mirror of
https://github.com/Zeal-Operating-System/ZealOS.git
synced 2024-12-29 00:36:32 +00:00
83 lines
5.4 KiB
HTML
Executable file
83 lines
5.4 KiB
HTML
Executable file
<!DOCTYPE HTML>
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
|
|
<meta name="generator" content="ZealOS V1.08">
|
|
<style type="text/css">
|
|
body {background-color:#1f1f1f;}
|
|
.cF0{color:#e3e3e3;background-color:#1f1f1f;}
|
|
.cF1{color:#4f84a6;background-color:#1f1f1f;}
|
|
.cF2{color:#73a255;background-color:#1f1f1f;}
|
|
.cF3{color:#297582;background-color:#1f1f1f;}
|
|
.cF4{color:#b34f4b;background-color:#1f1f1f;}
|
|
.cF5{color:#8a52c3;background-color:#1f1f1f;}
|
|
.cF6{color:#b7822f;background-color:#1f1f1f;}
|
|
.cF7{color:#444444;background-color:#1f1f1f;}
|
|
.cF8{color:#6d6d6d;background-color:#1f1f1f;}
|
|
.cF9{color:#94bfde;background-color:#1f1f1f;}
|
|
.cFA{color:#a1ce97;background-color:#1f1f1f;}
|
|
.cFB{color:#6db4be;background-color:#1f1f1f;}
|
|
.cFC{color:#e88e88;background-color:#1f1f1f;}
|
|
.cFD{color:#ca94e8;background-color:#1f1f1f;}
|
|
.cFE{color:#d4b475;background-color:#1f1f1f;}
|
|
.cFF{color:#1f1f1f;background-color:#1f1f1f;}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<pre style="font-family:monospace;font-size:12pt">
|
|
<a name="l1"></a><span class=cF1>class</span><span class=cF0> CEthernetFrame
|
|
<a name="l2"></a>{
|
|
<a name="l3"></a> </span><span class=cF1>U8</span><span class=cF0> source_address[</span><span class=cFE>6</span><span class=cF0>];
|
|
<a name="l4"></a> </span><span class=cF1>U8</span><span class=cF0> padding[</span><span class=cFE>2</span><span class=cF0>];
|
|
<a name="l5"></a> </span><span class=cF1>U8</span><span class=cF0> destination_address[</span><span class=cFE>6</span><span class=cF0>];
|
|
<a name="l6"></a> </span><span class=cF9>U16</span><span class=cF0> ethertype;
|
|
<a name="l7"></a>
|
|
<a name="l8"></a> </span><span class=cF1>U8</span><span class=cF0> *data;
|
|
<a name="l9"></a>
|
|
<a name="l10"></a> </span><span class=cF9>I64</span><span class=cF0> length;
|
|
<a name="l11"></a>};
|
|
<a name="l12"></a>
|
|
<a name="l13"></a></span><span class=cF1>class</span><span class=cF0> CEthernetGlobals
|
|
<a name="l14"></a>{
|
|
<a name="l15"></a> </span><span class=cF1>U8</span><span class=cF0> ethernet_null[</span><span class=cFE>6</span><span class=cF0>];
|
|
<a name="l16"></a> </span><span class=cF1>U8</span><span class=cF0> ethernet_broadcast[</span><span class=cFE>6</span><span class=cF0>];
|
|
<a name="l17"></a>
|
|
<a name="l18"></a>} ethernet_globals;
|
|
<a name="l19"></a>
|
|
<a name="l20"></a></span><span class=cF1>U0</span><span class=cF0> EthernetGlobalsInit()
|
|
<a name="l21"></a>{
|
|
<a name="l22"></a> </span><span class=cF9>I64</span><span class=cF0> i;
|
|
<a name="l23"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i < </span><span class=cFE>6</span><span class=cF0>; i++)
|
|
<a name="l24"></a> </span><span class=cF7>{</span><span class=cF0>
|
|
<a name="l25"></a> ethernet_globals.ethernet_null[i] = </span><span class=cFE>0</span><span class=cF0>;
|
|
<a name="l26"></a> ethernet_globals.ethernet_broadcast[i] = </span><span class=cFE>0xFF</span><span class=cF0>;
|
|
<a name="l27"></a> </span><span class=cF7>}</span><span class=cF0>
|
|
<a name="l28"></a>}
|
|
<a name="l29"></a>
|
|
<a name="l30"></a></span><span class=cF2>//TODO: check length , figure out the length+4 </span><span class=cF0>
|
|
<a name="l31"></a></span><span class=cF1>U0</span><span class=cF0> EthernetFrameParse(CEthernetFrame *frame_out, </span><span class=cF1>U8</span><span class=cF0> *frame, </span><span class=cF9>U16</span><span class=cF0> length)
|
|
<a name="l32"></a>{
|
|
<a name="l33"></a> </span><span class=cF2>//TODO: Check length ! We need to figure out what</span><span class=cF0>
|
|
<a name="l34"></a> </span><span class=cF2>//lengths are appropriate</span><span class=cF0>
|
|
<a name="l35"></a>
|
|
<a name="l36"></a> </span><span class=cF2>//Shrine also says MemCopy has a</span><span class=cF0>
|
|
<a name="l37"></a> </span><span class=cF2>//high overhead. Almost tempted to say that means that a lot</span><span class=cF0>
|
|
<a name="l38"></a> </span><span class=cF2>//of the current system should be done with less extra allocation</span><span class=cF0>
|
|
<a name="l39"></a> </span><span class=cF2>//altogether, more passing.</span><span class=cF0>
|
|
<a name="l40"></a> </span><span class=cF2>//In practice, MemCopy causes the most slowdown on bare-metal.</span><span class=cF0>
|
|
<a name="l41"></a>
|
|
<a name="l42"></a> NetLog(</span><span class=cF6>"ETHERNET FRAME PARSE: Parsing frame, copying out to frame_out param."</span><span class=cF0>);
|
|
<a name="l43"></a>
|
|
<a name="l44"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(frame_out->destination_address, frame, MAC_ADDRESS_LENGTH);
|
|
<a name="l45"></a>
|
|
<a name="l46"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(frame_out->source_address, frame + MAC_ADDRESS_LENGTH, MAC_ADDRESS_LENGTH);
|
|
<a name="l47"></a>
|
|
<a name="l48"></a> frame_out->ethertype = frame[ETHERNET_ETHERTYPE_OFFSET + </span><span class=cFE>1</span><span class=cF0>] | frame[ETHERNET_ETHERTYPE_OFFSET] << </span><span class=cFE>8</span><span class=cF0>;
|
|
<a name="l49"></a>
|
|
<a name="l50"></a> frame_out->data = frame + ETHERNET_DATA_OFFSET;
|
|
<a name="l51"></a>
|
|
<a name="l52"></a> frame_out->length = length - ETHERNET_MAC_HEADER_LENGTH - </span><span class=cFE>4</span><span class=cF0>; </span><span class=cF2>// He has a comment literally just saying "??". + or - 4?</span><span class=cF0>
|
|
<a name="l53"></a>}
|
|
<a name="l54"></a>
|
|
<a name="l55"></a>EthernetGlobalsInit;</span></pre></body>
|
|
</html>
|