77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
/* $NetBSD: tcp_congctl.h,v 1.3 2006/10/21 10:24:47 yamt Exp $ */
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/*
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* Copyright (c) 2006 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Rui Paulo.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NETINET_TCP_CONGCTL_H
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#define _NETINET_TCP_CONGCTL_H
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/*
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* Congestion control function table.
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*/
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struct tcp_congctl {
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int (*fast_retransmit)(struct tcpcb *, const struct tcphdr *);
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void (*slow_retransmit)(struct tcpcb *);
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void (*fast_retransmit_newack)(struct tcpcb *, const struct tcphdr *);
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void (*newack)(struct tcpcb *, const struct tcphdr *);
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void (*cong_exp)(struct tcpcb *);
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uint32_t refcnt;
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};
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extern struct tcp_congctl tcp_reno_ctl;
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extern struct tcp_congctl tcp_newreno_ctl;
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extern struct simplelock tcp_congctl_slock;
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#define TCPCC_MAXLEN 12
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/* currently selected global congestion control */
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struct tcp_congctl *tcp_congctl_global;
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char tcp_congctl_global_name[TCPCC_MAXLEN];
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/* available global congestion control algorithms */
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char tcp_congctl_avail[10 * TCPCC_MAXLEN];
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void tcp_congctl_init(void);
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int tcp_congctl_register(const char *, struct tcp_congctl *);
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int tcp_congctl_unregister(const char *);
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int tcp_congctl_select(struct tcpcb *, const char *);
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const char *
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tcp_congctl_bystruct(const struct tcp_congctl *);
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#endif /* _NETINET_TCP_CONGCTL_H */
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