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 */ 56struct 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) \ 89do { \ 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 95extern void ospf6_prefix_apply_mask (struct ospf6_prefix *op); 96extern void ospf6_prefix_options_printbuf (u_int8_t prefix_options, 97 char *buf, int size); 98extern void ospf6_capability_printbuf (char capability, char *buf, int size); 99extern void ospf6_options_printbuf (u_char *options, char *buf, int size); 100 101#endif /* OSPF6_PROTO_H */ 102