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 "isisd/isis_pdu_counter.h"
32 #include "isisd/isis_circuit.h"
33 #include "isis_flags.h"
35 #include "isis_memory.h"
39 static const bool fabricd
= true;
40 #define PROTO_TYPE ZEBRA_ROUTE_OPENFABRIC
41 #define PROTO_NAME "openfabric"
42 #define PROTO_HELP "OpenFabric routing protocol\n"
43 #define PROTO_REDIST_STR FRR_REDIST_STR_FABRICD
44 #define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_FABRICD
45 #define ROUTER_NODE OPENFABRIC_NODE
47 static const bool fabricd
= false;
48 #define PROTO_TYPE ZEBRA_ROUTE_ISIS
49 #define PROTO_NAME "isis"
50 #define PROTO_HELP "IS-IS routing protocol\n"
51 #define PROTO_REDIST_STR FRR_REDIST_STR_ISISD
52 #define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_ISISD
53 #define ROUTER_NODE ISIS_NODE
54 extern void isis_cli_init(void);
57 extern struct zebra_privs_t isisd_privs
;
59 /* uncomment if you are a developer in bug hunt */
60 /* #define EXTREME_DEBUG */
61 /* #define EXTREME_DICT_DEBUG */
66 unsigned long process_id
;
68 uint8_t sysid
[ISIS_SYS_ID_LEN
]; /* SystemID for this IS */
69 uint32_t router_id
; /* Router ID from zebra */
70 struct list
*area_list
; /* list of IS-IS areas */
71 struct list
*init_circ_list
;
72 struct list
*nexthops
; /* IPv4 next hops from this IS */
73 struct list
*nexthops6
; /* IPv6 next hops from this IS */
74 uint8_t max_area_addrs
; /* maximumAreaAdresses */
75 struct area_addr
*man_area_addrs
; /* manualAreaAddresses */
76 uint32_t debugs
; /* bitmap for debug */
77 time_t uptime
; /* when did we start */
78 struct thread
*t_dync_clean
; /* dynamic hostname cache cleanup thread */
79 uint32_t circuit_ids_used
[8]; /* 256 bits to track circuit ids 1 through 255 */
81 struct route_table
*ext_info
[REDIST_PROTOCOL_COUNT
];
86 extern struct isis
*isis
;
87 DECLARE_QOBJ_TYPE(isis_area
)
96 struct lsp_refresh_arg
{
97 struct isis_area
*area
;
102 struct isis
*isis
; /* back pointer */
103 dict_t
*lspdb
[ISIS_LEVELS
]; /* link-state dbs */
104 struct isis_spftree
*spftree
[SPFTREE_COUNT
][ISIS_LEVELS
];
105 #define DEFAULT_LSP_MTU 1497
106 unsigned int lsp_mtu
; /* Size of LSPs to generate */
107 struct list
*circuit_list
; /* IS-IS circuits */
109 struct thread
*t_tick
; /* LSP walker */
110 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
111 struct timeval last_lsp_refresh_event
[ISIS_LEVELS
];
112 /* t_lsp_refresh is used in two ways:
113 * a) regular refresh of LSPs
114 * b) (possibly throttled) updates to LSPs
116 * The lsp_regenerate_pending flag tracks whether the timer is active
117 * for the a) or the b) case.
119 * It is of utmost importance to clear this flag when the timer is
120 * rescheduled for normal refresh, because otherwise, updates will
121 * be delayed until the next regular refresh.
123 int lsp_regenerate_pending
[ISIS_LEVELS
];
125 struct fabricd
*fabricd
;
130 struct isis_passwd area_passwd
;
131 struct isis_passwd domain_passwd
;
132 /* do we support dynamic hostnames? */
134 /* do we support new style metrics? */
137 /* identifies the routing instance */
139 /* area addresses for this area */
140 struct list
*area_addrs
;
141 uint16_t max_lsp_lifetime
[ISIS_LEVELS
];
142 char is_type
; /* level-1 level-1-2 or level-2-only */
143 /* are we overloaded? */
145 /* L1/L2 router identifier for inter-area traffic */
147 uint16_t lsp_refresh
[ISIS_LEVELS
];
148 /* minimum time allowed before lsp retransmission */
149 uint16_t lsp_gen_interval
[ISIS_LEVELS
];
150 /* min interval between between consequtive SPFs */
151 uint16_t min_spf_interval
[ISIS_LEVELS
];
152 /* the percentage of LSP mtu size used, before generating a new frag */
153 int lsp_frag_threshold
;
154 uint64_t lsp_gen_count
[ISIS_LEVELS
];
155 uint64_t lsp_purge_count
[ISIS_LEVELS
];
157 /* logging adjacency changes? */
158 uint8_t log_adj_changes
;
159 /* multi topology settings */
160 struct list
*mt_settings
;
162 bool purge_originator
;
164 uint32_t circuit_state_changes
;
165 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
166 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
167 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
169 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
172 struct thread
*spf_timer
[ISIS_LEVELS
];
174 struct lsp_refresh_arg lsp_refresh_arg
[ISIS_LEVELS
];
176 pdu_counter_t pdu_tx_counters
;
177 pdu_counter_t pdu_rx_counters
;
178 uint64_t lsp_rxmt_count
;
182 DECLARE_QOBJ_TYPE(isis_area
)
184 void isis_init(void);
185 void isis_new(unsigned long);
186 struct isis_area
*isis_area_create(const char *);
187 struct isis_area
*isis_area_lookup(const char *);
188 int isis_area_get(struct vty
*vty
, const char *area_tag
);
189 int isis_area_destroy(const char *area_tag
);
190 void print_debug(struct vty
*, int, int);
191 struct isis_lsp
*lsp_for_arg(const char *argv
, dict_t
*lspdb
);
193 void isis_area_invalidate_routes(struct isis_area
*area
, int levels
);
194 void isis_area_verify_routes(struct isis_area
*area
);
196 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
197 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
198 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
199 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
201 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
202 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
203 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
204 uint16_t max_lsp_lifetime
);
205 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
206 uint16_t lsp_refresh
);
207 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
208 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
209 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
210 const char *passwd
, uint8_t snp_auth
);
211 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
212 const char *passwd
, uint8_t snp_auth
);
214 extern const struct frr_yang_module_info frr_isisd_info
;
215 extern void isis_northbound_init(void);
216 /* Master of threads. */
217 extern struct thread_master
*master
;
219 #define DEBUG_ADJ_PACKETS (1<<0)
220 #define DEBUG_SNP_PACKETS (1<<1)
221 #define DEBUG_UPDATE_PACKETS (1<<2)
222 #define DEBUG_SPF_EVENTS (1<<3)
223 #define DEBUG_RTE_EVENTS (1<<4)
224 #define DEBUG_EVENTS (1<<5)
225 #define DEBUG_PACKET_DUMP (1<<6)
226 #define DEBUG_LSP_GEN (1<<7)
227 #define DEBUG_LSP_SCHED (1<<8)
228 #define DEBUG_FLOODING (1<<9)
229 #define DEBUG_BFD (1<<10)
230 #define DEBUG_TX_QUEUE (1<<11)
232 #define lsp_debug(...) \
234 if (isis->debugs & DEBUG_LSP_GEN) \
235 zlog_debug(__VA_ARGS__); \
238 #define sched_debug(...) \
240 if (isis->debugs & DEBUG_LSP_SCHED) \
241 zlog_debug(__VA_ARGS__); \
244 #define DEBUG_TE DEBUG_LSP_GEN
246 #define IS_DEBUG_ISIS(x) (isis->debugs & x)