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 #include "isisd/isis_constants.h"
29 #include "isisd/isis_common.h"
30 #include "isisd/isis_redist.h"
31 #include "isis_flags.h"
33 #include "isis_memory.h"
36 extern struct zebra_privs_t isisd_privs
;
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 */
56 uint32_t circuit_ids_used
[8]; /* 256 bits to track circuit ids 0 through 255 */
58 struct route_table
*ext_info
[REDIST_PROTOCOL_COUNT
];
63 extern struct isis
*isis
;
64 DECLARE_QOBJ_TYPE(isis_area
)
67 struct isis
*isis
; /* back pointer */
68 dict_t
*lspdb
[ISIS_LEVELS
]; /* link-state dbs */
69 struct isis_spftree
*spftree
[ISIS_LEVELS
]; /* The v4 SPTs */
70 struct route_table
*route_table
[ISIS_LEVELS
]; /* IPv4 routes */
71 struct isis_spftree
*spftree6
[ISIS_LEVELS
]; /* The v6 SPTs */
72 struct route_table
*route_table6
[ISIS_LEVELS
]; /* IPv6 routes */
74 /* clang-format off */
75 #define DEFAULT_LSP_MTU 1497
76 unsigned int lsp_mtu
; /* Size of LSPs to generate */
77 struct list
*circuit_list
; /* IS-IS circuits */
79 struct thread
*t_tick
; /* LSP walker */
80 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
81 /* t_lsp_refresh is used in two ways:
82 * a) regular refresh of LSPs
83 * b) (possibly throttled) updates to LSPs
85 * The lsp_regenerate_pending flag tracks whether the timer is active
86 * for the a) or the b) case.
88 * It is of utmost importance to clear this flag when the timer is
89 * rescheduled for normal refresh, because otherwise, updates will
90 * be delayed until the next regular refresh.
92 int lsp_regenerate_pending
[ISIS_LEVELS
];
97 struct isis_passwd area_passwd
;
98 struct isis_passwd domain_passwd
;
99 /* do we support dynamic hostnames? */
101 /* do we support new style metrics? */
104 /* identifies the routing instance */
106 /* area addresses for this area */
107 struct list
*area_addrs
;
108 u_int16_t max_lsp_lifetime
[ISIS_LEVELS
];
109 char is_type
; /* level-1 level-1-2 or level-2-only */
110 /* are we overloaded? */
112 /* L1/L2 router identifier for inter-area traffic */
114 u_int16_t lsp_refresh
[ISIS_LEVELS
];
115 /* minimum time allowed before lsp retransmission */
116 u_int16_t lsp_gen_interval
[ISIS_LEVELS
];
117 /* min interval between between consequtive SPFs */
118 u_int16_t min_spf_interval
[ISIS_LEVELS
];
119 /* the percentage of LSP mtu size used, before generating a new frag */
120 int lsp_frag_threshold
;
122 /* logging adjacency changes? */
123 u_char log_adj_changes
;
124 /* multi topology settings */
125 struct list
*mt_settings
;
128 u_int32_t circuit_state_changes
;
129 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
130 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
131 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
133 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
136 struct thread
*spf_timer
[ISIS_LEVELS
];
140 DECLARE_QOBJ_TYPE(isis_area
)
142 void isis_init(void);
143 void isis_new(unsigned long);
144 struct isis_area
*isis_area_create(const char *);
145 struct isis_area
*isis_area_lookup(const char *);
146 int isis_area_get(struct vty
*vty
, const char *area_tag
);
147 void print_debug(struct vty
*, int, int);
149 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
150 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
151 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
152 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
154 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
155 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
156 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
157 uint16_t max_lsp_lifetime
);
158 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
159 uint16_t lsp_refresh
);
160 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
161 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
162 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
163 const char *passwd
, u_char snp_auth
);
164 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
165 const char *passwd
, u_char snp_auth
);
166 void isis_vty_init(void);
168 /* Master of threads. */
169 extern struct thread_master
*master
;
171 #define DEBUG_ADJ_PACKETS (1<<0)
172 #define DEBUG_CHECKSUM_ERRORS (1<<1)
173 #define DEBUG_LOCAL_UPDATES (1<<2)
174 #define DEBUG_PROTOCOL_ERRORS (1<<3)
175 #define DEBUG_SNP_PACKETS (1<<4)
176 #define DEBUG_UPDATE_PACKETS (1<<5)
177 #define DEBUG_SPF_EVENTS (1<<6)
178 #define DEBUG_SPF_STATS (1<<7)
179 #define DEBUG_SPF_TRIGGERS (1<<8)
180 #define DEBUG_RTE_EVENTS (1<<9)
181 #define DEBUG_EVENTS (1<<10)
182 #define DEBUG_ZEBRA (1<<11)
183 #define DEBUG_PACKET_DUMP (1<<12)
184 #define DEBUG_LSP_GEN (1<<13)
185 #define DEBUG_LSP_SCHED (1<<14)
187 #define lsp_debug(...) \
189 if (isis->debugs & DEBUG_LSP_GEN) \
190 zlog_debug(__VA_ARGS__); \
193 #define sched_debug(...) \
195 if (isis->debugs & DEBUG_LSP_SCHED) \
196 zlog_debug(__VA_ARGS__); \
199 #define DEBUG_TE (1<<13)
201 #define IS_DEBUG_ISIS(x) (isis->debugs & x)