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_reltime 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;
56 u8 intended_addr[ETH_ALEN];
59 struct p2p_channels channels;
65 * req_config_methods - Pending provision discovery methods
67 u16 req_config_methods;
70 * wps_prov_info - Stored provisioning WPS config method
72 * This is used to store pending WPS config method between Provisioning
73 * Discovery and connection to a running group.
77 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
78 #define P2P_DEV_REPORTED BIT(1)
79 #define P2P_DEV_NOT_YET_READY BIT(2)
80 #define P2P_DEV_SD_INFO BIT(3)
81 #define P2P_DEV_SD_SCHEDULE BIT(4)
82 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
83 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
84 #define P2P_DEV_USER_REJECTED BIT(7)
85 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
86 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
87 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
88 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
89 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
90 #define P2P_DEV_FORCE_FREQ BIT(13)
91 #define P2P_DEV_PD_FOR_JOIN BIT(14)
92 #define P2P_DEV_REPORTED_ONCE BIT(15)
93 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
94 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
95 #define P2P_DEV_NO_PREF_CHAN BIT(18)
98 int status; /* enum p2p_status_code */
99 unsigned int wait_count;
100 unsigned int connect_reqs;
101 unsigned int invitation_reqs;
103 u16 ext_listen_period;
104 u16 ext_listen_interval;
110 struct p2p_sd_query {
111 struct p2p_sd_query *next;
114 int wsd; /* Wi-Fi Display Service Discovery Request */
118 struct p2p_pending_action_tx {
124 unsigned int wait_time;
125 /* Followed by len octets of the frame */
129 * struct p2p_data - P2P module data (internal to P2P module)
133 * cfg - P2P module configuration
135 * This is included in the same memory allocation with the
136 * struct p2p_data and as such, must not be freed separately.
138 struct p2p_config *cfg;
141 * state - The current P2P state
150 * P2P_SEARCH - Search (Device Discovery)
155 * P2P_CONNECT - Trying to start GO Negotiation
160 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
165 * P2P_GO_NEG - In GO Negotiation
170 * P2P_LISTEN_ONLY - Listen only
175 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
177 P2P_WAIT_PEER_CONNECT,
180 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
185 * P2P_SD_DURING_FIND - Service Discovery during find
190 * P2P_PROVISIONING - Provisioning (during group formation)
195 * P2P_PD_DURING_FIND - Provision Discovery during find
200 * P2P_INVITE - Trying to start Invite
205 * P2P_INVITE_LISTEN - Listen during Invite
211 * min_disc_int - minDiscoverableInterval
216 * max_disc_int - maxDiscoverableInterval
221 * max_disc_tu - Maximum number of TUs for discoverable interval
226 * devices - List of known P2P Device peers
228 struct dl_list devices;
231 * go_neg_peer - Pointer to GO Negotiation peer
233 struct p2p_device *go_neg_peer;
236 * invite_peer - Pointer to Invite peer
238 struct p2p_device *invite_peer;
240 const u8 *invite_go_dev_addr;
241 u8 invite_go_dev_addr_buf[ETH_ALEN];
244 * sd_peer - Pointer to Service Discovery peer
246 struct p2p_device *sd_peer;
249 * sd_query - Pointer to Service Discovery query
251 struct p2p_sd_query *sd_query;
253 /* GO Negotiation data */
256 * intended_addr - Local Intended P2P Interface Address
258 * This address is used during group owner negotiation as the Intended
259 * P2P Interface Address and the group interface will be created with
260 * address as the local address in case of successfully completed
263 u8 intended_addr[ETH_ALEN];
266 * go_intent - Local GO Intent to be used during GO Negotiation
271 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
276 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
281 * ssid_len - ssid length in octets
286 * ssid_set - Whether SSID is already set for GO Negotiation
291 * Regulatory class for own operational channel
296 * op_channel - Own operational channel
301 * channels - Own supported regulatory classes and channels
303 * List of supposerted channels per regulatory class. The regulatory
304 * classes are defined in IEEE Std 802.11-2007 Annex J and the
305 * numbering of the clases depends on the configured country code.
307 struct p2p_channels channels;
309 struct wpa_freq_range_list no_go_freq;
311 enum p2p_pending_action_state {
312 P2P_NO_PENDING_ACTION,
313 P2P_PENDING_GO_NEG_REQUEST,
314 P2P_PENDING_GO_NEG_RESPONSE,
315 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
316 P2P_PENDING_GO_NEG_CONFIRM,
319 P2P_PENDING_INVITATION_REQUEST,
320 P2P_PENDING_INVITATION_RESPONSE,
321 P2P_PENDING_DEV_DISC_REQUEST,
322 P2P_PENDING_DEV_DISC_RESPONSE,
323 P2P_PENDING_GO_DISC_REQ
324 } pending_action_state;
326 unsigned int pending_listen_freq;
327 unsigned int pending_listen_sec;
328 unsigned int pending_listen_usec;
336 * sd_queries - Pending service discovery queries
338 struct p2p_sd_query *sd_queries;
341 * srv_update_indic - Service Update Indicator for local services
343 u16 srv_update_indic;
345 struct wpabuf *sd_resp; /* Fragmented SD response */
346 u8 sd_resp_addr[ETH_ALEN];
347 u8 sd_resp_dialog_token;
348 size_t sd_resp_pos; /* Offset in sd_resp */
351 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
352 u16 sd_rx_update_indic;
354 /* P2P Invitation data */
355 enum p2p_invite_role inv_role;
356 u8 inv_bssid[ETH_ALEN];
361 u8 inv_group_bssid[ETH_ALEN];
362 u8 *inv_group_bssid_ptr;
363 u8 inv_go_dev_addr[ETH_ALEN];
368 enum p2p_discovery_type find_type;
369 unsigned int last_p2p_find_timeout;
370 u8 last_prog_scan_class;
371 u8 last_prog_scan_chan;
372 int p2p_scan_running;
373 enum p2p_after_scan {
374 P2P_AFTER_SCAN_NOTHING,
375 P2P_AFTER_SCAN_LISTEN,
376 P2P_AFTER_SCAN_CONNECT
378 u8 after_scan_peer[ETH_ALEN];
379 struct p2p_pending_action_tx *after_scan_tx;
380 unsigned int after_scan_tx_in_progress:1;
382 /* Requested device types for find/search */
383 unsigned int num_req_dev_types;
386 u8 find_dev_id_buf[ETH_ALEN];
388 struct os_reltime find_start; /* time of last p2p_find start */
390 struct p2p_group **groups;
393 struct p2p_device *pending_client_disc_go;
394 u8 pending_client_disc_addr[ETH_ALEN];
395 u8 pending_dev_disc_dialog_token;
396 u8 pending_dev_disc_addr[ETH_ALEN];
397 int pending_dev_disc_freq;
398 unsigned int pending_client_disc_freq;
401 unsigned int ext_listen_period;
402 unsigned int ext_listen_interval;
403 unsigned int ext_listen_interval_sec;
404 unsigned int ext_listen_interval_usec;
406 u8 peer_filter[ETH_ALEN];
412 int best_freq_overall;
413 int own_freq_preference;
416 * wps_vendor_ext - WPS Vendor Extensions to add
418 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
421 * user_initiated_pd - Whether a PD request is user initiated or not.
423 u8 user_initiated_pd;
426 * Keep track of which peer a given PD request was sent to.
427 * Used to raise a timeout alert in case there is no response.
429 u8 pending_pd_devaddr[ETH_ALEN];
432 * Retry counter for provision discovery requests when issued
438 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
440 * This is is used during PD retries for join-a-group case to use the
441 * correct operating frequency determined from a BSS entry for the GO.
448 /* Extra delay in milliseconds between search iterations */
449 unsigned int search_delay;
452 #ifdef CONFIG_WIFI_DISPLAY
453 struct wpabuf *wfd_ie_beacon;
454 struct wpabuf *wfd_ie_probe_req;
455 struct wpabuf *wfd_ie_probe_resp;
456 struct wpabuf *wfd_ie_assoc_req;
457 struct wpabuf *wfd_ie_invitation;
458 struct wpabuf *wfd_ie_prov_disc_req;
459 struct wpabuf *wfd_ie_prov_disc_resp;
460 struct wpabuf *wfd_ie_go_neg;
461 struct wpabuf *wfd_dev_info;
462 struct wpabuf *wfd_assoc_bssid;
463 struct wpabuf *wfd_coupled_sink_info;
464 #endif /* CONFIG_WIFI_DISPLAY */
468 * struct p2p_message - Parsed P2P message (or P2P IE)
471 struct wpabuf *p2p_attributes;
472 struct wpabuf *wps_attributes;
473 struct wpabuf *wfd_subelems;
477 const u8 *capability;
480 const u8 *listen_channel;
481 const u8 *operating_channel;
482 const u8 *channel_list;
484 const u8 *config_timeout;
485 const u8 *intended_addr;
486 const u8 *group_bssid;
487 const u8 *invitation_flags;
489 const u8 *group_info;
490 size_t group_info_len;
497 const u8 *manageability;
502 const u8 *ext_listen_timing;
504 const u8 *minor_reason_code;
506 /* P2P Device Info */
507 const u8 *p2p_device_info;
508 size_t p2p_device_info_len;
509 const u8 *p2p_device_addr;
510 const u8 *pri_dev_type;
511 u8 num_sec_dev_types;
512 char device_name[33];
517 u16 wps_config_methods;
518 const u8 *wps_pri_dev_type;
519 const u8 *wps_sec_dev_type_list;
520 size_t wps_sec_dev_type_list_len;
521 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
522 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
523 const u8 *manufacturer;
524 size_t manufacturer_len;
525 const u8 *model_name;
526 size_t model_name_len;
527 const u8 *model_number;
528 size_t model_number_len;
529 const u8 *serial_number;
530 size_t serial_number_len;
532 /* DS Parameter Set IE */
540 #define P2P_MAX_GROUP_ENTRIES 50
542 struct p2p_group_info {
543 unsigned int num_clients;
544 struct p2p_client_info {
545 const u8 *p2p_device_addr;
546 const u8 *p2p_interface_addr;
549 const u8 *pri_dev_type;
550 u8 num_sec_dev_types;
551 const u8 *sec_dev_types;
552 const char *dev_name;
554 } client[P2P_MAX_GROUP_ENTRIES];
559 int p2p_random(char *buf, size_t len);
560 int p2p_channel_to_freq(int op_class, int channel);
561 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
562 void p2p_channels_intersect(const struct p2p_channels *a,
563 const struct p2p_channels *b,
564 struct p2p_channels *res);
565 void p2p_channels_union(const struct p2p_channels *a,
566 const struct p2p_channels *b,
567 struct p2p_channels *res);
568 void p2p_channels_remove_freqs(struct p2p_channels *chan,
569 const struct wpa_freq_range_list *list);
570 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
572 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
573 const struct p2p_channels *chan);
574 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
575 u8 *op_class, u8 *op_channel);
578 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
579 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
580 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
581 void p2p_parse_free(struct p2p_message *msg);
582 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
583 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
584 struct p2p_group_info *info);
588 struct p2p_noa_desc {
596 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
597 u8 p2p_group_presence_req(struct p2p_group *group,
598 const u8 *client_interface_addr,
599 const u8 *noa, size_t noa_len);
600 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
601 size_t group_id_len);
602 void p2p_group_update_ies(struct p2p_group *group);
603 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
604 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
605 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
607 int p2p_group_get_freq(struct p2p_group *group);
610 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
611 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
613 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
614 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
615 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
616 struct p2p_device *peer);
617 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
618 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
619 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
620 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
621 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
622 u8 reg_class, u8 channel);
623 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
624 u8 reg_class, u8 channel);
625 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
626 struct p2p_channels *chan);
627 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
629 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
630 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
631 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
632 const u8 *ssid, size_t ssid_len);
633 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
634 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
635 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
636 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
638 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
639 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
643 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
644 struct p2p_device *dev);
645 void p2p_free_sd_queries(struct p2p_data *p2p);
646 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
647 const u8 *data, size_t len, int rx_freq);
648 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
649 const u8 *data, size_t len, int rx_freq);
650 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
651 const u8 *data, size_t len, int rx_freq);
652 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
653 const u8 *data, size_t len, int rx_freq);
654 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
657 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
658 struct p2p_device *dev,
659 const u8 *channel_list, size_t channel_list_len);
660 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
661 const u8 *data, size_t len, int rx_freq);
662 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
663 const u8 *data, size_t len, int rx_freq);
664 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
665 const u8 *data, size_t len);
666 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
667 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
668 void p2p_reselect_channel(struct p2p_data *p2p,
669 struct p2p_channels *intersection);
672 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
673 const u8 *data, size_t len, int rx_freq);
674 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
675 const u8 *data, size_t len);
676 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
677 int join, int force_freq);
678 void p2p_reset_pending_pd(struct p2p_data *p2p);
680 /* p2p_invitation.c */
681 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
682 const u8 *data, size_t len, int rx_freq);
683 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
684 const u8 *data, size_t len);
685 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
686 const u8 *go_dev_addr);
687 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
688 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
691 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
692 const u8 *data, size_t len, int rx_freq);
693 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
694 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
695 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
696 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
697 const u8 *data, size_t len);
698 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
699 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
700 const u8 *data, size_t len, int rx_freq);
703 void p2p_set_state(struct p2p_data *p2p, int new_state);
704 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
706 void p2p_clear_timeout(struct p2p_data *p2p);
707 void p2p_continue_find(struct p2p_data *p2p);
708 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
710 struct p2p_message *msg);
711 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
712 struct p2p_device *dev, struct p2p_message *msg);
713 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
714 struct os_reltime *rx_time, int level, const u8 *ies,
715 size_t ies_len, int scan_res);
716 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
717 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
719 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
721 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
722 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
723 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
724 size_t num_req_dev_type);
725 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
726 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
727 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
728 const u8 *src, const u8 *bssid, const u8 *buf,
729 size_t len, unsigned int wait_time);
730 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
731 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
732 unsigned int force_freq, unsigned int pref_freq,
734 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
736 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
738 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)