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718e3744 1/* Router advertisement
7cee1bb1 2 * Copyright (C) 2005 6WIND <jean-mickael.guerin@6wind.com>
718e3744 3 * Copyright (C) 1999 Kunihiro Ishiguro
4 *
5 * This file is part of GNU Zebra.
6 *
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
10 * later version.
11 *
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
896014f4
DL
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
718e3744 20 */
21
22#ifndef _ZEBRA_RTADV_H
23#define _ZEBRA_RTADV_H
24
30a2231a 25#include "vty.h"
66c454f2
PJ
26#include "zebra/interface.h"
27
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28#ifdef __cplusplus
29extern "C" {
30#endif
31
36735ed9 32/* NB: RTADV is defined in zebra/interface.h above */
d62a17ae 33#if defined(HAVE_RTADV)
36735ed9 34
718e3744 35/* Router advertisement prefix. */
d62a17ae 36struct rtadv_prefix {
37 /* Prefix to be advertised. */
38 struct prefix_ipv6 prefix;
39
2a855763
DS
40 /* The prefix was manually/automatically defined. */
41 int AdvPrefixCreate;
42
d62a17ae 43 /* The value to be placed in the Valid Lifetime in the Prefix */
d7c0a89a 44 uint32_t AdvValidLifetime;
718e3744 45#define RTADV_VALID_LIFETIME 2592000
46
d62a17ae 47 /* The value to be placed in the on-link flag */
48 int AdvOnLinkFlag;
718e3744 49
d62a17ae 50 /* The value to be placed in the Preferred Lifetime in the Prefix
51 Information option, in seconds.*/
d7c0a89a 52 uint32_t AdvPreferredLifetime;
718e3744 53#define RTADV_PREFERRED_LIFETIME 604800
54
d62a17ae 55 /* The value to be placed in the Autonomous Flag. */
56 int AdvAutonomousFlag;
7cee1bb1 57
d62a17ae 58 /* The value to be placed in the Router Address Flag [RFC6275 7.2]. */
59 int AdvRouterAddressFlag;
7cee1bb1 60#ifndef ND_OPT_PI_FLAG_RADDR
61#define ND_OPT_PI_FLAG_RADDR 0x20
62#endif
718e3744 63};
64
adee8f21
DS
65/* RFC4861 minimum delay between RAs */
66#ifndef MIN_DELAY_BETWEEN_RAS
67#define MIN_DELAY_BETWEEN_RAS 3000
68#endif
69
6eb0c5ab 70/* RFC4584 Extension to Sockets API for Mobile IPv6 */
7cee1bb1 71
72#ifndef ND_OPT_ADV_INTERVAL
73#define ND_OPT_ADV_INTERVAL 7 /* Adv Interval Option */
74#endif
75#ifndef ND_OPT_HA_INFORMATION
76#define ND_OPT_HA_INFORMATION 8 /* HA Information Option */
77#endif
78
6f0e3f6e 79#ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL
d62a17ae 80struct nd_opt_adv_interval { /* Advertisement interval option */
81 uint8_t nd_opt_ai_type;
82 uint8_t nd_opt_ai_len;
83 uint16_t nd_opt_ai_reserved;
84 uint32_t nd_opt_ai_interval;
7cee1bb1 85} __attribute__((__packed__));
86#else
6f0e3f6e 87#ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL_ND_OPT_AI_TYPE
7cee1bb1 88/* fields may have to be renamed */
89#define nd_opt_ai_type nd_opt_adv_interval_type
90#define nd_opt_ai_len nd_opt_adv_interval_len
91#define nd_opt_ai_reserved nd_opt_adv_interval_reserved
92#define nd_opt_ai_interval nd_opt_adv_interval_ival
93#endif
94#endif
95
6f0e3f6e 96#ifndef HAVE_STRUCT_ND_OPT_HOMEAGENT_INFO
d62a17ae 97struct nd_opt_homeagent_info { /* Home Agent info */
d7c0a89a
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98 uint8_t nd_opt_hai_type;
99 uint8_t nd_opt_hai_len;
100 uint16_t nd_opt_hai_reserved;
101 uint16_t nd_opt_hai_preference;
102 uint16_t nd_opt_hai_lifetime;
7cee1bb1 103} __attribute__((__packed__));
104#endif
105
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LS
106#ifndef ND_OPT_RDNSS
107#define ND_OPT_RDNSS 25
108#endif
109#ifndef ND_OPT_DNSSL
110#define ND_OPT_DNSSL 31
111#endif
112
113#ifndef HAVE_STRUCT_ND_OPT_RDNSS
114struct nd_opt_rdnss { /* Recursive DNS server option [RFC8106 5.1] */
115 uint8_t nd_opt_rdnss_type;
116 uint8_t nd_opt_rdnss_len;
117 uint16_t nd_opt_rdnss_reserved;
118 uint32_t nd_opt_rdnss_lifetime;
119 /* Followed by one or more IPv6 addresses */
120} __attribute__((__packed__));
121#endif
122
123#ifndef HAVE_STRUCT_ND_OPT_DNSSL
124struct nd_opt_dnssl { /* DNS search list option [RFC8106 5.2] */
125 uint8_t nd_opt_dnssl_type;
126 uint8_t nd_opt_dnssl_len;
127 uint16_t nd_opt_dnssl_reserved;
128 uint32_t nd_opt_dnssl_lifetime;
129 /*
130 * Followed by one or more domain names encoded as in [RFC1035 3.1].
131 * Multiple domain names are concatenated after encoding. In any case,
132 * the result is zero-padded to a multiple of 8 octets.
133 */
134} __attribute__((__packed__));
135#endif
136
8da4e946 137#endif /* HAVE_RTADV */
36735ed9 138
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DS
139/*
140 * ipv6 nd prefixes can be manually defined, derived from the kernel interface
141 * configs or both. If both, manual flag/timer settings are used.
142 */
143enum ipv6_nd_prefix_source {
144 PREFIX_SRC_NONE = 0,
145 PREFIX_SRC_MANUAL,
146 PREFIX_SRC_AUTO,
147 PREFIX_SRC_BOTH,
148};
149
b6120505 150typedef enum {
d62a17ae 151 RA_ENABLE = 0,
152 RA_SUPPRESS,
b6120505
DW
153} ipv6_nd_suppress_ra_status;
154
df9c8c57 155extern void rtadv_init(struct zebra_vrf *zvrf);
aab5893a
DS
156extern void rtadv_vrf_terminate(struct zebra_vrf *zvrf);
157extern void rtadv_terminate(void);
d7fc0e67
DS
158extern void rtadv_stop_ra(struct interface *ifp);
159extern void rtadv_stop_ra_all(void);
d62a17ae 160extern void rtadv_cmd_init(void);
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161extern void zebra_interface_radv_disable(ZAPI_HANDLER_ARGS);
162extern void zebra_interface_radv_enable(ZAPI_HANDLER_ARGS);
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DS
163extern void rtadv_add_prefix(struct zebra_if *zif, const struct prefix_ipv6 *p);
164extern void rtadv_delete_prefix(struct zebra_if *zif, const struct prefix *p);
cd80d74f 165
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166#ifdef __cplusplus
167}
168#endif
1002497a 169
718e3744 170#endif /* _ZEBRA_RTADV_H */