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;
106 struct p2p_sd_query {
107 struct p2p_sd_query *next;
114 * struct p2p_data - P2P module data (internal to P2P module)
118 * cfg - P2P module configuration
120 * This is included in the same memory allocation with the
121 * struct p2p_data and as such, must not be freed separately.
123 struct p2p_config *cfg;
126 * state - The current P2P state
135 * P2P_SEARCH - Search (Device Discovery)
140 * P2P_CONNECT - Trying to start GO Negotiation
145 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
150 * P2P_GO_NEG - In GO Negotiation
155 * P2P_LISTEN_ONLY - Listen only
160 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
162 P2P_WAIT_PEER_CONNECT,
165 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
170 * P2P_SD_DURING_FIND - Service Discovery during find
175 * P2P_PROVISIONING - Provisioning (during group formation)
180 * P2P_PD_DURING_FIND - Provision Discovery during find
185 * P2P_INVITE - Trying to start Invite
190 * P2P_INVITE_LISTEN - Listen during Invite
196 * min_disc_int - minDiscoverableInterval
201 * max_disc_int - maxDiscoverableInterval
206 * devices - List of known P2P Device peers
208 struct dl_list devices;
211 * go_neg_peer - Pointer to GO Negotiation peer
213 struct p2p_device *go_neg_peer;
216 * invite_peer - Pointer to Invite peer
218 struct p2p_device *invite_peer;
220 const u8 *invite_go_dev_addr;
221 u8 invite_go_dev_addr_buf[ETH_ALEN];
224 * sd_peer - Pointer to Service Discovery peer
226 struct p2p_device *sd_peer;
229 * sd_query - Pointer to Service Discovery query
231 struct p2p_sd_query *sd_query;
233 /* GO Negotiation data */
236 * intended_addr - Local Intended P2P Interface Address
238 * This address is used during group owner negotiation as the Intended
239 * P2P Interface Address and the group interface will be created with
240 * address as the local address in case of successfully completed
243 u8 intended_addr[ETH_ALEN];
246 * go_intent - Local GO Intent to be used during GO Negotiation
251 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
256 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
261 * ssid_len - ssid length in octets
266 * Regulatory class for own operational channel
271 * op_channel - Own operational channel
276 * channels - Own supported regulatory classes and channels
278 * List of supposerted channels per regulatory class. The regulatory
279 * classes are defined in IEEE Std 802.11-2007 Annex J and the
280 * numbering of the clases depends on the configured country code.
282 struct p2p_channels channels;
284 enum p2p_pending_action_state {
285 P2P_NO_PENDING_ACTION,
286 P2P_PENDING_GO_NEG_REQUEST,
287 P2P_PENDING_GO_NEG_RESPONSE,
288 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
289 P2P_PENDING_GO_NEG_CONFIRM,
292 P2P_PENDING_INVITATION_REQUEST,
293 P2P_PENDING_INVITATION_RESPONSE,
294 P2P_PENDING_DEV_DISC_REQUEST,
295 P2P_PENDING_DEV_DISC_RESPONSE,
296 P2P_PENDING_GO_DISC_REQ
297 } pending_action_state;
299 unsigned int pending_listen_freq;
300 unsigned int pending_listen_sec;
301 unsigned int pending_listen_usec;
309 * sd_queries - Pending service discovery queries
311 struct p2p_sd_query *sd_queries;
314 * srv_update_indic - Service Update Indicator for local services
316 u16 srv_update_indic;
318 struct wpabuf *sd_resp; /* Fragmented SD response */
319 u8 sd_resp_addr[ETH_ALEN];
320 u8 sd_resp_dialog_token;
321 size_t sd_resp_pos; /* Offset in sd_resp */
324 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
326 /* P2P Invitation data */
327 enum p2p_invite_role inv_role;
328 u8 inv_bssid[ETH_ALEN];
333 u8 inv_group_bssid[ETH_ALEN];
334 u8 *inv_group_bssid_ptr;
335 u8 inv_go_dev_addr[ETH_ALEN];
340 enum p2p_discovery_type find_type;
341 u8 last_prog_scan_class;
342 u8 last_prog_scan_chan;
343 int p2p_scan_running;
344 enum p2p_after_scan {
345 P2P_AFTER_SCAN_NOTHING,
346 P2P_AFTER_SCAN_LISTEN,
347 P2P_AFTER_SCAN_CONNECT
349 u8 after_scan_peer[ETH_ALEN];
351 struct p2p_group **groups;
354 struct p2p_device *pending_client_disc_go;
355 u8 pending_client_disc_addr[ETH_ALEN];
356 u8 pending_dev_disc_dialog_token;
357 u8 pending_dev_disc_addr[ETH_ALEN];
358 int pending_dev_disc_freq;
359 unsigned int pending_client_disc_freq;
362 unsigned int ext_listen_period;
363 unsigned int ext_listen_interval;
364 unsigned int ext_listen_interval_sec;
365 unsigned int ext_listen_interval_usec;
367 u8 peer_filter[ETH_ALEN];
373 * struct p2p_message - Parsed P2P message (or P2P IE)
376 struct wpabuf *p2p_attributes;
377 struct wpabuf *wps_attributes;
381 const u8 *capability;
384 const u8 *listen_channel;
385 const u8 *operating_channel;
386 const u8 *channel_list;
388 const u8 *config_timeout;
389 const u8 *intended_addr;
390 const u8 *group_bssid;
391 const u8 *invitation_flags;
393 const u8 *group_info;
394 size_t group_info_len;
401 const u8 *manageability;
406 const u8 *ext_listen_timing;
408 const u8 *minor_reason_code;
410 /* P2P Device Info */
411 const u8 *p2p_device_info;
412 size_t p2p_device_info_len;
413 const u8 *p2p_device_addr;
414 const u8 *pri_dev_type;
415 u8 num_sec_dev_types;
416 char device_name[33];
421 u16 wps_config_methods;
422 const u8 *wps_pri_dev_type;
424 /* DS Parameter Set IE */
432 #define P2P_MAX_GROUP_ENTRIES 50
434 struct p2p_group_info {
435 unsigned int num_clients;
436 struct p2p_client_info {
437 const u8 *p2p_device_addr;
438 const u8 *p2p_interface_addr;
441 const u8 *pri_dev_type;
442 u8 num_sec_dev_types;
443 const u8 *sec_dev_types;
444 const char *dev_name;
446 } client[P2P_MAX_GROUP_ENTRIES];
451 int p2p_random(char *buf, size_t len);
452 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
453 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
455 void p2p_channels_intersect(const struct p2p_channels *a,
456 const struct p2p_channels *b,
457 struct p2p_channels *res);
458 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
462 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
463 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
464 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
465 void p2p_parse_free(struct p2p_message *msg);
466 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
467 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
468 struct p2p_group_info *info);
472 struct p2p_noa_desc {
480 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
481 u8 p2p_group_presence_req(struct p2p_group *group,
482 const u8 *client_interface_addr,
483 const u8 *noa, size_t noa_len);
486 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
487 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
489 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
490 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
491 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
492 struct p2p_device *peer);
493 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
494 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
495 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
496 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
497 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
498 u8 reg_class, u8 channel);
499 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
500 u8 reg_class, u8 channel);
501 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
502 struct p2p_channels *chan);
503 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
505 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
506 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
507 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
508 const u8 *ssid, size_t ssid_len);
509 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
510 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
511 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
512 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
514 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
515 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, u16 pw_id,
519 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
520 struct p2p_device *dev);
521 void p2p_free_sd_queries(struct p2p_data *p2p);
522 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
523 const u8 *data, size_t len, int rx_freq);
524 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
525 const u8 *data, size_t len, int rx_freq);
526 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
527 const u8 *data, size_t len, int rx_freq);
528 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
529 const u8 *data, size_t len, int rx_freq);
530 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
533 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
534 struct p2p_device *dev,
535 const u8 *channel_list, size_t channel_list_len);
536 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
537 const u8 *data, size_t len, int rx_freq);
538 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
539 const u8 *data, size_t len, int rx_freq);
540 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
541 const u8 *data, size_t len);
542 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
545 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
546 const u8 *data, size_t len, int rx_freq);
547 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
548 const u8 *data, size_t len);
549 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
552 /* p2p_invitation.c */
553 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
554 const u8 *data, size_t len, int rx_freq);
555 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
556 const u8 *data, size_t len);
557 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
558 const u8 *go_dev_addr);
559 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
560 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
563 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
564 const u8 *data, size_t len, int rx_freq);
565 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
566 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
567 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
568 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
569 const u8 *data, size_t len);
570 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
571 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
572 const u8 *data, size_t len, int rx_freq);
575 void p2p_set_state(struct p2p_data *p2p, int new_state);
576 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
578 void p2p_clear_timeout(struct p2p_data *p2p);
579 void p2p_continue_find(struct p2p_data *p2p);
580 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
582 struct p2p_message *msg);
583 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
584 struct p2p_device *dev, struct p2p_message *msg);
585 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
586 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
588 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
590 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
591 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
592 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
593 size_t num_req_dev_type);
594 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
595 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);