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;
36 enum p2p_wps_method wps_method;
38 struct p2p_peer_info info;
41 * If the peer was discovered based on an interface address (e.g., GO
42 * from Beacon/Probe Response), the interface address is stored here.
43 * p2p_device_addr must still be set in such a case to the unique
44 * identifier for the P2P Device.
46 u8 interface_addr[ETH_ALEN];
49 * P2P Device Address of the GO in whose group this P2P Device is a
52 u8 member_in_go_dev[ETH_ALEN];
55 * P2P Interface Address of the GO in whose group this P2P Device is a
58 u8 member_in_go_iface[ETH_ALEN];
61 enum p2p_go_state go_state;
63 u8 intended_addr[ETH_ALEN];
66 struct p2p_channels channels;
72 * req_config_methods - Pending provisioning discovery methods
74 u16 req_config_methods;
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)
94 int status; /* enum p2p_status_code */
95 unsigned int wait_count;
96 unsigned int connect_reqs;
97 unsigned int invitation_reqs;
99 u16 ext_listen_period;
100 u16 ext_listen_interval;
106 struct p2p_sd_query {
107 struct p2p_sd_query *next;
113 struct p2p_pending_action_tx {
119 unsigned int wait_time;
120 /* Followed by len octets of the frame */
124 * struct p2p_data - P2P module data (internal to P2P module)
128 * cfg - P2P module configuration
130 * This is included in the same memory allocation with the
131 * struct p2p_data and as such, must not be freed separately.
133 struct p2p_config *cfg;
136 * state - The current P2P state
145 * P2P_SEARCH - Search (Device Discovery)
150 * P2P_CONNECT - Trying to start GO Negotiation
155 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
160 * P2P_GO_NEG - In GO Negotiation
165 * P2P_LISTEN_ONLY - Listen only
170 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
172 P2P_WAIT_PEER_CONNECT,
175 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
180 * P2P_SD_DURING_FIND - Service Discovery during find
185 * P2P_PROVISIONING - Provisioning (during group formation)
190 * P2P_PD_DURING_FIND - Provision Discovery during find
195 * P2P_INVITE - Trying to start Invite
200 * P2P_INVITE_LISTEN - Listen during Invite
206 * min_disc_int - minDiscoverableInterval
211 * max_disc_int - maxDiscoverableInterval
216 * devices - List of known P2P Device peers
218 struct dl_list devices;
221 * go_neg_peer - Pointer to GO Negotiation peer
223 struct p2p_device *go_neg_peer;
226 * invite_peer - Pointer to Invite peer
228 struct p2p_device *invite_peer;
230 const u8 *invite_go_dev_addr;
231 u8 invite_go_dev_addr_buf[ETH_ALEN];
234 * sd_peer - Pointer to Service Discovery peer
236 struct p2p_device *sd_peer;
239 * sd_query - Pointer to Service Discovery query
241 struct p2p_sd_query *sd_query;
243 /* GO Negotiation data */
246 * intended_addr - Local Intended P2P Interface Address
248 * This address is used during group owner negotiation as the Intended
249 * P2P Interface Address and the group interface will be created with
250 * address as the local address in case of successfully completed
253 u8 intended_addr[ETH_ALEN];
256 * go_intent - Local GO Intent to be used during GO Negotiation
261 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
266 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
271 * ssid_len - ssid length in octets
276 * Regulatory class for own operational channel
281 * op_channel - Own operational channel
286 * channels - Own supported regulatory classes and channels
288 * List of supposerted channels per regulatory class. The regulatory
289 * classes are defined in IEEE Std 802.11-2007 Annex J and the
290 * numbering of the clases depends on the configured country code.
292 struct p2p_channels channels;
294 enum p2p_pending_action_state {
295 P2P_NO_PENDING_ACTION,
296 P2P_PENDING_GO_NEG_REQUEST,
297 P2P_PENDING_GO_NEG_RESPONSE,
298 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
299 P2P_PENDING_GO_NEG_CONFIRM,
302 P2P_PENDING_INVITATION_REQUEST,
303 P2P_PENDING_INVITATION_RESPONSE,
304 P2P_PENDING_DEV_DISC_REQUEST,
305 P2P_PENDING_DEV_DISC_RESPONSE,
306 P2P_PENDING_GO_DISC_REQ
307 } pending_action_state;
309 unsigned int pending_listen_freq;
310 unsigned int pending_listen_sec;
311 unsigned int pending_listen_usec;
319 * sd_queries - Pending service discovery queries
321 struct p2p_sd_query *sd_queries;
324 * srv_update_indic - Service Update Indicator for local services
326 u16 srv_update_indic;
328 struct wpabuf *sd_resp; /* Fragmented SD response */
329 u8 sd_resp_addr[ETH_ALEN];
330 u8 sd_resp_dialog_token;
331 size_t sd_resp_pos; /* Offset in sd_resp */
334 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
335 u16 sd_rx_update_indic;
337 /* P2P Invitation data */
338 enum p2p_invite_role inv_role;
339 u8 inv_bssid[ETH_ALEN];
344 u8 inv_group_bssid[ETH_ALEN];
345 u8 *inv_group_bssid_ptr;
346 u8 inv_go_dev_addr[ETH_ALEN];
351 enum p2p_discovery_type find_type;
352 u8 last_prog_scan_class;
353 u8 last_prog_scan_chan;
354 int p2p_scan_running;
355 enum p2p_after_scan {
356 P2P_AFTER_SCAN_NOTHING,
357 P2P_AFTER_SCAN_LISTEN,
358 P2P_AFTER_SCAN_CONNECT
360 u8 after_scan_peer[ETH_ALEN];
361 struct p2p_pending_action_tx *after_scan_tx;
363 /* Requested device types for find/search */
364 unsigned int num_req_dev_types;
367 struct p2p_group **groups;
370 struct p2p_device *pending_client_disc_go;
371 u8 pending_client_disc_addr[ETH_ALEN];
372 u8 pending_dev_disc_dialog_token;
373 u8 pending_dev_disc_addr[ETH_ALEN];
374 int pending_dev_disc_freq;
375 unsigned int pending_client_disc_freq;
378 unsigned int ext_listen_period;
379 unsigned int ext_listen_interval;
380 unsigned int ext_listen_interval_sec;
381 unsigned int ext_listen_interval_usec;
383 u8 peer_filter[ETH_ALEN];
389 int best_freq_overall;
392 * wps_vendor_ext - WPS Vendor Extensions to add
394 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
397 * user_initiated_pd - Whether a PD request is user initiated or not.
399 u8 user_initiated_pd;
402 * Keep track of which peer a given PD request was sent to.
403 * Used to raise a timeout alert in case there is no response.
405 u8 pending_pd_devaddr[ETH_ALEN];
408 * Retry counter for provision discovery requests when issued
415 * struct p2p_message - Parsed P2P message (or P2P IE)
418 struct wpabuf *p2p_attributes;
419 struct wpabuf *wps_attributes;
423 const u8 *capability;
426 const u8 *listen_channel;
427 const u8 *operating_channel;
428 const u8 *channel_list;
430 const u8 *config_timeout;
431 const u8 *intended_addr;
432 const u8 *group_bssid;
433 const u8 *invitation_flags;
435 const u8 *group_info;
436 size_t group_info_len;
443 const u8 *manageability;
448 const u8 *ext_listen_timing;
450 const u8 *minor_reason_code;
452 /* P2P Device Info */
453 const u8 *p2p_device_info;
454 size_t p2p_device_info_len;
455 const u8 *p2p_device_addr;
456 const u8 *pri_dev_type;
457 u8 num_sec_dev_types;
458 char device_name[33];
463 u16 wps_config_methods;
464 const u8 *wps_pri_dev_type;
465 const u8 *wps_sec_dev_type_list;
466 size_t wps_sec_dev_type_list_len;
467 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
468 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
469 const u8 *manufacturer;
470 size_t manufacturer_len;
471 const u8 *model_name;
472 size_t model_name_len;
473 const u8 *model_number;
474 size_t model_number_len;
475 const u8 *serial_number;
476 size_t serial_number_len;
478 /* DS Parameter Set IE */
486 #define P2P_MAX_GROUP_ENTRIES 50
488 struct p2p_group_info {
489 unsigned int num_clients;
490 struct p2p_client_info {
491 const u8 *p2p_device_addr;
492 const u8 *p2p_interface_addr;
495 const u8 *pri_dev_type;
496 u8 num_sec_dev_types;
497 const u8 *sec_dev_types;
498 const char *dev_name;
500 } client[P2P_MAX_GROUP_ENTRIES];
505 int p2p_random(char *buf, size_t len);
506 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
507 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
509 void p2p_channels_intersect(const struct p2p_channels *a,
510 const struct p2p_channels *b,
511 struct p2p_channels *res);
512 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
516 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
517 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
518 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
519 void p2p_parse_free(struct p2p_message *msg);
520 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
521 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
522 struct p2p_group_info *info);
526 struct p2p_noa_desc {
534 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
536 #ifdef ANDROID_BRCM_P2P_PATCH
537 void p2p_get_group_noa(struct p2p_group *group, u8 *noa, size_t* noa_len);
540 u8 p2p_group_presence_req(struct p2p_group *group,
541 const u8 *client_interface_addr,
542 const u8 *noa, size_t noa_len);
545 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
546 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
548 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
549 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
550 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
551 struct p2p_device *peer);
552 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
553 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
554 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
555 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
556 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
557 u8 reg_class, u8 channel);
558 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
559 u8 reg_class, u8 channel);
560 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
561 struct p2p_channels *chan);
562 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
564 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
565 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
566 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
567 const u8 *ssid, size_t ssid_len);
568 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
569 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
570 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
571 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
573 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
574 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, u16 pw_id,
578 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
579 struct p2p_device *dev);
580 void p2p_free_sd_queries(struct p2p_data *p2p);
581 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
582 const u8 *data, size_t len, int rx_freq);
583 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
584 const u8 *data, size_t len, int rx_freq);
585 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
586 const u8 *data, size_t len, int rx_freq);
587 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
588 const u8 *data, size_t len, int rx_freq);
589 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
592 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
593 struct p2p_device *dev,
594 const u8 *channel_list, size_t channel_list_len);
595 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
596 const u8 *data, size_t len, int rx_freq);
597 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
598 const u8 *data, size_t len, int rx_freq);
599 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
600 const u8 *data, size_t len);
601 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
604 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
605 const u8 *data, size_t len, int rx_freq);
606 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
607 const u8 *data, size_t len);
608 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
610 void p2p_reset_pending_pd(struct p2p_data *p2p);
612 /* p2p_invitation.c */
613 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
614 const u8 *data, size_t len, int rx_freq);
615 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
616 const u8 *data, size_t len);
617 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
618 const u8 *go_dev_addr);
619 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
620 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
623 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
624 const u8 *data, size_t len, int rx_freq);
625 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
626 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
627 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
628 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
629 const u8 *data, size_t len);
630 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
631 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
632 const u8 *data, size_t len, int rx_freq);
635 void p2p_set_state(struct p2p_data *p2p, int new_state);
636 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
638 void p2p_clear_timeout(struct p2p_data *p2p);
639 void p2p_continue_find(struct p2p_data *p2p);
640 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
642 struct p2p_message *msg);
643 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
644 struct p2p_device *dev, struct p2p_message *msg);
645 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
646 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
648 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
650 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
651 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
652 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
653 size_t num_req_dev_type);
654 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
655 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
656 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
657 const u8 *src, const u8 *bssid, const u8 *buf,
658 size_t len, unsigned int wait_time);