Re: [RFC PATCH v6 17/22] virtio/vsock: SEQPACKET feature bit support

From: Stefano Garzarella <sgarzare@redhat.com>
To: Arseny Krasnov <arseny.krasnov@kaspersky.com>
Cc: Andra Paraschiv <andraprs@amazon.com>,
	kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	netdev@vger.kernel.org, stsp2@yandex.ru,
	linux-kernel@vger.kernel.org,
	virtualization@lists.linux-foundation.org, oxffffaa@gmail.com,
	Norbert Slusarek <nslusarek@gmx.net>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Colin Ian King <colin.king@canonical.com>,
	Jakub Kicinski <kuba@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jorgen Hansen <jhansen@vmware.com>
Subject: Re: [RFC PATCH v6 17/22] virtio/vsock: SEQPACKET feature bit support
Date: Mon, 15 Mar 2021 12:29:27 +0100	[thread overview]
Message-ID: <20210315112927.4aygxeby2f7p3mju@steredhat> (raw)
In-Reply-To: <20210307180404.3466602-1-arseny.krasnov@kaspersky.com>

On Sun, Mar 07, 2021 at 09:04:01PM +0300, Arseny Krasnov wrote:
>This adds handling of SEQPACKET bit: guest tries to negotiate it
>with vhost.
>
>Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
>---
> net/vmw_vsock/virtio_transport.c | 5 +++++
> 1 file changed, 5 insertions(+)

Also for this patch I think is better to move after we set the 
seqpackets ops.

>
>diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
>index 2700a63ab095..41c5d0a31e08 100644
>--- a/net/vmw_vsock/virtio_transport.c
>+++ b/net/vmw_vsock/virtio_transport.c
>@@ -612,6 +612,10 @@ static int virtio_vsock_probe(struct virtio_device *vdev)
> 	rcu_assign_pointer(the_virtio_vsock, vsock);
>
> 	mutex_unlock(&the_virtio_vsock_mutex);
>+
>+	if (vdev->features & (1ULL << VIRTIO_VSOCK_F_SEQPACKET))
>+		virtio_transport.seqpacket_allow = true;
>+
> 	return 0;
>
> out:
>@@ -695,6 +699,7 @@ static struct virtio_device_id id_table[] = {
> };
>
> static unsigned int features[] = {
>+	VIRTIO_VSOCK_F_SEQPACKET
> };
>
> static struct virtio_driver virtio_vsock_driver = {
>-- 
>2.25.1
>

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