bgp_ecommunity.h
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上传日期:2009-11-15
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- /* BGP Extended Communities Attribute.
- Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
- 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 GNU Zebra; see the file COPYING. If not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
- /* Extended Communities Transitive flag. */
- #define ECOMMUNITY_FLAG_NON_TRANSITIVE 0x40
- /* High-order octet of the Extended Communities type field. */
- #define ECOMMUNITY_ENCODE_AS 0x00
- #define ECOMMUNITY_ENCODE_IP 0x01
- #define ECOMMUNITY_ENCODE_4OCTET_AS 0x02
- #define ECOMMUNITY_ENCODE_OPAQUE 0x03
- /* Low-order octet of the Extended Communityes type field. */
- #define ECOMMUNITY_TYPE_COST_COMMUNITY 0x01
- #define ECOMMUNITY_TYPE_ROUTE_TARGET 0x02
- #define ECOMMUNITY_TYPE_SITE_ORIGIN 0x03
- /* High-order octet and Low-order octet of the Extended Communityes type field. */
- #define ECOMMUNITY_COST_COMMUNITY 0x4301
- /* Extended communities attribute string format. */
- #define ECOMMUNITY_FORMAT_CONFIG 0
- #define ECOMMUNITY_FORMAT_DISPLAY 1
- #define ECOMMUNITY_FORMAT_RMAP 2
- /* Extended communities Cost Community */
- #define ECOMMUNITY_COST_POI_IGP 129
- /* Extended Communities value is eight octet long. */
- #define ECOMMUNITY_SIZE 8
-
- /* Cost community default value. */
- #define COST_COMMUNITY_DEFAULT_COST 0x7FFFFFFF
- /* Extended Communities attribute. */
- struct ecommunity
- {
- /* Reference counter. */
- unsigned long refcnt;
- /* Size of Extended Communities attribute. */
- int size;
- /* Extended Communities value. */
- u_char *val;
- /* Human readable format string. */
- char *str;
- };
- /* Extended community value is eight octet. */
- struct ecommunity_val
- {
- char val[ECOMMUNITY_SIZE];
- };
- struct ecommunity_cost
- {
- u_int16_t type;
- u_char poi;
- u_char id;
- u_int32_t val;
- };
- #define ecom_length(X) ((X)->size * ECOMMUNITY_SIZE)
- void ecommunity_init (void);
- void ecommunity_free (struct ecommunity *);
- struct ecommunity *ecommunity_new (void);
- struct ecommunity *ecommunity_parse (char *, u_short);
- struct ecommunity *ecommunity_dup (struct ecommunity *);
- struct ecommunity *ecommunity_merge (struct ecommunity *, struct ecommunity *);
- struct ecommunity *ecommunity_intern (struct ecommunity *);
- int ecommunity_cmp (struct ecommunity *, struct ecommunity *);
- void ecommunity_unintern (struct ecommunity *);
- unsigned int ecommunity_hash_make (struct ecommunity *);
- struct ecommunity *ecommunity_str2com (char *, int, int);
- char *ecommunity_ecom2str (struct ecommunity *, int);
- int ecommunity_match (struct ecommunity *, struct ecommunity *);
- char *ecommunity_str (struct ecommunity *);
- struct ecommunity *ecommunity_cost_str2com (char *, u_char);
- int ecommunity_cost_cmp (struct ecommunity *, struct ecommunity *, u_char);