mirror of https://github.com/FRRouting/frr.git
439 lines
13 KiB
C
439 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* RIPng related value and structure.
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* Copyright (C) 1998 Kunihiro Ishiguro
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*/
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#ifndef _ZEBRA_RIPNG_RIPNGD_H
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#define _ZEBRA_RIPNG_RIPNGD_H
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#include <zclient.h>
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#include <vty.h>
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#include <distribute.h>
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#include <vector.h>
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#include <memory.h>
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/* RIPng version and port number. */
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#define RIPNG_V1 1
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#define RIPNG_PORT_DEFAULT 521
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#define RIPNG_VTY_PORT 2603
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#define RIPNG_MAX_PACKET_SIZE 1500
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#define RIPNG_PRIORITY_DEFAULT 0
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/* RIPng commands. */
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#define RIPNG_REQUEST 1
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#define RIPNG_RESPONSE 2
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/* RIPng metric and multicast group address. */
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#define RIPNG_METRIC_INFINITY 16
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#define RIPNG_METRIC_NEXTHOP 0xff
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#define RIPNG_GROUP "ff02::9"
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/* RIPng peer timeout value. */
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#define RIPNG_PEER_TIMER_DEFAULT 180
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/* Default config file name. */
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#define RIPNG_DEFAULT_CONFIG "ripngd.conf"
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/* RIPng route types. */
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#define RIPNG_ROUTE_RTE 0
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#define RIPNG_ROUTE_STATIC 1
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#define RIPNG_ROUTE_DEFAULT 2
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#define RIPNG_ROUTE_REDISTRIBUTE 3
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#define RIPNG_ROUTE_INTERFACE 4
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#define RIPNG_ROUTE_AGGREGATE 5
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/* Interface send/receive configuration. */
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#define RIPNG_SEND_UNSPEC 0
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#define RIPNG_SEND_OFF 1
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#define RIPNG_RECEIVE_UNSPEC 0
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#define RIPNG_RECEIVE_OFF 1
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/* RIP default route's accept/announce methods. */
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#define RIPNG_DEFAULT_ADVERTISE_UNSPEC 0
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#define RIPNG_DEFAULT_ADVERTISE_NONE 1
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#define RIPNG_DEFAULT_ADVERTISE 2
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#define RIPNG_DEFAULT_ACCEPT_UNSPEC 0
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#define RIPNG_DEFAULT_ACCEPT_NONE 1
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#define RIPNG_DEFAULT_ACCEPT 2
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/* For max RTE calculation. */
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#ifndef IPV6_HDRLEN
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#define IPV6_HDRLEN 40
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#endif /* IPV6_HDRLEN */
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#ifndef IFMINMTU
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#define IFMINMTU 576
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#endif /* IFMINMTU */
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/* YANG paths */
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#define RIPNG_INSTANCE "/frr-ripngd:ripngd/instance"
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#define RIPNG_IFACE "/frr-interface:lib/interface/frr-ripngd:ripng"
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DECLARE_MGROUP(RIPNGD);
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/* RIPng structure. */
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struct ripng {
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RB_ENTRY(ripng) entry;
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/* VRF this routing instance is associated with. */
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char *vrf_name;
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/* VRF backpointer (might be NULL if the VRF doesn't exist). */
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struct vrf *vrf;
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/* Status of the routing instance. */
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bool enabled;
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/* RIPng socket. */
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int sock;
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/* RIPng Parameters.*/
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uint8_t command;
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uint8_t version;
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uint16_t update_time;
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uint16_t timeout_time;
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uint16_t garbage_time;
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int max_mtu;
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uint8_t default_metric;
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/* Input/output buffer of RIPng. */
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struct stream *ibuf;
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struct stream *obuf;
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/* RIPng routing information base. */
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struct agg_table *table;
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/* Linked list of RIPng peers. */
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struct list *peer_list;
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/* RIPng enabled interfaces. */
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vector enable_if;
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/* RIPng enabled networks. */
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struct agg_table *enable_network;
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/* Vector to store passive-interface name. */
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vector passive_interface;
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/* RIPng offset-lists. */
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struct list *offset_list_master;
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/* RIPng threads. */
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struct event *t_read;
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struct event *t_update;
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/* Triggered update hack. */
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int trigger;
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struct event *t_triggered_update;
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struct event *t_triggered_interval;
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/* RIPng ECMP flag */
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uint8_t ecmp;
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/* RIPng redistribute configuration. */
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struct {
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bool enabled;
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struct {
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char *name;
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struct route_map *map;
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} route_map;
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bool metric_config;
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uint8_t metric;
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} redist[ZEBRA_ROUTE_MAX];
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/* For distribute-list container */
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struct distribute_ctx *distribute_ctx;
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/* For if_rmap container */
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struct if_rmap_ctx *if_rmap_ctx;
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};
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RB_HEAD(ripng_instance_head, ripng);
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RB_PROTOTYPE(ripng_instance_head, ripng, entry, ripng_instance_compare)
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/* Routing table entry. */
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struct rte {
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struct in6_addr addr; /* RIPng destination prefix */
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uint16_t tag; /* RIPng tag */
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uint8_t prefixlen; /* Length of the RIPng prefix */
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uint8_t metric; /* Metric of the RIPng route */
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/* The nexthop is stored by the structure
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* ripng_nexthop within ripngd.c */
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};
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/* RIPNG send packet. */
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struct ripng_packet {
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uint8_t command;
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uint8_t version;
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uint16_t zero;
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struct rte rte[1];
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};
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/* Each route's information. */
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struct ripng_info {
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/* This route's type. Static, ripng or aggregate. */
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uint8_t type;
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/* Sub type for static route. */
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uint8_t sub_type;
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/* RIPng specific information */
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struct in6_addr nexthop;
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struct in6_addr from;
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/* Which interface does this route come from. */
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ifindex_t ifindex;
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/* Metric of this route. */
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uint8_t metric;
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/* Tag field of RIPng packet.*/
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uint16_t tag;
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/* For aggregation. */
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unsigned int suppress;
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/* Flags of RIPng route. */
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#define RIPNG_RTF_FIB 1
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#define RIPNG_RTF_CHANGED 2
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uint8_t flags;
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/* Garbage collect timer. */
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struct event *t_timeout;
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struct event *t_garbage_collect;
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/* Route-map features - this variables can be changed. */
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struct in6_addr nexthop_out;
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uint8_t metric_set;
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uint8_t metric_out;
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uint16_t tag_out;
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struct agg_node *rp;
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};
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typedef enum {
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RIPNG_NO_SPLIT_HORIZON = 0,
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RIPNG_SPLIT_HORIZON,
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RIPNG_SPLIT_HORIZON_POISONED_REVERSE
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} split_horizon_policy_t;
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/* RIPng specific interface configuration. */
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struct ripng_interface {
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/* Parent routing instance. */
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struct ripng *ripng;
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/* RIPng is enabled on this interface. */
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int enable_network;
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int enable_interface;
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/* RIPng is running on this interface. */
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int running;
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/* Split horizon flag. */
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split_horizon_policy_t split_horizon;
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/* For filter type slot. */
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#define RIPNG_FILTER_IN 0
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#define RIPNG_FILTER_OUT 1
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#define RIPNG_FILTER_MAX 2
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/* Access-list. */
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struct access_list *list[RIPNG_FILTER_MAX];
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/* Prefix-list. */
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struct prefix_list *prefix[RIPNG_FILTER_MAX];
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/* Route-map. */
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struct route_map *routemap[RIPNG_FILTER_MAX];
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/* Default information originate. */
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uint8_t default_originate;
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/* Default information only. */
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uint8_t default_only;
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/* Wake up thread. */
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struct event *t_wakeup;
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/* Passive interface. */
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int passive;
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};
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/* RIPng peer information. */
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struct ripng_peer {
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/* Parent routing instance. */
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struct ripng *ripng;
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/* Peer address. */
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struct in6_addr addr;
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/* Peer RIPng tag value. */
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int domain;
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/* Last update time. */
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time_t uptime;
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/* Peer RIP version. */
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uint8_t version;
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/* Statistics. */
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int recv_badpackets;
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int recv_badroutes;
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/* Timeout thread. */
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struct event *t_timeout;
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};
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/* All RIPng events. */
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enum ripng_event {
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RIPNG_READ,
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RIPNG_ZEBRA,
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RIPNG_REQUEST_EVENT,
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RIPNG_UPDATE_EVENT,
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RIPNG_TRIGGERED_UPDATE,
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};
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/* RIPng timer on/off macro. */
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#define RIPNG_TIMER_ON(T, F, V) event_add_timer(master, (F), rinfo, (V), &(T))
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#define RIPNG_OFFSET_LIST_IN 0
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#define RIPNG_OFFSET_LIST_OUT 1
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#define RIPNG_OFFSET_LIST_MAX 2
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struct ripng_offset_list {
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/* Parent routing instance. */
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struct ripng *ripng;
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char *ifname;
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struct {
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char *alist_name;
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/* struct access_list *alist; */
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uint8_t metric;
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} direct[RIPNG_OFFSET_LIST_MAX];
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};
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/* Extern variables. */
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extern struct zebra_privs_t ripngd_privs;
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extern struct event_loop *master;
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extern struct ripng_instance_head ripng_instances;
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/* Prototypes. */
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extern void ripng_init(void);
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extern void ripng_clean(struct ripng *ripng);
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extern void ripng_clean_network(struct ripng *ripng);
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extern void ripng_interface_clean(struct ripng *ripng);
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extern int ripng_enable_network_add(struct ripng *ripng, struct prefix *p);
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extern int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p);
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extern int ripng_enable_if_add(struct ripng *ripng, const char *ifname);
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extern int ripng_enable_if_delete(struct ripng *ripng, const char *ifname);
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extern int ripng_passive_interface_set(struct ripng *ripng, const char *ifname);
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extern int ripng_passive_interface_unset(struct ripng *ripng,
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const char *ifname);
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extern void ripng_passive_interface_clean(struct ripng *ripng);
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extern void ripng_if_init(void);
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extern void ripng_route_map_init(void);
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extern void ripng_zebra_vrf_register(struct vrf *vrf);
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extern void ripng_zebra_vrf_deregister(struct vrf *vrf);
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extern void ripng_terminate(void);
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/* zclient_init() is done by ripng_zebra.c:zebra_init() */
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extern void zebra_init(struct event_loop *master);
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extern void ripng_zebra_stop(void);
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extern void ripng_redistribute_conf_update(struct ripng *ripng, int type);
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extern void ripng_redistribute_conf_delete(struct ripng *ripng, int type);
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extern void ripng_peer_update(struct ripng *ripng, struct sockaddr_in6 *from,
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uint8_t version);
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extern void ripng_peer_bad_route(struct ripng *ripng,
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struct sockaddr_in6 *from);
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extern void ripng_peer_bad_packet(struct ripng *ripng,
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struct sockaddr_in6 *from);
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extern void ripng_peer_display(struct vty *vty, struct ripng *ripng);
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extern struct ripng_peer *ripng_peer_lookup(struct ripng *ripng,
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struct in6_addr *addr);
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extern struct ripng_peer *ripng_peer_lookup_next(struct ripng *ripng,
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struct in6_addr *addr);
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extern int ripng_peer_list_cmp(struct ripng_peer *p1, struct ripng_peer *p2);
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extern void ripng_peer_list_del(void *arg);
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extern struct ripng_offset_list *ripng_offset_list_new(struct ripng *ripng,
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const char *ifname);
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extern void ripng_offset_list_del(struct ripng_offset_list *offset);
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extern void ripng_offset_list_free(struct ripng_offset_list *offset);
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extern struct ripng_offset_list *ripng_offset_list_lookup(struct ripng *ripng,
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const char *ifname);
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extern int ripng_offset_list_apply_in(struct ripng *ripng,
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struct prefix_ipv6 *p,
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struct interface *ifp, uint8_t *metric);
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extern int ripng_offset_list_apply_out(struct ripng *ripng,
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struct prefix_ipv6 *p,
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struct interface *ifp, uint8_t *metric);
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extern int offset_list_cmp(struct ripng_offset_list *o1,
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struct ripng_offset_list *o2);
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extern int ripng_route_rte(struct ripng_info *rinfo);
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extern struct ripng_info *ripng_info_new(void);
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extern void ripng_info_free(struct ripng_info *rinfo);
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extern struct ripng *ripng_info_get_instance(const struct ripng_info *rinfo);
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extern void ripng_event(struct ripng *ripng, enum ripng_event event, int sock);
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extern int ripng_request(struct interface *ifp);
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extern void ripng_redistribute_add(struct ripng *ripng, int type, int sub_type,
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struct prefix_ipv6 *p, ifindex_t ifindex,
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struct in6_addr *nexthop, route_tag_t tag);
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extern void ripng_redistribute_delete(struct ripng *ripng, int type,
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int sub_type, struct prefix_ipv6 *p,
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ifindex_t ifindex);
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extern void ripng_redistribute_withdraw(struct ripng *ripng, int type);
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extern void ripng_ecmp_disable(struct ripng *ripng);
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extern void ripng_distribute_update_interface(struct interface *);
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extern void ripng_if_rmap_update_interface(struct interface *);
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extern void ripng_zebra_ipv6_add(struct ripng *ripng, struct agg_node *node);
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extern void ripng_zebra_ipv6_delete(struct ripng *ripng, struct agg_node *node);
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extern void ripng_redistribute_enable(struct ripng *ripng);
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extern void ripng_redistribute_disable(struct ripng *ripng);
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extern int ripng_redistribute_check(struct ripng *ripng, int type);
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extern void ripng_redistribute_write(struct vty *vty, struct ripng *ripng);
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extern int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p,
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struct in6_addr *nexthop, uint16_t tag,
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uint8_t metric);
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extern int ripng_send_packet(caddr_t buf, int bufsize, struct sockaddr_in6 *to,
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struct interface *ifp);
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extern void ripng_packet_dump(struct ripng_packet *packet, int size,
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const char *sndrcv);
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extern int ripng_interface_up(ZAPI_CALLBACK_ARGS);
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extern int ripng_interface_down(ZAPI_CALLBACK_ARGS);
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extern int ripng_interface_add(ZAPI_CALLBACK_ARGS);
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extern int ripng_interface_delete(ZAPI_CALLBACK_ARGS);
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extern int ripng_interface_address_add(ZAPI_CALLBACK_ARGS);
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extern int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS);
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extern int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS);
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extern void ripng_interface_sync(struct interface *ifp);
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extern struct ripng *ripng_lookup_by_vrf_id(vrf_id_t vrf_id);
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extern struct ripng *ripng_lookup_by_vrf_name(const char *vrf_name);
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extern struct ripng *ripng_create(const char *vrf_name, struct vrf *vrf,
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int socket);
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extern int ripng_make_socket(struct vrf *vrf);
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extern int ripng_network_write(struct vty *vty, struct ripng *ripng);
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extern struct ripng_info *ripng_ecmp_add(struct ripng *ripng,
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struct ripng_info *rinfo);
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extern struct ripng_info *ripng_ecmp_replace(struct ripng *ripng,
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struct ripng_info *rinfo);
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extern struct ripng_info *ripng_ecmp_delete(struct ripng *ripng,
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struct ripng_info *rinfo);
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extern void ripng_ecmp_change(struct ripng *ripng);
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extern void ripng_vrf_init(void);
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extern void ripng_vrf_terminate(void);
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extern void ripng_cli_init(void);
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#endif /* _ZEBRA_RIPNG_RIPNGD_H */
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