[net-next-2.6.git] / 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.
 *
 * Version:	$Id: proc.c,v 1.45 2001/05/16 16:45:35 davem Exp $
 *
 * 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/inetdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/sock.h>
#include <net/raw.h>

static int fold_prot_inuse(struct proto *proto)
{
	int res = 0;
	int cpu;

	for_each_possible_cpu(cpu)
		res += proto->stats[cpu].inuse;

	return res;
}

/*
 *	Report socket allocation statistics [mea@utu.fi]
 */
static int sockstat_seq_show(struct seq_file *seq, void *v)
{
	socket_seq_show(seq);
	seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
		   fold_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
		   tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
		   atomic_read(&tcp_memory_allocated));
	seq_printf(seq, "UDP: inuse %d\n", fold_prot_inuse(&udp_prot));
	seq_printf(seq, "UDPLITE: inuse %d\n", fold_prot_inuse(&udplite_prot));
	seq_printf(seq, "RAW: inuse %d\n", fold_prot_inuse(&raw_prot));
	seq_printf(seq,  "FRAG: inuse %d memory %d\n", ip_frag_nqueues,
		   atomic_read(&ip_frag_mem));
	return 0;
}

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

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

/* snmp items */
static const struct snmp_mib snmp4_ipstats_list[] = {
	SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
	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_OUTREQUESTS),
	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 RFC4293 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_SENTINEL
};

static const struct snmp_mib snmp4_icmp_list[] = {
	SNMP_MIB_ITEM("InMsgs", ICMP_MIB_INMSGS),
	SNMP_MIB_ITEM("InErrors", ICMP_MIB_INERRORS),
	SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS),
	SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS),
	SNMP_MIB_SENTINEL
};

static struct {
	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_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_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("TCPLoss", LINUX_MIB_TCPLOSS),
	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("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("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
	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_SENTINEL
};

static void icmpmsg_put(struct seq_file *seq)
{
#define PERLINE	16

	int j, i, count;
	static int out[PERLINE];

	count = 0;
	for (i = 0; i < ICMPMSG_MIB_MAX; i++) {

		if (snmp_fold_field((void **) icmpmsg_statistics, i))
			out[count++] = i;
		if (count < PERLINE)
			continue;

		seq_printf(seq, "\nIcmpMsg:");
		for (j = 0; j < PERLINE; ++j)
			seq_printf(seq, " %sType%u", i & 0x100 ? "Out" : "In",
					i & 0xff);
		seq_printf(seq, "\nIcmpMsg: ");
		for (j = 0; j < PERLINE; ++j)
			seq_printf(seq, " %lu",
				snmp_fold_field((void **) icmpmsg_statistics,
				out[j]));
		seq_putc(seq, '\n');
	}
	if (count) {
		seq_printf(seq, "\nIcmpMsg:");
		for (j = 0; j < count; ++j)
			seq_printf(seq, " %sType%u", out[j] & 0x100 ? "Out" :
				"In", out[j] & 0xff);
		seq_printf(seq, "\nIcmpMsg:");
		for (j = 0; j < count; ++j)
			seq_printf(seq, " %lu", snmp_fold_field((void **)
				icmpmsg_statistics, out[j]));
	}

#undef PERLINE
}

static void icmp_put(struct seq_file *seq)
{
	int i;

	seq_puts(seq, "\nIcmp: InMsgs InErrors");
	for (i=0; icmpmibmap[i].name != NULL; i++)
		seq_printf(seq, " In%s", icmpmibmap[i].name);
	seq_printf(seq, " OutMsgs OutErrors");
	for (i=0; icmpmibmap[i].name != NULL; i++)
		seq_printf(seq, " Out%s", icmpmibmap[i].name);
	seq_printf(seq, "\nIcmp: %lu %lu",
		snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INMSGS),
		snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INERRORS));
	for (i=0; icmpmibmap[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			snmp_fold_field((void **) icmpmsg_statistics,
				icmpmibmap[i].index));
	seq_printf(seq, " %lu %lu",
		snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTMSGS),
		snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTERRORS));
	for (i=0; icmpmibmap[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			snmp_fold_field((void **) icmpmsg_statistics,
				icmpmibmap[i].index));
}

/*
 *	Called from the PROCfs module. This outputs /proc/net/snmp.
 */
static int snmp_seq_show(struct seq_file *seq, void *v)
{
	int i;

	seq_puts(seq, "Ip: Forwarding DefaultTTL");

	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
		seq_printf(seq, " %s", snmp4_ipstats_list[i].name);

	seq_printf(seq, "\nIp: %d %d",
		   IPV4_DEVCONF_ALL(FORWARDING) ? 1 : 2, sysctl_ip_default_ttl);

	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			   snmp_fold_field((void **)ip_statistics,
					   snmp4_ipstats_list[i].entry));

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

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

	seq_puts(seq, "\nTcp:");
	for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
		/* MaxConn field is signed, RFC 2012 */
		if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
			seq_printf(seq, " %ld",
				   snmp_fold_field((void **)tcp_statistics,
						   snmp4_tcp_list[i].entry));
		else
			seq_printf(seq, " %lu",
				   snmp_fold_field((void **)tcp_statistics,
						   snmp4_tcp_list[i].entry));
	}

	seq_puts(seq, "\nUdp:");
	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
		seq_printf(seq, " %s", snmp4_udp_list[i].name);

	seq_puts(seq, "\nUdp:");
	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			   snmp_fold_field((void **)udp_statistics,
					   snmp4_udp_list[i].entry));

	/* the UDP and UDP-Lite MIBs are the same */
	seq_puts(seq, "\nUdpLite:");
	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
		seq_printf(seq, " %s", snmp4_udp_list[i].name);

	seq_puts(seq, "\nUdpLite:");
	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			   snmp_fold_field((void **)udplite_statistics,
					   snmp4_udp_list[i].entry));

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

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

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


/*
 *	Output /proc/net/netstat
 */
static int netstat_seq_show(struct seq_file *seq, void *v)
{
	int i;

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

	seq_puts(seq, "\nTcpExt:");
	for (i = 0; snmp4_net_list[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			   snmp_fold_field((void **)net_statistics,
					   snmp4_net_list[i].entry));

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

	seq_puts(seq, "\nIpExt:");
	for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			   snmp_fold_field((void **)ip_statistics,
					   snmp4_ipextstats_list[i].entry));

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

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

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

int __init ip_misc_proc_init(void)
{
	int rc = 0;

	if (!proc_net_fops_create(&init_net, "netstat", S_IRUGO, &netstat_seq_fops))
		goto out_netstat;

	if (!proc_net_fops_create(&init_net, "snmp", S_IRUGO, &snmp_seq_fops))
		goto out_snmp;

	if (!proc_net_fops_create(&init_net, "sockstat", S_IRUGO, &sockstat_seq_fops))
		goto out_sockstat;
out:
	return rc;
out_sockstat:
	proc_net_remove(&init_net, "snmp");
out_snmp:
	proc_net_remove(&init_net, "netstat");
out_netstat:
	rc = -ENOMEM;
	goto out;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* INET An implementation of the TCP/IP protocol suite for the LINUX
	3	* operating system. INET is implemented using the BSD Socket
	4	* interface as the means of communication with the user level.
	5	*
	6	* This file implements the various access functions for the
	7	* PROC file system. It is mainly used for debugging and
	8	* statistics.
	9	*
	10	* Version: $Id: proc.c,v 1.45 2001/05/16 16:45:35 davem Exp $
	11	*
	12	* Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
	13	* Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
	14	* Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
	15	* Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
	16	*
	17	* Fixes:
	18	* Alan Cox : UDP sockets show the rxqueue/txqueue
	19	* using hint flag for the netinfo.
	20	* Pauline Middelink : identd support
	21	* Alan Cox : Make /proc safer.
	22	* Erik Schoenfelder : /proc/net/snmp
	23	* Alan Cox : Handle dead sockets properly.
	24	* Gerhard Koerting : Show both timers
	25	* Alan Cox : Allow inode to be NULL (kernel socket)
	26	* Andi Kleen : Add support for open_requests and
	27	* split functions for more readibility.
	28	* Andi Kleen : Add support for /proc/net/netstat
	29	* Arnaldo C. Melo : Convert to seq_file
	30	*
	31	* This program is free software; you can redistribute it and/or
	32	* modify it under the terms of the GNU General Public License
	33	* as published by the Free Software Foundation; either version
	34	* 2 of the License, or (at your option) any later version.
	35	*/
	36	#include <linux/types.h>
457c4cbc	37	#include <net/net_namespace.h>
1da177e4 LT	38	#include <net/icmp.h>
	39	#include <net/protocol.h>
	40	#include <net/tcp.h>
	41	#include <net/udp.h>
ba4e58ec	42	#include <net/udplite.h>
14c85021	43	#include <linux/inetdevice.h>
1da177e4 LT	44	#include <linux/proc_fs.h>
	45	#include <linux/seq_file.h>
	46	#include <net/sock.h>
	47	#include <net/raw.h>
	48
	49	static int fold_prot_inuse(struct proto *proto)
	50	{
	51	int res = 0;
	52	int cpu;
	53
6f912042	54	for_each_possible_cpu(cpu)
1da177e4 LT	55	res += proto->stats[cpu].inuse;
	56
	57	return res;
	58	}
	59
	60	/*
	61	* Report socket allocation statistics [mea@utu.fi]
	62	*/
	63	static int sockstat_seq_show(struct seq_file seq, void v)
	64	{
1da177e4 LT	65	socket_seq_show(seq);
	66	seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
	67	fold_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
295ff7ed	68	tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
1da177e4 LT	69	atomic_read(&tcp_memory_allocated));
1da177e4 LT	70	seq_printf(seq, "UDP: inuse %d\n", fold_prot_inuse(&udp_prot));
ba4e58ec	71	seq_printf(seq, "UDPLITE: inuse %d\n", fold_prot_inuse(&udplite_prot));
1da177e4 LT	72	seq_printf(seq, "RAW: inuse %d\n", fold_prot_inuse(&raw_prot));
	73	seq_printf(seq, "FRAG: inuse %d memory %d\n", ip_frag_nqueues,
	74	atomic_read(&ip_frag_mem));
	75	return 0;
	76	}
	77
	78	static int sockstat_seq_open(struct inode inode, struct file file)
	79	{
	80	return single_open(file, sockstat_seq_show, NULL);
	81	}
	82
9a32144e	83	static const struct file_operations sockstat_seq_fops = {
1da177e4 LT	84	.owner = THIS_MODULE,
	85	.open = sockstat_seq_open,
	86	.read = seq_read,
	87	.llseek = seq_lseek,
	88	.release = single_release,
	89	};
	90
1da177e4	91	/* snmp items */
9b5b5cff	92	static const struct snmp_mib snmp4_ipstats_list[] = {
1da177e4 LT	93	SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
	94	SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	95	SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	96	SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
	97	SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	98	SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
	99	SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
	100	SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
	101	SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	102	SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	103	SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	104	SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
	105	SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
	106	SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
	107	SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
	108	SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
	109	SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
	110	SNMP_MIB_SENTINEL
	111	};
	112
d831666e MC	113	/* Following RFC4293 items are displayed in /proc/net/netstat */
	114	static const struct snmp_mib snmp4_ipextstats_list[] = {
	115	SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
	116	SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	117	SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	118	SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
	119	SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
	120	SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
	121	SNMP_MIB_SENTINEL
	122	};
	123
9b5b5cff	124	static const struct snmp_mib snmp4_icmp_list[] = {
1da177e4 LT	125	SNMP_MIB_ITEM("InMsgs", ICMP_MIB_INMSGS),
1da177e4 LT	126	SNMP_MIB_ITEM("InErrors", ICMP_MIB_INERRORS),
1da177e4 LT	127	SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS),
1da177e4 LT	128	SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS),
1da177e4 LT	129	SNMP_MIB_SENTINEL
	130	};
	131
96793b48 DS	132	static struct {
	133	char *name;
	134	int index;
	135	} icmpmibmap[] = {
	136	{ "DestUnreachs", ICMP_DEST_UNREACH },
	137	{ "TimeExcds", ICMP_TIME_EXCEEDED },
	138	{ "ParmProbs", ICMP_PARAMETERPROB },
	139	{ "SrcQuenchs", ICMP_SOURCE_QUENCH },
	140	{ "Redirects", ICMP_REDIRECT },
	141	{ "Echos", ICMP_ECHO },
	142	{ "EchoReps", ICMP_ECHOREPLY },
	143	{ "Timestamps", ICMP_TIMESTAMP },
	144	{ "TimestampReps", ICMP_TIMESTAMPREPLY },
	145	{ "AddrMasks", ICMP_ADDRESS },
	146	{ "AddrMaskReps", ICMP_ADDRESSREPLY },
cfcabdcc	147	{ NULL, 0 }
96793b48 DS	148	};
	149
	150
9b5b5cff	151	static const struct snmp_mib snmp4_tcp_list[] = {
1da177e4 LT	152	SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
	153	SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
	154	SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
	155	SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
	156	SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
	157	SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
	158	SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
	159	SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
	160	SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
	161	SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
	162	SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
	163	SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
	164	SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
	165	SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
	166	SNMP_MIB_SENTINEL
	167	};
	168
9b5b5cff	169	static const struct snmp_mib snmp4_udp_list[] = {
1da177e4 LT	170	SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
	171	SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
	172	SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
	173	SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
81aa646c MB	174	SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
81aa646c MB	175	SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
1da177e4 LT	176	SNMP_MIB_SENTINEL
	177	};
	178
9b5b5cff	179	static const struct snmp_mib snmp4_net_list[] = {
1da177e4 LT	180	SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
	181	SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
	182	SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
	183	SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
	184	SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
	185	SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
	186	SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
	187	SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
	188	SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
	189	SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
	190	SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
	191	SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
	192	SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
	193	SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
	194	SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
	195	SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
	196	SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
	197	SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
	198	SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
	199	SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
	200	SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
	201	SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
	202	SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
	203	SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
	204	SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
	205	SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
	206	SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
	207	SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
	208	SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
	209	SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
	210	SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
	211	SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
	212	SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
	213	SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
	214	SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
	215	SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
	216	SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
	217	SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
	218	SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
	219	SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
	220	SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
	221	SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
	222	SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
	223	SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
	224	SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
	225	SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
	226	SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
	227	SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
	228	SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
	229	SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
	230	SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
	231	SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
	232	SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
	233	SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
	234	SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
	235	SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
	236	SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
	237	SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
	238	SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
	239	SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
	240	SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
	241	SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
	242	SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
	243	SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
244	SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
18f02545 IJ	245	SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
	246	SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
	247	SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
912d8f0b	248	SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
1da177e4 LT	249	SNMP_MIB_SENTINEL
	250	};
	251
96793b48 DS	252	static void icmpmsg_put(struct seq_file *seq)
	253	{
	254	#define PERLINE 16
	255
	256	int j, i, count;
	257	static int out[PERLINE];
	258
	259	count = 0;
	260	for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
	261
	262	if (snmp_fold_field((void **) icmpmsg_statistics, i))
	263	out[count++] = i;
	264	if (count < PERLINE)
	265	continue;
	266
	267	seq_printf(seq, "\nIcmpMsg:");
	268	for (j = 0; j < PERLINE; ++j)
	269	seq_printf(seq, " %sType%u", i & 0x100 ? "Out" : "In",
	270	i & 0xff);
	271	seq_printf(seq, "\nIcmpMsg: ");
	272	for (j = 0; j < PERLINE; ++j)
	273	seq_printf(seq, " %lu",
	274	snmp_fold_field((void **) icmpmsg_statistics,
	275	out[j]));
	276	seq_putc(seq, '\n');
	277	}
	278	if (count) {
	279	seq_printf(seq, "\nIcmpMsg:");
	280	for (j = 0; j < count; ++j)
	281	seq_printf(seq, " %sType%u", out[j] & 0x100 ? "Out" :
	282	"In", out[j] & 0xff);
	283	seq_printf(seq, "\nIcmpMsg:");
	284	for (j = 0; j < count; ++j)
	285	seq_printf(seq, " %lu", snmp_fold_field((void **)
	286	icmpmsg_statistics, out[j]));
	287	}
	288
	289	#undef PERLINE
	290	}
	291
	292	static void icmp_put(struct seq_file *seq)
	293	{
	294	int i;
	295
	296	seq_puts(seq, "\nIcmp: InMsgs InErrors");
	297	for (i=0; icmpmibmap[i].name != NULL; i++)
	298	seq_printf(seq, " In%s", icmpmibmap[i].name);
	299	seq_printf(seq, " OutMsgs OutErrors");
	300	for (i=0; icmpmibmap[i].name != NULL; i++)
	301	seq_printf(seq, " Out%s", icmpmibmap[i].name);
	302	seq_printf(seq, "\nIcmp: %lu %lu",
	303	snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INMSGS),
	304	snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INERRORS));
	305	for (i=0; icmpmibmap[i].name != NULL; i++)
	306	seq_printf(seq, " %lu",
	307	snmp_fold_field((void **) icmpmsg_statistics,
	308	icmpmibmap[i].index));
	309	seq_printf(seq, " %lu %lu",
	310	snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTMSGS),
	311	snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTERRORS));
	312	for (i=0; icmpmibmap[i].name != NULL; i++)
	313	seq_printf(seq, " %lu",
	314	snmp_fold_field((void **) icmpmsg_statistics,
	315	icmpmibmap[i].index));
316	}
317
1da177e4 LT	318	/*
	319	* Called from the PROCfs module. This outputs /proc/net/snmp.
	320	*/
	321	static int snmp_seq_show(struct seq_file seq, void v)
	322	{
	323	int i;
	324
	325	seq_puts(seq, "Ip: Forwarding DefaultTTL");
	326
	327	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
	328	seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
	329
	330	seq_printf(seq, "\nIp: %d %d",
42f811b8	331	IPV4_DEVCONF_ALL(FORWARDING) ? 1 : 2, sysctl_ip_default_ttl);
1da177e4 LT	332
	333	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
	334	seq_printf(seq, " %lu",
5e0f0435 HX	335	snmp_fold_field((void **)ip_statistics,
5e0f0435 HX	336	snmp4_ipstats_list[i].entry));
1da177e4	337
96793b48 DS	338	icmp_put(seq); /* RFC 2011 compatibility */
96793b48 DS	339	icmpmsg_put(seq);
1da177e4 LT	340
	341	seq_puts(seq, "\nTcp:");
	342	for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
	343	seq_printf(seq, " %s", snmp4_tcp_list[i].name);
	344
	345	seq_puts(seq, "\nTcp:");
	346	for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
	347	/* MaxConn field is signed, RFC 2012 */
	348	if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
	349	seq_printf(seq, " %ld",
5e0f0435 HX	350	snmp_fold_field((void **)tcp_statistics,
5e0f0435 HX	351	snmp4_tcp_list[i].entry));
1da177e4 LT	352	else
1da177e4 LT	353	seq_printf(seq, " %lu",
5e0f0435 HX	354	snmp_fold_field((void **)tcp_statistics,
5e0f0435 HX	355	snmp4_tcp_list[i].entry));
1da177e4 LT	356	}
	357
	358	seq_puts(seq, "\nUdp:");
	359	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
	360	seq_printf(seq, " %s", snmp4_udp_list[i].name);
	361
	362	seq_puts(seq, "\nUdp:");
	363	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
	364	seq_printf(seq, " %lu",
5e0f0435 HX	365	snmp_fold_field((void **)udp_statistics,
5e0f0435 HX	366	snmp4_udp_list[i].entry));
1da177e4	367
ba4e58ec GR	368	/* the UDP and UDP-Lite MIBs are the same */
	369	seq_puts(seq, "\nUdpLite:");
	370	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
	371	seq_printf(seq, " %s", snmp4_udp_list[i].name);
	372
	373	seq_puts(seq, "\nUdpLite:");
	374	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
	375	seq_printf(seq, " %lu",
5e0f0435 HX	376	snmp_fold_field((void **)udplite_statistics,
5e0f0435 HX	377	snmp4_udp_list[i].entry));
ba4e58ec	378
1da177e4 LT	379	seq_putc(seq, '\n');
	380	return 0;
	381	}
	382
	383	static int snmp_seq_open(struct inode inode, struct file file)
	384	{
	385	return single_open(file, snmp_seq_show, NULL);
	386	}
	387
9a32144e	388	static const struct file_operations snmp_seq_fops = {
1da177e4 LT	389	.owner = THIS_MODULE,
	390	.open = snmp_seq_open,
	391	.read = seq_read,
	392	.llseek = seq_lseek,
	393	.release = single_release,
	394	};
	395
96793b48 DS	396
96793b48 DS	397
1da177e4 LT	398	/*
	399	* Output /proc/net/netstat
	400	*/
	401	static int netstat_seq_show(struct seq_file seq, void v)
	402	{
	403	int i;
	404
	405	seq_puts(seq, "TcpExt:");
	406	for (i = 0; snmp4_net_list[i].name != NULL; i++)
	407	seq_printf(seq, " %s", snmp4_net_list[i].name);
	408
	409	seq_puts(seq, "\nTcpExt:");
	410	for (i = 0; snmp4_net_list[i].name != NULL; i++)
	411	seq_printf(seq, " %lu",
5e0f0435 HX	412	snmp_fold_field((void **)net_statistics,
5e0f0435 HX	413	snmp4_net_list[i].entry));
1da177e4	414
d831666e MC	415	seq_puts(seq, "\nIpExt:");
	416	for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
	417	seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
	418
	419	seq_puts(seq, "\nIpExt:");
	420	for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
	421	seq_printf(seq, " %lu",
	422	snmp_fold_field((void **)ip_statistics,
	423	snmp4_ipextstats_list[i].entry));
	424
1da177e4 LT	425	seq_putc(seq, '\n');
	426	return 0;
	427	}
	428
	429	static int netstat_seq_open(struct inode inode, struct file file)
	430	{
	431	return single_open(file, netstat_seq_show, NULL);
	432	}
	433
9a32144e	434	static const struct file_operations netstat_seq_fops = {
1da177e4 LT	435	.owner = THIS_MODULE,
	436	.open = netstat_seq_open,
	437	.read = seq_read,
	438	.llseek = seq_lseek,
	439	.release = single_release,
	440	};
	441
	442	int __init ip_misc_proc_init(void)
	443	{
	444	int rc = 0;
	445
457c4cbc	446	if (!proc_net_fops_create(&init_net, "netstat", S_IRUGO, &netstat_seq_fops))
1da177e4 LT	447	goto out_netstat;
1da177e4 LT	448
457c4cbc	449	if (!proc_net_fops_create(&init_net, "snmp", S_IRUGO, &snmp_seq_fops))
1da177e4 LT	450	goto out_snmp;
1da177e4 LT	451
457c4cbc	452	if (!proc_net_fops_create(&init_net, "sockstat", S_IRUGO, &sockstat_seq_fops))
1da177e4 LT	453	goto out_sockstat;
	454	out:
	455	return rc;
	456	out_sockstat:
457c4cbc	457	proc_net_remove(&init_net, "snmp");
1da177e4	458	out_snmp:
457c4cbc	459	proc_net_remove(&init_net, "netstat");
1da177e4 LT	460	out_netstat:
	461	rc = -ENOMEM;
	462	goto out;
	463	}
33490170	464