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quagga 1.0.20160315

    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: #define ECOMMUNITY_ENCODE_OPAQUE            0x03
   29: 
   30: /* Low-order octet of the Extended Communities type field.  */
   31: #define ECOMMUNITY_ROUTE_TARGET             0x02
   32: #define ECOMMUNITY_SITE_ORIGIN              0x03
   33: 
   34: /* Low-order octet of the Extended Communities type field for OPAQUE types */
   35: #define ECOMMUNITY_OPAQUE_SUBTYPE_ENCAP     0x0c
   36: 
   37: /* Extended communities attribute string format.  */
   38: #define ECOMMUNITY_FORMAT_ROUTE_MAP            0
   39: #define ECOMMUNITY_FORMAT_COMMUNITY_LIST       1
   40: #define ECOMMUNITY_FORMAT_DISPLAY              2
   41: 
   42: /* Extended Communities value is eight octet long.  */
   43: #define ECOMMUNITY_SIZE                        8
   44: 
   45: /* Extended Communities type flag.  */
   46: #define ECOMMUNITY_FLAG_NON_TRANSITIVE      0x40  
   47: 
   48: /* Extended Communities attribute.  */
   49: struct ecommunity
   50: {
   51:   /* Reference counter.  */
   52:   unsigned long refcnt;
   53: 
   54:   /* Size of Extended Communities attribute.  */
   55:   int size;
   56: 
   57:   /* Extended Communities value.  */
   58:   u_int8_t *val;
   59: 
   60:   /* Human readable format string.  */
   61:   char *str;
   62: };
   63: 
   64: /* Extended community value is eight octet.  */
   65: struct ecommunity_val
   66: {
   67:   char val[ECOMMUNITY_SIZE];
   68: };
   69: 
   70: #define ecom_length(X)    ((X)->size * ECOMMUNITY_SIZE)
   71: 
   72: extern void ecommunity_init (void);
   73: extern void ecommunity_finish (void);
   74: extern void ecommunity_free (struct ecommunity **);
   75: extern struct ecommunity *ecommunity_parse (u_int8_t *, u_short);
   76: extern struct ecommunity *ecommunity_dup (struct ecommunity *);
   77: extern struct ecommunity *ecommunity_merge (struct ecommunity *, struct ecommunity *);
   78: extern struct ecommunity *ecommunity_uniq_sort (struct ecommunity *);
   79: extern struct ecommunity *ecommunity_intern (struct ecommunity *);
   80: extern int ecommunity_cmp (const void *, const void *);
   81: extern void ecommunity_unintern (struct ecommunity **);
   82: extern unsigned int ecommunity_hash_make (void *);
   83: extern struct ecommunity *ecommunity_str2com (const char *, int, int);
   84: extern char *ecommunity_ecom2str (struct ecommunity *, int);
   85: extern int ecommunity_match (const struct ecommunity *, const struct ecommunity *);
   86: extern char *ecommunity_str (struct ecommunity *);
   87: 
   88: #endif /* _QUAGGA_BGP_ECOMMUNITY_H */