C++ (Cpp) alloc_ring Examples

Example #1

File: ring.c Project: chamaken/nurs

static struct mnl_ring *
mnl_socket_mmap(struct mnl_socket *nls, struct nl_mmap_req *req,
		int flags, int optname)
{
	struct mnl_ring *nlr = alloc_ring(req);

	if (nlr == NULL)
		return NULL;

	if (mnl_socket_setsockopt(nls, optname, req, sizeof(*req)) == -1)
		goto fail;

	nlr->ring = mmap(NULL, ring_size(nlr), PROT_READ | PROT_WRITE, flags,
			 mnl_socket_get_fd(nls), 0);
	if (nlr->ring == MAP_FAILED)
		goto fail;

        nlr->fd = mnl_socket_get_fd(nls);

	return nlr;

fail:
	free(nlr);
	return NULL;
}

Example #2

File: winbond-840.c Project: dmgerman/original

static int netdev_open(struct net_device *dev)
{
	struct netdev_private *np = (struct netdev_private *)dev->priv;
	long ioaddr = dev->base_addr;
	int i;

	writel(0x00000001, ioaddr + PCIBusCfg);		/* Reset */

	i = request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev);
	if (i)
		return i;

	if (debug > 1)
		printk(KERN_DEBUG "%s: w89c840_open() irq %d.\n",
			   dev->name, dev->irq);

	if((i=alloc_ring(dev)))
		return i;

	init_registers(dev);

	netif_start_queue(dev);
	if (debug > 2)
		printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name);

	/* Set the timer to check for link beat. */
	init_timer(&np->timer);
	np->timer.expires = jiffies + 3*HZ;
	np->timer.data = (unsigned long)dev;
	np->timer.function = &netdev_timer;				/* timer handler */
	add_timer(&np->timer);

	return 0;
}