esp-idf/components/esp_wifi/Kconfig

menu "Wi-Fi"
    visible if !IDF_TARGET_ESP32H4

    config ESP_WIFI_ENABLED
        bool
        default y if SOC_WIFI_SUPPORTED

    config ESP_WIFI_STATIC_RX_BUFFER_NUM
        int "Max number of WiFi static RX buffers"
        range 2 25 if !SOC_WIFI_HE_SUPPORT
        range 2 128 if SOC_WIFI_HE_SUPPORT
        default 10 if !SPIRAM_TRY_ALLOCATE_WIFI_LWIP
        default 16 if SPIRAM_TRY_ALLOCATE_WIFI_LWIP
        help
            Set the number of WiFi static RX buffers. Each buffer takes approximately 1.6KB of RAM.
            The static rx buffers are allocated when esp_wifi_init is called, they are not freed
            until esp_wifi_deinit is called.

            WiFi hardware use these buffers to receive all 802.11 frames.
            A higher number may allow higher throughput but increases memory use. If ESP_WIFI_AMPDU_RX_ENABLED
            is enabled, this value is recommended to set equal or bigger than ESP_WIFI_RX_BA_WIN in order to
            achieve better throughput and compatibility with both stations and APs.

    config ESP_WIFI_DYNAMIC_RX_BUFFER_NUM
        int "Max number of WiFi dynamic RX buffers"
        range 0 128 if !LWIP_WND_SCALE
        range 0 1024 if LWIP_WND_SCALE
        default 32
        help
            Set the number of WiFi dynamic RX buffers, 0 means unlimited RX buffers will be allocated
            (provided sufficient free RAM). The size of each dynamic RX buffer depends on the size of
            the received data frame.

            For each received data frame, the WiFi driver makes a copy to an RX buffer and then delivers
            it to the high layer TCP/IP stack. The dynamic RX buffer is freed after the higher layer has
            successfully received the data frame.

            For some applications, WiFi data frames may be received faster than the application can
            process them. In these cases we may run out of memory if RX buffer number is unlimited (0).

            If a dynamic RX buffer limit is set, it should be at least the number of static RX buffers.

    choice ESP_WIFI_TX_BUFFER
        prompt "Type of WiFi TX buffers"
        default ESP_WIFI_DYNAMIC_TX_BUFFER
        help
            Select type of WiFi TX buffers:

            If "Static" is selected, WiFi TX buffers are allocated when WiFi is initialized and released
            when WiFi is de-initialized. The size of each static TX buffer is fixed to about 1.6KB.

            If "Dynamic" is selected, each WiFi TX buffer is allocated as needed when a data frame is
            delivered to the Wifi driver from the TCP/IP stack. The buffer is freed after the data frame
            has been sent by the WiFi driver. The size of each dynamic TX buffer depends on the length
            of each data frame sent by the TCP/IP layer.

            If PSRAM is enabled, "Static" should be selected to guarantee enough WiFi TX buffers.
            If PSRAM is disabled, "Dynamic" should be selected to improve the utilization of RAM.

        config ESP_WIFI_STATIC_TX_BUFFER
            bool "Static"
        config ESP_WIFI_DYNAMIC_TX_BUFFER
            bool "Dynamic"
            depends on !SPIRAM_USE_MALLOC
    endchoice

    config ESP_WIFI_TX_BUFFER_TYPE
        int
        default 0 if ESP_WIFI_STATIC_TX_BUFFER
        default 1 if ESP_WIFI_DYNAMIC_TX_BUFFER

    config ESP_WIFI_STATIC_TX_BUFFER_NUM
        int "Max number of WiFi static TX buffers"
        depends on ESP_WIFI_STATIC_TX_BUFFER
        range 1 64
        default 16
        help
            Set the number of WiFi static TX buffers. Each buffer takes approximately 1.6KB of RAM.
            The static RX buffers are allocated when esp_wifi_init() is called, they are not released
            until esp_wifi_deinit() is called.

            For each transmitted data frame from the higher layer TCP/IP stack, the WiFi driver makes a
            copy of it in a TX buffer.  For some applications especially UDP applications, the upper
            layer can deliver frames faster than WiFi layer can transmit. In these cases, we may run out
            of TX buffers.

    config ESP_WIFI_CACHE_TX_BUFFER_NUM
        int "Max number of WiFi cache TX buffers"
        depends on SPIRAM
        range 16 128
        default 32
        help
            Set the number of WiFi cache TX buffer number.

            For each TX packet from uplayer, such as LWIP etc, WiFi driver needs to allocate a static TX
            buffer and makes a copy of uplayer packet. If WiFi driver fails to allocate the static TX buffer,
            it caches the uplayer packets to a dedicated buffer queue, this option is used to configure the
            size of the cached TX queue.

    config ESP_WIFI_DYNAMIC_TX_BUFFER_NUM
        int "Max number of WiFi dynamic TX buffers"
        depends on ESP_WIFI_DYNAMIC_TX_BUFFER
        range 1 128
        default 32
        help
            Set the number of WiFi dynamic TX buffers. The size of each dynamic TX buffer is not fixed,
            it depends on the size of each transmitted data frame.

            For each transmitted frame from the higher layer TCP/IP stack, the WiFi driver makes a copy
            of it in a TX buffer. For some applications, especially UDP applications, the upper layer
            can deliver frames faster than WiFi layer can transmit. In these cases, we may run out of TX
            buffers.

    config ESP_WIFI_CSI_ENABLED
        bool "WiFi CSI(Channel State Information)"
        depends on SOC_WIFI_CSI_SUPPORT
        default n
        help
            Select this option to enable CSI(Channel State Information) feature. CSI takes about
            CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM KB of RAM. If CSI is not used, it is better to disable
            this feature in order to save memory.

    config ESP_WIFI_AMPDU_TX_ENABLED
        bool "WiFi AMPDU TX"
        default y
        help
            Select this option to enable AMPDU TX feature


    config ESP_WIFI_TX_BA_WIN
        int "WiFi AMPDU TX BA window size"
        depends on ESP_WIFI_AMPDU_TX_ENABLED
        range 2 32 if !SOC_WIFI_HE_SUPPORT
        range 2 64 if SOC_WIFI_HE_SUPPORT
        default 6
        help
            Set the size of WiFi Block Ack TX window. Generally a bigger value means higher throughput but
            more memory. Most of time we should NOT change the default value unless special reason, e.g.
            test the maximum UDP TX throughput with iperf etc. For iperf test in shieldbox, the recommended
            value is 9~12.

    config ESP_WIFI_AMPDU_RX_ENABLED
        bool "WiFi AMPDU RX"
        default y
        help
            Select this option to enable AMPDU RX feature

    config ESP_WIFI_RX_BA_WIN
        int "WiFi AMPDU RX BA window size"
        depends on ESP_WIFI_AMPDU_RX_ENABLED
        range 2 32 if !SOC_WIFI_HE_SUPPORT
        range 2 64 if SOC_WIFI_HE_SUPPORT
        default 6 if !SPIRAM_TRY_ALLOCATE_WIFI_LWIP
        default 16 if SPIRAM_TRY_ALLOCATE_WIFI_LWIP
        help
            Set the size of WiFi Block Ack RX window. Generally a bigger value means higher throughput and better
            compatibility but more memory. Most of time we should NOT change the default value unless special
            reason, e.g. test the maximum UDP RX throughput with iperf etc. For iperf test in shieldbox, the
            recommended value is 9~12. If PSRAM is used and WiFi memory is prefered to allocat in PSRAM first,
            the default and minimum value should be 16 to achieve better throughput and compatibility with both
            stations and APs.

    config ESP_WIFI_AMSDU_TX_ENABLED
        bool "WiFi AMSDU TX"
        depends on SPIRAM
        default n
        help
            Select this option to enable AMSDU TX feature

    config ESP_WIFI_NVS_ENABLED
        bool "WiFi NVS flash"
        default y
        help
            Select this option to enable WiFi NVS flash

    choice ESP_WIFI_TASK_CORE_ID
        depends on !FREERTOS_UNICORE
        prompt "WiFi Task Core ID"
        default ESP_WIFI_TASK_PINNED_TO_CORE_0
        help
            Pinned WiFi task to core 0 or core 1.

        config ESP_WIFI_TASK_PINNED_TO_CORE_0
            bool "Core 0"
        config ESP_WIFI_TASK_PINNED_TO_CORE_1
            bool "Core 1"
    endchoice

    config ESP_WIFI_SOFTAP_BEACON_MAX_LEN
        int "Max length of WiFi SoftAP Beacon"
        range 752 1256
        default 752
        help
            ESP-MESH utilizes beacon frames to detect and resolve root node conflicts (see documentation). However the
            default length of a beacon frame can simultaneously hold only five root node identifier structures,
            meaning that a root node conflict of up to five nodes can be detected at one time. In the occurence of
            more root nodes conflict involving more than five root nodes, the conflict resolution process will detect
            five of the root nodes, resolve the conflict, and re-detect more root nodes. This process will repeat
            until all root node conflicts are resolved. However this process can generally take a very long time.

            To counter this situation, the beacon frame length can be increased such that more root nodes can be
            detected simultaneously. Each additional root node will require 36 bytes and should be added ontop of the
            default beacon frame length of
            752 bytes. For example, if you want to detect 10 root nodes simultaneously, you need to set the beacon
            frame length as
            932 (752+36*5).

            Setting a longer beacon length also assists with debugging as the conflicting root nodes can be identified
            more quickly.

    config ESP_WIFI_MGMT_SBUF_NUM
        int "WiFi mgmt short buffer number"
        range 6 32
        default 32
        help
            Set the number of WiFi management short buffer.

    config ESP_WIFI_IRAM_OPT
        bool "WiFi IRAM speed optimization"
        default n if (BT_ENABLED && SPIRAM && IDF_TARGET_ESP32)
        default y
        help
            Select this option to place frequently called Wi-Fi library functions in IRAM.
            When this option is disabled, more than 10Kbytes of IRAM memory will be saved
            but Wi-Fi throughput will be reduced.

    config ESP_WIFI_RX_IRAM_OPT
        bool "WiFi RX IRAM speed optimization"
        default n if (BT_ENABLED && SPIRAM && IDF_TARGET_ESP32)
        default y
        help
            Select this option to place frequently called Wi-Fi library RX functions in IRAM.
            When this option is disabled, more than 17Kbytes of IRAM memory will be saved
            but Wi-Fi performance will be reduced.

    config ESP_WIFI_ENABLE_WPA3_SAE
        bool "Enable WPA3-Personal"
        default y
        depends on ESP_WIFI_MBEDTLS_CRYPTO
        help
            Select this option to allow the device to establish a WPA3-Personal connection with eligible AP's.
            PMF (Protected Management Frames) is a prerequisite feature for a WPA3 connection, it needs to be
            explicitly configured before attempting connection. Please refer to the Wi-Fi Driver API Guide for details.

    config ESP_WIFI_ENABLE_SAE_PK
        bool "Enable SAE-PK"
        default y
        depends on ESP_WIFI_ENABLE_WPA3_SAE
        help
            Select this option to enable SAE-PK

    config ESP_WIFI_SOFTAP_SAE_SUPPORT
        bool "Enable WPA3 Personal(SAE) SoftAP"
        default y
        depends on ESP_WIFI_ENABLE_WPA3_SAE
        depends on ESP_WIFI_SOFTAP_SUPPORT
        help
            Select this option to enable SAE support in softAP mode.

    config ESP_WIFI_ENABLE_WPA3_OWE_STA
        bool "Enable OWE STA"
        default y
        select ESP_WIFI_MBEDTLS_CRYPTO
        help
            Select this option to allow the device to establish OWE connection with eligible AP's.
            PMF (Protected Management Frames) is a prerequisite feature for a WPA3 connection, it needs to be
            explicitly configured before attempting connection. Please refer to the Wi-Fi Driver API Guide for details.

    config ESP_WIFI_SLP_IRAM_OPT
        bool "WiFi SLP IRAM speed optimization"
        select PM_SLP_DEFAULT_PARAMS_OPT
        select PERIPH_CTRL_FUNC_IN_IRAM
        help
            Select this option to place called Wi-Fi library TBTT process and receive beacon functions in IRAM.
            Some functions can be put in IRAM either by ESP_WIFI_IRAM_OPT and ESP_WIFI_RX_IRAM_OPT, or this one.
            If already enabled ESP_WIFI_IRAM_OPT, the other 7.3KB IRAM memory would be taken by this option.
            If already enabled ESP_WIFI_RX_IRAM_OPT, the other 1.3KB IRAM memory would be taken by this option.
            If neither of them are enabled, the other 7.4KB IRAM memory would be taken by this option.
            Wi-Fi power-save mode average current would be reduced if this option is enabled.

    config ESP_WIFI_SLP_DEFAULT_MIN_ACTIVE_TIME
        int "Minimum active time"
        range 8 60
        default 50
        depends on ESP_WIFI_SLP_IRAM_OPT
        help
            The minimum timeout for waiting to receive data, unit: milliseconds.

    config ESP_WIFI_SLP_DEFAULT_MAX_ACTIVE_TIME
        int "Maximum keep alive time"
        range 10 60
        default 10
        depends on ESP_WIFI_SLP_IRAM_OPT
        help
            The maximum time that wifi keep alive, unit: seconds.

    config ESP_WIFI_FTM_ENABLE
        bool "WiFi FTM"
        default n
        depends on SOC_WIFI_FTM_SUPPORT
        help
            Enable feature Fine Timing Measurement for calculating WiFi Round-Trip-Time (RTT).

    config ESP_WIFI_FTM_INITIATOR_SUPPORT
        bool "FTM Initiator support"
        default y
        depends on ESP_WIFI_FTM_ENABLE

    config ESP_WIFI_FTM_RESPONDER_SUPPORT
        bool "FTM Responder support"
        default y
        depends on ESP_WIFI_FTM_ENABLE

    config ESP_WIFI_STA_DISCONNECTED_PM_ENABLE
        bool "Power Management for station at disconnected"
        default y
        help
            Select this option to enable power_management for station when disconnected.
            Chip will do modem-sleep when rf module is not in use any more.

    config ESP_WIFI_GCMP_SUPPORT
        bool "WiFi GCMP Support(GCMP128 and GCMP256)"
        default n
        depends on SOC_WIFI_GCMP_SUPPORT
        help
            Select this option to enable GCMP support. GCMP support is compulsory for WiFi Suite-B support.

    config ESP_WIFI_GMAC_SUPPORT
        bool "WiFi GMAC Support(GMAC128 and GMAC256)"
        default n
        help
            Select this option to enable GMAC support. GMAC support is compulsory for WiFi 192 bit certification.

    config ESP_WIFI_SOFTAP_SUPPORT
        bool "WiFi SoftAP Support"
        default y
        help
            WiFi module can be compiled without SoftAP to save code size.

    config ESP_WIFI_ENHANCED_LIGHT_SLEEP
        bool "WiFi modem automatically receives the beacon"
        default n
        depends on ESP_PHY_MAC_BB_PD && SOC_PM_SUPPORT_BEACON_WAKEUP
        help
            The wifi modem automatically receives the beacon frame during light sleep.

    config ESP_WIFI_SLP_BEACON_LOST_OPT
        bool "Wifi sleep optimize when beacon lost"
        help
            Enable wifi sleep optimization when beacon loss occurs and immediately enter
            sleep mode when the WiFi module detects beacon loss.

    config ESP_WIFI_SLP_BEACON_LOST_TIMEOUT
        int "Beacon loss timeout"
        range 5 100
        default 10
        depends on ESP_WIFI_SLP_BEACON_LOST_OPT
        help
            Timeout time for close rf phy when beacon loss occurs, Unit: 1024 microsecond.

    config ESP_WIFI_SLP_BEACON_LOST_THRESHOLD
        int "Maximum number of consecutive lost beacons allowed"
        range 0 8
        default 3
        depends on ESP_WIFI_SLP_BEACON_LOST_OPT
        help
            Maximum number of consecutive lost beacons allowed, WiFi keeps Rx state when
            the number of consecutive beacons lost is greater than the given threshold.

    config ESP_WIFI_SLP_PHY_ON_DELTA_EARLY_TIME
        int "Delta early time for RF PHY on"
        range 0 100
        default 2
        depends on ESP_WIFI_SLP_BEACON_LOST_OPT && SOC_WIFI_SUPPORT_VARIABLE_BEACON_WINDOW
        help
            Delta early time for rf phy on, When the beacon is lost, the next rf phy on will
            be earlier the time specified by the configuration item, Unit: 32 microsecond.

    config ESP_WIFI_SLP_PHY_OFF_DELTA_TIMEOUT_TIME
        int "Delta timeout time for RF PHY off"
        range 0 8
        default 2
        depends on ESP_WIFI_SLP_BEACON_LOST_OPT && SOC_WIFI_SUPPORT_VARIABLE_BEACON_WINDOW
        help
            Delta timeout time for rf phy off, When the beacon is lost, the next rf phy off will
            be delayed for the time specified by the configuration item. Unit: 1024 microsecond.

    config ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM
        int "Maximum espnow encrypt peers number"
        range 0 4 if IDF_TARGET_ESP32C2
        range 0 17 if (!IDF_TARGET_ESP32C2)
        default 2 if IDF_TARGET_ESP32C2
        default 7 if (!IDF_TARGET_ESP32C2)
        help
            Maximum number of encrypted peers supported by espnow.
            The number of hardware keys for encryption is fixed. And the espnow and SoftAP share the same
            hardware keys. So this configuration will affect the maximum connection number of SoftAP.
            Maximum espnow encrypted peers number + maximum number of connections of SoftAP = Max hardware keys number.
            When using ESP mesh, this value should be set to a maximum of 6.

    config ESP_WIFI_NAN_ENABLE
        bool "WiFi Aware"
        default n
        depends on SOC_WIFI_NAN_SUPPORT
        help
            Enable WiFi Aware (NAN) feature.

    config ESP_WIFI_ENABLE_WIFI_TX_STATS
        bool "Enable Wi-Fi transmission statistics"
        depends on SOC_WIFI_HE_SUPPORT
        default "y"
        help
            Enable Wi-Fi transmission statistics. Total support 4 access category. Each access category
            will use 346 bytes memory.

    config ESP_WIFI_MBEDTLS_CRYPTO
        bool "Use MbedTLS crypto APIs"
        default y
        select MBEDTLS_AES_C
        select MBEDTLS_ECP_C
        select MBEDTLS_ECDH_C
        select MBEDTLS_ECDSA_C
        select MBEDTLS_TLS_ENABLED
        help
            Select this option to use MbedTLS crypto APIs which utilize hardware acceleration.

    if ESP_WIFI_MBEDTLS_CRYPTO
        config ESP_WIFI_MBEDTLS_TLS_CLIENT
            bool "Use MbedTLS TLS client for WiFi Enterprise connection"
            default y
            select MBEDTLS_TLS_ENABLED
            help
                Select this option to use MbedTLS TLS client for WPA2 enterprise connection.
                Please note that from MbedTLS-3.0 onwards, MbedTLS does not support SSL-3.0
                TLS-v1.0, TLS-v1.1 versions. Incase your server is using one of these version,
                it is advisable to update your server.
                Please disable this option for compatibilty with older TLS versions.
    endif

    config ESP_WIFI_WAPI_PSK
        bool "Enable WAPI PSK support"
        depends on SOC_WIFI_WAPI_SUPPORT
        default n
        help
            Select this option to enable WAPI-PSK
            which is a Chinese National Standard Encryption for Wireless LANs (GB 15629.11-2003).

    config ESP_WIFI_SUITE_B_192
        bool "Enable NSA suite B support with 192 bit key"
        default n
        select ESP_WIFI_GCMP_SUPPORT
        select ESP_WIFI_GMAC_SUPPORT
        help
            Select this option to enable 192 bit NSA suite-B.
            This is necessary to support WPA3 192 bit security.

    config ESP_WIFI_11KV_SUPPORT
        bool "Enable 802.11k, 802.11v APIs Support"
        default n
        help
            Select this option to enable 802.11k 802.11v APIs(RRM and BTM support).
            Only APIs which are helpful for network assisted roaming
            are supported for now.
            Enable this option with BTM and RRM enabled in sta config
            to make device ready for network assisted roaming.
            BTM: BSS transition management enables an AP to request a station to transition
            to a specific AP, or to indicate to a station a set of preferred APs.
            RRM: Radio measurements enable STAs to understand the radio environment,
            it enables STAs to observe and gather data on radio link performance
            and on the radio environment. Current implementation adds beacon report,
            link measurement, neighbor report.

    config ESP_WIFI_SCAN_CACHE
        bool "Keep scan results in cache"
        depends on ESP_WIFI_11KV_SUPPORT
        default n
        help
            Keep scan results in cache, if not enabled, those
            will be flushed immediately.

    config ESP_WIFI_MBO_SUPPORT
        bool "Enable Multi Band Operation Certification Support"
        default n
        select ESP_WIFI_11KV_SUPPORT
        select ESP_WIFI_SCAN_CACHE
        help
            Select this option to enable WiFi Multiband operation certification support.

    config ESP_WIFI_DPP_SUPPORT
        bool "Enable DPP support"
        default n
        select ESP_WIFI_MBEDTLS_CRYPTO
        help
            Select this option to enable WiFi Easy Connect Support.

    config ESP_WIFI_11R_SUPPORT
        bool "Enable 802.11R (Fast Transition) Support"
        default n
        help
            Select this option to enable WiFi Fast Transition Support.

    config ESP_WIFI_WPS_SOFTAP_REGISTRAR
        bool "Add WPS Registrar support in SoftAP mode"
        depends on ESP_WIFI_SOFTAP_SUPPORT
        default n
        help
            Select this option to enable WPS registrar support in softAP mode.

    config ESP_WIFI_ENABLE_WIFI_RX_STATS
        bool "Enable Wi-Fi reception statistics"
        depends on SOC_WIFI_HE_SUPPORT
        default "y"
        help
            Enable Wi-Fi reception statistics. Total support 2 access category. Each access category
            will use 190 bytes memory.

    config ESP_WIFI_ENABLE_WIFI_RX_MU_STATS
        bool "Enable Wi-Fi DL MU-MIMO and DL OFDMA reception statistics"
        depends on ESP_WIFI_ENABLE_WIFI_RX_STATS
        default "y"
        help
            Enable Wi-Fi DL MU-MIMO and DL OFDMA reception statistics. Will use 10932 bytes memory.

    menu "WPS Configuration Options"
        config ESP_WIFI_WPS_STRICT
            bool "Strictly validate all WPS attributes"
            default n
            help
                Select this option to enable validate each WPS attribute
                rigorously. Disabling this add the workaorunds with various APs.
                Enabling this may cause inter operability issues with some APs.

        config ESP_WIFI_WPS_PASSPHRASE
            bool "Get WPA2 passphrase in WPS config"
            default n
            help
                Select this option to get passphrase during WPS configuration.
                This option fakes the virtual display capabilites to get the
                configuration in passphrase mode.
                Not recommanded to be used since WPS credentials should not
                be shared to other devices, making it in readable format increases
                that risk, also passphrase requires pbkdf2 to convert in psk.

    endmenu # "WPS Configuration Options"


    config ESP_WIFI_DEBUG_PRINT
        bool "Print debug messages from WPA Supplicant"
        default n
        help
            Select this option to print logging information from WPA supplicant,
            this includes handshake information and key hex dumps depending
            on the project logging level.

            Enabling this could increase the build size ~60kb
            depending on the project logging level.

    config ESP_WIFI_TESTING_OPTIONS
        bool "Add DPP testing code"
        default n
        help
            Select this to enable unity test for DPP.

endmenu # Wi-Fi