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 u8 p2p_device_addr[ETH_ALEN]; /* P2P Device Address of the peer */
47 * If the peer was discovered based on an interface address (e.g., GO
48 * from Beacon/Probe Response), the interface address is stored here.
49 * p2p_device_addr must still be set in such a case to the unique
50 * identifier for the P2P Device.
52 u8 interface_addr[ETH_ALEN];
55 * P2P Device Address of the GO in whose group this P2P Device is a
58 u8 member_in_go_dev[ETH_ALEN];
61 * P2P Interface Address of the GO in whose group this P2P Device is a
64 u8 member_in_go_iface[ETH_ALEN];
67 enum p2p_go_state go_state;
69 u8 intended_addr[ETH_ALEN];
72 struct p2p_channels channels;
78 * req_config_methods - Pending provisioning discovery methods
80 u16 req_config_methods;
82 #define P2P_DEV_PROBE_REQ_ONLY BIT(0)
83 #define P2P_DEV_REPORTED BIT(1)
84 #define P2P_DEV_NOT_YET_READY BIT(2)
85 #define P2P_DEV_SD_INFO BIT(3)
86 #define P2P_DEV_SD_SCHEDULE BIT(4)
87 #define P2P_DEV_PD_PEER_DISPLAY BIT(5)
88 #define P2P_DEV_PD_PEER_KEYPAD BIT(6)
89 #define P2P_DEV_USER_REJECTED BIT(7)
90 #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
91 #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
92 #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
93 #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
94 #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
95 #define P2P_DEV_FORCE_FREQ BIT(13)
98 int status; /* enum p2p_status_code */
99 unsigned int wait_count;
100 unsigned int invitation_reqs;
102 u16 ext_listen_period;
103 u16 ext_listen_interval;
109 struct p2p_sd_query {
110 struct p2p_sd_query *next;
117 * struct p2p_data - P2P module data (internal to P2P module)
121 * cfg - P2P module configuration
123 * This is included in the same memory allocation with the
124 * struct p2p_data and as such, must not be freed separately.
126 struct p2p_config *cfg;
129 * state - The current P2P state
138 * P2P_SEARCH - Search (Device Discovery)
143 * P2P_CONNECT - Trying to start GO Negotiation
148 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
153 * P2P_GO_NEG - In GO Negotiation
158 * P2P_LISTEN_ONLY - Listen only
163 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
165 P2P_WAIT_PEER_CONNECT,
168 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
173 * P2P_SD_DURING_FIND - Service Discovery during find
178 * P2P_PROVISIONING - Provisioning (during group formation)
183 * P2P_PD_DURING_FIND - Provision Discovery during find
188 * P2P_INVITE - Trying to start Invite
193 * P2P_INVITE_LISTEN - Listen during Invite
199 * min_disc_int - minDiscoverableInterval
204 * max_disc_int - maxDiscoverableInterval
209 * devices - List of known P2P Device peers
211 struct dl_list devices;
214 * go_neg_peer - Pointer to GO Negotiation peer
216 struct p2p_device *go_neg_peer;
219 * invite_peer - Pointer to Invite peer
221 struct p2p_device *invite_peer;
223 const u8 *invite_go_dev_addr;
224 u8 invite_go_dev_addr_buf[ETH_ALEN];
227 * sd_peer - Pointer to Service Discovery peer
229 struct p2p_device *sd_peer;
232 * sd_query - Pointer to Service Discovery query
234 struct p2p_sd_query *sd_query;
236 /* GO Negotiation data */
239 * intended_addr - Local Intended P2P Interface Address
241 * This address is used during group owner negotiation as the Intended
242 * P2P Interface Address and the group interface will be created with
243 * address as the local address in case of successfully completed
246 u8 intended_addr[ETH_ALEN];
249 * go_intent - Local GO Intent to be used during GO Negotiation
254 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
259 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
264 * ssid_len - ssid length in octets
269 * Regulatory class for own operational channel
274 * op_channel - Own operational channel
279 * channels - Own supported regulatory classes and channels
281 * List of supposerted channels per regulatory class. The regulatory
282 * classes are defined in IEEE Std 802.11-2007 Annex J and the
283 * numbering of the clases depends on the configured country code.
285 struct p2p_channels channels;
287 enum p2p_pending_action_state {
288 P2P_NO_PENDING_ACTION,
289 P2P_PENDING_GO_NEG_REQUEST,
290 P2P_PENDING_GO_NEG_RESPONSE,
291 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
292 P2P_PENDING_GO_NEG_CONFIRM,
295 P2P_PENDING_INVITATION_REQUEST,
296 P2P_PENDING_INVITATION_RESPONSE,
297 P2P_PENDING_DEV_DISC_REQUEST,
298 P2P_PENDING_DEV_DISC_RESPONSE,
299 P2P_PENDING_GO_DISC_REQ
300 } pending_action_state;
302 unsigned int pending_listen_freq;
303 unsigned int pending_listen_sec;
304 unsigned int pending_listen_usec;
312 * sd_queries - Pending service discovery queries
314 struct p2p_sd_query *sd_queries;
317 * srv_update_indic - Service Update Indicator for local services
319 u16 srv_update_indic;
321 struct wpabuf *sd_resp; /* Fragmented SD response */
322 u8 sd_resp_addr[ETH_ALEN];
323 u8 sd_resp_dialog_token;
324 size_t sd_resp_pos; /* Offset in sd_resp */
327 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
328 u16 sd_rx_update_indic;
330 /* P2P Invitation data */
331 enum p2p_invite_role inv_role;
332 u8 inv_bssid[ETH_ALEN];
337 u8 inv_group_bssid[ETH_ALEN];
338 u8 *inv_group_bssid_ptr;
339 u8 inv_go_dev_addr[ETH_ALEN];
344 enum p2p_discovery_type find_type;
345 u8 last_prog_scan_class;
346 u8 last_prog_scan_chan;
347 int p2p_scan_running;
348 enum p2p_after_scan {
349 P2P_AFTER_SCAN_NOTHING,
350 P2P_AFTER_SCAN_LISTEN,
351 P2P_AFTER_SCAN_CONNECT
353 u8 after_scan_peer[ETH_ALEN];
355 struct p2p_group **groups;
358 struct p2p_device *pending_client_disc_go;
359 u8 pending_client_disc_addr[ETH_ALEN];
360 u8 pending_dev_disc_dialog_token;
361 u8 pending_dev_disc_addr[ETH_ALEN];
362 int pending_dev_disc_freq;
363 unsigned int pending_client_disc_freq;
366 unsigned int ext_listen_period;
367 unsigned int ext_listen_interval;
368 unsigned int ext_listen_interval_sec;
369 unsigned int ext_listen_interval_usec;
371 u8 peer_filter[ETH_ALEN];
377 * struct p2p_message - Parsed P2P message (or P2P IE)
380 struct wpabuf *p2p_attributes;
381 struct wpabuf *wps_attributes;
385 const u8 *capability;
388 const u8 *listen_channel;
389 const u8 *operating_channel;
390 const u8 *channel_list;
392 const u8 *config_timeout;
393 const u8 *intended_addr;
394 const u8 *group_bssid;
395 const u8 *invitation_flags;
397 const u8 *group_info;
398 size_t group_info_len;
405 const u8 *manageability;
410 const u8 *ext_listen_timing;
412 const u8 *minor_reason_code;
414 /* P2P Device Info */
415 const u8 *p2p_device_info;
416 size_t p2p_device_info_len;
417 const u8 *p2p_device_addr;
418 const u8 *pri_dev_type;
419 u8 num_sec_dev_types;
420 char device_name[33];
425 u16 wps_config_methods;
426 const u8 *wps_pri_dev_type;
428 /* DS Parameter Set IE */
436 #define P2P_MAX_GROUP_ENTRIES 50
438 struct p2p_group_info {
439 unsigned int num_clients;
440 struct p2p_client_info {
441 const u8 *p2p_device_addr;
442 const u8 *p2p_interface_addr;
445 const u8 *pri_dev_type;
446 u8 num_sec_dev_types;
447 const u8 *sec_dev_types;
448 const char *dev_name;
450 } client[P2P_MAX_GROUP_ENTRIES];
455 int p2p_random(char *buf, size_t len);
456 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
457 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
459 void p2p_channels_intersect(const struct p2p_channels *a,
460 const struct p2p_channels *b,
461 struct p2p_channels *res);
462 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
466 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
467 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
468 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
469 void p2p_parse_free(struct p2p_message *msg);
470 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
471 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
472 struct p2p_group_info *info);
476 struct p2p_noa_desc {
484 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
485 u8 p2p_group_presence_req(struct p2p_group *group,
486 const u8 *client_interface_addr,
487 const u8 *noa, size_t noa_len);
490 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
491 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
493 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
494 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
495 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
496 struct p2p_device *peer);
497 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
498 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
499 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
500 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
501 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
502 u8 reg_class, u8 channel);
503 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
504 u8 reg_class, u8 channel);
505 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
506 struct p2p_channels *chan);
507 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
509 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
510 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
511 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
512 const u8 *ssid, size_t ssid_len);
513 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
514 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
515 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
516 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
518 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
519 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, u16 pw_id,
523 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
524 struct p2p_device *dev);
525 void p2p_free_sd_queries(struct p2p_data *p2p);
526 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
527 const u8 *data, size_t len, int rx_freq);
528 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
529 const u8 *data, size_t len, int rx_freq);
530 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
531 const u8 *data, size_t len, int rx_freq);
532 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
533 const u8 *data, size_t len, int rx_freq);
534 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
537 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
538 struct p2p_device *dev,
539 const u8 *channel_list, size_t channel_list_len);
540 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
541 const u8 *data, size_t len, int rx_freq);
542 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
543 const u8 *data, size_t len, int rx_freq);
544 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
545 const u8 *data, size_t len);
546 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
549 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
550 const u8 *data, size_t len, int rx_freq);
551 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
552 const u8 *data, size_t len);
553 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
556 /* p2p_invitation.c */
557 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
558 const u8 *data, size_t len, int rx_freq);
559 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
560 const u8 *data, size_t len);
561 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
562 const u8 *go_dev_addr);
563 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
564 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
567 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
568 const u8 *data, size_t len, int rx_freq);
569 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
570 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
571 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
572 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
573 const u8 *data, size_t len);
574 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
575 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
576 const u8 *data, size_t len, int rx_freq);
579 void p2p_set_state(struct p2p_data *p2p, int new_state);
580 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
582 void p2p_clear_timeout(struct p2p_data *p2p);
583 void p2p_continue_find(struct p2p_data *p2p);
584 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
586 struct p2p_message *msg);
587 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
588 struct p2p_device *dev, struct p2p_message *msg);
589 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
590 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
592 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
594 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
595 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
596 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
597 size_t num_req_dev_type);
598 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
599 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);