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

[Arseny Krasnov]

This adds handling of SEQPACKET bit: guest tries to negotiate it
with vhost.

Signed-off-by: Arseny Krasnov <arseny.kras...@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