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