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)
95 int status; /* enum p2p_status_code */
96 unsigned int wait_count;
97 unsigned int connect_reqs;
98 unsigned int invitation_reqs;
100 u16 ext_listen_period;
101 u16 ext_listen_interval;
107 struct p2p_sd_query {
108 struct p2p_sd_query *next;
114 struct p2p_pending_action_tx {
120 unsigned int wait_time;
121 /* Followed by len octets of the frame */
125 * struct p2p_data - P2P module data (internal to P2P module)
129 * cfg - P2P module configuration
131 * This is included in the same memory allocation with the
132 * struct p2p_data and as such, must not be freed separately.
134 struct p2p_config *cfg;
137 * state - The current P2P state
146 * P2P_SEARCH - Search (Device Discovery)
151 * P2P_CONNECT - Trying to start GO Negotiation
156 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
161 * P2P_GO_NEG - In GO Negotiation
166 * P2P_LISTEN_ONLY - Listen only
171 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
173 P2P_WAIT_PEER_CONNECT,
176 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
181 * P2P_SD_DURING_FIND - Service Discovery during find
186 * P2P_PROVISIONING - Provisioning (during group formation)
191 * P2P_PD_DURING_FIND - Provision Discovery during find
196 * P2P_INVITE - Trying to start Invite
201 * P2P_INVITE_LISTEN - Listen during Invite
206 * P2P_SEARCH_WHEN_READY - Waiting to start Search
208 P2P_SEARCH_WHEN_READY,
212 * min_disc_int - minDiscoverableInterval
217 * max_disc_int - maxDiscoverableInterval
222 * devices - List of known P2P Device peers
224 struct dl_list devices;
228 * sd_dev_list - device pointer to be serviced next
229 * for service discovery
231 struct dl_list *sd_dev_list;
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];
248 * sd_peer - Pointer to Service Discovery peer
250 struct p2p_device *sd_peer;
253 * sd_query - Pointer to Service Discovery query
255 struct p2p_sd_query *sd_query;
257 /* GO Negotiation data */
260 * intended_addr - Local Intended P2P Interface Address
262 * This address is used during group owner negotiation as the Intended
263 * P2P Interface Address and the group interface will be created with
264 * address as the local address in case of successfully completed
267 u8 intended_addr[ETH_ALEN];
270 * go_intent - Local GO Intent to be used during GO Negotiation
275 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
280 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
285 * ssid_len - ssid length in octets
290 * ssid_set - Whether SSID is already set for GO Negotiation
295 * Regulatory class for own operational channel
300 * op_channel - Own operational channel
305 * channels - Own supported regulatory classes and channels
307 * List of supposerted channels per regulatory class. The regulatory
308 * classes are defined in IEEE Std 802.11-2007 Annex J and the
309 * numbering of the clases depends on the configured country code.
311 struct p2p_channels channels;
313 enum p2p_pending_action_state {
314 P2P_NO_PENDING_ACTION,
315 P2P_PENDING_GO_NEG_REQUEST,
316 P2P_PENDING_GO_NEG_RESPONSE,
317 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
318 P2P_PENDING_GO_NEG_CONFIRM,
321 P2P_PENDING_INVITATION_REQUEST,
322 P2P_PENDING_INVITATION_RESPONSE,
323 P2P_PENDING_DEV_DISC_REQUEST,
324 P2P_PENDING_DEV_DISC_RESPONSE,
325 P2P_PENDING_GO_DISC_REQ
326 } pending_action_state;
328 unsigned int pending_listen_freq;
329 unsigned int pending_listen_sec;
330 unsigned int pending_listen_usec;
338 * sd_queries - Pending service discovery queries
340 struct p2p_sd_query *sd_queries;
343 * srv_update_indic - Service Update Indicator for local services
345 u16 srv_update_indic;
347 struct wpabuf *sd_resp; /* Fragmented SD response */
348 u8 sd_resp_addr[ETH_ALEN];
349 u8 sd_resp_dialog_token;
350 size_t sd_resp_pos; /* Offset in sd_resp */
353 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
354 u16 sd_rx_update_indic;
356 /* P2P Invitation data */
357 enum p2p_invite_role inv_role;
358 u8 inv_bssid[ETH_ALEN];
363 u8 inv_group_bssid[ETH_ALEN];
364 u8 *inv_group_bssid_ptr;
365 u8 inv_go_dev_addr[ETH_ALEN];
370 enum p2p_discovery_type find_type;
371 unsigned int last_p2p_find_timeout;
372 u8 last_prog_scan_class;
373 u8 last_prog_scan_chan;
374 int p2p_scan_running;
375 enum p2p_after_scan {
376 P2P_AFTER_SCAN_NOTHING,
377 P2P_AFTER_SCAN_LISTEN,
378 P2P_AFTER_SCAN_CONNECT
380 u8 after_scan_peer[ETH_ALEN];
381 struct p2p_pending_action_tx *after_scan_tx;
383 /* Requested device types for find/search */
384 unsigned int num_req_dev_types;
387 u8 find_dev_id_buf[ETH_ALEN];
389 struct p2p_group **groups;
392 struct p2p_device *pending_client_disc_go;
393 u8 pending_client_disc_addr[ETH_ALEN];
394 u8 pending_dev_disc_dialog_token;
395 u8 pending_dev_disc_addr[ETH_ALEN];
396 int pending_dev_disc_freq;
397 unsigned int pending_client_disc_freq;
400 unsigned int ext_listen_period;
401 unsigned int ext_listen_interval;
402 unsigned int ext_listen_interval_sec;
403 unsigned int ext_listen_interval_usec;
405 u8 peer_filter[ETH_ALEN];
411 int best_freq_overall;
414 * wps_vendor_ext - WPS Vendor Extensions to add
416 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
419 * user_initiated_pd - Whether a PD request is user initiated or not.
421 u8 user_initiated_pd;
424 * Keep track of which peer a given PD request was sent to.
425 * Used to raise a timeout alert in case there is no response.
427 u8 pending_pd_devaddr[ETH_ALEN];
430 * Retry counter for provision discovery requests when issued
437 * struct p2p_message - Parsed P2P message (or P2P IE)
440 struct wpabuf *p2p_attributes;
441 struct wpabuf *wps_attributes;
445 const u8 *capability;
448 const u8 *listen_channel;
449 const u8 *operating_channel;
450 const u8 *channel_list;
452 const u8 *config_timeout;
453 const u8 *intended_addr;
454 const u8 *group_bssid;
455 const u8 *invitation_flags;
457 const u8 *group_info;
458 size_t group_info_len;
465 const u8 *manageability;
470 const u8 *ext_listen_timing;
472 const u8 *minor_reason_code;
474 /* P2P Device Info */
475 const u8 *p2p_device_info;
476 size_t p2p_device_info_len;
477 const u8 *p2p_device_addr;
478 const u8 *pri_dev_type;
479 u8 num_sec_dev_types;
480 char device_name[33];
485 u16 wps_config_methods;
486 const u8 *wps_pri_dev_type;
487 const u8 *wps_sec_dev_type_list;
488 size_t wps_sec_dev_type_list_len;
489 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
490 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
491 const u8 *manufacturer;
492 size_t manufacturer_len;
493 const u8 *model_name;
494 size_t model_name_len;
495 const u8 *model_number;
496 size_t model_number_len;
497 const u8 *serial_number;
498 size_t serial_number_len;
500 /* DS Parameter Set IE */
508 #define P2P_MAX_GROUP_ENTRIES 50
510 struct p2p_group_info {
511 unsigned int num_clients;
512 struct p2p_client_info {
513 const u8 *p2p_device_addr;
514 const u8 *p2p_interface_addr;
517 const u8 *pri_dev_type;
518 u8 num_sec_dev_types;
519 const u8 *sec_dev_types;
520 const char *dev_name;
522 } client[P2P_MAX_GROUP_ENTRIES];
527 int p2p_random(char *buf, size_t len);
528 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
529 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
531 void p2p_channels_intersect(const struct p2p_channels *a,
532 const struct p2p_channels *b,
533 struct p2p_channels *res);
534 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
538 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
539 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
540 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
541 void p2p_parse_free(struct p2p_message *msg);
542 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
543 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
544 struct p2p_group_info *info);
548 struct p2p_noa_desc {
556 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
557 u8 p2p_group_presence_req(struct p2p_group *group,
558 const u8 *client_interface_addr,
559 const u8 *noa, size_t noa_len);
562 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
563 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
565 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
566 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
567 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
568 struct p2p_device *peer);
569 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
570 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
571 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
572 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
573 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
574 u8 reg_class, u8 channel);
575 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
576 u8 reg_class, u8 channel);
577 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
578 struct p2p_channels *chan);
579 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
581 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
582 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
583 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
584 const u8 *ssid, size_t ssid_len);
585 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
586 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
587 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
588 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
590 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
591 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, u16 pw_id,
595 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
596 struct p2p_device *dev);
597 void p2p_free_sd_queries(struct p2p_data *p2p);
598 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
599 const u8 *data, size_t len, int rx_freq);
600 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
601 const u8 *data, size_t len, int rx_freq);
602 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
603 const u8 *data, size_t len, int rx_freq);
604 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
605 const u8 *data, size_t len, int rx_freq);
606 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
609 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
610 struct p2p_device *dev,
611 const u8 *channel_list, size_t channel_list_len);
612 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
613 const u8 *data, size_t len, int rx_freq);
614 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
615 const u8 *data, size_t len, int rx_freq);
616 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
617 const u8 *data, size_t len);
618 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
621 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
622 const u8 *data, size_t len, int rx_freq);
623 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
624 const u8 *data, size_t len);
625 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
626 int join, int force_freq);
627 void p2p_reset_pending_pd(struct p2p_data *p2p);
629 /* p2p_invitation.c */
630 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
631 const u8 *data, size_t len, int rx_freq);
632 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
633 const u8 *data, size_t len);
634 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
635 const u8 *go_dev_addr);
636 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
637 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
640 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
641 const u8 *data, size_t len, int rx_freq);
642 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
643 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
644 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
645 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
646 const u8 *data, size_t len);
647 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
648 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
649 const u8 *data, size_t len, int rx_freq);
652 void p2p_set_state(struct p2p_data *p2p, int new_state);
653 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
655 void p2p_clear_timeout(struct p2p_data *p2p);
656 void p2p_continue_find(struct p2p_data *p2p);
657 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
659 struct p2p_message *msg);
660 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
661 struct p2p_device *dev, struct p2p_message *msg);
662 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
663 const u8 *ies, size_t ies_len);
664 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
665 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
667 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
669 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
670 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
671 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
672 size_t num_req_dev_type);
673 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
674 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
675 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
676 const u8 *src, const u8 *bssid, const u8 *buf,
677 size_t len, unsigned int wait_time);