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"
15 enum p2p_role_indication;
24 * struct p2p_device - P2P Device data (internal to P2P module)
28 struct os_reltime last_seen;
31 enum p2p_wps_method wps_method;
34 struct p2p_peer_info info;
37 * If the peer was discovered based on an interface address (e.g., GO
38 * from Beacon/Probe Response), the interface address is stored here.
39 * p2p_device_addr must still be set in such a case to the unique
40 * identifier for the P2P Device.
42 u8 interface_addr[ETH_ALEN];
45 * P2P Device Address of the GO in whose group this P2P Device is a
48 u8 member_in_go_dev[ETH_ALEN];
51 * P2P Interface Address of the GO in whose group this P2P Device is a
54 u8 member_in_go_iface[ETH_ALEN];
57 enum p2p_go_state go_state;
60 u8 intended_addr[ETH_ALEN];
63 struct p2p_channels channels;
69 * req_config_methods - Pending provision discovery methods
71 u16 req_config_methods;
74 * wps_prov_info - Stored provisioning WPS config method
76 * This is used to store pending WPS config method between Provisioning
77 * Discovery and connection to a running group.
81 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
82 #define P2P_DEV_REPORTED BIT(1)
83 #define P2P_DEV_NOT_YET_READY BIT(2)
84 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
85 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
86 #define P2P_DEV_USER_REJECTED BIT(7)
87 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
88 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
89 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
90 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
91 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
92 #define P2P_DEV_FORCE_FREQ BIT(13)
93 #define P2P_DEV_PD_FOR_JOIN BIT(14)
94 #define P2P_DEV_REPORTED_ONCE BIT(15)
95 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
96 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
97 #define P2P_DEV_NO_PREF_CHAN BIT(18)
98 #define P2P_DEV_WAIT_INV_REQ_ACK BIT(19)
101 int status; /* enum p2p_status_code */
102 unsigned int wait_count;
103 unsigned int connect_reqs;
104 unsigned int invitation_reqs;
106 u16 ext_listen_period;
107 u16 ext_listen_interval;
111 int sd_pending_bcast_queries;
114 struct p2p_sd_query {
115 struct p2p_sd_query *next;
118 int wsd; /* Wi-Fi Display Service Discovery Request */
122 struct p2p_pending_action_tx {
128 unsigned int wait_time;
129 /* Followed by len octets of the frame */
133 * struct p2p_data - P2P module data (internal to P2P module)
137 * cfg - P2P module configuration
139 * This is included in the same memory allocation with the
140 * struct p2p_data and as such, must not be freed separately.
142 struct p2p_config *cfg;
145 * state - The current P2P state
154 * P2P_SEARCH - Search (Device Discovery)
159 * P2P_CONNECT - Trying to start GO Negotiation
164 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
169 * P2P_GO_NEG - In GO Negotiation
174 * P2P_LISTEN_ONLY - Listen only
179 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
181 P2P_WAIT_PEER_CONNECT,
184 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
189 * P2P_SD_DURING_FIND - Service Discovery during find
194 * P2P_PROVISIONING - Provisioning (during group formation)
199 * P2P_PD_DURING_FIND - Provision Discovery during find
204 * P2P_INVITE - Trying to start Invite
209 * P2P_INVITE_LISTEN - Listen during Invite
215 * min_disc_int - minDiscoverableInterval
220 * max_disc_int - maxDiscoverableInterval
225 * max_disc_tu - Maximum number of TUs for discoverable interval
230 * devices - List of known P2P Device peers
232 struct dl_list devices;
235 * go_neg_peer - Pointer to GO Negotiation peer
237 struct p2p_device *go_neg_peer;
240 * invite_peer - Pointer to Invite peer
242 struct p2p_device *invite_peer;
244 const u8 *invite_go_dev_addr;
245 u8 invite_go_dev_addr_buf[ETH_ALEN];
246 int invite_dev_pw_id;
249 * sd_peer - Pointer to Service Discovery peer
251 struct p2p_device *sd_peer;
254 * sd_query - Pointer to Service Discovery query
256 struct p2p_sd_query *sd_query;
259 * num_p2p_sd_queries - Total number of broadcast SD queries present in
262 int num_p2p_sd_queries;
264 /* GO Negotiation data */
267 * intended_addr - Local Intended P2P Interface Address
269 * This address is used during group owner negotiation as the Intended
270 * P2P Interface Address and the group interface will be created with
271 * address as the local address in case of successfully completed
274 u8 intended_addr[ETH_ALEN];
277 * go_intent - Local GO Intent to be used during GO Negotiation
282 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
287 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
292 * ssid_len - ssid length in octets
297 * ssid_set - Whether SSID is already set for GO Negotiation
302 * Regulatory class for own operational channel
307 * op_channel - Own operational channel
312 * channels - Own supported regulatory classes and channels
314 * List of supposerted channels per regulatory class. The regulatory
315 * classes are defined in IEEE Std 802.11-2007 Annex J and the
316 * numbering of the clases depends on the configured country code.
318 struct p2p_channels channels;
320 struct wpa_freq_range_list no_go_freq;
322 enum p2p_pending_action_state {
323 P2P_NO_PENDING_ACTION,
324 P2P_PENDING_GO_NEG_REQUEST,
325 P2P_PENDING_GO_NEG_RESPONSE,
326 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
327 P2P_PENDING_GO_NEG_CONFIRM,
330 P2P_PENDING_INVITATION_REQUEST,
331 P2P_PENDING_INVITATION_RESPONSE,
332 P2P_PENDING_DEV_DISC_REQUEST,
333 P2P_PENDING_DEV_DISC_RESPONSE,
334 P2P_PENDING_GO_DISC_REQ
335 } pending_action_state;
337 unsigned int pending_listen_freq;
338 unsigned int pending_listen_sec;
339 unsigned int pending_listen_usec;
347 * sd_queries - Pending service discovery queries
349 struct p2p_sd_query *sd_queries;
352 * srv_update_indic - Service Update Indicator for local services
354 u16 srv_update_indic;
356 struct wpabuf *sd_resp; /* Fragmented SD response */
357 u8 sd_resp_addr[ETH_ALEN];
358 u8 sd_resp_dialog_token;
359 size_t sd_resp_pos; /* Offset in sd_resp */
362 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
363 u16 sd_rx_update_indic;
365 /* P2P Invitation data */
366 enum p2p_invite_role inv_role;
367 u8 inv_bssid[ETH_ALEN];
372 u8 inv_group_bssid[ETH_ALEN];
373 u8 *inv_group_bssid_ptr;
374 u8 inv_go_dev_addr[ETH_ALEN];
379 enum p2p_discovery_type find_type;
380 unsigned int last_p2p_find_timeout;
381 u8 last_prog_scan_class;
382 u8 last_prog_scan_chan;
383 int p2p_scan_running;
384 enum p2p_after_scan {
385 P2P_AFTER_SCAN_NOTHING,
386 P2P_AFTER_SCAN_LISTEN,
387 P2P_AFTER_SCAN_CONNECT
389 u8 after_scan_peer[ETH_ALEN];
390 struct p2p_pending_action_tx *after_scan_tx;
391 unsigned int after_scan_tx_in_progress:1;
393 /* Requested device types for find/search */
394 unsigned int num_req_dev_types;
397 u8 find_dev_id_buf[ETH_ALEN];
399 struct os_reltime find_start; /* time of last p2p_find start */
401 struct p2p_group **groups;
404 struct p2p_device *pending_client_disc_go;
405 u8 pending_client_disc_addr[ETH_ALEN];
406 u8 pending_dev_disc_dialog_token;
407 u8 pending_dev_disc_addr[ETH_ALEN];
408 int pending_dev_disc_freq;
409 unsigned int pending_client_disc_freq;
412 unsigned int ext_listen_period;
413 unsigned int ext_listen_interval;
414 unsigned int ext_listen_interval_sec;
415 unsigned int ext_listen_interval_usec;
417 u8 peer_filter[ETH_ALEN];
423 int best_freq_overall;
424 int own_freq_preference;
427 * wps_vendor_ext - WPS Vendor Extensions to add
429 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
432 * user_initiated_pd - Whether a PD request is user initiated or not.
434 u8 user_initiated_pd;
437 * Keep track of which peer a given PD request was sent to.
438 * Used to raise a timeout alert in case there is no response.
440 u8 pending_pd_devaddr[ETH_ALEN];
443 * Retry counter for provision discovery requests when issued
449 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
451 * This is is used during PD retries for join-a-group case to use the
452 * correct operating frequency determined from a BSS entry for the GO.
459 /* Extra delay in milliseconds between search iterations */
460 unsigned int search_delay;
463 #ifdef CONFIG_WIFI_DISPLAY
464 struct wpabuf *wfd_ie_beacon;
465 struct wpabuf *wfd_ie_probe_req;
466 struct wpabuf *wfd_ie_probe_resp;
467 struct wpabuf *wfd_ie_assoc_req;
468 struct wpabuf *wfd_ie_invitation;
469 struct wpabuf *wfd_ie_prov_disc_req;
470 struct wpabuf *wfd_ie_prov_disc_resp;
471 struct wpabuf *wfd_ie_go_neg;
472 struct wpabuf *wfd_dev_info;
473 struct wpabuf *wfd_assoc_bssid;
474 struct wpabuf *wfd_coupled_sink_info;
475 #endif /* CONFIG_WIFI_DISPLAY */
477 u16 authorized_oob_dev_pw_id;
481 * struct p2p_message - Parsed P2P message (or P2P IE)
484 struct wpabuf *p2p_attributes;
485 struct wpabuf *wps_attributes;
486 struct wpabuf *wfd_subelems;
490 const u8 *capability;
493 const u8 *listen_channel;
494 const u8 *operating_channel;
495 const u8 *channel_list;
497 const u8 *config_timeout;
498 const u8 *intended_addr;
499 const u8 *group_bssid;
500 const u8 *invitation_flags;
502 const u8 *group_info;
503 size_t group_info_len;
510 const u8 *manageability;
515 const u8 *ext_listen_timing;
517 const u8 *minor_reason_code;
519 const u8 *oob_go_neg_channel;
521 /* P2P Device Info */
522 const u8 *p2p_device_info;
523 size_t p2p_device_info_len;
524 const u8 *p2p_device_addr;
525 const u8 *pri_dev_type;
526 u8 num_sec_dev_types;
527 char device_name[33];
532 int dev_password_id_present;
533 u16 wps_config_methods;
534 const u8 *wps_pri_dev_type;
535 const u8 *wps_sec_dev_type_list;
536 size_t wps_sec_dev_type_list_len;
537 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
538 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
539 const u8 *manufacturer;
540 size_t manufacturer_len;
541 const u8 *model_name;
542 size_t model_name_len;
543 const u8 *model_number;
544 size_t model_number_len;
545 const u8 *serial_number;
546 size_t serial_number_len;
547 const u8 *oob_dev_password;
548 size_t oob_dev_password_len;
550 /* DS Parameter Set IE */
558 #define P2P_MAX_GROUP_ENTRIES 50
560 struct p2p_group_info {
561 unsigned int num_clients;
562 struct p2p_client_info {
563 const u8 *p2p_device_addr;
564 const u8 *p2p_interface_addr;
567 const u8 *pri_dev_type;
568 u8 num_sec_dev_types;
569 const u8 *sec_dev_types;
570 const char *dev_name;
572 } client[P2P_MAX_GROUP_ENTRIES];
577 int p2p_random(char *buf, size_t len);
578 int p2p_channel_to_freq(int op_class, int channel);
579 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
580 void p2p_channels_intersect(const struct p2p_channels *a,
581 const struct p2p_channels *b,
582 struct p2p_channels *res);
583 void p2p_channels_union(const struct p2p_channels *a,
584 const struct p2p_channels *b,
585 struct p2p_channels *res);
586 void p2p_channels_remove_freqs(struct p2p_channels *chan,
587 const struct wpa_freq_range_list *list);
588 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
590 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
591 const struct p2p_channels *chan);
592 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
593 u8 *op_class, u8 *op_channel);
596 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
597 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
598 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
599 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
600 size_t p2p_len, struct p2p_message *msg);
601 void p2p_parse_free(struct p2p_message *msg);
602 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
603 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
604 struct p2p_group_info *info);
608 struct p2p_noa_desc {
616 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
617 u8 p2p_group_presence_req(struct p2p_group *group,
618 const u8 *client_interface_addr,
619 const u8 *noa, size_t noa_len);
620 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
621 size_t group_id_len);
622 void p2p_group_update_ies(struct p2p_group *group);
623 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
624 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
625 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
627 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
628 int p2p_group_get_freq(struct p2p_group *group);
631 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
632 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
634 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
635 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
636 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
637 struct p2p_device *peer);
638 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
639 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
640 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
641 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
642 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
643 u8 reg_class, u8 channel);
644 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
645 u8 reg_class, u8 channel);
646 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
647 struct p2p_channels *chan);
648 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
650 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
651 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
652 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
653 const u8 *ssid, size_t ssid_len);
654 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
655 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
656 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
657 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
659 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
660 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
661 u8 oper_class, u8 channel,
662 enum p2p_role_indication role);
663 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
667 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
668 struct p2p_device *dev);
669 void p2p_free_sd_queries(struct p2p_data *p2p);
670 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
671 const u8 *data, size_t len, int rx_freq);
672 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
673 const u8 *data, size_t len, int rx_freq);
674 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
675 const u8 *data, size_t len, int rx_freq);
676 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
677 const u8 *data, size_t len, int rx_freq);
678 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
681 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
682 struct p2p_device *dev,
683 const u8 *channel_list, size_t channel_list_len);
684 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
685 const u8 *data, size_t len, int rx_freq);
686 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
687 const u8 *data, size_t len, int rx_freq);
688 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
689 const u8 *data, size_t len);
690 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
691 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
692 void p2p_reselect_channel(struct p2p_data *p2p,
693 struct p2p_channels *intersection);
696 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
697 const u8 *data, size_t len, int rx_freq);
698 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
699 const u8 *data, size_t len);
700 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
701 int join, int force_freq);
702 void p2p_reset_pending_pd(struct p2p_data *p2p);
704 /* p2p_invitation.c */
705 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
706 const u8 *data, size_t len, int rx_freq);
707 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
708 const u8 *data, size_t len);
709 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
710 const u8 *go_dev_addr, int dev_pw_id);
711 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
712 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
715 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
716 const u8 *data, size_t len, int rx_freq);
717 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
718 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
719 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
720 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
721 const u8 *data, size_t len);
722 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
723 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
724 const u8 *data, size_t len, int rx_freq);
727 void p2p_set_state(struct p2p_data *p2p, int new_state);
728 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
730 void p2p_clear_timeout(struct p2p_data *p2p);
731 void p2p_continue_find(struct p2p_data *p2p);
732 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
734 struct p2p_message *msg);
735 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
736 struct p2p_device *dev, struct p2p_message *msg);
737 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
738 struct os_reltime *rx_time, int level, const u8 *ies,
739 size_t ies_len, int scan_res);
740 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
741 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
743 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
745 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
746 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
747 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
748 size_t num_req_dev_type);
749 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
750 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
751 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
752 const u8 *src, const u8 *bssid, const u8 *buf,
753 size_t len, unsigned int wait_time);
754 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
755 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
756 unsigned int force_freq, unsigned int pref_freq,
758 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
760 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
762 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)