1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 1993, 1994, 1995
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#ifndef _NETINET_TCP_ECN_H_
33#define _NETINET_TCP_ECN_H_
34
35#ifdef _KERNEL
36
37#include <netinet/tcp.h>
38#include <netinet/tcp_var.h>
39#include <netinet/tcp_syncache.h>
40
41#define TH_ACE_SHIFT 6
42
43void	 tcp_ecn_input_syn_sent(struct tcpcb *, uint16_t, int);
44void	 tcp_ecn_input_parallel_syn(struct tcpcb *, uint16_t, int);
45int	 tcp_ecn_input_segment(struct tcpcb *, uint16_t, int, int, int);
46uint16_t tcp_ecn_output_syn_sent(struct tcpcb *);
47int	 tcp_ecn_output_established(struct tcpcb *, uint16_t *, int, bool);
48void	 tcp_ecn_syncache_socket(struct tcpcb *, struct syncache *);
49int	 tcp_ecn_syncache_add(uint16_t, int);
50uint16_t tcp_ecn_syncache_respond(uint16_t, struct syncache *);
51
52#endif /* _KERNEL */
53
54#endif /* _NETINET_TCP_ECN_H_ */
55