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;
30 enum p2p_wps_method wps_method;
32 struct p2p_peer_info info;
35 * If the peer was discovered based on an interface address (e.g., GO
36 * from Beacon/Probe Response), the interface address is stored here.
37 * p2p_device_addr must still be set in such a case to the unique
38 * identifier for the P2P Device.
40 u8 interface_addr[ETH_ALEN];
43 * P2P Device Address of the GO in whose group this P2P Device is a
46 u8 member_in_go_dev[ETH_ALEN];
49 * P2P Interface Address of the GO in whose group this P2P Device is a
52 u8 member_in_go_iface[ETH_ALEN];
55 enum p2p_go_state go_state;
58 u8 intended_addr[ETH_ALEN];
61 struct p2p_channels channels;
67 * req_config_methods - Pending provision discovery methods
69 u16 req_config_methods;
72 * wps_prov_info - Stored provisioning WPS config method
74 * This is used to store pending WPS config method between Provisioning
75 * Discovery and connection to a running group.
79 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
80 #define P2P_DEV_REPORTED BIT(1)
81 #define P2P_DEV_NOT_YET_READY BIT(2)
82 #define P2P_DEV_SD_INFO BIT(3)
83 #define P2P_DEV_SD_SCHEDULE BIT(4)
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)
100 int status; /* enum p2p_status_code */
101 unsigned int wait_count;
102 unsigned int connect_reqs;
103 unsigned int invitation_reqs;
105 u16 ext_listen_period;
106 u16 ext_listen_interval;
112 struct p2p_sd_query {
113 struct p2p_sd_query *next;
116 int wsd; /* Wi-Fi Display Service Discovery Request */
120 struct p2p_pending_action_tx {
126 unsigned int wait_time;
127 /* Followed by len octets of the frame */
131 * struct p2p_data - P2P module data (internal to P2P module)
135 * cfg - P2P module configuration
137 * This is included in the same memory allocation with the
138 * struct p2p_data and as such, must not be freed separately.
140 struct p2p_config *cfg;
143 * state - The current P2P state
152 * P2P_SEARCH - Search (Device Discovery)
157 * P2P_CONNECT - Trying to start GO Negotiation
162 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
167 * P2P_GO_NEG - In GO Negotiation
172 * P2P_LISTEN_ONLY - Listen only
177 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
179 P2P_WAIT_PEER_CONNECT,
182 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
187 * P2P_SD_DURING_FIND - Service Discovery during find
192 * P2P_PROVISIONING - Provisioning (during group formation)
197 * P2P_PD_DURING_FIND - Provision Discovery during find
202 * P2P_INVITE - Trying to start Invite
207 * P2P_INVITE_LISTEN - Listen during Invite
213 * min_disc_int - minDiscoverableInterval
218 * max_disc_int - maxDiscoverableInterval
223 * max_disc_tu - Maximum number of TUs for discoverable interval
228 * devices - List of known P2P Device peers
230 struct dl_list devices;
233 * go_neg_peer - Pointer to GO Negotiation peer
235 struct p2p_device *go_neg_peer;
238 * invite_peer - Pointer to Invite peer
240 struct p2p_device *invite_peer;
242 const u8 *invite_go_dev_addr;
243 u8 invite_go_dev_addr_buf[ETH_ALEN];
246 * sd_peer - Pointer to Service Discovery peer
248 struct p2p_device *sd_peer;
251 * sd_query - Pointer to Service Discovery query
253 struct p2p_sd_query *sd_query;
255 /* GO Negotiation data */
258 * intended_addr - Local Intended P2P Interface Address
260 * This address is used during group owner negotiation as the Intended
261 * P2P Interface Address and the group interface will be created with
262 * address as the local address in case of successfully completed
265 u8 intended_addr[ETH_ALEN];
268 * go_intent - Local GO Intent to be used during GO Negotiation
273 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
278 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
283 * ssid_len - ssid length in octets
288 * ssid_set - Whether SSID is already set for GO Negotiation
293 * Regulatory class for own operational channel
298 * op_channel - Own operational channel
303 * channels - Own supported regulatory classes and channels
305 * List of supposerted channels per regulatory class. The regulatory
306 * classes are defined in IEEE Std 802.11-2007 Annex J and the
307 * numbering of the clases depends on the configured country code.
309 struct p2p_channels channels;
311 struct wpa_freq_range_list no_go_freq;
313 enum p2p_pending_action_state {
314 P2P_NO_PENDING_ACTION,
315 P2P_PENDING_GO_NEG_REQUEST,
316 P2P_PENDING_GO_NEG_RESPONSE,
317 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
318 P2P_PENDING_GO_NEG_CONFIRM,
321 P2P_PENDING_INVITATION_REQUEST,
322 P2P_PENDING_INVITATION_RESPONSE,
323 P2P_PENDING_DEV_DISC_REQUEST,
324 P2P_PENDING_DEV_DISC_RESPONSE,
325 P2P_PENDING_GO_DISC_REQ
326 } pending_action_state;
328 unsigned int pending_listen_freq;
329 unsigned int pending_listen_sec;
330 unsigned int pending_listen_usec;
338 * sd_queries - Pending service discovery queries
340 struct p2p_sd_query *sd_queries;
343 * srv_update_indic - Service Update Indicator for local services
345 u16 srv_update_indic;
347 struct wpabuf *sd_resp; /* Fragmented SD response */
348 u8 sd_resp_addr[ETH_ALEN];
349 u8 sd_resp_dialog_token;
350 size_t sd_resp_pos; /* Offset in sd_resp */
353 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
354 u16 sd_rx_update_indic;
356 /* P2P Invitation data */
357 enum p2p_invite_role inv_role;
358 u8 inv_bssid[ETH_ALEN];
363 u8 inv_group_bssid[ETH_ALEN];
364 u8 *inv_group_bssid_ptr;
365 u8 inv_go_dev_addr[ETH_ALEN];
370 enum p2p_discovery_type find_type;
371 unsigned int last_p2p_find_timeout;
372 u8 last_prog_scan_class;
373 u8 last_prog_scan_chan;
374 int p2p_scan_running;
375 enum p2p_after_scan {
376 P2P_AFTER_SCAN_NOTHING,
377 P2P_AFTER_SCAN_LISTEN,
378 P2P_AFTER_SCAN_CONNECT
380 u8 after_scan_peer[ETH_ALEN];
381 struct p2p_pending_action_tx *after_scan_tx;
382 unsigned int after_scan_tx_in_progress:1;
384 /* Requested device types for find/search */
385 unsigned int num_req_dev_types;
388 u8 find_dev_id_buf[ETH_ALEN];
390 struct os_reltime find_start; /* time of last p2p_find start */
392 struct p2p_group **groups;
395 struct p2p_device *pending_client_disc_go;
396 u8 pending_client_disc_addr[ETH_ALEN];
397 u8 pending_dev_disc_dialog_token;
398 u8 pending_dev_disc_addr[ETH_ALEN];
399 int pending_dev_disc_freq;
400 unsigned int pending_client_disc_freq;
403 unsigned int ext_listen_period;
404 unsigned int ext_listen_interval;
405 unsigned int ext_listen_interval_sec;
406 unsigned int ext_listen_interval_usec;
408 u8 peer_filter[ETH_ALEN];
414 int best_freq_overall;
415 int own_freq_preference;
418 * wps_vendor_ext - WPS Vendor Extensions to add
420 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
423 * user_initiated_pd - Whether a PD request is user initiated or not.
425 u8 user_initiated_pd;
428 * Keep track of which peer a given PD request was sent to.
429 * Used to raise a timeout alert in case there is no response.
431 u8 pending_pd_devaddr[ETH_ALEN];
434 * Retry counter for provision discovery requests when issued
440 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
442 * This is is used during PD retries for join-a-group case to use the
443 * correct operating frequency determined from a BSS entry for the GO.
450 /* Extra delay in milliseconds between search iterations */
451 unsigned int search_delay;
454 #ifdef CONFIG_WIFI_DISPLAY
455 struct wpabuf *wfd_ie_beacon;
456 struct wpabuf *wfd_ie_probe_req;
457 struct wpabuf *wfd_ie_probe_resp;
458 struct wpabuf *wfd_ie_assoc_req;
459 struct wpabuf *wfd_ie_invitation;
460 struct wpabuf *wfd_ie_prov_disc_req;
461 struct wpabuf *wfd_ie_prov_disc_resp;
462 struct wpabuf *wfd_ie_go_neg;
463 struct wpabuf *wfd_dev_info;
464 struct wpabuf *wfd_assoc_bssid;
465 struct wpabuf *wfd_coupled_sink_info;
466 #endif /* CONFIG_WIFI_DISPLAY */
470 * struct p2p_message - Parsed P2P message (or P2P IE)
473 struct wpabuf *p2p_attributes;
474 struct wpabuf *wps_attributes;
475 struct wpabuf *wfd_subelems;
479 const u8 *capability;
482 const u8 *listen_channel;
483 const u8 *operating_channel;
484 const u8 *channel_list;
486 const u8 *config_timeout;
487 const u8 *intended_addr;
488 const u8 *group_bssid;
489 const u8 *invitation_flags;
491 const u8 *group_info;
492 size_t group_info_len;
499 const u8 *manageability;
504 const u8 *ext_listen_timing;
506 const u8 *minor_reason_code;
508 const u8 *oob_go_neg_channel;
510 /* P2P Device Info */
511 const u8 *p2p_device_info;
512 size_t p2p_device_info_len;
513 const u8 *p2p_device_addr;
514 const u8 *pri_dev_type;
515 u8 num_sec_dev_types;
516 char device_name[33];
521 u16 wps_config_methods;
522 const u8 *wps_pri_dev_type;
523 const u8 *wps_sec_dev_type_list;
524 size_t wps_sec_dev_type_list_len;
525 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
526 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
527 const u8 *manufacturer;
528 size_t manufacturer_len;
529 const u8 *model_name;
530 size_t model_name_len;
531 const u8 *model_number;
532 size_t model_number_len;
533 const u8 *serial_number;
534 size_t serial_number_len;
536 /* DS Parameter Set IE */
544 #define P2P_MAX_GROUP_ENTRIES 50
546 struct p2p_group_info {
547 unsigned int num_clients;
548 struct p2p_client_info {
549 const u8 *p2p_device_addr;
550 const u8 *p2p_interface_addr;
553 const u8 *pri_dev_type;
554 u8 num_sec_dev_types;
555 const u8 *sec_dev_types;
556 const char *dev_name;
558 } client[P2P_MAX_GROUP_ENTRIES];
563 int p2p_random(char *buf, size_t len);
564 int p2p_channel_to_freq(int op_class, int channel);
565 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
566 void p2p_channels_intersect(const struct p2p_channels *a,
567 const struct p2p_channels *b,
568 struct p2p_channels *res);
569 void p2p_channels_union(const struct p2p_channels *a,
570 const struct p2p_channels *b,
571 struct p2p_channels *res);
572 void p2p_channels_remove_freqs(struct p2p_channels *chan,
573 const struct wpa_freq_range_list *list);
574 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
576 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
577 const struct p2p_channels *chan);
578 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
579 u8 *op_class, u8 *op_channel);
582 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
583 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
584 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
585 void p2p_parse_free(struct p2p_message *msg);
586 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
587 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
588 struct p2p_group_info *info);
592 struct p2p_noa_desc {
600 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
601 u8 p2p_group_presence_req(struct p2p_group *group,
602 const u8 *client_interface_addr,
603 const u8 *noa, size_t noa_len);
604 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
605 size_t group_id_len);
606 void p2p_group_update_ies(struct p2p_group *group);
607 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
608 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
609 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
611 int p2p_group_get_freq(struct p2p_group *group);
614 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
615 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
617 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
618 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
619 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
620 struct p2p_device *peer);
621 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
622 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
623 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
624 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
625 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
626 u8 reg_class, u8 channel);
627 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
628 u8 reg_class, u8 channel);
629 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
630 struct p2p_channels *chan);
631 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
633 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
634 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
635 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
636 const u8 *ssid, size_t ssid_len);
637 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
638 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
639 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
640 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
642 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
643 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
644 u8 oper_class, u8 channel,
645 enum p2p_role_indication role);
646 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
650 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
651 struct p2p_device *dev);
652 void p2p_free_sd_queries(struct p2p_data *p2p);
653 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
654 const u8 *data, size_t len, int rx_freq);
655 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
656 const u8 *data, size_t len, int rx_freq);
657 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
658 const u8 *data, size_t len, int rx_freq);
659 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
660 const u8 *data, size_t len, int rx_freq);
661 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
664 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
665 struct p2p_device *dev,
666 const u8 *channel_list, size_t channel_list_len);
667 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
668 const u8 *data, size_t len, int rx_freq);
669 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
670 const u8 *data, size_t len, int rx_freq);
671 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
672 const u8 *data, size_t len);
673 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
674 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
675 void p2p_reselect_channel(struct p2p_data *p2p,
676 struct p2p_channels *intersection);
679 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
680 const u8 *data, size_t len, int rx_freq);
681 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
682 const u8 *data, size_t len);
683 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
684 int join, int force_freq);
685 void p2p_reset_pending_pd(struct p2p_data *p2p);
687 /* p2p_invitation.c */
688 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
689 const u8 *data, size_t len, int rx_freq);
690 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
691 const u8 *data, size_t len);
692 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
693 const u8 *go_dev_addr);
694 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
695 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
698 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
699 const u8 *data, size_t len, int rx_freq);
700 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
701 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
702 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
703 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
704 const u8 *data, size_t len);
705 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
706 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
707 const u8 *data, size_t len, int rx_freq);
710 void p2p_set_state(struct p2p_data *p2p, int new_state);
711 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
713 void p2p_clear_timeout(struct p2p_data *p2p);
714 void p2p_continue_find(struct p2p_data *p2p);
715 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
717 struct p2p_message *msg);
718 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
719 struct p2p_device *dev, struct p2p_message *msg);
720 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
721 struct os_reltime *rx_time, int level, const u8 *ies,
722 size_t ies_len, int scan_res);
723 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
724 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
726 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
728 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
729 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
730 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
731 size_t num_req_dev_type);
732 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
733 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
734 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
735 const u8 *src, const u8 *bssid, const u8 *buf,
736 size_t len, unsigned int wait_time);
737 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
738 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
739 unsigned int force_freq, unsigned int pref_freq,
741 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
743 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
745 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)