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<div class="title">pbuf.c</div> </div>
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<div class="contents">
<a href="pbuf_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="l00080"></a><span class="lineno"> 80</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> * Copyright (c) 2001-2004 Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</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="l00093"></a><span class="lineno"> 93</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</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="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</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="l00104"></a><span class="lineno"> 104</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#include "<a class="code" href="stats_8h.html">net/stats.h</a>"</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#include "<a class="code" href="def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#include "<a class="code" href="mem_8h.html">net/mem.h</a>"</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor">#include "<a class="code" href="memp_8h.html">net/memp.h</a>"</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#include "<a class="code" href="pbuf_8h.html">net/pbuf.h</a>"</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#include "<a class="code" href="sys_8h.html">net/sys.h</a>"</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#if LWIP_TCP && TCP_QUEUE_OOSEQ</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</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="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#include "<a class="code" href="inet__chksum_8h.html">net/inet_chksum.h</a>"</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3"> 129</a></span> <span class="preprocessor">#define SIZEOF_STRUCT_PBUF LWIP_MEM_ALIGN_SIZE(sizeof(struct pbuf))</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">/* Since the pool is created in memp, PBUF_POOL_BUFSIZE will be automatically</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> aligned there. Therefore, PBUF_POOL_BUFSIZE_ALIGNED can be used here. */</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f"> 132</a></span> <span class="preprocessor">#define PBUF_POOL_BUFSIZE_ALIGNED LWIP_MEM_ALIGN_SIZE(PBUF_POOL_BUFSIZE)</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#if !LWIP_TCP || !TCP_QUEUE_OOSEQ || !PBUF_POOL_FREE_OOSEQ</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="pbuf_8c.html#aed70c61e971683736c569a1a99b76569"> 135</a></span> <span class="preprocessor">#define PBUF_POOL_IS_EMPTY()</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor">#else </span><span class="comment">/* !LWIP_TCP || !TCP_QUEUE_OOSEQ || !PBUF_POOL_FREE_OOSEQ */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#if !NO_SYS</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#ifndef PBUF_POOL_FREE_OOSEQ_QUEUE_CALL</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#include "<a class="code" href="tcpip_8h.html">net/tcpip.h</a>"</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#define PBUF_POOL_FREE_OOSEQ_QUEUE_CALL() do { \</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor"> if (tcpip_callback_with_block(pbuf_free_ooseq_callback, NULL, 0) != ERR_OK) { \</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor"> SYS_ARCH_PROTECT(old_level); \</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor"> pbuf_free_ooseq_pending = 0; \</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor"> SYS_ARCH_UNPROTECT(old_level); \</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor"> } } while(0)</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#endif </span><span class="comment">/* PBUF_POOL_FREE_OOSEQ_QUEUE_CALL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor">#endif </span><span class="comment">/* !NO_SYS */</span><span class="preprocessor"></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="keyword">volatile</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pbuf_free_ooseq_pending;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#define PBUF_POOL_IS_EMPTY() pbuf_pool_is_empty()</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#if !NO_SYS</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keyword">static</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor">#endif </span><span class="comment">/* !NO_SYS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> pbuf_free_ooseq(<span class="keywordtype">void</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>  <span class="keyword">struct </span>tcp_pcb* pcb;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="sys_8h.html#a24ff55288a4d9fa28100c78b2f4612f6">SYS_ARCH_SET</a>(pbuf_free_ooseq_pending, 0);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">for</span> (pcb = tcp_active_pcbs; <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> != pcb; pcb = pcb->next) {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (<a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> != pcb->ooseq) {</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_free_ooseq: freeing out-of-sequence pbufs\n"</span>));</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  tcp_segs_free(pcb->ooseq);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  pcb->ooseq = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</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>  </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="preprocessor">#if !NO_SYS</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> pbuf_free_ooseq_callback(<span class="keywordtype">void</span> *arg)</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> {</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(arg);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  pbuf_free_ooseq();</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> }</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor">#endif </span><span class="comment">/* !NO_SYS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> pbuf_pool_is_empty(<span class="keywordtype">void</span>)</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">#ifndef PBUF_POOL_FREE_OOSEQ_QUEUE_CALL</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="sys_8h.html#a24ff55288a4d9fa28100c78b2f4612f6">SYS_ARCH_SET</a>(pbuf_free_ooseq_pending, 1);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor">#else </span><span class="comment">/* PBUF_POOL_FREE_OOSEQ_QUEUE_CALL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> queued;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <a class="code" href="sys_8h.html#a945395fa326214fc9736487242710a90">SYS_ARCH_DECL_PROTECT</a>(old_level);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="sys_8h.html#a3d0e48feafd378e9c26c64567ecd8bab">SYS_ARCH_PROTECT</a>(old_level);</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  queued = pbuf_free_ooseq_pending;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  pbuf_free_ooseq_pending = 1;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="sys_8h.html#a2f48e97047945642ddeb27e65bf4ffe2">SYS_ARCH_UNPROTECT</a>(old_level);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (!queued) {</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="comment">/* queue a call to pbuf_free_ooseq if not already queued */</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  PBUF_POOL_FREE_OOSEQ_QUEUE_CALL();</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="preprocessor">#endif </span><span class="comment">/* PBUF_POOL_FREE_OOSEQ_QUEUE_CALL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="preprocessor">#endif </span><span class="comment">/* !LWIP_TCP || !TCP_QUEUE_OOSEQ || !PBUF_POOL_FREE_OOSEQ */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *</div>
<div class="line"><a name="l00248"></a><span class="lineno"><a class="line" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47"> 248</a></span> <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(<a class="code" href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a> layer, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> length, <a class="code" href="group__pbuf.html#gab7e0e32fcc292c0d7107721766ed92fb">pbuf_type</a> <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>)</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> {</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *p, *q, *r;</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="group__compiler__abstraction.html#ga10f9a3d7baef58ccc23228c3bd29c1fb">s32_t</a> rem_len; <span class="comment">/* remaining length */</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_alloc(length=%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, length));</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  </div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">/* determine header offset */</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">switch</span> (layer) {</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a>:</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">/* add room for transport (often TCP) layer header */</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a> + <a class="code" href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a> + <a class="code" href="pbuf_8h.html#aae0fea237167bb06ea4dc5333df5b0a7">PBUF_IP_HLEN</a> + <a class="code" href="pbuf_8h.html#af9da2e1ca60dc0c584938ccc5d662307">PBUF_TRANSPORT_HLEN</a>;</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfafcc1e506061ba69dfa142eb6b3da5f13">PBUF_IP</a>:</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="comment">/* add room for IP layer header */</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a> + <a class="code" href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a> + <a class="code" href="pbuf_8h.html#aae0fea237167bb06ea4dc5333df5b0a7">PBUF_IP_HLEN</a>;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfab4de441e737330558b609a990cd17346">PBUF_LINK</a>:</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">/* add room for link layer header */</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a> + <a class="code" href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a>;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa0ff039585f05f9208bcb66c2d37783e2">PBUF_RAW_TX</a>:</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="comment">/* add room for encapsulating link layer headers (e.g. 802.11) */</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a>;</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a>:</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">/* no offset (e.g. RX buffers or chain successors) */</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  offset = 0;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_alloc: bad pbuf layer"</span>, 0);</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  </div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">switch</span> (<a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>) {</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>:</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">/* allocate head of pbuf chain into p */</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  p = (<span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_PBUF_POOL);</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_alloc: allocated pbuf %p\n"</span>, (<span class="keywordtype">void</span> *)p));</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span> (p == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <a class="code" href="pbuf_8c.html#aed70c61e971683736c569a1a99b76569">PBUF_POOL_IS_EMPTY</a>();</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  }</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  p->type = <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  p->next = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="comment">/* make the payload pointer point 'offset' bytes into pbuf data memory */</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  p->payload = <a class="code" href="group__compiler__abstraction.html#gaa8e8724eb1c220cbbb90de9e175ce1dc">LWIP_MEM_ALIGN</a>((<span class="keywordtype">void</span> *)((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p + (<a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a> + offset)));</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_alloc: pbuf p->payload properly aligned"</span>,</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  ((<a class="code" href="group__compiler__abstraction.html#gaf019cbb71af10dcfda7758b21e655307">mem_ptr_t</a>)p->payload % <a class="code" href="lwipopts_8h.html#a97343214666ee6dcb18c0bd77b441ea7">MEM_ALIGNMENT</a>) == 0);</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="comment">/* the total length of the pbuf chain is the requested size */</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  p->tot_len = length;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">/* set the length of the first pbuf in the chain */</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  p->len = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(length, <a class="code" href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f">PBUF_POOL_BUFSIZE_ALIGNED</a> - <a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(offset));</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"check p->payload + p->len does not overflow pbuf"</span>,</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)p->payload + p->len <=</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)p + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a> + <a class="code" href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f">PBUF_POOL_BUFSIZE_ALIGNED</a>));</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"PBUF_POOL_BUFSIZE must be bigger than MEM_ALIGNMENT"</span>,</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  (<a class="code" href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f">PBUF_POOL_BUFSIZE_ALIGNED</a> - <a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(offset)) > 0 );</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="comment">/* set reference count (needed here in case we fail) */</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  p->ref = 1;</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">/* now allocate the tail of the pbuf chain */</span></div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  </div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="comment">/* remember first pbuf for linkage in next iteration */</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  r = p;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="comment">/* remaining length to be allocated */</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  rem_len = length - p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">/* any remaining pbufs to be allocated? */</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">while</span> (rem_len > 0) {</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  q = (<span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_PBUF_POOL);</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">if</span> (q == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <a class="code" href="pbuf_8c.html#aed70c61e971683736c569a1a99b76569">PBUF_POOL_IS_EMPTY</a>();</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">/* free chain so far allocated */</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">/* bail out unsuccessfully */</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</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>  q-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> = <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  q-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a> = 0;</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="comment">/* make previous pbuf point to this pbuf */</span></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  r-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> = q;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="comment">/* set total length of this pbuf and next in chain */</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"rem_len < max_u16_t"</span>, rem_len < 0xffff);</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)rem_len;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">/* this pbuf length is pool size, unless smaller sized tail */</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>((<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)rem_len, <a class="code" href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f">PBUF_POOL_BUFSIZE_ALIGNED</a>);</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> = (<span class="keywordtype">void</span> *)((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)q + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a>);</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_alloc: pbuf q->payload properly aligned"</span>,</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  ((<a class="code" href="group__compiler__abstraction.html#gaf019cbb71af10dcfda7758b21e655307">mem_ptr_t</a>)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> % <a class="code" href="lwipopts_8h.html#a97343214666ee6dcb18c0bd77b441ea7">MEM_ALIGNMENT</a>) == 0);</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"check p->payload + p->len does not overflow pbuf"</span>,</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)p->payload + p->len <=</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)p + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a> + <a class="code" href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f">PBUF_POOL_BUFSIZE_ALIGNED</a>));</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  q-><a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a> = 1;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="comment">/* calculate remaining length to be allocated */</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  rem_len -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">/* remember this pbuf for linkage in next iteration */</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  r = q;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  }</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="comment">/* end of chain */</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">/*r->next = NULL;*/</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>:</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  {</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <a class="code" href="mem_8h.html#a49bff6e5dd4cb95fe6dc0670962bbf54">mem_size_t</a> alloc_len = <a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(<a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a> + offset) + <a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(length);</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  </div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="comment">/* bug #50040: Check for integer overflow when calculating alloc_len */</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">if</span> (alloc_len < <a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(length)) {</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  }</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  </div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="comment">/* If pbuf is to be allocated in RAM, allocate memory for it. */</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  p = (<span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>*)<a class="code" href="mem_8h.html#a932aa40d85b14cb7331625e012d12335">mem_malloc</a>(alloc_len);</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  }</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  </div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordflow">if</span> (p == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  }</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="comment">/* Set up internal structure of the pbuf. */</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  p->payload = <a class="code" href="group__compiler__abstraction.html#gaa8e8724eb1c220cbbb90de9e175ce1dc">LWIP_MEM_ALIGN</a>((<span class="keywordtype">void</span> *)((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a> + offset));</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  p->len = p->tot_len = length;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  p->next = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  p->type = <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  </div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_alloc: pbuf->payload properly aligned"</span>,</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  ((<a class="code" href="group__compiler__abstraction.html#gaf019cbb71af10dcfda7758b21e655307">mem_ptr_t</a>)p->payload % <a class="code" href="lwipopts_8h.html#a97343214666ee6dcb18c0bd77b441ea7">MEM_ALIGNMENT</a>) == 0);</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">/* pbuf references existing (non-volatile static constant) ROM payload? */</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a>:</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">/* pbuf references existing (externally allocated) RAM payload? */</span></div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a>:</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="comment">/* only allocate memory for the pbuf structure */</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  p = (<span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_PBUF);</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">if</span> (p == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  (<span class="stringliteral">"pbuf_alloc: Could not allocate MEMP_PBUF for PBUF_%s.\n"</span>,</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  (<a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a>) ? <span class="stringliteral">"ROM"</span> : <span class="stringliteral">"REF"</span>));</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  }</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">/* caller must set this field properly, afterwards */</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  p->payload = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  p->len = p->tot_len = length;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  p->next = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  p->type = <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_alloc: erroneous type"</span>, 0);</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  }</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="comment">/* set reference count */</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  p-><a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a> = 1;</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">/* set flags */</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  p-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a> = 0;</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_alloc(length=%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">") == %p\n"</span>, length, (<span class="keywordtype">void</span> *)p));</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordflow">return</span> p;</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> }</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  </div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="preprocessor">#if LWIP_SUPPORT_CUSTOM_PBUF</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  </div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>*</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> pbuf_alloced_custom(<a class="code" href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a> l, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> length, <a class="code" href="group__pbuf.html#gab7e0e32fcc292c0d7107721766ed92fb">pbuf_type</a> <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>, <span class="keyword">struct</span> pbuf_custom *p,</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordtype">void</span> *payload_mem, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> payload_mem_len)</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>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_alloced_custom(length=%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, length));</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="comment">/* determine header offset */</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="keywordflow">switch</span> (l) {</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a>:</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="comment">/* add room for transport (often TCP) layer header */</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a> + <a class="code" href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a> + <a class="code" href="pbuf_8h.html#aae0fea237167bb06ea4dc5333df5b0a7">PBUF_IP_HLEN</a> + <a class="code" href="pbuf_8h.html#af9da2e1ca60dc0c584938ccc5d662307">PBUF_TRANSPORT_HLEN</a>;</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfafcc1e506061ba69dfa142eb6b3da5f13">PBUF_IP</a>:</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">/* add room for IP layer header */</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a> + <a class="code" href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a> + <a class="code" href="pbuf_8h.html#aae0fea237167bb06ea4dc5333df5b0a7">PBUF_IP_HLEN</a>;</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfab4de441e737330558b609a990cd17346">PBUF_LINK</a>:</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="comment">/* add room for link layer header */</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a> + <a class="code" href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a>;</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa0ff039585f05f9208bcb66c2d37783e2">PBUF_RAW_TX</a>:</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="comment">/* add room for encapsulating link layer headers (e.g. 802.11) */</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  offset = <a class="code" href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a>;</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">case</span> <a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a>:</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  offset = 0;</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">break</span>;</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>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_alloced_custom: bad pbuf layer"</span>, 0);</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  }</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>  <span class="keywordflow">if</span> (<a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(offset) + length > payload_mem_len) {</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>, (<span class="stringliteral">"pbuf_alloced_custom(length=%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">") buffer too short\n"</span>, length));</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  </div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  p->pbuf.next = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">if</span> (payload_mem != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  p->pbuf.payload = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)payload_mem + <a class="code" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(offset);</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  p->pbuf.payload = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  }</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  p->pbuf.flags = <a class="code" href="pbuf_8h.html#af78a7e1815dc0e31884d095b666d997f">PBUF_FLAG_IS_CUSTOM</a>;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  p->pbuf.len = p->pbuf.tot_len = length;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  p->pbuf.type = <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  p->pbuf.ref = 1;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">return</span> &p->pbuf;</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> }</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_SUPPORT_CUSTOM_PBUF */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  </div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d"> 493</a></span> <a class="code" href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> new_len)</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> {</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> rem_len; <span class="comment">/* remaining length */</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <a class="code" href="group__compiler__abstraction.html#ga10f9a3d7baef58ccc23228c3bd29c1fb">s32_t</a> grow;</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>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_realloc: p != NULL"</span>, p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_realloc: sane p->type"</span>, p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a> ||</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a> ||</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a> ||</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a>);</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="comment">/* desired length larger than current length? */</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">if</span> (new_len >= p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>) {</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="comment">/* enlarging not yet supported */</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="keywordflow">return</span>;</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>  </div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="comment">/* the pbuf chain grows by (new_len - p->tot_len) bytes</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> <span class="comment"> * (which may be negative in case of shrinking) */</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  grow = new_len - p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  </div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="comment">/* first, step over any pbufs that should remain in the chain */</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  rem_len = new_len;</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  q = p;</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="comment">/* should this pbuf be kept? */</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordflow">while</span> (rem_len > q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) {</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="comment">/* decrease remaining length by pbuf length */</span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  rem_len -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="comment">/* decrease total length indicator */</span></div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"grow < max_u16_t"</span>, grow < 0xffff);</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> += (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)grow;</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="comment">/* proceed to next pbuf in chain */</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  q = q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_realloc: q != NULL"</span>, q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  }</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">/* we have now reached the new last pbuf (in q) */</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="comment">/* rem_len == desired length for pbuf q */</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  </div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="comment">/* shrink allocated memory for PBUF_RAM */</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="comment">/* (other types merely adjust their length fields */</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="keywordflow">if</span> ((q-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>) && (rem_len != q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span> #<span class="keywordflow">if</span> <a class="code" href="pbuf_8h.html#a64174c5169b48dc17674324afd9c63b9">LWIP_SUPPORT_CUSTOM_PBUF</a></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  && ((q-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a> & <a class="code" href="pbuf_8h.html#af78a7e1815dc0e31884d095b666d997f">PBUF_FLAG_IS_CUSTOM</a>) == 0)</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> #endif <span class="comment">/* LWIP_SUPPORT_CUSTOM_PBUF */</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  ) {</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="comment">/* reallocate and adjust the length of the pbuf that will be split */</span></div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  q = (<span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *)<a class="code" href="mem_8h.html#a5e39a108c44d8a72df0b30a117cb62e4">mem_trim</a>(q, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> - (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)q) + rem_len);</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"mem_trim returned q == NULL"</span>, q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</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>  <span class="comment">/* adjust length fields for new last pbuf */</span></div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> = rem_len;</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> = q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  </div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="comment">/* any remaining pbufs in chain? */</span></div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">if</span> (q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="comment">/* free remaining pbufs in chain */</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>);</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  }</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="comment">/* q is last packet in chain */</span></div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  </div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span> }</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  </div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> pbuf_header_impl(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> header_size_increment, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> force)</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> {</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keywordtype">void</span> *<a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> increment_magnitude;</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>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p != NULL"</span>, p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="keywordflow">if</span> ((header_size_increment == 0) || (p == <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> 0;</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>  <span class="keywordflow">if</span> (header_size_increment < 0) {</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  increment_magnitude = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)-header_size_increment;</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="comment">/* Check that we aren't going to move off the end of the pbuf */</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"increment_magnitude <= p->len"</span>, (increment_magnitude <= p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>), <span class="keywordflow">return</span> 1;);</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  increment_magnitude = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)header_size_increment;</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="comment">/* Can't assert these as some callers speculatively call</span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> <span class="comment"> pbuf_header() to see if it's OK. Will return 1 below instead. */</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">/* Check that we've got the correct type of pbuf to work with */</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p->type == PBUF_RAM || p->type == PBUF_POOL"</span>,</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a> || p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>);</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="comment">/* Check that we aren't going to move off the beginning of the pbuf */</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p->payload - increment_magnitude >= p + SIZEOF_STRUCT_PBUF"</span>,</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> - increment_magnitude >= (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a>);</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  }</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>  <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> = p-><a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="comment">/* remember current payload pointer */</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> = p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  </div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="comment">/* pbuf types containing payloads? */</span></div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="keywordflow">if</span> (<a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a> || <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>) {</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="comment">/* set new payload pointer */</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> - header_size_increment;</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="comment">/* boundary check fails? */</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  if ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> < (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a>) {</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>( <a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>,</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  (<span class="stringliteral">"pbuf_header: failed as %p < %p (not enough space for new header size)\n"</span>,</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  (<span class="keywordtype">void</span> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>, (<span class="keywordtype">void</span> *)((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p + <a class="code" href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a>)));</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="comment">/* restore old payload pointer */</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> = <a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="comment">/* bail out unsuccessfully */</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="comment">/* pbuf types referring to external payloads? */</span></div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a> || <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a>) {</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="comment">/* hide a header in the payload? */</span></div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordflow">if</span> ((header_size_increment < 0) && (increment_magnitude <= p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="comment">/* increase payload pointer */</span></div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> - header_size_increment;</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((header_size_increment > 0) && force) {</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> = (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a> - header_size_increment;</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="comment">/* cannot expand payload to front (yet!)</span></div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span> <span class="comment"> * bail out unsuccessfully */</span></div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  }</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="comment">/* Unknown type */</span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"bad pbuf type"</span>, 0);</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  }</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  <span class="comment">/* modify pbuf length fields */</span></div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> += header_size_increment;</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> += header_size_increment;</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  </div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_header: old %p new %p (%"</span><a class="code" href="group__compiler__abstraction.html#gac05a82d37afb251470f5e17ca15ab6e9">S16_F</a><span class="stringliteral">")\n"</span>,</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  (<span class="keywordtype">void</span> *)<a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>, (<span class="keywordtype">void</span> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>, header_size_increment));</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  </div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span> }</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  </div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l00665"></a><span class="lineno"><a class="line" href="pbuf_8c.html#a0f81deff4a0e6e8e0ff161a7b9871449"> 665</a></span> <a class="code" href="pbuf_8c.html#a0f81deff4a0e6e8e0ff161a7b9871449">pbuf_header</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> header_size_increment)</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span> {</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordflow">return</span> pbuf_header_impl(p, header_size_increment, 0);</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span> }</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  </div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l00675"></a><span class="lineno"><a class="line" href="pbuf_8c.html#ad0e64d6fbc423593461063da97da9ce6"> 675</a></span> <a class="code" href="pbuf_8c.html#ad0e64d6fbc423593461063da97da9ce6">pbuf_header_force</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> header_size_increment)</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span> {</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="keywordflow">return</span> pbuf_header_impl(p, header_size_increment, 1);</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span> }</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  </div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l00715"></a><span class="lineno"><a class="line" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b"> 715</a></span> <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p)</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span> {</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a>;</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q;</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> count;</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>  <span class="keywordflow">if</span> (p == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p != NULL"</span>, p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="comment">/* if assertions are disabled, proceed with debug output */</span></div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  (<span class="stringliteral">"pbuf_free(p == NULL) was called.\n"</span>));</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  }</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  </div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_free(%p)\n"</span>, (<span class="keywordtype">void</span> *)p));</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <a class="code" href="perf_8h.html#aa1d6977095e51331f65dcfb2b076da52">PERF_START</a>;</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  </div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_free: sane type"</span>, p->type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a> || p->type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a> || p->type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a> || p->type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>);</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>  count = 0;</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="comment">/* de-allocate all consecutive pbufs from the head of the chain that</span></div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span> <span class="comment"> * obtain a zero reference count after decrementing*/</span></div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  </div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">while</span> (p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a>;</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="sys_8h.html#a945395fa326214fc9736487242710a90">SYS_ARCH_DECL_PROTECT</a>(old_level);</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="comment">/* Since decrementing ref cannot be guaranteed to be a single machine operation</span></div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span> <span class="comment"> * we must protect it. We put the new ref into a local variable to prevent</span></div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span> <span class="comment"> * further protection. */</span></div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <a class="code" href="sys_8h.html#a3d0e48feafd378e9c26c64567ecd8bab">SYS_ARCH_PROTECT</a>(old_level);</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="comment">/* all pbufs in a chain are referenced at least once */</span></div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <span class="keywordflow">if</span> (<a class="code" href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="structtaskStruct.html#a30966587a60db6b40c8be6c387e11d81">id</a> == 4)</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_free: p->ref > 0"</span>, p->ref > 0);</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="comment">/* decrease reference count (number of pointers to pbuf) */</span></div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a> = --(p->ref);</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="sys_8h.html#a2f48e97047945642ddeb27e65bf4ffe2">SYS_ARCH_UNPROTECT</a>(old_level);</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <span class="comment">/* this pbuf is no longer referenced to? */</span></div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <span class="keywordflow">if</span> (<a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a> == 0) {</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="comment">/* remember next pbuf in chain for next iteration */</span></div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  q = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>( <a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_free: deallocating %p\n"</span>, (<span class="keywordtype">void</span> *)p));</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <a class="code" href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">type</a> = p->type;</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span> <span class="preprocessor">#if LWIP_SUPPORT_CUSTOM_PBUF</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="comment">/* is this a custom pbuf? */</span></div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keywordflow">if</span> ((p->flags & <a class="code" href="pbuf_8h.html#af78a7e1815dc0e31884d095b666d997f">PBUF_FLAG_IS_CUSTOM</a>) != 0) {</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keyword">struct </span>pbuf_custom *pc = (<span class="keyword">struct </span>pbuf_custom*)p;</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pc->custom_free_function != NULL"</span>, pc->custom_free_function != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  pc->custom_free_function(p);</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_SUPPORT_CUSTOM_PBUF */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  {</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="comment">/* is this a pbuf from the pool? */</span></div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keywordflow">if</span> (type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>) {</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_PBUF_POOL, p);</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="comment">/* is this a ROM or RAM referencing pbuf? */</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a> || type == <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a>) {</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_PBUF, p);</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="comment">/* type == PBUF_RAM */</span></div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <a class="code" href="mem_8h.html#a2fd7aa1adf6e394d3be7c7734e7df41a">mem_free</a>(p);</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  }</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  }</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  count++;</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="comment">/* proceed to next pbuf */</span></div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  p = q;</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="comment">/* p->ref > 0, this pbuf is still referenced to */</span></div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <span class="comment">/* (and so the remaining pbufs in chain as well) */</span></div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>( <a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_free: %p has ref %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">", ending here.\n"</span>, (<span class="keywordtype">void</span> *)p, ref));</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  <span class="comment">/* stop walking through the chain */</span></div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  p = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  }</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  }</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <a class="code" href="perf_8h.html#a8ac3afe5d720793a229fbf70a78eb82f">PERF_STOP</a>(<span class="stringliteral">"pbuf_free"</span>);</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="comment">/* return number of de-allocated pbufs */</span></div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <span class="keywordflow">return</span> count;</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span> }</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  </div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l00801"></a><span class="lineno"><a class="line" href="pbuf_8c.html#a5df7ac5ae59012fe9aeddba375a72190"> 801</a></span> <a class="code" href="pbuf_8c.html#a5df7ac5ae59012fe9aeddba375a72190">pbuf_clen</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p)</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span> {</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> len;</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  </div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  len = 0;</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <span class="keywordflow">while</span> (p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  ++len;</div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  p = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  }</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <span class="keywordflow">return</span> len;</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span> }</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  </div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00821"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga77f6bbd69e45e542014d9c547c7da74e"> 821</a></span> <a class="code" href="group__pbuf.html#ga77f6bbd69e45e542014d9c547c7da74e">pbuf_ref</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p)</div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span> {</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="comment">/* pbuf given? */</span></div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <span class="keywordflow">if</span> (p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <a class="code" href="sys_8h.html#acc5f7f8cbd020de628d1e9a0443da4c7">SYS_ARCH_INC</a>(p-><a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a>, 1);</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf ref overflow"</span>, p-><a class="code" href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">ref</a> > 0);</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> }</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  </div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00841"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga82429084fe29015509c9b4a072707cd4"> 841</a></span> <a class="code" href="group__pbuf.html#ga82429084fe29015509c9b4a072707cd4">pbuf_cat</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *h, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *t)</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span> {</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *p;</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  </div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"(h != NULL) && (t != NULL) (programmer violates API)"</span>,</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  ((h != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (t != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)), <span class="keywordflow">return</span>;);</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">/* proceed to last pbuf of chain */</span></div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="keywordflow">for</span> (p = h; p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; p = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>) {</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="comment">/* add total length of second chain to all totals of first chain */</span></div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> += t-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  }</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="comment">/* { p is last pbuf of first h chain, p->next == NULL } */</span></div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p->tot_len == p->len (of last pbuf in chain)"</span>, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> == p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p->next == NULL"</span>, p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="comment">/* add total length of second chain to last pbuf total of first chain */</span></div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> += t-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <span class="comment">/* chain last pbuf of head (p) with first of tail (t) */</span></div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> = t;</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="comment">/* p->next now references t, but the caller will drop its reference to t,</span></div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span> <span class="comment"> * so netto there is no change to the reference count of t.</span></div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span> }</div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  </div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00883"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga831c9a72bda1d3bd4c7b96f5a0e3b891"> 883</a></span> <a class="code" href="group__pbuf.html#ga831c9a72bda1d3bd4c7b96f5a0e3b891">pbuf_chain</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *h, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *t)</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span> {</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <a class="code" href="group__pbuf.html#ga82429084fe29015509c9b4a072707cd4">pbuf_cat</a>(h, t);</div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="comment">/* t is now referenced by h */</span></div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <a class="code" href="group__pbuf.html#ga77f6bbd69e45e542014d9c547c7da74e">pbuf_ref</a>(t);</div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_chain: %p references %p\n"</span>, (<span class="keywordtype">void</span> *)h, (<span class="keywordtype">void</span> *)t));</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>  </div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *</div>
<div class="line"><a name="l00900"></a><span class="lineno"><a class="line" href="pbuf_8c.html#abf3d29c4f43986b4cb5eb314d5b9729d"> 900</a></span> <a class="code" href="pbuf_8c.html#abf3d29c4f43986b4cb5eb314d5b9729d">pbuf_dechain</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p)</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span> {</div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q;</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tail_gone = 1;</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  <span class="comment">/* tail */</span></div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  q = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="comment">/* pbuf has successor in chain? */</span></div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <span class="keywordflow">if</span> (q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  <span class="comment">/* assert tot_len invariant: (p->tot_len == p->len + (p->next? p->next->tot_len: 0) */</span></div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p->tot_len == p->len + q->tot_len"</span>, q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> == p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> - p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="comment">/* enforce invariant if assertion is disabled */</span></div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> = p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> - p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <span class="comment">/* decouple pbuf from remainder */</span></div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <span class="comment">/* total length of pbuf p is its own length only */</span></div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> = p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  <span class="comment">/* q is no longer referenced by p, free it */</span></div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_dechain: unreferencing %p\n"</span>, (<span class="keywordtype">void</span> *)q));</div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  tail_gone = <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(q);</div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <span class="keywordflow">if</span> (tail_gone > 0) {</div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>,</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  (<span class="stringliteral">"pbuf_dechain: deallocated %p (as it is no longer referenced)\n"</span>, (<span class="keywordtype">void</span> *)q));</div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  }</div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="comment">/* return remaining tail or NULL if deallocated */</span></div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  }</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  <span class="comment">/* assert tot_len invariant: (p->tot_len == p->len + (p->next? p->next->tot_len: 0) */</span></div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p->tot_len == p->len"</span>, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> == p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keywordflow">return</span> ((tail_gone > 0) ? <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> : q);</div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span> }</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  </div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00949"></a><span class="lineno"><a class="line" href="group__pbuf.html#gaba88511dee3df4b631fde691f421320d"> 949</a></span> <a class="code" href="group__pbuf.html#gaba88511dee3df4b631fde691f421320d">pbuf_copy</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p_to, <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p_from)</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span> {</div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset_to=0, offset_from=0, <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  </div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_copy(%p, %p)\n"</span>,</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  (<span class="keyword">const</span> <span class="keywordtype">void</span>*)p_to, (<span class="keyword">const</span> <span class="keywordtype">void</span>*)p_from));</div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  </div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  <span class="comment">/* is the target big enough to hold the source? */</span></div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_copy: target not big enough to hold source"</span>, ((p_to != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) &&</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  (p_from != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (p_to->tot_len >= p_from->tot_len)), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  </div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  <span class="comment">/* iterate through pbuf chain */</span></div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  <span class="keywordflow">do</span></div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  {</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="comment">/* copy one part of the original chain */</span></div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <span class="keywordflow">if</span> ((p_to->len - offset_to) >= (p_from->len - offset_from)) {</div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="comment">/* complete current p_from fits into current p_to */</span></div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> = p_from->len - offset_from;</div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  <span class="comment">/* current p_from does not fit into current p_to */</span></div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> = p_to->len - offset_to;</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  }</div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)p_to->payload + offset_to, (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)p_from->payload + offset_from, <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  offset_to += <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  offset_from += <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"offset_to <= p_to->len"</span>, offset_to <= p_to-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"offset_from <= p_from->len"</span>, offset_from <= p_from-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  <span class="keywordflow">if</span> (offset_from >= p_from->len) {</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  <span class="comment">/* on to next p_from (if any) */</span></div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  offset_from = 0;</div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  p_from = p_from->next;</div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  }</div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keywordflow">if</span> (offset_to == p_to->len) {</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  <span class="comment">/* on to next p_to (if any) */</span></div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  offset_to = 0;</div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  p_to = p_to->next;</div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"p_to != NULL"</span>, (p_to != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (p_from == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) , <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</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="keywordflow">if</span> ((p_from != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (p_from->len == p_from->tot_len)) {</div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <span class="comment">/* don't copy more than one packet! */</span></div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_copy() does not allow packet queues!"</span>,</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  (p_from->next == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  }</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <span class="keywordflow">if</span> ((p_to != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (p_to->len == p_to->tot_len)) {</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  <span class="comment">/* don't copy more than one packet! */</span></div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_copy() does not allow packet queues!"</span>,</div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  (p_to->next == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  }</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  } <span class="keywordflow">while</span> (p_from);</div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"pbuf_copy: end of chain reached.\n"</span>));</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span> }</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  </div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l01016"></a><span class="lineno"><a class="line" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899"> 1016</a></span> <a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *<a class="code" href="structbuf.html">buf</a>, <span class="keywordtype">void</span> *dataptr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</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>  <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *p;</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> left;</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> buf_copy_len;</div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> copied_total = 0;</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  </div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_copy_partial: invalid buf"</span>, (<a class="code" href="structbuf.html">buf</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> 0;);</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_copy_partial: invalid dataptr"</span>, (dataptr != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> 0;);</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  </div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  left = 0;</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  </div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  <span class="keywordflow">if</span> ((<a class="code" href="structbuf.html">buf</a> == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (dataptr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  }</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  </div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <span class="comment">/* Note some systems use byte copy if dataptr or one of the pbuf payload pointers are unaligned. */</span></div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <span class="keywordflow">for</span> (p = <a class="code" href="structbuf.html">buf</a>; <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> != 0 && p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; p = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>) {</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  <span class="keywordflow">if</span> ((offset != 0) && (offset >= p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  <span class="comment">/* don't copy from this buffer -> on to the next */</span></div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  offset -= p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  <span class="comment">/* copy from this buffer. maybe only partially. */</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  buf_copy_len = p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> - offset;</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  <span class="keywordflow">if</span> (buf_copy_len > <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) {</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  buf_copy_len = <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</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>  <span class="comment">/* copy the necessary parts of the buffer */</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>(&((<span class="keywordtype">char</span>*)dataptr)[left], &((<span class="keywordtype">char</span>*)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>)[offset], buf_copy_len);</div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  copied_total += buf_copy_len;</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  left += buf_copy_len;</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> -= buf_copy_len;</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  offset = 0;</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>  }</div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="keywordflow">return</span> copied_total;</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span> }</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  </div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span> <span class="preprocessor">#if LWIP_TCP && TCP_QUEUE_OOSEQ && LWIP_WND_SCALE</span></div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  </div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span> <span class="keywordtype">void</span> pbuf_split_64k(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> **rest)</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span> {</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  *rest = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <span class="keywordflow">if</span> ((p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> tot_len_front = p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *i = p;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *r = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  </div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  <span class="comment">/* continue until the total length (summed up as u16_t) overflows */</span></div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="keywordflow">while</span> ((r != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && ((<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(tot_len_front + r-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) > tot_len_front)) {</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  tot_len_front += r-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  i = r;</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  r = r-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</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>  <span class="comment">/* i now points to last packet of the first segment. Set next</span></div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span> <span class="comment"> pointer to NULL */</span></div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  i-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  </div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  <span class="keywordflow">if</span> (r != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="comment">/* Update the tot_len field in the first part */</span></div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  <span class="keywordflow">for</span> (i = p; i != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; i = i-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>) {</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  i-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> -= r-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"tot_len/len mismatch in last pbuf"</span>,</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  (i-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (i-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> == i-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>));</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  }</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a> & <a class="code" href="pbuf_8h.html#a36a915aa2f6a188baa2862881407971e">PBUF_FLAG_TCP_FIN</a>) {</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  r-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a> |= <a class="code" href="pbuf_8h.html#a36a915aa2f6a188baa2862881407971e">PBUF_FLAG_TCP_FIN</a>;</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>  <span class="comment">/* tot_len field in rest does not need modifications */</span></div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  <span class="comment">/* reference counters do not need modifications */</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  *rest = r;</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  }</div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  }</div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span> }</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_TCP && TCP_QUEUE_OOSEQ && LWIP_WND_SCALE */</span><span class="preprocessor"></span></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> <span class="comment">/* Actual implementation of pbuf_skip() but returning const pointer... */</span></div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>*</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span> pbuf_skip_const(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* in, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> in_offset, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>* out_offset)</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>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset_left = in_offset;</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* q = in;</div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  </div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  <span class="comment">/* get the correct pbuf */</span></div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  <span class="keywordflow">while</span> ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> <= offset_left)) {</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  offset_left -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  q = q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  }</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <span class="keywordflow">if</span> (out_offset != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  *out_offset = offset_left;</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>  <span class="keywordflow">return</span> q;</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>  </div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>*</div>
<div class="line"><a name="l01132"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga6a961522d81f0327aaf4d4ee6d96c583"> 1132</a></span> <a class="code" href="group__pbuf.html#ga6a961522d81f0327aaf4d4ee6d96c583">pbuf_skip</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* in, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> in_offset, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>* out_offset)</div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span> {</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* out = pbuf_skip_const(in, in_offset, out_offset);</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <span class="keywordflow">return</span> <a class="code" href="group__compiler__abstraction.html#gaa0dd3f76dd9a837feaac61fedc0dbe72">LWIP_CONST_CAST</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>*, out);</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span> }</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  </div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01150"></a><span class="lineno"><a class="line" href="group__pbuf.html#gad1e31e370271335b197272af2724ca85"> 1150</a></span> <a class="code" href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *<a class="code" href="structbuf.html">buf</a>, <span class="keyword">const</span> <span class="keywordtype">void</span> *dataptr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)</div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span> {</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *p;</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> buf_copy_len;</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> total_copy_len = <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> copied_total = 0;</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  </div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_take: invalid buf"</span>, (<a class="code" href="structbuf.html">buf</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_take: invalid dataptr"</span>, (dataptr != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;);</div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"pbuf_take: buf not large enough"</span>, (<a class="code" href="structbuf.html">buf</a>->tot_len >= <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;);</div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  </div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="keywordflow">if</span> ((<a class="code" href="structbuf.html">buf</a> == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (dataptr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (<a class="code" href="structbuf.html">buf</a>->tot_len < <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  }</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  </div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  <span class="comment">/* Note some systems use byte copy if dataptr or one of the pbuf payload pointers are unaligned. */</span></div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  <span class="keywordflow">for</span> (p = <a class="code" href="structbuf.html">buf</a>; total_copy_len != 0; p = p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>) {</div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_take: invalid pbuf"</span>, p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  buf_copy_len = total_copy_len;</div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <span class="keywordflow">if</span> (buf_copy_len > p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) {</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <span class="comment">/* this pbuf cannot hold all remaining data */</span></div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  buf_copy_len = p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</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>  <span class="comment">/* copy the necessary parts of the buffer */</span></div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>(p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>, &((<span class="keyword">const</span> <span class="keywordtype">char</span>*)dataptr)[copied_total], buf_copy_len);</div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  total_copy_len -= buf_copy_len;</div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  copied_total += buf_copy_len;</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  }</div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"did not copy all data"</span>, total_copy_len == 0 && copied_total == <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span> }</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  </div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01194"></a><span class="lineno"><a class="line" href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44"> 1194</a></span> <a class="code" href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44">pbuf_take_at</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *<a class="code" href="structbuf.html">buf</a>, <span class="keyword">const</span> <span class="keywordtype">void</span> *dataptr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span> {</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> target_offset;</div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* q = <a class="code" href="group__pbuf.html#ga6a961522d81f0327aaf4d4ee6d96c583">pbuf_skip</a>(<a class="code" href="structbuf.html">buf</a>, offset, &target_offset);</div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  </div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="comment">/* return requested data if pbuf is OK */</span></div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  <span class="keywordflow">if</span> ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> >= target_offset + <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> remaining_len = <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  <span class="keyword">const</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>* src_ptr = (<span class="keyword">const</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)dataptr;</div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  <span class="comment">/* copy the part that goes into the first pbuf */</span></div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> first_copy_len = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> - target_offset, <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>(((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>) + target_offset, dataptr, first_copy_len);</div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  remaining_len -= first_copy_len;</div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  src_ptr += first_copy_len;</div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  <span class="keywordflow">if</span> (remaining_len > 0) {</div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  <span class="keywordflow">return</span> <a class="code" href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a>(q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>, src_ptr, remaining_len);</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  }</div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  }</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span> }</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  </div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>*</div>
<div class="line"><a name="l01230"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga54ac7b116c6f53c704cbf74f35a8b35c"> 1230</a></span> <a class="code" href="group__pbuf.html#ga54ac7b116c6f53c704cbf74f35a8b35c">pbuf_coalesce</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a> layer)</div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span> {</div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q;</div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a> == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <span class="keywordflow">return</span> p;</div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  }</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  q = <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(layer, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>, <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>);</div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  <span class="keywordflow">if</span> (q == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  <span class="comment">/* @todo: what do we do now? */</span></div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  <span class="keywordflow">return</span> p;</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>  err = <a class="code" href="group__pbuf.html#gaba88511dee3df4b631fde691f421320d">pbuf_copy</a>(q, p);</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(err); <span class="comment">/* in case of LWIP_NOASSERT */</span></div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_copy failed"</span>, err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>);</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  <span class="keywordflow">return</span> q;</div>
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span> }</div>
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  </div>
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY</span></div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  </div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span> pbuf_fill_chksum(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> start_offset, <span class="keyword">const</span> <span class="keywordtype">void</span> *dataptr,</div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> *chksum)</div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span> {</div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> acc;</div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> copy_chksum;</div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  <span class="keywordtype">char</span> *dst_ptr;</div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"p != NULL"</span>, p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dataptr != NULL"</span>, dataptr != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"chksum != NULL"</span>, chksum != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"len != 0"</span>, <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> != 0);</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  </div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  <span class="keywordflow">if</span> ((start_offset >= p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>) || (start_offset + <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> > p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</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>  dst_ptr = ((<span class="keywordtype">char</span>*)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>) + start_offset;</div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  copy_chksum = LWIP_CHKSUM_COPY(dst_ptr, dataptr, <a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>);</div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  <span class="keywordflow">if</span> ((start_offset & 1) != 0) {</div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  copy_chksum = <a class="code" href="inet__chksum_8h.html#a0196bd603262882d16b5264b52eafe18">SWAP_BYTES_IN_WORD</a>(copy_chksum);</div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  }</div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  acc = *chksum;</div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  acc += copy_chksum;</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  *chksum = <a class="code" href="inet__chksum_8h.html#a6ffe83b4bdd1784a0671ee4778966a01">FOLD_U32T</a>(acc);</div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</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> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  </div>
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l01300"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga6d803d9945bffb7ad97743f2fa503da6"> 1300</a></span> <a class="code" href="group__pbuf.html#ga6d803d9945bffb7ad97743f2fa503da6">pbuf_get_at</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</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="keywordtype">int</span> ret = <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(p, offset);</div>
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <span class="keywordflow">if</span> (ret >= 0) {</div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  <span class="keywordflow">return</span> (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)ret;</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>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span> }</div>
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  </div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l01318"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad"> 1318</a></span> <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset)</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span> {</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> q_idx;</div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* q = pbuf_skip_const(p, offset, &q_idx);</div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  </div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  <span class="comment">/* return requested data if pbuf is OK */</span></div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  <span class="keywordflow">if</span> ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> > q_idx)) {</div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  <span class="keywordflow">return</span> ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>)[q_idx];</div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  }</div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span> }</div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  </div>
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01340"></a><span class="lineno"><a class="line" href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f"> 1340</a></span> <a class="code" href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f">pbuf_put_at</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> data)</div>
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span> {</div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> q_idx;</div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* q = <a class="code" href="group__pbuf.html#ga6a961522d81f0327aaf4d4ee6d96c583">pbuf_skip</a>(p, offset, &q_idx);</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  </div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  <span class="comment">/* write requested data if pbuf is OK */</span></div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  <span class="keywordflow">if</span> ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> > q_idx)) {</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  ((<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>)[q_idx] = data;</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> }</div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  </div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l01363"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga2170ccbbb13238380dbb203ee1b85974"> 1363</a></span> <a class="code" href="group__pbuf.html#ga2170ccbbb13238380dbb203ee1b85974">pbuf_memcmp</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset, <span class="keyword">const</span> <span class="keywordtype">void</span>* s2, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> n)</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>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> start = offset;</div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* q = p;</div>
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> i;</div>
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  </div>
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  <span class="comment">/* pbuf long enough to perform check? */</span></div>
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  <span class="keywordflow">if</span>(p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> < (offset + n)) {</div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  <span class="keywordflow">return</span> 0xffff;</div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  }</div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  </div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  <span class="comment">/* get the correct pbuf from chain. We know it succeeds because of p->tot_len check above. */</span></div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  <span class="keywordflow">while</span> ((q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) && (q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> <= start)) {</div>
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  start -= q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>;</div>
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  q = q-><a class="code" href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">next</a>;</div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  }</div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  </div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  <span class="comment">/* return requested data if pbuf is OK */</span></div>
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  <span class="keywordflow">for</span> (i = 0; i < n; i++) {</div>
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  <span class="comment">/* We know pbuf_get_at() succeeds because of p->tot_len check above. */</span></div>
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> a = <a class="code" href="group__pbuf.html#ga6d803d9945bffb7ad97743f2fa503da6">pbuf_get_at</a>(q, start + i);</div>
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> b = ((<span class="keyword">const</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>*)s2)[i];</div>
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  <span class="keywordflow">if</span> (a != b) {</div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  <span class="keywordflow">return</span> i+1;</div>
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  }</div>
<div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  }</div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span> }</div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  </div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l01405"></a><span class="lineno"><a class="line" href="group__pbuf.html#ga18c164a6e4a24d89ea9eb7571a886448"> 1405</a></span> <a class="code" href="group__pbuf.html#ga18c164a6e4a24d89ea9eb7571a886448">pbuf_memfind</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <span class="keyword">const</span> <span class="keywordtype">void</span>* <a class="code" href="structmem.html">mem</a>, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> mem_len, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> start_offset)</div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span> {</div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> i;</div>
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> max = p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> - mem_len;</div>
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> >= mem_len + start_offset) {</div>
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  <span class="keywordflow">for</span> (i = start_offset; i <= max; i++) {</div>
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> plus = <a class="code" href="group__pbuf.html#ga2170ccbbb13238380dbb203ee1b85974">pbuf_memcmp</a>(p, i, <a class="code" href="structmem.html">mem</a>, mem_len);</div>
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  <span class="keywordflow">if</span> (plus == 0) {</div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  <span class="keywordflow">return</span> i;</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>  }</div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  }</div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span> }</div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  </div>
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l01432"></a><span class="lineno"><a class="line" href="pbuf_8c.html#a9ba3f7b705309ceadb147692fd5a1c7d"> 1432</a></span> <a class="code" href="pbuf_8c.html#a9ba3f7b705309ceadb147692fd5a1c7d">pbuf_strstr</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <span class="keyword">const</span> <span class="keywordtype">char</span>* substr)</div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span> {</div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  <span class="keywordtype">size_t</span> substr_len;</div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  <span class="keywordflow">if</span> ((substr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (substr[0] == 0) || (p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> == 0xFFFF)) {</div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  <span class="keywordflow">return</span> 0xFFFF;</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>  substr_len = <a class="code" href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a>(substr);</div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  <span class="keywordflow">if</span> (substr_len >= 0xFFFF) {</div>
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  }</div>
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  <span class="keywordflow">return</span> <a class="code" href="group__pbuf.html#ga18c164a6e4a24d89ea9eb7571a886448">pbuf_memfind</a>(p, substr, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)substr_len, 0);</div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span> }</div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="agroup__pbuf_html_ga18c164a6e4a24d89ea9eb7571a886448"><div class="ttname"><a href="group__pbuf.html#ga18c164a6e4a24d89ea9eb7571a886448">pbuf_memfind</a></div><div class="ttdeci">u16_t pbuf_memfind(const struct pbuf *p, const void *mem, u16_t mem_len, u16_t start_offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01405">pbuf.c:1405</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00123">pbuf.h:123</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga6a961522d81f0327aaf4d4ee6d96c583"><div class="ttname"><a href="group__pbuf.html#ga6a961522d81f0327aaf4d4ee6d96c583">pbuf_skip</a></div><div class="ttdeci">struct pbuf * pbuf_skip(struct pbuf *in, u16_t in_offset, u16_t *out_offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01132">pbuf.c:1132</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga839f342803b0cf89049744124c5a98ad"><div class="ttname"><a href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a></div><div class="ttdeci">int pbuf_try_get_at(const struct pbuf *p, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01318">pbuf.c:1318</a></div></div>
<div class="ttc" id="apbuf_8h_html_af78a7e1815dc0e31884d095b666d997f"><div class="ttname"><a href="pbuf_8h.html#af78a7e1815dc0e31884d095b666d997f">PBUF_FLAG_IS_CUSTOM</a></div><div class="ttdeci">#define PBUF_FLAG_IS_CUSTOM</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00131">pbuf.h:131</a></div></div>
<div class="ttc" id="asys_8h_html"><div class="ttname"><a href="sys_8h.html">sys.h</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="aopt_8h_html"><div class="ttname"><a href="opt_8h.html">opt.h</a></div></div>
<div class="ttc" id="astructpbuf_html_a6f82449625e36e294f5d210268c0703f"><div class="ttname"><a href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">pbuf::len</a></div><div class="ttdeci">u16_t len</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00159">pbuf.h:159</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfab4de441e737330558b609a990cd17346"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfab4de441e737330558b609a990cd17346">PBUF_LINK</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00085">pbuf.h:85</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="asys_8h_html_a24ff55288a4d9fa28100c78b2f4612f6"><div class="ttname"><a href="sys_8h.html#a24ff55288a4d9fa28100c78b2f4612f6">SYS_ARCH_SET</a></div><div class="ttdeci">#define SYS_ARCH_SET(var, val)</div><div class="ttdef"><b>Definition:</b> <a href="sys_8h_source.html#l00402">sys.h:402</a></div></div>
<div class="ttc" id="aperf_8h_html_a8ac3afe5d720793a229fbf70a78eb82f"><div class="ttname"><a href="perf_8h.html#a8ac3afe5d720793a229fbf70a78eb82f">PERF_STOP</a></div><div class="ttdeci">#define PERF_STOP(x)</div><div class="ttdef"><b>Definition:</b> <a href="perf_8h_source.html#l00021">perf.h:21</a></div></div>
<div class="ttc" id="astructpbuf_html_a18e2c02942feb1baa3756fcd585b6731"><div class="ttname"><a href="structpbuf.html#a18e2c02942feb1baa3756fcd585b6731">pbuf::ref</a></div><div class="ttdeci">u16_t ref</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00172">pbuf.h:172</a></div></div>
<div class="ttc" id="apbuf_8c_html_aed70c61e971683736c569a1a99b76569"><div class="ttname"><a href="pbuf_8c.html#aed70c61e971683736c569a1a99b76569">PBUF_POOL_IS_EMPTY</a></div><div class="ttdeci">#define PBUF_POOL_IS_EMPTY()</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00135">pbuf.c:135</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="atcpip_8h_html"><div class="ttname"><a href="tcpip_8h.html">tcpip.h</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac120b0fe39efe35bb682e4aa3b82e2c9">PBUF_ROM</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00112">pbuf.h:112</a></div></div>
<div class="ttc" id="apbuf_8h_html"><div class="ttname"><a href="pbuf_8h.html">pbuf.h</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00094">pbuf.h:94</a></div></div>
<div class="ttc" id="apbuf_8c_html_a9ba3f7b705309ceadb147692fd5a1c7d"><div class="ttname"><a href="pbuf_8c.html#a9ba3f7b705309ceadb147692fd5a1c7d">pbuf_strstr</a></div><div class="ttdeci">u16_t pbuf_strstr(const struct pbuf *p, const char *substr)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01432">pbuf.c:1432</a></div></div>
<div class="ttc" id="astructmem_html"><div class="ttname"><a href="structmem.html">mem</a></div><div class="ttdef"><b>Definition:</b> <a href="mem_8c_source.html#l00264">mem.c:264</a></div></div>
<div class="ttc" id="asys_8h_html_a2f48e97047945642ddeb27e65bf4ffe2"><div class="ttname"><a href="sys_8h.html#a2f48e97047945642ddeb27e65bf4ffe2">SYS_ARCH_UNPROTECT</a></div><div class="ttdeci">#define SYS_ARCH_UNPROTECT(lev)</div><div class="ttdef"><b>Definition:</b> <a href="sys_8h_source.html#l00363">sys.h:363</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="aperf_8h_html_aa1d6977095e51331f65dcfb2b076da52"><div class="ttname"><a href="perf_8h.html#aa1d6977095e51331f65dcfb2b076da52">PERF_START</a></div><div class="ttdeci">#define PERF_START</div><div class="ttdef"><b>Definition:</b> <a href="perf_8h_source.html#l00020">perf.h:20</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfafcc1e506061ba69dfa142eb6b3da5f13"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfafcc1e506061ba69dfa142eb6b3da5f13">PBUF_IP</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00080">pbuf.h:80</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="agroup__pbuf_html_gad1e31e370271335b197272af2724ca85"><div class="ttname"><a href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a></div><div class="ttdeci">err_t pbuf_take(struct pbuf *buf, const void *dataptr, u16_t len)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01150">pbuf.c:1150</a></div></div>
<div class="ttc" id="astructpbuf_html_a5e5763c94fd18d78937b0b58ce7df341"><div class="ttname"><a href="structpbuf.html#a5e5763c94fd18d78937b0b58ce7df341">pbuf::next</a></div><div class="ttdeci">struct pbuf * next</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00144">pbuf.h:144</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00076">pbuf.h:76</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gab0dd696fb4b6bc65e548944584f1738b"><div class="ttname"><a href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a></div><div class="ttdeci">u8_t pbuf_free(struct pbuf *p)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00715">pbuf.c:715</a></div></div>
<div class="ttc" id="apbuf_8c_html_a8357a994e45ff94c9494aa55b6c3ecb3"><div class="ttname"><a href="pbuf_8c.html#a8357a994e45ff94c9494aa55b6c3ecb3">SIZEOF_STRUCT_PBUF</a></div><div class="ttdeci">#define SIZEOF_STRUCT_PBUF</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00129">pbuf.c:129</a></div></div>
<div class="ttc" id="alib_8h_html_ae6c8de953239811a34eeeab09458e55e"><div class="ttname"><a href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a></div><div class="ttdeci">int strlen(const char *str)</div><div class="ttdef"><b>Definition:</b> <a href="strlen_8c_source.html#l00055">strlen.c:55</a></div></div>
<div class="ttc" id="apbuf_8h_html_af9da2e1ca60dc0c584938ccc5d662307"><div class="ttname"><a href="pbuf_8h.html#af9da2e1ca60dc0c584938ccc5d662307">PBUF_TRANSPORT_HLEN</a></div><div class="ttdeci">#define PBUF_TRANSPORT_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00061">pbuf.h:61</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__debugging__levels_html_ga988147559b78642ac881815b66023646"><div class="ttname"><a href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a></div><div class="ttdeci">#define LWIP_DBG_TRACE</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00083">debug.h:83</a></div></div>
<div class="ttc" id="amem_8h_html_a2fd7aa1adf6e394d3be7c7734e7df41a"><div class="ttname"><a href="mem_8h.html#a2fd7aa1adf6e394d3be7c7734e7df41a">mem_free</a></div><div class="ttdeci">void mem_free(void *mem)</div><div class="ttdef"><b>Definition:</b> <a href="mem_8c_source.html#l00419">mem.c:419</a></div></div>
<div class="ttc" id="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="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="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="ainet__chksum_8h_html_a0196bd603262882d16b5264b52eafe18"><div class="ttname"><a href="inet__chksum_8h.html#a0196bd603262882d16b5264b52eafe18">SWAP_BYTES_IN_WORD</a></div><div class="ttdeci">#define SWAP_BYTES_IN_WORD(w)</div><div class="ttdef"><b>Definition:</b> <a href="inet__chksum_8h_source.html#l00047">inet_chksum.h:47</a></div></div>
<div class="ttc" id="astructtaskStruct_html_a30966587a60db6b40c8be6c387e11d81"><div class="ttname"><a href="structtaskStruct.html#a30966587a60db6b40c8be6c387e11d81">taskStruct::id</a></div><div class="ttdeci">pidType id</div><div class="ttdef"><b>Definition:</b> <a href="sched_8h_source.html#l00063">sched.h:63</a></div></div>
<div class="ttc" id="astats_8h_html"><div class="ttname"><a href="stats_8h.html">stats.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00065">err.h:65</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gac2f1f58fd36042e82af46f5015720899"><div class="ttname"><a href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a></div><div class="ttdeci">u16_t pbuf_copy_partial(const struct pbuf *buf, void *dataptr, u16_t len, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01016">pbuf.c:1016</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga0269bdc51f1e8a5ecf9af72c6e1c996c"><div class="ttname"><a href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a></div><div class="ttdeci">#define LWIP_DBG_LEVEL_SERIOUS</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00057">debug.h:57</a></div></div>
<div class="ttc" id="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__pbuf_html_gacfcb0a2af918658ba0afe36499c65f47"><div class="ttname"><a href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a></div><div class="ttdeci">struct pbuf * pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00248">pbuf.c:248</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga10f9a3d7baef58ccc23228c3bd29c1fb"><div class="ttname"><a href="group__compiler__abstraction.html#ga10f9a3d7baef58ccc23228c3bd29c1fb">s32_t</a></div><div class="ttdeci">int32_t s32_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00127">arch.h:127</a></div></div>
<div class="ttc" id="apbuf_8c_html_a5df7ac5ae59012fe9aeddba375a72190"><div class="ttname"><a href="pbuf_8c.html#a5df7ac5ae59012fe9aeddba375a72190">pbuf_clen</a></div><div class="ttdeci">u16_t pbuf_clen(const struct pbuf *p)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00801">pbuf.c:801</a></div></div>
<div class="ttc" id="apbuf_8h_html_aae0fea237167bb06ea4dc5333df5b0a7"><div class="ttname"><a href="pbuf_8h.html#aae0fea237167bb06ea4dc5333df5b0a7">PBUF_IP_HLEN</a></div><div class="ttdeci">#define PBUF_IP_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00065">pbuf.h:65</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="agroup__pbuf_html_ga54ac7b116c6f53c704cbf74f35a8b35c"><div class="ttname"><a href="group__pbuf.html#ga54ac7b116c6f53c704cbf74f35a8b35c">pbuf_coalesce</a></div><div class="ttdeci">struct pbuf * pbuf_coalesce(struct pbuf *p, pbuf_layer layer)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01230">pbuf.c:1230</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a35998a3d56af9940e6a80bb372597685"><div class="ttname"><a href="lwipopts_8h.html#a35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a></div><div class="ttdeci">#define PBUF_LINK_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00209">lwipopts.h:209</a></div></div>
<div class="ttc" id="astructbuf_html"><div class="ttname"><a href="structbuf.html">buf</a></div><div class="ttdef"><b>Definition:</b> <a href="buf_8h_source.html#l00035">buf.h:35</a></div></div>
<div class="ttc" id="apbuf_8c_html_ad0e64d6fbc423593461063da97da9ce6"><div class="ttname"><a href="pbuf_8c.html#ad0e64d6fbc423593461063da97da9ce6">pbuf_header_force</a></div><div class="ttdeci">u8_t pbuf_header_force(struct pbuf *p, s16_t header_size_increment)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00675">pbuf.c:675</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="agroup__pbuf_html_gaee1baa59bb2f85ba575b5a8619ac1ebf"><div class="ttname"><a href="group__pbuf.html#gaee1baa59bb2f85ba575b5a8619ac1ebf">pbuf_layer</a></div><div class="ttdeci">pbuf_layer</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00072">pbuf.h:72</a></div></div>
<div class="ttc" id="apbuf_8h_html_a64174c5169b48dc17674324afd9c63b9"><div class="ttname"><a href="pbuf_8h.html#a64174c5169b48dc17674324afd9c63b9">LWIP_SUPPORT_CUSTOM_PBUF</a></div><div class="ttdeci">#define LWIP_SUPPORT_CUSTOM_PBUF</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00055">pbuf.h:55</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga6d803d9945bffb7ad97743f2fa503da6"><div class="ttname"><a href="group__pbuf.html#ga6d803d9945bffb7ad97743f2fa503da6">pbuf_get_at</a></div><div class="ttdeci">u8_t pbuf_get_at(const struct pbuf *p, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01300">pbuf.c:1300</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gaef204be511fd32f681b55abc08e9ae18"><div class="ttname"><a href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a></div><div class="ttdeci">#define LWIP_MEM_ALIGN_SIZE(size)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00221">arch.h:221</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gab7e0e32fcc292c0d7107721766ed92fb"><div class="ttname"><a href="group__pbuf.html#gab7e0e32fcc292c0d7107721766ed92fb">pbuf_type</a></div><div class="ttdeci">pbuf_type</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00101">pbuf.h:101</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga50abfe830a33a1a47a562febee66015d"><div class="ttname"><a href="group__pbuf.html#ga50abfe830a33a1a47a562febee66015d">pbuf_realloc</a></div><div class="ttdeci">void pbuf_realloc(struct pbuf *p, u16_t new_len)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00493">pbuf.c:493</a></div></div>
<div class="ttc" id="asys_8h_html_acc5f7f8cbd020de628d1e9a0443da4c7"><div class="ttname"><a href="sys_8h.html#acc5f7f8cbd020de628d1e9a0443da4c7">SYS_ARCH_INC</a></div><div class="ttdeci">#define SYS_ARCH_INC(var, val)</div><div class="ttdef"><b>Definition:</b> <a href="sys_8h_source.html#l00375">sys.h:375</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gaba88511dee3df4b631fde691f421320d"><div class="ttname"><a href="group__pbuf.html#gaba88511dee3df4b631fde691f421320d">pbuf_copy</a></div><div class="ttdeci">err_t pbuf_copy(struct pbuf *p_to, const struct pbuf *p_from)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00949">pbuf.c:949</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00096">err.h:96</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga70624a5deb8b9199406372a7f3603ecf"><div class="ttname"><a href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a></div><div class="ttdeci">#define LWIP_UNUSED_ARG(x)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00315">arch.h:315</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gae1cf2bf7454ff87ff377b0b2262f9b44"><div class="ttname"><a href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44">pbuf_take_at</a></div><div class="ttdeci">err_t pbuf_take_at(struct pbuf *buf, const void *dataptr, u16_t len, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01194">pbuf.c:1194</a></div></div>
<div class="ttc" id="asys_8h_html_a945395fa326214fc9736487242710a90"><div class="ttname"><a href="sys_8h.html#a945395fa326214fc9736487242710a90">SYS_ARCH_DECL_PROTECT</a></div><div class="ttdeci">#define SYS_ARCH_DECL_PROTECT(lev)</div><div class="ttdef"><b>Definition:</b> <a href="sys_8h_source.html#l00361">sys.h:361</a></div></div>
<div class="ttc" id="asys_8h_html_a3d0e48feafd378e9c26c64567ecd8bab"><div class="ttname"><a href="sys_8h.html#a3d0e48feafd378e9c26c64567ecd8bab">SYS_ARCH_PROTECT</a></div><div class="ttdeci">#define SYS_ARCH_PROTECT(lev)</div><div class="ttdef"><b>Definition:</b> <a href="sys_8h_source.html#l00362">sys.h:362</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a97343214666ee6dcb18c0bd77b441ea7"><div class="ttname"><a href="lwipopts_8h.html#a97343214666ee6dcb18c0bd77b441ea7">MEM_ALIGNMENT</a></div><div class="ttdeci">#define MEM_ALIGNMENT</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00054">lwipopts.h:54</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga831c9a72bda1d3bd4c7b96f5a0e3b891"><div class="ttname"><a href="group__pbuf.html#ga831c9a72bda1d3bd4c7b96f5a0e3b891">pbuf_chain</a></div><div class="ttdeci">void pbuf_chain(struct pbuf *h, struct pbuf *t)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00883">pbuf.c:883</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gaa8e8724eb1c220cbbb90de9e175ce1dc"><div class="ttname"><a href="group__compiler__abstraction.html#gaa8e8724eb1c220cbbb90de9e175ce1dc">LWIP_MEM_ALIGN</a></div><div class="ttdeci">#define LWIP_MEM_ALIGN(addr)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00236">arch.h:236</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 *h, struct pbuf *t)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00841">pbuf.c:841</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00108">pbuf.h:108</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga2170ccbbb13238380dbb203ee1b85974"><div class="ttname"><a href="group__pbuf.html#ga2170ccbbb13238380dbb203ee1b85974">pbuf_memcmp</a></div><div class="ttdeci">u16_t pbuf_memcmp(const struct pbuf *p, u16_t offset, const void *s2, u16_t n)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01363">pbuf.c:1363</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="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfa0ff039585f05f9208bcb66c2d37783e2"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa0ff039585f05f9208bcb66c2d37783e2">PBUF_RAW_TX</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00091">pbuf.h:91</a></div></div>
<div class="ttc" id="amem_8h_html_a5e39a108c44d8a72df0b30a117cb62e4"><div class="ttname"><a href="mem_8h.html#a5e39a108c44d8a72df0b30a117cb62e4">mem_trim</a></div><div class="ttdeci">void * mem_trim(void *mem, mem_size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="mem_8c_source.html#l00478">mem.c:478</a></div></div>
<div class="ttc" id="aarmv6_2sched_8c_html_a54397bfe18d5da4d50ff03b15f540858"><div class="ttname"><a href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a></div><div class="ttdeci">kTask_t * _current</div><div class="ttdef"><b>Definition:</b> <a href="armv6_2sched_8c_source.html#l00050">sched.c:50</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="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="agroup__compiler__abstraction_html_gaf019cbb71af10dcfda7758b21e655307"><div class="ttname"><a href="group__compiler__abstraction.html#gaf019cbb71af10dcfda7758b21e655307">mem_ptr_t</a></div><div class="ttdeci">uintptr_t mem_ptr_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00128">arch.h:128</a></div></div>
<div class="ttc" id="apbuf_8c_html_a3dad81a8286ee8e9a7c70a74f9f4bb0f"><div class="ttname"><a href="pbuf_8c.html#a3dad81a8286ee8e9a7c70a74f9f4bb0f">PBUF_POOL_BUFSIZE_ALIGNED</a></div><div class="ttdeci">#define PBUF_POOL_BUFSIZE_ALIGNED</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00132">pbuf.c:132</a></div></div>
<div class="ttc" id="amem_8h_html_a932aa40d85b14cb7331625e012d12335"><div class="ttname"><a href="mem_8h.html#a932aa40d85b14cb7331625e012d12335">mem_malloc</a></div><div class="ttdeci">void * mem_malloc(mem_size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="mem_8c_source.html#l00603">mem.c:603</a></div></div>
<div class="ttc" id="apbuf_8c_html_abf3d29c4f43986b4cb5eb314d5b9729d"><div class="ttname"><a href="pbuf_8c.html#abf3d29c4f43986b4cb5eb314d5b9729d">pbuf_dechain</a></div><div class="ttdeci">struct pbuf * pbuf_dechain(struct pbuf *p)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00900">pbuf.c:900</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a5c3d44a0ec3bb8bd66f776c70d5c6a6c"><div class="ttname"><a href="lwipopts_8h.html#a5c3d44a0ec3bb8bd66f776c70d5c6a6c">PBUF_DEBUG</a></div><div class="ttdeci">#define PBUF_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00435">lwipopts.h:435</a></div></div>
<div class="ttc" id="alwipopts_8h_html_aa1dd57a66b6de8c0593e9e3e8d1411f6"><div class="ttname"><a href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a></div><div class="ttdeci">#define MEMCPY(dst, src, len)</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00043">lwipopts.h:43</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga77c491e468bf7d9a1bc48430c1866a96"><div class="ttname"><a href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a></div><div class="ttdeci">#define LWIP_DBG_LEVEL_WARNING</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00055">debug.h:55</a></div></div>
<div class="ttc" id="apbuf_8c_html_a0f81deff4a0e6e8e0ff161a7b9871449"><div class="ttname"><a href="pbuf_8c.html#a0f81deff4a0e6e8e0ff161a7b9871449">pbuf_header</a></div><div class="ttdeci">u8_t pbuf_header(struct pbuf *p, s16_t header_size_increment)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00665">pbuf.c:665</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="amem_8h_html_a49bff6e5dd4cb95fe6dc0670962bbf54"><div class="ttname"><a href="mem_8h.html#a49bff6e5dd4cb95fe6dc0670962bbf54">mem_size_t</a></div><div class="ttdeci">u16_t mem_size_t</div><div class="ttdef"><b>Definition:</b> <a href="mem_8h_source.html#l00067">mem.h:67</a></div></div>
<div class="ttc" id="astructpbuf_html_afd7bff5210a022424caa97d2f25fe8e6"><div class="ttname"><a href="structpbuf.html#afd7bff5210a022424caa97d2f25fe8e6">pbuf::type</a></div><div class="ttdeci">u8_t type</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00162">pbuf.h:162</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__pbuf_html_gaf76863707dc02993eae116574b1ea03f"><div class="ttname"><a href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f">pbuf_put_at</a></div><div class="ttdeci">void pbuf_put_at(struct pbuf *p, u16_t offset, u8_t data)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01340">pbuf.c:1340</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="ainet__chksum_8h_html_a6ffe83b4bdd1784a0671ee4778966a01"><div class="ttname"><a href="inet__chksum_8h.html#a6ffe83b4bdd1784a0671ee4778966a01">FOLD_U32T</a></div><div class="ttdeci">#define FOLD_U32T(u)</div><div class="ttdef"><b>Definition:</b> <a href="inet__chksum_8h_source.html#l00052">inet_chksum.h:52</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="alwipopts_8h_html_a6e1ba1875ae5168a17b53d83597bc1de"><div class="ttname"><a href="lwipopts_8h.html#a6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a></div><div class="ttdeci">#define PBUF_LINK_ENCAPSULATION_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00211">lwipopts.h:211</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="agroup__compiler__abstraction_html_gaa0dd3f76dd9a837feaac61fedc0dbe72"><div class="ttname"><a href="group__compiler__abstraction.html#gaa0dd3f76dd9a837feaac61fedc0dbe72">LWIP_CONST_CAST</a></div><div class="ttdeci">#define LWIP_CONST_CAST(target_type, val)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00187">arch.h:187</a></div></div>
<div class="ttc" id="ainet__chksum_8h_html"><div class="ttname"><a href="inet__chksum_8h.html">inet_chksum.h</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac9b6ba960fdea6f2e8f35c8313b77e4e">PBUF_REF</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00116">pbuf.h:116</a></div></div>
<div class="ttc" id="astructpbuf_html_a8d32dc3e964369d4eec638fc37fbc460"><div class="ttname"><a href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">pbuf::payload</a></div><div class="ttdeci">void * payload</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00147">pbuf.h:147</a></div></div>
<div class="ttc" id="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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