1/* 2 * Copyright (c) 2000-2011 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/* 29 * Copyright (c) 1990, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)if_dl.h 8.1 (Berkeley) 6/10/93 61 * $FreeBSD: src/sys/net/if_dl.h,v 1.10 2000/03/01 02:46:25 archie Exp $ 62 */ 63 64#ifndef _NET_IF_DL_H_ 65#define _NET_IF_DL_H_ 66#include <sys/appleapiopts.h> 67 68/* 69 * A Link-Level Sockaddr may specify the interface in one of two 70 * ways: either by means of a system-provided index number (computed 71 * anew and possibly differently on every reboot), or by a human-readable 72 * string such as "il0" (for managerial convenience). 73 * 74 * Census taking actions, such as something akin to SIOCGCONF would return 75 * both the index and the human name. 76 * 77 * High volume transactions (such as giving a link-level ``from'' address 78 * in a recvfrom or recvmsg call) may be likely only to provide the indexed 79 * form, (which requires fewer copy operations and less space). 80 * 81 * The form and interpretation of the link-level address is purely a matter 82 * of convention between the device driver and its consumers; however, it is 83 * expected that all drivers for an interface of a given if_type will agree. 84 */ 85 86/* 87 * Structure of a Link-Level sockaddr: 88 */ 89struct sockaddr_dl { 90 u_char sdl_len; /* Total length of sockaddr */ 91 u_char sdl_family; /* AF_LINK */ 92 u_short sdl_index; /* if != 0, system given index for interface */ 93 u_char sdl_type; /* interface type */ 94 u_char sdl_nlen; /* interface name length, no trailing 0 reqd. */ 95 u_char sdl_alen; /* link level address length */ 96 u_char sdl_slen; /* link layer selector length */ 97 char sdl_data[12]; /* minimum work area, can be larger; 98 contains both if name and ll address */ 99#ifndef __APPLE__ 100 /* For TokenRing */ 101 u_short sdl_rcf; /* source routing control */ 102 u_short sdl_route[16]; /* source routing information */ 103#endif 104}; 105 106#define LLADDR(s) ((caddr_t)((s)->sdl_data + (s)->sdl_nlen)) 107#ifdef KERNEL_PRIVATE 108#define CONST_LLADDR(s) ((const u_char*)((s)->sdl_data + (s)->sdl_nlen)) 109#endif 110 111#ifdef BSD_KERNEL_PRIVATE 112#define SDL(s) ((struct sockaddr_dl *)(void *)s) 113#endif 114 115#ifndef KERNEL 116 117#include <sys/cdefs.h> 118 119__BEGIN_DECLS 120void link_addr(const char *, struct sockaddr_dl *); 121char *link_ntoa(const struct sockaddr_dl *); 122__END_DECLS 123 124#endif /* !KERNEL */ 125 126#endif 127