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46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
menu Ethernet
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config DMA_RX_BUF_NUM
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int "Number of DMA RX buffers"
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range 3 20
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default 10
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help
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Number of DMA receive buffers. Each buffer is 1600 bytes.
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Buffers are allocated statically.
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Larger number of buffers increases throughput.
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If enable flow ctrl, the num must be above 9 .
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config DMA_TX_BUF_NUM
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int "Number of DMA RX buffers"
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range 3 20
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default 10
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help
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Number of DMA transmit buffers. Each buffer is 1600 bytes.
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Buffers are allocated statically.
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Larger number of buffers increases throughput.
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config EMAC_L2_TO_L3_RX_BUF_MODE
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bool "Enable copy between Layer2 and Layer3"
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default n
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help
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If this options is selected, a copy of each received buffer will be created when
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passing it from the Ethernet MAC (L2) to the IP stack (L3). Otherwise, IP stack
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will receive pointers to the DMA buffers used by Ethernet MAC.
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When Ethernet MAC doesn't have any unused buffers left, it will drop incomming
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packets (flow control may help with this problem, to some extent).
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The buffers for the IP stack are allocated from the heap, so the total number of
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receive buffers is limited by the available heap size, if this option is selected.
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If unsure, choose n.
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config EMAC_TASK_PRIORITY
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int "EMAC_TASK_PRIORITY"
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default 20
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range 3 22
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help
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Ethernet MAC task priority.
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endmenu
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