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_options.h

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    1 /*
    2  * Copyright (c) 1982, 1986, 1993
    3  *      The Regents of the University of California.
    4  * Copyright (c) 2005 Andre Oppermann, Internet Business Solutions AG.
    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  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 4. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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: stable/9/sys/netinet/ip_options.h 189343 2009-03-04 02:51:22Z bms $
   32  */
   33 
   34 #ifndef _NETINET_IP_OPTIONS_H_
   35 #define _NETINET_IP_OPTIONS_H_
   36 
   37 struct ipoptrt {
   38         struct  in_addr dst;                    /* final destination */
   39         char    nop;                            /* one NOP to align */
   40         char    srcopt[IPOPT_OFFSET + 1];       /* OPTVAL, OLEN and OFFSET */
   41         struct  in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)];
   42 };
   43 
   44 struct ipopt_tag {
   45         struct  m_tag tag;                      /* m_tag */
   46         int     ip_nhops;
   47         struct  ipoptrt ip_srcrt;
   48 };
   49 
   50 extern  int     ip_doopts;              /* process or ignore IP options */
   51 
   52 int              ip_checkrouteralert(struct mbuf *);
   53 int              ip_dooptions(struct mbuf *, int);
   54 struct mbuf     *ip_insertoptions(struct mbuf *, struct mbuf *, int *);
   55 int              ip_optcopy(struct ip *, struct ip *);
   56 int              ip_pcbopts(struct inpcb *, int, struct mbuf *);
   57 void             ip_stripoptions(struct mbuf *, struct mbuf *);
   58 struct mbuf     *ip_srcroute(struct mbuf *);
   59 
   60 #endif /* !_NETINET_IP_OPTIONS_H_ */

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