[mirror_frr.git] / bgpd / bgp_route.h

/* BGP routing information base
 * Copyright (C) 1996, 97, 98, 2000 Kunihiro Ishiguro
 *
 * 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 _QUAGGA_BGP_ROUTE_H
#define _QUAGGA_BGP_ROUTE_H

#include "queue.h"
#include "bgp_table.h"

struct bgp_nexthop_cache;
struct bgp_route_evpn;

enum bgp_show_type
{
  bgp_show_type_normal,
  bgp_show_type_regexp,
  bgp_show_type_prefix_list,
  bgp_show_type_filter_list,
  bgp_show_type_route_map,
  bgp_show_type_neighbor,
  bgp_show_type_cidr_only,
  bgp_show_type_prefix_longer,
  bgp_show_type_community_all,
  bgp_show_type_community,
  bgp_show_type_community_exact,
  bgp_show_type_community_list,
  bgp_show_type_community_list_exact,
  bgp_show_type_lcommunity_all,
  bgp_show_type_lcommunity,
  bgp_show_type_lcommunity_list,
  bgp_show_type_flap_statistics,
  bgp_show_type_flap_neighbor,
  bgp_show_type_dampend_paths,
  bgp_show_type_damp_neighbor
};


#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];  

#if ENABLE_BGP_VNC
  union {

      struct {
	  void *rfapi_handle;	/* export: NVE advertising this route */
	  struct list	*local_nexthops; /* optional, for static routes */
      } export;

      struct {
	  struct thread *timer;
	  void *hme;		/* encap monitor, if this is a VPN route */
	  struct prefix_rd rd;	/* import: route's route-distinguisher */
	  u_char un_family;	/* family of cached un address, 0 if unset */
	  union {
	    struct in_addr addr4;
	    struct in6_addr addr6;
	  } un;			/* cached un address */
	  time_t create_time;
	  struct prefix aux_prefix; /* AFI_L2VPN: the IP addr, if family set */
      } import;

  } vnc;
#endif
};

struct bgp_info
{
  /* For linked list. */
  struct bgp_info *next;
  struct bgp_info *prev;

  /* For nexthop linked list */
  LIST_ENTRY(bgp_info) nh_thread;

  /* 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_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_SELECTED       (1 << 3)
#define BGP_INFO_VALID          (1 << 4)
#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)
#define BGP_INFO_RIB_ATTR_CHG   (1 << 13)

  /* BGP route type.  This can be static, RIP, OSPF, BGP etc.  */
  u_char type;

  /* 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 
#ifdef ENABLE_BGP_VNC
# define BGP_ROUTE_RFP          4 
#endif

  u_short instance;

  /* Addpath identifiers */
  u_int32_t addpath_rx_id;
  u_int32_t addpath_tx_id;

};

/* BGP static route configuration. */
struct bgp_static
{
  /* Backdoor configuration.  */
  int backdoor;

  /* Label index configuration; applies to LU prefixes. */
  u_int32_t label_index;
#define BGP_INVALID_LABEL_INDEX   0xFFFFFFFF

  /* Import check status.  */
  u_char valid;

  /* IGP metric. */
  u_int32_t igpmetric;

  /* IGP nexthop. */
  struct in_addr igpnexthop;

  /* Atomic set reference count (ie cause of pathlimit) */
  u_int32_t atomic;
  
  /* BGP redistribute route-map.  */
  struct
  {
    char *name;
    struct route_map *map;
  } rmap;

  /* Route Distinguisher */
  struct prefix_rd     prd;

  /* MPLS label.  */
  u_char tag[3];

  /* EVPN */
  struct eth_segment_id *eth_s_id;
  struct ethaddr *router_mac;
  uint16_t   encap_tunneltype;
  struct prefix gatewayIp;
};

#define BGP_NEXTHOP_AFI_FROM_NHLEN(nhlen) \
  ((nhlen) < IPV4_MAX_BYTELEN  ? 0 : \
   ((nhlen) < IPV6_MAX_BYTELEN ? AFI_IP : AFI_IP6))

#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 DISTRIBUTE_OUT(F)       ((F)->dlist[FILTER_OUT].alist)

#define PREFIX_LIST_IN_NAME(F)  ((F)->plist[FILTER_IN].name)
#define PREFIX_LIST_IN(F)       ((F)->plist[FILTER_IN].plist)
#define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
#define PREFIX_LIST_OUT(F)      ((F)->plist[FILTER_OUT].plist)

#define FILTER_LIST_IN_NAME(F)  ((F)->aslist[FILTER_IN].name)
#define FILTER_LIST_IN(F)       ((F)->aslist[FILTER_IN].aslist)
#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[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 UNSUPPRESS_MAP_NAME(F)  ((F)->usmap.name)
#define UNSUPPRESS_MAP(F)       ((F)->usmap.map)

/* path PREFIX (addpath rxid NUMBER) */
#define PATH_ADDPATH_STR_BUFFER PREFIX2STR_BUFFER + 32

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));
}

static inline int
bgp_fibupd_safi (safi_t safi)
{
  if (safi == SAFI_UNICAST ||
      safi == SAFI_MULTICAST ||
      safi == SAFI_LABELED_UNICAST)
    return 1;
  return 0;
}

/* Prototypes. */
extern void bgp_process_queue_init (void);
extern void bgp_route_init (void);
extern void bgp_route_finish (void);
extern void bgp_cleanup_routes (struct bgp *);
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_clear_route (struct peer *, afi_t, safi_t);
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 void bgp_info_path_with_addpath_rx_str (struct bgp_info *ri, char *buf);

extern int bgp_nlri_parse_ip (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 bgp *, struct prefix *, const struct in_addr *,
				  const struct in6_addr *, unsigned int ifindex,
				  u_int32_t, u_char, u_short, route_tag_t);
extern void bgp_redistribute_delete (struct bgp *, struct prefix *, u_char, u_short);
extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int, u_short);

extern void bgp_static_add (struct bgp *);
extern void bgp_static_delete (struct bgp *);
extern void bgp_static_redo_import_check (struct bgp *);
extern void bgp_purge_static_redist_routes (struct bgp *bgp);
extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
			afi_t, safi_t);
extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
                     
extern int bgp_static_set_safi (afi_t afi, safi_t safi, struct vty *vty, const char *,
                                const char *, const char *, const char *,
                                int, const char *, const char *, const char *, const char *);

extern int bgp_static_unset_safi (afi_t afi, safi_t safi, struct vty *, const char *,
                                  const char *, const char *,
                                  int, 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, struct bgp_route_evpn *);
extern int bgp_withdraw (struct peer *, struct prefix *, u_int32_t, struct attr *,
			 afi_t, safi_t, int, int, struct prefix_rd *, u_char *, 
                         struct bgp_route_evpn *);

/* 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 *);
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 *, afi_t, safi_t, int *);

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);

extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, afi_t, safi_t, struct bgp *);

extern afi_t bgp_node_afi (struct vty *);
extern safi_t bgp_node_safi (struct vty *);

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, json_object *);
extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t, u_char, json_object *);
extern void
route_vty_out_overlay (struct vty *vty, struct prefix *p,
                       struct bgp_info *binfo, int display, json_object *json);

extern int
subgroup_process_announce_selected (struct update_subgroup *subgrp,
				    struct bgp_info *selected,
                                    struct bgp_node *rn,
                                    u_int32_t addpath_tx_id);

extern int subgroup_announce_check(struct bgp_node *rn, struct bgp_info *ri,
				   struct update_subgroup *subgrp,
				   struct prefix *p, struct attr *attr);

extern void bgp_peer_clear_node_queue_drain_immediate (struct peer *peer);
extern void bgp_process_queues_drain_immediate (void);

/* for encap/vpn */
extern struct bgp_node *
bgp_afi_node_get (struct bgp_table *, afi_t , safi_t , struct prefix *,
 		  struct prefix_rd *);
extern struct bgp_info *bgp_info_new (void);
extern void bgp_info_restore (struct bgp_node *, struct bgp_info *);

extern int bgp_info_cmp_compatible (struct bgp *, struct bgp_info *,
                                    struct bgp_info *, afi_t, safi_t );

#endif /* _QUAGGA_BGP_ROUTE_H */
Commit	Line	Data
718e3744	1	/* BGP routing information base
896014f4 DL	2	* Copyright (C) 1996, 97, 98, 2000 Kunihiro Ishiguro
	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	*
	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
	19	*/
718e3744	20
00d252cb	21	#ifndef _QUAGGA_BGP_ROUTE_H
	22	#define _QUAGGA_BGP_ROUTE_H
	23
fb018d25	24	#include "queue.h"
200df115	25	#include "bgp_table.h"
200df115	26
fb018d25	27	struct bgp_nexthop_cache;
7ef5a232	28	struct bgp_route_evpn;
fb018d25	29
b2f0fa55 PG	30	enum bgp_show_type
	31	{
	32	bgp_show_type_normal,
	33	bgp_show_type_regexp,
	34	bgp_show_type_prefix_list,
	35	bgp_show_type_filter_list,
	36	bgp_show_type_route_map,
	37	bgp_show_type_neighbor,
	38	bgp_show_type_cidr_only,
	39	bgp_show_type_prefix_longer,
	40	bgp_show_type_community_all,
	41	bgp_show_type_community,
	42	bgp_show_type_community_exact,
	43	bgp_show_type_community_list,
	44	bgp_show_type_community_list_exact,
c016b6c7 DS	45	bgp_show_type_lcommunity_all,
	46	bgp_show_type_lcommunity,
	47	bgp_show_type_lcommunity_list,
b2f0fa55 PG	48	bgp_show_type_flap_statistics,
	49	bgp_show_type_flap_neighbor,
	50	bgp_show_type_dampend_paths,
	51	bgp_show_type_damp_neighbor
	52	};
	53
	54
3f9c7369 DS	55	#define BGP_SHOW_SCODE_HEADER "Status codes: s suppressed, d damped, "\
	56	"h history, * valid, > best, = multipath,%s"\
	57	" i internal, r RIB-failure, S Stale, R Removed%s"
	58	#define BGP_SHOW_OCODE_HEADER "Origin codes: i - IGP, e - EGP, ? - incomplete%s%s"
	59	#define BGP_SHOW_HEADER " Network Next Hop Metric LocPrf Weight Path%s"
	60
fb982c25 PJ	61	/* Ancillary information to struct bgp_info,
	62	* used for uncommonly used data (aggregation, MPLS, etc.)
	63	* and lazily allocated to save memory.
	64	*/
	65	struct bgp_info_extra
	66	{
	67	/* Pointer to dampening structure. */
	68	struct bgp_damp_info *damp_info;
	69
	70	/* This route is suppressed with aggregation. */
	71	int suppress;
	72
	73	/* Nexthop reachability check. */
	74	u_int32_t igpmetric;
	75
	76	/* MPLS label. */
	77	u_char tag[3];
65efcfce LB	78
	79	#if ENABLE_BGP_VNC
	80	union {
	81
	82	struct {
	83	void rfapi_handle; / export: NVE advertising this route */
	84	struct list local_nexthops; / optional, for static routes */
	85	} export;
	86
	87	struct {
b210b827	88	struct thread *timer;
65efcfce LB	89	void hme; / encap monitor, if this is a VPN route */
	90	struct prefix_rd rd; /* import: route's route-distinguisher */
	91	u_char un_family; /* family of cached un address, 0 if unset */
	92	union {
	93	struct in_addr addr4;
	94	struct in6_addr addr6;
	95	} un; /* cached un address */
	96	time_t create_time;
5ef6cd69	97	struct prefix aux_prefix; /* AFI_L2VPN: the IP addr, if family set */
65efcfce LB	98	} import;
	99
	100	} vnc;
	101	#endif
fb982c25 PJ	102	};
fb982c25 PJ	103
718e3744	104	struct bgp_info
	105	{
	106	/* For linked list. */
	107	struct bgp_info *next;
	108	struct bgp_info *prev;
fb018d25 DS	109
	110	/* For nexthop linked list */
	111	LIST_ENTRY(bgp_info) nh_thread;
	112
	113	/* Back pointer to the prefix node */
	114	struct bgp_node *net;
	115
	116	/* Back pointer to the nexthop structure */
	117	struct bgp_nexthop_cache *nexthop;
	118
cbdfbaa5 PJ	119	/* Peer structure. */
	120	struct peer *peer;
	121
	122	/* Attribute structure. */
	123	struct attr *attr;
fb982c25 PJ	124
	125	/* Extra information */
	126	struct bgp_info_extra *extra;
	127
de8d5dff JB	128
	129	/* Multipath information */
	130	struct bgp_info_mpath *mpath;
	131
cbdfbaa5 PJ	132	/* Uptime. */
	133	time_t uptime;
	134
200df115	135	/* reference count */
228da428	136	int lock;
200df115	137
718e3744	138	/* BGP information status. */
93406d87	139	u_int16_t flags;
718e3744	140	#define BGP_INFO_IGP_CHANGED (1 << 0)
	141	#define BGP_INFO_DAMPED (1 << 1)
	142	#define BGP_INFO_HISTORY (1 << 2)
	143	#define BGP_INFO_SELECTED (1 << 3)
	144	#define BGP_INFO_VALID (1 << 4)
	145	#define BGP_INFO_ATTR_CHANGED (1 << 5)
	146	#define BGP_INFO_DMED_CHECK (1 << 6)
	147	#define BGP_INFO_DMED_SELECTED (1 << 7)
93406d87	148	#define BGP_INFO_STALE (1 << 8)
b40d939b	149	#define BGP_INFO_REMOVED (1 << 9)
902212c3	150	#define BGP_INFO_COUNTED (1 << 10)
de8d5dff JB	151	#define BGP_INFO_MULTIPATH (1 << 11)
de8d5dff JB	152	#define BGP_INFO_MULTIPATH_CHG (1 << 12)
cd1964ff	153	#define BGP_INFO_RIB_ATTR_CHG (1 << 13)
718e3744	154
cbdfbaa5 PJ	155	/* BGP route type. This can be static, RIP, OSPF, BGP etc. */
	156	u_char type;
	157
	158	/* When above type is BGP. This sub type specify BGP sub type
	159	information. */
	160	u_char sub_type;
	161	#define BGP_ROUTE_NORMAL 0
	162	#define BGP_ROUTE_STATIC 1
	163	#define BGP_ROUTE_AGGREGATE 2
	164	#define BGP_ROUTE_REDISTRIBUTE 3
65efcfce LB	165	#ifdef ENABLE_BGP_VNC
	166	# define BGP_ROUTE_RFP 4
	167	#endif
7c8ff89e DS	168
	169	u_short instance;
	170
a82478b9 DS	171	/* Addpath identifiers */
	172	u_int32_t addpath_rx_id;
	173	u_int32_t addpath_tx_id;
	174
718e3744	175	};
	176
	177	/* BGP static route configuration. */
	178	struct bgp_static
	179	{
	180	/* Backdoor configuration. */
	181	int backdoor;
	182
1b6d5c7e VV	183	/* Label index configuration; applies to LU prefixes. */
	184	u_int32_t label_index;
	185	#define BGP_INVALID_LABEL_INDEX 0xFFFFFFFF
	186
718e3744	187	/* Import check status. */
	188	u_char valid;
	189
	190	/* IGP metric. */
	191	u_int32_t igpmetric;
	192
	193	/* IGP nexthop. */
	194	struct in_addr igpnexthop;
	195
41367172 PJ	196	/* Atomic set reference count (ie cause of pathlimit) */
	197	u_int32_t atomic;
	198
718e3744	199	/* BGP redistribute route-map. */
	200	struct
	201	{
	202	char *name;
	203	struct route_map *map;
	204	} rmap;
	205
137446f9 LB	206	/* Route Distinguisher */
	207	struct prefix_rd prd;
	208
718e3744	209	/* MPLS label. */
718e3744	210	u_char tag[3];
684a7227 PG	211
	212	/* EVPN */
	213	struct eth_segment_id *eth_s_id;
31689a53	214	struct ethaddr *router_mac;
aee875b5	215	uint16_t encap_tunneltype;
a2dac1ef	216	struct prefix gatewayIp;
718e3744	217	};
718e3744	218
fe3ca08f LB	219	#define BGP_NEXTHOP_AFI_FROM_NHLEN(nhlen) \
	220	((nhlen) < IPV4_MAX_BYTELEN ? 0 : \
	221	((nhlen) < IPV6_MAX_BYTELEN ? AFI_IP : AFI_IP6))
	222
8a92a8a0 DS	223	#define BGP_ATTR_NEXTHOP_AFI_IP6(attr) \
	224	(! CHECK_FLAG (attr->flag, ATTR_FLAG_BIT (BGP_ATTR_NEXT_HOP)) && \
	225	(attr)->extra && ((attr)->extra->mp_nexthop_len == 16 \|\| \
	226	(attr)->extra->mp_nexthop_len == 32))
80e0ad24 DS	227	#define BGP_INFO_COUNTABLE(BI) \
	228	(! CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \
	229	&& ! CHECK_FLAG ((BI)->flags, BGP_INFO_REMOVED))
	230
1a392d46 PJ	231	/* Flags which indicate a route is unuseable in some form */
	232	#define BGP_INFO_UNUSEABLE \
	233	(BGP_INFO_HISTORY\|BGP_INFO_DAMPED\|BGP_INFO_REMOVED)
	234	/* Macro to check BGP information is alive or not. Sadly,
	235	* not equivalent to just checking previous, because of the
	236	* sense of the additional VALID flag.
	237	*/
	238	#define BGP_INFO_HOLDDOWN(BI) \
	239	(! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
	240	\|\| CHECK_FLAG ((BI)->flags, BGP_INFO_UNUSEABLE))
	241
718e3744	242	#define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name)
	243	#define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist)
	244	#define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name)
	245	#define DISTRIBUTE_OUT(F) ((F)->dlist[FILTER_OUT].alist)
	246
	247	#define PREFIX_LIST_IN_NAME(F) ((F)->plist[FILTER_IN].name)
	248	#define PREFIX_LIST_IN(F) ((F)->plist[FILTER_IN].plist)
	249	#define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
	250	#define PREFIX_LIST_OUT(F) ((F)->plist[FILTER_OUT].plist)
	251
	252	#define FILTER_LIST_IN_NAME(F) ((F)->aslist[FILTER_IN].name)
	253	#define FILTER_LIST_IN(F) ((F)->aslist[FILTER_IN].aslist)
	254	#define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
	255	#define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist)
	256
fee0f4c6	257	#define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name)
	258	#define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map)
	259	#define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name)
	260	#define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map)
	261
718e3744	262	#define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name)
	263	#define UNSUPPRESS_MAP(F) ((F)->usmap.map)
	264
2ec1e66f DW	265	/* path PREFIX (addpath rxid NUMBER) */
	266	#define PATH_ADDPATH_STR_BUFFER PREFIX2STR_BUFFER + 32
	267
4092b06c DS	268	enum bgp_path_type
	269	{
	270	BGP_PATH_ALL,
	271	BGP_PATH_BESTPATH,
	272	BGP_PATH_MULTIPATH
	273	};
	274
3f9c7369 DS	275	static inline void
	276	bgp_bump_version (struct bgp_node *node)
	277	{
	278	node->version = bgp_table_next_version(bgp_node_table(node));
	279	}
	280
cd1964ff DS	281	static inline int
	282	bgp_fibupd_safi (safi_t safi)
	283	{
	284	if (safi == SAFI_UNICAST \|\|
	285	safi == SAFI_MULTICAST \|\|
	286	safi == SAFI_LABELED_UNICAST)
	287	return 1;
	288	return 0;
	289	}
	290
718e3744	291	/* Prototypes. */
f188f2c4	292	extern void bgp_process_queue_init (void);
94f2b392	293	extern void bgp_route_init (void);
228da428	294	extern void bgp_route_finish (void);
0c6262ed	295	extern void bgp_cleanup_routes (struct bgp *);
94f2b392	296	extern void bgp_announce_route (struct peer *, afi_t, safi_t);
3f9c7369	297	extern void bgp_stop_announce_route_timer(struct peer_af *paf);
94f2b392	298	extern void bgp_announce_route_all (struct peer *);
	299	extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
	300	extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
2a3d5731	301	extern void bgp_clear_route (struct peer *, afi_t, safi_t);
94f2b392	302	extern void bgp_clear_route_all (struct peer *);
	303	extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
	304	extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
718e3744	305
4125bb67 DS	306	extern struct bgp_node bgp_afi_node_get (struct bgp_table table, afi_t afi,
	307	safi_t safi, struct prefix *p,
	308	struct prefix_rd *prd);
200df115	309	extern struct bgp_info bgp_info_lock (struct bgp_info );
	310	extern struct bgp_info bgp_info_unlock (struct bgp_info );
	311	extern void bgp_info_add (struct bgp_node rn, struct bgp_info ri);
	312	extern void bgp_info_delete (struct bgp_node rn, struct bgp_info ri);
fb982c25	313	extern struct bgp_info_extra bgp_info_extra_get (struct bgp_info );
1a392d46 PJ	314	extern void bgp_info_set_flag (struct bgp_node , struct bgp_info , u_int32_t);
1a392d46 PJ	315	extern void bgp_info_unset_flag (struct bgp_node , struct bgp_info , u_int32_t);
2ec1e66f	316	extern void bgp_info_path_with_addpath_rx_str (struct bgp_info ri, char buf);
200df115	317
96e52474	318	extern int bgp_nlri_parse_ip (struct peer , struct attr , struct bgp_nlri *);
718e3744	319
94f2b392	320	extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
718e3744	321
6aeb9e78	322	extern void bgp_redistribute_add (struct bgp , struct prefix , const struct in_addr *,
bc413143	323	const struct in6_addr *, unsigned int ifindex,
dc9ffce8	324	u_int32_t, u_char, u_short, route_tag_t);
6aeb9e78	325	extern void bgp_redistribute_delete (struct bgp , struct prefix , u_char, u_short);
7c8ff89e	326	extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int, u_short);
718e3744	327
6aeb9e78	328	extern void bgp_static_add (struct bgp *);
94f2b392	329	extern void bgp_static_delete (struct bgp *);
078430f6	330	extern void bgp_static_redo_import_check (struct bgp *);
ad4cbda1	331	extern void bgp_purge_static_redist_routes (struct bgp *bgp);
94f2b392	332	extern void bgp_static_update (struct bgp , struct prefix , struct bgp_static *,
718e3744	333	afi_t, safi_t);
94f2b392	334	extern void bgp_static_withdraw (struct bgp , struct prefix , afi_t, safi_t);
718e3744	335
201c3dac	336	extern int bgp_static_set_safi (afi_t afi, safi_t safi, struct vty vty, const char ,
3da6fcd5 PG	337	const char , const char , const char *,
3da6fcd5 PG	338	int, const char , const char , const char , const char );
718e3744	339
201c3dac	340	extern int bgp_static_unset_safi (afi_t afi, safi_t safi, struct vty , const char ,
3da6fcd5 PG	341	const char , const char ,
3da6fcd5 PG	342	int, const char , const char , const char *);
718e3744	343
94f2b392	344	/* this is primarily for MPLS-VPN */
a82478b9	345	extern int bgp_update (struct peer , struct prefix , u_int32_t, struct attr *,
7ef5a232 PG	346	afi_t, safi_t, int, int, struct prefix_rd *,
7ef5a232 PG	347	u_char , int, struct bgp_route_evpn );
a82478b9	348	extern int bgp_withdraw (struct peer , struct prefix , u_int32_t, struct attr *,
7ef5a232 PG	349	afi_t, safi_t, int, int, struct prefix_rd , u_char ,
7ef5a232 PG	350	struct bgp_route_evpn *);
718e3744	351
94f2b392	352	/* for bgp_nexthop and bgp_damp */
94f2b392	353	extern void bgp_process (struct bgp , struct bgp_node , afi_t, safi_t);
cb1faec9 DS	354
	355	/*
	356	* Add an end-of-initial-update marker to the process queue. This is just a
	357	* queue element with NULL bgp node.
	358	*/
2a3d5731	359	extern void bgp_add_eoiu_mark (struct bgp *);
73ac8160 DS	360	extern int bgp_config_write_table_map (struct vty , struct bgp , afi_t, safi_t,
73ac8160 DS	361	int *);
94f2b392	362	extern int bgp_config_write_network (struct vty , struct bgp , afi_t, safi_t, int *);
734b349e	363	extern int bgp_config_write_distance (struct vty , struct bgp , afi_t, safi_t, int *);
94f2b392	364
94f2b392	365	extern void bgp_aggregate_increment (struct bgp , struct prefix , struct bgp_info *,
718e3744	366	afi_t, safi_t);
94f2b392	367	extern void bgp_aggregate_decrement (struct bgp , struct prefix , struct bgp_info *,
718e3744	368	afi_t, safi_t);
718e3744	369
734b349e	370	extern u_char bgp_distance_apply (struct prefix , struct bgp_info , afi_t, safi_t, struct bgp *);
718e3744	371
94f2b392	372	extern afi_t bgp_node_afi (struct vty *);
94f2b392	373	extern safi_t bgp_node_safi (struct vty *);
5a646650	374
b05a1c8b	375	extern void route_vty_out (struct vty , struct prefix , struct bgp_info , int, safi_t, json_object );
856ca177 MS	376	extern void route_vty_out_tag (struct vty , struct prefix , struct bgp_info , int, safi_t, json_object );
856ca177 MS	377	extern void route_vty_out_tmp (struct vty , struct prefix , struct attr , safi_t, u_char, json_object );
784d3a42 PG	378	extern void
	379	route_vty_out_overlay (struct vty vty, struct prefix p,
	380	struct bgp_info binfo, int display, json_object json);
00d252cb	381
3f9c7369 DS	382	extern int
	383	subgroup_process_announce_selected (struct update_subgroup *subgrp,
	384	struct bgp_info *selected,
adbac85e DW	385	struct bgp_node *rn,
adbac85e DW	386	u_int32_t addpath_tx_id);
3f9c7369	387
cd1964ff	388	extern int subgroup_announce_check(struct bgp_node rn, struct bgp_info ri,
3f9c7369 DS	389	struct update_subgroup *subgrp,
	390	struct prefix p, struct attr attr);
	391
bb86c601 LB	392	extern void bgp_peer_clear_node_queue_drain_immediate (struct peer *peer);
	393	extern void bgp_process_queues_drain_immediate (void);
	394
65efcfce LB	395	/* for encap/vpn */
	396	extern struct bgp_node *
	397	bgp_afi_node_get (struct bgp_table , afi_t , safi_t , struct prefix ,
	398	struct prefix_rd *);
	399	extern struct bgp_info *bgp_info_new (void);
	400	extern void bgp_info_restore (struct bgp_node , struct bgp_info );
	401
	402	extern int bgp_info_cmp_compatible (struct bgp , struct bgp_info ,
	403	struct bgp_info *, afi_t, safi_t );
	404
00d252cb	405	#endif /* _QUAGGA_BGP_ROUTE_H */