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: releng/10.4/sys/netinet/ip_options.h 272868 2014-10-09 23:45:26Z hrs $
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 VNET_DECLARE(int, ip_doopts); /* process or ignore IP options */
51 #define V_ip_doopts VNET(ip_doopts)
52
53 int ip_checkrouteralert(struct mbuf *);
54 int ip_dooptions(struct mbuf *, int);
55 struct mbuf *ip_insertoptions(struct mbuf *, struct mbuf *, int *);
56 int ip_optcopy(struct ip *, struct ip *);
57 int ip_pcbopts(struct inpcb *, int, struct mbuf *);
58 void ip_stripoptions(struct mbuf *);
59 struct mbuf *ip_srcroute(struct mbuf *);
60
61 #endif /* !_NETINET_IP_OPTIONS_H_ */
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