zebra/rtadv.h

   1 /* Router advertisement
   2  * Copyright (C) 2005 6WIND <jean-mickael.guerin@6wind.com>
   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  *
  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
  20  */
  21
  22 #ifndef _ZEBRA_RTADV_H
  23 #define _ZEBRA_RTADV_H
  24
  25 #include "vty.h"
  26 #include "zebra/interface.h"
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 /* NB: RTADV is defined in zebra/interface.h above */
  33 #if defined(HAVE_RTADV)
  34
  35 /* Router advertisement prefix. */
  36 struct rtadv_prefix {
  37         /* Prefix to be advertised. */
  38         struct prefix_ipv6 prefix;
  39
  40         /* The value to be placed in the Valid Lifetime in the Prefix */
  41         uint32_t AdvValidLifetime;
  42 #define RTADV_VALID_LIFETIME 2592000
  43
  44         /* The value to be placed in the on-link flag */
  45         int AdvOnLinkFlag;
  46
  47         /* The value to be placed in the Preferred Lifetime in the Prefix
  48            Information option, in seconds.*/
  49         uint32_t AdvPreferredLifetime;
  50 #define RTADV_PREFERRED_LIFETIME 604800
  51
  52         /* The value to be placed in the Autonomous Flag. */
  53         int AdvAutonomousFlag;
  54
  55         /* The value to be placed in the Router Address Flag [RFC6275 7.2]. */
  56         int AdvRouterAddressFlag;
  57 #ifndef ND_OPT_PI_FLAG_RADDR
  58 #define ND_OPT_PI_FLAG_RADDR         0x20
  59 #endif
  60 };
  61
  62 /* RFC4861 minimum delay between RAs  */
  63 #ifndef MIN_DELAY_BETWEEN_RAS
  64 #define MIN_DELAY_BETWEEN_RAS        3000
  65 #endif
  66
  67 /* RFC4584 Extension to Sockets API for Mobile IPv6 */
  68
  69 #ifndef ND_OPT_ADV_INTERVAL
  70 #define ND_OPT_ADV_INTERVAL     7   /* Adv Interval Option */
  71 #endif
  72 #ifndef ND_OPT_HA_INFORMATION
  73 #define ND_OPT_HA_INFORMATION   8   /* HA Information Option */
  74 #endif
  75
  76 #ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL
  77 struct nd_opt_adv_interval { /* Advertisement interval option */
  78         uint8_t nd_opt_ai_type;
  79         uint8_t nd_opt_ai_len;
  80         uint16_t nd_opt_ai_reserved;
  81         uint32_t nd_opt_ai_interval;
  82 } __attribute__((__packed__));
  83 #else
  84 #ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL_ND_OPT_AI_TYPE
  85 /* fields may have to be renamed */
  86 #define nd_opt_ai_type          nd_opt_adv_interval_type
  87 #define nd_opt_ai_len           nd_opt_adv_interval_len
  88 #define nd_opt_ai_reserved      nd_opt_adv_interval_reserved
  89 #define nd_opt_ai_interval      nd_opt_adv_interval_ival
  90 #endif
  91 #endif
  92
  93 #ifndef HAVE_STRUCT_ND_OPT_HOMEAGENT_INFO
  94 struct nd_opt_homeagent_info { /* Home Agent info */
  95         uint8_t nd_opt_hai_type;
  96         uint8_t nd_opt_hai_len;
  97         uint16_t nd_opt_hai_reserved;
  98         uint16_t nd_opt_hai_preference;
  99         uint16_t nd_opt_hai_lifetime;
 100 } __attribute__((__packed__));
 101 #endif
 102
 103 #ifndef ND_OPT_RDNSS
 104 #define ND_OPT_RDNSS 25
 105 #endif
 106 #ifndef ND_OPT_DNSSL
 107 #define ND_OPT_DNSSL 31
 108 #endif
 109
 110 #ifndef HAVE_STRUCT_ND_OPT_RDNSS
 111 struct nd_opt_rdnss { /* Recursive DNS server option [RFC8106 5.1] */
 112         uint8_t nd_opt_rdnss_type;
 113         uint8_t nd_opt_rdnss_len;
 114         uint16_t nd_opt_rdnss_reserved;
 115         uint32_t nd_opt_rdnss_lifetime;
 116         /* Followed by one or more IPv6 addresses */
 117 } __attribute__((__packed__));
 118 #endif
 119
 120 #ifndef HAVE_STRUCT_ND_OPT_DNSSL
 121 struct nd_opt_dnssl { /* DNS search list option [RFC8106 5.2] */
 122         uint8_t nd_opt_dnssl_type;
 123         uint8_t nd_opt_dnssl_len;
 124         uint16_t nd_opt_dnssl_reserved;
 125         uint32_t nd_opt_dnssl_lifetime;
 126         /*
 127          * Followed by one or more domain names encoded as in [RFC1035 3.1].
 128          * Multiple domain names are concatenated after encoding. In any case,
 129          * the result is zero-padded to a multiple of 8 octets.
 130          */
 131 } __attribute__((__packed__));
 132 #endif
 133
 134 #endif /* HAVE_RTADV */
 135
 136 typedef enum {
 137         RA_ENABLE = 0,
 138         RA_SUPPRESS,
 139 } ipv6_nd_suppress_ra_status;
 140
 141 extern void rtadv_init(struct zebra_vrf *zvrf);
 142 extern void rtadv_terminate(struct zebra_vrf *zvrf);
 143 extern void rtadv_stop_ra(struct interface *ifp);
 144 extern void rtadv_stop_ra_all(void);
 145 extern void rtadv_cmd_init(void);
 146 extern void zebra_interface_radv_disable(ZAPI_HANDLER_ARGS);
 147 extern void zebra_interface_radv_enable(ZAPI_HANDLER_ARGS);
 148
 149 #ifdef __cplusplus
 150 }
 151 #endif
 152
 153 #endif /* _ZEBRA_RTADV_H */