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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 	 * he - Indicates if IEEE 802.11ax HE is enabled
108 	 */
109 	int he;
110 
111 	/**
112 	 * ssid - SSID of the group
113 	 */
114 	u8 ssid[SSID_MAX_LEN];
115 
116 	/**
117 	 * ssid_len - Length of SSID in octets
118 	 */
119 	size_t ssid_len;
120 
121 	/**
122 	 * psk - WPA pre-shared key (256 bits) (GO only)
123 	 */
124 	u8 psk[32];
125 
126 	/**
127 	 * psk_set - Whether PSK field is configured (GO only)
128 	 */
129 	int psk_set;
130 
131 	/**
132 	 * passphrase - WPA2-Personal passphrase for the group (GO only)
133 	 */
134 	char passphrase[64];
135 
136 	/**
137 	 * peer_device_addr - P2P Device Address of the peer
138 	 */
139 	u8 peer_device_addr[ETH_ALEN];
140 
141 	/**
142 	 * peer_interface_addr - P2P Interface Address of the peer
143 	 */
144 	u8 peer_interface_addr[ETH_ALEN];
145 
146 	/**
147 	 * wps_method - WPS method to be used during provisioning
148 	 */
149 	enum p2p_wps_method wps_method;
150 
151 #define P2P_MAX_CHANNELS 50
152 
153 	/**
154 	 * freq_list - Zero-terminated list of possible operational channels
155 	 */
156 	int freq_list[P2P_MAX_CHANNELS];
157 
158 	/**
159 	 * persistent_group - Whether the group should be made persistent
160 	 * 0 = not persistent
161 	 * 1 = persistent group without persistent reconnect
162 	 * 2 = persistent group with persistent reconnect
163 	 */
164 	int persistent_group;
165 
166 	/**
167 	 * peer_config_timeout - Peer configuration timeout (in 10 msec units)
168 	 */
169 	unsigned int peer_config_timeout;
170 };
171 
172 struct p2ps_provision {
173 	/**
174 	 * pd_seeker - P2PS provision discovery seeker role
175 	 */
176 	unsigned int pd_seeker:1;
177 
178 	/**
179 	 * status - Remote returned provisioning status code
180 	 */
181 	int status;
182 
183 	/**
184 	 * adv_id - P2PS Advertisement ID
185 	 */
186 	u32 adv_id;
187 
188 	/**
189 	 * session_id - P2PS Session ID
190 	 */
191 	u32 session_id;
192 
193 	/**
194 	 * method - WPS Method (to be) used to establish session
195 	 */
196 	u16 method;
197 
198 	/**
199 	 * conncap - Connection Capabilities negotiated between P2P peers
200 	 */
201 	u8 conncap;
202 
203 	/**
204 	 * role - Info about the roles to be used for this connection
205 	 */
206 	u8 role;
207 
208 	/**
209 	 * session_mac - MAC address of the peer that started the session
210 	 */
211 	u8 session_mac[ETH_ALEN];
212 
213 	/**
214 	 * adv_mac - MAC address of the peer advertised the service
215 	 */
216 	u8 adv_mac[ETH_ALEN];
217 
218 	/**
219 	 * cpt_mask - Supported Coordination Protocol Transport mask
220 	 *
221 	 * A bitwise mask of supported ASP Coordination Protocol Transports.
222 	 * This property is set together and corresponds with cpt_priority.
223 	 */
224 	u8 cpt_mask;
225 
226 	/**
227 	 * cpt_priority - Coordination Protocol Transport priority list
228 	 *
229 	 * Priorities of supported ASP Coordination Protocol Transports.
230 	 * This property is set together and corresponds with cpt_mask.
231 	 * The CPT priority list is 0 terminated.
232 	 */
233 	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
234 
235 	/**
236 	 * force_freq - The only allowed channel frequency in MHz or 0.
237 	 */
238 	unsigned int force_freq;
239 
240 	/**
241 	 * pref_freq - Preferred operating frequency in MHz or 0.
242 	 */
243 	unsigned int pref_freq;
244 
245 	/**
246 	 * info - Vendor defined extra Provisioning information
247 	 */
248 	char info[0];
249 };
250 
251 struct p2ps_advertisement {
252 	struct p2ps_advertisement *next;
253 
254 	/**
255 	 * svc_info - Pointer to (internal) Service defined information
256 	 */
257 	char *svc_info;
258 
259 	/**
260 	 * id - P2PS Advertisement ID
261 	 */
262 	u32 id;
263 
264 	/**
265 	 * config_methods - WPS Methods which are allowed for this service
266 	 */
267 	u16 config_methods;
268 
269 	/**
270 	 * state - Current state of the service: 0 - Out Of Service, 1-255 Vendor defined
271 	 */
272 	u8 state;
273 
274 	/**
275 	 * auto_accept - Automatically Accept provisioning request if possible.
276 	 */
277 	u8 auto_accept;
278 
279 	/**
280 	 * hash - 6 octet Service Name has to match against incoming Probe Requests
281 	 */
282 	u8 hash[P2PS_HASH_LEN];
283 
284 	/**
285 	 * cpt_mask - supported Coordination Protocol Transport mask
286 	 *
287 	 * A bitwise mask of supported ASP Coordination Protocol Transports.
288 	 * This property is set together and corresponds with cpt_priority.
289 	 */
290 	u8 cpt_mask;
291 
292 	/**
293 	 * cpt_priority - Coordination Protocol Transport priority list
294 	 *
295 	 * Priorities of supported ASP Coordinatin Protocol Transports.
296 	 * This property is set together and corresponds with cpt_mask.
297 	 * The CPT priority list is 0 terminated.
298 	 */
299 	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
300 
301 	/**
302 	 * svc_name - NULL Terminated UTF-8 Service Name, and svc_info storage
303 	 */
304 	char svc_name[0];
305 };
306 
307 
308 struct p2p_data;
309 
310 enum p2p_scan_type {
311 	P2P_SCAN_SOCIAL,
312 	P2P_SCAN_FULL,
313 	P2P_SCAN_SPECIFIC,
314 	P2P_SCAN_SOCIAL_PLUS_ONE
315 };
316 
317 #define P2P_MAX_WPS_VENDOR_EXT 10
318 
319 /**
320  * struct p2p_peer_info - P2P peer information
321  */
322 struct p2p_peer_info {
323 	/**
324 	 * p2p_device_addr - P2P Device Address of the peer
325 	 */
326 	u8 p2p_device_addr[ETH_ALEN];
327 
328 	/**
329 	 * pri_dev_type - Primary Device Type
330 	 */
331 	u8 pri_dev_type[8];
332 
333 	/**
334 	 * device_name - Device Name (0..32 octets encoded in UTF-8)
335 	 */
336 	char device_name[WPS_DEV_NAME_MAX_LEN + 1];
337 
338 	/**
339 	 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8)
340 	 */
341 	char manufacturer[WPS_MANUFACTURER_MAX_LEN + 1];
342 
343 	/**
344 	 * model_name - Model Name (0..32 octets encoded in UTF-8)
345 	 */
346 	char model_name[WPS_MODEL_NAME_MAX_LEN + 1];
347 
348 	/**
349 	 * model_number - Model Number (0..32 octets encoded in UTF-8)
350 	 */
351 	char model_number[WPS_MODEL_NUMBER_MAX_LEN + 1];
352 
353 	/**
354 	 * serial_number - Serial Number (0..32 octets encoded in UTF-8)
355 	 */
356 	char serial_number[WPS_SERIAL_NUMBER_MAX_LEN + 1];
357 
358 	/**
359 	 * level - Signal level
360 	 */
361 	int level;
362 
363 	/**
364 	 * config_methods - WPS Configuration Methods
365 	 */
366 	u16 config_methods;
367 
368 	/**
369 	 * dev_capab - Device Capabilities
370 	 */
371 	u8 dev_capab;
372 
373 	/**
374 	 * group_capab - Group Capabilities
375 	 */
376 	u8 group_capab;
377 
378 	/**
379 	 * wps_sec_dev_type_list - WPS secondary device type list
380 	 *
381 	 * This list includes from 0 to 16 Secondary Device Types as indicated
382 	 * by wps_sec_dev_type_list_len (8 * number of types).
383 	 */
384 	u8 wps_sec_dev_type_list[WPS_SEC_DEV_TYPE_MAX_LEN];
385 
386 	/**
387 	 * wps_sec_dev_type_list_len - Length of secondary device type list
388 	 */
389 	size_t wps_sec_dev_type_list_len;
390 
391 	struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
392 
393 	/**
394 	 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s)
395 	 */
396 	struct wpabuf *wfd_subelems;
397 
398 	/**
399 	 * vendor_elems - Unrecognized vendor elements
400 	 *
401 	 * This buffer includes any other vendor element than P2P, WPS, and WFD
402 	 * IE(s) from the frame that was used to discover the peer.
403 	 */
404 	struct wpabuf *vendor_elems;
405 
406 	/**
407 	 * p2ps_instance - P2PS Application Service Info
408 	 */
409 	struct wpabuf *p2ps_instance;
410 };
411 
412 enum p2p_prov_disc_status {
413 	P2P_PROV_DISC_SUCCESS,
414 	P2P_PROV_DISC_TIMEOUT,
415 	P2P_PROV_DISC_REJECTED,
416 	P2P_PROV_DISC_TIMEOUT_JOIN,
417 	P2P_PROV_DISC_INFO_UNAVAILABLE,
418 };
419 
420 struct p2p_channel {
421 	u8 op_class;
422 	u8 chan;
423 };
424 
425 /**
426  * struct p2p_config - P2P configuration
427  *
428  * This configuration is provided to the P2P module during initialization with
429  * p2p_init().
430  */
431 struct p2p_config {
432 	/**
433 	 * country - Country code to use in P2P operations
434 	 */
435 	char country[3];
436 
437 	/**
438 	 * reg_class - Regulatory class for own listen channel
439 	 */
440 	u8 reg_class;
441 
442 	/**
443 	 * channel - Own listen channel
444 	 */
445 	u8 channel;
446 
447 	/**
448 	 * channel_forced - the listen channel was forced by configuration
449 	 *                  or by control interface and cannot be overridden
450 	 */
451 	u8 channel_forced;
452 
453 	/**
454 	 * Regulatory class for own operational channel
455 	 */
456 	u8 op_reg_class;
457 
458 	/**
459 	 * op_channel - Own operational channel
460 	 */
461 	u8 op_channel;
462 
463 	/**
464 	 * cfg_op_channel - Whether op_channel is hardcoded in configuration
465 	 */
466 	u8 cfg_op_channel;
467 
468 	/**
469 	 * channels - Own supported regulatory classes and channels
470 	 *
471 	 * List of supposerted channels per regulatory class. The regulatory
472 	 * classes are defined in IEEE Std 802.11-2007 Annex J and the
473 	 * numbering of the clases depends on the configured country code.
474 	 */
475 	struct p2p_channels channels;
476 
477 	/**
478 	 * cli_channels - Additional client channels
479 	 *
480 	 * This list of channels (if any) will be used when advertising local
481 	 * channels during GO Negotiation or Invitation for the cases where the
482 	 * local end may become the client. This may allow the peer to become a
483 	 * GO on additional channels if it supports these options. The main use
484 	 * case for this is to include passive-scan channels on devices that may
485 	 * not know their current location and have configured most channels to
486 	 * not allow initiation of radition (i.e., another device needs to take
487 	 * master responsibilities).
488 	 */
489 	struct p2p_channels cli_channels;
490 
491 	/**
492 	 * num_pref_chan - Number of pref_chan entries
493 	 */
494 	unsigned int num_pref_chan;
495 
496 	/**
497 	 * pref_chan - Preferred channels for GO Negotiation
498 	 */
499 	struct p2p_channel *pref_chan;
500 
501 	/**
502 	 * pri_dev_type - Primary Device Type (see WPS)
503 	 */
504 	u8 pri_dev_type[8];
505 
506 	/**
507 	 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types
508 	 */
509 #define P2P_SEC_DEVICE_TYPES 5
510 
511 	/**
512 	 * sec_dev_type - Optional secondary device types
513 	 */
514 	u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
515 
516 	/**
517 	 * num_sec_dev_types - Number of sec_dev_type entries
518 	 */
519 	size_t num_sec_dev_types;
520 
521 	/**
522 	 * dev_addr - P2P Device Address
523 	 */
524 	u8 dev_addr[ETH_ALEN];
525 
526 	/**
527 	 * dev_name - Device Name
528 	 */
529 	char *dev_name;
530 
531 	char *manufacturer;
532 	char *model_name;
533 	char *model_number;
534 	char *serial_number;
535 
536 	u8 uuid[16];
537 	u16 config_methods;
538 
539 	/**
540 	 * concurrent_operations - Whether concurrent operations are supported
541 	 */
542 	int concurrent_operations;
543 
544 	/**
545 	 * max_peers - Maximum number of discovered peers to remember
546 	 *
547 	 * If more peers are discovered, older entries will be removed to make
548 	 * room for the new ones.
549 	 */
550 	size_t max_peers;
551 
552 	/**
553 	 * p2p_intra_bss - Intra BSS communication is supported
554 	 */
555 	int p2p_intra_bss;
556 
557 	/**
558 	 * ssid_postfix - Postfix data to add to the SSID
559 	 *
560 	 * This data will be added to the end of the SSID after the
561 	 * DIRECT-<random two octets> prefix.
562 	 */
563 	u8 ssid_postfix[SSID_MAX_LEN - 9];
564 
565 	/**
566 	 * ssid_postfix_len - Length of the ssid_postfix data
567 	 */
568 	size_t ssid_postfix_len;
569 
570 	/**
571 	 * max_listen - Maximum listen duration in ms
572 	 */
573 	unsigned int max_listen;
574 
575 	/**
576 	 * passphrase_len - Passphrase length (8..63)
577 	 *
578 	 * This parameter controls the length of the random passphrase that is
579 	 * generated at the GO.
580 	 */
581 	unsigned int passphrase_len;
582 
583 	/**
584 	 * cb_ctx - Context to use with callback functions
585 	 */
586 	void *cb_ctx;
587 
588 	/**
589 	 * debug_print - Debug print
590 	 * @ctx: Callback context from cb_ctx
591 	 * @level: Debug verbosity level (MSG_*)
592 	 * @msg: Debug message
593 	 */
594 	void (*debug_print)(void *ctx, int level, const char *msg);
595 
596 
597 	/* Callbacks to request lower layer driver operations */
598 
599 	/**
600 	 * p2p_scan - Request a P2P scan/search
601 	 * @ctx: Callback context from cb_ctx
602 	 * @type: Scan type
603 	 * @freq: Specific frequency (MHz) to scan or 0 for no restriction
604 	 * @num_req_dev_types: Number of requested device types
605 	 * @req_dev_types: Array containing requested device types
606 	 * @dev_id: Device ID to search for or %NULL to find all devices
607 	 * @pw_id: Device Password ID
608 	 * Returns: 0 on success, -1 on failure
609 	 *
610 	 * This callback function is used to request a P2P scan or search
611 	 * operation to be completed. Type type argument specifies which type
612 	 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the
613 	 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL
614 	 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC
615 	 * request a scan of a single channel specified by freq.
616 	 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels
617 	 * plus one extra channel specified by freq.
618 	 *
619 	 * The full scan is used for the initial scan to find group owners from
620 	 * all. The other types are used during search phase scan of the social
621 	 * channels (with potential variation if the Listen channel of the
622 	 * target peer is known or if other channels are scanned in steps).
623 	 *
624 	 * The scan results are returned after this call by calling
625 	 * p2p_scan_res_handler() for each scan result that has a P2P IE and
626 	 * then calling p2p_scan_res_handled() to indicate that all scan
627 	 * results have been indicated.
628 	 */
629 	int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq,
630 			unsigned int num_req_dev_types,
631 			const u8 *req_dev_types, const u8 *dev_id, u16 pw_id);
632 
633 	/**
634 	 * send_probe_resp - Transmit a Probe Response frame
635 	 * @ctx: Callback context from cb_ctx
636 	 * @buf: Probe Response frame (including the header and body)
637 	 * @freq: Forced frequency (in MHz) to use or 0.
638 	 * Returns: 0 on success, -1 on failure
639 	 *
640 	 * This function is used to reply to Probe Request frames that were
641 	 * indicated with a call to p2p_probe_req_rx(). The response is to be
642 	 * sent on the same channel, unless otherwise specified, or to be
643 	 * dropped if the driver is not listening to Probe Request frames
644 	 * anymore.
645 	 *
646 	 * Alternatively, the responsibility for building the Probe Response
647 	 * frames in Listen state may be in another system component in which
648 	 * case this function need to be implemented (i.e., the function
649 	 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe
650 	 * Response frames in such a case are available from the
651 	 * start_listen() callback. It should be noted that the received Probe
652 	 * Request frames must be indicated by calling p2p_probe_req_rx() even
653 	 * if this send_probe_resp() is not used.
654 	 */
655 	int (*send_probe_resp)(void *ctx, const struct wpabuf *buf,
656 			       unsigned int freq);
657 
658 	/**
659 	 * send_action - Transmit an Action frame
660 	 * @ctx: Callback context from cb_ctx
661 	 * @freq: Frequency in MHz for the channel on which to transmit
662 	 * @dst: Destination MAC address (Address 1)
663 	 * @src: Source MAC address (Address 2)
664 	 * @bssid: BSSID (Address 3)
665 	 * @buf: Frame body (starting from Category field)
666 	 * @len: Length of buf in octets
667 	 * @wait_time: How many msec to wait for a response frame
668 	 * @scheduled: Return value indicating whether the transmissions was
669 	 *	scheduled to happen once the radio is available
670 	 * Returns: 0 on success, -1 on failure
671 	 *
672 	 * The Action frame may not be transmitted immediately and the status
673 	 * of the transmission must be reported by calling
674 	 * p2p_send_action_cb() once the frame has either been transmitted or
675 	 * it has been dropped due to excessive retries or other failure to
676 	 * transmit.
677 	 */
678 	int (*send_action)(void *ctx, unsigned int freq, const u8 *dst,
679 			   const u8 *src, const u8 *bssid, const u8 *buf,
680 			   size_t len, unsigned int wait_time, int *scheduled);
681 
682 	/**
683 	 * send_action_done - Notify that Action frame sequence was completed
684 	 * @ctx: Callback context from cb_ctx
685 	 *
686 	 * This function is called when the Action frame sequence that was
687 	 * started with send_action() has been completed, i.e., when there is
688 	 * no need to wait for a response from the destination peer anymore.
689 	 */
690 	void (*send_action_done)(void *ctx);
691 
692 	/**
693 	 * start_listen - Start Listen state
694 	 * @ctx: Callback context from cb_ctx
695 	 * @freq: Frequency of the listen channel in MHz
696 	 * @duration: Duration for the Listen state in milliseconds
697 	 * @probe_resp_ie: IE(s) to be added to Probe Response frames
698 	 * Returns: 0 on success, -1 on failure
699 	 *
700 	 * This Listen state may not start immediately since the driver may
701 	 * have other pending operations to complete first. Once the Listen
702 	 * state has started, p2p_listen_cb() must be called to notify the P2P
703 	 * module. Once the Listen state is stopped, p2p_listen_end() must be
704 	 * called to notify the P2P module that the driver is not in the Listen
705 	 * state anymore.
706 	 *
707 	 * If the send_probe_resp() is not used for generating the response,
708 	 * the IEs from probe_resp_ie need to be added to the end of the Probe
709 	 * Response frame body. If send_probe_resp() is used, the probe_resp_ie
710 	 * information can be ignored.
711 	 */
712 	int (*start_listen)(void *ctx, unsigned int freq,
713 			    unsigned int duration,
714 			    const struct wpabuf *probe_resp_ie);
715 	/**
716 	 * stop_listen - Stop Listen state
717 	 * @ctx: Callback context from cb_ctx
718 	 *
719 	 * This callback can be used to stop a Listen state operation that was
720 	 * previously requested with start_listen().
721 	 */
722 	void (*stop_listen)(void *ctx);
723 
724 	/**
725 	 * get_noa - Get current Notice of Absence attribute payload
726 	 * @ctx: Callback context from cb_ctx
727 	 * @interface_addr: P2P Interface Address of the GO
728 	 * @buf: Buffer for returning NoA
729 	 * @buf_len: Buffer length in octets
730 	 * Returns: Number of octets used in buf, 0 to indicate no NoA is being
731 	 * advertized, or -1 on failure
732 	 *
733 	 * This function is used to fetch the current Notice of Absence
734 	 * attribute value from GO.
735 	 */
736 	int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf,
737 		       size_t buf_len);
738 
739 	/* Callbacks to notify events to upper layer management entity */
740 
741 	/**
742 	 * dev_found - Notification of a found P2P Device
743 	 * @ctx: Callback context from cb_ctx
744 	 * @addr: Source address of the message triggering this notification
745 	 * @info: P2P peer information
746 	 * @new_device: Inform if the peer is newly found
747 	 *
748 	 * This callback is used to notify that a new P2P Device has been
749 	 * found. This may happen, e.g., during Search state based on scan
750 	 * results or during Listen state based on receive Probe Request and
751 	 * Group Owner Negotiation Request.
752 	 */
753 	void (*dev_found)(void *ctx, const u8 *addr,
754 			  const struct p2p_peer_info *info,
755 			  int new_device);
756 
757 	/**
758 	 * dev_lost - Notification of a lost P2P Device
759 	 * @ctx: Callback context from cb_ctx
760 	 * @dev_addr: P2P Device Address of the lost P2P Device
761 	 *
762 	 * This callback is used to notify that a P2P Device has been deleted.
763 	 */
764 	void (*dev_lost)(void *ctx, const u8 *dev_addr);
765 
766 	/**
767 	 * find_stopped - Notification of a p2p_find operation stopping
768 	 * @ctx: Callback context from cb_ctx
769 	 */
770 	void (*find_stopped)(void *ctx);
771 
772 	/**
773 	 * go_neg_req_rx - Notification of a receive GO Negotiation Request
774 	 * @ctx: Callback context from cb_ctx
775 	 * @src: Source address of the message triggering this notification
776 	 * @dev_passwd_id: WPS Device Password ID
777 	 * @go_intent: Peer's GO Intent
778 	 *
779 	 * This callback is used to notify that a P2P Device is requesting
780 	 * group owner negotiation with us, but we do not have all the
781 	 * necessary information to start GO Negotiation. This indicates that
782 	 * the local user has not authorized the connection yet by providing a
783 	 * PIN or PBC button press. This information can be provided with a
784 	 * call to p2p_connect().
785 	 */
786 	void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id,
787 			      u8 go_intent);
788 
789 	/**
790 	 * go_neg_completed - Notification of GO Negotiation results
791 	 * @ctx: Callback context from cb_ctx
792 	 * @res: GO Negotiation results
793 	 *
794 	 * This callback is used to notify that Group Owner Negotiation has
795 	 * been completed. Non-zero struct p2p_go_neg_results::status indicates
796 	 * failed negotiation. In case of success, this function is responsible
797 	 * for creating a new group interface (or using the existing interface
798 	 * depending on driver features), setting up the group interface in
799 	 * proper mode based on struct p2p_go_neg_results::role_go and
800 	 * initializing WPS provisioning either as a Registrar (if GO) or as an
801 	 * Enrollee. Successful WPS provisioning must be indicated by calling
802 	 * p2p_wps_success_cb(). The callee is responsible for timing out group
803 	 * formation if WPS provisioning cannot be completed successfully
804 	 * within 15 seconds.
805 	 */
806 	void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res);
807 
808 	/**
809 	 * sd_request - Callback on Service Discovery Request
810 	 * @ctx: Callback context from cb_ctx
811 	 * @freq: Frequency (in MHz) of the channel
812 	 * @sa: Source address of the request
813 	 * @dialog_token: Dialog token
814 	 * @update_indic: Service Update Indicator from the source of request
815 	 * @tlvs: P2P Service Request TLV(s)
816 	 * @tlvs_len: Length of tlvs buffer in octets
817 	 *
818 	 * This callback is used to indicate reception of a service discovery
819 	 * request. Response to the query must be indicated by calling
820 	 * p2p_sd_response() with the context information from the arguments to
821 	 * this callback function.
822 	 *
823 	 * This callback handler can be set to %NULL to indicate that service
824 	 * discovery is not supported.
825 	 */
826 	void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token,
827 			   u16 update_indic, const u8 *tlvs, size_t tlvs_len);
828 
829 	/**
830 	 * sd_response - Callback on Service Discovery Response
831 	 * @ctx: Callback context from cb_ctx
832 	 * @sa: Source address of the request
833 	 * @update_indic: Service Update Indicator from the source of response
834 	 * @tlvs: P2P Service Response TLV(s)
835 	 * @tlvs_len: Length of tlvs buffer in octets
836 	 *
837 	 * This callback is used to indicate reception of a service discovery
838 	 * response. This callback handler can be set to %NULL if no service
839 	 * discovery requests are used. The information provided with this call
840 	 * is replies to the queries scheduled with p2p_sd_request().
841 	 */
842 	void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic,
843 			    const u8 *tlvs, size_t tlvs_len);
844 
845 	/**
846 	 * prov_disc_req - Callback on Provisiong Discovery Request
847 	 * @ctx: Callback context from cb_ctx
848 	 * @peer: Source address of the request
849 	 * @config_methods: Requested WPS Config Method
850 	 * @dev_addr: P2P Device Address of the found P2P Device
851 	 * @pri_dev_type: Primary Device Type
852 	 * @dev_name: Device Name
853 	 * @supp_config_methods: Supported configuration Methods
854 	 * @dev_capab: Device Capabilities
855 	 * @group_capab: Group Capabilities
856 	 * @group_id: P2P Group ID (or %NULL if not included)
857 	 * @group_id_len: Length of P2P Group ID
858 	 *
859 	 * This callback is used to indicate reception of a Provision Discovery
860 	 * Request frame that the P2P module accepted.
861 	 */
862 	void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods,
863 			      const u8 *dev_addr, const u8 *pri_dev_type,
864 			      const char *dev_name, u16 supp_config_methods,
865 			      u8 dev_capab, u8 group_capab,
866 			      const u8 *group_id, size_t group_id_len);
867 
868 	/**
869 	 * prov_disc_resp - Callback on Provisiong Discovery Response
870 	 * @ctx: Callback context from cb_ctx
871 	 * @peer: Source address of the response
872 	 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure
873 	 *
874 	 * This callback is used to indicate reception of a Provision Discovery
875 	 * Response frame for a pending request scheduled with
876 	 * p2p_prov_disc_req(). This callback handler can be set to %NULL if
877 	 * provision discovery is not used.
878 	 */
879 	void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods);
880 
881 	/**
882 	 * prov_disc_fail - Callback on Provision Discovery failure
883 	 * @ctx: Callback context from cb_ctx
884 	 * @peer: Source address of the response
885 	 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS
886 	 * @adv_id: If non-zero, then the adv_id of the PD Request
887 	 * @adv_mac: P2P Device Address of the advertizer
888 	 * @deferred_session_resp: Deferred session response sent by advertizer
889 	 *
890 	 * This callback is used to indicate either a failure or no response
891 	 * to an earlier provision discovery request.
892 	 *
893 	 * This callback handler can be set to %NULL if provision discovery
894 	 * is not used or failures do not need to be indicated.
895 	 */
896 	void (*prov_disc_fail)(void *ctx, const u8 *peer,
897 			       enum p2p_prov_disc_status status,
898 			       u32 adv_id, const u8 *adv_mac,
899 			       const char *deferred_session_resp);
900 
901 	/**
902 	 * invitation_process - Optional callback for processing Invitations
903 	 * @ctx: Callback context from cb_ctx
904 	 * @sa: Source address of the Invitation Request
905 	 * @bssid: P2P Group BSSID from the request or %NULL if not included
906 	 * @go_dev_addr: GO Device Address from P2P Group ID
907 	 * @ssid: SSID from P2P Group ID
908 	 * @ssid_len: Length of ssid buffer in octets
909 	 * @go: Variable for returning whether the local end is GO in the group
910 	 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO)
911 	 * @force_freq: Variable for returning forced frequency for the group
912 	 * @persistent_group: Whether this is an invitation to reinvoke a
913 	 *	persistent group (instead of invitation to join an active
914 	 *	group)
915 	 * @channels: Available operating channels for the group
916 	 * @dev_pw_id: Device Password ID for NFC static handover or -1 if not
917 	 *	used
918 	 * Returns: Status code (P2P_SC_*)
919 	 *
920 	 * This optional callback can be used to implement persistent reconnect
921 	 * by allowing automatic restarting of persistent groups without user
922 	 * interaction. If this callback is not implemented (i.e., is %NULL),
923 	 * the received Invitation Request frames are replied with
924 	 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the
925 	 * invitation_result() callback.
926 	 *
927 	 * If the requested parameters are acceptable and the group is known,
928 	 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown,
929 	 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED
930 	 * can be returned if there is not enough data to provide immediate
931 	 * response, i.e., if some sort of user interaction is needed. The
932 	 * invitation_received() callback will be called in that case
933 	 * immediately after this call.
934 	 */
935 	u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid,
936 				 const u8 *go_dev_addr, const u8 *ssid,
937 				 size_t ssid_len, int *go, u8 *group_bssid,
938 				 int *force_freq, int persistent_group,
939 				 const struct p2p_channels *channels,
940 				 int dev_pw_id);
941 
942 	/**
943 	 * invitation_received - Callback on Invitation Request RX
944 	 * @ctx: Callback context from cb_ctx
945 	 * @sa: Source address of the Invitation Request
946 	 * @bssid: P2P Group BSSID or %NULL if not received
947 	 * @ssid: SSID of the group
948 	 * @ssid_len: Length of ssid in octets
949 	 * @go_dev_addr: GO Device Address
950 	 * @status: Response Status
951 	 * @op_freq: Operational frequency for the group
952 	 *
953 	 * This callback is used to indicate sending of an Invitation Response
954 	 * for a received Invitation Request. If status == 0 (success), the
955 	 * upper layer code is responsible for starting the group. status == 1
956 	 * indicates need to get user authorization for the group. Other status
957 	 * values indicate that the invitation request was rejected.
958 	 */
959 	void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid,
960 				    const u8 *ssid, size_t ssid_len,
961 				    const u8 *go_dev_addr, u8 status,
962 				    int op_freq);
963 
964 	/**
965 	 * invitation_result - Callback on Invitation result
966 	 * @ctx: Callback context from cb_ctx
967 	 * @status: Negotiation result (Status Code)
968 	 * @bssid: P2P Group BSSID or %NULL if not received
969 	 * @channels: Available operating channels for the group
970 	 * @addr: Peer address
971 	 * @freq: Frequency (in MHz) indicated during invitation or 0
972 	 * @peer_oper_freq: Operating frequency (in MHz) advertized by the peer
973 	 * during invitation or 0
974 	 *
975 	 * This callback is used to indicate result of an Invitation procedure
976 	 * started with a call to p2p_invite(). The indicated status code is
977 	 * the value received from the peer in Invitation Response with 0
978 	 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a
979 	 * local failure in transmitting the Invitation Request.
980 	 */
981 	void (*invitation_result)(void *ctx, int status, const u8 *bssid,
982 				  const struct p2p_channels *channels,
983 				  const u8 *addr, int freq, int peer_oper_freq);
984 
985 	/**
986 	 * go_connected - Check whether we are connected to a GO
987 	 * @ctx: Callback context from cb_ctx
988 	 * @dev_addr: P2P Device Address of a GO
989 	 * Returns: 1 if we are connected as a P2P client to the specified GO
990 	 * or 0 if not.
991 	 */
992 	int (*go_connected)(void *ctx, const u8 *dev_addr);
993 
994 	/**
995 	 * presence_resp - Callback on Presence Response
996 	 * @ctx: Callback context from cb_ctx
997 	 * @src: Source address (GO's P2P Interface Address)
998 	 * @status: Result of the request (P2P_SC_*)
999 	 * @noa: Returned NoA value
1000 	 * @noa_len: Length of the NoA buffer in octets
1001 	 */
1002 	void (*presence_resp)(void *ctx, const u8 *src, u8 status,
1003 			      const u8 *noa, size_t noa_len);
1004 
1005 	/**
1006 	 * is_concurrent_session_active - Check whether concurrent session is
1007 	 * active on other virtual interfaces
1008 	 * @ctx: Callback context from cb_ctx
1009 	 * Returns: 1 if concurrent session is active on other virtual interface
1010 	 * or 0 if not.
1011 	 */
1012 	int (*is_concurrent_session_active)(void *ctx);
1013 
1014 	/**
1015 	 * is_p2p_in_progress - Check whether P2P operation is in progress
1016 	 * @ctx: Callback context from cb_ctx
1017 	 * Returns: 1 if P2P operation (e.g., group formation) is in progress
1018 	 * or 0 if not.
1019 	 */
1020 	int (*is_p2p_in_progress)(void *ctx);
1021 
1022 	/**
1023 	 * Determine if we have a persistent group we share with remote peer
1024 	 * and allocate interface for this group if needed
1025 	 * @ctx: Callback context from cb_ctx
1026 	 * @addr: Peer device address to search for
1027 	 * @ssid: Persistent group SSID or %NULL if any
1028 	 * @ssid_len: Length of @ssid
1029 	 * @go_dev_addr: Buffer for returning GO P2P Device Address
1030 	 * @ret_ssid: Buffer for returning group SSID
1031 	 * @ret_ssid_len: Buffer for returning length of @ssid
1032 	 * @intended_iface_addr: Buffer for returning intended iface address
1033 	 * Returns: 1 if a matching persistent group was found, 0 otherwise
1034 	 */
1035 	int (*get_persistent_group)(void *ctx, const u8 *addr, const u8 *ssid,
1036 				    size_t ssid_len, u8 *go_dev_addr,
1037 				    u8 *ret_ssid, size_t *ret_ssid_len,
1038 				    u8 *intended_iface_addr);
1039 
1040 	/**
1041 	 * Get information about a possible local GO role
1042 	 * @ctx: Callback context from cb_ctx
1043 	 * @intended_addr: Buffer for returning intended GO interface address
1044 	 * @ssid: Buffer for returning group SSID
1045 	 * @ssid_len: Buffer for returning length of @ssid
1046 	 * @group_iface: Buffer for returning whether a separate group interface
1047 	 *	would be used
1048 	 * @freq: Variable for returning the current operating frequency of a
1049 	 *	currently running P2P GO.
1050 	 * Returns: 1 if GO info found, 0 otherwise
1051 	 *
1052 	 * This is used to compose New Group settings (SSID, and intended
1053 	 * address) during P2PS provisioning if results of provisioning *might*
1054 	 * result in our being an autonomous GO.
1055 	 */
1056 	int (*get_go_info)(void *ctx, u8 *intended_addr,
1057 			   u8 *ssid, size_t *ssid_len, int *group_iface,
1058 			   unsigned int *freq);
1059 
1060 	/**
1061 	 * remove_stale_groups - Remove stale P2PS groups
1062 	 *
1063 	 * Because P2PS stages *potential* GOs, and remote devices can remove
1064 	 * credentials unilaterally, we need to make sure we don't let stale
1065 	 * unusable groups build up.
1066 	 */
1067 	int (*remove_stale_groups)(void *ctx, const u8 *peer, const u8 *go,
1068 				   const u8 *ssid, size_t ssid_len);
1069 
1070 	/**
1071 	 * p2ps_prov_complete - P2PS provisioning complete
1072 	 *
1073 	 * When P2PS provisioning completes (successfully or not) we must
1074 	 * transmit all of the results to the upper layers.
1075 	 */
1076 	void (*p2ps_prov_complete)(void *ctx, u8 status, const u8 *dev,
1077 				   const u8 *adv_mac, const u8 *ses_mac,
1078 				   const u8 *grp_mac, u32 adv_id, u32 ses_id,
1079 				   u8 conncap, int passwd_id,
1080 				   const u8 *persist_ssid,
1081 				   size_t persist_ssid_size, int response_done,
1082 				   int prov_start, const char *session_info,
1083 				   const u8 *feat_cap, size_t feat_cap_len,
1084 				   unsigned int freq, const u8 *group_ssid,
1085 				   size_t group_ssid_len);
1086 
1087 	/**
1088 	 * prov_disc_resp_cb - Callback for indicating completion of PD Response
1089 	 * @ctx: Callback context from cb_ctx
1090 	 * Returns: 1 if operation was started, 0 otherwise
1091 	 *
1092 	 * This callback can be used to perform any pending actions after
1093 	 * provisioning. It is mainly used for P2PS pending group creation.
1094 	 */
1095 	int (*prov_disc_resp_cb)(void *ctx);
1096 
1097 	/**
1098 	 * p2ps_group_capability - Determine group capability
1099 	 * @ctx: Callback context from cb_ctx
1100 	 * @incoming: Peer requested roles, expressed with P2PS_SETUP_* bitmap.
1101 	 * @role: Local roles, expressed with P2PS_SETUP_* bitmap.
1102 	 * @force_freq: Variable for returning forced frequency for the group.
1103 	 * @pref_freq: Variable for returning preferred frequency for the group.
1104 	 * Returns: P2PS_SETUP_* bitmap of group capability result.
1105 	 *
1106 	 * This function can be used to determine group capability and
1107 	 * frequencies based on information from P2PS PD exchange and the
1108 	 * current state of ongoing groups and driver capabilities.
1109 	 */
1110 	u8 (*p2ps_group_capability)(void *ctx, u8 incoming, u8 role,
1111 				    unsigned int *force_freq,
1112 				    unsigned int *pref_freq);
1113 
1114 	/**
1115 	 * get_pref_freq_list - Get preferred frequency list for an interface
1116 	 * @ctx: Callback context from cb_ctx
1117 	 * @go: Whether the use if for GO role
1118 	 * @len: Length of freq_list in entries (both IN and OUT)
1119 	 * @freq_list: Buffer for returning the preferred frequencies (MHz)
1120 	 * Returns: 0 on success, -1 on failure
1121 	 *
1122 	 * This function can be used to query the preferred frequency list from
1123 	 * the driver specific to a particular interface type.
1124 	 */
1125 	int (*get_pref_freq_list)(void *ctx, int go,
1126 				  unsigned int *len, unsigned int *freq_list);
1127 };
1128 
1129 
1130 /* P2P module initialization/deinitialization */
1131 
1132 /**
1133  * p2p_init - Initialize P2P module
1134  * @cfg: P2P module configuration
1135  * Returns: Pointer to private data or %NULL on failure
1136  *
1137  * This function is used to initialize global P2P module context (one per
1138  * device). The P2P module will keep a copy of the configuration data, so the
1139  * caller does not need to maintain this structure. However, the callback
1140  * functions and the context parameters to them must be kept available until
1141  * the P2P module is deinitialized with p2p_deinit().
1142  */
1143 struct p2p_data * p2p_init(const struct p2p_config *cfg);
1144 
1145 /**
1146  * p2p_deinit - Deinitialize P2P module
1147  * @p2p: P2P module context from p2p_init()
1148  */
1149 void p2p_deinit(struct p2p_data *p2p);
1150 
1151 /**
1152  * p2p_flush - Flush P2P module state
1153  * @p2p: P2P module context from p2p_init()
1154  *
1155  * This command removes the P2P module state like peer device entries.
1156  */
1157 void p2p_flush(struct p2p_data *p2p);
1158 
1159 /**
1160  * p2p_unauthorize - Unauthorize the specified peer device
1161  * @p2p: P2P module context from p2p_init()
1162  * @addr: P2P peer entry to be unauthorized
1163  * Returns: 0 on success, -1 on failure
1164  *
1165  * This command removes any connection authorization from the specified P2P
1166  * peer device address. This can be used, e.g., to cancel effect of a previous
1167  * p2p_authorize() or p2p_connect() call that has not yet resulted in completed
1168  * GO Negotiation.
1169  */
1170 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr);
1171 
1172 /**
1173  * p2p_set_dev_name - Set device name
1174  * @p2p: P2P module context from p2p_init()
1175  * Returns: 0 on success, -1 on failure
1176  *
1177  * This function can be used to update the P2P module configuration with
1178  * information that was not available at the time of the p2p_init() call.
1179  */
1180 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name);
1181 
1182 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer);
1183 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name);
1184 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number);
1185 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number);
1186 
1187 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods);
1188 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid);
1189 
1190 /**
1191  * p2p_set_pri_dev_type - Set primary device type
1192  * @p2p: P2P module context from p2p_init()
1193  * Returns: 0 on success, -1 on failure
1194  *
1195  * This function can be used to update the P2P module configuration with
1196  * information that was not available at the time of the p2p_init() call.
1197  */
1198 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type);
1199 
1200 /**
1201  * p2p_set_sec_dev_types - Set secondary device types
1202  * @p2p: P2P module context from p2p_init()
1203  * Returns: 0 on success, -1 on failure
1204  *
1205  * This function can be used to update the P2P module configuration with
1206  * information that was not available at the time of the p2p_init() call.
1207  */
1208 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
1209 			  size_t num_dev_types);
1210 
1211 int p2p_set_country(struct p2p_data *p2p, const char *country);
1212 
1213 
1214 /* Commands from upper layer management entity */
1215 
1216 enum p2p_discovery_type {
1217 	P2P_FIND_START_WITH_FULL,
1218 	P2P_FIND_ONLY_SOCIAL,
1219 	P2P_FIND_PROGRESSIVE
1220 };
1221 
1222 /**
1223  * p2p_find - Start P2P Find (Device Discovery)
1224  * @p2p: P2P module context from p2p_init()
1225  * @timeout: Timeout for find operation in seconds or 0 for no timeout
1226  * @type: Device Discovery type
1227  * @num_req_dev_types: Number of requested device types
1228  * @req_dev_types: Requested device types array, must be an array
1229  *	containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no
1230  *	requested device types.
1231  * @dev_id: Device ID to search for or %NULL to find all devices
1232  * @search_delay: Extra delay in milliseconds between search iterations
1233  * @seek_count: Number of ASP Service Strings in the seek_string array
1234  * @seek_string: ASP Service Strings to query for in Probe Requests
1235  * @freq: Requested first scan frequency (in MHz) to modify type ==
1236  *	P2P_FIND_START_WITH_FULL behavior. 0 = Use normal full scan.
1237  *	If p2p_find is already in progress, this parameter is ignored and full
1238  *	scan will be executed.
1239  * Returns: 0 on success, -1 on failure
1240  */
1241 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1242 	     enum p2p_discovery_type type,
1243 	     unsigned int num_req_dev_types, const u8 *req_dev_types,
1244 	     const u8 *dev_id, unsigned int search_delay,
1245 	     u8 seek_count, const char **seek_string, int freq);
1246 
1247 /**
1248  * p2p_notify_scan_trigger_status - Indicate scan trigger status
1249  * @p2p: P2P module context from p2p_init()
1250  * @status: 0 on success, -1 on failure
1251  */
1252 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status);
1253 
1254 /**
1255  * p2p_stop_find - Stop P2P Find (Device Discovery)
1256  * @p2p: P2P module context from p2p_init()
1257  */
1258 void p2p_stop_find(struct p2p_data *p2p);
1259 
1260 /**
1261  * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq
1262  * @p2p: P2P module context from p2p_init()
1263  * @freq: Frequency in MHz for next operation
1264  *
1265  * This is like p2p_stop_find(), but Listen state is not stopped if we are
1266  * already on the same frequency.
1267  */
1268 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq);
1269 
1270 /**
1271  * p2p_listen - Start P2P Listen state for specified duration
1272  * @p2p: P2P module context from p2p_init()
1273  * @timeout: Listen state duration in milliseconds
1274  * Returns: 0 on success, -1 on failure
1275  *
1276  * This function can be used to request the P2P module to keep the device
1277  * discoverable on the listen channel for an extended set of time. At least in
1278  * its current form, this is mainly used for testing purposes and may not be of
1279  * much use for normal P2P operations.
1280  */
1281 int p2p_listen(struct p2p_data *p2p, unsigned int timeout);
1282 
1283 /**
1284  * p2p_stop_listen - Stop P2P Listen
1285  * @p2p: P2P module context from p2p_init()
1286  */
1287 void p2p_stop_listen(struct p2p_data *p2p);
1288 
1289 /**
1290  * p2p_connect - Start P2P group formation (GO negotiation)
1291  * @p2p: P2P module context from p2p_init()
1292  * @peer_addr: MAC address of the peer P2P client
1293  * @wps_method: WPS method to be used in provisioning
1294  * @go_intent: Local GO intent value (1..15)
1295  * @own_interface_addr: Intended interface address to use with the group
1296  * @force_freq: The only allowed channel frequency in MHz or 0
1297  * @persistent_group: Whether to create a persistent group (0 = no, 1 =
1298  * persistent group without persistent reconnect, 2 = persistent group with
1299  * persistent reconnect)
1300  * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
1301  *	a new SSID
1302  * @force_ssid_len: Length of $force_ssid buffer
1303  * @pd_before_go_neg: Whether to send Provision Discovery prior to GO
1304  *	Negotiation as an interoperability workaround when initiating group
1305  *	formation
1306  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
1307  *	force_freq == 0)
1308  * Returns: 0 on success, -1 on failure
1309  */
1310 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1311 		enum p2p_wps_method wps_method,
1312 		int go_intent, const u8 *own_interface_addr,
1313 		unsigned int force_freq, int persistent_group,
1314 		const u8 *force_ssid, size_t force_ssid_len,
1315 		int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id);
1316 
1317 /**
1318  * p2p_authorize - Authorize P2P group formation (GO negotiation)
1319  * @p2p: P2P module context from p2p_init()
1320  * @peer_addr: MAC address of the peer P2P client
1321  * @wps_method: WPS method to be used in provisioning
1322  * @go_intent: Local GO intent value (1..15)
1323  * @own_interface_addr: Intended interface address to use with the group
1324  * @force_freq: The only allowed channel frequency in MHz or 0
1325  * @persistent_group: Whether to create a persistent group (0 = no, 1 =
1326  * persistent group without persistent reconnect, 2 = persistent group with
1327  * persistent reconnect)
1328  * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
1329  *	a new SSID
1330  * @force_ssid_len: Length of $force_ssid buffer
1331  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
1332  *	force_freq == 0)
1333  * Returns: 0 on success, -1 on failure
1334  *
1335  * This is like p2p_connect(), but the actual group negotiation is not
1336  * initiated automatically, i.e., the other end is expected to do that.
1337  */
1338 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1339 		  enum p2p_wps_method wps_method,
1340 		  int go_intent, const u8 *own_interface_addr,
1341 		  unsigned int force_freq, int persistent_group,
1342 		  const u8 *force_ssid, size_t force_ssid_len,
1343 		  unsigned int pref_freq, u16 oob_pw_id);
1344 
1345 /**
1346  * p2p_reject - Reject peer device (explicitly block connection attempts)
1347  * @p2p: P2P module context from p2p_init()
1348  * @peer_addr: MAC address of the peer P2P client
1349  * Returns: 0 on success, -1 on failure
1350  */
1351 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr);
1352 
1353 /**
1354  * p2p_prov_disc_req - Send Provision Discovery Request
1355  * @p2p: P2P module context from p2p_init()
1356  * @peer_addr: MAC address of the peer P2P client
1357  * @p2ps_prov: Provisioning info for P2PS
1358  * @config_methods: WPS Config Methods value (only one bit set)
1359  * @join: Whether this is used by a client joining an active group
1360  * @force_freq: Forced TX frequency for the frame (mainly for the join case)
1361  * @user_initiated_pd: Flag to indicate if initiated by user or not
1362  * Returns: 0 on success, -1 on failure
1363  *
1364  * This function can be used to request a discovered P2P peer to display a PIN
1365  * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us
1366  * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame
1367  * is transmitted once immediately and if no response is received, the frame
1368  * will be sent again whenever the target device is discovered during device
1369  * dsicovery (start with a p2p_find() call). Response from the peer is
1370  * indicated with the p2p_config::prov_disc_resp() callback.
1371  */
1372 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr,
1373 		      struct p2ps_provision *p2ps_prov, u16 config_methods,
1374 		      int join, int force_freq,
1375 		      int user_initiated_pd);
1376 
1377 /**
1378  * p2p_sd_request - Schedule a service discovery query
1379  * @p2p: P2P module context from p2p_init()
1380  * @dst: Destination peer or %NULL to apply for all peers
1381  * @tlvs: P2P Service Query TLV(s)
1382  * Returns: Reference to the query or %NULL on failure
1383  *
1384  * Response to the query is indicated with the p2p_config::sd_response()
1385  * callback.
1386  */
1387 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst,
1388 		      const struct wpabuf *tlvs);
1389 
1390 #ifdef CONFIG_WIFI_DISPLAY
1391 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst,
1392 			  const struct wpabuf *tlvs);
1393 #endif /* CONFIG_WIFI_DISPLAY */
1394 
1395 /**
1396  * p2p_sd_cancel_request - Cancel a pending service discovery query
1397  * @p2p: P2P module context from p2p_init()
1398  * @req: Query reference from p2p_sd_request()
1399  * Returns: 0 if request for cancelled; -1 if not found
1400  */
1401 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req);
1402 
1403 /**
1404  * p2p_sd_response - Send response to a service discovery query
1405  * @p2p: P2P module context from p2p_init()
1406  * @freq: Frequency from p2p_config::sd_request() callback
1407  * @dst: Destination address from p2p_config::sd_request() callback
1408  * @dialog_token: Dialog token from p2p_config::sd_request() callback
1409  * @resp_tlvs: P2P Service Response TLV(s)
1410  *
1411  * This function is called as a response to the request indicated with
1412  * p2p_config::sd_request() callback.
1413  */
1414 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
1415 		     u8 dialog_token, const struct wpabuf *resp_tlvs);
1416 
1417 /**
1418  * p2p_sd_service_update - Indicate a change in local services
1419  * @p2p: P2P module context from p2p_init()
1420  *
1421  * This function needs to be called whenever there is a change in availability
1422  * of the local services. This will increment the Service Update Indicator
1423  * value which will be used in SD Request and Response frames.
1424  */
1425 void p2p_sd_service_update(struct p2p_data *p2p);
1426 
1427 
1428 enum p2p_invite_role {
1429 	P2P_INVITE_ROLE_GO,
1430 	P2P_INVITE_ROLE_ACTIVE_GO,
1431 	P2P_INVITE_ROLE_CLIENT
1432 };
1433 
1434 /**
1435  * p2p_invite - Invite a P2P Device into a group
1436  * @p2p: P2P module context from p2p_init()
1437  * @peer: Device Address of the peer P2P Device
1438  * @role: Local role in the group
1439  * @bssid: Group BSSID or %NULL if not known
1440  * @ssid: Group SSID
1441  * @ssid_len: Length of ssid in octets
1442  * @force_freq: The only allowed channel frequency in MHz or 0
1443  * @go_dev_addr: Forced GO Device Address or %NULL if none
1444  * @persistent_group: Whether this is to reinvoke a persistent group
1445  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
1446  *	force_freq == 0)
1447  * @dev_pw_id: Device Password ID from OOB Device Password (NFC) static handover
1448  *	case or -1 if not used
1449  * Returns: 0 on success, -1 on failure
1450  */
1451 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role,
1452 	       const u8 *bssid, const u8 *ssid, size_t ssid_len,
1453 	       unsigned int force_freq, const u8 *go_dev_addr,
1454 	       int persistent_group, unsigned int pref_freq, int dev_pw_id);
1455 
1456 /**
1457  * p2p_presence_req - Request GO presence
1458  * @p2p: P2P module context from p2p_init()
1459  * @go_interface_addr: GO P2P Interface Address
1460  * @own_interface_addr: Own P2P Interface Address for this group
1461  * @freq: Group operating frequence (in MHz)
1462  * @duration1: Preferred presence duration in microseconds
1463  * @interval1: Preferred presence interval in microseconds
1464  * @duration2: Acceptable presence duration in microseconds
1465  * @interval2: Acceptable presence interval in microseconds
1466  * Returns: 0 on success, -1 on failure
1467  *
1468  * If both duration and interval values are zero, the parameter pair is not
1469  * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0).
1470  */
1471 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
1472 		     const u8 *own_interface_addr, unsigned int freq,
1473 		     u32 duration1, u32 interval1, u32 duration2,
1474 		     u32 interval2);
1475 
1476 /**
1477  * p2p_ext_listen - Set Extended Listen Timing
1478  * @p2p: P2P module context from p2p_init()
1479  * @freq: Group operating frequence (in MHz)
1480  * @period: Availability period in milliseconds (1-65535; 0 to disable)
1481  * @interval: Availability interval in milliseconds (1-65535; 0 to disable)
1482  * Returns: 0 on success, -1 on failure
1483  *
1484  * This function can be used to enable or disable (period = interval = 0)
1485  * Extended Listen Timing. When enabled, the P2P Device will become
1486  * discoverable (go into Listen State) every @interval milliseconds for at
1487  * least @period milliseconds.
1488  */
1489 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
1490 		   unsigned int interval);
1491 
1492 /* Event notifications from upper layer management operations */
1493 
1494 /**
1495  * p2p_wps_success_cb - Report successfully completed WPS provisioning
1496  * @p2p: P2P module context from p2p_init()
1497  * @mac_addr: Peer address
1498  *
1499  * This function is used to report successfully completed WPS provisioning
1500  * during group formation in both GO/Registrar and client/Enrollee roles.
1501  */
1502 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr);
1503 
1504 /**
1505  * p2p_group_formation_failed - Report failed WPS provisioning
1506  * @p2p: P2P module context from p2p_init()
1507  *
1508  * This function is used to report failed group formation. This can happen
1509  * either due to failed WPS provisioning or due to 15 second timeout during
1510  * the provisioning phase.
1511  */
1512 void p2p_group_formation_failed(struct p2p_data *p2p);
1513 
1514 /**
1515  * p2p_get_provisioning_info - Get any stored provisioning info
1516  * @p2p: P2P module context from p2p_init()
1517  * @addr: Peer P2P Device Address
1518  * Returns: WPS provisioning information (WPS config method) or 0 if no
1519  * information is available
1520  *
1521  * This function is used to retrieve stored WPS provisioning info for the given
1522  * peer.
1523  */
1524 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr);
1525 
1526 /**
1527  * p2p_clear_provisioning_info - Clear any stored provisioning info
1528  * @p2p: P2P module context from p2p_init()
1529  * @iface_addr: Peer P2P Device Address
1530  *
1531  * This function is used to clear stored WPS provisioning info for the given
1532  * peer.
1533  */
1534 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr);
1535 
1536 
1537 /* Event notifications from lower layer driver operations */
1538 
1539 /**
1540  * enum p2p_probe_req_status
1541  *
1542  * @P2P_PREQ_MALFORMED: frame was not well-formed
1543  * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored
1544  * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request
1545  * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed
1546  * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P
1547  */
1548 enum p2p_probe_req_status {
1549 	P2P_PREQ_MALFORMED,
1550 	P2P_PREQ_NOT_LISTEN,
1551 	P2P_PREQ_NOT_P2P,
1552 	P2P_PREQ_NOT_PROCESSED,
1553 	P2P_PREQ_PROCESSED
1554 };
1555 
1556 /**
1557  * p2p_probe_req_rx - Report reception of a Probe Request frame
1558  * @p2p: P2P module context from p2p_init()
1559  * @addr: Source MAC address
1560  * @dst: Destination MAC address if available or %NULL
1561  * @bssid: BSSID if available or %NULL
1562  * @ie: Information elements from the Probe Request frame body
1563  * @ie_len: Length of ie buffer in octets
1564  * @rx_freq: Probe Request frame RX frequency
1565  * @p2p_lo_started: Whether P2P Listen Offload is started
1566  * Returns: value indicating the type and status of the probe request
1567  */
1568 enum p2p_probe_req_status
1569 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1570 		 const u8 *bssid, const u8 *ie, size_t ie_len,
1571 		 unsigned int rx_freq, int p2p_lo_started);
1572 
1573 /**
1574  * p2p_rx_action - Report received Action frame
1575  * @p2p: P2P module context from p2p_init()
1576  * @da: Destination address of the received Action frame
1577  * @sa: Source address of the received Action frame
1578  * @bssid: Address 3 of the received Action frame
1579  * @category: Category of the received Action frame
1580  * @data: Action frame body after the Category field
1581  * @len: Length of the data buffer in octets
1582  * @freq: Frequency (in MHz) on which the frame was received
1583  */
1584 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1585 		   const u8 *bssid, u8 category,
1586 		   const u8 *data, size_t len, int freq);
1587 
1588 /**
1589  * p2p_scan_res_handler - Indicate a P2P scan results
1590  * @p2p: P2P module context from p2p_init()
1591  * @bssid: BSSID of the scan result
1592  * @freq: Frequency of the channel on which the device was found in MHz
1593  * @rx_time: Time when the result was received
1594  * @level: Signal level (signal strength of the received Beacon/Probe Response
1595  *	frame)
1596  * @ies: Pointer to IEs from the scan result
1597  * @ies_len: Length of the ies buffer
1598  * Returns: 0 to continue or 1 to stop scan result indication
1599  *
1600  * This function is called to indicate a scan result entry with P2P IE from a
1601  * scan requested with struct p2p_config::p2p_scan(). This can be called during
1602  * the actual scan process (i.e., whenever a new device is found) or as a
1603  * sequence of calls after the full scan has been completed. The former option
1604  * can result in optimized operations, but may not be supported by all
1605  * driver/firmware designs. The ies buffer need to include at least the P2P IE,
1606  * but it is recommended to include all IEs received from the device. The
1607  * caller does not need to check that the IEs contain a P2P IE before calling
1608  * this function since frames will be filtered internally if needed.
1609  *
1610  * This function will return 1 if it wants to stop scan result iteration (and
1611  * scan in general if it is still in progress). This is used to allow faster
1612  * start of a pending operation, e.g., to start a pending GO negotiation.
1613  */
1614 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
1615 			 struct os_reltime *rx_time, int level, const u8 *ies,
1616 			 size_t ies_len);
1617 
1618 /**
1619  * p2p_scan_res_handled - Indicate end of scan results
1620  * @p2p: P2P module context from p2p_init()
1621  *
1622  * This function is called to indicate that all P2P scan results from a scan
1623  * have been reported with zero or more calls to p2p_scan_res_handler(). This
1624  * function must be called as a response to successful
1625  * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler()
1626  * calls stopped iteration.
1627  */
1628 void p2p_scan_res_handled(struct p2p_data *p2p);
1629 
1630 enum p2p_send_action_result {
1631 	P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
1632 	P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */,
1633 	P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
1634 };
1635 
1636 /**
1637  * p2p_send_action_cb - Notify TX status of an Action frame
1638  * @p2p: P2P module context from p2p_init()
1639  * @freq: Channel frequency in MHz
1640  * @dst: Destination MAC address (Address 1)
1641  * @src: Source MAC address (Address 2)
1642  * @bssid: BSSID (Address 3)
1643  * @result: Result of the transmission attempt
1644  *
1645  * This function is used to indicate the result of an Action frame transmission
1646  * that was requested with struct p2p_config::send_action() callback.
1647  */
1648 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
1649 			const u8 *src, const u8 *bssid,
1650 			enum p2p_send_action_result result);
1651 
1652 /**
1653  * p2p_listen_cb - Indicate the start of a requested Listen state
1654  * @p2p: P2P module context from p2p_init()
1655  * @freq: Listen channel frequency in MHz
1656  * @duration: Duration for the Listen state in milliseconds
1657  *
1658  * This function is used to indicate that a Listen state requested with
1659  * struct p2p_config::start_listen() callback has started.
1660  */
1661 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
1662 		   unsigned int duration);
1663 
1664 /**
1665  * p2p_listen_end - Indicate the end of a requested Listen state
1666  * @p2p: P2P module context from p2p_init()
1667  * @freq: Listen channel frequency in MHz
1668  * Returns: 0 if no operations were started, 1 if an operation was started
1669  *
1670  * This function is used to indicate that a Listen state requested with
1671  * struct p2p_config::start_listen() callback has ended.
1672  */
1673 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq);
1674 
1675 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
1676 		      const u8 *ie, size_t ie_len);
1677 
1678 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
1679 			const u8 *ie, size_t ie_len);
1680 
1681 
1682 /* Per-group P2P state for GO */
1683 
1684 struct p2p_group;
1685 
1686 /**
1687  * struct p2p_group_config - P2P group configuration
1688  *
1689  * This configuration is provided to the P2P module during initialization of
1690  * the per-group information with p2p_group_init().
1691  */
1692 struct p2p_group_config {
1693 	/**
1694 	 * persistent_group - Whether the group is persistent
1695 	 * 0 = not a persistent group
1696 	 * 1 = persistent group without persistent reconnect
1697 	 * 2 = persistent group with persistent reconnect
1698 	 */
1699 	int persistent_group;
1700 
1701 	/**
1702 	 * interface_addr - P2P Interface Address of the group
1703 	 */
1704 	u8 interface_addr[ETH_ALEN];
1705 
1706 	/**
1707 	 * max_clients - Maximum number of clients in the group
1708 	 */
1709 	unsigned int max_clients;
1710 
1711 	/**
1712 	 * ssid - Group SSID
1713 	 */
1714 	u8 ssid[SSID_MAX_LEN];
1715 
1716 	/**
1717 	 * ssid_len - Length of SSID
1718 	 */
1719 	size_t ssid_len;
1720 
1721 	/**
1722 	 * freq - Operating channel of the group
1723 	 */
1724 	int freq;
1725 
1726 	/**
1727 	 * ip_addr_alloc - Whether IP address allocation within 4-way handshake
1728 	 *	is supported
1729 	 */
1730 	int ip_addr_alloc;
1731 
1732 	/**
1733 	 * cb_ctx - Context to use with callback functions
1734 	 */
1735 	void *cb_ctx;
1736 
1737 	/**
1738 	 * ie_update - Notification of IE update
1739 	 * @ctx: Callback context from cb_ctx
1740 	 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change
1741 	 * @proberesp_ies: P2P Ie for Probe Response frames
1742 	 *
1743 	 * P2P module uses this callback function to notify whenever the P2P IE
1744 	 * in Beacon or Probe Response frames should be updated based on group
1745 	 * events.
1746 	 *
1747 	 * The callee is responsible for freeing the returned buffer(s) with
1748 	 * wpabuf_free().
1749 	 */
1750 	void (*ie_update)(void *ctx, struct wpabuf *beacon_ies,
1751 			  struct wpabuf *proberesp_ies);
1752 
1753 	/**
1754 	 * idle_update - Notification of changes in group idle state
1755 	 * @ctx: Callback context from cb_ctx
1756 	 * @idle: Whether the group is idle (no associated stations)
1757 	 */
1758 	void (*idle_update)(void *ctx, int idle);
1759 };
1760 
1761 /**
1762  * p2p_group_init - Initialize P2P group
1763  * @p2p: P2P module context from p2p_init()
1764  * @config: P2P group configuration (will be freed by p2p_group_deinit())
1765  * Returns: Pointer to private data or %NULL on failure
1766  *
1767  * This function is used to initialize per-group P2P module context. Currently,
1768  * this is only used to manage GO functionality and P2P clients do not need to
1769  * create an instance of this per-group information.
1770  */
1771 struct p2p_group * p2p_group_init(struct p2p_data *p2p,
1772 				  struct p2p_group_config *config);
1773 
1774 /**
1775  * p2p_group_deinit - Deinitialize P2P group
1776  * @group: P2P group context from p2p_group_init()
1777  */
1778 void p2p_group_deinit(struct p2p_group *group);
1779 
1780 /**
1781  * p2p_group_notif_assoc - Notification of P2P client association with GO
1782  * @group: P2P group context from p2p_group_init()
1783  * @addr: Interface address of the P2P client
1784  * @ie: IEs from the (Re)association Request frame
1785  * @len: Length of the ie buffer in octets
1786  * Returns: 0 on success, -1 on failure
1787  */
1788 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
1789 			  const u8 *ie, size_t len);
1790 
1791 /**
1792  * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response
1793  * @group: P2P group context from p2p_group_init()
1794  * @status: Status value (P2P_SC_SUCCESS if association succeeded)
1795  * Returns: P2P IE for (Re)association Response or %NULL on failure
1796  *
1797  * The caller is responsible for freeing the returned buffer with
1798  * wpabuf_free().
1799  */
1800 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status);
1801 
1802 /**
1803  * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO
1804  * @group: P2P group context from p2p_group_init()
1805  * @addr: Interface address of the P2P client
1806  */
1807 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr);
1808 
1809 /**
1810  * p2p_group_notif_formation_done - Notification of completed group formation
1811  * @group: P2P group context from p2p_group_init()
1812  */
1813 void p2p_group_notif_formation_done(struct p2p_group *group);
1814 
1815 /**
1816  * p2p_group_notif_noa - Notification of NoA change
1817  * @group: P2P group context from p2p_group_init()
1818  * @noa: Notice of Absence attribute payload, %NULL if none
1819  * @noa_len: Length of noa buffer in octets
1820  * Returns: 0 on success, -1 on failure
1821  *
1822  * Notify the P2P group management about a new NoA contents. This will be
1823  * inserted into the P2P IEs in Beacon and Probe Response frames with rest of
1824  * the group information.
1825  */
1826 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
1827 			size_t noa_len);
1828 
1829 /**
1830  * p2p_group_match_dev_type - Match device types in group with requested type
1831  * @group: P2P group context from p2p_group_init()
1832  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1833  * Returns: 1 on match, 0 on mismatch
1834  *
1835  * This function can be used to match the Requested Device Type attribute in
1836  * WPS IE with the device types of a group member for deciding whether a GO
1837  * should reply to a Probe Request frame. Match will be reported if the WPS IE
1838  * is not requested any specific device type.
1839  */
1840 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);
1841 
1842 /**
1843  * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id
1844  */
1845 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p);
1846 
1847 /**
1848  * p2p_group_go_discover - Send GO Discoverability Request to a group client
1849  * @group: P2P group context from p2p_group_init()
1850  * Returns: 0 on success (frame scheduled); -1 if client was not found
1851  */
1852 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id,
1853 			  const u8 *searching_dev, int rx_freq);
1854 
1855 
1856 /* Generic helper functions */
1857 
1858 /**
1859  * p2p_ie_text - Build text format description of P2P IE
1860  * @p2p_ie: P2P IE
1861  * @buf: Buffer for returning text
1862  * @end: Pointer to the end of the buf area
1863  * Returns: Number of octets written to the buffer or -1 on failure
1864  *
1865  * This function can be used to parse P2P IE contents into text format
1866  * field=value lines.
1867  */
1868 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end);
1869 
1870 /**
1871  * p2p_scan_result_text - Build text format description of P2P IE
1872  * @ies: Information elements from scan results
1873  * @ies_len: ies buffer length in octets
1874  * @buf: Buffer for returning text
1875  * @end: Pointer to the end of the buf area
1876  * Returns: Number of octets written to the buffer or -1 on failure
1877  *
1878  * This function can be used to parse P2P IE contents into text format
1879  * field=value lines.
1880  */
1881 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);
1882 
1883 /**
1884  * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated
1885  * P2P IE
1886  * @p2p_ie: P2P IE
1887  * @dev_addr: Buffer for returning P2P Device Address
1888  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
1889  */
1890 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr);
1891 
1892 /**
1893  * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s)
1894  * @ies: Information elements from scan results
1895  * @ies_len: ies buffer length in octets
1896  * @dev_addr: Buffer for returning P2P Device Address
1897  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
1898  */
1899 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr);
1900 
1901 /**
1902  * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame
1903  * @p2p: P2P module context from p2p_init()
1904  * @bssid: BSSID
1905  * @buf: Buffer for writing the P2P IE
1906  * @len: Maximum buf length in octets
1907  * @p2p_group: Whether this is for association with a P2P GO
1908  * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none
1909  * Returns: Number of octets written into buf or -1 on failure
1910  */
1911 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1912 		     size_t len, int p2p_group, struct wpabuf *p2p_ie);
1913 
1914 /**
1915  * p2p_scan_ie - Build P2P IE for Probe Request
1916  * @p2p: P2P module context from p2p_init()
1917  * @ies: Buffer for writing P2P IE
1918  * @dev_id: Device ID to search for or %NULL for any
1919  * @bands: Frequency bands used in the scan (enum wpa_radio_work_band bitmap)
1920  */
1921 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
1922 		 unsigned int bands);
1923 
1924 /**
1925  * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie
1926  * @p2p: P2P module context from p2p_init()
1927  * Returns: Number of octets that p2p_scan_ie() may add to the buffer
1928  */
1929 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p);
1930 
1931 /**
1932  * p2p_go_params - Generate random P2P group parameters
1933  * @p2p: P2P module context from p2p_init()
1934  * @params: Buffer for parameters
1935  * Returns: 0 on success, -1 on failure
1936  */
1937 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params);
1938 
1939 /**
1940  * p2p_get_group_capab - Get Group Capability from P2P IE data
1941  * @p2p_ie: P2P IE(s) contents
1942  * Returns: Group Capability
1943  */
1944 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie);
1945 
1946 /**
1947  * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection
1948  * @p2p_ie: P2P IE(s) contents
1949  * Returns: 0 if cross connection is allow, 1 if not
1950  */
1951 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie);
1952 
1953 /**
1954  * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data
1955  * @p2p_ie: P2P IE(s) contents
1956  * Returns: Pointer to P2P Device Address or %NULL if not included
1957  */
1958 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);
1959 
1960 /**
1961  * p2p_get_peer_info - Get P2P peer information
1962  * @p2p: P2P module context from p2p_init()
1963  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
1964  * @next: Whether to select the peer entry following the one indicated by addr
1965  * Returns: Pointer to peer info or %NULL if not found
1966  */
1967 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
1968 					       const u8 *addr, int next);
1969 
1970 /**
1971  * p2p_get_peer_info_txt - Get internal P2P peer information in text format
1972  * @info: Pointer to P2P peer info from p2p_get_peer_info()
1973  * @buf: Buffer for returning text
1974  * @buflen: Maximum buffer length
1975  * Returns: Number of octets written to the buffer or -1 on failure
1976  *
1977  * Note: This information is internal to the P2P module and subject to change.
1978  * As such, this should not really be used by external programs for purposes
1979  * other than debugging.
1980  */
1981 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
1982 			  char *buf, size_t buflen);
1983 
1984 /**
1985  * p2p_peer_known - Check whether P2P peer is known
1986  * @p2p: P2P module context from p2p_init()
1987  * @addr: P2P Device Address of the peer
1988  * Returns: 1 if the specified device is in the P2P peer table or 0 if not
1989  */
1990 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr);
1991 
1992 /**
1993  * p2p_set_client_discoverability - Set client discoverability capability
1994  * @p2p: P2P module context from p2p_init()
1995  * @enabled: Whether client discoverability will be enabled
1996  *
1997  * This function can be used to disable (and re-enable) client discoverability.
1998  * This capability is enabled by default and should not be disabled in normal
1999  * use cases, i.e., this is mainly for testing purposes.
2000  */
2001 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);
2002 
2003 /**
2004  * p2p_set_managed_oper - Set managed P2P Device operations capability
2005  * @p2p: P2P module context from p2p_init()
2006  * @enabled: Whether managed P2P Device operations will be enabled
2007  */
2008 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled);
2009 
2010 /**
2011  * p2p_config_get_random_social - Return a random social channel
2012  * @p2p: P2P config
2013  * @op_class: Selected operating class
2014  * @op_channel: Selected social channel
2015  * @avoid_list: Channel ranges to try to avoid or %NULL
2016  * @disallow_list: Channel ranges to discard or %NULL
2017  * Returns: 0 on success, -1 on failure
2018  *
2019  * This function is used before p2p_init is called. A random social channel
2020  * from supports bands 2.4 GHz (channels 1,6,11) and 60 GHz (channel 2) is
2021  * returned on success.
2022  */
2023 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
2024 				 u8 *op_channel,
2025 				 struct wpa_freq_range_list *avoid_list,
2026 				 struct wpa_freq_range_list *disallow_list);
2027 
2028 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
2029 			   u8 forced);
2030 
2031 u8 p2p_get_listen_channel(struct p2p_data *p2p);
2032 
2033 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len);
2034 
2035 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
2036 			   u8 *iface_addr);
2037 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
2038 			   u8 *dev_addr);
2039 
2040 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr);
2041 
2042 /**
2043  * p2p_set_cross_connect - Set cross connection capability
2044  * @p2p: P2P module context from p2p_init()
2045  * @enabled: Whether cross connection will be enabled
2046  */
2047 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled);
2048 
2049 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr);
2050 
2051 /**
2052  * p2p_set_intra_bss_dist - Set intra BSS distribution
2053  * @p2p: P2P module context from p2p_init()
2054  * @enabled: Whether intra BSS distribution will be enabled
2055  */
2056 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled);
2057 
2058 int p2p_channels_includes_freq(const struct p2p_channels *channels,
2059 			       unsigned int freq);
2060 
2061 int p2p_channels_to_freqs(const struct p2p_channels *channels,
2062 			  int *freq_list, unsigned int max_len);
2063 
2064 /**
2065  * p2p_supported_freq - Check whether channel is supported for P2P
2066  * @p2p: P2P module context from p2p_init()
2067  * @freq: Channel frequency in MHz
2068  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2069  */
2070 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq);
2071 
2072 /**
2073  * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation
2074  * @p2p: P2P module context from p2p_init()
2075  * @freq: Channel frequency in MHz
2076  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2077  */
2078 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq);
2079 
2080 /**
2081  * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation
2082  * @p2p: P2P module context from p2p_init()
2083  * @freq: Channel frequency in MHz
2084  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2085  */
2086 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq);
2087 
2088 /**
2089  * p2p_get_pref_freq - Get channel from preferred channel list
2090  * @p2p: P2P module context from p2p_init()
2091  * @channels: List of channels
2092  * Returns: Preferred channel
2093  */
2094 unsigned int p2p_get_pref_freq(struct p2p_data *p2p,
2095 			       const struct p2p_channels *channels);
2096 
2097 void p2p_update_channel_list(struct p2p_data *p2p,
2098 			     const struct p2p_channels *chan,
2099 			     const struct p2p_channels *cli_chan);
2100 
2101 /**
2102  * p2p_set_best_channels - Update best channel information
2103  * @p2p: P2P module context from p2p_init()
2104  * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band
2105  * @freq_5: Frequency (MHz) of best channel in 5 GHz band
2106  * @freq_overall: Frequency (MHz) of best channel overall
2107  */
2108 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
2109 			   int freq_overall);
2110 
2111 /**
2112  * p2p_set_own_freq_preference - Set own preference for channel
2113  * @p2p: P2P module context from p2p_init()
2114  * @freq: Frequency (MHz) of the preferred channel or 0 if no preference
2115  *
2116  * This function can be used to set a preference on the operating channel based
2117  * on frequencies used on the other virtual interfaces that share the same
2118  * radio. If non-zero, this is used to try to avoid multi-channel concurrency.
2119  */
2120 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq);
2121 
2122 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p);
2123 
2124 /**
2125  * p2p_get_group_num_members - Get number of members in group
2126  * @group: P2P group context from p2p_group_init()
2127  * Returns: Number of members in the group
2128  */
2129 unsigned int p2p_get_group_num_members(struct p2p_group *group);
2130 
2131 /**
2132  * p2p_client_limit_reached - Check if client limit is reached
2133  * @group: P2P group context from p2p_group_init()
2134  * Returns: 1 if no of clients limit reached
2135  */
2136 int p2p_client_limit_reached(struct p2p_group *group);
2137 
2138 /**
2139  * p2p_iterate_group_members - Iterate group members
2140  * @group: P2P group context from p2p_group_init()
2141  * @next: iteration pointer, must be a pointer to a void * that is set to %NULL
2142  *	on the first call and not modified later
2143  * Returns: A P2P Device Address for each call and %NULL for no more members
2144  */
2145 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);
2146 
2147 /**
2148  * p2p_group_get_client_interface_addr - Get P2P Interface Address of a client in a group
2149  * @group: P2P group context from p2p_group_init()
2150  * @dev_addr: P2P Device Address of the client
2151  * Returns: P2P Interface Address of the client if found or %NULL if no match
2152  * found
2153  */
2154 const u8 * p2p_group_get_client_interface_addr(struct p2p_group *group,
2155 					       const u8 *dev_addr);
2156 
2157 /**
2158  * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group
2159  * @group: P2P group context from p2p_group_init()
2160  * @addr: P2P Interface Address of the client
2161  * Returns: P2P Device Address of the client if found or %NULL if no match
2162  * found
2163  */
2164 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);
2165 
2166 /**
2167  * p2p_group_is_client_connected - Check whether a specific client is connected
2168  * @group: P2P group context from p2p_group_init()
2169  * @addr: P2P Device Address of the client
2170  * Returns: 1 if client is connected or 0 if not
2171  */
2172 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr);
2173 
2174 /**
2175  * p2p_group_get_config - Get the group configuration
2176  * @group: P2P group context from p2p_group_init()
2177  * Returns: The group configuration pointer
2178  */
2179 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group);
2180 
2181 /**
2182  * p2p_loop_on_all_groups - Run the given callback on all groups
2183  * @p2p: P2P module context from p2p_init()
2184  * @group_callback: The callback function pointer
2185  * @user_data: Some user data pointer which can be %NULL
2186  *
2187  * The group_callback function can stop the iteration by returning 0.
2188  */
2189 void p2p_loop_on_all_groups(struct p2p_data *p2p,
2190 			    int (*group_callback)(struct p2p_group *group,
2191 						  void *user_data),
2192 			    void *user_data);
2193 
2194 /**
2195  * p2p_get_peer_found - Get P2P peer info structure of a found peer
2196  * @p2p: P2P module context from p2p_init()
2197  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
2198  * @next: Whether to select the peer entry following the one indicated by addr
2199  * Returns: The first P2P peer info available or %NULL if no such peer exists
2200  */
2201 const struct p2p_peer_info *
2202 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next);
2203 
2204 /**
2205  * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions
2206  * @p2p: P2P module context from p2p_init()
2207  */
2208 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);
2209 
2210 /**
2211  * p2p_add_wps_vendor_extension - Add a WPS vendor extension
2212  * @p2p: P2P module context from p2p_init()
2213  * @vendor_ext: The vendor extensions to add
2214  * Returns: 0 on success, -1 on failure
2215  *
2216  * The wpabuf structures in the array are owned by the P2P
2217  * module after this call.
2218  */
2219 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2220 				 const struct wpabuf *vendor_ext);
2221 
2222 /**
2223  * p2p_set_oper_channel - Set the P2P operating channel
2224  * @p2p: P2P module context from p2p_init()
2225  * @op_reg_class: Operating regulatory class to set
2226  * @op_channel: operating channel to set
2227  * @cfg_op_channel : Whether op_channel is hardcoded in configuration
2228  * Returns: 0 on success, -1 on failure
2229  */
2230 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
2231 			 int cfg_op_channel);
2232 
2233 /**
2234  * p2p_set_pref_chan - Set P2P preferred channel list
2235  * @p2p: P2P module context from p2p_init()
2236  * @num_pref_chan: Number of entries in pref_chan list
2237  * @pref_chan: Preferred channels or %NULL to remove preferences
2238  * Returns: 0 on success, -1 on failure
2239  */
2240 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
2241 		      const struct p2p_channel *pref_chan);
2242 
2243 /**
2244  * p2p_set_no_go_freq - Set no GO channel ranges
2245  * @p2p: P2P module context from p2p_init()
2246  * @list: Channel ranges or %NULL to remove restriction
2247  * Returns: 0 on success, -1 on failure
2248  */
2249 int p2p_set_no_go_freq(struct p2p_data *p2p,
2250 		       const struct wpa_freq_range_list *list);
2251 
2252 /**
2253  * p2p_in_progress - Check whether a P2P operation is progress
2254  * @p2p: P2P module context from p2p_init()
2255  * Returns: 0 if P2P module is idle, 1 if an operation is in progress but not
2256  * in search state, or 2 if search state operation is in progress
2257  */
2258 int p2p_in_progress(struct p2p_data *p2p);
2259 
2260 const char * p2p_wps_method_text(enum p2p_wps_method method);
2261 
2262 /**
2263  * p2p_set_config_timeout - Set local config timeouts
2264  * @p2p: P2P module context from p2p_init()
2265  * @go_timeout: Time in 10 ms units it takes to start the GO mode
2266  * @client_timeout: Time in 10 ms units it takes to start the client mode
2267  */
2268 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
2269 			    u8 client_timeout);
2270 
2271 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie);
2272 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie);
2273 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie);
2274 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie);
2275 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie);
2276 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie);
2277 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie);
2278 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie);
2279 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
2280 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
2281 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem);
2282 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
2283 				  const struct wpabuf *elem);
2284 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems);
2285 
2286 /**
2287  * p2p_set_disc_int - Set min/max discoverable interval for p2p_find
2288  * @p2p: P2P module context from p2p_init()
2289  * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1
2290  * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3
2291  * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or
2292  *	-1 not to limit
2293  * Returns: 0 on success, or -1 on failure
2294  *
2295  * This function can be used to configure minDiscoverableInterval and
2296  * maxDiscoverableInterval parameters for the Listen state during device
2297  * discovery (p2p_find). A random number of 100 TU units is picked for each
2298  * Listen state iteration from [min_disc_int,max_disc_int] range.
2299  *
2300  * max_disc_tu can be used to further limit the discoverable duration. However,
2301  * it should be noted that use of this parameter is not recommended since it
2302  * would not be compliant with the P2P specification.
2303  */
2304 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
2305 		     int max_disc_tu);
2306 
2307 /**
2308  * p2p_get_state_txt - Get current P2P state for debug purposes
2309  * @p2p: P2P module context from p2p_init()
2310  * Returns: Name of the current P2P module state
2311  *
2312  * It should be noted that the P2P module state names are internal information
2313  * and subject to change at any point, i.e., this information should be used
2314  * mainly for debugging purposes.
2315  */
2316 const char * p2p_get_state_txt(struct p2p_data *p2p);
2317 
2318 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
2319 					   int client_freq,
2320 					   const u8 *go_dev_addr,
2321 					   const u8 *ssid, size_t ssid_len);
2322 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
2323 					   int client_freq,
2324 					   const u8 *go_dev_addr,
2325 					   const u8 *ssid, size_t ssid_len);
2326 
2327 struct p2p_nfc_params {
2328 	int sel;
2329 	const u8 *wsc_attr;
2330 	size_t wsc_len;
2331 	const u8 *p2p_attr;
2332 	size_t p2p_len;
2333 
2334 	enum {
2335 		NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG,
2336 		BOTH_GO, PEER_CLIENT
2337 	} next_step;
2338 	struct p2p_peer_info *peer;
2339 	u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 +
2340 		      WPS_OOB_DEVICE_PASSWORD_LEN];
2341 	size_t oob_dev_pw_len;
2342 	int go_freq;
2343 	u8 go_dev_addr[ETH_ALEN];
2344 	u8 go_ssid[SSID_MAX_LEN];
2345 	size_t go_ssid_len;
2346 };
2347 
2348 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
2349 					struct p2p_nfc_params *params);
2350 
2351 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
2352 				      int go_intent,
2353 				      const u8 *own_interface_addr);
2354 
2355 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len);
2356 
2357 void p2p_loop_on_known_peers(struct p2p_data *p2p,
2358 			     void (*peer_callback)(struct p2p_peer_info *peer,
2359 						   void *user_data),
2360 			     void *user_data);
2361 
2362 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem);
2363 
2364 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr);
2365 
2366 struct p2ps_advertisement *
2367 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id);
2368 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2369 			const char *adv_str, u8 svc_state,
2370 			u16 config_methods, const char *svc_info,
2371 			const u8 *cpt_priority);
2372 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id);
2373 void p2p_service_flush_asp(struct p2p_data *p2p);
2374 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p);
2375 
2376 /**
2377  * p2p_expire_peers - Periodic cleanup function to expire peers
2378  * @p2p: P2P module context from p2p_init()
2379  *
2380  * This is a cleanup function that the entity calling p2p_init() is
2381  * expected to call periodically to clean up expired peer entries.
2382  */
2383 void p2p_expire_peers(struct p2p_data *p2p);
2384 
2385 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
2386 				const unsigned int *pref_freq_list,
2387 				unsigned int size);
2388 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class,
2389 				   u8 chan);
2390 
2391 /**
2392  * p2p_group_get_common_freqs - Get the group common frequencies
2393  * @group: P2P group context from p2p_group_init()
2394  * @common_freqs: On return will hold the group common frequencies
2395  * @num: On return will hold the number of group common frequencies
2396  * Returns: 0 on success, -1 otherwise
2397  */
2398 int p2p_group_get_common_freqs(struct p2p_group *group, int *common_freqs,
2399 			       unsigned int *num);
2400 
2401 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
2402 					      unsigned int freq);
2403 
2404 #endif /* P2P_H */
2405