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 TCPLP_NETINET_CC_MODULE_H_ 44 #define TCPLP_NETINET_CC_MODULE_H_ 45 46 /* samkumar: This was already commented out in FreeBSD (I didn't do it). */ 47 /* 48 * Allows a CC algorithm to manipulate a commonly named CC variable regardless 49 * of the transport protocol and associated C struct. 50 * XXXLAS: Out of action until the work to support SCTP is done. 51 * 52 #define CCV(ccv, what) \ 53 (*( \ 54 (ccv)->type == IPPROTO_TCP ? &(ccv)->ccvc.tcp->what : \ 55 &(ccv)->ccvc.sctp->what \ 56 )) 57 */ 58 #define CCV(ccv, what) (ccv)->ccvc.tcp->what 59 60 /* 61 * samkumar: I've commented this out (using #if 0) because our current TCPlp 62 * implementation hardcodes New Reno. Thus, we don't need FreeBSD's "module" 63 * mechanism to choose a congestion control algorithm. 64 */ 65 #if 0 66 #define DECLARE_CC_MODULE(ccname, ccalgo) \ 67 static moduledata_t cc_##ccname = { \ 68 .name = #ccname, \ 69 .evhand = cc_modevent, \ 70 .priv = ccalgo \ 71 }; \ 72 DECLARE_MODULE(ccname, cc_##ccname, \ 73 SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY) 74 75 int cc_modevent(module_t mod, int type, void *data); 76 #endif 77 78 #endif /* _NETINET_CC_MODULE_H_ */ 79