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/*
* RIPng related value and structure.
* Copyright (C) 1998 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.
*/
#ifndef _ZEBRA_RIPNG_RIPNGD_H
#define _ZEBRA_RIPNG_RIPNGD_H
#include <zclient.h>
#include <vty.h>
/* RIPng version and port number. */
#define RIPNG_V1 1
#define RIPNG_PORT_DEFAULT 521
#define RIPNG_VTY_PORT 2603
#define RIPNG_MAX_PACKET_SIZE 1500
#define RIPNG_PRIORITY_DEFAULT 0
/* RIPng commands. */
#define RIPNG_REQUEST 1
#define RIPNG_RESPONSE 2
/* RIPng metric and multicast group address. */
#define RIPNG_METRIC_INFINITY 16
#define RIPNG_METRIC_NEXTHOP 0xff
#define RIPNG_GROUP "ff02::9"
/* RIPng timers. */
#define RIPNG_UPDATE_TIMER_DEFAULT 30
#define RIPNG_TIMEOUT_TIMER_DEFAULT 180
#define RIPNG_GARBAGE_TIMER_DEFAULT 120
/* RIPng peer timeout value. */
#define RIPNG_PEER_TIMER_DEFAULT 180
/* Default config file name. */
#define RIPNG_DEFAULT_CONFIG "ripngd.conf"
/* RIPng route types. */
#define RIPNG_ROUTE_RTE 0
#define RIPNG_ROUTE_STATIC 1
#define RIPNG_ROUTE_DEFAULT 2
#define RIPNG_ROUTE_REDISTRIBUTE 3
#define RIPNG_ROUTE_INTERFACE 4
#define RIPNG_ROUTE_AGGREGATE 5
/* Interface send/receive configuration. */
#define RIPNG_SEND_UNSPEC 0
#define RIPNG_SEND_OFF 1
#define RIPNG_RECEIVE_UNSPEC 0
#define RIPNG_RECEIVE_OFF 1
/* RIP default route's accept/announce methods. */
#define RIPNG_DEFAULT_ADVERTISE_UNSPEC 0
#define RIPNG_DEFAULT_ADVERTISE_NONE 1
#define RIPNG_DEFAULT_ADVERTISE 2
#define RIPNG_DEFAULT_ACCEPT_UNSPEC 0
#define RIPNG_DEFAULT_ACCEPT_NONE 1
#define RIPNG_DEFAULT_ACCEPT 2
/* Default value for "default-metric" command. */
#define RIPNG_DEFAULT_METRIC_DEFAULT 1
/* For max RTE calculation. */
#ifndef IPV6_HDRLEN
#define IPV6_HDRLEN 40
#endif /* IPV6_HDRLEN */
#ifndef IFMINMTU
#define IFMINMTU 576
#endif /* IFMINMTU */
/* RIPng structure. */
struct ripng
{
/* RIPng socket. */
int sock;
/* RIPng Parameters.*/
u_char command;
u_char version;
unsigned long update_time;
unsigned long timeout_time;
unsigned long garbage_time;
int max_mtu;
int default_metric;
int default_information;
/* Input/output buffer of RIPng. */
struct stream *ibuf;
struct stream *obuf;
/* RIPng routing information base. */
struct route_table *table;
/* RIPng only static route information. */
struct route_table *route;
/* RIPng aggregate route information. */
struct route_table *aggregate;
/* RIPng threads. */
struct thread *t_read;
struct thread *t_write;
struct thread *t_update;
struct thread *t_garbage;
struct thread *t_zebra;
/* Triggered update hack. */
int trigger;
struct thread *t_triggered_update;
struct thread *t_triggered_interval;
/* For redistribute route map. */
struct
{
char *name;
struct route_map *map;
int metric_config;
u_int32_t metric;
} route_map[ZEBRA_ROUTE_MAX];
};
/* Routing table entry. */
struct rte
{
struct in6_addr addr; /* RIPng destination prefix */
u_short tag; /* RIPng tag */
u_char prefixlen; /* Length of the RIPng prefix */
u_char metric; /* Metric of the RIPng route */
/* The nexthop is stored by the structure
* ripng_nexthop within ripngd.c */
};
/* RIPNG send packet. */
struct ripng_packet
{
u_char command;
u_char version;
u_int16_t zero;
struct rte rte[1];
};
/* Each route's information. */
struct ripng_info
{
/* This route's type. Static, ripng or aggregate. */
u_char type;
/* Sub type for static route. */
u_char sub_type;
/* RIPng specific information */
struct in6_addr nexthop;
struct in6_addr from;
/* Which interface does this route come from. */
unsigned int ifindex;
/* Metric of this route. */
u_char metric;
/* Tag field of RIPng packet.*/
u_int16_t tag;
/* For aggregation. */
unsigned int suppress;
/* Flags of RIPng route. */
#define RIPNG_RTF_FIB 1
#define RIPNG_RTF_CHANGED 2
u_char flags;
/* Garbage collect timer. */
struct thread *t_timeout;
struct thread *t_garbage_collect;
/* Route-map features - this variables can be changed. */
struct in6_addr nexthop_out;
u_char metric_set;
u_char metric_out;
u_short tag_out;
struct route_node *rp;
};
#ifdef notyet
#if 0
/* RIPng tag structure. */
struct ripng_tag
{
/* Tag value. */
u_int16_t tag;
/* Port. */
u_int16_t port;
/* Multicast group. */
struct in6_addr maddr;
/* Table number. */
int table;
/* Distance. */
int distance;
/* Split horizon. */
u_char split_horizon;
/* Poison reverse. */
u_char poison_reverse;
};
#endif /* 0 */
#endif /* not yet */
typedef enum {
RIPNG_NO_SPLIT_HORIZON = 0,
RIPNG_SPLIT_HORIZON,
RIPNG_SPLIT_HORIZON_POISONED_REVERSE
} split_horizon_policy_t;
/* RIPng specific interface configuration. */
struct ripng_interface
{
/* RIPng is enabled on this interface. */
int enable_network;
int enable_interface;
/* RIPng is running on this interface. */
int running;
/* Split horizon flag. */
split_horizon_policy_t split_horizon;
split_horizon_policy_t split_horizon_default;
/* For filter type slot. */
#define RIPNG_FILTER_IN 0
#define RIPNG_FILTER_OUT 1
#define RIPNG_FILTER_MAX 2
/* Access-list. */
struct access_list *list[RIPNG_FILTER_MAX];
/* Prefix-list. */
struct prefix_list *prefix[RIPNG_FILTER_MAX];
/* Route-map. */
struct route_map *routemap[RIPNG_FILTER_MAX];
#ifdef notyet
#if 0
/* RIPng tag configuration. */
struct ripng_tag *rtag;
#endif /* 0 */
#endif /* notyet */
/* Default information originate. */
u_char default_originate;
/* Default information only. */
u_char default_only;
/* Wake up thread. */
struct thread *t_wakeup;
/* Passive interface. */
int passive;
};
/* RIPng peer information. */
struct ripng_peer
{
/* Peer address. */
struct in6_addr addr;
/* Peer RIPng tag value. */
int domain;
/* Last update time. */
time_t uptime;
/* Peer RIP version. */
u_char version;
/* Statistics. */
int recv_badpackets;
int recv_badroutes;
/* Timeout thread. */
struct thread *t_timeout;
};
/* All RIPng events. */
enum ripng_event
{
RIPNG_READ,
RIPNG_ZEBRA,
RIPNG_REQUEST_EVENT,
RIPNG_UPDATE_EVENT,
RIPNG_TRIGGERED_UPDATE,
};
/* RIPng timer on/off macro. */
#define RIPNG_TIMER_ON(T,F,V) \
do { \
if (!(T)) \
(T) = thread_add_timer (master, (F), rinfo, (V)); \
} while (0)
#define RIPNG_TIMER_OFF(T) \
do { \
if (T) \
{ \
thread_cancel(T); \
(T) = NULL; \
} \
} while (0)
/* Count prefix size from mask length */
#define PSIZE(a) (((a) + 7) / (8))
/* Extern variables. */
extern struct ripng *ripng;
extern struct thread_master *master;
/* Prototypes. */
extern void ripng_init (void);
extern void ripng_reset (void);
extern void ripng_clean (void);
extern void ripng_clean_network (void);
extern void ripng_interface_clean (void);
extern void ripng_interface_reset (void);
extern void ripng_passive_interface_clean (void);
extern void ripng_if_init (void);
extern void ripng_route_map_init (void);
extern void ripng_route_map_reset (void);
extern void ripng_terminate (void);
/* zclient_init() is done by ripng_zebra.c:zebra_init() */
extern void zebra_init (void);
extern void ripng_zclient_start (void);
extern void ripng_zclient_reset (void);
extern void ripng_offset_init (void);
extern int config_write_ripng_offset_list (struct vty *);
extern void ripng_peer_init (void);
extern void ripng_peer_update (struct sockaddr_in6 *, u_char);
extern void ripng_peer_bad_route (struct sockaddr_in6 *);
extern void ripng_peer_bad_packet (struct sockaddr_in6 *);
extern void ripng_peer_display (struct vty *);
extern struct ripng_peer *ripng_peer_lookup (struct in6_addr *);
extern struct ripng_peer *ripng_peer_lookup_next (struct in6_addr *);
extern int ripng_offset_list_apply_in (struct prefix_ipv6 *,
struct interface *, u_char *);
extern int ripng_offset_list_apply_out (struct prefix_ipv6 *,
struct interface *, u_char *);
extern void ripng_offset_clean (void);
extern struct ripng_info * ripng_info_new (void);
extern void ripng_info_free (struct ripng_info *rinfo);
extern void ripng_event (enum ripng_event, int);
extern int ripng_request (struct interface *ifp);
extern void ripng_redistribute_add (int, int, struct prefix_ipv6 *,
unsigned int, struct in6_addr *);
extern void ripng_redistribute_delete (int, int, struct prefix_ipv6 *,
unsigned int);
extern void ripng_redistribute_withdraw (int type);
extern void ripng_distribute_update_interface (struct interface *);
extern void ripng_if_rmap_update_interface (struct interface *);
extern void ripng_zebra_ipv6_add (struct prefix_ipv6 *p,
struct in6_addr *nexthop,
unsigned int ifindex, u_char metric);
extern void ripng_zebra_ipv6_delete (struct prefix_ipv6 *p,
struct in6_addr *nexthop,
unsigned int ifindex);
extern void ripng_redistribute_clean (void);
extern int ripng_redistribute_check (int);
extern void ripng_redistribute_write (struct vty *, int);
extern int ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p,
struct in6_addr *nexthop,
u_int16_t tag, u_char metric);
extern int ripng_send_packet (caddr_t buf, int bufsize,
struct sockaddr_in6 *to, struct interface *ifp);
extern void ripng_packet_dump (struct ripng_packet *packet, int size,
const char *sndrcv);
extern int ripng_interface_up (int command, struct zclient *, zebra_size_t);
extern int ripng_interface_down (int command, struct zclient *, zebra_size_t);
extern int ripng_interface_add (int command, struct zclient *, zebra_size_t);
extern int ripng_interface_delete (int command, struct zclient *, zebra_size_t);
extern int ripng_interface_address_add (int command, struct zclient *, zebra_size_t);
extern int ripng_interface_address_delete (int command, struct zclient *, zebra_size_t);
extern int ripng_network_write (struct vty *, int);
#endif /* _ZEBRA_RIPNG_RIPNGD_H */
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