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/* $OpenBSD: eigrpe.h,v 1.18 2021/01/19 10:37:25 claudio Exp $ */
/*
* Copyright (c) 2015 Renato Westphal <renato@openbsd.org>
* Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _EIGRPE_H_
#define _EIGRPE_H_
#include <sys/queue.h>
#include <sys/tree.h>
#include <event.h>
struct pbuf {
struct ibuf *buf;
int refcnt;
};
struct packet {
TAILQ_ENTRY(packet) entry;
struct nbr *nbr;
uint32_t seq_num;
struct pbuf *pbuf;
struct event ev_timeout;
int attempts;
};
struct nbr {
RB_ENTRY(nbr) addr_tree, pid_tree;
TAILQ_ENTRY(nbr) entry;
struct event ev_ack;
struct event ev_hello_timeout;
struct eigrp_iface *ei;
union eigrpd_addr addr;
uint32_t peerid;
time_t uptime;
uint16_t hello_holdtime;
uint8_t flags;
#define F_EIGRP_NBR_SELF 0x01
#define F_EIGRP_NBR_PENDING 0x02
#define F_EIGRP_NBR_CR_MODE 0x04
struct rinfo_head update_list; /* unicast updates */
struct rinfo_head query_list; /* unicast queries */
struct rinfo_head reply_list; /* unicast replies */
/* RTP */
uint32_t recv_seq;
uint32_t next_mcast_seq;
TAILQ_HEAD(, packet) retrans_list;
};
RB_PROTOTYPE(nbr_addr_head, nbr, addr_tree, nbr_compare)
RB_PROTOTYPE(nbr_pid_head, nbr, pid_tree, nbr_pid_compare)
#define PREFIX_SIZE4(x) (((x - 1) / 8) + 1)
#define PREFIX_SIZE6(x) ((x == 128) ? 16 : ((x / 8) + 1))
extern struct eigrpd_conf *econf;
struct ctl_conn;
/* eigrpe.c */
void eigrpe(int, int, char *);
int eigrpe_imsg_compose_parent(int, pid_t, void *, uint16_t);
int eigrpe_imsg_compose_rde(int, uint32_t, pid_t, void *,
uint16_t);
void eigrpe_instance_init(struct eigrp *);
void eigrpe_instance_del(struct eigrp *);
void message_add(struct rinfo_head *, struct rinfo *);
void message_list_clr(struct rinfo_head *);
void seq_addr_list_clr(struct seq_addr_head *);
void eigrpe_orig_local_route(struct eigrp_iface *,
struct if_addr *, int);
void eigrpe_iface_ctl(struct ctl_conn *, unsigned int);
void eigrpe_nbr_ctl(struct ctl_conn *);
void eigrpe_stats_ctl(struct ctl_conn *);
/* interface.c */
struct iface *if_lookup(struct eigrpd_conf *, unsigned int);
void if_addr_new(struct iface *, struct kaddr *);
void if_addr_del(struct iface *, struct kaddr *);
in_addr_t if_primary_addr(struct iface *);
uint8_t if_primary_addr_prefixlen(struct iface *);
void if_update(struct iface *, int);
struct eigrp_iface *eigrp_if_new(struct eigrpd_conf *, struct eigrp *,
struct kif *);
void eigrp_if_del(struct eigrp_iface *);
struct eigrp_iface *eigrp_if_lookup(struct iface *, int, uint16_t);
struct eigrp_iface *eigrp_if_lookup_id(uint32_t);
struct ctl_iface *if_to_ctl(struct eigrp_iface *);
void if_set_sockbuf(int);
int if_set_ipv4_mcast_ttl(int, uint8_t);
int if_set_ipv4_mcast(struct iface *);
int if_set_ipv4_mcast_loop(int);
int if_set_ipv4_recvif(int, int);
int if_set_ipv4_hdrincl(int);
int if_set_ipv6_mcast(struct iface *);
int if_set_ipv6_mcast_loop(int);
int if_set_ipv6_pktinfo(int, int);
int if_set_ipv6_dscp(int, int);
/* neighbor.c */
struct nbr *nbr_new(struct eigrp_iface *, union eigrpd_addr *,
uint16_t, int);
void nbr_init(struct nbr *);
void nbr_del(struct nbr *);
struct nbr *nbr_find(struct eigrp_iface *, union eigrpd_addr *);
struct nbr *nbr_find_peerid(uint32_t);
struct ctl_nbr *nbr_to_ctl(struct nbr *);
void nbr_clear_ctl(struct ctl_nbr *);
void nbr_start_timeout(struct nbr *);
/* rtp.c */
void rtp_packet_del(struct packet *);
void rtp_process_ack(struct nbr *, uint32_t);
void rtp_send_ucast(struct nbr *, struct ibuf *);
void rtp_send(struct eigrp_iface *, struct nbr *, struct ibuf *);
void rtp_send_ack(struct nbr *);
void rtp_ack_timer(int, short, void *);
void rtp_ack_start_timer(struct nbr *);
void rtp_ack_stop_timer(struct nbr *);
/* packet.c */
int gen_eigrp_hdr(struct ibuf *, uint16_t, uint8_t, uint32_t,
uint16_t);
int send_packet(struct eigrp_iface *, struct nbr *, uint32_t,
struct ibuf *);
void recv_packet(int, short, void *);
/* tlv.c */
int gen_parameter_tlv(struct ibuf *, struct eigrp_iface *,
int);
int gen_sequence_tlv(struct ibuf *,
struct seq_addr_head *);
int gen_sw_version_tlv(struct ibuf *);
int gen_mcast_seq_tlv(struct ibuf *, uint32_t);
uint16_t len_route_tlv(struct rinfo *);
int gen_route_tlv(struct ibuf *, struct rinfo *);
struct tlv_parameter *tlv_decode_parameter(struct tlv *, char *);
int tlv_decode_seq(int, struct tlv *, char *,
struct seq_addr_head *);
struct tlv_sw_version *tlv_decode_sw_version(struct tlv *, char *);
struct tlv_mcast_seq *tlv_decode_mcast_seq(struct tlv *, char *);
int tlv_decode_route(int, struct tlv *, char *,
struct rinfo *);
void metric_encode_mtu(uint8_t *, int);
int metric_decode_mtu(uint8_t *);
/* hello.c */
void send_hello(struct eigrp_iface *, struct seq_addr_head *, uint32_t);
void send_peerterm(struct nbr *);
void recv_hello(struct eigrp_iface *, union eigrpd_addr *, struct nbr *,
struct tlv_parameter *);
/* update.c */
void send_update(struct eigrp_iface *, struct nbr *, uint32_t,
struct rinfo_head *);
void recv_update(struct nbr *, struct rinfo_head *, uint32_t);
/* query.c */
void send_query(struct eigrp_iface *, struct nbr *, struct rinfo_head *,
int);
void recv_query(struct nbr *, struct rinfo_head *, int);
/* reply.c */
void send_reply(struct nbr *, struct rinfo_head *, int);
void recv_reply(struct nbr *, struct rinfo_head *, int);
#endif /* _EIGRPE_H_ */
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