179 lines
6.5 KiB
C
179 lines
6.5 KiB
C
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/*
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* Copyright (c) 2008 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/* Copyright (c) 1997, 1998 Apple Computer, Inc. All Rights Reserved */
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/*
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* @(#)ndrv.h 1.1 (MacOSX) 6/10/43
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* Justin Walker - 970604
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*/
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#include <net/dlil.h>
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#ifndef _NET_NDRV_H
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#define _NET_NDRV_H
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#include <net/if_var.h>
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#include <sys/appleapiopts.h>
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#include <sys/types.h>
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struct sockaddr_ndrv {
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unsigned char snd_len;
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unsigned char snd_family;
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unsigned char snd_name[IFNAMSIZ]; /* from if.h */
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};
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/*
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* Support for user-mode protocol handlers
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*/
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#define NDRV_DEMUXTYPE_ETHERTYPE 4
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#define NDRV_DEMUXTYPE_SAP 5
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#define NDRV_DEMUXTYPE_SNAP 6
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#define NDRVPROTO_NDRV 0
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/*
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* Struct: ndrv_demux_desc
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* Purpose:
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* To uniquely identify a packet based on its low-level framing information.
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*
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* Fields:
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* type : type of protocol in data field, must be understood by
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* the interface family of the interface the socket is bound to
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* length : length of protocol data in "data" field
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* data : union of framing-specific data, in network byte order
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* ether_type : ethernet type in network byte order, assuming
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* ethernet type II framing
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* sap : first 3 bytes of sap header, network byte order
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* snap : first 5 bytes of snap header, network byte order
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* other : up to 28 bytes of protocol data for different protocol type
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*
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* Examples:
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* 1) 802.1x uses ether_type 0x888e, so the descriptor would be set as:
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* struct ndrv_demux_desc desc;
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* desc.type = NDRV_DEMUXTYPE_ETHERTYPE
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* desc.length = sizeof(unsigned short);
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* desc.ether_type = htons(0x888e);
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* 2) AppleTalk uses SNAP 0x080007809B
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* struct ndrv_demux_desc desc;
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* desc.type = NDRV_DEMUXTYPE_SNAP;
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* desc.length = 5;
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* desc.data.snap[0] = 08;
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* desc.data.snap[1] = 00;
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* desc.data.snap[2] = 07;
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* desc.data.snap[3] = 80;
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* desc.data.snap[4] = 9B;
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*/
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struct ndrv_demux_desc {
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u_int16_t type;
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u_int16_t length;
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union{
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u_int16_t ether_type;
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u_int8_t sap[3];
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u_int8_t snap[5];
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u_int8_t other[28];
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} data;
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};
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#define NDRV_PROTOCOL_DESC_VERS 1
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/*
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* Struct: ndrv_protocol_desc
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* Purpose:
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* Used to "bind" an NDRV socket so that packets that match
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* given protocol demux descriptions can be received:
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* Field:
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* version : must be NDRV_PROTOCOL_DESC_VERS
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* protocol_family : unique identifier for this protocol
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* demux_count : number of demux_list descriptors in demux_list; maximum of 10
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* demux_list : pointer to array of demux descriptors
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*/
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struct ndrv_protocol_desc {
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u_int32_t version;
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u_int32_t protocol_family;
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u_int32_t demux_count;
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struct ndrv_demux_desc *demux_list;
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};
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#ifdef KERNEL_PRIVATE
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/* LP64 version of ndrv_protocol_desc. all pointers
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* grow when we're dealing with a 64-bit process.
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* WARNING - keep in sync with ndrv_protocol_desc
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*/
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struct ndrv_protocol_desc64 {
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u_int32_t version;
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u_int32_t protocol_family;
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u_int32_t demux_count;
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user64_addr_t demux_list __attribute__((aligned(8)));
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};
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struct ndrv_protocol_desc32 {
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u_int32_t version;
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u_int32_t protocol_family;
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u_int32_t demux_count;
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user32_addr_t demux_list;
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};
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#endif /* KERNEL_PRIVATE */
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#define SOL_NDRVPROTO NDRVPROTO_NDRV /* Use this socket level */
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#define NDRV_DELDMXSPEC 0x02 /* Delete the registered protocol */
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#define NDRV_SETDMXSPEC 0x04 /* Set the protocol spec */
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#define NDRV_ADDMULTICAST 0x05 /* Add a physical multicast address */
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#define NDRV_DELMULTICAST 0x06 /* Delete a phyiscal multicast */
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/*
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* SOL_NDRVPROTO - use this for the socket level when calling setsocketopt
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* NDRV_DELDMXSPEC - removes the registered protocol and all related demuxes
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* NDRV_SETDMXSPEC - set the protocol to receive, use struct ndrv_protocol_desc
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* as the parameter.
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* NDRV_ADDMULTICAST - Enable reception of a phyiscal multicast address, use
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* a sockaddr of the appropriate type for the media in use.
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* NDRV_DELMULTICAST - Disable reception of a phyiscal multicast address, use
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* a sockaddr of the appropriate type for the media in use.
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*
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* When adding multicasts, the multicasts are ref counted. If the multicast is
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* already registered in the kernel, the count will be bumped. When deleting
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* the multicast, the count is decremented. If the count reaches zero the
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* multicast is removed. If your process is killed, PF_NDRV will unregister
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* the mulitcasts you've added. You can only delete multicasts you've added
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* on the same socket.
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*
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* If the interface goes away while your socket is open, your protocol is
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* immediately detached and sending/receiving is disabled on the socket.
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* If you need a chance to do something, please file a bug and we can give
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* you a second or two.
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*/
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/* Max number of descriptions allowed by default */
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#define NDRV_DMUX_MAX_DESCR 1024
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/*
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* sysctl MIB tags at the kern.ipc.nrdv level
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*/
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#define NRDV_MULTICAST_ADDRS_PER_SOCK 1 /* to toggle NDRV_DMUX_MAX_DESCR value */
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#endif /* _NET_NDRV_H */
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