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/*
* Ouroboros - Copyright (C) 2016 - 2026
*
* Congestion avoidance
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#ifndef OUROBOROS_IPCPD_UNICAST_CA_H
#define OUROBOROS_IPCPD_UNICAST_CA_H
#include <ouroboros/ipcp.h>
#include <ouroboros/qoscube.h>
#include <stdbool.h>
#include <sys/types.h>
/* Buffer a policy's ca_print_stats output must fit in. */
#define CA_STATS_STRLEN 2048
int ca_init(enum pol_cong_avoid ca,
uint32_t rtt_ms);
void ca_fini(void);
/* OPS */
void * ca_ctx_get(uint64_t addr,
qoscube_t qc);
void ca_ctx_put(void * ctx);
time_t ca_ctx_update_snd(void * ctx,
size_t len,
uint8_t lecn,
uint64_t * ftag);
bool ca_ctx_update_rcv(void * ctx,
size_t len,
uint8_t ecn,
uint8_t cap,
uint16_t * ece,
uint8_t * fcap);
void ca_ctx_update_ece(void * ctx,
uint16_t ece,
uint8_t cap);
bool ca_ctx_hb_due(void * ctx,
uint64_t now);
void ca_ctx_rtt(void * ctx,
uint64_t now,
uint64_t rtt);
int ca_calc_ecn(size_t queued,
uint8_t * ecn,
qoscube_t qc,
size_t len);
bool ca_marks_ecn(void);
ssize_t ca_print_stats(void * ctx,
char * buf,
size_t len);
#endif /* OUROBOROS_IPCPD_UNICAST_CA_H */
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