ospf6_proto.h 3.8 KB

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  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. #ifndef OSPF6_PROTO_H
  23. #define OSPF6_PROTO_H
  24. /* OSPF protocol version */
  25. #define OSPFV3_VERSION 3
  26. /* TOS field normaly null */
  27. #define DEFAULT_TOS_VALUE 0x0
  28. #define ALLSPFROUTERS6 "ff02::5"
  29. #define ALLDROUTERS6 "ff02::6"
  30. #define OSPF6_ROUTER_BIT_W (1 << 3)
  31. #define OSPF6_ROUTER_BIT_V (1 << 2)
  32. #define OSPF6_ROUTER_BIT_E (1 << 1)
  33. #define OSPF6_ROUTER_BIT_B (1 << 0)
  34. /* OSPF options */
  35. /* present in HELLO, DD, LSA */
  36. #define OSPF6_OPT_SET(x,opt) ((x)[2] |= (opt))
  37. #define OSPF6_OPT_ISSET(x,opt) ((x)[2] & (opt))
  38. #define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
  39. #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
  40. #define OSPF6_OPT_DC (1 << 5) /* Demand Circuit handling Capability */
  41. #define OSPF6_OPT_R (1 << 4) /* Forwarding Capability (Any Protocol) */
  42. #define OSPF6_OPT_N (1 << 3) /* Handling Type-7 LSA Capability */
  43. #define OSPF6_OPT_MC (1 << 2) /* Multicasting Capability */
  44. #define OSPF6_OPT_E (1 << 1) /* AS External Capability */
  45. #define OSPF6_OPT_V6 (1 << 0) /* IPv6 forwarding Capability */
  46. /* OSPF6 Prefix */
  47. #define OSPF6_PREFIX_MIN_SIZE 4U /* .length == 0 */
  48. struct ospf6_prefix
  49. {
  50. u_int8_t prefix_length;
  51. u_int8_t prefix_options;
  52. union {
  53. u_int16_t _prefix_metric;
  54. u_int16_t _prefix_referenced_lstype;
  55. } u;
  56. #define prefix_metric u._prefix_metric
  57. #define prefix_refer_lstype u._prefix_referenced_lstype
  58. /* followed by one address_prefix */
  59. };
  60. #define OSPF6_PREFIX_OPTION_NU (1 << 0) /* No Unicast */
  61. #define OSPF6_PREFIX_OPTION_LA (1 << 1) /* Local Address */
  62. #define OSPF6_PREFIX_OPTION_MC (1 << 2) /* MultiCast */
  63. #define OSPF6_PREFIX_OPTION_P (1 << 3) /* Propagate (NSSA) */
  64. /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
  65. #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))
  66. /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
  67. #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
  68. /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
  69. #define OSPF6_PREFIX_SIZE(x) \
  70. (OSPF6_PREFIX_SPACE ((x)->prefix_length) + sizeof (struct ospf6_prefix))
  71. /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
  72. #define OSPF6_PREFIX_NEXT(x) \
  73. ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE (x)))
  74. #define ospf6_prefix_in6_addr(in6, op) \
  75. do { \
  76. memset (in6, 0, sizeof (struct in6_addr)); \
  77. memcpy (in6, (caddr_t) (op) + sizeof (struct ospf6_prefix), \
  78. OSPF6_PREFIX_SPACE ((op)->prefix_length)); \
  79. } while (0)
  80. extern void ospf6_prefix_apply_mask (struct ospf6_prefix *op);
  81. extern void ospf6_prefix_options_printbuf (u_int8_t prefix_options,
  82. char *buf, int size);
  83. extern void ospf6_capability_printbuf (char capability, char *buf, int size);
  84. extern void ospf6_options_printbuf (u_char *options, char *buf, int size);
  85. #endif /* OSPF6_PROTO_H */