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 "common/ieee802_11_defs.h" 13 #include "wps/wps.h" 14 15 /* P2P ASP Setup Capability */ 16 #define P2PS_SETUP_NONE 0 17 #define P2PS_SETUP_NEW BIT(0) 18 #define P2PS_SETUP_CLIENT BIT(1) 19 #define P2PS_SETUP_GROUP_OWNER BIT(2) 20 21 #define P2PS_WILD_HASH_STR "org.wi-fi.wfds" 22 #define P2PS_HASH_LEN 6 23 #define P2P_MAX_QUERY_HASH 6 24 25 /** 26 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 27 */ 28 #define P2P_MAX_REG_CLASSES 10 29 30 /** 31 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 32 */ 33 #define P2P_MAX_REG_CLASS_CHANNELS 20 34 35 /** 36 * struct p2p_channels - List of supported channels 37 */ 38 struct p2p_channels { 39 /** 40 * struct p2p_reg_class - Supported regulatory class 41 */ 42 struct p2p_reg_class { 43 /** 44 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 45 */ 46 u8 reg_class; 47 48 /** 49 * channel - Supported channels 50 */ 51 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 52 53 /** 54 * channels - Number of channel entries in use 55 */ 56 size_t channels; 57 } reg_class[P2P_MAX_REG_CLASSES]; 58 59 /** 60 * reg_classes - Number of reg_class entries in use 61 */ 62 size_t reg_classes; 63 }; 64 65 enum p2p_wps_method { 66 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC, WPS_NFC, 67 WPS_P2PS 68 }; 69 70 /** 71 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 72 */ 73 struct p2p_go_neg_results { 74 /** 75 * status - Negotiation result (Status Code) 76 * 77 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 78 * failed negotiation. 79 */ 80 int status; 81 82 /** 83 * role_go - Whether local end is Group Owner 84 */ 85 int role_go; 86 87 /** 88 * freq - Frequency of the group operational channel in MHz 89 */ 90 int freq; 91 92 int ht40; 93 94 int vht; 95 96 /** 97 * ssid - SSID of the group 98 */ 99 u8 ssid[SSID_MAX_LEN]; 100 101 /** 102 * ssid_len - Length of SSID in octets 103 */ 104 size_t ssid_len; 105 106 /** 107 * psk - WPA pre-shared key (256 bits) (GO only) 108 */ 109 u8 psk[32]; 110 111 /** 112 * psk_set - Whether PSK field is configured (GO only) 113 */ 114 int psk_set; 115 116 /** 117 * passphrase - WPA2-Personal passphrase for the group (GO only) 118 */ 119 char passphrase[64]; 120 121 /** 122 * peer_device_addr - P2P Device Address of the peer 123 */ 124 u8 peer_device_addr[ETH_ALEN]; 125 126 /** 127 * peer_interface_addr - P2P Interface Address of the peer 128 */ 129 u8 peer_interface_addr[ETH_ALEN]; 130 131 /** 132 * wps_method - WPS method to be used during provisioning 133 */ 134 enum p2p_wps_method wps_method; 135 136 #define P2P_MAX_CHANNELS 50 137 138 /** 139 * freq_list - Zero-terminated list of possible operational channels 140 */ 141 int freq_list[P2P_MAX_CHANNELS]; 142 143 /** 144 * persistent_group - Whether the group should be made persistent 145 * 0 = not persistent 146 * 1 = persistent group without persistent reconnect 147 * 2 = persistent group with persistent reconnect 148 */ 149 int persistent_group; 150 151 /** 152 * peer_config_timeout - Peer configuration timeout (in 10 msec units) 153 */ 154 unsigned int peer_config_timeout; 155 }; 156 157 struct p2ps_provision { 158 /** 159 * status - Remote returned provisioning status code 160 */ 161 int status; 162 163 /** 164 * adv_id - P2PS Advertisement ID 165 */ 166 u32 adv_id; 167 168 /** 169 * session_id - P2PS Session ID 170 */ 171 u32 session_id; 172 173 /** 174 * method - WPS Method (to be) used to establish session 175 */ 176 u16 method; 177 178 /** 179 * conncap - Connection Capabilities negotiated between P2P peers 180 */ 181 u8 conncap; 182 183 /** 184 * role - Info about the roles to be used for this connection 185 */ 186 u8 role; 187 188 /** 189 * session_mac - MAC address of the peer that started the session 190 */ 191 u8 session_mac[ETH_ALEN]; 192 193 /** 194 * adv_mac - MAC address of the peer advertised the service 195 */ 196 u8 adv_mac[ETH_ALEN]; 197 198 /** 199 * info - Vendor defined extra Provisioning information 200 */ 201 char info[0]; 202 }; 203 204 struct p2ps_advertisement { 205 struct p2ps_advertisement *next; 206 207 /** 208 * svc_info - Pointer to (internal) Service defined information 209 */ 210 char *svc_info; 211 212 /** 213 * id - P2PS Advertisement ID 214 */ 215 u32 id; 216 217 /** 218 * config_methods - WPS Methods which are allowed for this service 219 */ 220 u16 config_methods; 221 222 /** 223 * state - Current state of the service: 0 - Out Of Service, 1-255 Vendor defined 224 */ 225 u8 state; 226 227 /** 228 * auto_accept - Automatically Accept provisioning request if possible. 229 */ 230 u8 auto_accept; 231 232 /** 233 * hash - 6 octet Service Name has to match against incoming Probe Requests 234 */ 235 u8 hash[P2PS_HASH_LEN]; 236 237 /** 238 * svc_name - NULL Terminated UTF-8 Service Name, and svc_info storage 239 */ 240 char svc_name[0]; 241 }; 242 243 244 struct p2p_data; 245 246 enum p2p_scan_type { 247 P2P_SCAN_SOCIAL, 248 P2P_SCAN_FULL, 249 P2P_SCAN_SPECIFIC, 250 P2P_SCAN_SOCIAL_PLUS_ONE 251 }; 252 253 #define P2P_MAX_WPS_VENDOR_EXT 10 254 255 /** 256 * struct p2p_peer_info - P2P peer information 257 */ 258 struct p2p_peer_info { 259 /** 260 * p2p_device_addr - P2P Device Address of the peer 261 */ 262 u8 p2p_device_addr[ETH_ALEN]; 263 264 /** 265 * pri_dev_type - Primary Device Type 266 */ 267 u8 pri_dev_type[8]; 268 269 /** 270 * device_name - Device Name (0..32 octets encoded in UTF-8) 271 */ 272 char device_name[WPS_DEV_NAME_MAX_LEN + 1]; 273 274 /** 275 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 276 */ 277 char manufacturer[WPS_MANUFACTURER_MAX_LEN + 1]; 278 279 /** 280 * model_name - Model Name (0..32 octets encoded in UTF-8) 281 */ 282 char model_name[WPS_MODEL_NAME_MAX_LEN + 1]; 283 284 /** 285 * model_number - Model Number (0..32 octets encoded in UTF-8) 286 */ 287 char model_number[WPS_MODEL_NUMBER_MAX_LEN + 1]; 288 289 /** 290 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 291 */ 292 char serial_number[WPS_SERIAL_NUMBER_MAX_LEN + 1]; 293 294 /** 295 * level - Signal level 296 */ 297 int level; 298 299 /** 300 * config_methods - WPS Configuration Methods 301 */ 302 u16 config_methods; 303 304 /** 305 * dev_capab - Device Capabilities 306 */ 307 u8 dev_capab; 308 309 /** 310 * group_capab - Group Capabilities 311 */ 312 u8 group_capab; 313 314 /** 315 * wps_sec_dev_type_list - WPS secondary device type list 316 * 317 * This list includes from 0 to 16 Secondary Device Types as indicated 318 * by wps_sec_dev_type_list_len (8 * number of types). 319 */ 320 u8 wps_sec_dev_type_list[WPS_SEC_DEV_TYPE_MAX_LEN]; 321 322 /** 323 * wps_sec_dev_type_list_len - Length of secondary device type list 324 */ 325 size_t wps_sec_dev_type_list_len; 326 327 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 328 329 /** 330 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s) 331 */ 332 struct wpabuf *wfd_subelems; 333 334 /** 335 * vendor_elems - Unrecognized vendor elements 336 * 337 * This buffer includes any other vendor element than P2P, WPS, and WFD 338 * IE(s) from the frame that was used to discover the peer. 339 */ 340 struct wpabuf *vendor_elems; 341 342 /** 343 * p2ps_instance - P2PS Application Service Info 344 */ 345 struct wpabuf *p2ps_instance; 346 }; 347 348 enum p2p_prov_disc_status { 349 P2P_PROV_DISC_SUCCESS, 350 P2P_PROV_DISC_TIMEOUT, 351 P2P_PROV_DISC_REJECTED, 352 P2P_PROV_DISC_TIMEOUT_JOIN, 353 P2P_PROV_DISC_INFO_UNAVAILABLE, 354 }; 355 356 struct p2p_channel { 357 u8 op_class; 358 u8 chan; 359 }; 360 361 /** 362 * struct p2p_config - P2P configuration 363 * 364 * This configuration is provided to the P2P module during initialization with 365 * p2p_init(). 366 */ 367 struct p2p_config { 368 /** 369 * country - Country code to use in P2P operations 370 */ 371 char country[3]; 372 373 /** 374 * reg_class - Regulatory class for own listen channel 375 */ 376 u8 reg_class; 377 378 /** 379 * channel - Own listen channel 380 */ 381 u8 channel; 382 383 /** 384 * channel_forced - the listen channel was forced by configuration 385 * or by control interface and cannot be overridden 386 */ 387 u8 channel_forced; 388 389 /** 390 * Regulatory class for own operational channel 391 */ 392 u8 op_reg_class; 393 394 /** 395 * op_channel - Own operational channel 396 */ 397 u8 op_channel; 398 399 /** 400 * cfg_op_channel - Whether op_channel is hardcoded in configuration 401 */ 402 u8 cfg_op_channel; 403 404 /** 405 * channels - Own supported regulatory classes and channels 406 * 407 * List of supposerted channels per regulatory class. The regulatory 408 * classes are defined in IEEE Std 802.11-2007 Annex J and the 409 * numbering of the clases depends on the configured country code. 410 */ 411 struct p2p_channels channels; 412 413 /** 414 * cli_channels - Additional client channels 415 * 416 * This list of channels (if any) will be used when advertising local 417 * channels during GO Negotiation or Invitation for the cases where the 418 * local end may become the client. This may allow the peer to become a 419 * GO on additional channels if it supports these options. The main use 420 * case for this is to include passive-scan channels on devices that may 421 * not know their current location and have configured most channels to 422 * not allow initiation of radition (i.e., another device needs to take 423 * master responsibilities). 424 */ 425 struct p2p_channels cli_channels; 426 427 /** 428 * num_pref_chan - Number of pref_chan entries 429 */ 430 unsigned int num_pref_chan; 431 432 /** 433 * pref_chan - Preferred channels for GO Negotiation 434 */ 435 struct p2p_channel *pref_chan; 436 437 /** 438 * pri_dev_type - Primary Device Type (see WPS) 439 */ 440 u8 pri_dev_type[8]; 441 442 /** 443 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 444 */ 445 #define P2P_SEC_DEVICE_TYPES 5 446 447 /** 448 * sec_dev_type - Optional secondary device types 449 */ 450 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 451 452 /** 453 * num_sec_dev_types - Number of sec_dev_type entries 454 */ 455 size_t num_sec_dev_types; 456 457 /** 458 * dev_addr - P2P Device Address 459 */ 460 u8 dev_addr[ETH_ALEN]; 461 462 /** 463 * dev_name - Device Name 464 */ 465 char *dev_name; 466 467 char *manufacturer; 468 char *model_name; 469 char *model_number; 470 char *serial_number; 471 472 u8 uuid[16]; 473 u16 config_methods; 474 475 /** 476 * concurrent_operations - Whether concurrent operations are supported 477 */ 478 int concurrent_operations; 479 480 /** 481 * max_peers - Maximum number of discovered peers to remember 482 * 483 * If more peers are discovered, older entries will be removed to make 484 * room for the new ones. 485 */ 486 size_t max_peers; 487 488 /** 489 * p2p_intra_bss - Intra BSS communication is supported 490 */ 491 int p2p_intra_bss; 492 493 /** 494 * ssid_postfix - Postfix data to add to the SSID 495 * 496 * This data will be added to the end of the SSID after the 497 * DIRECT-<random two octets> prefix. 498 */ 499 u8 ssid_postfix[SSID_MAX_LEN - 9]; 500 501 /** 502 * ssid_postfix_len - Length of the ssid_postfix data 503 */ 504 size_t ssid_postfix_len; 505 506 /** 507 * max_listen - Maximum listen duration in ms 508 */ 509 unsigned int max_listen; 510 511 /** 512 * passphrase_len - Passphrase length (8..63) 513 * 514 * This parameter controls the length of the random passphrase that is 515 * generated at the GO. 516 */ 517 unsigned int passphrase_len; 518 519 /** 520 * cb_ctx - Context to use with callback functions 521 */ 522 void *cb_ctx; 523 524 /** 525 * debug_print - Debug print 526 * @ctx: Callback context from cb_ctx 527 * @level: Debug verbosity level (MSG_*) 528 * @msg: Debug message 529 */ 530 void (*debug_print)(void *ctx, int level, const char *msg); 531 532 533 /* Callbacks to request lower layer driver operations */ 534 535 /** 536 * p2p_scan - Request a P2P scan/search 537 * @ctx: Callback context from cb_ctx 538 * @type: Scan type 539 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 540 * @num_req_dev_types: Number of requested device types 541 * @req_dev_types: Array containing requested device types 542 * @dev_id: Device ID to search for or %NULL to find all devices 543 * @pw_id: Device Password ID 544 * Returns: 0 on success, -1 on failure 545 * 546 * This callback function is used to request a P2P scan or search 547 * operation to be completed. Type type argument specifies which type 548 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 549 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 550 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC 551 * request a scan of a single channel specified by freq. 552 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 553 * plus one extra channel specified by freq. 554 * 555 * The full scan is used for the initial scan to find group owners from 556 * all. The other types are used during search phase scan of the social 557 * channels (with potential variation if the Listen channel of the 558 * target peer is known or if other channels are scanned in steps). 559 * 560 * The scan results are returned after this call by calling 561 * p2p_scan_res_handler() for each scan result that has a P2P IE and 562 * then calling p2p_scan_res_handled() to indicate that all scan 563 * results have been indicated. 564 */ 565 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 566 unsigned int num_req_dev_types, 567 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 568 569 /** 570 * send_probe_resp - Transmit a Probe Response frame 571 * @ctx: Callback context from cb_ctx 572 * @buf: Probe Response frame (including the header and body) 573 * @freq: Forced frequency (in MHz) to use or 0. 574 * Returns: 0 on success, -1 on failure 575 * 576 * This function is used to reply to Probe Request frames that were 577 * indicated with a call to p2p_probe_req_rx(). The response is to be 578 * sent on the same channel, unless otherwise specified, or to be 579 * dropped if the driver is not listening to Probe Request frames 580 * anymore. 581 * 582 * Alternatively, the responsibility for building the Probe Response 583 * frames in Listen state may be in another system component in which 584 * case this function need to be implemented (i.e., the function 585 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 586 * Response frames in such a case are available from the 587 * start_listen() callback. It should be noted that the received Probe 588 * Request frames must be indicated by calling p2p_probe_req_rx() even 589 * if this send_probe_resp() is not used. 590 */ 591 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf, 592 unsigned int freq); 593 594 /** 595 * send_action - Transmit an Action frame 596 * @ctx: Callback context from cb_ctx 597 * @freq: Frequency in MHz for the channel on which to transmit 598 * @dst: Destination MAC address (Address 1) 599 * @src: Source MAC address (Address 2) 600 * @bssid: BSSID (Address 3) 601 * @buf: Frame body (starting from Category field) 602 * @len: Length of buf in octets 603 * @wait_time: How many msec to wait for a response frame 604 * Returns: 0 on success, -1 on failure 605 * 606 * The Action frame may not be transmitted immediately and the status 607 * of the transmission must be reported by calling 608 * p2p_send_action_cb() once the frame has either been transmitted or 609 * it has been dropped due to excessive retries or other failure to 610 * transmit. 611 */ 612 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 613 const u8 *src, const u8 *bssid, const u8 *buf, 614 size_t len, unsigned int wait_time); 615 616 /** 617 * send_action_done - Notify that Action frame sequence was completed 618 * @ctx: Callback context from cb_ctx 619 * 620 * This function is called when the Action frame sequence that was 621 * started with send_action() has been completed, i.e., when there is 622 * no need to wait for a response from the destination peer anymore. 623 */ 624 void (*send_action_done)(void *ctx); 625 626 /** 627 * start_listen - Start Listen state 628 * @ctx: Callback context from cb_ctx 629 * @freq: Frequency of the listen channel in MHz 630 * @duration: Duration for the Listen state in milliseconds 631 * @probe_resp_ie: IE(s) to be added to Probe Response frames 632 * Returns: 0 on success, -1 on failure 633 * 634 * This Listen state may not start immediately since the driver may 635 * have other pending operations to complete first. Once the Listen 636 * state has started, p2p_listen_cb() must be called to notify the P2P 637 * module. Once the Listen state is stopped, p2p_listen_end() must be 638 * called to notify the P2P module that the driver is not in the Listen 639 * state anymore. 640 * 641 * If the send_probe_resp() is not used for generating the response, 642 * the IEs from probe_resp_ie need to be added to the end of the Probe 643 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 644 * information can be ignored. 645 */ 646 int (*start_listen)(void *ctx, unsigned int freq, 647 unsigned int duration, 648 const struct wpabuf *probe_resp_ie); 649 /** 650 * stop_listen - Stop Listen state 651 * @ctx: Callback context from cb_ctx 652 * 653 * This callback can be used to stop a Listen state operation that was 654 * previously requested with start_listen(). 655 */ 656 void (*stop_listen)(void *ctx); 657 658 /** 659 * get_noa - Get current Notice of Absence attribute payload 660 * @ctx: Callback context from cb_ctx 661 * @interface_addr: P2P Interface Address of the GO 662 * @buf: Buffer for returning NoA 663 * @buf_len: Buffer length in octets 664 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 665 * advertized, or -1 on failure 666 * 667 * This function is used to fetch the current Notice of Absence 668 * attribute value from GO. 669 */ 670 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 671 size_t buf_len); 672 673 /* Callbacks to notify events to upper layer management entity */ 674 675 /** 676 * dev_found - Notification of a found P2P Device 677 * @ctx: Callback context from cb_ctx 678 * @addr: Source address of the message triggering this notification 679 * @info: P2P peer information 680 * @new_device: Inform if the peer is newly found 681 * 682 * This callback is used to notify that a new P2P Device has been 683 * found. This may happen, e.g., during Search state based on scan 684 * results or during Listen state based on receive Probe Request and 685 * Group Owner Negotiation Request. 686 */ 687 void (*dev_found)(void *ctx, const u8 *addr, 688 const struct p2p_peer_info *info, 689 int new_device); 690 691 /** 692 * dev_lost - Notification of a lost P2P Device 693 * @ctx: Callback context from cb_ctx 694 * @dev_addr: P2P Device Address of the lost P2P Device 695 * 696 * This callback is used to notify that a P2P Device has been deleted. 697 */ 698 void (*dev_lost)(void *ctx, const u8 *dev_addr); 699 700 /** 701 * find_stopped - Notification of a p2p_find operation stopping 702 * @ctx: Callback context from cb_ctx 703 */ 704 void (*find_stopped)(void *ctx); 705 706 /** 707 * go_neg_req_rx - Notification of a receive GO Negotiation Request 708 * @ctx: Callback context from cb_ctx 709 * @src: Source address of the message triggering this notification 710 * @dev_passwd_id: WPS Device Password ID 711 * @go_intent: Peer's GO Intent 712 * 713 * This callback is used to notify that a P2P Device is requesting 714 * group owner negotiation with us, but we do not have all the 715 * necessary information to start GO Negotiation. This indicates that 716 * the local user has not authorized the connection yet by providing a 717 * PIN or PBC button press. This information can be provided with a 718 * call to p2p_connect(). 719 */ 720 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id, 721 u8 go_intent); 722 723 /** 724 * go_neg_completed - Notification of GO Negotiation results 725 * @ctx: Callback context from cb_ctx 726 * @res: GO Negotiation results 727 * 728 * This callback is used to notify that Group Owner Negotiation has 729 * been completed. Non-zero struct p2p_go_neg_results::status indicates 730 * failed negotiation. In case of success, this function is responsible 731 * for creating a new group interface (or using the existing interface 732 * depending on driver features), setting up the group interface in 733 * proper mode based on struct p2p_go_neg_results::role_go and 734 * initializing WPS provisioning either as a Registrar (if GO) or as an 735 * Enrollee. Successful WPS provisioning must be indicated by calling 736 * p2p_wps_success_cb(). The callee is responsible for timing out group 737 * formation if WPS provisioning cannot be completed successfully 738 * within 15 seconds. 739 */ 740 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 741 742 /** 743 * sd_request - Callback on Service Discovery Request 744 * @ctx: Callback context from cb_ctx 745 * @freq: Frequency (in MHz) of the channel 746 * @sa: Source address of the request 747 * @dialog_token: Dialog token 748 * @update_indic: Service Update Indicator from the source of request 749 * @tlvs: P2P Service Request TLV(s) 750 * @tlvs_len: Length of tlvs buffer in octets 751 * 752 * This callback is used to indicate reception of a service discovery 753 * request. Response to the query must be indicated by calling 754 * p2p_sd_response() with the context information from the arguments to 755 * this callback function. 756 * 757 * This callback handler can be set to %NULL to indicate that service 758 * discovery is not supported. 759 */ 760 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 761 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 762 763 /** 764 * sd_response - Callback on Service Discovery Response 765 * @ctx: Callback context from cb_ctx 766 * @sa: Source address of the request 767 * @update_indic: Service Update Indicator from the source of response 768 * @tlvs: P2P Service Response TLV(s) 769 * @tlvs_len: Length of tlvs buffer in octets 770 * 771 * This callback is used to indicate reception of a service discovery 772 * response. This callback handler can be set to %NULL if no service 773 * discovery requests are used. The information provided with this call 774 * is replies to the queries scheduled with p2p_sd_request(). 775 */ 776 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 777 const u8 *tlvs, size_t tlvs_len); 778 779 /** 780 * prov_disc_req - Callback on Provisiong Discovery Request 781 * @ctx: Callback context from cb_ctx 782 * @peer: Source address of the request 783 * @config_methods: Requested WPS Config Method 784 * @dev_addr: P2P Device Address of the found P2P Device 785 * @pri_dev_type: Primary Device Type 786 * @dev_name: Device Name 787 * @supp_config_methods: Supported configuration Methods 788 * @dev_capab: Device Capabilities 789 * @group_capab: Group Capabilities 790 * @group_id: P2P Group ID (or %NULL if not included) 791 * @group_id_len: Length of P2P Group ID 792 * 793 * This callback is used to indicate reception of a Provision Discovery 794 * Request frame that the P2P module accepted. 795 */ 796 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 797 const u8 *dev_addr, const u8 *pri_dev_type, 798 const char *dev_name, u16 supp_config_methods, 799 u8 dev_capab, u8 group_capab, 800 const u8 *group_id, size_t group_id_len); 801 802 /** 803 * prov_disc_resp - Callback on Provisiong Discovery Response 804 * @ctx: Callback context from cb_ctx 805 * @peer: Source address of the response 806 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 807 * 808 * This callback is used to indicate reception of a Provision Discovery 809 * Response frame for a pending request scheduled with 810 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 811 * provision discovery is not used. 812 */ 813 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 814 815 /** 816 * prov_disc_fail - Callback on Provision Discovery failure 817 * @ctx: Callback context from cb_ctx 818 * @peer: Source address of the response 819 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 820 * @adv_id: If non-zero, then the adv_id of the PD Request 821 * @adv_mac: P2P Device Address of the advertizer 822 * @deferred_session_resp: Deferred session response sent by advertizer 823 * 824 * This callback is used to indicate either a failure or no response 825 * to an earlier provision discovery request. 826 * 827 * This callback handler can be set to %NULL if provision discovery 828 * is not used or failures do not need to be indicated. 829 */ 830 void (*prov_disc_fail)(void *ctx, const u8 *peer, 831 enum p2p_prov_disc_status status, 832 u32 adv_id, const u8 *adv_mac, 833 const char *deferred_session_resp); 834 835 /** 836 * invitation_process - Optional callback for processing Invitations 837 * @ctx: Callback context from cb_ctx 838 * @sa: Source address of the Invitation Request 839 * @bssid: P2P Group BSSID from the request or %NULL if not included 840 * @go_dev_addr: GO Device Address from P2P Group ID 841 * @ssid: SSID from P2P Group ID 842 * @ssid_len: Length of ssid buffer in octets 843 * @go: Variable for returning whether the local end is GO in the group 844 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 845 * @force_freq: Variable for returning forced frequency for the group 846 * @persistent_group: Whether this is an invitation to reinvoke a 847 * persistent group (instead of invitation to join an active 848 * group) 849 * @channels: Available operating channels for the group 850 * @dev_pw_id: Device Password ID for NFC static handover or -1 if not 851 * used 852 * Returns: Status code (P2P_SC_*) 853 * 854 * This optional callback can be used to implement persistent reconnect 855 * by allowing automatic restarting of persistent groups without user 856 * interaction. If this callback is not implemented (i.e., is %NULL), 857 * the received Invitation Request frames are replied with 858 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 859 * invitation_result() callback. 860 * 861 * If the requested parameters are acceptable and the group is known, 862 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 863 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 864 * can be returned if there is not enough data to provide immediate 865 * response, i.e., if some sort of user interaction is needed. The 866 * invitation_received() callback will be called in that case 867 * immediately after this call. 868 */ 869 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 870 const u8 *go_dev_addr, const u8 *ssid, 871 size_t ssid_len, int *go, u8 *group_bssid, 872 int *force_freq, int persistent_group, 873 const struct p2p_channels *channels, 874 int dev_pw_id); 875 876 /** 877 * invitation_received - Callback on Invitation Request RX 878 * @ctx: Callback context from cb_ctx 879 * @sa: Source address of the Invitation Request 880 * @bssid: P2P Group BSSID or %NULL if not received 881 * @ssid: SSID of the group 882 * @ssid_len: Length of ssid in octets 883 * @go_dev_addr: GO Device Address 884 * @status: Response Status 885 * @op_freq: Operational frequency for the group 886 * 887 * This callback is used to indicate sending of an Invitation Response 888 * for a received Invitation Request. If status == 0 (success), the 889 * upper layer code is responsible for starting the group. status == 1 890 * indicates need to get user authorization for the group. Other status 891 * values indicate that the invitation request was rejected. 892 */ 893 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 894 const u8 *ssid, size_t ssid_len, 895 const u8 *go_dev_addr, u8 status, 896 int op_freq); 897 898 /** 899 * invitation_result - Callback on Invitation result 900 * @ctx: Callback context from cb_ctx 901 * @status: Negotiation result (Status Code) 902 * @bssid: P2P Group BSSID or %NULL if not received 903 * @channels: Available operating channels for the group 904 * @addr: Peer address 905 * @freq: Frequency (in MHz) indicated during invitation or 0 906 * @peer_oper_freq: Operating frequency (in MHz) advertized by the peer 907 * during invitation or 0 908 * 909 * This callback is used to indicate result of an Invitation procedure 910 * started with a call to p2p_invite(). The indicated status code is 911 * the value received from the peer in Invitation Response with 0 912 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 913 * local failure in transmitting the Invitation Request. 914 */ 915 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 916 const struct p2p_channels *channels, 917 const u8 *addr, int freq, int peer_oper_freq); 918 919 /** 920 * go_connected - Check whether we are connected to a GO 921 * @ctx: Callback context from cb_ctx 922 * @dev_addr: P2P Device Address of a GO 923 * Returns: 1 if we are connected as a P2P client to the specified GO 924 * or 0 if not. 925 */ 926 int (*go_connected)(void *ctx, const u8 *dev_addr); 927 928 /** 929 * presence_resp - Callback on Presence Response 930 * @ctx: Callback context from cb_ctx 931 * @src: Source address (GO's P2P Interface Address) 932 * @status: Result of the request (P2P_SC_*) 933 * @noa: Returned NoA value 934 * @noa_len: Length of the NoA buffer in octets 935 */ 936 void (*presence_resp)(void *ctx, const u8 *src, u8 status, 937 const u8 *noa, size_t noa_len); 938 939 /** 940 * is_concurrent_session_active - Check whether concurrent session is 941 * active on other virtual interfaces 942 * @ctx: Callback context from cb_ctx 943 * Returns: 1 if concurrent session is active on other virtual interface 944 * or 0 if not. 945 */ 946 int (*is_concurrent_session_active)(void *ctx); 947 948 /** 949 * is_p2p_in_progress - Check whether P2P operation is in progress 950 * @ctx: Callback context from cb_ctx 951 * Returns: 1 if P2P operation (e.g., group formation) is in progress 952 * or 0 if not. 953 */ 954 int (*is_p2p_in_progress)(void *ctx); 955 956 /** 957 * Determine if we have a persistent group we share with remote peer 958 * @ctx: Callback context from cb_ctx 959 * @addr: Peer device address to search for 960 * @ssid: Persistent group SSID or %NULL if any 961 * @ssid_len: Length of @ssid 962 * @go_dev_addr: Buffer for returning intended GO P2P Device Address 963 * @ret_ssid: Buffer for returning group SSID 964 * @ret_ssid_len: Buffer for returning length of @ssid 965 * Returns: 1 if a matching persistent group was found, 0 otherwise 966 */ 967 int (*get_persistent_group)(void *ctx, const u8 *addr, const u8 *ssid, 968 size_t ssid_len, u8 *go_dev_addr, 969 u8 *ret_ssid, size_t *ret_ssid_len); 970 971 /** 972 * Get information about a possible local GO role 973 * @ctx: Callback context from cb_ctx 974 * @intended_addr: Buffer for returning intended GO interface address 975 * @ssid: Buffer for returning group SSID 976 * @ssid_len: Buffer for returning length of @ssid 977 * @group_iface: Buffer for returning whether a separate group interface 978 * would be used 979 * Returns: 1 if GO info found, 0 otherwise 980 * 981 * This is used to compose New Group settings (SSID, and intended 982 * address) during P2PS provisioning if results of provisioning *might* 983 * result in our being an autonomous GO. 984 */ 985 int (*get_go_info)(void *ctx, u8 *intended_addr, 986 u8 *ssid, size_t *ssid_len, int *group_iface); 987 988 /** 989 * remove_stale_groups - Remove stale P2PS groups 990 * 991 * Because P2PS stages *potential* GOs, and remote devices can remove 992 * credentials unilaterally, we need to make sure we don't let stale 993 * unusable groups build up. 994 */ 995 int (*remove_stale_groups)(void *ctx, const u8 *peer, const u8 *go, 996 const u8 *ssid, size_t ssid_len); 997 998 /** 999 * p2ps_prov_complete - P2PS provisioning complete 1000 * 1001 * When P2PS provisioning completes (successfully or not) we must 1002 * transmit all of the results to the upper layers. 1003 */ 1004 void (*p2ps_prov_complete)(void *ctx, u8 status, const u8 *dev, 1005 const u8 *adv_mac, const u8 *ses_mac, 1006 const u8 *grp_mac, u32 adv_id, u32 ses_id, 1007 u8 conncap, int passwd_id, 1008 const u8 *persist_ssid, 1009 size_t persist_ssid_size, int response_done, 1010 int prov_start, const char *session_info); 1011 1012 /** 1013 * prov_disc_resp_cb - Callback for indicating completion of PD Response 1014 * @ctx: Callback context from cb_ctx 1015 * Returns: 1 if operation was started, 0 otherwise 1016 * 1017 * This callback can be used to perform any pending actions after 1018 * provisioning. It is mainly used for P2PS pending group creation. 1019 */ 1020 int (*prov_disc_resp_cb)(void *ctx); 1021 1022 /** 1023 * p2ps_group_capability - Determine group capability 1024 * 1025 * This function can be used to determine group capability based on 1026 * information from P2PS PD exchange and the current state of ongoing 1027 * groups and driver capabilities. 1028 * 1029 * P2PS_SETUP_* bitmap is used as the parameters and return value. 1030 */ 1031 u8 (*p2ps_group_capability)(void *ctx, u8 incoming, u8 role); 1032 }; 1033 1034 1035 /* P2P module initialization/deinitialization */ 1036 1037 /** 1038 * p2p_init - Initialize P2P module 1039 * @cfg: P2P module configuration 1040 * Returns: Pointer to private data or %NULL on failure 1041 * 1042 * This function is used to initialize global P2P module context (one per 1043 * device). The P2P module will keep a copy of the configuration data, so the 1044 * caller does not need to maintain this structure. However, the callback 1045 * functions and the context parameters to them must be kept available until 1046 * the P2P module is deinitialized with p2p_deinit(). 1047 */ 1048 struct p2p_data * p2p_init(const struct p2p_config *cfg); 1049 1050 /** 1051 * p2p_deinit - Deinitialize P2P module 1052 * @p2p: P2P module context from p2p_init() 1053 */ 1054 void p2p_deinit(struct p2p_data *p2p); 1055 1056 /** 1057 * p2p_flush - Flush P2P module state 1058 * @p2p: P2P module context from p2p_init() 1059 * 1060 * This command removes the P2P module state like peer device entries. 1061 */ 1062 void p2p_flush(struct p2p_data *p2p); 1063 1064 /** 1065 * p2p_unauthorize - Unauthorize the specified peer device 1066 * @p2p: P2P module context from p2p_init() 1067 * @addr: P2P peer entry to be unauthorized 1068 * Returns: 0 on success, -1 on failure 1069 * 1070 * This command removes any connection authorization from the specified P2P 1071 * peer device address. This can be used, e.g., to cancel effect of a previous 1072 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 1073 * GO Negotiation. 1074 */ 1075 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 1076 1077 /** 1078 * p2p_set_dev_name - Set device name 1079 * @p2p: P2P module context from p2p_init() 1080 * Returns: 0 on success, -1 on failure 1081 * 1082 * This function can be used to update the P2P module configuration with 1083 * information that was not available at the time of the p2p_init() call. 1084 */ 1085 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 1086 1087 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 1088 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 1089 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 1090 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 1091 1092 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 1093 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 1094 1095 /** 1096 * p2p_set_pri_dev_type - Set primary device type 1097 * @p2p: P2P module context from p2p_init() 1098 * Returns: 0 on success, -1 on failure 1099 * 1100 * This function can be used to update the P2P module configuration with 1101 * information that was not available at the time of the p2p_init() call. 1102 */ 1103 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 1104 1105 /** 1106 * p2p_set_sec_dev_types - Set secondary device types 1107 * @p2p: P2P module context from p2p_init() 1108 * Returns: 0 on success, -1 on failure 1109 * 1110 * This function can be used to update the P2P module configuration with 1111 * information that was not available at the time of the p2p_init() call. 1112 */ 1113 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 1114 size_t num_dev_types); 1115 1116 int p2p_set_country(struct p2p_data *p2p, const char *country); 1117 1118 1119 /* Commands from upper layer management entity */ 1120 1121 enum p2p_discovery_type { 1122 P2P_FIND_START_WITH_FULL, 1123 P2P_FIND_ONLY_SOCIAL, 1124 P2P_FIND_PROGRESSIVE 1125 }; 1126 1127 /** 1128 * p2p_find - Start P2P Find (Device Discovery) 1129 * @p2p: P2P module context from p2p_init() 1130 * @timeout: Timeout for find operation in seconds or 0 for no timeout 1131 * @type: Device Discovery type 1132 * @num_req_dev_types: Number of requested device types 1133 * @req_dev_types: Requested device types array, must be an array 1134 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 1135 * requested device types. 1136 * @dev_id: Device ID to search for or %NULL to find all devices 1137 * @search_delay: Extra delay in milliseconds between search iterations 1138 * @seek_count: Number of ASP Service Strings in the seek_string array 1139 * @seek_string: ASP Service Strings to query for in Probe Requests 1140 * @freq: Requested first scan frequency (in MHz) to modify type == 1141 * P2P_FIND_START_WITH_FULL behavior. 0 = Use normal full scan. 1142 * If p2p_find is already in progress, this parameter is ignored and full 1143 * scan will be executed. 1144 * Returns: 0 on success, -1 on failure 1145 */ 1146 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1147 enum p2p_discovery_type type, 1148 unsigned int num_req_dev_types, const u8 *req_dev_types, 1149 const u8 *dev_id, unsigned int search_delay, 1150 u8 seek_count, const char **seek_string, int freq); 1151 1152 /** 1153 * p2p_notify_scan_trigger_status - Indicate scan trigger status 1154 * @p2p: P2P module context from p2p_init() 1155 * @status: 0 on success, -1 on failure 1156 */ 1157 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status); 1158 1159 /** 1160 * p2p_stop_find - Stop P2P Find (Device Discovery) 1161 * @p2p: P2P module context from p2p_init() 1162 */ 1163 void p2p_stop_find(struct p2p_data *p2p); 1164 1165 /** 1166 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 1167 * @p2p: P2P module context from p2p_init() 1168 * @freq: Frequency in MHz for next operation 1169 * 1170 * This is like p2p_stop_find(), but Listen state is not stopped if we are 1171 * already on the same frequency. 1172 */ 1173 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 1174 1175 /** 1176 * p2p_listen - Start P2P Listen state for specified duration 1177 * @p2p: P2P module context from p2p_init() 1178 * @timeout: Listen state duration in milliseconds 1179 * Returns: 0 on success, -1 on failure 1180 * 1181 * This function can be used to request the P2P module to keep the device 1182 * discoverable on the listen channel for an extended set of time. At least in 1183 * its current form, this is mainly used for testing purposes and may not be of 1184 * much use for normal P2P operations. 1185 */ 1186 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 1187 1188 /** 1189 * p2p_stop_listen - Stop P2P Listen 1190 * @p2p: P2P module context from p2p_init() 1191 */ 1192 void p2p_stop_listen(struct p2p_data *p2p); 1193 1194 /** 1195 * p2p_connect - Start P2P group formation (GO negotiation) 1196 * @p2p: P2P module context from p2p_init() 1197 * @peer_addr: MAC address of the peer P2P client 1198 * @wps_method: WPS method to be used in provisioning 1199 * @go_intent: Local GO intent value (1..15) 1200 * @own_interface_addr: Intended interface address to use with the group 1201 * @force_freq: The only allowed channel frequency in MHz or 0 1202 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 1203 * persistent group without persistent reconnect, 2 = persistent group with 1204 * persistent reconnect) 1205 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 1206 * a new SSID 1207 * @force_ssid_len: Length of $force_ssid buffer 1208 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 1209 * Negotiation as an interoperability workaround when initiating group 1210 * formation 1211 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1212 * force_freq == 0) 1213 * Returns: 0 on success, -1 on failure 1214 */ 1215 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1216 enum p2p_wps_method wps_method, 1217 int go_intent, const u8 *own_interface_addr, 1218 unsigned int force_freq, int persistent_group, 1219 const u8 *force_ssid, size_t force_ssid_len, 1220 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id); 1221 1222 /** 1223 * p2p_authorize - Authorize P2P group formation (GO negotiation) 1224 * @p2p: P2P module context from p2p_init() 1225 * @peer_addr: MAC address of the peer P2P client 1226 * @wps_method: WPS method to be used in provisioning 1227 * @go_intent: Local GO intent value (1..15) 1228 * @own_interface_addr: Intended interface address to use with the group 1229 * @force_freq: The only allowed channel frequency in MHz or 0 1230 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 1231 * persistent group without persistent reconnect, 2 = persistent group with 1232 * persistent reconnect) 1233 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 1234 * a new SSID 1235 * @force_ssid_len: Length of $force_ssid buffer 1236 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1237 * force_freq == 0) 1238 * Returns: 0 on success, -1 on failure 1239 * 1240 * This is like p2p_connect(), but the actual group negotiation is not 1241 * initiated automatically, i.e., the other end is expected to do that. 1242 */ 1243 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1244 enum p2p_wps_method wps_method, 1245 int go_intent, const u8 *own_interface_addr, 1246 unsigned int force_freq, int persistent_group, 1247 const u8 *force_ssid, size_t force_ssid_len, 1248 unsigned int pref_freq, u16 oob_pw_id); 1249 1250 /** 1251 * p2p_reject - Reject peer device (explicitly block connection attempts) 1252 * @p2p: P2P module context from p2p_init() 1253 * @peer_addr: MAC address of the peer P2P client 1254 * Returns: 0 on success, -1 on failure 1255 */ 1256 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 1257 1258 /** 1259 * p2p_prov_disc_req - Send Provision Discovery Request 1260 * @p2p: P2P module context from p2p_init() 1261 * @peer_addr: MAC address of the peer P2P client 1262 * @p2ps_prov: Provisioning info for P2PS 1263 * @config_methods: WPS Config Methods value (only one bit set) 1264 * @join: Whether this is used by a client joining an active group 1265 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 1266 * @user_initiated_pd: Flag to indicate if initiated by user or not 1267 * Returns: 0 on success, -1 on failure 1268 * 1269 * This function can be used to request a discovered P2P peer to display a PIN 1270 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 1271 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 1272 * is transmitted once immediately and if no response is received, the frame 1273 * will be sent again whenever the target device is discovered during device 1274 * dsicovery (start with a p2p_find() call). Response from the peer is 1275 * indicated with the p2p_config::prov_disc_resp() callback. 1276 */ 1277 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1278 struct p2ps_provision *p2ps_prov, u16 config_methods, 1279 int join, int force_freq, 1280 int user_initiated_pd); 1281 1282 /** 1283 * p2p_sd_request - Schedule a service discovery query 1284 * @p2p: P2P module context from p2p_init() 1285 * @dst: Destination peer or %NULL to apply for all peers 1286 * @tlvs: P2P Service Query TLV(s) 1287 * Returns: Reference to the query or %NULL on failure 1288 * 1289 * Response to the query is indicated with the p2p_config::sd_response() 1290 * callback. 1291 */ 1292 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1293 const struct wpabuf *tlvs); 1294 1295 #ifdef CONFIG_WIFI_DISPLAY 1296 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1297 const struct wpabuf *tlvs); 1298 #endif /* CONFIG_WIFI_DISPLAY */ 1299 1300 /** 1301 * p2p_sd_cancel_request - Cancel a pending service discovery query 1302 * @p2p: P2P module context from p2p_init() 1303 * @req: Query reference from p2p_sd_request() 1304 * Returns: 0 if request for cancelled; -1 if not found 1305 */ 1306 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1307 1308 /** 1309 * p2p_sd_response - Send response to a service discovery query 1310 * @p2p: P2P module context from p2p_init() 1311 * @freq: Frequency from p2p_config::sd_request() callback 1312 * @dst: Destination address from p2p_config::sd_request() callback 1313 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1314 * @resp_tlvs: P2P Service Response TLV(s) 1315 * 1316 * This function is called as a response to the request indicated with 1317 * p2p_config::sd_request() callback. 1318 */ 1319 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1320 u8 dialog_token, const struct wpabuf *resp_tlvs); 1321 1322 /** 1323 * p2p_sd_service_update - Indicate a change in local services 1324 * @p2p: P2P module context from p2p_init() 1325 * 1326 * This function needs to be called whenever there is a change in availability 1327 * of the local services. This will increment the Service Update Indicator 1328 * value which will be used in SD Request and Response frames. 1329 */ 1330 void p2p_sd_service_update(struct p2p_data *p2p); 1331 1332 1333 enum p2p_invite_role { 1334 P2P_INVITE_ROLE_GO, 1335 P2P_INVITE_ROLE_ACTIVE_GO, 1336 P2P_INVITE_ROLE_CLIENT 1337 }; 1338 1339 /** 1340 * p2p_invite - Invite a P2P Device into a group 1341 * @p2p: P2P module context from p2p_init() 1342 * @peer: Device Address of the peer P2P Device 1343 * @role: Local role in the group 1344 * @bssid: Group BSSID or %NULL if not known 1345 * @ssid: Group SSID 1346 * @ssid_len: Length of ssid in octets 1347 * @force_freq: The only allowed channel frequency in MHz or 0 1348 * @go_dev_addr: Forced GO Device Address or %NULL if none 1349 * @persistent_group: Whether this is to reinvoke a persistent group 1350 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1351 * force_freq == 0) 1352 * @dev_pw_id: Device Password ID from OOB Device Password (NFC) static handover 1353 * case or -1 if not used 1354 * Returns: 0 on success, -1 on failure 1355 */ 1356 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1357 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1358 unsigned int force_freq, const u8 *go_dev_addr, 1359 int persistent_group, unsigned int pref_freq, int dev_pw_id); 1360 1361 /** 1362 * p2p_presence_req - Request GO presence 1363 * @p2p: P2P module context from p2p_init() 1364 * @go_interface_addr: GO P2P Interface Address 1365 * @own_interface_addr: Own P2P Interface Address for this group 1366 * @freq: Group operating frequence (in MHz) 1367 * @duration1: Preferred presence duration in microseconds 1368 * @interval1: Preferred presence interval in microseconds 1369 * @duration2: Acceptable presence duration in microseconds 1370 * @interval2: Acceptable presence interval in microseconds 1371 * Returns: 0 on success, -1 on failure 1372 * 1373 * If both duration and interval values are zero, the parameter pair is not 1374 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1375 */ 1376 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1377 const u8 *own_interface_addr, unsigned int freq, 1378 u32 duration1, u32 interval1, u32 duration2, 1379 u32 interval2); 1380 1381 /** 1382 * p2p_ext_listen - Set Extended Listen Timing 1383 * @p2p: P2P module context from p2p_init() 1384 * @freq: Group operating frequence (in MHz) 1385 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1386 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1387 * Returns: 0 on success, -1 on failure 1388 * 1389 * This function can be used to enable or disable (period = interval = 0) 1390 * Extended Listen Timing. When enabled, the P2P Device will become 1391 * discoverable (go into Listen State) every @interval milliseconds for at 1392 * least @period milliseconds. 1393 */ 1394 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1395 unsigned int interval); 1396 1397 /* Event notifications from upper layer management operations */ 1398 1399 /** 1400 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1401 * @p2p: P2P module context from p2p_init() 1402 * @mac_addr: Peer address 1403 * 1404 * This function is used to report successfully completed WPS provisioning 1405 * during group formation in both GO/Registrar and client/Enrollee roles. 1406 */ 1407 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1408 1409 /** 1410 * p2p_group_formation_failed - Report failed WPS provisioning 1411 * @p2p: P2P module context from p2p_init() 1412 * 1413 * This function is used to report failed group formation. This can happen 1414 * either due to failed WPS provisioning or due to 15 second timeout during 1415 * the provisioning phase. 1416 */ 1417 void p2p_group_formation_failed(struct p2p_data *p2p); 1418 1419 /** 1420 * p2p_get_provisioning_info - Get any stored provisioning info 1421 * @p2p: P2P module context from p2p_init() 1422 * @addr: Peer P2P Device Address 1423 * Returns: WPS provisioning information (WPS config method) or 0 if no 1424 * information is available 1425 * 1426 * This function is used to retrieve stored WPS provisioning info for the given 1427 * peer. 1428 */ 1429 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1430 1431 /** 1432 * p2p_clear_provisioning_info - Clear any stored provisioning info 1433 * @p2p: P2P module context from p2p_init() 1434 * @iface_addr: Peer P2P Device Address 1435 * 1436 * This function is used to clear stored WPS provisioning info for the given 1437 * peer. 1438 */ 1439 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1440 1441 1442 /* Event notifications from lower layer driver operations */ 1443 1444 /** 1445 * enum p2p_probe_req_status 1446 * 1447 * @P2P_PREQ_MALFORMED: frame was not well-formed 1448 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1449 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1450 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1451 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1452 */ 1453 enum p2p_probe_req_status { 1454 P2P_PREQ_MALFORMED, 1455 P2P_PREQ_NOT_LISTEN, 1456 P2P_PREQ_NOT_P2P, 1457 P2P_PREQ_NOT_PROCESSED, 1458 P2P_PREQ_PROCESSED 1459 }; 1460 1461 /** 1462 * p2p_probe_req_rx - Report reception of a Probe Request frame 1463 * @p2p: P2P module context from p2p_init() 1464 * @addr: Source MAC address 1465 * @dst: Destination MAC address if available or %NULL 1466 * @bssid: BSSID if available or %NULL 1467 * @ie: Information elements from the Probe Request frame body 1468 * @ie_len: Length of ie buffer in octets 1469 * @rx_freq: Probe Request frame RX frequency 1470 * Returns: value indicating the type and status of the probe request 1471 */ 1472 enum p2p_probe_req_status 1473 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1474 const u8 *bssid, const u8 *ie, size_t ie_len, 1475 unsigned int rx_freq); 1476 1477 /** 1478 * p2p_rx_action - Report received Action frame 1479 * @p2p: P2P module context from p2p_init() 1480 * @da: Destination address of the received Action frame 1481 * @sa: Source address of the received Action frame 1482 * @bssid: Address 3 of the received Action frame 1483 * @category: Category of the received Action frame 1484 * @data: Action frame body after the Category field 1485 * @len: Length of the data buffer in octets 1486 * @freq: Frequency (in MHz) on which the frame was received 1487 */ 1488 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1489 const u8 *bssid, u8 category, 1490 const u8 *data, size_t len, int freq); 1491 1492 /** 1493 * p2p_scan_res_handler - Indicate a P2P scan results 1494 * @p2p: P2P module context from p2p_init() 1495 * @bssid: BSSID of the scan result 1496 * @freq: Frequency of the channel on which the device was found in MHz 1497 * @rx_time: Time when the result was received 1498 * @level: Signal level (signal strength of the received Beacon/Probe Response 1499 * frame) 1500 * @ies: Pointer to IEs from the scan result 1501 * @ies_len: Length of the ies buffer 1502 * Returns: 0 to continue or 1 to stop scan result indication 1503 * 1504 * This function is called to indicate a scan result entry with P2P IE from a 1505 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1506 * the actual scan process (i.e., whenever a new device is found) or as a 1507 * sequence of calls after the full scan has been completed. The former option 1508 * can result in optimized operations, but may not be supported by all 1509 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1510 * but it is recommended to include all IEs received from the device. The 1511 * caller does not need to check that the IEs contain a P2P IE before calling 1512 * this function since frames will be filtered internally if needed. 1513 * 1514 * This function will return 1 if it wants to stop scan result iteration (and 1515 * scan in general if it is still in progress). This is used to allow faster 1516 * start of a pending operation, e.g., to start a pending GO negotiation. 1517 */ 1518 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1519 struct os_reltime *rx_time, int level, const u8 *ies, 1520 size_t ies_len); 1521 1522 /** 1523 * p2p_scan_res_handled - Indicate end of scan results 1524 * @p2p: P2P module context from p2p_init() 1525 * 1526 * This function is called to indicate that all P2P scan results from a scan 1527 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1528 * function must be called as a response to successful 1529 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1530 * calls stopped iteration. 1531 */ 1532 void p2p_scan_res_handled(struct p2p_data *p2p); 1533 1534 enum p2p_send_action_result { 1535 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1536 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1537 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1538 }; 1539 1540 /** 1541 * p2p_send_action_cb - Notify TX status of an Action frame 1542 * @p2p: P2P module context from p2p_init() 1543 * @freq: Channel frequency in MHz 1544 * @dst: Destination MAC address (Address 1) 1545 * @src: Source MAC address (Address 2) 1546 * @bssid: BSSID (Address 3) 1547 * @result: Result of the transmission attempt 1548 * 1549 * This function is used to indicate the result of an Action frame transmission 1550 * that was requested with struct p2p_config::send_action() callback. 1551 */ 1552 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1553 const u8 *src, const u8 *bssid, 1554 enum p2p_send_action_result result); 1555 1556 /** 1557 * p2p_listen_cb - Indicate the start of a requested Listen state 1558 * @p2p: P2P module context from p2p_init() 1559 * @freq: Listen channel frequency in MHz 1560 * @duration: Duration for the Listen state in milliseconds 1561 * 1562 * This function is used to indicate that a Listen state requested with 1563 * struct p2p_config::start_listen() callback has started. 1564 */ 1565 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1566 unsigned int duration); 1567 1568 /** 1569 * p2p_listen_end - Indicate the end of a requested Listen state 1570 * @p2p: P2P module context from p2p_init() 1571 * @freq: Listen channel frequency in MHz 1572 * Returns: 0 if no operations were started, 1 if an operation was started 1573 * 1574 * This function is used to indicate that a Listen state requested with 1575 * struct p2p_config::start_listen() callback has ended. 1576 */ 1577 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1578 1579 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1580 const u8 *ie, size_t ie_len); 1581 1582 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1583 const u8 *ie, size_t ie_len); 1584 1585 1586 /* Per-group P2P state for GO */ 1587 1588 struct p2p_group; 1589 1590 /** 1591 * struct p2p_group_config - P2P group configuration 1592 * 1593 * This configuration is provided to the P2P module during initialization of 1594 * the per-group information with p2p_group_init(). 1595 */ 1596 struct p2p_group_config { 1597 /** 1598 * persistent_group - Whether the group is persistent 1599 * 0 = not a persistent group 1600 * 1 = persistent group without persistent reconnect 1601 * 2 = persistent group with persistent reconnect 1602 */ 1603 int persistent_group; 1604 1605 /** 1606 * interface_addr - P2P Interface Address of the group 1607 */ 1608 u8 interface_addr[ETH_ALEN]; 1609 1610 /** 1611 * max_clients - Maximum number of clients in the group 1612 */ 1613 unsigned int max_clients; 1614 1615 /** 1616 * ssid - Group SSID 1617 */ 1618 u8 ssid[SSID_MAX_LEN]; 1619 1620 /** 1621 * ssid_len - Length of SSID 1622 */ 1623 size_t ssid_len; 1624 1625 /** 1626 * freq - Operating channel of the group 1627 */ 1628 int freq; 1629 1630 /** 1631 * cb_ctx - Context to use with callback functions 1632 */ 1633 void *cb_ctx; 1634 1635 /** 1636 * ie_update - Notification of IE update 1637 * @ctx: Callback context from cb_ctx 1638 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1639 * @proberesp_ies: P2P Ie for Probe Response frames 1640 * 1641 * P2P module uses this callback function to notify whenever the P2P IE 1642 * in Beacon or Probe Response frames should be updated based on group 1643 * events. 1644 * 1645 * The callee is responsible for freeing the returned buffer(s) with 1646 * wpabuf_free(). 1647 */ 1648 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1649 struct wpabuf *proberesp_ies); 1650 1651 /** 1652 * idle_update - Notification of changes in group idle state 1653 * @ctx: Callback context from cb_ctx 1654 * @idle: Whether the group is idle (no associated stations) 1655 */ 1656 void (*idle_update)(void *ctx, int idle); 1657 }; 1658 1659 /** 1660 * p2p_group_init - Initialize P2P group 1661 * @p2p: P2P module context from p2p_init() 1662 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1663 * Returns: Pointer to private data or %NULL on failure 1664 * 1665 * This function is used to initialize per-group P2P module context. Currently, 1666 * this is only used to manage GO functionality and P2P clients do not need to 1667 * create an instance of this per-group information. 1668 */ 1669 struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1670 struct p2p_group_config *config); 1671 1672 /** 1673 * p2p_group_deinit - Deinitialize P2P group 1674 * @group: P2P group context from p2p_group_init() 1675 */ 1676 void p2p_group_deinit(struct p2p_group *group); 1677 1678 /** 1679 * p2p_group_notif_assoc - Notification of P2P client association with GO 1680 * @group: P2P group context from p2p_group_init() 1681 * @addr: Interface address of the P2P client 1682 * @ie: IEs from the (Re)association Request frame 1683 * @len: Length of the ie buffer in octets 1684 * Returns: 0 on success, -1 on failure 1685 */ 1686 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1687 const u8 *ie, size_t len); 1688 1689 /** 1690 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1691 * @group: P2P group context from p2p_group_init() 1692 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1693 * Returns: P2P IE for (Re)association Response or %NULL on failure 1694 * 1695 * The caller is responsible for freeing the returned buffer with 1696 * wpabuf_free(). 1697 */ 1698 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1699 1700 /** 1701 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1702 * @group: P2P group context from p2p_group_init() 1703 * @addr: Interface address of the P2P client 1704 */ 1705 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1706 1707 /** 1708 * p2p_group_notif_formation_done - Notification of completed group formation 1709 * @group: P2P group context from p2p_group_init() 1710 */ 1711 void p2p_group_notif_formation_done(struct p2p_group *group); 1712 1713 /** 1714 * p2p_group_notif_noa - Notification of NoA change 1715 * @group: P2P group context from p2p_group_init() 1716 * @noa: Notice of Absence attribute payload, %NULL if none 1717 * @noa_len: Length of noa buffer in octets 1718 * Returns: 0 on success, -1 on failure 1719 * 1720 * Notify the P2P group management about a new NoA contents. This will be 1721 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1722 * the group information. 1723 */ 1724 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1725 size_t noa_len); 1726 1727 /** 1728 * p2p_group_match_dev_type - Match device types in group with requested type 1729 * @group: P2P group context from p2p_group_init() 1730 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1731 * Returns: 1 on match, 0 on mismatch 1732 * 1733 * This function can be used to match the Requested Device Type attribute in 1734 * WPS IE with the device types of a group member for deciding whether a GO 1735 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1736 * is not requested any specific device type. 1737 */ 1738 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1739 1740 /** 1741 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1742 */ 1743 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1744 1745 /** 1746 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1747 * @group: P2P group context from p2p_group_init() 1748 * Returns: 0 on success (frame scheduled); -1 if client was not found 1749 */ 1750 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1751 const u8 *searching_dev, int rx_freq); 1752 1753 1754 /* Generic helper functions */ 1755 1756 /** 1757 * p2p_ie_text - Build text format description of P2P IE 1758 * @p2p_ie: P2P IE 1759 * @buf: Buffer for returning text 1760 * @end: Pointer to the end of the buf area 1761 * Returns: Number of octets written to the buffer or -1 on failure 1762 * 1763 * This function can be used to parse P2P IE contents into text format 1764 * field=value lines. 1765 */ 1766 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1767 1768 /** 1769 * p2p_scan_result_text - Build text format description of P2P IE 1770 * @ies: Information elements from scan results 1771 * @ies_len: ies buffer length in octets 1772 * @buf: Buffer for returning text 1773 * @end: Pointer to the end of the buf area 1774 * Returns: Number of octets written to the buffer or -1 on failure 1775 * 1776 * This function can be used to parse P2P IE contents into text format 1777 * field=value lines. 1778 */ 1779 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1780 1781 /** 1782 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1783 * P2P IE 1784 * @p2p_ie: P2P IE 1785 * @dev_addr: Buffer for returning P2P Device Address 1786 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1787 */ 1788 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1789 1790 /** 1791 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1792 * @ies: Information elements from scan results 1793 * @ies_len: ies buffer length in octets 1794 * @dev_addr: Buffer for returning P2P Device Address 1795 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1796 */ 1797 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1798 1799 /** 1800 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1801 * @p2p: P2P module context from p2p_init() 1802 * @bssid: BSSID 1803 * @buf: Buffer for writing the P2P IE 1804 * @len: Maximum buf length in octets 1805 * @p2p_group: Whether this is for association with a P2P GO 1806 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1807 * Returns: Number of octets written into buf or -1 on failure 1808 */ 1809 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1810 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1811 1812 /** 1813 * p2p_scan_ie - Build P2P IE for Probe Request 1814 * @p2p: P2P module context from p2p_init() 1815 * @ies: Buffer for writing P2P IE 1816 * @dev_id: Device ID to search for or %NULL for any 1817 */ 1818 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1819 1820 /** 1821 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1822 * @p2p: P2P module context from p2p_init() 1823 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1824 */ 1825 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1826 1827 /** 1828 * p2p_go_params - Generate random P2P group parameters 1829 * @p2p: P2P module context from p2p_init() 1830 * @params: Buffer for parameters 1831 * Returns: 0 on success, -1 on failure 1832 */ 1833 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1834 1835 /** 1836 * p2p_get_group_capab - Get Group Capability from P2P IE data 1837 * @p2p_ie: P2P IE(s) contents 1838 * Returns: Group Capability 1839 */ 1840 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1841 1842 /** 1843 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1844 * @p2p_ie: P2P IE(s) contents 1845 * Returns: 0 if cross connection is allow, 1 if not 1846 */ 1847 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1848 1849 /** 1850 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1851 * @p2p_ie: P2P IE(s) contents 1852 * Returns: Pointer to P2P Device Address or %NULL if not included 1853 */ 1854 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1855 1856 /** 1857 * p2p_get_peer_info - Get P2P peer information 1858 * @p2p: P2P module context from p2p_init() 1859 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1860 * @next: Whether to select the peer entry following the one indicated by addr 1861 * Returns: Pointer to peer info or %NULL if not found 1862 */ 1863 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1864 const u8 *addr, int next); 1865 1866 /** 1867 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1868 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1869 * @buf: Buffer for returning text 1870 * @buflen: Maximum buffer length 1871 * Returns: Number of octets written to the buffer or -1 on failure 1872 * 1873 * Note: This information is internal to the P2P module and subject to change. 1874 * As such, this should not really be used by external programs for purposes 1875 * other than debugging. 1876 */ 1877 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1878 char *buf, size_t buflen); 1879 1880 /** 1881 * p2p_peer_known - Check whether P2P peer is known 1882 * @p2p: P2P module context from p2p_init() 1883 * @addr: P2P Device Address of the peer 1884 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1885 */ 1886 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1887 1888 /** 1889 * p2p_set_client_discoverability - Set client discoverability capability 1890 * @p2p: P2P module context from p2p_init() 1891 * @enabled: Whether client discoverability will be enabled 1892 * 1893 * This function can be used to disable (and re-enable) client discoverability. 1894 * This capability is enabled by default and should not be disabled in normal 1895 * use cases, i.e., this is mainly for testing purposes. 1896 */ 1897 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1898 1899 /** 1900 * p2p_set_managed_oper - Set managed P2P Device operations capability 1901 * @p2p: P2P module context from p2p_init() 1902 * @enabled: Whether managed P2P Device operations will be enabled 1903 */ 1904 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1905 1906 /** 1907 * p2p_config_get_random_social - Return a random social channel 1908 * @p2p: P2P config 1909 * @op_class: Selected operating class 1910 * @op_channel: Selected social channel 1911 * Returns: 0 on success, -1 on failure 1912 * 1913 * This function is used before p2p_init is called. A random social channel 1914 * from supports bands 2.4 GHz (channels 1,6,11) and 60 GHz (channel 2) is 1915 * returned on success. 1916 */ 1917 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class, 1918 u8 *op_channel); 1919 1920 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel, 1921 u8 forced); 1922 1923 u8 p2p_get_listen_channel(struct p2p_data *p2p); 1924 1925 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1926 1927 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1928 u8 *iface_addr); 1929 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1930 u8 *dev_addr); 1931 1932 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1933 1934 /** 1935 * p2p_set_cross_connect - Set cross connection capability 1936 * @p2p: P2P module context from p2p_init() 1937 * @enabled: Whether cross connection will be enabled 1938 */ 1939 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1940 1941 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1942 1943 /** 1944 * p2p_set_intra_bss_dist - Set intra BSS distribution 1945 * @p2p: P2P module context from p2p_init() 1946 * @enabled: Whether intra BSS distribution will be enabled 1947 */ 1948 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1949 1950 int p2p_channels_includes_freq(const struct p2p_channels *channels, 1951 unsigned int freq); 1952 1953 int p2p_channels_to_freqs(const struct p2p_channels *channels, 1954 int *freq_list, unsigned int max_len); 1955 1956 /** 1957 * p2p_supported_freq - Check whether channel is supported for P2P 1958 * @p2p: P2P module context from p2p_init() 1959 * @freq: Channel frequency in MHz 1960 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1961 */ 1962 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1963 1964 /** 1965 * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation 1966 * @p2p: P2P module context from p2p_init() 1967 * @freq: Channel frequency in MHz 1968 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1969 */ 1970 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq); 1971 1972 /** 1973 * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation 1974 * @p2p: P2P module context from p2p_init() 1975 * @freq: Channel frequency in MHz 1976 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1977 */ 1978 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq); 1979 1980 /** 1981 * p2p_get_pref_freq - Get channel from preferred channel list 1982 * @p2p: P2P module context from p2p_init() 1983 * @channels: List of channels 1984 * Returns: Preferred channel 1985 */ 1986 unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 1987 const struct p2p_channels *channels); 1988 1989 void p2p_update_channel_list(struct p2p_data *p2p, 1990 const struct p2p_channels *chan, 1991 const struct p2p_channels *cli_chan); 1992 1993 /** 1994 * p2p_set_best_channels - Update best channel information 1995 * @p2p: P2P module context from p2p_init() 1996 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1997 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1998 * @freq_overall: Frequency (MHz) of best channel overall 1999 */ 2000 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 2001 int freq_overall); 2002 2003 /** 2004 * p2p_set_own_freq_preference - Set own preference for channel 2005 * @p2p: P2P module context from p2p_init() 2006 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 2007 * 2008 * This function can be used to set a preference on the operating channel based 2009 * on frequencies used on the other virtual interfaces that share the same 2010 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 2011 */ 2012 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 2013 2014 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 2015 2016 /** 2017 * p2p_get_group_num_members - Get number of members in group 2018 * @group: P2P group context from p2p_group_init() 2019 * Returns: Number of members in the group 2020 */ 2021 unsigned int p2p_get_group_num_members(struct p2p_group *group); 2022 2023 /** 2024 * p2p_client_limit_reached - Check if client limit is reached 2025 * @group: P2P group context from p2p_group_init() 2026 * Returns: 1 if no of clients limit reached 2027 */ 2028 int p2p_client_limit_reached(struct p2p_group *group); 2029 2030 /** 2031 * p2p_iterate_group_members - Iterate group members 2032 * @group: P2P group context from p2p_group_init() 2033 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 2034 * on the first call and not modified later 2035 * Returns: A P2P Device Address for each call and %NULL for no more members 2036 */ 2037 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 2038 2039 /** 2040 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 2041 * @group: P2P group context from p2p_group_init() 2042 * @addr: P2P Interface Address of the client 2043 * Returns: P2P Device Address of the client if found or %NULL if no match 2044 * found 2045 */ 2046 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 2047 2048 /** 2049 * p2p_group_is_client_connected - Check whether a specific client is connected 2050 * @group: P2P group context from p2p_group_init() 2051 * @addr: P2P Device Address of the client 2052 * Returns: 1 if client is connected or 0 if not 2053 */ 2054 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 2055 2056 /** 2057 * p2p_group_get_config - Get the group configuration 2058 * @group: P2P group context from p2p_group_init() 2059 * Returns: The group configuration pointer 2060 */ 2061 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group); 2062 2063 /** 2064 * p2p_loop_on_all_groups - Run the given callback on all groups 2065 * @p2p: P2P module context from p2p_init() 2066 * @group_callback: The callback function pointer 2067 * @user_data: Some user data pointer which can be %NULL 2068 * 2069 * The group_callback function can stop the iteration by returning 0. 2070 */ 2071 void p2p_loop_on_all_groups(struct p2p_data *p2p, 2072 int (*group_callback)(struct p2p_group *group, 2073 void *user_data), 2074 void *user_data); 2075 2076 /** 2077 * p2p_get_peer_found - Get P2P peer info structure of a found peer 2078 * @p2p: P2P module context from p2p_init() 2079 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 2080 * @next: Whether to select the peer entry following the one indicated by addr 2081 * Returns: The first P2P peer info available or %NULL if no such peer exists 2082 */ 2083 const struct p2p_peer_info * 2084 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 2085 2086 /** 2087 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 2088 * @p2p: P2P module context from p2p_init() 2089 */ 2090 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 2091 2092 /** 2093 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 2094 * @p2p: P2P module context from p2p_init() 2095 * @vendor_ext: The vendor extensions to add 2096 * Returns: 0 on success, -1 on failure 2097 * 2098 * The wpabuf structures in the array are owned by the P2P 2099 * module after this call. 2100 */ 2101 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2102 const struct wpabuf *vendor_ext); 2103 2104 /** 2105 * p2p_set_oper_channel - Set the P2P operating channel 2106 * @p2p: P2P module context from p2p_init() 2107 * @op_reg_class: Operating regulatory class to set 2108 * @op_channel: operating channel to set 2109 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 2110 * Returns: 0 on success, -1 on failure 2111 */ 2112 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 2113 int cfg_op_channel); 2114 2115 /** 2116 * p2p_set_pref_chan - Set P2P preferred channel list 2117 * @p2p: P2P module context from p2p_init() 2118 * @num_pref_chan: Number of entries in pref_chan list 2119 * @pref_chan: Preferred channels or %NULL to remove preferences 2120 * Returns: 0 on success, -1 on failure 2121 */ 2122 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 2123 const struct p2p_channel *pref_chan); 2124 2125 /** 2126 * p2p_set_no_go_freq - Set no GO channel ranges 2127 * @p2p: P2P module context from p2p_init() 2128 * @list: Channel ranges or %NULL to remove restriction 2129 * Returns: 0 on success, -1 on failure 2130 */ 2131 int p2p_set_no_go_freq(struct p2p_data *p2p, 2132 const struct wpa_freq_range_list *list); 2133 2134 /** 2135 * p2p_in_progress - Check whether a P2P operation is progress 2136 * @p2p: P2P module context from p2p_init() 2137 * Returns: 0 if P2P module is idle, 1 if an operation is in progress but not 2138 * in search state, or 2 if search state operation is in progress 2139 */ 2140 int p2p_in_progress(struct p2p_data *p2p); 2141 2142 const char * p2p_wps_method_text(enum p2p_wps_method method); 2143 2144 /** 2145 * p2p_set_config_timeout - Set local config timeouts 2146 * @p2p: P2P module context from p2p_init() 2147 * @go_timeout: Time in 10 ms units it takes to start the GO mode 2148 * @client_timeout: Time in 10 ms units it takes to start the client mode 2149 */ 2150 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 2151 u8 client_timeout); 2152 2153 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 2154 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 2155 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 2156 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 2157 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 2158 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 2159 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 2160 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 2161 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 2162 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 2163 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 2164 const struct wpabuf *elem); 2165 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 2166 2167 /** 2168 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 2169 * @p2p: P2P module context from p2p_init() 2170 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 2171 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 2172 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 2173 * -1 not to limit 2174 * Returns: 0 on success, or -1 on failure 2175 * 2176 * This function can be used to configure minDiscoverableInterval and 2177 * maxDiscoverableInterval parameters for the Listen state during device 2178 * discovery (p2p_find). A random number of 100 TU units is picked for each 2179 * Listen state iteration from [min_disc_int,max_disc_int] range. 2180 * 2181 * max_disc_tu can be used to futher limit the discoverable duration. However, 2182 * it should be noted that use of this parameter is not recommended since it 2183 * would not be compliant with the P2P specification. 2184 */ 2185 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 2186 int max_disc_tu); 2187 2188 /** 2189 * p2p_get_state_txt - Get current P2P state for debug purposes 2190 * @p2p: P2P module context from p2p_init() 2191 * Returns: Name of the current P2P module state 2192 * 2193 * It should be noted that the P2P module state names are internal information 2194 * and subject to change at any point, i.e., this information should be used 2195 * mainly for debugging purposes. 2196 */ 2197 const char * p2p_get_state_txt(struct p2p_data *p2p); 2198 2199 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p, 2200 int client_freq, 2201 const u8 *go_dev_addr, 2202 const u8 *ssid, size_t ssid_len); 2203 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p, 2204 int client_freq, 2205 const u8 *go_dev_addr, 2206 const u8 *ssid, size_t ssid_len); 2207 2208 struct p2p_nfc_params { 2209 int sel; 2210 const u8 *wsc_attr; 2211 size_t wsc_len; 2212 const u8 *p2p_attr; 2213 size_t p2p_len; 2214 2215 enum { 2216 NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG, 2217 BOTH_GO, PEER_CLIENT 2218 } next_step; 2219 struct p2p_peer_info *peer; 2220 u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 + 2221 WPS_OOB_DEVICE_PASSWORD_LEN]; 2222 size_t oob_dev_pw_len; 2223 int go_freq; 2224 u8 go_dev_addr[ETH_ALEN]; 2225 u8 go_ssid[SSID_MAX_LEN]; 2226 size_t go_ssid_len; 2227 }; 2228 2229 int p2p_process_nfc_connection_handover(struct p2p_data *p2p, 2230 struct p2p_nfc_params *params); 2231 2232 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id, 2233 int go_intent, 2234 const u8 *own_interface_addr); 2235 2236 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len); 2237 2238 void p2p_loop_on_known_peers(struct p2p_data *p2p, 2239 void (*peer_callback)(struct p2p_peer_info *peer, 2240 void *user_data), 2241 void *user_data); 2242 2243 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem); 2244 2245 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr); 2246 2247 struct p2ps_advertisement * 2248 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id); 2249 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id, 2250 const char *adv_str, u8 svc_state, 2251 u16 config_methods, const char *svc_info); 2252 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id); 2253 void p2p_service_flush_asp(struct p2p_data *p2p); 2254 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p); 2255 2256 #endif /* P2P_H */ 2257