2 * P2P - Internal definitions for P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "utils/list.h"
22 * struct p2p_device - P2P Device data (internal to P2P module)
26 struct os_time last_seen;
28 enum p2p_wps_method wps_method;
30 struct p2p_peer_info info;
33 * If the peer was discovered based on an interface address (e.g., GO
34 * from Beacon/Probe Response), the interface address is stored here.
35 * p2p_device_addr must still be set in such a case to the unique
36 * identifier for the P2P Device.
38 u8 interface_addr[ETH_ALEN];
41 * P2P Device Address of the GO in whose group this P2P Device is a
44 u8 member_in_go_dev[ETH_ALEN];
47 * P2P Interface Address of the GO in whose group this P2P Device is a
50 u8 member_in_go_iface[ETH_ALEN];
53 enum p2p_go_state go_state;
55 u8 intended_addr[ETH_ALEN];
58 struct p2p_channels channels;
64 * req_config_methods - Pending provision discovery methods
66 u16 req_config_methods;
69 * wps_prov_info - Stored provisioning WPS config method
71 * This is used to store pending WPS config method between Provisioning
72 * Discovery and connection to a running group.
76 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
77 #define P2P_DEV_REPORTED BIT(1)
78 #define P2P_DEV_NOT_YET_READY BIT(2)
79 #define P2P_DEV_SD_INFO BIT(3)
80 #define P2P_DEV_SD_SCHEDULE BIT(4)
81 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
82 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
83 #define P2P_DEV_USER_REJECTED BIT(7)
84 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
85 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
86 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
87 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
88 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
89 #define P2P_DEV_FORCE_FREQ BIT(13)
90 #define P2P_DEV_PD_FOR_JOIN BIT(14)
91 #define P2P_DEV_REPORTED_ONCE BIT(15)
92 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
93 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
96 int status; /* enum p2p_status_code */
97 unsigned int wait_count;
98 unsigned int connect_reqs;
99 unsigned int invitation_reqs;
101 u16 ext_listen_period;
102 u16 ext_listen_interval;
108 struct p2p_sd_query {
109 struct p2p_sd_query *next;
112 int wsd; /* Wi-Fi Display Service Discovery Request */
116 struct p2p_pending_action_tx {
122 unsigned int wait_time;
123 /* Followed by len octets of the frame */
127 * struct p2p_data - P2P module data (internal to P2P module)
131 * cfg - P2P module configuration
133 * This is included in the same memory allocation with the
134 * struct p2p_data and as such, must not be freed separately.
136 struct p2p_config *cfg;
139 * state - The current P2P state
148 * P2P_SEARCH - Search (Device Discovery)
153 * P2P_CONNECT - Trying to start GO Negotiation
158 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
163 * P2P_GO_NEG - In GO Negotiation
168 * P2P_LISTEN_ONLY - Listen only
173 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
175 P2P_WAIT_PEER_CONNECT,
178 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
183 * P2P_SD_DURING_FIND - Service Discovery during find
188 * P2P_PROVISIONING - Provisioning (during group formation)
193 * P2P_PD_DURING_FIND - Provision Discovery during find
198 * P2P_INVITE - Trying to start Invite
203 * P2P_INVITE_LISTEN - Listen during Invite
208 * P2P_SEARCH_WHEN_READY - Waiting to start Search
210 P2P_SEARCH_WHEN_READY,
213 * P2P_CONTINUE_SEARCH_WHEN_READY - Waiting to continue Search
215 P2P_CONTINUE_SEARCH_WHEN_READY,
219 * min_disc_int - minDiscoverableInterval
224 * max_disc_int - maxDiscoverableInterval
229 * max_disc_tu - Maximum number of TUs for discoverable interval
234 * devices - List of known P2P Device peers
236 struct dl_list devices;
239 * go_neg_peer - Pointer to GO Negotiation peer
241 struct p2p_device *go_neg_peer;
244 * invite_peer - Pointer to Invite peer
246 struct p2p_device *invite_peer;
248 const u8 *invite_go_dev_addr;
249 u8 invite_go_dev_addr_buf[ETH_ALEN];
252 * sd_peer - Pointer to Service Discovery peer
254 struct p2p_device *sd_peer;
257 * sd_query - Pointer to Service Discovery query
259 struct p2p_sd_query *sd_query;
261 /* GO Negotiation data */
264 * intended_addr - Local Intended P2P Interface Address
266 * This address is used during group owner negotiation as the Intended
267 * P2P Interface Address and the group interface will be created with
268 * address as the local address in case of successfully completed
271 u8 intended_addr[ETH_ALEN];
274 * go_intent - Local GO Intent to be used during GO Negotiation
279 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
284 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
289 * ssid_len - ssid length in octets
294 * ssid_set - Whether SSID is already set for GO Negotiation
299 * Regulatory class for own operational channel
304 * op_channel - Own operational channel
309 * channels - Own supported regulatory classes and channels
311 * List of supposerted channels per regulatory class. The regulatory
312 * classes are defined in IEEE Std 802.11-2007 Annex J and the
313 * numbering of the clases depends on the configured country code.
315 struct p2p_channels channels;
317 enum p2p_pending_action_state {
318 P2P_NO_PENDING_ACTION,
319 P2P_PENDING_GO_NEG_REQUEST,
320 P2P_PENDING_GO_NEG_RESPONSE,
321 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
322 P2P_PENDING_GO_NEG_CONFIRM,
325 P2P_PENDING_INVITATION_REQUEST,
326 P2P_PENDING_INVITATION_RESPONSE,
327 P2P_PENDING_DEV_DISC_REQUEST,
328 P2P_PENDING_DEV_DISC_RESPONSE,
329 P2P_PENDING_GO_DISC_REQ
330 } pending_action_state;
332 unsigned int pending_listen_freq;
333 unsigned int pending_listen_sec;
334 unsigned int pending_listen_usec;
342 * sd_queries - Pending service discovery queries
344 struct p2p_sd_query *sd_queries;
347 * srv_update_indic - Service Update Indicator for local services
349 u16 srv_update_indic;
351 struct wpabuf *sd_resp; /* Fragmented SD response */
352 u8 sd_resp_addr[ETH_ALEN];
353 u8 sd_resp_dialog_token;
354 size_t sd_resp_pos; /* Offset in sd_resp */
357 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
358 u16 sd_rx_update_indic;
360 /* P2P Invitation data */
361 enum p2p_invite_role inv_role;
362 u8 inv_bssid[ETH_ALEN];
367 u8 inv_group_bssid[ETH_ALEN];
368 u8 *inv_group_bssid_ptr;
369 u8 inv_go_dev_addr[ETH_ALEN];
374 enum p2p_discovery_type find_type;
375 unsigned int last_p2p_find_timeout;
376 u8 last_prog_scan_class;
377 u8 last_prog_scan_chan;
378 int p2p_scan_running;
379 enum p2p_after_scan {
380 P2P_AFTER_SCAN_NOTHING,
381 P2P_AFTER_SCAN_LISTEN,
382 P2P_AFTER_SCAN_CONNECT
384 u8 after_scan_peer[ETH_ALEN];
385 struct p2p_pending_action_tx *after_scan_tx;
387 /* Requested device types for find/search */
388 unsigned int num_req_dev_types;
391 u8 find_dev_id_buf[ETH_ALEN];
393 struct os_time find_start; /* time of last p2p_find start */
395 struct p2p_group **groups;
398 struct p2p_device *pending_client_disc_go;
399 u8 pending_client_disc_addr[ETH_ALEN];
400 u8 pending_dev_disc_dialog_token;
401 u8 pending_dev_disc_addr[ETH_ALEN];
402 int pending_dev_disc_freq;
403 unsigned int pending_client_disc_freq;
406 unsigned int ext_listen_period;
407 unsigned int ext_listen_interval;
408 unsigned int ext_listen_interval_sec;
409 unsigned int ext_listen_interval_usec;
411 u8 peer_filter[ETH_ALEN];
417 int best_freq_overall;
420 * wps_vendor_ext - WPS Vendor Extensions to add
422 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
425 * user_initiated_pd - Whether a PD request is user initiated or not.
427 u8 user_initiated_pd;
430 * Keep track of which peer a given PD request was sent to.
431 * Used to raise a timeout alert in case there is no response.
433 u8 pending_pd_devaddr[ETH_ALEN];
436 * Retry counter for provision discovery requests when issued
444 /* Extra delay in milliseconds between search iterations */
445 unsigned int search_delay;
448 #ifdef CONFIG_WIFI_DISPLAY
449 struct wpabuf *wfd_ie_beacon;
450 struct wpabuf *wfd_ie_probe_req;
451 struct wpabuf *wfd_ie_probe_resp;
452 struct wpabuf *wfd_ie_assoc_req;
453 struct wpabuf *wfd_ie_invitation;
454 struct wpabuf *wfd_ie_prov_disc_req;
455 struct wpabuf *wfd_ie_prov_disc_resp;
456 struct wpabuf *wfd_ie_go_neg;
457 struct wpabuf *wfd_dev_info;
458 struct wpabuf *wfd_assoc_bssid;
459 struct wpabuf *wfd_coupled_sink_info;
460 #endif /* CONFIG_WIFI_DISPLAY */
464 * struct p2p_message - Parsed P2P message (or P2P IE)
467 struct wpabuf *p2p_attributes;
468 struct wpabuf *wps_attributes;
469 struct wpabuf *wfd_subelems;
473 const u8 *capability;
476 const u8 *listen_channel;
477 const u8 *operating_channel;
478 const u8 *channel_list;
480 const u8 *config_timeout;
481 const u8 *intended_addr;
482 const u8 *group_bssid;
483 const u8 *invitation_flags;
485 const u8 *group_info;
486 size_t group_info_len;
493 const u8 *manageability;
498 const u8 *ext_listen_timing;
500 const u8 *minor_reason_code;
502 /* P2P Device Info */
503 const u8 *p2p_device_info;
504 size_t p2p_device_info_len;
505 const u8 *p2p_device_addr;
506 const u8 *pri_dev_type;
507 u8 num_sec_dev_types;
508 char device_name[33];
513 u16 wps_config_methods;
514 const u8 *wps_pri_dev_type;
515 const u8 *wps_sec_dev_type_list;
516 size_t wps_sec_dev_type_list_len;
517 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
518 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
519 const u8 *manufacturer;
520 size_t manufacturer_len;
521 const u8 *model_name;
522 size_t model_name_len;
523 const u8 *model_number;
524 size_t model_number_len;
525 const u8 *serial_number;
526 size_t serial_number_len;
528 /* DS Parameter Set IE */
536 #define P2P_MAX_GROUP_ENTRIES 50
538 struct p2p_group_info {
539 unsigned int num_clients;
540 struct p2p_client_info {
541 const u8 *p2p_device_addr;
542 const u8 *p2p_interface_addr;
545 const u8 *pri_dev_type;
546 u8 num_sec_dev_types;
547 const u8 *sec_dev_types;
548 const char *dev_name;
550 } client[P2P_MAX_GROUP_ENTRIES];
555 int p2p_random(char *buf, size_t len);
556 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
557 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
559 void p2p_channels_intersect(const struct p2p_channels *a,
560 const struct p2p_channels *b,
561 struct p2p_channels *res);
562 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
566 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
567 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
568 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
569 void p2p_parse_free(struct p2p_message *msg);
570 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
571 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
572 struct p2p_group_info *info);
576 struct p2p_noa_desc {
584 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
585 u8 p2p_group_presence_req(struct p2p_group *group,
586 const u8 *client_interface_addr,
587 const u8 *noa, size_t noa_len);
588 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
589 size_t group_id_len);
590 void p2p_group_update_ies(struct p2p_group *group);
591 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
594 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
595 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
597 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
598 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
599 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
600 struct p2p_device *peer);
601 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
602 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
603 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
604 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
605 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
606 u8 reg_class, u8 channel);
607 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
608 u8 reg_class, u8 channel);
609 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
610 struct p2p_channels *chan);
611 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
613 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
614 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
615 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
616 const u8 *ssid, size_t ssid_len);
617 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
618 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
619 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
620 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
622 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
623 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
627 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
628 struct p2p_device *dev);
629 void p2p_free_sd_queries(struct p2p_data *p2p);
630 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
631 const u8 *data, size_t len, int rx_freq);
632 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
633 const u8 *data, size_t len, int rx_freq);
634 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
635 const u8 *data, size_t len, int rx_freq);
636 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
637 const u8 *data, size_t len, int rx_freq);
638 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
641 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
642 struct p2p_device *dev,
643 const u8 *channel_list, size_t channel_list_len);
644 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
645 const u8 *data, size_t len, int rx_freq);
646 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
647 const u8 *data, size_t len, int rx_freq);
648 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
649 const u8 *data, size_t len);
650 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
651 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
652 void p2p_reselect_channel(struct p2p_data *p2p,
653 struct p2p_channels *intersection);
656 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
657 const u8 *data, size_t len, int rx_freq);
658 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
659 const u8 *data, size_t len);
660 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
661 int join, int force_freq);
662 void p2p_reset_pending_pd(struct p2p_data *p2p);
664 /* p2p_invitation.c */
665 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
666 const u8 *data, size_t len, int rx_freq);
667 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
668 const u8 *data, size_t len);
669 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
670 const u8 *go_dev_addr);
671 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
672 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
675 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
676 const u8 *data, size_t len, int rx_freq);
677 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
678 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
679 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
680 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
681 const u8 *data, size_t len);
682 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
683 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
684 const u8 *data, size_t len, int rx_freq);
687 void p2p_set_state(struct p2p_data *p2p, int new_state);
688 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
690 void p2p_clear_timeout(struct p2p_data *p2p);
691 void p2p_continue_find(struct p2p_data *p2p);
692 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
694 struct p2p_message *msg);
695 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
696 struct p2p_device *dev, struct p2p_message *msg);
697 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
698 struct os_time *rx_time, int level, const u8 *ies,
699 size_t ies_len, int scan_res);
700 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
701 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
703 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
705 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
706 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
707 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
708 size_t num_req_dev_type);
709 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
710 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
711 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
712 const u8 *src, const u8 *bssid, const u8 *buf,
713 size_t len, unsigned int wait_time);
714 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);