[RFC PATCH v7 20/22] virtio/vsock: SEQPACKET feature bit support

Arseny Krasnov
2021-03-23T13:17:20Z

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(+)

diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 83ae2078c847..ee99bd919a12 100644
--- a/net/vmw_vsock/virtio_transport.c
+++ b/net/vmw_vsock/virtio_transport.c
@@ -624,6 +624,10 @@ 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:
@@ -707,6 +711,7 @@ 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