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 /** 13 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 14 */ 15 #define P2P_MAX_REG_CLASSES 10 16 17 /** 18 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 19 */ 20 #define P2P_MAX_REG_CLASS_CHANNELS 20 21 22 /** 23 * struct p2p_channels - List of supported channels 24 */ 25 struct p2p_channels { 26 /** 27 * struct p2p_reg_class - Supported regulatory class 28 */ 29 struct p2p_reg_class { 30 /** 31 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 32 */ 33 u8 reg_class; 34 35 /** 36 * channel - Supported channels 37 */ 38 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 39 40 /** 41 * channels - Number of channel entries in use 42 */ 43 size_t channels; 44 } reg_class[P2P_MAX_REG_CLASSES]; 45 46 /** 47 * reg_classes - Number of reg_class entries in use 48 */ 49 size_t reg_classes; 50 }; 51 52 enum p2p_wps_method { 53 WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC 54 }; 55 56 enum p2p_sd_action { 57 SRV_UPDATE, SRV_ADD, SRV_DEL, SRV_FLUSH 58 }; 59 60 /** 61 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 62 */ 63 struct p2p_go_neg_results { 64 /** 65 * status - Negotiation result (Status Code) 66 * 67 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 68 * failed negotiation. 69 */ 70 int status; 71 72 /** 73 * role_go - Whether local end is Group Owner 74 */ 75 int role_go; 76 77 /** 78 * freq - Frequency of the group operational channel in MHz 79 */ 80 int freq; 81 82 int ht40; 83 84 /** 85 * ssid - SSID of the group 86 */ 87 u8 ssid[32]; 88 89 /** 90 * ssid_len - Length of SSID in octets 91 */ 92 size_t ssid_len; 93 94 /** 95 * passphrase - WPA2-Personal passphrase for the group (GO only) 96 */ 97 char passphrase[64]; 98 99 /** 100 * peer_device_addr - P2P Device Address of the peer 101 */ 102 u8 peer_device_addr[ETH_ALEN]; 103 104 /** 105 * peer_interface_addr - P2P Interface Address of the peer 106 */ 107 u8 peer_interface_addr[ETH_ALEN]; 108 109 /** 110 * wps_method - WPS method to be used during provisioning 111 */ 112 enum p2p_wps_method wps_method; 113 114 #define P2P_MAX_CHANNELS 50 115 116 /** 117 * freq_list - Zero-terminated list of possible operational channels 118 */ 119 int freq_list[P2P_MAX_CHANNELS]; 120 121 /** 122 * persistent_group - Whether the group should be made persistent 123 * 0 = not persistent 124 * 1 = persistent group without persistent reconnect 125 * 2 = persistent group with persistent reconnect 126 */ 127 int persistent_group; 128 129 /** 130 * peer_config_timeout - Peer configuration timeout (in 10 msec units) 131 */ 132 unsigned int peer_config_timeout; 133 }; 134 135 struct p2p_data; 136 137 enum p2p_scan_type { 138 P2P_SCAN_SOCIAL, 139 P2P_SCAN_FULL, 140 P2P_SCAN_SPECIFIC, 141 P2P_SCAN_SOCIAL_PLUS_ONE 142 }; 143 144 #define P2P_MAX_WPS_VENDOR_EXT 10 145 146 /** 147 * struct p2p_peer_info - P2P peer information 148 */ 149 struct p2p_peer_info { 150 /** 151 * p2p_device_addr - P2P Device Address of the peer 152 */ 153 u8 p2p_device_addr[ETH_ALEN]; 154 155 /** 156 * pri_dev_type - Primary Device Type 157 */ 158 u8 pri_dev_type[8]; 159 160 /** 161 * device_name - Device Name (0..32 octets encoded in UTF-8) 162 */ 163 char device_name[33]; 164 165 /** 166 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 167 */ 168 char manufacturer[65]; 169 170 /** 171 * model_name - Model Name (0..32 octets encoded in UTF-8) 172 */ 173 char model_name[33]; 174 175 /** 176 * model_number - Model Number (0..32 octets encoded in UTF-8) 177 */ 178 char model_number[33]; 179 180 /** 181 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 182 */ 183 char serial_number[33]; 184 185 /** 186 * level - Signal level 187 */ 188 int level; 189 190 /** 191 * config_methods - WPS Configuration Methods 192 */ 193 u16 config_methods; 194 195 /** 196 * dev_capab - Device Capabilities 197 */ 198 u8 dev_capab; 199 200 /** 201 * group_capab - Group Capabilities 202 */ 203 u8 group_capab; 204 205 /** 206 * wps_sec_dev_type_list - WPS secondary device type list 207 * 208 * This list includes from 0 to 16 Secondary Device Types as indicated 209 * by wps_sec_dev_type_list_len (8 * number of types). 210 */ 211 u8 wps_sec_dev_type_list[128]; 212 213 /** 214 * wps_sec_dev_type_list_len - Length of secondary device type list 215 */ 216 size_t wps_sec_dev_type_list_len; 217 218 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 219 220 /** 221 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s) 222 */ 223 struct wpabuf *wfd_subelems; 224 }; 225 226 enum p2p_prov_disc_status { 227 P2P_PROV_DISC_SUCCESS, 228 P2P_PROV_DISC_TIMEOUT, 229 P2P_PROV_DISC_REJECTED, 230 }; 231 232 struct p2p_channel { 233 u8 op_class; 234 u8 chan; 235 }; 236 237 /** 238 * struct p2p_config - P2P configuration 239 * 240 * This configuration is provided to the P2P module during initialization with 241 * p2p_init(). 242 */ 243 struct p2p_config { 244 /** 245 * country - Country code to use in P2P operations 246 */ 247 char country[3]; 248 249 /** 250 * reg_class - Regulatory class for own listen channel 251 */ 252 u8 reg_class; 253 254 /** 255 * channel - Own listen channel 256 */ 257 u8 channel; 258 259 /** 260 * Regulatory class for own operational channel 261 */ 262 u8 op_reg_class; 263 264 /** 265 * op_channel - Own operational channel 266 */ 267 u8 op_channel; 268 269 /** 270 * cfg_op_channel - Whether op_channel is hardcoded in configuration 271 */ 272 u8 cfg_op_channel; 273 274 /** 275 * channels - Own supported regulatory classes and channels 276 * 277 * List of supposerted channels per regulatory class. The regulatory 278 * classes are defined in IEEE Std 802.11-2007 Annex J and the 279 * numbering of the clases depends on the configured country code. 280 */ 281 struct p2p_channels channels; 282 283 /** 284 * num_pref_chan - Number of pref_chan entries 285 */ 286 unsigned int num_pref_chan; 287 288 /** 289 * pref_chan - Preferred channels for GO Negotiation 290 */ 291 struct p2p_channel *pref_chan; 292 293 /** 294 * pri_dev_type - Primary Device Type (see WPS) 295 */ 296 u8 pri_dev_type[8]; 297 298 /** 299 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 300 */ 301 #define P2P_SEC_DEVICE_TYPES 5 302 303 /** 304 * sec_dev_type - Optional secondary device types 305 */ 306 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 307 308 /** 309 * num_sec_dev_types - Number of sec_dev_type entries 310 */ 311 size_t num_sec_dev_types; 312 313 /** 314 * dev_addr - P2P Device Address 315 */ 316 u8 dev_addr[ETH_ALEN]; 317 318 /** 319 * dev_name - Device Name 320 */ 321 char *dev_name; 322 323 char *manufacturer; 324 char *model_name; 325 char *model_number; 326 char *serial_number; 327 328 u8 uuid[16]; 329 u16 config_methods; 330 331 /** 332 * concurrent_operations - Whether concurrent operations are supported 333 */ 334 int concurrent_operations; 335 336 /** 337 * max_peers - Maximum number of discovered peers to remember 338 * 339 * If more peers are discovered, older entries will be removed to make 340 * room for the new ones. 341 */ 342 size_t max_peers; 343 344 /** 345 * p2p_intra_bss - Intra BSS communication is supported 346 */ 347 int p2p_intra_bss; 348 349 /** 350 * ssid_postfix - Postfix data to add to the SSID 351 * 352 * This data will be added to the end of the SSID after the 353 * DIRECT-<random two octets> prefix. 354 */ 355 u8 ssid_postfix[32 - 9]; 356 357 /** 358 * ssid_postfix_len - Length of the ssid_postfix data 359 */ 360 size_t ssid_postfix_len; 361 362 #ifdef ANDROID_P2P 363 enum p2p_concurrency_type { 364 P2P_NON_CONCURRENT, 365 P2P_SINGLE_CHANNEL_CONCURRENT, 366 P2P_MULTI_CHANNEL_CONCURRENT, 367 } p2p_concurrency; 368 #endif 369 370 /** 371 * msg_ctx - Context to use with wpa_msg() calls 372 */ 373 void *msg_ctx; 374 375 /** 376 * cb_ctx - Context to use with callback functions 377 */ 378 void *cb_ctx; 379 380 381 /* Callbacks to request lower layer driver operations */ 382 383 /** 384 * p2p_scan - Request a P2P scan/search 385 * @ctx: Callback context from cb_ctx 386 * @type: Scan type 387 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 388 * @num_req_dev_types: Number of requested device types 389 * @req_dev_types: Array containing requested device types 390 * @dev_id: Device ID to search for or %NULL to find all devices 391 * @pw_id: Device Password ID 392 * Returns: 0 on success, -1 on failure 393 * 394 * This callback function is used to request a P2P scan or search 395 * operation to be completed. Type type argument specifies which type 396 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 397 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 398 * indicates that all channels are to be scanned. 399 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 400 * plus one extra channel specified by freq. 401 * 402 * The full scan is used for the initial scan to find group owners from 403 * all. The other types are used during search phase scan of the social 404 * channels (with potential variation if the Listen channel of the 405 * target peer is known or if other channels are scanned in steps). 406 * 407 * The scan results are returned after this call by calling 408 * p2p_scan_res_handler() for each scan result that has a P2P IE and 409 * then calling p2p_scan_res_handled() to indicate that all scan 410 * results have been indicated. 411 */ 412 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 413 unsigned int num_req_dev_types, 414 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id); 415 416 /** 417 * send_probe_resp - Transmit a Probe Response frame 418 * @ctx: Callback context from cb_ctx 419 * @buf: Probe Response frame (including the header and body) 420 * Returns: 0 on success, -1 on failure 421 * 422 * This function is used to reply to Probe Request frames that were 423 * indicated with a call to p2p_probe_req_rx(). The response is to be 424 * sent on the same channel or to be dropped if the driver is not 425 * anymore listening to Probe Request frames. 426 * 427 * Alternatively, the responsibility for building the Probe Response 428 * frames in Listen state may be in another system component in which 429 * case this function need to be implemented (i.e., the function 430 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 431 * Response frames in such a case are available from the 432 * start_listen() callback. It should be noted that the received Probe 433 * Request frames must be indicated by calling p2p_probe_req_rx() even 434 * if this send_probe_resp() is not used. 435 */ 436 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 437 438 /** 439 * send_action - Transmit an Action frame 440 * @ctx: Callback context from cb_ctx 441 * @freq: Frequency in MHz for the channel on which to transmit 442 * @dst: Destination MAC address (Address 1) 443 * @src: Source MAC address (Address 2) 444 * @bssid: BSSID (Address 3) 445 * @buf: Frame body (starting from Category field) 446 * @len: Length of buf in octets 447 * @wait_time: How many msec to wait for a response frame 448 * Returns: 0 on success, -1 on failure 449 * 450 * The Action frame may not be transmitted immediately and the status 451 * of the transmission must be reported by calling 452 * p2p_send_action_cb() once the frame has either been transmitted or 453 * it has been dropped due to excessive retries or other failure to 454 * transmit. 455 */ 456 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 457 const u8 *src, const u8 *bssid, const u8 *buf, 458 size_t len, unsigned int wait_time); 459 460 /** 461 * send_action_done - Notify that Action frame sequence was completed 462 * @ctx: Callback context from cb_ctx 463 * 464 * This function is called when the Action frame sequence that was 465 * started with send_action() has been completed, i.e., when there is 466 * no need to wait for a response from the destination peer anymore. 467 */ 468 void (*send_action_done)(void *ctx); 469 470 /** 471 * start_listen - Start Listen state 472 * @ctx: Callback context from cb_ctx 473 * @freq: Frequency of the listen channel in MHz 474 * @duration: Duration for the Listen state in milliseconds 475 * @probe_resp_ie: IE(s) to be added to Probe Response frames 476 * Returns: 0 on success, -1 on failure 477 * 478 * This Listen state may not start immediately since the driver may 479 * have other pending operations to complete first. Once the Listen 480 * state has started, p2p_listen_cb() must be called to notify the P2P 481 * module. Once the Listen state is stopped, p2p_listen_end() must be 482 * called to notify the P2P module that the driver is not in the Listen 483 * state anymore. 484 * 485 * If the send_probe_resp() is not used for generating the response, 486 * the IEs from probe_resp_ie need to be added to the end of the Probe 487 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 488 * information can be ignored. 489 */ 490 int (*start_listen)(void *ctx, unsigned int freq, 491 unsigned int duration, 492 const struct wpabuf *probe_resp_ie); 493 /** 494 * stop_listen - Stop Listen state 495 * @ctx: Callback context from cb_ctx 496 * 497 * This callback can be used to stop a Listen state operation that was 498 * previously requested with start_listen(). 499 */ 500 void (*stop_listen)(void *ctx); 501 502 /** 503 * get_noa - Get current Notice of Absence attribute payload 504 * @ctx: Callback context from cb_ctx 505 * @interface_addr: P2P Interface Address of the GO 506 * @buf: Buffer for returning NoA 507 * @buf_len: Buffer length in octets 508 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 509 * advertized, or -1 on failure 510 * 511 * This function is used to fetch the current Notice of Absence 512 * attribute value from GO. 513 */ 514 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 515 size_t buf_len); 516 517 /* Callbacks to notify events to upper layer management entity */ 518 519 /** 520 * dev_found - Notification of a found P2P Device 521 * @ctx: Callback context from cb_ctx 522 * @addr: Source address of the message triggering this notification 523 * @info: P2P peer information 524 * @new_device: Inform if the peer is newly found 525 * 526 * This callback is used to notify that a new P2P Device has been 527 * found. This may happen, e.g., during Search state based on scan 528 * results or during Listen state based on receive Probe Request and 529 * Group Owner Negotiation Request. 530 */ 531 void (*dev_found)(void *ctx, const u8 *addr, 532 const struct p2p_peer_info *info, 533 int new_device); 534 535 /** 536 * dev_lost - Notification of a lost P2P Device 537 * @ctx: Callback context from cb_ctx 538 * @dev_addr: P2P Device Address of the lost P2P Device 539 * 540 * This callback is used to notify that a P2P Device has been deleted. 541 */ 542 void (*dev_lost)(void *ctx, const u8 *dev_addr); 543 544 /** 545 * go_neg_req_rx - Notification of a receive GO Negotiation Request 546 * @ctx: Callback context from cb_ctx 547 * @src: Source address of the message triggering this notification 548 * @dev_passwd_id: WPS Device Password ID 549 * 550 * This callback is used to notify that a P2P Device is requesting 551 * group owner negotiation with us, but we do not have all the 552 * necessary information to start GO Negotiation. This indicates that 553 * the local user has not authorized the connection yet by providing a 554 * PIN or PBC button press. This information can be provided with a 555 * call to p2p_connect(). 556 */ 557 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 558 559 /** 560 * go_neg_completed - Notification of GO Negotiation results 561 * @ctx: Callback context from cb_ctx 562 * @res: GO Negotiation results 563 * 564 * This callback is used to notify that Group Owner Negotiation has 565 * been completed. Non-zero struct p2p_go_neg_results::status indicates 566 * failed negotiation. In case of success, this function is responsible 567 * for creating a new group interface (or using the existing interface 568 * depending on driver features), setting up the group interface in 569 * proper mode based on struct p2p_go_neg_results::role_go and 570 * initializing WPS provisioning either as a Registrar (if GO) or as an 571 * Enrollee. Successful WPS provisioning must be indicated by calling 572 * p2p_wps_success_cb(). The callee is responsible for timing out group 573 * formation if WPS provisioning cannot be completed successfully 574 * within 15 seconds. 575 */ 576 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 577 578 /** 579 * sd_request - Callback on Service Discovery Request 580 * @ctx: Callback context from cb_ctx 581 * @freq: Frequency (in MHz) of the channel 582 * @sa: Source address of the request 583 * @dialog_token: Dialog token 584 * @update_indic: Service Update Indicator from the source of request 585 * @tlvs: P2P Service Request TLV(s) 586 * @tlvs_len: Length of tlvs buffer in octets 587 * 588 * This callback is used to indicate reception of a service discovery 589 * request. Response to the query must be indicated by calling 590 * p2p_sd_response() with the context information from the arguments to 591 * this callback function. 592 * 593 * This callback handler can be set to %NULL to indicate that service 594 * discovery is not supported. 595 */ 596 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 597 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 598 599 /** 600 * sd_response - Callback on Service Discovery Response 601 * @ctx: Callback context from cb_ctx 602 * @sa: Source address of the request 603 * @update_indic: Service Update Indicator from the source of response 604 * @tlvs: P2P Service Response TLV(s) 605 * @tlvs_len: Length of tlvs buffer in octets 606 * 607 * This callback is used to indicate reception of a service discovery 608 * response. This callback handler can be set to %NULL if no service 609 * discovery requests are used. The information provided with this call 610 * is replies to the queries scheduled with p2p_sd_request(). 611 */ 612 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 613 const u8 *tlvs, size_t tlvs_len); 614 615 /** 616 * prov_disc_req - Callback on Provisiong Discovery Request 617 * @ctx: Callback context from cb_ctx 618 * @peer: Source address of the request 619 * @config_methods: Requested WPS Config Method 620 * @dev_addr: P2P Device Address of the found P2P Device 621 * @pri_dev_type: Primary Device Type 622 * @dev_name: Device Name 623 * @supp_config_methods: Supported configuration Methods 624 * @dev_capab: Device Capabilities 625 * @group_capab: Group Capabilities 626 * @group_id: P2P Group ID (or %NULL if not included) 627 * @group_id_len: Length of P2P Group ID 628 * 629 * This callback is used to indicate reception of a Provision Discovery 630 * Request frame that the P2P module accepted. 631 */ 632 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 633 const u8 *dev_addr, const u8 *pri_dev_type, 634 const char *dev_name, u16 supp_config_methods, 635 u8 dev_capab, u8 group_capab, 636 const u8 *group_id, size_t group_id_len); 637 638 /** 639 * prov_disc_resp - Callback on Provisiong Discovery Response 640 * @ctx: Callback context from cb_ctx 641 * @peer: Source address of the response 642 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 643 * 644 * This callback is used to indicate reception of a Provision Discovery 645 * Response frame for a pending request scheduled with 646 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 647 * provision discovery is not used. 648 */ 649 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 650 651 /** 652 * prov_disc_fail - Callback on Provision Discovery failure 653 * @ctx: Callback context from cb_ctx 654 * @peer: Source address of the response 655 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 656 * 657 * This callback is used to indicate either a failure or no response 658 * to an earlier provision discovery request. 659 * 660 * This callback handler can be set to %NULL if provision discovery 661 * is not used or failures do not need to be indicated. 662 */ 663 void (*prov_disc_fail)(void *ctx, const u8 *peer, 664 enum p2p_prov_disc_status status); 665 666 /** 667 * invitation_process - Optional callback for processing Invitations 668 * @ctx: Callback context from cb_ctx 669 * @sa: Source address of the Invitation Request 670 * @bssid: P2P Group BSSID from the request or %NULL if not included 671 * @go_dev_addr: GO Device Address from P2P Group ID 672 * @ssid: SSID from P2P Group ID 673 * @ssid_len: Length of ssid buffer in octets 674 * @go: Variable for returning whether the local end is GO in the group 675 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 676 * @force_freq: Variable for returning forced frequency for the group 677 * @persistent_group: Whether this is an invitation to reinvoke a 678 * persistent group (instead of invitation to join an active 679 * group) 680 * Returns: Status code (P2P_SC_*) 681 * 682 * This optional callback can be used to implement persistent reconnect 683 * by allowing automatic restarting of persistent groups without user 684 * interaction. If this callback is not implemented (i.e., is %NULL), 685 * the received Invitation Request frames are replied with 686 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 687 * invitation_result() callback. 688 * 689 * If the requested parameters are acceptable and the group is known, 690 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 691 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 692 * can be returned if there is not enough data to provide immediate 693 * response, i.e., if some sort of user interaction is needed. The 694 * invitation_received() callback will be called in that case 695 * immediately after this call. 696 */ 697 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 698 const u8 *go_dev_addr, const u8 *ssid, 699 size_t ssid_len, int *go, u8 *group_bssid, 700 int *force_freq, int persistent_group); 701 702 /** 703 * invitation_received - Callback on Invitation Request RX 704 * @ctx: Callback context from cb_ctx 705 * @sa: Source address of the Invitation Request 706 * @bssid: P2P Group BSSID or %NULL if not received 707 * @ssid: SSID of the group 708 * @ssid_len: Length of ssid in octets 709 * @go_dev_addr: GO Device Address 710 * @status: Response Status 711 * @op_freq: Operational frequency for the group 712 * 713 * This callback is used to indicate sending of an Invitation Response 714 * for a received Invitation Request. If status == 0 (success), the 715 * upper layer code is responsible for starting the group. status == 1 716 * indicates need to get user authorization for the group. Other status 717 * values indicate that the invitation request was rejected. 718 */ 719 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 720 const u8 *ssid, size_t ssid_len, 721 const u8 *go_dev_addr, u8 status, 722 int op_freq); 723 724 /** 725 * invitation_result - Callback on Invitation result 726 * @ctx: Callback context from cb_ctx 727 * @status: Negotiation result (Status Code) 728 * @bssid: P2P Group BSSID or %NULL if not received 729 * 730 * This callback is used to indicate result of an Invitation procedure 731 * started with a call to p2p_invite(). The indicated status code is 732 * the value received from the peer in Invitation Response with 0 733 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 734 * local failure in transmitting the Invitation Request. 735 */ 736 void (*invitation_result)(void *ctx, int status, const u8 *bssid); 737 738 /** 739 * go_connected - Check whether we are connected to a GO 740 * @ctx: Callback context from cb_ctx 741 * @dev_addr: P2P Device Address of a GO 742 * Returns: 1 if we are connected as a P2P client to the specified GO 743 * or 0 if not. 744 */ 745 int (*go_connected)(void *ctx, const u8 *dev_addr); 746 }; 747 748 749 /* P2P module initialization/deinitialization */ 750 751 /** 752 * p2p_init - Initialize P2P module 753 * @cfg: P2P module configuration 754 * Returns: Pointer to private data or %NULL on failure 755 * 756 * This function is used to initialize global P2P module context (one per 757 * device). The P2P module will keep a copy of the configuration data, so the 758 * caller does not need to maintain this structure. However, the callback 759 * functions and the context parameters to them must be kept available until 760 * the P2P module is deinitialized with p2p_deinit(). 761 */ 762 struct p2p_data * p2p_init(const struct p2p_config *cfg); 763 764 /** 765 * p2p_deinit - Deinitialize P2P module 766 * @p2p: P2P module context from p2p_init() 767 */ 768 void p2p_deinit(struct p2p_data *p2p); 769 770 /** 771 * p2p_flush - Flush P2P module state 772 * @p2p: P2P module context from p2p_init() 773 * 774 * This command removes the P2P module state like peer device entries. 775 */ 776 void p2p_flush(struct p2p_data *p2p); 777 778 /** 779 * p2p_unauthorize - Unauthorize the specified peer device 780 * @p2p: P2P module context from p2p_init() 781 * @addr: P2P peer entry to be unauthorized 782 * Returns: 0 on success, -1 on failure 783 * 784 * This command removes any connection authorization from the specified P2P 785 * peer device address. This can be used, e.g., to cancel effect of a previous 786 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 787 * GO Negotiation. 788 */ 789 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 790 791 /** 792 * p2p_set_dev_name - Set device name 793 * @p2p: P2P module context from p2p_init() 794 * Returns: 0 on success, -1 on failure 795 * 796 * This function can be used to update the P2P module configuration with 797 * information that was not available at the time of the p2p_init() call. 798 */ 799 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 800 801 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 802 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 803 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 804 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 805 806 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 807 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 808 809 /** 810 * p2p_set_pri_dev_type - Set primary device type 811 * @p2p: P2P module context from p2p_init() 812 * Returns: 0 on success, -1 on failure 813 * 814 * This function can be used to update the P2P module configuration with 815 * information that was not available at the time of the p2p_init() call. 816 */ 817 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 818 819 /** 820 * p2p_set_sec_dev_types - Set secondary device types 821 * @p2p: P2P module context from p2p_init() 822 * Returns: 0 on success, -1 on failure 823 * 824 * This function can be used to update the P2P module configuration with 825 * information that was not available at the time of the p2p_init() call. 826 */ 827 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 828 size_t num_dev_types); 829 830 int p2p_set_country(struct p2p_data *p2p, const char *country); 831 832 833 /* Commands from upper layer management entity */ 834 835 enum p2p_discovery_type { 836 P2P_FIND_START_WITH_FULL, 837 P2P_FIND_ONLY_SOCIAL, 838 P2P_FIND_PROGRESSIVE 839 }; 840 841 /** 842 * p2p_find - Start P2P Find (Device Discovery) 843 * @p2p: P2P module context from p2p_init() 844 * @timeout: Timeout for find operation in seconds or 0 for no timeout 845 * @type: Device Discovery type 846 * @num_req_dev_types: Number of requested device types 847 * @req_dev_types: Requested device types array, must be an array 848 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 849 * requested device types. 850 * @dev_id: Device ID to search for or %NULL to find all devices 851 * @search_delay: Extra delay in milliseconds between search iterations 852 * Returns: 0 on success, -1 on failure 853 */ 854 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 855 enum p2p_discovery_type type, 856 unsigned int num_req_dev_types, const u8 *req_dev_types, 857 const u8 *dev_id, unsigned int search_delay); 858 859 /** 860 * p2p_stop_find - Stop P2P Find (Device Discovery) 861 * @p2p: P2P module context from p2p_init() 862 */ 863 void p2p_stop_find(struct p2p_data *p2p); 864 865 /** 866 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 867 * @p2p: P2P module context from p2p_init() 868 * @freq: Frequency in MHz for next operation 869 * 870 * This is like p2p_stop_find(), but Listen state is not stopped if we are 871 * already on the same frequency. 872 */ 873 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 874 875 /** 876 * p2p_listen - Start P2P Listen state for specified duration 877 * @p2p: P2P module context from p2p_init() 878 * @timeout: Listen state duration in milliseconds 879 * Returns: 0 on success, -1 on failure 880 * 881 * This function can be used to request the P2P module to keep the device 882 * discoverable on the listen channel for an extended set of time. At least in 883 * its current form, this is mainly used for testing purposes and may not be of 884 * much use for normal P2P operations. 885 */ 886 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 887 888 /** 889 * p2p_connect - Start P2P group formation (GO negotiation) 890 * @p2p: P2P module context from p2p_init() 891 * @peer_addr: MAC address of the peer P2P client 892 * @wps_method: WPS method to be used in provisioning 893 * @go_intent: Local GO intent value (1..15) 894 * @own_interface_addr: Intended interface address to use with the group 895 * @force_freq: The only allowed channel frequency in MHz or 0 896 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 897 * persistent group without persistent reconnect, 2 = persistent group with 898 * persistent reconnect) 899 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 900 * a new SSID 901 * @force_ssid_len: Length of $force_ssid buffer 902 * @pd_before_go_neg: Whether to send Provision Discovery prior to GO 903 * Negotiation as an interoperability workaround when initiating group 904 * formation 905 * Returns: 0 on success, -1 on failure 906 */ 907 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 908 enum p2p_wps_method wps_method, 909 int go_intent, const u8 *own_interface_addr, 910 unsigned int force_freq, int persistent_group, 911 const u8 *force_ssid, size_t force_ssid_len, 912 int pd_before_go_neg); 913 914 /** 915 * p2p_authorize - Authorize P2P group formation (GO negotiation) 916 * @p2p: P2P module context from p2p_init() 917 * @peer_addr: MAC address of the peer P2P client 918 * @wps_method: WPS method to be used in provisioning 919 * @go_intent: Local GO intent value (1..15) 920 * @own_interface_addr: Intended interface address to use with the group 921 * @force_freq: The only allowed channel frequency in MHz or 0 922 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 923 * persistent group without persistent reconnect, 2 = persistent group with 924 * persistent reconnect) 925 * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate 926 * a new SSID 927 * @force_ssid_len: Length of $force_ssid buffer 928 * Returns: 0 on success, -1 on failure 929 * 930 * This is like p2p_connect(), but the actual group negotiation is not 931 * initiated automatically, i.e., the other end is expected to do that. 932 */ 933 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 934 enum p2p_wps_method wps_method, 935 int go_intent, const u8 *own_interface_addr, 936 unsigned int force_freq, int persistent_group, 937 const u8 *force_ssid, size_t force_ssid_len); 938 939 /** 940 * p2p_reject - Reject peer device (explicitly block connection attempts) 941 * @p2p: P2P module context from p2p_init() 942 * @peer_addr: MAC address of the peer P2P client 943 * Returns: 0 on success, -1 on failure 944 */ 945 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 946 947 /** 948 * p2p_prov_disc_req - Send Provision Discovery Request 949 * @p2p: P2P module context from p2p_init() 950 * @peer_addr: MAC address of the peer P2P client 951 * @config_methods: WPS Config Methods value (only one bit set) 952 * @join: Whether this is used by a client joining an active group 953 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 954 * Returns: 0 on success, -1 on failure 955 * 956 * This function can be used to request a discovered P2P peer to display a PIN 957 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 958 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 959 * is transmitted once immediately and if no response is received, the frame 960 * will be sent again whenever the target device is discovered during device 961 * dsicovery (start with a p2p_find() call). Response from the peer is 962 * indicated with the p2p_config::prov_disc_resp() callback. 963 */ 964 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 965 u16 config_methods, int join, int force_freq); 966 967 /** 968 * p2p_sd_request - Schedule a service discovery query 969 * @p2p: P2P module context from p2p_init() 970 * @dst: Destination peer or %NULL to apply for all peers 971 * @tlvs: P2P Service Query TLV(s) 972 * Returns: Reference to the query or %NULL on failure 973 * 974 * Response to the query is indicated with the p2p_config::sd_response() 975 * callback. 976 */ 977 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 978 const struct wpabuf *tlvs); 979 980 #ifdef CONFIG_WIFI_DISPLAY 981 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, 982 const struct wpabuf *tlvs); 983 #endif /* CONFIG_WIFI_DISPLAY */ 984 985 /** 986 * p2p_sd_cancel_request - Cancel a pending service discovery query 987 * @p2p: P2P module context from p2p_init() 988 * @req: Query reference from p2p_sd_request() 989 * Returns: 0 if request for cancelled; -1 if not found 990 */ 991 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 992 993 /** 994 * p2p_sd_response - Send response to a service discovery query 995 * @p2p: P2P module context from p2p_init() 996 * @freq: Frequency from p2p_config::sd_request() callback 997 * @dst: Destination address from p2p_config::sd_request() callback 998 * @dialog_token: Dialog token from p2p_config::sd_request() callback 999 * @resp_tlvs: P2P Service Response TLV(s) 1000 * 1001 * This function is called as a response to the request indicated with 1002 * p2p_config::sd_request() callback. 1003 */ 1004 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 1005 u8 dialog_token, const struct wpabuf *resp_tlvs); 1006 1007 /** 1008 * p2p_sd_service_update - Indicate a change in local services 1009 * @p2p: P2P module context from p2p_init() 1010 * 1011 * This function needs to be called whenever there is a change in availability 1012 * of the local services. This will increment the Service Update Indicator 1013 * value which will be used in SD Request and Response frames. 1014 */ 1015 #ifdef ANDROID_P2P 1016 void p2p_sd_service_update(struct p2p_data *p2p, int action); 1017 #else 1018 void p2p_sd_service_update(struct p2p_data *p2p); 1019 #endif 1020 1021 1022 enum p2p_invite_role { 1023 P2P_INVITE_ROLE_GO, 1024 P2P_INVITE_ROLE_ACTIVE_GO, 1025 P2P_INVITE_ROLE_CLIENT 1026 }; 1027 1028 /** 1029 * p2p_invite - Invite a P2P Device into a group 1030 * @p2p: P2P module context from p2p_init() 1031 * @peer: Device Address of the peer P2P Device 1032 * @role: Local role in the group 1033 * @bssid: Group BSSID or %NULL if not known 1034 * @ssid: Group SSID 1035 * @ssid_len: Length of ssid in octets 1036 * @force_freq: The only allowed channel frequency in MHz or 0 1037 * @go_dev_addr: Forced GO Device Address or %NULL if none 1038 * @persistent_group: Whether this is to reinvoke a persistent group 1039 * Returns: 0 on success, -1 on failure 1040 */ 1041 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 1042 const u8 *bssid, const u8 *ssid, size_t ssid_len, 1043 unsigned int force_freq, const u8 *go_dev_addr, 1044 int persistent_group); 1045 1046 /** 1047 * p2p_presence_req - Request GO presence 1048 * @p2p: P2P module context from p2p_init() 1049 * @go_interface_addr: GO P2P Interface Address 1050 * @own_interface_addr: Own P2P Interface Address for this group 1051 * @freq: Group operating frequence (in MHz) 1052 * @duration1: Preferred presence duration in microseconds 1053 * @interval1: Preferred presence interval in microseconds 1054 * @duration2: Acceptable presence duration in microseconds 1055 * @interval2: Acceptable presence interval in microseconds 1056 * Returns: 0 on success, -1 on failure 1057 * 1058 * If both duration and interval values are zero, the parameter pair is not 1059 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 1060 */ 1061 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1062 const u8 *own_interface_addr, unsigned int freq, 1063 u32 duration1, u32 interval1, u32 duration2, 1064 u32 interval2); 1065 1066 /** 1067 * p2p_ext_listen - Set Extended Listen Timing 1068 * @p2p: P2P module context from p2p_init() 1069 * @freq: Group operating frequence (in MHz) 1070 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1071 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1072 * Returns: 0 on success, -1 on failure 1073 * 1074 * This function can be used to enable or disable (period = interval = 0) 1075 * Extended Listen Timing. When enabled, the P2P Device will become 1076 * discoverable (go into Listen State) every @interval milliseconds for at 1077 * least @period milliseconds. 1078 */ 1079 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1080 unsigned int interval); 1081 1082 /* Event notifications from upper layer management operations */ 1083 1084 /** 1085 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1086 * @p2p: P2P module context from p2p_init() 1087 * @mac_addr: Peer address 1088 * 1089 * This function is used to report successfully completed WPS provisioning 1090 * during group formation in both GO/Registrar and client/Enrollee roles. 1091 */ 1092 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1093 1094 /** 1095 * p2p_group_formation_failed - Report failed WPS provisioning 1096 * @p2p: P2P module context from p2p_init() 1097 * 1098 * This function is used to report failed group formation. This can happen 1099 * either due to failed WPS provisioning or due to 15 second timeout during 1100 * the provisioning phase. 1101 */ 1102 void p2p_group_formation_failed(struct p2p_data *p2p); 1103 1104 /** 1105 * p2p_get_provisioning_info - Get any stored provisioning info 1106 * @p2p: P2P module context from p2p_init() 1107 * @addr: Peer P2P Device Address 1108 * Returns: WPS provisioning information (WPS config method) or 0 if no 1109 * information is available 1110 * 1111 * This function is used to retrieve stored WPS provisioning info for the given 1112 * peer. 1113 */ 1114 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1115 1116 /** 1117 * p2p_clear_provisioning_info - Clear any stored provisioning info 1118 * @p2p: P2P module context from p2p_init() 1119 * @iface_addr: Peer P2P Device Address 1120 * 1121 * This function is used to clear stored WPS provisioning info for the given 1122 * peer. 1123 */ 1124 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1125 1126 1127 /* Event notifications from lower layer driver operations */ 1128 1129 /** 1130 * enum p2p_probe_req_status 1131 * 1132 * @P2P_PREQ_MALFORMED: frame was not well-formed 1133 * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored 1134 * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request 1135 * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed 1136 * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P 1137 */ 1138 enum p2p_probe_req_status { 1139 P2P_PREQ_MALFORMED, 1140 P2P_PREQ_NOT_LISTEN, 1141 P2P_PREQ_NOT_P2P, 1142 P2P_PREQ_NOT_PROCESSED, 1143 P2P_PREQ_PROCESSED 1144 }; 1145 1146 /** 1147 * p2p_probe_req_rx - Report reception of a Probe Request frame 1148 * @p2p: P2P module context from p2p_init() 1149 * @addr: Source MAC address 1150 * @dst: Destination MAC address if available or %NULL 1151 * @bssid: BSSID if available or %NULL 1152 * @ie: Information elements from the Probe Request frame body 1153 * @ie_len: Length of ie buffer in octets 1154 * Returns: value indicating the type and status of the probe request 1155 */ 1156 enum p2p_probe_req_status 1157 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1158 const u8 *bssid, const u8 *ie, size_t ie_len); 1159 1160 /** 1161 * p2p_rx_action - Report received Action frame 1162 * @p2p: P2P module context from p2p_init() 1163 * @da: Destination address of the received Action frame 1164 * @sa: Source address of the received Action frame 1165 * @bssid: Address 3 of the received Action frame 1166 * @category: Category of the received Action frame 1167 * @data: Action frame body after the Category field 1168 * @len: Length of the data buffer in octets 1169 * @freq: Frequency (in MHz) on which the frame was received 1170 */ 1171 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1172 const u8 *bssid, u8 category, 1173 const u8 *data, size_t len, int freq); 1174 1175 /** 1176 * p2p_scan_res_handler - Indicate a P2P scan results 1177 * @p2p: P2P module context from p2p_init() 1178 * @bssid: BSSID of the scan result 1179 * @freq: Frequency of the channel on which the device was found in MHz 1180 * @level: Signal level (signal strength of the received Beacon/Probe Response 1181 * frame) 1182 * @ies: Pointer to IEs from the scan result 1183 * @ies_len: Length of the ies buffer 1184 * Returns: 0 to continue or 1 to stop scan result indication 1185 * 1186 * This function is called to indicate a scan result entry with P2P IE from a 1187 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1188 * the actual scan process (i.e., whenever a new device is found) or as a 1189 * sequence of calls after the full scan has been completed. The former option 1190 * can result in optimized operations, but may not be supported by all 1191 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1192 * but it is recommended to include all IEs received from the device. The 1193 * caller does not need to check that the IEs contain a P2P IE before calling 1194 * this function since frames will be filtered internally if needed. 1195 * 1196 * This function will return 1 if it wants to stop scan result iteration (and 1197 * scan in general if it is still in progress). This is used to allow faster 1198 * start of a pending operation, e.g., to start a pending GO negotiation. 1199 */ 1200 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1201 int level, const u8 *ies, size_t ies_len); 1202 1203 /** 1204 * p2p_scan_res_handled - Indicate end of scan results 1205 * @p2p: P2P module context from p2p_init() 1206 * 1207 * This function is called to indicate that all P2P scan results from a scan 1208 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1209 * function must be called as a response to successful 1210 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1211 * calls stopped iteration. 1212 */ 1213 void p2p_scan_res_handled(struct p2p_data *p2p); 1214 1215 enum p2p_send_action_result { 1216 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1217 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1218 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1219 }; 1220 1221 /** 1222 * p2p_send_action_cb - Notify TX status of an Action frame 1223 * @p2p: P2P module context from p2p_init() 1224 * @freq: Channel frequency in MHz 1225 * @dst: Destination MAC address (Address 1) 1226 * @src: Source MAC address (Address 2) 1227 * @bssid: BSSID (Address 3) 1228 * @result: Result of the transmission attempt 1229 * 1230 * This function is used to indicate the result of an Action frame transmission 1231 * that was requested with struct p2p_config::send_action() callback. 1232 */ 1233 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1234 const u8 *src, const u8 *bssid, 1235 enum p2p_send_action_result result); 1236 1237 /** 1238 * p2p_listen_cb - Indicate the start of a requested Listen state 1239 * @p2p: P2P module context from p2p_init() 1240 * @freq: Listen channel frequency in MHz 1241 * @duration: Duration for the Listen state in milliseconds 1242 * 1243 * This function is used to indicate that a Listen state requested with 1244 * struct p2p_config::start_listen() callback has started. 1245 */ 1246 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1247 unsigned int duration); 1248 1249 /** 1250 * p2p_listen_end - Indicate the end of a requested Listen state 1251 * @p2p: P2P module context from p2p_init() 1252 * @freq: Listen channel frequency in MHz 1253 * Returns: 0 if no operations were started, 1 if an operation was started 1254 * 1255 * This function is used to indicate that a Listen state requested with 1256 * struct p2p_config::start_listen() callback has ended. 1257 */ 1258 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1259 1260 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1261 const u8 *ie, size_t ie_len); 1262 1263 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1264 const u8 *ie, size_t ie_len); 1265 1266 1267 /* Per-group P2P state for GO */ 1268 1269 struct p2p_group; 1270 1271 /** 1272 * struct p2p_group_config - P2P group configuration 1273 * 1274 * This configuration is provided to the P2P module during initialization of 1275 * the per-group information with p2p_group_init(). 1276 */ 1277 struct p2p_group_config { 1278 /** 1279 * persistent_group - Whether the group is persistent 1280 * 0 = not a persistent group 1281 * 1 = persistent group without persistent reconnect 1282 * 2 = persistent group with persistent reconnect 1283 */ 1284 int persistent_group; 1285 1286 /** 1287 * interface_addr - P2P Interface Address of the group 1288 */ 1289 u8 interface_addr[ETH_ALEN]; 1290 1291 /** 1292 * max_clients - Maximum number of clients in the group 1293 */ 1294 unsigned int max_clients; 1295 1296 /** 1297 * ssid - Group SSID 1298 */ 1299 u8 ssid[32]; 1300 1301 /** 1302 * ssid_len - Length of SSID 1303 */ 1304 size_t ssid_len; 1305 1306 /** 1307 * cb_ctx - Context to use with callback functions 1308 */ 1309 void *cb_ctx; 1310 1311 /** 1312 * ie_update - Notification of IE update 1313 * @ctx: Callback context from cb_ctx 1314 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1315 * @proberesp_ies: P2P Ie for Probe Response frames 1316 * 1317 * P2P module uses this callback function to notify whenever the P2P IE 1318 * in Beacon or Probe Response frames should be updated based on group 1319 * events. 1320 * 1321 * The callee is responsible for freeing the returned buffer(s) with 1322 * wpabuf_free(). 1323 */ 1324 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1325 struct wpabuf *proberesp_ies); 1326 1327 /** 1328 * idle_update - Notification of changes in group idle state 1329 * @ctx: Callback context from cb_ctx 1330 * @idle: Whether the group is idle (no associated stations) 1331 */ 1332 void (*idle_update)(void *ctx, int idle); 1333 }; 1334 1335 /** 1336 * p2p_group_init - Initialize P2P group 1337 * @p2p: P2P module context from p2p_init() 1338 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1339 * Returns: Pointer to private data or %NULL on failure 1340 * 1341 * This function is used to initialize per-group P2P module context. Currently, 1342 * this is only used to manage GO functionality and P2P clients do not need to 1343 * create an instance of this per-group information. 1344 */ 1345 struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1346 struct p2p_group_config *config); 1347 1348 /** 1349 * p2p_group_deinit - Deinitialize P2P group 1350 * @group: P2P group context from p2p_group_init() 1351 */ 1352 void p2p_group_deinit(struct p2p_group *group); 1353 1354 /** 1355 * p2p_group_notif_assoc - Notification of P2P client association with GO 1356 * @group: P2P group context from p2p_group_init() 1357 * @addr: Interface address of the P2P client 1358 * @ie: IEs from the (Re)association Request frame 1359 * @len: Length of the ie buffer in octets 1360 * Returns: 0 on success, -1 on failure 1361 */ 1362 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1363 const u8 *ie, size_t len); 1364 1365 /** 1366 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1367 * @group: P2P group context from p2p_group_init() 1368 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1369 * Returns: P2P IE for (Re)association Response or %NULL on failure 1370 * 1371 * The caller is responsible for freeing the returned buffer with 1372 * wpabuf_free(). 1373 */ 1374 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1375 1376 /** 1377 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1378 * @group: P2P group context from p2p_group_init() 1379 * @addr: Interface address of the P2P client 1380 */ 1381 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1382 1383 /** 1384 * p2p_group_notif_formation_done - Notification of completed group formation 1385 * @group: P2P group context from p2p_group_init() 1386 */ 1387 void p2p_group_notif_formation_done(struct p2p_group *group); 1388 1389 /** 1390 * p2p_group_notif_noa - Notification of NoA change 1391 * @group: P2P group context from p2p_group_init() 1392 * @noa: Notice of Absence attribute payload, %NULL if none 1393 * @noa_len: Length of noa buffer in octets 1394 * Returns: 0 on success, -1 on failure 1395 * 1396 * Notify the P2P group management about a new NoA contents. This will be 1397 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1398 * the group information. 1399 */ 1400 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1401 size_t noa_len); 1402 1403 /** 1404 * p2p_group_match_dev_type - Match device types in group with requested type 1405 * @group: P2P group context from p2p_group_init() 1406 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1407 * Returns: 1 on match, 0 on mismatch 1408 * 1409 * This function can be used to match the Requested Device Type attribute in 1410 * WPS IE with the device types of a group member for deciding whether a GO 1411 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1412 * is not requested any specific device type. 1413 */ 1414 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1415 1416 /** 1417 * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id 1418 */ 1419 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p); 1420 1421 /** 1422 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1423 * @group: P2P group context from p2p_group_init() 1424 * Returns: 0 on success (frame scheduled); -1 if client was not found 1425 */ 1426 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1427 const u8 *searching_dev, int rx_freq); 1428 1429 1430 /* Generic helper functions */ 1431 1432 /** 1433 * p2p_ie_text - Build text format description of P2P IE 1434 * @p2p_ie: P2P IE 1435 * @buf: Buffer for returning text 1436 * @end: Pointer to the end of the buf area 1437 * Returns: Number of octets written to the buffer or -1 on failure 1438 * 1439 * This function can be used to parse P2P IE contents into text format 1440 * field=value lines. 1441 */ 1442 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1443 1444 /** 1445 * p2p_scan_result_text - Build text format description of P2P IE 1446 * @ies: Information elements from scan results 1447 * @ies_len: ies buffer length in octets 1448 * @buf: Buffer for returning text 1449 * @end: Pointer to the end of the buf area 1450 * Returns: Number of octets written to the buffer or -1 on failure 1451 * 1452 * This function can be used to parse P2P IE contents into text format 1453 * field=value lines. 1454 */ 1455 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1456 1457 /** 1458 * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated 1459 * P2P IE 1460 * @p2p_ie: P2P IE 1461 * @dev_addr: Buffer for returning P2P Device Address 1462 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1463 */ 1464 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr); 1465 1466 /** 1467 * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s) 1468 * @ies: Information elements from scan results 1469 * @ies_len: ies buffer length in octets 1470 * @dev_addr: Buffer for returning P2P Device Address 1471 * Returns: 0 on success or -1 if P2P Device Address could not be parsed 1472 */ 1473 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr); 1474 1475 /** 1476 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1477 * @p2p: P2P module context from p2p_init() 1478 * @bssid: BSSID 1479 * @buf: Buffer for writing the P2P IE 1480 * @len: Maximum buf length in octets 1481 * @p2p_group: Whether this is for association with a P2P GO 1482 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1483 * Returns: Number of octets written into buf or -1 on failure 1484 */ 1485 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1486 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1487 1488 /** 1489 * p2p_scan_ie - Build P2P IE for Probe Request 1490 * @p2p: P2P module context from p2p_init() 1491 * @ies: Buffer for writing P2P IE 1492 * @dev_id: Device ID to search for or %NULL for any 1493 */ 1494 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id); 1495 1496 /** 1497 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1498 * @p2p: P2P module context from p2p_init() 1499 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1500 */ 1501 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1502 1503 /** 1504 * p2p_go_params - Generate random P2P group parameters 1505 * @p2p: P2P module context from p2p_init() 1506 * @params: Buffer for parameters 1507 * Returns: 0 on success, -1 on failure 1508 */ 1509 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1510 1511 /** 1512 * p2p_get_group_capab - Get Group Capability from P2P IE data 1513 * @p2p_ie: P2P IE(s) contents 1514 * Returns: Group Capability 1515 */ 1516 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1517 1518 /** 1519 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1520 * @p2p_ie: P2P IE(s) contents 1521 * Returns: 0 if cross connection is allow, 1 if not 1522 */ 1523 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1524 1525 /** 1526 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1527 * @p2p_ie: P2P IE(s) contents 1528 * Returns: Pointer to P2P Device Address or %NULL if not included 1529 */ 1530 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1531 1532 /** 1533 * p2p_get_peer_info - Get P2P peer information 1534 * @p2p: P2P module context from p2p_init() 1535 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1536 * @next: Whether to select the peer entry following the one indicated by addr 1537 * Returns: Pointer to peer info or %NULL if not found 1538 */ 1539 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1540 const u8 *addr, int next); 1541 1542 /** 1543 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1544 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1545 * @buf: Buffer for returning text 1546 * @buflen: Maximum buffer length 1547 * Returns: Number of octets written to the buffer or -1 on failure 1548 * 1549 * Note: This information is internal to the P2P module and subject to change. 1550 * As such, this should not really be used by external programs for purposes 1551 * other than debugging. 1552 */ 1553 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1554 char *buf, size_t buflen); 1555 1556 /** 1557 * p2p_peer_known - Check whether P2P peer is known 1558 * @p2p: P2P module context from p2p_init() 1559 * @addr: P2P Device Address of the peer 1560 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1561 */ 1562 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1563 1564 /** 1565 * p2p_set_client_discoverability - Set client discoverability capability 1566 * @p2p: P2P module context from p2p_init() 1567 * @enabled: Whether client discoverability will be enabled 1568 * 1569 * This function can be used to disable (and re-enable) client discoverability. 1570 * This capability is enabled by default and should not be disabled in normal 1571 * use cases, i.e., this is mainly for testing purposes. 1572 */ 1573 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1574 1575 /** 1576 * p2p_set_managed_oper - Set managed P2P Device operations capability 1577 * @p2p: P2P module context from p2p_init() 1578 * @enabled: Whether managed P2P Device operations will be enabled 1579 */ 1580 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1581 1582 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1583 1584 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1585 1586 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1587 u8 *iface_addr); 1588 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1589 u8 *dev_addr); 1590 1591 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1592 1593 /** 1594 * p2p_set_cross_connect - Set cross connection capability 1595 * @p2p: P2P module context from p2p_init() 1596 * @enabled: Whether cross connection will be enabled 1597 */ 1598 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1599 1600 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1601 1602 /** 1603 * p2p_set_intra_bss_dist - Set intra BSS distribution 1604 * @p2p: P2P module context from p2p_init() 1605 * @enabled: Whether intra BSS distribution will be enabled 1606 */ 1607 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1608 1609 /** 1610 * p2p_supported_freq - Check whether channel is supported for P2P 1611 * @p2p: P2P module context from p2p_init() 1612 * @freq: Channel frequency in MHz 1613 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1614 */ 1615 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1616 1617 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1618 1619 /** 1620 * p2p_set_best_channels - Update best channel information 1621 * @p2p: P2P module context from p2p_init() 1622 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1623 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1624 * @freq_overall: Frequency (MHz) of best channel overall 1625 */ 1626 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1627 int freq_overall); 1628 1629 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1630 1631 /** 1632 * p2p_get_group_num_members - Get number of members in group 1633 * @group: P2P group context from p2p_group_init() 1634 * Returns: Number of members in the group 1635 */ 1636 unsigned int p2p_get_group_num_members(struct p2p_group *group); 1637 1638 /** 1639 * p2p_iterate_group_members - Iterate group members 1640 * @group: P2P group context from p2p_group_init() 1641 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1642 * on the first call and not modified later 1643 * Returns: A P2P Interface Address for each call and %NULL for no more members 1644 */ 1645 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1646 1647 /** 1648 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1649 * @group: P2P group context from p2p_group_init() 1650 * @addr: P2P Interface Address of the client 1651 * Returns: P2P Device Address of the client if found or %NULL if no match 1652 * found 1653 */ 1654 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1655 1656 /** 1657 * p2p_group_is_client_connected - Check whether a specific client is connected 1658 * @group: P2P group context from p2p_group_init() 1659 * @addr: P2P Device Address of the client 1660 * Returns: 1 if client is connected or 0 if not 1661 */ 1662 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr); 1663 1664 /** 1665 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1666 * @p2p: P2P module context from p2p_init() 1667 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1668 * @next: Whether to select the peer entry following the one indicated by addr 1669 * Returns: The first P2P peer info available or %NULL if no such peer exists 1670 */ 1671 const struct p2p_peer_info * 1672 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1673 1674 /** 1675 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1676 * @p2p: P2P module context from p2p_init() 1677 */ 1678 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1679 1680 /** 1681 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1682 * @p2p: P2P module context from p2p_init() 1683 * @vendor_ext: The vendor extensions to add 1684 * Returns: 0 on success, -1 on failure 1685 * 1686 * The wpabuf structures in the array are owned by the P2P 1687 * module after this call. 1688 */ 1689 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1690 const struct wpabuf *vendor_ext); 1691 1692 /** 1693 * p2p_set_oper_channel - Set the P2P operating channel 1694 * @p2p: P2P module context from p2p_init() 1695 * @op_reg_class: Operating regulatory class to set 1696 * @op_channel: operating channel to set 1697 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1698 * Returns: 0 on success, -1 on failure 1699 */ 1700 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1701 int cfg_op_channel); 1702 1703 /** 1704 * p2p_set_pref_chan - Set P2P preferred channel list 1705 * @p2p: P2P module context from p2p_init() 1706 * @num_pref_chan: Number of entries in pref_chan list 1707 * @pref_chan: Preferred channels or %NULL to remove preferences 1708 * Returns: 0 on success, -1 on failure 1709 */ 1710 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 1711 const struct p2p_channel *pref_chan); 1712 1713 /** 1714 * p2p_in_progress - Check whether a P2P operation is progress 1715 * @p2p: P2P module context from p2p_init() 1716 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1717 */ 1718 int p2p_in_progress(struct p2p_data *p2p); 1719 1720 #ifdef ANDROID_P2P 1721 /** 1722 * p2p_search_in_progress - Check whether a P2P SEARCH is in progress 1723 * @p2p: P2P module context from p2p_init() 1724 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1725 */ 1726 int p2p_search_in_progress(struct p2p_data *p2p); 1727 1728 /** 1729 * p2p_search_pending - Check whether there is a deferred P2P SEARCH 1730 * @p2p: P2P module context from p2p_init() 1731 * Returns: 0 if there is no deferred P2P search or 1 if there is one 1732 */ 1733 int p2p_search_pending(struct p2p_data *p2p); 1734 #endif 1735 1736 /** 1737 * p2p_other_scan_completed - Notify completion of non-P2P scan 1738 * @p2p: P2P module context from p2p_init() 1739 * Returns: 0 if P2P module is idle or 1 if an operation was started 1740 */ 1741 int p2p_other_scan_completed(struct p2p_data *p2p); 1742 1743 const char * p2p_wps_method_text(enum p2p_wps_method method); 1744 1745 /** 1746 * p2p_set_config_timeout - Set local config timeouts 1747 * @p2p: P2P module context from p2p_init() 1748 * @go_timeout: Time in 10 ms units it takes to start the GO mode 1749 * @client_timeout: Time in 10 ms units it takes to start the client mode 1750 */ 1751 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 1752 u8 client_timeout); 1753 1754 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay); 1755 1756 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie); 1757 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie); 1758 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie); 1759 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie); 1760 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie); 1761 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie); 1762 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie); 1763 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie); 1764 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem); 1765 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem); 1766 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 1767 const struct wpabuf *elem); 1768 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems); 1769 1770 #endif /* P2P_H */ 1771