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// SPDX-License-Identifier: GPL-2.0-or-later
/* BGP advertisement and adjacency
* Copyright (C) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro
*/
#ifndef _QUAGGA_BGP_ADVERTISE_H
#define _QUAGGA_BGP_ADVERTISE_H
#include "lib/typesafe.h"
PREDECL_DLIST(bgp_adv_fifo);
struct update_subgroup;
struct bgp_advertise;
PREDECL_DLIST(bgp_advertise_attr_fifo);
struct bgp_advertise_attr;
/* BGP advertise attribute. */
struct bgp_advertise {
/* FIFO for advertisement. */
struct bgp_adv_fifo_item fifo;
/* FIFO for this item in the bgp_advertise_attr fifo */
struct bgp_advertise_attr_fifo_item item;
/* Prefix information. */
struct bgp_dest *dest;
/* Reference pointer. */
struct bgp_adj_out *adj;
/* Advertisement attribute. */
struct bgp_advertise_attr *baa;
/* BGP info. */
struct bgp_path_info *pathi;
};
DECLARE_DLIST(bgp_advertise_attr_fifo, struct bgp_advertise, item);
DECLARE_DLIST(bgp_adv_fifo, struct bgp_advertise, fifo);
/* BGP advertise attribute. */
struct bgp_advertise_attr {
/* Head of advertisement pointer. */
struct bgp_advertise_attr_fifo_head fifo;
/* Reference counter. */
unsigned long refcnt;
/* Attribute pointer to be announced. */
struct attr *attr;
};
/* BGP adjacency out. */
struct bgp_adj_out {
/* RB Tree of adjacency entries */
RB_ENTRY(bgp_adj_out) adj_entry;
/* Advertised subgroup. */
struct update_subgroup *subgroup;
/* Threading that makes the adj part of subgroup's adj queue */
TAILQ_ENTRY(bgp_adj_out) subgrp_adj_train;
/* Prefix information. */
struct bgp_dest *dest;
uint32_t addpath_tx_id;
/* Advertised attribute. */
struct attr *attr;
/* Advertisement information. */
struct bgp_advertise *adv;
/* Attribute hash */
uint32_t attr_hash;
};
RB_HEAD(bgp_adj_out_rb, bgp_adj_out);
RB_PROTOTYPE(bgp_adj_out_rb, bgp_adj_out, adj_entry,
bgp_adj_out_compare);
/* BGP adjacency in. */
struct bgp_adj_in {
/* Linked list pointer. */
struct bgp_adj_in *next;
struct bgp_adj_in *prev;
/* Received peer. */
struct peer *peer;
/* Received attribute. */
struct attr *attr;
/* timestamp (monotime) */
time_t uptime;
/* Addpath identifier */
uint32_t addpath_rx_id;
};
/* BGP advertisement list. */
struct bgp_synchronize {
struct bgp_adv_fifo_head update;
struct bgp_adv_fifo_head withdraw;
};
/* BGP adjacency linked list. */
#define BGP_PATH_INFO_ADD(N, A, TYPE) \
do { \
(A)->prev = NULL; \
(A)->next = (N)->TYPE; \
if ((N)->TYPE) \
(N)->TYPE->prev = (A); \
(N)->TYPE = (A); \
} while (0)
#define BGP_PATH_INFO_DEL(N, A, TYPE) \
do { \
if ((A)->next) \
(A)->next->prev = (A)->prev; \
if ((A)->prev) \
(A)->prev->next = (A)->next; \
else \
(N)->TYPE = (A)->next; \
} while (0)
#define BGP_ADJ_IN_ADD(N, A) BGP_PATH_INFO_ADD(N, A, adj_in)
#define BGP_ADJ_IN_DEL(N, A) BGP_PATH_INFO_DEL(N, A, adj_in)
/* Prototypes. */
extern bool bgp_adj_out_lookup(struct peer *peer, struct bgp_dest *dest,
uint32_t addpath_tx_id);
extern void bgp_adj_in_set(struct bgp_dest *dest, struct peer *peer,
struct attr *attr, uint32_t addpath_id);
extern bool bgp_adj_in_unset(struct bgp_dest **dest, struct peer *peer,
uint32_t addpath_id);
extern void bgp_adj_in_remove(struct bgp_dest **dest, struct bgp_adj_in *bai);
extern unsigned int bgp_advertise_attr_hash_key(const void *p);
extern bool bgp_advertise_attr_hash_cmp(const void *p1, const void *p2);
extern void bgp_advertise_add(struct bgp_advertise_attr *baa,
struct bgp_advertise *adv);
extern struct bgp_advertise *bgp_advertise_new(void);
extern void bgp_advertise_free(struct bgp_advertise *adv);
extern struct bgp_advertise_attr *bgp_advertise_attr_intern(struct hash *hash,
struct attr *attr);
extern struct bgp_advertise_attr *bgp_advertise_attr_new(void);
extern void bgp_advertise_delete(struct bgp_advertise_attr *baa,
struct bgp_advertise *adv);
extern void bgp_advertise_attr_unintern(struct hash *hash,
struct bgp_advertise_attr *baa);
extern void bgp_advertise_attr_free(struct bgp_advertise_attr *baa);
#endif /* _QUAGGA_BGP_ADVERTISE_H */
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