xref: /freebsd/contrib/wpa/src/p2p/p2p.h (revision 9bc300465e48e19d794d88d0c158a2adb92c7197)
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 struct weighted_pcl;
16 
17 /* P2P ASP Setup Capability */
18 #define P2PS_SETUP_NONE 0
19 #define P2PS_SETUP_NEW BIT(0)
20 #define P2PS_SETUP_CLIENT BIT(1)
21 #define P2PS_SETUP_GROUP_OWNER BIT(2)
22 
23 #define P2PS_WILD_HASH_STR "org.wi-fi.wfds"
24 #define P2PS_HASH_LEN 6
25 #define P2P_MAX_QUERY_HASH 6
26 #define P2PS_FEATURE_CAPAB_CPT_MAX 2
27 
28 /**
29  * P2P_MAX_PREF_CHANNELS - Maximum number of preferred channels
30  */
31 #define P2P_MAX_PREF_CHANNELS 100
32 
33 /**
34  * P2P_MAX_REG_CLASSES - Maximum number of regulatory classes
35  */
36 #define P2P_MAX_REG_CLASSES 15
37 
38 /**
39  * P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class
40  */
41 #define P2P_MAX_REG_CLASS_CHANNELS 60
42 
43 /**
44  * struct p2p_channels - List of supported channels
45  */
46 struct p2p_channels {
47 	/**
48 	 * struct p2p_reg_class - Supported regulatory class
49 	 */
50 	struct p2p_reg_class {
51 		/**
52 		 * reg_class - Regulatory class (IEEE 802.11-2007, Annex J)
53 		 */
54 		u8 reg_class;
55 
56 		/**
57 		 * channel - Supported channels
58 		 */
59 		u8 channel[P2P_MAX_REG_CLASS_CHANNELS];
60 
61 		/**
62 		 * channels - Number of channel entries in use
63 		 */
64 		size_t channels;
65 	} reg_class[P2P_MAX_REG_CLASSES];
66 
67 	/**
68 	 * reg_classes - Number of reg_class entries in use
69 	 */
70 	size_t reg_classes;
71 };
72 
73 enum p2p_wps_method {
74 	WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC, WPS_NFC,
75 	WPS_P2PS
76 };
77 
78 /**
79  * struct p2p_go_neg_results - P2P Group Owner Negotiation results
80  */
81 struct p2p_go_neg_results {
82 	/**
83 	 * status - Negotiation result (Status Code)
84 	 *
85 	 * 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate
86 	 * failed negotiation.
87 	 */
88 	int status;
89 
90 	/**
91 	 * role_go - Whether local end is Group Owner
92 	 */
93 	int role_go;
94 
95 	/**
96 	 * freq - Frequency of the group operational channel in MHz
97 	 */
98 	int freq;
99 
100 	int ht40;
101 
102 	int vht;
103 
104 	int edmg;
105 
106 	u8 max_oper_chwidth;
107 
108 	unsigned int vht_center_freq2;
109 
110 	/**
111 	 * he - Indicates if IEEE 802.11ax HE is enabled
112 	 */
113 	int he;
114 
115 	/**
116 	 * ssid - SSID of the group
117 	 */
118 	u8 ssid[SSID_MAX_LEN];
119 
120 	/**
121 	 * ssid_len - Length of SSID in octets
122 	 */
123 	size_t ssid_len;
124 
125 	/**
126 	 * psk - WPA pre-shared key (256 bits) (GO only)
127 	 */
128 	u8 psk[32];
129 
130 	/**
131 	 * psk_set - Whether PSK field is configured (GO only)
132 	 */
133 	int psk_set;
134 
135 	/**
136 	 * passphrase - WPA2-Personal passphrase for the group (GO only)
137 	 */
138 	char passphrase[64];
139 
140 	/**
141 	 * peer_device_addr - P2P Device Address of the peer
142 	 */
143 	u8 peer_device_addr[ETH_ALEN];
144 
145 	/**
146 	 * peer_interface_addr - P2P Interface Address of the peer
147 	 */
148 	u8 peer_interface_addr[ETH_ALEN];
149 
150 	/**
151 	 * wps_method - WPS method to be used during provisioning
152 	 */
153 	enum p2p_wps_method wps_method;
154 
155 #define P2P_MAX_CHANNELS 50
156 
157 	/**
158 	 * freq_list - Zero-terminated list of possible operational channels
159 	 */
160 	int freq_list[P2P_MAX_CHANNELS];
161 
162 	/**
163 	 * persistent_group - Whether the group should be made persistent
164 	 * 0 = not persistent
165 	 * 1 = persistent group without persistent reconnect
166 	 * 2 = persistent group with persistent reconnect
167 	 */
168 	int persistent_group;
169 
170 	/**
171 	 * peer_config_timeout - Peer configuration timeout (in 10 msec units)
172 	 */
173 	unsigned int peer_config_timeout;
174 };
175 
176 struct p2ps_provision {
177 	/**
178 	 * pd_seeker - P2PS provision discovery seeker role
179 	 */
180 	unsigned int pd_seeker:1;
181 
182 	/**
183 	 * status - Remote returned provisioning status code
184 	 */
185 	int status;
186 
187 	/**
188 	 * adv_id - P2PS Advertisement ID
189 	 */
190 	u32 adv_id;
191 
192 	/**
193 	 * session_id - P2PS Session ID
194 	 */
195 	u32 session_id;
196 
197 	/**
198 	 * method - WPS Method (to be) used to establish session
199 	 */
200 	u16 method;
201 
202 	/**
203 	 * conncap - Connection Capabilities negotiated between P2P peers
204 	 */
205 	u8 conncap;
206 
207 	/**
208 	 * role - Info about the roles to be used for this connection
209 	 */
210 	u8 role;
211 
212 	/**
213 	 * session_mac - MAC address of the peer that started the session
214 	 */
215 	u8 session_mac[ETH_ALEN];
216 
217 	/**
218 	 * adv_mac - MAC address of the peer advertised the service
219 	 */
220 	u8 adv_mac[ETH_ALEN];
221 
222 	/**
223 	 * cpt_mask - Supported Coordination Protocol Transport mask
224 	 *
225 	 * A bitwise mask of supported ASP Coordination Protocol Transports.
226 	 * This property is set together and corresponds with cpt_priority.
227 	 */
228 	u8 cpt_mask;
229 
230 	/**
231 	 * cpt_priority - Coordination Protocol Transport priority list
232 	 *
233 	 * Priorities of supported ASP Coordination Protocol Transports.
234 	 * This property is set together and corresponds with cpt_mask.
235 	 * The CPT priority list is 0 terminated.
236 	 */
237 	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
238 
239 	/**
240 	 * force_freq - The only allowed channel frequency in MHz or 0.
241 	 */
242 	unsigned int force_freq;
243 
244 	/**
245 	 * pref_freq - Preferred operating frequency in MHz or 0.
246 	 */
247 	unsigned int pref_freq;
248 
249 	/**
250 	 * info - Vendor defined extra Provisioning information
251 	 */
252 	char info[0];
253 };
254 
255 struct p2ps_advertisement {
256 	struct p2ps_advertisement *next;
257 
258 	/**
259 	 * svc_info - Pointer to (internal) Service defined information
260 	 */
261 	char *svc_info;
262 
263 	/**
264 	 * id - P2PS Advertisement ID
265 	 */
266 	u32 id;
267 
268 	/**
269 	 * config_methods - WPS Methods which are allowed for this service
270 	 */
271 	u16 config_methods;
272 
273 	/**
274 	 * state - Current state of the service: 0 - Out Of Service, 1-255 Vendor defined
275 	 */
276 	u8 state;
277 
278 	/**
279 	 * auto_accept - Automatically Accept provisioning request if possible.
280 	 */
281 	u8 auto_accept;
282 
283 	/**
284 	 * hash - 6 octet Service Name has to match against incoming Probe Requests
285 	 */
286 	u8 hash[P2PS_HASH_LEN];
287 
288 	/**
289 	 * cpt_mask - supported Coordination Protocol Transport mask
290 	 *
291 	 * A bitwise mask of supported ASP Coordination Protocol Transports.
292 	 * This property is set together and corresponds with cpt_priority.
293 	 */
294 	u8 cpt_mask;
295 
296 	/**
297 	 * cpt_priority - Coordination Protocol Transport priority list
298 	 *
299 	 * Priorities of supported ASP Coordinatin Protocol Transports.
300 	 * This property is set together and corresponds with cpt_mask.
301 	 * The CPT priority list is 0 terminated.
302 	 */
303 	u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];
304 
305 	/**
306 	 * svc_name - NULL Terminated UTF-8 Service Name, and svc_info storage
307 	 */
308 	char svc_name[0];
309 };
310 
311 
312 struct p2p_data;
313 
314 enum p2p_scan_type {
315 	P2P_SCAN_SOCIAL,
316 	P2P_SCAN_FULL,
317 	P2P_SCAN_SPECIFIC,
318 	P2P_SCAN_SOCIAL_PLUS_ONE
319 };
320 
321 #define P2P_MAX_WPS_VENDOR_EXT 10
322 
323 /**
324  * struct p2p_peer_info - P2P peer information
325  */
326 struct p2p_peer_info {
327 	/**
328 	 * p2p_device_addr - P2P Device Address of the peer
329 	 */
330 	u8 p2p_device_addr[ETH_ALEN];
331 
332 	/**
333 	 * pri_dev_type - Primary Device Type
334 	 */
335 	u8 pri_dev_type[8];
336 
337 	/**
338 	 * device_name - Device Name (0..32 octets encoded in UTF-8)
339 	 */
340 	char device_name[WPS_DEV_NAME_MAX_LEN + 1];
341 
342 	/**
343 	 * manufacturer - Manufacturer (0..64 octets encoded in UTF-8)
344 	 */
345 	char manufacturer[WPS_MANUFACTURER_MAX_LEN + 1];
346 
347 	/**
348 	 * model_name - Model Name (0..32 octets encoded in UTF-8)
349 	 */
350 	char model_name[WPS_MODEL_NAME_MAX_LEN + 1];
351 
352 	/**
353 	 * model_number - Model Number (0..32 octets encoded in UTF-8)
354 	 */
355 	char model_number[WPS_MODEL_NUMBER_MAX_LEN + 1];
356 
357 	/**
358 	 * serial_number - Serial Number (0..32 octets encoded in UTF-8)
359 	 */
360 	char serial_number[WPS_SERIAL_NUMBER_MAX_LEN + 1];
361 
362 	/**
363 	 * level - Signal level
364 	 */
365 	int level;
366 
367 	/**
368 	 * config_methods - WPS Configuration Methods
369 	 */
370 	u16 config_methods;
371 
372 	/**
373 	 * dev_capab - Device Capabilities
374 	 */
375 	u8 dev_capab;
376 
377 	/**
378 	 * group_capab - Group Capabilities
379 	 */
380 	u8 group_capab;
381 
382 	/**
383 	 * wps_sec_dev_type_list - WPS secondary device type list
384 	 *
385 	 * This list includes from 0 to 16 Secondary Device Types as indicated
386 	 * by wps_sec_dev_type_list_len (8 * number of types).
387 	 */
388 	u8 wps_sec_dev_type_list[WPS_SEC_DEV_TYPE_MAX_LEN];
389 
390 	/**
391 	 * wps_sec_dev_type_list_len - Length of secondary device type list
392 	 */
393 	size_t wps_sec_dev_type_list_len;
394 
395 	struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
396 
397 	/**
398 	 * wfd_subelems - Wi-Fi Display subelements from WFD IE(s)
399 	 */
400 	struct wpabuf *wfd_subelems;
401 
402 	/**
403 	 * vendor_elems - Unrecognized vendor elements
404 	 *
405 	 * This buffer includes any other vendor element than P2P, WPS, and WFD
406 	 * IE(s) from the frame that was used to discover the peer.
407 	 */
408 	struct wpabuf *vendor_elems;
409 
410 	/**
411 	 * p2ps_instance - P2PS Application Service Info
412 	 */
413 	struct wpabuf *p2ps_instance;
414 };
415 
416 enum p2p_prov_disc_status {
417 	P2P_PROV_DISC_SUCCESS,
418 	P2P_PROV_DISC_TIMEOUT,
419 	P2P_PROV_DISC_REJECTED,
420 	P2P_PROV_DISC_TIMEOUT_JOIN,
421 	P2P_PROV_DISC_INFO_UNAVAILABLE,
422 };
423 
424 struct p2p_channel {
425 	u8 op_class;
426 	u8 chan;
427 };
428 
429 /**
430  * struct p2p_config - P2P configuration
431  *
432  * This configuration is provided to the P2P module during initialization with
433  * p2p_init().
434  */
435 struct p2p_config {
436 	/**
437 	 * country - Country code to use in P2P operations
438 	 */
439 	char country[3];
440 
441 	/**
442 	 * reg_class - Regulatory class for own listen channel
443 	 */
444 	u8 reg_class;
445 
446 	/**
447 	 * channel - Own listen channel
448 	 */
449 	u8 channel;
450 
451 	/**
452 	 * channel_forced - the listen channel was forced by configuration
453 	 *                  or by control interface and cannot be overridden
454 	 */
455 	u8 channel_forced;
456 
457 	/**
458 	 * Regulatory class for own operational channel
459 	 */
460 	u8 op_reg_class;
461 
462 	/**
463 	 * op_channel - Own operational channel
464 	 */
465 	u8 op_channel;
466 
467 	/**
468 	 * cfg_op_channel - Whether op_channel is hardcoded in configuration
469 	 */
470 	u8 cfg_op_channel;
471 
472 	/**
473 	 * channels - Own supported regulatory classes and channels
474 	 *
475 	 * List of supposerted channels per regulatory class. The regulatory
476 	 * classes are defined in IEEE Std 802.11-2007 Annex J and the
477 	 * numbering of the clases depends on the configured country code.
478 	 */
479 	struct p2p_channels channels;
480 
481 	/**
482 	 * cli_channels - Additional client channels
483 	 *
484 	 * This list of channels (if any) will be used when advertising local
485 	 * channels during GO Negotiation or Invitation for the cases where the
486 	 * local end may become the client. This may allow the peer to become a
487 	 * GO on additional channels if it supports these options. The main use
488 	 * case for this is to include passive-scan channels on devices that may
489 	 * not know their current location and have configured most channels to
490 	 * not allow initiation of radition (i.e., another device needs to take
491 	 * master responsibilities).
492 	 */
493 	struct p2p_channels cli_channels;
494 
495 	/**
496 	 * num_pref_chan - Number of pref_chan entries
497 	 */
498 	unsigned int num_pref_chan;
499 
500 	/**
501 	 * pref_chan - Preferred channels for GO Negotiation
502 	 */
503 	struct p2p_channel *pref_chan;
504 
505 	/**
506 	 * p2p_6ghz_disable - Disable 6GHz for P2P operations
507 	 */
508 	bool p2p_6ghz_disable;
509 
510 	/**
511 	 * pri_dev_type - Primary Device Type (see WPS)
512 	 */
513 	u8 pri_dev_type[8];
514 
515 	/**
516 	 * P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types
517 	 */
518 #define P2P_SEC_DEVICE_TYPES 5
519 
520 	/**
521 	 * sec_dev_type - Optional secondary device types
522 	 */
523 	u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
524 
525 	/**
526 	 * num_sec_dev_types - Number of sec_dev_type entries
527 	 */
528 	size_t num_sec_dev_types;
529 
530 	/**
531 	 * dev_addr - P2P Device Address
532 	 */
533 	u8 dev_addr[ETH_ALEN];
534 
535 	/**
536 	 * dev_name - Device Name
537 	 */
538 	char *dev_name;
539 
540 	char *manufacturer;
541 	char *model_name;
542 	char *model_number;
543 	char *serial_number;
544 
545 	u8 uuid[16];
546 	u16 config_methods;
547 
548 	/**
549 	 * concurrent_operations - Whether concurrent operations are supported
550 	 */
551 	int concurrent_operations;
552 
553 	/**
554 	 * max_peers - Maximum number of discovered peers to remember
555 	 *
556 	 * If more peers are discovered, older entries will be removed to make
557 	 * room for the new ones.
558 	 */
559 	size_t max_peers;
560 
561 	/**
562 	 * p2p_intra_bss - Intra BSS communication is supported
563 	 */
564 	int p2p_intra_bss;
565 
566 	/**
567 	 * ssid_postfix - Postfix data to add to the SSID
568 	 *
569 	 * This data will be added to the end of the SSID after the
570 	 * DIRECT-<random two octets> prefix.
571 	 */
572 	u8 ssid_postfix[SSID_MAX_LEN - 9];
573 
574 	/**
575 	 * ssid_postfix_len - Length of the ssid_postfix data
576 	 */
577 	size_t ssid_postfix_len;
578 
579 	/**
580 	 * max_listen - Maximum listen duration in ms
581 	 */
582 	unsigned int max_listen;
583 
584 	/**
585 	 * passphrase_len - Passphrase length (8..63)
586 	 *
587 	 * This parameter controls the length of the random passphrase that is
588 	 * generated at the GO.
589 	 */
590 	unsigned int passphrase_len;
591 
592 	/**
593 	 * cb_ctx - Context to use with callback functions
594 	 */
595 	void *cb_ctx;
596 
597 	/**
598 	 * debug_print - Debug print
599 	 * @ctx: Callback context from cb_ctx
600 	 * @level: Debug verbosity level (MSG_*)
601 	 * @msg: Debug message
602 	 */
603 	void (*debug_print)(void *ctx, int level, const char *msg);
604 
605 
606 	/* Callbacks to request lower layer driver operations */
607 
608 	/**
609 	 * p2p_scan - Request a P2P scan/search
610 	 * @ctx: Callback context from cb_ctx
611 	 * @type: Scan type
612 	 * @freq: Specific frequency (MHz) to scan or 0 for no restriction
613 	 * @num_req_dev_types: Number of requested device types
614 	 * @req_dev_types: Array containing requested device types
615 	 * @dev_id: Device ID to search for or %NULL to find all devices
616 	 * @pw_id: Device Password ID
617 	 * @include_6ghz: Include 6 GHz channels in P2P scan
618 	 * Returns: 0 on success, -1 on failure
619 	 *
620 	 * This callback function is used to request a P2P scan or search
621 	 * operation to be completed. Type type argument specifies which type
622 	 * of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the
623 	 * social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL
624 	 * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC
625 	 * request a scan of a single channel specified by freq.
626 	 * @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels
627 	 * plus one extra channel specified by freq.
628 	 *
629 	 * The full scan is used for the initial scan to find group owners from
630 	 * all. The other types are used during search phase scan of the social
631 	 * channels (with potential variation if the Listen channel of the
632 	 * target peer is known or if other channels are scanned in steps).
633 	 *
634 	 * The scan results are returned after this call by calling
635 	 * p2p_scan_res_handler() for each scan result that has a P2P IE and
636 	 * then calling p2p_scan_res_handled() to indicate that all scan
637 	 * results have been indicated.
638 	 */
639 	int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq,
640 			unsigned int num_req_dev_types,
641 			const u8 *req_dev_types, const u8 *dev_id, u16 pw_id,
642 			bool include_6ghz);
643 
644 	/**
645 	 * send_probe_resp - Transmit a Probe Response frame
646 	 * @ctx: Callback context from cb_ctx
647 	 * @buf: Probe Response frame (including the header and body)
648 	 * @freq: Forced frequency (in MHz) to use or 0.
649 	 * Returns: 0 on success, -1 on failure
650 	 *
651 	 * This function is used to reply to Probe Request frames that were
652 	 * indicated with a call to p2p_probe_req_rx(). The response is to be
653 	 * sent on the same channel, unless otherwise specified, or to be
654 	 * dropped if the driver is not listening to Probe Request frames
655 	 * anymore.
656 	 *
657 	 * Alternatively, the responsibility for building the Probe Response
658 	 * frames in Listen state may be in another system component in which
659 	 * case this function need to be implemented (i.e., the function
660 	 * pointer can be %NULL). The WPS and P2P IEs to be added for Probe
661 	 * Response frames in such a case are available from the
662 	 * start_listen() callback. It should be noted that the received Probe
663 	 * Request frames must be indicated by calling p2p_probe_req_rx() even
664 	 * if this send_probe_resp() is not used.
665 	 */
666 	int (*send_probe_resp)(void *ctx, const struct wpabuf *buf,
667 			       unsigned int freq);
668 
669 	/**
670 	 * send_action - Transmit an Action frame
671 	 * @ctx: Callback context from cb_ctx
672 	 * @freq: Frequency in MHz for the channel on which to transmit
673 	 * @dst: Destination MAC address (Address 1)
674 	 * @src: Source MAC address (Address 2)
675 	 * @bssid: BSSID (Address 3)
676 	 * @buf: Frame body (starting from Category field)
677 	 * @len: Length of buf in octets
678 	 * @wait_time: How many msec to wait for a response frame
679 	 * @scheduled: Return value indicating whether the transmissions was
680 	 *	scheduled to happen once the radio is available
681 	 * Returns: 0 on success, -1 on failure
682 	 *
683 	 * The Action frame may not be transmitted immediately and the status
684 	 * of the transmission must be reported by calling
685 	 * p2p_send_action_cb() once the frame has either been transmitted or
686 	 * it has been dropped due to excessive retries or other failure to
687 	 * transmit.
688 	 */
689 	int (*send_action)(void *ctx, unsigned int freq, const u8 *dst,
690 			   const u8 *src, const u8 *bssid, const u8 *buf,
691 			   size_t len, unsigned int wait_time, int *scheduled);
692 
693 	/**
694 	 * send_action_done - Notify that Action frame sequence was completed
695 	 * @ctx: Callback context from cb_ctx
696 	 *
697 	 * This function is called when the Action frame sequence that was
698 	 * started with send_action() has been completed, i.e., when there is
699 	 * no need to wait for a response from the destination peer anymore.
700 	 */
701 	void (*send_action_done)(void *ctx);
702 
703 	/**
704 	 * start_listen - Start Listen state
705 	 * @ctx: Callback context from cb_ctx
706 	 * @freq: Frequency of the listen channel in MHz
707 	 * @duration: Duration for the Listen state in milliseconds
708 	 * @probe_resp_ie: IE(s) to be added to Probe Response frames
709 	 * Returns: 0 on success, -1 on failure
710 	 *
711 	 * This Listen state may not start immediately since the driver may
712 	 * have other pending operations to complete first. Once the Listen
713 	 * state has started, p2p_listen_cb() must be called to notify the P2P
714 	 * module. Once the Listen state is stopped, p2p_listen_end() must be
715 	 * called to notify the P2P module that the driver is not in the Listen
716 	 * state anymore.
717 	 *
718 	 * If the send_probe_resp() is not used for generating the response,
719 	 * the IEs from probe_resp_ie need to be added to the end of the Probe
720 	 * Response frame body. If send_probe_resp() is used, the probe_resp_ie
721 	 * information can be ignored.
722 	 */
723 	int (*start_listen)(void *ctx, unsigned int freq,
724 			    unsigned int duration,
725 			    const struct wpabuf *probe_resp_ie);
726 	/**
727 	 * stop_listen - Stop Listen state
728 	 * @ctx: Callback context from cb_ctx
729 	 *
730 	 * This callback can be used to stop a Listen state operation that was
731 	 * previously requested with start_listen().
732 	 */
733 	void (*stop_listen)(void *ctx);
734 
735 	/**
736 	 * get_noa - Get current Notice of Absence attribute payload
737 	 * @ctx: Callback context from cb_ctx
738 	 * @interface_addr: P2P Interface Address of the GO
739 	 * @buf: Buffer for returning NoA
740 	 * @buf_len: Buffer length in octets
741 	 * Returns: Number of octets used in buf, 0 to indicate no NoA is being
742 	 * advertized, or -1 on failure
743 	 *
744 	 * This function is used to fetch the current Notice of Absence
745 	 * attribute value from GO.
746 	 */
747 	int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf,
748 		       size_t buf_len);
749 
750 	/* Callbacks to notify events to upper layer management entity */
751 
752 	/**
753 	 * dev_found - Notification of a found P2P Device
754 	 * @ctx: Callback context from cb_ctx
755 	 * @addr: Source address of the message triggering this notification
756 	 * @info: P2P peer information
757 	 * @new_device: Inform if the peer is newly found
758 	 *
759 	 * This callback is used to notify that a new P2P Device has been
760 	 * found. This may happen, e.g., during Search state based on scan
761 	 * results or during Listen state based on receive Probe Request and
762 	 * Group Owner Negotiation Request.
763 	 */
764 	void (*dev_found)(void *ctx, const u8 *addr,
765 			  const struct p2p_peer_info *info,
766 			  int new_device);
767 
768 	/**
769 	 * dev_lost - Notification of a lost P2P Device
770 	 * @ctx: Callback context from cb_ctx
771 	 * @dev_addr: P2P Device Address of the lost P2P Device
772 	 *
773 	 * This callback is used to notify that a P2P Device has been deleted.
774 	 */
775 	void (*dev_lost)(void *ctx, const u8 *dev_addr);
776 
777 	/**
778 	 * find_stopped - Notification of a p2p_find operation stopping
779 	 * @ctx: Callback context from cb_ctx
780 	 */
781 	void (*find_stopped)(void *ctx);
782 
783 	/**
784 	 * go_neg_req_rx - Notification of a receive GO Negotiation Request
785 	 * @ctx: Callback context from cb_ctx
786 	 * @src: Source address of the message triggering this notification
787 	 * @dev_passwd_id: WPS Device Password ID
788 	 * @go_intent: Peer's GO Intent
789 	 *
790 	 * This callback is used to notify that a P2P Device is requesting
791 	 * group owner negotiation with us, but we do not have all the
792 	 * necessary information to start GO Negotiation. This indicates that
793 	 * the local user has not authorized the connection yet by providing a
794 	 * PIN or PBC button press. This information can be provided with a
795 	 * call to p2p_connect().
796 	 */
797 	void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id,
798 			      u8 go_intent);
799 
800 	/**
801 	 * go_neg_completed - Notification of GO Negotiation results
802 	 * @ctx: Callback context from cb_ctx
803 	 * @res: GO Negotiation results
804 	 *
805 	 * This callback is used to notify that Group Owner Negotiation has
806 	 * been completed. Non-zero struct p2p_go_neg_results::status indicates
807 	 * failed negotiation. In case of success, this function is responsible
808 	 * for creating a new group interface (or using the existing interface
809 	 * depending on driver features), setting up the group interface in
810 	 * proper mode based on struct p2p_go_neg_results::role_go and
811 	 * initializing WPS provisioning either as a Registrar (if GO) or as an
812 	 * Enrollee. Successful WPS provisioning must be indicated by calling
813 	 * p2p_wps_success_cb(). The callee is responsible for timing out group
814 	 * formation if WPS provisioning cannot be completed successfully
815 	 * within 15 seconds.
816 	 */
817 	void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res);
818 
819 	/**
820 	 * sd_request - Callback on Service Discovery Request
821 	 * @ctx: Callback context from cb_ctx
822 	 * @freq: Frequency (in MHz) of the channel
823 	 * @sa: Source address of the request
824 	 * @dialog_token: Dialog token
825 	 * @update_indic: Service Update Indicator from the source of request
826 	 * @tlvs: P2P Service Request TLV(s)
827 	 * @tlvs_len: Length of tlvs buffer in octets
828 	 *
829 	 * This callback is used to indicate reception of a service discovery
830 	 * request. Response to the query must be indicated by calling
831 	 * p2p_sd_response() with the context information from the arguments to
832 	 * this callback function.
833 	 *
834 	 * This callback handler can be set to %NULL to indicate that service
835 	 * discovery is not supported.
836 	 */
837 	void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token,
838 			   u16 update_indic, const u8 *tlvs, size_t tlvs_len);
839 
840 	/**
841 	 * sd_response - Callback on Service Discovery Response
842 	 * @ctx: Callback context from cb_ctx
843 	 * @sa: Source address of the request
844 	 * @update_indic: Service Update Indicator from the source of response
845 	 * @tlvs: P2P Service Response TLV(s)
846 	 * @tlvs_len: Length of tlvs buffer in octets
847 	 *
848 	 * This callback is used to indicate reception of a service discovery
849 	 * response. This callback handler can be set to %NULL if no service
850 	 * discovery requests are used. The information provided with this call
851 	 * is replies to the queries scheduled with p2p_sd_request().
852 	 */
853 	void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic,
854 			    const u8 *tlvs, size_t tlvs_len);
855 
856 	/**
857 	 * prov_disc_req - Callback on Provisiong Discovery Request
858 	 * @ctx: Callback context from cb_ctx
859 	 * @peer: Source address of the request
860 	 * @config_methods: Requested WPS Config Method
861 	 * @dev_addr: P2P Device Address of the found P2P Device
862 	 * @pri_dev_type: Primary Device Type
863 	 * @dev_name: Device Name
864 	 * @supp_config_methods: Supported configuration Methods
865 	 * @dev_capab: Device Capabilities
866 	 * @group_capab: Group Capabilities
867 	 * @group_id: P2P Group ID (or %NULL if not included)
868 	 * @group_id_len: Length of P2P Group ID
869 	 *
870 	 * This callback is used to indicate reception of a Provision Discovery
871 	 * Request frame that the P2P module accepted.
872 	 */
873 	void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods,
874 			      const u8 *dev_addr, const u8 *pri_dev_type,
875 			      const char *dev_name, u16 supp_config_methods,
876 			      u8 dev_capab, u8 group_capab,
877 			      const u8 *group_id, size_t group_id_len);
878 
879 	/**
880 	 * prov_disc_resp - Callback on Provisiong Discovery Response
881 	 * @ctx: Callback context from cb_ctx
882 	 * @peer: Source address of the response
883 	 * @config_methods: Value from p2p_prov_disc_req() or 0 on failure
884 	 *
885 	 * This callback is used to indicate reception of a Provision Discovery
886 	 * Response frame for a pending request scheduled with
887 	 * p2p_prov_disc_req(). This callback handler can be set to %NULL if
888 	 * provision discovery is not used.
889 	 */
890 	void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods);
891 
892 	/**
893 	 * prov_disc_fail - Callback on Provision Discovery failure
894 	 * @ctx: Callback context from cb_ctx
895 	 * @peer: Source address of the response
896 	 * @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS
897 	 * @adv_id: If non-zero, then the adv_id of the PD Request
898 	 * @adv_mac: P2P Device Address of the advertizer
899 	 * @deferred_session_resp: Deferred session response sent by advertizer
900 	 *
901 	 * This callback is used to indicate either a failure or no response
902 	 * to an earlier provision discovery request.
903 	 *
904 	 * This callback handler can be set to %NULL if provision discovery
905 	 * is not used or failures do not need to be indicated.
906 	 */
907 	void (*prov_disc_fail)(void *ctx, const u8 *peer,
908 			       enum p2p_prov_disc_status status,
909 			       u32 adv_id, const u8 *adv_mac,
910 			       const char *deferred_session_resp);
911 
912 	/**
913 	 * invitation_process - Optional callback for processing Invitations
914 	 * @ctx: Callback context from cb_ctx
915 	 * @sa: Source address of the Invitation Request
916 	 * @bssid: P2P Group BSSID from the request or %NULL if not included
917 	 * @go_dev_addr: GO Device Address from P2P Group ID
918 	 * @ssid: SSID from P2P Group ID
919 	 * @ssid_len: Length of ssid buffer in octets
920 	 * @go: Variable for returning whether the local end is GO in the group
921 	 * @group_bssid: Buffer for returning P2P Group BSSID (if local end GO)
922 	 * @force_freq: Variable for returning forced frequency for the group
923 	 * @persistent_group: Whether this is an invitation to reinvoke a
924 	 *	persistent group (instead of invitation to join an active
925 	 *	group)
926 	 * @channels: Available operating channels for the group
927 	 * @dev_pw_id: Device Password ID for NFC static handover or -1 if not
928 	 *	used
929 	 * Returns: Status code (P2P_SC_*)
930 	 *
931 	 * This optional callback can be used to implement persistent reconnect
932 	 * by allowing automatic restarting of persistent groups without user
933 	 * interaction. If this callback is not implemented (i.e., is %NULL),
934 	 * the received Invitation Request frames are replied with
935 	 * %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the
936 	 * invitation_result() callback.
937 	 *
938 	 * If the requested parameters are acceptable and the group is known,
939 	 * %P2P_SC_SUCCESS may be returned. If the requested group is unknown,
940 	 * %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED
941 	 * can be returned if there is not enough data to provide immediate
942 	 * response, i.e., if some sort of user interaction is needed. The
943 	 * invitation_received() callback will be called in that case
944 	 * immediately after this call.
945 	 */
946 	u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid,
947 				 const u8 *go_dev_addr, const u8 *ssid,
948 				 size_t ssid_len, int *go, u8 *group_bssid,
949 				 int *force_freq, int persistent_group,
950 				 const struct p2p_channels *channels,
951 				 int dev_pw_id);
952 
953 	/**
954 	 * invitation_received - Callback on Invitation Request RX
955 	 * @ctx: Callback context from cb_ctx
956 	 * @sa: Source address of the Invitation Request
957 	 * @bssid: P2P Group BSSID or %NULL if not received
958 	 * @ssid: SSID of the group
959 	 * @ssid_len: Length of ssid in octets
960 	 * @go_dev_addr: GO Device Address
961 	 * @status: Response Status
962 	 * @op_freq: Operational frequency for the group
963 	 *
964 	 * This callback is used to indicate sending of an Invitation Response
965 	 * for a received Invitation Request. If status == 0 (success), the
966 	 * upper layer code is responsible for starting the group. status == 1
967 	 * indicates need to get user authorization for the group. Other status
968 	 * values indicate that the invitation request was rejected.
969 	 */
970 	void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid,
971 				    const u8 *ssid, size_t ssid_len,
972 				    const u8 *go_dev_addr, u8 status,
973 				    int op_freq);
974 
975 	/**
976 	 * invitation_result - Callback on Invitation result
977 	 * @ctx: Callback context from cb_ctx
978 	 * @status: Negotiation result (Status Code)
979 	 * @bssid: P2P Group BSSID or %NULL if not received
980 	 * @channels: Available operating channels for the group
981 	 * @addr: Peer address
982 	 * @freq: Frequency (in MHz) indicated during invitation or 0
983 	 * @peer_oper_freq: Operating frequency (in MHz) advertized by the peer
984 	 * during invitation or 0
985 	 *
986 	 * This callback is used to indicate result of an Invitation procedure
987 	 * started with a call to p2p_invite(). The indicated status code is
988 	 * the value received from the peer in Invitation Response with 0
989 	 * (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a
990 	 * local failure in transmitting the Invitation Request.
991 	 */
992 	void (*invitation_result)(void *ctx, int status, const u8 *bssid,
993 				  const struct p2p_channels *channels,
994 				  const u8 *addr, int freq, int peer_oper_freq);
995 
996 	/**
997 	 * go_connected - Check whether we are connected to a GO
998 	 * @ctx: Callback context from cb_ctx
999 	 * @dev_addr: P2P Device Address of a GO
1000 	 * Returns: 1 if we are connected as a P2P client to the specified GO
1001 	 * or 0 if not.
1002 	 */
1003 	int (*go_connected)(void *ctx, const u8 *dev_addr);
1004 
1005 	/**
1006 	 * presence_resp - Callback on Presence Response
1007 	 * @ctx: Callback context from cb_ctx
1008 	 * @src: Source address (GO's P2P Interface Address)
1009 	 * @status: Result of the request (P2P_SC_*)
1010 	 * @noa: Returned NoA value
1011 	 * @noa_len: Length of the NoA buffer in octets
1012 	 */
1013 	void (*presence_resp)(void *ctx, const u8 *src, u8 status,
1014 			      const u8 *noa, size_t noa_len);
1015 
1016 	/**
1017 	 * is_concurrent_session_active - Check whether concurrent session is
1018 	 * active on other virtual interfaces
1019 	 * @ctx: Callback context from cb_ctx
1020 	 * Returns: 1 if concurrent session is active on other virtual interface
1021 	 * or 0 if not.
1022 	 */
1023 	int (*is_concurrent_session_active)(void *ctx);
1024 
1025 	/**
1026 	 * is_p2p_in_progress - Check whether P2P operation is in progress
1027 	 * @ctx: Callback context from cb_ctx
1028 	 * Returns: 1 if P2P operation (e.g., group formation) is in progress
1029 	 * or 0 if not.
1030 	 */
1031 	int (*is_p2p_in_progress)(void *ctx);
1032 
1033 	/**
1034 	 * Determine if we have a persistent group we share with remote peer
1035 	 * and allocate interface for this group if needed
1036 	 * @ctx: Callback context from cb_ctx
1037 	 * @addr: Peer device address to search for
1038 	 * @ssid: Persistent group SSID or %NULL if any
1039 	 * @ssid_len: Length of @ssid
1040 	 * @go_dev_addr: Buffer for returning GO P2P Device Address
1041 	 * @ret_ssid: Buffer for returning group SSID
1042 	 * @ret_ssid_len: Buffer for returning length of @ssid
1043 	 * @intended_iface_addr: Buffer for returning intended iface address
1044 	 * Returns: 1 if a matching persistent group was found, 0 otherwise
1045 	 */
1046 	int (*get_persistent_group)(void *ctx, const u8 *addr, const u8 *ssid,
1047 				    size_t ssid_len, u8 *go_dev_addr,
1048 				    u8 *ret_ssid, size_t *ret_ssid_len,
1049 				    u8 *intended_iface_addr);
1050 
1051 	/**
1052 	 * Get information about a possible local GO role
1053 	 * @ctx: Callback context from cb_ctx
1054 	 * @intended_addr: Buffer for returning intended GO interface address
1055 	 * @ssid: Buffer for returning group SSID
1056 	 * @ssid_len: Buffer for returning length of @ssid
1057 	 * @group_iface: Buffer for returning whether a separate group interface
1058 	 *	would be used
1059 	 * @freq: Variable for returning the current operating frequency of a
1060 	 *	currently running P2P GO.
1061 	 * Returns: 1 if GO info found, 0 otherwise
1062 	 *
1063 	 * This is used to compose New Group settings (SSID, and intended
1064 	 * address) during P2PS provisioning if results of provisioning *might*
1065 	 * result in our being an autonomous GO.
1066 	 */
1067 	int (*get_go_info)(void *ctx, u8 *intended_addr,
1068 			   u8 *ssid, size_t *ssid_len, int *group_iface,
1069 			   unsigned int *freq);
1070 
1071 	/**
1072 	 * remove_stale_groups - Remove stale P2PS groups
1073 	 *
1074 	 * Because P2PS stages *potential* GOs, and remote devices can remove
1075 	 * credentials unilaterally, we need to make sure we don't let stale
1076 	 * unusable groups build up.
1077 	 */
1078 	int (*remove_stale_groups)(void *ctx, const u8 *peer, const u8 *go,
1079 				   const u8 *ssid, size_t ssid_len);
1080 
1081 	/**
1082 	 * p2ps_prov_complete - P2PS provisioning complete
1083 	 *
1084 	 * When P2PS provisioning completes (successfully or not) we must
1085 	 * transmit all of the results to the upper layers.
1086 	 */
1087 	void (*p2ps_prov_complete)(void *ctx, u8 status, const u8 *dev,
1088 				   const u8 *adv_mac, const u8 *ses_mac,
1089 				   const u8 *grp_mac, u32 adv_id, u32 ses_id,
1090 				   u8 conncap, int passwd_id,
1091 				   const u8 *persist_ssid,
1092 				   size_t persist_ssid_size, int response_done,
1093 				   int prov_start, const char *session_info,
1094 				   const u8 *feat_cap, size_t feat_cap_len,
1095 				   unsigned int freq, const u8 *group_ssid,
1096 				   size_t group_ssid_len);
1097 
1098 	/**
1099 	 * prov_disc_resp_cb - Callback for indicating completion of PD Response
1100 	 * @ctx: Callback context from cb_ctx
1101 	 * Returns: 1 if operation was started, 0 otherwise
1102 	 *
1103 	 * This callback can be used to perform any pending actions after
1104 	 * provisioning. It is mainly used for P2PS pending group creation.
1105 	 */
1106 	int (*prov_disc_resp_cb)(void *ctx);
1107 
1108 	/**
1109 	 * p2ps_group_capability - Determine group capability
1110 	 * @ctx: Callback context from cb_ctx
1111 	 * @incoming: Peer requested roles, expressed with P2PS_SETUP_* bitmap.
1112 	 * @role: Local roles, expressed with P2PS_SETUP_* bitmap.
1113 	 * @force_freq: Variable for returning forced frequency for the group.
1114 	 * @pref_freq: Variable for returning preferred frequency for the group.
1115 	 * Returns: P2PS_SETUP_* bitmap of group capability result.
1116 	 *
1117 	 * This function can be used to determine group capability and
1118 	 * frequencies based on information from P2PS PD exchange and the
1119 	 * current state of ongoing groups and driver capabilities.
1120 	 */
1121 	u8 (*p2ps_group_capability)(void *ctx, u8 incoming, u8 role,
1122 				    unsigned int *force_freq,
1123 				    unsigned int *pref_freq);
1124 
1125 	/**
1126 	 * get_pref_freq_list - Get preferred frequency list for an interface
1127 	 * @ctx: Callback context from cb_ctx
1128 	 * @go: Whether the use if for GO role
1129 	 * @len: Length of freq_list in entries (both IN and OUT)
1130 	 * @freq_list: Buffer for returning the preferred frequencies (MHz)
1131 	 * Returns: 0 on success, -1 on failure
1132 	 *
1133 	 * This function can be used to query the preferred frequency list from
1134 	 * the driver specific to a particular interface type.
1135 	 */
1136 	int (*get_pref_freq_list)(void *ctx, int go,
1137 				  unsigned int *len,
1138 				  struct weighted_pcl *freq_list);
1139 };
1140 
1141 
1142 /* P2P module initialization/deinitialization */
1143 
1144 /**
1145  * p2p_init - Initialize P2P module
1146  * @cfg: P2P module configuration
1147  * Returns: Pointer to private data or %NULL on failure
1148  *
1149  * This function is used to initialize global P2P module context (one per
1150  * device). The P2P module will keep a copy of the configuration data, so the
1151  * caller does not need to maintain this structure. However, the callback
1152  * functions and the context parameters to them must be kept available until
1153  * the P2P module is deinitialized with p2p_deinit().
1154  */
1155 struct p2p_data * p2p_init(const struct p2p_config *cfg);
1156 
1157 /**
1158  * p2p_deinit - Deinitialize P2P module
1159  * @p2p: P2P module context from p2p_init()
1160  */
1161 void p2p_deinit(struct p2p_data *p2p);
1162 
1163 /**
1164  * p2p_flush - Flush P2P module state
1165  * @p2p: P2P module context from p2p_init()
1166  *
1167  * This command removes the P2P module state like peer device entries.
1168  */
1169 void p2p_flush(struct p2p_data *p2p);
1170 
1171 /**
1172  * p2p_unauthorize - Unauthorize the specified peer device
1173  * @p2p: P2P module context from p2p_init()
1174  * @addr: P2P peer entry to be unauthorized
1175  * Returns: 0 on success, -1 on failure
1176  *
1177  * This command removes any connection authorization from the specified P2P
1178  * peer device address. This can be used, e.g., to cancel effect of a previous
1179  * p2p_authorize() or p2p_connect() call that has not yet resulted in completed
1180  * GO Negotiation.
1181  */
1182 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr);
1183 
1184 /**
1185  * p2p_set_dev_name - Set device name
1186  * @p2p: P2P module context from p2p_init()
1187  * Returns: 0 on success, -1 on failure
1188  *
1189  * This function can be used to update the P2P module configuration with
1190  * information that was not available at the time of the p2p_init() call.
1191  */
1192 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name);
1193 
1194 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer);
1195 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name);
1196 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number);
1197 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number);
1198 
1199 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods);
1200 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid);
1201 
1202 /**
1203  * p2p_set_pri_dev_type - Set primary device type
1204  * @p2p: P2P module context from p2p_init()
1205  * Returns: 0 on success, -1 on failure
1206  *
1207  * This function can be used to update the P2P module configuration with
1208  * information that was not available at the time of the p2p_init() call.
1209  */
1210 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type);
1211 
1212 /**
1213  * p2p_set_sec_dev_types - Set secondary device types
1214  * @p2p: P2P module context from p2p_init()
1215  * Returns: 0 on success, -1 on failure
1216  *
1217  * This function can be used to update the P2P module configuration with
1218  * information that was not available at the time of the p2p_init() call.
1219  */
1220 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
1221 			  size_t num_dev_types);
1222 
1223 int p2p_set_country(struct p2p_data *p2p, const char *country);
1224 
1225 
1226 /* Commands from upper layer management entity */
1227 
1228 enum p2p_discovery_type {
1229 	P2P_FIND_START_WITH_FULL,
1230 	P2P_FIND_ONLY_SOCIAL,
1231 	P2P_FIND_PROGRESSIVE
1232 };
1233 
1234 /**
1235  * p2p_find - Start P2P Find (Device Discovery)
1236  * @p2p: P2P module context from p2p_init()
1237  * @timeout: Timeout for find operation in seconds or 0 for no timeout
1238  * @type: Device Discovery type
1239  * @num_req_dev_types: Number of requested device types
1240  * @req_dev_types: Requested device types array, must be an array
1241  *	containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no
1242  *	requested device types.
1243  * @dev_id: Device ID to search for or %NULL to find all devices
1244  * @search_delay: Extra delay in milliseconds between search iterations
1245  * @seek_count: Number of ASP Service Strings in the seek_string array
1246  * @seek_string: ASP Service Strings to query for in Probe Requests
1247  * @freq: Requested first scan frequency (in MHz) to modify type ==
1248  *	P2P_FIND_START_WITH_FULL behavior. 0 = Use normal full scan.
1249  *	If p2p_find is already in progress, this parameter is ignored and full
1250  *	scan will be executed.
1251  * @include_6ghz: Include 6 GHz channels in P2P find
1252  * Returns: 0 on success, -1 on failure
1253  */
1254 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1255 	     enum p2p_discovery_type type,
1256 	     unsigned int num_req_dev_types, const u8 *req_dev_types,
1257 	     const u8 *dev_id, unsigned int search_delay,
1258 	     u8 seek_count, const char **seek_string, int freq,
1259 	     bool include_6ghz);
1260 
1261 /**
1262  * p2p_notify_scan_trigger_status - Indicate scan trigger status
1263  * @p2p: P2P module context from p2p_init()
1264  * @status: 0 on success, -1 on failure
1265  */
1266 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status);
1267 
1268 /**
1269  * p2p_stop_find - Stop P2P Find (Device Discovery)
1270  * @p2p: P2P module context from p2p_init()
1271  */
1272 void p2p_stop_find(struct p2p_data *p2p);
1273 
1274 /**
1275  * p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq
1276  * @p2p: P2P module context from p2p_init()
1277  * @freq: Frequency in MHz for next operation
1278  *
1279  * This is like p2p_stop_find(), but Listen state is not stopped if we are
1280  * already on the same frequency.
1281  */
1282 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq);
1283 
1284 /**
1285  * p2p_listen - Start P2P Listen state for specified duration
1286  * @p2p: P2P module context from p2p_init()
1287  * @timeout: Listen state duration in milliseconds
1288  * Returns: 0 on success, -1 on failure
1289  *
1290  * This function can be used to request the P2P module to keep the device
1291  * discoverable on the listen channel for an extended set of time. At least in
1292  * its current form, this is mainly used for testing purposes and may not be of
1293  * much use for normal P2P operations.
1294  */
1295 int p2p_listen(struct p2p_data *p2p, unsigned int timeout);
1296 
1297 /**
1298  * p2p_stop_listen - Stop P2P Listen
1299  * @p2p: P2P module context from p2p_init()
1300  */
1301 void p2p_stop_listen(struct p2p_data *p2p);
1302 
1303 /**
1304  * p2p_connect - Start P2P group formation (GO negotiation)
1305  * @p2p: P2P module context from p2p_init()
1306  * @peer_addr: MAC address of the peer P2P client
1307  * @wps_method: WPS method to be used in provisioning
1308  * @go_intent: Local GO intent value (1..15)
1309  * @own_interface_addr: Intended interface address to use with the group
1310  * @force_freq: The only allowed channel frequency in MHz or 0
1311  * @persistent_group: Whether to create a persistent group (0 = no, 1 =
1312  * persistent group without persistent reconnect, 2 = persistent group with
1313  * persistent reconnect)
1314  * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
1315  *	a new SSID
1316  * @force_ssid_len: Length of $force_ssid buffer
1317  * @pd_before_go_neg: Whether to send Provision Discovery prior to GO
1318  *	Negotiation as an interoperability workaround when initiating group
1319  *	formation
1320  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
1321  *	force_freq == 0)
1322  * Returns: 0 on success, -1 on failure
1323  */
1324 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1325 		enum p2p_wps_method wps_method,
1326 		int go_intent, const u8 *own_interface_addr,
1327 		unsigned int force_freq, int persistent_group,
1328 		const u8 *force_ssid, size_t force_ssid_len,
1329 		int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id);
1330 
1331 /**
1332  * p2p_authorize - Authorize P2P group formation (GO negotiation)
1333  * @p2p: P2P module context from p2p_init()
1334  * @peer_addr: MAC address of the peer P2P client
1335  * @wps_method: WPS method to be used in provisioning
1336  * @go_intent: Local GO intent value (1..15)
1337  * @own_interface_addr: Intended interface address to use with the group
1338  * @force_freq: The only allowed channel frequency in MHz or 0
1339  * @persistent_group: Whether to create a persistent group (0 = no, 1 =
1340  * persistent group without persistent reconnect, 2 = persistent group with
1341  * persistent reconnect)
1342  * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
1343  *	a new SSID
1344  * @force_ssid_len: Length of $force_ssid buffer
1345  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
1346  *	force_freq == 0)
1347  * Returns: 0 on success, -1 on failure
1348  *
1349  * This is like p2p_connect(), but the actual group negotiation is not
1350  * initiated automatically, i.e., the other end is expected to do that.
1351  */
1352 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1353 		  enum p2p_wps_method wps_method,
1354 		  int go_intent, const u8 *own_interface_addr,
1355 		  unsigned int force_freq, int persistent_group,
1356 		  const u8 *force_ssid, size_t force_ssid_len,
1357 		  unsigned int pref_freq, u16 oob_pw_id);
1358 
1359 /**
1360  * p2p_reject - Reject peer device (explicitly block connection attempts)
1361  * @p2p: P2P module context from p2p_init()
1362  * @peer_addr: MAC address of the peer P2P client
1363  * Returns: 0 on success, -1 on failure
1364  */
1365 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr);
1366 
1367 /**
1368  * p2p_prov_disc_req - Send Provision Discovery Request
1369  * @p2p: P2P module context from p2p_init()
1370  * @peer_addr: MAC address of the peer P2P client
1371  * @p2ps_prov: Provisioning info for P2PS
1372  * @config_methods: WPS Config Methods value (only one bit set)
1373  * @join: Whether this is used by a client joining an active group
1374  * @force_freq: Forced TX frequency for the frame (mainly for the join case)
1375  * @user_initiated_pd: Flag to indicate if initiated by user or not
1376  * Returns: 0 on success, -1 on failure
1377  *
1378  * This function can be used to request a discovered P2P peer to display a PIN
1379  * (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us
1380  * (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame
1381  * is transmitted once immediately and if no response is received, the frame
1382  * will be sent again whenever the target device is discovered during device
1383  * dsicovery (start with a p2p_find() call). Response from the peer is
1384  * indicated with the p2p_config::prov_disc_resp() callback.
1385  */
1386 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr,
1387 		      struct p2ps_provision *p2ps_prov, u16 config_methods,
1388 		      int join, int force_freq,
1389 		      int user_initiated_pd);
1390 
1391 /**
1392  * p2p_sd_request - Schedule a service discovery query
1393  * @p2p: P2P module context from p2p_init()
1394  * @dst: Destination peer or %NULL to apply for all peers
1395  * @tlvs: P2P Service Query TLV(s)
1396  * Returns: Reference to the query or %NULL on failure
1397  *
1398  * Response to the query is indicated with the p2p_config::sd_response()
1399  * callback.
1400  */
1401 void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst,
1402 		      const struct wpabuf *tlvs);
1403 
1404 #ifdef CONFIG_WIFI_DISPLAY
1405 void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst,
1406 			  const struct wpabuf *tlvs);
1407 #endif /* CONFIG_WIFI_DISPLAY */
1408 
1409 /**
1410  * p2p_sd_cancel_request - Cancel a pending service discovery query
1411  * @p2p: P2P module context from p2p_init()
1412  * @req: Query reference from p2p_sd_request()
1413  * Returns: 0 if request for cancelled; -1 if not found
1414  */
1415 int p2p_sd_cancel_request(struct p2p_data *p2p, void *req);
1416 
1417 /**
1418  * p2p_sd_response - Send response to a service discovery query
1419  * @p2p: P2P module context from p2p_init()
1420  * @freq: Frequency from p2p_config::sd_request() callback
1421  * @dst: Destination address from p2p_config::sd_request() callback
1422  * @dialog_token: Dialog token from p2p_config::sd_request() callback
1423  * @resp_tlvs: P2P Service Response TLV(s)
1424  *
1425  * This function is called as a response to the request indicated with
1426  * p2p_config::sd_request() callback.
1427  */
1428 void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
1429 		     u8 dialog_token, const struct wpabuf *resp_tlvs);
1430 
1431 /**
1432  * p2p_sd_service_update - Indicate a change in local services
1433  * @p2p: P2P module context from p2p_init()
1434  *
1435  * This function needs to be called whenever there is a change in availability
1436  * of the local services. This will increment the Service Update Indicator
1437  * value which will be used in SD Request and Response frames.
1438  */
1439 void p2p_sd_service_update(struct p2p_data *p2p);
1440 
1441 
1442 enum p2p_invite_role {
1443 	P2P_INVITE_ROLE_GO,
1444 	P2P_INVITE_ROLE_ACTIVE_GO,
1445 	P2P_INVITE_ROLE_CLIENT
1446 };
1447 
1448 /**
1449  * p2p_invite - Invite a P2P Device into a group
1450  * @p2p: P2P module context from p2p_init()
1451  * @peer: Device Address of the peer P2P Device
1452  * @role: Local role in the group
1453  * @bssid: Group BSSID or %NULL if not known
1454  * @ssid: Group SSID
1455  * @ssid_len: Length of ssid in octets
1456  * @force_freq: The only allowed channel frequency in MHz or 0
1457  * @go_dev_addr: Forced GO Device Address or %NULL if none
1458  * @persistent_group: Whether this is to reinvoke a persistent group
1459  * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
1460  *	force_freq == 0)
1461  * @dev_pw_id: Device Password ID from OOB Device Password (NFC) static handover
1462  *	case or -1 if not used
1463  * Returns: 0 on success, -1 on failure
1464  */
1465 int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role,
1466 	       const u8 *bssid, const u8 *ssid, size_t ssid_len,
1467 	       unsigned int force_freq, const u8 *go_dev_addr,
1468 	       int persistent_group, unsigned int pref_freq, int dev_pw_id);
1469 
1470 /**
1471  * p2p_presence_req - Request GO presence
1472  * @p2p: P2P module context from p2p_init()
1473  * @go_interface_addr: GO P2P Interface Address
1474  * @own_interface_addr: Own P2P Interface Address for this group
1475  * @freq: Group operating frequence (in MHz)
1476  * @duration1: Preferred presence duration in microseconds
1477  * @interval1: Preferred presence interval in microseconds
1478  * @duration2: Acceptable presence duration in microseconds
1479  * @interval2: Acceptable presence interval in microseconds
1480  * Returns: 0 on success, -1 on failure
1481  *
1482  * If both duration and interval values are zero, the parameter pair is not
1483  * specified (i.e., to remove Presence Request, use duration1 = interval1 = 0).
1484  */
1485 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
1486 		     const u8 *own_interface_addr, unsigned int freq,
1487 		     u32 duration1, u32 interval1, u32 duration2,
1488 		     u32 interval2);
1489 
1490 /**
1491  * p2p_ext_listen - Set Extended Listen Timing
1492  * @p2p: P2P module context from p2p_init()
1493  * @freq: Group operating frequence (in MHz)
1494  * @period: Availability period in milliseconds (1-65535; 0 to disable)
1495  * @interval: Availability interval in milliseconds (1-65535; 0 to disable)
1496  * Returns: 0 on success, -1 on failure
1497  *
1498  * This function can be used to enable or disable (period = interval = 0)
1499  * Extended Listen Timing. When enabled, the P2P Device will become
1500  * discoverable (go into Listen State) every @interval milliseconds for at
1501  * least @period milliseconds.
1502  */
1503 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
1504 		   unsigned int interval);
1505 
1506 /* Event notifications from upper layer management operations */
1507 
1508 /**
1509  * p2p_wps_success_cb - Report successfully completed WPS provisioning
1510  * @p2p: P2P module context from p2p_init()
1511  * @mac_addr: Peer address
1512  *
1513  * This function is used to report successfully completed WPS provisioning
1514  * during group formation in both GO/Registrar and client/Enrollee roles.
1515  */
1516 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr);
1517 
1518 /**
1519  * p2p_group_formation_failed - Report failed WPS provisioning
1520  * @p2p: P2P module context from p2p_init()
1521  *
1522  * This function is used to report failed group formation. This can happen
1523  * either due to failed WPS provisioning or due to 15 second timeout during
1524  * the provisioning phase.
1525  */
1526 void p2p_group_formation_failed(struct p2p_data *p2p);
1527 
1528 /**
1529  * p2p_get_provisioning_info - Get any stored provisioning info
1530  * @p2p: P2P module context from p2p_init()
1531  * @addr: Peer P2P Device Address
1532  * Returns: WPS provisioning information (WPS config method) or 0 if no
1533  * information is available
1534  *
1535  * This function is used to retrieve stored WPS provisioning info for the given
1536  * peer.
1537  */
1538 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr);
1539 
1540 /**
1541  * p2p_clear_provisioning_info - Clear any stored provisioning info
1542  * @p2p: P2P module context from p2p_init()
1543  * @iface_addr: Peer P2P Device Address
1544  *
1545  * This function is used to clear stored WPS provisioning info for the given
1546  * peer.
1547  */
1548 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr);
1549 
1550 
1551 /* Event notifications from lower layer driver operations */
1552 
1553 /**
1554  * enum p2p_probe_req_status
1555  *
1556  * @P2P_PREQ_MALFORMED: frame was not well-formed
1557  * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored
1558  * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request
1559  * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed
1560  * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P
1561  */
1562 enum p2p_probe_req_status {
1563 	P2P_PREQ_MALFORMED,
1564 	P2P_PREQ_NOT_LISTEN,
1565 	P2P_PREQ_NOT_P2P,
1566 	P2P_PREQ_NOT_PROCESSED,
1567 	P2P_PREQ_PROCESSED
1568 };
1569 
1570 /**
1571  * p2p_probe_req_rx - Report reception of a Probe Request frame
1572  * @p2p: P2P module context from p2p_init()
1573  * @addr: Source MAC address
1574  * @dst: Destination MAC address if available or %NULL
1575  * @bssid: BSSID if available or %NULL
1576  * @ie: Information elements from the Probe Request frame body
1577  * @ie_len: Length of ie buffer in octets
1578  * @rx_freq: Probe Request frame RX frequency
1579  * @p2p_lo_started: Whether P2P Listen Offload is started
1580  * Returns: value indicating the type and status of the probe request
1581  */
1582 enum p2p_probe_req_status
1583 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1584 		 const u8 *bssid, const u8 *ie, size_t ie_len,
1585 		 unsigned int rx_freq, int p2p_lo_started);
1586 
1587 /**
1588  * p2p_rx_action - Report received Action frame
1589  * @p2p: P2P module context from p2p_init()
1590  * @da: Destination address of the received Action frame
1591  * @sa: Source address of the received Action frame
1592  * @bssid: Address 3 of the received Action frame
1593  * @category: Category of the received Action frame
1594  * @data: Action frame body after the Category field
1595  * @len: Length of the data buffer in octets
1596  * @freq: Frequency (in MHz) on which the frame was received
1597  */
1598 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1599 		   const u8 *bssid, u8 category,
1600 		   const u8 *data, size_t len, int freq);
1601 
1602 /**
1603  * p2p_scan_res_handler - Indicate a P2P scan results
1604  * @p2p: P2P module context from p2p_init()
1605  * @bssid: BSSID of the scan result
1606  * @freq: Frequency of the channel on which the device was found in MHz
1607  * @rx_time: Time when the result was received
1608  * @level: Signal level (signal strength of the received Beacon/Probe Response
1609  *	frame)
1610  * @ies: Pointer to IEs from the scan result
1611  * @ies_len: Length of the ies buffer
1612  * Returns: 0 to continue or 1 to stop scan result indication
1613  *
1614  * This function is called to indicate a scan result entry with P2P IE from a
1615  * scan requested with struct p2p_config::p2p_scan(). This can be called during
1616  * the actual scan process (i.e., whenever a new device is found) or as a
1617  * sequence of calls after the full scan has been completed. The former option
1618  * can result in optimized operations, but may not be supported by all
1619  * driver/firmware designs. The ies buffer need to include at least the P2P IE,
1620  * but it is recommended to include all IEs received from the device. The
1621  * caller does not need to check that the IEs contain a P2P IE before calling
1622  * this function since frames will be filtered internally if needed.
1623  *
1624  * This function will return 1 if it wants to stop scan result iteration (and
1625  * scan in general if it is still in progress). This is used to allow faster
1626  * start of a pending operation, e.g., to start a pending GO negotiation.
1627  */
1628 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
1629 			 struct os_reltime *rx_time, int level, const u8 *ies,
1630 			 size_t ies_len);
1631 
1632 /**
1633  * p2p_scan_res_handled - Indicate end of scan results
1634  * @p2p: P2P module context from p2p_init()
1635  * @delay: Search delay for next scan in ms
1636  *
1637  * This function is called to indicate that all P2P scan results from a scan
1638  * have been reported with zero or more calls to p2p_scan_res_handler(). This
1639  * function must be called as a response to successful
1640  * struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler()
1641  * calls stopped iteration.
1642  */
1643 void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay);
1644 
1645 enum p2p_send_action_result {
1646 	P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
1647 	P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */,
1648 	P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
1649 };
1650 
1651 /**
1652  * p2p_send_action_cb - Notify TX status of an Action frame
1653  * @p2p: P2P module context from p2p_init()
1654  * @freq: Channel frequency in MHz
1655  * @dst: Destination MAC address (Address 1)
1656  * @src: Source MAC address (Address 2)
1657  * @bssid: BSSID (Address 3)
1658  * @result: Result of the transmission attempt
1659  *
1660  * This function is used to indicate the result of an Action frame transmission
1661  * that was requested with struct p2p_config::send_action() callback.
1662  */
1663 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
1664 			const u8 *src, const u8 *bssid,
1665 			enum p2p_send_action_result result);
1666 
1667 /**
1668  * p2p_listen_cb - Indicate the start of a requested Listen state
1669  * @p2p: P2P module context from p2p_init()
1670  * @freq: Listen channel frequency in MHz
1671  * @duration: Duration for the Listen state in milliseconds
1672  *
1673  * This function is used to indicate that a Listen state requested with
1674  * struct p2p_config::start_listen() callback has started.
1675  */
1676 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
1677 		   unsigned int duration);
1678 
1679 /**
1680  * p2p_listen_end - Indicate the end of a requested Listen state
1681  * @p2p: P2P module context from p2p_init()
1682  * @freq: Listen channel frequency in MHz
1683  * Returns: 0 if no operations were started, 1 if an operation was started
1684  *
1685  * This function is used to indicate that a Listen state requested with
1686  * struct p2p_config::start_listen() callback has ended.
1687  */
1688 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq);
1689 
1690 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
1691 		      const u8 *ie, size_t ie_len);
1692 
1693 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
1694 			const u8 *ie, size_t ie_len);
1695 
1696 
1697 /* Per-group P2P state for GO */
1698 
1699 struct p2p_group;
1700 
1701 /**
1702  * struct p2p_group_config - P2P group configuration
1703  *
1704  * This configuration is provided to the P2P module during initialization of
1705  * the per-group information with p2p_group_init().
1706  */
1707 struct p2p_group_config {
1708 	/**
1709 	 * persistent_group - Whether the group is persistent
1710 	 * 0 = not a persistent group
1711 	 * 1 = persistent group without persistent reconnect
1712 	 * 2 = persistent group with persistent reconnect
1713 	 */
1714 	int persistent_group;
1715 
1716 	/**
1717 	 * interface_addr - P2P Interface Address of the group
1718 	 */
1719 	u8 interface_addr[ETH_ALEN];
1720 
1721 	/**
1722 	 * max_clients - Maximum number of clients in the group
1723 	 */
1724 	unsigned int max_clients;
1725 
1726 	/**
1727 	 * ssid - Group SSID
1728 	 */
1729 	u8 ssid[SSID_MAX_LEN];
1730 
1731 	/**
1732 	 * ssid_len - Length of SSID
1733 	 */
1734 	size_t ssid_len;
1735 
1736 	/**
1737 	 * freq - Operating channel of the group
1738 	 */
1739 	int freq;
1740 
1741 	/**
1742 	 * ip_addr_alloc - Whether IP address allocation within 4-way handshake
1743 	 *	is supported
1744 	 */
1745 	int ip_addr_alloc;
1746 
1747 	/**
1748 	 * cb_ctx - Context to use with callback functions
1749 	 */
1750 	void *cb_ctx;
1751 
1752 	/**
1753 	 * ie_update - Notification of IE update
1754 	 * @ctx: Callback context from cb_ctx
1755 	 * @beacon_ies: P2P IE for Beacon frames or %NULL if no change
1756 	 * @proberesp_ies: P2P Ie for Probe Response frames
1757 	 *
1758 	 * P2P module uses this callback function to notify whenever the P2P IE
1759 	 * in Beacon or Probe Response frames should be updated based on group
1760 	 * events.
1761 	 *
1762 	 * The callee is responsible for freeing the returned buffer(s) with
1763 	 * wpabuf_free().
1764 	 */
1765 	void (*ie_update)(void *ctx, struct wpabuf *beacon_ies,
1766 			  struct wpabuf *proberesp_ies);
1767 
1768 	/**
1769 	 * idle_update - Notification of changes in group idle state
1770 	 * @ctx: Callback context from cb_ctx
1771 	 * @idle: Whether the group is idle (no associated stations)
1772 	 */
1773 	void (*idle_update)(void *ctx, int idle);
1774 };
1775 
1776 /**
1777  * p2p_group_init - Initialize P2P group
1778  * @p2p: P2P module context from p2p_init()
1779  * @config: P2P group configuration (will be freed by p2p_group_deinit())
1780  * Returns: Pointer to private data or %NULL on failure
1781  *
1782  * This function is used to initialize per-group P2P module context. Currently,
1783  * this is only used to manage GO functionality and P2P clients do not need to
1784  * create an instance of this per-group information.
1785  */
1786 struct p2p_group * p2p_group_init(struct p2p_data *p2p,
1787 				  struct p2p_group_config *config);
1788 
1789 /**
1790  * p2p_group_deinit - Deinitialize P2P group
1791  * @group: P2P group context from p2p_group_init()
1792  */
1793 void p2p_group_deinit(struct p2p_group *group);
1794 
1795 /**
1796  * p2p_group_notif_assoc - Notification of P2P client association with GO
1797  * @group: P2P group context from p2p_group_init()
1798  * @addr: Interface address of the P2P client
1799  * @ie: IEs from the (Re)association Request frame
1800  * @len: Length of the ie buffer in octets
1801  * Returns: 0 on success, -1 on failure
1802  */
1803 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
1804 			  const u8 *ie, size_t len);
1805 
1806 /**
1807  * p2p_group_assoc_resp_ie - Build P2P IE for (re)association response
1808  * @group: P2P group context from p2p_group_init()
1809  * @status: Status value (P2P_SC_SUCCESS if association succeeded)
1810  * Returns: P2P IE for (Re)association Response or %NULL on failure
1811  *
1812  * The caller is responsible for freeing the returned buffer with
1813  * wpabuf_free().
1814  */
1815 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status);
1816 
1817 /**
1818  * p2p_group_notif_disassoc - Notification of P2P client disassociation from GO
1819  * @group: P2P group context from p2p_group_init()
1820  * @addr: Interface address of the P2P client
1821  */
1822 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr);
1823 
1824 /**
1825  * p2p_group_notif_formation_done - Notification of completed group formation
1826  * @group: P2P group context from p2p_group_init()
1827  */
1828 void p2p_group_notif_formation_done(struct p2p_group *group);
1829 
1830 /**
1831  * p2p_group_notif_noa - Notification of NoA change
1832  * @group: P2P group context from p2p_group_init()
1833  * @noa: Notice of Absence attribute payload, %NULL if none
1834  * @noa_len: Length of noa buffer in octets
1835  * Returns: 0 on success, -1 on failure
1836  *
1837  * Notify the P2P group management about a new NoA contents. This will be
1838  * inserted into the P2P IEs in Beacon and Probe Response frames with rest of
1839  * the group information.
1840  */
1841 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
1842 			size_t noa_len);
1843 
1844 /**
1845  * p2p_group_match_dev_type - Match device types in group with requested type
1846  * @group: P2P group context from p2p_group_init()
1847  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1848  * Returns: 1 on match, 0 on mismatch
1849  *
1850  * This function can be used to match the Requested Device Type attribute in
1851  * WPS IE with the device types of a group member for deciding whether a GO
1852  * should reply to a Probe Request frame. Match will be reported if the WPS IE
1853  * is not requested any specific device type.
1854  */
1855 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);
1856 
1857 /**
1858  * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id
1859  */
1860 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p);
1861 
1862 /**
1863  * p2p_group_go_discover - Send GO Discoverability Request to a group client
1864  * @group: P2P group context from p2p_group_init()
1865  * Returns: 0 on success (frame scheduled); -1 if client was not found
1866  */
1867 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id,
1868 			  const u8 *searching_dev, int rx_freq);
1869 
1870 
1871 /* Generic helper functions */
1872 
1873 /**
1874  * p2p_ie_text - Build text format description of P2P IE
1875  * @p2p_ie: P2P IE
1876  * @buf: Buffer for returning text
1877  * @end: Pointer to the end of the buf area
1878  * Returns: Number of octets written to the buffer or -1 on failure
1879  *
1880  * This function can be used to parse P2P IE contents into text format
1881  * field=value lines.
1882  */
1883 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end);
1884 
1885 /**
1886  * p2p_scan_result_text - Build text format description of P2P IE
1887  * @ies: Information elements from scan results
1888  * @ies_len: ies buffer length in octets
1889  * @buf: Buffer for returning text
1890  * @end: Pointer to the end of the buf area
1891  * Returns: Number of octets written to the buffer or -1 on failure
1892  *
1893  * This function can be used to parse P2P IE contents into text format
1894  * field=value lines.
1895  */
1896 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);
1897 
1898 /**
1899  * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated
1900  * P2P IE
1901  * @p2p_ie: P2P IE
1902  * @dev_addr: Buffer for returning P2P Device Address
1903  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
1904  */
1905 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr);
1906 
1907 /**
1908  * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s)
1909  * @ies: Information elements from scan results
1910  * @ies_len: ies buffer length in octets
1911  * @dev_addr: Buffer for returning P2P Device Address
1912  * Returns: 0 on success or -1 if P2P Device Address could not be parsed
1913  */
1914 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr);
1915 
1916 /**
1917  * p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame
1918  * @p2p: P2P module context from p2p_init()
1919  * @bssid: BSSID
1920  * @buf: Buffer for writing the P2P IE
1921  * @len: Maximum buf length in octets
1922  * @p2p_group: Whether this is for association with a P2P GO
1923  * @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none
1924  * Returns: Number of octets written into buf or -1 on failure
1925  */
1926 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1927 		     size_t len, int p2p_group, struct wpabuf *p2p_ie);
1928 
1929 /**
1930  * p2p_scan_ie - Build P2P IE for Probe Request
1931  * @p2p: P2P module context from p2p_init()
1932  * @ies: Buffer for writing P2P IE
1933  * @dev_id: Device ID to search for or %NULL for any
1934  * @bands: Frequency bands used in the scan (enum wpa_radio_work_band bitmap)
1935  */
1936 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
1937 		 unsigned int bands);
1938 
1939 /**
1940  * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie
1941  * @p2p: P2P module context from p2p_init()
1942  * Returns: Number of octets that p2p_scan_ie() may add to the buffer
1943  */
1944 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p);
1945 
1946 /**
1947  * p2p_go_params - Generate random P2P group parameters
1948  * @p2p: P2P module context from p2p_init()
1949  * @params: Buffer for parameters
1950  * Returns: 0 on success, -1 on failure
1951  */
1952 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params);
1953 
1954 /**
1955  * p2p_get_group_capab - Get Group Capability from P2P IE data
1956  * @p2p_ie: P2P IE(s) contents
1957  * Returns: Group Capability
1958  */
1959 u8 p2p_get_group_capab(const struct wpabuf *p2p_ie);
1960 
1961 /**
1962  * p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection
1963  * @p2p_ie: P2P IE(s) contents
1964  * Returns: 0 if cross connection is allow, 1 if not
1965  */
1966 int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie);
1967 
1968 /**
1969  * p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data
1970  * @p2p_ie: P2P IE(s) contents
1971  * Returns: Pointer to P2P Device Address or %NULL if not included
1972  */
1973 const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);
1974 
1975 /**
1976  * p2p_get_peer_info - Get P2P peer information
1977  * @p2p: P2P module context from p2p_init()
1978  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
1979  * @next: Whether to select the peer entry following the one indicated by addr
1980  * Returns: Pointer to peer info or %NULL if not found
1981  */
1982 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
1983 					       const u8 *addr, int next);
1984 
1985 /**
1986  * p2p_get_peer_info_txt - Get internal P2P peer information in text format
1987  * @info: Pointer to P2P peer info from p2p_get_peer_info()
1988  * @buf: Buffer for returning text
1989  * @buflen: Maximum buffer length
1990  * Returns: Number of octets written to the buffer or -1 on failure
1991  *
1992  * Note: This information is internal to the P2P module and subject to change.
1993  * As such, this should not really be used by external programs for purposes
1994  * other than debugging.
1995  */
1996 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
1997 			  char *buf, size_t buflen);
1998 
1999 /**
2000  * p2p_peer_known - Check whether P2P peer is known
2001  * @p2p: P2P module context from p2p_init()
2002  * @addr: P2P Device Address of the peer
2003  * Returns: 1 if the specified device is in the P2P peer table or 0 if not
2004  */
2005 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr);
2006 
2007 /**
2008  * p2p_set_client_discoverability - Set client discoverability capability
2009  * @p2p: P2P module context from p2p_init()
2010  * @enabled: Whether client discoverability will be enabled
2011  *
2012  * This function can be used to disable (and re-enable) client discoverability.
2013  * This capability is enabled by default and should not be disabled in normal
2014  * use cases, i.e., this is mainly for testing purposes.
2015  */
2016 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);
2017 
2018 /**
2019  * p2p_set_managed_oper - Set managed P2P Device operations capability
2020  * @p2p: P2P module context from p2p_init()
2021  * @enabled: Whether managed P2P Device operations will be enabled
2022  */
2023 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled);
2024 
2025 /**
2026  * p2p_config_get_random_social - Return a random social channel
2027  * @p2p: P2P config
2028  * @op_class: Selected operating class
2029  * @op_channel: Selected social channel
2030  * @avoid_list: Channel ranges to try to avoid or %NULL
2031  * @disallow_list: Channel ranges to discard or %NULL
2032  * Returns: 0 on success, -1 on failure
2033  *
2034  * This function is used before p2p_init is called. A random social channel
2035  * from supports bands 2.4 GHz (channels 1,6,11) and 60 GHz (channel 2) is
2036  * returned on success.
2037  */
2038 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
2039 				 u8 *op_channel,
2040 				 struct wpa_freq_range_list *avoid_list,
2041 				 struct wpa_freq_range_list *disallow_list);
2042 
2043 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
2044 			   u8 forced);
2045 
2046 u8 p2p_get_listen_channel(struct p2p_data *p2p);
2047 
2048 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len);
2049 
2050 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
2051 			   u8 *iface_addr);
2052 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
2053 			   u8 *dev_addr);
2054 
2055 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr);
2056 
2057 /**
2058  * p2p_set_cross_connect - Set cross connection capability
2059  * @p2p: P2P module context from p2p_init()
2060  * @enabled: Whether cross connection will be enabled
2061  */
2062 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled);
2063 
2064 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr);
2065 
2066 /**
2067  * p2p_set_intra_bss_dist - Set intra BSS distribution
2068  * @p2p: P2P module context from p2p_init()
2069  * @enabled: Whether intra BSS distribution will be enabled
2070  */
2071 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled);
2072 
2073 int p2p_channels_includes_freq(const struct p2p_channels *channels,
2074 			       unsigned int freq);
2075 
2076 int p2p_channels_to_freqs(const struct p2p_channels *channels,
2077 			  int *freq_list, unsigned int max_len);
2078 
2079 /**
2080  * p2p_supported_freq - Check whether channel is supported for P2P
2081  * @p2p: P2P module context from p2p_init()
2082  * @freq: Channel frequency in MHz
2083  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2084  */
2085 int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq);
2086 
2087 /**
2088  * p2p_supported_freq_go - Check whether channel is supported for P2P GO operation
2089  * @p2p: P2P module context from p2p_init()
2090  * @freq: Channel frequency in MHz
2091  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2092  */
2093 int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq);
2094 
2095 /**
2096  * p2p_supported_freq_cli - Check whether channel is supported for P2P client operation
2097  * @p2p: P2P module context from p2p_init()
2098  * @freq: Channel frequency in MHz
2099  * Returns: 0 if channel not usable for P2P, 1 if usable for P2P
2100  */
2101 int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq);
2102 
2103 /**
2104  * p2p_get_pref_freq - Get channel from preferred channel list
2105  * @p2p: P2P module context from p2p_init()
2106  * @channels: List of channels
2107  * Returns: Preferred channel
2108  */
2109 unsigned int p2p_get_pref_freq(struct p2p_data *p2p,
2110 			       const struct p2p_channels *channels);
2111 
2112 void p2p_update_channel_list(struct p2p_data *p2p,
2113 			     const struct p2p_channels *chan,
2114 			     const struct p2p_channels *cli_chan);
2115 
2116 bool is_p2p_6ghz_disabled(struct p2p_data *p2p);
2117 
2118 /**
2119  * p2p_set_best_channels - Update best channel information
2120  * @p2p: P2P module context from p2p_init()
2121  * @freq_24: Frequency (MHz) of best channel in 2.4 GHz band
2122  * @freq_5: Frequency (MHz) of best channel in 5 GHz band
2123  * @freq_overall: Frequency (MHz) of best channel overall
2124  */
2125 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
2126 			   int freq_overall);
2127 
2128 /**
2129  * p2p_set_own_freq_preference - Set own preference for channel
2130  * @p2p: P2P module context from p2p_init()
2131  * @freq: Frequency (MHz) of the preferred channel or 0 if no preference
2132  *
2133  * This function can be used to set a preference on the operating channel based
2134  * on frequencies used on the other virtual interfaces that share the same
2135  * radio. If non-zero, this is used to try to avoid multi-channel concurrency.
2136  */
2137 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq);
2138 
2139 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p);
2140 
2141 /**
2142  * p2p_get_group_num_members - Get number of members in group
2143  * @group: P2P group context from p2p_group_init()
2144  * Returns: Number of members in the group
2145  */
2146 unsigned int p2p_get_group_num_members(struct p2p_group *group);
2147 
2148 /**
2149  * p2p_client_limit_reached - Check if client limit is reached
2150  * @group: P2P group context from p2p_group_init()
2151  * Returns: 1 if no of clients limit reached
2152  */
2153 int p2p_client_limit_reached(struct p2p_group *group);
2154 
2155 /**
2156  * p2p_iterate_group_members - Iterate group members
2157  * @group: P2P group context from p2p_group_init()
2158  * @next: iteration pointer, must be a pointer to a void * that is set to %NULL
2159  *	on the first call and not modified later
2160  * Returns: A P2P Device Address for each call and %NULL for no more members
2161  */
2162 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);
2163 
2164 /**
2165  * p2p_group_get_client_interface_addr - Get P2P Interface Address of a client in a group
2166  * @group: P2P group context from p2p_group_init()
2167  * @dev_addr: P2P Device Address of the client
2168  * Returns: P2P Interface Address of the client if found or %NULL if no match
2169  * found
2170  */
2171 const u8 * p2p_group_get_client_interface_addr(struct p2p_group *group,
2172 					       const u8 *dev_addr);
2173 
2174 /**
2175  * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group
2176  * @group: P2P group context from p2p_group_init()
2177  * @addr: P2P Interface Address of the client
2178  * Returns: P2P Device Address of the client if found or %NULL if no match
2179  * found
2180  */
2181 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);
2182 
2183 /**
2184  * p2p_group_is_client_connected - Check whether a specific client is connected
2185  * @group: P2P group context from p2p_group_init()
2186  * @addr: P2P Device Address of the client
2187  * Returns: 1 if client is connected or 0 if not
2188  */
2189 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr);
2190 
2191 /**
2192  * p2p_group_get_config - Get the group configuration
2193  * @group: P2P group context from p2p_group_init()
2194  * Returns: The group configuration pointer
2195  */
2196 const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group);
2197 
2198 /**
2199  * p2p_loop_on_all_groups - Run the given callback on all groups
2200  * @p2p: P2P module context from p2p_init()
2201  * @group_callback: The callback function pointer
2202  * @user_data: Some user data pointer which can be %NULL
2203  *
2204  * The group_callback function can stop the iteration by returning 0.
2205  */
2206 void p2p_loop_on_all_groups(struct p2p_data *p2p,
2207 			    int (*group_callback)(struct p2p_group *group,
2208 						  void *user_data),
2209 			    void *user_data);
2210 
2211 /**
2212  * p2p_get_peer_found - Get P2P peer info structure of a found peer
2213  * @p2p: P2P module context from p2p_init()
2214  * @addr: P2P Device Address of the peer or %NULL to indicate the first peer
2215  * @next: Whether to select the peer entry following the one indicated by addr
2216  * Returns: The first P2P peer info available or %NULL if no such peer exists
2217  */
2218 const struct p2p_peer_info *
2219 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next);
2220 
2221 /**
2222  * p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions
2223  * @p2p: P2P module context from p2p_init()
2224  */
2225 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);
2226 
2227 /**
2228  * p2p_add_wps_vendor_extension - Add a WPS vendor extension
2229  * @p2p: P2P module context from p2p_init()
2230  * @vendor_ext: The vendor extensions to add
2231  * Returns: 0 on success, -1 on failure
2232  *
2233  * The wpabuf structures in the array are owned by the P2P
2234  * module after this call.
2235  */
2236 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2237 				 const struct wpabuf *vendor_ext);
2238 
2239 /**
2240  * p2p_set_oper_channel - Set the P2P operating channel
2241  * @p2p: P2P module context from p2p_init()
2242  * @op_reg_class: Operating regulatory class to set
2243  * @op_channel: operating channel to set
2244  * @cfg_op_channel : Whether op_channel is hardcoded in configuration
2245  * Returns: 0 on success, -1 on failure
2246  */
2247 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
2248 			 int cfg_op_channel);
2249 
2250 /**
2251  * p2p_set_pref_chan - Set P2P preferred channel list
2252  * @p2p: P2P module context from p2p_init()
2253  * @num_pref_chan: Number of entries in pref_chan list
2254  * @pref_chan: Preferred channels or %NULL to remove preferences
2255  * Returns: 0 on success, -1 on failure
2256  */
2257 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
2258 		      const struct p2p_channel *pref_chan);
2259 
2260 /**
2261  * p2p_set_no_go_freq - Set no GO channel ranges
2262  * @p2p: P2P module context from p2p_init()
2263  * @list: Channel ranges or %NULL to remove restriction
2264  * Returns: 0 on success, -1 on failure
2265  */
2266 int p2p_set_no_go_freq(struct p2p_data *p2p,
2267 		       const struct wpa_freq_range_list *list);
2268 
2269 /**
2270  * p2p_in_progress - Check whether a P2P operation is progress
2271  * @p2p: P2P module context from p2p_init()
2272  * Returns: 0 if P2P module is idle, 1 if an operation is in progress but not
2273  * in search state, or 2 if search state operation is in progress
2274  */
2275 int p2p_in_progress(struct p2p_data *p2p);
2276 
2277 const char * p2p_wps_method_text(enum p2p_wps_method method);
2278 
2279 /**
2280  * p2p_set_config_timeout - Set local config timeouts
2281  * @p2p: P2P module context from p2p_init()
2282  * @go_timeout: Time in 10 ms units it takes to start the GO mode
2283  * @client_timeout: Time in 10 ms units it takes to start the client mode
2284  */
2285 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
2286 			    u8 client_timeout);
2287 
2288 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie);
2289 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie);
2290 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie);
2291 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie);
2292 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie);
2293 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie);
2294 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie);
2295 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie);
2296 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
2297 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
2298 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem);
2299 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
2300 				  const struct wpabuf *elem);
2301 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems);
2302 
2303 /**
2304  * p2p_set_disc_int - Set min/max discoverable interval for p2p_find
2305  * @p2p: P2P module context from p2p_init()
2306  * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1
2307  * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3
2308  * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or
2309  *	-1 not to limit
2310  * Returns: 0 on success, or -1 on failure
2311  *
2312  * This function can be used to configure minDiscoverableInterval and
2313  * maxDiscoverableInterval parameters for the Listen state during device
2314  * discovery (p2p_find). A random number of 100 TU units is picked for each
2315  * Listen state iteration from [min_disc_int,max_disc_int] range.
2316  *
2317  * max_disc_tu can be used to further limit the discoverable duration. However,
2318  * it should be noted that use of this parameter is not recommended since it
2319  * would not be compliant with the P2P specification.
2320  */
2321 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
2322 		     int max_disc_tu);
2323 
2324 /**
2325  * p2p_get_state_txt - Get current P2P state for debug purposes
2326  * @p2p: P2P module context from p2p_init()
2327  * Returns: Name of the current P2P module state
2328  *
2329  * It should be noted that the P2P module state names are internal information
2330  * and subject to change at any point, i.e., this information should be used
2331  * mainly for debugging purposes.
2332  */
2333 const char * p2p_get_state_txt(struct p2p_data *p2p);
2334 
2335 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
2336 					   int client_freq,
2337 					   const u8 *go_dev_addr,
2338 					   const u8 *ssid, size_t ssid_len);
2339 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
2340 					   int client_freq,
2341 					   const u8 *go_dev_addr,
2342 					   const u8 *ssid, size_t ssid_len);
2343 
2344 bool p2p_pref_freq_allowed(const struct weighted_pcl *freq_list, bool go);
2345 
2346 struct p2p_nfc_params {
2347 	int sel;
2348 	const u8 *wsc_attr;
2349 	size_t wsc_len;
2350 	const u8 *p2p_attr;
2351 	size_t p2p_len;
2352 
2353 	enum {
2354 		NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG,
2355 		BOTH_GO, PEER_CLIENT
2356 	} next_step;
2357 	struct p2p_peer_info *peer;
2358 	u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 +
2359 		      WPS_OOB_DEVICE_PASSWORD_LEN];
2360 	size_t oob_dev_pw_len;
2361 	int go_freq;
2362 	u8 go_dev_addr[ETH_ALEN];
2363 	u8 go_ssid[SSID_MAX_LEN];
2364 	size_t go_ssid_len;
2365 };
2366 
2367 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
2368 					struct p2p_nfc_params *params);
2369 
2370 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
2371 				      int go_intent,
2372 				      const u8 *own_interface_addr);
2373 
2374 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len);
2375 
2376 void p2p_loop_on_known_peers(struct p2p_data *p2p,
2377 			     void (*peer_callback)(struct p2p_peer_info *peer,
2378 						   void *user_data),
2379 			     void *user_data);
2380 
2381 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem);
2382 
2383 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr);
2384 
2385 struct p2ps_advertisement *
2386 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id);
2387 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2388 			const char *adv_str, u8 svc_state,
2389 			u16 config_methods, const char *svc_info,
2390 			const u8 *cpt_priority);
2391 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id);
2392 void p2p_service_flush_asp(struct p2p_data *p2p);
2393 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p);
2394 
2395 /**
2396  * p2p_expire_peers - Periodic cleanup function to expire peers
2397  * @p2p: P2P module context from p2p_init()
2398  *
2399  * This is a cleanup function that the entity calling p2p_init() is
2400  * expected to call periodically to clean up expired peer entries.
2401  */
2402 void p2p_expire_peers(struct p2p_data *p2p);
2403 
2404 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
2405 				const struct weighted_pcl *pref_freq_list,
2406 				unsigned int size);
2407 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class,
2408 				   u8 chan);
2409 
2410 /**
2411  * p2p_group_get_common_freqs - Get the group common frequencies
2412  * @group: P2P group context from p2p_group_init()
2413  * @common_freqs: On return will hold the group common frequencies
2414  * @num: On return will hold the number of group common frequencies
2415  * Returns: 0 on success, -1 otherwise
2416  */
2417 int p2p_group_get_common_freqs(struct p2p_group *group, int *common_freqs,
2418 			       unsigned int *num);
2419 
2420 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
2421 					      unsigned int freq);
2422 
2423 void p2p_set_6ghz_dev_capab(struct p2p_data *p2p, bool allow_6ghz);
2424 bool is_p2p_6ghz_capable(struct p2p_data *p2p);
2425 bool p2p_is_peer_6ghz_capab(struct p2p_data *p2p, const u8 *addr);
2426 bool p2p_peer_wfd_enabled(struct p2p_data *p2p, const u8 *peer_addr);
2427 bool p2p_wfd_enabled(struct p2p_data *p2p);
2428 bool is_p2p_allow_6ghz(struct p2p_data *p2p);
2429 void set_p2p_allow_6ghz(struct p2p_data *p2p, bool value);
2430 int p2p_remove_6ghz_channels(struct weighted_pcl *pref_freq_list, int size);
2431 int p2p_channel_to_freq(int op_class, int channel);
2432 
2433 #endif /* P2P_H */
2434