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/*
* IS-IS Rout(e)ing protocol - isisd.h
*
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public Licenseas published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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 ISISD_H
#define ISISD_H
#include "vty.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_common.h"
#include "isisd/isis_redist.h"
#include "isis_flags.h"
#include "dict.h"
#include "isis_memory.h"
#include "qobj.h"
extern struct zebra_privs_t isisd_privs;
/* uncomment if you are a developer in bug hunt */
/* #define EXTREME_DEBUG */
/* #define EXTREME_DICT_DEBUG */
struct isis {
unsigned long process_id;
int sysid_set;
uint8_t sysid[ISIS_SYS_ID_LEN]; /* SystemID for this IS */
uint32_t router_id; /* Router ID from zebra */
struct list *area_list; /* list of IS-IS areas */
struct list *init_circ_list;
struct list *nexthops; /* IPv4 next hops from this IS */
struct list *nexthops6; /* IPv6 next hops from this IS */
uint8_t max_area_addrs; /* maximumAreaAdresses */
struct area_addr *man_area_addrs; /* manualAreaAddresses */
uint32_t debugs; /* bitmap for debug */
time_t uptime; /* when did we start */
struct thread *t_dync_clean; /* dynamic hostname cache cleanup thread */
uint32_t circuit_ids_used[8]; /* 256 bits to track circuit ids 1 through 255 */
struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
QOBJ_FIELDS
};
extern struct isis *isis;
DECLARE_QOBJ_TYPE(isis_area)
enum spf_tree_id {
SPFTREE_IPV4 = 0,
SPFTREE_IPV6,
SPFTREE_DSTSRC,
SPFTREE_COUNT
};
struct isis_area {
struct isis *isis; /* back pointer */
dict_t *lspdb[ISIS_LEVELS]; /* link-state dbs */
struct isis_spftree *spftree[SPFTREE_COUNT][ISIS_LEVELS];
#define DEFAULT_LSP_MTU 1497
unsigned int lsp_mtu; /* Size of LSPs to generate */
struct list *circuit_list; /* IS-IS circuits */
struct flags flags;
struct thread *t_tick; /* LSP walker */
struct thread *t_lsp_refresh[ISIS_LEVELS];
/* t_lsp_refresh is used in two ways:
* a) regular refresh of LSPs
* b) (possibly throttled) updates to LSPs
*
* The lsp_regenerate_pending flag tracks whether the timer is active
* for the a) or the b) case.
*
* It is of utmost importance to clear this flag when the timer is
* rescheduled for normal refresh, because otherwise, updates will
* be delayed until the next regular refresh.
*/
int lsp_regenerate_pending[ISIS_LEVELS];
/*
* Configurables
*/
struct isis_passwd area_passwd;
struct isis_passwd domain_passwd;
/* do we support dynamic hostnames? */
char dynhostname;
/* do we support new style metrics? */
char newmetric;
char oldmetric;
/* identifies the routing instance */
char *area_tag;
/* area addresses for this area */
struct list *area_addrs;
uint16_t max_lsp_lifetime[ISIS_LEVELS];
char is_type; /* level-1 level-1-2 or level-2-only */
/* are we overloaded? */
char overload_bit;
/* L1/L2 router identifier for inter-area traffic */
char attached_bit;
uint16_t lsp_refresh[ISIS_LEVELS];
/* minimum time allowed before lsp retransmission */
uint16_t lsp_gen_interval[ISIS_LEVELS];
/* min interval between between consequtive SPFs */
uint16_t min_spf_interval[ISIS_LEVELS];
/* the percentage of LSP mtu size used, before generating a new frag */
int lsp_frag_threshold;
int ip_circuits;
/* logging adjacency changes? */
uint8_t log_adj_changes;
/* multi topology settings */
struct list *mt_settings;
int ipv6_circuits;
/* Counters */
uint32_t circuit_state_changes;
struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
[ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];
struct spf_backoff *spf_delay_ietf[ISIS_LEVELS]; /*Structure with IETF
SPF algo
parameters*/
struct thread *spf_timer[ISIS_LEVELS];
QOBJ_FIELDS
};
DECLARE_QOBJ_TYPE(isis_area)
void isis_init(void);
void isis_new(unsigned long);
struct isis_area *isis_area_create(const char *);
struct isis_area *isis_area_lookup(const char *);
int isis_area_get(struct vty *vty, const char *area_tag);
void print_debug(struct vty *, int, int);
void isis_area_invalidate_routes(struct isis_area *area, int levels);
void isis_area_verify_routes(struct isis_area *area);
void isis_area_overload_bit_set(struct isis_area *area, bool overload_bit);
void isis_area_attached_bit_set(struct isis_area *area, bool attached_bit);
void isis_area_dynhostname_set(struct isis_area *area, bool dynhostname);
void isis_area_metricstyle_set(struct isis_area *area, bool old_metric,
bool new_metric);
void isis_area_lsp_mtu_set(struct isis_area *area, unsigned int lsp_mtu);
void isis_area_is_type_set(struct isis_area *area, int is_type);
void isis_area_max_lsp_lifetime_set(struct isis_area *area, int level,
uint16_t max_lsp_lifetime);
void isis_area_lsp_refresh_set(struct isis_area *area, int level,
uint16_t lsp_refresh);
/* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
int isis_area_passwd_unset(struct isis_area *area, int level);
int isis_area_passwd_cleartext_set(struct isis_area *area, int level,
const char *passwd, uint8_t snp_auth);
int isis_area_passwd_hmac_md5_set(struct isis_area *area, int level,
const char *passwd, uint8_t snp_auth);
void isis_vty_init(void);
/* Master of threads. */
extern struct thread_master *master;
#define DEBUG_ADJ_PACKETS (1<<0)
#define DEBUG_CHECKSUM_ERRORS (1<<1)
#define DEBUG_LOCAL_UPDATES (1<<2)
#define DEBUG_PROTOCOL_ERRORS (1<<3)
#define DEBUG_SNP_PACKETS (1<<4)
#define DEBUG_UPDATE_PACKETS (1<<5)
#define DEBUG_SPF_EVENTS (1<<6)
#define DEBUG_SPF_STATS (1<<7)
#define DEBUG_SPF_TRIGGERS (1<<8)
#define DEBUG_RTE_EVENTS (1<<9)
#define DEBUG_EVENTS (1<<10)
#define DEBUG_ZEBRA (1<<11)
#define DEBUG_PACKET_DUMP (1<<12)
#define DEBUG_LSP_GEN (1<<13)
#define DEBUG_LSP_SCHED (1<<14)
#define lsp_debug(...) \
do { \
if (isis->debugs & DEBUG_LSP_GEN) \
zlog_debug(__VA_ARGS__); \
} while (0)
#define sched_debug(...) \
do { \
if (isis->debugs & DEBUG_LSP_SCHED) \
zlog_debug(__VA_ARGS__); \
} while (0)
#define DEBUG_TE (1<<13)
#define IS_DEBUG_ISIS(x) (isis->debugs & x)
#endif /* ISISD_H */
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