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 #define P2P_GO_NEG_CNF_MAX_RETRY_COUNT 1
17 enum p2p_role_indication;
26 * struct p2p_device - P2P Device data (internal to P2P module)
30 struct os_reltime last_seen;
33 enum p2p_wps_method wps_method;
36 struct p2p_peer_info info;
39 * If the peer was discovered based on an interface address (e.g., GO
40 * from Beacon/Probe Response), the interface address is stored here.
41 * p2p_device_addr must still be set in such a case to the unique
42 * identifier for the P2P Device.
44 u8 interface_addr[ETH_ALEN];
47 * P2P Device Address of the GO in whose group this P2P Device is a
50 u8 member_in_go_dev[ETH_ALEN];
53 * P2P Interface Address of the GO in whose group this P2P Device is a
56 u8 member_in_go_iface[ETH_ALEN];
59 enum p2p_go_state go_state;
62 u8 intended_addr[ETH_ALEN];
65 struct p2p_channels channels;
71 * req_config_methods - Pending provision discovery methods
73 u16 req_config_methods;
76 * wps_prov_info - Stored provisioning WPS config method
78 * This is used to store pending WPS config method between Provisioning
79 * Discovery and connection to a running group.
83 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
84 #define P2P_DEV_REPORTED BIT(1)
85 #define P2P_DEV_NOT_YET_READY BIT(2)
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)
100 #define P2P_DEV_WAIT_INV_REQ_ACK BIT(19)
103 int status; /* enum p2p_status_code */
104 struct os_reltime go_neg_wait_started;
105 unsigned int wait_count;
106 unsigned int connect_reqs;
107 unsigned int invitation_reqs;
109 u16 ext_listen_period;
110 u16 ext_listen_interval;
116 * go_neg_conf_sent - Number of GO Negotiation Confirmation retries
121 * freq - Frquency on which the GO Negotiation Confirmation is sent
123 int go_neg_conf_freq;
126 * go_neg_conf - GO Negotiation Confirmation frame
128 struct wpabuf *go_neg_conf;
130 int sd_pending_bcast_queries;
133 struct p2p_sd_query {
134 struct p2p_sd_query *next;
137 int wsd; /* Wi-Fi Display Service Discovery Request */
141 struct p2p_pending_action_tx {
147 unsigned int wait_time;
148 /* Followed by len octets of the frame */
152 * struct p2p_data - P2P module data (internal to P2P module)
156 * cfg - P2P module configuration
158 * This is included in the same memory allocation with the
159 * struct p2p_data and as such, must not be freed separately.
161 struct p2p_config *cfg;
164 * state - The current P2P state
173 * P2P_SEARCH - Search (Device Discovery)
178 * P2P_CONNECT - Trying to start GO Negotiation
183 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
188 * P2P_GO_NEG - In GO Negotiation
193 * P2P_LISTEN_ONLY - Listen only
198 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
200 P2P_WAIT_PEER_CONNECT,
203 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
208 * P2P_SD_DURING_FIND - Service Discovery during find
213 * P2P_PROVISIONING - Provisioning (during group formation)
218 * P2P_PD_DURING_FIND - Provision Discovery during find
223 * P2P_INVITE - Trying to start Invite
228 * P2P_INVITE_LISTEN - Listen during Invite
234 * min_disc_int - minDiscoverableInterval
239 * max_disc_int - maxDiscoverableInterval
244 * max_disc_tu - Maximum number of TUs for discoverable interval
249 * devices - List of known P2P Device peers
251 struct dl_list devices;
254 * go_neg_peer - Pointer to GO Negotiation peer
256 struct p2p_device *go_neg_peer;
259 * invite_peer - Pointer to Invite peer
261 struct p2p_device *invite_peer;
263 const u8 *invite_go_dev_addr;
264 u8 invite_go_dev_addr_buf[ETH_ALEN];
265 int invite_dev_pw_id;
268 * sd_peer - Pointer to Service Discovery peer
270 struct p2p_device *sd_peer;
273 * sd_query - Pointer to Service Discovery query
275 struct p2p_sd_query *sd_query;
278 * num_p2p_sd_queries - Total number of broadcast SD queries present in
281 int num_p2p_sd_queries;
283 /* GO Negotiation data */
286 * intended_addr - Local Intended P2P Interface Address
288 * This address is used during group owner negotiation as the Intended
289 * P2P Interface Address and the group interface will be created with
290 * address as the local address in case of successfully completed
293 u8 intended_addr[ETH_ALEN];
296 * go_intent - Local GO Intent to be used during GO Negotiation
301 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
306 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
311 * ssid_len - ssid length in octets
316 * ssid_set - Whether SSID is already set for GO Negotiation
321 * Regulatory class for own operational channel
326 * op_channel - Own operational channel
331 * channels - Own supported regulatory classes and channels
333 * List of supposerted channels per regulatory class. The regulatory
334 * classes are defined in IEEE Std 802.11-2007 Annex J and the
335 * numbering of the clases depends on the configured country code.
337 struct p2p_channels channels;
339 struct wpa_freq_range_list no_go_freq;
341 enum p2p_pending_action_state {
342 P2P_NO_PENDING_ACTION,
343 P2P_PENDING_GO_NEG_REQUEST,
344 P2P_PENDING_GO_NEG_RESPONSE,
345 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
346 P2P_PENDING_GO_NEG_CONFIRM,
349 P2P_PENDING_INVITATION_REQUEST,
350 P2P_PENDING_INVITATION_RESPONSE,
351 P2P_PENDING_DEV_DISC_REQUEST,
352 P2P_PENDING_DEV_DISC_RESPONSE,
353 P2P_PENDING_GO_DISC_REQ
354 } pending_action_state;
356 unsigned int pending_listen_freq;
357 unsigned int pending_listen_sec;
358 unsigned int pending_listen_usec;
366 * sd_queries - Pending service discovery queries
368 struct p2p_sd_query *sd_queries;
371 * srv_update_indic - Service Update Indicator for local services
373 u16 srv_update_indic;
375 struct wpabuf *sd_resp; /* Fragmented SD response */
376 u8 sd_resp_addr[ETH_ALEN];
377 u8 sd_resp_dialog_token;
378 size_t sd_resp_pos; /* Offset in sd_resp */
381 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
382 u16 sd_rx_update_indic;
384 /* P2P Invitation data */
385 enum p2p_invite_role inv_role;
386 u8 inv_bssid[ETH_ALEN];
391 u8 inv_group_bssid[ETH_ALEN];
392 u8 *inv_group_bssid_ptr;
393 u8 inv_go_dev_addr[ETH_ALEN];
398 enum p2p_discovery_type find_type;
399 unsigned int last_p2p_find_timeout;
400 u8 last_prog_scan_class;
401 u8 last_prog_scan_chan;
402 int p2p_scan_running;
403 enum p2p_after_scan {
404 P2P_AFTER_SCAN_NOTHING,
405 P2P_AFTER_SCAN_LISTEN,
406 P2P_AFTER_SCAN_CONNECT
408 u8 after_scan_peer[ETH_ALEN];
409 struct p2p_pending_action_tx *after_scan_tx;
410 unsigned int after_scan_tx_in_progress:1;
411 unsigned int send_action_in_progress:1;
413 /* Requested device types for find/search */
414 unsigned int num_req_dev_types;
417 u8 find_dev_id_buf[ETH_ALEN];
419 struct os_reltime find_start; /* time of last p2p_find start */
421 struct p2p_group **groups;
424 struct p2p_device *pending_client_disc_go;
425 u8 pending_client_disc_addr[ETH_ALEN];
426 u8 pending_dev_disc_dialog_token;
427 u8 pending_dev_disc_addr[ETH_ALEN];
428 int pending_dev_disc_freq;
429 unsigned int pending_client_disc_freq;
432 unsigned int ext_listen_period;
433 unsigned int ext_listen_interval;
434 unsigned int ext_listen_interval_sec;
435 unsigned int ext_listen_interval_usec;
437 u8 peer_filter[ETH_ALEN];
443 int best_freq_overall;
444 int own_freq_preference;
447 * wps_vendor_ext - WPS Vendor Extensions to add
449 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
452 * user_initiated_pd - Whether a PD request is user initiated or not.
454 u8 user_initiated_pd;
457 * Keep track of which peer a given PD request was sent to.
458 * Used to raise a timeout alert in case there is no response.
460 u8 pending_pd_devaddr[ETH_ALEN];
463 * Retry counter for provision discovery requests when issued
469 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
471 * This is is used during PD retries for join-a-group case to use the
472 * correct operating frequency determined from a BSS entry for the GO.
479 /* Extra delay in milliseconds between search iterations */
480 unsigned int search_delay;
483 u8 pending_reg_class;
485 u8 pending_channel_forced;
487 #ifdef CONFIG_WIFI_DISPLAY
488 struct wpabuf *wfd_ie_beacon;
489 struct wpabuf *wfd_ie_probe_req;
490 struct wpabuf *wfd_ie_probe_resp;
491 struct wpabuf *wfd_ie_assoc_req;
492 struct wpabuf *wfd_ie_invitation;
493 struct wpabuf *wfd_ie_prov_disc_req;
494 struct wpabuf *wfd_ie_prov_disc_resp;
495 struct wpabuf *wfd_ie_go_neg;
496 struct wpabuf *wfd_dev_info;
497 struct wpabuf *wfd_assoc_bssid;
498 struct wpabuf *wfd_coupled_sink_info;
499 #endif /* CONFIG_WIFI_DISPLAY */
501 u16 authorized_oob_dev_pw_id;
503 struct wpabuf **vendor_elem;
507 * struct p2p_message - Parsed P2P message (or P2P IE)
510 struct wpabuf *p2p_attributes;
511 struct wpabuf *wps_attributes;
512 struct wpabuf *wfd_subelems;
516 const u8 *capability;
519 const u8 *listen_channel;
520 const u8 *operating_channel;
521 const u8 *channel_list;
523 const u8 *config_timeout;
524 const u8 *intended_addr;
525 const u8 *group_bssid;
526 const u8 *invitation_flags;
528 const u8 *group_info;
529 size_t group_info_len;
536 const u8 *manageability;
541 const u8 *ext_listen_timing;
543 const u8 *minor_reason_code;
545 const u8 *oob_go_neg_channel;
547 /* P2P Device Info */
548 const u8 *p2p_device_info;
549 size_t p2p_device_info_len;
550 const u8 *p2p_device_addr;
551 const u8 *pri_dev_type;
552 u8 num_sec_dev_types;
553 char device_name[33];
558 int dev_password_id_present;
559 u16 wps_config_methods;
560 const u8 *wps_pri_dev_type;
561 const u8 *wps_sec_dev_type_list;
562 size_t wps_sec_dev_type_list_len;
563 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
564 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
565 const u8 *manufacturer;
566 size_t manufacturer_len;
567 const u8 *model_name;
568 size_t model_name_len;
569 const u8 *model_number;
570 size_t model_number_len;
571 const u8 *serial_number;
572 size_t serial_number_len;
573 const u8 *oob_dev_password;
574 size_t oob_dev_password_len;
576 /* DS Parameter Set IE */
584 #define P2P_MAX_GROUP_ENTRIES 50
586 struct p2p_group_info {
587 unsigned int num_clients;
588 struct p2p_client_info {
589 const u8 *p2p_device_addr;
590 const u8 *p2p_interface_addr;
593 const u8 *pri_dev_type;
594 u8 num_sec_dev_types;
595 const u8 *sec_dev_types;
596 const char *dev_name;
598 } client[P2P_MAX_GROUP_ENTRIES];
603 int p2p_random(char *buf, size_t len);
604 int p2p_channel_to_freq(int op_class, int channel);
605 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
606 void p2p_channels_intersect(const struct p2p_channels *a,
607 const struct p2p_channels *b,
608 struct p2p_channels *res);
609 void p2p_channels_union(const struct p2p_channels *a,
610 const struct p2p_channels *b,
611 struct p2p_channels *res);
612 void p2p_channels_remove_freqs(struct p2p_channels *chan,
613 const struct wpa_freq_range_list *list);
614 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
616 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
617 const struct p2p_channels *chan);
618 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
619 u8 *op_class, u8 *op_channel);
620 int p2p_channel_random_social(struct p2p_channels *chans, u8 *op_class,
624 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
625 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
626 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
627 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
628 size_t p2p_len, struct p2p_message *msg);
629 void p2p_parse_free(struct p2p_message *msg);
630 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
631 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
632 struct p2p_group_info *info);
636 struct p2p_noa_desc {
644 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
645 u8 p2p_group_presence_req(struct p2p_group *group,
646 const u8 *client_interface_addr,
647 const u8 *noa, size_t noa_len);
648 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
649 size_t group_id_len);
650 void p2p_group_update_ies(struct p2p_group *group);
651 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
652 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
653 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
655 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
656 int p2p_group_get_freq(struct p2p_group *group);
659 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
660 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
662 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
663 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
664 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
665 struct p2p_device *peer);
666 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
667 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
668 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
669 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
670 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
671 u8 reg_class, u8 channel);
672 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
673 u8 reg_class, u8 channel);
674 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
675 struct p2p_channels *chan);
676 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
678 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
679 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
680 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
681 const u8 *ssid, size_t ssid_len);
682 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
683 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
684 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
685 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
687 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
688 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
689 u8 oper_class, u8 channel,
690 enum p2p_role_indication role);
691 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
695 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
696 struct p2p_device *dev);
697 void p2p_free_sd_queries(struct p2p_data *p2p);
698 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
699 const u8 *data, size_t len, int rx_freq);
700 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
701 const u8 *data, size_t len, int rx_freq);
702 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
703 const u8 *data, size_t len, int rx_freq);
704 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
705 const u8 *data, size_t len, int rx_freq);
706 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
709 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
710 struct p2p_device *dev,
711 const u8 *channel_list, size_t channel_list_len);
712 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
713 const u8 *data, size_t len, int rx_freq);
714 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
715 const u8 *data, size_t len, int rx_freq);
716 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
717 const u8 *data, size_t len);
718 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
719 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
720 void p2p_reselect_channel(struct p2p_data *p2p,
721 struct p2p_channels *intersection);
724 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
725 const u8 *data, size_t len, int rx_freq);
726 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
727 const u8 *data, size_t len);
728 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
729 int join, int force_freq);
730 void p2p_reset_pending_pd(struct p2p_data *p2p);
732 /* p2p_invitation.c */
733 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
734 const u8 *data, size_t len, int rx_freq);
735 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
736 const u8 *data, size_t len);
737 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
738 const u8 *go_dev_addr, int dev_pw_id);
739 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
740 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
743 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
744 const u8 *data, size_t len, int rx_freq);
745 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
746 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
747 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
748 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
749 const u8 *data, size_t len);
750 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
751 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
752 const u8 *data, size_t len, int rx_freq);
755 void p2p_set_state(struct p2p_data *p2p, int new_state);
756 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
758 void p2p_clear_timeout(struct p2p_data *p2p);
759 void p2p_continue_find(struct p2p_data *p2p);
760 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
762 struct p2p_message *msg);
763 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
764 struct p2p_device *dev, struct p2p_message *msg);
765 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
766 struct os_reltime *rx_time, int level, const u8 *ies,
767 size_t ies_len, int scan_res);
768 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
769 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
771 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
773 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
774 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
775 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
776 size_t num_req_dev_type);
777 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
778 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
779 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
780 const u8 *src, const u8 *bssid, const u8 *buf,
781 size_t len, unsigned int wait_time);
782 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
783 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
784 unsigned int force_freq, unsigned int pref_freq,
786 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
788 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
790 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)