#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 snmp_item {
- char *name;
- int offset;
-};
-
-#define SNMP_ITEM(mib,entry,procname) { \
- .name = procname, \
- .offset = offsetof(mib, entry), \
-}
-
-#define SNMP_ITEM_SENTINEL { \
- .name = NULL, \
- .offset = 0, \
-}
+#include <linux/snmp.h>
/*
- * RFC 1213: MIB-II
- * RFC 2011 (updates 1213): SNMPv2-MIB-IP
- * RFC 2863: Interfaces Group MIB
- * RFC 2465: IPv6 MIB: General Group
- * draft-ietf-ipv6-rfc2011-update-10.txt: MIB for IP: IP Statistics Tables
+ * Mibs are stored in array of unsigned long.
*/
-struct ipstats_mib
-{
- unsigned long InReceives;
- unsigned long InHdrErrors;
- unsigned long InTooBigErrors;
- unsigned long InNoRoutes;
- unsigned long InAddrErrors;
- unsigned long InUnknownProtos;
- unsigned long InTruncatedPkts;
- unsigned long InDiscards;
- unsigned long InDelivers;
- unsigned long OutForwDatagrams;
- unsigned long OutRequests;
- unsigned long OutDiscards;
- unsigned long OutNoRoutes;
- unsigned long ReasmTimeout;
- unsigned long ReasmReqds;
- unsigned long ReasmOKs;
- unsigned long ReasmFails;
- unsigned long FragOKs;
- unsigned long FragFails;
- unsigned long FragCreates;
- unsigned long InMcastPkts;
- unsigned long OutMcastPkts;
- unsigned long __pad[0];
-};
-
/*
- * RFC 1213: MIB-II ICMP Group
- * RFC 2011 (updates 1213): SNMPv2 MIB for IP: ICMP group
+ * struct snmp_mib{}
+ * - list of entries for particular API (such as /proc/net/snmp)
+ * - name of entries.
*/
-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];
+struct snmp_mib {
+ char *name;
+ int entry;
};
-/*
- * RFC 2466: ICMPv6-MIB
- */
-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;
+#define SNMP_MIB_ITEM(_name,_entry) { \
+ .name = _name, \
+ .entry = _entry, \
+}
- unsigned long Icmp6OutDestUnreachs;
- unsigned long Icmp6OutPktTooBigs;
- unsigned long Icmp6OutTimeExcds;
- unsigned long Icmp6OutParmProblems;
+#define SNMP_MIB_SENTINEL { \
+ .name = NULL, \
+ .entry = 0, \
+}
- 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];
-};
-
-/*
- * RFC 1213: MIB-II TCP group
- * RFC 2012 (updates 1213): SNMPv2-MIB-TCP
- */
-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];
-};
-
/*
- * RFC 1213: MIB-II UDP group
- * RFC 2013 (updates 1213): SNMPv2-MIB-UDP
+ * 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!
*/
-struct udp_mib
-{
- unsigned long UdpInDatagrams;
- unsigned long UdpNoPorts;
- unsigned long UdpInErrors;
- unsigned long UdpOutDatagrams;
- unsigned long __pad[0];
-};
-/* draft-ietf-sigtran-sctp-mib-07.txt */
-struct sctp_mib
-{
- unsigned long SctpCurrEstab;
- unsigned long SctpActiveEstabs;
- unsigned long SctpPassiveEstabs;
- unsigned long SctpAborteds;
- unsigned long SctpShutdowns;
- unsigned long SctpOutOfBlues;
- unsigned long SctpChecksumErrors;
- unsigned long SctpOutCtrlChunks;
- unsigned long SctpOutOrderChunks;
- unsigned long SctpOutUnorderChunks;
- unsigned long SctpInCtrlChunks;
- unsigned long SctpInOrderChunks;
- unsigned long SctpInUnorderChunks;
- unsigned long SctpFragUsrMsgs;
- unsigned long SctpReasmUsrMsgs;
- unsigned long SctpOutSCTPPacks;
- unsigned long SctpInSCTPPacks;
- unsigned long SctpRtoAlgorithm;
- unsigned long SctpRtoMin;
- unsigned long SctpRtoMax;
- unsigned long SctpRtoInitial;
- unsigned long SctpValCookieLife;
- unsigned long SctpMaxInitRetr;
- unsigned long __pad[0];
-};
+/*
+ * 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 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];
+#define __SNMP_MIB_ALIGN__ ____cacheline_aligned
+
+/* IPstats */
+#define IPSTATS_MIB_MAX __IPSTATS_MIB_MAX
+struct ipstats_mib {
+ unsigned long mibs[IPSTATS_MIB_MAX];
+} __SNMP_MIB_ALIGN__;
+
+/* ICMP */
+#define ICMP_MIB_DUMMY __ICMP_MIB_MAX
+#define ICMP_MIB_MAX (__ICMP_MIB_MAX + 1)
+
+struct icmp_mib {
+ unsigned long mibs[ICMP_MIB_MAX];
+} __SNMP_MIB_ALIGN__;
+
+/* ICMP6 (IPv6-ICMP) */
+#define ICMP6_MIB_MAX __ICMP6_MIB_MAX
+struct icmpv6_mib {
+ unsigned long mibs[ICMP6_MIB_MAX];
+} __SNMP_MIB_ALIGN__;
+
+/* TCP */
+#define TCP_MIB_MAX __TCP_MIB_MAX
+struct tcp_mib {
+ unsigned long mibs[TCP_MIB_MAX];
+} __SNMP_MIB_ALIGN__;
+
+/* UDP */
+#define UDP_MIB_MAX __UDP_MIB_MAX
+struct udp_mib {
+ unsigned long mibs[UDP_MIB_MAX];
+} __SNMP_MIB_ALIGN__;
+
+/* SCTP */
+#define SCTP_MIB_MAX __SCTP_MIB_MAX
+struct sctp_mib {
+ unsigned long mibs[SCTP_MIB_MAX];
+} __SNMP_MIB_ALIGN__;
+
+/* Linux */
+#define LINUX_MIB_MAX __LINUX_MIB_MAX
+struct linux_mib {
+ unsigned long mibs[LINUX_MIB_MAX];
};
/*
- * 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
+ * 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 DEFINE_SNMP_STAT(type, name) \
__typeof__(type) *name[2]
#define SNMP_STAT_USRPTR(name) (name[1])
#define SNMP_INC_STATS_BH(mib, field) \
- (per_cpu_ptr(mib[0], smp_processor_id())->field++)
+ (per_cpu_ptr(mib[0], smp_processor_id())->mibs[field]++)
#define SNMP_INC_STATS_OFFSET_BH(mib, field, offset) \
- ((*((&per_cpu_ptr(mib[0], smp_processor_id())->field) + (offset)))++)
+ (per_cpu_ptr(mib[0], smp_processor_id())->mibs[field + (offset)]++)
#define SNMP_INC_STATS_USER(mib, field) \
- (per_cpu_ptr(mib[1], smp_processor_id())->field++)
+ (per_cpu_ptr(mib[1], smp_processor_id())->mibs[field]++)
#define SNMP_INC_STATS(mib, field) \
- (per_cpu_ptr(mib[!in_softirq()], smp_processor_id())->field++)
+ (per_cpu_ptr(mib[!in_softirq()], smp_processor_id())->mibs[field]++)
#define SNMP_DEC_STATS(mib, field) \
- (per_cpu_ptr(mib[!in_softirq()], smp_processor_id())->field--)
+ (per_cpu_ptr(mib[!in_softirq()], smp_processor_id())->mibs[field]--)
#define SNMP_ADD_STATS_BH(mib, field, addend) \
- (per_cpu_ptr(mib[0], smp_processor_id())->field += addend)
+ (per_cpu_ptr(mib[0], smp_processor_id())->mibs[field] += addend)
#define SNMP_ADD_STATS_USER(mib, field, addend) \
- (per_cpu_ptr(mib[1], smp_processor_id())->field += addend)
-
+ (per_cpu_ptr(mib[1], smp_processor_id())->mibs[field] += addend)
+
#endif
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