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
8 * CSH 01/08-2000 Created
13 int TCPSocketState(void *ClientData
,
15 void *WhichConnection
,
17 PCONNECTION_ENDPOINT Connection
= WhichConnection
;
19 TI_DbgPrint(DEBUG_TCP
,("Connection: %x Flags: %c%c%c%c%c\n",
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'));
32 if (ClientInfo
.Unlocked
)
33 KeAcquireSpinLockAtDpcLevel(&Connection
->Lock
);
35 TI_DbgPrint(DEBUG_TCP
,("Called: NewState %x (Conn %x) (Change %x)\n",
37 Connection
->SignalState
^ NewState
,
40 Connection
->SignalState
|= NewState
;
42 HandleSignalledConnection(Connection
);
44 if (ClientInfo
.Unlocked
)
45 KeReleaseSpinLockFromDpcLevel(&Connection
->Lock
);
50 void TCPPacketSendComplete( PVOID Context
,
51 PNDIS_PACKET NdisPacket
,
52 NDIS_STATUS NdisStatus
) {
53 TI_DbgPrint(DEBUG_TCP
,("called %x\n", NdisPacket
));
54 FreeNdisPacket(NdisPacket
);
55 TI_DbgPrint(DEBUG_TCP
,("done\n"));
58 #define STRINGIFY(x) #x
60 int TCPPacketSend(void *ClientData
, OSK_PCHAR data
, OSK_UINT len
) {
61 NDIS_STATUS NdisStatus
;
62 PNEIGHBOR_CACHE_ENTRY NCE
;
63 IP_PACKET Packet
= { 0 };
64 IP_ADDRESS RemoteAddress
, LocalAddress
;
67 if( *data
== 0x45 ) { /* IPv4 */
68 Header
= (PIPv4_HEADER
)data
;
69 LocalAddress
.Type
= IP_ADDRESS_V4
;
70 LocalAddress
.Address
.IPv4Address
= Header
->SrcAddr
;
71 RemoteAddress
.Type
= IP_ADDRESS_V4
;
72 RemoteAddress
.Address
.IPv4Address
= Header
->DstAddr
;
74 TI_DbgPrint(MIN_TRACE
,("Outgoing packet is not IPv4\n"));
75 OskitDumpBuffer( data
, len
);
79 if(!(NCE
= RouteGetRouteToDestination( &RemoteAddress
))) {
80 TI_DbgPrint(MIN_TRACE
,("No route to %s\n", A2S(&RemoteAddress
)));
81 return OSK_EADDRNOTAVAIL
;
84 NdisStatus
= AllocatePacketWithBuffer( &Packet
.NdisPacket
, NULL
, len
);
86 if (NdisStatus
!= NDIS_STATUS_SUCCESS
) {
87 TI_DbgPrint(DEBUG_TCP
, ("Error from NDIS: %08x\n", NdisStatus
));
91 GetDataPtr( Packet
.NdisPacket
, 0,
92 (PCHAR
*)&Packet
.Header
, &Packet
.ContigSize
);
94 RtlCopyMemory( Packet
.Header
, data
, len
);
96 Packet
.HeaderSize
= sizeof(IPv4_HEADER
);
97 Packet
.TotalSize
= len
;
98 Packet
.SrcAddr
= LocalAddress
;
99 Packet
.DstAddr
= RemoteAddress
;
101 if (!NT_SUCCESS(IPSendDatagram( &Packet
, NCE
, TCPPacketSendComplete
, NULL
)))
103 FreeNdisPacket(Packet
.NdisPacket
);
110 /* Memory management routines
112 * By far the most requests for memory are either for 128 or 2048 byte blocks,
113 * so we want to satisfy those from lookaside lists. Unfortunately, the
114 * TCPFree() function doesn't pass the size of the block to be freed, so we
115 * need to keep track of it ourselves. We do it by prepending each block with
116 * 4 bytes, indicating if this is a 'L'arge (2048), 'S'mall (128) or 'O'ther
120 /* Set to some non-zero value to get a profile of memory allocation sizes */
121 #define MEM_PROFILE 0
123 #define SMALL_SIZE 128
124 #define LARGE_SIZE 2048
126 #define SIGNATURE_LARGE 'LLLL'
127 #define SIGNATURE_SMALL 'SSSS'
128 #define SIGNATURE_OTHER 'OOOO'
129 static NPAGED_LOOKASIDE_LIST LargeLookasideList
;
130 static NPAGED_LOOKASIDE_LIST SmallLookasideList
;
133 TCPMemStartup( void )
135 ExInitializeNPagedLookasideList( &LargeLookasideList
,
139 LARGE_SIZE
+ sizeof( ULONG
),
142 ExInitializeNPagedLookasideList( &SmallLookasideList
,
146 SMALL_SIZE
+ sizeof( ULONG
),
150 return STATUS_SUCCESS
;
153 void *TCPMalloc( void *ClientData
,
154 OSK_UINT Bytes
, OSK_PCHAR File
, OSK_UINT Line
) {
159 static OSK_UINT
*Sizes
= NULL
, *Counts
= NULL
, ArrayAllocated
= 0;
160 static OSK_UINT ArrayUsed
= 0, AllocationCount
= 0;
161 OSK_UINT i
, NewSize
, *NewArray
;
165 for ( i
= 0; i
< ArrayUsed
&& ! Found
; i
++ ) {
166 Found
= ( Sizes
[i
] == Bytes
);
172 if ( ArrayAllocated
<= ArrayUsed
) {
173 NewSize
= ( 0 == ArrayAllocated
? 16 : 2 * ArrayAllocated
);
174 NewArray
= exAllocatePool( NonPagedPool
, 2 * NewSize
* sizeof( OSK_UINT
) );
175 if ( NULL
!= NewArray
) {
176 if ( 0 != ArrayAllocated
) {
177 memcpy( NewArray
, Sizes
,
178 ArrayAllocated
* sizeof( OSK_UINT
) );
180 memcpy( NewArray
+ NewSize
, Counts
,
181 ArrayAllocated
* sizeof( OSK_UINT
) );
182 exFreePool( Counts
);
185 Counts
= NewArray
+ NewSize
;
186 ArrayAllocated
= NewSize
;
187 } else if ( 0 != ArrayAllocated
) {
189 exFreePool( Counts
);
193 if ( ArrayUsed
< ArrayAllocated
) {
194 Sizes
[ArrayUsed
] = Bytes
;
195 Counts
[ArrayUsed
] = 1;
200 if ( 0 == (++AllocationCount
% MEM_PROFILE
) ) {
201 TI_DbgPrint(DEBUG_TCP
, ("Memory allocation size profile:\n"));
202 for ( i
= 0; i
< ArrayUsed
; i
++ ) {
203 TI_DbgPrint(DEBUG_TCP
,
204 ("Size %4u Count %5u\n", Sizes
[i
], Counts
[i
]));
206 TI_DbgPrint(DEBUG_TCP
, ("End of memory allocation size profile\n"));
208 #endif /* MEM_PROFILE */
210 if ( SMALL_SIZE
== Bytes
) {
211 v
= ExAllocateFromNPagedLookasideList( &SmallLookasideList
);
212 Signature
= SIGNATURE_SMALL
;
213 } else if ( LARGE_SIZE
== Bytes
) {
214 v
= ExAllocateFromNPagedLookasideList( &LargeLookasideList
);
215 Signature
= SIGNATURE_LARGE
;
217 v
= ExAllocatePoolWithTag( NonPagedPool
, Bytes
+ sizeof(ULONG
),
219 Signature
= SIGNATURE_OTHER
;
222 *((ULONG
*) v
) = Signature
;
223 v
= (void *)((char *) v
+ sizeof(ULONG
));
229 void TCPFree( void *ClientData
,
230 void *data
, OSK_PCHAR File
, OSK_UINT Line
) {
233 data
= (void *)((char *) data
- sizeof(ULONG
));
234 Signature
= *((ULONG
*) data
);
235 if ( SIGNATURE_SMALL
== Signature
) {
236 ExFreeToNPagedLookasideList( &SmallLookasideList
, data
);
237 } else if ( SIGNATURE_LARGE
== Signature
) {
238 ExFreeToNPagedLookasideList( &LargeLookasideList
, data
);
239 } else if ( SIGNATURE_OTHER
== Signature
) {
240 ExFreePoolWithTag( data
, OSK_OTHER_TAG
);
247 TCPMemShutdown( void )
249 ExDeleteNPagedLookasideList( &SmallLookasideList
);
250 ExDeleteNPagedLookasideList( &LargeLookasideList
);