// SPDX-License-Identifier: GPL-2.0-or-later /* * IS-IS Rout(e)ing protocol - isis_circuit.h * * Copyright (C) 2001,2002 Sampo Saaristo * Tampere University of Technology * Institute of Communications Engineering */ #ifndef ISIS_CIRCUIT_H #define ISIS_CIRCUIT_H #include "vty.h" #include "if.h" #include "qobj.h" #include "prefix.h" #include "ferr.h" #include "nexthop.h" #include "isis_constants.h" #include "isis_common.h" #include "isis_csm.h" DECLARE_HOOK(isis_if_new_hook, (struct interface *ifp), (ifp)); struct isis_lsp; struct password { struct password *next; int len; uint8_t *pass; }; struct metric { uint8_t metric_default; uint8_t metric_error; uint8_t metric_expense; uint8_t metric_delay; }; struct isis_bcast_info { uint8_t snpa[ETH_ALEN]; /* SNPA of this circuit */ char run_dr_elect[ISIS_LEVELS]; /* Should we run dr election ? */ struct event *t_run_dr[ISIS_LEVELS]; /* DR election thread */ struct event *t_send_lan_hello[ISIS_LEVELS]; /* send LAN IIHs in this thread */ struct list *adjdb[ISIS_LEVELS]; /* adjacency dbs */ struct list *lan_neighs[ISIS_LEVELS]; /* list of lx neigh snpa */ char is_dr[ISIS_LEVELS]; /* Are we level x DR ? */ uint8_t l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */ uint8_t l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */ struct event *t_refresh_pseudo_lsp[ISIS_LEVELS]; /* refresh pseudo-node LSPs */ }; struct isis_p2p_info { struct isis_adjacency *neighbor; struct event *t_send_p2p_hello; /* send P2P IIHs in this thread */ }; struct isis_circuit_arg { int level; struct isis_circuit *circuit; }; /* * Hello padding types */ enum isis_hello_padding { ISIS_HELLO_PADDING_ALWAYS, ISIS_HELLO_PADDING_DISABLED, ISIS_HELLO_PADDING_DURING_ADJACENCY_FORMATION }; struct isis_circuit { enum isis_circuit_state state; uint8_t circuit_id; /* l1/l2 bcast CircuitID */ time_t last_uptime; struct isis *isis; struct isis_area *area; /* back pointer to the area */ struct interface *interface; /* interface info from z */ int fd; /* IS-IS l1/2 socket */ int sap_length; /* SAP length for DLPI */ struct nlpids nlpids; /* * Threads */ struct event *t_read; struct event *t_send_csnp[ISIS_LEVELS]; struct event *t_send_psnp[ISIS_LEVELS]; struct isis_tx_queue *tx_queue; struct isis_circuit_arg level_arg[ISIS_LEVELS]; /* used as argument for threads */ /* there is no real point in two streams, just for programming kicker */ int (*rx)(struct isis_circuit *circuit, uint8_t *ssnpa); struct stream *rcv_stream; /* Stream for receiving */ int (*tx)(struct isis_circuit *circuit, int level); struct stream *snd_stream; /* Stream for sending */ int idx; /* idx in S[RM|SN] flags */ #define CIRCUIT_T_UNKNOWN 0 #define CIRCUIT_T_BROADCAST 1 #define CIRCUIT_T_P2P 2 #define CIRCUIT_T_LOOPBACK 3 int circ_type; /* type of the physical interface */ int circ_type_config; /* config type of the physical interface */ union { struct isis_bcast_info bc; struct isis_p2p_info p2p; } u; uint8_t priority[ISIS_LEVELS]; /* l1/2 IS configured priority */ enum isis_hello_padding pad_hellos; /* type of Hello PDUs padding */ char ext_domain; /* externalDomain (boolean) */ int lsp_regenerate_pending[ISIS_LEVELS]; uint64_t lsp_error_counter; /* * Configurables */ char *tag; /* area tag */ struct isis_passwd passwd; /* Circuit rx/tx password */ int is_type_config; /* configured circuit is type */ int is_type; /* circuit is type == level of circuit * differentiated from circuit type (media) */ uint32_t hello_interval[ISIS_LEVELS]; /* hello-interval in seconds */ uint16_t hello_multiplier[ISIS_LEVELS]; /* hello-multiplier */ uint16_t csnp_interval[ISIS_LEVELS]; /* csnp-interval in seconds */ uint16_t psnp_interval[ISIS_LEVELS]; /* psnp-interval in seconds */ uint8_t metric[ISIS_LEVELS]; uint32_t te_metric[ISIS_LEVELS]; struct isis_ext_subtlvs *ext; /* Extended parameters (TE + Adj SID */ int ip_router; /* Route IP ? */ int is_passive; /* Is Passive ? */ struct list *mt_settings; /* IS-IS MT Settings */ struct list *ip_addrs; /* our IP addresses */ int ipv6_router; /* Route IPv6 ? */ struct list *ipv6_link; /* our link local IPv6 addresses */ struct list *ipv6_non_link; /* our non-link local IPv6 addresses */ uint16_t upadjcount[ISIS_LEVELS]; #define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01 #define ISIS_CIRCUIT_IF_DOWN_FROM_Z 0x02 uint8_t flags; bool disable_threeway_adj; struct { bool enabled; char *profile; } bfd_config; struct ldp_sync_info *ldp_sync_info; bool lfa_protection[ISIS_LEVELS]; bool rlfa_protection[ISIS_LEVELS]; uint32_t rlfa_max_metric[ISIS_LEVELS]; struct hash *lfa_excluded_ifaces[ISIS_LEVELS]; bool tilfa_protection[ISIS_LEVELS]; bool tilfa_node_protection[ISIS_LEVELS]; bool tilfa_link_fallback[ISIS_LEVELS]; /* * Counters as in 10589--11.2.5.9 */ uint32_t adj_state_changes; /* changesInAdjacencyState */ uint32_t init_failures; /* intialisationFailures */ uint32_t ctrl_pdus_rxed; /* controlPDUsReceived */ uint32_t ctrl_pdus_txed; /* controlPDUsSent */ uint32_t desig_changes[ISIS_LEVELS]; /* lanLxDesignatedIntermediateSystemChanges */ uint32_t rej_adjacencies; /* rejectedAdjacencies */ /* * Counters as in ietf-isis@2019-09-09.yang */ uint32_t id_len_mismatches; /* id-len-mismatch */ uint32_t max_area_addr_mismatches; /* max-area-addresses-mismatch */ uint32_t auth_type_failures; /*authentication-type-fails */ uint32_t auth_failures; /* authentication-fails */ uint32_t snmp_id; /* Circuit id in snmp */ uint32_t snmp_adj_idx_gen; /* Create unique id for adjacency on creation */ struct list *snmp_adj_list; /* List in id order */ QOBJ_FIELDS; }; DECLARE_QOBJ_TYPE(isis_circuit); void isis_circuit_init(void); struct isis_circuit *isis_circuit_new(struct interface *ifp, const char *tag); void isis_circuit_del(struct isis_circuit *circuit); struct isis_circuit *circuit_scan_by_ifp(struct interface *ifp); void isis_circuit_configure(struct isis_circuit *circuit, struct isis_area *area); void isis_circuit_deconfigure(struct isis_circuit *circuit, struct isis_area *area); void isis_circuit_if_add(struct isis_circuit *circuit, struct interface *ifp); void isis_circuit_if_del(struct isis_circuit *circuit, struct interface *ifp); void isis_circuit_if_bind(struct isis_circuit *circuit, struct interface *ifp); void isis_circuit_if_unbind(struct isis_circuit *circuit, struct interface *ifp); void isis_circuit_add_addr(struct isis_circuit *circuit, struct connected *conn); void isis_circuit_del_addr(struct isis_circuit *circuit, struct connected *conn); void isis_circuit_prepare(struct isis_circuit *circuit); int isis_circuit_up(struct isis_circuit *circuit); void isis_circuit_down(struct isis_circuit *); void circuit_update_nlpids(struct isis_circuit *circuit); void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty, char detail); void isis_circuit_print_json(struct isis_circuit *circuit, struct json_object *json, char detail); size_t isis_circuit_pdu_size(struct isis_circuit *circuit); void isis_circuit_switchover_routes(struct isis_circuit *circuit, int family, union g_addr *nexthop_ip, ifindex_t ifindex); void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream); void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router, bool ipv6_router); ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive); void isis_circuit_is_type_set(struct isis_circuit *circuit, int is_type); void isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type); ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level, int metric); ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit); ferr_r isis_circuit_passwd_set(struct isis_circuit *circuit, uint8_t passwd_type, const char *passwd); ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit, const char *passwd); ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit, const char *passwd); int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid, bool enabled); #ifdef FABRICD DECLARE_HOOK(isis_circuit_config_write, (struct isis_circuit *circuit, struct vty *vty), (circuit, vty)); #endif DECLARE_HOOK(isis_circuit_add_addr_hook, (struct isis_circuit *circuit), (circuit)); DECLARE_HOOK(isis_circuit_new_hook, (struct isis_circuit *circuit), (circuit)); DECLARE_HOOK(isis_circuit_del_hook, (struct isis_circuit *circuit), (circuit)); #endif /* _ZEBRA_ISIS_CIRCUIT_H */