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 */
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
; /* IP next hops from this IS */
73 uint8_t max_area_addrs
; /* maximumAreaAdresses */
74 struct area_addr
*man_area_addrs
; /* manualAreaAddresses */
75 uint32_t debugs
; /* bitmap for debug */
76 time_t uptime
; /* when did we start */
77 struct thread
*t_dync_clean
; /* dynamic hostname cache cleanup thread */
78 uint32_t circuit_ids_used
[8]; /* 256 bits to track circuit ids 1 through 255 */
80 struct route_table
*ext_info
[REDIST_PROTOCOL_COUNT
];
85 extern struct isis
*isis
;
86 DECLARE_QOBJ_TYPE(isis_area
)
95 struct lsp_refresh_arg
{
96 struct isis_area
*area
;
100 /* for yang configuration */
101 enum isis_metric_style
{
102 ISIS_NARROW_METRIC
= 0,
104 ISIS_TRANSITION_METRIC
,
108 struct isis
*isis
; /* back pointer */
109 struct lspdb_head lspdb
[ISIS_LEVELS
]; /* link-state dbs */
110 struct isis_spftree
*spftree
[SPFTREE_COUNT
][ISIS_LEVELS
];
111 #define DEFAULT_LSP_MTU 1497
112 unsigned int lsp_mtu
; /* Size of LSPs to generate */
113 struct list
*circuit_list
; /* IS-IS circuits */
115 struct thread
*t_tick
; /* LSP walker */
116 struct thread
*t_lsp_refresh
[ISIS_LEVELS
];
117 struct timeval last_lsp_refresh_event
[ISIS_LEVELS
];
118 /* t_lsp_refresh is used in two ways:
119 * a) regular refresh of LSPs
120 * b) (possibly throttled) updates to LSPs
122 * The lsp_regenerate_pending flag tracks whether the timer is active
123 * for the a) or the b) case.
125 * It is of utmost importance to clear this flag when the timer is
126 * rescheduled for normal refresh, because otherwise, updates will
127 * be delayed until the next regular refresh.
129 int lsp_regenerate_pending
[ISIS_LEVELS
];
131 struct fabricd
*fabricd
;
136 struct isis_passwd area_passwd
;
137 struct isis_passwd domain_passwd
;
138 /* do we support dynamic hostnames? */
140 /* do we support new style metrics? */
143 /* identifies the routing instance */
145 /* area addresses for this area */
146 struct list
*area_addrs
;
147 uint16_t max_lsp_lifetime
[ISIS_LEVELS
];
148 char is_type
; /* level-1 level-1-2 or level-2-only */
149 /* are we overloaded? */
151 /* L1/L2 router identifier for inter-area traffic */
153 uint16_t lsp_refresh
[ISIS_LEVELS
];
154 /* minimum time allowed before lsp retransmission */
155 uint16_t lsp_gen_interval
[ISIS_LEVELS
];
156 /* min interval between between consequtive SPFs */
157 uint16_t min_spf_interval
[ISIS_LEVELS
];
158 /* the percentage of LSP mtu size used, before generating a new frag */
159 int lsp_frag_threshold
;
160 uint64_t lsp_gen_count
[ISIS_LEVELS
];
161 uint64_t lsp_purge_count
[ISIS_LEVELS
];
163 /* logging adjacency changes? */
164 uint8_t log_adj_changes
;
165 /* multi topology settings */
166 struct list
*mt_settings
;
167 /* MPLS-TE settings */
168 struct mpls_te_area
*mta
;
170 bool purge_originator
;
172 uint32_t circuit_state_changes
;
173 struct isis_redist redist_settings
[REDIST_PROTOCOL_COUNT
]
174 [ZEBRA_ROUTE_MAX
+ 1][ISIS_LEVELS
];
175 struct route_table
*ext_reach
[REDIST_PROTOCOL_COUNT
][ISIS_LEVELS
];
177 struct spf_backoff
*spf_delay_ietf
[ISIS_LEVELS
]; /*Structure with IETF
180 struct thread
*spf_timer
[ISIS_LEVELS
];
182 struct lsp_refresh_arg lsp_refresh_arg
[ISIS_LEVELS
];
184 pdu_counter_t pdu_tx_counters
;
185 pdu_counter_t pdu_rx_counters
;
186 uint64_t lsp_rxmt_count
;
190 DECLARE_QOBJ_TYPE(isis_area
)
192 void isis_init(void);
193 void isis_new(unsigned long process_id
, vrf_id_t vrf_id
);
194 struct isis_area
*isis_area_create(const char *);
195 struct isis_area
*isis_area_lookup(const char *);
196 int isis_area_get(struct vty
*vty
, const char *area_tag
);
197 int isis_area_destroy(const char *area_tag
);
198 void print_debug(struct vty
*, int, int);
199 struct isis_lsp
*lsp_for_arg(struct lspdb_head
*head
, const char *argv
);
201 void isis_area_invalidate_routes(struct isis_area
*area
, int levels
);
202 void isis_area_verify_routes(struct isis_area
*area
);
204 void isis_area_overload_bit_set(struct isis_area
*area
, bool overload_bit
);
205 void isis_area_attached_bit_set(struct isis_area
*area
, bool attached_bit
);
206 void isis_area_dynhostname_set(struct isis_area
*area
, bool dynhostname
);
207 void isis_area_metricstyle_set(struct isis_area
*area
, bool old_metric
,
209 void isis_area_lsp_mtu_set(struct isis_area
*area
, unsigned int lsp_mtu
);
210 void isis_area_is_type_set(struct isis_area
*area
, int is_type
);
211 void isis_area_max_lsp_lifetime_set(struct isis_area
*area
, int level
,
212 uint16_t max_lsp_lifetime
);
213 void isis_area_lsp_refresh_set(struct isis_area
*area
, int level
,
214 uint16_t lsp_refresh
);
215 /* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
216 int isis_area_passwd_unset(struct isis_area
*area
, int level
);
217 int isis_area_passwd_cleartext_set(struct isis_area
*area
, int level
,
218 const char *passwd
, uint8_t snp_auth
);
219 int isis_area_passwd_hmac_md5_set(struct isis_area
*area
, int level
,
220 const char *passwd
, uint8_t snp_auth
);
222 extern const struct frr_yang_module_info frr_isisd_info
;
223 extern void isis_northbound_init(void);
225 /* YANG northbound notifications */
226 extern void isis_notif_db_overload(const struct isis_area
*area
, bool overload
);
227 extern void isis_notif_lsp_too_large(const struct isis_circuit
*circuit
,
228 uint32_t pdu_size
, const char *lsp_id
);
229 extern void isis_notif_if_state_change(const struct isis_circuit
*circuit
,
231 extern void isis_notif_corrupted_lsp(const struct isis_area
*area
,
232 const char *lsp_id
); /* currently unused */
233 extern void isis_notif_lsp_exceed_max(const struct isis_area
*area
,
236 isis_notif_max_area_addr_mismatch(const struct isis_circuit
*circuit
,
237 uint8_t max_area_addrs
, const char *raw_pdu
);
239 isis_notif_authentication_type_failure(const struct isis_circuit
*circuit
,
240 const char *raw_pdu
);
242 isis_notif_authentication_failure(const struct isis_circuit
*circuit
,
243 const char *raw_pdu
);
244 extern void isis_notif_adj_state_change(const struct isis_adjacency
*adj
,
245 int new_state
, const char *reason
);
246 extern void isis_notif_reject_adjacency(const struct isis_circuit
*circuit
,
248 const char *raw_pdu
);
249 extern void isis_notif_area_mismatch(const struct isis_circuit
*circuit
,
250 const char *raw_pdu
);
251 extern void isis_notif_lsp_received(const struct isis_circuit
*circuit
,
252 const char *lsp_id
, uint32_t seqno
,
253 uint32_t timestamp
, const char *sys_id
);
254 extern void isis_notif_lsp_gen(const struct isis_area
*area
, const char *lsp_id
,
255 uint32_t seqno
, uint32_t timestamp
);
256 extern void isis_notif_id_len_mismatch(const struct isis_circuit
*circuit
,
257 uint8_t rcv_id_len
, const char *raw_pdu
);
258 extern void isis_notif_version_skew(const struct isis_circuit
*circuit
,
259 uint8_t version
, const char *raw_pdu
);
260 extern void isis_notif_lsp_error(const struct isis_circuit
*circuit
,
261 const char *lsp_id
, const char *raw_pdu
,
262 uint32_t offset
, uint8_t tlv_type
);
263 extern void isis_notif_seqno_skipped(const struct isis_circuit
*circuit
,
265 extern void isis_notif_own_lsp_purge(const struct isis_circuit
*circuit
,
268 /* Master of threads. */
269 extern struct thread_master
*master
;
271 #define DEBUG_ADJ_PACKETS (1<<0)
272 #define DEBUG_SNP_PACKETS (1<<1)
273 #define DEBUG_UPDATE_PACKETS (1<<2)
274 #define DEBUG_SPF_EVENTS (1<<3)
275 #define DEBUG_RTE_EVENTS (1<<4)
276 #define DEBUG_EVENTS (1<<5)
277 #define DEBUG_PACKET_DUMP (1<<6)
278 #define DEBUG_LSP_GEN (1<<7)
279 #define DEBUG_LSP_SCHED (1<<8)
280 #define DEBUG_FLOODING (1<<9)
281 #define DEBUG_BFD (1<<10)
282 #define DEBUG_TX_QUEUE (1<<11)
284 #define lsp_debug(...) \
286 if (isis->debugs & DEBUG_LSP_GEN) \
287 zlog_debug(__VA_ARGS__); \
290 #define sched_debug(...) \
292 if (isis->debugs & DEBUG_LSP_SCHED) \
293 zlog_debug(__VA_ARGS__); \
296 #define DEBUG_TE DEBUG_LSP_GEN
298 #define IS_DEBUG_ISIS(x) (isis->debugs & x)