[mirror_frr.git] / ripd / ripd.h

/* 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 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 _ZEBRA_RIP_H
#define _ZEBRA_RIP_H

#include "hook.h"
#include "nexthop.h"
#include "distribute.h"
#include "rip_memory.h"

/* RIP version number. */
#define RIPv1                            1
#define RIPv2                            2
/* N.B. stuff will break if
	(RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_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   ((RIP_PACKET_MAXSIZ - RIP_HEADER_SIZE) / RIP_RTE_SIZE)

/* RIP version 2 multicast address. */
#ifndef INADDR_RIP_GROUP
#define INADDR_RIP_GROUP        0xe0000009    /* 224.0.0.9 */
#endif

/* RIP peer timeout value. */
#define RIP_PEER_TIMER_DEFAULT         180

/* RIP port number. */
#define RIP_PORT_DEFAULT               520
#define RIP_VTY_PORT                  2602

/* 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

/* RIPv2 special RTE family types */
#define RIP_FAMILY_AUTH                  0xffff

/* RIPv2 authentication types, for RIP_FAMILY_AUTH RTE's */
#define RIP_NO_AUTH                0
#define RIP_AUTH_DATA              1
#define RIP_AUTH_SIMPLE_PASSWORD   2
#define RIP_AUTH_MD5               3

/* RIPv2 Simple authentication */
#define RIP_AUTH_SIMPLE_SIZE		16

/* RIPv2 MD5 authentication. */
#define RIP_AUTH_MD5_SIZE               16
#define RIP_AUTH_MD5_COMPAT_SIZE        RIP_RTE_SIZE

/* YANG paths */
#define RIP_INSTANCE	"/frr-ripd:ripd/instance"
#define RIP_IFACE	"/frr-interface:lib/interface/frr-ripd:rip"

/* RIP structure. */
struct rip {
	/* RIP socket. */
	int sock;

	/* Default version of rip instance. */
	int version_send; /* version 1 or 2 (but not both) */
	int version_recv; /* version 1 or 2 or both */

	/* Output buffer of RIP. */
	struct stream *obuf;

	/* RIP routing information base. */
	struct route_table *table;

	/* 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. */
	uint32_t update_time;
	uint32_t timeout_time;
	uint32_t garbage_time;

	/* RIP default metric. */
	uint8_t default_metric;

	/* RIP default distance. */
	uint8_t distance;
	struct route_table *distance_table;

	/* RIP ECMP flag */
	bool ecmp;

	/* Are we in passive-interface default mode? */
	bool passive_default;

	/* For redistribute route map. */
	struct {
		char *name;
		struct route_map *map;
		bool metric_config;
		uint8_t metric;
	} route_map[ZEBRA_ROUTE_MAX];

	/* For distribute-list container */
	struct distribute_ctx *distribute_ctx;
};

/* RIP routing table entry which belong to rip_packet. */
struct rte {
	uint16_t family;	/* Address family of this route. */
	uint16_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. */
	uint32_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 nexthop nh;
	struct in_addr from;

	/* Metric of this route. */
	uint32_t metric;

	/* External metric of this route.
	   if learnt from an externalm proto */
	uint32_t external_metric;

	/* Tag information of this route. */
	uint16_t tag;

/* Flags of RIP route. */
#define RIP_RTF_FIB      1
#define RIP_RTF_CHANGED  2
	uint8_t 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;
	uint8_t metric_set;
	uint32_t metric_out;
	uint16_t tag_out;
	ifindex_t ifindex_out;

	struct route_node *rp;

	uint8_t distance;

#ifdef NEW_RIP_TABLE
	struct rip_info *next;
	struct rip_info *prev;
#endif /* NEW_RIP_TABLE */
};

typedef enum {
	RIP_NO_SPLIT_HORIZON = 0,
	RIP_SPLIT_HORIZON,
	RIP_SPLIT_HORIZON_POISONED_REVERSE
} split_horizon_policy_t;

/* 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 broadcast mode */
	bool v2_broadcast;

	/* RIPv2 authentication type. */
	int auth_type;

	/* RIPv2 authentication string. */
	char *auth_str;

	/* RIPv2 authentication key chain. */
	char *key_chain;

	/* value to use for md5->auth_len */
	int md5_auth_len;

	/* Split horizon flag. */
	split_horizon_policy_t split_horizon;

/* 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];

	/* Route-map. */
	struct route_map *routemap[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. */
	uint8_t version;

	/* Statistics. */
	int recv_badpackets;
	int recv_badroutes;

	/* Timeout thread. */
	struct thread *t_timeout;
};

struct rip_distance {
	/* Distance value for the IP source prefix. */
	uint8_t distance;

	/* Name of the access-list to be matched. */
	char *access_list;
};

struct rip_md5_info {
	uint16_t family;
	uint16_t type;
	uint16_t packet_len;
	uint8_t keyid;
	uint8_t auth_len;
	uint32_t sequence;
	uint32_t reserv1;
	uint32_t reserv2;
};

struct rip_md5_data {
	uint16_t family;
	uint16_t type;
	uint8_t 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
#define RI_RIP_VERSION_NONE                4
/* N.B. stuff will break if
	(RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */

/* 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) thread_add_timer (master, (F), rinfo, (V), &(T))

/* Macro for timer turn off. */
#define RIP_TIMER_OFF(X) THREAD_TIMER_OFF(X)

#define RIP_OFFSET_LIST_IN  0
#define RIP_OFFSET_LIST_OUT 1
#define RIP_OFFSET_LIST_MAX 2

struct rip_offset_list {
	char *ifname;

	struct {
		char *alist_name;
		/* struct access_list *alist; */
		uint8_t metric;
	} direct[RIP_OFFSET_LIST_MAX];
};

/* Prototypes. */
extern void rip_init(void);
extern void rip_clean(void);
extern void rip_clean_network(void);
extern void rip_interfaces_clean(void);
extern int rip_passive_nondefault_set(const char *ifname);
extern int rip_passive_nondefault_unset(const char *ifname);
extern void rip_passive_nondefault_clean(void);
extern void rip_if_init(void);
extern void rip_if_down_all(void);
extern void rip_route_map_init(void);
extern void rip_zclient_init(struct thread_master *);
extern void rip_zclient_stop(void);
extern int if_check_address(struct in_addr addr);
extern int rip_create(int socket);

extern int rip_request_send(struct sockaddr_in *, struct interface *, uint8_t,
			    struct connected *);
extern int rip_neighbor_lookup(struct sockaddr_in *);
extern int rip_neighbor_add(struct prefix_ipv4 *p);
extern int rip_neighbor_delete(struct prefix_ipv4 *p);

extern int rip_enable_network_add(struct prefix *p);
extern int rip_enable_network_delete(struct prefix *p);
extern int rip_enable_if_add(const char *ifname);
extern int rip_enable_if_delete(const char *ifname);

extern void rip_event(enum rip_event, int);
extern void rip_ecmp_disable(void);

extern int rip_create_socket(void);

extern int rip_redistribute_check(int);
extern void rip_redistribute_conf_update(int type);
extern void rip_redistribute_conf_delete(int type);
extern void rip_redistribute_add(int type, int sub_type, struct prefix_ipv4 *p,
				 struct nexthop *nh, unsigned int metric,
				 unsigned char distance, route_tag_t tag);
extern void rip_redistribute_delete(int, int, struct prefix_ipv4 *, ifindex_t);
extern void rip_redistribute_withdraw(int);
extern void rip_zebra_ipv4_add(struct route_node *);
extern void rip_zebra_ipv4_delete(struct route_node *);
extern void rip_interface_multicast_set(int, struct connected *);
extern void rip_distribute_update_interface(struct interface *);
extern void rip_if_rmap_update_interface(struct interface *);

extern int rip_show_network_config(struct vty *);
extern void rip_show_redistribute_config(struct vty *);

extern void rip_peer_init(void);
extern void rip_peer_update(struct sockaddr_in *, uint8_t);
extern void rip_peer_bad_route(struct sockaddr_in *);
extern void rip_peer_bad_packet(struct sockaddr_in *);
extern void rip_peer_display(struct vty *);
extern struct rip_peer *rip_peer_lookup(struct in_addr *);
extern struct rip_peer *rip_peer_lookup_next(struct in_addr *);

extern void rip_info_free(struct rip_info *);
extern struct rip_distance *rip_distance_new(void);
extern void rip_distance_free(struct rip_distance *rdistance);
extern uint8_t rip_distance_apply(struct rip_info *);
extern void rip_redistribute_clean(void);

extern int rip_route_rte(struct rip_info *rinfo);
extern struct rip_info *rip_ecmp_add(struct rip_info *);
extern struct rip_info *rip_ecmp_replace(struct rip_info *);
extern struct rip_info *rip_ecmp_delete(struct rip_info *);

extern struct rip_offset_list *rip_offset_list_new(const char *ifname);
extern void offset_list_del(struct rip_offset_list *offset);
extern struct rip_offset_list *rip_offset_list_lookup(const char *ifname);
extern int rip_offset_list_apply_in(struct prefix_ipv4 *, struct interface *,
				    uint32_t *);
extern int rip_offset_list_apply_out(struct prefix_ipv4 *, struct interface *,
				     uint32_t *);
extern void rip_offset_init(void);
extern void rip_offset_clean(void);

/* YANG notifications */
extern void ripd_notif_send_auth_type_failure(const char *ifname);
extern void ripd_notif_send_auth_failure(const char *ifname);

/* There is only one rip strucutre. */
extern struct rip *rip;

extern struct zebra_privs_t ripd_privs;

/* Master thread strucutre. */
extern struct thread_master *master;

/* RIP statistics for SNMP. */
extern long rip_global_route_changes;
extern long rip_global_queries;

DECLARE_HOOK(rip_ifaddr_add, (struct connected * ifc), (ifc))
DECLARE_HOOK(rip_ifaddr_del, (struct connected * ifc), (ifc))

extern struct list *peer_list;
extern struct route_table *rip_distance_table;
extern vector Vrip_passive_nondefault;

/* Northbound. */
extern void rip_cli_init(void);
extern const struct frr_yang_module_info frr_ripd_info;

#endif /* _ZEBRA_RIP_H */
Commit	Line	Data
718e3744	1	/* RIP related values and structures.
	2	* Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
	3	*
	4	* This file is part of GNU Zebra.
	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
896014f4 DL	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
718e3744	19	*/
	20
	21	#ifndef _ZEBRA_RIP_H
	22	#define _ZEBRA_RIP_H
	23
3012671f	24	#include "hook.h"
dd127197	25	#include "nexthop.h"
03a38493	26	#include "distribute.h"
4a1ab8e4 DL	27	#include "rip_memory.h"
4a1ab8e4 DL	28
718e3744	29	/* RIP version number. */
	30	#define RIPv1 1
	31	#define RIPv2 2
f38a471c	32	/* N.B. stuff will break if
	33	(RIPv1 != RI_RIP_VERSION_1) \|\| (RIPv2 != RI_RIP_VERSION_2) */
	34
718e3744	35
	36	/* RIP command list. */
	37	#define RIP_REQUEST 1
	38	#define RIP_RESPONSE 2
	39	#define RIP_TRACEON 3 /* Obsolete */
	40	#define RIP_TRACEOFF 4 /* Obsolete */
	41	#define RIP_POLL 5
	42	#define RIP_POLL_ENTRY 6
	43	#define RIP_COMMAND_MAX 7
	44
	45	/* RIP metric infinity value.*/
	46	#define RIP_METRIC_INFINITY 16
	47
	48	/* Normal RIP packet min and max size. */
	49	#define RIP_PACKET_MINSIZ 4
	50	#define RIP_PACKET_MAXSIZ 512
	51
	52	#define RIP_HEADER_SIZE 4
	53	#define RIP_RTE_SIZE 20
	54
	55	/* Max count of routing table entry in one rip packet. */
6a7cff75	56	#define RIP_MAX_RTE ((RIP_PACKET_MAXSIZ - RIP_HEADER_SIZE) / RIP_RTE_SIZE)
718e3744	57
	58	/* RIP version 2 multicast address. */
	59	#ifndef INADDR_RIP_GROUP
	60	#define INADDR_RIP_GROUP 0xe0000009 /* 224.0.0.9 */
	61	#endif
	62
718e3744	63	/* RIP peer timeout value. */
	64	#define RIP_PEER_TIMER_DEFAULT 180
	65
	66	/* RIP port number. */
	67	#define RIP_PORT_DEFAULT 520
	68	#define RIP_VTY_PORT 2602
718e3744	69
	70	/* Default configuration file name. */
	71	#define RIPD_DEFAULT_CONFIG "ripd.conf"
	72
	73	/* RIP route types. */
	74	#define RIP_ROUTE_RTE 0
	75	#define RIP_ROUTE_STATIC 1
	76	#define RIP_ROUTE_DEFAULT 2
	77	#define RIP_ROUTE_REDISTRIBUTE 3
	78	#define RIP_ROUTE_INTERFACE 4
	79
ca5e516c	80	/* RIPv2 special RTE family types */
	81	#define RIP_FAMILY_AUTH 0xffff
	82
	83	/* RIPv2 authentication types, for RIP_FAMILY_AUTH RTE's */
	84	#define RIP_NO_AUTH 0
	85	#define RIP_AUTH_DATA 1
	86	#define RIP_AUTH_SIMPLE_PASSWORD 2
	87	#define RIP_AUTH_MD5 3
	88
b14ee00b	89	/* RIPv2 Simple authentication */
	90	#define RIP_AUTH_SIMPLE_SIZE 16
	91
ca5e516c	92	/* RIPv2 MD5 authentication. */
718e3744	93	#define RIP_AUTH_MD5_SIZE 16
ca5e516c	94	#define RIP_AUTH_MD5_COMPAT_SIZE RIP_RTE_SIZE
718e3744	95
707656ec RW	96	/* YANG paths */
	97	#define RIP_INSTANCE "/frr-ripd:ripd/instance"
	98	#define RIP_IFACE "/frr-interface:lib/interface/frr-ripd:rip"
	99
718e3744	100	/* RIP structure. */
d62a17ae	101	struct rip {
	102	/* RIP socket. */
	103	int sock;
	104
	105	/* Default version of rip instance. */
	106	int version_send; /* version 1 or 2 (but not both) */
	107	int version_recv; /* version 1 or 2 or both */
	108
	109	/* Output buffer of RIP. */
	110	struct stream *obuf;
	111
	112	/* RIP routing information base. */
	113	struct route_table *table;
	114
d62a17ae	115	/* RIP neighbor. */
	116	struct route_table *neighbor;
	117
	118	/* RIP threads. */
	119	struct thread *t_read;
	120
	121	/* Update and garbage timer. */
	122	struct thread *t_update;
	123
	124	/* Triggered update hack. */
	125	int trigger;
	126	struct thread *t_triggered_update;
	127	struct thread *t_triggered_interval;
	128
	129	/* RIP timer values. */
b745780b RW	130	uint32_t update_time;
	131	uint32_t timeout_time;
	132	uint32_t garbage_time;
d62a17ae	133
d62a17ae	134	/* RIP default metric. */
282ae30c	135	uint8_t default_metric;
d62a17ae	136
d62a17ae	137	/* RIP default distance. */
d7c0a89a	138	uint8_t distance;
d62a17ae	139	struct route_table *distance_table;
	140
	141	/* RIP ECMP flag */
edbf59d2	142	bool ecmp;
d62a17ae	143
44f2f852 RW	144	/* Are we in passive-interface default mode? */
	145	bool passive_default;
	146
d62a17ae	147	/* For redistribute route map. */
	148	struct {
	149	char *name;
	150	struct route_map *map;
908f0020 RW	151	bool metric_config;
908f0020 RW	152	uint8_t metric;
d62a17ae	153	} route_map[ZEBRA_ROUTE_MAX];
03a38493 PG	154
	155	/* For distribute-list container */
	156	struct distribute_ctx *distribute_ctx;
718e3744	157	};
	158
	159	/* RIP routing table entry which belong to rip_packet. */
d62a17ae	160	struct rte {
d7c0a89a QY	161	uint16_t family; /* Address family of this route. */
d7c0a89a QY	162	uint16_t tag; /* Route Tag which included in RIP2 packet. */
d62a17ae	163	struct in_addr prefix; /* Prefix of rip route. */
	164	struct in_addr mask; /* Netmask of rip route. */
	165	struct in_addr nexthop; /* Next hop of rip route. */
d7c0a89a	166	uint32_t metric; /* Metric value of rip route. */
718e3744	167	};
	168
	169	/* RIP packet structure. */
d62a17ae	170	struct rip_packet {
	171	unsigned char command; /* Command type of RIP packet. */
	172	unsigned char version; /* RIP version which coming from peer. */
	173	unsigned char pad1; /* Padding of RIP packet header. */
	174	unsigned char pad2; /* Same as above. */
	175	struct rte rte[1]; /* Address structure. */
718e3744	176	};
	177
	178	/* Buffer to read RIP packet. */
d62a17ae	179	union rip_buf {
	180	struct rip_packet rip_packet;
	181	char buf[RIP_PACKET_MAXSIZ];
718e3744	182	};
	183
	184	/* RIP route information. */
d62a17ae	185	struct rip_info {
	186	/* This route's type. */
	187	int type;
718e3744	188
d62a17ae	189	/* Sub type. */
d62a17ae	190	int sub_type;
718e3744	191
d62a17ae	192	/* RIP nexthop. */
dd127197	193	struct nexthop nh;
d62a17ae	194	struct in_addr from;
718e3744	195
d62a17ae	196	/* Metric of this route. */
d7c0a89a	197	uint32_t metric;
718e3744	198
d62a17ae	199	/* External metric of this route.
d62a17ae	200	if learnt from an externalm proto */
d7c0a89a	201	uint32_t external_metric;
fbf5d033	202
d62a17ae	203	/* Tag information of this route. */
d7c0a89a	204	uint16_t tag;
718e3744	205
d62a17ae	206	/* Flags of RIP route. */
718e3744	207	#define RIP_RTF_FIB 1
718e3744	208	#define RIP_RTF_CHANGED 2
d7c0a89a	209	uint8_t flags;
718e3744	210
d62a17ae	211	/* Garbage collect timer. */
	212	struct thread *t_timeout;
	213	struct thread *t_garbage_collect;
718e3744	214
d62a17ae	215	/* Route-map futures - this variables can be changed. */
d62a17ae	216	struct in_addr nexthop_out;
d7c0a89a QY	217	uint8_t metric_set;
	218	uint32_t metric_out;
	219	uint16_t tag_out;
d62a17ae	220	ifindex_t ifindex_out;
718e3744	221
d62a17ae	222	struct route_node *rp;
718e3744	223
d7c0a89a	224	uint8_t distance;
718e3744	225
718e3744	226	#ifdef NEW_RIP_TABLE
d62a17ae	227	struct rip_info *next;
d62a17ae	228	struct rip_info *prev;
718e3744	229	#endif /* NEW_RIP_TABLE */
	230	};
	231
16705130	232	typedef enum {
d62a17ae	233	RIP_NO_SPLIT_HORIZON = 0,
	234	RIP_SPLIT_HORIZON,
	235	RIP_SPLIT_HORIZON_POISONED_REVERSE
16705130	236	} split_horizon_policy_t;
16705130	237
718e3744	238	/* RIP specific interface configuration. */
d62a17ae	239	struct rip_interface {
	240	/* RIP is enabled on this interface. */
	241	int enable_network;
	242	int enable_interface;
718e3744	243
d62a17ae	244	/* RIP is running on this interface. */
d62a17ae	245	int running;
718e3744	246
d62a17ae	247	/* RIP version control. */
	248	int ri_send;
	249	int ri_receive;
718e3744	250
d62a17ae	251	/* RIPv2 broadcast mode */
94b117b2	252	bool v2_broadcast;
f90310cf	253
d62a17ae	254	/* RIPv2 authentication type. */
d62a17ae	255	int auth_type;
718e3744	256
d62a17ae	257	/* RIPv2 authentication string. */
d62a17ae	258	char *auth_str;
718e3744	259
d62a17ae	260	/* RIPv2 authentication key chain. */
d62a17ae	261	char *key_chain;
718e3744	262
d62a17ae	263	/* value to use for md5->auth_len */
94b117b2	264	int md5_auth_len;
ca5e516c	265
d62a17ae	266	/* Split horizon flag. */
d62a17ae	267	split_horizon_policy_t split_horizon;
718e3744	268
d62a17ae	269	/* For filter type slot. */
718e3744	270	#define RIP_FILTER_IN 0
	271	#define RIP_FILTER_OUT 1
	272	#define RIP_FILTER_MAX 2
	273
d62a17ae	274	/* Access-list. */
d62a17ae	275	struct access_list *list[RIP_FILTER_MAX];
718e3744	276
d62a17ae	277	/* Prefix-list. */
d62a17ae	278	struct prefix_list *prefix[RIP_FILTER_MAX];
718e3744	279
d62a17ae	280	/* Route-map. */
d62a17ae	281	struct route_map *routemap[RIP_FILTER_MAX];
16705130	282
d62a17ae	283	/* Wake up thread. */
d62a17ae	284	struct thread *t_wakeup;
718e3744	285
d62a17ae	286	/* Interface statistics. */
	287	int recv_badpackets;
	288	int recv_badroutes;
	289	int sent_updates;
718e3744	290
d62a17ae	291	/* Passive interface. */
d62a17ae	292	int passive;
718e3744	293	};
	294
	295	/* RIP peer information. */
d62a17ae	296	struct rip_peer {
	297	/* Peer address. */
	298	struct in_addr addr;
718e3744	299
d62a17ae	300	/* Peer RIP tag value. */
d62a17ae	301	int domain;
718e3744	302
d62a17ae	303	/* Last update time. */
d62a17ae	304	time_t uptime;
718e3744	305
d62a17ae	306	/* Peer RIP version. */
d7c0a89a	307	uint8_t version;
718e3744	308
d62a17ae	309	/* Statistics. */
	310	int recv_badpackets;
	311	int recv_badroutes;
718e3744	312
d62a17ae	313	/* Timeout thread. */
d62a17ae	314	struct thread *t_timeout;
718e3744	315	};
718e3744	316
23b23d8c RW	317	struct rip_distance {
	318	/* Distance value for the IP source prefix. */
	319	uint8_t distance;
	320
	321	/* Name of the access-list to be matched. */
	322	char *access_list;
	323	};
	324
d62a17ae	325	struct rip_md5_info {
d7c0a89a QY	326	uint16_t family;
	327	uint16_t type;
	328	uint16_t packet_len;
	329	uint8_t keyid;
	330	uint8_t auth_len;
	331	uint32_t sequence;
	332	uint32_t reserv1;
	333	uint32_t reserv2;
718e3744	334	};
718e3744	335
d62a17ae	336	struct rip_md5_data {
d7c0a89a QY	337	uint16_t family;
	338	uint16_t type;
	339	uint8_t digest[16];
718e3744	340	};
	341
	342	/* RIP accepet/announce methods. */
	343	#define RI_RIP_UNSPEC 0
	344	#define RI_RIP_VERSION_1 1
	345	#define RI_RIP_VERSION_2 2
	346	#define RI_RIP_VERSION_1_AND_2 3
6aec4b41	347	#define RI_RIP_VERSION_NONE 4
f38a471c	348	/* N.B. stuff will break if
f38a471c	349	(RIPv1 != RI_RIP_VERSION_1) \|\| (RIPv2 != RI_RIP_VERSION_2) */
718e3744	350
718e3744	351	/* RIP event. */
d62a17ae	352	enum rip_event {
	353	RIP_READ,
	354	RIP_UPDATE_EVENT,
	355	RIP_TRIGGERED_UPDATE,
718e3744	356	};
	357
	358	/* Macro for timer turn on. */
ffa2c898	359	#define RIP_TIMER_ON(T,F,V) thread_add_timer (master, (F), rinfo, (V), &(T))
718e3744	360
718e3744	361	/* Macro for timer turn off. */
8578874d	362	#define RIP_TIMER_OFF(X) THREAD_TIMER_OFF(X)
718e3744	363
8c942f65 RW	364	#define RIP_OFFSET_LIST_IN 0
	365	#define RIP_OFFSET_LIST_OUT 1
	366	#define RIP_OFFSET_LIST_MAX 2
	367
	368	struct rip_offset_list {
	369	char *ifname;
	370
	371	struct {
	372	char *alist_name;
	373	/* struct access_list alist; /
	374	uint8_t metric;
	375	} direct[RIP_OFFSET_LIST_MAX];
	376	};
	377
718e3744	378	/* Prototypes. */
d62a17ae	379	extern void rip_init(void);
d62a17ae	380	extern void rip_clean(void);
	381	extern void rip_clean_network(void);
	382	extern void rip_interfaces_clean(void);
44f2f852 RW	383	extern int rip_passive_nondefault_set(const char *ifname);
44f2f852 RW	384	extern int rip_passive_nondefault_unset(const char *ifname);
d62a17ae	385	extern void rip_passive_nondefault_clean(void);
	386	extern void rip_if_init(void);
	387	extern void rip_if_down_all(void);
	388	extern void rip_route_map_init(void);
4140ca4d	389	extern void rip_zclient_init(struct thread_master *);
a2f9eb82	390	extern void rip_zclient_stop(void);
d62a17ae	391	extern int if_check_address(struct in_addr addr);
8c9226c2	392	extern int rip_create(int socket);
d62a17ae	393
d7c0a89a	394	extern int rip_request_send(struct sockaddr_in , struct interface , uint8_t,
d62a17ae	395	struct connected *);
d62a17ae	396	extern int rip_neighbor_lookup(struct sockaddr_in *);
f0ab22fb RW	397	extern int rip_neighbor_add(struct prefix_ipv4 *p);
f0ab22fb RW	398	extern int rip_neighbor_delete(struct prefix_ipv4 *p);
d62a17ae	399
3d7a1be8 RW	400	extern int rip_enable_network_add(struct prefix *p);
	401	extern int rip_enable_network_delete(struct prefix *p);
	402	extern int rip_enable_if_add(const char *ifname);
	403	extern int rip_enable_if_delete(const char *ifname);
	404
b745780b	405	extern void rip_event(enum rip_event, int);
edbf59d2 RW	406	extern void rip_ecmp_disable(void);
edbf59d2 RW	407
8c9226c2 RW	408	extern int rip_create_socket(void);
8c9226c2 RW	409
d62a17ae	410	extern int rip_redistribute_check(int);
908f0020 RW	411	extern void rip_redistribute_conf_update(int type);
908f0020 RW	412	extern void rip_redistribute_conf_delete(int type);
996c9314 LB	413	extern void rip_redistribute_add(int type, int sub_type, struct prefix_ipv4 *p,
	414	struct nexthop *nh, unsigned int metric,
	415	unsigned char distance, route_tag_t tag);
d62a17ae	416	extern void rip_redistribute_delete(int, int, struct prefix_ipv4 *, ifindex_t);
	417	extern void rip_redistribute_withdraw(int);
	418	extern void rip_zebra_ipv4_add(struct route_node *);
	419	extern void rip_zebra_ipv4_delete(struct route_node *);
	420	extern void rip_interface_multicast_set(int, struct connected *);
	421	extern void rip_distribute_update_interface(struct interface *);
	422	extern void rip_if_rmap_update_interface(struct interface *);
	423
44f2f852	424	extern int rip_show_network_config(struct vty *);
908f0020	425	extern void rip_show_redistribute_config(struct vty *);
d62a17ae	426
d62a17ae	427	extern void rip_peer_init(void);
d7c0a89a	428	extern void rip_peer_update(struct sockaddr_in *, uint8_t);
d62a17ae	429	extern void rip_peer_bad_route(struct sockaddr_in *);
	430	extern void rip_peer_bad_packet(struct sockaddr_in *);
	431	extern void rip_peer_display(struct vty *);
	432	extern struct rip_peer rip_peer_lookup(struct in_addr );
	433	extern struct rip_peer rip_peer_lookup_next(struct in_addr );
	434
d62a17ae	435	extern void rip_info_free(struct rip_info *);
23b23d8c RW	436	extern struct rip_distance *rip_distance_new(void);
23b23d8c RW	437	extern void rip_distance_free(struct rip_distance *rdistance);
d7c0a89a	438	extern uint8_t rip_distance_apply(struct rip_info *);
d62a17ae	439	extern void rip_redistribute_clean(void);
d62a17ae	440
1137aef4	441	extern int rip_route_rte(struct rip_info *rinfo);
d62a17ae	442	extern struct rip_info rip_ecmp_add(struct rip_info );
	443	extern struct rip_info rip_ecmp_replace(struct rip_info );
	444	extern struct rip_info rip_ecmp_delete(struct rip_info );
bce8e868	445
8c942f65 RW	446	extern struct rip_offset_list rip_offset_list_new(const char ifname);
	447	extern void offset_list_del(struct rip_offset_list *offset);
	448	extern struct rip_offset_list rip_offset_list_lookup(const char ifname);
	449	extern int rip_offset_list_apply_in(struct prefix_ipv4 , struct interface ,
	450	uint32_t *);
	451	extern int rip_offset_list_apply_out(struct prefix_ipv4 , struct interface ,
	452	uint32_t *);
	453	extern void rip_offset_init(void);
	454	extern void rip_offset_clean(void);
	455
fe339c95 RW	456	/* YANG notifications */
	457	extern void ripd_notif_send_auth_type_failure(const char *ifname);
	458	extern void ripd_notif_send_auth_failure(const char *ifname);
	459
718e3744	460	/* There is only one rip strucutre. */
	461	extern struct rip *rip;
	462
32b5a493 DS	463	extern struct zebra_privs_t ripd_privs;
32b5a493 DS	464
718e3744	465	/* Master thread strucutre. */
	466	extern struct thread_master *master;
	467
	468	/* RIP statistics for SNMP. */
	469	extern long rip_global_route_changes;
	470	extern long rip_global_queries;
3012671f	471
d62a17ae	472	DECLARE_HOOK(rip_ifaddr_add, (struct connected * ifc), (ifc))
d62a17ae	473	DECLARE_HOOK(rip_ifaddr_del, (struct connected * ifc), (ifc))
3012671f	474
5c1a8497	475	extern struct list *peer_list;
23b23d8c	476	extern struct route_table *rip_distance_table;
44f2f852	477	extern vector Vrip_passive_nondefault;
23b23d8c	478
707656ec RW	479	/* Northbound. */
	480	extern void rip_cli_init(void);
	481	extern const struct frr_yang_module_info frr_ripd_info;
	482
718e3744	483	#endif /* _ZEBRA_RIP_H */