Initial revision
diff --git a/bgpd/bgpd.h b/bgpd/bgpd.h
new file mode 100644
index 0000000..01d4721
--- /dev/null
+++ b/bgpd/bgpd.h
@@ -0,0 +1,824 @@
+/* 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. */
+
+/* For union sockunion. */
+#include "sockunion.h"
+
+/* Typedef BGP specific types. */
+typedef u_int16_t as_t;
+typedef u_int16_t bgp_size_t;
+
+/* BGP master for system wide configurations and variables. */
+struct bgp_master
+{
+ /* BGP instance list. */
+ struct list *bgp;
+
+ /* BGP thread master. */
+ struct thread_master *master;
+
+ /* BGP port number. */
+ 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)
+};
+
+/* BGP instance structure. */
+struct bgp
+{
+ /* AS number of this BGP instance. */
+ as_t as;
+
+ /* Name of this BGP instance. */
+ char *name;
+
+ /* Self peer. */
+ struct peer *peer_self;
+
+ /* BGP peer. */
+ struct list *peer;
+
+ /* BGP peer group. */
+ struct list *group;
+
+ /* 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)
+#define BGP_CONFIG_DEFAULT_LOCAL_PREF (1 << 3)
+
+ /* BGP router identifier. */
+ struct in_addr router_id;
+
+ /* 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)
+
+ /* 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 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 Notify message format. */
+struct bgp_notify
+{
+ u_char code;
+ u_char subcode;
+ char *data;
+ bgp_size_t length;
+};
+
+/* Next hop self address. */
+struct bgp_nexthop
+{
+ struct interface *ifp;
+ struct in_addr v4;
+#ifdef HAVE_IPV6
+ struct in6_addr v6_global;
+ struct in6_addr v6_local;
+#endif /* HAVE_IPV6 */
+};
+
+/* BGP router distinguisher value. */
+#define BGP_RD_SIZE 8
+
+struct bgp_rd
+{
+ u_char val[BGP_RD_SIZE];
+};
+
+/* BGP filter structure. */
+struct bgp_filter
+{
+ /* Distribute-list. */
+ struct
+ {
+ char *name;
+ struct access_list *alist;
+ } dlist[FILTER_MAX];
+
+ /* Prefix-list. */
+ struct
+ {
+ char *name;
+ struct prefix_list *plist;
+ } plist[FILTER_MAX];
+
+ /* Filter-list. */
+ struct
+ {
+ char *name;
+ struct as_list *aslist;
+ } aslist[FILTER_MAX];
+
+ /* Route-map. */
+ struct
+ {
+ char *name;
+ struct route_map *map;
+ } map[FILTER_MAX];
+
+ /* Unsuppress-map. */
+ struct
+ {
+ char *name;
+ struct route_map *map;
+ } usmap;
+};
+
+/* BGP neighbor structure. */
+struct peer
+{
+ /* BGP structure. */
+ struct bgp *bgp;
+
+ /* BGP peer group. */
+ struct peer_group *group;
+ u_char af_group[AFI_MAX][SAFI_MAX];
+
+ /* Peer's remote AS number. */
+ as_t as;
+
+ /* Peer's local AS number. */
+ as_t local_as;
+
+ /* Peer's Change local AS number. */
+ as_t change_local_as;
+
+ /* Remote router ID. */
+ struct in_addr remote_id;
+
+ /* Local router ID. */
+ struct in_addr local_id;
+
+ /* Packet receive and send buffer. */
+ struct stream *ibuf;
+ struct stream_fifo *obuf;
+ struct stream *work;
+
+ /* Status of the peer. */
+ int status;
+ int ostatus;
+
+ /* Peer information */
+ int fd; /* File descriptor */
+ int ttl; /* TTL of TCP connection to the peer. */
+ char *desc; /* Description of the peer. */
+ unsigned short port; /* Destination port for peer */
+ char *host; /* Printable address of the peer. */
+ union sockunion su; /* Sockunion address of the peer. */
+ time_t uptime; /* Last Up/Down time */
+ time_t readtime; /* Last read time */
+
+ unsigned int ifindex; /* ifindex of the BGP connection. */
+ char *ifname; /* bind interface name. */
+ char *update_if;
+ union sockunion *update_source;
+ struct zlog *log;
+ u_char version; /* Peer BGP version. */
+
+ union sockunion *su_local; /* Sockunion of local address. */
+ union sockunion *su_remote; /* Sockunion of remote address. */
+ int shared_network; /* Is this peer shared same network. */
+ struct bgp_nexthop nexthop; /* Nexthop */
+
+ /* Peer address family configuration. */
+ u_char afc[AFI_MAX][SAFI_MAX];
+ u_char afc_nego[AFI_MAX][SAFI_MAX];
+ u_char afc_adv[AFI_MAX][SAFI_MAX];
+ u_char afc_recv[AFI_MAX][SAFI_MAX];
+
+ /* Capability Flags.*/
+ u_char cap;
+#define PEER_CAP_REFRESH_ADV (1 << 0) /* refresh advertised */
+#define PEER_CAP_REFRESH_OLD_RCV (1 << 1) /* refresh old received */
+#define PEER_CAP_REFRESH_NEW_RCV (1 << 2) /* refresh rfc received */
+#define PEER_CAP_DYNAMIC_ADV (1 << 3) /* dynamic advertised */
+#define PEER_CAP_DYNAMIC_RCV (1 << 4) /* dynamic received */
+
+ /* Capability Flags.*/
+ u_int16_t af_cap[AFI_MAX][SAFI_MAX];
+#define PEER_CAP_ORF_PREFIX_SM_ADV (1 << 0) /* send-mode advertised */
+#define PEER_CAP_ORF_PREFIX_RM_ADV (1 << 1) /* receive-mode advertised */
+#define PEER_CAP_ORF_PREFIX_SM_RCV (1 << 2) /* send-mode received */
+#define PEER_CAP_ORF_PREFIX_RM_RCV (1 << 3) /* receive-mode received */
+#define PEER_CAP_ORF_PREFIX_SM_OLD_RCV (1 << 4) /* send-mode received */
+#define PEER_CAP_ORF_PREFIX_RM_OLD_RCV (1 << 5) /* receive-mode received */
+
+ /* Global configuration flags. */
+ u_int32_t flags;
+#define PEER_FLAG_PASSIVE (1 << 0) /* passive mode */
+#define PEER_FLAG_SHUTDOWN (1 << 1) /* shutdown */
+#define PEER_FLAG_DONT_CAPABILITY (1 << 2) /* dont-capability */
+#define PEER_FLAG_OVERRIDE_CAPABILITY (1 << 3) /* override-capability */
+#define PEER_FLAG_STRICT_CAP_MATCH (1 << 4) /* strict-match */
+#define PEER_FLAG_NO_ROUTE_REFRESH_CAP (1 << 5) /* route-refresh */
+#define PEER_FLAG_DYNAMIC_CAPABILITY (1 << 6) /* dynamic capability */
+#define PEER_FLAG_ENFORCE_MULTIHOP (1 << 7) /* enforce-multihop */
+#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 8) /* local-as no-prepend */
+
+ /* Per AF configuration flags. */
+ u_int32_t af_flags[AFI_MAX][SAFI_MAX];
+#define PEER_FLAG_SEND_COMMUNITY (1 << 0) /* send-community */
+#define PEER_FLAG_SEND_EXT_COMMUNITY (1 << 1) /* send-community ext. */
+#define PEER_FLAG_NEXTHOP_SELF (1 << 2) /* next-hop-self */
+#define PEER_FLAG_REFLECTOR_CLIENT (1 << 3) /* reflector-client */
+#define PEER_FLAG_RSERVER_CLIENT (1 << 4) /* route-server-client */
+#define PEER_FLAG_SOFT_RECONFIG (1 << 5) /* soft-reconfiguration */
+#define PEER_FLAG_AS_PATH_UNCHANGED (1 << 6) /* transparent-as */
+#define PEER_FLAG_NEXTHOP_UNCHANGED (1 << 7) /* transparent-next-hop */
+#define PEER_FLAG_MED_UNCHANGED (1 << 8) /* transparent-next-hop */
+#define PEER_FLAG_DEFAULT_ORIGINATE (1 << 9) /* default-originate */
+#define PEER_FLAG_REMOVE_PRIVATE_AS (1 << 10) /* remove-private-as */
+#define PEER_FLAG_ALLOWAS_IN (1 << 11) /* set allowas-in */
+#define PEER_FLAG_ORF_PREFIX_SM (1 << 12) /* orf capability send-mode */
+#define PEER_FLAG_ORF_PREFIX_RM (1 << 13) /* orf capability receive-mode */
+#define PEER_FLAG_MAX_PREFIX (1 << 14) /* maximum prefix */
+#define PEER_FLAG_MAX_PREFIX_WARNING (1 << 15) /* maximum prefix warning-only */
+
+ /* default-originate route-map. */
+ struct
+ {
+ char *name;
+ struct route_map *map;
+ } default_rmap[AFI_MAX][SAFI_MAX];
+
+ /* Peer status flags. */
+ u_int16_t sflags;
+#define PEER_STATUS_ACCEPT_PEER (1 << 0) /* accept peer */
+#define PEER_STATUS_PREFIX_OVERFLOW (1 << 1) /* prefix-overflow */
+#define PEER_STATUS_CAPABILITY_OPEN (1 << 2) /* capability open send */
+#define PEER_STATUS_HAVE_ACCEPT (1 << 3) /* accept peer's parent */
+#define PEER_STATUS_GROUP (1 << 4) /* peer-group conf */
+
+ /* Peer status af flags. */
+ u_int16_t af_sflags[AFI_MAX][SAFI_MAX];
+#define PEER_STATUS_ORF_PREFIX_SEND (1 << 0) /* prefix-list send peer */
+#define PEER_STATUS_ORF_WAIT_REFRESH (1 << 1) /* wait refresh received peer */
+#define PEER_STATUS_DEFAULT_ORIGINATE (1 << 2) /* default-originate peer */
+
+ /* Default attribute value for the peer. */
+ u_int32_t config;
+#define PEER_CONFIG_WEIGHT (1 << 0) /* Default weight. */
+#define PEER_CONFIG_TIMER (1 << 1) /* keepalive & holdtime */
+#define PEER_CONFIG_CONNECT (1 << 2) /* connect */
+#define PEER_CONFIG_ROUTEADV (1 << 3) /* route advertise */
+ u_int32_t weight;
+ u_int32_t holdtime;
+ u_int32_t keepalive;
+ u_int32_t connect;
+ u_int32_t routeadv;
+
+ /* Timer values. */
+ u_int32_t v_start;
+ u_int32_t v_connect;
+ u_int32_t v_holdtime;
+ u_int32_t v_keepalive;
+ u_int32_t v_asorig;
+ u_int32_t v_routeadv;
+
+ /* Threads. */
+ struct thread *t_read;
+ struct thread *t_write;
+ struct thread *t_start;
+ struct thread *t_connect;
+ struct thread *t_holdtime;
+ struct thread *t_keepalive;
+ struct thread *t_asorig;
+ struct thread *t_routeadv;
+
+ /* Statistics field */
+ u_int32_t open_in; /* Open message input count */
+ u_int32_t open_out; /* Open message output count */
+ u_int32_t update_in; /* Update message input count */
+ u_int32_t update_out; /* Update message ouput count */
+ time_t update_time; /* Update message received time. */
+ u_int32_t keepalive_in; /* Keepalive input count */
+ u_int32_t keepalive_out; /* Keepalive output count */
+ u_int32_t notify_in; /* Notify input count */
+ u_int32_t notify_out; /* Notify output count */
+ u_int32_t refresh_in; /* Route Refresh input count */
+ u_int32_t refresh_out; /* Route Refresh output count */
+ u_int32_t dynamic_cap_in; /* Dynamic Capability input count. */
+ u_int32_t dynamic_cap_out; /* Dynamic Capability output count. */
+
+ /* BGP state count */
+ u_int32_t established; /* Established */
+ u_int32_t dropped; /* Dropped */
+
+ /* Syncronization list and time. */
+ struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
+ time_t synctime;
+
+ /* Send prefix count. */
+ unsigned long scount[AFI_MAX][SAFI_MAX];
+
+ /* Announcement attribute hash. */
+ struct hash *hash[AFI_MAX][SAFI_MAX];
+
+ /* Notify data. */
+ struct bgp_notify notify;
+
+ /* Whole packet size to be read. */
+ unsigned long packet_size;
+
+ /* Filter structure. */
+ struct bgp_filter filter[AFI_MAX][SAFI_MAX];
+
+ /* ORF Prefix-list */
+ struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
+
+ /* Prefix count. */
+ unsigned long pcount[AFI_MAX][SAFI_MAX];
+
+ /* Max prefix count. */
+ unsigned long pmax[AFI_MAX][SAFI_MAX];
+
+ /* allowas-in. */
+ char allowas_in[AFI_MAX][SAFI_MAX];
+};
+
+/* 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
+#define BGP_VERSION_MP_4_DRAFT_00 40
+
+/* 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
+
+/* BGP update origin. */
+#define BGP_ORIGIN_IGP 0
+#define BGP_ORIGIN_EGP 1
+#define BGP_ORIGIN_INCOMPLETE 2
+
+/* BGP notify message codes. */
+#define BGP_NOTIFY_HEADER_ERR 1
+#define BGP_NOTIFY_OPEN_ERR 2
+#define BGP_NOTIFY_UPDATE_ERR 3
+#define BGP_NOTIFY_HOLD_ERR 4
+#define BGP_NOTIFY_FSM_ERR 5
+#define BGP_NOTIFY_CEASE 6
+#define BGP_NOTIFY_CAPABILITY_ERR 7
+#define BGP_NOTIFY_MAX 8
+
+/* BGP_NOTIFY_HEADER_ERR sub codes. */
+#define BGP_NOTIFY_HEADER_NOT_SYNC 1
+#define BGP_NOTIFY_HEADER_BAD_MESLEN 2
+#define BGP_NOTIFY_HEADER_BAD_MESTYPE 3
+#define BGP_NOTIFY_HEADER_MAX 4
+
+/* BGP_NOTIFY_OPEN_ERR sub codes. */
+#define BGP_NOTIFY_OPEN_UNSUP_VERSION 1
+#define BGP_NOTIFY_OPEN_BAD_PEER_AS 2
+#define BGP_NOTIFY_OPEN_BAD_BGP_IDENT 3
+#define BGP_NOTIFY_OPEN_UNSUP_PARAM 4
+#define BGP_NOTIFY_OPEN_AUTH_FAILURE 5
+#define BGP_NOTIFY_OPEN_UNACEP_HOLDTIME 6
+#define BGP_NOTIFY_OPEN_UNSUP_CAPBL 7
+#define BGP_NOTIFY_OPEN_MAX 8
+
+/* BGP_NOTIFY_UPDATE_ERR sub codes. */
+#define BGP_NOTIFY_UPDATE_MAL_ATTR 1
+#define BGP_NOTIFY_UPDATE_UNREC_ATTR 2
+#define BGP_NOTIFY_UPDATE_MISS_ATTR 3
+#define BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR 4
+#define BGP_NOTIFY_UPDATE_ATTR_LENG_ERR 5
+#define BGP_NOTIFY_UPDATE_INVAL_ORIGIN 6
+#define BGP_NOTIFY_UPDATE_AS_ROUTE_LOOP 7
+#define BGP_NOTIFY_UPDATE_INVAL_NEXT_HOP 8
+#define BGP_NOTIFY_UPDATE_OPT_ATTR_ERR 9
+#define BGP_NOTIFY_UPDATE_INVAL_NETWORK 10
+#define BGP_NOTIFY_UPDATE_MAL_AS_PATH 11
+#define BGP_NOTIFY_UPDATE_MAX 12
+
+/* BGP_NOTIFY_CEASE sub codes (draft-ietf-idr-cease-subcode-00). */
+#define BGP_NOTIFY_CEASE_MAX_PREFIX 1
+#define BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN 2
+#define BGP_NOTIFY_CEASE_PEER_UNCONFIG 3
+#define BGP_NOTIFY_CEASE_ADMIN_RESET 4
+#define BGP_NOTIFY_CEASE_CONNECT_REJECT 5
+#define BGP_NOTIFY_CEASE_CONFIG_CHANGE 6
+#define BGP_NOTIFY_CEASE_MAX 7
+
+/* BGP_NOTIFY_CAPABILITY_ERR sub codes (draft-ietf-idr-dynamic-cap-02). */
+#define BGP_NOTIFY_CAPABILITY_INVALID_ACTION 1
+#define BGP_NOTIFY_CAPABILITY_INVALID_LENGTH 2
+#define BGP_NOTIFY_CAPABILITY_MALFORMED_CODE 3
+#define BGP_NOTIFY_CAPABILITY_MAX 4
+
+/* BGP finite state machine status. */
+#define Idle 1
+#define Connect 2
+#define Active 3
+#define OpenSent 4
+#define OpenConfirm 5
+#define Established 6
+#define BGP_STATUS_MAX 7
+
+/* 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 BGP_EVENTS_MAX 14
+
+/* 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
+
+/* 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_VTYSH_PATH "/tmp/.bgpd"
+#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
+};
+
+/* Macros. */
+#define BGP_INPUT(P) ((P)->ibuf)
+#define BGP_INPUT_PNT(P) (STREAM_PNT(BGP_INPUT(P)))
+
+/* Macro to check BGP information is alive or not. */
+#define BGP_INFO_HOLDDOWN(BI) \
+ (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
+ || CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \
+ || CHECK_FLAG ((BI)->flags, BGP_INFO_DAMPED))
+
+/* 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_MAX -29
+
+extern struct bgp_master *bm;
+
+extern struct thread_master *master;
+
+/* Prototypes. */
+void bgp_terminate (void);
+void bgp_reset (void);
+void bgp_zclient_reset ();
+int bgp_nexthop_set (union sockunion *, union sockunion *,
+ struct bgp_nexthop *, struct peer *);
+struct bgp *bgp_get_default ();
+struct bgp *bgp_lookup (as_t, char *);
+struct bgp *bgp_lookup_by_name (char *);
+struct peer *peer_lookup (struct bgp *, union sockunion *);
+struct peer_group *peer_group_lookup (struct bgp *, char *);
+struct peer_group *peer_group_get (struct bgp *, char *);
+struct peer *peer_lookup_with_open (union sockunion *, as_t, struct in_addr *,
+ int *);
+int peer_sort (struct peer *peer);
+int peer_active (struct peer *);
+int peer_active_nego (struct peer *);
+struct peer *peer_create_accept (struct bgp *);
+char *peer_uptime (time_t, char *, size_t);
+void bgp_config_write_family_header (struct vty *, afi_t, safi_t, int *);
+
+void bgp_master_init ();
+
+void bgp_init ();
+
+int bgp_option_set (int);
+int bgp_option_unset (int);
+int bgp_option_check (int);
+
+int bgp_get (struct bgp **, as_t *, char *);
+int bgp_delete (struct bgp *);
+
+int bgp_flag_set (struct bgp *, int);
+int bgp_flag_unset (struct bgp *, int);
+int bgp_flag_check (struct bgp *, int);
+
+int bgp_router_id_set (struct bgp *, struct in_addr *);
+int bgp_router_id_unset (struct bgp *);
+
+int bgp_cluster_id_set (struct bgp *, struct in_addr *);
+int bgp_cluster_id_unset (struct bgp *);
+
+int bgp_confederation_id_set (struct bgp *, as_t);
+int bgp_confederation_id_unset (struct bgp *);
+int bgp_confederation_peers_check (struct bgp *, as_t);
+
+int bgp_confederation_peers_add (struct bgp *, as_t);
+int bgp_confederation_peers_remove (struct bgp *, as_t);
+
+int bgp_timers_set (struct bgp *, u_int32_t, u_int32_t);
+int bgp_timers_unset (struct bgp *);
+
+int bgp_default_local_preference_set (struct bgp *, u_int32_t);
+int bgp_default_local_preference_unset (struct bgp *);
+
+int peer_remote_as (struct bgp *, union sockunion *, as_t *, afi_t, safi_t);
+int peer_group_remote_as (struct bgp *, char *, as_t *);
+int peer_delete (struct peer *peer);
+int peer_group_delete (struct peer_group *);
+int peer_group_remote_as_delete (struct peer_group *);
+
+int peer_activate (struct peer *, afi_t, safi_t);
+int peer_deactivate (struct peer *, afi_t, safi_t);
+
+int peer_group_bind (struct bgp *, union sockunion *, struct peer_group *,
+ afi_t, safi_t, as_t *);
+int peer_group_unbind (struct bgp *, struct peer *, struct peer_group *,
+ afi_t, safi_t);
+
+int peer_flag_set (struct peer *, u_int32_t);
+int peer_flag_unset (struct peer *, u_int32_t);
+
+int peer_af_flag_set (struct peer *, afi_t, safi_t, u_int32_t);
+int peer_af_flag_unset (struct peer *, afi_t, safi_t, u_int32_t);
+int peer_af_flag_check (struct peer *, afi_t, safi_t, u_int32_t);
+
+int peer_ebgp_multihop_set (struct peer *, int);
+int peer_ebgp_multihop_unset (struct peer *);
+
+int peer_description_set (struct peer *, char *);
+int peer_description_unset (struct peer *);
+
+int peer_update_source_if_set (struct peer *, char *);
+int peer_update_source_addr_set (struct peer *, union sockunion *);
+int peer_update_source_unset (struct peer *);
+
+int peer_default_originate_set (struct peer *, afi_t, safi_t, char *);
+int peer_default_originate_unset (struct peer *, afi_t, safi_t);
+
+int peer_port_set (struct peer *, u_int16_t);
+int peer_port_unset (struct peer *);
+
+int peer_weight_set (struct peer *, u_int16_t);
+int peer_weight_unset (struct peer *);
+
+int peer_timers_set (struct peer *, u_int32_t, u_int32_t);
+int peer_timers_unset (struct peer *);
+
+int peer_timers_connect_set (struct peer *, u_int32_t);
+int peer_timers_connect_unset (struct peer *);
+
+int peer_advertise_interval_set (struct peer *, u_int32_t);
+int peer_advertise_interval_unset (struct peer *);
+
+int peer_version_set (struct peer *, int);
+int peer_version_unset (struct peer *);
+
+int peer_interface_set (struct peer *, char *);
+int peer_interface_unset (struct peer *);
+
+int peer_distribute_set (struct peer *, afi_t, safi_t, int, char *);
+int peer_distribute_unset (struct peer *, afi_t, safi_t, int);
+
+int peer_allowas_in_set (struct peer *, afi_t, safi_t, int);
+int peer_allowas_in_unset (struct peer *, afi_t, safi_t);
+
+int peer_local_as_set (struct peer *, as_t, int);
+int peer_local_as_unset (struct peer *);
+
+int peer_prefix_list_set (struct peer *, afi_t, safi_t, int, char *);
+int peer_prefix_list_unset (struct peer *, afi_t, safi_t, int);
+
+int peer_aslist_set (struct peer *, afi_t, safi_t, int, char *);
+int peer_aslist_unset (struct peer *,afi_t, safi_t, int);
+
+int peer_route_map_set (struct peer *, afi_t, safi_t, int, char *);
+int peer_route_map_unset (struct peer *, afi_t, safi_t, int);
+
+int peer_unsuppress_map_set (struct peer *, afi_t, safi_t, char *);
+int peer_unsuppress_map_unset (struct peer *, afi_t, safi_t);
+
+int peer_maximum_prefix_set (struct peer *, afi_t, safi_t, u_int32_t, int);
+int peer_maximum_prefix_unset (struct peer *, afi_t, safi_t);
+
+int peer_clear (struct peer *);
+int peer_clear_soft (struct peer *, afi_t, safi_t, enum bgp_clear_type);