include/net1/snmp.h

   1 /*
   2  *
   3  *              SNMP MIB entries for the IP subsystem.
   4  *
   5  *              Alan Cox <gw4pts@gw4pts.ampr.org>
   6  *
   7  *              We don't chose to implement SNMP in the kernel (this would
   8  *              be silly as SNMP is a pain in the backside in places). We do
   9  *              however need to collect the MIB statistics and export them
  10  *              out of /proc (eventually)
  11  *
  12  *              This program is free software; you can redistribute it and/or
  13  *              modify it under the terms of the GNU General Public License
  14  *              as published by the Free Software Foundation; either version
  15  *              2 of the License, or (at your option) any later version.
  16  *
  17  *              $Id: snmp.h,v 1.1.1.1 2005/04/11 02:51:08 jack Exp $
  18  *
  19  */
  20
  21 #ifndef _SNMP_H
  22 #define _SNMP_H
  23
  24 #include <linux/cache.h>
  25
  26 /*
  27  *      We use all unsigned longs. Linux will soon be so reliable that even these
  28  *      will rapidly get too small 8-). Seriously consider the IpInReceives count
  29  *      on the 20Gb/s + networks people expect in a few years time!
  30  */
  31
  32 /*
  33  * The rule for padding:
  34  * Best is power of two because then the right structure can be found by a simple
  35  * shift. The structure should be always cache line aligned.
  36  * gcc needs n=alignto(cachelinesize, popcnt(sizeof(bla_mib))) shift/add instructions
  37  * to emulate multiply in case it is not power-of-two. Currently n is always <=3 for
  38  * all sizes so simple cache line alignment is enough.
  39  *
  40  * The best solution would be a global CPU local area , especially on 64 and 128byte
  41  * cacheline machine it makes a *lot* of sense -AK
  42  */
  43
  44
  45 struct ip_mib
  46 {
  47         unsigned long   IpInReceives;
  48         unsigned long   IpInHdrErrors;
  49         unsigned long   IpInAddrErrors;
  50         unsigned long   IpForwDatagrams;
  51         unsigned long   IpInUnknownProtos;
  52         unsigned long   IpInDiscards;
  53         unsigned long   IpInDelivers;
  54         unsigned long   IpOutRequests;
  55         unsigned long   IpOutDiscards;
  56         unsigned long   IpOutNoRoutes;
  57         unsigned long   IpReasmTimeout;
  58         unsigned long   IpReasmReqds;
  59         unsigned long   IpReasmOKs;
  60         unsigned long   IpReasmFails;
  61         unsigned long   IpFragOKs;
  62         unsigned long   IpFragFails;
  63         unsigned long   IpFragCreates;
  64         unsigned long   __pad[0];
  65 } ____cacheline_aligned;
  66
  67 struct ipv6_mib
  68 {
  69         unsigned long   Ip6InReceives;
  70         unsigned long   Ip6InHdrErrors;
  71         unsigned long   Ip6InTooBigErrors;
  72         unsigned long   Ip6InNoRoutes;
  73         unsigned long   Ip6InAddrErrors;
  74         unsigned long   Ip6InUnknownProtos;
  75         unsigned long   Ip6InTruncatedPkts;
  76         unsigned long   Ip6InDiscards;
  77         unsigned long   Ip6InDelivers;
  78         unsigned long   Ip6OutForwDatagrams;
  79         unsigned long   Ip6OutRequests;
  80         unsigned long   Ip6OutDiscards;
  81         unsigned long   Ip6OutNoRoutes;
  82         unsigned long   Ip6ReasmTimeout;
  83         unsigned long   Ip6ReasmReqds;
  84         unsigned long   Ip6ReasmOKs;
  85         unsigned long   Ip6ReasmFails;
  86         unsigned long   Ip6FragOKs;
  87         unsigned long   Ip6FragFails;
  88         unsigned long   Ip6FragCreates;
  89         unsigned long   Ip6InMcastPkts;
  90         unsigned long   Ip6OutMcastPkts;
  91         unsigned long   __pad[0];
  92 } ____cacheline_aligned;
  93
  94 struct icmp_mib
  95 {
  96         unsigned long   IcmpInMsgs;
  97         unsigned long   IcmpInErrors;
  98         unsigned long   IcmpInDestUnreachs;
  99         unsigned long   IcmpInTimeExcds;
 100         unsigned long   IcmpInParmProbs;
 101         unsigned long   IcmpInSrcQuenchs;
 102         unsigned long   IcmpInRedirects;
 103         unsigned long   IcmpInEchos;
 104         unsigned long   IcmpInEchoReps;
 105         unsigned long   IcmpInTimestamps;
 106         unsigned long   IcmpInTimestampReps;
 107         unsigned long   IcmpInAddrMasks;
 108         unsigned long   IcmpInAddrMaskReps;
 109         unsigned long   IcmpOutMsgs;
 110         unsigned long   IcmpOutErrors;
 111         unsigned long   IcmpOutDestUnreachs;
 112         unsigned long   IcmpOutTimeExcds;
 113         unsigned long   IcmpOutParmProbs;
 114         unsigned long   IcmpOutSrcQuenchs;
 115         unsigned long   IcmpOutRedirects;
 116         unsigned long   IcmpOutEchos;
 117         unsigned long   IcmpOutEchoReps;
 118         unsigned long   IcmpOutTimestamps;
 119         unsigned long   IcmpOutTimestampReps;
 120         unsigned long   IcmpOutAddrMasks;
 121         unsigned long   IcmpOutAddrMaskReps;
 122         unsigned long   dummy;
 123         unsigned long   __pad[0];
 124 } ____cacheline_aligned;
 125
 126 struct icmpv6_mib
 127 {
 128         unsigned long   Icmp6InMsgs;
 129         unsigned long   Icmp6InErrors;
 130
 131         unsigned long   Icmp6InDestUnreachs;
 132         unsigned long   Icmp6InPktTooBigs;
 133         unsigned long   Icmp6InTimeExcds;
 134         unsigned long   Icmp6InParmProblems;
 135
 136         unsigned long   Icmp6InEchos;
 137         unsigned long   Icmp6InEchoReplies;
 138         unsigned long   Icmp6InGroupMembQueries;
 139         unsigned long   Icmp6InGroupMembResponses;
 140         unsigned long   Icmp6InGroupMembReductions;
 141         unsigned long   Icmp6InRouterSolicits;
 142         unsigned long   Icmp6InRouterAdvertisements;
 143         unsigned long   Icmp6InNeighborSolicits;
 144         unsigned long   Icmp6InNeighborAdvertisements;
 145         unsigned long   Icmp6InRedirects;
 146
 147         unsigned long   Icmp6OutMsgs;
 148
 149         unsigned long   Icmp6OutDestUnreachs;
 150         unsigned long   Icmp6OutPktTooBigs;
 151         unsigned long   Icmp6OutTimeExcds;
 152         unsigned long   Icmp6OutParmProblems;
 153
 154         unsigned long   Icmp6OutEchoReplies;
 155         unsigned long   Icmp6OutRouterSolicits;
 156         unsigned long   Icmp6OutNeighborSolicits;
 157         unsigned long   Icmp6OutNeighborAdvertisements;
 158         unsigned long   Icmp6OutRedirects;
 159         unsigned long   Icmp6OutGroupMembResponses;
 160         unsigned long   Icmp6OutGroupMembReductions;
 161         unsigned long   __pad[0];
 162 } ____cacheline_aligned;
 163
 164 struct tcp_mib
 165 {
 166         unsigned long   TcpRtoAlgorithm;
 167         unsigned long   TcpRtoMin;
 168         unsigned long   TcpRtoMax;
 169         unsigned long   TcpMaxConn;
 170         unsigned long   TcpActiveOpens;
 171         unsigned long   TcpPassiveOpens;
 172         unsigned long   TcpAttemptFails;
 173         unsigned long   TcpEstabResets;
 174         unsigned long   TcpCurrEstab;
 175         unsigned long   TcpInSegs;
 176         unsigned long   TcpOutSegs;
 177         unsigned long   TcpRetransSegs;
 178         unsigned long   TcpInErrs;
 179         unsigned long   TcpOutRsts;
 180         unsigned long   __pad[0];
 181 } ____cacheline_aligned;
 182
 183 struct udp_mib
 184 {
 185         unsigned long   UdpInDatagrams;
 186         unsigned long   UdpNoPorts;
 187         unsigned long   UdpInErrors;
 188         unsigned long   UdpOutDatagrams;
 189         unsigned long   __pad[0];
 190 } ____cacheline_aligned;
 191
 192 struct linux_mib
 193 {
 194         unsigned long   SyncookiesSent;
 195         unsigned long   SyncookiesRecv;
 196         unsigned long   SyncookiesFailed;
 197         unsigned long   EmbryonicRsts;
 198         unsigned long   PruneCalled;
 199         unsigned long   RcvPruned;
 200         unsigned long   OfoPruned;
 201         unsigned long   OutOfWindowIcmps;
 202         unsigned long   LockDroppedIcmps;
 203         unsigned long   ArpFilter;
 204         unsigned long   TimeWaited;
 205         unsigned long   TimeWaitRecycled;
 206         unsigned long   TimeWaitKilled;
 207         unsigned long   PAWSPassiveRejected;
 208         unsigned long   PAWSActiveRejected;
 209         unsigned long   PAWSEstabRejected;
 210         unsigned long   DelayedACKs;
 211         unsigned long   DelayedACKLocked;
 212         unsigned long   DelayedACKLost;
 213         unsigned long   ListenOverflows;
 214         unsigned long   ListenDrops;
 215         unsigned long   TCPPrequeued;
 216         unsigned long   TCPDirectCopyFromBacklog;
 217         unsigned long   TCPDirectCopyFromPrequeue;
 218         unsigned long   TCPPrequeueDropped;
 219         unsigned long   TCPHPHits;
 220         unsigned long   TCPHPHitsToUser;
 221         unsigned long   TCPPureAcks;
 222         unsigned long   TCPHPAcks;
 223         unsigned long   TCPRenoRecovery;
 224         unsigned long   TCPSackRecovery;
 225         unsigned long   TCPSACKReneging;
 226         unsigned long   TCPFACKReorder;
 227         unsigned long   TCPSACKReorder;
 228         unsigned long   TCPRenoReorder;
 229         unsigned long   TCPTSReorder;
 230         unsigned long   TCPFullUndo;
 231         unsigned long   TCPPartialUndo;
 232         unsigned long   TCPDSACKUndo;
 233         unsigned long   TCPLossUndo;
 234         unsigned long   TCPLoss;
 235         unsigned long   TCPLostRetransmit;
 236         unsigned long   TCPRenoFailures;
 237         unsigned long   TCPSackFailures;
 238         unsigned long   TCPLossFailures;
 239         unsigned long   TCPFastRetrans;
 240         unsigned long   TCPForwardRetrans;
 241         unsigned long   TCPSlowStartRetrans;
 242         unsigned long   TCPTimeouts;
 243         unsigned long   TCPRenoRecoveryFail;
 244         unsigned long   TCPSackRecoveryFail;
 245         unsigned long   TCPSchedulerFailed;
 246         unsigned long   TCPRcvCollapsed;
 247         unsigned long   TCPDSACKOldSent;
 248         unsigned long   TCPDSACKOfoSent;
 249         unsigned long   TCPDSACKRecv;
 250         unsigned long   TCPDSACKOfoRecv;
 251         unsigned long   TCPAbortOnSyn;
 252         unsigned long   TCPAbortOnData;
 253         unsigned long   TCPAbortOnClose;
 254         unsigned long   TCPAbortOnMemory;
 255         unsigned long   TCPAbortOnTimeout;
 256         unsigned long   TCPAbortOnLinger;
 257         unsigned long   TCPAbortFailed;
 258         unsigned long   TCPMemoryPressures;
 259         unsigned long   __pad[0];
 260 } ____cacheline_aligned;
 261
 262
 263 /*
 264  * FIXME: On x86 and some other CPUs the split into user and softirq parts is not needed because
 265  * addl $1,memory is atomic against interrupts (but atomic_inc would be overkill because of the lock
 266  * cycles). Wants new nonlocked_atomic_inc() primitives -AK
 267  */
 268 #define SNMP_INC_STATS(mib, field) ((mib)[2*smp_processor_id()+!in_softirq()].field++)
 269 #define SNMP_INC_STATS_BH(mib, field) ((mib)[2*smp_processor_id()].field++)
 270 #define SNMP_INC_STATS_USER(mib, field) ((mib)[2*smp_processor_id()+1].field++)
 271
 272 #endif