b1258b7643
Accurate ECN asks to conservatively estimate, when the ACE counter may have wrapped due to a single ACK covering a larger number of segments. This is described in Annex A.2 of the accurate-ecn draft. Event: IETF 115 Hackathon Reviewed By: tuexen, #transport Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D37281
57 lines
2.4 KiB
C
57 lines
2.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1982, 1986, 1993, 1994, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tcp_ecn.h 8.4 (Berkeley) 5/24/95
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* $FreeBSD$
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*/
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#ifndef _NETINET_TCP_ECN_H_
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#define _NETINET_TCP_ECN_H_
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#ifdef _KERNEL
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#include <netinet/tcp.h>
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#include <netinet/tcp_var.h>
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#include <netinet/tcp_syncache.h>
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void tcp_ecn_input_syn_sent(struct tcpcb *, uint16_t, int);
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void tcp_ecn_input_parallel_syn(struct tcpcb *, uint16_t, int);
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int tcp_ecn_input_segment(struct tcpcb *, uint16_t, int, int, int);
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uint16_t tcp_ecn_output_syn_sent(struct tcpcb *);
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int tcp_ecn_output_established(struct tcpcb *, uint16_t *, int, bool);
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void tcp_ecn_syncache_socket(struct tcpcb *, struct syncache *);
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int tcp_ecn_syncache_add(uint16_t, int);
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uint16_t tcp_ecn_syncache_respond(uint16_t, struct syncache *);
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int tcp_ecn_get_ace(uint16_t);
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#endif /* _KERNEL */
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#endif /* _NETINET_TCP_ECN_H_ */
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