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<div class="title">dhcp.c</div> </div>
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<div class="contents">
<a href="dhcp_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * Copyright (c) 2001-2004 Leon Woestenberg <leon.woestenberg@gmx.net></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * Copyright (c) 2001-2004 Axon Digital Design B.V., The Netherlands.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * 3. The name of the author may not be used to endorse or promote products</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * The Swedish Institute of Computer Science and Adam Dunkels</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * are specifically granted permission to redistribute this</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> * source code.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * Author: Leon Woestenberg <leon.woestenberg@gmx.net></span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_DHCP </span><span class="comment">/* don't build if not configured for use in lwipopts.h */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#include "<a class="code" href="stats_8h.html">net/stats.h</a>"</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#include "<a class="code" href="mem_8h.html">net/mem.h</a>"</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#include "<a class="code" href="udp_8h.html">net/udp.h</a>"</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#include "<a class="code" href="ip__addr_8h.html">net/ip_addr.h</a>"</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#include "<a class="code" href="netif_8h.html">net/netif.h</a>"</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#include "<a class="code" href="def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#include "<a class="code" href="dhcp_8h.html">net/dhcp.h</a>"</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#include "<a class="code" href="autoip_8h.html">net/autoip.h</a>"</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#include "<a class="code" href="dns_8h.html">net/dns.h</a>"</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#include "<a class="code" href="etharp_8h.html">net/etharp.h</a>"</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#include "<a class="code" href="prot_2dhcp_8h.html">net/prot/dhcp.h</a>"</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#ifndef DHCP_CREATE_RAND_XID</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#define DHCP_CREATE_RAND_XID 1</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor">#ifdef DHCP_GLOBAL_XID_HEADER</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor">#include DHCP_GLOBAL_XID_HEADER </span><span class="comment">/* include optional starting XID generation prototypes */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#define DHCP_MAX_MSG_LEN(netif) (netif->mtu)</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#define DHCP_MAX_MSG_LEN_MIN_REQUIRED 576</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor">#define DHCP_MIN_REPLY_LEN 44</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#define REBOOT_TRIES 2</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#if LWIP_DNS && LWIP_DHCP_MAX_DNS_SERVERS</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor">#if DNS_MAX_SERVERS > LWIP_DHCP_MAX_DNS_SERVERS</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor">#define LWIP_DHCP_PROVIDE_DNS_SERVERS LWIP_DHCP_MAX_DNS_SERVERS</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor">#define LWIP_DHCP_PROVIDE_DNS_SERVERS DNS_MAX_SERVERS</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#define LWIP_DHCP_PROVIDE_DNS_SERVERS 0</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">enum</span> dhcp_option_idx {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  DHCP_OPTION_IDX_OVERLOAD = 0,</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  DHCP_OPTION_IDX_MSG_TYPE,</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  DHCP_OPTION_IDX_SERVER_ID,</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  DHCP_OPTION_IDX_LEASE_TIME,</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  DHCP_OPTION_IDX_T1,</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  DHCP_OPTION_IDX_T2,</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  DHCP_OPTION_IDX_SUBNET_MASK,</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  DHCP_OPTION_IDX_ROUTER,</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#if LWIP_DHCP_PROVIDE_DNS_SERVERS</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  DHCP_OPTION_IDX_DNS_SERVER,</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  DHCP_OPTION_IDX_DNS_SERVER_LAST = DHCP_OPTION_IDX_DNS_SERVER + LWIP_DHCP_PROVIDE_DNS_SERVERS - 1,</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_PROVIDE_DNS_SERVERS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#if LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  DHCP_OPTION_IDX_NTP_SERVER,</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  DHCP_OPTION_IDX_NTP_SERVER_LAST = DHCP_OPTION_IDX_NTP_SERVER + <a class="code" href="lwipopts_8h.html#a9d014e3f7dc9e1e7c7decd8652ba65e2">LWIP_DHCP_MAX_NTP_SERVERS</a> - 1,</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_GET_NTP_SRV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  DHCP_OPTION_IDX_MAX</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> };</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> dhcp_rx_options_val[DHCP_OPTION_IDX_MAX];</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dhcp_rx_options_given[DHCP_OPTION_IDX_MAX];</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dhcp_discover_request_options[] = {</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="prot_2dhcp_8h.html#acff5b8c45e6d63afd973aa8a0e72a901">DHCP_OPTION_SUBNET_MASK</a>,</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <a class="code" href="prot_2dhcp_8h.html#a72cfc4e231017d1d116bb1d69d18ae8c">DHCP_OPTION_ROUTER</a>,</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <a class="code" href="prot_2dhcp_8h.html#ac6c1fce157c3297412cfb28d0822a93b">DHCP_OPTION_BROADCAST</a></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#if LWIP_DHCP_PROVIDE_DNS_SERVERS</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  , <a class="code" href="prot_2dhcp_8h.html#a8f05c5c6084fbac0be7b24101189232b">DHCP_OPTION_DNS_SERVER</a></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_PROVIDE_DNS_SERVERS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor">#if LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  , <a class="code" href="prot_2dhcp_8h.html#ae5a724660dd11c27d8ed477f0ee136e3">DHCP_OPTION_NTP</a></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_GET_NTP_SRV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  };</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#ifdef DHCP_GLOBAL_XID</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> xid;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> xid_initialised;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_GLOBAL_XID */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor">#define dhcp_option_given(dhcp, idx) (dhcp_rx_options_given[idx] != 0)</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor">#define dhcp_got_option(dhcp, idx) (dhcp_rx_options_given[idx] = 1)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#define dhcp_clear_option(dhcp, idx) (dhcp_rx_options_given[idx] = 0)</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#define dhcp_clear_all_options(dhcp) (memset(dhcp_rx_options_given, 0, sizeof(dhcp_rx_options_given)))</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor">#define dhcp_get_option_value(dhcp, idx) (dhcp_rx_options_val[idx])</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#define dhcp_set_option_value(dhcp, idx, val) (dhcp_rx_options_val[idx] = (val))</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">static</span> <span class="keyword">struct </span>udp_pcb *dhcp_pcb;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dhcp_pcb_refcount;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">/* DHCP client state machine functions */</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_discover(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_select(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_bind(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor">#if DHCP_DOES_ARP_CHECK</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_decline(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_DOES_ARP_CHECK */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_rebind(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_reboot(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_set_state(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> new_state);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment">/* receive, unfold, parse and free incoming messages */</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_recv(<span class="keywordtype">void</span> *arg, <span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment">/* set the DHCP timers */</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_t1_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_t2_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment">/* build outgoing messages */</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment">/* create a DHCP message, fill in common headers */</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dhcp_create_msg(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> message_type);</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment">/* free a DHCP request */</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_delete_msg(<span class="keyword">struct</span> dhcp *dhcp);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment">/* add a DHCP option (type, then length in bytes) */</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_option(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> option_type, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> option_len);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment">/* add option values */</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_option_byte(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> value);</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_option_short(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> value);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_option_long(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> value);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="preprocessor">#if LWIP_NETIF_HOSTNAME</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_option_hostname(<span class="keyword">struct</span> dhcp *dhcp, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_NETIF_HOSTNAME */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment">/* always add the DHCP options trailer to end and pad */</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dhcp_option_trailer(<span class="keyword">struct</span> dhcp *dhcp);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> dhcp_inc_pcb_refcount(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> {</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">if</span> (dhcp_pcb_refcount == 0) {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_inc_pcb_refcount(): memory leak"</span>, dhcp_pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  </div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">/* allocate UDP PCB */</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  dhcp_pcb = udp_new();</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (dhcp_pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="ip_8h.html#a13f48cf825c7f074dc05bea54e9d6a93">ip_set_option</a>(dhcp_pcb, <a class="code" href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">SOF_BROADCAST</a>);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  </div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">/* set up local and remote port for the pcb -> listen on all interfaces on all src/dest IPs */</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  udp_bind(dhcp_pcb, IP4_ADDR_ANY, <a class="code" href="prot_2dhcp_8h.html#a23dd788b1cd28a0d834c3afefceaa1c1">DHCP_CLIENT_PORT</a>);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  udp_connect(dhcp_pcb, IP4_ADDR_ANY, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  udp_recv(dhcp_pcb, dhcp_recv, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  dhcp_pcb_refcount++;</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> }</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> dhcp_dec_pcb_refcount(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> {</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_pcb_refcount(): refcount error"</span>, (dhcp_pcb_refcount > 0));</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  dhcp_pcb_refcount--;</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (dhcp_pcb_refcount == 0) {</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  udp_remove(dhcp_pcb);</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  dhcp_pcb = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> }</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  </div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> dhcp_handle_nak(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> {</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_handle_nak(netif=%p) %c%c%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0], <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1], (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ab7ef01e505dd2feb781fe86756b1c973">num</a>));</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="comment">/* Change to a defined state - set this before assigning the address</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"> to ensure the callback can use dhcp_supplied_address() */</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba2dcc3cf888f75285cdc86c3574e1af44">DHCP_STATE_BACKING_OFF</a>);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">/* remove IP address from interface (must no longer be used, as per RFC2131) */</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  netif_set_addr(<a class="code" href="structnetif.html">netif</a>, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4);</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="comment">/* We can immediately restart discovery */</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="preprocessor">#if DHCP_DOES_ARP_CHECK</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> dhcp_check(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> {</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_check(netif=%p) %c%c\n"</span>, (<span class="keywordtype">void</span> *)<a class="code" href="structnetif.html">netif</a>, (<a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0],</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  (<a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1]));</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba56d0710d1876bafdbf9a1c333d6d9ab9">DHCP_STATE_CHECKING</a>);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">/* create an ARP query for the offered IP address, expecting that no host</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="comment"> responds, as the IP address should not be in use. */</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  result = etharp_query(<a class="code" href="structnetif.html">netif</a>, &dhcp->offered_ip_addr, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">if</span> (result != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>, (<span class="stringliteral">"dhcp_check: could not perform ARP query\n"</span>));</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  }</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  dhcp->tries++;</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  }</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  msecs = 500;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_check(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> }</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_DOES_ARP_CHECK */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  </div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> dhcp_handle_offer(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> {</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  </div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_handle_offer(netif=%p) %c%c%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0], <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1], (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ab7ef01e505dd2feb781fe86756b1c973">num</a>));</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">/* obtain the server address */</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_SERVER_ID)) {</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  ip_addr_set_ip4_u32(&dhcp->server_ip_addr, <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_SERVER_ID)));</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_handle_offer(): server 0x%08"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  ip4_addr_get_u32(ip_2_ip4(&dhcp->server_ip_addr))));</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="comment">/* remember offered address */</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  ip4_addr_copy(dhcp->offered_ip_addr, dhcp->msg_in->yiaddr);</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_handle_offer(): offer for 0x%08"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  ip4_addr_get_u32(&dhcp->offered_ip_addr)));</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  </div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  dhcp_select(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  (<span class="stringliteral">"dhcp_handle_offer(netif=%p) did not get server ID!\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> }</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> dhcp_select(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> {</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_select(netif=%p) %c%c%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0], <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1], (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ab7ef01e505dd2feb781fe86756b1c973">num</a>));</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a>);</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  </div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a>);</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a>, <a class="code" href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a>);</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  dhcp_option_short(dhcp, DHCP_MAX_MSG_LEN(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="comment">/* MUST request the offered IP address */</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a1cbad840414a6617ebdb17b1b9073597">DHCP_OPTION_REQUESTED_IP</a>, 4);</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  dhcp_option_long(dhcp, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ip4_addr_get_u32(&dhcp->offered_ip_addr)));</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  </div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a3bdf84c273501fb73ad217dcab87bb4a">DHCP_OPTION_SERVER_ID</a>, 4);</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  dhcp_option_long(dhcp, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ip4_addr_get_u32(ip_2_ip4(&dhcp->server_ip_addr))));</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a8b484e555c18f2d20df9a2267f35bced">DHCP_OPTION_PARAMETER_REQUEST_LIST</a>, <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options));</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options); i++) {</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  dhcp_option_byte(dhcp, dhcp_discover_request_options[i]);</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  }</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="preprocessor">#if LWIP_NETIF_HOSTNAME</span></div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  dhcp_option_hostname(dhcp, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_NETIF_HOSTNAME */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  </div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="comment">/* shrink the pbuf to the actual content length */</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  </div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="comment">/* send broadcast to any DHCP server */</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  udp_sendto_if_src(dhcp_pcb, dhcp->p_out, IP_ADDR_BROADCAST, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>, IP4_ADDR_ANY);</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_select: REQUESTING\n"</span>));</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>, (<span class="stringliteral">"dhcp_select: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  }</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  dhcp->tries++;</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  msecs = (dhcp->tries < 6 ? 1 << dhcp->tries : 60) * 1000;</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_select(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> }</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  </div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> dhcp_coarse_tmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> {</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a> = <a class="code" href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a>;</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_coarse_tmr()\n"</span>));</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">/* iterate through all network interfaces */</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">while</span> (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">/* only act on DHCP configured interfaces */</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">if</span> ((dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (dhcp->state != <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba041a5104e13c4ccfe4982ca3aac677b1">DHCP_STATE_OFF</a>)) {</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="comment">/* compare lease time to expire timeout */</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">if</span> (dhcp->t0_timeout && (++dhcp->lease_used == dhcp->t0_timeout)) {</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_coarse_tmr(): t0 timeout\n"</span>));</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">/* this clients' lease time has expired */</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  dhcp_release(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="comment">/* timer is active (non zero), and triggers (zeroes) now? */</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dhcp->t2_rebind_time && (dhcp->t2_rebind_time-- == 1)) {</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_coarse_tmr(): t2 timeout\n"</span>));</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="comment">/* this clients' rebind timeout triggered */</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  dhcp_t2_timeout(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="comment">/* timer is active (non zero), and triggers (zeroes) now */</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dhcp->t1_renew_time && (dhcp->t1_renew_time-- == 1)) {</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_coarse_tmr(): t1 timeout\n"</span>));</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">/* this clients' renewal timeout triggered */</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  dhcp_t1_timeout(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  }</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  }</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="comment">/* proceed to next netif */</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ae77736b64df442242795220d76be6b86">next</a>;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  }</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> }</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  </div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> dhcp_fine_tmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> {</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a> = <a class="code" href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a>;</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="comment">/* loop through netif's */</span></div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordflow">while</span> (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="comment">/* only act on DHCP configured interfaces */</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span> (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="comment">/* timer is active (non zero), and is about to trigger now */</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">if</span> (dhcp->request_timeout > 1) {</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  dhcp->request_timeout--;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dhcp->request_timeout == 1) {</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  dhcp->request_timeout--;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="comment">/* { netif->dhcp->request_timeout == 0 } */</span></div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_fine_tmr(): request timeout\n"</span>));</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="comment">/* this client's request timeout triggered */</span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  dhcp_timeout(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  }</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="comment">/* proceed to next network interface */</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ae77736b64df442242795220d76be6b86">next</a>;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  }</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> }</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  </div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> dhcp_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  </div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_timeout()\n"</span>));</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="comment">/* back-off period has passed, or server selection timed out */</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">if</span> ((dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba2dcc3cf888f75285cdc86c3574e1af44">DHCP_STATE_BACKING_OFF</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba8a0dca73b4731e6e475dbedc75082bc5">DHCP_STATE_SELECTING</a>)) {</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_timeout(): restarting discovery\n"</span>));</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="comment">/* receiving the requested lease timed out */</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a>) {</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_timeout(): REQUESTING, DHCP request timed out\n"</span>));</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordflow">if</span> (dhcp->tries <= 5) {</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  dhcp_select(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_timeout(): REQUESTING, releasing, restarting\n"</span>));</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  dhcp_release(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  }</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> <span class="preprocessor">#if DHCP_DOES_ARP_CHECK</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="comment">/* received no ARP reply for the offered address (which is good) */</span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba56d0710d1876bafdbf9a1c333d6d9ab9">DHCP_STATE_CHECKING</a>) {</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_timeout(): CHECKING, ARP request timed out\n"</span>));</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">if</span> (dhcp->tries <= 1) {</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  dhcp_check(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="comment">/* no ARP replies on the offered address,</span></div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="comment"> looks like the IP address is indeed free */</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="comment">/* bind the interface to the offered address */</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  dhcp_bind(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  }</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_DOES_ARP_CHECK */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a>) {</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keywordflow">if</span> (dhcp->tries < REBOOT_TRIES) {</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  dhcp_reboot(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  }</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  }</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span> }</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  </div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> dhcp_t1_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> {</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  </div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_t1_timeout()\n"</span>));</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordflow">if</span> ((dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8">DHCP_STATE_BOUND</a>) ||</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>)) {</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="comment">/* just retry to renew - note that the rebind timer (t2) will</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span> <span class="comment"> * eventually time-out if renew tries fail. */</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>,</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  (<span class="stringliteral">"dhcp_t1_timeout(): must renew\n"</span>));</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="comment">/* This slightly different to RFC2131: DHCPREQUEST will be sent from state</span></div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> <span class="comment"> DHCP_STATE_RENEWING, not DHCP_STATE_BOUND */</span></div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  dhcp_renew(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="comment">/* Calculate next timeout */</span></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">if</span> (((dhcp->t2_timeout - dhcp->lease_used) / 2) >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS))</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  {</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  dhcp->t1_renew_time = ((dhcp->t2_timeout - dhcp->lease_used) / 2);</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  }</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  }</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> }</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  </div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> dhcp_t2_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span> {</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  </div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_t2_timeout()\n"</span>));</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keywordflow">if</span> ((dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8">DHCP_STATE_BOUND</a>) ||</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>)) {</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="comment">/* just retry to rebind */</span></div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>,</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  (<span class="stringliteral">"dhcp_t2_timeout(): must rebind\n"</span>));</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="comment">/* This slightly different to RFC2131: DHCPREQUEST will be sent from state</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="comment"> DHCP_STATE_REBINDING, not DHCP_STATE_BOUND */</span></div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  dhcp_rebind(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="comment">/* Calculate next timeout */</span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keywordflow">if</span> (((dhcp->t0_timeout - dhcp->lease_used) / 2) >= ((60 + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS))</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  {</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  dhcp->t2_rebind_time = ((dhcp->t0_timeout - dhcp->lease_used) / 2);</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  }</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  }</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span> }</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  </div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> dhcp_handle_ack(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> {</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  </div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span> <span class="preprocessor">#if LWIP_DHCP_PROVIDE_DNS_SERVERS || LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> n;</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_PROVIDE_DNS_SERVERS || LWIP_DHCP_GET_NTP_SRV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> <span class="preprocessor">#if LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  ip4_addr_t ntp_server_addrs[<a class="code" href="lwipopts_8h.html#a9d014e3f7dc9e1e7c7decd8652ba65e2">LWIP_DHCP_MAX_NTP_SERVERS</a>];</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  </div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="comment">/* clear options we might not get from the ACK */</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  ip4_addr_set_zero(&dhcp->offered_sn_mask);</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  ip4_addr_set_zero(&dhcp->offered_gw_addr);</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span> <span class="preprocessor">#if LWIP_DHCP_BOOTP_FILE</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  ip4_addr_set_zero(&dhcp->offered_si_addr);</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_BOOTP_FILE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  </div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="comment">/* lease time given? */</span></div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_LEASE_TIME)) {</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="comment">/* remember offered lease time */</span></div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  dhcp->offered_t0_lease = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_LEASE_TIME);</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  }</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <span class="comment">/* renewal period given? */</span></div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_T1)) {</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">/* remember given renewal period */</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  dhcp->offered_t1_renew = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_T1);</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="comment">/* calculate safe periods for renewal */</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  dhcp->offered_t1_renew = dhcp->offered_t0_lease / 2;</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  </div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="comment">/* renewal period given? */</span></div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_T2)) {</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="comment">/* remember given rebind period */</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  dhcp->offered_t2_rebind = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_T2);</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="comment">/* calculate safe periods for rebinding (offered_t0_lease * 0.875 -> 87.5%)*/</span></div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  dhcp->offered_t2_rebind = (dhcp->offered_t0_lease * 7U) / 8U;</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  }</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  </div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <span class="comment">/* (y)our internet address */</span></div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  ip4_addr_copy(dhcp->offered_ip_addr, dhcp->msg_in->yiaddr);</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  </div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span> <span class="preprocessor">#if LWIP_DHCP_BOOTP_FILE</span></div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="comment">/* copy boot server address,</span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> <span class="comment"> boot file name copied in dhcp_parse_reply if not overloaded */</span></div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  ip4_addr_copy(dhcp->offered_si_addr, dhcp->msg_in->siaddr);</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_BOOTP_FILE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  </div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="comment">/* subnet mask given? */</span></div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_SUBNET_MASK)) {</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  <span class="comment">/* remember given subnet mask */</span></div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  ip4_addr_set_u32(&dhcp->offered_sn_mask, <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_SUBNET_MASK)));</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  dhcp->subnet_mask_given = 1;</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  dhcp->subnet_mask_given = 0;</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  }</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  </div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="comment">/* gateway router */</span></div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_ROUTER)) {</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  ip4_addr_set_u32(&dhcp->offered_gw_addr, <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_ROUTER)));</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  }</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  </div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span> <span class="preprocessor">#if LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="comment">/* NTP servers */</span></div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordflow">for</span> (n = 0; (n < <a class="code" href="lwipopts_8h.html#a9d014e3f7dc9e1e7c7decd8652ba65e2">LWIP_DHCP_MAX_NTP_SERVERS</a>) && dhcp_option_given(dhcp, DHCP_OPTION_IDX_NTP_SERVER + n); n++) {</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  ip4_addr_set_u32(&ntp_server_addrs[n], <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_NTP_SERVER + n)));</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  }</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  dhcp_set_ntp_servers(n, ntp_server_addrs);</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_GET_NTP_SRV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  </div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span> <span class="preprocessor">#if LWIP_DHCP_PROVIDE_DNS_SERVERS</span></div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="comment">/* DNS servers */</span></div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="keywordflow">for</span> (n = 0; (n < LWIP_DHCP_PROVIDE_DNS_SERVERS) && dhcp_option_given(dhcp, DHCP_OPTION_IDX_DNS_SERVER + n); n++) {</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> dns_addr;</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  ip_addr_set_ip4_u32(&dns_addr, <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_DNS_SERVER + n)));</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  dns_setserver(n, &dns_addr);</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  }</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_PROVIDE_DNS_SERVERS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span> }</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  </div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span> dhcp_set_struct(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> dhcp *dhcp)</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span> {</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"netif != NULL"</span>, <a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp != NULL"</span>, dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"netif already has a struct dhcp set"</span>, netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>) == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  </div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="comment">/* clear data structure */</span></div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <a class="code" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a>(dhcp, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> dhcp));</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="comment">/* dhcp_set_state(&dhcp, DHCP_STATE_OFF); */</span></div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  netif_set_client_data(<a class="code" href="structnetif.html">netif</a>, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, dhcp);</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span> }</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  </div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="keywordtype">void</span> dhcp_cleanup(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> {</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"netif != NULL"</span>, <a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  </div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keywordflow">if</span> (netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>) != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  <a class="code" href="mem_8h.html#a2fd7aa1adf6e394d3be7c7734e7df41a">mem_free</a>(netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  netif_set_client_data(<a class="code" href="structnetif.html">netif</a>, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  }</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span> }</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  </div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span> dhcp_start(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span> {</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="keyword">struct </span>dhcp *dhcp;</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  </div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"netif != NULL"</span>, (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"netif is not up, old style port?"</span>, <a class="code" href="group__netif.html#ga94a4c24c988afc0a577387730f303b19">netif_is_up</a>(<a class="code" href="structnetif.html">netif</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_start(netif=%p) %c%c%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0], <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1], (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ab7ef01e505dd2feb781fe86756b1c973">num</a>));</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="comment">/* check MTU of the netif */</span></div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> < DHCP_MAX_MSG_LEN_MIN_REQUIRED) {</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_start(): Cannot use this netif with DHCP: MTU is too small\n"</span>));</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  }</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  </div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="comment">/* no DHCP client attached yet? */</span></div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keywordflow">if</span> (dhcp == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_start(): mallocing new DHCP client\n"</span>));</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  dhcp = (<span class="keyword">struct </span>dhcp *)<a class="code" href="mem_8h.html#a932aa40d85b14cb7331625e012d12335">mem_malloc</a>(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> dhcp));</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keywordflow">if</span> (dhcp == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_start(): could not allocate dhcp\n"</span>));</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  }</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  </div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="comment">/* store this dhcp client in the netif */</span></div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  netif_set_client_data(<a class="code" href="structnetif.html">netif</a>, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, dhcp);</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_start(): allocated dhcp"</span>));</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="comment">/* already has DHCP client attached */</span></div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_start(): restarting DHCP configuration\n"</span>));</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf p_out wasn't freed"</span>, dhcp->p_out == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"reply wasn't freed"</span>, dhcp->msg_in == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> );</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  </div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="keywordflow">if</span> (dhcp->pcb_allocated != 0) {</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  dhcp_dec_pcb_refcount(); <span class="comment">/* free DHCP PCB if not needed any more */</span></div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  }</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="comment">/* dhcp is cleared below, no need to reset flag*/</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  }</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  </div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="comment">/* clear data structure */</span></div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <a class="code" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a>(dhcp, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> dhcp));</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="comment">/* dhcp_set_state(&dhcp, DHCP_STATE_OFF); */</span></div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  </div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_start(): starting DHCP configuration\n"</span>));</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  </div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keywordflow">if</span> (dhcp_inc_pcb_refcount() != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) { <span class="comment">/* ensure DHCP PCB is allocated */</span></div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  }</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  dhcp->pcb_allocated = 1;</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  </div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span> <span class="preprocessor">#if LWIP_DHCP_CHECK_LINK_UP</span></div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="keywordflow">if</span> (!<a class="code" href="netif_8h.html#a780be4c3fa9f7f2534f7865666c3a1b8">netif_is_link_up</a>(<a class="code" href="structnetif.html">netif</a>)) {</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="comment">/* set state INIT and wait for dhcp_network_changed() to call dhcp_discover() */</span></div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba04ab7401642e6e7d7dff940bf1c6ebc0">DHCP_STATE_INIT</a>);</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  }</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_CHECK_LINK_UP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  </div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  </div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="comment">/* (re)start the DHCP negotiation */</span></div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  result = dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">if</span> (result != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="comment">/* free resources allocated above */</span></div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  dhcp_stop(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  }</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span> }</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  </div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span> dhcp_inform(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span> {</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <span class="keyword">struct </span>dhcp dhcp;</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  </div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"netif != NULL"</span>, (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  </div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordflow">if</span> (dhcp_inc_pcb_refcount() != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) { <span class="comment">/* ensure DHCP PCB is allocated */</span></div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  }</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  </div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <a class="code" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a>(&dhcp, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> dhcp));</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  dhcp_set_state(&dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf9a6f1bd1a701f3047c542bde1d42ce8">DHCP_STATE_INFORMING</a>);</div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  </div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, &dhcp, <a class="code" href="prot_2dhcp_8h.html#aaea6a969c0da81c2611885514bbe433f">DHCP_INFORM</a>);</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  dhcp_option(&dhcp, <a class="code" href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a>, <a class="code" href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a>);</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  dhcp_option_short(&dhcp, DHCP_MAX_MSG_LEN(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  </div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  dhcp_option_trailer(&dhcp);</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  </div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp.p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp.options_out_len);</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  </div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_inform: INFORMING\n"</span>));</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  </div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  udp_sendto_if(dhcp_pcb, dhcp.p_out, IP_ADDR_BROADCAST, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  </div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  dhcp_delete_msg(&dhcp);</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"dhcp_inform: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  }</div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  </div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  dhcp_dec_pcb_refcount(); <span class="comment">/* delete DHCP PCB if not needed any more */</span></div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span> }</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  </div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span> dhcp_network_changed(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span> {</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  </div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  <span class="keywordflow">if</span> (!dhcp)</div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keywordflow">switch</span> (dhcp->state) {</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>:</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>:</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8">DHCP_STATE_BOUND</a>:</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a>:</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  dhcp->tries = 0;</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  dhcp_reboot(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba041a5104e13c4ccfe4982ca3aac677b1">DHCP_STATE_OFF</a>:</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  <span class="comment">/* stay off */</span></div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="comment">/* INIT/REQUESTING/CHECKING/BACKING_OFF restart with new 'rid' because the</span></div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span> <span class="comment"> state changes, SELECTING: continue with current 'rid' as we stay in the</span></div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span> <span class="comment"> same state */</span></div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span> <span class="preprocessor">#if LWIP_DHCP_AUTOIP_COOP</span></div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordflow">if</span> (dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_ON) {</div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  autoip_stop(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_OFF;</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  }</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_AUTOIP_COOP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="comment">/* ensure we start with short timeouts, even if already discovering */</span></div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  dhcp->tries = 0;</div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  dhcp_discover(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  }</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span> }</div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  </div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span> <span class="preprocessor">#if DHCP_DOES_ARP_CHECK</span></div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  </div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span> dhcp_arp_reply(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">const</span> ip4_addr_t *addr)</div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span> {</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="keyword">struct </span>dhcp *dhcp;</div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  </div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"netif != NULL"</span>, (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_arp_reply()\n"</span>));</div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">/* is a DHCP client doing an ARP check? */</span></div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordflow">if</span> ((dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba56d0710d1876bafdbf9a1c333d6d9ab9">DHCP_STATE_CHECKING</a>)) {</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_arp_reply(): CHECKING, arp reply for 0x%08"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  ip4_addr_get_u32(addr)));</div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="comment">/* did a host respond with the address we</span></div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span> <span class="comment"> were offered by the DHCP server? */</span></div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  <span class="keywordflow">if</span> (ip4_addr_cmp(addr, &dhcp->offered_ip_addr)) {</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="comment">/* we will not accept the offered address */</span></div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>,</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  (<span class="stringliteral">"dhcp_arp_reply(): arp reply matched with offered address, declining\n"</span>));</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  dhcp_decline(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  }</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  }</div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span> }</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  </div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span> dhcp_decline(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span> {</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_decline()\n"</span>));</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba2dcc3cf888f75285cdc86c3574e1af44">DHCP_STATE_BACKING_OFF</a>);</div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#ae7469660afdf7997c020f7fbf5164548">DHCP_DECLINE</a>);</div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a1cbad840414a6617ebdb17b1b9073597">DHCP_OPTION_REQUESTED_IP</a>, 4);</div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  dhcp_option_long(dhcp, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ip4_addr_get_u32(&dhcp->offered_ip_addr)));</div>
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  </div>
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="comment">/* resize pbuf to reflect true size of options */</span></div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  </div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="comment">/* per section 4.4.4, broadcast DECLINE messages */</span></div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  udp_sendto_if_src(dhcp_pcb, dhcp->p_out, IP_ADDR_BROADCAST, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>, IP4_ADDR_ANY);</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_decline: BACKING OFF\n"</span>));</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  (<span class="stringliteral">"dhcp_decline: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  }</div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  dhcp->tries++;</div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  }</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  msecs = 10*1000;</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_decline(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span> }</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_DOES_ARP_CHECK */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  </div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  </div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span> dhcp_discover(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span> {</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_discover()\n"</span>));</div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  ip4_addr_set_any(&dhcp->offered_ip_addr);</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba8a0dca73b4731e6e475dbedc75082bc5">DHCP_STATE_SELECTING</a>);</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#a368aca81d0a71853aa3939f546cc25ae">DHCP_DISCOVER</a>);</div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_discover: making request\n"</span>));</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  </div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a>, <a class="code" href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a>);</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  dhcp_option_short(dhcp, DHCP_MAX_MSG_LEN(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  </div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a8b484e555c18f2d20df9a2267f35bced">DHCP_OPTION_PARAMETER_REQUEST_LIST</a>, <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options));</div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options); i++) {</div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  dhcp_option_byte(dhcp, dhcp_discover_request_options[i]);</div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  }</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  </div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_discover: realloc()ing\n"</span>));</div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  </div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_discover: sendto(DISCOVER, IP_ADDR_BROADCAST, DHCP_SERVER_PORT)\n"</span>));</div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  udp_sendto_if_src(dhcp_pcb, dhcp->p_out, IP_ADDR_BROADCAST, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>, IP4_ADDR_ANY);</div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_discover: deleting()ing\n"</span>));</div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_discover: SELECTING\n"</span>));</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"dhcp_discover: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  }</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  dhcp->tries++;</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  }</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span> <span class="preprocessor">#if LWIP_DHCP_AUTOIP_COOP</span></div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  <span class="keywordflow">if</span> (dhcp->tries >= <a class="code" href="lwipopts_8h.html#a4ff3f941b4c71a04b0c30fbee5b198c2">LWIP_DHCP_AUTOIP_COOP_TRIES</a> && dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_OFF) {</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_ON;</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  autoip_start(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  }</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_AUTOIP_COOP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  msecs = (dhcp->tries < 6 ? 1 << dhcp->tries : 60) * 1000;</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_discover(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span> }</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  </div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  </div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span> dhcp_bind(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span> {</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> timeout;</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <span class="keyword">struct </span>dhcp *dhcp;</div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  ip4_addr_t sn_mask, gw_addr;</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_bind: netif != NULL"</span>, (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_bind: dhcp != NULL"</span>, (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_bind(netif=%p) %c%c%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0], <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1], (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ab7ef01e505dd2feb781fe86756b1c973">num</a>));</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  </div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <span class="comment">/* reset time used of lease */</span></div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  dhcp->lease_used = 0;</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  </div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <span class="keywordflow">if</span> (dhcp->offered_t0_lease != 0xffffffffUL) {</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  <span class="comment">/* set renewal period timer */</span></div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_bind(): t0 renewal timer %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" secs\n"</span>, dhcp->offered_t0_lease));</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  timeout = (dhcp->offered_t0_lease + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS;</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  <span class="keywordflow">if</span> (timeout > 0xffff) {</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  timeout = 0xffff;</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  }</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  dhcp->t0_timeout = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)timeout;</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  <span class="keywordflow">if</span> (dhcp->t0_timeout == 0) {</div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  dhcp->t0_timeout = 1;</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  }</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_bind(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" msecs\n"</span>, dhcp->offered_t0_lease*1000));</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  }</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  </div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  <span class="comment">/* temporary DHCP lease? */</span></div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="keywordflow">if</span> (dhcp->offered_t1_renew != 0xffffffffUL) {</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  <span class="comment">/* set renewal period timer */</span></div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_bind(): t1 renewal timer %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" secs\n"</span>, dhcp->offered_t1_renew));</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  timeout = (dhcp->offered_t1_renew + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS;</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  <span class="keywordflow">if</span> (timeout > 0xffff) {</div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  timeout = 0xffff;</div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  }</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  dhcp->t1_timeout = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)timeout;</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="keywordflow">if</span> (dhcp->t1_timeout == 0) {</div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  dhcp->t1_timeout = 1;</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  }</div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_bind(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" msecs\n"</span>, dhcp->offered_t1_renew*1000));</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  dhcp->t1_renew_time = dhcp->t1_timeout;</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  }</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <span class="comment">/* set renewal period timer */</span></div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  <span class="keywordflow">if</span> (dhcp->offered_t2_rebind != 0xffffffffUL) {</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_bind(): t2 rebind timer %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" secs\n"</span>, dhcp->offered_t2_rebind));</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  timeout = (dhcp->offered_t2_rebind + DHCP_COARSE_TIMER_SECS / 2) / DHCP_COARSE_TIMER_SECS;</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  <span class="keywordflow">if</span> (timeout > 0xffff) {</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  timeout = 0xffff;</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  }</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  dhcp->t2_timeout = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)timeout;</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  <span class="keywordflow">if</span> (dhcp->t2_timeout == 0) {</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  dhcp->t2_timeout = 1;</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  }</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_bind(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" msecs\n"</span>, dhcp->offered_t2_rebind*1000));</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  dhcp->t2_rebind_time = dhcp->t2_timeout;</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  }</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  </div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="comment">/* If we have sub 1 minute lease, t2 and t1 will kick in at the same time. */</span></div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  <span class="keywordflow">if</span> ((dhcp->t1_timeout >= dhcp->t2_timeout) && (dhcp->t2_timeout > 0)) {</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  dhcp->t1_timeout = 0;</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  }</div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  </div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="keywordflow">if</span> (dhcp->subnet_mask_given) {</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  <span class="comment">/* copy offered network mask */</span></div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  ip4_addr_copy(sn_mask, dhcp->offered_sn_mask);</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  <span class="comment">/* subnet mask not given, choose a safe subnet mask given the network class */</span></div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> first_octet = ip4_addr1(&dhcp->offered_ip_addr);</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  <span class="keywordflow">if</span> (first_octet <= 127) {</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  ip4_addr_set_u32(&sn_mask, <a class="code" href="def_8h.html#afea9c21aa1f56180cdf6fb42ef14a294">PP_HTONL</a>(0xff000000UL));</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (first_octet >= 192) {</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  ip4_addr_set_u32(&sn_mask, <a class="code" href="def_8h.html#afea9c21aa1f56180cdf6fb42ef14a294">PP_HTONL</a>(0xffffff00UL));</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  ip4_addr_set_u32(&sn_mask, <a class="code" href="def_8h.html#afea9c21aa1f56180cdf6fb42ef14a294">PP_HTONL</a>(0xffff0000UL));</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  }</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  }</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  </div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  ip4_addr_copy(gw_addr, dhcp->offered_gw_addr);</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  <span class="comment">/* gateway address not given? */</span></div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  <span class="keywordflow">if</span> (ip4_addr_isany_val(gw_addr)) {</div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  <span class="comment">/* copy network address */</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  ip4_addr_get_network(&gw_addr, &dhcp->offered_ip_addr, &sn_mask);</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  <span class="comment">/* use first host address on network as gateway */</span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  ip4_addr_set_u32(&gw_addr, ip4_addr_get_u32(&gw_addr) | <a class="code" href="def_8h.html#afea9c21aa1f56180cdf6fb42ef14a294">PP_HTONL</a>(0x00000001UL));</div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  }</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  </div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span> <span class="preprocessor">#if LWIP_DHCP_AUTOIP_COOP</span></div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <span class="keywordflow">if</span> (dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_ON) {</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  autoip_stop(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_OFF;</div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  }</div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_AUTOIP_COOP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  </div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_bind(): IP: 0x%08"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">" SN: 0x%08"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">" GW: 0x%08"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  ip4_addr_get_u32(&dhcp->offered_ip_addr), ip4_addr_get_u32(&sn_mask), ip4_addr_get_u32(&gw_addr)));</div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  <span class="comment">/* netif is now bound to DHCP leased address - set this before assigning the address</span></div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span> <span class="comment"> to ensure the callback can use dhcp_supplied_address() */</span></div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8">DHCP_STATE_BOUND</a>);</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  </div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  netif_set_addr(<a class="code" href="structnetif.html">netif</a>, &dhcp->offered_ip_addr, &sn_mask, &gw_addr);</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="comment">/* interface is used by routing now that an address is set */</span></div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span> }</div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  </div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span> dhcp_renew(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span> {</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_renew()\n"</span>));</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>);</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  </div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a>);</div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a>, <a class="code" href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a>);</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  dhcp_option_short(dhcp, DHCP_MAX_MSG_LEN(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  </div>
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a8b484e555c18f2d20df9a2267f35bced">DHCP_OPTION_PARAMETER_REQUEST_LIST</a>, <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options));</div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options); i++) {</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  dhcp_option_byte(dhcp, dhcp_discover_request_options[i]);</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  }</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  </div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span> <span class="preprocessor">#if LWIP_NETIF_HOSTNAME</span></div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  dhcp_option_hostname(dhcp, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_NETIF_HOSTNAME */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  </div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <span class="comment">/* append DHCP message trailer */</span></div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  </div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  </div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  udp_sendto_if(dhcp_pcb, dhcp->p_out, &dhcp->server_ip_addr, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  </div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_renew: RENEWING\n"</span>));</div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"dhcp_renew: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  }</div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  dhcp->tries++;</div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  }</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  <span class="comment">/* back-off on retries, but to a maximum of 20 seconds */</span></div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  msecs = dhcp->tries < 10 ? dhcp->tries * 2000 : 20 * 1000;</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_renew(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span> }</div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  </div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span> dhcp_rebind(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span> {</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_rebind()\n"</span>));</div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>);</div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  </div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a>);</div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a>, <a class="code" href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a>);</div>
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  dhcp_option_short(dhcp, DHCP_MAX_MSG_LEN(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  </div>
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a8b484e555c18f2d20df9a2267f35bced">DHCP_OPTION_PARAMETER_REQUEST_LIST</a>, <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options));</div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options); i++) {</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  dhcp_option_byte(dhcp, dhcp_discover_request_options[i]);</div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  }</div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  </div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span> <span class="preprocessor">#if LWIP_NETIF_HOSTNAME</span></div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  dhcp_option_hostname(dhcp, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_NETIF_HOSTNAME */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  </div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  </div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  </div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  <span class="comment">/* broadcast to server */</span></div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  udp_sendto_if(dhcp_pcb, dhcp->p_out, IP_ADDR_BROADCAST, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_rebind: REBINDING\n"</span>));</div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"dhcp_rebind: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  }</div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  dhcp->tries++;</div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  }</div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  msecs = dhcp->tries < 10 ? dhcp->tries * 1000 : 10 * 1000;</div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_rebind(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span> }</div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  </div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span> dhcp_reboot(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span> {</div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> msecs;</div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_reboot()\n"</span>));</div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a>);</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  </div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a>);</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a>, <a class="code" href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a>);</div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  dhcp_option_short(dhcp, DHCP_MAX_MSG_LEN_MIN_REQUIRED);</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  </div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a1cbad840414a6617ebdb17b1b9073597">DHCP_OPTION_REQUESTED_IP</a>, 4);</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  dhcp_option_long(dhcp, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ip4_addr_get_u32(&dhcp->offered_ip_addr)));</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  </div>
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a8b484e555c18f2d20df9a2267f35bced">DHCP_OPTION_PARAMETER_REQUEST_LIST</a>, <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options));</div>
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(dhcp_discover_request_options); i++) {</div>
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  dhcp_option_byte(dhcp, dhcp_discover_request_options[i]);</div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  }</div>
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  </div>
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  </div>
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  </div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  <span class="comment">/* broadcast to server */</span></div>
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  udp_sendto_if(dhcp_pcb, dhcp->p_out, IP_ADDR_BROADCAST, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_reboot: REBOOTING\n"</span>));</div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"dhcp_reboot: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  }</div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  <span class="keywordflow">if</span> (dhcp->tries < 255) {</div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  dhcp->tries++;</div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  }</div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  msecs = dhcp->tries < 10 ? dhcp->tries * 1000 : 10 * 1000;</div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  dhcp->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;</div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_reboot(): set request timeout %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" msecs\n"</span>, msecs));</div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span> }</div>
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  </div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  </div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span> dhcp_release(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span> {</div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> result;</div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> server_ip_addr;</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> is_dhcp_supplied_address;</div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  </div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_release()\n"</span>));</div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  <span class="keywordflow">if</span> (dhcp == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  }</div>
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(server_ip_addr, dhcp->server_ip_addr);</div>
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  </div>
<div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  is_dhcp_supplied_address = dhcp_supplied_address(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>  </div>
<div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  <span class="comment">/* idle DHCP client */</span></div>
<div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba041a5104e13c4ccfe4982ca3aac677b1">DHCP_STATE_OFF</a>);</div>
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  <span class="comment">/* clean old DHCP offer */</span></div>
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  ip_addr_set_zero_ip4(&dhcp->server_ip_addr);</div>
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  ip4_addr_set_zero(&dhcp->offered_ip_addr);</div>
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  ip4_addr_set_zero(&dhcp->offered_sn_mask);</div>
<div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  ip4_addr_set_zero(&dhcp->offered_gw_addr);</div>
<div class="line"><a name="l01302"></a><span class="lineno"> 1302</span> <span class="preprocessor">#if LWIP_DHCP_BOOTP_FILE</span></div>
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  ip4_addr_set_zero(&dhcp->offered_si_addr);</div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_BOOTP_FILE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  dhcp->offered_t0_lease = dhcp->offered_t1_renew = dhcp->offered_t2_rebind = 0;</div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  dhcp->t1_renew_time = dhcp->t2_rebind_time = dhcp->lease_used = dhcp->t0_timeout = 0;</div>
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  </div>
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  <span class="keywordflow">if</span> (!is_dhcp_supplied_address) {</div>
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  <span class="comment">/* don't issue release message when address is not dhcp-assigned */</span></div>
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  }</div>
<div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>  </div>
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  <span class="comment">/* create and initialize the DHCP message header */</span></div>
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  result = dhcp_create_msg(<a class="code" href="structnetif.html">netif</a>, dhcp, <a class="code" href="prot_2dhcp_8h.html#ae629d2dc5df40f03ea87cc94a5e3f3eb">DHCP_RELEASE</a>);</div>
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  <span class="keywordflow">if</span> (result == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a3bdf84c273501fb73ad217dcab87bb4a">DHCP_OPTION_SERVER_ID</a>, 4);</div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  dhcp_option_long(dhcp, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ip4_addr_get_u32(ip_2_ip4(&server_ip_addr))));</div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  </div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>  dhcp_option_trailer(dhcp);</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  </div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(dhcp->p_out, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>) - <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> + dhcp->options_out_len);</div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  </div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  udp_sendto_if(dhcp_pcb, dhcp->p_out, &server_ip_addr, <a class="code" href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a>, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  dhcp_delete_msg(dhcp);</div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"dhcp_release: RELEASED, DHCP_STATE_OFF\n"</span>));</div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  <span class="comment">/* sending release failed, but that's not a problem since the correct behaviour of dhcp does not rely on release */</span></div>
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"dhcp_release: could not allocate DHCP request\n"</span>));</div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  }</div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <span class="comment">/* remove IP address from interface (prevents routing from selecting this interface) */</span></div>
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  netif_set_addr(<a class="code" href="structnetif.html">netif</a>, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4);</div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  </div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span> }</div>
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  </div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span> dhcp_stop(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span> {</div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  <span class="keyword">struct </span>dhcp *dhcp;</div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_stop: netif != NULL"</span>, (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  </div>
<div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_stop()\n"</span>));</div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  <span class="comment">/* netif is DHCP configured? */</span></div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="keywordflow">if</span> (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span> <span class="preprocessor">#if LWIP_DHCP_AUTOIP_COOP</span></div>
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  <span class="keywordflow">if</span> (dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_ON) {</div>
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  autoip_stop(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_OFF;</div>
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  }</div>
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_AUTOIP_COOP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  </div>
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"reply wasn't freed"</span>, dhcp->msg_in == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  dhcp_set_state(dhcp, <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba041a5104e13c4ccfe4982ca3aac677b1">DHCP_STATE_OFF</a>);</div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  </div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  <span class="keywordflow">if</span> (dhcp->pcb_allocated != 0) {</div>
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  dhcp_dec_pcb_refcount(); <span class="comment">/* free DHCP PCB if not needed any more */</span></div>
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  dhcp->pcb_allocated = 0;</div>
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  }</div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  }</div>
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span> }</div>
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  </div>
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span> <span class="comment">/*</span></div>
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span> <span class="comment"> * Set the DHCP state of a DHCP client.</span></div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span> <span class="comment"> *</span></div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span> <span class="comment"> * If the state changed, reset the number of tries.</span></div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span> dhcp_set_state(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> new_state)</div>
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span> {</div>
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  <span class="keywordflow">if</span> (new_state != dhcp->state) {</div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  dhcp->state = new_state;</div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  dhcp->tries = 0;</div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  dhcp->request_timeout = 0;</div>
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  }</div>
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span> }</div>
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  </div>
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span> <span class="comment">/*</span></div>
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span> <span class="comment"> * Concatenate an option type and length field to the outgoing</span></div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span> <span class="comment"> * DHCP message.</span></div>
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span> <span class="comment"> *</span></div>
<div class="line"><a name="l01388"></a><span class="lineno"> 1388</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span> dhcp_option(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> option_type, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> option_len)</div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span> {</div>
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_option: dhcp->options_out_len + 2 + option_len <= DHCP_OPTIONS_LEN"</span>, dhcp->options_out_len + 2U + option_len <= <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>);</div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  dhcp->msg_out->options[dhcp->options_out_len++] = option_type;</div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  dhcp->msg_out->options[dhcp->options_out_len++] = option_len;</div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span> }</div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span> <span class="comment">/*</span></div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span> <span class="comment"> * Concatenate a single byte to the outgoing DHCP message.</span></div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span> <span class="comment"> *</span></div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span> dhcp_option_byte(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> value)</div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span> {</div>
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_option_byte: dhcp->options_out_len < DHCP_OPTIONS_LEN"</span>, dhcp->options_out_len < <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>);</div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  dhcp->msg_out->options[dhcp->options_out_len++] = value;</div>
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span> }</div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  </div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span> dhcp_option_short(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> value)</div>
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span> {</div>
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_option_short: dhcp->options_out_len + 2 <= DHCP_OPTIONS_LEN"</span>, dhcp->options_out_len + 2U <= <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>);</div>
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  dhcp->msg_out->options[dhcp->options_out_len++] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)((value & 0xff00U) >> 8);</div>
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  dhcp->msg_out->options[dhcp->options_out_len++] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>) (value & 0x00ffU);</div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span> }</div>
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  </div>
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span> dhcp_option_long(<span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> value)</div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span> {</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_option_long: dhcp->options_out_len + 4 <= DHCP_OPTIONS_LEN"</span>, dhcp->options_out_len + 4U <= <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>);</div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  dhcp->msg_out->options[dhcp->options_out_len++] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)((value & 0xff000000UL) >> 24);</div>
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  dhcp->msg_out->options[dhcp->options_out_len++] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)((value & 0x00ff0000UL) >> 16);</div>
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  dhcp->msg_out->options[dhcp->options_out_len++] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)((value & 0x0000ff00UL) >> 8);</div>
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  dhcp->msg_out->options[dhcp->options_out_len++] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)((value & 0x000000ffUL));</div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span> }</div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  </div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span> <span class="preprocessor">#if LWIP_NETIF_HOSTNAME</span></div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span> dhcp_option_hostname(<span class="keyword">struct</span> dhcp *dhcp, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span> {</div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a>->hostname != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  <span class="keywordtype">size_t</span> namelen = <a class="code" href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a>(<a class="code" href="structnetif.html">netif</a>->hostname);</div>
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  <span class="keywordflow">if</span> (namelen > 0) {</div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *p = <a class="code" href="structnetif.html">netif</a>->hostname;</div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  <span class="comment">/* Shrink len to available bytes (need 2 bytes for OPTION_HOSTNAME</span></div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span> <span class="comment"> and 1 byte for trailer) */</span></div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  <span class="keywordtype">size_t</span> available = <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a> - dhcp->options_out_len - 3;</div>
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"DHCP: hostname is too long!"</span>, namelen <= available);</div>
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  len = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(namelen, available);</div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"DHCP: hostname is too long!"</span>, len <= 0xFF);</div>
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#a8336c0e435dd07302c1b433d2c9197be">DHCP_OPTION_HOSTNAME</a>, (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)len);</div>
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  <span class="keywordflow">while</span> (len--) {</div>
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  dhcp_option_byte(dhcp, *p++);</div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  }</div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  }</div>
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  }</div>
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span> }</div>
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_NETIF_HOSTNAME */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  </div>
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span> dhcp_parse_reply(<span class="keyword">struct</span> dhcp *dhcp, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p)</div>
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span> {</div>
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *options;</div>
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset;</div>
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset_max;</div>
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> options_idx;</div>
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> options_idx_max;</div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q;</div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  <span class="keywordtype">int</span> parse_file_as_options = 0;</div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  <span class="keywordtype">int</span> parse_sname_as_options = 0;</div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  </div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  <span class="comment">/* clear received options */</span></div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  dhcp_clear_all_options(dhcp);</div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  <span class="comment">/* check that beginning of dhcp_msg (up to and including chaddr) is in first pbuf */</span></div>
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> < <a class="code" href="prot_2dhcp_8h.html#a370421b9ce80052774e0dd8a6437a025">DHCP_SNAME_OFS</a>) {</div>
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a>;</div>
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  }</div>
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  dhcp->msg_in = (<span class="keyword">struct </span><a class="code" href="structdhcp__msg.html">dhcp_msg</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#a3c2983cbd228011dd3e18cb417e7e423">LWIP_DHCP_BOOTP_FILE</a></div>
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  <span class="comment">/* clear boot file name */</span></div>
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  dhcp->boot_file_name[0] = 0;</div>
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span> #endif <span class="comment">/* LWIP_DHCP_BOOTP_FILE */</span></div>
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>  </div>
<div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  <span class="comment">/* parse options */</span></div>
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  </div>
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  <span class="comment">/* start with options field */</span></div>
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  options_idx = <a class="code" href="prot_2dhcp_8h.html#af5e2f617c0b6005fb50db9851797be1b">DHCP_OPTIONS_OFS</a>;</div>
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  <span class="comment">/* parse options to the end of the received packet */</span></div>
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  options_idx_max = p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span> again:</div>
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  q = p;</div>
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>  while ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (options_idx >= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  options_idx -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  options_idx_max -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  q = q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  }</div>
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  <span class="keywordflow">if</span> (q == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a>;</div>
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  }</div>
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  offset = options_idx;</div>
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  offset_max = options_idx_max;</div>
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  options = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  <span class="comment">/* at least 1 byte to read and no end marker, then at least 3 bytes to read? */</span></div>
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  while ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (offset < offset_max) && (options[offset] != <a class="code" href="prot_2dhcp_8h.html#aea2eb67064efec2c65fff4497f659e7d">DHCP_OPTION_END</a>)) {</div>
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> op = options[offset];</div>
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> len;</div>
<div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> decode_len = 0;</div>
<div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  <span class="keywordtype">int</span> decode_idx = -1;</div>
<div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> val_offset = offset + 2;</div>
<div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  <span class="comment">/* len byte might be in the next pbuf */</span></div>
<div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  <span class="keywordflow">if</span> ((offset + 1) < q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) {</div>
<div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  len = options[offset + 1];</div>
<div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  len = (q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> ? ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>)[0] : 0);</div>
<div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>  }</div>
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  <span class="comment">/* LWIP_DEBUGF(DHCP_DEBUG, ("msg_offset=%"U16_F", q->len=%"U16_F, msg_offset, q->len)); */</span></div>
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  decode_len = len;</div>
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  <span class="keywordflow">switch</span>(op) {</div>
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  <span class="comment">/* case(DHCP_OPTION_END): handled above */</span></div>
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#afcfde7a8c1ec0e3055d9a01ef2fa6aa9">DHCP_OPTION_PAD</a>):</div>
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  <span class="comment">/* special option: no len encoded */</span></div>
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  decode_len = len = 0;</div>
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  <span class="comment">/* will be increased below */</span></div>
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  offset--;</div>
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#acff5b8c45e6d63afd973aa8a0e72a901">DHCP_OPTION_SUBNET_MASK</a>):</div>
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 4"</span>, len == 4, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  decode_idx = DHCP_OPTION_IDX_SUBNET_MASK;</div>
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#a72cfc4e231017d1d116bb1d69d18ae8c">DHCP_OPTION_ROUTER</a>):</div>
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  decode_len = 4; <span class="comment">/* only copy the first given router */</span></div>
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len >= decode_len"</span>, len >= decode_len, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  decode_idx = DHCP_OPTION_IDX_ROUTER;</div>
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span> <span class="preprocessor">#if LWIP_DHCP_PROVIDE_DNS_SERVERS</span></div>
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#a8f05c5c6084fbac0be7b24101189232b">DHCP_OPTION_DNS_SERVER</a>):</div>
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  <span class="comment">/* special case: there might be more than one server */</span></div>
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len %% 4 == 0"</span>, len % 4 == 0, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  <span class="comment">/* limit number of DNS servers */</span></div>
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  decode_len = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(len, 4 * <a class="code" href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a>);</div>
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len >= decode_len"</span>, len >= decode_len, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  decode_idx = DHCP_OPTION_IDX_DNS_SERVER;</div>
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_PROVIDE_DNS_SERVERS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#a458994de9415a8a622d1a560bfd9ace4">DHCP_OPTION_LEASE_TIME</a>):</div>
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 4"</span>, len == 4, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  decode_idx = DHCP_OPTION_IDX_LEASE_TIME;</div>
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span> <span class="preprocessor">#if LWIP_DHCP_GET_NTP_SRV</span></div>
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#ae5a724660dd11c27d8ed477f0ee136e3">DHCP_OPTION_NTP</a>):</div>
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  <span class="comment">/* special case: there might be more than one server */</span></div>
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len %% 4 == 0"</span>, len % 4 == 0, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  <span class="comment">/* limit number of NTP servers */</span></div>
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  decode_len = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(len, 4 * <a class="code" href="lwipopts_8h.html#a9d014e3f7dc9e1e7c7decd8652ba65e2">LWIP_DHCP_MAX_NTP_SERVERS</a>);</div>
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len >= decode_len"</span>, len >= decode_len, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  decode_idx = DHCP_OPTION_IDX_NTP_SERVER;</div>
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_GET_NTP_SRV*/</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#afa25c2c462288d2ab8cec19d22af661f">DHCP_OPTION_OVERLOAD</a>):</div>
<div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 1"</span>, len == 1, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  <span class="comment">/* decode overload only in options, not in file/sname: invalid packet */</span></div>
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"overload in file/sname"</span>, options_idx == <a class="code" href="prot_2dhcp_8h.html#af5e2f617c0b6005fb50db9851797be1b">DHCP_OPTIONS_OFS</a>, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  decode_idx = DHCP_OPTION_IDX_OVERLOAD;</div>
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#ab023a7a8b3307a68a2eff10a217e48a8">DHCP_OPTION_MESSAGE_TYPE</a>):</div>
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 1"</span>, len == 1, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  decode_idx = DHCP_OPTION_IDX_MSG_TYPE;</div>
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#a3bdf84c273501fb73ad217dcab87bb4a">DHCP_OPTION_SERVER_ID</a>):</div>
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 4"</span>, len == 4, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  decode_idx = DHCP_OPTION_IDX_SERVER_ID;</div>
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#ac32aa14a7fed99bcff08d10ca2dafc4d">DHCP_OPTION_T1</a>):</div>
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 4"</span>, len == 4, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>  decode_idx = DHCP_OPTION_IDX_T1;</div>
<div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>  <span class="keywordflow">case</span>(<a class="code" href="prot_2dhcp_8h.html#ab9a44c5141f2c790f94ec2dd8a1a4f7e">DHCP_OPTION_T2</a>):</div>
<div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"len == 4"</span>, len == 4, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  decode_idx = DHCP_OPTION_IDX_T2;</div>
<div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  decode_len = 0;</div>
<div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a>, (<span class="stringliteral">"skipping option %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" in options\n"</span>, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)op));</div>
<div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  }</div>
<div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>  offset += len + 2;</div>
<div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  <span class="keywordflow">if</span> (decode_len > 0) {</div>
<div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> value = 0;</div>
<div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> copy_len;</div>
<div class="line"><a name="l01589"></a><span class="lineno"> 1589</span> decode_next:</div>
<div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"check decode_idx"</span>, decode_idx >= 0 && decode_idx < DHCP_OPTION_IDX_MAX);</div>
<div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  <span class="keywordflow">if</span> (!dhcp_option_given(dhcp, decode_idx)) {</div>
<div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>  copy_len = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(decode_len, 4);</div>
<div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(q, &value, copy_len, val_offset) != copy_len) {</div>
<div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a>;</div>
<div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>  }</div>
<div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  <span class="keywordflow">if</span> (decode_len > 4) {</div>
<div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  <span class="comment">/* decode more than one u32_t */</span></div>
<div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"decode_len %% 4 == 0"</span>, decode_len % 4 == 0, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  dhcp_got_option(dhcp, decode_idx);</div>
<div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>  dhcp_set_option_value(dhcp, decode_idx, <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(value));</div>
<div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  decode_len -= 4;</div>
<div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  val_offset += 4;</div>
<div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  decode_idx++;</div>
<div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  <span class="keywordflow">goto</span> decode_next;</div>
<div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (decode_len == 4) {</div>
<div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  value = <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(value);</div>
<div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"invalid decode_len"</span>, decode_len == 1, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  value = ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)&value)[0];</div>
<div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>  }</div>
<div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  dhcp_got_option(dhcp, decode_idx);</div>
<div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  dhcp_set_option_value(dhcp, decode_idx, value);</div>
<div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  }</div>
<div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>  }</div>
<div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  <span class="keywordflow">if</span> (offset >= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) {</div>
<div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  offset -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  offset_max -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>  <span class="keywordflow">if</span> ((offset < offset_max) && offset_max) {</div>
<div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  q = q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"next pbuf was null"</span>, q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  options = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  <span class="comment">/* We've run out of bytes, probably no end marker. Don't proceed. */</span></div>
<div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>  }</div>
<div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  }</div>
<div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>  }</div>
<div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>  <span class="comment">/* is this an overloaded message? */</span></div>
<div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_OVERLOAD)) {</div>
<div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> overload = dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_OVERLOAD);</div>
<div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>  dhcp_clear_option(dhcp, DHCP_OPTION_IDX_OVERLOAD);</div>
<div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>  <span class="keywordflow">if</span> (overload == <a class="code" href="prot_2dhcp_8h.html#a04a7b3f1d9138c82c51f2752d440c13e">DHCP_OVERLOAD_FILE</a>) {</div>
<div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>  parse_file_as_options = 1;</div>
<div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"overloaded file field\n"</span>));</div>
<div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (overload == <a class="code" href="prot_2dhcp_8h.html#a76d647c8774a4169ac92e01400bbb6ea">DHCP_OVERLOAD_SNAME</a>) {</div>
<div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>  parse_sname_as_options = 1;</div>
<div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"overloaded sname field\n"</span>));</div>
<div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (overload == <a class="code" href="prot_2dhcp_8h.html#a07ea61064695eda45483c4c0a192614c">DHCP_OVERLOAD_SNAME_FILE</a>) {</div>
<div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>  parse_sname_as_options = 1;</div>
<div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>  parse_file_as_options = 1;</div>
<div class="line"><a name="l01641"></a><span class="lineno"> 1641</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"overloaded sname and file field\n"</span>));</div>
<div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"invalid overload option: %d\n"</span>, (<span class="keywordtype">int</span>)overload));</div>
<div class="line"><a name="l01644"></a><span class="lineno"> 1644</span>  }</div>
<div class="line"><a name="l01645"></a><span class="lineno"> 1645</span> <span class="preprocessor">#if LWIP_DHCP_BOOTP_FILE</span></div>
<div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>  <span class="keywordflow">if</span> (!parse_file_as_options) {</div>
<div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>  <span class="comment">/* only do this for ACK messages */</span></div>
<div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>  <span class="keywordflow">if</span> (dhcp_option_given(dhcp, DHCP_OPTION_IDX_MSG_TYPE) &&</div>
<div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>  (dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_MSG_TYPE) == <a class="code" href="prot_2dhcp_8h.html#a3cca70105d2c42c3381829f456446e0e">DHCP_ACK</a>))</div>
<div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>  <span class="comment">/* copy bootp file name, don't care for sname (server hostname) */</span></div>
<div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, dhcp->boot_file_name, <a class="code" href="prot_2dhcp_8h.html#a4ffd004c5d53666e9315d9571af6d41b">DHCP_FILE_LEN</a>-1, <a class="code" href="prot_2dhcp_8h.html#a87e51df90840a08fe0a3602d126ebfe3">DHCP_FILE_OFS</a>) != (<a class="code" href="prot_2dhcp_8h.html#a4ffd004c5d53666e9315d9571af6d41b">DHCP_FILE_LEN</a>-1)) {</div>
<div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a>;</div>
<div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>  }</div>
<div class="line"><a name="l01654"></a><span class="lineno"> 1654</span>  <span class="comment">/* make sure the string is really NULL-terminated */</span></div>
<div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>  dhcp->boot_file_name[<a class="code" href="prot_2dhcp_8h.html#a4ffd004c5d53666e9315d9571af6d41b">DHCP_FILE_LEN</a>-1] = 0;</div>
<div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>  }</div>
<div class="line"><a name="l01657"></a><span class="lineno"> 1657</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DHCP_BOOTP_FILE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01658"></a><span class="lineno"> 1658</span>  }</div>
<div class="line"><a name="l01659"></a><span class="lineno"> 1659</span>  <span class="keywordflow">if</span> (parse_file_as_options) {</div>
<div class="line"><a name="l01660"></a><span class="lineno"> 1660</span>  <span class="comment">/* if both are overloaded, parse file first and then sname (RFC 2131 ch. 4.1) */</span></div>
<div class="line"><a name="l01661"></a><span class="lineno"> 1661</span>  parse_file_as_options = 0;</div>
<div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>  options_idx = <a class="code" href="prot_2dhcp_8h.html#a87e51df90840a08fe0a3602d126ebfe3">DHCP_FILE_OFS</a>;</div>
<div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>  options_idx_max = <a class="code" href="prot_2dhcp_8h.html#a87e51df90840a08fe0a3602d126ebfe3">DHCP_FILE_OFS</a> + <a class="code" href="prot_2dhcp_8h.html#a4ffd004c5d53666e9315d9571af6d41b">DHCP_FILE_LEN</a>;</div>
<div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>  <span class="keywordflow">goto</span> again;</div>
<div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (parse_sname_as_options) {</div>
<div class="line"><a name="l01666"></a><span class="lineno"> 1666</span>  parse_sname_as_options = 0;</div>
<div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>  options_idx = <a class="code" href="prot_2dhcp_8h.html#a370421b9ce80052774e0dd8a6437a025">DHCP_SNAME_OFS</a>;</div>
<div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>  options_idx_max = <a class="code" href="prot_2dhcp_8h.html#a370421b9ce80052774e0dd8a6437a025">DHCP_SNAME_OFS</a> + <a class="code" href="prot_2dhcp_8h.html#a4227e9baee8b09567d1d9dda9d8a8cf3">DHCP_SNAME_LEN</a>;</div>
<div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>  <span class="keywordflow">goto</span> again;</div>
<div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>  }</div>
<div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01672"></a><span class="lineno"> 1672</span> }</div>
<div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>  </div>
<div class="line"><a name="l01677"></a><span class="lineno"> 1677</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01678"></a><span class="lineno"> 1678</span> dhcp_recv(<span class="keywordtype">void</span> *arg, <span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port)</div>
<div class="line"><a name="l01679"></a><span class="lineno"> 1679</span> {</div>
<div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a> = <a class="code" href="ip_8h.html#ae214afa9d3f1b26fc8d538436b8fa3c4">ip_current_input_netif</a>();</div>
<div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>  <span class="keyword">struct </span>dhcp *dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>  <span class="keyword">struct </span><a class="code" href="structdhcp__msg.html">dhcp_msg</a> *reply_msg = (<span class="keyword">struct </span><a class="code" href="structdhcp__msg.html">dhcp_msg</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> msg_type;</div>
<div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>  </div>
<div class="line"><a name="l01686"></a><span class="lineno"> 1686</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(arg);</div>
<div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>  </div>
<div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>  <span class="comment">/* Caught DHCP message from netif that does not have DHCP enabled? -> not interested */</span></div>
<div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>  <span class="keywordflow">if</span> ((dhcp == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (dhcp->pcb_allocated == 0)) {</div>
<div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>  }</div>
<div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>  </div>
<div class="line"><a name="l01693"></a><span class="lineno"> 1693</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid server address type"</span>, <a class="code" href="ip__addr_8h.html#abee5dab2191bb0f3355d7f30d1496f24">IP_IS_V4</a>(addr));</div>
<div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>  </div>
<div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"dhcp_recv(pbuf = %p) from DHCP server %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">".%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">".%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">".%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, (<span class="keywordtype">void</span>*)p,</div>
<div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>  ip4_addr1_16(ip_2_ip4(addr)), ip4_addr2_16(ip_2_ip4(addr)), ip4_addr3_16(ip_2_ip4(addr)), ip4_addr4_16(ip_2_ip4(addr)), port));</div>
<div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf->len = %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, p->len));</div>
<div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf->tot_len = %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, p->tot_len));</div>
<div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>  <span class="comment">/* prevent warnings about unused arguments */</span></div>
<div class="line"><a name="l01700"></a><span class="lineno"> 1700</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(pcb);</div>
<div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(addr);</div>
<div class="line"><a name="l01702"></a><span class="lineno"> 1702</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(port);</div>
<div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>  </div>
<div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"reply wasn't freed"</span>, dhcp->msg_in == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>  </div>
<div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>  <span class="keywordflow">if</span> (p->len < DHCP_MIN_REPLY_LEN) {</div>
<div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>, (<span class="stringliteral">"DHCP reply message or pbuf too short\n"</span>));</div>
<div class="line"><a name="l01708"></a><span class="lineno"> 1708</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>  }</div>
<div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>  </div>
<div class="line"><a name="l01711"></a><span class="lineno"> 1711</span>  <span class="keywordflow">if</span> (reply_msg->op != <a class="code" href="prot_2dhcp_8h.html#a17ef000d25276ab6ca9d773af0d97d21">DHCP_BOOTREPLY</a>) {</div>
<div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>, (<span class="stringliteral">"not a DHCP reply message, but type %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)reply_msg->op));</div>
<div class="line"><a name="l01713"></a><span class="lineno"> 1713</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>  }</div>
<div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>  <span class="comment">/* iterate through hardware address and match against DHCP message */</span></div>
<div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#afe1181561cb16241f3cb5ed01e567d42">hwaddr_len</a> && i < <a class="code" href="netif_8h.html#ab887a8ec553de1be1d04cf2961c63c41">NETIF_MAX_HWADDR_LEN</a> && i < <a class="code" href="prot_2dhcp_8h.html#a15b8e74ffbf5eb908da440c307401c04">DHCP_CHADDR_LEN</a>; i++) {</div>
<div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#aee967965d999fc1a4c40a66709304e69">hwaddr</a>[i] != reply_msg->chaddr[i]) {</div>
<div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>,</div>
<div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>  (<span class="stringliteral">"netif->hwaddr[%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"]==%02"</span><a class="code" href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a><span class="stringliteral">" != reply_msg->chaddr[%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"]==%02"</span><a class="code" href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)i, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#aee967965d999fc1a4c40a66709304e69">hwaddr</a>[i], (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)i, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)reply_msg->chaddr[i]));</div>
<div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>  }</div>
<div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>  }</div>
<div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>  <span class="comment">/* match transaction ID against what we expected */</span></div>
<div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>  <span class="keywordflow">if</span> (<a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(reply_msg->xid) != dhcp->xid) {</div>
<div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>,</div>
<div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>  (<span class="stringliteral">"transaction id mismatch reply_msg->xid(%"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">")!=dhcp->xid(%"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">")\n"</span>,<a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(reply_msg->xid),dhcp->xid));</div>
<div class="line"><a name="l01728"></a><span class="lineno"> 1728</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>  }</div>
<div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>  <span class="comment">/* option fields could be unfold? */</span></div>
<div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>  <span class="keywordflow">if</span> (dhcp_parse_reply(dhcp, p) != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l01733"></a><span class="lineno"> 1733</span>  (<span class="stringliteral">"problem unfolding DHCP message - too short on memory?\n"</span>));</div>
<div class="line"><a name="l01734"></a><span class="lineno"> 1734</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>  }</div>
<div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>  </div>
<div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"searching DHCP_OPTION_MESSAGE_TYPE\n"</span>));</div>
<div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>  <span class="comment">/* obtain pointer to DHCP message type */</span></div>
<div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>  <span class="keywordflow">if</span> (!dhcp_option_given(dhcp, DHCP_OPTION_IDX_MSG_TYPE)) {</div>
<div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>, (<span class="stringliteral">"DHCP_OPTION_MESSAGE_TYPE option not found\n"</span>));</div>
<div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>  <span class="keywordflow">goto</span> free_pbuf_and_return;</div>
<div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>  }</div>
<div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>  </div>
<div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>  <span class="comment">/* read DHCP message type */</span></div>
<div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>  msg_type = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_MSG_TYPE);</div>
<div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>  <span class="comment">/* message type is DHCP ACK? */</span></div>
<div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>  <span class="keywordflow">if</span> (msg_type == <a class="code" href="prot_2dhcp_8h.html#a3cca70105d2c42c3381829f456446e0e">DHCP_ACK</a>) {</div>
<div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"DHCP_ACK received\n"</span>));</div>
<div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>  <span class="comment">/* in requesting state? */</span></div>
<div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>  <span class="keywordflow">if</span> (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a>) {</div>
<div class="line"><a name="l01751"></a><span class="lineno"> 1751</span>  dhcp_handle_ack(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01752"></a><span class="lineno"> 1752</span> <span class="preprocessor">#if DHCP_DOES_ARP_CHECK</span></div>
<div class="line"><a name="l01753"></a><span class="lineno"> 1753</span>  <span class="keywordflow">if</span> ((<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">flags</a> & <a class="code" href="group__netif__flags.html#ga92448dc510bc8d700c09e5c971ef0676">NETIF_FLAG_ETHARP</a>) != 0) {</div>
<div class="line"><a name="l01754"></a><span class="lineno"> 1754</span>  <span class="comment">/* check if the acknowledged lease address is already in use */</span></div>
<div class="line"><a name="l01755"></a><span class="lineno"> 1755</span>  dhcp_check(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01756"></a><span class="lineno"> 1756</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01757"></a><span class="lineno"> 1757</span>  <span class="comment">/* bind interface to the acknowledged lease address */</span></div>
<div class="line"><a name="l01758"></a><span class="lineno"> 1758</span>  dhcp_bind(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01759"></a><span class="lineno"> 1759</span>  }</div>
<div class="line"><a name="l01760"></a><span class="lineno"> 1760</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>  <span class="comment">/* bind interface to the acknowledged lease address */</span></div>
<div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>  dhcp_bind(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01763"></a><span class="lineno"> 1763</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01764"></a><span class="lineno"> 1764</span>  }</div>
<div class="line"><a name="l01765"></a><span class="lineno"> 1765</span>  <span class="comment">/* already bound to the given lease address? */</span></div>
<div class="line"><a name="l01766"></a><span class="lineno"> 1766</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>) ||</div>
<div class="line"><a name="l01767"></a><span class="lineno"> 1767</span>  (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>)) {</div>
<div class="line"><a name="l01768"></a><span class="lineno"> 1768</span>  dhcp_handle_ack(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01769"></a><span class="lineno"> 1769</span>  dhcp_bind(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01770"></a><span class="lineno"> 1770</span>  }</div>
<div class="line"><a name="l01771"></a><span class="lineno"> 1771</span>  }</div>
<div class="line"><a name="l01772"></a><span class="lineno"> 1772</span>  <span class="comment">/* received a DHCP_NAK in appropriate state? */</span></div>
<div class="line"><a name="l01773"></a><span class="lineno"> 1773</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((msg_type == <a class="code" href="prot_2dhcp_8h.html#a12682fd5edb10129309f2046504d4221">DHCP_NAK</a>) &&</div>
<div class="line"><a name="l01774"></a><span class="lineno"> 1774</span>  ((dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a>) ||</div>
<div class="line"><a name="l01775"></a><span class="lineno"> 1775</span>  (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a> ))) {</div>
<div class="line"><a name="l01776"></a><span class="lineno"> 1776</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"DHCP_NAK received\n"</span>));</div>
<div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>  dhcp_handle_nak(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>  }</div>
<div class="line"><a name="l01779"></a><span class="lineno"> 1779</span>  <span class="comment">/* received a DHCP_OFFER in DHCP_STATE_SELECTING state? */</span></div>
<div class="line"><a name="l01780"></a><span class="lineno"> 1780</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((msg_type == <a class="code" href="prot_2dhcp_8h.html#a4649df4abbae20e28fe422d09decd450">DHCP_OFFER</a>) && (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba8a0dca73b4731e6e475dbedc75082bc5">DHCP_STATE_SELECTING</a>)) {</div>
<div class="line"><a name="l01781"></a><span class="lineno"> 1781</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"DHCP_OFFER received in DHCP_STATE_SELECTING state\n"</span>));</div>
<div class="line"><a name="l01782"></a><span class="lineno"> 1782</span>  dhcp->request_timeout = 0;</div>
<div class="line"><a name="l01783"></a><span class="lineno"> 1783</span>  <span class="comment">/* remember offered lease */</span></div>
<div class="line"><a name="l01784"></a><span class="lineno"> 1784</span>  dhcp_handle_offer(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01785"></a><span class="lineno"> 1785</span>  }</div>
<div class="line"><a name="l01786"></a><span class="lineno"> 1786</span>  </div>
<div class="line"><a name="l01787"></a><span class="lineno"> 1787</span> free_pbuf_and_return:</div>
<div class="line"><a name="l01788"></a><span class="lineno"> 1788</span>  <span class="keywordflow">if</span> (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01789"></a><span class="lineno"> 1789</span>  dhcp->msg_in = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01790"></a><span class="lineno"> 1790</span>  }</div>
<div class="line"><a name="l01791"></a><span class="lineno"> 1791</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01792"></a><span class="lineno"> 1792</span> }</div>
<div class="line"><a name="l01793"></a><span class="lineno"> 1793</span>  </div>
<div class="line"><a name="l01801"></a><span class="lineno"> 1801</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01802"></a><span class="lineno"> 1802</span> dhcp_create_msg(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> dhcp *dhcp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> message_type)</div>
<div class="line"><a name="l01803"></a><span class="lineno"> 1803</span> {</div>
<div class="line"><a name="l01804"></a><span class="lineno"> 1804</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> i;</div>
<div class="line"><a name="l01805"></a><span class="lineno"> 1805</span> <span class="preprocessor">#ifndef DHCP_GLOBAL_XID</span></div>
<div class="line"><a name="l01806"></a><span class="lineno"> 1806</span>  </div>
<div class="line"><a name="l01810"></a><span class="lineno"> 1810</span> <span class="preprocessor">#if DHCP_CREATE_RAND_XID && defined(LWIP_RAND)</span></div>
<div class="line"><a name="l01811"></a><span class="lineno"> 1811</span>  <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> xid;</div>
<div class="line"><a name="l01812"></a><span class="lineno"> 1812</span> <span class="preprocessor">#else </span><span class="comment">/* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01813"></a><span class="lineno"> 1813</span>  <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> xid = 0xABCD0000;</div>
<div class="line"><a name="l01814"></a><span class="lineno"> 1814</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01815"></a><span class="lineno"> 1815</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l01816"></a><span class="lineno"> 1816</span>  <span class="keywordflow">if</span> (!xid_initialised) {</div>
<div class="line"><a name="l01817"></a><span class="lineno"> 1817</span>  xid = DHCP_GLOBAL_XID;</div>
<div class="line"><a name="l01818"></a><span class="lineno"> 1818</span>  xid_initialised = !xid_initialised;</div>
<div class="line"><a name="l01819"></a><span class="lineno"> 1819</span>  }</div>
<div class="line"><a name="l01820"></a><span class="lineno"> 1820</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01821"></a><span class="lineno"> 1821</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_create_msg: netif != NULL"</span>, (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l01822"></a><span class="lineno"> 1822</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_create_msg: dhcp != NULL"</span>, (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l01823"></a><span class="lineno"> 1823</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_create_msg: dhcp->p_out == NULL"</span>, dhcp->p_out == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01824"></a><span class="lineno"> 1824</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_create_msg: dhcp->msg_out == NULL"</span>, dhcp->msg_out == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01825"></a><span class="lineno"> 1825</span>  dhcp->p_out = <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(<a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a>, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>), <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>);</div>
<div class="line"><a name="l01826"></a><span class="lineno"> 1826</span>  <span class="keywordflow">if</span> (dhcp->p_out == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01827"></a><span class="lineno"> 1827</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l01828"></a><span class="lineno"> 1828</span>  (<span class="stringliteral">"dhcp_create_msg(): could not allocate pbuf\n"</span>));</div>
<div class="line"><a name="l01829"></a><span class="lineno"> 1829</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l01830"></a><span class="lineno"> 1830</span>  }</div>
<div class="line"><a name="l01831"></a><span class="lineno"> 1831</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_create_msg: check that first pbuf can hold struct dhcp_msg"</span>,</div>
<div class="line"><a name="l01832"></a><span class="lineno"> 1832</span>  (dhcp->p_out->len >= <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structdhcp__msg.html">dhcp_msg</a>)));</div>
<div class="line"><a name="l01833"></a><span class="lineno"> 1833</span>  </div>
<div class="line"><a name="l01834"></a><span class="lineno"> 1834</span>  <span class="comment">/* DHCP_REQUEST should reuse 'xid' from DHCPOFFER */</span></div>
<div class="line"><a name="l01835"></a><span class="lineno"> 1835</span>  <span class="keywordflow">if</span> ((message_type != <a class="code" href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a>)) {</div>
<div class="line"><a name="l01836"></a><span class="lineno"> 1836</span>  <span class="comment">/* reuse transaction identifier in retransmissions */</span></div>
<div class="line"><a name="l01837"></a><span class="lineno"> 1837</span>  <span class="keywordflow">if</span> (dhcp->tries == 0) {</div>
<div class="line"><a name="l01838"></a><span class="lineno"> 1838</span> <span class="preprocessor">#if DHCP_CREATE_RAND_XID && defined(LWIP_RAND)</span></div>
<div class="line"><a name="l01839"></a><span class="lineno"> 1839</span>  xid = LWIP_RAND();</div>
<div class="line"><a name="l01840"></a><span class="lineno"> 1840</span> <span class="preprocessor">#else </span><span class="comment">/* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01841"></a><span class="lineno"> 1841</span>  xid++;</div>
<div class="line"><a name="l01842"></a><span class="lineno"> 1842</span> <span class="preprocessor">#endif </span><span class="comment">/* DHCP_CREATE_RAND_XID && defined(LWIP_RAND) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01843"></a><span class="lineno"> 1843</span>  }</div>
<div class="line"><a name="l01844"></a><span class="lineno"> 1844</span>  dhcp->xid = xid;</div>
<div class="line"><a name="l01845"></a><span class="lineno"> 1845</span>  }</div>
<div class="line"><a name="l01846"></a><span class="lineno"> 1846</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>,</div>
<div class="line"><a name="l01847"></a><span class="lineno"> 1847</span>  (<span class="stringliteral">"transaction id xid(%"</span><a class="code" href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a><span class="stringliteral">")\n"</span>, xid));</div>
<div class="line"><a name="l01848"></a><span class="lineno"> 1848</span>  </div>
<div class="line"><a name="l01849"></a><span class="lineno"> 1849</span>  dhcp->msg_out = (<span class="keyword">struct </span><a class="code" href="structdhcp__msg.html">dhcp_msg</a> *)dhcp->p_out->payload;</div>
<div class="line"><a name="l01850"></a><span class="lineno"> 1850</span>  </div>
<div class="line"><a name="l01851"></a><span class="lineno"> 1851</span>  dhcp->msg_out->op = <a class="code" href="prot_2dhcp_8h.html#a752b1eb7aba89801f20202b074f03b67">DHCP_BOOTREQUEST</a>;</div>
<div class="line"><a name="l01852"></a><span class="lineno"> 1852</span>  <span class="comment">/* @todo: make link layer independent */</span></div>
<div class="line"><a name="l01853"></a><span class="lineno"> 1853</span>  dhcp->msg_out->htype = <a class="code" href="prot_2dhcp_8h.html#aa9bbddbdf30ee61e9bc529d1981f943a">DHCP_HTYPE_ETH</a>;</div>
<div class="line"><a name="l01854"></a><span class="lineno"> 1854</span>  dhcp->msg_out->hlen = <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#afe1181561cb16241f3cb5ed01e567d42">hwaddr_len</a>;</div>
<div class="line"><a name="l01855"></a><span class="lineno"> 1855</span>  dhcp->msg_out->hops = 0;</div>
<div class="line"><a name="l01856"></a><span class="lineno"> 1856</span>  dhcp->msg_out->xid = <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(dhcp->xid);</div>
<div class="line"><a name="l01857"></a><span class="lineno"> 1857</span>  dhcp->msg_out->secs = 0;</div>
<div class="line"><a name="l01858"></a><span class="lineno"> 1858</span>  <span class="comment">/* we don't need the broadcast flag since we can receive unicast traffic</span></div>
<div class="line"><a name="l01859"></a><span class="lineno"> 1859</span> <span class="comment"> before being fully configured! */</span></div>
<div class="line"><a name="l01860"></a><span class="lineno"> 1860</span>  dhcp->msg_out->flags = 0;</div>
<div class="line"><a name="l01861"></a><span class="lineno"> 1861</span>  ip4_addr_set_zero(&dhcp->msg_out->ciaddr);</div>
<div class="line"><a name="l01862"></a><span class="lineno"> 1862</span>  <span class="comment">/* set ciaddr to netif->ip_addr based on message_type and state */</span></div>
<div class="line"><a name="l01863"></a><span class="lineno"> 1863</span>  <span class="keywordflow">if</span> ((message_type == <a class="code" href="prot_2dhcp_8h.html#aaea6a969c0da81c2611885514bbe433f">DHCP_INFORM</a>) || (message_type == <a class="code" href="prot_2dhcp_8h.html#ae7469660afdf7997c020f7fbf5164548">DHCP_DECLINE</a>) || (message_type == <a class="code" href="prot_2dhcp_8h.html#ae629d2dc5df40f03ea87cc94a5e3f3eb">DHCP_RELEASE</a>) ||</div>
<div class="line"><a name="l01864"></a><span class="lineno"> 1864</span>  ((message_type == <a class="code" href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a>) && <span class="comment">/* DHCP_STATE_BOUND not used for sending! */</span></div>
<div class="line"><a name="l01865"></a><span class="lineno"> 1865</span>  ((dhcp->state== <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>) || dhcp->state== <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>))) {</div>
<div class="line"><a name="l01866"></a><span class="lineno"> 1866</span>  ip4_addr_copy(dhcp->msg_out->ciaddr, *netif_ip4_addr(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l01867"></a><span class="lineno"> 1867</span>  }</div>
<div class="line"><a name="l01868"></a><span class="lineno"> 1868</span>  ip4_addr_set_zero(&dhcp->msg_out->yiaddr);</div>
<div class="line"><a name="l01869"></a><span class="lineno"> 1869</span>  ip4_addr_set_zero(&dhcp->msg_out->siaddr);</div>
<div class="line"><a name="l01870"></a><span class="lineno"> 1870</span>  ip4_addr_set_zero(&dhcp->msg_out->giaddr);</div>
<div class="line"><a name="l01871"></a><span class="lineno"> 1871</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="prot_2dhcp_8h.html#a15b8e74ffbf5eb908da440c307401c04">DHCP_CHADDR_LEN</a>; i++) {</div>
<div class="line"><a name="l01872"></a><span class="lineno"> 1872</span>  <span class="comment">/* copy netif hardware address, pad with zeroes */</span></div>
<div class="line"><a name="l01873"></a><span class="lineno"> 1873</span>  dhcp->msg_out->chaddr[i] = (i < <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#afe1181561cb16241f3cb5ed01e567d42">hwaddr_len</a> && i < <a class="code" href="netif_8h.html#ab887a8ec553de1be1d04cf2961c63c41">NETIF_MAX_HWADDR_LEN</a>) ? <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#aee967965d999fc1a4c40a66709304e69">hwaddr</a>[i] : 0<span class="comment">/* pad byte*/</span>;</div>
<div class="line"><a name="l01874"></a><span class="lineno"> 1874</span>  }</div>
<div class="line"><a name="l01875"></a><span class="lineno"> 1875</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="prot_2dhcp_8h.html#a4227e9baee8b09567d1d9dda9d8a8cf3">DHCP_SNAME_LEN</a>; i++) {</div>
<div class="line"><a name="l01876"></a><span class="lineno"> 1876</span>  dhcp->msg_out->sname[i] = 0;</div>
<div class="line"><a name="l01877"></a><span class="lineno"> 1877</span>  }</div>
<div class="line"><a name="l01878"></a><span class="lineno"> 1878</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="prot_2dhcp_8h.html#a4ffd004c5d53666e9315d9571af6d41b">DHCP_FILE_LEN</a>; i++) {</div>
<div class="line"><a name="l01879"></a><span class="lineno"> 1879</span>  dhcp->msg_out->file[i] = 0;</div>
<div class="line"><a name="l01880"></a><span class="lineno"> 1880</span>  }</div>
<div class="line"><a name="l01881"></a><span class="lineno"> 1881</span>  dhcp->msg_out->cookie = <a class="code" href="def_8h.html#afea9c21aa1f56180cdf6fb42ef14a294">PP_HTONL</a>(<a class="code" href="prot_2dhcp_8h.html#ac38bb410b5a906ccc81317bf2197d0d5">DHCP_MAGIC_COOKIE</a>);</div>
<div class="line"><a name="l01882"></a><span class="lineno"> 1882</span>  dhcp->options_out_len = 0;</div>
<div class="line"><a name="l01883"></a><span class="lineno"> 1883</span>  <span class="comment">/* fill options field with an incrementing array (for debugging purposes) */</span></div>
<div class="line"><a name="l01884"></a><span class="lineno"> 1884</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>; i++) {</div>
<div class="line"><a name="l01885"></a><span class="lineno"> 1885</span>  dhcp->msg_out->options[i] = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)i; <span class="comment">/* for debugging only, no matter if truncated */</span></div>
<div class="line"><a name="l01886"></a><span class="lineno"> 1886</span>  }</div>
<div class="line"><a name="l01887"></a><span class="lineno"> 1887</span>  <span class="comment">/* Add option MESSAGE_TYPE */</span></div>
<div class="line"><a name="l01888"></a><span class="lineno"> 1888</span>  dhcp_option(dhcp, <a class="code" href="prot_2dhcp_8h.html#ab023a7a8b3307a68a2eff10a217e48a8">DHCP_OPTION_MESSAGE_TYPE</a>, <a class="code" href="prot_2dhcp_8h.html#a9cf37917cca6ff44e6e409e1fc30ce6b">DHCP_OPTION_MESSAGE_TYPE_LEN</a>);</div>
<div class="line"><a name="l01889"></a><span class="lineno"> 1889</span>  dhcp_option_byte(dhcp, message_type);</div>
<div class="line"><a name="l01890"></a><span class="lineno"> 1890</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01891"></a><span class="lineno"> 1891</span> }</div>
<div class="line"><a name="l01892"></a><span class="lineno"> 1892</span>  </div>
<div class="line"><a name="l01898"></a><span class="lineno"> 1898</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01899"></a><span class="lineno"> 1899</span> dhcp_delete_msg(<span class="keyword">struct</span> dhcp *dhcp)</div>
<div class="line"><a name="l01900"></a><span class="lineno"> 1900</span> {</div>
<div class="line"><a name="l01901"></a><span class="lineno"> 1901</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_delete_msg: dhcp != NULL"</span>, (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l01902"></a><span class="lineno"> 1902</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_delete_msg: dhcp->p_out != NULL"</span>, dhcp->p_out != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01903"></a><span class="lineno"> 1903</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_delete_msg: dhcp->msg_out != NULL"</span>, dhcp->msg_out != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01904"></a><span class="lineno"> 1904</span>  <span class="keywordflow">if</span> (dhcp->p_out != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01905"></a><span class="lineno"> 1905</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(dhcp->p_out);</div>
<div class="line"><a name="l01906"></a><span class="lineno"> 1906</span>  }</div>
<div class="line"><a name="l01907"></a><span class="lineno"> 1907</span>  dhcp->p_out = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01908"></a><span class="lineno"> 1908</span>  dhcp->msg_out = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01909"></a><span class="lineno"> 1909</span> }</div>
<div class="line"><a name="l01910"></a><span class="lineno"> 1910</span>  </div>
<div class="line"><a name="l01919"></a><span class="lineno"> 1919</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01920"></a><span class="lineno"> 1920</span> dhcp_option_trailer(<span class="keyword">struct</span> dhcp *dhcp)</div>
<div class="line"><a name="l01921"></a><span class="lineno"> 1921</span> {</div>
<div class="line"><a name="l01922"></a><span class="lineno"> 1922</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"dhcp_option_trailer: dhcp != NULL"</span>, (dhcp != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span>;);</div>
<div class="line"><a name="l01923"></a><span class="lineno"> 1923</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_option_trailer: dhcp->msg_out != NULL\n"</span>, dhcp->msg_out != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01924"></a><span class="lineno"> 1924</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dhcp_option_trailer: dhcp->options_out_len < DHCP_OPTIONS_LEN\n"</span>, dhcp->options_out_len < <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>);</div>
<div class="line"><a name="l01925"></a><span class="lineno"> 1925</span>  dhcp->msg_out->options[dhcp->options_out_len++] = <a class="code" href="prot_2dhcp_8h.html#aea2eb67064efec2c65fff4497f659e7d">DHCP_OPTION_END</a>;</div>
<div class="line"><a name="l01926"></a><span class="lineno"> 1926</span>  <span class="comment">/* packet is too small, or not 4 byte aligned? */</span></div>
<div class="line"><a name="l01927"></a><span class="lineno"> 1927</span>  <span class="keywordflow">while</span> (((dhcp->options_out_len < <a class="code" href="prot_2dhcp_8h.html#a639e682d86ae2abca54841cf2d5c7b57">DHCP_MIN_OPTIONS_LEN</a>) || (dhcp->options_out_len & 3)) &&</div>
<div class="line"><a name="l01928"></a><span class="lineno"> 1928</span>  (dhcp->options_out_len < <a class="code" href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a>)) {</div>
<div class="line"><a name="l01929"></a><span class="lineno"> 1929</span>  <span class="comment">/* add a fill/padding byte */</span></div>
<div class="line"><a name="l01930"></a><span class="lineno"> 1930</span>  dhcp->msg_out->options[dhcp->options_out_len++] = 0;</div>
<div class="line"><a name="l01931"></a><span class="lineno"> 1931</span>  }</div>
<div class="line"><a name="l01932"></a><span class="lineno"> 1932</span> }</div>
<div class="line"><a name="l01933"></a><span class="lineno"> 1933</span>  </div>
<div class="line"><a name="l01940"></a><span class="lineno"> 1940</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l01941"></a><span class="lineno"> 1941</span> dhcp_supplied_address(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l01942"></a><span class="lineno"> 1942</span> {</div>
<div class="line"><a name="l01943"></a><span class="lineno"> 1943</span>  <span class="keywordflow">if</span> ((<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>) != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l01944"></a><span class="lineno"> 1944</span>  <span class="keyword">struct </span>dhcp* dhcp = netif_dhcp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l01945"></a><span class="lineno"> 1945</span>  <span class="keywordflow">return</span> (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8">DHCP_STATE_BOUND</a>) || (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a>) ||</div>
<div class="line"><a name="l01946"></a><span class="lineno"> 1946</span>  (dhcp->state == <a class="code" href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a>);</div>
<div class="line"><a name="l01947"></a><span class="lineno"> 1947</span>  }</div>
<div class="line"><a name="l01948"></a><span class="lineno"> 1948</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l01949"></a><span class="lineno"> 1949</span> }</div>
<div class="line"><a name="l01950"></a><span class="lineno"> 1950</span>  </div>
<div class="line"><a name="l01951"></a><span class="lineno"> 1951</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_DHCP */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="alwipopts_8h_html_a9f9881c887a8aceb9765820c2dbdf292"><div class="ttname"><a href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a></div><div class="ttdeci">#define DNS_MAX_SERVERS</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00160">lwipopts.h:160</a></div></div>
<div class="ttc" id="aip_8h_html_ac8c7ccdad2d7d3a264bd8cfc57140ca8"><div class="ttname"><a href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">SOF_BROADCAST</a></div><div class="ttdeci">#define SOF_BROADCAST</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00099">ip.h:99</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_acff5b8c45e6d63afd973aa8a0e72a901"><div class="ttname"><a href="prot_2dhcp_8h.html#acff5b8c45e6d63afd973aa8a0e72a901">DHCP_OPTION_SUBNET_MASK</a></div><div class="ttdeci">#define DHCP_OPTION_SUBNET_MASK</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00140">dhcp.h:140</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_af5e2f617c0b6005fb50db9851797be1b"><div class="ttname"><a href="prot_2dhcp_8h.html#af5e2f617c0b6005fb50db9851797be1b">DHCP_OPTIONS_OFS</a></div><div class="ttdeci">#define DHCP_OPTIONS_OFS</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00058">dhcp.h:58</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbacd567c9a791f5112e7b5a46be86548cd">DHCP_STATE_RENEWING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00107">dhcp.h:107</a></div></div>
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<div class="ttc" id="astructpbuf_html_a6f82449625e36e294f5d210268c0703f"><div class="ttname"><a href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">pbuf::len</a></div><div class="ttdeci">u16_t len</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00159">pbuf.h:159</a></div></div>
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<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba59b94c72eaa1d506d9014de5c9ff5608">DHCP_STATE_REBOOTING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00105">dhcp.h:105</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf55c3505a4745661f94134f8ccaa6c27">DHCP_STATE_REBINDING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00106">dhcp.h:106</a></div></div>
<div class="ttc" id="aip__addr_8h_html_abee5dab2191bb0f3355d7f30d1496f24"><div class="ttname"><a href="ip__addr_8h.html#abee5dab2191bb0f3355d7f30d1496f24">IP_IS_V4</a></div><div class="ttdeci">#define IP_IS_V4(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00295">ip_addr.h:295</a></div></div>
<div class="ttc" id="anetif_8h_html_ab887a8ec553de1be1d04cf2961c63c41"><div class="ttname"><a href="netif_8h.html#ab887a8ec553de1be1d04cf2961c63c41">NETIF_MAX_HWADDR_LEN</a></div><div class="ttdeci">#define NETIF_MAX_HWADDR_LEN</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00071">netif.h:71</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaba0a132e9bb9e5468d04013266e8c997">DHCP_STATE_REQUESTING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00103">dhcp.h:103</a></div></div>
<div class="ttc" id="adebug_8h_html_a94ad086267808462beae2b38f91996ed"><div class="ttname"><a href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a></div><div class="ttdeci">#define LWIP_ASSERT(message, assertion)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00116">debug.h:116</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a478f5be6fb4bfb09b235bb50cf806cc9"><div class="ttname"><a href="prot_2dhcp_8h.html#a478f5be6fb4bfb09b235bb50cf806cc9">DHCP_SERVER_PORT</a></div><div class="ttdeci">#define DHCP_SERVER_PORT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00048">dhcp.h:48</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a17ef000d25276ab6ca9d773af0d97d21"><div class="ttname"><a href="prot_2dhcp_8h.html#a17ef000d25276ab6ca9d773af0d97d21">DHCP_BOOTREPLY</a></div><div class="ttdeci">#define DHCP_BOOTREPLY</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00119">dhcp.h:119</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a8336c0e435dd07302c1b433d2c9197be"><div class="ttname"><a href="prot_2dhcp_8h.html#a8336c0e435dd07302c1b433d2c9197be">DHCP_OPTION_HOSTNAME</a></div><div class="ttdeci">#define DHCP_OPTION_HOSTNAME</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00143">dhcp.h:143</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a97927ceecabcdb5f41735bf372a05cee"><div class="ttname"><a href="lwipopts_8h.html#a97927ceecabcdb5f41735bf372a05cee">DHCP_DEBUG</a></div><div class="ttdeci">#define DHCP_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00484">lwipopts.h:484</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_afa25c2c462288d2ab8cec19d22af661f"><div class="ttname"><a href="prot_2dhcp_8h.html#afa25c2c462288d2ab8cec19d22af661f">DHCP_OPTION_OVERLOAD</a></div><div class="ttdeci">#define DHCP_OPTION_OVERLOAD</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00154">dhcp.h:154</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00067">err.h:67</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga77570ac4fcab86864fa1916e55676da2"><div class="ttname"><a href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div><div class="ttdeci">uint16_t u16_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00124">arch.h:124</a></div></div>
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<div class="ttc" id="astructdhcp__msg_html"><div class="ttname"><a href="structdhcp__msg.html">dhcp_msg</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00065">dhcp.h:65</a></div></div>
<div class="ttc" id="adef_8h_html_a4abb61f4c9339d8a0a0c63b4fbfe6a37"><div class="ttname"><a href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a></div><div class="ttdeci">#define LWIP_ARRAYSIZE(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00058">def.h:58</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a3cca70105d2c42c3381829f456446e0e"><div class="ttname"><a href="prot_2dhcp_8h.html#a3cca70105d2c42c3381829f456446e0e">DHCP_ACK</a></div><div class="ttdeci">#define DHCP_ACK</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00126">dhcp.h:126</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba041a5104e13c4ccfe4982ca3aac677b1"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba041a5104e13c4ccfe4982ca3aac677b1">DHCP_STATE_OFF</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00102">dhcp.h:102</a></div></div>
<div class="ttc" id="aautoip_8h_html"><div class="ttname"><a href="autoip_8h.html">autoip.h</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a15b8e74ffbf5eb908da440c307401c04"><div class="ttname"><a href="prot_2dhcp_8h.html#a15b8e74ffbf5eb908da440c307401c04">DHCP_CHADDR_LEN</a></div><div class="ttdeci">#define DHCP_CHADDR_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00052">dhcp.h:52</a></div></div>
<div class="ttc" id="astructpbuf_html_a5259e7ec29bab9c0999b64f2e86b411f"><div class="ttname"><a href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">pbuf::tot_len</a></div><div class="ttdeci">u16_t tot_len</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00156">pbuf.h:156</a></div></div>
<div class="ttc" id="agroup__netif__flags_html_ga92448dc510bc8d700c09e5c971ef0676"><div class="ttname"><a href="group__netif__flags.html#ga92448dc510bc8d700c09e5c971ef0676">NETIF_FLAG_ETHARP</a></div><div class="ttdeci">#define NETIF_FLAG_ETHARP</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00099">netif.h:99</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba1200a3d268f2eadee62987a8d7d122e8">DHCP_STATE_BOUND</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00112">dhcp.h:112</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga4c14294869aceba3ef9d4c0c302d0f33"><div class="ttname"><a href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a></div><div class="ttdeci">uint32_t u32_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00126">arch.h:126</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ab9a44c5141f2c790f94ec2dd8a1a4f7e"><div class="ttname"><a href="prot_2dhcp_8h.html#ab9a44c5141f2c790f94ec2dd8a1a4f7e">DHCP_OPTION_T2</a></div><div class="ttdeci">#define DHCP_OPTION_T2</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00166">dhcp.h:166</a></div></div>
<div class="ttc" id="astructpbuf_html_a5e5763c94fd18d78937b0b58ce7df341"><div class="ttname"><a href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">pbuf::next</a></div><div class="ttdeci">struct pbuf * next</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00144">pbuf.h:144</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00076">pbuf.h:76</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gab0dd696fb4b6bc65e548944584f1738b"><div class="ttname"><a href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a></div><div class="ttdeci">u8_t pbuf_free(struct pbuf *p)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00715">pbuf.c:715</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ae629d2dc5df40f03ea87cc94a5e3f3eb"><div class="ttname"><a href="prot_2dhcp_8h.html#ae629d2dc5df40f03ea87cc94a5e3f3eb">DHCP_RELEASE</a></div><div class="ttdeci">#define DHCP_RELEASE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00128">dhcp.h:128</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a4ff3f941b4c71a04b0c30fbee5b198c2"><div class="ttname"><a href="lwipopts_8h.html#a4ff3f941b4c71a04b0c30fbee5b198c2">LWIP_DHCP_AUTOIP_COOP_TRIES</a></div><div class="ttdeci">#define LWIP_DHCP_AUTOIP_COOP_TRIES</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00153">lwipopts.h:153</a></div></div>
<div class="ttc" id="alib_8h_html_ae6c8de953239811a34eeeab09458e55e"><div class="ttname"><a href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a></div><div class="ttdeci">int strlen(const char *str)</div><div class="ttdef"><b>Definition:</b> <a href="strlen_8c_source.html#l00055">strlen.c:55</a></div></div>
<div class="ttc" id="astructnetif_html_aca7d56b4e0f822b0ced2885f222b8d48"><div class="ttname"><a href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">netif::mtu</a></div><div class="ttdeci">u16_t mtu</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00307">netif.h:307</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga988147559b78642ac881815b66023646"><div class="ttname"><a href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a></div><div class="ttdeci">#define LWIP_DBG_TRACE</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00083">debug.h:83</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a04a7b3f1d9138c82c51f2752d440c13e"><div class="ttname"><a href="prot_2dhcp_8h.html#a04a7b3f1d9138c82c51f2752d440c13e">DHCP_OVERLOAD_FILE</a></div><div class="ttdeci">#define DHCP_OVERLOAD_FILE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00174">dhcp.h:174</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a4ffd004c5d53666e9315d9571af6d41b"><div class="ttname"><a href="prot_2dhcp_8h.html#a4ffd004c5d53666e9315d9571af6d41b">DHCP_FILE_LEN</a></div><div class="ttdeci">#define DHCP_FILE_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00056">dhcp.h:56</a></div></div>
<div class="ttc" id="astructnetif_html_a1c171db6097bbb6f09f63549a66e00ea"><div class="ttname"><a href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">netif::flags</a></div><div class="ttdeci">u8_t flags</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00313">netif.h:313</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a72cfc4e231017d1d116bb1d69d18ae8c"><div class="ttname"><a href="prot_2dhcp_8h.html#a72cfc4e231017d1d116bb1d69d18ae8c">DHCP_OPTION_ROUTER</a></div><div class="ttdeci">#define DHCP_OPTION_ROUTER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00141">dhcp.h:141</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a8b484e555c18f2d20df9a2267f35bced"><div class="ttname"><a href="prot_2dhcp_8h.html#a8b484e555c18f2d20df9a2267f35bced">DHCP_OPTION_PARAMETER_REQUEST_LIST</a></div><div class="ttdeci">#define DHCP_OPTION_PARAMETER_REQUEST_LIST</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00160">dhcp.h:160</a></div></div>
<div class="ttc" id="amem_8h_html_a2fd7aa1adf6e394d3be7c7734e7df41a"><div class="ttname"><a href="mem_8h.html#a2fd7aa1adf6e394d3be7c7734e7df41a">mem_free</a></div><div class="ttdeci">void mem_free(void *mem)</div><div class="ttdef"><b>Definition:</b> <a href="mem_8c_source.html#l00419">mem.c:419</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ae7469660afdf7997c020f7fbf5164548"><div class="ttname"><a href="prot_2dhcp_8h.html#ae7469660afdf7997c020f7fbf5164548">DHCP_DECLINE</a></div><div class="ttdeci">#define DHCP_DECLINE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00125">dhcp.h:125</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ae99d4be0d03f6f9c8f02f63abde91a06"><div class="ttname"><a href="prot_2dhcp_8h.html#ae99d4be0d03f6f9c8f02f63abde91a06">DHCP_OPTIONS_LEN</a></div><div class="ttdeci">#define DHCP_OPTIONS_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00090">dhcp.h:90</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a73960c1209385e0b3f8d9c0e4f6f438f"><div class="ttname"><a href="prot_2dhcp_8h.html#a73960c1209385e0b3f8d9c0e4f6f438f">DHCP_OPTION_MAX_MSG_SIZE_LEN</a></div><div class="ttdeci">#define DHCP_OPTION_MAX_MSG_SIZE_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00163">dhcp.h:163</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga1418f92673e54a36b6e376109e526382"><div class="ttname"><a href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a></div><div class="ttdeci">#define X16_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00154">arch.h:154</a></div></div>
<div class="ttc" id="adef_8h_html_a748f5df614a3fc989e8900fd229d6e4e"><div class="ttname"><a href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a></div><div class="ttdeci">#define LWIP_MIN(x, y)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00055">def.h:55</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ac32aa14a7fed99bcff08d10ca2dafc4d"><div class="ttname"><a href="prot_2dhcp_8h.html#ac32aa14a7fed99bcff08d10ca2dafc4d">DHCP_OPTION_T1</a></div><div class="ttdeci">#define DHCP_OPTION_T1</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00165">dhcp.h:165</a></div></div>
<div class="ttc" id="astats_8h_html"><div class="ttname"><a href="stats_8h.html">stats.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00065">err.h:65</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gac2f1f58fd36042e82af46f5015720899"><div class="ttname"><a href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a></div><div class="ttdeci">u16_t pbuf_copy_partial(const struct pbuf *p, void *dataptr, u16_t len, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01016">pbuf.c:1016</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga0269bdc51f1e8a5ecf9af72c6e1c996c"><div class="ttname"><a href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a></div><div class="ttdeci">#define LWIP_DBG_LEVEL_SERIOUS</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00057">debug.h:57</a></div></div>
<div class="ttc" id="astructnetif_html_aee967965d999fc1a4c40a66709304e69"><div class="ttname"><a href="structnetif.html#aee967965d999fc1a4c40a66709304e69">netif::hwaddr</a></div><div class="ttdeci">u8_t hwaddr[6U]</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00311">netif.h:311</a></div></div>
<div class="ttc" id="anetif_8h_html"><div class="ttname"><a href="netif_8h.html">netif.h</a></div></div>
<div class="ttc" id="adebug_8h_html_a827bc03cd7889e7c007df39d33b33d18"><div class="ttname"><a href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a></div><div class="ttdeci">#define LWIP_ERROR(message, expression, handler)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00135">debug.h:135</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a3bdf84c273501fb73ad217dcab87bb4a"><div class="ttname"><a href="prot_2dhcp_8h.html#a3bdf84c273501fb73ad217dcab87bb4a">DHCP_OPTION_SERVER_ID</a></div><div class="ttdeci">#define DHCP_OPTION_SERVER_ID</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00159">dhcp.h:159</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a9d014e3f7dc9e1e7c7decd8652ba65e2"><div class="ttname"><a href="lwipopts_8h.html#a9d014e3f7dc9e1e7c7decd8652ba65e2">LWIP_DHCP_MAX_NTP_SERVERS</a></div><div class="ttdeci">#define LWIP_DHCP_MAX_NTP_SERVERS</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00149">lwipopts.h:149</a></div></div>
<div class="ttc" id="astructnetif_html_ab7ef01e505dd2feb781fe86756b1c973"><div class="ttname"><a href="structnetif.html#ab7ef01e505dd2feb781fe86756b1c973">netif::num</a></div><div class="ttdeci">u8_t num</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00317">netif.h:317</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_aaea6a969c0da81c2611885514bbe433f"><div class="ttname"><a href="prot_2dhcp_8h.html#aaea6a969c0da81c2611885514bbe433f">DHCP_INFORM</a></div><div class="ttdeci">#define DHCP_INFORM</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00129">dhcp.h:129</a></div></div>
<div class="ttc" id="anetif_8h_html_a780be4c3fa9f7f2534f7865666c3a1b8"><div class="ttname"><a href="netif_8h.html#a780be4c3fa9f7f2534f7865666c3a1b8">netif_is_link_up</a></div><div class="ttdeci">#define netif_is_link_up(netif)</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00421">netif.h:421</a></div></div>
<div class="ttc" id="adef_8h_html_a56098407d66feb75806f655bafbee81d"><div class="ttname"><a href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a></div><div class="ttdeci">#define lwip_ntohl(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00078">def.h:78</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba2dcc3cf888f75285cdc86c3574e1af44"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba2dcc3cf888f75285cdc86c3574e1af44">DHCP_STATE_BACKING_OFF</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00114">dhcp.h:114</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gacfcb0a2af918658ba0afe36499c65f47"><div class="ttname"><a href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a></div><div class="ttdeci">struct pbuf * pbuf_alloc(pbuf_layer l, u16_t length, pbuf_type type)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00248">pbuf.c:248</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ae5a724660dd11c27d8ed477f0ee136e3"><div class="ttname"><a href="prot_2dhcp_8h.html#ae5a724660dd11c27d8ed477f0ee136e3">DHCP_OPTION_NTP</a></div><div class="ttdeci">#define DHCP_OPTION_NTP</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00148">dhcp.h:148</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga4caecabca98b43919dd11be1c0d4cd8e"><div class="ttname"><a href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div><div class="ttdeci">uint8_t u8_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00122">arch.h:122</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_aea2eb67064efec2c65fff4497f659e7d"><div class="ttname"><a href="prot_2dhcp_8h.html#aea2eb67064efec2c65fff4497f659e7d">DHCP_OPTION_END</a></div><div class="ttdeci">#define DHCP_OPTION_END</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00149">dhcp.h:149</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a88b43639738c4de2d3cd22e3a1fd7696"><div class="ttname"><a href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a></div><div class="ttdeci">ip6_addr_t ip_addr_t</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00290">ip_addr.h:290</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a368aca81d0a71853aa3939f546cc25ae"><div class="ttname"><a href="prot_2dhcp_8h.html#a368aca81d0a71853aa3939f546cc25ae">DHCP_DISCOVER</a></div><div class="ttdeci">#define DHCP_DISCOVER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00122">dhcp.h:122</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a4227e9baee8b09567d1d9dda9d8a8cf3"><div class="ttname"><a href="prot_2dhcp_8h.html#a4227e9baee8b09567d1d9dda9d8a8cf3">DHCP_SNAME_LEN</a></div><div class="ttdeci">#define DHCP_SNAME_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00054">dhcp.h:54</a></div></div>
<div class="ttc" id="astructnetif_html"><div class="ttname"><a href="structnetif.html">netif</a></div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00233">netif.h:233</a></div></div>
<div class="ttc" id="astructnetif_html_afe1181561cb16241f3cb5ed01e567d42"><div class="ttname"><a href="structnetif.html#afe1181561cb16241f3cb5ed01e567d42">netif::hwaddr_len</a></div><div class="ttdeci">u8_t hwaddr_len</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00309">netif.h:309</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga50abfe830a33a1a47a562febee66015d"><div class="ttname"><a href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a></div><div class="ttdeci">void pbuf_realloc(struct pbuf *p, u16_t size)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00493">pbuf.c:493</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a4649df4abbae20e28fe422d09decd450"><div class="ttname"><a href="prot_2dhcp_8h.html#a4649df4abbae20e28fe422d09decd450">DHCP_OFFER</a></div><div class="ttdeci">#define DHCP_OFFER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00123">dhcp.h:123</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00096">err.h:96</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga70624a5deb8b9199406372a7f3603ecf"><div class="ttname"><a href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a></div><div class="ttdeci">#define LWIP_UNUSED_ARG(x)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00315">arch.h:315</a></div></div>
<div class="ttc" id="adef_8c_html_a14f94347a5b9b9e3602705b75b7ae524"><div class="ttname"><a href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a></div><div class="ttdeci">u32_t lwip_htonl(u32_t n)</div><div class="ttdef"><b>Definition:</b> <a href="def_8c_source.html#l00088">def.c:88</a></div></div>
<div class="ttc" id="astructnetif_html_a32fca6ffd28bb9af3f891a378827a67e"><div class="ttname"><a href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">netif::name</a></div><div class="ttdeci">char name[2]</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00315">netif.h:315</a></div></div>
<div class="ttc" id="aip_8h_html_ae214afa9d3f1b26fc8d538436b8fa3c4"><div class="ttname"><a href="ip_8h.html#ae214afa9d3f1b26fc8d538436b8fa3c4">ip_current_input_netif</a></div><div class="ttdeci">#define ip_current_input_netif()</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00137">ip.h:137</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ac38bb410b5a906ccc81317bf2197d0d5"><div class="ttname"><a href="prot_2dhcp_8h.html#ac38bb410b5a906ccc81317bf2197d0d5">DHCP_MAGIC_COOKIE</a></div><div class="ttdeci">#define DHCP_MAGIC_COOKIE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00134">dhcp.h:134</a></div></div>
<div class="ttc" id="astructnetif_html_ae77736b64df442242795220d76be6b86"><div class="ttname"><a href="structnetif.html#ae77736b64df442242795220d76be6b86">netif::next</a></div><div class="ttdeci">struct netif * next</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00235">netif.h:235</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00108">pbuf.h:108</a></div></div>
<div class="ttc" id="anetif_8h_html_a1c8141eaa98f6dc6dfddbb23a706656c"><div class="ttname"><a href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a></div><div class="ttdeci">struct netif * netif_list</div><div class="ttdef"><b>Definition:</b> <a href="netif_8c_source.html#l00104">netif.c:104</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gaa9d7f6eb2ee9fcc5eda3545dbb1886e0"><div class="ttname"><a href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a></div><div class="ttdeci">#define U16_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00148">arch.h:148</a></div></div>
<div class="ttc" id="adhcp_8h_html"><div class="ttname"><a href="dhcp_8h.html">dhcp.h</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a23dd788b1cd28a0d834c3afefceaa1c1"><div class="ttname"><a href="prot_2dhcp_8h.html#a23dd788b1cd28a0d834c3afefceaa1c1">DHCP_CLIENT_PORT</a></div><div class="ttdeci">#define DHCP_CLIENT_PORT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00047">dhcp.h:47</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00063">err.h:63</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html"><div class="ttname"><a href="prot_2dhcp_8h.html">dhcp.h</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bbaf9a6f1bd1a701f3047c542bde1d42ce8"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bbaf9a6f1bd1a701f3047c542bde1d42ce8">DHCP_STATE_INFORMING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00109">dhcp.h:109</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_gaf02d9da80fd66b4f986d2c53d7231ddb"><div class="ttname"><a href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div><div class="ttdeci">s8_t err_t</div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00057">err.h:57</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba56d0710d1876bafdbf9a1c333d6d9ab9"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba56d0710d1876bafdbf9a1c333d6d9ab9">DHCP_STATE_CHECKING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00110">dhcp.h:110</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a77a933975db287f6aa5c2e70249ba18f"><div class="ttname"><a href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a></div><div class="ttdeci">#define ip_addr_copy(dest, src)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00305">ip_addr.h:305</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a370421b9ce80052774e0dd8a6437a025"><div class="ttname"><a href="prot_2dhcp_8h.html#a370421b9ce80052774e0dd8a6437a025">DHCP_SNAME_OFS</a></div><div class="ttdeci">#define DHCP_SNAME_OFS</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00053">dhcp.h:53</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a76d647c8774a4169ac92e01400bbb6ea"><div class="ttname"><a href="prot_2dhcp_8h.html#a76d647c8774a4169ac92e01400bbb6ea">DHCP_OVERLOAD_SNAME</a></div><div class="ttdeci">#define DHCP_OVERLOAD_SNAME</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00175">dhcp.h:175</a></div></div>
<div class="ttc" id="aip_8h_html_a13f48cf825c7f074dc05bea54e9d6a93"><div class="ttname"><a href="ip_8h.html#a13f48cf825c7f074dc05bea54e9d6a93">ip_set_option</a></div><div class="ttdeci">#define ip_set_option(pcb, opt)</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00217">ip.h:217</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a9cf37917cca6ff44e6e409e1fc30ce6b"><div class="ttname"><a href="prot_2dhcp_8h.html#a9cf37917cca6ff44e6e409e1fc30ce6b">DHCP_OPTION_MESSAGE_TYPE_LEN</a></div><div class="ttdeci">#define DHCP_OPTION_MESSAGE_TYPE_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00157">dhcp.h:157</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a98a346c53c91848070fd980a98fa77d1"><div class="ttname"><a href="prot_2dhcp_8h.html#a98a346c53c91848070fd980a98fa77d1">DHCP_REQUEST</a></div><div class="ttdeci">#define DHCP_REQUEST</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00124">dhcp.h:124</a></div></div>
<div class="ttc" id="amem_8h_html_a932aa40d85b14cb7331625e012d12335"><div class="ttname"><a href="mem_8h.html#a932aa40d85b14cb7331625e012d12335">mem_malloc</a></div><div class="ttdeci">void * mem_malloc(mem_size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="mem_8c_source.html#l00603">mem.c:603</a></div></div>
<div class="ttc" id="aetharp_8h_html"><div class="ttname"><a href="etharp_8h.html">etharp.h</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a8f05c5c6084fbac0be7b24101189232b"><div class="ttname"><a href="prot_2dhcp_8h.html#a8f05c5c6084fbac0be7b24101189232b">DHCP_OPTION_DNS_SERVER</a></div><div class="ttdeci">#define DHCP_OPTION_DNS_SERVER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00142">dhcp.h:142</a></div></div>
<div class="ttc" id="audp_8h_html"><div class="ttname"><a href="udp_8h.html">udp.h</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a752b1eb7aba89801f20202b074f03b67"><div class="ttname"><a href="prot_2dhcp_8h.html#a752b1eb7aba89801f20202b074f03b67">DHCP_BOOTREQUEST</a></div><div class="ttdeci">#define DHCP_BOOTREQUEST</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00118">dhcp.h:118</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a639e682d86ae2abca54841cf2d5c7b57"><div class="ttname"><a href="prot_2dhcp_8h.html#a639e682d86ae2abca54841cf2d5c7b57">DHCP_MIN_OPTIONS_LEN</a></div><div class="ttdeci">#define DHCP_MIN_OPTIONS_LEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00082">dhcp.h:82</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga77c491e468bf7d9a1bc48430c1866a96"><div class="ttname"><a href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a></div><div class="ttdeci">#define LWIP_DBG_LEVEL_WARNING</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00055">debug.h:55</a></div></div>
<div class="ttc" id="astring_8h_html_ace4b911463887af5e748326323e99a23"><div class="ttname"><a href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a></div><div class="ttdeci">void * memset(void *dst, int c, size_t length)</div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a458994de9415a8a622d1a560bfd9ace4"><div class="ttname"><a href="prot_2dhcp_8h.html#a458994de9415a8a622d1a560bfd9ace4">DHCP_OPTION_LEASE_TIME</a></div><div class="ttdeci">#define DHCP_OPTION_LEASE_TIME</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00153">dhcp.h:153</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_afcfde7a8c1ec0e3055d9a01ef2fa6aa9"><div class="ttname"><a href="prot_2dhcp_8h.html#afcfde7a8c1ec0e3055d9a01ef2fa6aa9">DHCP_OPTION_PAD</a></div><div class="ttdeci">#define DHCP_OPTION_PAD</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00139">dhcp.h:139</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba04ab7401642e6e7d7dff940bf1c6ebc0"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba04ab7401642e6e7d7dff940bf1c6ebc0">DHCP_STATE_INIT</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00104">dhcp.h:104</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a07ea61064695eda45483c4c0a192614c"><div class="ttname"><a href="prot_2dhcp_8h.html#a07ea61064695eda45483c4c0a192614c">DHCP_OVERLOAD_SNAME_FILE</a></div><div class="ttdeci">#define DHCP_OVERLOAD_SNAME_FILE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00176">dhcp.h:176</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gad8b0a364e95b07cb0c47709fdc6037d6"><div class="ttname"><a href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a></div><div class="ttdeci">#define U32_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00157">arch.h:157</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_aa9bbddbdf30ee61e9bc529d1981f943a"><div class="ttname"><a href="prot_2dhcp_8h.html#aa9bbddbdf30ee61e9bc529d1981f943a">DHCP_HTYPE_ETH</a></div><div class="ttdeci">#define DHCP_HTYPE_ETH</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00132">dhcp.h:132</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_aabc084bbce4768f1a2ec17caa0aac858"><div class="ttname"><a href="prot_2dhcp_8h.html#aabc084bbce4768f1a2ec17caa0aac858">DHCP_OPTION_MAX_MSG_SIZE</a></div><div class="ttdeci">#define DHCP_OPTION_MAX_MSG_SIZE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00162">dhcp.h:162</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gac219830a93d05c5f18f64ce87a34be14"><div class="ttname"><a href="group__compiler__abstraction.html#gac219830a93d05c5f18f64ce87a34be14">X32_F</a></div><div class="ttdeci">#define X32_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00163">arch.h:163</a></div></div>
<div class="ttc" id="amem_8h_html"><div class="ttname"><a href="mem_8h.html">mem.h</a></div></div>
<div class="ttc" id="adef_8h_html_afea9c21aa1f56180cdf6fb42ef14a294"><div class="ttname"><a href="def_8h.html#afea9c21aa1f56180cdf6fb42ef14a294">PP_HTONL</a></div><div class="ttdeci">#define PP_HTONL(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00081">def.h:81</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a3c2983cbd228011dd3e18cb417e7e423"><div class="ttname"><a href="lwipopts_8h.html#a3c2983cbd228011dd3e18cb417e7e423">LWIP_DHCP_BOOTP_FILE</a></div><div class="ttdeci">#define LWIP_DHCP_BOOTP_FILE</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00147">lwipopts.h:147</a></div></div>
<div class="ttc" id="adns_8h_html"><div class="ttname"><a href="dns_8h.html">dns.h</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ad85c86fcabb42bf16849247f12d810bba8a0dca73b4731e6e475dbedc75082bc5"><div class="ttname"><a href="prot_2dhcp_8h.html#ad85c86fcabb42bf16849247f12d810bba8a0dca73b4731e6e475dbedc75082bc5">DHCP_STATE_SELECTING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00108">dhcp.h:108</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a1cbad840414a6617ebdb17b1b9073597"><div class="ttname"><a href="prot_2dhcp_8h.html#a1cbad840414a6617ebdb17b1b9073597">DHCP_OPTION_REQUESTED_IP</a></div><div class="ttdeci">#define DHCP_OPTION_REQUESTED_IP</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00152">dhcp.h:152</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a12682fd5edb10129309f2046504d4221"><div class="ttname"><a href="prot_2dhcp_8h.html#a12682fd5edb10129309f2046504d4221">DHCP_NAK</a></div><div class="ttdeci">#define DHCP_NAK</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00127">dhcp.h:127</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00075">err.h:75</a></div></div>
<div class="ttc" id="astructpbuf_html"><div class="ttname"><a href="structpbuf.html">pbuf</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00142">pbuf.h:142</a></div></div>
<div class="ttc" id="adebug_8h_html_a63a04edf7ff63c951bd8706711956cdb"><div class="ttname"><a href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a></div><div class="ttdeci">#define LWIP_DEBUGF(debug, message)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00164">debug.h:164</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_a87e51df90840a08fe0a3602d126ebfe3"><div class="ttname"><a href="prot_2dhcp_8h.html#a87e51df90840a08fe0a3602d126ebfe3">DHCP_FILE_OFS</a></div><div class="ttdeci">#define DHCP_FILE_OFS</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00055">dhcp.h:55</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ab023a7a8b3307a68a2eff10a217e48a8"><div class="ttname"><a href="prot_2dhcp_8h.html#ab023a7a8b3307a68a2eff10a217e48a8">DHCP_OPTION_MESSAGE_TYPE</a></div><div class="ttdeci">#define DHCP_OPTION_MESSAGE_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00156">dhcp.h:156</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga511ee3deb3240635f5ec6a1709c6d741"><div class="ttname"><a href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a></div><div class="ttdeci">#define LWIP_DBG_STATE</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00085">debug.h:85</a></div></div>
<div class="ttc" id="aip__addr_8h_html"><div class="ttname"><a href="ip__addr_8h.html">ip_addr.h</a></div></div>
<div class="ttc" id="astructpbuf_html_a8d32dc3e964369d4eec638fc37fbc460"><div class="ttname"><a href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">pbuf::payload</a></div><div class="ttdeci">void * payload</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00147">pbuf.h:147</a></div></div>
<div class="ttc" id="aprot_2dhcp_8h_html_ac6c1fce157c3297412cfb28d0822a93b"><div class="ttname"><a href="prot_2dhcp_8h.html#ac6c1fce157c3297412cfb28d0822a93b">DHCP_OPTION_BROADCAST</a></div><div class="ttdeci">#define DHCP_OPTION_BROADCAST</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dhcp_8h_source.html#l00146">dhcp.h:146</a></div></div>
<div class="ttc" id="agroup__netif_html_ga94a4c24c988afc0a577387730f303b19"><div class="ttname"><a href="group__netif.html#ga94a4c24c988afc0a577387730f303b19">netif_is_up</a></div><div class="ttdeci">#define netif_is_up(netif)</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00409">netif.h:409</a></div></div>
<div class="ttc" id="afat__string_8h_html_a070d2ce7b6bb7e5c05602aa8c308d0c4"><div class="ttname"><a href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a></div><div class="ttdeci">#define NULL</div><div class="ttdef"><b>Definition:</b> <a href="fat__string_8h_source.html#l00017">fat_string.h:17</a></div></div>
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