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)
93 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
96 int status; /* enum p2p_status_code */
97 unsigned int wait_count;
98 unsigned int connect_reqs;
99 unsigned int invitation_reqs;
101 u16 ext_listen_period;
102 u16 ext_listen_interval;
108 struct p2p_sd_query {
109 struct p2p_sd_query *next;
115 struct p2p_pending_action_tx {
121 unsigned int wait_time;
122 /* Followed by len octets of the frame */
126 * struct p2p_data - P2P module data (internal to P2P module)
130 * cfg - P2P module configuration
132 * This is included in the same memory allocation with the
133 * struct p2p_data and as such, must not be freed separately.
135 struct p2p_config *cfg;
138 * state - The current P2P state
147 * P2P_SEARCH - Search (Device Discovery)
152 * P2P_CONNECT - Trying to start GO Negotiation
157 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
162 * P2P_GO_NEG - In GO Negotiation
167 * P2P_LISTEN_ONLY - Listen only
172 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
174 P2P_WAIT_PEER_CONNECT,
177 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
182 * P2P_SD_DURING_FIND - Service Discovery during find
187 * P2P_PROVISIONING - Provisioning (during group formation)
192 * P2P_PD_DURING_FIND - Provision Discovery during find
197 * P2P_INVITE - Trying to start Invite
202 * P2P_INVITE_LISTEN - Listen during Invite
207 * P2P_SEARCH_WHEN_READY - Waiting to start Search
209 P2P_SEARCH_WHEN_READY,
213 * min_disc_int - minDiscoverableInterval
218 * max_disc_int - maxDiscoverableInterval
223 * devices - List of known P2P Device peers
225 struct dl_list devices;
229 * sd_dev_list - device pointer to be serviced next
230 * for service discovery
232 struct dl_list *sd_dev_list;
236 * go_neg_peer - Pointer to GO Negotiation peer
238 struct p2p_device *go_neg_peer;
241 * invite_peer - Pointer to Invite peer
243 struct p2p_device *invite_peer;
245 const u8 *invite_go_dev_addr;
246 u8 invite_go_dev_addr_buf[ETH_ALEN];
249 * sd_peer - Pointer to Service Discovery peer
251 struct p2p_device *sd_peer;
254 * sd_query - Pointer to Service Discovery query
256 struct p2p_sd_query *sd_query;
258 /* GO Negotiation data */
261 * intended_addr - Local Intended P2P Interface Address
263 * This address is used during group owner negotiation as the Intended
264 * P2P Interface Address and the group interface will be created with
265 * address as the local address in case of successfully completed
268 u8 intended_addr[ETH_ALEN];
271 * go_intent - Local GO Intent to be used during GO Negotiation
276 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
281 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
286 * ssid_len - ssid length in octets
291 * ssid_set - Whether SSID is already set for GO Negotiation
296 * Regulatory class for own operational channel
301 * op_channel - Own operational channel
306 * channels - Own supported regulatory classes and channels
308 * List of supposerted channels per regulatory class. The regulatory
309 * classes are defined in IEEE Std 802.11-2007 Annex J and the
310 * numbering of the clases depends on the configured country code.
312 struct p2p_channels channels;
314 enum p2p_pending_action_state {
315 P2P_NO_PENDING_ACTION,
316 P2P_PENDING_GO_NEG_REQUEST,
317 P2P_PENDING_GO_NEG_RESPONSE,
318 P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
319 P2P_PENDING_GO_NEG_CONFIRM,
322 P2P_PENDING_INVITATION_REQUEST,
323 P2P_PENDING_INVITATION_RESPONSE,
324 P2P_PENDING_DEV_DISC_REQUEST,
325 P2P_PENDING_DEV_DISC_RESPONSE,
326 P2P_PENDING_GO_DISC_REQ
327 } pending_action_state;
329 unsigned int pending_listen_freq;
330 unsigned int pending_listen_sec;
331 unsigned int pending_listen_usec;
339 * sd_queries - Pending service discovery queries
341 struct p2p_sd_query *sd_queries;
344 * srv_update_indic - Service Update Indicator for local services
346 u16 srv_update_indic;
349 * srv_count - Registered services count
353 struct wpabuf *sd_resp; /* Fragmented SD response */
354 u8 sd_resp_addr[ETH_ALEN];
355 u8 sd_resp_dialog_token;
356 size_t sd_resp_pos; /* Offset in sd_resp */
359 struct wpabuf *sd_rx_resp; /* Reassembled SD response */
360 u16 sd_rx_update_indic;
362 /* P2P Invitation data */
363 enum p2p_invite_role inv_role;
364 u8 inv_bssid[ETH_ALEN];
369 u8 inv_group_bssid[ETH_ALEN];
370 u8 *inv_group_bssid_ptr;
371 u8 inv_go_dev_addr[ETH_ALEN];
376 enum p2p_discovery_type find_type;
377 unsigned int last_p2p_find_timeout;
378 u8 last_prog_scan_class;
379 u8 last_prog_scan_chan;
380 int p2p_scan_running;
381 enum p2p_after_scan {
382 P2P_AFTER_SCAN_NOTHING,
383 P2P_AFTER_SCAN_LISTEN,
384 P2P_AFTER_SCAN_CONNECT
386 u8 after_scan_peer[ETH_ALEN];
387 struct p2p_pending_action_tx *after_scan_tx;
389 /* Requested device types for find/search */
390 unsigned int num_req_dev_types;
393 u8 find_dev_id_buf[ETH_ALEN];
395 struct p2p_group **groups;
398 struct p2p_device *pending_client_disc_go;
399 u8 pending_client_disc_addr[ETH_ALEN];
400 u8 pending_dev_disc_dialog_token;
401 u8 pending_dev_disc_addr[ETH_ALEN];
402 int pending_dev_disc_freq;
403 unsigned int pending_client_disc_freq;
406 unsigned int ext_listen_period;
407 unsigned int ext_listen_interval;
408 unsigned int ext_listen_interval_sec;
409 unsigned int ext_listen_interval_usec;
411 u8 peer_filter[ETH_ALEN];
417 int best_freq_overall;
420 * wps_vendor_ext - WPS Vendor Extensions to add
422 struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
425 * user_initiated_pd - Whether a PD request is user initiated or not.
427 u8 user_initiated_pd;
430 * Keep track of which peer a given PD request was sent to.
431 * Used to raise a timeout alert in case there is no response.
433 u8 pending_pd_devaddr[ETH_ALEN];
436 * Retry counter for provision discovery requests when issued
443 * struct p2p_message - Parsed P2P message (or P2P IE)
446 struct wpabuf *p2p_attributes;
447 struct wpabuf *wps_attributes;
451 const u8 *capability;
454 const u8 *listen_channel;
455 const u8 *operating_channel;
456 const u8 *channel_list;
458 const u8 *config_timeout;
459 const u8 *intended_addr;
460 const u8 *group_bssid;
461 const u8 *invitation_flags;
463 const u8 *group_info;
464 size_t group_info_len;
471 const u8 *manageability;
476 const u8 *ext_listen_timing;
478 const u8 *minor_reason_code;
480 /* P2P Device Info */
481 const u8 *p2p_device_info;
482 size_t p2p_device_info_len;
483 const u8 *p2p_device_addr;
484 const u8 *pri_dev_type;
485 u8 num_sec_dev_types;
486 char device_name[33];
491 u16 wps_config_methods;
492 const u8 *wps_pri_dev_type;
493 const u8 *wps_sec_dev_type_list;
494 size_t wps_sec_dev_type_list_len;
495 const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
496 size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
497 const u8 *manufacturer;
498 size_t manufacturer_len;
499 const u8 *model_name;
500 size_t model_name_len;
501 const u8 *model_number;
502 size_t model_number_len;
503 const u8 *serial_number;
504 size_t serial_number_len;
506 /* DS Parameter Set IE */
514 #define P2P_MAX_GROUP_ENTRIES 50
516 struct p2p_group_info {
517 unsigned int num_clients;
518 struct p2p_client_info {
519 const u8 *p2p_device_addr;
520 const u8 *p2p_interface_addr;
523 const u8 *pri_dev_type;
524 u8 num_sec_dev_types;
525 const u8 *sec_dev_types;
526 const char *dev_name;
528 } client[P2P_MAX_GROUP_ENTRIES];
533 int p2p_random(char *buf, size_t len);
534 int p2p_channel_to_freq(const char *country, int reg_class, int channel);
535 int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
537 void p2p_channels_intersect(const struct p2p_channels *a,
538 const struct p2p_channels *b,
539 struct p2p_channels *res);
540 int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
544 int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
545 int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
546 int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
547 void p2p_parse_free(struct p2p_message *msg);
548 int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
549 int p2p_group_info_parse(const u8 *gi, size_t gi_len,
550 struct p2p_group_info *info);
554 struct p2p_noa_desc {
562 const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
563 u8 p2p_group_presence_req(struct p2p_group *group,
564 const u8 *client_interface_addr,
565 const u8 *noa, size_t noa_len);
566 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
567 size_t group_id_len);
570 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
571 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
573 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
574 void p2p_buf_add_status(struct wpabuf *buf, u8 status);
575 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
576 struct p2p_device *peer);
577 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
578 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
579 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
580 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
581 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
582 u8 reg_class, u8 channel);
583 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
584 u8 reg_class, u8 channel);
585 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
586 struct p2p_channels *chan);
587 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
589 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
590 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
591 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
592 const u8 *ssid, size_t ssid_len);
593 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
594 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
595 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
596 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
598 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
599 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
603 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
604 struct p2p_device *dev);
605 void p2p_free_sd_queries(struct p2p_data *p2p);
606 void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
607 const u8 *data, size_t len, int rx_freq);
608 void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
609 const u8 *data, size_t len, int rx_freq);
610 void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
611 const u8 *data, size_t len, int rx_freq);
612 void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
613 const u8 *data, size_t len, int rx_freq);
614 int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
617 int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
618 struct p2p_device *dev,
619 const u8 *channel_list, size_t channel_list_len);
620 void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
621 const u8 *data, size_t len, int rx_freq);
622 void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
623 const u8 *data, size_t len, int rx_freq);
624 void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
625 const u8 *data, size_t len);
626 int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
627 u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
630 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
631 const u8 *data, size_t len, int rx_freq);
632 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
633 const u8 *data, size_t len);
634 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
635 int join, int force_freq);
636 void p2p_reset_pending_pd(struct p2p_data *p2p);
638 /* p2p_invitation.c */
639 void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
640 const u8 *data, size_t len, int rx_freq);
641 void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
642 const u8 *data, size_t len);
643 int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
644 const u8 *go_dev_addr);
645 void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
646 void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
649 void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
650 const u8 *data, size_t len, int rx_freq);
651 void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
652 int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
653 void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
654 void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
655 const u8 *data, size_t len);
656 void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
657 void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
658 const u8 *data, size_t len, int rx_freq);
661 void p2p_set_state(struct p2p_data *p2p, int new_state);
662 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
664 void p2p_clear_timeout(struct p2p_data *p2p);
665 void p2p_continue_find(struct p2p_data *p2p);
666 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
668 struct p2p_message *msg);
669 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
670 struct p2p_device *dev, struct p2p_message *msg);
671 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
672 const u8 *ies, size_t ies_len, int scan_res);
673 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
674 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
676 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
678 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
679 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
680 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
681 size_t num_req_dev_type);
682 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
683 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
684 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
685 const u8 *src, const u8 *bssid, const u8 *buf,
686 size_t len, unsigned int wait_time);
687 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);