xsk: Add option to calculate TX checksum in SW

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For XDP_COPY mode, add a UMEM option XDP_UMEM_TX_SW_CSUM
to call skb_checksum_help in transmit path. Might be useful
to debugging issues with real hardware. I also use this mode
in the selftests.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20231127190319.1190813-9-sdf@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Stanislav Fomichev 2023-11-27 11:03:14 -08:00 • committed by Alexei Starovoitov

parent ce59f9686e

commit 11614723af

7 changed files with 37 additions and 3 deletions

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8

include/uapi/linux/if_xdp.h

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