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 */ 31 struct 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 58 enum 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 */ 65 struct 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 }; 131 132 struct p2p_data; 133 134 enum 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 */ 146 struct 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 }; 217 218 enum 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 */ 230 struct 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 #ifdef ANDROID_BRCM_P2P_PATCH 296 /** 297 * p2p_dev_addr - P2P Device Address 298 * 299 * Holds the p2p device address. If the driver uses primary mac address 300 * for p2p operations, then this will hold the same value as that of 301 * dev_addr. 302 */ 303 u8 p2p_dev_addr[ETH_ALEN]; 304 #endif 305 306 /** 307 * dev_name - Device Name 308 */ 309 char *dev_name; 310 311 char *manufacturer; 312 char *model_name; 313 char *model_number; 314 char *serial_number; 315 316 u8 uuid[16]; 317 u16 config_methods; 318 319 /** 320 * concurrent_operations - Whether concurrent operations are supported 321 */ 322 int concurrent_operations; 323 324 /** 325 * max_peers - Maximum number of discovered peers to remember 326 * 327 * If more peers are discovered, older entries will be removed to make 328 * room for the new ones. 329 */ 330 size_t max_peers; 331 332 /** 333 * p2p_intra_bss - Intra BSS communication is supported 334 */ 335 int p2p_intra_bss; 336 337 /** 338 * ssid_postfix - Postfix data to add to the SSID 339 * 340 * This data will be added to the end of the SSID after the 341 * DIRECT-<random two octets> prefix. 342 */ 343 u8 ssid_postfix[32 - 9]; 344 345 /** 346 * ssid_postfix_len - Length of the ssid_postfix data 347 */ 348 size_t ssid_postfix_len; 349 350 /** 351 * msg_ctx - Context to use with wpa_msg() calls 352 */ 353 void *msg_ctx; 354 355 /** 356 * cb_ctx - Context to use with callback functions 357 */ 358 void *cb_ctx; 359 360 361 /* Callbacks to request lower layer driver operations */ 362 363 /** 364 * p2p_scan - Request a P2P scan/search 365 * @ctx: Callback context from cb_ctx 366 * @type: Scan type 367 * @freq: Specific frequency (MHz) to scan or 0 for no restriction 368 * @num_req_dev_types: Number of requested device types 369 * @req_dev_types: Array containing requested device types 370 * Returns: 0 on success, -1 on failure 371 * 372 * This callback function is used to request a P2P scan or search 373 * operation to be completed. Type type argument specifies which type 374 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the 375 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL 376 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC 377 * request a scan of a single channel specified by freq. 378 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels 379 * plus one extra channel specified by freq. 380 * 381 * The full scan is used for the initial scan to find group owners from 382 * all. The other types are used during search phase scan of the social 383 * channels (with potential variation if the Listen channel of the 384 * target peer is known or if other channels are scanned in steps). 385 * 386 * The scan results are returned after this call by calling 387 * p2p_scan_res_handler() for each scan result that has a P2P IE and 388 * then calling p2p_scan_res_handled() to indicate that all scan 389 * results have been indicated. 390 */ 391 int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq, 392 unsigned int num_req_dev_types, 393 const u8 *req_dev_types); 394 395 /** 396 * send_probe_resp - Transmit a Probe Response frame 397 * @ctx: Callback context from cb_ctx 398 * @buf: Probe Response frame (including the header and body) 399 * Returns: 0 on success, -1 on failure 400 * 401 * This function is used to reply to Probe Request frames that were 402 * indicated with a call to p2p_probe_req_rx(). The response is to be 403 * sent on the same channel or to be dropped if the driver is not 404 * anymore listening to Probe Request frames. 405 * 406 * Alternatively, the responsibility for building the Probe Response 407 * frames in Listen state may be in another system component in which 408 * case this function need to be implemented (i.e., the function 409 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe 410 * Response frames in such a case are available from the 411 * start_listen() callback. It should be noted that the received Probe 412 * Request frames must be indicated by calling p2p_probe_req_rx() even 413 * if this send_probe_resp() is not used. 414 */ 415 int (*send_probe_resp)(void *ctx, const struct wpabuf *buf); 416 417 /** 418 * send_action - Transmit an Action frame 419 * @ctx: Callback context from cb_ctx 420 * @freq: Frequency in MHz for the channel on which to transmit 421 * @dst: Destination MAC address (Address 1) 422 * @src: Source MAC address (Address 2) 423 * @bssid: BSSID (Address 3) 424 * @buf: Frame body (starting from Category field) 425 * @len: Length of buf in octets 426 * @wait_time: How many msec to wait for a response frame 427 * Returns: 0 on success, -1 on failure 428 * 429 * The Action frame may not be transmitted immediately and the status 430 * of the transmission must be reported by calling 431 * p2p_send_action_cb() once the frame has either been transmitted or 432 * it has been dropped due to excessive retries or other failure to 433 * transmit. 434 */ 435 int (*send_action)(void *ctx, unsigned int freq, const u8 *dst, 436 const u8 *src, const u8 *bssid, const u8 *buf, 437 size_t len, unsigned int wait_time); 438 439 /** 440 * send_action_done - Notify that Action frame sequence was completed 441 * @ctx: Callback context from cb_ctx 442 * 443 * This function is called when the Action frame sequence that was 444 * started with send_action() has been completed, i.e., when there is 445 * no need to wait for a response from the destination peer anymore. 446 */ 447 void (*send_action_done)(void *ctx); 448 449 /** 450 * start_listen - Start Listen state 451 * @ctx: Callback context from cb_ctx 452 * @freq: Frequency of the listen channel in MHz 453 * @duration: Duration for the Listen state in milliseconds 454 * @probe_resp_ie: IE(s) to be added to Probe Response frames 455 * Returns: 0 on success, -1 on failure 456 * 457 * This Listen state may not start immediately since the driver may 458 * have other pending operations to complete first. Once the Listen 459 * state has started, p2p_listen_cb() must be called to notify the P2P 460 * module. Once the Listen state is stopped, p2p_listen_end() must be 461 * called to notify the P2P module that the driver is not in the Listen 462 * state anymore. 463 * 464 * If the send_probe_resp() is not used for generating the response, 465 * the IEs from probe_resp_ie need to be added to the end of the Probe 466 * Response frame body. If send_probe_resp() is used, the probe_resp_ie 467 * information can be ignored. 468 */ 469 int (*start_listen)(void *ctx, unsigned int freq, 470 unsigned int duration, 471 const struct wpabuf *probe_resp_ie); 472 /** 473 * stop_listen - Stop Listen state 474 * @ctx: Callback context from cb_ctx 475 * 476 * This callback can be used to stop a Listen state operation that was 477 * previously requested with start_listen(). 478 */ 479 void (*stop_listen)(void *ctx); 480 481 /** 482 * get_noa - Get current Notice of Absence attribute payload 483 * @ctx: Callback context from cb_ctx 484 * @interface_addr: P2P Interface Address of the GO 485 * @buf: Buffer for returning NoA 486 * @buf_len: Buffer length in octets 487 * Returns: Number of octets used in buf, 0 to indicate no NoA is being 488 * advertized, or -1 on failure 489 * 490 * This function is used to fetch the current Notice of Absence 491 * attribute value from GO. 492 */ 493 int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf, 494 size_t buf_len); 495 496 /* Callbacks to notify events to upper layer management entity */ 497 498 /** 499 * dev_found - Notification of a found P2P Device 500 * @ctx: Callback context from cb_ctx 501 * @addr: Source address of the message triggering this notification 502 * @info: P2P peer information 503 * @new_device: Inform if the peer is newly found 504 * 505 * This callback is used to notify that a new P2P Device has been 506 * found. This may happen, e.g., during Search state based on scan 507 * results or during Listen state based on receive Probe Request and 508 * Group Owner Negotiation Request. 509 */ 510 void (*dev_found)(void *ctx, const u8 *addr, 511 const struct p2p_peer_info *info, 512 int new_device); 513 514 /** 515 * dev_lost - Notification of a lost P2P Device 516 * @ctx: Callback context from cb_ctx 517 * @dev_addr: P2P Device Address of the lost P2P Device 518 * 519 * This callback is used to notify that a P2P Device has been deleted. 520 */ 521 void (*dev_lost)(void *ctx, const u8 *dev_addr); 522 523 /** 524 * go_neg_req_rx - Notification of a receive GO Negotiation Request 525 * @ctx: Callback context from cb_ctx 526 * @src: Source address of the message triggering this notification 527 * @dev_passwd_id: WPS Device Password ID 528 * 529 * This callback is used to notify that a P2P Device is requesting 530 * group owner negotiation with us, but we do not have all the 531 * necessary information to start GO Negotiation. This indicates that 532 * the local user has not authorized the connection yet by providing a 533 * PIN or PBC button press. This information can be provided with a 534 * call to p2p_connect(). 535 */ 536 void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id); 537 538 /** 539 * go_neg_completed - Notification of GO Negotiation results 540 * @ctx: Callback context from cb_ctx 541 * @res: GO Negotiation results 542 * 543 * This callback is used to notify that Group Owner Negotiation has 544 * been completed. Non-zero struct p2p_go_neg_results::status indicates 545 * failed negotiation. In case of success, this function is responsible 546 * for creating a new group interface (or using the existing interface 547 * depending on driver features), setting up the group interface in 548 * proper mode based on struct p2p_go_neg_results::role_go and 549 * initializing WPS provisioning either as a Registrar (if GO) or as an 550 * Enrollee. Successful WPS provisioning must be indicated by calling 551 * p2p_wps_success_cb(). The callee is responsible for timing out group 552 * formation if WPS provisioning cannot be completed successfully 553 * within 15 seconds. 554 */ 555 void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res); 556 557 /** 558 * sd_request - Callback on Service Discovery Request 559 * @ctx: Callback context from cb_ctx 560 * @freq: Frequency (in MHz) of the channel 561 * @sa: Source address of the request 562 * @dialog_token: Dialog token 563 * @update_indic: Service Update Indicator from the source of request 564 * @tlvs: P2P Service Request TLV(s) 565 * @tlvs_len: Length of tlvs buffer in octets 566 * 567 * This callback is used to indicate reception of a service discovery 568 * request. Response to the query must be indicated by calling 569 * p2p_sd_response() with the context information from the arguments to 570 * this callback function. 571 * 572 * This callback handler can be set to %NULL to indicate that service 573 * discovery is not supported. 574 */ 575 void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token, 576 u16 update_indic, const u8 *tlvs, size_t tlvs_len); 577 578 /** 579 * sd_response - Callback on Service Discovery Response 580 * @ctx: Callback context from cb_ctx 581 * @sa: Source address of the request 582 * @update_indic: Service Update Indicator from the source of response 583 * @tlvs: P2P Service Response TLV(s) 584 * @tlvs_len: Length of tlvs buffer in octets 585 * 586 * This callback is used to indicate reception of a service discovery 587 * response. This callback handler can be set to %NULL if no service 588 * discovery requests are used. The information provided with this call 589 * is replies to the queries scheduled with p2p_sd_request(). 590 */ 591 void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic, 592 const u8 *tlvs, size_t tlvs_len); 593 594 /** 595 * prov_disc_req - Callback on Provisiong Discovery Request 596 * @ctx: Callback context from cb_ctx 597 * @peer: Source address of the request 598 * @config_methods: Requested WPS Config Method 599 * @dev_addr: P2P Device Address of the found P2P Device 600 * @pri_dev_type: Primary Device Type 601 * @dev_name: Device Name 602 * @supp_config_methods: Supported configuration Methods 603 * @dev_capab: Device Capabilities 604 * @group_capab: Group Capabilities 605 * 606 * This callback is used to indicate reception of a Provision Discovery 607 * Request frame that the P2P module accepted. 608 */ 609 void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods, 610 const u8 *dev_addr, const u8 *pri_dev_type, 611 const char *dev_name, u16 supp_config_methods, 612 u8 dev_capab, u8 group_capab); 613 614 /** 615 * prov_disc_resp - Callback on Provisiong Discovery Response 616 * @ctx: Callback context from cb_ctx 617 * @peer: Source address of the response 618 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure 619 * 620 * This callback is used to indicate reception of a Provision Discovery 621 * Response frame for a pending request scheduled with 622 * p2p_prov_disc_req(). This callback handler can be set to %NULL if 623 * provision discovery is not used. 624 */ 625 void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods); 626 627 /** 628 * prov_disc_fail - Callback on Provision Discovery failure 629 * @ctx: Callback context from cb_ctx 630 * @peer: Source address of the response 631 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS 632 * 633 * This callback is used to indicate either a failure or no response 634 * to an earlier provision discovery request. 635 * 636 * This callback handler can be set to %NULL if provision discovery 637 * is not used or failures do not need to be indicated. 638 */ 639 void (*prov_disc_fail)(void *ctx, const u8 *peer, 640 enum p2p_prov_disc_status status); 641 642 /** 643 * invitation_process - Optional callback for processing Invitations 644 * @ctx: Callback context from cb_ctx 645 * @sa: Source address of the Invitation Request 646 * @bssid: P2P Group BSSID from the request or %NULL if not included 647 * @go_dev_addr: GO Device Address from P2P Group ID 648 * @ssid: SSID from P2P Group ID 649 * @ssid_len: Length of ssid buffer in octets 650 * @go: Variable for returning whether the local end is GO in the group 651 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO) 652 * @force_freq: Variable for returning forced frequency for the group 653 * @persistent_group: Whether this is an invitation to reinvoke a 654 * persistent group (instead of invitation to join an active 655 * group) 656 * Returns: Status code (P2P_SC_*) 657 * 658 * This optional callback can be used to implement persistent reconnect 659 * by allowing automatic restarting of persistent groups without user 660 * interaction. If this callback is not implemented (i.e., is %NULL), 661 * the received Invitation Request frames are replied with 662 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the 663 * invitation_result() callback. 664 * 665 * If the requested parameters are acceptable and the group is known, 666 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown, 667 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED 668 * can be returned if there is not enough data to provide immediate 669 * response, i.e., if some sort of user interaction is needed. The 670 * invitation_received() callback will be called in that case 671 * immediately after this call. 672 */ 673 u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid, 674 const u8 *go_dev_addr, const u8 *ssid, 675 size_t ssid_len, int *go, u8 *group_bssid, 676 int *force_freq, int persistent_group); 677 678 /** 679 * invitation_received - Callback on Invitation Request RX 680 * @ctx: Callback context from cb_ctx 681 * @sa: Source address of the Invitation Request 682 * @bssid: P2P Group BSSID or %NULL if not received 683 * @ssid: SSID of the group 684 * @ssid_len: Length of ssid in octets 685 * @go_dev_addr: GO Device Address 686 * @status: Response Status 687 * @op_freq: Operational frequency for the group 688 * 689 * This callback is used to indicate sending of an Invitation Response 690 * for a received Invitation Request. If status == 0 (success), the 691 * upper layer code is responsible for starting the group. status == 1 692 * indicates need to get user authorization for the group. Other status 693 * values indicate that the invitation request was rejected. 694 */ 695 void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid, 696 const u8 *ssid, size_t ssid_len, 697 const u8 *go_dev_addr, u8 status, 698 int op_freq); 699 700 /** 701 * invitation_result - Callback on Invitation result 702 * @ctx: Callback context from cb_ctx 703 * @status: Negotiation result (Status Code) 704 * @bssid: P2P Group BSSID or %NULL if not received 705 * 706 * This callback is used to indicate result of an Invitation procedure 707 * started with a call to p2p_invite(). The indicated status code is 708 * the value received from the peer in Invitation Response with 0 709 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a 710 * local failure in transmitting the Invitation Request. 711 */ 712 void (*invitation_result)(void *ctx, int status, const u8 *bssid); 713 }; 714 715 716 /* P2P module initialization/deinitialization */ 717 718 /** 719 * p2p_init - Initialize P2P module 720 * @cfg: P2P module configuration 721 * Returns: Pointer to private data or %NULL on failure 722 * 723 * This function is used to initialize global P2P module context (one per 724 * device). The P2P module will keep a copy of the configuration data, so the 725 * caller does not need to maintain this structure. However, the callback 726 * functions and the context parameters to them must be kept available until 727 * the P2P module is deinitialized with p2p_deinit(). 728 */ 729 struct p2p_data * p2p_init(const struct p2p_config *cfg); 730 731 /** 732 * p2p_deinit - Deinitialize P2P module 733 * @p2p: P2P module context from p2p_init() 734 */ 735 void p2p_deinit(struct p2p_data *p2p); 736 737 /** 738 * p2p_flush - Flush P2P module state 739 * @p2p: P2P module context from p2p_init() 740 * 741 * This command removes the P2P module state like peer device entries. 742 */ 743 void p2p_flush(struct p2p_data *p2p); 744 745 /** 746 * p2p_unauthorize - Unauthorize the specified peer device 747 * @p2p: P2P module context from p2p_init() 748 * @addr: P2P peer entry to be unauthorized 749 * Returns: 0 on success, -1 on failure 750 * 751 * This command removes any connection authorization from the specified P2P 752 * peer device address. This can be used, e.g., to cancel effect of a previous 753 * p2p_authorize() or p2p_connect() call that has not yet resulted in completed 754 * GO Negotiation. 755 */ 756 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr); 757 758 /** 759 * p2p_set_dev_name - Set device name 760 * @p2p: P2P module context from p2p_init() 761 * Returns: 0 on success, -1 on failure 762 * 763 * This function can be used to update the P2P module configuration with 764 * information that was not available at the time of the p2p_init() call. 765 */ 766 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name); 767 768 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer); 769 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name); 770 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number); 771 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number); 772 773 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods); 774 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid); 775 776 /** 777 * p2p_set_pri_dev_type - Set primary device type 778 * @p2p: P2P module context from p2p_init() 779 * Returns: 0 on success, -1 on failure 780 * 781 * This function can be used to update the P2P module configuration with 782 * information that was not available at the time of the p2p_init() call. 783 */ 784 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type); 785 786 /** 787 * p2p_set_sec_dev_types - Set secondary device types 788 * @p2p: P2P module context from p2p_init() 789 * Returns: 0 on success, -1 on failure 790 * 791 * This function can be used to update the P2P module configuration with 792 * information that was not available at the time of the p2p_init() call. 793 */ 794 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 795 size_t num_dev_types); 796 797 int p2p_set_country(struct p2p_data *p2p, const char *country); 798 799 800 /* Commands from upper layer management entity */ 801 802 enum p2p_discovery_type { 803 P2P_FIND_START_WITH_FULL, 804 P2P_FIND_ONLY_SOCIAL, 805 P2P_FIND_PROGRESSIVE 806 }; 807 808 /** 809 * p2p_find - Start P2P Find (Device Discovery) 810 * @p2p: P2P module context from p2p_init() 811 * @timeout: Timeout for find operation in seconds or 0 for no timeout 812 * @type: Device Discovery type 813 * @num_req_dev_types: Number of requested device types 814 * @req_dev_types: Requested device types array, must be an array 815 * containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no 816 * requested device types. 817 * Returns: 0 on success, -1 on failure 818 */ 819 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 820 enum p2p_discovery_type type, 821 unsigned int num_req_dev_types, const u8 *req_dev_types); 822 823 /** 824 * p2p_stop_find - Stop P2P Find (Device Discovery) 825 * @p2p: P2P module context from p2p_init() 826 */ 827 void p2p_stop_find(struct p2p_data *p2p); 828 829 /** 830 * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq 831 * @p2p: P2P module context from p2p_init() 832 * @freq: Frequency in MHz for next operation 833 * 834 * This is like p2p_stop_find(), but Listen state is not stopped if we are 835 * already on the same frequency. 836 */ 837 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq); 838 839 /** 840 * p2p_listen - Start P2P Listen state for specified duration 841 * @p2p: P2P module context from p2p_init() 842 * @timeout: Listen state duration in milliseconds 843 * Returns: 0 on success, -1 on failure 844 * 845 * This function can be used to request the P2P module to keep the device 846 * discoverable on the listen channel for an extended set of time. At least in 847 * its current form, this is mainly used for testing purposes and may not be of 848 * much use for normal P2P operations. 849 */ 850 int p2p_listen(struct p2p_data *p2p, unsigned int timeout); 851 852 /** 853 * p2p_connect - Start P2P group formation (GO negotiation) 854 * @p2p: P2P module context from p2p_init() 855 * @peer_addr: MAC address of the peer P2P client 856 * @wps_method: WPS method to be used in provisioning 857 * @go_intent: Local GO intent value (1..15) 858 * @own_interface_addr: Intended interface address to use with the group 859 * @force_freq: The only allowed channel frequency in MHz or 0 860 * @persistent_group: Whether to create a persistent group 861 * Returns: 0 on success, -1 on failure 862 */ 863 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 864 enum p2p_wps_method wps_method, 865 int go_intent, const u8 *own_interface_addr, 866 unsigned int force_freq, int persistent_group); 867 868 /** 869 * p2p_authorize - Authorize P2P group formation (GO negotiation) 870 * @p2p: P2P module context from p2p_init() 871 * @peer_addr: MAC address of the peer P2P client 872 * @wps_method: WPS method to be used in provisioning 873 * @go_intent: Local GO intent value (1..15) 874 * @own_interface_addr: Intended interface address to use with the group 875 * @force_freq: The only allowed channel frequency in MHz or 0 876 * @persistent_group: Whether to create a persistent group 877 * Returns: 0 on success, -1 on failure 878 * 879 * This is like p2p_connect(), but the actual group negotiation is not 880 * initiated automatically, i.e., the other end is expected to do that. 881 */ 882 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 883 enum p2p_wps_method wps_method, 884 int go_intent, const u8 *own_interface_addr, 885 unsigned int force_freq, int persistent_group); 886 887 /** 888 * p2p_reject - Reject peer device (explicitly block connection attempts) 889 * @p2p: P2P module context from p2p_init() 890 * @peer_addr: MAC address of the peer P2P client 891 * Returns: 0 on success, -1 on failure 892 */ 893 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr); 894 895 /** 896 * p2p_prov_disc_req - Send Provision Discovery Request 897 * @p2p: P2P module context from p2p_init() 898 * @peer_addr: MAC address of the peer P2P client 899 * @config_methods: WPS Config Methods value (only one bit set) 900 * @join: Whether this is used by a client joining an active group 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 */ 911 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 912 u16 config_methods, int join); 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 */ 924 void * 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 */ 933 int 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 */ 946 void 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 */ 957 void p2p_sd_service_update(struct p2p_data *p2p); 958 959 960 enum 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 */ 979 int 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 */ 999 int 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 */ 1017 int 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 */ 1030 void 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 */ 1040 void p2p_group_formation_failed(struct p2p_data *p2p); 1041 1042 1043 /* Event notifications from lower layer driver operations */ 1044 1045 /** 1046 * p2p_probe_req_rx - Report reception of a Probe Request frame 1047 * @p2p: P2P module context from p2p_init() 1048 * @addr: Source MAC address 1049 * @ie: Information elements from the Probe Request frame body 1050 * @ie_len: Length of ie buffer in octets 1051 * Returns: 0 to indicate the frame was not processed or 1 if it was 1052 */ 1053 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie, 1054 size_t ie_len); 1055 1056 /** 1057 * p2p_rx_action - Report received Action frame 1058 * @p2p: P2P module context from p2p_init() 1059 * @da: Destination address of the received Action frame 1060 * @sa: Source address of the received Action frame 1061 * @bssid: Address 3 of the received Action frame 1062 * @category: Category of the received Action frame 1063 * @data: Action frame body after the Category field 1064 * @len: Length of the data buffer in octets 1065 * @freq: Frequency (in MHz) on which the frame was received 1066 */ 1067 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1068 const u8 *bssid, u8 category, 1069 const u8 *data, size_t len, int freq); 1070 1071 /** 1072 * p2p_scan_res_handler - Indicate a P2P scan results 1073 * @p2p: P2P module context from p2p_init() 1074 * @bssid: BSSID of the scan result 1075 * @freq: Frequency of the channel on which the device was found in MHz 1076 * @level: Signal level (signal strength of the received Beacon/Probe Response 1077 * frame) 1078 * @ies: Pointer to IEs from the scan result 1079 * @ies_len: Length of the ies buffer 1080 * Returns: 0 to continue or 1 to stop scan result indication 1081 * 1082 * This function is called to indicate a scan result entry with P2P IE from a 1083 * scan requested with struct p2p_config::p2p_scan(). This can be called during 1084 * the actual scan process (i.e., whenever a new device is found) or as a 1085 * sequence of calls after the full scan has been completed. The former option 1086 * can result in optimized operations, but may not be supported by all 1087 * driver/firmware designs. The ies buffer need to include at least the P2P IE, 1088 * but it is recommended to include all IEs received from the device. The 1089 * caller does not need to check that the IEs contain a P2P IE before calling 1090 * this function since frames will be filtered internally if needed. 1091 * 1092 * This function will return 1 if it wants to stop scan result iteration (and 1093 * scan in general if it is still in progress). This is used to allow faster 1094 * start of a pending operation, e.g., to start a pending GO negotiation. 1095 */ 1096 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 1097 int level, const u8 *ies, size_t ies_len); 1098 1099 /** 1100 * p2p_scan_res_handled - Indicate end of scan results 1101 * @p2p: P2P module context from p2p_init() 1102 * 1103 * This function is called to indicate that all P2P scan results from a scan 1104 * have been reported with zero or more calls to p2p_scan_res_handler(). This 1105 * function must be called as a response to successful 1106 * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler() 1107 * calls stopped iteration. 1108 */ 1109 void p2p_scan_res_handled(struct p2p_data *p2p); 1110 1111 enum p2p_send_action_result { 1112 P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */, 1113 P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */, 1114 P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */ 1115 }; 1116 1117 /** 1118 * p2p_send_action_cb - Notify TX status of an Action frame 1119 * @p2p: P2P module context from p2p_init() 1120 * @freq: Channel frequency in MHz 1121 * @dst: Destination MAC address (Address 1) 1122 * @src: Source MAC address (Address 2) 1123 * @bssid: BSSID (Address 3) 1124 * @result: Result of the transmission attempt 1125 * 1126 * This function is used to indicate the result of an Action frame transmission 1127 * that was requested with struct p2p_config::send_action() callback. 1128 */ 1129 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 1130 const u8 *src, const u8 *bssid, 1131 enum p2p_send_action_result result); 1132 1133 /** 1134 * p2p_listen_cb - Indicate the start of a requested Listen state 1135 * @p2p: P2P module context from p2p_init() 1136 * @freq: Listen channel frequency in MHz 1137 * @duration: Duration for the Listen state in milliseconds 1138 * 1139 * This function is used to indicate that a Listen state requested with 1140 * struct p2p_config::start_listen() callback has started. 1141 */ 1142 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 1143 unsigned int duration); 1144 1145 /** 1146 * p2p_listen_end - Indicate the end of a requested Listen state 1147 * @p2p: P2P module context from p2p_init() 1148 * @freq: Listen channel frequency in MHz 1149 * Returns: 0 if no operations were started, 1 if an operation was started 1150 * 1151 * This function is used to indicate that a Listen state requested with 1152 * struct p2p_config::start_listen() callback has ended. 1153 */ 1154 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq); 1155 1156 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1157 const u8 *ie, size_t ie_len); 1158 1159 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 1160 const u8 *ie, size_t ie_len); 1161 1162 1163 /* Per-group P2P state for GO */ 1164 1165 struct p2p_group; 1166 1167 /** 1168 * struct p2p_group_config - P2P group configuration 1169 * 1170 * This configuration is provided to the P2P module during initialization of 1171 * the per-group information with p2p_group_init(). 1172 */ 1173 struct p2p_group_config { 1174 /** 1175 * persistent_group - Whether the group is persistent 1176 */ 1177 int persistent_group; 1178 1179 /** 1180 * interface_addr - P2P Interface Address of the group 1181 */ 1182 u8 interface_addr[ETH_ALEN]; 1183 1184 /** 1185 * max_clients - Maximum number of clients in the group 1186 */ 1187 unsigned int max_clients; 1188 1189 /** 1190 * cb_ctx - Context to use with callback functions 1191 */ 1192 void *cb_ctx; 1193 1194 /** 1195 * ie_update - Notification of IE update 1196 * @ctx: Callback context from cb_ctx 1197 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change 1198 * @proberesp_ies: P2P Ie for Probe Response frames 1199 * 1200 * P2P module uses this callback function to notify whenever the P2P IE 1201 * in Beacon or Probe Response frames should be updated based on group 1202 * events. 1203 * 1204 * The callee is responsible for freeing the returned buffer(s) with 1205 * wpabuf_free(). 1206 */ 1207 void (*ie_update)(void *ctx, struct wpabuf *beacon_ies, 1208 struct wpabuf *proberesp_ies); 1209 1210 /** 1211 * idle_update - Notification of changes in group idle state 1212 * @ctx: Callback context from cb_ctx 1213 * @idle: Whether the group is idle (no associated stations) 1214 */ 1215 void (*idle_update)(void *ctx, int idle); 1216 }; 1217 1218 /** 1219 * p2p_group_init - Initialize P2P group 1220 * @p2p: P2P module context from p2p_init() 1221 * @config: P2P group configuration (will be freed by p2p_group_deinit()) 1222 * Returns: Pointer to private data or %NULL on failure 1223 * 1224 * This function is used to initialize per-group P2P module context. Currently, 1225 * this is only used to manage GO functionality and P2P clients do not need to 1226 * create an instance of this per-group information. 1227 */ 1228 struct p2p_group * p2p_group_init(struct p2p_data *p2p, 1229 struct p2p_group_config *config); 1230 1231 /** 1232 * p2p_group_deinit - Deinitialize P2P group 1233 * @group: P2P group context from p2p_group_init() 1234 */ 1235 void p2p_group_deinit(struct p2p_group *group); 1236 1237 /** 1238 * p2p_group_notif_assoc - Notification of P2P client association with GO 1239 * @group: P2P group context from p2p_group_init() 1240 * @addr: Interface address of the P2P client 1241 * @ie: IEs from the (Re)association Request frame 1242 * @len: Length of the ie buffer in octets 1243 * Returns: 0 on success, -1 on failure 1244 */ 1245 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr, 1246 const u8 *ie, size_t len); 1247 #ifdef ANDROID_BRCM_P2P_PATCH 1248 /** 1249 * p2p_group_get_dev_addr - Retreive the device address of an assocated P2P 1250 * client. 1251 * @group: P2P group context from p2p_group_init() 1252 * @addr: Interface address of the P2P client 1253 * Returns: P2P dev_addr on success, NULL on failure 1254 */ 1255 u8 *p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr); 1256 #endif /*ANDROID_BRCM_P2P_PATCH */ 1257 1258 /** 1259 * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response 1260 * @group: P2P group context from p2p_group_init() 1261 * @status: Status value (P2P_SC_SUCCESS if association succeeded) 1262 * Returns: P2P IE for (Re)association Response or %NULL on failure 1263 * 1264 * The caller is responsible for freeing the returned buffer with 1265 * wpabuf_free(). 1266 */ 1267 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status); 1268 1269 /** 1270 * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO 1271 * @group: P2P group context from p2p_group_init() 1272 * @addr: Interface address of the P2P client 1273 */ 1274 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr); 1275 1276 /** 1277 * p2p_group_notif_formation_done - Notification of completed group formation 1278 * @group: P2P group context from p2p_group_init() 1279 */ 1280 void p2p_group_notif_formation_done(struct p2p_group *group); 1281 1282 /** 1283 * p2p_group_notif_noa - Notification of NoA change 1284 * @group: P2P group context from p2p_group_init() 1285 * @noa: Notice of Absence attribute payload, %NULL if none 1286 * @noa_len: Length of noa buffer in octets 1287 * Returns: 0 on success, -1 on failure 1288 * 1289 * Notify the P2P group management about a new NoA contents. This will be 1290 * inserted into the P2P IEs in Beacon and Probe Response frames with rest of 1291 * the group information. 1292 */ 1293 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa, 1294 size_t noa_len); 1295 1296 /** 1297 * p2p_group_match_dev_type - Match device types in group with requested type 1298 * @group: P2P group context from p2p_group_init() 1299 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 1300 * Returns: 1 on match, 0 on mismatch 1301 * 1302 * This function can be used to match the Requested Device Type attribute in 1303 * WPS IE with the device types of a group member for deciding whether a GO 1304 * should reply to a Probe Request frame. Match will be reported if the WPS IE 1305 * is not requested any specific device type. 1306 */ 1307 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps); 1308 1309 /** 1310 * p2p_group_go_discover - Send GO Discoverability Request to a group client 1311 * @group: P2P group context from p2p_group_init() 1312 * Returns: 0 on success (frame scheduled); -1 if client was not found 1313 */ 1314 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id, 1315 const u8 *searching_dev, int rx_freq); 1316 1317 1318 /* Generic helper functions */ 1319 1320 /** 1321 * p2p_ie_text - Build text format description of P2P IE 1322 * @p2p_ie: P2P IE 1323 * @buf: Buffer for returning text 1324 * @end: Pointer to the end of the buf area 1325 * Returns: Number of octets written to the buffer or -1 on failure 1326 * 1327 * This function can be used to parse P2P IE contents into text format 1328 * field=value lines. 1329 */ 1330 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end); 1331 1332 /** 1333 * p2p_scan_result_text - Build text format description of P2P IE 1334 * @ies: Information elements from scan results 1335 * @ies_len: ies buffer length in octets 1336 * @buf: Buffer for returning text 1337 * @end: Pointer to the end of the buf area 1338 * Returns: Number of octets written to the buffer or -1 on failure 1339 * 1340 * This function can be used to parse P2P IE contents into text format 1341 * field=value lines. 1342 */ 1343 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end); 1344 1345 /** 1346 * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame 1347 * @p2p: P2P module context from p2p_init() 1348 * @bssid: BSSID 1349 * @buf: Buffer for writing the P2P IE 1350 * @len: Maximum buf length in octets 1351 * @p2p_group: Whether this is for association with a P2P GO 1352 * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none 1353 * Returns: Number of octets written into buf or -1 on failure 1354 */ 1355 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 1356 size_t len, int p2p_group, struct wpabuf *p2p_ie); 1357 1358 /** 1359 * p2p_scan_ie - Build P2P IE for Probe Request 1360 * @p2p: P2P module context from p2p_init() 1361 * @ies: Buffer for writing P2P IE 1362 */ 1363 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies); 1364 1365 /** 1366 * p2p_go_params - Generate random P2P group parameters 1367 * @p2p: P2P module context from p2p_init() 1368 * @params: Buffer for parameters 1369 * Returns: 0 on success, -1 on failure 1370 */ 1371 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params); 1372 1373 /** 1374 * p2p_get_group_capab - Get Group Capability from P2P IE data 1375 * @p2p_ie: P2P IE(s) contents 1376 * Returns: Group Capability 1377 */ 1378 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie); 1379 1380 /** 1381 * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection 1382 * @p2p_ie: P2P IE(s) contents 1383 * Returns: 0 if cross connection is allow, 1 if not 1384 */ 1385 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie); 1386 1387 /** 1388 * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data 1389 * @p2p_ie: P2P IE(s) contents 1390 * Returns: Pointer to P2P Device Address or %NULL if not included 1391 */ 1392 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie); 1393 1394 /** 1395 * p2p_get_peer_info - Get P2P peer information in text format 1396 * @p2p: P2P module context from p2p_init() 1397 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1398 * @next: Whether to select the peer entry following the one indicated by addr 1399 * @buf: Buffer for returning text 1400 * @buflen: Maximum buffer length 1401 * Returns: Number of octets written to the buffer or -1 on failure 1402 */ 1403 int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next, 1404 char *buf, size_t buflen); 1405 1406 /** 1407 * p2p_set_client_discoverability - Set client discoverability capability 1408 * @p2p: P2P module context from p2p_init() 1409 * @enabled: Whether client discoverability will be enabled 1410 * 1411 * This function can be used to disable (and re-enable) client discoverability. 1412 * This capability is enabled by default and should not be disabled in normal 1413 * use cases, i.e., this is mainly for testing purposes. 1414 */ 1415 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled); 1416 1417 /** 1418 * p2p_set_manageD_oper - Set managed P2P Device operations capability 1419 * @p2p: P2P module context from p2p_init() 1420 * @enabled: Whether managed P2P Device operations will be enabled 1421 */ 1422 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled); 1423 1424 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel); 1425 1426 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len); 1427 1428 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 1429 u8 *iface_addr); 1430 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 1431 u8 *dev_addr); 1432 1433 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr); 1434 1435 /** 1436 * p2p_set_cross_connect - Set cross connection capability 1437 * @p2p: P2P module context from p2p_init() 1438 * @enabled: Whether cross connection will be enabled 1439 */ 1440 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled); 1441 1442 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr); 1443 1444 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level, 1445 const u8 *ies, size_t ies_len); 1446 1447 /** 1448 * p2p_set_intra_bss_dist - Set intra BSS distribution 1449 * @p2p: P2P module context from p2p_init() 1450 * @enabled: Whether intra BSS distribution will be enabled 1451 */ 1452 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled); 1453 1454 /** 1455 * p2p_supported_freq - Check whether channel is supported for P2P 1456 * @p2p: P2P module context from p2p_init() 1457 * @freq: Channel frequency in MHz 1458 * Returns: 0 if channel not usable for P2P, 1 if usable for P2P 1459 */ 1460 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq); 1461 1462 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan); 1463 1464 /** 1465 * p2p_set_best_channels - Update best channel information 1466 * @p2p: P2P module context from p2p_init() 1467 * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band 1468 * @freq_5: Frequency (MHz) of best channel in 5 GHz band 1469 * @freq_overall: Frequency (MHz) of best channel overall 1470 */ 1471 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 1472 int freq_overall); 1473 1474 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p); 1475 1476 /** 1477 * p2p_get_group_num_members - Get number of members in group 1478 * @group: P2P group context from p2p_group_init() 1479 * Returns: Number of members in the group 1480 */ 1481 unsigned int p2p_get_group_num_members(struct p2p_group *group); 1482 1483 /** 1484 * p2p_iterate_group_members - Iterate group members 1485 * @group: P2P group context from p2p_group_init() 1486 * @next: iteration pointer, must be a pointer to a void * that is set to %NULL 1487 * on the first call and not modified later 1488 * Returns: A P2P Interface Address for each call and %NULL for no more members 1489 */ 1490 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next); 1491 1492 /** 1493 * p2p_get_peer_found - Get P2P peer info structure of a found peer 1494 * @p2p: P2P module context from p2p_init() 1495 * @addr: P2P Device Address of the peer or %NULL to indicate the first peer 1496 * @next: Whether to select the peer entry following the one indicated by addr 1497 * Returns: The first P2P peer info available or %NULL if no such peer exists 1498 */ 1499 const struct p2p_peer_info * 1500 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next); 1501 1502 /** 1503 * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions 1504 * @p2p: P2P module context from p2p_init() 1505 */ 1506 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p); 1507 1508 /** 1509 * p2p_add_wps_vendor_extension - Add a WPS vendor extension 1510 * @p2p: P2P module context from p2p_init() 1511 * @vendor_ext: The vendor extensions to add 1512 * Returns: 0 on success, -1 on failure 1513 * 1514 * The wpabuf structures in the array are owned by the P2P 1515 * module after this call. 1516 */ 1517 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 1518 const struct wpabuf *vendor_ext); 1519 1520 /** 1521 * p2p_set_oper_channel - Set the P2P operating channel 1522 * @p2p: P2P module context from p2p_init() 1523 * @op_reg_class: Operating regulatory class to set 1524 * @op_channel: operating channel to set 1525 * @cfg_op_channel : Whether op_channel is hardcoded in configuration 1526 * Returns: 0 on success, -1 on failure 1527 */ 1528 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 1529 int cfg_op_channel); 1530 1531 #endif /* P2P_H */ 1532