p2p_invitation.c revision 91c40cdce17424d9a4718876becf0b7811cf68f2
1/* 2 * Wi-Fi Direct - P2P Invitation procedure 3 * Copyright (c) 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 "p2p_i.h" 14#include "p2p.h" 15 16 17static struct wpabuf * p2p_build_invitation_req(struct p2p_data *p2p, 18 struct p2p_device *peer, 19 const u8 *go_dev_addr) 20{ 21 struct wpabuf *buf; 22 u8 *len; 23 const u8 *dev_addr; 24 size_t extra = 0; 25 26#ifdef CONFIG_WIFI_DISPLAY 27 struct wpabuf *wfd_ie = p2p->wfd_ie_invitation; 28 if (wfd_ie && p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 29 size_t i; 30 for (i = 0; i < p2p->num_groups; i++) { 31 struct p2p_group *g = p2p->groups[i]; 32 struct wpabuf *ie; 33 if (os_memcmp(p2p_group_get_interface_addr(g), 34 p2p->inv_bssid, ETH_ALEN) != 0) 35 continue; 36 ie = p2p_group_get_wfd_ie(g); 37 if (ie) { 38 wfd_ie = ie; 39 break; 40 } 41 } 42 } 43 if (wfd_ie) 44 extra = wpabuf_len(wfd_ie); 45#endif /* CONFIG_WIFI_DISPLAY */ 46 47 buf = wpabuf_alloc(1000 + extra); 48 if (buf == NULL) 49 return NULL; 50 51 peer->dialog_token++; 52 if (peer->dialog_token == 0) 53 peer->dialog_token = 1; 54 p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_REQ, 55 peer->dialog_token); 56 57 len = p2p_buf_add_ie_hdr(buf); 58 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO || !p2p->inv_persistent) 59 p2p_buf_add_config_timeout(buf, 0, 0); 60 else 61 p2p_buf_add_config_timeout(buf, p2p->go_timeout, 62 p2p->client_timeout); 63 p2p_buf_add_invitation_flags(buf, p2p->inv_persistent ? 64 P2P_INVITATION_FLAGS_TYPE : 0); 65 p2p_buf_add_operating_channel(buf, p2p->cfg->country, 66 p2p->op_reg_class, p2p->op_channel); 67 if (p2p->inv_bssid_set) 68 p2p_buf_add_group_bssid(buf, p2p->inv_bssid); 69#ifdef ANDROID_P2P 70 if (p2p->cfg->p2p_concurrency == P2P_SINGLE_CHANNEL_CONCURRENT && p2p->op_channel) { 71 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "Forcing channel list %d", p2p->op_channel); 72 p2p_buf_add_oper_as_channel_list(buf, p2p->cfg->country, p2p->op_reg_class, 73 p2p->op_channel); 74 } else { 75#endif 76 p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 77#ifdef ANDROID_P2P 78 } 79#endif 80 if (go_dev_addr) 81 dev_addr = go_dev_addr; 82 else if (p2p->inv_role == P2P_INVITE_ROLE_CLIENT) 83 dev_addr = peer->info.p2p_device_addr; 84 else 85 dev_addr = p2p->cfg->dev_addr; 86 p2p_buf_add_group_id(buf, dev_addr, p2p->inv_ssid, p2p->inv_ssid_len); 87 p2p_buf_add_device_info(buf, p2p, peer); 88 p2p_buf_update_ie_hdr(buf, len); 89 90#ifdef CONFIG_WIFI_DISPLAY 91 if (wfd_ie) 92 wpabuf_put_buf(buf, wfd_ie); 93#endif /* CONFIG_WIFI_DISPLAY */ 94 95 return buf; 96} 97 98 99static struct wpabuf * p2p_build_invitation_resp(struct p2p_data *p2p, 100 struct p2p_device *peer, 101 u8 dialog_token, u8 status, 102 const u8 *group_bssid, 103 u8 reg_class, u8 channel, 104 struct p2p_channels *channels) 105{ 106 struct wpabuf *buf; 107 u8 *len; 108 size_t extra = 0; 109 110#ifdef CONFIG_WIFI_DISPLAY 111 struct wpabuf *wfd_ie = p2p->wfd_ie_invitation; 112 if (wfd_ie && group_bssid) { 113 size_t i; 114 for (i = 0; i < p2p->num_groups; i++) { 115 struct p2p_group *g = p2p->groups[i]; 116 struct wpabuf *ie; 117 if (os_memcmp(p2p_group_get_interface_addr(g), 118 group_bssid, ETH_ALEN) != 0) 119 continue; 120 ie = p2p_group_get_wfd_ie(g); 121 if (ie) { 122 wfd_ie = ie; 123 break; 124 } 125 } 126 } 127 if (wfd_ie) 128 extra = wpabuf_len(wfd_ie); 129#endif /* CONFIG_WIFI_DISPLAY */ 130 131 buf = wpabuf_alloc(1000 + extra); 132 if (buf == NULL) 133 return NULL; 134 135 p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_RESP, 136 dialog_token); 137 138 len = p2p_buf_add_ie_hdr(buf); 139 p2p_buf_add_status(buf, status); 140 p2p_buf_add_config_timeout(buf, 0, 0); /* FIX */ 141 if (reg_class && channel) 142 p2p_buf_add_operating_channel(buf, p2p->cfg->country, 143 reg_class, channel); 144 if (group_bssid) 145 p2p_buf_add_group_bssid(buf, group_bssid); 146#ifdef ANDROID_P2P 147 if (p2p->cfg->p2p_concurrency == P2P_SINGLE_CHANNEL_CONCURRENT && channel) { 148 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "Forcing channel list %d", channel); 149 p2p_buf_add_oper_as_channel_list(buf, p2p->cfg->country, 150 reg_class, channel); 151 } else { 152#endif 153 if (channels) 154 p2p_buf_add_channel_list(buf, p2p->cfg->country, channels); 155#ifdef ANDROID_P2P 156 } 157#endif 158 p2p_buf_update_ie_hdr(buf, len); 159 160#ifdef CONFIG_WIFI_DISPLAY 161 if (wfd_ie) 162 wpabuf_put_buf(buf, wfd_ie); 163#endif /* CONFIG_WIFI_DISPLAY */ 164 165 return buf; 166} 167 168 169void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa, 170 const u8 *data, size_t len, int rx_freq) 171{ 172 struct p2p_device *dev; 173 struct p2p_message msg; 174 struct wpabuf *resp = NULL; 175 u8 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 176 int freq; 177 int go = 0; 178 u8 group_bssid[ETH_ALEN], *bssid; 179 int op_freq = 0; 180 u8 reg_class = 0, channel = 0; 181 struct p2p_channels intersection, *channels = NULL; 182 int persistent; 183 184 os_memset(group_bssid, 0, sizeof(group_bssid)); 185 186 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 187 "P2P: Received Invitation Request from " MACSTR " (freq=%d)", 188 MAC2STR(sa), rx_freq); 189 190 if (p2p_parse(data, len, &msg)) 191 return; 192 193 dev = p2p_get_device(p2p, sa); 194 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 195 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 196 "P2P: Invitation Request from unknown peer " 197 MACSTR, MAC2STR(sa)); 198 199 if (p2p_add_device(p2p, sa, rx_freq, 0, data + 1, len - 1, 0)) 200 { 201 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 202 "P2P: Invitation Request add device failed " 203 MACSTR, MAC2STR(sa)); 204 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 205 goto fail; 206 } 207 208 dev = p2p_get_device(p2p, sa); 209 if (dev == NULL) { 210 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 211 "P2P: Reject Invitation Request from unknown " 212 "peer " MACSTR, MAC2STR(sa)); 213 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 214 goto fail; 215 } 216 } 217 218 if (!msg.group_id || !msg.channel_list) { 219 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 220 "P2P: Mandatory attribute missing in Invitation " 221 "Request from " MACSTR, MAC2STR(sa)); 222 status = P2P_SC_FAIL_INVALID_PARAMS; 223 goto fail; 224 } 225 226 if (msg.invitation_flags) 227 persistent = *msg.invitation_flags & P2P_INVITATION_FLAGS_TYPE; 228 else { 229 /* Invitation Flags is a mandatory attribute starting from P2P 230 * spec 1.06. As a backwards compatibility mechanism, assume 231 * the request was for a persistent group if the attribute is 232 * missing. 233 */ 234 wpa_printf(MSG_DEBUG, "P2P: Mandatory Invitation Flags " 235 "attribute missing from Invitation Request"); 236 persistent = 1; 237 } 238 239 if (p2p_peer_channels_check(p2p, &p2p->cfg->channels, dev, 240 msg.channel_list, msg.channel_list_len) < 241 0) { 242 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 243 "P2P: No common channels found"); 244 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 245 goto fail; 246 } 247 248 if (p2p->cfg->invitation_process) { 249 status = p2p->cfg->invitation_process( 250 p2p->cfg->cb_ctx, sa, msg.group_bssid, msg.group_id, 251 msg.group_id + ETH_ALEN, msg.group_id_len - ETH_ALEN, 252 &go, group_bssid, &op_freq, persistent); 253 } 254 255 if (op_freq) { 256 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Invitation " 257 "processing forced frequency %d MHz", op_freq); 258 if (p2p_freq_to_channel(p2p->cfg->country, op_freq, 259 ®_class, &channel) < 0) { 260 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 261 "P2P: Unknown forced freq %d MHz from " 262 "invitation_process()", op_freq); 263 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 264 goto fail; 265 } 266 267 p2p_channels_intersect(&p2p->cfg->channels, &dev->channels, 268 &intersection); 269 if (!p2p_channels_includes(&intersection, reg_class, channel)) 270 { 271 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 272 "P2P: forced freq %d MHz not in the supported " 273 "channels interaction", op_freq); 274 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 275 goto fail; 276 } 277 278 if (status == P2P_SC_SUCCESS) 279 channels = &intersection; 280 } else { 281 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 282 "P2P: No forced channel from invitation processing - " 283 "figure out best one to use"); 284 285 p2p_channels_intersect(&p2p->cfg->channels, &dev->channels, 286 &intersection); 287 /* Default to own configuration as a starting point */ 288 p2p->op_reg_class = p2p->cfg->op_reg_class; 289 p2p->op_channel = p2p->cfg->op_channel; 290 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Own default " 291 "op_class %d channel %d", 292 p2p->op_reg_class, p2p->op_channel); 293 294 /* Use peer preference if specified and compatible */ 295 if (msg.operating_channel) { 296 int req_freq; 297 req_freq = p2p_channel_to_freq( 298 (const char *) msg.operating_channel, 299 msg.operating_channel[3], 300 msg.operating_channel[4]); 301 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " 302 "operating channel preference: %d MHz", 303 req_freq); 304 if (req_freq > 0 && 305 p2p_channels_includes(&intersection, 306 msg.operating_channel[3], 307 msg.operating_channel[4])) { 308 p2p->op_reg_class = msg.operating_channel[3]; 309 p2p->op_channel = msg.operating_channel[4]; 310 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 311 "P2P: Use peer preference op_class %d " 312 "channel %d", 313 p2p->op_reg_class, p2p->op_channel); 314 } else { 315 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 316 "P2P: Cannot use peer channel " 317 "preference"); 318 } 319 } 320 321 if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 322 p2p->op_channel)) { 323 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 324 "P2P: Initially selected channel (op_class %d " 325 "channel %d) not in channel intersection - try " 326 "to reselect", 327 p2p->op_reg_class, p2p->op_channel); 328 p2p_reselect_channel(p2p, &intersection); 329 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 330 "P2P: Re-selection result: op_class %d " 331 "channel %d", 332 p2p->op_reg_class, p2p->op_channel); 333 if (!p2p_channels_includes(&intersection, 334 p2p->op_reg_class, 335 p2p->op_channel)) { 336 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 337 "P2P: Peer does not support selected " 338 "operating channel (reg_class=%u " 339 "channel=%u)", 340 p2p->op_reg_class, p2p->op_channel); 341 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 342 goto fail; 343 } 344 } 345 346 op_freq = p2p_channel_to_freq(p2p->cfg->country, 347 p2p->op_reg_class, 348 p2p->op_channel); 349 if (op_freq < 0) { 350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 351 "P2P: Unknown operational channel " 352 "(country=%c%c reg_class=%u channel=%u)", 353 p2p->cfg->country[0], p2p->cfg->country[1], 354 p2p->op_reg_class, p2p->op_channel); 355 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 356 goto fail; 357 } 358 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Selected operating " 359 "channel - %d MHz", op_freq); 360 361 if (status == P2P_SC_SUCCESS) { 362 reg_class = p2p->op_reg_class; 363 channel = p2p->op_channel; 364 channels = &intersection; 365 } 366 } 367 368fail: 369 if (go && status == P2P_SC_SUCCESS && !is_zero_ether_addr(group_bssid)) 370 bssid = group_bssid; 371 else 372 bssid = NULL; 373 resp = p2p_build_invitation_resp(p2p, dev, msg.dialog_token, status, 374 bssid, reg_class, channel, channels); 375 376 if (resp == NULL) 377 goto out; 378 379 if (rx_freq > 0) 380 freq = rx_freq; 381 else 382 freq = p2p_channel_to_freq(p2p->cfg->country, 383 p2p->cfg->reg_class, 384 p2p->cfg->channel); 385 if (freq < 0) { 386 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 387 "P2P: Unknown regulatory class/channel"); 388 goto out; 389 } 390 391 /* 392 * Store copy of invitation data to be used when processing TX status 393 * callback for the Acton frame. 394 */ 395 os_memcpy(p2p->inv_sa, sa, ETH_ALEN); 396 if (msg.group_bssid) { 397 os_memcpy(p2p->inv_group_bssid, msg.group_bssid, ETH_ALEN); 398 p2p->inv_group_bssid_ptr = p2p->inv_group_bssid; 399 } else 400 p2p->inv_group_bssid_ptr = NULL; 401 if (msg.group_id_len - ETH_ALEN <= 32) { 402 os_memcpy(p2p->inv_ssid, msg.group_id + ETH_ALEN, 403 msg.group_id_len - ETH_ALEN); 404 p2p->inv_ssid_len = msg.group_id_len - ETH_ALEN; 405 } 406 os_memcpy(p2p->inv_go_dev_addr, msg.group_id, ETH_ALEN); 407 p2p->inv_status = status; 408 p2p->inv_op_freq = op_freq; 409 410 p2p->pending_action_state = P2P_PENDING_INVITATION_RESPONSE; 411 if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 412 p2p->cfg->dev_addr, 413 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 414 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 415 "P2P: Failed to send Action frame"); 416 } 417 418out: 419 wpabuf_free(resp); 420 p2p_parse_free(&msg); 421} 422 423 424void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa, 425 const u8 *data, size_t len) 426{ 427 struct p2p_device *dev; 428 struct p2p_message msg; 429 430 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 431 "P2P: Received Invitation Response from " MACSTR, 432 MAC2STR(sa)); 433 434 dev = p2p_get_device(p2p, sa); 435 if (dev == NULL) { 436 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 437 "P2P: Ignore Invitation Response from unknown peer " 438 MACSTR, MAC2STR(sa)); 439 return; 440 } 441 442 if (dev != p2p->invite_peer) { 443 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 444 "P2P: Ignore unexpected Invitation Response from peer " 445 MACSTR, MAC2STR(sa)); 446 return; 447 } 448 449 if (p2p_parse(data, len, &msg)) 450 return; 451 452 if (!msg.status) { 453 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 454 "P2P: Mandatory Status attribute missing in " 455 "Invitation Response from " MACSTR, MAC2STR(sa)); 456 p2p_parse_free(&msg); 457 return; 458 } 459 460 if (p2p->cfg->invitation_result) 461 p2p->cfg->invitation_result(p2p->cfg->cb_ctx, *msg.status, 462 msg.group_bssid); 463 464 p2p_parse_free(&msg); 465 466 p2p_clear_timeout(p2p); 467 p2p_set_state(p2p, P2P_IDLE); 468 p2p->invite_peer = NULL; 469} 470 471 472int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev, 473 const u8 *go_dev_addr) 474{ 475 struct wpabuf *req; 476 int freq; 477 478 freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 479 if (freq <= 0) { 480 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 481 "P2P: No Listen/Operating frequency known for the " 482 "peer " MACSTR " to send Invitation Request", 483 MAC2STR(dev->info.p2p_device_addr)); 484 return -1; 485 } 486 487 req = p2p_build_invitation_req(p2p, dev, go_dev_addr); 488 if (req == NULL) 489 return -1; 490 if (p2p->state != P2P_IDLE) 491 p2p_stop_listen_for_freq(p2p, freq); 492 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 493 "P2P: Sending Invitation Request"); 494 p2p_set_state(p2p, P2P_INVITE); 495 p2p->pending_action_state = P2P_PENDING_INVITATION_REQUEST; 496 p2p->invite_peer = dev; 497 dev->invitation_reqs++; 498 if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 499 p2p->cfg->dev_addr, dev->info.p2p_device_addr, 500 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 501 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 502 "P2P: Failed to send Action frame"); 503 /* Use P2P find to recover and retry */ 504 p2p_set_timeout(p2p, 0, 0); 505 } 506 507 wpabuf_free(req); 508 509 return 0; 510} 511 512 513void p2p_invitation_req_cb(struct p2p_data *p2p, int success) 514{ 515 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 516 "P2P: Invitation Request TX callback: success=%d", success); 517 518 if (p2p->invite_peer == NULL) { 519 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 520 "P2P: No pending Invite"); 521 return; 522 } 523 524 /* 525 * Use P2P find, if needed, to find the other device from its listen 526 * channel. 527 */ 528 p2p_set_state(p2p, P2P_INVITE); 529 p2p_set_timeout(p2p, 0, 100000); 530} 531 532 533void p2p_invitation_resp_cb(struct p2p_data *p2p, int success) 534{ 535 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 536 "P2P: Invitation Response TX callback: success=%d", success); 537 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 538 539 if (success && p2p->cfg->invitation_received) { 540 p2p->cfg->invitation_received(p2p->cfg->cb_ctx, 541 p2p->inv_sa, 542 p2p->inv_group_bssid_ptr, 543 p2p->inv_ssid, p2p->inv_ssid_len, 544 p2p->inv_go_dev_addr, 545 p2p->inv_status, 546 p2p->inv_op_freq); 547 } 548} 549 550 551int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 552 const u8 *bssid, const u8 *ssid, size_t ssid_len, 553 unsigned int force_freq, const u8 *go_dev_addr, 554 int persistent_group) 555{ 556 struct p2p_device *dev; 557 558 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 559 "P2P: Request to invite peer " MACSTR " role=%d persistent=%d " 560 "force_freq=%u", 561 MAC2STR(peer), role, persistent_group, force_freq); 562 if (bssid) 563 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 564 "P2P: Invitation for BSSID " MACSTR, MAC2STR(bssid)); 565 if (go_dev_addr) { 566 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 567 "P2P: Invitation for GO Device Address " MACSTR, 568 MAC2STR(go_dev_addr)); 569 os_memcpy(p2p->invite_go_dev_addr_buf, go_dev_addr, ETH_ALEN); 570 p2p->invite_go_dev_addr = p2p->invite_go_dev_addr_buf; 571 } else 572 p2p->invite_go_dev_addr = NULL; 573 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Invitation for SSID", 574 ssid, ssid_len); 575 576 dev = p2p_get_device(p2p, peer); 577 if (dev == NULL || (dev->listen_freq <= 0 && dev->oper_freq <= 0)) { 578 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 579 "P2P: Cannot invite unknown P2P Device " MACSTR, 580 MAC2STR(peer)); 581 return -1; 582 } 583 584 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 585 if (!(dev->info.dev_capab & 586 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 587 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 588 "P2P: Cannot invite a P2P Device " MACSTR 589 " that is in a group and is not discoverable", 590 MAC2STR(peer)); 591 } 592 /* TODO: use device discoverability request through GO */ 593 } 594 595 dev->invitation_reqs = 0; 596 597 if (force_freq) { 598 if (p2p_freq_to_channel(p2p->cfg->country, force_freq, 599 &p2p->op_reg_class, &p2p->op_channel) < 600 0) { 601 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 602 "P2P: Unsupported frequency %u MHz", 603 force_freq); 604 return -1; 605 } 606 p2p->channels.reg_classes = 1; 607 p2p->channels.reg_class[0].channels = 1; 608 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 609 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 610 } else { 611 p2p->op_reg_class = p2p->cfg->op_reg_class; 612 p2p->op_channel = p2p->cfg->op_channel; 613 os_memcpy(&p2p->channels, &p2p->cfg->channels, 614 sizeof(struct p2p_channels)); 615 } 616 617 if (p2p->state != P2P_IDLE) 618 p2p_stop_find(p2p); 619 620 p2p->inv_role = role; 621 p2p->inv_bssid_set = bssid != NULL; 622 if (bssid) 623 os_memcpy(p2p->inv_bssid, bssid, ETH_ALEN); 624 os_memcpy(p2p->inv_ssid, ssid, ssid_len); 625 p2p->inv_ssid_len = ssid_len; 626 p2p->inv_persistent = persistent_group; 627 return p2p_invite_send(p2p, dev, go_dev_addr); 628} 629