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;
33 struct p2p_peer_info info;
36 * If the peer was discovered based on an interface address (e.g., GO
37 * from Beacon/Probe Response), the interface address is stored here.
38 * p2p_device_addr must still be set in such a case to the unique
39 * identifier for the P2P Device.
41 u8 interface_addr[ETH_ALEN];
44 * P2P Device Address of the GO in whose group this P2P Device is a
47 u8 member_in_go_dev[ETH_ALEN];
50 * P2P Interface Address of the GO in whose group this P2P Device is a
53 u8 member_in_go_iface[ETH_ALEN];
56 enum p2p_go_state go_state;
59 u8 intended_addr[ETH_ALEN];
62 struct p2p_channels channels;
68 * req_config_methods - Pending provision discovery methods
70 u16 req_config_methods;
73 * wps_prov_info - Stored provisioning WPS config method
75 * This is used to store pending WPS config method between Provisioning
76 * Discovery and connection to a running group.
80 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
81 #define P2P_DEV_REPORTED BIT(1)
82 #define P2P_DEV_NOT_YET_READY BIT(2)
83 #define P2P_DEV_SD_INFO BIT(3)
84 #define P2P_DEV_SD_SCHEDULE BIT(4)
85 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
86 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
87 #define P2P_DEV_USER_REJECTED BIT(7)
88 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
89 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
90 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
91 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
92 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
93 #define P2P_DEV_FORCE_FREQ BIT(13)
94 #define P2P_DEV_PD_FOR_JOIN BIT(14)
95 #define P2P_DEV_REPORTED_ONCE BIT(15)
96 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
97 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
98 #define P2P_DEV_NO_PREF_CHAN BIT(18)
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;
113 struct p2p_sd_query {
114 struct p2p_sd_query *next;
117 int wsd; /* Wi-Fi Display Service Discovery Request */
121 struct p2p_pending_action_tx {
127 unsigned int wait_time;
128 /* Followed by len octets of the frame */
132 * struct p2p_data - P2P module data (internal to P2P module)
136 * cfg - P2P module configuration
138 * This is included in the same memory allocation with the
139 * struct p2p_data and as such, must not be freed separately.
141 struct p2p_config *cfg;
144 * state - The current P2P state
153 * P2P_SEARCH - Search (Device Discovery)
158 * P2P_CONNECT - Trying to start GO Negotiation
163 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
168 * P2P_GO_NEG - In GO Negotiation
173 * P2P_LISTEN_ONLY - Listen only
178 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
180 P2P_WAIT_PEER_CONNECT,
183 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
188 * P2P_SD_DURING_FIND - Service Discovery during find
193 * P2P_PROVISIONING - Provisioning (during group formation)
198 * P2P_PD_DURING_FIND - Provision Discovery during find
203 * P2P_INVITE - Trying to start Invite
208 * P2P_INVITE_LISTEN - Listen during Invite
214 * min_disc_int - minDiscoverableInterval
219 * max_disc_int - maxDiscoverableInterval
224 * max_disc_tu - Maximum number of TUs for discoverable interval
229 * devices - List of known P2P Device peers
231 struct dl_list devices;
234 * go_neg_peer - Pointer to GO Negotiation peer
236 struct p2p_device *go_neg_peer;
239 * invite_peer - Pointer to Invite peer
241 struct p2p_device *invite_peer;
243 const u8 *invite_go_dev_addr;
244 u8 invite_go_dev_addr_buf[ETH_ALEN];
247 * sd_peer - Pointer to Service Discovery peer
249 struct p2p_device *sd_peer;
252 * sd_query - Pointer to Service Discovery query
254 struct p2p_sd_query *sd_query;
256 /* GO Negotiation data */
259 * intended_addr - Local Intended P2P Interface Address
261 * This address is used during group owner negotiation as the Intended
262 * P2P Interface Address and the group interface will be created with
263 * address as the local address in case of successfully completed
266 u8 intended_addr[ETH_ALEN];
269 * go_intent - Local GO Intent to be used during GO Negotiation
274 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
279 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
284 * ssid_len - ssid length in octets
289 * ssid_set - Whether SSID is already set for GO Negotiation
294 * Regulatory class for own operational channel
299 * op_channel - Own operational channel
304 * channels - Own supported regulatory classes and channels
306 * List of supposerted channels per regulatory class. The regulatory
307 * classes are defined in IEEE Std 802.11-2007 Annex J and the
308 * numbering of the clases depends on the configured country code.
310 struct p2p_channels channels;
312 struct wpa_freq_range_list no_go_freq;
314 enum p2p_pending_action_state {
315 P2P_NO_PENDING_ACTION,
316 P2P_PENDING_GO_NEG_REQUEST,
317 P2P_PENDING_GO_NEG_RESPONSE,
318 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
319 P2P_PENDING_GO_NEG_CONFIRM,
322 P2P_PENDING_INVITATION_REQUEST,
323 P2P_PENDING_INVITATION_RESPONSE,
324 P2P_PENDING_DEV_DISC_REQUEST,
325 P2P_PENDING_DEV_DISC_RESPONSE,
326 P2P_PENDING_GO_DISC_REQ
327 } pending_action_state;
329 unsigned int pending_listen_freq;
330 unsigned int pending_listen_sec;
331 unsigned int pending_listen_usec;
339 * sd_queries - Pending service discovery queries
341 struct p2p_sd_query *sd_queries;
344 * srv_update_indic - Service Update Indicator for local services
346 u16 srv_update_indic;
348 struct wpabuf *sd_resp; /* Fragmented SD response */
349 u8 sd_resp_addr[ETH_ALEN];
350 u8 sd_resp_dialog_token;
351 size_t sd_resp_pos; /* Offset in sd_resp */
354 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
355 u16 sd_rx_update_indic;
357 /* P2P Invitation data */
358 enum p2p_invite_role inv_role;
359 u8 inv_bssid[ETH_ALEN];
364 u8 inv_group_bssid[ETH_ALEN];
365 u8 *inv_group_bssid_ptr;
366 u8 inv_go_dev_addr[ETH_ALEN];
371 enum p2p_discovery_type find_type;
372 unsigned int last_p2p_find_timeout;
373 u8 last_prog_scan_class;
374 u8 last_prog_scan_chan;
375 int p2p_scan_running;
376 enum p2p_after_scan {
377 P2P_AFTER_SCAN_NOTHING,
378 P2P_AFTER_SCAN_LISTEN,
379 P2P_AFTER_SCAN_CONNECT
381 u8 after_scan_peer[ETH_ALEN];
382 struct p2p_pending_action_tx *after_scan_tx;
383 unsigned int after_scan_tx_in_progress:1;
385 /* Requested device types for find/search */
386 unsigned int num_req_dev_types;
389 u8 find_dev_id_buf[ETH_ALEN];
391 struct os_reltime find_start; /* time of last p2p_find start */
393 struct p2p_group **groups;
396 struct p2p_device *pending_client_disc_go;
397 u8 pending_client_disc_addr[ETH_ALEN];
398 u8 pending_dev_disc_dialog_token;
399 u8 pending_dev_disc_addr[ETH_ALEN];
400 int pending_dev_disc_freq;
401 unsigned int pending_client_disc_freq;
404 unsigned int ext_listen_period;
405 unsigned int ext_listen_interval;
406 unsigned int ext_listen_interval_sec;
407 unsigned int ext_listen_interval_usec;
409 u8 peer_filter[ETH_ALEN];
415 int best_freq_overall;
416 int own_freq_preference;
419 * wps_vendor_ext - WPS Vendor Extensions to add
421 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
424 * user_initiated_pd - Whether a PD request is user initiated or not.
426 u8 user_initiated_pd;
429 * Keep track of which peer a given PD request was sent to.
430 * Used to raise a timeout alert in case there is no response.
432 u8 pending_pd_devaddr[ETH_ALEN];
435 * Retry counter for provision discovery requests when issued
441 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
443 * This is is used during PD retries for join-a-group case to use the
444 * correct operating frequency determined from a BSS entry for the GO.
451 /* Extra delay in milliseconds between search iterations */
452 unsigned int search_delay;
455 #ifdef CONFIG_WIFI_DISPLAY
456 struct wpabuf *wfd_ie_beacon;
457 struct wpabuf *wfd_ie_probe_req;
458 struct wpabuf *wfd_ie_probe_resp;
459 struct wpabuf *wfd_ie_assoc_req;
460 struct wpabuf *wfd_ie_invitation;
461 struct wpabuf *wfd_ie_prov_disc_req;
462 struct wpabuf *wfd_ie_prov_disc_resp;
463 struct wpabuf *wfd_ie_go_neg;
464 struct wpabuf *wfd_dev_info;
465 struct wpabuf *wfd_assoc_bssid;
466 struct wpabuf *wfd_coupled_sink_info;
467 #endif /* CONFIG_WIFI_DISPLAY */
471 * struct p2p_message - Parsed P2P message (or P2P IE)
474 struct wpabuf *p2p_attributes;
475 struct wpabuf *wps_attributes;
476 struct wpabuf *wfd_subelems;
480 const u8 *capability;
483 const u8 *listen_channel;
484 const u8 *operating_channel;
485 const u8 *channel_list;
487 const u8 *config_timeout;
488 const u8 *intended_addr;
489 const u8 *group_bssid;
490 const u8 *invitation_flags;
492 const u8 *group_info;
493 size_t group_info_len;
500 const u8 *manageability;
505 const u8 *ext_listen_timing;
507 const u8 *minor_reason_code;
509 const u8 *oob_go_neg_channel;
511 /* P2P Device Info */
512 const u8 *p2p_device_info;
513 size_t p2p_device_info_len;
514 const u8 *p2p_device_addr;
515 const u8 *pri_dev_type;
516 u8 num_sec_dev_types;
517 char device_name[33];
522 u16 wps_config_methods;
523 const u8 *wps_pri_dev_type;
524 const u8 *wps_sec_dev_type_list;
525 size_t wps_sec_dev_type_list_len;
526 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
527 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
528 const u8 *manufacturer;
529 size_t manufacturer_len;
530 const u8 *model_name;
531 size_t model_name_len;
532 const u8 *model_number;
533 size_t model_number_len;
534 const u8 *serial_number;
535 size_t serial_number_len;
537 /* DS Parameter Set IE */
545 #define P2P_MAX_GROUP_ENTRIES 50
547 struct p2p_group_info {
548 unsigned int num_clients;
549 struct p2p_client_info {
550 const u8 *p2p_device_addr;
551 const u8 *p2p_interface_addr;
554 const u8 *pri_dev_type;
555 u8 num_sec_dev_types;
556 const u8 *sec_dev_types;
557 const char *dev_name;
559 } client[P2P_MAX_GROUP_ENTRIES];
564 int p2p_random(char *buf, size_t len);
565 int p2p_channel_to_freq(int op_class, int channel);
566 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
567 void p2p_channels_intersect(const struct p2p_channels *a,
568 const struct p2p_channels *b,
569 struct p2p_channels *res);
570 void p2p_channels_union(const struct p2p_channels *a,
571 const struct p2p_channels *b,
572 struct p2p_channels *res);
573 void p2p_channels_remove_freqs(struct p2p_channels *chan,
574 const struct wpa_freq_range_list *list);
575 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
577 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
578 const struct p2p_channels *chan);
579 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
580 u8 *op_class, u8 *op_channel);
583 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
584 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
585 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
586 void p2p_parse_free(struct p2p_message *msg);
587 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
588 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
589 struct p2p_group_info *info);
593 struct p2p_noa_desc {
601 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
602 u8 p2p_group_presence_req(struct p2p_group *group,
603 const u8 *client_interface_addr,
604 const u8 *noa, size_t noa_len);
605 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
606 size_t group_id_len);
607 void p2p_group_update_ies(struct p2p_group *group);
608 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
609 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
610 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
612 int p2p_group_get_freq(struct p2p_group *group);
615 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
616 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
618 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
619 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
620 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
621 struct p2p_device *peer);
622 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
623 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
624 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
625 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
626 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
627 u8 reg_class, u8 channel);
628 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
629 u8 reg_class, u8 channel);
630 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
631 struct p2p_channels *chan);
632 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
634 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
635 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
636 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
637 const u8 *ssid, size_t ssid_len);
638 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
639 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
640 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
641 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
643 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
644 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
645 u8 oper_class, u8 channel,
646 enum p2p_role_indication role);
647 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
651 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
652 struct p2p_device *dev);
653 void p2p_free_sd_queries(struct p2p_data *p2p);
654 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
655 const u8 *data, size_t len, int rx_freq);
656 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
657 const u8 *data, size_t len, int rx_freq);
658 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
659 const u8 *data, size_t len, int rx_freq);
660 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
661 const u8 *data, size_t len, int rx_freq);
662 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
665 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
666 struct p2p_device *dev,
667 const u8 *channel_list, size_t channel_list_len);
668 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
669 const u8 *data, size_t len, int rx_freq);
670 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
671 const u8 *data, size_t len, int rx_freq);
672 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
673 const u8 *data, size_t len);
674 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
675 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
676 void p2p_reselect_channel(struct p2p_data *p2p,
677 struct p2p_channels *intersection);
680 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
681 const u8 *data, size_t len, int rx_freq);
682 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
683 const u8 *data, size_t len);
684 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
685 int join, int force_freq);
686 void p2p_reset_pending_pd(struct p2p_data *p2p);
688 /* p2p_invitation.c */
689 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
690 const u8 *data, size_t len, int rx_freq);
691 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
692 const u8 *data, size_t len);
693 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
694 const u8 *go_dev_addr);
695 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
696 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
699 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
700 const u8 *data, size_t len, int rx_freq);
701 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
702 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
703 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
704 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
705 const u8 *data, size_t len);
706 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
707 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
708 const u8 *data, size_t len, int rx_freq);
711 void p2p_set_state(struct p2p_data *p2p, int new_state);
712 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
714 void p2p_clear_timeout(struct p2p_data *p2p);
715 void p2p_continue_find(struct p2p_data *p2p);
716 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
718 struct p2p_message *msg);
719 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
720 struct p2p_device *dev, struct p2p_message *msg);
721 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
722 struct os_reltime *rx_time, int level, const u8 *ies,
723 size_t ies_len, int scan_res);
724 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
725 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
727 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
729 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
730 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
731 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
732 size_t num_req_dev_type);
733 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
734 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
735 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
736 const u8 *src, const u8 *bssid, const u8 *buf,
737 size_t len, unsigned int wait_time);
738 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
739 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
740 unsigned int force_freq, unsigned int pref_freq,
742 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
744 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
746 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)