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<div class="title">udp.c</div> </div>
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<a href="udp_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="l00013"></a><span class="lineno"> 13</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * Copyright (c) 2001-2004 Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</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="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</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="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">/* @todo Check the use of '(struct udp_pcb).chksum_len_rx'!</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#if LWIP_UDP </span><span class="comment">/* don't build if not configured for use in lwipopts.h */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include "<a class="code" href="udp_8h.html">net/udp.h</a>"</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#include "<a class="code" href="def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#include "<a class="code" href="memp_8h.html">net/memp.h</a>"</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#include "<a class="code" href="inet__chksum_8h.html">net/inet_chksum.h</a>"</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#include "<a class="code" href="ip__addr_8h.html">net/ip_addr.h</a>"</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#include "<a class="code" href="ip6_8h.html">net/ip6.h</a>"</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor">#include "<a class="code" href="ip6__addr_8h.html">net/ip6_addr.h</a>"</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#include "<a class="code" href="netif_8h.html">net/netif.h</a>"</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor">#include "<a class="code" href="icmp_8h.html">net/icmp.h</a>"</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#include "<a class="code" href="icmp6_8h.html">net/icmp6.h</a>"</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor">#include "<a class="code" href="stats_8h.html">net/stats.h</a>"</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#include "<a class="code" href="snmp_8h.html">net/snmp.h</a>"</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#include "<a class="code" href="dhcp_8h.html">net/dhcp.h</a>"</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#ifndef UDP_LOCAL_PORT_RANGE_START</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">/* From http://www.iana.org/assignments/port-numbers:</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> "The Dynamic and/or Private Ports are those from 49152 through 65535" */</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#define UDP_LOCAL_PORT_RANGE_START 0xc000</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#define UDP_LOCAL_PORT_RANGE_END 0xffff</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor">#define UDP_ENSURE_LOCAL_PORT_RANGE(port) ((u16_t)(((port) & ~UDP_LOCAL_PORT_RANGE_START) + UDP_LOCAL_PORT_RANGE_START))</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">/* last local UDP port */</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> udp_port = UDP_LOCAL_PORT_RANGE_START;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">/* The list of UDP PCBs */</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">/* exported in udp.h (was static) */</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">struct </span>udp_pcb *udp_pcbs;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> udp_init(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#if LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS && defined(LWIP_RAND)</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  udp_port = UDP_ENSURE_LOCAL_PORT_RANGE(LWIP_RAND());</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS && defined(LWIP_RAND) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> udp_new_port(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> n = 0;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">struct </span>udp_pcb *pcb;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> again:</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (udp_port++ == UDP_LOCAL_PORT_RANGE_END) {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  udp_port = UDP_LOCAL_PORT_RANGE_START;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">/* Check all PCBs. */</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">for</span> (pcb = udp_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (pcb->local_port == udp_port) {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (++n > (UDP_LOCAL_PORT_RANGE_END - UDP_LOCAL_PORT_RANGE_START)) {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">goto</span> again;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> udp_port;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> udp_input_local_match(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *inp, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> broadcast)</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(inp); <span class="comment">/* in IPv6 only case */</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(broadcast); <span class="comment">/* in IPv6 only case */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">/* Dual-stack: PCBs listening to any IP type also listen to any IP address */</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a83b17dbf7d1faf5c8f8c20b039db8bb8">IP_IS_ANY_TYPE_VAL</a>(pcb->local_ip)) {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor">#if LWIP_IPV4 && IP_SOF_BROADCAST_RECV</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> ((broadcast != 0) && !<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">SOF_BROADCAST</a>)) {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && IP_SOF_BROADCAST_RECV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  }</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">/* Only need to check PCB if incoming IP version matches PCB IP version */</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a81ed1fbe375d867d6e77c83976c07671">IP_ADDR_PCB_VERSION_MATCH_EXACT</a>(pcb, <a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>())) {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">/* Special case: IPv4 broadcast: all or broadcasts in my subnet</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> * Note: broadcast variable can only be 1 if it is an IPv4 broadcast */</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">if</span> (broadcast != 0) {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#if IP_SOF_BROADCAST_RECV</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span> (<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">SOF_BROADCAST</a>))</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#endif </span><span class="comment">/* IP_SOF_BROADCAST_RECV */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">if</span> (ip4_addr_isany(ip_2_ip4(&pcb->local_ip)) ||</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  ((ip4_current_dest_addr()->addr == IPADDR_BROADCAST)) ||</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  ip4_addr_netcmp(ip_2_ip4(&pcb->local_ip), ip4_current_dest_addr(), netif_ip4_netmask(inp))) {</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">/* Handle IPv4 and IPv6: all or exact match */</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(&pcb->local_ip) || <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&pcb->local_ip, <a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>())) {</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  }</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> udp_input(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *inp)</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">struct </span><a class="code" href="structudp__hdr.html">udp_hdr</a> *udphdr;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">struct </span>udp_pcb *pcb, *prev;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">struct </span>udp_pcb *uncon_pcb;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> src, dest;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> broadcast;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> for_us = 0;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(inp);</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="perf_8h.html#aa1d6977095e51331f65dcfb2b076da52">PERF_START</a>;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.recv);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">/* Check minimum length (UDP header) */</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> < <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>) {</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="comment">/* drop short packets */</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>,</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  (<span class="stringliteral">"udp_input: short UDP datagram (%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" bytes) discarded\n"</span>, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>));</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.lenerr);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.drop);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.udpinerrors);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">goto</span> end;</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>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  udphdr = (<span class="keyword">struct </span><a class="code" href="structudp__hdr.html">udp_hdr</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">/* is broadcast packet ? */</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  broadcast = <a class="code" href="ip__addr_8h.html#a11275b39f9b8e876e8124a16410e8840">ip_addr_isbroadcast</a>(<a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>(), <a class="code" href="ip_8h.html#aabecef3c7653a9767c79245c44fcab9f">ip_current_netif</a>());</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_input: received datagram of length %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>));</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  </div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">/* convert src and dest ports to host byte order */</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  src = <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->src);</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  dest = <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->dest);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  udp_debug_print(udphdr);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="comment">/* print the UDP source and destination */</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp ("</span>));</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, <a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>());</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">", %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">") <-- ("</span>, <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->dest)));</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, <a class="code" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>());</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">", %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->src)));</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  pcb = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  prev = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  uncon_pcb = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">/* Iterate through the UDP pcb list for a matching pcb.</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment"> * 'Perfect match' pcbs (connected to the remote port & ip address) are</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment"> * preferred. If no perfect match is found, the first unconnected pcb that</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"> * matches the local port and ip address gets the datagram. */</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">for</span> (pcb = udp_pcbs; pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb = pcb->next) {</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="comment">/* print the PCB local and remote address */</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"pcb ("</span>));</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, &pcb->local_ip);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">", %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">") <-- ("</span>, pcb->local_port));</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, &pcb->remote_ip);</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">", %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, pcb->remote_port));</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">/* compare PCB local addr+port to UDP destination addr+port */</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> ((pcb->local_port == dest) &&</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  (udp_input_local_match(pcb, inp, broadcast) != 0)) {</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span> (((pcb->flags & UDP_FLAGS_CONNECTED) == 0) &&</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  ((uncon_pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#af3822feed320cf8439b083ee525e4942">SO_REUSE</a></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">/* prefer specific IPs over cath-all */</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  || !<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(&pcb->local_ip)</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> #endif <span class="comment">/* SO_REUSE */</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  )) {</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="comment">/* the first unconnected matching PCB */</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  uncon_pcb = pcb;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  }</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="comment">/* compare PCB remote addr+port to UDP source addr+port */</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> ((pcb->remote_port == src) &&</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  (<a class="code" href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a>(pcb->remote_ip) ||</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&pcb->remote_ip, <a class="code" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>()))) {</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">/* the first fully matching PCB */</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">if</span> (prev != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">/* move the pcb to the front of udp_pcbs so that is</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment"> found faster next time */</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  prev->next = pcb->next;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  pcb->next = udp_pcbs;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  udp_pcbs = pcb;</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.cachehit);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  }</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  }</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  }</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  </div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  prev = pcb;</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>  <span class="comment">/* no fully matching pcb found? then look for an unconnected pcb */</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">if</span> (pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  pcb = uncon_pcb;</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  }</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  </div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">/* Check checksum if this is a match or if it was directed at us. */</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  for_us = 1;</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (ip_current_is_v6()) {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  for_us = netif_get_ip6_addr_match(inp, ip6_current_dest_addr()) >= 0;</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="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">if</span> (!ip_current_is_v6()) {</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  for_us = ip4_addr_cmp(netif_ip4_addr(inp), ip4_current_dest_addr());</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  }</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  }</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  </div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">if</span> (for_us) {</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"udp_input: calculating checksum\n"</span>));</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="preprocessor">#if CHECKSUM_CHECK_UDP</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <a class="code" href="netif_8h.html#ad968df1b35c2fae368e087966e3bc677">IF__NETIF_CHECKSUM_ENABLED</a>(inp, <a class="code" href="lwipopts_8h.html#a6747f7b72abe544fd4dc184cc7fcad37">CHECKSUM_CHECK_UDP</a>) {</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="preprocessor">#if LWIP_UDPLITE</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keywordflow">if</span> (ip_current_header_proto() == <a class="code" href="prot_2ip_8h.html#a3ef2b8a1cb4f7acee3142337438dfd0d">IP_PROTO_UDPLITE</a>) {</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">/* Do the UDP Lite checksum */</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chklen = <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->len);</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">if</span> (chklen < <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structudp__hdr.html">udp_hdr</a>)) {</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">if</span> (chklen == 0) {</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="comment">/* For UDP-Lite, checksum length of 0 means checksum</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment"> over the complete packet (See RFC 3828 chap. 3.1) */</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  chklen = p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">/* At least the UDP-Lite header must be covered by the</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="comment"> checksum! (Again, see RFC 3828 chap. 3.1) */</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">goto</span> chkerr;</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  }</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  }</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">if</span> (<a class="code" href="inet__chksum_8h.html#acfe7ab6c63ef998210c66bb4822b03b2">ip_chksum_pseudo_partial</a>(p, <a class="code" href="prot_2ip_8h.html#a3ef2b8a1cb4f7acee3142337438dfd0d">IP_PROTO_UDPLITE</a>,</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>, chklen,</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <a class="code" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>(), <a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>()) != 0) {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">goto</span> chkerr;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_UDPLITE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  {</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">if</span> (udphdr->chksum != 0) {</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span> (<a class="code" href="inet__chksum_8h.html#aa13cda42e7c262f5dee243ff6c28422f">ip_chksum_pseudo</a>(p, <a class="code" href="prot_2ip_8h.html#a76212e7ef71a99646040d2e454388bed">IP_PROTO_UDP</a>, p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>,</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <a class="code" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>(),</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>()) != 0) {</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">goto</span> chkerr;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  }</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  }</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  }</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  }</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="preprocessor">#endif </span><span class="comment">/* CHECKSUM_CHECK_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">if</span> (<a class="code" href="pbuf_8h.html#aaa17c1951cf2d207b6adfd3947d91f00">pbuf_header</a>(p, -<a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>)) {</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">/* Can we cope with this failing? Just assert for now */</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"pbuf_header failed\n"</span>, 0);</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.drop);</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.udpinerrors);</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">goto</span> end;</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  }</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="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.udpindatagrams);</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="preprocessor">#if SO_REUSE && SO_REUSE_RXTOALL</span></div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">if</span> (<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>) &&</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  (broadcast || <a class="code" href="ip__addr_8h.html#a2170d3ee13dd22722222228e7b1c5752">ip_addr_ismulticast</a>(<a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>()))) {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="comment">/* pass broadcast- or multicast packets to all multicast pcbs</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="comment"> if SOF_REUSEADDR is set on the first match */</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keyword">struct </span>udp_pcb *mpcb;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> p_header_changed = 0;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a> hdrs_len = (<a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a>)(<a class="code" href="ip_8h.html#a2ca15ea285a10982294378cd7b8e83e2">ip_current_header_tot_len</a>() + <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>);</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">for</span> (mpcb = udp_pcbs; mpcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; mpcb = mpcb->next) {</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">if</span> (mpcb != pcb) {</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="comment">/* compare PCB local addr+port to UDP destination addr+port */</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span> ((mpcb->local_port == dest) &&</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  (udp_input_local_match(mpcb, inp, broadcast) != 0)) {</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="comment">/* pass a copy of the packet to all local matches */</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">if</span> (mpcb->recv != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q;</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="comment">/* for that, move payload to IP header again */</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">if</span> (p_header_changed == 0) {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <a class="code" href="pbuf_8h.html#a27480c41c34021d4417691d327163626">pbuf_header_force</a>(p, hdrs_len);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  p_header_changed = 1;</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  }</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  q = <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(<a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a>, 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="l00372"></a><span class="lineno"> 372</span>  <span class="keywordflow">if</span> (q != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err = <a class="code" href="group__pbuf.html#gaba88511dee3df4b631fde691f421320d">pbuf_copy</a>(q, p);</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">if</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">/* move payload to UDP data */</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <a class="code" href="pbuf_8h.html#aaa17c1951cf2d207b6adfd3947d91f00">pbuf_header</a>(q, -hdrs_len);</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  mpcb->recv(mpcb->recv_arg, mpcb, q, <a class="code" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>(), src);</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  }</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  }</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  }</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  }</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  }</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">if</span> (p_header_changed) {</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="comment">/* and move payload to UDP data again */</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <a class="code" href="pbuf_8h.html#aaa17c1951cf2d207b6adfd3947d91f00">pbuf_header</a>(p, -hdrs_len);</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  }</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="preprocessor">#endif </span><span class="comment">/* SO_REUSE && SO_REUSE_RXTOALL */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="comment">/* callback */</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span> (pcb->recv != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="comment">/* now the recv function is responsible for freeing p */</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  pcb->recv(pcb->recv_arg, pcb, p, <a class="code" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>(), src);</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="comment">/* no recv function registered? then we have to free the pbuf! */</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">goto</span> end;</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="keywordflow">else</span> {</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"udp_input: not for us.\n"</span>));</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  </div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="preprocessor">#if LWIP_ICMP || LWIP_ICMP6</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">/* No match was found, send ICMP destination port unreachable unless</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="comment"> destination address was broadcast/multicast. */</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keywordflow">if</span> (!broadcast && !<a class="code" href="ip__addr_8h.html#a2170d3ee13dd22722222228e7b1c5752">ip_addr_ismulticast</a>(<a class="code" href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>())) {</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="comment">/* move payload pointer back to ip header */</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <a class="code" href="pbuf_8h.html#a27480c41c34021d4417691d327163626">pbuf_header_force</a>(p, (<a class="code" href="group__compiler__abstraction.html#gacf46f4df0ebab84edebcb69967fdf86b">s16_t</a>)(<a class="code" href="ip_8h.html#a2ca15ea285a10982294378cd7b8e83e2">ip_current_header_tot_len</a>() + <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>));</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <a class="code" href="icmp_8h.html#a8d52f47a3b8237697544280c22f2925e">icmp_port_unreach</a>(ip_current_is_v6(), p);</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  }</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_ICMP || LWIP_ICMP6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.proterr);</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.drop);</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.udpnoports);</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  }</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  }</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> end:</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <a class="code" href="perf_8h.html#a8ac3afe5d720793a229fbf70a78eb82f">PERF_STOP</a>(<span class="stringliteral">"udp_input"</span>);</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="preprocessor">#if CHECKSUM_CHECK_UDP</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> chkerr:</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  (<span class="stringliteral">"udp_input: UDP (or UDP Lite) datagram discarded due to failing checksum\n"</span>));</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.chkerr);</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.drop);</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.udpinerrors);</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <a class="code" href="perf_8h.html#a8ac3afe5d720793a229fbf70a78eb82f">PERF_STOP</a>(<span class="stringliteral">"udp_input"</span>);</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="preprocessor">#endif </span><span class="comment">/* CHECKSUM_CHECK_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> }</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> udp_send(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p)</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> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || <a class="code" href="ip__addr_8h.html#a83b17dbf7d1faf5c8f8c20b039db8bb8">IP_IS_ANY_TYPE_VAL</a>(pcb->remote_ip)) {</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  }</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  </div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="comment">/* send to the packet using remote ip and port stored in the pcb */</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordflow">return</span> udp_sendto(pcb, p, &pcb->remote_ip, pcb->remote_port);</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> }</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  </div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  </div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> udp_send_chksum(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p,</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> have_chksum, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chksum)</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> {</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || <a class="code" href="ip__addr_8h.html#a83b17dbf7d1faf5c8f8c20b039db8bb8">IP_IS_ANY_TYPE_VAL</a>(pcb->remote_ip)) {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  }</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  </div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="comment">/* send to the packet using remote ip and port stored in the pcb */</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keywordflow">return</span> udp_sendto_chksum(pcb, p, &pcb->remote_ip, pcb->remote_port,</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  have_chksum, chksum);</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> }</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  </div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> udp_sendto(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p,</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port)</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span> {</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">return</span> udp_sendto_chksum(pcb, p, dst_ip, dst_port, 0, 0);</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> }</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  </div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> udp_sendto_chksum(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip,</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> have_chksum, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chksum)</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="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>;</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip_route = dst_ip;</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  </div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (dst_ip == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || !<a class="code" href="ip__addr_8h.html#a234cb2e45cd58a80bc3ef433d23f4c57">IP_ADDR_PCB_VERSION_MATCH</a>(pcb, dst_ip)) {</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  }</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  </div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"udp_send\n"</span>));</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  </div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="preprocessor">#if LWIP_IPV6 || (LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS)</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a2170d3ee13dd22722222228e7b1c5752">ip_addr_ismulticast</a>(dst_ip_route)) {</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(dst_ip)) {</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">/* For multicast, find a netif based on source address. */</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  dst_ip_route = &pcb->local_ip;</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  {</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="comment">/* IPv4 does not use source-based routing by default, so we use an</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span> <span class="comment"> administratively selected interface for multicast by default.</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> <span class="comment"> However, this can be overridden by setting an interface address</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span> <span class="comment"> in pcb->multicast_ip that is used for routing. */</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a>(pcb->multicast_ip) &&</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  !ip4_addr_cmp(ip_2_ip4(&pcb->multicast_ip), IP4_ADDR_BROADCAST)) {</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  dst_ip_route = &pcb->multicast_ip;</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="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  }</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  }</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 || (LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  </div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="comment">/* find the outgoing network interface for this packet */</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="keywordflow">if</span>(<a class="code" href="ip__addr_8h.html#a83b17dbf7d1faf5c8f8c20b039db8bb8">IP_IS_ANY_TYPE_VAL</a>(pcb->local_ip)) {</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="comment">/* Don't call ip_route() with IP_ANY_TYPE */</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <a class="code" href="structnetif.html">netif</a> = ip_route(<a class="code" href="ip__addr_8h.html#ae221446ab455b8a1a0d2a4153b9c1bb3">IP46_ADDR_ANY</a>(<a class="code" href="ip__addr_8h.html#aa2d07afd28376f89da2cdcf5d2497ce7">IP_GET_TYPE</a>(dst_ip_route)), dst_ip_route);</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <a class="code" href="structnetif.html">netif</a> = ip_route(&pcb->local_ip, dst_ip_route);</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>  <span class="comment">/* no outgoing network interface could be found? */</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a> == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"udp_send: No route to "</span>));</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, dst_ip);</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.rterr);</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a>;</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  }</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keywordflow">return</span> udp_sendto_if_chksum(pcb, p, dst_ip, dst_port, <a class="code" href="structnetif.html">netif</a>, have_chksum, chksum);</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keywordflow">return</span> udp_sendto_if(pcb, p, dst_ip, dst_port, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> }</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  </div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> udp_sendto_if(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p,</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span> {</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">return</span> udp_sendto_if_chksum(pcb, p, dst_ip, dst_port, <a class="code" href="structnetif.html">netif</a>, 0, 0);</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>  </div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span> udp_sendto_if_chksum(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip,</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> have_chksum,</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chksum)</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span> {</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *src_ip;</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  </div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (dst_ip == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || !<a class="code" href="ip__addr_8h.html#a234cb2e45cd58a80bc3ef433d23f4c57">IP_ADDR_PCB_VERSION_MATCH</a>(pcb, dst_ip)) {</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  }</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  </div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="comment">/* PCB local address is IP_ANY_ADDR? */</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(dst_ip)) {</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordflow">if</span> (ip6_addr_isany(<a class="code" href="ip__addr_8h.html#a06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(&pcb->local_ip))) {</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  src_ip = ip6_select_source_address(<a class="code" href="structnetif.html">netif</a>, <a class="code" href="ip__addr_8h.html#a06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(dst_ip));</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordflow">if</span> (src_ip == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="comment">/* No suitable source address was found. */</span></div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a>;</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  }</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="comment">/* use UDP PCB local IPv6 address as source address, if still valid. */</span></div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="keywordflow">if</span> (netif_get_ip6_addr_match(<a class="code" href="structnetif.html">netif</a>, <a class="code" href="ip__addr_8h.html#a06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(&pcb->local_ip)) < 0) {</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="comment">/* Address isn't valid anymore. */</span></div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a>;</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  }</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  src_ip = &pcb->local_ip;</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>  }</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keywordflow">if</span> (ip4_addr_isany(ip_2_ip4(&pcb->local_ip)) ||</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  ip4_addr_ismulticast(ip_2_ip4(&pcb->local_ip))) {</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  <span class="comment">/* if the local_ip is any or multicast</span></div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span> <span class="comment"> * use the outgoing network interface IP address as source address */</span></div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  src_ip = netif_ip_addr4(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="comment">/* check if UDP PCB local IP address is correct</span></div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span> <span class="comment"> * this could be an old address if netif->ip_addr has changed */</span></div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="keywordflow">if</span> (!ip4_addr_cmp(ip_2_ip4(&(pcb->local_ip)), netif_ip4_addr(<a class="code" href="structnetif.html">netif</a>))) {</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="comment">/* local_ip doesn't match, drop the packet */</span></div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a>;</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  }</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="comment">/* use UDP PCB local IP address as source address */</span></div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  src_ip = &pcb->local_ip;</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  }</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="keywordflow">return</span> udp_sendto_if_src_chksum(pcb, p, dst_ip, dst_port, <a class="code" href="structnetif.html">netif</a>, have_chksum, chksum, src_ip);</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="keywordflow">return</span> udp_sendto_if_src(pcb, p, dst_ip, dst_port, <a class="code" href="structnetif.html">netif</a>, src_ip);</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span> }</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  </div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span> udp_sendto_if_src(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p,</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *src_ip)</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span> {</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <span class="keywordflow">return</span> udp_sendto_if_src_chksum(pcb, p, dst_ip, dst_port, <a class="code" href="structnetif.html">netif</a>, 0, 0, src_ip);</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>  </div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span> udp_sendto_if_src_chksum(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dst_ip,</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> have_chksum,</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chksum, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *src_ip)</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span> {</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keyword">struct </span><a class="code" href="structudp__hdr.html">udp_hdr</a> *udphdr;</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q; <span class="comment">/* q will be sent down the stack */</span></div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> ip_proto;</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> ttl;</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  </div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (dst_ip == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || !<a class="code" href="ip__addr_8h.html#a234cb2e45cd58a80bc3ef433d23f4c57">IP_ADDR_PCB_VERSION_MATCH</a>(pcb, src_ip) ||</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  !<a class="code" href="ip__addr_8h.html#a234cb2e45cd58a80bc3ef433d23f4c57">IP_ADDR_PCB_VERSION_MATCH</a>(pcb, dst_ip)) {</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  }</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  </div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span> <span class="preprocessor">#if LWIP_IPV4 && IP_SOF_BROADCAST</span></div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="comment">/* broadcast filter? */</span></div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">SOF_BROADCAST</a>) &&</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#a872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a></div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <a class="code" href="ip__addr_8h.html#abee5dab2191bb0f3355d7f30d1496f24">IP_IS_V4</a>(dst_ip) &&</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span> #endif <span class="comment">/* LWIP_IPV6 */</span></div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <a class="code" href="ip__addr_8h.html#a11275b39f9b8e876e8124a16410e8840">ip_addr_isbroadcast</a>(dst_ip, <a class="code" href="structnetif.html">netif</a>)) {</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>,</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  (<span class="stringliteral">"udp_sendto_if: SOF_BROADCAST not enabled on pcb %p\n"</span>, (<span class="keywordtype">void</span> *)pcb));</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  }</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && IP_SOF_BROADCAST */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  </div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="comment">/* if the PCB is not yet bound to a port, bind it here */</span></div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">if</span> (pcb->local_port == 0) {</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"udp_send: not yet bound to a port, binding now\n"</span>));</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  err = udp_bind(pcb, &pcb->local_ip, pcb->local_port);</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordflow">if</span> (err != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"udp_send: forced port bind failed\n"</span>));</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  }</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  }</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  </div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="comment">/* not enough space to add an UDP header to first pbuf in given p chain? */</span></div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="keywordflow">if</span> (<a class="code" href="pbuf_8h.html#aaa17c1951cf2d207b6adfd3947d91f00">pbuf_header</a>(p, <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>)) {</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="comment">/* allocate header in a separate new pbuf */</span></div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  q = <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(<a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfafcc1e506061ba69dfa142eb6b3da5f13">PBUF_IP</a>, <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>, <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>);</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="comment">/* new header pbuf could not be allocated? */</span></div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keywordflow">if</span> (q == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga0269bdc51f1e8a5ecf9af72c6e1c996c">LWIP_DBG_LEVEL_SERIOUS</a>, (<span class="stringliteral">"udp_send: could not allocate header\n"</span>));</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  }</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> != 0) {</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <span class="comment">/* chain header q in front of given pbuf p (only if p contains data) */</span></div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <a class="code" href="group__pbuf.html#ga831c9a72bda1d3bd4c7b96f5a0e3b891">pbuf_chain</a>(q, p);</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  }</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <span class="comment">/* first pbuf q points to header pbuf */</span></div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>,</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  (<span class="stringliteral">"udp_send: added header pbuf %p before given pbuf %p\n"</span>, (<span class="keywordtype">void</span> *)q, (<span class="keywordtype">void</span> *)p));</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="comment">/* adding space for header within p succeeded */</span></div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <span class="comment">/* first pbuf q equals given pbuf */</span></div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  q = p;</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#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: added header in given pbuf %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="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"check that first pbuf can hold struct udp_hdr"</span>,</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  (q-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> >= <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structudp__hdr.html">udp_hdr</a>)));</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <span class="comment">/* q now represents the packet to be sent */</span></div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  udphdr = (<span class="keyword">struct </span><a class="code" href="structudp__hdr.html">udp_hdr</a> *)q-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  udphdr->src = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(pcb->local_port);</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  udphdr->dest = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(dst_port);</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="comment">/* in UDP, 0 checksum means 'no checksum' */</span></div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  udphdr->chksum = 0x0000;</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  </div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="comment">/* Multicast Loop? */</span></div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span> <span class="preprocessor">#if (LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS) || (LWIP_IPV6 && LWIP_IPV6_MLD)</span></div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="keywordflow">if</span> (((pcb->flags & UDP_FLAGS_MULTICAST_LOOP) != 0) && <a class="code" href="ip__addr_8h.html#a2170d3ee13dd22722222228e7b1c5752">ip_addr_ismulticast</a>(dst_ip)) {</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  q-><a class="code" href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">flags</a> |= <a class="code" href="pbuf_8h.html#ab8ad153151a8c157335d9c0cedc007e6">PBUF_FLAG_MCASTLOOP</a>;</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  }</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span> <span class="preprocessor">#endif </span><span class="comment">/* (LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS) || (LWIP_IPV6 && LWIP_IPV6_MLD) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  </div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: sending datagram of length %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>));</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  </div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span> <span class="preprocessor">#if LWIP_UDPLITE</span></div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="comment">/* UDP Lite protocol? */</span></div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <span class="keywordflow">if</span> (pcb->flags & UDP_FLAGS_UDPLITE) {</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> chklen, chklen_hdr;</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: UDP LITE packet length %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>));</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="comment">/* set UDP message length in UDP header */</span></div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  chklen_hdr = chklen = pcb->chksum_len_tx;</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordflow">if</span> ((chklen < <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structudp__hdr.html">udp_hdr</a>)) || (chklen > q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>)) {</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <span class="keywordflow">if</span> (chklen != 0) {</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: UDP LITE pcb->chksum_len is illegal: %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, chklen));</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  }</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="comment">/* For UDP-Lite, checksum length of 0 means checksum</span></div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span> <span class="comment"> over the complete packet. (See RFC 3828 chap. 3.1)</span></div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span> <span class="comment"> At least the UDP-Lite header must be covered by the</span></div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span> <span class="comment"> checksum, therefore, if chksum_len has an illegal</span></div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span> <span class="comment"> value, we generate the checksum over the complete</span></div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span> <span class="comment"> packet to be safe. */</span></div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  chklen_hdr = 0;</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  chklen = q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>;</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  }</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  udphdr->len = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(chklen_hdr);</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="comment">/* calculate checksum */</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span> <span class="preprocessor">#if CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <a class="code" href="netif_8h.html#ad968df1b35c2fae368e087966e3bc677">IF__NETIF_CHECKSUM_ENABLED</a>(<a class="code" href="structnetif.html">netif</a>, NETIF_CHECKSUM_GEN_UDP) {</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY</span></div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keywordflow">if</span> (have_chksum) {</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  chklen = <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>;</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> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  udphdr->chksum = <a class="code" href="inet__chksum_8h.html#acfe7ab6c63ef998210c66bb4822b03b2">ip_chksum_pseudo_partial</a>(q, <a class="code" href="prot_2ip_8h.html#a3ef2b8a1cb4f7acee3142337438dfd0d">IP_PROTO_UDPLITE</a>,</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>, chklen, src_ip, dst_ip);</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY</span></div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="keywordflow">if</span> (have_chksum) {</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> acc;</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  acc = udphdr->chksum + (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)~(chksum);</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  udphdr->chksum = <a class="code" href="inet__chksum_8h.html#a6ffe83b4bdd1784a0671ee4778966a01">FOLD_U32T</a>(acc);</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  }</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  </div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="comment">/* chksum zero must become 0xffff, as zero means 'no checksum' */</span></div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">if</span> (udphdr->chksum == 0x0000) {</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  udphdr->chksum = 0xffff;</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  }</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> <span class="preprocessor">#endif </span><span class="comment">/* CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  </div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  ip_proto = <a class="code" href="prot_2ip_8h.html#a3ef2b8a1cb4f7acee3142337438dfd0d">IP_PROTO_UDPLITE</a>;</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_UDPLITE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  { <span class="comment">/* UDP */</span></div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: UDP packet length %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>));</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  udphdr->len = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>);</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="comment">/* calculate checksum */</span></div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span> <span class="preprocessor">#if CHECKSUM_GEN_UDP</span></div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <a class="code" href="netif_8h.html#ad968df1b35c2fae368e087966e3bc677">IF__NETIF_CHECKSUM_ENABLED</a>(<a class="code" href="structnetif.html">netif</a>, NETIF_CHECKSUM_GEN_UDP) {</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <span class="comment">/* Checksum is mandatory over IPv6. */</span></div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(dst_ip) || (pcb->flags & UDP_FLAGS_NOCHKSUM) == 0) {</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> udpchksum;</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span> <span class="preprocessor">#if LWIP_CHECKSUM_ON_COPY</span></div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  <span class="keywordflow">if</span> (have_chksum) {</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> acc;</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  udpchksum = <a class="code" href="inet__chksum_8h.html#acfe7ab6c63ef998210c66bb4822b03b2">ip_chksum_pseudo_partial</a>(q, <a class="code" href="prot_2ip_8h.html#a76212e7ef71a99646040d2e454388bed">IP_PROTO_UDP</a>,</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>, <a class="code" href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a>, src_ip, dst_ip);</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  acc = udpchksum + (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)~(chksum);</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  udpchksum = <a class="code" href="inet__chksum_8h.html#a6ffe83b4bdd1784a0671ee4778966a01">FOLD_U32T</a>(acc);</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_CHECKSUM_ON_COPY */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  {</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  udpchksum = <a class="code" href="inet__chksum_8h.html#aa13cda42e7c262f5dee243ff6c28422f">ip_chksum_pseudo</a>(q, <a class="code" href="prot_2ip_8h.html#a76212e7ef71a99646040d2e454388bed">IP_PROTO_UDP</a>, q-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>,</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  src_ip, dst_ip);</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  }</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  </div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="comment">/* chksum zero must become 0xffff, as zero means 'no checksum' */</span></div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <span class="keywordflow">if</span> (udpchksum == 0x0000) {</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  udpchksum = 0xffff;</div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  }</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  udphdr->chksum = udpchksum;</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  }</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  }</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span> <span class="preprocessor">#endif </span><span class="comment">/* CHECKSUM_GEN_UDP */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  ip_proto = <a class="code" href="prot_2ip_8h.html#a76212e7ef71a99646040d2e454388bed">IP_PROTO_UDP</a>;</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  }</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  </div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="comment">/* Determine TTL to use */</span></div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span> <span class="preprocessor">#if LWIP_MULTICAST_TX_OPTIONS</span></div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  ttl = (<a class="code" href="ip__addr_8h.html#a2170d3ee13dd22722222228e7b1c5752">ip_addr_ismulticast</a>(dst_ip) ? udp_get_multicast_ttl(pcb) : pcb->ttl);</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_MULTICAST_TX_OPTIONS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  ttl = pcb->ttl;</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_MULTICAST_TX_OPTIONS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  </div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: UDP checksum 0x%04"</span><a class="code" href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a><span class="stringliteral">"\n"</span>, udphdr->chksum));</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_send: ip_output_if (,,,,0x%02"</span><a class="code" href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a><span class="stringliteral">",)\n"</span>, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)ip_proto));</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <span class="comment">/* output to IP */</span></div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <a class="code" href="netif_8h.html#ae1c22f1dab74a84d9e31316fd5fdfa11">NETIF_SET_HWADDRHINT</a>(<a class="code" href="structnetif.html">netif</a>, &(pcb->addr_hint));</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  err = ip_output_if_src(q, src_ip, dst_ip, ttl, pcb->tos, ip_proto, <a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  <a class="code" href="netif_8h.html#ae1c22f1dab74a84d9e31316fd5fdfa11">NETIF_SET_HWADDRHINT</a>(<a class="code" href="structnetif.html">netif</a>, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  </div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  <span class="comment">/* @todo: must this be increased even if error occurred? */</span></div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <a class="code" href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a>(mib2.udpoutdatagrams);</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  </div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="comment">/* did we chain a separate header pbuf earlier? */</span></div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keywordflow">if</span> (q != p) {</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="comment">/* free the header pbuf */</span></div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(q);</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  q = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="comment">/* p is still referenced by the caller, and will live on */</span></div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  }</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  </div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <a class="code" href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a>(udp.xmit);</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span> }</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  </div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span> udp_bind(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *ipaddr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port)</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span> {</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <span class="keyword">struct </span>udp_pcb *ipcb;</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> rebind;</div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  </div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <span class="comment">/* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */</span></div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="keywordflow">if</span> (ipaddr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  ipaddr = IP4_ADDR_ANY;</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  }</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  </div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">/* still need to check for ipaddr == NULL in IPv6 only case */</span></div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (ipaddr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  }</div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  </div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">"udp_bind(ipaddr = "</span>));</div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, ipaddr);</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a>, (<span class="stringliteral">", port = %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, port));</div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  </div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  rebind = 0;</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  <span class="comment">/* Check for double bind and rebind of the same pcb */</span></div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="keywordflow">for</span> (ipcb = udp_pcbs; ipcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; ipcb = ipcb->next) {</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="comment">/* is this UDP PCB already on active list? */</span></div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <span class="keywordflow">if</span> (pcb == ipcb) {</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  rebind = 1;</div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  }</div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  }</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  </div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  <span class="comment">/* no port specified? */</span></div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <span class="keywordflow">if</span> (port == 0) {</div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  port = udp_new_port();</div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  <span class="keywordflow">if</span> (port == 0) {</div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <span class="comment">/* no more ports available in local range */</span></div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"udp_bind: out of free UDP ports\n"</span>));</div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>;</div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  }</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="keywordflow">for</span> (ipcb = udp_pcbs; ipcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; ipcb = ipcb->next) {</div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="keywordflow">if</span> (pcb != ipcb) {</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  <span class="comment">/* By default, we don't allow to bind to a port that any other udp</span></div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span> <span class="comment"> PCB is already bound to, unless *all* PCBs with that port have tha</span></div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span> <span class="comment"> REUSEADDR flag set. */</span></div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span> <span class="preprocessor">#if SO_REUSE</span></div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(pcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>) ||</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  !<a class="code" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a>(ipcb, <a class="code" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a>))</div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span> <span class="preprocessor">#endif </span><span class="comment">/* SO_REUSE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  {</div>
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="comment">/* port matches that of PCB in list and REUSEADDR not set -> reject */</span></div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="keywordflow">if</span> ((ipcb->local_port == port) &&</div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  <span class="comment">/* IP address matches? */</span></div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&ipcb->local_ip, ipaddr)) {</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="comment">/* other PCB already binds to this local IP and port */</span></div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>,</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  (<span class="stringliteral">"udp_bind: local port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" already bound by another pcb\n"</span>, port));</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>;</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  }</div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  }</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  }</div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  }</div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  }</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  </div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <a class="code" href="ip__addr_8h.html#aea5e4795598bc33fa2db1773c8e6fbac">ip_addr_set_ipaddr</a>(&pcb->local_ip, ipaddr);</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  </div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  pcb->local_port = port;</div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  <a class="code" href="snmp_8h.html#acfc2d746bbaf82da4c34bbc65122931f">mib2_udp_bind</a>(pcb);</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  <span class="comment">/* pcb not active yet? */</span></div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <span class="keywordflow">if</span> (rebind == 0) {</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  <span class="comment">/* place the PCB on the active list if not already there */</span></div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  pcb->next = udp_pcbs;</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  udp_pcbs = pcb;</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>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"udp_bind: bound to "</span>));</div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, &pcb->local_ip);</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">", port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, pcb->local_port));</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span> }</div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  </div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span> udp_connect(<span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *ipaddr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port)</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span> {</div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  <span class="keyword">struct </span>udp_pcb *ipcb;</div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  </div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <span class="keywordflow">if</span> ((pcb == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || (ipaddr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</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>  </div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <span class="keywordflow">if</span> (pcb->local_port == 0) {</div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err = udp_bind(pcb, &pcb->local_ip, pcb->local_port);</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keywordflow">if</span> (err != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  }</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  }</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  </div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  <a class="code" href="ip__addr_8h.html#aea5e4795598bc33fa2db1773c8e6fbac">ip_addr_set_ipaddr</a>(&pcb->remote_ip, ipaddr);</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  pcb->remote_port = port;</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  pcb->flags |= UDP_FLAGS_CONNECTED;</div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  </div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">"udp_connect: connected to "</span>));</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>,</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  &pcb->remote_ip);</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga988147559b78642ac881815b66023646">LWIP_DBG_TRACE</a> | <a class="code" href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a>, (<span class="stringliteral">", port %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">")\n"</span>, pcb->remote_port));</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  </div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  <span class="comment">/* Insert UDP PCB into the list of active UDP PCBs. */</span></div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  <span class="keywordflow">for</span> (ipcb = udp_pcbs; ipcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; ipcb = ipcb->next) {</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  <span class="keywordflow">if</span> (pcb == ipcb) {</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  <span class="comment">/* already on the list, just return */</span></div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  }</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  }</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  <span class="comment">/* PCB not yet on the list, add PCB now */</span></div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  pcb->next = udp_pcbs;</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  udp_pcbs = pcb;</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span> }</div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  </div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span> udp_disconnect(<span class="keyword">struct</span> udp_pcb *pcb)</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span> {</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <span class="comment">/* reset remote address association */</span></div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a83b17dbf7d1faf5c8f8c20b039db8bb8">IP_IS_ANY_TYPE_VAL</a>(pcb->local_ip)) {</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(pcb->remote_ip, *<a class="code" href="ip__addr_8h.html#abe43b154533b73585c4e58f568370ede">IP_ANY_TYPE</a>);</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <a class="code" href="ip__addr_8h.html#a8853fce54b1816dca3af90b48677e673">ip_addr_set_any</a>(<a class="code" href="ip__addr_8h.html#a1578e34703e86711a7fb7dcc3857004d">IP_IS_V6_VAL</a>(pcb->remote_ip), &pcb->remote_ip);</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  }</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  pcb->remote_port = 0;</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  <span class="comment">/* mark PCB as unconnected */</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  pcb->flags &= ~UDP_FLAGS_CONNECTED;</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span> }</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  </div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span> udp_recv(<span class="keyword">struct</span> udp_pcb *pcb, udp_recv_fn recv, <span class="keywordtype">void</span> *recv_arg)</div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span> {</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  <span class="comment">/* remember recv() callback and user data */</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  pcb->recv = recv;</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  pcb->recv_arg = recv_arg;</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span> }</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  </div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span> udp_remove(<span class="keyword">struct</span> udp_pcb *pcb)</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span> {</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keyword">struct </span>udp_pcb *pcb2;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  </div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <a class="code" href="snmp_8h.html#a701a7670780a5e1663766efb7819a57b">mib2_udp_unbind</a>(pcb);</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  <span class="comment">/* pcb to be removed is first in list? */</span></div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="keywordflow">if</span> (udp_pcbs == pcb) {</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="comment">/* make list start at 2nd pcb */</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  udp_pcbs = udp_pcbs->next;</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="comment">/* pcb not 1st in list */</span></div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  <span class="keywordflow">for</span> (pcb2 = udp_pcbs; pcb2 != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; pcb2 = pcb2->next) {</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  <span class="comment">/* find pcb in udp_pcbs list */</span></div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  <span class="keywordflow">if</span> (pcb2->next != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> && pcb2->next == pcb) {</div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <span class="comment">/* remove pcb from list */</span></div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  pcb2->next = pcb->next;</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  }</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  }</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  }</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_UDP_PCB, pcb);</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span> }</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  </div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> <span class="keyword">struct </span>udp_pcb *</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span> udp_new(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span> {</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  <span class="keyword">struct </span>udp_pcb *pcb;</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  pcb = (<span class="keyword">struct </span>udp_pcb *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_UDP_PCB);</div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <span class="comment">/* could allocate UDP PCB? */</span></div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  <span class="comment">/* UDP Lite: by initializing to all zeroes, chksum_len is set to 0</span></div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span> <span class="comment"> * which means checksum is generated over the whole datagram per default</span></div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span> <span class="comment"> * (recommended as default by RFC 3828). */</span></div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  <span class="comment">/* initialize PCB to all zeroes */</span></div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  <a class="code" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a>(pcb, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> udp_pcb));</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  pcb->ttl = <a class="code" href="lwipopts_8h.html#a97908a317bcba89174b5d1ccbdca0096">UDP_TTL</a>;</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span> <span class="preprocessor">#if LWIP_MULTICAST_TX_OPTIONS</span></div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  udp_set_multicast_ttl(pcb, <a class="code" href="lwipopts_8h.html#a97908a317bcba89174b5d1ccbdca0096">UDP_TTL</a>);</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_MULTICAST_TX_OPTIONS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  }</div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="keywordflow">return</span> pcb;</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="l01134"></a><span class="lineno"> 1134</span> <span class="keyword">struct </span>udp_pcb *</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span> udp_new_ip_type(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> type)</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>  <span class="keyword">struct </span>udp_pcb *pcb;</div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  pcb = udp_new();</div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  <span class="keywordflow">if</span> (pcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  <a class="code" href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a>(pcb->local_ip, type);</div>
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  <a class="code" href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a>(pcb->remote_ip, type);</div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  }</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(type);</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  <span class="keywordflow">return</span> pcb;</div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span> }</div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  </div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span> <span class="keywordtype">void</span> udp_netif_ip_addr_changed(<span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* old_addr, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* new_addr)</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span> {</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  <span class="keyword">struct </span>udp_pcb* upcb;</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  </div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(old_addr) && !<a class="code" href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a>(new_addr)) {</div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  <span class="keywordflow">for</span> (upcb = udp_pcbs; upcb != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; upcb = upcb->next) {</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="comment">/* PCB bound to current local interface address? */</span></div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&upcb->local_ip, old_addr)) {</div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="comment">/* The PCB is bound to the old ipaddr and</span></div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span> <span class="comment"> * is set to bound to the new one instead */</span></div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(upcb->local_ip, *new_addr);</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  }</div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  }</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  }</div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span> }</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  </div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span> <span class="preprocessor">#if UDP_DEBUG</span></div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  </div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span> udp_debug_print(<span class="keyword">struct</span> <a class="code" href="structudp__hdr.html">udp_hdr</a> *udphdr)</div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span> {</div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"UDP header:\n"</span>));</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"| %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | (src port, dest port)\n"</span>,</div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->src), <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->dest)));</div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"| %5"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">" | 0x%04"</span><a class="code" href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a><span class="stringliteral">" | (len, chksum)\n"</span>,</div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->len), <a class="code" href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a>(udphdr->chksum)));</div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a>, (<span class="stringliteral">"+-------------------------------+\n"</span>));</div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span> }</div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span> <span class="preprocessor">#endif </span><span class="comment">/* UDP_DEBUG */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  </div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_UDP */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aip__addr_8h_html_aea5e4795598bc33fa2db1773c8e6fbac"><div class="ttname"><a href="ip__addr_8h.html#aea5e4795598bc33fa2db1773c8e6fbac">ip_addr_set_ipaddr</a></div><div class="ttdeci">#define ip_addr_set_ipaddr(dest, src)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00308">ip_addr.h:308</a></div></div>
<div class="ttc" id="aip_8h_html_ac8c7ccdad2d7d3a264bd8cfc57140ca8"><div class="ttname"><a href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">SOF_BROADCAST</a></div><div class="ttdeci">#define SOF_BROADCAST</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00099">ip.h:99</a></div></div>
<div class="ttc" id="asnmp_8h_html_acfc2d746bbaf82da4c34bbc65122931f"><div class="ttname"><a href="snmp_8h.html#acfc2d746bbaf82da4c34bbc65122931f">mib2_udp_bind</a></div><div class="ttdeci">#define mib2_udp_bind(pcb)</div><div class="ttdef"><b>Definition:</b> <a href="snmp_8h_source.html#l00191">snmp.h:191</a></div></div>
<div class="ttc" id="adef_8h_html_ac642bf6057869696d7807564d8309ffc"><div class="ttname"><a href="def_8h.html#ac642bf6057869696d7807564d8309ffc">lwip_ntohs</a></div><div class="ttdeci">#define lwip_ntohs(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00076">def.h:76</a></div></div>
<div class="ttc" id="aopt_8h_html"><div class="ttname"><a href="opt_8h.html">opt.h</a></div></div>
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<div class="ttc" id="aip__addr_8h_html_a9bac7e938757f1d24df2404e8b57cb7d"><div class="ttname"><a href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a></div><div class="ttdeci">#define IP_IS_V6(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00296">ip_addr.h:296</a></div></div>
<div class="ttc" id="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="astructudp__hdr_html"><div class="ttname"><a href="structudp__hdr.html">udp_hdr</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2udp_8h_source.html#l00053">udp.h:53</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>
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<div class="ttc" id="aip__addr_8h_html_abee5dab2191bb0f3355d7f30d1496f24"><div class="ttname"><a href="ip__addr_8h.html#abee5dab2191bb0f3355d7f30d1496f24">IP_IS_V4</a></div><div class="ttdeci">#define IP_IS_V4(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00295">ip_addr.h:295</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a1578e34703e86711a7fb7dcc3857004d"><div class="ttname"><a href="ip__addr_8h.html#a1578e34703e86711a7fb7dcc3857004d">IP_IS_V6_VAL</a></div><div class="ttdeci">#define IP_IS_V6_VAL(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00294">ip_addr.h:294</a></div></div>
<div class="ttc" id="adebug_8h_html_a94ad086267808462beae2b38f91996ed"><div class="ttname"><a href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a></div><div class="ttdeci">#define LWIP_ASSERT(message, assertion)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00116">debug.h:116</a></div></div>
<div class="ttc" id="agroup__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="aip_8h_html_a2ca15ea285a10982294378cd7b8e83e2"><div class="ttname"><a href="ip_8h.html#a2ca15ea285a10982294378cd7b8e83e2">ip_current_header_tot_len</a></div><div class="ttdeci">#define ip_current_header_tot_len()</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00139">ip.h:139</a></div></div>
<div class="ttc" id="aip_8h_html_a9135977868017c3deeec86b525e13997"><div class="ttname"><a href="ip_8h.html#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a></div><div class="ttdeci">#define ip_current_dest_addr()</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00212">ip.h:212</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a872e3bb3fe2212156d66b18fccc9643f"><div class="ttname"><a href="lwipopts_8h.html#a872e3bb3fe2212156d66b18fccc9643f">LWIP_IPV6</a></div><div class="ttdeci">#define LWIP_IPV6</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00366">lwipopts.h:366</a></div></div>
<div class="ttc" id="agroup__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="aip__addr_8h_html_a2170d3ee13dd22722222228e7b1c5752"><div class="ttname"><a href="ip__addr_8h.html#a2170d3ee13dd22722222228e7b1c5752">ip_addr_ismulticast</a></div><div class="ttdeci">#define ip_addr_ismulticast(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00322">ip_addr.h:322</a></div></div>
<div class="ttc" id="aip__addr_8h_html_ae221446ab455b8a1a0d2a4153b9c1bb3"><div class="ttname"><a href="ip__addr_8h.html#ae221446ab455b8a1a0d2a4153b9c1bb3">IP46_ADDR_ANY</a></div><div class="ttdeci">#define IP46_ADDR_ANY(type)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00331">ip_addr.h:331</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a83b17dbf7d1faf5c8f8c20b039db8bb8"><div class="ttname"><a href="ip__addr_8h.html#a83b17dbf7d1faf5c8f8c20b039db8bb8">IP_IS_ANY_TYPE_VAL</a></div><div class="ttdeci">#define IP_IS_ANY_TYPE_VAL(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00297">ip_addr.h:297</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a279118890e6a90aa740051fb8b0cc5f4"><div class="ttname"><a href="ip__addr_8h.html#a279118890e6a90aa740051fb8b0cc5f4">ip_addr_isany</a></div><div class="ttdeci">#define ip_addr_isany(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00317">ip_addr.h:317</a></div></div>
<div class="ttc" id="astructpbuf_html_a5259e7ec29bab9c0999b64f2e86b411f"><div class="ttname"><a href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">pbuf::tot_len</a></div><div class="ttdeci">u16_t tot_len</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00156">pbuf.h:156</a></div></div>
<div class="ttc" id="aip__addr_8h_html_abe43b154533b73585c4e58f568370ede"><div class="ttname"><a href="ip__addr_8h.html#abe43b154533b73585c4e58f568370ede">IP_ANY_TYPE</a></div><div class="ttdeci">#define IP_ANY_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00400">ip_addr.h:400</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="apbuf_8h_html_ab8ad153151a8c157335d9c0cedc007e6"><div class="ttname"><a href="pbuf_8h.html#ab8ad153151a8c157335d9c0cedc007e6">PBUF_FLAG_MCASTLOOP</a></div><div class="ttdeci">#define PBUF_FLAG_MCASTLOOP</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00133">pbuf.h:133</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="ainet__chksum_8h_html_acfe7ab6c63ef998210c66bb4822b03b2"><div class="ttname"><a href="inet__chksum_8h.html#acfe7ab6c63ef998210c66bb4822b03b2">ip_chksum_pseudo_partial</a></div><div class="ttdeci">u16_t ip_chksum_pseudo_partial(struct pbuf *p, u8_t proto, u16_t proto_len, u16_t chksum_len, const ip_addr_t *src, const ip_addr_t *dest)</div><div class="ttdef"><b>Definition:</b> <a href="inet__chksum_8c_source.html#l00526">inet_chksum.c:526</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a11275b39f9b8e876e8124a16410e8840"><div class="ttname"><a href="ip__addr_8h.html#a11275b39f9b8e876e8124a16410e8840">ip_addr_isbroadcast</a></div><div class="ttdeci">#define ip_addr_isbroadcast(addr, netif)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00321">ip_addr.h:321</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="aip__addr_8h_html_a81ed1fbe375d867d6e77c83976c07671"><div class="ttname"><a href="ip__addr_8h.html#a81ed1fbe375d867d6e77c83976c07671">IP_ADDR_PCB_VERSION_MATCH_EXACT</a></div><div class="ttdeci">#define IP_ADDR_PCB_VERSION_MATCH_EXACT(pcb, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00240">ip_addr.h:240</a></div></div>
<div class="ttc" id="alwipopts_8h_html_af3822feed320cf8439b083ee525e4942"><div class="ttname"><a href="lwipopts_8h.html#af3822feed320cf8439b083ee525e4942">SO_REUSE</a></div><div class="ttdeci">#define SO_REUSE</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00303">lwipopts.h:303</a></div></div>
<div class="ttc" id="ainet__chksum_8h_html_aa13cda42e7c262f5dee243ff6c28422f"><div class="ttname"><a href="inet__chksum_8h.html#aa13cda42e7c262f5dee243ff6c28422f">ip_chksum_pseudo</a></div><div class="ttdeci">u16_t ip_chksum_pseudo(struct pbuf *p, u8_t proto, u16_t proto_len, const ip_addr_t *src, const ip_addr_t *dest)</div><div class="ttdef"><b>Definition:</b> <a href="inet__chksum_8c_source.html#l00379">inet_chksum.c:379</a></div></div>
<div class="ttc" id="anetif_8h_html_ae1c22f1dab74a84d9e31316fd5fdfa11"><div class="ttname"><a href="netif_8h.html#ae1c22f1dab74a84d9e31316fd5fdfa11">NETIF_SET_HWADDRHINT</a></div><div class="ttdeci">#define NETIF_SET_HWADDRHINT(netif, hint)</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00475">netif.h:475</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga1418f92673e54a36b6e376109e526382"><div class="ttname"><a href="group__compiler__abstraction.html#ga1418f92673e54a36b6e376109e526382">X16_F</a></div><div class="ttdeci">#define X16_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00154">arch.h:154</a></div></div>
<div class="ttc" id="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="anetif_8h_html_ad968df1b35c2fae368e087966e3bc677"><div class="ttname"><a href="netif_8h.html#ad968df1b35c2fae368e087966e3bc677">IF__NETIF_CHECKSUM_ENABLED</a></div><div class="ttdeci">#define IF__NETIF_CHECKSUM_ENABLED(netif, chksumflag)</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00357">netif.h:357</a></div></div>
<div class="ttc" id="aip__addr_8h_html_acd8f5aa151cff966fd28368b85f38c05"><div class="ttname"><a href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a></div><div class="ttdeci">#define ip_addr_isany_val(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00318">ip_addr.h:318</a></div></div>
<div class="ttc" id="aicmp_8h_html"><div class="ttname"><a href="icmp_8h.html">icmp.h</a></div></div>
<div class="ttc" id="astructpbuf_html_aa4d1af2cab3d9280d29212095b5b872a"><div class="ttname"><a href="structpbuf.html#aa4d1af2cab3d9280d29212095b5b872a">pbuf::flags</a></div><div class="ttdeci">u8_t flags</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00165">pbuf.h:165</a></div></div>
<div class="ttc" id="aip__addr_8h_html_af7d84bce2fb861a97f3047ecd69ab018"><div class="ttname"><a href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a></div><div class="ttdeci">#define ip_addr_debug_print(debug, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00323">ip_addr.h:323</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a6747f7b72abe544fd4dc184cc7fcad37"><div class="ttname"><a href="lwipopts_8h.html#a6747f7b72abe544fd4dc184cc7fcad37">CHECKSUM_CHECK_UDP</a></div><div class="ttdeci">#define CHECKSUM_CHECK_UDP</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00360">lwipopts.h:360</a></div></div>
<div class="ttc" id="asnmp_8h_html"><div class="ttname"><a href="snmp_8h.html">snmp.h</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__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="aicmp6_8h_html"><div class="ttname"><a href="icmp6_8h.html">icmp6.h</a></div></div>
<div class="ttc" id="anetif_8h_html"><div class="ttname"><a href="netif_8h.html">netif.h</a></div></div>
<div class="ttc" id="aicmp_8h_html_a8d52f47a3b8237697544280c22f2925e"><div class="ttname"><a href="icmp_8h.html#a8d52f47a3b8237697544280c22f2925e">icmp_port_unreach</a></div><div class="ttdeci">#define icmp_port_unreach(isipv6, pbuf)</div><div class="ttdef"><b>Definition:</b> <a href="icmp_8h_source.html#l00103">icmp.h:103</a></div></div>
<div class="ttc" id="asnmp_8h_html_a701a7670780a5e1663766efb7819a57b"><div class="ttname"><a href="snmp_8h.html#a701a7670780a5e1663766efb7819a57b">mib2_udp_unbind</a></div><div class="ttdeci">#define mib2_udp_unbind(pcb)</div><div class="ttdef"><b>Definition:</b> <a href="snmp_8h_source.html#l00192">snmp.h:192</a></div></div>
<div class="ttc" id="aip_8h_html_aabecef3c7653a9767c79245c44fcab9f"><div class="ttname"><a href="ip_8h.html#aabecef3c7653a9767c79245c44fcab9f">ip_current_netif</a></div><div class="ttdeci">#define ip_current_netif()</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00133">ip.h:133</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gacfcb0a2af918658ba0afe36499c65f47"><div class="ttname"><a href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a></div><div class="ttdeci">struct pbuf * pbuf_alloc(pbuf_layer l, u16_t length, pbuf_type type)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00248">pbuf.c:248</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga4caecabca98b43919dd11be1c0d4cd8e"><div class="ttname"><a href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div><div class="ttdeci">uint8_t u8_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00122">arch.h:122</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a88b43639738c4de2d3cd22e3a1fd7696"><div class="ttname"><a href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a></div><div class="ttdeci">ip6_addr_t ip_addr_t</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00290">ip_addr.h:290</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a234cb2e45cd58a80bc3ef433d23f4c57"><div class="ttname"><a href="ip__addr_8h.html#a234cb2e45cd58a80bc3ef433d23f4c57">IP_ADDR_PCB_VERSION_MATCH</a></div><div class="ttdeci">#define IP_ADDR_PCB_VERSION_MATCH(addr, pcb)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00239">ip_addr.h:239</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a8853fce54b1816dca3af90b48677e673"><div class="ttname"><a href="ip__addr_8h.html#a8853fce54b1816dca3af90b48677e673">ip_addr_set_any</a></div><div class="ttdeci">#define ip_addr_set_any(is_ipv6, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00311">ip_addr.h:311</a></div></div>
<div class="ttc" id="aip_8h_html_a4e35b7692c228c98e738892f0a215647"><div class="ttname"><a href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a></div><div class="ttdeci">#define ip_current_src_addr()</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00210">ip.h:210</a></div></div>
<div class="ttc" id="astructnetif_html"><div class="ttname"><a href="structnetif.html">netif</a></div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00233">netif.h:233</a></div></div>
<div class="ttc" id="astats_8h_html_acfc9de2d6edadfa3de3d9dfeb48f76b2"><div class="ttname"><a href="stats_8h.html#acfc9de2d6edadfa3de3d9dfeb48f76b2">UDP_STATS_INC</a></div><div class="ttdeci">#define UDP_STATS_INC(x)</div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00336">stats.h:336</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a06e75bcd198012b5ba39480c233608bd"><div class="ttname"><a href="ip__addr_8h.html#a06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a></div><div class="ttdeci">#define ip_2_ip6(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00301">ip_addr.h:301</a></div></div>
<div class="ttc" id="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="astats_8h_html_a237a8f1e47af42fb612e936e928a9ced"><div class="ttname"><a href="stats_8h.html#a237a8f1e47af42fb612e936e928a9ced">MIB2_STATS_INC</a></div><div class="ttdeci">#define MIB2_STATS_INC(x)</div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00467">stats.h:467</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga70624a5deb8b9199406372a7f3603ecf"><div class="ttname"><a href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a></div><div class="ttdeci">#define LWIP_UNUSED_ARG(x)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00315">arch.h:315</a></div></div>
<div class="ttc" id="adef_8c_html_ad637280639de4066392e6b5614fa3e56"><div class="ttname"><a href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a></div><div class="ttdeci">u16_t lwip_htons(u16_t n)</div><div class="ttdef"><b>Definition:</b> <a href="def_8c_source.html#l00075">def.c:75</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 *head, struct pbuf *tail)</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__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__compiler__abstraction_html_gaa9d7f6eb2ee9fcc5eda3545dbb1886e0"><div class="ttname"><a href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a></div><div class="ttdeci">#define U16_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00148">arch.h:148</a></div></div>
<div class="ttc" id="adhcp_8h_html"><div class="ttname"><a href="dhcp_8h.html">dhcp.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00063">err.h:63</a></div></div>
<div class="ttc" id="aip_8h_html_aa40b3366a7939ec3a60e9a7d239575e2"><div class="ttname"><a href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">SOF_REUSEADDR</a></div><div class="ttdeci">#define SOF_REUSEADDR</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00097">ip.h:97</a></div></div>
<div class="ttc" id="aprot_2ip_8h_html_a3ef2b8a1cb4f7acee3142337438dfd0d"><div class="ttname"><a href="prot_2ip_8h.html#a3ef2b8a1cb4f7acee3142337438dfd0d">IP_PROTO_UDPLITE</a></div><div class="ttdeci">#define IP_PROTO_UDPLITE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2ip_8h_source.html#l00045">ip.h:45</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_gaf02d9da80fd66b4f986d2c53d7231ddb"><div class="ttname"><a href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div><div class="ttdeci">s8_t err_t</div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00057">err.h:57</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a77a933975db287f6aa5c2e70249ba18f"><div class="ttname"><a href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a></div><div class="ttdeci">#define ip_addr_copy(dest, src)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00305">ip_addr.h:305</a></div></div>
<div class="ttc" id="audp_8h_html"><div class="ttname"><a href="udp_8h.html">udp.h</a></div></div>
<div class="ttc" id="aip6__addr_8h_html"><div class="ttname"><a href="ip6__addr_8h.html">ip6_addr.h</a></div></div>
<div class="ttc" id="aip__addr_8h_html_aaa800ce1929a1bb0f3d64bebd44e4051"><div class="ttname"><a href="ip__addr_8h.html#aaa800ce1929a1bb0f3d64bebd44e4051">IP_SET_TYPE_VAL</a></div><div class="ttdeci">#define IP_SET_TYPE_VAL(ipaddr, iptype)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00298">ip_addr.h:298</a></div></div>
<div class="ttc" id="astring_8h_html_ace4b911463887af5e748326323e99a23"><div class="ttname"><a href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a></div><div class="ttdeci">void * memset(void *dst, int c, size_t length)</div></div>
<div class="ttc" id="aip_8h_html_a26e077f52de4a97ff89c02415c084518"><div class="ttname"><a href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">ip_get_option</a></div><div class="ttdeci">#define ip_get_option(pcb, opt)</div><div class="ttdef"><b>Definition:</b> <a href="ip_8h_source.html#l00215">ip.h:215</a></div></div>
<div class="ttc" id="amemp_8h_html"><div class="ttname"><a href="memp_8h.html">memp.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00079">err.h:79</a></div></div>
<div class="ttc" id="apbuf_8h_html_a27480c41c34021d4417691d327163626"><div class="ttname"><a href="pbuf_8h.html#a27480c41c34021d4417691d327163626">pbuf_header_force</a></div><div class="ttdeci">u8_t pbuf_header_force(struct pbuf *p, s16_t header_size)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00675">pbuf.c:675</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca9448893187313c0c5a502ca9a9ad1c2a">ERR_RTE</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00071">err.h:71</a></div></div>
<div class="ttc" id="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="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="aip6_8h_html"><div class="ttname"><a href="ip6_8h.html">ip6.h</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga511ee3deb3240635f5ec6a1709c6d741"><div class="ttname"><a href="group__debugging__levels.html#ga511ee3deb3240635f5ec6a1709c6d741">LWIP_DBG_STATE</a></div><div class="ttdeci">#define LWIP_DBG_STATE</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00085">debug.h:85</a></div></div>
<div class="ttc" id="aip__addr_8h_html"><div class="ttname"><a href="ip__addr_8h.html">ip_addr.h</a></div></div>
<div class="ttc" id="aprot_2udp_8h_html_a5e211e5d295f6e70dee42f3083f89e71"><div class="ttname"><a href="prot_2udp_8h.html#a5e211e5d295f6e70dee42f3083f89e71">UDP_HLEN</a></div><div class="ttdeci">#define UDP_HLEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2udp_8h_source.html#l00046">udp.h:46</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="apbuf_8h_html_aaa17c1951cf2d207b6adfd3947d91f00"><div class="ttname"><a href="pbuf_8h.html#aaa17c1951cf2d207b6adfd3947d91f00">pbuf_header</a></div><div class="ttdeci">u8_t pbuf_header(struct pbuf *p, s16_t header_size)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00665">pbuf.c:665</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="aip__addr_8h_html_aa2d07afd28376f89da2cdcf5d2497ce7"><div class="ttname"><a href="ip__addr_8h.html#aa2d07afd28376f89da2cdcf5d2497ce7">IP_GET_TYPE</a></div><div class="ttdeci">#define IP_GET_TYPE(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00300">ip_addr.h:300</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a97908a317bcba89174b5d1ccbdca0096"><div class="ttname"><a href="lwipopts_8h.html#a97908a317bcba89174b5d1ccbdca0096">UDP_TTL</a></div><div class="ttdeci">#define UDP_TTL</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00168">lwipopts.h:168</a></div></div>
<div class="ttc" id="aprot_2ip_8h_html_a76212e7ef71a99646040d2e454388bed"><div class="ttname"><a href="prot_2ip_8h.html#a76212e7ef71a99646040d2e454388bed">IP_PROTO_UDP</a></div><div class="ttdeci">#define IP_PROTO_UDP</div><div class="ttdef"><b>Definition:</b> <a href="prot_2ip_8h_source.html#l00044">ip.h:44</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a0393f312c5475a1c649b39ef9cfcaad4"><div class="ttname"><a href="lwipopts_8h.html#a0393f312c5475a1c649b39ef9cfcaad4">UDP_DEBUG</a></div><div class="ttdeci">#define UDP_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00481">lwipopts.h:481</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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