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<div class="title">tcp_priv.h</div> </div>
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<a href="../../da/d54/tcp__priv_8h.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="l00006"></a><span class="lineno"> 6</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Copyright (c) 2001-2004 Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</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="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</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="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</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="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#ifndef LWIP_HDR_TCP_PRIV_H</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#define LWIP_HDR_TCP_PRIV_H</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include "<a class="code" href="../../dc/dba/opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</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="l00043"></a><span class="lineno"> 43</span>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include "<a class="code" href="../../d8/da5/tcp_8h.html">net/tcp.h</a>"</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "<a class="code" href="../../d9/d9a/mem_8h.html">net/mem.h</a>"</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include "<a class="code" href="../../d0/d35/pbuf_8h.html">net/pbuf.h</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#include "<a class="code" href="../../da/d2f/ip_8h.html">net/ip.h</a>"</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include "<a class="code" href="../../d0/d49/icmp_8h.html">net/icmp.h</a>"</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#include "<a class="code" href="../../d6/d40/err_8h.html">net/err.h</a>"</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#include "<a class="code" href="../../d0/dca/ip6_8h.html">net/ip6.h</a>"</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#include "<a class="code" href="../../d3/d7d/ip6__addr_8h.html">net/ip6_addr.h</a>"</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include "<a class="code" href="../../d9/d67/prot_2tcp_8h.html">net/prot/tcp.h</a>"</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">/* Functions for interfacing with TCP: */</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">/* Lower layer interface to TCP: */</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">void</span> tcp_init (<span class="keywordtype">void</span>); <span class="comment">/* Initialize this module. */</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">void</span> tcp_tmr (<span class="keywordtype">void</span>); <span class="comment">/* Must be called every</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> TCP_TMR_INTERVAL</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> ms. (Typically 250 ms). */</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">/* It is also possible to call these two functions at the right</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> intervals (instead of calling tcp_tmr()). */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keywordtype">void</span> tcp_slowtmr (<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keywordtype">void</span> tcp_fasttmr (<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">/* Call this from a netif driver (watch out for threading issues!) that has</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> returned a memory error on transmit and now has free buffers to send more.</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> This iterates all active pcbs that had an error and tries to call</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> tcp_output, so use this with care as it might slow down the system. */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">void</span> tcp_txnow (<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">/* Only used by IP to pass a TCP segment to TCP: */</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keywordtype">void</span> tcp_input (<span class="keyword">struct</span> <a class="code" href="../../d9/db8/structpbuf.html">pbuf</a> *p, <span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *inp);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">/* Used within the TCP code only: */</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">struct </span>tcp_pcb * tcp_alloc (<a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> prio);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keywordtype">void</span> tcp_abandon (<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keywordtype">int</span> <a class="code" href="../../d5/d67/fdc_8h.html#a3aea9deb2a0bfea9ff05a898f4822e31">reset</a>);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_send_empty_ack(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keywordtype">void</span> tcp_rexmit (<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="keywordtype">void</span> tcp_rexmit_rto (<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keywordtype">void</span> tcp_rexmit_fast (<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> tcp_update_rcv_ann_wnd(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_process_refused_data(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor">#define tcp_do_output_nagle(tpcb) ((((tpcb)->unacked == NULL) || \</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor"> ((tpcb)->flags & (TF_NODELAY | TF_INFR)) || \</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor"> (((tpcb)->unsent != NULL) && (((tpcb)->unsent->next != NULL) || \</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor"> ((tpcb)->unsent->len >= (tpcb)->mss))) || \</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor"> ((tcp_sndbuf(tpcb) == 0) || (tcp_sndqueuelen(tpcb) >= TCP_SND_QUEUELEN)) \</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor"> ) ? 1 : 0)</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#define tcp_output_nagle(tpcb) (tcp_do_output_nagle(tpcb) ? tcp_output(tpcb) : ERR_OK)</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="preprocessor">#define TCP_SEQ_LT(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) < 0)</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor">#define TCP_SEQ_LEQ(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) <= 0)</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor">#define TCP_SEQ_GT(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) > 0)</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="preprocessor">#define TCP_SEQ_GEQ(a,b) ((s32_t)((u32_t)(a) - (u32_t)(b)) >= 0)</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">/* is b<=a<=c? */</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#if 0 </span><span class="comment">/* see bug #10548 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#define TCP_SEQ_BETWEEN(a,b,c) ((c)-(b) >= (a)-(b))</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#define TCP_SEQ_BETWEEN(a,b,c) (TCP_SEQ_GEQ(a,b) && TCP_SEQ_LEQ(a,c))</span></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="preprocessor">#ifndef TCP_TMR_INTERVAL</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor">#define TCP_TMR_INTERVAL 250 </span><span class="comment">/* The TCP timer interval in milliseconds. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_TMR_INTERVAL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#ifndef TCP_FAST_INTERVAL</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor">#define TCP_FAST_INTERVAL TCP_TMR_INTERVAL </span><span class="comment">/* the fine grained timeout in milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_FAST_INTERVAL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#ifndef TCP_SLOW_INTERVAL</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor">#define TCP_SLOW_INTERVAL (2*TCP_TMR_INTERVAL) </span><span class="comment">/* the coarse grained timeout in milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_SLOW_INTERVAL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#define TCP_FIN_WAIT_TIMEOUT 20000 </span><span class="comment">/* milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor">#define TCP_SYN_RCVD_TIMEOUT 20000 </span><span class="comment">/* milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#define TCP_OOSEQ_TIMEOUT 6U </span><span class="comment">/* x RTO */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor">#ifndef TCP_MSL</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#define TCP_MSL 60000UL </span><span class="comment">/* The maximum segment lifetime in milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment">/* Keepalive values, compliant with RFC 1122. Don't change this unless you know what you're doing */</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#ifndef TCP_KEEPIDLE_DEFAULT</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#define TCP_KEEPIDLE_DEFAULT 7200000UL </span><span class="comment">/* Default KEEPALIVE timer in milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor">#ifndef TCP_KEEPINTVL_DEFAULT</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#define TCP_KEEPINTVL_DEFAULT 75000UL </span><span class="comment">/* Default Time between KEEPALIVE probes in milliseconds */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor">#ifndef TCP_KEEPCNT_DEFAULT</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#define TCP_KEEPCNT_DEFAULT 9U </span><span class="comment">/* Default Counter for KEEPALIVE probes */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor">#define TCP_MAXIDLE TCP_KEEPCNT_DEFAULT * TCP_KEEPINTVL_DEFAULT </span><span class="comment">/* Maximum KEEPALIVE probe time */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor">#define TCP_TCPLEN(seg) ((seg)->len + (((TCPH_FLAGS((seg)->tcphdr) & (TCP_FIN | TCP_SYN)) != 0) ? 1U : 0U))</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor">#define TF_RESET (u8_t)0x08U </span><span class="comment">/* Connection was reset. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor">#define TF_CLOSED (u8_t)0x10U </span><span class="comment">/* Connection was successfully closed. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor">#define TF_GOT_FIN (u8_t)0x20U </span><span class="comment">/* Connection was closed by the remote end. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#if LWIP_EVENT_API</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor">#define TCP_EVENT_ACCEPT(lpcb,pcb,arg,err,ret) ret = lwip_tcp_event(arg, (pcb),\</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor"> LWIP_EVENT_ACCEPT, NULL, 0, err)</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="preprocessor">#define TCP_EVENT_SENT(pcb,space,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor"> LWIP_EVENT_SENT, NULL, space, ERR_OK)</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor">#define TCP_EVENT_RECV(pcb,p,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor"> LWIP_EVENT_RECV, (p), 0, (err))</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#define TCP_EVENT_CLOSED(pcb,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"> LWIP_EVENT_RECV, NULL, 0, ERR_OK)</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#define TCP_EVENT_CONNECTED(pcb,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"> LWIP_EVENT_CONNECTED, NULL, 0, (err))</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor">#define TCP_EVENT_POLL(pcb,ret) do { if ((pcb)->state != SYN_RCVD) { \</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"> ret = lwip_tcp_event((pcb)->callback_arg, (pcb), LWIP_EVENT_POLL, NULL, 0, ERR_OK); \</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor"> ret = ERR_ARG; } } while(0)</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor">#define TCP_EVENT_ERR(last_state,errf,arg,err) do { if (last_state != SYN_RCVD) { \</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor"> lwip_tcp_event((arg), NULL, LWIP_EVENT_ERR, NULL, 0, (err)); } } while(0)</span></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> <span class="preprocessor">#else </span><span class="comment">/* LWIP_EVENT_API */</span><span class="preprocessor"></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">#define TCP_EVENT_ACCEPT(lpcb,pcb,arg,err,ret) \</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="preprocessor"> if((lpcb)->accept != NULL) \</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="preprocessor"> (ret) = (lpcb)->accept((arg),(pcb),(err)); \</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="preprocessor"> else (ret) = ERR_ARG; \</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  </div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="preprocessor">#define TCP_EVENT_SENT(pcb,space,ret) \</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor"> if((pcb)->sent != NULL) \</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="preprocessor"> (ret) = (pcb)->sent((pcb)->callback_arg,(pcb),(space)); \</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="preprocessor"> else (ret) = ERR_OK; \</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="preprocessor">#define TCP_EVENT_RECV(pcb,p,err,ret) \</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor"> if((pcb)->recv != NULL) { \</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor"> (ret) = (pcb)->recv((pcb)->callback_arg,(pcb),(p),(err));\</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"> (ret) = tcp_recv_null(NULL, (pcb), (p), (err)); \</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="preprocessor">#define TCP_EVENT_CLOSED(pcb,ret) \</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="preprocessor"> if(((pcb)->recv != NULL)) { \</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="preprocessor"> (ret) = (pcb)->recv((pcb)->callback_arg,(pcb),NULL,ERR_OK);\</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="preprocessor"> } else { \</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor"> (ret) = ERR_OK; \</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="preprocessor">#define TCP_EVENT_CONNECTED(pcb,err,ret) \</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="preprocessor"> if((pcb)->connected != NULL) \</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="preprocessor"> (ret) = (pcb)->connected((pcb)->callback_arg,(pcb),(err)); \</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="preprocessor"> else (ret) = ERR_OK; \</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="preprocessor">#define TCP_EVENT_POLL(pcb,ret) \</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="preprocessor"> if((pcb)->poll != NULL) \</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="preprocessor"> (ret) = (pcb)->poll((pcb)->callback_arg,(pcb)); \</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="preprocessor"> else (ret) = ERR_OK; \</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  </div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="preprocessor">#define TCP_EVENT_ERR(last_state,errf,arg,err) \</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="preprocessor"> LWIP_UNUSED_ARG(last_state); \</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="preprocessor"> if((errf) != NULL) \</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor"> (errf)((arg),(err)); \</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_EVENT_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  </div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="preprocessor">#if TCP_OVERSIZE && defined(LWIP_DEBUG)</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="preprocessor">#define TCP_OVERSIZE_DBGCHECK 1</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="preprocessor">#define TCP_OVERSIZE_DBGCHECK 0</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="preprocessor">#define TCP_CHECKSUM_ON_COPY (LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_TCP)</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment">/* This structure represents a TCP segment on the unsent, unacked and ooseq queues */</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="keyword">struct </span>tcp_seg {</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keyword">struct </span>tcp_seg *next; <span class="comment">/* used when putting segments on a queue */</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">struct </span><a class="code" href="../../d9/db8/structpbuf.html">pbuf</a> *p; <span class="comment">/* buffer containing data + TCP header */</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="../../d9/db8/structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>; <span class="comment">/* the TCP length of this segment */</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> <span class="preprocessor">#if TCP_OVERSIZE_DBGCHECK</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> oversize_left; <span class="comment">/* Extra bytes available at the end of the last</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="comment"> pbuf in unsent (used for asserting vs.</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment"> tcp_pcb.unsent_oversize only) */</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_OVERSIZE_DBGCHECK */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="preprocessor">#if TCP_CHECKSUM_ON_COPY</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chksum;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> chksum_swapped;</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_CHECKSUM_ON_COPY */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> <a class="code" href="../../d9/db8/structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a>;</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="preprocessor">#define TF_SEG_OPTS_MSS (u8_t)0x01U </span><span class="comment">/* Include MSS option. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="preprocessor">#define TF_SEG_OPTS_TS (u8_t)0x02U </span><span class="comment">/* Include timestamp option. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="preprocessor">#define TF_SEG_DATA_CHECKSUMMED (u8_t)0x04U </span><span class="comment">/* ALL data (not the header) is</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment"> checksummed into 'chksum' */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="preprocessor">#define TF_SEG_OPTS_WND_SCALE (u8_t)0x08U </span><span class="comment">/* Include WND SCALE option */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">struct </span><a class="code" href="../../db/df4/structtcp__hdr.html">tcp_hdr</a> *tcphdr; <span class="comment">/* the TCP header */</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> };</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  </div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="preprocessor">#define LWIP_TCP_OPT_EOL 0</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="preprocessor">#define LWIP_TCP_OPT_NOP 1</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="preprocessor">#define LWIP_TCP_OPT_MSS 2</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="preprocessor">#define LWIP_TCP_OPT_WS 3</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="preprocessor">#define LWIP_TCP_OPT_TS 8</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  </div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_MSS 4</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="preprocessor">#if LWIP_TCP_TIMESTAMPS</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_TS 10</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_TS_OUT 12 </span><span class="comment">/* aligned for output (includes NOP padding) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_TS_OUT 0</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="preprocessor">#if LWIP_WND_SCALE</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_WS 3</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_WS_OUT 4 </span><span class="comment">/* aligned for output (includes NOP padding) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="preprocessor">#define LWIP_TCP_OPT_LEN_WS_OUT 0</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="preprocessor">#define LWIP_TCP_OPT_LENGTH(flags) \</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="preprocessor"> (flags & TF_SEG_OPTS_MSS ? LWIP_TCP_OPT_LEN_MSS : 0) + \</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="preprocessor"> (flags & TF_SEG_OPTS_TS ? LWIP_TCP_OPT_LEN_TS_OUT : 0) + \</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="preprocessor"> (flags & TF_SEG_OPTS_WND_SCALE ? LWIP_TCP_OPT_LEN_WS_OUT : 0)</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  </div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="preprocessor">#define TCP_BUILD_MSS_OPTION(mss) lwip_htonl(0x02040000 | ((mss) & 0xFFFF))</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  </div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="preprocessor">#if LWIP_WND_SCALE</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="preprocessor">#define TCPWNDSIZE_F U32_F</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="preprocessor">#define TCPWND_MAX 0xFFFFFFFFU</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="preprocessor">#define TCPWND_CHECK16(x) LWIP_ASSERT("window size > 0xFFFF", (x) <= 0xFFFF)</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="preprocessor">#define TCPWND_MIN16(x) ((u16_t)LWIP_MIN((x), 0xFFFF))</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_WND_SCALE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="preprocessor">#define TCPWNDSIZE_F U16_F</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="preprocessor">#define TCPWND_MAX 0xFFFFU</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="preprocessor">#define TCPWND_CHECK16(x)</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="preprocessor">#define TCPWND_MIN16(x) x</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_WND_SCALE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  </div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="comment">/* Global variables: */</span></div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="keyword">extern</span> <span class="keyword">struct </span>tcp_pcb *tcp_input_pcb;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="keyword">extern</span> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> tcp_ticks;</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="keyword">extern</span> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tcp_active_pcbs_changed;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  </div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment">/* The TCP PCB lists. */</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="keyword">union </span>tcp_listen_pcbs_t { <span class="comment">/* List of all TCP PCBs in LISTEN state. */</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keyword">struct </span>tcp_pcb_listen *listen_pcbs;</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keyword">struct </span>tcp_pcb *pcbs;</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> };</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="keyword">extern</span> <span class="keyword">struct </span>tcp_pcb *tcp_bound_pcbs;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="keyword">extern</span> <span class="keyword">union </span>tcp_listen_pcbs_t tcp_listen_pcbs;</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="keyword">extern</span> <span class="keyword">struct </span>tcp_pcb *tcp_active_pcbs; <span class="comment">/* List of all TCP PCBs that are in a</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="comment"> state in which they accept or send</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="comment"> data. */</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="keyword">extern</span> <span class="keyword">struct </span>tcp_pcb *tcp_tw_pcbs; <span class="comment">/* List of all TCP PCBs in TIME-WAIT. */</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="preprocessor">#define NUM_TCP_PCB_LISTS_NO_TIME_WAIT 3</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="preprocessor">#define NUM_TCP_PCB_LISTS 4</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="keyword">extern</span> <span class="keyword">struct </span>tcp_pcb ** <span class="keyword">const</span> tcp_pcb_lists[NUM_TCP_PCB_LISTS];</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  </div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment">/* Axioms about the above lists:</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment"> 1) Every TCP PCB that is not CLOSED is in one of the lists.</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment"> 2) A PCB is only in one of the lists.</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment"> 3) All PCBs in the tcp_listen_pcbs list is in LISTEN state.</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="comment"> 4) All PCBs in the tcp_tw_pcbs list is in TIME-WAIT state.</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="comment">/* Define two macros, TCP_REG and TCP_RMV that registers a TCP PCB</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment"> with a PCB list or removes a PCB from a list, respectively. */</span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="preprocessor">#ifndef TCP_DEBUG_PCB_LISTS</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="preprocessor">#define TCP_DEBUG_PCB_LISTS 0</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="preprocessor">#if TCP_DEBUG_PCB_LISTS</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="preprocessor">#define TCP_REG(pcbs, npcb) do {\</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="preprocessor"> struct tcp_pcb *tcp_tmp_pcb; \</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="preprocessor"> LWIP_DEBUGF(TCP_DEBUG, ("TCP_REG %p local port %d\n", (npcb), (npcb)->local_port)); \</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="preprocessor"> for (tcp_tmp_pcb = *(pcbs); \</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="preprocessor"> tcp_tmp_pcb != NULL; \</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="preprocessor"> tcp_tmp_pcb = tcp_tmp_pcb->next) { \</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="preprocessor"> LWIP_ASSERT("TCP_REG: already registered\n", tcp_tmp_pcb != (npcb)); \</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="preprocessor"> LWIP_ASSERT("TCP_REG: pcb->state != CLOSED", ((pcbs) == &tcp_bound_pcbs) || ((npcb)->state != CLOSED)); \</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="preprocessor"> (npcb)->next = *(pcbs); \</span></div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="preprocessor"> LWIP_ASSERT("TCP_REG: npcb->next != npcb", (npcb)->next != (npcb)); \</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="preprocessor"> *(pcbs) = (npcb); \</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="preprocessor"> LWIP_ASSERT("TCP_RMV: tcp_pcbs sane", tcp_pcbs_sane()); \</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="preprocessor"> tcp_timer_needed(); \</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="preprocessor">#define TCP_RMV(pcbs, npcb) do { \</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="preprocessor"> struct tcp_pcb *tcp_tmp_pcb; \</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="preprocessor"> LWIP_ASSERT("TCP_RMV: pcbs != NULL", *(pcbs) != NULL); \</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> <span class="preprocessor"> LWIP_DEBUGF(TCP_DEBUG, ("TCP_RMV: removing %p from %p\n", (npcb), *(pcbs))); \</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="preprocessor"> if(*(pcbs) == (npcb)) { \</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="preprocessor"> *(pcbs) = (*pcbs)->next; \</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> <span class="preprocessor"> } else for (tcp_tmp_pcb = *(pcbs); tcp_tmp_pcb != NULL; tcp_tmp_pcb = tcp_tmp_pcb->next) { \</span></div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="preprocessor"> if(tcp_tmp_pcb->next == (npcb)) { \</span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="preprocessor"> tcp_tmp_pcb->next = (npcb)->next; \</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="preprocessor"> break; \</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="preprocessor"> (npcb)->next = NULL; \</span></div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="preprocessor"> LWIP_ASSERT("TCP_RMV: tcp_pcbs sane", tcp_pcbs_sane()); \</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="preprocessor"> LWIP_DEBUGF(TCP_DEBUG, ("TCP_RMV: removed %p from %p\n", (npcb), *(pcbs))); \</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  </div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> <span class="preprocessor">#define TCP_REG(pcbs, npcb) \</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="preprocessor"> (npcb)->next = *pcbs; \</span></div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="preprocessor"> *(pcbs) = (npcb); \</span></div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="preprocessor"> tcp_timer_needed(); \</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  </div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> <span class="preprocessor">#define TCP_RMV(pcbs, npcb) \</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> <span class="preprocessor"> if(*(pcbs) == (npcb)) { \</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="preprocessor"> (*(pcbs)) = (*pcbs)->next; \</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="preprocessor"> else { \</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="preprocessor"> struct tcp_pcb *tcp_tmp_pcb; \</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="preprocessor"> for (tcp_tmp_pcb = *pcbs; \</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="preprocessor"> tcp_tmp_pcb != NULL; \</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="preprocessor"> tcp_tmp_pcb = tcp_tmp_pcb->next) { \</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="preprocessor"> if(tcp_tmp_pcb->next == (npcb)) { \</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="preprocessor"> tcp_tmp_pcb->next = (npcb)->next; \</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="preprocessor"> break; \</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="preprocessor"> (npcb)->next = NULL; \</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="preprocessor"> } while(0)</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  </div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="preprocessor">#define TCP_REG_ACTIVE(npcb) \</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="preprocessor"> TCP_REG(&tcp_active_pcbs, npcb); \</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="preprocessor"> tcp_active_pcbs_changed = 1; \</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  </div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="preprocessor">#define TCP_RMV_ACTIVE(npcb) \</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="preprocessor"> TCP_RMV(&tcp_active_pcbs, npcb); \</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="preprocessor"> tcp_active_pcbs_changed = 1; \</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  </div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="preprocessor">#define TCP_PCB_REMOVE_ACTIVE(pcb) \</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="preprocessor"> tcp_pcb_remove(&tcp_active_pcbs, pcb); \</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="preprocessor"> tcp_active_pcbs_changed = 1; \</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  </div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  </div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="comment">/* Internal functions: */</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="keyword">struct </span>tcp_pcb *tcp_pcb_copy(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="keywordtype">void</span> tcp_pcb_purge(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="keywordtype">void</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="l00428"></a><span class="lineno"> 428</span>  </div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="keywordtype">void</span> tcp_segs_free(<span class="keyword">struct</span> tcp_seg *seg);</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="keywordtype">void</span> tcp_seg_free(<span class="keyword">struct</span> tcp_seg *seg);</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="keyword">struct </span>tcp_seg *tcp_seg_copy(<span class="keyword">struct</span> tcp_seg *seg);</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  </div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="preprocessor">#define tcp_ack(pcb) \</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="preprocessor"> if((pcb)->flags & TF_ACK_DELAY) { \</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="preprocessor"> (pcb)->flags &= ~TF_ACK_DELAY; \</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="preprocessor"> (pcb)->flags |= TF_ACK_NOW; \</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="preprocessor"> else { \</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="preprocessor"> (pcb)->flags |= TF_ACK_DELAY; \</span></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="preprocessor"> } while (0)</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="preprocessor">#define tcp_ack_now(pcb) \</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="preprocessor"> (pcb)->flags |= TF_ACK_NOW; \</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span> <span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  </div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_send_fin(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_enqueue_flags(<span class="keyword">struct</span> tcp_pcb *pcb, <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> flags);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  </div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> <span class="keywordtype">void</span> tcp_rexmit_seg(<span class="keyword">struct</span> tcp_pcb *pcb, <span class="keyword">struct</span> tcp_seg *seg);</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="keywordtype">void</span> tcp_rst(<a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> seqno, <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> ackno,</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keyword">const</span> <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *local_ip, <span class="keyword">const</span> <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *remote_ip,</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> local_port, <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> remote_port);</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> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> tcp_next_iss(<span class="keyword">struct</span> tcp_pcb *pcb);</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> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_keepalive(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcp_zero_window_probe(<span class="keyword">struct</span> tcp_pcb *pcb);</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="keywordtype">void</span> tcp_trigger_input_pcb_close(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="preprocessor">#if TCP_CALCULATE_EFF_SEND_MSS</span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> tcp_eff_send_mss_impl(<a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> sendmss, <span class="keyword">const</span> <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dest</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> #<span class="keywordflow">if</span> <a class="code" href="../../d2/d78/lwipopts_8h.html#a872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a> || LWIP_IPV4_SRC_ROUTING</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  , <span class="keyword">const</span> <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *src</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span> #endif <span class="comment">/* LWIP_IPV6 || LWIP_IPV4_SRC_ROUTING */</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  );</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="preprocessor">#if LWIP_IPV6 || LWIP_IPV4_SRC_ROUTING</span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span> <span class="preprocessor">#define tcp_eff_send_mss(sendmss, src, dest) tcp_eff_send_mss_impl(sendmss, dest, src)</span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_IPV6 || LWIP_IPV4_SRC_ROUTING */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="preprocessor">#define tcp_eff_send_mss(sendmss, src, dest) tcp_eff_send_mss_impl(sendmss, dest)</span></div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 || LWIP_IPV4_SRC_ROUTING */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</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="l00476"></a><span class="lineno"> 476</span>  </div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="preprocessor">#if LWIP_CALLBACK_API</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> 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="../../d9/db8/structpbuf.html">pbuf</a> *p, <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err);</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CALLBACK_API */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> <span class="preprocessor">#if TCP_DEBUG || TCP_INPUT_DEBUG || TCP_OUTPUT_DEBUG</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="keywordtype">void</span> tcp_debug_print(<span class="keyword">struct</span> <a class="code" href="../../db/df4/structtcp__hdr.html">tcp_hdr</a> *tcphdr);</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> <span class="keywordtype">void</span> tcp_debug_print_flags(<a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> flags);</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> <span class="keywordtype">void</span> tcp_debug_print_state(<span class="keyword">enum</span> tcp_state s);</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> <span class="keywordtype">void</span> tcp_debug_print_pcbs(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <a class="code" href="../../de/d8c/group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> tcp_pcbs_sane(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> <span class="preprocessor"># define tcp_debug_print(tcphdr)</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> <span class="preprocessor"># define tcp_debug_print_flags(flags)</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> <span class="preprocessor"># define tcp_debug_print_state(s)</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="preprocessor"># define tcp_debug_print_pcbs()</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="preprocessor"># define tcp_pcbs_sane() 1</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="preprocessor">#endif </span><span class="comment">/* TCP_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  </div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="keywordtype">void</span> <a class="code" href="../../d2/d2b/timeouts_8c.html#a8181bc316fdf61b85f787c5cadfcd249">tcp_timer_needed</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  </div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="keywordtype">void</span> tcp_netif_ip_addr_changed(<span class="keyword">const</span> <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* old_addr, <span class="keyword">const</span> <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* new_addr);</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  </div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> }</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  </div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_TCP */</span><span class="preprocessor"></span></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="preprocessor">#endif </span><span class="comment">/* LWIP_HDR_TCP_PRIV_H */</span><span class="preprocessor"></span></div>
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