[mirror_ubuntu-jammy-kernel.git] / net / ipv6 / proc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * 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>
 */
#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.fqdir->rhashtable.nelems),
		   frag_mem_limit(net->ipv6.fqdir));
	return 0;
}

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_ITEM("Udp6MemErrors", UDP_MIB_MEMERRORS),
	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_ITEM("UdpLite6MemErrors", UDP_MIB_MEMERRORS),
	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_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_net_single("sockstat6", 0444, net->proc_net,
			sockstat6_seq_show, NULL))
		return -ENOMEM;

	if (!proc_create_net_single("snmp6", 0444, net->proc_net,
			snmp6_seq_show, NULL))
		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
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* INET An implementation of the TCP/IP protocol suite for the LINUX
	4	* operating system. INET is implemented using the BSD Socket
	5	* interface as the means of communication with the user level.
	6	*
	7	* This file implements the various access functions for the
	8	* PROC file system. This is very similar to the IPv4 version,
	9	* except it reports the sockets in the INET6 address family.
	10	*
1da177e4	11	* Authors: David S. Miller (davem@caip.rutgers.edu)
67ba4152	12	* YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
1da177e4	13	*/
1da177e4 LT	14	#include <linux/socket.h>
	15	#include <linux/net.h>
	16	#include <linux/ipv6.h>
	17	#include <linux/proc_fs.h>
	18	#include <linux/seq_file.h>
	19	#include <linux/stddef.h>
bc3b2d7f	20	#include <linux/export.h>
457c4cbc	21	#include <net/net_namespace.h>
7f7d9a6b	22	#include <net/ip.h>
1da177e4 LT	23	#include <net/sock.h>
1da177e4 LT	24	#include <net/tcp.h>
1781f7f5	25	#include <net/udp.h>
1da177e4 LT	26	#include <net/transp_v6.h>
	27	#include <net/ipv6.h>
	28
4a4857b1 JH	29	#define MAX4(a, b, c, d) \
	30	max_t(u32, max_t(u32, a, b), max_t(u32, c, d))
	31	#define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \
	32	IPSTATS_MIB_MAX, ICMP_MIB_MAX)
	33
1da177e4 LT	34	static int sockstat6_seq_show(struct seq_file seq, void v)
1da177e4 LT	35	{
dfb12eb7 PE	36	struct net *net = seq->private;
dfb12eb7 PE	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));
3e67f106	46	seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
4907abc6 ED	47	atomic_read(&net->ipv6.fqdir->rhashtable.nelems),
4907abc6 ED	48	frag_mem_limit(net->ipv6.fqdir));
1da177e4 LT	49	return 0;
	50	}
	51
5833929c	52	static const struct snmp_mib snmp6_ipstats_list[] = {
1da177e4	53	/* ipv6 mib according to RFC 2465 */
edf391ff	54	SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
1da177e4 LT	55	SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
	56	SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
	57	SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
	58	SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
	59	SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
	60	SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
	61	SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
	62	SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
	63	SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
edf391ff	64	SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
1da177e4 LT	65	SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
	66	SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
	67	SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
	68	SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
	69	SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
	70	SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
	71	SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
	72	SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
	73	SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
	74	SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
	75	SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
edf391ff NH	76	SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
	77	SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
	78	SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
	79	SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
	80	SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
	81	SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
fda3f402	82	/* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
1f07d03e ED	83	SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
	84	SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
	85	SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
	86	SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
1da177e4 LT	87	SNMP_MIB_SENTINEL
	88	};
	89
5833929c	90	static const struct snmp_mib snmp6_icmp6_list[] = {
14878f75	91	/* icmpv6 mib according to RFC 2466 */
1da177e4 LT	92	SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
1da177e4 LT	93	SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
1da177e4	94	SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
1f8438a8	95	SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
6a5dc9e5	96	SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
1da177e4 LT	97	SNMP_MIB_SENTINEL
	98	};
	99
14878f75	100	/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
36cbd3dc	101	static const char *const icmp6type2name[256] = {
14878f75 DS	102	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
	103	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
	104	[ICMPV6_TIME_EXCEED] = "TimeExcds",
	105	[ICMPV6_PARAMPROB] = "ParmProblems",
fa95c283	106	[ICMPV6_ECHO_REQUEST] = "Echos",
14878f75 DS	107	[ICMPV6_ECHO_REPLY] = "EchoReplies",
	108	[ICMPV6_MGM_QUERY] = "GroupMembQueries",
	109	[ICMPV6_MGM_REPORT] = "GroupMembResponses",
	110	[ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
	111	[ICMPV6_MLD2_REPORT] = "MLDv2Reports",
	112	[NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
	113	[NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
	114	[NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
	115	[NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
fa95c283	116	[NDISC_REDIRECT] = "Redirects",
14878f75 DS	117	};
	118
	119
5833929c	120	static const struct snmp_mib snmp6_udp6_list[] = {
1da177e4 LT	121	SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
	122	SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
	123	SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
	124	SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
870be392 ED	125	SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
870be392 ED	126	SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5	127	SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
36cbb245	128	SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
a3ce2b10	129	SNMP_MIB_ITEM("Udp6MemErrors", UDP_MIB_MEMERRORS),
1da177e4 LT	130	SNMP_MIB_SENTINEL
	131	};
	132
5833929c	133	static const struct snmp_mib snmp6_udplite6_list[] = {
ba4e58ec GR	134	SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
	135	SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
	136	SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
	137	SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
870be392 ED	138	SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
870be392 ED	139	SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5	140	SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
a3ce2b10	141	SNMP_MIB_ITEM("UdpLite6MemErrors", UDP_MIB_MEMERRORS),
ba4e58ec GR	142	SNMP_MIB_SENTINEL
	143	};
	144
2a24444f	145	static void snmp6_seq_show_icmpv6msg(struct seq_file seq, atomic_long_t smib)
14878f75	146	{
5ece6c2d	147	char name[32];
14878f75 DS	148	int i;
	149
	150	/* print by name -- deprecated items */
	151	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	152	int icmptype;
36cbd3dc	153	const char *p;
14878f75 DS	154
	155	icmptype = i & 0xff;
	156	p = icmp6type2name[icmptype];
	157	if (!p) /* don't print un-named types here */
	158	continue;
5ece6c2d	159	snprintf(name, sizeof(name), "Icmp6%s%s",
14878f75 DS	160	i & 0x100 ? "Out" : "In", p);
14878f75 DS	161	seq_printf(seq, "%-32s\t%lu\n", name,
2a24444f	162	atomic_long_read(smib + i));
14878f75 DS	163	}
	164
	165	/* print by number (nonzero only) - ICMPMsgStat format */
	166	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
	167	unsigned long val;
	168
2a24444f	169	val = atomic_long_read(smib + i);
14878f75 DS	170	if (!val)
14878f75 DS	171	continue;
5ece6c2d	172	snprintf(name, sizeof(name), "Icmp6%sType%u",
14878f75 DS	173	i & 0x100 ? "Out" : "In", i & 0xff);
	174	seq_printf(seq, "%-32s\t%lu\n", name, val);
	175	}
14878f75 DS	176	}
14878f75 DS	177
be281e55 ED	178	/* can be called either with percpu mib (pcpumib != NULL),
	179	* or shared one (smib != NULL)
	180	*/
c9f2dba6	181	static void snmp6_seq_show_item(struct seq_file seq, void __percpu pcpumib,
be281e55	182	atomic_long_t *smib,
5833929c	183	const struct snmp_mib *itemlist)
1da177e4	184	{
4a4857b1	185	unsigned long buff[SNMP_MIB_MAX];
1da177e4	186	int i;
4ce3c183	187
4a4857b1 JH	188	if (pcpumib) {
	189	memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX);
	190
	191	snmp_get_cpu_field_batch(buff, itemlist, pcpumib);
	192	for (i = 0; itemlist[i].name; i++)
	193	seq_printf(seq, "%-32s\t%lu\n",
	194	itemlist[i].name, buff[i]);
	195	} else {
	196	for (i = 0; itemlist[i].name; i++)
	197	seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
	198	atomic_long_read(smib + itemlist[i].entry));
be281e55	199	}
1da177e4 LT	200	}
1da177e4 LT	201
698365fa	202	static void snmp6_seq_show_item64(struct seq_file seq, void __percpu mib,
4ce3c183 ED	203	const struct snmp_mib *itemlist, size_t syncpoff)
4ce3c183 ED	204	{
4a4857b1	205	u64 buff64[SNMP_MIB_MAX];
4ce3c183 ED	206	int i;
4ce3c183 ED	207
3500cd73	208	memset(buff64, 0, sizeof(u64) * SNMP_MIB_MAX);
4a4857b1 JH	209
4a4857b1 JH	210	snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff);
4ce3c183	211	for (i = 0; itemlist[i].name; i++)
4a4857b1	212	seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
4ce3c183 ED	213	}
4ce3c183 ED	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
7b43ccec DL	231	static int snmp6_dev_seq_show(struct seq_file seq, void v)
	232	{
	233	struct inet6_dev idev = (struct inet6_dev )seq->private;
	234
	235	seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
698365fa	236	snmp6_seq_show_item64(seq, idev->stats.ipv6,
766e9f1b	237	snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
be281e55	238	snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
7d720c3e	239	snmp6_icmp6_list);
2a24444f	240	snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
7b43ccec DL	241	return 0;
	242	}
	243
1da177e4 LT	244	int snmp6_register_dev(struct inet6_dev *idev)
	245	{
	246	struct proc_dir_entry *p;
835bcc04	247	struct net *net;
1da177e4 LT	248
	249	if (!idev \|\| !idev->dev)
	250	return -EINVAL;
	251
835bcc04	252	net = dev_net(idev->dev);
835bcc04	253	if (!net->mib.proc_net_devsnmp6)
1da177e4 LT	254	return -ENOENT;
1da177e4 LT	255
3f3942ac CH	256	p = proc_create_single_data(idev->dev->name, 0444,
3f3942ac CH	257	net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, idev);
1da177e4 LT	258	if (!p)
	259	return -ENOMEM;
	260
1da177e4 LT	261	idev->stats.proc_dir_entry = p;
	262	return 0;
	263	}
	264
	265	int snmp6_unregister_dev(struct inet6_dev *idev)
	266	{
835bcc04 DL	267	struct net *net = dev_net(idev->dev);
835bcc04 DL	268	if (!net->mib.proc_net_devsnmp6)
1da177e4	269	return -ENOENT;
c3f6c21d	270	if (!idev->stats.proc_dir_entry)
1da177e4	271	return -EINVAL;
a8ca16ea	272	proc_remove(idev->stats.proc_dir_entry);
5632c515	273	idev->stats.proc_dir_entry = NULL;
1da177e4 LT	274	return 0;
	275	}
	276
2c8c1e72	277	static int __net_init ipv6_proc_init_net(struct net *net)
d0538ca3	278	{
3617d949 CH	279	if (!proc_create_net_single("sockstat6", 0444, net->proc_net,
3617d949 CH	280	sockstat6_seq_show, NULL))
d0538ca3	281	return -ENOMEM;
06f38527	282
3617d949 CH	283	if (!proc_create_net_single("snmp6", 0444, net->proc_net,
3617d949 CH	284	snmp6_seq_show, NULL))
06f38527 DL	285	goto proc_snmp6_fail;
	286
	287	net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
	288	if (!net->mib.proc_net_devsnmp6)
	289	goto proc_dev_snmp6_fail;
d0538ca3	290	return 0;
06f38527	291
4855d6f3	292	proc_dev_snmp6_fail:
ece31ffd	293	remove_proc_entry("snmp6", net->proc_net);
06f38527	294	proc_snmp6_fail:
ece31ffd	295	remove_proc_entry("sockstat6", net->proc_net);
06f38527	296	return -ENOMEM;
d0538ca3 PE	297	}
d0538ca3 PE	298
2c8c1e72	299	static void __net_exit ipv6_proc_exit_net(struct net *net)
d0538ca3	300	{
ece31ffd G	301	remove_proc_entry("sockstat6", net->proc_net);
	302	remove_proc_entry("dev_snmp6", net->proc_net);
	303	remove_proc_entry("snmp6", net->proc_net);
d0538ca3 PE	304	}
	305
	306	static struct pernet_operations ipv6_proc_ops = {
	307	.init = ipv6_proc_init_net,
	308	.exit = ipv6_proc_exit_net,
	309	};
	310
1da177e4 LT	311	int __init ipv6_misc_proc_init(void)
1da177e4 LT	312	{
06f38527	313	return register_pernet_subsys(&ipv6_proc_ops);
1da177e4 LT	314	}
	315
	316	void ipv6_misc_proc_exit(void)
	317	{
d0538ca3	318	unregister_pernet_subsys(&ipv6_proc_ops);
1da177e4	319	}