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      1 /*
      2  * P2P - Internal definitions for 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_I_H
     10 #define P2P_I_H
     11 
     12 #include "utils/list.h"
     13 #include "p2p.h"
     14 
     15 #define P2P_GO_NEG_CNF_MAX_RETRY_COUNT 1
     16 
     17 /*
     18  * A threshold (in seconds) to prefer a direct Probe Response frame from a P2P
     19  * Device over the P2P Client Info received from a GO.
     20  */
     21 #define P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD 1
     22 
     23 enum p2p_role_indication;
     24 
     25 /*
     26  * To force Service Instances to fit within a single P2P Tag, MAX_SVC_ADV_LEN
     27  * must equal 248 or less. Must have a minimum size of 19.
     28  */
     29 #define MAX_SVC_ADV_LEN	600
     30 #define MAX_SVC_ADV_IE_LEN (9 + MAX_SVC_ADV_LEN + (5 * (MAX_SVC_ADV_LEN / 240)))
     31 
     32 enum p2p_go_state {
     33 	UNKNOWN_GO,
     34 	LOCAL_GO,
     35 	REMOTE_GO
     36 };
     37 
     38 /**
     39  * struct p2p_device - P2P Device data (internal to P2P module)
     40  */
     41 struct p2p_device {
     42 	struct dl_list list;
     43 	struct os_reltime last_seen;
     44 	int listen_freq;
     45 	int oob_go_neg_freq;
     46 	enum p2p_wps_method wps_method;
     47 	u16 oob_pw_id;
     48 
     49 	struct p2p_peer_info info;
     50 
     51 	/*
     52 	 * If the peer was discovered based on an interface address (e.g., GO
     53 	 * from Beacon/Probe Response), the interface address is stored here.
     54 	 * p2p_device_addr must still be set in such a case to the unique
     55 	 * identifier for the P2P Device.
     56 	 *
     57 	 * This field is also used during P2PS PD to store the intended GO
     58 	 * address of the peer.
     59 	 */
     60 	u8 interface_addr[ETH_ALEN];
     61 
     62 	/*
     63 	 * P2P Device Address of the GO in whose group this P2P Device is a
     64 	 * client.
     65 	 */
     66 	u8 member_in_go_dev[ETH_ALEN];
     67 
     68 	/*
     69 	 * P2P Interface Address of the GO in whose group this P2P Device is a
     70 	 * client.
     71 	 */
     72 	u8 member_in_go_iface[ETH_ALEN];
     73 
     74 	int go_neg_req_sent;
     75 	enum p2p_go_state go_state;
     76 	u8 dialog_token;
     77 	u8 tie_breaker;
     78 	u8 intended_addr[ETH_ALEN];
     79 
     80 	char country[3];
     81 	struct p2p_channels channels;
     82 	int oper_freq;
     83 	u8 oper_ssid[SSID_MAX_LEN];
     84 	size_t oper_ssid_len;
     85 
     86 	/**
     87 	 * req_config_methods - Pending provision discovery methods
     88 	 */
     89 	u16 req_config_methods;
     90 
     91 	/**
     92 	 * wps_prov_info - Stored provisioning WPS config method
     93 	 *
     94 	 * This is used to store pending WPS config method between Provisioning
     95 	 * Discovery and connection to a running group.
     96 	 */
     97 	u16 wps_prov_info;
     98 
     99 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
    100 #define P2P_DEV_REPORTED BIT(1)
    101 #define P2P_DEV_NOT_YET_READY BIT(2)
    102 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
    103 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
    104 #define P2P_DEV_USER_REJECTED BIT(7)
    105 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
    106 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
    107 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
    108 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
    109 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
    110 #define P2P_DEV_FORCE_FREQ BIT(13)
    111 #define P2P_DEV_PD_FOR_JOIN BIT(14)
    112 #define P2P_DEV_REPORTED_ONCE BIT(15)
    113 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
    114 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
    115 #define P2P_DEV_NO_PREF_CHAN BIT(18)
    116 #define P2P_DEV_WAIT_INV_REQ_ACK BIT(19)
    117 #define P2P_DEV_P2PS_REPORTED BIT(20)
    118 #define P2P_DEV_PD_PEER_P2PS BIT(21)
    119 #define P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT BIT(22)
    120 
    121 	unsigned int flags;
    122 
    123 	int status; /* enum p2p_status_code */
    124 	unsigned int wait_count;
    125 	unsigned int connect_reqs;
    126 	unsigned int invitation_reqs;
    127 	unsigned int sd_reqs;
    128 
    129 	u16 ext_listen_period;
    130 	u16 ext_listen_interval;
    131 
    132 	u8 go_timeout;
    133 	u8 client_timeout;
    134 
    135 	/**
    136 	 * go_neg_conf_sent - Number of GO Negotiation Confirmation retries
    137 	 */
    138 	u8 go_neg_conf_sent;
    139 
    140 	/**
    141 	 * freq - Frquency on which the GO Negotiation Confirmation is sent
    142 	 */
    143 	int go_neg_conf_freq;
    144 
    145 	/**
    146 	 * go_neg_conf - GO Negotiation Confirmation frame
    147 	 */
    148 	struct wpabuf *go_neg_conf;
    149 
    150 	int sd_pending_bcast_queries;
    151 };
    152 
    153 struct p2p_sd_query {
    154 	struct p2p_sd_query *next;
    155 	u8 peer[ETH_ALEN];
    156 	int for_all_peers;
    157 	int wsd; /* Wi-Fi Display Service Discovery Request */
    158 	struct wpabuf *tlvs;
    159 };
    160 
    161 struct p2p_pending_action_tx {
    162 	unsigned int freq;
    163 	u8 dst[ETH_ALEN];
    164 	u8 src[ETH_ALEN];
    165 	u8 bssid[ETH_ALEN];
    166 	size_t len;
    167 	unsigned int wait_time;
    168 	/* Followed by len octets of the frame */
    169 };
    170 
    171 /**
    172  * struct p2p_data - P2P module data (internal to P2P module)
    173  */
    174 struct p2p_data {
    175 	/**
    176 	 * cfg - P2P module configuration
    177 	 *
    178 	 * This is included in the same memory allocation with the
    179 	 * struct p2p_data and as such, must not be freed separately.
    180 	 */
    181 	struct p2p_config *cfg;
    182 
    183 	/**
    184 	 * state - The current P2P state
    185 	 */
    186 	enum p2p_state {
    187 		/**
    188 		 * P2P_IDLE - Idle
    189 		 */
    190 		P2P_IDLE,
    191 
    192 		/**
    193 		 * P2P_SEARCH - Search (Device Discovery)
    194 		 */
    195 		P2P_SEARCH,
    196 
    197 		/**
    198 		 * P2P_CONNECT - Trying to start GO Negotiation
    199 		 */
    200 		P2P_CONNECT,
    201 
    202 		/**
    203 		 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
    204 		 */
    205 		P2P_CONNECT_LISTEN,
    206 
    207 		/**
    208 		 * P2P_GO_NEG - In GO Negotiation
    209 		 */
    210 		P2P_GO_NEG,
    211 
    212 		/**
    213 		 * P2P_LISTEN_ONLY - Listen only
    214 		 */
    215 		P2P_LISTEN_ONLY,
    216 
    217 		/**
    218 		 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
    219 		 */
    220 		P2P_WAIT_PEER_CONNECT,
    221 
    222 		/**
    223 		 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
    224 		 */
    225 		P2P_WAIT_PEER_IDLE,
    226 
    227 		/**
    228 		 * P2P_SD_DURING_FIND - Service Discovery during find
    229 		 */
    230 		P2P_SD_DURING_FIND,
    231 
    232 		/**
    233 		 * P2P_PROVISIONING - Provisioning (during group formation)
    234 		 */
    235 		P2P_PROVISIONING,
    236 
    237 		/**
    238 		 * P2P_PD_DURING_FIND - Provision Discovery during find
    239 		 */
    240 		P2P_PD_DURING_FIND,
    241 
    242 		/**
    243 		 * P2P_INVITE - Trying to start Invite
    244 		 */
    245 		P2P_INVITE,
    246 
    247 		/**
    248 		 * P2P_INVITE_LISTEN - Listen during Invite
    249 		 */
    250 		P2P_INVITE_LISTEN,
    251 	} state;
    252 
    253 	/**
    254 	 * min_disc_int - minDiscoverableInterval
    255 	 */
    256 	int min_disc_int;
    257 
    258 	/**
    259 	 * max_disc_int - maxDiscoverableInterval
    260 	 */
    261 	int max_disc_int;
    262 
    263 	/**
    264 	 * max_disc_tu - Maximum number of TUs for discoverable interval
    265 	 */
    266 	int max_disc_tu;
    267 
    268 	/**
    269 	 * devices - List of known P2P Device peers
    270 	 */
    271 	struct dl_list devices;
    272 
    273 	/**
    274 	 * go_neg_peer - Pointer to GO Negotiation peer
    275 	 */
    276 	struct p2p_device *go_neg_peer;
    277 
    278 	/**
    279 	 * invite_peer - Pointer to Invite peer
    280 	 */
    281 	struct p2p_device *invite_peer;
    282 
    283 	/**
    284 	 * last_p2p_find_oper - Pointer to last pre-find operation peer
    285 	 */
    286 	struct p2p_device *last_p2p_find_oper;
    287 
    288 	const u8 *invite_go_dev_addr;
    289 	u8 invite_go_dev_addr_buf[ETH_ALEN];
    290 	int invite_dev_pw_id;
    291 
    292 	unsigned int retry_invite_req:1;
    293 	unsigned int retry_invite_req_sent:1;
    294 
    295 	/**
    296 	 * sd_peer - Pointer to Service Discovery peer
    297 	 */
    298 	struct p2p_device *sd_peer;
    299 
    300 	/**
    301 	 * sd_query - Pointer to Service Discovery query
    302 	 */
    303 	struct p2p_sd_query *sd_query;
    304 
    305 	/**
    306 	 * num_p2p_sd_queries - Total number of broadcast SD queries present in
    307 	 * the list
    308 	 */
    309 	int num_p2p_sd_queries;
    310 
    311 	/**
    312 	 * sd_query_no_ack - The first peer (Dev Addr) that did not ACK SD Query
    313 	 *
    314 	 * This is used to track the first peer that did not ACK an SD Query
    315 	 * within a single P2P Search iteration. All zeros address means no such
    316 	 * peer was yet seen. This information is used to allow a new Listen and
    317 	 * Search phases to be once every pending SD Query has been sent once to
    318 	 * each peer instead of looping all pending attempts continuously until
    319 	 * running out of retry maximums.
    320 	 */
    321 	u8 sd_query_no_ack[ETH_ALEN];
    322 
    323 	/* GO Negotiation data */
    324 
    325 	/**
    326 	 * intended_addr - Local Intended P2P Interface Address
    327 	 *
    328 	 * This address is used during group owner negotiation as the Intended
    329 	 * P2P Interface Address and the group interface will be created with
    330 	 * address as the local address in case of successfully completed
    331 	 * negotiation.
    332 	 */
    333 	u8 intended_addr[ETH_ALEN];
    334 
    335 	/**
    336 	 * go_intent - Local GO Intent to be used during GO Negotiation
    337 	 */
    338 	u8 go_intent;
    339 
    340 	/**
    341 	 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
    342 	 */
    343 	u8 next_tie_breaker;
    344 
    345 	/**
    346 	 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
    347 	 */
    348 	u8 ssid[SSID_MAX_LEN];
    349 
    350 	/**
    351 	 * ssid_len - ssid length in octets
    352 	 */
    353 	size_t ssid_len;
    354 
    355 	/**
    356 	 * ssid_set - Whether SSID is already set for GO Negotiation
    357 	 */
    358 	int ssid_set;
    359 
    360 	/**
    361 	 * Regulatory class for own operational channel
    362 	 */
    363 	u8 op_reg_class;
    364 
    365 	/**
    366 	 * op_channel - Own operational channel
    367 	 */
    368 	u8 op_channel;
    369 
    370 	/**
    371 	 * channels - Own supported regulatory classes and channels
    372 	 *
    373 	 * List of supposerted channels per regulatory class. The regulatory
    374 	 * classes are defined in IEEE Std 802.11-2007 Annex J and the
    375 	 * numbering of the clases depends on the configured country code.
    376 	 */
    377 	struct p2p_channels channels;
    378 
    379 	struct wpa_freq_range_list no_go_freq;
    380 
    381 	enum p2p_pending_action_state {
    382 		P2P_NO_PENDING_ACTION,
    383 		P2P_PENDING_GO_NEG_REQUEST,
    384 		P2P_PENDING_GO_NEG_RESPONSE,
    385 		P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
    386 		P2P_PENDING_GO_NEG_CONFIRM,
    387 		P2P_PENDING_SD,
    388 		P2P_PENDING_PD,
    389 		P2P_PENDING_PD_RESPONSE,
    390 		P2P_PENDING_INVITATION_REQUEST,
    391 		P2P_PENDING_INVITATION_RESPONSE,
    392 		P2P_PENDING_DEV_DISC_REQUEST,
    393 		P2P_PENDING_DEV_DISC_RESPONSE,
    394 		P2P_PENDING_GO_DISC_REQ
    395 	} pending_action_state;
    396 
    397 	unsigned int pending_listen_freq;
    398 	unsigned int pending_listen_sec;
    399 	unsigned int pending_listen_usec;
    400 
    401 	u8 dev_capab;
    402 
    403 	int in_listen;
    404 	int drv_in_listen;
    405 
    406 	/**
    407 	 * sd_queries - Pending service discovery queries
    408 	 */
    409 	struct p2p_sd_query *sd_queries;
    410 
    411 	/**
    412 	 * srv_update_indic - Service Update Indicator for local services
    413 	 */
    414 	u16 srv_update_indic;
    415 
    416 	struct wpabuf *sd_resp; /* Fragmented SD response */
    417 	u8 sd_resp_addr[ETH_ALEN];
    418 	u8 sd_resp_dialog_token;
    419 	size_t sd_resp_pos; /* Offset in sd_resp */
    420 	u8 sd_frag_id;
    421 
    422 	struct wpabuf *sd_rx_resp; /* Reassembled SD response */
    423 	u16 sd_rx_update_indic;
    424 
    425 	/* P2P Invitation data */
    426 	enum p2p_invite_role inv_role;
    427 	u8 inv_bssid[ETH_ALEN];
    428 	int inv_bssid_set;
    429 	u8 inv_ssid[SSID_MAX_LEN];
    430 	size_t inv_ssid_len;
    431 	u8 inv_sa[ETH_ALEN];
    432 	u8 inv_group_bssid[ETH_ALEN];
    433 	u8 *inv_group_bssid_ptr;
    434 	u8 inv_go_dev_addr[ETH_ALEN];
    435 	u8 inv_status;
    436 	int inv_op_freq;
    437 	int inv_persistent;
    438 
    439 	enum p2p_discovery_type find_type;
    440 	unsigned int last_p2p_find_timeout;
    441 	u8 last_prog_scan_class;
    442 	u8 last_prog_scan_chan;
    443 	int p2p_scan_running;
    444 	enum p2p_after_scan {
    445 		P2P_AFTER_SCAN_NOTHING,
    446 		P2P_AFTER_SCAN_LISTEN,
    447 		P2P_AFTER_SCAN_CONNECT
    448 	} start_after_scan;
    449 	u8 after_scan_peer[ETH_ALEN];
    450 	struct p2p_pending_action_tx *after_scan_tx;
    451 	unsigned int after_scan_tx_in_progress:1;
    452 	unsigned int send_action_in_progress:1;
    453 
    454 	/* Requested device types for find/search */
    455 	unsigned int num_req_dev_types;
    456 	u8 *req_dev_types;
    457 	u8 *find_dev_id;
    458 	u8 find_dev_id_buf[ETH_ALEN];
    459 
    460 	struct os_reltime find_start; /* time of last p2p_find start */
    461 
    462 	struct p2p_group **groups;
    463 	size_t num_groups;
    464 
    465 	struct p2p_device *pending_client_disc_go;
    466 	u8 pending_client_disc_addr[ETH_ALEN];
    467 	u8 pending_dev_disc_dialog_token;
    468 	u8 pending_dev_disc_addr[ETH_ALEN];
    469 	int pending_dev_disc_freq;
    470 	unsigned int pending_client_disc_freq;
    471 
    472 	int ext_listen_only;
    473 	unsigned int ext_listen_period;
    474 	unsigned int ext_listen_interval;
    475 	unsigned int ext_listen_interval_sec;
    476 	unsigned int ext_listen_interval_usec;
    477 
    478 	u8 peer_filter[ETH_ALEN];
    479 
    480 	int cross_connect;
    481 
    482 	int best_freq_24;
    483 	int best_freq_5;
    484 	int best_freq_overall;
    485 	int own_freq_preference;
    486 
    487 	/**
    488 	 * wps_vendor_ext - WPS Vendor Extensions to add
    489 	 */
    490 	struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
    491 
    492 	/*
    493 	 * user_initiated_pd - Whether a PD request is user initiated or not.
    494 	 */
    495 	u8 user_initiated_pd;
    496 
    497 	/*
    498 	 * Keep track of which peer a given PD request was sent to.
    499 	 * Used to raise a timeout alert in case there is no response.
    500 	 */
    501 	u8 pending_pd_devaddr[ETH_ALEN];
    502 
    503 	/*
    504 	 * Retry counter for provision discovery requests when issued
    505 	 * in IDLE state.
    506 	 */
    507 	int pd_retries;
    508 
    509 	/**
    510 	 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
    511 	 *
    512 	 * This is is used during PD retries for join-a-group case to use the
    513 	 * correct operating frequency determined from a BSS entry for the GO.
    514 	 */
    515 	int pd_force_freq;
    516 
    517 	u8 go_timeout;
    518 	u8 client_timeout;
    519 
    520 	/* Extra delay in milliseconds between search iterations */
    521 	unsigned int search_delay;
    522 	int in_search_delay;
    523 
    524 	u8 pending_reg_class;
    525 	u8 pending_channel;
    526 	u8 pending_channel_forced;
    527 
    528 	/* ASP Support */
    529 	struct p2ps_advertisement *p2ps_adv_list;
    530 	struct p2ps_provision *p2ps_prov;
    531 	u8 wild_card_hash[P2PS_HASH_LEN];
    532 	u8 p2ps_seek;
    533 	u8 p2ps_seek_hash[P2P_MAX_QUERY_HASH * P2PS_HASH_LEN];
    534 	u8 p2ps_seek_count;
    535 
    536 #ifdef CONFIG_WIFI_DISPLAY
    537 	struct wpabuf *wfd_ie_beacon;
    538 	struct wpabuf *wfd_ie_probe_req;
    539 	struct wpabuf *wfd_ie_probe_resp;
    540 	struct wpabuf *wfd_ie_assoc_req;
    541 	struct wpabuf *wfd_ie_invitation;
    542 	struct wpabuf *wfd_ie_prov_disc_req;
    543 	struct wpabuf *wfd_ie_prov_disc_resp;
    544 	struct wpabuf *wfd_ie_go_neg;
    545 	struct wpabuf *wfd_dev_info;
    546 	struct wpabuf *wfd_assoc_bssid;
    547 	struct wpabuf *wfd_coupled_sink_info;
    548 #endif /* CONFIG_WIFI_DISPLAY */
    549 
    550 	u16 authorized_oob_dev_pw_id;
    551 
    552 	struct wpabuf **vendor_elem;
    553 
    554 	unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
    555 	unsigned int num_pref_freq;
    556 };
    557 
    558 /**
    559  * struct p2p_message - Parsed P2P message (or P2P IE)
    560  */
    561 struct p2p_message {
    562 	struct wpabuf *p2p_attributes;
    563 	struct wpabuf *wps_attributes;
    564 	struct wpabuf *wfd_subelems;
    565 
    566 	u8 dialog_token;
    567 
    568 	const u8 *capability;
    569 	const u8 *go_intent;
    570 	const u8 *status;
    571 	const u8 *listen_channel;
    572 	const u8 *operating_channel;
    573 	const u8 *channel_list;
    574 	u8 channel_list_len;
    575 	const u8 *config_timeout;
    576 	const u8 *intended_addr;
    577 	const u8 *group_bssid;
    578 	const u8 *invitation_flags;
    579 
    580 	const u8 *group_info;
    581 	size_t group_info_len;
    582 
    583 	const u8 *group_id;
    584 	size_t group_id_len;
    585 
    586 	const u8 *device_id;
    587 
    588 	const u8 *manageability;
    589 
    590 	const u8 *noa;
    591 	size_t noa_len;
    592 
    593 	const u8 *ext_listen_timing;
    594 
    595 	const u8 *minor_reason_code;
    596 
    597 	const u8 *oob_go_neg_channel;
    598 
    599 	/* P2P Device Info */
    600 	const u8 *p2p_device_info;
    601 	size_t p2p_device_info_len;
    602 	const u8 *p2p_device_addr;
    603 	const u8 *pri_dev_type;
    604 	u8 num_sec_dev_types;
    605 	char device_name[WPS_DEV_NAME_MAX_LEN + 1];
    606 	u16 config_methods;
    607 
    608 	/* WPS IE */
    609 	u16 dev_password_id;
    610 	int dev_password_id_present;
    611 	u16 wps_config_methods;
    612 	const u8 *wps_pri_dev_type;
    613 	const u8 *wps_sec_dev_type_list;
    614 	size_t wps_sec_dev_type_list_len;
    615 	const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
    616 	size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
    617 	const u8 *manufacturer;
    618 	size_t manufacturer_len;
    619 	const u8 *model_name;
    620 	size_t model_name_len;
    621 	const u8 *model_number;
    622 	size_t model_number_len;
    623 	const u8 *serial_number;
    624 	size_t serial_number_len;
    625 	const u8 *oob_dev_password;
    626 	size_t oob_dev_password_len;
    627 
    628 	/* DS Parameter Set IE */
    629 	const u8 *ds_params;
    630 
    631 	/* SSID IE */
    632 	const u8 *ssid;
    633 
    634 	/* P2PS */
    635 	u8 service_hash_count;
    636 	const u8 *service_hash;
    637 
    638 	const u8 *session_info;
    639 	size_t session_info_len;
    640 
    641 	const u8 *conn_cap;
    642 
    643 	const u8 *adv_id;
    644 	const u8 *adv_mac;
    645 
    646 	const u8 *adv_service_instance;
    647 	size_t adv_service_instance_len;
    648 
    649 	const u8 *session_id;
    650 	const u8 *session_mac;
    651 
    652 	const u8 *feature_cap;
    653 	size_t feature_cap_len;
    654 
    655 	const u8 *persistent_dev;
    656 	const u8 *persistent_ssid;
    657 	size_t persistent_ssid_len;
    658 
    659 	const u8 *pref_freq_list;
    660 	size_t pref_freq_list_len;
    661 };
    662 
    663 
    664 #define P2P_MAX_GROUP_ENTRIES 50
    665 
    666 struct p2p_group_info {
    667 	unsigned int num_clients;
    668 	struct p2p_client_info {
    669 		const u8 *p2p_device_addr;
    670 		const u8 *p2p_interface_addr;
    671 		u8 dev_capab;
    672 		u16 config_methods;
    673 		const u8 *pri_dev_type;
    674 		u8 num_sec_dev_types;
    675 		const u8 *sec_dev_types;
    676 		const char *dev_name;
    677 		size_t dev_name_len;
    678 	} client[P2P_MAX_GROUP_ENTRIES];
    679 };
    680 
    681 
    682 /* p2p_utils.c */
    683 int p2p_random(char *buf, size_t len);
    684 int p2p_channel_to_freq(int op_class, int channel);
    685 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
    686 void p2p_channels_intersect(const struct p2p_channels *a,
    687 			    const struct p2p_channels *b,
    688 			    struct p2p_channels *res);
    689 void p2p_channels_union_inplace(struct p2p_channels *res,
    690 				const struct p2p_channels *b);
    691 void p2p_channels_union(const struct p2p_channels *a,
    692 			const struct p2p_channels *b,
    693 			struct p2p_channels *res);
    694 void p2p_channels_remove_freqs(struct p2p_channels *chan,
    695 			       const struct wpa_freq_range_list *list);
    696 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
    697 			  u8 channel);
    698 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
    699 		       const struct p2p_channels *chan);
    700 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
    701 		       u8 *op_class, u8 *op_channel);
    702 int p2p_channel_random_social(struct p2p_channels *chans, u8 *op_class,
    703 			      u8 *op_channel);
    704 
    705 /* p2p_parse.c */
    706 void p2p_copy_filter_devname(char *dst, size_t dst_len,
    707 			     const void *src, size_t src_len);
    708 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
    709 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
    710 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
    711 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
    712 			   size_t p2p_len, struct p2p_message *msg);
    713 void p2p_parse_free(struct p2p_message *msg);
    714 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
    715 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
    716 			 struct p2p_group_info *info);
    717 
    718 /* p2p_build.c */
    719 
    720 struct p2p_noa_desc {
    721 	u8 count_type;
    722 	u32 duration;
    723 	u32 interval;
    724 	u32 start_time;
    725 };
    726 
    727 /* p2p_group.c */
    728 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
    729 u8 p2p_group_presence_req(struct p2p_group *group,
    730 			  const u8 *client_interface_addr,
    731 			  const u8 *noa, size_t noa_len);
    732 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
    733 				size_t group_id_len);
    734 void p2p_group_update_ies(struct p2p_group *group);
    735 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
    736 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
    737 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
    738 			    int max_clients);
    739 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
    740 int p2p_group_get_freq(struct p2p_group *group);
    741 
    742 
    743 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
    744 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
    745 				   u8 dialog_token);
    746 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
    747 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
    748 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
    749 			     struct p2p_device *peer);
    750 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
    751 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
    752 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
    753 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
    754 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
    755 				u8 reg_class, u8 channel);
    756 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
    757 				   u8 reg_class, u8 channel);
    758 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
    759 			      struct p2p_channels *chan);
    760 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
    761 				u8 client_timeout);
    762 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
    763 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
    764 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
    765 			  const u8 *ssid, size_t ssid_len);
    766 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
    767 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
    768 		     struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
    769 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
    770 				   u16 interval);
    771 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
    772 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
    773 				    u8 oper_class, u8 channel,
    774 				    enum p2p_role_indication role);
    775 void p2p_buf_add_service_hash(struct wpabuf *buf, struct p2p_data *p2p);
    776 void p2p_buf_add_session_info(struct wpabuf *buf, const char *info);
    777 void p2p_buf_add_connection_capability(struct wpabuf *buf, u8 connection_cap);
    778 void p2p_buf_add_advertisement_id(struct wpabuf *buf, u32 id, const u8 *mac);
    779 void p2p_buf_add_service_instance(struct wpabuf *buf, struct p2p_data *p2p,
    780 				  u8 count, const u8 *hash,
    781 				  struct p2ps_advertisement *adv_list);
    782 void p2p_buf_add_session_id(struct wpabuf *buf, u32 id, const u8 *mac);
    783 void p2p_buf_add_feature_capability(struct wpabuf *buf, u16 len,
    784 				    const u8 *mask);
    785 void p2p_buf_add_persistent_group_info(struct wpabuf *buf, const u8 *dev_addr,
    786 				       const u8 *ssid, size_t ssid_len);
    787 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
    788 		     int all_attr);
    789 void p2p_buf_add_pref_channel_list(struct wpabuf *buf,
    790 				   const u32 *preferred_freq_list, u32 size);
    791 
    792 /* p2p_sd.c */
    793 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
    794 					 struct p2p_device *dev);
    795 void p2p_free_sd_queries(struct p2p_data *p2p);
    796 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
    797 			    const u8 *data, size_t len, int rx_freq);
    798 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
    799 			     const u8 *data, size_t len, int rx_freq);
    800 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
    801 			     const u8 *data, size_t len, int rx_freq);
    802 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
    803 			      const u8 *data, size_t len, int rx_freq);
    804 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
    805 
    806 /* p2p_go_neg.c */
    807 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
    808 			    struct p2p_device *dev,
    809 			    const u8 *channel_list, size_t channel_list_len);
    810 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
    811 			    const u8 *data, size_t len, int rx_freq);
    812 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
    813 			     const u8 *data, size_t len, int rx_freq);
    814 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
    815 			     const u8 *data, size_t len);
    816 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
    817 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
    818 void p2p_reselect_channel(struct p2p_data *p2p,
    819 			  struct p2p_channels *intersection);
    820 void p2p_check_pref_chan(struct p2p_data *p2p, int go,
    821 			 struct p2p_device *dev, struct p2p_message *msg);
    822 
    823 /* p2p_pd.c */
    824 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
    825 			       const u8 *data, size_t len, int rx_freq);
    826 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
    827 				const u8 *data, size_t len);
    828 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
    829 			   int join, int force_freq);
    830 void p2p_reset_pending_pd(struct p2p_data *p2p);
    831 void p2ps_prov_free(struct p2p_data *p2p);
    832 
    833 /* p2p_invitation.c */
    834 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
    835 				const u8 *data, size_t len, int rx_freq);
    836 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
    837 				 const u8 *data, size_t len);
    838 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
    839 		    const u8 *go_dev_addr, int dev_pw_id);
    840 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
    841 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
    842 
    843 /* p2p_dev_disc.c */
    844 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
    845 			      const u8 *data, size_t len, int rx_freq);
    846 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
    847 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
    848 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
    849 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
    850 			       const u8 *data, size_t len);
    851 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
    852 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
    853 			     const u8 *data, size_t len, int rx_freq);
    854 
    855 /* p2p.c */
    856 void p2p_set_state(struct p2p_data *p2p, int new_state);
    857 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
    858 		     unsigned int usec);
    859 void p2p_clear_timeout(struct p2p_data *p2p);
    860 void p2p_continue_find(struct p2p_data *p2p);
    861 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
    862 						const u8 *addr,
    863 						struct p2p_message *msg);
    864 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
    865 		      struct p2p_device *dev, struct p2p_message *msg);
    866 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
    867 		   struct os_reltime *rx_time, int level, const u8 *ies,
    868 		   size_t ies_len, int scan_res);
    869 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
    870 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
    871 					     const u8 *addr);
    872 void p2p_go_neg_failed(struct p2p_data *p2p, int status);
    873 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
    874 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
    875 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
    876 			size_t num_req_dev_type);
    877 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
    878 					 const u8 *query_hash,
    879 					 u8 query_count);
    880 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
    881 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
    882 		    const u8 *src, const u8 *bssid, const u8 *buf,
    883 		    size_t len, unsigned int wait_time);
    884 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
    885 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
    886 			unsigned int force_freq, unsigned int pref_freq,
    887 			int go);
    888 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx);
    889 int p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev,
    890 			  u8 *status);
    891 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
    892 PRINTF_FORMAT(2, 3);
    893 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
    894 PRINTF_FORMAT(2, 3);
    895 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
    896 PRINTF_FORMAT(2, 3);
    897 
    898 #endif /* P2P_I_H */
    899