Re: [PATCH net-next] selftests: net: Add TCP payload verification to udpgso_bench_rx

[Jiayuan Chen]

On 9/6/26 10:56 PM, shuo huang wrote:
> udpgso_bench_rx supports UDP payload verification but rejects the
> combination of TCP and verification mode. Its TCP receive path discards
> the payload, so it cannot check the data generated by udpgso_bench_tx.
>
> Read the TCP payload into a buffer when verification is requested
> and check it against the transmitter's repeating alphabetic
> pattern. Preserve the verification position across recv() calls
> because TCP does not preserve send boundaries. Restart the pattern
> at the payload length supplied with -l, matching the transmitter's
> pattern restart on each message.
>
> Require a nonzero -l value for TCP verification and retain the existing
> discard path when verification is disabled.
>
> Signed-off-by: shuo huang <f64116045@xxxxxxxxxxxxxx>


Reviewed-by: Jiayuan Chen <jiayuan.chen@xxxxxxxxx>