2 * P2P - Internal definitions for P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
18 #include "utils/list.h"
21 /* TODO: add removal of expired P2P device entries */
30 * struct p2p_device - P2P Device data (internal to P2P module)
34 struct os_time last_seen;
37 enum p2p_wps_method wps_method;
39 struct p2p_peer_info info;
42 * If the peer was discovered based on an interface address (e.g., GO
43 * from Beacon/Probe Response), the interface address is stored here.
44 * p2p_device_addr must still be set in such a case to the unique
45 * identifier for the P2P Device.
47 u8 interface_addr[ETH_ALEN];
50 * P2P Device Address of the GO in whose group this P2P Device is a
53 u8 member_in_go_dev[ETH_ALEN];
56 * P2P Interface Address of the GO in whose group this P2P Device is a
59 u8 member_in_go_iface[ETH_ALEN];
62 enum p2p_go_state go_state;
64 u8 intended_addr[ETH_ALEN];
67 struct p2p_channels channels;
73 * req_config_methods - Pending provisioning discovery methods
75 u16 req_config_methods;
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)
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
207 * min_disc_int - minDiscoverableInterval
212 * max_disc_int - maxDiscoverableInterval
217 * devices - List of known P2P Device peers
219 struct dl_list devices;
222 * go_neg_peer - Pointer to GO Negotiation peer
224 struct p2p_device *go_neg_peer;
227 * invite_peer - Pointer to Invite peer
229 struct p2p_device *invite_peer;
231 const u8 *invite_go_dev_addr;
232 u8 invite_go_dev_addr_buf[ETH_ALEN];
235 * sd_peer - Pointer to Service Discovery peer
237 struct p2p_device *sd_peer;
240 * sd_query - Pointer to Service Discovery query
242 struct p2p_sd_query *sd_query;
244 /* GO Negotiation data */
247 * intended_addr - Local Intended P2P Interface Address
249 * This address is used during group owner negotiation as the Intended
250 * P2P Interface Address and the group interface will be created with
251 * address as the local address in case of successfully completed
254 u8 intended_addr[ETH_ALEN];
257 * go_intent - Local GO Intent to be used during GO Negotiation
262 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
267 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
272 * ssid_len - ssid length in octets
277 * Regulatory class for own operational channel
282 * op_channel - Own operational channel
287 * channels - Own supported regulatory classes and channels
289 * List of supposerted channels per regulatory class. The regulatory
290 * classes are defined in IEEE Std 802.11-2007 Annex J and the
291 * numbering of the clases depends on the configured country code.
293 struct p2p_channels channels;
295 enum p2p_pending_action_state {
296 P2P_NO_PENDING_ACTION,
297 P2P_PENDING_GO_NEG_REQUEST,
298 P2P_PENDING_GO_NEG_RESPONSE,
299 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
300 P2P_PENDING_GO_NEG_CONFIRM,
303 P2P_PENDING_INVITATION_REQUEST,
304 P2P_PENDING_INVITATION_RESPONSE,
305 P2P_PENDING_DEV_DISC_REQUEST,
306 P2P_PENDING_DEV_DISC_RESPONSE,
307 P2P_PENDING_GO_DISC_REQ
308 } pending_action_state;
310 unsigned int pending_listen_freq;
311 unsigned int pending_listen_sec;
312 unsigned int pending_listen_usec;
320 * sd_queries - Pending service discovery queries
322 struct p2p_sd_query *sd_queries;
325 * srv_update_indic - Service Update Indicator for local services
327 u16 srv_update_indic;
329 struct wpabuf *sd_resp; /* Fragmented SD response */
330 u8 sd_resp_addr[ETH_ALEN];
331 u8 sd_resp_dialog_token;
332 size_t sd_resp_pos; /* Offset in sd_resp */
335 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
336 u16 sd_rx_update_indic;
338 /* P2P Invitation data */
339 enum p2p_invite_role inv_role;
340 u8 inv_bssid[ETH_ALEN];
345 u8 inv_group_bssid[ETH_ALEN];
346 u8 *inv_group_bssid_ptr;
347 u8 inv_go_dev_addr[ETH_ALEN];
352 enum p2p_discovery_type find_type;
353 u8 last_prog_scan_class;
354 u8 last_prog_scan_chan;
355 int p2p_scan_running;
356 enum p2p_after_scan {
357 P2P_AFTER_SCAN_NOTHING,
358 P2P_AFTER_SCAN_LISTEN,
359 P2P_AFTER_SCAN_CONNECT
361 u8 after_scan_peer[ETH_ALEN];
362 struct p2p_pending_action_tx *after_scan_tx;
364 /* Requested device types for find/search */
365 unsigned int num_req_dev_types;
368 struct p2p_group **groups;
371 struct p2p_device *pending_client_disc_go;
372 u8 pending_client_disc_addr[ETH_ALEN];
373 u8 pending_dev_disc_dialog_token;
374 u8 pending_dev_disc_addr[ETH_ALEN];
375 int pending_dev_disc_freq;
376 unsigned int pending_client_disc_freq;
379 unsigned int ext_listen_period;
380 unsigned int ext_listen_interval;
381 unsigned int ext_listen_interval_sec;
382 unsigned int ext_listen_interval_usec;
384 u8 peer_filter[ETH_ALEN];
390 int best_freq_overall;
393 * wps_vendor_ext - WPS Vendor Extensions to add
395 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
399 * struct p2p_message - Parsed P2P message (or P2P IE)
402 struct wpabuf *p2p_attributes;
403 struct wpabuf *wps_attributes;
407 const u8 *capability;
410 const u8 *listen_channel;
411 const u8 *operating_channel;
412 const u8 *channel_list;
414 const u8 *config_timeout;
415 const u8 *intended_addr;
416 const u8 *group_bssid;
417 const u8 *invitation_flags;
419 const u8 *group_info;
420 size_t group_info_len;
427 const u8 *manageability;
432 const u8 *ext_listen_timing;
434 const u8 *minor_reason_code;
436 /* P2P Device Info */
437 const u8 *p2p_device_info;
438 size_t p2p_device_info_len;
439 const u8 *p2p_device_addr;
440 const u8 *pri_dev_type;
441 u8 num_sec_dev_types;
442 char device_name[33];
447 u16 wps_config_methods;
448 const u8 *wps_pri_dev_type;
449 const u8 *wps_sec_dev_type_list;
450 size_t wps_sec_dev_type_list_len;
451 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
452 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
453 const u8 *manufacturer;
454 size_t manufacturer_len;
455 const u8 *model_name;
456 size_t model_name_len;
457 const u8 *model_number;
458 size_t model_number_len;
459 const u8 *serial_number;
460 size_t serial_number_len;
462 /* DS Parameter Set IE */
470 #define P2P_MAX_GROUP_ENTRIES 50
472 struct p2p_group_info {
473 unsigned int num_clients;
474 struct p2p_client_info {
475 const u8 *p2p_device_addr;
476 const u8 *p2p_interface_addr;
479 const u8 *pri_dev_type;
480 u8 num_sec_dev_types;
481 const u8 *sec_dev_types;
482 const char *dev_name;
484 } client[P2P_MAX_GROUP_ENTRIES];
489 int p2p_random(char *buf, size_t len);
490 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
491 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
493 void p2p_channels_intersect(const struct p2p_channels *a,
494 const struct p2p_channels *b,
495 struct p2p_channels *res);
496 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
500 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
501 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
502 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
503 void p2p_parse_free(struct p2p_message *msg);
504 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
505 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
506 struct p2p_group_info *info);
510 struct p2p_noa_desc {
518 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
519 u8 p2p_group_presence_req(struct p2p_group *group,
520 const u8 *client_interface_addr,
521 const u8 *noa, size_t noa_len);
524 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
525 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
527 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
528 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
529 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
530 struct p2p_device *peer);
531 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
532 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
533 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
534 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
535 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
536 u8 reg_class, u8 channel);
537 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
538 u8 reg_class, u8 channel);
539 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
540 struct p2p_channels *chan);
541 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
543 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
544 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
545 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
546 const u8 *ssid, size_t ssid_len);
547 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
548 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
549 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
550 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
552 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
553 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, u16 pw_id,
557 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
558 struct p2p_device *dev);
559 void p2p_free_sd_queries(struct p2p_data *p2p);
560 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
561 const u8 *data, size_t len, int rx_freq);
562 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
563 const u8 *data, size_t len, int rx_freq);
564 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
565 const u8 *data, size_t len, int rx_freq);
566 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
567 const u8 *data, size_t len, int rx_freq);
568 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
571 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
572 struct p2p_device *dev,
573 const u8 *channel_list, size_t channel_list_len);
574 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
575 const u8 *data, size_t len, int rx_freq);
576 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
577 const u8 *data, size_t len, int rx_freq);
578 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
579 const u8 *data, size_t len);
580 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
583 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
584 const u8 *data, size_t len, int rx_freq);
585 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
586 const u8 *data, size_t len);
587 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
590 /* p2p_invitation.c */
591 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
592 const u8 *data, size_t len, int rx_freq);
593 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
594 const u8 *data, size_t len);
595 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
596 const u8 *go_dev_addr);
597 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
598 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
601 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
602 const u8 *data, size_t len, int rx_freq);
603 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
604 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
605 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
606 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
607 const u8 *data, size_t len);
608 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
609 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
610 const u8 *data, size_t len, int rx_freq);
613 void p2p_set_state(struct p2p_data *p2p, int new_state);
614 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
616 void p2p_clear_timeout(struct p2p_data *p2p);
617 void p2p_continue_find(struct p2p_data *p2p);
618 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
620 struct p2p_message *msg);
621 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
622 struct p2p_device *dev, struct p2p_message *msg);
623 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
624 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
626 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
628 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
629 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
630 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
631 size_t num_req_dev_type);
632 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
633 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
634 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
635 const u8 *src, const u8 *bssid, const u8 *buf,
636 size_t len, unsigned int wait_time);