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/* BGP Community list.
* Copyright (C) 1999 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _QUAGGA_BGP_CLIST_H
#define _QUAGGA_BGP_CLIST_H
#include "jhash.h"
/* Master Community-list. */
#define COMMUNITY_LIST_MASTER 0
#define EXTCOMMUNITY_LIST_MASTER 1
#define LARGE_COMMUNITY_LIST_MASTER 2
/* Community-list deny and permit. */
#define COMMUNITY_DENY 0
#define COMMUNITY_PERMIT 1
/* Number and string based community-list name. */
#define COMMUNITY_LIST_STRING 0
#define COMMUNITY_LIST_NUMBER 1
#define COMMUNITY_SEQ_NUMBER_AUTO -1
/* Community-list entry types. */
#define COMMUNITY_LIST_STANDARD 0 /* Standard community-list. */
#define COMMUNITY_LIST_EXPANDED 1 /* Expanded community-list. */
#define EXTCOMMUNITY_LIST_STANDARD 2 /* Standard extcommunity-list. */
#define EXTCOMMUNITY_LIST_EXPANDED 3 /* Expanded extcommunity-list. */
#define LARGE_COMMUNITY_LIST_STANDARD 4 /* Standard Large community-list. */
#define LARGE_COMMUNITY_LIST_EXPANDED 5 /* Expanded Large community-list. */
/* Community-list. */
struct community_list {
/* Name of the community-list. */
char *name;
/* Stored hash value of name, to further speed up hash operations */
uint32_t name_hash;
/* String or number. */
int sort;
/* Link to upper list. */
struct community_list_list *parent;
/* Linked list for other community-list. */
struct community_list *next;
struct community_list *prev;
/* Community-list entry in this community-list. */
struct community_entry *head;
struct community_entry *tail;
};
/* Each entry in community-list. */
struct community_entry {
struct community_entry *next;
struct community_entry *prev;
/* Permit or deny. */
uint8_t direct;
/* Standard or expanded. */
uint8_t style;
/* Any match. */
bool any;
/* Sequence number. */
int64_t seq;
/* Community structure. */
union {
struct community *com;
struct ecommunity *ecom;
struct lcommunity *lcom;
} u;
/* Configuration string. */
char *config;
/* Expanded community-list regular expression. */
regex_t *reg;
};
/* Linked list of community-list. */
struct community_list_list {
struct community_list *head;
struct community_list *tail;
};
/* Master structure of community-list and extcommunity-list. */
struct community_list_master {
struct community_list_list num;
struct community_list_list str;
struct hash *hash;
};
/* Community-list handler. community_list_init() returns this
structure as handler. */
struct community_list_handler {
/* Community-list. */
struct community_list_master community_list;
/* Exteded community-list. */
struct community_list_master extcommunity_list;
/* Large community-list. */
struct community_list_master lcommunity_list;
};
/* Error code of community-list. */
#define COMMUNITY_LIST_ERR_CANT_FIND_LIST -1
#define COMMUNITY_LIST_ERR_MALFORMED_VAL -2
#define COMMUNITY_LIST_ERR_STANDARD_CONFLICT -3
#define COMMUNITY_LIST_ERR_EXPANDED_CONFLICT -4
/* Handler. */
extern struct community_list_handler *bgp_clist;
/* Prototypes. */
extern struct community_list_handler *community_list_init(void);
extern void community_list_terminate(struct community_list_handler *);
extern int community_list_set(struct community_list_handler *ch,
const char *name, const char *str,
const char *seq, int direct, int style);
extern int community_list_unset(struct community_list_handler *ch,
const char *name, const char *str,
const char *seq, int direct, int style);
extern int extcommunity_list_set(struct community_list_handler *ch,
const char *name, const char *str,
const char *seq, int direct, int style);
extern int extcommunity_list_unset(struct community_list_handler *ch,
const char *name, const char *str,
const char *seq, int direct, int style);
extern int lcommunity_list_set(struct community_list_handler *ch,
const char *name, const char *str,
const char *seq, int direct, int style);
extern int lcommunity_list_unset(struct community_list_handler *ch,
const char *name, const char *str,
const char *seq, int direct, int style);
extern struct community_list_master *
community_list_master_lookup(struct community_list_handler *, int);
extern struct community_list *
community_list_lookup(struct community_list_handler *c, const char *name,
uint32_t name_hash, int master);
extern bool community_list_match(struct community *, struct community_list *);
extern bool ecommunity_list_match(struct ecommunity *, struct community_list *);
extern bool lcommunity_list_match(struct lcommunity *, struct community_list *);
extern bool community_list_exact_match(struct community *,
struct community_list *);
extern bool lcommunity_list_exact_match(struct lcommunity *lcom,
struct community_list *list);
extern struct community *community_list_match_delete(struct community *,
struct community_list *);
extern struct lcommunity *
lcommunity_list_match_delete(struct lcommunity *lcom,
struct community_list *list);
static inline uint32_t bgp_clist_hash_key(char *name)
{
return jhash(name, strlen(name), 0xdeadbeaf);
}
#endif /* _QUAGGA_BGP_CLIST_H */
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