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Nimrod Oren
dfc0770433
Data adjustment cases failed with "Data exchange failed" when using IPv4
because the program did not update the IP and UDP checksums in the IPv4
branch. The issue was masked when both IPv4 and IPv6 were configured,
since the test harness prefers IPv6.
While here, generalize csum_fold_helper() to fold twice so it works for
any 32-bit input.
Fixes: 0b65cfcef9 ("selftests: drv-net: Test tail-adjustment support")
Reviewed-by: Carolina Jubran <[email protected]>
Reviewed-by: Dragos Tatulea <[email protected]>
Signed-off-by: Nimrod Oren <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>