1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// SPDX-License-Identifier: GPL-2.0
/* AFS network device helpers
*
* Copyright (c) 2007 Patrick McHardy <kaber@trash.net>
*/
#include <linux/string.h>
#include <linux/rtnetlink.h>
#include <linux/inetdevice.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <net/net_namespace.h>
#include "internal.h"
/*
* get a list of this system's interface IPv4 addresses, netmasks and MTUs
* - maxbufs must be at least 1
* - returns the number of interface records in the buffer
*/
int afs_get_ipv4_interfaces(struct afs_net *net, 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(net->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;
}
|
