• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 	/* Override option for preferred operating channel in GO Negotiation */
558 	u8 override_pref_op_class;
559 	u8 override_pref_channel;
560 };
561 
562 /**
563  * struct p2p_message - Parsed P2P message (or P2P IE)
564  */
565 struct p2p_message {
566 	struct wpabuf *p2p_attributes;
567 	struct wpabuf *wps_attributes;
568 	struct wpabuf *wfd_subelems;
569 
570 	u8 dialog_token;
571 
572 	const u8 *capability;
573 	const u8 *go_intent;
574 	const u8 *status;
575 	const u8 *listen_channel;
576 	const u8 *operating_channel;
577 	const u8 *channel_list;
578 	u8 channel_list_len;
579 	const u8 *config_timeout;
580 	const u8 *intended_addr;
581 	const u8 *group_bssid;
582 	const u8 *invitation_flags;
583 
584 	const u8 *group_info;
585 	size_t group_info_len;
586 
587 	const u8 *group_id;
588 	size_t group_id_len;
589 
590 	const u8 *device_id;
591 
592 	const u8 *manageability;
593 
594 	const u8 *noa;
595 	size_t noa_len;
596 
597 	const u8 *ext_listen_timing;
598 
599 	const u8 *minor_reason_code;
600 
601 	const u8 *oob_go_neg_channel;
602 
603 	/* P2P Device Info */
604 	const u8 *p2p_device_info;
605 	size_t p2p_device_info_len;
606 	const u8 *p2p_device_addr;
607 	const u8 *pri_dev_type;
608 	u8 num_sec_dev_types;
609 	char device_name[WPS_DEV_NAME_MAX_LEN + 1];
610 	u16 config_methods;
611 
612 	/* WPS IE */
613 	u16 dev_password_id;
614 	int dev_password_id_present;
615 	u16 wps_config_methods;
616 	const u8 *wps_pri_dev_type;
617 	const u8 *wps_sec_dev_type_list;
618 	size_t wps_sec_dev_type_list_len;
619 	const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
620 	size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
621 	const u8 *manufacturer;
622 	size_t manufacturer_len;
623 	const u8 *model_name;
624 	size_t model_name_len;
625 	const u8 *model_number;
626 	size_t model_number_len;
627 	const u8 *serial_number;
628 	size_t serial_number_len;
629 	const u8 *oob_dev_password;
630 	size_t oob_dev_password_len;
631 
632 	/* DS Parameter Set IE */
633 	const u8 *ds_params;
634 
635 	/* SSID IE */
636 	const u8 *ssid;
637 
638 	/* P2PS */
639 	u8 service_hash_count;
640 	const u8 *service_hash;
641 
642 	const u8 *session_info;
643 	size_t session_info_len;
644 
645 	const u8 *conn_cap;
646 
647 	const u8 *adv_id;
648 	const u8 *adv_mac;
649 
650 	const u8 *adv_service_instance;
651 	size_t adv_service_instance_len;
652 
653 	const u8 *session_id;
654 	const u8 *session_mac;
655 
656 	const u8 *feature_cap;
657 	size_t feature_cap_len;
658 
659 	const u8 *persistent_dev;
660 	const u8 *persistent_ssid;
661 	size_t persistent_ssid_len;
662 
663 	const u8 *pref_freq_list;
664 	size_t pref_freq_list_len;
665 };
666 
667 
668 #define P2P_MAX_GROUP_ENTRIES 50
669 
670 struct p2p_group_info {
671 	unsigned int num_clients;
672 	struct p2p_client_info {
673 		const u8 *p2p_device_addr;
674 		const u8 *p2p_interface_addr;
675 		u8 dev_capab;
676 		u16 config_methods;
677 		const u8 *pri_dev_type;
678 		u8 num_sec_dev_types;
679 		const u8 *sec_dev_types;
680 		const char *dev_name;
681 		size_t dev_name_len;
682 	} client[P2P_MAX_GROUP_ENTRIES];
683 };
684 
685 
686 /* p2p_utils.c */
687 int p2p_random(char *buf, size_t len);
688 int p2p_channel_to_freq(int op_class, int channel);
689 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
690 void p2p_channels_intersect(const struct p2p_channels *a,
691 			    const struct p2p_channels *b,
692 			    struct p2p_channels *res);
693 void p2p_channels_union_inplace(struct p2p_channels *res,
694 				const struct p2p_channels *b);
695 void p2p_channels_union(const struct p2p_channels *a,
696 			const struct p2p_channels *b,
697 			struct p2p_channels *res);
698 void p2p_channels_remove_freqs(struct p2p_channels *chan,
699 			       const struct wpa_freq_range_list *list);
700 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
701 			  u8 channel);
702 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
703 		       const struct p2p_channels *chan);
704 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
705 		       u8 *op_class, u8 *op_channel);
706 int p2p_channel_random_social(struct p2p_channels *chans, u8 *op_class,
707 			      u8 *op_channel);
708 
709 /* p2p_parse.c */
710 void p2p_copy_filter_devname(char *dst, size_t dst_len,
711 			     const void *src, size_t src_len);
712 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
713 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
714 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
715 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
716 			   size_t p2p_len, struct p2p_message *msg);
717 void p2p_parse_free(struct p2p_message *msg);
718 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
719 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
720 			 struct p2p_group_info *info);
721 
722 /* p2p_build.c */
723 
724 struct p2p_noa_desc {
725 	u8 count_type;
726 	u32 duration;
727 	u32 interval;
728 	u32 start_time;
729 };
730 
731 /* p2p_group.c */
732 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
733 u8 p2p_group_presence_req(struct p2p_group *group,
734 			  const u8 *client_interface_addr,
735 			  const u8 *noa, size_t noa_len);
736 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
737 				size_t group_id_len);
738 void p2p_group_update_ies(struct p2p_group *group);
739 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
740 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
741 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
742 			    int max_clients);
743 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
744 int p2p_group_get_freq(struct p2p_group *group);
745 
746 
747 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
748 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
749 				   u8 dialog_token);
750 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
751 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
752 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
753 			     struct p2p_device *peer);
754 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
755 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
756 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
757 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
758 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
759 				u8 reg_class, u8 channel);
760 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
761 				   u8 reg_class, u8 channel);
762 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
763 			      struct p2p_channels *chan);
764 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
765 				u8 client_timeout);
766 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
767 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
768 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
769 			  const u8 *ssid, size_t ssid_len);
770 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
771 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
772 		     struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
773 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
774 				   u16 interval);
775 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
776 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
777 				    u8 oper_class, u8 channel,
778 				    enum p2p_role_indication role);
779 void p2p_buf_add_service_hash(struct wpabuf *buf, struct p2p_data *p2p);
780 void p2p_buf_add_session_info(struct wpabuf *buf, const char *info);
781 void p2p_buf_add_connection_capability(struct wpabuf *buf, u8 connection_cap);
782 void p2p_buf_add_advertisement_id(struct wpabuf *buf, u32 id, const u8 *mac);
783 void p2p_buf_add_service_instance(struct wpabuf *buf, struct p2p_data *p2p,
784 				  u8 count, const u8 *hash,
785 				  struct p2ps_advertisement *adv_list);
786 void p2p_buf_add_session_id(struct wpabuf *buf, u32 id, const u8 *mac);
787 void p2p_buf_add_feature_capability(struct wpabuf *buf, u16 len,
788 				    const u8 *mask);
789 void p2p_buf_add_persistent_group_info(struct wpabuf *buf, const u8 *dev_addr,
790 				       const u8 *ssid, size_t ssid_len);
791 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
792 		     int all_attr);
793 void p2p_buf_add_pref_channel_list(struct wpabuf *buf,
794 				   const u32 *preferred_freq_list, u32 size);
795 
796 /* p2p_sd.c */
797 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
798 					 struct p2p_device *dev);
799 void p2p_free_sd_queries(struct p2p_data *p2p);
800 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
801 			    const u8 *data, size_t len, int rx_freq);
802 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
803 			     const u8 *data, size_t len, int rx_freq);
804 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
805 			     const u8 *data, size_t len, int rx_freq);
806 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
807 			      const u8 *data, size_t len, int rx_freq);
808 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
809 
810 /* p2p_go_neg.c */
811 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
812 			    struct p2p_device *dev,
813 			    const u8 *channel_list, size_t channel_list_len);
814 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
815 			    const u8 *data, size_t len, int rx_freq);
816 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
817 			     const u8 *data, size_t len, int rx_freq);
818 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
819 			     const u8 *data, size_t len);
820 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
821 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
822 void p2p_reselect_channel(struct p2p_data *p2p,
823 			  struct p2p_channels *intersection);
824 void p2p_check_pref_chan(struct p2p_data *p2p, int go,
825 			 struct p2p_device *dev, struct p2p_message *msg);
826 
827 /* p2p_pd.c */
828 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
829 			       const u8 *data, size_t len, int rx_freq);
830 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
831 				const u8 *data, size_t len);
832 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
833 			   int join, int force_freq);
834 void p2p_reset_pending_pd(struct p2p_data *p2p);
835 void p2ps_prov_free(struct p2p_data *p2p);
836 
837 /* p2p_invitation.c */
838 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
839 				const u8 *data, size_t len, int rx_freq);
840 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
841 				 const u8 *data, size_t len);
842 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
843 		    const u8 *go_dev_addr, int dev_pw_id);
844 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
845 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
846 
847 /* p2p_dev_disc.c */
848 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
849 			      const u8 *data, size_t len, int rx_freq);
850 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
851 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
852 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
853 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
854 			       const u8 *data, size_t len);
855 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
856 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
857 			     const u8 *data, size_t len, int rx_freq);
858 
859 /* p2p.c */
860 void p2p_set_state(struct p2p_data *p2p, int new_state);
861 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
862 		     unsigned int usec);
863 void p2p_clear_timeout(struct p2p_data *p2p);
864 void p2p_continue_find(struct p2p_data *p2p);
865 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
866 						const u8 *addr,
867 						struct p2p_message *msg);
868 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
869 		      struct p2p_device *dev, struct p2p_message *msg);
870 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
871 		   struct os_reltime *rx_time, int level, const u8 *ies,
872 		   size_t ies_len, int scan_res);
873 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
874 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
875 					     const u8 *addr);
876 void p2p_go_neg_failed(struct p2p_data *p2p, int status);
877 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
878 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
879 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
880 			size_t num_req_dev_type);
881 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
882 					 const u8 *query_hash,
883 					 u8 query_count);
884 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
885 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
886 		    const u8 *src, const u8 *bssid, const u8 *buf,
887 		    size_t len, unsigned int wait_time);
888 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
889 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
890 			unsigned int force_freq, unsigned int pref_freq,
891 			int go);
892 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx);
893 int p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev,
894 			  u8 *status);
895 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
896 PRINTF_FORMAT(2, 3);
897 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
898 PRINTF_FORMAT(2, 3);
899 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
900 PRINTF_FORMAT(2, 3);
901 
902 #endif /* P2P_I_H */
903