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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  * @p2p_lo_started: Whether P2P Listen Offload is started
1559  * Returns: value indicating the type and status of the probe request
1560  */
1561 enum p2p_probe_req_status
1562 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1563 		 const u8 *bssid, const u8 *ie, size_t ie_len,
1564 		 unsigned int rx_freq, int p2p_lo_started);
1565 
1566 /**
1567  * p2p_rx_action - Report received Action frame
1568  * @p2p: P2P module context from p2p_init()
1569  * @da: Destination address of the received Action frame
1570  * @sa: Source address of the received Action frame
1571  * @bssid: Address 3 of the received Action frame
1572  * @category: Category of the received Action frame
1573  * @data: Action frame body after the Category field
1574  * @len: Length of the data buffer in octets
1575  * @freq: Frequency (in MHz) on which the frame was received
1576  */
1577 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1578 		   const u8 *bssid, u8 category,
1579 		   const u8 *data, size_t len, int freq);
1580 
1581 /**
1582  * p2p_scan_res_handler - Indicate a P2P scan results
1583  * @p2p: P2P module context from p2p_init()
1584  * @bssid: BSSID of the scan result
1585  * @freq: Frequency of the channel on which the device was found in MHz
1586  * @rx_time: Time when the result was received
1587  * @level: Signal level (signal strength of the received Beacon/Probe Response
1588  *	frame)
1589  * @ies: Pointer to IEs from the scan result
1590  * @ies_len: Length of the ies buffer
1591  * Returns: 0 to continue or 1 to stop scan result indication
1592  *
1593  * This function is called to indicate a scan result entry with P2P IE from a
1594  * scan requested with struct p2p_config::p2p_scan(). This can be called during
1595  * the actual scan process (i.e., whenever a new device is found) or as a
1596  * sequence of calls after the full scan has been completed. The former option
1597  * can result in optimized operations, but may not be supported by all
1598  * driver/firmware designs. The ies buffer need to include at least the P2P IE,
1599  * but it is recommended to include all IEs received from the device. The
1600  * caller does not need to check that the IEs contain a P2P IE before calling
1601  * this function since frames will be filtered internally if needed.
1602  *
1603  * This function will return 1 if it wants to stop scan result iteration (and
1604  * scan in general if it is still in progress). This is used to allow faster
1605  * start of a pending operation, e.g., to start a pending GO negotiation.
1606  */
1607 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
1608 			 struct os_reltime *rx_time, int level, const u8 *ies,
1609 			 size_t ies_len);
1610 
1611 /**
1612  * p2p_scan_res_handled - Indicate end of scan results
1613  * @p2p: P2P module context from p2p_init()
1614  *
1615  * This function is called to indicate that all P2P scan results from a scan
1616  * have been reported with zero or more calls to p2p_scan_res_handler(). This
1617  * function must be called as a response to successful
1618  * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler()
1619  * calls stopped iteration.
1620  */
1621 void p2p_scan_res_handled(struct p2p_data *p2p);
1622 
1623 enum p2p_send_action_result {
1624 	P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
1625 	P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */,
1626 	P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
1627 };
1628 
1629 /**
1630  * p2p_send_action_cb - Notify TX status of an Action frame
1631  * @p2p: P2P module context from p2p_init()
1632  * @freq: Channel frequency in MHz
1633  * @dst: Destination MAC address (Address 1)
1634  * @src: Source MAC address (Address 2)
1635  * @bssid: BSSID (Address 3)
1636  * @result: Result of the transmission attempt
1637  *
1638  * This function is used to indicate the result of an Action frame transmission
1639  * that was requested with struct p2p_config::send_action() callback.
1640  */
1641 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
1642 			const u8 *src, const u8 *bssid,
1643 			enum p2p_send_action_result result);
1644 
1645 /**
1646  * p2p_listen_cb - Indicate the start of a requested Listen state
1647  * @p2p: P2P module context from p2p_init()
1648  * @freq: Listen channel frequency in MHz
1649  * @duration: Duration for the Listen state in milliseconds
1650  *
1651  * This function is used to indicate that a Listen state requested with
1652  * struct p2p_config::start_listen() callback has started.
1653  */
1654 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
1655 		   unsigned int duration);
1656 
1657 /**
1658  * p2p_listen_end - Indicate the end of a requested Listen state
1659  * @p2p: P2P module context from p2p_init()
1660  * @freq: Listen channel frequency in MHz
1661  * Returns: 0 if no operations were started, 1 if an operation was started
1662  *
1663  * This function is used to indicate that a Listen state requested with
1664  * struct p2p_config::start_listen() callback has ended.
1665  */
1666 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq);
1667 
1668 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
1669 		      const u8 *ie, size_t ie_len);
1670 
1671 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
1672 			const u8 *ie, size_t ie_len);
1673 
1674 
1675 /* Per-group P2P state for GO */
1676 
1677 struct p2p_group;
1678 
1679 /**
1680  * struct p2p_group_config - P2P group configuration
1681  *
1682  * This configuration is provided to the P2P module during initialization of
1683  * the per-group information with p2p_group_init().
1684  */
1685 struct p2p_group_config {
1686 	/**
1687 	 * persistent_group - Whether the group is persistent
1688 	 * 0 = not a persistent group
1689 	 * 1 = persistent group without persistent reconnect
1690 	 * 2 = persistent group with persistent reconnect
1691 	 */
1692 	int persistent_group;
1693 
1694 	/**
1695 	 * interface_addr - P2P Interface Address of the group
1696 	 */
1697 	u8 interface_addr[ETH_ALEN];
1698 
1699 	/**
1700 	 * max_clients - Maximum number of clients in the group
1701 	 */
1702 	unsigned int max_clients;
1703 
1704 	/**
1705 	 * ssid - Group SSID
1706 	 */
1707 	u8 ssid[SSID_MAX_LEN];
1708 
1709 	/**
1710 	 * ssid_len - Length of SSID
1711 	 */
1712 	size_t ssid_len;
1713 
1714 	/**
1715 	 * freq - Operating channel of the group
1716 	 */
1717 	int freq;
1718 
1719 	/**
1720 	 * ip_addr_alloc - Whether IP address allocation within 4-way handshake
1721 	 *	is supported
1722 	 */
1723 	int ip_addr_alloc;
1724 
1725 	/**
1726 	 * cb_ctx - Context to use with callback functions
1727 	 */
1728 	void *cb_ctx;
1729 
1730 	/**
1731 	 * ie_update - Notification of IE update
1732 	 * @ctx: Callback context from cb_ctx
1733 	 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change
1734 	 * @proberesp_ies: P2P Ie for Probe Response frames
1735 	 *
1736 	 * P2P module uses this callback function to notify whenever the P2P IE
1737 	 * in Beacon or Probe Response frames should be updated based on group
1738 	 * events.
1739 	 *
1740 	 * The callee is responsible for freeing the returned buffer(s) with
1741 	 * wpabuf_free().
1742 	 */
1743 	void (*ie_update)(void *ctx, struct wpabuf *beacon_ies,
1744 			  struct wpabuf *proberesp_ies);
1745 
1746 	/**
1747 	 * idle_update - Notification of changes in group idle state
1748 	 * @ctx: Callback context from cb_ctx
1749 	 * @idle: Whether the group is idle (no associated stations)
1750 	 */
1751 	void (*idle_update)(void *ctx, int idle);
1752 };
1753 
1754 /**
1755  * p2p_group_init - Initialize P2P group
1756  * @p2p: P2P module context from p2p_init()
1757  * @config: P2P group configuration (will be freed by p2p_group_deinit())
1758  * Returns: Pointer to private data or %NULL on failure
1759  *
1760  * This function is used to initialize per-group P2P module context. Currently,
1761  * this is only used to manage GO functionality and P2P clients do not need to
1762  * create an instance of this per-group information.
1763  */
1764 struct p2p_group * p2p_group_init(struct p2p_data *p2p,
1765 				  struct p2p_group_config *config);
1766 
1767 /**
1768  * p2p_group_deinit - Deinitialize P2P group
1769  * @group: P2P group context from p2p_group_init()
1770  */
1771 void p2p_group_deinit(struct p2p_group *group);
1772 
1773 /**
1774  * p2p_group_notif_assoc - Notification of P2P client association with GO
1775  * @group: P2P group context from p2p_group_init()
1776  * @addr: Interface address of the P2P client
1777  * @ie: IEs from the (Re)association Request frame
1778  * @len: Length of the ie buffer in octets
1779  * Returns: 0 on success, -1 on failure
1780  */
1781 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
1782 			  const u8 *ie, size_t len);
1783 
1784 /**
1785  * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response
1786  * @group: P2P group context from p2p_group_init()
1787  * @status: Status value (P2P_SC_SUCCESS if association succeeded)
1788  * Returns: P2P IE for (Re)association Response or %NULL on failure
1789  *
1790  * The caller is responsible for freeing the returned buffer with
1791  * wpabuf_free().
1792  */
1793 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status);
1794 
1795 /**
1796  * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO
1797  * @group: P2P group context from p2p_group_init()
1798  * @addr: Interface address of the P2P client
1799  */
1800 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr);
1801 
1802 /**
1803  * p2p_group_notif_formation_done - Notification of completed group formation
1804  * @group: P2P group context from p2p_group_init()
1805  */
1806 void p2p_group_notif_formation_done(struct p2p_group *group);
1807 
1808 /**
1809  * p2p_group_notif_noa - Notification of NoA change
1810  * @group: P2P group context from p2p_group_init()
1811  * @noa: Notice of Absence attribute payload, %NULL if none
1812  * @noa_len: Length of noa buffer in octets
1813  * Returns: 0 on success, -1 on failure
1814  *
1815  * Notify the P2P group management about a new NoA contents. This will be
1816  * inserted into the P2P IEs in Beacon and Probe Response frames with rest of
1817  * the group information.
1818  */
1819 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
1820 			size_t noa_len);
1821 
1822 /**
1823  * p2p_group_match_dev_type - Match device types in group with requested type
1824  * @group: P2P group context from p2p_group_init()
1825  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1826  * Returns: 1 on match, 0 on mismatch
1827  *
1828  * This function can be used to match the Requested Device Type attribute in
1829  * WPS IE with the device types of a group member for deciding whether a GO
1830  * should reply to a Probe Request frame. Match will be reported if the WPS IE
1831  * is not requested any specific device type.
1832  */
1833 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);
1834 
1835 /**
1836  * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id
1837  */
1838 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p);
1839 
1840 /**
1841  * p2p_group_go_discover - Send GO Discoverability Request to a group client
1842  * @group: P2P group context from p2p_group_init()
1843  * Returns: 0 on success (frame scheduled); -1 if client was not found
1844  */
1845 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id,
1846 			  const u8 *searching_dev, int rx_freq);
1847 
1848 
1849 /* Generic helper functions */
1850 
1851 /**
1852  * p2p_ie_text - Build text format description of P2P IE
1853  * @p2p_ie: P2P IE
1854  * @buf: Buffer for returning text
1855  * @end: Pointer to the end of the buf area
1856  * Returns: Number of octets written to the buffer or -1 on failure
1857  *
1858  * This function can be used to parse P2P IE contents into text format
1859  * field=value lines.
1860  */
1861 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end);
1862 
1863 /**
1864  * p2p_scan_result_text - Build text format description of P2P IE
1865  * @ies: Information elements from scan results
1866  * @ies_len: ies buffer length in octets
1867  * @buf: Buffer for returning text
1868  * @end: Pointer to the end of the buf area
1869  * Returns: Number of octets written to the buffer or -1 on failure
1870  *
1871  * This function can be used to parse P2P IE contents into text format
1872  * field=value lines.
1873  */
1874 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);
1875 
1876 /**
1877  * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated
1878  * P2P IE
1879  * @p2p_ie: P2P IE
1880  * @dev_addr: Buffer for returning P2P Device Address
1881  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
1882  */
1883 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr);
1884 
1885 /**
1886  * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s)
1887  * @ies: Information elements from scan results
1888  * @ies_len: ies buffer length in octets
1889  * @dev_addr: Buffer for returning P2P Device Address
1890  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
1891  */
1892 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr);
1893 
1894 /**
1895  * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame
1896  * @p2p: P2P module context from p2p_init()
1897  * @bssid: BSSID
1898  * @buf: Buffer for writing the P2P IE
1899  * @len: Maximum buf length in octets
1900  * @p2p_group: Whether this is for association with a P2P GO
1901  * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none
1902  * Returns: Number of octets written into buf or -1 on failure
1903  */
1904 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1905 		     size_t len, int p2p_group, struct wpabuf *p2p_ie);
1906 
1907 /**
1908  * p2p_scan_ie - Build P2P IE for Probe Request
1909  * @p2p: P2P module context from p2p_init()
1910  * @ies: Buffer for writing P2P IE
1911  * @dev_id: Device ID to search for or %NULL for any
1912  * @bands: Frequency bands used in the scan (enum wpa_radio_work_band bitmap)
1913  */
1914 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
1915 		 unsigned int bands);
1916 
1917 /**
1918  * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie
1919  * @p2p: P2P module context from p2p_init()
1920  * Returns: Number of octets that p2p_scan_ie() may add to the buffer
1921  */
1922 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p);
1923 
1924 /**
1925  * p2p_go_params - Generate random P2P group parameters
1926  * @p2p: P2P module context from p2p_init()
1927  * @params: Buffer for parameters
1928  * Returns: 0 on success, -1 on failure
1929  */
1930 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params);
1931 
1932 /**
1933  * p2p_get_group_capab - Get Group Capability from P2P IE data
1934  * @p2p_ie: P2P IE(s) contents
1935  * Returns: Group Capability
1936  */
1937 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie);
1938 
1939 /**
1940  * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection
1941  * @p2p_ie: P2P IE(s) contents
1942  * Returns: 0 if cross connection is allow, 1 if not
1943  */
1944 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie);
1945 
1946 /**
1947  * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data
1948  * @p2p_ie: P2P IE(s) contents
1949  * Returns: Pointer to P2P Device Address or %NULL if not included
1950  */
1951 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);
1952 
1953 /**
1954  * p2p_get_peer_info - Get P2P peer information
1955  * @p2p: P2P module context from p2p_init()
1956  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
1957  * @next: Whether to select the peer entry following the one indicated by addr
1958  * Returns: Pointer to peer info or %NULL if not found
1959  */
1960 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
1961 					       const u8 *addr, int next);
1962 
1963 /**
1964  * p2p_get_peer_info_txt - Get internal P2P peer information in text format
1965  * @info: Pointer to P2P peer info from p2p_get_peer_info()
1966  * @buf: Buffer for returning text
1967  * @buflen: Maximum buffer length
1968  * Returns: Number of octets written to the buffer or -1 on failure
1969  *
1970  * Note: This information is internal to the P2P module and subject to change.
1971  * As such, this should not really be used by external programs for purposes
1972  * other than debugging.
1973  */
1974 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
1975 			  char *buf, size_t buflen);
1976 
1977 /**
1978  * p2p_peer_known - Check whether P2P peer is known
1979  * @p2p: P2P module context from p2p_init()
1980  * @addr: P2P Device Address of the peer
1981  * Returns: 1 if the specified device is in the P2P peer table or 0 if not
1982  */
1983 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr);
1984 
1985 /**
1986  * p2p_set_client_discoverability - Set client discoverability capability
1987  * @p2p: P2P module context from p2p_init()
1988  * @enabled: Whether client discoverability will be enabled
1989  *
1990  * This function can be used to disable (and re-enable) client discoverability.
1991  * This capability is enabled by default and should not be disabled in normal
1992  * use cases, i.e., this is mainly for testing purposes.
1993  */
1994 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);
1995 
1996 /**
1997  * p2p_set_managed_oper - Set managed P2P Device operations capability
1998  * @p2p: P2P module context from p2p_init()
1999  * @enabled: Whether managed P2P Device operations will be enabled
2000  */
2001 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled);
2002 
2003 /**
2004  * p2p_config_get_random_social - Return a random social channel
2005  * @p2p: P2P config
2006  * @op_class: Selected operating class
2007  * @op_channel: Selected social channel
2008  * Returns: 0 on success, -1 on failure
2009  *
2010  * This function is used before p2p_init is called. A random social channel
2011  * from supports bands 2.4 GHz (channels 1,6,11) and 60 GHz (channel 2) is
2012  * returned on success.
2013  */
2014 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
2015 				 u8 *op_channel);
2016 
2017 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
2018 			   u8 forced);
2019 
2020 u8 p2p_get_listen_channel(struct p2p_data *p2p);
2021 
2022 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len);
2023 
2024 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
2025 			   u8 *iface_addr);
2026 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
2027 			   u8 *dev_addr);
2028 
2029 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr);
2030 
2031 /**
2032  * p2p_set_cross_connect - Set cross connection capability
2033  * @p2p: P2P module context from p2p_init()
2034  * @enabled: Whether cross connection will be enabled
2035  */
2036 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled);
2037 
2038 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr);
2039 
2040 /**
2041  * p2p_set_intra_bss_dist - Set intra BSS distribution
2042  * @p2p: P2P module context from p2p_init()
2043  * @enabled: Whether intra BSS distribution will be enabled
2044  */
2045 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled);
2046 
2047 int p2p_channels_includes_freq(const struct p2p_channels *channels,
2048 			       unsigned int freq);
2049 
2050 int p2p_channels_to_freqs(const struct p2p_channels *channels,
2051 			  int *freq_list, unsigned int max_len);
2052 
2053 /**
2054  * p2p_supported_freq - Check whether channel is supported for P2P
2055  * @p2p: P2P module context from p2p_init()
2056  * @freq: Channel frequency in MHz
2057  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2058  */
2059 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq);
2060 
2061 /**
2062  * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation
2063  * @p2p: P2P module context from p2p_init()
2064  * @freq: Channel frequency in MHz
2065  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2066  */
2067 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq);
2068 
2069 /**
2070  * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation
2071  * @p2p: P2P module context from p2p_init()
2072  * @freq: Channel frequency in MHz
2073  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2074  */
2075 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq);
2076 
2077 /**
2078  * p2p_get_pref_freq - Get channel from preferred channel list
2079  * @p2p: P2P module context from p2p_init()
2080  * @channels: List of channels
2081  * Returns: Preferred channel
2082  */
2083 unsigned int p2p_get_pref_freq(struct p2p_data *p2p,
2084 			       const struct p2p_channels *channels);
2085 
2086 void p2p_update_channel_list(struct p2p_data *p2p,
2087 			     const struct p2p_channels *chan,
2088 			     const struct p2p_channels *cli_chan);
2089 
2090 /**
2091  * p2p_set_best_channels - Update best channel information
2092  * @p2p: P2P module context from p2p_init()
2093  * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band
2094  * @freq_5: Frequency (MHz) of best channel in 5 GHz band
2095  * @freq_overall: Frequency (MHz) of best channel overall
2096  */
2097 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
2098 			   int freq_overall);
2099 
2100 /**
2101  * p2p_set_own_freq_preference - Set own preference for channel
2102  * @p2p: P2P module context from p2p_init()
2103  * @freq: Frequency (MHz) of the preferred channel or 0 if no preference
2104  *
2105  * This function can be used to set a preference on the operating channel based
2106  * on frequencies used on the other virtual interfaces that share the same
2107  * radio. If non-zero, this is used to try to avoid multi-channel concurrency.
2108  */
2109 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq);
2110 
2111 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p);
2112 
2113 /**
2114  * p2p_get_group_num_members - Get number of members in group
2115  * @group: P2P group context from p2p_group_init()
2116  * Returns: Number of members in the group
2117  */
2118 unsigned int p2p_get_group_num_members(struct p2p_group *group);
2119 
2120 /**
2121  * p2p_client_limit_reached - Check if client limit is reached
2122  * @group: P2P group context from p2p_group_init()
2123  * Returns: 1 if no of clients limit reached
2124  */
2125 int p2p_client_limit_reached(struct p2p_group *group);
2126 
2127 /**
2128  * p2p_iterate_group_members - Iterate group members
2129  * @group: P2P group context from p2p_group_init()
2130  * @next: iteration pointer, must be a pointer to a void * that is set to %NULL
2131  *	on the first call and not modified later
2132  * Returns: A P2P Device Address for each call and %NULL for no more members
2133  */
2134 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);
2135 
2136 /**
2137  * p2p_group_get_client_interface_addr - Get P2P Interface Address of a client in a group
2138  * @group: P2P group context from p2p_group_init()
2139  * @dev_addr: P2P Device Address of the client
2140  * Returns: P2P Interface Address of the client if found or %NULL if no match
2141  * found
2142  */
2143 const u8 * p2p_group_get_client_interface_addr(struct p2p_group *group,
2144 					       const u8 *dev_addr);
2145 
2146 /**
2147  * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group
2148  * @group: P2P group context from p2p_group_init()
2149  * @addr: P2P Interface Address of the client
2150  * Returns: P2P Device Address of the client if found or %NULL if no match
2151  * found
2152  */
2153 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);
2154 
2155 /**
2156  * p2p_group_is_client_connected - Check whether a specific client is connected
2157  * @group: P2P group context from p2p_group_init()
2158  * @addr: P2P Device Address of the client
2159  * Returns: 1 if client is connected or 0 if not
2160  */
2161 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr);
2162 
2163 /**
2164  * p2p_group_get_config - Get the group configuration
2165  * @group: P2P group context from p2p_group_init()
2166  * Returns: The group configuration pointer
2167  */
2168 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group);
2169 
2170 /**
2171  * p2p_loop_on_all_groups - Run the given callback on all groups
2172  * @p2p: P2P module context from p2p_init()
2173  * @group_callback: The callback function pointer
2174  * @user_data: Some user data pointer which can be %NULL
2175  *
2176  * The group_callback function can stop the iteration by returning 0.
2177  */
2178 void p2p_loop_on_all_groups(struct p2p_data *p2p,
2179 			    int (*group_callback)(struct p2p_group *group,
2180 						  void *user_data),
2181 			    void *user_data);
2182 
2183 /**
2184  * p2p_get_peer_found - Get P2P peer info structure of a found peer
2185  * @p2p: P2P module context from p2p_init()
2186  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
2187  * @next: Whether to select the peer entry following the one indicated by addr
2188  * Returns: The first P2P peer info available or %NULL if no such peer exists
2189  */
2190 const struct p2p_peer_info *
2191 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next);
2192 
2193 /**
2194  * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions
2195  * @p2p: P2P module context from p2p_init()
2196  */
2197 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);
2198 
2199 /**
2200  * p2p_add_wps_vendor_extension - Add a WPS vendor extension
2201  * @p2p: P2P module context from p2p_init()
2202  * @vendor_ext: The vendor extensions to add
2203  * Returns: 0 on success, -1 on failure
2204  *
2205  * The wpabuf structures in the array are owned by the P2P
2206  * module after this call.
2207  */
2208 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2209 				 const struct wpabuf *vendor_ext);
2210 
2211 /**
2212  * p2p_set_oper_channel - Set the P2P operating channel
2213  * @p2p: P2P module context from p2p_init()
2214  * @op_reg_class: Operating regulatory class to set
2215  * @op_channel: operating channel to set
2216  * @cfg_op_channel : Whether op_channel is hardcoded in configuration
2217  * Returns: 0 on success, -1 on failure
2218  */
2219 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
2220 			 int cfg_op_channel);
2221 
2222 /**
2223  * p2p_set_pref_chan - Set P2P preferred channel list
2224  * @p2p: P2P module context from p2p_init()
2225  * @num_pref_chan: Number of entries in pref_chan list
2226  * @pref_chan: Preferred channels or %NULL to remove preferences
2227  * Returns: 0 on success, -1 on failure
2228  */
2229 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
2230 		      const struct p2p_channel *pref_chan);
2231 
2232 /**
2233  * p2p_set_no_go_freq - Set no GO channel ranges
2234  * @p2p: P2P module context from p2p_init()
2235  * @list: Channel ranges or %NULL to remove restriction
2236  * Returns: 0 on success, -1 on failure
2237  */
2238 int p2p_set_no_go_freq(struct p2p_data *p2p,
2239 		       const struct wpa_freq_range_list *list);
2240 
2241 /**
2242  * p2p_in_progress - Check whether a P2P operation is progress
2243  * @p2p: P2P module context from p2p_init()
2244  * Returns: 0 if P2P module is idle, 1 if an operation is in progress but not
2245  * in search state, or 2 if search state operation is in progress
2246  */
2247 int p2p_in_progress(struct p2p_data *p2p);
2248 
2249 const char * p2p_wps_method_text(enum p2p_wps_method method);
2250 
2251 /**
2252  * p2p_set_config_timeout - Set local config timeouts
2253  * @p2p: P2P module context from p2p_init()
2254  * @go_timeout: Time in 10 ms units it takes to start the GO mode
2255  * @client_timeout: Time in 10 ms units it takes to start the client mode
2256  */
2257 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
2258 			    u8 client_timeout);
2259 
2260 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie);
2261 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie);
2262 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie);
2263 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie);
2264 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie);
2265 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie);
2266 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie);
2267 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie);
2268 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
2269 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem);
2270 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
2271 				  const struct wpabuf *elem);
2272 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems);
2273 
2274 /**
2275  * p2p_set_disc_int - Set min/max discoverable interval for p2p_find
2276  * @p2p: P2P module context from p2p_init()
2277  * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1
2278  * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3
2279  * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or
2280  *	-1 not to limit
2281  * Returns: 0 on success, or -1 on failure
2282  *
2283  * This function can be used to configure minDiscoverableInterval and
2284  * maxDiscoverableInterval parameters for the Listen state during device
2285  * discovery (p2p_find). A random number of 100 TU units is picked for each
2286  * Listen state iteration from [min_disc_int,max_disc_int] range.
2287  *
2288  * max_disc_tu can be used to further limit the discoverable duration. However,
2289  * it should be noted that use of this parameter is not recommended since it
2290  * would not be compliant with the P2P specification.
2291  */
2292 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
2293 		     int max_disc_tu);
2294 
2295 /**
2296  * p2p_get_state_txt - Get current P2P state for debug purposes
2297  * @p2p: P2P module context from p2p_init()
2298  * Returns: Name of the current P2P module state
2299  *
2300  * It should be noted that the P2P module state names are internal information
2301  * and subject to change at any point, i.e., this information should be used
2302  * mainly for debugging purposes.
2303  */
2304 const char * p2p_get_state_txt(struct p2p_data *p2p);
2305 
2306 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
2307 					   int client_freq,
2308 					   const u8 *go_dev_addr,
2309 					   const u8 *ssid, size_t ssid_len);
2310 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
2311 					   int client_freq,
2312 					   const u8 *go_dev_addr,
2313 					   const u8 *ssid, size_t ssid_len);
2314 
2315 struct p2p_nfc_params {
2316 	int sel;
2317 	const u8 *wsc_attr;
2318 	size_t wsc_len;
2319 	const u8 *p2p_attr;
2320 	size_t p2p_len;
2321 
2322 	enum {
2323 		NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG,
2324 		BOTH_GO, PEER_CLIENT
2325 	} next_step;
2326 	struct p2p_peer_info *peer;
2327 	u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 +
2328 		      WPS_OOB_DEVICE_PASSWORD_LEN];
2329 	size_t oob_dev_pw_len;
2330 	int go_freq;
2331 	u8 go_dev_addr[ETH_ALEN];
2332 	u8 go_ssid[SSID_MAX_LEN];
2333 	size_t go_ssid_len;
2334 };
2335 
2336 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
2337 					struct p2p_nfc_params *params);
2338 
2339 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
2340 				      int go_intent,
2341 				      const u8 *own_interface_addr);
2342 
2343 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len);
2344 
2345 void p2p_loop_on_known_peers(struct p2p_data *p2p,
2346 			     void (*peer_callback)(struct p2p_peer_info *peer,
2347 						   void *user_data),
2348 			     void *user_data);
2349 
2350 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem);
2351 
2352 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr);
2353 
2354 struct p2ps_advertisement *
2355 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id);
2356 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2357 			const char *adv_str, u8 svc_state,
2358 			u16 config_methods, const char *svc_info,
2359 			const u8 *cpt_priority);
2360 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id);
2361 void p2p_service_flush_asp(struct p2p_data *p2p);
2362 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p);
2363 
2364 /**
2365  * p2p_expire_peers - Periodic cleanup function to expire peers
2366  * @p2p: P2P module context from p2p_init()
2367  *
2368  * This is a cleanup function that the entity calling p2p_init() is
2369  * expected to call periodically to clean up expired peer entries.
2370  */
2371 void p2p_expire_peers(struct p2p_data *p2p);
2372 
2373 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
2374 				const unsigned int *pref_freq_list,
2375 				unsigned int size);
2376 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class,
2377 				   u8 chan);
2378 
2379 /**
2380  * p2p_group_get_common_freqs - Get the group common frequencies
2381  * @group: P2P group context from p2p_group_init()
2382  * @common_freqs: On return will hold the group common frequencies
2383  * @num: On return will hold the number of group common frequencies
2384  * Returns: 0 on success, -1 otherwise
2385  */
2386 int p2p_group_get_common_freqs(struct p2p_group *group, int *common_freqs,
2387 			       unsigned int *num);
2388 
2389 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
2390 					      unsigned int freq);
2391 
2392 #endif /* P2P_H */
2393