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 #define P2PS_FEATURE_CAPAB_CPT_MAX 2 25 26 /** 27 * P2P_MAX_PREF_CHANNELS - Maximum number of preferred channels 28 */ 29 #define P2P_MAX_PREF_CHANNELS 100 30 31 /** 32 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 33 */ 34 #define P2P_MAX_REG_CLASSES 15 35 36 /** 37 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 38 */ 39 #define P2P_MAX_REG_CLASS_CHANNELS 60 40 41 /** 42 * struct p2p_channels - List of supported channels 43 */ 44 struct p2p_channels { 45 /** 46 * struct p2p_reg_class - Supported regulatory class 47 */ 48 struct p2p_reg_class { 49 /** 50 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 51 */ 52 u8 reg_class; 53 54 /** 55 * channel - Supported channels 56 */ 57 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 58 59 /** 60 * channels - Number of channel entries in use 61 */ 62 size_t channels; 63 } reg_class[P2P_MAX_REG_CLASSES]; 64 65 /** 66 * reg_classes - Number of reg_class entries in use 67 */ 68 size_t reg_classes; 69 }; 70 71 enum p2p_wps_method { 72 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC, WPS_NFC, 73 WPS_P2PS 74 }; 75 76 /** 77 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 78 */ 79 struct p2p_go_neg_results { 80 /** 81 * status - Negotiation result (Status Code) 82 * 83 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 84 * failed negotiation. 85 */ 86 int status; 87 88 /** 89 * role_go - Whether local end is Group Owner 90 */ 91 int role_go; 92 93 /** 94 * freq - Frequency of the group operational channel in MHz 95 */ 96 int freq; 97 98 int ht40; 99 100 int vht; 101 102 int edmg; 103 104 u8 max_oper_chwidth; 105 106 unsigned int vht_center_freq2; 107 108 /** 109 * he - Indicates if IEEE 802.11ax HE is enabled 110 */ 111 int he; 112 113 /** 114 * ssid - SSID of the group 115 */ 116 u8 ssid[SSID_MAX_LEN]; 117 118 /** 119 * ssid_len - Length of SSID in octets 120 */ 121 size_t ssid_len; 122 123 /** 124 * psk - WPA pre-shared key (256 bits) (GO only) 125 */ 126 u8 psk[32]; 127 128 /** 129 * psk_set - Whether PSK field is configured (GO only) 130 */ 131 int psk_set; 132 133 /** 134 * passphrase - WPA2-Personal passphrase for the group (GO only) 135 */ 136 char passphrase[64]; 137 138 /** 139 * peer_device_addr - P2P Device Address of the peer 140 */ 141 u8 peer_device_addr[ETH_ALEN]; 142 143 /** 144 * peer_interface_addr - P2P Interface Address of the peer 145 */ 146 u8 peer_interface_addr[ETH_ALEN]; 147 148 /** 149 * wps_method - WPS method to be used during provisioning 150 */ 151 enum p2p_wps_method wps_method; 152 153 #define P2P_MAX_CHANNELS 50 154 155 /** 156 * freq_list - Zero-terminated list of possible operational channels 157 */ 158 int freq_list[P2P_MAX_CHANNELS]; 159 160 /** 161 * persistent_group - Whether the group should be made persistent 162 * 0 = not persistent 163 * 1 = persistent group without persistent reconnect 164 * 2 = persistent group with persistent reconnect 165 */ 166 int persistent_group; 167 168 /** 169 * peer_config_timeout - Peer configuration timeout (in 10 msec units) 170 */ 171 unsigned int peer_config_timeout; 172 }; 173 174 struct p2ps_provision { 175 /** 176 * pd_seeker - P2PS provision discovery seeker role 177 */ 178 unsigned int pd_seeker:1; 179 180 /** 181 * status - Remote returned provisioning status code 182 */ 183 int status; 184 185 /** 186 * adv_id - P2PS Advertisement ID 187 */ 188 u32 adv_id; 189 190 /** 191 * session_id - P2PS Session ID 192 */ 193 u32 session_id; 194 195 /** 196 * method - WPS Method (to be) used to establish session 197 */ 198 u16 method; 199 200 /** 201 * conncap - Connection Capabilities negotiated between P2P peers 202 */ 203 u8 conncap; 204 205 /** 206 * role - Info about the roles to be used for this connection 207 */ 208 u8 role; 209 210 /** 211 * session_mac - MAC address of the peer that started the session 212 */ 213 u8 session_mac[ETH_ALEN]; 214 215 /** 216 * adv_mac - MAC address of the peer advertised the service 217 */ 218 u8 adv_mac[ETH_ALEN]; 219 220 /** 221 * cpt_mask - Supported Coordination Protocol Transport mask 222 * 223 * A bitwise mask of supported ASP Coordination Protocol Transports. 224 * This property is set together and corresponds with cpt_priority. 225 */ 226 u8 cpt_mask; 227 228 /** 229 * cpt_priority - Coordination Protocol Transport priority list 230 * 231 * Priorities of supported ASP Coordination Protocol Transports. 232 * This property is set together and corresponds with cpt_mask. 233 * The CPT priority list is 0 terminated. 234 */ 235 u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1]; 236 237 /** 238 * force_freq - The only allowed channel frequency in MHz or 0. 239 */ 240 unsigned int force_freq; 241 242 /** 243 * pref_freq - Preferred operating frequency in MHz or 0. 244 */ 245 unsigned int pref_freq; 246 247 /** 248 * info - Vendor defined extra Provisioning information 249 */ 250 char info[0]; 251 }; 252 253 struct p2ps_advertisement { 254 struct p2ps_advertisement *next; 255 256 /** 257 * svc_info - Pointer to (internal) Service defined information 258 */ 259 char *svc_info; 260 261 /** 262 * id - P2PS Advertisement ID 263 */ 264 u32 id; 265 266 /** 267 * config_methods - WPS Methods which are allowed for this service 268 */ 269 u16 config_methods; 270 271 /** 272 * state - Current state of the service: 0 - Out Of Service, 1-255 Vendor defined 273 */ 274 u8 state; 275 276 /** 277 * auto_accept - Automatically Accept provisioning request if possible. 278 */ 279 u8 auto_accept; 280 281 /** 282 * hash - 6 octet Service Name has to match against incoming Probe Requests 283 */ 284 u8 hash[P2PS_HASH_LEN]; 285 286 /** 287 * cpt_mask - supported Coordination Protocol Transport mask 288 * 289 * A bitwise mask of supported ASP Coordination Protocol Transports. 290 * This property is set together and corresponds with cpt_priority. 291 */ 292 u8 cpt_mask; 293 294 /** 295 * cpt_priority - Coordination Protocol Transport priority list 296 * 297 * Priorities of supported ASP Coordinatin Protocol Transports. 298 * This property is set together and corresponds with cpt_mask. 299 * The CPT priority list is 0 terminated. 300 */ 301 u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1]; 302 303 /** 304 * svc_name - NULL Terminated UTF-8 Service Name, and svc_info storage 305 */ 306 char svc_name[0]; 307 }; 308 309 310 struct p2p_data; 311 312 enum p2p_scan_type { 313 P2P_SCAN_SOCIAL, 314 P2P_SCAN_FULL, 315 P2P_SCAN_SPECIFIC, 316 P2P_SCAN_SOCIAL_PLUS_ONE 317 }; 318 319 #define P2P_MAX_WPS_VENDOR_EXT 10 320 321 /** 322 * struct p2p_peer_info - P2P peer information 323 */ 324 struct p2p_peer_info { 325 /** 326 * p2p_device_addr - P2P Device Address of the peer 327 */ 328 u8 p2p_device_addr[ETH_ALEN]; 329 330 /** 331 * pri_dev_type - Primary Device Type 332 */ 333 u8 pri_dev_type[8]; 334 335 /** 336 * device_name - Device Name (0..32 octets encoded in UTF-8) 337 */ 338 char device_name[WPS_DEV_NAME_MAX_LEN + 1]; 339 340 /** 341 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 342 */ 343 char manufacturer[WPS_MANUFACTURER_MAX_LEN + 1]; 344 345 /** 346 * model_name - Model Name (0..32 octets encoded in UTF-8) 347 */ 348 char model_name[WPS_MODEL_NAME_MAX_LEN + 1]; 349 350 /** 351 * model_number - Model Number (0..32 octets encoded in UTF-8) 352 */ 353 char model_number[WPS_MODEL_NUMBER_MAX_LEN + 1]; 354 355 /** 356 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 357 */ 358 char serial_number[WPS_SERIAL_NUMBER_MAX_LEN + 1]; 359 360 /** 361 * level - Signal level 362 */ 363 int level; 364 365 /** 366 * config_methods - WPS Configuration Methods 367 */ 368 u16 config_methods; 369 370 /** 371 * dev_capab - Device Capabilities 372 */ 373 u8 dev_capab; 374 375 /** 376 * group_capab - Group Capabilities 377 */ 378 u8 group_capab; 379 380 /** 381 * wps_sec_dev_type_list - WPS secondary device type list 382 * 383 * This list includes from 0 to 16 Secondary Device Types as indicated 384 * by wps_sec_dev_type_list_len (8 * number of types). 385 */ 386 u8 wps_sec_dev_type_list[WPS_SEC_DEV_TYPE_MAX_LEN]; 387 388 /** 389 * wps_sec_dev_type_list_len - Length of secondary device type list 390 */ 391 size_t wps_sec_dev_type_list_len; 392 393 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 394 395 /** 396 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s) 397 */ 398 struct wpabuf *wfd_subelems; 399 400 /** 401 * vendor_elems - Unrecognized vendor elements 402 * 403 * This buffer includes any other vendor element than P2P, WPS, and WFD 404 * IE(s) from the frame that was used to discover the peer. 405 */ 406 struct wpabuf *vendor_elems; 407 408 /** 409 * p2ps_instance - P2PS Application Service Info 410 */ 411 struct wpabuf *p2ps_instance; 412 }; 413 414 enum p2p_prov_disc_status { 415 P2P_PROV_DISC_SUCCESS, 416 P2P_PROV_DISC_TIMEOUT, 417 P2P_PROV_DISC_REJECTED, 418 P2P_PROV_DISC_TIMEOUT_JOIN, 419 P2P_PROV_DISC_INFO_UNAVAILABLE, 420 }; 421 422 struct p2p_channel { 423 u8 op_class; 424 u8 chan; 425 }; 426 427 /** 428 * struct p2p_config - P2P configuration 429 * 430 * This configuration is provided to the P2P module during initialization with 431 * p2p_init(). 432 */ 433 struct p2p_config { 434 /** 435 * country - Country code to use in P2P operations 436 */ 437 char country[3]; 438 439 /** 440 * reg_class - Regulatory class for own listen channel 441 */ 442 u8 reg_class; 443 444 /** 445 * channel - Own listen channel 446 */ 447 u8 channel; 448 449 /** 450 * channel_forced - the listen channel was forced by configuration 451 * or by control interface and cannot be overridden 452 */ 453 u8 channel_forced; 454 455 /** 456 * Regulatory class for own operational channel 457 */ 458 u8 op_reg_class; 459 460 /** 461 * op_channel - Own operational channel 462 */ 463 u8 op_channel; 464 465 /** 466 * cfg_op_channel - Whether op_channel is hardcoded in configuration 467 */ 468 u8 cfg_op_channel; 469 470 /** 471 * channels - Own supported regulatory classes and channels 472 * 473 * List of supposerted channels per regulatory class. The regulatory 474 * classes are defined in IEEE Std 802.11-2007 Annex J and the 475 * numbering of the clases depends on the configured country code. 476 */ 477 struct p2p_channels channels; 478 479 /** 480 * cli_channels - Additional client channels 481 * 482 * This list of channels (if any) will be used when advertising local 483 * channels during GO Negotiation or Invitation for the cases where the 484 * local end may become the client. This may allow the peer to become a 485 * GO on additional channels if it supports these options. The main use 486 * case for this is to include passive-scan channels on devices that may 487 * not know their current location and have configured most channels to 488 * not allow initiation of radition (i.e., another device needs to take 489 * master responsibilities). 490 */ 491 struct p2p_channels cli_channels; 492 493 /** 494 * num_pref_chan - Number of pref_chan entries 495 */ 496 unsigned int num_pref_chan; 497 498 /** 499 * pref_chan - Preferred channels for GO Negotiation 500 */ 501 struct p2p_channel *pref_chan; 502 503 /** 504 * p2p_6ghz_disable - Disable 6GHz for P2P operations 505 */ 506 bool p2p_6ghz_disable; 507 508 /** 509 * pri_dev_type - Primary Device Type (see WPS) 510 */ 511 u8 pri_dev_type[8]; 512 513 /** 514 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 515 */ 516 #define P2P_SEC_DEVICE_TYPES 5 517 518 /** 519 * sec_dev_type - Optional secondary device types 520 */ 521 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 522 523 /** 524 * num_sec_dev_types - Number of sec_dev_type entries 525 */ 526 size_t num_sec_dev_types; 527 528 /** 529 * dev_addr - P2P Device Address 530 */ 531 u8 dev_addr[ETH_ALEN]; 532 533 /** 534 * dev_name - Device Name 535 */ 536 char *dev_name; 537 538 char *manufacturer; 539 char *model_name; 540 char *model_number; 541 char *serial_number; 542 543 u8 uuid[16]; 544 u16 config_methods; 545 546 /** 547 * concurrent_operations - Whether concurrent operations are supported 548 */ 549 int concurrent_operations; 550 551 /** 552 * max_peers - Maximum number of discovered peers to remember 553 * 554 * If more peers are discovered, older entries will be removed to make 555 * room for the new ones. 556 */ 557 size_t max_peers; 558 559 /** 560 * p2p_intra_bss - Intra BSS communication is supported 561 */ 562 int p2p_intra_bss; 563 564 /** 565 * ssid_postfix - Postfix data to add to the SSID 566 * 567 * This data will be added to the end of the SSID after the 568 * DIRECT-<random two octets> prefix. 569 */ 570 u8 ssid_postfix[SSID_MAX_LEN - 9]; 571 572 /** 573 * ssid_postfix_len - Length of the ssid_postfix data 574 */ 575 size_t ssid_postfix_len; 576 577 /** 578 * max_listen - Maximum listen duration in ms 579 */ 580 unsigned int max_listen; 581 582 /** 583 * passphrase_len - Passphrase length (8..63) 584 * 585 * This parameter controls the length of the random passphrase that is 586 * generated at the GO. 587 */ 588 unsigned int passphrase_len; 589 590 /** 591 * cb_ctx - Context to use with callback functions 592 */ 593 void *cb_ctx; 594 595 /** 596 * debug_print - Debug print 597 * @ctx: Callback context from cb_ctx 598 * @level: Debug verbosity level (MSG_*) 599 * @msg: Debug message 600 */ 601 void (*debug_print)(void *ctx, int level, const char *msg); 602 603 604 /* Callbacks to request lower layer driver operations */ 605 606 /** 607 * p2p_scan - Request a P2P scan/search 608 * @ctx: Callback context from cb_ctx 609 * @type: Scan type 610 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 611 * @num_req_dev_types: Number of requested device types 612 * @req_dev_types: Array containing requested device types 613 * @dev_id: Device ID to search for or %NULL to find all devices 614 * @pw_id: Device Password ID 615 * Returns: 0 on success, -1 on failure 616 * 617 * This callback function is used to request a P2P scan or search 618 * operation to be completed. Type type argument specifies which type 619 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 620 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 621 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC 622 * request a scan of a single channel specified by freq. 623 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 624 * plus one extra channel specified by freq. 625 * 626 * The full scan is used for the initial scan to find group owners from 627 * all. The other types are used during search phase scan of the social 628 * channels (with potential variation if the Listen channel of the 629 * target peer is known or if other channels are scanned in steps). 630 * 631 * The scan results are returned after this call by calling 632 * p2p_scan_res_handler() for each scan result that has a P2P IE and 633 * then calling p2p_scan_res_handled() to indicate that all scan 634 * results have been indicated. 635 */ 636 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 637 unsigned int num_req_dev_types, 638 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 639 640 /** 641 * send_probe_resp - Transmit a Probe Response frame 642 * @ctx: Callback context from cb_ctx 643 * @buf: Probe Response frame (including the header and body) 644 * @freq: Forced frequency (in MHz) to use or 0. 645 * Returns: 0 on success, -1 on failure 646 * 647 * This function is used to reply to Probe Request frames that were 648 * indicated with a call to p2p_probe_req_rx(). The response is to be 649 * sent on the same channel, unless otherwise specified, or to be 650 * dropped if the driver is not listening to Probe Request frames 651 * anymore. 652 * 653 * Alternatively, the responsibility for building the Probe Response 654 * frames in Listen state may be in another system component in which 655 * case this function need to be implemented (i.e., the function 656 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 657 * Response frames in such a case are available from the 658 * start_listen() callback. It should be noted that the received Probe 659 * Request frames must be indicated by calling p2p_probe_req_rx() even 660 * if this send_probe_resp() is not used. 661 */ 662 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf, 663 unsigned int freq); 664 665 /** 666 * send_action - Transmit an Action frame 667 * @ctx: Callback context from cb_ctx 668 * @freq: Frequency in MHz for the channel on which to transmit 669 * @dst: Destination MAC address (Address 1) 670 * @src: Source MAC address (Address 2) 671 * @bssid: BSSID (Address 3) 672 * @buf: Frame body (starting from Category field) 673 * @len: Length of buf in octets 674 * @wait_time: How many msec to wait for a response frame 675 * @scheduled: Return value indicating whether the transmissions was 676 * scheduled to happen once the radio is available 677 * Returns: 0 on success, -1 on failure 678 * 679 * The Action frame may not be transmitted immediately and the status 680 * of the transmission must be reported by calling 681 * p2p_send_action_cb() once the frame has either been transmitted or 682 * it has been dropped due to excessive retries or other failure to 683 * transmit. 684 */ 685 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 686 const u8 *src, const u8 *bssid, const u8 *buf, 687 size_t len, unsigned int wait_time, int *scheduled); 688 689 /** 690 * send_action_done - Notify that Action frame sequence was completed 691 * @ctx: Callback context from cb_ctx 692 * 693 * This function is called when the Action frame sequence that was 694 * started with send_action() has been completed, i.e., when there is 695 * no need to wait for a response from the destination peer anymore. 696 */ 697 void (*send_action_done)(void *ctx); 698 699 /** 700 * start_listen - Start Listen state 701 * @ctx: Callback context from cb_ctx 702 * @freq: Frequency of the listen channel in MHz 703 * @duration: Duration for the Listen state in milliseconds 704 * @probe_resp_ie: IE(s) to be added to Probe Response frames 705 * Returns: 0 on success, -1 on failure 706 * 707 * This Listen state may not start immediately since the driver may 708 * have other pending operations to complete first. Once the Listen 709 * state has started, p2p_listen_cb() must be called to notify the P2P 710 * module. Once the Listen state is stopped, p2p_listen_end() must be 711 * called to notify the P2P module that the driver is not in the Listen 712 * state anymore. 713 * 714 * If the send_probe_resp() is not used for generating the response, 715 * the IEs from probe_resp_ie need to be added to the end of the Probe 716 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 717 * information can be ignored. 718 */ 719 int (*start_listen)(void *ctx, unsigned int freq, 720 unsigned int duration, 721 const struct wpabuf *probe_resp_ie); 722 /** 723 * stop_listen - Stop Listen state 724 * @ctx: Callback context from cb_ctx 725 * 726 * This callback can be used to stop a Listen state operation that was 727 * previously requested with start_listen(). 728 */ 729 void (*stop_listen)(void *ctx); 730 731 /** 732 * get_noa - Get current Notice of Absence attribute payload 733 * @ctx: Callback context from cb_ctx 734 * @interface_addr: P2P Interface Address of the GO 735 * @buf: Buffer for returning NoA 736 * @buf_len: Buffer length in octets 737 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 738 * advertized, or -1 on failure 739 * 740 * This function is used to fetch the current Notice of Absence 741 * attribute value from GO. 742 */ 743 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 744 size_t buf_len); 745 746 /* Callbacks to notify events to upper layer management entity */ 747 748 /** 749 * dev_found - Notification of a found P2P Device 750 * @ctx: Callback context from cb_ctx 751 * @addr: Source address of the message triggering this notification 752 * @info: P2P peer information 753 * @new_device: Inform if the peer is newly found 754 * 755 * This callback is used to notify that a new P2P Device has been 756 * found. This may happen, e.g., during Search state based on scan 757 * results or during Listen state based on receive Probe Request and 758 * Group Owner Negotiation Request. 759 */ 760 void (*dev_found)(void *ctx, const u8 *addr, 761 const struct p2p_peer_info *info, 762 int new_device); 763 764 /** 765 * dev_lost - Notification of a lost P2P Device 766 * @ctx: Callback context from cb_ctx 767 * @dev_addr: P2P Device Address of the lost P2P Device 768 * 769 * This callback is used to notify that a P2P Device has been deleted. 770 */ 771 void (*dev_lost)(void *ctx, const u8 *dev_addr); 772 773 /** 774 * find_stopped - Notification of a p2p_find operation stopping 775 * @ctx: Callback context from cb_ctx 776 */ 777 void (*find_stopped)(void *ctx); 778 779 /** 780 * go_neg_req_rx - Notification of a receive GO Negotiation Request 781 * @ctx: Callback context from cb_ctx 782 * @src: Source address of the message triggering this notification 783 * @dev_passwd_id: WPS Device Password ID 784 * @go_intent: Peer's GO Intent 785 * 786 * This callback is used to notify that a P2P Device is requesting 787 * group owner negotiation with us, but we do not have all the 788 * necessary information to start GO Negotiation. This indicates that 789 * the local user has not authorized the connection yet by providing a 790 * PIN or PBC button press. This information can be provided with a 791 * call to p2p_connect(). 792 */ 793 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id, 794 u8 go_intent); 795 796 /** 797 * go_neg_completed - Notification of GO Negotiation results 798 * @ctx: Callback context from cb_ctx 799 * @res: GO Negotiation results 800 * 801 * This callback is used to notify that Group Owner Negotiation has 802 * been completed. Non-zero struct p2p_go_neg_results::status indicates 803 * failed negotiation. In case of success, this function is responsible 804 * for creating a new group interface (or using the existing interface 805 * depending on driver features), setting up the group interface in 806 * proper mode based on struct p2p_go_neg_results::role_go and 807 * initializing WPS provisioning either as a Registrar (if GO) or as an 808 * Enrollee. Successful WPS provisioning must be indicated by calling 809 * p2p_wps_success_cb(). The callee is responsible for timing out group 810 * formation if WPS provisioning cannot be completed successfully 811 * within 15 seconds. 812 */ 813 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 814 815 /** 816 * sd_request - Callback on Service Discovery Request 817 * @ctx: Callback context from cb_ctx 818 * @freq: Frequency (in MHz) of the channel 819 * @sa: Source address of the request 820 * @dialog_token: Dialog token 821 * @update_indic: Service Update Indicator from the source of request 822 * @tlvs: P2P Service Request TLV(s) 823 * @tlvs_len: Length of tlvs buffer in octets 824 * 825 * This callback is used to indicate reception of a service discovery 826 * request. Response to the query must be indicated by calling 827 * p2p_sd_response() with the context information from the arguments to 828 * this callback function. 829 * 830 * This callback handler can be set to %NULL to indicate that service 831 * discovery is not supported. 832 */ 833 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 834 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 835 836 /** 837 * sd_response - Callback on Service Discovery Response 838 * @ctx: Callback context from cb_ctx 839 * @sa: Source address of the request 840 * @update_indic: Service Update Indicator from the source of response 841 * @tlvs: P2P Service Response TLV(s) 842 * @tlvs_len: Length of tlvs buffer in octets 843 * 844 * This callback is used to indicate reception of a service discovery 845 * response. This callback handler can be set to %NULL if no service 846 * discovery requests are used. The information provided with this call 847 * is replies to the queries scheduled with p2p_sd_request(). 848 */ 849 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 850 const u8 *tlvs, size_t tlvs_len); 851 852 /** 853 * prov_disc_req - Callback on Provisiong Discovery Request 854 * @ctx: Callback context from cb_ctx 855 * @peer: Source address of the request 856 * @config_methods: Requested WPS Config Method 857 * @dev_addr: P2P Device Address of the found P2P Device 858 * @pri_dev_type: Primary Device Type 859 * @dev_name: Device Name 860 * @supp_config_methods: Supported configuration Methods 861 * @dev_capab: Device Capabilities 862 * @group_capab: Group Capabilities 863 * @group_id: P2P Group ID (or %NULL if not included) 864 * @group_id_len: Length of P2P Group ID 865 * 866 * This callback is used to indicate reception of a Provision Discovery 867 * Request frame that the P2P module accepted. 868 */ 869 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 870 const u8 *dev_addr, const u8 *pri_dev_type, 871 const char *dev_name, u16 supp_config_methods, 872 u8 dev_capab, u8 group_capab, 873 const u8 *group_id, size_t group_id_len); 874 875 /** 876 * prov_disc_resp - Callback on Provisiong Discovery Response 877 * @ctx: Callback context from cb_ctx 878 * @peer: Source address of the response 879 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 880 * 881 * This callback is used to indicate reception of a Provision Discovery 882 * Response frame for a pending request scheduled with 883 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 884 * provision discovery is not used. 885 */ 886 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 887 888 /** 889 * prov_disc_fail - Callback on Provision Discovery failure 890 * @ctx: Callback context from cb_ctx 891 * @peer: Source address of the response 892 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 893 * @adv_id: If non-zero, then the adv_id of the PD Request 894 * @adv_mac: P2P Device Address of the advertizer 895 * @deferred_session_resp: Deferred session response sent by advertizer 896 * 897 * This callback is used to indicate either a failure or no response 898 * to an earlier provision discovery request. 899 * 900 * This callback handler can be set to %NULL if provision discovery 901 * is not used or failures do not need to be indicated. 902 */ 903 void (*prov_disc_fail)(void *ctx, const u8 *peer, 904 enum p2p_prov_disc_status status, 905 u32 adv_id, const u8 *adv_mac, 906 const char *deferred_session_resp); 907 908 /** 909 * invitation_process - Optional callback for processing Invitations 910 * @ctx: Callback context from cb_ctx 911 * @sa: Source address of the Invitation Request 912 * @bssid: P2P Group BSSID from the request or %NULL if not included 913 * @go_dev_addr: GO Device Address from P2P Group ID 914 * @ssid: SSID from P2P Group ID 915 * @ssid_len: Length of ssid buffer in octets 916 * @go: Variable for returning whether the local end is GO in the group 917 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 918 * @force_freq: Variable for returning forced frequency for the group 919 * @persistent_group: Whether this is an invitation to reinvoke a 920 * persistent group (instead of invitation to join an active 921 * group) 922 * @channels: Available operating channels for the group 923 * @dev_pw_id: Device Password ID for NFC static handover or -1 if not 924 * used 925 * Returns: Status code (P2P_SC_*) 926 * 927 * This optional callback can be used to implement persistent reconnect 928 * by allowing automatic restarting of persistent groups without user 929 * interaction. If this callback is not implemented (i.e., is %NULL), 930 * the received Invitation Request frames are replied with 931 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 932 * invitation_result() callback. 933 * 934 * If the requested parameters are acceptable and the group is known, 935 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 936 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 937 * can be returned if there is not enough data to provide immediate 938 * response, i.e., if some sort of user interaction is needed. The 939 * invitation_received() callback will be called in that case 940 * immediately after this call. 941 */ 942 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 943 const u8 *go_dev_addr, const u8 *ssid, 944 size_t ssid_len, int *go, u8 *group_bssid, 945 int *force_freq, int persistent_group, 946 const struct p2p_channels *channels, 947 int dev_pw_id); 948 949 /** 950 * invitation_received - Callback on Invitation Request RX 951 * @ctx: Callback context from cb_ctx 952 * @sa: Source address of the Invitation Request 953 * @bssid: P2P Group BSSID or %NULL if not received 954 * @ssid: SSID of the group 955 * @ssid_len: Length of ssid in octets 956 * @go_dev_addr: GO Device Address 957 * @status: Response Status 958 * @op_freq: Operational frequency for the group 959 * 960 * This callback is used to indicate sending of an Invitation Response 961 * for a received Invitation Request. If status == 0 (success), the 962 * upper layer code is responsible for starting the group. status == 1 963 * indicates need to get user authorization for the group. Other status 964 * values indicate that the invitation request was rejected. 965 */ 966 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 967 const u8 *ssid, size_t ssid_len, 968 const u8 *go_dev_addr, u8 status, 969 int op_freq); 970 971 /** 972 * invitation_result - Callback on Invitation result 973 * @ctx: Callback context from cb_ctx 974 * @status: Negotiation result (Status Code) 975 * @bssid: P2P Group BSSID or %NULL if not received 976 * @channels: Available operating channels for the group 977 * @addr: Peer address 978 * @freq: Frequency (in MHz) indicated during invitation or 0 979 * @peer_oper_freq: Operating frequency (in MHz) advertized by the peer 980 * during invitation or 0 981 * 982 * This callback is used to indicate result of an Invitation procedure 983 * started with a call to p2p_invite(). The indicated status code is 984 * the value received from the peer in Invitation Response with 0 985 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 986 * local failure in transmitting the Invitation Request. 987 */ 988 void (*invitation_result)(void *ctx, int status, const u8 *bssid, 989 const struct p2p_channels *channels, 990 const u8 *addr, int freq, int peer_oper_freq); 991 992 /** 993 * go_connected - Check whether we are connected to a GO 994 * @ctx: Callback context from cb_ctx 995 * @dev_addr: P2P Device Address of a GO 996 * Returns: 1 if we are connected as a P2P client to the specified GO 997 * or 0 if not. 998 */ 999 int (*go_connected)(void *ctx, const u8 *dev_addr); 1000 1001 /** 1002 * presence_resp - Callback on Presence Response 1003 * @ctx: Callback context from cb_ctx 1004 * @src: Source address (GO's P2P Interface Address) 1005 * @status: Result of the request (P2P_SC_*) 1006 * @noa: Returned NoA value 1007 * @noa_len: Length of the NoA buffer in octets 1008 */ 1009 void (*presence_resp)(void *ctx, const u8 *src, u8 status, 1010 const u8 *noa, size_t noa_len); 1011 1012 /** 1013 * is_concurrent_session_active - Check whether concurrent session is 1014 * active on other virtual interfaces 1015 * @ctx: Callback context from cb_ctx 1016 * Returns: 1 if concurrent session is active on other virtual interface 1017 * or 0 if not. 1018 */ 1019 int (*is_concurrent_session_active)(void *ctx); 1020 1021 /** 1022 * is_p2p_in_progress - Check whether P2P operation is in progress 1023 * @ctx: Callback context from cb_ctx 1024 * Returns: 1 if P2P operation (e.g., group formation) is in progress 1025 * or 0 if not. 1026 */ 1027 int (*is_p2p_in_progress)(void *ctx); 1028 1029 /** 1030 * Determine if we have a persistent group we share with remote peer 1031 * and allocate interface for this group if needed 1032 * @ctx: Callback context from cb_ctx 1033 * @addr: Peer device address to search for 1034 * @ssid: Persistent group SSID or %NULL if any 1035 * @ssid_len: Length of @ssid 1036 * @go_dev_addr: Buffer for returning GO P2P Device Address 1037 * @ret_ssid: Buffer for returning group SSID 1038 * @ret_ssid_len: Buffer for returning length of @ssid 1039 * @intended_iface_addr: Buffer for returning intended iface address 1040 * Returns: 1 if a matching persistent group was found, 0 otherwise 1041 */ 1042 int (*get_persistent_group)(void *ctx, const u8 *addr, const u8 *ssid, 1043 size_t ssid_len, u8 *go_dev_addr, 1044 u8 *ret_ssid, size_t *ret_ssid_len, 1045 u8 *intended_iface_addr); 1046 1047 /** 1048 * Get information about a possible local GO role 1049 * @ctx: Callback context from cb_ctx 1050 * @intended_addr: Buffer for returning intended GO interface address 1051 * @ssid: Buffer for returning group SSID 1052 * @ssid_len: Buffer for returning length of @ssid 1053 * @group_iface: Buffer for returning whether a separate group interface 1054 * would be used 1055 * @freq: Variable for returning the current operating frequency of a 1056 * currently running P2P GO. 1057 * Returns: 1 if GO info found, 0 otherwise 1058 * 1059 * This is used to compose New Group settings (SSID, and intended 1060 * address) during P2PS provisioning if results of provisioning *might* 1061 * result in our being an autonomous GO. 1062 */ 1063 int (*get_go_info)(void *ctx, u8 *intended_addr, 1064 u8 *ssid, size_t *ssid_len, int *group_iface, 1065 unsigned int *freq); 1066 1067 /** 1068 * remove_stale_groups - Remove stale P2PS groups 1069 * 1070 * Because P2PS stages *potential* GOs, and remote devices can remove 1071 * credentials unilaterally, we need to make sure we don't let stale 1072 * unusable groups build up. 1073 */ 1074 int (*remove_stale_groups)(void *ctx, const u8 *peer, const u8 *go, 1075 const u8 *ssid, size_t ssid_len); 1076 1077 /** 1078 * p2ps_prov_complete - P2PS provisioning complete 1079 * 1080 * When P2PS provisioning completes (successfully or not) we must 1081 * transmit all of the results to the upper layers. 1082 */ 1083 void (*p2ps_prov_complete)(void *ctx, u8 status, const u8 *dev, 1084 const u8 *adv_mac, const u8 *ses_mac, 1085 const u8 *grp_mac, u32 adv_id, u32 ses_id, 1086 u8 conncap, int passwd_id, 1087 const u8 *persist_ssid, 1088 size_t persist_ssid_size, int response_done, 1089 int prov_start, const char *session_info, 1090 const u8 *feat_cap, size_t feat_cap_len, 1091 unsigned int freq, const u8 *group_ssid, 1092 size_t group_ssid_len); 1093 1094 /** 1095 * prov_disc_resp_cb - Callback for indicating completion of PD Response 1096 * @ctx: Callback context from cb_ctx 1097 * Returns: 1 if operation was started, 0 otherwise 1098 * 1099 * This callback can be used to perform any pending actions after 1100 * provisioning. It is mainly used for P2PS pending group creation. 1101 */ 1102 int (*prov_disc_resp_cb)(void *ctx); 1103 1104 /** 1105 * p2ps_group_capability - Determine group capability 1106 * @ctx: Callback context from cb_ctx 1107 * @incoming: Peer requested roles, expressed with P2PS_SETUP_* bitmap. 1108 * @role: Local roles, expressed with P2PS_SETUP_* bitmap. 1109 * @force_freq: Variable for returning forced frequency for the group. 1110 * @pref_freq: Variable for returning preferred frequency for the group. 1111 * Returns: P2PS_SETUP_* bitmap of group capability result. 1112 * 1113 * This function can be used to determine group capability and 1114 * frequencies based on information from P2PS PD exchange and the 1115 * current state of ongoing groups and driver capabilities. 1116 */ 1117 u8 (*p2ps_group_capability)(void *ctx, u8 incoming, u8 role, 1118 unsigned int *force_freq, 1119 unsigned int *pref_freq); 1120 1121 /** 1122 * get_pref_freq_list - Get preferred frequency list for an interface 1123 * @ctx: Callback context from cb_ctx 1124 * @go: Whether the use if for GO role 1125 * @len: Length of freq_list in entries (both IN and OUT) 1126 * @freq_list: Buffer for returning the preferred frequencies (MHz) 1127 * Returns: 0 on success, -1 on failure 1128 * 1129 * This function can be used to query the preferred frequency list from 1130 * the driver specific to a particular interface type. 1131 */ 1132 int (*get_pref_freq_list)(void *ctx, int go, 1133 unsigned int *len, unsigned int *freq_list); 1134 }; 1135 1136 1137 /* P2P module initialization/deinitialization */ 1138 1139 /** 1140 * p2p_init - Initialize P2P module 1141 * @cfg: P2P module configuration 1142 * Returns: Pointer to private data or %NULL on failure 1143 * 1144 * This function is used to initialize global P2P module context (one per 1145 * device). The P2P module will keep a copy of the configuration data, so the 1146 * caller does not need to maintain this structure. However, the callback 1147 * functions and the context parameters to them must be kept available until 1148 * the P2P module is deinitialized with p2p_deinit(). 1149 */ 1150 struct p2p_data * p2p_init(const struct p2p_config *cfg); 1151 1152 /** 1153 * p2p_deinit - Deinitialize P2P module 1154 * @p2p: P2P module context from p2p_init() 1155 */ 1156 void p2p_deinit(struct p2p_data *p2p); 1157 1158 /** 1159 * p2p_flush - Flush P2P module state 1160 * @p2p: P2P module context from p2p_init() 1161 * 1162 * This command removes the P2P module state like peer device entries. 1163 */ 1164 void p2p_flush(struct p2p_data *p2p); 1165 1166 /** 1167 * p2p_unauthorize - Unauthorize the specified peer device 1168 * @p2p: P2P module context from p2p_init() 1169 * @addr: P2P peer entry to be unauthorized 1170 * Returns: 0 on success, -1 on failure 1171 * 1172 * This command removes any connection authorization from the specified P2P 1173 * peer device address. This can be used, e.g., to cancel effect of a previous 1174 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 1175 * GO Negotiation. 1176 */ 1177 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 1178 1179 /** 1180 * p2p_set_dev_name - Set device name 1181 * @p2p: P2P module context from p2p_init() 1182 * Returns: 0 on success, -1 on failure 1183 * 1184 * This function can be used to update the P2P module configuration with 1185 * information that was not available at the time of the p2p_init() call. 1186 */ 1187 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 1188 1189 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 1190 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 1191 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 1192 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 1193 1194 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 1195 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 1196 1197 /** 1198 * p2p_set_pri_dev_type - Set primary device type 1199 * @p2p: P2P module context from p2p_init() 1200 * Returns: 0 on success, -1 on failure 1201 * 1202 * This function can be used to update the P2P module configuration with 1203 * information that was not available at the time of the p2p_init() call. 1204 */ 1205 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 1206 1207 /** 1208 * p2p_set_sec_dev_types - Set secondary device types 1209 * @p2p: P2P module context from p2p_init() 1210 * Returns: 0 on success, -1 on failure 1211 * 1212 * This function can be used to update the P2P module configuration with 1213 * information that was not available at the time of the p2p_init() call. 1214 */ 1215 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 1216 size_t num_dev_types); 1217 1218 int p2p_set_country(struct p2p_data *p2p, const char *country); 1219 1220 1221 /* Commands from upper layer management entity */ 1222 1223 enum p2p_discovery_type { 1224 P2P_FIND_START_WITH_FULL, 1225 P2P_FIND_ONLY_SOCIAL, 1226 P2P_FIND_PROGRESSIVE 1227 }; 1228 1229 /** 1230 * p2p_find - Start P2P Find (Device Discovery) 1231 * @p2p: P2P module context from p2p_init() 1232 * @timeout: Timeout for find operation in seconds or 0 for no timeout 1233 * @type: Device Discovery type 1234 * @num_req_dev_types: Number of requested device types 1235 * @req_dev_types: Requested device types array, must be an array 1236 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 1237 * requested device types. 1238 * @dev_id: Device ID to search for or %NULL to find all devices 1239 * @search_delay: Extra delay in milliseconds between search iterations 1240 * @seek_count: Number of ASP Service Strings in the seek_string array 1241 * @seek_string: ASP Service Strings to query for in Probe Requests 1242 * @freq: Requested first scan frequency (in MHz) to modify type == 1243 * P2P_FIND_START_WITH_FULL behavior. 0 = Use normal full scan. 1244 * If p2p_find is already in progress, this parameter is ignored and full 1245 * scan will be executed. 1246 * Returns: 0 on success, -1 on failure 1247 */ 1248 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1249 enum p2p_discovery_type type, 1250 unsigned int num_req_dev_types, const u8 *req_dev_types, 1251 const u8 *dev_id, unsigned int search_delay, 1252 u8 seek_count, const char **seek_string, int freq); 1253 1254 /** 1255 * p2p_notify_scan_trigger_status - Indicate scan trigger status 1256 * @p2p: P2P module context from p2p_init() 1257 * @status: 0 on success, -1 on failure 1258 */ 1259 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status); 1260 1261 /** 1262 * p2p_stop_find - Stop P2P Find (Device Discovery) 1263 * @p2p: P2P module context from p2p_init() 1264 */ 1265 void p2p_stop_find(struct p2p_data *p2p); 1266 1267 /** 1268 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 1269 * @p2p: P2P module context from p2p_init() 1270 * @freq: Frequency in MHz for next operation 1271 * 1272 * This is like p2p_stop_find(), but Listen state is not stopped if we are 1273 * already on the same frequency. 1274 */ 1275 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 1276 1277 /** 1278 * p2p_listen - Start P2P Listen state for specified duration 1279 * @p2p: P2P module context from p2p_init() 1280 * @timeout: Listen state duration in milliseconds 1281 * Returns: 0 on success, -1 on failure 1282 * 1283 * This function can be used to request the P2P module to keep the device 1284 * discoverable on the listen channel for an extended set of time. At least in 1285 * its current form, this is mainly used for testing purposes and may not be of 1286 * much use for normal P2P operations. 1287 */ 1288 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 1289 1290 /** 1291 * p2p_stop_listen - Stop P2P Listen 1292 * @p2p: P2P module context from p2p_init() 1293 */ 1294 void p2p_stop_listen(struct p2p_data *p2p); 1295 1296 /** 1297 * p2p_connect - Start P2P group formation (GO negotiation) 1298 * @p2p: P2P module context from p2p_init() 1299 * @peer_addr: MAC address of the peer P2P client 1300 * @wps_method: WPS method to be used in provisioning 1301 * @go_intent: Local GO intent value (1..15) 1302 * @own_interface_addr: Intended interface address to use with the group 1303 * @force_freq: The only allowed channel frequency in MHz or 0 1304 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 1305 * persistent group without persistent reconnect, 2 = persistent group with 1306 * persistent reconnect) 1307 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 1308 * a new SSID 1309 * @force_ssid_len: Length of $force_ssid buffer 1310 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 1311 * Negotiation as an interoperability workaround when initiating group 1312 * formation 1313 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1314 * force_freq == 0) 1315 * Returns: 0 on success, -1 on failure 1316 */ 1317 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1318 enum p2p_wps_method wps_method, 1319 int go_intent, const u8 *own_interface_addr, 1320 unsigned int force_freq, int persistent_group, 1321 const u8 *force_ssid, size_t force_ssid_len, 1322 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id); 1323 1324 /** 1325 * p2p_authorize - Authorize P2P group formation (GO negotiation) 1326 * @p2p: P2P module context from p2p_init() 1327 * @peer_addr: MAC address of the peer P2P client 1328 * @wps_method: WPS method to be used in provisioning 1329 * @go_intent: Local GO intent value (1..15) 1330 * @own_interface_addr: Intended interface address to use with the group 1331 * @force_freq: The only allowed channel frequency in MHz or 0 1332 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 1333 * persistent group without persistent reconnect, 2 = persistent group with 1334 * persistent reconnect) 1335 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 1336 * a new SSID 1337 * @force_ssid_len: Length of $force_ssid buffer 1338 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1339 * force_freq == 0) 1340 * Returns: 0 on success, -1 on failure 1341 * 1342 * This is like p2p_connect(), but the actual group negotiation is not 1343 * initiated automatically, i.e., the other end is expected to do that. 1344 */ 1345 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1346 enum p2p_wps_method wps_method, 1347 int go_intent, const u8 *own_interface_addr, 1348 unsigned int force_freq, int persistent_group, 1349 const u8 *force_ssid, size_t force_ssid_len, 1350 unsigned int pref_freq, u16 oob_pw_id); 1351 1352 /** 1353 * p2p_reject - Reject peer device (explicitly block connection attempts) 1354 * @p2p: P2P module context from p2p_init() 1355 * @peer_addr: MAC address of the peer P2P client 1356 * Returns: 0 on success, -1 on failure 1357 */ 1358 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 1359 1360 /** 1361 * p2p_prov_disc_req - Send Provision Discovery Request 1362 * @p2p: P2P module context from p2p_init() 1363 * @peer_addr: MAC address of the peer P2P client 1364 * @p2ps_prov: Provisioning info for P2PS 1365 * @config_methods: WPS Config Methods value (only one bit set) 1366 * @join: Whether this is used by a client joining an active group 1367 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 1368 * @user_initiated_pd: Flag to indicate if initiated by user or not 1369 * Returns: 0 on success, -1 on failure 1370 * 1371 * This function can be used to request a discovered P2P peer to display a PIN 1372 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 1373 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 1374 * is transmitted once immediately and if no response is received, the frame 1375 * will be sent again whenever the target device is discovered during device 1376 * dsicovery (start with a p2p_find() call). Response from the peer is 1377 * indicated with the p2p_config::prov_disc_resp() callback. 1378 */ 1379 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1380 struct p2ps_provision *p2ps_prov, u16 config_methods, 1381 int join, int force_freq, 1382 int user_initiated_pd); 1383 1384 /** 1385 * p2p_sd_request - Schedule a service discovery query 1386 * @p2p: P2P module context from p2p_init() 1387 * @dst: Destination peer or %NULL to apply for all peers 1388 * @tlvs: P2P Service Query TLV(s) 1389 * Returns: Reference to the query or %NULL on failure 1390 * 1391 * Response to the query is indicated with the p2p_config::sd_response() 1392 * callback. 1393 */ 1394 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 1395 const struct wpabuf *tlvs); 1396 1397 #ifdef CONFIG_WIFI_DISPLAY 1398 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 1399 const struct wpabuf *tlvs); 1400 #endif /* CONFIG_WIFI_DISPLAY */ 1401 1402 /** 1403 * p2p_sd_cancel_request - Cancel a pending service discovery query 1404 * @p2p: P2P module context from p2p_init() 1405 * @req: Query reference from p2p_sd_request() 1406 * Returns: 0 if request for cancelled; -1 if not found 1407 */ 1408 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 1409 1410 /** 1411 * p2p_sd_response - Send response to a service discovery query 1412 * @p2p: P2P module context from p2p_init() 1413 * @freq: Frequency from p2p_config::sd_request() callback 1414 * @dst: Destination address from p2p_config::sd_request() callback 1415 * @dialog_token: Dialog token from p2p_config::sd_request() callback 1416 * @resp_tlvs: P2P Service Response TLV(s) 1417 * 1418 * This function is called as a response to the request indicated with 1419 * p2p_config::sd_request() callback. 1420 */ 1421 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1422 u8 dialog_token, const struct wpabuf *resp_tlvs); 1423 1424 /** 1425 * p2p_sd_service_update - Indicate a change in local services 1426 * @p2p: P2P module context from p2p_init() 1427 * 1428 * This function needs to be called whenever there is a change in availability 1429 * of the local services. This will increment the Service Update Indicator 1430 * value which will be used in SD Request and Response frames. 1431 */ 1432 void p2p_sd_service_update(struct p2p_data *p2p); 1433 1434 1435 enum p2p_invite_role { 1436 P2P_INVITE_ROLE_GO, 1437 P2P_INVITE_ROLE_ACTIVE_GO, 1438 P2P_INVITE_ROLE_CLIENT 1439 }; 1440 1441 /** 1442 * p2p_invite - Invite a P2P Device into a group 1443 * @p2p: P2P module context from p2p_init() 1444 * @peer: Device Address of the peer P2P Device 1445 * @role: Local role in the group 1446 * @bssid: Group BSSID or %NULL if not known 1447 * @ssid: Group SSID 1448 * @ssid_len: Length of ssid in octets 1449 * @force_freq: The only allowed channel frequency in MHz or 0 1450 * @go_dev_addr: Forced GO Device Address or %NULL if none 1451 * @persistent_group: Whether this is to reinvoke a persistent group 1452 * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if 1453 * force_freq == 0) 1454 * @dev_pw_id: Device Password ID from OOB Device Password (NFC) static handover 1455 * case or -1 if not used 1456 * Returns: 0 on success, -1 on failure 1457 */ 1458 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1459 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1460 unsigned int force_freq, const u8 *go_dev_addr, 1461 int persistent_group, unsigned int pref_freq, int dev_pw_id); 1462 1463 /** 1464 * p2p_presence_req - Request GO presence 1465 * @p2p: P2P module context from p2p_init() 1466 * @go_interface_addr: GO P2P Interface Address 1467 * @own_interface_addr: Own P2P Interface Address for this group 1468 * @freq: Group operating frequence (in MHz) 1469 * @duration1: Preferred presence duration in microseconds 1470 * @interval1: Preferred presence interval in microseconds 1471 * @duration2: Acceptable presence duration in microseconds 1472 * @interval2: Acceptable presence interval in microseconds 1473 * Returns: 0 on success, -1 on failure 1474 * 1475 * If both duration and interval values are zero, the parameter pair is not 1476 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1477 */ 1478 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1479 const u8 *own_interface_addr, unsigned int freq, 1480 u32 duration1, u32 interval1, u32 duration2, 1481 u32 interval2); 1482 1483 /** 1484 * p2p_ext_listen - Set Extended Listen Timing 1485 * @p2p: P2P module context from p2p_init() 1486 * @freq: Group operating frequence (in MHz) 1487 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1488 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1489 * Returns: 0 on success, -1 on failure 1490 * 1491 * This function can be used to enable or disable (period = interval = 0) 1492 * Extended Listen Timing. When enabled, the P2P Device will become 1493 * discoverable (go into Listen State) every @interval milliseconds for at 1494 * least @period milliseconds. 1495 */ 1496 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1497 unsigned int interval); 1498 1499 /* Event notifications from upper layer management operations */ 1500 1501 /** 1502 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1503 * @p2p: P2P module context from p2p_init() 1504 * @mac_addr: Peer address 1505 * 1506 * This function is used to report successfully completed WPS provisioning 1507 * during group formation in both GO/Registrar and client/Enrollee roles. 1508 */ 1509 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1510 1511 /** 1512 * p2p_group_formation_failed - Report failed WPS provisioning 1513 * @p2p: P2P module context from p2p_init() 1514 * 1515 * This function is used to report failed group formation. This can happen 1516 * either due to failed WPS provisioning or due to 15 second timeout during 1517 * the provisioning phase. 1518 */ 1519 void p2p_group_formation_failed(struct p2p_data *p2p); 1520 1521 /** 1522 * p2p_get_provisioning_info - Get any stored provisioning info 1523 * @p2p: P2P module context from p2p_init() 1524 * @addr: Peer P2P Device Address 1525 * Returns: WPS provisioning information (WPS config method) or 0 if no 1526 * information is available 1527 * 1528 * This function is used to retrieve stored WPS provisioning info for the given 1529 * peer. 1530 */ 1531 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1532 1533 /** 1534 * p2p_clear_provisioning_info - Clear any stored provisioning info 1535 * @p2p: P2P module context from p2p_init() 1536 * @iface_addr: Peer P2P Device Address 1537 * 1538 * This function is used to clear stored WPS provisioning info for the given 1539 * peer. 1540 */ 1541 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1542 1543 1544 /* Event notifications from lower layer driver operations */ 1545 1546 /** 1547 * enum p2p_probe_req_status 1548 * 1549 * @P2P_PREQ_MALFORMED: frame was not well-formed 1550 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1551 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1552 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1553 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1554 */ 1555 enum p2p_probe_req_status { 1556 P2P_PREQ_MALFORMED, 1557 P2P_PREQ_NOT_LISTEN, 1558 P2P_PREQ_NOT_P2P, 1559 P2P_PREQ_NOT_PROCESSED, 1560 P2P_PREQ_PROCESSED 1561 }; 1562 1563 /** 1564 * p2p_probe_req_rx - Report reception of a Probe Request frame 1565 * @p2p: P2P module context from p2p_init() 1566 * @addr: Source MAC address 1567 * @dst: Destination MAC address if available or %NULL 1568 * @bssid: BSSID if available or %NULL 1569 * @ie: Information elements from the Probe Request frame body 1570 * @ie_len: Length of ie buffer in octets 1571 * @rx_freq: Probe Request frame RX frequency 1572 * @p2p_lo_started: Whether P2P Listen Offload is started 1573 * Returns: value indicating the type and status of the probe request 1574 */ 1575 enum p2p_probe_req_status 1576 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1577 const u8 *bssid, const u8 *ie, size_t ie_len, 1578 unsigned int rx_freq, int p2p_lo_started); 1579 1580 /** 1581 * p2p_rx_action - Report received Action frame 1582 * @p2p: P2P module context from p2p_init() 1583 * @da: Destination address of the received Action frame 1584 * @sa: Source address of the received Action frame 1585 * @bssid: Address 3 of the received Action frame 1586 * @category: Category of the received Action frame 1587 * @data: Action frame body after the Category field 1588 * @len: Length of the data buffer in octets 1589 * @freq: Frequency (in MHz) on which the frame was received 1590 */ 1591 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1592 const u8 *bssid, u8 category, 1593 const u8 *data, size_t len, int freq); 1594 1595 /** 1596 * p2p_scan_res_handler - Indicate a P2P scan results 1597 * @p2p: P2P module context from p2p_init() 1598 * @bssid: BSSID of the scan result 1599 * @freq: Frequency of the channel on which the device was found in MHz 1600 * @rx_time: Time when the result was received 1601 * @level: Signal level (signal strength of the received Beacon/Probe Response 1602 * frame) 1603 * @ies: Pointer to IEs from the scan result 1604 * @ies_len: Length of the ies buffer 1605 * Returns: 0 to continue or 1 to stop scan result indication 1606 * 1607 * This function is called to indicate a scan result entry with P2P IE from a 1608 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1609 * the actual scan process (i.e., whenever a new device is found) or as a 1610 * sequence of calls after the full scan has been completed. The former option 1611 * can result in optimized operations, but may not be supported by all 1612 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1613 * but it is recommended to include all IEs received from the device. The 1614 * caller does not need to check that the IEs contain a P2P IE before calling 1615 * this function since frames will be filtered internally if needed. 1616 * 1617 * This function will return 1 if it wants to stop scan result iteration (and 1618 * scan in general if it is still in progress). This is used to allow faster 1619 * start of a pending operation, e.g., to start a pending GO negotiation. 1620 */ 1621 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1622 struct os_reltime *rx_time, int level, const u8 *ies, 1623 size_t ies_len); 1624 1625 /** 1626 * p2p_scan_res_handled - Indicate end of scan results 1627 * @p2p: P2P module context from p2p_init() 1628 * @delay: Search delay for next scan in ms 1629 * 1630 * This function is called to indicate that all P2P scan results from a scan 1631 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1632 * function must be called as a response to successful 1633 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1634 * calls stopped iteration. 1635 */ 1636 void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay); 1637 1638 enum p2p_send_action_result { 1639 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1640 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1641 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1642 }; 1643 1644 /** 1645 * p2p_send_action_cb - Notify TX status of an Action frame 1646 * @p2p: P2P module context from p2p_init() 1647 * @freq: Channel frequency in MHz 1648 * @dst: Destination MAC address (Address 1) 1649 * @src: Source MAC address (Address 2) 1650 * @bssid: BSSID (Address 3) 1651 * @result: Result of the transmission attempt 1652 * 1653 * This function is used to indicate the result of an Action frame transmission 1654 * that was requested with struct p2p_config::send_action() callback. 1655 */ 1656 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1657 const u8 *src, const u8 *bssid, 1658 enum p2p_send_action_result result); 1659 1660 /** 1661 * p2p_listen_cb - Indicate the start of a requested Listen state 1662 * @p2p: P2P module context from p2p_init() 1663 * @freq: Listen channel frequency in MHz 1664 * @duration: Duration for the Listen state in milliseconds 1665 * 1666 * This function is used to indicate that a Listen state requested with 1667 * struct p2p_config::start_listen() callback has started. 1668 */ 1669 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1670 unsigned int duration); 1671 1672 /** 1673 * p2p_listen_end - Indicate the end of a requested Listen state 1674 * @p2p: P2P module context from p2p_init() 1675 * @freq: Listen channel frequency in MHz 1676 * Returns: 0 if no operations were started, 1 if an operation was started 1677 * 1678 * This function is used to indicate that a Listen state requested with 1679 * struct p2p_config::start_listen() callback has ended. 1680 */ 1681 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1682 1683 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1684 const u8 *ie, size_t ie_len); 1685 1686 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1687 const u8 *ie, size_t ie_len); 1688 1689 1690 /* Per-group P2P state for GO */ 1691 1692 struct p2p_group; 1693 1694 /** 1695 * struct p2p_group_config - P2P group configuration 1696 * 1697 * This configuration is provided to the P2P module during initialization of 1698 * the per-group information with p2p_group_init(). 1699 */ 1700 struct p2p_group_config { 1701 /** 1702 * persistent_group - Whether the group is persistent 1703 * 0 = not a persistent group 1704 * 1 = persistent group without persistent reconnect 1705 * 2 = persistent group with persistent reconnect 1706 */ 1707 int persistent_group; 1708 1709 /** 1710 * interface_addr - P2P Interface Address of the group 1711 */ 1712 u8 interface_addr[ETH_ALEN]; 1713 1714 /** 1715 * max_clients - Maximum number of clients in the group 1716 */ 1717 unsigned int max_clients; 1718 1719 /** 1720 * ssid - Group SSID 1721 */ 1722 u8 ssid[SSID_MAX_LEN]; 1723 1724 /** 1725 * ssid_len - Length of SSID 1726 */ 1727 size_t ssid_len; 1728 1729 /** 1730 * freq - Operating channel of the group 1731 */ 1732 int freq; 1733 1734 /** 1735 * ip_addr_alloc - Whether IP address allocation within 4-way handshake 1736 * is supported 1737 */ 1738 int ip_addr_alloc; 1739 1740 /** 1741 * cb_ctx - Context to use with callback functions 1742 */ 1743 void *cb_ctx; 1744 1745 /** 1746 * ie_update - Notification of IE update 1747 * @ctx: Callback context from cb_ctx 1748 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1749 * @proberesp_ies: P2P Ie for Probe Response frames 1750 * 1751 * P2P module uses this callback function to notify whenever the P2P IE 1752 * in Beacon or Probe Response frames should be updated based on group 1753 * events. 1754 * 1755 * The callee is responsible for freeing the returned buffer(s) with 1756 * wpabuf_free(). 1757 */ 1758 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1759 struct wpabuf *proberesp_ies); 1760 1761 /** 1762 * idle_update - Notification of changes in group idle state 1763 * @ctx: Callback context from cb_ctx 1764 * @idle: Whether the group is idle (no associated stations) 1765 */ 1766 void (*idle_update)(void *ctx, int idle); 1767 }; 1768 1769 /** 1770 * p2p_group_init - Initialize P2P group 1771 * @p2p: P2P module context from p2p_init() 1772 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1773 * Returns: Pointer to private data or %NULL on failure 1774 * 1775 * This function is used to initialize per-group P2P module context. Currently, 1776 * this is only used to manage GO functionality and P2P clients do not need to 1777 * create an instance of this per-group information. 1778 */ 1779 struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1780 struct p2p_group_config *config); 1781 1782 /** 1783 * p2p_group_deinit - Deinitialize P2P group 1784 * @group: P2P group context from p2p_group_init() 1785 */ 1786 void p2p_group_deinit(struct p2p_group *group); 1787 1788 /** 1789 * p2p_group_notif_assoc - Notification of P2P client association with GO 1790 * @group: P2P group context from p2p_group_init() 1791 * @addr: Interface address of the P2P client 1792 * @ie: IEs from the (Re)association Request frame 1793 * @len: Length of the ie buffer in octets 1794 * Returns: 0 on success, -1 on failure 1795 */ 1796 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1797 const u8 *ie, size_t len); 1798 1799 /** 1800 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1801 * @group: P2P group context from p2p_group_init() 1802 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1803 * Returns: P2P IE for (Re)association Response or %NULL on failure 1804 * 1805 * The caller is responsible for freeing the returned buffer with 1806 * wpabuf_free(). 1807 */ 1808 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1809 1810 /** 1811 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1812 * @group: P2P group context from p2p_group_init() 1813 * @addr: Interface address of the P2P client 1814 */ 1815 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1816 1817 /** 1818 * p2p_group_notif_formation_done - Notification of completed group formation 1819 * @group: P2P group context from p2p_group_init() 1820 */ 1821 void p2p_group_notif_formation_done(struct p2p_group *group); 1822 1823 /** 1824 * p2p_group_notif_noa - Notification of NoA change 1825 * @group: P2P group context from p2p_group_init() 1826 * @noa: Notice of Absence attribute payload, %NULL if none 1827 * @noa_len: Length of noa buffer in octets 1828 * Returns: 0 on success, -1 on failure 1829 * 1830 * Notify the P2P group management about a new NoA contents. This will be 1831 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1832 * the group information. 1833 */ 1834 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1835 size_t noa_len); 1836 1837 /** 1838 * p2p_group_match_dev_type - Match device types in group with requested type 1839 * @group: P2P group context from p2p_group_init() 1840 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1841 * Returns: 1 on match, 0 on mismatch 1842 * 1843 * This function can be used to match the Requested Device Type attribute in 1844 * WPS IE with the device types of a group member for deciding whether a GO 1845 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1846 * is not requested any specific device type. 1847 */ 1848 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1849 1850 /** 1851 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1852 */ 1853 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1854 1855 /** 1856 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1857 * @group: P2P group context from p2p_group_init() 1858 * Returns: 0 on success (frame scheduled); -1 if client was not found 1859 */ 1860 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1861 const u8 *searching_dev, int rx_freq); 1862 1863 1864 /* Generic helper functions */ 1865 1866 /** 1867 * p2p_ie_text - Build text format description of P2P IE 1868 * @p2p_ie: P2P IE 1869 * @buf: Buffer for returning text 1870 * @end: Pointer to the end of the buf area 1871 * Returns: Number of octets written to the buffer or -1 on failure 1872 * 1873 * This function can be used to parse P2P IE contents into text format 1874 * field=value lines. 1875 */ 1876 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1877 1878 /** 1879 * p2p_scan_result_text - Build text format description of P2P IE 1880 * @ies: Information elements from scan results 1881 * @ies_len: ies buffer length in octets 1882 * @buf: Buffer for returning text 1883 * @end: Pointer to the end of the buf area 1884 * Returns: Number of octets written to the buffer or -1 on failure 1885 * 1886 * This function can be used to parse P2P IE contents into text format 1887 * field=value lines. 1888 */ 1889 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1890 1891 /** 1892 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1893 * P2P IE 1894 * @p2p_ie: P2P IE 1895 * @dev_addr: Buffer for returning P2P Device Address 1896 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1897 */ 1898 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1899 1900 /** 1901 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1902 * @ies: Information elements from scan results 1903 * @ies_len: ies buffer length in octets 1904 * @dev_addr: Buffer for returning P2P Device Address 1905 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1906 */ 1907 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1908 1909 /** 1910 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1911 * @p2p: P2P module context from p2p_init() 1912 * @bssid: BSSID 1913 * @buf: Buffer for writing the P2P IE 1914 * @len: Maximum buf length in octets 1915 * @p2p_group: Whether this is for association with a P2P GO 1916 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1917 * Returns: Number of octets written into buf or -1 on failure 1918 */ 1919 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1920 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1921 1922 /** 1923 * p2p_scan_ie - Build P2P IE for Probe Request 1924 * @p2p: P2P module context from p2p_init() 1925 * @ies: Buffer for writing P2P IE 1926 * @dev_id: Device ID to search for or %NULL for any 1927 * @bands: Frequency bands used in the scan (enum wpa_radio_work_band bitmap) 1928 */ 1929 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id, 1930 unsigned int bands); 1931 1932 /** 1933 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1934 * @p2p: P2P module context from p2p_init() 1935 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1936 */ 1937 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1938 1939 /** 1940 * p2p_go_params - Generate random P2P group parameters 1941 * @p2p: P2P module context from p2p_init() 1942 * @params: Buffer for parameters 1943 * Returns: 0 on success, -1 on failure 1944 */ 1945 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1946 1947 /** 1948 * p2p_get_group_capab - Get Group Capability from P2P IE data 1949 * @p2p_ie: P2P IE(s) contents 1950 * Returns: Group Capability 1951 */ 1952 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1953 1954 /** 1955 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1956 * @p2p_ie: P2P IE(s) contents 1957 * Returns: 0 if cross connection is allow, 1 if not 1958 */ 1959 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1960 1961 /** 1962 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1963 * @p2p_ie: P2P IE(s) contents 1964 * Returns: Pointer to P2P Device Address or %NULL if not included 1965 */ 1966 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1967 1968 /** 1969 * p2p_get_peer_info - Get P2P peer information 1970 * @p2p: P2P module context from p2p_init() 1971 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1972 * @next: Whether to select the peer entry following the one indicated by addr 1973 * Returns: Pointer to peer info or %NULL if not found 1974 */ 1975 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1976 const u8 *addr, int next); 1977 1978 /** 1979 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1980 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1981 * @buf: Buffer for returning text 1982 * @buflen: Maximum buffer length 1983 * Returns: Number of octets written to the buffer or -1 on failure 1984 * 1985 * Note: This information is internal to the P2P module and subject to change. 1986 * As such, this should not really be used by external programs for purposes 1987 * other than debugging. 1988 */ 1989 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1990 char *buf, size_t buflen); 1991 1992 /** 1993 * p2p_peer_known - Check whether P2P peer is known 1994 * @p2p: P2P module context from p2p_init() 1995 * @addr: P2P Device Address of the peer 1996 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1997 */ 1998 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1999 2000 /** 2001 * p2p_set_client_discoverability - Set client discoverability capability 2002 * @p2p: P2P module context from p2p_init() 2003 * @enabled: Whether client discoverability will be enabled 2004 * 2005 * This function can be used to disable (and re-enable) client discoverability. 2006 * This capability is enabled by default and should not be disabled in normal 2007 * use cases, i.e., this is mainly for testing purposes. 2008 */ 2009 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 2010 2011 /** 2012 * p2p_set_managed_oper - Set managed P2P Device operations capability 2013 * @p2p: P2P module context from p2p_init() 2014 * @enabled: Whether managed P2P Device operations will be enabled 2015 */ 2016 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 2017 2018 /** 2019 * p2p_config_get_random_social - Return a random social channel 2020 * @p2p: P2P config 2021 * @op_class: Selected operating class 2022 * @op_channel: Selected social channel 2023 * @avoid_list: Channel ranges to try to avoid or %NULL 2024 * @disallow_list: Channel ranges to discard or %NULL 2025 * Returns: 0 on success, -1 on failure 2026 * 2027 * This function is used before p2p_init is called. A random social channel 2028 * from supports bands 2.4 GHz (channels 1,6,11) and 60 GHz (channel 2) is 2029 * returned on success. 2030 */ 2031 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class, 2032 u8 *op_channel, 2033 struct wpa_freq_range_list *avoid_list, 2034 struct wpa_freq_range_list *disallow_list); 2035 2036 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel, 2037 u8 forced); 2038 2039 u8 p2p_get_listen_channel(struct p2p_data *p2p); 2040 2041 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 2042 2043 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 2044 u8 *iface_addr); 2045 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 2046 u8 *dev_addr); 2047 2048 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 2049 2050 /** 2051 * p2p_set_cross_connect - Set cross connection capability 2052 * @p2p: P2P module context from p2p_init() 2053 * @enabled: Whether cross connection will be enabled 2054 */ 2055 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 2056 2057 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 2058 2059 /** 2060 * p2p_set_intra_bss_dist - Set intra BSS distribution 2061 * @p2p: P2P module context from p2p_init() 2062 * @enabled: Whether intra BSS distribution will be enabled 2063 */ 2064 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 2065 2066 int p2p_channels_includes_freq(const struct p2p_channels *channels, 2067 unsigned int freq); 2068 2069 int p2p_channels_to_freqs(const struct p2p_channels *channels, 2070 int *freq_list, unsigned int max_len); 2071 2072 /** 2073 * p2p_supported_freq - Check whether channel is supported for P2P 2074 * @p2p: P2P module context from p2p_init() 2075 * @freq: Channel frequency in MHz 2076 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 2077 */ 2078 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 2079 2080 /** 2081 * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation 2082 * @p2p: P2P module context from p2p_init() 2083 * @freq: Channel frequency in MHz 2084 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 2085 */ 2086 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq); 2087 2088 /** 2089 * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation 2090 * @p2p: P2P module context from p2p_init() 2091 * @freq: Channel frequency in MHz 2092 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 2093 */ 2094 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq); 2095 2096 /** 2097 * p2p_get_pref_freq - Get channel from preferred channel list 2098 * @p2p: P2P module context from p2p_init() 2099 * @channels: List of channels 2100 * Returns: Preferred channel 2101 */ 2102 unsigned int p2p_get_pref_freq(struct p2p_data *p2p, 2103 const struct p2p_channels *channels); 2104 2105 void p2p_update_channel_list(struct p2p_data *p2p, 2106 const struct p2p_channels *chan, 2107 const struct p2p_channels *cli_chan); 2108 2109 bool is_p2p_6ghz_disabled(struct p2p_data *p2p); 2110 2111 /** 2112 * p2p_set_best_channels - Update best channel information 2113 * @p2p: P2P module context from p2p_init() 2114 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 2115 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 2116 * @freq_overall: Frequency (MHz) of best channel overall 2117 */ 2118 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 2119 int freq_overall); 2120 2121 /** 2122 * p2p_set_own_freq_preference - Set own preference for channel 2123 * @p2p: P2P module context from p2p_init() 2124 * @freq: Frequency (MHz) of the preferred channel or 0 if no preference 2125 * 2126 * This function can be used to set a preference on the operating channel based 2127 * on frequencies used on the other virtual interfaces that share the same 2128 * radio. If non-zero, this is used to try to avoid multi-channel concurrency. 2129 */ 2130 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq); 2131 2132 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 2133 2134 /** 2135 * p2p_get_group_num_members - Get number of members in group 2136 * @group: P2P group context from p2p_group_init() 2137 * Returns: Number of members in the group 2138 */ 2139 unsigned int p2p_get_group_num_members(struct p2p_group *group); 2140 2141 /** 2142 * p2p_client_limit_reached - Check if client limit is reached 2143 * @group: P2P group context from p2p_group_init() 2144 * Returns: 1 if no of clients limit reached 2145 */ 2146 int p2p_client_limit_reached(struct p2p_group *group); 2147 2148 /** 2149 * p2p_iterate_group_members - Iterate group members 2150 * @group: P2P group context from p2p_group_init() 2151 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 2152 * on the first call and not modified later 2153 * Returns: A P2P Device Address for each call and %NULL for no more members 2154 */ 2155 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 2156 2157 /** 2158 * p2p_group_get_client_interface_addr - Get P2P Interface Address of a client in a group 2159 * @group: P2P group context from p2p_group_init() 2160 * @dev_addr: P2P Device Address of the client 2161 * Returns: P2P Interface Address of the client if found or %NULL if no match 2162 * found 2163 */ 2164 const u8 * p2p_group_get_client_interface_addr(struct p2p_group *group, 2165 const u8 *dev_addr); 2166 2167 /** 2168 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 2169 * @group: P2P group context from p2p_group_init() 2170 * @addr: P2P Interface Address of the client 2171 * Returns: P2P Device Address of the client if found or %NULL if no match 2172 * found 2173 */ 2174 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 2175 2176 /** 2177 * p2p_group_is_client_connected - Check whether a specific client is connected 2178 * @group: P2P group context from p2p_group_init() 2179 * @addr: P2P Device Address of the client 2180 * Returns: 1 if client is connected or 0 if not 2181 */ 2182 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 2183 2184 /** 2185 * p2p_group_get_config - Get the group configuration 2186 * @group: P2P group context from p2p_group_init() 2187 * Returns: The group configuration pointer 2188 */ 2189 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group); 2190 2191 /** 2192 * p2p_loop_on_all_groups - Run the given callback on all groups 2193 * @p2p: P2P module context from p2p_init() 2194 * @group_callback: The callback function pointer 2195 * @user_data: Some user data pointer which can be %NULL 2196 * 2197 * The group_callback function can stop the iteration by returning 0. 2198 */ 2199 void p2p_loop_on_all_groups(struct p2p_data *p2p, 2200 int (*group_callback)(struct p2p_group *group, 2201 void *user_data), 2202 void *user_data); 2203 2204 /** 2205 * p2p_get_peer_found - Get P2P peer info structure of a found peer 2206 * @p2p: P2P module context from p2p_init() 2207 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 2208 * @next: Whether to select the peer entry following the one indicated by addr 2209 * Returns: The first P2P peer info available or %NULL if no such peer exists 2210 */ 2211 const struct p2p_peer_info * 2212 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 2213 2214 /** 2215 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 2216 * @p2p: P2P module context from p2p_init() 2217 */ 2218 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 2219 2220 /** 2221 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 2222 * @p2p: P2P module context from p2p_init() 2223 * @vendor_ext: The vendor extensions to add 2224 * Returns: 0 on success, -1 on failure 2225 * 2226 * The wpabuf structures in the array are owned by the P2P 2227 * module after this call. 2228 */ 2229 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 2230 const struct wpabuf *vendor_ext); 2231 2232 /** 2233 * p2p_set_oper_channel - Set the P2P operating channel 2234 * @p2p: P2P module context from p2p_init() 2235 * @op_reg_class: Operating regulatory class to set 2236 * @op_channel: operating channel to set 2237 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 2238 * Returns: 0 on success, -1 on failure 2239 */ 2240 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 2241 int cfg_op_channel); 2242 2243 /** 2244 * p2p_set_pref_chan - Set P2P preferred channel list 2245 * @p2p: P2P module context from p2p_init() 2246 * @num_pref_chan: Number of entries in pref_chan list 2247 * @pref_chan: Preferred channels or %NULL to remove preferences 2248 * Returns: 0 on success, -1 on failure 2249 */ 2250 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 2251 const struct p2p_channel *pref_chan); 2252 2253 /** 2254 * p2p_set_no_go_freq - Set no GO channel ranges 2255 * @p2p: P2P module context from p2p_init() 2256 * @list: Channel ranges or %NULL to remove restriction 2257 * Returns: 0 on success, -1 on failure 2258 */ 2259 int p2p_set_no_go_freq(struct p2p_data *p2p, 2260 const struct wpa_freq_range_list *list); 2261 2262 /** 2263 * p2p_in_progress - Check whether a P2P operation is progress 2264 * @p2p: P2P module context from p2p_init() 2265 * Returns: 0 if P2P module is idle, 1 if an operation is in progress but not 2266 * in search state, or 2 if search state operation is in progress 2267 */ 2268 int p2p_in_progress(struct p2p_data *p2p); 2269 2270 const char * p2p_wps_method_text(enum p2p_wps_method method); 2271 2272 /** 2273 * p2p_set_config_timeout - Set local config timeouts 2274 * @p2p: P2P module context from p2p_init() 2275 * @go_timeout: Time in 10 ms units it takes to start the GO mode 2276 * @client_timeout: Time in 10 ms units it takes to start the client mode 2277 */ 2278 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 2279 u8 client_timeout); 2280 2281 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 2282 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 2283 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 2284 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 2285 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 2286 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 2287 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 2288 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 2289 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 2290 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 2291 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 2292 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 2293 const struct wpabuf *elem); 2294 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 2295 2296 /** 2297 * p2p_set_disc_int - Set min/max discoverable interval for p2p_find 2298 * @p2p: P2P module context from p2p_init() 2299 * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1 2300 * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3 2301 * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or 2302 * -1 not to limit 2303 * Returns: 0 on success, or -1 on failure 2304 * 2305 * This function can be used to configure minDiscoverableInterval and 2306 * maxDiscoverableInterval parameters for the Listen state during device 2307 * discovery (p2p_find). A random number of 100 TU units is picked for each 2308 * Listen state iteration from [min_disc_int,max_disc_int] range. 2309 * 2310 * max_disc_tu can be used to further limit the discoverable duration. However, 2311 * it should be noted that use of this parameter is not recommended since it 2312 * would not be compliant with the P2P specification. 2313 */ 2314 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 2315 int max_disc_tu); 2316 2317 /** 2318 * p2p_get_state_txt - Get current P2P state for debug purposes 2319 * @p2p: P2P module context from p2p_init() 2320 * Returns: Name of the current P2P module state 2321 * 2322 * It should be noted that the P2P module state names are internal information 2323 * and subject to change at any point, i.e., this information should be used 2324 * mainly for debugging purposes. 2325 */ 2326 const char * p2p_get_state_txt(struct p2p_data *p2p); 2327 2328 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p, 2329 int client_freq, 2330 const u8 *go_dev_addr, 2331 const u8 *ssid, size_t ssid_len); 2332 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p, 2333 int client_freq, 2334 const u8 *go_dev_addr, 2335 const u8 *ssid, size_t ssid_len); 2336 2337 struct p2p_nfc_params { 2338 int sel; 2339 const u8 *wsc_attr; 2340 size_t wsc_len; 2341 const u8 *p2p_attr; 2342 size_t p2p_len; 2343 2344 enum { 2345 NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG, 2346 BOTH_GO, PEER_CLIENT 2347 } next_step; 2348 struct p2p_peer_info *peer; 2349 u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 + 2350 WPS_OOB_DEVICE_PASSWORD_LEN]; 2351 size_t oob_dev_pw_len; 2352 int go_freq; 2353 u8 go_dev_addr[ETH_ALEN]; 2354 u8 go_ssid[SSID_MAX_LEN]; 2355 size_t go_ssid_len; 2356 }; 2357 2358 int p2p_process_nfc_connection_handover(struct p2p_data *p2p, 2359 struct p2p_nfc_params *params); 2360 2361 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id, 2362 int go_intent, 2363 const u8 *own_interface_addr); 2364 2365 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len); 2366 2367 void p2p_loop_on_known_peers(struct p2p_data *p2p, 2368 void (*peer_callback)(struct p2p_peer_info *peer, 2369 void *user_data), 2370 void *user_data); 2371 2372 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem); 2373 2374 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr); 2375 2376 struct p2ps_advertisement * 2377 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id); 2378 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id, 2379 const char *adv_str, u8 svc_state, 2380 u16 config_methods, const char *svc_info, 2381 const u8 *cpt_priority); 2382 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id); 2383 void p2p_service_flush_asp(struct p2p_data *p2p); 2384 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p); 2385 2386 /** 2387 * p2p_expire_peers - Periodic cleanup function to expire peers 2388 * @p2p: P2P module context from p2p_init() 2389 * 2390 * This is a cleanup function that the entity calling p2p_init() is 2391 * expected to call periodically to clean up expired peer entries. 2392 */ 2393 void p2p_expire_peers(struct p2p_data *p2p); 2394 2395 void p2p_set_own_pref_freq_list(struct p2p_data *p2p, 2396 const unsigned int *pref_freq_list, 2397 unsigned int size); 2398 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class, 2399 u8 chan); 2400 2401 /** 2402 * p2p_group_get_common_freqs - Get the group common frequencies 2403 * @group: P2P group context from p2p_group_init() 2404 * @common_freqs: On return will hold the group common frequencies 2405 * @num: On return will hold the number of group common frequencies 2406 * Returns: 0 on success, -1 otherwise 2407 */ 2408 int p2p_group_get_common_freqs(struct p2p_group *group, int *common_freqs, 2409 unsigned int *num); 2410 2411 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p, 2412 unsigned int freq); 2413 2414 #endif /* P2P_H */ 2415