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<div class="title">tcp.c</div> </div>
</div><!--header-->
<div class="contents">
<a href="tcp_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="l00016"></a><span class="lineno"> 16</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * Copyright (c) 2001-2004 Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</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="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</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="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</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="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#if LWIP_TCP </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="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include "<a class="code" href="def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#include "<a class="code" href="mem_8h.html">net/mem.h</a>"</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#include "<a class="code" href="memp_8h.html">net/memp.h</a>"</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#include "<a class="code" href="tcp_8h.html">net/tcp.h</a>"</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#include "<a class="code" href="tcp__priv_8h.html">net/priv/tcp_priv.h</a>"</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#include "<a class="code" href="debug_8h.html">net/debug.h</a>"</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#include "<a class="code" href="stats_8h.html">net/stats.h</a>"</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#include "<a class="code" href="ip6_8h.html">net/ip6.h</a>"</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#include "<a class="code" href="ip6__addr_8h.html">net/ip6_addr.h</a>"</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#include "<a class="code" href="nd6_8h.html">net/nd6.h</a>"</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="string_8h.html">string.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">#ifdef LWIP_HOOK_FILENAME</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#include LWIP_HOOK_FILENAME</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#ifndef TCP_LOCAL_PORT_RANGE_START</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">/* From http://www.iana.org/assignments/port-numbers:</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> "The Dynamic and/or Private Ports are those from 49152 through 65535" */</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#define TCP_LOCAL_PORT_RANGE_START 0xc000</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#define TCP_LOCAL_PORT_RANGE_END 0xffff</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#define TCP_ENSURE_LOCAL_PORT_RANGE(port) ((u16_t)(((port) & ~TCP_LOCAL_PORT_RANGE_START) + TCP_LOCAL_PORT_RANGE_START))</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#if LWIP_TCP_KEEPALIVE</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#define TCP_KEEP_DUR(pcb) ((pcb)->keep_cnt * (pcb)->keep_intvl)</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#define TCP_KEEP_INTVL(pcb) ((pcb)->keep_intvl)</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_TCP_KEEPALIVE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#define TCP_KEEP_DUR(pcb) TCP_MAXIDLE</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#define TCP_KEEP_INTVL(pcb) TCP_KEEPINTVL_DEFAULT</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_TCP_KEEPALIVE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment">/* As initial send MSS, we use TCP_MSS but limit it to 536. */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#if TCP_MSS > 536</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor">#define INITIAL_MSS 536</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#define INITIAL_MSS TCP_MSS</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> tcp_state_str[] = {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="stringliteral">"CLOSED"</span>,</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="stringliteral">"LISTEN"</span>,</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="stringliteral">"SYN_SENT"</span>,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="stringliteral">"SYN_RCVD"</span>,</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="stringliteral">"ESTABLISHED"</span>,</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="stringliteral">"FIN_WAIT_1"</span>,</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="stringliteral">"FIN_WAIT_2"</span>,</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="stringliteral">"CLOSE_WAIT"</span>,</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="stringliteral">"CLOSING"</span>,</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="stringliteral">"LAST_ACK"</span>,</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="stringliteral">"TIME_WAIT"</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</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="comment">/* last local TCP port */</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> tcp_port = TCP_LOCAL_PORT_RANGE_START;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">/* Incremented every coarse grained timer shot (typically every 500 ms). */</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> tcp_ticks;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tcp_backoff[13] =</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  { 1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7};</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">/* Times per slowtmr hits */</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tcp_persist_backoff[7] = { 3, 6, 12, 24, 48, 96, 120 };</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment">/* The TCP PCB lists. */</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">struct </span>tcp_pcb *tcp_bound_pcbs;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">union </span>tcp_listen_pcbs_t tcp_listen_pcbs;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">struct </span>tcp_pcb *tcp_active_pcbs;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">struct </span>tcp_pcb *tcp_tw_pcbs;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">struct </span>tcp_pcb ** <span class="keyword">const</span> tcp_pcb_lists[] = {&tcp_listen_pcbs.pcbs, &tcp_bound_pcbs,</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  &tcp_active_pcbs, &tcp_tw_pcbs};</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tcp_active_pcbs_changed;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tcp_timer;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tcp_timer_ctr;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> tcp_new_port(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_close_shutdown_fin(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> tcp_init(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#if LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS && defined(LWIP_RAND)</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  tcp_port = TCP_ENSURE_LOCAL_PORT_RANGE(LWIP_RAND());</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS && defined(LWIP_RAND) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> tcp_tmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> {</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">/* Call tcp_fasttmr() every 250 ms */</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  tcp_fasttmr();</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="keywordflow">if</span> (++tcp_timer & 1) {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="comment">/* Call tcp_slowtmr() every 500 ms, i.e., every other timer</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> tcp_tmr() is called. */</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  tcp_slowtmr();</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> }</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> tcp_remove_listener(<span class="keyword">struct</span> tcp_pcb *list, <span class="keyword">struct</span> tcp_pcb_listen *lpcb)</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">for</span> (pcb = list; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (pcb->listener == lpcb) {</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  pcb->listener = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  }</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  }</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> tcp_listen_closed(<span class="keyword">struct</span> tcp_pcb *pcb)</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="preprocessor">#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordtype">size_t</span> i;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pcb != NULL"</span>, pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pcb->state == LISTEN"</span>, pcb->state == LISTEN);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">for</span> (i = 1; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(tcp_pcb_lists); i++) {</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  tcp_remove_listener(*tcp_pcb_lists[i], (<span class="keyword">struct</span> tcp_pcb_listen*)pcb);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(pcb);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  </div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor">#if TCP_LISTEN_BACKLOG</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> tcp_backlog_delayed(<span class="keyword">struct</span> tcp_pcb* pcb)</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> {</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pcb != NULL"</span>, pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">if</span> ((pcb->flags & TF_BACKLOGPEND) == 0) {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span> (pcb->listener != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  pcb->listener->accepts_pending++;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"accepts_pending != 0"</span>, pcb->listener->accepts_pending != 0);</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  pcb->flags |= TF_BACKLOGPEND;</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>  }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> }</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> tcp_backlog_accepted(<span class="keyword">struct</span> tcp_pcb* pcb)</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> {</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pcb != NULL"</span>, pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> ((pcb->flags & TF_BACKLOGPEND) != 0) {</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (pcb->listener != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"accepts_pending != 0"</span>, pcb->listener->accepts_pending != 0);</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  pcb->listener->accepts_pending--;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  pcb->flags &= ~TF_BACKLOGPEND;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</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="preprocessor">#endif </span><span class="comment">/* TCP_LISTEN_BACKLOG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  </div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> tcp_close_shutdown(<span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> rst_on_unacked_data)</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="keywordflow">if</span> (rst_on_unacked_data && ((pcb->state == ESTABLISHED) || (pcb->state == CLOSE_WAIT))) {</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">if</span> ((pcb->refused_data != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (pcb->rcv_wnd != TCP_WND_MAX(pcb))) {</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">/* Not all data received by application, send RST to tell the remote</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment"> side about this. */</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pcb->flags & TF_RXCLOSED"</span>, pcb->flags & TF_RXCLOSED);</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="comment">/* don't call tcp_abort here: we must not deallocate the pcb since</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment"> that might not be expected when calling tcp_close */</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  tcp_rst(pcb->snd_nxt, pcb->rcv_nxt, &pcb->local_ip, &pcb->remote_ip,</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  pcb->local_port, pcb->remote_port);</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  </div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  tcp_pcb_purge(pcb);</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  TCP_RMV_ACTIVE(pcb);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">if</span> (pcb->state == ESTABLISHED) {</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="comment">/* move to TIME_WAIT since we close actively */</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  pcb->state = TIME_WAIT;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  TCP_REG(&tcp_tw_pcbs, pcb);</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">/* CLOSE_WAIT: deallocate the pcb since we already sent a RST for it */</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">if</span> (tcp_input_pcb == pcb) {</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">/* prevent using a deallocated pcb: free it from tcp_input later */</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  tcp_trigger_input_pcb_close();</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb);</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  }</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="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  }</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  </div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="comment">/* - states which free the pcb are handled here,</span></div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="comment"> - states which send FIN and change state are handled in tcp_close_shutdown_fin() */</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">switch</span> (pcb->state) {</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">case</span> CLOSED:</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">/* Closing a pcb in the CLOSED state might seem erroneous,</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="comment"> * however, it is in this state once allocated and as yet unused</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment"> * and the user needs some way to free it should the need arise.</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="comment"> * Calling tcp_close() with a pcb that has already been closed, (i.e. twice)</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="comment"> * or for a pcb that has been used and then entered the CLOSED state</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="comment"> * is erroneous, but this should never happen as the pcb has in those cases</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="comment"> * been freed, and so any remaining handles are bogus. */</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">if</span> (pcb->local_port != 0) {</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  TCP_RMV(&tcp_bound_pcbs, pcb);</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  }</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb);</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">case</span> LISTEN:</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  tcp_listen_closed(pcb);</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  tcp_pcb_remove(&tcp_listen_pcbs.pcbs, pcb);</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB_LISTEN, pcb);</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">case</span> SYN_SENT:</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  TCP_PCB_REMOVE_ACTIVE(pcb);</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb);</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.tcpattemptfails);</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> tcp_close_shutdown_fin(pcb);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> }</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> tcp_close_shutdown_fin(<span class="keyword">struct</span> tcp_pcb *pcb)</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> {</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pcb != NULL"</span>, pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  </div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">switch</span> (pcb->state) {</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">case</span> SYN_RCVD:</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  err = tcp_send_fin(pcb);</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  tcp_backlog_accepted(pcb);</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.tcpattemptfails);</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  pcb->state = FIN_WAIT_1;</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  }</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordflow">case</span> ESTABLISHED:</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  err = tcp_send_fin(pcb);</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.tcpestabresets);</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  pcb->state = FIN_WAIT_1;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  }</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">case</span> CLOSE_WAIT:</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  err = tcp_send_fin(pcb);</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.tcpestabresets);</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  pcb->state = LAST_ACK;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  }</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="comment">/* Has already been closed, do nothing. */</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</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>  </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="comment">/* To ensure all data has been sent when tcp_close returns, we have</span></div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="comment"> to make sure tcp_output doesn't fail.</span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="comment"> Since we don't really have to ensure all data has been sent when tcp_close</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="comment"> returns (unsent data is sent from tcp timer functions, also), we don't care</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="comment"> for the return value of tcp_output for now. */</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  tcp_output(pcb);</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>) {</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="comment">/* Mark this pcb for closing. Closing is retried from tcp_tmr. */</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  pcb->flags |= TF_CLOSEPEND;</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">/* We have to return ERR_OK from here to indicate to the callers that this</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="comment"> pcb should not be used any more as it will be freed soon via tcp_tmr.</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="comment"> This is OK here since sending FIN does not guarantee a time frime for</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span> <span class="comment"> actually freeing the pcb, either (it is left in closure states for</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> <span class="comment"> remote ACK or timeout) */</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</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="keywordflow">return</span> err;</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> }</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  </div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> tcp_close(<span class="keyword">struct</span> tcp_pcb *pcb)</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_close: closing in "</span>));</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  tcp_debug_print_state(pcb->state);</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordflow">if</span> (pcb->state != LISTEN) {</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="comment">/* Set a flag not to receive any more data... */</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  pcb->flags |= TF_RXCLOSED;</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  }</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="comment">/* ... and close */</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">return</span> tcp_close_shutdown(pcb, 1);</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>  </div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> tcp_shutdown(<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keywordtype">int</span> shut_rx, <span class="keywordtype">int</span> shut_tx)</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> {</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">if</span> (pcb->state == LISTEN) {</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab0036c51817b5200bfe8157cc4115b27">ERR_CONN</a>;</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  }</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keywordflow">if</span> (shut_rx) {</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">/* shut down the receive side: set a flag not to receive any more data... */</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  pcb->flags |= TF_RXCLOSED;</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keywordflow">if</span> (shut_tx) {</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="comment">/* shutting down the tx AND rx side is the same as closing for the raw API */</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> tcp_close_shutdown(pcb, 1);</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">/* ... and free buffered data */</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">if</span> (pcb->refused_data != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(pcb->refused_data);</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  pcb->refused_data = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  }</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  }</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">if</span> (shut_tx) {</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="comment">/* This can't happen twice since if it succeeds, the pcb's state is changed.</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="comment"> Only close in these states as the others directly deallocate the PCB */</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordflow">switch</span> (pcb->state) {</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordflow">case</span> SYN_RCVD:</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">case</span> ESTABLISHED:</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keywordflow">case</span> CLOSE_WAIT:</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">return</span> tcp_close_shutdown(pcb, (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)shut_rx);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="comment">/* Not (yet?) connected, cannot shutdown the TX side as that would bring us</span></div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="comment"> into CLOSED state, where the PCB is deallocated. */</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab0036c51817b5200bfe8157cc4115b27">ERR_CONN</a>;</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  }</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  }</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> }</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  </div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> tcp_abandon(<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keywordtype">int</span> <a class="code" href="fdc_8h.html#a3aea9deb2a0bfea9ff05a898f4822e31">reset</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>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> seqno, ackno;</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  tcp_err_fn errf;</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordtype">void</span> *errf_arg;</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  </div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="comment">/* pcb->state LISTEN not allowed here */</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"don't call tcp_abort/tcp_abandon for listen-pcbs"</span>,</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  pcb->state != LISTEN);</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">/* Figure out on which TCP PCB list we are, and remove us. If we</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="comment"> are in an active state, call the receive function associated with</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> <span class="comment"> the PCB with a NULL argument, and send an RST to the remote end. */</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordflow">if</span> (pcb->state == TIME_WAIT) {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  tcp_pcb_remove(&tcp_tw_pcbs, pcb);</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb);</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordtype">int</span> send_rst = 0;</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> local_port = 0;</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keyword">enum</span> tcp_state last_state;</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  seqno = pcb->snd_nxt;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  ackno = pcb->rcv_nxt;</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  errf = pcb->errf;</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  errf_arg = pcb->callback_arg;</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="keywordflow">if</span> (pcb->state == CLOSED) {</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keywordflow">if</span> (pcb->local_port != 0) {</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">/* bound, not yet opened */</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  TCP_RMV(&tcp_bound_pcbs, pcb);</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="keywordflow">else</span> {</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  send_rst = <a class="code" href="fdc_8h.html#a3aea9deb2a0bfea9ff05a898f4822e31">reset</a>;</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  local_port = pcb->local_port;</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  TCP_PCB_REMOVE_ACTIVE(pcb);</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  }</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">if</span> (pcb->unacked != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  tcp_segs_free(pcb->unacked);</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  }</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keywordflow">if</span> (pcb->unsent != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  tcp_segs_free(pcb->unsent);</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  }</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span> <span class="preprocessor">#if TCP_QUEUE_OOSEQ</span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">if</span> (pcb->ooseq != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  tcp_segs_free(pcb->ooseq);</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  }</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  tcp_backlog_accepted(pcb);</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordflow">if</span> (send_rst) {</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a37596f7bbb9b7663826244ba54486679">TCP_RST_DEBUG</a>, (<span class="stringliteral">"tcp_abandon: sending RST\n"</span>));</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  tcp_rst(seqno, ackno, &pcb->local_ip, &pcb->remote_ip, local_port, pcb->remote_port);</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>  last_state = pcb->state;</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb);</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  TCP_EVENT_ERR(last_state, errf, errf_arg, <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>);</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  }</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> }</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  </div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span> tcp_abort(<span class="keyword">struct</span> tcp_pcb *pcb)</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> {</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  tcp_abandon(pcb, 1);</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span> }</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  </div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> tcp_bind(<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *ipaddr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port)</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span> {</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keywordtype">int</span> max_pcb_list = NUM_TCP_PCB_LISTS;</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keyword">struct </span>tcp_pcb *cpcb;</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  </div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="comment">/* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */</span></div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="keywordflow">if</span> (ipaddr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  ipaddr = IP4_ADDR_ANY;</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  }</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  </div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="comment">/* still need to check for ipaddr == NULL in IPv6 only case */</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (ipaddr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  }</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  </div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"tcp_bind: can only bind in state CLOSED"</span>, pcb->state == CLOSED, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>);</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  </div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> <span class="preprocessor">#if SO_REUSE</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="comment">/* Unless the REUSEADDR flag is set,</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> <span class="comment"> we have to check the pcbs in TIME-WAIT state, also.</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> <span class="comment"> We do not dump TIME_WAIT pcb's; they can still be matched by incoming</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="comment"> packets using both local and remote IP addresses and ports to distinguish.</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="keywordflow">if</span> (<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>)) {</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  max_pcb_list = NUM_TCP_PCB_LISTS_NO_TIME_WAIT;</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  }</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> <span class="preprocessor">#endif </span><span class="comment">/* SO_REUSE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  </div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keywordflow">if</span> (port == 0) {</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  port = tcp_new_port();</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="keywordflow">if</span> (port == 0) {</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a>;</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  }</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="comment">/* Check if the address already is in use (on all lists) */</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="keywordflow">for</span> (i = 0; i < max_pcb_list; i++) {</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordflow">for</span> (cpcb = *tcp_pcb_lists[i]; cpcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; cpcb = cpcb->next) {</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="keywordflow">if</span> (cpcb->local_port == port) {</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span> <span class="preprocessor">#if SO_REUSE</span></div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="comment">/* Omit checking for the same port if both pcbs have REUSEADDR set.</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span> <span class="comment"> For SO_REUSEADDR, the duplicate-check for a 5-tuple is done in</span></div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span> <span class="comment"> tcp_connect. */</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>) ||</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  !<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(cpcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>))</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span> <span class="preprocessor">#endif </span><span class="comment">/* SO_REUSE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  {</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="comment">/* @todo: check accept_any_ip_version */</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">if</span> ((<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(ipaddr) == <a class="code" href="ip__addr_8h.html#a1578e34703e86711a7fb7dcc3857004d">IP_IS_V6_VAL</a>(cpcb->local_ip)) &&</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  (<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(&cpcb->local_ip) ||</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(ipaddr) ||</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&cpcb->local_ip, ipaddr))) {</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>;</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  }</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  }</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  }</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  }</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  }</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  }</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  </div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(ipaddr)) {</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <a class="code" href="ip__addr_8h.html#a40db7feae2b92f7a7a01d65a85b06e18">ip_addr_set</a>(&pcb->local_ip, ipaddr);</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  }</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  pcb->local_port = port;</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  TCP_REG(&tcp_bound_pcbs, pcb);</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_bind: bind to port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, port));</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> }</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  </div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span> tcp_accept_null(<span class="keywordtype">void</span> *arg, <span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err)</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span> {</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(arg);</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(err);</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  </div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  tcp_abort(pcb);</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="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>;</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span> }</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  </div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span> <span class="keyword">struct </span>tcp_pcb *</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> tcp_listen_with_backlog(<span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> backlog)</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>  <span class="keywordflow">return</span> tcp_listen_with_backlog_and_err(pcb, backlog, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span> }</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  </div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span> <span class="keyword">struct </span>tcp_pcb *</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span> tcp_listen_with_backlog_and_err(<span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> backlog, <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> *err)</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span> {</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="keyword">struct </span>tcp_pcb_listen *lpcb = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> res;</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  </div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(backlog);</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"tcp_listen: pcb already connected"</span>, pcb->state == CLOSED, res = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa5176d9fecf8ec43d3bc49f4e6c3f7f5">ERR_CLSD</a>; <span class="keywordflow">goto</span> done);</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  </div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="comment">/* already listening? */</span></div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="keywordflow">if</span> (pcb->state == LISTEN) {</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  lpcb = (<span class="keyword">struct </span>tcp_pcb_listen*)pcb;</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  res = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcae6f9c1e4c18ca844f7934307d4cc30e5">ERR_ALREADY</a>;</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  <span class="keywordflow">goto</span> done;</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  }</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span> <span class="preprocessor">#if SO_REUSE</span></div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keywordflow">if</span> (<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>)) {</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  <span class="comment">/* Since SOF_REUSEADDR allows reusing a local address before the pcb's usage</span></div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span> <span class="comment"> is declared (listen-/connection-pcb), we have to make sure now that</span></div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span> <span class="comment"> this port is only used once for every local IP. */</span></div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keywordflow">for</span> (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; lpcb = lpcb->next) {</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keywordflow">if</span> ((lpcb->local_port == pcb->local_port) &&</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&lpcb->local_ip, &pcb->local_ip)) {</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="comment">/* this address/port is already used */</span></div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  lpcb = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  res = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>;</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="keywordflow">goto</span> done;</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  }</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  }</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  }</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span> <span class="preprocessor">#endif </span><span class="comment">/* SO_REUSE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  lpcb = (<span class="keyword">struct </span>tcp_pcb_listen *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_PCB_LISTEN);</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keywordflow">if</span> (lpcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  res = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <span class="keywordflow">goto</span> done;</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  }</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  lpcb->callback_arg = pcb->callback_arg;</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  lpcb->local_port = pcb->local_port;</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  lpcb->state = LISTEN;</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  lpcb->prio = pcb->prio;</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  lpcb->so_options = pcb->so_options;</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  lpcb->ttl = pcb->ttl;</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  lpcb->tos = pcb->tos;</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <a class="code" href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a>(lpcb->remote_ip, pcb->local_ip.type);</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(lpcb->local_ip, pcb->local_ip);</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="keywordflow">if</span> (pcb->local_port != 0) {</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  TCP_RMV(&tcp_bound_pcbs, pcb);</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  }</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb);</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  lpcb->accept = tcp_accept_null;</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span> <span class="preprocessor">#if TCP_LISTEN_BACKLOG</span></div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  lpcb->accepts_pending = 0;</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  tcp_backlog_set(lpcb, backlog);</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_LISTEN_BACKLOG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  TCP_REG(&tcp_listen_pcbs.pcbs, (<span class="keyword">struct</span> tcp_pcb *)lpcb);</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  res = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span> done:</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="keywordflow">if</span> (err != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  *err = res;</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  }</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="keywordflow">return</span> (<span class="keyword">struct</span> tcp_pcb *)lpcb;</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span> }</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  </div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span> tcp_update_rcv_ann_wnd(<span class="keyword">struct</span> tcp_pcb *pcb)</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>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> new_right_edge = pcb->rcv_nxt + pcb->rcv_wnd;</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  </div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="keywordflow">if</span> (TCP_SEQ_GEQ(new_right_edge, pcb->rcv_ann_right_edge + <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>((<a class="code" href="lwipopts_8h.html#a7f535a6efb5cdf86c3210e35ece1d6a7">TCP_WND</a> / 2), pcb->mss))) {</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="comment">/* we can advertise more window */</span></div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  pcb->rcv_ann_wnd = pcb->rcv_wnd;</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="keywordflow">return</span> new_right_edge - pcb->rcv_ann_right_edge;</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keywordflow">if</span> (TCP_SEQ_GT(pcb->rcv_nxt, pcb->rcv_ann_right_edge)) {</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="comment">/* Can happen due to other end sending out of advertised window,</span></div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span> <span class="comment"> * but within actual available (but not yet advertised) window */</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  pcb->rcv_ann_wnd = 0;</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="comment">/* keep the right edge of window constant */</span></div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> new_rcv_ann_wnd = pcb->rcv_ann_right_edge - pcb->rcv_nxt;</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span> <span class="preprocessor">#if !LWIP_WND_SCALE</span></div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"new_rcv_ann_wnd <= 0xffff"</span>, new_rcv_ann_wnd <= 0xffff);</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  pcb->rcv_ann_wnd = (tcpwnd_size_t)new_rcv_ann_wnd;</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>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  }</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span> }</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  </div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span> tcp_recved(<span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> len)</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span> {</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="keywordtype">int</span> wnd_inflation;</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  </div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  <span class="comment">/* pcb->state LISTEN not allowed here */</span></div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"don't call tcp_recved for listen-pcbs"</span>,</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  pcb->state != LISTEN);</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  </div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  pcb->rcv_wnd += len;</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <span class="keywordflow">if</span> (pcb->rcv_wnd > TCP_WND_MAX(pcb)) {</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  pcb->rcv_wnd = TCP_WND_MAX(pcb);</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pcb->rcv_wnd == 0) {</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <span class="comment">/* rcv_wnd overflowed */</span></div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <span class="keywordflow">if</span> ((pcb->state == CLOSE_WAIT) || (pcb->state == LAST_ACK)) {</div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  <span class="comment">/* In passive close, we allow this, since the FIN bit is added to rcv_wnd</span></div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span> <span class="comment"> by the stack itself, since it is not mandatory for an application</span></div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span> <span class="comment"> to call tcp_recved() for the FIN bit, but e.g. the netconn API does so. */</span></div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  pcb->rcv_wnd = TCP_WND_MAX(pcb);</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_recved: len wrapped rcv_wnd\n"</span>, 0);</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  }</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>  </div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  wnd_inflation = tcp_update_rcv_ann_wnd(pcb);</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  </div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  <span class="comment">/* If the change in the right edge of window is significant (default</span></div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span> <span class="comment"> * watermark is TCP_WND/4), then send an explicit update now.</span></div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span> <span class="comment"> * Otherwise wait for a packet to be sent in the normal course of</span></div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span> <span class="comment"> * events (or more window to be available later) */</span></div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="keywordflow">if</span> (wnd_inflation >= <a class="code" href="lwipopts_8h.html#a5d45732ba3a8438b141096d86e07ef8d">TCP_WND_UPDATE_THRESHOLD</a>) {</div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  tcp_ack_now(pcb);</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  tcp_output(pcb);</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</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>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_recved: received %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" bytes, wnd %"</span>TCPWNDSIZE_F<span class="stringliteral">" (%"</span>TCPWNDSIZE_F<span class="stringliteral">").\n"</span>,</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  len, pcb->rcv_wnd, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(TCP_WND_MAX(pcb) - pcb->rcv_wnd)));</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span> }</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  </div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span> tcp_new_port(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span> {</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> n = 0;</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  </div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span> again:</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  <span class="keywordflow">if</span> (tcp_port++ == TCP_LOCAL_PORT_RANGE_END) {</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  tcp_port = TCP_LOCAL_PORT_RANGE_START;</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="comment">/* Check all PCB lists. */</span></div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="keywordflow">for</span> (i = 0; i < NUM_TCP_PCB_LISTS; i++) {</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keywordflow">for</span> (pcb = *tcp_pcb_lists[i]; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="keywordflow">if</span> (pcb->local_port == tcp_port) {</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <span class="keywordflow">if</span> (++n > (TCP_LOCAL_PORT_RANGE_END - TCP_LOCAL_PORT_RANGE_START)) {</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  }</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keywordflow">goto</span> again;</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  }</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  }</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  }</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  <span class="keywordflow">return</span> tcp_port;</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span> }</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  </div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span> tcp_connect(<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *ipaddr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port,</div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  tcp_connected_fn connected)</div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span> {</div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> ret;</div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> iss;</div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> old_local_port;</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  </div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (ipaddr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  }</div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  </div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"tcp_connect: can only connect from state CLOSED"</span>, pcb->state == CLOSED, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca8543e1d6422fed7b318d97e08dcbaa33">ERR_ISCONN</a>);</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  </div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_connect to port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, port));</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <a class="code" href="ip__addr_8h.html#a40db7feae2b92f7a7a01d65a85b06e18">ip_addr_set</a>(&pcb->remote_ip, ipaddr);</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  pcb->remote_port = port;</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  </div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">/* check if we have a route to the remote host */</span></div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(&pcb->local_ip)) {</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="comment">/* no local IP address set, yet. */</span></div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</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="l00898"></a><span class="lineno"> 898</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *local_ip;</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <a class="code" href="ip_8h.html#ae392fc1ebc42a4b08f73d42c04089be9">ip_route_get_local_ip</a>(&pcb->local_ip, &pcb->remote_ip, <a class="code" href="structnetif.html">netif</a>, local_ip);</div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</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>) || (local_ip == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="comment">/* Don't even try to send a SYN packet if we have no route</span></div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span> <span class="comment"> since that will fail. */</span></div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a>;</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  }</div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="comment">/* Use the address as local address of the pcb. */</span></div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(pcb->local_ip, *local_ip);</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="l00909"></a><span class="lineno"> 909</span>  old_local_port = pcb->local_port;</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="keywordflow">if</span> (pcb->local_port == 0) {</div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  pcb->local_port = tcp_new_port();</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <span class="keywordflow">if</span> (pcb->local_port == 0) {</div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca05c91366f1b5203a5db9a241b415cd63">ERR_BUF</a>;</div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  }</div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span> <span class="preprocessor">#if SO_REUSE</span></div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <span class="keywordflow">if</span> (<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>)) {</div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  <span class="comment">/* Since SOF_REUSEADDR allows reusing a local address, we have to make sure</span></div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span> <span class="comment"> now that the 5-tuple is unique. */</span></div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="keyword">struct </span>tcp_pcb *cpcb;</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="comment">/* Don't check listen- and bound-PCBs, check active- and TIME-WAIT PCBs. */</span></div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="keywordflow">for</span> (i = 2; i < NUM_TCP_PCB_LISTS; i++) {</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  <span class="keywordflow">for</span> (cpcb = *tcp_pcb_lists[i]; cpcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; cpcb = cpcb->next) {</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  <span class="keywordflow">if</span> ((cpcb->local_port == pcb->local_port) &&</div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  (cpcb->remote_port == port) &&</div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&cpcb->local_ip, &pcb->local_ip) &&</div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&cpcb->remote_ip, ipaddr)) {</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  <span class="comment">/* linux returns EISCONN here, but ERR_USE should be OK for us */</span></div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>;</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>  }</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  }</div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  }</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span> <span class="preprocessor">#endif </span><span class="comment">/* SO_REUSE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  }</div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  </div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  iss = tcp_next_iss(pcb);</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  pcb->rcv_nxt = 0;</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  pcb->snd_nxt = iss;</div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  pcb->lastack = iss - 1;</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  pcb->snd_wl2 = iss - 1;</div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  pcb->snd_lbb = iss - 1;</div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="comment">/* Start with a window that does not need scaling. When window scaling is</span></div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span> <span class="comment"> enabled and used, the window is enlarged when both sides agree on scaling. */</span></div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  pcb->rcv_wnd = pcb->rcv_ann_wnd = TCPWND_MIN16(<a class="code" href="lwipopts_8h.html#a7f535a6efb5cdf86c3210e35ece1d6a7">TCP_WND</a>);</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  pcb->rcv_ann_right_edge = pcb->rcv_nxt;</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  pcb->snd_wnd = <a class="code" href="lwipopts_8h.html#a7f535a6efb5cdf86c3210e35ece1d6a7">TCP_WND</a>;</div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  <span class="comment">/* As initial send MSS, we use TCP_MSS but limit it to 536.</span></div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span> <span class="comment"> The send MSS is updated when an MSS option is received. */</span></div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  pcb->mss = INITIAL_MSS;</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span> <span class="preprocessor">#if TCP_CALCULATE_EFF_SEND_MSS</span></div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  pcb->mss = tcp_eff_send_mss(pcb->mss, &pcb->local_ip, &pcb->remote_ip);</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_CALCULATE_EFF_SEND_MSS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  pcb->cwnd = 1;</div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  pcb->connected = connected;</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(connected);</div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  </div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="comment">/* Send a SYN together with the MSS option. */</span></div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  ret = tcp_enqueue_flags(pcb, <a class="code" href="prot_2tcp_8h.html#a6020613f5062417d9811cfa837215c83">TCP_SYN</a>);</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <span class="keywordflow">if</span> (ret == <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>  <span class="comment">/* SYN segment was enqueued, changed the pcbs state now */</span></div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  pcb->state = SYN_SENT;</div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  <span class="keywordflow">if</span> (old_local_port != 0) {</div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  TCP_RMV(&tcp_bound_pcbs, pcb);</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  }</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  TCP_REG_ACTIVE(pcb);</div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.tcpactiveopens);</div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  </div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  tcp_output(pcb);</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>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span> }</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  </div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span> tcp_slowtmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span> {</div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  <span class="keyword">struct </span>tcp_pcb *pcb, *prev;</div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  tcpwnd_size_t eff_wnd;</div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pcb_remove; <span class="comment">/* flag if a PCB should be removed */</span></div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pcb_reset; <span class="comment">/* flag if a RST should be sent when removing */</span></div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  </div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  </div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  ++tcp_ticks;</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  ++tcp_timer_ctr;</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  </div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span> tcp_slowtmr_start:</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  <span class="comment">/* Steps through all of the active PCBs. */</span></div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  prev = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  pcb = tcp_active_pcbs;</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="keywordflow">if</span> (pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: no active pcbs\n"</span>));</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  }</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  <span class="keywordflow">while</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: processing active pcb\n"</span>));</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: active pcb->state != CLOSED\n"</span>, pcb->state != CLOSED);</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: active pcb->state != LISTEN\n"</span>, pcb->state != LISTEN);</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: active pcb->state != TIME-WAIT\n"</span>, pcb->state != TIME_WAIT);</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  <span class="keywordflow">if</span> (pcb->last_timer == tcp_timer_ctr) {</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  <span class="comment">/* skip this pcb, we have already processed it */</span></div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  pcb = pcb->next;</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  }</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  pcb->last_timer = tcp_timer_ctr;</div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  </div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  pcb_remove = 0;</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  pcb_reset = 0;</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  </div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  <span class="keywordflow">if</span> (pcb->state == SYN_SENT && pcb->nrtx >= <a class="code" href="lwipopts_8h.html#a50b434a8541a4813f7b27f576c05d1b6">TCP_SYNMAXRTX</a>) {</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  ++pcb_remove;</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: max SYN retries reached\n"</span>));</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  }</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pcb->nrtx >= <a class="code" href="lwipopts_8h.html#a0dee0911197855bdf19ef79778c241a6">TCP_MAXRTX</a>) {</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  ++pcb_remove;</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: max DATA retries reached\n"</span>));</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="keywordflow">if</span> (pcb->persist_backoff > 0) {</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <span class="comment">/* If snd_wnd is zero, use persist timer to send 1 byte probes</span></div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span> <span class="comment"> * instead of using the standard retransmission mechanism. */</span></div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> backoff_cnt = tcp_persist_backoff[pcb->persist_backoff-1];</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <span class="keywordflow">if</span> (pcb->persist_cnt < backoff_cnt) {</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  pcb->persist_cnt++;</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  }</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  <span class="keywordflow">if</span> (pcb->persist_cnt >= backoff_cnt) {</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  <span class="keywordflow">if</span> (tcp_zero_window_probe(pcb) == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  pcb->persist_cnt = 0;</div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  <span class="keywordflow">if</span> (pcb->persist_backoff < <span class="keyword">sizeof</span>(tcp_persist_backoff)) {</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  pcb->persist_backoff++;</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  }</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="keywordflow">else</span> {</div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="comment">/* Increase the retransmission timer if it is running */</span></div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  <span class="keywordflow">if</span> (pcb->rtime >= 0) {</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  ++pcb->rtime;</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  }</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  </div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <span class="keywordflow">if</span> (pcb->unacked != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> && pcb->rtime >= pcb->rto) {</div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="comment">/* Time for a retransmission. */</span></div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#ad6e52e37415d0d0cbe4931a28f5a9662">TCP_RTO_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: rtime %"</span><a class="code" href="group__compiler__abstraction.html#gac05a82d37afb251470f5e17ca15ab6e9">S16_F</a></div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="stringliteral">" pcb->rto %"</span><a class="code" href="group__compiler__abstraction.html#gac05a82d37afb251470f5e17ca15ab6e9">S16_F</a><span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  pcb->rtime, pcb->rto));</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>  <span class="comment">/* Double retransmission time-out unless we are trying to</span></div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span> <span class="comment"> * connect to somebody (i.e., we are in SYN_SENT). */</span></div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  <span class="keywordflow">if</span> (pcb->state != SYN_SENT) {</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> backoff_idx = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(pcb->nrtx, <span class="keyword">sizeof</span>(tcp_backoff)-1);</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  pcb->rto = ((pcb->sa >> 3) + pcb->sv) << tcp_backoff[backoff_idx];</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  }</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  </div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  <span class="comment">/* Reset the retransmission timer. */</span></div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  pcb->rtime = 0;</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>  <span class="comment">/* Reduce congestion window and ssthresh. */</span></div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  eff_wnd = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(pcb->cwnd, pcb->snd_wnd);</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  pcb->ssthresh = eff_wnd >> 1;</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  <span class="keywordflow">if</span> (pcb->ssthresh < (tcpwnd_size_t)(pcb->mss << 1)) {</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  pcb->ssthresh = (pcb->mss << 1);</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  }</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  pcb->cwnd = pcb->mss;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a66df03d8192cd978d3321a9d68bf5411">TCP_CWND_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: cwnd %"</span>TCPWNDSIZE_F</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="stringliteral">" ssthresh %"</span>TCPWNDSIZE_F<span class="stringliteral">"\n"</span>,</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  pcb->cwnd, pcb->ssthresh));</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  </div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="comment">/* The following needs to be called AFTER cwnd is set to one</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span> <span class="comment"> mss - STJ */</span></div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  tcp_rexmit_rto(pcb);</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  }</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  }</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  }</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  <span class="comment">/* Check if this PCB has stayed too long in FIN-WAIT-2 */</span></div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <span class="keywordflow">if</span> (pcb->state == FIN_WAIT_2) {</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  <span class="comment">/* If this PCB is in FIN_WAIT_2 because of SHUT_WR don't let it time out. */</span></div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="keywordflow">if</span> (pcb->flags & TF_RXCLOSED) {</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  <span class="comment">/* PCB was fully closed (either through close() or SHUT_RDWR):</span></div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span> <span class="comment"> normal FIN-WAIT timeout handling. */</span></div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) ></div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  TCP_FIN_WAIT_TIMEOUT / TCP_SLOW_INTERVAL) {</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  ++pcb_remove;</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: removing pcb stuck in FIN-WAIT-2\n"</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>  }</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  }</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  </div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  <span class="comment">/* Check if KEEPALIVE should be sent */</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  <span class="keywordflow">if</span> (<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#a1f7f7efb095c77c06af5c5e8ba558d45">SOF_KEEPALIVE</a>) &&</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  ((pcb->state == ESTABLISHED) ||</div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  (pcb->state == CLOSE_WAIT))) {</div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) ></div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  (pcb->keep_idle + TCP_KEEP_DUR(pcb)) / TCP_SLOW_INTERVAL)</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  {</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: KEEPALIVE timeout. Aborting connection to "</span>));</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, &pcb->remote_ip);</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</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>  ++pcb_remove;</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  ++pcb_reset;</div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) ></div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  (pcb->keep_idle + pcb->keep_cnt_sent * TCP_KEEP_INTVL(pcb))</div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  / TCP_SLOW_INTERVAL)</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  {</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  err = tcp_keepalive(pcb);</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  pcb->keep_cnt_sent++;</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</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="l01120"></a><span class="lineno"> 1120</span>  </div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  <span class="comment">/* If this PCB has queued out of sequence data, but has been</span></div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span> <span class="comment"> inactive for too long, will drop the data (it will eventually</span></div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span> <span class="comment"> be retransmitted). */</span></div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span> <span class="preprocessor">#if TCP_QUEUE_OOSEQ</span></div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  <span class="keywordflow">if</span> (pcb->ooseq != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> &&</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  (<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)tcp_ticks - pcb->tmr >= pcb->rto * TCP_OOSEQ_TIMEOUT) {</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  tcp_segs_free(pcb->ooseq);</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  pcb->ooseq = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a66df03d8192cd978d3321a9d68bf5411">TCP_CWND_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: dropping OOSEQ queued data\n"</span>));</div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  }</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  </div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  <span class="comment">/* Check if this PCB has stayed too long in SYN-RCVD */</span></div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="keywordflow">if</span> (pcb->state == SYN_RCVD) {</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) ></div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  TCP_SYN_RCVD_TIMEOUT / TCP_SLOW_INTERVAL) {</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  ++pcb_remove;</div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: removing pcb stuck in SYN-RCVD\n"</span>));</div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  }</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  }</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>  <span class="comment">/* Check if this PCB has stayed too long in LAST-ACK */</span></div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  <span class="keywordflow">if</span> (pcb->state == LAST_ACK) {</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) > 2 * TCP_MSL / TCP_SLOW_INTERVAL) {</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  ++pcb_remove;</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: removing pcb stuck in LAST-ACK\n"</span>));</div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  }</div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  }</div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  </div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  <span class="comment">/* If the PCB should be removed, do it. */</span></div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <span class="keywordflow">if</span> (pcb_remove) {</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  <span class="keyword">struct </span>tcp_pcb *pcb2;</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  tcp_err_fn err_fn = pcb->errf;</div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <span class="keywordtype">void</span> *err_arg;</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  <span class="keyword">enum</span> tcp_state last_state;</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  tcp_pcb_purge(pcb);</div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <span class="comment">/* Remove PCB from tcp_active_pcbs list. */</span></div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  <span class="keywordflow">if</span> (prev != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: middle tcp != tcp_active_pcbs"</span>, pcb != tcp_active_pcbs);</div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  prev->next = pcb->next;</div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  <span class="comment">/* This PCB was the first. */</span></div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: first pcb == tcp_active_pcbs"</span>, tcp_active_pcbs == pcb);</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  tcp_active_pcbs = pcb->next;</div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  }</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  </div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <span class="keywordflow">if</span> (pcb_reset) {</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  tcp_rst(pcb->snd_nxt, pcb->rcv_nxt, &pcb->local_ip, &pcb->remote_ip,</div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  pcb->local_port, pcb->remote_port);</div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  }</div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  </div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  err_arg = pcb->callback_arg;</div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  last_state = pcb->state;</div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  pcb2 = pcb;</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  pcb = pcb->next;</div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb2);</div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  </div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  tcp_active_pcbs_changed = 0;</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  TCP_EVENT_ERR(last_state, err_fn, err_arg, <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>);</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <span class="keywordflow">if</span> (tcp_active_pcbs_changed) {</div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  <span class="keywordflow">goto</span> tcp_slowtmr_start;</div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  }</div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  <span class="comment">/* get the 'next' element now and work with 'prev' below (in case of abort) */</span></div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  prev = pcb;</div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  pcb = pcb->next;</div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  </div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  <span class="comment">/* We check if we should poll the connection. */</span></div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  ++prev->polltmr;</div>
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <span class="keywordflow">if</span> (prev->polltmr >= prev->pollinterval) {</div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  prev->polltmr = 0;</div>
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_slowtmr: polling application\n"</span>));</div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  tcp_active_pcbs_changed = 0;</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  TCP_EVENT_POLL(prev, err);</div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="keywordflow">if</span> (tcp_active_pcbs_changed) {</div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <span class="keywordflow">goto</span> tcp_slowtmr_start;</div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  }</div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  <span class="comment">/* if err == ERR_ABRT, 'prev' is already deallocated */</span></div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  tcp_output(prev);</div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  }</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>  }</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>  </div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  </div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  <span class="comment">/* Steps through all of the TIME-WAIT PCBs. */</span></div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  prev = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  pcb = tcp_tw_pcbs;</div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <span class="keywordflow">while</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: TIME-WAIT pcb->state == TIME-WAIT"</span>, pcb->state == TIME_WAIT);</div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  pcb_remove = 0;</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  </div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  <span class="comment">/* Check if this PCB has stayed long enough in TIME-WAIT */</span></div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) > 2 * TCP_MSL / TCP_SLOW_INTERVAL) {</div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  ++pcb_remove;</div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  }</div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  </div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  <span class="comment">/* If the PCB should be removed, do it. */</span></div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  <span class="keywordflow">if</span> (pcb_remove) {</div>
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  <span class="keyword">struct </span>tcp_pcb *pcb2;</div>
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  tcp_pcb_purge(pcb);</div>
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  <span class="comment">/* Remove PCB from tcp_tw_pcbs list. */</span></div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  <span class="keywordflow">if</span> (prev != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: middle tcp != tcp_tw_pcbs"</span>, pcb != tcp_tw_pcbs);</div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  prev->next = pcb->next;</div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  <span class="comment">/* This PCB was the first. */</span></div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_slowtmr: first pcb == tcp_tw_pcbs"</span>, tcp_tw_pcbs == pcb);</div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  tcp_tw_pcbs = pcb->next;</div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  }</div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  pcb2 = pcb;</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  pcb = pcb->next;</div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_PCB, pcb2);</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  prev = pcb;</div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  pcb = pcb->next;</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  }</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  }</div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span> }</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  </div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span> tcp_fasttmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span> {</div>
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  </div>
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  ++tcp_timer_ctr;</div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  </div>
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span> tcp_fasttmr_start:</div>
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  pcb = tcp_active_pcbs;</div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  </div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  <span class="keywordflow">while</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  <span class="keywordflow">if</span> (pcb->last_timer != tcp_timer_ctr) {</div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  <span class="keyword">struct </span>tcp_pcb *next;</div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  pcb->last_timer = tcp_timer_ctr;</div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <span class="comment">/* send delayed ACKs */</span></div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  <span class="keywordflow">if</span> (pcb->flags & TF_ACK_DELAY) {</div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_fasttmr: delayed ACK\n"</span>));</div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  tcp_ack_now(pcb);</div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  tcp_output(pcb);</div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  pcb->flags &= ~(TF_ACK_DELAY | TF_ACK_NOW);</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>  <span class="comment">/* send pending FIN */</span></div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  <span class="keywordflow">if</span> (pcb->flags & TF_CLOSEPEND) {</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_fasttmr: pending FIN\n"</span>));</div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  pcb->flags &= ~(TF_CLOSEPEND);</div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  tcp_close_shutdown_fin(pcb);</div>
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  }</div>
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  </div>
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  next = pcb->next;</div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  </div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  <span class="comment">/* If there is data which was previously "refused" by upper layer */</span></div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  <span class="keywordflow">if</span> (pcb->refused_data != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  tcp_active_pcbs_changed = 0;</div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  tcp_process_refused_data(pcb);</div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  <span class="keywordflow">if</span> (tcp_active_pcbs_changed) {</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <span class="comment">/* application callback has changed the pcb list: restart the loop */</span></div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  <span class="keywordflow">goto</span> tcp_fasttmr_start;</div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  }</div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  }</div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  pcb = next;</div>
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  pcb = pcb->next;</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>  }</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>  </div>
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span> tcp_txnow(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span> {</div>
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  </div>
<div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>  <span class="keywordflow">for</span> (pcb = tcp_active_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <span class="keywordflow">if</span> (pcb->flags & TF_NAGLEMEMERR) {</div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  tcp_output(pcb);</div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  }</div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  }</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>  </div>
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span> tcp_process_refused_data(<span class="keyword">struct</span> tcp_pcb *pcb)</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="preprocessor">#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE</span></div>
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *rest;</div>
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  <span class="keywordflow">while</span> (pcb->refused_data != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)</div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  {</div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> refused_flags = pcb->refused_data-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a>;</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  <span class="comment">/* set pcb->refused_data to NULL in case the callback frees it and then</span></div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span> <span class="comment"> closes the pcb */</span></div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *refused_data = pcb->refused_data;</div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span> <span class="preprocessor">#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE</span></div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  pbuf_split_64k(refused_data, &rest);</div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  pcb->refused_data = rest;</div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span> <span class="preprocessor">#else </span><span class="comment">/* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  pcb->refused_data = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  <span class="comment">/* Notify again application with data previously received. */</span></div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#af51dc2563536de56470146749f715ba8">TCP_INPUT_DEBUG</a>, (<span class="stringliteral">"tcp_input: notify kept packet\n"</span>));</div>
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  TCP_EVENT_RECV(pcb, refused_data, <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>, err);</div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  <span class="comment">/* did refused_data include a FIN? */</span></div>
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  <span class="keywordflow">if</span> (refused_flags & <a class="code" href="pbuf_8h.html#a36a915aa2f6a188baa2862881407971e">PBUF_FLAG_TCP_FIN</a></div>
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#a89ffd0d7d1529bdb26bfbad267d0ad75">TCP_QUEUE_OOSEQ</a> && <a class="code" href="lwipopts_8h.html#a88dbbfeeeb41b129fdc8235fc08bb530">LWIP_WND_SCALE</a></div>
<div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  && (rest == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)</div>
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span> #endif <span class="comment">/* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */</span></div>
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>  ) {</div>
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>  <span class="comment">/* correct rcv_wnd as the application won't call tcp_recved()</span></div>
<div class="line"><a name="l01340"></a><span class="lineno"> 1340</span> <span class="comment"> for the FIN's seqno */</span></div>
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  <span class="keywordflow">if</span> (pcb->rcv_wnd != TCP_WND_MAX(pcb)) {</div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  pcb->rcv_wnd++;</div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  }</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  TCP_EVENT_CLOSED(pcb, err);</div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>) {</div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>;</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  }</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>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>) {</div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  <span class="comment">/* if err == ERR_ABRT, 'pcb' is already deallocated */</span></div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="comment">/* Drop incoming packets because pcb is "full" (only if the incoming</span></div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span> <span class="comment"> segment contains data). */</span></div>
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#af51dc2563536de56470146749f715ba8">TCP_INPUT_DEBUG</a>, (<span class="stringliteral">"tcp_input: drop incoming packets, because pcb is \"full\"\n"</span>));</div>
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a>;</div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  <span class="comment">/* data is still refused, pbuf is still valid (go on for ACK-only packets) */</span></div>
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span> <span class="preprocessor">#if TCP_QUEUE_OOSEQ && LWIP_WND_SCALE</span></div>
<div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  <span class="keywordflow">if</span> (rest != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  <a class="code" href="group__pbuf.html#ga82429084fe29015509c9b4a072707cd4">pbuf_cat</a>(refused_data, rest);</div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  }</div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  pcb->refused_data = refused_data;</div>
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929">ERR_INPROGRESS</a>;</div>
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  }</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>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</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="l01374"></a><span class="lineno"> 1374</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span> tcp_segs_free(<span class="keyword">struct</span> tcp_seg *seg)</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">while</span> (seg != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  <span class="keyword">struct </span>tcp_seg *next = seg->next;</div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  tcp_seg_free(seg);</div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  seg = next;</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="l01389"></a><span class="lineno"> 1389</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span> tcp_seg_free(<span class="keyword">struct</span> tcp_seg *seg)</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>  <span class="keywordflow">if</span> (seg != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  <span class="keywordflow">if</span> (seg->p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(seg->p);</div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span> <span class="preprocessor">#if TCP_DEBUG</span></div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  seg->p = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  }</div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_TCP_SEG, seg);</div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  }</div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span> }</div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  </div>
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span> tcp_setprio(<span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> prio)</div>
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span> {</div>
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  pcb->prio = prio;</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="preprocessor">#if TCP_QUEUE_OOSEQ</span></div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  </div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span> <span class="keyword">struct </span>tcp_seg *</div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span> tcp_seg_copy(<span class="keyword">struct</span> tcp_seg *seg)</div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span> {</div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  <span class="keyword">struct </span>tcp_seg *cseg;</div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  </div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  cseg = (<span class="keyword">struct </span>tcp_seg *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_SEG);</div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  <span class="keywordflow">if</span> (cseg == <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="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  }</div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  <a class="code" href="lwipopts_8h.html#a8c6e3c1e4f74acb16376188dbf8909ec">SMEMCPY</a>((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)cseg, (<span class="keyword">const</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)seg, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tcp_seg));</div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  <a class="code" href="group__pbuf.html#ga77f6bbd69e45e542014d9c547c7da74e">pbuf_ref</a>(cseg->p);</div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  <span class="keywordflow">return</span> cseg;</div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span> }</div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  </div>
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  </div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span> tcp_recv_null(<span class="keywordtype">void</span> *arg, <span class="keyword">struct</span> tcp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err)</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>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(arg);</div>
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  <span class="keywordflow">if</span> (p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  tcp_recved(pcb, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>);</div>
<div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  <span class="keywordflow">return</span> tcp_close(pcb);</div>
<div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  }</div>
<div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01454"></a><span class="lineno"> 1454</span> }</div>
<div class="line"><a name="l01455"></a><span class="lineno"> 1455</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  </div>
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span> tcp_kill_prio(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> prio)</div>
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span> {</div>
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <span class="keyword">struct </span>tcp_pcb *pcb, *inactive;</div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> inactivity;</div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> mprio;</div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  </div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  mprio = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(TCP_PRIO_MAX, prio);</div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  </div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  <span class="comment">/* We kill the oldest active connection that has lower priority than prio. */</span></div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  inactivity = 0;</div>
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  inactive = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  <span class="keywordflow">for</span> (pcb = tcp_active_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  <span class="keywordflow">if</span> (pcb->prio <= mprio &&</div>
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  (<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) >= inactivity) {</div>
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  inactivity = tcp_ticks - pcb->tmr;</div>
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  inactive = pcb;</div>
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  mprio = pcb->prio;</div>
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</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="keywordflow">if</span> (inactive != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_kill_prio: killing oldest PCB %p (%"</span><a class="code" href="group__compiler__abstraction.html#ga4b1eca99bc81e248c7074ea87fc9ca63">S32_F</a><span class="stringliteral">")\n"</span>,</div>
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  (<span class="keywordtype">void</span> *)inactive, inactivity));</div>
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  tcp_abort(inactive);</div>
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  }</div>
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span> }</div>
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  </div>
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span> tcp_kill_state(<span class="keyword">enum</span> tcp_state state)</div>
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span> {</div>
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  <span class="keyword">struct </span>tcp_pcb *pcb, *inactive;</div>
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> inactivity;</div>
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  </div>
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid state"</span>, (state == CLOSING) || (state == LAST_ACK));</div>
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  </div>
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  inactivity = 0;</div>
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  inactive = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  <span class="comment">/* Go through the list of active pcbs and get the oldest pcb that is in state</span></div>
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span> <span class="comment"> CLOSING/LAST_ACK. */</span></div>
<div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>  <span class="keywordflow">for</span> (pcb = tcp_active_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  <span class="keywordflow">if</span> (pcb->state == state) {</div>
<div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) >= inactivity) {</div>
<div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  inactivity = tcp_ticks - pcb->tmr;</div>
<div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  inactive = pcb;</div>
<div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  }</div>
<div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  }</div>
<div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  }</div>
<div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>  <span class="keywordflow">if</span> (inactive != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_kill_closing: killing oldest %s PCB %p (%"</span><a class="code" href="group__compiler__abstraction.html#ga4b1eca99bc81e248c7074ea87fc9ca63">S32_F</a><span class="stringliteral">")\n"</span>,</div>
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  tcp_state_str[state], (<span class="keywordtype">void</span> *)inactive, inactivity));</div>
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  <span class="comment">/* Don't send a RST, since no data is lost. */</span></div>
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  tcp_abandon(inactive, 0);</div>
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  }</div>
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span> }</div>
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  </div>
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span> tcp_kill_timewait(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span> {</div>
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  <span class="keyword">struct </span>tcp_pcb *pcb, *inactive;</div>
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> inactivity;</div>
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  </div>
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  inactivity = 0;</div>
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  inactive = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  <span class="comment">/* Go through the list of TIME_WAIT pcbs and get the oldest pcb. */</span></div>
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  <span class="keywordflow">for</span> (pcb = tcp_tw_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a>)(tcp_ticks - pcb->tmr) >= inactivity) {</div>
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  inactivity = tcp_ticks - pcb->tmr;</div>
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  inactive = pcb;</div>
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  }</div>
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  }</div>
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  <span class="keywordflow">if</span> (inactive != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_kill_timewait: killing oldest TIME-WAIT PCB %p (%"</span><a class="code" href="group__compiler__abstraction.html#ga4b1eca99bc81e248c7074ea87fc9ca63">S32_F</a><span class="stringliteral">")\n"</span>,</div>
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  (<span class="keywordtype">void</span> *)inactive, inactivity));</div>
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  tcp_abort(inactive);</div>
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  }</div>
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span> }</div>
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  </div>
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span> <span class="keyword">struct </span>tcp_pcb *</div>
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span> tcp_alloc(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> prio)</div>
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span> {</div>
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  </div>
<div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  pcb = (<span class="keyword">struct </span>tcp_pcb *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_PCB);</div>
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  <span class="keywordflow">if</span> (pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  <span class="comment">/* Try killing oldest connection in TIME-WAIT. */</span></div>
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_alloc: killing off oldest TIME-WAIT connection\n"</span>));</div>
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  tcp_kill_timewait();</div>
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  <span class="comment">/* Try to allocate a tcp_pcb again. */</span></div>
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  pcb = (<span class="keyword">struct </span>tcp_pcb *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_PCB);</div>
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  <span class="keywordflow">if</span> (pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  <span class="comment">/* Try killing oldest connection in LAST-ACK (these wouldn't go to TIME-WAIT). */</span></div>
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_alloc: killing off oldest LAST-ACK connection\n"</span>));</div>
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  tcp_kill_state(LAST_ACK);</div>
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  <span class="comment">/* Try to allocate a tcp_pcb again. */</span></div>
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>  pcb = (<span class="keyword">struct </span>tcp_pcb *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_PCB);</div>
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  <span class="keywordflow">if</span> (pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  <span class="comment">/* Try killing oldest connection in CLOSING. */</span></div>
<div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_alloc: killing off oldest CLOSING connection\n"</span>));</div>
<div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  tcp_kill_state(CLOSING);</div>
<div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>  <span class="comment">/* Try to allocate a tcp_pcb again. */</span></div>
<div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  pcb = (<span class="keyword">struct </span>tcp_pcb *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_PCB);</div>
<div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  <span class="keywordflow">if</span> (pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  <span class="comment">/* Try killing active connections with lower priority than the new one. */</span></div>
<div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_alloc: killing connection with prio lower than %d\n"</span>, prio));</div>
<div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  tcp_kill_prio(prio);</div>
<div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  <span class="comment">/* Try to allocate a tcp_pcb again. */</span></div>
<div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  pcb = (<span class="keyword">struct </span>tcp_pcb *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_TCP_PCB);</div>
<div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>  <span class="comment">/* adjust err stats: memp_malloc failed multiple times before */</span></div>
<div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  <a class="code" href="stats_8h.html#acdadac8ecdb9710b2cbd0a0dc4a9d4c1">MEMP_STATS_DEC</a>(err, MEMP_TCP_PCB);</div>
<div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>  }</div>
<div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  }</div>
<div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>  <span class="comment">/* adjust err stats: memp_malloc failed multiple times before */</span></div>
<div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  <a class="code" href="stats_8h.html#acdadac8ecdb9710b2cbd0a0dc4a9d4c1">MEMP_STATS_DEC</a>(err, MEMP_TCP_PCB);</div>
<div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>  }</div>
<div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  }</div>
<div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>  <span class="comment">/* adjust err stats: memp_malloc failed multiple times before */</span></div>
<div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  <a class="code" href="stats_8h.html#acdadac8ecdb9710b2cbd0a0dc4a9d4c1">MEMP_STATS_DEC</a>(err, MEMP_TCP_PCB);</div>
<div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  }</div>
<div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>  }</div>
<div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>  <span class="comment">/* adjust err stats: memp_malloc failed above */</span></div>
<div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  <a class="code" href="stats_8h.html#acdadac8ecdb9710b2cbd0a0dc4a9d4c1">MEMP_STATS_DEC</a>(err, MEMP_TCP_PCB);</div>
<div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  }</div>
<div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  }</div>
<div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  <span class="comment">/* zero out the whole pcb, so there is no need to initialize members to zero */</span></div>
<div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  <a class="code" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a>(pcb, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tcp_pcb));</div>
<div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>  pcb->prio = prio;</div>
<div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  pcb->snd_buf = <a class="code" href="lwipopts_8h.html#a871d111968d8c6c7880ff36b93c5c4dd">TCP_SND_BUF</a>;</div>
<div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  <span class="comment">/* Start with a window that does not need scaling. When window scaling is</span></div>
<div class="line"><a name="l01610"></a><span class="lineno"> 1610</span> <span class="comment"> enabled and used, the window is enlarged when both sides agree on scaling. */</span></div>
<div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  pcb->rcv_wnd = pcb->rcv_ann_wnd = TCPWND_MIN16(<a class="code" href="lwipopts_8h.html#a7f535a6efb5cdf86c3210e35ece1d6a7">TCP_WND</a>);</div>
<div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  pcb->ttl = <a class="code" href="lwipopts_8h.html#acd5b25ea81d2894790d25da5393cdab4">TCP_TTL</a>;</div>
<div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  <span class="comment">/* As initial send MSS, we use TCP_MSS but limit it to 536.</span></div>
<div class="line"><a name="l01614"></a><span class="lineno"> 1614</span> <span class="comment"> The send MSS is updated when an MSS option is received. */</span></div>
<div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  pcb->mss = INITIAL_MSS;</div>
<div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  pcb->rto = 3000 / TCP_SLOW_INTERVAL;</div>
<div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  pcb->sv = 3000 / TCP_SLOW_INTERVAL;</div>
<div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>  pcb->rtime = -1;</div>
<div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  pcb->cwnd = 1;</div>
<div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>  pcb->tmr = tcp_ticks;</div>
<div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  pcb->last_timer = tcp_timer_ctr;</div>
<div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  </div>
<div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  <span class="comment">/* RFC 5681 recommends setting ssthresh abritrarily high and gives an example</span></div>
<div class="line"><a name="l01624"></a><span class="lineno"> 1624</span> <span class="comment"> of using the largest advertised receive window. We've seen complications with</span></div>
<div class="line"><a name="l01625"></a><span class="lineno"> 1625</span> <span class="comment"> receiving TCPs that use window scaling and/or window auto-tuning where the</span></div>
<div class="line"><a name="l01626"></a><span class="lineno"> 1626</span> <span class="comment"> initial advertised window is very small and then grows rapidly once the</span></div>
<div class="line"><a name="l01627"></a><span class="lineno"> 1627</span> <span class="comment"> connection is established. To avoid these complications, we set ssthresh to the</span></div>
<div class="line"><a name="l01628"></a><span class="lineno"> 1628</span> <span class="comment"> largest effective cwnd (amount of in-flight data) that the sender can have. */</span></div>
<div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>  pcb->ssthresh = <a class="code" href="lwipopts_8h.html#a871d111968d8c6c7880ff36b93c5c4dd">TCP_SND_BUF</a>;</div>
<div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>  </div>
<div class="line"><a name="l01631"></a><span class="lineno"> 1631</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>  pcb->recv = tcp_recv_null;</div>
<div class="line"><a name="l01633"></a><span class="lineno"> 1633</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  </div>
<div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  <span class="comment">/* Init KEEPALIVE timer */</span></div>
<div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>  pcb->keep_idle = TCP_KEEPIDLE_DEFAULT;</div>
<div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>  </div>
<div class="line"><a name="l01638"></a><span class="lineno"> 1638</span> <span class="preprocessor">#if LWIP_TCP_KEEPALIVE</span></div>
<div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>  pcb->keep_intvl = TCP_KEEPINTVL_DEFAULT;</div>
<div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>  pcb->keep_cnt = TCP_KEEPCNT_DEFAULT;</div>
<div class="line"><a name="l01641"></a><span class="lineno"> 1641</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_TCP_KEEPALIVE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>  }</div>
<div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>  <span class="keywordflow">return</span> pcb;</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>  </div>
<div class="line"><a name="l01659"></a><span class="lineno"> 1659</span> <span class="keyword">struct </span>tcp_pcb *</div>
<div class="line"><a name="l01660"></a><span class="lineno"> 1660</span> tcp_new(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l01661"></a><span class="lineno"> 1661</span> {</div>
<div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>  <span class="keywordflow">return</span> tcp_alloc(TCP_PRIO_NORMAL);</div>
<div class="line"><a name="l01663"></a><span class="lineno"> 1663</span> }</div>
<div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>  </div>
<div class="line"><a name="l01676"></a><span class="lineno"> 1676</span> <span class="keyword">struct </span>tcp_pcb *</div>
<div class="line"><a name="l01677"></a><span class="lineno"> 1677</span> tcp_new_ip_type(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> type)</div>
<div class="line"><a name="l01678"></a><span class="lineno"> 1678</span> {</div>
<div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>  <span class="keyword">struct </span>tcp_pcb * pcb;</div>
<div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>  pcb = tcp_alloc(TCP_PRIO_NORMAL);</div>
<div class="line"><a name="l01681"></a><span class="lineno"> 1681</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>  <a class="code" href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a>(pcb->local_ip, type);</div>
<div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>  <a class="code" href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a>(pcb->remote_ip, type);</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> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(type);</div>
<div class="line"><a name="l01688"></a><span class="lineno"> 1688</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>  <span class="keywordflow">return</span> pcb;</div>
<div class="line"><a name="l01690"></a><span class="lineno"> 1690</span> }</div>
<div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>  </div>
<div class="line"><a name="l01700"></a><span class="lineno"> 1700</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01701"></a><span class="lineno"> 1701</span> tcp_arg(<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keywordtype">void</span> *arg)</div>
<div class="line"><a name="l01702"></a><span class="lineno"> 1702</span> {</div>
<div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>  <span class="comment">/* This function is allowed to be called for both listen pcbs and</span></div>
<div class="line"><a name="l01704"></a><span class="lineno"> 1704</span> <span class="comment"> connection pcbs. */</span></div>
<div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>  pcb->callback_arg = arg;</div>
<div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>  }</div>
<div class="line"><a name="l01708"></a><span class="lineno"> 1708</span> }</div>
<div class="line"><a name="l01709"></a><span class="lineno"> 1709</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>  </div>
<div class="line"><a name="l01719"></a><span class="lineno"> 1719</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01720"></a><span class="lineno"> 1720</span> tcp_recv(<span class="keyword">struct</span> tcp_pcb *pcb, tcp_recv_fn recv)</div>
<div class="line"><a name="l01721"></a><span class="lineno"> 1721</span> {</div>
<div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid socket state for recv callback"</span>, pcb->state != LISTEN);</div>
<div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>  pcb->recv = recv;</div>
<div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>  }</div>
<div class="line"><a name="l01726"></a><span class="lineno"> 1726</span> }</div>
<div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>  </div>
<div class="line"><a name="l01736"></a><span class="lineno"> 1736</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01737"></a><span class="lineno"> 1737</span> tcp_sent(<span class="keyword">struct</span> tcp_pcb *pcb, tcp_sent_fn sent)</div>
<div class="line"><a name="l01738"></a><span class="lineno"> 1738</span> {</div>
<div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid socket state for sent callback"</span>, pcb->state != LISTEN);</div>
<div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>  pcb->sent = sent;</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>  </div>
<div class="line"><a name="l01756"></a><span class="lineno"> 1756</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01757"></a><span class="lineno"> 1757</span> tcp_err(<span class="keyword">struct</span> tcp_pcb *pcb, tcp_err_fn err)</div>
<div class="line"><a name="l01758"></a><span class="lineno"> 1758</span> {</div>
<div class="line"><a name="l01759"></a><span class="lineno"> 1759</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01760"></a><span class="lineno"> 1760</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid socket state for err callback"</span>, pcb->state != LISTEN);</div>
<div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>  pcb->errf = err;</div>
<div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>  }</div>
<div class="line"><a name="l01763"></a><span class="lineno"> 1763</span> }</div>
<div class="line"><a name="l01764"></a><span class="lineno"> 1764</span>  </div>
<div class="line"><a name="l01774"></a><span class="lineno"> 1774</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01775"></a><span class="lineno"> 1775</span> tcp_accept(<span class="keyword">struct</span> tcp_pcb *pcb, tcp_accept_fn accept)</div>
<div class="line"><a name="l01776"></a><span class="lineno"> 1776</span> {</div>
<div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>  <span class="keywordflow">if</span> ((pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (pcb->state == LISTEN)) {</div>
<div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>  <span class="keyword">struct </span>tcp_pcb_listen *lpcb = (<span class="keyword">struct </span>tcp_pcb_listen*)pcb;</div>
<div class="line"><a name="l01779"></a><span class="lineno"> 1779</span>  lpcb->accept = accept;</div>
<div class="line"><a name="l01780"></a><span class="lineno"> 1780</span>  }</div>
<div class="line"><a name="l01781"></a><span class="lineno"> 1781</span> }</div>
<div class="line"><a name="l01782"></a><span class="lineno"> 1782</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01783"></a><span class="lineno"> 1783</span>  </div>
<div class="line"><a name="l01784"></a><span class="lineno"> 1784</span>  </div>
<div class="line"><a name="l01792"></a><span class="lineno"> 1792</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01793"></a><span class="lineno"> 1793</span> tcp_poll(<span class="keyword">struct</span> tcp_pcb *pcb, tcp_poll_fn poll, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> interval)</div>
<div class="line"><a name="l01794"></a><span class="lineno"> 1794</span> {</div>
<div class="line"><a name="l01795"></a><span class="lineno"> 1795</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid socket state for poll"</span>, pcb->state != LISTEN);</div>
<div class="line"><a name="l01796"></a><span class="lineno"> 1796</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l01797"></a><span class="lineno"> 1797</span>  pcb->poll = poll;</div>
<div class="line"><a name="l01798"></a><span class="lineno"> 1798</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01799"></a><span class="lineno"> 1799</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(poll);</div>
<div class="line"><a name="l01800"></a><span class="lineno"> 1800</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01801"></a><span class="lineno"> 1801</span>  pcb->pollinterval = interval;</div>
<div class="line"><a name="l01802"></a><span class="lineno"> 1802</span> }</div>
<div class="line"><a name="l01803"></a><span class="lineno"> 1803</span>  </div>
<div class="line"><a name="l01810"></a><span class="lineno"> 1810</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01811"></a><span class="lineno"> 1811</span> tcp_pcb_purge(<span class="keyword">struct</span> tcp_pcb *pcb)</div>
<div class="line"><a name="l01812"></a><span class="lineno"> 1812</span> {</div>
<div class="line"><a name="l01813"></a><span class="lineno"> 1813</span>  <span class="keywordflow">if</span> (pcb->state != CLOSED &&</div>
<div class="line"><a name="l01814"></a><span class="lineno"> 1814</span>  pcb->state != TIME_WAIT &&</div>
<div class="line"><a name="l01815"></a><span class="lineno"> 1815</span>  pcb->state != LISTEN) {</div>
<div class="line"><a name="l01816"></a><span class="lineno"> 1816</span>  </div>
<div class="line"><a name="l01817"></a><span class="lineno"> 1817</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_pcb_purge\n"</span>));</div>
<div class="line"><a name="l01818"></a><span class="lineno"> 1818</span>  </div>
<div class="line"><a name="l01819"></a><span class="lineno"> 1819</span>  tcp_backlog_accepted(pcb);</div>
<div class="line"><a name="l01820"></a><span class="lineno"> 1820</span>  </div>
<div class="line"><a name="l01821"></a><span class="lineno"> 1821</span>  <span class="keywordflow">if</span> (pcb->refused_data != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01822"></a><span class="lineno"> 1822</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_pcb_purge: data left on ->refused_data\n"</span>));</div>
<div class="line"><a name="l01823"></a><span class="lineno"> 1823</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(pcb->refused_data);</div>
<div class="line"><a name="l01824"></a><span class="lineno"> 1824</span>  pcb->refused_data = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01825"></a><span class="lineno"> 1825</span>  }</div>
<div class="line"><a name="l01826"></a><span class="lineno"> 1826</span>  <span class="keywordflow">if</span> (pcb->unsent != <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#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_pcb_purge: not all data sent\n"</span>));</div>
<div class="line"><a name="l01828"></a><span class="lineno"> 1828</span>  }</div>
<div class="line"><a name="l01829"></a><span class="lineno"> 1829</span>  <span class="keywordflow">if</span> (pcb->unacked != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01830"></a><span class="lineno"> 1830</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_pcb_purge: data left on ->unacked\n"</span>));</div>
<div class="line"><a name="l01831"></a><span class="lineno"> 1831</span>  }</div>
<div class="line"><a name="l01832"></a><span class="lineno"> 1832</span> <span class="preprocessor">#if TCP_QUEUE_OOSEQ</span></div>
<div class="line"><a name="l01833"></a><span class="lineno"> 1833</span>  <span class="keywordflow">if</span> (pcb->ooseq != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01834"></a><span class="lineno"> 1834</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"tcp_pcb_purge: data left on ->ooseq\n"</span>));</div>
<div class="line"><a name="l01835"></a><span class="lineno"> 1835</span>  }</div>
<div class="line"><a name="l01836"></a><span class="lineno"> 1836</span>  tcp_segs_free(pcb->ooseq);</div>
<div class="line"><a name="l01837"></a><span class="lineno"> 1837</span>  pcb->ooseq = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01838"></a><span class="lineno"> 1838</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01839"></a><span class="lineno"> 1839</span>  </div>
<div class="line"><a name="l01840"></a><span class="lineno"> 1840</span>  <span class="comment">/* Stop the retransmission timer as it will expect data on unacked</span></div>
<div class="line"><a name="l01841"></a><span class="lineno"> 1841</span> <span class="comment"> queue if it fires */</span></div>
<div class="line"><a name="l01842"></a><span class="lineno"> 1842</span>  pcb->rtime = -1;</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>  tcp_segs_free(pcb->unsent);</div>
<div class="line"><a name="l01845"></a><span class="lineno"> 1845</span>  tcp_segs_free(pcb->unacked);</div>
<div class="line"><a name="l01846"></a><span class="lineno"> 1846</span>  pcb->unacked = pcb->unsent = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01847"></a><span class="lineno"> 1847</span> <span class="preprocessor">#if TCP_OVERSIZE</span></div>
<div class="line"><a name="l01848"></a><span class="lineno"> 1848</span>  pcb->unsent_oversize = 0;</div>
<div class="line"><a name="l01849"></a><span class="lineno"> 1849</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_OVERSIZE */</span><span class="preprocessor"></span></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> }</div>
<div class="line"><a name="l01852"></a><span class="lineno"> 1852</span>  </div>
<div class="line"><a name="l01859"></a><span class="lineno"> 1859</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01860"></a><span class="lineno"> 1860</span> tcp_pcb_remove(<span class="keyword">struct</span> tcp_pcb **pcblist, <span class="keyword">struct</span> tcp_pcb *pcb)</div>
<div class="line"><a name="l01861"></a><span class="lineno"> 1861</span> {</div>
<div class="line"><a name="l01862"></a><span class="lineno"> 1862</span>  TCP_RMV(pcblist, pcb);</div>
<div class="line"><a name="l01863"></a><span class="lineno"> 1863</span>  </div>
<div class="line"><a name="l01864"></a><span class="lineno"> 1864</span>  tcp_pcb_purge(pcb);</div>
<div class="line"><a name="l01865"></a><span class="lineno"> 1865</span>  </div>
<div class="line"><a name="l01866"></a><span class="lineno"> 1866</span>  <span class="comment">/* if there is an outstanding delayed ACKs, send it */</span></div>
<div class="line"><a name="l01867"></a><span class="lineno"> 1867</span>  <span class="keywordflow">if</span> (pcb->state != TIME_WAIT &&</div>
<div class="line"><a name="l01868"></a><span class="lineno"> 1868</span>  pcb->state != LISTEN &&</div>
<div class="line"><a name="l01869"></a><span class="lineno"> 1869</span>  pcb->flags & TF_ACK_DELAY) {</div>
<div class="line"><a name="l01870"></a><span class="lineno"> 1870</span>  pcb->flags |= TF_ACK_NOW;</div>
<div class="line"><a name="l01871"></a><span class="lineno"> 1871</span>  tcp_output(pcb);</div>
<div class="line"><a name="l01872"></a><span class="lineno"> 1872</span>  }</div>
<div class="line"><a name="l01873"></a><span class="lineno"> 1873</span>  </div>
<div class="line"><a name="l01874"></a><span class="lineno"> 1874</span>  <span class="keywordflow">if</span> (pcb->state != LISTEN) {</div>
<div class="line"><a name="l01875"></a><span class="lineno"> 1875</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"unsent segments leaking"</span>, pcb->unsent == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01876"></a><span class="lineno"> 1876</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"unacked segments leaking"</span>, pcb->unacked == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01877"></a><span class="lineno"> 1877</span> <span class="preprocessor">#if TCP_QUEUE_OOSEQ</span></div>
<div class="line"><a name="l01878"></a><span class="lineno"> 1878</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"ooseq segments leaking"</span>, pcb->ooseq == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01879"></a><span class="lineno"> 1879</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_QUEUE_OOSEQ */</span><span class="preprocessor"></span></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>  </div>
<div class="line"><a name="l01882"></a><span class="lineno"> 1882</span>  pcb->state = CLOSED;</div>
<div class="line"><a name="l01883"></a><span class="lineno"> 1883</span>  <span class="comment">/* reset the local port to prevent the pcb from being 'bound' */</span></div>
<div class="line"><a name="l01884"></a><span class="lineno"> 1884</span>  pcb->local_port = 0;</div>
<div class="line"><a name="l01885"></a><span class="lineno"> 1885</span>  </div>
<div class="line"><a name="l01886"></a><span class="lineno"> 1886</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_pcb_remove: tcp_pcbs_sane()"</span>, tcp_pcbs_sane());</div>
<div class="line"><a name="l01887"></a><span class="lineno"> 1887</span> }</div>
<div class="line"><a name="l01888"></a><span class="lineno"> 1888</span>  </div>
<div class="line"><a name="l01894"></a><span class="lineno"> 1894</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a></div>
<div class="line"><a name="l01895"></a><span class="lineno"> 1895</span> tcp_next_iss(<span class="keyword">struct</span> tcp_pcb *pcb)</div>
<div class="line"><a name="l01896"></a><span class="lineno"> 1896</span> {</div>
<div class="line"><a name="l01897"></a><span class="lineno"> 1897</span> <span class="preprocessor">#ifdef LWIP_HOOK_TCP_ISN</span></div>
<div class="line"><a name="l01898"></a><span class="lineno"> 1898</span>  <span class="keywordflow">return</span> LWIP_HOOK_TCP_ISN(&pcb->local_ip, pcb->local_port, &pcb->remote_ip, pcb->remote_port);</div>
<div class="line"><a name="l01899"></a><span class="lineno"> 1899</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_HOOK_TCP_ISN */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01900"></a><span class="lineno"> 1900</span>  <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> iss = 6510;</div>
<div class="line"><a name="l01901"></a><span class="lineno"> 1901</span>  </div>
<div class="line"><a name="l01902"></a><span class="lineno"> 1902</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(pcb);</div>
<div class="line"><a name="l01903"></a><span class="lineno"> 1903</span>  </div>
<div class="line"><a name="l01904"></a><span class="lineno"> 1904</span>  iss += tcp_ticks; <span class="comment">/* XXX */</span></div>
<div class="line"><a name="l01905"></a><span class="lineno"> 1905</span>  <span class="keywordflow">return</span> iss;</div>
<div class="line"><a name="l01906"></a><span class="lineno"> 1906</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_HOOK_TCP_ISN */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01907"></a><span class="lineno"> 1907</span> }</div>
<div class="line"><a name="l01908"></a><span class="lineno"> 1908</span>  </div>
<div class="line"><a name="l01909"></a><span class="lineno"> 1909</span> <span class="preprocessor">#if TCP_CALCULATE_EFF_SEND_MSS</span></div>
<div class="line"><a name="l01910"></a><span class="lineno"> 1910</span>  </div>
<div class="line"><a name="l01915"></a><span class="lineno"> 1915</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l01916"></a><span class="lineno"> 1916</span> tcp_eff_send_mss_impl(<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> sendmss, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dest</div>
<div class="line"><a name="l01917"></a><span class="lineno"> 1917</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#a872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a> || LWIP_IPV4_SRC_ROUTING</div>
<div class="line"><a name="l01918"></a><span class="lineno"> 1918</span>  , <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *src</div>
<div class="line"><a name="l01919"></a><span class="lineno"> 1919</span> #endif <span class="comment">/* LWIP_IPV6 || LWIP_IPV4_SRC_ROUTING */</span></div>
<div class="line"><a name="l01920"></a><span class="lineno"> 1920</span>  )</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="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> mss_s;</div>
<div class="line"><a name="l01923"></a><span class="lineno"> 1923</span>  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *outif;</div>
<div class="line"><a name="l01924"></a><span class="lineno"> 1924</span>  <a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> <a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a>;</div>
<div class="line"><a name="l01925"></a><span class="lineno"> 1925</span>  </div>
<div class="line"><a name="l01926"></a><span class="lineno"> 1926</span>  outif = ip_route(src, dest);</div>
<div class="line"><a name="l01927"></a><span class="lineno"> 1927</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l01928"></a><span class="lineno"> 1928</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01929"></a><span class="lineno"> 1929</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(dest))</div>
<div class="line"><a name="l01930"></a><span class="lineno"> 1930</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></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>  <span class="comment">/* First look in destination cache, to see if there is a Path MTU. */</span></div>
<div class="line"><a name="l01933"></a><span class="lineno"> 1933</span>  <a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> = nd6_get_destination_mtu(<a class="code" href="ip__addr_8h.html#a06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(dest), outif);</div>
<div class="line"><a name="l01934"></a><span class="lineno"> 1934</span>  }</div>
<div class="line"><a name="l01935"></a><span class="lineno"> 1935</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01936"></a><span class="lineno"> 1936</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l01937"></a><span class="lineno"> 1937</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01938"></a><span class="lineno"> 1938</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01939"></a><span class="lineno"> 1939</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01940"></a><span class="lineno"> 1940</span>  {</div>
<div class="line"><a name="l01941"></a><span class="lineno"> 1941</span>  <span class="keywordflow">if</span> (outif == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01942"></a><span class="lineno"> 1942</span>  <span class="keywordflow">return</span> sendmss;</div>
<div class="line"><a name="l01943"></a><span class="lineno"> 1943</span>  }</div>
<div class="line"><a name="l01944"></a><span class="lineno"> 1944</span>  <a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> = outif-><a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a>;</div>
<div class="line"><a name="l01945"></a><span class="lineno"> 1945</span>  }</div>
<div class="line"><a name="l01946"></a><span class="lineno"> 1946</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></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">if</span> (<a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> != 0) {</div>
<div class="line"><a name="l01949"></a><span class="lineno"> 1949</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l01950"></a><span class="lineno"> 1950</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01951"></a><span class="lineno"> 1951</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(dest))</div>
<div class="line"><a name="l01952"></a><span class="lineno"> 1952</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01953"></a><span class="lineno"> 1953</span>  {</div>
<div class="line"><a name="l01954"></a><span class="lineno"> 1954</span>  mss_s = <a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> - <a class="code" href="prot_2ip6_8h.html#afb4c1dc527be76d8f27591dfb726c023">IP6_HLEN</a> - <a class="code" href="prot_2tcp_8h.html#a5758db371d6daa394d178429b7c94c2a">TCP_HLEN</a>;</div>
<div class="line"><a name="l01955"></a><span class="lineno"> 1955</span>  }</div>
<div class="line"><a name="l01956"></a><span class="lineno"> 1956</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01957"></a><span class="lineno"> 1957</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l01958"></a><span class="lineno"> 1958</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01959"></a><span class="lineno"> 1959</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01960"></a><span class="lineno"> 1960</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01961"></a><span class="lineno"> 1961</span>  {</div>
<div class="line"><a name="l01962"></a><span class="lineno"> 1962</span>  mss_s = <a class="code" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> - <a class="code" href="prot_2ip4_8h.html#ad76777d4d34f33ab5f715f9ca15503c3">IP_HLEN</a> - <a class="code" href="prot_2tcp_8h.html#a5758db371d6daa394d178429b7c94c2a">TCP_HLEN</a>;</div>
<div class="line"><a name="l01963"></a><span class="lineno"> 1963</span>  }</div>
<div class="line"><a name="l01964"></a><span class="lineno"> 1964</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01965"></a><span class="lineno"> 1965</span>  <span class="comment">/* RFC 1122, chap 4.2.2.6:</span></div>
<div class="line"><a name="l01966"></a><span class="lineno"> 1966</span> <span class="comment"> * Eff.snd.MSS = min(SendMSS+20, MMS_S) - TCPhdrsize - IPoptionsize</span></div>
<div class="line"><a name="l01967"></a><span class="lineno"> 1967</span> <span class="comment"> * We correct for TCP options in tcp_write(), and don't support IP options.</span></div>
<div class="line"><a name="l01968"></a><span class="lineno"> 1968</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01969"></a><span class="lineno"> 1969</span>  sendmss = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(sendmss, mss_s);</div>
<div class="line"><a name="l01970"></a><span class="lineno"> 1970</span>  }</div>
<div class="line"><a name="l01971"></a><span class="lineno"> 1971</span>  <span class="keywordflow">return</span> sendmss;</div>
<div class="line"><a name="l01972"></a><span class="lineno"> 1972</span> }</div>
<div class="line"><a name="l01973"></a><span class="lineno"> 1973</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_CALCULATE_EFF_SEND_MSS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01974"></a><span class="lineno"> 1974</span>  </div>
<div class="line"><a name="l01976"></a><span class="lineno"> 1976</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01977"></a><span class="lineno"> 1977</span> tcp_netif_ip_addr_changed_pcblist(<span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* old_addr, <span class="keyword">struct</span> tcp_pcb* pcb_list)</div>
<div class="line"><a name="l01978"></a><span class="lineno"> 1978</span> {</div>
<div class="line"><a name="l01979"></a><span class="lineno"> 1979</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l01980"></a><span class="lineno"> 1980</span>  pcb = pcb_list;</div>
<div class="line"><a name="l01981"></a><span class="lineno"> 1981</span>  <span class="keywordflow">while</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01982"></a><span class="lineno"> 1982</span>  <span class="comment">/* PCB bound to current local interface address? */</span></div>
<div class="line"><a name="l01983"></a><span class="lineno"> 1983</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&pcb->local_ip, old_addr)</div>
<div class="line"><a name="l01984"></a><span class="lineno"> 1984</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#aaf1b3a089827223589baf1b7f4f57069">LWIP_AUTOIP</a></div>
<div class="line"><a name="l01985"></a><span class="lineno"> 1985</span>  <span class="comment">/* connections to link-local addresses must persist (RFC3927 ch. 1.9) */</span></div>
<div class="line"><a name="l01986"></a><span class="lineno"> 1986</span>  && (!<a class="code" href="ip__addr_8h.html#ab1a059f07bd9c50aa58447d963b823a1">IP_IS_V4_VAL</a>(pcb->local_ip) || !ip4_addr_islinklocal(ip_2_ip4(&pcb->local_ip)))</div>
<div class="line"><a name="l01987"></a><span class="lineno"> 1987</span> #endif <span class="comment">/* LWIP_AUTOIP */</span></div>
<div class="line"><a name="l01988"></a><span class="lineno"> 1988</span>  ) {</div>
<div class="line"><a name="l01989"></a><span class="lineno"> 1989</span>  <span class="comment">/* this connection must be aborted */</span></div>
<div class="line"><a name="l01990"></a><span class="lineno"> 1990</span>  <span class="keyword">struct </span>tcp_pcb *next = pcb->next;</div>
<div class="line"><a name="l01991"></a><span class="lineno"> 1991</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a2dfad02b075a7f9a8791a66fe40864a4">NETIF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"netif_set_ipaddr: aborting TCP pcb %p\n"</span>, (<span class="keywordtype">void</span> *)pcb));</div>
<div class="line"><a name="l01992"></a><span class="lineno"> 1992</span>  tcp_abort(pcb);</div>
<div class="line"><a name="l01993"></a><span class="lineno"> 1993</span>  pcb = next;</div>
<div class="line"><a name="l01994"></a><span class="lineno"> 1994</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01995"></a><span class="lineno"> 1995</span>  pcb = pcb->next;</div>
<div class="line"><a name="l01996"></a><span class="lineno"> 1996</span>  }</div>
<div class="line"><a name="l01997"></a><span class="lineno"> 1997</span>  }</div>
<div class="line"><a name="l01998"></a><span class="lineno"> 1998</span> }</div>
<div class="line"><a name="l01999"></a><span class="lineno"> 1999</span>  </div>
<div class="line"><a name="l02005"></a><span class="lineno"> 2005</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l02006"></a><span class="lineno"> 2006</span> tcp_netif_ip_addr_changed(<span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* old_addr, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* new_addr)</div>
<div class="line"><a name="l02007"></a><span class="lineno"> 2007</span> {</div>
<div class="line"><a name="l02008"></a><span class="lineno"> 2008</span>  <span class="keyword">struct </span>tcp_pcb_listen *lpcb, *next;</div>
<div class="line"><a name="l02009"></a><span class="lineno"> 2009</span>  </div>
<div class="line"><a name="l02010"></a><span class="lineno"> 2010</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(old_addr)) {</div>
<div class="line"><a name="l02011"></a><span class="lineno"> 2011</span>  tcp_netif_ip_addr_changed_pcblist(old_addr, tcp_active_pcbs);</div>
<div class="line"><a name="l02012"></a><span class="lineno"> 2012</span>  tcp_netif_ip_addr_changed_pcblist(old_addr, tcp_bound_pcbs);</div>
<div class="line"><a name="l02013"></a><span class="lineno"> 2013</span>  </div>
<div class="line"><a name="l02014"></a><span class="lineno"> 2014</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(new_addr)) {</div>
<div class="line"><a name="l02015"></a><span class="lineno"> 2015</span>  <span class="comment">/* PCB bound to current local interface address? */</span></div>
<div class="line"><a name="l02016"></a><span class="lineno"> 2016</span>  <span class="keywordflow">for</span> (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; lpcb = next) {</div>
<div class="line"><a name="l02017"></a><span class="lineno"> 2017</span>  next = lpcb->next;</div>
<div class="line"><a name="l02018"></a><span class="lineno"> 2018</span>  <span class="comment">/* PCB bound to current local interface address? */</span></div>
<div class="line"><a name="l02019"></a><span class="lineno"> 2019</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&lpcb->local_ip, old_addr)) {</div>
<div class="line"><a name="l02020"></a><span class="lineno"> 2020</span>  <span class="comment">/* The PCB is listening to the old ipaddr and</span></div>
<div class="line"><a name="l02021"></a><span class="lineno"> 2021</span> <span class="comment"> * is set to listen to the new one instead */</span></div>
<div class="line"><a name="l02022"></a><span class="lineno"> 2022</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(lpcb->local_ip, *new_addr);</div>
<div class="line"><a name="l02023"></a><span class="lineno"> 2023</span>  }</div>
<div class="line"><a name="l02024"></a><span class="lineno"> 2024</span>  }</div>
<div class="line"><a name="l02025"></a><span class="lineno"> 2025</span>  }</div>
<div class="line"><a name="l02026"></a><span class="lineno"> 2026</span>  }</div>
<div class="line"><a name="l02027"></a><span class="lineno"> 2027</span> }</div>
<div class="line"><a name="l02028"></a><span class="lineno"> 2028</span>  </div>
<div class="line"><a name="l02029"></a><span class="lineno"> 2029</span> <span class="keyword">const</span> <span class="keywordtype">char</span>*</div>
<div class="line"><a name="l02030"></a><span class="lineno"> 2030</span> tcp_debug_state_str(<span class="keyword">enum</span> tcp_state s)</div>
<div class="line"><a name="l02031"></a><span class="lineno"> 2031</span> {</div>
<div class="line"><a name="l02032"></a><span class="lineno"> 2032</span>  <span class="keywordflow">return</span> tcp_state_str[s];</div>
<div class="line"><a name="l02033"></a><span class="lineno"> 2033</span> }</div>
<div class="line"><a name="l02034"></a><span class="lineno"> 2034</span>  </div>
<div class="line"><a name="l02035"></a><span class="lineno"> 2035</span> <span class="preprocessor">#if TCP_DEBUG || TCP_INPUT_DEBUG || TCP_OUTPUT_DEBUG</span></div>
<div class="line"><a name="l02036"></a><span class="lineno"> 2036</span>  </div>
<div class="line"><a name="l02041"></a><span class="lineno"> 2041</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l02042"></a><span class="lineno"> 2042</span> tcp_debug_print(<span class="keyword">struct</span> <a class="code" href="structtcp__hdr.html">tcp_hdr</a> *tcphdr)</div>
<div class="line"><a name="l02043"></a><span class="lineno"> 2043</span> {</div>
<div class="line"><a name="l02044"></a><span class="lineno"> 2044</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"TCP header:\n"</span>));</div>
<div class="line"><a name="l02045"></a><span class="lineno"> 2045</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l02046"></a><span class="lineno"> 2046</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"| %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | (src port, dest port)\n"</span>,</div>
<div class="line"><a name="l02047"></a><span class="lineno"> 2047</span>  <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(tcphdr->src), <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(tcphdr->dest)));</div>
<div class="line"><a name="l02048"></a><span class="lineno"> 2048</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l02049"></a><span class="lineno"> 2049</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"| %010"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" | (seq no)\n"</span>,</div>
<div class="line"><a name="l02050"></a><span class="lineno"> 2050</span>  <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(tcphdr->seqno)));</div>
<div class="line"><a name="l02051"></a><span class="lineno"> 2051</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l02052"></a><span class="lineno"> 2052</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"| %010"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" | (ack no)\n"</span>,</div>
<div class="line"><a name="l02053"></a><span class="lineno"> 2053</span>  <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(tcphdr->ackno)));</div>
<div class="line"><a name="l02054"></a><span class="lineno"> 2054</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l02055"></a><span class="lineno"> 2055</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"| %2"</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">"%"</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">"| %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | (hdrlen, flags ("</span>,</div>
<div class="line"><a name="l02056"></a><span class="lineno"> 2056</span>  <a class="code" href="prot_2tcp_8h.html#a5b97d3b7e68c20eb3eab87a61d779223">TCPH_HDRLEN</a>(tcphdr),</div>
<div class="line"><a name="l02057"></a><span class="lineno"> 2057</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr) >> 5 & 1),</div>
<div class="line"><a name="l02058"></a><span class="lineno"> 2058</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr) >> 4 & 1),</div>
<div class="line"><a name="l02059"></a><span class="lineno"> 2059</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr) >> 3 & 1),</div>
<div class="line"><a name="l02060"></a><span class="lineno"> 2060</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr) >> 2 & 1),</div>
<div class="line"><a name="l02061"></a><span class="lineno"> 2061</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr) >> 1 & 1),</div>
<div class="line"><a name="l02062"></a><span class="lineno"> 2062</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr) & 1),</div>
<div class="line"><a name="l02063"></a><span class="lineno"> 2063</span>  <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(tcphdr->wnd)));</div>
<div class="line"><a name="l02064"></a><span class="lineno"> 2064</span>  tcp_debug_print_flags(<a class="code" href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a>(tcphdr));</div>
<div class="line"><a name="l02065"></a><span class="lineno"> 2065</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"), win)\n"</span>));</div>
<div class="line"><a name="l02066"></a><span class="lineno"> 2066</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l02067"></a><span class="lineno"> 2067</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"| 0x%04"</span><a class="code" href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a><span class="stringliteral">" | %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | (chksum, urgp)\n"</span>,</div>
<div class="line"><a name="l02068"></a><span class="lineno"> 2068</span>  <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(tcphdr->chksum), <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(tcphdr->urgp)));</div>
<div class="line"><a name="l02069"></a><span class="lineno"> 2069</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l02070"></a><span class="lineno"> 2070</span> }</div>
<div class="line"><a name="l02071"></a><span class="lineno"> 2071</span>  </div>
<div class="line"><a name="l02077"></a><span class="lineno"> 2077</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l02078"></a><span class="lineno"> 2078</span> tcp_debug_print_state(<span class="keyword">enum</span> tcp_state s)</div>
<div class="line"><a name="l02079"></a><span class="lineno"> 2079</span> {</div>
<div class="line"><a name="l02080"></a><span class="lineno"> 2080</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"State: %s\n"</span>, tcp_state_str[s]));</div>
<div class="line"><a name="l02081"></a><span class="lineno"> 2081</span> }</div>
<div class="line"><a name="l02082"></a><span class="lineno"> 2082</span>  </div>
<div class="line"><a name="l02088"></a><span class="lineno"> 2088</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l02089"></a><span class="lineno"> 2089</span> tcp_debug_print_flags(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> flags)</div>
<div class="line"><a name="l02090"></a><span class="lineno"> 2090</span> {</div>
<div class="line"><a name="l02091"></a><span class="lineno"> 2091</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#a88e60aa2cf23e1c65d630701db08c743">TCP_FIN</a>) {</div>
<div class="line"><a name="l02092"></a><span class="lineno"> 2092</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"FIN "</span>));</div>
<div class="line"><a name="l02093"></a><span class="lineno"> 2093</span>  }</div>
<div class="line"><a name="l02094"></a><span class="lineno"> 2094</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#a6020613f5062417d9811cfa837215c83">TCP_SYN</a>) {</div>
<div class="line"><a name="l02095"></a><span class="lineno"> 2095</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"SYN "</span>));</div>
<div class="line"><a name="l02096"></a><span class="lineno"> 2096</span>  }</div>
<div class="line"><a name="l02097"></a><span class="lineno"> 2097</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#a5ca559def464ef20d8b1f7d32f2f160d">TCP_RST</a>) {</div>
<div class="line"><a name="l02098"></a><span class="lineno"> 2098</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"RST "</span>));</div>
<div class="line"><a name="l02099"></a><span class="lineno"> 2099</span>  }</div>
<div class="line"><a name="l02100"></a><span class="lineno"> 2100</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#a1320fd0006a2f70138bc2d0018dda829">TCP_PSH</a>) {</div>
<div class="line"><a name="l02101"></a><span class="lineno"> 2101</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"PSH "</span>));</div>
<div class="line"><a name="l02102"></a><span class="lineno"> 2102</span>  }</div>
<div class="line"><a name="l02103"></a><span class="lineno"> 2103</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#a44b3b1ab31a403ba28ec135adfcbefef">TCP_ACK</a>) {</div>
<div class="line"><a name="l02104"></a><span class="lineno"> 2104</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"ACK "</span>));</div>
<div class="line"><a name="l02105"></a><span class="lineno"> 2105</span>  }</div>
<div class="line"><a name="l02106"></a><span class="lineno"> 2106</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#ac84f499cba8a02fc0e306c10b2acabf0">TCP_URG</a>) {</div>
<div class="line"><a name="l02107"></a><span class="lineno"> 2107</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"URG "</span>));</div>
<div class="line"><a name="l02108"></a><span class="lineno"> 2108</span>  }</div>
<div class="line"><a name="l02109"></a><span class="lineno"> 2109</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#ae6ba06711820fc4365ad0d78f70171dd">TCP_ECE</a>) {</div>
<div class="line"><a name="l02110"></a><span class="lineno"> 2110</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"ECE "</span>));</div>
<div class="line"><a name="l02111"></a><span class="lineno"> 2111</span>  }</div>
<div class="line"><a name="l02112"></a><span class="lineno"> 2112</span>  <span class="keywordflow">if</span> (flags & <a class="code" href="prot_2tcp_8h.html#a6f441228e74f83c026c48360667beb48">TCP_CWR</a>) {</div>
<div class="line"><a name="l02113"></a><span class="lineno"> 2113</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"CWR "</span>));</div>
<div class="line"><a name="l02114"></a><span class="lineno"> 2114</span>  }</div>
<div class="line"><a name="l02115"></a><span class="lineno"> 2115</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</div>
<div class="line"><a name="l02116"></a><span class="lineno"> 2116</span> }</div>
<div class="line"><a name="l02117"></a><span class="lineno"> 2117</span>  </div>
<div class="line"><a name="l02121"></a><span class="lineno"> 2121</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l02122"></a><span class="lineno"> 2122</span> tcp_debug_print_pcbs(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l02123"></a><span class="lineno"> 2123</span> {</div>
<div class="line"><a name="l02124"></a><span class="lineno"> 2124</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l02125"></a><span class="lineno"> 2125</span>  <span class="keyword">struct </span>tcp_pcb_listen *pcbl;</div>
<div class="line"><a name="l02126"></a><span class="lineno"> 2126</span>  </div>
<div class="line"><a name="l02127"></a><span class="lineno"> 2127</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"Active PCB states:\n"</span>));</div>
<div class="line"><a name="l02128"></a><span class="lineno"> 2128</span>  <span class="keywordflow">for</span> (pcb = tcp_active_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l02129"></a><span class="lineno"> 2129</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"Local port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">", foreign port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" snd_nxt %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" rcv_nxt %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" "</span>,</div>
<div class="line"><a name="l02130"></a><span class="lineno"> 2130</span>  pcb->local_port, pcb->remote_port,</div>
<div class="line"><a name="l02131"></a><span class="lineno"> 2131</span>  pcb->snd_nxt, pcb->rcv_nxt));</div>
<div class="line"><a name="l02132"></a><span class="lineno"> 2132</span>  tcp_debug_print_state(pcb->state);</div>
<div class="line"><a name="l02133"></a><span class="lineno"> 2133</span>  }</div>
<div class="line"><a name="l02134"></a><span class="lineno"> 2134</span>  </div>
<div class="line"><a name="l02135"></a><span class="lineno"> 2135</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"Listen PCB states:\n"</span>));</div>
<div class="line"><a name="l02136"></a><span class="lineno"> 2136</span>  <span class="keywordflow">for</span> (pcbl = tcp_listen_pcbs.listen_pcbs; pcbl != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcbl = pcbl->next) {</div>
<div class="line"><a name="l02137"></a><span class="lineno"> 2137</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"Local port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" "</span>, pcbl->local_port));</div>
<div class="line"><a name="l02138"></a><span class="lineno"> 2138</span>  tcp_debug_print_state(pcbl->state);</div>
<div class="line"><a name="l02139"></a><span class="lineno"> 2139</span>  }</div>
<div class="line"><a name="l02140"></a><span class="lineno"> 2140</span>  </div>
<div class="line"><a name="l02141"></a><span class="lineno"> 2141</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"TIME-WAIT PCB states:\n"</span>));</div>
<div class="line"><a name="l02142"></a><span class="lineno"> 2142</span>  <span class="keywordflow">for</span> (pcb = tcp_tw_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l02143"></a><span class="lineno"> 2143</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a>, (<span class="stringliteral">"Local port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">", foreign port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" snd_nxt %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" rcv_nxt %"</span><a class="code" href="group__compiler__abstraction.html#gad8b0a364e95b07cb0c47709fdc6037d6">U32_F</a><span class="stringliteral">" "</span>,</div>
<div class="line"><a name="l02144"></a><span class="lineno"> 2144</span>  pcb->local_port, pcb->remote_port,</div>
<div class="line"><a name="l02145"></a><span class="lineno"> 2145</span>  pcb->snd_nxt, pcb->rcv_nxt));</div>
<div class="line"><a name="l02146"></a><span class="lineno"> 2146</span>  tcp_debug_print_state(pcb->state);</div>
<div class="line"><a name="l02147"></a><span class="lineno"> 2147</span>  }</div>
<div class="line"><a name="l02148"></a><span class="lineno"> 2148</span> }</div>
<div class="line"><a name="l02149"></a><span class="lineno"> 2149</span>  </div>
<div class="line"><a name="l02153"></a><span class="lineno"> 2153</span> <a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a></div>
<div class="line"><a name="l02154"></a><span class="lineno"> 2154</span> tcp_pcbs_sane(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l02155"></a><span class="lineno"> 2155</span> {</div>
<div class="line"><a name="l02156"></a><span class="lineno"> 2156</span>  <span class="keyword">struct </span>tcp_pcb *pcb;</div>
<div class="line"><a name="l02157"></a><span class="lineno"> 2157</span>  <span class="keywordflow">for</span> (pcb = tcp_active_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l02158"></a><span class="lineno"> 2158</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_pcbs_sane: active pcb->state != CLOSED"</span>, pcb->state != CLOSED);</div>
<div class="line"><a name="l02159"></a><span class="lineno"> 2159</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_pcbs_sane: active pcb->state != LISTEN"</span>, pcb->state != LISTEN);</div>
<div class="line"><a name="l02160"></a><span class="lineno"> 2160</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_pcbs_sane: active pcb->state != TIME-WAIT"</span>, pcb->state != TIME_WAIT);</div>
<div class="line"><a name="l02161"></a><span class="lineno"> 2161</span>  }</div>
<div class="line"><a name="l02162"></a><span class="lineno"> 2162</span>  <span class="keywordflow">for</span> (pcb = tcp_tw_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l02163"></a><span class="lineno"> 2163</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tcp_pcbs_sane: tw pcb->state == TIME-WAIT"</span>, pcb->state == TIME_WAIT);</div>
<div class="line"><a name="l02164"></a><span class="lineno"> 2164</span>  }</div>
<div class="line"><a name="l02165"></a><span class="lineno"> 2165</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l02166"></a><span class="lineno"> 2166</span> }</div>
<div class="line"><a name="l02167"></a><span class="lineno"> 2167</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l02168"></a><span class="lineno"> 2168</span>  </div>
<div class="line"><a name="l02169"></a><span class="lineno"> 2169</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_TCP */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aprot_2tcp_8h_html_a6020613f5062417d9811cfa837215c83"><div class="ttname"><a href="prot_2tcp_8h.html#a6020613f5062417d9811cfa837215c83">TCP_SYN</a></div><div class="ttdeci">#define TCP_SYN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00073">tcp.h:73</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a871d111968d8c6c7880ff36b93c5c4dd"><div class="ttname"><a href="lwipopts_8h.html#a871d111968d8c6c7880ff36b93c5c4dd">TCP_SND_BUF</a></div><div class="ttdeci">#define TCP_SND_BUF</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00184">lwipopts.h:184</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gac05a82d37afb251470f5e17ca15ab6e9"><div class="ttname"><a href="group__compiler__abstraction.html#gac05a82d37afb251470f5e17ca15ab6e9">S16_F</a></div><div class="ttdeci">#define S16_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00151">arch.h:151</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_a44b3b1ab31a403ba28ec135adfcbefef"><div class="ttname"><a href="prot_2tcp_8h.html#a44b3b1ab31a403ba28ec135adfcbefef">TCP_ACK</a></div><div class="ttdeci">#define TCP_ACK</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00076">tcp.h:76</a></div></div>
<div class="ttc" id="adef_8h_html_ac642bf6057869696d7807564d8309ffc"><div class="ttname"><a href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a></div><div class="ttdeci">#define lwip_ntohs(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00076">def.h:76</a></div></div>
<div class="ttc" id="aip_8h_html_ae392fc1ebc42a4b08f73d42c04089be9"><div class="ttname"><a href="ip_8h.html#ae392fc1ebc42a4b08f73d42c04089be9">ip_route_get_local_ip</a></div><div class="ttdeci">#define ip_route_get_local_ip(src, dest, netif, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00308">ip.h:308</a></div></div>
<div class="ttc" id="aopt_8h_html"><div class="ttname"><a href="opt_8h.html">opt.h</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a008c9c92d770cc030ea054e6b259835a"><div class="ttname"><a href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a></div><div class="ttdeci">#define ip_addr_cmp(addr1, addr2)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00316">ip_addr.h:316</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a9bac7e938757f1d24df2404e8b57cb7d"><div class="ttname"><a href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a></div><div class="ttdeci">#define IP_IS_V6(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00296">ip_addr.h:296</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gacf46f4df0ebab84edebcb69967fdf86b"><div class="ttname"><a href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a></div><div class="ttdeci">int16_t s16_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00125">arch.h:125</a></div></div>
<div class="ttc" id="adef_8h_html"><div class="ttname"><a href="def_8h.html">def.h</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a1578e34703e86711a7fb7dcc3857004d"><div class="ttname"><a href="ip__addr_8h.html#a1578e34703e86711a7fb7dcc3857004d">IP_IS_V6_VAL</a></div><div class="ttdeci">#define IP_IS_V6_VAL(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00294">ip_addr.h:294</a></div></div>
<div class="ttc" id="and6_8h_html"><div class="ttname"><a href="nd6_8h.html">nd6.h</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="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaf316b2c5eee4079820f7100849115142">ERR_ABRT</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00090">err.h:90</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a872e3bb3fe2212156d66b18fccc9643f"><div class="ttname"><a href="lwipopts_8h.html#a872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a></div><div class="ttdeci">#define LWIP_IPV6</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00366">lwipopts.h:366</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>
<div class="ttc" id="astring_8h_html"><div class="ttname"><a href="string_8h.html">string.h</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="alwipopts_8h_html_a66df03d8192cd978d3321a9d68bf5411"><div class="ttname"><a href="lwipopts_8h.html#a66df03d8192cd978d3321a9d68bf5411">TCP_CWND_DEBUG</a></div><div class="ttdeci">#define TCP_CWND_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00471">lwipopts.h:471</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a40db7feae2b92f7a7a01d65a85b06e18"><div class="ttname"><a href="ip__addr_8h.html#a40db7feae2b92f7a7a01d65a85b06e18">ip_addr_set</a></div><div class="ttdeci">#define ip_addr_set(dest, src)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00307">ip_addr.h:307</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a279118890e6a90aa740051fb8b0cc5f4"><div class="ttname"><a href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a></div><div class="ttdeci">#define ip_addr_isany(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00317">ip_addr.h:317</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__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="alwipopts_8h_html_a2dfad02b075a7f9a8791a66fe40864a4"><div class="ttname"><a href="lwipopts_8h.html#a2dfad02b075a7f9a8791a66fe40864a4">NETIF_DEBUG</a></div><div class="ttdeci">#define NETIF_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00433">lwipopts.h:433</a></div></div>
<div class="ttc" id="alwipopts_8h_html_aaf1b3a089827223589baf1b7f4f57069"><div class="ttname"><a href="lwipopts_8h.html#aaf1b3a089827223589baf1b7f4f57069">LWIP_AUTOIP</a></div><div class="ttdeci">#define LWIP_AUTOIP</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00151">lwipopts.h:151</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="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="amemp_8h_html_a2b00593d086313c267b54a976bf67aa5"><div class="ttname"><a href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a></div><div class="ttdeci">void * memp_malloc(memp_t type)</div><div class="ttdef"><b>Definition:</b> <a href="memp_8c_source.html#l00385">memp.c:385</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga4b1eca99bc81e248c7074ea87fc9ca63"><div class="ttname"><a href="group__compiler__abstraction.html#ga4b1eca99bc81e248c7074ea87fc9ca63">S32_F</a></div><div class="ttdeci">#define S32_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00160">arch.h:160</a></div></div>
<div class="ttc" id="apbuf_8h_html_a36a915aa2f6a188baa2862881407971e"><div class="ttname"><a href="pbuf_8h.html#a36a915aa2f6a188baa2862881407971e">PBUF_FLAG_TCP_FIN</a></div><div class="ttdeci">#define PBUF_FLAG_TCP_FIN</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00139">pbuf.h:139</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="amemp_8h_html_aecd94926b7c2a0e23ae195f4ae97581f"><div class="ttname"><a href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a></div><div class="ttdeci">void memp_free(memp_t type, void *mem)</div><div class="ttdef"><b>Definition:</b> <a href="memp_8c_source.html#l00469">memp.c:469</a></div></div>
<div class="ttc" id="aprot_2ip4_8h_html_ad76777d4d34f33ab5f715f9ca15503c3"><div class="ttname"><a href="prot_2ip4_8h.html#ad76777d4d34f33ab5f715f9ca15503c3">IP_HLEN</a></div><div class="ttdeci">#define IP_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2ip4_8h_source.html#l00064">ip4.h:64</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_ae6ba06711820fc4365ad0d78f70171dd"><div class="ttname"><a href="prot_2tcp_8h.html#ae6ba06711820fc4365ad0d78f70171dd">TCP_ECE</a></div><div class="ttdeci">#define TCP_ECE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00078">tcp.h:78</a></div></div>
<div class="ttc" id="astructpbuf_html_aa4d1af2cab3d9280d29212095b5b872a"><div class="ttname"><a href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">pbuf::flags</a></div><div class="ttdeci">u8_t flags</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00165">pbuf.h:165</a></div></div>
<div class="ttc" id="aip__addr_8h_html_af7d84bce2fb861a97f3047ecd69ab018"><div class="ttname"><a href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a></div><div class="ttdeci">#define ip_addr_debug_print(debug, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00323">ip_addr.h:323</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929">ERR_INPROGRESS</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00073">err.h:73</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a37596f7bbb9b7663826244ba54486679"><div class="ttname"><a href="lwipopts_8h.html#a37596f7bbb9b7663826244ba54486679">TCP_RST_DEBUG</a></div><div class="ttdeci">#define TCP_RST_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00477">lwipopts.h:477</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a89ffd0d7d1529bdb26bfbad267d0ad75"><div class="ttname"><a href="lwipopts_8h.html#a89ffd0d7d1529bdb26bfbad267d0ad75">TCP_QUEUE_OOSEQ</a></div><div class="ttdeci">#define TCP_QUEUE_OOSEQ</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00178">lwipopts.h:178</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__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca8543e1d6422fed7b318d97e08dcbaa33"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca8543e1d6422fed7b318d97e08dcbaa33">ERR_ISCONN</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00083">err.h:83</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="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa5176d9fecf8ec43d3bc49f4e6c3f7f5"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa5176d9fecf8ec43d3bc49f4e6c3f7f5">ERR_CLSD</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00094">err.h:94</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="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="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="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcab0036c51817b5200bfe8157cc4115b27"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab0036c51817b5200bfe8157cc4115b27">ERR_CONN</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00085">err.h:85</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_a5ca559def464ef20d8b1f7d32f2f160d"><div class="ttname"><a href="prot_2tcp_8h.html#a5ca559def464ef20d8b1f7d32f2f160d">TCP_RST</a></div><div class="ttdeci">#define TCP_RST</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00074">tcp.h:74</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a4f43bb8a430c7a52a1ad5086d3f2803c"><div class="ttname"><a href="lwipopts_8h.html#a4f43bb8a430c7a52a1ad5086d3f2803c">TCP_DEBUG</a></div><div class="ttdeci">#define TCP_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00463">lwipopts.h:463</a></div></div>
<div class="ttc" id="atcp__priv_8h_html"><div class="ttname"><a href="tcp__priv_8h.html">tcp_priv.h</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a88dbbfeeeb41b129fdc8235fc08bb530"><div class="ttname"><a href="lwipopts_8h.html#a88dbbfeeeb41b129fdc8235fc08bb530">LWIP_WND_SCALE</a></div><div class="ttdeci">#define LWIP_WND_SCALE</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00207">lwipopts.h:207</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="aip__addr_8h_html_a06e75bcd198012b5ba39480c233608bd"><div class="ttname"><a href="ip__addr_8h.html#a06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a></div><div class="ttdeci">#define ip_2_ip6(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00301">ip_addr.h:301</a></div></div>
<div class="ttc" id="astats_8h_html_a237a8f1e47af42fb612e936e928a9ced"><div class="ttname"><a href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a></div><div class="ttdeci">#define MIB2_STATS_INC(x)</div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00467">stats.h:467</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="aprot_2tcp_8h_html_a88e60aa2cf23e1c65d630701db08c743"><div class="ttname"><a href="prot_2tcp_8h.html#a88e60aa2cf23e1c65d630701db08c743">TCP_FIN</a></div><div class="ttdeci">#define TCP_FIN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00072">tcp.h:72</a></div></div>
<div class="ttc" id="afdc_8h_html_a3aea9deb2a0bfea9ff05a898f4822e31"><div class="ttname"><a href="fdc_8h.html#a3aea9deb2a0bfea9ff05a898f4822e31">reset</a></div><div class="ttdeci">void reset(void)</div><div class="ttdef"><b>Definition:</b> <a href="fdc_8c_source.html#l00288">fdc.c:288</a></div></div>
<div class="ttc" id="aip__addr_8h_html_ab1a059f07bd9c50aa58447d963b823a1"><div class="ttname"><a href="ip__addr_8h.html#ab1a059f07bd9c50aa58447d963b823a1">IP_IS_V4_VAL</a></div><div class="ttdeci">#define IP_IS_V4_VAL(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00293">ip_addr.h:293</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga77f6bbd69e45e542014d9c547c7da74e"><div class="ttname"><a href="group__pbuf.html#ga77f6bbd69e45e542014d9c547c7da74e">pbuf_ref</a></div><div class="ttdeci">void pbuf_ref(struct pbuf *p)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00821">pbuf.c:821</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga82429084fe29015509c9b4a072707cd4"><div class="ttname"><a href="group__pbuf.html#ga82429084fe29015509c9b4a072707cd4">pbuf_cat</a></div><div class="ttdeci">void pbuf_cat(struct pbuf *head, struct pbuf *tail)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00841">pbuf.c:841</a></div></div>
<div class="ttc" id="aip_8h_html_a1f7f7efb095c77c06af5c5e8ba558d45"><div class="ttname"><a href="ip_8h.html#a1f7f7efb095c77c06af5c5e8ba558d45">SOF_KEEPALIVE</a></div><div class="ttdeci">#define SOF_KEEPALIVE</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00098">ip.h:98</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="alwipopts_8h_html_a5d45732ba3a8438b141096d86e07ef8d"><div class="ttname"><a href="lwipopts_8h.html#a5d45732ba3a8438b141096d86e07ef8d">TCP_WND_UPDATE_THRESHOLD</a></div><div class="ttdeci">#define TCP_WND_UPDATE_THRESHOLD</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00204">lwipopts.h:204</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a7f535a6efb5cdf86c3210e35ece1d6a7"><div class="ttname"><a href="lwipopts_8h.html#a7f535a6efb5cdf86c3210e35ece1d6a7">TCP_WND</a></div><div class="ttdeci">#define TCP_WND</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00172">lwipopts.h:172</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="aip_8h_html_aa40b3366a7939ec3a60e9a7d239575e2"><div class="ttname"><a href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a></div><div class="ttdeci">#define SOF_REUSEADDR</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00097">ip.h:97</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="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="atcp_8h_html"><div class="ttname"><a href="tcp_8h.html">tcp.h</a></div></div>
<div class="ttc" id="alwipopts_8h_html_acd5b25ea81d2894790d25da5393cdab4"><div class="ttname"><a href="lwipopts_8h.html#acd5b25ea81d2894790d25da5393cdab4">TCP_TTL</a></div><div class="ttdeci">#define TCP_TTL</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00171">lwipopts.h:171</a></div></div>
<div class="ttc" id="astats_8h_html_acdadac8ecdb9710b2cbd0a0dc4a9d4c1"><div class="ttname"><a href="stats_8h.html#acdadac8ecdb9710b2cbd0a0dc4a9d4c1">MEMP_STATS_DEC</a></div><div class="ttdeci">#define MEMP_STATS_DEC(x, i)</div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00407">stats.h:407</a></div></div>
<div class="ttc" id="aprot_2ip6_8h_html_afb4c1dc527be76d8f27591dfb726c023"><div class="ttname"><a href="prot_2ip6_8h.html#afb4c1dc527be76d8f27591dfb726c023">IP6_HLEN</a></div><div class="ttdeci">#define IP6_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2ip6_8h_source.html#l00062">ip6.h:62</a></div></div>
<div class="ttc" id="aip6__addr_8h_html"><div class="ttname"><a href="ip6__addr_8h.html">ip6_addr.h</a></div></div>
<div class="ttc" id="alwipopts_8h_html_af51dc2563536de56470146749f715ba8"><div class="ttname"><a href="lwipopts_8h.html#af51dc2563536de56470146749f715ba8">TCP_INPUT_DEBUG</a></div><div class="ttdeci">#define TCP_INPUT_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00465">lwipopts.h:465</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="aip__addr_8h_html_aaa800ce1929a1bb0f3d64bebd44e4051"><div class="ttname"><a href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a></div><div class="ttdeci">#define IP_SET_TYPE_VAL(ipaddr, iptype)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00298">ip_addr.h:298</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_a1320fd0006a2f70138bc2d0018dda829"><div class="ttname"><a href="prot_2tcp_8h.html#a1320fd0006a2f70138bc2d0018dda829">TCP_PSH</a></div><div class="ttdeci">#define TCP_PSH</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00075">tcp.h:75</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_a5758db371d6daa394d178429b7c94c2a"><div class="ttname"><a href="prot_2tcp_8h.html#a5758db371d6daa394d178429b7c94c2a">TCP_HLEN</a></div><div class="ttdeci">#define TCP_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00047">tcp.h:47</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_ac84f499cba8a02fc0e306c10b2acabf0"><div class="ttname"><a href="prot_2tcp_8h.html#ac84f499cba8a02fc0e306c10b2acabf0">TCP_URG</a></div><div class="ttdeci">#define TCP_URG</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00077">tcp.h:77</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_a5b97d3b7e68c20eb3eab87a61d779223"><div class="ttname"><a href="prot_2tcp_8h.html#a5b97d3b7e68c20eb3eab87a61d779223">TCPH_HDRLEN</a></div><div class="ttdeci">#define TCPH_HDRLEN(phdr)</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00083">tcp.h:83</a></div></div>
<div class="ttc" id="aip_8h_html_a26e077f52de4a97ff89c02415c084518"><div class="ttname"><a href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a></div><div class="ttdeci">#define ip_get_option(pcb, opt)</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00215">ip.h:215</a></div></div>
<div class="ttc" id="astructtcp__hdr_html"><div class="ttname"><a href="structtcp__hdr.html">tcp_hdr</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00056">tcp.h:56</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcae6f9c1e4c18ca844f7934307d4cc30e5"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcae6f9c1e4c18ca844f7934307d4cc30e5">ERR_ALREADY</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00081">err.h:81</a></div></div>
<div class="ttc" id="aprot_2tcp_8h_html_a6f441228e74f83c026c48360667beb48"><div class="ttname"><a href="prot_2tcp_8h.html#a6f441228e74f83c026c48360667beb48">TCP_CWR</a></div><div class="ttdeci">#define TCP_CWR</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00079">tcp.h:79</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="amemp_8h_html"><div class="ttname"><a href="memp_8h.html">memp.h</a></div></div>
<div class="ttc" id="alwipopts_8h_html_ad6e52e37415d0d0cbe4931a28f5a9662"><div class="ttname"><a href="lwipopts_8h.html#ad6e52e37415d0d0cbe4931a28f5a9662">TCP_RTO_DEBUG</a></div><div class="ttdeci">#define TCP_RTO_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00469">lwipopts.h:469</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00079">err.h:79</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="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00071">err.h:71</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a8c6e3c1e4f74acb16376188dbf8909ec"><div class="ttname"><a href="lwipopts_8h.html#a8c6e3c1e4f74acb16376188dbf8909ec">SMEMCPY</a></div><div class="ttdeci">#define SMEMCPY(dst, src, len)</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00044">lwipopts.h:44</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="alwipopts_8h_html_a0dee0911197855bdf19ef79778c241a6"><div class="ttname"><a href="lwipopts_8h.html#a0dee0911197855bdf19ef79778c241a6">TCP_MAXRTX</a></div><div class="ttdeci">#define TCP_MAXRTX</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00174">lwipopts.h:174</a></div></div>
<div class="ttc" id="aip6_8h_html"><div class="ttname"><a href="ip6_8h.html">ip6.h</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="aprot_2tcp_8h_html_ad5de3cf876b2c7f6835f44132fe0e9d5"><div class="ttname"><a href="prot_2tcp_8h.html#ad5de3cf876b2c7f6835f44132fe0e9d5">TCPH_FLAGS</a></div><div class="ttdeci">#define TCPH_FLAGS(phdr)</div><div class="ttdef"><b>Definition:</b> <a href="prot_2tcp_8h_source.html#l00084">tcp.h:84</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a50b434a8541a4813f7b27f576c05d1b6"><div class="ttname"><a href="lwipopts_8h.html#a50b434a8541a4813f7b27f576c05d1b6">TCP_SYNMAXRTX</a></div><div class="ttdeci">#define TCP_SYNMAXRTX</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00176">lwipopts.h:176</a></div></div>
<div class="ttc" id="adebug_8h_html"><div class="ttname"><a href="debug_8h.html">debug.h</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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