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    1: /* BGP Extended Communities Attribute.
    2:    Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
    3: 
    4: This file is part of GNU Zebra.
    5: 
    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
    9: later version.
   10: 
   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.
   15: 
   16: You should have received a copy of the GNU General Public License
   17: along with GNU Zebra; see the file COPYING.  If not, write to the Free
   18: Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   19: 02111-1307, USA.  */
   20: 
   21: #ifndef _QUAGGA_BGP_ECOMMUNITY_H
   22: #define _QUAGGA_BGP_ECOMMUNITY_H
   23: 
   24: /* High-order octet of the Extended Communities type field.  */
   25: #define ECOMMUNITY_ENCODE_AS                0x00
   26: #define ECOMMUNITY_ENCODE_IP                0x01
   27: #define ECOMMUNITY_ENCODE_AS4               0x02
   28: 
   29: /* Low-order octet of the Extended Communityes type field.  */
   30: #define ECOMMUNITY_ROUTE_TARGET             0x02
   31: #define ECOMMUNITY_SITE_ORIGIN              0x03
   32: 
   33: /* Extended communities attribute string format.  */
   34: #define ECOMMUNITY_FORMAT_ROUTE_MAP            0
   35: #define ECOMMUNITY_FORMAT_COMMUNITY_LIST       1
   36: #define ECOMMUNITY_FORMAT_DISPLAY              2
   37: 
   38: /* Extended Communities value is eight octet long.  */
   39: #define ECOMMUNITY_SIZE                        8
   40: 
   41: /* Extended Communities type flag.  */
   42: #define ECOMMUNITY_FLAG_NON_TRANSITIVE      0x40  
   43: 
   44: /* Extended Communities attribute.  */
   45: struct ecommunity
   46: {
   47:   /* Reference counter.  */
   48:   unsigned long refcnt;
   49: 
   50:   /* Size of Extended Communities attribute.  */
   51:   int size;
   52: 
   53:   /* Extended Communities value.  */
   54:   u_int8_t *val;
   55: 
   56:   /* Human readable format string.  */
   57:   char *str;
   58: };
   59: 
   60: /* Extended community value is eight octet.  */
   61: struct ecommunity_val
   62: {
   63:   char val[ECOMMUNITY_SIZE];
   64: };
   65: 
   66: #define ecom_length(X)    ((X)->size * ECOMMUNITY_SIZE)
   67: 
   68: extern void ecommunity_init (void);
   69: extern void ecommunity_finish (void);
   70: extern void ecommunity_free (struct ecommunity **);
   71: extern struct ecommunity *ecommunity_parse (u_int8_t *, u_short);
   72: extern struct ecommunity *ecommunity_dup (struct ecommunity *);
   73: extern struct ecommunity *ecommunity_merge (struct ecommunity *, struct ecommunity *);
   74: extern struct ecommunity *ecommunity_uniq_sort (struct ecommunity *);
   75: extern struct ecommunity *ecommunity_intern (struct ecommunity *);
   76: extern int ecommunity_cmp (const void *, const void *);
   77: extern void ecommunity_unintern (struct ecommunity **);
   78: extern unsigned int ecommunity_hash_make (void *);
   79: extern struct ecommunity *ecommunity_str2com (const char *, int, int);
   80: extern char *ecommunity_ecom2str (struct ecommunity *, int);
   81: extern int ecommunity_match (const struct ecommunity *, const struct ecommunity *);
   82: extern char *ecommunity_str (struct ecommunity *);
   83: 
   84: #endif /* _QUAGGA_BGP_ECOMMUNITY_H */