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/* $OpenBSD: ldpd.h,v 1.44 2015/03/21 18:32:01 renato Exp $ */
/*
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@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 _LDPD_H_
#define _LDPD_H_
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/tree.h>
#include <md5.h>
#include <net/if.h>
#include <netinet/in.h>
#include <event.h>
#include <imsg.h>
#include "ldp.h"
#define CONF_FILE "/etc/ldpd.conf"
#define LDPD_SOCKET "/var/run/ldpd.sock"
#define LDPD_USER "_ldpd"
#define NBR_IDSELF 1
#define NBR_CNTSTART (NBR_IDSELF + 1)
#define RT_BUF_SIZE 16384
#define MAX_RTSOCK_BUF 128 * 1024
#define LDP_BACKLOG 128
#define LDPD_FLAG_NO_FIB_UPDATE 0x0001
#define LDPD_FLAG_TH_ACCEPT 0x0002
#define F_LDPD_INSERTED 0x0001
#define F_CONNECTED 0x0002
#define F_STATIC 0x0004
#define F_DYNAMIC 0x0008
#define F_REJECT 0x0010
#define F_BLACKHOLE 0x0020
#define F_REDISTRIBUTED 0x0040
struct evbuf {
struct msgbuf wbuf;
struct event ev;
};
struct imsgev {
struct imsgbuf ibuf;
void (*handler)(int, short, void *);
struct event ev;
void *data;
short events;
};
enum imsg_type {
IMSG_NONE,
IMSG_CTL_RELOAD,
IMSG_CTL_SHOW_INTERFACE,
IMSG_CTL_SHOW_DISCOVERY,
IMSG_CTL_SHOW_NBR,
IMSG_CTL_SHOW_LIB,
IMSG_CTL_FIB_COUPLE,
IMSG_CTL_FIB_DECOUPLE,
IMSG_CTL_KROUTE,
IMSG_CTL_KROUTE_ADDR,
IMSG_CTL_IFINFO,
IMSG_CTL_END,
IMSG_CTL_LOG_VERBOSE,
IMSG_KLABEL_CHANGE,
IMSG_KLABEL_DELETE,
IMSG_IFSTATUS,
IMSG_NEWADDR,
IMSG_DELADDR,
IMSG_LABEL_MAPPING,
IMSG_LABEL_MAPPING_FULL,
IMSG_LABEL_REQUEST,
IMSG_LABEL_RELEASE,
IMSG_LABEL_WITHDRAW,
IMSG_LABEL_ABORT,
IMSG_REQUEST_ADD,
IMSG_REQUEST_ADD_END,
IMSG_MAPPING_ADD,
IMSG_MAPPING_ADD_END,
IMSG_RELEASE_ADD,
IMSG_RELEASE_ADD_END,
IMSG_ADDRESS_ADD,
IMSG_ADDRESS_DEL,
IMSG_NOTIFICATION_SEND,
IMSG_NEIGHBOR_UP,
IMSG_NEIGHBOR_DOWN,
IMSG_NETWORK_ADD,
IMSG_NETWORK_DEL,
IMSG_RECONF_CONF,
IMSG_RECONF_IFACE,
IMSG_RECONF_END
};
/* interface states */
#define IF_STA_NEW 0x00 /* dummy state for reload */
#define IF_STA_DOWN 0x01
#define IF_STA_ACTIVE 0x02
/* interface types */
enum iface_type {
IF_TYPE_POINTOPOINT,
IF_TYPE_BROADCAST
};
/* neighbor states */
#define NBR_STA_PRESENT 0x0001
#define NBR_STA_INITIAL 0x0002
#define NBR_STA_OPENREC 0x0004
#define NBR_STA_OPENSENT 0x0008
#define NBR_STA_OPER 0x0010
#define NBR_STA_SESSION (NBR_STA_INITIAL | NBR_STA_OPENREC | \
NBR_STA_OPENSENT | NBR_STA_OPER)
/* neighbor events */
enum nbr_event {
NBR_EVT_NOTHING,
NBR_EVT_MATCH_ADJ,
NBR_EVT_CONNECT_UP,
NBR_EVT_CLOSE_SESSION,
NBR_EVT_INIT_RCVD,
NBR_EVT_KEEPALIVE_RCVD,
NBR_EVT_PDU_RCVD,
NBR_EVT_PDU_SENT,
NBR_EVT_INIT_SENT,
};
/* neighbor actions */
enum nbr_action {
NBR_ACT_NOTHING,
NBR_ACT_RST_KTIMEOUT,
NBR_ACT_SESSION_EST,
NBR_ACT_RST_KTIMER,
NBR_ACT_CONNECT_SETUP,
NBR_ACT_PASSIVE_INIT,
NBR_ACT_KEEPALIVE_SEND,
NBR_ACT_CLOSE_SESSION
};
TAILQ_HEAD(mapping_head, mapping_entry);
struct map {
struct in_addr prefix;
u_int32_t label;
u_int32_t messageid;
u_int32_t requestid;
u_int8_t prefixlen;
u_int8_t flags;
};
#define F_MAP_WILDCARD 0x01 /* wildcard FEC */
#define F_MAP_OPTLABEL 0x02 /* optional label present */
#define F_MAP_REQ_ID 0x04 /* optional request message id present */
struct notify_msg {
u_int32_t messageid;
u_int32_t status;
u_int32_t type;
};
struct if_addr {
LIST_ENTRY(if_addr) global_entry;
LIST_ENTRY(if_addr) iface_entry;
struct in_addr addr;
struct in_addr mask;
struct in_addr dstbrd;
};
struct iface {
LIST_ENTRY(iface) entry;
struct event hello_timer;
char name[IF_NAMESIZE];
LIST_HEAD(, if_addr) addr_list;
LIST_HEAD(, adj) adj_list;
time_t uptime;
unsigned int ifindex;
int discovery_fd;
int state;
u_int16_t hello_holdtime;
u_int16_t hello_interval;
u_int16_t flags;
enum iface_type type;
u_int8_t media_type;
u_int8_t linkstate;
};
/* source of targeted hellos */
struct tnbr {
LIST_ENTRY(tnbr) entry;
struct event hello_timer;
int discovery_fd;
struct adj *adj;
struct in_addr addr;
u_int16_t hello_holdtime;
u_int16_t hello_interval;
u_int8_t flags;
};
#define F_TNBR_CONFIGURED 0x01
/* ldp_conf */
enum {
PROC_MAIN,
PROC_LDP_ENGINE,
PROC_LDE_ENGINE
} ldpd_process;
enum hello_type {
HELLO_LINK,
HELLO_TARGETED
};
#define MODE_DIST_INDEPENDENT 0x01
#define MODE_DIST_ORDERED 0x02
#define MODE_RET_LIBERAL 0x04
#define MODE_RET_CONSERVATIVE 0x08
#define MODE_ADV_ONDEMAND 0x10
#define MODE_ADV_UNSOLICITED 0x20
struct ldpd_conf {
struct event disc_ev;
struct event edisc_ev;
struct in_addr rtr_id;
LIST_HEAD(, iface) iface_list;
LIST_HEAD(, if_addr) addr_list;
LIST_HEAD(, tnbr) tnbr_list;
u_int32_t opts;
#define LDPD_OPT_VERBOSE 0x00000001
#define LDPD_OPT_VERBOSE2 0x00000002
#define LDPD_OPT_NOACTION 0x00000004
time_t uptime;
int ldp_discovery_socket;
int ldp_ediscovery_socket;
int ldp_session_socket;
int flags;
u_int8_t mode;
u_int16_t keepalive;
u_int16_t thello_holdtime;
u_int16_t thello_interval;
};
/* kroute */
struct kroute {
struct in_addr prefix;
struct in_addr nexthop;
u_int32_t local_label;
u_int32_t remote_label;
u_int16_t flags;
u_short ifindex;
u_int8_t prefixlen;
u_int8_t priority;
};
struct kaddr {
u_short ifindex;
struct in_addr addr;
struct in_addr mask;
struct in_addr dstbrd;
};
struct kif {
char ifname[IF_NAMESIZE];
u_int64_t baudrate;
int flags;
int mtu;
u_short ifindex;
u_int8_t media_type;
u_int8_t link_state;
};
/* control data structures */
struct ctl_iface {
char name[IF_NAMESIZE];
time_t uptime;
unsigned int ifindex;
int state;
u_int16_t adj_cnt;
u_int16_t flags;
u_int16_t hello_holdtime;
u_int16_t hello_interval;
enum iface_type type;
u_int8_t linkstate;
u_int8_t mediatype;
};
struct ctl_adj {
struct in_addr id;
enum hello_type type;
char ifname[IF_NAMESIZE];
struct in_addr src_addr;
u_int16_t holdtime;
};
struct ctl_nbr {
struct in_addr id;
struct in_addr addr;
time_t uptime;
int nbr_state;
};
struct ctl_rt {
struct in_addr prefix;
struct in_addr nexthop;
struct in_addr adv_rtr;
time_t uptime;
u_int32_t local_label;
u_int32_t remote_label;
u_int8_t flags;
u_int8_t prefixlen;
u_int8_t connected;
u_int8_t in_use;
};
/* parse.y */
struct ldpd_conf *parse_config(char *, int);
int cmdline_symset(char *);
/* kroute.c */
int kif_init(void);
void kif_redistribute(void);
int kr_init(int);
int kr_change(struct kroute *);
int kr_delete(struct kroute *);
void kr_shutdown(void);
void kr_fib_couple(void);
void kr_fib_decouple(void);
void kr_dispatch_msg(int, short, void *);
void kr_show_route(struct imsg *);
void kr_ifinfo(char *, pid_t);
struct kif *kif_findname(char *);
void kr_reload(void);
u_int8_t mask2prefixlen(in_addr_t);
in_addr_t prefixlen2mask(u_int8_t);
/* log.h */
const char *nbr_state_name(int);
const char *if_state_name(int);
const char *if_type_name(enum iface_type);
const char *notification_name(u_int32_t);
/* ldpd.c */
void main_imsg_compose_ldpe(int, pid_t, void *, u_int16_t);
void main_imsg_compose_lde(int, pid_t, void *, u_int16_t);
void merge_config(struct ldpd_conf *, struct ldpd_conf *);
int imsg_compose_event(struct imsgev *, u_int16_t, u_int32_t, pid_t,
int, void *, u_int16_t);
void imsg_event_add(struct imsgev *);
void evbuf_enqueue(struct evbuf *, struct ibuf *);
void evbuf_event_add(struct evbuf *);
void evbuf_init(struct evbuf *, int, void (*)(int, short, void *), void *);
void evbuf_clear(struct evbuf *);
/* printconf.c */
void print_config(struct ldpd_conf *);
#endif /* _LDPD_H_ */
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