p2p.h revision 75ecf5267604f166b85a7ee2cf0d9cb682966680
1/* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15#ifndef P2P_H 16#define P2P_H 17 18/** 19 * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes 20 */ 21#define P2P_MAX_REG_CLASSES 10 22 23/** 24 * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class 25 */ 26#define P2P_MAX_REG_CLASS_CHANNELS 20 27 28/** 29 * struct p2p_channels - List of supported channels 30 */ 31struct p2p_channels { 32 /** 33 * struct p2p_reg_class - Supported regulatory class 34 */ 35 struct p2p_reg_class { 36 /** 37 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J) 38 */ 39 u8 reg_class; 40 41 /** 42 * channel - Supported channels 43 */ 44 u8 channel[P2P_MAX_REG_CLASS_CHANNELS]; 45 46 /** 47 * channels - Number of channel entries in use 48 */ 49 size_t channels; 50 } reg_class[P2P_MAX_REG_CLASSES]; 51 52 /** 53 * reg_classes - Number of reg_class entries in use 54 */ 55 size_t reg_classes; 56}; 57 58enum p2p_wps_method { 59 WPS_NOT_READY, WPS_PIN_LABEL, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC 60}; 61 62/** 63 * struct p2p_go_neg_results - P2P Group Owner Negotiation results 64 */ 65struct p2p_go_neg_results { 66 /** 67 * status - Negotiation result (Status Code) 68 * 69 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate 70 * failed negotiation. 71 */ 72 int status; 73 74 /** 75 * role_go - Whether local end is Group Owner 76 */ 77 int role_go; 78 79 /** 80 * freq - Frequency of the group operational channel in MHz 81 */ 82 int freq; 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 */ 124 int persistent_group; 125 126 /** 127 * peer_config_timeout - Peer configuration timeout (in 10 msec units) 128 */ 129 unsigned int peer_config_timeout; 130}; 131 132struct p2p_data; 133 134enum p2p_scan_type { 135 P2P_SCAN_SOCIAL, 136 P2P_SCAN_FULL, 137 P2P_SCAN_SPECIFIC, 138 P2P_SCAN_SOCIAL_PLUS_ONE 139}; 140 141#define P2P_MAX_WPS_VENDOR_EXT 10 142 143/** 144 * struct p2p_peer_info - P2P peer information 145 */ 146struct p2p_peer_info { 147 /** 148 * p2p_device_addr - P2P Device Address of the peer 149 */ 150 u8 p2p_device_addr[ETH_ALEN]; 151 152 /** 153 * pri_dev_type - Primary Device Type 154 */ 155 u8 pri_dev_type[8]; 156 157 /** 158 * device_name - Device Name (0..32 octets encoded in UTF-8) 159 */ 160 char device_name[33]; 161 162 /** 163 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8) 164 */ 165 char manufacturer[65]; 166 167 /** 168 * model_name - Model Name (0..32 octets encoded in UTF-8) 169 */ 170 char model_name[33]; 171 172 /** 173 * model_number - Model Number (0..32 octets encoded in UTF-8) 174 */ 175 char model_number[33]; 176 177 /** 178 * serial_number - Serial Number (0..32 octets encoded in UTF-8) 179 */ 180 char serial_number[33]; 181 182 /** 183 * level - Signal level 184 */ 185 int level; 186 187 /** 188 * config_methods - WPS Configuration Methods 189 */ 190 u16 config_methods; 191 192 /** 193 * dev_capab - Device Capabilities 194 */ 195 u8 dev_capab; 196 197 /** 198 * group_capab - Group Capabilities 199 */ 200 u8 group_capab; 201 202 /** 203 * wps_sec_dev_type_list - WPS secondary device type list 204 * 205 * This list includes from 0 to 16 Secondary Device Types as indicated 206 * by wps_sec_dev_type_list_len (8 * number of types). 207 */ 208 u8 wps_sec_dev_type_list[128]; 209 210 /** 211 * wps_sec_dev_type_list_len - Length of secondary device type list 212 */ 213 size_t wps_sec_dev_type_list_len; 214 215 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; 216}; 217 218enum p2p_prov_disc_status { 219 P2P_PROV_DISC_SUCCESS, 220 P2P_PROV_DISC_TIMEOUT, 221 P2P_PROV_DISC_REJECTED, 222}; 223 224/** 225 * struct p2p_config - P2P configuration 226 * 227 * This configuration is provided to the P2P module during initialization with 228 * p2p_init(). 229 */ 230struct p2p_config { 231 /** 232 * country - Country code to use in P2P operations 233 */ 234 char country[3]; 235 236 /** 237 * reg_class - Regulatory class for own listen channel 238 */ 239 u8 reg_class; 240 241 /** 242 * channel - Own listen channel 243 */ 244 u8 channel; 245 246 /** 247 * Regulatory class for own operational channel 248 */ 249 u8 op_reg_class; 250 251 /** 252 * op_channel - Own operational channel 253 */ 254 u8 op_channel; 255 256 /** 257 * cfg_op_channel - Whether op_channel is hardcoded in configuration 258 */ 259 u8 cfg_op_channel; 260 261 /** 262 * channels - Own supported regulatory classes and channels 263 * 264 * List of supposerted channels per regulatory class. The regulatory 265 * classes are defined in IEEE Std 802.11-2007 Annex J and the 266 * numbering of the clases depends on the configured country code. 267 */ 268 struct p2p_channels channels; 269 270 /** 271 * pri_dev_type - Primary Device Type (see WPS) 272 */ 273 u8 pri_dev_type[8]; 274 275 /** 276 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 277 */ 278#define P2P_SEC_DEVICE_TYPES 5 279 280 /** 281 * sec_dev_type - Optional secondary device types 282 */ 283 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 284 285 /** 286 * num_sec_dev_types - Number of sec_dev_type entries 287 */ 288 size_t num_sec_dev_types; 289 290 /** 291 * dev_addr - P2P Device Address 292 */ 293 u8 dev_addr[ETH_ALEN]; 294 295 /** 296 * dev_name - Device Name 297 */ 298 char *dev_name; 299 300 char *manufacturer; 301 char *model_name; 302 char *model_number; 303 char *serial_number; 304 305 u8 uuid[16]; 306 u16 config_methods; 307 308 /** 309 * concurrent_operations - Whether concurrent operations are supported 310 */ 311 int concurrent_operations; 312 313 /** 314 * max_peers - Maximum number of discovered peers to remember 315 * 316 * If more peers are discovered, older entries will be removed to make 317 * room for the new ones. 318 */ 319 size_t max_peers; 320 321 /** 322 * p2p_intra_bss - Intra BSS communication is supported 323 */ 324 int p2p_intra_bss; 325 326 /** 327 * ssid_postfix - Postfix data to add to the SSID 328 * 329 * This data will be added to the end of the SSID after the 330 * DIRECT-<random two octets> prefix. 331 */ 332 u8 ssid_postfix[32 - 9]; 333 334 /** 335 * ssid_postfix_len - Length of the ssid_postfix data 336 */ 337 size_t ssid_postfix_len; 338 339 /** 340 * msg_ctx - Context to use with wpa_msg() calls 341 */ 342 void *msg_ctx; 343 344 /** 345 * cb_ctx - Context to use with callback functions 346 */ 347 void *cb_ctx; 348 349 350 /* Callbacks to request lower layer driver operations */ 351 352 /** 353 * p2p_scan - Request a P2P scan/search 354 * @ctx: Callback context from cb_ctx 355 * @type: Scan type 356 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 357 * @num_req_dev_types: Number of requested device types 358 * @req_dev_types: Array containing requested device types 359 * Returns: 0 on success, -1 on failure 360 * 361 * This callback function is used to request a P2P scan or search 362 * operation to be completed. Type type argument specifies which type 363 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 364 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 365 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC 366 * request a scan of a single channel specified by freq. 367 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 368 * plus one extra channel specified by freq. 369 * 370 * The full scan is used for the initial scan to find group owners from 371 * all. The other types are used during search phase scan of the social 372 * channels (with potential variation if the Listen channel of the 373 * target peer is known or if other channels are scanned in steps). 374 * 375 * The scan results are returned after this call by calling 376 * p2p_scan_res_handler() for each scan result that has a P2P IE and 377 * then calling p2p_scan_res_handled() to indicate that all scan 378 * results have been indicated. 379 */ 380 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 381 unsigned int num_req_dev_types, 382 const u8 *req_dev_types); 383 384 /** 385 * send_probe_resp - Transmit a Probe Response frame 386 * @ctx: Callback context from cb_ctx 387 * @buf: Probe Response frame (including the header and body) 388 * Returns: 0 on success, -1 on failure 389 * 390 * This function is used to reply to Probe Request frames that were 391 * indicated with a call to p2p_probe_req_rx(). The response is to be 392 * sent on the same channel or to be dropped if the driver is not 393 * anymore listening to Probe Request frames. 394 * 395 * Alternatively, the responsibility for building the Probe Response 396 * frames in Listen state may be in another system component in which 397 * case this function need to be implemented (i.e., the function 398 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 399 * Response frames in such a case are available from the 400 * start_listen() callback. It should be noted that the received Probe 401 * Request frames must be indicated by calling p2p_probe_req_rx() even 402 * if this send_probe_resp() is not used. 403 */ 404 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 405 406 /** 407 * send_action - Transmit an Action frame 408 * @ctx: Callback context from cb_ctx 409 * @freq: Frequency in MHz for the channel on which to transmit 410 * @dst: Destination MAC address (Address 1) 411 * @src: Source MAC address (Address 2) 412 * @bssid: BSSID (Address 3) 413 * @buf: Frame body (starting from Category field) 414 * @len: Length of buf in octets 415 * @wait_time: How many msec to wait for a response frame 416 * Returns: 0 on success, -1 on failure 417 * 418 * The Action frame may not be transmitted immediately and the status 419 * of the transmission must be reported by calling 420 * p2p_send_action_cb() once the frame has either been transmitted or 421 * it has been dropped due to excessive retries or other failure to 422 * transmit. 423 */ 424 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 425 const u8 *src, const u8 *bssid, const u8 *buf, 426 size_t len, unsigned int wait_time); 427 428 /** 429 * send_action_done - Notify that Action frame sequence was completed 430 * @ctx: Callback context from cb_ctx 431 * 432 * This function is called when the Action frame sequence that was 433 * started with send_action() has been completed, i.e., when there is 434 * no need to wait for a response from the destination peer anymore. 435 */ 436 void (*send_action_done)(void *ctx); 437 438 /** 439 * start_listen - Start Listen state 440 * @ctx: Callback context from cb_ctx 441 * @freq: Frequency of the listen channel in MHz 442 * @duration: Duration for the Listen state in milliseconds 443 * @probe_resp_ie: IE(s) to be added to Probe Response frames 444 * Returns: 0 on success, -1 on failure 445 * 446 * This Listen state may not start immediately since the driver may 447 * have other pending operations to complete first. Once the Listen 448 * state has started, p2p_listen_cb() must be called to notify the P2P 449 * module. Once the Listen state is stopped, p2p_listen_end() must be 450 * called to notify the P2P module that the driver is not in the Listen 451 * state anymore. 452 * 453 * If the send_probe_resp() is not used for generating the response, 454 * the IEs from probe_resp_ie need to be added to the end of the Probe 455 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 456 * information can be ignored. 457 */ 458 int (*start_listen)(void *ctx, unsigned int freq, 459 unsigned int duration, 460 const struct wpabuf *probe_resp_ie); 461 /** 462 * stop_listen - Stop Listen state 463 * @ctx: Callback context from cb_ctx 464 * 465 * This callback can be used to stop a Listen state operation that was 466 * previously requested with start_listen(). 467 */ 468 void (*stop_listen)(void *ctx); 469 470 /** 471 * get_noa - Get current Notice of Absence attribute payload 472 * @ctx: Callback context from cb_ctx 473 * @interface_addr: P2P Interface Address of the GO 474 * @buf: Buffer for returning NoA 475 * @buf_len: Buffer length in octets 476 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 477 * advertized, or -1 on failure 478 * 479 * This function is used to fetch the current Notice of Absence 480 * attribute value from GO. 481 */ 482 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 483 size_t buf_len); 484 485 /* Callbacks to notify events to upper layer management entity */ 486 487 /** 488 * dev_found - Notification of a found P2P Device 489 * @ctx: Callback context from cb_ctx 490 * @addr: Source address of the message triggering this notification 491 * @info: P2P peer information 492 * @new_device: Inform if the peer is newly found 493 * 494 * This callback is used to notify that a new P2P Device has been 495 * found. This may happen, e.g., during Search state based on scan 496 * results or during Listen state based on receive Probe Request and 497 * Group Owner Negotiation Request. 498 */ 499 void (*dev_found)(void *ctx, const u8 *addr, 500 const struct p2p_peer_info *info, 501 int new_device); 502 503 /** 504 * dev_lost - Notification of a lost P2P Device 505 * @ctx: Callback context from cb_ctx 506 * @dev_addr: P2P Device Address of the lost P2P Device 507 * 508 * This callback is used to notify that a P2P Device has been deleted. 509 */ 510 void (*dev_lost)(void *ctx, const u8 *dev_addr); 511 512 /** 513 * go_neg_req_rx - Notification of a receive GO Negotiation Request 514 * @ctx: Callback context from cb_ctx 515 * @src: Source address of the message triggering this notification 516 * @dev_passwd_id: WPS Device Password ID 517 * 518 * This callback is used to notify that a P2P Device is requesting 519 * group owner negotiation with us, but we do not have all the 520 * necessary information to start GO Negotiation. This indicates that 521 * the local user has not authorized the connection yet by providing a 522 * PIN or PBC button press. This information can be provided with a 523 * call to p2p_connect(). 524 */ 525 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 526 527 /** 528 * go_neg_completed - Notification of GO Negotiation results 529 * @ctx: Callback context from cb_ctx 530 * @res: GO Negotiation results 531 * 532 * This callback is used to notify that Group Owner Negotiation has 533 * been completed. Non-zero struct p2p_go_neg_results::status indicates 534 * failed negotiation. In case of success, this function is responsible 535 * for creating a new group interface (or using the existing interface 536 * depending on driver features), setting up the group interface in 537 * proper mode based on struct p2p_go_neg_results::role_go and 538 * initializing WPS provisioning either as a Registrar (if GO) or as an 539 * Enrollee. Successful WPS provisioning must be indicated by calling 540 * p2p_wps_success_cb(). The callee is responsible for timing out group 541 * formation if WPS provisioning cannot be completed successfully 542 * within 15 seconds. 543 */ 544 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 545 546 /** 547 * sd_request - Callback on Service Discovery Request 548 * @ctx: Callback context from cb_ctx 549 * @freq: Frequency (in MHz) of the channel 550 * @sa: Source address of the request 551 * @dialog_token: Dialog token 552 * @update_indic: Service Update Indicator from the source of request 553 * @tlvs: P2P Service Request TLV(s) 554 * @tlvs_len: Length of tlvs buffer in octets 555 * 556 * This callback is used to indicate reception of a service discovery 557 * request. Response to the query must be indicated by calling 558 * p2p_sd_response() with the context information from the arguments to 559 * this callback function. 560 * 561 * This callback handler can be set to %NULL to indicate that service 562 * discovery is not supported. 563 */ 564 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 565 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 566 567 /** 568 * sd_response - Callback on Service Discovery Response 569 * @ctx: Callback context from cb_ctx 570 * @sa: Source address of the request 571 * @update_indic: Service Update Indicator from the source of response 572 * @tlvs: P2P Service Response TLV(s) 573 * @tlvs_len: Length of tlvs buffer in octets 574 * 575 * This callback is used to indicate reception of a service discovery 576 * response. This callback handler can be set to %NULL if no service 577 * discovery requests are used. The information provided with this call 578 * is replies to the queries scheduled with p2p_sd_request(). 579 */ 580 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 581 const u8 *tlvs, size_t tlvs_len); 582 583 /** 584 * prov_disc_req - Callback on Provisiong Discovery Request 585 * @ctx: Callback context from cb_ctx 586 * @peer: Source address of the request 587 * @config_methods: Requested WPS Config Method 588 * @dev_addr: P2P Device Address of the found P2P Device 589 * @pri_dev_type: Primary Device Type 590 * @dev_name: Device Name 591 * @supp_config_methods: Supported configuration Methods 592 * @dev_capab: Device Capabilities 593 * @group_capab: Group Capabilities 594 * 595 * This callback is used to indicate reception of a Provision Discovery 596 * Request frame that the P2P module accepted. 597 */ 598 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 599 const u8 *dev_addr, const u8 *pri_dev_type, 600 const char *dev_name, u16 supp_config_methods, 601 u8 dev_capab, u8 group_capab); 602 603 /** 604 * prov_disc_resp - Callback on Provisiong Discovery Response 605 * @ctx: Callback context from cb_ctx 606 * @peer: Source address of the response 607 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 608 * 609 * This callback is used to indicate reception of a Provision Discovery 610 * Response frame for a pending request scheduled with 611 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 612 * provision discovery is not used. 613 */ 614 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 615 616 /** 617 * prov_disc_fail - Callback on Provision Discovery failure 618 * @ctx: Callback context from cb_ctx 619 * @peer: Source address of the response 620 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 621 * 622 * This callback is used to indicate either a failure or no response 623 * to an earlier provision discovery request. 624 * 625 * This callback handler can be set to %NULL if provision discovery 626 * is not used or failures do not need to be indicated. 627 */ 628 void (*prov_disc_fail)(void *ctx, const u8 *peer, 629 enum p2p_prov_disc_status status); 630 631 /** 632 * invitation_process - Optional callback for processing Invitations 633 * @ctx: Callback context from cb_ctx 634 * @sa: Source address of the Invitation Request 635 * @bssid: P2P Group BSSID from the request or %NULL if not included 636 * @go_dev_addr: GO Device Address from P2P Group ID 637 * @ssid: SSID from P2P Group ID 638 * @ssid_len: Length of ssid buffer in octets 639 * @go: Variable for returning whether the local end is GO in the group 640 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 641 * @force_freq: Variable for returning forced frequency for the group 642 * @persistent_group: Whether this is an invitation to reinvoke a 643 * persistent group (instead of invitation to join an active 644 * group) 645 * Returns: Status code (P2P_SC_*) 646 * 647 * This optional callback can be used to implement persistent reconnect 648 * by allowing automatic restarting of persistent groups without user 649 * interaction. If this callback is not implemented (i.e., is %NULL), 650 * the received Invitation Request frames are replied with 651 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 652 * invitation_result() callback. 653 * 654 * If the requested parameters are acceptable and the group is known, 655 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 656 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 657 * can be returned if there is not enough data to provide immediate 658 * response, i.e., if some sort of user interaction is needed. The 659 * invitation_received() callback will be called in that case 660 * immediately after this call. 661 */ 662 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 663 const u8 *go_dev_addr, const u8 *ssid, 664 size_t ssid_len, int *go, u8 *group_bssid, 665 int *force_freq, int persistent_group); 666 667 /** 668 * invitation_received - Callback on Invitation Request RX 669 * @ctx: Callback context from cb_ctx 670 * @sa: Source address of the Invitation Request 671 * @bssid: P2P Group BSSID or %NULL if not received 672 * @ssid: SSID of the group 673 * @ssid_len: Length of ssid in octets 674 * @go_dev_addr: GO Device Address 675 * @status: Response Status 676 * @op_freq: Operational frequency for the group 677 * 678 * This callback is used to indicate sending of an Invitation Response 679 * for a received Invitation Request. If status == 0 (success), the 680 * upper layer code is responsible for starting the group. status == 1 681 * indicates need to get user authorization for the group. Other status 682 * values indicate that the invitation request was rejected. 683 */ 684 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 685 const u8 *ssid, size_t ssid_len, 686 const u8 *go_dev_addr, u8 status, 687 int op_freq); 688 689 /** 690 * invitation_result - Callback on Invitation result 691 * @ctx: Callback context from cb_ctx 692 * @status: Negotiation result (Status Code) 693 * @bssid: P2P Group BSSID or %NULL if not received 694 * 695 * This callback is used to indicate result of an Invitation procedure 696 * started with a call to p2p_invite(). The indicated status code is 697 * the value received from the peer in Invitation Response with 0 698 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 699 * local failure in transmitting the Invitation Request. 700 */ 701 void (*invitation_result)(void *ctx, int status, const u8 *bssid); 702}; 703 704 705/* P2P module initialization/deinitialization */ 706 707/** 708 * p2p_init - Initialize P2P module 709 * @cfg: P2P module configuration 710 * Returns: Pointer to private data or %NULL on failure 711 * 712 * This function is used to initialize global P2P module context (one per 713 * device). The P2P module will keep a copy of the configuration data, so the 714 * caller does not need to maintain this structure. However, the callback 715 * functions and the context parameters to them must be kept available until 716 * the P2P module is deinitialized with p2p_deinit(). 717 */ 718struct p2p_data * p2p_init(const struct p2p_config *cfg); 719 720/** 721 * p2p_deinit - Deinitialize P2P module 722 * @p2p: P2P module context from p2p_init() 723 */ 724void p2p_deinit(struct p2p_data *p2p); 725 726/** 727 * p2p_flush - Flush P2P module state 728 * @p2p: P2P module context from p2p_init() 729 * 730 * This command removes the P2P module state like peer device entries. 731 */ 732void p2p_flush(struct p2p_data *p2p); 733 734/** 735 * p2p_unauthorize - Unauthorize the specified peer device 736 * @p2p: P2P module context from p2p_init() 737 * @addr: P2P peer entry to be unauthorized 738 * Returns: 0 on success, -1 on failure 739 * 740 * This command removes any connection authorization from the specified P2P 741 * peer device address. This can be used, e.g., to cancel effect of a previous 742 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 743 * GO Negotiation. 744 */ 745int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 746 747/** 748 * p2p_set_dev_name - Set device name 749 * @p2p: P2P module context from p2p_init() 750 * Returns: 0 on success, -1 on failure 751 * 752 * This function can be used to update the P2P module configuration with 753 * information that was not available at the time of the p2p_init() call. 754 */ 755int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 756 757int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 758int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 759int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 760int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 761 762void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 763void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 764 765/** 766 * p2p_set_pri_dev_type - Set primary device type 767 * @p2p: P2P module context from p2p_init() 768 * Returns: 0 on success, -1 on failure 769 * 770 * This function can be used to update the P2P module configuration with 771 * information that was not available at the time of the p2p_init() call. 772 */ 773int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 774 775/** 776 * p2p_set_sec_dev_types - Set secondary device types 777 * @p2p: P2P module context from p2p_init() 778 * Returns: 0 on success, -1 on failure 779 * 780 * This function can be used to update the P2P module configuration with 781 * information that was not available at the time of the p2p_init() call. 782 */ 783int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 784 size_t num_dev_types); 785 786int p2p_set_country(struct p2p_data *p2p, const char *country); 787 788 789/* Commands from upper layer management entity */ 790 791enum p2p_discovery_type { 792 P2P_FIND_START_WITH_FULL, 793 P2P_FIND_ONLY_SOCIAL, 794 P2P_FIND_PROGRESSIVE 795}; 796 797/** 798 * p2p_find - Start P2P Find (Device Discovery) 799 * @p2p: P2P module context from p2p_init() 800 * @timeout: Timeout for find operation in seconds or 0 for no timeout 801 * @type: Device Discovery type 802 * @num_req_dev_types: Number of requested device types 803 * @req_dev_types: Requested device types array, must be an array 804 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 805 * requested device types. 806 * Returns: 0 on success, -1 on failure 807 */ 808int p2p_find(struct p2p_data *p2p, unsigned int timeout, 809 enum p2p_discovery_type type, 810 unsigned int num_req_dev_types, const u8 *req_dev_types); 811 812/** 813 * p2p_stop_find - Stop P2P Find (Device Discovery) 814 * @p2p: P2P module context from p2p_init() 815 */ 816void p2p_stop_find(struct p2p_data *p2p); 817 818/** 819 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 820 * @p2p: P2P module context from p2p_init() 821 * @freq: Frequency in MHz for next operation 822 * 823 * This is like p2p_stop_find(), but Listen state is not stopped if we are 824 * already on the same frequency. 825 */ 826void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 827 828/** 829 * p2p_listen - Start P2P Listen state for specified duration 830 * @p2p: P2P module context from p2p_init() 831 * @timeout: Listen state duration in milliseconds 832 * Returns: 0 on success, -1 on failure 833 * 834 * This function can be used to request the P2P module to keep the device 835 * discoverable on the listen channel for an extended set of time. At least in 836 * its current form, this is mainly used for testing purposes and may not be of 837 * much use for normal P2P operations. 838 */ 839int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 840 841/** 842 * p2p_connect - Start P2P group formation (GO negotiation) 843 * @p2p: P2P module context from p2p_init() 844 * @peer_addr: MAC address of the peer P2P client 845 * @wps_method: WPS method to be used in provisioning 846 * @go_intent: Local GO intent value (1..15) 847 * @own_interface_addr: Intended interface address to use with the group 848 * @force_freq: The only allowed channel frequency in MHz or 0 849 * @persistent_group: Whether to create a persistent group 850 * Returns: 0 on success, -1 on failure 851 */ 852int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 853 enum p2p_wps_method wps_method, 854 int go_intent, const u8 *own_interface_addr, 855 unsigned int force_freq, int persistent_group); 856 857/** 858 * p2p_authorize - Authorize P2P group formation (GO negotiation) 859 * @p2p: P2P module context from p2p_init() 860 * @peer_addr: MAC address of the peer P2P client 861 * @wps_method: WPS method to be used in provisioning 862 * @go_intent: Local GO intent value (1..15) 863 * @own_interface_addr: Intended interface address to use with the group 864 * @force_freq: The only allowed channel frequency in MHz or 0 865 * @persistent_group: Whether to create a persistent group 866 * Returns: 0 on success, -1 on failure 867 * 868 * This is like p2p_connect(), but the actual group negotiation is not 869 * initiated automatically, i.e., the other end is expected to do that. 870 */ 871int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 872 enum p2p_wps_method wps_method, 873 int go_intent, const u8 *own_interface_addr, 874 unsigned int force_freq, int persistent_group); 875 876/** 877 * p2p_reject - Reject peer device (explicitly block connection attempts) 878 * @p2p: P2P module context from p2p_init() 879 * @peer_addr: MAC address of the peer P2P client 880 * Returns: 0 on success, -1 on failure 881 */ 882int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 883 884/** 885 * p2p_prov_disc_req - Send Provision Discovery Request 886 * @p2p: P2P module context from p2p_init() 887 * @peer_addr: MAC address of the peer P2P client 888 * @config_methods: WPS Config Methods value (only one bit set) 889 * @join: Whether this is used by a client joining an active group 890 * Returns: 0 on success, -1 on failure 891 * 892 * This function can be used to request a discovered P2P peer to display a PIN 893 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 894 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 895 * is transmitted once immediately and if no response is received, the frame 896 * will be sent again whenever the target device is discovered during device 897 * dsicovery (start with a p2p_find() call). Response from the peer is 898 * indicated with the p2p_config::prov_disc_resp() callback. 899 */ 900int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 901 u16 config_methods, int join); 902 903/** 904 * p2p_sd_request - Schedule a service discovery query 905 * @p2p: P2P module context from p2p_init() 906 * @dst: Destination peer or %NULL to apply for all peers 907 * @tlvs: P2P Service Query TLV(s) 908 * Returns: Reference to the query or %NULL on failure 909 * 910 * Response to the query is indicated with the p2p_config::sd_response() 911 * callback. 912 */ 913void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 914 const struct wpabuf *tlvs); 915 916/** 917 * p2p_sd_cancel_request - Cancel a pending service discovery query 918 * @p2p: P2P module context from p2p_init() 919 * @req: Query reference from p2p_sd_request() 920 * Returns: 0 if request for cancelled; -1 if not found 921 */ 922int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 923 924/** 925 * p2p_sd_response - Send response to a service discovery query 926 * @p2p: P2P module context from p2p_init() 927 * @freq: Frequency from p2p_config::sd_request() callback 928 * @dst: Destination address from p2p_config::sd_request() callback 929 * @dialog_token: Dialog token from p2p_config::sd_request() callback 930 * @resp_tlvs: P2P Service Response TLV(s) 931 * 932 * This function is called as a response to the request indicated with 933 * p2p_config::sd_request() callback. 934 */ 935void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 936 u8 dialog_token, const struct wpabuf *resp_tlvs); 937 938/** 939 * p2p_sd_service_update - Indicate a change in local services 940 * @p2p: P2P module context from p2p_init() 941 * 942 * This function needs to be called whenever there is a change in availability 943 * of the local services. This will increment the Service Update Indicator 944 * value which will be used in SD Request and Response frames. 945 */ 946void p2p_sd_service_update(struct p2p_data *p2p); 947 948 949enum p2p_invite_role { 950 P2P_INVITE_ROLE_GO, 951 P2P_INVITE_ROLE_ACTIVE_GO, 952 P2P_INVITE_ROLE_CLIENT 953}; 954 955/** 956 * p2p_invite - Invite a P2P Device into a group 957 * @p2p: P2P module context from p2p_init() 958 * @peer: Device Address of the peer P2P Device 959 * @role: Local role in the group 960 * @bssid: Group BSSID or %NULL if not known 961 * @ssid: Group SSID 962 * @ssid_len: Length of ssid in octets 963 * @force_freq: The only allowed channel frequency in MHz or 0 964 * @go_dev_addr: Forced GO Device Address or %NULL if none 965 * @persistent_group: Whether this is to reinvoke a persistent group 966 * Returns: 0 on success, -1 on failure 967 */ 968int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 969 const u8 *bssid, const u8 *ssid, size_t ssid_len, 970 unsigned int force_freq, const u8 *go_dev_addr, 971 int persistent_group); 972 973/** 974 * p2p_presence_req - Request GO presence 975 * @p2p: P2P module context from p2p_init() 976 * @go_interface_addr: GO P2P Interface Address 977 * @own_interface_addr: Own P2P Interface Address for this group 978 * @freq: Group operating frequence (in MHz) 979 * @duration1: Preferred presence duration in microseconds 980 * @interval1: Preferred presence interval in microseconds 981 * @duration2: Acceptable presence duration in microseconds 982 * @interval2: Acceptable presence interval in microseconds 983 * Returns: 0 on success, -1 on failure 984 * 985 * If both duration and interval values are zero, the parameter pair is not 986 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 987 */ 988int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 989 const u8 *own_interface_addr, unsigned int freq, 990 u32 duration1, u32 interval1, u32 duration2, 991 u32 interval2); 992 993/** 994 * p2p_ext_listen - Set Extended Listen Timing 995 * @p2p: P2P module context from p2p_init() 996 * @freq: Group operating frequence (in MHz) 997 * @period: Availability period in milliseconds (1-65535; 0 to disable) 998 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 999 * Returns: 0 on success, -1 on failure 1000 * 1001 * This function can be used to enable or disable (period = interval = 0) 1002 * Extended Listen Timing. When enabled, the P2P Device will become 1003 * discoverable (go into Listen State) every @interval milliseconds for at 1004 * least @period milliseconds. 1005 */ 1006int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1007 unsigned int interval); 1008 1009/* Event notifications from upper layer management operations */ 1010 1011/** 1012 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1013 * @p2p: P2P module context from p2p_init() 1014 * @mac_addr: Peer address 1015 * 1016 * This function is used to report successfully completed WPS provisioning 1017 * during group formation in both GO/Registrar and client/Enrollee roles. 1018 */ 1019void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1020 1021/** 1022 * p2p_group_formation_failed - Report failed WPS provisioning 1023 * @p2p: P2P module context from p2p_init() 1024 * 1025 * This function is used to report failed group formation. This can happen 1026 * either due to failed WPS provisioning or due to 15 second timeout during 1027 * the provisioning phase. 1028 */ 1029void p2p_group_formation_failed(struct p2p_data *p2p); 1030 1031 1032/* Event notifications from lower layer driver operations */ 1033 1034/** 1035 * p2p_probe_req_rx - Report reception of a Probe Request frame 1036 * @p2p: P2P module context from p2p_init() 1037 * @addr: Source MAC address 1038 * @ie: Information elements from the Probe Request frame body 1039 * @ie_len: Length of ie buffer in octets 1040 * Returns: 0 to indicate the frame was not processed or 1 if it was 1041 */ 1042int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie, 1043 size_t ie_len); 1044 1045/** 1046 * p2p_rx_action - Report received Action frame 1047 * @p2p: P2P module context from p2p_init() 1048 * @da: Destination address of the received Action frame 1049 * @sa: Source address of the received Action frame 1050 * @bssid: Address 3 of the received Action frame 1051 * @category: Category of the received Action frame 1052 * @data: Action frame body after the Category field 1053 * @len: Length of the data buffer in octets 1054 * @freq: Frequency (in MHz) on which the frame was received 1055 */ 1056void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1057 const u8 *bssid, u8 category, 1058 const u8 *data, size_t len, int freq); 1059 1060/** 1061 * p2p_scan_res_handler - Indicate a P2P scan results 1062 * @p2p: P2P module context from p2p_init() 1063 * @bssid: BSSID of the scan result 1064 * @freq: Frequency of the channel on which the device was found in MHz 1065 * @level: Signal level (signal strength of the received Beacon/Probe Response 1066 * frame) 1067 * @ies: Pointer to IEs from the scan result 1068 * @ies_len: Length of the ies buffer 1069 * Returns: 0 to continue or 1 to stop scan result indication 1070 * 1071 * This function is called to indicate a scan result entry with P2P IE from a 1072 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1073 * the actual scan process (i.e., whenever a new device is found) or as a 1074 * sequence of calls after the full scan has been completed. The former option 1075 * can result in optimized operations, but may not be supported by all 1076 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1077 * but it is recommended to include all IEs received from the device. The 1078 * caller does not need to check that the IEs contain a P2P IE before calling 1079 * this function since frames will be filtered internally if needed. 1080 * 1081 * This function will return 1 if it wants to stop scan result iteration (and 1082 * scan in general if it is still in progress). This is used to allow faster 1083 * start of a pending operation, e.g., to start a pending GO negotiation. 1084 */ 1085int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1086 int level, const u8 *ies, size_t ies_len); 1087 1088/** 1089 * p2p_scan_res_handled - Indicate end of scan results 1090 * @p2p: P2P module context from p2p_init() 1091 * 1092 * This function is called to indicate that all P2P scan results from a scan 1093 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1094 * function must be called as a response to successful 1095 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1096 * calls stopped iteration. 1097 */ 1098void p2p_scan_res_handled(struct p2p_data *p2p); 1099 1100enum p2p_send_action_result { 1101 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1102 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1103 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1104}; 1105 1106/** 1107 * p2p_send_action_cb - Notify TX status of an Action frame 1108 * @p2p: P2P module context from p2p_init() 1109 * @freq: Channel frequency in MHz 1110 * @dst: Destination MAC address (Address 1) 1111 * @src: Source MAC address (Address 2) 1112 * @bssid: BSSID (Address 3) 1113 * @result: Result of the transmission attempt 1114 * 1115 * This function is used to indicate the result of an Action frame transmission 1116 * that was requested with struct p2p_config::send_action() callback. 1117 */ 1118void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1119 const u8 *src, const u8 *bssid, 1120 enum p2p_send_action_result result); 1121 1122/** 1123 * p2p_listen_cb - Indicate the start of a requested Listen state 1124 * @p2p: P2P module context from p2p_init() 1125 * @freq: Listen channel frequency in MHz 1126 * @duration: Duration for the Listen state in milliseconds 1127 * 1128 * This function is used to indicate that a Listen state requested with 1129 * struct p2p_config::start_listen() callback has started. 1130 */ 1131void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1132 unsigned int duration); 1133 1134/** 1135 * p2p_listen_end - Indicate the end of a requested Listen state 1136 * @p2p: P2P module context from p2p_init() 1137 * @freq: Listen channel frequency in MHz 1138 * Returns: 0 if no operations were started, 1 if an operation was started 1139 * 1140 * This function is used to indicate that a Listen state requested with 1141 * struct p2p_config::start_listen() callback has ended. 1142 */ 1143int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1144 1145void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1146 const u8 *ie, size_t ie_len); 1147 1148void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1149 const u8 *ie, size_t ie_len); 1150 1151 1152/* Per-group P2P state for GO */ 1153 1154struct p2p_group; 1155 1156/** 1157 * struct p2p_group_config - P2P group configuration 1158 * 1159 * This configuration is provided to the P2P module during initialization of 1160 * the per-group information with p2p_group_init(). 1161 */ 1162struct p2p_group_config { 1163 /** 1164 * persistent_group - Whether the group is persistent 1165 */ 1166 int persistent_group; 1167 1168 /** 1169 * interface_addr - P2P Interface Address of the group 1170 */ 1171 u8 interface_addr[ETH_ALEN]; 1172 1173 /** 1174 * max_clients - Maximum number of clients in the group 1175 */ 1176 unsigned int max_clients; 1177 1178 /** 1179 * cb_ctx - Context to use with callback functions 1180 */ 1181 void *cb_ctx; 1182 1183 /** 1184 * ie_update - Notification of IE update 1185 * @ctx: Callback context from cb_ctx 1186 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1187 * @proberesp_ies: P2P Ie for Probe Response frames 1188 * 1189 * P2P module uses this callback function to notify whenever the P2P IE 1190 * in Beacon or Probe Response frames should be updated based on group 1191 * events. 1192 * 1193 * The callee is responsible for freeing the returned buffer(s) with 1194 * wpabuf_free(). 1195 */ 1196 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1197 struct wpabuf *proberesp_ies); 1198 1199 /** 1200 * idle_update - Notification of changes in group idle state 1201 * @ctx: Callback context from cb_ctx 1202 * @idle: Whether the group is idle (no associated stations) 1203 */ 1204 void (*idle_update)(void *ctx, int idle); 1205}; 1206 1207/** 1208 * p2p_group_init - Initialize P2P group 1209 * @p2p: P2P module context from p2p_init() 1210 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1211 * Returns: Pointer to private data or %NULL on failure 1212 * 1213 * This function is used to initialize per-group P2P module context. Currently, 1214 * this is only used to manage GO functionality and P2P clients do not need to 1215 * create an instance of this per-group information. 1216 */ 1217struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1218 struct p2p_group_config *config); 1219 1220/** 1221 * p2p_group_deinit - Deinitialize P2P group 1222 * @group: P2P group context from p2p_group_init() 1223 */ 1224void p2p_group_deinit(struct p2p_group *group); 1225 1226/** 1227 * p2p_group_notif_assoc - Notification of P2P client association with GO 1228 * @group: P2P group context from p2p_group_init() 1229 * @addr: Interface address of the P2P client 1230 * @ie: IEs from the (Re)association Request frame 1231 * @len: Length of the ie buffer in octets 1232 * Returns: 0 on success, -1 on failure 1233 */ 1234int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1235 const u8 *ie, size_t len); 1236 1237/** 1238 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1239 * @group: P2P group context from p2p_group_init() 1240 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1241 * Returns: P2P IE for (Re)association Response or %NULL on failure 1242 * 1243 * The caller is responsible for freeing the returned buffer with 1244 * wpabuf_free(). 1245 */ 1246struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1247 1248/** 1249 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1250 * @group: P2P group context from p2p_group_init() 1251 * @addr: Interface address of the P2P client 1252 */ 1253void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1254 1255/** 1256 * p2p_group_notif_formation_done - Notification of completed group formation 1257 * @group: P2P group context from p2p_group_init() 1258 */ 1259void p2p_group_notif_formation_done(struct p2p_group *group); 1260 1261/** 1262 * p2p_group_notif_noa - Notification of NoA change 1263 * @group: P2P group context from p2p_group_init() 1264 * @noa: Notice of Absence attribute payload, %NULL if none 1265 * @noa_len: Length of noa buffer in octets 1266 * Returns: 0 on success, -1 on failure 1267 * 1268 * Notify the P2P group management about a new NoA contents. This will be 1269 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1270 * the group information. 1271 */ 1272int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1273 size_t noa_len); 1274 1275/** 1276 * p2p_group_match_dev_type - Match device types in group with requested type 1277 * @group: P2P group context from p2p_group_init() 1278 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1279 * Returns: 1 on match, 0 on mismatch 1280 * 1281 * This function can be used to match the Requested Device Type attribute in 1282 * WPS IE with the device types of a group member for deciding whether a GO 1283 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1284 * is not requested any specific device type. 1285 */ 1286int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1287 1288/** 1289 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1290 * @group: P2P group context from p2p_group_init() 1291 * Returns: 0 on success (frame scheduled); -1 if client was not found 1292 */ 1293int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1294 const u8 *searching_dev, int rx_freq); 1295 1296 1297/* Generic helper functions */ 1298 1299/** 1300 * p2p_ie_text - Build text format description of P2P IE 1301 * @p2p_ie: P2P IE 1302 * @buf: Buffer for returning text 1303 * @end: Pointer to the end of the buf area 1304 * Returns: Number of octets written to the buffer or -1 on failure 1305 * 1306 * This function can be used to parse P2P IE contents into text format 1307 * field=value lines. 1308 */ 1309int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1310 1311/** 1312 * p2p_scan_result_text - Build text format description of P2P IE 1313 * @ies: Information elements from scan results 1314 * @ies_len: ies buffer length in octets 1315 * @buf: Buffer for returning text 1316 * @end: Pointer to the end of the buf area 1317 * Returns: Number of octets written to the buffer or -1 on failure 1318 * 1319 * This function can be used to parse P2P IE contents into text format 1320 * field=value lines. 1321 */ 1322int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1323 1324/** 1325 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1326 * @p2p: P2P module context from p2p_init() 1327 * @bssid: BSSID 1328 * @buf: Buffer for writing the P2P IE 1329 * @len: Maximum buf length in octets 1330 * @p2p_group: Whether this is for association with a P2P GO 1331 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1332 * Returns: Number of octets written into buf or -1 on failure 1333 */ 1334int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1335 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1336 1337/** 1338 * p2p_scan_ie - Build P2P IE for Probe Request 1339 * @p2p: P2P module context from p2p_init() 1340 * @ies: Buffer for writing P2P IE 1341 */ 1342void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies); 1343 1344/** 1345 * p2p_go_params - Generate random P2P group parameters 1346 * @p2p: P2P module context from p2p_init() 1347 * @params: Buffer for parameters 1348 * Returns: 0 on success, -1 on failure 1349 */ 1350int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1351 1352/** 1353 * p2p_get_group_capab - Get Group Capability from P2P IE data 1354 * @p2p_ie: P2P IE(s) contents 1355 * Returns: Group Capability 1356 */ 1357u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1358 1359/** 1360 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1361 * @p2p_ie: P2P IE(s) contents 1362 * Returns: 0 if cross connection is allow, 1 if not 1363 */ 1364int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1365 1366/** 1367 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1368 * @p2p_ie: P2P IE(s) contents 1369 * Returns: Pointer to P2P Device Address or %NULL if not included 1370 */ 1371const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1372 1373/** 1374 * p2p_get_peer_info - Get P2P peer information in text format 1375 * @p2p: P2P module context from p2p_init() 1376 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1377 * @next: Whether to select the peer entry following the one indicated by addr 1378 * @buf: Buffer for returning text 1379 * @buflen: Maximum buffer length 1380 * Returns: Number of octets written to the buffer or -1 on failure 1381 */ 1382int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next, 1383 char *buf, size_t buflen); 1384 1385/** 1386 * p2p_set_client_discoverability - Set client discoverability capability 1387 * @p2p: P2P module context from p2p_init() 1388 * @enabled: Whether client discoverability will be enabled 1389 * 1390 * This function can be used to disable (and re-enable) client discoverability. 1391 * This capability is enabled by default and should not be disabled in normal 1392 * use cases, i.e., this is mainly for testing purposes. 1393 */ 1394void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1395 1396/** 1397 * p2p_set_manageD_oper - Set managed P2P Device operations capability 1398 * @p2p: P2P module context from p2p_init() 1399 * @enabled: Whether managed P2P Device operations will be enabled 1400 */ 1401void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1402 1403int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1404 1405int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1406 1407int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1408 u8 *iface_addr); 1409int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1410 u8 *dev_addr); 1411 1412void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1413 1414/** 1415 * p2p_set_cross_connect - Set cross connection capability 1416 * @p2p: P2P module context from p2p_init() 1417 * @enabled: Whether cross connection will be enabled 1418 */ 1419void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1420 1421int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1422 1423int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level, 1424 const u8 *ies, size_t ies_len); 1425 1426/** 1427 * p2p_set_intra_bss_dist - Set intra BSS distribution 1428 * @p2p: P2P module context from p2p_init() 1429 * @enabled: Whether intra BSS distribution will be enabled 1430 */ 1431void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1432 1433/** 1434 * p2p_supported_freq - Check whether channel is supported for P2P 1435 * @p2p: P2P module context from p2p_init() 1436 * @freq: Channel frequency in MHz 1437 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1438 */ 1439int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1440 1441void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1442 1443/** 1444 * p2p_set_best_channels - Update best channel information 1445 * @p2p: P2P module context from p2p_init() 1446 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1447 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1448 * @freq_overall: Frequency (MHz) of best channel overall 1449 */ 1450void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1451 int freq_overall); 1452 1453const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1454 1455/** 1456 * p2p_get_group_num_members - Get number of members in group 1457 * @group: P2P group context from p2p_group_init() 1458 * Returns: Number of members in the group 1459 */ 1460unsigned int p2p_get_group_num_members(struct p2p_group *group); 1461 1462/** 1463 * p2p_iterate_group_members - Iterate group members 1464 * @group: P2P group context from p2p_group_init() 1465 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1466 * on the first call and not modified later 1467 * Returns: A P2P Interface Address for each call and %NULL for no more members 1468 */ 1469const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1470 1471/** 1472 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1473 * @p2p: P2P module context from p2p_init() 1474 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1475 * @next: Whether to select the peer entry following the one indicated by addr 1476 * Returns: The first P2P peer info available or %NULL if no such peer exists 1477 */ 1478const struct p2p_peer_info * 1479p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1480 1481/** 1482 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1483 * @p2p: P2P module context from p2p_init() 1484 */ 1485void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1486 1487/** 1488 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1489 * @p2p: P2P module context from p2p_init() 1490 * @vendor_ext: The vendor extensions to add 1491 * Returns: 0 on success, -1 on failure 1492 * 1493 * The wpabuf structures in the array are owned by the P2P 1494 * module after this call. 1495 */ 1496int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1497 const struct wpabuf *vendor_ext); 1498 1499/** 1500 * p2p_set_oper_channel - Set the P2P operating channel 1501 * @p2p: P2P module context from p2p_init() 1502 * @op_reg_class: Operating regulatory class to set 1503 * @op_channel: operating channel to set 1504 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1505 * Returns: 0 on success, -1 on failure 1506 */ 1507int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1508 int cfg_op_channel); 1509 1510#endif /* P2P_H */ 1511