/* * P2P - Internal definitions for P2P module * Copyright (c) 2009-2010, Atheros Communications * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #ifndef P2P_I_H #define P2P_I_H #include "utils/list.h" #include "p2p.h" enum p2p_role_indication; enum p2p_go_state { UNKNOWN_GO, LOCAL_GO, REMOTE_GO }; /** * struct p2p_device - P2P Device data (internal to P2P module) */ struct p2p_device { struct dl_list list; struct os_reltime last_seen; int listen_freq; enum p2p_wps_method wps_method; u16 oob_pw_id; struct p2p_peer_info info; /* * If the peer was discovered based on an interface address (e.g., GO * from Beacon/Probe Response), the interface address is stored here. * p2p_device_addr must still be set in such a case to the unique * identifier for the P2P Device. */ u8 interface_addr[ETH_ALEN]; /* * P2P Device Address of the GO in whose group this P2P Device is a * client. */ u8 member_in_go_dev[ETH_ALEN]; /* * P2P Interface Address of the GO in whose group this P2P Device is a * client. */ u8 member_in_go_iface[ETH_ALEN]; int go_neg_req_sent; enum p2p_go_state go_state; u8 dialog_token; u8 tie_breaker; u8 intended_addr[ETH_ALEN]; char country[3]; struct p2p_channels channels; int oper_freq; u8 oper_ssid[32]; size_t oper_ssid_len; /** * req_config_methods - Pending provision discovery methods */ u16 req_config_methods; /** * wps_prov_info - Stored provisioning WPS config method * * This is used to store pending WPS config method between Provisioning * Discovery and connection to a running group. */ u16 wps_prov_info; #define P2P_DEV_PROBE_REQ_ONLY BIT(0) #define P2P_DEV_REPORTED BIT(1) #define P2P_DEV_NOT_YET_READY BIT(2) #define P2P_DEV_SD_INFO BIT(3) #define P2P_DEV_SD_SCHEDULE BIT(4) #define P2P_DEV_PD_PEER_DISPLAY BIT(5) #define P2P_DEV_PD_PEER_KEYPAD BIT(6) #define P2P_DEV_USER_REJECTED BIT(7) #define P2P_DEV_PEER_WAITING_RESPONSE BIT(8) #define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9) #define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10) #define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11) #define P2P_DEV_GROUP_CLIENT_ONLY BIT(12) #define P2P_DEV_FORCE_FREQ BIT(13) #define P2P_DEV_PD_FOR_JOIN BIT(14) #define P2P_DEV_REPORTED_ONCE BIT(15) #define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16) #define P2P_DEV_PD_BEFORE_GO_NEG BIT(17) #define P2P_DEV_NO_PREF_CHAN BIT(18) unsigned int flags; int status; /* enum p2p_status_code */ unsigned int wait_count; unsigned int connect_reqs; unsigned int invitation_reqs; u16 ext_listen_period; u16 ext_listen_interval; u8 go_timeout; u8 client_timeout; }; struct p2p_sd_query { struct p2p_sd_query *next; u8 peer[ETH_ALEN]; int for_all_peers; int wsd; /* Wi-Fi Display Service Discovery Request */ struct wpabuf *tlvs; }; struct p2p_pending_action_tx { unsigned int freq; u8 dst[ETH_ALEN]; u8 src[ETH_ALEN]; u8 bssid[ETH_ALEN]; size_t len; unsigned int wait_time; /* Followed by len octets of the frame */ }; /** * struct p2p_data - P2P module data (internal to P2P module) */ struct p2p_data { /** * cfg - P2P module configuration * * This is included in the same memory allocation with the * struct p2p_data and as such, must not be freed separately. */ struct p2p_config *cfg; /** * state - The current P2P state */ enum p2p_state { /** * P2P_IDLE - Idle */ P2P_IDLE, /** * P2P_SEARCH - Search (Device Discovery) */ P2P_SEARCH, /** * P2P_CONNECT - Trying to start GO Negotiation */ P2P_CONNECT, /** * P2P_CONNECT_LISTEN - Listen during GO Negotiation start */ P2P_CONNECT_LISTEN, /** * P2P_GO_NEG - In GO Negotiation */ P2P_GO_NEG, /** * P2P_LISTEN_ONLY - Listen only */ P2P_LISTEN_ONLY, /** * P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg */ P2P_WAIT_PEER_CONNECT, /** * P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg */ P2P_WAIT_PEER_IDLE, /** * P2P_SD_DURING_FIND - Service Discovery during find */ P2P_SD_DURING_FIND, /** * P2P_PROVISIONING - Provisioning (during group formation) */ P2P_PROVISIONING, /** * P2P_PD_DURING_FIND - Provision Discovery during find */ P2P_PD_DURING_FIND, /** * P2P_INVITE - Trying to start Invite */ P2P_INVITE, /** * P2P_INVITE_LISTEN - Listen during Invite */ P2P_INVITE_LISTEN, } state; /** * min_disc_int - minDiscoverableInterval */ int min_disc_int; /** * max_disc_int - maxDiscoverableInterval */ int max_disc_int; /** * max_disc_tu - Maximum number of TUs for discoverable interval */ int max_disc_tu; /** * devices - List of known P2P Device peers */ struct dl_list devices; /** * go_neg_peer - Pointer to GO Negotiation peer */ struct p2p_device *go_neg_peer; /** * invite_peer - Pointer to Invite peer */ struct p2p_device *invite_peer; const u8 *invite_go_dev_addr; u8 invite_go_dev_addr_buf[ETH_ALEN]; /** * sd_peer - Pointer to Service Discovery peer */ struct p2p_device *sd_peer; /** * sd_query - Pointer to Service Discovery query */ struct p2p_sd_query *sd_query; /* GO Negotiation data */ /** * intended_addr - Local Intended P2P Interface Address * * This address is used during group owner negotiation as the Intended * P2P Interface Address and the group interface will be created with * address as the local address in case of successfully completed * negotiation. */ u8 intended_addr[ETH_ALEN]; /** * go_intent - Local GO Intent to be used during GO Negotiation */ u8 go_intent; /** * next_tie_breaker - Next tie-breaker value to use in GO Negotiation */ u8 next_tie_breaker; /** * ssid - Selected SSID for GO Negotiation (if local end will be GO) */ u8 ssid[32]; /** * ssid_len - ssid length in octets */ size_t ssid_len; /** * ssid_set - Whether SSID is already set for GO Negotiation */ int ssid_set; /** * Regulatory class for own operational channel */ u8 op_reg_class; /** * op_channel - Own operational channel */ u8 op_channel; /** * channels - Own supported regulatory classes and channels * * List of supposerted channels per regulatory class. The regulatory * classes are defined in IEEE Std 802.11-2007 Annex J and the * numbering of the clases depends on the configured country code. */ struct p2p_channels channels; struct wpa_freq_range_list no_go_freq; enum p2p_pending_action_state { P2P_NO_PENDING_ACTION, P2P_PENDING_GO_NEG_REQUEST, P2P_PENDING_GO_NEG_RESPONSE, P2P_PENDING_GO_NEG_RESPONSE_FAILURE, P2P_PENDING_GO_NEG_CONFIRM, P2P_PENDING_SD, P2P_PENDING_PD, P2P_PENDING_INVITATION_REQUEST, P2P_PENDING_INVITATION_RESPONSE, P2P_PENDING_DEV_DISC_REQUEST, P2P_PENDING_DEV_DISC_RESPONSE, P2P_PENDING_GO_DISC_REQ } pending_action_state; unsigned int pending_listen_freq; unsigned int pending_listen_sec; unsigned int pending_listen_usec; u8 dev_capab; int in_listen; int drv_in_listen; /** * sd_queries - Pending service discovery queries */ struct p2p_sd_query *sd_queries; /** * srv_update_indic - Service Update Indicator for local services */ u16 srv_update_indic; struct wpabuf *sd_resp; /* Fragmented SD response */ u8 sd_resp_addr[ETH_ALEN]; u8 sd_resp_dialog_token; size_t sd_resp_pos; /* Offset in sd_resp */ u8 sd_frag_id; struct wpabuf *sd_rx_resp; /* Reassembled SD response */ u16 sd_rx_update_indic; /* P2P Invitation data */ enum p2p_invite_role inv_role; u8 inv_bssid[ETH_ALEN]; int inv_bssid_set; u8 inv_ssid[32]; size_t inv_ssid_len; u8 inv_sa[ETH_ALEN]; u8 inv_group_bssid[ETH_ALEN]; u8 *inv_group_bssid_ptr; u8 inv_go_dev_addr[ETH_ALEN]; u8 inv_status; int inv_op_freq; int inv_persistent; enum p2p_discovery_type find_type; unsigned int last_p2p_find_timeout; u8 last_prog_scan_class; u8 last_prog_scan_chan; int p2p_scan_running; enum p2p_after_scan { P2P_AFTER_SCAN_NOTHING, P2P_AFTER_SCAN_LISTEN, P2P_AFTER_SCAN_CONNECT } start_after_scan; u8 after_scan_peer[ETH_ALEN]; struct p2p_pending_action_tx *after_scan_tx; unsigned int after_scan_tx_in_progress:1; /* Requested device types for find/search */ unsigned int num_req_dev_types; u8 *req_dev_types; u8 *find_dev_id; u8 find_dev_id_buf[ETH_ALEN]; struct os_reltime find_start; /* time of last p2p_find start */ struct p2p_group **groups; size_t num_groups; struct p2p_device *pending_client_disc_go; u8 pending_client_disc_addr[ETH_ALEN]; u8 pending_dev_disc_dialog_token; u8 pending_dev_disc_addr[ETH_ALEN]; int pending_dev_disc_freq; unsigned int pending_client_disc_freq; int ext_listen_only; unsigned int ext_listen_period; unsigned int ext_listen_interval; unsigned int ext_listen_interval_sec; unsigned int ext_listen_interval_usec; u8 peer_filter[ETH_ALEN]; int cross_connect; int best_freq_24; int best_freq_5; int best_freq_overall; int own_freq_preference; /** * wps_vendor_ext - WPS Vendor Extensions to add */ struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; /* * user_initiated_pd - Whether a PD request is user initiated or not. */ u8 user_initiated_pd; /* * Keep track of which peer a given PD request was sent to. * Used to raise a timeout alert in case there is no response. */ u8 pending_pd_devaddr[ETH_ALEN]; /* * Retry counter for provision discovery requests when issued * in IDLE state. */ int pd_retries; /** * pd_force_freq - Forced frequency for PD retries or 0 to auto-select * * This is is used during PD retries for join-a-group case to use the * correct operating frequency determined from a BSS entry for the GO. */ int pd_force_freq; u8 go_timeout; u8 client_timeout; /* Extra delay in milliseconds between search iterations */ unsigned int search_delay; int in_search_delay; #ifdef CONFIG_WIFI_DISPLAY struct wpabuf *wfd_ie_beacon; struct wpabuf *wfd_ie_probe_req; struct wpabuf *wfd_ie_probe_resp; struct wpabuf *wfd_ie_assoc_req; struct wpabuf *wfd_ie_invitation; struct wpabuf *wfd_ie_prov_disc_req; struct wpabuf *wfd_ie_prov_disc_resp; struct wpabuf *wfd_ie_go_neg; struct wpabuf *wfd_dev_info; struct wpabuf *wfd_assoc_bssid; struct wpabuf *wfd_coupled_sink_info; #endif /* CONFIG_WIFI_DISPLAY */ }; /** * struct p2p_message - Parsed P2P message (or P2P IE) */ struct p2p_message { struct wpabuf *p2p_attributes; struct wpabuf *wps_attributes; struct wpabuf *wfd_subelems; u8 dialog_token; const u8 *capability; const u8 *go_intent; const u8 *status; const u8 *listen_channel; const u8 *operating_channel; const u8 *channel_list; u8 channel_list_len; const u8 *config_timeout; const u8 *intended_addr; const u8 *group_bssid; const u8 *invitation_flags; const u8 *group_info; size_t group_info_len; const u8 *group_id; size_t group_id_len; const u8 *device_id; const u8 *manageability; const u8 *noa; size_t noa_len; const u8 *ext_listen_timing; const u8 *minor_reason_code; const u8 *oob_go_neg_channel; /* P2P Device Info */ const u8 *p2p_device_info; size_t p2p_device_info_len; const u8 *p2p_device_addr; const u8 *pri_dev_type; u8 num_sec_dev_types; char device_name[33]; u16 config_methods; /* WPS IE */ u16 dev_password_id; u16 wps_config_methods; const u8 *wps_pri_dev_type; const u8 *wps_sec_dev_type_list; size_t wps_sec_dev_type_list_len; const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT]; size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT]; const u8 *manufacturer; size_t manufacturer_len; const u8 *model_name; size_t model_name_len; const u8 *model_number; size_t model_number_len; const u8 *serial_number; size_t serial_number_len; const u8 *oob_dev_password; size_t oob_dev_password_len; /* DS Parameter Set IE */ const u8 *ds_params; /* SSID IE */ const u8 *ssid; }; #define P2P_MAX_GROUP_ENTRIES 50 struct p2p_group_info { unsigned int num_clients; struct p2p_client_info { const u8 *p2p_device_addr; const u8 *p2p_interface_addr; u8 dev_capab; u16 config_methods; const u8 *pri_dev_type; u8 num_sec_dev_types; const u8 *sec_dev_types; const char *dev_name; size_t dev_name_len; } client[P2P_MAX_GROUP_ENTRIES]; }; /* p2p_utils.c */ int p2p_random(char *buf, size_t len); int p2p_channel_to_freq(int op_class, int channel); int p2p_freq_to_channel(unsigned int freq, u8 *op_class, u8 *channel); void p2p_channels_intersect(const struct p2p_channels *a, const struct p2p_channels *b, struct p2p_channels *res); void p2p_channels_union(const struct p2p_channels *a, const struct p2p_channels *b, struct p2p_channels *res); void p2p_channels_remove_freqs(struct p2p_channels *chan, const struct wpa_freq_range_list *list); int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class, u8 channel); void p2p_channels_dump(struct p2p_data *p2p, const char *title, const struct p2p_channels *chan); int p2p_channel_select(struct p2p_channels *chans, const int *classes, u8 *op_class, u8 *op_channel); /* p2p_parse.c */ int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg); int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg); int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg); void p2p_parse_free(struct p2p_message *msg); int p2p_attr_text(struct wpabuf *data, char *buf, char *end); int p2p_group_info_parse(const u8 *gi, size_t gi_len, struct p2p_group_info *info); /* p2p_build.c */ struct p2p_noa_desc { u8 count_type; u32 duration; u32 interval; u32 start_time; }; /* p2p_group.c */ const u8 * p2p_group_get_interface_addr(struct p2p_group *group); u8 p2p_group_presence_req(struct p2p_group *group, const u8 *client_interface_addr, const u8 *noa, size_t noa_len); int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id, size_t group_id_len); void p2p_group_update_ies(struct p2p_group *group); void p2p_group_force_beacon_update_ies(struct p2p_group *group); struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g); void p2p_buf_add_group_info(struct p2p_group *group, struct wpabuf *buf, int max_clients); int p2p_group_get_freq(struct p2p_group *group); void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token); void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token); u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf); void p2p_buf_add_status(struct wpabuf *buf, u8 status); void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p, struct p2p_device *peer); void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr); void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len); void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab); void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent); void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country, u8 reg_class, u8 channel); void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country, u8 reg_class, u8 channel); void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country, struct p2p_channels *chan); void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout, u8 client_timeout); void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr); void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid); void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr, const u8 *ssid, size_t ssid_len); void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags); void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow, struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2); void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period, u16 interval); void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p); void p2p_buf_add_oob_go_neg_channel(struct wpabuf *buf, const char *country, u8 oper_class, u8 channel, enum p2p_role_indication role); int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id, int all_attr); /* p2p_sd.c */ struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p, struct p2p_device *dev); void p2p_free_sd_queries(struct p2p_data *p2p); void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev); /* p2p_go_neg.c */ int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own, struct p2p_device *dev, const u8 *channel_list, size_t channel_list_len); void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len); int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev); u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method); void p2p_reselect_channel(struct p2p_data *p2p, struct p2p_channels *intersection); /* p2p_pd.c */ void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len); int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev, int join, int force_freq); void p2p_reset_pending_pd(struct p2p_data *p2p); /* p2p_invitation.c */ void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len); int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev, const u8 *go_dev_addr); void p2p_invitation_req_cb(struct p2p_data *p2p, int success); void p2p_invitation_resp_cb(struct p2p_data *p2p, int success); /* p2p_dev_disc.c */ void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq); void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success); int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev); void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success); void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len); void p2p_go_disc_req_cb(struct p2p_data *p2p, int success); void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa, const u8 *data, size_t len, int rx_freq); /* p2p.c */ void p2p_set_state(struct p2p_data *p2p, int new_state); void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec); void p2p_clear_timeout(struct p2p_data *p2p); void p2p_continue_find(struct p2p_data *p2p); struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, const u8 *addr, struct p2p_message *msg); void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, struct p2p_device *dev, struct p2p_message *msg); int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, struct os_reltime *rx_time, int level, const u8 *ies, size_t ies_len, int scan_res); struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr); struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, const u8 *addr); void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer, int status); void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer); int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps); int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], size_t num_req_dev_type); struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p); void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len); int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, const u8 *src, const u8 *bssid, const u8 *buf, size_t len, unsigned int wait_time); void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq); int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, unsigned int force_freq, unsigned int pref_freq, int go); void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) PRINTF_FORMAT(2, 3); void p2p_info(struct p2p_data *p2p, const char *fmt, ...) PRINTF_FORMAT(2, 3); void p2p_err(struct p2p_data *p2p, const char *fmt, ...) PRINTF_FORMAT(2, 3); #endif /* P2P_I_H */