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235 lines
4.4 KiB
235 lines
4.4 KiB
/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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pktext.c
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Abstract:
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This file contains the generic routines
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for debugging NBF packet structures.
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Author:
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Chaitanya Kodeboyina
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Environment:
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User Mode
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include "pktext.h"
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//
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// Exported Functions
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//
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DECLARE_API( pkts )
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/*++
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Routine Description:
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Print a list of packets given the
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head LIST_ENTRY.
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Arguments:
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args - Address of the list entry, &
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Detail of debug information
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Return Value:
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None
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--*/
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{
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ULONG proxyPtr;
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ULONG printDetail;
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// Get list-head address & debug print level
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printDetail = SUMM_INFO;
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if (*args)
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{
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sscanf(args, "%x %lu", &proxyPtr, &printDetail);
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}
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PrintPacketList(NULL, proxyPtr, printDetail);
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}
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DECLARE_API( pkt )
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/*++
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Routine Description:
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Print the NBF Packet at a location
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Arguments:
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args -
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Pointer to the NBF Packet
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Detail of debug information
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Return Value:
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None
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--*/
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{
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TP_PACKET Packet;
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ULONG printDetail;
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ULONG proxyPtr;
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// Get the detail of debug information needed
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printDetail = NORM_SHAL;
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if (*args)
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{
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sscanf(args, "%x %lu", &proxyPtr, &printDetail);
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}
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// Get the NBF Packet
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if (ReadPacket(&Packet, proxyPtr) != 0)
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return;
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// Print this Packet
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PrintPacket(&Packet, proxyPtr, printDetail);
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}
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//
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// Global Helper Functions
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//
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VOID
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PrintPacketList(PVOID ListEntryPointer, ULONG ListEntryProxy, ULONG printDetail)
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{
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TP_PACKET Packet;
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LIST_ENTRY PacketList;
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PLIST_ENTRY PacketListPtr;
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PLIST_ENTRY PacketListProxy;
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PLIST_ENTRY p, q;
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ULONG proxyPtr;
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ULONG numPkts;
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ULONG bytesRead;
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// Get list-head address & debug print level
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proxyPtr = ListEntryProxy;
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if (ListEntryPointer == NULL)
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{
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// Read the list entry of NBF packets
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if (!ReadMemory(proxyPtr, &PacketList, sizeof(LIST_ENTRY), &bytesRead))
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{
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dprintf("%s @ %08x: Could not read structure\n",
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"Packet ListEntry", proxyPtr);
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return;
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}
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PacketListPtr = &PacketList;
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}
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else
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{
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PacketListPtr = ListEntryPointer;
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}
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// Traverse the doubly linked list
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dprintf("Packets:\n");
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PacketListProxy = (PLIST_ENTRY)proxyPtr;
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numPkts = 0;
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p = PacketListPtr->Flink;
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while (p != PacketListProxy)
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{
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// Another Packet
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numPkts++;
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// Get Packet Ptr
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proxyPtr = (ULONG) CONTAINING_RECORD (p, TP_PACKET, Linkage);
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// Get NBF Packet
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if (ReadPacket(&Packet, proxyPtr) != 0)
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break;
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// Print the Packet
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PrintPacket(&Packet, proxyPtr, printDetail);
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// Go to the next one
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p = Packet.Linkage.Flink;
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// Free the Packet
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FreePacket(&Packet);
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}
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if (p == PacketListProxy)
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{
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dprintf("Number of Packets: %lu\n", numPkts);
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}
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}
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//
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// Local Helper Functions
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//
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UINT
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ReadPacket(PTP_PACKET pPkt, ULONG proxyPtr)
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{
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ULONG bytesRead;
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// Read the current NBF packet
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if (!ReadMemory(proxyPtr, pPkt, sizeof(TP_PACKET), &bytesRead))
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{
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dprintf("%s @ %08x: Could not read structure\n",
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"Packet", proxyPtr);
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return -1;
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}
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return 0;
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}
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UINT
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PrintPacket(PTP_PACKET pPkt, ULONG proxyPtr, ULONG printDetail)
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{
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// Is this a valid NBF packet ?
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if (pPkt->Type != NBF_PACKET_SIGNATURE)
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{
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dprintf("%s @ %08x: Could not match signature\n",
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"Packet", proxyPtr);
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return -1;
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}
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// What detail do we print at ?
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if (printDetail > MAX_DETAIL)
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printDetail = MAX_DETAIL;
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// Print Information at reqd detail
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FieldInPacket(proxyPtr, NULL, printDetail);
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return 0;
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}
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VOID
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FieldInPacket(ULONG structAddr, CHAR *fieldName, ULONG printDetail)
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{
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TP_PACKET Packet;
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if (ReadPacket(&Packet, structAddr) == 0)
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{
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PrintFields(&Packet, structAddr, fieldName, printDetail, &PacketInfo);
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}
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}
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UINT
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FreePacket(PTP_PACKET pPkt)
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{
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return 0;
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}
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