p2p.h revision b6e9aaf735990dc64cdb6efccc03d076768eabf3
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 * Returns: Status code (P2P_SC_*) 706 * 707 * This optional callback can be used to implement persistent reconnect 708 * by allowing automatic restarting of persistent groups without user 709 * interaction. If this callback is not implemented (i.e., is %NULL), 710 * the received Invitation Request frames are replied with 711 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 712 * invitation_result() callback. 713 * 714 * If the requested parameters are acceptable and the group is known, 715 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 716 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 717 * can be returned if there is not enough data to provide immediate 718 * response, i.e., if some sort of user interaction is needed. The 719 * invitation_received() callback will be called in that case 720 * immediately after this call. 721 */ 722 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 723 const u8 *go_dev_addr, const u8 *ssid, 724 size_t ssid_len, int *go, u8 *group_bssid, 725 int *force_freq, int persistent_group); 726 727 /** 728 * invitation_received - Callback on Invitation Request RX 729 * @ctx: Callback context from cb_ctx 730 * @sa: Source address of the Invitation Request 731 * @bssid: P2P Group BSSID or %NULL if not received 732 * @ssid: SSID of the group 733 * @ssid_len: Length of ssid in octets 734 * @go_dev_addr: GO Device Address 735 * @status: Response Status 736 * @op_freq: Operational frequency for the group 737 * 738 * This callback is used to indicate sending of an Invitation Response 739 * for a received Invitation Request. If status == 0 (success), the 740 * upper layer code is responsible for starting the group. status == 1 741 * indicates need to get user authorization for the group. Other status 742 * values indicate that the invitation request was rejected. 743 */ 744 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 745 const u8 *ssid, size_t ssid_len, 746 const u8 *go_dev_addr, u8 status, 747 int op_freq); 748 749 /** 750 * invitation_result - Callback on Invitation result 751 * @ctx: Callback context from cb_ctx 752 * @status: Negotiation result (Status Code) 753 * @bssid: P2P Group BSSID or %NULL if not received 754 * @channels: Available operating channels for the group 755 * @addr: Peer address 756 * 757 * This callback is used to indicate result of an Invitation procedure 758 * started with a call to p2p_invite(). The indicated status code is 759 * the value received from the peer in Invitation Response with 0 760 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 761 * local failure in transmitting the Invitation Request. 762 */ 763 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 764 const struct p2p_channels *channels, 765 const u8 *addr); 766 767 /** 768 * go_connected - Check whether we are connected to a GO 769 * @ctx: Callback context from cb_ctx 770 * @dev_addr: P2P Device Address of a GO 771 * Returns: 1 if we are connected as a P2P client to the specified GO 772 * or 0 if not. 773 */ 774 int (*go_connected)(void *ctx, const u8 *dev_addr); 775}; 776 777 778/* P2P module initialization/deinitialization */ 779 780/** 781 * p2p_init - Initialize P2P module 782 * @cfg: P2P module configuration 783 * Returns: Pointer to private data or %NULL on failure 784 * 785 * This function is used to initialize global P2P module context (one per 786 * device). The P2P module will keep a copy of the configuration data, so the 787 * caller does not need to maintain this structure. However, the callback 788 * functions and the context parameters to them must be kept available until 789 * the P2P module is deinitialized with p2p_deinit(). 790 */ 791struct p2p_data * p2p_init(const struct p2p_config *cfg); 792 793/** 794 * p2p_deinit - Deinitialize P2P module 795 * @p2p: P2P module context from p2p_init() 796 */ 797void p2p_deinit(struct p2p_data *p2p); 798 799/** 800 * p2p_flush - Flush P2P module state 801 * @p2p: P2P module context from p2p_init() 802 * 803 * This command removes the P2P module state like peer device entries. 804 */ 805void p2p_flush(struct p2p_data *p2p); 806 807/** 808 * p2p_unauthorize - Unauthorize the specified peer device 809 * @p2p: P2P module context from p2p_init() 810 * @addr: P2P peer entry to be unauthorized 811 * Returns: 0 on success, -1 on failure 812 * 813 * This command removes any connection authorization from the specified P2P 814 * peer device address. This can be used, e.g., to cancel effect of a previous 815 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 816 * GO Negotiation. 817 */ 818int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 819 820/** 821 * p2p_set_dev_name - Set device name 822 * @p2p: P2P module context from p2p_init() 823 * Returns: 0 on success, -1 on failure 824 * 825 * This function can be used to update the P2P module configuration with 826 * information that was not available at the time of the p2p_init() call. 827 */ 828int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 829 830int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 831int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 832int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 833int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 834 835void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 836void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 837 838/** 839 * p2p_set_pri_dev_type - Set primary device type 840 * @p2p: P2P module context from p2p_init() 841 * Returns: 0 on success, -1 on failure 842 * 843 * This function can be used to update the P2P module configuration with 844 * information that was not available at the time of the p2p_init() call. 845 */ 846int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 847 848/** 849 * p2p_set_sec_dev_types - Set secondary device types 850 * @p2p: P2P module context from p2p_init() 851 * Returns: 0 on success, -1 on failure 852 * 853 * This function can be used to update the P2P module configuration with 854 * information that was not available at the time of the p2p_init() call. 855 */ 856int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 857 size_t num_dev_types); 858 859int p2p_set_country(struct p2p_data *p2p, const char *country); 860 861 862/* Commands from upper layer management entity */ 863 864enum p2p_discovery_type { 865 P2P_FIND_START_WITH_FULL, 866 P2P_FIND_ONLY_SOCIAL, 867 P2P_FIND_PROGRESSIVE 868}; 869 870/** 871 * p2p_find - Start P2P Find (Device Discovery) 872 * @p2p: P2P module context from p2p_init() 873 * @timeout: Timeout for find operation in seconds or 0 for no timeout 874 * @type: Device Discovery type 875 * @num_req_dev_types: Number of requested device types 876 * @req_dev_types: Requested device types array, must be an array 877 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 878 * requested device types. 879 * @dev_id: Device ID to search for or %NULL to find all devices 880 * @search_delay: Extra delay in milliseconds between search iterations 881 * Returns: 0 on success, -1 on failure 882 */ 883int p2p_find(struct p2p_data *p2p, unsigned int timeout, 884 enum p2p_discovery_type type, 885 unsigned int num_req_dev_types, const u8 *req_dev_types, 886 const u8 *dev_id, unsigned int search_delay); 887 888/** 889 * p2p_stop_find - Stop P2P Find (Device Discovery) 890 * @p2p: P2P module context from p2p_init() 891 */ 892void p2p_stop_find(struct p2p_data *p2p); 893 894/** 895 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 896 * @p2p: P2P module context from p2p_init() 897 * @freq: Frequency in MHz for next operation 898 * 899 * This is like p2p_stop_find(), but Listen state is not stopped if we are 900 * already on the same frequency. 901 */ 902void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 903 904/** 905 * p2p_listen - Start P2P Listen state for specified duration 906 * @p2p: P2P module context from p2p_init() 907 * @timeout: Listen state duration in milliseconds 908 * Returns: 0 on success, -1 on failure 909 * 910 * This function can be used to request the P2P module to keep the device 911 * discoverable on the listen channel for an extended set of time. At least in 912 * its current form, this is mainly used for testing purposes and may not be of 913 * much use for normal P2P operations. 914 */ 915int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 916 917/** 918 * p2p_connect - Start P2P group formation (GO negotiation) 919 * @p2p: P2P module context from p2p_init() 920 * @peer_addr: MAC address of the peer P2P client 921 * @wps_method: WPS method to be used in provisioning 922 * @go_intent: Local GO intent value (1..15) 923 * @own_interface_addr: Intended interface address to use with the group 924 * @force_freq: The only allowed channel frequency in MHz or 0 925 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 926 * persistent group without persistent reconnect, 2 = persistent group with 927 * persistent reconnect) 928 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 929 * a new SSID 930 * @force_ssid_len: Length of $force_ssid buffer 931 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 932 * Negotiation as an interoperability workaround when initiating group 933 * formation 934 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 935 * force_freq == 0) 936 * Returns: 0 on success, -1 on failure 937 */ 938int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 939 enum p2p_wps_method wps_method, 940 int go_intent, const u8 *own_interface_addr, 941 unsigned int force_freq, int persistent_group, 942 const u8 *force_ssid, size_t force_ssid_len, 943 int pd_before_go_neg, unsigned int pref_freq); 944 945/** 946 * p2p_authorize - Authorize P2P group formation (GO negotiation) 947 * @p2p: P2P module context from p2p_init() 948 * @peer_addr: MAC address of the peer P2P client 949 * @wps_method: WPS method to be used in provisioning 950 * @go_intent: Local GO intent value (1..15) 951 * @own_interface_addr: Intended interface address to use with the group 952 * @force_freq: The only allowed channel frequency in MHz or 0 953 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 954 * persistent group without persistent reconnect, 2 = persistent group with 955 * persistent reconnect) 956 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 957 * a new SSID 958 * @force_ssid_len: Length of $force_ssid buffer 959 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 960 * force_freq == 0) 961 * Returns: 0 on success, -1 on failure 962 * 963 * This is like p2p_connect(), but the actual group negotiation is not 964 * initiated automatically, i.e., the other end is expected to do that. 965 */ 966int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 967 enum p2p_wps_method wps_method, 968 int go_intent, const u8 *own_interface_addr, 969 unsigned int force_freq, int persistent_group, 970 const u8 *force_ssid, size_t force_ssid_len, 971 unsigned int pref_freq); 972 973/** 974 * p2p_reject - Reject peer device (explicitly block connection attempts) 975 * @p2p: P2P module context from p2p_init() 976 * @peer_addr: MAC address of the peer P2P client 977 * Returns: 0 on success, -1 on failure 978 */ 979int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 980 981/** 982 * p2p_prov_disc_req - Send Provision Discovery Request 983 * @p2p: P2P module context from p2p_init() 984 * @peer_addr: MAC address of the peer P2P client 985 * @config_methods: WPS Config Methods value (only one bit set) 986 * @join: Whether this is used by a client joining an active group 987 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 988 * @user_initiated_pd: Flag to indicate if initiated by user or not 989 * Returns: 0 on success, -1 on failure 990 * 991 * This function can be used to request a discovered P2P peer to display a PIN 992 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 993 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 994 * is transmitted once immediately and if no response is received, the frame 995 * will be sent again whenever the target device is discovered during device 996 * dsicovery (start with a p2p_find() call). Response from the peer is 997 * indicated with the p2p_config::prov_disc_resp() callback. 998 */ 999int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1000 u16 config_methods, int join, int force_freq, 1001 int user_initiated_pd); 1002 1003/** 1004 * p2p_sd_request - Schedule a service discovery query 1005 * @p2p: P2P module context from p2p_init() 1006 * @dst: Destination peer or %NULL to apply for all peers 1007 * @tlvs: P2P Service Query TLV(s) 1008 * Returns: Reference to the query or %NULL on failure 1009 * 1010 * Response to the query is indicated with the p2p_config::sd_response() 1011 * callback. 1012 */ 1013void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1014 const struct wpabuf *tlvs); 1015 1016#ifdef CONFIG_WIFI_DISPLAY 1017void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1018 const struct wpabuf *tlvs); 1019#endif /* CONFIG_WIFI_DISPLAY */ 1020 1021/** 1022 * p2p_sd_cancel_request - Cancel a pending service discovery query 1023 * @p2p: P2P module context from p2p_init() 1024 * @req: Query reference from p2p_sd_request() 1025 * Returns: 0 if request for cancelled; -1 if not found 1026 */ 1027int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1028 1029/** 1030 * p2p_sd_response - Send response to a service discovery query 1031 * @p2p: P2P module context from p2p_init() 1032 * @freq: Frequency from p2p_config::sd_request() callback 1033 * @dst: Destination address from p2p_config::sd_request() callback 1034 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1035 * @resp_tlvs: P2P Service Response TLV(s) 1036 * 1037 * This function is called as a response to the request indicated with 1038 * p2p_config::sd_request() callback. 1039 */ 1040void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1041 u8 dialog_token, const struct wpabuf *resp_tlvs); 1042 1043/** 1044 * p2p_sd_service_update - Indicate a change in local services 1045 * @p2p: P2P module context from p2p_init() 1046 * 1047 * This function needs to be called whenever there is a change in availability 1048 * of the local services. This will increment the Service Update Indicator 1049 * value which will be used in SD Request and Response frames. 1050 */ 1051#ifdef ANDROID_P2P 1052void p2p_sd_service_update(struct p2p_data *p2p, int action); 1053#else 1054void p2p_sd_service_update(struct p2p_data *p2p); 1055#endif 1056 1057 1058enum p2p_invite_role { 1059 P2P_INVITE_ROLE_GO, 1060 P2P_INVITE_ROLE_ACTIVE_GO, 1061 P2P_INVITE_ROLE_CLIENT 1062}; 1063 1064/** 1065 * p2p_invite - Invite a P2P Device into a group 1066 * @p2p: P2P module context from p2p_init() 1067 * @peer: Device Address of the peer P2P Device 1068 * @role: Local role in the group 1069 * @bssid: Group BSSID or %NULL if not known 1070 * @ssid: Group SSID 1071 * @ssid_len: Length of ssid in octets 1072 * @force_freq: The only allowed channel frequency in MHz or 0 1073 * @go_dev_addr: Forced GO Device Address or %NULL if none 1074 * @persistent_group: Whether this is to reinvoke a persistent group 1075 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1076 * force_freq == 0) 1077 * Returns: 0 on success, -1 on failure 1078 */ 1079int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1080 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1081 unsigned int force_freq, const u8 *go_dev_addr, 1082 int persistent_group, unsigned int pref_freq); 1083 1084/** 1085 * p2p_presence_req - Request GO presence 1086 * @p2p: P2P module context from p2p_init() 1087 * @go_interface_addr: GO P2P Interface Address 1088 * @own_interface_addr: Own P2P Interface Address for this group 1089 * @freq: Group operating frequence (in MHz) 1090 * @duration1: Preferred presence duration in microseconds 1091 * @interval1: Preferred presence interval in microseconds 1092 * @duration2: Acceptable presence duration in microseconds 1093 * @interval2: Acceptable presence interval in microseconds 1094 * Returns: 0 on success, -1 on failure 1095 * 1096 * If both duration and interval values are zero, the parameter pair is not 1097 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1098 */ 1099int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1100 const u8 *own_interface_addr, unsigned int freq, 1101 u32 duration1, u32 interval1, u32 duration2, 1102 u32 interval2); 1103 1104/** 1105 * p2p_ext_listen - Set Extended Listen Timing 1106 * @p2p: P2P module context from p2p_init() 1107 * @freq: Group operating frequence (in MHz) 1108 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1109 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1110 * Returns: 0 on success, -1 on failure 1111 * 1112 * This function can be used to enable or disable (period = interval = 0) 1113 * Extended Listen Timing. When enabled, the P2P Device will become 1114 * discoverable (go into Listen State) every @interval milliseconds for at 1115 * least @period milliseconds. 1116 */ 1117int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1118 unsigned int interval); 1119 1120/* Event notifications from upper layer management operations */ 1121 1122/** 1123 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1124 * @p2p: P2P module context from p2p_init() 1125 * @mac_addr: Peer address 1126 * 1127 * This function is used to report successfully completed WPS provisioning 1128 * during group formation in both GO/Registrar and client/Enrollee roles. 1129 */ 1130void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1131 1132/** 1133 * p2p_group_formation_failed - Report failed WPS provisioning 1134 * @p2p: P2P module context from p2p_init() 1135 * 1136 * This function is used to report failed group formation. This can happen 1137 * either due to failed WPS provisioning or due to 15 second timeout during 1138 * the provisioning phase. 1139 */ 1140void p2p_group_formation_failed(struct p2p_data *p2p); 1141 1142/** 1143 * p2p_get_provisioning_info - Get any stored provisioning info 1144 * @p2p: P2P module context from p2p_init() 1145 * @addr: Peer P2P Device Address 1146 * Returns: WPS provisioning information (WPS config method) or 0 if no 1147 * information is available 1148 * 1149 * This function is used to retrieve stored WPS provisioning info for the given 1150 * peer. 1151 */ 1152u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1153 1154/** 1155 * p2p_clear_provisioning_info - Clear any stored provisioning info 1156 * @p2p: P2P module context from p2p_init() 1157 * @iface_addr: Peer P2P Device Address 1158 * 1159 * This function is used to clear stored WPS provisioning info for the given 1160 * peer. 1161 */ 1162void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1163 1164 1165/* Event notifications from lower layer driver operations */ 1166 1167/** 1168 * enum p2p_probe_req_status 1169 * 1170 * @P2P_PREQ_MALFORMED: frame was not well-formed 1171 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1172 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1173 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1174 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1175 */ 1176enum p2p_probe_req_status { 1177 P2P_PREQ_MALFORMED, 1178 P2P_PREQ_NOT_LISTEN, 1179 P2P_PREQ_NOT_P2P, 1180 P2P_PREQ_NOT_PROCESSED, 1181 P2P_PREQ_PROCESSED 1182}; 1183 1184/** 1185 * p2p_probe_req_rx - Report reception of a Probe Request frame 1186 * @p2p: P2P module context from p2p_init() 1187 * @addr: Source MAC address 1188 * @dst: Destination MAC address if available or %NULL 1189 * @bssid: BSSID if available or %NULL 1190 * @ie: Information elements from the Probe Request frame body 1191 * @ie_len: Length of ie buffer in octets 1192 * Returns: value indicating the type and status of the probe request 1193 */ 1194enum p2p_probe_req_status 1195p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1196 const u8 *bssid, const u8 *ie, size_t ie_len); 1197 1198/** 1199 * p2p_rx_action - Report received Action frame 1200 * @p2p: P2P module context from p2p_init() 1201 * @da: Destination address of the received Action frame 1202 * @sa: Source address of the received Action frame 1203 * @bssid: Address 3 of the received Action frame 1204 * @category: Category of the received Action frame 1205 * @data: Action frame body after the Category field 1206 * @len: Length of the data buffer in octets 1207 * @freq: Frequency (in MHz) on which the frame was received 1208 */ 1209void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1210 const u8 *bssid, u8 category, 1211 const u8 *data, size_t len, int freq); 1212 1213/** 1214 * p2p_scan_res_handler - Indicate a P2P scan results 1215 * @p2p: P2P module context from p2p_init() 1216 * @bssid: BSSID of the scan result 1217 * @freq: Frequency of the channel on which the device was found in MHz 1218 * @rx_time: Time when the result was received 1219 * @level: Signal level (signal strength of the received Beacon/Probe Response 1220 * frame) 1221 * @ies: Pointer to IEs from the scan result 1222 * @ies_len: Length of the ies buffer 1223 * Returns: 0 to continue or 1 to stop scan result indication 1224 * 1225 * This function is called to indicate a scan result entry with P2P IE from a 1226 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1227 * the actual scan process (i.e., whenever a new device is found) or as a 1228 * sequence of calls after the full scan has been completed. The former option 1229 * can result in optimized operations, but may not be supported by all 1230 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1231 * but it is recommended to include all IEs received from the device. The 1232 * caller does not need to check that the IEs contain a P2P IE before calling 1233 * this function since frames will be filtered internally if needed. 1234 * 1235 * This function will return 1 if it wants to stop scan result iteration (and 1236 * scan in general if it is still in progress). This is used to allow faster 1237 * start of a pending operation, e.g., to start a pending GO negotiation. 1238 */ 1239int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1240 struct os_time *rx_time, int level, const u8 *ies, 1241 size_t ies_len); 1242 1243/** 1244 * p2p_scan_res_handled - Indicate end of scan results 1245 * @p2p: P2P module context from p2p_init() 1246 * 1247 * This function is called to indicate that all P2P scan results from a scan 1248 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1249 * function must be called as a response to successful 1250 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1251 * calls stopped iteration. 1252 */ 1253void p2p_scan_res_handled(struct p2p_data *p2p); 1254 1255enum p2p_send_action_result { 1256 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1257 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1258 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1259}; 1260 1261/** 1262 * p2p_send_action_cb - Notify TX status of an Action frame 1263 * @p2p: P2P module context from p2p_init() 1264 * @freq: Channel frequency in MHz 1265 * @dst: Destination MAC address (Address 1) 1266 * @src: Source MAC address (Address 2) 1267 * @bssid: BSSID (Address 3) 1268 * @result: Result of the transmission attempt 1269 * 1270 * This function is used to indicate the result of an Action frame transmission 1271 * that was requested with struct p2p_config::send_action() callback. 1272 */ 1273void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1274 const u8 *src, const u8 *bssid, 1275 enum p2p_send_action_result result); 1276 1277/** 1278 * p2p_listen_cb - Indicate the start of a requested Listen state 1279 * @p2p: P2P module context from p2p_init() 1280 * @freq: Listen channel frequency in MHz 1281 * @duration: Duration for the Listen state in milliseconds 1282 * 1283 * This function is used to indicate that a Listen state requested with 1284 * struct p2p_config::start_listen() callback has started. 1285 */ 1286void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1287 unsigned int duration); 1288 1289/** 1290 * p2p_listen_end - Indicate the end of a requested Listen state 1291 * @p2p: P2P module context from p2p_init() 1292 * @freq: Listen channel frequency in MHz 1293 * Returns: 0 if no operations were started, 1 if an operation was started 1294 * 1295 * This function is used to indicate that a Listen state requested with 1296 * struct p2p_config::start_listen() callback has ended. 1297 */ 1298int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1299 1300void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1301 const u8 *ie, size_t ie_len); 1302 1303void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1304 const u8 *ie, size_t ie_len); 1305 1306 1307/* Per-group P2P state for GO */ 1308 1309struct p2p_group; 1310 1311/** 1312 * struct p2p_group_config - P2P group configuration 1313 * 1314 * This configuration is provided to the P2P module during initialization of 1315 * the per-group information with p2p_group_init(). 1316 */ 1317struct p2p_group_config { 1318 /** 1319 * persistent_group - Whether the group is persistent 1320 * 0 = not a persistent group 1321 * 1 = persistent group without persistent reconnect 1322 * 2 = persistent group with persistent reconnect 1323 */ 1324 int persistent_group; 1325 1326 /** 1327 * interface_addr - P2P Interface Address of the group 1328 */ 1329 u8 interface_addr[ETH_ALEN]; 1330 1331 /** 1332 * max_clients - Maximum number of clients in the group 1333 */ 1334 unsigned int max_clients; 1335 1336 /** 1337 * ssid - Group SSID 1338 */ 1339 u8 ssid[32]; 1340 1341 /** 1342 * ssid_len - Length of SSID 1343 */ 1344 size_t ssid_len; 1345 1346 /** 1347 * cb_ctx - Context to use with callback functions 1348 */ 1349 void *cb_ctx; 1350 1351 /** 1352 * ie_update - Notification of IE update 1353 * @ctx: Callback context from cb_ctx 1354 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1355 * @proberesp_ies: P2P Ie for Probe Response frames 1356 * 1357 * P2P module uses this callback function to notify whenever the P2P IE 1358 * in Beacon or Probe Response frames should be updated based on group 1359 * events. 1360 * 1361 * The callee is responsible for freeing the returned buffer(s) with 1362 * wpabuf_free(). 1363 */ 1364 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1365 struct wpabuf *proberesp_ies); 1366 1367 /** 1368 * idle_update - Notification of changes in group idle state 1369 * @ctx: Callback context from cb_ctx 1370 * @idle: Whether the group is idle (no associated stations) 1371 */ 1372 void (*idle_update)(void *ctx, int idle); 1373}; 1374 1375/** 1376 * p2p_group_init - Initialize P2P group 1377 * @p2p: P2P module context from p2p_init() 1378 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1379 * Returns: Pointer to private data or %NULL on failure 1380 * 1381 * This function is used to initialize per-group P2P module context. Currently, 1382 * this is only used to manage GO functionality and P2P clients do not need to 1383 * create an instance of this per-group information. 1384 */ 1385struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1386 struct p2p_group_config *config); 1387 1388/** 1389 * p2p_group_deinit - Deinitialize P2P group 1390 * @group: P2P group context from p2p_group_init() 1391 */ 1392void p2p_group_deinit(struct p2p_group *group); 1393 1394/** 1395 * p2p_group_notif_assoc - Notification of P2P client association with GO 1396 * @group: P2P group context from p2p_group_init() 1397 * @addr: Interface address of the P2P client 1398 * @ie: IEs from the (Re)association Request frame 1399 * @len: Length of the ie buffer in octets 1400 * Returns: 0 on success, -1 on failure 1401 */ 1402int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1403 const u8 *ie, size_t len); 1404 1405/** 1406 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1407 * @group: P2P group context from p2p_group_init() 1408 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1409 * Returns: P2P IE for (Re)association Response or %NULL on failure 1410 * 1411 * The caller is responsible for freeing the returned buffer with 1412 * wpabuf_free(). 1413 */ 1414struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1415 1416/** 1417 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1418 * @group: P2P group context from p2p_group_init() 1419 * @addr: Interface address of the P2P client 1420 */ 1421void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1422 1423/** 1424 * p2p_group_notif_formation_done - Notification of completed group formation 1425 * @group: P2P group context from p2p_group_init() 1426 */ 1427void p2p_group_notif_formation_done(struct p2p_group *group); 1428 1429/** 1430 * p2p_group_notif_noa - Notification of NoA change 1431 * @group: P2P group context from p2p_group_init() 1432 * @noa: Notice of Absence attribute payload, %NULL if none 1433 * @noa_len: Length of noa buffer in octets 1434 * Returns: 0 on success, -1 on failure 1435 * 1436 * Notify the P2P group management about a new NoA contents. This will be 1437 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1438 * the group information. 1439 */ 1440int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1441 size_t noa_len); 1442 1443/** 1444 * p2p_group_match_dev_type - Match device types in group with requested type 1445 * @group: P2P group context from p2p_group_init() 1446 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1447 * Returns: 1 on match, 0 on mismatch 1448 * 1449 * This function can be used to match the Requested Device Type attribute in 1450 * WPS IE with the device types of a group member for deciding whether a GO 1451 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1452 * is not requested any specific device type. 1453 */ 1454int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1455 1456/** 1457 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1458 */ 1459int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1460 1461/** 1462 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1463 * @group: P2P group context from p2p_group_init() 1464 * Returns: 0 on success (frame scheduled); -1 if client was not found 1465 */ 1466int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1467 const u8 *searching_dev, int rx_freq); 1468 1469 1470/* Generic helper functions */ 1471 1472/** 1473 * p2p_ie_text - Build text format description of P2P IE 1474 * @p2p_ie: P2P IE 1475 * @buf: Buffer for returning text 1476 * @end: Pointer to the end of the buf area 1477 * Returns: Number of octets written to the buffer or -1 on failure 1478 * 1479 * This function can be used to parse P2P IE contents into text format 1480 * field=value lines. 1481 */ 1482int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1483 1484/** 1485 * p2p_scan_result_text - Build text format description of P2P IE 1486 * @ies: Information elements from scan results 1487 * @ies_len: ies buffer length in octets 1488 * @buf: Buffer for returning text 1489 * @end: Pointer to the end of the buf area 1490 * Returns: Number of octets written to the buffer or -1 on failure 1491 * 1492 * This function can be used to parse P2P IE contents into text format 1493 * field=value lines. 1494 */ 1495int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1496 1497/** 1498 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1499 * P2P IE 1500 * @p2p_ie: P2P IE 1501 * @dev_addr: Buffer for returning P2P Device Address 1502 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1503 */ 1504int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1505 1506/** 1507 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1508 * @ies: Information elements from scan results 1509 * @ies_len: ies buffer length in octets 1510 * @dev_addr: Buffer for returning P2P Device Address 1511 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1512 */ 1513int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1514 1515/** 1516 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1517 * @p2p: P2P module context from p2p_init() 1518 * @bssid: BSSID 1519 * @buf: Buffer for writing the P2P IE 1520 * @len: Maximum buf length in octets 1521 * @p2p_group: Whether this is for association with a P2P GO 1522 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1523 * Returns: Number of octets written into buf or -1 on failure 1524 */ 1525int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1526 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1527 1528/** 1529 * p2p_scan_ie - Build P2P IE for Probe Request 1530 * @p2p: P2P module context from p2p_init() 1531 * @ies: Buffer for writing P2P IE 1532 * @dev_id: Device ID to search for or %NULL for any 1533 */ 1534void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1535 1536/** 1537 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1538 * @p2p: P2P module context from p2p_init() 1539 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1540 */ 1541size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1542 1543/** 1544 * p2p_go_params - Generate random P2P group parameters 1545 * @p2p: P2P module context from p2p_init() 1546 * @params: Buffer for parameters 1547 * Returns: 0 on success, -1 on failure 1548 */ 1549int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1550 1551/** 1552 * p2p_get_group_capab - Get Group Capability from P2P IE data 1553 * @p2p_ie: P2P IE(s) contents 1554 * Returns: Group Capability 1555 */ 1556u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1557 1558/** 1559 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1560 * @p2p_ie: P2P IE(s) contents 1561 * Returns: 0 if cross connection is allow, 1 if not 1562 */ 1563int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1564 1565/** 1566 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1567 * @p2p_ie: P2P IE(s) contents 1568 * Returns: Pointer to P2P Device Address or %NULL if not included 1569 */ 1570const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1571 1572/** 1573 * p2p_get_peer_info - Get P2P peer information 1574 * @p2p: P2P module context from p2p_init() 1575 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1576 * @next: Whether to select the peer entry following the one indicated by addr 1577 * Returns: Pointer to peer info or %NULL if not found 1578 */ 1579const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1580 const u8 *addr, int next); 1581 1582/** 1583 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1584 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1585 * @buf: Buffer for returning text 1586 * @buflen: Maximum buffer length 1587 * Returns: Number of octets written to the buffer or -1 on failure 1588 * 1589 * Note: This information is internal to the P2P module and subject to change. 1590 * As such, this should not really be used by external programs for purposes 1591 * other than debugging. 1592 */ 1593int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1594 char *buf, size_t buflen); 1595 1596/** 1597 * p2p_peer_known - Check whether P2P peer is known 1598 * @p2p: P2P module context from p2p_init() 1599 * @addr: P2P Device Address of the peer 1600 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1601 */ 1602int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1603 1604/** 1605 * p2p_set_client_discoverability - Set client discoverability capability 1606 * @p2p: P2P module context from p2p_init() 1607 * @enabled: Whether client discoverability will be enabled 1608 * 1609 * This function can be used to disable (and re-enable) client discoverability. 1610 * This capability is enabled by default and should not be disabled in normal 1611 * use cases, i.e., this is mainly for testing purposes. 1612 */ 1613void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1614 1615/** 1616 * p2p_set_managed_oper - Set managed P2P Device operations capability 1617 * @p2p: P2P module context from p2p_init() 1618 * @enabled: Whether managed P2P Device operations will be enabled 1619 */ 1620void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1621 1622int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1623 1624int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1625 1626int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1627 u8 *iface_addr); 1628int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1629 u8 *dev_addr); 1630 1631void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1632 1633/** 1634 * p2p_set_cross_connect - Set cross connection capability 1635 * @p2p: P2P module context from p2p_init() 1636 * @enabled: Whether cross connection will be enabled 1637 */ 1638void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1639 1640int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1641 1642/** 1643 * p2p_set_intra_bss_dist - Set intra BSS distribution 1644 * @p2p: P2P module context from p2p_init() 1645 * @enabled: Whether intra BSS distribution will be enabled 1646 */ 1647void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1648 1649int p2p_channels_includes_freq(const struct p2p_channels *channels, 1650 unsigned int freq); 1651 1652/** 1653 * p2p_supported_freq - Check whether channel is supported for P2P 1654 * @p2p: P2P module context from p2p_init() 1655 * @freq: Channel frequency in MHz 1656 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1657 */ 1658int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1659 1660/** 1661 * p2p_get_pref_freq - Get channel from preferred channel list 1662 * @p2p: P2P module context from p2p_init() 1663 * @channels: List of channels 1664 * Returns: Preferred channel 1665 */ 1666unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 1667 const struct p2p_channels *channels); 1668 1669void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1670 1671/** 1672 * p2p_set_best_channels - Update best channel information 1673 * @p2p: P2P module context from p2p_init() 1674 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1675 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1676 * @freq_overall: Frequency (MHz) of best channel overall 1677 */ 1678void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1679 int freq_overall); 1680 1681/** 1682 * p2p_set_own_freq_preference - Set own preference for channel 1683 * @p2p: P2P module context from p2p_init() 1684 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 1685 * 1686 * This function can be used to set a preference on the operating channel based 1687 * on frequencies used on the other virtual interfaces that share the same 1688 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 1689 */ 1690void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 1691 1692const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1693 1694/** 1695 * p2p_get_group_num_members - Get number of members in group 1696 * @group: P2P group context from p2p_group_init() 1697 * Returns: Number of members in the group 1698 */ 1699unsigned int p2p_get_group_num_members(struct p2p_group *group); 1700 1701/** 1702 * p2p_iterate_group_members - Iterate group members 1703 * @group: P2P group context from p2p_group_init() 1704 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1705 * on the first call and not modified later 1706 * Returns: A P2P Interface Address for each call and %NULL for no more members 1707 */ 1708const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1709 1710/** 1711 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1712 * @group: P2P group context from p2p_group_init() 1713 * @addr: P2P Interface Address of the client 1714 * Returns: P2P Device Address of the client if found or %NULL if no match 1715 * found 1716 */ 1717const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1718 1719/** 1720 * p2p_group_is_client_connected - Check whether a specific client is connected 1721 * @group: P2P group context from p2p_group_init() 1722 * @addr: P2P Device Address of the client 1723 * Returns: 1 if client is connected or 0 if not 1724 */ 1725int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1726 1727/** 1728 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1729 * @p2p: P2P module context from p2p_init() 1730 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1731 * @next: Whether to select the peer entry following the one indicated by addr 1732 * Returns: The first P2P peer info available or %NULL if no such peer exists 1733 */ 1734const struct p2p_peer_info * 1735p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1736 1737/** 1738 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1739 * @p2p: P2P module context from p2p_init() 1740 */ 1741void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1742 1743/** 1744 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1745 * @p2p: P2P module context from p2p_init() 1746 * @vendor_ext: The vendor extensions to add 1747 * Returns: 0 on success, -1 on failure 1748 * 1749 * The wpabuf structures in the array are owned by the P2P 1750 * module after this call. 1751 */ 1752int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1753 const struct wpabuf *vendor_ext); 1754 1755/** 1756 * p2p_set_oper_channel - Set the P2P operating channel 1757 * @p2p: P2P module context from p2p_init() 1758 * @op_reg_class: Operating regulatory class to set 1759 * @op_channel: operating channel to set 1760 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1761 * Returns: 0 on success, -1 on failure 1762 */ 1763int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1764 int cfg_op_channel); 1765 1766/** 1767 * p2p_set_pref_chan - Set P2P preferred channel list 1768 * @p2p: P2P module context from p2p_init() 1769 * @num_pref_chan: Number of entries in pref_chan list 1770 * @pref_chan: Preferred channels or %NULL to remove preferences 1771 * Returns: 0 on success, -1 on failure 1772 */ 1773int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1774 const struct p2p_channel *pref_chan); 1775 1776/** 1777 * p2p_in_progress - Check whether a P2P operation is progress 1778 * @p2p: P2P module context from p2p_init() 1779 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1780 */ 1781int p2p_in_progress(struct p2p_data *p2p); 1782 1783#ifdef ANDROID_P2P 1784/** 1785 * p2p_search_in_progress - Check whether a P2P SEARCH is in progress 1786 * @p2p: P2P module context from p2p_init() 1787 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1788 */ 1789int p2p_search_in_progress(struct p2p_data *p2p); 1790 1791/** 1792 * p2p_search_pending - Check whether there is a deferred P2P SEARCH 1793 * @p2p: P2P module context from p2p_init() 1794 * Returns: 0 if there is no deferred P2P search or 1 if there is one 1795 */ 1796int p2p_search_pending(struct p2p_data *p2p); 1797#endif 1798 1799/** 1800 * p2p_other_scan_completed - Notify completion of non-P2P scan 1801 * @p2p: P2P module context from p2p_init() 1802 * Returns: 0 if P2P module is idle or 1 if an operation was started 1803 */ 1804int p2p_other_scan_completed(struct p2p_data *p2p); 1805 1806const char * p2p_wps_method_text(enum p2p_wps_method method); 1807 1808/** 1809 * p2p_set_config_timeout - Set local config timeouts 1810 * @p2p: P2P module context from p2p_init() 1811 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1812 * @client_timeout: Time in 10 ms units it takes to start the client mode 1813 */ 1814void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1815 u8 client_timeout); 1816 1817void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay); 1818 1819int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1820int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1821int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1822int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1823int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1824int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1825int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1826int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1827int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1828int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1829int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1830 const struct wpabuf *elem); 1831struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1832 1833/** 1834 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 1835 * @p2p: P2P module context from p2p_init() 1836 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 1837 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 1838 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 1839 * -1 not to limit 1840 * Returns: 0 on success, or -1 on failure 1841 * 1842 * This function can be used to configure minDiscoverableInterval and 1843 * maxDiscoverableInterval parameters for the Listen state during device 1844 * discovery (p2p_find). A random number of 100 TU units is picked for each 1845 * Listen state iteration from [min_disc_int,max_disc_int] range. 1846 * 1847 * max_disc_tu can be used to futher limit the discoverable duration. However, 1848 * it should be noted that use of this parameter is not recommended since it 1849 * would not be compliant with the P2P specification. 1850 */ 1851int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 1852 int max_disc_tu); 1853 1854#endif /* P2P_H */ 1855