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 enum 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 */ 63 struct 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 }; 144 145 struct p2p_data; 146 147 enum 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 */ 159 struct 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 }; 235 236 enum 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 }; 242 243 struct 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 */ 254 struct 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 * msg_ctx - Context to use with wpa_msg() calls 388 */ 389 void *msg_ctx; 390 391 /** 392 * cb_ctx - Context to use with callback functions 393 */ 394 void *cb_ctx; 395 396 397 /* Callbacks to request lower layer driver operations */ 398 399 /** 400 * p2p_scan - Request a P2P scan/search 401 * @ctx: Callback context from cb_ctx 402 * @type: Scan type 403 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 404 * @num_req_dev_types: Number of requested device types 405 * @req_dev_types: Array containing requested device types 406 * @dev_id: Device ID to search for or %NULL to find all devices 407 * @pw_id: Device Password ID 408 * Returns: 0 on success, -1 on failure 409 * 410 * This callback function is used to request a P2P scan or search 411 * operation to be completed. Type type argument specifies which type 412 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 413 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 414 * indicates that all channels are to be scanned. 415 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 416 * plus one extra channel specified by freq. 417 * 418 * The full scan is used for the initial scan to find group owners from 419 * all. The other types are used during search phase scan of the social 420 * channels (with potential variation if the Listen channel of the 421 * target peer is known or if other channels are scanned in steps). 422 * 423 * The scan results are returned after this call by calling 424 * p2p_scan_res_handler() for each scan result that has a P2P IE and 425 * then calling p2p_scan_res_handled() to indicate that all scan 426 * results have been indicated. 427 */ 428 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 429 unsigned int num_req_dev_types, 430 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 431 432 /** 433 * send_probe_resp - Transmit a Probe Response frame 434 * @ctx: Callback context from cb_ctx 435 * @buf: Probe Response frame (including the header and body) 436 * Returns: 0 on success, -1 on failure 437 * 438 * This function is used to reply to Probe Request frames that were 439 * indicated with a call to p2p_probe_req_rx(). The response is to be 440 * sent on the same channel or to be dropped if the driver is not 441 * anymore listening to Probe Request frames. 442 * 443 * Alternatively, the responsibility for building the Probe Response 444 * frames in Listen state may be in another system component in which 445 * case this function need to be implemented (i.e., the function 446 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 447 * Response frames in such a case are available from the 448 * start_listen() callback. It should be noted that the received Probe 449 * Request frames must be indicated by calling p2p_probe_req_rx() even 450 * if this send_probe_resp() is not used. 451 */ 452 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 453 454 /** 455 * send_action - Transmit an Action frame 456 * @ctx: Callback context from cb_ctx 457 * @freq: Frequency in MHz for the channel on which to transmit 458 * @dst: Destination MAC address (Address 1) 459 * @src: Source MAC address (Address 2) 460 * @bssid: BSSID (Address 3) 461 * @buf: Frame body (starting from Category field) 462 * @len: Length of buf in octets 463 * @wait_time: How many msec to wait for a response frame 464 * Returns: 0 on success, -1 on failure 465 * 466 * The Action frame may not be transmitted immediately and the status 467 * of the transmission must be reported by calling 468 * p2p_send_action_cb() once the frame has either been transmitted or 469 * it has been dropped due to excessive retries or other failure to 470 * transmit. 471 */ 472 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 473 const u8 *src, const u8 *bssid, const u8 *buf, 474 size_t len, unsigned int wait_time); 475 476 /** 477 * send_action_done - Notify that Action frame sequence was completed 478 * @ctx: Callback context from cb_ctx 479 * 480 * This function is called when the Action frame sequence that was 481 * started with send_action() has been completed, i.e., when there is 482 * no need to wait for a response from the destination peer anymore. 483 */ 484 void (*send_action_done)(void *ctx); 485 486 /** 487 * start_listen - Start Listen state 488 * @ctx: Callback context from cb_ctx 489 * @freq: Frequency of the listen channel in MHz 490 * @duration: Duration for the Listen state in milliseconds 491 * @probe_resp_ie: IE(s) to be added to Probe Response frames 492 * Returns: 0 on success, -1 on failure 493 * 494 * This Listen state may not start immediately since the driver may 495 * have other pending operations to complete first. Once the Listen 496 * state has started, p2p_listen_cb() must be called to notify the P2P 497 * module. Once the Listen state is stopped, p2p_listen_end() must be 498 * called to notify the P2P module that the driver is not in the Listen 499 * state anymore. 500 * 501 * If the send_probe_resp() is not used for generating the response, 502 * the IEs from probe_resp_ie need to be added to the end of the Probe 503 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 504 * information can be ignored. 505 */ 506 int (*start_listen)(void *ctx, unsigned int freq, 507 unsigned int duration, 508 const struct wpabuf *probe_resp_ie); 509 /** 510 * stop_listen - Stop Listen state 511 * @ctx: Callback context from cb_ctx 512 * 513 * This callback can be used to stop a Listen state operation that was 514 * previously requested with start_listen(). 515 */ 516 void (*stop_listen)(void *ctx); 517 518 /** 519 * get_noa - Get current Notice of Absence attribute payload 520 * @ctx: Callback context from cb_ctx 521 * @interface_addr: P2P Interface Address of the GO 522 * @buf: Buffer for returning NoA 523 * @buf_len: Buffer length in octets 524 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 525 * advertized, or -1 on failure 526 * 527 * This function is used to fetch the current Notice of Absence 528 * attribute value from GO. 529 */ 530 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 531 size_t buf_len); 532 533 /* Callbacks to notify events to upper layer management entity */ 534 535 /** 536 * dev_found - Notification of a found P2P Device 537 * @ctx: Callback context from cb_ctx 538 * @addr: Source address of the message triggering this notification 539 * @info: P2P peer information 540 * @new_device: Inform if the peer is newly found 541 * 542 * This callback is used to notify that a new P2P Device has been 543 * found. This may happen, e.g., during Search state based on scan 544 * results or during Listen state based on receive Probe Request and 545 * Group Owner Negotiation Request. 546 */ 547 void (*dev_found)(void *ctx, const u8 *addr, 548 const struct p2p_peer_info *info, 549 int new_device); 550 551 /** 552 * dev_lost - Notification of a lost P2P Device 553 * @ctx: Callback context from cb_ctx 554 * @dev_addr: P2P Device Address of the lost P2P Device 555 * 556 * This callback is used to notify that a P2P Device has been deleted. 557 */ 558 void (*dev_lost)(void *ctx, const u8 *dev_addr); 559 560 /** 561 * go_neg_req_rx - Notification of a receive GO Negotiation Request 562 * @ctx: Callback context from cb_ctx 563 * @src: Source address of the message triggering this notification 564 * @dev_passwd_id: WPS Device Password ID 565 * 566 * This callback is used to notify that a P2P Device is requesting 567 * group owner negotiation with us, but we do not have all the 568 * necessary information to start GO Negotiation. This indicates that 569 * the local user has not authorized the connection yet by providing a 570 * PIN or PBC button press. This information can be provided with a 571 * call to p2p_connect(). 572 */ 573 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 574 575 /** 576 * go_neg_completed - Notification of GO Negotiation results 577 * @ctx: Callback context from cb_ctx 578 * @res: GO Negotiation results 579 * 580 * This callback is used to notify that Group Owner Negotiation has 581 * been completed. Non-zero struct p2p_go_neg_results::status indicates 582 * failed negotiation. In case of success, this function is responsible 583 * for creating a new group interface (or using the existing interface 584 * depending on driver features), setting up the group interface in 585 * proper mode based on struct p2p_go_neg_results::role_go and 586 * initializing WPS provisioning either as a Registrar (if GO) or as an 587 * Enrollee. Successful WPS provisioning must be indicated by calling 588 * p2p_wps_success_cb(). The callee is responsible for timing out group 589 * formation if WPS provisioning cannot be completed successfully 590 * within 15 seconds. 591 */ 592 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 593 594 /** 595 * sd_request - Callback on Service Discovery Request 596 * @ctx: Callback context from cb_ctx 597 * @freq: Frequency (in MHz) of the channel 598 * @sa: Source address of the request 599 * @dialog_token: Dialog token 600 * @update_indic: Service Update Indicator from the source of request 601 * @tlvs: P2P Service Request TLV(s) 602 * @tlvs_len: Length of tlvs buffer in octets 603 * 604 * This callback is used to indicate reception of a service discovery 605 * request. Response to the query must be indicated by calling 606 * p2p_sd_response() with the context information from the arguments to 607 * this callback function. 608 * 609 * This callback handler can be set to %NULL to indicate that service 610 * discovery is not supported. 611 */ 612 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 613 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 614 615 /** 616 * sd_response - Callback on Service Discovery Response 617 * @ctx: Callback context from cb_ctx 618 * @sa: Source address of the request 619 * @update_indic: Service Update Indicator from the source of response 620 * @tlvs: P2P Service Response TLV(s) 621 * @tlvs_len: Length of tlvs buffer in octets 622 * 623 * This callback is used to indicate reception of a service discovery 624 * response. This callback handler can be set to %NULL if no service 625 * discovery requests are used. The information provided with this call 626 * is replies to the queries scheduled with p2p_sd_request(). 627 */ 628 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 629 const u8 *tlvs, size_t tlvs_len); 630 631 /** 632 * prov_disc_req - Callback on Provisiong Discovery Request 633 * @ctx: Callback context from cb_ctx 634 * @peer: Source address of the request 635 * @config_methods: Requested WPS Config Method 636 * @dev_addr: P2P Device Address of the found P2P Device 637 * @pri_dev_type: Primary Device Type 638 * @dev_name: Device Name 639 * @supp_config_methods: Supported configuration Methods 640 * @dev_capab: Device Capabilities 641 * @group_capab: Group Capabilities 642 * @group_id: P2P Group ID (or %NULL if not included) 643 * @group_id_len: Length of P2P Group ID 644 * 645 * This callback is used to indicate reception of a Provision Discovery 646 * Request frame that the P2P module accepted. 647 */ 648 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 649 const u8 *dev_addr, const u8 *pri_dev_type, 650 const char *dev_name, u16 supp_config_methods, 651 u8 dev_capab, u8 group_capab, 652 const u8 *group_id, size_t group_id_len); 653 654 /** 655 * prov_disc_resp - Callback on Provisiong Discovery Response 656 * @ctx: Callback context from cb_ctx 657 * @peer: Source address of the response 658 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 659 * 660 * This callback is used to indicate reception of a Provision Discovery 661 * Response frame for a pending request scheduled with 662 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 663 * provision discovery is not used. 664 */ 665 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 666 667 /** 668 * prov_disc_fail - Callback on Provision Discovery failure 669 * @ctx: Callback context from cb_ctx 670 * @peer: Source address of the response 671 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 672 * 673 * This callback is used to indicate either a failure or no response 674 * to an earlier provision discovery request. 675 * 676 * This callback handler can be set to %NULL if provision discovery 677 * is not used or failures do not need to be indicated. 678 */ 679 void (*prov_disc_fail)(void *ctx, const u8 *peer, 680 enum p2p_prov_disc_status status); 681 682 /** 683 * invitation_process - Optional callback for processing Invitations 684 * @ctx: Callback context from cb_ctx 685 * @sa: Source address of the Invitation Request 686 * @bssid: P2P Group BSSID from the request or %NULL if not included 687 * @go_dev_addr: GO Device Address from P2P Group ID 688 * @ssid: SSID from P2P Group ID 689 * @ssid_len: Length of ssid buffer in octets 690 * @go: Variable for returning whether the local end is GO in the group 691 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 692 * @force_freq: Variable for returning forced frequency for the group 693 * @persistent_group: Whether this is an invitation to reinvoke a 694 * persistent group (instead of invitation to join an active 695 * group) 696 * Returns: Status code (P2P_SC_*) 697 * 698 * This optional callback can be used to implement persistent reconnect 699 * by allowing automatic restarting of persistent groups without user 700 * interaction. If this callback is not implemented (i.e., is %NULL), 701 * the received Invitation Request frames are replied with 702 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 703 * invitation_result() callback. 704 * 705 * If the requested parameters are acceptable and the group is known, 706 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 707 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 708 * can be returned if there is not enough data to provide immediate 709 * response, i.e., if some sort of user interaction is needed. The 710 * invitation_received() callback will be called in that case 711 * immediately after this call. 712 */ 713 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 714 const u8 *go_dev_addr, const u8 *ssid, 715 size_t ssid_len, int *go, u8 *group_bssid, 716 int *force_freq, int persistent_group); 717 718 /** 719 * invitation_received - Callback on Invitation Request RX 720 * @ctx: Callback context from cb_ctx 721 * @sa: Source address of the Invitation Request 722 * @bssid: P2P Group BSSID or %NULL if not received 723 * @ssid: SSID of the group 724 * @ssid_len: Length of ssid in octets 725 * @go_dev_addr: GO Device Address 726 * @status: Response Status 727 * @op_freq: Operational frequency for the group 728 * 729 * This callback is used to indicate sending of an Invitation Response 730 * for a received Invitation Request. If status == 0 (success), the 731 * upper layer code is responsible for starting the group. status == 1 732 * indicates need to get user authorization for the group. Other status 733 * values indicate that the invitation request was rejected. 734 */ 735 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 736 const u8 *ssid, size_t ssid_len, 737 const u8 *go_dev_addr, u8 status, 738 int op_freq); 739 740 /** 741 * invitation_result - Callback on Invitation result 742 * @ctx: Callback context from cb_ctx 743 * @status: Negotiation result (Status Code) 744 * @bssid: P2P Group BSSID or %NULL if not received 745 * @channels: Available operating channels for the group 746 * @addr: Peer address 747 * 748 * This callback is used to indicate result of an Invitation procedure 749 * started with a call to p2p_invite(). The indicated status code is 750 * the value received from the peer in Invitation Response with 0 751 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 752 * local failure in transmitting the Invitation Request. 753 */ 754 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 755 const struct p2p_channels *channels, 756 const u8 *addr); 757 758 /** 759 * go_connected - Check whether we are connected to a GO 760 * @ctx: Callback context from cb_ctx 761 * @dev_addr: P2P Device Address of a GO 762 * Returns: 1 if we are connected as a P2P client to the specified GO 763 * or 0 if not. 764 */ 765 int (*go_connected)(void *ctx, const u8 *dev_addr); 766 }; 767 768 769 /* P2P module initialization/deinitialization */ 770 771 /** 772 * p2p_init - Initialize P2P module 773 * @cfg: P2P module configuration 774 * Returns: Pointer to private data or %NULL on failure 775 * 776 * This function is used to initialize global P2P module context (one per 777 * device). The P2P module will keep a copy of the configuration data, so the 778 * caller does not need to maintain this structure. However, the callback 779 * functions and the context parameters to them must be kept available until 780 * the P2P module is deinitialized with p2p_deinit(). 781 */ 782 struct p2p_data * p2p_init(const struct p2p_config *cfg); 783 784 /** 785 * p2p_deinit - Deinitialize P2P module 786 * @p2p: P2P module context from p2p_init() 787 */ 788 void p2p_deinit(struct p2p_data *p2p); 789 790 /** 791 * p2p_flush - Flush P2P module state 792 * @p2p: P2P module context from p2p_init() 793 * 794 * This command removes the P2P module state like peer device entries. 795 */ 796 void p2p_flush(struct p2p_data *p2p); 797 798 /** 799 * p2p_unauthorize - Unauthorize the specified peer device 800 * @p2p: P2P module context from p2p_init() 801 * @addr: P2P peer entry to be unauthorized 802 * Returns: 0 on success, -1 on failure 803 * 804 * This command removes any connection authorization from the specified P2P 805 * peer device address. This can be used, e.g., to cancel effect of a previous 806 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 807 * GO Negotiation. 808 */ 809 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 810 811 /** 812 * p2p_set_dev_name - Set device name 813 * @p2p: P2P module context from p2p_init() 814 * Returns: 0 on success, -1 on failure 815 * 816 * This function can be used to update the P2P module configuration with 817 * information that was not available at the time of the p2p_init() call. 818 */ 819 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 820 821 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 822 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 823 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 824 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 825 826 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 827 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 828 829 /** 830 * p2p_set_pri_dev_type - Set primary device type 831 * @p2p: P2P module context from p2p_init() 832 * Returns: 0 on success, -1 on failure 833 * 834 * This function can be used to update the P2P module configuration with 835 * information that was not available at the time of the p2p_init() call. 836 */ 837 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 838 839 /** 840 * p2p_set_sec_dev_types - Set secondary device types 841 * @p2p: P2P module context from p2p_init() 842 * Returns: 0 on success, -1 on failure 843 * 844 * This function can be used to update the P2P module configuration with 845 * information that was not available at the time of the p2p_init() call. 846 */ 847 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 848 size_t num_dev_types); 849 850 int p2p_set_country(struct p2p_data *p2p, const char *country); 851 852 853 /* Commands from upper layer management entity */ 854 855 enum p2p_discovery_type { 856 P2P_FIND_START_WITH_FULL, 857 P2P_FIND_ONLY_SOCIAL, 858 P2P_FIND_PROGRESSIVE 859 }; 860 861 /** 862 * p2p_find - Start P2P Find (Device Discovery) 863 * @p2p: P2P module context from p2p_init() 864 * @timeout: Timeout for find operation in seconds or 0 for no timeout 865 * @type: Device Discovery type 866 * @num_req_dev_types: Number of requested device types 867 * @req_dev_types: Requested device types array, must be an array 868 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 869 * requested device types. 870 * @dev_id: Device ID to search for or %NULL to find all devices 871 * @search_delay: Extra delay in milliseconds between search iterations 872 * Returns: 0 on success, -1 on failure 873 */ 874 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 875 enum p2p_discovery_type type, 876 unsigned int num_req_dev_types, const u8 *req_dev_types, 877 const u8 *dev_id, unsigned int search_delay); 878 879 /** 880 * p2p_stop_find - Stop P2P Find (Device Discovery) 881 * @p2p: P2P module context from p2p_init() 882 */ 883 void p2p_stop_find(struct p2p_data *p2p); 884 885 /** 886 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 887 * @p2p: P2P module context from p2p_init() 888 * @freq: Frequency in MHz for next operation 889 * 890 * This is like p2p_stop_find(), but Listen state is not stopped if we are 891 * already on the same frequency. 892 */ 893 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 894 895 /** 896 * p2p_listen - Start P2P Listen state for specified duration 897 * @p2p: P2P module context from p2p_init() 898 * @timeout: Listen state duration in milliseconds 899 * Returns: 0 on success, -1 on failure 900 * 901 * This function can be used to request the P2P module to keep the device 902 * discoverable on the listen channel for an extended set of time. At least in 903 * its current form, this is mainly used for testing purposes and may not be of 904 * much use for normal P2P operations. 905 */ 906 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 907 908 /** 909 * p2p_connect - Start P2P group formation (GO negotiation) 910 * @p2p: P2P module context from p2p_init() 911 * @peer_addr: MAC address of the peer P2P client 912 * @wps_method: WPS method to be used in provisioning 913 * @go_intent: Local GO intent value (1..15) 914 * @own_interface_addr: Intended interface address to use with the group 915 * @force_freq: The only allowed channel frequency in MHz or 0 916 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 917 * persistent group without persistent reconnect, 2 = persistent group with 918 * persistent reconnect) 919 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 920 * a new SSID 921 * @force_ssid_len: Length of $force_ssid buffer 922 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 923 * Negotiation as an interoperability workaround when initiating group 924 * formation 925 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 926 * force_freq == 0) 927 * Returns: 0 on success, -1 on failure 928 */ 929 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 930 enum p2p_wps_method wps_method, 931 int go_intent, const u8 *own_interface_addr, 932 unsigned int force_freq, int persistent_group, 933 const u8 *force_ssid, size_t force_ssid_len, 934 int pd_before_go_neg, unsigned int pref_freq); 935 936 /** 937 * p2p_authorize - Authorize P2P group formation (GO negotiation) 938 * @p2p: P2P module context from p2p_init() 939 * @peer_addr: MAC address of the peer P2P client 940 * @wps_method: WPS method to be used in provisioning 941 * @go_intent: Local GO intent value (1..15) 942 * @own_interface_addr: Intended interface address to use with the group 943 * @force_freq: The only allowed channel frequency in MHz or 0 944 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 945 * persistent group without persistent reconnect, 2 = persistent group with 946 * persistent reconnect) 947 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 948 * a new SSID 949 * @force_ssid_len: Length of $force_ssid buffer 950 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 951 * force_freq == 0) 952 * Returns: 0 on success, -1 on failure 953 * 954 * This is like p2p_connect(), but the actual group negotiation is not 955 * initiated automatically, i.e., the other end is expected to do that. 956 */ 957 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 958 enum p2p_wps_method wps_method, 959 int go_intent, const u8 *own_interface_addr, 960 unsigned int force_freq, int persistent_group, 961 const u8 *force_ssid, size_t force_ssid_len, 962 unsigned int pref_freq); 963 964 /** 965 * p2p_reject - Reject peer device (explicitly block connection attempts) 966 * @p2p: P2P module context from p2p_init() 967 * @peer_addr: MAC address of the peer P2P client 968 * Returns: 0 on success, -1 on failure 969 */ 970 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 971 972 /** 973 * p2p_prov_disc_req - Send Provision Discovery Request 974 * @p2p: P2P module context from p2p_init() 975 * @peer_addr: MAC address of the peer P2P client 976 * @config_methods: WPS Config Methods value (only one bit set) 977 * @join: Whether this is used by a client joining an active group 978 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 979 * @user_initiated_pd: Flag to indicate if initiated by user or not 980 * Returns: 0 on success, -1 on failure 981 * 982 * This function can be used to request a discovered P2P peer to display a PIN 983 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 984 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 985 * is transmitted once immediately and if no response is received, the frame 986 * will be sent again whenever the target device is discovered during device 987 * dsicovery (start with a p2p_find() call). Response from the peer is 988 * indicated with the p2p_config::prov_disc_resp() callback. 989 */ 990 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 991 u16 config_methods, int join, int force_freq, 992 int user_initiated_pd); 993 994 /** 995 * p2p_sd_request - Schedule a service discovery query 996 * @p2p: P2P module context from p2p_init() 997 * @dst: Destination peer or %NULL to apply for all peers 998 * @tlvs: P2P Service Query TLV(s) 999 * Returns: Reference to the query or %NULL on failure 1000 * 1001 * Response to the query is indicated with the p2p_config::sd_response() 1002 * callback. 1003 */ 1004 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1005 const struct wpabuf *tlvs); 1006 1007 #ifdef CONFIG_WIFI_DISPLAY 1008 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1009 const struct wpabuf *tlvs); 1010 #endif /* CONFIG_WIFI_DISPLAY */ 1011 1012 /** 1013 * p2p_sd_cancel_request - Cancel a pending service discovery query 1014 * @p2p: P2P module context from p2p_init() 1015 * @req: Query reference from p2p_sd_request() 1016 * Returns: 0 if request for cancelled; -1 if not found 1017 */ 1018 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1019 1020 /** 1021 * p2p_sd_response - Send response to a service discovery query 1022 * @p2p: P2P module context from p2p_init() 1023 * @freq: Frequency from p2p_config::sd_request() callback 1024 * @dst: Destination address from p2p_config::sd_request() callback 1025 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1026 * @resp_tlvs: P2P Service Response TLV(s) 1027 * 1028 * This function is called as a response to the request indicated with 1029 * p2p_config::sd_request() callback. 1030 */ 1031 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1032 u8 dialog_token, const struct wpabuf *resp_tlvs); 1033 1034 /** 1035 * p2p_sd_service_update - Indicate a change in local services 1036 * @p2p: P2P module context from p2p_init() 1037 * 1038 * This function needs to be called whenever there is a change in availability 1039 * of the local services. This will increment the Service Update Indicator 1040 * value which will be used in SD Request and Response frames. 1041 */ 1042 #ifdef ANDROID_P2P 1043 void p2p_sd_service_update(struct p2p_data *p2p, int action); 1044 #else 1045 void p2p_sd_service_update(struct p2p_data *p2p); 1046 #endif 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 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1652 1653 /** 1654 * p2p_set_best_channels - Update best channel information 1655 * @p2p: P2P module context from p2p_init() 1656 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1657 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1658 * @freq_overall: Frequency (MHz) of best channel overall 1659 */ 1660 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1661 int freq_overall); 1662 1663 /** 1664 * p2p_set_own_freq_preference - Set own preference for channel 1665 * @p2p: P2P module context from p2p_init() 1666 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 1667 * 1668 * This function can be used to set a preference on the operating channel based 1669 * on frequencies used on the other virtual interfaces that share the same 1670 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 1671 */ 1672 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 1673 1674 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1675 1676 /** 1677 * p2p_get_group_num_members - Get number of members in group 1678 * @group: P2P group context from p2p_group_init() 1679 * Returns: Number of members in the group 1680 */ 1681 unsigned int p2p_get_group_num_members(struct p2p_group *group); 1682 1683 /** 1684 * p2p_iterate_group_members - Iterate group members 1685 * @group: P2P group context from p2p_group_init() 1686 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1687 * on the first call and not modified later 1688 * Returns: A P2P Interface Address for each call and %NULL for no more members 1689 */ 1690 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1691 1692 /** 1693 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1694 * @group: P2P group context from p2p_group_init() 1695 * @addr: P2P Interface Address of the client 1696 * Returns: P2P Device Address of the client if found or %NULL if no match 1697 * found 1698 */ 1699 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1700 1701 /** 1702 * p2p_group_is_client_connected - Check whether a specific client is connected 1703 * @group: P2P group context from p2p_group_init() 1704 * @addr: P2P Device Address of the client 1705 * Returns: 1 if client is connected or 0 if not 1706 */ 1707 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1708 1709 /** 1710 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1711 * @p2p: P2P module context from p2p_init() 1712 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1713 * @next: Whether to select the peer entry following the one indicated by addr 1714 * Returns: The first P2P peer info available or %NULL if no such peer exists 1715 */ 1716 const struct p2p_peer_info * 1717 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1718 1719 /** 1720 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1721 * @p2p: P2P module context from p2p_init() 1722 */ 1723 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1724 1725 /** 1726 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1727 * @p2p: P2P module context from p2p_init() 1728 * @vendor_ext: The vendor extensions to add 1729 * Returns: 0 on success, -1 on failure 1730 * 1731 * The wpabuf structures in the array are owned by the P2P 1732 * module after this call. 1733 */ 1734 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1735 const struct wpabuf *vendor_ext); 1736 1737 /** 1738 * p2p_set_oper_channel - Set the P2P operating channel 1739 * @p2p: P2P module context from p2p_init() 1740 * @op_reg_class: Operating regulatory class to set 1741 * @op_channel: operating channel to set 1742 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1743 * Returns: 0 on success, -1 on failure 1744 */ 1745 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1746 int cfg_op_channel); 1747 1748 /** 1749 * p2p_set_pref_chan - Set P2P preferred channel list 1750 * @p2p: P2P module context from p2p_init() 1751 * @num_pref_chan: Number of entries in pref_chan list 1752 * @pref_chan: Preferred channels or %NULL to remove preferences 1753 * Returns: 0 on success, -1 on failure 1754 */ 1755 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1756 const struct p2p_channel *pref_chan); 1757 1758 /** 1759 * p2p_in_progress - Check whether a P2P operation is progress 1760 * @p2p: P2P module context from p2p_init() 1761 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1762 */ 1763 int p2p_in_progress(struct p2p_data *p2p); 1764 1765 #ifdef ANDROID_P2P 1766 /** 1767 * p2p_search_in_progress - Check whether a P2P SEARCH is in progress 1768 * @p2p: P2P module context from p2p_init() 1769 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1770 */ 1771 int p2p_search_in_progress(struct p2p_data *p2p); 1772 1773 /** 1774 * p2p_search_pending - Check whether there is a deferred P2P SEARCH 1775 * @p2p: P2P module context from p2p_init() 1776 * Returns: 0 if there is no deferred P2P search or 1 if there is one 1777 */ 1778 int p2p_search_pending(struct p2p_data *p2p); 1779 #endif 1780 1781 /** 1782 * p2p_other_scan_completed - Notify completion of non-P2P scan 1783 * @p2p: P2P module context from p2p_init() 1784 * Returns: 0 if P2P module is idle or 1 if an operation was started 1785 */ 1786 int p2p_other_scan_completed(struct p2p_data *p2p); 1787 1788 const char * p2p_wps_method_text(enum p2p_wps_method method); 1789 1790 /** 1791 * p2p_set_config_timeout - Set local config timeouts 1792 * @p2p: P2P module context from p2p_init() 1793 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1794 * @client_timeout: Time in 10 ms units it takes to start the client mode 1795 */ 1796 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1797 u8 client_timeout); 1798 1799 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay); 1800 1801 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1802 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1803 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1804 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1805 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1806 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1807 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1808 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1809 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1810 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1811 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1812 const struct wpabuf *elem); 1813 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1814 1815 /** 1816 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 1817 * @p2p: P2P module context from p2p_init() 1818 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 1819 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 1820 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 1821 * -1 not to limit 1822 * Returns: 0 on success, or -1 on failure 1823 * 1824 * This function can be used to configure minDiscoverableInterval and 1825 * maxDiscoverableInterval parameters for the Listen state during device 1826 * discovery (p2p_find). A random number of 100 TU units is picked for each 1827 * Listen state iteration from [min_disc_int,max_disc_int] range. 1828 * 1829 * max_disc_tu can be used to futher limit the discoverable duration. However, 1830 * it should be noted that use of this parameter is not recommended since it 1831 * would not be compliant with the P2P specification. 1832 */ 1833 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 1834 int max_disc_tu); 1835 1836 #endif /* P2P_H */ 1837