Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
+#ifndef _QUAGGA_BGP_ROUTE_H
+#define _QUAGGA_BGP_ROUTE_H
+
+#include "lib/json.h"
+#include "queue.h"
+#include "bgp_table.h"
+
+struct bgp_nexthop_cache;
+
+#define BGP_SHOW_SCODE_HEADER "Status codes: s suppressed, d damped, "\
+ "h history, * valid, > best, = multipath,%s"\
+ " i internal, r RIB-failure, S Stale, R Removed%s"
+#define BGP_SHOW_OCODE_HEADER "Origin codes: i - IGP, e - EGP, ? - incomplete%s%s"
+#define BGP_SHOW_HEADER " Network Next Hop Metric LocPrf Weight Path%s"
+
+/* Ancillary information to struct bgp_info,
+ * used for uncommonly used data (aggregation, MPLS, etc.)
+ * and lazily allocated to save memory.
+ */
+struct bgp_info_extra
+{
+ /* Pointer to dampening structure. */
+ struct bgp_damp_info *damp_info;
+
+ /* This route is suppressed with aggregation. */
+ int suppress;
+
+ /* Nexthop reachability check. */
+ u_int32_t igpmetric;
+
+ /* MPLS label. */
+ u_char tag[3];
+};
+
struct bgp_info
{
/* For linked list. */
struct bgp_info *next;
struct bgp_info *prev;
- /* BGP route type. This can be static, RIP, OSPF, BGP etc. */
- u_char type;
+ /* For nexthop linked list */
+ LIST_ENTRY(bgp_info) nh_thread;
- /* When above type is BGP. This sub type specify BGP sub type
- information. */
- u_char sub_type;
-#define BGP_ROUTE_NORMAL 0
-#define BGP_ROUTE_STATIC 1
-#define BGP_ROUTE_AGGREGATE 2
-#define BGP_ROUTE_REDISTRIBUTE 3
+ /* Back pointer to the prefix node */
+ struct bgp_node *net;
+
+ /* Back pointer to the nexthop structure */
+ struct bgp_nexthop_cache *nexthop;
+
+ /* Peer structure. */
+ struct peer *peer;
+ /* Attribute structure. */
+ struct attr *attr;
+
+ /* Extra information */
+ struct bgp_info_extra *extra;
+
+
+ /* Multipath information */
+ struct bgp_info_mpath *mpath;
+
+ /* Uptime. */
+ time_t uptime;
+
+ /* reference count */
+ int lock;
+
/* BGP information status. */
- u_char flags;
+ u_int16_t flags;
#define BGP_INFO_IGP_CHANGED (1 << 0)
#define BGP_INFO_DAMPED (1 << 1)
#define BGP_INFO_HISTORY (1 << 2)
#define BGP_INFO_ATTR_CHANGED (1 << 5)
#define BGP_INFO_DMED_CHECK (1 << 6)
#define BGP_INFO_DMED_SELECTED (1 << 7)
+#define BGP_INFO_STALE (1 << 8)
+#define BGP_INFO_REMOVED (1 << 9)
+#define BGP_INFO_COUNTED (1 << 10)
+#define BGP_INFO_MULTIPATH (1 << 11)
+#define BGP_INFO_MULTIPATH_CHG (1 << 12)
- /* Peer structure. */
- struct peer *peer;
-
- /* Attribute structure. */
- struct attr *attr;
+ /* BGP route type. This can be static, RIP, OSPF, BGP etc. */
+ u_char type;
- /* This route is suppressed with aggregation. */
- int suppress;
-
- /* Nexthop reachability check. */
- u_int32_t igpmetric;
+ /* When above type is BGP. This sub type specify BGP sub type
+ information. */
+ u_char sub_type;
+#define BGP_ROUTE_NORMAL 0
+#define BGP_ROUTE_STATIC 1
+#define BGP_ROUTE_AGGREGATE 2
+#define BGP_ROUTE_REDISTRIBUTE 3
- /* Uptime. */
- time_t uptime;
+ u_short instance;
- /* Pointer to dampening structure. */
- struct bgp_damp_info *damp_info;
+ /* Addpath identifiers */
+ u_int32_t addpath_rx_id;
+ u_int32_t addpath_tx_id;
- /* MPLS label. */
- u_char tag[3];
};
/* BGP static route configuration. */
/* IGP nexthop. */
struct in_addr igpnexthop;
+ /* Atomic set reference count (ie cause of pathlimit) */
+ u_int32_t atomic;
+
/* BGP redistribute route-map. */
struct
{
u_char tag[3];
};
+#define BGP_ATTR_NEXTHOP_AFI_IP6(attr) \
+ (! CHECK_FLAG (attr->flag, ATTR_FLAG_BIT (BGP_ATTR_NEXT_HOP)) && \
+ (attr)->extra && ((attr)->extra->mp_nexthop_len == 16 || \
+ (attr)->extra->mp_nexthop_len == 32))
+#define BGP_INFO_COUNTABLE(BI) \
+ (! CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \
+ && ! CHECK_FLAG ((BI)->flags, BGP_INFO_REMOVED))
+
+/* Flags which indicate a route is unuseable in some form */
+#define BGP_INFO_UNUSEABLE \
+ (BGP_INFO_HISTORY|BGP_INFO_DAMPED|BGP_INFO_REMOVED)
+/* Macro to check BGP information is alive or not. Sadly,
+ * not equivalent to just checking previous, because of the
+ * sense of the additional VALID flag.
+ */
+#define BGP_INFO_HOLDDOWN(BI) \
+ (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
+ || CHECK_FLAG ((BI)->flags, BGP_INFO_UNUSEABLE))
+
#define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name)
#define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist)
#define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name)
#define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
#define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist)
-#define ROUTE_MAP_IN_NAME(F) ((F)->map[FILTER_IN].name)
-#define ROUTE_MAP_IN(F) ((F)->map[FILTER_IN].map)
-#define ROUTE_MAP_OUT_NAME(F) ((F)->map[FILTER_OUT].name)
-#define ROUTE_MAP_OUT(F) ((F)->map[FILTER_OUT].map)
+#define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name)
+#define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map)
+#define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name)
+#define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map)
+
+#define ROUTE_MAP_IMPORT_NAME(F) ((F)->map[RMAP_IMPORT].name)
+#define ROUTE_MAP_IMPORT(F) ((F)->map[RMAP_IMPORT].map)
+#define ROUTE_MAP_EXPORT_NAME(F) ((F)->map[RMAP_EXPORT].name)
+#define ROUTE_MAP_EXPORT(F) ((F)->map[RMAP_EXPORT].map)
#define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name)
#define UNSUPPRESS_MAP(F) ((F)->usmap.map)
+enum bgp_clear_route_type
+{
+ BGP_CLEAR_ROUTE_NORMAL,
+ BGP_CLEAR_ROUTE_MY_RSCLIENT
+};
+
+enum bgp_path_type
+{
+ BGP_PATH_ALL,
+ BGP_PATH_BESTPATH,
+ BGP_PATH_MULTIPATH
+};
+
+static inline void
+bgp_bump_version (struct bgp_node *node)
+{
+ node->version = bgp_table_next_version(bgp_node_table(node));
+}
+
/* Prototypes. */
-void bgp_route_init ();
-void bgp_cleanup_routes (void);
-void bgp_announce_route (struct peer *, afi_t, safi_t);
-void bgp_announce_route_all (struct peer *);
-void bgp_default_originate (struct peer *, afi_t, safi_t, int);
-void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
-void bgp_clear_route (struct peer *, afi_t, safi_t);
-void bgp_clear_route_all (struct peer *);
-void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
-
-int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t);
-int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
-
-int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
-
-void bgp_redistribute_add (struct prefix *, struct in_addr *, u_int32_t, u_char);
-void bgp_redistribute_delete (struct prefix *, u_char);
-void bgp_redistribute_withdraw (struct bgp *, afi_t, int);
-
-void bgp_static_delete (struct bgp *);
-void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
+extern void bgp_process_queue_init (void);
+extern void bgp_route_init (void);
+extern void bgp_route_finish (void);
+extern void bgp_cleanup_routes (void);
+extern void bgp_announce_route (struct peer *, afi_t, safi_t);
+extern void bgp_stop_announce_route_timer(struct peer_af *paf);
+extern void bgp_announce_route_all (struct peer *);
+extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
+extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
+extern void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t);
+extern void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi);
+extern void bgp_clear_route (struct peer *, afi_t, safi_t,
+ enum bgp_clear_route_type);
+extern void bgp_clear_route_all (struct peer *);
+extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
+extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
+
+extern struct bgp_node *bgp_afi_node_get (struct bgp_table *table, afi_t afi,
+ safi_t safi, struct prefix *p,
+ struct prefix_rd *prd);
+extern struct bgp_info *bgp_info_lock (struct bgp_info *);
+extern struct bgp_info *bgp_info_unlock (struct bgp_info *);
+extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri);
+extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri);
+extern struct bgp_info_extra *bgp_info_extra_get (struct bgp_info *);
+extern void bgp_info_set_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
+extern void bgp_info_unset_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
+
+extern int bgp_nlri_sanity_check (struct peer *, int, safi_t, u_char *, bgp_size_t, int *);
+extern int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
+
+extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
+
+extern void bgp_redistribute_add (struct prefix *, const struct in_addr *,
+ const struct in6_addr *, unsigned int ifindex,
+ u_int32_t, u_char, u_short, u_short);
+extern void bgp_redistribute_delete (struct prefix *, u_char, u_short);
+extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int, u_short);
+
+extern void bgp_static_delete (struct bgp *);
+extern void bgp_static_redo_import_check (struct bgp *);
+extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
afi_t, safi_t);
-void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
+extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
-int bgp_static_set_vpnv4 (struct vty *vty, char *, char *, char *);
+extern int bgp_static_set_vpnv4 (struct vty *vty, const char *,
+ const char *, const char *);
+
+extern int bgp_static_unset_vpnv4 (struct vty *, const char *,
+ const char *, const char *);
+
+/* this is primarily for MPLS-VPN */
+extern int bgp_update (struct peer *, struct prefix *, u_int32_t, struct attr *,
+ afi_t, safi_t, int, int, struct prefix_rd *,
+ u_char *, int);
+extern int bgp_withdraw (struct peer *, struct prefix *, u_int32_t, struct attr *,
+ afi_t, safi_t, int, int, struct prefix_rd *, u_char *);
+
+/* for bgp_nexthop and bgp_damp */
+extern void bgp_process (struct bgp *, struct bgp_node *, afi_t, safi_t);
+
+/*
+ * Add an end-of-initial-update marker to the process queue. This is just a
+ * queue element with NULL bgp node.
+ */
+extern void bgp_add_eoiu_mark (struct bgp *, bgp_table_t);
+extern int bgp_config_write_table_map (struct vty *, struct bgp *, afi_t, safi_t,
+ int *);
+extern int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
+extern int bgp_config_write_distance (struct vty *, struct bgp *);
+
+extern void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
+ afi_t, safi_t);
+extern void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
+ afi_t, safi_t);
-int bgp_static_unset_vpnv4 (struct vty *, char *, char *, char *);
+extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
-int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
-int bgp_config_write_distance (struct vty *, struct bgp *);
+extern afi_t bgp_node_afi (struct vty *);
+extern safi_t bgp_node_safi (struct vty *);
-void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
- afi_t, safi_t);
-void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
- afi_t, safi_t);
+extern void route_vty_out (struct vty *, struct prefix *, struct bgp_info *, int, safi_t, json_object *);
+extern void route_vty_out_tag (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
+extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t);
+
+extern int
+subgroup_process_announce_selected (struct update_subgroup *subgrp,
+ struct bgp_info *selected,
+ struct bgp_node *rn);
-u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
+extern int subgroup_announce_check(struct bgp_info *ri,
+ struct update_subgroup *subgrp,
+ struct prefix *p, struct attr *attr);
-afi_t bgp_node_afi (struct vty *);
-safi_t bgp_node_safi (struct vty *);
+#endif /* _QUAGGA_BGP_ROUTE_H */
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