2 * IS-IS Rout(e)ing protocol - isisd.h
4 * Copyright (C) 2001,2002 Sampo Saaristo
5 * Tampere University of Technology
6 * Institute of Communications Engineering
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public Licenseas published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
13 * This program is distributed in the hope that it will be useful,but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #define ISISD_VERSION "0.0.7"
28 #include "isisd/isis_constants.h"
29 #include "isisd/isis_common.h"
30 #include "isisd/isis_redist.h"
31 #include "isis_flags.h"
34 /* uncomment if you are a developer in bug hunt */
35 /* #define EXTREME_DEBUG */
36 /* #define EXTREME_TLV_DEBUG */
42 u_char sysid[ISIS_SYS_ID_LEN]; /* SystemID for this IS */
43 u_int32_t router_id; /* Router ID from zebra */
44 struct list *area_list; /* list of IS-IS areas */
45 struct list *init_circ_list;
46 struct list *nexthops; /* IPv4 next hops from this IS */
48 struct list *nexthops6; /* IPv6 next hops from this IS */
49 #endif /* HAVE_IPV6 */
50 u_char max_area_addrs; /* maximumAreaAdresses */
51 struct area_addr *man_area_addrs; /* manualAreaAddresses */
52 u_int32_t debugs; /* bitmap for debug */
53 time_t uptime; /* when did we start */
54 struct thread *t_dync_clean; /* dynamic hostname cache cleanup thread */
56 struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
59 extern struct isis *isis;
63 struct isis *isis; /* back pointer */
64 dict_t *lspdb[ISIS_LEVELS]; /* link-state dbs */
65 struct isis_spftree *spftree[ISIS_LEVELS]; /* The v4 SPTs */
66 struct route_table *route_table[ISIS_LEVELS]; /* IPv4 routes */
68 struct isis_spftree *spftree6[ISIS_LEVELS]; /* The v6 SPTs */
69 struct route_table *route_table6[ISIS_LEVELS]; /* IPv6 routes */
71 #define DEFAULT_LSP_MTU 1497
72 unsigned int lsp_mtu; /* Size of LSPs to generate */
73 struct list *circuit_list; /* IS-IS circuits */
75 struct thread *t_tick; /* LSP walker */
76 struct thread *t_lsp_refresh[ISIS_LEVELS];
77 /* t_lsp_refresh is used in two ways:
78 * a) regular refresh of LSPs
79 * b) (possibly throttled) updates to LSPs
81 * The lsp_regenerate_pending flag tracks whether the timer is active
82 * for the a) or the b) case.
84 * It is of utmost importance to clear this flag when the timer is
85 * rescheduled for normal refresh, because otherwise, updates will
86 * be delayed until the next regular refresh.
88 int lsp_regenerate_pending[ISIS_LEVELS];
93 struct isis_passwd area_passwd;
94 struct isis_passwd domain_passwd;
95 /* do we support dynamic hostnames? */
97 /* do we support new style metrics? */
100 /* identifies the routing instance */
102 /* area addresses for this area */
103 struct list *area_addrs;
104 u_int16_t max_lsp_lifetime[ISIS_LEVELS];
105 char is_type; /* level-1 level-1-2 or level-2-only */
106 /* are we overloaded? */
108 /* L1/L2 router identifier for inter-area traffic */
110 u_int16_t lsp_refresh[ISIS_LEVELS];
111 /* minimum time allowed before lsp retransmission */
112 u_int16_t lsp_gen_interval[ISIS_LEVELS];
113 /* min interval between between consequtive SPFs */
114 u_int16_t min_spf_interval[ISIS_LEVELS];
115 /* the percentage of LSP mtu size used, before generating a new frag */
116 int lsp_frag_threshold;
118 /* logging adjacency changes? */
119 u_char log_adj_changes;
122 #endif /* HAVE_IPV6 */
124 u_int32_t circuit_state_changes;
125 struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
126 [ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
127 struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];
129 #ifdef TOPOLOGY_GENERATE
130 struct list *topology;
131 u_char topology_baseis[ISIS_SYS_ID_LEN]; /* IS for the first IS emulated. */
132 char *topology_basedynh; /* Dynamic hostname base. */
133 char top_params[200]; /* FIXME: what is reasonable? */
134 #endif /* TOPOLOGY_GENERATE */
137 void isis_init (void);
138 void isis_new(unsigned long);
139 struct isis_area *isis_area_create(const char *);
140 struct isis_area *isis_area_lookup (const char *);
141 int isis_area_get (struct vty *vty, const char *area_tag);
142 void print_debug(struct vty *, int, int);
144 void isis_area_overload_bit_set(struct isis_area *area, bool overload_bit);
145 void isis_area_attached_bit_set(struct isis_area *area, bool attached_bit);
146 void isis_area_dynhostname_set(struct isis_area *area, bool dynhostname);
147 void isis_area_metricstyle_set(struct isis_area *area, bool old_metric,
149 void isis_area_lsp_mtu_set(struct isis_area *area, unsigned int lsp_mtu);
150 void isis_area_is_type_set(struct isis_area *area, int is_type);
151 void isis_area_max_lsp_lifetime_set(struct isis_area *area, int level,
152 uint16_t max_lsp_lifetime);
153 void isis_area_lsp_refresh_set(struct isis_area *area, int level,
154 uint16_t lsp_refresh);
155 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
156 int isis_area_passwd_unset (struct isis_area *area, int level);
157 int isis_area_passwd_cleartext_set (struct isis_area *area, int level,
158 const char *passwd, u_char snp_auth);
159 int isis_area_passwd_hmac_md5_set (struct isis_area *area, int level,
160 const char *passwd, u_char snp_auth);
161 void isis_vty_init (void);
163 /* Master of threads. */
164 extern struct thread_master *master;
166 #define DEBUG_ADJ_PACKETS (1<<0)
167 #define DEBUG_CHECKSUM_ERRORS (1<<1)
168 #define DEBUG_LOCAL_UPDATES (1<<2)
169 #define DEBUG_PROTOCOL_ERRORS (1<<3)
170 #define DEBUG_SNP_PACKETS (1<<4)
171 #define DEBUG_UPDATE_PACKETS (1<<5)
172 #define DEBUG_SPF_EVENTS (1<<6)
173 #define DEBUG_SPF_STATS (1<<7)
174 #define DEBUG_SPF_TRIGGERS (1<<8)
175 #define DEBUG_RTE_EVENTS (1<<9)
176 #define DEBUG_EVENTS (1<<10)
177 #define DEBUG_ZEBRA (1<<11)
178 #define DEBUG_PACKET_DUMP (1<<12)
179 #define DEBUG_LSP_GEN (1<<13)
180 #define DEBUG_LSP_SCHED (1<<14)
182 #define lsp_debug(...) \
185 if (isis->debugs & DEBUG_LSP_GEN) \
186 zlog_debug(__VA_ARGS__); \
190 #define sched_debug(...) \
193 if (isis->debugs & DEBUG_LSP_SCHED) \
194 zlog_debug(__VA_ARGS__); \
198 #define DEBUG_TE (1<<13)
200 #define IS_DEBUG_ISIS(x) (isis->debugs & x)