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235 lines
8.0 KiB
C
235 lines
8.0 KiB
C
/*
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* IS-IS Rout(e)ing protocol - isisd.h
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*
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* Copyright (C) 2001,2002 Sampo Saaristo
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* Tampere University of Technology
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* Institute of Communications Engineering
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public Licenseas published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef ISISD_H
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#define ISISD_H
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#include "vty.h"
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#include "isisd/isis_constants.h"
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#include "isisd/isis_common.h"
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#include "isisd/isis_redist.h"
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#include "isis_flags.h"
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#include "dict.h"
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#include "isis_memory.h"
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#include "qobj.h"
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#ifdef FABRICD
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static const bool fabricd = true;
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#define PROTO_TYPE ZEBRA_ROUTE_OPENFABRIC
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#define PROTO_NAME "openfabric"
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#define PROTO_HELP "OpenFabric routing protocol\n"
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#define PROTO_REDIST_STR FRR_REDIST_STR_FABRICD
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#define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_FABRICD
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#define ROUTER_NODE OPENFABRIC_NODE
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#else
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static const bool fabricd = false;
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#define PROTO_TYPE ZEBRA_ROUTE_ISIS
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#define PROTO_NAME "isis"
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#define PROTO_HELP "IS-IS routing protocol\n"
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#define PROTO_REDIST_STR FRR_REDIST_STR_ISISD
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#define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_ISISD
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#define ROUTER_NODE ISIS_NODE
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#endif
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extern struct zebra_privs_t isisd_privs;
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/* uncomment if you are a developer in bug hunt */
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/* #define EXTREME_DEBUG */
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/* #define EXTREME_DICT_DEBUG */
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struct fabricd;
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struct isis {
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unsigned long process_id;
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int sysid_set;
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uint8_t sysid[ISIS_SYS_ID_LEN]; /* SystemID for this IS */
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uint32_t router_id; /* Router ID from zebra */
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struct list *area_list; /* list of IS-IS areas */
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struct list *init_circ_list;
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struct list *nexthops; /* IPv4 next hops from this IS */
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struct list *nexthops6; /* IPv6 next hops from this IS */
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uint8_t max_area_addrs; /* maximumAreaAdresses */
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struct area_addr *man_area_addrs; /* manualAreaAddresses */
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uint32_t debugs; /* bitmap for debug */
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time_t uptime; /* when did we start */
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struct thread *t_dync_clean; /* dynamic hostname cache cleanup thread */
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uint32_t circuit_ids_used[8]; /* 256 bits to track circuit ids 1 through 255 */
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struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
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QOBJ_FIELDS
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};
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extern struct isis *isis;
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DECLARE_QOBJ_TYPE(isis_area)
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enum spf_tree_id {
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SPFTREE_IPV4 = 0,
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SPFTREE_IPV6,
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SPFTREE_DSTSRC,
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SPFTREE_COUNT
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};
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struct lsp_refresh_arg {
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struct isis_area *area;
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int level;
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};
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struct isis_area {
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struct isis *isis; /* back pointer */
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dict_t *lspdb[ISIS_LEVELS]; /* link-state dbs */
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struct isis_spftree *spftree[SPFTREE_COUNT][ISIS_LEVELS];
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#define DEFAULT_LSP_MTU 1497
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unsigned int lsp_mtu; /* Size of LSPs to generate */
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struct list *circuit_list; /* IS-IS circuits */
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struct flags flags;
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struct thread *t_tick; /* LSP walker */
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struct thread *t_lsp_refresh[ISIS_LEVELS];
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struct timeval last_lsp_refresh_event[ISIS_LEVELS];
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/* t_lsp_refresh is used in two ways:
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* a) regular refresh of LSPs
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* b) (possibly throttled) updates to LSPs
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*
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* The lsp_regenerate_pending flag tracks whether the timer is active
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* for the a) or the b) case.
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*
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* It is of utmost importance to clear this flag when the timer is
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* rescheduled for normal refresh, because otherwise, updates will
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* be delayed until the next regular refresh.
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*/
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int lsp_regenerate_pending[ISIS_LEVELS];
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struct fabricd *fabricd;
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/*
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* Configurables
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*/
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struct isis_passwd area_passwd;
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struct isis_passwd domain_passwd;
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/* do we support dynamic hostnames? */
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char dynhostname;
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/* do we support new style metrics? */
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char newmetric;
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char oldmetric;
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/* identifies the routing instance */
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char *area_tag;
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/* area addresses for this area */
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struct list *area_addrs;
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uint16_t max_lsp_lifetime[ISIS_LEVELS];
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char is_type; /* level-1 level-1-2 or level-2-only */
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/* are we overloaded? */
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char overload_bit;
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/* L1/L2 router identifier for inter-area traffic */
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char attached_bit;
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uint16_t lsp_refresh[ISIS_LEVELS];
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/* minimum time allowed before lsp retransmission */
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uint16_t lsp_gen_interval[ISIS_LEVELS];
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/* min interval between between consequtive SPFs */
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uint16_t min_spf_interval[ISIS_LEVELS];
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/* the percentage of LSP mtu size used, before generating a new frag */
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int lsp_frag_threshold;
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int ip_circuits;
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/* logging adjacency changes? */
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uint8_t log_adj_changes;
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/* multi topology settings */
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struct list *mt_settings;
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int ipv6_circuits;
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bool purge_originator;
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/* Counters */
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uint32_t circuit_state_changes;
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struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
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[ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
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struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];
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struct spf_backoff *spf_delay_ietf[ISIS_LEVELS]; /*Structure with IETF
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SPF algo
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parameters*/
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struct thread *spf_timer[ISIS_LEVELS];
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struct lsp_refresh_arg lsp_refresh_arg[ISIS_LEVELS];
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QOBJ_FIELDS
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};
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DECLARE_QOBJ_TYPE(isis_area)
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void isis_init(void);
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void isis_new(unsigned long);
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struct isis_area *isis_area_create(const char *);
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struct isis_area *isis_area_lookup(const char *);
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int isis_area_get(struct vty *vty, const char *area_tag);
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void print_debug(struct vty *, int, int);
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void isis_area_invalidate_routes(struct isis_area *area, int levels);
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void isis_area_verify_routes(struct isis_area *area);
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void isis_area_overload_bit_set(struct isis_area *area, bool overload_bit);
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void isis_area_attached_bit_set(struct isis_area *area, bool attached_bit);
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void isis_area_dynhostname_set(struct isis_area *area, bool dynhostname);
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void isis_area_metricstyle_set(struct isis_area *area, bool old_metric,
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bool new_metric);
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void isis_area_lsp_mtu_set(struct isis_area *area, unsigned int lsp_mtu);
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void isis_area_is_type_set(struct isis_area *area, int is_type);
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void isis_area_max_lsp_lifetime_set(struct isis_area *area, int level,
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uint16_t max_lsp_lifetime);
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void isis_area_lsp_refresh_set(struct isis_area *area, int level,
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uint16_t lsp_refresh);
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/* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
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int isis_area_passwd_unset(struct isis_area *area, int level);
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int isis_area_passwd_cleartext_set(struct isis_area *area, int level,
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const char *passwd, uint8_t snp_auth);
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int isis_area_passwd_hmac_md5_set(struct isis_area *area, int level,
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const char *passwd, uint8_t snp_auth);
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/* Master of threads. */
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extern struct thread_master *master;
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#define DEBUG_ADJ_PACKETS (1<<0)
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#define DEBUG_SNP_PACKETS (1<<1)
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#define DEBUG_UPDATE_PACKETS (1<<2)
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#define DEBUG_SPF_EVENTS (1<<3)
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#define DEBUG_RTE_EVENTS (1<<4)
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#define DEBUG_EVENTS (1<<5)
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#define DEBUG_PACKET_DUMP (1<<6)
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#define DEBUG_LSP_GEN (1<<7)
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#define DEBUG_LSP_SCHED (1<<8)
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#define DEBUG_FABRICD_FLOODING (1<<9)
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#define DEBUG_BFD (1<<10)
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#define lsp_debug(...) \
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do { \
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if (isis->debugs & DEBUG_LSP_GEN) \
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zlog_debug(__VA_ARGS__); \
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} while (0)
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#define sched_debug(...) \
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do { \
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if (isis->debugs & DEBUG_LSP_SCHED) \
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zlog_debug(__VA_ARGS__); \
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} while (0)
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#define DEBUG_TE DEBUG_LSP_GEN
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#define IS_DEBUG_ISIS(x) (isis->debugs & x)
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#endif /* ISISD_H */
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