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 */ 25 struct 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 52 enum p2p_wps_method { 53 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC 54 }; 55 56 /** 57 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 58 */ 59 struct p2p_go_neg_results { 60 /** 61 * status - Negotiation result (Status Code) 62 * 63 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 64 * failed negotiation. 65 */ 66 int status; 67 68 /** 69 * role_go - Whether local end is Group Owner 70 */ 71 int role_go; 72 73 /** 74 * freq - Frequency of the group operational channel in MHz 75 */ 76 int freq; 77 78 int ht40; 79 80 /** 81 * ssid - SSID of the group 82 */ 83 u8 ssid[32]; 84 85 /** 86 * ssid_len - Length of SSID in octets 87 */ 88 size_t ssid_len; 89 90 /** 91 * psk - WPA pre-shared key (256 bits) (GO only) 92 */ 93 u8 psk[32]; 94 95 /** 96 * psk_set - Whether PSK field is configured (GO only) 97 */ 98 int psk_set; 99 100 /** 101 * passphrase - WPA2-Personal passphrase for the group (GO only) 102 */ 103 char passphrase[64]; 104 105 /** 106 * peer_device_addr - P2P Device Address of the peer 107 */ 108 u8 peer_device_addr[ETH_ALEN]; 109 110 /** 111 * peer_interface_addr - P2P Interface Address of the peer 112 */ 113 u8 peer_interface_addr[ETH_ALEN]; 114 115 /** 116 * wps_method - WPS method to be used during provisioning 117 */ 118 enum p2p_wps_method wps_method; 119 120 #define P2P_MAX_CHANNELS 50 121 122 /** 123 * freq_list - Zero-terminated list of possible operational channels 124 */ 125 int freq_list[P2P_MAX_CHANNELS]; 126 127 /** 128 * persistent_group - Whether the group should be made persistent 129 * 0 = not persistent 130 * 1 = persistent group without persistent reconnect 131 * 2 = persistent group with persistent reconnect 132 */ 133 int persistent_group; 134 135 /** 136 * peer_config_timeout - Peer configuration timeout (in 10 msec units) 137 */ 138 unsigned int peer_config_timeout; 139 }; 140 141 struct p2p_data; 142 143 enum p2p_scan_type { 144 P2P_SCAN_SOCIAL, 145 P2P_SCAN_FULL, 146 P2P_SCAN_SOCIAL_PLUS_ONE 147 }; 148 149 #define P2P_MAX_WPS_VENDOR_EXT 10 150 151 /** 152 * struct p2p_peer_info - P2P peer information 153 */ 154 struct p2p_peer_info { 155 /** 156 * p2p_device_addr - P2P Device Address of the peer 157 */ 158 u8 p2p_device_addr[ETH_ALEN]; 159 160 /** 161 * pri_dev_type - Primary Device Type 162 */ 163 u8 pri_dev_type[8]; 164 165 /** 166 * device_name - Device Name (0..32 octets encoded in UTF-8) 167 */ 168 char device_name[33]; 169 170 /** 171 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 172 */ 173 char manufacturer[65]; 174 175 /** 176 * model_name - Model Name (0..32 octets encoded in UTF-8) 177 */ 178 char model_name[33]; 179 180 /** 181 * model_number - Model Number (0..32 octets encoded in UTF-8) 182 */ 183 char model_number[33]; 184 185 /** 186 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 187 */ 188 char serial_number[33]; 189 190 /** 191 * level - Signal level 192 */ 193 int level; 194 195 /** 196 * config_methods - WPS Configuration Methods 197 */ 198 u16 config_methods; 199 200 /** 201 * dev_capab - Device Capabilities 202 */ 203 u8 dev_capab; 204 205 /** 206 * group_capab - Group Capabilities 207 */ 208 u8 group_capab; 209 210 /** 211 * wps_sec_dev_type_list - WPS secondary device type list 212 * 213 * This list includes from 0 to 16 Secondary Device Types as indicated 214 * by wps_sec_dev_type_list_len (8 * number of types). 215 */ 216 u8 wps_sec_dev_type_list[128]; 217 218 /** 219 * wps_sec_dev_type_list_len - Length of secondary device type list 220 */ 221 size_t wps_sec_dev_type_list_len; 222 223 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 224 225 /** 226 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s) 227 */ 228 struct wpabuf *wfd_subelems; 229 }; 230 231 enum p2p_prov_disc_status { 232 P2P_PROV_DISC_SUCCESS, 233 P2P_PROV_DISC_TIMEOUT, 234 P2P_PROV_DISC_REJECTED, 235 P2P_PROV_DISC_TIMEOUT_JOIN, 236 }; 237 238 struct p2p_channel { 239 u8 op_class; 240 u8 chan; 241 }; 242 243 /** 244 * struct p2p_config - P2P configuration 245 * 246 * This configuration is provided to the P2P module during initialization with 247 * p2p_init(). 248 */ 249 struct p2p_config { 250 /** 251 * country - Country code to use in P2P operations 252 */ 253 char country[3]; 254 255 /** 256 * reg_class - Regulatory class for own listen channel 257 */ 258 u8 reg_class; 259 260 /** 261 * channel - Own listen channel 262 */ 263 u8 channel; 264 265 /** 266 * Regulatory class for own operational channel 267 */ 268 u8 op_reg_class; 269 270 /** 271 * op_channel - Own operational channel 272 */ 273 u8 op_channel; 274 275 /** 276 * cfg_op_channel - Whether op_channel is hardcoded in configuration 277 */ 278 u8 cfg_op_channel; 279 280 /** 281 * channels - Own supported regulatory classes and channels 282 * 283 * List of supposerted channels per regulatory class. The regulatory 284 * classes are defined in IEEE Std 802.11-2007 Annex J and the 285 * numbering of the clases depends on the configured country code. 286 */ 287 struct p2p_channels channels; 288 289 /** 290 * num_pref_chan - Number of pref_chan entries 291 */ 292 unsigned int num_pref_chan; 293 294 /** 295 * pref_chan - Preferred channels for GO Negotiation 296 */ 297 struct p2p_channel *pref_chan; 298 299 /** 300 * pri_dev_type - Primary Device Type (see WPS) 301 */ 302 u8 pri_dev_type[8]; 303 304 /** 305 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 306 */ 307 #define P2P_SEC_DEVICE_TYPES 5 308 309 /** 310 * sec_dev_type - Optional secondary device types 311 */ 312 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 313 314 /** 315 * num_sec_dev_types - Number of sec_dev_type entries 316 */ 317 size_t num_sec_dev_types; 318 319 /** 320 * dev_addr - P2P Device Address 321 */ 322 u8 dev_addr[ETH_ALEN]; 323 324 /** 325 * dev_name - Device Name 326 */ 327 char *dev_name; 328 329 char *manufacturer; 330 char *model_name; 331 char *model_number; 332 char *serial_number; 333 334 u8 uuid[16]; 335 u16 config_methods; 336 337 /** 338 * concurrent_operations - Whether concurrent operations are supported 339 */ 340 int concurrent_operations; 341 342 /** 343 * max_peers - Maximum number of discovered peers to remember 344 * 345 * If more peers are discovered, older entries will be removed to make 346 * room for the new ones. 347 */ 348 size_t max_peers; 349 350 /** 351 * p2p_intra_bss - Intra BSS communication is supported 352 */ 353 int p2p_intra_bss; 354 355 /** 356 * ssid_postfix - Postfix data to add to the SSID 357 * 358 * This data will be added to the end of the SSID after the 359 * DIRECT-<random two octets> prefix. 360 */ 361 u8 ssid_postfix[32 - 9]; 362 363 /** 364 * ssid_postfix_len - Length of the ssid_postfix data 365 */ 366 size_t ssid_postfix_len; 367 368 /** 369 * max_listen - Maximum listen duration in ms 370 */ 371 unsigned int max_listen; 372 373 /** 374 * cb_ctx - Context to use with callback functions 375 */ 376 void *cb_ctx; 377 378 /** 379 * debug_print - Debug print 380 * @ctx: Callback context from cb_ctx 381 * @level: Debug verbosity level (MSG_*) 382 * @msg: Debug message 383 */ 384 void (*debug_print)(void *ctx, int level, const char *msg); 385 386 387 /* Callbacks to request lower layer driver operations */ 388 389 /** 390 * p2p_scan - Request a P2P scan/search 391 * @ctx: Callback context from cb_ctx 392 * @type: Scan type 393 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 394 * @num_req_dev_types: Number of requested device types 395 * @req_dev_types: Array containing requested device types 396 * @dev_id: Device ID to search for or %NULL to find all devices 397 * @pw_id: Device Password ID 398 * Returns: 0 on success, -1 on failure 399 * 400 * This callback function is used to request a P2P scan or search 401 * operation to be completed. Type type argument specifies which type 402 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 403 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 404 * indicates that all channels are to be scanned. 405 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 406 * plus one extra channel specified by freq. 407 * 408 * The full scan is used for the initial scan to find group owners from 409 * all. The other types are used during search phase scan of the social 410 * channels (with potential variation if the Listen channel of the 411 * target peer is known or if other channels are scanned in steps). 412 * 413 * The scan results are returned after this call by calling 414 * p2p_scan_res_handler() for each scan result that has a P2P IE and 415 * then calling p2p_scan_res_handled() to indicate that all scan 416 * results have been indicated. 417 */ 418 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 419 unsigned int num_req_dev_types, 420 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 421 422 /** 423 * send_probe_resp - Transmit a Probe Response frame 424 * @ctx: Callback context from cb_ctx 425 * @buf: Probe Response frame (including the header and body) 426 * Returns: 0 on success, -1 on failure 427 * 428 * This function is used to reply to Probe Request frames that were 429 * indicated with a call to p2p_probe_req_rx(). The response is to be 430 * sent on the same channel or to be dropped if the driver is not 431 * anymore listening to Probe Request frames. 432 * 433 * Alternatively, the responsibility for building the Probe Response 434 * frames in Listen state may be in another system component in which 435 * case this function need to be implemented (i.e., the function 436 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 437 * Response frames in such a case are available from the 438 * start_listen() callback. It should be noted that the received Probe 439 * Request frames must be indicated by calling p2p_probe_req_rx() even 440 * if this send_probe_resp() is not used. 441 */ 442 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 443 444 /** 445 * send_action - Transmit an Action frame 446 * @ctx: Callback context from cb_ctx 447 * @freq: Frequency in MHz for the channel on which to transmit 448 * @dst: Destination MAC address (Address 1) 449 * @src: Source MAC address (Address 2) 450 * @bssid: BSSID (Address 3) 451 * @buf: Frame body (starting from Category field) 452 * @len: Length of buf in octets 453 * @wait_time: How many msec to wait for a response frame 454 * Returns: 0 on success, -1 on failure 455 * 456 * The Action frame may not be transmitted immediately and the status 457 * of the transmission must be reported by calling 458 * p2p_send_action_cb() once the frame has either been transmitted or 459 * it has been dropped due to excessive retries or other failure to 460 * transmit. 461 */ 462 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 463 const u8 *src, const u8 *bssid, const u8 *buf, 464 size_t len, unsigned int wait_time); 465 466 /** 467 * send_action_done - Notify that Action frame sequence was completed 468 * @ctx: Callback context from cb_ctx 469 * 470 * This function is called when the Action frame sequence that was 471 * started with send_action() has been completed, i.e., when there is 472 * no need to wait for a response from the destination peer anymore. 473 */ 474 void (*send_action_done)(void *ctx); 475 476 /** 477 * start_listen - Start Listen state 478 * @ctx: Callback context from cb_ctx 479 * @freq: Frequency of the listen channel in MHz 480 * @duration: Duration for the Listen state in milliseconds 481 * @probe_resp_ie: IE(s) to be added to Probe Response frames 482 * Returns: 0 on success, -1 on failure 483 * 484 * This Listen state may not start immediately since the driver may 485 * have other pending operations to complete first. Once the Listen 486 * state has started, p2p_listen_cb() must be called to notify the P2P 487 * module. Once the Listen state is stopped, p2p_listen_end() must be 488 * called to notify the P2P module that the driver is not in the Listen 489 * state anymore. 490 * 491 * If the send_probe_resp() is not used for generating the response, 492 * the IEs from probe_resp_ie need to be added to the end of the Probe 493 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 494 * information can be ignored. 495 */ 496 int (*start_listen)(void *ctx, unsigned int freq, 497 unsigned int duration, 498 const struct wpabuf *probe_resp_ie); 499 /** 500 * stop_listen - Stop Listen state 501 * @ctx: Callback context from cb_ctx 502 * 503 * This callback can be used to stop a Listen state operation that was 504 * previously requested with start_listen(). 505 */ 506 void (*stop_listen)(void *ctx); 507 508 /** 509 * get_noa - Get current Notice of Absence attribute payload 510 * @ctx: Callback context from cb_ctx 511 * @interface_addr: P2P Interface Address of the GO 512 * @buf: Buffer for returning NoA 513 * @buf_len: Buffer length in octets 514 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 515 * advertized, or -1 on failure 516 * 517 * This function is used to fetch the current Notice of Absence 518 * attribute value from GO. 519 */ 520 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 521 size_t buf_len); 522 523 /* Callbacks to notify events to upper layer management entity */ 524 525 /** 526 * dev_found - Notification of a found P2P Device 527 * @ctx: Callback context from cb_ctx 528 * @addr: Source address of the message triggering this notification 529 * @info: P2P peer information 530 * @new_device: Inform if the peer is newly found 531 * 532 * This callback is used to notify that a new P2P Device has been 533 * found. This may happen, e.g., during Search state based on scan 534 * results or during Listen state based on receive Probe Request and 535 * Group Owner Negotiation Request. 536 */ 537 void (*dev_found)(void *ctx, const u8 *addr, 538 const struct p2p_peer_info *info, 539 int new_device); 540 541 /** 542 * dev_lost - Notification of a lost P2P Device 543 * @ctx: Callback context from cb_ctx 544 * @dev_addr: P2P Device Address of the lost P2P Device 545 * 546 * This callback is used to notify that a P2P Device has been deleted. 547 */ 548 void (*dev_lost)(void *ctx, const u8 *dev_addr); 549 550 /** 551 * find_stopped - Notification of a p2p_find operation stopping 552 * @ctx: Callback context from cb_ctx 553 */ 554 void (*find_stopped)(void *ctx); 555 556 /** 557 * go_neg_req_rx - Notification of a receive GO Negotiation Request 558 * @ctx: Callback context from cb_ctx 559 * @src: Source address of the message triggering this notification 560 * @dev_passwd_id: WPS Device Password ID 561 * 562 * This callback is used to notify that a P2P Device is requesting 563 * group owner negotiation with us, but we do not have all the 564 * necessary information to start GO Negotiation. This indicates that 565 * the local user has not authorized the connection yet by providing a 566 * PIN or PBC button press. This information can be provided with a 567 * call to p2p_connect(). 568 */ 569 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 570 571 /** 572 * go_neg_completed - Notification of GO Negotiation results 573 * @ctx: Callback context from cb_ctx 574 * @res: GO Negotiation results 575 * 576 * This callback is used to notify that Group Owner Negotiation has 577 * been completed. Non-zero struct p2p_go_neg_results::status indicates 578 * failed negotiation. In case of success, this function is responsible 579 * for creating a new group interface (or using the existing interface 580 * depending on driver features), setting up the group interface in 581 * proper mode based on struct p2p_go_neg_results::role_go and 582 * initializing WPS provisioning either as a Registrar (if GO) or as an 583 * Enrollee. Successful WPS provisioning must be indicated by calling 584 * p2p_wps_success_cb(). The callee is responsible for timing out group 585 * formation if WPS provisioning cannot be completed successfully 586 * within 15 seconds. 587 */ 588 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 589 590 /** 591 * sd_request - Callback on Service Discovery Request 592 * @ctx: Callback context from cb_ctx 593 * @freq: Frequency (in MHz) of the channel 594 * @sa: Source address of the request 595 * @dialog_token: Dialog token 596 * @update_indic: Service Update Indicator from the source of request 597 * @tlvs: P2P Service Request TLV(s) 598 * @tlvs_len: Length of tlvs buffer in octets 599 * 600 * This callback is used to indicate reception of a service discovery 601 * request. Response to the query must be indicated by calling 602 * p2p_sd_response() with the context information from the arguments to 603 * this callback function. 604 * 605 * This callback handler can be set to %NULL to indicate that service 606 * discovery is not supported. 607 */ 608 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 609 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 610 611 /** 612 * sd_response - Callback on Service Discovery Response 613 * @ctx: Callback context from cb_ctx 614 * @sa: Source address of the request 615 * @update_indic: Service Update Indicator from the source of response 616 * @tlvs: P2P Service Response TLV(s) 617 * @tlvs_len: Length of tlvs buffer in octets 618 * 619 * This callback is used to indicate reception of a service discovery 620 * response. This callback handler can be set to %NULL if no service 621 * discovery requests are used. The information provided with this call 622 * is replies to the queries scheduled with p2p_sd_request(). 623 */ 624 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 625 const u8 *tlvs, size_t tlvs_len); 626 627 /** 628 * prov_disc_req - Callback on Provisiong Discovery Request 629 * @ctx: Callback context from cb_ctx 630 * @peer: Source address of the request 631 * @config_methods: Requested WPS Config Method 632 * @dev_addr: P2P Device Address of the found P2P Device 633 * @pri_dev_type: Primary Device Type 634 * @dev_name: Device Name 635 * @supp_config_methods: Supported configuration Methods 636 * @dev_capab: Device Capabilities 637 * @group_capab: Group Capabilities 638 * @group_id: P2P Group ID (or %NULL if not included) 639 * @group_id_len: Length of P2P Group ID 640 * 641 * This callback is used to indicate reception of a Provision Discovery 642 * Request frame that the P2P module accepted. 643 */ 644 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 645 const u8 *dev_addr, const u8 *pri_dev_type, 646 const char *dev_name, u16 supp_config_methods, 647 u8 dev_capab, u8 group_capab, 648 const u8 *group_id, size_t group_id_len); 649 650 /** 651 * prov_disc_resp - Callback on Provisiong Discovery Response 652 * @ctx: Callback context from cb_ctx 653 * @peer: Source address of the response 654 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 655 * 656 * This callback is used to indicate reception of a Provision Discovery 657 * Response frame for a pending request scheduled with 658 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 659 * provision discovery is not used. 660 */ 661 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 662 663 /** 664 * prov_disc_fail - Callback on Provision Discovery failure 665 * @ctx: Callback context from cb_ctx 666 * @peer: Source address of the response 667 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 668 * 669 * This callback is used to indicate either a failure or no response 670 * to an earlier provision discovery request. 671 * 672 * This callback handler can be set to %NULL if provision discovery 673 * is not used or failures do not need to be indicated. 674 */ 675 void (*prov_disc_fail)(void *ctx, const u8 *peer, 676 enum p2p_prov_disc_status status); 677 678 /** 679 * invitation_process - Optional callback for processing Invitations 680 * @ctx: Callback context from cb_ctx 681 * @sa: Source address of the Invitation Request 682 * @bssid: P2P Group BSSID from the request or %NULL if not included 683 * @go_dev_addr: GO Device Address from P2P Group ID 684 * @ssid: SSID from P2P Group ID 685 * @ssid_len: Length of ssid buffer in octets 686 * @go: Variable for returning whether the local end is GO in the group 687 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 688 * @force_freq: Variable for returning forced frequency for the group 689 * @persistent_group: Whether this is an invitation to reinvoke a 690 * persistent group (instead of invitation to join an active 691 * group) 692 * @channels: Available operating channels for the group 693 * Returns: Status code (P2P_SC_*) 694 * 695 * This optional callback can be used to implement persistent reconnect 696 * by allowing automatic restarting of persistent groups without user 697 * interaction. If this callback is not implemented (i.e., is %NULL), 698 * the received Invitation Request frames are replied with 699 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 700 * invitation_result() callback. 701 * 702 * If the requested parameters are acceptable and the group is known, 703 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 704 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 705 * can be returned if there is not enough data to provide immediate 706 * response, i.e., if some sort of user interaction is needed. The 707 * invitation_received() callback will be called in that case 708 * immediately after this call. 709 */ 710 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 711 const u8 *go_dev_addr, const u8 *ssid, 712 size_t ssid_len, int *go, u8 *group_bssid, 713 int *force_freq, int persistent_group, 714 const struct p2p_channels *channels); 715 716 /** 717 * invitation_received - Callback on Invitation Request RX 718 * @ctx: Callback context from cb_ctx 719 * @sa: Source address of the Invitation Request 720 * @bssid: P2P Group BSSID or %NULL if not received 721 * @ssid: SSID of the group 722 * @ssid_len: Length of ssid in octets 723 * @go_dev_addr: GO Device Address 724 * @status: Response Status 725 * @op_freq: Operational frequency for the group 726 * 727 * This callback is used to indicate sending of an Invitation Response 728 * for a received Invitation Request. If status == 0 (success), the 729 * upper layer code is responsible for starting the group. status == 1 730 * indicates need to get user authorization for the group. Other status 731 * values indicate that the invitation request was rejected. 732 */ 733 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 734 const u8 *ssid, size_t ssid_len, 735 const u8 *go_dev_addr, u8 status, 736 int op_freq); 737 738 /** 739 * invitation_result - Callback on Invitation result 740 * @ctx: Callback context from cb_ctx 741 * @status: Negotiation result (Status Code) 742 * @bssid: P2P Group BSSID or %NULL if not received 743 * @channels: Available operating channels for the group 744 * @addr: Peer address 745 * 746 * This callback is used to indicate result of an Invitation procedure 747 * started with a call to p2p_invite(). The indicated status code is 748 * the value received from the peer in Invitation Response with 0 749 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 750 * local failure in transmitting the Invitation Request. 751 */ 752 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 753 const struct p2p_channels *channels, 754 const u8 *addr); 755 756 /** 757 * go_connected - Check whether we are connected to a GO 758 * @ctx: Callback context from cb_ctx 759 * @dev_addr: P2P Device Address of a GO 760 * Returns: 1 if we are connected as a P2P client to the specified GO 761 * or 0 if not. 762 */ 763 int (*go_connected)(void *ctx, const u8 *dev_addr); 764 }; 765 766 767 /* P2P module initialization/deinitialization */ 768 769 /** 770 * p2p_init - Initialize P2P module 771 * @cfg: P2P module configuration 772 * Returns: Pointer to private data or %NULL on failure 773 * 774 * This function is used to initialize global P2P module context (one per 775 * device). The P2P module will keep a copy of the configuration data, so the 776 * caller does not need to maintain this structure. However, the callback 777 * functions and the context parameters to them must be kept available until 778 * the P2P module is deinitialized with p2p_deinit(). 779 */ 780 struct p2p_data * p2p_init(const struct p2p_config *cfg); 781 782 /** 783 * p2p_deinit - Deinitialize P2P module 784 * @p2p: P2P module context from p2p_init() 785 */ 786 void p2p_deinit(struct p2p_data *p2p); 787 788 /** 789 * p2p_flush - Flush P2P module state 790 * @p2p: P2P module context from p2p_init() 791 * 792 * This command removes the P2P module state like peer device entries. 793 */ 794 void p2p_flush(struct p2p_data *p2p); 795 796 /** 797 * p2p_unauthorize - Unauthorize the specified peer device 798 * @p2p: P2P module context from p2p_init() 799 * @addr: P2P peer entry to be unauthorized 800 * Returns: 0 on success, -1 on failure 801 * 802 * This command removes any connection authorization from the specified P2P 803 * peer device address. This can be used, e.g., to cancel effect of a previous 804 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 805 * GO Negotiation. 806 */ 807 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 808 809 /** 810 * p2p_set_dev_name - Set device name 811 * @p2p: P2P module context from p2p_init() 812 * Returns: 0 on success, -1 on failure 813 * 814 * This function can be used to update the P2P module configuration with 815 * information that was not available at the time of the p2p_init() call. 816 */ 817 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 818 819 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 820 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 821 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 822 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 823 824 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 825 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 826 827 /** 828 * p2p_set_pri_dev_type - Set primary device type 829 * @p2p: P2P module context from p2p_init() 830 * Returns: 0 on success, -1 on failure 831 * 832 * This function can be used to update the P2P module configuration with 833 * information that was not available at the time of the p2p_init() call. 834 */ 835 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 836 837 /** 838 * p2p_set_sec_dev_types - Set secondary device types 839 * @p2p: P2P module context from p2p_init() 840 * Returns: 0 on success, -1 on failure 841 * 842 * This function can be used to update the P2P module configuration with 843 * information that was not available at the time of the p2p_init() call. 844 */ 845 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 846 size_t num_dev_types); 847 848 int p2p_set_country(struct p2p_data *p2p, const char *country); 849 850 851 /* Commands from upper layer management entity */ 852 853 enum p2p_discovery_type { 854 P2P_FIND_START_WITH_FULL, 855 P2P_FIND_ONLY_SOCIAL, 856 P2P_FIND_PROGRESSIVE 857 }; 858 859 /** 860 * p2p_find - Start P2P Find (Device Discovery) 861 * @p2p: P2P module context from p2p_init() 862 * @timeout: Timeout for find operation in seconds or 0 for no timeout 863 * @type: Device Discovery type 864 * @num_req_dev_types: Number of requested device types 865 * @req_dev_types: Requested device types array, must be an array 866 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 867 * requested device types. 868 * @dev_id: Device ID to search for or %NULL to find all devices 869 * @search_delay: Extra delay in milliseconds between search iterations 870 * Returns: 0 on success, -1 on failure 871 */ 872 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 873 enum p2p_discovery_type type, 874 unsigned int num_req_dev_types, const u8 *req_dev_types, 875 const u8 *dev_id, unsigned int search_delay); 876 877 /** 878 * p2p_stop_find - Stop P2P Find (Device Discovery) 879 * @p2p: P2P module context from p2p_init() 880 */ 881 void p2p_stop_find(struct p2p_data *p2p); 882 883 /** 884 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 885 * @p2p: P2P module context from p2p_init() 886 * @freq: Frequency in MHz for next operation 887 * 888 * This is like p2p_stop_find(), but Listen state is not stopped if we are 889 * already on the same frequency. 890 */ 891 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 892 893 /** 894 * p2p_listen - Start P2P Listen state for specified duration 895 * @p2p: P2P module context from p2p_init() 896 * @timeout: Listen state duration in milliseconds 897 * Returns: 0 on success, -1 on failure 898 * 899 * This function can be used to request the P2P module to keep the device 900 * discoverable on the listen channel for an extended set of time. At least in 901 * its current form, this is mainly used for testing purposes and may not be of 902 * much use for normal P2P operations. 903 */ 904 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 905 906 /** 907 * p2p_stop_listen - Stop P2P Listen 908 * @p2p: P2P module context from p2p_init() 909 */ 910 void p2p_stop_listen(struct p2p_data *p2p); 911 912 /** 913 * p2p_connect - Start P2P group formation (GO negotiation) 914 * @p2p: P2P module context from p2p_init() 915 * @peer_addr: MAC address of the peer P2P client 916 * @wps_method: WPS method to be used in provisioning 917 * @go_intent: Local GO intent value (1..15) 918 * @own_interface_addr: Intended interface address to use with the group 919 * @force_freq: The only allowed channel frequency in MHz or 0 920 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 921 * persistent group without persistent reconnect, 2 = persistent group with 922 * persistent reconnect) 923 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 924 * a new SSID 925 * @force_ssid_len: Length of $force_ssid buffer 926 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 927 * Negotiation as an interoperability workaround when initiating group 928 * formation 929 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 930 * force_freq == 0) 931 * Returns: 0 on success, -1 on failure 932 */ 933 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 934 enum p2p_wps_method wps_method, 935 int go_intent, const u8 *own_interface_addr, 936 unsigned int force_freq, int persistent_group, 937 const u8 *force_ssid, size_t force_ssid_len, 938 int pd_before_go_neg, unsigned int pref_freq); 939 940 /** 941 * p2p_authorize - Authorize P2P group formation (GO negotiation) 942 * @p2p: P2P module context from p2p_init() 943 * @peer_addr: MAC address of the peer P2P client 944 * @wps_method: WPS method to be used in provisioning 945 * @go_intent: Local GO intent value (1..15) 946 * @own_interface_addr: Intended interface address to use with the group 947 * @force_freq: The only allowed channel frequency in MHz or 0 948 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 949 * persistent group without persistent reconnect, 2 = persistent group with 950 * persistent reconnect) 951 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 952 * a new SSID 953 * @force_ssid_len: Length of $force_ssid buffer 954 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 955 * force_freq == 0) 956 * Returns: 0 on success, -1 on failure 957 * 958 * This is like p2p_connect(), but the actual group negotiation is not 959 * initiated automatically, i.e., the other end is expected to do that. 960 */ 961 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 962 enum p2p_wps_method wps_method, 963 int go_intent, const u8 *own_interface_addr, 964 unsigned int force_freq, int persistent_group, 965 const u8 *force_ssid, size_t force_ssid_len, 966 unsigned int pref_freq); 967 968 /** 969 * p2p_reject - Reject peer device (explicitly block connection attempts) 970 * @p2p: P2P module context from p2p_init() 971 * @peer_addr: MAC address of the peer P2P client 972 * Returns: 0 on success, -1 on failure 973 */ 974 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 975 976 /** 977 * p2p_prov_disc_req - Send Provision Discovery Request 978 * @p2p: P2P module context from p2p_init() 979 * @peer_addr: MAC address of the peer P2P client 980 * @config_methods: WPS Config Methods value (only one bit set) 981 * @join: Whether this is used by a client joining an active group 982 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 983 * @user_initiated_pd: Flag to indicate if initiated by user or not 984 * Returns: 0 on success, -1 on failure 985 * 986 * This function can be used to request a discovered P2P peer to display a PIN 987 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 988 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 989 * is transmitted once immediately and if no response is received, the frame 990 * will be sent again whenever the target device is discovered during device 991 * dsicovery (start with a p2p_find() call). Response from the peer is 992 * indicated with the p2p_config::prov_disc_resp() callback. 993 */ 994 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 995 u16 config_methods, int join, int force_freq, 996 int user_initiated_pd); 997 998 /** 999 * p2p_sd_request - Schedule a service discovery query 1000 * @p2p: P2P module context from p2p_init() 1001 * @dst: Destination peer or %NULL to apply for all peers 1002 * @tlvs: P2P Service Query TLV(s) 1003 * Returns: Reference to the query or %NULL on failure 1004 * 1005 * Response to the query is indicated with the p2p_config::sd_response() 1006 * callback. 1007 */ 1008 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1009 const struct wpabuf *tlvs); 1010 1011 #ifdef CONFIG_WIFI_DISPLAY 1012 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1013 const struct wpabuf *tlvs); 1014 #endif /* CONFIG_WIFI_DISPLAY */ 1015 1016 /** 1017 * p2p_sd_cancel_request - Cancel a pending service discovery query 1018 * @p2p: P2P module context from p2p_init() 1019 * @req: Query reference from p2p_sd_request() 1020 * Returns: 0 if request for cancelled; -1 if not found 1021 */ 1022 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1023 1024 /** 1025 * p2p_sd_response - Send response to a service discovery query 1026 * @p2p: P2P module context from p2p_init() 1027 * @freq: Frequency from p2p_config::sd_request() callback 1028 * @dst: Destination address from p2p_config::sd_request() callback 1029 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1030 * @resp_tlvs: P2P Service Response TLV(s) 1031 * 1032 * This function is called as a response to the request indicated with 1033 * p2p_config::sd_request() callback. 1034 */ 1035 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1036 u8 dialog_token, const struct wpabuf *resp_tlvs); 1037 1038 /** 1039 * p2p_sd_service_update - Indicate a change in local services 1040 * @p2p: P2P module context from p2p_init() 1041 * 1042 * This function needs to be called whenever there is a change in availability 1043 * of the local services. This will increment the Service Update Indicator 1044 * value which will be used in SD Request and Response frames. 1045 */ 1046 void p2p_sd_service_update(struct p2p_data *p2p); 1047 1048 1049 enum p2p_invite_role { 1050 P2P_INVITE_ROLE_GO, 1051 P2P_INVITE_ROLE_ACTIVE_GO, 1052 P2P_INVITE_ROLE_CLIENT 1053 }; 1054 1055 /** 1056 * p2p_invite - Invite a P2P Device into a group 1057 * @p2p: P2P module context from p2p_init() 1058 * @peer: Device Address of the peer P2P Device 1059 * @role: Local role in the group 1060 * @bssid: Group BSSID or %NULL if not known 1061 * @ssid: Group SSID 1062 * @ssid_len: Length of ssid in octets 1063 * @force_freq: The only allowed channel frequency in MHz or 0 1064 * @go_dev_addr: Forced GO Device Address or %NULL if none 1065 * @persistent_group: Whether this is to reinvoke a persistent group 1066 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1067 * force_freq == 0) 1068 * Returns: 0 on success, -1 on failure 1069 */ 1070 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1071 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1072 unsigned int force_freq, const u8 *go_dev_addr, 1073 int persistent_group, unsigned int pref_freq); 1074 1075 /** 1076 * p2p_presence_req - Request GO presence 1077 * @p2p: P2P module context from p2p_init() 1078 * @go_interface_addr: GO P2P Interface Address 1079 * @own_interface_addr: Own P2P Interface Address for this group 1080 * @freq: Group operating frequence (in MHz) 1081 * @duration1: Preferred presence duration in microseconds 1082 * @interval1: Preferred presence interval in microseconds 1083 * @duration2: Acceptable presence duration in microseconds 1084 * @interval2: Acceptable presence interval in microseconds 1085 * Returns: 0 on success, -1 on failure 1086 * 1087 * If both duration and interval values are zero, the parameter pair is not 1088 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1089 */ 1090 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1091 const u8 *own_interface_addr, unsigned int freq, 1092 u32 duration1, u32 interval1, u32 duration2, 1093 u32 interval2); 1094 1095 /** 1096 * p2p_ext_listen - Set Extended Listen Timing 1097 * @p2p: P2P module context from p2p_init() 1098 * @freq: Group operating frequence (in MHz) 1099 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1100 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1101 * Returns: 0 on success, -1 on failure 1102 * 1103 * This function can be used to enable or disable (period = interval = 0) 1104 * Extended Listen Timing. When enabled, the P2P Device will become 1105 * discoverable (go into Listen State) every @interval milliseconds for at 1106 * least @period milliseconds. 1107 */ 1108 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1109 unsigned int interval); 1110 1111 /* Event notifications from upper layer management operations */ 1112 1113 /** 1114 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1115 * @p2p: P2P module context from p2p_init() 1116 * @mac_addr: Peer address 1117 * 1118 * This function is used to report successfully completed WPS provisioning 1119 * during group formation in both GO/Registrar and client/Enrollee roles. 1120 */ 1121 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1122 1123 /** 1124 * p2p_group_formation_failed - Report failed WPS provisioning 1125 * @p2p: P2P module context from p2p_init() 1126 * 1127 * This function is used to report failed group formation. This can happen 1128 * either due to failed WPS provisioning or due to 15 second timeout during 1129 * the provisioning phase. 1130 */ 1131 void p2p_group_formation_failed(struct p2p_data *p2p); 1132 1133 /** 1134 * p2p_get_provisioning_info - Get any stored provisioning info 1135 * @p2p: P2P module context from p2p_init() 1136 * @addr: Peer P2P Device Address 1137 * Returns: WPS provisioning information (WPS config method) or 0 if no 1138 * information is available 1139 * 1140 * This function is used to retrieve stored WPS provisioning info for the given 1141 * peer. 1142 */ 1143 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1144 1145 /** 1146 * p2p_clear_provisioning_info - Clear any stored provisioning info 1147 * @p2p: P2P module context from p2p_init() 1148 * @iface_addr: Peer P2P Device Address 1149 * 1150 * This function is used to clear stored WPS provisioning info for the given 1151 * peer. 1152 */ 1153 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1154 1155 1156 /* Event notifications from lower layer driver operations */ 1157 1158 /** 1159 * enum p2p_probe_req_status 1160 * 1161 * @P2P_PREQ_MALFORMED: frame was not well-formed 1162 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1163 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1164 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1165 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1166 */ 1167 enum p2p_probe_req_status { 1168 P2P_PREQ_MALFORMED, 1169 P2P_PREQ_NOT_LISTEN, 1170 P2P_PREQ_NOT_P2P, 1171 P2P_PREQ_NOT_PROCESSED, 1172 P2P_PREQ_PROCESSED 1173 }; 1174 1175 /** 1176 * p2p_probe_req_rx - Report reception of a Probe Request frame 1177 * @p2p: P2P module context from p2p_init() 1178 * @addr: Source MAC address 1179 * @dst: Destination MAC address if available or %NULL 1180 * @bssid: BSSID if available or %NULL 1181 * @ie: Information elements from the Probe Request frame body 1182 * @ie_len: Length of ie buffer in octets 1183 * Returns: value indicating the type and status of the probe request 1184 */ 1185 enum p2p_probe_req_status 1186 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1187 const u8 *bssid, const u8 *ie, size_t ie_len); 1188 1189 /** 1190 * p2p_rx_action - Report received Action frame 1191 * @p2p: P2P module context from p2p_init() 1192 * @da: Destination address of the received Action frame 1193 * @sa: Source address of the received Action frame 1194 * @bssid: Address 3 of the received Action frame 1195 * @category: Category of the received Action frame 1196 * @data: Action frame body after the Category field 1197 * @len: Length of the data buffer in octets 1198 * @freq: Frequency (in MHz) on which the frame was received 1199 */ 1200 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1201 const u8 *bssid, u8 category, 1202 const u8 *data, size_t len, int freq); 1203 1204 /** 1205 * p2p_scan_res_handler - Indicate a P2P scan results 1206 * @p2p: P2P module context from p2p_init() 1207 * @bssid: BSSID of the scan result 1208 * @freq: Frequency of the channel on which the device was found in MHz 1209 * @rx_time: Time when the result was received 1210 * @level: Signal level (signal strength of the received Beacon/Probe Response 1211 * frame) 1212 * @ies: Pointer to IEs from the scan result 1213 * @ies_len: Length of the ies buffer 1214 * Returns: 0 to continue or 1 to stop scan result indication 1215 * 1216 * This function is called to indicate a scan result entry with P2P IE from a 1217 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1218 * the actual scan process (i.e., whenever a new device is found) or as a 1219 * sequence of calls after the full scan has been completed. The former option 1220 * can result in optimized operations, but may not be supported by all 1221 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1222 * but it is recommended to include all IEs received from the device. The 1223 * caller does not need to check that the IEs contain a P2P IE before calling 1224 * this function since frames will be filtered internally if needed. 1225 * 1226 * This function will return 1 if it wants to stop scan result iteration (and 1227 * scan in general if it is still in progress). This is used to allow faster 1228 * start of a pending operation, e.g., to start a pending GO negotiation. 1229 */ 1230 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1231 struct os_time *rx_time, int level, const u8 *ies, 1232 size_t ies_len); 1233 1234 /** 1235 * p2p_scan_res_handled - Indicate end of scan results 1236 * @p2p: P2P module context from p2p_init() 1237 * 1238 * This function is called to indicate that all P2P scan results from a scan 1239 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1240 * function must be called as a response to successful 1241 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1242 * calls stopped iteration. 1243 */ 1244 void p2p_scan_res_handled(struct p2p_data *p2p); 1245 1246 enum p2p_send_action_result { 1247 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1248 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1249 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1250 }; 1251 1252 /** 1253 * p2p_send_action_cb - Notify TX status of an Action frame 1254 * @p2p: P2P module context from p2p_init() 1255 * @freq: Channel frequency in MHz 1256 * @dst: Destination MAC address (Address 1) 1257 * @src: Source MAC address (Address 2) 1258 * @bssid: BSSID (Address 3) 1259 * @result: Result of the transmission attempt 1260 * 1261 * This function is used to indicate the result of an Action frame transmission 1262 * that was requested with struct p2p_config::send_action() callback. 1263 */ 1264 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1265 const u8 *src, const u8 *bssid, 1266 enum p2p_send_action_result result); 1267 1268 /** 1269 * p2p_listen_cb - Indicate the start of a requested Listen state 1270 * @p2p: P2P module context from p2p_init() 1271 * @freq: Listen channel frequency in MHz 1272 * @duration: Duration for the Listen state in milliseconds 1273 * 1274 * This function is used to indicate that a Listen state requested with 1275 * struct p2p_config::start_listen() callback has started. 1276 */ 1277 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1278 unsigned int duration); 1279 1280 /** 1281 * p2p_listen_end - Indicate the end of a requested Listen state 1282 * @p2p: P2P module context from p2p_init() 1283 * @freq: Listen channel frequency in MHz 1284 * Returns: 0 if no operations were started, 1 if an operation was started 1285 * 1286 * This function is used to indicate that a Listen state requested with 1287 * struct p2p_config::start_listen() callback has ended. 1288 */ 1289 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1290 1291 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1292 const u8 *ie, size_t ie_len); 1293 1294 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1295 const u8 *ie, size_t ie_len); 1296 1297 1298 /* Per-group P2P state for GO */ 1299 1300 struct p2p_group; 1301 1302 /** 1303 * struct p2p_group_config - P2P group configuration 1304 * 1305 * This configuration is provided to the P2P module during initialization of 1306 * the per-group information with p2p_group_init(). 1307 */ 1308 struct p2p_group_config { 1309 /** 1310 * persistent_group - Whether the group is persistent 1311 * 0 = not a persistent group 1312 * 1 = persistent group without persistent reconnect 1313 * 2 = persistent group with persistent reconnect 1314 */ 1315 int persistent_group; 1316 1317 /** 1318 * interface_addr - P2P Interface Address of the group 1319 */ 1320 u8 interface_addr[ETH_ALEN]; 1321 1322 /** 1323 * max_clients - Maximum number of clients in the group 1324 */ 1325 unsigned int max_clients; 1326 1327 /** 1328 * ssid - Group SSID 1329 */ 1330 u8 ssid[32]; 1331 1332 /** 1333 * ssid_len - Length of SSID 1334 */ 1335 size_t ssid_len; 1336 1337 /** 1338 * cb_ctx - Context to use with callback functions 1339 */ 1340 void *cb_ctx; 1341 1342 /** 1343 * ie_update - Notification of IE update 1344 * @ctx: Callback context from cb_ctx 1345 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1346 * @proberesp_ies: P2P Ie for Probe Response frames 1347 * 1348 * P2P module uses this callback function to notify whenever the P2P IE 1349 * in Beacon or Probe Response frames should be updated based on group 1350 * events. 1351 * 1352 * The callee is responsible for freeing the returned buffer(s) with 1353 * wpabuf_free(). 1354 */ 1355 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1356 struct wpabuf *proberesp_ies); 1357 1358 /** 1359 * idle_update - Notification of changes in group idle state 1360 * @ctx: Callback context from cb_ctx 1361 * @idle: Whether the group is idle (no associated stations) 1362 */ 1363 void (*idle_update)(void *ctx, int idle); 1364 }; 1365 1366 /** 1367 * p2p_group_init - Initialize P2P group 1368 * @p2p: P2P module context from p2p_init() 1369 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1370 * Returns: Pointer to private data or %NULL on failure 1371 * 1372 * This function is used to initialize per-group P2P module context. Currently, 1373 * this is only used to manage GO functionality and P2P clients do not need to 1374 * create an instance of this per-group information. 1375 */ 1376 struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1377 struct p2p_group_config *config); 1378 1379 /** 1380 * p2p_group_deinit - Deinitialize P2P group 1381 * @group: P2P group context from p2p_group_init() 1382 */ 1383 void p2p_group_deinit(struct p2p_group *group); 1384 1385 /** 1386 * p2p_group_notif_assoc - Notification of P2P client association with GO 1387 * @group: P2P group context from p2p_group_init() 1388 * @addr: Interface address of the P2P client 1389 * @ie: IEs from the (Re)association Request frame 1390 * @len: Length of the ie buffer in octets 1391 * Returns: 0 on success, -1 on failure 1392 */ 1393 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1394 const u8 *ie, size_t len); 1395 1396 /** 1397 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1398 * @group: P2P group context from p2p_group_init() 1399 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1400 * Returns: P2P IE for (Re)association Response or %NULL on failure 1401 * 1402 * The caller is responsible for freeing the returned buffer with 1403 * wpabuf_free(). 1404 */ 1405 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1406 1407 /** 1408 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1409 * @group: P2P group context from p2p_group_init() 1410 * @addr: Interface address of the P2P client 1411 */ 1412 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1413 1414 /** 1415 * p2p_group_notif_formation_done - Notification of completed group formation 1416 * @group: P2P group context from p2p_group_init() 1417 */ 1418 void p2p_group_notif_formation_done(struct p2p_group *group); 1419 1420 /** 1421 * p2p_group_notif_noa - Notification of NoA change 1422 * @group: P2P group context from p2p_group_init() 1423 * @noa: Notice of Absence attribute payload, %NULL if none 1424 * @noa_len: Length of noa buffer in octets 1425 * Returns: 0 on success, -1 on failure 1426 * 1427 * Notify the P2P group management about a new NoA contents. This will be 1428 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1429 * the group information. 1430 */ 1431 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1432 size_t noa_len); 1433 1434 /** 1435 * p2p_group_match_dev_type - Match device types in group with requested type 1436 * @group: P2P group context from p2p_group_init() 1437 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1438 * Returns: 1 on match, 0 on mismatch 1439 * 1440 * This function can be used to match the Requested Device Type attribute in 1441 * WPS IE with the device types of a group member for deciding whether a GO 1442 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1443 * is not requested any specific device type. 1444 */ 1445 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1446 1447 /** 1448 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1449 */ 1450 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1451 1452 /** 1453 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1454 * @group: P2P group context from p2p_group_init() 1455 * Returns: 0 on success (frame scheduled); -1 if client was not found 1456 */ 1457 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1458 const u8 *searching_dev, int rx_freq); 1459 1460 1461 /* Generic helper functions */ 1462 1463 /** 1464 * p2p_ie_text - Build text format description of P2P IE 1465 * @p2p_ie: P2P IE 1466 * @buf: Buffer for returning text 1467 * @end: Pointer to the end of the buf area 1468 * Returns: Number of octets written to the buffer or -1 on failure 1469 * 1470 * This function can be used to parse P2P IE contents into text format 1471 * field=value lines. 1472 */ 1473 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1474 1475 /** 1476 * p2p_scan_result_text - Build text format description of P2P IE 1477 * @ies: Information elements from scan results 1478 * @ies_len: ies buffer length in octets 1479 * @buf: Buffer for returning text 1480 * @end: Pointer to the end of the buf area 1481 * Returns: Number of octets written to the buffer or -1 on failure 1482 * 1483 * This function can be used to parse P2P IE contents into text format 1484 * field=value lines. 1485 */ 1486 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1487 1488 /** 1489 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1490 * P2P IE 1491 * @p2p_ie: P2P IE 1492 * @dev_addr: Buffer for returning P2P Device Address 1493 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1494 */ 1495 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1496 1497 /** 1498 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1499 * @ies: Information elements from scan results 1500 * @ies_len: ies buffer length in octets 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 */ 1504 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1505 1506 /** 1507 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1508 * @p2p: P2P module context from p2p_init() 1509 * @bssid: BSSID 1510 * @buf: Buffer for writing the P2P IE 1511 * @len: Maximum buf length in octets 1512 * @p2p_group: Whether this is for association with a P2P GO 1513 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1514 * Returns: Number of octets written into buf or -1 on failure 1515 */ 1516 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1517 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1518 1519 /** 1520 * p2p_scan_ie - Build P2P IE for Probe Request 1521 * @p2p: P2P module context from p2p_init() 1522 * @ies: Buffer for writing P2P IE 1523 * @dev_id: Device ID to search for or %NULL for any 1524 */ 1525 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1526 1527 /** 1528 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1529 * @p2p: P2P module context from p2p_init() 1530 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1531 */ 1532 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1533 1534 /** 1535 * p2p_go_params - Generate random P2P group parameters 1536 * @p2p: P2P module context from p2p_init() 1537 * @params: Buffer for parameters 1538 * Returns: 0 on success, -1 on failure 1539 */ 1540 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1541 1542 /** 1543 * p2p_get_group_capab - Get Group Capability from P2P IE data 1544 * @p2p_ie: P2P IE(s) contents 1545 * Returns: Group Capability 1546 */ 1547 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1548 1549 /** 1550 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1551 * @p2p_ie: P2P IE(s) contents 1552 * Returns: 0 if cross connection is allow, 1 if not 1553 */ 1554 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1555 1556 /** 1557 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1558 * @p2p_ie: P2P IE(s) contents 1559 * Returns: Pointer to P2P Device Address or %NULL if not included 1560 */ 1561 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1562 1563 /** 1564 * p2p_get_peer_info - Get P2P peer information 1565 * @p2p: P2P module context from p2p_init() 1566 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1567 * @next: Whether to select the peer entry following the one indicated by addr 1568 * Returns: Pointer to peer info or %NULL if not found 1569 */ 1570 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1571 const u8 *addr, int next); 1572 1573 /** 1574 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1575 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1576 * @buf: Buffer for returning text 1577 * @buflen: Maximum buffer length 1578 * Returns: Number of octets written to the buffer or -1 on failure 1579 * 1580 * Note: This information is internal to the P2P module and subject to change. 1581 * As such, this should not really be used by external programs for purposes 1582 * other than debugging. 1583 */ 1584 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1585 char *buf, size_t buflen); 1586 1587 /** 1588 * p2p_peer_known - Check whether P2P peer is known 1589 * @p2p: P2P module context from p2p_init() 1590 * @addr: P2P Device Address of the peer 1591 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1592 */ 1593 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1594 1595 /** 1596 * p2p_set_client_discoverability - Set client discoverability capability 1597 * @p2p: P2P module context from p2p_init() 1598 * @enabled: Whether client discoverability will be enabled 1599 * 1600 * This function can be used to disable (and re-enable) client discoverability. 1601 * This capability is enabled by default and should not be disabled in normal 1602 * use cases, i.e., this is mainly for testing purposes. 1603 */ 1604 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1605 1606 /** 1607 * p2p_set_managed_oper - Set managed P2P Device operations capability 1608 * @p2p: P2P module context from p2p_init() 1609 * @enabled: Whether managed P2P Device operations will be enabled 1610 */ 1611 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1612 1613 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1614 1615 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1616 1617 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1618 u8 *iface_addr); 1619 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1620 u8 *dev_addr); 1621 1622 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1623 1624 /** 1625 * p2p_set_cross_connect - Set cross connection capability 1626 * @p2p: P2P module context from p2p_init() 1627 * @enabled: Whether cross connection will be enabled 1628 */ 1629 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1630 1631 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1632 1633 /** 1634 * p2p_set_intra_bss_dist - Set intra BSS distribution 1635 * @p2p: P2P module context from p2p_init() 1636 * @enabled: Whether intra BSS distribution will be enabled 1637 */ 1638 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1639 1640 int p2p_channels_includes_freq(const struct p2p_channels *channels, 1641 unsigned int freq); 1642 1643 /** 1644 * p2p_supported_freq - Check whether channel is supported for P2P 1645 * @p2p: P2P module context from p2p_init() 1646 * @freq: Channel frequency in MHz 1647 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1648 */ 1649 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1650 1651 /** 1652 * p2p_get_pref_freq - Get channel from preferred channel list 1653 * @p2p: P2P module context from p2p_init() 1654 * @channels: List of channels 1655 * Returns: Preferred channel 1656 */ 1657 unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 1658 const struct p2p_channels *channels); 1659 1660 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1661 1662 /** 1663 * p2p_set_best_channels - Update best channel information 1664 * @p2p: P2P module context from p2p_init() 1665 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1666 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1667 * @freq_overall: Frequency (MHz) of best channel overall 1668 */ 1669 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1670 int freq_overall); 1671 1672 /** 1673 * p2p_set_own_freq_preference - Set own preference for channel 1674 * @p2p: P2P module context from p2p_init() 1675 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 1676 * 1677 * This function can be used to set a preference on the operating channel based 1678 * on frequencies used on the other virtual interfaces that share the same 1679 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 1680 */ 1681 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 1682 1683 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1684 1685 /** 1686 * p2p_get_group_num_members - Get number of members in group 1687 * @group: P2P group context from p2p_group_init() 1688 * Returns: Number of members in the group 1689 */ 1690 unsigned int p2p_get_group_num_members(struct p2p_group *group); 1691 1692 /** 1693 * p2p_iterate_group_members - Iterate group members 1694 * @group: P2P group context from p2p_group_init() 1695 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1696 * on the first call and not modified later 1697 * Returns: A P2P Interface Address for each call and %NULL for no more members 1698 */ 1699 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1700 1701 /** 1702 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1703 * @group: P2P group context from p2p_group_init() 1704 * @addr: P2P Interface Address of the client 1705 * Returns: P2P Device Address of the client if found or %NULL if no match 1706 * found 1707 */ 1708 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1709 1710 /** 1711 * p2p_group_is_client_connected - Check whether a specific client is connected 1712 * @group: P2P group context from p2p_group_init() 1713 * @addr: P2P Device Address of the client 1714 * Returns: 1 if client is connected or 0 if not 1715 */ 1716 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1717 1718 /** 1719 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1720 * @p2p: P2P module context from p2p_init() 1721 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1722 * @next: Whether to select the peer entry following the one indicated by addr 1723 * Returns: The first P2P peer info available or %NULL if no such peer exists 1724 */ 1725 const struct p2p_peer_info * 1726 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1727 1728 /** 1729 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1730 * @p2p: P2P module context from p2p_init() 1731 */ 1732 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1733 1734 /** 1735 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1736 * @p2p: P2P module context from p2p_init() 1737 * @vendor_ext: The vendor extensions to add 1738 * Returns: 0 on success, -1 on failure 1739 * 1740 * The wpabuf structures in the array are owned by the P2P 1741 * module after this call. 1742 */ 1743 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1744 const struct wpabuf *vendor_ext); 1745 1746 /** 1747 * p2p_set_oper_channel - Set the P2P operating channel 1748 * @p2p: P2P module context from p2p_init() 1749 * @op_reg_class: Operating regulatory class to set 1750 * @op_channel: operating channel to set 1751 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1752 * Returns: 0 on success, -1 on failure 1753 */ 1754 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1755 int cfg_op_channel); 1756 1757 /** 1758 * p2p_set_pref_chan - Set P2P preferred channel list 1759 * @p2p: P2P module context from p2p_init() 1760 * @num_pref_chan: Number of entries in pref_chan list 1761 * @pref_chan: Preferred channels or %NULL to remove preferences 1762 * Returns: 0 on success, -1 on failure 1763 */ 1764 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1765 const struct p2p_channel *pref_chan); 1766 1767 /** 1768 * p2p_in_progress - Check whether a P2P operation is progress 1769 * @p2p: P2P module context from p2p_init() 1770 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1771 */ 1772 int p2p_in_progress(struct p2p_data *p2p); 1773 1774 #ifdef ANDROID_P2P 1775 /** 1776 * p2p_search_in_progress - Check whether a P2P SEARCH is in progress 1777 * @p2p: P2P module context from p2p_init() 1778 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1779 */ 1780 int p2p_search_in_progress(struct p2p_data *p2p); 1781 1782 /** 1783 * p2p_search_pending - Check whether there is a deferred P2P SEARCH 1784 * @p2p: P2P module context from p2p_init() 1785 * Returns: 0 if there is no deferred P2P search or 1 if there is one 1786 */ 1787 int p2p_search_pending(struct p2p_data *p2p); 1788 #endif 1789 1790 /** 1791 * p2p_other_scan_completed - Notify completion of non-P2P scan 1792 * @p2p: P2P module context from p2p_init() 1793 * Returns: 0 if P2P module is idle or 1 if an operation was started 1794 */ 1795 int p2p_other_scan_completed(struct p2p_data *p2p); 1796 1797 const char * p2p_wps_method_text(enum p2p_wps_method method); 1798 1799 /** 1800 * p2p_set_config_timeout - Set local config timeouts 1801 * @p2p: P2P module context from p2p_init() 1802 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1803 * @client_timeout: Time in 10 ms units it takes to start the client mode 1804 */ 1805 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1806 u8 client_timeout); 1807 1808 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay); 1809 1810 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1811 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1812 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1813 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1814 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1815 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1816 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1817 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1818 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1819 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1820 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1821 const struct wpabuf *elem); 1822 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1823 1824 /** 1825 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 1826 * @p2p: P2P module context from p2p_init() 1827 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 1828 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 1829 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 1830 * -1 not to limit 1831 * Returns: 0 on success, or -1 on failure 1832 * 1833 * This function can be used to configure minDiscoverableInterval and 1834 * maxDiscoverableInterval parameters for the Listen state during device 1835 * discovery (p2p_find). A random number of 100 TU units is picked for each 1836 * Listen state iteration from [min_disc_int,max_disc_int] range. 1837 * 1838 * max_disc_tu can be used to futher limit the discoverable duration. However, 1839 * it should be noted that use of this parameter is not recommended since it 1840 * would not be compliant with the P2P specification. 1841 */ 1842 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 1843 int max_disc_tu); 1844 1845 /** 1846 * p2p_get_state_txt - Get current P2P state for debug purposes 1847 * @p2p: P2P module context from p2p_init() 1848 * Returns: Name of the current P2P module state 1849 * 1850 * It should be noted that the P2P module state names are internal information 1851 * and subject to change at any point, i.e., this information should be used 1852 * mainly for debugging purposes. 1853 */ 1854 const char * p2p_get_state_txt(struct p2p_data *p2p); 1855 1856 #endif /* P2P_H */ 1857
