[apple/xnu.git] / bsd / netinet / ip_divert.h

/*
 * Copyright (c) 2008 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*-
 * Copyright (c) 2003 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 *
 * $FreeBSD: src/sys/netinet/ip_divert.h,v 1.3 2004/02/25 19:55:28 mlaier Exp $
 */

#ifndef _NETINET_IP_DIVERT_H_
#define	_NETINET_IP_DIVERT_H_

#if IPDIVERT
/*
 * Divert socket definitions.
 */

/* 32-bit unique unsigned value used to identify a module */

struct divert_tag {
	u_int32_t	info;		/* port & flags */
	u_int16_t	cookie;		/* ipfw rule number */
};

/*
 * Return the divert cookie associated with the mbuf; if any.
 */
static __inline u_int16_t
divert_cookie(struct m_tag *mtag)
{
	return ((struct divert_tag *)(mtag+1))->cookie;
}
static __inline u_int16_t
divert_find_cookie(struct mbuf *m)
{
	struct m_tag *mtag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
									  KERNEL_TAG_TYPE_DIVERT, NULL);
	return mtag ? divert_cookie(mtag) : 0;
}

/*
 * Return the divert info associated with the mbuf; if any.
 */
static __inline u_int32_t
divert_info(struct m_tag *mtag)
{
	return ((struct divert_tag *)(mtag+1))->info;
}
static __inline u_int32_t
divert_find_info(struct mbuf *m)
{
	struct m_tag *mtag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
									  KERNEL_TAG_TYPE_DIVERT, NULL);
	return mtag ? divert_info(mtag) : 0;
}

extern	void div_init(void) __attribute__((section("__TEXT, initcode")));
extern	void div_input(struct mbuf *, int);
lck_mtx_t * 
        div_getlock(struct socket *,  int );
int	div_unlock(struct socket *, int, void *);
int     div_lock(struct socket *, int , void *);
extern	void divert_packet(struct mbuf *m, int incoming, int port, int rule);
extern struct pr_usrreqs div_usrreqs;

#endif /* IPDIVERT */
#endif /* _NETINET_IP_DIVERT_H_ */
Commit	Line	Data
b0d623f7 A	1	/*
	2	* Copyright (c) 2008 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
91447636 A	29	/*-
	30	* Copyright (c) 2003 Sam Leffler, Errno Consulting
	31	* All rights reserved.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer,
	38	* without modification.
	39	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	40	* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
	41	* redistribution must be conditioned upon including a substantially
	42	* similar Disclaimer requirement for further binary redistribution.
	43	* 3. Neither the names of the above-listed copyright holders nor the names
	44	* of any contributors may be used to endorse or promote products derived
	45	* from this software without specific prior written permission.
	46	*
	47	* NO WARRANTY
	48	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	49	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	50	* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
	51	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
	52	* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
	53	* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	54	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	55	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
	56	* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	57	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	58	* THE POSSIBILITY OF SUCH DAMAGES.
	59	*
	60	* $FreeBSD: src/sys/netinet/ip_divert.h,v 1.3 2004/02/25 19:55:28 mlaier Exp $
	61	*/
	62
	63	#ifndef _NETINET_IP_DIVERT_H_
	64	#define _NETINET_IP_DIVERT_H_
	65
	66	#if IPDIVERT
	67	/*
	68	* Divert socket definitions.
	69	*/
	70
	71	/* 32-bit unique unsigned value used to identify a module */
	72
	73	struct divert_tag {
	74	u_int32_t info; /* port & flags */
	75	u_int16_t cookie; /* ipfw rule number */
	76	};
	77
	78	/*
	79	* Return the divert cookie associated with the mbuf; if any.
	80	*/
	81	static __inline u_int16_t
	82	divert_cookie(struct m_tag *mtag)
	83	{
	84	return ((struct divert_tag *)(mtag+1))->cookie;
	85	}
	86	static __inline u_int16_t
	87	divert_find_cookie(struct mbuf *m)
	88	{
	89	struct m_tag *mtag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
	90	KERNEL_TAG_TYPE_DIVERT, NULL);
	91	return mtag ? divert_cookie(mtag) : 0;
	92	}
93
94	/*
95	* Return the divert info associated with the mbuf; if any.
96	*/
97	static __inline u_int32_t
98	divert_info(struct m_tag *mtag)
99	{
100	return ((struct divert_tag *)(mtag+1))->info;
101	}
102	static __inline u_int32_t
103	divert_find_info(struct mbuf *m)
104	{
105	struct m_tag *mtag = m_tag_locate(m, KERNEL_MODULE_TAG_ID,
106	KERNEL_TAG_TYPE_DIVERT, NULL);
107	return mtag ? divert_info(mtag) : 0;
108	}
109
2d21ac55	110	extern void div_init(void) __attribute__((section("__TEXT, initcode")));
91447636 A	111	extern void div_input(struct mbuf *, int);
	112	lck_mtx_t *
	113	div_getlock(struct socket *, int );
b0d623f7 A	114	int div_unlock(struct socket , int, void );
b0d623f7 A	115	int div_lock(struct socket , int , void );
91447636 A	116	extern void divert_packet(struct mbuf *m, int incoming, int port, int rule);
	117	extern struct pr_usrreqs div_usrreqs;
	118
	119	#endif /* IPDIVERT */
	120	#endif /* _NETINET_IP_DIVERT_H_ */