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Greg Kroah-Hartman6f52b162017-11-01 15:08:43 +01001/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
Thomas Graf18237302006-08-04 23:04:54 -07002#ifndef __LINUX_IF_ADDR_H
3#define __LINUX_IF_ADDR_H
4
Jaswinder Singh Rajput680ee0b2009-01-30 21:21:01 +05305#include <linux/types.h>
Thomas Graf18237302006-08-04 23:04:54 -07006#include <linux/netlink.h>
7
Eric Dumazetd94d9fe2009-11-04 09:50:58 -08008struct ifaddrmsg {
Thomas Graf18237302006-08-04 23:04:54 -07009 __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.
Jiri Pirko479840f2013-12-06 09:45:21 +010022 *
23 * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.
24 * If present, the value from struct ifaddrmsg will be ignored.
Thomas Graf18237302006-08-04 23:04:54 -070025 */
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080026enum {
Thomas Graf18237302006-08-04 23:04:54 -070027 IFA_UNSPEC,
28 IFA_ADDRESS,
29 IFA_LOCAL,
30 IFA_LABEL,
31 IFA_BROADCAST,
32 IFA_ANYCAST,
33 IFA_CACHEINFO,
34 IFA_MULTICAST,
Jiri Pirko479840f2013-12-06 09:45:21 +010035 IFA_FLAGS,
David Ahern620dee92018-05-27 08:09:56 -070036 IFA_RT_PRIORITY, /* u32, priority/metric for prefix route */
Christian Brauner9f3c0572018-09-04 21:53:48 +020037 IFA_TARGET_NETNSID,
Thomas Graf18237302006-08-04 23:04:54 -070038 __IFA_MAX,
39};
40
41#define IFA_MAX (__IFA_MAX - 1)
42
43/* ifa_flags */
44#define IFA_F_SECONDARY 0x01
45#define IFA_F_TEMPORARY IFA_F_SECONDARY
46
Noriaki TAKAMIYA55ebaef2006-09-22 14:45:27 -070047#define IFA_F_NODAD 0x02
Neil Horman95c385b2007-04-25 17:08:10 -070048#define IFA_F_OPTIMISTIC 0x04
Brian Haleycc411d02009-09-09 14:41:32 +000049#define IFA_F_DADFAILED 0x08
Noriaki TAKAMIYA3b9f9a12006-09-22 14:45:56 -070050#define IFA_F_HOMEADDRESS 0x10
Thomas Graf18237302006-08-04 23:04:54 -070051#define IFA_F_DEPRECATED 0x20
52#define IFA_F_TENTATIVE 0x40
53#define IFA_F_PERMANENT 0x80
Jiri Pirko53bd6742013-12-06 09:45:22 +010054#define IFA_F_MANAGETEMPADDR 0x100
Thomas Haller761aac72014-01-15 15:36:58 +010055#define IFA_F_NOPREFIXROUTE 0x200
Madhu Challa93a714d2015-02-25 09:58:35 -080056#define IFA_F_MCAUTOJOIN 0x400
Hannes Frederic Sowa64236f32015-03-23 23:36:02 +010057#define IFA_F_STABLE_PRIVACY 0x800
Thomas Graf18237302006-08-04 23:04:54 -070058
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080059struct ifa_cacheinfo {
Thomas Graf18237302006-08-04 23:04:54 -070060 __u32 ifa_prefered;
61 __u32 ifa_valid;
62 __u32 cstamp; /* created timestamp, hundredths of seconds */
63 __u32 tstamp; /* updated timestamp, hundredths of seconds */
64};
65
David S. Millerd3dcc072006-12-08 17:05:13 -080066/* backwards compatibility for userspace */
67#ifndef __KERNEL__
68#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
69#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
70#endif
71
Thomas Graf18237302006-08-04 23:04:54 -070072#endif