The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/khelp.h

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    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 of Technology, made
    8  * possible in part by grants from the FreeBSD Foundation and Cisco University
    9  * Research 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: releng/10.0/sys/sys/khelp.h 220560 2011-04-12 08:13:18Z lstewart $
   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 
   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_ */

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