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 /* TOS field normaly null */
  30 #define DEFAULT_TOS_VALUE      0x0
  31
  32 #define ALLSPFROUTERS6 "ff02::5"
  33 #define ALLDROUTERS6   "ff02::6"
  34
  35 #define OSPF6_ROUTER_BIT_W     (1 << 3)
  36 #define OSPF6_ROUTER_BIT_V     (1 << 2)
  37 #define OSPF6_ROUTER_BIT_E     (1 << 1)
  38 #define OSPF6_ROUTER_BIT_B     (1 << 0)
  39
  40 /* OSPF options */
  41 /* present in HELLO, DD, LSA */
  42 #define OSPF6_OPT_SET(x,opt)   ((x)[2] |=  (opt))
  43 #define OSPF6_OPT_ISSET(x,opt) ((x)[2] &   (opt))
  44 #define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
  45 #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
  46
  47 #define OSPF6_OPT_DC (1 << 5)   /* Demand Circuit handling Capability */
  48 #define OSPF6_OPT_R  (1 << 4)   /* Forwarding Capability (Any Protocol) */
  49 #define OSPF6_OPT_N  (1 << 3)   /* Handling Type-7 LSA Capability */
  50 #define OSPF6_OPT_MC (1 << 2)   /* Multicasting Capability */
  51 #define OSPF6_OPT_E  (1 << 1)   /* AS External Capability */
  52 #define OSPF6_OPT_V6 (1 << 0)   /* IPv6 forwarding Capability */
  53
  54 /* OSPF6 Prefix */
  55 #define OSPF6_PREFIX_MIN_SIZE                  4U /* .length == 0 */
  56 struct ospf6_prefix
  57 {
  58   u_int8_t prefix_length;
  59   u_int8_t prefix_options;
  60   union {
  61     u_int16_t _prefix_metric;
  62     u_int16_t _prefix_referenced_lstype;
  63   } u;
  64 #define prefix_metric        u._prefix_metric
  65 #define prefix_refer_lstype  u._prefix_referenced_lstype
  66   /* followed by one address_prefix */
  67 };
  68
  69 #define OSPF6_PREFIX_OPTION_NU (1 << 0)  /* No Unicast */
  70 #define OSPF6_PREFIX_OPTION_LA (1 << 1)  /* Local Address */
  71 #define OSPF6_PREFIX_OPTION_MC (1 << 2)  /* MultiCast */
  72 #define OSPF6_PREFIX_OPTION_P  (1 << 3)  /* Propagate (NSSA) */
  73
  74 /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
  75 #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))
  76
  77 /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
  78 #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
  79
  80 /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
  81 #define OSPF6_PREFIX_SIZE(x) \
  82    (OSPF6_PREFIX_SPACE ((x)->prefix_length) + sizeof (struct ospf6_prefix))
  83
  84 /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
  85 #define OSPF6_PREFIX_NEXT(x) \
  86    ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE (x)))
  87
  88 #define ospf6_prefix_in6_addr(in6, op)                         \
  89 do {                                                           \
  90   memset (in6, 0, sizeof (struct in6_addr));                   \
  91   memcpy (in6, (caddr_t) (op) + sizeof (struct ospf6_prefix),  \
  92           OSPF6_PREFIX_SPACE ((op)->prefix_length));           \
  93 } while (0)
  94
  95 extern void ospf6_prefix_apply_mask (struct ospf6_prefix *op);
  96 extern void ospf6_prefix_options_printbuf (u_int8_t prefix_options,
  97                                            char *buf, int size);
  98 extern void ospf6_capability_printbuf (char capability, char *buf, int size);
  99 extern void ospf6_options_printbuf (u_char *options, char *buf, int size);
 100
 101 #endif /* OSPF6_PROTO_H */