1 files changed, 150 insertions, 79 deletions

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 199ef379e50..3317440ea34 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -7,8 +7,6 @@
  *		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>
  *
@@ -23,6 +21,7 @@
 #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>
@@ -31,26 +30,39 @@
 #include <net/transp_v6.h>
 #include <net/ipv6.h>
 
-static struct proc_dir_entry *proc_net_devsnmp6;
-
 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(&tcpv6_prot));
+		       sock_prot_inuse_get(net, &tcpv6_prot));
 	seq_printf(seq, "UDP6: inuse %d\n",
-		       sock_prot_inuse_get(&udpv6_prot));
+		       sock_prot_inuse_get(net, &udpv6_prot));
 	seq_printf(seq, "UDPLITE6: inuse %d\n",
-			sock_prot_inuse_get(&udplitev6_prot));
+			sock_prot_inuse_get(net, &udplitev6_prot));
 	seq_printf(seq, "RAW6: inuse %d\n",
-		       sock_prot_inuse_get(&rawv6_prot));
+		       sock_prot_inuse_get(net, &rawv6_prot));
 	seq_printf(seq, "FRAG6: inuse %d memory %d\n",
-		       ip6_frag_nqueues(&init_net), ip6_frag_mem(&init_net));
+		       ip6_frag_nqueues(net), ip6_frag_mem(net));
 	return 0;
 }
 
-static struct snmp_mib snmp6_ipstats_list[] = {
+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_INRECEIVES),
+	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),
@@ -60,7 +72,7 @@ static struct snmp_mib snmp6_ipstats_list[] = {
 	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("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),
@@ -72,19 +84,32 @@ static struct snmp_mib snmp6_ipstats_list[] = {
 	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 struct snmp_mib snmp6_icmp6_list[] = {
+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 char *icmp6type2name[256] = {
+static const char *const icmp6type2name[256] = {
 	[ICMPV6_DEST_UNREACH] = "DestUnreachs",
 	[ICMPV6_PKT_TOOBIG] = "PktTooBigs",
 	[ICMPV6_TIME_EXCEED] = "TimeExcds",
@@ -103,105 +128,139 @@ static char *icmp6type2name[256] = {
 };
 
 
-static struct snmp_mib snmp6_udp6_list[] = {
+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_SENTINEL
 };
 
-static struct snmp_mib snmp6_udplite6_list[] = {
+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, void **mib)
+static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
 {
-	static char name[32];
+	char name[32];
 	int i;
 
 	/* print by name -- deprecated items */
 	for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
 		int icmptype;
-		char *p;
+		const 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",
+		snprintf(name, sizeof(name), "Icmp6%s%s",
 			i & 0x100 ? "Out" : "In", p);
 		seq_printf(seq, "%-32s\t%lu\n", name,
-			snmp_fold_field(mib, i));
+			   atomic_long_read(smib + 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);
+		val = atomic_long_read(smib + i);
 		if (!val)
 			continue;
-		(void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u",
+		snprintf(name, sizeof(name), "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)
+/* 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;
-	for (i=0; itemlist[i].name; i++)
-		seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
-			   snmp_fold_field(mib, itemlist[i].entry));
+	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 int snmp6_seq_show(struct seq_file *seq, void *v)
+static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
+				  const struct snmp_mib *itemlist, size_t syncpoff)
 {
-	struct inet6_dev *idev = (struct inet6_dev *)seq->private;
+	int i;
 
-	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);
-	}
+	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 sockstat6_seq_open(struct inode *inode, struct file *file)
+static int snmp6_seq_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, sockstat6_seq_show, NULL);
+	return single_open_net(inode, file, snmp6_seq_show);
 }
 
-static const struct file_operations sockstat6_seq_fops = {
+static const struct file_operations snmp6_seq_fops = {
 	.owner	 = THIS_MODULE,
-	.open	 = sockstat6_seq_open,
+	.open	 = snmp6_seq_open,
 	.read	 = seq_read,
 	.llseek	 = seq_lseek,
-	.release = single_release,
+	.release = single_release_net,
 };
 
-static int snmp6_seq_open(struct inode *inode, struct file *file)
+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_seq_show, PDE(inode)->data);
+	return single_open(file, snmp6_dev_seq_show, PDE_DATA(inode));
 }
 
-static const struct file_operations snmp6_seq_fops = {
+static const struct file_operations snmp6_dev_seq_fops = {
 	.owner	 = THIS_MODULE,
-	.open	 = snmp6_seq_open,
+	.open	 = snmp6_dev_seq_open,
 	.read	 = seq_read,
 	.llseek	 = seq_lseek,
 	.release = single_release,
@@ -210,65 +269,77 @@ static const struct file_operations snmp6_seq_fops = {
 int snmp6_register_dev(struct inet6_dev *idev)
 {
 	struct proc_dir_entry *p;
+	struct net *net;
 
 	if (!idev || !idev->dev)
 		return -EINVAL;
 
-	if (!proc_net_devsnmp6)
+	net = dev_net(idev->dev);
+	if (!net->mib.proc_net_devsnmp6)
 		return -ENOENT;
 
-	p = proc_create(idev->dev->name, S_IRUGO,
-			proc_net_devsnmp6, &snmp6_seq_fops);
+	p = proc_create_data(idev->dev->name, S_IRUGO,
+			     net->mib.proc_net_devsnmp6,
+			     &snmp6_dev_seq_fops, idev);
 	if (!p)
 		return -ENOMEM;
 
-	p->data = idev;
-
 	idev->stats.proc_dir_entry = p;
 	return 0;
 }
 
 int snmp6_unregister_dev(struct inet6_dev *idev)
 {
-	if (!proc_net_devsnmp6)
+	struct net *net = dev_net(idev->dev);
+	if (!net->mib.proc_net_devsnmp6)
 		return -ENOENT;
-	if (!idev || !idev->stats.proc_dir_entry)
+	if (!idev->stats.proc_dir_entry)
 		return -EINVAL;
-	remove_proc_entry(idev->stats.proc_dir_entry->name,
-			  proc_net_devsnmp6);
+	proc_remove(idev->stats.proc_dir_entry);
 	idev->stats.proc_dir_entry = NULL;
 	return 0;
 }
 
-int __init ipv6_misc_proc_init(void)
+static int __net_init ipv6_proc_init_net(struct net *net)
 {
-	int rc = 0;
+	if (!proc_create("sockstat6", S_IRUGO, net->proc_net,
+			 &sockstat6_seq_fops))
+		return -ENOMEM;
 
-	if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops))
+	if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
 		goto proc_snmp6_fail;
 
-	proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net);
-	if (!proc_net_devsnmp6)
+	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;
 
-	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");
+	remove_proc_entry("snmp6", net->proc_net);
 proc_snmp6_fail:
-	rc = -ENOMEM;
-	goto out;
+	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)
 {
-	proc_net_remove(&init_net, "sockstat6");
-	proc_net_remove(&init_net, "dev_snmp6");
-	proc_net_remove(&init_net, "snmp6");
+	unregister_pernet_subsys(&ipv6_proc_ops);
 }