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 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 OSPF6_PROTO_H 23 #define OSPF6_PROTO_H 24 25 /* OSPF protocol version */ 26 #define OSPFV3_VERSION 3 27 28 /* TOS field normaly null */ 29 #define DEFAULT_TOS_VALUE 0x0 30 31 #define ALLSPFROUTERS6 "ff02::5" 32 #define ALLDROUTERS6 "ff02::6" 33 34 #define OSPF6_ROUTER_BIT_W (1 << 3) 35 #define OSPF6_ROUTER_BIT_V (1 << 2) 36 #define OSPF6_ROUTER_BIT_E (1 << 1) 37 #define OSPF6_ROUTER_BIT_B (1 << 0) 38 39 /* OSPF options */ 40 /* present in HELLO, DD, LSA */ 41 #define OSPF6_OPT_SET(x,opt) ((x)[2] |= (opt)) 42 #define OSPF6_OPT_ISSET(x,opt) ((x)[2] & (opt)) 43 #define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt)) 44 #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0) 45 46 #define OSPF6_OPT_DC (1 << 5) /* Demand Circuit handling Capability */ 47 #define OSPF6_OPT_R (1 << 4) /* Forwarding Capability (Any Protocol) */ 48 #define OSPF6_OPT_N (1 << 3) /* Handling Type-7 LSA Capability */ 49 #define OSPF6_OPT_MC (1 << 2) /* Multicasting Capability */ 50 #define OSPF6_OPT_E (1 << 1) /* AS External Capability */ 51 #define OSPF6_OPT_V6 (1 << 0) /* IPv6 forwarding Capability */ 52 53 /* OSPF6 Prefix */ 54 #define OSPF6_PREFIX_MIN_SIZE 4U /* .length == 0 */ 55 struct ospf6_prefix { 56 uint8_t prefix_length; 57 uint8_t prefix_options; 58 union { 59 uint16_t _prefix_metric; 60 uint16_t _prefix_referenced_lstype; 61 } u; 62 #define prefix_metric u._prefix_metric 63 #define prefix_refer_lstype u._prefix_referenced_lstype 64 /* followed by one address_prefix */ 65 struct in6_addr addr[]; 66 }; 67 68 #define OSPF6_PREFIX_OPTION_NU (1 << 0) /* No Unicast */ 69 #define OSPF6_PREFIX_OPTION_LA (1 << 1) /* Local Address */ 70 #define OSPF6_PREFIX_OPTION_MC (1 << 2) /* MultiCast */ 71 #define OSPF6_PREFIX_OPTION_P (1 << 3) /* Propagate (NSSA) */ 72 73 /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */ 74 #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof(struct ospf6_prefix)) 75 76 /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */ 77 #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4) 78 79 /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */ 80 #define OSPF6_PREFIX_SIZE(x) \ 81 (OSPF6_PREFIX_SPACE((x)->prefix_length) + sizeof(struct ospf6_prefix)) 82 83 /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */ 84 #define OSPF6_PREFIX_NEXT(x) \ 85 ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE(x))) 86 87 extern void ospf6_prefix_in6_addr(struct in6_addr *in6, const void *prefix_buf, 88 const struct ospf6_prefix *p); 89 extern void ospf6_prefix_apply_mask(struct ospf6_prefix *op); 90 extern void ospf6_prefix_options_printbuf(uint8_t prefix_options, char *buf, 91 int size); 92 extern void ospf6_capability_printbuf(char capability, char *buf, int size); 93 extern void ospf6_options_printbuf(uint8_t *options, char *buf, int size); 94 95 #endif /* OSPF6_PROTO_H */ 96