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; see the file COPYING; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 #define ISISD_VERSION "0.0.7"
30 #include "isisd/isis_constants.h"
31 #include "isisd/isis_common.h"
32 #include "isisd/isis_redist.h"
33 #include "isis_flags.h"
35 #include "isis_memory.h"
38 /* uncomment if you are a developer in bug hunt */
39 /* #define EXTREME_DEBUG */
40 /* #define EXTREME_DICT_DEBUG */
45 u_char sysid
[ISIS_SYS_ID_LEN
]; /* SystemID for this IS */
46 u_int32_t router_id
; /* Router ID from zebra */
47 struct list
*area_list
; /* list of IS-IS areas */
48 struct list
*init_circ_list
;
49 struct list
*nexthops
; /* IPv4 next hops from this IS */
50 struct list
*nexthops6
; /* IPv6 next hops from this IS */
51 u_char max_area_addrs
; /* maximumAreaAdresses */
52 struct area_addr
*man_area_addrs
; /* manualAreaAddresses */
53 u_int32_t debugs
; /* bitmap for debug */
54 time_t uptime
; /* when did we start */
55 struct thread
*t_dync_clean
; /* dynamic hostname cache cleanup thread */
57 struct route_table
*ext_info
[REDIST_PROTOCOL_COUNT
];
62 extern struct isis
*isis
;
63 DECLARE_QOBJ_TYPE(isis_area
)
66 struct isis
*isis
; /* back pointer */
67 dict_t
*lspdb
[ISIS_LEVELS
]; /* link-state dbs */
68 struct isis_spftree
*spftree
[ISIS_LEVELS
]; /* The v4 SPTs */
69 struct route_table
*route_table
[ISIS_LEVELS
]; /* IPv4 routes */
70 struct isis_spftree
*spftree6
[ISIS_LEVELS
]; /* The v6 SPTs */
71 struct route_table
*route_table6
[ISIS_LEVELS
]; /* IPv6 routes */
73 /* clang-format off */
74 #define DEFAULT_LSP_MTU 1497
75 unsigned int lsp_mtu
; /* Size of LSPs to generate */
76 struct list
*circuit_list
; /* IS-IS circuits */
78 struct thread
*t_tick
; /* LSP walker */
79 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
80 /* t_lsp_refresh is used in two ways:
81 * a) regular refresh of LSPs
82 * b) (possibly throttled) updates to LSPs
84 * The lsp_regenerate_pending flag tracks whether the timer is active
85 * for the a) or the b) case.
87 * It is of utmost importance to clear this flag when the timer is
88 * rescheduled for normal refresh, because otherwise, updates will
89 * be delayed until the next regular refresh.
91 int lsp_regenerate_pending
[ISIS_LEVELS
];
96 struct isis_passwd area_passwd
;
97 struct isis_passwd domain_passwd
;
98 /* do we support dynamic hostnames? */
100 /* do we support new style metrics? */
103 /* identifies the routing instance */
105 /* area addresses for this area */
106 struct list
*area_addrs
;
107 u_int16_t max_lsp_lifetime
[ISIS_LEVELS
];
108 char is_type
; /* level-1 level-1-2 or level-2-only */
109 /* are we overloaded? */
111 /* L1/L2 router identifier for inter-area traffic */
113 u_int16_t lsp_refresh
[ISIS_LEVELS
];
114 /* minimum time allowed before lsp retransmission */
115 u_int16_t lsp_gen_interval
[ISIS_LEVELS
];
116 /* min interval between between consequtive SPFs */
117 u_int16_t min_spf_interval
[ISIS_LEVELS
];
118 /* the percentage of LSP mtu size used, before generating a new frag */
119 int lsp_frag_threshold
;
121 /* logging adjacency changes? */
122 u_char log_adj_changes
;
123 /* multi topology settings */
124 struct list
*mt_settings
;
127 u_int32_t circuit_state_changes
;
128 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
129 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
130 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
132 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
135 struct thread
*spf_timer
[ISIS_LEVELS
];
139 DECLARE_QOBJ_TYPE(isis_area
)
141 void isis_init(void);
142 void isis_new(unsigned long);
143 struct isis_area
*isis_area_create(const char *);
144 struct isis_area
*isis_area_lookup(const char *);
145 int isis_area_get(struct vty
*vty
, const char *area_tag
);
146 void print_debug(struct vty
*, int, int);
148 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
149 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
150 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
151 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
153 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
154 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
155 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
156 uint16_t max_lsp_lifetime
);
157 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
158 uint16_t lsp_refresh
);
159 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
160 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
161 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
162 const char *passwd
, u_char snp_auth
);
163 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
164 const char *passwd
, u_char snp_auth
);
165 void isis_vty_init(void);
167 /* Master of threads. */
168 extern struct thread_master
*master
;
170 #define DEBUG_ADJ_PACKETS (1<<0)
171 #define DEBUG_CHECKSUM_ERRORS (1<<1)
172 #define DEBUG_LOCAL_UPDATES (1<<2)
173 #define DEBUG_PROTOCOL_ERRORS (1<<3)
174 #define DEBUG_SNP_PACKETS (1<<4)
175 #define DEBUG_UPDATE_PACKETS (1<<5)
176 #define DEBUG_SPF_EVENTS (1<<6)
177 #define DEBUG_SPF_STATS (1<<7)
178 #define DEBUG_SPF_TRIGGERS (1<<8)
179 #define DEBUG_RTE_EVENTS (1<<9)
180 #define DEBUG_EVENTS (1<<10)
181 #define DEBUG_ZEBRA (1<<11)
182 #define DEBUG_PACKET_DUMP (1<<12)
183 #define DEBUG_LSP_GEN (1<<13)
184 #define DEBUG_LSP_SCHED (1<<14)
186 #define lsp_debug(...) \
188 if (isis->debugs & DEBUG_LSP_GEN) \
189 zlog_debug(__VA_ARGS__); \
192 #define sched_debug(...) \
194 if (isis->debugs & DEBUG_LSP_SCHED) \
195 zlog_debug(__VA_ARGS__); \
198 #define DEBUG_TE (1<<13)
200 #define IS_DEBUG_ISIS(x) (isis->debugs & x)