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authorDavid Gibson <david@gibson.dropbear.id.au>2022-10-19 11:43:47 +1100
committerStefano Brivio <sbrivio@redhat.com>2022-10-19 03:34:32 +0200
commitbd4be308fc92ed5d75ea45364a9f837d5c0fb0b2 (patch)
treeeaaaedcbf8e01177e072bb0dd168897a0cbb56ff /contrib
parent6905ac75ec6643fbc93963ad9ded4903e8eeebf0 (diff)
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Add csum_udp4() helper for calculating UDP over IPv4 checksums
At least two places in passt fill in UDP over IPv4 checksums, although since UDP checksums are optional with IPv4 that just amounts to storing a 0 (in tap_ip_send()) or leaving a 0 from an earlier initialization (in dhcp()). For consistency, add a helper for this "calculation". Just for the heck of it, add the option (compile time disabled for now) to calculate real UDP checksums. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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