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