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Diffstat (limited to 'bgpd/bgpd.h')
| -rw-r--r-- | bgpd/bgpd.h | 824 |
1 files changed, 824 insertions, 0 deletions
diff --git a/bgpd/bgpd.h b/bgpd/bgpd.h new file mode 100644 index 00000000..01d47212 --- /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); 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