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 #include "wps/wps_defs.h" 13 14 /** 15 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 16 */ 17 #define P2P_MAX_REG_CLASSES 10 18 19 /** 20 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 21 */ 22 #define P2P_MAX_REG_CLASS_CHANNELS 20 23 24 /** 25 * struct p2p_channels - List of supported channels 26 */ 27 struct p2p_channels { 28 /** 29 * struct p2p_reg_class - Supported regulatory class 30 */ 31 struct p2p_reg_class { 32 /** 33 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 34 */ 35 u8 reg_class; 36 37 /** 38 * channel - Supported channels 39 */ 40 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 41 42 /** 43 * channels - Number of channel entries in use 44 */ 45 size_t channels; 46 } reg_class[P2P_MAX_REG_CLASSES]; 47 48 /** 49 * reg_classes - Number of reg_class entries in use 50 */ 51 size_t reg_classes; 52 }; 53 54 enum p2p_wps_method { 55 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC, WPS_NFC 56 }; 57 58 /** 59 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 60 */ 61 struct p2p_go_neg_results { 62 /** 63 * status - Negotiation result (Status Code) 64 * 65 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 66 * failed negotiation. 67 */ 68 int status; 69 70 /** 71 * role_go - Whether local end is Group Owner 72 */ 73 int role_go; 74 75 /** 76 * freq - Frequency of the group operational channel in MHz 77 */ 78 int freq; 79 80 int ht40; 81 82 int vht; 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_SOCIAL_PLUS_ONE 151 }; 152 153 #define P2P_MAX_WPS_VENDOR_EXT 10 154 155 /** 156 * struct p2p_peer_info - P2P peer information 157 */ 158 struct p2p_peer_info { 159 /** 160 * p2p_device_addr - P2P Device Address of the peer 161 */ 162 u8 p2p_device_addr[ETH_ALEN]; 163 164 /** 165 * pri_dev_type - Primary Device Type 166 */ 167 u8 pri_dev_type[8]; 168 169 /** 170 * device_name - Device Name (0..32 octets encoded in UTF-8) 171 */ 172 char device_name[33]; 173 174 /** 175 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 176 */ 177 char manufacturer[65]; 178 179 /** 180 * model_name - Model Name (0..32 octets encoded in UTF-8) 181 */ 182 char model_name[33]; 183 184 /** 185 * model_number - Model Number (0..32 octets encoded in UTF-8) 186 */ 187 char model_number[33]; 188 189 /** 190 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 191 */ 192 char serial_number[33]; 193 194 /** 195 * level - Signal level 196 */ 197 int level; 198 199 /** 200 * config_methods - WPS Configuration Methods 201 */ 202 u16 config_methods; 203 204 /** 205 * dev_capab - Device Capabilities 206 */ 207 u8 dev_capab; 208 209 /** 210 * group_capab - Group Capabilities 211 */ 212 u8 group_capab; 213 214 /** 215 * wps_sec_dev_type_list - WPS secondary device type list 216 * 217 * This list includes from 0 to 16 Secondary Device Types as indicated 218 * by wps_sec_dev_type_list_len (8 * number of types). 219 */ 220 u8 wps_sec_dev_type_list[128]; 221 222 /** 223 * wps_sec_dev_type_list_len - Length of secondary device type list 224 */ 225 size_t wps_sec_dev_type_list_len; 226 227 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 228 229 /** 230 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s) 231 */ 232 struct wpabuf *wfd_subelems; 233 234 /** 235 * vendor_elems - Unrecognized vendor elements 236 * 237 * This buffer includes any other vendor element than P2P, WPS, and WFD 238 * IE(s) from the frame that was used to discover the peer. 239 */ 240 struct wpabuf *vendor_elems; 241 }; 242 243 enum p2p_prov_disc_status { 244 P2P_PROV_DISC_SUCCESS, 245 P2P_PROV_DISC_TIMEOUT, 246 P2P_PROV_DISC_REJECTED, 247 P2P_PROV_DISC_TIMEOUT_JOIN, 248 }; 249 250 struct p2p_channel { 251 u8 op_class; 252 u8 chan; 253 }; 254 255 /** 256 * struct p2p_config - P2P configuration 257 * 258 * This configuration is provided to the P2P module during initialization with 259 * p2p_init(). 260 */ 261 struct p2p_config { 262 /** 263 * country - Country code to use in P2P operations 264 */ 265 char country[3]; 266 267 /** 268 * reg_class - Regulatory class for own listen channel 269 */ 270 u8 reg_class; 271 272 /** 273 * channel - Own listen channel 274 */ 275 u8 channel; 276 277 /** 278 * channel_forced - the listen channel was forced by configuration 279 * or by control interface and cannot be overridden 280 */ 281 u8 channel_forced; 282 283 /** 284 * Regulatory class for own operational channel 285 */ 286 u8 op_reg_class; 287 288 /** 289 * op_channel - Own operational channel 290 */ 291 u8 op_channel; 292 293 /** 294 * cfg_op_channel - Whether op_channel is hardcoded in configuration 295 */ 296 u8 cfg_op_channel; 297 298 /** 299 * channels - Own supported regulatory classes and channels 300 * 301 * List of supposerted channels per regulatory class. The regulatory 302 * classes are defined in IEEE Std 802.11-2007 Annex J and the 303 * numbering of the clases depends on the configured country code. 304 */ 305 struct p2p_channels channels; 306 307 /** 308 * cli_channels - Additional client channels 309 * 310 * This list of channels (if any) will be used when advertising local 311 * channels during GO Negotiation or Invitation for the cases where the 312 * local end may become the client. This may allow the peer to become a 313 * GO on additional channels if it supports these options. The main use 314 * case for this is to include passive-scan channels on devices that may 315 * not know their current location and have configured most channels to 316 * not allow initiation of radition (i.e., another device needs to take 317 * master responsibilities). 318 */ 319 struct p2p_channels cli_channels; 320 321 /** 322 * num_pref_chan - Number of pref_chan entries 323 */ 324 unsigned int num_pref_chan; 325 326 /** 327 * pref_chan - Preferred channels for GO Negotiation 328 */ 329 struct p2p_channel *pref_chan; 330 331 /** 332 * pri_dev_type - Primary Device Type (see WPS) 333 */ 334 u8 pri_dev_type[8]; 335 336 /** 337 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 338 */ 339 #define P2P_SEC_DEVICE_TYPES 5 340 341 /** 342 * sec_dev_type - Optional secondary device types 343 */ 344 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 345 346 /** 347 * num_sec_dev_types - Number of sec_dev_type entries 348 */ 349 size_t num_sec_dev_types; 350 351 /** 352 * dev_addr - P2P Device Address 353 */ 354 u8 dev_addr[ETH_ALEN]; 355 356 /** 357 * dev_name - Device Name 358 */ 359 char *dev_name; 360 361 char *manufacturer; 362 char *model_name; 363 char *model_number; 364 char *serial_number; 365 366 u8 uuid[16]; 367 u16 config_methods; 368 369 /** 370 * concurrent_operations - Whether concurrent operations are supported 371 */ 372 int concurrent_operations; 373 374 /** 375 * max_peers - Maximum number of discovered peers to remember 376 * 377 * If more peers are discovered, older entries will be removed to make 378 * room for the new ones. 379 */ 380 size_t max_peers; 381 382 /** 383 * p2p_intra_bss - Intra BSS communication is supported 384 */ 385 int p2p_intra_bss; 386 387 /** 388 * ssid_postfix - Postfix data to add to the SSID 389 * 390 * This data will be added to the end of the SSID after the 391 * DIRECT-<random two octets> prefix. 392 */ 393 u8 ssid_postfix[32 - 9]; 394 395 /** 396 * ssid_postfix_len - Length of the ssid_postfix data 397 */ 398 size_t ssid_postfix_len; 399 400 /** 401 * max_listen - Maximum listen duration in ms 402 */ 403 unsigned int max_listen; 404 405 /** 406 * passphrase_len - Passphrase length (8..63) 407 * 408 * This parameter controls the length of the random passphrase that is 409 * generated at the GO. 410 */ 411 unsigned int passphrase_len; 412 413 /** 414 * cb_ctx - Context to use with callback functions 415 */ 416 void *cb_ctx; 417 418 /** 419 * debug_print - Debug print 420 * @ctx: Callback context from cb_ctx 421 * @level: Debug verbosity level (MSG_*) 422 * @msg: Debug message 423 */ 424 void (*debug_print)(void *ctx, int level, const char *msg); 425 426 427 /* Callbacks to request lower layer driver operations */ 428 429 /** 430 * p2p_scan - Request a P2P scan/search 431 * @ctx: Callback context from cb_ctx 432 * @type: Scan type 433 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 434 * @num_req_dev_types: Number of requested device types 435 * @req_dev_types: Array containing requested device types 436 * @dev_id: Device ID to search for or %NULL to find all devices 437 * @pw_id: Device Password ID 438 * Returns: 0 on success, -1 on failure 439 * 440 * This callback function is used to request a P2P scan or search 441 * operation to be completed. Type type argument specifies which type 442 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 443 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 444 * indicates that all channels are to be scanned. 445 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 446 * plus one extra channel specified by freq. 447 * 448 * The full scan is used for the initial scan to find group owners from 449 * all. The other types are used during search phase scan of the social 450 * channels (with potential variation if the Listen channel of the 451 * target peer is known or if other channels are scanned in steps). 452 * 453 * The scan results are returned after this call by calling 454 * p2p_scan_res_handler() for each scan result that has a P2P IE and 455 * then calling p2p_scan_res_handled() to indicate that all scan 456 * results have been indicated. 457 */ 458 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 459 unsigned int num_req_dev_types, 460 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 461 462 /** 463 * send_probe_resp - Transmit a Probe Response frame 464 * @ctx: Callback context from cb_ctx 465 * @buf: Probe Response frame (including the header and body) 466 * Returns: 0 on success, -1 on failure 467 * 468 * This function is used to reply to Probe Request frames that were 469 * indicated with a call to p2p_probe_req_rx(). The response is to be 470 * sent on the same channel or to be dropped if the driver is not 471 * anymore listening to Probe Request frames. 472 * 473 * Alternatively, the responsibility for building the Probe Response 474 * frames in Listen state may be in another system component in which 475 * case this function need to be implemented (i.e., the function 476 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 477 * Response frames in such a case are available from the 478 * start_listen() callback. It should be noted that the received Probe 479 * Request frames must be indicated by calling p2p_probe_req_rx() even 480 * if this send_probe_resp() is not used. 481 */ 482 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 483 484 /** 485 * send_action - Transmit an Action frame 486 * @ctx: Callback context from cb_ctx 487 * @freq: Frequency in MHz for the channel on which to transmit 488 * @dst: Destination MAC address (Address 1) 489 * @src: Source MAC address (Address 2) 490 * @bssid: BSSID (Address 3) 491 * @buf: Frame body (starting from Category field) 492 * @len: Length of buf in octets 493 * @wait_time: How many msec to wait for a response frame 494 * Returns: 0 on success, -1 on failure 495 * 496 * The Action frame may not be transmitted immediately and the status 497 * of the transmission must be reported by calling 498 * p2p_send_action_cb() once the frame has either been transmitted or 499 * it has been dropped due to excessive retries or other failure to 500 * transmit. 501 */ 502 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 503 const u8 *src, const u8 *bssid, const u8 *buf, 504 size_t len, unsigned int wait_time); 505 506 /** 507 * send_action_done - Notify that Action frame sequence was completed 508 * @ctx: Callback context from cb_ctx 509 * 510 * This function is called when the Action frame sequence that was 511 * started with send_action() has been completed, i.e., when there is 512 * no need to wait for a response from the destination peer anymore. 513 */ 514 void (*send_action_done)(void *ctx); 515 516 /** 517 * start_listen - Start Listen state 518 * @ctx: Callback context from cb_ctx 519 * @freq: Frequency of the listen channel in MHz 520 * @duration: Duration for the Listen state in milliseconds 521 * @probe_resp_ie: IE(s) to be added to Probe Response frames 522 * Returns: 0 on success, -1 on failure 523 * 524 * This Listen state may not start immediately since the driver may 525 * have other pending operations to complete first. Once the Listen 526 * state has started, p2p_listen_cb() must be called to notify the P2P 527 * module. Once the Listen state is stopped, p2p_listen_end() must be 528 * called to notify the P2P module that the driver is not in the Listen 529 * state anymore. 530 * 531 * If the send_probe_resp() is not used for generating the response, 532 * the IEs from probe_resp_ie need to be added to the end of the Probe 533 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 534 * information can be ignored. 535 */ 536 int (*start_listen)(void *ctx, unsigned int freq, 537 unsigned int duration, 538 const struct wpabuf *probe_resp_ie); 539 /** 540 * stop_listen - Stop Listen state 541 * @ctx: Callback context from cb_ctx 542 * 543 * This callback can be used to stop a Listen state operation that was 544 * previously requested with start_listen(). 545 */ 546 void (*stop_listen)(void *ctx); 547 548 /** 549 * get_noa - Get current Notice of Absence attribute payload 550 * @ctx: Callback context from cb_ctx 551 * @interface_addr: P2P Interface Address of the GO 552 * @buf: Buffer for returning NoA 553 * @buf_len: Buffer length in octets 554 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 555 * advertized, or -1 on failure 556 * 557 * This function is used to fetch the current Notice of Absence 558 * attribute value from GO. 559 */ 560 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 561 size_t buf_len); 562 563 /* Callbacks to notify events to upper layer management entity */ 564 565 /** 566 * dev_found - Notification of a found P2P Device 567 * @ctx: Callback context from cb_ctx 568 * @addr: Source address of the message triggering this notification 569 * @info: P2P peer information 570 * @new_device: Inform if the peer is newly found 571 * 572 * This callback is used to notify that a new P2P Device has been 573 * found. This may happen, e.g., during Search state based on scan 574 * results or during Listen state based on receive Probe Request and 575 * Group Owner Negotiation Request. 576 */ 577 void (*dev_found)(void *ctx, const u8 *addr, 578 const struct p2p_peer_info *info, 579 int new_device); 580 581 /** 582 * dev_lost - Notification of a lost P2P Device 583 * @ctx: Callback context from cb_ctx 584 * @dev_addr: P2P Device Address of the lost P2P Device 585 * 586 * This callback is used to notify that a P2P Device has been deleted. 587 */ 588 void (*dev_lost)(void *ctx, const u8 *dev_addr); 589 590 /** 591 * find_stopped - Notification of a p2p_find operation stopping 592 * @ctx: Callback context from cb_ctx 593 */ 594 void (*find_stopped)(void *ctx); 595 596 /** 597 * go_neg_req_rx - Notification of a receive GO Negotiation Request 598 * @ctx: Callback context from cb_ctx 599 * @src: Source address of the message triggering this notification 600 * @dev_passwd_id: WPS Device Password ID 601 * 602 * This callback is used to notify that a P2P Device is requesting 603 * group owner negotiation with us, but we do not have all the 604 * necessary information to start GO Negotiation. This indicates that 605 * the local user has not authorized the connection yet by providing a 606 * PIN or PBC button press. This information can be provided with a 607 * call to p2p_connect(). 608 */ 609 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 610 611 /** 612 * go_neg_completed - Notification of GO Negotiation results 613 * @ctx: Callback context from cb_ctx 614 * @res: GO Negotiation results 615 * 616 * This callback is used to notify that Group Owner Negotiation has 617 * been completed. Non-zero struct p2p_go_neg_results::status indicates 618 * failed negotiation. In case of success, this function is responsible 619 * for creating a new group interface (or using the existing interface 620 * depending on driver features), setting up the group interface in 621 * proper mode based on struct p2p_go_neg_results::role_go and 622 * initializing WPS provisioning either as a Registrar (if GO) or as an 623 * Enrollee. Successful WPS provisioning must be indicated by calling 624 * p2p_wps_success_cb(). The callee is responsible for timing out group 625 * formation if WPS provisioning cannot be completed successfully 626 * within 15 seconds. 627 */ 628 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 629 630 /** 631 * sd_request - Callback on Service Discovery Request 632 * @ctx: Callback context from cb_ctx 633 * @freq: Frequency (in MHz) of the channel 634 * @sa: Source address of the request 635 * @dialog_token: Dialog token 636 * @update_indic: Service Update Indicator from the source of request 637 * @tlvs: P2P Service Request TLV(s) 638 * @tlvs_len: Length of tlvs buffer in octets 639 * 640 * This callback is used to indicate reception of a service discovery 641 * request. Response to the query must be indicated by calling 642 * p2p_sd_response() with the context information from the arguments to 643 * this callback function. 644 * 645 * This callback handler can be set to %NULL to indicate that service 646 * discovery is not supported. 647 */ 648 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 649 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 650 651 /** 652 * sd_response - Callback on Service Discovery Response 653 * @ctx: Callback context from cb_ctx 654 * @sa: Source address of the request 655 * @update_indic: Service Update Indicator from the source of response 656 * @tlvs: P2P Service Response TLV(s) 657 * @tlvs_len: Length of tlvs buffer in octets 658 * 659 * This callback is used to indicate reception of a service discovery 660 * response. This callback handler can be set to %NULL if no service 661 * discovery requests are used. The information provided with this call 662 * is replies to the queries scheduled with p2p_sd_request(). 663 */ 664 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 665 const u8 *tlvs, size_t tlvs_len); 666 667 /** 668 * prov_disc_req - Callback on Provisiong Discovery Request 669 * @ctx: Callback context from cb_ctx 670 * @peer: Source address of the request 671 * @config_methods: Requested WPS Config Method 672 * @dev_addr: P2P Device Address of the found P2P Device 673 * @pri_dev_type: Primary Device Type 674 * @dev_name: Device Name 675 * @supp_config_methods: Supported configuration Methods 676 * @dev_capab: Device Capabilities 677 * @group_capab: Group Capabilities 678 * @group_id: P2P Group ID (or %NULL if not included) 679 * @group_id_len: Length of P2P Group ID 680 * 681 * This callback is used to indicate reception of a Provision Discovery 682 * Request frame that the P2P module accepted. 683 */ 684 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 685 const u8 *dev_addr, const u8 *pri_dev_type, 686 const char *dev_name, u16 supp_config_methods, 687 u8 dev_capab, u8 group_capab, 688 const u8 *group_id, size_t group_id_len); 689 690 /** 691 * prov_disc_resp - Callback on Provisiong Discovery Response 692 * @ctx: Callback context from cb_ctx 693 * @peer: Source address of the response 694 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 695 * 696 * This callback is used to indicate reception of a Provision Discovery 697 * Response frame for a pending request scheduled with 698 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 699 * provision discovery is not used. 700 */ 701 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 702 703 /** 704 * prov_disc_fail - Callback on Provision Discovery failure 705 * @ctx: Callback context from cb_ctx 706 * @peer: Source address of the response 707 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 708 * 709 * This callback is used to indicate either a failure or no response 710 * to an earlier provision discovery request. 711 * 712 * This callback handler can be set to %NULL if provision discovery 713 * is not used or failures do not need to be indicated. 714 */ 715 void (*prov_disc_fail)(void *ctx, const u8 *peer, 716 enum p2p_prov_disc_status status); 717 718 /** 719 * invitation_process - Optional callback for processing Invitations 720 * @ctx: Callback context from cb_ctx 721 * @sa: Source address of the Invitation Request 722 * @bssid: P2P Group BSSID from the request or %NULL if not included 723 * @go_dev_addr: GO Device Address from P2P Group ID 724 * @ssid: SSID from P2P Group ID 725 * @ssid_len: Length of ssid buffer in octets 726 * @go: Variable for returning whether the local end is GO in the group 727 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 728 * @force_freq: Variable for returning forced frequency for the group 729 * @persistent_group: Whether this is an invitation to reinvoke a 730 * persistent group (instead of invitation to join an active 731 * group) 732 * @channels: Available operating channels for the group 733 * @dev_pw_id: Device Password ID for NFC static handover or -1 if not 734 * used 735 * Returns: Status code (P2P_SC_*) 736 * 737 * This optional callback can be used to implement persistent reconnect 738 * by allowing automatic restarting of persistent groups without user 739 * interaction. If this callback is not implemented (i.e., is %NULL), 740 * the received Invitation Request frames are replied with 741 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 742 * invitation_result() callback. 743 * 744 * If the requested parameters are acceptable and the group is known, 745 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 746 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 747 * can be returned if there is not enough data to provide immediate 748 * response, i.e., if some sort of user interaction is needed. The 749 * invitation_received() callback will be called in that case 750 * immediately after this call. 751 */ 752 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 753 const u8 *go_dev_addr, const u8 *ssid, 754 size_t ssid_len, int *go, u8 *group_bssid, 755 int *force_freq, int persistent_group, 756 const struct p2p_channels *channels, 757 int dev_pw_id); 758 759 /** 760 * invitation_received - Callback on Invitation Request RX 761 * @ctx: Callback context from cb_ctx 762 * @sa: Source address of the Invitation Request 763 * @bssid: P2P Group BSSID or %NULL if not received 764 * @ssid: SSID of the group 765 * @ssid_len: Length of ssid in octets 766 * @go_dev_addr: GO Device Address 767 * @status: Response Status 768 * @op_freq: Operational frequency for the group 769 * 770 * This callback is used to indicate sending of an Invitation Response 771 * for a received Invitation Request. If status == 0 (success), the 772 * upper layer code is responsible for starting the group. status == 1 773 * indicates need to get user authorization for the group. Other status 774 * values indicate that the invitation request was rejected. 775 */ 776 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 777 const u8 *ssid, size_t ssid_len, 778 const u8 *go_dev_addr, u8 status, 779 int op_freq); 780 781 /** 782 * invitation_result - Callback on Invitation result 783 * @ctx: Callback context from cb_ctx 784 * @status: Negotiation result (Status Code) 785 * @bssid: P2P Group BSSID or %NULL if not received 786 * @channels: Available operating channels for the group 787 * @addr: Peer address 788 * @freq: Frequency (in MHz) indicated during invitation or 0 789 * @peer_oper_freq: Operating frequency (in MHz) advertized by the peer 790 * during invitation or 0 791 * 792 * This callback is used to indicate result of an Invitation procedure 793 * started with a call to p2p_invite(). The indicated status code is 794 * the value received from the peer in Invitation Response with 0 795 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 796 * local failure in transmitting the Invitation Request. 797 */ 798 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 799 const struct p2p_channels *channels, 800 const u8 *addr, int freq, int peer_oper_freq); 801 802 /** 803 * go_connected - Check whether we are connected to a GO 804 * @ctx: Callback context from cb_ctx 805 * @dev_addr: P2P Device Address of a GO 806 * Returns: 1 if we are connected as a P2P client to the specified GO 807 * or 0 if not. 808 */ 809 int (*go_connected)(void *ctx, const u8 *dev_addr); 810 811 /** 812 * presence_resp - Callback on Presence Response 813 * @ctx: Callback context from cb_ctx 814 * @src: Source address (GO's P2P Interface Address) 815 * @status: Result of the request (P2P_SC_*) 816 * @noa: Returned NoA value 817 * @noa_len: Length of the NoA buffer in octets 818 */ 819 void (*presence_resp)(void *ctx, const u8 *src, u8 status, 820 const u8 *noa, size_t noa_len); 821 822 /** 823 * is_concurrent_session_active - Check whether concurrent session is 824 * active on other virtual interfaces 825 * @ctx: Callback context from cb_ctx 826 * Returns: 1 if concurrent session is active on other virtual interface 827 * or 0 if not. 828 */ 829 int (*is_concurrent_session_active)(void *ctx); 830 831 /** 832 * is_p2p_in_progress - Check whether P2P operation is in progress 833 * @ctx: Callback context from cb_ctx 834 * Returns: 1 if P2P operation (e.g., group formation) is in progress 835 * or 0 if not. 836 */ 837 int (*is_p2p_in_progress)(void *ctx); 838 }; 839 840 841 /* P2P module initialization/deinitialization */ 842 843 /** 844 * p2p_init - Initialize P2P module 845 * @cfg: P2P module configuration 846 * Returns: Pointer to private data or %NULL on failure 847 * 848 * This function is used to initialize global P2P module context (one per 849 * device). The P2P module will keep a copy of the configuration data, so the 850 * caller does not need to maintain this structure. However, the callback 851 * functions and the context parameters to them must be kept available until 852 * the P2P module is deinitialized with p2p_deinit(). 853 */ 854 struct p2p_data * p2p_init(const struct p2p_config *cfg); 855 856 /** 857 * p2p_deinit - Deinitialize P2P module 858 * @p2p: P2P module context from p2p_init() 859 */ 860 void p2p_deinit(struct p2p_data *p2p); 861 862 /** 863 * p2p_flush - Flush P2P module state 864 * @p2p: P2P module context from p2p_init() 865 * 866 * This command removes the P2P module state like peer device entries. 867 */ 868 void p2p_flush(struct p2p_data *p2p); 869 870 /** 871 * p2p_unauthorize - Unauthorize the specified peer device 872 * @p2p: P2P module context from p2p_init() 873 * @addr: P2P peer entry to be unauthorized 874 * Returns: 0 on success, -1 on failure 875 * 876 * This command removes any connection authorization from the specified P2P 877 * peer device address. This can be used, e.g., to cancel effect of a previous 878 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 879 * GO Negotiation. 880 */ 881 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 882 883 /** 884 * p2p_set_dev_name - Set device name 885 * @p2p: P2P module context from p2p_init() 886 * Returns: 0 on success, -1 on failure 887 * 888 * This function can be used to update the P2P module configuration with 889 * information that was not available at the time of the p2p_init() call. 890 */ 891 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 892 893 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 894 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 895 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 896 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 897 898 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 899 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 900 901 /** 902 * p2p_set_pri_dev_type - Set primary device type 903 * @p2p: P2P module context from p2p_init() 904 * Returns: 0 on success, -1 on failure 905 * 906 * This function can be used to update the P2P module configuration with 907 * information that was not available at the time of the p2p_init() call. 908 */ 909 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 910 911 /** 912 * p2p_set_sec_dev_types - Set secondary device types 913 * @p2p: P2P module context from p2p_init() 914 * Returns: 0 on success, -1 on failure 915 * 916 * This function can be used to update the P2P module configuration with 917 * information that was not available at the time of the p2p_init() call. 918 */ 919 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 920 size_t num_dev_types); 921 922 int p2p_set_country(struct p2p_data *p2p, const char *country); 923 924 925 /* Commands from upper layer management entity */ 926 927 enum p2p_discovery_type { 928 P2P_FIND_START_WITH_FULL, 929 P2P_FIND_ONLY_SOCIAL, 930 P2P_FIND_PROGRESSIVE 931 }; 932 933 /** 934 * p2p_find - Start P2P Find (Device Discovery) 935 * @p2p: P2P module context from p2p_init() 936 * @timeout: Timeout for find operation in seconds or 0 for no timeout 937 * @type: Device Discovery type 938 * @num_req_dev_types: Number of requested device types 939 * @req_dev_types: Requested device types array, must be an array 940 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 941 * requested device types. 942 * @dev_id: Device ID to search for or %NULL to find all devices 943 * @search_delay: Extra delay in milliseconds between search iterations 944 * Returns: 0 on success, -1 on failure 945 */ 946 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 947 enum p2p_discovery_type type, 948 unsigned int num_req_dev_types, const u8 *req_dev_types, 949 const u8 *dev_id, unsigned int search_delay); 950 951 /** 952 * p2p_stop_find - Stop P2P Find (Device Discovery) 953 * @p2p: P2P module context from p2p_init() 954 */ 955 void p2p_stop_find(struct p2p_data *p2p); 956 957 /** 958 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 959 * @p2p: P2P module context from p2p_init() 960 * @freq: Frequency in MHz for next operation 961 * 962 * This is like p2p_stop_find(), but Listen state is not stopped if we are 963 * already on the same frequency. 964 */ 965 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 966 967 /** 968 * p2p_listen - Start P2P Listen state for specified duration 969 * @p2p: P2P module context from p2p_init() 970 * @timeout: Listen state duration in milliseconds 971 * Returns: 0 on success, -1 on failure 972 * 973 * This function can be used to request the P2P module to keep the device 974 * discoverable on the listen channel for an extended set of time. At least in 975 * its current form, this is mainly used for testing purposes and may not be of 976 * much use for normal P2P operations. 977 */ 978 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 979 980 /** 981 * p2p_stop_listen - Stop P2P Listen 982 * @p2p: P2P module context from p2p_init() 983 */ 984 void p2p_stop_listen(struct p2p_data *p2p); 985 986 /** 987 * p2p_connect - Start P2P group formation (GO negotiation) 988 * @p2p: P2P module context from p2p_init() 989 * @peer_addr: MAC address of the peer P2P client 990 * @wps_method: WPS method to be used in provisioning 991 * @go_intent: Local GO intent value (1..15) 992 * @own_interface_addr: Intended interface address to use with the group 993 * @force_freq: The only allowed channel frequency in MHz or 0 994 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 995 * persistent group without persistent reconnect, 2 = persistent group with 996 * persistent reconnect) 997 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 998 * a new SSID 999 * @force_ssid_len: Length of $force_ssid buffer 1000 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 1001 * Negotiation as an interoperability workaround when initiating group 1002 * formation 1003 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1004 * force_freq == 0) 1005 * Returns: 0 on success, -1 on failure 1006 */ 1007 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1008 enum p2p_wps_method wps_method, 1009 int go_intent, const u8 *own_interface_addr, 1010 unsigned int force_freq, int persistent_group, 1011 const u8 *force_ssid, size_t force_ssid_len, 1012 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id); 1013 1014 /** 1015 * p2p_authorize - Authorize P2P group formation (GO negotiation) 1016 * @p2p: P2P module context from p2p_init() 1017 * @peer_addr: MAC address of the peer P2P client 1018 * @wps_method: WPS method to be used in provisioning 1019 * @go_intent: Local GO intent value (1..15) 1020 * @own_interface_addr: Intended interface address to use with the group 1021 * @force_freq: The only allowed channel frequency in MHz or 0 1022 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 1023 * persistent group without persistent reconnect, 2 = persistent group with 1024 * persistent reconnect) 1025 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 1026 * a new SSID 1027 * @force_ssid_len: Length of $force_ssid buffer 1028 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1029 * force_freq == 0) 1030 * Returns: 0 on success, -1 on failure 1031 * 1032 * This is like p2p_connect(), but the actual group negotiation is not 1033 * initiated automatically, i.e., the other end is expected to do that. 1034 */ 1035 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1036 enum p2p_wps_method wps_method, 1037 int go_intent, const u8 *own_interface_addr, 1038 unsigned int force_freq, int persistent_group, 1039 const u8 *force_ssid, size_t force_ssid_len, 1040 unsigned int pref_freq, u16 oob_pw_id); 1041 1042 /** 1043 * p2p_reject - Reject peer device (explicitly block connection attempts) 1044 * @p2p: P2P module context from p2p_init() 1045 * @peer_addr: MAC address of the peer P2P client 1046 * Returns: 0 on success, -1 on failure 1047 */ 1048 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 1049 1050 /** 1051 * p2p_prov_disc_req - Send Provision Discovery Request 1052 * @p2p: P2P module context from p2p_init() 1053 * @peer_addr: MAC address of the peer P2P client 1054 * @config_methods: WPS Config Methods value (only one bit set) 1055 * @join: Whether this is used by a client joining an active group 1056 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 1057 * @user_initiated_pd: Flag to indicate if initiated by user or not 1058 * Returns: 0 on success, -1 on failure 1059 * 1060 * This function can be used to request a discovered P2P peer to display a PIN 1061 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 1062 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 1063 * is transmitted once immediately and if no response is received, the frame 1064 * will be sent again whenever the target device is discovered during device 1065 * dsicovery (start with a p2p_find() call). Response from the peer is 1066 * indicated with the p2p_config::prov_disc_resp() callback. 1067 */ 1068 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1069 u16 config_methods, int join, int force_freq, 1070 int user_initiated_pd); 1071 1072 /** 1073 * p2p_sd_request - Schedule a service discovery query 1074 * @p2p: P2P module context from p2p_init() 1075 * @dst: Destination peer or %NULL to apply for all peers 1076 * @tlvs: P2P Service Query TLV(s) 1077 * Returns: Reference to the query or %NULL on failure 1078 * 1079 * Response to the query is indicated with the p2p_config::sd_response() 1080 * callback. 1081 */ 1082 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1083 const struct wpabuf *tlvs); 1084 1085 #ifdef CONFIG_WIFI_DISPLAY 1086 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1087 const struct wpabuf *tlvs); 1088 #endif /* CONFIG_WIFI_DISPLAY */ 1089 1090 /** 1091 * p2p_sd_cancel_request - Cancel a pending service discovery query 1092 * @p2p: P2P module context from p2p_init() 1093 * @req: Query reference from p2p_sd_request() 1094 * Returns: 0 if request for cancelled; -1 if not found 1095 */ 1096 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1097 1098 /** 1099 * p2p_sd_response - Send response to a service discovery query 1100 * @p2p: P2P module context from p2p_init() 1101 * @freq: Frequency from p2p_config::sd_request() callback 1102 * @dst: Destination address from p2p_config::sd_request() callback 1103 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1104 * @resp_tlvs: P2P Service Response TLV(s) 1105 * 1106 * This function is called as a response to the request indicated with 1107 * p2p_config::sd_request() callback. 1108 */ 1109 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1110 u8 dialog_token, const struct wpabuf *resp_tlvs); 1111 1112 /** 1113 * p2p_sd_service_update - Indicate a change in local services 1114 * @p2p: P2P module context from p2p_init() 1115 * 1116 * This function needs to be called whenever there is a change in availability 1117 * of the local services. This will increment the Service Update Indicator 1118 * value which will be used in SD Request and Response frames. 1119 */ 1120 void p2p_sd_service_update(struct p2p_data *p2p); 1121 1122 1123 enum p2p_invite_role { 1124 P2P_INVITE_ROLE_GO, 1125 P2P_INVITE_ROLE_ACTIVE_GO, 1126 P2P_INVITE_ROLE_CLIENT 1127 }; 1128 1129 /** 1130 * p2p_invite - Invite a P2P Device into a group 1131 * @p2p: P2P module context from p2p_init() 1132 * @peer: Device Address of the peer P2P Device 1133 * @role: Local role in the group 1134 * @bssid: Group BSSID or %NULL if not known 1135 * @ssid: Group SSID 1136 * @ssid_len: Length of ssid in octets 1137 * @force_freq: The only allowed channel frequency in MHz or 0 1138 * @go_dev_addr: Forced GO Device Address or %NULL if none 1139 * @persistent_group: Whether this is to reinvoke a persistent group 1140 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1141 * force_freq == 0) 1142 * @dev_pw_id: Device Password ID from OOB Device Password (NFC) static handover 1143 * case or -1 if not used 1144 * Returns: 0 on success, -1 on failure 1145 */ 1146 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1147 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1148 unsigned int force_freq, const u8 *go_dev_addr, 1149 int persistent_group, unsigned int pref_freq, int dev_pw_id); 1150 1151 /** 1152 * p2p_presence_req - Request GO presence 1153 * @p2p: P2P module context from p2p_init() 1154 * @go_interface_addr: GO P2P Interface Address 1155 * @own_interface_addr: Own P2P Interface Address for this group 1156 * @freq: Group operating frequence (in MHz) 1157 * @duration1: Preferred presence duration in microseconds 1158 * @interval1: Preferred presence interval in microseconds 1159 * @duration2: Acceptable presence duration in microseconds 1160 * @interval2: Acceptable presence interval in microseconds 1161 * Returns: 0 on success, -1 on failure 1162 * 1163 * If both duration and interval values are zero, the parameter pair is not 1164 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1165 */ 1166 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1167 const u8 *own_interface_addr, unsigned int freq, 1168 u32 duration1, u32 interval1, u32 duration2, 1169 u32 interval2); 1170 1171 /** 1172 * p2p_ext_listen - Set Extended Listen Timing 1173 * @p2p: P2P module context from p2p_init() 1174 * @freq: Group operating frequence (in MHz) 1175 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1176 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1177 * Returns: 0 on success, -1 on failure 1178 * 1179 * This function can be used to enable or disable (period = interval = 0) 1180 * Extended Listen Timing. When enabled, the P2P Device will become 1181 * discoverable (go into Listen State) every @interval milliseconds for at 1182 * least @period milliseconds. 1183 */ 1184 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1185 unsigned int interval); 1186 1187 /* Event notifications from upper layer management operations */ 1188 1189 /** 1190 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1191 * @p2p: P2P module context from p2p_init() 1192 * @mac_addr: Peer address 1193 * 1194 * This function is used to report successfully completed WPS provisioning 1195 * during group formation in both GO/Registrar and client/Enrollee roles. 1196 */ 1197 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1198 1199 /** 1200 * p2p_group_formation_failed - Report failed WPS provisioning 1201 * @p2p: P2P module context from p2p_init() 1202 * 1203 * This function is used to report failed group formation. This can happen 1204 * either due to failed WPS provisioning or due to 15 second timeout during 1205 * the provisioning phase. 1206 */ 1207 void p2p_group_formation_failed(struct p2p_data *p2p); 1208 1209 /** 1210 * p2p_get_provisioning_info - Get any stored provisioning info 1211 * @p2p: P2P module context from p2p_init() 1212 * @addr: Peer P2P Device Address 1213 * Returns: WPS provisioning information (WPS config method) or 0 if no 1214 * information is available 1215 * 1216 * This function is used to retrieve stored WPS provisioning info for the given 1217 * peer. 1218 */ 1219 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1220 1221 /** 1222 * p2p_clear_provisioning_info - Clear any stored provisioning info 1223 * @p2p: P2P module context from p2p_init() 1224 * @iface_addr: Peer P2P Device Address 1225 * 1226 * This function is used to clear stored WPS provisioning info for the given 1227 * peer. 1228 */ 1229 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1230 1231 1232 /* Event notifications from lower layer driver operations */ 1233 1234 /** 1235 * enum p2p_probe_req_status 1236 * 1237 * @P2P_PREQ_MALFORMED: frame was not well-formed 1238 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1239 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1240 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1241 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1242 */ 1243 enum p2p_probe_req_status { 1244 P2P_PREQ_MALFORMED, 1245 P2P_PREQ_NOT_LISTEN, 1246 P2P_PREQ_NOT_P2P, 1247 P2P_PREQ_NOT_PROCESSED, 1248 P2P_PREQ_PROCESSED 1249 }; 1250 1251 /** 1252 * p2p_probe_req_rx - Report reception of a Probe Request frame 1253 * @p2p: P2P module context from p2p_init() 1254 * @addr: Source MAC address 1255 * @dst: Destination MAC address if available or %NULL 1256 * @bssid: BSSID if available or %NULL 1257 * @ie: Information elements from the Probe Request frame body 1258 * @ie_len: Length of ie buffer in octets 1259 * Returns: value indicating the type and status of the probe request 1260 */ 1261 enum p2p_probe_req_status 1262 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1263 const u8 *bssid, const u8 *ie, size_t ie_len); 1264 1265 /** 1266 * p2p_rx_action - Report received Action frame 1267 * @p2p: P2P module context from p2p_init() 1268 * @da: Destination address of the received Action frame 1269 * @sa: Source address of the received Action frame 1270 * @bssid: Address 3 of the received Action frame 1271 * @category: Category of the received Action frame 1272 * @data: Action frame body after the Category field 1273 * @len: Length of the data buffer in octets 1274 * @freq: Frequency (in MHz) on which the frame was received 1275 */ 1276 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1277 const u8 *bssid, u8 category, 1278 const u8 *data, size_t len, int freq); 1279 1280 /** 1281 * p2p_scan_res_handler - Indicate a P2P scan results 1282 * @p2p: P2P module context from p2p_init() 1283 * @bssid: BSSID of the scan result 1284 * @freq: Frequency of the channel on which the device was found in MHz 1285 * @rx_time: Time when the result was received 1286 * @level: Signal level (signal strength of the received Beacon/Probe Response 1287 * frame) 1288 * @ies: Pointer to IEs from the scan result 1289 * @ies_len: Length of the ies buffer 1290 * Returns: 0 to continue or 1 to stop scan result indication 1291 * 1292 * This function is called to indicate a scan result entry with P2P IE from a 1293 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1294 * the actual scan process (i.e., whenever a new device is found) or as a 1295 * sequence of calls after the full scan has been completed. The former option 1296 * can result in optimized operations, but may not be supported by all 1297 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1298 * but it is recommended to include all IEs received from the device. The 1299 * caller does not need to check that the IEs contain a P2P IE before calling 1300 * this function since frames will be filtered internally if needed. 1301 * 1302 * This function will return 1 if it wants to stop scan result iteration (and 1303 * scan in general if it is still in progress). This is used to allow faster 1304 * start of a pending operation, e.g., to start a pending GO negotiation. 1305 */ 1306 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1307 struct os_reltime *rx_time, int level, const u8 *ies, 1308 size_t ies_len); 1309 1310 /** 1311 * p2p_scan_res_handled - Indicate end of scan results 1312 * @p2p: P2P module context from p2p_init() 1313 * 1314 * This function is called to indicate that all P2P scan results from a scan 1315 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1316 * function must be called as a response to successful 1317 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1318 * calls stopped iteration. 1319 */ 1320 void p2p_scan_res_handled(struct p2p_data *p2p); 1321 1322 enum p2p_send_action_result { 1323 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1324 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1325 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1326 }; 1327 1328 /** 1329 * p2p_send_action_cb - Notify TX status of an Action frame 1330 * @p2p: P2P module context from p2p_init() 1331 * @freq: Channel frequency in MHz 1332 * @dst: Destination MAC address (Address 1) 1333 * @src: Source MAC address (Address 2) 1334 * @bssid: BSSID (Address 3) 1335 * @result: Result of the transmission attempt 1336 * 1337 * This function is used to indicate the result of an Action frame transmission 1338 * that was requested with struct p2p_config::send_action() callback. 1339 */ 1340 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1341 const u8 *src, const u8 *bssid, 1342 enum p2p_send_action_result result); 1343 1344 /** 1345 * p2p_listen_cb - Indicate the start of a requested Listen state 1346 * @p2p: P2P module context from p2p_init() 1347 * @freq: Listen channel frequency in MHz 1348 * @duration: Duration for the Listen state in milliseconds 1349 * 1350 * This function is used to indicate that a Listen state requested with 1351 * struct p2p_config::start_listen() callback has started. 1352 */ 1353 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1354 unsigned int duration); 1355 1356 /** 1357 * p2p_listen_end - Indicate the end of a requested Listen state 1358 * @p2p: P2P module context from p2p_init() 1359 * @freq: Listen channel frequency in MHz 1360 * Returns: 0 if no operations were started, 1 if an operation was started 1361 * 1362 * This function is used to indicate that a Listen state requested with 1363 * struct p2p_config::start_listen() callback has ended. 1364 */ 1365 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1366 1367 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1368 const u8 *ie, size_t ie_len); 1369 1370 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1371 const u8 *ie, size_t ie_len); 1372 1373 1374 /* Per-group P2P state for GO */ 1375 1376 struct p2p_group; 1377 1378 /** 1379 * struct p2p_group_config - P2P group configuration 1380 * 1381 * This configuration is provided to the P2P module during initialization of 1382 * the per-group information with p2p_group_init(). 1383 */ 1384 struct p2p_group_config { 1385 /** 1386 * persistent_group - Whether the group is persistent 1387 * 0 = not a persistent group 1388 * 1 = persistent group without persistent reconnect 1389 * 2 = persistent group with persistent reconnect 1390 */ 1391 int persistent_group; 1392 1393 /** 1394 * interface_addr - P2P Interface Address of the group 1395 */ 1396 u8 interface_addr[ETH_ALEN]; 1397 1398 /** 1399 * max_clients - Maximum number of clients in the group 1400 */ 1401 unsigned int max_clients; 1402 1403 /** 1404 * ssid - Group SSID 1405 */ 1406 u8 ssid[32]; 1407 1408 /** 1409 * ssid_len - Length of SSID 1410 */ 1411 size_t ssid_len; 1412 1413 /** 1414 * freq - Operating channel of the group 1415 */ 1416 int freq; 1417 1418 /** 1419 * cb_ctx - Context to use with callback functions 1420 */ 1421 void *cb_ctx; 1422 1423 /** 1424 * ie_update - Notification of IE update 1425 * @ctx: Callback context from cb_ctx 1426 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1427 * @proberesp_ies: P2P Ie for Probe Response frames 1428 * 1429 * P2P module uses this callback function to notify whenever the P2P IE 1430 * in Beacon or Probe Response frames should be updated based on group 1431 * events. 1432 * 1433 * The callee is responsible for freeing the returned buffer(s) with 1434 * wpabuf_free(). 1435 */ 1436 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1437 struct wpabuf *proberesp_ies); 1438 1439 /** 1440 * idle_update - Notification of changes in group idle state 1441 * @ctx: Callback context from cb_ctx 1442 * @idle: Whether the group is idle (no associated stations) 1443 */ 1444 void (*idle_update)(void *ctx, int idle); 1445 }; 1446 1447 /** 1448 * p2p_group_init - Initialize P2P group 1449 * @p2p: P2P module context from p2p_init() 1450 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1451 * Returns: Pointer to private data or %NULL on failure 1452 * 1453 * This function is used to initialize per-group P2P module context. Currently, 1454 * this is only used to manage GO functionality and P2P clients do not need to 1455 * create an instance of this per-group information. 1456 */ 1457 struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1458 struct p2p_group_config *config); 1459 1460 /** 1461 * p2p_group_deinit - Deinitialize P2P group 1462 * @group: P2P group context from p2p_group_init() 1463 */ 1464 void p2p_group_deinit(struct p2p_group *group); 1465 1466 /** 1467 * p2p_group_notif_assoc - Notification of P2P client association with GO 1468 * @group: P2P group context from p2p_group_init() 1469 * @addr: Interface address of the P2P client 1470 * @ie: IEs from the (Re)association Request frame 1471 * @len: Length of the ie buffer in octets 1472 * Returns: 0 on success, -1 on failure 1473 */ 1474 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1475 const u8 *ie, size_t len); 1476 1477 /** 1478 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1479 * @group: P2P group context from p2p_group_init() 1480 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1481 * Returns: P2P IE for (Re)association Response or %NULL on failure 1482 * 1483 * The caller is responsible for freeing the returned buffer with 1484 * wpabuf_free(). 1485 */ 1486 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1487 1488 /** 1489 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1490 * @group: P2P group context from p2p_group_init() 1491 * @addr: Interface address of the P2P client 1492 */ 1493 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1494 1495 /** 1496 * p2p_group_notif_formation_done - Notification of completed group formation 1497 * @group: P2P group context from p2p_group_init() 1498 */ 1499 void p2p_group_notif_formation_done(struct p2p_group *group); 1500 1501 /** 1502 * p2p_group_notif_noa - Notification of NoA change 1503 * @group: P2P group context from p2p_group_init() 1504 * @noa: Notice of Absence attribute payload, %NULL if none 1505 * @noa_len: Length of noa buffer in octets 1506 * Returns: 0 on success, -1 on failure 1507 * 1508 * Notify the P2P group management about a new NoA contents. This will be 1509 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1510 * the group information. 1511 */ 1512 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1513 size_t noa_len); 1514 1515 /** 1516 * p2p_group_match_dev_type - Match device types in group with requested type 1517 * @group: P2P group context from p2p_group_init() 1518 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1519 * Returns: 1 on match, 0 on mismatch 1520 * 1521 * This function can be used to match the Requested Device Type attribute in 1522 * WPS IE with the device types of a group member for deciding whether a GO 1523 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1524 * is not requested any specific device type. 1525 */ 1526 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1527 1528 /** 1529 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1530 */ 1531 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1532 1533 /** 1534 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1535 * @group: P2P group context from p2p_group_init() 1536 * Returns: 0 on success (frame scheduled); -1 if client was not found 1537 */ 1538 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1539 const u8 *searching_dev, int rx_freq); 1540 1541 1542 /* Generic helper functions */ 1543 1544 /** 1545 * p2p_ie_text - Build text format description of P2P IE 1546 * @p2p_ie: P2P IE 1547 * @buf: Buffer for returning text 1548 * @end: Pointer to the end of the buf area 1549 * Returns: Number of octets written to the buffer or -1 on failure 1550 * 1551 * This function can be used to parse P2P IE contents into text format 1552 * field=value lines. 1553 */ 1554 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1555 1556 /** 1557 * p2p_scan_result_text - Build text format description of P2P IE 1558 * @ies: Information elements from scan results 1559 * @ies_len: ies buffer length in octets 1560 * @buf: Buffer for returning text 1561 * @end: Pointer to the end of the buf area 1562 * Returns: Number of octets written to the buffer or -1 on failure 1563 * 1564 * This function can be used to parse P2P IE contents into text format 1565 * field=value lines. 1566 */ 1567 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1568 1569 /** 1570 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1571 * P2P IE 1572 * @p2p_ie: P2P IE 1573 * @dev_addr: Buffer for returning P2P Device Address 1574 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1575 */ 1576 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1577 1578 /** 1579 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1580 * @ies: Information elements from scan results 1581 * @ies_len: ies buffer length in octets 1582 * @dev_addr: Buffer for returning P2P Device Address 1583 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1584 */ 1585 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1586 1587 /** 1588 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1589 * @p2p: P2P module context from p2p_init() 1590 * @bssid: BSSID 1591 * @buf: Buffer for writing the P2P IE 1592 * @len: Maximum buf length in octets 1593 * @p2p_group: Whether this is for association with a P2P GO 1594 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1595 * Returns: Number of octets written into buf or -1 on failure 1596 */ 1597 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1598 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1599 1600 /** 1601 * p2p_scan_ie - Build P2P IE for Probe Request 1602 * @p2p: P2P module context from p2p_init() 1603 * @ies: Buffer for writing P2P IE 1604 * @dev_id: Device ID to search for or %NULL for any 1605 */ 1606 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1607 1608 /** 1609 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1610 * @p2p: P2P module context from p2p_init() 1611 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1612 */ 1613 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1614 1615 /** 1616 * p2p_go_params - Generate random P2P group parameters 1617 * @p2p: P2P module context from p2p_init() 1618 * @params: Buffer for parameters 1619 * Returns: 0 on success, -1 on failure 1620 */ 1621 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1622 1623 /** 1624 * p2p_get_group_capab - Get Group Capability from P2P IE data 1625 * @p2p_ie: P2P IE(s) contents 1626 * Returns: Group Capability 1627 */ 1628 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1629 1630 /** 1631 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1632 * @p2p_ie: P2P IE(s) contents 1633 * Returns: 0 if cross connection is allow, 1 if not 1634 */ 1635 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1636 1637 /** 1638 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1639 * @p2p_ie: P2P IE(s) contents 1640 * Returns: Pointer to P2P Device Address or %NULL if not included 1641 */ 1642 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1643 1644 /** 1645 * p2p_get_peer_info - Get P2P peer information 1646 * @p2p: P2P module context from p2p_init() 1647 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1648 * @next: Whether to select the peer entry following the one indicated by addr 1649 * Returns: Pointer to peer info or %NULL if not found 1650 */ 1651 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1652 const u8 *addr, int next); 1653 1654 /** 1655 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1656 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1657 * @buf: Buffer for returning text 1658 * @buflen: Maximum buffer length 1659 * Returns: Number of octets written to the buffer or -1 on failure 1660 * 1661 * Note: This information is internal to the P2P module and subject to change. 1662 * As such, this should not really be used by external programs for purposes 1663 * other than debugging. 1664 */ 1665 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1666 char *buf, size_t buflen); 1667 1668 /** 1669 * p2p_peer_known - Check whether P2P peer is known 1670 * @p2p: P2P module context from p2p_init() 1671 * @addr: P2P Device Address of the peer 1672 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1673 */ 1674 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1675 1676 /** 1677 * p2p_set_client_discoverability - Set client discoverability capability 1678 * @p2p: P2P module context from p2p_init() 1679 * @enabled: Whether client discoverability will be enabled 1680 * 1681 * This function can be used to disable (and re-enable) client discoverability. 1682 * This capability is enabled by default and should not be disabled in normal 1683 * use cases, i.e., this is mainly for testing purposes. 1684 */ 1685 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1686 1687 /** 1688 * p2p_set_managed_oper - Set managed P2P Device operations capability 1689 * @p2p: P2P module context from p2p_init() 1690 * @enabled: Whether managed P2P Device operations will be enabled 1691 */ 1692 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1693 1694 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel, 1695 u8 forced); 1696 1697 u8 p2p_get_listen_channel(struct p2p_data *p2p); 1698 1699 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1700 1701 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1702 u8 *iface_addr); 1703 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1704 u8 *dev_addr); 1705 1706 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1707 1708 /** 1709 * p2p_set_cross_connect - Set cross connection capability 1710 * @p2p: P2P module context from p2p_init() 1711 * @enabled: Whether cross connection will be enabled 1712 */ 1713 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1714 1715 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1716 1717 /** 1718 * p2p_set_intra_bss_dist - Set intra BSS distribution 1719 * @p2p: P2P module context from p2p_init() 1720 * @enabled: Whether intra BSS distribution will be enabled 1721 */ 1722 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1723 1724 int p2p_channels_includes_freq(const struct p2p_channels *channels, 1725 unsigned int freq); 1726 1727 /** 1728 * p2p_supported_freq - Check whether channel is supported for P2P 1729 * @p2p: P2P module context from p2p_init() 1730 * @freq: Channel frequency in MHz 1731 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1732 */ 1733 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1734 1735 /** 1736 * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation 1737 * @p2p: P2P module context from p2p_init() 1738 * @freq: Channel frequency in MHz 1739 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1740 */ 1741 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq); 1742 1743 /** 1744 * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation 1745 * @p2p: P2P module context from p2p_init() 1746 * @freq: Channel frequency in MHz 1747 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1748 */ 1749 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq); 1750 1751 /** 1752 * p2p_get_pref_freq - Get channel from preferred channel list 1753 * @p2p: P2P module context from p2p_init() 1754 * @channels: List of channels 1755 * Returns: Preferred channel 1756 */ 1757 unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 1758 const struct p2p_channels *channels); 1759 1760 void p2p_update_channel_list(struct p2p_data *p2p, 1761 const struct p2p_channels *chan, 1762 const struct p2p_channels *cli_chan); 1763 1764 /** 1765 * p2p_set_best_channels - Update best channel information 1766 * @p2p: P2P module context from p2p_init() 1767 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1768 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1769 * @freq_overall: Frequency (MHz) of best channel overall 1770 */ 1771 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1772 int freq_overall); 1773 1774 /** 1775 * p2p_set_own_freq_preference - Set own preference for channel 1776 * @p2p: P2P module context from p2p_init() 1777 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 1778 * 1779 * This function can be used to set a preference on the operating channel based 1780 * on frequencies used on the other virtual interfaces that share the same 1781 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 1782 */ 1783 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 1784 1785 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1786 1787 /** 1788 * p2p_get_group_num_members - Get number of members in group 1789 * @group: P2P group context from p2p_group_init() 1790 * Returns: Number of members in the group 1791 */ 1792 unsigned int p2p_get_group_num_members(struct p2p_group *group); 1793 1794 /** 1795 * p2p_iterate_group_members - Iterate group members 1796 * @group: P2P group context from p2p_group_init() 1797 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1798 * on the first call and not modified later 1799 * Returns: A P2P Device Address for each call and %NULL for no more members 1800 */ 1801 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1802 1803 /** 1804 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1805 * @group: P2P group context from p2p_group_init() 1806 * @addr: P2P Interface Address of the client 1807 * Returns: P2P Device Address of the client if found or %NULL if no match 1808 * found 1809 */ 1810 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1811 1812 /** 1813 * p2p_group_is_client_connected - Check whether a specific client is connected 1814 * @group: P2P group context from p2p_group_init() 1815 * @addr: P2P Device Address of the client 1816 * Returns: 1 if client is connected or 0 if not 1817 */ 1818 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1819 1820 /** 1821 * p2p_group_get_config - Get the group configuration 1822 * @group: P2P group context from p2p_group_init() 1823 * Returns: The group configuration pointer 1824 */ 1825 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group); 1826 1827 /** 1828 * p2p_loop_on_all_groups - Run the given callback on all groups 1829 * @p2p: P2P module context from p2p_init() 1830 * @group_callback: The callback function pointer 1831 * @user_data: Some user data pointer which can be %NULL 1832 * 1833 * The group_callback function can stop the iteration by returning 0. 1834 */ 1835 void p2p_loop_on_all_groups(struct p2p_data *p2p, 1836 int (*group_callback)(struct p2p_group *group, 1837 void *user_data), 1838 void *user_data); 1839 1840 /** 1841 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1842 * @p2p: P2P module context from p2p_init() 1843 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1844 * @next: Whether to select the peer entry following the one indicated by addr 1845 * Returns: The first P2P peer info available or %NULL if no such peer exists 1846 */ 1847 const struct p2p_peer_info * 1848 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1849 1850 /** 1851 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1852 * @p2p: P2P module context from p2p_init() 1853 */ 1854 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1855 1856 /** 1857 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1858 * @p2p: P2P module context from p2p_init() 1859 * @vendor_ext: The vendor extensions to add 1860 * Returns: 0 on success, -1 on failure 1861 * 1862 * The wpabuf structures in the array are owned by the P2P 1863 * module after this call. 1864 */ 1865 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1866 const struct wpabuf *vendor_ext); 1867 1868 /** 1869 * p2p_set_oper_channel - Set the P2P operating channel 1870 * @p2p: P2P module context from p2p_init() 1871 * @op_reg_class: Operating regulatory class to set 1872 * @op_channel: operating channel to set 1873 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1874 * Returns: 0 on success, -1 on failure 1875 */ 1876 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1877 int cfg_op_channel); 1878 1879 /** 1880 * p2p_set_pref_chan - Set P2P preferred channel list 1881 * @p2p: P2P module context from p2p_init() 1882 * @num_pref_chan: Number of entries in pref_chan list 1883 * @pref_chan: Preferred channels or %NULL to remove preferences 1884 * Returns: 0 on success, -1 on failure 1885 */ 1886 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1887 const struct p2p_channel *pref_chan); 1888 1889 /** 1890 * p2p_set_no_go_freq - Set no GO channel ranges 1891 * @p2p: P2P module context from p2p_init() 1892 * @list: Channel ranges or %NULL to remove restriction 1893 * Returns: 0 on success, -1 on failure 1894 */ 1895 int p2p_set_no_go_freq(struct p2p_data *p2p, 1896 const struct wpa_freq_range_list *list); 1897 1898 /** 1899 * p2p_in_progress - Check whether a P2P operation is progress 1900 * @p2p: P2P module context from p2p_init() 1901 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1902 */ 1903 int p2p_in_progress(struct p2p_data *p2p); 1904 1905 const char * p2p_wps_method_text(enum p2p_wps_method method); 1906 1907 /** 1908 * p2p_set_config_timeout - Set local config timeouts 1909 * @p2p: P2P module context from p2p_init() 1910 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1911 * @client_timeout: Time in 10 ms units it takes to start the client mode 1912 */ 1913 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1914 u8 client_timeout); 1915 1916 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1917 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1918 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1919 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1920 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1921 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1922 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1923 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1924 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1925 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1926 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1927 const struct wpabuf *elem); 1928 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1929 1930 /** 1931 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 1932 * @p2p: P2P module context from p2p_init() 1933 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 1934 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 1935 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 1936 * -1 not to limit 1937 * Returns: 0 on success, or -1 on failure 1938 * 1939 * This function can be used to configure minDiscoverableInterval and 1940 * maxDiscoverableInterval parameters for the Listen state during device 1941 * discovery (p2p_find). A random number of 100 TU units is picked for each 1942 * Listen state iteration from [min_disc_int,max_disc_int] range. 1943 * 1944 * max_disc_tu can be used to futher limit the discoverable duration. However, 1945 * it should be noted that use of this parameter is not recommended since it 1946 * would not be compliant with the P2P specification. 1947 */ 1948 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 1949 int max_disc_tu); 1950 1951 /** 1952 * p2p_get_state_txt - Get current P2P state for debug purposes 1953 * @p2p: P2P module context from p2p_init() 1954 * Returns: Name of the current P2P module state 1955 * 1956 * It should be noted that the P2P module state names are internal information 1957 * and subject to change at any point, i.e., this information should be used 1958 * mainly for debugging purposes. 1959 */ 1960 const char * p2p_get_state_txt(struct p2p_data *p2p); 1961 1962 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p, 1963 int client_freq, 1964 const u8 *go_dev_addr, 1965 const u8 *ssid, size_t ssid_len); 1966 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p, 1967 int client_freq, 1968 const u8 *go_dev_addr, 1969 const u8 *ssid, size_t ssid_len); 1970 1971 struct p2p_nfc_params { 1972 int sel; 1973 const u8 *wsc_attr; 1974 size_t wsc_len; 1975 const u8 *p2p_attr; 1976 size_t p2p_len; 1977 1978 enum { 1979 NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG, 1980 BOTH_GO, PEER_CLIENT 1981 } next_step; 1982 struct p2p_peer_info *peer; 1983 u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 + 1984 WPS_OOB_DEVICE_PASSWORD_LEN]; 1985 size_t oob_dev_pw_len; 1986 int go_freq; 1987 u8 go_dev_addr[ETH_ALEN]; 1988 u8 go_ssid[32]; 1989 size_t go_ssid_len; 1990 }; 1991 1992 int p2p_process_nfc_connection_handover(struct p2p_data *p2p, 1993 struct p2p_nfc_params *params); 1994 1995 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id, 1996 int go_intent, 1997 const u8 *own_interface_addr); 1998 1999 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len); 2000 2001 void p2p_loop_on_known_peers(struct p2p_data *p2p, 2002 void (*peer_callback)(struct p2p_peer_info *peer, 2003 void *user_data), 2004 void *user_data); 2005 2006 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem); 2007 2008 #endif /* P2P_H */ 2009