[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / ipv6 / 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.  This is very similar to the IPv4 version,
 *		except it reports the sockets in the INET6 address family.
 *
 * Version:	$Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $
 *
 * Authors:	David S. Miller (davem@caip.rutgers.edu)
 * 		YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
 *
 *		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/socket.h>
#include <linux/net.h>
#include <linux/ipv6.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/stddef.h>
#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/transp_v6.h>
#include <net/ipv6.h>

static struct proc_dir_entry *proc_net_devsnmp6;

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;
}

static int sockstat6_seq_show(struct seq_file *seq, void *v)
{
	seq_printf(seq, "TCP6: inuse %d\n",
		       fold_prot_inuse(&tcpv6_prot));
	seq_printf(seq, "UDP6: inuse %d\n",
		       fold_prot_inuse(&udpv6_prot));
	seq_printf(seq, "UDPLITE6: inuse %d\n",
			fold_prot_inuse(&udplitev6_prot));
	seq_printf(seq, "RAW6: inuse %d\n",
		       fold_prot_inuse(&rawv6_prot));
	seq_printf(seq, "FRAG6: inuse %d memory %d\n",
		       ip6_frag_nqueues(), ip6_frag_mem());
	return 0;
}

static struct snmp_mib snmp6_ipstats_list[] = {
/* ipv6 mib according to RFC 2465 */
	SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES),
	SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
	SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
	SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
	SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
	SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
	SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
	SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
	SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
	SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
	SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
	SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
	SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
	SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
	SNMP_MIB_SENTINEL
};

static struct snmp_mib snmp6_icmp6_list[] = {
/* icmpv6 mib according to RFC 2466 */
	SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
	SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
	SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
	SNMP_MIB_SENTINEL
};

/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
static char *icmp6type2name[256] = {
	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
	[ICMPV6_TIME_EXCEED] = "TimeExcds",
	[ICMPV6_PARAMPROB] = "ParmProblems",
	[ICMPV6_ECHO_REQUEST] = "EchoRequest",
	[ICMPV6_ECHO_REPLY] = "EchoReplies",
	[ICMPV6_MGM_QUERY] = "GroupMembQueries",
	[ICMPV6_MGM_REPORT] = "GroupMembResponses",
	[ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
	[ICMPV6_MLD2_REPORT] = "MLDv2Reports",
	[NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
	[NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
	[NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
	[NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
	[NDISC_REDIRECT] = "NeighborRedirects",
};


static struct snmp_mib snmp6_udp6_list[] = {
	SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
	SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
	SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
	SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
	SNMP_MIB_SENTINEL
};

static struct snmp_mib snmp6_udplite6_list[] = {
	SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
	SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
	SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
	SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
	SNMP_MIB_SENTINEL
};

static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
{
	static char name[32];
	int i;

	/* print by name -- deprecated items */
	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
		int icmptype;
		char *p;

		icmptype = i & 0xff;
		p = icmp6type2name[icmptype];
		if (!p)	/* don't print un-named types here */
			continue;
		(void) snprintf(name, sizeof(name)-1, "Icmp6%s%s",
			i & 0x100 ? "Out" : "In", p);
		seq_printf(seq, "%-32s\t%lu\n", name,
			snmp_fold_field(mib, i));
	}

	/* print by number (nonzero only) - ICMPMsgStat format */
	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
		unsigned long val;

		val = snmp_fold_field(mib, i);
		if (!val)
			continue;
		(void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u",
			i & 0x100 ?  "Out" : "In", i & 0xff);
		seq_printf(seq, "%-32s\t%lu\n", name, val);
	}
	return;
}

static inline void
snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
{
	int i;
	for (i=0; itemlist[i].name; i++)
		seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
			   snmp_fold_field(mib, itemlist[i].entry));
}

static int snmp6_seq_show(struct seq_file *seq, void *v)
{
	struct inet6_dev *idev = (struct inet6_dev *)seq->private;

	if (idev) {
		seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
		snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list);
		snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
		snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg);
	} else {
		snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
		snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
		snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics);
		snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
		snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list);
	}
	return 0;
}

static int sockstat6_seq_open(struct inode *inode, struct file *file)
{
	return single_open(file, sockstat6_seq_show, NULL);
}

static const struct file_operations sockstat6_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = sockstat6_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release,
};

static int snmp6_seq_open(struct inode *inode, struct file *file)
{
	return single_open(file, snmp6_seq_show, PDE(inode)->data);
}

static const struct file_operations snmp6_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = snmp6_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release,
};

int snmp6_register_dev(struct inet6_dev *idev)
{
	struct proc_dir_entry *p;

	if (!idev || !idev->dev)
		return -EINVAL;

	if (!proc_net_devsnmp6)
		return -ENOENT;

	p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
	if (!p)
		return -ENOMEM;

	p->data = idev;
	p->proc_fops = &snmp6_seq_fops;

	idev->stats.proc_dir_entry = p;
	return 0;
}

int snmp6_unregister_dev(struct inet6_dev *idev)
{
	if (!proc_net_devsnmp6)
		return -ENOENT;
	if (!idev || !idev->stats.proc_dir_entry)
		return -EINVAL;
	remove_proc_entry(idev->stats.proc_dir_entry->name,
			  proc_net_devsnmp6);
	idev->stats.proc_dir_entry = NULL;
	return 0;
}

int __init ipv6_misc_proc_init(void)
{
	int rc = 0;

	if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops))
		goto proc_snmp6_fail;

	proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net);
	if (!proc_net_devsnmp6)
		goto proc_dev_snmp6_fail;

	if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops))
		goto proc_sockstat6_fail;
out:
	return rc;

proc_sockstat6_fail:
	proc_net_remove(&init_net, "dev_snmp6");
proc_dev_snmp6_fail:
	proc_net_remove(&init_net, "snmp6");
proc_snmp6_fail:
	rc = -ENOMEM;
	goto out;
}

void ipv6_misc_proc_exit(void)
{
	proc_net_remove(&init_net, "sockstat6");
	proc_net_remove(&init_net, "dev_snmp6");
	proc_net_remove(&init_net, "snmp6");
}
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. This is very similar to the IPv4 version,
	8	* except it reports the sockets in the INET6 address family.
	9	*
	10	* Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $
	11	*
	12	* Authors: David S. Miller (davem@caip.rutgers.edu)
	13	* YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License
	17	* as published by the Free Software Foundation; either version
	18	* 2 of the License, or (at your option) any later version.
	19	*/
1da177e4 LT	20	#include <linux/socket.h>
	21	#include <linux/net.h>
	22	#include <linux/ipv6.h>
	23	#include <linux/proc_fs.h>
	24	#include <linux/seq_file.h>
	25	#include <linux/stddef.h>
457c4cbc	26	#include <net/net_namespace.h>
7f7d9a6b	27	#include <net/ip.h>
1da177e4 LT	28	#include <net/sock.h>
	29	#include <net/tcp.h>
	30	#include <net/transp_v6.h>
	31	#include <net/ipv6.h>
	32
1da177e4 LT	33	static struct proc_dir_entry *proc_net_devsnmp6;
	34
	35	static int fold_prot_inuse(struct proto *proto)
	36	{
	37	int res = 0;
	38	int cpu;
	39
6f912042	40	for_each_possible_cpu(cpu)
1da177e4 LT	41	res += proto->stats[cpu].inuse;
	42
	43	return res;
	44	}
	45
	46	static int sockstat6_seq_show(struct seq_file seq, void v)
	47	{
	48	seq_printf(seq, "TCP6: inuse %d\n",
	49	fold_prot_inuse(&tcpv6_prot));
	50	seq_printf(seq, "UDP6: inuse %d\n",
	51	fold_prot_inuse(&udpv6_prot));
ba4e58ec	52	seq_printf(seq, "UDPLITE6: inuse %d\n",
1ab1457c	53	fold_prot_inuse(&udplitev6_prot));
1da177e4 LT	54	seq_printf(seq, "RAW6: inuse %d\n",
	55	fold_prot_inuse(&rawv6_prot));
	56	seq_printf(seq, "FRAG6: inuse %d memory %d\n",
7eb95156	57	ip6_frag_nqueues(), ip6_frag_mem());
1da177e4 LT	58	return 0;
	59	}
	60
	61	static struct snmp_mib snmp6_ipstats_list[] = {
	62	/* ipv6 mib according to RFC 2465 */
	63	SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES),
	64	SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	65	SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
	66	SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
	67	SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	68	SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	69	SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	70	SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
	71	SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
	72	SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
	73	SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
	74	SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	75	SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	76	SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	77	SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
	78	SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
	79	SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
	80	SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
	81	SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
	82	SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
	83	SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	84	SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
	85	SNMP_MIB_SENTINEL
	86	};
	87
	88	static struct snmp_mib snmp6_icmp6_list[] = {
14878f75	89	/* icmpv6 mib according to RFC 2466 */
1da177e4 LT	90	SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
1da177e4 LT	91	SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
1da177e4	92	SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
1da177e4 LT	93	SNMP_MIB_SENTINEL
	94	};
	95
14878f75 DS	96	/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
	97	static char *icmp6type2name[256] = {
	98	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
	99	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
	100	[ICMPV6_TIME_EXCEED] = "TimeExcds",
	101	[ICMPV6_PARAMPROB] = "ParmProblems",
	102	[ICMPV6_ECHO_REQUEST] = "EchoRequest",
	103	[ICMPV6_ECHO_REPLY] = "EchoReplies",
	104	[ICMPV6_MGM_QUERY] = "GroupMembQueries",
	105	[ICMPV6_MGM_REPORT] = "GroupMembResponses",
	106	[ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
	107	[ICMPV6_MLD2_REPORT] = "MLDv2Reports",
	108	[NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
	109	[NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
	110	[NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
	111	[NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
	112	[NDISC_REDIRECT] = "NeighborRedirects",
	113	};
	114
	115
1da177e4 LT	116	static struct snmp_mib snmp6_udp6_list[] = {
	117	SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
	118	SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
	119	SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
	120	SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
	121	SNMP_MIB_SENTINEL
	122	};
	123
ba4e58ec GR	124	static struct snmp_mib snmp6_udplite6_list[] = {
	125	SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
	126	SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
	127	SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
	128	SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
	129	SNMP_MIB_SENTINEL
	130	};
	131
14878f75 DS	132	static void snmp6_seq_show_icmpv6msg(struct seq_file seq, void *mib)
	133	{
	134	static char name[32];
	135	int i;
	136
	137	/* print by name -- deprecated items */
	138	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	139	int icmptype;
	140	char *p;
	141
	142	icmptype = i & 0xff;
	143	p = icmp6type2name[icmptype];
	144	if (!p) /* don't print un-named types here */
	145	continue;
	146	(void) snprintf(name, sizeof(name)-1, "Icmp6%s%s",
	147	i & 0x100 ? "Out" : "In", p);
	148	seq_printf(seq, "%-32s\t%lu\n", name,
	149	snmp_fold_field(mib, i));
	150	}
	151
	152	/* print by number (nonzero only) - ICMPMsgStat format */
	153	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	154	unsigned long val;
	155
	156	val = snmp_fold_field(mib, i);
	157	if (!val)
	158	continue;
	159	(void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u",
	160	i & 0x100 ? "Out" : "In", i & 0xff);
	161	seq_printf(seq, "%-32s\t%lu\n", name, val);
	162	}
	163	return;
	164	}
	165
1da177e4 LT	166	static inline void
	167	snmp6_seq_show_item(struct seq_file seq, void mib, struct snmp_mib itemlist)
	168	{
	169	int i;
	170	for (i=0; itemlist[i].name; i++)
1ab1457c	171	seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
7f7d9a6b	172	snmp_fold_field(mib, itemlist[i].entry));
1da177e4 LT	173	}
	174
	175	static int snmp6_seq_show(struct seq_file seq, void v)
	176	{
	177	struct inet6_dev idev = (struct inet6_dev )seq->private;
	178
	179	if (idev) {
	180	seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
a11d206d	181	snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list);
1da177e4	182	snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
14878f75	183	snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg);
1da177e4 LT	184	} else {
	185	snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
	186	snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
14878f75	187	snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics);
1da177e4	188	snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
ba4e58ec	189	snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list);
1da177e4 LT	190	}
	191	return 0;
	192	}
	193
	194	static int sockstat6_seq_open(struct inode inode, struct file file)
	195	{
	196	return single_open(file, sockstat6_seq_show, NULL);
	197	}
	198
9a32144e	199	static const struct file_operations sockstat6_seq_fops = {
1da177e4 LT	200	.owner = THIS_MODULE,
	201	.open = sockstat6_seq_open,
	202	.read = seq_read,
	203	.llseek = seq_lseek,
	204	.release = single_release,
	205	};
	206
	207	static int snmp6_seq_open(struct inode inode, struct file file)
	208	{
	209	return single_open(file, snmp6_seq_show, PDE(inode)->data);
	210	}
	211
9a32144e	212	static const struct file_operations snmp6_seq_fops = {
1da177e4 LT	213	.owner = THIS_MODULE,
	214	.open = snmp6_seq_open,
	215	.read = seq_read,
	216	.llseek = seq_lseek,
	217	.release = single_release,
	218	};
	219
	220	int snmp6_register_dev(struct inet6_dev *idev)
	221	{
	222	struct proc_dir_entry *p;
	223
	224	if (!idev \|\| !idev->dev)
	225	return -EINVAL;
	226
	227	if (!proc_net_devsnmp6)
	228	return -ENOENT;
	229
	230	p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
	231	if (!p)
	232	return -ENOMEM;
	233
	234	p->data = idev;
	235	p->proc_fops = &snmp6_seq_fops;
	236
	237	idev->stats.proc_dir_entry = p;
	238	return 0;
	239	}
	240
	241	int snmp6_unregister_dev(struct inet6_dev *idev)
	242	{
	243	if (!proc_net_devsnmp6)
	244	return -ENOENT;
	245	if (!idev \|\| !idev->stats.proc_dir_entry)
	246	return -EINVAL;
	247	remove_proc_entry(idev->stats.proc_dir_entry->name,
	248	proc_net_devsnmp6);
5632c515	249	idev->stats.proc_dir_entry = NULL;
1da177e4 LT	250	return 0;
	251	}
	252
	253	int __init ipv6_misc_proc_init(void)
	254	{
	255	int rc = 0;
	256
457c4cbc	257	if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops))
1da177e4 LT	258	goto proc_snmp6_fail;
1da177e4 LT	259
457c4cbc	260	proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net);
1da177e4 LT	261	if (!proc_net_devsnmp6)
	262	goto proc_dev_snmp6_fail;
	263
457c4cbc	264	if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops))
1da177e4 LT	265	goto proc_sockstat6_fail;
	266	out:
	267	return rc;
	268
	269	proc_sockstat6_fail:
457c4cbc	270	proc_net_remove(&init_net, "dev_snmp6");
1da177e4	271	proc_dev_snmp6_fail:
457c4cbc	272	proc_net_remove(&init_net, "snmp6");
1da177e4 LT	273	proc_snmp6_fail:
	274	rc = -ENOMEM;
	275	goto out;
	276	}
	277
	278	void ipv6_misc_proc_exit(void)
	279	{
457c4cbc EB	280	proc_net_remove(&init_net, "sockstat6");
	281	proc_net_remove(&init_net, "dev_snmp6");
	282	proc_net_remove(&init_net, "snmp6");
1da177e4 LT	283	}
1da177e4 LT	284