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hostap/wpa_supplicant/p2p_supplicant.h
Jouni Malinen 5bf9a6c859 P2P: Add event messages for possible PSK failures on P2P groups 
It is possible for the GO of a persistent group to change the PSK or
remove a client when per-client PSKs are used and this can happen
without the SSID changing (i.e., the group is still valid, but just not
for a specific client). If the client side of such persistent group ends
up trying to use an invalidated persistent group information, the
connection will fail in 4-way handshake. A new WPS provisioning step is
needed to recover from this.

Detect this type of case based on two 4-way handshake failures when
acting as a P2P client in a persistent group. A new
"P2P-PERSISTENT-PSK-FAIL id=<persistent group id>" event is used to
indicate when this happens. This makes it easier for upper layers to
remove the persistent group information with "REMOVE_NETWORK <persistent
group id>" if desired (e.g., based on user confirmation).

In addition to indicating the error cases for persistent groups, all
this type of PSK failures end up in the client removing the group with
the new reason=PSK_FAILURE information in the P2P-GROUP-REMOVED event.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-09-01 21:35:10 +03:00

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/*
* wpa_supplicant - P2P
* 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_SUPPLICANT_H
#define P2P_SUPPLICANT_H
enum p2p_wps_method;
struct p2p_go_neg_results;
enum p2p_send_action_result;
struct p2p_peer_info;
struct p2p_channels;
struct wps_event_fail;
int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s);
void wpas_p2p_deinit(struct wpa_supplicant *wpa_s);
void wpas_p2p_deinit_global(struct wpa_global *global);
int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s);
int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
const char *pin, enum p2p_wps_method wps_method,
int persistent_group, int auto_join, int join,
int auth, int go_intent, int freq, int persistent_id,
int pd, int ht40);
void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq, unsigned int duration);
void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq);
int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname);
int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
int freq, int ht40);
int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid, int addr_allocated,
int freq, int ht40,
const struct p2p_channels *channels);
struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid);
void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
int registrar);
enum wpas_p2p_prov_disc_use {
WPAS_P2P_PD_FOR_GO_NEG,
WPAS_P2P_PD_FOR_JOIN,
WPAS_P2P_PD_AUTO
};
int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
const char *config_method,
enum wpas_p2p_prov_disc_use use);
void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
const u8 *data, size_t data_len,
enum p2p_send_action_result result);
int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
char *end);
enum p2p_discovery_type;
int wpas_p2p_find(struct wpa_supplicant *wpa_s, 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);
void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s);
int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout);
int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
u8 *buf, size_t len, int p2p_group);
int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
const u8 *dst, const u8 *bssid,
const u8 *ie, size_t ie_len,
int ssi_signal);
void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
const u8 *sa, const u8 *bssid,
u8 category, const u8 *data, size_t len, int freq);
void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies);
void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
void wpas_dev_found(void *ctx, const u8 *addr,
const struct p2p_peer_info *info,
int new_device);
void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s);
void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res);
void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id);
void wpas_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 wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods);
void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
u16 update_indic, const u8 *tlvs, size_t tlvs_len);
void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
const u8 *tlvs, size_t tlvs_len);
u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
const struct wpabuf *tlvs);
u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
u8 version, const char *query);
u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
const u8 *dst, const char *role);
int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req);
void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
const u8 *dst, u8 dialog_token,
const struct wpabuf *resp_tlvs);
void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s);
void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s);
int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
struct wpabuf *query, struct wpabuf *resp);
int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
const struct wpabuf *query);
int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
const char *service);
int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
const char *service);
int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr);
int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
int ht40, int pref_freq);
int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
const u8 *peer_addr, const u8 *go_dev_addr);
void wpas_p2p_completed(struct wpa_supplicant *wpa_s);
int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
u32 interval1, u32 duration2, u32 interval2);
int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
unsigned int interval);
int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
u16 reason_code, const u8 *ie, size_t ie_len,
int locally_generated);
void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
u16 reason_code, const u8 *ie, size_t ie_len,
int locally_generated);
void wpas_p2p_update_config(struct wpa_supplicant *wpa_s);
int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
int duration);
int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled);
void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s);
void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s);
int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s);
void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s);
int wpas_p2p_cancel(struct wpa_supplicant *wpa_s);
void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s);
void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
int freq_24, int freq_5, int freq_overall);
int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr);
int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s);
void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
struct wps_event_fail *fail);
int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s);
void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid);
struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
const u8 *addr, const u8 *ssid,
size_t ssid_len);
void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
const u8 *addr);
int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s);
int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
struct hostapd_hw_modes *mode, u8 channel);
unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s);
void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
const u8 *p2p_dev_addr,
const u8 *psk, size_t psk_len);
void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
int iface_addr);
#ifdef CONFIG_P2P
void wpas_p2p_continue_after_scan(struct wpa_supplicant *wpa_s);
int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s);
#else /* CONFIG_P2P */
static inline void wpas_p2p_continue_after_scan(struct wpa_supplicant *wpa_s)
{
}
static inline int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
{
return 0;
}
#endif /* CONFIG_P2P */
#endif /* P2P_SUPPLICANT_H */
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