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/*
* Copyright (C) 1999 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_MESSAGE_H
#define OSPF6_MESSAGE_H
#include "ospf6_prefix.h"
#include "ospf6_lsa.h"
/* Type */
#define OSPF6_MESSAGE_TYPE_NONE 0x0
#define OSPF6_MESSAGE_TYPE_UNKNOWN 0x0
#define OSPF6_MESSAGE_TYPE_HELLO 0x1 /* Discover/maintain neighbors */
#define OSPF6_MESSAGE_TYPE_DBDESC 0x2 /* Summarize database contents */
#define OSPF6_MESSAGE_TYPE_LSREQ 0x3 /* Database download */
#define OSPF6_MESSAGE_TYPE_LSUPDATE 0x4 /* Database update */
#define OSPF6_MESSAGE_TYPE_LSACK 0x5 /* Flooding acknowledgment */
#define OSPF6_MESSAGE_TYPE_MAX 0x6
/* OSPFv3 packet header */
struct ospf6_header
{
u_char version;
u_char type;
u_int16_t len;
u_int32_t router_id;
u_int32_t area_id;
u_int16_t cksum;
u_char instance_id;
u_char reserved;
};
/* Hello */
#define MAXLISTEDNBR 64
struct ospf6_hello
{
u_int32_t interface_id;
u_char rtr_pri;
u_char options[3];
u_int16_t hello_interval;
u_int16_t router_dead_interval;
u_int32_t dr;
u_int32_t bdr;
};
/* Database Description */
struct ospf6_dbdesc
{
u_char mbz1;
u_char options[3];
u_int16_t ifmtu;
u_char mbz2;
u_char bits;
u_int32_t seqnum;
/* Followed by LSAs */
};
#define DEFAULT_INTERFACE_MTU 1500
#define DD_IS_MSBIT_SET(x) ((x) & (1 << 0))
#define DD_MSBIT_SET(x) ((x) |= (1 << 0))
#define DD_MSBIT_CLEAR(x) ((x) &= ~(1 << 0))
#define DD_IS_MBIT_SET(x) ((x) & (1 << 1))
#define DD_MBIT_SET(x) ((x) |= (1 << 1))
#define DD_MBIT_CLEAR(x) ((x) &= ~(1 << 1))
#define DD_IS_IBIT_SET(x) ((x) & (1 << 2))
#define DD_IBIT_SET(x) ((x) |= (1 << 2))
#define DD_IBIT_CLEAR(x) ((x) &= ~(1 << 2))
#define DDBIT_IS_MASTER(x) ((x) & (1 << 0))
#define DDBIT_IS_SLAVE(x) (!((x) & (1 << 0)))
#define DDBIT_SET_MASTER(x) ((x) |= (1 << 0))
#define DDBIT_SET_SLAVE(x) ((x) |= ~(1 << 0))
#define DDBIT_IS_MORE(x) ((x) & (1 << 1))
#define DDBIT_SET_MORE(x) ((x) |= (1 << 1))
#define DDBIT_CLR_MORE(x) ((x) |= ~(1 << 1))
#define DDBIT_IS_INITIAL(x) ((x) & (1 << 2))
#define DDBIT_SET_INITIAL(x) ((x) |= (1 << 2))
#define DDBIT_CLR_INITIAL(x) ((x) |= ~(1 << 2))
#define OSPF6_DBDESC_BIT_MASTER 0x01
#define OSPF6_DBDESC_BIT_MORE 0x02
#define OSPF6_DBDESC_BIT_INITIAL 0x04
/* Link State Request */
struct ospf6_lsreq
{
u_int16_t mbz; /* Must Be Zero */
u_int16_t type; /* LS type */
u_int32_t id; /* Link State ID */
u_int32_t adv_router; /* Advertising Router */
};
/* Link State Update */
struct ospf6_lsupdate
{
u_int32_t lsupdate_num;
};
/* Link State Acknowledgement */
/* no need for structure,
it will include only LSA header in the packet body.*/
/* definition for ospf6_message.c */
#define OSPF6_MESSAGE_RECEIVE_BUFSIZE 5120
#define OSPF6_MESSAGE_IOVEC_END 1024
#define IS_OVER_MTU(message,mtu,addsize) \
(iov_totallen(message)+(addsize) >= \
(mtu)-sizeof(struct ospf6_header))
#define OSPF6_MESSAGE_IOVEC_SIZE 1024
#define OSPF6_MESSAGE_CLEAR(msg) \
do { \
int x; \
for (x = 0; x < OSPF6_MESSAGE_IOVEC_SIZE; x++) \
{ \
(msg)[x].iov_base = NULL; \
(msg)[x].iov_len = 0; \
} \
} while (0)
#define OSPF6_MESSAGE_ATTACH(msg,buf,bufsize) \
do { \
int x; \
for (x = 0; x < OSPF6_MESSAGE_IOVEC_SIZE; x++) \
if ((msg)[x].iov_base == (void *)NULL && (msg)[x].iov_len == 0) \
break; \
if (x < OSPF6_MESSAGE_IOVEC_SIZE - 1) \
{ \
(msg)[x].iov_base = (void *)(buf); \
(msg)[x].iov_len = (bufsize); \
} \
} while (0)
#define OSPF6_MESSAGE_JOIN(msg,join) \
do { \
int x,y; \
for (x = 0; x < OSPF6_MESSAGE_IOVEC_SIZE; x++) \
if ((msg)[x].iov_base == NULL && (msg)[x].iov_len == 0) \
break; \
for (y = x; y < OSPF6_MESSAGE_IOVEC_SIZE; y++) \
{ \
(msg)[y].iov_base = (join)[y - x].iov_base; \
(msg)[y].iov_len = (join)[y - x].iov_len; \
} \
} while (0)
/* Statistics */
struct ospf6_message_stat
{
u_int32_t send;
u_int32_t send_octet;
u_int32_t recv;
u_int32_t recv_octet;
};
/* Type string */
extern char *ospf6_message_type_string[];
/* Function Prototypes */
int ospf6_receive (struct thread *);
int ospf6_send_hello (struct thread *);
int ospf6_send_dbdesc_rxmt (struct thread *);
int ospf6_send_dbdesc (struct thread *);
int ospf6_send_lsreq (struct thread *);
struct ospf6_neighbor;
struct ospf6_interface;
int
ospf6_send_lsupdate_rxmt (struct thread *);
void
ospf6_send_lsupdate_direct (struct ospf6_lsa *, struct ospf6_neighbor *);
void
ospf6_send_lsupdate_flood (struct ospf6_lsa *, struct ospf6_interface *);
int ospf6_send_lsack_delayed (struct thread *);
int ospf6_send_lsack_direct (struct thread *);
void ospf6_message_send (u_char, struct iovec *, struct in6_addr *, u_int);
#endif /* OSPF6_MESSAGE_H */
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