1 /* 2 * wpa_supplicant - MBO 3 * 4 * Copyright(c) 2015 Intel Deutschland GmbH 5 * Contact Information: 6 * Intel Linux Wireless <ilw (at) linux.intel.com> 7 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13 #include "utils/includes.h" 14 15 #include "utils/common.h" 16 #include "common/ieee802_11_defs.h" 17 #include "config.h" 18 #include "wpa_supplicant_i.h" 19 #include "driver_i.h" 20 #include "bss.h" 21 22 /* type + length + oui + oui type */ 23 #define MBO_IE_HEADER 6 24 25 26 static int wpas_mbo_validate_non_pref_chan(u8 oper_class, u8 chan, u8 reason) 27 { 28 if (reason > MBO_NON_PREF_CHAN_REASON_INT_INTERFERENCE) 29 return -1; 30 31 /* Only checking the validity of the channel and oper_class */ 32 if (ieee80211_chan_to_freq(NULL, oper_class, chan) == -1) 33 return -1; 34 35 return 0; 36 } 37 38 39 const u8 * wpas_mbo_get_bss_attr(struct wpa_bss *bss, enum mbo_attr_id attr) 40 { 41 const u8 *mbo, *end; 42 43 if (!bss) 44 return NULL; 45 46 mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE); 47 if (!mbo) 48 return NULL; 49 50 end = mbo + 2 + mbo[1]; 51 mbo += MBO_IE_HEADER; 52 53 return get_ie(mbo, end - mbo, attr); 54 } 55 56 57 static void wpas_mbo_non_pref_chan_attr_body(struct wpa_supplicant *wpa_s, 58 struct wpabuf *mbo, 59 u8 start, u8 end) 60 { 61 u8 i; 62 63 wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].oper_class); 64 65 for (i = start; i < end; i++) 66 wpabuf_put_u8(mbo, wpa_s->non_pref_chan[i].chan); 67 68 wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].preference); 69 wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].reason); 70 wpabuf_put_u8(mbo, wpa_s->non_pref_chan[start].reason_detail); 71 } 72 73 74 static void wpas_mbo_non_pref_chan_attr(struct wpa_supplicant *wpa_s, 75 struct wpabuf *mbo, u8 start, u8 end) 76 { 77 size_t size = end - start + 4; 78 79 if (size + 2 > wpabuf_tailroom(mbo)) 80 return; 81 82 wpabuf_put_u8(mbo, MBO_ATTR_ID_NON_PREF_CHAN_REPORT); 83 wpabuf_put_u8(mbo, size); /* Length */ 84 85 wpas_mbo_non_pref_chan_attr_body(wpa_s, mbo, start, end); 86 } 87 88 89 static void wpas_mbo_non_pref_chan_subelem_hdr(struct wpabuf *mbo, u8 len) 90 { 91 wpabuf_put_u8(mbo, WLAN_EID_VENDOR_SPECIFIC); 92 wpabuf_put_u8(mbo, len); /* Length */ 93 wpabuf_put_be24(mbo, OUI_WFA); 94 wpabuf_put_u8(mbo, MBO_ATTR_ID_NON_PREF_CHAN_REPORT); 95 } 96 97 98 static void wpas_mbo_non_pref_chan_subelement(struct wpa_supplicant *wpa_s, 99 struct wpabuf *mbo, u8 start, 100 u8 end) 101 { 102 size_t size = end - start + 8; 103 104 if (size + 2 > wpabuf_tailroom(mbo)) 105 return; 106 107 wpas_mbo_non_pref_chan_subelem_hdr(mbo, size); 108 wpas_mbo_non_pref_chan_attr_body(wpa_s, mbo, start, end); 109 } 110 111 112 static void wpas_mbo_non_pref_chan_attrs(struct wpa_supplicant *wpa_s, 113 struct wpabuf *mbo, int subelement) 114 { 115 u8 i, start = 0; 116 struct wpa_mbo_non_pref_channel *start_pref; 117 118 if (!wpa_s->non_pref_chan || !wpa_s->non_pref_chan_num) { 119 if (subelement) 120 wpas_mbo_non_pref_chan_subelem_hdr(mbo, 4); 121 return; 122 } 123 start_pref = &wpa_s->non_pref_chan[0]; 124 125 for (i = 1; i <= wpa_s->non_pref_chan_num; i++) { 126 struct wpa_mbo_non_pref_channel *non_pref = NULL; 127 128 if (i < wpa_s->non_pref_chan_num) 129 non_pref = &wpa_s->non_pref_chan[i]; 130 if (!non_pref || 131 non_pref->oper_class != start_pref->oper_class || 132 non_pref->reason != start_pref->reason || 133 non_pref->reason_detail != start_pref->reason_detail || 134 non_pref->preference != start_pref->preference) { 135 if (subelement) 136 wpas_mbo_non_pref_chan_subelement(wpa_s, mbo, 137 start, i); 138 else 139 wpas_mbo_non_pref_chan_attr(wpa_s, mbo, start, 140 i); 141 142 if (!non_pref) 143 return; 144 145 start = i; 146 start_pref = non_pref; 147 } 148 } 149 } 150 151 152 int wpas_mbo_ie(struct wpa_supplicant *wpa_s, u8 *buf, size_t len) 153 { 154 struct wpabuf *mbo; 155 int res; 156 157 if (len < MBO_IE_HEADER + 3 + 7) 158 return 0; 159 160 /* Leave room for the MBO IE header */ 161 mbo = wpabuf_alloc(len - MBO_IE_HEADER); 162 if (!mbo) 163 return 0; 164 165 /* Add non-preferred channels attribute */ 166 wpas_mbo_non_pref_chan_attrs(wpa_s, mbo, 0); 167 168 /* 169 * Send cellular capabilities attribute even if AP does not advertise 170 * cellular capabilities. 171 */ 172 wpabuf_put_u8(mbo, MBO_ATTR_ID_CELL_DATA_CAPA); 173 wpabuf_put_u8(mbo, 1); 174 wpabuf_put_u8(mbo, wpa_s->conf->mbo_cell_capa); 175 176 res = mbo_add_ie(buf, len, wpabuf_head_u8(mbo), wpabuf_len(mbo)); 177 if (!res) 178 wpa_printf(MSG_ERROR, "Failed to add MBO IE"); 179 180 wpabuf_free(mbo); 181 return res; 182 } 183 184 185 static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s, 186 const u8 *data, size_t len) 187 { 188 struct wpabuf *buf; 189 int res; 190 191 /* 192 * Send WNM-Notification Request frame only in case of a change in 193 * non-preferred channels list during association, if the AP supports 194 * MBO. 195 */ 196 if (wpa_s->wpa_state != WPA_COMPLETED || !wpa_s->current_bss || 197 !wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE)) 198 return; 199 200 buf = wpabuf_alloc(4 + len); 201 if (!buf) 202 return; 203 204 wpabuf_put_u8(buf, WLAN_ACTION_WNM); 205 wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ); 206 wpa_s->mbo_wnm_token++; 207 if (wpa_s->mbo_wnm_token == 0) 208 wpa_s->mbo_wnm_token++; 209 wpabuf_put_u8(buf, wpa_s->mbo_wnm_token); 210 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); /* Type */ 211 212 wpabuf_put_data(buf, data, len); 213 214 res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 215 wpa_s->own_addr, wpa_s->bssid, 216 wpabuf_head(buf), wpabuf_len(buf), 0); 217 if (res < 0) 218 wpa_printf(MSG_DEBUG, 219 "Failed to send WNM-Notification Request frame with non-preferred channel list"); 220 221 wpabuf_free(buf); 222 } 223 224 225 static void wpas_mbo_non_pref_chan_changed(struct wpa_supplicant *wpa_s) 226 { 227 struct wpabuf *buf; 228 229 buf = wpabuf_alloc(512); 230 if (!buf) 231 return; 232 233 wpas_mbo_non_pref_chan_attrs(wpa_s, buf, 1); 234 wpas_mbo_send_wnm_notification(wpa_s, wpabuf_head_u8(buf), 235 wpabuf_len(buf)); 236 wpabuf_free(buf); 237 } 238 239 240 static int wpa_non_pref_chan_is_eq(struct wpa_mbo_non_pref_channel *a, 241 struct wpa_mbo_non_pref_channel *b) 242 { 243 return a->oper_class == b->oper_class && a->chan == b->chan; 244 } 245 246 247 /* 248 * wpa_non_pref_chan_cmp - Compare two channels for sorting 249 * 250 * In MBO IE non-preferred channel subelement we can put many channels in an 251 * attribute if they are in the same operating class and have the same 252 * preference, reason, and reason detail. To make it easy for the functions that 253 * build the IE attributes and WNM Request subelements, save the channels sorted 254 * by their oper_class, reason, and reason_detail. 255 */ 256 static int wpa_non_pref_chan_cmp(const void *_a, const void *_b) 257 { 258 const struct wpa_mbo_non_pref_channel *a = _a, *b = _b; 259 260 if (a->oper_class != b->oper_class) 261 return a->oper_class - b->oper_class; 262 if (a->reason != b->reason) 263 return a->reason - b->reason; 264 if (a->reason_detail != b->reason_detail) 265 return a->reason_detail - b->reason_detail; 266 return a->preference - b->preference; 267 } 268 269 270 int wpas_mbo_update_non_pref_chan(struct wpa_supplicant *wpa_s, 271 const char *non_pref_chan) 272 { 273 char *cmd, *token, *context = NULL; 274 struct wpa_mbo_non_pref_channel *chans = NULL, *tmp_chans; 275 size_t num = 0, size = 0; 276 unsigned i; 277 278 wpa_printf(MSG_DEBUG, "MBO: Update non-preferred channels, non_pref_chan=%s", 279 non_pref_chan ? non_pref_chan : "N/A"); 280 281 /* 282 * The shortest channel configuration is 10 characters - commas, 3 283 * colons, and 4 values that one of them (oper_class) is 2 digits or 284 * more. 285 */ 286 if (!non_pref_chan || os_strlen(non_pref_chan) < 10) 287 goto update; 288 289 cmd = os_strdup(non_pref_chan); 290 if (!cmd) 291 return -1; 292 293 while ((token = str_token(cmd, " ", &context))) { 294 struct wpa_mbo_non_pref_channel *chan; 295 int ret; 296 unsigned int _oper_class; 297 unsigned int _chan; 298 unsigned int _preference; 299 unsigned int _reason; 300 unsigned int _reason_detail; 301 302 if (num == size) { 303 size = size ? size * 2 : 1; 304 tmp_chans = os_realloc_array(chans, size, 305 sizeof(*chans)); 306 if (!tmp_chans) { 307 wpa_printf(MSG_ERROR, 308 "Couldn't reallocate non_pref_chan"); 309 goto fail; 310 } 311 chans = tmp_chans; 312 } 313 314 chan = &chans[num]; 315 316 ret = sscanf(token, "%u:%u:%u:%u:%u", &_oper_class, 317 &_chan, &_preference, &_reason, 318 &_reason_detail); 319 if ((ret != 4 && ret != 5) || 320 _oper_class > 255 || _chan > 255 || 321 _preference > 255 || _reason > 65535 || 322 (ret == 5 && _reason_detail > 255)) { 323 wpa_printf(MSG_ERROR, "Invalid non-pref chan input %s", 324 token); 325 goto fail; 326 } 327 chan->oper_class = _oper_class; 328 chan->chan = _chan; 329 chan->preference = _preference; 330 chan->reason = _reason; 331 chan->reason_detail = ret == 4 ? 0 : _reason_detail; 332 333 if (wpas_mbo_validate_non_pref_chan(chan->oper_class, 334 chan->chan, chan->reason)) { 335 wpa_printf(MSG_ERROR, 336 "Invalid non_pref_chan: oper class %d chan %d reason %d", 337 chan->oper_class, chan->chan, chan->reason); 338 goto fail; 339 } 340 341 for (i = 0; i < num; i++) 342 if (wpa_non_pref_chan_is_eq(chan, &chans[i])) 343 break; 344 if (i != num) { 345 wpa_printf(MSG_ERROR, 346 "oper class %d chan %d is duplicated", 347 chan->oper_class, chan->chan); 348 goto fail; 349 } 350 351 num++; 352 } 353 354 os_free(cmd); 355 356 if (chans) { 357 qsort(chans, num, sizeof(struct wpa_mbo_non_pref_channel), 358 wpa_non_pref_chan_cmp); 359 } 360 361 update: 362 os_free(wpa_s->non_pref_chan); 363 wpa_s->non_pref_chan = chans; 364 wpa_s->non_pref_chan_num = num; 365 wpas_mbo_non_pref_chan_changed(wpa_s); 366 367 return 0; 368 369 fail: 370 os_free(chans); 371 os_free(cmd); 372 return -1; 373 } 374 375 376 void wpas_mbo_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ie) 377 { 378 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC); 379 wpabuf_put_u8(ie, 7); 380 wpabuf_put_be24(ie, OUI_WFA); 381 wpabuf_put_u8(ie, MBO_OUI_TYPE); 382 383 wpabuf_put_u8(ie, MBO_ATTR_ID_CELL_DATA_CAPA); 384 wpabuf_put_u8(ie, 1); 385 wpabuf_put_u8(ie, wpa_s->conf->mbo_cell_capa); 386 } 387 388 389 enum chan_allowed { 390 NOT_ALLOWED, ALLOWED 391 }; 392 393 static enum chan_allowed allow_channel(struct hostapd_hw_modes *mode, u8 chan, 394 unsigned int *flags) 395 { 396 int i; 397 398 for (i = 0; i < mode->num_channels; i++) { 399 if (mode->channels[i].chan == chan) 400 break; 401 } 402 403 if (i == mode->num_channels || 404 (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)) 405 return NOT_ALLOWED; 406 407 if (flags) 408 *flags = mode->channels[i].flag; 409 410 return ALLOWED; 411 } 412 413 414 static int get_center_80mhz(struct hostapd_hw_modes *mode, u8 channel) 415 { 416 u8 center_channels[] = {42, 58, 106, 122, 138, 155}; 417 size_t i; 418 419 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 420 return 0; 421 422 for (i = 0; i < ARRAY_SIZE(center_channels); i++) { 423 /* 424 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 425 * so the center channel is 6 channels away from the start/end. 426 */ 427 if (channel >= center_channels[i] - 6 && 428 channel <= center_channels[i] + 6) 429 return center_channels[i]; 430 } 431 432 return 0; 433 } 434 435 436 static enum chan_allowed verify_80mhz(struct hostapd_hw_modes *mode, u8 channel) 437 { 438 u8 center_chan; 439 unsigned int i; 440 441 center_chan = get_center_80mhz(mode, channel); 442 if (!center_chan) 443 return NOT_ALLOWED; 444 445 /* check all the channels are available */ 446 for (i = 0; i < 4; i++) { 447 unsigned int flags; 448 u8 adj_chan = center_chan - 6 + i * 4; 449 450 if (allow_channel(mode, adj_chan, &flags) == NOT_ALLOWED) 451 return NOT_ALLOWED; 452 453 if ((i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) || 454 (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) || 455 (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) || 456 (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))) 457 return NOT_ALLOWED; 458 } 459 460 return ALLOWED; 461 } 462 463 464 static int get_center_160mhz(struct hostapd_hw_modes *mode, u8 channel) 465 { 466 u8 center_channels[] = { 50, 114 }; 467 unsigned int i; 468 469 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 470 return 0; 471 472 for (i = 0; i < ARRAY_SIZE(center_channels); i++) { 473 /* 474 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 475 * so the center channel is 14 channels away from the start/end. 476 */ 477 if (channel >= center_channels[i] - 14 && 478 channel <= center_channels[i] + 14) 479 return center_channels[i]; 480 } 481 482 return 0; 483 } 484 485 486 static enum chan_allowed verify_160mhz(struct hostapd_hw_modes *mode, 487 u8 channel) 488 { 489 u8 center_chan; 490 unsigned int i; 491 492 center_chan = get_center_160mhz(mode, channel); 493 if (!center_chan) 494 return NOT_ALLOWED; 495 496 /* Check all the channels are available */ 497 for (i = 0; i < 8; i++) { 498 unsigned int flags; 499 u8 adj_chan = center_chan - 14 + i * 4; 500 501 if (allow_channel(mode, adj_chan, &flags) == NOT_ALLOWED) 502 return NOT_ALLOWED; 503 504 if ((i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) || 505 (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) || 506 (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) || 507 (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) || 508 (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) || 509 (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) || 510 (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) || 511 (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))) 512 return NOT_ALLOWED; 513 } 514 515 return ALLOWED; 516 } 517 518 519 enum chan_allowed verify_channel(struct hostapd_hw_modes *mode, u8 channel, 520 u8 bw) 521 { 522 unsigned int flag = 0; 523 enum chan_allowed res, res2; 524 525 res2 = res = allow_channel(mode, channel, &flag); 526 if (bw == BW40MINUS) { 527 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 528 return NOT_ALLOWED; 529 res2 = allow_channel(mode, channel - 4, NULL); 530 } else if (bw == BW40PLUS) { 531 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 532 return NOT_ALLOWED; 533 res2 = allow_channel(mode, channel + 4, NULL); 534 } else if (bw == BW80) { 535 res2 = verify_80mhz(mode, channel); 536 } else if (bw == BW160) { 537 res2 = verify_160mhz(mode, channel); 538 } 539 540 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 541 return NOT_ALLOWED; 542 543 return ALLOWED; 544 } 545 546 547 static int wpas_op_class_supported(struct wpa_supplicant *wpa_s, 548 const struct oper_class_map *op_class) 549 { 550 int chan; 551 size_t i; 552 struct hostapd_hw_modes *mode; 553 554 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, op_class->mode); 555 if (!mode) 556 return 0; 557 558 if (op_class->op_class == 128 || op_class->op_class == 130) { 559 u8 channels[] = { 42, 58, 106, 122, 138, 155 }; 560 561 for (i = 0; i < ARRAY_SIZE(channels); i++) { 562 if (verify_channel(mode, channels[i], op_class->bw) == 563 NOT_ALLOWED) 564 return 0; 565 } 566 567 return 1; 568 } 569 570 if (op_class->op_class == 129) { 571 if (verify_channel(mode, 50, op_class->bw) == NOT_ALLOWED || 572 verify_channel(mode, 114, op_class->bw) == NOT_ALLOWED) 573 return 0; 574 575 return 1; 576 } 577 578 for (chan = op_class->min_chan; chan <= op_class->max_chan; 579 chan += op_class->inc) { 580 if (verify_channel(mode, chan, op_class->bw) == NOT_ALLOWED) 581 return 0; 582 } 583 584 return 1; 585 } 586 587 588 int wpas_mbo_supp_op_class_ie(struct wpa_supplicant *wpa_s, int freq, u8 *pos, 589 size_t len) 590 { 591 struct wpabuf *buf; 592 u8 op, current, chan; 593 u8 *ie_len; 594 int res; 595 596 /* 597 * Assume 20 MHz channel for now. 598 * TODO: Use the secondary channel and VHT channel width that will be 599 * used after association. 600 */ 601 if (ieee80211_freq_to_channel_ext(freq, 0, VHT_CHANWIDTH_USE_HT, 602 ¤t, &chan) == NUM_HOSTAPD_MODES) 603 return 0; 604 605 /* 606 * Need 3 bytes for EID, length, and current operating class, plus 607 * 1 byte for every other supported operating class. 608 */ 609 buf = wpabuf_alloc(global_op_class_size + 3); 610 if (!buf) 611 return 0; 612 613 wpabuf_put_u8(buf, WLAN_EID_SUPPORTED_OPERATING_CLASSES); 614 /* Will set the length later, putting a placeholder */ 615 ie_len = wpabuf_put(buf, 1); 616 wpabuf_put_u8(buf, current); 617 618 for (op = 0; global_op_class[op].op_class; op++) { 619 if (wpas_op_class_supported(wpa_s, &global_op_class[op])) 620 wpabuf_put_u8(buf, global_op_class[op].op_class); 621 } 622 623 *ie_len = wpabuf_len(buf) - 2; 624 if (*ie_len < 2 || wpabuf_len(buf) > len) { 625 wpa_printf(MSG_ERROR, 626 "Failed to add supported operating classes IE"); 627 res = 0; 628 } else { 629 os_memcpy(pos, wpabuf_head(buf), wpabuf_len(buf)); 630 res = wpabuf_len(buf); 631 wpa_hexdump_buf(MSG_DEBUG, 632 "MBO: Added supported operating classes IE", 633 buf); 634 } 635 636 wpabuf_free(buf); 637 return res; 638 } 639 640 641 void wpas_mbo_ie_trans_req(struct wpa_supplicant *wpa_s, const u8 *mbo_ie, 642 size_t len) 643 { 644 const u8 *pos, *cell_pref = NULL, *reason = NULL; 645 u8 id, elen; 646 u16 disallowed_sec = 0; 647 648 if (len <= 4 || WPA_GET_BE24(mbo_ie) != OUI_WFA || 649 mbo_ie[3] != MBO_OUI_TYPE) 650 return; 651 652 pos = mbo_ie + 4; 653 len -= 4; 654 655 while (len >= 2) { 656 id = *pos++; 657 elen = *pos++; 658 len -= 2; 659 660 if (elen > len) 661 goto fail; 662 663 switch (id) { 664 case MBO_ATTR_ID_CELL_DATA_PREF: 665 if (elen != 1) 666 goto fail; 667 668 if (wpa_s->conf->mbo_cell_capa == 669 MBO_CELL_CAPA_AVAILABLE) 670 cell_pref = pos; 671 else 672 wpa_printf(MSG_DEBUG, 673 "MBO: Station does not support Cellular data connection"); 674 break; 675 case MBO_ATTR_ID_TRANSITION_REASON: 676 if (elen != 1) 677 goto fail; 678 679 reason = pos; 680 break; 681 case MBO_ATTR_ID_ASSOC_RETRY_DELAY: 682 if (elen != 2) 683 goto fail; 684 685 if (wpa_s->wnm_mode & 686 WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED) { 687 wpa_printf(MSG_DEBUG, 688 "MBO: Unexpected association retry delay, BSS is terminating"); 689 goto fail; 690 } else if (wpa_s->wnm_mode & 691 WNM_BSS_TM_REQ_DISASSOC_IMMINENT) { 692 disallowed_sec = WPA_GET_LE16(pos); 693 } else { 694 wpa_printf(MSG_DEBUG, 695 "MBO: Association retry delay attribute not in disassoc imminent mode"); 696 } 697 698 break; 699 case MBO_ATTR_ID_AP_CAPA_IND: 700 case MBO_ATTR_ID_NON_PREF_CHAN_REPORT: 701 case MBO_ATTR_ID_CELL_DATA_CAPA: 702 case MBO_ATTR_ID_ASSOC_DISALLOW: 703 case MBO_ATTR_ID_TRANSITION_REJECT_REASON: 704 wpa_printf(MSG_DEBUG, 705 "MBO: Attribute %d should not be included in BTM Request frame", 706 id); 707 break; 708 default: 709 wpa_printf(MSG_DEBUG, "MBO: Unknown attribute id %u", 710 id); 711 return; 712 } 713 714 pos += elen; 715 len -= elen; 716 } 717 718 if (cell_pref) 719 wpa_msg(wpa_s, MSG_INFO, MBO_CELL_PREFERENCE "preference=%u", 720 *cell_pref); 721 722 if (reason) 723 wpa_msg(wpa_s, MSG_INFO, MBO_TRANSITION_REASON "reason=%u", 724 *reason); 725 726 if (disallowed_sec && wpa_s->current_bss) 727 wpa_bss_tmp_disallow(wpa_s, wpa_s->current_bss->bssid, 728 disallowed_sec); 729 730 return; 731 fail: 732 wpa_printf(MSG_DEBUG, "MBO IE parsing failed (id=%u len=%u left=%zu)", 733 id, elen, len); 734 } 735 736 737 size_t wpas_mbo_ie_bss_trans_reject(struct wpa_supplicant *wpa_s, u8 *pos, 738 size_t len, 739 enum mbo_transition_reject_reason reason) 740 { 741 u8 reject_attr[3]; 742 743 reject_attr[0] = MBO_ATTR_ID_TRANSITION_REJECT_REASON; 744 reject_attr[1] = 1; 745 reject_attr[2] = reason; 746 747 return mbo_add_ie(pos, len, reject_attr, sizeof(reject_attr)); 748 } 749 750 751 void wpas_mbo_update_cell_capa(struct wpa_supplicant *wpa_s, u8 mbo_cell_capa) 752 { 753 u8 cell_capa[7]; 754 755 if (wpa_s->conf->mbo_cell_capa == mbo_cell_capa) { 756 wpa_printf(MSG_DEBUG, 757 "MBO: Cellular capability already set to %u", 758 mbo_cell_capa); 759 return; 760 } 761 762 wpa_s->conf->mbo_cell_capa = mbo_cell_capa; 763 764 cell_capa[0] = WLAN_EID_VENDOR_SPECIFIC; 765 cell_capa[1] = 5; /* Length */ 766 WPA_PUT_BE24(cell_capa + 2, OUI_WFA); 767 cell_capa[5] = MBO_ATTR_ID_CELL_DATA_CAPA; 768 cell_capa[6] = mbo_cell_capa; 769 770 wpas_mbo_send_wnm_notification(wpa_s, cell_capa, 7); 771 } 772
