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<div class="title">igmp.c</div> </div>
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<a href="igmp_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="l00010"></a><span class="lineno"> 10</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * Copyright (c) 2002 CITEL Technologies Ltd.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * All rights reserved.</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"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * are met:</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * documentation and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * 3. Neither the name of CITEL Technologies Ltd nor the names of its contributors</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * may be used to endorse or promote products derived from this software</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * without specific prior written permission.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``AS IS''</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL CITEL TECHNOLOGIES OR CONTRIBUTORS BE LIABLE</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * SUCH DAMAGE.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * This file is a contribution to the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * The Swedish Institute of Computer Science and Adam Dunkels</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * are specifically granted permission to redistribute this</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * source code.</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>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">/*-------------------------------------------------------------</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">Note 1)</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">Although the rfc requires V1 AND V2 capability</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">we will only support v2 since now V1 is very old (August 1989)</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">V1 can be added if required</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"></span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">a debug print and statistic have been implemented to</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">show this up.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">-------------------------------------------------------------</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">-------------------------------------------------------------</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">Note 2)</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">A query for a specific group address (as opposed to ALLHOSTS)</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">has now been implemented as I am unsure if it is required</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">a debug print and statistic have been implemented to</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">show this up.</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">-------------------------------------------------------------</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">-------------------------------------------------------------</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">Note 3)</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">The router alert rfc 2113 is implemented in outgoing packets</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">but not checked rigorously incoming</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">-------------------------------------------------------------</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">Steve Reynolds</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">/*-----------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> * RFC 988 - Host extensions for IP multicasting - V0</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * RFC 1054 - Host extensions for IP multicasting -</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * RFC 1112 - Host extensions for IP multicasting - V1</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> * RFC 2236 - Internet Group Management Protocol, Version 2 - V2 <- this code is based on this RFC (it's the "de facto" standard)</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * RFC 3376 - Internet Group Management Protocol, Version 3 - V3</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * RFC 4604 - Using Internet Group Management Protocol Version 3... - V3+</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * RFC 2113 - IP Router Alert Option -</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> *----------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">/*-----------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> * Includes</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> *----------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IGMP </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="l00086"></a><span class="lineno"> 86</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor">#include "<a class="code" href="igmp_8h.html">net/igmp.h</a>"</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#include "<a class="code" href="debug_8h.html">net/debug.h</a>"</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#include "<a class="code" href="def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#include "<a class="code" href="mem_8h.html">net/mem.h</a>"</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor">#include "<a class="code" href="ip_8h.html">net/ip.h</a>"</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</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="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor">#include "<a class="code" href="netif_8h.html">net/netif.h</a>"</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor">#include "<a class="code" href="stats_8h.html">net/stats.h</a>"</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#include "<a class="code" href="prot_2igmp_8h.html">net/prot/igmp.h</a>"</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor">#include "<a class="code" href="string_8h.html">string.h</a>"</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">static</span> <span class="keyword">struct </span>igmp_group *igmp_lookup_group(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *ifp, <span class="keyword">const</span> ip4_addr_t *addr);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> igmp_remove_group(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a>* <a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> igmp_group *group);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">static</span> <span class="keywordtype">void</span> igmp_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> igmp_group *group);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">static</span> <span class="keywordtype">void</span> igmp_start_timer(<span class="keyword">struct</span> igmp_group *group, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> max_time);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">static</span> <span class="keywordtype">void</span> igmp_delaying_member(<span class="keyword">struct</span> igmp_group *group, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> maxresp);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> igmp_ip_output_if(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> ip4_addr_t *src, <span class="keyword">const</span> ip4_addr_t *dest, <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="l00105"></a><span class="lineno"> 105</span> <span class="keyword">static</span> <span class="keywordtype">void</span> igmp_send(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> igmp_group *group, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> type);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keyword">static</span> ip4_addr_t allsystems;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">static</span> ip4_addr_t allrouters;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> igmp_init(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_init: initializing\n"</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>  IP4_ADDR(&allsystems, 224, 0, 0, 1);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  IP4_ADDR(&allrouters, 224, 0, 0, 2);</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> igmp_start(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">struct </span>igmp_group* group;</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="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_start: starting IGMP processing on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  group = igmp_lookup_group(<a class="code" href="structnetif.html">netif</a>, &allsystems);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  group->group_state = <a class="code" href="prot_2igmp_8h.html#a5b9419fe533da22ca7015cac97e8b1e3">IGMP_GROUP_IDLE_MEMBER</a>;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  group->use++;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">/* Allow the igmp messages at the MAC level */</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a>->igmp_mac_filter != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_start: igmp_mac_filter(ADD "</span>));</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  ip4_addr_debug_print_val(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, allsystems);</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">") on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="code" href="structnetif.html">netif</a>->igmp_mac_filter(<a class="code" href="structnetif.html">netif</a>, &allsystems, <a class="code" href="netif_8h.html#ab194ec4241fad8b6e9aac51e3ec23de0a4186fbaf94be956ea1a3b02cd1cccb1f">NETIF_ADD_MAC_FILTER</a>);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> }</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> igmp_stop(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">struct </span>igmp_group *group = netif_igmp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  netif_set_client_data(<a class="code" href="structnetif.html">netif</a>, LWIP_NETIF_CLIENT_DATA_INDEX_IGMP, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">while</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">struct </span>igmp_group *next = group->next; <span class="comment">/* avoid use-after-free below */</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="comment">/* disable the group at the MAC level */</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a>->igmp_mac_filter != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_stop: igmp_mac_filter(DEL "</span>));</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, &group->group_address);</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">") on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <a class="code" href="structnetif.html">netif</a>->igmp_mac_filter(<a class="code" href="structnetif.html">netif</a>, &(group->group_address), <a class="code" href="netif_8h.html#ab194ec4241fad8b6e9aac51e3ec23de0a7ad3406353906deb4e64ebeed349e07e">NETIF_DEL_MAC_FILTER</a>);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  }</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">/* free group */</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_IGMP_GROUP, group);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  </div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">/* move to "next" */</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  group = next;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> }</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> igmp_report_groups(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">struct </span>igmp_group *group = netif_igmp_data(<a class="code" href="structnetif.html">netif</a>);</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="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_report_groups: sending IGMP reports on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</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>  <span class="comment">/* Skip the first group in the list, it is always the allsystems group added in igmp_start() */</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">if</span>(group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  group = group->next;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">while</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  igmp_delaying_member(group, IGMP_JOIN_DELAYING_MEMBER_TMR);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  group = group->next;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> }</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">struct </span>igmp_group *</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> igmp_lookfor_group(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *ifp, <span class="keyword">const</span> ip4_addr_t *addr)</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> {</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">struct </span>igmp_group *group = netif_igmp_data(ifp);</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">while</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">if</span> (ip4_addr_cmp(&(group->group_address), addr)) {</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">return</span> group;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  group = group->next;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">/* to be clearer, we return NULL here instead of</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"> * 'group' (which is also NULL at this point).</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="keyword">static</span> <span class="keyword">struct </span>igmp_group *</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> igmp_lookup_group(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *ifp, <span class="keyword">const</span> ip4_addr_t *addr)</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> {</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keyword">struct </span>igmp_group *group;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">struct </span>igmp_group *list_head = netif_igmp_data(ifp);</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  </div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">/* Search if the group already exists */</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  group = igmp_lookfor_group(ifp, addr);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">if</span> (group != <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="comment">/* Group already exists. */</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span> group;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  }</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  </div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="comment">/* Group doesn't exist yet, create a new one */</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  group = (<span class="keyword">struct </span>igmp_group *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_IGMP_GROUP);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">if</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  ip4_addr_set(&(group->group_address), addr);</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  group->timer = 0; <span class="comment">/* Not running */</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  group->group_state = <a class="code" href="prot_2igmp_8h.html#a0357ddf34e5e88adaa654ad562adab54">IGMP_GROUP_NON_MEMBER</a>;</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  group->last_reporter_flag = 0;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  group->use = 0;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  </div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">/* Ensure allsystems group is always first in list */</span> </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">if</span> (list_head == <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">/* this is the first entry in linked list */</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"igmp_lookup_group: first group must be allsystems"</span>,</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  (ip4_addr_cmp(addr, &allsystems) != 0));</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  group->next = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  netif_set_client_data(ifp, LWIP_NETIF_CLIENT_DATA_INDEX_IGMP, group);</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>  <span class="comment">/* append _after_ first entry */</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"igmp_lookup_group: all except first group must not be allsystems"</span>,</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  (ip4_addr_cmp(addr, &allsystems) == 0));</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  group->next = list_head->next;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  list_head->next = group;</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  }</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  </div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_lookup_group: %sallocated a new group with address "</span>, (group?<span class="stringliteral">""</span>:<span class="stringliteral">"impossible to "</span>)));</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, addr);</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">" on if %p\n"</span>, (<span class="keywordtype">void</span>*)ifp));</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>  <span class="keywordflow">return</span> group;</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> }</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> igmp_remove_group(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a>* <a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> igmp_group *group)</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> {</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keyword">struct </span>igmp_group *tmp_group;</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">/* Skip the first group in the list, it is always the allsystems group added in igmp_start() */</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">for</span> (tmp_group = netif_igmp_data(<a class="code" href="structnetif.html">netif</a>); tmp_group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; tmp_group = tmp_group->next) {</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">if</span> (tmp_group->next == group) {</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  tmp_group->next = group->next;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  }</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  }</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="comment">/* Group not found in the global igmp_group_list */</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">if</span> (tmp_group == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  }</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  </div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> }</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  </div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> igmp_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, <span class="keyword">const</span> ip4_addr_t *dest)</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> {</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keyword">struct </span><a class="code" href="structigmp__msg.html">igmp_msg</a>* igmp;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keyword">struct </span>igmp_group* group;</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">struct </span>igmp_group* groupref;</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>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.recv);</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  </div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="comment">/* Note that the length CAN be greater than 8 but only 8 are used - All are included in the checksum */</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> < <a class="code" href="prot_2igmp_8h.html#ad91c1a732326c16656dc7059f807acfd">IGMP_MINLEN</a>) {</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.lenerr);</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: length error\n"</span>));</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">return</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>  </div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: message from "</span>));</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, &(ip4_current_header()->src));</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">" to address "</span>));</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, &(ip4_current_header()->dest));</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">" on if %p\n"</span>, (<span class="keywordtype">void</span>*)inp));</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">/* Now calculate and check the checksum */</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  igmp = (<span class="keyword">struct </span><a class="code" href="structigmp__msg.html">igmp_msg</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  if (<a class="code" href="inet__chksum_8h.html#a34f1aa1587562a09e11b704b51bab043">inet_chksum</a>(igmp, p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a>)) {</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.chkerr);</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: checksum error\n"</span>));</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  }</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  </div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">/* Packet is ok so find an existing group */</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  group = igmp_lookfor_group(inp, dest); <span class="comment">/* use the destination IP address of incoming packet */</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  </div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="comment">/* If group can be found or create... */</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">if</span> (!group) {</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.drop);</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: IGMP frame not for us\n"</span>));</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  }</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  </div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="comment">/* NOW ACT ON THE INCOMING MESSAGE TYPE... */</span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">switch</span> (igmp->igmp_msgtype) {</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2igmp_8h.html#a0f85ab43aac98cc525c4d21b45bb08c9">IGMP_MEMB_QUERY</a>:</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="comment">/* IGMP_MEMB_QUERY to the "all systems" address ? */</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">if</span> ((ip4_addr_cmp(dest, &allsystems)) && ip4_addr_isany(&igmp->igmp_group_address)) {</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="comment">/* THIS IS THE GENERAL QUERY */</span></div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: General IGMP_MEMB_QUERY on \"ALL SYSTEMS\" address (224.0.0.1) [igmp_maxresp=%i]\n"</span>, (<span class="keywordtype">int</span>)(igmp->igmp_maxresp)));</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> (igmp->igmp_maxresp == 0) {</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.rx_v1);</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: got an all hosts query with time== 0 - this is V1 and not implemented - treat as v2\n"</span>));</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  igmp->igmp_maxresp = IGMP_V1_DELAYING_MEMBER_TMR;</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.rx_general);</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>  groupref = netif_igmp_data(inp);</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>  <span class="comment">/* Do not send messages on the all systems group address! */</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="comment">/* Skip the first group in the list, it is always the allsystems group added in igmp_start() */</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">if</span>(groupref != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  groupref = groupref->next;</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="keywordflow">while</span> (groupref) {</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  igmp_delaying_member(groupref, igmp->igmp_maxresp);</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  groupref = groupref->next;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  }</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="comment">/* IGMP_MEMB_QUERY to a specific group ? */</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">if</span> (!ip4_addr_isany(&igmp->igmp_group_address)) {</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: IGMP_MEMB_QUERY to a specific group "</span>));</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, &igmp->igmp_group_address);</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">if</span> (ip4_addr_cmp(dest, &allsystems)) {</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  ip4_addr_t groupaddr;</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#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">" using \"ALL SYSTEMS\" address (224.0.0.1) [igmp_maxresp=%i]\n"</span>, (<span class="keywordtype">int</span>)(igmp->igmp_maxresp)));</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">/* we first need to re-look for the group since we used dest last time */</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  ip4_addr_copy(groupaddr, igmp->igmp_group_address);</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  group = igmp_lookfor_group(inp, &groupaddr);</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">" with the group address as destination [igmp_maxresp=%i]\n"</span>, (<span class="keywordtype">int</span>)(igmp->igmp_maxresp)));</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  }</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  </div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">if</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.rx_group);</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  igmp_delaying_member(group, igmp->igmp_maxresp);</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.drop);</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  }</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.proterr);</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  }</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  }</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">case</span> <a class="code" href="prot_2igmp_8h.html#a26b6b8b5dc43098b16d417a29b31a9e0">IGMP_V2_MEMB_REPORT</a>:</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: IGMP_V2_MEMB_REPORT\n"</span>));</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.rx_report);</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">if</span> (group->group_state == <a class="code" href="prot_2igmp_8h.html#a9c2129b3fb6f212eac44192ced19d33d">IGMP_GROUP_DELAYING_MEMBER</a>) {</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="comment">/* This is on a specific group we have already looked up */</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  group->timer = 0; <span class="comment">/* stopped */</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  group->group_state = <a class="code" href="prot_2igmp_8h.html#a5b9419fe533da22ca7015cac97e8b1e3">IGMP_GROUP_IDLE_MEMBER</a>;</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  group->last_reporter_flag = 0;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  }</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_input: unexpected msg %d in state %d on group %p on if %p\n"</span>,</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  igmp->igmp_msgtype, group->group_state, (<span class="keywordtype">void</span>*)&group, (<span class="keywordtype">void</span>*)inp));</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.proterr);</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  }</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  </div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> }</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  </div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> igmp_joingroup(<span class="keyword">const</span> ip4_addr_t *ifaddr, <span class="keyword">const</span> ip4_addr_t *groupaddr)</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> {</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>; <span class="comment">/* no matching interface */</span></div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</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="l00453"></a><span class="lineno"> 453</span>  </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="comment">/* make sure it is multicast address */</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_joingroup: attempt to join non-multicast address"</span>, ip4_addr_ismulticast(groupaddr), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_joingroup: attempt to join allsystems address"</span>, (!ip4_addr_cmp(groupaddr, &allsystems)), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  </div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="comment">/* loop through netif's */</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a>;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">while</span> (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="comment">/* Should we join this interface ? */</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordflow">if</span> ((<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">flags</a> & <a class="code" href="group__netif__flags.html#gac9493b923d733c73f6006d9714826558">NETIF_FLAG_IGMP</a>) && ((ip4_addr_isany(ifaddr) || ip4_addr_cmp(netif_ip4_addr(<a class="code" href="structnetif.html">netif</a>), ifaddr)))) {</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  err = igmp_joingroup_netif(<a class="code" href="structnetif.html">netif</a>, groupaddr);</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</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="l00465"></a><span class="lineno"> 465</span>  <span class="comment">/* Return an error even if some network interfaces are joined */</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  }</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="comment">/* proceed to next network interface */</span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ae77736b64df442242795220d76be6b86">next</a>;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  }</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  </div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">return</span> err;</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="l00485"></a><span class="lineno"> 485</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> igmp_joingroup_netif(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">const</span> ip4_addr_t *groupaddr)</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> {</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keyword">struct </span>igmp_group *group;</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  </div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="comment">/* make sure it is multicast address */</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_joingroup_netif: attempt to join non-multicast address"</span>, ip4_addr_ismulticast(groupaddr), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_joingroup_netif: attempt to join allsystems address"</span>, (!ip4_addr_cmp(groupaddr, &allsystems)), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  </div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">/* make sure it is an igmp-enabled netif */</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_joingroup_netif: attempt to join on non-IGMP netif"</span>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">flags</a> & <a class="code" href="group__netif__flags.html#gac9493b923d733c73f6006d9714826558">NETIF_FLAG_IGMP</a>, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  </div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">/* find group or create a new one if not found */</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  group = igmp_lookup_group(<a class="code" href="structnetif.html">netif</a>, groupaddr);</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  </div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keywordflow">if</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="comment">/* This should create a new group, check the state to make sure */</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keywordflow">if</span> (group->group_state != <a class="code" href="prot_2igmp_8h.html#a0357ddf34e5e88adaa654ad562adab54">IGMP_GROUP_NON_MEMBER</a>) {</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_joingroup_netif: join to group not in state IGMP_GROUP_NON_MEMBER\n"</span>));</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="comment">/* OK - it was new group */</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_joingroup_netif: join to new group: "</span>));</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, groupaddr);</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  </div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="comment">/* If first use of the group, allow the group at the MAC level */</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keywordflow">if</span> ((group->use==0) && (<a class="code" href="structnetif.html">netif</a>->igmp_mac_filter != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)) {</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_joingroup_netif: igmp_mac_filter(ADD "</span>));</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, groupaddr);</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">") on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <a class="code" href="structnetif.html">netif</a>->igmp_mac_filter(<a class="code" href="structnetif.html">netif</a>, groupaddr, <a class="code" href="netif_8h.html#ab194ec4241fad8b6e9aac51e3ec23de0a4186fbaf94be956ea1a3b02cd1cccb1f">NETIF_ADD_MAC_FILTER</a>);</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  }</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  </div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.tx_join);</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  igmp_send(<a class="code" href="structnetif.html">netif</a>, group, <a class="code" href="prot_2igmp_8h.html#a26b6b8b5dc43098b16d417a29b31a9e0">IGMP_V2_MEMB_REPORT</a>);</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  </div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  igmp_start_timer(group, IGMP_JOIN_DELAYING_MEMBER_TMR);</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>  <span class="comment">/* Need to work out where this timer comes from */</span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  group->group_state = <a class="code" href="prot_2igmp_8h.html#a9c2129b3fb6f212eac44192ced19d33d">IGMP_GROUP_DELAYING_MEMBER</a>;</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  }</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="comment">/* Increment group use */</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  group->use++;</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="comment">/* Join on this interface */</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_joingroup_netif: Not enough memory to join to group\n"</span>));</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  }</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> }</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  </div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span> igmp_leavegroup(<span class="keyword">const</span> ip4_addr_t *ifaddr, <span class="keyword">const</span> ip4_addr_t *groupaddr)</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span> {</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>; <span class="comment">/* no matching interface */</span></div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</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="l00549"></a><span class="lineno"> 549</span>  </div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="comment">/* make sure it is multicast address */</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_leavegroup: attempt to leave non-multicast address"</span>, ip4_addr_ismulticast(groupaddr), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_leavegroup: attempt to leave allsystems address"</span>, (!ip4_addr_cmp(groupaddr, &allsystems)), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  </div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <span class="comment">/* loop through netif's */</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a>;</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="keywordflow">while</span> (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="comment">/* Should we leave this interface ? */</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="keywordflow">if</span> ((<a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">flags</a> & <a class="code" href="group__netif__flags.html#gac9493b923d733c73f6006d9714826558">NETIF_FLAG_IGMP</a>) && ((ip4_addr_isany(ifaddr) || ip4_addr_cmp(netif_ip4_addr(<a class="code" href="structnetif.html">netif</a>), ifaddr)))) {</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> res = igmp_leavegroup_netif(<a class="code" href="structnetif.html">netif</a>, groupaddr);</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</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="l00561"></a><span class="lineno"> 561</span>  <span class="comment">/* Store this result if we have not yet gotten a success */</span></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  err = res;</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>  }</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="comment">/* proceed to next network interface */</span></div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ae77736b64df442242795220d76be6b86">next</a>;</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  }</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  </div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> }</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  </div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span> igmp_leavegroup_netif(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">const</span> ip4_addr_t *groupaddr)</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> {</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keyword">struct </span>igmp_group *group;</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  </div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="comment">/* make sure it is multicast address */</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_leavegroup_netif: attempt to leave non-multicast address"</span>, ip4_addr_ismulticast(groupaddr), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_leavegroup_netif: attempt to leave allsystems address"</span>, (!ip4_addr_cmp(groupaddr, &allsystems)), <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  </div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">/* make sure it is an igmp-enabled netif */</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <a class="code" href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a>(<span class="stringliteral">"igmp_leavegroup_netif: attempt to leave on non-IGMP netif"</span>, <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">flags</a> & <a class="code" href="group__netif__flags.html#gac9493b923d733c73f6006d9714826558">NETIF_FLAG_IGMP</a>, <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;);</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  </div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="comment">/* find group */</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  group = igmp_lookfor_group(<a class="code" href="structnetif.html">netif</a>, groupaddr);</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="keywordflow">if</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="comment">/* Only send a leave if the flag is set according to the state diagram */</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_leavegroup_netif: Leaving group: "</span>));</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, groupaddr);</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  </div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="comment">/* If there is no other use of the group */</span></div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="keywordflow">if</span> (group->use <= 1) {</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="comment">/* Remove the group from the list */</span></div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  igmp_remove_group(<a class="code" href="structnetif.html">netif</a>, group);</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  </div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="comment">/* If we are the last reporter for this group */</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">if</span> (group->last_reporter_flag) {</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_leavegroup_netif: sending leaving group\n"</span>));</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.tx_leave);</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  igmp_send(<a class="code" href="structnetif.html">netif</a>, group, <a class="code" href="prot_2igmp_8h.html#a4d87457009ed27ade2309cebe7a1dfcf">IGMP_LEAVE_GROUP</a>);</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>  </div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="comment">/* Disable the group at the MAC level */</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">if</span> (<a class="code" href="structnetif.html">netif</a>->igmp_mac_filter != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_leavegroup_netif: igmp_mac_filter(DEL "</span>));</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, groupaddr);</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">") on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <a class="code" href="structnetif.html">netif</a>->igmp_mac_filter(<a class="code" href="structnetif.html">netif</a>, groupaddr, <a class="code" href="netif_8h.html#ab194ec4241fad8b6e9aac51e3ec23de0a7ad3406353906deb4e64ebeed349e07e">NETIF_DEL_MAC_FILTER</a>);</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  }</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  </div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <span class="comment">/* Free group struct */</span></div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_IGMP_GROUP, group);</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="comment">/* Decrement group use */</span></div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  group->use--;</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>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_leavegroup_netif: not member of group\n"</span>));</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  }</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> }</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  </div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span> igmp_tmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span> {</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a> = <a class="code" href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a>;</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  </div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="keywordflow">while</span> (<a class="code" href="structnetif.html">netif</a> != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keyword">struct </span>igmp_group *group = netif_igmp_data(<a class="code" href="structnetif.html">netif</a>);</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  </div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keywordflow">while</span> (group != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="keywordflow">if</span> (group->timer > 0) {</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  group->timer--;</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keywordflow">if</span> (group->timer == 0) {</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  igmp_timeout(<a class="code" href="structnetif.html">netif</a>, group);</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  }</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  }</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  group = group->next;</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  }</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <a class="code" href="structnetif.html">netif</a> = <a class="code" href="structnetif.html">netif</a>-><a class="code" href="structnetif.html#ae77736b64df442242795220d76be6b86">next</a>;</div>
<div class="line"><a name="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="l00658"></a><span class="lineno"> 658</span>  </div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span> igmp_timeout(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> igmp_group *group)</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span> {</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <span class="comment">/* If the state is IGMP_GROUP_DELAYING_MEMBER then we send a report for this group</span></div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span> <span class="comment"> (unless it is the allsystems group) */</span></div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keywordflow">if</span> ((group->group_state == <a class="code" href="prot_2igmp_8h.html#a9c2129b3fb6f212eac44192ced19d33d">IGMP_GROUP_DELAYING_MEMBER</a>) &&</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  (!(ip4_addr_cmp(&(group->group_address), &allsystems)))) {</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_timeout: report membership for group with address "</span>));</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  ip4_addr_debug_print(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, &(group->group_address));</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">" on if %p\n"</span>, (<span class="keywordtype">void</span>*)<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  </div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  group->group_state = <a class="code" href="prot_2igmp_8h.html#a5b9419fe533da22ca7015cac97e8b1e3">IGMP_GROUP_IDLE_MEMBER</a>;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  </div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.tx_report);</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  igmp_send(<a class="code" href="structnetif.html">netif</a>, group, <a class="code" href="prot_2igmp_8h.html#a26b6b8b5dc43098b16d417a29b31a9e0">IGMP_V2_MEMB_REPORT</a>);</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> }</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  </div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span> igmp_start_timer(<span class="keyword">struct</span> igmp_group *group, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> max_time)</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span> {</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span> <span class="preprocessor">#ifdef LWIP_RAND</span></div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  group->timer = max_time > 2 ? (LWIP_RAND() % max_time) : 1;</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_RAND */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="comment">/* ATTENTION: use this only if absolutely necessary! */</span></div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  group->timer = max_time / 2;</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_RAND */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  </div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">if</span> (group->timer == 0) {</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  group->timer = 1;</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  }</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span> }</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  </div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span> igmp_delaying_member(<span class="keyword">struct</span> igmp_group *group, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> maxresp)</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span> {</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keywordflow">if</span> ((group->group_state == <a class="code" href="prot_2igmp_8h.html#a5b9419fe533da22ca7015cac97e8b1e3">IGMP_GROUP_IDLE_MEMBER</a>) ||</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  ((group->group_state == <a class="code" href="prot_2igmp_8h.html#a9c2129b3fb6f212eac44192ced19d33d">IGMP_GROUP_DELAYING_MEMBER</a>) &&</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  ((group->timer == 0) || (maxresp < group->timer)))) {</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  igmp_start_timer(group, maxresp);</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  group->group_state = <a class="code" href="prot_2igmp_8h.html#a9c2129b3fb6f212eac44192ced19d33d">IGMP_GROUP_DELAYING_MEMBER</a>;</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  }</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span> }</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  </div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  </div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span> igmp_ip_output_if(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> ip4_addr_t *src, <span class="keyword">const</span> ip4_addr_t *dest, <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="l00741"></a><span class="lineno"> 741</span> {</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="comment">/* This is the "router alert" option */</span></div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> ra[2];</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  ra[0] = <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2igmp_8h.html#a0b0944c1c4f2a64c79831d18f7d31802">ROUTER_ALERT</a>);</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  ra[1] = 0x0000; <span class="comment">/* Router shall examine packet */</span></div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.xmit);</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <span class="keywordflow">return</span> ip4_output_if_opt(p, src, dest, <a class="code" href="prot_2igmp_8h.html#a6ff76a6f7654b21a70e216151c97a869">IGMP_TTL</a>, 0, <a class="code" href="prot_2ip_8h.html#a4f8609139fce15ace0c6d117021e29a4">IP_PROTO_IGMP</a>, <a class="code" href="structnetif.html">netif</a>, ra, <a class="code" href="prot_2igmp_8h.html#aa4bce84f942c375b780404c56f0ed51c">ROUTER_ALERTLEN</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>  </div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span> igmp_send(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> igmp_group *group, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> type)</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span> {</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a>* p = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keyword">struct </span><a class="code" href="structigmp__msg.html">igmp_msg</a>* igmp = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  ip4_addr_t src = *IP4_ADDR_ANY4;</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  ip4_addr_t* dest = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  </div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="comment">/* IP header + "router alert" option + IGMP header */</span></div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  p = <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(<a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a>, <a class="code" href="prot_2igmp_8h.html#ad91c1a732326c16656dc7059f807acfd">IGMP_MINLEN</a>, <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>);</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  </div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keywordflow">if</span> (p) {</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  igmp = (<span class="keyword">struct </span><a class="code" href="structigmp__msg.html">igmp_msg</a> *)p-><a class="code" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"igmp_send: check that first pbuf can hold struct igmp_msg"</span>,</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  (p-><a class="code" href="structpbuf.html#a6f82449625e36e294f5d210268c0703f">len</a> >= <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code" href="structigmp__msg.html">igmp_msg</a>)));</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  ip4_addr_copy(src, *netif_ip4_addr(<a class="code" href="structnetif.html">netif</a>));</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  </div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="keywordflow">if</span> (type == <a class="code" href="prot_2igmp_8h.html#a26b6b8b5dc43098b16d417a29b31a9e0">IGMP_V2_MEMB_REPORT</a>) {</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  dest = &(group->group_address);</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  ip4_addr_copy(igmp->igmp_group_address, group->group_address);</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  group->last_reporter_flag = 1; <span class="comment">/* Remember we were the last to report */</span></div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="keywordflow">if</span> (type == <a class="code" href="prot_2igmp_8h.html#a4d87457009ed27ade2309cebe7a1dfcf">IGMP_LEAVE_GROUP</a>) {</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  dest = &allrouters;</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  ip4_addr_copy(igmp->igmp_group_address, group->group_address);</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  }</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  }</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  </div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="keywordflow">if</span> ((type == <a class="code" href="prot_2igmp_8h.html#a26b6b8b5dc43098b16d417a29b31a9e0">IGMP_V2_MEMB_REPORT</a>) || (type == <a class="code" href="prot_2igmp_8h.html#a4d87457009ed27ade2309cebe7a1dfcf">IGMP_LEAVE_GROUP</a>)) {</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  igmp->igmp_msgtype = type;</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  igmp->igmp_maxresp = 0;</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  igmp->igmp_checksum = 0;</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  igmp->igmp_checksum = <a class="code" href="inet__chksum_8h.html#a34f1aa1587562a09e11b704b51bab043">inet_chksum</a>(igmp, <a class="code" href="prot_2igmp_8h.html#ad91c1a732326c16656dc7059f807acfd">IGMP_MINLEN</a>);</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  </div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  igmp_ip_output_if(p, &src, dest, <a class="code" href="structnetif.html">netif</a>);</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>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a>, (<span class="stringliteral">"igmp_send: not enough memory for igmp_send\n"</span>));</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <a class="code" href="stats_8h.html#ad4ddb71a8ddf444971069c1569f0cd03">IGMP_STATS_INC</a>(igmp.memerr);</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  }</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span> }</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  </div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IGMP */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aopt_8h_html"><div class="ttname"><a href="opt_8h.html">opt.h</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html_a0357ddf34e5e88adaa654ad562adab54"><div class="ttname"><a href="prot_2igmp_8h.html#a0357ddf34e5e88adaa654ad562adab54">IGMP_GROUP_NON_MEMBER</a></div><div class="ttdeci">#define IGMP_GROUP_NON_MEMBER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00064">igmp.h:64</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>
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<div class="ttc" id="aprot_2igmp_8h_html_a0b0944c1c4f2a64c79831d18f7d31802"><div class="ttname"><a href="prot_2igmp_8h.html#a0b0944c1c4f2a64c79831d18f7d31802">ROUTER_ALERT</a></div><div class="ttdeci">#define ROUTER_ALERT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00052">igmp.h:52</a></div></div>
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<div class="ttc" id="astructigmp__msg_html"><div class="ttname"><a href="structigmp__msg.html">igmp_msg</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00075">igmp.h:75</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>
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<div class="ttc" id="aprot_2igmp_8h_html_a26b6b8b5dc43098b16d417a29b31a9e0"><div class="ttname"><a href="prot_2igmp_8h.html#a26b6b8b5dc43098b16d417a29b31a9e0">IGMP_V2_MEMB_REPORT</a></div><div class="ttdeci">#define IGMP_V2_MEMB_REPORT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00060">igmp.h:60</a></div></div>
<div class="ttc" id="astructnetif_html_a1c171db6097bbb6f09f63549a66e00ea"><div class="ttname"><a href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">netif::flags</a></div><div class="ttdeci">u8_t flags</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00313">netif.h:313</a></div></div>
<div class="ttc" id="anetif_8h_html_ab194ec4241fad8b6e9aac51e3ec23de0a7ad3406353906deb4e64ebeed349e07e"><div class="ttname"><a href="netif_8h.html#ab194ec4241fad8b6e9aac51e3ec23de0a7ad3406353906deb4e64ebeed349e07e">NETIF_DEL_MAC_FILTER</a></div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00153">netif.h:153</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_ab194ec4241fad8b6e9aac51e3ec23de0a4186fbaf94be956ea1a3b02cd1cccb1f"><div class="ttname"><a href="netif_8h.html#ab194ec4241fad8b6e9aac51e3ec23de0a4186fbaf94be956ea1a3b02cd1cccb1f">NETIF_ADD_MAC_FILTER</a></div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00155">netif.h:155</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html_a6ff76a6f7654b21a70e216151c97a869"><div class="ttname"><a href="prot_2igmp_8h.html#a6ff76a6f7654b21a70e216151c97a869">IGMP_TTL</a></div><div class="ttdeci">#define IGMP_TTL</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00050">igmp.h:50</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="anetif_8h_html"><div class="ttname"><a href="netif_8h.html">netif.h</a></div></div>
<div class="ttc" id="adebug_8h_html_a827bc03cd7889e7c007df39d33b33d18"><div class="ttname"><a href="debug_8h.html#a827bc03cd7889e7c007df39d33b33d18">LWIP_ERROR</a></div><div class="ttdeci">#define LWIP_ERROR(message, expression, handler)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00135">debug.h:135</a></div></div>
<div class="ttc" id="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="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="aprot_2igmp_8h_html_a5b9419fe533da22ca7015cac97e8b1e3"><div class="ttname"><a href="prot_2igmp_8h.html#a5b9419fe533da22ca7015cac97e8b1e3">IGMP_GROUP_IDLE_MEMBER</a></div><div class="ttdeci">#define IGMP_GROUP_IDLE_MEMBER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00066">igmp.h:66</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00096">err.h:96</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a8da07508ee75704362d45eee3eb857fa"><div class="ttname"><a href="lwipopts_8h.html#a8da07508ee75704362d45eee3eb857fa">IGMP_DEBUG</a></div><div class="ttdeci">#define IGMP_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00445">lwipopts.h:445</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html"><div class="ttname"><a href="prot_2igmp_8h.html">igmp.h</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html_aa4bce84f942c375b780404c56f0ed51c"><div class="ttname"><a href="prot_2igmp_8h.html#aa4bce84f942c375b780404c56f0ed51c">ROUTER_ALERTLEN</a></div><div class="ttdeci">#define ROUTER_ALERTLEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00053">igmp.h:53</a></div></div>
<div class="ttc" id="astructnetif_html_ae77736b64df442242795220d76be6b86"><div class="ttname"><a href="structnetif.html#ae77736b64df442242795220d76be6b86">netif::next</a></div><div class="ttdeci">struct netif * next</div><div class="ttdef"><b>Definition:</b> <a href="netif_8h_source.html#l00235">netif.h:235</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00108">pbuf.h:108</a></div></div>
<div class="ttc" id="anetif_8h_html_a1c8141eaa98f6dc6dfddbb23a706656c"><div class="ttname"><a href="netif_8h.html#a1c8141eaa98f6dc6dfddbb23a706656c">netif_list</a></div><div class="ttdeci">struct netif * netif_list</div><div class="ttdef"><b>Definition:</b> <a href="netif_8c_source.html#l00104">netif.c:104</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00063">err.h:63</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_gaf02d9da80fd66b4f986d2c53d7231ddb"><div class="ttname"><a href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div><div class="ttdeci">s8_t err_t</div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00057">err.h:57</a></div></div>
<div class="ttc" id="aip_8h_html"><div class="ttname"><a href="ip_8h.html">ip.h</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html_ad91c1a732326c16656dc7059f807acfd"><div class="ttname"><a href="prot_2igmp_8h.html#ad91c1a732326c16656dc7059f807acfd">IGMP_MINLEN</a></div><div class="ttdeci">#define IGMP_MINLEN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00051">igmp.h:51</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html_a9c2129b3fb6f212eac44192ced19d33d"><div class="ttname"><a href="prot_2igmp_8h.html#a9c2129b3fb6f212eac44192ced19d33d">IGMP_GROUP_DELAYING_MEMBER</a></div><div class="ttdeci">#define IGMP_GROUP_DELAYING_MEMBER</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00065">igmp.h:65</a></div></div>
<div class="ttc" id="aprot_2ip_8h_html_a4f8609139fce15ace0c6d117021e29a4"><div class="ttname"><a href="prot_2ip_8h.html#a4f8609139fce15ace0c6d117021e29a4">IP_PROTO_IGMP</a></div><div class="ttdeci">#define IP_PROTO_IGMP</div><div class="ttdef"><b>Definition:</b> <a href="prot_2ip_8h_source.html#l00043">ip.h:43</a></div></div>
<div class="ttc" id="ainet__chksum_8h_html_a34f1aa1587562a09e11b704b51bab043"><div class="ttname"><a href="inet__chksum_8h.html#a34f1aa1587562a09e11b704b51bab043">inet_chksum</a></div><div class="ttdeci">u16_t inet_chksum(const void *dataptr, u16_t len)</div><div class="ttdef"><b>Definition:</b> <a href="inet__chksum_8c_source.html#l00555">inet_chksum.c:555</a></div></div>
<div class="ttc" id="amem_8h_html"><div class="ttname"><a href="mem_8h.html">mem.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00075">err.h:75</a></div></div>
<div class="ttc" id="astructpbuf_html"><div class="ttname"><a href="structpbuf.html">pbuf</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00142">pbuf.h:142</a></div></div>
<div class="ttc" id="adebug_8h_html_a63a04edf7ff63c951bd8706711956cdb"><div class="ttname"><a href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a></div><div class="ttdeci">#define LWIP_DEBUGF(debug, message)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00164">debug.h:164</a></div></div>
<div class="ttc" id="ainet__chksum_8h_html"><div class="ttname"><a href="inet__chksum_8h.html">inet_chksum.h</a></div></div>
<div class="ttc" id="adebug_8h_html"><div class="ttname"><a href="debug_8h.html">debug.h</a></div></div>
<div class="ttc" id="aprot_2igmp_8h_html_a0f85ab43aac98cc525c4d21b45bb08c9"><div class="ttname"><a href="prot_2igmp_8h.html#a0f85ab43aac98cc525c4d21b45bb08c9">IGMP_MEMB_QUERY</a></div><div class="ttdeci">#define IGMP_MEMB_QUERY</div><div class="ttdef"><b>Definition:</b> <a href="prot_2igmp_8h_source.html#l00058">igmp.h:58</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="adef_8h_html_a0dfd02d7c09f9c698a5a7ecc0b7287ad"><div class="ttname"><a href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a></div><div class="ttdeci">#define PP_HTONS(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00079">def.h:79</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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