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      1 /*
      2  * Wi-Fi Direct - P2P module
      3  * Copyright (c) 2009-2010, Atheros Communications
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #ifndef P2P_H
     10 #define P2P_H
     11 
     12 #include "common/ieee802_11_defs.h"
     13 #include "wps/wps.h"
     14 
     15 /* P2P ASP Setup Capability */
     16 #define P2PS_SETUP_NONE 0
     17 #define P2PS_SETUP_NEW BIT(0)
     18 #define P2PS_SETUP_CLIENT BIT(1)
     19 #define P2PS_SETUP_GROUP_OWNER BIT(2)
     20 
     21 #define P2PS_WILD_HASH_STR "org.wi-fi.wfds"
     22 #define P2PS_HASH_LEN 6
     23 #define P2P_MAX_QUERY_HASH 6
     24 #define P2PS_FEATURE_CAPAB_CPT_MAX 2
     25 
     26 /**
     27  * P2P_MAX_PREF_CHANNELS - Maximum number of preferred channels
     28  */
     29 #define P2P_MAX_PREF_CHANNELS 100
     30 
     31 /**
     32  * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes
     33  */
     34 #define P2P_MAX_REG_CLASSES 15
     35 
     36 /**
     37  * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class
     38  */
     39 #define P2P_MAX_REG_CLASS_CHANNELS 20
     40 
     41 /**
     42  * struct p2p_channels - List of supported channels
     43  */
     44 struct p2p_channels {
     45 	/**
     46 	 * struct p2p_reg_class - Supported regulatory class
     47 	 */
     48 	struct p2p_reg_class {
     49 		/**
     50 		 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J)
     51 		 */
     52 		u8 reg_class;
     53 
     54 		/**
     55 		 * channel - Supported channels
     56 		 */
     57 		u8 channel[P2P_MAX_REG_CLASS_CHANNELS];
     58 
     59 		/**
     60 		 * channels - Number of channel entries in use
     61 		 */
     62 		size_t channels;
     63 	} reg_class[P2P_MAX_REG_CLASSES];
     64 
     65 	/**
     66 	 * reg_classes - Number of reg_class entries in use
     67 	 */
     68 	size_t reg_classes;
     69 };
     70 
     71 enum p2p_wps_method {
     72 	WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC, WPS_NFC,
     73 	WPS_P2PS
     74 };
     75 
     76 /**
     77  * struct p2p_go_neg_results - P2P Group Owner Negotiation results
     78  */
     79 struct p2p_go_neg_results {
     80 	/**
     81 	 * status - Negotiation result (Status Code)
     82 	 *
     83 	 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate
     84 	 * failed negotiation.
     85 	 */
     86 	int status;
     87 
     88 	/**
     89 	 * role_go - Whether local end is Group Owner
     90 	 */
     91 	int role_go;
     92 
     93 	/**
     94 	 * freq - Frequency of the group operational channel in MHz
     95 	 */
     96 	int freq;
     97 
     98 	int ht40;
     99 
    100 	int vht;
    101 
    102 	u8 max_oper_chwidth;
    103 
    104 	unsigned int vht_center_freq2;
    105 
    106 	/**
    107 	 * ssid - SSID of the group
    108 	 */
    109 	u8 ssid[SSID_MAX_LEN];
    110 
    111 	/**
    112 	 * ssid_len - Length of SSID in octets
    113 	 */
    114 	size_t ssid_len;
    115 
    116 	/**
    117 	 * psk - WPA pre-shared key (256 bits) (GO only)
    118 	 */
    119 	u8 psk[32];
    120 
    121 	/**
    122 	 * psk_set - Whether PSK field is configured (GO only)
    123 	 */
    124 	int psk_set;
    125 
    126 	/**
    127 	 * passphrase - WPA2-Personal passphrase for the group (GO only)
    128 	 */
    129 	char passphrase[64];
    130 
    131 	/**
    132 	 * peer_device_addr - P2P Device Address of the peer
    133 	 */
    134 	u8 peer_device_addr[ETH_ALEN];
    135 
    136 	/**
    137 	 * peer_interface_addr - P2P Interface Address of the peer
    138 	 */
    139 	u8 peer_interface_addr[ETH_ALEN];
    140 
    141 	/**
    142 	 * wps_method - WPS method to be used during provisioning
    143 	 */
    144 	enum p2p_wps_method wps_method;
    145 
    146 #define P2P_MAX_CHANNELS 50
    147 
    148 	/**
    149 	 * freq_list - Zero-terminated list of possible operational channels
    150 	 */
    151 	int freq_list[P2P_MAX_CHANNELS];
    152 
    153 	/**
    154 	 * persistent_group - Whether the group should be made persistent
    155 	 * 0 = not persistent
    156 	 * 1 = persistent group without persistent reconnect
    157 	 * 2 = persistent group with persistent reconnect
    158 	 */
    159 	int persistent_group;
    160 
    161 	/**
    162 	 * peer_config_timeout - Peer configuration timeout (in 10 msec units)
    163 	 */
    164 	unsigned int peer_config_timeout;
    165 };
    166 
    167 struct p2ps_provision {
    168 	/**
    169 	 * pd_seeker - P2PS provision discovery seeker role
    170 	 */
    171 	unsigned int pd_seeker:1;
    172 
    173 	/**
    174 	 * status - Remote returned provisioning status code
    175 	 */
    176 	int status;
    177 
    178 	/**
    179 	 * adv_id - P2PS Advertisement ID
    180 	 */
    181 	u32 adv_id;
    182 
    183 	/**
    184 	 * session_id - P2PS Session ID
    185 	 */
    186 	u32 session_id;
    187 
    188 	/**
    189 	 * method - WPS Method (to be) used to establish session
    190 	 */
    191 	u16 method;
    192 
    193 	/**
    194 	 * conncap - Connection Capabilities negotiated between P2P peers
    195 	 */
    196 	u8 conncap;
    197 
    198 	/**
    199 	 * role - Info about the roles to be used for this connection
    200 	 */
    201 	u8 role;
    202 
    203 	/**
    204 	 * session_mac - MAC address of the peer that started the session
    205 	 */
    206 	u8 session_mac[ETH_ALEN];
    207 
    208 	/**
    209 	 * adv_mac - MAC address of the peer advertised the service
    210 	 */
    211 	u8 adv_mac[ETH_ALEN];
    212 
    213 	/**
    214 	 * cpt_mask - Supported Coordination Protocol Transport mask
    215 	 *
    216 	 * A bitwise mask of supported ASP Coordination Protocol Transports.
    217 	 * This property is set together and corresponds with cpt_priority.
    218 	 */
    219 	u8 cpt_mask;
    220 
    221 	/**
    222 	 * cpt_priority - Coordination Protocol Transport priority list
    223 	 *
    224 	 * Priorities of supported ASP Coordination Protocol Transports.
    225 	 * This property is set together and corresponds with cpt_mask.
    226 	 * The CPT priority list is 0 terminated.
    227 	 */
    228 	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
    229 
    230 	/**
    231 	 * force_freq - The only allowed channel frequency in MHz or 0.
    232 	 */
    233 	unsigned int force_freq;
    234 
    235 	/**
    236 	 * pref_freq - Preferred operating frequency in MHz or 0.
    237 	 */
    238 	unsigned int pref_freq;
    239 
    240 	/**
    241 	 * info - Vendor defined extra Provisioning information
    242 	 */
    243 	char info[0];
    244 };
    245 
    246 struct p2ps_advertisement {
    247 	struct p2ps_advertisement *next;
    248 
    249 	/**
    250 	 * svc_info - Pointer to (internal) Service defined information
    251 	 */
    252 	char *svc_info;
    253 
    254 	/**
    255 	 * id - P2PS Advertisement ID
    256 	 */
    257 	u32 id;
    258 
    259 	/**
    260 	 * config_methods - WPS Methods which are allowed for this service
    261 	 */
    262 	u16 config_methods;
    263 
    264 	/**
    265 	 * state - Current state of the service: 0 - Out Of Service, 1-255 Vendor defined
    266 	 */
    267 	u8 state;
    268 
    269 	/**
    270 	 * auto_accept - Automatically Accept provisioning request if possible.
    271 	 */
    272 	u8 auto_accept;
    273 
    274 	/**
    275 	 * hash - 6 octet Service Name has to match against incoming Probe Requests
    276 	 */
    277 	u8 hash[P2PS_HASH_LEN];
    278 
    279 	/**
    280 	 * cpt_mask - supported Coordination Protocol Transport mask
    281 	 *
    282 	 * A bitwise mask of supported ASP Coordination Protocol Transports.
    283 	 * This property is set together and corresponds with cpt_priority.
    284 	 */
    285 	u8 cpt_mask;
    286 
    287 	/**
    288 	 * cpt_priority - Coordination Protocol Transport priority list
    289 	 *
    290 	 * Priorities of supported ASP Coordinatin Protocol Transports.
    291 	 * This property is set together and corresponds with cpt_mask.
    292 	 * The CPT priority list is 0 terminated.
    293 	 */
    294 	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
    295 
    296 	/**
    297 	 * svc_name - NULL Terminated UTF-8 Service Name, and svc_info storage
    298 	 */
    299 	char svc_name[0];
    300 };
    301 
    302 
    303 struct p2p_data;
    304 
    305 enum p2p_scan_type {
    306 	P2P_SCAN_SOCIAL,
    307 	P2P_SCAN_FULL,
    308 	P2P_SCAN_SPECIFIC,
    309 	P2P_SCAN_SOCIAL_PLUS_ONE
    310 };
    311 
    312 #define P2P_MAX_WPS_VENDOR_EXT 10
    313 
    314 /**
    315  * struct p2p_peer_info - P2P peer information
    316  */
    317 struct p2p_peer_info {
    318 	/**
    319 	 * p2p_device_addr - P2P Device Address of the peer
    320 	 */
    321 	u8 p2p_device_addr[ETH_ALEN];
    322 
    323 	/**
    324 	 * pri_dev_type - Primary Device Type
    325 	 */
    326 	u8 pri_dev_type[8];
    327 
    328 	/**
    329 	 * device_name - Device Name (0..32 octets encoded in UTF-8)
    330 	 */
    331 	char device_name[WPS_DEV_NAME_MAX_LEN + 1];
    332 
    333 	/**
    334 	 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8)
    335 	 */
    336 	char manufacturer[WPS_MANUFACTURER_MAX_LEN + 1];
    337 
    338 	/**
    339 	 * model_name - Model Name (0..32 octets encoded in UTF-8)
    340 	 */
    341 	char model_name[WPS_MODEL_NAME_MAX_LEN + 1];
    342 
    343 	/**
    344 	 * model_number - Model Number (0..32 octets encoded in UTF-8)
    345 	 */
    346 	char model_number[WPS_MODEL_NUMBER_MAX_LEN + 1];
    347 
    348 	/**
    349 	 * serial_number - Serial Number (0..32 octets encoded in UTF-8)
    350 	 */
    351 	char serial_number[WPS_SERIAL_NUMBER_MAX_LEN + 1];
    352 
    353 	/**
    354 	 * level - Signal level
    355 	 */
    356 	int level;
    357 
    358 	/**
    359 	 * config_methods - WPS Configuration Methods
    360 	 */
    361 	u16 config_methods;
    362 
    363 	/**
    364 	 * dev_capab - Device Capabilities
    365 	 */
    366 	u8 dev_capab;
    367 
    368 	/**
    369 	 * group_capab - Group Capabilities
    370 	 */
    371 	u8 group_capab;
    372 
    373 	/**
    374 	 * wps_sec_dev_type_list - WPS secondary device type list
    375 	 *
    376 	 * This list includes from 0 to 16 Secondary Device Types as indicated
    377 	 * by wps_sec_dev_type_list_len (8 * number of types).
    378 	 */
    379 	u8 wps_sec_dev_type_list[WPS_SEC_DEV_TYPE_MAX_LEN];
    380 
    381 	/**
    382 	 * wps_sec_dev_type_list_len - Length of secondary device type list
    383 	 */
    384 	size_t wps_sec_dev_type_list_len;
    385 
    386 	struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
    387 
    388 	/**
    389 	 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s)
    390 	 */
    391 	struct wpabuf *wfd_subelems;
    392 
    393 	/**
    394 	 * vendor_elems - Unrecognized vendor elements
    395 	 *
    396 	 * This buffer includes any other vendor element than P2P, WPS, and WFD
    397 	 * IE(s) from the frame that was used to discover the peer.
    398 	 */
    399 	struct wpabuf *vendor_elems;
    400 
    401 	/**
    402 	 * p2ps_instance - P2PS Application Service Info
    403 	 */
    404 	struct wpabuf *p2ps_instance;
    405 };
    406 
    407 enum p2p_prov_disc_status {
    408 	P2P_PROV_DISC_SUCCESS,
    409 	P2P_PROV_DISC_TIMEOUT,
    410 	P2P_PROV_DISC_REJECTED,
    411 	P2P_PROV_DISC_TIMEOUT_JOIN,
    412 	P2P_PROV_DISC_INFO_UNAVAILABLE,
    413 };
    414 
    415 struct p2p_channel {
    416 	u8 op_class;
    417 	u8 chan;
    418 };
    419 
    420 /**
    421  * struct p2p_config - P2P configuration
    422  *
    423  * This configuration is provided to the P2P module during initialization with
    424  * p2p_init().
    425  */
    426 struct p2p_config {
    427 	/**
    428 	 * country - Country code to use in P2P operations
    429 	 */
    430 	char country[3];
    431 
    432 	/**
    433 	 * reg_class - Regulatory class for own listen channel
    434 	 */
    435 	u8 reg_class;
    436 
    437 	/**
    438 	 * channel - Own listen channel
    439 	 */
    440 	u8 channel;
    441 
    442 	/**
    443 	 * channel_forced - the listen channel was forced by configuration
    444 	 *                  or by control interface and cannot be overridden
    445 	 */
    446 	u8 channel_forced;
    447 
    448 	/**
    449 	 * Regulatory class for own operational channel
    450 	 */
    451 	u8 op_reg_class;
    452 
    453 	/**
    454 	 * op_channel - Own operational channel
    455 	 */
    456 	u8 op_channel;
    457 
    458 	/**
    459 	 * cfg_op_channel - Whether op_channel is hardcoded in configuration
    460 	 */
    461 	u8 cfg_op_channel;
    462 
    463 	/**
    464 	 * channels - Own supported regulatory classes and channels
    465 	 *
    466 	 * List of supposerted channels per regulatory class. The regulatory
    467 	 * classes are defined in IEEE Std 802.11-2007 Annex J and the
    468 	 * numbering of the clases depends on the configured country code.
    469 	 */
    470 	struct p2p_channels channels;
    471 
    472 	/**
    473 	 * cli_channels - Additional client channels
    474 	 *
    475 	 * This list of channels (if any) will be used when advertising local
    476 	 * channels during GO Negotiation or Invitation for the cases where the
    477 	 * local end may become the client. This may allow the peer to become a
    478 	 * GO on additional channels if it supports these options. The main use
    479 	 * case for this is to include passive-scan channels on devices that may
    480 	 * not know their current location and have configured most channels to
    481 	 * not allow initiation of radition (i.e., another device needs to take
    482 	 * master responsibilities).
    483 	 */
    484 	struct p2p_channels cli_channels;
    485 
    486 	/**
    487 	 * num_pref_chan - Number of pref_chan entries
    488 	 */
    489 	unsigned int num_pref_chan;
    490 
    491 	/**
    492 	 * pref_chan - Preferred channels for GO Negotiation
    493 	 */
    494 	struct p2p_channel *pref_chan;
    495 
    496 	/**
    497 	 * pri_dev_type - Primary Device Type (see WPS)
    498 	 */
    499 	u8 pri_dev_type[8];
    500 
    501 	/**
    502 	 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types
    503 	 */
    504 #define P2P_SEC_DEVICE_TYPES 5
    505 
    506 	/**
    507 	 * sec_dev_type - Optional secondary device types
    508 	 */
    509 	u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
    510 
    511 	/**
    512 	 * num_sec_dev_types - Number of sec_dev_type entries
    513 	 */
    514 	size_t num_sec_dev_types;
    515 
    516 	/**
    517 	 * dev_addr - P2P Device Address
    518 	 */
    519 	u8 dev_addr[ETH_ALEN];
    520 
    521 	/**
    522 	 * dev_name - Device Name
    523 	 */
    524 	char *dev_name;
    525 
    526 	char *manufacturer;
    527 	char *model_name;
    528 	char *model_number;
    529 	char *serial_number;
    530 
    531 	u8 uuid[16];
    532 	u16 config_methods;
    533 
    534 	/**
    535 	 * concurrent_operations - Whether concurrent operations are supported
    536 	 */
    537 	int concurrent_operations;
    538 
    539 	/**
    540 	 * max_peers - Maximum number of discovered peers to remember
    541 	 *
    542 	 * If more peers are discovered, older entries will be removed to make
    543 	 * room for the new ones.
    544 	 */
    545 	size_t max_peers;
    546 
    547 	/**
    548 	 * p2p_intra_bss - Intra BSS communication is supported
    549 	 */
    550 	int p2p_intra_bss;
    551 
    552 	/**
    553 	 * ssid_postfix - Postfix data to add to the SSID
    554 	 *
    555 	 * This data will be added to the end of the SSID after the
    556 	 * DIRECT-<random two octets> prefix.
    557 	 */
    558 	u8 ssid_postfix[SSID_MAX_LEN - 9];
    559 
    560 	/**
    561 	 * ssid_postfix_len - Length of the ssid_postfix data
    562 	 */
    563 	size_t ssid_postfix_len;
    564 
    565 	/**
    566 	 * max_listen - Maximum listen duration in ms
    567 	 */
    568 	unsigned int max_listen;
    569 
    570 	/**
    571 	 * passphrase_len - Passphrase length (8..63)
    572 	 *
    573 	 * This parameter controls the length of the random passphrase that is
    574 	 * generated at the GO.
    575 	 */
    576 	unsigned int passphrase_len;
    577 
    578 	/**
    579 	 * cb_ctx - Context to use with callback functions
    580 	 */
    581 	void *cb_ctx;
    582 
    583 	/**
    584 	 * debug_print - Debug print
    585 	 * @ctx: Callback context from cb_ctx
    586 	 * @level: Debug verbosity level (MSG_*)
    587 	 * @msg: Debug message
    588 	 */
    589 	void (*debug_print)(void *ctx, int level, const char *msg);
    590 
    591 
    592 	/* Callbacks to request lower layer driver operations */
    593 
    594 	/**
    595 	 * p2p_scan - Request a P2P scan/search
    596 	 * @ctx: Callback context from cb_ctx
    597 	 * @type: Scan type
    598 	 * @freq: Specific frequency (MHz) to scan or 0 for no restriction
    599 	 * @num_req_dev_types: Number of requested device types
    600 	 * @req_dev_types: Array containing requested device types
    601 	 * @dev_id: Device ID to search for or %NULL to find all devices
    602 	 * @pw_id: Device Password ID
    603 	 * Returns: 0 on success, -1 on failure
    604 	 *
    605 	 * This callback function is used to request a P2P scan or search
    606 	 * operation to be completed. Type type argument specifies which type
    607 	 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the
    608 	 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL
    609 	 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC
    610 	 * request a scan of a single channel specified by freq.
    611 	 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels
    612 	 * plus one extra channel specified by freq.
    613 	 *
    614 	 * The full scan is used for the initial scan to find group owners from
    615 	 * all. The other types are used during search phase scan of the social
    616 	 * channels (with potential variation if the Listen channel of the
    617 	 * target peer is known or if other channels are scanned in steps).
    618 	 *
    619 	 * The scan results are returned after this call by calling
    620 	 * p2p_scan_res_handler() for each scan result that has a P2P IE and
    621 	 * then calling p2p_scan_res_handled() to indicate that all scan
    622 	 * results have been indicated.
    623 	 */
    624 	int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq,
    625 			unsigned int num_req_dev_types,
    626 			const u8 *req_dev_types, const u8 *dev_id, u16 pw_id);
    627 
    628 	/**
    629 	 * send_probe_resp - Transmit a Probe Response frame
    630 	 * @ctx: Callback context from cb_ctx
    631 	 * @buf: Probe Response frame (including the header and body)
    632 	 * @freq: Forced frequency (in MHz) to use or 0.
    633 	 * Returns: 0 on success, -1 on failure
    634 	 *
    635 	 * This function is used to reply to Probe Request frames that were
    636 	 * indicated with a call to p2p_probe_req_rx(). The response is to be
    637 	 * sent on the same channel, unless otherwise specified, or to be
    638 	 * dropped if the driver is not listening to Probe Request frames
    639 	 * anymore.
    640 	 *
    641 	 * Alternatively, the responsibility for building the Probe Response
    642 	 * frames in Listen state may be in another system component in which
    643 	 * case this function need to be implemented (i.e., the function
    644 	 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe
    645 	 * Response frames in such a case are available from the
    646 	 * start_listen() callback. It should be noted that the received Probe
    647 	 * Request frames must be indicated by calling p2p_probe_req_rx() even
    648 	 * if this send_probe_resp() is not used.
    649 	 */
    650 	int (*send_probe_resp)(void *ctx, const struct wpabuf *buf,
    651 			       unsigned int freq);
    652 
    653 	/**
    654 	 * send_action - Transmit an Action frame
    655 	 * @ctx: Callback context from cb_ctx
    656 	 * @freq: Frequency in MHz for the channel on which to transmit
    657 	 * @dst: Destination MAC address (Address 1)
    658 	 * @src: Source MAC address (Address 2)
    659 	 * @bssid: BSSID (Address 3)
    660 	 * @buf: Frame body (starting from Category field)
    661 	 * @len: Length of buf in octets
    662 	 * @wait_time: How many msec to wait for a response frame
    663 	 * Returns: 0 on success, -1 on failure
    664 	 *
    665 	 * The Action frame may not be transmitted immediately and the status
    666 	 * of the transmission must be reported by calling
    667 	 * p2p_send_action_cb() once the frame has either been transmitted or
    668 	 * it has been dropped due to excessive retries or other failure to
    669 	 * transmit.
    670 	 */
    671 	int (*send_action)(void *ctx, unsigned int freq, const u8 *dst,
    672 			   const u8 *src, const u8 *bssid, const u8 *buf,
    673 			   size_t len, unsigned int wait_time);
    674 
    675 	/**
    676 	 * send_action_done - Notify that Action frame sequence was completed
    677 	 * @ctx: Callback context from cb_ctx
    678 	 *
    679 	 * This function is called when the Action frame sequence that was
    680 	 * started with send_action() has been completed, i.e., when there is
    681 	 * no need to wait for a response from the destination peer anymore.
    682 	 */
    683 	void (*send_action_done)(void *ctx);
    684 
    685 	/**
    686 	 * start_listen - Start Listen state
    687 	 * @ctx: Callback context from cb_ctx
    688 	 * @freq: Frequency of the listen channel in MHz
    689 	 * @duration: Duration for the Listen state in milliseconds
    690 	 * @probe_resp_ie: IE(s) to be added to Probe Response frames
    691 	 * Returns: 0 on success, -1 on failure
    692 	 *
    693 	 * This Listen state may not start immediately since the driver may
    694 	 * have other pending operations to complete first. Once the Listen
    695 	 * state has started, p2p_listen_cb() must be called to notify the P2P
    696 	 * module. Once the Listen state is stopped, p2p_listen_end() must be
    697 	 * called to notify the P2P module that the driver is not in the Listen
    698 	 * state anymore.
    699 	 *
    700 	 * If the send_probe_resp() is not used for generating the response,
    701 	 * the IEs from probe_resp_ie need to be added to the end of the Probe
    702 	 * Response frame body. If send_probe_resp() is used, the probe_resp_ie
    703 	 * information can be ignored.
    704 	 */
    705 	int (*start_listen)(void *ctx, unsigned int freq,
    706 			    unsigned int duration,
    707 			    const struct wpabuf *probe_resp_ie);
    708 	/**
    709 	 * stop_listen - Stop Listen state
    710 	 * @ctx: Callback context from cb_ctx
    711 	 *
    712 	 * This callback can be used to stop a Listen state operation that was
    713 	 * previously requested with start_listen().
    714 	 */
    715 	void (*stop_listen)(void *ctx);
    716 
    717 	/**
    718 	 * get_noa - Get current Notice of Absence attribute payload
    719 	 * @ctx: Callback context from cb_ctx
    720 	 * @interface_addr: P2P Interface Address of the GO
    721 	 * @buf: Buffer for returning NoA
    722 	 * @buf_len: Buffer length in octets
    723 	 * Returns: Number of octets used in buf, 0 to indicate no NoA is being
    724 	 * advertized, or -1 on failure
    725 	 *
    726 	 * This function is used to fetch the current Notice of Absence
    727 	 * attribute value from GO.
    728 	 */
    729 	int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf,
    730 		       size_t buf_len);
    731 
    732 	/* Callbacks to notify events to upper layer management entity */
    733 
    734 	/**
    735 	 * dev_found - Notification of a found P2P Device
    736 	 * @ctx: Callback context from cb_ctx
    737 	 * @addr: Source address of the message triggering this notification
    738 	 * @info: P2P peer information
    739 	 * @new_device: Inform if the peer is newly found
    740 	 *
    741 	 * This callback is used to notify that a new P2P Device has been
    742 	 * found. This may happen, e.g., during Search state based on scan
    743 	 * results or during Listen state based on receive Probe Request and
    744 	 * Group Owner Negotiation Request.
    745 	 */
    746 	void (*dev_found)(void *ctx, const u8 *addr,
    747 			  const struct p2p_peer_info *info,
    748 			  int new_device);
    749 
    750 	/**
    751 	 * dev_lost - Notification of a lost P2P Device
    752 	 * @ctx: Callback context from cb_ctx
    753 	 * @dev_addr: P2P Device Address of the lost P2P Device
    754 	 *
    755 	 * This callback is used to notify that a P2P Device has been deleted.
    756 	 */
    757 	void (*dev_lost)(void *ctx, const u8 *dev_addr);
    758 
    759 	/**
    760 	 * find_stopped - Notification of a p2p_find operation stopping
    761 	 * @ctx: Callback context from cb_ctx
    762 	 */
    763 	void (*find_stopped)(void *ctx);
    764 
    765 	/**
    766 	 * go_neg_req_rx - Notification of a receive GO Negotiation Request
    767 	 * @ctx: Callback context from cb_ctx
    768 	 * @src: Source address of the message triggering this notification
    769 	 * @dev_passwd_id: WPS Device Password ID
    770 	 * @go_intent: Peer's GO Intent
    771 	 *
    772 	 * This callback is used to notify that a P2P Device is requesting
    773 	 * group owner negotiation with us, but we do not have all the
    774 	 * necessary information to start GO Negotiation. This indicates that
    775 	 * the local user has not authorized the connection yet by providing a
    776 	 * PIN or PBC button press. This information can be provided with a
    777 	 * call to p2p_connect().
    778 	 */
    779 	void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id,
    780 			      u8 go_intent);
    781 
    782 	/**
    783 	 * go_neg_completed - Notification of GO Negotiation results
    784 	 * @ctx: Callback context from cb_ctx
    785 	 * @res: GO Negotiation results
    786 	 *
    787 	 * This callback is used to notify that Group Owner Negotiation has
    788 	 * been completed. Non-zero struct p2p_go_neg_results::status indicates
    789 	 * failed negotiation. In case of success, this function is responsible
    790 	 * for creating a new group interface (or using the existing interface
    791 	 * depending on driver features), setting up the group interface in
    792 	 * proper mode based on struct p2p_go_neg_results::role_go and
    793 	 * initializing WPS provisioning either as a Registrar (if GO) or as an
    794 	 * Enrollee. Successful WPS provisioning must be indicated by calling
    795 	 * p2p_wps_success_cb(). The callee is responsible for timing out group
    796 	 * formation if WPS provisioning cannot be completed successfully
    797 	 * within 15 seconds.
    798 	 */
    799 	void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res);
    800 
    801 	/**
    802 	 * sd_request - Callback on Service Discovery Request
    803 	 * @ctx: Callback context from cb_ctx
    804 	 * @freq: Frequency (in MHz) of the channel
    805 	 * @sa: Source address of the request
    806 	 * @dialog_token: Dialog token
    807 	 * @update_indic: Service Update Indicator from the source of request
    808 	 * @tlvs: P2P Service Request TLV(s)
    809 	 * @tlvs_len: Length of tlvs buffer in octets
    810 	 *
    811 	 * This callback is used to indicate reception of a service discovery
    812 	 * request. Response to the query must be indicated by calling
    813 	 * p2p_sd_response() with the context information from the arguments to
    814 	 * this callback function.
    815 	 *
    816 	 * This callback handler can be set to %NULL to indicate that service
    817 	 * discovery is not supported.
    818 	 */
    819 	void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token,
    820 			   u16 update_indic, const u8 *tlvs, size_t tlvs_len);
    821 
    822 	/**
    823 	 * sd_response - Callback on Service Discovery Response
    824 	 * @ctx: Callback context from cb_ctx
    825 	 * @sa: Source address of the request
    826 	 * @update_indic: Service Update Indicator from the source of response
    827 	 * @tlvs: P2P Service Response TLV(s)
    828 	 * @tlvs_len: Length of tlvs buffer in octets
    829 	 *
    830 	 * This callback is used to indicate reception of a service discovery
    831 	 * response. This callback handler can be set to %NULL if no service
    832 	 * discovery requests are used. The information provided with this call
    833 	 * is replies to the queries scheduled with p2p_sd_request().
    834 	 */
    835 	void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic,
    836 			    const u8 *tlvs, size_t tlvs_len);
    837 
    838 	/**
    839 	 * prov_disc_req - Callback on Provisiong Discovery Request
    840 	 * @ctx: Callback context from cb_ctx
    841 	 * @peer: Source address of the request
    842 	 * @config_methods: Requested WPS Config Method
    843 	 * @dev_addr: P2P Device Address of the found P2P Device
    844 	 * @pri_dev_type: Primary Device Type
    845 	 * @dev_name: Device Name
    846 	 * @supp_config_methods: Supported configuration Methods
    847 	 * @dev_capab: Device Capabilities
    848 	 * @group_capab: Group Capabilities
    849 	 * @group_id: P2P Group ID (or %NULL if not included)
    850 	 * @group_id_len: Length of P2P Group ID
    851 	 *
    852 	 * This callback is used to indicate reception of a Provision Discovery
    853 	 * Request frame that the P2P module accepted.
    854 	 */
    855 	void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods,
    856 			      const u8 *dev_addr, const u8 *pri_dev_type,
    857 			      const char *dev_name, u16 supp_config_methods,
    858 			      u8 dev_capab, u8 group_capab,
    859 			      const u8 *group_id, size_t group_id_len);
    860 
    861 	/**
    862 	 * prov_disc_resp - Callback on Provisiong Discovery Response
    863 	 * @ctx: Callback context from cb_ctx
    864 	 * @peer: Source address of the response
    865 	 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure
    866 	 *
    867 	 * This callback is used to indicate reception of a Provision Discovery
    868 	 * Response frame for a pending request scheduled with
    869 	 * p2p_prov_disc_req(). This callback handler can be set to %NULL if
    870 	 * provision discovery is not used.
    871 	 */
    872 	void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods);
    873 
    874 	/**
    875 	 * prov_disc_fail - Callback on Provision Discovery failure
    876 	 * @ctx: Callback context from cb_ctx
    877 	 * @peer: Source address of the response
    878 	 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS
    879 	 * @adv_id: If non-zero, then the adv_id of the PD Request
    880 	 * @adv_mac: P2P Device Address of the advertizer
    881 	 * @deferred_session_resp: Deferred session response sent by advertizer
    882 	 *
    883 	 * This callback is used to indicate either a failure or no response
    884 	 * to an earlier provision discovery request.
    885 	 *
    886 	 * This callback handler can be set to %NULL if provision discovery
    887 	 * is not used or failures do not need to be indicated.
    888 	 */
    889 	void (*prov_disc_fail)(void *ctx, const u8 *peer,
    890 			       enum p2p_prov_disc_status status,
    891 			       u32 adv_id, const u8 *adv_mac,
    892 			       const char *deferred_session_resp);
    893 
    894 	/**
    895 	 * invitation_process - Optional callback for processing Invitations
    896 	 * @ctx: Callback context from cb_ctx
    897 	 * @sa: Source address of the Invitation Request
    898 	 * @bssid: P2P Group BSSID from the request or %NULL if not included
    899 	 * @go_dev_addr: GO Device Address from P2P Group ID
    900 	 * @ssid: SSID from P2P Group ID
    901 	 * @ssid_len: Length of ssid buffer in octets
    902 	 * @go: Variable for returning whether the local end is GO in the group
    903 	 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO)
    904 	 * @force_freq: Variable for returning forced frequency for the group
    905 	 * @persistent_group: Whether this is an invitation to reinvoke a
    906 	 *	persistent group (instead of invitation to join an active
    907 	 *	group)
    908 	 * @channels: Available operating channels for the group
    909 	 * @dev_pw_id: Device Password ID for NFC static handover or -1 if not
    910 	 *	used
    911 	 * Returns: Status code (P2P_SC_*)
    912 	 *
    913 	 * This optional callback can be used to implement persistent reconnect
    914 	 * by allowing automatic restarting of persistent groups without user
    915 	 * interaction. If this callback is not implemented (i.e., is %NULL),
    916 	 * the received Invitation Request frames are replied with
    917 	 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the
    918 	 * invitation_result() callback.
    919 	 *
    920 	 * If the requested parameters are acceptable and the group is known,
    921 	 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown,
    922 	 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED
    923 	 * can be returned if there is not enough data to provide immediate
    924 	 * response, i.e., if some sort of user interaction is needed. The
    925 	 * invitation_received() callback will be called in that case
    926 	 * immediately after this call.
    927 	 */
    928 	u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid,
    929 				 const u8 *go_dev_addr, const u8 *ssid,
    930 				 size_t ssid_len, int *go, u8 *group_bssid,
    931 				 int *force_freq, int persistent_group,
    932 				 const struct p2p_channels *channels,
    933 				 int dev_pw_id);
    934 
    935 	/**
    936 	 * invitation_received - Callback on Invitation Request RX
    937 	 * @ctx: Callback context from cb_ctx
    938 	 * @sa: Source address of the Invitation Request
    939 	 * @bssid: P2P Group BSSID or %NULL if not received
    940 	 * @ssid: SSID of the group
    941 	 * @ssid_len: Length of ssid in octets
    942 	 * @go_dev_addr: GO Device Address
    943 	 * @status: Response Status
    944 	 * @op_freq: Operational frequency for the group
    945 	 *
    946 	 * This callback is used to indicate sending of an Invitation Response
    947 	 * for a received Invitation Request. If status == 0 (success), the
    948 	 * upper layer code is responsible for starting the group. status == 1
    949 	 * indicates need to get user authorization for the group. Other status
    950 	 * values indicate that the invitation request was rejected.
    951 	 */
    952 	void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid,
    953 				    const u8 *ssid, size_t ssid_len,
    954 				    const u8 *go_dev_addr, u8 status,
    955 				    int op_freq);
    956 
    957 	/**
    958 	 * invitation_result - Callback on Invitation result
    959 	 * @ctx: Callback context from cb_ctx
    960 	 * @status: Negotiation result (Status Code)
    961 	 * @bssid: P2P Group BSSID or %NULL if not received
    962 	 * @channels: Available operating channels for the group
    963 	 * @addr: Peer address
    964 	 * @freq: Frequency (in MHz) indicated during invitation or 0
    965 	 * @peer_oper_freq: Operating frequency (in MHz) advertized by the peer
    966 	 * during invitation or 0
    967 	 *
    968 	 * This callback is used to indicate result of an Invitation procedure
    969 	 * started with a call to p2p_invite(). The indicated status code is
    970 	 * the value received from the peer in Invitation Response with 0
    971 	 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a
    972 	 * local failure in transmitting the Invitation Request.
    973 	 */
    974 	void (*invitation_result)(void *ctx, int status, const u8 *bssid,
    975 				  const struct p2p_channels *channels,
    976 				  const u8 *addr, int freq, int peer_oper_freq);
    977 
    978 	/**
    979 	 * go_connected - Check whether we are connected to a GO
    980 	 * @ctx: Callback context from cb_ctx
    981 	 * @dev_addr: P2P Device Address of a GO
    982 	 * Returns: 1 if we are connected as a P2P client to the specified GO
    983 	 * or 0 if not.
    984 	 */
    985 	int (*go_connected)(void *ctx, const u8 *dev_addr);
    986 
    987 	/**
    988 	 * presence_resp - Callback on Presence Response
    989 	 * @ctx: Callback context from cb_ctx
    990 	 * @src: Source address (GO's P2P Interface Address)
    991 	 * @status: Result of the request (P2P_SC_*)
    992 	 * @noa: Returned NoA value
    993 	 * @noa_len: Length of the NoA buffer in octets
    994 	 */
    995 	void (*presence_resp)(void *ctx, const u8 *src, u8 status,
    996 			      const u8 *noa, size_t noa_len);
    997 
    998 	/**
    999 	 * is_concurrent_session_active - Check whether concurrent session is
   1000 	 * active on other virtual interfaces
   1001 	 * @ctx: Callback context from cb_ctx
   1002 	 * Returns: 1 if concurrent session is active on other virtual interface
   1003 	 * or 0 if not.
   1004 	 */
   1005 	int (*is_concurrent_session_active)(void *ctx);
   1006 
   1007 	/**
   1008 	 * is_p2p_in_progress - Check whether P2P operation is in progress
   1009 	 * @ctx: Callback context from cb_ctx
   1010 	 * Returns: 1 if P2P operation (e.g., group formation) is in progress
   1011 	 * or 0 if not.
   1012 	 */
   1013 	int (*is_p2p_in_progress)(void *ctx);
   1014 
   1015 	/**
   1016 	 * Determine if we have a persistent group we share with remote peer
   1017 	 * and allocate interface for this group if needed
   1018 	 * @ctx: Callback context from cb_ctx
   1019 	 * @addr: Peer device address to search for
   1020 	 * @ssid: Persistent group SSID or %NULL if any
   1021 	 * @ssid_len: Length of @ssid
   1022 	 * @go_dev_addr: Buffer for returning GO P2P Device Address
   1023 	 * @ret_ssid: Buffer for returning group SSID
   1024 	 * @ret_ssid_len: Buffer for returning length of @ssid
   1025 	 * @intended_iface_addr: Buffer for returning intended iface address
   1026 	 * Returns: 1 if a matching persistent group was found, 0 otherwise
   1027 	 */
   1028 	int (*get_persistent_group)(void *ctx, const u8 *addr, const u8 *ssid,
   1029 				    size_t ssid_len, u8 *go_dev_addr,
   1030 				    u8 *ret_ssid, size_t *ret_ssid_len,
   1031 				    u8 *intended_iface_addr);
   1032 
   1033 	/**
   1034 	 * Get information about a possible local GO role
   1035 	 * @ctx: Callback context from cb_ctx
   1036 	 * @intended_addr: Buffer for returning intended GO interface address
   1037 	 * @ssid: Buffer for returning group SSID
   1038 	 * @ssid_len: Buffer for returning length of @ssid
   1039 	 * @group_iface: Buffer for returning whether a separate group interface
   1040 	 *	would be used
   1041 	 * @freq: Variable for returning the current operating frequency of a
   1042 	 *	currently running P2P GO.
   1043 	 * Returns: 1 if GO info found, 0 otherwise
   1044 	 *
   1045 	 * This is used to compose New Group settings (SSID, and intended
   1046 	 * address) during P2PS provisioning if results of provisioning *might*
   1047 	 * result in our being an autonomous GO.
   1048 	 */
   1049 	int (*get_go_info)(void *ctx, u8 *intended_addr,
   1050 			   u8 *ssid, size_t *ssid_len, int *group_iface,
   1051 			   unsigned int *freq);
   1052 
   1053 	/**
   1054 	 * remove_stale_groups - Remove stale P2PS groups
   1055 	 *
   1056 	 * Because P2PS stages *potential* GOs, and remote devices can remove
   1057 	 * credentials unilaterally, we need to make sure we don't let stale
   1058 	 * unusable groups build up.
   1059 	 */
   1060 	int (*remove_stale_groups)(void *ctx, const u8 *peer, const u8 *go,
   1061 				   const u8 *ssid, size_t ssid_len);
   1062 
   1063 	/**
   1064 	 * p2ps_prov_complete - P2PS provisioning complete
   1065 	 *
   1066 	 * When P2PS provisioning completes (successfully or not) we must
   1067 	 * transmit all of the results to the upper layers.
   1068 	 */
   1069 	void (*p2ps_prov_complete)(void *ctx, u8 status, const u8 *dev,
   1070 				   const u8 *adv_mac, const u8 *ses_mac,
   1071 				   const u8 *grp_mac, u32 adv_id, u32 ses_id,
   1072 				   u8 conncap, int passwd_id,
   1073 				   const u8 *persist_ssid,
   1074 				   size_t persist_ssid_size, int response_done,
   1075 				   int prov_start, const char *session_info,
   1076 				   const u8 *feat_cap, size_t feat_cap_len,
   1077 				   unsigned int freq, const u8 *group_ssid,
   1078 				   size_t group_ssid_len);
   1079 
   1080 	/**
   1081 	 * prov_disc_resp_cb - Callback for indicating completion of PD Response
   1082 	 * @ctx: Callback context from cb_ctx
   1083 	 * Returns: 1 if operation was started, 0 otherwise
   1084 	 *
   1085 	 * This callback can be used to perform any pending actions after
   1086 	 * provisioning. It is mainly used for P2PS pending group creation.
   1087 	 */
   1088 	int (*prov_disc_resp_cb)(void *ctx);
   1089 
   1090 	/**
   1091 	 * p2ps_group_capability - Determine group capability
   1092 	 * @ctx: Callback context from cb_ctx
   1093 	 * @incoming: Peer requested roles, expressed with P2PS_SETUP_* bitmap.
   1094 	 * @role: Local roles, expressed with P2PS_SETUP_* bitmap.
   1095 	 * @force_freq: Variable for returning forced frequency for the group.
   1096 	 * @pref_freq: Variable for returning preferred frequency for the group.
   1097 	 * Returns: P2PS_SETUP_* bitmap of group capability result.
   1098 	 *
   1099 	 * This function can be used to determine group capability and
   1100 	 * frequencies based on information from P2PS PD exchange and the
   1101 	 * current state of ongoing groups and driver capabilities.
   1102 	 */
   1103 	u8 (*p2ps_group_capability)(void *ctx, u8 incoming, u8 role,
   1104 				    unsigned int *force_freq,
   1105 				    unsigned int *pref_freq);
   1106 
   1107 	/**
   1108 	 * get_pref_freq_list - Get preferred frequency list for an interface
   1109 	 * @ctx: Callback context from cb_ctx
   1110 	 * @go: Whether the use if for GO role
   1111 	 * @len: Length of freq_list in entries (both IN and OUT)
   1112 	 * @freq_list: Buffer for returning the preferred frequencies (MHz)
   1113 	 * Returns: 0 on success, -1 on failure
   1114 	 *
   1115 	 * This function can be used to query the preferred frequency list from
   1116 	 * the driver specific to a particular interface type.
   1117 	 */
   1118 	int (*get_pref_freq_list)(void *ctx, int go,
   1119 				  unsigned int *len, unsigned int *freq_list);
   1120 };
   1121 
   1122 
   1123 /* P2P module initialization/deinitialization */
   1124 
   1125 /**
   1126  * p2p_init - Initialize P2P module
   1127  * @cfg: P2P module configuration
   1128  * Returns: Pointer to private data or %NULL on failure
   1129  *
   1130  * This function is used to initialize global P2P module context (one per
   1131  * device). The P2P module will keep a copy of the configuration data, so the
   1132  * caller does not need to maintain this structure. However, the callback
   1133  * functions and the context parameters to them must be kept available until
   1134  * the P2P module is deinitialized with p2p_deinit().
   1135  */
   1136 struct p2p_data * p2p_init(const struct p2p_config *cfg);
   1137 
   1138 /**
   1139  * p2p_deinit - Deinitialize P2P module
   1140  * @p2p: P2P module context from p2p_init()
   1141  */
   1142 void p2p_deinit(struct p2p_data *p2p);
   1143 
   1144 /**
   1145  * p2p_flush - Flush P2P module state
   1146  * @p2p: P2P module context from p2p_init()
   1147  *
   1148  * This command removes the P2P module state like peer device entries.
   1149  */
   1150 void p2p_flush(struct p2p_data *p2p);
   1151 
   1152 /**
   1153  * p2p_unauthorize - Unauthorize the specified peer device
   1154  * @p2p: P2P module context from p2p_init()
   1155  * @addr: P2P peer entry to be unauthorized
   1156  * Returns: 0 on success, -1 on failure
   1157  *
   1158  * This command removes any connection authorization from the specified P2P
   1159  * peer device address. This can be used, e.g., to cancel effect of a previous
   1160  * p2p_authorize() or p2p_connect() call that has not yet resulted in completed
   1161  * GO Negotiation.
   1162  */
   1163 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr);
   1164 
   1165 /**
   1166  * p2p_set_dev_name - Set device name
   1167  * @p2p: P2P module context from p2p_init()
   1168  * Returns: 0 on success, -1 on failure
   1169  *
   1170  * This function can be used to update the P2P module configuration with
   1171  * information that was not available at the time of the p2p_init() call.
   1172  */
   1173 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name);
   1174 
   1175 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer);
   1176 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name);
   1177 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number);
   1178 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number);
   1179 
   1180 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods);
   1181 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid);
   1182 
   1183 /**
   1184  * p2p_set_pri_dev_type - Set primary device type
   1185  * @p2p: P2P module context from p2p_init()
   1186  * Returns: 0 on success, -1 on failure
   1187  *
   1188  * This function can be used to update the P2P module configuration with
   1189  * information that was not available at the time of the p2p_init() call.
   1190  */
   1191 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type);
   1192 
   1193 /**
   1194  * p2p_set_sec_dev_types - Set secondary device types
   1195  * @p2p: P2P module context from p2p_init()
   1196  * Returns: 0 on success, -1 on failure
   1197  *
   1198  * This function can be used to update the P2P module configuration with
   1199  * information that was not available at the time of the p2p_init() call.
   1200  */
   1201 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
   1202 			  size_t num_dev_types);
   1203 
   1204 int p2p_set_country(struct p2p_data *p2p, const char *country);
   1205 
   1206 
   1207 /* Commands from upper layer management entity */
   1208 
   1209 enum p2p_discovery_type {
   1210 	P2P_FIND_START_WITH_FULL,
   1211 	P2P_FIND_ONLY_SOCIAL,
   1212 	P2P_FIND_PROGRESSIVE
   1213 };
   1214 
   1215 /**
   1216  * p2p_find - Start P2P Find (Device Discovery)
   1217  * @p2p: P2P module context from p2p_init()
   1218  * @timeout: Timeout for find operation in seconds or 0 for no timeout
   1219  * @type: Device Discovery type
   1220  * @num_req_dev_types: Number of requested device types
   1221  * @req_dev_types: Requested device types array, must be an array
   1222  *	containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no
   1223  *	requested device types.
   1224  * @dev_id: Device ID to search for or %NULL to find all devices
   1225  * @search_delay: Extra delay in milliseconds between search iterations
   1226  * @seek_count: Number of ASP Service Strings in the seek_string array
   1227  * @seek_string: ASP Service Strings to query for in Probe Requests
   1228  * @freq: Requested first scan frequency (in MHz) to modify type ==
   1229  *	P2P_FIND_START_WITH_FULL behavior. 0 = Use normal full scan.
   1230  *	If p2p_find is already in progress, this parameter is ignored and full
   1231  *	scan will be executed.
   1232  * Returns: 0 on success, -1 on failure
   1233  */
   1234 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
   1235 	     enum p2p_discovery_type type,
   1236 	     unsigned int num_req_dev_types, const u8 *req_dev_types,
   1237 	     const u8 *dev_id, unsigned int search_delay,
   1238 	     u8 seek_count, const char **seek_string, int freq);
   1239 
   1240 /**
   1241  * p2p_notify_scan_trigger_status - Indicate scan trigger status
   1242  * @p2p: P2P module context from p2p_init()
   1243  * @status: 0 on success, -1 on failure
   1244  */
   1245 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status);
   1246 
   1247 /**
   1248  * p2p_stop_find - Stop P2P Find (Device Discovery)
   1249  * @p2p: P2P module context from p2p_init()
   1250  */
   1251 void p2p_stop_find(struct p2p_data *p2p);
   1252 
   1253 /**
   1254  * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq
   1255  * @p2p: P2P module context from p2p_init()
   1256  * @freq: Frequency in MHz for next operation
   1257  *
   1258  * This is like p2p_stop_find(), but Listen state is not stopped if we are
   1259  * already on the same frequency.
   1260  */
   1261 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq);
   1262 
   1263 /**
   1264  * p2p_listen - Start P2P Listen state for specified duration
   1265  * @p2p: P2P module context from p2p_init()
   1266  * @timeout: Listen state duration in milliseconds
   1267  * Returns: 0 on success, -1 on failure
   1268  *
   1269  * This function can be used to request the P2P module to keep the device
   1270  * discoverable on the listen channel for an extended set of time. At least in
   1271  * its current form, this is mainly used for testing purposes and may not be of
   1272  * much use for normal P2P operations.
   1273  */
   1274 int p2p_listen(struct p2p_data *p2p, unsigned int timeout);
   1275 
   1276 /**
   1277  * p2p_stop_listen - Stop P2P Listen
   1278  * @p2p: P2P module context from p2p_init()
   1279  */
   1280 void p2p_stop_listen(struct p2p_data *p2p);
   1281 
   1282 /**
   1283  * p2p_connect - Start P2P group formation (GO negotiation)
   1284  * @p2p: P2P module context from p2p_init()
   1285  * @peer_addr: MAC address of the peer P2P client
   1286  * @wps_method: WPS method to be used in provisioning
   1287  * @go_intent: Local GO intent value (1..15)
   1288  * @own_interface_addr: Intended interface address to use with the group
   1289  * @force_freq: The only allowed channel frequency in MHz or 0
   1290  * @persistent_group: Whether to create a persistent group (0 = no, 1 =
   1291  * persistent group without persistent reconnect, 2 = persistent group with
   1292  * persistent reconnect)
   1293  * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
   1294  *	a new SSID
   1295  * @force_ssid_len: Length of $force_ssid buffer
   1296  * @pd_before_go_neg: Whether to send Provision Discovery prior to GO
   1297  *	Negotiation as an interoperability workaround when initiating group
   1298  *	formation
   1299  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
   1300  *	force_freq == 0)
   1301  * Returns: 0 on success, -1 on failure
   1302  */
   1303 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
   1304 		enum p2p_wps_method wps_method,
   1305 		int go_intent, const u8 *own_interface_addr,
   1306 		unsigned int force_freq, int persistent_group,
   1307 		const u8 *force_ssid, size_t force_ssid_len,
   1308 		int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id);
   1309 
   1310 /**
   1311  * p2p_authorize - Authorize P2P group formation (GO negotiation)
   1312  * @p2p: P2P module context from p2p_init()
   1313  * @peer_addr: MAC address of the peer P2P client
   1314  * @wps_method: WPS method to be used in provisioning
   1315  * @go_intent: Local GO intent value (1..15)
   1316  * @own_interface_addr: Intended interface address to use with the group
   1317  * @force_freq: The only allowed channel frequency in MHz or 0
   1318  * @persistent_group: Whether to create a persistent group (0 = no, 1 =
   1319  * persistent group without persistent reconnect, 2 = persistent group with
   1320  * persistent reconnect)
   1321  * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
   1322  *	a new SSID
   1323  * @force_ssid_len: Length of $force_ssid buffer
   1324  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
   1325  *	force_freq == 0)
   1326  * Returns: 0 on success, -1 on failure
   1327  *
   1328  * This is like p2p_connect(), but the actual group negotiation is not
   1329  * initiated automatically, i.e., the other end is expected to do that.
   1330  */
   1331 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
   1332 		  enum p2p_wps_method wps_method,
   1333 		  int go_intent, const u8 *own_interface_addr,
   1334 		  unsigned int force_freq, int persistent_group,
   1335 		  const u8 *force_ssid, size_t force_ssid_len,
   1336 		  unsigned int pref_freq, u16 oob_pw_id);
   1337 
   1338 /**
   1339  * p2p_reject - Reject peer device (explicitly block connection attempts)
   1340  * @p2p: P2P module context from p2p_init()
   1341  * @peer_addr: MAC address of the peer P2P client
   1342  * Returns: 0 on success, -1 on failure
   1343  */
   1344 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr);
   1345 
   1346 /**
   1347  * p2p_prov_disc_req - Send Provision Discovery Request
   1348  * @p2p: P2P module context from p2p_init()
   1349  * @peer_addr: MAC address of the peer P2P client
   1350  * @p2ps_prov: Provisioning info for P2PS
   1351  * @config_methods: WPS Config Methods value (only one bit set)
   1352  * @join: Whether this is used by a client joining an active group
   1353  * @force_freq: Forced TX frequency for the frame (mainly for the join case)
   1354  * @user_initiated_pd: Flag to indicate if initiated by user or not
   1355  * Returns: 0 on success, -1 on failure
   1356  *
   1357  * This function can be used to request a discovered P2P peer to display a PIN
   1358  * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us
   1359  * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame
   1360  * is transmitted once immediately and if no response is received, the frame
   1361  * will be sent again whenever the target device is discovered during device
   1362  * dsicovery (start with a p2p_find() call). Response from the peer is
   1363  * indicated with the p2p_config::prov_disc_resp() callback.
   1364  */
   1365 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr,
   1366 		      struct p2ps_provision *p2ps_prov, u16 config_methods,
   1367 		      int join, int force_freq,
   1368 		      int user_initiated_pd);
   1369 
   1370 /**
   1371  * p2p_sd_request - Schedule a service discovery query
   1372  * @p2p: P2P module context from p2p_init()
   1373  * @dst: Destination peer or %NULL to apply for all peers
   1374  * @tlvs: P2P Service Query TLV(s)
   1375  * Returns: Reference to the query or %NULL on failure
   1376  *
   1377  * Response to the query is indicated with the p2p_config::sd_response()
   1378  * callback.
   1379  */
   1380 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst,
   1381 		      const struct wpabuf *tlvs);
   1382 
   1383 #ifdef CONFIG_WIFI_DISPLAY
   1384 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst,
   1385 			  const struct wpabuf *tlvs);
   1386 #endif /* CONFIG_WIFI_DISPLAY */
   1387 
   1388 /**
   1389  * p2p_sd_cancel_request - Cancel a pending service discovery query
   1390  * @p2p: P2P module context from p2p_init()
   1391  * @req: Query reference from p2p_sd_request()
   1392  * Returns: 0 if request for cancelled; -1 if not found
   1393  */
   1394 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req);
   1395 
   1396 /**
   1397  * p2p_sd_response - Send response to a service discovery query
   1398  * @p2p: P2P module context from p2p_init()
   1399  * @freq: Frequency from p2p_config::sd_request() callback
   1400  * @dst: Destination address from p2p_config::sd_request() callback
   1401  * @dialog_token: Dialog token from p2p_config::sd_request() callback
   1402  * @resp_tlvs: P2P Service Response TLV(s)
   1403  *
   1404  * This function is called as a response to the request indicated with
   1405  * p2p_config::sd_request() callback.
   1406  */
   1407 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
   1408 		     u8 dialog_token, const struct wpabuf *resp_tlvs);
   1409 
   1410 /**
   1411  * p2p_sd_service_update - Indicate a change in local services
   1412  * @p2p: P2P module context from p2p_init()
   1413  *
   1414  * This function needs to be called whenever there is a change in availability
   1415  * of the local services. This will increment the Service Update Indicator
   1416  * value which will be used in SD Request and Response frames.
   1417  */
   1418 void p2p_sd_service_update(struct p2p_data *p2p);
   1419 
   1420 
   1421 enum p2p_invite_role {
   1422 	P2P_INVITE_ROLE_GO,
   1423 	P2P_INVITE_ROLE_ACTIVE_GO,
   1424 	P2P_INVITE_ROLE_CLIENT
   1425 };
   1426 
   1427 /**
   1428  * p2p_invite - Invite a P2P Device into a group
   1429  * @p2p: P2P module context from p2p_init()
   1430  * @peer: Device Address of the peer P2P Device
   1431  * @role: Local role in the group
   1432  * @bssid: Group BSSID or %NULL if not known
   1433  * @ssid: Group SSID
   1434  * @ssid_len: Length of ssid in octets
   1435  * @force_freq: The only allowed channel frequency in MHz or 0
   1436  * @go_dev_addr: Forced GO Device Address or %NULL if none
   1437  * @persistent_group: Whether this is to reinvoke a persistent group
   1438  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
   1439  *	force_freq == 0)
   1440  * @dev_pw_id: Device Password ID from OOB Device Password (NFC) static handover
   1441  *	case or -1 if not used
   1442  * Returns: 0 on success, -1 on failure
   1443  */
   1444 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role,
   1445 	       const u8 *bssid, const u8 *ssid, size_t ssid_len,
   1446 	       unsigned int force_freq, const u8 *go_dev_addr,
   1447 	       int persistent_group, unsigned int pref_freq, int dev_pw_id);
   1448 
   1449 /**
   1450  * p2p_presence_req - Request GO presence
   1451  * @p2p: P2P module context from p2p_init()
   1452  * @go_interface_addr: GO P2P Interface Address
   1453  * @own_interface_addr: Own P2P Interface Address for this group
   1454  * @freq: Group operating frequence (in MHz)
   1455  * @duration1: Preferred presence duration in microseconds
   1456  * @interval1: Preferred presence interval in microseconds
   1457  * @duration2: Acceptable presence duration in microseconds
   1458  * @interval2: Acceptable presence interval in microseconds
   1459  * Returns: 0 on success, -1 on failure
   1460  *
   1461  * If both duration and interval values are zero, the parameter pair is not
   1462  * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0).
   1463  */
   1464 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
   1465 		     const u8 *own_interface_addr, unsigned int freq,
   1466 		     u32 duration1, u32 interval1, u32 duration2,
   1467 		     u32 interval2);
   1468 
   1469 /**
   1470  * p2p_ext_listen - Set Extended Listen Timing
   1471  * @p2p: P2P module context from p2p_init()
   1472  * @freq: Group operating frequence (in MHz)
   1473  * @period: Availability period in milliseconds (1-65535; 0 to disable)
   1474  * @interval: Availability interval in milliseconds (1-65535; 0 to disable)
   1475  * Returns: 0 on success, -1 on failure
   1476  *
   1477  * This function can be used to enable or disable (period = interval = 0)
   1478  * Extended Listen Timing. When enabled, the P2P Device will become
   1479  * discoverable (go into Listen State) every @interval milliseconds for at
   1480  * least @period milliseconds.
   1481  */
   1482 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
   1483 		   unsigned int interval);
   1484 
   1485 /* Event notifications from upper layer management operations */
   1486 
   1487 /**
   1488  * p2p_wps_success_cb - Report successfully completed WPS provisioning
   1489  * @p2p: P2P module context from p2p_init()
   1490  * @mac_addr: Peer address
   1491  *
   1492  * This function is used to report successfully completed WPS provisioning
   1493  * during group formation in both GO/Registrar and client/Enrollee roles.
   1494  */
   1495 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr);
   1496 
   1497 /**
   1498  * p2p_group_formation_failed - Report failed WPS provisioning
   1499  * @p2p: P2P module context from p2p_init()
   1500  *
   1501  * This function is used to report failed group formation. This can happen
   1502  * either due to failed WPS provisioning or due to 15 second timeout during
   1503  * the provisioning phase.
   1504  */
   1505 void p2p_group_formation_failed(struct p2p_data *p2p);
   1506 
   1507 /**
   1508  * p2p_get_provisioning_info - Get any stored provisioning info
   1509  * @p2p: P2P module context from p2p_init()
   1510  * @addr: Peer P2P Device Address
   1511  * Returns: WPS provisioning information (WPS config method) or 0 if no
   1512  * information is available
   1513  *
   1514  * This function is used to retrieve stored WPS provisioning info for the given
   1515  * peer.
   1516  */
   1517 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr);
   1518 
   1519 /**
   1520  * p2p_clear_provisioning_info - Clear any stored provisioning info
   1521  * @p2p: P2P module context from p2p_init()
   1522  * @iface_addr: Peer P2P Device Address
   1523  *
   1524  * This function is used to clear stored WPS provisioning info for the given
   1525  * peer.
   1526  */
   1527 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr);
   1528 
   1529 
   1530 /* Event notifications from lower layer driver operations */
   1531 
   1532 /**
   1533  * enum p2p_probe_req_status
   1534  *
   1535  * @P2P_PREQ_MALFORMED: frame was not well-formed
   1536  * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored
   1537  * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request
   1538  * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed
   1539  * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P
   1540  */
   1541 enum p2p_probe_req_status {
   1542 	P2P_PREQ_MALFORMED,
   1543 	P2P_PREQ_NOT_LISTEN,
   1544 	P2P_PREQ_NOT_P2P,
   1545 	P2P_PREQ_NOT_PROCESSED,
   1546 	P2P_PREQ_PROCESSED
   1547 };
   1548 
   1549 /**
   1550  * p2p_probe_req_rx - Report reception of a Probe Request frame
   1551  * @p2p: P2P module context from p2p_init()
   1552  * @addr: Source MAC address
   1553  * @dst: Destination MAC address if available or %NULL
   1554  * @bssid: BSSID if available or %NULL
   1555  * @ie: Information elements from the Probe Request frame body
   1556  * @ie_len: Length of ie buffer in octets
   1557  * @rx_freq: Probe Request frame RX frequency
   1558  * Returns: value indicating the type and status of the probe request
   1559  */
   1560 enum p2p_probe_req_status
   1561 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
   1562 		 const u8 *bssid, const u8 *ie, size_t ie_len,
   1563 		 unsigned int rx_freq);
   1564 
   1565 /**
   1566  * p2p_rx_action - Report received Action frame
   1567  * @p2p: P2P module context from p2p_init()
   1568  * @da: Destination address of the received Action frame
   1569  * @sa: Source address of the received Action frame
   1570  * @bssid: Address 3 of the received Action frame
   1571  * @category: Category of the received Action frame
   1572  * @data: Action frame body after the Category field
   1573  * @len: Length of the data buffer in octets
   1574  * @freq: Frequency (in MHz) on which the frame was received
   1575  */
   1576 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
   1577 		   const u8 *bssid, u8 category,
   1578 		   const u8 *data, size_t len, int freq);
   1579 
   1580 /**
   1581  * p2p_scan_res_handler - Indicate a P2P scan results
   1582  * @p2p: P2P module context from p2p_init()
   1583  * @bssid: BSSID of the scan result
   1584  * @freq: Frequency of the channel on which the device was found in MHz
   1585  * @rx_time: Time when the result was received
   1586  * @level: Signal level (signal strength of the received Beacon/Probe Response
   1587  *	frame)
   1588  * @ies: Pointer to IEs from the scan result
   1589  * @ies_len: Length of the ies buffer
   1590  * Returns: 0 to continue or 1 to stop scan result indication
   1591  *
   1592  * This function is called to indicate a scan result entry with P2P IE from a
   1593  * scan requested with struct p2p_config::p2p_scan(). This can be called during
   1594  * the actual scan process (i.e., whenever a new device is found) or as a
   1595  * sequence of calls after the full scan has been completed. The former option
   1596  * can result in optimized operations, but may not be supported by all
   1597  * driver/firmware designs. The ies buffer need to include at least the P2P IE,
   1598  * but it is recommended to include all IEs received from the device. The
   1599  * caller does not need to check that the IEs contain a P2P IE before calling
   1600  * this function since frames will be filtered internally if needed.
   1601  *
   1602  * This function will return 1 if it wants to stop scan result iteration (and
   1603  * scan in general if it is still in progress). This is used to allow faster
   1604  * start of a pending operation, e.g., to start a pending GO negotiation.
   1605  */
   1606 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
   1607 			 struct os_reltime *rx_time, int level, const u8 *ies,
   1608 			 size_t ies_len);
   1609 
   1610 /**
   1611  * p2p_scan_res_handled - Indicate end of scan results
   1612  * @p2p: P2P module context from p2p_init()
   1613  *
   1614  * This function is called to indicate that all P2P scan results from a scan
   1615  * have been reported with zero or more calls to p2p_scan_res_handler(). This
   1616  * function must be called as a response to successful
   1617  * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler()
   1618  * calls stopped iteration.
   1619  */
   1620 void p2p_scan_res_handled(struct p2p_data *p2p);
   1621 
   1622 enum p2p_send_action_result {
   1623 	P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
   1624 	P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */,
   1625 	P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
   1626 };
   1627 
   1628 /**
   1629  * p2p_send_action_cb - Notify TX status of an Action frame
   1630  * @p2p: P2P module context from p2p_init()
   1631  * @freq: Channel frequency in MHz
   1632  * @dst: Destination MAC address (Address 1)
   1633  * @src: Source MAC address (Address 2)
   1634  * @bssid: BSSID (Address 3)
   1635  * @result: Result of the transmission attempt
   1636  *
   1637  * This function is used to indicate the result of an Action frame transmission
   1638  * that was requested with struct p2p_config::send_action() callback.
   1639  */
   1640 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
   1641 			const u8 *src, const u8 *bssid,
   1642 			enum p2p_send_action_result result);
   1643 
   1644 /**
   1645  * p2p_listen_cb - Indicate the start of a requested Listen state
   1646  * @p2p: P2P module context from p2p_init()
   1647  * @freq: Listen channel frequency in MHz
   1648  * @duration: Duration for the Listen state in milliseconds
   1649  *
   1650  * This function is used to indicate that a Listen state requested with
   1651  * struct p2p_config::start_listen() callback has started.
   1652  */
   1653 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
   1654 		   unsigned int duration);
   1655 
   1656 /**
   1657  * p2p_listen_end - Indicate the end of a requested Listen state
   1658  * @p2p: P2P module context from p2p_init()
   1659  * @freq: Listen channel frequency in MHz
   1660  * Returns: 0 if no operations were started, 1 if an operation was started
   1661  *
   1662  * This function is used to indicate that a Listen state requested with
   1663  * struct p2p_config::start_listen() callback has ended.
   1664  */
   1665 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq);
   1666 
   1667 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
   1668 		      const u8 *ie, size_t ie_len);
   1669 
   1670 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
   1671 			const u8 *ie, size_t ie_len);
   1672 
   1673 
   1674 /* Per-group P2P state for GO */
   1675 
   1676 struct p2p_group;
   1677 
   1678 /**
   1679  * struct p2p_group_config - P2P group configuration
   1680  *
   1681  * This configuration is provided to the P2P module during initialization of
   1682  * the per-group information with p2p_group_init().
   1683  */
   1684 struct p2p_group_config {
   1685 	/**
   1686 	 * persistent_group - Whether the group is persistent
   1687 	 * 0 = not a persistent group
   1688 	 * 1 = persistent group without persistent reconnect
   1689 	 * 2 = persistent group with persistent reconnect
   1690 	 */
   1691 	int persistent_group;
   1692 
   1693 	/**
   1694 	 * interface_addr - P2P Interface Address of the group
   1695 	 */
   1696 	u8 interface_addr[ETH_ALEN];
   1697 
   1698 	/**
   1699 	 * max_clients - Maximum number of clients in the group
   1700 	 */
   1701 	unsigned int max_clients;
   1702 
   1703 	/**
   1704 	 * ssid - Group SSID
   1705 	 */
   1706 	u8 ssid[SSID_MAX_LEN];
   1707 
   1708 	/**
   1709 	 * ssid_len - Length of SSID
   1710 	 */
   1711 	size_t ssid_len;
   1712 
   1713 	/**
   1714 	 * freq - Operating channel of the group
   1715 	 */
   1716 	int freq;
   1717 
   1718 	/**
   1719 	 * ip_addr_alloc - Whether IP address allocation within 4-way handshake
   1720 	 *	is supported
   1721 	 */
   1722 	int ip_addr_alloc;
   1723 
   1724 	/**
   1725 	 * cb_ctx - Context to use with callback functions
   1726 	 */
   1727 	void *cb_ctx;
   1728 
   1729 	/**
   1730 	 * ie_update - Notification of IE update
   1731 	 * @ctx: Callback context from cb_ctx
   1732 	 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change
   1733 	 * @proberesp_ies: P2P Ie for Probe Response frames
   1734 	 *
   1735 	 * P2P module uses this callback function to notify whenever the P2P IE
   1736 	 * in Beacon or Probe Response frames should be updated based on group
   1737 	 * events.
   1738 	 *
   1739 	 * The callee is responsible for freeing the returned buffer(s) with
   1740 	 * wpabuf_free().
   1741 	 */
   1742 	void (*ie_update)(void *ctx, struct wpabuf *beacon_ies,
   1743 			  struct wpabuf *proberesp_ies);
   1744 
   1745 	/**
   1746 	 * idle_update - Notification of changes in group idle state
   1747 	 * @ctx: Callback context from cb_ctx
   1748 	 * @idle: Whether the group is idle (no associated stations)
   1749 	 */
   1750 	void (*idle_update)(void *ctx, int idle);
   1751 };
   1752 
   1753 /**
   1754  * p2p_group_init - Initialize P2P group
   1755  * @p2p: P2P module context from p2p_init()
   1756  * @config: P2P group configuration (will be freed by p2p_group_deinit())
   1757  * Returns: Pointer to private data or %NULL on failure
   1758  *
   1759  * This function is used to initialize per-group P2P module context. Currently,
   1760  * this is only used to manage GO functionality and P2P clients do not need to
   1761  * create an instance of this per-group information.
   1762  */
   1763 struct p2p_group * p2p_group_init(struct p2p_data *p2p,
   1764 				  struct p2p_group_config *config);
   1765 
   1766 /**
   1767  * p2p_group_deinit - Deinitialize P2P group
   1768  * @group: P2P group context from p2p_group_init()
   1769  */
   1770 void p2p_group_deinit(struct p2p_group *group);
   1771 
   1772 /**
   1773  * p2p_group_notif_assoc - Notification of P2P client association with GO
   1774  * @group: P2P group context from p2p_group_init()
   1775  * @addr: Interface address of the P2P client
   1776  * @ie: IEs from the (Re)association Request frame
   1777  * @len: Length of the ie buffer in octets
   1778  * Returns: 0 on success, -1 on failure
   1779  */
   1780 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
   1781 			  const u8 *ie, size_t len);
   1782 
   1783 /**
   1784  * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response
   1785  * @group: P2P group context from p2p_group_init()
   1786  * @status: Status value (P2P_SC_SUCCESS if association succeeded)
   1787  * Returns: P2P IE for (Re)association Response or %NULL on failure
   1788  *
   1789  * The caller is responsible for freeing the returned buffer with
   1790  * wpabuf_free().
   1791  */
   1792 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status);
   1793 
   1794 /**
   1795  * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO
   1796  * @group: P2P group context from p2p_group_init()
   1797  * @addr: Interface address of the P2P client
   1798  */
   1799 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr);
   1800 
   1801 /**
   1802  * p2p_group_notif_formation_done - Notification of completed group formation
   1803  * @group: P2P group context from p2p_group_init()
   1804  */
   1805 void p2p_group_notif_formation_done(struct p2p_group *group);
   1806 
   1807 /**
   1808  * p2p_group_notif_noa - Notification of NoA change
   1809  * @group: P2P group context from p2p_group_init()
   1810  * @noa: Notice of Absence attribute payload, %NULL if none
   1811  * @noa_len: Length of noa buffer in octets
   1812  * Returns: 0 on success, -1 on failure
   1813  *
   1814  * Notify the P2P group management about a new NoA contents. This will be
   1815  * inserted into the P2P IEs in Beacon and Probe Response frames with rest of
   1816  * the group information.
   1817  */
   1818 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
   1819 			size_t noa_len);
   1820 
   1821 /**
   1822  * p2p_group_match_dev_type - Match device types in group with requested type
   1823  * @group: P2P group context from p2p_group_init()
   1824  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
   1825  * Returns: 1 on match, 0 on mismatch
   1826  *
   1827  * This function can be used to match the Requested Device Type attribute in
   1828  * WPS IE with the device types of a group member for deciding whether a GO
   1829  * should reply to a Probe Request frame. Match will be reported if the WPS IE
   1830  * is not requested any specific device type.
   1831  */
   1832 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);
   1833 
   1834 /**
   1835  * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id
   1836  */
   1837 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p);
   1838 
   1839 /**
   1840  * p2p_group_go_discover - Send GO Discoverability Request to a group client
   1841  * @group: P2P group context from p2p_group_init()
   1842  * Returns: 0 on success (frame scheduled); -1 if client was not found
   1843  */
   1844 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id,
   1845 			  const u8 *searching_dev, int rx_freq);
   1846 
   1847 
   1848 /* Generic helper functions */
   1849 
   1850 /**
   1851  * p2p_ie_text - Build text format description of P2P IE
   1852  * @p2p_ie: P2P IE
   1853  * @buf: Buffer for returning text
   1854  * @end: Pointer to the end of the buf area
   1855  * Returns: Number of octets written to the buffer or -1 on failure
   1856  *
   1857  * This function can be used to parse P2P IE contents into text format
   1858  * field=value lines.
   1859  */
   1860 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end);
   1861 
   1862 /**
   1863  * p2p_scan_result_text - Build text format description of P2P IE
   1864  * @ies: Information elements from scan results
   1865  * @ies_len: ies buffer length in octets
   1866  * @buf: Buffer for returning text
   1867  * @end: Pointer to the end of the buf area
   1868  * Returns: Number of octets written to the buffer or -1 on failure
   1869  *
   1870  * This function can be used to parse P2P IE contents into text format
   1871  * field=value lines.
   1872  */
   1873 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);
   1874 
   1875 /**
   1876  * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated
   1877  * P2P IE
   1878  * @p2p_ie: P2P IE
   1879  * @dev_addr: Buffer for returning P2P Device Address
   1880  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
   1881  */
   1882 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr);
   1883 
   1884 /**
   1885  * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s)
   1886  * @ies: Information elements from scan results
   1887  * @ies_len: ies buffer length in octets
   1888  * @dev_addr: Buffer for returning P2P Device Address
   1889  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
   1890  */
   1891 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr);
   1892 
   1893 /**
   1894  * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame
   1895  * @p2p: P2P module context from p2p_init()
   1896  * @bssid: BSSID
   1897  * @buf: Buffer for writing the P2P IE
   1898  * @len: Maximum buf length in octets
   1899  * @p2p_group: Whether this is for association with a P2P GO
   1900  * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none
   1901  * Returns: Number of octets written into buf or -1 on failure
   1902  */
   1903 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
   1904 		     size_t len, int p2p_group, struct wpabuf *p2p_ie);
   1905 
   1906 /**
   1907  * p2p_scan_ie - Build P2P IE for Probe Request
   1908  * @p2p: P2P module context from p2p_init()
   1909  * @ies: Buffer for writing P2P IE
   1910  * @dev_id: Device ID to search for or %NULL for any
   1911  * @bands: Frequency bands used in the scan (enum wpa_radio_work_band bitmap)
   1912  */
   1913 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
   1914 		 unsigned int bands);
   1915 
   1916 /**
   1917  * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie
   1918  * @p2p: P2P module context from p2p_init()
   1919  * Returns: Number of octets that p2p_scan_ie() may add to the buffer
   1920  */
   1921 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p);
   1922 
   1923 /**
   1924  * p2p_go_params - Generate random P2P group parameters
   1925  * @p2p: P2P module context from p2p_init()
   1926  * @params: Buffer for parameters
   1927  * Returns: 0 on success, -1 on failure
   1928  */
   1929 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params);
   1930 
   1931 /**
   1932  * p2p_get_group_capab - Get Group Capability from P2P IE data
   1933  * @p2p_ie: P2P IE(s) contents
   1934  * Returns: Group Capability
   1935  */
   1936 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie);
   1937 
   1938 /**
   1939  * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection
   1940  * @p2p_ie: P2P IE(s) contents
   1941  * Returns: 0 if cross connection is allow, 1 if not
   1942  */
   1943 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie);
   1944 
   1945 /**
   1946  * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data
   1947  * @p2p_ie: P2P IE(s) contents
   1948  * Returns: Pointer to P2P Device Address or %NULL if not included
   1949  */
   1950 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);
   1951 
   1952 /**
   1953  * p2p_get_peer_info - Get P2P peer information
   1954  * @p2p: P2P module context from p2p_init()
   1955  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
   1956  * @next: Whether to select the peer entry following the one indicated by addr
   1957  * Returns: Pointer to peer info or %NULL if not found
   1958  */
   1959 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
   1960 					       const u8 *addr, int next);
   1961 
   1962 /**
   1963  * p2p_get_peer_info_txt - Get internal P2P peer information in text format
   1964  * @info: Pointer to P2P peer info from p2p_get_peer_info()
   1965  * @buf: Buffer for returning text
   1966  * @buflen: Maximum buffer length
   1967  * Returns: Number of octets written to the buffer or -1 on failure
   1968  *
   1969  * Note: This information is internal to the P2P module and subject to change.
   1970  * As such, this should not really be used by external programs for purposes
   1971  * other than debugging.
   1972  */
   1973 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
   1974 			  char *buf, size_t buflen);
   1975 
   1976 /**
   1977  * p2p_peer_known - Check whether P2P peer is known
   1978  * @p2p: P2P module context from p2p_init()
   1979  * @addr: P2P Device Address of the peer
   1980  * Returns: 1 if the specified device is in the P2P peer table or 0 if not
   1981  */
   1982 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr);
   1983 
   1984 /**
   1985  * p2p_set_client_discoverability - Set client discoverability capability
   1986  * @p2p: P2P module context from p2p_init()
   1987  * @enabled: Whether client discoverability will be enabled
   1988  *
   1989  * This function can be used to disable (and re-enable) client discoverability.
   1990  * This capability is enabled by default and should not be disabled in normal
   1991  * use cases, i.e., this is mainly for testing purposes.
   1992  */
   1993 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);
   1994 
   1995 /**
   1996  * p2p_set_managed_oper - Set managed P2P Device operations capability
   1997  * @p2p: P2P module context from p2p_init()
   1998  * @enabled: Whether managed P2P Device operations will be enabled
   1999  */
   2000 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled);
   2001 
   2002 /**
   2003  * p2p_config_get_random_social - Return a random social channel
   2004  * @p2p: P2P config
   2005  * @op_class: Selected operating class
   2006  * @op_channel: Selected social channel
   2007  * Returns: 0 on success, -1 on failure
   2008  *
   2009  * This function is used before p2p_init is called. A random social channel
   2010  * from supports bands 2.4 GHz (channels 1,6,11) and 60 GHz (channel 2) is
   2011  * returned on success.
   2012  */
   2013 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
   2014 				 u8 *op_channel);
   2015 
   2016 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
   2017 			   u8 forced);
   2018 
   2019 u8 p2p_get_listen_channel(struct p2p_data *p2p);
   2020 
   2021 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len);
   2022 
   2023 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
   2024 			   u8 *iface_addr);
   2025 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
   2026 			   u8 *dev_addr);
   2027 
   2028 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr);
   2029 
   2030 /**
   2031  * p2p_set_cross_connect - Set cross connection capability
   2032  * @p2p: P2P module context from p2p_init()
   2033  * @enabled: Whether cross connection will be enabled
   2034  */
   2035 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled);
   2036 
   2037 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr);
   2038 
   2039 /**
   2040  * p2p_set_intra_bss_dist - Set intra BSS distribution
   2041  * @p2p: P2P module context from p2p_init()
   2042  * @enabled: Whether intra BSS distribution will be enabled
   2043  */
   2044 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled);
   2045 
   2046 int p2p_channels_includes_freq(const struct p2p_channels *channels,
   2047 			       unsigned int freq);
   2048 
   2049 int p2p_channels_to_freqs(const struct p2p_channels *channels,
   2050 			  int *freq_list, unsigned int max_len);
   2051 
   2052 /**
   2053  * p2p_supported_freq - Check whether channel is supported for P2P
   2054  * @p2p: P2P module context from p2p_init()
   2055  * @freq: Channel frequency in MHz
   2056  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
   2057  */
   2058 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq);
   2059 
   2060 /**
   2061  * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation
   2062  * @p2p: P2P module context from p2p_init()
   2063  * @freq: Channel frequency in MHz
   2064  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
   2065  */
   2066 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq);
   2067 
   2068 /**
   2069  * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation
   2070  * @p2p: P2P module context from p2p_init()
   2071  * @freq: Channel frequency in MHz
   2072  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
   2073  */
   2074 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq);
   2075 
   2076 /**
   2077  * p2p_get_pref_freq - Get channel from preferred channel list
   2078  * @p2p: P2P module context from p2p_init()
   2079  * @channels: List of channels
   2080  * Returns: Preferred channel
   2081  */
   2082 unsigned int p2p_get_pref_freq(struct p2p_data *p2p,
   2083 			       const struct p2p_channels *channels);
   2084 
   2085 void p2p_update_channel_list(struct p2p_data *p2p,
   2086 			     const struct p2p_channels *chan,
   2087 			     const struct p2p_channels *cli_chan);
   2088 
   2089 /**
   2090  * p2p_set_best_channels - Update best channel information
   2091  * @p2p: P2P module context from p2p_init()
   2092  * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band
   2093  * @freq_5: Frequency (MHz) of best channel in 5 GHz band
   2094  * @freq_overall: Frequency (MHz) of best channel overall
   2095  */
   2096 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
   2097 			   int freq_overall);
   2098 
   2099 /**
   2100  * p2p_set_own_freq_preference - Set own preference for channel
   2101  * @p2p: P2P module context from p2p_init()
   2102  * @freq: Frequency (MHz) of the preferred channel or 0 if no preference
   2103  *
   2104  * This function can be used to set a preference on the operating channel based
   2105  * on frequencies used on the other virtual interfaces that share the same
   2106  * radio. If non-zero, this is used to try to avoid multi-channel concurrency.
   2107  */
   2108 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq);
   2109 
   2110 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p);
   2111 
   2112 /**
   2113  * p2p_get_group_num_members - Get number of members in group
   2114  * @group: P2P group context from p2p_group_init()
   2115  * Returns: Number of members in the group
   2116  */
   2117 unsigned int p2p_get_group_num_members(struct p2p_group *group);
   2118 
   2119 /**
   2120  * p2p_client_limit_reached - Check if client limit is reached
   2121  * @group: P2P group context from p2p_group_init()
   2122  * Returns: 1 if no of clients limit reached
   2123  */
   2124 int p2p_client_limit_reached(struct p2p_group *group);
   2125 
   2126 /**
   2127  * p2p_iterate_group_members - Iterate group members
   2128  * @group: P2P group context from p2p_group_init()
   2129  * @next: iteration pointer, must be a pointer to a void * that is set to %NULL
   2130  *	on the first call and not modified later
   2131  * Returns: A P2P Device Address for each call and %NULL for no more members
   2132  */
   2133 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);
   2134 
   2135 /**
   2136  * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group
   2137  * @group: P2P group context from p2p_group_init()
   2138  * @addr: P2P Interface Address of the client
   2139  * Returns: P2P Device Address of the client if found or %NULL if no match
   2140  * found
   2141  */
   2142 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);
   2143 
   2144 /**
   2145  * p2p_group_is_client_connected - Check whether a specific client is connected
   2146  * @group: P2P group context from p2p_group_init()
   2147  * @addr: P2P Device Address of the client
   2148  * Returns: 1 if client is connected or 0 if not
   2149  */
   2150 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr);
   2151 
   2152 /**
   2153  * p2p_group_get_config - Get the group configuration
   2154  * @group: P2P group context from p2p_group_init()
   2155  * Returns: The group configuration pointer
   2156  */
   2157 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group);
   2158 
   2159 /**
   2160  * p2p_loop_on_all_groups - Run the given callback on all groups
   2161  * @p2p: P2P module context from p2p_init()
   2162  * @group_callback: The callback function pointer
   2163  * @user_data: Some user data pointer which can be %NULL
   2164  *
   2165  * The group_callback function can stop the iteration by returning 0.
   2166  */
   2167 void p2p_loop_on_all_groups(struct p2p_data *p2p,
   2168 			    int (*group_callback)(struct p2p_group *group,
   2169 						  void *user_data),
   2170 			    void *user_data);
   2171 
   2172 /**
   2173  * p2p_get_peer_found - Get P2P peer info structure of a found peer
   2174  * @p2p: P2P module context from p2p_init()
   2175  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
   2176  * @next: Whether to select the peer entry following the one indicated by addr
   2177  * Returns: The first P2P peer info available or %NULL if no such peer exists
   2178  */
   2179 const struct p2p_peer_info *
   2180 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next);
   2181 
   2182 /**
   2183  * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions
   2184  * @p2p: P2P module context from p2p_init()
   2185  */
   2186 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);
   2187 
   2188 /**
   2189  * p2p_add_wps_vendor_extension - Add a WPS vendor extension
   2190  * @p2p: P2P module context from p2p_init()
   2191  * @vendor_ext: The vendor extensions to add
   2192  * Returns: 0 on success, -1 on failure
   2193  *
   2194  * The wpabuf structures in the array are owned by the P2P
   2195  * module after this call.
   2196  */
   2197 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
   2198 				 const struct wpabuf *vendor_ext);
   2199 
   2200 /**
   2201  * p2p_set_oper_channel - Set the P2P operating channel
   2202  * @p2p: P2P module context from p2p_init()
   2203  * @op_reg_class: Operating regulatory class to set
   2204  * @op_channel: operating channel to set
   2205  * @cfg_op_channel : Whether op_channel is hardcoded in configuration
   2206  * Returns: 0 on success, -1 on failure
   2207  */
   2208 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
   2209 			 int cfg_op_channel);
   2210 
   2211 /**
   2212  * p2p_set_pref_chan - Set P2P preferred channel list
   2213  * @p2p: P2P module context from p2p_init()
   2214  * @num_pref_chan: Number of entries in pref_chan list
   2215  * @pref_chan: Preferred channels or %NULL to remove preferences
   2216  * Returns: 0 on success, -1 on failure
   2217  */
   2218 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
   2219 		      const struct p2p_channel *pref_chan);
   2220 
   2221 /**
   2222  * p2p_set_no_go_freq - Set no GO channel ranges
   2223  * @p2p: P2P module context from p2p_init()
   2224  * @list: Channel ranges or %NULL to remove restriction
   2225  * Returns: 0 on success, -1 on failure
   2226  */
   2227 int p2p_set_no_go_freq(struct p2p_data *p2p,
   2228 		       const struct wpa_freq_range_list *list);
   2229 
   2230 /**
   2231  * p2p_in_progress - Check whether a P2P operation is progress
   2232  * @p2p: P2P module context from p2p_init()
   2233  * Returns: 0 if P2P module is idle, 1 if an operation is in progress but not
   2234  * in search state, or 2 if search state operation is in progress
   2235  */
   2236 int p2p_in_progress(struct p2p_data *p2p);
   2237 
   2238 const char * p2p_wps_method_text(enum p2p_wps_method method);
   2239 
   2240 /**
   2241  * p2p_set_config_timeout - Set local config timeouts
   2242  * @p2p: P2P module context from p2p_init()
   2243  * @go_timeout: Time in 10 ms units it takes to start the GO mode
   2244  * @client_timeout: Time in 10 ms units it takes to start the client mode
   2245  */
   2246 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
   2247 			    u8 client_timeout);
   2248 
   2249 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie);
   2250 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie);
   2251 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie);
   2252 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie);
   2253 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie);
   2254 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie);
   2255 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie);
   2256 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie);
   2257 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
   2258 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem);
   2259 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
   2260 				  const struct wpabuf *elem);
   2261 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems);
   2262 
   2263 /**
   2264  * p2p_set_disc_int - Set min/max discoverable interval for p2p_find
   2265  * @p2p: P2P module context from p2p_init()
   2266  * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1
   2267  * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3
   2268  * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or
   2269  *	-1 not to limit
   2270  * Returns: 0 on success, or -1 on failure
   2271  *
   2272  * This function can be used to configure minDiscoverableInterval and
   2273  * maxDiscoverableInterval parameters for the Listen state during device
   2274  * discovery (p2p_find). A random number of 100 TU units is picked for each
   2275  * Listen state iteration from [min_disc_int,max_disc_int] range.
   2276  *
   2277  * max_disc_tu can be used to futher limit the discoverable duration. However,
   2278  * it should be noted that use of this parameter is not recommended since it
   2279  * would not be compliant with the P2P specification.
   2280  */
   2281 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
   2282 		     int max_disc_tu);
   2283 
   2284 /**
   2285  * p2p_get_state_txt - Get current P2P state for debug purposes
   2286  * @p2p: P2P module context from p2p_init()
   2287  * Returns: Name of the current P2P module state
   2288  *
   2289  * It should be noted that the P2P module state names are internal information
   2290  * and subject to change at any point, i.e., this information should be used
   2291  * mainly for debugging purposes.
   2292  */
   2293 const char * p2p_get_state_txt(struct p2p_data *p2p);
   2294 
   2295 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
   2296 					   int client_freq,
   2297 					   const u8 *go_dev_addr,
   2298 					   const u8 *ssid, size_t ssid_len);
   2299 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
   2300 					   int client_freq,
   2301 					   const u8 *go_dev_addr,
   2302 					   const u8 *ssid, size_t ssid_len);
   2303 
   2304 struct p2p_nfc_params {
   2305 	int sel;
   2306 	const u8 *wsc_attr;
   2307 	size_t wsc_len;
   2308 	const u8 *p2p_attr;
   2309 	size_t p2p_len;
   2310 
   2311 	enum {
   2312 		NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG,
   2313 		BOTH_GO, PEER_CLIENT
   2314 	} next_step;
   2315 	struct p2p_peer_info *peer;
   2316 	u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 +
   2317 		      WPS_OOB_DEVICE_PASSWORD_LEN];
   2318 	size_t oob_dev_pw_len;
   2319 	int go_freq;
   2320 	u8 go_dev_addr[ETH_ALEN];
   2321 	u8 go_ssid[SSID_MAX_LEN];
   2322 	size_t go_ssid_len;
   2323 };
   2324 
   2325 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
   2326 					struct p2p_nfc_params *params);
   2327 
   2328 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
   2329 				      int go_intent,
   2330 				      const u8 *own_interface_addr);
   2331 
   2332 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len);
   2333 
   2334 void p2p_loop_on_known_peers(struct p2p_data *p2p,
   2335 			     void (*peer_callback)(struct p2p_peer_info *peer,
   2336 						   void *user_data),
   2337 			     void *user_data);
   2338 
   2339 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem);
   2340 
   2341 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr);
   2342 
   2343 struct p2ps_advertisement *
   2344 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id);
   2345 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
   2346 			const char *adv_str, u8 svc_state,
   2347 			u16 config_methods, const char *svc_info,
   2348 			const u8 *cpt_priority);
   2349 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id);
   2350 void p2p_service_flush_asp(struct p2p_data *p2p);
   2351 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p);
   2352 
   2353 /**
   2354  * p2p_expire_peers - Periodic cleanup function to expire peers
   2355  * @p2p: P2P module context from p2p_init()
   2356  *
   2357  * This is a cleanup function that the entity calling p2p_init() is
   2358  * expected to call periodically to clean up expired peer entries.
   2359  */
   2360 void p2p_expire_peers(struct p2p_data *p2p);
   2361 
   2362 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
   2363 				const unsigned int *pref_freq_list,
   2364 				unsigned int size);
   2365 
   2366 /**
   2367  * p2p_group_get_common_freqs - Get the group common frequencies
   2368  * @group: P2P group context from p2p_group_init()
   2369  * @common_freqs: On return will hold the group common frequencies
   2370  * @num: On return will hold the number of group common frequencies
   2371  * Returns: 0 on success, -1 otherwise
   2372  */
   2373 int p2p_group_get_common_freqs(struct p2p_group *group, int *common_freqs,
   2374 			       unsigned int *num);
   2375 
   2376 #endif /* P2P_H */
   2377