static int vector_net_close()

in drivers/vector_kern.c [1144:1194]

• 47 lines of code
• 10 McCabe index (conditional complexity)

static int vector_net_close(struct net_device *dev)
{
	struct vector_private *vp = netdev_priv(dev);
	unsigned long flags;

	netif_stop_queue(dev);
	del_timer(&vp->tl);

	if (vp->fds == NULL)
		return 0;

	/* Disable and free all IRQS */
	if (vp->rx_irq > 0) {
		um_free_irq(vp->rx_irq, dev);
		vp->rx_irq = 0;
	}
	if (vp->tx_irq > 0) {
		um_free_irq(vp->tx_irq, dev);
		vp->tx_irq = 0;
	}
	tasklet_kill(&vp->tx_poll);
	if (vp->fds->rx_fd > 0) {
		if (vp->bpf)
			uml_vector_detach_bpf(vp->fds->rx_fd, vp->bpf);
		os_close_file(vp->fds->rx_fd);
		vp->fds->rx_fd = -1;
	}
	if (vp->fds->tx_fd > 0) {
		os_close_file(vp->fds->tx_fd);
		vp->fds->tx_fd = -1;
	}
	if (vp->bpf != NULL)
		kfree(vp->bpf->filter);
	kfree(vp->bpf);
	vp->bpf = NULL;
	kfree(vp->fds->remote_addr);
	kfree(vp->transport_data);
	kfree(vp->header_rxbuffer);
	kfree(vp->header_txbuffer);
	if (vp->rx_queue != NULL)
		destroy_queue(vp->rx_queue);
	if (vp->tx_queue != NULL)
		destroy_queue(vp->tx_queue);
	kfree(vp->fds);
	vp->fds = NULL;
	spin_lock_irqsave(&vp->lock, flags);
	vp->opened = false;
	vp->in_error = false;
	spin_unlock_irqrestore(&vp->lock, flags);
	return 0;
}