From: Xueming Li <xuemingl@nvidia.com>
Date: Thu, 27 Jan 2022 08:45:35 +0000 (+0800)
Subject: vhost: add vDPA resource cleanup callback
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=67cdaea00cd6ec72dc05386b80525157a9cf2018;p=dpdk.git

vhost: add vDPA resource cleanup callback

This patch adds vDPA device cleanup callback to release resources on
vhost user connection close.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/vhost/vdpa_driver.h b/lib/vhost/vdpa_driver.h
index fc2d6acedd..fddbd50652 100644
--- a/lib/vhost/vdpa_driver.h
+++ b/lib/vhost/vdpa_driver.h
@@ -34,6 +34,9 @@ struct rte_vdpa_dev_ops {
 	/** Driver close the device (Mandatory) */
 	int (*dev_close)(int vid);
 
+	/** Connection closed, clean up resources */
+	int (*dev_cleanup)(int vid);
+
 	/** Enable/disable this vring (Mandatory) */
 	int (*set_vring_state)(int vid, int vring, int state);
 
diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
index 2e2417b0b9..7a6fd87dd9 100644
--- a/lib/vhost/vhost_user.c
+++ b/lib/vhost/vhost_user.c
@@ -219,6 +219,12 @@ free_mem_region(struct virtio_net *dev)
 void
 vhost_backend_cleanup(struct virtio_net *dev)
 {
+	struct rte_vdpa_device *vdpa_dev;
+
+	vdpa_dev = dev->vdpa_dev;
+	if (vdpa_dev && vdpa_dev->ops->dev_cleanup != NULL)
+		vdpa_dev->ops->dev_cleanup(dev->vid);
+
 	if (dev->mem) {
 		free_mem_region(dev);
 		rte_free(dev->mem);