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78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/* AS path related definitions.
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Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
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This file is part of GNU Zebra.
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GNU Zebra is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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GNU Zebra is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Zebra; see the file COPYING. If not, write to the Free
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Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* AS path segment type. */
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#define AS_SET 1
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#define AS_SEQUENCE 2
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#define AS_CONFED_SEQUENCE 3
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#define AS_CONFED_SET 4
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/* Private AS range defined in RFC2270. */
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#define BGP_PRIVATE_AS_MIN 64512
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#define BGP_PRIVATE_AS_MAX 65535
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/* AS path may be include some AsSegments. */
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struct aspath
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{
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/* Reference count to this aspath. */
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unsigned long refcnt;
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/* Rawdata length. */
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int length;
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/* AS count. */
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int count;
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/* Rawdata. */
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caddr_t data;
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/* String expression of AS path. This string is used by vty output
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and AS path regular expression match. */
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char *str;
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};
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#define ASPATH_STR_DEFAULT_LEN 32
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/* Prototypes. */
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void aspath_init ();
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struct aspath *aspath_parse ();
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struct aspath *aspath_dup (struct aspath *);
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struct aspath *aspath_aggregate (struct aspath *, struct aspath *);
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struct aspath *aspath_prepend (struct aspath *, struct aspath *);
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struct aspath *aspath_add_seq (struct aspath *, as_t);
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struct aspath *aspath_add_confed_seq (struct aspath *, as_t);
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int aspath_cmp_left (struct aspath *, struct aspath *);
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int aspath_cmp_left_confed (struct aspath *, struct aspath *);
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struct aspath *aspath_delete_confed_seq (struct aspath *);
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struct aspath *aspath_empty ();
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struct aspath *aspath_empty_get ();
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struct aspath *aspath_str2aspath (char *);
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void aspath_free (struct aspath *);
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struct aspath *aspath_intern (struct aspath *);
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void aspath_unintern (struct aspath *);
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const char *aspath_print (struct aspath *);
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void aspath_print_vty (struct vty *, struct aspath *);
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void aspath_print_all_vty (struct vty *);
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unsigned int aspath_key_make (struct aspath *);
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int aspath_loop_check (struct aspath *, as_t);
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int aspath_private_as_check (struct aspath *);
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int aspath_firstas_check (struct aspath *, as_t);
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unsigned long aspath_count ();
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