[linux.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, <[email protected]>
 *		Gerald J. Heim, <[email protected]>
 *		Fred Baumgarten, <[email protected]>
 *		Erik Schoenfelder, <[email protected]>
 *
 * 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/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 [[email protected]]
 */
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 struct file_operations sockstat_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = sockstat_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release,
};

static unsigned long
fold_field(void *mib[], int offt)
{
	unsigned long res = 0;
	int i;

	for_each_possible_cpu(i) {
		res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
		res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
	}
	return res;
}

/* 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
};

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("InDestUnreachs", ICMP_MIB_INDESTUNREACHS),
	SNMP_MIB_ITEM("InTimeExcds", ICMP_MIB_INTIMEEXCDS),
	SNMP_MIB_ITEM("InParmProbs", ICMP_MIB_INPARMPROBS),
	SNMP_MIB_ITEM("InSrcQuenchs", ICMP_MIB_INSRCQUENCHS),
	SNMP_MIB_ITEM("InRedirects", ICMP_MIB_INREDIRECTS),
	SNMP_MIB_ITEM("InEchos", ICMP_MIB_INECHOS),
	SNMP_MIB_ITEM("InEchoReps", ICMP_MIB_INECHOREPS),
	SNMP_MIB_ITEM("InTimestamps", ICMP_MIB_INTIMESTAMPS),
	SNMP_MIB_ITEM("InTimestampReps", ICMP_MIB_INTIMESTAMPREPS),
	SNMP_MIB_ITEM("InAddrMasks", ICMP_MIB_INADDRMASKS),
	SNMP_MIB_ITEM("InAddrMaskReps", ICMP_MIB_INADDRMASKREPS),
	SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS),
	SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS),
	SNMP_MIB_ITEM("OutDestUnreachs", ICMP_MIB_OUTDESTUNREACHS),
	SNMP_MIB_ITEM("OutTimeExcds", ICMP_MIB_OUTTIMEEXCDS),
	SNMP_MIB_ITEM("OutParmProbs", ICMP_MIB_OUTPARMPROBS),
	SNMP_MIB_ITEM("OutSrcQuenchs", ICMP_MIB_OUTSRCQUENCHS),
	SNMP_MIB_ITEM("OutRedirects", ICMP_MIB_OUTREDIRECTS),
	SNMP_MIB_ITEM("OutEchos", ICMP_MIB_OUTECHOS),
	SNMP_MIB_ITEM("OutEchoReps", ICMP_MIB_OUTECHOREPS),
	SNMP_MIB_ITEM("OutTimestamps", ICMP_MIB_OUTTIMESTAMPS),
	SNMP_MIB_ITEM("OutTimestampReps", ICMP_MIB_OUTTIMESTAMPREPS),
	SNMP_MIB_ITEM("OutAddrMasks", ICMP_MIB_OUTADDRMASKS),
	SNMP_MIB_ITEM("OutAddrMaskReps", ICMP_MIB_OUTADDRMASKREPS),
	SNMP_MIB_SENTINEL
};

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_SENTINEL
};

/*
 *	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.forwarding ? 1 : 2, sysctl_ip_default_ttl);

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

	seq_puts(seq, "\nIcmp:");
	for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
		seq_printf(seq, " %s", snmp4_icmp_list[i].name);

	seq_puts(seq, "\nIcmp:");
	for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
		seq_printf(seq, " %lu",
			   fold_field((void **) icmp_statistics, 
				      snmp4_icmp_list[i].entry));

	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",
				   fold_field((void **) tcp_statistics, 
					      snmp4_tcp_list[i].entry));
		else
			seq_printf(seq, " %lu",
				   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",
			   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",
			   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 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",
			   fold_field((void **) net_statistics, 
				      snmp4_net_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 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("netstat", S_IRUGO, &netstat_seq_fops))
		goto out_netstat;

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

	if (!proc_net_fops_create("sockstat", S_IRUGO, &sockstat_seq_fops))
		goto out_sockstat;
out:
	return rc;
out_sockstat:
	proc_net_remove("snmp");
out_snmp:
	proc_net_remove("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, <[email protected]>
	13	* Gerald J. Heim, <[email protected]>
	14	* Fred Baumgarten, <[email protected]>
	15	* Erik Schoenfelder, <[email protected]>
	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>
	37	#include <net/icmp.h>
	38	#include <net/protocol.h>
	39	#include <net/tcp.h>
	40	#include <net/udp.h>
ba4e58ec	41	#include <net/udplite.h>
14c85021	42	#include <linux/inetdevice.h>
1da177e4 LT	43	#include <linux/proc_fs.h>
	44	#include <linux/seq_file.h>
	45	#include <net/sock.h>
	46	#include <net/raw.h>
	47
	48	static int fold_prot_inuse(struct proto *proto)
	49	{
	50	int res = 0;
	51	int cpu;
	52
6f912042	53	for_each_possible_cpu(cpu)
1da177e4 LT	54	res += proto->stats[cpu].inuse;
	55
	56	return res;
	57	}
	58
	59	/*
	60	* Report socket allocation statistics [[email protected]]
	61	*/
	62	static int sockstat_seq_show(struct seq_file seq, void v)
	63	{
1da177e4 LT	64	socket_seq_show(seq);
	65	seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
	66	fold_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
295ff7ed	67	tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
1da177e4 LT	68	atomic_read(&tcp_memory_allocated));
1da177e4 LT	69	seq_printf(seq, "UDP: inuse %d\n", fold_prot_inuse(&udp_prot));
ba4e58ec	70	seq_printf(seq, "UDPLITE: inuse %d\n", fold_prot_inuse(&udplite_prot));
1da177e4 LT	71	seq_printf(seq, "RAW: inuse %d\n", fold_prot_inuse(&raw_prot));
	72	seq_printf(seq, "FRAG: inuse %d memory %d\n", ip_frag_nqueues,
	73	atomic_read(&ip_frag_mem));
	74	return 0;
	75	}
	76
	77	static int sockstat_seq_open(struct inode inode, struct file file)
	78	{
	79	return single_open(file, sockstat_seq_show, NULL);
	80	}
	81
	82	static struct file_operations sockstat_seq_fops = {
	83	.owner = THIS_MODULE,
	84	.open = sockstat_seq_open,
	85	.read = seq_read,
	86	.llseek = seq_lseek,
	87	.release = single_release,
	88	};
	89
	90	static unsigned long
	91	fold_field(void *mib[], int offt)
	92	{
	93	unsigned long res = 0;
	94	int i;
	95
6f912042	96	for_each_possible_cpu(i) {
1da177e4 LT	97	res += (((unsigned long ) per_cpu_ptr(mib[0], i)) + offt);
	98	res += (((unsigned long ) per_cpu_ptr(mib[1], i)) + offt);
	99	}
	100	return res;
	101	}
	102
	103	/* snmp items */
9b5b5cff	104	static const struct snmp_mib snmp4_ipstats_list[] = {
1da177e4 LT	105	SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
	106	SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	107	SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	108	SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
	109	SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	110	SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
	111	SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
	112	SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
	113	SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	114	SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	115	SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	116	SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
	117	SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
	118	SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
	119	SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
	120	SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
	121	SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
	122	SNMP_MIB_SENTINEL
	123	};
	124
9b5b5cff	125	static const struct snmp_mib snmp4_icmp_list[] = {
1da177e4 LT	126	SNMP_MIB_ITEM("InMsgs", ICMP_MIB_INMSGS),
	127	SNMP_MIB_ITEM("InErrors", ICMP_MIB_INERRORS),
	128	SNMP_MIB_ITEM("InDestUnreachs", ICMP_MIB_INDESTUNREACHS),
	129	SNMP_MIB_ITEM("InTimeExcds", ICMP_MIB_INTIMEEXCDS),
	130	SNMP_MIB_ITEM("InParmProbs", ICMP_MIB_INPARMPROBS),
	131	SNMP_MIB_ITEM("InSrcQuenchs", ICMP_MIB_INSRCQUENCHS),
	132	SNMP_MIB_ITEM("InRedirects", ICMP_MIB_INREDIRECTS),
	133	SNMP_MIB_ITEM("InEchos", ICMP_MIB_INECHOS),
	134	SNMP_MIB_ITEM("InEchoReps", ICMP_MIB_INECHOREPS),
	135	SNMP_MIB_ITEM("InTimestamps", ICMP_MIB_INTIMESTAMPS),
	136	SNMP_MIB_ITEM("InTimestampReps", ICMP_MIB_INTIMESTAMPREPS),
	137	SNMP_MIB_ITEM("InAddrMasks", ICMP_MIB_INADDRMASKS),
	138	SNMP_MIB_ITEM("InAddrMaskReps", ICMP_MIB_INADDRMASKREPS),
	139	SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS),
	140	SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS),
	141	SNMP_MIB_ITEM("OutDestUnreachs", ICMP_MIB_OUTDESTUNREACHS),
	142	SNMP_MIB_ITEM("OutTimeExcds", ICMP_MIB_OUTTIMEEXCDS),
	143	SNMP_MIB_ITEM("OutParmProbs", ICMP_MIB_OUTPARMPROBS),
	144	SNMP_MIB_ITEM("OutSrcQuenchs", ICMP_MIB_OUTSRCQUENCHS),
	145	SNMP_MIB_ITEM("OutRedirects", ICMP_MIB_OUTREDIRECTS),
	146	SNMP_MIB_ITEM("OutEchos", ICMP_MIB_OUTECHOS),
	147	SNMP_MIB_ITEM("OutEchoReps", ICMP_MIB_OUTECHOREPS),
	148	SNMP_MIB_ITEM("OutTimestamps", ICMP_MIB_OUTTIMESTAMPS),
	149	SNMP_MIB_ITEM("OutTimestampReps", ICMP_MIB_OUTTIMESTAMPREPS),
	150	SNMP_MIB_ITEM("OutAddrMasks", ICMP_MIB_OUTADDRMASKS),
	151	SNMP_MIB_ITEM("OutAddrMaskReps", ICMP_MIB_OUTADDRMASKREPS),
	152	SNMP_MIB_SENTINEL
	153	};
	154
9b5b5cff	155	static const struct snmp_mib snmp4_tcp_list[] = {
1da177e4 LT	156	SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
	157	SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
	158	SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
	159	SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
	160	SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
	161	SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
	162	SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
	163	SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
	164	SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
	165	SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
	166	SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
	167	SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
	168	SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
	169	SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
	170	SNMP_MIB_SENTINEL
	171	};
	172
9b5b5cff	173	static const struct snmp_mib snmp4_udp_list[] = {
1da177e4 LT	174	SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
	175	SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
	176	SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
	177	SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
81aa646c MB	178	SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
81aa646c MB	179	SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
1da177e4 LT	180	SNMP_MIB_SENTINEL
	181	};
	182
9b5b5cff	183	static const struct snmp_mib snmp4_net_list[] = {
1da177e4 LT	184	SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
	185	SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
	186	SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
	187	SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
	188	SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
	189	SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
	190	SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
	191	SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
	192	SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
	193	SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
	194	SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
	195	SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
	196	SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
	197	SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
	198	SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
	199	SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
	200	SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
	201	SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
	202	SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
	203	SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
	204	SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
	205	SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
	206	SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
	207	SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
	208	SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
	209	SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
	210	SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
	211	SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
	212	SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
	213	SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
	214	SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
	215	SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
	216	SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
	217	SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
	218	SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
	219	SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
	220	SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
	221	SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
	222	SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
	223	SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
	224	SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
	225	SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
	226	SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
	227	SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
	228	SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
	229	SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
	230	SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
	231	SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
	232	SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
	233	SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
	234	SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
	235	SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
	236	SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
	237	SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
	238	SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
	239	SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
	240	SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
	241	SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
	242	SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
	243	SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
	244	SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
	245	SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
	246	SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
	247	SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
248	SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
249	SNMP_MIB_SENTINEL
250	};
251
252	/*
253	* Called from the PROCfs module. This outputs /proc/net/snmp.
254	*/
255	static int snmp_seq_show(struct seq_file seq, void v)
256	{
257	int i;
258
259	seq_puts(seq, "Ip: Forwarding DefaultTTL");
260
261	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
262	seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
263
264	seq_printf(seq, "\nIp: %d %d",
265	ipv4_devconf.forwarding ? 1 : 2, sysctl_ip_default_ttl);
266
267	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
268	seq_printf(seq, " %lu",
269	fold_field((void **) ip_statistics,
270	snmp4_ipstats_list[i].entry));
271
272	seq_puts(seq, "\nIcmp:");
273	for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
274	seq_printf(seq, " %s", snmp4_icmp_list[i].name);
275
276	seq_puts(seq, "\nIcmp:");
277	for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
278	seq_printf(seq, " %lu",
279	fold_field((void **) icmp_statistics,
280	snmp4_icmp_list[i].entry));
281
282	seq_puts(seq, "\nTcp:");
283	for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
284	seq_printf(seq, " %s", snmp4_tcp_list[i].name);
285
286	seq_puts(seq, "\nTcp:");
287	for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
288	/* MaxConn field is signed, RFC 2012 */
289	if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
290	seq_printf(seq, " %ld",
291	fold_field((void **) tcp_statistics,
292	snmp4_tcp_list[i].entry));
293	else
294	seq_printf(seq, " %lu",
295	fold_field((void **) tcp_statistics,
296	snmp4_tcp_list[i].entry));
297	}
298
299	seq_puts(seq, "\nUdp:");
300	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
301	seq_printf(seq, " %s", snmp4_udp_list[i].name);
302
303	seq_puts(seq, "\nUdp:");
304	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
305	seq_printf(seq, " %lu",
306	fold_field((void **) udp_statistics,
307	snmp4_udp_list[i].entry));
308
ba4e58ec GR	309	/* the UDP and UDP-Lite MIBs are the same */
	310	seq_puts(seq, "\nUdpLite:");
	311	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
	312	seq_printf(seq, " %s", snmp4_udp_list[i].name);
	313
	314	seq_puts(seq, "\nUdpLite:");
	315	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
	316	seq_printf(seq, " %lu",
	317	fold_field((void **) udplite_statistics,
	318	snmp4_udp_list[i].entry) );
	319
1da177e4 LT	320	seq_putc(seq, '\n');
	321	return 0;
	322	}
	323
	324	static int snmp_seq_open(struct inode inode, struct file file)
	325	{
	326	return single_open(file, snmp_seq_show, NULL);
	327	}
	328
	329	static struct file_operations snmp_seq_fops = {
	330	.owner = THIS_MODULE,
	331	.open = snmp_seq_open,
	332	.read = seq_read,
	333	.llseek = seq_lseek,
	334	.release = single_release,
	335	};
	336
	337	/*
	338	* Output /proc/net/netstat
	339	*/
	340	static int netstat_seq_show(struct seq_file seq, void v)
	341	{
	342	int i;
	343
	344	seq_puts(seq, "TcpExt:");
	345	for (i = 0; snmp4_net_list[i].name != NULL; i++)
	346	seq_printf(seq, " %s", snmp4_net_list[i].name);
	347
	348	seq_puts(seq, "\nTcpExt:");
	349	for (i = 0; snmp4_net_list[i].name != NULL; i++)
	350	seq_printf(seq, " %lu",
	351	fold_field((void **) net_statistics,
	352	snmp4_net_list[i].entry));
	353
	354	seq_putc(seq, '\n');
	355	return 0;
	356	}
	357
	358	static int netstat_seq_open(struct inode inode, struct file file)
	359	{
	360	return single_open(file, netstat_seq_show, NULL);
	361	}
	362
	363	static struct file_operations netstat_seq_fops = {
	364	.owner = THIS_MODULE,
	365	.open = netstat_seq_open,
	366	.read = seq_read,
	367	.llseek = seq_lseek,
	368	.release = single_release,
	369	};
	370
	371	int __init ip_misc_proc_init(void)
	372	{
	373	int rc = 0;
	374
	375	if (!proc_net_fops_create("netstat", S_IRUGO, &netstat_seq_fops))
	376	goto out_netstat;
	377
	378	if (!proc_net_fops_create("snmp", S_IRUGO, &snmp_seq_fops))
	379	goto out_snmp;
	380
	381	if (!proc_net_fops_create("sockstat", S_IRUGO, &sockstat_seq_fops))
	382	goto out_sockstat;
	383	out:
384	return rc;
385	out_sockstat:
386	proc_net_remove("snmp");
387	out_snmp:
388	proc_net_remove("netstat");
389	out_netstat:
390	rc = -ENOMEM;
391	goto out;
392	}
393