ospf6d/ospf6_proto.h

   1 /*
   2  * Common protocol data and data structures.
   3  * Copyright (C) 2003 Yasuhiro Ohara
   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
  18  * along with GNU Zebra; see the file COPYING.  If not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef OSPF6_PROTO_H
  24 #define OSPF6_PROTO_H
  25
  26 /* OSPF protocol version */
  27 #define OSPFV3_VERSION           3
  28
  29 /* OSPF protocol number. */
  30 #ifndef IPPROTO_OSPFIGP
  31 #define IPPROTO_OSPFIGP         89
  32 #endif
  33
  34 /* TOS field normaly null */
  35 #define DEFAULT_TOS_VALUE      0x0
  36
  37 /* Architectural Constants */
  38 #define LS_REFRESH_TIME                1800  /* 30 min */
  39 #define MIN_LS_INTERVAL                   5
  40 #define MIN_LS_ARRIVAL                    1
  41 #define MAXAGE                         3600  /* 1 hour */
  42 #define CHECK_AGE                       300  /* 5 min */
  43 #define MAX_AGE_DIFF                    900  /* 15 min */
  44 #define LS_INFINITY                0xffffff  /* 24-bit binary value */
  45 #define INITIAL_SEQUENCE_NUMBER  0x80000001  /* signed 32-bit integer */
  46 #define MAX_SEQUENCE_NUMBER      0x7fffffff  /* signed 32-bit integer */
  47
  48 #define ALLSPFROUTERS6 "ff02::5"
  49 #define ALLDROUTERS6   "ff02::6"
  50
  51 /* Configurable Constants */
  52
  53 #define DEFAULT_HELLO_INTERVAL       10
  54 #define DEFAULT_ROUTER_DEAD_INTERVAL 40
  55
  56 #define OSPF6_ROUTER_BIT_W     (1 << 3)
  57 #define OSPF6_ROUTER_BIT_V     (1 << 2)
  58 #define OSPF6_ROUTER_BIT_E     (1 << 1)
  59 #define OSPF6_ROUTER_BIT_B     (1 << 0)
  60
  61 /* OSPF options */
  62 /* present in HELLO, DD, LSA */
  63 #define OSPF6_OPT_SET(x,opt)   ((x)[2] |=  (opt))
  64 #define OSPF6_OPT_ISSET(x,opt) ((x)[2] &   (opt))
  65 #define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
  66 #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
  67
  68 #define OSPF6_OPT_DC (1 << 5)   /* Demand Circuit handling Capability */
  69 #define OSPF6_OPT_R  (1 << 4)   /* Forwarding Capability (Any Protocol) */
  70 #define OSPF6_OPT_N  (1 << 3)   /* Handling Type-7 LSA Capability */
  71 #define OSPF6_OPT_MC (1 << 2)   /* Multicasting Capability */
  72 #define OSPF6_OPT_E  (1 << 1)   /* AS External Capability */
  73 #define OSPF6_OPT_V6 (1 << 0)   /* IPv6 forwarding Capability */
  74
  75 /* OSPF6 Prefix */
  76 struct ospf6_prefix
  77 {
  78   u_int8_t prefix_length;
  79   u_int8_t prefix_options;
  80   union {
  81     u_int16_t _prefix_metric;
  82     u_int16_t _prefix_referenced_lstype;
  83   } u;
  84 #define prefix_metric        u._prefix_metric
  85 #define prefix_refer_lstype  u._prefix_referenced_lstype
  86   /* followed by one address_prefix */
  87 };
  88
  89 #define OSPF6_PREFIX_OPTION_NU (1 << 0)  /* No Unicast */
  90 #define OSPF6_PREFIX_OPTION_LA (1 << 1)  /* Local Address */
  91 #define OSPF6_PREFIX_OPTION_MC (1 << 2)  /* MultiCast */
  92 #define OSPF6_PREFIX_OPTION_P  (1 << 3)  /* Propagate (NSSA) */
  93
  94 /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
  95 #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))
  96
  97 /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
  98 #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
  99
 100 /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
 101 #define OSPF6_PREFIX_SIZE(x) \
 102    (OSPF6_PREFIX_SPACE ((x)->prefix_length) + sizeof (struct ospf6_prefix))
 103
 104 /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
 105 #define OSPF6_PREFIX_NEXT(x) \
 106    ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE (x)))
 107
 108 #define ospf6_prefix_in6_addr(in6, op)                         \
 109 do {                                                           \
 110   memset (in6, 0, sizeof (struct in6_addr));                   \
 111   memcpy (in6, (caddr_t) (op) + sizeof (struct ospf6_prefix),  \
 112           OSPF6_PREFIX_SPACE ((op)->prefix_length));           \
 113 } while (0)
 114
 115 void ospf6_prefix_apply_mask (struct ospf6_prefix *op);
 116 void ospf6_prefix_options_printbuf (u_int8_t prefix_options,
 117                                     char *buf, int size);
 118 void ospf6_capability_printbuf (char capability, char *buf, int size);
 119 void ospf6_options_printbuf (u_char *options, char *buf, int size);
 120
 121 #endif /* OSPF6_PROTO_H */
 122