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     ULONG OldState;
  19     KIRQL OldIrql;
  20
  21     ASSERT_LOCKED(&TCPLock);
  22
  23     TI_DbgPrint(MID_TRACE,("Flags: %c%c%c%c\n",
  24                NewState & SEL_CONNECT ? 'C' : 'c',
  25                NewState & SEL_READ    ? 'R' : 'r',
  26                NewState & SEL_FIN     ? 'F' : 'f',
  27                NewState & SEL_ACCEPT  ? 'A' : 'a'));
  28
  29     TI_DbgPrint(DEBUG_TCP,("Called: NewState %x (Conn %x) (Change %x)\n",
  30                NewState, Connection,
  31                Connection ? Connection->SignalState ^ NewState :
  32                NewState));
  33
  34     if( !Connection ) {
  35     TI_DbgPrint(DEBUG_TCP,("Socket closing.\n"));
  36     Connection = FileFindConnectionByContext( WhichSocket );
  37     if( !Connection )
  38         return 0;
  39     else
  40         TI_DbgPrint(DEBUG_TCP,("Found socket %x\n", Connection));
  41     }
  42
  43     OldState = Connection->SignalState;
  44
  45     Connection->SignalState |= NewState;
  46
  47     NewState = HandleSignalledConnection(Connection);
  48
  49     KeAcquireSpinLock(&SignalledConnectionsLock, &OldIrql);
  50     if ((NewState == 0 || NewState == SEL_FIN) &&
  51         (OldState != 0 && OldState != SEL_FIN))
  52     {
  53         RemoveEntryList(&Connection->SignalList);
  54     }
  55     else if (NewState != 0 && NewState != SEL_FIN)
  56     {
  57         InsertTailList(&SignalledConnectionsList, &Connection->SignalList);
  58     }
  59     KeReleaseSpinLock(&SignalledConnectionsLock, OldIrql);
  60
  61     return 0;
  62 }
  63
  64 void TCPPacketSendComplete( PVOID Context,
  65                 PNDIS_PACKET NdisPacket,
  66                 NDIS_STATUS NdisStatus ) {
  67     TI_DbgPrint(DEBUG_TCP,("called %x\n", NdisPacket));
  68     FreeNdisPacket(NdisPacket);
  69     TI_DbgPrint(DEBUG_TCP,("done\n"));
  70 }
  71
  72 #define STRINGIFY(x) #x
  73
  74 int TCPPacketSend(void *ClientData, OSK_PCHAR data, OSK_UINT len ) {
  75     NDIS_STATUS NdisStatus;
  76     PNEIGHBOR_CACHE_ENTRY NCE;
  77     IP_PACKET Packet = { 0 };
  78     IP_ADDRESS RemoteAddress, LocalAddress;
  79     PIPv4_HEADER Header;
  80
  81     ASSERT_LOCKED(&TCPLock);
  82
  83     if( *data == 0x45 ) { /* IPv4 */
  84     Header = (PIPv4_HEADER)data;
  85     LocalAddress.Type = IP_ADDRESS_V4;
  86     LocalAddress.Address.IPv4Address = Header->SrcAddr;
  87     RemoteAddress.Type = IP_ADDRESS_V4;
  88     RemoteAddress.Address.IPv4Address = Header->DstAddr;
  89     } else {
  90     TI_DbgPrint(MIN_TRACE,("Outgoing packet is not IPv4\n"));
  91     OskitDumpBuffer( data, len );
  92     return OSK_EINVAL;
  93     }
  94
  95     if(!(NCE = RouteGetRouteToDestination( &RemoteAddress ))) {
  96     TI_DbgPrint(MIN_TRACE,("No route to %s\n", A2S(&RemoteAddress)));
  97     return OSK_EADDRNOTAVAIL;
  98     }
  99
 100     NdisStatus = AllocatePacketWithBuffer( &Packet.NdisPacket, NULL, len );
 101
 102     if (NdisStatus != NDIS_STATUS_SUCCESS) {
 103     TI_DbgPrint(DEBUG_TCP, ("Error from NDIS: %08x\n", NdisStatus));
 104     return OSK_ENOBUFS;
 105     }
 106
 107     GetDataPtr( Packet.NdisPacket, 0,
 108         (PCHAR *)&Packet.Header, &Packet.ContigSize );
 109
 110     RtlCopyMemory( Packet.Header, data, len );
 111
 112     Packet.HeaderSize = sizeof(IPv4_HEADER);
 113     Packet.TotalSize = len;
 114     Packet.SrcAddr = LocalAddress;
 115     Packet.DstAddr = RemoteAddress;
 116
 117     if (!NT_SUCCESS(IPSendDatagram( &Packet, NCE, TCPPacketSendComplete, NULL )))
 118     {
 119         FreeNdisPacket(Packet.NdisPacket);
 120         return OSK_EINVAL;
 121     }
 122
 123     return 0;
 124 }
 125
 126 /* Memory management routines
 127  *
 128  * By far the most requests for memory are either for 128 or 2048 byte blocks,
 129  * so we want to satisfy those from lookaside lists. Unfortunately, the
 130  * TCPFree() function doesn't pass the size of the block to be freed, so we
 131  * need to keep track of it ourselves. We do it by prepending each block with
 132  * 4 bytes, indicating if this is a 'L'arge (2048), 'S'mall (128) or 'O'ther
 133  * block.
 134  */
 135
 136 /* Set to some non-zero value to get a profile of memory allocation sizes */
 137 #define MEM_PROFILE 0
 138
 139 #define SMALL_SIZE 128
 140 #define LARGE_SIZE 2048
 141
 142 #define SIGNATURE_LARGE 'LLLL'
 143 #define SIGNATURE_SMALL 'SSSS'
 144 #define SIGNATURE_OTHER 'OOOO'
 145 #define TCP_TAG ' PCT'
 146
 147 static NPAGED_LOOKASIDE_LIST LargeLookasideList;
 148 static NPAGED_LOOKASIDE_LIST SmallLookasideList;
 149
 150 NTSTATUS
 151 TCPMemStartup( void )
 152 {
 153     ExInitializeNPagedLookasideList( &LargeLookasideList,
 154                                      NULL,
 155                                      NULL,
 156                                      0,
 157                                      LARGE_SIZE + sizeof( ULONG ),
 158                                      TCP_TAG,
 159                                      0 );
 160     ExInitializeNPagedLookasideList( &SmallLookasideList,
 161                                      NULL,
 162                                      NULL,
 163                                      0,
 164                                      SMALL_SIZE + sizeof( ULONG ),
 165                                      TCP_TAG,
 166                                      0 );
 167
 168     return STATUS_SUCCESS;
 169 }
 170
 171 void *TCPMalloc( void *ClientData,
 172          OSK_UINT Bytes, OSK_PCHAR File, OSK_UINT Line ) {
 173     void *v;
 174     ULONG Signature;
 175
 176     ASSERT_LOCKED(&TCPLock);
 177
 178 #if 0 != MEM_PROFILE
 179     static OSK_UINT *Sizes = NULL, *Counts = NULL, ArrayAllocated = 0;
 180     static OSK_UINT ArrayUsed = 0, AllocationCount = 0;
 181     OSK_UINT i, NewSize, *NewArray;
 182     int Found;
 183
 184     Found = 0;
 185     for ( i = 0; i < ArrayUsed && ! Found; i++ ) {
 186     Found = ( Sizes[i] == Bytes );
 187     if ( Found ) {
 188         Counts[i]++;
 189     }
 190     }
 191     if ( ! Found ) {
 192     if ( ArrayAllocated <= ArrayUsed ) {
 193         NewSize = ( 0 == ArrayAllocated ? 16 : 2 * ArrayAllocated );
 194         NewArray = exAllocatePool( NonPagedPool, 2 * NewSize * sizeof( OSK_UINT ) );
 195         if ( NULL != NewArray ) {
 196         if ( 0 != ArrayAllocated ) {
 197             memcpy( NewArray, Sizes,
 198                     ArrayAllocated * sizeof( OSK_UINT ) );
 199             exFreePool( Sizes );
 200             memcpy( NewArray + NewSize, Counts,
 201                     ArrayAllocated * sizeof( OSK_UINT ) );
 202             exFreePool( Counts );
 203         }
 204         Sizes = NewArray;
 205         Counts = NewArray + NewSize;
 206         ArrayAllocated = NewSize;
 207         } else if ( 0 != ArrayAllocated ) {
 208         exFreePool( Sizes );
 209         exFreePool( Counts );
 210         ArrayAllocated = 0;
 211         }
 212     }
 213     if ( ArrayUsed < ArrayAllocated ) {
 214         Sizes[ArrayUsed] = Bytes;
 215         Counts[ArrayUsed] = 1;
 216         ArrayUsed++;
 217     }
 218     }
 219
 220     if ( 0 == (++AllocationCount % MEM_PROFILE) ) {
 221     TI_DbgPrint(DEBUG_TCP, ("Memory allocation size profile:\n"));
 222     for ( i = 0; i < ArrayUsed; i++ ) {
 223         TI_DbgPrint(DEBUG_TCP,
 224                     ("Size %4u Count %5u\n", Sizes[i], Counts[i]));
 225     }
 226     TI_DbgPrint(DEBUG_TCP, ("End of memory allocation size profile\n"));
 227     }
 228 #endif /* MEM_PROFILE */
 229
 230     if ( SMALL_SIZE == Bytes ) {
 231     v = ExAllocateFromNPagedLookasideList( &SmallLookasideList );
 232     Signature = SIGNATURE_SMALL;
 233     } else if ( LARGE_SIZE == Bytes ) {
 234     v = ExAllocateFromNPagedLookasideList( &LargeLookasideList );
 235     Signature = SIGNATURE_LARGE;
 236     } else {
 237     v = ExAllocatePool( NonPagedPool, Bytes + sizeof(ULONG) );
 238     Signature = SIGNATURE_OTHER;
 239     }
 240     if( v ) {
 241     *((ULONG *) v) = Signature;
 242     v = (void *)((char *) v + sizeof(ULONG));
 243     TrackWithTag( FOURCC('f','b','s','d'), v, (PCHAR)File, Line );
 244     }
 245
 246     return v;
 247 }
 248
 249 void TCPFree( void *ClientData,
 250           void *data, OSK_PCHAR File, OSK_UINT Line ) {
 251     ULONG Signature;
 252
 253     ASSERT_LOCKED(&TCPLock);
 254
 255     UntrackFL( (PCHAR)File, Line, data, FOURCC('f','b','s','d') );
 256     data = (void *)((char *) data - sizeof(ULONG));
 257     Signature = *((ULONG *) data);
 258     if ( SIGNATURE_SMALL == Signature ) {
 259     ExFreeToNPagedLookasideList( &SmallLookasideList, data );
 260     } else if ( SIGNATURE_LARGE == Signature ) {
 261     ExFreeToNPagedLookasideList( &LargeLookasideList, data );
 262     } else if ( SIGNATURE_OTHER == Signature ) {
 263     ExFreePool( data );
 264     } else {
 265     ASSERT( FALSE );
 266     }
 267 }
 268
 269 void
 270 TCPMemShutdown( void )
 271 {
 272     ExDeleteNPagedLookasideList( &SmallLookasideList );
 273     ExDeleteNPagedLookasideList( &LargeLookasideList );
 274 }