tree 899cad4c8057bb02218757c7f87a76ee41696c39
parent 45ddce214a797de65c0418bebf90c1b564c3ee3d
author Stefano Stabellini <sstabellini@kernel.org> 1509403260 -0700
committer Boris Ostrovsky <boris.ostrovsky@oracle.com> 1509455153 -0400

xen/pvcalls: implement recvmsg

Implement recvmsg by copying data from the "in" ring. If not enough data
is available and the recvmsg call is blocking, then wait on the
inflight_conn_req waitqueue. Take the active socket in_mutex so that
only one function can access the ring at any given time.

Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>