy, subie_len); 2934 2935 if (extn_elem && extn_elem[TAG_LEN_POS]) { 2936 util_parse_noninheritance_list(extn_elem, &elem_list, 2937 &extn_elem_list, &ninh); 2938 } 2939 2940 /* go through IEs in ie (skip SSID) and subelement, 2941 * merge them into new_ie 2942 */ 2943 tmp_old = util_scan_find_ie(WLAN_ELEMID_SSID, ie, ielen); 2944 tmp_old = (tmp_old) ? tmp_old + tmp_old[1] + MIN_IE_LEN : ie; 2945 2946 while (((tmp_old + tmp_old[1] + MIN_IE_LEN) - ie) <= ielen) { 2947 ninh.non_inh_ie_found = 0; 2948 if (ninh.non_inherit) { 2949 if (ninh.list_len) { 2950 ninh.non_inh_ie_found = 2951 util_is_noninh_ie(tmp_old[0], 2952 elem_list, 2953 ninh.list_len); 2954 } 2955 2956 if (!ninh.non_inh_ie_found && 2957 ninh.extn_len && 2958 (tmp_old[0] == WLAN_ELEMID_EXTN_ELEM)) { 2959 ninh.non_inh_ie_found = 2960 util_is_noninh_ie(tmp_old[2], 2961 extn_elem_list, 2962 ninh.extn_len); 2963 } 2964 } 2965 2966 if (ninh.non_inh_ie_found || (tmp_old[0] == 0)) { 2967 tmp_old += tmp_old[1] + MIN_IE_LEN; 2968 continue; 2969 } 2970 2971 tmp = (uint8_t *)util_scan_find_ie(tmp_old[0], sub_copy, 2972 subie_len); 2973 if (!tmp) { 2974 /* ie in old ie but not in subelement */ 2975 if (tmp_old[0] == WLAN_ELEMID_REDUCED_NEIGHBOR_REPORT) { 2976 /* handle rnr ie for mbssid*/ 2977 pos += 2978 util_handle_rnr_ie_for_mbssid(tmp_old, 2979 bssid_index, 2980 pos); 2981 } else if (tmp_old[0] != WLAN_ELEMID_MULTIPLE_BSSID) { 2982 if ((pos + tmp_old[1] + MIN_IE_LEN) <= 2983 (new_ie + ielen)) { 2984 qdf_mem_copy(pos, tmp_old, 2985 (tmp_old[1] + 2986 MIN_IE_LEN)); 2987 pos += tmp_old[1] + MIN_IE_LEN; 2988 } 2989 } 2990 } else { 2991 /* ie in transmitting ie also in subelement, 2992 * copy from subelement and flag the ie in subelement 2993 * as copied (by setting eid field to 0xff). 2994 * To determine if the vendor ies are same: 2995 * 1. For Cisco OUI, compare only OUI + type 2996 * 2. For other OUI, compare OUI + type + subType 2997 */ 2998 tmp_rem_len = subie_len - (tmp - sub_copy); 2999 if (tmp_old[0] == WLAN_ELEMID_VENDOR && 3000 tmp_rem_len >= MIN_VENDOR_TAG_LEN) { 3001 /* If Vendor IE also presents in STA profile, 3002 * then ignore the Vendor IE which is for 3003 * reporting STA. It only needs to copy Vendor 3004 * IE from STA profile for reported BSSID. 3005 * The copy happens when going through the 3006 * remaining IEs. 3007 */ 3008 ; 3009 } else if (tmp_old[0] == WLAN_ELEMID_EXTN_ELEM) { 3010 if (tmp_old[PAYLOAD_START_POS] == 3011 tmp[PAYLOAD_START_POS]) { 3012 /* same ie, copy from subelement */ 3013 if ((pos + tmp[1] + MIN_IE_LEN) <= 3014 (new_ie + ielen)) { 3015 qdf_mem_copy(pos, tmp, 3016 tmp[1] + 3017 MIN_IE_LEN); 3018 pos += tmp[1] + MIN_IE_LEN; 3019 tmp[0] = 0; 3020 } 3021 } else { 3022 if ((pos + tmp_old[1] + MIN_IE_LEN) <= 3023 (new_ie + ielen)) { 3024 qdf_mem_copy(pos, tmp_old, 3025 tmp_old[1] + 3026 MIN_IE_LEN); 3027 pos += tmp_old[1] + 3028 MIN_IE_LEN; 3029 } 3030 } 3031 3032 } else { 3033 /* copy ie from subelement into new ie */ 3034 if ((pos + tmp[1] + MIN_IE_LEN) <= 3035 (new_ie + ielen)) { 3036 qdf_mem_copy(pos, tmp, 3037 tmp[1] + MIN_IE_LEN); 3038 pos += tmp[1] + MIN_IE_LEN; 3039 tmp[0] = 0; 3040 } 3041 } 3042 } 3043 3044 if (((tmp_old + tmp_old[1] + MIN_IE_LEN) - ie) >= ielen) 3045 break; 3046 3047 tmp_old += tmp_old[1] + MIN_IE_LEN; 3048 } 3049 3050 /* go through subelement again to check if there is any ie not 3051 * copied to new ie, skip ssid, capability, bssid-index ie 3052 */ 3053 tmp_new = sub_copy; 3054 while (((tmp_new + tmp_new[1] + MIN_IE_LEN) - sub_copy) <= 3055 subie_len) { 3056 if (!(tmp_new[0] == WLAN_ELEMID_NONTX_BSSID_CAP || 3057 tmp_new[0] == WLAN_ELEMID_SSID || 3058 tmp_new[0] == WLAN_ELEMID_MULTI_BSSID_IDX || 3059 ((tmp_new[0] == WLAN_ELEMID_EXTN_ELEM) && 3060 (tmp_new[2] == WLAN_EXTN_ELEMID_NONINHERITANCE)))) { 3061 if ((pos + tmp_new[1] + MIN_IE_LEN) <= 3062 (new_ie + ielen)) { 3063 qdf_mem_copy(pos, tmp_new, 3064 tmp_new[1] + MIN_IE_LEN); 3065 pos += tmp_new[1] + MIN_IE_LEN; 3066 } 3067 } 3068 if (((tmp_new + tmp_new[1] + MIN_IE_LEN) - sub_copy) >= 3069 subie_len) 3070 break; 3071 tmp_new += tmp_new[1] + MIN_IE_LEN; 3072 } 3073 3074 qdf_mem_free(sub_copy); 3075 3076 if (pos > new_ie) 3077 return pos - new_ie; 3078 else 3079 return 0; 3080 } 3081 3082 static enum nontx_profile_reasoncode 3083 util_handle_nontx_prof(uint8_t *mbssid_elem, uint8_t *subelement, 3084 uint8_t *next_subelement, 3085 struct scan_mbssid_info *mbssid_info, 3086 char *bssid, char *new_bssid) 3087 { 3088 uint8_t *mbssid_index_ie; 3089 uint32_t prof_len; 3090 3091 prof_len = subelement[TAG_LEN_POS]; 3092 /* 3093 * If we are executing the split portion of the nontx 3094 * profile present in the subsequent MBSSID, then there 3095 * is no need of any sanity check for valid BSS profile 3096 */ 3097 3098 if (mbssid_info->split_prof_continue) { 3099 if ((subelement[ID_POS] != 0) || 3100 (subelement[TAG_LEN_POS] < SPLIT_PROF_DATA_LEAST_LEN)) { 3101 return INVALID_SPLIT_PROF; 3102 } 3103 } else { 3104 if ((subelement[ID_POS] != 0) || 3105 (subelement[TAG_LEN_POS] < VALID_ELEM_LEAST_LEN)) { 3106 /* not a valid BSS profile */ 3107 return INVALID_NONTX_PROF; 3108 } 3109 } 3110 3111 if (mbssid_info->split_profile) { 3112 if (next_subelement[PAYLOAD_START_POS] != 3113 WLAN_ELEMID_NONTX_BSSID_CAP) { 3114 mbssid_info->prof_residue = true; 3115 } 3116 } 3117 3118 if (!mbssid_info->split_prof_continue && 3119 ((subelement[PAYLOAD_START_POS] != WLAN_ELEMID_NONTX_BSSID_CAP) || 3120 (subelement[NONTX_BSSID_CAP_TAG_LEN_POS] != CAP_INFO_LEN))) { 3121 /* The first element within the Nontransmitted 3122 * BSSID Profile is not the Nontransmitted 3123 * BSSID Capability element. 3124 */ 3125 return INVALID_NONTX_PROF; 3126 } 3127 3128 /* found a Nontransmitted BSSID Profile */ 3129 mbssid_index_ie = 3130 util_scan_find_ie(WLAN_ELEMID_MULTI_BSSID_IDX, 3131 (subelement + PAYLOAD_START_POS), prof_len); 3132 3133 if (!mbssid_index_ie) { 3134 if (!mbssid_info->prof_residue) 3135 return INVALID_NONTX_PROF; 3136 3137 mbssid_info->skip_bssid_copy = true; 3138 } else if ((mbssid_index_ie[TAG_LEN_POS] < 1) || 3139 (mbssid_index_ie[BSS_INDEX_POS] == 0)) { 3140 /* No valid Multiple BSSID-Index element */ 3141 return INVALID_NONTX_PROF; 3142 } 3143 3144 if (!mbssid_info->skip_bssid_copy) { 3145 qdf_mem_copy(mbssid_info->trans_bssid, 3146 bssid, QDF_MAC_ADDR_SIZE); 3147 mbssid_info->profile_num = 3148 mbssid_index_ie[BSS_INDEX_POS]; 3149 util_gen_new_bssid(bssid, 3150 mbssid_elem[MBSSID_INDICATOR_POS], 3151 mbssid_index_ie[BSS_INDEX_POS], 3152 new_bssid); 3153 } 3154 /* In single MBSS IE, there could be subelement holding 3155 * remaining vendor IEs of non tx profile from last MBSS IE 3156 * [split profile] and new non tx profile, hence reset 3157 * skip_bssid_copy flag after each subelement processing 3158 */ 3159 mbssid_info->skip_bssid_copy = false; 3160 return VALID_NONTX_PROF; 3161 } 3162 3163 /* 3164 * What's split profile: 3165 * If any nontransmitted BSSID profile is fragmented across 3166 * multiple MBSSID elements, then it is called split profile. 3167 * For a split profile to exist we need to have at least two 3168 * MBSSID elements as part of the RX beacon or probe response 3169 * Hence, first we need to identify the next MBSSID element 3170 * and check for the 5th bit from the starting of the next 3171 * MBSSID IE and if it does not have Nontransmitted BSSID 3172 * capability element, then it's a split profile case. 3173 */ 3174 static bool util_scan_is_split_prof_found(uint8_t *next_elem, 3175 uint8_t *ie, uint32_t ielen) 3176 { 3177 uint8_t *next_mbssid_elem; 3178 3179 if (next_elem[0] == WLAN_ELEMID_MULTIPLE_BSSID) { 3180 if ((next_elem[TAG_LEN_POS] >= VALID_ELEM_LEAST_LEN) && 3181 (next_elem[SUBELEM_DATA_POS_FROM_MBSSID] != 3182 WLAN_ELEMID_NONTX_BSSID_CAP)) { 3183 return true; 3184 } 3185 } else { 3186 next_mbssid_elem = 3187 util_scan_find_ie(WLAN_ELEMID_MULTIPLE_BSSID, 3188 next_elem, 3189 ielen - (next_elem - ie)); 3190 if (!next_mbssid_elem) 3191 return false; 3192 3193 if ((next_mbssid_elem[TAG_LEN_POS] >= VALID_ELEM_LEAST_LEN) && 3194 (next_mbssid_elem[SUBELEM_DATA_POS_FROM_MBSSID] != 3195 WLAN_ELEMID_NONTX_BSSID_CAP)) { 3196 return true; 3197 } 3198 } 3199 3200 return false; 3201 } 3202 3203 static QDF_STATUS util_scan_parse_mbssid(struct wlan_objmgr_pdev *pdev, 3204 uint8_t *frame, qdf_size_t frame_len, 3205 uint32_t frm_subtype, 3206 struct mgmt_rx_event_params *rx_param, 3207 qdf_list_t *scan_list) 3208 { 3209 struct wlan_bcn_frame *bcn; 3210 struct wlan_frame_hdr *hdr; 3211 struct scan_mbssid_info mbssid_info = {0}; 3212 QDF_STATUS status; 3213 uint8_t *pos, *subelement, *next_elem; 3214 uint8_t *mbssid_elem; 3215 uint32_t subie_len, new_ie_len, ielen; 3216 uint8_t *next_subelement = NULL; 3217 uint8_t new_bssid[QDF_MAC_ADDR_SIZE], bssid[QDF_MAC_ADDR_SIZE]; 3218 uint8_t *new_ie, *split_prof_start = NULL, *split_prof_end = NULL; 3219 uint8_t *ie, *new_frame = NULL; 3220 int new_frame_len = 0, split_prof_len = 0; 3221 enum nontx_profile_reasoncode retval; 3222 uint8_t *nontx_profile = NULL; 3223 3224 hdr = (struct wlan_frame_hdr *)frame; 3225 bcn = (struct wlan_bcn_frame *)(frame + sizeof(struct wlan_frame_hdr)); 3226 ie = (uint8_t *)&bcn->ie; 3227 ielen = (uint16_t)(frame_len - 3228 sizeof(struct wlan_frame_hdr) - 3229 offsetof(struct wlan_bcn_frame, ie)); 3230 qdf_mem_copy(bssid, hdr->i_addr3, QDF_MAC_ADDR_SIZE); 3231 3232 if (!util_scan_find_ie(WLAN_ELEMID_MULTIPLE_BSSID, ie, ielen)) 3233 return QDF_STATUS_E_FAILURE; 3234 3235 pos = ie; 3236 3237 new_ie = qdf_mem_malloc(ielen); 3238 if (!new_ie) 3239 return QDF_STATUS_E_NOMEM; 3240 3241 while (pos < (ie + ielen + MIN_IE_LEN)) { 3242 mbssid_elem = 3243 util_scan_find_ie(WLAN_ELEMID_MULTIPLE_BSSID, pos, 3244 ielen - (pos - ie)); 3245 if (!mbssid_elem) 3246 break; 3247 3248 mbssid_info.profile_count = 3249 (1 << mbssid_elem[MBSSID_INDICATOR_POS]); 3250 3251 next_elem = 3252 mbssid_elem + mbssid_elem[TAG_LEN_POS] + MIN_IE_LEN; 3253 3254 /* Skip Element ID, Len, MaxBSSID Indicator */ 3255 if (!mbssid_info.split_profile && 3256 (mbssid_elem[TAG_LEN_POS] < VALID_ELEM_LEAST_LEN)) { 3257 break; 3258 } 3259 3260 /* 3261 * Find if the next IE is MBSSID, if not, then scan through 3262 * the IE list and find the next MBSSID tag, if present. 3263 * Once we find the MBSSID tag, check if this MBSSID tag has 3264 * the other fragmented part of the non Tx profile. 3265 */ 3266 3267 mbssid_info.split_profile = 3268 util_scan_is_split_prof_found(next_elem, ie, ielen); 3269 3270 for (subelement = mbssid_elem + SUBELEMENT_START_POS; 3271 subelement < (next_elem - 1); 3272 subelement += MIN_IE_LEN + subelement[TAG_LEN_POS]) { 3273 subie_len = subelement[TAG_LEN_POS]; 3274 3275 /* 3276 * if prof_residue is true, that means we are 3277 * in the continuation of the fragmented profile part, 3278 * present in the next MBSSD IE else this profile 3279 * is a non fragmented non tx BSSID profile. 3280 */ 3281 3282 if (mbssid_info.prof_residue) 3283 mbssid_info.split_prof_continue = true; 3284 else 3285 mbssid_info.split_prof_continue = false; 3286 3287 if (subie_len > MAX_SUBELEM_LEN) { 3288 scm_err_rl("Corrupt frame with subie_len: %d\n" 3289 "split_prof_continue: %d\n" 3290 "prof_residue: %d\n", 3291 subie_len, 3292 mbssid_info.split_prof_continue, 3293 mbssid_info.prof_residue); 3294 if (mbssid_info.split_prof_continue) { 3295 qdf_mem_free(split_prof_start); 3296 split_prof_start = NULL; 3297 } 3298 3299 qdf_mem_free(new_ie); 3300 return QDF_STATUS_E_INVAL; 3301 } 3302 3303 if ((next_elem - subelement) < 3304 (MIN_IE_LEN + subie_len)) 3305 break; 3306 3307 next_subelement = subelement + subie_len + MIN_IE_LEN; 3308 retval = util_handle_nontx_prof(mbssid_elem, subelement, 3309 next_subelement, 3310 &mbssid_info, 3311 bssid, new_bssid); 3312 3313 if (retval == INVALID_SPLIT_PROF) { 3314 scm_err_rl("Corrupt frame with ID_POS: %d\n" 3315 "TAG_LEN_POS: %d\n", 3316 subelement[ID_POS], 3317 subelement[TAG_LEN_POS]); 3318 qdf_mem_free(split_prof_start); 3319 split_prof_start = NULL; 3320 qdf_mem_free(new_ie); 3321 return QDF_STATUS_E_INVAL; 3322 } else if (retval == INVALID_NONTX_PROF) { 3323 continue; 3324 } 3325 3326 /* 3327 * Merging parts of nontx profile- 3328 * Just for understanding, let's make an assumption 3329 * that nontx profile is fragmented across MBSSIE1 3330 * and MBSSIE2. 3331 * mbssid_info.prof_residue being set indicates 3332 * that the ongoing nontx profile is part of split 3333 * profile, whose other fragmented part is present 3334 * in MBSSIE2. 3335 * So once prof_residue is set, we need to 3336 * identify whether we are accessing the split 3337 * profile in MBSSIE1 or MBSSIE2. 3338 * If we are in MBSSIE1, then copy the part of split 3339 * profile from MBSSIE1 into a new buffer and then 3340 * move to the next part of the split profile which 3341 * is present in MBSSIE2 and append that part into 3342 * the new buffer. 3343 * Once the full profile is accumulated, go ahead with 3344 * the ie generation and length calculation of the 3345 * new frame. 3346 */ 3347 3348 if (mbssid_info.prof_residue) { 3349 if (!mbssid_info.split_prof_continue) { 3350 split_prof_start = 3351 qdf_mem_malloc(ielen); 3352 if (!split_prof_start) { 3353 scm_err_rl("Malloc failed"); 3354 qdf_mem_free(new_ie); 3355 return QDF_STATUS_E_NOMEM; 3356 } 3357 3358 qdf_mem_copy(split_prof_start, 3359 subelement, 3360 (subie_len + 3361 MIN_IE_LEN)); 3362 split_prof_end = (split_prof_start + 3363 subie_len + 3364 MIN_IE_LEN); 3365 break; 3366 } 3367 3368 /* 3369 * Currently we are accessing other part of the 3370 * split profile present in the subsequent 3371 * MBSSIE. There is a possibility that one 3372 * non tx profile is spread across more than 3373 * two MBSSID tag as well. This code will 3374 * handle such scenario. 3375 */ 3376 3377 if (split_prof_end) { 3378 qdf_mem_copy(split_prof_end, 3379 (subelement + MIN_IE_LEN), 3380 subie_len); 3381 split_prof_end += subie_len; 3382 } 3383 3384 /* 3385 * When to stop the process of accumulating 3386 * parts of split profile, is decided by 3387 * mbssid_info.prof_residue. prof_residue 3388 * could be made false if there is not any 3389 * continuation of the split profile. 3390 * which could be identified by two factors 3391 * 1. By checking if the next MBSSIE's first 3392 * non tx profile is not a fragmented one or 3393 * 2. there is a probability that first 3394 * subelement of MBSSIE2 is end if split 3395 * profile and the next subelement of MBSSIE2 3396 * is a non split one. 3397 */ 3398 3399 if (!mbssid_info.split_profile || 3400 (next_subelement[PAYLOAD_START_POS] == 3401 WLAN_ELEMID_NONTX_BSSID_CAP)) { 3402 mbssid_info.prof_residue = false; 3403 } 3404 3405 /* 3406 * Until above mentioned conditions are met, 3407 * we need to iterate and keep accumulating 3408 * the split profile contents. 3409 */ 3410 3411 if (mbssid_info.prof_residue) 3412 break; 3413 3414 if (split_prof_end) { 3415 split_prof_len = 3416 (split_prof_end - 3417 split_prof_start - MIN_IE_LEN); 3418 } 3419 } 3420 3421 if (mbssid_info.split_prof_continue) { 3422 nontx_profile = split_prof_start; 3423 subie_len = split_prof_len; 3424 } else { 3425 nontx_profile = subelement; 3426 } 3427 3428 new_ie_len = 3429 util_gen_new_ie(ie, ielen, 3430 (nontx_profile + 3431 PAYLOAD_START_POS), 3432 subie_len, new_ie, 3433 mbssid_info.profile_num); 3434 3435 if (!new_ie_len) { 3436 if (mbssid_info.split_prof_continue) { 3437 qdf_mem_free(split_prof_start); 3438 split_prof_start = NULL; 3439 } 3440 continue; 3441 } 3442 3443 new_frame_len = frame_len - ielen + new_ie_len; 3444 3445 if (new_frame_len < 0 || new_frame_len > frame_len) { 3446 if (mbssid_info.split_prof_continue) { 3447 qdf_mem_free(split_prof_start); 3448 split_prof_start = NULL; 3449 } 3450 qdf_mem_free(new_ie); 3451 scm_err("Invalid frame:Stop MBSSIE parsing"); 3452 scm_err("Frame_len: %zu,ielen:%u,new_ie_len:%u", 3453 frame_len, ielen, new_ie_len); 3454 return QDF_STATUS_E_INVAL; 3455 } 3456 3457 new_frame = qdf_mem_malloc(new_frame_len); 3458 if (!new_frame) { 3459 if (mbssid_info.split_prof_continue) { 3460 qdf_mem_free(split_prof_start); 3461 split_prof_start = NULL; 3462 } 3463 qdf_mem_free(new_ie); 3464 scm_err_rl("Malloc for new_frame failed"); 3465 scm_err_rl("split_prof_continue: %d", 3466 mbssid_info.split_prof_continue); 3467 return QDF_STATUS_E_NOMEM; 3468 } 3469 3470 /* 3471 * Copy the header(24byte), timestamp(8 byte), 3472 * beaconinterval(2byte) and capability(2byte) 3473 */ 3474 qdf_mem_copy(new_frame, frame, FIXED_LENGTH); 3475 /* Copy the new ie generated from MBSSID profile*/ 3476 hdr = (struct wlan_frame_hdr *)new_frame; 3477 qdf_mem_copy(hdr->i_addr2, new_bssid, 3478 QDF_MAC_ADDR_SIZE); 3479 qdf_mem_copy(hdr->i_addr3, new_bssid, 3480 QDF_MAC_ADDR_SIZE); 3481 bcn = (struct wlan_bcn_frame *) 3482 (new_frame + sizeof(struct wlan_frame_hdr)); 3483 /* update the non-tx capability */ 3484 qdf_mem_copy(&bcn->capability, 3485 nontx_profile + CAP_INFO_POS, 3486 CAP_INFO_LEN); 3487 3488 /* Copy the new ie generated from MBSSID profile*/ 3489 qdf_mem_copy(new_frame + 3490 offsetof(struct wlan_bcn_frame, ie) + 3491 sizeof(struct wlan_frame_hdr), 3492 new_ie, new_ie_len); 3493 status = util_scan_gen_scan_entry(pdev, new_frame, 3494 new_frame_len, 3495 frm_subtype, 3496 rx_param, 3497 &mbssid_info, 3498 scan_list); 3499 if (QDF_IS_STATUS_ERROR(status)) { 3500 if (mbssid_info.split_prof_continue) { 3501 qdf_mem_free(split_prof_start); 3502 split_prof_start = NULL; 3503 qdf_mem_zero(&mbssid_info, 3504 sizeof(mbssid_info)); 3505 } 3506 qdf_mem_free(new_frame); 3507 scm_err_rl("failed to generate a scan entry"); 3508 scm_err_rl("split_prof_continue: %d", 3509 mbssid_info.split_prof_continue); 3510 break; 3511 } 3512 /* scan entry makes its own copy so free the frame*/ 3513 if (mbssid_info.split_prof_continue) { 3514 qdf_mem_free(split_prof_start); 3515 split_prof_start = NULL; 3516 } 3517 qdf_mem_free(new_frame); 3518 } 3519 3520 pos = next_elem; 3521 } 3522 qdf_mem_free(new_ie); 3523 3524 if (split_prof_start) 3525 qdf_mem_free(split_prof_start); 3526 3527 return QDF_STATUS_SUCCESS; 3528 } 3529 #else 3530 static QDF_STATUS util_scan_parse_mbssid(struct wlan_objmgr_pdev *pdev, 3531 uint8_t *frame, qdf_size_t frame_len, 3532 uint32_t frm_subtype, 3533 struct mgmt_rx_event_params *rx_param, 3534 qdf_list_t *scan_list) 3535 { 3536 return QDF_STATUS_SUCCESS; 3537 } 3538 #endif 3539 3540 #if defined(WLAN_FEATURE_11BE) && defined(WLAN_FEATURE_11BE_MLO_MBSSID) 3541 /* 3542 * util_scan_gen_txvap_scan_entry() - Strip out the MBSSID tag from the received 3543 * frame and update the modified frame length before generating a scan entry. 3544 * It is redundant to have MBSSID information as part of the TX vap/ profile 3545 * specific scan entry. 3546 * 3547 * @pdev: pdev context 3548 * @frame: Unsoiled frame passed from util_scan_parse_beacon_frame() 3549 * @frame_len: Length of the unsoiled frame 3550 * @ie_list: Points to the start of IE list in parent/ unsoiled frame 3551 * @ielen: Length of the complete IE list from parent/ unsoiled frame 3552 * @frm_subtype: Frame subtype 3553 * @rx_param: host mgmt header params 3554 * @scan_list: Scan entry list of bss candidates after filtering 3555 * @mbssid_info: Data structure to carry MBSSID information 3556 * 3557 * Return: False if the scan entry generation is not successful 3558 */ 3559 static QDF_STATUS 3560 util_scan_gen_txvap_scan_entry(struct wlan_objmgr_pdev *pdev, 3561 uint8_t *frame, qdf_size_t frame_len, 3562 uint8_t *ie_list, uint32_t ielen, 3563 uint32_t frm_subtype, 3564 struct mgmt_rx_event_params *rx_param, 3565 qdf_list_t *scan_list, 3566 struct scan_mbssid_info *mbssid_info) 3567 { 3568 uint8_t *src_ie, *dest_ptr, *container; 3569 uint16_t new_frame_len, new_ie_len = 0; 3570 uint8_t *trimmed_frame, fixed_len = 0; 3571 QDF_STATUS status = QDF_STATUS_SUCCESS; 3572 3573 /* 3574 * Allocate a buffer to copy only the TX VAP information after 3575 * stripping out the MBSSID IE from the parent beacon. 3576 * The allocation size should be the size of a frame as at 3577 * this point it is unknown what would be the new frame length 3578 * after stripping the MBSSID IE. 3579 */ 3580 container = qdf_mem_malloc(frame_len); 3581 if (!container) { 3582 scm_err_rl("Malloc for container failed"); 3583 return QDF_STATUS_E_NOMEM; 3584 } 3585 3586 dest_ptr = &container[0]; 3587 fixed_len = sizeof(struct wlan_frame_hdr) + 3588 offsetof(struct wlan_bcn_frame, ie); 3589 3590 /*Copy the data till IE list before procesisng the IE one by one*/ 3591 qdf_mem_copy(dest_ptr, frame, fixed_len); 3592 3593 dest_ptr += fixed_len; 3594 src_ie = ie_list; 3595 3596 /* 3597 * Go through the IE list from the parent beacon and copy one by one. 3598 * Skip copying it to the container if it's an MBSSID tag. 3599 */ 3600 while (((src_ie + src_ie[TAG_LEN_POS] + MIN_IE_LEN) - 3601 ie_list) <= ielen) { 3602 if (src_ie[ID_POS] == WLAN_ELEMID_MULTIPLE_BSSID) { 3603 src_ie += src_ie[TAG_LEN_POS] + MIN_IE_LEN; 3604 continue; 3605 } 3606 3607 qdf_mem_copy(dest_ptr, src_ie, 3608 (src_ie[TAG_LEN_POS] + MIN_IE_LEN)); 3609 3610 dest_ptr += src_ie[TAG_LEN_POS] + MIN_IE_LEN; 3611 if (((src_ie + src_ie[TAG_LEN_POS] + 3612 MIN_IE_LEN) - ie_list) >= ielen) 3613 break; 3614 3615 src_ie += src_ie[TAG_LEN_POS] + MIN_IE_LEN; 3616 } 3617 3618 if (dest_ptr > container) 3619 new_ie_len = dest_ptr - (container + fixed_len); 3620 3621 new_frame_len = frame_len - ielen + new_ie_len; 3622 3623 /* 3624 * At the start of this handler, we have allocated a memory block 3625 * of size same as a full beacon frame size, as we are not sure 3626 * of what would be the size of the new frame. After stripping out 3627 * the MBSSID tag from the parent beacon, there are some unused 3628 * memory. Hence do another malloc of the new frame length 3629 * (length of the new frame which has only TX VAP information) 3630 * and copy the needed data from the container, then free the 3631 * memory corresponds to container. 3632 * Post copy, use the trimmed frame and the new frame length 3633 * to generate scan entry for the TX profile. 3634 */ 3635 trimmed_frame = qdf_mem_malloc(new_frame_len); 3636 if (!trimmed_frame) { 3637 scm_err_rl("Malloc for trimmed frame failed"); 3638 qdf_mem_free(container); 3639 return QDF_STATUS_E_NOMEM; 3640 } 3641 3642 qdf_mem_copy(trimmed_frame, container, new_frame_len); 3643 qdf_mem_free(container); 3644 3645 status = util_scan_gen_scan_entry(pdev, trimmed_frame, 3646 new_frame_len, 3647 frm_subtype, 3648 rx_param, 3649 mbssid_info, 3650 scan_list); 3651 3652 if (QDF_IS_STATUS_ERROR(status)) 3653 scm_debug_rl("Failed to create a scan entry"); 3654 3655 qdf_mem_free(trimmed_frame); 3656 return status; 3657 } 3658 3659 /* 3660 * util_scan_parse_eht_beacon() : This API will be executed 3661 * only for 11BE platforms as per current design. 3662 * IF MBSSID IE is present in the beacon then 3663 * scan component will create a new entry for 3664 * each BSSID found in the MBSSID 3665 * util_scan_parse_mbssid() takes care of creating 3666 * scan entries for every non tx profile present in 3667 * the MBSSID tag. 3668 * util_scan_gen_txvap_scan_entry() helps in generating 3669 * scan entry for the tx profile. 3670 */ 3671 static QDF_STATUS 3672 util_scan_parse_eht_beacon(struct wlan_objmgr_pdev *pdev, 3673 uint8_t *frame, qdf_size_t frame_len, 3674 uint8_t *ie_list, uint32_t ielen, 3675 uint32_t frm_subtype, 3676 struct mgmt_rx_event_params *rx_param, 3677 qdf_list_t *scan_list, 3678 struct scan_mbssid_info *mbssid_info, 3679 uint8_t *mbssid_ie) 3680 { 3681 QDF_STATUS status = QDF_STATUS_SUCCESS; 3682 3683 if (mbssid_ie) { 3684 status = util_scan_parse_mbssid(pdev, frame, frame_len, 3685 frm_subtype, rx_param, 3686 scan_list); 3687 3688 if (QDF_IS_STATUS_ERROR(status)) { 3689 scm_debug_rl("NonTx prof: Failed to create scan entry"); 3690 return status; 3691 } 3692 3693 status = util_scan_gen_txvap_scan_entry(pdev, frame, 3694 frame_len, ie_list, 3695 ielen, frm_subtype, 3696 rx_param, scan_list, 3697 mbssid_info); 3698 3699 if (QDF_IS_STATUS_ERROR(status)) 3700 scm_debug_rl("TX prof: Failed to create scan entry"); 3701 3702 return status; 3703 } 3704 3705 /*For Non MBSSIE case*/ 3706 status = util_scan_gen_scan_entry(pdev, frame, frame_len, 3707 frm_subtype, rx_param, 3708 mbssid_info, scan_list); 3709 3710 if (QDF_IS_STATUS_ERROR(status)) 3711 scm_debug_rl("Non-MBSSIE frame: Failed to create scan entry"); 3712 3713 return status; 3714 } 3715 3716 static bool 3717 util_scan_is_platform_eht_capable(struct wlan_objmgr_pdev *pdev) 3718 { 3719 struct wlan_objmgr_psoc *psoc = NULL; 3720 struct wlan_lmac_if_tx_ops *tx_ops = NULL; 3721 struct wlan_lmac_if_scan_tx_ops *scan_ops = NULL; 3722 uint8_t pdev_id; 3723 3724 psoc = wlan_pdev_get_psoc(pdev); 3725 if (!psoc) { 3726 scm_debug_rl("psoc is null"); 3727 return false; 3728 } 3729 tx_ops = wlan_psoc_get_lmac_if_txops(psoc); 3730 if (!tx_ops) { 3731 scm_debug_rl("tx_ops is null"); 3732 return false; 3733 } 3734 scan_ops = &tx_ops->scan; 3735 if (!scan_ops) { 3736 scm_debug_rl("scan_ops is null"); 3737 return false; 3738 } 3739 pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 3740 3741 if (scan_ops->is_platform_eht_capable) 3742 return scan_ops->is_platform_eht_capable(psoc, pdev_id); 3743 3744 return false; 3745 } 3746 #else 3747 static QDF_STATUS 3748 util_scan_parse_eht_beacon(struct wlan_objmgr_pdev *pdev, 3749 uint8_t *frame, qdf_size_t frame_len, 3750 uint8_t *ie_list, uint32_t ielen, 3751 uint32_t frm_subtype, 3752 struct mgmt_rx_event_params *rx_param, 3753 qdf_list_t *scan_list, 3754 struct scan_mbssid_info *mbssid_info, 3755 uint8_t *mbssid_ie) 3756 { 3757 return QDF_STATUS_SUCCESS; 3758 } 3759 3760 static bool 3761 util_scan_is_platform_eht_capable(struct wlan_objmgr_pdev *pdev) 3762 { 3763 return false; 3764 } 3765 #endif 3766 3767 static QDF_STATUS 3768 util_scan_parse_beacon_frame(struct wlan_objmgr_pdev *pdev, 3769 uint8_t *frame, 3770 qdf_size_t frame_len, 3771 uint32_t frm_subtype, 3772 struct mgmt_rx_event_params *rx_param, 3773 qdf_list_t *scan_list) 3774 { 3775 struct wlan_bcn_frame *bcn; 3776 struct wlan_frame_hdr *hdr; 3777 uint8_t *mbssid_ie = NULL, *extcap_ie; 3778 uint32_t ie_len = 0; 3779 QDF_STATUS status = QDF_STATUS_E_FAILURE; 3780 struct scan_mbssid_info mbssid_info = { 0 }; 3781 uint8_t *ie_list; 3782 bool eht_support = false; 3783 3784 hdr = (struct wlan_frame_hdr *)frame; 3785 bcn = (struct wlan_bcn_frame *) 3786 (frame + sizeof(struct wlan_frame_hdr)); 3787 ie_list = (uint8_t *)&bcn->ie; 3788 ie_len = (uint16_t)(frame_len - 3789 sizeof(struct wlan_frame_hdr) - 3790 offsetof(struct wlan_bcn_frame, ie)); 3791 3792 extcap_ie = util_scan_find_ie(WLAN_ELEMID_XCAPS, 3793 (uint8_t *)&bcn->ie, ie_len); 3794 /* Process MBSSID when Multiple BSSID (Bit 22) is set in Ext Caps */ 3795 if (extcap_ie && 3796 extcap_ie[1] >= 3 && extcap_ie[1] <= WLAN_EXTCAP_IE_MAX_LEN && 3797 (extcap_ie[4] & 0x40)) { 3798 mbssid_ie = util_scan_find_ie(WLAN_ELEMID_MULTIPLE_BSSID, 3799 (uint8_t *)&bcn->ie, ie_len); 3800 if (mbssid_ie) { 3801 if (mbssid_ie[1] <= 0) { 3802 scm_debug("MBSSID IE length is wrong %d", 3803 mbssid_ie[1]); 3804 return status; 3805 } 3806 qdf_mem_copy(&mbssid_info.trans_bssid, 3807 hdr->i_addr3, QDF_MAC_ADDR_SIZE); 3808 mbssid_info.profile_count = 1 << mbssid_ie[2]; 3809 } 3810 } 3811 3812 eht_support = util_scan_is_platform_eht_capable(pdev); 3813 3814 if (eht_support) { 3815 status = util_scan_parse_eht_beacon(pdev, frame, frame_len, 3816 ie_list, ie_len, 3817 frm_subtype, rx_param, 3818 scan_list, &mbssid_info, 3819 mbssid_ie); 3820 return status; 3821 } 3822 3823 status = util_scan_gen_scan_entry(pdev, frame, frame_len, 3824 frm_subtype, rx_param, 3825 &mbssid_info, 3826 scan_list); 3827 3828 if (mbssid_ie) 3829 status = util_scan_parse_mbssid(pdev, frame, frame_len, 3830 frm_subtype, rx_param, 3831 scan_list); 3832 3833 if (QDF_IS_STATUS_ERROR(status)) 3834 scm_debug_rl("Failed to create scan entry"); 3835 3836 return status; 3837 } 3838 3839 qdf_list_t * 3840 util_scan_unpack_beacon_frame(struct wlan_objmgr_pdev *pdev, uint8_t *frame, 3841 qdf_size_t frame_len, uint32_t frm_subtype, 3842 struct mgmt_rx_event_params *rx_param) 3843 { 3844 qdf_list_t *scan_list; 3845 QDF_STATUS status; 3846 3847 scan_list = qdf_mem_malloc_atomic(sizeof(*scan_list)); 3848 if (!scan_list) { 3849 scm_err("failed to allocate scan_list"); 3850 return NULL; 3851 } 3852 qdf_list_create(scan_list, MAX_SCAN_CACHE_SIZE); 3853 3854 status = util_scan_parse_beacon_frame(pdev, frame, frame_len, 3855 frm_subtype, rx_param, 3856 scan_list); 3857 if (QDF_IS_STATUS_ERROR(status)) { 3858 ucfg_scan_purge_results(scan_list); 3859 return NULL; 3860 } 3861 3862 return scan_list; 3863 } 3864 3865 QDF_STATUS 3866 util_scan_entry_update_mlme_info(struct wlan_objmgr_pdev *pdev, 3867 struct scan_cache_entry *scan_entry) 3868 { 3869 3870 if (!pdev || !scan_entry) { 3871 scm_err("pdev 0x%pK, scan_entry: 0x%pK", pdev, scan_entry); 3872 return QDF_STATUS_E_INVAL; 3873 } 3874 3875 return scm_update_scan_mlme_info(pdev, scan_entry); 3876 } 3877 3878 bool util_is_scan_completed(struct scan_event *event, bool *success) 3879 { 3880 if ((event->type == SCAN_EVENT_TYPE_COMPLETED) || 3881 (event->type == SCAN_EVENT_TYPE_DEQUEUED) || 3882 (event->type == SCAN_EVENT_TYPE_START_FAILED)) { 3883 if ((event->type == SCAN_EVENT_TYPE_COMPLETED) && 3884 (event->reason == SCAN_REASON_COMPLETED)) 3885 *success = true; 3886 else 3887 *success = false; 3888 3889 return true; 3890 } 3891 3892 *success = false; 3893 return false; 3894 } 3895 3896 #if defined(WLAN_SAE_SINGLE_PMK) && defined(WLAN_FEATURE_ROAM_OFFLOAD) 3897 bool 3898 util_scan_entry_single_pmk(struct wlan_objmgr_psoc *psoc, 3899 struct scan_cache_entry *scan_entry) 3900 { 3901 if (scan_entry->ie_list.single_pmk && 3902 wlan_mlme_is_sae_single_pmk_enabled(psoc)) 3903 return true; 3904 3905 return false; 3906 } 3907 #endif 3908