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1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */ |
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2 /* |
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3 * Copyright (c) 2011 CTTC |
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4 * |
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5 * This program is free software; you can redistribute it and/or modify |
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6 * it under the terms of the GNU General Public License version 2 as |
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7 * published by the Free Software Foundation; |
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8 * |
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9 * This program is distributed in the hope that it will be useful, |
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 * GNU General Public License for more details. |
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13 * |
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14 * You should have received a copy of the GNU General Public License |
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15 * along with this program; if not, write to the Free Software |
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16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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17 * |
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18 * Author: Nicola Baldo <nbaldo@cttc.es> |
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19 */ |
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20 |
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21 |
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22 |
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23 |
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24 #include "epc-tft.h" |
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25 #include "ns3/abort.h" |
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26 #include "ns3/log.h" |
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27 |
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28 |
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29 namespace ns3 { |
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30 |
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31 NS_LOG_COMPONENT_DEFINE ("EpcTft"); |
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32 |
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33 std::ostream& operator<< (std::ostream& os, EpcTft::Direction& d) |
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34 { |
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35 switch (d) |
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36 { |
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37 case EpcTft::DOWNLINK: |
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38 os << "DOWNLINK"; |
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39 break; |
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40 case EpcTft::UPLINK: |
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41 os << "UPLINK"; |
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42 break; |
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43 default: |
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44 os << "BIDIRECTIONAL"; |
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45 break; |
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46 } |
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47 return os; |
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48 } |
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49 |
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50 |
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51 std::ostream& operator<< (std::ostream& os, EpcTft::PacketFilter& f) |
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52 { |
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53 os << " direction: " << f.direction |
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54 << " remoteAddress: " << f.remoteAddress |
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55 << " remoteMask: " << f.remoteMask |
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56 << " localAddress: " << f.localAddress |
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57 << " localMask: " << f.localMask |
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58 << " remotePortStart: " << f.remotePortStart |
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59 << " remotePortEnd: " << f.remotePortEnd |
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60 << " localPortStart: " << f.localPortStart |
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61 << " localPortEnd: " << f.localPortEnd |
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62 << " typeOfService: 0x" << std::hex << (uint16_t) f.typeOfService << std::dec |
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63 << " typeOfServiceMask: 0x" << std::hex << (uint16_t) f.typeOfServiceMask << std::dec; |
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64 return os; |
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65 } |
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66 |
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67 EpcTft::PacketFilter::PacketFilter () |
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68 : precedence (255), |
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69 direction (BIDIRECTIONAL), |
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70 remoteMask ("0.0.0.0"), |
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71 localMask ("0.0.0.0"), |
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72 remotePortStart (0), |
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73 remotePortEnd (65535), |
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74 localPortStart (0), |
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75 localPortEnd (65535), |
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76 typeOfService (0), |
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77 typeOfServiceMask (0) |
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78 { |
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79 NS_LOG_FUNCTION (this); |
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80 } |
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81 |
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82 bool |
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83 EpcTft::PacketFilter::Matches (Direction d, |
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84 Ipv4Address ra, |
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85 Ipv4Address la, |
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86 uint16_t rp, |
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87 uint16_t lp, |
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88 uint8_t tos) |
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89 { |
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90 NS_LOG_FUNCTION (this << d << ra << la << rp << lp << (uint16_t) tos); |
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91 if (d & direction) |
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92 { |
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93 NS_LOG_LOGIC ("d matches"); |
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94 if (remoteMask.IsMatch (remoteAddress, ra)) |
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95 { |
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96 NS_LOG_LOGIC ("ra matches"); |
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97 if (localMask.IsMatch (localAddress, la)) |
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98 { |
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99 NS_LOG_LOGIC ("ls matches"); |
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100 if (rp >= remotePortStart) |
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101 { |
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102 NS_LOG_LOGIC ("rps matches"); |
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103 if (rp <= remotePortEnd) |
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104 { |
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105 NS_LOG_LOGIC ("rpe matches"); |
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106 if (lp >= localPortStart) |
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107 { |
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108 NS_LOG_LOGIC ("lps matches"); |
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109 if (lp <= localPortEnd) |
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110 { |
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111 NS_LOG_LOGIC ("lpe matches"); |
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112 if ((tos & typeOfServiceMask) == (typeOfService & typeOfServiceMask)) |
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113 { |
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114 NS_LOG_LOGIC ("tos matches --> have match!"); |
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115 return true; |
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116 } |
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117 } |
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118 } |
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119 } |
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120 } |
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121 } |
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122 else |
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123 { |
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124 NS_LOG_LOGIC ("la doesn't match: la=" << la << " f.la=" << localAddress << " f.lmask=" << localMask); |
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125 } |
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126 } |
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127 else |
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128 { |
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129 NS_LOG_LOGIC ("ra doesn't match: ra=" << ra << " f.ra=" << remoteAddress << " f.rmask=" << remoteMask); |
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130 } |
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131 } |
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132 else |
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133 { |
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134 NS_LOG_LOGIC ("d doesn't match: d=0x" << std::hex << d << " f.d=0x" << std::hex << direction << std::dec); |
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135 } |
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136 return false; |
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137 } |
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138 |
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139 |
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140 Ptr<EpcTft> |
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141 EpcTft::Default () |
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142 { |
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143 Ptr<EpcTft> tft = Create<EpcTft> (); |
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144 EpcTft::PacketFilter defaultPacketFilter; |
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145 tft->Add (defaultPacketFilter); |
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146 return tft; |
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147 } |
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148 |
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149 |
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150 EpcTft::EpcTft () |
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151 : m_numFilters (0) |
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152 { |
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153 NS_LOG_FUNCTION (this); |
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154 } |
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155 |
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156 uint8_t |
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157 EpcTft::Add (PacketFilter f) |
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158 { |
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159 NS_LOG_FUNCTION (this << f); |
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160 NS_ABORT_IF (m_numFilters >= 16); |
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161 |
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162 std::list<PacketFilter>::iterator it; |
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163 for (it = m_filters.begin (); |
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164 (it != m_filters.end ()) && (it->precedence <= f.precedence); |
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165 ++it) |
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166 { |
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167 } |
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168 m_filters.insert (it, f); |
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169 ++m_numFilters; |
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170 return (m_numFilters - 1); |
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171 } |
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172 |
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173 bool |
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174 EpcTft::Matches (Direction direction, |
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175 Ipv4Address remoteAddress, |
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176 Ipv4Address localAddress, |
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177 uint16_t remotePort, |
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178 uint16_t localPort, |
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179 uint8_t typeOfService) |
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180 { |
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181 NS_LOG_FUNCTION (this << direction << remoteAddress << localAddress << std::dec << remotePort << localPort << (uint16_t) typeOfService); |
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182 for (std::list<PacketFilter>::iterator it = m_filters.begin (); |
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183 it != m_filters.end (); |
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184 ++it) |
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185 { |
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186 if (it->Matches (direction, remoteAddress, localAddress, remotePort, localPort, typeOfService)) |
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187 { |
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188 return true; |
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189 } |
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190 } |
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191 return false; |
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192 } |
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193 |
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194 |
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195 } // namespace ns3 |