1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2010 Lawrence Stewart <lstewart@freebsd.org> 5 * Copyright (c) 2010 The FreeBSD Foundation 6 * All rights reserved. 7 * 8 * This software was developed by Lawrence Stewart while studying at the Centre 9 * for Advanced Internet Architectures, Swinburne University of Technology, made 10 * possible in part by grants from the FreeBSD Foundation and Cisco University 11 * Research Program Fund at Community Foundation Silicon Valley. 12 * 13 * Portions of this software were developed at the Centre for Advanced 14 * Internet Architectures, Swinburne University of Technology, Melbourne, 15 * Australia by Lawrence Stewart under sponsorship from the FreeBSD Foundation. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 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 project 42 * at Swinburne University of Technology's Centre for Advanced Internet 43 * Architectures, Melbourne, Australia, which was made possible in part by a 44 * grant from the Cisco University Research Program Fund at Community Foundation 45 * Silicon 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 #define HELPER_CLASS_SOCKET 0x00000002 59 60 /* Public KPI functions. */ 61 int khelp_register_helper(struct helper *h); 62 63 int khelp_deregister_helper(struct helper *h); 64 65 int khelp_init_osd(uint32_t classes, struct osd *hosd); 66 67 int khelp_destroy_osd(struct osd *hosd); 68 69 void * khelp_get_osd(struct osd *hosd, int32_t id); 70 71 int32_t khelp_get_id(char *hname); 72 73 int khelp_add_hhook(struct hookinfo *hki, uint32_t flags); 74 75 int khelp_remove_hhook(struct hookinfo *hki); 76 77 #endif /* _SYS_KHELP_H_ */ 78