p2p.h revision f7e0a9905988e62e4f70fed8b795722abeab719b
1/* 2 * Wi-Fi Direct - P2P module 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#ifndef P2P_H 10#define P2P_H 11 12/** 13 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 14 */ 15#define P2P_MAX_REG_CLASSES 10 16 17/** 18 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 19 */ 20#define P2P_MAX_REG_CLASS_CHANNELS 20 21 22/** 23 * struct p2p_channels - List of supported channels 24 */ 25struct p2p_channels { 26 /** 27 * struct p2p_reg_class - Supported regulatory class 28 */ 29 struct p2p_reg_class { 30 /** 31 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 32 */ 33 u8 reg_class; 34 35 /** 36 * channel - Supported channels 37 */ 38 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 39 40 /** 41 * channels - Number of channel entries in use 42 */ 43 size_t channels; 44 } reg_class[P2P_MAX_REG_CLASSES]; 45 46 /** 47 * reg_classes - Number of reg_class entries in use 48 */ 49 size_t reg_classes; 50}; 51 52enum p2p_wps_method { 53 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC 54}; 55 56enum p2p_sd_action { 57 SRV_UPDATE, SRV_ADD, SRV_DEL, SRV_FLUSH 58}; 59 60/** 61 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 62 */ 63struct p2p_go_neg_results { 64 /** 65 * status - Negotiation result (Status Code) 66 * 67 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 68 * failed negotiation. 69 */ 70 int status; 71 72 /** 73 * role_go - Whether local end is Group Owner 74 */ 75 int role_go; 76 77 /** 78 * freq - Frequency of the group operational channel in MHz 79 */ 80 int freq; 81 82 int ht40; 83 84 /** 85 * ssid - SSID of the group 86 */ 87 u8 ssid[32]; 88 89 /** 90 * ssid_len - Length of SSID in octets 91 */ 92 size_t ssid_len; 93 94 /** 95 * psk - WPA pre-shared key (256 bits) (GO only) 96 */ 97 u8 psk[32]; 98 99 /** 100 * psk_set - Whether PSK field is configured (GO only) 101 */ 102 int psk_set; 103 104 /** 105 * passphrase - WPA2-Personal passphrase for the group (GO only) 106 */ 107 char passphrase[64]; 108 109 /** 110 * peer_device_addr - P2P Device Address of the peer 111 */ 112 u8 peer_device_addr[ETH_ALEN]; 113 114 /** 115 * peer_interface_addr - P2P Interface Address of the peer 116 */ 117 u8 peer_interface_addr[ETH_ALEN]; 118 119 /** 120 * wps_method - WPS method to be used during provisioning 121 */ 122 enum p2p_wps_method wps_method; 123 124#define P2P_MAX_CHANNELS 50 125 126 /** 127 * freq_list - Zero-terminated list of possible operational channels 128 */ 129 int freq_list[P2P_MAX_CHANNELS]; 130 131 /** 132 * persistent_group - Whether the group should be made persistent 133 * 0 = not persistent 134 * 1 = persistent group without persistent reconnect 135 * 2 = persistent group with persistent reconnect 136 */ 137 int persistent_group; 138 139 /** 140 * peer_config_timeout - Peer configuration timeout (in 10 msec units) 141 */ 142 unsigned int peer_config_timeout; 143}; 144 145struct p2p_data; 146 147enum p2p_scan_type { 148 P2P_SCAN_SOCIAL, 149 P2P_SCAN_FULL, 150 P2P_SCAN_SPECIFIC, 151 P2P_SCAN_SOCIAL_PLUS_ONE 152}; 153 154#define P2P_MAX_WPS_VENDOR_EXT 10 155 156/** 157 * struct p2p_peer_info - P2P peer information 158 */ 159struct p2p_peer_info { 160 /** 161 * p2p_device_addr - P2P Device Address of the peer 162 */ 163 u8 p2p_device_addr[ETH_ALEN]; 164 165 /** 166 * pri_dev_type - Primary Device Type 167 */ 168 u8 pri_dev_type[8]; 169 170 /** 171 * device_name - Device Name (0..32 octets encoded in UTF-8) 172 */ 173 char device_name[33]; 174 175 /** 176 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 177 */ 178 char manufacturer[65]; 179 180 /** 181 * model_name - Model Name (0..32 octets encoded in UTF-8) 182 */ 183 char model_name[33]; 184 185 /** 186 * model_number - Model Number (0..32 octets encoded in UTF-8) 187 */ 188 char model_number[33]; 189 190 /** 191 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 192 */ 193 char serial_number[33]; 194 195 /** 196 * level - Signal level 197 */ 198 int level; 199 200 /** 201 * config_methods - WPS Configuration Methods 202 */ 203 u16 config_methods; 204 205 /** 206 * dev_capab - Device Capabilities 207 */ 208 u8 dev_capab; 209 210 /** 211 * group_capab - Group Capabilities 212 */ 213 u8 group_capab; 214 215 /** 216 * wps_sec_dev_type_list - WPS secondary device type list 217 * 218 * This list includes from 0 to 16 Secondary Device Types as indicated 219 * by wps_sec_dev_type_list_len (8 * number of types). 220 */ 221 u8 wps_sec_dev_type_list[128]; 222 223 /** 224 * wps_sec_dev_type_list_len - Length of secondary device type list 225 */ 226 size_t wps_sec_dev_type_list_len; 227 228 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 229 230 /** 231 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s) 232 */ 233 struct wpabuf *wfd_subelems; 234}; 235 236enum p2p_prov_disc_status { 237 P2P_PROV_DISC_SUCCESS, 238 P2P_PROV_DISC_TIMEOUT, 239 P2P_PROV_DISC_REJECTED, 240 P2P_PROV_DISC_TIMEOUT_JOIN, 241}; 242 243struct p2p_channel { 244 u8 op_class; 245 u8 chan; 246}; 247 248/** 249 * struct p2p_config - P2P configuration 250 * 251 * This configuration is provided to the P2P module during initialization with 252 * p2p_init(). 253 */ 254struct p2p_config { 255 /** 256 * country - Country code to use in P2P operations 257 */ 258 char country[3]; 259 260 /** 261 * reg_class - Regulatory class for own listen channel 262 */ 263 u8 reg_class; 264 265 /** 266 * channel - Own listen channel 267 */ 268 u8 channel; 269 270 /** 271 * Regulatory class for own operational channel 272 */ 273 u8 op_reg_class; 274 275 /** 276 * op_channel - Own operational channel 277 */ 278 u8 op_channel; 279 280 /** 281 * cfg_op_channel - Whether op_channel is hardcoded in configuration 282 */ 283 u8 cfg_op_channel; 284 285 /** 286 * channels - Own supported regulatory classes and channels 287 * 288 * List of supposerted channels per regulatory class. The regulatory 289 * classes are defined in IEEE Std 802.11-2007 Annex J and the 290 * numbering of the clases depends on the configured country code. 291 */ 292 struct p2p_channels channels; 293 294 /** 295 * num_pref_chan - Number of pref_chan entries 296 */ 297 unsigned int num_pref_chan; 298 299 /** 300 * pref_chan - Preferred channels for GO Negotiation 301 */ 302 struct p2p_channel *pref_chan; 303 304 /** 305 * pri_dev_type - Primary Device Type (see WPS) 306 */ 307 u8 pri_dev_type[8]; 308 309 /** 310 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 311 */ 312#define P2P_SEC_DEVICE_TYPES 5 313 314 /** 315 * sec_dev_type - Optional secondary device types 316 */ 317 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 318 319 /** 320 * num_sec_dev_types - Number of sec_dev_type entries 321 */ 322 size_t num_sec_dev_types; 323 324 /** 325 * dev_addr - P2P Device Address 326 */ 327 u8 dev_addr[ETH_ALEN]; 328 329 /** 330 * dev_name - Device Name 331 */ 332 char *dev_name; 333 334 char *manufacturer; 335 char *model_name; 336 char *model_number; 337 char *serial_number; 338 339 u8 uuid[16]; 340 u16 config_methods; 341 342 /** 343 * concurrent_operations - Whether concurrent operations are supported 344 */ 345 int concurrent_operations; 346 347 /** 348 * max_peers - Maximum number of discovered peers to remember 349 * 350 * If more peers are discovered, older entries will be removed to make 351 * room for the new ones. 352 */ 353 size_t max_peers; 354 355 /** 356 * p2p_intra_bss - Intra BSS communication is supported 357 */ 358 int p2p_intra_bss; 359 360 /** 361 * ssid_postfix - Postfix data to add to the SSID 362 * 363 * This data will be added to the end of the SSID after the 364 * DIRECT-<random two octets> prefix. 365 */ 366 u8 ssid_postfix[32 - 9]; 367 368 /** 369 * ssid_postfix_len - Length of the ssid_postfix data 370 */ 371 size_t ssid_postfix_len; 372 373 /** 374 * max_listen - Maximum listen duration in ms 375 */ 376 unsigned int max_listen; 377 378#ifdef ANDROID_P2P 379 enum p2p_concurrency_type { 380 P2P_NON_CONCURRENT, 381 P2P_SINGLE_CHANNEL_CONCURRENT, 382 P2P_MULTI_CHANNEL_CONCURRENT, 383 } p2p_concurrency; 384#endif 385 386 /** 387 * cb_ctx - Context to use with callback functions 388 */ 389 void *cb_ctx; 390 391 /** 392 * debug_print - Debug print 393 * @ctx: Callback context from cb_ctx 394 * @level: Debug verbosity level (MSG_*) 395 * @msg: Debug message 396 */ 397 void (*debug_print)(void *ctx, int level, const char *msg); 398 399 400 /* Callbacks to request lower layer driver operations */ 401 402 /** 403 * p2p_scan - Request a P2P scan/search 404 * @ctx: Callback context from cb_ctx 405 * @type: Scan type 406 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 407 * @num_req_dev_types: Number of requested device types 408 * @req_dev_types: Array containing requested device types 409 * @dev_id: Device ID to search for or %NULL to find all devices 410 * @pw_id: Device Password ID 411 * Returns: 0 on success, -1 on failure 412 * 413 * This callback function is used to request a P2P scan or search 414 * operation to be completed. Type type argument specifies which type 415 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 416 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 417 * indicates that all channels are to be scanned. 418 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 419 * plus one extra channel specified by freq. 420 * 421 * The full scan is used for the initial scan to find group owners from 422 * all. The other types are used during search phase scan of the social 423 * channels (with potential variation if the Listen channel of the 424 * target peer is known or if other channels are scanned in steps). 425 * 426 * The scan results are returned after this call by calling 427 * p2p_scan_res_handler() for each scan result that has a P2P IE and 428 * then calling p2p_scan_res_handled() to indicate that all scan 429 * results have been indicated. 430 */ 431 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 432 unsigned int num_req_dev_types, 433 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 434 435 /** 436 * send_probe_resp - Transmit a Probe Response frame 437 * @ctx: Callback context from cb_ctx 438 * @buf: Probe Response frame (including the header and body) 439 * Returns: 0 on success, -1 on failure 440 * 441 * This function is used to reply to Probe Request frames that were 442 * indicated with a call to p2p_probe_req_rx(). The response is to be 443 * sent on the same channel or to be dropped if the driver is not 444 * anymore listening to Probe Request frames. 445 * 446 * Alternatively, the responsibility for building the Probe Response 447 * frames in Listen state may be in another system component in which 448 * case this function need to be implemented (i.e., the function 449 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 450 * Response frames in such a case are available from the 451 * start_listen() callback. It should be noted that the received Probe 452 * Request frames must be indicated by calling p2p_probe_req_rx() even 453 * if this send_probe_resp() is not used. 454 */ 455 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 456 457 /** 458 * send_action - Transmit an Action frame 459 * @ctx: Callback context from cb_ctx 460 * @freq: Frequency in MHz for the channel on which to transmit 461 * @dst: Destination MAC address (Address 1) 462 * @src: Source MAC address (Address 2) 463 * @bssid: BSSID (Address 3) 464 * @buf: Frame body (starting from Category field) 465 * @len: Length of buf in octets 466 * @wait_time: How many msec to wait for a response frame 467 * Returns: 0 on success, -1 on failure 468 * 469 * The Action frame may not be transmitted immediately and the status 470 * of the transmission must be reported by calling 471 * p2p_send_action_cb() once the frame has either been transmitted or 472 * it has been dropped due to excessive retries or other failure to 473 * transmit. 474 */ 475 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 476 const u8 *src, const u8 *bssid, const u8 *buf, 477 size_t len, unsigned int wait_time); 478 479 /** 480 * send_action_done - Notify that Action frame sequence was completed 481 * @ctx: Callback context from cb_ctx 482 * 483 * This function is called when the Action frame sequence that was 484 * started with send_action() has been completed, i.e., when there is 485 * no need to wait for a response from the destination peer anymore. 486 */ 487 void (*send_action_done)(void *ctx); 488 489 /** 490 * start_listen - Start Listen state 491 * @ctx: Callback context from cb_ctx 492 * @freq: Frequency of the listen channel in MHz 493 * @duration: Duration for the Listen state in milliseconds 494 * @probe_resp_ie: IE(s) to be added to Probe Response frames 495 * Returns: 0 on success, -1 on failure 496 * 497 * This Listen state may not start immediately since the driver may 498 * have other pending operations to complete first. Once the Listen 499 * state has started, p2p_listen_cb() must be called to notify the P2P 500 * module. Once the Listen state is stopped, p2p_listen_end() must be 501 * called to notify the P2P module that the driver is not in the Listen 502 * state anymore. 503 * 504 * If the send_probe_resp() is not used for generating the response, 505 * the IEs from probe_resp_ie need to be added to the end of the Probe 506 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 507 * information can be ignored. 508 */ 509 int (*start_listen)(void *ctx, unsigned int freq, 510 unsigned int duration, 511 const struct wpabuf *probe_resp_ie); 512 /** 513 * stop_listen - Stop Listen state 514 * @ctx: Callback context from cb_ctx 515 * 516 * This callback can be used to stop a Listen state operation that was 517 * previously requested with start_listen(). 518 */ 519 void (*stop_listen)(void *ctx); 520 521 /** 522 * get_noa - Get current Notice of Absence attribute payload 523 * @ctx: Callback context from cb_ctx 524 * @interface_addr: P2P Interface Address of the GO 525 * @buf: Buffer for returning NoA 526 * @buf_len: Buffer length in octets 527 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 528 * advertized, or -1 on failure 529 * 530 * This function is used to fetch the current Notice of Absence 531 * attribute value from GO. 532 */ 533 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 534 size_t buf_len); 535 536 /* Callbacks to notify events to upper layer management entity */ 537 538 /** 539 * dev_found - Notification of a found P2P Device 540 * @ctx: Callback context from cb_ctx 541 * @addr: Source address of the message triggering this notification 542 * @info: P2P peer information 543 * @new_device: Inform if the peer is newly found 544 * 545 * This callback is used to notify that a new P2P Device has been 546 * found. This may happen, e.g., during Search state based on scan 547 * results or during Listen state based on receive Probe Request and 548 * Group Owner Negotiation Request. 549 */ 550 void (*dev_found)(void *ctx, const u8 *addr, 551 const struct p2p_peer_info *info, 552 int new_device); 553 554 /** 555 * dev_lost - Notification of a lost P2P Device 556 * @ctx: Callback context from cb_ctx 557 * @dev_addr: P2P Device Address of the lost P2P Device 558 * 559 * This callback is used to notify that a P2P Device has been deleted. 560 */ 561 void (*dev_lost)(void *ctx, const u8 *dev_addr); 562 563 /** 564 * find_stopped - Notification of a p2p_find operation stopping 565 * @ctx: Callback context from cb_ctx 566 */ 567 void (*find_stopped)(void *ctx); 568 569 /** 570 * go_neg_req_rx - Notification of a receive GO Negotiation Request 571 * @ctx: Callback context from cb_ctx 572 * @src: Source address of the message triggering this notification 573 * @dev_passwd_id: WPS Device Password ID 574 * 575 * This callback is used to notify that a P2P Device is requesting 576 * group owner negotiation with us, but we do not have all the 577 * necessary information to start GO Negotiation. This indicates that 578 * the local user has not authorized the connection yet by providing a 579 * PIN or PBC button press. This information can be provided with a 580 * call to p2p_connect(). 581 */ 582 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 583 584 /** 585 * go_neg_completed - Notification of GO Negotiation results 586 * @ctx: Callback context from cb_ctx 587 * @res: GO Negotiation results 588 * 589 * This callback is used to notify that Group Owner Negotiation has 590 * been completed. Non-zero struct p2p_go_neg_results::status indicates 591 * failed negotiation. In case of success, this function is responsible 592 * for creating a new group interface (or using the existing interface 593 * depending on driver features), setting up the group interface in 594 * proper mode based on struct p2p_go_neg_results::role_go and 595 * initializing WPS provisioning either as a Registrar (if GO) or as an 596 * Enrollee. Successful WPS provisioning must be indicated by calling 597 * p2p_wps_success_cb(). The callee is responsible for timing out group 598 * formation if WPS provisioning cannot be completed successfully 599 * within 15 seconds. 600 */ 601 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 602 603 /** 604 * sd_request - Callback on Service Discovery Request 605 * @ctx: Callback context from cb_ctx 606 * @freq: Frequency (in MHz) of the channel 607 * @sa: Source address of the request 608 * @dialog_token: Dialog token 609 * @update_indic: Service Update Indicator from the source of request 610 * @tlvs: P2P Service Request TLV(s) 611 * @tlvs_len: Length of tlvs buffer in octets 612 * 613 * This callback is used to indicate reception of a service discovery 614 * request. Response to the query must be indicated by calling 615 * p2p_sd_response() with the context information from the arguments to 616 * this callback function. 617 * 618 * This callback handler can be set to %NULL to indicate that service 619 * discovery is not supported. 620 */ 621 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 622 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 623 624 /** 625 * sd_response - Callback on Service Discovery Response 626 * @ctx: Callback context from cb_ctx 627 * @sa: Source address of the request 628 * @update_indic: Service Update Indicator from the source of response 629 * @tlvs: P2P Service Response TLV(s) 630 * @tlvs_len: Length of tlvs buffer in octets 631 * 632 * This callback is used to indicate reception of a service discovery 633 * response. This callback handler can be set to %NULL if no service 634 * discovery requests are used. The information provided with this call 635 * is replies to the queries scheduled with p2p_sd_request(). 636 */ 637 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 638 const u8 *tlvs, size_t tlvs_len); 639 640 /** 641 * prov_disc_req - Callback on Provisiong Discovery Request 642 * @ctx: Callback context from cb_ctx 643 * @peer: Source address of the request 644 * @config_methods: Requested WPS Config Method 645 * @dev_addr: P2P Device Address of the found P2P Device 646 * @pri_dev_type: Primary Device Type 647 * @dev_name: Device Name 648 * @supp_config_methods: Supported configuration Methods 649 * @dev_capab: Device Capabilities 650 * @group_capab: Group Capabilities 651 * @group_id: P2P Group ID (or %NULL if not included) 652 * @group_id_len: Length of P2P Group ID 653 * 654 * This callback is used to indicate reception of a Provision Discovery 655 * Request frame that the P2P module accepted. 656 */ 657 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 658 const u8 *dev_addr, const u8 *pri_dev_type, 659 const char *dev_name, u16 supp_config_methods, 660 u8 dev_capab, u8 group_capab, 661 const u8 *group_id, size_t group_id_len); 662 663 /** 664 * prov_disc_resp - Callback on Provisiong Discovery Response 665 * @ctx: Callback context from cb_ctx 666 * @peer: Source address of the response 667 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 668 * 669 * This callback is used to indicate reception of a Provision Discovery 670 * Response frame for a pending request scheduled with 671 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 672 * provision discovery is not used. 673 */ 674 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 675 676 /** 677 * prov_disc_fail - Callback on Provision Discovery failure 678 * @ctx: Callback context from cb_ctx 679 * @peer: Source address of the response 680 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 681 * 682 * This callback is used to indicate either a failure or no response 683 * to an earlier provision discovery request. 684 * 685 * This callback handler can be set to %NULL if provision discovery 686 * is not used or failures do not need to be indicated. 687 */ 688 void (*prov_disc_fail)(void *ctx, const u8 *peer, 689 enum p2p_prov_disc_status status); 690 691 /** 692 * invitation_process - Optional callback for processing Invitations 693 * @ctx: Callback context from cb_ctx 694 * @sa: Source address of the Invitation Request 695 * @bssid: P2P Group BSSID from the request or %NULL if not included 696 * @go_dev_addr: GO Device Address from P2P Group ID 697 * @ssid: SSID from P2P Group ID 698 * @ssid_len: Length of ssid buffer in octets 699 * @go: Variable for returning whether the local end is GO in the group 700 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 701 * @force_freq: Variable for returning forced frequency for the group 702 * @persistent_group: Whether this is an invitation to reinvoke a 703 * persistent group (instead of invitation to join an active 704 * group) 705 * @channels: Available operating channels for the group 706 * Returns: Status code (P2P_SC_*) 707 * 708 * This optional callback can be used to implement persistent reconnect 709 * by allowing automatic restarting of persistent groups without user 710 * interaction. If this callback is not implemented (i.e., is %NULL), 711 * the received Invitation Request frames are replied with 712 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 713 * invitation_result() callback. 714 * 715 * If the requested parameters are acceptable and the group is known, 716 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 717 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 718 * can be returned if there is not enough data to provide immediate 719 * response, i.e., if some sort of user interaction is needed. The 720 * invitation_received() callback will be called in that case 721 * immediately after this call. 722 */ 723 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 724 const u8 *go_dev_addr, const u8 *ssid, 725 size_t ssid_len, int *go, u8 *group_bssid, 726 int *force_freq, int persistent_group, 727 const struct p2p_channels *channels); 728 729 /** 730 * invitation_received - Callback on Invitation Request RX 731 * @ctx: Callback context from cb_ctx 732 * @sa: Source address of the Invitation Request 733 * @bssid: P2P Group BSSID or %NULL if not received 734 * @ssid: SSID of the group 735 * @ssid_len: Length of ssid in octets 736 * @go_dev_addr: GO Device Address 737 * @status: Response Status 738 * @op_freq: Operational frequency for the group 739 * 740 * This callback is used to indicate sending of an Invitation Response 741 * for a received Invitation Request. If status == 0 (success), the 742 * upper layer code is responsible for starting the group. status == 1 743 * indicates need to get user authorization for the group. Other status 744 * values indicate that the invitation request was rejected. 745 */ 746 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 747 const u8 *ssid, size_t ssid_len, 748 const u8 *go_dev_addr, u8 status, 749 int op_freq); 750 751 /** 752 * invitation_result - Callback on Invitation result 753 * @ctx: Callback context from cb_ctx 754 * @status: Negotiation result (Status Code) 755 * @bssid: P2P Group BSSID or %NULL if not received 756 * @channels: Available operating channels for the group 757 * @addr: Peer address 758 * 759 * This callback is used to indicate result of an Invitation procedure 760 * started with a call to p2p_invite(). The indicated status code is 761 * the value received from the peer in Invitation Response with 0 762 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 763 * local failure in transmitting the Invitation Request. 764 */ 765 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 766 const struct p2p_channels *channels, 767 const u8 *addr); 768 769 /** 770 * go_connected - Check whether we are connected to a GO 771 * @ctx: Callback context from cb_ctx 772 * @dev_addr: P2P Device Address of a GO 773 * Returns: 1 if we are connected as a P2P client to the specified GO 774 * or 0 if not. 775 */ 776 int (*go_connected)(void *ctx, const u8 *dev_addr); 777}; 778 779 780/* P2P module initialization/deinitialization */ 781 782/** 783 * p2p_init - Initialize P2P module 784 * @cfg: P2P module configuration 785 * Returns: Pointer to private data or %NULL on failure 786 * 787 * This function is used to initialize global P2P module context (one per 788 * device). The P2P module will keep a copy of the configuration data, so the 789 * caller does not need to maintain this structure. However, the callback 790 * functions and the context parameters to them must be kept available until 791 * the P2P module is deinitialized with p2p_deinit(). 792 */ 793struct p2p_data * p2p_init(const struct p2p_config *cfg); 794 795/** 796 * p2p_deinit - Deinitialize P2P module 797 * @p2p: P2P module context from p2p_init() 798 */ 799void p2p_deinit(struct p2p_data *p2p); 800 801/** 802 * p2p_flush - Flush P2P module state 803 * @p2p: P2P module context from p2p_init() 804 * 805 * This command removes the P2P module state like peer device entries. 806 */ 807void p2p_flush(struct p2p_data *p2p); 808 809/** 810 * p2p_unauthorize - Unauthorize the specified peer device 811 * @p2p: P2P module context from p2p_init() 812 * @addr: P2P peer entry to be unauthorized 813 * Returns: 0 on success, -1 on failure 814 * 815 * This command removes any connection authorization from the specified P2P 816 * peer device address. This can be used, e.g., to cancel effect of a previous 817 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 818 * GO Negotiation. 819 */ 820int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 821 822/** 823 * p2p_set_dev_name - Set device name 824 * @p2p: P2P module context from p2p_init() 825 * Returns: 0 on success, -1 on failure 826 * 827 * This function can be used to update the P2P module configuration with 828 * information that was not available at the time of the p2p_init() call. 829 */ 830int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 831 832int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 833int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 834int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 835int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 836 837void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 838void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 839 840/** 841 * p2p_set_pri_dev_type - Set primary device type 842 * @p2p: P2P module context from p2p_init() 843 * Returns: 0 on success, -1 on failure 844 * 845 * This function can be used to update the P2P module configuration with 846 * information that was not available at the time of the p2p_init() call. 847 */ 848int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 849 850/** 851 * p2p_set_sec_dev_types - Set secondary device types 852 * @p2p: P2P module context from p2p_init() 853 * Returns: 0 on success, -1 on failure 854 * 855 * This function can be used to update the P2P module configuration with 856 * information that was not available at the time of the p2p_init() call. 857 */ 858int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 859 size_t num_dev_types); 860 861int p2p_set_country(struct p2p_data *p2p, const char *country); 862 863 864/* Commands from upper layer management entity */ 865 866enum p2p_discovery_type { 867 P2P_FIND_START_WITH_FULL, 868 P2P_FIND_ONLY_SOCIAL, 869 P2P_FIND_PROGRESSIVE 870}; 871 872/** 873 * p2p_find - Start P2P Find (Device Discovery) 874 * @p2p: P2P module context from p2p_init() 875 * @timeout: Timeout for find operation in seconds or 0 for no timeout 876 * @type: Device Discovery type 877 * @num_req_dev_types: Number of requested device types 878 * @req_dev_types: Requested device types array, must be an array 879 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 880 * requested device types. 881 * @dev_id: Device ID to search for or %NULL to find all devices 882 * @search_delay: Extra delay in milliseconds between search iterations 883 * Returns: 0 on success, -1 on failure 884 */ 885int p2p_find(struct p2p_data *p2p, unsigned int timeout, 886 enum p2p_discovery_type type, 887 unsigned int num_req_dev_types, const u8 *req_dev_types, 888 const u8 *dev_id, unsigned int search_delay); 889 890/** 891 * p2p_stop_find - Stop P2P Find (Device Discovery) 892 * @p2p: P2P module context from p2p_init() 893 */ 894void p2p_stop_find(struct p2p_data *p2p); 895 896/** 897 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 898 * @p2p: P2P module context from p2p_init() 899 * @freq: Frequency in MHz for next operation 900 * 901 * This is like p2p_stop_find(), but Listen state is not stopped if we are 902 * already on the same frequency. 903 */ 904void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 905 906/** 907 * p2p_listen - Start P2P Listen state for specified duration 908 * @p2p: P2P module context from p2p_init() 909 * @timeout: Listen state duration in milliseconds 910 * Returns: 0 on success, -1 on failure 911 * 912 * This function can be used to request the P2P module to keep the device 913 * discoverable on the listen channel for an extended set of time. At least in 914 * its current form, this is mainly used for testing purposes and may not be of 915 * much use for normal P2P operations. 916 */ 917int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 918 919/** 920 * p2p_connect - Start P2P group formation (GO negotiation) 921 * @p2p: P2P module context from p2p_init() 922 * @peer_addr: MAC address of the peer P2P client 923 * @wps_method: WPS method to be used in provisioning 924 * @go_intent: Local GO intent value (1..15) 925 * @own_interface_addr: Intended interface address to use with the group 926 * @force_freq: The only allowed channel frequency in MHz or 0 927 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 928 * persistent group without persistent reconnect, 2 = persistent group with 929 * persistent reconnect) 930 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 931 * a new SSID 932 * @force_ssid_len: Length of $force_ssid buffer 933 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 934 * Negotiation as an interoperability workaround when initiating group 935 * formation 936 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 937 * force_freq == 0) 938 * Returns: 0 on success, -1 on failure 939 */ 940int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 941 enum p2p_wps_method wps_method, 942 int go_intent, const u8 *own_interface_addr, 943 unsigned int force_freq, int persistent_group, 944 const u8 *force_ssid, size_t force_ssid_len, 945 int pd_before_go_neg, unsigned int pref_freq); 946 947/** 948 * p2p_authorize - Authorize P2P group formation (GO negotiation) 949 * @p2p: P2P module context from p2p_init() 950 * @peer_addr: MAC address of the peer P2P client 951 * @wps_method: WPS method to be used in provisioning 952 * @go_intent: Local GO intent value (1..15) 953 * @own_interface_addr: Intended interface address to use with the group 954 * @force_freq: The only allowed channel frequency in MHz or 0 955 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 956 * persistent group without persistent reconnect, 2 = persistent group with 957 * persistent reconnect) 958 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 959 * a new SSID 960 * @force_ssid_len: Length of $force_ssid buffer 961 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 962 * force_freq == 0) 963 * Returns: 0 on success, -1 on failure 964 * 965 * This is like p2p_connect(), but the actual group negotiation is not 966 * initiated automatically, i.e., the other end is expected to do that. 967 */ 968int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 969 enum p2p_wps_method wps_method, 970 int go_intent, const u8 *own_interface_addr, 971 unsigned int force_freq, int persistent_group, 972 const u8 *force_ssid, size_t force_ssid_len, 973 unsigned int pref_freq); 974 975/** 976 * p2p_reject - Reject peer device (explicitly block connection attempts) 977 * @p2p: P2P module context from p2p_init() 978 * @peer_addr: MAC address of the peer P2P client 979 * Returns: 0 on success, -1 on failure 980 */ 981int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 982 983/** 984 * p2p_prov_disc_req - Send Provision Discovery Request 985 * @p2p: P2P module context from p2p_init() 986 * @peer_addr: MAC address of the peer P2P client 987 * @config_methods: WPS Config Methods value (only one bit set) 988 * @join: Whether this is used by a client joining an active group 989 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 990 * @user_initiated_pd: Flag to indicate if initiated by user or not 991 * Returns: 0 on success, -1 on failure 992 * 993 * This function can be used to request a discovered P2P peer to display a PIN 994 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 995 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 996 * is transmitted once immediately and if no response is received, the frame 997 * will be sent again whenever the target device is discovered during device 998 * dsicovery (start with a p2p_find() call). Response from the peer is 999 * indicated with the p2p_config::prov_disc_resp() callback. 1000 */ 1001int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1002 u16 config_methods, int join, int force_freq, 1003 int user_initiated_pd); 1004 1005/** 1006 * p2p_sd_request - Schedule a service discovery query 1007 * @p2p: P2P module context from p2p_init() 1008 * @dst: Destination peer or %NULL to apply for all peers 1009 * @tlvs: P2P Service Query TLV(s) 1010 * Returns: Reference to the query or %NULL on failure 1011 * 1012 * Response to the query is indicated with the p2p_config::sd_response() 1013 * callback. 1014 */ 1015void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1016 const struct wpabuf *tlvs); 1017 1018#ifdef CONFIG_WIFI_DISPLAY 1019void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1020 const struct wpabuf *tlvs); 1021#endif /* CONFIG_WIFI_DISPLAY */ 1022 1023/** 1024 * p2p_sd_cancel_request - Cancel a pending service discovery query 1025 * @p2p: P2P module context from p2p_init() 1026 * @req: Query reference from p2p_sd_request() 1027 * Returns: 0 if request for cancelled; -1 if not found 1028 */ 1029int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1030 1031/** 1032 * p2p_sd_response - Send response to a service discovery query 1033 * @p2p: P2P module context from p2p_init() 1034 * @freq: Frequency from p2p_config::sd_request() callback 1035 * @dst: Destination address from p2p_config::sd_request() callback 1036 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1037 * @resp_tlvs: P2P Service Response TLV(s) 1038 * 1039 * This function is called as a response to the request indicated with 1040 * p2p_config::sd_request() callback. 1041 */ 1042void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1043 u8 dialog_token, const struct wpabuf *resp_tlvs); 1044 1045/** 1046 * p2p_sd_service_update - Indicate a change in local services 1047 * @p2p: P2P module context from p2p_init() 1048 * 1049 * This function needs to be called whenever there is a change in availability 1050 * of the local services. This will increment the Service Update Indicator 1051 * value which will be used in SD Request and Response frames. 1052 */ 1053#ifdef ANDROID_P2P 1054void p2p_sd_service_update(struct p2p_data *p2p, int action); 1055#else 1056void p2p_sd_service_update(struct p2p_data *p2p); 1057#endif 1058 1059 1060enum p2p_invite_role { 1061 P2P_INVITE_ROLE_GO, 1062 P2P_INVITE_ROLE_ACTIVE_GO, 1063 P2P_INVITE_ROLE_CLIENT 1064}; 1065 1066/** 1067 * p2p_invite - Invite a P2P Device into a group 1068 * @p2p: P2P module context from p2p_init() 1069 * @peer: Device Address of the peer P2P Device 1070 * @role: Local role in the group 1071 * @bssid: Group BSSID or %NULL if not known 1072 * @ssid: Group SSID 1073 * @ssid_len: Length of ssid in octets 1074 * @force_freq: The only allowed channel frequency in MHz or 0 1075 * @go_dev_addr: Forced GO Device Address or %NULL if none 1076 * @persistent_group: Whether this is to reinvoke a persistent group 1077 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1078 * force_freq == 0) 1079 * Returns: 0 on success, -1 on failure 1080 */ 1081int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1082 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1083 unsigned int force_freq, const u8 *go_dev_addr, 1084 int persistent_group, unsigned int pref_freq); 1085 1086/** 1087 * p2p_presence_req - Request GO presence 1088 * @p2p: P2P module context from p2p_init() 1089 * @go_interface_addr: GO P2P Interface Address 1090 * @own_interface_addr: Own P2P Interface Address for this group 1091 * @freq: Group operating frequence (in MHz) 1092 * @duration1: Preferred presence duration in microseconds 1093 * @interval1: Preferred presence interval in microseconds 1094 * @duration2: Acceptable presence duration in microseconds 1095 * @interval2: Acceptable presence interval in microseconds 1096 * Returns: 0 on success, -1 on failure 1097 * 1098 * If both duration and interval values are zero, the parameter pair is not 1099 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1100 */ 1101int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1102 const u8 *own_interface_addr, unsigned int freq, 1103 u32 duration1, u32 interval1, u32 duration2, 1104 u32 interval2); 1105 1106/** 1107 * p2p_ext_listen - Set Extended Listen Timing 1108 * @p2p: P2P module context from p2p_init() 1109 * @freq: Group operating frequence (in MHz) 1110 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1111 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1112 * Returns: 0 on success, -1 on failure 1113 * 1114 * This function can be used to enable or disable (period = interval = 0) 1115 * Extended Listen Timing. When enabled, the P2P Device will become 1116 * discoverable (go into Listen State) every @interval milliseconds for at 1117 * least @period milliseconds. 1118 */ 1119int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1120 unsigned int interval); 1121 1122/* Event notifications from upper layer management operations */ 1123 1124/** 1125 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1126 * @p2p: P2P module context from p2p_init() 1127 * @mac_addr: Peer address 1128 * 1129 * This function is used to report successfully completed WPS provisioning 1130 * during group formation in both GO/Registrar and client/Enrollee roles. 1131 */ 1132void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1133 1134/** 1135 * p2p_group_formation_failed - Report failed WPS provisioning 1136 * @p2p: P2P module context from p2p_init() 1137 * 1138 * This function is used to report failed group formation. This can happen 1139 * either due to failed WPS provisioning or due to 15 second timeout during 1140 * the provisioning phase. 1141 */ 1142void p2p_group_formation_failed(struct p2p_data *p2p); 1143 1144/** 1145 * p2p_get_provisioning_info - Get any stored provisioning info 1146 * @p2p: P2P module context from p2p_init() 1147 * @addr: Peer P2P Device Address 1148 * Returns: WPS provisioning information (WPS config method) or 0 if no 1149 * information is available 1150 * 1151 * This function is used to retrieve stored WPS provisioning info for the given 1152 * peer. 1153 */ 1154u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1155 1156/** 1157 * p2p_clear_provisioning_info - Clear any stored provisioning info 1158 * @p2p: P2P module context from p2p_init() 1159 * @iface_addr: Peer P2P Device Address 1160 * 1161 * This function is used to clear stored WPS provisioning info for the given 1162 * peer. 1163 */ 1164void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1165 1166 1167/* Event notifications from lower layer driver operations */ 1168 1169/** 1170 * enum p2p_probe_req_status 1171 * 1172 * @P2P_PREQ_MALFORMED: frame was not well-formed 1173 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1174 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1175 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1176 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1177 */ 1178enum p2p_probe_req_status { 1179 P2P_PREQ_MALFORMED, 1180 P2P_PREQ_NOT_LISTEN, 1181 P2P_PREQ_NOT_P2P, 1182 P2P_PREQ_NOT_PROCESSED, 1183 P2P_PREQ_PROCESSED 1184}; 1185 1186/** 1187 * p2p_probe_req_rx - Report reception of a Probe Request frame 1188 * @p2p: P2P module context from p2p_init() 1189 * @addr: Source MAC address 1190 * @dst: Destination MAC address if available or %NULL 1191 * @bssid: BSSID if available or %NULL 1192 * @ie: Information elements from the Probe Request frame body 1193 * @ie_len: Length of ie buffer in octets 1194 * Returns: value indicating the type and status of the probe request 1195 */ 1196enum p2p_probe_req_status 1197p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1198 const u8 *bssid, const u8 *ie, size_t ie_len); 1199 1200/** 1201 * p2p_rx_action - Report received Action frame 1202 * @p2p: P2P module context from p2p_init() 1203 * @da: Destination address of the received Action frame 1204 * @sa: Source address of the received Action frame 1205 * @bssid: Address 3 of the received Action frame 1206 * @category: Category of the received Action frame 1207 * @data: Action frame body after the Category field 1208 * @len: Length of the data buffer in octets 1209 * @freq: Frequency (in MHz) on which the frame was received 1210 */ 1211void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1212 const u8 *bssid, u8 category, 1213 const u8 *data, size_t len, int freq); 1214 1215/** 1216 * p2p_scan_res_handler - Indicate a P2P scan results 1217 * @p2p: P2P module context from p2p_init() 1218 * @bssid: BSSID of the scan result 1219 * @freq: Frequency of the channel on which the device was found in MHz 1220 * @rx_time: Time when the result was received 1221 * @level: Signal level (signal strength of the received Beacon/Probe Response 1222 * frame) 1223 * @ies: Pointer to IEs from the scan result 1224 * @ies_len: Length of the ies buffer 1225 * Returns: 0 to continue or 1 to stop scan result indication 1226 * 1227 * This function is called to indicate a scan result entry with P2P IE from a 1228 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1229 * the actual scan process (i.e., whenever a new device is found) or as a 1230 * sequence of calls after the full scan has been completed. The former option 1231 * can result in optimized operations, but may not be supported by all 1232 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1233 * but it is recommended to include all IEs received from the device. The 1234 * caller does not need to check that the IEs contain a P2P IE before calling 1235 * this function since frames will be filtered internally if needed. 1236 * 1237 * This function will return 1 if it wants to stop scan result iteration (and 1238 * scan in general if it is still in progress). This is used to allow faster 1239 * start of a pending operation, e.g., to start a pending GO negotiation. 1240 */ 1241int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1242 struct os_time *rx_time, int level, const u8 *ies, 1243 size_t ies_len); 1244 1245/** 1246 * p2p_scan_res_handled - Indicate end of scan results 1247 * @p2p: P2P module context from p2p_init() 1248 * 1249 * This function is called to indicate that all P2P scan results from a scan 1250 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1251 * function must be called as a response to successful 1252 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1253 * calls stopped iteration. 1254 */ 1255void p2p_scan_res_handled(struct p2p_data *p2p); 1256 1257enum p2p_send_action_result { 1258 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1259 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1260 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1261}; 1262 1263/** 1264 * p2p_send_action_cb - Notify TX status of an Action frame 1265 * @p2p: P2P module context from p2p_init() 1266 * @freq: Channel frequency in MHz 1267 * @dst: Destination MAC address (Address 1) 1268 * @src: Source MAC address (Address 2) 1269 * @bssid: BSSID (Address 3) 1270 * @result: Result of the transmission attempt 1271 * 1272 * This function is used to indicate the result of an Action frame transmission 1273 * that was requested with struct p2p_config::send_action() callback. 1274 */ 1275void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1276 const u8 *src, const u8 *bssid, 1277 enum p2p_send_action_result result); 1278 1279/** 1280 * p2p_listen_cb - Indicate the start of a requested Listen state 1281 * @p2p: P2P module context from p2p_init() 1282 * @freq: Listen channel frequency in MHz 1283 * @duration: Duration for the Listen state in milliseconds 1284 * 1285 * This function is used to indicate that a Listen state requested with 1286 * struct p2p_config::start_listen() callback has started. 1287 */ 1288void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1289 unsigned int duration); 1290 1291/** 1292 * p2p_listen_end - Indicate the end of a requested Listen state 1293 * @p2p: P2P module context from p2p_init() 1294 * @freq: Listen channel frequency in MHz 1295 * Returns: 0 if no operations were started, 1 if an operation was started 1296 * 1297 * This function is used to indicate that a Listen state requested with 1298 * struct p2p_config::start_listen() callback has ended. 1299 */ 1300int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1301 1302void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1303 const u8 *ie, size_t ie_len); 1304 1305void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1306 const u8 *ie, size_t ie_len); 1307 1308 1309/* Per-group P2P state for GO */ 1310 1311struct p2p_group; 1312 1313/** 1314 * struct p2p_group_config - P2P group configuration 1315 * 1316 * This configuration is provided to the P2P module during initialization of 1317 * the per-group information with p2p_group_init(). 1318 */ 1319struct p2p_group_config { 1320 /** 1321 * persistent_group - Whether the group is persistent 1322 * 0 = not a persistent group 1323 * 1 = persistent group without persistent reconnect 1324 * 2 = persistent group with persistent reconnect 1325 */ 1326 int persistent_group; 1327 1328 /** 1329 * interface_addr - P2P Interface Address of the group 1330 */ 1331 u8 interface_addr[ETH_ALEN]; 1332 1333 /** 1334 * max_clients - Maximum number of clients in the group 1335 */ 1336 unsigned int max_clients; 1337 1338 /** 1339 * ssid - Group SSID 1340 */ 1341 u8 ssid[32]; 1342 1343 /** 1344 * ssid_len - Length of SSID 1345 */ 1346 size_t ssid_len; 1347 1348 /** 1349 * cb_ctx - Context to use with callback functions 1350 */ 1351 void *cb_ctx; 1352 1353 /** 1354 * ie_update - Notification of IE update 1355 * @ctx: Callback context from cb_ctx 1356 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1357 * @proberesp_ies: P2P Ie for Probe Response frames 1358 * 1359 * P2P module uses this callback function to notify whenever the P2P IE 1360 * in Beacon or Probe Response frames should be updated based on group 1361 * events. 1362 * 1363 * The callee is responsible for freeing the returned buffer(s) with 1364 * wpabuf_free(). 1365 */ 1366 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1367 struct wpabuf *proberesp_ies); 1368 1369 /** 1370 * idle_update - Notification of changes in group idle state 1371 * @ctx: Callback context from cb_ctx 1372 * @idle: Whether the group is idle (no associated stations) 1373 */ 1374 void (*idle_update)(void *ctx, int idle); 1375}; 1376 1377/** 1378 * p2p_group_init - Initialize P2P group 1379 * @p2p: P2P module context from p2p_init() 1380 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1381 * Returns: Pointer to private data or %NULL on failure 1382 * 1383 * This function is used to initialize per-group P2P module context. Currently, 1384 * this is only used to manage GO functionality and P2P clients do not need to 1385 * create an instance of this per-group information. 1386 */ 1387struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1388 struct p2p_group_config *config); 1389 1390/** 1391 * p2p_group_deinit - Deinitialize P2P group 1392 * @group: P2P group context from p2p_group_init() 1393 */ 1394void p2p_group_deinit(struct p2p_group *group); 1395 1396/** 1397 * p2p_group_notif_assoc - Notification of P2P client association with GO 1398 * @group: P2P group context from p2p_group_init() 1399 * @addr: Interface address of the P2P client 1400 * @ie: IEs from the (Re)association Request frame 1401 * @len: Length of the ie buffer in octets 1402 * Returns: 0 on success, -1 on failure 1403 */ 1404int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1405 const u8 *ie, size_t len); 1406 1407/** 1408 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1409 * @group: P2P group context from p2p_group_init() 1410 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1411 * Returns: P2P IE for (Re)association Response or %NULL on failure 1412 * 1413 * The caller is responsible for freeing the returned buffer with 1414 * wpabuf_free(). 1415 */ 1416struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1417 1418/** 1419 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1420 * @group: P2P group context from p2p_group_init() 1421 * @addr: Interface address of the P2P client 1422 */ 1423void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1424 1425/** 1426 * p2p_group_notif_formation_done - Notification of completed group formation 1427 * @group: P2P group context from p2p_group_init() 1428 */ 1429void p2p_group_notif_formation_done(struct p2p_group *group); 1430 1431/** 1432 * p2p_group_notif_noa - Notification of NoA change 1433 * @group: P2P group context from p2p_group_init() 1434 * @noa: Notice of Absence attribute payload, %NULL if none 1435 * @noa_len: Length of noa buffer in octets 1436 * Returns: 0 on success, -1 on failure 1437 * 1438 * Notify the P2P group management about a new NoA contents. This will be 1439 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1440 * the group information. 1441 */ 1442int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1443 size_t noa_len); 1444 1445/** 1446 * p2p_group_match_dev_type - Match device types in group with requested type 1447 * @group: P2P group context from p2p_group_init() 1448 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1449 * Returns: 1 on match, 0 on mismatch 1450 * 1451 * This function can be used to match the Requested Device Type attribute in 1452 * WPS IE with the device types of a group member for deciding whether a GO 1453 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1454 * is not requested any specific device type. 1455 */ 1456int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1457 1458/** 1459 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1460 */ 1461int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1462 1463/** 1464 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1465 * @group: P2P group context from p2p_group_init() 1466 * Returns: 0 on success (frame scheduled); -1 if client was not found 1467 */ 1468int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1469 const u8 *searching_dev, int rx_freq); 1470 1471 1472/* Generic helper functions */ 1473 1474/** 1475 * p2p_ie_text - Build text format description of P2P IE 1476 * @p2p_ie: P2P IE 1477 * @buf: Buffer for returning text 1478 * @end: Pointer to the end of the buf area 1479 * Returns: Number of octets written to the buffer or -1 on failure 1480 * 1481 * This function can be used to parse P2P IE contents into text format 1482 * field=value lines. 1483 */ 1484int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1485 1486/** 1487 * p2p_scan_result_text - Build text format description of P2P IE 1488 * @ies: Information elements from scan results 1489 * @ies_len: ies buffer length in octets 1490 * @buf: Buffer for returning text 1491 * @end: Pointer to the end of the buf area 1492 * Returns: Number of octets written to the buffer or -1 on failure 1493 * 1494 * This function can be used to parse P2P IE contents into text format 1495 * field=value lines. 1496 */ 1497int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1498 1499/** 1500 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1501 * P2P IE 1502 * @p2p_ie: P2P IE 1503 * @dev_addr: Buffer for returning P2P Device Address 1504 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1505 */ 1506int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1507 1508/** 1509 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1510 * @ies: Information elements from scan results 1511 * @ies_len: ies buffer length in octets 1512 * @dev_addr: Buffer for returning P2P Device Address 1513 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1514 */ 1515int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1516 1517/** 1518 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1519 * @p2p: P2P module context from p2p_init() 1520 * @bssid: BSSID 1521 * @buf: Buffer for writing the P2P IE 1522 * @len: Maximum buf length in octets 1523 * @p2p_group: Whether this is for association with a P2P GO 1524 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1525 * Returns: Number of octets written into buf or -1 on failure 1526 */ 1527int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1528 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1529 1530/** 1531 * p2p_scan_ie - Build P2P IE for Probe Request 1532 * @p2p: P2P module context from p2p_init() 1533 * @ies: Buffer for writing P2P IE 1534 * @dev_id: Device ID to search for or %NULL for any 1535 */ 1536void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1537 1538/** 1539 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1540 * @p2p: P2P module context from p2p_init() 1541 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1542 */ 1543size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1544 1545/** 1546 * p2p_go_params - Generate random P2P group parameters 1547 * @p2p: P2P module context from p2p_init() 1548 * @params: Buffer for parameters 1549 * Returns: 0 on success, -1 on failure 1550 */ 1551int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1552 1553/** 1554 * p2p_get_group_capab - Get Group Capability from P2P IE data 1555 * @p2p_ie: P2P IE(s) contents 1556 * Returns: Group Capability 1557 */ 1558u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1559 1560/** 1561 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1562 * @p2p_ie: P2P IE(s) contents 1563 * Returns: 0 if cross connection is allow, 1 if not 1564 */ 1565int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1566 1567/** 1568 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1569 * @p2p_ie: P2P IE(s) contents 1570 * Returns: Pointer to P2P Device Address or %NULL if not included 1571 */ 1572const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1573 1574/** 1575 * p2p_get_peer_info - Get P2P peer information 1576 * @p2p: P2P module context from p2p_init() 1577 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1578 * @next: Whether to select the peer entry following the one indicated by addr 1579 * Returns: Pointer to peer info or %NULL if not found 1580 */ 1581const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1582 const u8 *addr, int next); 1583 1584/** 1585 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1586 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1587 * @buf: Buffer for returning text 1588 * @buflen: Maximum buffer length 1589 * Returns: Number of octets written to the buffer or -1 on failure 1590 * 1591 * Note: This information is internal to the P2P module and subject to change. 1592 * As such, this should not really be used by external programs for purposes 1593 * other than debugging. 1594 */ 1595int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1596 char *buf, size_t buflen); 1597 1598/** 1599 * p2p_peer_known - Check whether P2P peer is known 1600 * @p2p: P2P module context from p2p_init() 1601 * @addr: P2P Device Address of the peer 1602 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1603 */ 1604int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1605 1606/** 1607 * p2p_set_client_discoverability - Set client discoverability capability 1608 * @p2p: P2P module context from p2p_init() 1609 * @enabled: Whether client discoverability will be enabled 1610 * 1611 * This function can be used to disable (and re-enable) client discoverability. 1612 * This capability is enabled by default and should not be disabled in normal 1613 * use cases, i.e., this is mainly for testing purposes. 1614 */ 1615void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1616 1617/** 1618 * p2p_set_managed_oper - Set managed P2P Device operations capability 1619 * @p2p: P2P module context from p2p_init() 1620 * @enabled: Whether managed P2P Device operations will be enabled 1621 */ 1622void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1623 1624int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1625 1626int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1627 1628int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1629 u8 *iface_addr); 1630int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1631 u8 *dev_addr); 1632 1633void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1634 1635/** 1636 * p2p_set_cross_connect - Set cross connection capability 1637 * @p2p: P2P module context from p2p_init() 1638 * @enabled: Whether cross connection will be enabled 1639 */ 1640void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1641 1642int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1643 1644/** 1645 * p2p_set_intra_bss_dist - Set intra BSS distribution 1646 * @p2p: P2P module context from p2p_init() 1647 * @enabled: Whether intra BSS distribution will be enabled 1648 */ 1649void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1650 1651int p2p_channels_includes_freq(const struct p2p_channels *channels, 1652 unsigned int freq); 1653 1654/** 1655 * p2p_supported_freq - Check whether channel is supported for P2P 1656 * @p2p: P2P module context from p2p_init() 1657 * @freq: Channel frequency in MHz 1658 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1659 */ 1660int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1661 1662/** 1663 * p2p_get_pref_freq - Get channel from preferred channel list 1664 * @p2p: P2P module context from p2p_init() 1665 * @channels: List of channels 1666 * Returns: Preferred channel 1667 */ 1668unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 1669 const struct p2p_channels *channels); 1670 1671void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1672 1673/** 1674 * p2p_set_best_channels - Update best channel information 1675 * @p2p: P2P module context from p2p_init() 1676 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1677 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1678 * @freq_overall: Frequency (MHz) of best channel overall 1679 */ 1680void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1681 int freq_overall); 1682 1683/** 1684 * p2p_set_own_freq_preference - Set own preference for channel 1685 * @p2p: P2P module context from p2p_init() 1686 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 1687 * 1688 * This function can be used to set a preference on the operating channel based 1689 * on frequencies used on the other virtual interfaces that share the same 1690 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 1691 */ 1692void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 1693 1694const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1695 1696/** 1697 * p2p_get_group_num_members - Get number of members in group 1698 * @group: P2P group context from p2p_group_init() 1699 * Returns: Number of members in the group 1700 */ 1701unsigned int p2p_get_group_num_members(struct p2p_group *group); 1702 1703/** 1704 * p2p_iterate_group_members - Iterate group members 1705 * @group: P2P group context from p2p_group_init() 1706 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1707 * on the first call and not modified later 1708 * Returns: A P2P Interface Address for each call and %NULL for no more members 1709 */ 1710const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1711 1712/** 1713 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1714 * @group: P2P group context from p2p_group_init() 1715 * @addr: P2P Interface Address of the client 1716 * Returns: P2P Device Address of the client if found or %NULL if no match 1717 * found 1718 */ 1719const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1720 1721/** 1722 * p2p_group_is_client_connected - Check whether a specific client is connected 1723 * @group: P2P group context from p2p_group_init() 1724 * @addr: P2P Device Address of the client 1725 * Returns: 1 if client is connected or 0 if not 1726 */ 1727int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1728 1729/** 1730 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1731 * @p2p: P2P module context from p2p_init() 1732 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1733 * @next: Whether to select the peer entry following the one indicated by addr 1734 * Returns: The first P2P peer info available or %NULL if no such peer exists 1735 */ 1736const struct p2p_peer_info * 1737p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1738 1739/** 1740 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1741 * @p2p: P2P module context from p2p_init() 1742 */ 1743void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1744 1745/** 1746 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1747 * @p2p: P2P module context from p2p_init() 1748 * @vendor_ext: The vendor extensions to add 1749 * Returns: 0 on success, -1 on failure 1750 * 1751 * The wpabuf structures in the array are owned by the P2P 1752 * module after this call. 1753 */ 1754int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1755 const struct wpabuf *vendor_ext); 1756 1757/** 1758 * p2p_set_oper_channel - Set the P2P operating channel 1759 * @p2p: P2P module context from p2p_init() 1760 * @op_reg_class: Operating regulatory class to set 1761 * @op_channel: operating channel to set 1762 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1763 * Returns: 0 on success, -1 on failure 1764 */ 1765int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1766 int cfg_op_channel); 1767 1768/** 1769 * p2p_set_pref_chan - Set P2P preferred channel list 1770 * @p2p: P2P module context from p2p_init() 1771 * @num_pref_chan: Number of entries in pref_chan list 1772 * @pref_chan: Preferred channels or %NULL to remove preferences 1773 * Returns: 0 on success, -1 on failure 1774 */ 1775int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1776 const struct p2p_channel *pref_chan); 1777 1778/** 1779 * p2p_in_progress - Check whether a P2P operation is progress 1780 * @p2p: P2P module context from p2p_init() 1781 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1782 */ 1783int p2p_in_progress(struct p2p_data *p2p); 1784 1785#ifdef ANDROID_P2P 1786/** 1787 * p2p_search_in_progress - Check whether a P2P SEARCH is in progress 1788 * @p2p: P2P module context from p2p_init() 1789 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1790 */ 1791int p2p_search_in_progress(struct p2p_data *p2p); 1792 1793/** 1794 * p2p_search_pending - Check whether there is a deferred P2P SEARCH 1795 * @p2p: P2P module context from p2p_init() 1796 * Returns: 0 if there is no deferred P2P search or 1 if there is one 1797 */ 1798int p2p_search_pending(struct p2p_data *p2p); 1799#endif 1800 1801/** 1802 * p2p_other_scan_completed - Notify completion of non-P2P scan 1803 * @p2p: P2P module context from p2p_init() 1804 * Returns: 0 if P2P module is idle or 1 if an operation was started 1805 */ 1806int p2p_other_scan_completed(struct p2p_data *p2p); 1807 1808const char * p2p_wps_method_text(enum p2p_wps_method method); 1809 1810/** 1811 * p2p_set_config_timeout - Set local config timeouts 1812 * @p2p: P2P module context from p2p_init() 1813 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1814 * @client_timeout: Time in 10 ms units it takes to start the client mode 1815 */ 1816void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1817 u8 client_timeout); 1818 1819void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay); 1820 1821int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1822int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1823int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1824int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1825int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1826int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1827int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1828int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1829int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1830int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1831int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1832 const struct wpabuf *elem); 1833struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1834 1835/** 1836 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 1837 * @p2p: P2P module context from p2p_init() 1838 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 1839 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 1840 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 1841 * -1 not to limit 1842 * Returns: 0 on success, or -1 on failure 1843 * 1844 * This function can be used to configure minDiscoverableInterval and 1845 * maxDiscoverableInterval parameters for the Listen state during device 1846 * discovery (p2p_find). A random number of 100 TU units is picked for each 1847 * Listen state iteration from [min_disc_int,max_disc_int] range. 1848 * 1849 * max_disc_tu can be used to futher limit the discoverable duration. However, 1850 * it should be noted that use of this parameter is not recommended since it 1851 * would not be compliant with the P2P specification. 1852 */ 1853int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 1854 int max_disc_tu); 1855 1856#endif /* P2P_H */ 1857