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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 | /* * * SNMP MIB entries for the IP subsystem. * * Alan Cox <gw4pts@gw4pts.ampr.org> * * We don't chose to implement SNMP in the kernel (this would * be silly as SNMP is a pain in the backside in places). We do * however need to collect the MIB statistics and export them * out of /proc (eventually) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * $Id: snmp.h,v 1.19 2001/06/14 13:40:46 davem Exp $ * */ #ifndef _SNMP_H #define _SNMP_H #include <linux/cache.h> /* * We use all unsigned longs. Linux will soon be so reliable that even these * will rapidly get too small 8-). Seriously consider the IpInReceives count * on the 20Gb/s + networks people expect in a few years time! */ /* * The rule for padding: * Best is power of two because then the right structure can be found by a simple * shift. The structure should be always cache line aligned. * gcc needs n=alignto(cachelinesize, popcnt(sizeof(bla_mib))) shift/add instructions * to emulate multiply in case it is not power-of-two. Currently n is always <=3 for * all sizes so simple cache line alignment is enough. * * The best solution would be a global CPU local area , especially on 64 and 128byte * cacheline machine it makes a *lot* of sense -AK */ struct ip_mib { unsigned long IpInReceives; unsigned long IpInHdrErrors; unsigned long IpInAddrErrors; unsigned long IpForwDatagrams; unsigned long IpInUnknownProtos; unsigned long IpInDiscards; unsigned long IpInDelivers; unsigned long IpOutRequests; unsigned long IpOutDiscards; unsigned long IpOutNoRoutes; unsigned long IpReasmTimeout; unsigned long IpReasmReqds; unsigned long IpReasmOKs; unsigned long IpReasmFails; unsigned long IpFragOKs; unsigned long IpFragFails; unsigned long IpFragCreates; unsigned long __pad[0]; } ____cacheline_aligned; struct ipv6_mib { unsigned long Ip6InReceives; unsigned long Ip6InHdrErrors; unsigned long Ip6InTooBigErrors; unsigned long Ip6InNoRoutes; unsigned long Ip6InAddrErrors; unsigned long Ip6InUnknownProtos; unsigned long Ip6InTruncatedPkts; unsigned long Ip6InDiscards; unsigned long Ip6InDelivers; unsigned long Ip6OutForwDatagrams; unsigned long Ip6OutRequests; unsigned long Ip6OutDiscards; unsigned long Ip6OutNoRoutes; unsigned long Ip6ReasmTimeout; unsigned long Ip6ReasmReqds; unsigned long Ip6ReasmOKs; unsigned long Ip6ReasmFails; unsigned long Ip6FragOKs; unsigned long Ip6FragFails; unsigned long Ip6FragCreates; unsigned long Ip6InMcastPkts; unsigned long Ip6OutMcastPkts; unsigned long __pad[0]; } ____cacheline_aligned; struct icmp_mib { unsigned long IcmpInMsgs; unsigned long IcmpInErrors; unsigned long IcmpInDestUnreachs; unsigned long IcmpInTimeExcds; unsigned long IcmpInParmProbs; unsigned long IcmpInSrcQuenchs; unsigned long IcmpInRedirects; unsigned long IcmpInEchos; unsigned long IcmpInEchoReps; unsigned long IcmpInTimestamps; unsigned long IcmpInTimestampReps; unsigned long IcmpInAddrMasks; unsigned long IcmpInAddrMaskReps; unsigned long IcmpOutMsgs; unsigned long IcmpOutErrors; unsigned long IcmpOutDestUnreachs; unsigned long IcmpOutTimeExcds; unsigned long IcmpOutParmProbs; unsigned long IcmpOutSrcQuenchs; unsigned long IcmpOutRedirects; unsigned long IcmpOutEchos; unsigned long IcmpOutEchoReps; unsigned long IcmpOutTimestamps; unsigned long IcmpOutTimestampReps; unsigned long IcmpOutAddrMasks; unsigned long IcmpOutAddrMaskReps; unsigned long dummy; unsigned long __pad[0]; } ____cacheline_aligned; struct icmpv6_mib { unsigned long Icmp6InMsgs; unsigned long Icmp6InErrors; unsigned long Icmp6InDestUnreachs; unsigned long Icmp6InPktTooBigs; unsigned long Icmp6InTimeExcds; unsigned long Icmp6InParmProblems; unsigned long Icmp6InEchos; unsigned long Icmp6InEchoReplies; unsigned long Icmp6InGroupMembQueries; unsigned long Icmp6InGroupMembResponses; unsigned long Icmp6InGroupMembReductions; unsigned long Icmp6InRouterSolicits; unsigned long Icmp6InRouterAdvertisements; unsigned long Icmp6InNeighborSolicits; unsigned long Icmp6InNeighborAdvertisements; unsigned long Icmp6InRedirects; unsigned long Icmp6OutMsgs; unsigned long Icmp6OutDestUnreachs; unsigned long Icmp6OutPktTooBigs; unsigned long Icmp6OutTimeExcds; unsigned long Icmp6OutParmProblems; unsigned long Icmp6OutEchoReplies; unsigned long Icmp6OutRouterSolicits; unsigned long Icmp6OutNeighborSolicits; unsigned long Icmp6OutNeighborAdvertisements; unsigned long Icmp6OutRedirects; unsigned long Icmp6OutGroupMembResponses; unsigned long Icmp6OutGroupMembReductions; unsigned long __pad[0]; } ____cacheline_aligned; struct tcp_mib { unsigned long TcpRtoAlgorithm; unsigned long TcpRtoMin; unsigned long TcpRtoMax; unsigned long TcpMaxConn; unsigned long TcpActiveOpens; unsigned long TcpPassiveOpens; unsigned long TcpAttemptFails; unsigned long TcpEstabResets; unsigned long TcpCurrEstab; unsigned long TcpInSegs; unsigned long TcpOutSegs; unsigned long TcpRetransSegs; unsigned long TcpInErrs; unsigned long TcpOutRsts; unsigned long __pad[0]; } ____cacheline_aligned; struct udp_mib { unsigned long UdpInDatagrams; unsigned long UdpNoPorts; unsigned long UdpInErrors; unsigned long UdpOutDatagrams; unsigned long __pad[0]; } ____cacheline_aligned; struct linux_mib { unsigned long SyncookiesSent; unsigned long SyncookiesRecv; unsigned long SyncookiesFailed; unsigned long EmbryonicRsts; unsigned long PruneCalled; unsigned long RcvPruned; unsigned long OfoPruned; unsigned long OutOfWindowIcmps; unsigned long LockDroppedIcmps; unsigned long ArpFilter; unsigned long TimeWaited; unsigned long TimeWaitRecycled; unsigned long TimeWaitKilled; unsigned long PAWSPassiveRejected; unsigned long PAWSActiveRejected; unsigned long PAWSEstabRejected; unsigned long DelayedACKs; unsigned long DelayedACKLocked; unsigned long DelayedACKLost; unsigned long ListenOverflows; unsigned long ListenDrops; unsigned long TCPPrequeued; unsigned long TCPDirectCopyFromBacklog; unsigned long TCPDirectCopyFromPrequeue; unsigned long TCPPrequeueDropped; unsigned long TCPHPHits; unsigned long TCPHPHitsToUser; unsigned long TCPPureAcks; unsigned long TCPHPAcks; unsigned long TCPRenoRecovery; unsigned long TCPSackRecovery; unsigned long TCPSACKReneging; unsigned long TCPFACKReorder; unsigned long TCPSACKReorder; unsigned long TCPRenoReorder; unsigned long TCPTSReorder; unsigned long TCPFullUndo; unsigned long TCPPartialUndo; unsigned long TCPDSACKUndo; unsigned long TCPLossUndo; unsigned long TCPLoss; unsigned long TCPLostRetransmit; unsigned long TCPRenoFailures; unsigned long TCPSackFailures; unsigned long TCPLossFailures; unsigned long TCPFastRetrans; unsigned long TCPForwardRetrans; unsigned long TCPSlowStartRetrans; unsigned long TCPTimeouts; unsigned long TCPRenoRecoveryFail; unsigned long TCPSackRecoveryFail; unsigned long TCPSchedulerFailed; unsigned long TCPRcvCollapsed; unsigned long TCPDSACKOldSent; unsigned long TCPDSACKOfoSent; unsigned long TCPDSACKRecv; unsigned long TCPDSACKOfoRecv; unsigned long TCPAbortOnSyn; unsigned long TCPAbortOnData; unsigned long TCPAbortOnClose; unsigned long TCPAbortOnMemory; unsigned long TCPAbortOnTimeout; unsigned long TCPAbortOnLinger; unsigned long TCPAbortFailed; unsigned long TCPMemoryPressures; unsigned long __pad[0]; } ____cacheline_aligned; /* * FIXME: On x86 and some other CPUs the split into user and softirq parts is not needed because * addl $1,memory is atomic against interrupts (but atomic_inc would be overkill because of the lock * cycles). Wants new nonlocked_atomic_inc() primitives -AK */ #define SNMP_INC_STATS(mib, field) ((mib)[2*smp_processor_id()+!in_softirq()].field++) #define SNMP_INC_STATS_BH(mib, field) ((mib)[2*smp_processor_id()].field++) #define SNMP_INC_STATS_USER(mib, field) ((mib)[2*smp_processor_id()+1].field++) #endif |