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linux-next/fs/afs/netdevices.c
Arnd Bergmann b4db2b35fc afs: Use core kernel UUID generation
AFS uses a time based UUID to identify the host itself.  This requires
getting a timestamp which is currently done through the getnstimeofday()
interface that we want to eventually get rid of.

Instead of replacing it with a ktime-based interface, simply remove the
entire function and use generate_random_uuid() instead, which has a v4
("completely random") UUID instead of the time-based one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
2017-02-10 16:34:17 +00:00

48 lines
1.0 KiB
C

/* 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_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;
}