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- 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 n
- 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 incomming
- 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_TASK_PRIORITY
- int "EMAC_TASK_PRIORITY"
- default 20
- range 3 22
- help
- Ethernet MAC task priority.
- endmenu
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