vhost_net_init will use VhostNetOptions to get all its arguments

vhost_dev_init will replace devfd and devpath with a single opaque argument.
This is initialised with a file descriptor. When TAP is used (through
vhost_net), open /dev/vhost-net and pass the fd as an opaque parameter in
VhostNetOptions. The same applies to vhost-scsi - open /dev/vhost-scsi and
pass the fd.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/hw/scsi/vhost-scsi.c b/hw/scsi/vhost-scsi.c
index a12d888..e4c98b4 100644
--- a/hw/scsi/vhost-scsi.c
+++ b/hw/scsi/vhost-scsi.c
@@ -210,6 +210,13 @@ static void vhost_scsi_realize(DeviceState *dev, Error **errp)
             error_setg(errp, "vhost-scsi: unable to parse vhostfd");
             return;
         }
+    } else {
+        vhostfd = open("/dev/vhost-scsi", O_RDWR);
+        if (vhostfd < 0) {
+            error_setg(errp, "vhost-scsi: open vhost char device failed: %s",
+                       strerror(errno));
+            return;
+        }
     }
 
     virtio_scsi_common_realize(dev, &err);
@@ -222,7 +229,8 @@ static void vhost_scsi_realize(DeviceState *dev, Error **errp)
     s->dev.vqs = g_new(struct vhost_virtqueue, s->dev.nvqs);
     s->dev.vq_index = 0;
 
-    ret = vhost_dev_init(&s->dev, vhostfd, "/dev/vhost-scsi", true);
+    ret = vhost_dev_init(&s->dev, (void *)(uintptr_t)vhostfd,
+                         true);
     if (ret < 0) {
         error_setg(errp, "vhost-scsi: vhost initialization failed: %s",
                    strerror(-ret));