[mirror_ubuntu-jammy-kernel.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>

#define MAX4(a, b, c, d) \
	max_t(u32, max_t(u32, a, b), max_t(u32, c, d))
#define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \
			IPSTATS_MIB_MAX, ICMP_MIB_MAX)

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

	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 %lu\n",
		   atomic_read(&net->ipv6.frags.rhashtable.nelems),
		   frag_mem_limit(&net->ipv6.frags));
	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 = {
	.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)
{
	unsigned long buff[SNMP_MIB_MAX];
	int i;

	if (pcpumib) {
		memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX);

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

static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
				  const struct snmp_mib *itemlist, size_t syncpoff)
{
	u64 buff64[SNMP_MIB_MAX];
	int i;

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

	snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff);
	for (i = 0; itemlist[i].name; i++)
		seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
}

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 = {
	.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;
}

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_single_data(idev->dev->name, 0444,
			net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, 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", 0444, net->proc_net,
			 &sockstat6_seq_fops))
		return -ENOMEM;

	if (!proc_create("snmp6", 0444, 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
4a4857b1 JH	33	#define MAX4(a, b, c, d) \
	34	max_t(u32, max_t(u32, a, b), max_t(u32, c, d))
	35	#define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \
	36	IPSTATS_MIB_MAX, ICMP_MIB_MAX)
	37
1da177e4 LT	38	static int sockstat6_seq_show(struct seq_file seq, void v)
1da177e4 LT	39	{
dfb12eb7 PE	40	struct net *net = seq->private;
dfb12eb7 PE	41
1da177e4	42	seq_printf(seq, "TCP6: inuse %d\n",
dfb12eb7	43	sock_prot_inuse_get(net, &tcpv6_prot));
1da177e4	44	seq_printf(seq, "UDP6: inuse %d\n",
dfb12eb7	45	sock_prot_inuse_get(net, &udpv6_prot));
ba4e58ec	46	seq_printf(seq, "UDPLITE6: inuse %d\n",
dfb12eb7	47	sock_prot_inuse_get(net, &udplitev6_prot));
1da177e4	48	seq_printf(seq, "RAW6: inuse %d\n",
dfb12eb7	49	sock_prot_inuse_get(net, &rawv6_prot));
3e67f106	50	seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
6befe4a7 ED	51	atomic_read(&net->ipv6.frags.rhashtable.nelems),
6befe4a7 ED	52	frag_mem_limit(&net->ipv6.frags));
1da177e4 LT	53	return 0;
	54	}
	55
35f0a5df DL	56	static int sockstat6_seq_open(struct inode inode, struct file file)
	57	{
	58	return single_open_net(inode, file, sockstat6_seq_show);
	59	}
	60
	61	static const struct file_operations sockstat6_seq_fops = {
35f0a5df DL	62	.open = sockstat6_seq_open,
	63	.read = seq_read,
	64	.llseek = seq_lseek,
	65	.release = single_release_net,
	66	};
	67
5833929c	68	static const struct snmp_mib snmp6_ipstats_list[] = {
1da177e4	69	/* ipv6 mib according to RFC 2465 */
edf391ff	70	SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
1da177e4 LT	71	SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	72	SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
	73	SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
	74	SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	75	SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	76	SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	77	SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
	78	SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
	79	SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
edf391ff	80	SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
1da177e4 LT	81	SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	82	SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	83	SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	84	SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
	85	SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
	86	SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
	87	SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
	88	SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
	89	SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
	90	SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	91	SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
edf391ff NH	92	SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
	93	SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
	94	SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
	95	SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
	96	SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
	97	SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
fda3f402	98	/* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
1f07d03e ED	99	SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
	100	SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
	101	SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
	102	SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
1da177e4 LT	103	SNMP_MIB_SENTINEL
	104	};
	105
5833929c	106	static const struct snmp_mib snmp6_icmp6_list[] = {
14878f75	107	/* icmpv6 mib according to RFC 2466 */
1da177e4 LT	108	SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
1da177e4 LT	109	SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
1da177e4	110	SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
1f8438a8	111	SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
6a5dc9e5	112	SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
1da177e4 LT	113	SNMP_MIB_SENTINEL
	114	};
	115
14878f75	116	/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
36cbd3dc	117	static const char *const icmp6type2name[256] = {
14878f75 DS	118	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
	119	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
	120	[ICMPV6_TIME_EXCEED] = "TimeExcds",
	121	[ICMPV6_PARAMPROB] = "ParmProblems",
fa95c283	122	[ICMPV6_ECHO_REQUEST] = "Echos",
14878f75 DS	123	[ICMPV6_ECHO_REPLY] = "EchoReplies",
	124	[ICMPV6_MGM_QUERY] = "GroupMembQueries",
	125	[ICMPV6_MGM_REPORT] = "GroupMembResponses",
	126	[ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
	127	[ICMPV6_MLD2_REPORT] = "MLDv2Reports",
	128	[NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
	129	[NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
	130	[NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
	131	[NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
fa95c283	132	[NDISC_REDIRECT] = "Redirects",
14878f75 DS	133	};
	134
	135
5833929c	136	static const struct snmp_mib snmp6_udp6_list[] = {
1da177e4 LT	137	SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
	138	SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
	139	SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
	140	SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
870be392 ED	141	SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
870be392 ED	142	SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5	143	SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
36cbb245	144	SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
1da177e4 LT	145	SNMP_MIB_SENTINEL
	146	};
	147
5833929c	148	static const struct snmp_mib snmp6_udplite6_list[] = {
ba4e58ec GR	149	SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
	150	SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
	151	SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
	152	SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
870be392 ED	153	SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
870be392 ED	154	SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5	155	SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
ba4e58ec GR	156	SNMP_MIB_SENTINEL
	157	};
	158
2a24444f	159	static void snmp6_seq_show_icmpv6msg(struct seq_file seq, atomic_long_t smib)
14878f75	160	{
5ece6c2d	161	char name[32];
14878f75 DS	162	int i;
	163
	164	/* print by name -- deprecated items */
	165	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	166	int icmptype;
36cbd3dc	167	const char *p;
14878f75 DS	168
	169	icmptype = i & 0xff;
	170	p = icmp6type2name[icmptype];
	171	if (!p) /* don't print un-named types here */
	172	continue;
5ece6c2d	173	snprintf(name, sizeof(name), "Icmp6%s%s",
14878f75 DS	174	i & 0x100 ? "Out" : "In", p);
14878f75 DS	175	seq_printf(seq, "%-32s\t%lu\n", name,
2a24444f	176	atomic_long_read(smib + i));
14878f75 DS	177	}
	178
	179	/* print by number (nonzero only) - ICMPMsgStat format */
	180	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	181	unsigned long val;
	182
2a24444f	183	val = atomic_long_read(smib + i);
14878f75 DS	184	if (!val)
14878f75 DS	185	continue;
5ece6c2d	186	snprintf(name, sizeof(name), "Icmp6%sType%u",
14878f75 DS	187	i & 0x100 ? "Out" : "In", i & 0xff);
	188	seq_printf(seq, "%-32s\t%lu\n", name, val);
	189	}
14878f75 DS	190	}
14878f75 DS	191
be281e55 ED	192	/* can be called either with percpu mib (pcpumib != NULL),
	193	* or shared one (smib != NULL)
	194	*/
c9f2dba6	195	static void snmp6_seq_show_item(struct seq_file seq, void __percpu pcpumib,
be281e55	196	atomic_long_t *smib,
5833929c	197	const struct snmp_mib *itemlist)
1da177e4	198	{
4a4857b1	199	unsigned long buff[SNMP_MIB_MAX];
1da177e4	200	int i;
4ce3c183	201
4a4857b1 JH	202	if (pcpumib) {
	203	memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX);
	204
	205	snmp_get_cpu_field_batch(buff, itemlist, pcpumib);
	206	for (i = 0; itemlist[i].name; i++)
	207	seq_printf(seq, "%-32s\t%lu\n",
	208	itemlist[i].name, buff[i]);
	209	} else {
	210	for (i = 0; itemlist[i].name; i++)
	211	seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
	212	atomic_long_read(smib + itemlist[i].entry));
be281e55	213	}
1da177e4 LT	214	}
1da177e4 LT	215
698365fa	216	static void snmp6_seq_show_item64(struct seq_file seq, void __percpu mib,
4ce3c183 ED	217	const struct snmp_mib *itemlist, size_t syncpoff)
4ce3c183 ED	218	{
4a4857b1	219	u64 buff64[SNMP_MIB_MAX];
4ce3c183 ED	220	int i;
4ce3c183 ED	221
3500cd73	222	memset(buff64, 0, sizeof(u64) * SNMP_MIB_MAX);
4a4857b1 JH	223
4a4857b1 JH	224	snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff);
4ce3c183	225	for (i = 0; itemlist[i].name; i++)
4a4857b1	226	seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
4ce3c183 ED	227	}
4ce3c183 ED	228
1da177e4 LT	229	static int snmp6_seq_show(struct seq_file seq, void v)
1da177e4 LT	230	{
2b4209e4 DL	231	struct net net = (struct net )seq->private;
2b4209e4 DL	232
698365fa	233	snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
4ce3c183	234	snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
c9f2dba6	235	snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
be281e55	236	NULL, snmp6_icmp6_list);
2a24444f	237	snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
c9f2dba6	238	snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
be281e55	239	NULL, snmp6_udp6_list);
c9f2dba6	240	snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
be281e55	241	NULL, snmp6_udplite6_list);
1da177e4 LT	242	return 0;
	243	}
	244
1da177e4 LT	245	static int snmp6_seq_open(struct inode inode, struct file file)
1da177e4 LT	246	{
2b4209e4	247	return single_open_net(inode, file, snmp6_seq_show);
1da177e4 LT	248	}
1da177e4 LT	249
9a32144e	250	static const struct file_operations snmp6_seq_fops = {
1da177e4 LT	251	.open = snmp6_seq_open,
	252	.read = seq_read,
	253	.llseek = seq_lseek,
2b4209e4	254	.release = single_release_net,
1da177e4 LT	255	};
1da177e4 LT	256
7b43ccec DL	257	static int snmp6_dev_seq_show(struct seq_file seq, void v)
	258	{
	259	struct inet6_dev idev = (struct inet6_dev )seq->private;
	260
	261	seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
698365fa	262	snmp6_seq_show_item64(seq, idev->stats.ipv6,
766e9f1b	263	snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
be281e55	264	snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
7d720c3e	265	snmp6_icmp6_list);
2a24444f	266	snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
7b43ccec DL	267	return 0;
	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
3f3942ac CH	282	p = proc_create_single_data(idev->dev->name, 0444,
3f3942ac CH	283	net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, idev);
1da177e4 LT	284	if (!p)
	285	return -ENOMEM;
	286
1da177e4 LT	287	idev->stats.proc_dir_entry = p;
	288	return 0;
	289	}
	290
	291	int snmp6_unregister_dev(struct inet6_dev *idev)
	292	{
835bcc04 DL	293	struct net *net = dev_net(idev->dev);
835bcc04 DL	294	if (!net->mib.proc_net_devsnmp6)
1da177e4	295	return -ENOENT;
c3f6c21d	296	if (!idev->stats.proc_dir_entry)
1da177e4	297	return -EINVAL;
a8ca16ea	298	proc_remove(idev->stats.proc_dir_entry);
5632c515	299	idev->stats.proc_dir_entry = NULL;
1da177e4 LT	300	return 0;
	301	}
	302
2c8c1e72	303	static int __net_init ipv6_proc_init_net(struct net *net)
d0538ca3	304	{
d6444062	305	if (!proc_create("sockstat6", 0444, net->proc_net,
d4beaa66	306	&sockstat6_seq_fops))
d0538ca3	307	return -ENOMEM;
06f38527	308
d6444062	309	if (!proc_create("snmp6", 0444, net->proc_net, &snmp6_seq_fops))
06f38527 DL	310	goto proc_snmp6_fail;
	311
	312	net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
	313	if (!net->mib.proc_net_devsnmp6)
	314	goto proc_dev_snmp6_fail;
d0538ca3	315	return 0;
06f38527	316
4855d6f3	317	proc_dev_snmp6_fail:
ece31ffd	318	remove_proc_entry("snmp6", net->proc_net);
06f38527	319	proc_snmp6_fail:
ece31ffd	320	remove_proc_entry("sockstat6", net->proc_net);
06f38527	321	return -ENOMEM;
d0538ca3 PE	322	}
d0538ca3 PE	323
2c8c1e72	324	static void __net_exit ipv6_proc_exit_net(struct net *net)
d0538ca3	325	{
ece31ffd G	326	remove_proc_entry("sockstat6", net->proc_net);
	327	remove_proc_entry("dev_snmp6", net->proc_net);
	328	remove_proc_entry("snmp6", net->proc_net);
d0538ca3 PE	329	}
	330
	331	static struct pernet_operations ipv6_proc_ops = {
	332	.init = ipv6_proc_init_net,
	333	.exit = ipv6_proc_exit_net,
	334	};
	335
1da177e4 LT	336	int __init ipv6_misc_proc_init(void)
1da177e4 LT	337	{
06f38527	338	return register_pernet_subsys(&ipv6_proc_ops);
1da177e4 LT	339	}
	340
	341	void ipv6_misc_proc_exit(void)
	342	{
d0538ca3	343	unregister_pernet_subsys(&ipv6_proc_ops);
1da177e4	344	}