esp-idf/components/esp_wifi/include/esp_private/wifi.h
Nachiket Kukade 4c76af3f68 esp_wifi: Add support for NAN Discovery and Datapath
Update wifi lib with below -
1. Create NAN Discovery SM for beaconing & cluster formation
2. Create NAN interface for Tx/Rx of beacons & action frames
3. Add commands & events for NAN Services Publish/Subscribe/Followup
4. Add NAN Datapath definitions, Events, Peer structures
5. Support for forming and parsing of Datapath related attributes
6. Modules for NDP Req, Resp, Confirm, Term, Peer management
7. NAN Interface related additions in Datapath, Data Tx Q's

In addition include below changes -
1. Add netif and driver support for NAN Interface
2. Add simple examples for Publisher-Subscriber usecases
3. Add an advanced console example that supports commands
   for NAN Discovery, Services & Datapath
4. Add wifi_apps for providing better NAN API's and Peer management

Co-authored-by: Shyamal Khachane <shyamal.khachane@espressif.com>
2023-03-10 11:18:23 +05:30

731 lines
23 KiB
C

/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/*
* All the APIs declared here are internal only APIs, it can only be used by
* espressif internal modules, such as SSC, LWIP, esp-netif etc, espressif
* customers are not recommended to use them.
*
* If someone really want to use specified APIs declared in here, please contact
* espressif AE/developer to make sure you know the limitations or risk of
* the API, otherwise you may get unexpected behavior!!!
*
*/
#ifndef __ESP_WIFI_INTERNAL_H__
#define __ESP_WIFI_INTERNAL_H__
#include <stdint.h>
#include <stdbool.h>
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#include "sys/queue.h"
#include "esp_err.h"
#include "esp_wifi_types.h"
#include "esp_event.h"
#include "esp_wifi.h"
#include "esp_smartconfig.h"
#include "wifi_types.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
QueueHandle_t handle; /**< FreeRTOS queue handler */
void *storage; /**< storage for FreeRTOS queue */
} wifi_static_queue_t;
/**
* @brief WiFi log level
*
*/
typedef enum {
WIFI_LOG_NONE = 0,
WIFI_LOG_ERROR , /*enabled by default*/
WIFI_LOG_WARNING, /*enabled by default*/
WIFI_LOG_INFO, /*enabled by default*/
WIFI_LOG_DEBUG, /*can be set in menuconfig*/
WIFI_LOG_VERBOSE, /*can be set in menuconfig*/
} wifi_log_level_t;
/**
* @brief WiFi log module definition
*
*/
typedef enum {
WIFI_LOG_MODULE_ALL = 0, /*all log modules */
WIFI_LOG_MODULE_WIFI, /*logs related to WiFi*/
WIFI_LOG_MODULE_COEX, /*logs related to WiFi and BT(or BLE) coexist*/
WIFI_LOG_MODULE_MESH, /*logs related to Mesh*/
} wifi_log_module_t;
/**
* @brief WiFi log submodule definition
*
*/
#define WIFI_LOG_SUBMODULE_ALL (0) /*all log submodules*/
#define WIFI_LOG_SUBMODULE_INIT (1) /*logs related to initialization*/
#define WIFI_LOG_SUBMODULE_IOCTL (1<<1) /*logs related to API calling*/
#define WIFI_LOG_SUBMODULE_CONN (1<<2) /*logs related to connecting*/
#define WIFI_LOG_SUBMODULE_SCAN (1<<3) /*logs related to scaning*/
/**
* @brief Initialize Wi-Fi Driver
* Alloc resource for WiFi driver, such as WiFi control structure, RX/TX buffer,
* WiFi NVS structure among others.
*
* For the most part, you need not call this function directly. It gets called
* from esp_wifi_init().
*
* This function may be called, if you only need to initialize the Wi-Fi driver
* without having to use the network stack on top.
*
* @param config provide WiFi init configuration
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_NO_MEM: out of memory
* - others: refer to error code esp_err.h
*/
esp_err_t esp_wifi_init_internal(const wifi_init_config_t *config);
/**
* @brief Deinitialize Wi-Fi Driver
* Free resource for WiFi driver, such as WiFi control structure, RX/TX buffer,
* WiFi NVS structure among others.
*
* For the most part, you need not call this function directly. It gets called
* from esp_wifi_deinit().
*
* This function may be called, if you call esp_wifi_init_internal to initialize
* WiFi driver.
*
* @return
* - ESP_OK: succeed
* - others: refer to error code esp_err.h
*/
esp_err_t esp_wifi_deinit_internal(void);
/**
* @brief free the rx buffer which allocated by wifi driver
*
* @param void* buffer: rx buffer pointer
*/
void esp_wifi_internal_free_rx_buffer(void* buffer);
/**
* @brief transmit the buffer via wifi driver
*
* This API makes a copy of the input buffer and then forwards the buffer
* copy to WiFi driver.
*
* @param wifi_interface_t wifi_if : wifi interface id
* @param void *buffer : the buffer to be transmit
* @param uint16_t len : the length of buffer
*
* @return
* - ESP_OK : Successfully transmit the buffer to wifi driver
* - ESP_ERR_NO_MEM: out of memory
* - ESP_ERR_WIFI_ARG: invalid argument
* - ESP_ERR_WIFI_IF : WiFi interface is invalid
* - ESP_ERR_WIFI_CONN : WiFi interface is not created, e.g. send the data to STA while WiFi mode is AP mode
* - ESP_ERR_WIFI_NOT_STARTED : WiFi is not started
* - ESP_ERR_WIFI_STATE : WiFi internal state is not ready, e.g. WiFi is not started
* - ESP_ERR_WIFI_NOT_ASSOC : WiFi is not associated
* - ESP_ERR_WIFI_TX_DISALLOW : WiFi TX is disallowed, e.g. WiFi hasn't pass the authentication
* - ESP_ERR_WIFI_POST : caller fails to post event to WiFi task
*/
int esp_wifi_internal_tx(wifi_interface_t wifi_if, void *buffer, uint16_t len);
/**
* @brief The net stack buffer reference counter callback function
*
*/
typedef void (*wifi_netstack_buf_ref_cb_t)(void *netstack_buf);
/**
* @brief The net stack buffer free callback function
*
*/
typedef void (*wifi_netstack_buf_free_cb_t)(void *netstack_buf);
/**
* @brief transmit the buffer by reference via wifi driver
*
* This API firstly increases the reference counter of the input buffer and
* then forwards the buffer to WiFi driver. The WiFi driver will free the buffer
* after processing it. Use esp_wifi_internal_tx() if the uplayer buffer doesn't
* supports reference counter.
*
* @param wifi_if : wifi interface id
* @param buffer : the buffer to be tansmit
* @param len : the length of buffer
* @param netstack_buf : the netstack buffer related to bufffer
*
* @return
* - ESP_OK : Successfully transmit the buffer to wifi driver
* - ESP_ERR_NO_MEM: out of memory
* - ESP_ERR_WIFI_ARG: invalid argument
* - ESP_ERR_WIFI_IF : WiFi interface is invalid
* - ESP_ERR_WIFI_CONN : WiFi interface is not created, e.g. send the data to STA while WiFi mode is AP mode
* - ESP_ERR_WIFI_NOT_STARTED : WiFi is not started
* - ESP_ERR_WIFI_STATE : WiFi internal state is not ready, e.g. WiFi is not started
* - ESP_ERR_WIFI_NOT_ASSOC : WiFi is not associated
* - ESP_ERR_WIFI_TX_DISALLOW : WiFi TX is disallowed, e.g. WiFi hasn't pass the authentication
* - ESP_ERR_WIFI_POST : caller fails to post event to WiFi task
*/
esp_err_t esp_wifi_internal_tx_by_ref(wifi_interface_t ifx, void *buffer, size_t len, void *netstack_buf);
/**
* @brief Initialize WAPI function when wpa_supplicant initialize.
*
* This API is privately used, be careful not open to external applicantion.
*
* @return
* - ESP_OK : succeed
* - ESP_ERR_WAPI_INTERNAL : Internal error
*/
esp_err_t esp_wifi_internal_wapi_init(void);
/**
* @brief De-initialize WAPI function when wpa_supplicant de-initialize.
*
* This API is privately used, be careful not open to external applicantion.
*
* @return
* - ESP_OK : succeed
*/
esp_err_t esp_wifi_internal_wapi_deinit(void);
/**
* @brief register the net stack buffer reference increasing and free callback
*
* @param ref : net stack buffer reference callback
* @param free: net stack buffer free callback
*
* @return
* - ESP_OK : Successfully transmit the buffer to wifi driver
* - others : failed to register the callback
*/
esp_err_t esp_wifi_internal_reg_netstack_buf_cb(wifi_netstack_buf_ref_cb_t ref, wifi_netstack_buf_free_cb_t free);
/**
* @brief The WiFi RX callback function
*
* Each time the WiFi need to forward the packets to high layer, the callback function will be called
*/
typedef esp_err_t (*wifi_rxcb_t)(void *buffer, uint16_t len, void *eb);
/**
* @brief Set the WiFi RX callback
*
* @attention 1. Currently we support only one RX callback for each interface
*
* @param wifi_interface_t ifx : interface
* @param wifi_rxcb_t fn : WiFi RX callback
*
* @return
* - ESP_OK : succeed
* - others : fail
*/
esp_err_t esp_wifi_internal_reg_rxcb(wifi_interface_t ifx, wifi_rxcb_t fn);
/**
* @brief Notify WIFI driver that the station got ip successfully
*
* @return
* - ESP_OK : succeed
* - others : fail
*/
esp_err_t esp_wifi_internal_set_sta_ip(void);
/**
* @brief enable or disable transmitting WiFi MAC frame with fixed rate
*
* @attention 1. If fixed rate is enabled, both management and data frame are transmitted with fixed rate
* @attention 2. Make sure that the receiver is able to receive the frame with the fixed rate if you want the frame to be received
* @attention 3. Not support to set fix rate for espnow and 80211_tx
*
* @param ifx : wifi interface
* @param en : false - disable, true - enable
* @param rate : PHY rate
*
* @return
* - ERR_OK : succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi was not started by esp_wifi_start
* - ESP_ERR_WIFI_IF : invalid WiFi interface
* - ESP_ERR_INVALID_ARG : invalid rate
* - ESP_ERR_NOT_SUPPORTED : do not support to set fixed rate if TX AMPDU is enabled
*/
esp_err_t esp_wifi_internal_set_fix_rate(wifi_interface_t ifx, bool en, wifi_phy_rate_t rate);
/**
* @brief Start SmartConfig, config ESP device to connect AP. You need to broadcast information by phone APP.
* Device sniffer special packets from the air that containing SSID and password of target AP.
*
* @attention 1. This API can be called in station or softAP-station mode.
* @attention 2. Can not call esp_smartconfig_start twice before it finish, please call
* esp_smartconfig_stop first.
*
* @param config pointer to smartconfig start configure structure
*
* @return
* - ESP_OK: succeed
* - others: fail
*/
esp_err_t esp_smartconfig_internal_start(const smartconfig_start_config_t *config);
/**
* @brief Stop SmartConfig, free the buffer taken by esp_smartconfig_start.
*
* @attention Whether connect to AP succeed or not, this API should be called to free
* memory taken by smartconfig_start.
*
* @return
* - ESP_OK: succeed
* - others: fail
*/
esp_err_t esp_smartconfig_internal_stop(void);
/**
* @brief Check the MD5 values of the OS adapter header files in IDF and WiFi library
*
* @attention 1. It is used for internal CI version check
*
* @return
* - ESP_OK : succeed
* - ESP_WIFI_INVALID_ARG : MD5 check fail
*/
esp_err_t esp_wifi_internal_osi_funcs_md5_check(const char *md5);
/**
* @brief Check the MD5 values of the crypto types header files in IDF and WiFi library
*
* @attention 1. It is used for internal CI version check
*
* @return
* - ESP_OK : succeed
* - ESP_WIFI_INVALID_ARG : MD5 check fail
*/
esp_err_t esp_wifi_internal_crypto_funcs_md5_check(const char *md5);
/**
* @brief Check the MD5 values of the esp_wifi_types.h in IDF and WiFi library
*
* @attention 1. It is used for internal CI version check
*
* @return
* - ESP_OK : succeed
* - ESP_WIFI_INVALID_ARG : MD5 check fail
*/
esp_err_t esp_wifi_internal_wifi_type_md5_check(const char *md5);
/**
* @brief Check the MD5 values of the esp_wifi_he_types.h in IDF and WiFi library
*
* @attention 1. It is used for internal CI version check
*
* @return
* - ESP_OK : succeed
* - ESP_WIFI_INVALID_ARG : MD5 check fail
*/
esp_err_t esp_wifi_internal_wifi_he_type_md5_check(const char *md5);
/**
* @brief Check the MD5 values of the esp_wifi.h in IDF and WiFi library
*
* @attention 1. It is used for internal CI version check
*
* @return
* - ESP_OK : succeed
* - ESP_WIFI_INVALID_ARG : MD5 check fail
*/
esp_err_t esp_wifi_internal_esp_wifi_md5_check(const char *md5);
/**
* @brief Check the MD5 values of the esp_wifi_he.h in IDF and WiFi library
*
* @attention 1. It is used for internal CI version check
*
* @return
* - ESP_OK : succeed
* - ESP_WIFI_INVALID_ARG : MD5 check fail
*/
esp_err_t esp_wifi_internal_esp_wifi_he_md5_check(const char *md5);
/**
* @brief Allocate a chunk of memory for WiFi driver
*
* @attention This API is not used for DMA memory allocation.
*
* @param size_t size : Size, in bytes, of the amount of memory to allocate
*
* @return A pointer to the memory allocated on success, NULL on failure
*/
void *wifi_malloc( size_t size );
/**
* @brief Reallocate a chunk of memory for WiFi driver
*
* @attention This API is not used for DMA memory allocation.
*
* @param void * ptr : Pointer to previously allocated memory, or NULL for a new allocation.
* @param size_t size : Size, in bytes, of the amount of memory to allocate
*
* @return A pointer to the memory allocated on success, NULL on failure
*/
void *wifi_realloc( void *ptr, size_t size );
/**
* @brief Callocate memory for WiFi driver
*
* @attention This API is not used for DMA memory allocation.
*
* @param size_t n : Number of continuing chunks of memory to allocate
* @param size_t size : Size, in bytes, of the amount of memory to allocate
*
* @return A pointer to the memory allocated on success, NULL on failure
*/
void *wifi_calloc( size_t n, size_t size );
/**
* @brief Update WiFi MAC time
*
* @param uint32_t time_delta : time duration since the WiFi/BT common clock is disabled
*
* @return Always returns ESP_OK
*/
typedef esp_err_t (* wifi_mac_time_update_cb_t)( uint32_t time_delta );
/**
* @brief Update WiFi MAC time
*
* @param uint32_t time_delta : time duration since the WiFi/BT common clock is disabled
*
* @return Always returns ESP_OK
*/
esp_err_t esp_wifi_internal_update_mac_time( uint32_t time_delta );
/**
* @brief Set current WiFi log level
*
* @param level Log level.
*
* @return
* - ESP_OK: succeed
* - ESP_FAIL: level is invalid
*/
esp_err_t esp_wifi_internal_set_log_level(wifi_log_level_t level);
/**
* @brief Set current log module and submodule
*
* @param module Log module
* @param submodule Log submodule
* @param enable enable or disable
* If module == 0 && enable == 0, all log modules are disabled.
* If module == 0 && enable == 1, all log modules are enabled.
* If submodule == 0 && enable == 0, all log submodules are disabled.
* If submodule == 0 && enable == 1, all log submodules are enabled.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_ARG: invalid argument
*/
esp_err_t esp_wifi_internal_set_log_mod(wifi_log_module_t module, uint32_t submodule, bool enable);
/**
* @brief Get current WiFi log info
*
* @param log_level the return log level.
* @param log_mod the return log module and submodule
*
* @return
* - ESP_OK: succeed
*/
esp_err_t esp_wifi_internal_get_log(wifi_log_level_t *log_level, uint32_t *log_mod);
/**
* @brief A general API to set/get WiFi internal configuration, it's for debug only
*
* @param cmd : ioctl command type
* @param cfg : configuration for the command
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_wifi_internal_ioctl(int cmd, wifi_ioctl_config_t *cfg);
/**
* @brief Get the user-configured channel info
*
* @param ifx : WiFi interface
* @param primary : store the configured primary channel
* @param second : store the configured second channel
*
* @return
* - ESP_OK: succeed
*/
esp_err_t esp_wifi_internal_get_config_channel(wifi_interface_t ifx, uint8_t *primary, uint8_t *second);
/**
* @brief Get the negotiated channel info after WiFi connection established
*
* @param ifx : WiFi interface
* @param aid : the connection number when a STA connects to the softAP
* @param primary : store the negotiated primary channel
* @param second : store the negotiated second channel
* @attention the aid param is only works when the device in softAP/softAP+STA mode
*
* @return
* - ESP_OK: succeed
*/
esp_err_t esp_wifi_internal_get_negotiated_channel(wifi_interface_t ifx, uint8_t aid, uint8_t *primary, uint8_t *second);
/**
* @brief Get the negotiated bandwidth info after WiFi connection established
*
* @param ifx : WiFi interface
* @param bw : store the negotiated bandwidth
*
* @return
* - ESP_OK: succeed
*/
esp_err_t esp_wifi_internal_get_negotiated_bandwidth(wifi_interface_t ifx, uint8_t aid, uint8_t *bw);
#if SOC_WIFI_HW_TSF
/**
* @brief Check if WiFi TSF is active
*
* @return
* - true: Active
* - false: Not active
*/
bool esp_wifi_internal_is_tsf_active(void);
/**
* @brief Update WIFI light sleep wake ahead time
*
*/
void esp_wifi_internal_update_light_sleep_wake_ahead_time(uint32_t);
/**
* @brief Update WiFi TSF tick interval
*
* @return
* - true: Active
* - false: Not active
*/
esp_err_t esp_wifi_update_tsf_tick_interval(void);
#endif
/**
* @brief Wifi power domain power on
*/
void esp_wifi_power_domain_on(void);
/**
* @brief Wifi power domain power off
*/
void esp_wifi_power_domain_off(void);
#if CONFIG_MAC_BB_PD
/**
* @brief Enable or disable powering down MAC and baseband when Wi-Fi is sleeping.
*
* @param enable : enable or disable
*
* @return
* - ESP_OK: succeed
*/
esp_err_t esp_wifi_internal_set_mac_sleep(bool enable);
/**
* @brief mac bb sleep.
*/
void pm_mac_sleep(void);
/**
* @brief mac bb wakeup.
*/
void pm_mac_wakeup(void);
#endif
/**
* @breif TxDone callback function type. Should be registered using esp_wifi_set_tx_done_cb()
*
* @param ifidx The interface id that the tx callback has been triggered from
* @param data Pointer to the data transmitted
* @param data_len Length of the data transmitted
* @param txStatus True:if the data was transmitted sucessfully False: if data transmission failed
*/
typedef void (* wifi_tx_done_cb_t)(uint8_t ifidx, uint8_t *data, uint16_t *data_len, bool txStatus);
/**
* @brief Register the txDone callback function of type wifi_tx_done_cb_t
*
* @param cb The callback function
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
*/
esp_err_t esp_wifi_set_tx_done_cb(wifi_tx_done_cb_t cb);
/**
* @brief Set device spp amsdu attributes
*
* @param ifx: WiFi interface
* @param spp_cap: spp amsdu capable
* @param spp_req: spp amsdu require
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_IF : invalid WiFi interface
*/
esp_err_t esp_wifi_internal_set_spp_amsdu(wifi_interface_t ifidx, bool spp_cap, bool spp_req);
/**
* @brief Update WIFI light sleep default parameters
*
* @param min_freq_mhz: minimum frequency of DFS
* @param max_freq_mhz: maximum frequency of DFS
*/
void esp_wifi_internal_update_light_sleep_default_params(int min_freq_mhz, int max_freq_mhz);
/**
* @brief Set the delay time for wifi to enter the sleep state when light sleep
*
* @param return_to_sleep_delay: minimum timeout time for waiting to receive
* data, when no data is received during the timeout period,
* the wifi enters the sleep process.
*/
void esp_wifi_set_sleep_delay_time(uint32_t return_to_sleep_delay);
/**
* @brief Set wifi keep alive time
*
* @param keep_alive_time: keep alive time
*/
void esp_wifi_set_keep_alive_time(uint32_t keep_alive_time);
/**
* @brief Configure wifi beacon montior default parameters
*
* @param config: the configuration parameters for wifi beacon monitor
*/
void esp_wifi_beacon_monitor_configure(wifi_beacon_monitor_config_t *config);
/**
* @brief Require WiFi to enable or disable Advanced DTIM sleep function
*
* @param light_sleep_enable: true for light sleep mode is enabled, false for light sleep mode is disabled.
* @param modem_state_enable: true for require WiFi to enable Advanced DTIM sleep function,
* false for require WiFi to disable Advanced DTIM sleep function.
* @return
* - ESP_OK: succeed
*/
void esp_wifi_internal_mac_sleep_configure(bool light_sleep_enable, bool modem_state_enable);
/**
* @brief Start Publishing a service in the NAN cluster
*
* @attention This API should be called after esp_wifi_start() in NAN Mode.
*
* @param publish_cfg Configuration parameters for publishing a service.
* @param id Identifier for the Publish service.
* @param cancel Cancel the service identified by the id.
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_nan_internal_publish_service(const wifi_nan_publish_cfg_t *publish_cfg,
uint8_t *id, bool cancel);
/**
* @brief Subscribe for a service within the NAN cluster
*
* @attention This API should be called after esp_wifi_start() in NAN Mode.
*
* @param subscribe_cfg Configuration parameters for subscribing for a service.
* @param id Identifier for the Subscribe service.
* @param cancel Cancel the service identified by the id.
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_nan_internal_subscribe_service(const wifi_nan_subscribe_cfg_t *subscribe_cfg,
uint8_t *id, bool cancel);
/**
* @brief Send Follow-up to the Publisher with matching service
*
* @attention This API should be called after WIFI_EVENT_NAN_SVC_MATCH event is received.
*
* @param fup_params Configuration parameters for sending a Follow-up to the Peer.
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_nan_internal_send_followup(const wifi_nan_followup_params_t *fup_params);
/**
* @brief Send Datapath Request to the Publisher with matching service
*
* @attention This API should be called after WIFI_EVENT_NAN_SVC_MATCH event is received.
*
* @param req NAN Datapath Request parameters.
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_nan_internal_datapath_req(wifi_nan_datapath_req_t *req, uint8_t *ndp_id);
/**
* @brief Send Datapath Response to accept or reject the received request
*
* @attention This API should be called on the Publisher after receiving WIFI_EVENT_NDP_INDICATION event.
*
* @param resp NAN Datapath Response parameters.
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_nan_internal_datapath_resp(wifi_nan_datapath_resp_t *resp);
/**
* @brief End NAN Datapath that is active
*
* @attention This API should be called after receiving WIFI_EVENT_NDP_CONFIRM event.
*
* @param req NAN Datapath end request parameters.
*
* @return
* - ESP_OK: succeed
* - others: failed
*/
esp_err_t esp_nan_internal_datapath_end(wifi_nan_datapath_end_req_t *req);
#ifdef __cplusplus
}
#endif
#endif /* __ESP_WIFI_H__ */