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/*
* 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 GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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)
/* 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_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
#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
{
u_int8_t prefix_length;
u_int8_t prefix_options;
union {
u_int16_t _prefix_metric;
u_int16_t _prefix_referenced_lstype;
} u;
#define prefix_metric u._prefix_metric
#define prefix_refer_lstype u._prefix_referenced_lstype
/* followed by one address_prefix */
};
#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) */
/* 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)))
#define ospf6_prefix_in6_addr(in6, op) \
do { \
memset (in6, 0, sizeof (struct in6_addr)); \
memcpy (in6, (caddr_t) (op) + sizeof (struct ospf6_prefix), \
OSPF6_PREFIX_SPACE ((op)->prefix_length)); \
} while (0)
extern void ospf6_prefix_apply_mask (struct ospf6_prefix *op);
extern void ospf6_prefix_options_printbuf (u_int8_t prefix_options,
char *buf, int size);
extern void ospf6_capability_printbuf (char capability, char *buf, int size);
extern void ospf6_options_printbuf (u_char *options, char *buf, int size);
#endif /* OSPF6_PROTO_H */
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