efbd2805e2
Also limit suggested EMAC task priority range to 22, as the top priority should be used only by IPC tasks.
51 lines
1.6 KiB
Text
51 lines
1.6 KiB
Text
menuconfig ETHERNET
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bool "Ethernet"
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default n
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help
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Select this option to enable ethernet driver and show the submenu with ethernet features.
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config DMA_RX_BUF_NUM
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int "Number of DMA RX buffers"
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range 1 10
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default 10
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depends on ETHERNET
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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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config DMA_TX_BUF_NUM
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int "Number of DMA RX buffers"
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range 1 10
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default 10
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depends on ETHERNET
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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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depends on ETHERNET
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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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depends on ETHERNET
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help
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Ethernet MAC task priority.
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