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/* BGP message definition header.
Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
This file is part of GNU Zebra.
GNU Zebra is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
GNU Zebra is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Zebra; see the file COPYING. If not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#ifndef _QUAGGA_BGPD_H
#define _QUAGGA_BGPD_H
#include "stdbool.h"
#include "bgpd/bgp_common.h"
#include "bgpd/bgp_notification.h"
#include "bgpd/bgp_peer.h"
#include "plist.h"
/* For union sockunion. */
#include "sockunion.h"
/* BGP master for system wide configurations and variables. */
struct bgp_master
{
/* BGP instance list. */
struct list *bgp;
/* BGP thread master. */
struct thread_master *master;
/* Listener address & port number */
char *address;
u_int16_t port;
/* BGP start time. */
time_t start_time;
/* Various BGP global configuration. */
u_char options;
#define BGP_OPT_NO_FIB (1 << 0)
#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
#define BGP_OPT_CONFIG_CISCO (1 << 2)
/* Do not announce AS4 */
bool as2_speaker ;
/* Peers lingering in pDeleting */
unsigned peer_linger_count ;
};
/* BGP instance structure. */
struct bgp
{
/* AS number of this BGP instance. */
as_t as;
/* Name of this BGP instance. */
char *name;
/* Reference count to allow bgp_peer_delete to finish after bgp_delete */
int lock;
/* Self peer. */
struct peer *peer_self;
/* BGP peer. */
struct list *peer;
/* BGP peer group. */
struct list *group;
/* BGP route-server-clients. */
struct list *rsclient;
/* work queues */
struct work_queue *process_main_queue;
struct work_queue *process_rsclient_queue;
/* BGP configuration. */
u_int16_t config;
#define BGP_CONFIG_ROUTER_ID (1 << 0)
#define BGP_CONFIG_CLUSTER_ID (1 << 1)
#define BGP_CONFIG_CONFEDERATION (1 << 2)
/* BGP router identifier. */
struct in_addr router_id;
struct in_addr router_id_static;
/* BGP route reflector cluster ID. */
struct in_addr cluster_id;
/* BGP confederation information. */
as_t confed_id;
as_t *confed_peers;
int confed_peers_cnt;
/* BGP flags. */
u_int16_t flags;
#define BGP_FLAG_ALWAYS_COMPARE_MED (1 << 0)
#define BGP_FLAG_DETERMINISTIC_MED (1 << 1)
#define BGP_FLAG_MED_MISSING_AS_WORST (1 << 2)
#define BGP_FLAG_MED_CONFED (1 << 3)
#define BGP_FLAG_NO_DEFAULT_IPV4 (1 << 4)
#define BGP_FLAG_NO_CLIENT_TO_CLIENT (1 << 5)
#define BGP_FLAG_ENFORCE_FIRST_AS (1 << 6)
#define BGP_FLAG_COMPARE_ROUTER_ID (1 << 7)
#define BGP_FLAG_ASPATH_IGNORE (1 << 8)
#define BGP_FLAG_IMPORT_CHECK (1 << 9)
#define BGP_FLAG_NO_FAST_EXT_FAILOVER (1 << 10)
#define BGP_FLAG_LOG_NEIGHBOR_CHANGES (1 << 11)
#define BGP_FLAG_GRACEFUL_RESTART (1 << 12)
#define BGP_FLAG_ASPATH_CONFED (1 << 13)
/* BGP Per AF flags */
u_int16_t af_flags[AFI_MAX][SAFI_MAX];
#define BGP_CONFIG_DAMPENING (1 << 0)
/* Static route configuration. */
struct bgp_table *route[AFI_MAX][SAFI_MAX];
/* Aggregate address configuration. */
struct bgp_table *aggregate[AFI_MAX][SAFI_MAX];
/* BGP routing information base. */
struct bgp_table *rib[AFI_MAX][SAFI_MAX];
/* BGP redistribute configuration. */
u_char redist[AFI_MAX][ZEBRA_ROUTE_MAX];
/* BGP redistribute metric configuration. */
u_char redist_metric_flag[AFI_MAX][ZEBRA_ROUTE_MAX];
u_int32_t redist_metric[AFI_MAX][ZEBRA_ROUTE_MAX];
/* BGP redistribute route-map. */
struct
{
char *name;
struct route_map *map;
} rmap[AFI_MAX][ZEBRA_ROUTE_MAX];
/* BGP distance configuration. */
u_char distance_ebgp;
u_char distance_ibgp;
u_char distance_local;
/* BGP default local-preference. */
u_int32_t default_local_pref;
/* BGP default timer. */
u_int32_t default_holdtime;
u_int32_t default_keepalive;
/* BGP graceful restart */
u_int32_t restart_time;
u_int32_t stalepath_time;
};
/* BGP peer-group support. */
struct peer_group
{
/* Name of the peer-group. */
char *name;
/* Pointer to BGP. */
struct bgp *bgp;
/* Peer-group client list. */
struct list *peer;
/* Peer-group config */
struct peer *conf;
};
/* BGP router distinguisher value. */
#define BGP_RD_SIZE 8
struct bgp_rd
{
u_char val[BGP_RD_SIZE];
};
#define PEER_PASSWORD_MINLEN (1)
#define PEER_PASSWORD_MAXLEN (80)
/* This structure's member directly points incoming packet data
stream. */
struct bgp_nlri
{
/* AFI. */
afi_t afi;
/* SAFI. */
safi_t safi;
/* Pointer to NLRI byte stream. */
u_char *nlri;
/* Length of whole NLRI. */
bgp_size_t length;
};
/* BGP versions. */
#define BGP_VERSION_4 4
/* Default BGP port number. */
#define BGP_PORT_DEFAULT 179
/* BGP message header and packet size. */
#define BGP_MARKER_SIZE 16
#define BGP_HEADER_SIZE 19
#define BGP_MAX_PACKET_SIZE 4096
/* BGP minimum message size. */
#define BGP_MSG_OPEN_MIN_SIZE (BGP_HEADER_SIZE + 10)
#define BGP_MSG_UPDATE_MIN_SIZE (BGP_HEADER_SIZE + 4)
#define BGP_MSG_NOTIFY_MIN_SIZE (BGP_HEADER_SIZE + 2)
#define BGP_MSG_KEEPALIVE_MIN_SIZE (BGP_HEADER_SIZE + 0)
#define BGP_MSG_ROUTE_REFRESH_MIN_SIZE (BGP_HEADER_SIZE + 4)
#define BGP_MSG_CAPABILITY_MIN_SIZE (BGP_HEADER_SIZE + 3)
/* BGP message types. */
#define BGP_MSG_OPEN 1
#define BGP_MSG_UPDATE 2
#define BGP_MSG_NOTIFY 3
#define BGP_MSG_KEEPALIVE 4
#define BGP_MSG_ROUTE_REFRESH_NEW 5
#define BGP_MSG_CAPABILITY 6
#define BGP_MSG_ROUTE_REFRESH_OLD 128
/* BGP open optional parameter. */
#define BGP_OPEN_OPT_AUTH 1
#define BGP_OPEN_OPT_CAP 2
/* BGP4 attribute type codes. */
#define BGP_ATTR_ORIGIN 1
#define BGP_ATTR_AS_PATH 2
#define BGP_ATTR_NEXT_HOP 3
#define BGP_ATTR_MULTI_EXIT_DISC 4
#define BGP_ATTR_LOCAL_PREF 5
#define BGP_ATTR_ATOMIC_AGGREGATE 6
#define BGP_ATTR_AGGREGATOR 7
#define BGP_ATTR_COMMUNITIES 8
#define BGP_ATTR_ORIGINATOR_ID 9
#define BGP_ATTR_CLUSTER_LIST 10
#define BGP_ATTR_DPA 11
#define BGP_ATTR_ADVERTISER 12
#define BGP_ATTR_RCID_PATH 13
#define BGP_ATTR_MP_REACH_NLRI 14
#define BGP_ATTR_MP_UNREACH_NLRI 15
#define BGP_ATTR_EXT_COMMUNITIES 16
#define BGP_ATTR_AS4_PATH 17
#define BGP_ATTR_AS4_AGGREGATOR 18
#define BGP_ATTR_AS_PATHLIMIT 21
/* BGP update origin. */
#define BGP_ORIGIN_IGP 0
#define BGP_ORIGIN_EGP 1
#define BGP_ORIGIN_INCOMPLETE 2
/* BGP finite state machine status. */
/* Obsolete
#define Idle 1
#define Connect 2
#define Active 3
#define OpenSent 4
#define OpenConfirm 5
#define Established 6
#define Clearing 7
#define Deleted 8
#define BGP_STATUS_MAX 9
*/
/* BGP finite state machine events. */
#define BGP_Start 1
#define BGP_Stop 2
#define TCP_connection_open 3
#define TCP_connection_closed 4
#define TCP_connection_open_failed 5
#define TCP_fatal_error 6
#define ConnectRetry_timer_expired 7
#define Hold_Timer_expired 8
#define KeepAlive_timer_expired 9
#define Receive_OPEN_message 10
#define Receive_KEEPALIVE_message 11
#define Receive_UPDATE_message 12
#define Receive_NOTIFICATION_message 13
#define Clearing_Completed 14
#define BGP_EVENTS_MAX 15
/* BGP timers default value. */
#define BGP_INIT_START_TIMER 5
#define BGP_ERROR_START_TIMER 30
#define BGP_DEFAULT_HOLDTIME 180
#define BGP_DEFAULT_KEEPALIVE 60
#define BGP_DEFAULT_ASORIGINATE 15
#define BGP_DEFAULT_EBGP_ROUTEADV 30
#define BGP_DEFAULT_IBGP_ROUTEADV 5
#define BGP_CLEAR_CONNECT_RETRY 20
#define BGP_DEFAULT_CONNECT_RETRY 120
/* BGP default local preference. */
#define BGP_DEFAULT_LOCAL_PREF 100
/* BGP graceful restart */
#define BGP_DEFAULT_RESTART_TIME 120
#define BGP_DEFAULT_STALEPATH_TIME 360
/* SAFI which used in open capability negotiation. */
#define BGP_SAFI_VPNV4 128
#define BGP_SAFI_VPNV6 129
/* Max TTL value. */
#define TTL_MAX 255
/* BGP uptime string length. */
#define BGP_UPTIME_LEN 25
/* Default configuration settings for bgpd. */
#define BGP_VTY_PORT 2605
#define BGP_DEFAULT_CONFIG "bgpd.conf"
/* Check AS path loop when we send NLRI. */
/* #define BGP_SEND_ASPATH_CHECK */
/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
a peer who's AS is part of our Confederation. */
enum
{
BGP_PEER_IBGP,
BGP_PEER_EBGP,
BGP_PEER_INTERNAL,
BGP_PEER_CONFED
};
/* Flag for peer_clear_soft(). */
enum bgp_clear_type
{
BGP_CLEAR_SOFT_NONE,
BGP_CLEAR_SOFT_OUT,
BGP_CLEAR_SOFT_IN,
BGP_CLEAR_SOFT_BOTH,
BGP_CLEAR_SOFT_IN_ORF_PREFIX,
BGP_CLEAR_SOFT_RSCLIENT
};
/* Macros. */
#define BGP_INPUT(P) ((P)->ibuf)
#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
/* Count prefix size from mask length */
#define PSIZE(a) (((a) + 7) / (8))
/* BGP error codes. */
#define BGP_SUCCESS 0
#define BGP_ERR_INVALID_VALUE -1
#define BGP_ERR_INVALID_FLAG -2
#define BGP_ERR_INVALID_AS -3
#define BGP_ERR_INVALID_BGP -4
#define BGP_ERR_PEER_GROUP_MEMBER -5
#define BGP_ERR_MULTIPLE_INSTANCE_USED -6
#define BGP_ERR_PEER_GROUP_MEMBER_EXISTS -7
#define BGP_ERR_PEER_BELONGS_TO_GROUP -8
#define BGP_ERR_PEER_GROUP_AF_UNCONFIGURED -9
#define BGP_ERR_PEER_GROUP_NO_REMOTE_AS -10
#define BGP_ERR_PEER_GROUP_CANT_CHANGE -11
#define BGP_ERR_PEER_GROUP_MISMATCH -12
#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -13
#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -14
#define BGP_ERR_AS_MISMATCH -15
#define BGP_ERR_PEER_INACTIVE -16
#define BGP_ERR_INVALID_FOR_PEER_GROUP_MEMBER -17
#define BGP_ERR_PEER_GROUP_HAS_THE_FLAG -18
#define BGP_ERR_PEER_FLAG_CONFLICT -19
#define BGP_ERR_PEER_GROUP_SHUTDOWN -20
#define BGP_ERR_PEER_FILTER_CONFLICT -21
#define BGP_ERR_NOT_INTERNAL_PEER -22
#define BGP_ERR_REMOVE_PRIVATE_AS -23
#define BGP_ERR_AF_UNCONFIGURED -24
#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -25
#define BGP_ERR_INSTANCE_MISMATCH -26
#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -27
#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -28
#define BGP_ERR_TCPSIG_FAILED -29
#define BGP_ERR_PEER_EXISTS -30
#define BGP_ERR_MAX -31
extern struct bgp_master *bm;
extern struct thread_master *master;
extern qpn_nexus cli_nexus;
extern qpn_nexus bgp_nexus;
extern qpn_nexus routing_nexus;
/* Prototypes. */
extern void bgp_terminate (int, int);
extern void bgp_reset (void);
extern void bgp_zclient_reset (void); /* See bgp_zebra ! */
extern int bgp_nexthop_set (union sockunion *, union sockunion *,
struct bgp_nexthop *, struct peer *); /* See bgp_zebra ! */
extern struct bgp *bgp_get_default (void);
extern struct bgp *bgp_lookup (as_t, const char *);
extern struct bgp *bgp_lookup_by_name (const char *);
extern struct peer *peer_lookup (struct bgp *, union sockunion *);
extern struct peer_group *peer_group_lookup (struct bgp *, const char *);
extern struct peer_group *peer_group_get (struct bgp *, const char *);
extern struct peer *peer_lookup_with_open (union sockunion *, as_t, struct in_addr *,
int *);
extern int peer_sort (struct peer *peer);
extern int peer_active (struct peer *);
extern int peer_active_nego (struct peer *);
extern struct peer *peer_create_accept (struct bgp *);
extern char *peer_uptime (time_t, char *, size_t);
extern int bgp_config_write (struct vty *);
extern void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
extern void bgp_master_init (void);
extern void bgp_init (void);
extern void bgp_route_map_init (void);
extern int bgp_option_set (int);
extern int bgp_option_unset (int);
extern int bgp_option_check (int);
extern int bgp_get (struct bgp **, as_t *, const char *);
extern int bgp_delete (struct bgp *);
extern int bgp_flag_set (struct bgp *, int);
extern int bgp_flag_unset (struct bgp *, int);
extern int bgp_flag_check (struct bgp *, int);
extern void bgp_lock (struct bgp *);
extern void bgp_unlock (struct bgp *);
extern int bgp_router_id_set (struct bgp *, struct in_addr *);
extern int bgp_cluster_id_set (struct bgp *, struct in_addr *);
extern int bgp_cluster_id_unset (struct bgp *);
extern int bgp_confederation_id_set (struct bgp *, as_t);
extern int bgp_confederation_id_unset (struct bgp *);
extern int bgp_confederation_peers_check (struct bgp *, as_t);
extern int bgp_confederation_peers_add (struct bgp *, as_t);
extern int bgp_confederation_peers_remove (struct bgp *, as_t);
extern int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
extern int bgp_timers_unset (struct bgp *);
extern int bgp_default_local_preference_set (struct bgp *, u_int32_t);
extern int bgp_default_local_preference_unset (struct bgp *);
extern int peer_rsclient_active (struct peer *);
extern int peer_remote_as (struct bgp *, union sockunion *, as_t *, afi_t, safi_t);
extern int peer_group_remote_as (struct bgp *, const char *, as_t *);
extern int peer_group_delete (struct peer_group *);
extern int peer_group_remote_as_delete (struct peer_group *);
extern int peer_activate (struct peer *, afi_t, safi_t);
extern int peer_deactivate (struct peer *, afi_t, safi_t);
extern void peer_rsclient_unset(struct peer* peer, int afi, int safi,
bool keep_export) ;
extern int peer_group_bind (struct bgp *, union sockunion *, struct peer_group *,
afi_t, safi_t, as_t *);
extern int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
afi_t, safi_t);
extern int peer_flag_set (struct peer *, u_int32_t);
extern int peer_flag_unset (struct peer *, u_int32_t);
extern int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
extern int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
extern int peer_af_flag_modify (struct peer *, afi_t, safi_t, u_int32_t,
bool set) ;
extern int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
extern int peer_ebgp_multihop_set (struct peer *, int);
extern int peer_ebgp_multihop_unset (struct peer *);
extern int peer_description_set (struct peer *, char *);
extern int peer_description_unset (struct peer *);
extern int peer_update_source_if_set (struct peer *, const char *);
extern int peer_update_source_addr_set (struct peer *, union sockunion *);
extern int peer_update_source_unset (struct peer *);
extern int peer_default_originate_set (struct peer *, afi_t, safi_t, const char *);
extern int peer_default_originate_unset (struct peer *, afi_t, safi_t);
extern int peer_port_set (struct peer *, u_int16_t);
extern int peer_port_unset (struct peer *);
extern int peer_weight_set (struct peer *, u_int16_t);
extern int peer_weight_unset (struct peer *);
extern int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
extern int peer_timers_unset (struct peer *);
extern int peer_timers_connect_set (struct peer *, u_int32_t);
extern int peer_timers_connect_unset (struct peer *);
extern int peer_advertise_interval_set (struct peer *, u_int32_t);
extern int peer_advertise_interval_unset (struct peer *);
extern int peer_interface_set (struct peer *, const char *);
extern int peer_interface_unset (struct peer *);
extern int peer_distribute_set (struct peer *, afi_t, safi_t, int, const char *);
extern int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
extern int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
extern int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
extern int peer_local_as_set (struct peer *, as_t, int);
extern int peer_local_as_unset (struct peer *);
extern int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, const char *);
extern int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
extern int peer_aslist_set (struct peer *, afi_t, safi_t, int, const char *);
extern int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
extern int peer_route_map_set (struct peer *, afi_t, safi_t, int, const char *);
extern int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
extern int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, const char *);
extern int peer_password_set (struct peer *, const char *);
extern int peer_password_unset (struct peer *);
extern int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
extern int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, u_char, int, u_int16_t);
extern int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
extern int peer_clear (struct peer *);
extern int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);
extern void program_terminate_if_all_disabled(void);
#endif /* _QUAGGA_BGPD_H */
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