vhost: make destroy callback on reset owner message

QEMU sends VHOST_RESET_OWNER first when shutting down.
There was previously no way for the dataplane to know that the
virtio_net instance had become unusable and it would segfault
when trying to do RX/TX.

Signed-off-by: Rich Lane <rich.lane@bigswitch.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>

diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
index 14278de..39a6a5e 100644 (file)
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -436,6 +436,9 @@ reset_owner(struct vhost_device_ctx ctx)
        if (dev == NULL)
                return -1;
 
+       if (dev->flags & VIRTIO_DEV_RUNNING)
+               notify_ops->destroy_device(dev);
+
        device_fh = dev->device_fh;
        cleanup_device(dev);
        init_device(dev);