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Freescale mcu OpenTCP-1.0.4.doc.html.zip 文档

00377                 <span class="keywordflow">return</span>(-1);
00378 
00379         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != 0x03)
00380                 <span class="keywordflow">return</span>(-1);
00381 
00382         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != 0x32)
00383                 <span class="keywordflow">return</span>(-1);
00384 
00385         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != 0xF1)
00386                 <span class="keywordflow">return</span>(-1);
00387 
00388         <span class="comment">/* Skip elapsed, unused, client address */</span>
00389 
00390         <span class="keywordflow">for</span>(i=0; i&lt;8; i++)
00391                 <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00392 
00393         <span class="comment">/* Get IP       */</span>
00394 
00395         ip = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00396         ip &lt;&lt;= 8;
00397         ip |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00398         ip &lt;&lt;= 8;
00399         ip |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00400         ip &lt;&lt;= 8;
00401         ip |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00402 
00403         <span class="comment">/* Skip server ip &amp; bootp router address        */</span>
00404 
00405         <span class="keywordflow">for</span>(i=0; i&lt;8; i++)
00406                 <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00407 
00408         <span class="comment">/* Check MAC                                                            */</span>
00409 
00410         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != localmachine.localHW[5])
00411                 <span class="keywordflow">return</span>(-1);
00412 
00413         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != localmachine.localHW[4])
00414                 <span class="keywordflow">return</span>(-1);
00415 
00416         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != localmachine.localHW[3])
00417                 <span class="keywordflow">return</span>(-1);
00418 
00419         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != localmachine.localHW[2])
00420                 <span class="keywordflow">return</span>(-1);
00421 
00422         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != localmachine.localHW[1])
00423                 <span class="keywordflow">return</span>(-1);
00424 
00425         <span class="keywordflow">if</span>(     <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != localmachine.localHW[0])
00426                 <span class="keywordflow">return</span>(-1);
00427 
00428         <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00429         <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00430 
00431         <span class="keywordflow">for</span>(i=0; i&lt;200; i++)
00432                 <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00433 
00434         <span class="comment">/* Check options        */</span>
00435 
00436         dlen -= 236;
00437 
00438         i = 0;
00439 
00440         <span class="keywordflow">while</span>(i&lt;dlen) {
00441                 ch = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00442                 i++;
00443 
00444                 <span class="keywordflow">if</span>( (ch != <a class="code" href="bootp_8h.html#a8">BOOTP_OPTION_SUBNETMASK</a>) &amp;&amp; (ch != <a class="code" href="bootp_8h.html#a9">BOOTP_OPTION_DEFGW</a>) )     {
00445                         <span class="comment">/* Not supported option, skip it        */</span>
00446 
00447                         j = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00448                         i++;
00449 
00450                         <span class="keywordflow">if</span>(j &gt;= 2) {
00451                                 j -= 2;
00452 
00453                                 <span class="keywordflow">while</span>(j--) {
00454                                         <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00455                                         i++;
00456                                 }
00457                         }
00458 
00459                         <span class="keywordflow">continue</span>;
00460 
00461                 }
00462 
00463                 <span class="keywordflow">if</span>( ch == <a class="code" href="bootp_8h.html#a8">BOOTP_OPTION_SUBNETMASK</a>) {
00464                         <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();                    <span class="comment">/* Skip totlen  */</span>
00465                         nm = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00466                         nm &lt;&lt;= 8;
00467                         nm |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00468                         nm &lt;&lt;= 8;
00469                         nm |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00470                         nm &lt;&lt;= 8;
00471                         nm |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00472 
00473                         i += 5;
00474 
00475                 }
00476 
00477                 <span class="keywordflow">if</span>( ch == <a class="code" href="bootp_8h.html#a9">BOOTP_OPTION_DEFGW</a>) {
00478                         j = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();                <span class="comment">/* Get totlen   */</span>
00479                         dgw = <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00480                         dgw &lt;&lt;= 8;
00481                         dgw |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00482                         dgw &lt;&lt;= 8;
00483                         dgw |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00484                         dgw &lt;&lt;= 8;
00485                         dgw |= <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00486 
00487                         i += 5;
00488 
00489                         <span class="comment">/* Skip others  */</span>
00490 
00491                         <span class="keywordflow">if</span>( j&gt;5 ) {
00492                                 j -= 5;
00493 
00494                                 <span class="keywordflow">while</span>(j--) {
00495                                         <a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>();
00496                                         i++;
00497                                 }
00498 
00499                         }
00500 
00501                 }
00502 
00503         }
00504 
00505         <span class="comment">/* Store parameters             */</span>
00506 
00507         localmachine.localip = ip;
00508         localmachine.defgw = dgw;
00509         localmachine.netmask = nm;
00510 
00511         <span class="comment">/* Change state */</span>
00512 
00513         <a class="code" href="bootp_8c.html#a6">bootp</a>.state = <a class="code" href="bootp_8h.html#a7">BOOTPC_STATE_REPLY_GET</a>;
00514 
00515         <span class="keywordflow">return</span>(1);
00516 
00517 }
00518 
00519 
00520 
00521 
00522 
</pre></div><hr><address style="align: right;"><small>Generated on Sun Aug 3 20:32:59 2003 for OpenTCP by
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