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_SD_INFO BIT(3)
85 #define P2P_DEV_SD_SCHEDULE BIT(4)
86 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
87 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
88 #define P2P_DEV_USER_REJECTED BIT(7)
89 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
90 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
91 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
92 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
93 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
94 #define P2P_DEV_FORCE_FREQ BIT(13)
95 #define P2P_DEV_PD_FOR_JOIN BIT(14)
96 #define P2P_DEV_REPORTED_ONCE BIT(15)
97 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
98 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
99 #define P2P_DEV_NO_PREF_CHAN BIT(18)
102 int status; /* enum p2p_status_code */
103 unsigned int wait_count;
104 unsigned int connect_reqs;
105 unsigned int invitation_reqs;
107 u16 ext_listen_period;
108 u16 ext_listen_interval;
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;
258 /* GO Negotiation data */
261 * intended_addr - Local Intended P2P Interface Address
263 * This address is used during group owner negotiation as the Intended
264 * P2P Interface Address and the group interface will be created with
265 * address as the local address in case of successfully completed
268 u8 intended_addr[ETH_ALEN];
271 * go_intent - Local GO Intent to be used during GO Negotiation
276 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
281 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
286 * ssid_len - ssid length in octets
291 * ssid_set - Whether SSID is already set for GO Negotiation
296 * Regulatory class for own operational channel
301 * op_channel - Own operational channel
306 * channels - Own supported regulatory classes and channels
308 * List of supposerted channels per regulatory class. The regulatory
309 * classes are defined in IEEE Std 802.11-2007 Annex J and the
310 * numbering of the clases depends on the configured country code.
312 struct p2p_channels channels;
314 struct wpa_freq_range_list no_go_freq;
316 enum p2p_pending_action_state {
317 P2P_NO_PENDING_ACTION,
318 P2P_PENDING_GO_NEG_REQUEST,
319 P2P_PENDING_GO_NEG_RESPONSE,
320 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
321 P2P_PENDING_GO_NEG_CONFIRM,
324 P2P_PENDING_INVITATION_REQUEST,
325 P2P_PENDING_INVITATION_RESPONSE,
326 P2P_PENDING_DEV_DISC_REQUEST,
327 P2P_PENDING_DEV_DISC_RESPONSE,
328 P2P_PENDING_GO_DISC_REQ
329 } pending_action_state;
331 unsigned int pending_listen_freq;
332 unsigned int pending_listen_sec;
333 unsigned int pending_listen_usec;
341 * sd_queries - Pending service discovery queries
343 struct p2p_sd_query *sd_queries;
346 * srv_update_indic - Service Update Indicator for local services
348 u16 srv_update_indic;
350 struct wpabuf *sd_resp; /* Fragmented SD response */
351 u8 sd_resp_addr[ETH_ALEN];
352 u8 sd_resp_dialog_token;
353 size_t sd_resp_pos; /* Offset in sd_resp */
356 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
357 u16 sd_rx_update_indic;
359 /* P2P Invitation data */
360 enum p2p_invite_role inv_role;
361 u8 inv_bssid[ETH_ALEN];
366 u8 inv_group_bssid[ETH_ALEN];
367 u8 *inv_group_bssid_ptr;
368 u8 inv_go_dev_addr[ETH_ALEN];
373 enum p2p_discovery_type find_type;
374 unsigned int last_p2p_find_timeout;
375 u8 last_prog_scan_class;
376 u8 last_prog_scan_chan;
377 int p2p_scan_running;
378 enum p2p_after_scan {
379 P2P_AFTER_SCAN_NOTHING,
380 P2P_AFTER_SCAN_LISTEN,
381 P2P_AFTER_SCAN_CONNECT
383 u8 after_scan_peer[ETH_ALEN];
384 struct p2p_pending_action_tx *after_scan_tx;
385 unsigned int after_scan_tx_in_progress:1;
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_reltime 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;
418 int own_freq_preference;
421 * wps_vendor_ext - WPS Vendor Extensions to add
423 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
426 * user_initiated_pd - Whether a PD request is user initiated or not.
428 u8 user_initiated_pd;
431 * Keep track of which peer a given PD request was sent to.
432 * Used to raise a timeout alert in case there is no response.
434 u8 pending_pd_devaddr[ETH_ALEN];
437 * Retry counter for provision discovery requests when issued
443 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
445 * This is is used during PD retries for join-a-group case to use the
446 * correct operating frequency determined from a BSS entry for the GO.
453 /* Extra delay in milliseconds between search iterations */
454 unsigned int search_delay;
457 #ifdef CONFIG_WIFI_DISPLAY
458 struct wpabuf *wfd_ie_beacon;
459 struct wpabuf *wfd_ie_probe_req;
460 struct wpabuf *wfd_ie_probe_resp;
461 struct wpabuf *wfd_ie_assoc_req;
462 struct wpabuf *wfd_ie_invitation;
463 struct wpabuf *wfd_ie_prov_disc_req;
464 struct wpabuf *wfd_ie_prov_disc_resp;
465 struct wpabuf *wfd_ie_go_neg;
466 struct wpabuf *wfd_dev_info;
467 struct wpabuf *wfd_assoc_bssid;
468 struct wpabuf *wfd_coupled_sink_info;
469 #endif /* CONFIG_WIFI_DISPLAY */
471 u16 authorized_oob_dev_pw_id;
475 * struct p2p_message - Parsed P2P message (or P2P IE)
478 struct wpabuf *p2p_attributes;
479 struct wpabuf *wps_attributes;
480 struct wpabuf *wfd_subelems;
484 const u8 *capability;
487 const u8 *listen_channel;
488 const u8 *operating_channel;
489 const u8 *channel_list;
491 const u8 *config_timeout;
492 const u8 *intended_addr;
493 const u8 *group_bssid;
494 const u8 *invitation_flags;
496 const u8 *group_info;
497 size_t group_info_len;
504 const u8 *manageability;
509 const u8 *ext_listen_timing;
511 const u8 *minor_reason_code;
513 const u8 *oob_go_neg_channel;
515 /* P2P Device Info */
516 const u8 *p2p_device_info;
517 size_t p2p_device_info_len;
518 const u8 *p2p_device_addr;
519 const u8 *pri_dev_type;
520 u8 num_sec_dev_types;
521 char device_name[33];
526 int dev_password_id_present;
527 u16 wps_config_methods;
528 const u8 *wps_pri_dev_type;
529 const u8 *wps_sec_dev_type_list;
530 size_t wps_sec_dev_type_list_len;
531 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
532 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
533 const u8 *manufacturer;
534 size_t manufacturer_len;
535 const u8 *model_name;
536 size_t model_name_len;
537 const u8 *model_number;
538 size_t model_number_len;
539 const u8 *serial_number;
540 size_t serial_number_len;
541 const u8 *oob_dev_password;
542 size_t oob_dev_password_len;
544 /* DS Parameter Set IE */
552 #define P2P_MAX_GROUP_ENTRIES 50
554 struct p2p_group_info {
555 unsigned int num_clients;
556 struct p2p_client_info {
557 const u8 *p2p_device_addr;
558 const u8 *p2p_interface_addr;
561 const u8 *pri_dev_type;
562 u8 num_sec_dev_types;
563 const u8 *sec_dev_types;
564 const char *dev_name;
566 } client[P2P_MAX_GROUP_ENTRIES];
571 int p2p_random(char *buf, size_t len);
572 int p2p_channel_to_freq(int op_class, int channel);
573 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
574 void p2p_channels_intersect(const struct p2p_channels *a,
575 const struct p2p_channels *b,
576 struct p2p_channels *res);
577 void p2p_channels_union(const struct p2p_channels *a,
578 const struct p2p_channels *b,
579 struct p2p_channels *res);
580 void p2p_channels_remove_freqs(struct p2p_channels *chan,
581 const struct wpa_freq_range_list *list);
582 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
584 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
585 const struct p2p_channels *chan);
586 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
587 u8 *op_class, u8 *op_channel);
590 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
591 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
592 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
593 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
594 size_t p2p_len, struct p2p_message *msg);
595 void p2p_parse_free(struct p2p_message *msg);
596 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
597 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
598 struct p2p_group_info *info);
602 struct p2p_noa_desc {
610 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
611 u8 p2p_group_presence_req(struct p2p_group *group,
612 const u8 *client_interface_addr,
613 const u8 *noa, size_t noa_len);
614 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
615 size_t group_id_len);
616 void p2p_group_update_ies(struct p2p_group *group);
617 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
618 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
619 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
621 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
622 int p2p_group_get_freq(struct p2p_group *group);
625 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
626 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
628 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
629 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
630 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
631 struct p2p_device *peer);
632 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
633 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
634 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
635 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
636 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
637 u8 reg_class, u8 channel);
638 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
639 u8 reg_class, u8 channel);
640 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
641 struct p2p_channels *chan);
642 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
644 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
645 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
646 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
647 const u8 *ssid, size_t ssid_len);
648 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
649 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
650 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
651 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
653 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
654 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
655 u8 oper_class, u8 channel,
656 enum p2p_role_indication role);
657 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
661 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
662 struct p2p_device *dev);
663 void p2p_free_sd_queries(struct p2p_data *p2p);
664 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
665 const u8 *data, size_t len, int rx_freq);
666 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
667 const u8 *data, size_t len, int rx_freq);
668 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
669 const u8 *data, size_t len, int rx_freq);
670 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
671 const u8 *data, size_t len, int rx_freq);
672 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
675 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
676 struct p2p_device *dev,
677 const u8 *channel_list, size_t channel_list_len);
678 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
679 const u8 *data, size_t len, int rx_freq);
680 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
681 const u8 *data, size_t len, int rx_freq);
682 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
683 const u8 *data, size_t len);
684 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
685 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
686 void p2p_reselect_channel(struct p2p_data *p2p,
687 struct p2p_channels *intersection);
690 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
691 const u8 *data, size_t len, int rx_freq);
692 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
693 const u8 *data, size_t len);
694 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
695 int join, int force_freq);
696 void p2p_reset_pending_pd(struct p2p_data *p2p);
698 /* p2p_invitation.c */
699 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
700 const u8 *data, size_t len, int rx_freq);
701 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
702 const u8 *data, size_t len);
703 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
704 const u8 *go_dev_addr, int dev_pw_id);
705 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
706 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
709 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
710 const u8 *data, size_t len, int rx_freq);
711 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
712 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
713 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
714 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
715 const u8 *data, size_t len);
716 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
717 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
718 const u8 *data, size_t len, int rx_freq);
721 void p2p_set_state(struct p2p_data *p2p, int new_state);
722 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
724 void p2p_clear_timeout(struct p2p_data *p2p);
725 void p2p_continue_find(struct p2p_data *p2p);
726 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
728 struct p2p_message *msg);
729 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
730 struct p2p_device *dev, struct p2p_message *msg);
731 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
732 struct os_reltime *rx_time, int level, const u8 *ies,
733 size_t ies_len, int scan_res);
734 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
735 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
737 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
739 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
740 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
741 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
742 size_t num_req_dev_type);
743 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
744 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
745 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
746 const u8 *src, const u8 *bssid, const u8 *buf,
747 size_t len, unsigned int wait_time);
748 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
749 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
750 unsigned int force_freq, unsigned int pref_freq,
752 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
754 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
756 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)