1/*-
2 * Copyright (c) 2009-2010 Lawrence Stewart <lstewart@freebsd.org>
3 * All rights reserved.
4 *
5 * This software was developed by Lawrence Stewart while studying at the Centre
6 * for Advanced Internet Architectures, Swinburne University of Technology, made
7 * possible in part by a grant from the Cisco University Research Program Fund
8 * at Community Foundation Silicon Valley.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 * $FreeBSD$
32 */
33
34/*
35 * This software was first released in 2009 by Lawrence Stewart as part of the
36 * NewTCP research project at Swinburne University of Technology's Centre for
37 * Advanced Internet Architectures, Melbourne, Australia, which was made
38 * possible in part by a grant from the Cisco University Research Program Fund
39 * at Community Foundation Silicon Valley. More details are available at:
40 *   http://caia.swin.edu.au/urp/newtcp/
41 */
42
43#ifndef _NETINET_CC_MODULE_H_
44#define _NETINET_CC_MODULE_H_
45
46/*
47 * Allows a CC algorithm to manipulate a commonly named CC variable regardless
48 * of the transport protocol and associated C struct.
49 * XXXLAS: Out of action until the work to support SCTP is done.
50 *
51#define	CCV(ccv, what)							\
52(*(									\
53	(ccv)->type == IPPROTO_TCP ?	&(ccv)->ccvc.tcp->what :	\
54					&(ccv)->ccvc.sctp->what		\
55))
56 */
57#define	CCV(ccv, what) (ccv)->ccvc.tcp->what
58
59#define	DECLARE_CC_MODULE(ccname, ccalgo) 				\
60	static moduledata_t cc_##ccname = {				\
61		.name = #ccname,					\
62		.evhand = cc_modevent,					\
63		.priv = ccalgo						\
64	};								\
65	DECLARE_MODULE(ccname, cc_##ccname,				\
66	    SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY)
67
68int	cc_modevent(module_t mod, int type, void *data);
69
70#endif /* _NETINET_CC_MODULE_H_ */
71