1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. 6 * Copyright (c) 2005 Andre Oppermann, Internet Business Solutions AG. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #ifndef _NETINET_IP_OPTIONS_H_ 37 #define _NETINET_IP_OPTIONS_H_ 38 39 struct ipoptrt { 40 struct in_addr dst; /* final destination */ 41 char nop; /* one NOP to align */ 42 char srcopt[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN and OFFSET */ 43 struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)]; 44 }; 45 46 struct ipopt_tag { 47 struct m_tag tag; /* m_tag */ 48 int ip_nhops; 49 struct ipoptrt ip_srcrt; 50 }; 51 52 VNET_DECLARE(int, ip_doopts); /* process or ignore IP options */ 53 #define V_ip_doopts VNET(ip_doopts) 54 55 int ip_checkrouteralert(struct mbuf *); 56 int ip_dooptions(struct mbuf *, int); 57 struct mbuf *ip_insertoptions(struct mbuf *, struct mbuf *, int *); 58 int ip_optcopy(struct ip *, struct ip *); 59 int ip_pcbopts(struct inpcb *, int, struct mbuf *); 60 void ip_stripoptions(struct mbuf *); 61 struct mbuf *ip_srcroute(struct mbuf *); 62 63 #endif /* !_NETINET_IP_OPTIONS_H_ */ 64