ReactOS Development > Doxygen

00001 /*
00002  * COPYRIGHT:   See COPYING in the top level directory
00003  * PROJECT:     ReactOS TCP/IP protocol driver
00004  * FILE:        tcpip/routines.c
00005  * PURPOSE:     Common routines
00006  * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
00007  * REVISIONS:
00008  *   CSH 01/08-2000 Created
00009  */
00010 
00011 #include "precomp.h"
00012 
00013 static UINT RandomNumber = 0x12345678;
00014 
00015 
00016 UINT Random(
00017     VOID)
00018 /*
00019  * FUNCTION: Returns a pseudo random number
00020  * RETURNS:
00021  *     Pseudo random number
00022  */
00023 {
00024     RandomNumber ^= 0x78563412;
00025 
00026     return RandomNumber;
00027 }
00028 
00029 #if DBG
00030 static VOID DisplayIPHeader(
00031     PCHAR Header,
00032     UINT Length)
00033 {
00034     /* FIXME: IPv4 only */
00035     PIPv4_HEADER IPHeader = (PIPv4_HEADER)Header;
00036 
00037     DbgPrint("IPv4 header:\n");
00038     DbgPrint("VerIHL: 0x%x (version 0x%x, length %d 32-bit words)\n",
00039       IPHeader->VerIHL, (IPHeader->VerIHL & 0xF0) >> 4, IPHeader->VerIHL & 0x0F);
00040     DbgPrint("  Tos: %d\n", IPHeader->Tos);
00041     DbgPrint("  TotalLength: %d\n", WN2H(IPHeader->TotalLength));
00042     DbgPrint("  Id: %d\n", WN2H(IPHeader->Id));
00043     DbgPrint("  FlagsFragOfs: 0x%x (offset 0x%x)\n", WN2H(IPHeader->FlagsFragOfs), WN2H(IPHeader->FlagsFragOfs) & IPv4_FRAGOFS_MASK);
00044     if ((WN2H(IPHeader->FlagsFragOfs) & IPv4_DF_MASK) > 0) DbgPrint("    IPv4_DF - Don't fragment\n");
00045     if ((WN2H(IPHeader->FlagsFragOfs) & IPv4_MF_MASK) > 0) DbgPrint("    IPv4_MF - More fragments\n");
00046     DbgPrint("  Ttl: %d\n", IPHeader->Ttl);
00047     DbgPrint("  Protocol: %d\n", IPHeader->Protocol);
00048     DbgPrint("  Checksum: 0x%x\n", WN2H(IPHeader->Checksum));
00049     DbgPrint("  SrcAddr: %d.%d.%d.%d\n",
00050       ((IPHeader->SrcAddr >> 0) & 0xFF), ((IPHeader->SrcAddr >> 8) & 0xFF),
00051       ((IPHeader->SrcAddr >> 16) & 0xFF), ((IPHeader->SrcAddr >> 24) & 0xFF));
00052     DbgPrint("  DstAddr: %d.%d.%d.%d\n",
00053       ((IPHeader->DstAddr >> 0) & 0xFF), ((IPHeader->DstAddr >> 8) & 0xFF),
00054       ((IPHeader->DstAddr >> 16) & 0xFF), ((IPHeader->DstAddr >> 24) & 0xFF));
00055 }
00056 
00057 #endif
00058 
00059 VOID DisplayIPPacket(
00060     PIP_PACKET IPPacket)
00061 {
00062 #if DBG
00063     UINT Length;
00064     PCHAR CharBuffer;
00065 
00066     if ((DbgQueryDebugFilterState(DPFLTR_TCPIP_ID, DEBUG_PBUFFER | DPFLTR_MASK) != TRUE) ||
00067         (DbgQueryDebugFilterState(DPFLTR_TCPIP_ID, DEBUG_IP | DPFLTR_MASK) != TRUE)) {
00068         return;
00069     }
00070 
00071     if (!IPPacket) {
00072         TI_DbgPrint(MIN_TRACE, ("Cannot display null packet.\n"));
00073         return;
00074     }
00075 
00076     TI_DbgPrint(MIN_TRACE, ("IPPacket is at (0x%X).\n", IPPacket));
00077     TI_DbgPrint(MIN_TRACE, ("Header buffer is at (0x%X).\n", IPPacket->Header));
00078     TI_DbgPrint(MIN_TRACE, ("Header size is (%d).\n", IPPacket->HeaderSize));
00079     TI_DbgPrint(MIN_TRACE, ("TotalSize (%d).\n", IPPacket->TotalSize));
00080     TI_DbgPrint(MIN_TRACE, ("NdisPacket (0x%X).\n", IPPacket->NdisPacket));
00081 
00082     CharBuffer = IPPacket->Header;
00083     Length = IPPacket->HeaderSize;
00084     DisplayIPHeader(CharBuffer, Length);
00085 #endif
00086 }
00087
Generated on Sun May 27 2012 04:28:04 for ReactOS by
1.7.6.1