linux-kernel - Re: [PATCH net-next 0/5] vsock/test: add recv_buf()/send_buf() utility functions and some improvements

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Date:   Fri, 15 Sep 2023 22:30:55 +0300
From:   Arseniy Krasnov <avkrasnov@...utedevices.com>
To:     Stefano Garzarella <sgarzare@...hat.com>, <netdev@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>,
        <virtualization@...ts.linux-foundation.org>, <oxffffaa@...il.com>,
        Bobby Eshleman <bobby.eshleman@...edance.com>
Subject: Re: [PATCH net-next 0/5] vsock/test: add recv_buf()/send_buf()
 utility functions and some improvements



On 15.09.2023 15:14, Stefano Garzarella wrote:
> We recently found that some tests were failing [1].
> 
> The problem was that we were not waiting for all the bytes correctly,
> so we had a partial read. I had initially suggested using MSG_WAITALL,
> but this could have timeout problems.
> 
> Since we already had send_byte() and recv_byte() that handled the timeout,
> but also the expected return value, I moved that code to two new functions
> that we can now use to send/receive generic buffers.
> 
> The last commit is just an improvement to a test I found difficult to
> understand while using the new functions.
> 
> @Arseniy a review and some testing are really appreciated :-)

Thanks for this cleanup of the tests, I reviewed this patchset and run local
testing, seems everything is ok! :)

Thanks, Arseniy

> 
> [1] https://lore.kernel.org/netdev/63xflnwiohdfo6m3vnrrxgv2ulplencpwug5qqacugqh7xxpu3@tsczkuqgwurb/
> 
> Stefano Garzarella (5):
>   vsock/test: add recv_buf() utility function
>   vsock/test: use recv_buf() in vsock_test.c
>   vsock/test: add send_buf() utility function
>   vsock/test: use send_buf() in vsock_test.c
>   vsock/test: track bytes in MSG_PEEK test for SOCK_SEQPACKET
> 
>  tools/testing/vsock/util.h       |   3 +
>  tools/testing/vsock/util.c       | 124 ++++++++++++--------
>  tools/testing/vsock/vsock_test.c | 187 ++++++-------------------------
>  3 files changed, 117 insertions(+), 197 deletions(-)
>