1 /* 2 * Wi-Fi Direct - P2P provision discovery 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "common/ieee802_11_defs.h" 13 #include "common/wpa_ctrl.h" 14 #include "wps/wps_defs.h" 15 #include "p2p_i.h" 16 #include "p2p.h" 17 18 19 /* 20 * Number of retries to attempt for provision discovery requests 21 * in case the peer is not listening. 22 */ 23 #define MAX_PROV_DISC_REQ_RETRIES 120 24 25 26 static void p2p_build_wps_ie_config_methods(struct wpabuf *buf, 27 u16 config_methods) 28 { 29 u8 *len; 30 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); 31 len = wpabuf_put(buf, 1); 32 wpabuf_put_be32(buf, WPS_DEV_OUI_WFA); 33 34 /* Config Methods */ 35 wpabuf_put_be16(buf, ATTR_CONFIG_METHODS); 36 wpabuf_put_be16(buf, 2); 37 wpabuf_put_be16(buf, config_methods); 38 39 p2p_buf_update_ie_hdr(buf, len); 40 } 41 42 43 static void p2ps_add_new_group_info(struct p2p_data *p2p, 44 struct p2p_device *dev, 45 struct wpabuf *buf) 46 { 47 int found; 48 u8 intended_addr[ETH_ALEN]; 49 u8 ssid[SSID_MAX_LEN]; 50 size_t ssid_len; 51 int group_iface; 52 unsigned int force_freq; 53 54 if (!p2p->cfg->get_go_info) 55 return; 56 57 found = p2p->cfg->get_go_info( 58 p2p->cfg->cb_ctx, intended_addr, ssid, 59 &ssid_len, &group_iface, &force_freq); 60 if (found) { 61 if (force_freq > 0) { 62 p2p->p2ps_prov->force_freq = force_freq; 63 p2p->p2ps_prov->pref_freq = 0; 64 65 if (dev) 66 p2p_prepare_channel(p2p, dev, force_freq, 0, 0); 67 } 68 p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, 69 ssid, ssid_len); 70 71 if (group_iface) 72 p2p_buf_add_intended_addr(buf, p2p->intended_addr); 73 else 74 p2p_buf_add_intended_addr(buf, intended_addr); 75 } else { 76 if (!p2p->ssid_set) { 77 p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 78 p2p->ssid_set = 1; 79 } 80 81 /* Add pre-composed P2P Group ID */ 82 p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, 83 p2p->ssid, p2p->ssid_len); 84 85 if (group_iface) 86 p2p_buf_add_intended_addr( 87 buf, p2p->intended_addr); 88 else 89 p2p_buf_add_intended_addr( 90 buf, p2p->cfg->dev_addr); 91 } 92 } 93 94 95 static void p2ps_add_pd_req_attrs(struct p2p_data *p2p, struct p2p_device *dev, 96 struct wpabuf *buf, u16 config_methods) 97 { 98 struct p2ps_provision *prov = p2p->p2ps_prov; 99 struct p2ps_feature_capab fcap = { prov->cpt_mask, 0 }; 100 int shared_group = 0; 101 u8 ssid[SSID_MAX_LEN]; 102 size_t ssid_len; 103 u8 go_dev_addr[ETH_ALEN]; 104 u8 intended_addr[ETH_ALEN]; 105 int follow_on_req_fail = prov->status >= 0 && 106 prov->status != P2P_SC_SUCCESS_DEFERRED; 107 108 /* If we might be explicite group owner, add GO details */ 109 if (!follow_on_req_fail && 110 (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW))) 111 p2ps_add_new_group_info(p2p, dev, buf); 112 113 if (prov->status >= 0) 114 p2p_buf_add_status(buf, (u8) prov->status); 115 else 116 prov->method = config_methods; 117 118 if (!follow_on_req_fail) { 119 if (p2p->cfg->get_persistent_group) { 120 shared_group = p2p->cfg->get_persistent_group( 121 p2p->cfg->cb_ctx, dev->info.p2p_device_addr, 122 NULL, 0, go_dev_addr, ssid, &ssid_len, 123 intended_addr); 124 } 125 126 if (shared_group || 127 (prov->conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_NEW))) 128 p2p_buf_add_channel_list(buf, p2p->cfg->country, 129 &p2p->channels); 130 131 if ((shared_group && !is_zero_ether_addr(intended_addr)) || 132 (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW))) 133 p2p_buf_add_operating_channel(buf, p2p->cfg->country, 134 p2p->op_reg_class, 135 p2p->op_channel); 136 } 137 138 if (prov->status < 0 && prov->info[0]) 139 p2p_buf_add_session_info(buf, prov->info); 140 141 if (!follow_on_req_fail) 142 p2p_buf_add_connection_capability(buf, prov->conncap); 143 144 p2p_buf_add_advertisement_id(buf, prov->adv_id, prov->adv_mac); 145 146 if (!follow_on_req_fail) { 147 if (shared_group || prov->conncap == P2PS_SETUP_NEW || 148 prov->conncap == 149 (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW) || 150 prov->conncap == 151 (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT)) { 152 /* Add Config Timeout */ 153 p2p_buf_add_config_timeout(buf, p2p->go_timeout, 154 p2p->client_timeout); 155 } 156 157 p2p_buf_add_listen_channel(buf, p2p->cfg->country, 158 p2p->cfg->reg_class, 159 p2p->cfg->channel); 160 } 161 162 p2p_buf_add_session_id(buf, prov->session_id, prov->session_mac); 163 164 p2p_buf_add_feature_capability(buf, sizeof(fcap), (const u8 *) &fcap); 165 166 if (shared_group) { 167 p2p_buf_add_persistent_group_info(buf, go_dev_addr, 168 ssid, ssid_len); 169 /* Add intended interface address if it is not added yet */ 170 if ((prov->conncap == P2PS_SETUP_NONE || 171 prov->conncap == P2PS_SETUP_CLIENT) && 172 !is_zero_ether_addr(intended_addr)) 173 p2p_buf_add_intended_addr(buf, intended_addr); 174 } 175 } 176 177 178 static struct wpabuf * p2p_build_prov_disc_req(struct p2p_data *p2p, 179 struct p2p_device *dev, 180 int join) 181 { 182 struct wpabuf *buf; 183 u8 *len; 184 size_t extra = 0; 185 u8 dialog_token = dev->dialog_token; 186 u16 config_methods = dev->req_config_methods; 187 struct p2p_device *go = join ? dev : NULL; 188 u8 group_capab; 189 190 #ifdef CONFIG_WIFI_DISPLAY 191 if (p2p->wfd_ie_prov_disc_req) 192 extra = wpabuf_len(p2p->wfd_ie_prov_disc_req); 193 #endif /* CONFIG_WIFI_DISPLAY */ 194 195 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]) 196 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]); 197 198 if (p2p->p2ps_prov) 199 extra += os_strlen(p2p->p2ps_prov->info) + 1 + 200 sizeof(struct p2ps_provision); 201 202 buf = wpabuf_alloc(1000 + extra); 203 if (buf == NULL) 204 return NULL; 205 206 p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_REQ, dialog_token); 207 208 len = p2p_buf_add_ie_hdr(buf); 209 210 group_capab = 0; 211 if (p2p->p2ps_prov) { 212 group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 213 group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 214 if (p2p->cross_connect) 215 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 216 if (p2p->cfg->p2p_intra_bss) 217 group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 218 } 219 p2p_buf_add_capability(buf, p2p->dev_capab & 220 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 221 group_capab); 222 p2p_buf_add_device_info(buf, p2p, NULL); 223 if (p2p->p2ps_prov) { 224 p2ps_add_pd_req_attrs(p2p, dev, buf, config_methods); 225 } else if (go) { 226 p2p_buf_add_group_id(buf, go->info.p2p_device_addr, 227 go->oper_ssid, go->oper_ssid_len); 228 } 229 p2p_buf_update_ie_hdr(buf, len); 230 231 /* WPS IE with Config Methods attribute */ 232 p2p_build_wps_ie_config_methods(buf, config_methods); 233 234 #ifdef CONFIG_WIFI_DISPLAY 235 if (p2p->wfd_ie_prov_disc_req) 236 wpabuf_put_buf(buf, p2p->wfd_ie_prov_disc_req); 237 #endif /* CONFIG_WIFI_DISPLAY */ 238 239 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]) 240 wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]); 241 242 return buf; 243 } 244 245 246 static struct wpabuf * p2p_build_prov_disc_resp(struct p2p_data *p2p, 247 struct p2p_device *dev, 248 u8 dialog_token, 249 enum p2p_status_code status, 250 u16 config_methods, 251 u32 adv_id, 252 const u8 *group_id, 253 size_t group_id_len, 254 const u8 *persist_ssid, 255 size_t persist_ssid_len, 256 const u8 *fcap, 257 u16 fcap_len) 258 { 259 struct wpabuf *buf; 260 size_t extra = 0; 261 int persist = 0; 262 263 #ifdef CONFIG_WIFI_DISPLAY 264 struct wpabuf *wfd_ie = p2p->wfd_ie_prov_disc_resp; 265 if (wfd_ie && group_id) { 266 size_t i; 267 for (i = 0; i < p2p->num_groups; i++) { 268 struct p2p_group *g = p2p->groups[i]; 269 struct wpabuf *ie; 270 if (!p2p_group_is_group_id_match(g, group_id, 271 group_id_len)) 272 continue; 273 ie = p2p_group_get_wfd_ie(g); 274 if (ie) { 275 wfd_ie = ie; 276 break; 277 } 278 } 279 } 280 if (wfd_ie) 281 extra = wpabuf_len(wfd_ie); 282 #endif /* CONFIG_WIFI_DISPLAY */ 283 284 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]) 285 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]); 286 287 buf = wpabuf_alloc(1000 + extra); 288 if (buf == NULL) 289 return NULL; 290 291 p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_RESP, dialog_token); 292 293 /* Add P2P IE for P2PS */ 294 if (p2p->p2ps_prov && p2p->p2ps_prov->adv_id == adv_id) { 295 u8 *len = p2p_buf_add_ie_hdr(buf); 296 struct p2ps_provision *prov = p2p->p2ps_prov; 297 u8 group_capab; 298 u8 conncap = 0; 299 300 if (status == P2P_SC_SUCCESS || 301 status == P2P_SC_SUCCESS_DEFERRED) 302 conncap = prov->conncap; 303 304 if (!status && prov->status != -1) 305 status = prov->status; 306 307 p2p_buf_add_status(buf, status); 308 group_capab = P2P_GROUP_CAPAB_PERSISTENT_GROUP | 309 P2P_GROUP_CAPAB_PERSISTENT_RECONN; 310 if (p2p->cross_connect) 311 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 312 if (p2p->cfg->p2p_intra_bss) 313 group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 314 p2p_buf_add_capability(buf, p2p->dev_capab & 315 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 316 group_capab); 317 p2p_buf_add_device_info(buf, p2p, NULL); 318 319 if (persist_ssid && p2p->cfg->get_persistent_group && dev && 320 (status == P2P_SC_SUCCESS || 321 status == P2P_SC_SUCCESS_DEFERRED)) { 322 u8 ssid[SSID_MAX_LEN]; 323 size_t ssid_len; 324 u8 go_dev_addr[ETH_ALEN]; 325 u8 intended_addr[ETH_ALEN]; 326 327 persist = p2p->cfg->get_persistent_group( 328 p2p->cfg->cb_ctx, 329 dev->info.p2p_device_addr, 330 persist_ssid, persist_ssid_len, go_dev_addr, 331 ssid, &ssid_len, intended_addr); 332 if (persist) { 333 p2p_buf_add_persistent_group_info( 334 buf, go_dev_addr, ssid, ssid_len); 335 if (!is_zero_ether_addr(intended_addr)) 336 p2p_buf_add_intended_addr( 337 buf, intended_addr); 338 } 339 } 340 341 if (!persist && (conncap & P2PS_SETUP_GROUP_OWNER)) 342 p2ps_add_new_group_info(p2p, dev, buf); 343 344 /* Add Operating Channel if conncap indicates GO */ 345 if (persist || (conncap & P2PS_SETUP_GROUP_OWNER)) { 346 if (p2p->op_reg_class && p2p->op_channel) 347 p2p_buf_add_operating_channel( 348 buf, p2p->cfg->country, 349 p2p->op_reg_class, 350 p2p->op_channel); 351 else 352 p2p_buf_add_operating_channel( 353 buf, p2p->cfg->country, 354 p2p->cfg->op_reg_class, 355 p2p->cfg->op_channel); 356 } 357 358 if (persist || 359 (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER))) 360 p2p_buf_add_channel_list(buf, p2p->cfg->country, 361 &p2p->channels); 362 363 if (!persist && conncap) 364 p2p_buf_add_connection_capability(buf, conncap); 365 366 p2p_buf_add_advertisement_id(buf, adv_id, prov->adv_mac); 367 368 if (persist || 369 (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER))) 370 p2p_buf_add_config_timeout(buf, p2p->go_timeout, 371 p2p->client_timeout); 372 373 p2p_buf_add_session_id(buf, prov->session_id, 374 prov->session_mac); 375 376 p2p_buf_add_feature_capability(buf, fcap_len, fcap); 377 p2p_buf_update_ie_hdr(buf, len); 378 } else if (status != P2P_SC_SUCCESS || adv_id) { 379 u8 *len = p2p_buf_add_ie_hdr(buf); 380 381 p2p_buf_add_status(buf, status); 382 383 if (p2p->p2ps_prov) 384 p2p_buf_add_advertisement_id(buf, adv_id, 385 p2p->p2ps_prov->adv_mac); 386 387 p2p_buf_update_ie_hdr(buf, len); 388 } 389 390 /* WPS IE with Config Methods attribute */ 391 p2p_build_wps_ie_config_methods(buf, config_methods); 392 393 #ifdef CONFIG_WIFI_DISPLAY 394 if (wfd_ie) 395 wpabuf_put_buf(buf, wfd_ie); 396 #endif /* CONFIG_WIFI_DISPLAY */ 397 398 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]) 399 wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]); 400 401 return buf; 402 } 403 404 405 static int p2ps_setup_p2ps_prov(struct p2p_data *p2p, u32 adv_id, 406 u32 session_id, u16 method, 407 const u8 *session_mac, const u8 *adv_mac) 408 { 409 struct p2ps_provision *tmp; 410 411 if (!p2p->p2ps_prov) { 412 p2p->p2ps_prov = os_zalloc(sizeof(struct p2ps_provision) + 1); 413 if (!p2p->p2ps_prov) 414 return -1; 415 } else { 416 os_memset(p2p->p2ps_prov, 0, sizeof(struct p2ps_provision) + 1); 417 } 418 419 tmp = p2p->p2ps_prov; 420 tmp->adv_id = adv_id; 421 tmp->session_id = session_id; 422 tmp->method = method; 423 os_memcpy(tmp->session_mac, session_mac, ETH_ALEN); 424 os_memcpy(tmp->adv_mac, adv_mac, ETH_ALEN); 425 tmp->info[0] = '\0'; 426 427 return 0; 428 } 429 430 431 static u8 p2ps_own_preferred_cpt(const u8 *cpt_priority, u8 req_cpt_mask) 432 { 433 int i; 434 435 for (i = 0; cpt_priority[i]; i++) 436 if (req_cpt_mask & cpt_priority[i]) 437 return cpt_priority[i]; 438 439 return 0; 440 } 441 442 443 /* Check if the message contains a valid P2PS PD Request */ 444 static int p2ps_validate_pd_req(struct p2p_data *p2p, struct p2p_message *msg, 445 const u8 *addr) 446 { 447 u8 group_id = 0; 448 u8 intended_addr = 0; 449 u8 operating_channel = 0; 450 u8 channel_list = 0; 451 u8 config_timeout = 0; 452 u8 listen_channel = 0; 453 454 #define P2PS_PD_REQ_CHECK(_val, _attr) \ 455 do { \ 456 if ((_val) && !msg->_attr) { \ 457 p2p_dbg(p2p, "Not P2PS PD Request. Missing %s", #_attr); \ 458 return -1; \ 459 } \ 460 } while (0) 461 462 P2PS_PD_REQ_CHECK(1, adv_id); 463 P2PS_PD_REQ_CHECK(1, session_id); 464 P2PS_PD_REQ_CHECK(1, session_mac); 465 P2PS_PD_REQ_CHECK(1, adv_mac); 466 P2PS_PD_REQ_CHECK(1, capability); 467 P2PS_PD_REQ_CHECK(1, p2p_device_info); 468 P2PS_PD_REQ_CHECK(1, feature_cap); 469 470 /* 471 * We don't need to check Connection Capability, Persistent Group, 472 * and related attributes for follow-on PD Request with a status 473 * other than SUCCESS_DEFERRED. 474 */ 475 if (msg->status && *msg->status != P2P_SC_SUCCESS_DEFERRED) 476 return 0; 477 478 P2PS_PD_REQ_CHECK(1, conn_cap); 479 480 /* 481 * Note 1: A feature capability attribute structure can be changed 482 * in the future. The assumption is that such modifications are 483 * backward compatible, therefore we allow processing of msg.feature_cap 484 * exceeding the size of the p2ps_feature_capab structure. 485 * Note 2: Verification of msg.feature_cap_len below has to be changed 486 * to allow 2 byte feature capability processing if 487 * struct p2ps_feature_capab is extended to include additional fields 488 * and it affects the structure size. 489 */ 490 if (msg->feature_cap_len < sizeof(struct p2ps_feature_capab)) { 491 p2p_dbg(p2p, "P2PS: Invalid feature capability len"); 492 return -1; 493 } 494 495 switch (*msg->conn_cap) { 496 case P2PS_SETUP_NEW: 497 group_id = 1; 498 intended_addr = 1; 499 operating_channel = 1; 500 channel_list = 1; 501 config_timeout = 1; 502 listen_channel = 1; 503 break; 504 case P2PS_SETUP_CLIENT: 505 channel_list = 1; 506 listen_channel = 1; 507 break; 508 case P2PS_SETUP_GROUP_OWNER: 509 group_id = 1; 510 intended_addr = 1; 511 operating_channel = 1; 512 break; 513 case P2PS_SETUP_NEW | P2PS_SETUP_GROUP_OWNER: 514 group_id = 1; 515 operating_channel = 1; 516 intended_addr = 1; 517 channel_list = 1; 518 config_timeout = 1; 519 break; 520 case P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER: 521 group_id = 1; 522 intended_addr = 1; 523 operating_channel = 1; 524 channel_list = 1; 525 config_timeout = 1; 526 break; 527 default: 528 p2p_dbg(p2p, "Invalid P2PS PD connection capability"); 529 return -1; 530 } 531 532 if (msg->persistent_dev) { 533 channel_list = 1; 534 config_timeout = 1; 535 if (os_memcmp(msg->persistent_dev, addr, ETH_ALEN) == 0) { 536 intended_addr = 1; 537 operating_channel = 1; 538 } 539 } 540 541 P2PS_PD_REQ_CHECK(group_id, group_id); 542 P2PS_PD_REQ_CHECK(intended_addr, intended_addr); 543 P2PS_PD_REQ_CHECK(operating_channel, operating_channel); 544 P2PS_PD_REQ_CHECK(channel_list, channel_list); 545 P2PS_PD_REQ_CHECK(config_timeout, config_timeout); 546 P2PS_PD_REQ_CHECK(listen_channel, listen_channel); 547 548 #undef P2PS_PD_REQ_CHECK 549 550 return 0; 551 } 552 553 554 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa, 555 const u8 *data, size_t len, int rx_freq) 556 { 557 struct p2p_message msg; 558 struct p2p_device *dev; 559 int freq; 560 enum p2p_status_code reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 561 struct wpabuf *resp; 562 u32 adv_id = 0; 563 struct p2ps_advertisement *p2ps_adv = NULL; 564 u8 conncap = P2PS_SETUP_NEW; 565 u8 auto_accept = 0; 566 u32 session_id = 0; 567 u8 session_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; 568 u8 adv_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; 569 const u8 *group_mac; 570 int passwd_id = DEV_PW_DEFAULT; 571 u16 config_methods; 572 u16 allowed_config_methods = WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD; 573 struct p2ps_feature_capab resp_fcap = { 0, 0 }; 574 struct p2ps_feature_capab *req_fcap = NULL; 575 u8 remote_conncap; 576 u16 method; 577 578 if (p2p_parse(data, len, &msg)) 579 return; 580 581 p2p_dbg(p2p, "Received Provision Discovery Request from " MACSTR 582 " with config methods 0x%x (freq=%d)", 583 MAC2STR(sa), msg.wps_config_methods, rx_freq); 584 group_mac = msg.intended_addr; 585 586 dev = p2p_get_device(p2p, sa); 587 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 588 p2p_dbg(p2p, "Provision Discovery Request from unknown peer " 589 MACSTR, MAC2STR(sa)); 590 591 if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1, 592 0)) { 593 p2p_dbg(p2p, "Provision Discovery Request add device failed " 594 MACSTR, MAC2STR(sa)); 595 goto out; 596 } 597 598 dev = p2p_get_device(p2p, sa); 599 if (!dev) { 600 p2p_dbg(p2p, 601 "Provision Discovery device not found " 602 MACSTR, MAC2STR(sa)); 603 goto out; 604 } 605 } else if (msg.wfd_subelems) { 606 wpabuf_free(dev->info.wfd_subelems); 607 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 608 } 609 610 if (!msg.adv_id) { 611 allowed_config_methods |= WPS_CONFIG_PUSHBUTTON; 612 if (!(msg.wps_config_methods & allowed_config_methods)) { 613 p2p_dbg(p2p, 614 "Unsupported Config Methods in Provision Discovery Request"); 615 goto out; 616 } 617 618 /* Legacy (non-P2PS) - Unknown groups allowed for P2PS */ 619 if (msg.group_id) { 620 size_t i; 621 622 for (i = 0; i < p2p->num_groups; i++) { 623 if (p2p_group_is_group_id_match( 624 p2p->groups[i], 625 msg.group_id, msg.group_id_len)) 626 break; 627 } 628 if (i == p2p->num_groups) { 629 p2p_dbg(p2p, 630 "PD request for unknown P2P Group ID - reject"); 631 goto out; 632 } 633 } 634 } else { 635 allowed_config_methods |= WPS_CONFIG_P2PS; 636 637 /* 638 * Set adv_id here, so in case of an error, a P2PS PD Response 639 * will be sent. 640 */ 641 adv_id = WPA_GET_LE32(msg.adv_id); 642 if (p2ps_validate_pd_req(p2p, &msg, sa) < 0) { 643 reject = P2P_SC_FAIL_INVALID_PARAMS; 644 goto out; 645 } 646 647 req_fcap = (struct p2ps_feature_capab *) msg.feature_cap; 648 649 os_memcpy(session_mac, msg.session_mac, ETH_ALEN); 650 os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); 651 652 session_id = WPA_GET_LE32(msg.session_id); 653 654 if (msg.conn_cap) 655 conncap = *msg.conn_cap; 656 657 /* 658 * We need to verify a P2PS config methog in an initial PD 659 * request or in a follow-on PD request with the status 660 * SUCCESS_DEFERRED. 661 */ 662 if ((!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) && 663 !(msg.wps_config_methods & allowed_config_methods)) { 664 p2p_dbg(p2p, 665 "Unsupported Config Methods in Provision Discovery Request"); 666 goto out; 667 } 668 669 /* 670 * TODO: since we don't support multiple PD, reject PD request 671 * if we are in the middle of P2PS PD with some other peer 672 */ 673 } 674 675 dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | 676 P2P_DEV_PD_PEER_KEYPAD | 677 P2P_DEV_PD_PEER_P2PS); 678 679 if (msg.wps_config_methods & WPS_CONFIG_DISPLAY) { 680 p2p_dbg(p2p, "Peer " MACSTR 681 " requested us to show a PIN on display", MAC2STR(sa)); 682 dev->flags |= P2P_DEV_PD_PEER_KEYPAD; 683 passwd_id = DEV_PW_USER_SPECIFIED; 684 } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { 685 p2p_dbg(p2p, "Peer " MACSTR 686 " requested us to write its PIN using keypad", 687 MAC2STR(sa)); 688 dev->flags |= P2P_DEV_PD_PEER_DISPLAY; 689 passwd_id = DEV_PW_REGISTRAR_SPECIFIED; 690 } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { 691 p2p_dbg(p2p, "Peer " MACSTR " requesting P2PS PIN", 692 MAC2STR(sa)); 693 dev->flags |= P2P_DEV_PD_PEER_P2PS; 694 passwd_id = DEV_PW_P2PS_DEFAULT; 695 } 696 697 /* Remove stale persistent groups */ 698 if (p2p->cfg->remove_stale_groups) { 699 p2p->cfg->remove_stale_groups( 700 p2p->cfg->cb_ctx, dev->info.p2p_device_addr, 701 msg.persistent_dev, 702 msg.persistent_ssid, msg.persistent_ssid_len); 703 } 704 705 reject = P2P_SC_SUCCESS; 706 707 /* 708 * End of a legacy P2P PD Request processing, from this point continue 709 * with P2PS one. 710 */ 711 if (!msg.adv_id) 712 goto out; 713 714 remote_conncap = conncap; 715 716 if (!msg.status) { 717 unsigned int forced_freq, pref_freq; 718 719 if (os_memcmp(p2p->cfg->dev_addr, msg.adv_mac, ETH_ALEN)) { 720 p2p_dbg(p2p, 721 "P2PS PD adv mac does not match the local one"); 722 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 723 goto out; 724 } 725 726 p2ps_adv = p2p_service_p2ps_id(p2p, adv_id); 727 if (!p2ps_adv) { 728 p2p_dbg(p2p, "P2PS PD invalid adv_id=0x%X", adv_id); 729 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 730 goto out; 731 } 732 p2p_dbg(p2p, "adv_id: 0x%X, p2ps_adv: %p", adv_id, p2ps_adv); 733 734 auto_accept = p2ps_adv->auto_accept; 735 conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, 736 conncap, auto_accept, 737 &forced_freq, 738 &pref_freq); 739 740 p2p_dbg(p2p, "Conncap: local:%d remote:%d result:%d", 741 auto_accept, remote_conncap, conncap); 742 743 p2p_prepare_channel(p2p, dev, forced_freq, pref_freq, 0); 744 745 resp_fcap.cpt = p2ps_own_preferred_cpt(p2ps_adv->cpt_priority, 746 req_fcap->cpt); 747 748 p2p_dbg(p2p, "cpt: service:0x%x remote:0x%x result:0x%x", 749 p2ps_adv->cpt_mask, req_fcap->cpt, resp_fcap.cpt); 750 751 if (!resp_fcap.cpt) { 752 p2p_dbg(p2p, 753 "Incompatible P2PS feature capability CPT bitmask"); 754 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 755 } else if (p2ps_adv->config_methods && 756 !(msg.wps_config_methods & 757 p2ps_adv->config_methods)) { 758 p2p_dbg(p2p, 759 "Unsupported config methods in Provision Discovery Request (own=0x%x peer=0x%x)", 760 p2ps_adv->config_methods, 761 msg.wps_config_methods); 762 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 763 } else if (!p2ps_adv->state) { 764 p2p_dbg(p2p, "P2PS state unavailable"); 765 reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 766 } else if (!conncap) { 767 p2p_dbg(p2p, "Conncap resolution failed"); 768 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 769 } 770 771 if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { 772 p2p_dbg(p2p, "Keypad - always defer"); 773 auto_accept = 0; 774 } 775 776 if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || 777 msg.persistent_dev) && conncap != P2PS_SETUP_NEW && 778 msg.channel_list && msg.channel_list_len && 779 p2p_peer_channels_check(p2p, &p2p->channels, dev, 780 msg.channel_list, 781 msg.channel_list_len) < 0) { 782 p2p_dbg(p2p, 783 "No common channels - force deferred flow"); 784 auto_accept = 0; 785 } 786 787 if (((remote_conncap & P2PS_SETUP_GROUP_OWNER) || 788 msg.persistent_dev) && msg.operating_channel) { 789 struct p2p_channels intersect; 790 791 /* 792 * There are cases where only the operating channel is 793 * provided. This requires saving the channel as the 794 * supported channel list, and verifying that it is 795 * supported. 796 */ 797 if (dev->channels.reg_classes == 0 || 798 !p2p_channels_includes(&dev->channels, 799 msg.operating_channel[3], 800 msg.operating_channel[4])) { 801 struct p2p_channels *ch = &dev->channels; 802 803 os_memset(ch, 0, sizeof(*ch)); 804 ch->reg_class[0].reg_class = 805 msg.operating_channel[3]; 806 ch->reg_class[0].channel[0] = 807 msg.operating_channel[4]; 808 ch->reg_class[0].channels = 1; 809 ch->reg_classes = 1; 810 } 811 812 p2p_channels_intersect(&p2p->channels, &dev->channels, 813 &intersect); 814 815 if (intersect.reg_classes == 0) { 816 p2p_dbg(p2p, 817 "No common channels - force deferred flow"); 818 auto_accept = 0; 819 } 820 } 821 822 if (auto_accept || reject != P2P_SC_SUCCESS) { 823 struct p2ps_provision *tmp; 824 825 if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, 826 msg.wps_config_methods, 827 session_mac, adv_mac) < 0) { 828 reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 829 goto out; 830 } 831 832 tmp = p2p->p2ps_prov; 833 tmp->force_freq = forced_freq; 834 tmp->pref_freq = pref_freq; 835 if (conncap) { 836 tmp->conncap = conncap; 837 tmp->status = P2P_SC_SUCCESS; 838 } else { 839 tmp->conncap = auto_accept; 840 tmp->status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 841 } 842 843 if (reject != P2P_SC_SUCCESS) 844 goto out; 845 } 846 } 847 848 if (!msg.status && !auto_accept && 849 (!p2p->p2ps_prov || p2p->p2ps_prov->adv_id != adv_id)) { 850 struct p2ps_provision *tmp; 851 852 if (!conncap) { 853 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 854 goto out; 855 } 856 857 if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, 858 msg.wps_config_methods, 859 session_mac, adv_mac) < 0) { 860 reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 861 goto out; 862 } 863 tmp = p2p->p2ps_prov; 864 reject = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 865 tmp->status = reject; 866 } 867 868 /* Not a P2PS Follow-on PD */ 869 if (!msg.status) 870 goto out; 871 872 if (*msg.status && *msg.status != P2P_SC_SUCCESS_DEFERRED) { 873 reject = *msg.status; 874 goto out; 875 } 876 877 if (*msg.status != P2P_SC_SUCCESS_DEFERRED || !p2p->p2ps_prov) 878 goto out; 879 880 if (p2p->p2ps_prov->adv_id != adv_id || 881 os_memcmp(p2p->p2ps_prov->adv_mac, msg.adv_mac, ETH_ALEN)) { 882 p2p_dbg(p2p, 883 "P2PS Follow-on PD with mismatch Advertisement ID/MAC"); 884 goto out; 885 } 886 887 if (p2p->p2ps_prov->session_id != session_id || 888 os_memcmp(p2p->p2ps_prov->session_mac, msg.session_mac, ETH_ALEN)) { 889 p2p_dbg(p2p, "P2PS Follow-on PD with mismatch Session ID/MAC"); 890 goto out; 891 } 892 893 method = p2p->p2ps_prov->method; 894 895 conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, 896 remote_conncap, 897 p2p->p2ps_prov->conncap, 898 &p2p->p2ps_prov->force_freq, 899 &p2p->p2ps_prov->pref_freq); 900 901 resp_fcap.cpt = p2ps_own_preferred_cpt(p2p->p2ps_prov->cpt_priority, 902 req_fcap->cpt); 903 904 p2p_dbg(p2p, "cpt: local:0x%x remote:0x%x result:0x%x", 905 p2p->p2ps_prov->cpt_mask, req_fcap->cpt, resp_fcap.cpt); 906 907 p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, 908 p2p->p2ps_prov->pref_freq, 0); 909 910 /* 911 * Ensure that if we asked for PIN originally, our method is consistent 912 * with original request. 913 */ 914 if (method & WPS_CONFIG_DISPLAY) 915 method = WPS_CONFIG_KEYPAD; 916 else if (method & WPS_CONFIG_KEYPAD) 917 method = WPS_CONFIG_DISPLAY; 918 919 if (!conncap || !(msg.wps_config_methods & method)) { 920 /* 921 * Reject this "Deferred Accept* 922 * if incompatible conncap or method 923 */ 924 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 925 } else if (!resp_fcap.cpt) { 926 p2p_dbg(p2p, 927 "Incompatible P2PS feature capability CPT bitmask"); 928 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 929 } else if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || 930 msg.persistent_dev) && conncap != P2PS_SETUP_NEW && 931 msg.channel_list && msg.channel_list_len && 932 p2p_peer_channels_check(p2p, &p2p->channels, dev, 933 msg.channel_list, 934 msg.channel_list_len) < 0) { 935 p2p_dbg(p2p, 936 "No common channels in Follow-On Provision Discovery Request"); 937 reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; 938 } else { 939 reject = P2P_SC_SUCCESS; 940 } 941 942 dev->oper_freq = 0; 943 if (reject == P2P_SC_SUCCESS || reject == P2P_SC_SUCCESS_DEFERRED) { 944 u8 tmp; 945 946 if (msg.operating_channel) 947 dev->oper_freq = 948 p2p_channel_to_freq(msg.operating_channel[3], 949 msg.operating_channel[4]); 950 951 if ((conncap & P2PS_SETUP_GROUP_OWNER) && 952 p2p_go_select_channel(p2p, dev, &tmp) < 0) 953 reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; 954 } 955 956 p2p->p2ps_prov->status = reject; 957 p2p->p2ps_prov->conncap = conncap; 958 959 out: 960 if (reject == P2P_SC_SUCCESS || 961 reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 962 config_methods = msg.wps_config_methods; 963 else 964 config_methods = 0; 965 966 /* 967 * Send PD Response for an initial PD Request or for follow-on 968 * PD Request with P2P_SC_SUCCESS_DEFERRED status. 969 */ 970 if (!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) { 971 resp = p2p_build_prov_disc_resp(p2p, dev, msg.dialog_token, 972 reject, config_methods, adv_id, 973 msg.group_id, msg.group_id_len, 974 msg.persistent_ssid, 975 msg.persistent_ssid_len, 976 (const u8 *) &resp_fcap, 977 sizeof(resp_fcap)); 978 if (!resp) { 979 p2p_parse_free(&msg); 980 return; 981 } 982 p2p_dbg(p2p, "Sending Provision Discovery Response"); 983 if (rx_freq > 0) 984 freq = rx_freq; 985 else 986 freq = p2p_channel_to_freq(p2p->cfg->reg_class, 987 p2p->cfg->channel); 988 if (freq < 0) { 989 p2p_dbg(p2p, "Unknown regulatory class/channel"); 990 wpabuf_free(resp); 991 p2p_parse_free(&msg); 992 return; 993 } 994 p2p->pending_action_state = P2P_PENDING_PD_RESPONSE; 995 if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 996 p2p->cfg->dev_addr, 997 wpabuf_head(resp), wpabuf_len(resp), 998 50) < 0) 999 p2p_dbg(p2p, "Failed to send Action frame"); 1000 else 1001 p2p->send_action_in_progress = 1; 1002 1003 wpabuf_free(resp); 1004 } 1005 1006 if (!dev) { 1007 p2p_parse_free(&msg); 1008 return; 1009 } 1010 1011 freq = 0; 1012 if (reject == P2P_SC_SUCCESS && conncap == P2PS_SETUP_GROUP_OWNER) { 1013 freq = p2p_channel_to_freq(p2p->op_reg_class, 1014 p2p->op_channel); 1015 if (freq < 0) 1016 freq = 0; 1017 } 1018 1019 if (!p2p->cfg->p2ps_prov_complete) { 1020 /* Don't emit anything */ 1021 } else if (msg.status && *msg.status != P2P_SC_SUCCESS && 1022 *msg.status != P2P_SC_SUCCESS_DEFERRED) { 1023 reject = *msg.status; 1024 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, 1025 sa, adv_mac, session_mac, 1026 NULL, adv_id, session_id, 1027 0, 0, msg.persistent_ssid, 1028 msg.persistent_ssid_len, 1029 0, 0, NULL, NULL, 0, freq, 1030 NULL, 0); 1031 } else if (msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && 1032 p2p->p2ps_prov) { 1033 p2p->p2ps_prov->status = reject; 1034 p2p->p2ps_prov->conncap = conncap; 1035 1036 if (reject != P2P_SC_SUCCESS) 1037 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, 1038 sa, adv_mac, session_mac, 1039 NULL, adv_id, 1040 session_id, conncap, 0, 1041 msg.persistent_ssid, 1042 msg.persistent_ssid_len, 0, 1043 0, NULL, NULL, 0, freq, 1044 NULL, 0); 1045 else 1046 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, 1047 *msg.status, 1048 sa, adv_mac, session_mac, 1049 group_mac, adv_id, 1050 session_id, conncap, 1051 passwd_id, 1052 msg.persistent_ssid, 1053 msg.persistent_ssid_len, 0, 1054 0, NULL, 1055 (const u8 *) &resp_fcap, 1056 sizeof(resp_fcap), freq, 1057 NULL, 0); 1058 } else if (msg.status && p2p->p2ps_prov) { 1059 p2p->p2ps_prov->status = P2P_SC_SUCCESS; 1060 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, *msg.status, sa, 1061 adv_mac, session_mac, group_mac, 1062 adv_id, session_id, conncap, 1063 passwd_id, 1064 msg.persistent_ssid, 1065 msg.persistent_ssid_len, 1066 0, 0, NULL, 1067 (const u8 *) &resp_fcap, 1068 sizeof(resp_fcap), freq, NULL, 0); 1069 } else if (msg.status) { 1070 } else if (auto_accept && reject == P2P_SC_SUCCESS) { 1071 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, 1072 sa, adv_mac, session_mac, 1073 group_mac, adv_id, session_id, 1074 conncap, passwd_id, 1075 msg.persistent_ssid, 1076 msg.persistent_ssid_len, 1077 0, 0, NULL, 1078 (const u8 *) &resp_fcap, 1079 sizeof(resp_fcap), freq, 1080 msg.group_id ? 1081 msg.group_id + ETH_ALEN : NULL, 1082 msg.group_id ? 1083 msg.group_id_len - ETH_ALEN : 0); 1084 } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1085 (!msg.session_info || !msg.session_info_len)) { 1086 p2p->p2ps_prov->method = msg.wps_config_methods; 1087 1088 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, 1089 sa, adv_mac, session_mac, 1090 group_mac, adv_id, session_id, 1091 conncap, passwd_id, 1092 msg.persistent_ssid, 1093 msg.persistent_ssid_len, 1094 0, 1, NULL, 1095 (const u8 *) &resp_fcap, 1096 sizeof(resp_fcap), freq, NULL, 0); 1097 } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 1098 size_t buf_len = msg.session_info_len; 1099 char *buf = os_malloc(2 * buf_len + 1); 1100 1101 if (buf) { 1102 p2p->p2ps_prov->method = msg.wps_config_methods; 1103 1104 utf8_escape((char *) msg.session_info, buf_len, 1105 buf, 2 * buf_len + 1); 1106 1107 p2p->cfg->p2ps_prov_complete( 1108 p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa, 1109 adv_mac, session_mac, group_mac, adv_id, 1110 session_id, conncap, passwd_id, 1111 msg.persistent_ssid, msg.persistent_ssid_len, 1112 0, 1, buf, 1113 (const u8 *) &resp_fcap, sizeof(resp_fcap), 1114 freq, NULL, 0); 1115 1116 os_free(buf); 1117 } 1118 } 1119 1120 /* 1121 * prov_disc_req callback is used to generate P2P-PROV-DISC-ENTER-PIN, 1122 * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. 1123 * Call it either on legacy P2P PD or on P2PS PD only if we need to 1124 * enter/show PIN. 1125 * 1126 * The callback is called in the following cases: 1127 * 1. Legacy P2P PD request, response status SUCCESS 1128 * 2. P2PS advertiser, method: DISPLAY, autoaccept: TRUE, 1129 * response status: SUCCESS 1130 * 3. P2PS advertiser, method DISPLAY, autoaccept: FALSE, 1131 * response status: INFO_CURRENTLY_UNAVAILABLE 1132 * 4. P2PS advertiser, method: KEYPAD, autoaccept==any, 1133 * response status: INFO_CURRENTLY_UNAVAILABLE 1134 * 5. P2PS follow-on with SUCCESS_DEFERRED, 1135 * advertiser role: DISPLAY, autoaccept: FALSE, 1136 * seeker: KEYPAD, response status: SUCCESS 1137 */ 1138 if (p2p->cfg->prov_disc_req && 1139 ((reject == P2P_SC_SUCCESS && !msg.adv_id) || 1140 (!msg.status && 1141 (reject == P2P_SC_SUCCESS || 1142 reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) && 1143 passwd_id == DEV_PW_USER_SPECIFIED) || 1144 (!msg.status && 1145 reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1146 passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || 1147 (reject == P2P_SC_SUCCESS && 1148 msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && 1149 passwd_id == DEV_PW_REGISTRAR_SPECIFIED))) { 1150 const u8 *dev_addr = sa; 1151 1152 if (msg.p2p_device_addr) 1153 dev_addr = msg.p2p_device_addr; 1154 p2p->cfg->prov_disc_req(p2p->cfg->cb_ctx, sa, 1155 msg.wps_config_methods, 1156 dev_addr, msg.pri_dev_type, 1157 msg.device_name, msg.config_methods, 1158 msg.capability ? msg.capability[0] : 0, 1159 msg.capability ? msg.capability[1] : 1160 0, 1161 msg.group_id, msg.group_id_len); 1162 } 1163 1164 if (reject != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 1165 p2ps_prov_free(p2p); 1166 1167 if (reject == P2P_SC_SUCCESS) { 1168 switch (config_methods) { 1169 case WPS_CONFIG_DISPLAY: 1170 dev->wps_prov_info = WPS_CONFIG_KEYPAD; 1171 break; 1172 case WPS_CONFIG_KEYPAD: 1173 dev->wps_prov_info = WPS_CONFIG_DISPLAY; 1174 break; 1175 case WPS_CONFIG_PUSHBUTTON: 1176 dev->wps_prov_info = WPS_CONFIG_PUSHBUTTON; 1177 break; 1178 case WPS_CONFIG_P2PS: 1179 dev->wps_prov_info = WPS_CONFIG_P2PS; 1180 break; 1181 default: 1182 dev->wps_prov_info = 0; 1183 break; 1184 } 1185 1186 if (msg.intended_addr) 1187 os_memcpy(dev->interface_addr, msg.intended_addr, 1188 ETH_ALEN); 1189 } 1190 p2p_parse_free(&msg); 1191 } 1192 1193 1194 static int p2p_validate_p2ps_pd_resp(struct p2p_data *p2p, 1195 struct p2p_message *msg) 1196 { 1197 u8 conn_cap_go = 0; 1198 u8 conn_cap_cli = 0; 1199 u32 session_id; 1200 u32 adv_id; 1201 1202 #define P2PS_PD_RESP_CHECK(_val, _attr) \ 1203 do { \ 1204 if ((_val) && !msg->_attr) { \ 1205 p2p_dbg(p2p, "P2PS PD Response missing " #_attr); \ 1206 return -1; \ 1207 } \ 1208 } while (0) 1209 1210 P2PS_PD_RESP_CHECK(1, status); 1211 P2PS_PD_RESP_CHECK(1, adv_id); 1212 P2PS_PD_RESP_CHECK(1, adv_mac); 1213 P2PS_PD_RESP_CHECK(1, capability); 1214 P2PS_PD_RESP_CHECK(1, p2p_device_info); 1215 P2PS_PD_RESP_CHECK(1, session_id); 1216 P2PS_PD_RESP_CHECK(1, session_mac); 1217 P2PS_PD_RESP_CHECK(1, feature_cap); 1218 1219 session_id = WPA_GET_LE32(msg->session_id); 1220 adv_id = WPA_GET_LE32(msg->adv_id); 1221 1222 if (p2p->p2ps_prov->session_id != session_id) { 1223 p2p_dbg(p2p, 1224 "Ignore PD Response with unexpected Session ID"); 1225 return -1; 1226 } 1227 1228 if (os_memcmp(p2p->p2ps_prov->session_mac, msg->session_mac, 1229 ETH_ALEN)) { 1230 p2p_dbg(p2p, 1231 "Ignore PD Response with unexpected Session MAC"); 1232 return -1; 1233 } 1234 1235 if (p2p->p2ps_prov->adv_id != adv_id) { 1236 p2p_dbg(p2p, 1237 "Ignore PD Response with unexpected Advertisement ID"); 1238 return -1; 1239 } 1240 1241 if (os_memcmp(p2p->p2ps_prov->adv_mac, msg->adv_mac, ETH_ALEN) != 0) { 1242 p2p_dbg(p2p, 1243 "Ignore PD Response with unexpected Advertisement MAC"); 1244 return -1; 1245 } 1246 1247 if (msg->listen_channel) { 1248 p2p_dbg(p2p, 1249 "Ignore malformed PD Response - unexpected Listen Channel"); 1250 return -1; 1251 } 1252 1253 if (*msg->status == P2P_SC_SUCCESS && 1254 !(!!msg->conn_cap ^ !!msg->persistent_dev)) { 1255 p2p_dbg(p2p, 1256 "Ignore malformed PD Response - either conn_cap or persistent group should be present"); 1257 return -1; 1258 } 1259 1260 if (msg->persistent_dev && *msg->status != P2P_SC_SUCCESS) { 1261 p2p_dbg(p2p, 1262 "Ignore malformed PD Response - persistent group is present, but the status isn't success"); 1263 return -1; 1264 } 1265 1266 if (msg->conn_cap) { 1267 conn_cap_go = *msg->conn_cap == P2PS_SETUP_GROUP_OWNER; 1268 conn_cap_cli = *msg->conn_cap == P2PS_SETUP_CLIENT; 1269 } 1270 1271 P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli, 1272 channel_list); 1273 P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli, 1274 config_timeout); 1275 1276 P2PS_PD_RESP_CHECK(conn_cap_go, group_id); 1277 P2PS_PD_RESP_CHECK(conn_cap_go, intended_addr); 1278 P2PS_PD_RESP_CHECK(conn_cap_go, operating_channel); 1279 /* 1280 * TODO: Also validate that operating channel is present if the device 1281 * is a GO in a persistent group. We can't do it here since we don't 1282 * know what is the role of the peer. It should be probably done in 1283 * p2ps_prov_complete callback, but currently operating channel isn't 1284 * passed to it. 1285 */ 1286 1287 #undef P2PS_PD_RESP_CHECK 1288 1289 return 0; 1290 } 1291 1292 1293 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa, 1294 const u8 *data, size_t len) 1295 { 1296 struct p2p_message msg; 1297 struct p2p_device *dev; 1298 u16 report_config_methods = 0, req_config_methods; 1299 u8 status = P2P_SC_SUCCESS; 1300 u32 adv_id = 0; 1301 u8 conncap = P2PS_SETUP_NEW; 1302 u8 adv_mac[ETH_ALEN]; 1303 const u8 *group_mac; 1304 int passwd_id = DEV_PW_DEFAULT; 1305 int p2ps_seeker; 1306 1307 if (p2p_parse(data, len, &msg)) 1308 return; 1309 1310 if (p2p->p2ps_prov && p2p_validate_p2ps_pd_resp(p2p, &msg)) { 1311 p2p_parse_free(&msg); 1312 return; 1313 } 1314 1315 /* Parse the P2PS members present */ 1316 if (msg.status) 1317 status = *msg.status; 1318 1319 group_mac = msg.intended_addr; 1320 1321 if (msg.adv_mac) 1322 os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); 1323 else 1324 os_memset(adv_mac, 0, ETH_ALEN); 1325 1326 if (msg.adv_id) 1327 adv_id = WPA_GET_LE32(msg.adv_id); 1328 1329 if (msg.conn_cap) { 1330 conncap = *msg.conn_cap; 1331 1332 /* Switch bits to local relative */ 1333 switch (conncap) { 1334 case P2PS_SETUP_GROUP_OWNER: 1335 conncap = P2PS_SETUP_CLIENT; 1336 break; 1337 case P2PS_SETUP_CLIENT: 1338 conncap = P2PS_SETUP_GROUP_OWNER; 1339 break; 1340 } 1341 } 1342 1343 p2p_dbg(p2p, "Received Provision Discovery Response from " MACSTR 1344 " with config methods 0x%x", 1345 MAC2STR(sa), msg.wps_config_methods); 1346 1347 dev = p2p_get_device(p2p, sa); 1348 if (dev == NULL || !dev->req_config_methods) { 1349 p2p_dbg(p2p, "Ignore Provision Discovery Response from " MACSTR 1350 " with no pending request", MAC2STR(sa)); 1351 p2p_parse_free(&msg); 1352 return; 1353 } else if (msg.wfd_subelems) { 1354 wpabuf_free(dev->info.wfd_subelems); 1355 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1356 } 1357 1358 if (dev->dialog_token != msg.dialog_token) { 1359 p2p_dbg(p2p, "Ignore Provision Discovery Response with unexpected Dialog Token %u (expected %u)", 1360 msg.dialog_token, dev->dialog_token); 1361 p2p_parse_free(&msg); 1362 return; 1363 } 1364 1365 if (p2p->pending_action_state == P2P_PENDING_PD) { 1366 os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN); 1367 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 1368 } 1369 1370 p2ps_seeker = p2p->p2ps_prov && p2p->p2ps_prov->pd_seeker; 1371 1372 /* 1373 * Use a local copy of the requested config methods since 1374 * p2p_reset_pending_pd() can clear this in the peer entry. 1375 */ 1376 req_config_methods = dev->req_config_methods; 1377 1378 /* 1379 * If the response is from the peer to whom a user initiated request 1380 * was sent earlier, we reset that state info here. 1381 */ 1382 if (p2p->user_initiated_pd && 1383 os_memcmp(p2p->pending_pd_devaddr, sa, ETH_ALEN) == 0) 1384 p2p_reset_pending_pd(p2p); 1385 1386 if (msg.wps_config_methods != req_config_methods) { 1387 p2p_dbg(p2p, "Peer rejected our Provision Discovery Request (received config_methods 0x%x expected 0x%x", 1388 msg.wps_config_methods, req_config_methods); 1389 if (p2p->cfg->prov_disc_fail) 1390 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa, 1391 P2P_PROV_DISC_REJECTED, 1392 adv_id, adv_mac, NULL); 1393 p2p_parse_free(&msg); 1394 p2ps_prov_free(p2p); 1395 goto out; 1396 } 1397 1398 report_config_methods = req_config_methods; 1399 dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | 1400 P2P_DEV_PD_PEER_KEYPAD | 1401 P2P_DEV_PD_PEER_P2PS); 1402 if (req_config_methods & WPS_CONFIG_DISPLAY) { 1403 p2p_dbg(p2p, "Peer " MACSTR 1404 " accepted to show a PIN on display", MAC2STR(sa)); 1405 dev->flags |= P2P_DEV_PD_PEER_DISPLAY; 1406 passwd_id = DEV_PW_REGISTRAR_SPECIFIED; 1407 } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { 1408 p2p_dbg(p2p, "Peer " MACSTR 1409 " accepted to write our PIN using keypad", 1410 MAC2STR(sa)); 1411 dev->flags |= P2P_DEV_PD_PEER_KEYPAD; 1412 passwd_id = DEV_PW_USER_SPECIFIED; 1413 } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { 1414 p2p_dbg(p2p, "Peer " MACSTR " accepted P2PS PIN", 1415 MAC2STR(sa)); 1416 dev->flags |= P2P_DEV_PD_PEER_P2PS; 1417 passwd_id = DEV_PW_P2PS_DEFAULT; 1418 } 1419 1420 if ((status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED) && 1421 p2p->p2ps_prov) { 1422 dev->oper_freq = 0; 1423 1424 /* 1425 * Save the reported channel list and operating frequency. 1426 * Note that the specification mandates that the responder 1427 * should include in the channel list only channels reported by 1428 * the initiator, so this is only a validity check, and if this 1429 * fails the flow would continue, although it would probably 1430 * fail. Same is true for the operating channel. 1431 */ 1432 if (msg.channel_list && msg.channel_list_len && 1433 p2p_peer_channels_check(p2p, &p2p->channels, dev, 1434 msg.channel_list, 1435 msg.channel_list_len) < 0) 1436 p2p_dbg(p2p, "P2PS PD Response - no common channels"); 1437 1438 if (msg.operating_channel) { 1439 if (p2p_channels_includes(&p2p->channels, 1440 msg.operating_channel[3], 1441 msg.operating_channel[4]) && 1442 p2p_channels_includes(&dev->channels, 1443 msg.operating_channel[3], 1444 msg.operating_channel[4])) { 1445 dev->oper_freq = 1446 p2p_channel_to_freq( 1447 msg.operating_channel[3], 1448 msg.operating_channel[4]); 1449 } else { 1450 p2p_dbg(p2p, 1451 "P2PS PD Response - invalid operating channel"); 1452 } 1453 } 1454 1455 if (p2p->cfg->p2ps_prov_complete) { 1456 int freq = 0; 1457 1458 if (conncap == P2PS_SETUP_GROUP_OWNER) { 1459 u8 tmp; 1460 1461 /* 1462 * Re-select the operating channel as it is 1463 * possible that original channel is no longer 1464 * valid. This should not really fail. 1465 */ 1466 if (p2p_go_select_channel(p2p, dev, &tmp) < 0) 1467 p2p_dbg(p2p, 1468 "P2PS PD channel selection failed"); 1469 1470 freq = p2p_channel_to_freq(p2p->op_reg_class, 1471 p2p->op_channel); 1472 if (freq < 0) 1473 freq = 0; 1474 } 1475 1476 p2p->cfg->p2ps_prov_complete( 1477 p2p->cfg->cb_ctx, status, sa, adv_mac, 1478 p2p->p2ps_prov->session_mac, 1479 group_mac, adv_id, p2p->p2ps_prov->session_id, 1480 conncap, passwd_id, msg.persistent_ssid, 1481 msg.persistent_ssid_len, 1, 0, NULL, 1482 msg.feature_cap, msg.feature_cap_len, freq, 1483 msg.group_id ? msg.group_id + ETH_ALEN : NULL, 1484 msg.group_id ? msg.group_id_len - ETH_ALEN : 0); 1485 } 1486 p2ps_prov_free(p2p); 1487 } else if (status != P2P_SC_SUCCESS && 1488 status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1489 status != P2P_SC_SUCCESS_DEFERRED && p2p->p2ps_prov) { 1490 if (p2p->cfg->p2ps_prov_complete) 1491 p2p->cfg->p2ps_prov_complete( 1492 p2p->cfg->cb_ctx, status, sa, adv_mac, 1493 p2p->p2ps_prov->session_mac, 1494 group_mac, adv_id, p2p->p2ps_prov->session_id, 1495 0, 0, NULL, 0, 1, 0, NULL, NULL, 0, 0, NULL, 0); 1496 p2ps_prov_free(p2p); 1497 } 1498 1499 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 1500 if (p2p->cfg->remove_stale_groups) { 1501 p2p->cfg->remove_stale_groups(p2p->cfg->cb_ctx, 1502 dev->info.p2p_device_addr, 1503 NULL, NULL, 0); 1504 } 1505 1506 if (msg.session_info && msg.session_info_len) { 1507 size_t info_len = msg.session_info_len; 1508 char *deferred_sess_resp = os_malloc(2 * info_len + 1); 1509 1510 if (!deferred_sess_resp) { 1511 p2p_parse_free(&msg); 1512 p2ps_prov_free(p2p); 1513 goto out; 1514 } 1515 utf8_escape((char *) msg.session_info, info_len, 1516 deferred_sess_resp, 2 * info_len + 1); 1517 1518 if (p2p->cfg->prov_disc_fail) 1519 p2p->cfg->prov_disc_fail( 1520 p2p->cfg->cb_ctx, sa, 1521 P2P_PROV_DISC_INFO_UNAVAILABLE, 1522 adv_id, adv_mac, 1523 deferred_sess_resp); 1524 os_free(deferred_sess_resp); 1525 } else 1526 if (p2p->cfg->prov_disc_fail) 1527 p2p->cfg->prov_disc_fail( 1528 p2p->cfg->cb_ctx, sa, 1529 P2P_PROV_DISC_INFO_UNAVAILABLE, 1530 adv_id, adv_mac, NULL); 1531 } else if (status != P2P_SC_SUCCESS) { 1532 p2p_dbg(p2p, "Peer rejected our Provision Discovery Request"); 1533 if (p2p->cfg->prov_disc_fail) 1534 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa, 1535 P2P_PROV_DISC_REJECTED, 1536 adv_id, adv_mac, NULL); 1537 p2p_parse_free(&msg); 1538 p2ps_prov_free(p2p); 1539 goto out; 1540 } 1541 1542 /* Store the provisioning info */ 1543 dev->wps_prov_info = msg.wps_config_methods; 1544 if (msg.intended_addr) 1545 os_memcpy(dev->interface_addr, msg.intended_addr, ETH_ALEN); 1546 1547 p2p_parse_free(&msg); 1548 1549 out: 1550 dev->req_config_methods = 0; 1551 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 1552 if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 1553 p2p_dbg(p2p, "Start GO Neg after the PD-before-GO-Neg workaround with " 1554 MACSTR, MAC2STR(dev->info.p2p_device_addr)); 1555 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1556 p2p_connect_send(p2p, dev); 1557 return; 1558 } 1559 1560 /* 1561 * prov_disc_resp callback is used to generate P2P-PROV-DISC-ENTER-PIN, 1562 * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. 1563 * Call it only for a legacy P2P PD or for P2PS PD scenarios where 1564 * show/enter PIN events are needed. 1565 * 1566 * The callback is called in the following cases: 1567 * 1. Legacy P2P PD response with a status SUCCESS 1568 * 2. P2PS, advertiser method: DISPLAY, autoaccept: true, 1569 * response status: SUCCESS, local method KEYPAD 1570 * 3. P2PS, advertiser method: KEYPAD,Seeker side, 1571 * response status: INFO_CURRENTLY_UNAVAILABLE, 1572 * local method: DISPLAY 1573 */ 1574 if (p2p->cfg->prov_disc_resp && 1575 ((status == P2P_SC_SUCCESS && !adv_id) || 1576 (p2ps_seeker && status == P2P_SC_SUCCESS && 1577 passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || 1578 (p2ps_seeker && 1579 status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1580 passwd_id == DEV_PW_USER_SPECIFIED))) 1581 p2p->cfg->prov_disc_resp(p2p->cfg->cb_ctx, sa, 1582 report_config_methods); 1583 1584 if (p2p->state == P2P_PD_DURING_FIND) { 1585 p2p_stop_listen_for_freq(p2p, 0); 1586 p2p_continue_find(p2p); 1587 } 1588 } 1589 1590 1591 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev, 1592 int join, int force_freq) 1593 { 1594 struct wpabuf *req; 1595 int freq; 1596 1597 if (force_freq > 0) 1598 freq = force_freq; 1599 else 1600 freq = dev->listen_freq > 0 ? dev->listen_freq : 1601 dev->oper_freq; 1602 if (freq <= 0) { 1603 p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 1604 MACSTR " to send Provision Discovery Request", 1605 MAC2STR(dev->info.p2p_device_addr)); 1606 return -1; 1607 } 1608 1609 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1610 if (!(dev->info.dev_capab & 1611 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1612 p2p_dbg(p2p, "Cannot use PD with P2P Device " MACSTR 1613 " that is in a group and is not discoverable", 1614 MAC2STR(dev->info.p2p_device_addr)); 1615 return -1; 1616 } 1617 /* TODO: use device discoverability request through GO */ 1618 } 1619 1620 if (p2p->p2ps_prov) { 1621 if (p2p->p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED) { 1622 if (p2p->p2ps_prov->method == WPS_CONFIG_DISPLAY) 1623 dev->req_config_methods = WPS_CONFIG_KEYPAD; 1624 else if (p2p->p2ps_prov->method == WPS_CONFIG_KEYPAD) 1625 dev->req_config_methods = WPS_CONFIG_DISPLAY; 1626 else 1627 dev->req_config_methods = WPS_CONFIG_P2PS; 1628 } else { 1629 /* Order of preference, based on peer's capabilities */ 1630 if (p2p->p2ps_prov->method) 1631 dev->req_config_methods = 1632 p2p->p2ps_prov->method; 1633 else if (dev->info.config_methods & WPS_CONFIG_P2PS) 1634 dev->req_config_methods = WPS_CONFIG_P2PS; 1635 else if (dev->info.config_methods & WPS_CONFIG_DISPLAY) 1636 dev->req_config_methods = WPS_CONFIG_DISPLAY; 1637 else 1638 dev->req_config_methods = WPS_CONFIG_KEYPAD; 1639 } 1640 p2p_dbg(p2p, 1641 "Building PD Request based on P2PS config method 0x%x status %d --> req_config_methods 0x%x", 1642 p2p->p2ps_prov->method, p2p->p2ps_prov->status, 1643 dev->req_config_methods); 1644 1645 if (p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, 1646 p2p->p2ps_prov->pref_freq, 1) < 0) 1647 return -1; 1648 } 1649 1650 req = p2p_build_prov_disc_req(p2p, dev, join); 1651 if (req == NULL) 1652 return -1; 1653 1654 if (p2p->state != P2P_IDLE) 1655 p2p_stop_listen_for_freq(p2p, freq); 1656 p2p->pending_action_state = P2P_PENDING_PD; 1657 if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 1658 p2p->cfg->dev_addr, dev->info.p2p_device_addr, 1659 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 1660 p2p_dbg(p2p, "Failed to send Action frame"); 1661 wpabuf_free(req); 1662 return -1; 1663 } 1664 1665 os_memcpy(p2p->pending_pd_devaddr, dev->info.p2p_device_addr, ETH_ALEN); 1666 1667 wpabuf_free(req); 1668 return 0; 1669 } 1670 1671 1672 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1673 struct p2ps_provision *p2ps_prov, 1674 u16 config_methods, int join, int force_freq, 1675 int user_initiated_pd) 1676 { 1677 struct p2p_device *dev; 1678 1679 dev = p2p_get_device(p2p, peer_addr); 1680 if (dev == NULL) 1681 dev = p2p_get_device_interface(p2p, peer_addr); 1682 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1683 p2p_dbg(p2p, "Provision Discovery Request destination " MACSTR 1684 " not yet known", MAC2STR(peer_addr)); 1685 os_free(p2ps_prov); 1686 return -1; 1687 } 1688 1689 p2p_dbg(p2p, "Provision Discovery Request with " MACSTR 1690 " (config methods 0x%x)", 1691 MAC2STR(peer_addr), config_methods); 1692 if (config_methods == 0 && !p2ps_prov) { 1693 os_free(p2ps_prov); 1694 return -1; 1695 } 1696 1697 if (p2ps_prov && p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED && 1698 p2p->p2ps_prov) { 1699 /* Use cached method from deferred provisioning */ 1700 p2ps_prov->method = p2p->p2ps_prov->method; 1701 } 1702 1703 /* Reset provisioning info */ 1704 dev->wps_prov_info = 0; 1705 p2ps_prov_free(p2p); 1706 p2p->p2ps_prov = p2ps_prov; 1707 1708 dev->req_config_methods = config_methods; 1709 if (join) 1710 dev->flags |= P2P_DEV_PD_FOR_JOIN; 1711 else 1712 dev->flags &= ~P2P_DEV_PD_FOR_JOIN; 1713 1714 if (p2p->state != P2P_IDLE && p2p->state != P2P_SEARCH && 1715 p2p->state != P2P_LISTEN_ONLY) { 1716 p2p_dbg(p2p, "Busy with other operations; postpone Provision Discovery Request with " 1717 MACSTR " (config methods 0x%x)", 1718 MAC2STR(peer_addr), config_methods); 1719 return 0; 1720 } 1721 1722 p2p->user_initiated_pd = user_initiated_pd; 1723 p2p->pd_force_freq = force_freq; 1724 1725 if (p2p->user_initiated_pd) 1726 p2p->pd_retries = MAX_PROV_DISC_REQ_RETRIES; 1727 1728 /* 1729 * Assign dialog token here to use the same value in each retry within 1730 * the same PD exchange. 1731 */ 1732 dev->dialog_token++; 1733 if (dev->dialog_token == 0) 1734 dev->dialog_token = 1; 1735 1736 return p2p_send_prov_disc_req(p2p, dev, join, force_freq); 1737 } 1738 1739 1740 void p2p_reset_pending_pd(struct p2p_data *p2p) 1741 { 1742 struct p2p_device *dev; 1743 1744 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 1745 if (os_memcmp(p2p->pending_pd_devaddr, 1746 dev->info.p2p_device_addr, ETH_ALEN)) 1747 continue; 1748 if (!dev->req_config_methods) 1749 continue; 1750 if (dev->flags & P2P_DEV_PD_FOR_JOIN) 1751 continue; 1752 /* Reset the config methods of the device */ 1753 dev->req_config_methods = 0; 1754 } 1755 1756 p2p->user_initiated_pd = 0; 1757 os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN); 1758 p2p->pd_retries = 0; 1759 p2p->pd_force_freq = 0; 1760 } 1761 1762 1763 void p2ps_prov_free(struct p2p_data *p2p) 1764 { 1765 os_free(p2p->p2ps_prov); 1766 p2p->p2ps_prov = NULL; 1767 } 1768