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// 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 */
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