/* 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 this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _QUAGGA_BGPD_H
#define _QUAGGA_BGPD_H
#include "qobj.h"
#include <pthread.h>
#include "frr_pthread.h"
#include "lib/json.h"
#include "vrf.h"
#include "vty.h"
/* For union sockunion. */
#include "queue.h"
#include "sockunion.h"
#include "routemap.h"
#include "linklist.h"
#include "defaults.h"
#include "bgp_memory.h"
#include "bitfield.h"
#include "vxlan.h"
#include "bgp_labelpool.h"
#include "bgp_addpath_types.h"
#define BGP_MAX_HOSTNAME 64 /* Linux max, is larger than most other sys */
#define BGP_PEER_MAX_HASH_SIZE 16384
/* Default interval for IPv6 RAs when triggered by BGP unnumbered neighbor. */
#define BGP_UNNUM_DEFAULT_RA_INTERVAL 10
struct update_subgroup;
struct bpacket;
struct bgp_pbr_config;
/*
* Allow the neighbor XXXX remote-as to take internal or external
* AS_SPECIFIED is zero to auto-inherit original non-feature/enhancement
* behavior
* in the system.
*/
enum { AS_UNSPECIFIED = 0,
AS_SPECIFIED,
AS_INTERNAL,
AS_EXTERNAL,
};
/* Typedef BGP specific types. */
typedef uint32_t as_t;
typedef uint16_t as16_t; /* we may still encounter 16 Bit asnums */
typedef uint16_t bgp_size_t;
#define max(a, b) \
({ \
__typeof__(a) _a = (a); \
__typeof__(b) _b = (b); \
_a > _b ? _a : _b; \
})
enum bgp_af_index {
BGP_AF_START,
BGP_AF_IPV4_UNICAST = BGP_AF_START,
BGP_AF_IPV4_MULTICAST,
BGP_AF_IPV4_VPN,
BGP_AF_IPV6_UNICAST,
BGP_AF_IPV6_MULTICAST,
BGP_AF_IPV6_VPN,
BGP_AF_IPV4_ENCAP,
BGP_AF_IPV6_ENCAP,
BGP_AF_L2VPN_EVPN,
BGP_AF_IPV4_LBL_UNICAST,
BGP_AF_IPV6_LBL_UNICAST,
BGP_AF_IPV4_FLOWSPEC,
BGP_AF_IPV6_FLOWSPEC,
BGP_AF_MAX
};
#define AF_FOREACH(af) for ((af) = BGP_AF_START; (af) < BGP_AF_MAX; (af)++)
#define FOREACH_AFI_SAFI(afi, safi) \
for (afi = AFI_IP; afi < AFI_MAX; afi++) \
for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
extern struct frr_pthread *bgp_pth_io;
extern struct frr_pthread *bgp_pth_ka;
/* BGP master for system wide configurations and variables. */
struct bgp_master {
/* BGP instance list. */
struct list *bgp;
/* BGP thread master. */
struct thread_master *master;
/* work queues */
struct work_queue *process_main_queue;
/* Listening sockets */
struct list *listen_sockets;
/* BGP port number. */
uint16_t port;
/* Listener address */
char *address;
/* BGP start time. */
time_t start_time;
/* Various BGP global configuration. */
uint8_t options;
#define BGP_OPT_NO_FIB (1 << 0)
#define BGP_OPT_MULTIPLE_INSTANCE (1 << 1)
#define BGP_OPT_CONFIG_CISCO (1 << 2)
#define BGP_OPT_NO_LISTEN (1 << 3)
#define BGP_OPT_NO_ZEBRA (1 << 4)
uint64_t updgrp_idspace;
uint64_t subgrp_idspace;
/* timer to dampen route map changes */
struct thread *t_rmap_update; /* Handle route map updates */
uint32_t rmap_update_timer; /* Route map update timer */
#define RMAP_DEFAULT_UPDATE_TIMER 5 /* disabled by default */
/* Id space for automatic RD derivation for an EVI/VRF */
bitfield_t rd_idspace;
/* dynamic mpls label allocation pool */
struct labelpool labelpool;
bool terminating; /* global flag that sigint terminate seen */
QOBJ_FIELDS
};
DECLARE_QOBJ_TYPE(bgp_master)
/* BGP route-map structure. */
struct bgp_rmap {
char *name;
struct route_map *map;
};
struct bgp_redist {
unsigned short instance;
/* BGP redistribute metric configuration. */
uint8_t redist_metric_flag;
uint32_t redist_metric;
/* BGP redistribute route-map. */
struct bgp_rmap rmap;
};
typedef enum {
BGP_VPN_POLICY_DIR_FROMVPN = 0,
BGP_VPN_POLICY_DIR_TOVPN = 1,
BGP_VPN_POLICY_DIR_MAX = 2
} vpn_policy_direction_t;
struct vpn_policy {
struct bgp *bgp; /* parent */
afi_t afi;
struct ecommunity *rtlist[BGP_VPN_POLICY_DIR_MAX];
struct ecommunity *import_redirect_rtlist;
char *rmap_name[BGP_VPN_POLICY_DIR_MAX];
struct route_map *rmap[BGP_VPN_POLICY_DIR_MAX];
/* should be mpls_label_t? */
uint32_t tovpn_label; /* may be MPLS_LABEL_NONE */
uint32_t tovpn_zebra_vrf_label_last_sent;
struct prefix_rd tovpn_rd;
struct prefix tovpn_nexthop; /* unset => set to 0 */
uint32_t flags;
#define BGP_VPN_POLICY_TOVPN_LABEL_AUTO (1 << 0)
#define BGP_VPN_POLICY_TOVPN_RD_SET (1 << 1)
#define BGP_VPN_POLICY_TOVPN_NEXTHOP_SET (1 << 2)
/*
* If we are importing another vrf into us keep a list of
* vrf names that are being imported into us.
*/
struct list *import_vrf;
/*
* if we are being exported to another vrf keep a list of
* vrf names that we are being exported to.
*/
struct list *export_vrf;
};
/*
* Type of 'struct bgp'.
* - Default: The default instance
* - VRF: A specific (non-default) VRF
* - View: An instance used for route exchange
* The "default" instance is treated separately to simplify the code. Note
* that if deployed in a Multi-VRF environment, it may not exist.
*/
enum bgp_instance_type {
BGP_INSTANCE_TYPE_DEFAULT,
BGP_INSTANCE_TYPE_VRF,
BGP_INSTANCE_TYPE_VIEW
};
/* BGP instance structure. */
struct bgp {
/* AS number of this BGP instance. */
as_t as;
/* Name of this BGP instance. */
char *name;
char *name_pretty; /* printable "VRF|VIEW name|default" */
/* Type of instance and VRF id. */
enum bgp_instance_type inst_type;
vrf_id_t vrf_id;
/* Reference count to allow peer_delete to finish after bgp_delete */
int lock;
/* Self peer. */
struct peer *peer_self;
/* BGP peer. */
struct list *peer;
struct hash *peerhash;
/* BGP peer group. */
struct list *group;
/* The maximum number of BGP dynamic neighbors that can be created */
int dynamic_neighbors_limit;
/* The current number of BGP dynamic neighbors */
int dynamic_neighbors_count;
struct hash *update_groups[BGP_AF_MAX];
/*
* Global statistics for update groups.
*/
struct {
uint32_t join_events;
uint32_t prune_events;
uint32_t merge_events;
uint32_t split_events;
uint32_t updgrp_switch_events;
uint32_t peer_refreshes_combined;
uint32_t adj_count;
uint32_t merge_checks_triggered;
uint32_t updgrps_created;
uint32_t updgrps_deleted;
uint32_t subgrps_created;
uint32_t subgrps_deleted;
} update_group_stats;
/* BGP configuration. */
uint16_t config;
#define BGP_CONFIG_CLUSTER_ID (1 << 0)
#define BGP_CONFIG_CONFEDERATION (1 << 1)
/* BGP router identifier. */
struct in_addr router_id;
struct in_addr router_id_static;
struct in_addr router_id_zebra;
/* 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;
struct thread
*t_startup; /* start-up timer on only once at the beginning */
uint32_t v_maxmed_onstartup; /* Duration of max-med on start-up */
#define BGP_MAXMED_ONSTARTUP_UNCONFIGURED 0 /* 0 means off, its the default */
uint32_t maxmed_onstartup_value; /* Max-med value when active on
start-up */
struct thread
*t_maxmed_onstartup; /* non-null when max-med onstartup is on */
uint8_t maxmed_onstartup_over; /* Flag to make it effective only once */
uint8_t v_maxmed_admin; /* 1/0 if max-med administrative is on/off */
#define BGP_MAXMED_ADMIN_UNCONFIGURED 0 /* Off by default */
uint32_t maxmed_admin_value; /* Max-med value when administrative in on
*/
#define BGP_MAXMED_VALUE_DEFAULT 4294967294 /* Maximum by default */
uint8_t maxmed_active; /* 1/0 if max-med is active or not */
uint32_t maxmed_value; /* Max-med value when its active */
/* BGP update delay on startup */
struct thread *t_update_delay;
struct thread *t_establish_wait;
uint8_t update_delay_over;
uint8_t main_zebra_update_hold;
uint8_t main_peers_update_hold;
uint16_t v_update_delay;
uint16_t v_establish_wait;
char update_delay_begin_time[64];
char update_delay_end_time[64];
char update_delay_zebra_resume_time[64];
char update_delay_peers_resume_time[64];
uint32_t established;
uint32_t restarted_peers;
uint32_t implicit_eors;
uint32_t explicit_eors;
#define BGP_UPDATE_DELAY_DEF 0
#define BGP_UPDATE_DELAY_MIN 0
#define BGP_UPDATE_DELAY_MAX 3600
/* BGP flags. */
uint32_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)
#define BGP_FLAG_ASPATH_MULTIPATH_RELAX (1 << 14)
#define BGP_FLAG_RR_ALLOW_OUTBOUND_POLICY (1 << 15)
#define BGP_FLAG_DISABLE_NH_CONNECTED_CHK (1 << 16)
#define BGP_FLAG_MULTIPATH_RELAX_AS_SET (1 << 17)
#define BGP_FLAG_FORCE_STATIC_PROCESS (1 << 18)
#define BGP_FLAG_SHOW_HOSTNAME (1 << 19)
#define BGP_FLAG_GR_PRESERVE_FWD (1 << 20)
#define BGP_FLAG_GRACEFUL_SHUTDOWN (1 << 21)
/* BGP Per AF flags */
uint16_t af_flags[AFI_MAX][SAFI_MAX];
#define BGP_CONFIG_DAMPENING (1 << 0)
/* l2vpn evpn flags - 1 << 0 is used for DAMPENNG */
#define BGP_L2VPN_EVPN_ADVERTISE_IPV4_UNICAST (1 << 1)
#define BGP_L2VPN_EVPN_ADVERTISE_IPV6_UNICAST (1 << 2)
#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4 (1 << 3)
#define BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6 (1 << 4)
/* import/export between address families */
#define BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT (1 << 5)
#define BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT (1 << 6)
/* vrf-route leaking flags */
#define BGP_CONFIG_VRF_TO_VRF_IMPORT (1 << 7)
#define BGP_CONFIG_VRF_TO_VRF_EXPORT (1 << 8)
/* Route table for next-hop lookup cache. */
struct bgp_table *nexthop_cache_table[AFI_MAX];
/* Route table for import-check */
struct bgp_table *import_check_table[AFI_MAX];
struct bgp_table *connected_table[AFI_MAX];
struct hash *address_hash;
/* DB for all local tunnel-ips - used mainly for martian checks
Currently it only has all VxLan tunnel IPs*/
struct hash *tip_hash;
/* 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 table route-map. */
struct bgp_rmap table_map[AFI_MAX][SAFI_MAX];
/* BGP redistribute configuration. */
struct list *redist[AFI_MAX][ZEBRA_ROUTE_MAX];
/* Allocate MPLS labels */
uint8_t allocate_mpls_labels[AFI_MAX][SAFI_MAX];
/* Allocate hash entries to store policy routing information
* The hash are used to host pbr rules somewhere.
* Actually, pbr will only be used by flowspec
* those hash elements will have relationship together as
* illustrated in below diagram:
*
* pbr_action a <----- pbr_match i <--- pbr_match_entry 1..n
* <----- pbr_match j <--- pbr_match_entry 1..m
*
* - here in BGP structure, the list of match and actions will
* stand for the list of ipset sets, and table_ids in the kernel
* - the arrow above between pbr_match and pbr_action indicate
* that a backpointer permits match to find the action
* - the arrow betwen match_entry and match is a hash list
* contained in match, that lists the whole set of entries
*/
struct hash *pbr_match_hash;
struct hash *pbr_action_hash;
/* timer to re-evaluate neighbor default-originate route-maps */
struct thread *t_rmap_def_originate_eval;
#define RMAP_DEFAULT_ORIGINATE_EVAL_TIMER 5
/* BGP distance configuration. */
uint8_t distance_ebgp[AFI_MAX][SAFI_MAX];
uint8_t distance_ibgp[AFI_MAX][SAFI_MAX];
uint8_t distance_local[AFI_MAX][SAFI_MAX];
/* BGP default local-preference. */
uint32_t default_local_pref;
/* BGP default subgroup pkt queue max */
uint32_t default_subgroup_pkt_queue_max;
/* BGP default timer. */
uint32_t default_holdtime;
uint32_t default_keepalive;
/* BGP graceful restart */
uint32_t restart_time;
uint32_t stalepath_time;
/* Maximum-paths configuration */
struct bgp_maxpaths_cfg {
uint16_t maxpaths_ebgp;
uint16_t maxpaths_ibgp;
uint16_t ibgp_flags;
#define BGP_FLAG_IBGP_MULTIPATH_SAME_CLUSTERLEN (1 << 0)
} maxpaths[AFI_MAX][SAFI_MAX];
_Atomic uint32_t wpkt_quanta; // max # packets to write per i/o cycle
_Atomic uint32_t rpkt_quanta; // max # packets to read per i/o cycle
/* Automatic coalesce adjust on/off */
bool heuristic_coalesce;
/* Actual coalesce time */
uint32_t coalesce_time;
/* Auto-shutdown new peers */
bool autoshutdown;
struct bgp_addpath_bgp_data tx_addpath;
#if ENABLE_BGP_VNC
struct rfapi_cfg *rfapi_cfg;
struct rfapi *rfapi;
#endif
/* EVPN related information */
/* EVI hash table */
struct hash *vnihash;
/* EVPN enable - advertise gateway macip routes */
int advertise_gw_macip;
/* EVPN enable - advertise local VNIs and their MACs etc. */
int advertise_all_vni;
struct bgp_evpn_info *evpn_info;
/* EVPN - use RFC 8365 to auto-derive RT */
int advertise_autort_rfc8365;
/*
* Flooding mechanism for BUM packets for VxLAN-EVPN.
*/
enum vxlan_flood_control vxlan_flood_ctrl;
/* Hash table of Import RTs to EVIs */
struct hash *import_rt_hash;
/* Hash table of VRF import RTs to VRFs */
struct hash *vrf_import_rt_hash;
/* L3-VNI corresponding to this vrf */
vni_t l3vni;
/* router-mac to be used in mac-ip routes for this vrf */
struct ethaddr rmac;
/* originator ip - to be used as NH for type-5 routes */
struct in_addr originator_ip;
/* vrf flags */
uint32_t vrf_flags;
#define BGP_VRF_AUTO (1 << 0)
#define BGP_VRF_IMPORT_RT_CFGD (1 << 1)
#define BGP_VRF_EXPORT_RT_CFGD (1 << 2)
#define BGP_VRF_RD_CFGD (1 << 3)
#define BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY (1 << 4)
/* unique ID for auto derivation of RD for this vrf */
uint16_t vrf_rd_id;
/* Automatically derived RD for this VRF */
struct prefix_rd vrf_prd_auto;
/* RD for this VRF */
struct prefix_rd vrf_prd;
/* import rt list for the vrf instance */
struct list *vrf_import_rtl;
/* export rt list for the vrf instance */
struct list *vrf_export_rtl;
/* list of corresponding l2vnis (struct bgpevpn) */
struct list *l2vnis;
/* route map for advertise ipv4/ipv6 unicast (type-5 routes) */
struct bgp_rmap adv_cmd_rmap[AFI_MAX][SAFI_MAX];
struct vpn_policy vpn_policy[AFI_MAX];
struct bgp_pbr_config *bgp_pbr_cfg;
/* local esi hash table */
struct hash *esihash;
/* Count of peers in established state */
uint32_t established_peers;
QOBJ_FIELDS
};
DECLARE_QOBJ_TYPE(bgp)
#define BGP_ROUTE_ADV_HOLD(bgp) (bgp->main_peers_update_hold)
#define IS_BGP_INST_KNOWN_TO_ZEBRA(bgp) \
(bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT \
|| (bgp->inst_type == BGP_INSTANCE_TYPE_VRF \
&& bgp->vrf_id != VRF_UNKNOWN))
/* 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;
/** Dynamic neighbor listening ranges */
struct list *listen_range[AFI_MAX];
/* Peer-group config */
struct peer *conf;
};
/* BGP Notify message format. */
struct bgp_notify {
uint8_t code;
uint8_t subcode;
char *data;
bgp_size_t length;
uint8_t *raw_data;
};
/* Next hop self address. */
struct bgp_nexthop {
struct interface *ifp;
struct in_addr v4;
struct in6_addr v6_global;
struct in6_addr v6_local;
};
/* BGP addpath values */
#define BGP_ADDPATH_RX 1
#define BGP_ADDPATH_TX 2
#define BGP_ADDPATH_ID_LEN 4
#define BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE 1
/* Route map direction */
#define RMAP_IN 0
#define RMAP_OUT 1
#define RMAP_MAX 2
#include "filter.h"
/* 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[RMAP_MAX];
/* Unsuppress-map. */
struct {
char *name;
struct route_map *map;
} usmap;
};
/* IBGP/EBGP identifier. We also have a CONFED peer, which is to say,
a peer who's AS is part of our Confederation. */
typedef enum {
BGP_PEER_IBGP = 1,
BGP_PEER_EBGP,
BGP_PEER_INTERNAL,
BGP_PEER_CONFED,
} bgp_peer_sort_t;
/* BGP message header and packet size. */
#define BGP_MARKER_SIZE 16
#define BGP_HEADER_SIZE 19
#define BGP_MAX_PACKET_SIZE 4096
#define BGP_MAX_PACKET_SIZE_OVERFLOW 1024
/*
* Trigger delay for bgp_announce_route().
*/
#define BGP_ANNOUNCE_ROUTE_SHORT_DELAY_MS 100
#define BGP_ANNOUNCE_ROUTE_DELAY_MS 500
struct peer_af {
/* back pointer to the peer */
struct peer *peer;
/* which subgroup the peer_af belongs to */
struct update_subgroup *subgroup;
/* for being part of an update subgroup's peer list */
LIST_ENTRY(peer_af) subgrp_train;
/* for being part of a packet's peer list */
LIST_ENTRY(peer_af) pkt_train;
struct bpacket *next_pkt_to_send;
/*
* Trigger timer for bgp_announce_route().
*/
struct thread *t_announce_route;
afi_t afi;
safi_t safi;
int afid;
};
/* BGP neighbor structure. */
struct peer {
/* BGP structure. */
struct bgp *bgp;
/* reference count, primarily to allow bgp_process'ing of route_node's
* to be done after a struct peer is deleted.
*
* named 'lock' for hysterical reasons within Quagga.
*/
int lock;
/* BGP peer group. */
struct peer_group *group;
uint64_t version[AFI_MAX][SAFI_MAX];
/* BGP peer_af structures, per configured AF on this peer */
struct peer_af *peer_af_array[BGP_AF_MAX];
/* Peer's remote AS number. */
int as_type;
as_t as;
/* Peer's local AS number. */
as_t local_as;
bgp_peer_sort_t sort;
/* 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. */
pthread_mutex_t io_mtx; // guards ibuf, obuf
struct stream_fifo *ibuf; // packets waiting to be processed
struct stream_fifo *obuf; // packets waiting to be written
struct ringbuf *ibuf_work; // WiP buffer used by bgp_read() only
struct stream *obuf_work; // WiP buffer used to construct packets
struct stream *curr; // the current packet being parsed
/* We use a separate stream to encode MP_REACH_NLRI for efficient
* NLRI packing. peer->obuf_work stores all the other attributes. The
* actual packet is then constructed by concatenating the two.
*/
struct stream *scratch;
/* the doppelganger peer structure, due to dual TCP conn setup */
struct peer *doppelganger;
/* Status of the peer. */
int status;
int ostatus;
/* FSM events, stored for debug purposes.
* Note: uchar used for reduced memory usage.
*/
unsigned char cur_event;
unsigned char last_event;
unsigned char last_major_event;
/* Peer index, used for dumping TABLE_DUMP_V2 format */
uint16_t table_dump_index;
/* Peer information */
int fd; /* File descriptor */
int ttl; /* TTL of TCP connection to the peer. */
int rtt; /* Estimated round-trip-time from TCP_INFO */
int gtsm_hops; /* minimum hopcount to 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. */
#define BGP_PEER_SU_UNSPEC(peer) (peer->su.sa.sa_family == AF_UNSPEC)
time_t uptime; /* Last Up/Down time */
time_t readtime; /* Last read time */
time_t resettime; /* Last reset time */
char *conf_if; /* neighbor interface config name. */
struct interface *ifp; /* corresponding interface */
char *ifname; /* bind interface name. */
char *update_if;
union sockunion *update_source;
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. */
uint8_t afc[AFI_MAX][SAFI_MAX];
uint8_t afc_nego[AFI_MAX][SAFI_MAX];
uint8_t afc_adv[AFI_MAX][SAFI_MAX];
uint8_t afc_recv[AFI_MAX][SAFI_MAX];
/* Capability flags (reset in bgp_stop) */
uint32_t 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 */
#define PEER_CAP_RESTART_ADV (1 << 5) /* restart advertised */
#define PEER_CAP_RESTART_RCV (1 << 6) /* restart received */
#define PEER_CAP_AS4_ADV (1 << 7) /* as4 advertised */
#define PEER_CAP_AS4_RCV (1 << 8) /* as4 received */
#define PEER_CAP_RESTART_BIT_ADV (1 << 9) /* sent restart state */
#define PEER_CAP_RESTART_BIT_RCV (1 << 10) /* peer restart state */
#define PEER_CAP_ADDPATH_ADV (1 << 11) /* addpath advertised */
#define PEER_CAP_ADDPATH_RCV (1 << 12) /* addpath received */
#define PEER_CAP_ENHE_ADV (1 << 13) /* Extended nexthop advertised */
#define PEER_CAP_ENHE_RCV (1 << 14) /* Extended nexthop received */
#define PEER_CAP_HOSTNAME_ADV (1 << 15) /* hostname advertised */
#define PEER_CAP_HOSTNAME_RCV (1 << 16) /* hostname received */
/* Capability flags (reset in bgp_stop) */
uint32_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 */
#define PEER_CAP_RESTART_AF_RCV (1 << 6) /* graceful restart afi/safi received */
#define PEER_CAP_RESTART_AF_PRESERVE_RCV (1 << 7) /* graceful restart afi/safi F-bit received */
#define PEER_CAP_ADDPATH_AF_TX_ADV (1 << 8) /* addpath tx advertised */
#define PEER_CAP_ADDPATH_AF_TX_RCV (1 << 9) /* addpath tx received */
#define PEER_CAP_ADDPATH_AF_RX_ADV (1 << 10) /* addpath rx advertised */
#define PEER_CAP_ADDPATH_AF_RX_RCV (1 << 11) /* addpath rx received */
#define PEER_CAP_ENHE_AF_ADV (1 << 12) /* Extended nexthopi afi/safi advertised */
#define PEER_CAP_ENHE_AF_RCV (1 << 13) /* Extended nexthop afi/safi received */
#define PEER_CAP_ENHE_AF_NEGO (1 << 14) /* Extended nexthop afi/safi negotiated */
/* Global configuration flags. */
/*
* Parallel array to flags that indicates whether each flag originates
* from a peer-group or if it is config that is specific to this
* individual peer. If a flag is set independent of the peer-group, the
* same bit should be set here. If this peer is a peer-group, this
* memory region should be all zeros.
*
* The assumption is that the default state for all flags is unset,
* so if a flag is unset, the corresponding override flag is unset too.
* However if a flag is set, the corresponding override flag is set.
*/
uint32_t flags_override;
/*
* Parallel array to flags that indicates whether the default behavior
* of *flags_override* should be inverted. If a flag is unset and the
* corresponding invert flag is set, the corresponding override flag
* would be set. However if a flag is set and the corresponding invert
* flag is unset, the corresponding override flag would be unset.
*
* This can be used for attributes like *send-community*, which are
* implicitely enabled and have to be disabled explicitely, compared to
* 'normal' attributes like *next-hop-self* which are implicitely set.
*
* All operations dealing with flags should apply the following boolean
* logic to keep the internal flag system in a sane state:
*
* value=0 invert=0 Inherit flag if member, otherwise unset flag
* value=0 invert=1 Unset flag unconditionally
* value=1 invert=0 Set flag unconditionally
* value=1 invert=1 Inherit flag if member, otherwise set flag
*
* Contrary to the implementation of *flags_override*, the flag
* inversion state can be set either on the peer OR the peer *and* the
* peer-group. This was done on purpose, as the inversion state of a
* flag can be determined on either the peer or the peer-group.
*
* Example: Enabling the cisco configuration mode inverts all flags
* related to *send-community* unconditionally for both peer-groups and
* peers.
*
* This behavior is different for interface peers though, which enable
* the *extended-nexthop* flag by default, which regular peers do not.
* As the peer-group can contain both regular and interface peers, the
* flag inversion state must be set on the peer only.
*
* When a peer inherits the configuration from a peer-group and the
* inversion state of the flag differs between peer and peer-group, the
* newly set value must equal to the inverted state of the peer-group.
*/
uint32_t flags_invert;
/*
* Effective array for storing the peer/peer-group flags. In case of a
* peer-group, the peer-specific overrides (see flags_override and
* flags_invert) must be respected.
*/
uint32_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_DYNAMIC_CAPABILITY (1 << 5) /* dynamic capability */
#define PEER_FLAG_DISABLE_CONNECTED_CHECK (1 << 6) /* disable-connected-check */
#define PEER_FLAG_LOCAL_AS_NO_PREPEND (1 << 7) /* local-as no-prepend */
#define PEER_FLAG_LOCAL_AS_REPLACE_AS (1 << 8) /* local-as no-prepend replace-as */
#define PEER_FLAG_DELETE (1 << 9) /* mark the peer for deleting */
#define PEER_FLAG_CONFIG_NODE (1 << 10) /* the node to update configs on */
#define PEER_FLAG_LONESOUL (1 << 11)
#define PEER_FLAG_DYNAMIC_NEIGHBOR (1 << 12) /* dynamic neighbor */
#define PEER_FLAG_CAPABILITY_ENHE (1 << 13) /* Extended next-hop (rfc 5549)*/
#define PEER_FLAG_IFPEER_V6ONLY (1 << 14) /* if-based peer is v6 only */
#define PEER_FLAG_IS_RFAPI_HD (1 << 15) /* attached to rfapi HD */
#define PEER_FLAG_ENFORCE_FIRST_AS (1 << 16) /* enforce-first-as */
#define PEER_FLAG_ROUTEADV (1 << 17) /* route advertise */
#define PEER_FLAG_TIMER (1 << 18) /* keepalive & holdtime */
#define PEER_FLAG_TIMER_CONNECT (1 << 19) /* connect timer */
#define PEER_FLAG_PASSWORD (1 << 20) /* password */
#define PEER_FLAG_LOCAL_AS (1 << 21) /* local-as */
#define PEER_FLAG_UPDATE_SOURCE (1 << 22) /* update-source */
/* outgoing message sent in CEASE_ADMIN_SHUTDOWN notify */
char *tx_shutdown_message;
/* NSF mode (graceful restart) */
uint8_t nsf[AFI_MAX][SAFI_MAX];
/* Peer Per AF flags */
/*
* Please consult the comments for *flags_override*, *flags_invert* and
* *flags* to understand what these three arrays do. The address-family
* specific attributes are being treated the exact same way as global
* peer attributes.
*/
uint32_t af_flags_override[AFI_MAX][SAFI_MAX];
uint32_t af_flags_invert[AFI_MAX][SAFI_MAX];
uint32_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 */
#define PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED (1 << 16) /* leave link-local nexthop unchanged */
#define PEER_FLAG_FORCE_NEXTHOP_SELF (1 << 17) /* next-hop-self force */
#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL (1 << 18) /* remove-private-as all */
#define PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE (1 << 19) /* remove-private-as replace-as */
#define PEER_FLAG_AS_OVERRIDE (1 << 20) /* as-override */
#define PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE (1 << 21) /* remove-private-as all replace-as */
#define PEER_FLAG_WEIGHT (1 << 24) /* weight */
#define PEER_FLAG_ALLOWAS_IN_ORIGIN (1 << 25) /* allowas-in origin */
#define PEER_FLAG_SEND_LARGE_COMMUNITY (1 << 26) /* Send large Communities */
enum bgp_addpath_strat addpath_type[AFI_MAX][SAFI_MAX];
/* MD5 password */
char *password;
/* default-originate route-map. */
struct {
char *name;
struct route_map *map;
} default_rmap[AFI_MAX][SAFI_MAX];
/* Peer status flags. */
uint16_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 */
#define PEER_STATUS_NSF_MODE (1 << 5) /* NSF aware peer */
#define PEER_STATUS_NSF_WAIT (1 << 6) /* wait comeback peer */
/* Peer status af flags (reset in bgp_stop) */
uint16_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_PREFIX_THRESHOLD (1 << 2) /* exceed prefix-threshold */
#define PEER_STATUS_PREFIX_LIMIT (1 << 3) /* exceed prefix-limit */
#define PEER_STATUS_EOR_SEND (1 << 4) /* end-of-rib send to peer */
#define PEER_STATUS_EOR_RECEIVED (1 << 5) /* end-of-rib received from peer */
/* Configured timer values. */
_Atomic uint32_t holdtime;
_Atomic uint32_t keepalive;
_Atomic uint32_t connect;
_Atomic uint32_t routeadv;
/* Timer values. */
_Atomic uint32_t v_start;
_Atomic uint32_t v_connect;
_Atomic uint32_t v_holdtime;
_Atomic uint32_t v_keepalive;
_Atomic uint32_t v_routeadv;
_Atomic uint32_t v_pmax_restart;
_Atomic uint32_t v_gr_restart;
/* Threads. */
struct thread *t_read;
struct thread *t_write;
struct thread *t_start;
struct thread *t_connect_check_r;
struct thread *t_connect_check_w;
struct thread *t_connect;
struct thread *t_holdtime;
struct thread *t_routeadv;
struct thread *t_pmax_restart;
struct thread *t_gr_restart;
struct thread *t_gr_stale;
struct thread *t_generate_updgrp_packets;
struct thread *t_process_packet;
/* Thread flags. */
_Atomic uint32_t thread_flags;
#define PEER_THREAD_WRITES_ON (1 << 0)
#define PEER_THREAD_READS_ON (1 << 1)
#define PEER_THREAD_KEEPALIVES_ON (1 << 2)
/* workqueues */
struct work_queue *clear_node_queue;
#define PEER_TOTAL_RX(peer) \
atomic_load_explicit(&peer->open_in, memory_order_relaxed) \
+ atomic_load_explicit(&peer->update_in, memory_order_relaxed) \
+ atomic_load_explicit(&peer->notify_in, memory_order_relaxed) \
+ atomic_load_explicit(&peer->refresh_in, \
memory_order_relaxed) \
+ atomic_load_explicit(&peer->keepalive_in, \
memory_order_relaxed) \
+ atomic_load_explicit(&peer->dynamic_cap_in, \
memory_order_relaxed)
#define PEER_TOTAL_TX(peer) \
atomic_load_explicit(&peer->open_out, memory_order_relaxed) \
+ atomic_load_explicit(&peer->update_out, \
memory_order_relaxed) \
+ atomic_load_explicit(&peer->notify_out, \
memory_order_relaxed) \
+ atomic_load_explicit(&peer->refresh_out, \
memory_order_relaxed) \
+ atomic_load_explicit(&peer->keepalive_out, \
memory_order_relaxed) \
+ atomic_load_explicit(&peer->dynamic_cap_out, \
memory_order_relaxed)
/* Statistics field */
_Atomic uint32_t open_in; /* Open message input count */
_Atomic uint32_t open_out; /* Open message output count */
_Atomic uint32_t update_in; /* Update message input count */
_Atomic uint32_t update_out; /* Update message ouput count */
_Atomic time_t update_time; /* Update message received time. */
_Atomic uint32_t keepalive_in; /* Keepalive input count */
_Atomic uint32_t keepalive_out; /* Keepalive output count */
_Atomic uint32_t notify_in; /* Notify input count */
_Atomic uint32_t notify_out; /* Notify output count */
_Atomic uint32_t refresh_in; /* Route Refresh input count */
_Atomic uint32_t refresh_out; /* Route Refresh output count */
_Atomic uint32_t dynamic_cap_in; /* Dynamic Capability input count. */
_Atomic uint32_t dynamic_cap_out; /* Dynamic Capability output count. */
/* BGP state count */
uint32_t established; /* Established */
uint32_t dropped; /* Dropped */
/* Update delay related fields */
uint8_t update_delay_over; /* When this is set, BGP is no more waiting
for EOR */
/* Syncronization list and time. */
struct bgp_synchronize *sync[AFI_MAX][SAFI_MAX];
time_t synctime;
/* timestamp when the last UPDATE msg was written */
_Atomic time_t last_write;
/* timestamp when the last msg was written */
_Atomic time_t last_update;
/* Send prefix count. */
unsigned long scount[AFI_MAX][SAFI_MAX];
/* Notify data. */
struct bgp_notify notify;
/* Filter structure. */
struct bgp_filter filter[AFI_MAX][SAFI_MAX];
/*
* Parallel array to filter that indicates whether each filter
* originates from a peer-group or if it is config that is specific to
* this individual peer. If a filter is set independent of the
* peer-group the appropriate bit should be set here. If this peer is a
* peer-group, this memory region should be all zeros. The assumption
* is that the default state for all flags is unset. Due to filters
* having a direction (e.g. in/out/...), this array has a third
* dimension for storing the overrides independently per direction.
*
* Notes:
* - if a filter for an individual peer is unset, the corresponding
* override flag is unset and the peer is considered to be back in
* sync with the peer-group.
* - This does *not* contain the filter values, rather it contains
* whether the filter in filter (struct bgp_filter) is peer-specific.
*/
uint8_t filter_override[AFI_MAX][SAFI_MAX][(FILTER_MAX > RMAP_MAX)
? FILTER_MAX
: RMAP_MAX];
#define PEER_FT_DISTRIBUTE_LIST (1 << 0) /* distribute-list */
#define PEER_FT_FILTER_LIST (1 << 1) /* filter-list */
#define PEER_FT_PREFIX_LIST (1 << 2) /* prefix-list */
#define PEER_FT_ROUTE_MAP (1 << 3) /* route-map */
#define PEER_FT_UNSUPPRESS_MAP (1 << 4) /* unsuppress-map */
/* ORF Prefix-list */
struct prefix_list *orf_plist[AFI_MAX][SAFI_MAX];
/* Text description of last attribute rcvd */
char rcvd_attr_str[BUFSIZ];
/* Track if we printed the attribute in debugs */
int rcvd_attr_printed;
/* Prefix count. */
unsigned long pcount[AFI_MAX][SAFI_MAX];
/* Max prefix count. */
unsigned long pmax[AFI_MAX][SAFI_MAX];
uint8_t pmax_threshold[AFI_MAX][SAFI_MAX];
uint16_t pmax_restart[AFI_MAX][SAFI_MAX];
#define MAXIMUM_PREFIX_THRESHOLD_DEFAULT 75
/* allowas-in. */
char allowas_in[AFI_MAX][SAFI_MAX];
/* weight */
unsigned long weight[AFI_MAX][SAFI_MAX];
/* peer reset cause */
char last_reset;
#define PEER_DOWN_RID_CHANGE 1 /* bgp router-id command */
#define PEER_DOWN_REMOTE_AS_CHANGE 2 /* neighbor remote-as command */
#define PEER_DOWN_LOCAL_AS_CHANGE 3 /* neighbor local-as command */
#define PEER_DOWN_CLID_CHANGE 4 /* bgp cluster-id command */
#define PEER_DOWN_CONFED_ID_CHANGE 5 /* bgp confederation identifier command */
#define PEER_DOWN_CONFED_PEER_CHANGE 6 /* bgp confederation peer command */
#define PEER_DOWN_RR_CLIENT_CHANGE 7 /* neighbor route-reflector-client command */
#define PEER_DOWN_RS_CLIENT_CHANGE 8 /* neighbor route-server-client command */
#define PEER_DOWN_UPDATE_SOURCE_CHANGE 9 /* neighbor update-source command */
#define PEER_DOWN_AF_ACTIVATE 10 /* neighbor activate command */
#define PEER_DOWN_USER_SHUTDOWN 11 /* neighbor shutdown command */
#define PEER_DOWN_USER_RESET 12 /* clear ip bgp command */
#define PEER_DOWN_NOTIFY_RECEIVED 13 /* notification received */
#define PEER_DOWN_NOTIFY_SEND 14 /* notification send */
#define PEER_DOWN_CLOSE_SESSION 15 /* tcp session close */
#define PEER_DOWN_NEIGHBOR_DELETE 16 /* neghbor delete */
#define PEER_DOWN_RMAP_BIND 17 /* neghbor peer-group command */
#define PEER_DOWN_RMAP_UNBIND 18 /* no neighbor peer-group command */
#define PEER_DOWN_CAPABILITY_CHANGE 19 /* neighbor capability command */
#define PEER_DOWN_PASSIVE_CHANGE 20 /* neighbor passive command */
#define PEER_DOWN_MULTIHOP_CHANGE 21 /* neighbor multihop command */
#define PEER_DOWN_NSF_CLOSE_SESSION 22 /* NSF tcp session close */
#define PEER_DOWN_V6ONLY_CHANGE 23 /* if-based peering v6only toggled */
#define PEER_DOWN_BFD_DOWN 24 /* BFD down */
#define PEER_DOWN_IF_DOWN 25 /* Interface down */
#define PEER_DOWN_NBR_ADDR_DEL 26 /* Peer address lost */
unsigned long last_reset_cause_size;
uint8_t last_reset_cause[BGP_MAX_PACKET_SIZE];
/* The kind of route-map Flags.*/
uint8_t rmap_type;
#define PEER_RMAP_TYPE_IN (1 << 0) /* neighbor route-map in */
#define PEER_RMAP_TYPE_OUT (1 << 1) /* neighbor route-map out */
#define PEER_RMAP_TYPE_NETWORK (1 << 2) /* network route-map */
#define PEER_RMAP_TYPE_REDISTRIBUTE (1 << 3) /* redistribute route-map */
#define PEER_RMAP_TYPE_DEFAULT (1 << 4) /* default-originate route-map */
#define PEER_RMAP_TYPE_NOSET (1 << 5) /* not allow to set commands */
#define PEER_RMAP_TYPE_IMPORT (1 << 6) /* neighbor route-map import */
#define PEER_RMAP_TYPE_EXPORT (1 << 7) /* neighbor route-map export */
/* peer specific BFD information */
struct bfd_info *bfd_info;
/* hostname and domainname advertised by host */
char *hostname;
char *domainname;
QOBJ_FIELDS
};
DECLARE_QOBJ_TYPE(peer)
/* Inherit peer attribute from peer-group. */
#define PEER_ATTR_INHERIT(peer, group, attr) \
((peer)->attr = (group)->conf->attr)
#define PEER_STR_ATTR_INHERIT(peer, group, attr, mt) \
do { \
if ((peer)->attr) \
XFREE(mt, (peer)->attr); \
if ((group)->conf->attr) \
(peer)->attr = XSTRDUP(mt, (group)->conf->attr); \
else \
(peer)->attr = NULL; \
} while (0)
#define PEER_SU_ATTR_INHERIT(peer, group, attr) \
do { \
if ((peer)->attr) \
sockunion_free((peer)->attr); \
if ((group)->conf->attr) \
(peer)->attr = sockunion_dup((group)->conf->attr); \
else \
(peer)->attr = NULL; \
} while (0)
/* Check if suppress start/restart of sessions to peer. */
#define BGP_PEER_START_SUPPRESSED(P) \
(CHECK_FLAG((P)->flags, PEER_FLAG_SHUTDOWN) \
|| CHECK_FLAG((P)->sflags, PEER_STATUS_PREFIX_OVERFLOW))
#define PEER_PASSWORD_MINLEN (1)
#define PEER_PASSWORD_MAXLEN (80)
/* This structure's member directly points incoming packet data
stream. */
struct bgp_nlri {
/* AFI. */
uint16_t afi; /* iana_afi_t */
/* SAFI. */
uint8_t safi; /* iana_safi_t */
/* Pointer to NLRI byte stream. */
uint8_t *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 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
#define BGP_ATTR_PMSI_TUNNEL 22
#define BGP_ATTR_ENCAP 23
#define BGP_ATTR_LARGE_COMMUNITIES 32
#define BGP_ATTR_PREFIX_SID 40
#if ENABLE_BGP_VNC_ATTR
#define BGP_ATTR_VNC 255
#endif
/* 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_SUBCODE_UNSPECIFIC 0
/* 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
/* BGP_NOTIFY_OPEN_ERR sub codes. */
#define BGP_NOTIFY_OPEN_MALFORMED_ATTR 0
#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
/* 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
/* BGP_NOTIFY_CEASE sub codes (RFC 4486). */
#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_COLLISION_RESOLUTION 7
#define BGP_NOTIFY_CEASE_OUT_OF_RESOURCE 8
/* 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
/* BGP finite state machine status. */
#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. */
/* note: the DFLT_ ones depend on compile-time "defaults" selection */
#define BGP_INIT_START_TIMER 1
#define BGP_DEFAULT_HOLDTIME DFLT_BGP_HOLDTIME
#define BGP_DEFAULT_KEEPALIVE DFLT_BGP_KEEPALIVE
#define BGP_DEFAULT_EBGP_ROUTEADV 0
#define BGP_DEFAULT_IBGP_ROUTEADV 0
#define BGP_DEFAULT_CONNECT_RETRY DFLT_BGP_TIMERS_CONNECT
/* BGP default local preference. */
#define BGP_DEFAULT_LOCAL_PREF 100
/* BGP local-preference to send when 'bgp graceful-shutdown'
* is configured */
#define BGP_GSHUT_LOCAL_PREF 0
/* BGP default subgroup packet queue max . */
#define BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX 40
/* BGP graceful restart */
#define BGP_DEFAULT_RESTART_TIME 120
#define BGP_DEFAULT_STALEPATH_TIME 360
/* 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 */
/* BGP Dynamic Neighbors feature */
#define BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT 100
#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MIN 1
#define BGP_DYNAMIC_NEIGHBORS_LIMIT_MAX 5000
/* 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)->curr)
#define BGP_INPUT_PNT(P) (stream_pnt(BGP_INPUT(P)))
#define BGP_IS_VALID_STATE_FOR_NOTIF(S) \
(((S) == OpenSent) || ((S) == OpenConfirm) || ((S) == Established))
/* 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_NO_REMOTE_AS -7
#define BGP_ERR_PEER_GROUP_CANT_CHANGE -8
#define BGP_ERR_PEER_GROUP_MISMATCH -9
#define BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT -10
#define BGP_ERR_MULTIPLE_INSTANCE_NOT_SET -11
#define BGP_ERR_AS_MISMATCH -12
#define BGP_ERR_PEER_FLAG_CONFLICT -13
#define BGP_ERR_PEER_GROUP_SHUTDOWN -14
#define BGP_ERR_PEER_FILTER_CONFLICT -15
#define BGP_ERR_NOT_INTERNAL_PEER -16
#define BGP_ERR_REMOVE_PRIVATE_AS -17
#define BGP_ERR_AF_UNCONFIGURED -18
#define BGP_ERR_SOFT_RECONFIG_UNCONFIGURED -19
#define BGP_ERR_INSTANCE_MISMATCH -20
#define BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP -21
#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS -22
#define BGP_ERR_TCPSIG_FAILED -23
#define BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK -24
#define BGP_ERR_NO_IBGP_WITH_TTLHACK -25
#define BGP_ERR_NO_INTERFACE_CONFIG -26
#define BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS -27
#define BGP_ERR_AS_OVERRIDE -28
#define BGP_ERR_INVALID_DYNAMIC_NEIGHBORS_LIMIT -29
#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_EXISTS -30
#define BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND -31
#define BGP_ERR_INVALID_FOR_DYNAMIC_PEER -32
#define BGP_ERR_MAX -33
#define BGP_ERR_INVALID_FOR_DIRECT_PEER -34
#define BGP_ERR_PEER_SAFI_CONFLICT -35
/*
* Enumeration of different policy kinds a peer can be configured with.
*/
typedef enum {
BGP_POLICY_ROUTE_MAP,
BGP_POLICY_FILTER_LIST,
BGP_POLICY_PREFIX_LIST,
BGP_POLICY_DISTRIBUTE_LIST,
} bgp_policy_type_e;
/* peer_flag_change_type. */
enum peer_change_type {
peer_change_none,
peer_change_reset,
peer_change_reset_in,
peer_change_reset_out,
};
extern struct bgp_master *bm;
extern unsigned int multipath_num;
/* Prototypes. */
extern void bgp_terminate(void);
extern void bgp_reset(void);
extern time_t bgp_clock(void);
extern void bgp_zclient_reset(void);
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 bgp *bgp_lookup_by_vrf_id(vrf_id_t);
extern struct peer *peer_lookup(struct bgp *, union sockunion *);
extern struct peer *peer_lookup_by_conf_if(struct bgp *, const char *);
extern struct peer *peer_lookup_by_hostname(struct bgp *, const char *);
extern void bgp_peer_conf_if_to_su_update(struct peer *);
extern int peer_group_listen_range_del(struct peer_group *, struct prefix *);
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_create_bind_dynamic_neighbor(struct bgp *,
union sockunion *,
struct peer_group *);
extern struct prefix *
peer_group_lookup_dynamic_neighbor_range(struct peer_group *, struct prefix *);
extern struct peer_group *peer_group_lookup_dynamic_neighbor(struct bgp *,
struct prefix *,
struct prefix **);
extern struct peer *peer_lookup_dynamic_neighbor(struct bgp *,
union sockunion *);
/*
* Peers are incredibly easy to memory leak
* due to the various ways that they are actually used
* Provide some functionality to debug locks and unlocks
*/
extern struct peer *peer_lock_with_caller(const char *, struct peer *);
extern struct peer *peer_unlock_with_caller(const char *, struct peer *);
#define peer_unlock(A) peer_unlock_with_caller(__FUNCTION__, (A))
#define peer_lock(B) peer_lock_with_caller(__FUNCTION__, (B))
extern bgp_peer_sort_t peer_sort(struct peer *peer);
extern int peer_active(struct peer *);
extern int peer_active_nego(struct peer *);
extern void bgp_recalculate_all_bestpaths(struct bgp *bgp);
extern struct peer *peer_create(union sockunion *, const char *, struct bgp *,
as_t, as_t, int, afi_t, safi_t,
struct peer_group *);
extern struct peer *peer_create_accept(struct bgp *);
extern void peer_xfer_config(struct peer *dst, struct peer *src);
extern char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json,
json_object *json);
extern int bgp_config_write(struct vty *);
extern void bgp_master_init(struct thread_master *master);
extern void bgp_init(unsigned short instance);
extern void bgp_pthreads_run(void);
extern void bgp_pthreads_finish(void);
extern void bgp_route_map_init(void);
extern void bgp_session_reset(struct peer *);
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 *, enum bgp_instance_type);
extern void bgp_instance_up(struct bgp *);
extern void bgp_instance_down(struct bgp *);
extern int bgp_delete(struct bgp *);
extern int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf,
vrf_id_t old_vrf_id, bool create);
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_router_id_zebra_bump(vrf_id_t, const struct prefix *);
extern int bgp_router_id_static_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 *, uint32_t keepalive, uint32_t holdtime);
extern int bgp_timers_unset(struct bgp *);
extern int bgp_default_local_preference_set(struct bgp *, uint32_t);
extern int bgp_default_local_preference_unset(struct bgp *);
extern int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t);
extern int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp);
extern int bgp_listen_limit_set(struct bgp *, int);
extern int bgp_listen_limit_unset(struct bgp *);
extern int bgp_update_delay_active(struct bgp *);
extern int bgp_update_delay_configured(struct bgp *);
extern int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi);
extern void peer_as_change(struct peer *, as_t, int);
extern int peer_remote_as(struct bgp *, union sockunion *, const char *, as_t *,
int, afi_t, safi_t);
extern int peer_group_remote_as(struct bgp *, const char *, as_t *, int);
extern int peer_delete(struct peer *peer);
extern int peer_group_delete(struct peer_group *);
extern int peer_group_remote_as_delete(struct peer_group *);
extern int peer_group_listen_range_add(struct peer_group *, struct prefix *);
extern int peer_activate(struct peer *, afi_t, safi_t);
extern int peer_deactivate(struct peer *, afi_t, safi_t);
extern int peer_afc_set(struct peer *, afi_t, safi_t, int);
extern int peer_group_bind(struct bgp *, union sockunion *, struct peer *,
struct peer_group *, as_t *);
extern int peer_flag_set(struct peer *, uint32_t);
extern int peer_flag_unset(struct peer *, uint32_t);
extern void peer_flag_inherit(struct peer *peer, uint32_t flag);
extern int peer_af_flag_set(struct peer *, afi_t, safi_t, uint32_t);
extern int peer_af_flag_unset(struct peer *, afi_t, safi_t, uint32_t);
extern int peer_af_flag_check(struct peer *, afi_t, safi_t, uint32_t);
extern void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi,
uint32_t flag);
extern void peer_change_action(struct peer *peer, afi_t afi, safi_t safi,
enum peer_change_type type);
extern int peer_ebgp_multihop_set(struct peer *, int);
extern int peer_ebgp_multihop_unset(struct peer *);
extern int is_ebgp_multihop_configured(struct peer *peer);
extern int peer_description_set(struct peer *, const 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 *, const union sockunion *);
extern int peer_update_source_unset(struct peer *);
extern int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi,
const char *rmap,
struct route_map *route_map);
extern int peer_default_originate_unset(struct peer *, afi_t, safi_t);
extern int peer_port_set(struct peer *, uint16_t);
extern int peer_port_unset(struct peer *);
extern int peer_weight_set(struct peer *, afi_t, safi_t, uint16_t);
extern int peer_weight_unset(struct peer *, afi_t, safi_t);
extern int peer_timers_set(struct peer *, uint32_t keepalive,
uint32_t holdtime);
extern int peer_timers_unset(struct peer *);
extern int peer_timers_connect_set(struct peer *, uint32_t);
extern int peer_timers_connect_unset(struct peer *);
extern int peer_advertise_interval_set(struct peer *, uint32_t);
extern int peer_advertise_interval_unset(struct peer *);
extern void peer_interface_set(struct peer *, const char *);
extern void 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, int);
extern int peer_allowas_in_unset(struct peer *, afi_t, safi_t);
extern int peer_local_as_set(struct peer *, as_t, int, 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 *peer, afi_t afi, safi_t safi, int,
const char *name, struct route_map *route_map);
extern int peer_route_map_unset(struct peer *, afi_t, safi_t, int);
extern int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi,
const char *name,
struct route_map *route_map);
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, uint32_t,
uint8_t, int, uint16_t);
extern int peer_maximum_prefix_unset(struct peer *, afi_t, safi_t);
extern int peer_clear(struct peer *, struct listnode **);
extern int peer_clear_soft(struct peer *, afi_t, safi_t, enum bgp_clear_type);
extern int peer_ttl_security_hops_set(struct peer *, int);
extern int peer_ttl_security_hops_unset(struct peer *);
extern int peer_tx_shutdown_message_set(struct peer *, const char *msg);
extern int peer_tx_shutdown_message_unset(struct peer *);
extern int bgp_route_map_update_timer(struct thread *thread);
extern void bgp_route_map_terminate(void);
extern int peer_cmp(struct peer *p1, struct peer *p2);
extern int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi,
afi_t *afi, safi_t *safi);
extern int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi,
iana_afi_t *pkt_afi,
iana_safi_t *pkt_safi);
extern struct peer_af *peer_af_create(struct peer *, afi_t, safi_t);
extern struct peer_af *peer_af_find(struct peer *, afi_t, safi_t);
extern int peer_af_delete(struct peer *, afi_t, safi_t);
extern void bgp_close(void);
extern void bgp_free(struct bgp *);
static inline struct bgp *bgp_lock(struct bgp *bgp)
{
bgp->lock++;
return bgp;
}
static inline void bgp_unlock(struct bgp *bgp)
{
assert(bgp->lock > 0);
if (--bgp->lock == 0)
bgp_free(bgp);
}
static inline int afindex(afi_t afi, safi_t safi)
{
switch (afi) {
case AFI_IP:
switch (safi) {
case SAFI_UNICAST:
return BGP_AF_IPV4_UNICAST;
break;
case SAFI_MULTICAST:
return BGP_AF_IPV4_MULTICAST;
break;
case SAFI_LABELED_UNICAST:
return BGP_AF_IPV4_LBL_UNICAST;
break;
case SAFI_MPLS_VPN:
return BGP_AF_IPV4_VPN;
break;
case SAFI_ENCAP:
return BGP_AF_IPV4_ENCAP;
break;
case SAFI_FLOWSPEC:
return BGP_AF_IPV4_FLOWSPEC;
default:
return BGP_AF_MAX;
break;
}
break;
case AFI_IP6:
switch (safi) {
case SAFI_UNICAST:
return BGP_AF_IPV6_UNICAST;
break;
case SAFI_MULTICAST:
return BGP_AF_IPV6_MULTICAST;
break;
case SAFI_LABELED_UNICAST:
return BGP_AF_IPV6_LBL_UNICAST;
break;
case SAFI_MPLS_VPN:
return BGP_AF_IPV6_VPN;
break;
case SAFI_ENCAP:
return BGP_AF_IPV6_ENCAP;
break;
case SAFI_FLOWSPEC:
return BGP_AF_IPV6_FLOWSPEC;
default:
return BGP_AF_MAX;
break;
}
break;
case AFI_L2VPN:
switch (safi) {
case SAFI_EVPN:
return BGP_AF_L2VPN_EVPN;
break;
default:
return BGP_AF_MAX;
break;
}
default:
return BGP_AF_MAX;
break;
}
}
/* If the peer is not a peer-group but is bound to a peer-group return 1 */
static inline int peer_group_active(struct peer *peer)
{
if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) && peer->group)
return 1;
return 0;
}
/* If peer is negotiated at least one address family return 1. */
static inline int peer_afi_active_nego(const struct peer *peer, afi_t afi)
{
if (peer->afc_nego[afi][SAFI_UNICAST]
|| peer->afc_nego[afi][SAFI_MULTICAST]
|| peer->afc_nego[afi][SAFI_LABELED_UNICAST]
|| peer->afc_nego[afi][SAFI_MPLS_VPN]
|| peer->afc_nego[afi][SAFI_ENCAP]
|| peer->afc_nego[afi][SAFI_FLOWSPEC]
|| peer->afc_nego[afi][SAFI_EVPN])
return 1;
return 0;
}
/* If at least one address family activated for group, return 1. */
static inline int peer_group_af_configured(struct peer_group *group)
{
struct peer *peer = group->conf;
if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST]
|| peer->afc[AFI_IP][SAFI_LABELED_UNICAST]
|| peer->afc[AFI_IP][SAFI_FLOWSPEC]
|| peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP]
|| peer->afc[AFI_IP6][SAFI_UNICAST]
|| peer->afc[AFI_IP6][SAFI_MULTICAST]
|| peer->afc[AFI_IP6][SAFI_LABELED_UNICAST]
|| peer->afc[AFI_IP6][SAFI_MPLS_VPN]
|| peer->afc[AFI_IP6][SAFI_ENCAP]
|| peer->afc[AFI_IP6][SAFI_FLOWSPEC]
|| peer->afc[AFI_L2VPN][SAFI_EVPN])
return 1;
return 0;
}
static inline char *timestamp_string(time_t ts)
{
time_t tbuf;
tbuf = time(NULL) - (bgp_clock() - ts);
return ctime(&tbuf);
}
static inline int peer_established(struct peer *peer)
{
if (peer->status == Established)
return 1;
return 0;
}
static inline int peer_dynamic_neighbor(struct peer *peer)
{
return (CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) ? 1 : 0;
}
static inline int peer_cap_enhe(struct peer *peer, afi_t afi, safi_t safi)
{
return (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ENHE_AF_NEGO));
}
/* Lookup VRF for BGP instance based on its type. */
static inline struct vrf *bgp_vrf_lookup_by_instance_type(struct bgp *bgp)
{
struct vrf *vrf;
if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)
vrf = vrf_lookup_by_id(VRF_DEFAULT);
else if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF)
vrf = vrf_lookup_by_name(bgp->name);
else
vrf = NULL;
return vrf;
}
/* Link BGP instance to VRF. */
static inline void bgp_vrf_link(struct bgp *bgp, struct vrf *vrf)
{
bgp->vrf_id = vrf->vrf_id;
if (vrf->info != (void *)bgp)
vrf->info = (void *)bgp_lock(bgp);
}
/* Unlink BGP instance from VRF. */
static inline void bgp_vrf_unlink(struct bgp *bgp, struct vrf *vrf)
{
if (vrf->info == (void *)bgp) {
vrf->info = NULL;
bgp_unlock(bgp);
}
bgp->vrf_id = VRF_UNKNOWN;
}
extern void bgp_update_redist_vrf_bitmaps(struct bgp *, vrf_id_t);
/* For benefit of rfapi */
extern struct peer *peer_new(struct bgp *bgp);
#endif /* _QUAGGA_BGPD_H */