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
;
56 u8 intended_addr
[ETH_ALEN
];
59 struct p2p_channels channels
;
65 * req_config_methods - Pending provision discovery methods
67 u16 req_config_methods
;
70 * wps_prov_info - Stored provisioning WPS config method
72 * This is used to store pending WPS config method between Provisioning
73 * Discovery and connection to a running group.
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)
93 #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
94 #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17)
95 #define P2P_DEV_NO_PREF_CHAN BIT(18)
98 int status
; /* enum p2p_status_code */
99 unsigned int wait_count
;
100 unsigned int connect_reqs
;
101 unsigned int invitation_reqs
;
103 u16 ext_listen_period
;
104 u16 ext_listen_interval
;
110 struct p2p_sd_query
{
111 struct p2p_sd_query
*next
;
114 int wsd
; /* Wi-Fi Display Service Discovery Request */
118 struct p2p_pending_action_tx
{
124 unsigned int wait_time
;
125 /* Followed by len octets of the frame */
129 * struct p2p_data - P2P module data (internal to P2P module)
133 * cfg - P2P module configuration
135 * This is included in the same memory allocation with the
136 * struct p2p_data and as such, must not be freed separately.
138 struct p2p_config
*cfg
;
141 * state - The current P2P state
150 * P2P_SEARCH - Search (Device Discovery)
155 * P2P_CONNECT - Trying to start GO Negotiation
160 * P2P_CONNECT_LISTEN - Listen during GO Negotiation start
165 * P2P_GO_NEG - In GO Negotiation
170 * P2P_LISTEN_ONLY - Listen only
175 * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
177 P2P_WAIT_PEER_CONNECT
,
180 * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
185 * P2P_SD_DURING_FIND - Service Discovery during find
190 * P2P_PROVISIONING - Provisioning (during group formation)
195 * P2P_PD_DURING_FIND - Provision Discovery during find
200 * P2P_INVITE - Trying to start Invite
205 * P2P_INVITE_LISTEN - Listen during Invite
210 * P2P_SEARCH_WHEN_READY - Waiting to start Search
212 P2P_SEARCH_WHEN_READY
,
215 * P2P_CONTINUE_SEARCH_WHEN_READY - Waiting to continue Search
217 P2P_CONTINUE_SEARCH_WHEN_READY
,
221 * min_disc_int - minDiscoverableInterval
226 * max_disc_int - maxDiscoverableInterval
231 * max_disc_tu - Maximum number of TUs for discoverable interval
236 * devices - List of known P2P Device peers
238 struct dl_list devices
;
241 * go_neg_peer - Pointer to GO Negotiation peer
243 struct p2p_device
*go_neg_peer
;
246 * invite_peer - Pointer to Invite peer
248 struct p2p_device
*invite_peer
;
250 const u8
*invite_go_dev_addr
;
251 u8 invite_go_dev_addr_buf
[ETH_ALEN
];
254 * sd_peer - Pointer to Service Discovery peer
256 struct p2p_device
*sd_peer
;
259 * sd_query - Pointer to Service Discovery query
261 struct p2p_sd_query
*sd_query
;
263 /* GO Negotiation data */
266 * intended_addr - Local Intended P2P Interface Address
268 * This address is used during group owner negotiation as the Intended
269 * P2P Interface Address and the group interface will be created with
270 * address as the local address in case of successfully completed
273 u8 intended_addr
[ETH_ALEN
];
276 * go_intent - Local GO Intent to be used during GO Negotiation
281 * next_tie_breaker - Next tie-breaker value to use in GO Negotiation
286 * ssid - Selected SSID for GO Negotiation (if local end will be GO)
291 * ssid_len - ssid length in octets
296 * ssid_set - Whether SSID is already set for GO Negotiation
301 * Regulatory class for own operational channel
306 * op_channel - Own operational channel
311 * channels - Own supported regulatory classes and channels
313 * List of supposerted channels per regulatory class. The regulatory
314 * classes are defined in IEEE Std 802.11-2007 Annex J and the
315 * numbering of the clases depends on the configured country code.
317 struct p2p_channels channels
;
319 enum p2p_pending_action_state
{
320 P2P_NO_PENDING_ACTION
,
321 P2P_PENDING_GO_NEG_REQUEST
,
322 P2P_PENDING_GO_NEG_RESPONSE
,
323 P2P_PENDING_GO_NEG_RESPONSE_FAILURE
,
324 P2P_PENDING_GO_NEG_CONFIRM
,
327 P2P_PENDING_INVITATION_REQUEST
,
328 P2P_PENDING_INVITATION_RESPONSE
,
329 P2P_PENDING_DEV_DISC_REQUEST
,
330 P2P_PENDING_DEV_DISC_RESPONSE
,
331 P2P_PENDING_GO_DISC_REQ
332 } pending_action_state
;
334 unsigned int pending_listen_freq
;
335 unsigned int pending_listen_sec
;
336 unsigned int pending_listen_usec
;
344 * sd_queries - Pending service discovery queries
346 struct p2p_sd_query
*sd_queries
;
349 * srv_update_indic - Service Update Indicator for local services
351 u16 srv_update_indic
;
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
;
388 unsigned int after_scan_tx_in_progress
:1;
390 /* Requested device types for find/search */
391 unsigned int num_req_dev_types
;
394 u8 find_dev_id_buf
[ETH_ALEN
];
396 struct os_time find_start
; /* time of last p2p_find start */
398 struct p2p_group
**groups
;
401 struct p2p_device
*pending_client_disc_go
;
402 u8 pending_client_disc_addr
[ETH_ALEN
];
403 u8 pending_dev_disc_dialog_token
;
404 u8 pending_dev_disc_addr
[ETH_ALEN
];
405 int pending_dev_disc_freq
;
406 unsigned int pending_client_disc_freq
;
409 unsigned int ext_listen_period
;
410 unsigned int ext_listen_interval
;
411 unsigned int ext_listen_interval_sec
;
412 unsigned int ext_listen_interval_usec
;
414 u8 peer_filter
[ETH_ALEN
];
420 int best_freq_overall
;
421 int own_freq_preference
;
424 * wps_vendor_ext - WPS Vendor Extensions to add
426 struct wpabuf
*wps_vendor_ext
[P2P_MAX_WPS_VENDOR_EXT
];
429 * user_initiated_pd - Whether a PD request is user initiated or not.
431 u8 user_initiated_pd
;
434 * Keep track of which peer a given PD request was sent to.
435 * Used to raise a timeout alert in case there is no response.
437 u8 pending_pd_devaddr
[ETH_ALEN
];
440 * Retry counter for provision discovery requests when issued
446 * pd_force_freq - Forced frequency for PD retries or 0 to auto-select
448 * This is is used during PD retries for join-a-group case to use the
449 * correct operating frequency determined from a BSS entry for the GO.
456 /* Extra delay in milliseconds between search iterations */
457 unsigned int search_delay
;
460 #ifdef CONFIG_WIFI_DISPLAY
461 struct wpabuf
*wfd_ie_beacon
;
462 struct wpabuf
*wfd_ie_probe_req
;
463 struct wpabuf
*wfd_ie_probe_resp
;
464 struct wpabuf
*wfd_ie_assoc_req
;
465 struct wpabuf
*wfd_ie_invitation
;
466 struct wpabuf
*wfd_ie_prov_disc_req
;
467 struct wpabuf
*wfd_ie_prov_disc_resp
;
468 struct wpabuf
*wfd_ie_go_neg
;
469 struct wpabuf
*wfd_dev_info
;
470 struct wpabuf
*wfd_assoc_bssid
;
471 struct wpabuf
*wfd_coupled_sink_info
;
472 #endif /* CONFIG_WIFI_DISPLAY */
476 * struct p2p_message - Parsed P2P message (or P2P IE)
479 struct wpabuf
*p2p_attributes
;
480 struct wpabuf
*wps_attributes
;
481 struct wpabuf
*wfd_subelems
;
485 const u8
*capability
;
488 const u8
*listen_channel
;
489 const u8
*operating_channel
;
490 const u8
*channel_list
;
492 const u8
*config_timeout
;
493 const u8
*intended_addr
;
494 const u8
*group_bssid
;
495 const u8
*invitation_flags
;
497 const u8
*group_info
;
498 size_t group_info_len
;
505 const u8
*manageability
;
510 const u8
*ext_listen_timing
;
512 const u8
*minor_reason_code
;
514 /* P2P Device Info */
515 const u8
*p2p_device_info
;
516 size_t p2p_device_info_len
;
517 const u8
*p2p_device_addr
;
518 const u8
*pri_dev_type
;
519 u8 num_sec_dev_types
;
520 char device_name
[33];
525 u16 wps_config_methods
;
526 const u8
*wps_pri_dev_type
;
527 const u8
*wps_sec_dev_type_list
;
528 size_t wps_sec_dev_type_list_len
;
529 const u8
*wps_vendor_ext
[P2P_MAX_WPS_VENDOR_EXT
];
530 size_t wps_vendor_ext_len
[P2P_MAX_WPS_VENDOR_EXT
];
531 const u8
*manufacturer
;
532 size_t manufacturer_len
;
533 const u8
*model_name
;
534 size_t model_name_len
;
535 const u8
*model_number
;
536 size_t model_number_len
;
537 const u8
*serial_number
;
538 size_t serial_number_len
;
540 /* DS Parameter Set IE */
548 #define P2P_MAX_GROUP_ENTRIES 50
550 struct p2p_group_info
{
551 unsigned int num_clients
;
552 struct p2p_client_info
{
553 const u8
*p2p_device_addr
;
554 const u8
*p2p_interface_addr
;
557 const u8
*pri_dev_type
;
558 u8 num_sec_dev_types
;
559 const u8
*sec_dev_types
;
560 const char *dev_name
;
562 } client
[P2P_MAX_GROUP_ENTRIES
];
567 int p2p_random(char *buf
, size_t len
);
568 int p2p_channel_to_freq(int op_class
, int channel
);
569 int p2p_freq_to_channel(unsigned int freq
, u8
*op_class
, u8
*channel
);
570 void p2p_channels_intersect(const struct p2p_channels
*a
,
571 const struct p2p_channels
*b
,
572 struct p2p_channels
*res
);
573 int p2p_channels_includes(const struct p2p_channels
*channels
, u8 reg_class
,
577 int p2p_parse_p2p_ie(const struct wpabuf
*buf
, struct p2p_message
*msg
);
578 int p2p_parse_ies(const u8
*data
, size_t len
, struct p2p_message
*msg
);
579 int p2p_parse(const u8
*data
, size_t len
, struct p2p_message
*msg
);
580 void p2p_parse_free(struct p2p_message
*msg
);
581 int p2p_attr_text(struct wpabuf
*data
, char *buf
, char *end
);
582 int p2p_group_info_parse(const u8
*gi
, size_t gi_len
,
583 struct p2p_group_info
*info
);
587 struct p2p_noa_desc
{
595 const u8
* p2p_group_get_interface_addr(struct p2p_group
*group
);
596 u8
p2p_group_presence_req(struct p2p_group
*group
,
597 const u8
*client_interface_addr
,
598 const u8
*noa
, size_t noa_len
);
599 int p2p_group_is_group_id_match(struct p2p_group
*group
, const u8
*group_id
,
600 size_t group_id_len
);
601 void p2p_group_update_ies(struct p2p_group
*group
);
602 struct wpabuf
* p2p_group_get_wfd_ie(struct p2p_group
*g
);
605 void p2p_buf_add_action_hdr(struct wpabuf
*buf
, u8 subtype
, u8 dialog_token
);
606 void p2p_buf_add_public_action_hdr(struct wpabuf
*buf
, u8 subtype
,
608 u8
* p2p_buf_add_ie_hdr(struct wpabuf
*buf
);
609 void p2p_buf_add_status(struct wpabuf
*buf
, u8 status
);
610 void p2p_buf_add_device_info(struct wpabuf
*buf
, struct p2p_data
*p2p
,
611 struct p2p_device
*peer
);
612 void p2p_buf_add_device_id(struct wpabuf
*buf
, const u8
*dev_addr
);
613 void p2p_buf_update_ie_hdr(struct wpabuf
*buf
, u8
*len
);
614 void p2p_buf_add_capability(struct wpabuf
*buf
, u8 dev_capab
, u8 group_capab
);
615 void p2p_buf_add_go_intent(struct wpabuf
*buf
, u8 go_intent
);
616 void p2p_buf_add_listen_channel(struct wpabuf
*buf
, const char *country
,
617 u8 reg_class
, u8 channel
);
618 void p2p_buf_add_operating_channel(struct wpabuf
*buf
, const char *country
,
619 u8 reg_class
, u8 channel
);
620 void p2p_buf_add_channel_list(struct wpabuf
*buf
, const char *country
,
621 struct p2p_channels
*chan
);
622 void p2p_buf_add_config_timeout(struct wpabuf
*buf
, u8 go_timeout
,
624 void p2p_buf_add_intended_addr(struct wpabuf
*buf
, const u8
*interface_addr
);
625 void p2p_buf_add_group_bssid(struct wpabuf
*buf
, const u8
*bssid
);
626 void p2p_buf_add_group_id(struct wpabuf
*buf
, const u8
*dev_addr
,
627 const u8
*ssid
, size_t ssid_len
);
628 void p2p_buf_add_invitation_flags(struct wpabuf
*buf
, u8 flags
);
629 void p2p_buf_add_noa(struct wpabuf
*buf
, u8 noa_index
, u8 opp_ps
, u8 ctwindow
,
630 struct p2p_noa_desc
*desc1
, struct p2p_noa_desc
*desc2
);
631 void p2p_buf_add_ext_listen_timing(struct wpabuf
*buf
, u16 period
,
633 void p2p_buf_add_p2p_interface(struct wpabuf
*buf
, struct p2p_data
*p2p
);
634 void p2p_build_wps_ie(struct p2p_data
*p2p
, struct wpabuf
*buf
, int pw_id
,
638 struct p2p_sd_query
* p2p_pending_sd_req(struct p2p_data
*p2p
,
639 struct p2p_device
*dev
);
640 void p2p_free_sd_queries(struct p2p_data
*p2p
);
641 void p2p_rx_gas_initial_req(struct p2p_data
*p2p
, const u8
*sa
,
642 const u8
*data
, size_t len
, int rx_freq
);
643 void p2p_rx_gas_initial_resp(struct p2p_data
*p2p
, const u8
*sa
,
644 const u8
*data
, size_t len
, int rx_freq
);
645 void p2p_rx_gas_comeback_req(struct p2p_data
*p2p
, const u8
*sa
,
646 const u8
*data
, size_t len
, int rx_freq
);
647 void p2p_rx_gas_comeback_resp(struct p2p_data
*p2p
, const u8
*sa
,
648 const u8
*data
, size_t len
, int rx_freq
);
649 int p2p_start_sd(struct p2p_data
*p2p
, struct p2p_device
*dev
);
652 int p2p_peer_channels_check(struct p2p_data
*p2p
, struct p2p_channels
*own
,
653 struct p2p_device
*dev
,
654 const u8
*channel_list
, size_t channel_list_len
);
655 void p2p_process_go_neg_req(struct p2p_data
*p2p
, const u8
*sa
,
656 const u8
*data
, size_t len
, int rx_freq
);
657 void p2p_process_go_neg_resp(struct p2p_data
*p2p
, const u8
*sa
,
658 const u8
*data
, size_t len
, int rx_freq
);
659 void p2p_process_go_neg_conf(struct p2p_data
*p2p
, const u8
*sa
,
660 const u8
*data
, size_t len
);
661 int p2p_connect_send(struct p2p_data
*p2p
, struct p2p_device
*dev
);
662 u16
p2p_wps_method_pw_id(enum p2p_wps_method wps_method
);
663 void p2p_reselect_channel(struct p2p_data
*p2p
,
664 struct p2p_channels
*intersection
);
667 void p2p_process_prov_disc_req(struct p2p_data
*p2p
, const u8
*sa
,
668 const u8
*data
, size_t len
, int rx_freq
);
669 void p2p_process_prov_disc_resp(struct p2p_data
*p2p
, const u8
*sa
,
670 const u8
*data
, size_t len
);
671 int p2p_send_prov_disc_req(struct p2p_data
*p2p
, struct p2p_device
*dev
,
672 int join
, int force_freq
);
673 void p2p_reset_pending_pd(struct p2p_data
*p2p
);
675 /* p2p_invitation.c */
676 void p2p_process_invitation_req(struct p2p_data
*p2p
, const u8
*sa
,
677 const u8
*data
, size_t len
, int rx_freq
);
678 void p2p_process_invitation_resp(struct p2p_data
*p2p
, const u8
*sa
,
679 const u8
*data
, size_t len
);
680 int p2p_invite_send(struct p2p_data
*p2p
, struct p2p_device
*dev
,
681 const u8
*go_dev_addr
);
682 void p2p_invitation_req_cb(struct p2p_data
*p2p
, int success
);
683 void p2p_invitation_resp_cb(struct p2p_data
*p2p
, int success
);
686 void p2p_process_dev_disc_req(struct p2p_data
*p2p
, const u8
*sa
,
687 const u8
*data
, size_t len
, int rx_freq
);
688 void p2p_dev_disc_req_cb(struct p2p_data
*p2p
, int success
);
689 int p2p_send_dev_disc_req(struct p2p_data
*p2p
, struct p2p_device
*dev
);
690 void p2p_dev_disc_resp_cb(struct p2p_data
*p2p
, int success
);
691 void p2p_process_dev_disc_resp(struct p2p_data
*p2p
, const u8
*sa
,
692 const u8
*data
, size_t len
);
693 void p2p_go_disc_req_cb(struct p2p_data
*p2p
, int success
);
694 void p2p_process_go_disc_req(struct p2p_data
*p2p
, const u8
*da
, const u8
*sa
,
695 const u8
*data
, size_t len
, int rx_freq
);
698 void p2p_set_state(struct p2p_data
*p2p
, int new_state
);
699 void p2p_set_timeout(struct p2p_data
*p2p
, unsigned int sec
,
701 void p2p_clear_timeout(struct p2p_data
*p2p
);
702 void p2p_continue_find(struct p2p_data
*p2p
);
703 struct p2p_device
* p2p_add_dev_from_go_neg_req(struct p2p_data
*p2p
,
705 struct p2p_message
*msg
);
706 void p2p_add_dev_info(struct p2p_data
*p2p
, const u8
*addr
,
707 struct p2p_device
*dev
, struct p2p_message
*msg
);
708 int p2p_add_device(struct p2p_data
*p2p
, const u8
*addr
, int freq
,
709 struct os_time
*rx_time
, int level
, const u8
*ies
,
710 size_t ies_len
, int scan_res
);
711 struct p2p_device
* p2p_get_device(struct p2p_data
*p2p
, const u8
*addr
);
712 struct p2p_device
* p2p_get_device_interface(struct p2p_data
*p2p
,
714 void p2p_go_neg_failed(struct p2p_data
*p2p
, struct p2p_device
*peer
,
716 void p2p_go_complete(struct p2p_data
*p2p
, struct p2p_device
*peer
);
717 int p2p_match_dev_type(struct p2p_data
*p2p
, struct wpabuf
*wps
);
718 int dev_type_list_match(const u8
*dev_type
, const u8
*req_dev_type
[],
719 size_t num_req_dev_type
);
720 struct wpabuf
* p2p_build_probe_resp_ies(struct p2p_data
*p2p
);
721 void p2p_build_ssid(struct p2p_data
*p2p
, u8
*ssid
, size_t *ssid_len
);
722 int p2p_send_action(struct p2p_data
*p2p
, unsigned int freq
, const u8
*dst
,
723 const u8
*src
, const u8
*bssid
, const u8
*buf
,
724 size_t len
, unsigned int wait_time
);
725 void p2p_stop_listen_for_freq(struct p2p_data
*p2p
, int freq
);
726 int p2p_prepare_channel(struct p2p_data
*p2p
, struct p2p_device
*dev
,
727 unsigned int force_freq
, unsigned int pref_freq
);
728 void p2p_dbg(struct p2p_data
*p2p
, const char *fmt
, ...)
730 void p2p_info(struct p2p_data
*p2p
, const char *fmt
, ...)
732 void p2p_err(struct p2p_data
*p2p
, const char *fmt
, ...)