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TomAwezome 1b75d91002 Fix Mount AHCI Port selection. 
Add arg to SATARep to specify drive types to show.
Add checks in AHCIPortInit to verify port signatures, add helper method to get signatures from port.
2021-08-02 16:40:05 -04:00

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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> ARP_HASHTABLE_SIZE </span><span class=cFE>1024</span><span class=cF0>
<a name="l2"></a>
<a name="l3"></a>#</span><span class=cF1>define</span><span class=cF0> HTT_ARP </span><span class=cFE>0x00100</span><span class=cF0> </span><span class=cF2>//identical to HTT_DICT_WORD</span><span class=cF0>
<a name="l4"></a>
<a name="l5"></a>#</span><span class=cF1>define</span><span class=cF0> ARP_REQUEST </span><span class=cFE>0x01</span><span class=cF0>
<a name="l6"></a>#</span><span class=cF1>define</span><span class=cF0> ARP_REPLY </span><span class=cFE>0x02</span><span class=cF0>
<a name="l7"></a>
<a name="l8"></a></span><span class=cF1>class</span><span class=cF0> CARPHeader
<a name="l9"></a>{
<a name="l10"></a> </span><span class=cF9>U16</span><span class=cF0> hardware_type;
<a name="l11"></a> </span><span class=cF9>U16</span><span class=cF0> protocol_type;
<a name="l12"></a>
<a name="l13"></a> </span><span class=cF1>U8</span><span class=cF0> hardware_addr_len;
<a name="l14"></a> </span><span class=cF1>U8</span><span class=cF0> protocol_addr_len;
<a name="l15"></a>
<a name="l16"></a> </span><span class=cF9>U16</span><span class=cF0> operation;
<a name="l17"></a>
<a name="l18"></a> </span><span class=cF1>U8</span><span class=cF0> sender_hardware_addr[MAC_ADDRESS_LENGTH];
<a name="l19"></a> </span><span class=cF9>U32</span><span class=cF0> sender_protocol_addr;
<a name="l20"></a>
<a name="l21"></a> </span><span class=cF1>U8</span><span class=cF0> target_hardware_addr[MAC_ADDRESS_LENGTH];
<a name="l22"></a> </span><span class=cF9>U32</span><span class=cF0> target_protocol_addr;
<a name="l23"></a>
<a name="l24"></a>};
<a name="l25"></a>
<a name="l26"></a></span><span class=cF1>class</span><span class=cF0> CARPHash:</span><span class=cF9>CHash</span><span class=cF0>
<a name="l27"></a>{ </span><span class=cF2>//store U32 ip_address as CHash-&gt;str U8*, MStrPrint(&quot;%X&quot;)</span><span class=cF0>
<a name="l28"></a></span><span class=cF2>//</span><span class=cF0> </span><span class=cF2>U32 ip_address;</span><span class=cF0>
<a name="l29"></a> </span><span class=cF1>U8</span><span class=cF0> mac_address[MAC_ADDRESS_LENGTH];
<a name="l30"></a>};
<a name="l31"></a>
<a name="l32"></a></span><span class=cF1>class</span><span class=cF0> CARPGlobals
<a name="l33"></a>{
<a name="l34"></a> </span><span class=cF9>U32</span><span class=cF0> local_ipv4; </span><span class=cF2>// stored in Big Endian</span><span class=cF0>
<a name="l35"></a>
<a name="l36"></a>} arp_globals;
<a name="l37"></a>
<a name="l38"></a></span><span class=cF9>CHashTable</span><span class=cF0> *arp_cache = </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l39"></a>
<a name="l40"></a></span><span class=cF1>U0</span><span class=cF0> ARPCacheInit()
<a name="l41"></a>{
<a name="l42"></a> arp_cache = </span><span class=cF5>HashTableNew</span><span class=cF0>(ARP_HASHTABLE_SIZE);
<a name="l43"></a> arp_globals.local_ipv4 = </span><span class=cFE>0</span><span class=cF0>;
<a name="l44"></a>}
<a name="l45"></a>
<a name="l46"></a></span><span class=cF9>I64</span><span class=cF0> ARPSend(</span><span class=cF9>U16</span><span class=cF0> operation,
<a name="l47"></a> </span><span class=cF1>U8</span><span class=cF0> *dest_mac_address,
<a name="l48"></a> </span><span class=cF1>U8</span><span class=cF0> *send_mac_address,
<a name="l49"></a> </span><span class=cF9>U32</span><span class=cF0> send_ip,
<a name="l50"></a> </span><span class=cF1>U8</span><span class=cF0> *target_mac_address,
<a name="l51"></a> </span><span class=cF9>U32</span><span class=cF0> target_ip)
<a name="l52"></a>{</span><span class=cF2>//method currently assumes send_ and target_ip EndianU16 already...</span><span class=cF0>
<a name="l53"></a>
<a name="l54"></a> </span><span class=cF1>U8</span><span class=cF0> *arp_frame;
<a name="l55"></a> CARPHeader *header;
<a name="l56"></a>
<a name="l57"></a> </span><span class=cF9>I64</span><span class=cF0> de_index = EthernetFrameAllocate(&amp;arp_frame,
<a name="l58"></a> send_mac_address,
<a name="l59"></a> dest_mac_address,
<a name="l60"></a> ETHERTYPE_ARP,
<a name="l61"></a> </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>CARPHeader</span><span class=cF7>)</span><span class=cF0>);
<a name="l62"></a>
<a name="l63"></a> </span><span class=cF1>if</span><span class=cF0> (de_index &lt; </span><span class=cFE>0</span><span class=cF0>)
<a name="l64"></a> </span><span class=cF1>return</span><span class=cF0> de_index; </span><span class=cF2>// error state</span><span class=cF0>
<a name="l65"></a>
<a name="l66"></a> header = arp_frame;
<a name="l67"></a>
<a name="l68"></a> header-&gt;hardware_type = </span><span class=cF5>EndianU16</span><span class=cF0>(HTYPE_ETHERNET);
<a name="l69"></a> header-&gt;protocol_type = </span><span class=cF5>EndianU16</span><span class=cF0>(ETHERTYPE_IPV4);
<a name="l70"></a> header-&gt;hardware_addr_len = MAC_ADDRESS_LENGTH;
<a name="l71"></a> header-&gt;protocol_addr_len = IP_ADDRESS_LENGTH;
<a name="l72"></a> header-&gt;operation = </span><span class=cF5>EndianU16</span><span class=cF0>(operation);
<a name="l73"></a>
<a name="l74"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(header-&gt;sender_hardware_addr, send_mac_address, MAC_ADDRESS_LENGTH);
<a name="l75"></a> header-&gt;sender_protocol_addr = send_ip;
<a name="l76"></a>
<a name="l77"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(header-&gt;target_hardware_addr, target_mac_address, MAC_ADDRESS_LENGTH);
<a name="l78"></a> header-&gt;target_protocol_addr = target_ip;
<a name="l79"></a>
<a name="l80"></a> EthernetFrameFinish(de_index);
<a name="l81"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l82"></a>}
<a name="l83"></a>
<a name="l84"></a>CARPHash *ARPCacheFind(</span><span class=cF9>U32</span><span class=cF0> ip_address)
<a name="l85"></a>{
<a name="l86"></a> </span><span class=cF1>U8</span><span class=cF0> *ip_string = </span><span class=cF5>MStrPrint</span><span class=cF0>(</span><span class=cF6>&quot;%X&quot;</span><span class=cF0>, ip_address);
<a name="l87"></a> CARPHash *entry = </span><span class=cF5>HashFind</span><span class=cF0>(ip_string, arp_cache, HTT_ARP);
<a name="l88"></a>
<a name="l89"></a> </span><span class=cF1>if</span><span class=cF0> (entry == </span><span class=cF3>NULL</span><span class=cF0>)
<a name="l90"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l91"></a> NetLog(</span><span class=cF6>&quot;ARP CACHE FIND BY IP: Could not find an IP in ARP cache.&quot;</span><span class=cF0>);
<a name="l92"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l93"></a>
<a name="l94"></a> </span><span class=cF5>Free</span><span class=cF0>(ip_string);
<a name="l95"></a> </span><span class=cF1>return</span><span class=cF0> entry;
<a name="l96"></a>}
<a name="l97"></a>
<a name="l98"></a>CARPHash *ARPCachePut(</span><span class=cF9>U32</span><span class=cF0> ip_address, </span><span class=cF1>U8</span><span class=cF0> *mac_address)
<a name="l99"></a>{
<a name="l100"></a> CARPHash *entry;
<a name="l101"></a>
<a name="l102"></a> NetLog(</span><span class=cF6>&quot;ARP CACHE PUT: Attempting to look for entry in ARP Cache.&quot;</span><span class=cF0>);
<a name="l103"></a>
<a name="l104"></a> entry = ARPCacheFind(ip_address);
<a name="l105"></a>
<a name="l106"></a> </span><span class=cF1>if</span><span class=cF0> (!entry)
<a name="l107"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l108"></a> entry = </span><span class=cF5>CAlloc</span><span class=cF0>(</span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>CARPHash</span><span class=cF7>)</span><span class=cF0>);
<a name="l109"></a>
<a name="l110"></a> NetLog(</span><span class=cF6>&quot;ARP CACHE PUT: Attempting add to cache: addr, mac:&quot;</span><span class=cF0>);
<a name="l111"></a> NetLog(</span><span class=cF6>&quot; 0x%0X, 0x%0X 0x%0X 0x%0X 0x%0X 0x%0X 0x%0X&quot;</span><span class=cF0>,
<a name="l112"></a> ip_address, mac_address[</span><span class=cFE>0</span><span class=cF0>], mac_address[</span><span class=cFE>1</span><span class=cF0>], mac_address[</span><span class=cFE>2</span><span class=cF0>], mac_address[</span><span class=cFE>3</span><span class=cF0>], mac_address[</span><span class=cFE>4</span><span class=cF0>], mac_address[</span><span class=cFE>5</span><span class=cF0>]);
<a name="l113"></a>
<a name="l114"></a> entry-&gt;str = </span><span class=cF5>MStrPrint</span><span class=cF0>(</span><span class=cF6>&quot;%X&quot;</span><span class=cF0>, ip_address);
<a name="l115"></a> entry-&gt;type = HTT_ARP;
<a name="l116"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(entry-&gt;mac_address, mac_address, </span><span class=cFE>6</span><span class=cF0>);
<a name="l117"></a>
<a name="l118"></a> </span><span class=cF5>HashAdd</span><span class=cF0>(entry, arp_cache);
<a name="l119"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l120"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l121"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l122"></a> NetWarn(</span><span class=cF6>&quot;ARP CACHE Put: Entry was already found in Cache. Overwriting.&quot;</span><span class=cF0>);
<a name="l123"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(entry-&gt;mac_address, mac_address, </span><span class=cFE>6</span><span class=cF0>);
<a name="l124"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l125"></a>
<a name="l126"></a> </span><span class=cF1>return</span><span class=cF0> entry;
<a name="l127"></a>}
<a name="l128"></a>
<a name="l129"></a></span><span class=cF1>U0</span><span class=cF0> ARPLocalIPV4Set(</span><span class=cF9>U32</span><span class=cF0> ip_address)
<a name="l130"></a>{ </span><span class=cF2>// takes in little endian IP, stores into globals as Big Endian</span><span class=cF0>
<a name="l131"></a> arp_globals.local_ipv4 = </span><span class=cF5>EndianU32</span><span class=cF0>(ip_address);
<a name="l132"></a>
<a name="l133"></a> ARPSend(ARP_REPLY,
<a name="l134"></a> ethernet_globals.ethernet_broadcast,
<a name="l135"></a> EthernetMACGet,
<a name="l136"></a> arp_globals.local_ipv4,
<a name="l137"></a> ethernet_globals.ethernet_broadcast,
<a name="l138"></a> arp_globals.local_ipv4);
<a name="l139"></a>}
<a name="l140"></a>
<a name="l141"></a></span><span class=cF9>I64</span><span class=cF0> ARPHandler(CEthernetFrame *ethernet_frame)
<a name="l142"></a>{ </span><span class=cF2>// Use of ARPHandler must account for -1 error codes.</span><span class=cF0>
<a name="l143"></a> CARPHeader *header;
<a name="l144"></a> </span><span class=cF9>U16</span><span class=cF0> operation;
<a name="l145"></a>
<a name="l146"></a> NetLog(</span><span class=cF6>&quot;ARP HANDLER: Entering ARP Handler.&quot;</span><span class=cF0>);
<a name="l147"></a>
<a name="l148"></a> </span><span class=cF1>if</span><span class=cF0> (ethernet_frame-&gt;ethertype != ETHERTYPE_ARP)
<a name="l149"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l150"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Caught wrong frame ethertype.&quot;</span><span class=cF0>);
<a name="l151"></a> </span><span class=cF1>return</span><span class=cF0> -</span><span class=cFE>1</span><span class=cF0>;
<a name="l152"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l153"></a> </span><span class=cF1>if</span><span class=cF0> (ethernet_frame-&gt;length &lt; </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>CARPHeader</span><span class=cF7>)</span><span class=cF0>)
<a name="l154"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l155"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Caught wrong frame length.&quot;</span><span class=cF0>);
<a name="l156"></a> </span><span class=cF1>return</span><span class=cF0> -</span><span class=cFE>1</span><span class=cF0>;
<a name="l157"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l158"></a>
<a name="l159"></a> header = ethernet_frame-&gt;data;
<a name="l160"></a> operation = </span><span class=cF5>EndianU16</span><span class=cF0>(header-&gt;operation);
<a name="l161"></a>
<a name="l162"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>EndianU16</span><span class=cF7>(</span><span class=cF0>header-&gt;hardware_type</span><span class=cF7>)</span><span class=cF0> != HTYPE_ETHERNET)
<a name="l163"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l164"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Caught wrong frame hardware type.&quot;</span><span class=cF0>);
<a name="l165"></a> </span><span class=cF1>return</span><span class=cF0> -</span><span class=cFE>1</span><span class=cF0>;
<a name="l166"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l167"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>EndianU16</span><span class=cF7>(</span><span class=cF0>header-&gt;protocol_type</span><span class=cF7>)</span><span class=cF0> != ETHERTYPE_IPV4)
<a name="l168"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l169"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Caught wrong frame protocol type.&quot;</span><span class=cF0>);
<a name="l170"></a> </span><span class=cF1>return</span><span class=cF0> -</span><span class=cFE>1</span><span class=cF0>;
<a name="l171"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l172"></a> </span><span class=cF1>if</span><span class=cF0> (header-&gt;hardware_addr_len != HLEN_ETHERNET)
<a name="l173"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l174"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Caught wrong frame hardware address length.&quot;</span><span class=cF0>);
<a name="l175"></a> </span><span class=cF1>return</span><span class=cF0> -</span><span class=cFE>1</span><span class=cF0>;
<a name="l176"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l177"></a> </span><span class=cF1>if</span><span class=cF0> (header-&gt;protocol_addr_len != PLEN_IPV4)
<a name="l178"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l179"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Caught wrong frame protocol address length.&quot;</span><span class=cF0>);
<a name="l180"></a> </span><span class=cF1>return</span><span class=cF0> -</span><span class=cFE>1</span><span class=cF0>;
<a name="l181"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l182"></a>
<a name="l183"></a> </span><span class=cF1>switch</span><span class=cF0> (operation)
<a name="l184"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l185"></a> </span><span class=cF1>case</span><span class=cF0> ARP_REQUEST:
<a name="l186"></a> </span><span class=cF1>if</span><span class=cF0> (header-&gt;target_protocol_addr == arp_globals.local_ipv4)
<a name="l187"></a> {
<a name="l188"></a> NetLog(</span><span class=cF6>&quot;ARP HANDLER: Saw request, sending back reply.&quot;</span><span class=cF0>);
<a name="l189"></a> ARPSend(ARP_REPLY,
<a name="l190"></a> header-&gt;sender_hardware_addr,
<a name="l191"></a> EthernetMACGet,
<a name="l192"></a> arp_globals.local_ipv4,
<a name="l193"></a> header-&gt;sender_hardware_addr,
<a name="l194"></a> header-&gt;sender_protocol_addr);
<a name="l195"></a> }
<a name="l196"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l197"></a> NetWarn(</span><span class=cF6>&quot;ARP HANDLER: Saw request, target IP address is not this machine.&quot;</span><span class=cF0>);
<a name="l198"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l199"></a>
<a name="l200"></a> </span><span class=cF1>case</span><span class=cF0> ARP_REPLY:
<a name="l201"></a> NetLog(</span><span class=cF6>&quot;ARP HANDLER: Saw reply, putting into ARP Cache.&quot;</span><span class=cF0>);
<a name="l202"></a> ARPCachePut(</span><span class=cF5>EndianU32</span><span class=cF7>(</span><span class=cF0>header-&gt;sender_protocol_addr</span><span class=cF7>)</span><span class=cF0>, header-&gt;sender_hardware_addr);
<a name="l203"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l204"></a>
<a name="l205"></a> </span><span class=cF1>default</span><span class=cF0>:
<a name="l206"></a> NetErr(</span><span class=cF6>&quot;ARP HANDLER: Unrecognized operation: 0x%X&quot;</span><span class=cF0>, operation);
<a name="l207"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l208"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l209"></a>
<a name="l210"></a> NetLog(</span><span class=cF6>&quot;ARP HANDLER: Exiting.&quot;</span><span class=cF0>);
<a name="l211"></a>}
<a name="l212"></a>
<a name="l213"></a></span><span class=cF1>U0</span><span class=cF0> ARPRep()
<a name="l214"></a>{
<a name="l215"></a> </span><span class=cF9>I64</span><span class=cF0> i, j;
<a name="l216"></a> CARPHash *temp_hash;
<a name="l217"></a> </span><span class=cF9>U32</span><span class=cF0> address;
<a name="l218"></a>
<a name="l219"></a> </span><span class=cF6>&quot;$LTBLUE$ARP Report:$FG$\n\n&quot;</span><span class=cF0>;
<a name="l220"></a> </span><span class=cF6>&quot;ARP Local Address:</span><span class=cF0> </span><span class=cF6>%d.%d.%d.%d\n\n&quot;</span><span class=cF0>,
<a name="l221"></a> arp_globals.local_ipv4.u8[</span><span class=cFE>0</span><span class=cF0>],
<a name="l222"></a> arp_globals.local_ipv4.u8[</span><span class=cFE>1</span><span class=cF0>],
<a name="l223"></a> arp_globals.local_ipv4.u8[</span><span class=cFE>2</span><span class=cF0>],
<a name="l224"></a> arp_globals.local_ipv4.u8[</span><span class=cFE>3</span><span class=cF0>];
<a name="l225"></a>
<a name="l226"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt;= arp_cache-&gt;mask; i++)
<a name="l227"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l228"></a> temp_hash = arp_cache-&gt;body[i];
<a name="l229"></a>
<a name="l230"></a> </span><span class=cF1>while</span><span class=cF0> (temp_hash)
<a name="l231"></a> {
<a name="l232"></a> </span><span class=cF6>&quot;ARP Hash @ 0x%X:\n&quot;</span><span class=cF0>, temp_hash;
<a name="l233"></a>
<a name="l234"></a> address = </span><span class=cF5>EndianU32</span><span class=cF0>(</span><span class=cF5>Str2I64</span><span class=cF7>(</span><span class=cF0>temp_hash-&gt;str, </span><span class=cFE>16</span><span class=cF7>)(</span><span class=cF9>U32</span><span class=cF7>)</span><span class=cF0>);
<a name="l235"></a> </span><span class=cF6>&quot;</span><span class=cF0> </span><span class=cF6>IP Address:</span><span class=cF0> </span><span class=cF6>%d.%d.%d.%d\n&quot;</span><span class=cF0>,
<a name="l236"></a> address.u8[</span><span class=cFE>0</span><span class=cF0>], address.u8[</span><span class=cFE>1</span><span class=cF0>], address.u8[</span><span class=cFE>2</span><span class=cF0>], address.u8[</span><span class=cFE>3</span><span class=cF0>]; </span><span class=cF2>// todo: kludge</span><span class=cF0>
<a name="l237"></a>
<a name="l238"></a> </span><span class=cF6>&quot;</span><span class=cF0> </span><span class=cF6>MAC Address:</span><span class=cF0> </span><span class=cF6>&quot;;</span><span class=cF0>
<a name="l239"></a>
<a name="l240"></a> </span><span class=cF1>for</span><span class=cF0> (j = </span><span class=cFE>0</span><span class=cF0>; j &lt; MAC_ADDRESS_LENGTH; j++)
<a name="l241"></a> </span><span class=cF6>&quot;%02X &quot;</span><span class=cF0>, temp_hash-&gt;mac_address[j];
<a name="l242"></a>
<a name="l243"></a> </span><span class=cF6>&quot;\n\n&quot;</span><span class=cF0>;
<a name="l244"></a>
<a name="l245"></a> temp_hash = temp_hash-&gt;next;
<a name="l246"></a> }
<a name="l247"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l248"></a> </span><span class=cF6>&quot;\n&quot;</span><span class=cF0>;
<a name="l249"></a>}
<a name="l250"></a>
<a name="l251"></a>ARPCacheInit;</span></pre></body>
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