Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 544 insertions, 0 deletions

diff --git a/ripd/ripd.h b/ripd/ripd.h
new file mode 100644
index 0000000..ac4a51f
--- /dev/null
+++ b/ripd/ripd.h
@@ -0,0 +1,544 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* RIP related values and structures.
+ * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
+ */
+
+#ifndef _ZEBRA_RIP_H
+#define _ZEBRA_RIP_H
+
+#include "hook.h"
+#include "nexthop.h"
+#include "distribute.h"
+#include "memory.h"
+#include "bfd.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"
+
+DECLARE_MGROUP(RIPD);
+
+/* RIP structure. */
+struct rip {
+	RB_ENTRY(rip) entry;
+
+	/* VRF this routing instance is associated with. */
+	char *vrf_name;
+
+	/* VRF backpointer (might be NULL if the VRF doesn't exist). */
+	struct vrf *vrf;
+
+	/* Status of the routing instance. */
+	bool enabled;
+
+	/* 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 static neighbors. */
+	struct route_table *neighbor;
+
+	/* Linked list of RIP peers. */
+	struct list *peer_list;
+
+	/* RIP threads. */
+	struct event *t_read;
+
+	/* Update and garbage timer. */
+	struct event *t_update;
+
+	/* Triggered update hack. */
+	int trigger;
+	struct event *t_triggered_update;
+	struct event *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 */
+	uint8_t ecmp;
+
+	/* Are we in passive-interface default mode? */
+	bool passive_default;
+
+	/* RIP enabled interfaces. */
+	vector enable_interface;
+
+	/* RIP enabled networks. */
+	struct route_table *enable_network;
+
+	/* Vector to store passive-interface name. */
+	vector passive_nondefault;
+
+	/* RIP offset-lists. */
+	struct list *offset_list_master;
+
+	/* RIP redistribute configuration. */
+	struct {
+		bool enabled;
+		struct {
+			char *name;
+			struct route_map *map;
+		} route_map;
+		bool metric_config;
+		uint8_t metric;
+	} redist[ZEBRA_ROUTE_MAX];
+
+	/* For distribute-list container */
+	struct distribute_ctx *distribute_ctx;
+
+	/* For if_rmap container */
+	struct if_rmap_ctx *if_rmap_ctx;
+
+	/* Counters for SNMP. */
+	struct {
+		/* RIP route changes. */
+		long route_changes;
+
+		/* RIP queries. */
+		long queries;
+	} counters;
+
+	/* Default BFD profile to use with BFD sessions. */
+	char *default_bfd_profile;
+};
+RB_HEAD(rip_instance_head, rip);
+RB_PROTOTYPE(rip_instance_head, rip, entry, rip_instance_compare)
+
+/* 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 event *t_timeout;
+	struct event *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;
+};
+
+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 {
+	/* Parent routing instance. */
+	struct rip *rip;
+
+	/* Interface data from zebra. */
+	struct interface *ifp;
+
+	/* 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 event *t_wakeup;
+
+	/* Interface statistics. */
+	int recv_badpackets;
+	int recv_badroutes;
+	int sent_updates;
+
+	/* Passive interface. */
+	int passive;
+
+	/* BFD information. */
+	struct {
+		bool enabled;
+		char *profile;
+	} bfd;
+};
+
+/* RIP peer information. */
+struct rip_peer {
+	/* Parent routing instance. */
+	struct rip *rip;
+
+	/* Back-pointer to RIP interface. */
+	struct rip_interface *ri;
+
+	/* 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 event *t_timeout;
+
+	/* BFD information */
+	struct bfd_session_params *bfd_session;
+};
+
+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) event_add_timer(master, (F), rinfo, (V), &(T))
+
+#define RIP_OFFSET_LIST_IN  0
+#define RIP_OFFSET_LIST_OUT 1
+#define RIP_OFFSET_LIST_MAX 2
+
+struct rip_offset_list {
+	/* Parent routing instance. */
+	struct rip *rip;
+
+	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(struct rip *rip);
+extern void rip_clean_network(struct rip *rip);
+extern void rip_interfaces_clean(struct rip *rip);
+extern int rip_passive_nondefault_set(struct rip *rip, const char *ifname);
+extern int rip_passive_nondefault_unset(struct rip *rip, const char *ifname);
+extern void rip_passive_nondefault_clean(struct rip *rip);
+extern void rip_if_init(void);
+extern void rip_route_map_init(void);
+extern void rip_zebra_vrf_register(struct vrf *vrf);
+extern void rip_zebra_vrf_deregister(struct vrf *vrf);
+extern void rip_zclient_init(struct event_loop *e);
+extern void rip_zclient_stop(void);
+extern int if_check_address(struct rip *rip, struct in_addr addr);
+extern struct rip *rip_lookup_by_vrf_id(vrf_id_t vrf_id);
+extern struct rip *rip_lookup_by_vrf_name(const char *vrf_name);
+extern struct rip *rip_create(const char *vrf_name, struct vrf *vrf,
+			      int socket);
+
+extern int rip_request_send(struct sockaddr_in *, struct interface *, uint8_t,
+			    struct connected *);
+extern int rip_neighbor_lookup(struct rip *rip, struct sockaddr_in *from);
+extern int rip_neighbor_add(struct rip *rip, struct prefix_ipv4 *p);
+extern int rip_neighbor_delete(struct rip *rip, struct prefix_ipv4 *p);
+
+extern int rip_enable_network_add(struct rip *rip, struct prefix *p);
+extern int rip_enable_network_delete(struct rip *rip, struct prefix *p);
+extern int rip_enable_if_add(struct rip *rip, const char *ifname);
+extern int rip_enable_if_delete(struct rip *rip, const char *ifname);
+
+extern void rip_event(struct rip *rip, enum rip_event event, int sock);
+extern void rip_ecmp_disable(struct rip *rip);
+
+extern int rip_create_socket(struct vrf *vrf);
+
+extern int rip_redistribute_check(struct rip *rip, int type);
+extern void rip_redistribute_conf_update(struct rip *rip, int type);
+extern void rip_redistribute_conf_delete(struct rip *rip, int type);
+extern void rip_redistribute_add(struct rip *rip, 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(struct rip *rip, int type, int sub_type,
+				    struct prefix_ipv4 *p, ifindex_t ifindex);
+extern void rip_redistribute_withdraw(struct rip *rip, int type);
+extern void rip_zebra_ipv4_add(struct rip *rip, struct route_node *rp);
+extern void rip_zebra_ipv4_delete(struct rip *rip, struct route_node *rp);
+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 *ifp);
+
+extern int rip_show_network_config(struct vty *vty, struct rip *rip);
+extern void rip_show_redistribute_config(struct vty *vty, struct rip *rip);
+
+extern void rip_peer_free(struct rip_peer *peer);
+extern void rip_peer_update(struct rip *rip, struct rip_interface *ri,
+			    struct sockaddr_in *from, uint8_t version);
+extern void rip_peer_bad_route(struct rip *rip, struct rip_interface *ri,
+			       struct sockaddr_in *from);
+extern void rip_peer_bad_packet(struct rip *rip, struct rip_interface *ri,
+				struct sockaddr_in *from);
+extern void rip_peer_display(struct vty *vty, struct rip *rip);
+extern struct rip_peer *rip_peer_lookup(struct rip *rip, struct in_addr *addr);
+extern struct rip_peer *rip_peer_lookup_next(struct rip *rip,
+					     struct in_addr *addr);
+extern int rip_peer_list_cmp(struct rip_peer *p1, struct rip_peer *p2);
+extern void rip_peer_list_del(void *arg);
+void rip_peer_delete_routes(const struct rip_peer *peer);
+
+extern void rip_info_free(struct rip_info *);
+extern struct rip *rip_info_get_instance(const struct rip_info *rinfo);
+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 *rip, struct rip_info *rinfo);
+extern void rip_redistribute_enable(struct rip *rip);
+extern void rip_redistribute_disable(struct rip *rip);
+
+extern int rip_route_rte(struct rip_info *rinfo);
+extern struct rip_info *rip_ecmp_add(struct rip *rip,
+				     struct rip_info *rinfo_new);
+extern struct rip_info *rip_ecmp_replace(struct rip *rip,
+					 struct rip_info *rinfo_new);
+extern struct rip_info *rip_ecmp_delete(struct rip *rip,
+					struct rip_info *rinfo);
+
+extern struct rip_offset_list *rip_offset_list_new(struct rip *rip,
+						   const char *ifname);
+extern void offset_list_del(struct rip_offset_list *offset);
+extern void offset_list_free(struct rip_offset_list *offset);
+extern struct rip_offset_list *rip_offset_list_lookup(struct rip *rip,
+						      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 int offset_list_cmp(struct rip_offset_list *o1,
+			   struct rip_offset_list *o2);
+
+extern void rip_vrf_init(void);
+extern void rip_vrf_terminate(void);
+extern void rip_cli_init(void);
+
+extern struct zebra_privs_t ripd_privs;
+extern struct rip_instance_head rip_instances;
+
+/* Master thread structure. */
+extern struct event_loop *master;
+
+DECLARE_HOOK(rip_ifaddr_add, (struct connected * ifc), (ifc));
+DECLARE_HOOK(rip_ifaddr_del, (struct connected * ifc), (ifc));
+
+extern void rip_ecmp_change(struct rip *rip);
+
+extern uint32_t zebra_ecmp_count;
+
+#endif /* _ZEBRA_RIP_H */