4012ef7754
The AccECN handshake and TCP header flags are supported, no support yet for the AccECN option. This minimalistic implementation is sufficient to support DCTCP while dramatically cutting the number of ACKs, and provide ECN response from the receiver to the CC modules. Reviewed By: #transport, #manpages, rrs, pauamma Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D21011
57 lines
2.4 KiB
C
57 lines
2.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1982, 1986, 1993, 1994, 1995
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)tcp_ecn.h 8.4 (Berkeley) 5/24/95
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NETINET_TCP_ECN_H_
|
|
#define _NETINET_TCP_ECN_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <netinet/tcp.h>
|
|
#include <netinet/tcp_var.h>
|
|
#include <netinet/tcp_syncache.h>
|
|
|
|
void tcp_ecn_input_syn_sent(struct tcpcb *, uint16_t, int);
|
|
void tcp_ecn_input_parallel_syn(struct tcpcb *, uint16_t, int);
|
|
int tcp_ecn_input_segment(struct tcpcb *, uint16_t, int);
|
|
uint16_t tcp_ecn_output_syn_sent(struct tcpcb *);
|
|
int tcp_ecn_output_established(struct tcpcb *, uint16_t *, int, bool);
|
|
void tcp_ecn_syncache_socket(struct tcpcb *, struct syncache *);
|
|
int tcp_ecn_syncache_add(uint16_t, int);
|
|
uint16_t tcp_ecn_syncache_respond(uint16_t, struct syncache *);
|
|
int tcp_ecn_get_ace(uint16_t);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NETINET_TCP_ECN_H_ */
|