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 */
67 unsigned long process_id
;
69 uint8_t sysid
[ISIS_SYS_ID_LEN
]; /* SystemID for this IS */
70 uint32_t router_id
; /* Router ID from zebra */
71 struct list
*area_list
; /* list of IS-IS areas */
72 struct list
*init_circ_list
;
73 struct list
*nexthops
; /* IP 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
;
101 /* for yang configuration */
102 enum isis_metric_style
{
103 ISIS_NARROW_METRIC
= 0,
105 ISIS_TRANSITION_METRIC
,
109 struct isis
*isis
; /* back pointer */
110 struct lspdb_head lspdb
[ISIS_LEVELS
]; /* link-state dbs */
111 struct isis_spftree
*spftree
[SPFTREE_COUNT
][ISIS_LEVELS
];
112 #define DEFAULT_LSP_MTU 1497
113 unsigned int lsp_mtu
; /* Size of LSPs to generate */
114 struct list
*circuit_list
; /* IS-IS circuits */
116 struct thread
*t_tick
; /* LSP walker */
117 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
118 struct timeval last_lsp_refresh_event
[ISIS_LEVELS
];
119 /* t_lsp_refresh is used in two ways:
120 * a) regular refresh of LSPs
121 * b) (possibly throttled) updates to LSPs
123 * The lsp_regenerate_pending flag tracks whether the timer is active
124 * for the a) or the b) case.
126 * It is of utmost importance to clear this flag when the timer is
127 * rescheduled for normal refresh, because otherwise, updates will
128 * be delayed until the next regular refresh.
130 int lsp_regenerate_pending
[ISIS_LEVELS
];
132 struct fabricd
*fabricd
;
137 struct isis_passwd area_passwd
;
138 struct isis_passwd domain_passwd
;
139 /* do we support dynamic hostnames? */
141 /* do we support new style metrics? */
144 /* identifies the routing instance */
146 /* area addresses for this area */
147 struct list
*area_addrs
;
148 uint16_t max_lsp_lifetime
[ISIS_LEVELS
];
149 char is_type
; /* level-1 level-1-2 or level-2-only */
150 /* are we overloaded? */
152 /* L1/L2 router identifier for inter-area traffic */
154 uint16_t lsp_refresh
[ISIS_LEVELS
];
155 /* minimum time allowed before lsp retransmission */
156 uint16_t lsp_gen_interval
[ISIS_LEVELS
];
157 /* min interval between between consequtive SPFs */
158 uint16_t min_spf_interval
[ISIS_LEVELS
];
159 /* the percentage of LSP mtu size used, before generating a new frag */
160 int lsp_frag_threshold
;
161 uint64_t lsp_gen_count
[ISIS_LEVELS
];
162 uint64_t lsp_purge_count
[ISIS_LEVELS
];
164 /* logging adjacency changes? */
165 uint8_t log_adj_changes
;
166 /* multi topology settings */
167 struct list
*mt_settings
;
168 /* MPLS-TE settings */
169 struct mpls_te_area
*mta
;
171 bool purge_originator
;
173 uint32_t circuit_state_changes
;
174 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
175 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
176 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
178 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
181 struct thread
*spf_timer
[ISIS_LEVELS
];
183 struct lsp_refresh_arg lsp_refresh_arg
[ISIS_LEVELS
];
185 pdu_counter_t pdu_tx_counters
;
186 pdu_counter_t pdu_rx_counters
;
187 uint64_t lsp_rxmt_count
;
191 DECLARE_QOBJ_TYPE(isis_area
)
193 void isis_init(void);
194 void isis_new(unsigned long process_id
, vrf_id_t vrf_id
);
195 struct isis_area
*isis_area_create(const char *);
196 struct isis_area
*isis_area_lookup(const char *);
197 int isis_area_get(struct vty
*vty
, const char *area_tag
);
198 int isis_area_destroy(const char *area_tag
);
199 void print_debug(struct vty
*, int, int);
200 struct isis_lsp
*lsp_for_arg(struct lspdb_head
*head
, const char *argv
);
202 void isis_area_invalidate_routes(struct isis_area
*area
, int levels
);
203 void isis_area_verify_routes(struct isis_area
*area
);
205 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
206 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
207 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
208 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
210 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
211 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
212 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
213 uint16_t max_lsp_lifetime
);
214 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
215 uint16_t lsp_refresh
);
216 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
217 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
218 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
219 const char *passwd
, uint8_t snp_auth
);
220 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
221 const char *passwd
, uint8_t snp_auth
);
223 extern const struct frr_yang_module_info frr_isisd_info
;
224 extern void isis_northbound_init(void);
226 /* YANG northbound notifications */
227 extern void isis_notif_db_overload(const struct isis_area
*area
, bool overload
);
228 extern void isis_notif_lsp_too_large(const struct isis_circuit
*circuit
,
229 uint32_t pdu_size
, const char *lsp_id
);
230 extern void isis_notif_if_state_change(const struct isis_circuit
*circuit
,
232 extern void isis_notif_corrupted_lsp(const struct isis_area
*area
,
233 const char *lsp_id
); /* currently unused */
234 extern void isis_notif_lsp_exceed_max(const struct isis_area
*area
,
237 isis_notif_max_area_addr_mismatch(const struct isis_circuit
*circuit
,
238 uint8_t max_area_addrs
, const char *raw_pdu
);
240 isis_notif_authentication_type_failure(const struct isis_circuit
*circuit
,
241 const char *raw_pdu
);
243 isis_notif_authentication_failure(const struct isis_circuit
*circuit
,
244 const char *raw_pdu
);
245 extern void isis_notif_adj_state_change(const struct isis_adjacency
*adj
,
246 int new_state
, const char *reason
);
247 extern void isis_notif_reject_adjacency(const struct isis_circuit
*circuit
,
249 const char *raw_pdu
);
250 extern void isis_notif_area_mismatch(const struct isis_circuit
*circuit
,
251 const char *raw_pdu
);
252 extern void isis_notif_lsp_received(const struct isis_circuit
*circuit
,
253 const char *lsp_id
, uint32_t seqno
,
254 uint32_t timestamp
, const char *sys_id
);
255 extern void isis_notif_lsp_gen(const struct isis_area
*area
, const char *lsp_id
,
256 uint32_t seqno
, uint32_t timestamp
);
257 extern void isis_notif_id_len_mismatch(const struct isis_circuit
*circuit
,
258 uint8_t rcv_id_len
, const char *raw_pdu
);
259 extern void isis_notif_version_skew(const struct isis_circuit
*circuit
,
260 uint8_t version
, const char *raw_pdu
);
261 extern void isis_notif_lsp_error(const struct isis_circuit
*circuit
,
262 const char *lsp_id
, const char *raw_pdu
,
263 uint32_t offset
, uint8_t tlv_type
);
264 extern void isis_notif_seqno_skipped(const struct isis_circuit
*circuit
,
266 extern void isis_notif_own_lsp_purge(const struct isis_circuit
*circuit
,
269 /* Master of threads. */
270 extern struct thread_master
*master
;
272 #define DEBUG_ADJ_PACKETS (1<<0)
273 #define DEBUG_SNP_PACKETS (1<<1)
274 #define DEBUG_UPDATE_PACKETS (1<<2)
275 #define DEBUG_SPF_EVENTS (1<<3)
276 #define DEBUG_RTE_EVENTS (1<<4)
277 #define DEBUG_EVENTS (1<<5)
278 #define DEBUG_PACKET_DUMP (1<<6)
279 #define DEBUG_LSP_GEN (1<<7)
280 #define DEBUG_LSP_SCHED (1<<8)
281 #define DEBUG_FLOODING (1<<9)
282 #define DEBUG_BFD (1<<10)
283 #define DEBUG_TX_QUEUE (1<<11)
285 #define lsp_debug(...) \
287 if (isis->debugs & DEBUG_LSP_GEN) \
288 zlog_debug(__VA_ARGS__); \
291 #define sched_debug(...) \
293 if (isis->debugs & DEBUG_LSP_SCHED) \
294 zlog_debug(__VA_ARGS__); \
297 #define DEBUG_TE DEBUG_LSP_GEN
299 #define IS_DEBUG_ISIS(x) (isis->debugs & x)