/* 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 #include "hook.h" #include "frr_pthread.h" #include "lib/json.h" #include "vrf.h" #include "vty.h" #include "iana_afi.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++) #define FOREACH_SAFI(safi) \ 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; /* The Mac table */ struct hash *self_mac_hash; /* BGP start time. */ time_t start_time; /* Various BGP global configuration. */ uint8_t options; #define BGP_OPT_NO_FIB (1 << 0) #define BGP_OPT_NO_LISTEN (1 << 1) #define BGP_OPT_NO_ZEBRA (1 << 2) 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; /* BGP-EVPN VRF ID. Defaults to default VRF (if any) */ struct bgp* bgp_evpn; 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_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) #define BGP_FLAG_DELETE_IN_PROGRESS (1 << 22) /* 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) /* BGP per AF peer count */ uint32_t af_peer_count[AFI_MAX][SAFI_MAX]; /* 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 * <----- pbr_rule k * * - 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_rule_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; /* RFC 8212 - prevent route leaks. */ int ebgp_requires_policy; #define DEFAULT_EBGP_POLICY_DISABLED 0 #define DEFAULT_EBGP_POLICY_ENABLED 1 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; /* SVI associated with the L3-VNI corresponding to this vrf */ ifindex_t l3vni_svi_ifindex; /* 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) DECLARE_HOOK(bgp_inst_delete, (struct bgp *bgp), (bgp)) DECLARE_HOOK(bgp_inst_config_write, (struct bgp *bgp, struct vty *vty), (bgp, vty)) #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_UNSPECIFIED, BGP_PEER_IBGP, 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. */ uint32_t stat_pfx_filter; uint32_t stat_pfx_aspath_loop; uint32_t stat_pfx_originator_loop; uint32_t stat_pfx_cluster_loop; uint32_t stat_pfx_nh_invalid; uint32_t stat_pfx_dup_withdraw; uint32_t stat_upd_7606; /* RFC7606: treat-as-withdraw */ /* 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 */ uint8_t 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 */ size_t 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_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_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 bgp *bgp_get_evpn(void); extern void bgp_set_evpn(struct bgp *bgp); 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_unset_redist_vrf_bitmaps(struct bgp *, vrf_id_t); /* For benefit of rfapi */ extern struct peer *peer_new(struct bgp *bgp); extern struct peer *peer_lookup_in_view(struct vty *vty, struct bgp *bgp, const char *ip_str, bool use_json); #endif /* _QUAGGA_BGPD_H */