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/netinet/ip_divert.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 2003 Sam Leffler, Errno Consulting
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer,
   12  *    without modification.
   13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   14  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   15  *    redistribution must be conditioned upon including a substantially
   16  *    similar Disclaimer requirement for further binary redistribution.
   17  * 3. Neither the names of the above-listed copyright holders nor the names
   18  *    of any contributors may be used to endorse or promote products derived
   19  *    from this software without specific prior written permission.
   20  *
   21  * NO WARRANTY
   22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   24  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   25  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   26  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   27  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   30  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   32  * THE POSSIBILITY OF SUCH DAMAGES.
   33  *
   34  * $FreeBSD: releng/12.0/sys/netinet/ip_divert.h 326272 2017-11-27 15:23:17Z pfg $
   35  */
   36 
   37 #ifndef _NETINET_IP_DIVERT_H_
   38 #define _NETINET_IP_DIVERT_H_
   39 
   40 /*
   41  * divert has no custom kernel-userland API.
   42  *
   43  * All communication occurs through a sockaddr_in socket where
   44  *
   45  * kernel-->userland
   46  *      sin_port = matching rule, host format;
   47  *      sin_addr = IN: first address of the incoming interface;
   48  *                 OUT: INADDR_ANY
   49  *      sin_zero = if fits, the interface name (max 7 bytes + NUL)
   50  *
   51  * userland->kernel
   52  *      sin_port = restart-rule - 1, host order
   53  *              (we restart at sin_port + 1)
   54  *      sin_addr = IN: address of the incoming interface;
   55  *                 OUT: INADDR_ANY
   56  */
   57 #endif /* _NETINET_IP_DIVERT_H_ */

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