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;
392 unsigned int send_action_in_progress:1;
394 /* Requested device types for find/search */
395 unsigned int num_req_dev_types;
398 u8 find_dev_id_buf[ETH_ALEN];
400 struct os_reltime find_start; /* time of last p2p_find start */
402 struct p2p_group **groups;
405 struct p2p_device *pending_client_disc_go;
406 u8 pending_client_disc_addr[ETH_ALEN];
407 u8 pending_dev_disc_dialog_token;
408 u8 pending_dev_disc_addr[ETH_ALEN];
409 int pending_dev_disc_freq;
410 unsigned int pending_client_disc_freq;
413 unsigned int ext_listen_period;
414 unsigned int ext_listen_interval;
415 unsigned int ext_listen_interval_sec;
416 unsigned int ext_listen_interval_usec;
418 u8 peer_filter[ETH_ALEN];
424 int best_freq_overall;
425 int own_freq_preference;
428 * wps_vendor_ext - WPS Vendor Extensions to add
430 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
433 * user_initiated_pd - Whether a PD request is user initiated or not.
435 u8 user_initiated_pd;
438 * Keep track of which peer a given PD request was sent to.
439 * Used to raise a timeout alert in case there is no response.
441 u8 pending_pd_devaddr[ETH_ALEN];
444 * Retry counter for provision discovery requests when issued
450 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
452 * This is is used during PD retries for join-a-group case to use the
453 * correct operating frequency determined from a BSS entry for the GO.
460 /* Extra delay in milliseconds between search iterations */
461 unsigned int search_delay;
464 #ifdef CONFIG_WIFI_DISPLAY
465 struct wpabuf *wfd_ie_beacon;
466 struct wpabuf *wfd_ie_probe_req;
467 struct wpabuf *wfd_ie_probe_resp;
468 struct wpabuf *wfd_ie_assoc_req;
469 struct wpabuf *wfd_ie_invitation;
470 struct wpabuf *wfd_ie_prov_disc_req;
471 struct wpabuf *wfd_ie_prov_disc_resp;
472 struct wpabuf *wfd_ie_go_neg;
473 struct wpabuf *wfd_dev_info;
474 struct wpabuf *wfd_assoc_bssid;
475 struct wpabuf *wfd_coupled_sink_info;
476 #endif /* CONFIG_WIFI_DISPLAY */
478 u16 authorized_oob_dev_pw_id;
482 * struct p2p_message - Parsed P2P message (or P2P IE)
485 struct wpabuf *p2p_attributes;
486 struct wpabuf *wps_attributes;
487 struct wpabuf *wfd_subelems;
491 const u8 *capability;
494 const u8 *listen_channel;
495 const u8 *operating_channel;
496 const u8 *channel_list;
498 const u8 *config_timeout;
499 const u8 *intended_addr;
500 const u8 *group_bssid;
501 const u8 *invitation_flags;
503 const u8 *group_info;
504 size_t group_info_len;
511 const u8 *manageability;
516 const u8 *ext_listen_timing;
518 const u8 *minor_reason_code;
520 const u8 *oob_go_neg_channel;
522 /* P2P Device Info */
523 const u8 *p2p_device_info;
524 size_t p2p_device_info_len;
525 const u8 *p2p_device_addr;
526 const u8 *pri_dev_type;
527 u8 num_sec_dev_types;
528 char device_name[33];
533 int dev_password_id_present;
534 u16 wps_config_methods;
535 const u8 *wps_pri_dev_type;
536 const u8 *wps_sec_dev_type_list;
537 size_t wps_sec_dev_type_list_len;
538 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
539 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
540 const u8 *manufacturer;
541 size_t manufacturer_len;
542 const u8 *model_name;
543 size_t model_name_len;
544 const u8 *model_number;
545 size_t model_number_len;
546 const u8 *serial_number;
547 size_t serial_number_len;
548 const u8 *oob_dev_password;
549 size_t oob_dev_password_len;
551 /* DS Parameter Set IE */
559 #define P2P_MAX_GROUP_ENTRIES 50
561 struct p2p_group_info {
562 unsigned int num_clients;
563 struct p2p_client_info {
564 const u8 *p2p_device_addr;
565 const u8 *p2p_interface_addr;
568 const u8 *pri_dev_type;
569 u8 num_sec_dev_types;
570 const u8 *sec_dev_types;
571 const char *dev_name;
573 } client[P2P_MAX_GROUP_ENTRIES];
578 int p2p_random(char *buf, size_t len);
579 int p2p_channel_to_freq(int op_class, int channel);
580 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
581 void p2p_channels_intersect(const struct p2p_channels *a,
582 const struct p2p_channels *b,
583 struct p2p_channels *res);
584 void p2p_channels_union(const struct p2p_channels *a,
585 const struct p2p_channels *b,
586 struct p2p_channels *res);
587 void p2p_channels_remove_freqs(struct p2p_channels *chan,
588 const struct wpa_freq_range_list *list);
589 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
591 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
592 const struct p2p_channels *chan);
593 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
594 u8 *op_class, u8 *op_channel);
595 int p2p_channel_random_social(struct p2p_channels *chans, u8 *op_class,
599 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
600 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
601 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
602 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
603 size_t p2p_len, struct p2p_message *msg);
604 void p2p_parse_free(struct p2p_message *msg);
605 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
606 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
607 struct p2p_group_info *info);
611 struct p2p_noa_desc {
619 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
620 u8 p2p_group_presence_req(struct p2p_group *group,
621 const u8 *client_interface_addr,
622 const u8 *noa, size_t noa_len);
623 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
624 size_t group_id_len);
625 void p2p_group_update_ies(struct p2p_group *group);
626 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
627 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
628 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
630 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
631 int p2p_group_get_freq(struct p2p_group *group);
634 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
635 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
637 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
638 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
639 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
640 struct p2p_device *peer);
641 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
642 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
643 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
644 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
645 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
646 u8 reg_class, u8 channel);
647 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
648 u8 reg_class, u8 channel);
649 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
650 struct p2p_channels *chan);
651 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
653 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
654 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
655 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
656 const u8 *ssid, size_t ssid_len);
657 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
658 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
659 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
660 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
662 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
663 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
664 u8 oper_class, u8 channel,
665 enum p2p_role_indication role);
666 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
670 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
671 struct p2p_device *dev);
672 void p2p_free_sd_queries(struct p2p_data *p2p);
673 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
674 const u8 *data, size_t len, int rx_freq);
675 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
676 const u8 *data, size_t len, int rx_freq);
677 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
678 const u8 *data, size_t len, int rx_freq);
679 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
680 const u8 *data, size_t len, int rx_freq);
681 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
684 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
685 struct p2p_device *dev,
686 const u8 *channel_list, size_t channel_list_len);
687 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
688 const u8 *data, size_t len, int rx_freq);
689 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
690 const u8 *data, size_t len, int rx_freq);
691 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
692 const u8 *data, size_t len);
693 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
694 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
695 void p2p_reselect_channel(struct p2p_data *p2p,
696 struct p2p_channels *intersection);
699 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
700 const u8 *data, size_t len, int rx_freq);
701 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
702 const u8 *data, size_t len);
703 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
704 int join, int force_freq);
705 void p2p_reset_pending_pd(struct p2p_data *p2p);
707 /* p2p_invitation.c */
708 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
709 const u8 *data, size_t len, int rx_freq);
710 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
711 const u8 *data, size_t len);
712 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
713 const u8 *go_dev_addr, int dev_pw_id);
714 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
715 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
718 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
719 const u8 *data, size_t len, int rx_freq);
720 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
721 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
722 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
723 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
724 const u8 *data, size_t len);
725 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
726 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
727 const u8 *data, size_t len, int rx_freq);
730 void p2p_set_state(struct p2p_data *p2p, int new_state);
731 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
733 void p2p_clear_timeout(struct p2p_data *p2p);
734 void p2p_continue_find(struct p2p_data *p2p);
735 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
737 struct p2p_message *msg);
738 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
739 struct p2p_device *dev, struct p2p_message *msg);
740 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
741 struct os_reltime *rx_time, int level, const u8 *ies,
742 size_t ies_len, int scan_res);
743 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
744 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
746 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
748 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
749 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
750 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
751 size_t num_req_dev_type);
752 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
753 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
754 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
755 const u8 *src, const u8 *bssid, const u8 *buf,
756 size_t len, unsigned int wait_time);
757 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
758 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
759 unsigned int force_freq, unsigned int pref_freq,
761 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
763 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
765 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)