Initial revision
diff --git a/isisd/isis_adjacency.h b/isisd/isis_adjacency.h
new file mode 100644
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--- /dev/null
+++ b/isisd/isis_adjacency.h
@@ -0,0 +1,126 @@
+/*
+ * IS-IS Rout(e)ing protocol - isis_adjacency.h
+ * IS-IS adjacency handling
+ *
+ * Copyright (C) 2001,2002 Sampo Saaristo
+ * Tampere University of Technology
+ * Institute of Communications Engineering
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public Licenseas published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_ISIS_ADJACENCY_H
+#define _ZEBRA_ISIS_ADJACENCY_H
+
+enum isis_adj_usage
+{
+ ISIS_ADJ_NONE,
+ ISIS_ADJ_LEVEL1,
+ ISIS_ADJ_LEVEL2,
+ ISIS_ADJ_LEVEL1AND2
+};
+
+enum isis_system_type
+{
+ ISIS_SYSTYPE_UNKNOWN,
+ ISIS_SYSTYPE_ES,
+ ISIS_SYSTYPE_IS,
+ ISIS_SYSTYPE_L1_IS,
+ ISIS_SYSTYPE_L2_IS
+};
+
+enum isis_adj_state
+{
+ ISIS_ADJ_INITIALIZING,
+ ISIS_ADJ_UP,
+ ISIS_ADJ_DOWN
+};
+
+/*
+ * we use the following codes to give an indication _why_
+ * a specific adjacency is up or down
+ */
+enum isis_adj_updown_reason
+{
+ ISIS_ADJ_REASON_SEENSELF,
+ ISIS_ADJ_REASON_AREA_MISMATCH,
+ ISIS_ADJ_REASON_HOLDTIMER_EXPIRED,
+ ISIS_ADJ_REASON_AUTH_FAILED,
+ ISIS_ADJ_REASON_CHECKSUM_FAILED
+};
+
+#define DIS_RECORDS 8 /* keep the last 8 DIS state changes on record */
+
+struct isis_dis_record {
+ int dis; /* is our neighbor the DIS ? */ time_t last_dis_change; /* timestamp for last dis change */
+};
+
+struct isis_adjacency{
+ u_char snpa[ETH_ALEN]; /* NeighbourSNPAAddress */
+ u_char sysid[ISIS_SYS_ID_LEN]; /* neighbourSystemIdentifier */
+ u_char lanid[ISIS_SYS_ID_LEN+1]; /* LAN id on bcast circuits */
+ int dischanges[ISIS_LEVELS]; /* how many DIS changes ?*/
+ /* an array of N levels for M records */
+ struct isis_dis_record dis_record[DIS_RECORDS * ISIS_LEVELS];
+ enum isis_adj_state adj_state; /* adjacencyState */
+ enum isis_adj_usage adj_usage; /* adjacencyUsage */
+ struct list *area_addrs; /* areaAdressesOfNeighbour */
+ struct nlpids nlpids; /* protocols spoken ... */
+ struct list *ipv4_addrs;
+#ifdef HAVE_IPV6
+ struct list *ipv6_addrs;
+#endif /* HAVE_IPV6 */
+ u_char prio[ISIS_LEVELS]; /* priorityOfNeighbour for DIS*/
+ int circuit_t; /* from hello PDU hdr */
+ int level; /* level (1 or 2) */
+ enum isis_system_type sys_type; /* neighbourSystemType */
+ u_int16_t hold_time; /* entryRemainingTime */
+ u_int32_t last_upd;
+ u_int32_t last_flap; /* last time the adj flapped */
+ int flaps; /* number of adjacency flaps */
+ struct thread *t_expire; /* expire after hold_time */
+ struct isis_circuit *circuit; /* back pointer */
+};
+
+
+struct isis_adjacency *isis_adj_lookup (u_char *sysid, struct list *adjdb);
+struct isis_adjacency *isis_adj_lookup_snpa (u_char *ssnpa,
+ struct list *adjdb);
+struct isis_adjacency *isis_new_adj (u_char *id, u_char *snpa, int level,
+ struct isis_circuit *circuit);
+void isis_delete_adj (struct isis_adjacency *adj, struct list *adjdb);
+void isis_adj_state_change (struct isis_adjacency *adj,
+ enum isis_adj_state state, char *reason);
+void isis_adj_print (struct isis_adjacency *adj);
+int isis_adj_expire (struct thread *thread);
+void isis_adj_print_vty (struct isis_adjacency *adj, struct vty *vty);
+void isis_adj_print_vty_detail (struct isis_adjacency *adj, struct vty *vty);
+void isis_adj_print_vty_extensive (struct isis_adjacency *adj,
+ struct vty *vty);
+void isis_adj_p2p_print_vty (struct isis_adjacency *adj, struct vty *vty);
+void isis_adj_p2p_print_vty_detail (struct isis_adjacency *adj,
+ struct vty *vty);
+void isis_adj_p2p_print_vty_extensive (struct isis_adjacency *adj,
+ struct vty *vty);
+
+void isis_adj_build_neigh_list (struct list *adjdb, struct list *list);
+void isis_adj_build_up_list (struct list *adjdb, struct list *list);
+void isis_adjdb_iterate (struct list *adjdb,
+ void (*func)(struct isis_adjacency*,
+ void *), void *arg);
+
+#endif /* ISIS_ADJACENCY_H */
+