/* * This file contains debug support procedures, common for NDIS5 and NDIS6 * * Copyright (c) 2008-2017 Red Hat, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met : * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and / or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of their contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "ndis56common.h" #include "stdarg.h" #include "ntstrsafe.h" //#define OVERRIDE_DEBUG_BREAK #ifdef WPP_EVENT_TRACING #include "ParaNdis-Debug.tmh" #endif int virtioDebugLevel = 1; int nDebugLevel = 1; int bDebugPrint = 1; static NDIS_SPIN_LOCK CrashLock; static KBUGCHECK_REASON_CALLBACK_ROUTINE ParaNdis_OnBugCheck; static VOID NTAPI ParaNdis_OnBugCheck( IN KBUGCHECK_CALLBACK_REASON Reason, IN PKBUGCHECK_REASON_CALLBACK_RECORD Record, IN OUT PVOID ReasonSpecificData, IN ULONG ReasonSpecificDataLength ); static VOID ParaNdis_PrepareBugCheckData(); typedef BOOLEAN (NTAPI *KeRegisterBugCheckReasonCallbackType) ( __out PKBUGCHECK_REASON_CALLBACK_RECORD CallbackRecord, __in PKBUGCHECK_REASON_CALLBACK_ROUTINE CallbackRoutine, __in KBUGCHECK_CALLBACK_REASON Reason, __in PUCHAR Component ); typedef BOOLEAN (NTAPI *KeDeregisterBugCheckReasonCallbackType) ( __inout PKBUGCHECK_REASON_CALLBACK_RECORD CallbackRecord ); typedef ULONG (NTAPI *vDbgPrintExType)( __in ULONG ComponentId, __in ULONG Level, __in PCCH Format, __in va_list arglist ); static ULONG NTAPI DummyPrintProcedure( __in ULONG ComponentId, __in ULONG Level, __in PCCH Format, __in va_list arglist ) { return 0; } static BOOLEAN NTAPI KeRegisterBugCheckReasonCallbackDummyProc( __out PKBUGCHECK_REASON_CALLBACK_RECORD CallbackRecord, __in PKBUGCHECK_REASON_CALLBACK_ROUTINE CallbackRoutine, __in KBUGCHECK_CALLBACK_REASON Reason, __in PUCHAR Component ) { CallbackRecord->State = 0; return FALSE; } BOOLEAN NTAPI KeDeregisterBugCheckReasonCallbackDummyProc( __inout PKBUGCHECK_REASON_CALLBACK_RECORD CallbackRecord ) { return FALSE; } static vDbgPrintExType PrintProcedure = DummyPrintProcedure; static KeRegisterBugCheckReasonCallbackType BugCheckRegisterCallback = KeRegisterBugCheckReasonCallbackDummyProc; static KeDeregisterBugCheckReasonCallbackType BugCheckDeregisterCallback = KeDeregisterBugCheckReasonCallbackDummyProc; KBUGCHECK_REASON_CALLBACK_RECORD CallbackRecord; #if !defined(WPP_EVENT_TRACING) || defined(WPP_USE_BYPASS) #if defined(DPFLTR_MASK) //common case, except Win2K static void __cdecl DebugPrint(const char *fmt, ...) { va_list list; va_start(list, fmt); PrintProcedure(DPFLTR_DEFAULT_ID, 9 | DPFLTR_MASK, fmt, list); #if defined(VIRTIO_DBG_USE_IOPORT) { NTSTATUS status; // use this way of output only for DISPATCH_LEVEL, // higher requires more protection if (KeGetCurrentIrql() <= DISPATCH_LEVEL) { char buf[256]; size_t len, i; buf[0] = 0; status = RtlStringCbVPrintfA(buf, sizeof(buf), fmt, list); if (status == STATUS_SUCCESS) len = strlen(buf); else if (status == STATUS_BUFFER_OVERFLOW) len = sizeof(buf); else { memcpy(buf, "Can't print", 11); len = 11; } NdisAcquireSpinLock(&CrashLock); for (i = 0; i < len; ++i) { NdisRawWritePortUchar(VIRTIO_DBG_USE_IOPORT, buf[i]); } NdisRawWritePortUchar(VIRTIO_DBG_USE_IOPORT, '\n'); NdisReleaseSpinLock(&CrashLock); } } #endif } DEBUGPRINTFUNC pDebugPrint = DebugPrint; DEBUGPRINTFUNC VirtioDebugPrintProc = DebugPrint; #else //DPFLTR_MASK #pragma message("DebugPrint for Win2K") DEBUGPRINTFUNC pDebugPrint = DbgPrint; DEBUGPRINTFUNC VirtioDebugPrintProc = DbgPrint; #endif //DPFLTR_MASK #endif //!defined(WPP_EVENT_TRACING) || defined(WPP_USE_BYPASS) void _LogOutEntry(int level, const char *s) { DPrintf(level, ("[%s]=>", s)); } void _LogOutExitValue(int level, const char *s, ULONG value) { DPrintf(level, ("[%s]<=0x%X", s, value)); } void _LogOutString(int level, const char *s) { DPrintf(level, ("[%s]", s)); } VOID WppEnableCallback( __in LPCGUID Guid, __in __int64 Logger, __in BOOLEAN Enable, __in ULONG Flags, __in UCHAR Level) { #if WPP_USE_BYPASS DPrintfBypass(0, ("[%s] %s, flags %X, level %d", __FUNCTION__, Enable ? "enabled" : "disabled", Flags, (ULONG)Level)); #endif nDebugLevel = Level; bDebugPrint = Enable; } #ifdef OVERRIDE_DEBUG_BREAK static PUCHAR pDbgBreakPoint; static UCHAR DbgBreakPointChunk[5]; static void AnotherDbgBreak() { DPrintf(0, ("Somebody tried to break into the debugger!")); } #endif void ParaNdis_DebugInitialize(PVOID DriverObject,PVOID RegistryPath) { NDIS_STRING usRegister, usDeregister, usPrint; PVOID pr, pd; BOOLEAN res; WPP_INIT_TRACING(DriverObject, RegistryPath); NdisAllocateSpinLock(&CrashLock); KeInitializeCallbackRecord(&CallbackRecord); ParaNdis_PrepareBugCheckData(); NdisInitUnicodeString(&usPrint, L"vDbgPrintEx"); NdisInitUnicodeString(&usRegister, L"KeRegisterBugCheckReasonCallback"); NdisInitUnicodeString(&usDeregister, L"KeDeregisterBugCheckReasonCallback"); pd = MmGetSystemRoutineAddress(&usPrint); if (pd) PrintProcedure = (vDbgPrintExType)pd; pr = MmGetSystemRoutineAddress(&usRegister); pd = MmGetSystemRoutineAddress(&usDeregister); if (pr && pd) { BugCheckRegisterCallback = (KeRegisterBugCheckReasonCallbackType)pr; BugCheckDeregisterCallback = (KeDeregisterBugCheckReasonCallbackType)pd; } res = BugCheckRegisterCallback(&CallbackRecord, ParaNdis_OnBugCheck, KbCallbackSecondaryDumpData, "NetKvm"); DPrintf(0, ("[%s] Crash callback %sregistered", __FUNCTION__, res ? "" : "NOT ")); #ifdef OVERRIDE_DEBUG_BREAK if (sizeof(PVOID) == sizeof(ULONG)) { UCHAR replace[5] = {0xe9,0,0,0,0}; ULONG replacement; NDIS_STRING usDbgBreakPointName; NdisInitUnicodeString(&usDbgBreakPointName, L"DbgBreakPoint"); pDbgBreakPoint = (PUCHAR)MmGetSystemRoutineAddress(&usDbgBreakPointName); if (pDbgBreakPoint) { DPrintf(0, ("Replacing original BP handler at %p", pDbgBreakPoint)); replacement = RtlPointerToOffset(pDbgBreakPoint + 5, AnotherDbgBreak); RtlCopyMemory(replace + 1, &replacement, sizeof(replacement)); RtlCopyMemory(DbgBreakPointChunk, pDbgBreakPoint, sizeof(DbgBreakPointChunk)); RtlCopyMemory(pDbgBreakPoint, replace, sizeof(replace)); } } #endif } void ParaNdis_DebugCleanup(PDRIVER_OBJECT pDriverObject) { #ifdef OVERRIDE_DEBUG_BREAK if (sizeof(PVOID) == sizeof(ULONG) && pDbgBreakPoint) { DPrintf(0, ("Restoring original BP handler at %p", pDbgBreakPoint)); RtlCopyMemory(pDbgBreakPoint, DbgBreakPointChunk, sizeof(DbgBreakPointChunk)); } #endif BugCheckDeregisterCallback(&CallbackRecord); WPP_CLEANUP(pDriverObject); } #define MAX_CONTEXTS 4 #if defined(ENABLE_HISTORY_LOG) #define MAX_HISTORY 0x40000 #else #define MAX_HISTORY 2 #endif typedef struct _tagBugCheckStaticData { tBugCheckStaticDataHeader Header; tBugCheckPerNicDataContent PerNicData[MAX_CONTEXTS]; tBugCheckStaticDataContent Data; tBugCheckHistoryDataEntry History[MAX_HISTORY]; }tBugCheckStaticData; typedef struct _tagBugCheckData { tBugCheckStaticData StaticData; tBugCheckDataLocation Location; }tBugCheckData; static tBugCheckData BugCheckData; static BOOLEAN bNative = TRUE; VOID ParaNdis_PrepareBugCheckData() { BugCheckData.StaticData.Header.StaticDataVersion = PARANDIS_DEBUG_STATIC_DATA_VERSION; BugCheckData.StaticData.Header.PerNicDataVersion = PARANDIS_DEBUG_PER_NIC_DATA_VERSION; BugCheckData.StaticData.Header.ulMaxContexts = MAX_CONTEXTS; BugCheckData.StaticData.Header.SizeOfPointer = sizeof(PVOID); BugCheckData.StaticData.Header.PerNicData = (UINT_PTR)(PVOID)BugCheckData.StaticData.PerNicData; BugCheckData.StaticData.Header.DataArea = (UINT64)&BugCheckData.StaticData.Data; BugCheckData.StaticData.Header.DataAreaSize = sizeof(BugCheckData.StaticData.Data); BugCheckData.StaticData.Data.HistoryDataVersion = PARANDIS_DEBUG_HISTORY_DATA_VERSION; BugCheckData.StaticData.Data.SizeOfHistory = MAX_HISTORY; BugCheckData.StaticData.Data.SizeOfHistoryEntry = sizeof(tBugCheckHistoryDataEntry); BugCheckData.StaticData.Data.HistoryData = (UINT_PTR)(PVOID)BugCheckData.StaticData.History; BugCheckData.Location.Address = (UINT64)&BugCheckData; BugCheckData.Location.Size = sizeof(BugCheckData); } void ParaNdis_DebugRegisterMiniport(PARANDIS_ADAPTER *pContext, BOOLEAN bRegister) { UINT i; NdisAcquireSpinLock(&CrashLock); for (i = 0; i < MAX_CONTEXTS; ++i) { UINT64 val1 = bRegister ? 0 : (UINT_PTR)pContext; UINT64 val2 = bRegister ? (UINT_PTR)pContext : 0; if (BugCheckData.StaticData.PerNicData[i].Context != val1) continue; BugCheckData.StaticData.PerNicData[i].Context = val2; break; } NdisReleaseSpinLock(&CrashLock); } static UINT FillDataOnBugCheck() { UINT i, n = 0; NdisGetCurrentSystemTime(&BugCheckData.StaticData.Header.qCrashTime); for (i = 0; i < MAX_CONTEXTS; ++i) { tBugCheckPerNicDataContent *pSave = &BugCheckData.StaticData.PerNicData[i]; PARANDIS_ADAPTER *p = (PARANDIS_ADAPTER *)pSave->Context; if (!p) continue; pSave->nofPacketsToComplete = p->NetTxPacketsToReturn; pSave->nofReadyTxBuffers = p->nofFreeHardwareBuffers; pSave->LastInterruptTimeStamp.QuadPart = PARANDIS_GET_LAST_INTERRUPT_TIMESTAMP(p); pSave->LastTxCompletionTimeStamp = p->LastTxCompletionTimeStamp; ParaNdis_CallOnBugCheck(p); ++n; } return n; } VOID NTAPI ParaNdis_OnBugCheck( IN KBUGCHECK_CALLBACK_REASON Reason, IN PKBUGCHECK_REASON_CALLBACK_RECORD Record, IN OUT PVOID ReasonSpecificData, IN ULONG ReasonSpecificDataLength ) { KBUGCHECK_SECONDARY_DUMP_DATA *pDump = (KBUGCHECK_SECONDARY_DUMP_DATA *)ReasonSpecificData; if (KbCallbackSecondaryDumpData == Reason && ReasonSpecificDataLength >= sizeof(*pDump)) { ULONG dumpSize = sizeof(BugCheckData.Location); if (!pDump->OutBuffer) { UINT nSaved; nSaved = FillDataOnBugCheck(); if (pDump->InBufferLength >= dumpSize) { pDump->OutBuffer = pDump->InBuffer; pDump->OutBufferLength = dumpSize; } else { pDump->OutBuffer = &BugCheckData.Location; pDump->OutBufferLength = dumpSize; bNative = FALSE; } DPrintf(0, ("[%s] system buffer of %d, saving data for %d NIC", __FUNCTION__,pDump->InBufferLength, nSaved)); DPrintf(0, ("[%s] using %s buffer", __FUNCTION__, bNative ? "native" : "own")); } else if (pDump->OutBuffer == pDump->InBuffer) { RtlCopyMemory(&pDump->Guid, &ParaNdis_CrashGuid, sizeof(pDump->Guid)); RtlCopyMemory(pDump->InBuffer, &BugCheckData.Location, dumpSize); pDump->OutBufferLength = dumpSize; DPrintf(0, ("[%s] written %d to %p", __FUNCTION__, (ULONG)BugCheckData.Location.Size, (UINT_PTR)BugCheckData.Location.Address )); DPrintf(0, ("[%s] dump data (%d) at %p", __FUNCTION__, pDump->OutBufferLength, pDump->OutBuffer)); } } } #if defined(ENABLE_HISTORY_LOG) void ParaNdis_DebugHistory( PARANDIS_ADAPTER *pContext, eHistoryLogOperation op, PVOID pParam1, ULONG lParam2, ULONG lParam3, ULONG lParam4) { tBugCheckHistoryDataEntry *phe; ULONG index = InterlockedIncrement(&BugCheckData.StaticData.Data.CurrentHistoryIndex); index = (index - 1) % MAX_HISTORY; phe = &BugCheckData.StaticData.History[index]; phe->Context = (UINT_PTR)pContext; phe->operation = op; phe->pParam1 = (UINT_PTR)pParam1; phe->lParam2 = lParam2; phe->lParam3 = lParam3; phe->lParam4 = lParam4; #if (PARANDIS_DEBUG_HISTORY_DATA_VERSION == 1) phe->uIRQL = KeGetCurrentIrql(); phe->uProcessor = KeGetCurrentProcessorNumber(); #endif NdisGetCurrentSystemTime(&phe->TimeStamp); } #endif