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;
264 * last_p2p_find_oper - Pointer to last pre-find operation peer
266 struct p2p_device *last_p2p_find_oper;
268 const u8 *invite_go_dev_addr;
269 u8 invite_go_dev_addr_buf[ETH_ALEN];
270 int invite_dev_pw_id;
273 * sd_peer - Pointer to Service Discovery peer
275 struct p2p_device *sd_peer;
278 * sd_query - Pointer to Service Discovery query
280 struct p2p_sd_query *sd_query;
283 * num_p2p_sd_queries - Total number of broadcast SD queries present in
286 int num_p2p_sd_queries;
288 /* GO Negotiation data */
291 * intended_addr - Local Intended P2P Interface Address
293 * This address is used during group owner negotiation as the Intended
294 * P2P Interface Address and the group interface will be created with
295 * address as the local address in case of successfully completed
298 u8 intended_addr[ETH_ALEN];
301 * go_intent - Local GO Intent to be used during GO Negotiation
306 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
311 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
316 * ssid_len - ssid length in octets
321 * ssid_set - Whether SSID is already set for GO Negotiation
326 * Regulatory class for own operational channel
331 * op_channel - Own operational channel
336 * channels - Own supported regulatory classes and channels
338 * List of supposerted channels per regulatory class. The regulatory
339 * classes are defined in IEEE Std 802.11-2007 Annex J and the
340 * numbering of the clases depends on the configured country code.
342 struct p2p_channels channels;
344 struct wpa_freq_range_list no_go_freq;
346 enum p2p_pending_action_state {
347 P2P_NO_PENDING_ACTION,
348 P2P_PENDING_GO_NEG_REQUEST,
349 P2P_PENDING_GO_NEG_RESPONSE,
350 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
351 P2P_PENDING_GO_NEG_CONFIRM,
354 P2P_PENDING_INVITATION_REQUEST,
355 P2P_PENDING_INVITATION_RESPONSE,
356 P2P_PENDING_DEV_DISC_REQUEST,
357 P2P_PENDING_DEV_DISC_RESPONSE,
358 P2P_PENDING_GO_DISC_REQ
359 } pending_action_state;
361 unsigned int pending_listen_freq;
362 unsigned int pending_listen_sec;
363 unsigned int pending_listen_usec;
371 * sd_queries - Pending service discovery queries
373 struct p2p_sd_query *sd_queries;
376 * srv_update_indic - Service Update Indicator for local services
378 u16 srv_update_indic;
380 struct wpabuf *sd_resp; /* Fragmented SD response */
381 u8 sd_resp_addr[ETH_ALEN];
382 u8 sd_resp_dialog_token;
383 size_t sd_resp_pos; /* Offset in sd_resp */
386 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
387 u16 sd_rx_update_indic;
389 /* P2P Invitation data */
390 enum p2p_invite_role inv_role;
391 u8 inv_bssid[ETH_ALEN];
396 u8 inv_group_bssid[ETH_ALEN];
397 u8 *inv_group_bssid_ptr;
398 u8 inv_go_dev_addr[ETH_ALEN];
403 enum p2p_discovery_type find_type;
404 unsigned int last_p2p_find_timeout;
405 u8 last_prog_scan_class;
406 u8 last_prog_scan_chan;
407 int p2p_scan_running;
408 enum p2p_after_scan {
409 P2P_AFTER_SCAN_NOTHING,
410 P2P_AFTER_SCAN_LISTEN,
411 P2P_AFTER_SCAN_CONNECT
413 u8 after_scan_peer[ETH_ALEN];
414 struct p2p_pending_action_tx *after_scan_tx;
415 unsigned int after_scan_tx_in_progress:1;
416 unsigned int send_action_in_progress:1;
418 /* Requested device types for find/search */
419 unsigned int num_req_dev_types;
422 u8 find_dev_id_buf[ETH_ALEN];
424 struct os_reltime find_start; /* time of last p2p_find start */
426 struct p2p_group **groups;
429 struct p2p_device *pending_client_disc_go;
430 u8 pending_client_disc_addr[ETH_ALEN];
431 u8 pending_dev_disc_dialog_token;
432 u8 pending_dev_disc_addr[ETH_ALEN];
433 int pending_dev_disc_freq;
434 unsigned int pending_client_disc_freq;
437 unsigned int ext_listen_period;
438 unsigned int ext_listen_interval;
439 unsigned int ext_listen_interval_sec;
440 unsigned int ext_listen_interval_usec;
442 u8 peer_filter[ETH_ALEN];
448 int best_freq_overall;
449 int own_freq_preference;
452 * wps_vendor_ext - WPS Vendor Extensions to add
454 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
457 * user_initiated_pd - Whether a PD request is user initiated or not.
459 u8 user_initiated_pd;
462 * Keep track of which peer a given PD request was sent to.
463 * Used to raise a timeout alert in case there is no response.
465 u8 pending_pd_devaddr[ETH_ALEN];
468 * Retry counter for provision discovery requests when issued
474 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
476 * This is is used during PD retries for join-a-group case to use the
477 * correct operating frequency determined from a BSS entry for the GO.
484 /* Extra delay in milliseconds between search iterations */
485 unsigned int search_delay;
488 u8 pending_reg_class;
490 u8 pending_channel_forced;
492 #ifdef CONFIG_WIFI_DISPLAY
493 struct wpabuf *wfd_ie_beacon;
494 struct wpabuf *wfd_ie_probe_req;
495 struct wpabuf *wfd_ie_probe_resp;
496 struct wpabuf *wfd_ie_assoc_req;
497 struct wpabuf *wfd_ie_invitation;
498 struct wpabuf *wfd_ie_prov_disc_req;
499 struct wpabuf *wfd_ie_prov_disc_resp;
500 struct wpabuf *wfd_ie_go_neg;
501 struct wpabuf *wfd_dev_info;
502 struct wpabuf *wfd_assoc_bssid;
503 struct wpabuf *wfd_coupled_sink_info;
504 #endif /* CONFIG_WIFI_DISPLAY */
506 u16 authorized_oob_dev_pw_id;
508 struct wpabuf **vendor_elem;
512 * struct p2p_message - Parsed P2P message (or P2P IE)
515 struct wpabuf *p2p_attributes;
516 struct wpabuf *wps_attributes;
517 struct wpabuf *wfd_subelems;
521 const u8 *capability;
524 const u8 *listen_channel;
525 const u8 *operating_channel;
526 const u8 *channel_list;
528 const u8 *config_timeout;
529 const u8 *intended_addr;
530 const u8 *group_bssid;
531 const u8 *invitation_flags;
533 const u8 *group_info;
534 size_t group_info_len;
541 const u8 *manageability;
546 const u8 *ext_listen_timing;
548 const u8 *minor_reason_code;
550 const u8 *oob_go_neg_channel;
552 /* P2P Device Info */
553 const u8 *p2p_device_info;
554 size_t p2p_device_info_len;
555 const u8 *p2p_device_addr;
556 const u8 *pri_dev_type;
557 u8 num_sec_dev_types;
558 char device_name[33];
563 int dev_password_id_present;
564 u16 wps_config_methods;
565 const u8 *wps_pri_dev_type;
566 const u8 *wps_sec_dev_type_list;
567 size_t wps_sec_dev_type_list_len;
568 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
569 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
570 const u8 *manufacturer;
571 size_t manufacturer_len;
572 const u8 *model_name;
573 size_t model_name_len;
574 const u8 *model_number;
575 size_t model_number_len;
576 const u8 *serial_number;
577 size_t serial_number_len;
578 const u8 *oob_dev_password;
579 size_t oob_dev_password_len;
581 /* DS Parameter Set IE */
589 #define P2P_MAX_GROUP_ENTRIES 50
591 struct p2p_group_info {
592 unsigned int num_clients;
593 struct p2p_client_info {
594 const u8 *p2p_device_addr;
595 const u8 *p2p_interface_addr;
598 const u8 *pri_dev_type;
599 u8 num_sec_dev_types;
600 const u8 *sec_dev_types;
601 const char *dev_name;
603 } client[P2P_MAX_GROUP_ENTRIES];
608 int p2p_random(char *buf, size_t len);
609 int p2p_channel_to_freq(int op_class, int channel);
610 int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel);
611 void p2p_channels_intersect(const struct p2p_channels *a,
612 const struct p2p_channels *b,
613 struct p2p_channels *res);
614 void p2p_channels_union(const struct p2p_channels *a,
615 const struct p2p_channels *b,
616 struct p2p_channels *res);
617 void p2p_channels_remove_freqs(struct p2p_channels *chan,
618 const struct wpa_freq_range_list *list);
619 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
621 void p2p_channels_dump(struct p2p_data *p2p, const char *title,
622 const struct p2p_channels *chan);
623 int p2p_channel_select(struct p2p_channels *chans, const int *classes,
624 u8 *op_class, u8 *op_channel);
625 int p2p_channel_random_social(struct p2p_channels *chans, u8 *op_class,
629 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
630 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
631 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
632 int p2p_parse_ies_separate(const u8 *wsc, size_t wsc_len, const u8 *p2p,
633 size_t p2p_len, struct p2p_message *msg);
634 void p2p_parse_free(struct p2p_message *msg);
635 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
636 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
637 struct p2p_group_info *info);
641 struct p2p_noa_desc {
649 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
650 u8 p2p_group_presence_req(struct p2p_group *group,
651 const u8 *client_interface_addr,
652 const u8 *noa, size_t noa_len);
653 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
654 size_t group_id_len);
655 void p2p_group_update_ies(struct p2p_group *group);
656 void p2p_group_force_beacon_update_ies(struct p2p_group *group);
657 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g);
658 void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf,
660 void p2p_group_buf_add_id(struct p2p_group *group, struct wpabuf *buf);
661 int p2p_group_get_freq(struct p2p_group *group);
664 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
665 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
667 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
668 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
669 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
670 struct p2p_device *peer);
671 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
672 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
673 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
674 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
675 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
676 u8 reg_class, u8 channel);
677 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
678 u8 reg_class, u8 channel);
679 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
680 struct p2p_channels *chan);
681 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
683 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
684 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
685 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
686 const u8 *ssid, size_t ssid_len);
687 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
688 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
689 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
690 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
692 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
693 void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country,
694 u8 oper_class, u8 channel,
695 enum p2p_role_indication role);
696 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
700 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
701 struct p2p_device *dev);
702 void p2p_free_sd_queries(struct p2p_data *p2p);
703 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
704 const u8 *data, size_t len, int rx_freq);
705 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
706 const u8 *data, size_t len, int rx_freq);
707 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
708 const u8 *data, size_t len, int rx_freq);
709 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
710 const u8 *data, size_t len, int rx_freq);
711 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
714 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
715 struct p2p_device *dev,
716 const u8 *channel_list, size_t channel_list_len);
717 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
718 const u8 *data, size_t len, int rx_freq);
719 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
720 const u8 *data, size_t len, int rx_freq);
721 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
722 const u8 *data, size_t len);
723 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
724 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
725 void p2p_reselect_channel(struct p2p_data *p2p,
726 struct p2p_channels *intersection);
729 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
730 const u8 *data, size_t len, int rx_freq);
731 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
732 const u8 *data, size_t len);
733 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
734 int join, int force_freq);
735 void p2p_reset_pending_pd(struct p2p_data *p2p);
737 /* p2p_invitation.c */
738 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
739 const u8 *data, size_t len, int rx_freq);
740 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
741 const u8 *data, size_t len);
742 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
743 const u8 *go_dev_addr, int dev_pw_id);
744 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
745 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
748 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
749 const u8 *data, size_t len, int rx_freq);
750 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
751 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
752 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
753 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
754 const u8 *data, size_t len);
755 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
756 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
757 const u8 *data, size_t len, int rx_freq);
760 void p2p_set_state(struct p2p_data *p2p, int new_state);
761 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
763 void p2p_clear_timeout(struct p2p_data *p2p);
764 void p2p_continue_find(struct p2p_data *p2p);
765 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
767 struct p2p_message *msg);
768 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
769 struct p2p_device *dev, struct p2p_message *msg);
770 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
771 struct os_reltime *rx_time, int level, const u8 *ies,
772 size_t ies_len, int scan_res);
773 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
774 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
776 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
778 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
779 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
780 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
781 size_t num_req_dev_type);
782 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
783 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
784 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
785 const u8 *src, const u8 *bssid, const u8 *buf,
786 size_t len, unsigned int wait_time);
787 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
788 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
789 unsigned int force_freq, unsigned int pref_freq,
791 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
793 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
795 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)