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"
37 static const bool fabricd
= true;
38 #define PROTO_TYPE ZEBRA_ROUTE_OPENFABRIC
39 #define PROTO_NAME "openfabric"
40 #define PROTO_HELP "OpenFabric routing protocol\n"
41 #define PROTO_REDIST_STR FRR_REDIST_STR_FABRICD
42 #define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_FABRICD
43 #define ROUTER_NODE OPENFABRIC_NODE
45 static const bool fabricd
= false;
46 #define PROTO_TYPE ZEBRA_ROUTE_ISIS
47 #define PROTO_NAME "isis"
48 #define PROTO_HELP "IS-IS routing protocol\n"
49 #define PROTO_REDIST_STR FRR_REDIST_STR_ISISD
50 #define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_ISISD
51 #define ROUTER_NODE ISIS_NODE
54 extern struct zebra_privs_t isisd_privs
;
56 /* uncomment if you are a developer in bug hunt */
57 /* #define EXTREME_DEBUG */
58 /* #define EXTREME_DICT_DEBUG */
61 unsigned long process_id
;
63 uint8_t sysid
[ISIS_SYS_ID_LEN
]; /* SystemID for this IS */
64 uint32_t router_id
; /* Router ID from zebra */
65 struct list
*area_list
; /* list of IS-IS areas */
66 struct list
*init_circ_list
;
67 struct list
*nexthops
; /* IPv4 next hops from this IS */
68 struct list
*nexthops6
; /* IPv6 next hops from this IS */
69 uint8_t max_area_addrs
; /* maximumAreaAdresses */
70 struct area_addr
*man_area_addrs
; /* manualAreaAddresses */
71 uint32_t debugs
; /* bitmap for debug */
72 time_t uptime
; /* when did we start */
73 struct thread
*t_dync_clean
; /* dynamic hostname cache cleanup thread */
74 uint32_t circuit_ids_used
[8]; /* 256 bits to track circuit ids 1 through 255 */
76 struct route_table
*ext_info
[REDIST_PROTOCOL_COUNT
];
81 extern struct isis
*isis
;
82 DECLARE_QOBJ_TYPE(isis_area
)
92 struct isis
*isis
; /* back pointer */
93 dict_t
*lspdb
[ISIS_LEVELS
]; /* link-state dbs */
94 struct isis_spftree
*spftree
[SPFTREE_COUNT
][ISIS_LEVELS
];
95 #define DEFAULT_LSP_MTU 1497
96 unsigned int lsp_mtu
; /* Size of LSPs to generate */
97 struct list
*circuit_list
; /* IS-IS circuits */
99 struct thread
*t_tick
; /* LSP walker */
100 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
101 /* t_lsp_refresh is used in two ways:
102 * a) regular refresh of LSPs
103 * b) (possibly throttled) updates to LSPs
105 * The lsp_regenerate_pending flag tracks whether the timer is active
106 * for the a) or the b) case.
108 * It is of utmost importance to clear this flag when the timer is
109 * rescheduled for normal refresh, because otherwise, updates will
110 * be delayed until the next regular refresh.
112 int lsp_regenerate_pending
[ISIS_LEVELS
];
117 struct isis_passwd area_passwd
;
118 struct isis_passwd domain_passwd
;
119 /* do we support dynamic hostnames? */
121 /* do we support new style metrics? */
124 /* identifies the routing instance */
126 /* area addresses for this area */
127 struct list
*area_addrs
;
128 uint16_t max_lsp_lifetime
[ISIS_LEVELS
];
129 char is_type
; /* level-1 level-1-2 or level-2-only */
130 /* are we overloaded? */
132 /* L1/L2 router identifier for inter-area traffic */
134 uint16_t lsp_refresh
[ISIS_LEVELS
];
135 /* minimum time allowed before lsp retransmission */
136 uint16_t lsp_gen_interval
[ISIS_LEVELS
];
137 /* min interval between between consequtive SPFs */
138 uint16_t min_spf_interval
[ISIS_LEVELS
];
139 /* the percentage of LSP mtu size used, before generating a new frag */
140 int lsp_frag_threshold
;
142 /* logging adjacency changes? */
143 uint8_t log_adj_changes
;
144 /* multi topology settings */
145 struct list
*mt_settings
;
148 uint32_t circuit_state_changes
;
149 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
150 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
151 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
153 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
156 struct thread
*spf_timer
[ISIS_LEVELS
];
160 DECLARE_QOBJ_TYPE(isis_area
)
162 void isis_init(void);
163 void isis_new(unsigned long);
164 struct isis_area
*isis_area_create(const char *);
165 struct isis_area
*isis_area_lookup(const char *);
166 int isis_area_get(struct vty
*vty
, const char *area_tag
);
167 void print_debug(struct vty
*, int, int);
169 void isis_area_invalidate_routes(struct isis_area
*area
, int levels
);
170 void isis_area_verify_routes(struct isis_area
*area
);
172 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
173 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
174 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
175 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
177 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
178 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
179 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
180 uint16_t max_lsp_lifetime
);
181 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
182 uint16_t lsp_refresh
);
183 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
184 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
185 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
186 const char *passwd
, uint8_t snp_auth
);
187 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
188 const char *passwd
, uint8_t snp_auth
);
189 void isis_vty_init(void);
191 /* Master of threads. */
192 extern struct thread_master
*master
;
194 #define DEBUG_ADJ_PACKETS (1<<0)
195 #define DEBUG_CHECKSUM_ERRORS (1<<1)
196 #define DEBUG_LOCAL_UPDATES (1<<2)
197 #define DEBUG_PROTOCOL_ERRORS (1<<3)
198 #define DEBUG_SNP_PACKETS (1<<4)
199 #define DEBUG_UPDATE_PACKETS (1<<5)
200 #define DEBUG_SPF_EVENTS (1<<6)
201 #define DEBUG_SPF_STATS (1<<7)
202 #define DEBUG_SPF_TRIGGERS (1<<8)
203 #define DEBUG_RTE_EVENTS (1<<9)
204 #define DEBUG_EVENTS (1<<10)
205 #define DEBUG_ZEBRA (1<<11)
206 #define DEBUG_PACKET_DUMP (1<<12)
207 #define DEBUG_LSP_GEN (1<<13)
208 #define DEBUG_LSP_SCHED (1<<14)
210 #define lsp_debug(...) \
212 if (isis->debugs & DEBUG_LSP_GEN) \
213 zlog_debug(__VA_ARGS__); \
216 #define sched_debug(...) \
218 if (isis->debugs & DEBUG_LSP_SCHED) \
219 zlog_debug(__VA_ARGS__); \
222 #define DEBUG_TE (1<<13)
224 #define IS_DEBUG_ISIS(x) (isis->debugs & x)