* Wi-Fi Direct - P2P module
* Copyright (c) 2009-2010, Atheros Communications
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#ifndef P2P_H
};
enum p2p_wps_method {
- WPS_NOT_READY, WPS_PIN_LABEL, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC
+ WPS_NOT_READY, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC
+};
+
+enum p2p_sd_action {
+ SRV_UPDATE, SRV_ADD, SRV_DEL, SRV_FLUSH
};
/**
*/
int freq;
+ int ht40;
+
/**
* ssid - SSID of the group
*/
size_t ssid_len;
/**
+ * psk - WPA pre-shared key (256 bits) (GO only)
+ */
+ u8 psk[32];
+
+ /**
+ * psk_set - Whether PSK field is configured (GO only)
+ */
+ int psk_set;
+
+ /**
* passphrase - WPA2-Personal passphrase for the group (GO only)
*/
char passphrase[64];
/**
* persistent_group - Whether the group should be made persistent
+ * 0 = not persistent
+ * 1 = persistent group without persistent reconnect
+ * 2 = persistent group with persistent reconnect
*/
int persistent_group;
size_t wps_sec_dev_type_list_len;
struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
+
+ /**
+ * wfd_subelems - Wi-Fi Display subelements from WFD IE(s)
+ */
+ struct wpabuf *wfd_subelems;
};
enum p2p_prov_disc_status {
P2P_PROV_DISC_SUCCESS,
P2P_PROV_DISC_TIMEOUT,
P2P_PROV_DISC_REJECTED,
+ P2P_PROV_DISC_TIMEOUT_JOIN,
+};
+
+struct p2p_channel {
+ u8 op_class;
+ u8 chan;
};
/**
struct p2p_channels channels;
/**
+ * num_pref_chan - Number of pref_chan entries
+ */
+ unsigned int num_pref_chan;
+
+ /**
+ * pref_chan - Preferred channels for GO Negotiation
+ */
+ struct p2p_channel *pref_chan;
+
+ /**
* pri_dev_type - Primary Device Type (see WPS)
*/
u8 pri_dev_type[8];
*/
u8 dev_addr[ETH_ALEN];
-#ifdef ANDROID_BRCM_P2P_PATCH
- /**
- * p2p_dev_addr - P2P Device Address
- *
- * Holds the p2p device address. If the driver uses primary mac address
- * for p2p operations, then this will hold the same value as that of
- * dev_addr.
- */
- u8 p2p_dev_addr[ETH_ALEN];
-#endif
-
/**
* dev_name - Device Name
*/
size_t ssid_postfix_len;
/**
+ * max_listen - Maximum listen duration in ms
+ */
+ unsigned int max_listen;
+
+#ifdef ANDROID_P2P
+ enum p2p_concurrency_type {
+ P2P_NON_CONCURRENT,
+ P2P_SINGLE_CHANNEL_CONCURRENT,
+ P2P_MULTI_CHANNEL_CONCURRENT,
+ } p2p_concurrency;
+#endif
+
+ /**
* msg_ctx - Context to use with wpa_msg() calls
*/
void *msg_ctx;
* @freq: Specific frequency (MHz) to scan or 0 for no restriction
* @num_req_dev_types: Number of requested device types
* @req_dev_types: Array containing requested device types
+ * @dev_id: Device ID to search for or %NULL to find all devices
+ * @pw_id: Device Password ID
* Returns: 0 on success, -1 on failure
*
* This callback function is used to request a P2P scan or search
* operation to be completed. Type type argument specifies which type
* of scan is to be done. @P2P_SCAN_SOCIAL indicates that only the
* social channels (1, 6, 11) should be scanned. @P2P_SCAN_FULL
- * indicates that all channels are to be scanned. @P2P_SCAN_SPECIFIC
- * request a scan of a single channel specified by freq.
+ * indicates that all channels are to be scanned.
* @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels
* plus one extra channel specified by freq.
*
*/
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 *req_dev_types, const u8 *dev_id, u16 pw_id);
/**
* send_probe_resp - Transmit a Probe Response frame
* @supp_config_methods: Supported configuration Methods
* @dev_capab: Device Capabilities
* @group_capab: Group Capabilities
+ * @group_id: P2P Group ID (or %NULL if not included)
+ * @group_id_len: Length of P2P Group ID
*
* This callback is used to indicate reception of a Provision Discovery
* Request frame that the P2P module accepted.
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);
+ u8 dev_capab, u8 group_capab,
+ const u8 *group_id, size_t group_id_len);
/**
* prov_disc_resp - Callback on Provisiong Discovery Response
* local failure in transmitting the Invitation Request.
*/
void (*invitation_result)(void *ctx, int status, const u8 *bssid);
+
+ /**
+ * go_connected - Check whether we are connected to a GO
+ * @ctx: Callback context from cb_ctx
+ * @dev_addr: P2P Device Address of a GO
+ * Returns: 1 if we are connected as a P2P client to the specified GO
+ * or 0 if not.
+ */
+ int (*go_connected)(void *ctx, const u8 *dev_addr);
};
* @req_dev_types: Requested device types array, must be an array
* containing num_req_dev_types * WPS_DEV_TYPE_LEN bytes; %NULL if no
* requested device types.
+ * @dev_id: Device ID to search for or %NULL to find all devices
+ * @search_delay: Extra delay in milliseconds between search iterations
* Returns: 0 on success, -1 on failure
*/
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);
+ unsigned int num_req_dev_types, const u8 *req_dev_types,
+ const u8 *dev_id, unsigned int search_delay);
/**
* p2p_stop_find - Stop P2P Find (Device Discovery)
* @go_intent: Local GO intent value (1..15)
* @own_interface_addr: Intended interface address to use with the group
* @force_freq: The only allowed channel frequency in MHz or 0
- * @persistent_group: Whether to create a persistent group
+ * @persistent_group: Whether to create a persistent group (0 = no, 1 =
+ * persistent group without persistent reconnect, 2 = persistent group with
+ * persistent reconnect)
+ * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
+ * a new SSID
+ * @force_ssid_len: Length of $force_ssid buffer
+ * @pd_before_go_neg: Whether to send Provision Discovery prior to GO
+ * Negotiation as an interoperability workaround when initiating group
+ * formation
+ * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
+ * force_freq == 0)
* Returns: 0 on success, -1 on failure
*/
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);
+ 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);
/**
* p2p_authorize - Authorize P2P group formation (GO negotiation)
* @go_intent: Local GO intent value (1..15)
* @own_interface_addr: Intended interface address to use with the group
* @force_freq: The only allowed channel frequency in MHz or 0
- * @persistent_group: Whether to create a persistent group
+ * @persistent_group: Whether to create a persistent group (0 = no, 1 =
+ * persistent group without persistent reconnect, 2 = persistent group with
+ * persistent reconnect)
+ * @force_ssid: Forced SSID for the group if we become GO or %NULL to generate
+ * a new SSID
+ * @force_ssid_len: Length of $force_ssid buffer
+ * @pref_freq: Preferred operating frequency in MHz or 0 (this is only used if
+ * force_freq == 0)
* Returns: 0 on success, -1 on failure
*
* This is like p2p_connect(), but the actual group negotiation is not
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);
+ unsigned int force_freq, int persistent_group,
+ const u8 *force_ssid, size_t force_ssid_len,
+ unsigned int pref_freq);
/**
* p2p_reject - Reject peer device (explicitly block connection attempts)
* @peer_addr: MAC address of the peer P2P client
* @config_methods: WPS Config Methods value (only one bit set)
* @join: Whether this is used by a client joining an active group
+ * @force_freq: Forced TX frequency for the frame (mainly for the join case)
+ * @user_initiated_pd: Flag to indicate if initiated by user or not
* Returns: 0 on success, -1 on failure
*
* This function can be used to request a discovered P2P peer to display a PIN
* indicated with the p2p_config::prov_disc_resp() callback.
*/
int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr,
- u16 config_methods, int join);
+ u16 config_methods, int join, int force_freq,
+ int user_initiated_pd);
/**
* p2p_sd_request - Schedule a service discovery query
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 */
+
/**
* p2p_sd_cancel_request - Cancel a pending service discovery query
* @p2p: P2P module context from p2p_init()
* of the local services. This will increment the Service Update Indicator
* value which will be used in SD Request and Response frames.
*/
+#ifdef ANDROID_P2P
+void p2p_sd_service_update(struct p2p_data *p2p, int action);
+#else
void p2p_sd_service_update(struct p2p_data *p2p);
+#endif
enum p2p_invite_role {
*/
void p2p_group_formation_failed(struct p2p_data *p2p);
+/**
+ * p2p_get_provisioning_info - Get any stored provisioning info
+ * @p2p: P2P module context from p2p_init()
+ * @addr: Peer P2P Device Address
+ * Returns: WPS provisioning information (WPS config method) or 0 if no
+ * information is available
+ *
+ * This function is used to retrieve stored WPS provisioning info for the given
+ * peer.
+ */
+u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr);
+
+/**
+ * p2p_clear_provisioning_info - Clear any stored provisioning info
+ * @p2p: P2P module context from p2p_init()
+ * @iface_addr: Peer P2P Device Address
+ *
+ * This function is used to clear stored WPS provisioning info for the given
+ * peer.
+ */
+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: frame was not well-formed
+ * @P2P_PREQ_NOT_LISTEN: device isn't in listen state, frame ignored
+ * @P2P_PREQ_NOT_P2P: frame was not a P2P probe request
+ * @P2P_PREQ_P2P_NOT_PROCESSED: frame was P2P but wasn't processed
+ * @P2P_PREQ_P2P_PROCESSED: frame has been processed by P2P
+ */
+enum p2p_probe_req_status {
+ P2P_PREQ_MALFORMED,
+ P2P_PREQ_NOT_LISTEN,
+ P2P_PREQ_NOT_P2P,
+ P2P_PREQ_NOT_PROCESSED,
+ P2P_PREQ_PROCESSED
+};
+
+/**
* p2p_probe_req_rx - Report reception of a Probe Request frame
* @p2p: P2P module context from p2p_init()
* @addr: Source MAC address
+ * @dst: Destination MAC address if available or %NULL
+ * @bssid: BSSID if available or %NULL
* @ie: Information elements from the Probe Request frame body
* @ie_len: Length of ie buffer in octets
- * Returns: 0 to indicate the frame was not processed or 1 if it was
+ * Returns: value indicating the type and status of the probe request
*/
-int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
- size_t ie_len);
+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);
/**
* p2p_rx_action - Report received Action frame
* @p2p: P2P module context from p2p_init()
* @bssid: BSSID of the scan result
* @freq: Frequency of the channel on which the device was found in MHz
+ * @rx_time: Time when the result was received
* @level: Signal level (signal strength of the received Beacon/Probe Response
* frame)
* @ies: Pointer to IEs from the scan result
* start of a pending operation, e.g., to start a pending GO negotiation.
*/
int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
- int level, const u8 *ies, size_t ies_len);
+ struct os_time *rx_time, int level, const u8 *ies,
+ size_t ies_len);
/**
* p2p_scan_res_handled - Indicate end of scan results
struct p2p_group_config {
/**
* persistent_group - Whether the group is persistent
+ * 0 = not a persistent group
+ * 1 = persistent group without persistent reconnect
+ * 2 = persistent group with persistent reconnect
*/
int persistent_group;
unsigned int max_clients;
/**
+ * ssid - Group SSID
+ */
+ u8 ssid[32];
+
+ /**
+ * ssid_len - Length of SSID
+ */
+ size_t ssid_len;
+
+ /**
* cb_ctx - Context to use with callback functions
*/
void *cb_ctx;
*/
int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
const u8 *ie, size_t len);
-#ifdef ANDROID_BRCM_P2P_PATCH
-/**
- * p2p_group_get_dev_addr - Retreive the device address of an assocated P2P
- * client.
- * @group: P2P group context from p2p_group_init()
- * @addr: Interface address of the P2P client
- * Returns: P2P dev_addr on success, NULL on failure
- */
-u8 *p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);
-#endif /*ANDROID_BRCM_P2P_PATCH */
/**
* p2p_group_assoc_resp_ie - Build P2P IE for (re)association response
int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);
/**
+ * p2p_group_match_dev_id - Match P2P Device Address in group with requested device id
+ */
+int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p);
+
+/**
* p2p_group_go_discover - Send GO Discoverability Request to a group client
* @group: P2P group context from p2p_group_init()
* Returns: 0 on success (frame scheduled); -1 if client was not found
int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);
/**
+ * p2p_parse_dev_addr_in_p2p_ie - Parse P2P Device Address from a concatenated
+ * P2P IE
+ * @p2p_ie: P2P IE
+ * @dev_addr: Buffer for returning P2P Device Address
+ * Returns: 0 on success or -1 if P2P Device Address could not be parsed
+ */
+int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr);
+
+/**
+ * p2p_parse_dev_addr - Parse P2P Device Address from P2P IE(s)
+ * @ies: Information elements from scan results
+ * @ies_len: ies buffer length in octets
+ * @dev_addr: Buffer for returning P2P Device Address
+ * Returns: 0 on success or -1 if P2P Device Address could not be parsed
+ */
+int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr);
+
+/**
* p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame
* @p2p: P2P module context from p2p_init()
* @bssid: BSSID
* p2p_scan_ie - Build P2P IE for Probe Request
* @p2p: P2P module context from p2p_init()
* @ies: Buffer for writing P2P IE
+ * @dev_id: Device ID to search for or %NULL for any
+ */
+void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id);
+
+/**
+ * p2p_scan_ie_buf_len - Get maximum buffer length needed for p2p_scan_ie
+ * @p2p: P2P module context from p2p_init()
+ * Returns: Number of octets that p2p_scan_ie() may add to the buffer
*/
-void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies);
+size_t p2p_scan_ie_buf_len(struct p2p_data *p2p);
/**
* p2p_go_params - Generate random P2P group parameters
const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);
/**
- * p2p_get_peer_info - Get P2P peer information in text format
+ * p2p_get_peer_info - Get P2P peer information
* @p2p: P2P module context from p2p_init()
* @addr: P2P Device Address of the peer or %NULL to indicate the first peer
* @next: Whether to select the peer entry following the one indicated by addr
+ * Returns: Pointer to peer info or %NULL if not found
+ */
+const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
+ const u8 *addr, int next);
+
+/**
+ * p2p_get_peer_info_txt - Get internal P2P peer information in text format
+ * @info: Pointer to P2P peer info from p2p_get_peer_info()
* @buf: Buffer for returning text
* @buflen: Maximum buffer length
* Returns: Number of octets written to the buffer or -1 on failure
+ *
+ * Note: This information is internal to the P2P module and subject to change.
+ * As such, this should not really be used by external programs for purposes
+ * other than debugging.
+ */
+int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
+ char *buf, size_t buflen);
+
+/**
+ * p2p_peer_known - Check whether P2P peer is known
+ * @p2p: P2P module context from p2p_init()
+ * @addr: P2P Device Address of the peer
+ * Returns: 1 if the specified device is in the P2P peer table or 0 if not
*/
-int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
- char *buf, size_t buflen);
+int p2p_peer_known(struct p2p_data *p2p, const u8 *addr);
/**
* p2p_set_client_discoverability - Set client discoverability capability
void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);
/**
- * p2p_set_manageD_oper - Set managed P2P Device operations capability
+ * p2p_set_managed_oper - Set managed P2P Device operations capability
* @p2p: P2P module context from p2p_init()
* @enabled: Whether managed P2P Device operations will be enabled
*/
int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr);
-int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
- const u8 *ies, size_t ies_len);
-
/**
* p2p_set_intra_bss_dist - Set intra BSS distribution
* @p2p: P2P module context from p2p_init()
const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);
/**
+ * p2p_group_get_dev_addr - Get a P2P Device Address of a client in a group
+ * @group: P2P group context from p2p_group_init()
+ * @addr: P2P Interface Address of the client
+ * Returns: P2P Device Address of the client if found or %NULL if no match
+ * found
+ */
+const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr);
+
+/**
+ * p2p_group_is_client_connected - Check whether a specific client is connected
+ * @group: P2P group context from p2p_group_init()
+ * @addr: P2P Device Address of the client
+ * Returns: 1 if client is connected or 0 if not
+ */
+int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr);
+
+/**
* p2p_get_peer_found - Get P2P peer info structure of a found peer
* @p2p: P2P module context from p2p_init()
* @addr: P2P Device Address of the peer or %NULL to indicate the first peer
int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
int cfg_op_channel);
+/**
+ * p2p_set_pref_chan - Set P2P preferred channel list
+ * @p2p: P2P module context from p2p_init()
+ * @num_pref_chan: Number of entries in pref_chan list
+ * @pref_chan: Preferred channels or %NULL to remove preferences
+ * Returns: 0 on success, -1 on failure
+ */
+int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
+ const struct p2p_channel *pref_chan);
+
+/**
+ * p2p_in_progress - Check whether a P2P operation is progress
+ * @p2p: P2P module context from p2p_init()
+ * Returns: 0 if P2P module is idle or 1 if an operation is in progress
+ */
+int p2p_in_progress(struct p2p_data *p2p);
+
+#ifdef ANDROID_P2P
+/**
+ * p2p_search_in_progress - Check whether a P2P SEARCH is in progress
+ * @p2p: P2P module context from p2p_init()
+ * Returns: 0 if P2P module is idle or 1 if an operation is in progress
+ */
+int p2p_search_in_progress(struct p2p_data *p2p);
+
+/**
+ * p2p_search_pending - Check whether there is a deferred P2P SEARCH
+ * @p2p: P2P module context from p2p_init()
+ * Returns: 0 if there is no deferred P2P search or 1 if there is one
+ */
+int p2p_search_pending(struct p2p_data *p2p);
+#endif
+
+/**
+ * p2p_other_scan_completed - Notify completion of non-P2P scan
+ * @p2p: P2P module context from p2p_init()
+ * Returns: 0 if P2P module is idle or 1 if an operation was started
+ */
+int p2p_other_scan_completed(struct p2p_data *p2p);
+
+const char * p2p_wps_method_text(enum p2p_wps_method method);
+
+/**
+ * p2p_set_config_timeout - Set local config timeouts
+ * @p2p: P2P module context from p2p_init()
+ * @go_timeout: Time in 10 ms units it takes to start the GO mode
+ * @client_timeout: Time in 10 ms units it takes to start the client mode
+ */
+void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
+ u8 client_timeout);
+
+void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay);
+
+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);
+
+/**
+ * p2p_set_disc_int - Set min/max discoverable interval for p2p_find
+ * @p2p: P2P module context from p2p_init()
+ * @min_disc_int: minDiscoverableInterval (in units of 100 TU); default 1
+ * @max_disc_int: maxDiscoverableInterval (in units of 100 TU); default 3
+ * @max_disc_tu: Maximum number of TUs (1.024 ms) for discoverable interval; or
+ * -1 not to limit
+ * Returns: 0 on success, or -1 on failure
+ *
+ * This function can be used to configure minDiscoverableInterval and
+ * maxDiscoverableInterval parameters for the Listen state during device
+ * discovery (p2p_find). A random number of 100 TU units is picked for each
+ * Listen state iteration from [min_disc_int,max_disc_int] range.
+ *
+ * max_disc_tu can be used to futher limit the discoverable duration. However,
+ * it should be noted that use of this parameter is not recommended since it
+ * would not be compliant with the P2P specification.
+ */
+int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
+ int max_disc_tu);
+
#endif /* P2P_H */
OSDN Git Service
