/* get a list of this system's interface IPv4 addresses, netmasks and MTUs */
int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs, bool wantloopback)
/* get a list of this system's interface IPv4 addresses, netmasks and MTUs */
int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs, bool wantloopback)
{
	struct net_device *dev;
	struct in_device *idev;
	int n = 0;
	ASSERT(maxbufs > 0);
	rtnl_lock();
	for_each_netdev(&init_net, dev) {
		if (dev->type == ARPHRD_LOOPBACK && !wantloopback)
			continue;
		idev = __in_dev_get_rtnl(dev);
		if (!idev)
			continue;
		for_primary_ifa(idev) {
			bufs[n].address.s_addr = ifa->ifa_address;
			bufs[n].netmask.s_addr = ifa->ifa_mask;
			bufs[n].mtu = dev->mtu;
			n++;
			if (n >= maxbufs)
				goto out;
		} endfor_ifa(idev);
	}
out:
	rtnl_unlock();
	return n;
}