271 lines
8.1 KiB
C
Executable File
271 lines
8.1 KiB
C
Executable File
/*
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*
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* SNMP MIB entries for the IP subsystem.
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*
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* Alan Cox <gw4pts@gw4pts.ampr.org>
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*
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* We don't chose to implement SNMP in the kernel (this would
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* be silly as SNMP is a pain in the backside in places). We do
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* however need to collect the MIB statistics and export them
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* out of /proc (eventually)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* $Id: //BBN_Linux/Branch/Branch_for_Rel_TP_ASEAN_20161216/tclinux_phoenix/bootrom/bootram/include/net/snmp.h#1 $
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*
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*/
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#ifndef _SNMP_H
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#define _SNMP_H
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#include <linux/cache.h>
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/*
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* We use all unsigned longs. Linux will soon be so reliable that even these
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* will rapidly get too small 8-). Seriously consider the IpInReceives count
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* on the 20Gb/s + networks people expect in a few years time!
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*/
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/*
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* The rule for padding:
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* Best is power of two because then the right structure can be found by a simple
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* shift. The structure should be always cache line aligned.
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* gcc needs n=alignto(cachelinesize, popcnt(sizeof(bla_mib))) shift/add instructions
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* to emulate multiply in case it is not power-of-two. Currently n is always <=3 for
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* all sizes so simple cache line alignment is enough.
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*
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* The best solution would be a global CPU local area , especially on 64 and 128byte
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* cacheline machine it makes a *lot* of sense -AK
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*/
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struct ip_mib
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{
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unsigned long IpInReceives;
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unsigned long IpInHdrErrors;
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unsigned long IpInAddrErrors;
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unsigned long IpForwDatagrams;
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unsigned long IpInUnknownProtos;
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unsigned long IpInDiscards;
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unsigned long IpInDelivers;
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unsigned long IpOutRequests;
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unsigned long IpOutDiscards;
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unsigned long IpOutNoRoutes;
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unsigned long IpReasmTimeout;
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unsigned long IpReasmReqds;
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unsigned long IpReasmOKs;
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unsigned long IpReasmFails;
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unsigned long IpFragOKs;
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unsigned long IpFragFails;
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unsigned long IpFragCreates;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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struct ipv6_mib
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{
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unsigned long Ip6InReceives;
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unsigned long Ip6InHdrErrors;
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unsigned long Ip6InTooBigErrors;
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unsigned long Ip6InNoRoutes;
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unsigned long Ip6InAddrErrors;
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unsigned long Ip6InUnknownProtos;
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unsigned long Ip6InTruncatedPkts;
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unsigned long Ip6InDiscards;
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unsigned long Ip6InDelivers;
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unsigned long Ip6OutForwDatagrams;
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unsigned long Ip6OutRequests;
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unsigned long Ip6OutDiscards;
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unsigned long Ip6OutNoRoutes;
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unsigned long Ip6ReasmTimeout;
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unsigned long Ip6ReasmReqds;
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unsigned long Ip6ReasmOKs;
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unsigned long Ip6ReasmFails;
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unsigned long Ip6FragOKs;
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unsigned long Ip6FragFails;
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unsigned long Ip6FragCreates;
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unsigned long Ip6InMcastPkts;
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unsigned long Ip6OutMcastPkts;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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struct icmp_mib
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{
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unsigned long IcmpInMsgs;
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unsigned long IcmpInErrors;
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unsigned long IcmpInDestUnreachs;
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unsigned long IcmpInTimeExcds;
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unsigned long IcmpInParmProbs;
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unsigned long IcmpInSrcQuenchs;
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unsigned long IcmpInRedirects;
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unsigned long IcmpInEchos;
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unsigned long IcmpInEchoReps;
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unsigned long IcmpInTimestamps;
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unsigned long IcmpInTimestampReps;
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unsigned long IcmpInAddrMasks;
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unsigned long IcmpInAddrMaskReps;
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unsigned long IcmpOutMsgs;
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unsigned long IcmpOutErrors;
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unsigned long IcmpOutDestUnreachs;
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unsigned long IcmpOutTimeExcds;
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unsigned long IcmpOutParmProbs;
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unsigned long IcmpOutSrcQuenchs;
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unsigned long IcmpOutRedirects;
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unsigned long IcmpOutEchos;
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unsigned long IcmpOutEchoReps;
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unsigned long IcmpOutTimestamps;
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unsigned long IcmpOutTimestampReps;
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unsigned long IcmpOutAddrMasks;
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unsigned long IcmpOutAddrMaskReps;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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struct icmpv6_mib
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{
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unsigned long Icmp6InMsgs;
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unsigned long Icmp6InErrors;
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unsigned long Icmp6InDestUnreachs;
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unsigned long Icmp6InPktTooBigs;
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unsigned long Icmp6InTimeExcds;
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unsigned long Icmp6InParmProblems;
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unsigned long Icmp6InEchos;
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unsigned long Icmp6InEchoReplies;
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unsigned long Icmp6InGroupMembQueries;
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unsigned long Icmp6InGroupMembResponses;
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unsigned long Icmp6InGroupMembReductions;
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unsigned long Icmp6InRouterSolicits;
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unsigned long Icmp6InRouterAdvertisements;
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unsigned long Icmp6InNeighborSolicits;
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unsigned long Icmp6InNeighborAdvertisements;
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unsigned long Icmp6InRedirects;
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unsigned long Icmp6OutMsgs;
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unsigned long Icmp6OutDestUnreachs;
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unsigned long Icmp6OutPktTooBigs;
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unsigned long Icmp6OutTimeExcds;
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unsigned long Icmp6OutParmProblems;
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unsigned long Icmp6OutEchoReplies;
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unsigned long Icmp6OutRouterSolicits;
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unsigned long Icmp6OutNeighborSolicits;
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unsigned long Icmp6OutNeighborAdvertisements;
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unsigned long Icmp6OutRedirects;
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unsigned long Icmp6OutGroupMembResponses;
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unsigned long Icmp6OutGroupMembReductions;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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struct tcp_mib
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{
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unsigned long TcpRtoAlgorithm;
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unsigned long TcpRtoMin;
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unsigned long TcpRtoMax;
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unsigned long TcpMaxConn;
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unsigned long TcpActiveOpens;
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unsigned long TcpPassiveOpens;
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unsigned long TcpAttemptFails;
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unsigned long TcpEstabResets;
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unsigned long TcpCurrEstab;
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unsigned long TcpInSegs;
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unsigned long TcpOutSegs;
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unsigned long TcpRetransSegs;
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unsigned long TcpInErrs;
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unsigned long TcpOutRsts;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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struct udp_mib
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{
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unsigned long UdpInDatagrams;
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unsigned long UdpNoPorts;
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unsigned long UdpInErrors;
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unsigned long UdpOutDatagrams;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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struct linux_mib
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{
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unsigned long SyncookiesSent;
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unsigned long SyncookiesRecv;
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unsigned long SyncookiesFailed;
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unsigned long EmbryonicRsts;
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unsigned long PruneCalled;
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unsigned long RcvPruned;
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unsigned long OfoPruned;
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unsigned long OutOfWindowIcmps;
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unsigned long LockDroppedIcmps;
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unsigned long TimeWaited;
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unsigned long TimeWaitRecycled;
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unsigned long TimeWaitKilled;
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unsigned long PAWSPassiveRejected;
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unsigned long PAWSActiveRejected;
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unsigned long PAWSEstabRejected;
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unsigned long DelayedACKs;
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unsigned long DelayedACKLocked;
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unsigned long DelayedACKLost;
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unsigned long ListenOverflows;
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unsigned long ListenDrops;
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unsigned long TCPPrequeued;
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unsigned long TCPDirectCopyFromBacklog;
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unsigned long TCPDirectCopyFromPrequeue;
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unsigned long TCPPrequeueDropped;
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unsigned long TCPHPHits;
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unsigned long TCPHPHitsToUser;
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unsigned long TCPPureAcks;
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unsigned long TCPHPAcks;
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unsigned long TCPRenoRecovery;
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unsigned long TCPSackRecovery;
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unsigned long TCPSACKReneging;
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unsigned long TCPFACKReorder;
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unsigned long TCPSACKReorder;
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unsigned long TCPRenoReorder;
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unsigned long TCPTSReorder;
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unsigned long TCPFullUndo;
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unsigned long TCPPartialUndo;
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unsigned long TCPDSACKUndo;
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unsigned long TCPLossUndo;
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unsigned long TCPLoss;
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unsigned long TCPLostRetransmit;
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unsigned long TCPRenoFailures;
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unsigned long TCPSackFailures;
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unsigned long TCPLossFailures;
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unsigned long TCPFastRetrans;
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unsigned long TCPForwardRetrans;
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unsigned long TCPSlowStartRetrans;
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unsigned long TCPTimeouts;
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unsigned long TCPRenoRecoveryFail;
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unsigned long TCPSackRecoveryFail;
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unsigned long TCPSchedulerFailed;
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unsigned long TCPRcvCollapsed;
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unsigned long TCPDSACKOldSent;
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unsigned long TCPDSACKOfoSent;
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unsigned long TCPDSACKRecv;
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unsigned long TCPDSACKOfoRecv;
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unsigned long TCPAbortOnSyn;
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unsigned long TCPAbortOnData;
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unsigned long TCPAbortOnClose;
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unsigned long TCPAbortOnMemory;
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unsigned long TCPAbortOnTimeout;
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unsigned long TCPAbortOnLinger;
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unsigned long TCPAbortFailed;
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unsigned long TCPMemoryPressures;
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unsigned long __pad[0];
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} ____cacheline_aligned;
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/*
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* FIXME: On x86 and some other CPUs the split into user and softirq parts is not needed because
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* addl $1,memory is atomic against interrupts (but atomic_inc would be overkill because of the lock
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* cycles). Wants new nonlocked_atomic_inc() primitives -AK
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*/
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#define SNMP_INC_STATS(mib, field) ((mib)[2*smp_processor_id()+!in_softirq()].field++)
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#define SNMP_INC_STATS_BH(mib, field) ((mib)[2*smp_processor_id()].field++)
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#define SNMP_INC_STATS_USER(mib, field) ((mib)[2*smp_processor_id()+1].field++)
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#endif
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