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112 lines
2.3 KiB
C
112 lines
2.3 KiB
C
/*
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* BIRD -- Aggregator Pseudoprotocol
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*
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* (c) 2023 Igor Putovny <igor.putovny@nic.cz>
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* (c) 2023 Maria Matejka <mq@ucw.cz>
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* (c) 2023 CZ.NIC z.s.p.o.
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*
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* This file contains the data structures used by Babel.
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*/
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#ifndef _BIRD_AGGREGATOR_H_
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#define _BIRD_AGGREGATOR_H_
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#include "nest/bird.h"
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#include "nest/protocol.h"
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#include "lib/hash.h"
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#define MAX_POTENTIAL_NEXTHOP_COUNT 16
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struct aggregator_config {
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struct proto_config c;
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struct channel_config *src, *dst;
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uint aggr_on_count;
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uint aggr_on_da_count;
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struct aggr_item *aggr_on;
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const struct f_line *merge_by;
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};
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struct aggregator_route {
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struct aggregator_route *next_hash;
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struct aggregator_bucket *bucket;
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struct rte rte;
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};
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struct aggregator_bucket {
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struct aggregator_bucket *next_hash;
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struct rte *rte; /* Pointer to struct aggregator_route.rte */
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struct rte_src *last_src; /* Which src we announced the bucket last with */
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u32 count;
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u32 hash;
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struct f_val aggr_data[0];
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};
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struct aggregator_proto {
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struct proto p;
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struct channel *src, *dst;
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/* Buckets by aggregator rule */
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HASH(struct aggregator_bucket) buckets;
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slab *bucket_slab;
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/* Routes by net and src */
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HASH(struct aggregator_route) routes;
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slab *route_slab;
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/* Aggregator rule */
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uint aggr_on_count;
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uint aggr_on_da_count;
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struct aggr_item *aggr_on;
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/* Merge filter */
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const struct f_line *merge_by;
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event reload_buckets;
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/* Aggregation trie */
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slab *trie_slab;
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struct trie_node *root;
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};
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enum aggr_item_type {
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AGGR_ITEM_TERM,
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AGGR_ITEM_STATIC_ATTR,
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AGGR_ITEM_DYNAMIC_ATTR,
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};
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struct aggr_item {
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enum aggr_item_type type;
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union {
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struct f_static_attr sa;
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struct f_dynamic_attr da;
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const struct f_line *line;
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};
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};
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struct aggr_item_node {
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const struct aggr_item_node *next;
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struct aggr_item i;
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};
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struct trie_node {
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struct trie_node *parent;
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struct trie_node *child[2];
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struct aggregator_bucket *bucket;
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struct aggregator_bucket *potential_buckets[MAX_POTENTIAL_NEXTHOP_COUNT];
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int potential_buckets_count;
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};
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struct prefix_bucket {
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net_addr_ip4 trie_prefix;
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struct aggregator_bucket *bucket;
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};
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struct aggregated_prefixes {
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int count;
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int capacity;
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struct prefix_bucket prefix_buckets[];
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};
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#endif
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