Leaked source code of windows server 2003
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/*++
Copyright (c) 2001 Microsoft Corporation
Module Name:
info.h
Abstract:
This module contains the definitions for maintaining IP statistics.
Author:
Dave Thaler (dthaler) 10-Apr-2001
--*/
#pragma once
extern CACHE_ALIGN IPSNMPInfo IPSInfo;
extern ICMPv6Stats ICMPv6InStats;
extern ICMPv6Stats ICMPv6OutStats;
typedef struct CACHE_ALIGN IPInternalPerCpuStats {
ulong ics_inreceives;
ulong ics_indelivers;
ulong ics_forwdatagrams;
ulong ics_outrequests;
} IPInternalPerCpuStats;
#define IPS_MAX_PROCESSOR_BUCKETS 8
extern IPInternalPerCpuStats IPPerCpuStats[IPS_MAX_PROCESSOR_BUCKETS];
extern uint NumForwardingInterfaces;
__forceinline
void IPSIncrementInReceiveCount(void)
{
const ulong Index = KeGetCurrentProcessorNumber() % IPS_MAX_PROCESSOR_BUCKETS;
IPPerCpuStats[Index].ics_inreceives++;
}
__forceinline
void IPSIncrementInDeliverCount(void)
{
const ulong Index = KeGetCurrentProcessorNumber() % IPS_MAX_PROCESSOR_BUCKETS;
IPPerCpuStats[Index].ics_indelivers++;
}
__forceinline
void IPSIncrementOutRequestCount(void)
{
const ulong Index = KeGetCurrentProcessorNumber() % IPS_MAX_PROCESSOR_BUCKETS;
IPPerCpuStats[Index].ics_outrequests++;
}
__forceinline
void IPSIncrementForwDatagramCount(void)
{
const ulong Index = KeGetCurrentProcessorNumber() % IPS_MAX_PROCESSOR_BUCKETS;
IPPerCpuStats[Index].ics_forwdatagrams++;
}
__inline
void IPSGetTotalCounts(IPInternalPerCpuStats* Stats)
{
ulong Index;
const ulong MaxIndex = MIN(KeNumberProcessors, IPS_MAX_PROCESSOR_BUCKETS);
RtlZeroMemory(Stats, sizeof(IPInternalPerCpuStats));
for (Index = 0; Index < MaxIndex; Index++) {
Stats->ics_inreceives += IPPerCpuStats[Index].ics_inreceives;
Stats->ics_indelivers += IPPerCpuStats[Index].ics_indelivers;
Stats->ics_outrequests += IPPerCpuStats[Index].ics_outrequests;
Stats->ics_forwdatagrams += IPPerCpuStats[Index].ics_forwdatagrams;
}
}