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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 enum p2p_go_state {
     16 	UNKNOWN_GO,
     17 	LOCAL_GO,
     18 	REMOTE_GO
     19 };
     20 
     21 /**
     22  * struct p2p_device - P2P Device data (internal to P2P module)
     23  */
     24 struct p2p_device {
     25 	struct dl_list list;
     26 	struct os_time last_seen;
     27 	int listen_freq;
     28 	enum p2p_wps_method wps_method;
     29 
     30 	struct p2p_peer_info info;
     31 
     32 	/*
     33 	 * If the peer was discovered based on an interface address (e.g., GO
     34 	 * from Beacon/Probe Response), the interface address is stored here.
     35 	 * p2p_device_addr must still be set in such a case to the unique
     36 	 * identifier for the P2P Device.
     37 	 */
     38 	u8 interface_addr[ETH_ALEN];
     39 
     40 	/*
     41 	 * P2P Device Address of the GO in whose group this P2P Device is a
     42 	 * client.
     43 	 */
     44 	u8 member_in_go_dev[ETH_ALEN];
     45 
     46 	/*
     47 	 * P2P Interface Address of the GO in whose group this P2P Device is a
     48 	 * client.
     49 	 */
     50 	u8 member_in_go_iface[ETH_ALEN];
     51 
     52 	int go_neg_req_sent;
     53 	enum p2p_go_state go_state;
     54 	u8 dialog_token;
     55 	u8 tie_breaker;
     56 	u8 intended_addr[ETH_ALEN];
     57 
     58 	char country[3];
     59 	struct p2p_channels channels;
     60 	int oper_freq;
     61 	u8 oper_ssid[32];
     62 	size_t oper_ssid_len;
     63 
     64 	/**
     65 	 * req_config_methods - Pending provision discovery methods
     66 	 */
     67 	u16 req_config_methods;
     68 
     69 	/**
     70 	 * wps_prov_info - Stored provisioning WPS config method
     71 	 *
     72 	 * This is used to store pending WPS config method between Provisioning
     73 	 * Discovery and connection to a running group.
     74 	 */
     75 	u16 wps_prov_info;
     76 
     77 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
     78 #define P2P_DEV_REPORTED BIT(1)
     79 #define P2P_DEV_NOT_YET_READY BIT(2)
     80 #define P2P_DEV_SD_INFO BIT(3)
     81 #define P2P_DEV_SD_SCHEDULE BIT(4)
     82 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
     83 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
     84 #define P2P_DEV_USER_REJECTED BIT(7)
     85 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
     86 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
     87 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
     88 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
     89 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
     90 #define P2P_DEV_FORCE_FREQ BIT(13)
     91 #define P2P_DEV_PD_FOR_JOIN BIT(14)
     92 #define P2P_DEV_REPORTED_ONCE BIT(15)
     93 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
     94 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
     95 #define P2P_DEV_NO_PREF_CHAN BIT(18)
     96 	unsigned int flags;
     97 
     98 	int status; /* enum p2p_status_code */
     99 	unsigned int wait_count;
    100 	unsigned int connect_reqs;
    101 	unsigned int invitation_reqs;
    102 
    103 	u16 ext_listen_period;
    104 	u16 ext_listen_interval;
    105 
    106 	u8 go_timeout;
    107 	u8 client_timeout;
    108 };
    109 
    110 struct p2p_sd_query {
    111 	struct p2p_sd_query *next;
    112 	u8 peer[ETH_ALEN];
    113 	int for_all_peers;
    114 	int wsd; /* Wi-Fi Display Service Discovery Request */
    115 	struct wpabuf *tlvs;
    116 };
    117 
    118 struct p2p_pending_action_tx {
    119 	unsigned int freq;
    120 	u8 dst[ETH_ALEN];
    121 	u8 src[ETH_ALEN];
    122 	u8 bssid[ETH_ALEN];
    123 	size_t len;
    124 	unsigned int wait_time;
    125 	/* Followed by len octets of the frame */
    126 };
    127 
    128 /**
    129  * struct p2p_data - P2P module data (internal to P2P module)
    130  */
    131 struct p2p_data {
    132 	/**
    133 	 * cfg - P2P module configuration
    134 	 *
    135 	 * This is included in the same memory allocation with the
    136 	 * struct p2p_data and as such, must not be freed separately.
    137 	 */
    138 	struct p2p_config *cfg;
    139 
    140 	/**
    141 	 * state - The current P2P state
    142 	 */
    143 	enum p2p_state {
    144 		/**
    145 		 * P2P_IDLE - Idle
    146 		 */
    147 		P2P_IDLE,
    148 
    149 		/**
    150 		 * P2P_SEARCH - Search (Device Discovery)
    151 		 */
    152 		P2P_SEARCH,
    153 
    154 		/**
    155 		 * P2P_CONNECT - Trying to start GO Negotiation
    156 		 */
    157 		P2P_CONNECT,
    158 
    159 		/**
    160 		 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
    161 		 */
    162 		P2P_CONNECT_LISTEN,
    163 
    164 		/**
    165 		 * P2P_GO_NEG - In GO Negotiation
    166 		 */
    167 		P2P_GO_NEG,
    168 
    169 		/**
    170 		 * P2P_LISTEN_ONLY - Listen only
    171 		 */
    172 		P2P_LISTEN_ONLY,
    173 
    174 		/**
    175 		 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
    176 		 */
    177 		P2P_WAIT_PEER_CONNECT,
    178 
    179 		/**
    180 		 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
    181 		 */
    182 		P2P_WAIT_PEER_IDLE,
    183 
    184 		/**
    185 		 * P2P_SD_DURING_FIND - Service Discovery during find
    186 		 */
    187 		P2P_SD_DURING_FIND,
    188 
    189 		/**
    190 		 * P2P_PROVISIONING - Provisioning (during group formation)
    191 		 */
    192 		P2P_PROVISIONING,
    193 
    194 		/**
    195 		 * P2P_PD_DURING_FIND - Provision Discovery during find
    196 		 */
    197 		P2P_PD_DURING_FIND,
    198 
    199 		/**
    200 		 * P2P_INVITE - Trying to start Invite
    201 		 */
    202 		P2P_INVITE,
    203 
    204 		/**
    205 		 * P2P_INVITE_LISTEN - Listen during Invite
    206 		 */
    207 		P2P_INVITE_LISTEN,
    208 
    209 		/**
    210 		 * P2P_SEARCH_WHEN_READY - Waiting to start Search
    211 		 */
    212 		P2P_SEARCH_WHEN_READY,
    213 
    214 		/**
    215 		 * P2P_CONTINUE_SEARCH_WHEN_READY - Waiting to continue Search
    216 		 */
    217 		P2P_CONTINUE_SEARCH_WHEN_READY,
    218 	} state;
    219 
    220 	/**
    221 	 * min_disc_int - minDiscoverableInterval
    222 	 */
    223 	int min_disc_int;
    224 
    225 	/**
    226 	 * max_disc_int - maxDiscoverableInterval
    227 	 */
    228 	int max_disc_int;
    229 
    230 	/**
    231 	 * max_disc_tu - Maximum number of TUs for discoverable interval
    232 	 */
    233 	int max_disc_tu;
    234 
    235 	/**
    236 	 * devices - List of known P2P Device peers
    237 	 */
    238 	struct dl_list devices;
    239 
    240 #ifdef ANDROID_P2P
    241 	/**
    242 	 * sd_dev_list - device pointer to be serviced next
    243 	 * for service discovery
    244 	 */
    245 	struct dl_list *sd_dev_list;
    246 #endif
    247 
    248 	/**
    249 	 * go_neg_peer - Pointer to GO Negotiation peer
    250 	 */
    251 	struct p2p_device *go_neg_peer;
    252 
    253 	/**
    254 	 * invite_peer - Pointer to Invite peer
    255 	 */
    256 	struct p2p_device *invite_peer;
    257 
    258 	const u8 *invite_go_dev_addr;
    259 	u8 invite_go_dev_addr_buf[ETH_ALEN];
    260 
    261 	/**
    262 	 * sd_peer - Pointer to Service Discovery peer
    263 	 */
    264 	struct p2p_device *sd_peer;
    265 
    266 	/**
    267 	 * sd_query - Pointer to Service Discovery query
    268 	 */
    269 	struct p2p_sd_query *sd_query;
    270 
    271 	/* GO Negotiation data */
    272 
    273 	/**
    274 	 * intended_addr - Local Intended P2P Interface Address
    275 	 *
    276 	 * This address is used during group owner negotiation as the Intended
    277 	 * P2P Interface Address and the group interface will be created with
    278 	 * address as the local address in case of successfully completed
    279 	 * negotiation.
    280 	 */
    281 	u8 intended_addr[ETH_ALEN];
    282 
    283 	/**
    284 	 * go_intent - Local GO Intent to be used during GO Negotiation
    285 	 */
    286 	u8 go_intent;
    287 
    288 	/**
    289 	 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
    290 	 */
    291 	u8 next_tie_breaker;
    292 
    293 	/**
    294 	 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
    295 	 */
    296 	u8 ssid[32];
    297 
    298 	/**
    299 	 * ssid_len - ssid length in octets
    300 	 */
    301 	size_t ssid_len;
    302 
    303 	/**
    304 	 * ssid_set - Whether SSID is already set for GO Negotiation
    305 	 */
    306 	int ssid_set;
    307 
    308 	/**
    309 	 * Regulatory class for own operational channel
    310 	 */
    311 	u8 op_reg_class;
    312 
    313 	/**
    314 	 * op_channel - Own operational channel
    315 	 */
    316 	u8 op_channel;
    317 
    318 	/**
    319 	 * channels - Own supported regulatory classes and channels
    320 	 *
    321 	 * List of supposerted channels per regulatory class. The regulatory
    322 	 * classes are defined in IEEE Std 802.11-2007 Annex J and the
    323 	 * numbering of the clases depends on the configured country code.
    324 	 */
    325 	struct p2p_channels channels;
    326 
    327 	enum p2p_pending_action_state {
    328 		P2P_NO_PENDING_ACTION,
    329 		P2P_PENDING_GO_NEG_REQUEST,
    330 		P2P_PENDING_GO_NEG_RESPONSE,
    331 		P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
    332 		P2P_PENDING_GO_NEG_CONFIRM,
    333 		P2P_PENDING_SD,
    334 		P2P_PENDING_PD,
    335 		P2P_PENDING_INVITATION_REQUEST,
    336 		P2P_PENDING_INVITATION_RESPONSE,
    337 		P2P_PENDING_DEV_DISC_REQUEST,
    338 		P2P_PENDING_DEV_DISC_RESPONSE,
    339 		P2P_PENDING_GO_DISC_REQ
    340 	} pending_action_state;
    341 
    342 	unsigned int pending_listen_freq;
    343 	unsigned int pending_listen_sec;
    344 	unsigned int pending_listen_usec;
    345 
    346 	u8 dev_capab;
    347 
    348 	int in_listen;
    349 	int drv_in_listen;
    350 
    351 	/**
    352 	 * sd_queries - Pending service discovery queries
    353 	 */
    354 	struct p2p_sd_query *sd_queries;
    355 
    356 	/**
    357 	 * srv_update_indic - Service Update Indicator for local services
    358 	 */
    359 	u16 srv_update_indic;
    360 
    361 	struct wpabuf *sd_resp; /* Fragmented SD response */
    362 	u8 sd_resp_addr[ETH_ALEN];
    363 	u8 sd_resp_dialog_token;
    364 	size_t sd_resp_pos; /* Offset in sd_resp */
    365 	u8 sd_frag_id;
    366 
    367 	struct wpabuf *sd_rx_resp; /* Reassembled SD response */
    368 	u16 sd_rx_update_indic;
    369 
    370 	/* P2P Invitation data */
    371 	enum p2p_invite_role inv_role;
    372 	u8 inv_bssid[ETH_ALEN];
    373 	int inv_bssid_set;
    374 	u8 inv_ssid[32];
    375 	size_t inv_ssid_len;
    376 	u8 inv_sa[ETH_ALEN];
    377 	u8 inv_group_bssid[ETH_ALEN];
    378 	u8 *inv_group_bssid_ptr;
    379 	u8 inv_go_dev_addr[ETH_ALEN];
    380 	u8 inv_status;
    381 	int inv_op_freq;
    382 	int inv_persistent;
    383 
    384 	enum p2p_discovery_type find_type;
    385 	unsigned int last_p2p_find_timeout;
    386 	u8 last_prog_scan_class;
    387 	u8 last_prog_scan_chan;
    388 	int p2p_scan_running;
    389 	enum p2p_after_scan {
    390 		P2P_AFTER_SCAN_NOTHING,
    391 		P2P_AFTER_SCAN_LISTEN,
    392 		P2P_AFTER_SCAN_CONNECT
    393 	} start_after_scan;
    394 	u8 after_scan_peer[ETH_ALEN];
    395 	struct p2p_pending_action_tx *after_scan_tx;
    396 	unsigned int after_scan_tx_in_progress:1;
    397 
    398 	/* Requested device types for find/search */
    399 	unsigned int num_req_dev_types;
    400 	u8 *req_dev_types;
    401 	u8 *find_dev_id;
    402 	u8 find_dev_id_buf[ETH_ALEN];
    403 
    404 	struct os_time find_start; /* time of last p2p_find start */
    405 
    406 	struct p2p_group **groups;
    407 	size_t num_groups;
    408 
    409 	struct p2p_device *pending_client_disc_go;
    410 	u8 pending_client_disc_addr[ETH_ALEN];
    411 	u8 pending_dev_disc_dialog_token;
    412 	u8 pending_dev_disc_addr[ETH_ALEN];
    413 	int pending_dev_disc_freq;
    414 	unsigned int pending_client_disc_freq;
    415 
    416 	int ext_listen_only;
    417 	unsigned int ext_listen_period;
    418 	unsigned int ext_listen_interval;
    419 	unsigned int ext_listen_interval_sec;
    420 	unsigned int ext_listen_interval_usec;
    421 
    422 	u8 peer_filter[ETH_ALEN];
    423 
    424 	int cross_connect;
    425 
    426 	int best_freq_24;
    427 	int best_freq_5;
    428 	int best_freq_overall;
    429 	int own_freq_preference;
    430 
    431 	/**
    432 	 * wps_vendor_ext - WPS Vendor Extensions to add
    433 	 */
    434 	struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
    435 
    436 	/*
    437 	 * user_initiated_pd - Whether a PD request is user initiated or not.
    438 	 */
    439 	u8 user_initiated_pd;
    440 
    441 	/*
    442 	 * Keep track of which peer a given PD request was sent to.
    443 	 * Used to raise a timeout alert in case there is no response.
    444 	 */
    445 	u8 pending_pd_devaddr[ETH_ALEN];
    446 
    447 	/*
    448 	 * Retry counter for provision discovery requests when issued
    449 	 * in IDLE state.
    450 	 */
    451 	int pd_retries;
    452 
    453 	u8 go_timeout;
    454 	u8 client_timeout;
    455 
    456 	/* Extra delay in milliseconds between search iterations */
    457 	unsigned int search_delay;
    458 	int in_search_delay;
    459 
    460 #ifdef CONFIG_WIFI_DISPLAY
    461 	struct wpabuf *wfd_ie_beacon;
    462 	struct wpabuf *wfd_ie_probe_req;
    463 	struct wpabuf *wfd_ie_probe_resp;
    464 	struct wpabuf *wfd_ie_assoc_req;
    465 	struct wpabuf *wfd_ie_invitation;
    466 	struct wpabuf *wfd_ie_prov_disc_req;
    467 	struct wpabuf *wfd_ie_prov_disc_resp;
    468 	struct wpabuf *wfd_ie_go_neg;
    469 	struct wpabuf *wfd_dev_info;
    470 	struct wpabuf *wfd_assoc_bssid;
    471 	struct wpabuf *wfd_coupled_sink_info;
    472 #endif /* CONFIG_WIFI_DISPLAY */
    473 };
    474 
    475 /**
    476  * struct p2p_message - Parsed P2P message (or P2P IE)
    477  */
    478 struct p2p_message {
    479 	struct wpabuf *p2p_attributes;
    480 	struct wpabuf *wps_attributes;
    481 	struct wpabuf *wfd_subelems;
    482 
    483 	u8 dialog_token;
    484 
    485 	const u8 *capability;
    486 	const u8 *go_intent;
    487 	const u8 *status;
    488 	const u8 *listen_channel;
    489 	const u8 *operating_channel;
    490 	const u8 *channel_list;
    491 	u8 channel_list_len;
    492 	const u8 *config_timeout;
    493 	const u8 *intended_addr;
    494 	const u8 *group_bssid;
    495 	const u8 *invitation_flags;
    496 
    497 	const u8 *group_info;
    498 	size_t group_info_len;
    499 
    500 	const u8 *group_id;
    501 	size_t group_id_len;
    502 
    503 	const u8 *device_id;
    504 
    505 	const u8 *manageability;
    506 
    507 	const u8 *noa;
    508 	size_t noa_len;
    509 
    510 	const u8 *ext_listen_timing;
    511 
    512 	const u8 *minor_reason_code;
    513 
    514 	/* P2P Device Info */
    515 	const u8 *p2p_device_info;
    516 	size_t p2p_device_info_len;
    517 	const u8 *p2p_device_addr;
    518 	const u8 *pri_dev_type;
    519 	u8 num_sec_dev_types;
    520 	char device_name[33];
    521 	u16 config_methods;
    522 
    523 	/* WPS IE */
    524 	u16 dev_password_id;
    525 	u16 wps_config_methods;
    526 	const u8 *wps_pri_dev_type;
    527 	const u8 *wps_sec_dev_type_list;
    528 	size_t wps_sec_dev_type_list_len;
    529 	const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
    530 	size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
    531 	const u8 *manufacturer;
    532 	size_t manufacturer_len;
    533 	const u8 *model_name;
    534 	size_t model_name_len;
    535 	const u8 *model_number;
    536 	size_t model_number_len;
    537 	const u8 *serial_number;
    538 	size_t serial_number_len;
    539 
    540 	/* DS Parameter Set IE */
    541 	const u8 *ds_params;
    542 
    543 	/* SSID IE */
    544 	const u8 *ssid;
    545 };
    546 
    547 
    548 #define P2P_MAX_GROUP_ENTRIES 50
    549 
    550 struct p2p_group_info {
    551 	unsigned int num_clients;
    552 	struct p2p_client_info {
    553 		const u8 *p2p_device_addr;
    554 		const u8 *p2p_interface_addr;
    555 		u8 dev_capab;
    556 		u16 config_methods;
    557 		const u8 *pri_dev_type;
    558 		u8 num_sec_dev_types;
    559 		const u8 *sec_dev_types;
    560 		const char *dev_name;
    561 		size_t dev_name_len;
    562 	} client[P2P_MAX_GROUP_ENTRIES];
    563 };
    564 
    565 
    566 /* p2p_utils.c */
    567 int p2p_random(char *buf, size_t len);
    568 int p2p_channel_to_freq(int op_class, int channel);
    569 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
    570 void p2p_channels_intersect(const struct p2p_channels *a,
    571 			    const struct p2p_channels *b,
    572 			    struct p2p_channels *res);
    573 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
    574 			  u8 channel);
    575 #ifdef ANDROID_P2P
    576 size_t p2p_copy_reg_class(struct p2p_reg_class *dc, struct p2p_reg_class *sc);
    577 #endif
    578 
    579 /* p2p_parse.c */
    580 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
    581 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
    582 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
    583 void p2p_parse_free(struct p2p_message *msg);
    584 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
    585 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
    586 			 struct p2p_group_info *info);
    587 
    588 /* p2p_build.c */
    589 
    590 struct p2p_noa_desc {
    591 	u8 count_type;
    592 	u32 duration;
    593 	u32 interval;
    594 	u32 start_time;
    595 };
    596 
    597 /* p2p_group.c */
    598 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
    599 u8 p2p_group_presence_req(struct p2p_group *group,
    600 			  const u8 *client_interface_addr,
    601 			  const u8 *noa, size_t noa_len);
    602 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
    603 				size_t group_id_len);
    604 void p2p_group_update_ies(struct p2p_group *group);
    605 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
    606 
    607 
    608 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
    609 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
    610 				   u8 dialog_token);
    611 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
    612 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
    613 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
    614 			     struct p2p_device *peer);
    615 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
    616 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
    617 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
    618 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
    619 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
    620 				u8 reg_class, u8 channel);
    621 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
    622 				   u8 reg_class, u8 channel);
    623 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
    624 			      struct p2p_channels *chan);
    625 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
    626 				u8 client_timeout);
    627 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
    628 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
    629 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
    630 			  const u8 *ssid, size_t ssid_len);
    631 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
    632 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
    633 		     struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
    634 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
    635 				   u16 interval);
    636 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
    637 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
    638 		      int all_attr);
    639 
    640 /* p2p_sd.c */
    641 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
    642 					 struct p2p_device *dev);
    643 void p2p_free_sd_queries(struct p2p_data *p2p);
    644 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
    645 			    const u8 *data, size_t len, int rx_freq);
    646 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
    647 			     const u8 *data, size_t len, int rx_freq);
    648 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
    649 			     const u8 *data, size_t len, int rx_freq);
    650 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
    651 			      const u8 *data, size_t len, int rx_freq);
    652 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
    653 
    654 /* p2p_go_neg.c */
    655 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
    656 			    struct p2p_device *dev,
    657 			    const u8 *channel_list, size_t channel_list_len);
    658 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
    659 			    const u8 *data, size_t len, int rx_freq);
    660 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
    661 			     const u8 *data, size_t len, int rx_freq);
    662 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
    663 			     const u8 *data, size_t len);
    664 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
    665 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
    666 void p2p_reselect_channel(struct p2p_data *p2p,
    667 			  struct p2p_channels *intersection);
    668 
    669 /* p2p_pd.c */
    670 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
    671 			       const u8 *data, size_t len, int rx_freq);
    672 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
    673 				const u8 *data, size_t len);
    674 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
    675 			   int join, int force_freq);
    676 void p2p_reset_pending_pd(struct p2p_data *p2p);
    677 
    678 /* p2p_invitation.c */
    679 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
    680 				const u8 *data, size_t len, int rx_freq);
    681 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
    682 				 const u8 *data, size_t len);
    683 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
    684 		    const u8 *go_dev_addr);
    685 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
    686 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
    687 
    688 /* p2p_dev_disc.c */
    689 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
    690 			      const u8 *data, size_t len, int rx_freq);
    691 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
    692 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
    693 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
    694 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
    695 			       const u8 *data, size_t len);
    696 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
    697 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
    698 			     const u8 *data, size_t len, int rx_freq);
    699 
    700 /* p2p.c */
    701 void p2p_set_state(struct p2p_data *p2p, int new_state);
    702 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
    703 		     unsigned int usec);
    704 void p2p_clear_timeout(struct p2p_data *p2p);
    705 void p2p_continue_find(struct p2p_data *p2p);
    706 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
    707 						const u8 *addr,
    708 						struct p2p_message *msg);
    709 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
    710 		      struct p2p_device *dev, struct p2p_message *msg);
    711 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
    712 		   struct os_time *rx_time, int level, const u8 *ies,
    713 		   size_t ies_len, int scan_res);
    714 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
    715 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
    716 					     const u8 *addr);
    717 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
    718 		       int status);
    719 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
    720 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
    721 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
    722 			size_t num_req_dev_type);
    723 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
    724 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
    725 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
    726 		    const u8 *src, const u8 *bssid, const u8 *buf,
    727 		    size_t len, unsigned int wait_time);
    728 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
    729 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
    730 			unsigned int force_freq, unsigned int pref_freq);
    731 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
    732 PRINTF_FORMAT(2, 3);
    733 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
    734 PRINTF_FORMAT(2, 3);
    735 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
    736 PRINTF_FORMAT(2, 3);
    737 
    738 #endif /* P2P_I_H */
    739