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Diffstat (limited to 'ospf6d/ospf6_proto.h')
| -rw-r--r-- | ospf6d/ospf6_proto.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/ospf6d/ospf6_proto.h b/ospf6d/ospf6_proto.h new file mode 100644 index 0000000..ea476b3 --- /dev/null +++ b/ospf6d/ospf6_proto.h @@ -0,0 +1,106 @@ +/* + * Common protocol data and data structures. + * Copyright (C) 2003 Yasuhiro Ohara + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef OSPF6_PROTO_H +#define OSPF6_PROTO_H + +/* OSPF protocol version */ +#define OSPFV3_VERSION 3 + +/* TOS field normaly null */ +#define DEFAULT_TOS_VALUE 0x0 + +#define ALLSPFROUTERS6 "ff02::5" +#define ALLDROUTERS6 "ff02::6" + +#define OSPF6_ROUTER_BIT_W (1 << 3) +#define OSPF6_ROUTER_BIT_V (1 << 2) +#define OSPF6_ROUTER_BIT_E (1 << 1) +#define OSPF6_ROUTER_BIT_B (1 << 0) +#define OSPF6_ROUTER_BIT_NT (1 << 4) + + +/* OSPF options */ +/* present in HELLO, DD, LSA */ +#define OSPF6_OPT_SET(x, opt) ((x)[2] |= (opt)) +#define OSPF6_OPT_ISSET(x, opt) ((x)[2] & (opt)) +#define OSPF6_OPT_CLEAR(x, opt) ((x)[2] &= ~(opt)) +#define OSPF6_OPT_SET_EXT(x, opt) ((x)[1] |= (opt)) +#define OSPF6_OPT_ISSET_EXT(x, opt) ((x)[1] & (opt)) +#define OSPF6_OPT_CLEAR_EXT(x, opt) ((x)[1] &= ~(opt)) +#define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0) + +#define OSPF6_OPT_AT (1 << 2) /* Authentication trailer Capability */ +#define OSPF6_OPT_L (1 << 1) /* Link local signalling Capability */ +#define OSPF6_OPT_AF (1 << 0) /* Address family Capability */ +/* 2 bits reserved for OSPFv2 migrated options */ +#define OSPF6_OPT_DC (1 << 5) /* Demand Circuit handling Capability */ +#define OSPF6_OPT_R (1 << 4) /* Forwarding Capability (Any Protocol) */ +#define OSPF6_OPT_N (1 << 3) /* Handling Type-7 LSA Capability */ +#define OSPF6_OPT_MC (1 << 2) /* Multicasting Capability */ +#define OSPF6_OPT_E (1 << 1) /* AS External Capability */ +#define OSPF6_OPT_V6 (1 << 0) /* IPv6 forwarding Capability */ + +/* OSPF6 Prefix */ +#define OSPF6_PREFIX_MIN_SIZE 4U /* .length == 0 */ +struct ospf6_prefix { + uint8_t prefix_length; + uint8_t prefix_options; + union { + uint16_t _prefix_metric; + uint16_t _prefix_referenced_lstype; + } u; +#define prefix_metric u._prefix_metric +#define prefix_refer_lstype u._prefix_referenced_lstype + /* followed by one address_prefix */ + struct in6_addr addr[]; +}; + +#define OSPF6_PREFIX_OPTION_NU (1 << 0) /* No Unicast */ +#define OSPF6_PREFIX_OPTION_LA (1 << 1) /* Local Address */ +#define OSPF6_PREFIX_OPTION_MC (1 << 2) /* MultiCast */ +#define OSPF6_PREFIX_OPTION_P (1 << 3) /* Propagate (NSSA) */ +#define OSPF6_PREFIX_OPTION_DN \ + (1 << 4) /* DN bit to prevent loops in VPN environment */ + +/* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */ +#define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof(struct ospf6_prefix)) + +/* size_t OSPF6_PREFIX_SPACE (int prefixlength); */ +#define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4) + +/* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */ +#define OSPF6_PREFIX_SIZE(x) \ + (OSPF6_PREFIX_SPACE((x)->prefix_length) + sizeof(struct ospf6_prefix)) + +/* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */ +#define OSPF6_PREFIX_NEXT(x) \ + ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE(x))) + +extern void ospf6_prefix_in6_addr(struct in6_addr *in6, const void *prefix_buf, + const struct ospf6_prefix *p); +extern void ospf6_prefix_apply_mask(struct ospf6_prefix *op); +extern void ospf6_prefix_options_printbuf(uint8_t prefix_options, char *buf, + int size); +extern void ospf6_capability_printbuf(char capability, char *buf, int size); +extern void ospf6_options_printbuf(uint8_t *options, char *buf, int size); + +#endif /* OSPF6_PROTO_H */ |