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/* Router advertisement
* Copyright (C) 2005 6WIND <jean-mickael.guerin@6wind.com>
* Copyright (C) 1999 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_RTADV_H
#define _ZEBRA_RTADV_H
#include "vty.h"
#include "zebra/interface.h"
#ifdef __cplusplus
extern "C" {
#endif
/* NB: RTADV is defined in zebra/interface.h above */
#if defined(HAVE_RTADV)
/* Router advertisement prefix. */
struct rtadv_prefix {
/* Prefix to be advertised. */
struct prefix_ipv6 prefix;
/* The prefix was manually/automatically defined. */
int AdvPrefixCreate;
/* The value to be placed in the Valid Lifetime in the Prefix */
uint32_t AdvValidLifetime;
#define RTADV_VALID_LIFETIME 2592000
/* The value to be placed in the on-link flag */
int AdvOnLinkFlag;
/* The value to be placed in the Preferred Lifetime in the Prefix
Information option, in seconds.*/
uint32_t AdvPreferredLifetime;
#define RTADV_PREFERRED_LIFETIME 604800
/* The value to be placed in the Autonomous Flag. */
int AdvAutonomousFlag;
/* The value to be placed in the Router Address Flag [RFC6275 7.2]. */
int AdvRouterAddressFlag;
#ifndef ND_OPT_PI_FLAG_RADDR
#define ND_OPT_PI_FLAG_RADDR 0x20
#endif
};
/* RFC4861 minimum delay between RAs */
#ifndef MIN_DELAY_BETWEEN_RAS
#define MIN_DELAY_BETWEEN_RAS 3000
#endif
/* RFC4584 Extension to Sockets API for Mobile IPv6 */
#ifndef ND_OPT_ADV_INTERVAL
#define ND_OPT_ADV_INTERVAL 7 /* Adv Interval Option */
#endif
#ifndef ND_OPT_HA_INFORMATION
#define ND_OPT_HA_INFORMATION 8 /* HA Information Option */
#endif
#ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL
struct nd_opt_adv_interval { /* Advertisement interval option */
uint8_t nd_opt_ai_type;
uint8_t nd_opt_ai_len;
uint16_t nd_opt_ai_reserved;
uint32_t nd_opt_ai_interval;
} __attribute__((__packed__));
#else
#ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL_ND_OPT_AI_TYPE
/* fields may have to be renamed */
#define nd_opt_ai_type nd_opt_adv_interval_type
#define nd_opt_ai_len nd_opt_adv_interval_len
#define nd_opt_ai_reserved nd_opt_adv_interval_reserved
#define nd_opt_ai_interval nd_opt_adv_interval_ival
#endif
#endif
#ifndef HAVE_STRUCT_ND_OPT_HOMEAGENT_INFO
struct nd_opt_homeagent_info { /* Home Agent info */
uint8_t nd_opt_hai_type;
uint8_t nd_opt_hai_len;
uint16_t nd_opt_hai_reserved;
uint16_t nd_opt_hai_preference;
uint16_t nd_opt_hai_lifetime;
} __attribute__((__packed__));
#endif
#ifndef ND_OPT_RDNSS
#define ND_OPT_RDNSS 25
#endif
#ifndef ND_OPT_DNSSL
#define ND_OPT_DNSSL 31
#endif
#ifndef HAVE_STRUCT_ND_OPT_RDNSS
struct nd_opt_rdnss { /* Recursive DNS server option [RFC8106 5.1] */
uint8_t nd_opt_rdnss_type;
uint8_t nd_opt_rdnss_len;
uint16_t nd_opt_rdnss_reserved;
uint32_t nd_opt_rdnss_lifetime;
/* Followed by one or more IPv6 addresses */
} __attribute__((__packed__));
#endif
#ifndef HAVE_STRUCT_ND_OPT_DNSSL
struct nd_opt_dnssl { /* DNS search list option [RFC8106 5.2] */
uint8_t nd_opt_dnssl_type;
uint8_t nd_opt_dnssl_len;
uint16_t nd_opt_dnssl_reserved;
uint32_t nd_opt_dnssl_lifetime;
/*
* Followed by one or more domain names encoded as in [RFC1035 3.1].
* Multiple domain names are concatenated after encoding. In any case,
* the result is zero-padded to a multiple of 8 octets.
*/
} __attribute__((__packed__));
#endif
#endif /* HAVE_RTADV */
/*
* ipv6 nd prefixes can be manually defined, derived from the kernel interface
* configs or both. If both, manual flag/timer settings are used.
*/
enum ipv6_nd_prefix_source {
PREFIX_SRC_NONE = 0,
PREFIX_SRC_MANUAL,
PREFIX_SRC_AUTO,
PREFIX_SRC_BOTH,
};
enum ipv6_nd_suppress_ra_status {
RA_ENABLE = 0,
RA_SUPPRESS,
};
extern void rtadv_init(struct zebra_vrf *zvrf);
extern void rtadv_vrf_terminate(struct zebra_vrf *zvrf);
extern void rtadv_terminate(void);
extern void rtadv_stop_ra(struct interface *ifp);
extern void rtadv_stop_ra_all(void);
extern void rtadv_cmd_init(void);
extern void zebra_interface_radv_disable(ZAPI_HANDLER_ARGS);
extern void zebra_interface_radv_enable(ZAPI_HANDLER_ARGS);
extern void rtadv_add_prefix(struct zebra_if *zif, const struct prefix_ipv6 *p);
extern void rtadv_delete_prefix(struct zebra_if *zif, const struct prefix *p);
#ifdef __cplusplus
}
#endif
#endif /* _ZEBRA_RTADV_H */
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