346 lines
11 KiB
C
346 lines
11 KiB
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;
|
|
|
|
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 %d memory %d\n",
|
|
ip6_frag_nqueues(net), ip6_frag_mem(net));
|
|
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_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, (void __percpu **)net->mib.ipv6_statistics,
|
|
snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
|
|
snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics,
|
|
NULL, snmp6_icmp6_list);
|
|
snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
|
|
snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6,
|
|
NULL, snmp6_udp6_list);
|
|
snmp6_seq_show_item(seq, (void __percpu **)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, (void __percpu **)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);
|
|
}
|
|
|