You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
332 lines
7.4 KiB
332 lines
7.4 KiB
/*++
|
|
|
|
Copyright (c) 1991 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
llclib.c
|
|
|
|
Abstract:
|
|
|
|
This module includes some general purpose library routines
|
|
|
|
Contents:
|
|
SwapMemCpy
|
|
RemoveFromLinkList
|
|
LlcSleep
|
|
LlcInitUnicodeString
|
|
LlcFreeUnicodeString
|
|
|
|
Author:
|
|
|
|
Antti Saarenheimo (o-anttis) 20-MAY-1991
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include <llc.h>
|
|
#include <memory.h>
|
|
|
|
//
|
|
// This table is used to swap the bits within each byte.
|
|
// The bits are in a reverse order in the token-ring frame header.
|
|
// We must swap the bits in a ethernet frame header, when the header
|
|
// is copied to a user buffer.
|
|
//
|
|
|
|
UCHAR Swap[256] = {
|
|
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
|
|
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
|
|
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
|
|
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
|
|
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
|
|
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
|
|
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
|
|
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
|
|
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
|
|
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
|
|
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
|
|
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
|
|
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
|
|
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
|
|
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
|
|
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
|
|
};
|
|
|
|
|
|
VOID
|
|
SwapMemCpy(
|
|
IN BOOLEAN boolSwapBytes,
|
|
IN PUCHAR pDest,
|
|
IN PUCHAR pSrc,
|
|
IN UINT Len
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
conditionally swaps the bits within the copied bytes.
|
|
|
|
Arguments:
|
|
|
|
boolSwapBytes - TRUE if bytes are to be bit-swapped
|
|
pDest - where to copy to
|
|
pSrc - where to copy from
|
|
Len - number of bytes to copy
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
if (boolSwapBytes) {
|
|
SwappingMemCpy(pDest, pSrc, Len);
|
|
} else {
|
|
LlcMemCpy(pDest, pSrc, Len);
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
RemoveFromLinkList(
|
|
IN OUT PVOID* ppBase,
|
|
IN PVOID pElement
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Searches and removes the given element from a single-entry link list.
|
|
|
|
ASSUMES: the link points to the link field in the next object
|
|
|
|
Arguments:
|
|
|
|
ppBase - pointer to pointer to queue
|
|
pElement - pointer to element to remove from queue
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
for (; (PQUEUE_PACKET)*ppBase; ppBase = (PVOID*)&(((PQUEUE_PACKET)*ppBase)->pNext)) {
|
|
if (*ppBase == pElement) {
|
|
*ppBase = ((PQUEUE_PACKET)pElement)->pNext;
|
|
|
|
#if LLC_DBG
|
|
((PQUEUE_PACKET)pElement)->pNext = NULL;
|
|
#endif
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
LlcSleep(
|
|
IN LONG lMicroSeconds
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Suspends thread execution for a short time
|
|
|
|
Arguments:
|
|
|
|
lMicroSeconds - number of microseconds to wait
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
TIME t;
|
|
|
|
t.LowTime = -(lMicroSeconds * 10);
|
|
t.HighTime = -1;
|
|
KeDelayExecutionThread(UserMode, FALSE, &t);
|
|
}
|
|
|
|
|
|
DLC_STATUS
|
|
LlcInitUnicodeString(
|
|
OUT PUNICODE_STRING pStringDest,
|
|
IN PUNICODE_STRING pStringSrc
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
initialize a UNICODE_STRING
|
|
|
|
Arguments:
|
|
|
|
pStringDest - pointer to UNICODE_STRING structure to initialize
|
|
pStringSrc - pointer to UNICODE_STRING structure containing valid string
|
|
|
|
Return Value:
|
|
|
|
DLC_STATUS
|
|
Success - STATUS_SUCCESS
|
|
Failure - DLC_STATUS_NO_MEMORY
|
|
Couldn't allocate memory from non-paged pool
|
|
|
|
--*/
|
|
|
|
{
|
|
pStringDest->MaximumLength = (USHORT)(pStringSrc->Length + sizeof(WCHAR));
|
|
pStringDest->Buffer = ALLOCATE_STRING_DRIVER(pStringDest->MaximumLength);
|
|
if (pStringDest->Buffer == NULL) {
|
|
return DLC_STATUS_NO_MEMORY;
|
|
} else {
|
|
RtlCopyUnicodeString(pStringDest, pStringSrc);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
LlcFreeUnicodeString(
|
|
IN PUNICODE_STRING UnicodeString
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Companion routine to LlcInitUnicodeString - frees memory allocated from
|
|
non-paged pool for a UNICODE string
|
|
|
|
Arguments:
|
|
|
|
UnicodeString - pointer to UNICODE_STRING structure, the buffer for which
|
|
was allocated in LlcInitUnicodeString
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
FREE_STRING_DRIVER(UnicodeString->Buffer);
|
|
}
|
|
|
|
//#if LLC_DBG
|
|
//
|
|
//VOID
|
|
//LlcInvalidObjectType( VOID )
|
|
//{
|
|
// DbgPrint( "DLC: Invalid object type!\n");
|
|
// DbgBreakPoint();
|
|
//}
|
|
//
|
|
//
|
|
//VOID LlcBreakListCorrupt( VOID )
|
|
//{
|
|
// DbgPrint( "Link list is corrupt! ");
|
|
// DbgBreakPoint();
|
|
//}
|
|
//
|
|
//static PUCHAR aLanLlcInputStrings[] = {
|
|
// "DISC0",
|
|
// "DISC1",
|
|
// "DM0",
|
|
// "DM1",
|
|
// "FRMR0",
|
|
// "FRMR1",
|
|
// "SABME0",
|
|
// "SABME1",
|
|
// "UA0",
|
|
// "UA1",
|
|
// "IS_I_r0",
|
|
// "IS_I_r1",
|
|
// "IS_I_c0",
|
|
// "IS_I_c1",
|
|
// "OS_I_r0",
|
|
// "OS_I_r1",
|
|
// "OS_I_c0",
|
|
// "OS_I_c1",
|
|
// "REJ_r0",
|
|
// "REJ_r1",
|
|
// "REJ_c0",
|
|
// "REJ_c1",
|
|
// "RNR_r0",
|
|
// "RNR_r1",
|
|
// "RNR_c0",
|
|
// "RNR_c1",
|
|
// "RR_r0",
|
|
// "RR_r1",
|
|
// "RR_c0",
|
|
// "RR_c1",
|
|
// "LPDU_INVALID_r0",
|
|
// "LPDU_INVALID_r1",
|
|
// "LPDU_INVALID_c0",
|
|
// "LPDU_INVALID_c1",
|
|
// "ACTIVATE_LS",
|
|
// "DEACTIVATE_LS",
|
|
// "ENTER_LCL_Busy",
|
|
// "EXIT_LCL_Busy",
|
|
// "SEND_I_POLL",
|
|
// "SET_ABME",
|
|
// "SET_ADM",
|
|
// "Ti_Expired",
|
|
// "T1_Expired",
|
|
// "T2_Expired"
|
|
//};
|
|
//
|
|
////
|
|
//// Procedure prints the last global inputs and time stamps. This
|
|
//// does not print the stamps of a specific link station!!!
|
|
////
|
|
//VOID
|
|
//PrintLastInputs(
|
|
// IN PUCHAR pszMessage,
|
|
// IN PDATA_LINK pLink
|
|
// )
|
|
//{
|
|
// UINT i;
|
|
// UINT j = 0;
|
|
//
|
|
// DbgPrint( pszMessage );
|
|
//
|
|
// //
|
|
// // Print 20 last time stamps and state inputs of the given
|
|
// // link station.
|
|
// //
|
|
// for (i = InputIndex - 1; i > InputIndex - LLC_INPUT_TABLE_SIZE; i--)
|
|
// {
|
|
// if (aLast[ i % LLC_INPUT_TABLE_SIZE ].pLink == pLink)
|
|
// {
|
|
// DbgPrint(
|
|
// "%4x:%10s, ",
|
|
// aLast[i % LLC_INPUT_TABLE_SIZE].Time,
|
|
// aLanLlcInputStrings[ aLast[i % LLC_INPUT_TABLE_SIZE].Input]
|
|
// );
|
|
// j++;
|
|
// if ((j % 4) == 0)
|
|
// {
|
|
// DbgPrint( "\n" );
|
|
// }
|
|
// if (j == 20)
|
|
// {
|
|
// break;
|
|
// }
|
|
// }
|
|
// }
|
|
//}
|
|
//#endif
|