1 /* BGP community-list and extcommunity-list.
2 * Copyright (C) 1999 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #include "bgpd/bgpd.h"
31 #include "bgpd/bgp_community.h"
32 #include "bgpd/bgp_ecommunity.h"
33 #include "bgpd/bgp_lcommunity.h"
34 #include "bgpd/bgp_aspath.h"
35 #include "bgpd/bgp_regex.h"
36 #include "bgpd/bgp_clist.h"
38 /* Lookup master structure for community-list or
40 struct community_list_master
*
41 community_list_master_lookup(struct community_list_handler
*ch
, int master
)
45 case COMMUNITY_LIST_MASTER
:
46 return &ch
->community_list
;
47 case EXTCOMMUNITY_LIST_MASTER
:
48 return &ch
->extcommunity_list
;
49 case LARGE_COMMUNITY_LIST_MASTER
:
50 return &ch
->lcommunity_list
;
55 /* Allocate a new community list entry. */
56 static struct community_entry
*community_entry_new(void)
58 return XCALLOC(MTYPE_COMMUNITY_LIST_ENTRY
,
59 sizeof(struct community_entry
));
62 /* Free community list entry. */
63 static void community_entry_free(struct community_entry
*entry
)
65 switch (entry
->style
) {
66 case COMMUNITY_LIST_STANDARD
:
68 community_free(entry
->u
.com
);
70 case LARGE_COMMUNITY_LIST_STANDARD
:
72 lcommunity_free(&entry
->u
.lcom
);
74 case EXTCOMMUNITY_LIST_STANDARD
:
75 /* In case of standard extcommunity-list, configuration string
76 is made by ecommunity_ecom2str(). */
78 XFREE(MTYPE_ECOMMUNITY_STR
, entry
->config
);
80 ecommunity_free(&entry
->u
.ecom
);
82 case COMMUNITY_LIST_EXPANDED
:
83 case EXTCOMMUNITY_LIST_EXPANDED
:
84 case LARGE_COMMUNITY_LIST_EXPANDED
:
86 XFREE(MTYPE_COMMUNITY_LIST_CONFIG
, entry
->config
);
88 bgp_regex_free(entry
->reg
);
92 XFREE(MTYPE_COMMUNITY_LIST_ENTRY
, entry
);
95 /* Allocate a new community-list. */
96 static struct community_list
*community_list_new(void)
98 return XCALLOC(MTYPE_COMMUNITY_LIST
, sizeof(struct community_list
));
101 /* Free community-list. */
102 static void community_list_free(struct community_list
*list
)
105 XFREE(MTYPE_COMMUNITY_LIST_NAME
, list
->name
);
106 XFREE(MTYPE_COMMUNITY_LIST
, list
);
109 static struct community_list
*
110 community_list_insert(struct community_list_handler
*ch
, const char *name
,
115 struct community_list
*new;
116 struct community_list
*point
;
117 struct community_list_list
*list
;
118 struct community_list_master
*cm
;
120 /* Lookup community-list master. */
121 cm
= community_list_master_lookup(ch
, master
);
125 /* Allocate new community_list and copy given name. */
126 new = community_list_new();
127 new->name
= XSTRDUP(MTYPE_COMMUNITY_LIST_NAME
, name
);
129 /* If name is made by all digit character. We treat it as
131 for (number
= 0, i
= 0; i
< strlen(name
); i
++) {
132 if (isdigit((int)name
[i
]))
133 number
= (number
* 10) + (name
[i
] - '0');
138 /* In case of name is all digit character */
139 if (i
== strlen(name
)) {
140 new->sort
= COMMUNITY_LIST_NUMBER
;
142 /* Set access_list to number list. */
145 for (point
= list
->head
; point
; point
= point
->next
)
146 if (atol(point
->name
) >= number
)
149 new->sort
= COMMUNITY_LIST_STRING
;
151 /* Set access_list to string list. */
154 /* Set point to insertion point. */
155 for (point
= list
->head
; point
; point
= point
->next
)
156 if (strcmp(point
->name
, name
) >= 0)
160 /* Link to upper list. */
163 /* In case of this is the first element of master. */
164 if (list
->head
== NULL
) {
165 list
->head
= list
->tail
= new;
169 /* In case of insertion is made at the tail of access_list. */
171 new->prev
= list
->tail
;
172 list
->tail
->next
= new;
177 /* In case of insertion is made at the head of access_list. */
178 if (point
== list
->head
) {
179 new->next
= list
->head
;
180 list
->head
->prev
= new;
185 /* Insertion is made at middle of the access_list. */
187 new->prev
= point
->prev
;
190 point
->prev
->next
= new;
196 struct community_list
*community_list_lookup(struct community_list_handler
*ch
,
197 const char *name
, int master
)
199 struct community_list
*list
;
200 struct community_list_master
*cm
;
205 cm
= community_list_master_lookup(ch
, master
);
209 for (list
= cm
->num
.head
; list
; list
= list
->next
)
210 if (strcmp(list
->name
, name
) == 0)
212 for (list
= cm
->str
.head
; list
; list
= list
->next
)
213 if (strcmp(list
->name
, name
) == 0)
219 static struct community_list
*
220 community_list_get(struct community_list_handler
*ch
, const char *name
,
223 struct community_list
*list
;
225 list
= community_list_lookup(ch
, name
, master
);
227 list
= community_list_insert(ch
, name
, master
);
231 static void community_list_delete(struct community_list
*list
)
233 struct community_list_list
*clist
;
234 struct community_entry
*entry
, *next
;
236 for (entry
= list
->head
; entry
; entry
= next
) {
238 community_entry_free(entry
);
241 clist
= list
->parent
;
244 list
->next
->prev
= list
->prev
;
246 clist
->tail
= list
->prev
;
249 list
->prev
->next
= list
->next
;
251 clist
->head
= list
->next
;
253 community_list_free(list
);
256 static int community_list_empty_p(struct community_list
*list
)
258 return (list
->head
== NULL
&& list
->tail
== NULL
) ? 1 : 0;
261 /* Add community-list entry to the list. */
262 static void community_list_entry_add(struct community_list
*list
,
263 struct community_entry
*entry
)
266 entry
->prev
= list
->tail
;
269 list
->tail
->next
= entry
;
275 /* Delete community-list entry from the list. */
276 static void community_list_entry_delete(struct community_list
*list
,
277 struct community_entry
*entry
)
280 entry
->next
->prev
= entry
->prev
;
282 list
->tail
= entry
->prev
;
285 entry
->prev
->next
= entry
->next
;
287 list
->head
= entry
->next
;
289 community_entry_free(entry
);
291 if (community_list_empty_p(list
))
292 community_list_delete(list
);
295 /* Lookup community-list entry from the list. */
296 static struct community_entry
*
297 community_list_entry_lookup(struct community_list
*list
, const void *arg
,
300 struct community_entry
*entry
;
302 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
303 switch (entry
->style
) {
304 case COMMUNITY_LIST_STANDARD
:
305 if (entry
->direct
== direct
306 && community_cmp(entry
->u
.com
, arg
))
309 case EXTCOMMUNITY_LIST_STANDARD
:
310 if (entry
->direct
== direct
311 && ecommunity_cmp(entry
->u
.ecom
, arg
))
314 case LARGE_COMMUNITY_LIST_STANDARD
:
315 if (entry
->direct
== direct
316 && lcommunity_cmp(entry
->u
.lcom
, arg
))
319 case COMMUNITY_LIST_EXPANDED
:
320 case EXTCOMMUNITY_LIST_EXPANDED
:
321 case LARGE_COMMUNITY_LIST_EXPANDED
:
322 if (entry
->direct
== direct
323 && strcmp(entry
->config
, arg
) == 0)
333 static char *community_str_get(struct community
*com
, int i
)
340 memcpy(&comval
, com_nthval(com
, i
), sizeof(uint32_t));
341 comval
= ntohl(comval
);
344 case COMMUNITY_INTERNET
:
345 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "internet");
347 case COMMUNITY_GSHUT
:
348 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "graceful-shutdown");
350 case COMMUNITY_ACCEPT_OWN
:
351 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "accept-own");
353 case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4
:
354 str
= XSTRDUP(MTYPE_COMMUNITY_STR
,
355 "route-filter-translated-v4");
357 case COMMUNITY_ROUTE_FILTER_v4
:
358 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "route-filter-v4");
360 case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6
:
361 str
= XSTRDUP(MTYPE_COMMUNITY_STR
,
362 "route-filter-translated-v6");
364 case COMMUNITY_ROUTE_FILTER_v6
:
365 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "route-filter-v6");
367 case COMMUNITY_LLGR_STALE
:
368 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "llgr-stale");
370 case COMMUNITY_NO_LLGR
:
371 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "no-llgr");
373 case COMMUNITY_ACCEPT_OWN_NEXTHOP
:
374 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "accept-own-nexthop");
376 case COMMUNITY_BLACKHOLE
:
377 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "blackhole");
379 case COMMUNITY_NO_EXPORT
:
380 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "no-export");
382 case COMMUNITY_NO_ADVERTISE
:
383 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "no-advertise");
385 case COMMUNITY_LOCAL_AS
:
386 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "local-AS");
388 case COMMUNITY_NO_PEER
:
389 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "no-peer");
392 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "65536:65535");
393 as
= (comval
>> 16) & 0xFFFF;
394 val
= comval
& 0xFFFF;
395 snprintf(str
, strlen(str
), "%u:%d", as
, val
);
402 /* Internal function to perform regular expression match for
403 * a single community. */
404 static int community_regexp_include(regex_t
*reg
, struct community
*com
, int i
)
409 /* When there is no communities attribute it is treated as empty string.
411 if (com
== NULL
|| com
->size
== 0)
412 str
= XSTRDUP(MTYPE_COMMUNITY_STR
, "");
414 str
= community_str_get(com
, i
);
416 /* Regular expression match. */
417 rv
= regexec(reg
, str
, 0, NULL
, 0);
419 XFREE(MTYPE_COMMUNITY_STR
, str
);
428 /* Internal function to perform regular expression match for community
430 static int community_regexp_match(struct community
*com
, regex_t
*reg
)
434 /* When there is no communities attribute it is treated as empty
436 if (com
== NULL
|| com
->size
== 0)
439 str
= community_str(com
, false);
441 /* Regular expression match. */
442 if (regexec(reg
, str
, 0, NULL
, 0) == 0)
449 static char *lcommunity_str_get(struct lcommunity
*lcom
, int i
)
451 struct lcommunity_val lcomval
;
452 uint32_t globaladmin
;
459 ptr
= lcom
->val
+ (i
* LCOMMUNITY_SIZE
);
461 memcpy(&lcomval
, ptr
, LCOMMUNITY_SIZE
);
463 /* Allocate memory. 48 bytes taken off bgp_lcommunity.c */
464 str
= pnt
= XMALLOC(MTYPE_LCOMMUNITY_STR
, 48);
466 ptr
= (uint8_t *)lcomval
.val
;
467 ptr
= ptr_get_be32(ptr
, &globaladmin
);
468 ptr
= ptr_get_be32(ptr
, &localdata1
);
469 ptr
= ptr_get_be32(ptr
, &localdata2
);
470 (void)ptr
; /* consume value */
472 sprintf(pnt
, "%u:%u:%u", globaladmin
, localdata1
, localdata2
);
479 /* Internal function to perform regular expression match for
480 * a single community. */
481 static int lcommunity_regexp_include(regex_t
*reg
, struct lcommunity
*lcom
,
486 /* When there is no communities attribute it is treated as empty string.
488 if (lcom
== NULL
|| lcom
->size
== 0)
489 str
= XSTRDUP(MTYPE_LCOMMUNITY_STR
, "");
491 str
= lcommunity_str_get(lcom
, i
);
493 /* Regular expression match. */
494 if (regexec(reg
, str
, 0, NULL
, 0) == 0) {
495 XFREE(MTYPE_LCOMMUNITY_STR
, str
);
499 XFREE(MTYPE_LCOMMUNITY_STR
, str
);
504 static int lcommunity_regexp_match(struct lcommunity
*com
, regex_t
*reg
)
508 /* When there is no communities attribute it is treated as empty
510 if (com
== NULL
|| com
->size
== 0)
513 str
= lcommunity_str(com
, false);
515 /* Regular expression match. */
516 if (regexec(reg
, str
, 0, NULL
, 0) == 0)
524 static int ecommunity_regexp_match(struct ecommunity
*ecom
, regex_t
*reg
)
528 /* When there is no communities attribute it is treated as empty
530 if (ecom
== NULL
|| ecom
->size
== 0)
533 str
= ecommunity_str(ecom
);
535 /* Regular expression match. */
536 if (regexec(reg
, str
, 0, NULL
, 0) == 0)
544 /* Delete community attribute using regular expression match. Return
545 modified communites attribute. */
546 static struct community
*
547 community_regexp_delete (struct community
*com
, regex_t
* reg
)
551 /* Maximum is "65535:65535" + '\0'. */
559 while (i
< com
->size
)
561 memcpy (&comval
, com_nthval (com
, i
), sizeof (uint32_t));
562 comval
= ntohl (comval
);
565 case COMMUNITY_INTERNET
:
568 case COMMUNITY_ACCEPT_OWN
:
571 case COMMUNITY_ROUTE_FILTER_TRANSLATED_v4
:
572 str
= "route-filter-translated-v4";
574 case COMMUNITY_ROUTE_FILTER_v4
:
575 str
= "route-filter-v4";
577 case COMMUNITY_ROUTE_FILTER_TRANSLATED_v6
:
578 str
= "route-filter-translated-v6";
580 case COMMUNITY_ROUTE_FILTER_v6
:
581 str
= "route-filter-v6";
583 case COMMUNITY_LLGR_STALE
:
586 case COMMUNITY_NO_LLGR
:
589 case COMMUNITY_ACCEPT_OWN_NEXTHOP
:
590 str
= "accept-own-nexthop";
592 case COMMUNITY_BLACKHOLE
:
595 case COMMUNITY_NO_EXPORT
:
598 case COMMUNITY_NO_ADVERTISE
:
599 str
= "no-advertise";
601 case COMMUNITY_LOCAL_AS
:
604 case COMMUNITY_NO_PEER
:
608 sprintf (c
, "%d:%d", (comval
>> 16) & 0xFFFF,
614 if (regexec (reg
, str
, 0, NULL
, 0) == 0)
615 community_del_val (com
, com_nthval (com
, i
));
623 /* When given community attribute matches to the community-list return
625 int community_list_match(struct community
*com
, struct community_list
*list
)
627 struct community_entry
*entry
;
629 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
631 return entry
->direct
== COMMUNITY_PERMIT
? 1 : 0;
633 if (entry
->style
== COMMUNITY_LIST_STANDARD
) {
634 if (community_include(entry
->u
.com
, COMMUNITY_INTERNET
))
635 return entry
->direct
== COMMUNITY_PERMIT
? 1
638 if (community_match(com
, entry
->u
.com
))
639 return entry
->direct
== COMMUNITY_PERMIT
? 1
641 } else if (entry
->style
== COMMUNITY_LIST_EXPANDED
) {
642 if (community_regexp_match(com
, entry
->reg
))
643 return entry
->direct
== COMMUNITY_PERMIT
? 1
650 int lcommunity_list_match(struct lcommunity
*lcom
, struct community_list
*list
)
652 struct community_entry
*entry
;
654 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
656 return entry
->direct
== COMMUNITY_PERMIT
? 1 : 0;
658 if (entry
->style
== LARGE_COMMUNITY_LIST_STANDARD
) {
659 if (lcommunity_match(lcom
, entry
->u
.lcom
))
660 return entry
->direct
== COMMUNITY_PERMIT
? 1
662 } else if (entry
->style
== LARGE_COMMUNITY_LIST_EXPANDED
) {
663 if (lcommunity_regexp_match(lcom
, entry
->reg
))
664 return entry
->direct
== COMMUNITY_PERMIT
? 1
671 int ecommunity_list_match(struct ecommunity
*ecom
, struct community_list
*list
)
673 struct community_entry
*entry
;
675 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
677 return entry
->direct
== COMMUNITY_PERMIT
? 1 : 0;
679 if (entry
->style
== EXTCOMMUNITY_LIST_STANDARD
) {
680 if (ecommunity_match(ecom
, entry
->u
.ecom
))
681 return entry
->direct
== COMMUNITY_PERMIT
? 1
683 } else if (entry
->style
== EXTCOMMUNITY_LIST_EXPANDED
) {
684 if (ecommunity_regexp_match(ecom
, entry
->reg
))
685 return entry
->direct
== COMMUNITY_PERMIT
? 1
692 /* Perform exact matching. In case of expanded community-list, do
693 same thing as community_list_match(). */
694 int community_list_exact_match(struct community
*com
,
695 struct community_list
*list
)
697 struct community_entry
*entry
;
699 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
701 return entry
->direct
== COMMUNITY_PERMIT
? 1 : 0;
703 if (entry
->style
== COMMUNITY_LIST_STANDARD
) {
704 if (community_include(entry
->u
.com
, COMMUNITY_INTERNET
))
705 return entry
->direct
== COMMUNITY_PERMIT
? 1
708 if (community_cmp(com
, entry
->u
.com
))
709 return entry
->direct
== COMMUNITY_PERMIT
? 1
711 } else if (entry
->style
== COMMUNITY_LIST_EXPANDED
) {
712 if (community_regexp_match(com
, entry
->reg
))
713 return entry
->direct
== COMMUNITY_PERMIT
? 1
720 /* Delete all permitted communities in the list from com. */
721 struct community
*community_list_match_delete(struct community
*com
,
722 struct community_list
*list
)
724 struct community_entry
*entry
;
726 uint32_t com_index_to_delete
[com
->size
];
727 int delete_index
= 0;
730 /* Loop over each community value and evaluate each against the
731 * community-list. If we need to delete a community value add its index
732 * to com_index_to_delete.
734 for (i
= 0; i
< com
->size
; i
++) {
735 val
= community_val_get(com
, i
);
737 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
739 if (entry
->direct
== COMMUNITY_PERMIT
) {
740 com_index_to_delete
[delete_index
] = i
;
746 else if ((entry
->style
== COMMUNITY_LIST_STANDARD
)
747 && (community_include(entry
->u
.com
,
749 || community_include(entry
->u
.com
, val
))) {
750 if (entry
->direct
== COMMUNITY_PERMIT
) {
751 com_index_to_delete
[delete_index
] = i
;
757 else if ((entry
->style
== COMMUNITY_LIST_EXPANDED
)
758 && community_regexp_include(entry
->reg
, com
,
760 if (entry
->direct
== COMMUNITY_PERMIT
) {
761 com_index_to_delete
[delete_index
] = i
;
769 /* Delete all of the communities we flagged for deletion */
770 for (i
= delete_index
- 1; i
>= 0; i
--) {
771 val
= community_val_get(com
, com_index_to_delete
[i
]);
772 community_del_val(com
, &val
);
778 /* To avoid duplicated entry in the community-list, this function
779 compares specified entry to existing entry. */
780 static int community_list_dup_check(struct community_list
*list
,
781 struct community_entry
*new)
783 struct community_entry
*entry
;
785 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
786 if (entry
->style
!= new->style
)
789 if (entry
->direct
!= new->direct
)
792 if (entry
->any
!= new->any
)
798 switch (entry
->style
) {
799 case COMMUNITY_LIST_STANDARD
:
800 if (community_cmp(entry
->u
.com
, new->u
.com
))
803 case LARGE_COMMUNITY_LIST_STANDARD
:
804 if (lcommunity_cmp(entry
->u
.lcom
, new->u
.lcom
))
807 case EXTCOMMUNITY_LIST_STANDARD
:
808 if (ecommunity_cmp(entry
->u
.ecom
, new->u
.ecom
))
811 case COMMUNITY_LIST_EXPANDED
:
812 case EXTCOMMUNITY_LIST_EXPANDED
:
813 case LARGE_COMMUNITY_LIST_EXPANDED
:
814 if (strcmp(entry
->config
, new->config
) == 0)
824 /* Set community-list. */
825 int community_list_set(struct community_list_handler
*ch
, const char *name
,
826 const char *str
, int direct
, int style
)
828 struct community_entry
*entry
= NULL
;
829 struct community_list
*list
;
830 struct community
*com
= NULL
;
831 regex_t
*regex
= NULL
;
833 /* Get community list. */
834 list
= community_list_get(ch
, name
, COMMUNITY_LIST_MASTER
);
836 /* When community-list already has entry, new entry should have same
837 style. If you want to have mixed style community-list, you can
838 comment out this check. */
839 if (!community_list_empty_p(list
)) {
840 struct community_entry
*first
;
844 if (style
!= first
->style
) {
845 return (first
->style
== COMMUNITY_LIST_STANDARD
846 ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT
847 : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT
);
852 if (style
== COMMUNITY_LIST_STANDARD
)
853 com
= community_str2com(str
);
855 regex
= bgp_regcomp(str
);
858 return COMMUNITY_LIST_ERR_MALFORMED_VAL
;
861 entry
= community_entry_new();
862 entry
->direct
= direct
;
863 entry
->style
= style
;
864 entry
->any
= (str
? 0 : 1);
868 (regex
? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG
, str
) : NULL
);
870 /* Do not put duplicated community entry. */
871 if (community_list_dup_check(list
, entry
))
872 community_entry_free(entry
);
874 community_list_entry_add(list
, entry
);
875 route_map_notify_dependencies(name
, RMAP_EVENT_CLIST_ADDED
);
881 /* Unset community-list */
882 int community_list_unset(struct community_list_handler
*ch
, const char *name
,
883 const char *str
, int direct
, int style
)
885 struct community_entry
*entry
= NULL
;
886 struct community_list
*list
;
887 struct community
*com
= NULL
;
889 /* Lookup community list. */
890 list
= community_list_lookup(ch
, name
, COMMUNITY_LIST_MASTER
);
892 return COMMUNITY_LIST_ERR_CANT_FIND_LIST
;
894 /* Delete all of entry belongs to this community-list. */
896 community_list_delete(list
);
897 route_map_notify_dependencies(name
, RMAP_EVENT_CLIST_DELETED
);
901 if (style
== COMMUNITY_LIST_STANDARD
)
902 com
= community_str2com(str
);
905 entry
= community_list_entry_lookup(list
, com
, direct
);
908 entry
= community_list_entry_lookup(list
, str
, direct
);
911 return COMMUNITY_LIST_ERR_CANT_FIND_LIST
;
913 community_list_entry_delete(list
, entry
);
914 route_map_notify_dependencies(name
, RMAP_EVENT_CLIST_DELETED
);
919 /* Delete all permitted large communities in the list from com. */
920 struct lcommunity
*lcommunity_list_match_delete(struct lcommunity
*lcom
,
921 struct community_list
*list
)
923 struct community_entry
*entry
;
924 uint32_t com_index_to_delete
[lcom
->size
];
926 int delete_index
= 0;
929 /* Loop over each lcommunity value and evaluate each against the
930 * community-list. If we need to delete a community value add its index
931 * to com_index_to_delete.
933 for (i
= 0; i
< lcom
->size
; i
++) {
934 ptr
= lcom
->val
+ (i
* LCOMMUNITY_SIZE
);
935 for (entry
= list
->head
; entry
; entry
= entry
->next
) {
937 if (entry
->direct
== COMMUNITY_PERMIT
) {
938 com_index_to_delete
[delete_index
] = i
;
944 else if ((entry
->style
== LARGE_COMMUNITY_LIST_STANDARD
)
945 && lcommunity_include(entry
->u
.lcom
, ptr
)) {
946 if (entry
->direct
== COMMUNITY_PERMIT
) {
947 com_index_to_delete
[delete_index
] = i
;
953 else if ((entry
->style
== LARGE_COMMUNITY_LIST_EXPANDED
)
954 && lcommunity_regexp_include(entry
->reg
, lcom
,
956 if (entry
->direct
== COMMUNITY_PERMIT
) {
957 com_index_to_delete
[delete_index
] = i
;
965 /* Delete all of the communities we flagged for deletion */
966 for (i
= delete_index
- 1; i
>= 0; i
--) {
967 ptr
= lcom
->val
+ (com_index_to_delete
[i
] * LCOMMUNITY_SIZE
);
968 lcommunity_del_val(lcom
, ptr
);
974 /* Set lcommunity-list. */
975 int lcommunity_list_set(struct community_list_handler
*ch
, const char *name
,
976 const char *str
, int direct
, int style
)
978 struct community_entry
*entry
= NULL
;
979 struct community_list
*list
;
980 struct lcommunity
*lcom
= NULL
;
981 regex_t
*regex
= NULL
;
983 /* Get community list. */
984 list
= community_list_get(ch
, name
, LARGE_COMMUNITY_LIST_MASTER
);
986 /* When community-list already has entry, new entry should have same
987 style. If you want to have mixed style community-list, you can
988 comment out this check. */
989 if (!community_list_empty_p(list
)) {
990 struct community_entry
*first
;
994 if (style
!= first
->style
) {
995 return (first
->style
== COMMUNITY_LIST_STANDARD
996 ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT
997 : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT
);
1002 if (style
== LARGE_COMMUNITY_LIST_STANDARD
)
1003 lcom
= lcommunity_str2com(str
);
1005 regex
= bgp_regcomp(str
);
1007 if (!lcom
&& !regex
)
1008 return COMMUNITY_LIST_ERR_MALFORMED_VAL
;
1011 entry
= community_entry_new();
1012 entry
->direct
= direct
;
1013 entry
->style
= style
;
1014 entry
->any
= (str
? 0 : 1);
1015 entry
->u
.lcom
= lcom
;
1018 (regex
? XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG
, str
) : NULL
);
1020 /* Do not put duplicated community entry. */
1021 if (community_list_dup_check(list
, entry
))
1022 community_entry_free(entry
);
1024 community_list_entry_add(list
, entry
);
1029 /* Unset community-list. When str is NULL, delete all of
1030 community-list entry belongs to the specified name. */
1031 int lcommunity_list_unset(struct community_list_handler
*ch
, const char *name
,
1032 const char *str
, int direct
, int style
)
1034 struct community_entry
*entry
= NULL
;
1035 struct community_list
*list
;
1036 struct lcommunity
*lcom
= NULL
;
1037 regex_t
*regex
= NULL
;
1039 /* Lookup community list. */
1040 list
= community_list_lookup(ch
, name
, LARGE_COMMUNITY_LIST_MASTER
);
1042 return COMMUNITY_LIST_ERR_CANT_FIND_LIST
;
1044 /* Delete all of entry belongs to this community-list. */
1046 community_list_delete(list
);
1050 if (style
== LARGE_COMMUNITY_LIST_STANDARD
)
1051 lcom
= lcommunity_str2com(str
);
1053 regex
= bgp_regcomp(str
);
1055 if (!lcom
&& !regex
)
1056 return COMMUNITY_LIST_ERR_MALFORMED_VAL
;
1059 entry
= community_list_entry_lookup(list
, lcom
, direct
);
1061 entry
= community_list_entry_lookup(list
, str
, direct
);
1064 lcommunity_free(&lcom
);
1066 bgp_regex_free(regex
);
1069 return COMMUNITY_LIST_ERR_CANT_FIND_LIST
;
1071 community_list_entry_delete(list
, entry
);
1076 /* Set extcommunity-list. */
1077 int extcommunity_list_set(struct community_list_handler
*ch
, const char *name
,
1078 const char *str
, int direct
, int style
)
1080 struct community_entry
*entry
= NULL
;
1081 struct community_list
*list
;
1082 struct ecommunity
*ecom
= NULL
;
1083 regex_t
*regex
= NULL
;
1086 return COMMUNITY_LIST_ERR_MALFORMED_VAL
;
1088 /* Get community list. */
1089 list
= community_list_get(ch
, name
, EXTCOMMUNITY_LIST_MASTER
);
1091 /* When community-list already has entry, new entry should have same
1092 style. If you want to have mixed style community-list, you can
1093 comment out this check. */
1094 if (!community_list_empty_p(list
)) {
1095 struct community_entry
*first
;
1099 if (style
!= first
->style
) {
1100 return (first
->style
== EXTCOMMUNITY_LIST_STANDARD
1101 ? COMMUNITY_LIST_ERR_STANDARD_CONFLICT
1102 : COMMUNITY_LIST_ERR_EXPANDED_CONFLICT
);
1106 if (style
== EXTCOMMUNITY_LIST_STANDARD
)
1107 ecom
= ecommunity_str2com(str
, 0, 1);
1109 regex
= bgp_regcomp(str
);
1111 if (!ecom
&& !regex
)
1112 return COMMUNITY_LIST_ERR_MALFORMED_VAL
;
1116 ecommunity_ecom2str(ecom
, ECOMMUNITY_FORMAT_DISPLAY
, 0);
1118 entry
= community_entry_new();
1119 entry
->direct
= direct
;
1120 entry
->style
= style
;
1123 entry
->config
= ecommunity_ecom2str(
1124 ecom
, ECOMMUNITY_FORMAT_COMMUNITY_LIST
, 0);
1126 entry
->config
= XSTRDUP(MTYPE_COMMUNITY_LIST_CONFIG
, str
);
1128 entry
->u
.ecom
= ecom
;
1131 /* Do not put duplicated community entry. */
1132 if (community_list_dup_check(list
, entry
))
1133 community_entry_free(entry
);
1135 community_list_entry_add(list
, entry
);
1136 route_map_notify_dependencies(name
, RMAP_EVENT_ECLIST_ADDED
);
1142 /* Unset extcommunity-list.
1144 * When str is NULL, delete all extcommunity-list entries belonging to the
1147 int extcommunity_list_unset(struct community_list_handler
*ch
, const char *name
,
1148 const char *str
, int direct
, int style
)
1150 struct community_entry
*entry
= NULL
;
1151 struct community_list
*list
;
1152 struct ecommunity
*ecom
= NULL
;
1154 /* Lookup extcommunity list. */
1155 list
= community_list_lookup(ch
, name
, EXTCOMMUNITY_LIST_MASTER
);
1157 return COMMUNITY_LIST_ERR_CANT_FIND_LIST
;
1159 /* Delete all of entry belongs to this extcommunity-list. */
1161 community_list_delete(list
);
1162 route_map_notify_dependencies(name
, RMAP_EVENT_ECLIST_DELETED
);
1166 if (style
== EXTCOMMUNITY_LIST_STANDARD
)
1167 ecom
= ecommunity_str2com(str
, 0, 1);
1170 entry
= community_list_entry_lookup(list
, ecom
, direct
);
1171 ecommunity_free(&ecom
);
1173 entry
= community_list_entry_lookup(list
, str
, direct
);
1176 return COMMUNITY_LIST_ERR_CANT_FIND_LIST
;
1178 community_list_entry_delete(list
, entry
);
1179 route_map_notify_dependencies(name
, RMAP_EVENT_ECLIST_DELETED
);
1184 /* Initializa community-list. Return community-list handler. */
1185 struct community_list_handler
*community_list_init(void)
1187 struct community_list_handler
*ch
;
1188 ch
= XCALLOC(MTYPE_COMMUNITY_LIST_HANDLER
,
1189 sizeof(struct community_list_handler
));
1193 /* Terminate community-list. */
1194 void community_list_terminate(struct community_list_handler
*ch
)
1196 struct community_list_master
*cm
;
1197 struct community_list
*list
;
1199 cm
= &ch
->community_list
;
1200 while ((list
= cm
->num
.head
) != NULL
)
1201 community_list_delete(list
);
1202 while ((list
= cm
->str
.head
) != NULL
)
1203 community_list_delete(list
);
1205 cm
= &ch
->lcommunity_list
;
1206 while ((list
= cm
->num
.head
) != NULL
)
1207 community_list_delete(list
);
1208 while ((list
= cm
->str
.head
) != NULL
)
1209 community_list_delete(list
);
1211 cm
= &ch
->extcommunity_list
;
1212 while ((list
= cm
->num
.head
) != NULL
)
1213 community_list_delete(list
);
1214 while ((list
= cm
->str
.head
) != NULL
)
1215 community_list_delete(list
);
1217 XFREE(MTYPE_COMMUNITY_LIST_HANDLER
, ch
);