Initial revision
diff --git a/ripd/ripd.h b/ripd/ripd.h
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--- /dev/null
+++ b/ripd/ripd.h
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+/* RIP related values and structures.
+ * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
+ *
+ * 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.
+ */
+
+#ifndef _ZEBRA_RIP_H
+#define _ZEBRA_RIP_H
+
+/* RIP version number. */
+#define RIPv1 1
+#define RIPv2 2
+
+/* RIP command list. */
+#define RIP_REQUEST 1
+#define RIP_RESPONSE 2
+#define RIP_TRACEON 3 /* Obsolete */
+#define RIP_TRACEOFF 4 /* Obsolete */
+#define RIP_POLL 5
+#define RIP_POLL_ENTRY 6
+#define RIP_COMMAND_MAX 7
+
+/* RIP metric infinity value.*/
+#define RIP_METRIC_INFINITY 16
+
+/* Normal RIP packet min and max size. */
+#define RIP_PACKET_MINSIZ 4
+#define RIP_PACKET_MAXSIZ 512
+
+#define RIP_HEADER_SIZE 4
+#define RIP_RTE_SIZE 20
+
+/* Max count of routing table entry in one rip packet. */
+#define RIP_MAX_RTE 25
+
+/* RIP version 2 multicast address. */
+#ifndef INADDR_RIP_GROUP
+#define INADDR_RIP_GROUP 0xe0000009 /* 224.0.0.9 */
+#endif
+
+/* RIP timers */
+#define RIP_UPDATE_TIMER_DEFAULT 30
+#define RIP_TIMEOUT_TIMER_DEFAULT 180
+#define RIP_GARBAGE_TIMER_DEFAULT 120
+
+/* RIP peer timeout value. */
+#define RIP_PEER_TIMER_DEFAULT 180
+
+/* RIP port number. */
+#define RIP_PORT_DEFAULT 520
+#define RIP_VTY_PORT 2602
+#define RIP_VTYSH_PATH "/tmp/.ripd"
+
+/* Default configuration file name. */
+#define RIPD_DEFAULT_CONFIG "ripd.conf"
+
+/* RIP route types. */
+#define RIP_ROUTE_RTE 0
+#define RIP_ROUTE_STATIC 1
+#define RIP_ROUTE_DEFAULT 2
+#define RIP_ROUTE_REDISTRIBUTE 3
+#define RIP_ROUTE_INTERFACE 4
+
+/* RIP MD5 authentication. */
+#define RIP_AUTH_MD5_SIZE 16
+
+/* RIP structure. */
+struct rip
+{
+ /* RIP socket. */
+ int sock;
+
+ /* Default version of rip instance. */
+ u_char version;
+
+ /* Output buffer of RIP. */
+ struct stream *obuf;
+
+ /* RIP routing information base. */
+ struct route_table *table;
+
+ /* RIP only static routing information. */
+ struct route_table *route;
+
+ /* RIP neighbor. */
+ struct route_table *neighbor;
+
+ /* RIP threads. */
+ struct thread *t_read;
+
+ /* Update and garbage timer. */
+ struct thread *t_update;
+
+ /* Triggered update hack. */
+ int trigger;
+ struct thread *t_triggered_update;
+ struct thread *t_triggered_interval;
+
+ /* RIP timer values. */
+ unsigned long update_time;
+ unsigned long timeout_time;
+ unsigned long garbage_time;
+
+ /* RIP default metric. */
+ int default_metric;
+
+ /* RIP default-information originate. */
+ u_char default_information;
+ char *default_information_route_map;
+
+ /* RIP default distance. */
+ u_char distance;
+ struct route_table *distance_table;
+
+ /* For redistribute route map. */
+ struct
+ {
+ char *name;
+ struct route_map *map;
+ int metric_config;
+ u_int32_t metric;
+ } route_map[ZEBRA_ROUTE_MAX];
+};
+
+/* RIP routing table entry which belong to rip_packet. */
+struct rte
+{
+ u_int16_t family; /* Address family of this route. */
+ u_int16_t tag; /* Route Tag which included in RIP2 packet. */
+ struct in_addr prefix; /* Prefix of rip route. */
+ struct in_addr mask; /* Netmask of rip route. */
+ struct in_addr nexthop; /* Next hop of rip route. */
+ u_int32_t metric; /* Metric value of rip route. */
+};
+
+/* RIP packet structure. */
+struct rip_packet
+{
+ unsigned char command; /* Command type of RIP packet. */
+ unsigned char version; /* RIP version which coming from peer. */
+ unsigned char pad1; /* Padding of RIP packet header. */
+ unsigned char pad2; /* Same as above. */
+ struct rte rte[1]; /* Address structure. */
+};
+
+/* Buffer to read RIP packet. */
+union rip_buf
+{
+ struct rip_packet rip_packet;
+ char buf[RIP_PACKET_MAXSIZ];
+};
+
+/* RIP route information. */
+struct rip_info
+{
+ /* This route's type. */
+ int type;
+
+ /* Sub type. */
+ int sub_type;
+
+ /* RIP nexthop. */
+ struct in_addr nexthop;
+ struct in_addr from;
+
+ /* Which interface does this route come from. */
+ unsigned int ifindex;
+
+ /* Metric of this route. */
+ u_int32_t metric;
+
+ /* Tag information of this route. */
+ u_int16_t tag;
+
+ /* Flags of RIP route. */
+#define RIP_RTF_FIB 1
+#define RIP_RTF_CHANGED 2
+ u_char flags;
+
+ /* Garbage collect timer. */
+ struct thread *t_timeout;
+ struct thread *t_garbage_collect;
+
+ /* Route-map futures - this variables can be changed. */
+ struct in_addr nexthop_out;
+ u_char metric_set;
+ u_int32_t metric_out;
+ unsigned int ifindex_out;
+
+ struct route_node *rp;
+
+ u_char distance;
+
+#ifdef NEW_RIP_TABLE
+ struct rip_info *next;
+ struct rip_info *prev;
+#endif /* NEW_RIP_TABLE */
+};
+
+/* RIP specific interface configuration. */
+struct rip_interface
+{
+ /* RIP is enabled on this interface. */
+ int enable_network;
+ int enable_interface;
+
+ /* RIP is running on this interface. */
+ int running;
+
+ /* RIP version control. */
+ int ri_send;
+ int ri_receive;
+
+ /* RIPv2 authentication type. */
+#define RIP_NO_AUTH 0
+#define RIP_AUTH_DATA 1
+#define RIP_AUTH_SIMPLE_PASSWORD 2
+#define RIP_AUTH_MD5 3
+ int auth_type;
+
+ /* RIPv2 authentication string. */
+ char *auth_str;
+
+ /* RIPv2 authentication key chain. */
+ char *key_chain;
+
+ /* Split horizon flag. */
+ int split_horizon;
+ int split_horizon_default;
+
+ /* For filter type slot. */
+#define RIP_FILTER_IN 0
+#define RIP_FILTER_OUT 1
+#define RIP_FILTER_MAX 2
+
+ /* Access-list. */
+ struct access_list *list[RIP_FILTER_MAX];
+
+ /* Prefix-list. */
+ struct prefix_list *prefix[RIP_FILTER_MAX];
+
+ /* Wake up thread. */
+ struct thread *t_wakeup;
+
+ /* Interface statistics. */
+ int recv_badpackets;
+ int recv_badroutes;
+ int sent_updates;
+
+ /* Passive interface. */
+ int passive;
+};
+
+/* RIP peer information. */
+struct rip_peer
+{
+ /* Peer address. */
+ struct in_addr addr;
+
+ /* Peer RIP tag value. */
+ int domain;
+
+ /* Last update time. */
+ time_t uptime;
+
+ /* Peer RIP version. */
+ u_char version;
+
+ /* Statistics. */
+ int recv_badpackets;
+ int recv_badroutes;
+
+ /* Timeout thread. */
+ struct thread *t_timeout;
+};
+
+struct rip_md5_info
+{
+ u_int16_t family;
+ u_int16_t type;
+ u_int16_t packet_len;
+ u_char keyid;
+ u_char auth_len;
+ u_int32_t sequence;
+ u_int32_t reserv1;
+ u_int32_t reserv2;
+};
+
+struct rip_md5_data
+{
+ u_int16_t family;
+ u_int16_t type;
+ u_char digest[16];
+};
+
+/* RIP accepet/announce methods. */
+#define RI_RIP_UNSPEC 0
+#define RI_RIP_VERSION_1 1
+#define RI_RIP_VERSION_2 2
+#define RI_RIP_VERSION_1_AND_2 3
+
+/* Default value for "default-metric" command. */
+#define RIP_DEFAULT_METRIC_DEFAULT 1
+
+/* RIP event. */
+enum rip_event
+{
+ RIP_READ,
+ RIP_UPDATE_EVENT,
+ RIP_TRIGGERED_UPDATE,
+};
+
+/* Macro for timer turn on. */
+#define RIP_TIMER_ON(T,F,V) \
+ do { \
+ if (!(T)) \
+ (T) = thread_add_timer (master, (F), rinfo, (V)); \
+ } while (0)
+
+/* Macro for timer turn off. */
+#define RIP_TIMER_OFF(X) \
+ do { \
+ if (X) \
+ { \
+ thread_cancel (X); \
+ (X) = NULL; \
+ } \
+ } while (0)
+
+/* Prototypes. */
+void rip_init ();
+void rip_reset ();
+void rip_clean ();
+void rip_clean_network ();
+void rip_interface_clean ();
+void rip_interface_reset ();
+void rip_passive_interface_clean ();
+void rip_if_init ();
+void rip_if_down_all ();
+void rip_route_map_init ();
+void rip_route_map_reset ();
+void rip_snmp_init ();
+void rip_zclient_init ();
+void rip_zclient_start ();
+void rip_zclient_reset ();
+void rip_offset_init ();
+int if_check_address (struct in_addr addr);
+int if_valid_neighbor (struct in_addr addr);
+
+int rip_request_send (struct sockaddr_in *, struct interface *, u_char);
+int rip_neighbor_lookup (struct sockaddr_in *);
+void rip_redistribute_add (int, int, struct prefix_ipv4 *, unsigned int,
+ struct in_addr *);
+void rip_redistribute_delete (int, int, struct prefix_ipv4 *, unsigned int);
+void rip_redistribute_withdraw (int);
+void rip_zebra_ipv4_add (struct prefix_ipv4 *, struct in_addr *, u_int32_t, u_char);
+void rip_zebra_ipv4_delete (struct prefix_ipv4 *, struct in_addr *, u_int32_t);
+void rip_interface_multicast_set (int, struct interface *);
+void rip_distribute_update_interface (struct interface *);
+
+int config_write_rip_network (struct vty *, int);
+int config_write_rip_offset_list (struct vty *);
+int config_write_rip_redistribute (struct vty *, int);
+
+void rip_peer_init ();
+void rip_peer_update (struct sockaddr_in *, u_char);
+void rip_peer_bad_route (struct sockaddr_in *);
+void rip_peer_bad_packet (struct sockaddr_in *);
+void rip_peer_display (struct vty *);
+struct rip_peer *rip_peer_lookup (struct in_addr *);
+struct rip_peer *rip_peer_lookup_next (struct in_addr *);
+
+int rip_offset_list_apply_in (struct prefix_ipv4 *, struct interface *, u_int32_t *);
+int rip_offset_list_apply_out (struct prefix_ipv4 *, struct interface *, u_int32_t *);
+void rip_offset_clean ();
+
+void rip_info_free (struct rip_info *);
+u_char rip_distance_apply (struct rip_info *);
+void rip_redistribute_clean ();
+void rip_ifaddr_add (struct interface *, struct connected *);
+void rip_ifaddr_delete (struct interface *, struct connected *);
+
+/* There is only one rip strucutre. */
+extern struct rip *rip;
+
+/* Master thread strucutre. */
+extern struct thread_master *master;
+
+/* RIP statistics for SNMP. */
+extern long rip_global_route_changes;
+extern long rip_global_queries;
+
+#endif /* _ZEBRA_RIP_H */