esp-idf/components/ethernet/Kconfig

menu Ethernet

config DMA_RX_BUF_NUM
    int "Number of DMA RX buffers"
    range 3 20
    default 10
    help
        Number of DMA receive buffers. Each buffer is 1600 bytes.
        Buffers are allocated statically.
        Larger number of buffers increases throughput.
        If enable flow ctrl, the num must be above 9 .

config DMA_TX_BUF_NUM
    int "Number of DMA TX buffers"
    range 3 20
    default 10
    help
        Number of DMA transmit buffers. Each buffer is 1600 bytes.
        Buffers are allocated statically.
        Larger number of buffers increases throughput.

config EMAC_L2_TO_L3_RX_BUF_MODE
    bool "Enable copy between Layer2 and Layer3"
    default y
    help
        If this options is selected, a copy of each received buffer will be created when
        passing it from the Ethernet MAC (L2) to the IP stack (L3). Otherwise, IP stack
        will receive pointers to the DMA buffers used by Ethernet MAC.

        When Ethernet MAC doesn't have any unused buffers left, it will drop incoming
        packets (flow control may help with this problem, to some extent).

        The buffers for the IP stack are allocated from the heap, so the total number of
        receive buffers is limited by the available heap size, if this option is selected.

        If unsure, choose n.

config EMAC_CHECK_LINK_PERIOD_MS
    int "Period(ms) of checking Ethernet linkup status"
    range 1000 5000
    default 2000
    help
        The emac driver uses an internal timer to check the ethernet linkup
        status. Here you should choose a valid the interval time.

config EMAC_TASK_PRIORITY
    int "EMAC_TASK_PRIORITY"
    default 20
    range 3 22
    help
        Ethernet MAC task priority.

config EMAC_TASK_STACK_SIZE
    int "Stack Size of EMAC Task"
    default 3072
    range 2000 8000
    help
        Stack Size of Ethernet MAC task.

endmenu