mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
7562f876cd
Cleanup of dev_base list use, with the aim to simplify making device list per-namespace. In almost every occasion, use of dev_base variable and dev->next pointer could be easily replaced by for_each_netdev loop. A few most complicated places were converted to using first_netdev()/next_netdev(). Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Kirill Korotaev <dev@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
68 lines
1.4 KiB
C
68 lines
1.4 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 "internal.h"
|
|
|
|
/*
|
|
* get a MAC address from a random ethernet interface that has a real one
|
|
* - the buffer will normally be 6 bytes in size
|
|
*/
|
|
int afs_get_MAC_address(u8 *mac, size_t maclen)
|
|
{
|
|
struct net_device *dev;
|
|
int ret = -ENODEV;
|
|
|
|
if (maclen != ETH_ALEN)
|
|
BUG();
|
|
|
|
rtnl_lock();
|
|
dev = __dev_getfirstbyhwtype(ARPHRD_ETHER);
|
|
if (dev) {
|
|
memcpy(mac, dev->dev_addr, maclen);
|
|
ret = 0;
|
|
}
|
|
rtnl_unlock();
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* 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(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;
|
|
}
|