blob: a60c821be44c3e99e971f12a5a061cf28cfea519 [file] [log] [blame]
Thomas Graf18237302006-08-04 23:04:54 -07001#ifndef __LINUX_IF_ADDR_H
2#define __LINUX_IF_ADDR_H
3
Jaswinder Singh Rajput680ee0b2009-01-30 21:21:01 +05304#include <linux/types.h>
Thomas Graf18237302006-08-04 23:04:54 -07005#include <linux/netlink.h>
6
7struct ifaddrmsg
8{
9 __u8 ifa_family;
10 __u8 ifa_prefixlen; /* The prefix length */
11 __u8 ifa_flags; /* Flags */
12 __u8 ifa_scope; /* Address scope */
13 __u32 ifa_index; /* Link index */
14};
15
16/*
17 * Important comment:
18 * IFA_ADDRESS is prefix address, rather than local interface address.
19 * It makes no difference for normally configured broadcast interfaces,
20 * but for point-to-point IFA_ADDRESS is DESTINATION address,
21 * local address is supplied in IFA_LOCAL attribute.
22 */
23enum
24{
25 IFA_UNSPEC,
26 IFA_ADDRESS,
27 IFA_LOCAL,
28 IFA_LABEL,
29 IFA_BROADCAST,
30 IFA_ANYCAST,
31 IFA_CACHEINFO,
32 IFA_MULTICAST,
33 __IFA_MAX,
34};
35
36#define IFA_MAX (__IFA_MAX - 1)
37
38/* ifa_flags */
39#define IFA_F_SECONDARY 0x01
40#define IFA_F_TEMPORARY IFA_F_SECONDARY
41
Noriaki TAKAMIYA55ebaef2006-09-22 14:45:27 -070042#define IFA_F_NODAD 0x02
Neil Horman95c385b2007-04-25 17:08:10 -070043#define IFA_F_OPTIMISTIC 0x04
Noriaki TAKAMIYA3b9f9a12006-09-22 14:45:56 -070044#define IFA_F_HOMEADDRESS 0x10
Thomas Graf18237302006-08-04 23:04:54 -070045#define IFA_F_DEPRECATED 0x20
46#define IFA_F_TENTATIVE 0x40
47#define IFA_F_PERMANENT 0x80
48
49struct ifa_cacheinfo
50{
51 __u32 ifa_prefered;
52 __u32 ifa_valid;
53 __u32 cstamp; /* created timestamp, hundredths of seconds */
54 __u32 tstamp; /* updated timestamp, hundredths of seconds */
55};
56
David S. Millerd3dcc072006-12-08 17:05:13 -080057/* backwards compatibility for userspace */
58#ifndef __KERNEL__
59#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
60#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
61#endif
62
Thomas Graf18237302006-08-04 23:04:54 -070063#endif