1 | /* |
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2 | * Copyright (c) 1982, 1986, 1990, 1993 |
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3 | * The Regents of the University of California. All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * 3. All advertising materials mentioning features or use of this software |
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14 | * must display the following acknowledgement: |
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15 | * This product includes software developed by the University of |
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16 | * California, Berkeley and its contributors. |
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17 | * 4. Neither the name of the University nor the names of its contributors |
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18 | * may be used to endorse or promote products derived from this software |
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19 | * without specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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31 | * SUCH DAMAGE. |
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32 | * |
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33 | * @(#)in.h 8.3 (Berkeley) 1/3/94 |
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34 | * $Id$ |
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35 | */ |
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36 | |
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37 | #ifndef _NETINET_IN_H_ |
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38 | #define _NETINET_IN_H_ |
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39 | |
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40 | /* |
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41 | * Constants and structures defined by the internet system, |
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42 | * Per RFC 790, September 1981, and numerous additions. |
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43 | */ |
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44 | |
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45 | /* |
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46 | * Protocols (RFC 1700) |
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47 | */ |
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48 | #define IPPROTO_IP 0 /* dummy for IP */ |
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49 | #define IPPROTO_ICMP 1 /* control message protocol */ |
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50 | #define IPPROTO_IGMP 2 /* group mgmt protocol */ |
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51 | #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ |
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52 | #define IPPROTO_IPIP 4 /* IP encapsulation in IP */ |
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53 | #define IPPROTO_TCP 6 /* tcp */ |
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54 | #define IPPROTO_ST 7 /* Stream protocol II */ |
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55 | #define IPPROTO_EGP 8 /* exterior gateway protocol */ |
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56 | #define IPPROTO_PIGP 9 /* private interior gateway */ |
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57 | #define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ |
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58 | #define IPPROTO_NVPII 11 /* network voice protocol*/ |
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59 | #define IPPROTO_PUP 12 /* pup */ |
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60 | #define IPPROTO_ARGUS 13 /* Argus */ |
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61 | #define IPPROTO_EMCON 14 /* EMCON */ |
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62 | #define IPPROTO_XNET 15 /* Cross Net Debugger */ |
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63 | #define IPPROTO_CHAOS 16 /* Chaos*/ |
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64 | #define IPPROTO_UDP 17 /* user datagram protocol */ |
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65 | #define IPPROTO_MUX 18 /* Multiplexing */ |
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66 | #define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ |
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67 | #define IPPROTO_HMP 20 /* Host Monitoring */ |
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68 | #define IPPROTO_PRM 21 /* Packet Radio Measurement */ |
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69 | #define IPPROTO_IDP 22 /* xns idp */ |
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70 | #define IPPROTO_TRUNK1 23 /* Trunk-1 */ |
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71 | #define IPPROTO_TRUNK2 24 /* Trunk-2 */ |
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72 | #define IPPROTO_LEAF1 25 /* Leaf-1 */ |
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73 | #define IPPROTO_LEAF2 26 /* Leaf-2 */ |
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74 | #define IPPROTO_RDP 27 /* Reliable Data */ |
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75 | #define IPPROTO_IRTP 28 /* Reliable Transaction */ |
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76 | #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ |
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77 | #define IPPROTO_BLT 30 /* Bulk Data Transfer */ |
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78 | #define IPPROTO_NSP 31 /* Network Services */ |
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79 | #define IPPROTO_INP 32 /* Merit Internodal */ |
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80 | #define IPPROTO_SEP 33 /* Sequential Exchange */ |
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81 | #define IPPROTO_3PC 34 /* Third Party Connect */ |
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82 | #define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ |
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83 | #define IPPROTO_XTP 36 /* XTP */ |
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84 | #define IPPROTO_DDP 37 /* Datagram Delivery */ |
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85 | #define IPPROTO_CMTP 38 /* Control Message Transport */ |
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86 | #define IPPROTO_TPXX 39 /* TP++ Transport */ |
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87 | #define IPPROTO_IL 40 /* IL transport protocol */ |
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88 | #define IPPROTO_SIP 41 /* Simple Internet Protocol */ |
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89 | #define IPPROTO_SDRP 42 /* Source Demand Routing */ |
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90 | #define IPPROTO_SIPSR 43 /* SIP Source Route */ |
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91 | #define IPPROTO_SIPFRAG 44 /* SIP Fragment */ |
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92 | #define IPPROTO_IDRP 45 /* InterDomain Routing*/ |
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93 | #define IPPROTO_RSVP 46 /* resource reservation */ |
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94 | #define IPPROTO_GRE 47 /* General Routing Encap. */ |
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95 | #define IPPROTO_MHRP 48 /* Mobile Host Routing */ |
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96 | #define IPPROTO_BHA 49 /* BHA */ |
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97 | #define IPPROTO_ESP 50 /* SIPP Encap Sec. Payload */ |
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98 | #define IPPROTO_AH 51 /* SIPP Auth Header */ |
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99 | #define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ |
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100 | #define IPPROTO_SWIPE 53 /* IP with encryption */ |
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101 | #define IPPROTO_NHRP 54 /* Next Hop Resolution */ |
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102 | /* 55-60: Unassigned */ |
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103 | #define IPPROTO_AHIP 61 /* any host internal protocol */ |
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104 | #define IPPROTO_CFTP 62 /* CFTP */ |
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105 | #define IPPROTO_HELLO 63 /* "hello" routing protocol */ |
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106 | #define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ |
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107 | #define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ |
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108 | #define IPPROTO_RVD 66 /* Remote Virtual Disk */ |
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109 | #define IPPROTO_IPPC 67 /* Pluribus Packet Core */ |
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110 | #define IPPROTO_ADFS 68 /* Any distributed FS */ |
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111 | #define IPPROTO_SATMON 69 /* Satnet Monitoring */ |
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112 | #define IPPROTO_VISA 70 /* VISA Protocol */ |
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113 | #define IPPROTO_IPCV 71 /* Packet Core Utility */ |
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114 | #define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ |
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115 | #define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ |
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116 | #define IPPROTO_WSN 74 /* Wang Span Network */ |
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117 | #define IPPROTO_PVP 75 /* Packet Video Protocol */ |
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118 | #define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ |
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119 | #define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ |
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120 | #define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ |
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121 | #define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ |
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122 | #define IPPROTO_EON 80 /* ISO cnlp */ |
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123 | #define IPPROTO_VMTP 81 /* VMTP */ |
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124 | #define IPPROTO_SVMTP 82 /* Secure VMTP */ |
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125 | #define IPPROTO_VINES 83 /* Banyon VINES */ |
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126 | #define IPPROTO_TTP 84 /* TTP */ |
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127 | #define IPPROTO_IGP 85 /* NSFNET-IGP */ |
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128 | #define IPPROTO_DGP 86 /* dissimilar gateway prot. */ |
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129 | #define IPPROTO_TCF 87 /* TCF */ |
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130 | #define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ |
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131 | #define IPPROTO_OSPFIGP 89 /* OSPFIGP */ |
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132 | #define IPPROTO_SRPC 90 /* Strite RPC protocol */ |
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133 | #define IPPROTO_LARP 91 /* Locus Address Resoloution */ |
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134 | #define IPPROTO_MTP 92 /* Multicast Transport */ |
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135 | #define IPPROTO_AX25 93 /* AX.25 Frames */ |
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136 | #define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ |
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137 | #define IPPROTO_MICP 95 /* Mobile Int.ing control */ |
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138 | #define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ |
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139 | #define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ |
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140 | #define IPPROTO_ENCAP 98 /* encapsulation header */ |
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141 | #define IPPROTO_APES 99 /* any private encr. scheme */ |
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142 | #define IPPROTO_GMTP 100 /* GMTP*/ |
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143 | /* 101-254: Unassigned */ |
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144 | /* 255: Reserved */ |
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145 | /* BSD Private, local use, namespace incursion */ |
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146 | #define IPPROTO_DIVERT 254 /* divert pseudo-protocol */ |
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147 | #define IPPROTO_RAW 255 /* raw IP packet */ |
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148 | #define IPPROTO_MAX 256 |
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149 | |
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150 | |
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151 | /* |
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152 | * Local port number conventions: |
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153 | * |
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154 | * When a user does a bind(2) or connect(2) with a port number of zero, |
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155 | * a non-conflicting local port address is chosen. |
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156 | * The default range is IPPORT_RESERVED through |
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157 | * IPPORT_USERRESERVED, although that is settable by sysctl. |
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158 | * |
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159 | * A user may set the IPPROTO_IP option IP_PORTRANGE to change this |
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160 | * default assignment range. |
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161 | * |
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162 | * The value IP_PORTRANGE_DEFAULT causes the default behavior. |
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163 | * |
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164 | * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers |
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165 | * into the "high" range. These are reserved for client outbound connections |
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166 | * which do not want to be filtered by any firewalls. |
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167 | * |
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168 | * The value IP_PORTRANGE_LOW changes the range to the "low" are |
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169 | * that is (by convention) restricted to privileged processes. This |
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170 | * convention is based on "vouchsafe" principles only. It is only secure |
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171 | * if you trust the remote host to restrict these ports. |
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172 | * |
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173 | * The default range of ports and the high range can be changed by |
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174 | * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) |
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175 | * |
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176 | * Changing those values has bad security implications if you are |
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177 | * using a a stateless firewall that is allowing packets outside of that |
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178 | * range in order to allow transparent outgoing connections. |
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179 | * |
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180 | * Such a firewall configuration will generally depend on the use of these |
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181 | * default values. If you change them, you may find your Security |
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182 | * Administrator looking for you with a heavy object. |
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183 | */ |
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184 | |
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185 | /* |
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186 | * Ports < IPPORT_RESERVED are reserved for |
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187 | * privileged processes (e.g. root). (IP_PORTRANGE_LOW) |
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188 | * Ports > IPPORT_USERRESERVED are reserved |
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189 | * for servers, not necessarily privileged. (IP_PORTRANGE_DEFAULT) |
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190 | */ |
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191 | #define IPPORT_RESERVED 1024 |
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192 | #define IPPORT_USERRESERVED 5000 |
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193 | |
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194 | /* |
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195 | * Default local port range to use by setting IP_PORTRANGE_HIGH |
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196 | */ |
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197 | #define IPPORT_HIFIRSTAUTO 40000 |
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198 | #define IPPORT_HILASTAUTO 44999 |
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199 | |
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200 | /* |
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201 | * Scanning for a free reserved port return a value below IPPORT_RESERVED, |
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202 | * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was |
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203 | * 512, but that conflicts with some well-known-services that firewalls may |
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204 | * have a fit if we use. |
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205 | */ |
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206 | #define IPPORT_RESERVEDSTART 600 |
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207 | |
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208 | /* |
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209 | * Internet address (a structure for historical reasons) |
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210 | */ |
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211 | struct in_addr { |
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212 | u_long s_addr; |
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213 | }; |
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214 | |
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215 | /* |
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216 | * Definitions of bits in internet address integers. |
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217 | * On subnets, the decomposition of addresses to host and net parts |
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218 | * is done according to subnet mask, not the masks here. |
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219 | */ |
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220 | #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) |
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221 | #define IN_CLASSA_NET 0xff000000 |
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222 | #define IN_CLASSA_NSHIFT 24 |
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223 | #define IN_CLASSA_HOST 0x00ffffff |
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224 | #define IN_CLASSA_MAX 128 |
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225 | |
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226 | #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) |
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227 | #define IN_CLASSB_NET 0xffff0000 |
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228 | #define IN_CLASSB_NSHIFT 16 |
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229 | #define IN_CLASSB_HOST 0x0000ffff |
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230 | #define IN_CLASSB_MAX 65536 |
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231 | |
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232 | #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) |
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233 | #define IN_CLASSC_NET 0xffffff00 |
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234 | #define IN_CLASSC_NSHIFT 8 |
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235 | #define IN_CLASSC_HOST 0x000000ff |
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236 | |
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237 | #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) |
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238 | #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ |
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239 | #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ |
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240 | #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ |
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241 | #define IN_MULTICAST(i) IN_CLASSD(i) |
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242 | |
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243 | #define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000) |
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244 | #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) |
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245 | |
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246 | #define INADDR_ANY (u_long)0x00000000 |
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247 | #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ |
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248 | #ifndef KERNEL |
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249 | #define INADDR_NONE 0xffffffff /* -1 return */ |
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250 | #endif |
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251 | |
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252 | #define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */ |
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253 | #define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */ |
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254 | #define INADDR_ALLRTRS_GROUP (u_long)0xe0000002 /* 224.0.0.2 */ |
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255 | #define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */ |
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256 | |
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257 | #define IN_LOOPBACKNET 127 /* official! */ |
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258 | #ifndef INADDR_LOOPBACK |
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259 | #define INADDR_LOOPBACK (u_long)0x7F000001 /* 127.0.0.1 */ |
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260 | #endif |
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261 | |
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262 | /* |
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263 | * Socket address, internet style. |
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264 | */ |
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265 | struct sockaddr_in { |
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266 | u_char sin_len; |
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267 | u_char sin_family; |
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268 | u_short sin_port; |
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269 | struct in_addr sin_addr; |
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270 | char sin_zero[8]; |
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271 | }; |
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272 | |
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273 | /* |
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274 | * Structure used to describe IP options. |
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275 | * Used to store options internally, to pass them to a process, |
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276 | * or to restore options retrieved earlier. |
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277 | * The ip_dst is used for the first-hop gateway when using a source route |
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278 | * (this gets put into the header proper). |
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279 | */ |
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280 | struct ip_opts { |
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281 | struct in_addr ip_dst; /* first hop, 0 w/o src rt */ |
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282 | char ip_opts[40]; /* actually variable in size */ |
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283 | }; |
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284 | |
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285 | /* |
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286 | * Options for use with [gs]etsockopt at the IP level. |
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287 | * First word of comment is data type; bool is stored in int. |
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288 | */ |
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289 | #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ |
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290 | #define IP_HDRINCL 2 /* int; header is included with data */ |
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291 | #define IP_TOS 3 /* int; IP type of service and preced. */ |
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292 | #define IP_TTL 4 /* int; IP time to live */ |
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293 | #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ |
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294 | #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ |
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295 | #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ |
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296 | #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ |
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297 | #define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */ |
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298 | #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ |
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299 | #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ |
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300 | #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ |
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301 | #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ |
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302 | #define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ |
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303 | #define IP_RSVP_ON 15 /* enable RSVP in kernel */ |
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304 | #define IP_RSVP_OFF 16 /* disable RSVP in kernel */ |
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305 | #define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ |
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306 | #define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ |
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307 | #define IP_PORTRANGE 19 /* int; range to choose for unspec port */ |
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308 | #define IP_RECVIF 20 /* bool; receive reception if w/dgram */ |
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309 | |
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310 | #define IP_FW_ADD 50 /* add a firewall rule to chain */ |
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311 | #define IP_FW_DEL 51 /* delete a firewall rule from chain */ |
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312 | #define IP_FW_FLUSH 52 /* flush firewall rule chain */ |
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313 | #define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */ |
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314 | #define IP_FW_GET 54 /* get entire firewall rule chain */ |
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315 | #define IP_NAT 55 /* set/get NAT opts */ |
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316 | |
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317 | /* |
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318 | * Defaults and limits for options |
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319 | */ |
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320 | #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ |
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321 | #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ |
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322 | #define IP_MAX_MEMBERSHIPS 20 /* per socket */ |
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323 | |
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324 | /* |
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325 | * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. |
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326 | */ |
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327 | struct ip_mreq { |
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328 | struct in_addr imr_multiaddr; /* IP multicast address of group */ |
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329 | struct in_addr imr_interface; /* local IP address of interface */ |
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330 | }; |
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331 | |
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332 | /* |
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333 | * Argument for IP_PORTRANGE: |
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334 | * - which range to search when port is unspecified at bind() or connect() |
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335 | */ |
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336 | #define IP_PORTRANGE_DEFAULT 0 /* default range */ |
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337 | #define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ |
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338 | #define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ |
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339 | |
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340 | /* |
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341 | * Definitions for inet sysctl operations. |
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342 | * |
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343 | * Third level is protocol number. |
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344 | * Fourth level is desired variable within that protocol. |
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345 | */ |
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346 | #define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */ |
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347 | |
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348 | #define CTL_IPPROTO_NAMES { \ |
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349 | { "ip", CTLTYPE_NODE }, \ |
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350 | { "icmp", CTLTYPE_NODE }, \ |
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351 | { "igmp", CTLTYPE_NODE }, \ |
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352 | { "ggp", CTLTYPE_NODE }, \ |
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353 | { 0, 0 }, \ |
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354 | { 0, 0 }, \ |
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355 | { "tcp", CTLTYPE_NODE }, \ |
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356 | { 0, 0 }, \ |
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357 | { "egp", CTLTYPE_NODE }, \ |
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358 | { 0, 0 }, \ |
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359 | { 0, 0 }, \ |
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360 | { 0, 0 }, \ |
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361 | { "pup", CTLTYPE_NODE }, \ |
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362 | { 0, 0 }, \ |
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363 | { 0, 0 }, \ |
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364 | { 0, 0 }, \ |
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365 | { 0, 0 }, \ |
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366 | { "udp", CTLTYPE_NODE }, \ |
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367 | { 0, 0 }, \ |
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368 | { 0, 0 }, \ |
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369 | { 0, 0 }, \ |
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370 | { 0, 0 }, \ |
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371 | { "idp", CTLTYPE_NODE }, \ |
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372 | } |
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373 | |
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374 | /* |
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375 | * Names for IP sysctl objects |
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376 | */ |
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377 | #define IPCTL_FORWARDING 1 /* act as router */ |
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378 | #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ |
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379 | #define IPCTL_DEFTTL 3 /* default TTL */ |
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380 | #ifdef notyet |
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381 | #define IPCTL_DEFMTU 4 /* default MTU */ |
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382 | #endif |
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383 | #define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ |
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384 | #define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ |
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385 | #define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ |
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386 | #define IPCTL_SOURCEROUTE 8 /* may perform source routes */ |
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387 | #define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ |
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388 | #define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ |
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389 | #define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ |
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390 | #define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ |
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391 | #define IPCTL_MAXID 13 |
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392 | |
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393 | #define IPCTL_NAMES { \ |
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394 | { 0, 0 }, \ |
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395 | { "forwarding", CTLTYPE_INT }, \ |
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396 | { "redirect", CTLTYPE_INT }, \ |
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397 | { "ttl", CTLTYPE_INT }, \ |
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398 | { "mtu", CTLTYPE_INT }, \ |
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399 | { "rtexpire", CTLTYPE_INT }, \ |
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400 | { "rtminexpire", CTLTYPE_INT }, \ |
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401 | { "rtmaxcache", CTLTYPE_INT }, \ |
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402 | { "sourceroute", CTLTYPE_INT }, \ |
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403 | { "directed-broadcast", CTLTYPE_INT }, \ |
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404 | { "intr-queue-maxlen", CTLTYPE_INT }, \ |
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405 | { "intr-queue-drops", CTLTYPE_INT }, \ |
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406 | { "accept_sourceroute", CTLTYPE_INT }, \ |
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407 | } |
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408 | |
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409 | |
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410 | #ifdef KERNEL |
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411 | struct ifnet; struct mbuf; /* forward declarations for Standard C */ |
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412 | |
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413 | int in_broadcast __P((struct in_addr, struct ifnet *)); |
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414 | int in_canforward __P((struct in_addr)); |
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415 | int in_cksum __P((struct mbuf *, int)); |
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416 | int in_localaddr __P((struct in_addr)); |
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417 | char *inet_ntoa __P((struct in_addr)); /* in libkern */ |
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418 | |
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419 | /* Firewall hooks */ |
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420 | struct ip; |
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421 | typedef int ip_fw_chk_t __P((struct ip**, int, struct ifnet*, int, struct mbuf**)); |
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422 | typedef int ip_fw_ctl_t __P((int, struct mbuf**)); |
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423 | extern ip_fw_chk_t *ip_fw_chk_ptr; |
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424 | extern ip_fw_ctl_t *ip_fw_ctl_ptr; |
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425 | |
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426 | /* IP NAT hooks */ |
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427 | typedef int ip_nat_t __P((struct ip**, struct mbuf**, struct ifnet*, int)); |
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428 | typedef int ip_nat_ctl_t __P((int, struct mbuf**)); |
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429 | extern ip_nat_t *ip_nat_ptr; |
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430 | extern ip_nat_ctl_t *ip_nat_ctl_ptr; |
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431 | #define IP_NAT_IN 0x00000001 |
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432 | #define IP_NAT_OUT 0x00000002 |
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433 | |
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434 | #endif /* KERNEL */ |
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435 | |
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436 | #endif |
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