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