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annotate packages/net/tcpip/current/include/netinet/ip_state.h @ 97:ced4577552cd ecos-sw-2000-06-06

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Merge from eCos master repository on 2000-06-06-08:44:00-BST
author jlarmour
date Tue, 06 Jun 2000 08:39:36 +0000
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children 97d9d85b42c0
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97
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1 //==========================================================================
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2 //
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3 // include/netinet/ip_state.h
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4 //
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5 //
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //####BSDCOPYRIGHTBEGIN####
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32 //
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33 // -------------------------------------------
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34 //
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35 // Portions of this software may have been derived from OpenBSD or other sources,
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36 // and are covered by the appropriate copyright disclaimers included herein.
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37 //
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38 // -------------------------------------------
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39 //
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40 //####BSDCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): gthomas
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45 // Contributors: gthomas
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46 // Date: 2000-01-10
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47 // Purpose:
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48 // Description:
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49 //
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //==========================================================================
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54
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55
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56 /* $OpenBSD: ip_state.h,v 1.10 1999/12/15 05:20:23 kjell Exp $ */
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57 /*
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58 * Copyright (C) 1995-1998 by Darren Reed.
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59 *
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60 * Redistribution and use in source and binary forms are permitted
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61 * provided that this notice is preserved and due credit is given
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62 * to the original author and the contributors.
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63 *
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64 * @(#)ip_state.h 1.3 1/12/96 (C) 1995 Darren Reed
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65 * $Id: ip_state.h,v 1.1 2000/06/06 08:39:40 jlarmour Exp $
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66 */
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67
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68 #ifndef _NETINET_IP_STATE_H__
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69 #define _NETINET_IP_STATE_H__
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70
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71 #define IPSTATE_SIZE 257
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72 #define IPSTATE_MAX 2048 /* Maximum number of states held */
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73
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74 #define PAIRS(s1,d1,s2,d2) ((((s1) == (s2)) && ((d1) == (d2))) ||\
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75 (((s1) == (d2)) && ((d1) == (s2))))
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76 #define IPPAIR(s1,d1,s2,d2) PAIRS((s1).s_addr, (d1).s_addr, \
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77 (s2).s_addr, (d2).s_addr)
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78
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79
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80 typedef struct udpstate {
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81 u_short us_sport;
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82 u_short us_dport;
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83 } udpstate_t;
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84
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85 typedef struct icmpstate {
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86 u_short ics_id;
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87 u_short ics_seq;
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88 u_char ics_type;
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89 } icmpstate_t;
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90
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91 typedef struct tcpdata {
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92 u_32_t td_end;
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93 u_32_t td_maxend;
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94 u_short td_maxwin;
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95 } tcpdata_t;
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96
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97 typedef struct tcpstate {
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98 u_short ts_sport;
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99 u_short ts_dport;
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100 tcpdata_t ts_data[2];
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101 u_char ts_state[2];
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102 } tcpstate_t;
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103
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104 typedef struct ipstate {
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105 struct ipstate *is_next;
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106 u_long is_age;
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107 u_int is_pass;
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108 U_QUAD_T is_pkts;
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109 U_QUAD_T is_bytes;
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110 void *is_ifpin;
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111 void *is_ifpout;
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112 frentry_t *is_rule;
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113 struct in_addr is_src;
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114 struct in_addr is_dst;
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115 u_char is_p; /* Protocol */
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116 u_char is_rout; /* Is rule in/out ? */
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117 u_32_t is_flags;
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118 u_32_t is_opt; /* packet options set */
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119 u_32_t is_optmsk; /* " " mask */
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120 u_short is_sec; /* security options set */
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121 u_short is_secmsk; /* " " mask */
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122 u_short is_auth; /* authentication options set */
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123 u_short is_authmsk; /* " " mask */
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124 union {
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125 icmpstate_t is_ics;
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126 tcpstate_t is_ts;
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127 udpstate_t is_us;
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128 } is_ps;
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129 } ipstate_t;
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130
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131 #define is_icmp is_ps.is_ics
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132 #define is_type is_icmp.ics_type
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133 #define is_code is_icmp.ics_code
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134 #define is_tcp is_ps.is_ts
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135 #define is_udp is_ps.is_us
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136 #define is_send is_tcp.ts_data[0].td_end
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137 #define is_dend is_tcp.ts_data[1].td_end
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138 #define is_maxswin is_tcp.ts_data[0].td_maxwin
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139 #define is_maxdwin is_tcp.ts_data[1].td_maxwin
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140 #define is_maxsend is_tcp.ts_data[0].td_maxend
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141 #define is_maxdend is_tcp.ts_data[1].td_maxend
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142 #define is_sport is_tcp.ts_sport
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143 #define is_dport is_tcp.ts_dport
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144 #define is_state is_tcp.ts_state
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145
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146 #define TH_OPENING (TH_SYN|TH_ACK)
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147 /*
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148 * is_flags:
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149 * Bits 0 - 3 are use as a mask with the current packet's bits to check for
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150 * whether it is short, tcp/udp, a fragment or the presence of IP options.
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151 * Bits 4 - 7 are set from the initial packet and contain what the packet
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152 * anded with bits 0-3 must match.
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153 * Bits 8,9 are used to indicate wildcard source/destination port matching.
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154 */
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155
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156
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157 typedef struct ipslog {
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158 U_QUAD_T isl_pkts;
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159 U_QUAD_T isl_bytes;
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160 struct in_addr isl_src;
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161 struct in_addr isl_dst;
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162 u_char isl_p;
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163 u_char isl_flags;
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164 u_char isl_state[2];
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165 u_short isl_type;
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166 union {
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167 u_short isl_filler[2];
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168 u_short isl_ports[2];
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169 u_short isl_icmp;
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170 } isl_ps;
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171 } ipslog_t;
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172
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173 #define isl_sport isl_ps.isl_ports[0]
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174 #define isl_dport isl_ps.isl_ports[1]
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175 #define isl_itype isl_ps.isl_icmp
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176
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177 #define ISL_NEW 0
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178 #define ISL_EXPIRE 0xffff
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179 #define ISL_FLUSH 0xfffe
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180
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181
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182 typedef struct ips_stat {
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183 u_long iss_hits;
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184 u_long iss_miss;
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185 u_long iss_max;
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186 u_long iss_tcp;
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187 u_long iss_udp;
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188 u_long iss_icmp;
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189 u_long iss_nomem;
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190 u_long iss_expire;
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191 u_long iss_fin;
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192 u_long iss_active;
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193 u_long iss_logged;
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194 u_long iss_logfail;
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195 u_long iss_inuse;
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196 ipstate_t **iss_table;
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197 } ips_stat_t;
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198
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199
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200 extern u_long fr_tcpidletimeout;
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201 extern u_long fr_tcpclosewait;
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202 extern u_long fr_tcplastack;
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203 extern u_long fr_tcptimeout;
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204 extern u_long fr_tcpclosed;
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205 extern u_long fr_udptimeout;
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206 extern u_long fr_icmptimeout;
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207 extern int fr_stateinit __P((void));
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208 extern int fr_tcpstate __P((ipstate_t *, fr_info_t *, ip_t *, tcphdr_t *));
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209 extern ipstate_t *fr_addstate __P((ip_t *, fr_info_t *, u_int));
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210 extern frentry_t *fr_checkstate __P((ip_t *, fr_info_t *));
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211 extern void fr_timeoutstate __P((void));
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212 extern void fr_tcp_age __P((u_long *, u_char *, ip_t *, fr_info_t *, int));
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213 extern void fr_stateunload __P((void));
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214 extern void ipstate_log __P((struct ipstate *, u_int));
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215 #if defined(__NetBSD__) || defined(__OpenBSD__)
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216 extern int fr_state_ioctl __P((caddr_t, u_long, int));
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217 #else
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218 extern int fr_state_ioctl __P((caddr_t, int, int));
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219 #endif
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220
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221 #endif /* _NETINET_IP_STATE_H__ */