Function vhost_user_set_config

dpdk/lib/vhost/vhost_user.c:2589–2629

}

static int
vhost_user_set_config(struct virtio_net **pdev,
			struct vhu_msg_context *ctx,
			int main_fd __rte_unused)
{
	struct virtio_net *dev = *pdev;
	struct rte_vdpa_device *vdpa_dev = dev->vdpa_dev;
	int ret = 0;

	if (validate_msg_fds(dev, ctx, 0) != 0)
		return RTE_VHOST_MSG_RESULT_ERR;

	if (ctx->msg.payload.cfg.size > VHOST_USER_MAX_CONFIG_SIZE) {
		VHOST_LOG_CONFIG(dev->ifname, ERR,
			"vhost_user_config size: %"PRIu32", should not be larger than %d\n",
			ctx->msg.payload.cfg.size, VHOST_USER_MAX_CONFIG_SIZE);
		goto out;
	}

	if (!vdpa_dev) {
		VHOST_LOG_CONFIG(dev->ifname, ERR, "is not vDPA device!\n");
		goto out;
	}

	if (vdpa_dev->ops->set_config) {
		ret = vdpa_dev->ops->set_config(dev->vid,
			ctx->msg.payload.cfg.region,
			ctx->msg.payload.cfg.offset,
			ctx->msg.payload.cfg.size,
			ctx->msg.payload.cfg.flags);
		if (ret)
			VHOST_LOG_CONFIG(dev->ifname, ERR, "set_config() return error!\n");
	} else {
		VHOST_LOG_CONFIG(dev->ifname, ERR, "set_config() not supported!\n");
	}

	return RTE_VHOST_MSG_RESULT_OK;

out:
	return RTE_VHOST_MSG_RESULT_ERR;
}

static int
vhost_user_iotlb_msg(struct virtio_net **pdev,