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 */
63 unsigned long process_id
;
65 uint8_t sysid
[ISIS_SYS_ID_LEN
]; /* SystemID for this IS */
66 uint32_t router_id
; /* Router ID from zebra */
67 struct list
*area_list
; /* list of IS-IS areas */
68 struct list
*init_circ_list
;
69 struct list
*nexthops
; /* IPv4 next hops from this IS */
70 struct list
*nexthops6
; /* IPv6 next hops from this IS */
71 uint8_t max_area_addrs
; /* maximumAreaAdresses */
72 struct area_addr
*man_area_addrs
; /* manualAreaAddresses */
73 uint32_t debugs
; /* bitmap for debug */
74 time_t uptime
; /* when did we start */
75 struct thread
*t_dync_clean
; /* dynamic hostname cache cleanup thread */
76 uint32_t circuit_ids_used
[8]; /* 256 bits to track circuit ids 1 through 255 */
78 struct route_table
*ext_info
[REDIST_PROTOCOL_COUNT
];
83 extern struct isis
*isis
;
84 DECLARE_QOBJ_TYPE(isis_area
)
93 struct lsp_refresh_arg
{
94 struct isis_area
*area
;
99 struct isis
*isis
; /* back pointer */
100 dict_t
*lspdb
[ISIS_LEVELS
]; /* link-state dbs */
101 struct isis_spftree
*spftree
[SPFTREE_COUNT
][ISIS_LEVELS
];
102 #define DEFAULT_LSP_MTU 1497
103 unsigned int lsp_mtu
; /* Size of LSPs to generate */
104 struct list
*circuit_list
; /* IS-IS circuits */
106 struct thread
*t_tick
; /* LSP walker */
107 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
108 struct timeval last_lsp_refresh_event
[ISIS_LEVELS
];
109 /* t_lsp_refresh is used in two ways:
110 * a) regular refresh of LSPs
111 * b) (possibly throttled) updates to LSPs
113 * The lsp_regenerate_pending flag tracks whether the timer is active
114 * for the a) or the b) case.
116 * It is of utmost importance to clear this flag when the timer is
117 * rescheduled for normal refresh, because otherwise, updates will
118 * be delayed until the next regular refresh.
120 int lsp_regenerate_pending
[ISIS_LEVELS
];
122 struct fabricd
*fabricd
;
127 struct isis_passwd area_passwd
;
128 struct isis_passwd domain_passwd
;
129 /* do we support dynamic hostnames? */
131 /* do we support new style metrics? */
134 /* identifies the routing instance */
136 /* area addresses for this area */
137 struct list
*area_addrs
;
138 uint16_t max_lsp_lifetime
[ISIS_LEVELS
];
139 char is_type
; /* level-1 level-1-2 or level-2-only */
140 /* are we overloaded? */
142 /* L1/L2 router identifier for inter-area traffic */
144 uint16_t lsp_refresh
[ISIS_LEVELS
];
145 /* minimum time allowed before lsp retransmission */
146 uint16_t lsp_gen_interval
[ISIS_LEVELS
];
147 /* min interval between between consequtive SPFs */
148 uint16_t min_spf_interval
[ISIS_LEVELS
];
149 /* the percentage of LSP mtu size used, before generating a new frag */
150 int lsp_frag_threshold
;
152 /* logging adjacency changes? */
153 uint8_t log_adj_changes
;
154 /* multi topology settings */
155 struct list
*mt_settings
;
157 bool purge_originator
;
159 uint32_t circuit_state_changes
;
160 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
161 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
162 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
164 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
167 struct thread
*spf_timer
[ISIS_LEVELS
];
169 struct lsp_refresh_arg lsp_refresh_arg
[ISIS_LEVELS
];
173 DECLARE_QOBJ_TYPE(isis_area
)
175 void isis_init(void);
176 void isis_new(unsigned long);
177 struct isis_area
*isis_area_create(const char *);
178 struct isis_area
*isis_area_lookup(const char *);
179 int isis_area_get(struct vty
*vty
, const char *area_tag
);
180 void print_debug(struct vty
*, int, int);
182 void isis_area_invalidate_routes(struct isis_area
*area
, int levels
);
183 void isis_area_verify_routes(struct isis_area
*area
);
185 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
186 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
187 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
188 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
190 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
191 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
192 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
193 uint16_t max_lsp_lifetime
);
194 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
195 uint16_t lsp_refresh
);
196 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
197 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
198 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
199 const char *passwd
, uint8_t snp_auth
);
200 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
201 const char *passwd
, uint8_t snp_auth
);
203 /* Master of threads. */
204 extern struct thread_master
*master
;
206 #define DEBUG_ADJ_PACKETS (1<<0)
207 #define DEBUG_SNP_PACKETS (1<<1)
208 #define DEBUG_UPDATE_PACKETS (1<<2)
209 #define DEBUG_SPF_EVENTS (1<<3)
210 #define DEBUG_RTE_EVENTS (1<<4)
211 #define DEBUG_EVENTS (1<<5)
212 #define DEBUG_PACKET_DUMP (1<<6)
213 #define DEBUG_LSP_GEN (1<<7)
214 #define DEBUG_LSP_SCHED (1<<8)
215 #define DEBUG_FABRICD_FLOODING (1<<9)
216 #define DEBUG_BFD (1<<10)
218 #define lsp_debug(...) \
220 if (isis->debugs & DEBUG_LSP_GEN) \
221 zlog_debug(__VA_ARGS__); \
224 #define sched_debug(...) \
226 if (isis->debugs & DEBUG_LSP_SCHED) \
227 zlog_debug(__VA_ARGS__); \
230 #define DEBUG_TE DEBUG_LSP_GEN
232 #define IS_DEBUG_ISIS(x) (isis->debugs & x)