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"
22 * struct p2p_device - P2P Device data (internal to P2P module)
26 struct os_time last_seen;
28 enum p2p_wps_method wps_method;
30 struct p2p_peer_info info;
33 * If the peer was discovered based on an interface address (e.g., GO
34 * from Beacon/Probe Response), the interface address is stored here.
35 * p2p_device_addr must still be set in such a case to the unique
36 * identifier for the P2P Device.
38 u8 interface_addr[ETH_ALEN];
41 * P2P Device Address of the GO in whose group this P2P Device is a
44 u8 member_in_go_dev[ETH_ALEN];
47 * P2P Interface Address of the GO in whose group this P2P Device is a
50 u8 member_in_go_iface[ETH_ALEN];
53 enum p2p_go_state go_state;
55 u8 intended_addr[ETH_ALEN];
58 struct p2p_channels channels;
64 * req_config_methods - Pending provision discovery methods
66 u16 req_config_methods;
69 * wps_prov_info - Stored provisioning WPS config method
71 * This is used to store pending WPS config method between Provisioning
72 * Discovery and connection to a running group.
76 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
77 #define P2P_DEV_REPORTED BIT(1)
78 #define P2P_DEV_NOT_YET_READY BIT(2)
79 #define P2P_DEV_SD_INFO BIT(3)
80 #define P2P_DEV_SD_SCHEDULE BIT(4)
81 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
82 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
83 #define P2P_DEV_USER_REJECTED BIT(7)
84 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
85 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
86 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
87 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
88 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
89 #define P2P_DEV_FORCE_FREQ BIT(13)
90 #define P2P_DEV_PD_FOR_JOIN BIT(14)
91 #define P2P_DEV_REPORTED_ONCE BIT(15)
92 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
93 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
96 int status; /* enum p2p_status_code */
97 unsigned int wait_count;
98 unsigned int connect_reqs;
99 unsigned int invitation_reqs;
101 u16 ext_listen_period;
102 u16 ext_listen_interval;
108 struct p2p_sd_query {
109 struct p2p_sd_query *next;
112 int wsd; /* Wi-Fi Display Service Discovery Request */
116 struct p2p_pending_action_tx {
122 unsigned int wait_time;
123 /* Followed by len octets of the frame */
127 * struct p2p_data - P2P module data (internal to P2P module)
131 * cfg - P2P module configuration
133 * This is included in the same memory allocation with the
134 * struct p2p_data and as such, must not be freed separately.
136 struct p2p_config *cfg;
139 * state - The current P2P state
148 * P2P_SEARCH - Search (Device Discovery)
153 * P2P_CONNECT - Trying to start GO Negotiation
158 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
163 * P2P_GO_NEG - In GO Negotiation
168 * P2P_LISTEN_ONLY - Listen only
173 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
175 P2P_WAIT_PEER_CONNECT,
178 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
183 * P2P_SD_DURING_FIND - Service Discovery during find
188 * P2P_PROVISIONING - Provisioning (during group formation)
193 * P2P_PD_DURING_FIND - Provision Discovery during find
198 * P2P_INVITE - Trying to start Invite
203 * P2P_INVITE_LISTEN - Listen during Invite
208 * P2P_SEARCH_WHEN_READY - Waiting to start Search
210 P2P_SEARCH_WHEN_READY,
213 * P2P_CONTINUE_SEARCH_WHEN_READY - Waiting to continue Search
215 P2P_CONTINUE_SEARCH_WHEN_READY,
219 * min_disc_int - minDiscoverableInterval
224 * max_disc_int - maxDiscoverableInterval
229 * max_disc_tu - Maximum number of TUs for discoverable interval
234 * devices - List of known P2P Device peers
236 struct dl_list devices;
240 * sd_dev_list - device pointer to be serviced next
241 * for service discovery
243 struct dl_list *sd_dev_list;
247 * go_neg_peer - Pointer to GO Negotiation peer
249 struct p2p_device *go_neg_peer;
252 * invite_peer - Pointer to Invite peer
254 struct p2p_device *invite_peer;
256 const u8 *invite_go_dev_addr;
257 u8 invite_go_dev_addr_buf[ETH_ALEN];
260 * sd_peer - Pointer to Service Discovery peer
262 struct p2p_device *sd_peer;
265 * sd_query - Pointer to Service Discovery query
267 struct p2p_sd_query *sd_query;
269 /* GO Negotiation data */
272 * intended_addr - Local Intended P2P Interface Address
274 * This address is used during group owner negotiation as the Intended
275 * P2P Interface Address and the group interface will be created with
276 * address as the local address in case of successfully completed
279 u8 intended_addr[ETH_ALEN];
282 * go_intent - Local GO Intent to be used during GO Negotiation
287 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
292 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
297 * ssid_len - ssid length in octets
302 * ssid_set - Whether SSID is already set for GO Negotiation
307 * Regulatory class for own operational channel
312 * op_channel - Own operational channel
317 * channels - Own supported regulatory classes and channels
319 * List of supposerted channels per regulatory class. The regulatory
320 * classes are defined in IEEE Std 802.11-2007 Annex J and the
321 * numbering of the clases depends on the configured country code.
323 struct p2p_channels channels;
325 enum p2p_pending_action_state {
326 P2P_NO_PENDING_ACTION,
327 P2P_PENDING_GO_NEG_REQUEST,
328 P2P_PENDING_GO_NEG_RESPONSE,
329 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
330 P2P_PENDING_GO_NEG_CONFIRM,
333 P2P_PENDING_INVITATION_REQUEST,
334 P2P_PENDING_INVITATION_RESPONSE,
335 P2P_PENDING_DEV_DISC_REQUEST,
336 P2P_PENDING_DEV_DISC_RESPONSE,
337 P2P_PENDING_GO_DISC_REQ
338 } pending_action_state;
340 unsigned int pending_listen_freq;
341 unsigned int pending_listen_sec;
342 unsigned int pending_listen_usec;
350 * sd_queries - Pending service discovery queries
352 struct p2p_sd_query *sd_queries;
355 * srv_update_indic - Service Update Indicator for local services
357 u16 srv_update_indic;
360 * srv_count - Registered services count
364 struct wpabuf *sd_resp; /* Fragmented SD response */
365 u8 sd_resp_addr[ETH_ALEN];
366 u8 sd_resp_dialog_token;
367 size_t sd_resp_pos; /* Offset in sd_resp */
370 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
371 u16 sd_rx_update_indic;
373 /* P2P Invitation data */
374 enum p2p_invite_role inv_role;
375 u8 inv_bssid[ETH_ALEN];
380 u8 inv_group_bssid[ETH_ALEN];
381 u8 *inv_group_bssid_ptr;
382 u8 inv_go_dev_addr[ETH_ALEN];
387 enum p2p_discovery_type find_type;
388 unsigned int last_p2p_find_timeout;
389 u8 last_prog_scan_class;
390 u8 last_prog_scan_chan;
391 int p2p_scan_running;
392 enum p2p_after_scan {
393 P2P_AFTER_SCAN_NOTHING,
394 P2P_AFTER_SCAN_LISTEN,
395 P2P_AFTER_SCAN_CONNECT
397 u8 after_scan_peer[ETH_ALEN];
398 struct p2p_pending_action_tx *after_scan_tx;
400 /* Requested device types for find/search */
401 unsigned int num_req_dev_types;
404 u8 find_dev_id_buf[ETH_ALEN];
406 struct p2p_group **groups;
409 struct p2p_device *pending_client_disc_go;
410 u8 pending_client_disc_addr[ETH_ALEN];
411 u8 pending_dev_disc_dialog_token;
412 u8 pending_dev_disc_addr[ETH_ALEN];
413 int pending_dev_disc_freq;
414 unsigned int pending_client_disc_freq;
417 unsigned int ext_listen_period;
418 unsigned int ext_listen_interval;
419 unsigned int ext_listen_interval_sec;
420 unsigned int ext_listen_interval_usec;
422 u8 peer_filter[ETH_ALEN];
428 int best_freq_overall;
431 * wps_vendor_ext - WPS Vendor Extensions to add
433 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
436 * user_initiated_pd - Whether a PD request is user initiated or not.
438 u8 user_initiated_pd;
441 * Keep track of which peer a given PD request was sent to.
442 * Used to raise a timeout alert in case there is no response.
444 u8 pending_pd_devaddr[ETH_ALEN];
447 * Retry counter for provision discovery requests when issued
455 /* Extra delay in milliseconds between search iterations */
456 unsigned int search_delay;
459 #ifdef CONFIG_WIFI_DISPLAY
460 struct wpabuf *wfd_ie_beacon;
461 struct wpabuf *wfd_ie_probe_req;
462 struct wpabuf *wfd_ie_probe_resp;
463 struct wpabuf *wfd_ie_assoc_req;
464 struct wpabuf *wfd_ie_invitation;
465 struct wpabuf *wfd_ie_prov_disc_req;
466 struct wpabuf *wfd_ie_prov_disc_resp;
467 struct wpabuf *wfd_ie_go_neg;
468 struct wpabuf *wfd_dev_info;
469 struct wpabuf *wfd_assoc_bssid;
470 struct wpabuf *wfd_coupled_sink_info;
471 #endif /* CONFIG_WIFI_DISPLAY */
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 /* P2P Device Info */
514 const u8 *p2p_device_info;
515 size_t p2p_device_info_len;
516 const u8 *p2p_device_addr;
517 const u8 *pri_dev_type;
518 u8 num_sec_dev_types;
519 char device_name[33];
524 u16 wps_config_methods;
525 const u8 *wps_pri_dev_type;
526 const u8 *wps_sec_dev_type_list;
527 size_t wps_sec_dev_type_list_len;
528 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
529 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
530 const u8 *manufacturer;
531 size_t manufacturer_len;
532 const u8 *model_name;
533 size_t model_name_len;
534 const u8 *model_number;
535 size_t model_number_len;
536 const u8 *serial_number;
537 size_t serial_number_len;
539 /* DS Parameter Set IE */
547 #define P2P_MAX_GROUP_ENTRIES 50
549 struct p2p_group_info {
550 unsigned int num_clients;
551 struct p2p_client_info {
552 const u8 *p2p_device_addr;
553 const u8 *p2p_interface_addr;
556 const u8 *pri_dev_type;
557 u8 num_sec_dev_types;
558 const u8 *sec_dev_types;
559 const char *dev_name;
561 } client[P2P_MAX_GROUP_ENTRIES];
566 int p2p_random(char *buf, size_t len);
567 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
568 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
570 void p2p_channels_intersect(const struct p2p_channels *a,
571 const struct p2p_channels *b,
572 struct p2p_channels *res);
573 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
577 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
578 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
579 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
580 void p2p_parse_free(struct p2p_message *msg);
581 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
582 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
583 struct p2p_group_info *info);
587 struct p2p_noa_desc {
595 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
596 u8 p2p_group_presence_req(struct p2p_group *group,
597 const u8 *client_interface_addr,
598 const u8 *noa, size_t noa_len);
599 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
600 size_t group_id_len);
601 void p2p_group_update_ies(struct p2p_group *group);
602 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
605 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
606 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
608 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
609 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
610 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
611 struct p2p_device *peer);
612 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
613 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
614 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
615 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
616 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
617 u8 reg_class, u8 channel);
618 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
619 u8 reg_class, u8 channel);
620 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
621 struct p2p_channels *chan);
622 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
624 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
625 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
626 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
627 const u8 *ssid, size_t ssid_len);
628 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
629 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
630 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
631 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
633 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
634 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
638 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
639 struct p2p_device *dev);
640 void p2p_free_sd_queries(struct p2p_data *p2p);
641 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
642 const u8 *data, size_t len, int rx_freq);
643 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
644 const u8 *data, size_t len, int rx_freq);
645 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
646 const u8 *data, size_t len, int rx_freq);
647 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
648 const u8 *data, size_t len, int rx_freq);
649 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
652 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
653 struct p2p_device *dev,
654 const u8 *channel_list, size_t channel_list_len);
655 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
656 const u8 *data, size_t len, int rx_freq);
657 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
658 const u8 *data, size_t len, int rx_freq);
659 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
660 const u8 *data, size_t len);
661 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
662 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
663 void p2p_reselect_channel(struct p2p_data *p2p,
664 struct p2p_channels *intersection);
667 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
668 const u8 *data, size_t len, int rx_freq);
669 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
670 const u8 *data, size_t len);
671 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
672 int join, int force_freq);
673 void p2p_reset_pending_pd(struct p2p_data *p2p);
675 /* p2p_invitation.c */
676 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
677 const u8 *data, size_t len, int rx_freq);
678 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
679 const u8 *data, size_t len);
680 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
681 const u8 *go_dev_addr);
682 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
683 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
686 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
687 const u8 *data, size_t len, int rx_freq);
688 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
689 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
690 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
691 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
692 const u8 *data, size_t len);
693 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
694 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
695 const u8 *data, size_t len, int rx_freq);
698 void p2p_set_state(struct p2p_data *p2p, int new_state);
699 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
701 void p2p_clear_timeout(struct p2p_data *p2p);
702 void p2p_continue_find(struct p2p_data *p2p);
703 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
705 struct p2p_message *msg);
706 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
707 struct p2p_device *dev, struct p2p_message *msg);
708 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
709 unsigned int age_ms, int level, const u8 *ies,
710 size_t ies_len, int scan_res);
711 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
712 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
714 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
716 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
717 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
718 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
719 size_t num_req_dev_type);
720 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
721 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
722 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
723 const u8 *src, const u8 *bssid, const u8 *buf,
724 size_t len, unsigned int wait_time);
725 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);