Merge branch 'Enhance-virtio-vsock-connection-semantics'

Sebastien Boeuf says:

====================
Enhance virtio-vsock connection semantics

This series improves the semantics behind the way virtio-vsock server
accepts connections coming from the client. Whenever the server
receives a connection request from the client, if it is bound to the
socket but not yet listening, it will answer with a RST packet. The
point is to ensure each request from the client is quickly processed
so that the client can decide about the strategy of retrying or not.

The series includes along with the improvement patch a new test to
ensure the behavior is consistent across all hypervisors drivers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>