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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* RIPng related value and structure.
* Copyright (C) 1998 Kunihiro Ishiguro
*/
#ifndef _ZEBRA_RIPNG_RIPNGD_H
#define _ZEBRA_RIPNG_RIPNGD_H
#include <zclient.h>
#include <vty.h>
#include <distribute.h>
#include <vector.h>
#include <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"
DECLARE_MGROUP(RIPNGD);
/* RIPng structure. */
struct ripng {
RB_ENTRY(ripng) entry;
/* VRF this routing instance is associated with. */
char *vrf_name;
/* VRF backpointer (might be NULL if the VRF doesn't exist). */
struct vrf *vrf;
/* Status of the routing instance. */
bool enabled;
/* 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;
/* Linked list of RIPng peers. */
struct list *peer_list;
/* RIPng enabled interfaces. */
vector enable_if;
/* RIPng enabled networks. */
struct agg_table *enable_network;
/* Vector to store passive-interface name. */
vector passive_interface;
/* RIPng offset-lists. */
struct list *offset_list_master;
/* RIPng threads. */
struct event *t_read;
struct event *t_update;
/* Triggered update hack. */
int trigger;
struct event *t_triggered_update;
struct event *t_triggered_interval;
/* RIPng ECMP flag */
uint8_t ecmp;
/* RIPng redistribute configuration. */
struct {
bool enabled;
struct {
char *name;
struct route_map *map;
} route_map;
bool metric_config;
uint8_t metric;
} redist[ZEBRA_ROUTE_MAX];
/* For distribute-list container */
struct distribute_ctx *distribute_ctx;
/* For if_rmap container */
struct if_rmap_ctx *if_rmap_ctx;
};
RB_HEAD(ripng_instance_head, ripng);
RB_PROTOTYPE(ripng_instance_head, ripng, entry, ripng_instance_compare)
/* 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 event *t_timeout;
struct event *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;
};
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 {
/* Parent routing instance. */
struct ripng *ripng;
/* 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];
/* Default information originate. */
uint8_t default_originate;
/* Default information only. */
uint8_t default_only;
/* Wake up thread. */
struct event *t_wakeup;
/* Passive interface. */
int passive;
};
/* RIPng peer information. */
struct ripng_peer {
/* Parent routing instance. */
struct ripng *ripng;
/* 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 event *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) event_add_timer(master, (F), rinfo, (V), &(T))
#define RIPNG_OFFSET_LIST_IN 0
#define RIPNG_OFFSET_LIST_OUT 1
#define RIPNG_OFFSET_LIST_MAX 2
struct ripng_offset_list {
/* Parent routing instance. */
struct ripng *ripng;
char *ifname;
struct {
char *alist_name;
/* struct access_list *alist; */
uint8_t metric;
} direct[RIPNG_OFFSET_LIST_MAX];
};
/* Extern variables. */
extern struct zebra_privs_t ripngd_privs;
extern struct event_loop *master;
extern struct ripng_instance_head ripng_instances;
/* Prototypes. */
extern void ripng_init(void);
extern void ripng_clean(struct ripng *ripng);
extern void ripng_clean_network(struct ripng *ripng);
extern void ripng_interface_clean(struct ripng *ripng);
extern int ripng_enable_network_add(struct ripng *ripng, struct prefix *p);
extern int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p);
extern int ripng_enable_if_add(struct ripng *ripng, const char *ifname);
extern int ripng_enable_if_delete(struct ripng *ripng, const char *ifname);
extern int ripng_passive_interface_set(struct ripng *ripng, const char *ifname);
extern int ripng_passive_interface_unset(struct ripng *ripng,
const char *ifname);
extern void ripng_passive_interface_clean(struct ripng *ripng);
extern void ripng_if_init(void);
extern void ripng_route_map_init(void);
extern void ripng_zebra_vrf_register(struct vrf *vrf);
extern void ripng_zebra_vrf_deregister(struct vrf *vrf);
extern void ripng_terminate(void);
/* zclient_init() is done by ripng_zebra.c:zebra_init() */
extern void zebra_init(struct event_loop *master);
extern void ripng_zebra_stop(void);
extern void ripng_redistribute_conf_update(struct ripng *ripng, int type);
extern void ripng_redistribute_conf_delete(struct ripng *ripng, int type);
extern void ripng_peer_update(struct ripng *ripng, struct sockaddr_in6 *from,
uint8_t version);
extern void ripng_peer_bad_route(struct ripng *ripng,
struct sockaddr_in6 *from);
extern void ripng_peer_bad_packet(struct ripng *ripng,
struct sockaddr_in6 *from);
extern void ripng_peer_display(struct vty *vty, struct ripng *ripng);
extern struct ripng_peer *ripng_peer_lookup(struct ripng *ripng,
struct in6_addr *addr);
extern struct ripng_peer *ripng_peer_lookup_next(struct ripng *ripng,
struct in6_addr *addr);
extern int ripng_peer_list_cmp(struct ripng_peer *p1, struct ripng_peer *p2);
extern void ripng_peer_list_del(void *arg);
extern struct ripng_offset_list *ripng_offset_list_new(struct ripng *ripng,
const char *ifname);
extern void ripng_offset_list_del(struct ripng_offset_list *offset);
extern void ripng_offset_list_free(struct ripng_offset_list *offset);
extern struct ripng_offset_list *ripng_offset_list_lookup(struct ripng *ripng,
const char *ifname);
extern int ripng_offset_list_apply_in(struct ripng *ripng,
struct prefix_ipv6 *p,
struct interface *ifp, uint8_t *metric);
extern int ripng_offset_list_apply_out(struct ripng *ripng,
struct prefix_ipv6 *p,
struct interface *ifp, uint8_t *metric);
extern int offset_list_cmp(struct ripng_offset_list *o1,
struct ripng_offset_list *o2);
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 struct ripng *ripng_info_get_instance(const struct ripng_info *rinfo);
extern void ripng_event(struct ripng *ripng, enum ripng_event event, int sock);
extern int ripng_request(struct interface *ifp);
extern void ripng_redistribute_add(struct ripng *ripng, int type, int sub_type,
struct prefix_ipv6 *p, ifindex_t ifindex,
struct in6_addr *nexthop, route_tag_t tag);
extern void ripng_redistribute_delete(struct ripng *ripng, int type,
int sub_type, struct prefix_ipv6 *p,
ifindex_t ifindex);
extern void ripng_redistribute_withdraw(struct ripng *ripng, int type);
extern void ripng_ecmp_disable(struct ripng *ripng);
extern void ripng_distribute_update_interface(struct interface *);
extern void ripng_if_rmap_update_interface(struct interface *);
extern void ripng_zebra_ipv6_add(struct ripng *ripng, struct agg_node *node);
extern void ripng_zebra_ipv6_delete(struct ripng *ripng, struct agg_node *node);
extern void ripng_redistribute_enable(struct ripng *ripng);
extern void ripng_redistribute_disable(struct ripng *ripng);
extern int ripng_redistribute_check(struct ripng *ripng, int type);
extern void ripng_redistribute_write(struct vty *vty, struct ripng *ripng);
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(ZAPI_CALLBACK_ARGS);
extern int ripng_interface_down(ZAPI_CALLBACK_ARGS);
extern int ripng_interface_add(ZAPI_CALLBACK_ARGS);
extern int ripng_interface_delete(ZAPI_CALLBACK_ARGS);
extern int ripng_interface_address_add(ZAPI_CALLBACK_ARGS);
extern int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS);
extern int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS);
extern void ripng_interface_sync(struct interface *ifp);
extern struct ripng *ripng_lookup_by_vrf_id(vrf_id_t vrf_id);
extern struct ripng *ripng_lookup_by_vrf_name(const char *vrf_name);
extern struct ripng *ripng_create(const char *vrf_name, struct vrf *vrf,
int socket);
extern int ripng_make_socket(struct vrf *vrf);
extern int ripng_network_write(struct vty *vty, struct ripng *ripng);
extern struct ripng_info *ripng_ecmp_add(struct ripng *ripng,
struct ripng_info *rinfo);
extern struct ripng_info *ripng_ecmp_replace(struct ripng *ripng,
struct ripng_info *rinfo);
extern struct ripng_info *ripng_ecmp_delete(struct ripng *ripng,
struct ripng_info *rinfo);
extern void ripng_ecmp_change(struct ripng *ripng);
extern void ripng_vrf_init(void);
extern void ripng_vrf_terminate(void);
extern void ripng_cli_init(void);
extern uint32_t zebra_ecmp_count;
#endif /* _ZEBRA_RIPNG_RIPNGD_H */
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