1 /* AFS network device helpers
3 * Copyright (c) 2007 Patrick McHardy <kaber@trash.net>
6 #include <linux/string.h>
7 #include <linux/rtnetlink.h>
8 #include <linux/inetdevice.h>
9 #include <linux/netdevice.h>
10 #include <linux/if_arp.h>
11 #include <net/net_namespace.h>
15 * get a MAC address from a random ethernet interface that has a real one
16 * - the buffer will normally be 6 bytes in size
18 int afs_get_MAC_address(u8 *mac, size_t maclen)
20 struct net_device *dev;
23 BUG_ON(maclen != ETH_ALEN);
26 dev = __dev_getfirstbyhwtype(&init_net, ARPHRD_ETHER);
28 memcpy(mac, dev->dev_addr, maclen);
36 * get a list of this system's interface IPv4 addresses, netmasks and MTUs
37 * - maxbufs must be at least 1
38 * - returns the number of interface records in the buffer
40 int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs,
43 struct net_device *dev;
44 struct in_device *idev;
50 for_each_netdev(&init_net, dev) {
51 if (dev->type == ARPHRD_LOOPBACK && !wantloopback)
53 idev = __in_dev_get_rtnl(dev);
56 for_primary_ifa(idev) {
57 bufs[n].address.s_addr = ifa->ifa_address;
58 bufs[n].netmask.s_addr = ifa->ifa_mask;
59 bufs[n].mtu = dev->mtu;