/*
 * 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; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef ISISD_H
#define ISISD_H

#define ISISD_VERSION "0.0.7"

/* uncomment if you are a developer in bug hunt */
/* #define EXTREME_DEBUG  */
/* #define EXTREME_TLV_DEBUG */

/* If you want topology stuff compiled in */
/* #define TOPOLOGY_GENERATE */

struct rmap{
  char *name;
  struct route_map *map;
};

struct isis
{
  u_long process_id;
  int sysid_set;
  u_char sysid[ISIS_SYS_ID_LEN];    /* SystemID for this IS */
  struct list *area_list;           /* list of IS-IS areas */
  struct list *init_circ_list;
  struct list *nexthops;            /* IPv4 next hops from this IS */
#ifdef HAVE_IPV6
  struct list  *nexthops6;          /* IPv6 next hops from this IS */
#endif /* HAVE_IPV6 */
  u_char max_area_addrs;            /* maximumAreaAdresses */
  struct area_addr *man_area_addrs; /* manualAreaAddresses */
  u_int32_t debugs;                 /* bitmap for debug */
  time_t uptime;                    /* when did we start */
  
  /* Redistributed external information. */
  struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
  /* Redistribute metric info. */
  struct {
    int type;                   /* Internal or External  */
    int value;                  /* metric value */
  } dmetric [ZEBRA_ROUTE_MAX + 1];

  struct {
    char *name;
    struct route_map *map;
  } rmap [ZEBRA_ROUTE_MAX + 1];
#ifdef HAVE_IPV6
  struct {
    struct {
      char *name;
      struct route_map *map;
    } rmap [ZEBRA_ROUTE_MAX + 1];
  } inet6_afmode;
#endif
};

struct isis_area 
{
  struct isis *isis;                          /* back pointer */
  dict_t *lspdb[ISIS_LEVELS];                 /* link-state dbs */
  struct isis_spftree *spftree[ISIS_LEVELS];  /* The v4 SPTs */
  struct route_table *route_table;            /* IPv4 routes */
#ifdef HAVE_IPV6
  struct isis_spftree *spftree6[ISIS_LEVELS]; /* The v4 SPTs */
  struct route_table *route_table6;           /* IPv6 routes */
#endif
  int min_bcast_mtu;
  struct list *circuit_list;                  /* IS-IS circuits */
  struct flags flags;                        
  struct thread *t_tick;                      /* LSP walker */
  struct thread *t_remove_aged;              
  int lsp_regenerate_pending[ISIS_LEVELS];
  struct thread *t_lsp_refresh[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;  
  /* identifies the routing instance   */
  char *area_tag;  
  /* area addresses for this area      */
  struct list *area_addrs;  
  u_int16_t max_lsp_lifetime[ISIS_LEVELS];         
  char is_type;  /* level-1 level-1-2 or level-2-only */
  u_int16_t lsp_refresh[ISIS_LEVELS];
  /* minimum time allowed before lsp retransmission */
  u_int16_t lsp_gen_interval[ISIS_LEVELS];
  /* min interval between between consequtive SPFs */
  u_int16_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;
#ifdef HAVE_IPV6
  int ipv6_circuits;
#endif /* HAVE_IPV6 */
  /* Counters */
  u_int32_t circuit_state_changes;
#ifdef TOPOLOGY_GENERATE
  struct list                   *topology;
  char   topology_baseis[ISIS_SYS_ID_LEN]; /* is for the first is emulated  */
  char                    top_params[200]; /* FIXME: what is reasonable?    */
#endif /* TOPOLOGY_GENERATE */
};

void isis_init(void);
struct isis_area *isis_area_lookup (char *);

#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)

#endif /* ISISD_H */