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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_circuit.h | |
3 | * | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
d62a17ae | 5 | * Tampere University of Technology |
eb5d44eb | 6 | * Institute of Communications Engineering |
7 | * | |
d62a17ae | 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) | |
eb5d44eb | 11 | * any later version. |
12 | * | |
d62a17ae | 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 | |
eb5d44eb | 16 | * more details. |
896014f4 DL |
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 | |
eb5d44eb | 21 | */ |
eb5d44eb | 22 | #include <zebra.h> |
37da8c01 | 23 | #ifdef GNU_LINUX |
eb5d44eb | 24 | #include <net/ethernet.h> |
37da8c01 | 25 | #else |
26 | #include <netinet/if_ether.h> | |
27 | #endif | |
eb5d44eb | 28 | |
29 | #include "log.h" | |
30 | #include "memory.h" | |
b2d7c082 | 31 | #include "vrf.h" |
eb5d44eb | 32 | #include "if.h" |
33 | #include "linklist.h" | |
34 | #include "command.h" | |
35 | #include "thread.h" | |
f8c06e2c | 36 | #include "vty.h" |
eb5d44eb | 37 | #include "hash.h" |
38 | #include "prefix.h" | |
39 | #include "stream.h" | |
676a4ea3 | 40 | #include "qobj.h" |
20600086 | 41 | #include "lib/northbound_cli.h" |
eb5d44eb | 42 | |
eb5d44eb | 43 | #include "isisd/isis_constants.h" |
44 | #include "isisd/isis_common.h" | |
3f045a08 | 45 | #include "isisd/isis_flags.h" |
eb5d44eb | 46 | #include "isisd/isis_circuit.h" |
eb5d44eb | 47 | #include "isisd/isis_lsp.h" |
48 | #include "isisd/isis_pdu.h" | |
49 | #include "isisd/isis_network.h" | |
50 | #include "isisd/isis_misc.h" | |
51 | #include "isisd/isis_constants.h" | |
52 | #include "isisd/isis_adjacency.h" | |
53 | #include "isisd/isis_dr.h" | |
eb5d44eb | 54 | #include "isisd/isisd.h" |
55 | #include "isisd/isis_csm.h" | |
56 | #include "isisd/isis_events.h" | |
f8c06e2c | 57 | #include "isisd/isis_te.h" |
064f4896 | 58 | #include "isisd/isis_mt.h" |
54ece698 | 59 | #include "isisd/isis_errors.h" |
9b39405f | 60 | #include "isisd/isis_tx_queue.h" |
2a1c520e | 61 | #include "isisd/isis_nb.h" |
eb5d44eb | 62 | |
676a4ea3 DL |
63 | DEFINE_QOBJ_TYPE(isis_circuit) |
64 | ||
ef7bd2a3 DS |
65 | DEFINE_HOOK(isis_if_new_hook, (struct interface *ifp), (ifp)) |
66 | ||
41b36e90 PJ |
67 | /* |
68 | * Prototypes. | |
69 | */ | |
41b36e90 PJ |
70 | int isis_if_new_hook(struct interface *); |
71 | int isis_if_delete_hook(struct interface *); | |
72 | ||
4d762f26 | 73 | struct isis_circuit *isis_circuit_new(void) |
eb5d44eb | 74 | { |
d62a17ae | 75 | struct isis_circuit *circuit; |
76 | int i; | |
77 | ||
78 | circuit = XCALLOC(MTYPE_ISIS_CIRCUIT, sizeof(struct isis_circuit)); | |
d62a17ae | 79 | |
80 | /* | |
81 | * Default values | |
82 | */ | |
cc50ddb2 EDP |
83 | #ifndef FABRICD |
84 | circuit->is_type = yang_get_default_enum( | |
85 | "/frr-interface:lib/interface/frr-isisd:isis/circuit-type"); | |
86 | circuit->flags = 0; | |
87 | ||
88 | circuit->pad_hellos = yang_get_default_bool( | |
89 | "/frr-interface:lib/interface/frr-isisd:isis/hello/padding"); | |
90 | circuit->hello_interval[0] = yang_get_default_uint32( | |
91 | "/frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-1"); | |
92 | circuit->hello_interval[1] = yang_get_default_uint32( | |
93 | "/frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-2"); | |
94 | circuit->hello_multiplier[0] = yang_get_default_uint32( | |
95 | "/frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-1"); | |
96 | circuit->hello_multiplier[1] = yang_get_default_uint32( | |
97 | "/frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-2"); | |
98 | circuit->csnp_interval[0] = yang_get_default_uint16( | |
99 | "/frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-1"); | |
100 | circuit->csnp_interval[1] = yang_get_default_uint16( | |
101 | "/frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-2"); | |
102 | circuit->psnp_interval[0] = yang_get_default_uint16( | |
103 | "/frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-1"); | |
104 | circuit->psnp_interval[1] = yang_get_default_uint16( | |
105 | "/frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-2"); | |
106 | circuit->priority[0] = yang_get_default_uint8( | |
107 | "/frr-interface:lib/interface/frr-isisd:isis/priority/level-1"); | |
108 | circuit->priority[1] = yang_get_default_uint8( | |
109 | "/frr-interface:lib/interface/frr-isisd:isis/priority/level-2"); | |
110 | circuit->metric[0] = yang_get_default_uint32( | |
111 | "/frr-interface:lib/interface/frr-isisd:isis/metric/level-1"); | |
112 | circuit->metric[1] = yang_get_default_uint32( | |
113 | "/frr-interface:lib/interface/frr-isisd:isis/metric/level-2"); | |
114 | circuit->te_metric[0] = yang_get_default_uint32( | |
115 | "/frr-interface:lib/interface/frr-isisd:isis/metric/level-1"); | |
116 | circuit->te_metric[1] = yang_get_default_uint32( | |
117 | "/frr-interface:lib/interface/frr-isisd:isis/metric/level-2"); | |
118 | ||
119 | for (i = 0; i < 2; i++) { | |
120 | circuit->level_arg[i].level = i + 1; | |
121 | circuit->level_arg[i].circuit = circuit; | |
122 | } | |
123 | #else | |
d62a17ae | 124 | circuit->is_type = IS_LEVEL_1_AND_2; |
125 | circuit->flags = 0; | |
126 | circuit->pad_hellos = 1; | |
127 | for (i = 0; i < 2; i++) { | |
128 | circuit->hello_interval[i] = DEFAULT_HELLO_INTERVAL; | |
129 | circuit->hello_multiplier[i] = DEFAULT_HELLO_MULTIPLIER; | |
130 | circuit->csnp_interval[i] = DEFAULT_CSNP_INTERVAL; | |
131 | circuit->psnp_interval[i] = DEFAULT_PSNP_INTERVAL; | |
132 | circuit->priority[i] = DEFAULT_PRIORITY; | |
133 | circuit->metric[i] = DEFAULT_CIRCUIT_METRIC; | |
134 | circuit->te_metric[i] = DEFAULT_CIRCUIT_METRIC; | |
7da4aa3c CF |
135 | circuit->level_arg[i].level = i + 1; |
136 | circuit->level_arg[i].circuit = circuit; | |
d62a17ae | 137 | } |
cc50ddb2 | 138 | #endif /* ifndef FABRICD */ |
d62a17ae | 139 | |
d62a17ae | 140 | circuit_mt_init(circuit); |
141 | ||
142 | QOBJ_REG(circuit, isis_circuit); | |
143 | ||
144 | return circuit; | |
eb5d44eb | 145 | } |
146 | ||
d62a17ae | 147 | void isis_circuit_del(struct isis_circuit *circuit) |
3f045a08 | 148 | { |
d62a17ae | 149 | if (!circuit) |
150 | return; | |
3f045a08 | 151 | |
d62a17ae | 152 | QOBJ_UNREG(circuit); |
676a4ea3 | 153 | |
d62a17ae | 154 | isis_circuit_if_unbind(circuit, circuit->interface); |
3f045a08 | 155 | |
d62a17ae | 156 | circuit_mt_finish(circuit); |
064f4896 | 157 | |
d62a17ae | 158 | /* and lastly the circuit itself */ |
159 | XFREE(MTYPE_ISIS_CIRCUIT, circuit); | |
3f045a08 | 160 | |
d62a17ae | 161 | return; |
3f045a08 JB |
162 | } |
163 | ||
d62a17ae | 164 | void isis_circuit_configure(struct isis_circuit *circuit, |
165 | struct isis_area *area) | |
eb5d44eb | 166 | { |
d62a17ae | 167 | assert(area); |
168 | circuit->area = area; | |
169 | ||
170 | /* | |
171 | * Whenever the is-type of an area is changed, the is-type of each | |
172 | * circuit | |
173 | * in that area is updated to a non-empty subset of the area is-type. | |
174 | * Inversely, when configuring a new circuit, this property should be | |
175 | * ensured as well. | |
176 | */ | |
177 | if (area->is_type != IS_LEVEL_1_AND_2) | |
178 | circuit->is_type = area->is_type; | |
179 | ||
180 | /* | |
181 | * Add the circuit into area | |
182 | */ | |
183 | listnode_add(area->circuit_list, circuit); | |
184 | ||
185 | circuit->idx = flags_get_index(&area->flags); | |
186 | ||
187 | return; | |
eb5d44eb | 188 | } |
189 | ||
d62a17ae | 190 | void isis_circuit_deconfigure(struct isis_circuit *circuit, |
191 | struct isis_area *area) | |
eb5d44eb | 192 | { |
d62a17ae | 193 | /* Free the index of SRM and SSN flags */ |
194 | flags_free_index(&area->flags, circuit->idx); | |
195 | circuit->idx = 0; | |
196 | /* Remove circuit from area */ | |
197 | assert(circuit->area == area); | |
198 | listnode_delete(area->circuit_list, circuit); | |
199 | circuit->area = NULL; | |
200 | ||
201 | return; | |
eb5d44eb | 202 | } |
203 | ||
d62a17ae | 204 | struct isis_circuit *circuit_lookup_by_ifp(struct interface *ifp, |
205 | struct list *list) | |
eb5d44eb | 206 | { |
d62a17ae | 207 | struct isis_circuit *circuit = NULL; |
208 | struct listnode *node; | |
f390d2c7 | 209 | |
d62a17ae | 210 | if (!list) |
211 | return NULL; | |
f390d2c7 | 212 | |
d62a17ae | 213 | for (ALL_LIST_ELEMENTS_RO(list, node, circuit)) |
214 | if (circuit->interface == ifp) { | |
215 | assert(ifp->info == circuit); | |
216 | return circuit; | |
217 | } | |
3f045a08 | 218 | |
d62a17ae | 219 | return NULL; |
eb5d44eb | 220 | } |
221 | ||
d62a17ae | 222 | struct isis_circuit *circuit_scan_by_ifp(struct interface *ifp) |
eb5d44eb | 223 | { |
d62a17ae | 224 | struct isis_area *area; |
225 | struct listnode *node; | |
226 | struct isis_circuit *circuit; | |
227 | ||
228 | if (ifp->info) | |
229 | return (struct isis_circuit *)ifp->info; | |
230 | ||
231 | if (isis->area_list) { | |
232 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) { | |
233 | circuit = | |
234 | circuit_lookup_by_ifp(ifp, area->circuit_list); | |
235 | if (circuit) | |
236 | return circuit; | |
237 | } | |
238 | } | |
239 | return circuit_lookup_by_ifp(ifp, isis->init_circ_list); | |
eb5d44eb | 240 | } |
241 | ||
d62a17ae | 242 | void isis_circuit_add_addr(struct isis_circuit *circuit, |
243 | struct connected *connected) | |
eb5d44eb | 244 | { |
d62a17ae | 245 | struct listnode *node; |
246 | struct prefix_ipv4 *ipv4; | |
4690c7d7 | 247 | #if defined(EXTREME_DEBUG) |
d62a17ae | 248 | char buf[PREFIX2STR_BUFFER]; |
4690c7d7 | 249 | #endif |
d62a17ae | 250 | struct prefix_ipv6 *ipv6; |
f891f443 | 251 | |
d62a17ae | 252 | if (connected->address->family == AF_INET) { |
d7c0a89a | 253 | uint32_t addr = connected->address->u.prefix4.s_addr; |
d62a17ae | 254 | addr = ntohl(addr); |
255 | if (IPV4_NET0(addr) || IPV4_NET127(addr) || IN_CLASSD(addr) | |
256 | || IPV4_LINKLOCAL(addr)) | |
257 | return; | |
3f045a08 | 258 | |
d62a17ae | 259 | for (ALL_LIST_ELEMENTS_RO(circuit->ip_addrs, node, ipv4)) |
260 | if (prefix_same((struct prefix *)ipv4, | |
261 | connected->address)) | |
262 | return; | |
3f045a08 | 263 | |
d62a17ae | 264 | ipv4 = prefix_ipv4_new(); |
265 | ipv4->prefixlen = connected->address->prefixlen; | |
266 | ipv4->prefix = connected->address->u.prefix4; | |
267 | listnode_add(circuit->ip_addrs, ipv4); | |
f8c06e2c | 268 | |
1b3f47d0 OD |
269 | /* Update Local IP address parameter if MPLS TE is enable */ |
270 | if (circuit->ext && IS_MPLS_TE(circuit->ext)) { | |
271 | circuit->ext->local_addr.s_addr = ipv4->prefix.s_addr; | |
272 | SET_SUBTLV(circuit->ext, EXT_LOCAL_ADDR); | |
273 | } | |
f8c06e2c | 274 | |
d62a17ae | 275 | if (circuit->area) |
276 | lsp_regenerate_schedule(circuit->area, circuit->is_type, | |
277 | 0); | |
f891f443 | 278 | |
eb5d44eb | 279 | #ifdef EXTREME_DEBUG |
d62a17ae | 280 | prefix2str(connected->address, buf, sizeof(buf)); |
c59f88c8 CF |
281 | zlog_debug("Added IP address %s to circuit %s", buf, |
282 | circuit->interface->name); | |
f390d2c7 | 283 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 284 | } |
285 | if (connected->address->family == AF_INET6) { | |
286 | if (IN6_IS_ADDR_LOOPBACK(&connected->address->u.prefix6)) | |
287 | return; | |
288 | ||
289 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_link, node, ipv6)) | |
290 | if (prefix_same((struct prefix *)ipv6, | |
291 | connected->address)) | |
292 | return; | |
293 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_non_link, node, ipv6)) | |
294 | if (prefix_same((struct prefix *)ipv6, | |
295 | connected->address)) | |
296 | return; | |
297 | ||
298 | ipv6 = prefix_ipv6_new(); | |
299 | ipv6->prefixlen = connected->address->prefixlen; | |
300 | ipv6->prefix = connected->address->u.prefix6; | |
301 | ||
302 | if (IN6_IS_ADDR_LINKLOCAL(&ipv6->prefix)) | |
303 | listnode_add(circuit->ipv6_link, ipv6); | |
304 | else | |
305 | listnode_add(circuit->ipv6_non_link, ipv6); | |
306 | if (circuit->area) | |
307 | lsp_regenerate_schedule(circuit->area, circuit->is_type, | |
308 | 0); | |
f891f443 | 309 | |
eb5d44eb | 310 | #ifdef EXTREME_DEBUG |
d62a17ae | 311 | prefix2str(connected->address, buf, sizeof(buf)); |
c59f88c8 CF |
312 | zlog_debug("Added IPv6 address %s to circuit %s", buf, |
313 | circuit->interface->name); | |
f390d2c7 | 314 | #endif /* EXTREME_DEBUG */ |
d62a17ae | 315 | } |
316 | return; | |
eb5d44eb | 317 | } |
318 | ||
d62a17ae | 319 | void isis_circuit_del_addr(struct isis_circuit *circuit, |
320 | struct connected *connected) | |
eb5d44eb | 321 | { |
d62a17ae | 322 | struct prefix_ipv4 *ipv4, *ip = NULL; |
323 | struct listnode *node; | |
324 | char buf[PREFIX2STR_BUFFER]; | |
325 | struct prefix_ipv6 *ipv6, *ip6 = NULL; | |
326 | int found = 0; | |
327 | ||
328 | if (connected->address->family == AF_INET) { | |
329 | ipv4 = prefix_ipv4_new(); | |
330 | ipv4->prefixlen = connected->address->prefixlen; | |
331 | ipv4->prefix = connected->address->u.prefix4; | |
332 | ||
333 | for (ALL_LIST_ELEMENTS_RO(circuit->ip_addrs, node, ip)) | |
334 | if (prefix_same((struct prefix *)ip, | |
335 | (struct prefix *)ipv4)) | |
336 | break; | |
337 | ||
338 | if (ip) { | |
339 | listnode_delete(circuit->ip_addrs, ip); | |
63265b5c | 340 | prefix_ipv4_free(&ip); |
d62a17ae | 341 | if (circuit->area) |
342 | lsp_regenerate_schedule(circuit->area, | |
343 | circuit->is_type, 0); | |
344 | } else { | |
345 | prefix2str(connected->address, buf, sizeof(buf)); | |
346 | zlog_warn( | |
d6951e5e | 347 | "Nonexistent ip address %s removal attempt from circuit %s", |
c59f88c8 | 348 | buf, circuit->interface->name); |
d62a17ae | 349 | zlog_warn("Current ip addresses on %s:", |
350 | circuit->interface->name); | |
351 | for (ALL_LIST_ELEMENTS_RO(circuit->ip_addrs, node, | |
352 | ip)) { | |
353 | prefix2str(ip, buf, sizeof(buf)); | |
354 | zlog_warn(" %s", buf); | |
355 | } | |
356 | zlog_warn("End of addresses"); | |
357 | } | |
358 | ||
63265b5c | 359 | prefix_ipv4_free(&ipv4); |
f891f443 | 360 | } |
d62a17ae | 361 | if (connected->address->family == AF_INET6) { |
362 | ipv6 = prefix_ipv6_new(); | |
363 | ipv6->prefixlen = connected->address->prefixlen; | |
364 | ipv6->prefix = connected->address->u.prefix6; | |
365 | ||
366 | if (IN6_IS_ADDR_LINKLOCAL(&ipv6->prefix)) { | |
367 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_link, node, | |
368 | ip6)) { | |
369 | if (prefix_same((struct prefix *)ip6, | |
370 | (struct prefix *)ipv6)) | |
371 | break; | |
372 | } | |
373 | if (ip6) { | |
374 | listnode_delete(circuit->ipv6_link, ip6); | |
63265b5c | 375 | prefix_ipv6_free(&ip6); |
d62a17ae | 376 | found = 1; |
377 | } | |
378 | } else { | |
379 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_non_link, node, | |
380 | ip6)) { | |
381 | if (prefix_same((struct prefix *)ip6, | |
382 | (struct prefix *)ipv6)) | |
383 | break; | |
384 | } | |
385 | if (ip6) { | |
386 | listnode_delete(circuit->ipv6_non_link, ip6); | |
63265b5c | 387 | prefix_ipv6_free(&ip6); |
d62a17ae | 388 | found = 1; |
389 | } | |
390 | } | |
391 | ||
392 | if (!found) { | |
393 | prefix2str(connected->address, buf, sizeof(buf)); | |
394 | zlog_warn( | |
d6951e5e | 395 | "Nonexistent ip address %s removal attempt from circuit %s", |
c59f88c8 | 396 | buf, circuit->interface->name); |
d62a17ae | 397 | zlog_warn("Current ip addresses on %s:", |
398 | circuit->interface->name); | |
399 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_link, node, | |
400 | ip6)) { | |
401 | prefix2str((struct prefix *)ip6, (char *)buf, | |
c28135f3 | 402 | sizeof(buf)); |
d62a17ae | 403 | zlog_warn(" %s", buf); |
404 | } | |
405 | zlog_warn(" -----"); | |
406 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_non_link, node, | |
407 | ip6)) { | |
408 | prefix2str((struct prefix *)ip6, (char *)buf, | |
c28135f3 | 409 | sizeof(buf)); |
d62a17ae | 410 | zlog_warn(" %s", buf); |
411 | } | |
412 | zlog_warn("End of addresses"); | |
413 | } else if (circuit->area) | |
414 | lsp_regenerate_schedule(circuit->area, circuit->is_type, | |
415 | 0); | |
416 | ||
63265b5c | 417 | prefix_ipv6_free(&ipv6); |
f891f443 | 418 | } |
d62a17ae | 419 | return; |
420 | } | |
e8aca32f | 421 | |
0849c75e | 422 | static uint8_t isis_circuit_id_gen(struct isis *isis, struct interface *ifp) |
d62a17ae | 423 | { |
068c8222 CF |
424 | /* Circuit ids MUST be unique for any broadcast circuits. Otherwise, |
425 | * Pseudo-Node LSPs cannot be generated correctly. | |
426 | * | |
98c5bc15 | 427 | * Currently, allocate one circuit ID for any circuit, limiting the total |
068c8222 CF |
428 | * numer of circuits IS-IS can run on to 255. |
429 | * | |
98c5bc15 | 430 | * We should revisit this when implementing 3-way adjacencies for p2p, since |
068c8222 CF |
431 | * we then have extended interface IDs available. |
432 | */ | |
433 | uint8_t id = ifp->ifindex; | |
d62a17ae | 434 | unsigned int i; |
d62a17ae | 435 | |
068c8222 CF |
436 | for (i = 0; i < 256; i++) { |
437 | if (id && !_ISIS_CHECK_FLAG(isis->circuit_ids_used, id)) | |
d62a17ae | 438 | break; |
068c8222 | 439 | id++; |
f891f443 | 440 | } |
441 | ||
068c8222 | 442 | if (i == 256) { |
996c9314 LB |
443 | zlog_warn("Could not allocate a circuit id for '%s'", |
444 | ifp->name); | |
068c8222 | 445 | return 0; |
f891f443 | 446 | } |
e8aca32f | 447 | |
0849c75e | 448 | _ISIS_SET_FLAG(isis->circuit_ids_used, id); |
d62a17ae | 449 | return id; |
3f045a08 JB |
450 | } |
451 | ||
d62a17ae | 452 | void isis_circuit_if_add(struct isis_circuit *circuit, struct interface *ifp) |
eb5d44eb | 453 | { |
d62a17ae | 454 | struct listnode *node, *nnode; |
455 | struct connected *conn; | |
456 | ||
d62a17ae | 457 | isis_circuit_if_bind(circuit, ifp); |
d62a17ae | 458 | |
459 | if (if_is_broadcast(ifp)) { | |
65f18157 | 460 | if (fabricd || circuit->circ_type_config == CIRCUIT_T_P2P) |
d62a17ae | 461 | circuit->circ_type = CIRCUIT_T_P2P; |
462 | else | |
463 | circuit->circ_type = CIRCUIT_T_BROADCAST; | |
464 | } else if (if_is_pointopoint(ifp)) { | |
465 | circuit->circ_type = CIRCUIT_T_P2P; | |
466 | } else if (if_is_loopback(ifp)) { | |
467 | circuit->circ_type = CIRCUIT_T_LOOPBACK; | |
468 | circuit->is_passive = 1; | |
469 | } else { | |
470 | /* It's normal in case of loopback etc. */ | |
471 | if (isis->debugs & DEBUG_EVENTS) | |
472 | zlog_debug("isis_circuit_if_add: unsupported media"); | |
473 | circuit->circ_type = CIRCUIT_T_UNKNOWN; | |
474 | } | |
475 | ||
476 | circuit->ip_addrs = list_new(); | |
477 | circuit->ipv6_link = list_new(); | |
478 | circuit->ipv6_non_link = list_new(); | |
479 | ||
480 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, conn)) | |
481 | isis_circuit_add_addr(circuit, conn); | |
1b3f47d0 | 482 | |
eb5d44eb | 483 | } |
484 | ||
d62a17ae | 485 | void isis_circuit_if_del(struct isis_circuit *circuit, struct interface *ifp) |
eb5d44eb | 486 | { |
d62a17ae | 487 | struct listnode *node, *nnode; |
488 | struct connected *conn; | |
489 | ||
490 | assert(circuit->interface == ifp); | |
491 | ||
492 | /* destroy addresses */ | |
493 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, conn)) | |
494 | isis_circuit_del_addr(circuit, conn); | |
495 | ||
496 | if (circuit->ip_addrs) { | |
497 | assert(listcount(circuit->ip_addrs) == 0); | |
6a154c88 | 498 | list_delete(&circuit->ip_addrs); |
d62a17ae | 499 | } |
500 | ||
501 | if (circuit->ipv6_link) { | |
502 | assert(listcount(circuit->ipv6_link) == 0); | |
6a154c88 | 503 | list_delete(&circuit->ipv6_link); |
d62a17ae | 504 | } |
505 | ||
506 | if (circuit->ipv6_non_link) { | |
507 | assert(listcount(circuit->ipv6_non_link) == 0); | |
6a154c88 | 508 | list_delete(&circuit->ipv6_non_link); |
d62a17ae | 509 | } |
510 | ||
511 | circuit->circ_type = CIRCUIT_T_UNKNOWN; | |
eb5d44eb | 512 | } |
513 | ||
d62a17ae | 514 | void isis_circuit_if_bind(struct isis_circuit *circuit, struct interface *ifp) |
3f045a08 | 515 | { |
d62a17ae | 516 | assert(circuit != NULL); |
517 | assert(ifp != NULL); | |
518 | if (circuit->interface) | |
519 | assert(circuit->interface == ifp); | |
520 | else | |
521 | circuit->interface = ifp; | |
522 | if (ifp->info) | |
523 | assert(ifp->info == circuit); | |
524 | else | |
525 | ifp->info = circuit; | |
3f045a08 JB |
526 | } |
527 | ||
d62a17ae | 528 | void isis_circuit_if_unbind(struct isis_circuit *circuit, struct interface *ifp) |
eb5d44eb | 529 | { |
d62a17ae | 530 | assert(circuit != NULL); |
531 | assert(ifp != NULL); | |
532 | assert(circuit->interface == ifp); | |
533 | assert(ifp->info == circuit); | |
534 | circuit->interface = NULL; | |
535 | ifp->info = NULL; | |
3f045a08 | 536 | } |
f390d2c7 | 537 | |
d62a17ae | 538 | static void isis_circuit_update_all_srmflags(struct isis_circuit *circuit, |
539 | int is_set) | |
3f045a08 | 540 | { |
d62a17ae | 541 | struct isis_area *area; |
542 | struct isis_lsp *lsp; | |
d62a17ae | 543 | int level; |
544 | ||
545 | assert(circuit); | |
546 | area = circuit->area; | |
547 | assert(area); | |
548 | for (level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { | |
9b39405f CF |
549 | if (!(level & circuit->is_type)) |
550 | continue; | |
551 | ||
4bef0ec4 | 552 | if (!lspdb_count(&area->lspdb[level - 1])) |
9b39405f CF |
553 | continue; |
554 | ||
81fddbe7 | 555 | frr_each (lspdb, &area->lspdb[level - 1], lsp) { |
9b39405f CF |
556 | if (is_set) { |
557 | isis_tx_queue_add(circuit->tx_queue, lsp, | |
558 | TX_LSP_NORMAL); | |
559 | } else { | |
560 | isis_tx_queue_del(circuit->tx_queue, lsp); | |
d62a17ae | 561 | } |
562 | } | |
563 | } | |
eb5d44eb | 564 | } |
565 | ||
d62a17ae | 566 | size_t isis_circuit_pdu_size(struct isis_circuit *circuit) |
b20ccb3a | 567 | { |
d62a17ae | 568 | return ISO_MTU(circuit); |
b20ccb3a CF |
569 | } |
570 | ||
d62a17ae | 571 | void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream) |
b20ccb3a | 572 | { |
d62a17ae | 573 | size_t stream_size = isis_circuit_pdu_size(circuit); |
574 | ||
575 | if (!*stream) { | |
576 | *stream = stream_new(stream_size); | |
577 | } else { | |
578 | if (STREAM_SIZE(*stream) != stream_size) | |
db3c830a | 579 | stream_resize_inplace(stream, stream_size); |
d62a17ae | 580 | stream_reset(*stream); |
581 | } | |
b20ccb3a CF |
582 | } |
583 | ||
d62a17ae | 584 | void isis_circuit_prepare(struct isis_circuit *circuit) |
5904f19f | 585 | { |
b0dd98e7 | 586 | #if ISIS_METHOD != ISIS_METHOD_DLPI |
d62a17ae | 587 | thread_add_read(master, isis_receive, circuit, circuit->fd, |
588 | &circuit->t_read); | |
5904f19f | 589 | #else |
d62a17ae | 590 | thread_add_timer_msec(master, isis_receive, circuit, |
591 | listcount(circuit->area->circuit_list) * 100, | |
592 | &circuit->t_read); | |
5904f19f RW |
593 | #endif |
594 | } | |
595 | ||
d62a17ae | 596 | int isis_circuit_up(struct isis_circuit *circuit) |
eb5d44eb | 597 | { |
d62a17ae | 598 | int retv; |
599 | ||
600 | /* Set the flags for all the lsps of the circuit. */ | |
601 | isis_circuit_update_all_srmflags(circuit, 1); | |
602 | ||
603 | if (circuit->state == C_STATE_UP) | |
604 | return ISIS_OK; | |
605 | ||
606 | if (circuit->is_passive) | |
607 | return ISIS_OK; | |
608 | ||
609 | if (circuit->area->lsp_mtu > isis_circuit_pdu_size(circuit)) { | |
af4c2728 | 610 | flog_err( |
1a7ecb96 | 611 | EC_ISIS_CONFIG, |
d62a17ae | 612 | "Interface MTU %zu on %s is too low to support area lsp mtu %u!", |
613 | isis_circuit_pdu_size(circuit), | |
614 | circuit->interface->name, circuit->area->lsp_mtu); | |
615 | isis_circuit_update_all_srmflags(circuit, 0); | |
616 | return ISIS_ERROR; | |
617 | } | |
618 | ||
619 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) { | |
0849c75e CF |
620 | circuit->circuit_id = isis_circuit_id_gen(isis, circuit->interface); |
621 | if (!circuit->circuit_id) { | |
af4c2728 | 622 | flog_err( |
1a7ecb96 | 623 | EC_ISIS_CONFIG, |
54ece698 | 624 | "There are already 255 broadcast circuits active!"); |
0849c75e CF |
625 | return ISIS_ERROR; |
626 | } | |
627 | ||
d62a17ae | 628 | /* |
629 | * Get the Hardware Address | |
630 | */ | |
631 | if (circuit->interface->hw_addr_len != ETH_ALEN) { | |
632 | zlog_warn("unsupported link layer"); | |
633 | } else { | |
634 | memcpy(circuit->u.bc.snpa, circuit->interface->hw_addr, | |
635 | ETH_ALEN); | |
636 | } | |
3f045a08 | 637 | #ifdef EXTREME_DEGUG |
d62a17ae | 638 | zlog_debug("isis_circuit_if_add: if_id %d, isomtu %d snpa %s", |
639 | circuit->interface->ifindex, ISO_MTU(circuit), | |
640 | snpa_print(circuit->u.bc.snpa)); | |
3f045a08 | 641 | #endif /* EXTREME_DEBUG */ |
3f045a08 | 642 | |
d62a17ae | 643 | circuit->u.bc.adjdb[0] = list_new(); |
644 | circuit->u.bc.adjdb[1] = list_new(); | |
645 | ||
646 | /* | |
647 | * ISO 10589 - 8.4.1 Enabling of broadcast circuits | |
648 | */ | |
649 | ||
650 | /* initilizing the hello sending threads | |
651 | * for a broadcast IF | |
652 | */ | |
653 | ||
654 | /* 8.4.1 a) commence sending of IIH PDUs */ | |
655 | ||
7c4f7aab CF |
656 | for (int level = ISIS_LEVEL1; level <= ISIS_LEVEL2; level++) { |
657 | if (!(circuit->is_type & level)) | |
658 | continue; | |
659 | ||
a0a707ee | 660 | send_hello_sched(circuit, level, TRIGGERED_IIH_DELAY); |
7c4f7aab CF |
661 | circuit->u.bc.lan_neighs[level - 1] = list_new(); |
662 | ||
663 | thread_add_timer(master, isis_run_dr, | |
664 | &circuit->level_arg[level - 1], | |
665 | 2 * circuit->hello_interval[level - 1], | |
666 | &circuit->u.bc.t_run_dr[level - 1]); | |
d62a17ae | 667 | } |
668 | ||
669 | /* 8.4.1 b) FIXME: solicit ES - 8.4.6 */ | |
670 | /* 8.4.1 c) FIXME: listen for ESH PDUs */ | |
d4670f51 | 671 | } else if (circuit->circ_type == CIRCUIT_T_P2P) { |
d62a17ae | 672 | /* initializing the hello send threads |
673 | * for a ptp IF | |
674 | */ | |
675 | circuit->u.p2p.neighbor = NULL; | |
a0a707ee | 676 | send_hello_sched(circuit, 0, TRIGGERED_IIH_DELAY); |
d62a17ae | 677 | } |
678 | ||
679 | /* initializing PSNP timers */ | |
680 | if (circuit->is_type & IS_LEVEL_1) | |
681 | thread_add_timer( | |
682 | master, send_l1_psnp, circuit, | |
683 | isis_jitter(circuit->psnp_interval[0], PSNP_JITTER), | |
684 | &circuit->t_send_psnp[0]); | |
685 | ||
686 | if (circuit->is_type & IS_LEVEL_2) | |
687 | thread_add_timer( | |
688 | master, send_l2_psnp, circuit, | |
689 | isis_jitter(circuit->psnp_interval[1], PSNP_JITTER), | |
690 | &circuit->t_send_psnp[1]); | |
691 | ||
692 | /* unified init for circuits; ignore warnings below this level */ | |
693 | retv = isis_sock_init(circuit); | |
694 | if (retv != ISIS_OK) { | |
695 | isis_circuit_down(circuit); | |
696 | return retv; | |
697 | } | |
698 | ||
699 | /* initialize the circuit streams after opening connection */ | |
700 | isis_circuit_stream(circuit, &circuit->rcv_stream); | |
701 | isis_circuit_stream(circuit, &circuit->snd_stream); | |
702 | ||
703 | isis_circuit_prepare(circuit); | |
704 | ||
9b39405f | 705 | circuit->tx_queue = isis_tx_queue_new(circuit, send_lsp); |
d62a17ae | 706 | |
392b89f3 EDP |
707 | #ifndef FABRICD |
708 | /* send northbound notification */ | |
709 | isis_notif_if_state_change(circuit, false); | |
710 | #endif /* ifndef FABRICD */ | |
711 | ||
d62a17ae | 712 | return ISIS_OK; |
eb5d44eb | 713 | } |
714 | ||
d62a17ae | 715 | void isis_circuit_down(struct isis_circuit *circuit) |
eb5d44eb | 716 | { |
392b89f3 EDP |
717 | #ifndef FABRICD |
718 | /* send northbound notification */ | |
719 | isis_notif_if_state_change(circuit, true); | |
720 | #endif /* ifndef FABRICD */ | |
721 | ||
d62a17ae | 722 | /* Clear the flags for all the lsps of the circuit. */ |
723 | isis_circuit_update_all_srmflags(circuit, 0); | |
724 | ||
725 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) { | |
726 | /* destroy neighbour lists */ | |
727 | if (circuit->u.bc.lan_neighs[0]) { | |
6a154c88 | 728 | list_delete(&circuit->u.bc.lan_neighs[0]); |
d62a17ae | 729 | circuit->u.bc.lan_neighs[0] = NULL; |
730 | } | |
731 | if (circuit->u.bc.lan_neighs[1]) { | |
6a154c88 | 732 | list_delete(&circuit->u.bc.lan_neighs[1]); |
d62a17ae | 733 | circuit->u.bc.lan_neighs[1] = NULL; |
734 | } | |
735 | /* destroy adjacency databases */ | |
736 | if (circuit->u.bc.adjdb[0]) { | |
737 | circuit->u.bc.adjdb[0]->del = isis_delete_adj; | |
6a154c88 | 738 | list_delete(&circuit->u.bc.adjdb[0]); |
d62a17ae | 739 | circuit->u.bc.adjdb[0] = NULL; |
740 | } | |
741 | if (circuit->u.bc.adjdb[1]) { | |
742 | circuit->u.bc.adjdb[1]->del = isis_delete_adj; | |
6a154c88 | 743 | list_delete(&circuit->u.bc.adjdb[1]); |
d62a17ae | 744 | circuit->u.bc.adjdb[1] = NULL; |
745 | } | |
746 | if (circuit->u.bc.is_dr[0]) { | |
747 | isis_dr_resign(circuit, 1); | |
748 | circuit->u.bc.is_dr[0] = 0; | |
749 | } | |
750 | memset(circuit->u.bc.l1_desig_is, 0, ISIS_SYS_ID_LEN + 1); | |
751 | if (circuit->u.bc.is_dr[1]) { | |
752 | isis_dr_resign(circuit, 2); | |
753 | circuit->u.bc.is_dr[1] = 0; | |
754 | } | |
755 | memset(circuit->u.bc.l2_desig_is, 0, ISIS_SYS_ID_LEN + 1); | |
756 | memset(circuit->u.bc.snpa, 0, ETH_ALEN); | |
757 | ||
758 | THREAD_TIMER_OFF(circuit->u.bc.t_send_lan_hello[0]); | |
759 | THREAD_TIMER_OFF(circuit->u.bc.t_send_lan_hello[1]); | |
760 | THREAD_TIMER_OFF(circuit->u.bc.t_run_dr[0]); | |
761 | THREAD_TIMER_OFF(circuit->u.bc.t_run_dr[1]); | |
762 | THREAD_TIMER_OFF(circuit->u.bc.t_refresh_pseudo_lsp[0]); | |
763 | THREAD_TIMER_OFF(circuit->u.bc.t_refresh_pseudo_lsp[1]); | |
764 | circuit->lsp_regenerate_pending[0] = 0; | |
765 | circuit->lsp_regenerate_pending[1] = 0; | |
0849c75e CF |
766 | |
767 | _ISIS_CLEAR_FLAG(isis->circuit_ids_used, circuit->circuit_id); | |
768 | circuit->circuit_id = 0; | |
d62a17ae | 769 | } else if (circuit->circ_type == CIRCUIT_T_P2P) { |
770 | isis_delete_adj(circuit->u.p2p.neighbor); | |
771 | circuit->u.p2p.neighbor = NULL; | |
772 | THREAD_TIMER_OFF(circuit->u.p2p.t_send_p2p_hello); | |
773 | } | |
774 | ||
775 | /* Cancel all active threads */ | |
776 | THREAD_TIMER_OFF(circuit->t_send_csnp[0]); | |
777 | THREAD_TIMER_OFF(circuit->t_send_csnp[1]); | |
778 | THREAD_TIMER_OFF(circuit->t_send_psnp[0]); | |
779 | THREAD_TIMER_OFF(circuit->t_send_psnp[1]); | |
780 | THREAD_OFF(circuit->t_read); | |
781 | ||
9b39405f CF |
782 | if (circuit->tx_queue) { |
783 | isis_tx_queue_free(circuit->tx_queue); | |
784 | circuit->tx_queue = NULL; | |
58e16237 CF |
785 | } |
786 | ||
d62a17ae | 787 | /* send one gratuitous hello to spead up convergence */ |
d4670f51 CF |
788 | if (circuit->state == C_STATE_UP) { |
789 | if (circuit->is_type & IS_LEVEL_1) | |
790 | send_hello(circuit, IS_LEVEL_1); | |
791 | if (circuit->is_type & IS_LEVEL_2) | |
792 | send_hello(circuit, IS_LEVEL_2); | |
793 | } | |
d62a17ae | 794 | |
795 | circuit->upadjcount[0] = 0; | |
796 | circuit->upadjcount[1] = 0; | |
797 | ||
798 | /* close the socket */ | |
799 | if (circuit->fd) { | |
800 | close(circuit->fd); | |
801 | circuit->fd = 0; | |
802 | } | |
803 | ||
804 | if (circuit->rcv_stream != NULL) { | |
805 | stream_free(circuit->rcv_stream); | |
806 | circuit->rcv_stream = NULL; | |
807 | } | |
808 | ||
809 | if (circuit->snd_stream != NULL) { | |
810 | stream_free(circuit->snd_stream); | |
811 | circuit->snd_stream = NULL; | |
812 | } | |
813 | ||
814 | thread_cancel_event(master, circuit); | |
815 | ||
816 | return; | |
eb5d44eb | 817 | } |
818 | ||
d62a17ae | 819 | void circuit_update_nlpids(struct isis_circuit *circuit) |
eb5d44eb | 820 | { |
d62a17ae | 821 | circuit->nlpids.count = 0; |
822 | ||
823 | if (circuit->ip_router) { | |
824 | circuit->nlpids.nlpids[0] = NLPID_IP; | |
825 | circuit->nlpids.count++; | |
826 | } | |
827 | if (circuit->ipv6_router) { | |
828 | circuit->nlpids.nlpids[circuit->nlpids.count] = NLPID_IPV6; | |
829 | circuit->nlpids.count++; | |
830 | } | |
831 | return; | |
eb5d44eb | 832 | } |
833 | ||
d62a17ae | 834 | void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty, |
835 | char detail) | |
3f045a08 | 836 | { |
d62a17ae | 837 | if (detail == ISIS_UI_LEVEL_BRIEF) { |
838 | vty_out(vty, " %-12s", circuit->interface->name); | |
839 | vty_out(vty, "0x%-7x", circuit->circuit_id); | |
840 | vty_out(vty, "%-9s", circuit_state2string(circuit->state)); | |
841 | vty_out(vty, "%-9s", circuit_type2string(circuit->circ_type)); | |
842 | vty_out(vty, "%-9s", circuit_t2string(circuit->is_type)); | |
843 | vty_out(vty, "\n"); | |
844 | } | |
845 | ||
846 | if (detail == ISIS_UI_LEVEL_DETAIL) { | |
847 | struct listnode *node; | |
848 | struct prefix *ip_addr; | |
849 | char buf[BUFSIZ]; | |
850 | ||
851 | vty_out(vty, " Interface: %s", circuit->interface->name); | |
852 | vty_out(vty, ", State: %s", | |
853 | circuit_state2string(circuit->state)); | |
854 | if (circuit->is_passive) | |
855 | vty_out(vty, ", Passive"); | |
856 | else | |
857 | vty_out(vty, ", Active"); | |
858 | vty_out(vty, ", Circuit Id: 0x%x", circuit->circuit_id); | |
859 | vty_out(vty, "\n"); | |
860 | vty_out(vty, " Type: %s", | |
861 | circuit_type2string(circuit->circ_type)); | |
862 | vty_out(vty, ", Level: %s", circuit_t2string(circuit->is_type)); | |
863 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) | |
864 | vty_out(vty, ", SNPA: %-10s", | |
865 | snpa_print(circuit->u.bc.snpa)); | |
866 | vty_out(vty, "\n"); | |
867 | if (circuit->is_type & IS_LEVEL_1) { | |
868 | vty_out(vty, " Level-1 Information:\n"); | |
869 | if (circuit->area->newmetric) | |
870 | vty_out(vty, " Metric: %d", | |
871 | circuit->te_metric[0]); | |
872 | else | |
873 | vty_out(vty, " Metric: %d", | |
874 | circuit->metric[0]); | |
875 | if (!circuit->is_passive) { | |
876 | vty_out(vty, ", Active neighbors: %u\n", | |
877 | circuit->upadjcount[0]); | |
878 | vty_out(vty, | |
879 | " Hello interval: %u, " | |
880 | "Holddown count: %u %s\n", | |
881 | circuit->hello_interval[0], | |
882 | circuit->hello_multiplier[0], | |
883 | (circuit->pad_hellos ? "(pad)" | |
884 | : "(no-pad)")); | |
885 | vty_out(vty, | |
886 | " CNSP interval: %u, " | |
887 | "PSNP interval: %u\n", | |
888 | circuit->csnp_interval[0], | |
889 | circuit->psnp_interval[0]); | |
890 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) | |
891 | vty_out(vty, | |
892 | " LAN Priority: %u, %s\n", | |
893 | circuit->priority[0], | |
894 | (circuit->u.bc.is_dr[0] | |
895 | ? "is DIS" | |
896 | : "is not DIS")); | |
897 | } else { | |
898 | vty_out(vty, "\n"); | |
899 | } | |
900 | } | |
901 | if (circuit->is_type & IS_LEVEL_2) { | |
902 | vty_out(vty, " Level-2 Information:\n"); | |
903 | if (circuit->area->newmetric) | |
904 | vty_out(vty, " Metric: %d", | |
905 | circuit->te_metric[1]); | |
906 | else | |
907 | vty_out(vty, " Metric: %d", | |
908 | circuit->metric[1]); | |
909 | if (!circuit->is_passive) { | |
910 | vty_out(vty, ", Active neighbors: %u\n", | |
911 | circuit->upadjcount[1]); | |
912 | vty_out(vty, | |
913 | " Hello interval: %u, " | |
914 | "Holddown count: %u %s\n", | |
915 | circuit->hello_interval[1], | |
916 | circuit->hello_multiplier[1], | |
917 | (circuit->pad_hellos ? "(pad)" | |
918 | : "(no-pad)")); | |
919 | vty_out(vty, | |
920 | " CNSP interval: %u, " | |
921 | "PSNP interval: %u\n", | |
922 | circuit->csnp_interval[1], | |
923 | circuit->psnp_interval[1]); | |
924 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) | |
925 | vty_out(vty, | |
926 | " LAN Priority: %u, %s\n", | |
927 | circuit->priority[1], | |
928 | (circuit->u.bc.is_dr[1] | |
929 | ? "is DIS" | |
930 | : "is not DIS")); | |
931 | } else { | |
932 | vty_out(vty, "\n"); | |
933 | } | |
934 | } | |
935 | if (circuit->ip_addrs && listcount(circuit->ip_addrs) > 0) { | |
936 | vty_out(vty, " IP Prefix(es):\n"); | |
937 | for (ALL_LIST_ELEMENTS_RO(circuit->ip_addrs, node, | |
938 | ip_addr)) { | |
1445b43c A |
939 | prefix2str(ip_addr, buf, sizeof(buf)); |
940 | vty_out(vty, " %s\n", buf); | |
d62a17ae | 941 | } |
942 | } | |
943 | if (circuit->ipv6_link && listcount(circuit->ipv6_link) > 0) { | |
944 | vty_out(vty, " IPv6 Link-Locals:\n"); | |
945 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_link, node, | |
946 | ip_addr)) { | |
1445b43c A |
947 | prefix2str(ip_addr, (char *)buf, BUFSIZ); |
948 | vty_out(vty, " %s\n", buf); | |
d62a17ae | 949 | } |
950 | } | |
951 | if (circuit->ipv6_non_link | |
952 | && listcount(circuit->ipv6_non_link) > 0) { | |
953 | vty_out(vty, " IPv6 Prefixes:\n"); | |
954 | for (ALL_LIST_ELEMENTS_RO(circuit->ipv6_non_link, node, | |
955 | ip_addr)) { | |
1445b43c A |
956 | prefix2str(ip_addr, (char *)buf, BUFSIZ); |
957 | vty_out(vty, " %s\n", buf); | |
d62a17ae | 958 | } |
959 | } | |
960 | ||
961 | vty_out(vty, "\n"); | |
962 | } | |
963 | return; | |
3f045a08 JB |
964 | } |
965 | ||
d56afe53 CF |
966 | DEFINE_HOOK(isis_circuit_config_write, |
967 | (struct isis_circuit *circuit, struct vty *vty), | |
968 | (circuit, vty)) | |
969 | ||
20600086 | 970 | #ifdef FABRICD |
612c2c15 | 971 | static int isis_interface_config_write(struct vty *vty) |
eb5d44eb | 972 | { |
f4e14fdb | 973 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 974 | int write = 0; |
f4e14fdb | 975 | struct listnode *node; |
d62a17ae | 976 | struct interface *ifp; |
977 | struct isis_area *area; | |
978 | struct isis_circuit *circuit; | |
979 | int i; | |
980 | ||
451fda4f | 981 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 982 | /* IF name */ |
a8b828f3 | 983 | vty_frame(vty, "interface %s\n", ifp->name); |
d62a17ae | 984 | write++; |
985 | /* IF desc */ | |
986 | if (ifp->desc) { | |
987 | vty_out(vty, " description %s\n", ifp->desc); | |
988 | write++; | |
989 | } | |
990 | /* ISIS Circuit */ | |
f4e14fdb | 991 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) { |
d62a17ae | 992 | circuit = |
993 | circuit_lookup_by_ifp(ifp, area->circuit_list); | |
994 | if (circuit == NULL) | |
995 | continue; | |
996 | if (circuit->ip_router) { | |
7c0cbd0e | 997 | vty_out(vty, " ip router " PROTO_NAME " %s\n", |
d62a17ae | 998 | area->area_tag); |
999 | write++; | |
1000 | } | |
1001 | if (circuit->is_passive) { | |
7c0cbd0e | 1002 | vty_out(vty, " " PROTO_NAME " passive\n"); |
d62a17ae | 1003 | write++; |
1004 | } | |
1005 | if (circuit->circ_type_config == CIRCUIT_T_P2P) { | |
7c0cbd0e | 1006 | vty_out(vty, " " PROTO_NAME " network point-to-point\n"); |
d62a17ae | 1007 | write++; |
1008 | } | |
1009 | if (circuit->ipv6_router) { | |
7c0cbd0e | 1010 | vty_out(vty, " ipv6 router " PROTO_NAME " %s\n", |
d62a17ae | 1011 | area->area_tag); |
1012 | write++; | |
1013 | } | |
1014 | ||
1015 | /* ISIS - circuit type */ | |
65f18157 CF |
1016 | if (!fabricd) { |
1017 | if (circuit->is_type == IS_LEVEL_1) { | |
1018 | vty_out(vty, " " PROTO_NAME " circuit-type level-1\n"); | |
d62a17ae | 1019 | write++; |
65f18157 CF |
1020 | } else { |
1021 | if (circuit->is_type == IS_LEVEL_2) { | |
1022 | vty_out(vty, | |
1023 | " " PROTO_NAME " circuit-type level-2-only\n"); | |
1024 | write++; | |
1025 | } | |
d62a17ae | 1026 | } |
1027 | } | |
1028 | ||
1029 | /* ISIS - CSNP interval */ | |
1030 | if (circuit->csnp_interval[0] | |
1031 | == circuit->csnp_interval[1]) { | |
1032 | if (circuit->csnp_interval[0] | |
1033 | != DEFAULT_CSNP_INTERVAL) { | |
7c0cbd0e | 1034 | vty_out(vty, " " PROTO_NAME " csnp-interval %d\n", |
d62a17ae | 1035 | circuit->csnp_interval[0]); |
1036 | write++; | |
1037 | } | |
1038 | } else { | |
1039 | for (i = 0; i < 2; i++) { | |
1040 | if (circuit->csnp_interval[i] | |
1041 | != DEFAULT_CSNP_INTERVAL) { | |
1042 | vty_out(vty, | |
7c0cbd0e | 1043 | " " PROTO_NAME " csnp-interval %d level-%d\n", |
d62a17ae | 1044 | circuit->csnp_interval |
1045 | [i], | |
1046 | i + 1); | |
1047 | write++; | |
1048 | } | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | /* ISIS - PSNP interval */ | |
1053 | if (circuit->psnp_interval[0] | |
1054 | == circuit->psnp_interval[1]) { | |
1055 | if (circuit->psnp_interval[0] | |
1056 | != DEFAULT_PSNP_INTERVAL) { | |
7c0cbd0e | 1057 | vty_out(vty, " " PROTO_NAME " psnp-interval %d\n", |
d62a17ae | 1058 | circuit->psnp_interval[0]); |
1059 | write++; | |
1060 | } | |
1061 | } else { | |
1062 | for (i = 0; i < 2; i++) { | |
1063 | if (circuit->psnp_interval[i] | |
1064 | != DEFAULT_PSNP_INTERVAL) { | |
1065 | vty_out(vty, | |
7c0cbd0e | 1066 | " " PROTO_NAME " psnp-interval %d level-%d\n", |
d62a17ae | 1067 | circuit->psnp_interval |
1068 | [i], | |
1069 | i + 1); | |
1070 | write++; | |
1071 | } | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | /* ISIS - Hello padding - Defaults to true so only | |
1076 | * display if false */ | |
1077 | if (circuit->pad_hellos == 0) { | |
7c0cbd0e | 1078 | vty_out(vty, " no " PROTO_NAME " hello padding\n"); |
d62a17ae | 1079 | write++; |
1080 | } | |
1081 | ||
58e5d748 CF |
1082 | if (circuit->disable_threeway_adj) { |
1083 | vty_out(vty, " no isis three-way-handshake\n"); | |
1084 | write++; | |
1085 | } | |
1086 | ||
d62a17ae | 1087 | /* ISIS - Hello interval */ |
1088 | if (circuit->hello_interval[0] | |
1089 | == circuit->hello_interval[1]) { | |
1090 | if (circuit->hello_interval[0] | |
1091 | != DEFAULT_HELLO_INTERVAL) { | |
1092 | vty_out(vty, | |
7c0cbd0e | 1093 | " " PROTO_NAME " hello-interval %d\n", |
d62a17ae | 1094 | circuit->hello_interval[0]); |
1095 | write++; | |
1096 | } | |
1097 | } else { | |
1098 | for (i = 0; i < 2; i++) { | |
1099 | if (circuit->hello_interval[i] | |
1100 | != DEFAULT_HELLO_INTERVAL) { | |
1101 | vty_out(vty, | |
7c0cbd0e | 1102 | " " PROTO_NAME " hello-interval %d level-%d\n", |
d62a17ae | 1103 | circuit->hello_interval |
1104 | [i], | |
1105 | i + 1); | |
1106 | write++; | |
1107 | } | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | /* ISIS - Hello Multiplier */ | |
1112 | if (circuit->hello_multiplier[0] | |
1113 | == circuit->hello_multiplier[1]) { | |
1114 | if (circuit->hello_multiplier[0] | |
1115 | != DEFAULT_HELLO_MULTIPLIER) { | |
1116 | vty_out(vty, | |
7c0cbd0e | 1117 | " " PROTO_NAME " hello-multiplier %d\n", |
d62a17ae | 1118 | circuit->hello_multiplier[0]); |
1119 | write++; | |
1120 | } | |
1121 | } else { | |
1122 | for (i = 0; i < 2; i++) { | |
1123 | if (circuit->hello_multiplier[i] | |
1124 | != DEFAULT_HELLO_MULTIPLIER) { | |
1125 | vty_out(vty, | |
7c0cbd0e | 1126 | " " PROTO_NAME " hello-multiplier %d level-%d\n", |
d62a17ae | 1127 | circuit->hello_multiplier |
1128 | [i], | |
1129 | i + 1); | |
1130 | write++; | |
1131 | } | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* ISIS - Priority */ | |
1136 | if (circuit->priority[0] == circuit->priority[1]) { | |
1137 | if (circuit->priority[0] != DEFAULT_PRIORITY) { | |
7c0cbd0e | 1138 | vty_out(vty, " " PROTO_NAME " priority %d\n", |
d62a17ae | 1139 | circuit->priority[0]); |
1140 | write++; | |
1141 | } | |
1142 | } else { | |
1143 | for (i = 0; i < 2; i++) { | |
1144 | if (circuit->priority[i] | |
1145 | != DEFAULT_PRIORITY) { | |
1146 | vty_out(vty, | |
7c0cbd0e | 1147 | " " PROTO_NAME " priority %d level-%d\n", |
d62a17ae | 1148 | circuit->priority[i], |
1149 | i + 1); | |
1150 | write++; | |
1151 | } | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /* ISIS - Metric */ | |
1156 | if (circuit->te_metric[0] == circuit->te_metric[1]) { | |
1157 | if (circuit->te_metric[0] | |
1158 | != DEFAULT_CIRCUIT_METRIC) { | |
7c0cbd0e | 1159 | vty_out(vty, " " PROTO_NAME " metric %d\n", |
d62a17ae | 1160 | circuit->te_metric[0]); |
1161 | write++; | |
1162 | } | |
1163 | } else { | |
1164 | for (i = 0; i < 2; i++) { | |
1165 | if (circuit->te_metric[i] | |
1166 | != DEFAULT_CIRCUIT_METRIC) { | |
1167 | vty_out(vty, | |
7c0cbd0e | 1168 | " " PROTO_NAME " metric %d level-%d\n", |
d62a17ae | 1169 | circuit->te_metric[i], |
1170 | i + 1); | |
1171 | write++; | |
1172 | } | |
1173 | } | |
1174 | } | |
1175 | if (circuit->passwd.type == ISIS_PASSWD_TYPE_HMAC_MD5) { | |
7c0cbd0e | 1176 | vty_out(vty, " " PROTO_NAME " password md5 %s\n", |
d62a17ae | 1177 | circuit->passwd.passwd); |
1178 | write++; | |
1179 | } else if (circuit->passwd.type | |
1180 | == ISIS_PASSWD_TYPE_CLEARTXT) { | |
7c0cbd0e | 1181 | vty_out(vty, " " PROTO_NAME " password clear %s\n", |
d62a17ae | 1182 | circuit->passwd.passwd); |
1183 | write++; | |
1184 | } | |
5489eb45 CF |
1185 | write += hook_call(isis_circuit_config_write, |
1186 | circuit, vty); | |
d62a17ae | 1187 | } |
a8b828f3 | 1188 | vty_endframe(vty, "!\n"); |
d62a17ae | 1189 | } |
1190 | ||
1191 | return write; | |
eb5d44eb | 1192 | } |
20600086 | 1193 | #else |
612c2c15 | 1194 | static int isis_interface_config_write(struct vty *vty) |
20600086 EDP |
1195 | { |
1196 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
1197 | int write = 0; | |
1198 | struct interface *ifp; | |
1199 | struct isis_circuit *circuit; | |
1200 | struct lyd_node *dnode; | |
1201 | ||
1202 | FOR_ALL_INTERFACES (vrf, ifp) { | |
1203 | dnode = yang_dnode_get( | |
1204 | running_config->dnode, | |
1205 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
1206 | ifp->name, vrf->name); | |
1207 | if (dnode == NULL) | |
1208 | continue; | |
1209 | ||
1210 | write++; | |
1211 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
1212 | circuit = circuit_scan_by_ifp(ifp); | |
1213 | if (circuit) | |
1214 | write += hook_call(isis_circuit_config_write, circuit, | |
1215 | vty); | |
1216 | } | |
1217 | return write; | |
1218 | } | |
1219 | #endif /* ifdef FABRICD */ | |
eb5d44eb | 1220 | |
d62a17ae | 1221 | struct isis_circuit *isis_circuit_create(struct isis_area *area, |
1222 | struct interface *ifp) | |
eb5d44eb | 1223 | { |
d62a17ae | 1224 | struct isis_circuit *circuit = circuit_scan_by_ifp(ifp); |
1225 | if (circuit && circuit->area) | |
1226 | return NULL; | |
1227 | circuit = isis_csm_state_change(ISIS_ENABLE, circuit, area); | |
1228 | if (circuit->state != C_STATE_CONF && circuit->state != C_STATE_UP) | |
1229 | return circuit; | |
1230 | isis_circuit_if_bind(circuit, ifp); | |
1231 | return circuit; | |
eb5d44eb | 1232 | } |
1233 | ||
d62a17ae | 1234 | void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router, |
1235 | bool ipv6_router) | |
eb5d44eb | 1236 | { |
d62a17ae | 1237 | struct isis_area *area = circuit->area; |
1238 | bool change = circuit->ip_router != ip_router | |
1239 | || circuit->ipv6_router != ipv6_router; | |
d62a17ae | 1240 | |
1241 | area->ip_circuits += ip_router - circuit->ip_router; | |
1242 | area->ipv6_circuits += ipv6_router - circuit->ipv6_router; | |
1243 | circuit->ip_router = ip_router; | |
1244 | circuit->ipv6_router = ipv6_router; | |
1245 | ||
1246 | if (!change) | |
1247 | return; | |
1248 | ||
1249 | circuit_update_nlpids(circuit); | |
1250 | ||
1251 | if (!ip_router && !ipv6_router) | |
1252 | isis_csm_state_change(ISIS_DISABLE, circuit, area); | |
d62a17ae | 1253 | else |
1254 | lsp_regenerate_schedule(circuit->area, circuit->is_type, 0); | |
3f045a08 | 1255 | } |
eb5d44eb | 1256 | |
64dd3ffe | 1257 | ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive) |
3f045a08 | 1258 | { |
d62a17ae | 1259 | if (circuit->is_passive == passive) |
64dd3ffe | 1260 | return ferr_ok(); |
d62a17ae | 1261 | |
1262 | if (if_is_loopback(circuit->interface) && !passive) | |
64dd3ffe | 1263 | return ferr_cfg_invalid("loopback is always passive"); |
d62a17ae | 1264 | |
1265 | if (circuit->state != C_STATE_UP) { | |
1266 | circuit->is_passive = passive; | |
1267 | } else { | |
1268 | struct isis_area *area = circuit->area; | |
1269 | isis_csm_state_change(ISIS_DISABLE, circuit, area); | |
1270 | circuit->is_passive = passive; | |
1271 | isis_csm_state_change(ISIS_ENABLE, circuit, area); | |
1272 | } | |
1273 | ||
64dd3ffe | 1274 | return ferr_ok(); |
eb5d44eb | 1275 | } |
1276 | ||
64dd3ffe DL |
1277 | ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level, |
1278 | int metric) | |
3f045a08 | 1279 | { |
d62a17ae | 1280 | assert(level == IS_LEVEL_1 || level == IS_LEVEL_2); |
1281 | if (metric > MAX_WIDE_LINK_METRIC) | |
64dd3ffe DL |
1282 | return ferr_cfg_invalid("metric %d too large for wide metric", |
1283 | metric); | |
d62a17ae | 1284 | if (circuit->area && circuit->area->oldmetric |
1285 | && metric > MAX_NARROW_LINK_METRIC) | |
64dd3ffe DL |
1286 | return ferr_cfg_invalid("metric %d too large for narrow metric", |
1287 | metric); | |
d62a17ae | 1288 | |
1289 | circuit->te_metric[level - 1] = metric; | |
1290 | circuit->metric[level - 1] = metric; | |
1291 | ||
1292 | if (circuit->area) | |
1293 | lsp_regenerate_schedule(circuit->area, level, 0); | |
64dd3ffe | 1294 | return ferr_ok(); |
eb5d44eb | 1295 | } |
1296 | ||
64dd3ffe | 1297 | ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit) |
eb5d44eb | 1298 | { |
d62a17ae | 1299 | memset(&circuit->passwd, 0, sizeof(circuit->passwd)); |
64dd3ffe | 1300 | return ferr_ok(); |
3f045a08 JB |
1301 | } |
1302 | ||
e28544ed QY |
1303 | ferr_r isis_circuit_passwd_set(struct isis_circuit *circuit, |
1304 | uint8_t passwd_type, const char *passwd) | |
3f045a08 | 1305 | { |
d62a17ae | 1306 | int len; |
f390d2c7 | 1307 | |
d62a17ae | 1308 | if (!passwd) |
64dd3ffe | 1309 | return ferr_code_bug("no circuit password given"); |
50c7d14a | 1310 | |
d62a17ae | 1311 | len = strlen(passwd); |
1312 | if (len > 254) | |
64dd3ffe DL |
1313 | return ferr_code_bug( |
1314 | "circuit password too long (max 254 chars)"); | |
f390d2c7 | 1315 | |
d62a17ae | 1316 | circuit->passwd.len = len; |
e28544ed QY |
1317 | strlcpy((char *)circuit->passwd.passwd, passwd, |
1318 | sizeof(circuit->passwd.passwd)); | |
d62a17ae | 1319 | circuit->passwd.type = passwd_type; |
64dd3ffe | 1320 | return ferr_ok(); |
eb5d44eb | 1321 | } |
1322 | ||
64dd3ffe DL |
1323 | ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit, |
1324 | const char *passwd) | |
eb5d44eb | 1325 | { |
d62a17ae | 1326 | return isis_circuit_passwd_set(circuit, ISIS_PASSWD_TYPE_CLEARTXT, |
1327 | passwd); | |
50c7d14a | 1328 | } |
f390d2c7 | 1329 | |
64dd3ffe DL |
1330 | ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit, |
1331 | const char *passwd) | |
50c7d14a | 1332 | { |
d62a17ae | 1333 | return isis_circuit_passwd_set(circuit, ISIS_PASSWD_TYPE_HMAC_MD5, |
1334 | passwd); | |
eb5d44eb | 1335 | } |
64dd3ffe | 1336 | |
3f045a08 | 1337 | struct cmd_node interface_node = { |
f4b8291f | 1338 | .name = "interface", |
62b346ee | 1339 | .node = INTERFACE_NODE, |
24389580 | 1340 | .parent_node = CONFIG_NODE, |
62b346ee | 1341 | .prompt = "%s(config-if)# ", |
612c2c15 | 1342 | .config_write = isis_interface_config_write, |
eb5d44eb | 1343 | }; |
1344 | ||
d0820765 | 1345 | void isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type) |
3f045a08 | 1346 | { |
64dd3ffe | 1347 | if (circuit->circ_type == circ_type) |
d0820765 | 1348 | return; |
d62a17ae | 1349 | |
d62a17ae | 1350 | if (circuit->state != C_STATE_UP) { |
1351 | circuit->circ_type = circ_type; | |
1352 | circuit->circ_type_config = circ_type; | |
1353 | } else { | |
1354 | struct isis_area *area = circuit->area; | |
d62a17ae | 1355 | |
1356 | isis_csm_state_change(ISIS_DISABLE, circuit, area); | |
1357 | circuit->circ_type = circ_type; | |
1358 | circuit->circ_type_config = circ_type; | |
1359 | isis_csm_state_change(ISIS_ENABLE, circuit, area); | |
1360 | } | |
3f045a08 JB |
1361 | } |
1362 | ||
d62a17ae | 1363 | int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid, |
1364 | bool enabled) | |
064f4896 | 1365 | { |
d62a17ae | 1366 | struct isis_circuit_mt_setting *setting; |
064f4896 | 1367 | |
d62a17ae | 1368 | setting = circuit_get_mt_setting(circuit, mtid); |
1369 | if (setting->enabled != enabled) { | |
1370 | setting->enabled = enabled; | |
1371 | lsp_regenerate_schedule(circuit->area, IS_LEVEL_1 | IS_LEVEL_2, | |
1372 | 0); | |
1373 | } | |
064f4896 | 1374 | |
d62a17ae | 1375 | return CMD_SUCCESS; |
064f4896 CF |
1376 | } |
1377 | ||
d62a17ae | 1378 | int isis_if_new_hook(struct interface *ifp) |
eb5d44eb | 1379 | { |
d62a17ae | 1380 | return 0; |
eb5d44eb | 1381 | } |
1382 | ||
d62a17ae | 1383 | int isis_if_delete_hook(struct interface *ifp) |
eb5d44eb | 1384 | { |
d62a17ae | 1385 | struct isis_circuit *circuit; |
1386 | /* Clean up the circuit data */ | |
1387 | if (ifp && ifp->info) { | |
1388 | circuit = ifp->info; | |
1389 | isis_csm_state_change(IF_DOWN_FROM_Z, circuit, circuit->area); | |
d62a17ae | 1390 | } |
1391 | ||
1392 | return 0; | |
eb5d44eb | 1393 | } |
1394 | ||
138c5a74 DS |
1395 | static int isis_ifp_create(struct interface *ifp) |
1396 | { | |
ef7bd2a3 DS |
1397 | if (if_is_operative(ifp)) |
1398 | isis_csm_state_change(IF_UP_FROM_Z, circuit_scan_by_ifp(ifp), | |
1399 | ifp); | |
1400 | ||
1401 | hook_call(isis_if_new_hook, ifp); | |
1402 | ||
138c5a74 DS |
1403 | return 0; |
1404 | } | |
1405 | ||
1406 | static int isis_ifp_up(struct interface *ifp) | |
1407 | { | |
ddbf3e60 DS |
1408 | isis_csm_state_change(IF_UP_FROM_Z, circuit_scan_by_ifp(ifp), ifp); |
1409 | ||
138c5a74 DS |
1410 | return 0; |
1411 | } | |
1412 | ||
1413 | static int isis_ifp_down(struct interface *ifp) | |
1414 | { | |
b0b69e59 DS |
1415 | struct isis_circuit *circuit; |
1416 | ||
1417 | circuit = isis_csm_state_change(IF_DOWN_FROM_Z, | |
1418 | circuit_scan_by_ifp(ifp), ifp); | |
1419 | if (circuit) | |
1420 | SET_FLAG(circuit->flags, ISIS_CIRCUIT_FLAPPED_AFTER_SPF); | |
1421 | ||
138c5a74 DS |
1422 | return 0; |
1423 | } | |
1424 | ||
1425 | static int isis_ifp_destroy(struct interface *ifp) | |
1426 | { | |
3c3c3252 DS |
1427 | if (if_is_operative(ifp)) |
1428 | zlog_warn("Zebra: got delete of %s, but interface is still up", | |
1429 | ifp->name); | |
1430 | ||
1431 | isis_csm_state_change(IF_DOWN_FROM_Z, circuit_scan_by_ifp(ifp), ifp); | |
1432 | ||
1433 | /* Cannot call if_delete because we should retain the pseudo interface | |
1434 | in case there is configuration info attached to it. */ | |
1435 | if_delete_retain(ifp); | |
1436 | ||
138c5a74 DS |
1437 | return 0; |
1438 | } | |
1439 | ||
4d762f26 | 1440 | void isis_circuit_init(void) |
eb5d44eb | 1441 | { |
d62a17ae | 1442 | /* Initialize Zebra interface data structure */ |
ce19a04a DL |
1443 | hook_register_prio(if_add, 0, isis_if_new_hook); |
1444 | hook_register_prio(if_del, 0, isis_if_delete_hook); | |
eb5d44eb | 1445 | |
d62a17ae | 1446 | /* Install interface node */ |
612c2c15 | 1447 | install_node(&interface_node); |
d62a17ae | 1448 | if_cmd_init(); |
138c5a74 DS |
1449 | if_zapi_callbacks(isis_ifp_create, isis_ifp_up, |
1450 | isis_ifp_down, isis_ifp_destroy); | |
eb5d44eb | 1451 | } |