p2p.h

/*
 * Wi-Fi Direct - 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_H
#define P2P_H

#include "common/ieee802_11_defs.h"
#include "wps/wps.h"

/* P2P ASP Setup Capability */
#define P2PS_SETUP_NONE 0
#define P2PS_SETUP_NEW BIT(0)
#define P2PS_SETUP_CLIENT BIT(1)
#define P2PS_SETUP_GROUP_OWNER BIT(2)

#define P2PS_WILD_HASH_STR "org.wi-fi.wfds"
#define P2PS_HASH_LEN 6
#define P2P_MAX_QUERY_HASH 6
#define P2PS_FEATURE_CAPAB_CPT_MAX 2

#define P2P_MAX_PREF_CHANNELS 100

#define P2P_MAX_REG_CLASSES 15

#define P2P_MAX_REG_CLASS_CHANNELS 20

struct p2p_channels {
    struct p2p_reg_class {
        u8 reg_class;

        u8 channel[P2P_MAX_REG_CLASS_CHANNELS];

        size_t channels;
    } reg_class[P2P_MAX_REG_CLASSES];

    size_t reg_classes;
};

enum p2p_wps_method {
    WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC, WPS_NFC,
    WPS_P2PS
};

struct p2p_go_neg_results {
    int status;

    int role_go;

    int freq;

    int ht40;

    int vht;

    u8 max_oper_chwidth;

    unsigned int vht_center_freq2;

    u8 ssid[SSID_MAX_LEN];

    size_t ssid_len;

    u8 psk[32];

    int psk_set;

    char passphrase[64];

    u8 peer_device_addr[ETH_ALEN];

    u8 peer_interface_addr[ETH_ALEN];

    enum p2p_wps_method wps_method;

#define P2P_MAX_CHANNELS 50

    int freq_list[P2P_MAX_CHANNELS];

    int persistent_group;

    unsigned int peer_config_timeout;
};

struct p2ps_provision {
    unsigned int pd_seeker:1;

    int status;

    u32 adv_id;

    u32 session_id;

    u16 method;

    u8 conncap;

    u8 role;

    u8 session_mac[ETH_ALEN];

    u8 adv_mac[ETH_ALEN];

    u8 cpt_mask;

    u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];

    unsigned int force_freq;

    unsigned int pref_freq;

    char info[0];
};

struct p2ps_advertisement {
    struct p2ps_advertisement *next;

    char *svc_info;

    u32 id;

    u16 config_methods;

    u8 state;

    u8 auto_accept;

    u8 hash[P2PS_HASH_LEN];

    u8 cpt_mask;

    u8 cpt_priority[P2PS_FEATURE_CAPAB_CPT_MAX + 1];

    char svc_name[0];
};


struct p2p_data;

enum p2p_scan_type {
    P2P_SCAN_SOCIAL,
    P2P_SCAN_FULL,
    P2P_SCAN_SPECIFIC,
    P2P_SCAN_SOCIAL_PLUS_ONE
};

#define P2P_MAX_WPS_VENDOR_EXT 10

struct p2p_peer_info {
    u8 p2p_device_addr[ETH_ALEN];

    u8 pri_dev_type[8];

    char device_name[WPS_DEV_NAME_MAX_LEN + 1];

    char manufacturer[WPS_MANUFACTURER_MAX_LEN + 1];

    char model_name[WPS_MODEL_NAME_MAX_LEN + 1];

    char model_number[WPS_MODEL_NUMBER_MAX_LEN + 1];

    char serial_number[WPS_SERIAL_NUMBER_MAX_LEN + 1];

    int level;

    u16 config_methods;

    u8 dev_capab;

    u8 group_capab;

    u8 wps_sec_dev_type_list[WPS_SEC_DEV_TYPE_MAX_LEN];

    size_t wps_sec_dev_type_list_len;

    struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];

    struct wpabuf *wfd_subelems;

    struct wpabuf *vendor_elems;

    struct wpabuf *p2ps_instance;
};

enum p2p_prov_disc_status {
    P2P_PROV_DISC_SUCCESS,
    P2P_PROV_DISC_TIMEOUT,
    P2P_PROV_DISC_REJECTED,
    P2P_PROV_DISC_TIMEOUT_JOIN,
    P2P_PROV_DISC_INFO_UNAVAILABLE,
};

struct p2p_channel {
    u8 op_class;
    u8 chan;
};

struct p2p_config {
    char country[3];

    u8 reg_class;

    u8 channel;

    u8 channel_forced;

    u8 op_reg_class;

    u8 op_channel;

    u8 cfg_op_channel;

    struct p2p_channels channels;

    struct p2p_channels cli_channels;

    unsigned int num_pref_chan;

    struct p2p_channel *pref_chan;

    u8 pri_dev_type[8];

#define P2P_SEC_DEVICE_TYPES 5

    u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];

    size_t num_sec_dev_types;

    u8 dev_addr[ETH_ALEN];

    char *dev_name;

    char *manufacturer;
    char *model_name;
    char *model_number;
    char *serial_number;

    u8 uuid[16];
    u16 config_methods;

    int concurrent_operations;

    size_t max_peers;

    int p2p_intra_bss;

    u8 ssid_postfix[SSID_MAX_LEN - 9];

    size_t ssid_postfix_len;

    unsigned int max_listen;

    unsigned int passphrase_len;

    void *cb_ctx;

    void (*debug_print)(void *ctx, int level, const char *msg);


    /* Callbacks to request lower layer driver operations */

    int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq,
            unsigned int num_req_dev_types,
            const u8 *req_dev_types, const u8 *dev_id, u16 pw_id);

    int (*send_probe_resp)(void *ctx, const struct wpabuf *buf,
                   unsigned int freq);

    int (*send_action)(void *ctx, unsigned int freq, const u8 *dst,
               const u8 *src, const u8 *bssid, const u8 *buf,
               size_t len, unsigned int wait_time);

    void (*send_action_done)(void *ctx);

    int (*start_listen)(void *ctx, unsigned int freq,
                unsigned int duration,
                const struct wpabuf *probe_resp_ie);
    void (*stop_listen)(void *ctx);

    int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf,
               size_t buf_len);

    /* Callbacks to notify events to upper layer management entity */

    void (*dev_found)(void *ctx, const u8 *addr,
              const struct p2p_peer_info *info,
              int new_device);

    void (*dev_lost)(void *ctx, const u8 *dev_addr);

    void (*find_stopped)(void *ctx);

    void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id,
                  u8 go_intent);

    void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res);

    void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token,
               u16 update_indic, const u8 *tlvs, size_t tlvs_len);

    void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic,
                const u8 *tlvs, size_t tlvs_len);

    void (*prov_disc_req)(void *ctx, const u8 *peer, u16 config_methods,
                  const u8 *dev_addr, const u8 *pri_dev_type,
                  const char *dev_name, u16 supp_config_methods,
                  u8 dev_capab, u8 group_capab,
                  const u8 *group_id, size_t group_id_len);

    void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods);

    void (*prov_disc_fail)(void *ctx, const u8 *peer,
                   enum p2p_prov_disc_status status,
                   u32 adv_id, const u8 *adv_mac,
                   const char *deferred_session_resp);

    u8 (*invitation_process)(void *ctx, const u8 *sa, const u8 *bssid,
                 const u8 *go_dev_addr, const u8 *ssid,
                 size_t ssid_len, int *go, u8 *group_bssid,
                 int *force_freq, int persistent_group,
                 const struct p2p_channels *channels,
                 int dev_pw_id);

    void (*invitation_received)(void *ctx, const u8 *sa, const u8 *bssid,
                    const u8 *ssid, size_t ssid_len,
                    const u8 *go_dev_addr, u8 status,
                    int op_freq);

    void (*invitation_result)(void *ctx, int status, const u8 *bssid,
                  const struct p2p_channels *channels,
                  const u8 *addr, int freq, int peer_oper_freq);

    int (*go_connected)(void *ctx, const u8 *dev_addr);

    void (*presence_resp)(void *ctx, const u8 *src, u8 status,
                  const u8 *noa, size_t noa_len);

    int (*is_concurrent_session_active)(void *ctx);

    int (*is_p2p_in_progress)(void *ctx);

    int (*get_persistent_group)(void *ctx, const u8 *addr, const u8 *ssid,
                    size_t ssid_len, u8 *go_dev_addr,
                    u8 *ret_ssid, size_t *ret_ssid_len,
                    u8 *intended_iface_addr);

    int (*get_go_info)(void *ctx, u8 *intended_addr,
               u8 *ssid, size_t *ssid_len, int *group_iface,
               unsigned int *freq);

    int (*remove_stale_groups)(void *ctx, const u8 *peer, const u8 *go,
                   const u8 *ssid, size_t ssid_len);

    void (*p2ps_prov_complete)(void *ctx, u8 status, const u8 *dev,
                   const u8 *adv_mac, const u8 *ses_mac,
                   const u8 *grp_mac, u32 adv_id, u32 ses_id,
                   u8 conncap, int passwd_id,
                   const u8 *persist_ssid,
                   size_t persist_ssid_size, int response_done,
                   int prov_start, const char *session_info,
                   const u8 *feat_cap, size_t feat_cap_len,
                   unsigned int freq, const u8 *group_ssid,
                   size_t group_ssid_len);

    int (*prov_disc_resp_cb)(void *ctx);

    u8 (*p2ps_group_capability)(void *ctx, u8 incoming, u8 role,
                    unsigned int *force_freq,
                    unsigned int *pref_freq);

    int (*get_pref_freq_list)(void *ctx, int go,
                  unsigned int *len, unsigned int *freq_list);
};


/* P2P module initialization/deinitialization */

struct p2p_data * p2p_init(const struct p2p_config *cfg);

void p2p_deinit(struct p2p_data *p2p);

void p2p_flush(struct p2p_data *p2p);

int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr);

int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name);

int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer);
int p2p_set_model_name(struct p2p_data *p2p, const char *model_name);
int p2p_set_model_number(struct p2p_data *p2p, const char *model_number);
int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number);

void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods);
void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid);

int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type);

int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
              size_t num_dev_types);

int p2p_set_country(struct p2p_data *p2p, const char *country);


/* Commands from upper layer management entity */

enum p2p_discovery_type {
    P2P_FIND_START_WITH_FULL,
    P2P_FIND_ONLY_SOCIAL,
    P2P_FIND_PROGRESSIVE
};

int p2p_find(struct p2p_data *p2p, unsigned int timeout,
         enum p2p_discovery_type type,
         unsigned int num_req_dev_types, const u8 *req_dev_types,
         const u8 *dev_id, unsigned int search_delay,
         u8 seek_count, const char **seek_string, int freq);

void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status);

void p2p_stop_find(struct p2p_data *p2p);

void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq);

int p2p_listen(struct p2p_data *p2p, unsigned int timeout);

void p2p_stop_listen(struct p2p_data *p2p);

int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
        enum p2p_wps_method wps_method,
        int go_intent, const u8 *own_interface_addr,
        unsigned int force_freq, int persistent_group,
        const u8 *force_ssid, size_t force_ssid_len,
        int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id);

int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
          enum p2p_wps_method wps_method,
          int go_intent, const u8 *own_interface_addr,
          unsigned int force_freq, int persistent_group,
          const u8 *force_ssid, size_t force_ssid_len,
          unsigned int pref_freq, u16 oob_pw_id);

int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr);

int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr,
              struct p2ps_provision *p2ps_prov, u16 config_methods,
              int join, int force_freq,
              int user_initiated_pd);

void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst,
              const struct wpabuf *tlvs);

#ifdef CONFIG_WIFI_DISPLAY
void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst,
              const struct wpabuf *tlvs);
#endif /* CONFIG_WIFI_DISPLAY */

int p2p_sd_cancel_request(struct p2p_data *p2p, void *req);

void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
             u8 dialog_token, const struct wpabuf *resp_tlvs);

void p2p_sd_service_update(struct p2p_data *p2p);


enum p2p_invite_role {
    P2P_INVITE_ROLE_GO,
    P2P_INVITE_ROLE_ACTIVE_GO,
    P2P_INVITE_ROLE_CLIENT
};

int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role,
           const u8 *bssid, const u8 *ssid, size_t ssid_len,
           unsigned int force_freq, const u8 *go_dev_addr,
           int persistent_group, unsigned int pref_freq, int dev_pw_id);

int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
             const u8 *own_interface_addr, unsigned int freq,
             u32 duration1, u32 interval1, u32 duration2,
             u32 interval2);

int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
           unsigned int interval);

/* Event notifications from upper layer management operations */

void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr);

void p2p_group_formation_failed(struct p2p_data *p2p);

u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr);

void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr);


/* Event notifications from lower layer driver operations */

enum p2p_probe_req_status {
    P2P_PREQ_MALFORMED,
    P2P_PREQ_NOT_LISTEN,
    P2P_PREQ_NOT_P2P,
    P2P_PREQ_NOT_PROCESSED,
    P2P_PREQ_PROCESSED
};

enum p2p_probe_req_status
p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
         const u8 *bssid, const u8 *ie, size_t ie_len,
         unsigned int rx_freq, int p2p_lo_started);

void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
           const u8 *bssid, u8 category,
           const u8 *data, size_t len, int freq);

int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
             struct os_reltime *rx_time, int level, const u8 *ies,
             size_t ies_len);

void p2p_scan_res_handled(struct p2p_data *p2p);

enum p2p_send_action_result {
    P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
    P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */,
    P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
};

void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
            const u8 *src, const u8 *bssid,
            enum p2p_send_action_result result);

void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
           unsigned int duration);

int p2p_listen_end(struct p2p_data *p2p, unsigned int freq);

void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
              const u8 *ie, size_t ie_len);

void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
            const u8 *ie, size_t ie_len);


/* Per-group P2P state for GO */

struct p2p_group;

struct p2p_group_config {
    int persistent_group;

    u8 interface_addr[ETH_ALEN];

    unsigned int max_clients;

    u8 ssid[SSID_MAX_LEN];

    size_t ssid_len;

    int freq;

    int ip_addr_alloc;

    void *cb_ctx;

    void (*ie_update)(void *ctx, struct wpabuf *beacon_ies,
              struct wpabuf *proberesp_ies);

    void (*idle_update)(void *ctx, int idle);
};

struct p2p_group * p2p_group_init(struct p2p_data *p2p,
                  struct p2p_group_config *config);

void p2p_group_deinit(struct p2p_group *group);

int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
              const u8 *ie, size_t len);

struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status);

void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr);

void p2p_group_notif_formation_done(struct p2p_group *group);

int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
            size_t noa_len);

int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);

int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p);

int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id,
              const u8 *searching_dev, int rx_freq);


/* Generic helper functions */

int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end);

int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);

int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr);

int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr);

int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
             size_t len, int p2p_group, struct wpabuf *p2p_ie);

void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
         unsigned int bands);

size_t p2p_scan_ie_buf_len(struct p2p_data *p2p);

int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params);

u8 p2p_get_group_capab(const struct wpabuf *p2p_ie);

int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie);

const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);

const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
                           const u8 *addr, int next);

int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
              char *buf, size_t buflen);

int p2p_peer_known(struct p2p_data *p2p, const u8 *addr);

void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);

void p2p_set_managed_oper(struct p2p_data *p2p, int enabled);

int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
                 u8 *op_channel);

int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
               u8 forced);

u8 p2p_get_listen_channel(struct p2p_data *p2p);

int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len);

int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
               u8 *iface_addr);
int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
               u8 *dev_addr);

void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr);

void p2p_set_cross_connect(struct p2p_data *p2p, int enabled);

int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr);

void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled);

int p2p_channels_includes_freq(const struct p2p_channels *channels,
                   unsigned int freq);

int p2p_channels_to_freqs(const struct p2p_channels *channels,
              int *freq_list, unsigned int max_len);

int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq);

int p2p_supported_freq_go(struct p2p_data *p2p, unsigned int freq);

int p2p_supported_freq_cli(struct p2p_data *p2p, unsigned int freq);

unsigned int p2p_get_pref_freq(struct p2p_data *p2p,
                   const struct p2p_channels *channels);

void p2p_update_channel_list(struct p2p_data *p2p,
                 const struct p2p_channels *chan,
                 const struct p2p_channels *cli_chan);

void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
               int freq_overall);

void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq);

const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p);

unsigned int p2p_get_group_num_members(struct p2p_group *group);

int p2p_client_limit_reached(struct p2p_group *group);

const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);

const u8 * p2p_group_get_client_interface_addr(struct p2p_group *group,
                           const u8 *dev_addr);

const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);

int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr);

const struct p2p_group_config * p2p_group_get_config(struct p2p_group *group);

void p2p_loop_on_all_groups(struct p2p_data *p2p,
                int (*group_callback)(struct p2p_group *group,
                          void *user_data),
                void *user_data);

const struct p2p_peer_info *
p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next);

void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);

int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
                 const struct wpabuf *vendor_ext);

int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
             int cfg_op_channel);

int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
              const struct p2p_channel *pref_chan);

int p2p_set_no_go_freq(struct p2p_data *p2p,
               const struct wpa_freq_range_list *list);

int p2p_in_progress(struct p2p_data *p2p);

const char * p2p_wps_method_text(enum p2p_wps_method method);

void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
                u8 client_timeout);

int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie);
int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem);
int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem);
int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
                  const struct wpabuf *elem);
struct wpabuf * wifi_display_encaps(struct wpabuf *subelems);

int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
             int max_disc_tu);

const char * p2p_get_state_txt(struct p2p_data *p2p);

struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
                       int client_freq,
                       const u8 *go_dev_addr,
                       const u8 *ssid, size_t ssid_len);
struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
                       int client_freq,
                       const u8 *go_dev_addr,
                       const u8 *ssid, size_t ssid_len);

struct p2p_nfc_params {
    int sel;
    const u8 *wsc_attr;
    size_t wsc_len;
    const u8 *p2p_attr;
    size_t p2p_len;

    enum {
        NO_ACTION, JOIN_GROUP, AUTH_JOIN, INIT_GO_NEG, RESP_GO_NEG,
        BOTH_GO, PEER_CLIENT
    } next_step;
    struct p2p_peer_info *peer;
    u8 oob_dev_pw[WPS_OOB_PUBKEY_HASH_LEN + 2 +
              WPS_OOB_DEVICE_PASSWORD_LEN];
    size_t oob_dev_pw_len;
    int go_freq;
    u8 go_dev_addr[ETH_ALEN];
    u8 go_ssid[SSID_MAX_LEN];
    size_t go_ssid_len;
};

int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
                    struct p2p_nfc_params *params);

void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
                      int go_intent,
                      const u8 *own_interface_addr);

int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len);

void p2p_loop_on_known_peers(struct p2p_data *p2p,
                 void (*peer_callback)(struct p2p_peer_info *peer,
                           void *user_data),
                 void *user_data);

void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem);

void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr);

struct p2ps_advertisement *
p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id);
int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
            const char *adv_str, u8 svc_state,
            u16 config_methods, const char *svc_info,
            const u8 *cpt_priority);
int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id);
void p2p_service_flush_asp(struct p2p_data *p2p);
struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p);

void p2p_expire_peers(struct p2p_data *p2p);

void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
                const unsigned int *pref_freq_list,
                unsigned int size);

int p2p_group_get_common_freqs(struct p2p_group *group, int *common_freqs,
                   unsigned int *num);

struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
                          unsigned int freq);

#endif /* P2P_H */