[dpdk-dev] [RFC 09/24] vhost: pass vhost_transport_ops through vhost_new_device()

[Stefan Hajnoczi <stefanha@redhat.com>]

This patch propagates struct vhost_user_socket's vhost_transport_ops
into the newly created vhost device.

This patch completes the initial refactoring of socket.c, with the
AF_UNIX-specific code now in trans_af_unix.c and the librte_vhost API
entrypoints in socket.c.

Now it is time to turn towards vhost_user.c and its mixture of
vhost-user protocol processing and socket I/O.  The socket I/O will be
moved into trans_af_unix.c so that other transports can be added that
don't use file descriptors.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 lib/librte_vhost/vhost.h         | 2 +-
 lib/librte_vhost/trans_af_unix.c | 2 +-
 lib/librte_vhost/vhost.c         | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 45167b6a7..ca7507284 100644
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -434,7 +434,7 @@ gpa_to_hpa(struct virtio_net *dev, uint64_t gpa, uint64_t size)
 
 struct virtio_net *get_device(int vid);
 
-int vhost_new_device(void);
+int vhost_new_device(const struct vhost_transport_ops *trans_ops);
 void cleanup_device(struct virtio_net *dev, int destroy);
 void reset_device(struct virtio_net *dev);
 void vhost_destroy_device(int);
diff --git a/lib/librte_vhost/trans_af_unix.c b/lib/librte_vhost/trans_af_unix.c
index 54c1b2db3..c85a162e8 100644
--- a/lib/librte_vhost/trans_af_unix.c
+++ b/lib/librte_vhost/trans_af_unix.c
@@ -176,7 +176,7 @@ vhost_user_add_connection(int fd, struct vhost_user_socket *vsocket)
 		return;
 	}
 
-	vid = vhost_new_device();
+	vid = vhost_new_device(vsocket->trans_ops);
 	if (vid == -1) {
 		goto err;
 	}
diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 630dbd014..f8754e261 100644
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -261,7 +261,7 @@ reset_device(struct virtio_net *dev)
  * there is a new virtio device being attached).
  */
 int
-vhost_new_device(void)
+vhost_new_device(const struct vhost_transport_ops *trans_ops)
 {
 	struct virtio_net *dev;
 	int i;
@@ -287,7 +287,7 @@ vhost_new_device(void)
 	vhost_devices[i] = dev;
 	dev->vid = i;
 	dev->slave_req_fd = -1;
-	dev->trans_ops = &af_unix_trans_ops;
+	dev->trans_ops = trans_ops;
 
 	return i;
 }
-- 
2.14.3