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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Copyright (C) 2016-2017, 2020, 2022, 2024 Kernkonzept GmbH.</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Author(s): Jean Wolter <jean.wolter@kernkonzept.com></span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * License: see LICENSE.spdx (in this directory or the directories above)</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include "mac_addr.h"</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include "virtio_net.h"</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include "virtio_net_buffer.h"</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include "vlan.h"</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include <l4/l4virtio/server/virtio></span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span></div>
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<div class="foldopen" id="foldopen00033" data-start="{" data-end="};">
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"><a class="line" href="classNet__transfer.html"> 33</a></span><span class="keyword">class </span><a class="code hl_class" href="classNet__transfer.html">Net_transfer</a></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span>{</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">virtual</span> <a class="code hl_class" href="classNet__transfer.html">~Net_transfer</a>() = <span class="keywordflow">default</span>;</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="classNet__transfer.html#a221a489d9df8a54c4e9d5df123aba126"> 41</a></span> <span class="keywordtype">void</span> <span class="keyword">const</span> *<a class="code hl_function" href="classNet__transfer.html#a221a489d9df8a54c4e9d5df123aba126">req_id</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _req_id; }</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"><a class="line" href="classNet__transfer.html#a03a0e6103c0f7d31bdce2150dc45e7c5"> 46</a></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classNet__transfer.html#a03a0e6103c0f7d31bdce2150dc45e7c5">copy_header</a>(Virtio_net::Hdr *dst_header) <span class="keyword">const</span> = 0;</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"><a class="line" href="classNet__transfer.html#ae6ef29e7ea5ef5e5e9577b0be3a3b62f"> 54</a></span> <a class="code hl_struct" href="structBuffer.html">Buffer</a> &<a class="code hl_function" href="classNet__transfer.html#ae6ef29e7ea5ef5e5e9577b0be3a3b62f">cur_buf</a>() { <span class="keywordflow">return</span> _cur_buf; }</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"><a class="line" href="classNet__transfer.html#a35cd3e24de6dc86e60e38f34ad9f5298"> 65</a></span> <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classNet__transfer.html#a35cd3e24de6dc86e60e38f34ad9f5298">done</a>() = 0;</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="keyword">protected</span>:</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <a class="code hl_struct" href="structBuffer.html">Buffer</a> _cur_buf;</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordtype">void</span> <span class="keyword">const</span> *_req_id;</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span>};</div>
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</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="keyword">class </span>Net_request</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span>{</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordtype">bool</span> has_vlan()<span class="keyword"> const</span></div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keyword"> </span>{</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">if</span> (!_pkt.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">pos</a> || _pkt.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">left</a> < 14)</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> uint8_t *p = <span class="keyword">reinterpret_cast<</span>uint8_t *<span class="keyword">></span>(_pkt.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">pos</a>);</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">return</span> p[12] == 0x81U && p[13] == 0x00U;</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> }</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> uint16_t vlan_id()<span class="keyword"> const</span></div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="keyword"> </span>{</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">if</span> (!has_vlan() || _pkt.left < 16)</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordflow">return</span> VLAN_ID_NATIVE;</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> uint8_t *p = <span class="keyword">reinterpret_cast<</span>uint8_t *<span class="keyword">></span>(_pkt.pos);</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">return</span> (uint16_t{p[14]} << 8 | p[15]) & 0xfffU;</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> }</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span></div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> uint8_t <span class="keyword">const</span> *buffer(<span class="keywordtype">size_t</span> *size)<span class="keyword"> const</span></div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="keyword"> </span>{</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> *size = _pkt.<a class="code hl_variable" href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">left</a>;</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast<</span>uint8_t <span class="keyword">const </span>*<span class="keyword">></span>(_pkt.pos);</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> }</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">void</span> dump_pkt()<span class="keyword"> const</span></div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="keyword"> </span>{</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> Dbg pkt_debug(Dbg::Packet, Dbg::Debug, <span class="stringliteral">"PKT"</span>);</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keywordflow">if</span> (pkt_debug.is_active())</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> {</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="comment">//pkt_debug.cprintf("\t");</span></div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="comment">//src_mac().print(pkt_debug);</span></div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="comment">//pkt_debug.cprintf(" -> ");</span></div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="comment">//dst_mac().print(pkt_debug);</span></div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="comment">//pkt_debug.cprintf("\n");</span></div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> </div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> Dbg pkt_trace(Dbg::Packet, Dbg::Trace, <span class="stringliteral">"PKT"</span>);</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">if</span> (pkt_trace.is_active() && _pkt.left >= 14)</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> {</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> uint8_t <span class="keyword">const</span> *packet = <span class="keyword">reinterpret_cast<</span>uint8_t <span class="keyword">const </span>*<span class="keyword">></span>(_pkt.pos);</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> pkt_trace.cprintf(<span class="stringliteral">"\n\tEthertype: "</span>);</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> uint16_t ether_type = uint16_t{packet[12]} << 8 | packet[13];</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keywordtype">char</span> <span class="keyword">const</span> *protocol;</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">switch</span> (ether_type)</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> {</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordflow">case</span> 0x0800: protocol = <span class="stringliteral">"IPv4"</span>; <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">case</span> 0x0806: protocol = <span class="stringliteral">"ARP"</span>; <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="keywordflow">case</span> 0x8100: protocol = <span class="stringliteral">"Vlan"</span>; <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keywordflow">case</span> 0x86dd: protocol = <span class="stringliteral">"IPv6"</span>; <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">case</span> 0x8863: protocol = <span class="stringliteral">"PPPoE Discovery"</span>; <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">case</span> 0x8864: protocol = <span class="stringliteral">"PPPoE Session"</span>; <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">default</span>: protocol = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> }</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keywordflow">if</span> (protocol)</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> pkt_trace.cprintf(<span class="stringliteral">"%s\n"</span>, protocol);</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">else</span></div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> pkt_trace.cprintf(<span class="stringliteral">"%04x\n"</span>, ether_type);</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> }</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> }</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> }</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> </div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span><span class="keyword">protected</span>:</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> Buffer _pkt;</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>};</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span></div>
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<div class="ttc" id="aclassNet__transfer_html"><div class="ttname"><a href="classNet__transfer.html">Net_transfer</a></div><div class="ttdoc">A network request to only a single destination.</div><div class="ttdef"><b>Definition</b> <a href="#l00033">request.h:34</a></div></div>
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<div class="ttc" id="aclassNet__transfer_html_a03a0e6103c0f7d31bdce2150dc45e7c5"><div class="ttname"><a href="classNet__transfer.html#a03a0e6103c0f7d31bdce2150dc45e7c5">Net_transfer::copy_header</a></div><div class="ttdeci">virtual void copy_header(Virtio_net::Hdr *dst_header) const =0</div><div class="ttdoc">Populate the virtio-net header for the destination.</div></div>
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<div class="ttc" id="aclassNet__transfer_html_a221a489d9df8a54c4e9d5df123aba126"><div class="ttname"><a href="classNet__transfer.html#a221a489d9df8a54c4e9d5df123aba126">Net_transfer::req_id</a></div><div class="ttdeci">void const * req_id() const</div><div class="ttdoc">Identifier for the underlying Net_request, used for logging purposes.</div><div class="ttdef"><b>Definition</b> <a href="#l00041">request.h:41</a></div></div>
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<div class="ttc" id="aclassNet__transfer_html_a35cd3e24de6dc86e60e38f34ad9f5298"><div class="ttname"><a href="classNet__transfer.html#a35cd3e24de6dc86e60e38f34ad9f5298">Net_transfer::done</a></div><div class="ttdeci">virtual bool done()=0</div><div class="ttdoc">Check whether the transfer has been completed, i.e.</div></div>
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<div class="ttc" id="aclassNet__transfer_html_ae6ef29e7ea5ef5e5e9577b0be3a3b62f"><div class="ttname"><a href="classNet__transfer.html#ae6ef29e7ea5ef5e5e9577b0be3a3b62f">Net_transfer::cur_buf</a></div><div class="ttdeci">Buffer & cur_buf()</div><div class="ttdoc">Buffer containing (a part of) the packet data.</div><div class="ttdef"><b>Definition</b> <a href="#l00054">request.h:54</a></div></div>
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<div class="ttc" id="astructBuffer_html"><div class="ttname"><a href="structBuffer.html">Buffer</a></div><div class="ttdoc">Data buffer used to transfer packets.</div><div class="ttdef"><b>Definition</b> <a href="virtio__net__buffer_8h_source.html#l00019">virtio_net_buffer.h:20</a></div></div>
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<div class="ttc" id="astructL4virtio_1_1Svr_1_1Data__buffer_html_a4c105bf354d6663f323efeb81c74ebc2"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Data__buffer.html#a4c105bf354d6663f323efeb81c74ebc2">L4virtio::Svr::Data_buffer::left</a></div><div class="ttdeci">l4_uint32_t left</div><div class="ttdoc">Bytes left in buffer.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00309">virtio:309</a></div></div>
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<div class="ttc" id="astructL4virtio_1_1Svr_1_1Data__buffer_html_ac58e770774164d220267be04fb97b551"><div class="ttname"><a href="structL4virtio_1_1Svr_1_1Data__buffer.html#ac58e770774164d220267be04fb97b551">L4virtio::Svr::Data_buffer::pos</a></div><div class="ttdeci">char * pos</div><div class="ttdoc">Current buffer position.</div><div class="ttdef"><b>Definition</b> <a href="virtio_source.html#l00308">virtio:308</a></div></div>
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<li class="navelem"><b>pkg</b></li><li class="navelem"><b>virtio-net-switch</b></li><li class="navelem"><b>server</b></li><li class="navelem"><b>switch</b></li><li class="navelem"><b>request.h</b></li>
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