vhost: keep device identifier after reset owner

virtio-net clean and init device after a VHOST_USER_RESET_OWNER.
This reset device identifier to 0 and break ll_root listing logic.
This patch keep the old device identifier and re-write it on the cleaned
device.

Signed-off-by: Jerome Jutteau <jerome.jutteau@outscale.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 d0f1764ed9f4ff6ec347a3ca1504016f2927f5fd..955a29d79ba215f7aebaf8645a5e9671948e31ab 100644 (file)
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -399,11 +399,14 @@ static int
 reset_owner(struct vhost_device_ctx ctx)
 {
        struct virtio_net_config_ll *ll_dev;
+       uint64_t device_fh;
 
        ll_dev = get_config_ll_entry(ctx);
+       device_fh = ll_dev->dev.device_fh;
 
        cleanup_device(&ll_dev->dev);
        init_device(&ll_dev->dev);
+       ll_dev->dev.device_fh = device_fh;
 
        return 0;
 }