Release 4.11 net/ipv4/proc.c

/*
 * INET         An implementation of the TCP/IP protocol suite for the LINUX
 *              operating system.  INET is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              This file implements the various access functions for the
 *              PROC file system.  It is mainly used for debugging and
 *              statistics.
 *
 * Authors:     Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *              Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
 *              Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
 *              Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
 *
 * Fixes:
 *              Alan Cox        :       UDP sockets show the rxqueue/txqueue
 *                                      using hint flag for the netinfo.
 *      Pauline Middelink       :       identd support
 *              Alan Cox        :       Make /proc safer.
 *      Erik Schoenfelder       :       /proc/net/snmp
 *              Alan Cox        :       Handle dead sockets properly.
 *      Gerhard Koerting        :       Show both timers
 *              Alan Cox        :       Allow inode to be NULL (kernel socket)
 *      Andi Kleen              :       Add support for open_requests and
 *                                      split functions for more readibility.
 *      Andi Kleen              :       Add support for /proc/net/netstat
 *      Arnaldo C. Melo         :       Convert to seq_file
 *
 *              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.
 */
#include <linux/types.h>
#include <net/net_namespace.h>
#include <net/icmp.h>
#include <net/protocol.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/udplite.h>
#include <linux/bottom_half.h>
#include <linux/inetdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/export.h>
#include <net/sock.h>
#include <net/raw.h>


#define TCPUDP_MIB_MAX max_t(u32, UDP_MIB_MAX, TCP_MIB_MAX)

/*
 *      Report socket allocation statistics [mea@utu.fi]
 */


static int sockstat_seq_show(struct seq_file *seq, void *v)
{
	struct net *net = seq->private;
	unsigned int frag_mem;
	int orphans, sockets;

	orphans = percpu_counter_sum_positive(&tcp_orphan_count);
	sockets = proto_sockets_allocated_sum_positive(&tcp_prot);

	socket_seq_show(seq);
	seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
		   sock_prot_inuse_get(net, &tcp_prot), orphans,
		   atomic_read(&net->ipv4.tcp_death_row.tw_count), sockets,
		   proto_memory_allocated(&tcp_prot));
	seq_printf(seq, "UDP: inuse %d mem %ld\n",
		   sock_prot_inuse_get(net, &udp_prot),
		   proto_memory_allocated(&udp_prot));
	seq_printf(seq, "UDPLITE: inuse %d\n",
		   sock_prot_inuse_get(net, &udplite_prot));
	seq_printf(seq, "RAW: inuse %d\n",
		   sock_prot_inuse_get(net, &raw_prot));
	frag_mem = ip_frag_mem(net);
	seq_printf(seq,  "FRAG: inuse %u memory %u\n", !!frag_mem, frag_mem);
	return 0;
}

Contributors
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Linus Torvalds (pre-git)
51
30.91%
6
30.00%
Arnaldo Carvalho de Melo
21
12.73%
2
10.00%
Pavel Emelyanov
21
12.73%
2
10.00%
Herbert Xu
19
11.52%
1
5.00%
Florian Westphal
16
9.70%
1
5.00%
Gerrit Renker
11
6.67%
1
5.00%
Eric Dumazet
10
6.06%
3
15.00%
Glauber de Oliveira Costa
6
3.64%
1
5.00%
Hideo Aoki
4
2.42%
1
5.00%
Haishuang Yan
4
2.42%
1
5.00%
Thomas Gleixner
2
1.21%
1
5.00%
Total
165
100.00%
20
100.00%



static int sockstat_seq_open(struct inode *inode, struct file *file)
{
	return single_open_net(inode, file, sockstat_seq_show);
}

Contributors
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Tokens
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Arnaldo Carvalho de Melo
18
69.23%
1
33.33%
Pavel Emelyanov
8
30.77%
2
66.67%
Total
26
100.00%
3
100.00%


static const struct file_operations sockstat_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = sockstat_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release_net,
};

/* snmp items */

static const struct snmp_mib snmp4_ipstats_list[] = {
	SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
	SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
	SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
	SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
	SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
	SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
	SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
	SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
	SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
	SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
	SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
	SNMP_MIB_SENTINEL
};

/* Following items are displayed in /proc/net/netstat */

static const struct snmp_mib snmp4_ipextstats_list[] = {
	SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
	SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
	SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
	SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
	SNMP_MIB_ITEM("InOctets", IPSTATS_MIB_INOCTETS),
	SNMP_MIB_ITEM("OutOctets", IPSTATS_MIB_OUTOCTETS),
	SNMP_MIB_ITEM("InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
	SNMP_MIB_ITEM("OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
	SNMP_MIB_ITEM("InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
	SNMP_MIB_ITEM("OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
	/* Non RFC4293 fields */
	SNMP_MIB_ITEM("InCsumErrors", IPSTATS_MIB_CSUMERRORS),
	SNMP_MIB_ITEM("InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
	SNMP_MIB_ITEM("InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
	SNMP_MIB_ITEM("InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
	SNMP_MIB_ITEM("InCEPkts", IPSTATS_MIB_CEPKTS),
	SNMP_MIB_SENTINEL
};

static const struct {
	
const char *name;
	
int index;
} 
icmpmibmap[] = {
	{ "DestUnreachs", ICMP_DEST_UNREACH },
	{ "TimeExcds", ICMP_TIME_EXCEEDED },
	{ "ParmProbs", ICMP_PARAMETERPROB },
	{ "SrcQuenchs", ICMP_SOURCE_QUENCH },
	{ "Redirects", ICMP_REDIRECT },
	{ "Echos", ICMP_ECHO },
	{ "EchoReps", ICMP_ECHOREPLY },
	{ "Timestamps", ICMP_TIMESTAMP },
	{ "TimestampReps", ICMP_TIMESTAMPREPLY },
	{ "AddrMasks", ICMP_ADDRESS },
	{ "AddrMaskReps", ICMP_ADDRESSREPLY },
	{ NULL, 0 }
};



static const struct snmp_mib snmp4_tcp_list[] = {
	SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
	SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
	SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
	SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
	SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
	SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
	SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
	SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
	SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
	SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
	SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
	SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
	SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
	SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
	SNMP_MIB_ITEM("InCsumErrors", TCP_MIB_CSUMERRORS),
	SNMP_MIB_SENTINEL
};


static const struct snmp_mib snmp4_udp_list[] = {
	SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
	SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
	SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
	SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
	SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
	SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
	SNMP_MIB_ITEM("InCsumErrors", UDP_MIB_CSUMERRORS),
	SNMP_MIB_ITEM("IgnoredMulti", UDP_MIB_IGNOREDMULTI),
	SNMP_MIB_SENTINEL
};


static const struct snmp_mib snmp4_net_list[] = {
	SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
	SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
	SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
	SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
	SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
	SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
	SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
	SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
	SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
	SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
	SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
	SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
	SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
	SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
	SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
	SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
	SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
	SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
	SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
	SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
	SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
	SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
	SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
	SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
	SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
	SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
	SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
	SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
	SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
	SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
	SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
	SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
	SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
	SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
	SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
	SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
	SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
	SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
	SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
	SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
	SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
	SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
	SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
	SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
	SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
	SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
	SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
	SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
	SNMP_MIB_ITEM("TCPLossProbes", LINUX_MIB_TCPLOSSPROBES),
	SNMP_MIB_ITEM("TCPLossProbeRecovery", LINUX_MIB_TCPLOSSPROBERECOVERY),
	SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
	SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
	SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
	SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
	SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
	SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
	SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
	SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
	SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
	SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
	SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
	SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
	SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
	SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
	SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
	SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
	SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
	SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
	SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
	SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
	SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
	SNMP_MIB_ITEM("TCPMD5Failure", LINUX_MIB_TCPMD5FAILURE),
	SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
	SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
	SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
	SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
	SNMP_MIB_ITEM("PFMemallocDrop", LINUX_MIB_PFMEMALLOCDROP),
	SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
	SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
	SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
	SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
	SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES),
	SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP),
	SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL),
	SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE),
	SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE),
	SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP),
	SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE),
	SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK),
	SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE),
	SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE),
	SNMP_MIB_ITEM("TCPFastOpenActiveFail", LINUX_MIB_TCPFASTOPENACTIVEFAIL),
	SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE),
	SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL),
	SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW),
	SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD),
	SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES),
	SNMP_MIB_ITEM("BusyPollRxPackets", LINUX_MIB_BUSYPOLLRXPACKETS),
	SNMP_MIB_ITEM("TCPAutoCorking", LINUX_MIB_TCPAUTOCORKING),
	SNMP_MIB_ITEM("TCPFromZeroWindowAdv", LINUX_MIB_TCPFROMZEROWINDOWADV),
	SNMP_MIB_ITEM("TCPToZeroWindowAdv", LINUX_MIB_TCPTOZEROWINDOWADV),
	SNMP_MIB_ITEM("TCPWantZeroWindowAdv", LINUX_MIB_TCPWANTZEROWINDOWADV),
	SNMP_MIB_ITEM("TCPSynRetrans", LINUX_MIB_TCPSYNRETRANS),
	SNMP_MIB_ITEM("TCPOrigDataSent", LINUX_MIB_TCPORIGDATASENT),
	SNMP_MIB_ITEM("TCPHystartTrainDetect", LINUX_MIB_TCPHYSTARTTRAINDETECT),
	SNMP_MIB_ITEM("TCPHystartTrainCwnd", LINUX_MIB_TCPHYSTARTTRAINCWND),
	SNMP_MIB_ITEM("TCPHystartDelayDetect", LINUX_MIB_TCPHYSTARTDELAYDETECT),
	SNMP_MIB_ITEM("TCPHystartDelayCwnd", LINUX_MIB_TCPHYSTARTDELAYCWND),
	SNMP_MIB_ITEM("TCPACKSkippedSynRecv", LINUX_MIB_TCPACKSKIPPEDSYNRECV),
	SNMP_MIB_ITEM("TCPACKSkippedPAWS", LINUX_MIB_TCPACKSKIPPEDPAWS),
	SNMP_MIB_ITEM("TCPACKSkippedSeq", LINUX_MIB_TCPACKSKIPPEDSEQ),
	SNMP_MIB_ITEM("TCPACKSkippedFinWait2", LINUX_MIB_TCPACKSKIPPEDFINWAIT2),
	SNMP_MIB_ITEM("TCPACKSkippedTimeWait", LINUX_MIB_TCPACKSKIPPEDTIMEWAIT),
	SNMP_MIB_ITEM("TCPACKSkippedChallenge", LINUX_MIB_TCPACKSKIPPEDCHALLENGE),
	SNMP_MIB_ITEM("TCPWinProbe", LINUX_MIB_TCPWINPROBE),
	SNMP_MIB_ITEM("TCPKeepAlive", LINUX_MIB_TCPKEEPALIVE),
	SNMP_MIB_ITEM("TCPMTUPFail", LINUX_MIB_TCPMTUPFAIL),
	SNMP_MIB_ITEM("TCPMTUPSuccess", LINUX_MIB_TCPMTUPSUCCESS),
	SNMP_MIB_SENTINEL
};



static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
			     unsigned short *type, int count)
{
	int j;

	if (count) {
		seq_puts(seq, "\nIcmpMsg:");
		for (j = 0; j < count; ++j)
			seq_printf(seq, " %sType%u",
				type[j] & 0x100 ? "Out" : "In",
				type[j] & 0xff);
		seq_puts(seq, "\nIcmpMsg:");
		for (j = 0; j < count; ++j)
			seq_printf(seq, " %lu", vals[j]);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David L Stevens
41
37.27%
1
12.50%
Eric Dumazet
28
25.45%
1
12.50%
Linus Torvalds (pre-git)
24
21.82%
2
25.00%
Hideaki Yoshifuji / 吉藤英明
8
7.27%
1
12.50%
Arnaldo Carvalho de Melo
6
5.45%
1
12.50%
Fabian Frederick
2
1.82%
1
12.50%
Pavel Emelyanov
1
0.91%
1
12.50%
Total
110
100.00%
8
100.00%



static void icmpmsg_put(struct seq_file *seq)
{

#define PERLINE	16

	int i, count;
	unsigned short type[PERLINE];
	unsigned long vals[PERLINE], val;
	struct net *net = seq->private;

	count = 0;
	for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
		val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]);
		if (val) {
			type[count] = i;
			vals[count++] = val;
		}
		if (count == PERLINE) {
			icmpmsg_put_line(seq, vals, type, count);
			count = 0;
		}
	}
	icmpmsg_put_line(seq, vals, type, count);


#undef PERLINE
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Dumazet
107
76.98%
2
33.33%
David L Stevens
27
19.42%
1
16.67%
Pavel Emelyanov
4
2.88%
2
33.33%
Hideaki Yoshifuji / 吉藤英明
1
0.72%
1
16.67%
Total
139
100.00%
6
100.00%



static void icmp_put(struct seq_file *seq)
{
	int i;
	struct net *net = seq->private;
	atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs;

	seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors");
	for (i = 0; icmpmibmap[i].name; i++)
		seq_printf(seq, " In%s", icmpmibmap[i].name);
	seq_puts(seq, " OutMsgs OutErrors");
	for (i = 0; icmpmibmap[i].name; i++)
		seq_printf(seq, " Out%s", icmpmibmap[i].name);
	seq_printf(seq, "\nIcmp: %lu %lu %lu",
		snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INMSGS),
		snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INERRORS),
		snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS));
	for (i = 0; icmpmibmap[i].name; i++)
		seq_printf(seq, " %lu",
			   atomic_long_read(ptr + icmpmibmap[i].index));
	seq_printf(seq, " %lu %lu",
		snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
		snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
	for (i = 0; icmpmibmap[i].name; i++)
		seq_printf(seq, " %lu",
			   atomic_long_read(ptr + (icmpmibmap[i].index | 0x100)));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David L Stevens
147
58.33%
1
9.09%
Eric Dumazet
32
12.70%
2
18.18%
Pavel Emelyanov
25
9.92%
2
18.18%
Linus Torvalds (pre-git)
21
8.33%
2
18.18%
Hideaki Yoshifuji / 吉藤英明
20
7.94%
1
9.09%
Arnaldo Carvalho de Melo
4
1.59%
1
9.09%
Mitsuru Chinen
2
0.79%
1
9.09%
Fabian Frederick
1
0.40%
1
9.09%
Total
252
100.00%
11
100.00%

/*
 *      Called from the PROCfs module. This outputs /proc/net/snmp.
 */


static int snmp_seq_show_ipstats(struct seq_file *seq, void *v)
{
	struct net *net = seq->private;
	u64 buff64[IPSTATS_MIB_MAX];
	int i;

	memset(buff64, 0, IPSTATS_MIB_MAX * sizeof(u64));

	seq_puts(seq, "Ip: Forwarding DefaultTTL");
	for (i = 0; snmp4_ipstats_list[i].name; i++)
		seq_printf(seq, " %s", snmp4_ipstats_list[i].name);

	seq_printf(seq, "\nIp: %d %d",
		   IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
		   net->ipv4.sysctl_ip_default_ttl);

	BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
	snmp_get_cpu_field64_batch(buff64, snmp4_ipstats_list,
				   net->mib.ip_statistics,
				   offsetof(struct ipstats_mib, syncp));
	for (i = 0; snmp4_ipstats_list[i].name; i++)
		seq_printf(seq, " %llu", buff64[i]);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David L Stevens
89
51.45%
1
11.11%
Jia He
50
28.90%
1
11.11%
Eric Dumazet
14
8.09%
1
11.11%
Pavel Emelyanov
11
6.36%
3
33.33%
Nikolay Borisov
4
2.31%
1
11.11%
Hideaki Yoshifuji / 吉藤英明
3
1.73%
1
11.11%
Linus Torvalds (pre-git)
2
1.16%
1
11.11%
Total
173
100.00%
9
100.00%



static int snmp_seq_show_tcp_udp(struct seq_file *seq, void *v)
{
	unsigned long buff[TCPUDP_MIB_MAX];
	struct net *net = seq->private;
	int i;

	memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));

	seq_puts(seq, "\nTcp:");
	for (i = 0; snmp4_tcp_list[i].name; i++)
		seq_printf(seq, " %s", snmp4_tcp_list[i].name);

	seq_puts(seq, "\nTcp:");
	snmp_get_cpu_field_batch(buff, snmp4_tcp_list,
				 net->mib.tcp_statistics);
	for (i = 0; snmp4_tcp_list[i].name; i++) {
		/* MaxConn field is signed, RFC 2012 */
		if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
			seq_printf(seq, " %ld", buff[i]);
		else
			seq_printf(seq, " %lu", buff[i]);
	}

	memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));

	snmp_get_cpu_field_batch(buff, snmp4_udp_list,
				 net->mib.udp_statistics);
	seq_puts(seq, "\nUdp:");
	for (i = 0; snmp4_udp_list[i].name; i++)
		seq_printf(seq, " %s", snmp4_udp_list[i].name);
	seq_puts(seq, "\nUdp:");
	for (i = 0; snmp4_udp_list[i].name; i++)
		seq_printf(seq, " %lu", buff[i]);

	memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));

	/* the UDP and UDP-Lite MIBs are the same */
	seq_puts(seq, "\nUdpLite:");
	snmp_get_cpu_field_batch(buff, snmp4_udp_list,
				 net->mib.udplite_statistics);
	for (i = 0; snmp4_udp_list[i].name; i++)
		seq_printf(seq, " %s", snmp4_udp_list[i].name);
	seq_puts(seq, "\nUdpLite:");
	for (i = 0; snmp4_udp_list[i].name; i++)
		seq_printf(seq, " %lu", buff[i]);

	seq_putc(seq, '\n');
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jia He
115
30.91%
1
8.33%
Hideaki Yoshifuji / 吉藤英明
97
26.08%
2
16.67%
Gerrit Renker
72
19.35%
1
8.33%
Linus Torvalds (pre-git)
53
14.25%
3
25.00%
Nivedita Singhvi
16
4.30%
1
8.33%
Arnaldo Carvalho de Melo
11
2.96%
1
8.33%
David L Stevens
4
1.08%
1
8.33%
Pavel Emelyanov
4
1.08%
2
16.67%
Total
372
100.00%
12
100.00%



static int snmp_seq_show(struct seq_file *seq, void *v)
{
	snmp_seq_show_ipstats(seq, v);

	icmp_put(seq);	/* RFC 2011 compatibility */
	icmpmsg_put(seq);

	snmp_seq_show_tcp_udp(seq, v);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jia He
43
100.00%
1
100.00%
Total
43
100.00%
1
100.00%



static int snmp_seq_open(struct inode *inode, struct file *file)
{
	return single_open_net(inode, file, snmp_seq_show);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Arnaldo Carvalho de Melo
18
69.23%
1
33.33%
Pavel Emelyanov
8
30.77%
2
66.67%
Total
26
100.00%
3
100.00%


static const struct file_operations snmp_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = snmp_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release_net,
};



/*
 *      Output /proc/net/netstat
 */


static int netstat_seq_show(struct seq_file *seq, void *v)
{
	int i;
	struct net *net = seq->private;

	seq_puts(seq, "TcpExt:");
	for (i = 0; snmp4_net_list[i].name; i++)
		seq_printf(seq, " %s", snmp4_net_list[i].name);

	seq_puts(seq, "\nTcpExt:");
	for (i = 0; snmp4_net_list[i].name; i++)
		seq_printf(seq, " %lu",
			   snmp_fold_field(net->mib.net_statistics,
					   snmp4_net_list[i].entry));

	seq_puts(seq, "\nIpExt:");
	for (i = 0; snmp4_ipextstats_list[i].name; i++)
		seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);

	seq_puts(seq, "\nIpExt:");
	for (i = 0; snmp4_ipextstats_list[i].name; i++)
		seq_printf(seq, " %llu",
			   snmp_fold_field64(net->mib.ip_statistics,
					     snmp4_ipextstats_list[i].entry,
					     offsetof(struct ipstats_mib, syncp)));

	seq_putc(seq, '\n');
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Mitsuru Chinen
77
36.49%
1
7.69%
Hideaki Yoshifuji / 吉藤英明
48
22.75%
1
7.69%
Linus Torvalds (pre-git)
43
20.38%
4
30.77%
Pavel Emelyanov
17
8.06%
3
23.08%
Arnaldo Carvalho de Melo
14
6.64%
1
7.69%
Eric Dumazet
10
4.74%
1
7.69%
Cal Peake
1
0.47%
1
7.69%
Herbert Xu
1
0.47%
1
7.69%
Total
211
100.00%
13
100.00%



static int netstat_seq_open(struct inode *inode, struct file *file)
{
	return single_open_net(inode, file, netstat_seq_show);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Arnaldo Carvalho de Melo
18
69.23%
1
33.33%
Pavel Emelyanov
8
30.77%
2
66.67%
Total
26
100.00%
3
100.00%


static const struct file_operations netstat_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = netstat_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release_net,
};



static __net_init int ip_proc_init_net(struct net *net)
{
	if (!proc_create("sockstat", S_IRUGO, net->proc_net,
			 &sockstat_seq_fops))
		goto out_sockstat;
	if (!proc_create("netstat", S_IRUGO, net->proc_net, &netstat_seq_fops))
		goto out_netstat;
	if (!proc_create("snmp", S_IRUGO, net->proc_net, &snmp_seq_fops))
		goto out_snmp;

	return 0;

out_snmp:
	remove_proc_entry("netstat", net->proc_net);
out_netstat:
	remove_proc_entry("sockstat", net->proc_net);
out_sockstat:
	return -ENOMEM;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
78
75.73%
4
66.67%
Gao Feng
25
24.27%
2
33.33%
Total
103
100.00%
6
100.00%



static __net_exit void ip_proc_exit_net(struct net *net)
{
	remove_proc_entry("snmp", net->proc_net);
	remove_proc_entry("netstat", net->proc_net);
	remove_proc_entry("sockstat", net->proc_net);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
24
61.54%
3
75.00%
Gao Feng
15
38.46%
1
25.00%
Total
39
100.00%
4
100.00%


static __net_initdata struct pernet_operations ip_proc_ops = {
	.init = ip_proc_init_net,
	.exit = ip_proc_exit_net,
};



int __init ip_misc_proc_init(void)
{
	return register_pernet_subsys(&ip_proc_ops);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Arnaldo Carvalho de Melo
11
73.33%
1
25.00%
Pavel Emelyanov
3
20.00%
2
50.00%
Eric W. Biedermann
1
6.67%
1
25.00%
Total
15
100.00%
4
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Hideaki Yoshifuji / 吉藤英明
940
29.01%
4
3.85%
Eric Dumazet
413
12.75%
23
22.12%
David L Stevens
373
11.51%
1
0.96%
Pavel Emelyanov
233
7.19%
15
14.42%
Linus Torvalds (pre-git)
215
6.64%
13
12.50%
Jia He
212
6.54%
1
0.96%
Arnaldo Carvalho de Melo
210
6.48%
6
5.77%
Mitsuru Chinen
132
4.07%
2
1.92%
Gerrit Renker
86
2.65%
1
0.96%
Ilpo Järvinen
49
1.51%
3
2.88%
Neil Horman
44
1.36%
1
0.96%
Neal Cardwell
42
1.30%
1
0.96%
Gao Feng
40
1.23%
2
1.92%
Florian Westphal
37
1.14%
2
1.92%
Jerry Chu
28
0.86%
1
0.96%
Yuchung Cheng
28
0.86%
2
1.92%
Herbert Xu
23
0.71%
2
1.92%
Rick Jones
21
0.65%
2
1.92%
Nivedita Singhvi
16
0.49%
1
0.96%
David S. Miller
14
0.43%
1
0.96%
Martin J. Bligh
14
0.43%
1
0.96%
Nandita Dukkipati
14
0.43%
2
1.92%
Tom Herbert
7
0.22%
1
0.96%
Arjan van de Ven
7
0.22%
2
1.92%
Eliezer Tamir
7
0.22%
2
1.92%
Glauber de Oliveira Costa
6
0.19%
1
0.96%
Nikolay Borisov
4
0.12%
1
0.96%
Haishuang Yan
4
0.12%
1
0.96%
Eric W. Biedermann
4
0.12%
1
0.96%
Hideo Aoki
4
0.12%
1
0.96%
Fabian Frederick
3
0.09%
1
0.96%
Paul Gortmaker
3
0.09%
1
0.96%
Thomas Gleixner
2
0.06%
1
0.96%
Alexey Dobriyan
2
0.06%
1
0.96%
Adrian Bunk
1
0.03%
1
0.96%
Stephen Hemminger
1
0.03%
1
0.96%
Cal Peake
1
0.03%
1
0.96%
Total
3240
100.00%
104
100.00%
Directory: net/ipv4

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