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1 | /* | |
2 | * IS-IS Rout(e)ing protocol - isisd.h | |
3 | * | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
5 | * Tampere University of Technology | |
6 | * Institute of Communications Engineering | |
7 | * | |
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) | |
11 | * any later version. | |
12 | * | |
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 | |
16 | * more details. | |
17 | * | |
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 | |
21 | */ | |
22 | ||
23 | #ifndef ISISD_H | |
24 | #define ISISD_H | |
25 | ||
26 | #include "vty.h" | |
27 | ||
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" | |
34 | #include "isis_lsp.h" | |
35 | #include "isis_memory.h" | |
36 | #include "qobj.h" | |
37 | ||
38 | #ifdef FABRICD | |
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 | |
46 | #else | |
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); | |
55 | #endif | |
56 | ||
57 | extern struct zebra_privs_t isisd_privs; | |
58 | ||
59 | /* uncomment if you are a developer in bug hunt */ | |
60 | /* #define EXTREME_DEBUG */ | |
61 | ||
62 | struct fabricd; | |
63 | ||
64 | struct isis { | |
65 | vrf_id_t vrf_id; | |
66 | unsigned long process_id; | |
67 | int sysid_set; | |
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 */ | |
79 | ||
80 | struct route_table *ext_info[REDIST_PROTOCOL_COUNT]; | |
81 | ||
82 | QOBJ_FIELDS | |
83 | }; | |
84 | ||
85 | extern struct isis *isis; | |
86 | DECLARE_QOBJ_TYPE(isis_area) | |
87 | ||
88 | enum spf_tree_id { | |
89 | SPFTREE_IPV4 = 0, | |
90 | SPFTREE_IPV6, | |
91 | SPFTREE_DSTSRC, | |
92 | SPFTREE_COUNT | |
93 | }; | |
94 | ||
95 | struct lsp_refresh_arg { | |
96 | struct isis_area *area; | |
97 | int level; | |
98 | }; | |
99 | ||
100 | /* for yang configuration */ | |
101 | enum isis_metric_style { | |
102 | ISIS_NARROW_METRIC = 0, | |
103 | ISIS_WIDE_METRIC, | |
104 | ISIS_TRANSITION_METRIC, | |
105 | }; | |
106 | ||
107 | struct isis_area { | |
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 */ | |
114 | struct flags flags; | |
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 | |
121 | * | |
122 | * The lsp_regenerate_pending flag tracks whether the timer is active | |
123 | * for the a) or the b) case. | |
124 | * | |
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. | |
128 | */ | |
129 | int lsp_regenerate_pending[ISIS_LEVELS]; | |
130 | ||
131 | struct fabricd *fabricd; | |
132 | ||
133 | /* | |
134 | * Configurables | |
135 | */ | |
136 | struct isis_passwd area_passwd; | |
137 | struct isis_passwd domain_passwd; | |
138 | /* do we support dynamic hostnames? */ | |
139 | char dynhostname; | |
140 | /* do we support new style metrics? */ | |
141 | char newmetric; | |
142 | char oldmetric; | |
143 | /* identifies the routing instance */ | |
144 | char *area_tag; | |
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? */ | |
150 | char overload_bit; | |
151 | /* L1/L2 router identifier for inter-area traffic */ | |
152 | char attached_bit; | |
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]; | |
162 | int ip_circuits; | |
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; | |
169 | int ipv6_circuits; | |
170 | bool purge_originator; | |
171 | /* Counters */ | |
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]; | |
176 | ||
177 | struct spf_backoff *spf_delay_ietf[ISIS_LEVELS]; /*Structure with IETF | |
178 | SPF algo | |
179 | parameters*/ | |
180 | struct thread *spf_timer[ISIS_LEVELS]; | |
181 | ||
182 | struct lsp_refresh_arg lsp_refresh_arg[ISIS_LEVELS]; | |
183 | ||
184 | pdu_counter_t pdu_tx_counters; | |
185 | pdu_counter_t pdu_rx_counters; | |
186 | uint64_t lsp_rxmt_count; | |
187 | ||
188 | QOBJ_FIELDS | |
189 | }; | |
190 | DECLARE_QOBJ_TYPE(isis_area) | |
191 | ||
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); | |
200 | ||
201 | void isis_area_invalidate_routes(struct isis_area *area, int levels); | |
202 | void isis_area_verify_routes(struct isis_area *area); | |
203 | ||
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, | |
208 | bool new_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); | |
221 | ||
222 | /* Master of threads. */ | |
223 | extern struct thread_master *master; | |
224 | ||
225 | #define DEBUG_ADJ_PACKETS (1<<0) | |
226 | #define DEBUG_SNP_PACKETS (1<<1) | |
227 | #define DEBUG_UPDATE_PACKETS (1<<2) | |
228 | #define DEBUG_SPF_EVENTS (1<<3) | |
229 | #define DEBUG_RTE_EVENTS (1<<4) | |
230 | #define DEBUG_EVENTS (1<<5) | |
231 | #define DEBUG_PACKET_DUMP (1<<6) | |
232 | #define DEBUG_LSP_GEN (1<<7) | |
233 | #define DEBUG_LSP_SCHED (1<<8) | |
234 | #define DEBUG_FLOODING (1<<9) | |
235 | #define DEBUG_BFD (1<<10) | |
236 | #define DEBUG_TX_QUEUE (1<<11) | |
237 | ||
238 | #define lsp_debug(...) \ | |
239 | do { \ | |
240 | if (isis->debugs & DEBUG_LSP_GEN) \ | |
241 | zlog_debug(__VA_ARGS__); \ | |
242 | } while (0) | |
243 | ||
244 | #define sched_debug(...) \ | |
245 | do { \ | |
246 | if (isis->debugs & DEBUG_LSP_SCHED) \ | |
247 | zlog_debug(__VA_ARGS__); \ | |
248 | } while (0) | |
249 | ||
250 | #define DEBUG_TE DEBUG_LSP_GEN | |
251 | ||
252 | #define IS_DEBUG_ISIS(x) (isis->debugs & x) | |
253 | ||
254 | #endif /* ISISD_H */ |