linux-kernel - Re: [PATCH net-next v3 11/12] test/vsock: MSG_ZEROCOPY support for vsock

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Message-ID: <afcyfpp6axca3d2ebtrp44o4wqxkutbn6eixv2gnpa2r3ievhr@yx2462i5p3e7>
Date:   Mon, 9 Oct 2023 17:17:33 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Arseniy Krasnov <avkrasnov@...utedevices.com>
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Bobby Eshleman <bobby.eshleman@...edance.com>,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...rdevices.ru, oxffffaa@...il.com
Subject: Re: [PATCH net-next v3 11/12] test/vsock: MSG_ZEROCOPY support for
 vsock_perf

On Sat, Oct 07, 2023 at 08:21:38PM +0300, Arseniy Krasnov wrote:
>To use this option pass '--zerocopy' parameter:
>
>./vsock_perf --zerocopy --sender <cid> ...
>
>With this option MSG_ZEROCOPY flag will be passed to the 'send()' call.
>
>Signed-off-by: Arseniy Krasnov <avkrasnov@...utedevices.com>
>---
> Changelog:
> v1 -> v2:
>  * Move 'SOL_VSOCK' and 'VSOCK_RECVERR' from 'util.c' to 'util.h'.
> v2 -> v3:
>  * Use 'msg_zerocopy_common.h' for MSG_ZEROCOPY related things.
>  * Rename '--zc' option to '--zerocopy'.
>  * Add detail in help that zerocopy mode is for sender mode only.
>
> tools/testing/vsock/vsock_perf.c | 80 ++++++++++++++++++++++++++++----
> 1 file changed, 71 insertions(+), 9 deletions(-)

Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>