[mirror_frr.git] / zebra / irdp.h

/* ICMP Router Discovery Messages
 * Copyright (C) 1997, 2000 Kunihiro Ishiguro
 *
 * 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.  
 */

/* 
 * This file is modified and completed for the Zebra IRDP implementation
 * by Robert Olsson, Swedish University of Agricultural Sciences
 */

#ifndef _IRDP_H
#define _IRDP_H

#include "lib/vty.h"

#define TRUE 1
#define FALSE 0

/* ICMP Messages */
#ifndef ICMP_ROUTERADVERT
#define ICMP_ROUTERADVERT 9
#endif /* ICMP_ROUTERADVERT */

#ifndef ICMP_ROUTERSOLICIT
#define ICMP_ROUTERSOLICIT 10
#endif /* ICMP_ROUTERSOLICT */

/* Multicast groups */
#ifndef INADDR_ALLHOSTS_GROUP
#define INADDR_ALLHOSTS_GROUP 0xe0000001U    /* 224.0.0.1 */
#endif /* INADDR_ALLHOSTS_GROUP */

#ifndef INADDR_ALLRTRS_GROUP
#define INADDR_ALLRTRS_GROUP  0xe0000002U    /* 224.0.0.2 */
#endif /* INADDR_ALLRTRS_GROUP */

/* Default irdp packet interval */
#define IRDP_DEFAULT_INTERVAL 300 

/* Router constants from RFC1256 */
#define MAX_INITIAL_ADVERT_INTERVAL 16
#define MAX_INITIAL_ADVERTISEMENTS   3
#define MAX_RESPONSE_DELAY           2

#define IRDP_MAXADVERTINTERVAL 600
#define IRDP_MINADVERTINTERVAL 450 /* 0.75*600 */
#define IRDP_LIFETIME         1350 /* 3*450 */
#define IRDP_PREFERENCE 0

#define ICMP_MINLEN 8

#define IRDP_LAST_ADVERT_MESSAGES 2 /* The last adverts with Holdtime 0 */

#define IRDP_RX_BUF 1500

/* 
     Comments comes from RFC1256 ICMP Router Discovery Messages. 

     The IP destination address to be used for multicast Router
     Advertisements sent from the interface.  The only permissible
     values are the all-systems multicast address, 224.0.0.1, or the
     limited-broadcast address, 255.255.255.255.  (The all-systems
     address is preferred wherever possible, i.e., on any link where
     all listening hosts support IP multicast.)

     Default: 224.0.0.1 if the router supports IP multicast on the
     interface, else 255.255.255.255 

     The maximum time allowed between sending multicast Router
     Advertisements from the interface, in seconds.  Must be no less
     than 4 seconds and no greater than 1800 seconds.

     Default: 600 seconds 

     The minimum time allowed between sending unsolicited multicast
     Router Advertisements from the interface, in seconds.  Must be no
     less than 3 seconds and no greater than MaxAdvertisementInterval.

     Default: 0.75 * MaxAdvertisementInterval 

     The value to be placed in the Lifetime field of Router
     Advertisements sent from the interface, in seconds.  Must be no
     less than MaxAdvertisementInterval and no greater than 9000
     seconds.

     Default: 3 * MaxAdvertisementInterval 

     The preferability of the address as a default router address,
     relative to other router addresses on the same subnet.  A 32-bit,
     signed, twos-complement integer, with higher values meaning more
     preferable.  The minimum value (hex 80000000) is used to indicate
     that the address, even though it may be advertised, is not to be
     used by neighboring hosts as a default router address.

     Default: 0 
*/

struct irdp_interface 
{
  unsigned long MaxAdvertInterval;
  unsigned long MinAdvertInterval;
  unsigned long Preference;

  u_int32_t flags;

#define IF_ACTIVE               (1<<0) /* ICMP Active */
#define IF_BROADCAST            (1<<1) /* 255.255.255.255 */
#define IF_SOLICIT              (1<<2) /* Solicit active */
#define IF_DEBUG_MESSAGES       (1<<3) 
#define IF_DEBUG_PACKET         (1<<4) 
#define IF_DEBUG_MISC           (1<<5) 
#define IF_SHUTDOWN             (1<<6) 

  struct interface *ifp;
  struct thread *t_advertise;
  unsigned long irdp_sent;
  u_int16_t Lifetime;

 struct list *AdvPrefList;

};

struct Adv 
{
  struct in_addr ip;
  int pref;
};

extern void irdp_init(void);
extern int irdp_sock_init(void);
extern void irdp_finish(void);
extern void irdp_config_write (struct vty *, struct interface *);

#endif /* _IRDP_H */
Commit	Line	Data
	1	/* ICMP Router Discovery Messages
	2	* Copyright (C) 1997, 2000 Kunihiro Ishiguro
	3	*
	4	* This file is part of GNU Zebra.
	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with GNU Zebra; see the file COPYING. If not, write to the Free
	18	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	19	* 02111-1307, USA.
	20	*/
	21
	22	/*
	23	* This file is modified and completed for the Zebra IRDP implementation
	24	* by Robert Olsson, Swedish University of Agricultural Sciences
	25	*/
	26
	27	#ifndef _IRDP_H
	28	#define _IRDP_H
	29
	30	#include "lib/vty.h"
	31
	32	#define TRUE 1
	33	#define FALSE 0
	34
	35	/* ICMP Messages */
	36	#ifndef ICMP_ROUTERADVERT
	37	#define ICMP_ROUTERADVERT 9
	38	#endif /* ICMP_ROUTERADVERT */
	39
	40	#ifndef ICMP_ROUTERSOLICIT
	41	#define ICMP_ROUTERSOLICIT 10
	42	#endif /* ICMP_ROUTERSOLICT */
	43
	44	/* Multicast groups */
	45	#ifndef INADDR_ALLHOSTS_GROUP
	46	#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
	47	#endif /* INADDR_ALLHOSTS_GROUP */
	48
	49	#ifndef INADDR_ALLRTRS_GROUP
	50	#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
	51	#endif /* INADDR_ALLRTRS_GROUP */
	52
	53	/* Default irdp packet interval */
	54	#define IRDP_DEFAULT_INTERVAL 300
	55
	56	/* Router constants from RFC1256 */
	57	#define MAX_INITIAL_ADVERT_INTERVAL 16
	58	#define MAX_INITIAL_ADVERTISEMENTS 3
	59	#define MAX_RESPONSE_DELAY 2
	60
	61	#define IRDP_MAXADVERTINTERVAL 600
	62	#define IRDP_MINADVERTINTERVAL 450 /* 0.75600 /
	63	#define IRDP_LIFETIME 1350 /* 3450 /
	64	#define IRDP_PREFERENCE 0
	65
	66	#define ICMP_MINLEN 8
	67
	68	#define IRDP_LAST_ADVERT_MESSAGES 2 /* The last adverts with Holdtime 0 */
	69
	70	#define IRDP_RX_BUF 1500
	71
	72	/*
	73	Comments comes from RFC1256 ICMP Router Discovery Messages.
	74
	75	The IP destination address to be used for multicast Router
	76	Advertisements sent from the interface. The only permissible
	77	values are the all-systems multicast address, 224.0.0.1, or the
	78	limited-broadcast address, 255.255.255.255. (The all-systems
	79	address is preferred wherever possible, i.e., on any link where
	80	all listening hosts support IP multicast.)
	81
	82	Default: 224.0.0.1 if the router supports IP multicast on the
	83	interface, else 255.255.255.255
	84
	85	The maximum time allowed between sending multicast Router
	86	Advertisements from the interface, in seconds. Must be no less
	87	than 4 seconds and no greater than 1800 seconds.
	88
	89	Default: 600 seconds
	90
	91	The minimum time allowed between sending unsolicited multicast
	92	Router Advertisements from the interface, in seconds. Must be no
	93	less than 3 seconds and no greater than MaxAdvertisementInterval.
	94
	95	Default: 0.75 * MaxAdvertisementInterval
	96
	97	The value to be placed in the Lifetime field of Router
	98	Advertisements sent from the interface, in seconds. Must be no
	99	less than MaxAdvertisementInterval and no greater than 9000
	100	seconds.
	101
	102	Default: 3 * MaxAdvertisementInterval
	103
	104	The preferability of the address as a default router address,
	105	relative to other router addresses on the same subnet. A 32-bit,
	106	signed, twos-complement integer, with higher values meaning more
	107	preferable. The minimum value (hex 80000000) is used to indicate
	108	that the address, even though it may be advertised, is not to be
	109	used by neighboring hosts as a default router address.
	110
	111	Default: 0
	112	*/
	113
	114	struct irdp_interface
	115	{
	116	unsigned long MaxAdvertInterval;
	117	unsigned long MinAdvertInterval;
	118	unsigned long Preference;
	119
	120	u_int32_t flags;
	121
	122	#define IF_ACTIVE (1<<0) /* ICMP Active */
	123	#define IF_BROADCAST (1<<1) /* 255.255.255.255 */
	124	#define IF_SOLICIT (1<<2) /* Solicit active */
	125	#define IF_DEBUG_MESSAGES (1<<3)
	126	#define IF_DEBUG_PACKET (1<<4)
	127	#define IF_DEBUG_MISC (1<<5)
	128	#define IF_SHUTDOWN (1<<6)
	129
	130	struct interface *ifp;
	131	struct thread *t_advertise;
	132	unsigned long irdp_sent;
	133	u_int16_t Lifetime;
	134
	135	struct list *AdvPrefList;
	136
	137	};
	138
	139	struct Adv
	140	{
	141	struct in_addr ip;
	142	int pref;
	143	};
	144
	145	extern void irdp_init(void);
	146	extern int irdp_sock_init(void);
	147	extern void irdp_finish(void);
	148	extern void irdp_config_write (struct vty , struct interface );
	149
	150	#endif /* _IRDP_H */