// SPDX-License-Identifier: GPL-2.0-or-later /* BGP routing information base * Copyright (C) 1996, 97, 98, 2000 Kunihiro Ishiguro */ #ifndef _QUAGGA_BGP_ROUTE_H #define _QUAGGA_BGP_ROUTE_H #include #include "hook.h" #include "queue.h" #include "nexthop.h" #include "bgp_table.h" #include "bgp_addpath_types.h" #include "bgp_rpki.h" struct bgp_nexthop_cache; struct bgp_route_evpn; enum bgp_show_type { bgp_show_type_normal, bgp_show_type_regexp, bgp_show_type_prefix_list, bgp_show_type_access_list, bgp_show_type_filter_list, bgp_show_type_route_map, bgp_show_type_neighbor, bgp_show_type_cidr_only, bgp_show_type_prefix_longer, bgp_show_type_community_alias, bgp_show_type_community_all, bgp_show_type_community, bgp_show_type_community_exact, bgp_show_type_community_list, bgp_show_type_community_list_exact, bgp_show_type_lcommunity_all, bgp_show_type_lcommunity, bgp_show_type_lcommunity_exact, bgp_show_type_lcommunity_list, bgp_show_type_lcommunity_list_exact, bgp_show_type_flap_statistics, bgp_show_type_flap_neighbor, bgp_show_type_dampend_paths, bgp_show_type_damp_neighbor, bgp_show_type_detail, bgp_show_type_rpki, bgp_show_type_prefix_version, bgp_show_type_self_originated, }; enum bgp_show_adj_route_type { bgp_show_adj_route_advertised, bgp_show_adj_route_received, bgp_show_adj_route_filtered, bgp_show_adj_route_bestpath, }; #define BGP_SHOW_SCODE_HEADER \ "Status codes: s suppressed, d damped, " \ "h history, * valid, > best, = multipath,\n" \ " i internal, r RIB-failure, S Stale, R Removed\n" #define BGP_SHOW_OCODE_HEADER \ "Origin codes: i - IGP, e - EGP, ? - incomplete\n" #define BGP_SHOW_NCODE_HEADER "Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self\n" #define BGP_SHOW_RPKI_HEADER \ "RPKI validation codes: V valid, I invalid, N Not found\n\n" #define BGP_SHOW_HEADER " Network Next Hop Metric LocPrf Weight Path\n" #define BGP_SHOW_HEADER_WIDE " Network Next Hop Metric LocPrf Weight Path\n" /* Maximum number of labels we can process or send with a prefix. We * really do only 1 for MPLS (BGP-LU) but we can do 2 for EVPN-VxLAN. */ #define BGP_MAX_LABELS 2 /* Maximum number of sids we can process or send with a prefix. */ #define BGP_MAX_SIDS 6 /* Maximum buffer length for storing BGP best path selection reason */ #define BGP_MAX_SELECTION_REASON_STR_BUF 32 /* Error codes for handling NLRI */ #define BGP_NLRI_PARSE_OK 0 #define BGP_NLRI_PARSE_ERROR_PREFIX_OVERFLOW -1 #define BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW -2 #define BGP_NLRI_PARSE_ERROR_PREFIX_LENGTH -3 #define BGP_NLRI_PARSE_ERROR_PACKET_LENGTH -4 #define BGP_NLRI_PARSE_ERROR_LABEL_LENGTH -5 #define BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE -6 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE -7 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE -8 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE -9 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE -10 #define BGP_NLRI_PARSE_ERROR_FLOWSPEC_IPV6_NOT_SUPPORTED -11 #define BGP_NLRI_PARSE_ERROR_FLOWSPEC_NLRI_SIZELIMIT -12 #define BGP_NLRI_PARSE_ERROR_FLOWSPEC_BAD_FORMAT -13 #define BGP_NLRI_PARSE_ERROR_ADDRESS_FAMILY -14 #define BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE -15 #define BGP_NLRI_PARSE_ERROR -32 /* 1. local MAC-IP/type-2 paths in the VNI routing table are linked to the * destination ES * 2. remote MAC-IP paths in the global routing table are linked to the * destination ES */ struct bgp_path_es_info { /* back pointer to the route */ struct bgp_path_info *pi; vni_t vni; /* destination ES */ struct bgp_evpn_es *es; /* memory used for linking the path to the destination ES */ struct listnode es_listnode; uint8_t flags; /* Path is linked to the VNI list */ #define BGP_EVPN_PATH_ES_INFO_VNI_LIST (1 << 0) /* Path is linked to the global list */ #define BGP_EVPN_PATH_ES_INFO_GLOBAL_LIST (1 << 1) }; /* IP paths imported into the VRF from an EVPN route source * are linked to the nexthop/VTEP IP */ struct bgp_path_evpn_nh_info { /* back pointer to the route */ struct bgp_path_info *pi; struct bgp_evpn_nh *nh; /* memory used for linking the path to the nexthop */ struct listnode nh_listnode; }; struct bgp_path_mh_info { struct bgp_path_es_info *es_info; struct bgp_path_evpn_nh_info *nh_info; }; struct bgp_sid_info { struct in6_addr sid; uint8_t loc_block_len; uint8_t loc_node_len; uint8_t func_len; uint8_t arg_len; uint8_t transposition_len; uint8_t transposition_offset; }; /* new structure for EVPN */ struct bgp_path_info_extra_evpn { #define BGP_EVPN_MACIP_TYPE_SVI_IP (1 << 0) /* af specific flags */ uint16_t af_flags; union { struct ethaddr mac; /* MAC set here for VNI IP table */ struct ipaddr ip; /* IP set here for VNI MAC table */ } vni_info; /* Destination Ethernet Segment links for EVPN MH */ struct bgp_path_mh_info *mh_info; }; /* new structure for flowspec*/ struct bgp_path_info_extra_fs { /* presence of FS pbr firewall based entry */ struct list *bgp_fs_pbr; /* presence of FS pbr iprule based entry */ struct list *bgp_fs_iprule; }; /* new structure for vrfleak*/ struct bgp_path_info_extra_vrfleak { void *parent; /* parent from global table */ /* * Original bgp instance for imported routes. Needed for: * 1. Find all routes from a specific vrf for deletion * 2. vrf context of original nexthop * * Store pointer to bgp instance rather than bgp->vrf_id because * bgp->vrf_id is not always valid (or may change?). * * Set to NULL if route is not imported from another bgp instance. */ struct bgp *bgp_orig; /* * Original bgp session to know if the session is a * connected EBGP session or not */ struct peer *peer_orig; /* * Nexthop in context of original bgp instance. Needed * for label resolution of core mpls routes exported to a vrf. * Set nexthop_orig.family to 0 if not valid. */ struct prefix nexthop_orig; }; #ifdef ENABLE_BGP_VNC struct bgp_path_info_extra_vnc { union { struct { void *rfapi_handle; /* export: NVE advertising this route */ struct list *local_nexthops; /* optional, for static routes */ } export; struct { struct event *timer; void *hme; /* encap monitor, if this is a VPN route */ struct prefix_rd rd; /* import: route's route-distinguisher */ uint8_t un_family; /* family of cached un address, 0 if unset */ union { struct in_addr addr4; struct in6_addr addr6; } un; /* cached un address */ time_t create_time; struct prefix aux_prefix; /* AFI_L2VPN: the IP addr, if family set */ } import; } vnc; }; #endif /* Ancillary information to struct bgp_path_info, * used for uncommonly used data (aggregation, MPLS, etc.) * and lazily allocated to save memory. */ struct bgp_path_info_extra { /* Pointer to dampening structure. */ struct bgp_damp_info *damp_info; /** List of aggregations that suppress this path. */ struct list *aggr_suppressors; /* Nexthop reachability check. */ uint32_t igpmetric; /* MPLS label(s) - VNI(s) for EVPN-VxLAN */ mpls_label_t label[BGP_MAX_LABELS]; uint32_t num_labels; /* timestamp of the rib installation */ time_t bgp_rib_uptime; /*For EVPN*/ struct bgp_path_info_extra_evpn *evpn; #ifdef ENABLE_BGP_VNC struct bgp_path_info_extra_vnc *vnc; #endif /* For flowspec*/ struct bgp_path_info_extra_fs *flowspec; /* For vrf leaking*/ struct bgp_path_info_extra_vrfleak *vrfleak; }; struct bgp_mplsvpn_label_nh { /* For nexthop per label linked list */ LIST_ENTRY(bgp_path_info) label_nh_thread; /* Back pointer to the bgp label per nexthop structure */ struct bgp_label_per_nexthop_cache *label_nexthop_cache; }; struct bgp_mplsvpn_nh_label_bind { /* For mplsvpn nexthop label bind linked list */ LIST_ENTRY(bgp_path_info) nh_label_bind_thread; /* Back pointer to the bgp mplsvpn nexthop label bind structure */ struct bgp_mplsvpn_nh_label_bind_cache *nh_label_bind_cache; }; struct bgp_path_info { /* For linked list. */ struct bgp_path_info *next; struct bgp_path_info *prev; /* For nexthop linked list */ LIST_ENTRY(bgp_path_info) nh_thread; /* Back pointer to the prefix node */ struct bgp_dest *net; /* Back pointer to the nexthop structure */ struct bgp_nexthop_cache *nexthop; /* Peer structure. */ struct peer *peer; /* Attribute structure. */ struct attr *attr; /* Extra information */ struct bgp_path_info_extra *extra; /* Multipath information */ struct bgp_path_info_mpath *mpath; /* Uptime. */ time_t uptime; /* reference count */ int lock; /* BGP information status. */ uint32_t flags; #define BGP_PATH_IGP_CHANGED (1 << 0) #define BGP_PATH_DAMPED (1 << 1) #define BGP_PATH_HISTORY (1 << 2) #define BGP_PATH_SELECTED (1 << 3) #define BGP_PATH_VALID (1 << 4) #define BGP_PATH_ATTR_CHANGED (1 << 5) #define BGP_PATH_DMED_CHECK (1 << 6) #define BGP_PATH_DMED_SELECTED (1 << 7) #define BGP_PATH_STALE (1 << 8) #define BGP_PATH_REMOVED (1 << 9) #define BGP_PATH_COUNTED (1 << 10) #define BGP_PATH_MULTIPATH (1 << 11) #define BGP_PATH_MULTIPATH_CHG (1 << 12) #define BGP_PATH_RIB_ATTR_CHG (1 << 13) #define BGP_PATH_ANNC_NH_SELF (1 << 14) #define BGP_PATH_LINK_BW_CHG (1 << 15) #define BGP_PATH_ACCEPT_OWN (1 << 16) #define BGP_PATH_MPLSVPN_LABEL_NH (1 << 17) #define BGP_PATH_MPLSVPN_NH_LABEL_BIND (1 << 18) /* BGP route type. This can be static, RIP, OSPF, BGP etc. */ uint8_t type; /* When above type is BGP. This sub type specify BGP sub type information. */ uint8_t sub_type; #define BGP_ROUTE_NORMAL 0 #define BGP_ROUTE_STATIC 1 #define BGP_ROUTE_AGGREGATE 2 #define BGP_ROUTE_REDISTRIBUTE 3 #ifdef ENABLE_BGP_VNC # define BGP_ROUTE_RFP 4 #endif #define BGP_ROUTE_IMPORTED 5 /* from another bgp instance/safi */ unsigned short instance; /* Addpath identifiers */ uint32_t addpath_rx_id; struct bgp_addpath_info_data tx_addpath; union { struct bgp_mplsvpn_label_nh blnc; struct bgp_mplsvpn_nh_label_bind bmnc; } mplsvpn; }; /* Structure used in BGP path selection */ struct bgp_path_info_pair { struct bgp_path_info *old; struct bgp_path_info *new; }; /* BGP static route configuration. */ struct bgp_static { /* Backdoor configuration. */ int backdoor; /* Label index configuration; applies to LU prefixes. */ uint32_t label_index; #define BGP_INVALID_LABEL_INDEX 0xFFFFFFFF /* Import check status. */ uint8_t valid; uint16_t encap_tunneltype; /* IGP metric. */ uint32_t igpmetric; /* IGP nexthop. */ struct in_addr igpnexthop; /* Atomic set reference count (ie cause of pathlimit) */ uint32_t atomic; /* BGP redistribute route-map. */ struct { char *name; struct route_map *map; } rmap; /* Route Distinguisher */ struct prefix_rd prd; char *prd_pretty; /* MPLS label. */ mpls_label_t label; /* EVPN */ esi_t *eth_s_id; struct ethaddr *router_mac; struct prefix gatewayIp; }; /* Aggreagete address: * * advertise-map Set condition to advertise attribute * as-set Generate AS set path information * attribute-map Set attributes of aggregate * route-map Set parameters of aggregate * summary-only Filter more specific routes from updates * suppress-map Conditionally filter more specific routes from updates * */ struct bgp_aggregate { /* Summary-only flag. */ uint8_t summary_only; /* AS set generation. */ uint8_t as_set; /* Optional modify flag to override ORIGIN */ uint8_t origin; /** Are there MED mismatches? */ bool med_mismatched; /* MED matching state. */ /** Did we get the first MED value? */ bool med_initialized; /** Match only equal MED. */ bool match_med; /* Route-map for aggregated route. */ struct { char *name; struct route_map *map; bool changed; } rmap; /* Suppress-count. */ unsigned long count; /* Count of routes of origin type incomplete under this aggregate. */ unsigned long incomplete_origin_count; /* Count of routes of origin type egp under this aggregate. */ unsigned long egp_origin_count; /* Hash containing the communities of all the * routes under this aggregate. */ struct hash *community_hash; /* Hash containing the extended communities of all the * routes under this aggregate. */ struct hash *ecommunity_hash; /* Hash containing the large communities of all the * routes under this aggregate. */ struct hash *lcommunity_hash; /* Hash containing the AS-Path of all the * routes under this aggregate. */ struct hash *aspath_hash; /* Aggregate route's community. */ struct community *community; /* Aggregate route's extended community. */ struct ecommunity *ecommunity; /* Aggregate route's large community. */ struct lcommunity *lcommunity; /* Aggregate route's as-path. */ struct aspath *aspath; /* SAFI configuration. */ safi_t safi; /** MED value found in current group. */ uint32_t med_matched_value; /** * Test if aggregated address MED of all route match, otherwise * returns `false`. This macro will also return `true` if MED * matching is disabled. */ #define AGGREGATE_MED_VALID(aggregate) \ (((aggregate)->match_med && !(aggregate)->med_mismatched) \ || !(aggregate)->match_med) /** Suppress map route map name (`NULL` when disabled). */ char *suppress_map_name; /** Suppress map route map pointer. */ struct route_map *suppress_map; }; #define BGP_NEXTHOP_AFI_FROM_NHLEN(nhlen) \ ((nhlen) < IPV4_MAX_BYTELEN \ ? 0 \ : ((nhlen) < IPV6_MAX_BYTELEN ? AFI_IP : AFI_IP6)) #define BGP_ATTR_MP_NEXTHOP_LEN_IP6(attr) \ ((attr)->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL || \ (attr)->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL || \ (attr)->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL || \ (attr)->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL) #define BGP_ATTR_NEXTHOP_AFI_IP6(attr) \ (!CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP)) && \ BGP_ATTR_MP_NEXTHOP_LEN_IP6(attr)) #define BGP_PATH_COUNTABLE(BI) \ (!CHECK_FLAG((BI)->flags, BGP_PATH_HISTORY) \ && !CHECK_FLAG((BI)->flags, BGP_PATH_REMOVED)) /* Flags which indicate a route is unuseable in some form */ #define BGP_PATH_UNUSEABLE \ (BGP_PATH_HISTORY | BGP_PATH_DAMPED | BGP_PATH_REMOVED) /* Macro to check BGP information is alive or not. Sadly, * not equivalent to just checking previous, because of the * sense of the additional VALID flag. */ #define BGP_PATH_HOLDDOWN(BI) \ (!CHECK_FLAG((BI)->flags, BGP_PATH_VALID) \ || CHECK_FLAG((BI)->flags, BGP_PATH_UNUSEABLE)) #define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name) #define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist) #define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name) #define DISTRIBUTE_OUT(F) ((F)->dlist[FILTER_OUT].alist) #define PREFIX_LIST_IN_NAME(F) ((F)->plist[FILTER_IN].name) #define PREFIX_LIST_IN(F) ((F)->plist[FILTER_IN].plist) #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name) #define PREFIX_LIST_OUT(F) ((F)->plist[FILTER_OUT].plist) #define FILTER_LIST_IN_NAME(F) ((F)->aslist[FILTER_IN].name) #define FILTER_LIST_IN(F) ((F)->aslist[FILTER_IN].aslist) #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name) #define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist) #define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name) #define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map) #define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name) #define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map) #define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name) #define UNSUPPRESS_MAP(F) ((F)->usmap.map) #define ADVERTISE_MAP_NAME(F) ((F)->advmap.aname) #define ADVERTISE_MAP(F) ((F)->advmap.amap) #define ADVERTISE_CONDITION(F) ((F)->advmap.condition) #define CONDITION_MAP_NAME(F) ((F)->advmap.cname) #define CONDITION_MAP(F) ((F)->advmap.cmap) /* path PREFIX (addpath rxid NUMBER) */ #define PATH_ADDPATH_STR_BUFFER PREFIX2STR_BUFFER + 32 enum bgp_path_type { BGP_PATH_SHOW_ALL, BGP_PATH_SHOW_BESTPATH, BGP_PATH_SHOW_MULTIPATH }; static inline void bgp_bump_version(struct bgp_dest *dest) { dest->version = bgp_table_next_version(bgp_dest_table(dest)); } static inline int bgp_fibupd_safi(safi_t safi) { if (safi == SAFI_UNICAST || safi == SAFI_MULTICAST || safi == SAFI_LABELED_UNICAST || safi == SAFI_FLOWSPEC) return 1; return 0; } /* Flag if the route path's family matches params. */ static inline bool is_pi_family_matching(struct bgp_path_info *pi, afi_t afi, safi_t safi) { struct bgp_table *table; struct bgp_dest *dest; dest = pi->net; if (!dest) return false; table = bgp_dest_table(dest); if (table && table->afi == afi && table->safi == safi) return true; return false; } static inline void prep_for_rmap_apply(struct bgp_path_info *dst_pi, struct bgp_path_info_extra *dst_pie, struct bgp_dest *dest, struct bgp_path_info *src_pi, struct peer *peer, struct attr *attr) { memset(dst_pi, 0, sizeof(struct bgp_path_info)); dst_pi->peer = peer; dst_pi->attr = attr; dst_pi->net = dest; dst_pi->flags = src_pi->flags; dst_pi->type = src_pi->type; dst_pi->sub_type = src_pi->sub_type; dst_pi->mpath = src_pi->mpath; if (src_pi->extra) { memcpy(dst_pie, src_pi->extra, sizeof(struct bgp_path_info_extra)); dst_pi->extra = dst_pie; } } static inline bool bgp_check_advertise(struct bgp *bgp, struct bgp_dest *dest, safi_t safi) { if (!bgp_fibupd_safi(safi)) return true; return (!(BGP_SUPPRESS_FIB_ENABLED(bgp) && CHECK_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING) && (!bgp_option_check(BGP_OPT_NO_FIB)))); } /* * If we have a fib result and it failed to install( or was withdrawn due * to better admin distance we need to send down the wire a withdrawal. * This function assumes that bgp_check_advertise was already returned * as good to go. */ static inline bool bgp_check_withdrawal(struct bgp *bgp, struct bgp_dest *dest, safi_t safi) { struct bgp_path_info *pi, *selected = NULL; if (!bgp_fibupd_safi(safi) || !BGP_SUPPRESS_FIB_ENABLED(bgp)) return false; for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { selected = pi; continue; } if (pi->sub_type != BGP_ROUTE_NORMAL) return true; } /* * pi is selected and bgp is dealing with a static route * ( ie a network statement of some sort ). FIB installed * is irrelevant * * I am not sure what the above for loop is wanted in this * manner at this point. But I do know that if I have * a static route that is selected and it's the one * being checked for should I withdrawal we do not * want to withdraw the route on installation :) */ if (selected && selected->sub_type == BGP_ROUTE_STATIC) return false; if (CHECK_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED)) return false; return true; } /* called before bgp_process() */ DECLARE_HOOK(bgp_process, (struct bgp *bgp, afi_t afi, safi_t safi, struct bgp_dest *bn, struct peer *peer, bool withdraw), (bgp, afi, safi, bn, peer, withdraw)); /* called when a route is updated in the rib */ DECLARE_HOOK(bgp_route_update, (struct bgp *bgp, afi_t afi, safi_t safi, struct bgp_dest *bn, struct bgp_path_info *old_route, struct bgp_path_info *new_route), (bgp, afi, safi, bn, old_route, new_route)); /* BGP show options */ #define BGP_SHOW_OPT_JSON (1 << 0) #define BGP_SHOW_OPT_WIDE (1 << 1) #define BGP_SHOW_OPT_AFI_ALL (1 << 2) #define BGP_SHOW_OPT_AFI_IP (1 << 3) #define BGP_SHOW_OPT_AFI_IP6 (1 << 4) #define BGP_SHOW_OPT_ESTABLISHED (1 << 5) #define BGP_SHOW_OPT_FAILED (1 << 6) #define BGP_SHOW_OPT_JSON_DETAIL (1 << 7) #define BGP_SHOW_OPT_TERSE (1 << 8) #define BGP_SHOW_OPT_ROUTES_DETAIL (1 << 9) /* Prototypes. */ extern void bgp_rib_remove(struct bgp_dest *dest, struct bgp_path_info *pi, struct peer *peer, afi_t afi, safi_t safi); extern void bgp_process_queue_init(struct bgp *bgp); extern void bgp_route_init(void); extern void bgp_route_finish(void); extern void bgp_cleanup_routes(struct bgp *); extern void bgp_free_aggregate_info(struct bgp_aggregate *aggregate); extern void bgp_announce_route(struct peer *peer, afi_t afi, safi_t safi, bool force); extern void bgp_stop_announce_route_timer(struct peer_af *paf); extern void bgp_announce_route_all(struct peer *); extern void bgp_default_originate(struct peer *peer, afi_t afi, safi_t safi, bool withdraw); extern void bgp_soft_reconfig_table_task_cancel(const struct bgp *bgp, const struct bgp_table *table, const struct peer *peer); /* * If this peer is configured for soft reconfig in then do the work * and return true. If it is not return false; and do nothing */ extern bool bgp_soft_reconfig_in(struct peer *peer, afi_t afi, safi_t safi); extern void bgp_clear_route(struct peer *, afi_t, safi_t); extern void bgp_clear_route_all(struct peer *); extern void bgp_clear_adj_in(struct peer *, afi_t, safi_t); extern void bgp_clear_stale_route(struct peer *, afi_t, safi_t); extern void bgp_set_stale_route(struct peer *peer, afi_t afi, safi_t safi); extern bool bgp_outbound_policy_exists(struct peer *, struct bgp_filter *); extern bool bgp_inbound_policy_exists(struct peer *, struct bgp_filter *); extern struct bgp_dest *bgp_afi_node_get(struct bgp_table *table, afi_t afi, safi_t safi, const struct prefix *p, struct prefix_rd *prd); extern struct bgp_path_info *bgp_path_info_lock(struct bgp_path_info *path); extern struct bgp_path_info *bgp_path_info_unlock(struct bgp_path_info *path); extern bool bgp_path_info_nexthop_changed(struct bgp_path_info *pi, struct peer *to, afi_t afi); extern struct bgp_path_info * bgp_get_imported_bpi_ultimate(struct bgp_path_info *info); extern void bgp_path_info_add(struct bgp_dest *dest, struct bgp_path_info *pi); extern void bgp_path_info_extra_free(struct bgp_path_info_extra **extra); extern struct bgp_dest *bgp_path_info_reap(struct bgp_dest *dest, struct bgp_path_info *pi); extern void bgp_path_info_delete(struct bgp_dest *dest, struct bgp_path_info *pi); extern struct bgp_path_info_extra * bgp_path_info_extra_get(struct bgp_path_info *path); extern void bgp_path_info_set_flag(struct bgp_dest *dest, struct bgp_path_info *path, uint32_t flag); extern void bgp_path_info_unset_flag(struct bgp_dest *dest, struct bgp_path_info *path, uint32_t flag); extern void bgp_path_info_path_with_addpath_rx_str(struct bgp_path_info *pi, char *buf, size_t buf_len); extern int bgp_nlri_parse_ip(struct peer *, struct attr *, struct bgp_nlri *); extern bool bgp_maximum_prefix_overflow(struct peer *, afi_t, safi_t, int); extern void bgp_redistribute_add(struct bgp *bgp, struct prefix *p, const union g_addr *nexthop, ifindex_t ifindex, enum nexthop_types_t nhtype, uint8_t distance, enum blackhole_type bhtype, uint32_t metric, uint8_t type, unsigned short instance, route_tag_t tag); extern void bgp_redistribute_delete(struct bgp *, struct prefix *, uint8_t, unsigned short); extern void bgp_redistribute_withdraw(struct bgp *, afi_t, int, unsigned short); extern void bgp_static_add(struct bgp *); extern void bgp_static_delete(struct bgp *); extern void bgp_static_redo_import_check(struct bgp *); extern void bgp_purge_static_redist_routes(struct bgp *bgp); extern void bgp_static_update(struct bgp *bgp, const struct prefix *p, struct bgp_static *s, afi_t afi, safi_t safi); extern void bgp_static_withdraw(struct bgp *bgp, const struct prefix *p, afi_t afi, safi_t safi, struct prefix_rd *prd); extern int bgp_static_set(struct vty *vty, bool negate, const char *ip_str, const char *rd_str, const char *label_str, afi_t afi, safi_t safi, const char *rmap, int backdoor, uint32_t label_index, int evpn_type, const char *esi, const char *gwip, const char *ethtag, const char *routermac); /* this is primarily for MPLS-VPN */ extern void bgp_update(struct peer *peer, const struct prefix *p, uint32_t addpath_id, struct attr *attr, afi_t afi, safi_t safi, int type, int sub_type, struct prefix_rd *prd, mpls_label_t *label, uint32_t num_labels, int soft_reconfig, struct bgp_route_evpn *evpn); extern void bgp_withdraw(struct peer *peer, const struct prefix *p, uint32_t addpath_id, afi_t afi, safi_t safi, int type, int sub_type, struct prefix_rd *prd, mpls_label_t *label, uint32_t num_labels, struct bgp_route_evpn *evpn); /* for bgp_nexthop and bgp_damp */ extern void bgp_process(struct bgp *, struct bgp_dest *, afi_t, safi_t); /* * Add an end-of-initial-update marker to the process queue. This is just a * queue element with NULL bgp node. */ extern void bgp_add_eoiu_mark(struct bgp *); extern void bgp_config_write_table_map(struct vty *, struct bgp *, afi_t, safi_t); extern void bgp_config_write_network(struct vty *, struct bgp *, afi_t, safi_t); extern void bgp_config_write_distance(struct vty *, struct bgp *, afi_t, safi_t); extern void bgp_aggregate_delete(struct bgp *bgp, const struct prefix *p, afi_t afi, safi_t safi, struct bgp_aggregate *aggregate); extern bool bgp_aggregate_route(struct bgp *bgp, const struct prefix *p, afi_t afi, safi_t safi, struct bgp_aggregate *aggregate); extern void bgp_aggregate_increment(struct bgp *bgp, const struct prefix *p, struct bgp_path_info *path, afi_t afi, safi_t safi); extern void bgp_aggregate_decrement(struct bgp *bgp, const struct prefix *p, struct bgp_path_info *path, afi_t afi, safi_t safi); extern uint8_t bgp_distance_apply(const struct prefix *p, struct bgp_path_info *path, afi_t afi, safi_t safi, struct bgp *bgp); extern afi_t bgp_node_afi(struct vty *); extern safi_t bgp_node_safi(struct vty *); extern struct bgp_path_info *info_make(int type, int sub_type, unsigned short instance, struct peer *peer, struct attr *attr, struct bgp_dest *dest); extern void route_vty_out(struct vty *vty, const struct prefix *p, struct bgp_path_info *path, int display, safi_t safi, json_object *json_paths, bool wide); extern void route_vty_out_tag(struct vty *vty, const struct prefix *p, struct bgp_path_info *path, int display, safi_t safi, json_object *json); extern void route_vty_out_tmp(struct vty *vty, struct bgp_dest *dest, const struct prefix *p, struct attr *attr, safi_t safi, bool use_json, json_object *json_ar, bool wide); extern void route_vty_out_overlay(struct vty *vty, const struct prefix *p, struct bgp_path_info *path, int display, json_object *json); extern void bgp_notify_conditional_adv_scanner(struct update_subgroup *subgrp); extern void subgroup_process_announce_selected(struct update_subgroup *subgrp, struct bgp_path_info *selected, struct bgp_dest *dest, afi_t afi, safi_t safi, uint32_t addpath_tx_id); extern bool subgroup_announce_check(struct bgp_dest *dest, struct bgp_path_info *pi, struct update_subgroup *subgrp, const struct prefix *p, struct attr *attr, struct attr *post_attr); extern void bgp_peer_clear_node_queue_drain_immediate(struct peer *peer); extern void bgp_process_queues_drain_immediate(void); /* for encap/vpn */ extern struct bgp_dest *bgp_safi_node_lookup(struct bgp_table *table, safi_t safi, const struct prefix *p, struct prefix_rd *prd); extern void bgp_path_info_restore(struct bgp_dest *dest, struct bgp_path_info *path); extern int bgp_path_info_cmp_compatible(struct bgp *bgp, struct bgp_path_info *new, struct bgp_path_info *exist, char *pfx_buf, afi_t afi, safi_t safi, enum bgp_path_selection_reason *reason); extern void bgp_attr_add_llgr_community(struct attr *attr); extern void bgp_attr_add_gshut_community(struct attr *attr); extern void bgp_best_selection(struct bgp *bgp, struct bgp_dest *dest, struct bgp_maxpaths_cfg *mpath_cfg, struct bgp_path_info_pair *result, afi_t afi, safi_t safi); extern void bgp_zebra_clear_route_change_flags(struct bgp_dest *dest); extern bool bgp_zebra_has_route_changed(struct bgp_path_info *selected); extern void route_vty_out_detail_header(struct vty *vty, struct bgp *bgp, struct bgp_dest *dest, const struct prefix *p, const struct prefix_rd *prd, afi_t afi, safi_t safi, json_object *json, bool incremental_print); extern void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn, const struct prefix *p, struct bgp_path_info *path, afi_t afi, safi_t safi, enum rpki_states, json_object *json_paths); extern int bgp_show_table_rd(struct vty *vty, struct bgp *bgp, afi_t afi, safi_t safi, struct bgp_table *table, struct prefix_rd *prd, enum bgp_show_type type, void *output_arg, uint16_t show_flags); extern void bgp_best_path_select_defer(struct bgp *bgp, afi_t afi, safi_t safi); extern bool bgp_update_martian_nexthop(struct bgp *bgp, afi_t afi, safi_t safi, uint8_t type, uint8_t stype, struct attr *attr, struct bgp_dest *dest); extern int bgp_evpn_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new, struct bgp_path_info *exist, int *paths_eq, bool debug); extern void bgp_aggregate_toggle_suppressed(struct bgp_aggregate *aggregate, struct bgp *bgp, const struct prefix *p, afi_t afi, safi_t safi, bool suppress); extern void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr); const char * bgp_path_selection_reason2str(enum bgp_path_selection_reason reason); extern bool bgp_path_suppressed(struct bgp_path_info *pi); extern bool bgp_addpath_encode_rx(struct peer *peer, afi_t afi, safi_t safi); extern const struct prefix_rd *bgp_rd_from_dest(const struct bgp_dest *dest, safi_t safi); extern void bgp_path_info_free_with_caller(const char *caller, struct bgp_path_info *path); extern void bgp_path_info_add_with_caller(const char *caller, struct bgp_dest *dest, struct bgp_path_info *pi); extern void bgp_aggregate_free(struct bgp_aggregate *aggregate); extern int bgp_path_info_cmp(struct bgp *bgp, struct bgp_path_info *new, struct bgp_path_info *exist, int *paths_eq, struct bgp_maxpaths_cfg *mpath_cfg, bool debug, char *pfx_buf, afi_t afi, safi_t safi, enum bgp_path_selection_reason *reason); #define bgp_path_info_add(A, B) \ bgp_path_info_add_with_caller(__func__, (A), (B)) #define bgp_path_info_free(B) bgp_path_info_free_with_caller(__func__, (B)) #endif /* _QUAGGA_BGP_ROUTE_H */