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