aspa.h

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/*
 * This file is part of RTRlib.
 *
 * This file is subject to the terms and conditions of the MIT license.
 * See the file LICENSE in the top level directory for more details.
 *
 * Website: http://rtrlib.realmv6.org/
 */
 
#ifndef RTR_ASPA_H
#define RTR_ASPA_H
 
#include "rtrlib/aspa/aspa_array/aspa_array.h"
#include "rtrlib/lib/alloc_utils_private.h"
#include "rtrlib/rtr/rtr.h"
 
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
 
struct aspa_record {
        uint32_t customer_asn;
        size_t provider_count;
        uint32_t *provider_asns;
};
 
// MARK: - ASPA Table
 
struct aspa_table;
 
enum __attribute__((__packed__)) aspa_operation_type {
        ASPA_REMOVE = 0,
 
        ASPA_ADD = 1
};
 
typedef void (*aspa_update_fp)(struct aspa_table *aspa_table, const struct aspa_record record,
                               const struct rtr_socket *rtr_socket, const enum aspa_operation_type operation_type);
 
struct aspa_table {
        pthread_rwlock_t lock;
        pthread_rwlock_t update_lock;
        aspa_update_fp update_fp;
        struct aspa_store_node *store;
};
 
enum aspa_status {
        ASPA_SUCCESS = 0,
 
        ASPA_ERROR = -1,
 
        ASPA_DUPLICATE_RECORD = -2,
 
        ASPA_RECORD_NOT_FOUND = -3,
};
 
void aspa_table_init(struct aspa_table *aspa_table, aspa_update_fp update_fp);
 
void aspa_table_free(struct aspa_table *aspa_table, bool notify);
 
enum aspa_status aspa_table_src_remove(struct aspa_table *aspa_table, struct rtr_socket *rtr_socket, bool notify);
 
// MARK: - AS_PATH Verification
 
enum aspa_direction { ASPA_UPSTREAM, ASPA_DOWNSTREAM };
 
enum aspa_verification_result {
        ASPA_AS_PATH_UNKNOWN,
        ASPA_AS_PATH_INVALID,
        ASPA_AS_PATH_VALID,
};
 
enum aspa_verification_result aspa_verify_as_path(struct aspa_table *aspa_table, uint32_t as_path[], size_t len,
                                                  enum aspa_direction direction);
 
size_t aspa_collapse_as_path(uint32_t as_path[], size_t len);
 
#endif /* RTR_ASPA_H */