p2p_invitation.c revision 717574375e969e8272c6d1a26137286eac158abb
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 int dev_pw_id) 21{ 22 struct wpabuf *buf; 23 u8 *len; 24 const u8 *dev_addr; 25 size_t extra = 0; 26 27#ifdef CONFIG_WIFI_DISPLAY 28 struct wpabuf *wfd_ie = p2p->wfd_ie_invitation; 29 if (wfd_ie && p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 30 size_t i; 31 for (i = 0; i < p2p->num_groups; i++) { 32 struct p2p_group *g = p2p->groups[i]; 33 struct wpabuf *ie; 34 if (os_memcmp(p2p_group_get_interface_addr(g), 35 p2p->inv_bssid, ETH_ALEN) != 0) 36 continue; 37 ie = p2p_group_get_wfd_ie(g); 38 if (ie) { 39 wfd_ie = ie; 40 break; 41 } 42 } 43 } 44 if (wfd_ie) 45 extra = wpabuf_len(wfd_ie); 46#endif /* CONFIG_WIFI_DISPLAY */ 47 48 buf = wpabuf_alloc(1000 + extra); 49 if (buf == NULL) 50 return NULL; 51 52 peer->dialog_token++; 53 if (peer->dialog_token == 0) 54 peer->dialog_token = 1; 55 p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_REQ, 56 peer->dialog_token); 57 58 len = p2p_buf_add_ie_hdr(buf); 59 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO || !p2p->inv_persistent) 60 p2p_buf_add_config_timeout(buf, 0, 0); 61 else 62 p2p_buf_add_config_timeout(buf, p2p->go_timeout, 63 p2p->client_timeout); 64 p2p_buf_add_invitation_flags(buf, p2p->inv_persistent ? 65 P2P_INVITATION_FLAGS_TYPE : 0); 66 if (p2p->inv_role != P2P_INVITE_ROLE_CLIENT || 67 !(peer->flags & P2P_DEV_NO_PREF_CHAN)) 68 p2p_buf_add_operating_channel(buf, p2p->cfg->country, 69 p2p->op_reg_class, 70 p2p->op_channel); 71 if (p2p->inv_bssid_set) 72 p2p_buf_add_group_bssid(buf, p2p->inv_bssid); 73 p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 74 if (go_dev_addr) 75 dev_addr = go_dev_addr; 76 else if (p2p->inv_role == P2P_INVITE_ROLE_CLIENT) 77 dev_addr = peer->info.p2p_device_addr; 78 else 79 dev_addr = p2p->cfg->dev_addr; 80 p2p_buf_add_group_id(buf, dev_addr, p2p->inv_ssid, p2p->inv_ssid_len); 81 p2p_buf_add_device_info(buf, p2p, peer); 82 p2p_buf_update_ie_hdr(buf, len); 83 84#ifdef CONFIG_WIFI_DISPLAY 85 if (wfd_ie) 86 wpabuf_put_buf(buf, wfd_ie); 87#endif /* CONFIG_WIFI_DISPLAY */ 88 89 if (dev_pw_id >= 0) { 90 /* WSC IE in Invitation Request for NFC static handover */ 91 p2p_build_wps_ie(p2p, buf, dev_pw_id, 0); 92 } 93 94 return buf; 95} 96 97 98static struct wpabuf * p2p_build_invitation_resp(struct p2p_data *p2p, 99 struct p2p_device *peer, 100 u8 dialog_token, u8 status, 101 const u8 *group_bssid, 102 u8 reg_class, u8 channel, 103 struct p2p_channels *channels) 104{ 105 struct wpabuf *buf; 106 u8 *len; 107 size_t extra = 0; 108 109#ifdef CONFIG_WIFI_DISPLAY 110 struct wpabuf *wfd_ie = p2p->wfd_ie_invitation; 111 if (wfd_ie && group_bssid) { 112 size_t i; 113 for (i = 0; i < p2p->num_groups; i++) { 114 struct p2p_group *g = p2p->groups[i]; 115 struct wpabuf *ie; 116 if (os_memcmp(p2p_group_get_interface_addr(g), 117 group_bssid, ETH_ALEN) != 0) 118 continue; 119 ie = p2p_group_get_wfd_ie(g); 120 if (ie) { 121 wfd_ie = ie; 122 break; 123 } 124 } 125 } 126 if (wfd_ie) 127 extra = wpabuf_len(wfd_ie); 128#endif /* CONFIG_WIFI_DISPLAY */ 129 130 buf = wpabuf_alloc(1000 + extra); 131 if (buf == NULL) 132 return NULL; 133 134 p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_RESP, 135 dialog_token); 136 137 len = p2p_buf_add_ie_hdr(buf); 138 p2p_buf_add_status(buf, status); 139 p2p_buf_add_config_timeout(buf, 0, 0); /* FIX */ 140 if (reg_class && channel) 141 p2p_buf_add_operating_channel(buf, p2p->cfg->country, 142 reg_class, channel); 143 if (group_bssid) 144 p2p_buf_add_group_bssid(buf, group_bssid); 145 if (channels) 146 p2p_buf_add_channel_list(buf, p2p->cfg->country, channels); 147 p2p_buf_update_ie_hdr(buf, len); 148 149#ifdef CONFIG_WIFI_DISPLAY 150 if (wfd_ie) 151 wpabuf_put_buf(buf, wfd_ie); 152#endif /* CONFIG_WIFI_DISPLAY */ 153 154 return buf; 155} 156 157 158void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa, 159 const u8 *data, size_t len, int rx_freq) 160{ 161 struct p2p_device *dev; 162 struct p2p_message msg; 163 struct wpabuf *resp = NULL; 164 u8 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 165 int freq; 166 int go = 0; 167 u8 group_bssid[ETH_ALEN], *bssid; 168 int op_freq = 0; 169 u8 reg_class = 0, channel = 0; 170 struct p2p_channels intersection, *channels = NULL; 171 int persistent; 172 173 os_memset(group_bssid, 0, sizeof(group_bssid)); 174 175 p2p_dbg(p2p, "Received Invitation Request from " MACSTR " (freq=%d)", 176 MAC2STR(sa), rx_freq); 177 178 if (p2p_parse(data, len, &msg)) 179 return; 180 181 dev = p2p_get_device(p2p, sa); 182 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 183 p2p_dbg(p2p, "Invitation Request from unknown peer " MACSTR, 184 MAC2STR(sa)); 185 186 if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1, 187 0)) { 188 p2p_dbg(p2p, "Invitation Request add device failed " 189 MACSTR, MAC2STR(sa)); 190 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 191 goto fail; 192 } 193 194 dev = p2p_get_device(p2p, sa); 195 if (dev == NULL) { 196 p2p_dbg(p2p, "Reject Invitation Request from unknown peer " 197 MACSTR, MAC2STR(sa)); 198 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 199 goto fail; 200 } 201 } 202 203 if (!msg.group_id || !msg.channel_list) { 204 p2p_dbg(p2p, "Mandatory attribute missing in Invitation Request from " 205 MACSTR, MAC2STR(sa)); 206 status = P2P_SC_FAIL_INVALID_PARAMS; 207 goto fail; 208 } 209 210 if (msg.invitation_flags) 211 persistent = *msg.invitation_flags & P2P_INVITATION_FLAGS_TYPE; 212 else { 213 /* Invitation Flags is a mandatory attribute starting from P2P 214 * spec 1.06. As a backwards compatibility mechanism, assume 215 * the request was for a persistent group if the attribute is 216 * missing. 217 */ 218 p2p_dbg(p2p, "Mandatory Invitation Flags attribute missing from Invitation Request"); 219 persistent = 1; 220 } 221 222 if (p2p_peer_channels_check(p2p, &p2p->cfg->channels, dev, 223 msg.channel_list, msg.channel_list_len) < 224 0) { 225 p2p_dbg(p2p, "No common channels found"); 226 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 227 goto fail; 228 } 229 230 p2p_channels_dump(p2p, "own channels", &p2p->cfg->channels); 231 p2p_channels_dump(p2p, "peer channels", &dev->channels); 232 p2p_channels_intersect(&p2p->cfg->channels, &dev->channels, 233 &intersection); 234 p2p_channels_dump(p2p, "intersection", &intersection); 235 236 if (p2p->cfg->invitation_process) { 237 status = p2p->cfg->invitation_process( 238 p2p->cfg->cb_ctx, sa, msg.group_bssid, msg.group_id, 239 msg.group_id + ETH_ALEN, msg.group_id_len - ETH_ALEN, 240 &go, group_bssid, &op_freq, persistent, &intersection, 241 msg.dev_password_id_present ? msg.dev_password_id : -1); 242 } 243 244 if (op_freq) { 245 p2p_dbg(p2p, "Invitation processing forced frequency %d MHz", 246 op_freq); 247 if (p2p_freq_to_channel(op_freq, ®_class, &channel) < 0) { 248 p2p_dbg(p2p, "Unknown forced freq %d MHz from invitation_process()", 249 op_freq); 250 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 251 goto fail; 252 } 253 254 if (!p2p_channels_includes(&intersection, reg_class, channel)) 255 { 256 p2p_dbg(p2p, "forced freq %d MHz not in the supported channels interaction", 257 op_freq); 258 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 259 goto fail; 260 } 261 262 if (status == P2P_SC_SUCCESS) 263 channels = &intersection; 264 } else { 265 p2p_dbg(p2p, "No forced channel from invitation processing - figure out best one to use"); 266 267 /* Default to own configuration as a starting point */ 268 p2p->op_reg_class = p2p->cfg->op_reg_class; 269 p2p->op_channel = p2p->cfg->op_channel; 270 p2p_dbg(p2p, "Own default op_class %d channel %d", 271 p2p->op_reg_class, p2p->op_channel); 272 273 /* Use peer preference if specified and compatible */ 274 if (msg.operating_channel) { 275 int req_freq; 276 req_freq = p2p_channel_to_freq( 277 msg.operating_channel[3], 278 msg.operating_channel[4]); 279 p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 280 req_freq); 281 if (req_freq > 0 && 282 p2p_channels_includes(&intersection, 283 msg.operating_channel[3], 284 msg.operating_channel[4])) { 285 p2p->op_reg_class = msg.operating_channel[3]; 286 p2p->op_channel = msg.operating_channel[4]; 287 p2p_dbg(p2p, "Use peer preference op_class %d channel %d", 288 p2p->op_reg_class, p2p->op_channel); 289 } else { 290 p2p_dbg(p2p, "Cannot use peer channel preference"); 291 } 292 } 293 294 /* Reselect the channel only for the case of the GO */ 295 if (go && 296 !p2p_channels_includes(&intersection, p2p->op_reg_class, 297 p2p->op_channel)) { 298 p2p_dbg(p2p, "Initially selected channel (op_class %d channel %d) not in channel intersection - try to reselect", 299 p2p->op_reg_class, p2p->op_channel); 300 p2p_reselect_channel(p2p, &intersection); 301 p2p_dbg(p2p, "Re-selection result: op_class %d channel %d", 302 p2p->op_reg_class, p2p->op_channel); 303 if (!p2p_channels_includes(&intersection, 304 p2p->op_reg_class, 305 p2p->op_channel)) { 306 p2p_dbg(p2p, "Peer does not support selected operating channel (reg_class=%u channel=%u)", 307 p2p->op_reg_class, p2p->op_channel); 308 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 309 goto fail; 310 } 311 } else if (go && !(dev->flags & P2P_DEV_FORCE_FREQ) && 312 !p2p->cfg->cfg_op_channel) { 313 p2p_dbg(p2p, "Try to reselect channel selection with peer information received; previously selected op_class %u channel %u", 314 p2p->op_reg_class, p2p->op_channel); 315 p2p_reselect_channel(p2p, &intersection); 316 } 317 318 op_freq = p2p_channel_to_freq(p2p->op_reg_class, 319 p2p->op_channel); 320 if (op_freq < 0) { 321 p2p_dbg(p2p, "Unknown operational channel (country=%c%c reg_class=%u channel=%u)", 322 p2p->cfg->country[0], p2p->cfg->country[1], 323 p2p->op_reg_class, p2p->op_channel); 324 status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 325 goto fail; 326 } 327 p2p_dbg(p2p, "Selected operating channel - %d MHz", op_freq); 328 329 if (status == P2P_SC_SUCCESS) { 330 reg_class = p2p->op_reg_class; 331 channel = p2p->op_channel; 332 channels = &intersection; 333 } 334 } 335 336fail: 337 if (go && status == P2P_SC_SUCCESS && !is_zero_ether_addr(group_bssid)) 338 bssid = group_bssid; 339 else 340 bssid = NULL; 341 resp = p2p_build_invitation_resp(p2p, dev, msg.dialog_token, status, 342 bssid, reg_class, channel, channels); 343 344 if (resp == NULL) 345 goto out; 346 347 if (rx_freq > 0) 348 freq = rx_freq; 349 else 350 freq = p2p_channel_to_freq(p2p->cfg->reg_class, 351 p2p->cfg->channel); 352 if (freq < 0) { 353 p2p_dbg(p2p, "Unknown regulatory class/channel"); 354 goto out; 355 } 356 357 /* 358 * Store copy of invitation data to be used when processing TX status 359 * callback for the Acton frame. 360 */ 361 os_memcpy(p2p->inv_sa, sa, ETH_ALEN); 362 if (msg.group_bssid) { 363 os_memcpy(p2p->inv_group_bssid, msg.group_bssid, ETH_ALEN); 364 p2p->inv_group_bssid_ptr = p2p->inv_group_bssid; 365 } else 366 p2p->inv_group_bssid_ptr = NULL; 367 if (msg.group_id) { 368 if (msg.group_id_len - ETH_ALEN <= 32) { 369 os_memcpy(p2p->inv_ssid, msg.group_id + ETH_ALEN, 370 msg.group_id_len - ETH_ALEN); 371 p2p->inv_ssid_len = msg.group_id_len - ETH_ALEN; 372 } 373 os_memcpy(p2p->inv_go_dev_addr, msg.group_id, ETH_ALEN); 374 } else { 375 p2p->inv_ssid_len = 0; 376 os_memset(p2p->inv_go_dev_addr, 0, ETH_ALEN); 377 } 378 p2p->inv_status = status; 379 p2p->inv_op_freq = op_freq; 380 381 p2p->pending_action_state = P2P_PENDING_INVITATION_RESPONSE; 382 if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 383 p2p->cfg->dev_addr, 384 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 385 p2p_dbg(p2p, "Failed to send Action frame"); 386 } 387 388out: 389 wpabuf_free(resp); 390 p2p_parse_free(&msg); 391} 392 393 394void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa, 395 const u8 *data, size_t len) 396{ 397 struct p2p_device *dev; 398 struct p2p_message msg; 399 struct p2p_channels intersection, *channels = NULL; 400 401 p2p_dbg(p2p, "Received Invitation Response from " MACSTR, 402 MAC2STR(sa)); 403 404 dev = p2p_get_device(p2p, sa); 405 if (dev == NULL) { 406 p2p_dbg(p2p, "Ignore Invitation Response from unknown peer " 407 MACSTR, MAC2STR(sa)); 408 return; 409 } 410 411 if (dev != p2p->invite_peer) { 412 p2p_dbg(p2p, "Ignore unexpected Invitation Response from peer " 413 MACSTR, MAC2STR(sa)); 414 return; 415 } 416 417 if (p2p_parse(data, len, &msg)) 418 return; 419 420 if (!msg.status) { 421 p2p_dbg(p2p, "Mandatory Status attribute missing in Invitation Response from " 422 MACSTR, MAC2STR(sa)); 423 p2p_parse_free(&msg); 424 return; 425 } 426 427 if (!msg.channel_list && *msg.status == P2P_SC_SUCCESS) { 428 p2p_dbg(p2p, "Mandatory Channel List attribute missing in Invitation Response from " 429 MACSTR, MAC2STR(sa)); 430#ifdef CONFIG_P2P_STRICT 431 p2p_parse_free(&msg); 432 return; 433#endif /* CONFIG_P2P_STRICT */ 434 /* Try to survive without peer channel list */ 435 channels = &p2p->channels; 436 } else if (!msg.channel_list) { 437 /* Non-success cases are not required to include Channel List */ 438 channels = &p2p->channels; 439 } else if (p2p_peer_channels_check(p2p, &p2p->channels, dev, 440 msg.channel_list, 441 msg.channel_list_len) < 0) { 442 p2p_dbg(p2p, "No common channels found"); 443 p2p_parse_free(&msg); 444 return; 445 } else { 446 p2p_channels_intersect(&p2p->channels, &dev->channels, 447 &intersection); 448 channels = &intersection; 449 } 450 451 if (p2p->cfg->invitation_result) { 452 int peer_oper_freq = 0; 453 int freq = p2p_channel_to_freq(p2p->op_reg_class, 454 p2p->op_channel); 455 if (freq < 0) 456 freq = 0; 457 458 if (msg.operating_channel) { 459 peer_oper_freq = p2p_channel_to_freq( 460 msg.operating_channel[3], 461 msg.operating_channel[4]); 462 if (peer_oper_freq < 0) 463 peer_oper_freq = 0; 464 } 465 466 p2p->cfg->invitation_result(p2p->cfg->cb_ctx, *msg.status, 467 msg.group_bssid, channels, sa, 468 freq, peer_oper_freq); 469 } 470 471 p2p_parse_free(&msg); 472 473 p2p_clear_timeout(p2p); 474 p2p_set_state(p2p, P2P_IDLE); 475 p2p->invite_peer = NULL; 476} 477 478 479int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev, 480 const u8 *go_dev_addr, int dev_pw_id) 481{ 482 struct wpabuf *req; 483 int freq; 484 485 freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 486 if (freq <= 0) 487 freq = dev->oob_go_neg_freq; 488 if (freq <= 0) { 489 p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 490 MACSTR " to send Invitation Request", 491 MAC2STR(dev->info.p2p_device_addr)); 492 return -1; 493 } 494 495 req = p2p_build_invitation_req(p2p, dev, go_dev_addr, dev_pw_id); 496 if (req == NULL) 497 return -1; 498 if (p2p->state != P2P_IDLE) 499 p2p_stop_listen_for_freq(p2p, freq); 500 p2p_dbg(p2p, "Sending Invitation Request"); 501 p2p_set_state(p2p, P2P_INVITE); 502 p2p->pending_action_state = P2P_PENDING_INVITATION_REQUEST; 503 p2p->invite_peer = dev; 504 dev->invitation_reqs++; 505 if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 506 p2p->cfg->dev_addr, dev->info.p2p_device_addr, 507 wpabuf_head(req), wpabuf_len(req), 500) < 0) { 508 p2p_dbg(p2p, "Failed to send Action frame"); 509 /* Use P2P find to recover and retry */ 510 p2p_set_timeout(p2p, 0, 0); 511 } else { 512 dev->flags |= P2P_DEV_WAIT_INV_REQ_ACK; 513 } 514 515 wpabuf_free(req); 516 517 return 0; 518} 519 520 521void p2p_invitation_req_cb(struct p2p_data *p2p, int success) 522{ 523 p2p_dbg(p2p, "Invitation Request TX callback: success=%d", success); 524 525 if (p2p->invite_peer == NULL) { 526 p2p_dbg(p2p, "No pending Invite"); 527 return; 528 } 529 530 if (success) 531 p2p->invite_peer->flags &= ~P2P_DEV_WAIT_INV_REQ_ACK; 532 533 /* 534 * Use P2P find, if needed, to find the other device from its listen 535 * channel. 536 */ 537 p2p_set_state(p2p, P2P_INVITE); 538 p2p_set_timeout(p2p, 0, success ? 500000 : 100000); 539} 540 541 542void p2p_invitation_resp_cb(struct p2p_data *p2p, int success) 543{ 544 p2p_dbg(p2p, "Invitation Response TX callback: success=%d", success); 545 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 546 547 if (!success) 548 p2p_dbg(p2p, "Assume Invitation Response was actually received by the peer even though Ack was not reported"); 549 550 if (p2p->cfg->invitation_received) { 551 p2p->cfg->invitation_received(p2p->cfg->cb_ctx, 552 p2p->inv_sa, 553 p2p->inv_group_bssid_ptr, 554 p2p->inv_ssid, p2p->inv_ssid_len, 555 p2p->inv_go_dev_addr, 556 p2p->inv_status, 557 p2p->inv_op_freq); 558 } 559} 560 561 562int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 563 const u8 *bssid, const u8 *ssid, size_t ssid_len, 564 unsigned int force_freq, const u8 *go_dev_addr, 565 int persistent_group, unsigned int pref_freq, int dev_pw_id) 566{ 567 struct p2p_device *dev; 568 569 p2p_dbg(p2p, "Request to invite peer " MACSTR " role=%d persistent=%d " 570 "force_freq=%u", 571 MAC2STR(peer), role, persistent_group, force_freq); 572 if (bssid) 573 p2p_dbg(p2p, "Invitation for BSSID " MACSTR, MAC2STR(bssid)); 574 if (go_dev_addr) { 575 p2p_dbg(p2p, "Invitation for GO Device Address " MACSTR, 576 MAC2STR(go_dev_addr)); 577 os_memcpy(p2p->invite_go_dev_addr_buf, go_dev_addr, ETH_ALEN); 578 p2p->invite_go_dev_addr = p2p->invite_go_dev_addr_buf; 579 } else 580 p2p->invite_go_dev_addr = NULL; 581 wpa_hexdump_ascii(MSG_DEBUG, "Invitation for SSID", 582 ssid, ssid_len); 583 if (dev_pw_id >= 0) { 584 p2p_dbg(p2p, "Invitation to use Device Password ID %d", 585 dev_pw_id); 586 } 587 p2p->invite_dev_pw_id = dev_pw_id; 588 589 dev = p2p_get_device(p2p, peer); 590 if (dev == NULL || (dev->listen_freq <= 0 && dev->oper_freq <= 0 && 591 dev->oob_go_neg_freq <= 0)) { 592 p2p_dbg(p2p, "Cannot invite unknown P2P Device " MACSTR, 593 MAC2STR(peer)); 594 return -1; 595 } 596 597 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, 598 role != P2P_INVITE_ROLE_CLIENT) < 0) 599 return -1; 600 601 if (persistent_group && role == P2P_INVITE_ROLE_CLIENT && !force_freq && 602 !pref_freq) 603 dev->flags |= P2P_DEV_NO_PREF_CHAN; 604 else 605 dev->flags &= ~P2P_DEV_NO_PREF_CHAN; 606 607 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 608 if (!(dev->info.dev_capab & 609 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 610 p2p_dbg(p2p, "Cannot invite a P2P Device " MACSTR 611 " that is in a group and is not discoverable", 612 MAC2STR(peer)); 613 } 614 /* TODO: use device discoverability request through GO */ 615 } 616 617 dev->invitation_reqs = 0; 618 619 if (p2p->state != P2P_IDLE) 620 p2p_stop_find(p2p); 621 622 p2p->inv_role = role; 623 p2p->inv_bssid_set = bssid != NULL; 624 if (bssid) 625 os_memcpy(p2p->inv_bssid, bssid, ETH_ALEN); 626 os_memcpy(p2p->inv_ssid, ssid, ssid_len); 627 p2p->inv_ssid_len = ssid_len; 628 p2p->inv_persistent = persistent_group; 629 return p2p_invite_send(p2p, dev, go_dev_addr, dev_pw_id); 630} 631