1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2022 Alexander V. Chernikov <melifaro@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28/*
29 * Interface address-related (RTM_<NEW|DEL|GET>ADDR) message header and attributes.
30 */
31
32#ifndef _NETLINK_ROUTE_IFADDRS_H_
33#define _NETLINK_ROUTE_IFADDRS_H_
34
35/* Base header for all of the relevant messages */
36struct ifaddrmsg {
37 uint8_t ifa_family; /* Address family */
38 uint8_t ifa_prefixlen; /* Prefix length */
39 uint8_t ifa_flags; /* Address-specific flags */
40 uint8_t ifa_scope; /* Address scope */
41 uint32_t ifa_index; /* Link ifindex */
42};
43
44#ifndef _KERNEL
45#define _NL_IFA_HDRLEN ((int)sizeof(struct ifaddrmsg))
46#define IFA_RTA(_ifa) ((struct rtattr *)(NL_ITEM_DATA(_ifa, _NL_IFA_HDRLEN)))
47#define IFA_PAYLOAD(_hdr) NLMSG_PAYLOAD(_hdr, _NL_IFA_HDRLEN)
48#endif
49
50/* Defined attributes */
51enum {
52 IFA_UNSPEC,
53 IFA_ADDRESS = 1, /* binary, prefix address (destination for p2p) */
54 IFA_LOCAL = 2, /* binary, interface address */
55 IFA_LABEL = 3, /* string, interface name */
56 IFA_BROADCAST = 4, /* binary, broadcast ifa */
57 IFA_ANYCAST = 5, /* not supported */
58 IFA_CACHEINFO = 6, /* binary, struct ifa_cacheinfo */
59 IFA_MULTICAST = 7, /* not supported */
60 IFA_FLAGS = 8, /* u32, IFA_F flags */
61 IFA_RT_PRIORITY = 9, /* not supported */
62 IFA_TARGET_NETNSID = 10, /* not supported */
63 IFA_FREEBSD = 11, /* nested, FreeBSD-specific */
64 __IFA_MAX,
65};
66#define IFA_MAX (__IFA_MAX - 1)
67
68enum {
69 IFAF_UNSPEC,
70 IFAF_VHID = 1, /* u32: carp vhid */
71 IFAF_FLAGS = 2, /* u32: FreeBSD-specific ifa flags */
72 __IFAF_MAX,
73};
74#define IFAF_MAX (__IFAF_MAX - 1)
75
76/* IFA_FLAGS attribute flags */
77#define IFA_F_SECONDARY 0x0001
78#define IFA_F_TEMPORARY IFA_F_SECONDARY
79#define IFA_F_NODAD 0x0002
80#define IFA_F_OPTIMISTIC 0x0004
81#define IFA_F_DADFAILED 0x0008
82#define IFA_F_HOMEADDRESS 0x0010
83#define IFA_F_DEPRECATED 0x0020
84#define IFA_F_TENTATIVE 0x0040
85#define IFA_F_PERMANENT 0x0080
86#define IFA_F_MANAGETEMPADDR 0x0100
87#define IFA_F_NOPREFIXROUTE 0x0200
88#define IFA_F_MCAUTOJOIN 0x0400
89#define IFA_F_STABLE_PRIVACY 0x0800
90
91/* IFA_CACHEINFO value */
92struct ifa_cacheinfo {
93 uint32_t ifa_prefered; /* seconds till the end of the prefix considered preferred */
94 uint32_t ifa_valid; /* seconds till the end of the prefix considered valid */
95 uint32_t cstamp; /* creation time in 1ms intervals from the boot time */
96 uint32_t tstamp; /* update time in 1ms intervals from the boot time */
97};
98
99#endif