/* 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. */
+ * 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 this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef _QUAGGA_BGP_ASPATH_H
#define _QUAGGA_BGP_ASPATH_H
+#include "lib/json.h"
+
/* AS path segment type. */
#define AS_SET 1
#define AS_SEQUENCE 2
#define BGP_PRIVATE_AS_MIN 64512U
#define BGP_PRIVATE_AS_MAX 65535U
-#define BGP_AS_MAX 65535U
+/* Private 4 byte AS range defined in RFC6996. */
+#define BGP_PRIVATE_AS4_MIN 4200000000U
+#define BGP_PRIVATE_AS4_MAX 4294967294U
+
+/* we leave BGP_AS_MAX as the 16bit AS MAX number. */
+#define BGP_AS_MAX 65535U
+#define BGP_AS4_MAX 4294967295U
+/* Transition 16Bit AS as defined by IANA */
+#define BGP_AS_TRANS 23456U
+
+#define BGP_AS_IS_PRIVATE(ASN) \
+ (((ASN) >= BGP_PRIVATE_AS_MIN && (ASN) <= BGP_PRIVATE_AS_MAX) \
+ || ((ASN) >= BGP_PRIVATE_AS4_MIN && (ASN) <= BGP_PRIVATE_AS4_MAX))
/* AS_PATH segment data in abstracted form, no limit is placed on length */
-struct assegment
-{
- struct assegment *next;
- as_t *as;
- u_short length;
- u_char type;
+struct assegment {
+ struct assegment *next;
+ as_t *as;
+ unsigned short length;
+ uint8_t type;
};
/* AS path may be include some AsSegments. */
-struct aspath
-{
- /* Reference count to this aspath. */
- unsigned long refcnt;
-
- /* segment data */
- struct assegment *segments;
-
- /* String expression of AS path. This string is used by vty output
- and AS path regular expression match. */
- char *str;
+struct aspath {
+ /* Reference count to this aspath. */
+ unsigned long refcnt;
+
+ /* segment data */
+ struct assegment *segments;
+
+ /* AS path as a json object */
+ json_object *json;
+
+ /* String expression of AS path. This string is used by vty output
+ and AS path regular expression match. */
+ char *str;
+ unsigned short str_len;
};
#define ASPATH_STR_DEFAULT_LEN 32
/* Prototypes. */
-extern void aspath_init (void);
-extern void aspath_finish (void);
-extern struct aspath *aspath_parse (struct stream *, size_t);
-extern struct aspath *aspath_dup (struct aspath *);
-extern struct aspath *aspath_aggregate (struct aspath *, struct aspath *);
-extern struct aspath *aspath_prepend (struct aspath *, struct aspath *);
-extern struct aspath *aspath_add_seq (struct aspath *, as_t);
-extern struct aspath *aspath_add_confed_seq (struct aspath *, as_t);
-extern int aspath_cmp_left (struct aspath *, struct aspath *);
-extern int aspath_cmp_left_confed (struct aspath *, struct aspath *);
-extern struct aspath *aspath_delete_confed_seq (struct aspath *);
-extern struct aspath *aspath_empty (void);
-extern struct aspath *aspath_empty_get (void);
-extern struct aspath *aspath_str2aspath (const char *);
-extern void aspath_free (struct aspath *);
-extern struct aspath *aspath_intern (struct aspath *);
-extern void aspath_unintern (struct aspath *);
-extern const char *aspath_print (struct aspath *);
-extern void aspath_print_vty (struct vty *, const char *, struct aspath *);
-extern void aspath_print_all_vty (struct vty *);
-extern unsigned int aspath_key_make (struct aspath *);
-extern int aspath_loop_check (struct aspath *, as_t);
-extern int aspath_private_as_check (struct aspath *);
-extern int aspath_firstas_check (struct aspath *, as_t);
-extern unsigned long aspath_count (void);
-extern unsigned int aspath_count_hops (struct aspath *);
-extern unsigned int aspath_count_confeds (struct aspath *);
-extern unsigned int aspath_size (struct aspath *);
-extern as_t aspath_highest (struct aspath *);
-extern void aspath_put (struct stream *, struct aspath *);
+extern void aspath_init(void);
+extern void aspath_finish(void);
+extern struct aspath *aspath_parse(struct stream *, size_t, int);
+extern struct aspath *aspath_dup(struct aspath *);
+extern struct aspath *aspath_aggregate(struct aspath *, struct aspath *);
+extern struct aspath *aspath_prepend(struct aspath *, struct aspath *);
+extern struct aspath *aspath_filter_exclude(struct aspath *, struct aspath *);
+extern struct aspath *aspath_add_seq_n(struct aspath *, as_t, unsigned);
+extern struct aspath *aspath_add_seq(struct aspath *, as_t);
+extern struct aspath *aspath_add_confed_seq(struct aspath *, as_t);
+extern bool aspath_cmp(const void *as1, const void *as2);
+extern int aspath_cmp_left(const struct aspath *, const struct aspath *);
+extern bool aspath_cmp_left_confed(const struct aspath *as1,
+ const struct aspath *as2xs);
+extern struct aspath *aspath_delete_confed_seq(struct aspath *);
+extern struct aspath *aspath_empty(void);
+extern struct aspath *aspath_empty_get(void);
+extern struct aspath *aspath_str2aspath(const char *);
+extern void aspath_str_update(struct aspath *as, bool make_json);
+extern void aspath_free(struct aspath *);
+extern struct aspath *aspath_intern(struct aspath *);
+extern void aspath_unintern(struct aspath **);
+extern const char *aspath_print(struct aspath *);
+extern void aspath_print_vty(struct vty *, const char *, struct aspath *,
+ const char *);
+extern void aspath_print_all_vty(struct vty *);
+extern unsigned int aspath_key_make(void *);
+extern unsigned int aspath_get_first_as(struct aspath *);
+extern unsigned int aspath_get_last_as(struct aspath *);
+extern int aspath_loop_check(struct aspath *, as_t);
+extern int aspath_private_as_check(struct aspath *);
+extern int aspath_single_asn_check(struct aspath *, as_t asn);
+extern struct aspath *aspath_replace_specific_asn(struct aspath *aspath,
+ as_t target_asn,
+ as_t our_asn);
+extern struct aspath *aspath_replace_private_asns(struct aspath *aspath,
+ as_t asn);
+extern struct aspath *aspath_remove_private_asns(struct aspath *aspath);
+extern int aspath_firstas_check(struct aspath *, as_t);
+extern int aspath_confed_check(struct aspath *);
+extern int aspath_left_confed_check(struct aspath *);
+extern unsigned long aspath_count(void);
+extern unsigned int aspath_count_hops(const struct aspath *);
+extern unsigned int aspath_count_confeds(struct aspath *);
+extern unsigned int aspath_size(struct aspath *);
+extern as_t aspath_highest(struct aspath *);
+extern as_t aspath_leftmost(struct aspath *);
+extern size_t aspath_put(struct stream *, struct aspath *, int);
+
+extern struct aspath *aspath_reconcile_as4(struct aspath *, struct aspath *);
+extern unsigned int aspath_has_as4(struct aspath *);
/* For SNMP BGP4PATHATTRASPATHSEGMENT, might be useful for debug */
-extern u_char *aspath_snmp_pathseg (struct aspath *, size_t *);
+extern uint8_t *aspath_snmp_pathseg(struct aspath *, size_t *);
#endif /* _QUAGGA_BGP_ASPATH_H */
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