p2p.h revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a
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_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 * 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 135struct p2p_data; 136 137enum 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 */ 149struct 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 221enum p2p_prov_disc_status { 222 P2P_PROV_DISC_SUCCESS, 223 P2P_PROV_DISC_TIMEOUT, 224 P2P_PROV_DISC_REJECTED, 225}; 226 227/** 228 * struct p2p_config - P2P configuration 229 * 230 * This configuration is provided to the P2P module during initialization with 231 * p2p_init(). 232 */ 233struct p2p_config { 234 /** 235 * country - Country code to use in P2P operations 236 */ 237 char country[3]; 238 239 /** 240 * reg_class - Regulatory class for own listen channel 241 */ 242 u8 reg_class; 243 244 /** 245 * channel - Own listen channel 246 */ 247 u8 channel; 248 249 /** 250 * Regulatory class for own operational channel 251 */ 252 u8 op_reg_class; 253 254 /** 255 * op_channel - Own operational channel 256 */ 257 u8 op_channel; 258 259 /** 260 * cfg_op_channel - Whether op_channel is hardcoded in configuration 261 */ 262 u8 cfg_op_channel; 263 264 /** 265 * channels - Own supported regulatory classes and channels 266 * 267 * List of supposerted channels per regulatory class. The regulatory 268 * classes are defined in IEEE Std 802.11-2007 Annex J and the 269 * numbering of the clases depends on the configured country code. 270 */ 271 struct p2p_channels channels; 272 273 /** 274 * pri_dev_type - Primary Device Type (see WPS) 275 */ 276 u8 pri_dev_type[8]; 277 278 /** 279 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types 280 */ 281#define P2P_SEC_DEVICE_TYPES 5 282 283 /** 284 * sec_dev_type - Optional secondary device types 285 */ 286 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8]; 287 288 /** 289 * num_sec_dev_types - Number of sec_dev_type entries 290 */ 291 size_t num_sec_dev_types; 292 293 /** 294 * dev_addr - P2P Device Address 295 */ 296 u8 dev_addr[ETH_ALEN]; 297 298 /** 299 * dev_name - Device Name 300 */ 301 char *dev_name; 302 303 char *manufacturer; 304 char *model_name; 305 char *model_number; 306 char *serial_number; 307 308 u8 uuid[16]; 309 u16 config_methods; 310 311 /** 312 * concurrent_operations - Whether concurrent operations are supported 313 */ 314 int concurrent_operations; 315 316 /** 317 * max_peers - Maximum number of discovered peers to remember 318 * 319 * If more peers are discovered, older entries will be removed to make 320 * room for the new ones. 321 */ 322 size_t max_peers; 323 324 /** 325 * p2p_intra_bss - Intra BSS communication is supported 326 */ 327 int p2p_intra_bss; 328 329 /** 330 * ssid_postfix - Postfix data to add to the SSID 331 * 332 * This data will be added to the end of the SSID after the 333 * DIRECT-<random two octets> prefix. 334 */ 335 u8 ssid_postfix[32 - 9]; 336 337 /** 338 * ssid_postfix_len - Length of the ssid_postfix data 339 */ 340 size_t ssid_postfix_len; 341 342 /** 343 * msg_ctx - Context to use with wpa_msg() calls 344 */ 345 void *msg_ctx; 346 347 /** 348 * cb_ctx - Context to use with callback functions 349 */ 350 void *cb_ctx; 351 352 353 /* Callbacks to request lower layer driver operations */ 354 355 /** 356 * p2p_scan - Request a P2P scan/search 357 * @ctx: Callback context from cb_ctx 358 * @type: Scan type 359 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 360 * @num_req_dev_types: Number of requested device types 361 * @req_dev_types: Array containing requested device types 362 * Returns: 0 on success, -1 on failure 363 * 364 * This callback function is used to request a P2P scan or search 365 * operation to be completed. Type type argument specifies which type 366 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 367 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 368 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC 369 * request a scan of a single channel specified by freq. 370 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 371 * plus one extra channel specified by freq. 372 * 373 * The full scan is used for the initial scan to find group owners from 374 * all. The other types are used during search phase scan of the social 375 * channels (with potential variation if the Listen channel of the 376 * target peer is known or if other channels are scanned in steps). 377 * 378 * The scan results are returned after this call by calling 379 * p2p_scan_res_handler() for each scan result that has a P2P IE and 380 * then calling p2p_scan_res_handled() to indicate that all scan 381 * results have been indicated. 382 */ 383 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 384 unsigned int num_req_dev_types, 385 const u8 *req_dev_types); 386 387 /** 388 * send_probe_resp - Transmit a Probe Response frame 389 * @ctx: Callback context from cb_ctx 390 * @buf: Probe Response frame (including the header and body) 391 * Returns: 0 on success, -1 on failure 392 * 393 * This function is used to reply to Probe Request frames that were 394 * indicated with a call to p2p_probe_req_rx(). The response is to be 395 * sent on the same channel or to be dropped if the driver is not 396 * anymore listening to Probe Request frames. 397 * 398 * Alternatively, the responsibility for building the Probe Response 399 * frames in Listen state may be in another system component in which 400 * case this function need to be implemented (i.e., the function 401 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 402 * Response frames in such a case are available from the 403 * start_listen() callback. It should be noted that the received Probe 404 * Request frames must be indicated by calling p2p_probe_req_rx() even 405 * if this send_probe_resp() is not used. 406 */ 407 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 408 409 /** 410 * send_action - Transmit an Action frame 411 * @ctx: Callback context from cb_ctx 412 * @freq: Frequency in MHz for the channel on which to transmit 413 * @dst: Destination MAC address (Address 1) 414 * @src: Source MAC address (Address 2) 415 * @bssid: BSSID (Address 3) 416 * @buf: Frame body (starting from Category field) 417 * @len: Length of buf in octets 418 * @wait_time: How many msec to wait for a response frame 419 * Returns: 0 on success, -1 on failure 420 * 421 * The Action frame may not be transmitted immediately and the status 422 * of the transmission must be reported by calling 423 * p2p_send_action_cb() once the frame has either been transmitted or 424 * it has been dropped due to excessive retries or other failure to 425 * transmit. 426 */ 427 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 428 const u8 *src, const u8 *bssid, const u8 *buf, 429 size_t len, unsigned int wait_time); 430 431 /** 432 * send_action_done - Notify that Action frame sequence was completed 433 * @ctx: Callback context from cb_ctx 434 * 435 * This function is called when the Action frame sequence that was 436 * started with send_action() has been completed, i.e., when there is 437 * no need to wait for a response from the destination peer anymore. 438 */ 439 void (*send_action_done)(void *ctx); 440 441 /** 442 * start_listen - Start Listen state 443 * @ctx: Callback context from cb_ctx 444 * @freq: Frequency of the listen channel in MHz 445 * @duration: Duration for the Listen state in milliseconds 446 * @probe_resp_ie: IE(s) to be added to Probe Response frames 447 * Returns: 0 on success, -1 on failure 448 * 449 * This Listen state may not start immediately since the driver may 450 * have other pending operations to complete first. Once the Listen 451 * state has started, p2p_listen_cb() must be called to notify the P2P 452 * module. Once the Listen state is stopped, p2p_listen_end() must be 453 * called to notify the P2P module that the driver is not in the Listen 454 * state anymore. 455 * 456 * If the send_probe_resp() is not used for generating the response, 457 * the IEs from probe_resp_ie need to be added to the end of the Probe 458 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 459 * information can be ignored. 460 */ 461 int (*start_listen)(void *ctx, unsigned int freq, 462 unsigned int duration, 463 const struct wpabuf *probe_resp_ie); 464 /** 465 * stop_listen - Stop Listen state 466 * @ctx: Callback context from cb_ctx 467 * 468 * This callback can be used to stop a Listen state operation that was 469 * previously requested with start_listen(). 470 */ 471 void (*stop_listen)(void *ctx); 472 473 /** 474 * get_noa - Get current Notice of Absence attribute payload 475 * @ctx: Callback context from cb_ctx 476 * @interface_addr: P2P Interface Address of the GO 477 * @buf: Buffer for returning NoA 478 * @buf_len: Buffer length in octets 479 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 480 * advertized, or -1 on failure 481 * 482 * This function is used to fetch the current Notice of Absence 483 * attribute value from GO. 484 */ 485 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 486 size_t buf_len); 487 488 /* Callbacks to notify events to upper layer management entity */ 489 490 /** 491 * dev_found - Notification of a found P2P Device 492 * @ctx: Callback context from cb_ctx 493 * @addr: Source address of the message triggering this notification 494 * @info: P2P peer information 495 * @new_device: Inform if the peer is newly found 496 * 497 * This callback is used to notify that a new P2P Device has been 498 * found. This may happen, e.g., during Search state based on scan 499 * results or during Listen state based on receive Probe Request and 500 * Group Owner Negotiation Request. 501 */ 502 void (*dev_found)(void *ctx, const u8 *addr, 503 const struct p2p_peer_info *info, 504 int new_device); 505 506 /** 507 * dev_lost - Notification of a lost P2P Device 508 * @ctx: Callback context from cb_ctx 509 * @dev_addr: P2P Device Address of the lost P2P Device 510 * 511 * This callback is used to notify that a P2P Device has been deleted. 512 */ 513 void (*dev_lost)(void *ctx, const u8 *dev_addr); 514 515 /** 516 * go_neg_req_rx - Notification of a receive GO Negotiation Request 517 * @ctx: Callback context from cb_ctx 518 * @src: Source address of the message triggering this notification 519 * @dev_passwd_id: WPS Device Password ID 520 * 521 * This callback is used to notify that a P2P Device is requesting 522 * group owner negotiation with us, but we do not have all the 523 * necessary information to start GO Negotiation. This indicates that 524 * the local user has not authorized the connection yet by providing a 525 * PIN or PBC button press. This information can be provided with a 526 * call to p2p_connect(). 527 */ 528 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 529 530 /** 531 * go_neg_completed - Notification of GO Negotiation results 532 * @ctx: Callback context from cb_ctx 533 * @res: GO Negotiation results 534 * 535 * This callback is used to notify that Group Owner Negotiation has 536 * been completed. Non-zero struct p2p_go_neg_results::status indicates 537 * failed negotiation. In case of success, this function is responsible 538 * for creating a new group interface (or using the existing interface 539 * depending on driver features), setting up the group interface in 540 * proper mode based on struct p2p_go_neg_results::role_go and 541 * initializing WPS provisioning either as a Registrar (if GO) or as an 542 * Enrollee. Successful WPS provisioning must be indicated by calling 543 * p2p_wps_success_cb(). The callee is responsible for timing out group 544 * formation if WPS provisioning cannot be completed successfully 545 * within 15 seconds. 546 */ 547 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 548 549 /** 550 * sd_request - Callback on Service Discovery Request 551 * @ctx: Callback context from cb_ctx 552 * @freq: Frequency (in MHz) of the channel 553 * @sa: Source address of the request 554 * @dialog_token: Dialog token 555 * @update_indic: Service Update Indicator from the source of request 556 * @tlvs: P2P Service Request TLV(s) 557 * @tlvs_len: Length of tlvs buffer in octets 558 * 559 * This callback is used to indicate reception of a service discovery 560 * request. Response to the query must be indicated by calling 561 * p2p_sd_response() with the context information from the arguments to 562 * this callback function. 563 * 564 * This callback handler can be set to %NULL to indicate that service 565 * discovery is not supported. 566 */ 567 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 568 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 569 570 /** 571 * sd_response - Callback on Service Discovery Response 572 * @ctx: Callback context from cb_ctx 573 * @sa: Source address of the request 574 * @update_indic: Service Update Indicator from the source of response 575 * @tlvs: P2P Service Response TLV(s) 576 * @tlvs_len: Length of tlvs buffer in octets 577 * 578 * This callback is used to indicate reception of a service discovery 579 * response. This callback handler can be set to %NULL if no service 580 * discovery requests are used. The information provided with this call 581 * is replies to the queries scheduled with p2p_sd_request(). 582 */ 583 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 584 const u8 *tlvs, size_t tlvs_len); 585 586 /** 587 * prov_disc_req - Callback on Provisiong Discovery Request 588 * @ctx: Callback context from cb_ctx 589 * @peer: Source address of the request 590 * @config_methods: Requested WPS Config Method 591 * @dev_addr: P2P Device Address of the found P2P Device 592 * @pri_dev_type: Primary Device Type 593 * @dev_name: Device Name 594 * @supp_config_methods: Supported configuration Methods 595 * @dev_capab: Device Capabilities 596 * @group_capab: Group Capabilities 597 * @group_id: P2P Group ID (or %NULL if not included) 598 * @group_id_len: Length of P2P Group ID 599 * 600 * This callback is used to indicate reception of a Provision Discovery 601 * Request frame that the P2P module accepted. 602 */ 603 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 604 const u8 *dev_addr, const u8 *pri_dev_type, 605 const char *dev_name, u16 supp_config_methods, 606 u8 dev_capab, u8 group_capab, 607 const u8 *group_id, size_t group_id_len); 608 609 /** 610 * prov_disc_resp - Callback on Provisiong Discovery Response 611 * @ctx: Callback context from cb_ctx 612 * @peer: Source address of the response 613 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 614 * 615 * This callback is used to indicate reception of a Provision Discovery 616 * Response frame for a pending request scheduled with 617 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 618 * provision discovery is not used. 619 */ 620 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 621 622 /** 623 * prov_disc_fail - Callback on Provision Discovery failure 624 * @ctx: Callback context from cb_ctx 625 * @peer: Source address of the response 626 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 627 * 628 * This callback is used to indicate either a failure or no response 629 * to an earlier provision discovery request. 630 * 631 * This callback handler can be set to %NULL if provision discovery 632 * is not used or failures do not need to be indicated. 633 */ 634 void (*prov_disc_fail)(void *ctx, const u8 *peer, 635 enum p2p_prov_disc_status status); 636 637 /** 638 * invitation_process - Optional callback for processing Invitations 639 * @ctx: Callback context from cb_ctx 640 * @sa: Source address of the Invitation Request 641 * @bssid: P2P Group BSSID from the request or %NULL if not included 642 * @go_dev_addr: GO Device Address from P2P Group ID 643 * @ssid: SSID from P2P Group ID 644 * @ssid_len: Length of ssid buffer in octets 645 * @go: Variable for returning whether the local end is GO in the group 646 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 647 * @force_freq: Variable for returning forced frequency for the group 648 * @persistent_group: Whether this is an invitation to reinvoke a 649 * persistent group (instead of invitation to join an active 650 * group) 651 * Returns: Status code (P2P_SC_*) 652 * 653 * This optional callback can be used to implement persistent reconnect 654 * by allowing automatic restarting of persistent groups without user 655 * interaction. If this callback is not implemented (i.e., is %NULL), 656 * the received Invitation Request frames are replied with 657 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 658 * invitation_result() callback. 659 * 660 * If the requested parameters are acceptable and the group is known, 661 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 662 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 663 * can be returned if there is not enough data to provide immediate 664 * response, i.e., if some sort of user interaction is needed. The 665 * invitation_received() callback will be called in that case 666 * immediately after this call. 667 */ 668 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 669 const u8 *go_dev_addr, const u8 *ssid, 670 size_t ssid_len, int *go, u8 *group_bssid, 671 int *force_freq, int persistent_group); 672 673 /** 674 * invitation_received - Callback on Invitation Request RX 675 * @ctx: Callback context from cb_ctx 676 * @sa: Source address of the Invitation Request 677 * @bssid: P2P Group BSSID or %NULL if not received 678 * @ssid: SSID of the group 679 * @ssid_len: Length of ssid in octets 680 * @go_dev_addr: GO Device Address 681 * @status: Response Status 682 * @op_freq: Operational frequency for the group 683 * 684 * This callback is used to indicate sending of an Invitation Response 685 * for a received Invitation Request. If status == 0 (success), the 686 * upper layer code is responsible for starting the group. status == 1 687 * indicates need to get user authorization for the group. Other status 688 * values indicate that the invitation request was rejected. 689 */ 690 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 691 const u8 *ssid, size_t ssid_len, 692 const u8 *go_dev_addr, u8 status, 693 int op_freq); 694 695 /** 696 * invitation_result - Callback on Invitation result 697 * @ctx: Callback context from cb_ctx 698 * @status: Negotiation result (Status Code) 699 * @bssid: P2P Group BSSID or %NULL if not received 700 * 701 * This callback is used to indicate result of an Invitation procedure 702 * started with a call to p2p_invite(). The indicated status code is 703 * the value received from the peer in Invitation Response with 0 704 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 705 * local failure in transmitting the Invitation Request. 706 */ 707 void (*invitation_result)(void *ctx, int status, const u8 *bssid); 708}; 709 710 711/* P2P module initialization/deinitialization */ 712 713/** 714 * p2p_init - Initialize P2P module 715 * @cfg: P2P module configuration 716 * Returns: Pointer to private data or %NULL on failure 717 * 718 * This function is used to initialize global P2P module context (one per 719 * device). The P2P module will keep a copy of the configuration data, so the 720 * caller does not need to maintain this structure. However, the callback 721 * functions and the context parameters to them must be kept available until 722 * the P2P module is deinitialized with p2p_deinit(). 723 */ 724struct p2p_data * p2p_init(const struct p2p_config *cfg); 725 726/** 727 * p2p_deinit - Deinitialize P2P module 728 * @p2p: P2P module context from p2p_init() 729 */ 730void p2p_deinit(struct p2p_data *p2p); 731 732/** 733 * p2p_flush - Flush P2P module state 734 * @p2p: P2P module context from p2p_init() 735 * 736 * This command removes the P2P module state like peer device entries. 737 */ 738void p2p_flush(struct p2p_data *p2p); 739 740/** 741 * p2p_unauthorize - Unauthorize the specified peer device 742 * @p2p: P2P module context from p2p_init() 743 * @addr: P2P peer entry to be unauthorized 744 * Returns: 0 on success, -1 on failure 745 * 746 * This command removes any connection authorization from the specified P2P 747 * peer device address. This can be used, e.g., to cancel effect of a previous 748 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 749 * GO Negotiation. 750 */ 751int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 752 753/** 754 * p2p_set_dev_name - Set device name 755 * @p2p: P2P module context from p2p_init() 756 * Returns: 0 on success, -1 on failure 757 * 758 * This function can be used to update the P2P module configuration with 759 * information that was not available at the time of the p2p_init() call. 760 */ 761int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 762 763int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 764int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 765int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 766int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 767 768void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 769void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 770 771/** 772 * p2p_set_pri_dev_type - Set primary device type 773 * @p2p: P2P module context from p2p_init() 774 * Returns: 0 on success, -1 on failure 775 * 776 * This function can be used to update the P2P module configuration with 777 * information that was not available at the time of the p2p_init() call. 778 */ 779int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 780 781/** 782 * p2p_set_sec_dev_types - Set secondary device types 783 * @p2p: P2P module context from p2p_init() 784 * Returns: 0 on success, -1 on failure 785 * 786 * This function can be used to update the P2P module configuration with 787 * information that was not available at the time of the p2p_init() call. 788 */ 789int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 790 size_t num_dev_types); 791 792int p2p_set_country(struct p2p_data *p2p, const char *country); 793 794 795/* Commands from upper layer management entity */ 796 797enum p2p_discovery_type { 798 P2P_FIND_START_WITH_FULL, 799 P2P_FIND_ONLY_SOCIAL, 800 P2P_FIND_PROGRESSIVE 801}; 802 803/** 804 * p2p_find - Start P2P Find (Device Discovery) 805 * @p2p: P2P module context from p2p_init() 806 * @timeout: Timeout for find operation in seconds or 0 for no timeout 807 * @type: Device Discovery type 808 * @num_req_dev_types: Number of requested device types 809 * @req_dev_types: Requested device types array, must be an array 810 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 811 * requested device types. 812 * Returns: 0 on success, -1 on failure 813 */ 814int p2p_find(struct p2p_data *p2p, unsigned int timeout, 815 enum p2p_discovery_type type, 816 unsigned int num_req_dev_types, const u8 *req_dev_types); 817 818/** 819 * p2p_stop_find - Stop P2P Find (Device Discovery) 820 * @p2p: P2P module context from p2p_init() 821 */ 822void p2p_stop_find(struct p2p_data *p2p); 823 824/** 825 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 826 * @p2p: P2P module context from p2p_init() 827 * @freq: Frequency in MHz for next operation 828 * 829 * This is like p2p_stop_find(), but Listen state is not stopped if we are 830 * already on the same frequency. 831 */ 832void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 833 834/** 835 * p2p_listen - Start P2P Listen state for specified duration 836 * @p2p: P2P module context from p2p_init() 837 * @timeout: Listen state duration in milliseconds 838 * Returns: 0 on success, -1 on failure 839 * 840 * This function can be used to request the P2P module to keep the device 841 * discoverable on the listen channel for an extended set of time. At least in 842 * its current form, this is mainly used for testing purposes and may not be of 843 * much use for normal P2P operations. 844 */ 845int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 846 847/** 848 * p2p_connect - Start P2P group formation (GO negotiation) 849 * @p2p: P2P module context from p2p_init() 850 * @peer_addr: MAC address of the peer P2P client 851 * @wps_method: WPS method to be used in provisioning 852 * @go_intent: Local GO intent value (1..15) 853 * @own_interface_addr: Intended interface address to use with the group 854 * @force_freq: The only allowed channel frequency in MHz or 0 855 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 856 * persistent group without persistent reconnect, 2 = persistent group with 857 * persistent reconnect) 858 * Returns: 0 on success, -1 on failure 859 */ 860int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 861 enum p2p_wps_method wps_method, 862 int go_intent, const u8 *own_interface_addr, 863 unsigned int force_freq, int persistent_group); 864 865/** 866 * p2p_authorize - Authorize P2P group formation (GO negotiation) 867 * @p2p: P2P module context from p2p_init() 868 * @peer_addr: MAC address of the peer P2P client 869 * @wps_method: WPS method to be used in provisioning 870 * @go_intent: Local GO intent value (1..15) 871 * @own_interface_addr: Intended interface address to use with the group 872 * @force_freq: The only allowed channel frequency in MHz or 0 873 * @persistent_group: Whether to create a persistent group (0 = no, 1 = 874 * persistent group without persistent reconnect, 2 = persistent group with 875 * persistent reconnect) 876 * Returns: 0 on success, -1 on failure 877 * 878 * This is like p2p_connect(), but the actual group negotiation is not 879 * initiated automatically, i.e., the other end is expected to do that. 880 */ 881int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 882 enum p2p_wps_method wps_method, 883 int go_intent, const u8 *own_interface_addr, 884 unsigned int force_freq, int persistent_group); 885 886/** 887 * p2p_reject - Reject peer device (explicitly block connection attempts) 888 * @p2p: P2P module context from p2p_init() 889 * @peer_addr: MAC address of the peer P2P client 890 * Returns: 0 on success, -1 on failure 891 */ 892int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 893 894/** 895 * p2p_prov_disc_req - Send Provision Discovery Request 896 * @p2p: P2P module context from p2p_init() 897 * @peer_addr: MAC address of the peer P2P client 898 * @config_methods: WPS Config Methods value (only one bit set) 899 * @join: Whether this is used by a client joining an active group 900 * @force_freq: Forced TX frequency for the frame (mainly for the join case) 901 * Returns: 0 on success, -1 on failure 902 * 903 * This function can be used to request a discovered P2P peer to display a PIN 904 * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us 905 * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame 906 * is transmitted once immediately and if no response is received, the frame 907 * will be sent again whenever the target device is discovered during device 908 * dsicovery (start with a p2p_find() call). Response from the peer is 909 * indicated with the p2p_config::prov_disc_resp() callback. 910 */ 911int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 912 u16 config_methods, int join, int force_freq); 913 914/** 915 * p2p_sd_request - Schedule a service discovery query 916 * @p2p: P2P module context from p2p_init() 917 * @dst: Destination peer or %NULL to apply for all peers 918 * @tlvs: P2P Service Query TLV(s) 919 * Returns: Reference to the query or %NULL on failure 920 * 921 * Response to the query is indicated with the p2p_config::sd_response() 922 * callback. 923 */ 924void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, 925 const struct wpabuf *tlvs); 926 927/** 928 * p2p_sd_cancel_request - Cancel a pending service discovery query 929 * @p2p: P2P module context from p2p_init() 930 * @req: Query reference from p2p_sd_request() 931 * Returns: 0 if request for cancelled; -1 if not found 932 */ 933int p2p_sd_cancel_request(struct p2p_data *p2p, void *req); 934 935/** 936 * p2p_sd_response - Send response to a service discovery query 937 * @p2p: P2P module context from p2p_init() 938 * @freq: Frequency from p2p_config::sd_request() callback 939 * @dst: Destination address from p2p_config::sd_request() callback 940 * @dialog_token: Dialog token from p2p_config::sd_request() callback 941 * @resp_tlvs: P2P Service Response TLV(s) 942 * 943 * This function is called as a response to the request indicated with 944 * p2p_config::sd_request() callback. 945 */ 946void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst, 947 u8 dialog_token, const struct wpabuf *resp_tlvs); 948 949/** 950 * p2p_sd_service_update - Indicate a change in local services 951 * @p2p: P2P module context from p2p_init() 952 * 953 * This function needs to be called whenever there is a change in availability 954 * of the local services. This will increment the Service Update Indicator 955 * value which will be used in SD Request and Response frames. 956 */ 957void p2p_sd_service_update(struct p2p_data *p2p); 958 959 960enum p2p_invite_role { 961 P2P_INVITE_ROLE_GO, 962 P2P_INVITE_ROLE_ACTIVE_GO, 963 P2P_INVITE_ROLE_CLIENT 964}; 965 966/** 967 * p2p_invite - Invite a P2P Device into a group 968 * @p2p: P2P module context from p2p_init() 969 * @peer: Device Address of the peer P2P Device 970 * @role: Local role in the group 971 * @bssid: Group BSSID or %NULL if not known 972 * @ssid: Group SSID 973 * @ssid_len: Length of ssid in octets 974 * @force_freq: The only allowed channel frequency in MHz or 0 975 * @go_dev_addr: Forced GO Device Address or %NULL if none 976 * @persistent_group: Whether this is to reinvoke a persistent group 977 * Returns: 0 on success, -1 on failure 978 */ 979int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 980 const u8 *bssid, const u8 *ssid, size_t ssid_len, 981 unsigned int force_freq, const u8 *go_dev_addr, 982 int persistent_group); 983 984/** 985 * p2p_presence_req - Request GO presence 986 * @p2p: P2P module context from p2p_init() 987 * @go_interface_addr: GO P2P Interface Address 988 * @own_interface_addr: Own P2P Interface Address for this group 989 * @freq: Group operating frequence (in MHz) 990 * @duration1: Preferred presence duration in microseconds 991 * @interval1: Preferred presence interval in microseconds 992 * @duration2: Acceptable presence duration in microseconds 993 * @interval2: Acceptable presence interval in microseconds 994 * Returns: 0 on success, -1 on failure 995 * 996 * If both duration and interval values are zero, the parameter pair is not 997 * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0). 998 */ 999int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 1000 const u8 *own_interface_addr, unsigned int freq, 1001 u32 duration1, u32 interval1, u32 duration2, 1002 u32 interval2); 1003 1004/** 1005 * p2p_ext_listen - Set Extended Listen Timing 1006 * @p2p: P2P module context from p2p_init() 1007 * @freq: Group operating frequence (in MHz) 1008 * @period: Availability period in milliseconds (1-65535; 0 to disable) 1009 * @interval: Availability interval in milliseconds (1-65535; 0 to disable) 1010 * Returns: 0 on success, -1 on failure 1011 * 1012 * This function can be used to enable or disable (period = interval = 0) 1013 * Extended Listen Timing. When enabled, the P2P Device will become 1014 * discoverable (go into Listen State) every @interval milliseconds for at 1015 * least @period milliseconds. 1016 */ 1017int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 1018 unsigned int interval); 1019 1020/* Event notifications from upper layer management operations */ 1021 1022/** 1023 * p2p_wps_success_cb - Report successfully completed WPS provisioning 1024 * @p2p: P2P module context from p2p_init() 1025 * @mac_addr: Peer address 1026 * 1027 * This function is used to report successfully completed WPS provisioning 1028 * during group formation in both GO/Registrar and client/Enrollee roles. 1029 */ 1030void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr); 1031 1032/** 1033 * p2p_group_formation_failed - Report failed WPS provisioning 1034 * @p2p: P2P module context from p2p_init() 1035 * 1036 * This function is used to report failed group formation. This can happen 1037 * either due to failed WPS provisioning or due to 15 second timeout during 1038 * the provisioning phase. 1039 */ 1040void p2p_group_formation_failed(struct p2p_data *p2p); 1041 1042/** 1043 * p2p_get_provisioning_info - Get any stored provisioning info 1044 * @p2p: P2P module context from p2p_init() 1045 * @addr: Peer P2P Device Address 1046 * Returns: WPS provisioning information (WPS config method) or 0 if no 1047 * information is available 1048 * 1049 * This function is used to retrieve stored WPS provisioning info for the given 1050 * peer. 1051 */ 1052u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr); 1053 1054/** 1055 * p2p_clear_provisioning_info - Clear any stored provisioning info 1056 * @p2p: P2P module context from p2p_init() 1057 * @iface_addr: Peer P2P Interface Address 1058 * 1059 * This function is used to clear stored WPS provisioning info for the given 1060 * peer. 1061 */ 1062void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *iface_addr); 1063 1064 1065/* Event notifications from lower layer driver operations */ 1066 1067/** 1068 * p2p_probe_req_rx - Report reception of a Probe Request frame 1069 * @p2p: P2P module context from p2p_init() 1070 * @addr: Source MAC address 1071 * @dst: Destination MAC address if available or %NULL 1072 * @bssid: BSSID if available or %NULL 1073 * @ie: Information elements from the Probe Request frame body 1074 * @ie_len: Length of ie buffer in octets 1075 * Returns: 0 to indicate the frame was not processed or 1 if it was 1076 */ 1077int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 1078 const u8 *bssid, const u8 *ie, size_t ie_len); 1079 1080/** 1081 * p2p_rx_action - Report received Action frame 1082 * @p2p: P2P module context from p2p_init() 1083 * @da: Destination address of the received Action frame 1084 * @sa: Source address of the received Action frame 1085 * @bssid: Address 3 of the received Action frame 1086 * @category: Category of the received Action frame 1087 * @data: Action frame body after the Category field 1088 * @len: Length of the data buffer in octets 1089 * @freq: Frequency (in MHz) on which the frame was received 1090 */ 1091void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1092 const u8 *bssid, u8 category, 1093 const u8 *data, size_t len, int freq); 1094 1095/** 1096 * p2p_scan_res_handler - Indicate a P2P scan results 1097 * @p2p: P2P module context from p2p_init() 1098 * @bssid: BSSID of the scan result 1099 * @freq: Frequency of the channel on which the device was found in MHz 1100 * @level: Signal level (signal strength of the received Beacon/Probe Response 1101 * frame) 1102 * @ies: Pointer to IEs from the scan result 1103 * @ies_len: Length of the ies buffer 1104 * Returns: 0 to continue or 1 to stop scan result indication 1105 * 1106 * This function is called to indicate a scan result entry with P2P IE from a 1107 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1108 * the actual scan process (i.e., whenever a new device is found) or as a 1109 * sequence of calls after the full scan has been completed. The former option 1110 * can result in optimized operations, but may not be supported by all 1111 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1112 * but it is recommended to include all IEs received from the device. The 1113 * caller does not need to check that the IEs contain a P2P IE before calling 1114 * this function since frames will be filtered internally if needed. 1115 * 1116 * This function will return 1 if it wants to stop scan result iteration (and 1117 * scan in general if it is still in progress). This is used to allow faster 1118 * start of a pending operation, e.g., to start a pending GO negotiation. 1119 */ 1120int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1121 int level, const u8 *ies, size_t ies_len); 1122 1123/** 1124 * p2p_scan_res_handled - Indicate end of scan results 1125 * @p2p: P2P module context from p2p_init() 1126 * 1127 * This function is called to indicate that all P2P scan results from a scan 1128 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1129 * function must be called as a response to successful 1130 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1131 * calls stopped iteration. 1132 */ 1133void p2p_scan_res_handled(struct p2p_data *p2p); 1134 1135enum p2p_send_action_result { 1136 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1137 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1138 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1139}; 1140 1141/** 1142 * p2p_send_action_cb - Notify TX status of an Action frame 1143 * @p2p: P2P module context from p2p_init() 1144 * @freq: Channel frequency in MHz 1145 * @dst: Destination MAC address (Address 1) 1146 * @src: Source MAC address (Address 2) 1147 * @bssid: BSSID (Address 3) 1148 * @result: Result of the transmission attempt 1149 * 1150 * This function is used to indicate the result of an Action frame transmission 1151 * that was requested with struct p2p_config::send_action() callback. 1152 */ 1153void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1154 const u8 *src, const u8 *bssid, 1155 enum p2p_send_action_result result); 1156 1157/** 1158 * p2p_listen_cb - Indicate the start of a requested Listen state 1159 * @p2p: P2P module context from p2p_init() 1160 * @freq: Listen channel frequency in MHz 1161 * @duration: Duration for the Listen state in milliseconds 1162 * 1163 * This function is used to indicate that a Listen state requested with 1164 * struct p2p_config::start_listen() callback has started. 1165 */ 1166void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1167 unsigned int duration); 1168 1169/** 1170 * p2p_listen_end - Indicate the end of a requested Listen state 1171 * @p2p: P2P module context from p2p_init() 1172 * @freq: Listen channel frequency in MHz 1173 * Returns: 0 if no operations were started, 1 if an operation was started 1174 * 1175 * This function is used to indicate that a Listen state requested with 1176 * struct p2p_config::start_listen() callback has ended. 1177 */ 1178int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1179 1180void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1181 const u8 *ie, size_t ie_len); 1182 1183void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1184 const u8 *ie, size_t ie_len); 1185 1186 1187/* Per-group P2P state for GO */ 1188 1189struct p2p_group; 1190 1191/** 1192 * struct p2p_group_config - P2P group configuration 1193 * 1194 * This configuration is provided to the P2P module during initialization of 1195 * the per-group information with p2p_group_init(). 1196 */ 1197struct p2p_group_config { 1198 /** 1199 * persistent_group - Whether the group is persistent 1200 * 0 = not a persistent group 1201 * 1 = persistent group without persistent reconnect 1202 * 2 = persistent group with persistent reconnect 1203 */ 1204 int persistent_group; 1205 1206 /** 1207 * interface_addr - P2P Interface Address of the group 1208 */ 1209 u8 interface_addr[ETH_ALEN]; 1210 1211 /** 1212 * max_clients - Maximum number of clients in the group 1213 */ 1214 unsigned int max_clients; 1215 1216 /** 1217 * cb_ctx - Context to use with callback functions 1218 */ 1219 void *cb_ctx; 1220 1221 /** 1222 * ie_update - Notification of IE update 1223 * @ctx: Callback context from cb_ctx 1224 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1225 * @proberesp_ies: P2P Ie for Probe Response frames 1226 * 1227 * P2P module uses this callback function to notify whenever the P2P IE 1228 * in Beacon or Probe Response frames should be updated based on group 1229 * events. 1230 * 1231 * The callee is responsible for freeing the returned buffer(s) with 1232 * wpabuf_free(). 1233 */ 1234 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1235 struct wpabuf *proberesp_ies); 1236 1237 /** 1238 * idle_update - Notification of changes in group idle state 1239 * @ctx: Callback context from cb_ctx 1240 * @idle: Whether the group is idle (no associated stations) 1241 */ 1242 void (*idle_update)(void *ctx, int idle); 1243}; 1244 1245/** 1246 * p2p_group_init - Initialize P2P group 1247 * @p2p: P2P module context from p2p_init() 1248 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1249 * Returns: Pointer to private data or %NULL on failure 1250 * 1251 * This function is used to initialize per-group P2P module context. Currently, 1252 * this is only used to manage GO functionality and P2P clients do not need to 1253 * create an instance of this per-group information. 1254 */ 1255struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1256 struct p2p_group_config *config); 1257 1258/** 1259 * p2p_group_deinit - Deinitialize P2P group 1260 * @group: P2P group context from p2p_group_init() 1261 */ 1262void p2p_group_deinit(struct p2p_group *group); 1263 1264/** 1265 * p2p_group_notif_assoc - Notification of P2P client association with GO 1266 * @group: P2P group context from p2p_group_init() 1267 * @addr: Interface address of the P2P client 1268 * @ie: IEs from the (Re)association Request frame 1269 * @len: Length of the ie buffer in octets 1270 * Returns: 0 on success, -1 on failure 1271 */ 1272int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1273 const u8 *ie, size_t len); 1274 1275/** 1276 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1277 * @group: P2P group context from p2p_group_init() 1278 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1279 * Returns: P2P IE for (Re)association Response or %NULL on failure 1280 * 1281 * The caller is responsible for freeing the returned buffer with 1282 * wpabuf_free(). 1283 */ 1284struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1285 1286/** 1287 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1288 * @group: P2P group context from p2p_group_init() 1289 * @addr: Interface address of the P2P client 1290 */ 1291void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1292 1293/** 1294 * p2p_group_notif_formation_done - Notification of completed group formation 1295 * @group: P2P group context from p2p_group_init() 1296 */ 1297void p2p_group_notif_formation_done(struct p2p_group *group); 1298 1299/** 1300 * p2p_group_notif_noa - Notification of NoA change 1301 * @group: P2P group context from p2p_group_init() 1302 * @noa: Notice of Absence attribute payload, %NULL if none 1303 * @noa_len: Length of noa buffer in octets 1304 * Returns: 0 on success, -1 on failure 1305 * 1306 * Notify the P2P group management about a new NoA contents. This will be 1307 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1308 * the group information. 1309 */ 1310int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1311 size_t noa_len); 1312 1313/** 1314 * p2p_group_match_dev_type - Match device types in group with requested type 1315 * @group: P2P group context from p2p_group_init() 1316 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1317 * Returns: 1 on match, 0 on mismatch 1318 * 1319 * This function can be used to match the Requested Device Type attribute in 1320 * WPS IE with the device types of a group member for deciding whether a GO 1321 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1322 * is not requested any specific device type. 1323 */ 1324int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1325 1326/** 1327 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1328 * @group: P2P group context from p2p_group_init() 1329 * Returns: 0 on success (frame scheduled); -1 if client was not found 1330 */ 1331int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1332 const u8 *searching_dev, int rx_freq); 1333 1334 1335/* Generic helper functions */ 1336 1337/** 1338 * p2p_ie_text - Build text format description of P2P IE 1339 * @p2p_ie: P2P IE 1340 * @buf: Buffer for returning text 1341 * @end: Pointer to the end of the buf area 1342 * Returns: Number of octets written to the buffer or -1 on failure 1343 * 1344 * This function can be used to parse P2P IE contents into text format 1345 * field=value lines. 1346 */ 1347int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1348 1349/** 1350 * p2p_scan_result_text - Build text format description of P2P IE 1351 * @ies: Information elements from scan results 1352 * @ies_len: ies buffer length in octets 1353 * @buf: Buffer for returning text 1354 * @end: Pointer to the end of the buf area 1355 * Returns: Number of octets written to the buffer or -1 on failure 1356 * 1357 * This function can be used to parse P2P IE contents into text format 1358 * field=value lines. 1359 */ 1360int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1361 1362/** 1363 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1364 * @p2p: P2P module context from p2p_init() 1365 * @bssid: BSSID 1366 * @buf: Buffer for writing the P2P IE 1367 * @len: Maximum buf length in octets 1368 * @p2p_group: Whether this is for association with a P2P GO 1369 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1370 * Returns: Number of octets written into buf or -1 on failure 1371 */ 1372int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1373 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1374 1375/** 1376 * p2p_scan_ie - Build P2P IE for Probe Request 1377 * @p2p: P2P module context from p2p_init() 1378 * @ies: Buffer for writing P2P IE 1379 */ 1380void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies); 1381 1382/** 1383 * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie 1384 * @p2p: P2P module context from p2p_init() 1385 * Returns: Number of octets that p2p_scan_ie() may add to the buffer 1386 */ 1387size_t p2p_scan_ie_buf_len(struct p2p_data *p2p); 1388 1389/** 1390 * p2p_go_params - Generate random P2P group parameters 1391 * @p2p: P2P module context from p2p_init() 1392 * @params: Buffer for parameters 1393 * Returns: 0 on success, -1 on failure 1394 */ 1395int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1396 1397/** 1398 * p2p_get_group_capab - Get Group Capability from P2P IE data 1399 * @p2p_ie: P2P IE(s) contents 1400 * Returns: Group Capability 1401 */ 1402u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1403 1404/** 1405 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1406 * @p2p_ie: P2P IE(s) contents 1407 * Returns: 0 if cross connection is allow, 1 if not 1408 */ 1409int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1410 1411/** 1412 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1413 * @p2p_ie: P2P IE(s) contents 1414 * Returns: Pointer to P2P Device Address or %NULL if not included 1415 */ 1416const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1417 1418/** 1419 * p2p_get_peer_info - Get P2P peer information 1420 * @p2p: P2P module context from p2p_init() 1421 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1422 * @next: Whether to select the peer entry following the one indicated by addr 1423 * Returns: Pointer to peer info or %NULL if not found 1424 */ 1425const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 1426 const u8 *addr, int next); 1427 1428/** 1429 * p2p_get_peer_info_txt - Get internal P2P peer information in text format 1430 * @info: Pointer to P2P peer info from p2p_get_peer_info() 1431 * @buf: Buffer for returning text 1432 * @buflen: Maximum buffer length 1433 * Returns: Number of octets written to the buffer or -1 on failure 1434 * 1435 * Note: This information is internal to the P2P module and subject to change. 1436 * As such, this should not really be used by external programs for purposes 1437 * other than debugging. 1438 */ 1439int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 1440 char *buf, size_t buflen); 1441 1442/** 1443 * p2p_peer_known - Check whether P2P peer is known 1444 * @p2p: P2P module context from p2p_init() 1445 * @addr: P2P Device Address of the peer 1446 * Returns: 1 if the specified device is in the P2P peer table or 0 if not 1447 */ 1448int p2p_peer_known(struct p2p_data *p2p, const u8 *addr); 1449 1450/** 1451 * p2p_set_client_discoverability - Set client discoverability capability 1452 * @p2p: P2P module context from p2p_init() 1453 * @enabled: Whether client discoverability will be enabled 1454 * 1455 * This function can be used to disable (and re-enable) client discoverability. 1456 * This capability is enabled by default and should not be disabled in normal 1457 * use cases, i.e., this is mainly for testing purposes. 1458 */ 1459void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1460 1461/** 1462 * p2p_set_managed_oper - Set managed P2P Device operations capability 1463 * @p2p: P2P module context from p2p_init() 1464 * @enabled: Whether managed P2P Device operations will be enabled 1465 */ 1466void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1467 1468int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1469 1470int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1471 1472int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1473 u8 *iface_addr); 1474int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1475 u8 *dev_addr); 1476 1477void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1478 1479/** 1480 * p2p_set_cross_connect - Set cross connection capability 1481 * @p2p: P2P module context from p2p_init() 1482 * @enabled: Whether cross connection will be enabled 1483 */ 1484void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1485 1486int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1487 1488int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level, 1489 const u8 *ies, size_t ies_len); 1490 1491/** 1492 * p2p_set_intra_bss_dist - Set intra BSS distribution 1493 * @p2p: P2P module context from p2p_init() 1494 * @enabled: Whether intra BSS distribution will be enabled 1495 */ 1496void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1497 1498/** 1499 * p2p_supported_freq - Check whether channel is supported for P2P 1500 * @p2p: P2P module context from p2p_init() 1501 * @freq: Channel frequency in MHz 1502 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1503 */ 1504int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1505 1506void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1507 1508/** 1509 * p2p_set_best_channels - Update best channel information 1510 * @p2p: P2P module context from p2p_init() 1511 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1512 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1513 * @freq_overall: Frequency (MHz) of best channel overall 1514 */ 1515void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1516 int freq_overall); 1517 1518const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1519 1520/** 1521 * p2p_get_group_num_members - Get number of members in group 1522 * @group: P2P group context from p2p_group_init() 1523 * Returns: Number of members in the group 1524 */ 1525unsigned int p2p_get_group_num_members(struct p2p_group *group); 1526 1527/** 1528 * p2p_iterate_group_members - Iterate group members 1529 * @group: P2P group context from p2p_group_init() 1530 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1531 * on the first call and not modified later 1532 * Returns: A P2P Interface Address for each call and %NULL for no more members 1533 */ 1534const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1535 1536/** 1537 * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group 1538 * @group: P2P group context from p2p_group_init() 1539 * @addr: P2P Interface Address of the client 1540 * Returns: P2P Device Address of the client if found or %NULL if no match 1541 * found 1542 */ 1543const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1544 1545/** 1546 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1547 * @p2p: P2P module context from p2p_init() 1548 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1549 * @next: Whether to select the peer entry following the one indicated by addr 1550 * Returns: The first P2P peer info available or %NULL if no such peer exists 1551 */ 1552const struct p2p_peer_info * 1553p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1554 1555/** 1556 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1557 * @p2p: P2P module context from p2p_init() 1558 */ 1559void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1560 1561/** 1562 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1563 * @p2p: P2P module context from p2p_init() 1564 * @vendor_ext: The vendor extensions to add 1565 * Returns: 0 on success, -1 on failure 1566 * 1567 * The wpabuf structures in the array are owned by the P2P 1568 * module after this call. 1569 */ 1570int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1571 const struct wpabuf *vendor_ext); 1572 1573/** 1574 * p2p_set_oper_channel - Set the P2P operating channel 1575 * @p2p: P2P module context from p2p_init() 1576 * @op_reg_class: Operating regulatory class to set 1577 * @op_channel: operating channel to set 1578 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1579 * Returns: 0 on success, -1 on failure 1580 */ 1581int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1582 int cfg_op_channel); 1583 1584/** 1585 * p2p_in_progress - Check whether a P2P operation is progress 1586 * @p2p: P2P module context from p2p_init() 1587 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1588 */ 1589int p2p_in_progress(struct p2p_data *p2p); 1590 1591#ifdef ANDROID_P2P 1592/** 1593 * p2p_in_progress - Check whether a P2P SEARCH is in progress 1594 * @p2p: P2P module context from p2p_init() 1595 * Returns: 0 if P2P module is idle or 1 if an operation is in progress 1596 */ 1597int p2p_search_in_progress(struct p2p_data *p2p); 1598#endif 1599 1600/** 1601 * p2p_other_scan_completed - Notify completion of non-P2P scan 1602 * @p2p: P2P module context from p2p_init() 1603 * Returns: 0 if P2P module is idle or 1 if an operation was started 1604 */ 1605int p2p_other_scan_completed(struct p2p_data *p2p); 1606 1607const char * p2p_wps_method_text(enum p2p_wps_method method); 1608 1609#endif /* P2P_H */ 1610