/*
* 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.
*/
#ifndef P2P_H
#define P2P_H
/**
* P2P_MAX_REG_CLASSES - Maximum number of regulatory classes
*/
#define P2P_MAX_REG_CLASSES 10
/**
* P2P_MAX_REG_CLASS_CHANNELS - Maximum number of channels per regulatory class
*/
#define P2P_MAX_REG_CLASS_CHANNELS 20
/**
* struct p2p_channels - List of supported channels
*/
struct p2p_channels {
/**
* struct p2p_reg_class - Supported regulatory class
*/
struct p2p_reg_class {
/**
* reg_class - Regulatory class (IEEE 802.11-2007, Annex J)
*/
u8 reg_class;
/**
* channel - Supported channels
*/
u8 channel[P2P_MAX_REG_CLASS_CHANNELS];
/**
* channels - Number of channel entries in use
*/
size_t channels;
} reg_class[P2P_MAX_REG_CLASSES];
/**
* reg_classes - Number of reg_class entries in use
*/
size_t reg_classes;
};
enum p2p_wps_method {
WPS_NOT_READY, WPS_PIN_LABEL, WPS_PIN_DISPLAY, WPS_PIN_KEYPAD, WPS_PBC
};
/**
* struct p2p_go_neg_results - P2P Group Owner Negotiation results
*/
struct p2p_go_neg_results {
/**
* status - Negotiation result (Status Code)
*
* 0 (P2P_SC_SUCCESS) indicates success. Non-zero values indicate
* failed negotiation.
*/
int status;
/**
* role_go - Whether local end is Group Owner
*/
int role_go;
/**
* freq - Frequency of the group operational channel in MHz
*/
int freq;
/**
* ssid - SSID of the group
*/
u8 ssid[32];
/**
* ssid_len - Length of SSID in octets
*/
size_t ssid_len;
/**
* passphrase - WPA2-Personal passphrase for the group (GO only)
*/
char passphrase[64];
/**
* peer_device_addr - P2P Device Address of the peer
*/
u8 peer_device_addr[ETH_ALEN];
/**
* peer_interface_addr - P2P Interface Address of the peer
*/
u8 peer_interface_addr[ETH_ALEN];
/**
* wps_method - WPS method to be used during provisioning
*/
enum p2p_wps_method wps_method;
#define P2P_MAX_CHANNELS 50
/**
* freq_list - Zero-terminated list of possible operational channels
*/
int freq_list[P2P_MAX_CHANNELS];
/**
* persistent_group - Whether the group should be made persistent
*/
int persistent_group;
/**
* peer_config_timeout - Peer configuration timeout (in 10 msec units)
*/
unsigned int peer_config_timeout;
};
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 - P2P peer information
*/
struct p2p_peer_info {
/**
* p2p_device_addr - P2P Device Address of the peer
*/
u8 p2p_device_addr[ETH_ALEN];
/**
* pri_dev_type - Primary Device Type
*/
u8 pri_dev_type[8];
/**
* device_name - Device Name (0..32 octets encoded in UTF-8)
*/
char device_name[33];
/**
* manufacturer - Manufacturer (0..64 octets encoded in UTF-8)
*/
char manufacturer[65];
/**
* model_name - Model Name (0..32 octets encoded in UTF-8)
*/
char model_name[33];
/**
* model_number - Model Number (0..32 octets encoded in UTF-8)
*/
char model_number[33];
/**
* serial_number - Serial Number (0..32 octets encoded in UTF-8)
*/
char serial_number[33];
/**
* level - Signal level
*/
int level;
/**
* config_methods - WPS Configuration Methods
*/
u16 config_methods;
/**
* dev_capab - Device Capabilities
*/
u8 dev_capab;
/**
* group_capab - Group Capabilities
*/
u8 group_capab;
/**
* wps_sec_dev_type_list - WPS secondary device type list
*
* This list includes from 0 to 16 Secondary Device Types as indicated
* by wps_sec_dev_type_list_len (8 * number of types).
*/
u8 wps_sec_dev_type_list[128];
/**
* wps_sec_dev_type_list_len - Length of secondary device type list
*/
size_t wps_sec_dev_type_list_len;
struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
};
enum p2p_prov_disc_status {
P2P_PROV_DISC_SUCCESS,
P2P_PROV_DISC_TIMEOUT,
P2P_PROV_DISC_REJECTED,
};
/**
* struct p2p_config - P2P configuration
*
* This configuration is provided to the P2P module during initialization with
* p2p_init().
*/
struct p2p_config {
/**
* country - Country code to use in P2P operations
*/
char country[3];
/**
* reg_class - Regulatory class for own listen channel
*/
u8 reg_class;
/**
* channel - Own listen channel
*/
u8 channel;
/**
* Regulatory class for own operational channel
*/
u8 op_reg_class;
/**
* op_channel - Own operational channel
*/
u8 op_channel;
/**
* cfg_op_channel - Whether op_channel is hardcoded in configuration
*/
u8 cfg_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;
/**
* pri_dev_type - Primary Device Type (see WPS)
*/
u8 pri_dev_type[8];
/**
* P2P_SEC_DEVICE_TYPES - Maximum number of secondary device types
*/
#define P2P_SEC_DEVICE_TYPES 5
/**
* sec_dev_type - Optional secondary device types
*/
u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
/**
* num_sec_dev_types - Number of sec_dev_type entries
*/
size_t num_sec_dev_types;
/**
* dev_addr - P2P Device Address
*/
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
*/
char *dev_name;
char *manufacturer;
char *model_name;
char *model_number;
char *serial_number;
u8 uuid[16];
u16 config_methods;
/**
* concurrent_operations - Whether concurrent operations are supported
*/
int concurrent_operations;
/**
* max_peers - Maximum number of discovered peers to remember
*
* If more peers are discovered, older entries will be removed to make
* room for the new ones.
*/
size_t max_peers;
/**
* p2p_intra_bss - Intra BSS communication is supported
*/
int p2p_intra_bss;
/**
* ssid_postfix - Postfix data to add to the SSID
*
* This data will be added to the end of the SSID after the
* DIRECT-<random two octets> prefix.
*/
u8 ssid_postfix[32 - 9];
/**
* ssid_postfix_len - Length of the ssid_postfix data
*/
size_t ssid_postfix_len;
/**
* msg_ctx - Context to use with wpa_msg() calls
*/
void *msg_ctx;
/**
* cb_ctx - Context to use with callback functions
*/
void *cb_ctx;
/* Callbacks to request lower layer driver operations */
/**
* p2p_scan - Request a P2P scan/search
* @ctx: Callback context from cb_ctx
* @type: Scan type
* @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
* 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.
* @P2P_SCAN_SOCIAL_PLUS_ONE request scan of all the social channels
* plus one extra channel specified by freq.
*
* The full scan is used for the initial scan to find group owners from
* all. The other types are used during search phase scan of the social
* channels (with potential variation if the Listen channel of the
* target peer is known or if other channels are scanned in steps).
*
* The scan results are returned after this call by calling
* p2p_scan_res_handler() for each scan result that has a P2P IE and
* then calling p2p_scan_res_handled() to indicate that all scan
* results have been indicated.
*/
int (*p2p_scan)(void *ctx, enum p2p_scan_type type, int freq,
unsigned int num_req_dev_types,
const u8 *req_dev_types);
/**
* send_probe_resp - Transmit a Probe Response frame
* @ctx: Callback context from cb_ctx
* @buf: Probe Response frame (including the header and body)
* Returns: 0 on success, -1 on failure
*
* This function is used to reply to Probe Request frames that were
* indicated with a call to p2p_probe_req_rx(). The response is to be
* sent on the same channel or to be dropped if the driver is not
* anymore listening to Probe Request frames.
*
* Alternatively, the responsibility for building the Probe Response
* frames in Listen state may be in another system component in which
* case this function need to be implemented (i.e., the function
* pointer can be %NULL). The WPS and P2P IEs to be added for Probe
* Response frames in such a case are available from the
* start_listen() callback. It should be noted that the received Probe
* Request frames must be indicated by calling p2p_probe_req_rx() even
* if this send_probe_resp() is not used.
*/
int (*send_probe_resp)(void *ctx, const struct wpabuf *buf);
/**
* send_action - Transmit an Action frame
* @ctx: Callback context from cb_ctx
* @freq: Frequency in MHz for the channel on which to transmit
* @dst: Destination MAC address (Address 1)
* @src: Source MAC address (Address 2)
* @bssid: BSSID (Address 3)
* @buf: Frame body (starting from Category field)
* @len: Length of buf in octets
* @wait_time: How many msec to wait for a response frame
* Returns: 0 on success, -1 on failure
*
* The Action frame may not be transmitted immediately and the status
* of the transmission must be reported by calling
* p2p_send_action_cb() once the frame has either been transmitted or
* it has been dropped due to excessive retries or other failure to
* transmit.
*/
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);
/**
* send_action_done - Notify that Action frame sequence was completed
* @ctx: Callback context from cb_ctx
*
* This function is called when the Action frame sequence that was
* started with send_action() has been completed, i.e., when there is
* no need to wait for a response from the destination peer anymore.
*/
void (*send_action_done)(void *ctx);
/**
* start_listen - Start Listen state
* @ctx: Callback context from cb_ctx
* @freq: Frequency of the listen channel in MHz
* @duration: Duration for the Listen state in milliseconds
* @probe_resp_ie: IE(s) to be added to Probe Response frames
* Returns: 0 on success, -1 on failure
*
* This Listen state may not start immediately since the driver may
* have other pending operations to complete first. Once the Listen
* state has started, p2p_listen_cb() must be called to notify the P2P
* module. Once the Listen state is stopped, p2p_listen_end() must be
* called to notify the P2P module that the driver is not in the Listen
* state anymore.
*
* If the send_probe_resp() is not used for generating the response,
* the IEs from probe_resp_ie need to be added to the end of the Probe
* Response frame body. If send_probe_resp() is used, the probe_resp_ie
* information can be ignored.
*/
int (*start_listen)(void *ctx, unsigned int freq,
unsigned int duration,
const struct wpabuf *probe_resp_ie);
/**
* stop_listen - Stop Listen state
* @ctx: Callback context from cb_ctx
*
* This callback can be used to stop a Listen state operation that was
* previously requested with start_listen().
*/
void (*stop_listen)(void *ctx);
/**
* get_noa - Get current Notice of Absence attribute payload
* @ctx: Callback context from cb_ctx
* @interface_addr: P2P Interface Address of the GO
* @buf: Buffer for returning NoA
* @buf_len: Buffer length in octets
* Returns: Number of octets used in buf, 0 to indicate no NoA is being
* advertized, or -1 on failure
*
* This function is used to fetch the current Notice of Absence
* attribute value from GO.
*/
int (*get_noa)(void *ctx, const u8 *interface_addr, u8 *buf,
size_t buf_len);
/* Callbacks to notify events to upper layer management entity */
/**
* dev_found - Notification of a found P2P Device
* @ctx: Callback context from cb_ctx
* @addr: Source address of the message triggering this notification
* @info: P2P peer information
* @new_device: Inform if the peer is newly found
*
* This callback is used to notify that a new P2P Device has been
* found. This may happen, e.g., during Search state based on scan
* results or during Listen state based on receive Probe Request and
* Group Owner Negotiation Request.
*/
void (*dev_found)(void *ctx, const u8 *addr,
const struct p2p_peer_info *info,
int new_device);
/**
* dev_lost - Notification of a lost P2P Device
* @ctx: Callback context from cb_ctx
* @dev_addr: P2P Device Address of the lost P2P Device
*
* This callback is used to notify that a P2P Device has been deleted.
*/
void (*dev_lost)(void *ctx, const u8 *dev_addr);
/**
* go_neg_req_rx - Notification of a receive GO Negotiation Request
* @ctx: Callback context from cb_ctx
* @src: Source address of the message triggering this notification
* @dev_passwd_id: WPS Device Password ID
*
* This callback is used to notify that a P2P Device is requesting
* group owner negotiation with us, but we do not have all the
* necessary information to start GO Negotiation. This indicates that
* the local user has not authorized the connection yet by providing a
* PIN or PBC button press. This information can be provided with a
* call to p2p_connect().
*/
void (*go_neg_req_rx)(void *ctx, const u8 *src, u16 dev_passwd_id);
/**
* go_neg_completed - Notification of GO Negotiation results
* @ctx: Callback context from cb_ctx
* @res: GO Negotiation results
*
* This callback is used to notify that Group Owner Negotiation has
* been completed. Non-zero struct p2p_go_neg_results::status indicates
* failed negotiation. In case of success, this function is responsible
* for creating a new group interface (or using the existing interface
* depending on driver features), setting up the group interface in
* proper mode based on struct p2p_go_neg_results::role_go and
* initializing WPS provisioning either as a Registrar (if GO) or as an
* Enrollee. Successful WPS provisioning must be indicated by calling
* p2p_wps_success_cb(). The callee is responsible for timing out group
* formation if WPS provisioning cannot be completed successfully
* within 15 seconds.
*/
void (*go_neg_completed)(void *ctx, struct p2p_go_neg_results *res);
/**
* sd_request - Callback on Service Discovery Request
* @ctx: Callback context from cb_ctx
* @freq: Frequency (in MHz) of the channel
* @sa: Source address of the request
* @dialog_token: Dialog token
* @update_indic: Service Update Indicator from the source of request
* @tlvs: P2P Service Request TLV(s)
* @tlvs_len: Length of tlvs buffer in octets
*
* This callback is used to indicate reception of a service discovery
* request. Response to the query must be indicated by calling
* p2p_sd_response() with the context information from the arguments to
* this callback function.
*
* This callback handler can be set to %NULL to indicate that service
* discovery is not supported.
*/
void (*sd_request)(void *ctx, int freq, const u8 *sa, u8 dialog_token,
u16 update_indic, const u8 *tlvs, size_t tlvs_len);
/**
* sd_response - Callback on Service Discovery Response
* @ctx: Callback context from cb_ctx
* @sa: Source address of the request
* @update_indic: Service Update Indicator from the source of response
* @tlvs: P2P Service Response TLV(s)
* @tlvs_len: Length of tlvs buffer in octets
*
* This callback is used to indicate reception of a service discovery
* response. This callback handler can be set to %NULL if no service
* discovery requests are used. The information provided with this call
* is replies to the queries scheduled with p2p_sd_request().
*/
void (*sd_response)(void *ctx, const u8 *sa, u16 update_indic,
const u8 *tlvs, size_t tlvs_len);
/**
* prov_disc_req - Callback on Provisiong Discovery Request
* @ctx: Callback context from cb_ctx
* @peer: Source address of the request
* @config_methods: Requested WPS Config Method
* @dev_addr: P2P Device Address of the found P2P Device
* @pri_dev_type: Primary Device Type
* @dev_name: Device Name
* @supp_config_methods: Supported configuration Methods
* @dev_capab: Device Capabilities
* @group_capab: Group Capabilities
*
* 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);
/**
* prov_disc_resp - Callback on Provisiong Discovery Response
* @ctx: Callback context from cb_ctx
* @peer: Source address of the response
* @config_methods: Value from p2p_prov_disc_req() or 0 on failure
*
* This callback is used to indicate reception of a Provision Discovery
* Response frame for a pending request scheduled with
* p2p_prov_disc_req(). This callback handler can be set to %NULL if
* provision discovery is not used.
*/
void (*prov_disc_resp)(void *ctx, const u8 *peer, u16 config_methods);
/**
* prov_disc_fail - Callback on Provision Discovery failure
* @ctx: Callback context from cb_ctx
* @peer: Source address of the response
* @status: Cause of failure, will not be %P2P_PROV_DISC_SUCCESS
*
* This callback is used to indicate either a failure or no response
* to an earlier provision discovery request.
*
* This callback handler can be set to %NULL if provision discovery
* is not used or failures do not need to be indicated.
*/
void (*prov_disc_fail)(void *ctx, const u8 *peer,
enum p2p_prov_disc_status status);
/**
* invitation_process - Optional callback for processing Invitations
* @ctx: Callback context from cb_ctx
* @sa: Source address of the Invitation Request
* @bssid: P2P Group BSSID from the request or %NULL if not included
* @go_dev_addr: GO Device Address from P2P Group ID
* @ssid: SSID from P2P Group ID
* @ssid_len: Length of ssid buffer in octets
* @go: Variable for returning whether the local end is GO in the group
* @group_bssid: Buffer for returning P2P Group BSSID (if local end GO)
* @force_freq: Variable for returning forced frequency for the group
* @persistent_group: Whether this is an invitation to reinvoke a
* persistent group (instead of invitation to join an active
* group)
* Returns: Status code (P2P_SC_*)
*
* This optional callback can be used to implement persistent reconnect
* by allowing automatic restarting of persistent groups without user
* interaction. If this callback is not implemented (i.e., is %NULL),
* the received Invitation Request frames are replied with
* %P2P_SC_REQ_RECEIVED status and indicated to upper layer with the
* invitation_result() callback.
*
* If the requested parameters are acceptable and the group is known,
* %P2P_SC_SUCCESS may be returned. If the requested group is unknown,
* %P2P_SC_FAIL_UNKNOWN_GROUP should be returned. %P2P_SC_REQ_RECEIVED
* can be returned if there is not enough data to provide immediate
* response, i.e., if some sort of user interaction is needed. The
* invitation_received() callback will be called in that case
* immediately after this call.
*/
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);
/**
* invitation_received - Callback on Invitation Request RX
* @ctx: Callback context from cb_ctx
* @sa: Source address of the Invitation Request
* @bssid: P2P Group BSSID or %NULL if not received
* @ssid: SSID of the group
* @ssid_len: Length of ssid in octets
* @go_dev_addr: GO Device Address
* @status: Response Status
* @op_freq: Operational frequency for the group
*
* This callback is used to indicate sending of an Invitation Response
* for a received Invitation Request. If status == 0 (success), the
* upper layer code is responsible for starting the group. status == 1
* indicates need to get user authorization for the group. Other status
* values indicate that the invitation request was rejected.
*/
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);
/**
* invitation_result - Callback on Invitation result
* @ctx: Callback context from cb_ctx
* @status: Negotiation result (Status Code)
* @bssid: P2P Group BSSID or %NULL if not received
*
* This callback is used to indicate result of an Invitation procedure
* started with a call to p2p_invite(). The indicated status code is
* the value received from the peer in Invitation Response with 0
* (P2P_SC_SUCCESS) indicating success or -1 to indicate a timeout or a
* local failure in transmitting the Invitation Request.
*/
void (*invitation_result)(void *ctx, int status, const u8 *bssid);
};
/* P2P module initialization/deinitialization */
/**
* p2p_init - Initialize P2P module
* @cfg: P2P module configuration
* Returns: Pointer to private data or %NULL on failure
*
* This function is used to initialize global P2P module context (one per
* device). The P2P module will keep a copy of the configuration data, so the
* caller does not need to maintain this structure. However, the callback
* functions and the context parameters to them must be kept available until
* the P2P module is deinitialized with p2p_deinit().
*/
struct p2p_data * p2p_init(const struct p2p_config *cfg);
/**
* p2p_deinit - Deinitialize P2P module
* @p2p: P2P module context from p2p_init()
*/
void p2p_deinit(struct p2p_data *p2p);
/**
* p2p_flush - Flush P2P module state
* @p2p: P2P module context from p2p_init()
*
* This command removes the P2P module state like peer device entries.
*/
void p2p_flush(struct p2p_data *p2p);
/**
* p2p_unauthorize - Unauthorize the specified peer device
* @p2p: P2P module context from p2p_init()
* @addr: P2P peer entry to be unauthorized
* Returns: 0 on success, -1 on failure
*
* This command removes any connection authorization from the specified P2P
* peer device address. This can be used, e.g., to cancel effect of a previous
* p2p_authorize() or p2p_connect() call that has not yet resulted in completed
* GO Negotiation.
*/
int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr);
/**
* p2p_set_dev_name - Set device name
* @p2p: P2P module context from p2p_init()
* Returns: 0 on success, -1 on failure
*
* This function can be used to update the P2P module configuration with
* information that was not available at the time of the p2p_init() call.
*/
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);
/**
* p2p_set_pri_dev_type - Set primary device type
* @p2p: P2P module context from p2p_init()
* Returns: 0 on success, -1 on failure
*
* This function can be used to update the P2P module configuration with
* information that was not available at the time of the p2p_init() call.
*/
int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type);
/**
* p2p_set_sec_dev_types - Set secondary device types
* @p2p: P2P module context from p2p_init()
* Returns: 0 on success, -1 on failure
*
* This function can be used to update the P2P module configuration with
* information that was not available at the time of the p2p_init() call.
*/
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
};
/**
* p2p_find - Start P2P Find (Device Discovery)
* @p2p: P2P module context from p2p_init()
* @timeout: Timeout for find operation in seconds or 0 for no timeout
* @type: Device Discovery type
* @num_req_dev_types: Number of requested device types
* @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.
* 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);
/**
* p2p_stop_find - Stop P2P Find (Device Discovery)
* @p2p: P2P module context from p2p_init()
*/
void p2p_stop_find(struct p2p_data *p2p);
/**
* p2p_stop_find_for_freq - Stop P2P Find for next oper on specific freq
* @p2p: P2P module context from p2p_init()
* @freq: Frequency in MHz for next operation
*
* This is like p2p_stop_find(), but Listen state is not stopped if we are
* already on the same frequency.
*/
void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq);
/**
* p2p_listen - Start P2P Listen state for specified duration
* @p2p: P2P module context from p2p_init()
* @timeout: Listen state duration in milliseconds
* Returns: 0 on success, -1 on failure
*
* This function can be used to request the P2P module to keep the device
* discoverable on the listen channel for an extended set of time. At least in
* its current form, this is mainly used for testing purposes and may not be of
* much use for normal P2P operations.
*/
int p2p_listen(struct p2p_data *p2p, unsigned int timeout);
/**
* p2p_connect - Start P2P group formation (GO negotiation)
* @p2p: P2P module context from p2p_init()
* @peer_addr: MAC address of the peer P2P client
* @wps_method: WPS method to be used in provisioning
* @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
* 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);
/**
* p2p_authorize - Authorize P2P group formation (GO negotiation)
* @p2p: P2P module context from p2p_init()
* @peer_addr: MAC address of the peer P2P client
* @wps_method: WPS method to be used in provisioning
* @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
* Returns: 0 on success, -1 on failure
*
* This is like p2p_connect(), but the actual group negotiation is not
* initiated automatically, i.e., the other end is expected to do that.
*/
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);
/**
* p2p_reject - Reject peer device (explicitly block connection attempts)
* @p2p: P2P module context from p2p_init()
* @peer_addr: MAC address of the peer P2P client
* Returns: 0 on success, -1 on failure
*/
int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr);
/**
* p2p_prov_disc_req - Send Provision Discovery Request
* @p2p: P2P module context from p2p_init()
* @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
* Returns: 0 on success, -1 on failure
*
* This function can be used to request a discovered P2P peer to display a PIN
* (config_methods = WPS_CONFIG_DISPLAY) or be prepared to enter a PIN from us
* (config_methods = WPS_CONFIG_KEYPAD). The Provision Discovery Request frame
* is transmitted once immediately and if no response is received, the frame
* will be sent again whenever the target device is discovered during device
* dsicovery (start with a p2p_find() call). Response from the peer is
* 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);
/**
* p2p_sd_request - Schedule a service discovery query
* @p2p: P2P module context from p2p_init()
* @dst: Destination peer or %NULL to apply for all peers
* @tlvs: P2P Service Query TLV(s)
* Returns: Reference to the query or %NULL on failure
*
* Response to the query is indicated with the p2p_config::sd_response()
* callback.
*/
void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst,
const struct wpabuf *tlvs);
/**
* p2p_sd_cancel_request - Cancel a pending service discovery query
* @p2p: P2P module context from p2p_init()
* @req: Query reference from p2p_sd_request()
* Returns: 0 if request for cancelled; -1 if not found
*/
int p2p_sd_cancel_request(struct p2p_data *p2p, void *req);
/**
* p2p_sd_response - Send response to a service discovery query
* @p2p: P2P module context from p2p_init()
* @freq: Frequency from p2p_config::sd_request() callback
* @dst: Destination address from p2p_config::sd_request() callback
* @dialog_token: Dialog token from p2p_config::sd_request() callback
* @resp_tlvs: P2P Service Response TLV(s)
*
* This function is called as a response to the request indicated with
* p2p_config::sd_request() callback.
*/
void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
u8 dialog_token, const struct wpabuf *resp_tlvs);
/**
* p2p_sd_service_update - Indicate a change in local services
* @p2p: P2P module context from p2p_init()
*
* This function needs to be called whenever there is a change in availability
* of the local services. This will increment the Service Update Indicator
* value which will be used in SD Request and Response frames.
*/
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
};
/**
* p2p_invite - Invite a P2P Device into a group
* @p2p: P2P module context from p2p_init()
* @peer: Device Address of the peer P2P Device
* @role: Local role in the group
* @bssid: Group BSSID or %NULL if not known
* @ssid: Group SSID
* @ssid_len: Length of ssid in octets
* @force_freq: The only allowed channel frequency in MHz or 0
* @go_dev_addr: Forced GO Device Address or %NULL if none
* @persistent_group: Whether this is to reinvoke a persistent group
* Returns: 0 on success, -1 on failure
*/
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);
/**
* p2p_presence_req - Request GO presence
* @p2p: P2P module context from p2p_init()
* @go_interface_addr: GO P2P Interface Address
* @own_interface_addr: Own P2P Interface Address for this group
* @freq: Group operating frequence (in MHz)
* @duration1: Preferred presence duration in microseconds
* @interval1: Preferred presence interval in microseconds
* @duration2: Acceptable presence duration in microseconds
* @interval2: Acceptable presence interval in microseconds
* Returns: 0 on success, -1 on failure
*
* If both duration and interval values are zero, the parameter pair is not
* specified (i.e., to remove Presence Request, use duration1 = interval1 = 0).
*/
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);
/**
* p2p_ext_listen - Set Extended Listen Timing
* @p2p: P2P module context from p2p_init()
* @freq: Group operating frequence (in MHz)
* @period: Availability period in milliseconds (1-65535; 0 to disable)
* @interval: Availability interval in milliseconds (1-65535; 0 to disable)
* Returns: 0 on success, -1 on failure
*
* This function can be used to enable or disable (period = interval = 0)
* Extended Listen Timing. When enabled, the P2P Device will become
* discoverable (go into Listen State) every @interval milliseconds for at
* least @period milliseconds.
*/
int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
unsigned int interval);
/* Event notifications from upper layer management operations */
/**
* p2p_wps_success_cb - Report successfully completed WPS provisioning
* @p2p: P2P module context from p2p_init()
* @mac_addr: Peer address
*
* This function is used to report successfully completed WPS provisioning
* during group formation in both GO/Registrar and client/Enrollee roles.
*/
void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr);
/**
* p2p_group_formation_failed - Report failed WPS provisioning
* @p2p: P2P module context from p2p_init()
*
* This function is used to report failed group formation. This can happen
* either due to failed WPS provisioning or due to 15 second timeout during
* the provisioning phase.
*/
void p2p_group_formation_failed(struct p2p_data *p2p);
/* Event notifications from lower layer driver operations */
/**
* p2p_probe_req_rx - Report reception of a Probe Request frame
* @p2p: P2P module context from p2p_init()
* @addr: Source MAC address
* @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
*/
int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
size_t ie_len);
/**
* p2p_rx_action - Report received Action frame
* @p2p: P2P module context from p2p_init()
* @da: Destination address of the received Action frame
* @sa: Source address of the received Action frame
* @bssid: Address 3 of the received Action frame
* @category: Category of the received Action frame
* @data: Action frame body after the Category field
* @len: Length of the data buffer in octets
* @freq: Frequency (in MHz) on which the frame was received
*/
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);
/**
* p2p_scan_res_handler - Indicate a P2P scan results
* @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
* @level: Signal level (signal strength of the received Beacon/Probe Response
* frame)
* @ies: Pointer to IEs from the scan result
* @ies_len: Length of the ies buffer
* Returns: 0 to continue or 1 to stop scan result indication
*
* This function is called to indicate a scan result entry with P2P IE from a
* scan requested with struct p2p_config::p2p_scan(). This can be called during
* the actual scan process (i.e., whenever a new device is found) or as a
* sequence of calls after the full scan has been completed. The former option
* can result in optimized operations, but may not be supported by all
* driver/firmware designs. The ies buffer need to include at least the P2P IE,
* but it is recommended to include all IEs received from the device. The
* caller does not need to check that the IEs contain a P2P IE before calling
* this function since frames will be filtered internally if needed.
*
* This function will return 1 if it wants to stop scan result iteration (and
* scan in general if it is still in progress). This is used to allow faster
* 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);
/**
* p2p_scan_res_handled - Indicate end of scan results
* @p2p: P2P module context from p2p_init()
*
* This function is called to indicate that all P2P scan results from a scan
* have been reported with zero or more calls to p2p_scan_res_handler(). This
* function must be called as a response to successful
* struct p2p_config::p2p_scan() call if none of the p2p_scan_res_handler()
* calls stopped iteration.
*/
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 */
};
/**
* p2p_send_action_cb - Notify TX status of an Action frame
* @p2p: P2P module context from p2p_init()
* @freq: Channel frequency in MHz
* @dst: Destination MAC address (Address 1)
* @src: Source MAC address (Address 2)
* @bssid: BSSID (Address 3)
* @result: Result of the transmission attempt
*
* This function is used to indicate the result of an Action frame transmission
* that was requested with struct p2p_config::send_action() callback.
*/
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);
/**
* p2p_listen_cb - Indicate the start of a requested Listen state
* @p2p: P2P module context from p2p_init()
* @freq: Listen channel frequency in MHz
* @duration: Duration for the Listen state in milliseconds
*
* This function is used to indicate that a Listen state requested with
* struct p2p_config::start_listen() callback has started.
*/
void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
unsigned int duration);
/**
* p2p_listen_end - Indicate the end of a requested Listen state
* @p2p: P2P module context from p2p_init()
* @freq: Listen channel frequency in MHz
* Returns: 0 if no operations were started, 1 if an operation was started
*
* This function is used to indicate that a Listen state requested with
* struct p2p_config::start_listen() callback has ended.
*/
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 - P2P group configuration
*
* This configuration is provided to the P2P module during initialization of
* the per-group information with p2p_group_init().
*/
struct p2p_group_config {
/**
* persistent_group - Whether the group is persistent
*/
int persistent_group;
/**
* interface_addr - P2P Interface Address of the group
*/
u8 interface_addr[ETH_ALEN];
/**
* max_clients - Maximum number of clients in the group
*/
unsigned int max_clients;
/**
* cb_ctx - Context to use with callback functions
*/
void *cb_ctx;
/**
* ie_update - Notification of IE update
* @ctx: Callback context from cb_ctx
* @beacon_ies: P2P IE for Beacon frames or %NULL if no change
* @proberesp_ies: P2P Ie for Probe Response frames
*
* P2P module uses this callback function to notify whenever the P2P IE
* in Beacon or Probe Response frames should be updated based on group
* events.
*
* The callee is responsible for freeing the returned buffer(s) with
* wpabuf_free().
*/
void (*ie_update)(void *ctx, struct wpabuf *beacon_ies,
struct wpabuf *proberesp_ies);
/**
* idle_update - Notification of changes in group idle state
* @ctx: Callback context from cb_ctx
* @idle: Whether the group is idle (no associated stations)
*/
void (*idle_update)(void *ctx, int idle);
};
/**
* p2p_group_init - Initialize P2P group
* @p2p: P2P module context from p2p_init()
* @config: P2P group configuration (will be freed by p2p_group_deinit())
* Returns: Pointer to private data or %NULL on failure
*
* This function is used to initialize per-group P2P module context. Currently,
* this is only used to manage GO functionality and P2P clients do not need to
* create an instance of this per-group information.
*/
struct p2p_group * p2p_group_init(struct p2p_data *p2p,
struct p2p_group_config *config);
/**
* p2p_group_deinit - Deinitialize P2P group
* @group: P2P group context from p2p_group_init()
*/
void p2p_group_deinit(struct p2p_group *group);
/**
* p2p_group_notif_assoc - Notification of P2P client association with GO
* @group: P2P group context from p2p_group_init()
* @addr: Interface address of the P2P client
* @ie: IEs from the (Re)association Request frame
* @len: Length of the ie buffer in octets
* Returns: 0 on success, -1 on failure
*/
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
* @group: P2P group context from p2p_group_init()
* @status: Status value (P2P_SC_SUCCESS if association succeeded)
* Returns: P2P IE for (Re)association Response or %NULL on failure
*
* The caller is responsible for freeing the returned buffer with
* wpabuf_free().
*/
struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status);
/**
* p2p_group_notif_disassoc - Notification of P2P client disassociation from GO
* @group: P2P group context from p2p_group_init()
* @addr: Interface address of the P2P client
*/
void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr);
/**
* p2p_group_notif_formation_done - Notification of completed group formation
* @group: P2P group context from p2p_group_init()
*/
void p2p_group_notif_formation_done(struct p2p_group *group);
/**
* p2p_group_notif_noa - Notification of NoA change
* @group: P2P group context from p2p_group_init()
* @noa: Notice of Absence attribute payload, %NULL if none
* @noa_len: Length of noa buffer in octets
* Returns: 0 on success, -1 on failure
*
* Notify the P2P group management about a new NoA contents. This will be
* inserted into the P2P IEs in Beacon and Probe Response frames with rest of
* the group information.
*/
int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
size_t noa_len);
/**
* p2p_group_match_dev_type - Match device types in group with requested type
* @group: P2P group context from p2p_group_init()
* @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
* Returns: 1 on match, 0 on mismatch
*
* This function can be used to match the Requested Device Type attribute in
* WPS IE with the device types of a group member for deciding whether a GO
* should reply to a Probe Request frame. Match will be reported if the WPS IE
* is not requested any specific device type.
*/
int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps);
/**
* 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_group_go_discover(struct p2p_group *group, const u8 *dev_id,
const u8 *searching_dev, int rx_freq);
/* Generic helper functions */
/**
* p2p_ie_text - Build text format description of P2P IE
* @p2p_ie: P2P IE
* @buf: Buffer for returning text
* @end: Pointer to the end of the buf area
* Returns: Number of octets written to the buffer or -1 on failure
*
* This function can be used to parse P2P IE contents into text format
* field=value lines.
*/
int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end);
/**
* p2p_scan_result_text - Build text format description of P2P IE
* @ies: Information elements from scan results
* @ies_len: ies buffer length in octets
* @buf: Buffer for returning text
* @end: Pointer to the end of the buf area
* Returns: Number of octets written to the buffer or -1 on failure
*
* This function can be used to parse P2P IE contents into text format
* field=value lines.
*/
int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end);
/**
* p2p_assoc_req_ie - Build P2P IE for (Re)Association Request frame
* @p2p: P2P module context from p2p_init()
* @bssid: BSSID
* @buf: Buffer for writing the P2P IE
* @len: Maximum buf length in octets
* @p2p_group: Whether this is for association with a P2P GO
* @p2p_ie: Reassembled P2P IE data from scan results or %NULL if none
* Returns: Number of octets written into buf or -1 on failure
*/
int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
size_t len, int p2p_group, struct wpabuf *p2p_ie);
/**
* p2p_scan_ie - Build P2P IE for Probe Request
* @p2p: P2P module context from p2p_init()
* @ies: Buffer for writing P2P IE
*/
void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies);
/**
* p2p_go_params - Generate random P2P group parameters
* @p2p: P2P module context from p2p_init()
* @params: Buffer for parameters
* Returns: 0 on success, -1 on failure
*/
int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params);
/**
* p2p_get_group_capab - Get Group Capability from P2P IE data
* @p2p_ie: P2P IE(s) contents
* Returns: Group Capability
*/
u8 p2p_get_group_capab(const struct wpabuf *p2p_ie);
/**
* p2p_get_cross_connect_disallowed - Does WLAN AP disallows cross connection
* @p2p_ie: P2P IE(s) contents
* Returns: 0 if cross connection is allow, 1 if not
*/
int p2p_get_cross_connect_disallowed(const struct wpabuf *p2p_ie);
/**
* p2p_get_go_dev_addr - Get P2P Device Address from P2P IE data
* @p2p_ie: P2P IE(s) contents
* Returns: Pointer to P2P Device Address or %NULL if not included
*/
const u8 * p2p_get_go_dev_addr(const struct wpabuf *p2p_ie);
/**
* p2p_get_peer_info - Get P2P peer information in text format
* @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
* @buf: Buffer for returning text
* @buflen: Maximum buffer length
* Returns: Number of octets written to the buffer or -1 on failure
*/
int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
char *buf, size_t buflen);
/**
* p2p_set_client_discoverability - Set client discoverability capability
* @p2p: P2P module context from p2p_init()
* @enabled: Whether client discoverability will be enabled
*
* This function can be used to disable (and re-enable) client discoverability.
* This capability is enabled by default and should not be disabled in normal
* use cases, i.e., this is mainly for testing purposes.
*/
void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled);
/**
* 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
*/
void p2p_set_managed_oper(struct p2p_data *p2p, int enabled);
int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel);
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);
/**
* p2p_set_cross_connect - Set cross connection capability
* @p2p: P2P module context from p2p_init()
* @enabled: Whether cross connection will be enabled
*/
void p2p_set_cross_connect(struct p2p_data *p2p, int 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()
* @enabled: Whether intra BSS distribution will be enabled
*/
void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled);
/**
* p2p_supported_freq - Check whether channel is supported for P2P
* @p2p: P2P module context from p2p_init()
* @freq: Channel frequency in MHz
* Returns: 0 if channel not usable for P2P, 1 if usable for P2P
*/
int p2p_supported_freq(struct p2p_data *p2p, unsigned int freq);
void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan);
/**
* p2p_set_best_channels - Update best channel information
* @p2p: P2P module context from p2p_init()
* @freq_24: Frequency (MHz) of best channel in 2.4 GHz band
* @freq_5: Frequency (MHz) of best channel in 5 GHz band
* @freq_overall: Frequency (MHz) of best channel overall
*/
void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
int freq_overall);
const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p);
/**
* p2p_get_group_num_members - Get number of members in group
* @group: P2P group context from p2p_group_init()
* Returns: Number of members in the group
*/
unsigned int p2p_get_group_num_members(struct p2p_group *group);
/**
* p2p_iterate_group_members - Iterate group members
* @group: P2P group context from p2p_group_init()
* @next: iteration pointer, must be a pointer to a void * that is set to %NULL
* on the first call and not modified later
* Returns: A P2P Interface Address for each call and %NULL for no more members
*/
const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next);
/**
* 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
* @next: Whether to select the peer entry following the one indicated by addr
* Returns: The first P2P peer info available or %NULL if no such peer exists
*/
const struct p2p_peer_info *
p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next);
/**
* p2p_remove_wps_vendor_extensions - Remove WPS vendor extensions
* @p2p: P2P module context from p2p_init()
*/
void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);
/**
* p2p_add_wps_vendor_extension - Add a WPS vendor extension
* @p2p: P2P module context from p2p_init()
* @vendor_ext: The vendor extensions to add
* Returns: 0 on success, -1 on failure
*
* The wpabuf structures in the array are owned by the P2P
* module after this call.
*/
int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
const struct wpabuf *vendor_ext);
/**
* p2p_set_oper_channel - Set the P2P operating channel
* @p2p: P2P module context from p2p_init()
* @op_reg_class: Operating regulatory class to set
* @op_channel: operating channel to set
* @cfg_op_channel : Whether op_channel is hardcoded in configuration
* Returns: 0 on success, -1 on failure
*/
int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
int cfg_op_channel);
#endif /* P2P_H */