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esp-idf/components/esp_netif/include/esp_netif.h

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/*
* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _ESP_NETIF_H_
#define _ESP_NETIF_H_
#include <stdint.h>
#include "sdkconfig.h"
#include "esp_netif_ip_addr.h"
#include "esp_netif_types.h"
#include "esp_netif_defaults.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup ESP_NETIF_INIT_API ESP-NETIF Initialization API
* @brief Initialization and deinitialization of underlying TCP/IP stack and esp-netif instances
*
*/
/** @addtogroup ESP_NETIF_INIT_API
* @{
*/
/**
* @brief Initialize the underlying TCP/IP stack
*
* @return
* - ESP_OK on success
* - ESP_FAIL if initializing failed
* @note This function should be called exactly once from application code, when the application starts up.
*/
esp_err_t esp_netif_init(void);
/**
* @brief Deinitialize the esp-netif component (and the underlying TCP/IP stack)
*
* Note: Deinitialization is not supported yet
*
* @return
* - ESP_ERR_INVALID_STATE if esp_netif not initialized
* - ESP_ERR_NOT_SUPPORTED otherwise
*/
esp_err_t esp_netif_deinit(void);
/**
* @brief Creates an instance of new esp-netif object based on provided config
*
* @param[in] esp_netif_config pointer esp-netif configuration
*
* @return
* - pointer to esp-netif object on success
* - NULL otherwise
*/
esp_netif_t *esp_netif_new(const esp_netif_config_t *esp_netif_config);
/**
* @brief Destroys the esp_netif object
*
* @param[in] esp_netif pointer to the object to be deleted
*/
void esp_netif_destroy(esp_netif_t *esp_netif);
/**
* @brief Configures driver related options of esp_netif object
*
* @param[inout] esp_netif pointer to the object to be configured
* @param[in] driver_config pointer esp-netif io driver related configuration
* @return
* - ESP_OK on success
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS if invalid parameters provided
*
*/
esp_err_t esp_netif_set_driver_config(esp_netif_t *esp_netif,
const esp_netif_driver_ifconfig_t *driver_config);
/**
* @brief Attaches esp_netif instance to the io driver handle
*
* Calling this function enables connecting specific esp_netif object
* with already initialized io driver to update esp_netif object with driver
* specific configuration (i.e. calls post_attach callback, which typically
* sets io driver callbacks to esp_netif instance and starts the driver)
*
* @param[inout] esp_netif pointer to esp_netif object to be attached
* @param[in] driver_handle pointer to the driver handle
* @return
* - ESP_OK on success
* - ESP_ERR_ESP_NETIF_DRIVER_ATTACH_FAILED if driver's pot_attach callback failed
*/
esp_err_t esp_netif_attach(esp_netif_t *esp_netif, esp_netif_iodriver_handle driver_handle);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_DATA_IO_API ESP-NETIF Input Output API
* @brief Input and Output functions to pass data packets from communication media (IO driver)
* to TCP/IP stack.
*
* These functions are usually not directly called from user code, but installed, or registered
* as callbacks in either IO driver on one hand or TCP/IP stack on the other. More specifically
* esp_netif_receive is typically called from io driver on reception callback to input the packets
* to TCP/IP stack. Similarly esp_netif_transmit is called from the TCP/IP stack whenever
* a packet ought to output to the communication media.
*
* @note These IO functions are registerd (installed) automatically for default interfaces
* (interfaces with the keys such as WIFI_STA_DEF, WIFI_AP_DEF, ETH_DEF). Custom interface
* has to register these IO functions when creating interface using @ref esp_netif_new
*
*/
/** @addtogroup ESP_NETIF_DATA_IO_API
* @{
*/
/**
* @brief Passes the raw packets from communication media to the appropriate TCP/IP stack
*
* This function is called from the configured (peripheral) driver layer.
* The data are then forwarded as frames to the TCP/IP stack.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] buffer Received data
* @param[in] len Length of the data frame
* @param[in] eb Pointer to internal buffer (used in Wi-Fi driver)
*
* @return
* - ESP_OK
*/
esp_err_t esp_netif_receive(esp_netif_t *esp_netif, void *buffer, size_t len, void *eb);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_LIFECYCLE ESP-NETIF Lifecycle control
* @brief These APIS define basic building blocks to control network interface lifecycle, i.e.
* start, stop, set_up or set_down. These functions can be directly used as event handlers
* registered to follow the events from communication media.
*/
/** @addtogroup ESP_NETIF_LIFECYCLE
* @{
*/
/**
* @brief Default building block for network interface action upon IO driver start event
* Creates network interface, if AUTOUP enabled turns the interface on,
* if DHCPS enabled starts dhcp server
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_start(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IO driver stop event
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_stop(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IO driver connected event
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_connected(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IO driver disconnected event
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_disconnected(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon network got IP event
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_got_ip(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IPv6 multicast group join
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_join_ip6_multicast_group(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IPv6 multicast group leave
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_leave_ip6_multicast_group(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IPv6 address added by the underlying stack
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_add_ip6_address(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Default building block for network interface action upon IPv6 address removed by the underlying stack
*
* @note This API can be directly used as event handler
*
* @param[in] esp_netif Handle to esp-netif instance
* @param base
* @param event_id
* @param data
*/
void esp_netif_action_remove_ip6_address(void *esp_netif, esp_event_base_t base, int32_t event_id, void *data);
/**
* @brief Manual configuration of the default netif
*
* This API overrides the automatic configuration of the default interface based on the route_prio
* If the selected netif is set default using this API, no other interface could be set-default disregarding
* its route_prio number (unless the selected netif gets destroyed)
*
* @param[in] esp_netif Handle to esp-netif instance
* @return ESP_OK on success
*/
esp_err_t esp_netif_set_default_netif(esp_netif_t *esp_netif);
/**
* @brief Getter function of the default netif
*
* This API returns the selected default netif.
*
* @return Handle to esp-netif instance of the default netif.
*/
esp_netif_t* esp_netif_get_default_netif(void);
#if CONFIG_ESP_NETIF_BRIDGE_EN
/**
* @brief Add a port to the bridge
*
* @param esp_netif_br Handle to bridge esp-netif instance
* @param esp_netif_port Handle to port esp-netif instance
* @return ESP_OK on success
*/
esp_err_t esp_netif_bridge_add_port(esp_netif_t *esp_netif_br, esp_netif_t *esp_netif_port);
/**
* @brief Add a static entry to bridge forwarding database
*
* @param esp_netif_br Handle to bridge esp-netif instance
* @param addr MAC address entry to be added
* @param ports_mask Port(s) mask where to be the address forwarded
* @return ESP_OK on success
*/
esp_err_t esp_netif_bridge_fdb_add(esp_netif_t *esp_netif_br, uint8_t *addr, uint64_t ports_mask);
/**
* @brief Remove a static entry from bridge forwarding database
*
* @param esp_netif_br Handle to bridge esp-netif instance
* @param addr MAC address entry to be removed
* @return ESP_OK on success
*/
esp_err_t esp_netif_bridge_fdb_remove(esp_netif_t *esp_netif_br, uint8_t *addr);
#endif // CONFIG_ESP_NETIF_BRIDGE_EN
/**
* @brief Cause the TCP/IP stack to join a IPv6 multicast group
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] addr The multicast group to join
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_MLD6_FAILED
* - ESP_ERR_NO_MEM
*/
esp_err_t esp_netif_join_ip6_multicast_group(esp_netif_t *esp_netif, const esp_ip6_addr_t *addr);
/**
* @brief Cause the TCP/IP stack to leave a IPv6 multicast group
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] addr The multicast group to leave
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_MLD6_FAILED
* - ESP_ERR_NO_MEM
*/
esp_err_t esp_netif_leave_ip6_multicast_group(esp_netif_t *esp_netif, const esp_ip6_addr_t *addr);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_GET_SET ESP-NETIF Runtime configuration
* @brief Getters and setters for various TCP/IP related parameters
*/
/** @addtogroup ESP_NETIF_GET_SET
* @{
*/
/**
* @brief Set the mac address for the interface instance
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] mac Desired mac address for the related network interface
* @return
* - ESP_OK - success
* - ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
* - ESP_ERR_NOT_SUPPORTED - mac not supported on this interface
*/
esp_err_t esp_netif_set_mac(esp_netif_t *esp_netif, uint8_t mac[]);
/**
* @brief Get the mac address for the interface instance
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] mac Resultant mac address for the related network interface
* @return
* - ESP_OK - success
* - ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
* - ESP_ERR_NOT_SUPPORTED - mac not supported on this interface
*/
esp_err_t esp_netif_get_mac(esp_netif_t *esp_netif, uint8_t mac[]);
/**
* @brief Set the hostname of an interface
*
* The configured hostname overrides the default configuration value CONFIG_LWIP_LOCAL_HOSTNAME.
* Please note that when the hostname is altered after interface started/connected the changes
* would only be reflected once the interface restarts/reconnects
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] hostname New hostname for the interface. Maximum length 32 bytes.
*
* @return
* - ESP_OK - success
* - ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS - parameter error
*/
esp_err_t esp_netif_set_hostname(esp_netif_t *esp_netif, const char *hostname);
/**
* @brief Get interface hostname.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] hostname Returns a pointer to the hostname. May be NULL if no hostname is set. If set non-NULL, pointer remains valid (and string may change if the hostname changes).
*
* @return
* - ESP_OK - success
* - ESP_ERR_ESP_NETIF_IF_NOT_READY - interface status error
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS - parameter error
*/
esp_err_t esp_netif_get_hostname(esp_netif_t *esp_netif, const char **hostname);
/**
* @brief Test if supplied interface is up or down
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* - true - Interface is up
* - false - Interface is down
*/
bool esp_netif_is_netif_up(esp_netif_t *esp_netif);
/**
* @brief Get interface's IP address information
*
* If the interface is up, IP information is read directly from the TCP/IP stack.
* If the interface is down, IP information is read from a copy kept in the ESP-NETIF instance
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] ip_info If successful, IP information will be returned in this argument.
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
*/
esp_err_t esp_netif_get_ip_info(esp_netif_t *esp_netif, esp_netif_ip_info_t *ip_info);
/**
* @brief Get interface's old IP information
*
* Returns an "old" IP address previously stored for the interface when the valid IP changed.
*
* If the IP lost timer has expired (meaning the interface was down for longer than the configured interval)
* then the old IP information will be zero.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] ip_info If successful, IP information will be returned in this argument.
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
*/
esp_err_t esp_netif_get_old_ip_info(esp_netif_t *esp_netif, esp_netif_ip_info_t *ip_info);
/**
* @brief Set interface's IP address information
*
* This function is mainly used to set a static IP on an interface.
*
* If the interface is up, the new IP information is set directly in the TCP/IP stack.
*
* The copy of IP information kept in the ESP-NETIF instance is also updated (this
* copy is returned if the IP is queried while the interface is still down.)
*
* @note DHCP client/server must be stopped (if enabled for this interface) before setting new IP information.
*
* @note Calling this interface for may generate a SYSTEM_EVENT_STA_GOT_IP or SYSTEM_EVENT_ETH_GOT_IP event.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] ip_info IP information to set on the specified interface
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_NOT_STOPPED If DHCP server or client is still running
*/
esp_err_t esp_netif_set_ip_info(esp_netif_t *esp_netif, const esp_netif_ip_info_t *ip_info);
/**
* @brief Set interface old IP information
*
* This function is called from the DHCP client (if enabled), before a new IP is set.
* It is also called from the default handlers for the SYSTEM_EVENT_STA_CONNECTED and SYSTEM_EVENT_ETH_CONNECTED events.
*
* Calling this function stores the previously configured IP, which can be used to determine if the IP changes in the future.
*
* If the interface is disconnected or down for too long, the "IP lost timer" will expire (after the configured interval) and set the old IP information to zero.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] ip_info Store the old IP information for the specified interface
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
*/
esp_err_t esp_netif_set_old_ip_info(esp_netif_t *esp_netif, const esp_netif_ip_info_t *ip_info);
/**
* @brief Get net interface index from network stack implementation
*
* @note This index could be used in `setsockopt()` to bind socket with multicast interface
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* implementation specific index of interface represented with supplied esp_netif
*/
int esp_netif_get_netif_impl_index(esp_netif_t *esp_netif);
/**
* @brief Get net interface name from network stack implementation
*
* @note This name could be used in `setsockopt()` to bind socket with appropriate interface
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] name Interface name as specified in underlying TCP/IP stack. Note that the
* actual name will be copied to the specified buffer, which must be allocated to hold
* maximum interface name size (6 characters for lwIP)
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
*/
esp_err_t esp_netif_get_netif_impl_name(esp_netif_t *esp_netif, char* name);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_NET_DHCP ESP-NETIF DHCP Settings
* @brief Network stack related interface to DHCP client and server
*/
/** @addtogroup ESP_NETIF_NET_DHCP
* @{
*/
/**
* @brief Set or Get DHCP server option
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] opt_op ESP_NETIF_OP_SET to set an option, ESP_NETIF_OP_GET to get an option.
* @param[in] opt_id Option index to get or set, must be one of the supported enum values.
* @param[inout] opt_val Pointer to the option parameter.
* @param[in] opt_len Length of the option parameter.
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STOPPED
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STARTED
*/
esp_err_t
esp_netif_dhcps_option(esp_netif_t *esp_netif, esp_netif_dhcp_option_mode_t opt_op, esp_netif_dhcp_option_id_t opt_id,
void *opt_val, uint32_t opt_len);
/**
* @brief Set or Get DHCP client option
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] opt_op ESP_NETIF_OP_SET to set an option, ESP_NETIF_OP_GET to get an option.
* @param[in] opt_id Option index to get or set, must be one of the supported enum values.
* @param[inout] opt_val Pointer to the option parameter.
* @param[in] opt_len Length of the option parameter.
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STOPPED
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STARTED
*/
esp_err_t
esp_netif_dhcpc_option(esp_netif_t *esp_netif, esp_netif_dhcp_option_mode_t opt_op, esp_netif_dhcp_option_id_t opt_id,
void *opt_val, uint32_t opt_len);
/**
* @brief Start DHCP client (only if enabled in interface object)
*
* @note The default event handlers for the SYSTEM_EVENT_STA_CONNECTED and SYSTEM_EVENT_ETH_CONNECTED events call this function.
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STARTED
* - ESP_ERR_ESP_NETIF_DHCPC_START_FAILED
*/
esp_err_t esp_netif_dhcpc_start(esp_netif_t *esp_netif);
/**
* @brief Stop DHCP client (only if enabled in interface object)
*
* @note Calling action_netif_stop() will also stop the DHCP Client if it is running.
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STOPPED
* - ESP_ERR_ESP_NETIF_IF_NOT_READY
*/
esp_err_t esp_netif_dhcpc_stop(esp_netif_t *esp_netif);
/**
* @brief Get DHCP client status
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] status If successful, the status of DHCP client will be returned in this argument.
*
* @return
* - ESP_OK
*/
esp_err_t esp_netif_dhcpc_get_status(esp_netif_t *esp_netif, esp_netif_dhcp_status_t *status);
/**
* @brief Get DHCP Server status
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] status If successful, the status of the DHCP server will be returned in this argument.
*
* @return
* - ESP_OK
*/
esp_err_t esp_netif_dhcps_get_status(esp_netif_t *esp_netif, esp_netif_dhcp_status_t *status);
/**
* @brief Start DHCP server (only if enabled in interface object)
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STARTED
*/
esp_err_t esp_netif_dhcps_start(esp_netif_t *esp_netif);
/**
* @brief Stop DHCP server (only if enabled in interface object)
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
* - ESP_ERR_ESP_NETIF_DHCP_ALREADY_STOPPED
* - ESP_ERR_ESP_NETIF_IF_NOT_READY
*/
esp_err_t esp_netif_dhcps_stop(esp_netif_t *esp_netif);
/**
* @brief Populate IP addresses of clients connected to DHCP server listed by their MAC addresses
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] num Number of clients with specified MAC addresses in the array of pairs
* @param[in,out] mac_ip_pair Array of pairs of MAC and IP addresses (MAC are inputs, IP outputs)
* @return
* - ESP_OK on success
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS on invalid params
* - ESP_ERR_NOT_SUPPORTED if DHCP server not enabled
*/
esp_err_t esp_netif_dhcps_get_clients_by_mac(esp_netif_t *esp_netif, int num, esp_netif_pair_mac_ip_t *mac_ip_pair);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_NET_DNS ESP-NETIF DNS Settings
* @brief Network stack related interface to NDS
*/
/** @addtogroup ESP_NETIF_NET_DNS
* @{
*/
/**
* @brief Set DNS Server information
*
* This function behaves differently if DHCP server or client is enabled
*
* If DHCP client is enabled, main and backup DNS servers will be updated automatically
* from the DHCP lease if the relevant DHCP options are set. Fallback DNS Server is never updated from the DHCP lease
* and is designed to be set via this API.
* If DHCP client is disabled, all DNS server types can be set via this API only.
*
* If DHCP server is enabled, the Main DNS Server setting is used by the DHCP server to provide a DNS Server option
* to DHCP clients (Wi-Fi stations).
* - The default Main DNS server is typically the IP of the DHCP server itself.
* - This function can override it by setting server type ESP_NETIF_DNS_MAIN.
* - Other DNS Server types are not supported for the DHCP server.
* - To propagate the DNS info to client, please stop the DHCP server before using this API.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] type Type of DNS Server to set: ESP_NETIF_DNS_MAIN, ESP_NETIF_DNS_BACKUP, ESP_NETIF_DNS_FALLBACK
* @param[in] dns DNS Server address to set
*
* @return
* - ESP_OK on success
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS invalid params
*/
esp_err_t esp_netif_set_dns_info(esp_netif_t *esp_netif, esp_netif_dns_type_t type, esp_netif_dns_info_t *dns);
/**
* @brief Get DNS Server information
*
* Return the currently configured DNS Server address for the specified interface and Server type.
*
* This may be result of a previous call to esp_netif_set_dns_info(). If the interface's DHCP client is enabled,
* the Main or Backup DNS Server may be set by the current DHCP lease.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[in] type Type of DNS Server to get: ESP_NETIF_DNS_MAIN, ESP_NETIF_DNS_BACKUP, ESP_NETIF_DNS_FALLBACK
* @param[out] dns DNS Server result is written here on success
*
* @return
* - ESP_OK on success
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS invalid params
*/
esp_err_t esp_netif_get_dns_info(esp_netif_t *esp_netif, esp_netif_dns_type_t type, esp_netif_dns_info_t *dns);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_NET_IP ESP-NETIF IP address related interface
* @brief Network stack related interface to IP
*/
/** @addtogroup ESP_NETIF_NET_IP
* @{
*/
#if CONFIG_LWIP_IPV6
/**
* @brief Create interface link-local IPv6 address
*
* Cause the TCP/IP stack to create a link-local IPv6 address for the specified interface.
*
* This function also registers a callback for the specified interface, so that if the link-local address becomes
* verified as the preferred address then a SYSTEM_EVENT_GOT_IP6 event will be sent.
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return
* - ESP_OK
* - ESP_ERR_ESP_NETIF_INVALID_PARAMS
*/
esp_err_t esp_netif_create_ip6_linklocal(esp_netif_t *esp_netif);
/**
* @brief Get interface link-local IPv6 address
*
* If the specified interface is up and a preferred link-local IPv6 address
* has been created for the interface, return a copy of it.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] if_ip6 IPv6 information will be returned in this argument if successful.
*
* @return
* - ESP_OK
* - ESP_FAIL If interface is down, does not have a link-local IPv6 address,
* or the link-local IPv6 address is not a preferred address.
*/
esp_err_t esp_netif_get_ip6_linklocal(esp_netif_t *esp_netif, esp_ip6_addr_t *if_ip6);
/**
* @brief Get interface global IPv6 address
*
* If the specified interface is up and a preferred global IPv6 address
* has been created for the interface, return a copy of it.
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] if_ip6 IPv6 information will be returned in this argument if successful.
*
* @return
* - ESP_OK
* - ESP_FAIL If interface is down, does not have a global IPv6 address,
* or the global IPv6 address is not a preferred address.
*/
esp_err_t esp_netif_get_ip6_global(esp_netif_t *esp_netif, esp_ip6_addr_t *if_ip6);
/**
* @brief Get all IPv6 addresses of the specified interface
*
* @param[in] esp_netif Handle to esp-netif instance
* @param[out] if_ip6 Array of IPv6 addresses will be copied to the argument
*
* @return
* number of returned IPv6 addresses
*/
int esp_netif_get_all_ip6(esp_netif_t *esp_netif, esp_ip6_addr_t if_ip6[]);
#endif
/**
* @brief Sets IPv4 address to the specified octets
*
* @param[out] addr IP address to be set
* @param a the first octet (127 for IP 127.0.0.1)
* @param b
* @param c
* @param d
*/
void esp_netif_set_ip4_addr(esp_ip4_addr_t *addr, uint8_t a, uint8_t b, uint8_t c, uint8_t d);
/**
* @brief Converts numeric IP address into decimal dotted ASCII representation.
*
* @param addr ip address in network order to convert
* @param buf target buffer where the string is stored
* @param buflen length of buf
* @return either pointer to buf which now holds the ASCII
* representation of addr or NULL if buf was too small
*/
char *esp_ip4addr_ntoa(const esp_ip4_addr_t *addr, char *buf, int buflen);
/**
* @brief Ascii internet address interpretation routine
* The value returned is in network order.
*
* @param addr IP address in ascii representation (e.g. "127.0.0.1")
* @return ip address in network order
*/
uint32_t esp_ip4addr_aton(const char *addr);
/**
* @brief Converts Ascii internet IPv4 address into esp_ip4_addr_t
*
* @param[in] src IPv4 address in ascii representation (e.g. "127.0.0.1")
* @param[out] dst Address of the target esp_ip4_addr_t structure to receive converted address
* @return
* - ESP_OK on success
* - ESP_FAIL if conversion failed
* - ESP_ERR_INVALID_ARG if invalid parameter is passed into
*/
esp_err_t esp_netif_str_to_ip4(const char *src, esp_ip4_addr_t *dst);
/**
* @brief Converts Ascii internet IPv6 address into esp_ip4_addr_t
* Zeros in the IP address can be stripped or completely ommited: "2001:db8:85a3:0:0:0:2:1" or "2001:db8::2:1")
*
* @param[in] src IPv6 address in ascii representation (e.g. ""2001:0db8:85a3:0000:0000:0000:0002:0001")
* @param[out] dst Address of the target esp_ip6_addr_t structure to receive converted address
* @return
* - ESP_OK on success
* - ESP_FAIL if conversion failed
* - ESP_ERR_INVALID_ARG if invalid parameter is passed into
*/
esp_err_t esp_netif_str_to_ip6(const char *src, esp_ip6_addr_t *dst);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_CONVERT ESP-NETIF Conversion utilities
* @brief ESP-NETIF conversion utilities to related keys, flags, implementation handle
*/
/** @addtogroup ESP_NETIF_CONVERT
* @{
*/
/**
* @brief Gets media driver handle for this esp-netif instance
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return opaque pointer of related IO driver
*/
esp_netif_iodriver_handle esp_netif_get_io_driver(esp_netif_t *esp_netif);
/**
* @brief Searches over a list of created objects to find an instance with supplied if key
*
* @param if_key Textual description of network interface
*
* @return Handle to esp-netif instance
*/
esp_netif_t *esp_netif_get_handle_from_ifkey(const char *if_key);
/**
* @brief Returns configured flags for this interface
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return Configuration flags
*/
esp_netif_flags_t esp_netif_get_flags(esp_netif_t *esp_netif);
/**
* @brief Returns configured interface key for this esp-netif instance
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return Textual description of related interface
*/
const char *esp_netif_get_ifkey(esp_netif_t *esp_netif);
/**
* @brief Returns configured interface type for this esp-netif instance
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return Enumerated type of this interface, such as station, AP, ethernet
*/
const char *esp_netif_get_desc(esp_netif_t *esp_netif);
/**
* @brief Returns configured routing priority number
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return Integer representing the instance's route-prio, or -1 if invalid paramters
*/
int esp_netif_get_route_prio(esp_netif_t *esp_netif);
/**
* @brief Returns configured event for this esp-netif instance and supplied event type
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @param event_type (either get or lost IP)
*
* @return specific event id which is configured to be raised if the interface lost or acquired IP address
* -1 if supplied event_type is not known
*/
int32_t esp_netif_get_event_id(esp_netif_t *esp_netif, esp_netif_ip_event_type_t event_type);
/**
* @}
*/
/**
* @defgroup ESP_NETIF_LIST ESP-NETIF List of interfaces
* @brief APIs to enumerate all registered interfaces
*/
/** @addtogroup ESP_NETIF_LIST
* @{
*/
/**
* @brief Iterates over list of interfaces. Returns first netif if NULL given as parameter
*
* @param[in] esp_netif Handle to esp-netif instance
*
* @return First netif from the list if supplied parameter is NULL, next one otherwise
*/
esp_netif_t *esp_netif_next(esp_netif_t *esp_netif);
/**
* @brief Returns number of registered esp_netif objects
*
* @return Number of esp_netifs
*/
size_t esp_netif_get_nr_of_ifs(void);
/**
* @brief increase the reference counter of net stack buffer
*
* @param[in] netstack_buf the net stack buffer
*
*/
void esp_netif_netstack_buf_ref(void *netstack_buf);
/**
* @brief free the netstack buffer
*
* @param[in] netstack_buf the net stack buffer
*
*/
void esp_netif_netstack_buf_free(void *netstack_buf);
/**
* @}
*/
/** @addtogroup ESP_NETIF_TCPIP_EXEC
* @{
*/
/**
* @brief TCPIP thread safe callback used with esp_netif_tcpip_exec()
*/
typedef esp_err_t (*esp_netif_callback_fn)(void *ctx);
/**
* @brief Utility to execute the supplied callback in TCP/IP context
* @param fn Pointer to the callback
* @param ctx Parameter to the callback
* @return The error code (esp_err_t) returned by the callback
*/
esp_err_t esp_netif_tcpip_exec(esp_netif_callback_fn fn, void *ctx);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* _ESP_NETIF_H_ */
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