/*
* 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 this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_RIPNG_RIPNGD_H
#define _ZEBRA_RIPNG_RIPNGD_H
#include <zclient.h>
#include <vty.h>
#include <distribute.h>
#include "ripng_memory.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 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
/* For max RTE calculation. */
#ifndef IPV6_HDRLEN
#define IPV6_HDRLEN 40
#endif /* IPV6_HDRLEN */
#ifndef IFMINMTU
#define IFMINMTU 576
#endif /* IFMINMTU */
/* YANG paths */
#define RIPNG_INSTANCE "/frr-ripngd:ripngd/instance"
#define RIPNG_IFACE "/frr-interface:lib/interface/frr-ripngd:ripng"
/* RIPng structure. */
struct ripng {
/* RIPng socket. */
int sock;
/* RIPng Parameters.*/
uint8_t command;
uint8_t version;
uint16_t update_time;
uint16_t timeout_time;
uint16_t garbage_time;
int max_mtu;
uint8_t default_metric;
/* Input/output buffer of RIPng. */
struct stream *ibuf;
struct stream *obuf;
/* RIPng routing information base. */
struct agg_table *table;
/* 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;
/* RIPng ECMP flag */
bool ecmp;
/* For redistribute route map. */
struct {
char *name;
struct route_map *map;
bool metric_config;
uint8_t metric;
} route_map[ZEBRA_ROUTE_MAX];
/* For distribute-list container */
struct distribute_ctx *distribute_ctx;
};
/* Routing table entry. */
struct rte {
struct in6_addr addr; /* RIPng destination prefix */
uint16_t tag; /* RIPng tag */
uint8_t prefixlen; /* Length of the RIPng prefix */
uint8_t metric; /* Metric of the RIPng route */
/* The nexthop is stored by the structure
* ripng_nexthop within ripngd.c */
};
/* RIPNG send packet. */
struct ripng_packet {
uint8_t command;
uint8_t version;
uint16_t zero;
struct rte rte[1];
};
/* Each route's information. */
struct ripng_info {
/* This route's type. Static, ripng or aggregate. */
uint8_t type;
/* Sub type for static route. */
uint8_t sub_type;
/* RIPng specific information */
struct in6_addr nexthop;
struct in6_addr from;
/* Which interface does this route come from. */
ifindex_t ifindex;
/* Metric of this route. */
uint8_t metric;
/* Tag field of RIPng packet.*/
uint16_t tag;
/* For aggregation. */
unsigned int suppress;
/* Flags of RIPng route. */
#define RIPNG_RTF_FIB 1
#define RIPNG_RTF_CHANGED 2
uint8_t 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;
uint8_t metric_set;
uint8_t metric_out;
uint16_t tag_out;
struct agg_node *rp;
};
#ifdef notyet
#if 0
/* RIPng tag structure. */
struct ripng_tag
{
/* Tag value. */
uint16_t tag;
/* Port. */
uint16_t port;
/* Multicast group. */
struct in6_addr maddr;
/* Table number. */
int table;
/* Distance. */
int distance;
/* Split horizon. */
uint8_t split_horizon;
/* Poison reverse. */
uint8_t 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;
/* 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. */
uint8_t default_originate;
/* Default information only. */
uint8_t 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. */
uint8_t 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) thread_add_timer (master, (F), rinfo, (V), &(T))
#define RIPNG_TIMER_OFF(T) \
do { \
if (T) { \
thread_cancel(T); \
(T) = NULL; \
} \
} while (0)
#define RIPNG_OFFSET_LIST_IN 0
#define RIPNG_OFFSET_LIST_OUT 1
#define RIPNG_OFFSET_LIST_MAX 2
struct ripng_offset_list {
char *ifname;
struct {
char *alist_name;
/* struct access_list *alist; */
uint8_t metric;
} direct[RIPNG_OFFSET_LIST_MAX];
};
/* Extern variables. */
extern struct ripng *ripng;
extern struct list *peer_list;
extern struct zebra_privs_t ripngd_privs;
extern struct thread_master *master;
/* Prototypes. */
extern void ripng_init(void);
extern void ripng_clean(void);
extern void ripng_clean_network(void);
extern void ripng_interface_clean(void);
extern int ripng_enable_network_add(struct prefix *p);
extern int ripng_enable_network_delete(struct prefix *p);
extern int ripng_enable_if_add(const char *ifname);
extern int ripng_enable_if_delete(const char *ifname);
extern int ripng_passive_interface_set(const char *ifname);
extern int ripng_passive_interface_unset(const char *ifname);
extern void ripng_passive_interface_clean(void);
extern void ripng_if_init(void);
extern void ripng_route_map_init(void);
extern void ripng_terminate(void);
/* zclient_init() is done by ripng_zebra.c:zebra_init() */
extern void zebra_init(struct thread_master *);
extern void ripng_zebra_stop(void);
extern void ripng_redistribute_conf_update(int type);
extern void ripng_redistribute_conf_delete(int type);
extern void ripng_peer_init(void);
extern void ripng_peer_update(struct sockaddr_in6 *, uint8_t);
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 struct ripng_offset_list *ripng_offset_list_new(const char *ifname);
extern void ripng_offset_list_del(struct ripng_offset_list *offset);
extern struct ripng_offset_list *ripng_offset_list_lookup(const char *ifname);
extern struct ripng_offset_list *ripng_offset_list_lookup(const char *ifname);
extern int ripng_offset_list_apply_in(struct prefix_ipv6 *, struct interface *,
uint8_t *);
extern int ripng_offset_list_apply_out(struct prefix_ipv6 *, struct interface *,
uint8_t *);
extern void ripng_offset_init(void);
extern void ripng_offset_clean(void);
extern int ripng_route_rte(struct ripng_info *rinfo);
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 *, ifindex_t,
struct in6_addr *, route_tag_t);
extern void ripng_redistribute_delete(int, int, struct prefix_ipv6 *,
ifindex_t);
extern void ripng_redistribute_withdraw(int type);
extern void ripng_ecmp_disable(void);
extern void ripng_distribute_update_interface(struct interface *);
extern void ripng_if_rmap_update_interface(struct interface *);
extern void ripng_zebra_ipv6_add(struct agg_node *node);
extern void ripng_zebra_ipv6_delete(struct agg_node *node);
extern void ripng_redistribute_clean(void);
extern int ripng_redistribute_check(int);
extern void ripng_redistribute_write(struct vty *);
extern int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p,
struct in6_addr *nexthop, uint16_t tag,
uint8_t 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,
vrf_id_t);
extern int ripng_interface_down(int command, struct zclient *, zebra_size_t,
vrf_id_t);
extern int ripng_interface_add(int command, struct zclient *, zebra_size_t,
vrf_id_t);
extern int ripng_interface_delete(int command, struct zclient *, zebra_size_t,
vrf_id_t);
extern int ripng_interface_address_add(int command, struct zclient *,
zebra_size_t, vrf_id_t);
extern int ripng_interface_address_delete(int command, struct zclient *,
zebra_size_t, vrf_id_t);
extern int ripng_create(int socket);
extern int ripng_make_socket(void);
extern int ripng_network_write(struct vty *);
extern struct ripng_info *ripng_ecmp_add(struct ripng_info *);
extern struct ripng_info *ripng_ecmp_replace(struct ripng_info *);
extern struct ripng_info *ripng_ecmp_delete(struct ripng_info *);
/* Northbound. */
extern void ripng_cli_init(void);
extern const struct frr_yang_module_info frr_ripngd_info;
#endif /* _ZEBRA_RIPNG_RIPNGD_H */