1 /*-
2 * Copyright (c) 2003 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 * redistribution must be conditioned upon including a substantially
14 * similar Disclaimer requirement for further binary redistribution.
15 * 3. Neither the names of the above-listed copyright holders nor the names
16 * of any contributors may be used to endorse or promote products derived
17 * from this software without specific prior written permission.
18 *
19 * NO WARRANTY
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
24 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
28 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGES.
31 *
32 * $FreeBSD: src/sys/netinet/ip_divert.h,v 1.4 2004/10/19 21:14:57 andre Exp $
33 */
34
35 #ifndef _NETINET_IP_DIVERT_H_
36 #define _NETINET_IP_DIVERT_H_
37
38 /*
39 * Sysctl declaration.
40 */
41 #ifdef SYSCTL_DECL
42 SYSCTL_DECL(_net_inet_divert);
43 #endif
44
45 /*
46 * Divert socket definitions.
47 */
48 struct divert_tag {
49 u_int32_t info; /* port & flags */
50 u_int16_t cookie; /* ipfw rule number */
51 };
52
53 /*
54 * Return the divert cookie associated with the mbuf; if any.
55 */
56 static __inline u_int16_t
57 divert_cookie(struct m_tag *mtag)
58 {
59 return ((struct divert_tag *)(mtag+1))->cookie;
60 }
61 static __inline u_int16_t
62 divert_find_cookie(struct mbuf *m)
63 {
64 struct m_tag *mtag = m_tag_find(m, PACKET_TAG_DIVERT, NULL);
65 return mtag ? divert_cookie(mtag) : 0;
66 }
67
68 /*
69 * Return the divert info associated with the mbuf; if any.
70 */
71 static __inline u_int32_t
72 divert_info(struct m_tag *mtag)
73 {
74 return ((struct divert_tag *)(mtag+1))->info;
75 }
76 static __inline u_int32_t
77 divert_find_info(struct mbuf *m)
78 {
79 struct m_tag *mtag = m_tag_find(m, PACKET_TAG_DIVERT, NULL);
80 return mtag ? divert_info(mtag) : 0;
81 }
82
83 typedef void ip_divert_packet_t(struct mbuf *m, int incoming);
84 extern ip_divert_packet_t *ip_divert_ptr;
85
86 extern void div_init(void);
87 extern void div_input(struct mbuf *, int);
88 extern void div_ctlinput(int, struct sockaddr *, void *);
89 #endif /* _NETINET_IP_DIVERT_H_ */
90
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