2 * Route map function of ospfd.
3 * Copyright (C) 2000 IP Infusion Inc.
5 * Written by Toshiaki Takada.
7 * This file is part of GNU Zebra.
9 * GNU Zebra is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2, or (at your option) any
14 * GNU Zebra is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; see the file COPYING; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
36 #include "ospfd/ospfd.h"
37 #include "ospfd/ospf_asbr.h"
38 #include "ospfd/ospf_interface.h"
39 #include "ospfd/ospf_lsa.h"
40 #include "ospfd/ospf_route.h"
41 #include "ospfd/ospf_zebra.h"
43 /* Hook function for updating route_map assignment. */
44 static void ospf_route_map_update(const char *name
)
49 /* If OSPF instatnce does not exist, return right now. */
54 /* Update route-map */
55 for (type
= 0; type
<= ZEBRA_ROUTE_MAX
; type
++) {
56 struct list
*red_list
;
57 struct listnode
*node
;
58 struct ospf_redist
*red
;
60 red_list
= ospf
->redist
[type
];
64 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
)) {
65 if (ROUTEMAP_NAME(red
)
66 && strcmp(ROUTEMAP_NAME(red
), name
) == 0) {
67 /* Keep old route-map. */
68 struct route_map
*old
= ROUTEMAP(red
);
70 /* Update route-map. */
71 ROUTEMAP(red
) = route_map_lookup_by_name(
74 /* No update for this distribute type. */
75 if (old
== NULL
&& ROUTEMAP(red
) == NULL
)
78 ospf_distribute_list_update(ospf
, type
,
85 static void ospf_route_map_event(route_map_event_t event
, const char *name
)
90 /* If OSPF instatnce does not exist, return right now. */
95 for (type
= 0; type
<= ZEBRA_ROUTE_MAX
; type
++) {
96 struct list
*red_list
;
97 struct listnode
*node
;
98 struct ospf_redist
*red
;
100 red_list
= ospf
->redist
[type
];
104 for (ALL_LIST_ELEMENTS_RO(red_list
, node
, red
)) {
105 if (ROUTEMAP_NAME(red
) && ROUTEMAP(red
)
106 && !strcmp(ROUTEMAP_NAME(red
), name
)) {
107 ospf_distribute_list_update(ospf
, type
,
114 /* `match ip netxthop ' */
115 /* Match function return 1 if match is success else return zero. */
116 static route_map_result_t
route_match_ip_nexthop(void *rule
,
117 struct prefix
*prefix
,
118 route_map_object_t type
,
121 struct access_list
*alist
;
122 struct external_info
*ei
= object
;
123 struct prefix_ipv4 p
;
125 if (type
== RMAP_OSPF
) {
127 p
.prefix
= ei
->nexthop
;
128 p
.prefixlen
= IPV4_MAX_BITLEN
;
130 alist
= access_list_lookup(AFI_IP
, (char *)rule
);
134 return (access_list_apply(alist
, &p
) == FILTER_DENY
141 /* Route map `ip next-hop' match statement. `arg' should be
143 static void *route_match_ip_nexthop_compile(const char *arg
)
145 return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED
, arg
);
148 /* Free route map's compiled `ip address' value. */
149 static void route_match_ip_nexthop_free(void *rule
)
151 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
154 /* Route map commands for metric matching. */
155 struct route_map_rule_cmd route_match_ip_nexthop_cmd
= {
156 "ip next-hop", route_match_ip_nexthop
, route_match_ip_nexthop_compile
,
157 route_match_ip_nexthop_free
};
159 /* `match ip next-hop prefix-list PREFIX_LIST' */
161 static route_map_result_t
162 route_match_ip_next_hop_prefix_list(void *rule
, struct prefix
*prefix
,
163 route_map_object_t type
, void *object
)
165 struct prefix_list
*plist
;
166 struct external_info
*ei
= object
;
167 struct prefix_ipv4 p
;
169 if (type
== RMAP_OSPF
) {
171 p
.prefix
= ei
->nexthop
;
172 p
.prefixlen
= IPV4_MAX_BITLEN
;
174 plist
= prefix_list_lookup(AFI_IP
, (char *)rule
);
178 return (prefix_list_apply(plist
, &p
) == PREFIX_DENY
185 static void *route_match_ip_next_hop_prefix_list_compile(const char *arg
)
187 return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED
, arg
);
190 static void route_match_ip_next_hop_prefix_list_free(void *rule
)
192 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
195 struct route_map_rule_cmd route_match_ip_next_hop_prefix_list_cmd
= {
196 "ip next-hop prefix-list", route_match_ip_next_hop_prefix_list
,
197 route_match_ip_next_hop_prefix_list_compile
,
198 route_match_ip_next_hop_prefix_list_free
};
200 /* `match ip address IP_ACCESS_LIST' */
201 /* Match function should return 1 if match is success else return
203 static route_map_result_t
route_match_ip_address(void *rule
,
204 struct prefix
*prefix
,
205 route_map_object_t type
,
208 struct access_list
*alist
;
209 /* struct prefix_ipv4 match; */
211 if (type
== RMAP_OSPF
) {
212 alist
= access_list_lookup(AFI_IP
, (char *)rule
);
216 return (access_list_apply(alist
, prefix
) == FILTER_DENY
223 /* Route map `ip address' match statement. `arg' should be
225 static void *route_match_ip_address_compile(const char *arg
)
227 return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED
, arg
);
230 /* Free route map's compiled `ip address' value. */
231 static void route_match_ip_address_free(void *rule
)
233 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
236 /* Route map commands for ip address matching. */
237 struct route_map_rule_cmd route_match_ip_address_cmd
= {
238 "ip address", route_match_ip_address
, route_match_ip_address_compile
,
239 route_match_ip_address_free
};
241 /* `match ip address prefix-list PREFIX_LIST' */
242 static route_map_result_t
243 route_match_ip_address_prefix_list(void *rule
, struct prefix
*prefix
,
244 route_map_object_t type
, void *object
)
246 struct prefix_list
*plist
;
248 if (type
== RMAP_OSPF
) {
249 plist
= prefix_list_lookup(AFI_IP
, (char *)rule
);
253 return (prefix_list_apply(plist
, prefix
) == PREFIX_DENY
260 static void *route_match_ip_address_prefix_list_compile(const char *arg
)
262 return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED
, arg
);
265 static void route_match_ip_address_prefix_list_free(void *rule
)
267 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
270 struct route_map_rule_cmd route_match_ip_address_prefix_list_cmd
= {
271 "ip address prefix-list", route_match_ip_address_prefix_list
,
272 route_match_ip_address_prefix_list_compile
,
273 route_match_ip_address_prefix_list_free
};
275 /* `match interface IFNAME' */
276 /* Match function should return 1 if match is success else return
278 static route_map_result_t
route_match_interface(void *rule
,
279 struct prefix
*prefix
,
280 route_map_object_t type
,
283 struct interface
*ifp
;
284 struct external_info
*ei
;
286 if (type
== RMAP_OSPF
) {
288 ifp
= if_lookup_by_name((char *)rule
, VRF_DEFAULT
);
290 if (ifp
== NULL
|| ifp
->ifindex
!= ei
->ifindex
)
298 /* Route map `interface' match statement. `arg' should be
300 static void *route_match_interface_compile(const char *arg
)
302 return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED
, arg
);
305 /* Free route map's compiled `interface' value. */
306 static void route_match_interface_free(void *rule
)
308 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
311 /* Route map commands for ip address matching. */
312 struct route_map_rule_cmd route_match_interface_cmd
= {
313 "interface", route_match_interface
, route_match_interface_compile
,
314 route_match_interface_free
};
316 /* Match function return 1 if match is success else return zero. */
317 static route_map_result_t
route_match_tag(void *rule
, struct prefix
*prefix
,
318 route_map_object_t type
, void *object
)
321 struct external_info
*ei
;
323 if (type
== RMAP_OSPF
) {
327 return ((ei
->tag
== *tag
) ? RMAP_MATCH
: RMAP_NOMATCH
);
333 /* Route map commands for tag matching. */
334 static struct route_map_rule_cmd route_match_tag_cmd
= {
337 route_map_rule_tag_compile
,
338 route_map_rule_tag_free
,
342 /* `set metric METRIC' */
343 /* Set metric to attribute. */
344 static route_map_result_t
route_set_metric(void *rule
, struct prefix
*prefix
,
345 route_map_object_t type
,
349 struct external_info
*ei
;
351 if (type
== RMAP_OSPF
) {
352 /* Fetch routemap's rule information. */
356 /* Set metric out value. */
357 ei
->route_map_set
.metric
= *metric
;
362 /* set metric compilation. */
363 static void *route_set_metric_compile(const char *arg
)
367 /* OSPF doesn't support the +/- in
368 set metric <+/-metric> check
369 Ignore the +/- component */
370 if (!all_digit(arg
)) {
371 if ((arg
[0] == '+' || arg
[0] == '-') && all_digit(arg
+ 1)) {
372 zlog_warn("OSPF does not support 'set metric +/-'");
375 if (strmatch(arg
, "+rtt") || strmatch(arg
, "-rtt"))
377 "OSPF does not support 'set metric +rtt / -rtt'");
381 metric
= XCALLOC(MTYPE_ROUTE_MAP_COMPILED
, sizeof(u_int32_t
));
382 *metric
= strtoul(arg
, NULL
, 10);
387 /* Free route map's compiled `set metric' value. */
388 static void route_set_metric_free(void *rule
)
390 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
393 /* Set metric rule structure. */
394 struct route_map_rule_cmd route_set_metric_cmd
= {
397 route_set_metric_compile
,
398 route_set_metric_free
,
401 /* `set metric-type TYPE' */
402 /* Set metric-type to attribute. */
403 static route_map_result_t
route_set_metric_type(void *rule
,
404 struct prefix
*prefix
,
405 route_map_object_t type
,
408 u_int32_t
*metric_type
;
409 struct external_info
*ei
;
411 if (type
== RMAP_OSPF
) {
412 /* Fetch routemap's rule information. */
416 /* Set metric out value. */
417 ei
->route_map_set
.metric_type
= *metric_type
;
422 /* set metric-type compilation. */
423 static void *route_set_metric_type_compile(const char *arg
)
425 u_int32_t
*metric_type
;
427 metric_type
= XCALLOC(MTYPE_ROUTE_MAP_COMPILED
, sizeof(u_int32_t
));
428 if (strcmp(arg
, "type-1") == 0)
429 *metric_type
= EXTERNAL_METRIC_TYPE_1
;
430 else if (strcmp(arg
, "type-2") == 0)
431 *metric_type
= EXTERNAL_METRIC_TYPE_2
;
433 if (*metric_type
== EXTERNAL_METRIC_TYPE_1
434 || *metric_type
== EXTERNAL_METRIC_TYPE_2
)
437 XFREE(MTYPE_ROUTE_MAP_COMPILED
, metric_type
);
441 /* Free route map's compiled `set metric-type' value. */
442 static void route_set_metric_type_free(void *rule
)
444 XFREE(MTYPE_ROUTE_MAP_COMPILED
, rule
);
447 /* Set metric rule structure. */
448 struct route_map_rule_cmd route_set_metric_type_cmd
= {
450 route_set_metric_type
,
451 route_set_metric_type_compile
,
452 route_set_metric_type_free
,
455 static route_map_result_t
route_set_tag(void *rule
, struct prefix
*prefix
,
456 route_map_object_t type
, void *object
)
459 struct external_info
*ei
;
461 if (type
== RMAP_OSPF
) {
472 /* Route map commands for tag set. */
473 static struct route_map_rule_cmd route_set_tag_cmd
= {
476 route_map_rule_tag_compile
,
477 route_map_rule_tag_free
,
480 DEFUN (set_metric_type
,
482 "set metric-type <type-1|type-2>",
484 "Type of metric for destination routing protocol\n"
485 "OSPF[6] external type 1 metric\n"
486 "OSPF[6] external type 2 metric\n")
488 char *ext
= argv
[2]->text
;
489 return generic_set_add(vty
, VTY_GET_CONTEXT(route_map_index
),
493 DEFUN (no_set_metric_type
,
494 no_set_metric_type_cmd
,
495 "no set metric-type [<type-1|type-2>]",
498 "Type of metric for destination routing protocol\n"
499 "OSPF[6] external type 1 metric\n"
500 "OSPF[6] external type 2 metric\n")
502 char *ext
= (argc
== 4) ? argv
[3]->text
: NULL
;
503 return generic_set_delete(vty
, VTY_GET_CONTEXT(route_map_index
),
508 void ospf_route_map_init(void)
512 route_map_add_hook(ospf_route_map_update
);
513 route_map_delete_hook(ospf_route_map_update
);
514 route_map_event_hook(ospf_route_map_event
);
516 route_map_set_metric_hook(generic_set_add
);
517 route_map_no_set_metric_hook(generic_set_delete
);
519 route_map_match_ip_next_hop_hook(generic_match_add
);
520 route_map_no_match_ip_next_hop_hook(generic_match_delete
);
522 route_map_match_interface_hook(generic_match_add
);
523 route_map_no_match_interface_hook(generic_match_delete
);
525 route_map_match_ip_address_hook(generic_match_add
);
526 route_map_no_match_ip_address_hook(generic_match_delete
);
528 route_map_match_ip_address_prefix_list_hook(generic_match_add
);
529 route_map_no_match_ip_address_prefix_list_hook(generic_match_delete
);
531 route_map_match_ip_next_hop_prefix_list_hook(generic_match_add
);
532 route_map_no_match_ip_next_hop_prefix_list_hook(generic_match_delete
);
534 route_map_match_tag_hook(generic_match_add
);
535 route_map_no_match_tag_hook(generic_match_delete
);
537 route_map_set_metric_hook(generic_set_add
);
538 route_map_no_set_metric_hook(generic_set_delete
);
540 route_map_set_tag_hook(generic_set_add
);
541 route_map_no_set_tag_hook(generic_set_delete
);
543 route_map_install_match(&route_match_ip_nexthop_cmd
);
544 route_map_install_match(&route_match_ip_next_hop_prefix_list_cmd
);
545 route_map_install_match(&route_match_ip_address_cmd
);
546 route_map_install_match(&route_match_ip_address_prefix_list_cmd
);
547 route_map_install_match(&route_match_interface_cmd
);
548 route_map_install_match(&route_match_tag_cmd
);
550 route_map_install_set(&route_set_metric_cmd
);
551 route_map_install_set(&route_set_metric_type_cmd
);
552 route_map_install_set(&route_set_tag_cmd
);
554 install_element(RMAP_NODE
, &set_metric_type_cmd
);
555 install_element(RMAP_NODE
, &no_set_metric_type_cmd
);