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authorpaul <paul>2002-12-13 20:15:29 +0000
committerpaul <paul>2002-12-13 20:15:29 +0000
commit718e3744195351130f4ce7dbe0613f4b3e23df93 (patch)
treebac2ad39971cd43f31241ef123bd4e470f695ac9 /bgpd/bgp_aspath.h
Initial revision
Diffstat (limited to 'bgpd/bgp_aspath.h')
-rw-r--r--bgpd/bgp_aspath.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/bgpd/bgp_aspath.h b/bgpd/bgp_aspath.h
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+/* AS path related definitions.
+ Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
+
+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. */
+
+/* AS path segment type. */
+#define AS_SET 1
+#define AS_SEQUENCE 2
+#define AS_CONFED_SEQUENCE 3
+#define AS_CONFED_SET 4
+
+/* Private AS range defined in RFC2270. */
+#define BGP_PRIVATE_AS_MIN 64512
+#define BGP_PRIVATE_AS_MAX 65535
+
+/* AS path may be include some AsSegments. */
+struct aspath
+{
+ /* Reference count to this aspath. */
+ unsigned long refcnt;
+
+ /* Rawdata length. */
+ int length;
+
+ /* AS count. */
+ int count;
+
+ /* Rawdata. */
+ caddr_t data;
+
+ /* String expression of AS path. This string is used by vty output
+ and AS path regular expression match. */
+ char *str;
+};
+
+#define ASPATH_STR_DEFAULT_LEN 32
+
+/* Prototypes. */
+void aspath_init ();
+struct aspath *aspath_parse ();
+struct aspath *aspath_dup (struct aspath *);
+struct aspath *aspath_aggregate (struct aspath *, struct aspath *);
+struct aspath *aspath_prepend (struct aspath *, struct aspath *);
+struct aspath *aspath_add_seq (struct aspath *, as_t);
+struct aspath *aspath_add_confed_seq (struct aspath *, as_t);
+int aspath_cmp_left (struct aspath *, struct aspath *);
+int aspath_cmp_left_confed (struct aspath *, struct aspath *);
+struct aspath *aspath_delete_confed_seq (struct aspath *);
+struct aspath *aspath_empty ();
+struct aspath *aspath_empty_get ();
+struct aspath *aspath_str2aspath (char *);
+void aspath_free (struct aspath *);
+struct aspath *aspath_intern (struct aspath *);
+void aspath_unintern (struct aspath *);
+const char *aspath_print (struct aspath *);
+void aspath_print_vty (struct vty *, struct aspath *);
+void aspath_print_all_vty (struct vty *);
+unsigned int aspath_key_make (struct aspath *);
+int aspath_loop_check (struct aspath *, as_t);
+int aspath_private_as_check (struct aspath *);
+int aspath_firstas_check (struct aspath *, as_t);
+unsigned long aspath_count ();