reactos/lib/drivers/ip/transport/tcp/event.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS TCP/IP protocol driver
   4  * FILE:        transport/tcp/event.c
   5  * PURPOSE:     Transmission Control Protocol -- Events from oskittcp
   6  * PROGRAMMERS: Art Yerkes
   7  * REVISIONS:
   8  *   CSH 01/08-2000 Created
   9  */
  10
  11 #include "precomp.h"
  12
  13 int TCPSocketState(void *ClientData,
  14            void *WhichSocket,
  15            void *WhichConnection,
  16            OSK_UINT NewState ) {
  17     PCONNECTION_ENDPOINT Connection = WhichConnection;
  18
  19     TI_DbgPrint(DEBUG_TCP,("Connection: %x Flags: %c%c%c%c%c\n",
  20                Connection,
  21                NewState & SEL_CONNECT ? 'C' : 'c',
  22                NewState & SEL_READ    ? 'R' : 'r',
  23                NewState & SEL_FIN     ? 'F' : 'f',
  24                NewState & SEL_ACCEPT  ? 'A' : 'a',
  25                NewState & SEL_WRITE   ? 'W' : 'w'));
  26
  27     if (!Connection)
  28     {
  29         //ASSERT(FALSE);
  30         return 0;
  31     }
  32
  33     TI_DbgPrint(DEBUG_TCP,("Called: NewState %x (Conn %x) (Change %x)\n",
  34                NewState, Connection,
  35                Connection->SignalState ^ NewState,
  36                NewState));
  37
  38     Connection->SignalState = NewState;
  39
  40     HandleSignalledConnection(Connection);
  41
  42     return 0;
  43 }
  44
  45 void TCPPacketSendComplete( PVOID Context,
  46                 PNDIS_PACKET NdisPacket,
  47                 NDIS_STATUS NdisStatus ) {
  48     TI_DbgPrint(DEBUG_TCP,("called %x\n", NdisPacket));
  49     FreeNdisPacket(NdisPacket);
  50     TI_DbgPrint(DEBUG_TCP,("done\n"));
  51 }
  52
  53 #define STRINGIFY(x) #x
  54
  55 int TCPPacketSend(void *ClientData, OSK_PCHAR data, OSK_UINT len ) {
  56     NDIS_STATUS NdisStatus;
  57     PNEIGHBOR_CACHE_ENTRY NCE;
  58     IP_PACKET Packet = { 0 };
  59     IP_ADDRESS RemoteAddress, LocalAddress;
  60     PIPv4_HEADER Header;
  61
  62     if( *data == 0x45 ) { /* IPv4 */
  63     Header = (PIPv4_HEADER)data;
  64     LocalAddress.Type = IP_ADDRESS_V4;
  65     LocalAddress.Address.IPv4Address = Header->SrcAddr;
  66     RemoteAddress.Type = IP_ADDRESS_V4;
  67     RemoteAddress.Address.IPv4Address = Header->DstAddr;
  68     } else {
  69     TI_DbgPrint(MIN_TRACE,("Outgoing packet is not IPv4\n"));
  70     OskitDumpBuffer( data, len );
  71     return OSK_EINVAL;
  72     }
  73
  74     if(!(NCE = RouteGetRouteToDestination( &RemoteAddress ))) {
  75     TI_DbgPrint(MIN_TRACE,("Unable to get route to %s\n", A2S(&RemoteAddress)));
  76     return OSK_EADDRNOTAVAIL;
  77     }
  78
  79     NdisStatus = AllocatePacketWithBuffer( &Packet.NdisPacket, NULL, len );
  80
  81     if (NdisStatus != NDIS_STATUS_SUCCESS) {
  82     TI_DbgPrint(DEBUG_TCP, ("Error from NDIS: %08x\n", NdisStatus));
  83     return OSK_ENOBUFS;
  84     }
  85
  86     GetDataPtr( Packet.NdisPacket, 0,
  87         (PCHAR *)&Packet.Header, &Packet.ContigSize );
  88
  89     RtlCopyMemory( Packet.Header, data, len );
  90
  91     Packet.HeaderSize = sizeof(IPv4_HEADER);
  92     Packet.TotalSize = len;
  93     Packet.SrcAddr = LocalAddress;
  94     Packet.DstAddr = RemoteAddress;
  95
  96     if (!NT_SUCCESS(IPSendDatagram( &Packet, NCE, TCPPacketSendComplete, NULL )))
  97     {
  98         FreeNdisPacket(Packet.NdisPacket);
  99         return OSK_EINVAL;
 100     }
 101
 102     return 0;
 103 }
 104
 105 /* Memory management routines
 106  *
 107  * By far the most requests for memory are either for 128 or 2048 byte blocks,
 108  * so we want to satisfy those from lookaside lists. Unfortunately, the
 109  * TCPFree() function doesn't pass the size of the block to be freed, so we
 110  * need to keep track of it ourselves. We do it by prepending each block with
 111  * 4 bytes, indicating if this is a 'L'arge (2048), 'S'mall (128) or 'O'ther
 112  * block.
 113  */
 114
 115 /* Set to some non-zero value to get a profile of memory allocation sizes */
 116 #define MEM_PROFILE 0
 117
 118 #define SMALL_SIZE 128
 119 #define LARGE_SIZE 2048
 120
 121 #define SIGNATURE_LARGE 'LLLL'
 122 #define SIGNATURE_SMALL 'SSSS'
 123 #define SIGNATURE_OTHER 'OOOO'
 124 static NPAGED_LOOKASIDE_LIST LargeLookasideList;
 125 static NPAGED_LOOKASIDE_LIST SmallLookasideList;
 126
 127 NTSTATUS
 128 TCPMemStartup( void )
 129 {
 130     ExInitializeNPagedLookasideList( &LargeLookasideList,
 131                                      NULL,
 132                                      NULL,
 133                                      0,
 134                                      LARGE_SIZE + sizeof( ULONG ),
 135                                      OSK_LARGE_TAG,
 136                                      0 );
 137     ExInitializeNPagedLookasideList( &SmallLookasideList,
 138                                      NULL,
 139                                      NULL,
 140                                      0,
 141                                      SMALL_SIZE + sizeof( ULONG ),
 142                                      OSK_SMALL_TAG,
 143                                      0 );
 144
 145     return STATUS_SUCCESS;
 146 }
 147
 148 void *TCPMalloc( void *ClientData,
 149          OSK_UINT Bytes, OSK_PCHAR File, OSK_UINT Line ) {
 150     void *v;
 151     ULONG Signature;
 152
 153 #if 0 != MEM_PROFILE
 154     static OSK_UINT *Sizes = NULL, *Counts = NULL, ArrayAllocated = 0;
 155     static OSK_UINT ArrayUsed = 0, AllocationCount = 0;
 156     OSK_UINT i, NewSize, *NewArray;
 157     int Found;
 158
 159     Found = 0;
 160     for ( i = 0; i < ArrayUsed && ! Found; i++ ) {
 161     Found = ( Sizes[i] == Bytes );
 162     if ( Found ) {
 163         Counts[i]++;
 164     }
 165     }
 166     if ( ! Found ) {
 167     if ( ArrayAllocated <= ArrayUsed ) {
 168         NewSize = ( 0 == ArrayAllocated ? 16 : 2 * ArrayAllocated );
 169         NewArray = exAllocatePool( NonPagedPool, 2 * NewSize * sizeof( OSK_UINT ) );
 170         if ( NULL != NewArray ) {
 171         if ( 0 != ArrayAllocated ) {
 172             memcpy( NewArray, Sizes,
 173                     ArrayAllocated * sizeof( OSK_UINT ) );
 174             exFreePool( Sizes );
 175             memcpy( NewArray + NewSize, Counts,
 176                     ArrayAllocated * sizeof( OSK_UINT ) );
 177             exFreePool( Counts );
 178         }
 179         Sizes = NewArray;
 180         Counts = NewArray + NewSize;
 181         ArrayAllocated = NewSize;
 182         } else if ( 0 != ArrayAllocated ) {
 183         exFreePool( Sizes );
 184         exFreePool( Counts );
 185         ArrayAllocated = 0;
 186         }
 187     }
 188     if ( ArrayUsed < ArrayAllocated ) {
 189         Sizes[ArrayUsed] = Bytes;
 190         Counts[ArrayUsed] = 1;
 191         ArrayUsed++;
 192     }
 193     }
 194
 195     if ( 0 == (++AllocationCount % MEM_PROFILE) ) {
 196     TI_DbgPrint(DEBUG_TCP, ("Memory allocation size profile:\n"));
 197     for ( i = 0; i < ArrayUsed; i++ ) {
 198         TI_DbgPrint(DEBUG_TCP,
 199                     ("Size %4u Count %5u\n", Sizes[i], Counts[i]));
 200     }
 201     TI_DbgPrint(DEBUG_TCP, ("End of memory allocation size profile\n"));
 202     }
 203 #endif /* MEM_PROFILE */
 204
 205     if ( SMALL_SIZE == Bytes ) {
 206     v = ExAllocateFromNPagedLookasideList( &SmallLookasideList );
 207     Signature = SIGNATURE_SMALL;
 208     } else if ( LARGE_SIZE == Bytes ) {
 209     v = ExAllocateFromNPagedLookasideList( &LargeLookasideList );
 210     Signature = SIGNATURE_LARGE;
 211     } else {
 212     v = ExAllocatePoolWithTag( NonPagedPool, Bytes + sizeof(ULONG),
 213                                OSK_OTHER_TAG );
 214     Signature = SIGNATURE_OTHER;
 215     }
 216     if( v ) {
 217     *((ULONG *) v) = Signature;
 218     v = (void *)((char *) v + sizeof(ULONG));
 219     }
 220
 221     return v;
 222 }
 223
 224 void TCPFree( void *ClientData,
 225           void *data, OSK_PCHAR File, OSK_UINT Line ) {
 226     ULONG Signature;
 227
 228     data = (void *)((char *) data - sizeof(ULONG));
 229     Signature = *((ULONG *) data);
 230     if ( SIGNATURE_SMALL == Signature ) {
 231     ExFreeToNPagedLookasideList( &SmallLookasideList, data );
 232     } else if ( SIGNATURE_LARGE == Signature ) {
 233     ExFreeToNPagedLookasideList( &LargeLookasideList, data );
 234     } else if ( SIGNATURE_OTHER == Signature ) {
 235     ExFreePoolWithTag( data, OSK_OTHER_TAG );
 236     } else {
 237     ASSERT( FALSE );
 238     }
 239 }
 240
 241 void
 242 TCPMemShutdown( void )
 243 {
 244     ExDeleteNPagedLookasideList( &SmallLookasideList );
 245     ExDeleteNPagedLookasideList( &LargeLookasideList );
 246 }