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Commit | Line | Data |
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dc1f6bff PM |
1 | /* AFS network device helpers |
2 | * | |
3 | * Copyright (c) 2007 Patrick McHardy <kaber@trash.net> | |
4 | */ | |
5 | ||
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 "internal.h" | |
12 | ||
13 | int afs_get_MAC_address(u8 mac[ETH_ALEN]) | |
14 | { | |
15 | struct net_device *dev; | |
16 | int ret = -ENODEV; | |
17 | ||
18 | rtnl_lock(); | |
19 | dev = __dev_getfirstbyhwtype(ARPHRD_ETHER); | |
20 | if (dev) { | |
21 | memcpy(mac, dev->dev_addr, ETH_ALEN); | |
22 | ret = 0; | |
23 | } | |
24 | rtnl_unlock(); | |
25 | return ret; | |
26 | } | |
27 | ||
28 | int afs_get_ipv4_interfaces(struct afs_interface *bufs, size_t maxbufs, | |
29 | bool wantloopback) | |
30 | { | |
31 | struct net_device *dev; | |
32 | struct in_device *idev; | |
33 | int n = 0; | |
34 | ||
35 | rtnl_lock(); | |
36 | for (dev = dev_base; dev; dev = dev->next) { | |
37 | if (dev->type == ARPHRD_LOOPBACK && !wantloopback) | |
38 | continue; | |
39 | idev = __in_dev_get_rtnl(dev); | |
40 | if (!idev) | |
41 | continue; | |
42 | for_primary_ifa(idev) { | |
43 | if (n == maxbufs) | |
44 | goto out; | |
45 | bufs[n].address.s_addr = ifa->ifa_address; | |
46 | bufs[n].netmask.s_addr = ifa->ifa_mask; | |
47 | bufs[n].mtu = dev->mtu; | |
48 | n++; | |
49 | } endfor_ifa(idev) | |
50 | } | |
51 | out: | |
52 | rtnl_unlock(); | |
53 | return n; | |
54 | } |