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annotate packages/net/tcpip/current/include/netinet/if_ether.h @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // include/netinet/if_ether.h
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4 //
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5 //
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6 //
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7 //==========================================================================
2729
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8 // ####BSDALTCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // Portions of this software may have been derived from OpenBSD
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11 // or other sources, and if so are covered by the appropriate copyright
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12 // and license included herein.
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13 // -------------------------------------------
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14 // ####BSDALTCOPYRIGHTEND####
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15 //==========================================================================
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16 //#####DESCRIPTIONBEGIN####
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17 //
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18 // Author(s): gthomas
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19 // Contributors: gthomas
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20 // Date: 2000-01-10
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21 // Purpose:
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22 // Description:
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23 //
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24 //
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25 //####DESCRIPTIONEND####
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26 //
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27 //==========================================================================
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28
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29
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30 /* $OpenBSD: if_ether.h,v 1.10 1999/12/08 06:50:19 itojun Exp $ */
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31 /* $NetBSD: if_ether.h,v 1.22 1996/05/11 13:00:00 mycroft Exp $ */
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32
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33 /*
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34 * Copyright (c) 1982, 1986, 1993
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35 * The Regents of the University of California. All rights reserved.
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36 *
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37 * Redistribution and use in source and binary forms, with or without
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38 * modification, are permitted provided that the following conditions
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39 * are met:
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40 * 1. Redistributions of source code must retain the above copyright
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41 * notice, this list of conditions and the following disclaimer.
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42 * 2. Redistributions in binary form must reproduce the above copyright
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43 * notice, this list of conditions and the following disclaimer in the
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44 * documentation and/or other materials provided with the distribution.
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45 * 3. All advertising materials mentioning features or use of this software
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46 * must display the following acknowledgement:
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47 * This product includes software developed by the University of
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48 * California, Berkeley and its contributors.
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49 * 4. Neither the name of the University nor the names of its contributors
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50 * may be used to endorse or promote products derived from this software
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51 * without specific prior written permission.
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52 *
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53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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63 * SUCH DAMAGE.
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64 *
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65 * @(#)if_ether.h 8.1 (Berkeley) 6/10/93
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66 */
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67
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68 #ifndef _NETINET_IF_ETHER_H_
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69 #define _NETINET_IF_ETHER_H_
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70
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71 /*
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72 * Ethernet address - 6 octets
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73 * this is only used by the ethers(3) functions.
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74 */
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75 struct ether_addr {
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76 u_int8_t ether_addr_octet[6];
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77 } __attribute__ ((aligned(1), packed));
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78
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79 /*
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80 * Structure of a Ethernet header.
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81 */
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82 #define ETHER_ADDR_LEN 6
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83
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84 struct ether_header {
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85 u_int8_t ether_dhost[ETHER_ADDR_LEN];
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86 u_int8_t ether_shost[ETHER_ADDR_LEN];
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87 u_int16_t ether_type;
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88 } __attribute__ ((aligned(1), packed));
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89
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90 #define ETHERTYPE_PUP 0x0200 /* PUP protocol */
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91 #define ETHERTYPE_IP 0x0800 /* IP protocol */
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92 #define ETHERTYPE_ARP 0x0806 /* address resolution protocol */
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93 #define ETHERTYPE_REVARP 0x8035 /* reverse addr resolution protocol */
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94 #define ETHERTYPE_IPV6 0x86DD /* IPv6 protocol */
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95
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96 /*
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97 * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
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98 * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
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99 * by an ETHER type (as given above) and then the (variable-length) header.
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100 */
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101 #define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
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102 #define ETHERTYPE_NTRAILER 16
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103
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104 #define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */
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105
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106 #define ETHERMTU 1500
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107 #define ETHERMIN (60-14)
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108
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109 #ifdef _KERNEL
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110 /*
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111 * Macro to map an IP multicast address to an Ethernet multicast address.
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112 * The high-order 25 bits of the Ethernet address are statically assigned,
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113 * and the low-order 23 bits are taken from the low end of the IP address.
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114 */
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115 #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
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116 /* struct in_addr *ipaddr; */ \
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117 /* u_int8_t enaddr[ETHER_ADDR_LEN]; */ \
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118 { \
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119 (enaddr)[0] = 0x01; \
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120 (enaddr)[1] = 0x00; \
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121 (enaddr)[2] = 0x5e; \
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122 (enaddr)[3] = ((u_int8_t *)ipaddr)[1] & 0x7f; \
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123 (enaddr)[4] = ((u_int8_t *)ipaddr)[2]; \
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124 (enaddr)[5] = ((u_int8_t *)ipaddr)[3]; \
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125 }
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126
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127 /*
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128 * Macro to map an IPv6 multicast address to an Ethernet multicast address.
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129 * The high-order 16 bits of the Ethernet address are statically assigned,
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130 * and the low-order 32 bits are taken from the low end of the IPv6 address.
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131 */
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132 #define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \
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133 /* struct in6_addr *ip6addr; */ \
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134 /* u_int8_t enaddr[ETHER_ADDR_LEN]; */ \
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135 { \
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136 (enaddr)[0] = 0x33; \
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137 (enaddr)[1] = 0x33; \
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138 (enaddr)[2] = ((u_int8_t *)ip6addr)[12]; \
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139 (enaddr)[3] = ((u_int8_t *)ip6addr)[13]; \
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140 (enaddr)[4] = ((u_int8_t *)ip6addr)[14]; \
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141 (enaddr)[5] = ((u_int8_t *)ip6addr)[15]; \
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142 }
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143 #endif
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144
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145 /*
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146 * Ethernet Address Resolution Protocol.
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147 *
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148 * See RFC 826 for protocol description. Structure below is adapted
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149 * to resolving internet addresses. Field names used correspond to
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150 * RFC 826.
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151 */
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152 struct ether_arp {
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153 struct arphdr ea_hdr; /* fixed-size header */
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154 u_int8_t arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */
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155 u_int8_t arp_spa[4]; /* sender protocol address */
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156 u_int8_t arp_tha[ETHER_ADDR_LEN]; /* target hardware address */
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157 u_int8_t arp_tpa[4]; /* target protocol address */
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158 };
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159 #define arp_hrd ea_hdr.ar_hrd
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160 #define arp_pro ea_hdr.ar_pro
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161 #define arp_hln ea_hdr.ar_hln
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162 #define arp_pln ea_hdr.ar_pln
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163 #define arp_op ea_hdr.ar_op
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164
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165 /*
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166 * Structure shared between the ethernet driver modules and
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167 * the address resolution code. For example, each ec_softc or il_softc
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168 * begins with this structure.
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169 */
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170 struct arpcom {
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171 struct ifnet ac_if; /* network-visible interface */
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172 u_int8_t ac_enaddr[ETHER_ADDR_LEN]; /* ethernet hardware address */
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173 char ac__pad[2]; /* pad for some machines */
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174 LIST_HEAD(, ether_multi) ac_multiaddrs; /* list of ether multicast addrs */
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175 int ac_multicnt; /* length of ac_multiaddrs list */
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176 };
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177
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178 struct llinfo_arp {
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179 LIST_ENTRY(llinfo_arp) la_list;
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180 struct rtentry *la_rt;
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181 struct mbuf *la_hold; /* last packet until resolved/timeout */
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182 long la_asked; /* last time we QUERIED for this addr */
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183 #define la_timer la_rt->rt_rmx.rmx_expire /* deletion time in seconds */
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184 };
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185
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186 struct sockaddr_inarp {
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187 u_int8_t sin_len;
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188 u_int8_t sin_family;
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189 u_int16_t sin_port;
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190 struct in_addr sin_addr;
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191 struct in_addr sin_srcaddr;
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192 u_int16_t sin_tos;
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193 u_int16_t sin_other;
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194 #define SIN_PROXY 1
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195 };
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196
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197 /*
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198 * IP and ethernet specific routing flags
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199 */
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200 #define RTF_USETRAILERS RTF_PROTO1 /* use trailers */
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201 #define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */
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202 #define RTF_PERMANENT_ARP RTF_PROTO3 /* only manual overwrite of entry */
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203
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204 #ifdef _KERNEL
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205 extern u_int8_t etherbroadcastaddr[ETHER_ADDR_LEN];
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206 extern u_int8_t ether_ipmulticast_min[ETHER_ADDR_LEN];
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207 extern u_int8_t ether_ipmulticast_max[ETHER_ADDR_LEN];
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208 extern struct ifqueue arpintrq;
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209
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210 void arpwhohas __P((struct arpcom *, struct in_addr *));
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211 void arpintr __P((void));
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212 int arpresolve __P((struct arpcom *,
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213 struct rtentry *, struct mbuf *, struct sockaddr *, u_char *));
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214 void arp_ifinit __P((struct arpcom *, struct ifaddr *));
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215 void arp_rtrequest __P((int, struct rtentry *, struct sockaddr *));
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216
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217 int ether_addmulti __P((struct ifreq *, struct arpcom *));
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218 int ether_delmulti __P((struct ifreq *, struct arpcom *));
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219 #endif /* _KERNEL */
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220
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221 /*
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222 * Ethernet multicast address structure. There is one of these for each
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223 * multicast address or range of multicast addresses that we are supposed
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224 * to listen to on a particular interface. They are kept in a linked list,
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225 * rooted in the interface's arpcom structure. (This really has nothing to
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226 * do with ARP, or with the Internet address family, but this appears to be
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227 * the minimally-disrupting place to put it.)
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228 */
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229 struct ether_multi {
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230 u_int8_t enm_addrlo[ETHER_ADDR_LEN]; /* low or only address of range */
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231 u_int8_t enm_addrhi[ETHER_ADDR_LEN]; /* high or only address of range */
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232 struct arpcom *enm_ac; /* back pointer to arpcom */
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233 u_int enm_refcount; /* no. claims to this addr/range */
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234 LIST_ENTRY(ether_multi) enm_list;
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235 };
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236
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237 /*
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238 * Structure used by macros below to remember position when stepping through
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239 * all of the ether_multi records.
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240 */
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241 struct ether_multistep {
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242 struct ether_multi *e_enm;
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243 };
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244
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245 /*
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246 * Macro for looking up the ether_multi record for a given range of Ethernet
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247 * multicast addresses connected to a given arpcom structure. If no matching
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248 * record is found, "enm" returns NULL.
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249 */
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250 #define ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm) \
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251 /* u_int8_t addrlo[ETHER_ADDR_LEN]; */ \
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252 /* u_int8_t addrhi[ETHER_ADDR_LEN]; */ \
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253 /* struct arpcom *ac; */ \
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254 /* struct ether_multi *enm; */ \
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255 { \
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256 for ((enm) = (ac)->ac_multiaddrs.lh_first; \
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257 (enm) != NULL && \
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258 (bcmp((enm)->enm_addrlo, (addrlo), ETHER_ADDR_LEN) != 0 || \
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259 bcmp((enm)->enm_addrhi, (addrhi), ETHER_ADDR_LEN) != 0); \
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260 (enm) = (enm)->enm_list.le_next); \
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261 }
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262
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263 /*
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264 * Macro to step through all of the ether_multi records, one at a time.
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265 * The current position is remembered in "step", which the caller must
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266 * provide. ETHER_FIRST_MULTI(), below, must be called to initialize "step"
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267 * and get the first record. Both macros return a NULL "enm" when there
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268 * are no remaining records.
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269 */
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270 #define ETHER_NEXT_MULTI(step, enm) \
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271 /* struct ether_multistep step; */ \
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272 /* struct ether_multi *enm; */ \
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273 { \
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274 if (((enm) = (step).e_enm) != NULL) \
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275 (step).e_enm = (enm)->enm_list.le_next; \
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276 }
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277
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278 #define ETHER_FIRST_MULTI(step, ac, enm) \
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279 /* struct ether_multistep step; */ \
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280 /* struct arpcom *ac; */ \
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281 /* struct ether_multi *enm; */ \
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282 { \
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283 (step).e_enm = (ac)->ac_multiaddrs.lh_first; \
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284 ETHER_NEXT_MULTI((step), (enm)); \
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285 }
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286
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287 #ifdef _KERNEL
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288
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289 extern struct ifnet *myip_ifp;
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290
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291 void arp_rtrequest __P((int, struct rtentry *, struct sockaddr *));
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292 int arpresolve __P((struct arpcom *, struct rtentry *, struct mbuf *,
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293 struct sockaddr *, u_char *));
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294 void arpintr __P((void));
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295 int arpioctl __P((u_long, caddr_t));
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296 void arp_ifinit __P((struct arpcom *, struct ifaddr *));
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297 void revarpinput __P((struct mbuf *));
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298 void in_revarpinput __P((struct mbuf *));
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299 void revarprequest __P((struct ifnet *));
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300 int revarpwhoarewe __P((struct ifnet *, struct in_addr *, struct in_addr *));
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301 int revarpwhoami __P((struct in_addr *, struct ifnet *));
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302 int db_show_arptab __P((void));
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303
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304 #else
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305
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306 char *ether_ntoa __P((struct ether_addr *));
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307 struct ether_addr *ether_aton __P((char *));
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308 int ether_ntohost __P((char *, struct ether_addr *));
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309 int ether_hostton __P((char *, struct ether_addr *));
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310 int ether_line __P((char *, struct ether_addr *, char *));
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311
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312 #endif // _KERNEL
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313
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314 #endif // _NETINET_IF_ETHER_H_