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/*
* Ouroboros - Copyright (C) 2016 - 2026
*
* Link capacity estimation
*
* 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_CAP_H
#define OUROBOROS_IPCPD_UNICAST_CAP_H
#include <stddef.h>
#include <stdint.h>
int cap_init(void);
void cap_fini(void);
/* Account an egress packet; qlen is sampled before the write. */
void cap_update(int fd,
size_t qlen,
size_t len);
uint8_t cap_get(int fd);
void cap_reset(int fd);
/* Quarter-log2 capacity code: ~2^(c / 4) bytes/s, 0 = unknown. */
uint8_t cap_enc(uint64_t rate);
uint64_t cap_dec(uint8_t c);
uint8_t cap_min(uint8_t a,
uint8_t b);
/* MIN-combine the own link code into the PCI byte. */
void cap_stamp(uint8_t * pci,
uint8_t own);
#endif /* OUROBOROS_IPCPD_UNICAST_CAP_H */
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