linux-kernel - [PATCH net v2 3/3] vsock/virtio: read the negotiated features before using VQs

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Message-Id: <20220323084954.11769-4-sgarzare@redhat.com>
Date:   Wed, 23 Mar 2022 09:49:54 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Arseny Krasnov <arseny.krasnov@...persky.com>,
        "David S. Miller" <davem@...emloft.net>, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org,
        Stefano Garzarella <sgarzare@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>, Asias He <asias@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net v2 3/3] vsock/virtio: read the negotiated features before using VQs

Complete the driver configuration, reading the negotiated features,
before using the VQs and tell the device that the driver is ready in
the virtio_vsock_probe().

Fixes: 53efbba12cc7 ("virtio/vsock: enable SEQPACKET for transport")
Suggested-by: Michael S. Tsirkin <mst@...hat.com>
Signed-off-by: Stefano Garzarella <sgarzare@...hat.com>
---
 net/vmw_vsock/virtio_transport.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index fff67ad39087..1244e7cf585b 100644
--- a/net/vmw_vsock/virtio_transport.c
+++ b/net/vmw_vsock/virtio_transport.c
@@ -622,6 +622,9 @@ static int virtio_vsock_probe(struct virtio_device *vdev)
 	INIT_WORK(&vsock->event_work, virtio_transport_event_work);
 	INIT_WORK(&vsock->send_pkt_work, virtio_transport_send_pkt_work);
 
+	if (virtio_has_feature(vdev, VIRTIO_VSOCK_F_SEQPACKET))
+		vsock->seqpacket_allow = true;
+
 	vdev->priv = vsock;
 	virtio_device_ready(vdev);
 
@@ -639,9 +642,6 @@ static int virtio_vsock_probe(struct virtio_device *vdev)
 	vsock->event_run = true;
 	mutex_unlock(&vsock->event_lock);
 
-	if (virtio_has_feature(vdev, VIRTIO_VSOCK_F_SEQPACKET))
-		vsock->seqpacket_allow = true;
-
 	rcu_assign_pointer(the_virtio_vsock, vsock);
 
 	mutex_unlock(&the_virtio_vsock_mutex);
-- 
2.35.1