ip_divert.h revision 126239
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: head/sys/netinet/ip_divert.h 126239 2004-02-25 19:55:29Z mlaier $ 33 */ 34 35#ifndef _NETINET_IP_DIVERT_H_ 36#define _NETINET_IP_DIVERT_H_ 37 38/* 39 * Divert socket definitions. 40 */ 41 42struct divert_tag { 43 u_int32_t info; /* port & flags */ 44 u_int16_t cookie; /* ipfw rule number */ 45}; 46 47/* 48 * Return the divert cookie associated with the mbuf; if any. 49 */ 50static __inline u_int16_t 51divert_cookie(struct m_tag *mtag) 52{ 53 return ((struct divert_tag *)(mtag+1))->cookie; 54} 55static __inline u_int16_t 56divert_find_cookie(struct mbuf *m) 57{ 58 struct m_tag *mtag = m_tag_find(m, PACKET_TAG_DIVERT, NULL); 59 return mtag ? divert_cookie(mtag) : 0; 60} 61 62/* 63 * Return the divert info associated with the mbuf; if any. 64 */ 65static __inline u_int32_t 66divert_info(struct m_tag *mtag) 67{ 68 return ((struct divert_tag *)(mtag+1))->info; 69} 70static __inline u_int32_t 71divert_find_info(struct mbuf *m) 72{ 73 struct m_tag *mtag = m_tag_find(m, PACKET_TAG_DIVERT, NULL); 74 return mtag ? divert_info(mtag) : 0; 75} 76 77extern void div_init(void); 78extern void div_input(struct mbuf *, int); 79extern void div_ctlinput(int, struct sockaddr *, void *); 80extern void divert_packet(struct mbuf *m, int incoming); 81extern struct mbuf *divert_clone(struct mbuf *); 82extern struct pr_usrreqs div_usrreqs; 83#endif /* _NETINET_IP_DIVERT_H_ */ 84