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653 lines
21 KiB
653 lines
21 KiB
/*
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* File: nlbkd.c
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* Description: This file contains the implementation of the NLB KD
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* debugging extensions. Use '!load nlbkd.dll' to load
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* the extensions and '!nlbkd.help' to see the supported
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* extensions.
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* Author: Created by shouse, 1.4.01
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*/
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#include "nlbkd.h"
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#include "utils.h"
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#include "print.h"
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WINDBG_EXTENSION_APIS ExtensionApis;
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EXT_API_VERSION ApiVersion = { 1, 0, EXT_API_VERSION_NUMBER64, 0 };
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#define NL 1
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#define NONL 0
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USHORT SavedMajorVersion;
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USHORT SavedMinorVersion;
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BOOL ChkTarget;
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/*
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* Function: WinDbgExtensionDllInit
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* Description: Initializes the KD extension DLL.
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* Author: Created by shouse, 1.4.01 - copied largely from ndiskd.dll
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*/
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VOID WinDbgExtensionDllInit (PWINDBG_EXTENSION_APIS64 lpExtensionApis, USHORT MajorVersion, USHORT MinorVersion) {
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ExtensionApis = *lpExtensionApis;
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SavedMajorVersion = MajorVersion;
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SavedMinorVersion = MinorVersion;
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ChkTarget = (SavedMajorVersion == 0x0c) ? TRUE : FALSE;
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}
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/*
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* Function: CheckVersion
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* Description: Checks the extension DLL version against the target version.
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* Author: Created by shouse, 1.4.01 - copied largely from ndiskd.dll
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*/
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VOID CheckVersion (VOID) {
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/* For now, do nothing. */
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return;
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#if DBG
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if ((SavedMajorVersion != 0x0c) || (SavedMinorVersion != VER_PRODUCTBUILD)) {
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dprintf("\r\n*** Extension DLL(%d Checked) does not match target system(%d %s)\r\n\r\n",
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VER_PRODUCTBUILD, SavedMinorVersion, (SavedMajorVersion==0x0f) ? "Free" : "Checked" );
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}
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#else
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if ((SavedMajorVersion != 0x0f) || (SavedMinorVersion != VER_PRODUCTBUILD)) {
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dprintf("\r\n*** Extension DLL(%d Free) does not match target system(%d %s)\r\n\r\n",
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VER_PRODUCTBUILD, SavedMinorVersion, (SavedMajorVersion==0x0f) ? "Free" : "Checked" );
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}
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#endif
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}
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/*
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* Function: ExtensionApiVersion
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* Description: Returns the API version information.
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* Author: Created by shouse, 1.4.01 - copied largely from ndiskd.dll
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*/
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LPEXT_API_VERSION ExtensionApiVersion (VOID) {
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return &ApiVersion;
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}
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/*
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* Function: help
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* Description: Prints the usage of the NLB KD debugger extensions.
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* Author: Created by shouse, 1.4.01
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*/
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DECLARE_API (help) {
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dprintf("Network Load Balancing debugger extensions:\n");
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dprintf(" version print nlbkd version\n");
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dprintf(" nlbadapters [Verbosity] show all NLB adapter blocks\n");
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dprintf(" nlbadapter <Adapter Block> [Verbosity] dump an NLB adapter block\n");
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dprintf(" nlbctxt <Context Block> [Verbosity] dump an NLB context block\n");
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dprintf(" nlbload <Load Block> [Verbosity] dump an NLB load block\n");
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dprintf(" nlbparams <Params Block> [Verbosity] dump an NLB parameters block\n");
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dprintf(" nlbresp <Packet> [Direction] dump the NLB private data for the specified packet\n");
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dprintf(" nlbconnq <Queue> [MaxEntries] dump the contents of a connection descriptor queue\n");
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dprintf(" nlbhash <Packet> determine whether or not NLB will accept this packet\n");
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dprintf(" nlbpkt <Packet> dump an NLB-specific packet whose type is determined\n");
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dprintf(" automagically (heartbeat, IGMP, or remote-control)\n");
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dprintf(" nlbmap <Load Block> <Client IP> <Client Port> <Server IP> <Server Port> [Protocol] [Packet Type]\n");
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dprintf(" query map function and retrieve any existing state for this tuple\n");
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dprintf(" nlbteams dump the linked list of NLB BDA teams\n");
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dprintf("\n");
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dprintf(" [Verbosity] is an optional integer from 0 to 2 that determines the level of detail displayed.\n");
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dprintf(" [Direction] is an optional integer that specifies the direction of the packet (RCV=0, SND=1).\n");
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dprintf(" [Protocol] is an optional protocol specification, which can be TCP or UDP.\n");
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dprintf(" [Packet Type] is an optional TCP packet type specification, which can be SYN, DATA, FIN or RST.\n");
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dprintf("\n");
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dprintf(" IP addresses can be in dotted notation or network byte order DWORDs.\n");
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}
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/*
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* Function: version
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* Description: Prints the NLB KD debugger extension version information.
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* Author: Created by shouse, 1.4.01 - copied largely from ndiskd.dll
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*/
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DECLARE_API (version) {
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#if DBG
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PCSTR kind = "Checked";
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#else
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PCSTR kind = "Free";
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#endif
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dprintf("%s NLB Extension DLL for Build %d debugging %s kernel for Build %d\n", kind,
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VER_PRODUCTBUILD, SavedMajorVersion == 0x0c ? "Checked" : "Free", SavedMinorVersion);
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}
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/*
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* Function: nlbadapters
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* Description: Prints all NLB adapter strucutres in use. Verbosity is always LOW.
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* Author: Created by shouse, 1.5.01
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*/
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DECLARE_API (nlbadapters) {
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ULONG dwVerbosity = VERBOSITY_LOW;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pNumAdapters;
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DWORD dwAdapterSize;
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ULONG dwNumAdapters;
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ULONG64 pAdapter;
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ULONG dwIndex;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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if (args && (*args)) {
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/* Copy the argument list into a temporary buffer. */
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strcpy(szArgBuffer, args);
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/* Peel out all of the tokenized strings. */
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for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
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strcpy(&szArgList[index++][0], p);
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/* If a verbosity was specified, get it. */
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if (index == 1) dwVerbosity = atoi(&szArgList[0][0]);
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/* If too many arguments were given, or the verbosity was out of range, complain. */
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if ((index > 1) || (dwVerbosity > VERBOSITY_HIGH)) {
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PrintUsage(USAGE_ADAPTERS);
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return;
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}
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}
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/* Get the address of the global variable containing the number of NLB adapters in use. */
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pNumAdapters = GetExpression(UNIV_ADAPTERS_COUNT);
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if (!pNumAdapters) {
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ErrorCheckSymbols(UNIV_ADAPTERS_COUNT);
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return;
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}
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/* Get the number of adapters from the address. */
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dwNumAdapters = GetUlongFromAddress(pNumAdapters);
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dprintf("Network Load Balancing is currently bound to %u adapter(s).\n", dwNumAdapters);
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/* Get the base address of the global array of NLB adapter structures. */
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pAdapter = GetExpression(UNIV_ADAPTERS);
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if (!pAdapter) {
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ErrorCheckSymbols(UNIV_ADAPTERS);
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return;
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}
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/* Find out the size of a MAIN_ADAPTER structure. */
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dwAdapterSize = GetTypeSize(MAIN_ADAPTER);
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/* Loop through all adapters in use and print some information about them. */
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for (dwIndex = 0; dwIndex < CVY_MAX_ADAPTERS; dwIndex++) {
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ULONG dwValue;
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/* Retrieve the used/unused state of the adapter. */
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GetFieldValue(pAdapter, MAIN_ADAPTER, MAIN_ADAPTER_FIELD_USED, dwValue);
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/* If the adapter is in use, or the user specified HIGH verbosity, print the adapter. */
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if (dwValue || (dwVerbosity == VERBOSITY_HIGH)) {
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/* Print the adapter index. */
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dprintf("\n[%u] ", dwIndex);
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/* Print the adapter contents. If verbosity is high, change it to
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medium - we don't want to recurse into context from here. */
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PrintAdapter(pAdapter, (dwVerbosity == VERBOSITY_HIGH) ? VERBOSITY_MEDIUM : dwVerbosity);
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}
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/* Advance the pointer to the next index in the array of structures. */
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pAdapter += dwAdapterSize;
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}
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}
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/*
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* Function: nlbadapter
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* Description: Prints NLB adapter information. Takes an adapter pointer and an
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* optional verbosity as arguments. Default verbosity is MEDIUM.
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* Author: Created by shouse, 1.5.01
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*/
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DECLARE_API (nlbadapter) {
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ULONG dwVerbosity = VERBOSITY_LOW;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pAdapter;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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/* Make sure at least one argument, the adapter pointer, is there. */
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if (!args || !(*args)) {
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PrintUsage(USAGE_ADAPTER);
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return;
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}
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/* Get the address of the NLB adapter block from the command line. */
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pAdapter = (ULONG64)GetExpression(args);
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/* Copy the argument list into a temporary buffer. */
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strcpy(szArgBuffer, args);
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/* Peel out all of the tokenized strings. */
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for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
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strcpy(&szArgList[index++][0], p);
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/* If a verbosity was specified, get it. */
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if (index == 2) dwVerbosity = atoi(&szArgList[1][0]);
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/* If too many arguments were given, or the verbosity was out of range, complain. */
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if ((index > 2) || (dwVerbosity > VERBOSITY_HIGH)) {
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PrintUsage(USAGE_ADAPTER);
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return;
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}
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/* Print the adapter contents. */
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PrintAdapter(pAdapter, dwVerbosity);
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}
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/*
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* Function: nlbctxt
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* Description: Prints NLB context information. Takes a context pointer and an
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* optional verbosity as arguments. Default verbosity is LOW.
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* Author: Created by shouse, 1.21.01
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*/
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DECLARE_API (nlbctxt) {
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ULONG dwVerbosity = VERBOSITY_LOW;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pContext;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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/* Make sure at least one argument, the context pointer, is there. */
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if (!args || !(*args)) {
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PrintUsage(USAGE_CONTEXT);
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return;
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}
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/* Get the address of the NLB context block from the command line. */
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pContext = (ULONG64)GetExpression(args);
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/* Copy the argument list into a temporary buffer. */
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strcpy(szArgBuffer, args);
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/* Peel out all of the tokenized strings. */
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for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
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strcpy(&szArgList[index++][0], p);
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/* If a verbosity was specified, get it. */
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if (index == 2) dwVerbosity = atoi(&szArgList[1][0]);
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/* If too many arguments were given, or the verbosity was out of range, complain. */
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if ((index > 2) || (dwVerbosity > VERBOSITY_HIGH)) {
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PrintUsage(USAGE_CONTEXT);
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return;
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}
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/* Print the context contents. */
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PrintContext(pContext, dwVerbosity);
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}
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/*
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* Function: nlbload
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* Description: Prints NLB load information. Takes a load pointer and an optional
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* verbosity as arguments. Default verbosity is LOW.
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* Author: Created by shouse, 2.1.01
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*/
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DECLARE_API (nlbload) {
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ULONG dwVerbosity = VERBOSITY_LOW;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pLoad;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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/* Make sure at least one argument, the load pointer, is there. */
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if (!args || !(*args)) {
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PrintUsage(USAGE_LOAD);
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return;
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}
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/* Get the address of the NLB load block from the command line. */
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pLoad = (ULONG64)GetExpression(args);
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/* Copy the argument list into a temporary buffer. */
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strcpy(szArgBuffer, args);
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/* Peel out all of the tokenized strings. */
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for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
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strcpy(&szArgList[index++][0], p);
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/* If a verbosity was specified, get it. */
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if (index == 2) dwVerbosity = atoi(&szArgList[1][0]);
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/* If too many arguments were given, or the verbosity was out of range, complain. */
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if ((index > 2) || (dwVerbosity > VERBOSITY_HIGH)) {
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PrintUsage(USAGE_LOAD);
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return;
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}
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/* Print the load contents. */
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PrintLoad(pLoad, dwVerbosity);
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}
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/*
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* Function: nlbparams
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* Description: Prints NLB parameter information. Takes a parameter pointer and an
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* optional verbosity as arguments. Default verbosity is LOW.
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* Author: Created by shouse, 1.21.01
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*/
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DECLARE_API (nlbparams) {
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ULONG dwVerbosity = VERBOSITY_LOW;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pParams;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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/* Make sure at least one argument, the params pointer, is there. */
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if (!args || !(*args)) {
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PrintUsage(USAGE_PARAMS);
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return;
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}
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/* Get the address of the NLB params block from the command line. */
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pParams = (ULONG64)GetExpression(args);
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/* Copy the argument list into a temporary buffer. */
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strcpy(szArgBuffer, args);
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/* Peel out all of the tokenized strings. */
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for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
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strcpy(&szArgList[index++][0], p);
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/* If a verbosity was specified, get it. */
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if (index == 2) dwVerbosity = atoi(&szArgList[1][0]);
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/* If too many arguments were given, or the verbosity was out of range, complain. */
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if ((index > 2) || (dwVerbosity > VERBOSITY_HIGH)) {
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PrintUsage(USAGE_PARAMS);
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return;
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}
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/* Print the parameter contents. */
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PrintParams(pParams, dwVerbosity);
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}
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/*
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* Function: nlbresp
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* Description: Prints out the NLB private packet data for a given packet. Takes a
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* packet pointer and an optional direction as arguments. If not specified,
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* the packet is presumed to be on the receive path.
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* Author: Created by shouse, 1.31.01
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*/
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DECLARE_API (nlbresp) {
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ULONG dwDirection = DIRECTION_RECEIVE;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pPacket;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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/* Make sure at least one argument, the packet pointer, is there. */
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if (!args || !(*args)) {
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PrintUsage(USAGE_RESP);
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return;
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}
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/* Get the address of the NDIS packet from the command line. */
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pPacket = (ULONG64)GetExpression(args);
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/* Copy the argument list into a temporary buffer. */
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strcpy(szArgBuffer, args);
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/* Peel out all of the tokenized strings. */
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for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
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strcpy(&szArgList[index++][0], p);
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/* If a direction was specified, get it. */
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if (index == 2) dwDirection = atoi(&szArgList[1][0]);
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/* If too many arguments were given, or the direction was out of range, complain. */
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if ((index > 2) || (dwDirection > DIRECTION_SEND)) {
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PrintUsage(USAGE_RESP);
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return;
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}
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/* Print the NLB private data buffer contents. */
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PrintResp(pPacket, dwDirection);
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}
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/*
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* Function: nlbadapters
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* Description: Prints all NLB adapter strucutres in use. Verbosity is always LOW.
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* Author: Created by shouse, 1.5.01
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*/
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DECLARE_API (nlbteams) {
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ULONG64 pTeam;
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ULONG64 pAddr;
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ULONG dwNumTeams = 0;
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ULONG dwValue;
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/* Get the base address of the global linked list of BDA teams. */
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pAddr = GetExpression(UNIV_BDA_TEAMS);
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if (!pAddr) {
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ErrorCheckSymbols(UNIV_BDA_TEAMS);
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return;
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}
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/* Get the pointer to the first team. */
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pTeam = GetPointerFromAddress(pAddr);
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dprintf("NLB bi-directional affinity teams:\n");
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/* Loop through all teams in the list and print them out. */
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while (pTeam) {
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/* Increment the number of teams found - only used if none are found. */
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dwNumTeams++;
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dprintf("\n");
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/* Print out the team. */
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PrintBDATeam(pTeam);
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/* Get the offset of the params pointer. */
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if (GetFieldOffset(BDA_TEAM, BDA_TEAM_FIELD_NEXT, &dwValue))
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dprintf("Can't get offset of %s in %s\n", BDA_TEAM_FIELD_NEXT, BDA_TEAM);
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else {
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pAddr = pTeam + dwValue;
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/* Retrieve the pointer. */
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pTeam = GetPointerFromAddress(pAddr);
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}
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}
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if (!dwNumTeams) dprintf("\nNone.\n");
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}
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/*
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* Function: nlbconnq
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* Description: This function prints out all connection descriptors in a given
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* queue of descriptors.
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* Author: Created by shouse, 4.15.01
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*/
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DECLARE_API (nlbconnq) {
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ULONG dwMaxEntries = 0xffffffff;
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CHAR szArgList[10][MAX_PATH];
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CHAR szArgBuffer[MAX_PATH];
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ULONG64 pQueue;
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INT index = 0;
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CHAR * str;
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CHAR * p;
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/* Make sure at least one argument, the queue pointer, is there. */
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if (!args || !(*args)) {
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PrintUsage(USAGE_CONNQ);
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return;
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}
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/* Get the address of the queue from the command line. */
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pQueue = (ULONG64)GetExpression(args);
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/* Copy the argument list into a temporary buffer. */
|
|
strcpy(szArgBuffer, args);
|
|
|
|
/* Peel out all of the tokenized strings. */
|
|
for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
|
|
strcpy(&szArgList[index++][0], p);
|
|
|
|
/* If a maximum number of entries to print was specified, get it. */
|
|
if (index == 2) dwMaxEntries = atoi(&szArgList[1][0]);
|
|
|
|
/* If too many arguments were given,complain. */
|
|
if (index > 2) {
|
|
PrintUsage(USAGE_RESP);
|
|
return;
|
|
}
|
|
|
|
/* Print the NLB private data buffer contents. */
|
|
PrintQueue(pQueue, dwMaxEntries);
|
|
}
|
|
|
|
/*
|
|
* Function: nlbmap
|
|
* Description: This function will perform the NLB hashing algorithm to determine
|
|
* whether a given packet - identified by a (Src IP, Src port, Dst IP,
|
|
* Dst port) tuple would be handled by this host or another host.
|
|
* Further, if the connection is a known TCP connection, the associated
|
|
* descriptor and state information are displayed.
|
|
* Author:
|
|
*/
|
|
DECLARE_API (nlbmap) {
|
|
CHAR szArgList[10][MAX_PATH];
|
|
CHAR szArgBuffer[MAX_PATH];
|
|
TCP_PACKET_TYPE ePktType = SYN;
|
|
ULONG64 pLoad;
|
|
ULONG dwClientIPAddress;
|
|
ULONG dwClientPort;
|
|
ULONG dwServerIPAddress;
|
|
ULONG dwServerPort;
|
|
BOOLEAN bIsTCP = TRUE;
|
|
INT index = 0;
|
|
CHAR * str;
|
|
CHAR * p;
|
|
|
|
/* Make sure that the load pointer is there. */
|
|
if (!args || !(*args)) {
|
|
PrintUsage(USAGE_MAP);
|
|
return;
|
|
}
|
|
|
|
/* Get the address of the load module from the command line. */
|
|
pLoad = (ULONG64)GetExpression(args);
|
|
|
|
/* Copy the argument list into a temporary buffer. */
|
|
strcpy(szArgBuffer, args);
|
|
|
|
/* Peel out all of the tokenized strings. */
|
|
for (p = mystrtok(szArgBuffer, " \t," ); p && *p; p = mystrtok(NULL, " \t,"))
|
|
strcpy(&szArgList[index++][0], p);
|
|
|
|
/* If too many arguments were given, complain. */
|
|
if ((index > 7) || (index < 5)) {
|
|
PrintUsage(USAGE_MAP);
|
|
return;
|
|
}
|
|
|
|
/* If we find a '.' in the IP address, then we need to convert it using inet_addr.
|
|
If there is no '.', then we assume its already a DWORD in network byte order. */
|
|
if (strchr(szArgList[1], '.'))
|
|
dwClientIPAddress = inet_addr(szArgList[1]);
|
|
else
|
|
dwClientIPAddress = atoi(&szArgList[1][0]);
|
|
|
|
dwClientPort = atoi(&szArgList[2][0]);
|
|
|
|
/* Make sure the port is between 0 and 65535. */
|
|
if (dwClientPort > CVY_MAX_PORT) {
|
|
dprintf("Invalid port: %s\n", dwClientPort);
|
|
return;
|
|
}
|
|
|
|
/* If we find a '.' in the IP address, then we need to convert it using inet_addr.
|
|
If there is no '.', then we assume its already a DWORD in network byte order. */
|
|
if (strchr(szArgList[1], '.'))
|
|
dwServerIPAddress = inet_addr(szArgList[3]);
|
|
else
|
|
dwServerIPAddress = atoi(&szArgList[3][0]);
|
|
|
|
dwServerPort = atoi(&szArgList[4][0]);
|
|
|
|
/* Make sure the port is between 0 and 65535. */
|
|
if (dwServerPort > CVY_MAX_PORT) {
|
|
dprintf("Invalid port: %s\n", dwServerPort);
|
|
return;
|
|
}
|
|
|
|
/* If a sixth argument has been specified, it is the protocol, which should be either TCP or UDP. */
|
|
if (index >= 6) {
|
|
if (!_stricmp(szArgList[5], "TCP")) {
|
|
bIsTCP = TRUE;
|
|
} else if (!_stricmp(szArgList[5], "UDP")) {
|
|
bIsTCP = FALSE;
|
|
} else {
|
|
dprintf("Invalid protocol: %s\n", szArgList[5]);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* If an seventh argument has been specified, it is TCP packet type, which should be SYN, DATA, FIN or RST. */
|
|
if (index >= 7) {
|
|
if (!bIsTCP) {
|
|
dprintf("UDP connections do not have packet types\n");
|
|
return;
|
|
}
|
|
|
|
if (!_stricmp(szArgList[6], "SYN")) {
|
|
ePktType = SYN;
|
|
} else if (!_stricmp(szArgList[6], "DATA")) {
|
|
ePktType = DATA;
|
|
} else if (!_stricmp(szArgList[6], "FIN")) {
|
|
ePktType = FIN;
|
|
} else if (!_stricmp(szArgList[6], "RST")) {
|
|
ePktType = RST;
|
|
} else {
|
|
dprintf("Invalid TCP packet type: %s\n", szArgList[6]);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Hash on this tuple and print the results. */
|
|
PrintMap(pLoad, dwClientIPAddress, dwClientPort, dwServerIPAddress, dwServerPort, bIsTCP, ePktType);
|
|
}
|
|
|
|
/*
|
|
* Function: nlbhash
|
|
* Description:
|
|
* Author: Created by shouse, 4.15.01
|
|
*/
|
|
DECLARE_API (nlbhash) {
|
|
|
|
dprintf("This extension has not yet been implemented.\n");
|
|
}
|
|
|
|
/*
|
|
* Function: nlbpkt
|
|
* Description: Prints out the contents of an NLB-specific packet. Takes a packet
|
|
* pointer as an argument.
|
|
* Author: Created by shouse, 2.1.01
|
|
*/
|
|
DECLARE_API (nlbpkt) {
|
|
|
|
dprintf("This extension should take a packet pointer and parse the packet to\n");
|
|
dprintf(" determine whether it is an NLB heartbeat, remote control or IGMP join.\n");
|
|
dprintf(" If the packet is one of those NLB-specific types, it will dump the\n");
|
|
dprintf(" contents of the packet. Otherwise, it prints just basic packet info,\n");
|
|
dprintf(" such as source and destination IP addresses and port numbers.\n");
|
|
|
|
dprintf("\n");
|
|
|
|
dprintf("This extension has not yet been implemented.\n");
|
|
}
|