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 /* RFC4584 Extension to Sockets API for Mobile IPv6 */
  63
  64 #ifndef ND_OPT_ADV_INTERVAL
  65 #define ND_OPT_ADV_INTERVAL     7   /* Adv Interval Option */
  66 #endif
  67 #ifndef ND_OPT_HA_INFORMATION
  68 #define ND_OPT_HA_INFORMATION   8   /* HA Information Option */
  69 #endif
  70
  71 #ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL
  72 struct nd_opt_adv_interval { /* Advertisement interval option */
  73         uint8_t nd_opt_ai_type;
  74         uint8_t nd_opt_ai_len;
  75         uint16_t nd_opt_ai_reserved;
  76         uint32_t nd_opt_ai_interval;
  77 } __attribute__((__packed__));
  78 #else
  79 #ifndef HAVE_STRUCT_ND_OPT_ADV_INTERVAL_ND_OPT_AI_TYPE
  80 /* fields may have to be renamed */
  81 #define nd_opt_ai_type          nd_opt_adv_interval_type
  82 #define nd_opt_ai_len           nd_opt_adv_interval_len
  83 #define nd_opt_ai_reserved      nd_opt_adv_interval_reserved
  84 #define nd_opt_ai_interval      nd_opt_adv_interval_ival
  85 #endif
  86 #endif
  87
  88 #ifndef HAVE_STRUCT_ND_OPT_HOMEAGENT_INFO
  89 struct nd_opt_homeagent_info { /* Home Agent info */
  90         uint8_t nd_opt_hai_type;
  91         uint8_t nd_opt_hai_len;
  92         uint16_t nd_opt_hai_reserved;
  93         uint16_t nd_opt_hai_preference;
  94         uint16_t nd_opt_hai_lifetime;
  95 } __attribute__((__packed__));
  96 #endif
  97
  98 #ifndef ND_OPT_RDNSS
  99 #define ND_OPT_RDNSS 25
 100 #endif
 101 #ifndef ND_OPT_DNSSL
 102 #define ND_OPT_DNSSL 31
 103 #endif
 104
 105 #ifndef HAVE_STRUCT_ND_OPT_RDNSS
 106 struct nd_opt_rdnss { /* Recursive DNS server option [RFC8106 5.1] */
 107         uint8_t nd_opt_rdnss_type;
 108         uint8_t nd_opt_rdnss_len;
 109         uint16_t nd_opt_rdnss_reserved;
 110         uint32_t nd_opt_rdnss_lifetime;
 111         /* Followed by one or more IPv6 addresses */
 112 } __attribute__((__packed__));
 113 #endif
 114
 115 #ifndef HAVE_STRUCT_ND_OPT_DNSSL
 116 struct nd_opt_dnssl { /* DNS search list option [RFC8106 5.2] */
 117         uint8_t nd_opt_dnssl_type;
 118         uint8_t nd_opt_dnssl_len;
 119         uint16_t nd_opt_dnssl_reserved;
 120         uint32_t nd_opt_dnssl_lifetime;
 121         /*
 122          * Followed by one or more domain names encoded as in [RFC1035 3.1].
 123          * Multiple domain names are concatenated after encoding. In any case,
 124          * the result is zero-padded to a multiple of 8 octets.
 125          */
 126 } __attribute__((__packed__));
 127 #endif
 128
 129 extern const char *rtadv_pref_strs[];
 130
 131 #endif /* HAVE_RTADV */
 132
 133 typedef enum {
 134         RA_ENABLE = 0,
 135         RA_SUPPRESS,
 136 } ipv6_nd_suppress_ra_status;
 137
 138 extern void rtadv_init(struct zebra_vrf *zvrf);
 139 extern void rtadv_terminate(struct zebra_vrf *zvrf);
 140 extern void rtadv_cmd_init(void);
 141 extern void zebra_interface_radv_disable(ZAPI_HANDLER_ARGS);
 142 extern void zebra_interface_radv_enable(ZAPI_HANDLER_ARGS);
 143
 144 #ifdef __cplusplus
 145 }
 146 #endif
 147
 148 #endif /* _ZEBRA_RTADV_H */