bgpd/bgp_community.h

   1 /* Community attribute related functions.
   2    Copyright (C) 1998 Kunihiro Ishiguro
   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_COMMUNITY_H
  22 #define _QUAGGA_BGP_COMMUNITY_H
  23
  24 /* Communities attribute.  */
  25 struct community
  26 {
  27   /* Reference count of communities value.  */
  28   unsigned long refcnt;
  29
  30   /* Communities value size.  */
  31   int size;
  32
  33   /* Communities value.  */
  34   u_int32_t *val;
  35
  36   /* String of community attribute.  This sring is used by vty output
  37      and expanded community-list for regular expression match.  */
  38   char *str;
  39 };
  40
  41 /* Well-known communities value.  */
  42 #define COMMUNITY_INTERNET              0x0
  43 #define COMMUNITY_NO_EXPORT             0xFFFFFF01
  44 #define COMMUNITY_NO_ADVERTISE          0xFFFFFF02
  45 #define COMMUNITY_NO_EXPORT_SUBCONFED   0xFFFFFF03
  46 #define COMMUNITY_LOCAL_AS              0xFFFFFF03
  47
  48 /* Macros of community attribute.  */
  49 #define com_length(X)    ((X)->size * 4)
  50 #define com_lastval(X)   ((X)->val + (X)->size - 1)
  51 #define com_nthval(X,n)  ((X)->val + (n))
  52
  53 /* Prototypes of communities attribute functions.  */
  54 extern void community_init (void);
  55 extern void community_finish (void);
  56 extern void community_free (struct community *);
  57 extern struct community *community_uniq_sort (struct community *);
  58 extern struct community *community_parse (u_int32_t *, u_short);
  59 extern struct community *community_intern (struct community *);
  60 extern void community_unintern (struct community *);
  61 extern char *community_str (struct community *);
  62 extern unsigned int community_hash_make (struct community *);
  63 extern struct community *community_str2com (const char *);
  64 extern int community_match (const struct community *, const struct community *);
  65 extern int community_cmp (const struct community *, const struct community *);
  66 extern struct community *community_merge (struct community *, struct community *);
  67 extern struct community *community_delete (struct community *, struct community *);
  68 extern struct community *community_dup (struct community *);
  69 extern int community_include (struct community *, u_int32_t);
  70 extern void community_del_val (struct community *, u_int32_t *);
  71 extern unsigned long community_count (void);
  72 extern struct hash *community_hash (void);
  73
  74 #endif /* _QUAGGA_BGP_COMMUNITY_H */