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 * $FreeBSD$ 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_ */ 61