[apple/xnu.git] / bsd / net / ndrv.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1997, 1998 Apple Computer, Inc. All Rights Reserved */
/*
 *	@(#)ndrv.h	1.1 (MacOSX) 6/10/43
 * Justin Walker - 970604
 */
#include <net/dlil.h>

#ifndef _NET_NDRV_H
#define _NET_NDRV_H
#include <sys/appleapiopts.h>


struct sockaddr_ndrv
{
    unsigned char snd_len;
	unsigned char snd_family;
	unsigned char snd_name[IFNAMSIZ]; /* from if.h */
};

/*
 * Support for user-mode protocol handlers
 */

#define NDRV_DEMUXTYPE_ETHERTYPE	DLIL_DESC_ETYPE2
#define	NDRV_DEMUXTYPE_SAP			DLIL_DESC_SAP
#define NDRV_DEMUXTYPE_SNAP			DLIL_DESC_SNAP

#define	NDRVPROTO_NDRV				0

/*
 * Struct: ndrv_demux_desc
 * Purpose:
 *   To uniquely identify a packet based on its low-level framing information.
 *
 * Fields:
 *		type		:	type of protocol in data field, must be understood by
 *						the interface family of the interface the socket is bound to
 *		length		: 	length of protocol data in "data" field
 *		data		:	union of framing-specific data, in network byte order
 *		ether_type	:	ethernet type in network byte order, assuming
 *						ethernet type II framing
 *		sap			:	first 3 bytes of sap header, network byte order
 *		snap		:	first 5 bytes of snap header, network byte order
 *		other		:	up to 28 bytes of protocol data for different protocol type
 *
 * Examples:
 * 1) 802.1x uses ether_type 0x888e, so the descriptor would be set as:
 *    struct ndrv_demux_desc desc;
 *    desc.type = NDRV_DEMUXTYPE_ETHERTYPE
 *	  desc.length = sizeof(unsigned short);
 *    desc.ether_type = htons(0x888e);
 * 2) AppleTalk uses SNAP 0x080007809B
 *    struct ndrv_demux_desc desc;
 *    desc.type = NDRV_DEMUXTYPE_SNAP;
 *    desc.length = 5;
 *    desc.data.snap[0] = 08;
 *    desc.data.snap[1] = 00;
 *    desc.data.snap[2] = 07;
 *    desc.data.snap[3] = 80;
 *    desc.data.snap[4] = 9B;
 */
struct ndrv_demux_desc
{
    u_int16_t	type;
    u_int16_t	length;
    union
    {
        u_int16_t	ether_type;
        u_int8_t	sap[3];
        u_int8_t	snap[5];
        u_int8_t	other[28];
    } data;
};

#define NDRV_PROTOCOL_DESC_VERS	1

/*
 * Struct: ndrv_protocol_desc
 * Purpose:
 *   Used to "bind" an NDRV socket so that packets that match
 *   given protocol demux descriptions can be received:
 * Field:
 *		version			:	must be NDRV_PROTOCOL_DESC_VERS
 *		protocol_family	:	unique identifier for this protocol
 *		demux_count		:	number of demux_list descriptors in demux_list
 *		demux_list		:	pointer to array of demux descriptors
 */
struct ndrv_protocol_desc
{
    u_int32_t				version;
    u_int32_t				protocol_family;
    u_int32_t				demux_count;
    struct ndrv_demux_desc*	demux_list;
};

#define SOL_NDRVPROTO		NDRVPROTO_NDRV	/* Use this socket level */
/*		NDRV_DMXSPEC		0x01		   	   Obsolete */
#define NDRV_DELDMXSPEC		0x02			/* Delete the registered protocol */
/*		NDRV_DMXSPECCNT		0x03			   Obsolete */
#define NDRV_SETDMXSPEC		0x04			/* Set the protocol spec */
#define	NDRV_ADDMULTICAST	0x05			/* Add a physical multicast address */
#define NDRV_DELMULTICAST	0x06			/* Delete a phyiscal multicast */

/*
 * SOL_NDRVPROTO - use this for the socket level when calling setsocketopt
 * NDRV_DELDMXSPEC - removes the registered protocol and all related demuxes
 * NDRV_SETDMXSPEC - set the protocol to receive, use struct ndrv_protocol_desc
 *					 as the parameter.
 * NDRV_ADDMULTICAST - Enable reception of a phyiscal multicast address, use
 *                     a sockaddr of the appropriate type for the media in use.
 * NDRV_DELMULTICAST - Disable reception of a phyiscal multicast address, use
 *					   a sockaddr of the appropriate type for the media in use.
 *
 * When adding multicasts, the multicasts are ref counted. If the multicast is
 * already registered in the kernel, the count will be bumped. When deleting
 * the multicast, the count is decremented. If the count reaches zero the
 * multicast is removed. If your process is killed, PF_NDRV will unregister
 * the mulitcasts you've added. You can only delete multicasts you've added
 * on the same socket.
 *
 * If the interface goes away while your socket is open, your protocol is
 * immediately detached and sending/receiving is disabled on the socket.
 * If you need a chance to do something, please file a bug and we can give
 * you a second or two.
 */

#ifdef KERNEL
#ifdef __APPLE_API_UNSTABLE
/* Additional Kernel APIs */
struct ifnet*	ndrv_get_ifp(caddr_t ndrv_pcb);
#endif /* __APPLE_API_UNSTABLE */
#endif

#endif	/* _NET_NDRV_H */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/* Copyright (c) 1997, 1998 Apple Computer, Inc. All Rights Reserved */
	23	/*
	24	* @(#)ndrv.h 1.1 (MacOSX) 6/10/43
	25	* Justin Walker - 970604
	26	*/
7b1edb79	27	#include <net/dlil.h>
1c79356b A	28
	29	#ifndef _NET_NDRV_H
	30	#define _NET_NDRV_H
9bccf70c	31	#include <sys/appleapiopts.h>
1c79356b	32
7b1edb79	33
1c79356b	34	struct sockaddr_ndrv
7b1edb79 A	35	{
7b1edb79 A	36	unsigned char snd_len;
1c79356b A	37	unsigned char snd_family;
	38	unsigned char snd_name[IFNAMSIZ]; /* from if.h */
	39	};
	40
	41	/*
7b1edb79	42	* Support for user-mode protocol handlers
1c79356b	43	*/
1c79356b	44
7b1edb79 A	45	#define NDRV_DEMUXTYPE_ETHERTYPE DLIL_DESC_ETYPE2
	46	#define NDRV_DEMUXTYPE_SAP DLIL_DESC_SAP
	47	#define NDRV_DEMUXTYPE_SNAP DLIL_DESC_SNAP
1c79356b	48
7b1edb79	49	#define NDRVPROTO_NDRV 0
1c79356b A	50
1c79356b A	51	/*
7b1edb79 A	52	* Struct: ndrv_demux_desc
	53	* Purpose:
	54	* To uniquely identify a packet based on its low-level framing information.
	55	*
	56	* Fields:
	57	* type : type of protocol in data field, must be understood by
	58	* the interface family of the interface the socket is bound to
	59	* length : length of protocol data in "data" field
	60	* data : union of framing-specific data, in network byte order
	61	* ether_type : ethernet type in network byte order, assuming
	62	* ethernet type II framing
	63	* sap : first 3 bytes of sap header, network byte order
	64	* snap : first 5 bytes of snap header, network byte order
	65	* other : up to 28 bytes of protocol data for different protocol type
	66	*
	67	* Examples:
	68	* 1) 802.1x uses ether_type 0x888e, so the descriptor would be set as:
	69	* struct ndrv_demux_desc desc;
	70	* desc.type = NDRV_DEMUXTYPE_ETHERTYPE
	71	* desc.length = sizeof(unsigned short);
	72	* desc.ether_type = htons(0x888e);
	73	* 2) AppleTalk uses SNAP 0x080007809B
	74	* struct ndrv_demux_desc desc;
	75	* desc.type = NDRV_DEMUXTYPE_SNAP;
	76	* desc.length = 5;
	77	* desc.data.snap[0] = 08;
	78	* desc.data.snap[1] = 00;
	79	* desc.data.snap[2] = 07;
	80	* desc.data.snap[3] = 80;
	81	* desc.data.snap[4] = 9B;
1c79356b	82	*/
7b1edb79 A	83	struct ndrv_demux_desc
	84	{
	85	u_int16_t type;
	86	u_int16_t length;
	87	union
	88	{
	89	u_int16_t ether_type;
	90	u_int8_t sap[3];
	91	u_int8_t snap[5];
	92	u_int8_t other[28];
	93	} data;
	94	};
	95
	96	#define NDRV_PROTOCOL_DESC_VERS 1
1c79356b	97
7b1edb79 A	98	/*
	99	* Struct: ndrv_protocol_desc
	100	* Purpose:
	101	* Used to "bind" an NDRV socket so that packets that match
	102	* given protocol demux descriptions can be received:
	103	* Field:
	104	* version : must be NDRV_PROTOCOL_DESC_VERS
	105	* protocol_family : unique identifier for this protocol
	106	* demux_count : number of demux_list descriptors in demux_list
	107	* demux_list : pointer to array of demux descriptors
	108	*/
	109	struct ndrv_protocol_desc
	110	{
	111	u_int32_t version;
	112	u_int32_t protocol_family;
	113	u_int32_t demux_count;
	114	struct ndrv_demux_desc* demux_list;
1c79356b A	115	};
1c79356b A	116
7b1edb79 A	117	#define SOL_NDRVPROTO NDRVPROTO_NDRV /* Use this socket level */
	118	/* NDRV_DMXSPEC 0x01 Obsolete */
	119	#define NDRV_DELDMXSPEC 0x02 /* Delete the registered protocol */
	120	/* NDRV_DMXSPECCNT 0x03 Obsolete */
	121	#define NDRV_SETDMXSPEC 0x04 /* Set the protocol spec */
9bccf70c A	122	#define NDRV_ADDMULTICAST 0x05 /* Add a physical multicast address */
9bccf70c A	123	#define NDRV_DELMULTICAST 0x06 /* Delete a phyiscal multicast */
1c79356b	124
9bccf70c A	125	/*
	126	* SOL_NDRVPROTO - use this for the socket level when calling setsocketopt
	127	* NDRV_DELDMXSPEC - removes the registered protocol and all related demuxes
	128	* NDRV_SETDMXSPEC - set the protocol to receive, use struct ndrv_protocol_desc
	129	* as the parameter.
	130	* NDRV_ADDMULTICAST - Enable reception of a phyiscal multicast address, use
	131	* a sockaddr of the appropriate type for the media in use.
	132	* NDRV_DELMULTICAST - Disable reception of a phyiscal multicast address, use
	133	* a sockaddr of the appropriate type for the media in use.
	134	*
	135	* When adding multicasts, the multicasts are ref counted. If the multicast is
	136	* already registered in the kernel, the count will be bumped. When deleting
	137	* the multicast, the count is decremented. If the count reaches zero the
	138	* multicast is removed. If your process is killed, PF_NDRV will unregister
	139	* the mulitcasts you've added. You can only delete multicasts you've added
	140	* on the same socket.
	141	*
	142	* If the interface goes away while your socket is open, your protocol is
	143	* immediately detached and sending/receiving is disabled on the socket.
	144	* If you need a chance to do something, please file a bug and we can give
	145	* you a second or two.
	146	*/
	147
	148	#ifdef KERNEL
	149	#ifdef __APPLE_API_UNSTABLE
7b1edb79 A	150	/* Additional Kernel APIs */
7b1edb79 A	151	struct ifnet* ndrv_get_ifp(caddr_t ndrv_pcb);
9bccf70c	152	#endif /* __APPLE_API_UNSTABLE */
1c79356b	153	#endif
7b1edb79	154
1c79356b	155	#endif /* _NET_NDRV_H */