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Diffstat (limited to 'ripngd/ripngd.h')
| -rw-r--r-- | ripngd/ripngd.h | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/ripngd/ripngd.h b/ripngd/ripngd.h new file mode 100644 index 0000000..3a2bc0c --- /dev/null +++ b/ripngd/ripngd.h @@ -0,0 +1,439 @@ +// 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 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 */ |