1 /*- 2 * Copyright (c) 2010 Lawrence Stewart <lstewart@freebsd.org> 3 * Copyright (c) 2010 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * This software was developed by Lawrence Stewart while studying at the Centre 7 * for Advanced Internet Architectures, Swinburne University, made possible in 8 * part by grants from the FreeBSD Foundation and Cisco University Research 9 * Program Fund at Community Foundation Silicon Valley. 10 * 11 * Portions of this software were developed at the Centre for Advanced 12 * Internet Architectures, Swinburne University of Technology, Melbourne, 13 * Australia by Lawrence Stewart under sponsorship from the FreeBSD Foundation. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $FreeBSD$ 37 */ 38 39 /* 40 * A KPI for managing kernel helper modules which perform useful functionality 41 * within the kernel. Originally released as part of the NewTCP research 42 * project at Swinburne University's Centre for Advanced Internet Architectures, 43 * Melbourne, Australia, which was made possible in part by a grant from the 44 * Cisco University Research Program Fund at Community Foundation Silicon 45 * Valley. More details are available at: 46 * http://caia.swin.edu.au/urp/newtcp/ 47 */ 48 49 #ifndef _SYS_KHELP_H_ 50 #define _SYS_KHELP_H_ 51 52 struct helper; 53 struct hookinfo; 54 struct osd; 55 56 /* Helper classes. */ 57 #define HELPER_CLASS_TCP 0x00000001 58 59 /* Public KPI functions. */ 60 int khelp_register_helper(struct helper *h); 61 62 int khelp_deregister_helper(struct helper *h); 63 64 int khelp_init_osd(uint32_t classes, struct osd *hosd); 65 66 int khelp_destroy_osd(struct osd *hosd); 67 68 void * khelp_get_osd(struct osd *hosd, int32_t id); 69 70 int32_t khelp_get_id(char *hname); 71 72 int khelp_add_hhook(struct hookinfo *hki, uint32_t flags); 73 74 int khelp_remove_hhook(struct hookinfo *hki); 75 76 #endif /* _SYS_KHELP_H_ */ 77