[linux-block.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.
 *
 * 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 <linux/export.h>
#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/transp_v6.h>
#include <net/ipv6.h>

static int sockstat6_seq_show(struct seq_file *seq, void *v)
{
	struct net *net = seq->private;
	unsigned int frag_mem = ip6_frag_mem(net);

	seq_printf(seq, "TCP6: inuse %d\n",
		       sock_prot_inuse_get(net, &tcpv6_prot));
	seq_printf(seq, "UDP6: inuse %d\n",
		       sock_prot_inuse_get(net, &udpv6_prot));
	seq_printf(seq, "UDPLITE6: inuse %d\n",
			sock_prot_inuse_get(net, &udplitev6_prot));
	seq_printf(seq, "RAW6: inuse %d\n",
		       sock_prot_inuse_get(net, &rawv6_prot));
	seq_printf(seq, "FRAG6: inuse %u memory %u\n", !!frag_mem, frag_mem);
	return 0;
}

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

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

static const struct snmp_mib snmp6_ipstats_list[] = {
/* ipv6 mib according to RFC 2465 */
	SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
	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_OUTPKTS),
	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_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
	SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
	SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
	SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
	SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
	SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
	/* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
	SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
	SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
	SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
	SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
	SNMP_MIB_SENTINEL
};

static const 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_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
	SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
	SNMP_MIB_SENTINEL
};

/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
static const char *const icmp6type2name[256] = {
	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
	[ICMPV6_TIME_EXCEED] = "TimeExcds",
	[ICMPV6_PARAMPROB] = "ParmProblems",
	[ICMPV6_ECHO_REQUEST] = "Echos",
	[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] = "Redirects",
};


static const 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_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
	SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
	SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
	SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
	SNMP_MIB_SENTINEL
};

static const 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_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
	SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
	SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
	SNMP_MIB_SENTINEL
};

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

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

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

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

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

/* can be called either with percpu mib (pcpumib != NULL),
 * or shared one (smib != NULL)
 */
static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib,
				atomic_long_t *smib,
				const struct snmp_mib *itemlist)
{
	int i;
	unsigned long val;

	for (i = 0; itemlist[i].name; i++) {
		val = pcpumib ?
			snmp_fold_field(pcpumib, itemlist[i].entry) :
			atomic_long_read(smib + itemlist[i].entry);
		seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val);
	}
}

static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
				  const struct snmp_mib *itemlist, size_t syncpoff)
{
	int i;

	for (i = 0; itemlist[i].name; i++)
		seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name,
			   snmp_fold_field64(mib, itemlist[i].entry, syncpoff));
}

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

	snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
			    snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
	snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
			    NULL, snmp6_icmp6_list);
	snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
	snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
			    NULL, snmp6_udp6_list);
	snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
			    NULL, snmp6_udplite6_list);
	return 0;
}

static int snmp6_seq_open(struct inode *inode, struct file *file)
{
	return single_open_net(inode, file, snmp6_seq_show);
}

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

static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
{
	struct inet6_dev *idev = (struct inet6_dev *)seq->private;

	seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
	snmp6_seq_show_item64(seq, idev->stats.ipv6,
			    snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
	snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
			    snmp6_icmp6_list);
	snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
	return 0;
}

static int snmp6_dev_seq_open(struct inode *inode, struct file *file)
{
	return single_open(file, snmp6_dev_seq_show, PDE_DATA(inode));
}

static const struct file_operations snmp6_dev_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = snmp6_dev_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release,
};

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

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

	net = dev_net(idev->dev);
	if (!net->mib.proc_net_devsnmp6)
		return -ENOENT;

	p = proc_create_data(idev->dev->name, S_IRUGO,
			     net->mib.proc_net_devsnmp6,
			     &snmp6_dev_seq_fops, idev);
	if (!p)
		return -ENOMEM;

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

int snmp6_unregister_dev(struct inet6_dev *idev)
{
	struct net *net = dev_net(idev->dev);
	if (!net->mib.proc_net_devsnmp6)
		return -ENOENT;
	if (!idev->stats.proc_dir_entry)
		return -EINVAL;
	proc_remove(idev->stats.proc_dir_entry);
	idev->stats.proc_dir_entry = NULL;
	return 0;
}

static int __net_init ipv6_proc_init_net(struct net *net)
{
	if (!proc_create("sockstat6", S_IRUGO, net->proc_net,
			 &sockstat6_seq_fops))
		return -ENOMEM;

	if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
		goto proc_snmp6_fail;

	net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
	if (!net->mib.proc_net_devsnmp6)
		goto proc_dev_snmp6_fail;
	return 0;

proc_dev_snmp6_fail:
	remove_proc_entry("snmp6", net->proc_net);
proc_snmp6_fail:
	remove_proc_entry("sockstat6", net->proc_net);
	return -ENOMEM;
}

static void __net_exit ipv6_proc_exit_net(struct net *net)
{
	remove_proc_entry("sockstat6", net->proc_net);
	remove_proc_entry("dev_snmp6", net->proc_net);
	remove_proc_entry("snmp6", net->proc_net);
}

static struct pernet_operations ipv6_proc_ops = {
	.init = ipv6_proc_init_net,
	.exit = ipv6_proc_exit_net,
};

int __init ipv6_misc_proc_init(void)
{
	return register_pernet_subsys(&ipv6_proc_ops);
}

void ipv6_misc_proc_exit(void)
{
	unregister_pernet_subsys(&ipv6_proc_ops);
}
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	*
1da177e4	10	* Authors: David S. Miller (davem@caip.rutgers.edu)
67ba4152	11	* YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
1da177e4 LT	12	*
	13	* This program is free software; you can redistribute it and/or
	14	* modify it under the terms of the GNU General Public License
	15	* as published by the Free Software Foundation; either version
	16	* 2 of the License, or (at your option) any later version.
	17	*/
1da177e4 LT	18	#include <linux/socket.h>
	19	#include <linux/net.h>
	20	#include <linux/ipv6.h>
	21	#include <linux/proc_fs.h>
	22	#include <linux/seq_file.h>
	23	#include <linux/stddef.h>
bc3b2d7f	24	#include <linux/export.h>
457c4cbc	25	#include <net/net_namespace.h>
7f7d9a6b	26	#include <net/ip.h>
1da177e4 LT	27	#include <net/sock.h>
1da177e4 LT	28	#include <net/tcp.h>
1781f7f5	29	#include <net/udp.h>
1da177e4 LT	30	#include <net/transp_v6.h>
	31	#include <net/ipv6.h>
	32
1da177e4 LT	33	static int sockstat6_seq_show(struct seq_file seq, void v)
1da177e4 LT	34	{
dfb12eb7	35	struct net *net = seq->private;
434d3054	36	unsigned int frag_mem = ip6_frag_mem(net);
dfb12eb7	37
1da177e4	38	seq_printf(seq, "TCP6: inuse %d\n",
dfb12eb7	39	sock_prot_inuse_get(net, &tcpv6_prot));
1da177e4	40	seq_printf(seq, "UDP6: inuse %d\n",
dfb12eb7	41	sock_prot_inuse_get(net, &udpv6_prot));
ba4e58ec	42	seq_printf(seq, "UDPLITE6: inuse %d\n",
dfb12eb7	43	sock_prot_inuse_get(net, &udplitev6_prot));
1da177e4	44	seq_printf(seq, "RAW6: inuse %d\n",
dfb12eb7	45	sock_prot_inuse_get(net, &rawv6_prot));
434d3054	46	seq_printf(seq, "FRAG6: inuse %u memory %u\n", !!frag_mem, frag_mem);
1da177e4 LT	47	return 0;
	48	}
	49
35f0a5df DL	50	static int sockstat6_seq_open(struct inode inode, struct file file)
	51	{
	52	return single_open_net(inode, file, sockstat6_seq_show);
	53	}
	54
	55	static const struct file_operations sockstat6_seq_fops = {
	56	.owner = THIS_MODULE,
	57	.open = sockstat6_seq_open,
	58	.read = seq_read,
	59	.llseek = seq_lseek,
	60	.release = single_release_net,
	61	};
	62
5833929c	63	static const struct snmp_mib snmp6_ipstats_list[] = {
1da177e4	64	/* ipv6 mib according to RFC 2465 */
edf391ff	65	SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
1da177e4 LT	66	SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	67	SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
	68	SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
	69	SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	70	SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	71	SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	72	SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
	73	SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
	74	SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
edf391ff	75	SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
1da177e4 LT	76	SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	77	SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	78	SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	79	SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
	80	SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
	81	SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
	82	SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
	83	SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
	84	SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
	85	SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	86	SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
edf391ff NH	87	SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
	88	SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
	89	SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
	90	SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
	91	SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
	92	SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
fda3f402	93	/* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
1f07d03e ED	94	SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
	95	SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
	96	SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
	97	SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
1da177e4 LT	98	SNMP_MIB_SENTINEL
	99	};
	100
5833929c	101	static const struct snmp_mib snmp6_icmp6_list[] = {
14878f75	102	/* icmpv6 mib according to RFC 2466 */
1da177e4 LT	103	SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
1da177e4 LT	104	SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
1da177e4	105	SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
1f8438a8	106	SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
6a5dc9e5	107	SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
1da177e4 LT	108	SNMP_MIB_SENTINEL
	109	};
	110
14878f75	111	/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
36cbd3dc	112	static const char *const icmp6type2name[256] = {
14878f75 DS	113	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
	114	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
	115	[ICMPV6_TIME_EXCEED] = "TimeExcds",
	116	[ICMPV6_PARAMPROB] = "ParmProblems",
fa95c283	117	[ICMPV6_ECHO_REQUEST] = "Echos",
14878f75 DS	118	[ICMPV6_ECHO_REPLY] = "EchoReplies",
	119	[ICMPV6_MGM_QUERY] = "GroupMembQueries",
	120	[ICMPV6_MGM_REPORT] = "GroupMembResponses",
	121	[ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
	122	[ICMPV6_MLD2_REPORT] = "MLDv2Reports",
	123	[NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
	124	[NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
	125	[NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
	126	[NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
fa95c283	127	[NDISC_REDIRECT] = "Redirects",
14878f75 DS	128	};
	129
	130
5833929c	131	static const struct snmp_mib snmp6_udp6_list[] = {
1da177e4 LT	132	SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
	133	SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
	134	SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
	135	SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
870be392 ED	136	SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
870be392 ED	137	SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5	138	SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
36cbb245	139	SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
1da177e4 LT	140	SNMP_MIB_SENTINEL
	141	};
	142
5833929c	143	static const struct snmp_mib snmp6_udplite6_list[] = {
ba4e58ec GR	144	SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
	145	SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
	146	SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
	147	SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
870be392 ED	148	SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
870be392 ED	149	SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5	150	SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
ba4e58ec GR	151	SNMP_MIB_SENTINEL
	152	};
	153
2a24444f	154	static void snmp6_seq_show_icmpv6msg(struct seq_file seq, atomic_long_t smib)
14878f75	155	{
5ece6c2d	156	char name[32];
14878f75 DS	157	int i;
	158
	159	/* print by name -- deprecated items */
	160	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	161	int icmptype;
36cbd3dc	162	const char *p;
14878f75 DS	163
	164	icmptype = i & 0xff;
	165	p = icmp6type2name[icmptype];
	166	if (!p) /* don't print un-named types here */
	167	continue;
5ece6c2d	168	snprintf(name, sizeof(name), "Icmp6%s%s",
14878f75 DS	169	i & 0x100 ? "Out" : "In", p);
14878f75 DS	170	seq_printf(seq, "%-32s\t%lu\n", name,
2a24444f	171	atomic_long_read(smib + i));
14878f75 DS	172	}
	173
	174	/* print by number (nonzero only) - ICMPMsgStat format */
	175	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	176	unsigned long val;
	177
2a24444f	178	val = atomic_long_read(smib + i);
14878f75 DS	179	if (!val)
14878f75 DS	180	continue;
5ece6c2d	181	snprintf(name, sizeof(name), "Icmp6%sType%u",
14878f75 DS	182	i & 0x100 ? "Out" : "In", i & 0xff);
	183	seq_printf(seq, "%-32s\t%lu\n", name, val);
	184	}
14878f75 DS	185	}
14878f75 DS	186
be281e55 ED	187	/* can be called either with percpu mib (pcpumib != NULL),
	188	* or shared one (smib != NULL)
	189	*/
c9f2dba6	190	static void snmp6_seq_show_item(struct seq_file seq, void __percpu pcpumib,
be281e55	191	atomic_long_t *smib,
5833929c	192	const struct snmp_mib *itemlist)
1da177e4 LT	193	{
1da177e4 LT	194	int i;
be281e55	195	unsigned long val;
4ce3c183	196
be281e55 ED	197	for (i = 0; itemlist[i].name; i++) {
	198	val = pcpumib ?
	199	snmp_fold_field(pcpumib, itemlist[i].entry) :
	200	atomic_long_read(smib + itemlist[i].entry);
	201	seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val);
	202	}
1da177e4 LT	203	}
1da177e4 LT	204
698365fa	205	static void snmp6_seq_show_item64(struct seq_file seq, void __percpu mib,
4ce3c183 ED	206	const struct snmp_mib *itemlist, size_t syncpoff)
	207	{
	208	int i;
	209
	210	for (i = 0; itemlist[i].name; i++)
	211	seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name,
	212	snmp_fold_field64(mib, itemlist[i].entry, syncpoff));
	213	}
	214
1da177e4 LT	215	static int snmp6_seq_show(struct seq_file seq, void v)
1da177e4 LT	216	{
2b4209e4 DL	217	struct net net = (struct net )seq->private;
2b4209e4 DL	218
698365fa	219	snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
4ce3c183	220	snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
c9f2dba6	221	snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
be281e55	222	NULL, snmp6_icmp6_list);
2a24444f	223	snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
c9f2dba6	224	snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
be281e55	225	NULL, snmp6_udp6_list);
c9f2dba6	226	snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
be281e55	227	NULL, snmp6_udplite6_list);
1da177e4 LT	228	return 0;
	229	}
	230
1da177e4 LT	231	static int snmp6_seq_open(struct inode inode, struct file file)
1da177e4 LT	232	{
2b4209e4	233	return single_open_net(inode, file, snmp6_seq_show);
1da177e4 LT	234	}
1da177e4 LT	235
9a32144e	236	static const struct file_operations snmp6_seq_fops = {
1da177e4 LT	237	.owner = THIS_MODULE,
	238	.open = snmp6_seq_open,
	239	.read = seq_read,
	240	.llseek = seq_lseek,
2b4209e4	241	.release = single_release_net,
1da177e4 LT	242	};
1da177e4 LT	243
7b43ccec DL	244	static int snmp6_dev_seq_show(struct seq_file seq, void v)
	245	{
	246	struct inet6_dev idev = (struct inet6_dev )seq->private;
	247
	248	seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
698365fa	249	snmp6_seq_show_item64(seq, idev->stats.ipv6,
766e9f1b	250	snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
be281e55	251	snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
7d720c3e	252	snmp6_icmp6_list);
2a24444f	253	snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
7b43ccec DL	254	return 0;
	255	}
	256
	257	static int snmp6_dev_seq_open(struct inode inode, struct file file)
	258	{
d9dda78b	259	return single_open(file, snmp6_dev_seq_show, PDE_DATA(inode));
7b43ccec DL	260	}
	261
	262	static const struct file_operations snmp6_dev_seq_fops = {
	263	.owner = THIS_MODULE,
	264	.open = snmp6_dev_seq_open,
	265	.read = seq_read,
	266	.llseek = seq_lseek,
	267	.release = single_release,
	268	};
	269
1da177e4 LT	270	int snmp6_register_dev(struct inet6_dev *idev)
	271	{
	272	struct proc_dir_entry *p;
835bcc04	273	struct net *net;
1da177e4 LT	274
	275	if (!idev \|\| !idev->dev)
	276	return -EINVAL;
	277
835bcc04	278	net = dev_net(idev->dev);
835bcc04	279	if (!net->mib.proc_net_devsnmp6)
1da177e4 LT	280	return -ENOENT;
1da177e4 LT	281
0bb53a66	282	p = proc_create_data(idev->dev->name, S_IRUGO,
7b43ccec DL	283	net->mib.proc_net_devsnmp6,
7b43ccec DL	284	&snmp6_dev_seq_fops, idev);
1da177e4 LT	285	if (!p)
	286	return -ENOMEM;
	287
1da177e4 LT	288	idev->stats.proc_dir_entry = p;
	289	return 0;
	290	}
	291
	292	int snmp6_unregister_dev(struct inet6_dev *idev)
	293	{
835bcc04 DL	294	struct net *net = dev_net(idev->dev);
835bcc04 DL	295	if (!net->mib.proc_net_devsnmp6)
1da177e4	296	return -ENOENT;
c3f6c21d	297	if (!idev->stats.proc_dir_entry)
1da177e4	298	return -EINVAL;
a8ca16ea	299	proc_remove(idev->stats.proc_dir_entry);
5632c515	300	idev->stats.proc_dir_entry = NULL;
1da177e4 LT	301	return 0;
	302	}
	303
2c8c1e72	304	static int __net_init ipv6_proc_init_net(struct net *net)
d0538ca3	305	{
d4beaa66 G	306	if (!proc_create("sockstat6", S_IRUGO, net->proc_net,
d4beaa66 G	307	&sockstat6_seq_fops))
d0538ca3	308	return -ENOMEM;
06f38527	309
d4beaa66	310	if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
06f38527 DL	311	goto proc_snmp6_fail;
	312
	313	net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
	314	if (!net->mib.proc_net_devsnmp6)
	315	goto proc_dev_snmp6_fail;
d0538ca3	316	return 0;
06f38527	317
4855d6f3	318	proc_dev_snmp6_fail:
ece31ffd	319	remove_proc_entry("snmp6", net->proc_net);
06f38527	320	proc_snmp6_fail:
ece31ffd	321	remove_proc_entry("sockstat6", net->proc_net);
06f38527	322	return -ENOMEM;
d0538ca3 PE	323	}
d0538ca3 PE	324
2c8c1e72	325	static void __net_exit ipv6_proc_exit_net(struct net *net)
d0538ca3	326	{
ece31ffd G	327	remove_proc_entry("sockstat6", net->proc_net);
	328	remove_proc_entry("dev_snmp6", net->proc_net);
	329	remove_proc_entry("snmp6", net->proc_net);
d0538ca3 PE	330	}
	331
	332	static struct pernet_operations ipv6_proc_ops = {
	333	.init = ipv6_proc_init_net,
	334	.exit = ipv6_proc_exit_net,
	335	};
	336
1da177e4 LT	337	int __init ipv6_misc_proc_init(void)
1da177e4 LT	338	{
06f38527	339	return register_pernet_subsys(&ipv6_proc_ops);
1da177e4 LT	340	}
	341
	342	void ipv6_misc_proc_exit(void)
	343	{
d0538ca3	344	unregister_pernet_subsys(&ipv6_proc_ops);
1da177e4 LT	345	}
1da177e4 LT	346