On 4/27/21 4:57 PM, Olivier Matz wrote:
> Since commit d5df2ae0428a ("net: fix unneeded replacement of TCP
> checksum 0"), the functions rte_ipv4_udptcp_cksum() or
> rte_ipv6_udptcp_cksum() can return either 0x0000 or 0xffff when used to
> verify a packet containing a valid checksum.
>
> This new behavior broke the checksum verification in tap driver for TCP
> packets: these packets are marked with PKT_RX_L4_CKSUM_BAD.
>
> Fix this by checking the 2 possible values. A next commit will introduce
> a checksum verification helper to simplify this a bit.
>
> Fixes: d5df2ae0428a ("net: fix unneeded replacement of TCP checksum 0")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Olivier Matz <olivier.m...@6wind.com>
Acked-by: Andrew Rybchenko <andrew.rybche...@oktetlabs.ru>
