8000 when default data size is 2048, the umem->frame_size is illeagle · Issue #3611 · FDio/vpp · GitHub

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when default data size is 2048, the umem->frame_size is illeagle #3611

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tsinghai1982 opened this issue May 15, 2025 · 1 comment

tsinghai1982 commented

vpp/src/plugins/af_xdp/device.c

Line 306 in 659b78d

umem_config.frame_size =

umem->frame_size can only be 2K or 4K at the moment.
see https://www.kernel.org/doc/html/latest/networking/af_xdp.html#xdp-umem-reg-setsockopt

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tsinghai1982 commented

the real umem->frame_size will be (data-size2048 + headroom256), it's illeagle value for current linux.

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