p2p.h revision b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15
1/* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#ifndef P2P_H 10#define P2P_H 11 12/** 13 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 14 */ 15#define P2P_MAX_REG_CLASSES 10 16 17/** 18 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 19 */ 20#define P2P_MAX_REG_CLASS_CHANNELS 20 21 22/** 23 * struct p2p_channels - List of supported channels 24 */ 25struct p2p_channels { 26 /** 27 * struct p2p_reg_class - Supported regulatory class 28 */ 29 struct p2p_reg_class { 30 /** 31 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 32 */ 33 u8 reg_class; 34 35 /** 36 * channel - Supported channels 37 */ 38 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 39 40 /** 41 * channels - Number of channel entries in use 42 */ 43 size_t channels; 44 } reg_class[P2P_MAX_REG_CLASSES]; 45 46 /** 47 * reg_classes - Number of reg_class entries in use 48 */ 49 size_t reg_classes; 50}; 51 52enum p2p_wps_method { 53 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC 54}; 55 56/** 57 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 58 */ 59struct 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 141struct p2p_data; 142 143enum 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 */ 154struct 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 231enum 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 238struct 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 */ 249struct 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 */ 780struct 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 */ 786void 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 */ 794void 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 */ 807int 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 */ 817int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 818 819int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 820int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 821int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 822int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 823 824void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 825void 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 */ 835int 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 */ 845int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 846 size_t num_dev_types); 847 848int p2p_set_country(struct p2p_data *p2p, const char *country); 849 850 851/* Commands from upper layer management entity */ 852 853enum 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 */ 872int 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 */ 881void 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 */ 891void 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 */ 904int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 905 906/** 907 * p2p_connect - Start P2P group formation (GO negotiation) 908 * @p2p: P2P module context from p2p_init() 909 * @peer_addr: MAC address of the peer P2P client 910 * @wps_method: WPS method to be used in provisioning 911 * @go_intent: Local GO intent value (1..15) 912 * @own_interface_addr: Intended interface address to use with the group 913 * @force_freq: The only allowed channel frequency in MHz or 0 914 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 915 * persistent group without persistent reconnect, 2 = persistent group with 916 * persistent reconnect) 917 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 918 * a new SSID 919 * @force_ssid_len: Length of $force_ssid buffer 920 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 921 * Negotiation as an interoperability workaround when initiating group 922 * formation 923 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 924 * force_freq == 0) 925 * Returns: 0 on success, -1 on failure 926 */ 927int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 928 enum p2p_wps_method wps_method, 929 int go_intent, const u8 *own_interface_addr, 930 unsigned int force_freq, int persistent_group, 931 const u8 *force_ssid, size_t force_ssid_len, 932 int pd_before_go_neg, unsigned int pref_freq); 933 934/** 935 * p2p_authorize - Authorize P2P group formation (GO negotiation) 936 * @p2p: P2P module context from p2p_init() 937 * @peer_addr: MAC address of the peer P2P client 938 * @wps_method: WPS method to be used in provisioning 939 * @go_intent: Local GO intent value (1..15) 940 * @own_interface_addr: Intended interface address to use with the group 941 * @force_freq: The only allowed channel frequency in MHz or 0 942 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 943 * persistent group without persistent reconnect, 2 = persistent group with 944 * persistent reconnect) 945 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 946 * a new SSID 947 * @force_ssid_len: Length of $force_ssid buffer 948 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 949 * force_freq == 0) 950 * Returns: 0 on success, -1 on failure 951 * 952 * This is like p2p_connect(), but the actual group negotiation is not 953 * initiated automatically, i.e., the other end is expected to do that. 954 */ 955int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 956 enum p2p_wps_method wps_method, 957 int go_intent, const u8 *own_interface_addr, 958 unsigned int force_freq, int persistent_group, 959 const u8 *force_ssid, size_t force_ssid_len, 960 unsigned int pref_freq); 961 962/** 963 * p2p_reject - Reject peer device (explicitly block connection attempts) 964 * @p2p: P2P module context from p2p_init() 965 * @peer_addr: MAC address of the peer P2P client 966 * Returns: 0 on success, -1 on failure 967 */ 968int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 969 970/** 971 * p2p_prov_disc_req - Send Provision Discovery Request 972 * @p2p: P2P module context from p2p_init() 973 * @peer_addr: MAC address of the peer P2P client 974 * @config_methods: WPS Config Methods value (only one bit set) 975 * @join: Whether this is used by a client joining an active group 976 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 977 * @user_initiated_pd: Flag to indicate if initiated by user or not 978 * Returns: 0 on success, -1 on failure 979 * 980 * This function can be used to request a discovered P2P peer to display a PIN 981 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 982 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 983 * is transmitted once immediately and if no response is received, the frame 984 * will be sent again whenever the target device is discovered during device 985 * dsicovery (start with a p2p_find() call). Response from the peer is 986 * indicated with the p2p_config::prov_disc_resp() callback. 987 */ 988int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 989 u16 config_methods, int join, int force_freq, 990 int user_initiated_pd); 991 992/** 993 * p2p_sd_request - Schedule a service discovery query 994 * @p2p: P2P module context from p2p_init() 995 * @dst: Destination peer or %NULL to apply for all peers 996 * @tlvs: P2P Service Query TLV(s) 997 * Returns: Reference to the query or %NULL on failure 998 * 999 * Response to the query is indicated with the p2p_config::sd_response() 1000 * callback. 1001 */ 1002void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1003 const struct wpabuf *tlvs); 1004 1005#ifdef CONFIG_WIFI_DISPLAY 1006void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1007 const struct wpabuf *tlvs); 1008#endif /* CONFIG_WIFI_DISPLAY */ 1009 1010/** 1011 * p2p_sd_cancel_request - Cancel a pending service discovery query 1012 * @p2p: P2P module context from p2p_init() 1013 * @req: Query reference from p2p_sd_request() 1014 * Returns: 0 if request for cancelled; -1 if not found 1015 */ 1016int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1017 1018/** 1019 * p2p_sd_response - Send response to a service discovery query 1020 * @p2p: P2P module context from p2p_init() 1021 * @freq: Frequency from p2p_config::sd_request() callback 1022 * @dst: Destination address from p2p_config::sd_request() callback 1023 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1024 * @resp_tlvs: P2P Service Response TLV(s) 1025 * 1026 * This function is called as a response to the request indicated with 1027 * p2p_config::sd_request() callback. 1028 */ 1029void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1030 u8 dialog_token, const struct wpabuf *resp_tlvs); 1031 1032/** 1033 * p2p_sd_service_update - Indicate a change in local services 1034 * @p2p: P2P module context from p2p_init() 1035 * 1036 * This function needs to be called whenever there is a change in availability 1037 * of the local services. This will increment the Service Update Indicator 1038 * value which will be used in SD Request and Response frames. 1039 */ 1040void p2p_sd_service_update(struct p2p_data *p2p); 1041 1042 1043enum p2p_invite_role { 1044 P2P_INVITE_ROLE_GO, 1045 P2P_INVITE_ROLE_ACTIVE_GO, 1046 P2P_INVITE_ROLE_CLIENT 1047}; 1048 1049/** 1050 * p2p_invite - Invite a P2P Device into a group 1051 * @p2p: P2P module context from p2p_init() 1052 * @peer: Device Address of the peer P2P Device 1053 * @role: Local role in the group 1054 * @bssid: Group BSSID or %NULL if not known 1055 * @ssid: Group SSID 1056 * @ssid_len: Length of ssid in octets 1057 * @force_freq: The only allowed channel frequency in MHz or 0 1058 * @go_dev_addr: Forced GO Device Address or %NULL if none 1059 * @persistent_group: Whether this is to reinvoke a persistent group 1060 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1061 * force_freq == 0) 1062 * Returns: 0 on success, -1 on failure 1063 */ 1064int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1065 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1066 unsigned int force_freq, const u8 *go_dev_addr, 1067 int persistent_group, unsigned int pref_freq); 1068 1069/** 1070 * p2p_presence_req - Request GO presence 1071 * @p2p: P2P module context from p2p_init() 1072 * @go_interface_addr: GO P2P Interface Address 1073 * @own_interface_addr: Own P2P Interface Address for this group 1074 * @freq: Group operating frequence (in MHz) 1075 * @duration1: Preferred presence duration in microseconds 1076 * @interval1: Preferred presence interval in microseconds 1077 * @duration2: Acceptable presence duration in microseconds 1078 * @interval2: Acceptable presence interval in microseconds 1079 * Returns: 0 on success, -1 on failure 1080 * 1081 * If both duration and interval values are zero, the parameter pair is not 1082 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1083 */ 1084int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1085 const u8 *own_interface_addr, unsigned int freq, 1086 u32 duration1, u32 interval1, u32 duration2, 1087 u32 interval2); 1088 1089/** 1090 * p2p_ext_listen - Set Extended Listen Timing 1091 * @p2p: P2P module context from p2p_init() 1092 * @freq: Group operating frequence (in MHz) 1093 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1094 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1095 * Returns: 0 on success, -1 on failure 1096 * 1097 * This function can be used to enable or disable (period = interval = 0) 1098 * Extended Listen Timing. When enabled, the P2P Device will become 1099 * discoverable (go into Listen State) every @interval milliseconds for at 1100 * least @period milliseconds. 1101 */ 1102int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1103 unsigned int interval); 1104 1105/* Event notifications from upper layer management operations */ 1106 1107/** 1108 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1109 * @p2p: P2P module context from p2p_init() 1110 * @mac_addr: Peer address 1111 * 1112 * This function is used to report successfully completed WPS provisioning 1113 * during group formation in both GO/Registrar and client/Enrollee roles. 1114 */ 1115void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1116 1117/** 1118 * p2p_group_formation_failed - Report failed WPS provisioning 1119 * @p2p: P2P module context from p2p_init() 1120 * 1121 * This function is used to report failed group formation. This can happen 1122 * either due to failed WPS provisioning or due to 15 second timeout during 1123 * the provisioning phase. 1124 */ 1125void p2p_group_formation_failed(struct p2p_data *p2p); 1126 1127/** 1128 * p2p_get_provisioning_info - Get any stored provisioning info 1129 * @p2p: P2P module context from p2p_init() 1130 * @addr: Peer P2P Device Address 1131 * Returns: WPS provisioning information (WPS config method) or 0 if no 1132 * information is available 1133 * 1134 * This function is used to retrieve stored WPS provisioning info for the given 1135 * peer. 1136 */ 1137u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1138 1139/** 1140 * p2p_clear_provisioning_info - Clear any stored provisioning info 1141 * @p2p: P2P module context from p2p_init() 1142 * @iface_addr: Peer P2P Device Address 1143 * 1144 * This function is used to clear stored WPS provisioning info for the given 1145 * peer. 1146 */ 1147void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1148 1149 1150/* Event notifications from lower layer driver operations */ 1151 1152/** 1153 * enum p2p_probe_req_status 1154 * 1155 * @P2P_PREQ_MALFORMED: frame was not well-formed 1156 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1157 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1158 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1159 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1160 */ 1161enum p2p_probe_req_status { 1162 P2P_PREQ_MALFORMED, 1163 P2P_PREQ_NOT_LISTEN, 1164 P2P_PREQ_NOT_P2P, 1165 P2P_PREQ_NOT_PROCESSED, 1166 P2P_PREQ_PROCESSED 1167}; 1168 1169/** 1170 * p2p_probe_req_rx - Report reception of a Probe Request frame 1171 * @p2p: P2P module context from p2p_init() 1172 * @addr: Source MAC address 1173 * @dst: Destination MAC address if available or %NULL 1174 * @bssid: BSSID if available or %NULL 1175 * @ie: Information elements from the Probe Request frame body 1176 * @ie_len: Length of ie buffer in octets 1177 * Returns: value indicating the type and status of the probe request 1178 */ 1179enum p2p_probe_req_status 1180p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1181 const u8 *bssid, const u8 *ie, size_t ie_len); 1182 1183/** 1184 * p2p_rx_action - Report received Action frame 1185 * @p2p: P2P module context from p2p_init() 1186 * @da: Destination address of the received Action frame 1187 * @sa: Source address of the received Action frame 1188 * @bssid: Address 3 of the received Action frame 1189 * @category: Category of the received Action frame 1190 * @data: Action frame body after the Category field 1191 * @len: Length of the data buffer in octets 1192 * @freq: Frequency (in MHz) on which the frame was received 1193 */ 1194void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1195 const u8 *bssid, u8 category, 1196 const u8 *data, size_t len, int freq); 1197 1198/** 1199 * p2p_scan_res_handler - Indicate a P2P scan results 1200 * @p2p: P2P module context from p2p_init() 1201 * @bssid: BSSID of the scan result 1202 * @freq: Frequency of the channel on which the device was found in MHz 1203 * @rx_time: Time when the result was received 1204 * @level: Signal level (signal strength of the received Beacon/Probe Response 1205 * frame) 1206 * @ies: Pointer to IEs from the scan result 1207 * @ies_len: Length of the ies buffer 1208 * Returns: 0 to continue or 1 to stop scan result indication 1209 * 1210 * This function is called to indicate a scan result entry with P2P IE from a 1211 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1212 * the actual scan process (i.e., whenever a new device is found) or as a 1213 * sequence of calls after the full scan has been completed. The former option 1214 * can result in optimized operations, but may not be supported by all 1215 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1216 * but it is recommended to include all IEs received from the device. The 1217 * caller does not need to check that the IEs contain a P2P IE before calling 1218 * this function since frames will be filtered internally if needed. 1219 * 1220 * This function will return 1 if it wants to stop scan result iteration (and 1221 * scan in general if it is still in progress). This is used to allow faster 1222 * start of a pending operation, e.g., to start a pending GO negotiation. 1223 */ 1224int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1225 struct os_time *rx_time, int level, const u8 *ies, 1226 size_t ies_len); 1227 1228/** 1229 * p2p_scan_res_handled - Indicate end of scan results 1230 * @p2p: P2P module context from p2p_init() 1231 * 1232 * This function is called to indicate that all P2P scan results from a scan 1233 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1234 * function must be called as a response to successful 1235 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1236 * calls stopped iteration. 1237 */ 1238void p2p_scan_res_handled(struct p2p_data *p2p); 1239 1240enum p2p_send_action_result { 1241 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1242 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1243 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1244}; 1245 1246/** 1247 * p2p_send_action_cb - Notify TX status of an Action frame 1248 * @p2p: P2P module context from p2p_init() 1249 * @freq: Channel frequency in MHz 1250 * @dst: Destination MAC address (Address 1) 1251 * @src: Source MAC address (Address 2) 1252 * @bssid: BSSID (Address 3) 1253 * @result: Result of the transmission attempt 1254 * 1255 * This function is used to indicate the result of an Action frame transmission 1256 * that was requested with struct p2p_config::send_action() callback. 1257 */ 1258void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1259 const u8 *src, const u8 *bssid, 1260 enum p2p_send_action_result result); 1261 1262/** 1263 * p2p_listen_cb - Indicate the start of a requested Listen state 1264 * @p2p: P2P module context from p2p_init() 1265 * @freq: Listen channel frequency in MHz 1266 * @duration: Duration for the Listen state in milliseconds 1267 * 1268 * This function is used to indicate that a Listen state requested with 1269 * struct p2p_config::start_listen() callback has started. 1270 */ 1271void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1272 unsigned int duration); 1273 1274/** 1275 * p2p_listen_end - Indicate the end of a requested Listen state 1276 * @p2p: P2P module context from p2p_init() 1277 * @freq: Listen channel frequency in MHz 1278 * Returns: 0 if no operations were started, 1 if an operation was started 1279 * 1280 * This function is used to indicate that a Listen state requested with 1281 * struct p2p_config::start_listen() callback has ended. 1282 */ 1283int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1284 1285void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1286 const u8 *ie, size_t ie_len); 1287 1288void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1289 const u8 *ie, size_t ie_len); 1290 1291 1292/* Per-group P2P state for GO */ 1293 1294struct p2p_group; 1295 1296/** 1297 * struct p2p_group_config - P2P group configuration 1298 * 1299 * This configuration is provided to the P2P module during initialization of 1300 * the per-group information with p2p_group_init(). 1301 */ 1302struct p2p_group_config { 1303 /** 1304 * persistent_group - Whether the group is persistent 1305 * 0 = not a persistent group 1306 * 1 = persistent group without persistent reconnect 1307 * 2 = persistent group with persistent reconnect 1308 */ 1309 int persistent_group; 1310 1311 /** 1312 * interface_addr - P2P Interface Address of the group 1313 */ 1314 u8 interface_addr[ETH_ALEN]; 1315 1316 /** 1317 * max_clients - Maximum number of clients in the group 1318 */ 1319 unsigned int max_clients; 1320 1321 /** 1322 * ssid - Group SSID 1323 */ 1324 u8 ssid[32]; 1325 1326 /** 1327 * ssid_len - Length of SSID 1328 */ 1329 size_t ssid_len; 1330 1331 /** 1332 * cb_ctx - Context to use with callback functions 1333 */ 1334 void *cb_ctx; 1335 1336 /** 1337 * ie_update - Notification of IE update 1338 * @ctx: Callback context from cb_ctx 1339 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1340 * @proberesp_ies: P2P Ie for Probe Response frames 1341 * 1342 * P2P module uses this callback function to notify whenever the P2P IE 1343 * in Beacon or Probe Response frames should be updated based on group 1344 * events. 1345 * 1346 * The callee is responsible for freeing the returned buffer(s) with 1347 * wpabuf_free(). 1348 */ 1349 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1350 struct wpabuf *proberesp_ies); 1351 1352 /** 1353 * idle_update - Notification of changes in group idle state 1354 * @ctx: Callback context from cb_ctx 1355 * @idle: Whether the group is idle (no associated stations) 1356 */ 1357 void (*idle_update)(void *ctx, int idle); 1358}; 1359 1360/** 1361 * p2p_group_init - Initialize P2P group 1362 * @p2p: P2P module context from p2p_init() 1363 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1364 * Returns: Pointer to private data or %NULL on failure 1365 * 1366 * This function is used to initialize per-group P2P module context. Currently, 1367 * this is only used to manage GO functionality and P2P clients do not need to 1368 * create an instance of this per-group information. 1369 */ 1370struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1371 struct p2p_group_config *config); 1372 1373/** 1374 * p2p_group_deinit - Deinitialize P2P group 1375 * @group: P2P group context from p2p_group_init() 1376 */ 1377void p2p_group_deinit(struct p2p_group *group); 1378 1379/** 1380 * p2p_group_notif_assoc - Notification of P2P client association with GO 1381 * @group: P2P group context from p2p_group_init() 1382 * @addr: Interface address of the P2P client 1383 * @ie: IEs from the (Re)association Request frame 1384 * @len: Length of the ie buffer in octets 1385 * Returns: 0 on success, -1 on failure 1386 */ 1387int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1388 const u8 *ie, size_t len); 1389 1390/** 1391 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1392 * @group: P2P group context from p2p_group_init() 1393 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1394 * Returns: P2P IE for (Re)association Response or %NULL on failure 1395 * 1396 * The caller is responsible for freeing the returned buffer with 1397 * wpabuf_free(). 1398 */ 1399struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1400 1401/** 1402 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1403 * @group: P2P group context from p2p_group_init() 1404 * @addr: Interface address of the P2P client 1405 */ 1406void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1407 1408/** 1409 * p2p_group_notif_formation_done - Notification of completed group formation 1410 * @group: P2P group context from p2p_group_init() 1411 */ 1412void p2p_group_notif_formation_done(struct p2p_group *group); 1413 1414/** 1415 * p2p_group_notif_noa - Notification of NoA change 1416 * @group: P2P group context from p2p_group_init() 1417 * @noa: Notice of Absence attribute payload, %NULL if none 1418 * @noa_len: Length of noa buffer in octets 1419 * Returns: 0 on success, -1 on failure 1420 * 1421 * Notify the P2P group management about a new NoA contents. This will be 1422 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1423 * the group information. 1424 */ 1425int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1426 size_t noa_len); 1427 1428/** 1429 * p2p_group_match_dev_type - Match device types in group with requested type 1430 * @group: P2P group context from p2p_group_init() 1431 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1432 * Returns: 1 on match, 0 on mismatch 1433 * 1434 * This function can be used to match the Requested Device Type attribute in 1435 * WPS IE with the device types of a group member for deciding whether a GO 1436 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1437 * is not requested any specific device type. 1438 */ 1439int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1440 1441/** 1442 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1443 */ 1444int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1445 1446/** 1447 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1448 * @group: P2P group context from p2p_group_init() 1449 * Returns: 0 on success (frame scheduled); -1 if client was not found 1450 */ 1451int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1452 const u8 *searching_dev, int rx_freq); 1453 1454 1455/* Generic helper functions */ 1456 1457/** 1458 * p2p_ie_text - Build text format description of P2P IE 1459 * @p2p_ie: P2P IE 1460 * @buf: Buffer for returning text 1461 * @end: Pointer to the end of the buf area 1462 * Returns: Number of octets written to the buffer or -1 on failure 1463 * 1464 * This function can be used to parse P2P IE contents into text format 1465 * field=value lines. 1466 */ 1467int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1468 1469/** 1470 * p2p_scan_result_text - Build text format description of P2P IE 1471 * @ies: Information elements from scan results 1472 * @ies_len: ies buffer length in octets 1473 * @buf: Buffer for returning text 1474 * @end: Pointer to the end of the buf area 1475 * Returns: Number of octets written to the buffer or -1 on failure 1476 * 1477 * This function can be used to parse P2P IE contents into text format 1478 * field=value lines. 1479 */ 1480int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1481 1482/** 1483 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1484 * P2P IE 1485 * @p2p_ie: P2P IE 1486 * @dev_addr: Buffer for returning P2P Device Address 1487 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1488 */ 1489int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1490 1491/** 1492 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1493 * @ies: Information elements from scan results 1494 * @ies_len: ies buffer length in octets 1495 * @dev_addr: Buffer for returning P2P Device Address 1496 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1497 */ 1498int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1499 1500/** 1501 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1502 * @p2p: P2P module context from p2p_init() 1503 * @bssid: BSSID 1504 * @buf: Buffer for writing the P2P IE 1505 * @len: Maximum buf length in octets 1506 * @p2p_group: Whether this is for association with a P2P GO 1507 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1508 * Returns: Number of octets written into buf or -1 on failure 1509 */ 1510int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1511 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1512 1513/** 1514 * p2p_scan_ie - Build P2P IE for Probe Request 1515 * @p2p: P2P module context from p2p_init() 1516 * @ies: Buffer for writing P2P IE 1517 * @dev_id: Device ID to search for or %NULL for any 1518 */ 1519void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1520 1521/** 1522 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1523 * @p2p: P2P module context from p2p_init() 1524 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1525 */ 1526size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1527 1528/** 1529 * p2p_go_params - Generate random P2P group parameters 1530 * @p2p: P2P module context from p2p_init() 1531 * @params: Buffer for parameters 1532 * Returns: 0 on success, -1 on failure 1533 */ 1534int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1535 1536/** 1537 * p2p_get_group_capab - Get Group Capability from P2P IE data 1538 * @p2p_ie: P2P IE(s) contents 1539 * Returns: Group Capability 1540 */ 1541u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1542 1543/** 1544 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1545 * @p2p_ie: P2P IE(s) contents 1546 * Returns: 0 if cross connection is allow, 1 if not 1547 */ 1548int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1549 1550/** 1551 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1552 * @p2p_ie: P2P IE(s) contents 1553 * Returns: Pointer to P2P Device Address or %NULL if not included 1554 */ 1555const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1556 1557/** 1558 * p2p_get_peer_info - Get P2P peer information 1559 * @p2p: P2P module context from p2p_init() 1560 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1561 * @next: Whether to select the peer entry following the one indicated by addr 1562 * Returns: Pointer to peer info or %NULL if not found 1563 */ 1564const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1565 const u8 *addr, int next); 1566 1567/** 1568 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1569 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1570 * @buf: Buffer for returning text 1571 * @buflen: Maximum buffer length 1572 * Returns: Number of octets written to the buffer or -1 on failure 1573 * 1574 * Note: This information is internal to the P2P module and subject to change. 1575 * As such, this should not really be used by external programs for purposes 1576 * other than debugging. 1577 */ 1578int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1579 char *buf, size_t buflen); 1580 1581/** 1582 * p2p_peer_known - Check whether P2P peer is known 1583 * @p2p: P2P module context from p2p_init() 1584 * @addr: P2P Device Address of the peer 1585 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1586 */ 1587int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1588 1589/** 1590 * p2p_set_client_discoverability - Set client discoverability capability 1591 * @p2p: P2P module context from p2p_init() 1592 * @enabled: Whether client discoverability will be enabled 1593 * 1594 * This function can be used to disable (and re-enable) client discoverability. 1595 * This capability is enabled by default and should not be disabled in normal 1596 * use cases, i.e., this is mainly for testing purposes. 1597 */ 1598void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1599 1600/** 1601 * p2p_set_managed_oper - Set managed P2P Device operations capability 1602 * @p2p: P2P module context from p2p_init() 1603 * @enabled: Whether managed P2P Device operations will be enabled 1604 */ 1605void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1606 1607int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1608 1609int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1610 1611int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1612 u8 *iface_addr); 1613int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1614 u8 *dev_addr); 1615 1616void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1617 1618/** 1619 * p2p_set_cross_connect - Set cross connection capability 1620 * @p2p: P2P module context from p2p_init() 1621 * @enabled: Whether cross connection will be enabled 1622 */ 1623void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1624 1625int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1626 1627/** 1628 * p2p_set_intra_bss_dist - Set intra BSS distribution 1629 * @p2p: P2P module context from p2p_init() 1630 * @enabled: Whether intra BSS distribution will be enabled 1631 */ 1632void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1633 1634int p2p_channels_includes_freq(const struct p2p_channels *channels, 1635 unsigned int freq); 1636 1637/** 1638 * p2p_supported_freq - Check whether channel is supported for P2P 1639 * @p2p: P2P module context from p2p_init() 1640 * @freq: Channel frequency in MHz 1641 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1642 */ 1643int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1644 1645/** 1646 * p2p_get_pref_freq - Get channel from preferred channel list 1647 * @p2p: P2P module context from p2p_init() 1648 * @channels: List of channels 1649 * Returns: Preferred channel 1650 */ 1651unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 1652 const struct p2p_channels *channels); 1653 1654void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1655 1656/** 1657 * p2p_set_best_channels - Update best channel information 1658 * @p2p: P2P module context from p2p_init() 1659 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1660 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1661 * @freq_overall: Frequency (MHz) of best channel overall 1662 */ 1663void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1664 int freq_overall); 1665 1666/** 1667 * p2p_set_own_freq_preference - Set own preference for channel 1668 * @p2p: P2P module context from p2p_init() 1669 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 1670 * 1671 * This function can be used to set a preference on the operating channel based 1672 * on frequencies used on the other virtual interfaces that share the same 1673 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 1674 */ 1675void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 1676 1677const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1678 1679/** 1680 * p2p_get_group_num_members - Get number of members in group 1681 * @group: P2P group context from p2p_group_init() 1682 * Returns: Number of members in the group 1683 */ 1684unsigned int p2p_get_group_num_members(struct p2p_group *group); 1685 1686/** 1687 * p2p_iterate_group_members - Iterate group members 1688 * @group: P2P group context from p2p_group_init() 1689 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1690 * on the first call and not modified later 1691 * Returns: A P2P Interface Address for each call and %NULL for no more members 1692 */ 1693const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1694 1695/** 1696 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1697 * @group: P2P group context from p2p_group_init() 1698 * @addr: P2P Interface Address of the client 1699 * Returns: P2P Device Address of the client if found or %NULL if no match 1700 * found 1701 */ 1702const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1703 1704/** 1705 * p2p_group_is_client_connected - Check whether a specific client is connected 1706 * @group: P2P group context from p2p_group_init() 1707 * @addr: P2P Device Address of the client 1708 * Returns: 1 if client is connected or 0 if not 1709 */ 1710int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1711 1712/** 1713 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1714 * @p2p: P2P module context from p2p_init() 1715 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1716 * @next: Whether to select the peer entry following the one indicated by addr 1717 * Returns: The first P2P peer info available or %NULL if no such peer exists 1718 */ 1719const struct p2p_peer_info * 1720p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1721 1722/** 1723 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1724 * @p2p: P2P module context from p2p_init() 1725 */ 1726void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1727 1728/** 1729 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1730 * @p2p: P2P module context from p2p_init() 1731 * @vendor_ext: The vendor extensions to add 1732 * Returns: 0 on success, -1 on failure 1733 * 1734 * The wpabuf structures in the array are owned by the P2P 1735 * module after this call. 1736 */ 1737int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1738 const struct wpabuf *vendor_ext); 1739 1740/** 1741 * p2p_set_oper_channel - Set the P2P operating channel 1742 * @p2p: P2P module context from p2p_init() 1743 * @op_reg_class: Operating regulatory class to set 1744 * @op_channel: operating channel to set 1745 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1746 * Returns: 0 on success, -1 on failure 1747 */ 1748int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1749 int cfg_op_channel); 1750 1751/** 1752 * p2p_set_pref_chan - Set P2P preferred channel list 1753 * @p2p: P2P module context from p2p_init() 1754 * @num_pref_chan: Number of entries in pref_chan list 1755 * @pref_chan: Preferred channels or %NULL to remove preferences 1756 * Returns: 0 on success, -1 on failure 1757 */ 1758int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1759 const struct p2p_channel *pref_chan); 1760 1761/** 1762 * p2p_in_progress - Check whether a P2P operation is progress 1763 * @p2p: P2P module context from p2p_init() 1764 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1765 */ 1766int p2p_in_progress(struct p2p_data *p2p); 1767 1768#ifdef ANDROID_P2P 1769/** 1770 * p2p_search_in_progress - Check whether a P2P SEARCH is in progress 1771 * @p2p: P2P module context from p2p_init() 1772 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1773 */ 1774int p2p_search_in_progress(struct p2p_data *p2p); 1775 1776/** 1777 * p2p_search_pending - Check whether there is a deferred P2P SEARCH 1778 * @p2p: P2P module context from p2p_init() 1779 * Returns: 0 if there is no deferred P2P search or 1 if there is one 1780 */ 1781int p2p_search_pending(struct p2p_data *p2p); 1782#endif 1783 1784/** 1785 * p2p_other_scan_completed - Notify completion of non-P2P scan 1786 * @p2p: P2P module context from p2p_init() 1787 * Returns: 0 if P2P module is idle or 1 if an operation was started 1788 */ 1789int p2p_other_scan_completed(struct p2p_data *p2p); 1790 1791const char * p2p_wps_method_text(enum p2p_wps_method method); 1792 1793/** 1794 * p2p_set_config_timeout - Set local config timeouts 1795 * @p2p: P2P module context from p2p_init() 1796 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1797 * @client_timeout: Time in 10 ms units it takes to start the client mode 1798 */ 1799void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1800 u8 client_timeout); 1801 1802void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay); 1803 1804int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1805int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1806int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1807int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1808int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1809int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1810int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1811int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1812int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1813int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1814int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1815 const struct wpabuf *elem); 1816struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1817 1818/** 1819 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 1820 * @p2p: P2P module context from p2p_init() 1821 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 1822 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 1823 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 1824 * -1 not to limit 1825 * Returns: 0 on success, or -1 on failure 1826 * 1827 * This function can be used to configure minDiscoverableInterval and 1828 * maxDiscoverableInterval parameters for the Listen state during device 1829 * discovery (p2p_find). A random number of 100 TU units is picked for each 1830 * Listen state iteration from [min_disc_int,max_disc_int] range. 1831 * 1832 * max_disc_tu can be used to futher limit the discoverable duration. However, 1833 * it should be noted that use of this parameter is not recommended since it 1834 * would not be compliant with the P2P specification. 1835 */ 1836int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 1837 int max_disc_tu); 1838 1839/** 1840 * p2p_get_state_txt - Get current P2P state for debug purposes 1841 * @p2p: P2P module context from p2p_init() 1842 * Returns: Name of the current P2P module state 1843 * 1844 * It should be noted that the P2P module state names are internal information 1845 * and subject to change at any point, i.e., this information should be used 1846 * mainly for debugging purposes. 1847 */ 1848const char * p2p_get_state_txt(struct p2p_data *p2p); 1849 1850#endif /* P2P_H */ 1851