Function rte_vhost_driver_get_features

dpdk/lib/vhost/socket.c:724–757

}

int
rte_vhost_driver_get_features(const char *path, uint64_t *features)
{
	struct vhost_user_socket *vsocket;
	uint64_t vdpa_features;
	struct rte_vdpa_device *vdpa_dev;
	int ret = 0;

	pthread_mutex_lock(&vhost_user.mutex);
	vsocket = find_vhost_user_socket(path);
	if (!vsocket) {
		VHOST_LOG_CONFIG(path, ERR, "socket file is not registered yet.\n");
		ret = -1;
		goto unlock_exit;
	}

	vdpa_dev = vsocket->vdpa_dev;
	if (!vdpa_dev) {
		*features = vsocket->features;
		goto unlock_exit;
	}

	if (vdpa_dev->ops->get_features(vdpa_dev, &vdpa_features) < 0) {
		VHOST_LOG_CONFIG(path, ERR, "failed to get vdpa features for socket file.\n");
		ret = -1;
		goto unlock_exit;
	}

	*features = vsocket->features & vdpa_features;

unlock_exit:
	pthread_mutex_unlock(&vhost_user.mutex);
	return ret;
}

int
rte_vhost_driver_set_protocol_features(const char *path,