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.
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.
10 * Authors: David S. Miller (davem@caip.rutgers.edu)
11 * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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.
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>
24 #include <net/net_namespace.h>
29 #include <net/transp_v6.h>
32 static int sockstat6_seq_show(struct seq_file *seq, void *v)
34 struct net *net = seq->private;
36 seq_printf(seq, "TCP6: inuse %d\n",
37 sock_prot_inuse_get(net, &tcpv6_prot));
38 seq_printf(seq, "UDP6: inuse %d\n",
39 sock_prot_inuse_get(net, &udpv6_prot));
40 seq_printf(seq, "UDPLITE6: inuse %d\n",
41 sock_prot_inuse_get(net, &udplitev6_prot));
42 seq_printf(seq, "RAW6: inuse %d\n",
43 sock_prot_inuse_get(net, &rawv6_prot));
44 seq_printf(seq, "FRAG6: inuse %d memory %d\n",
45 ip6_frag_nqueues(net), ip6_frag_mem(net));
49 static int sockstat6_seq_open(struct inode *inode, struct file *file)
51 return single_open_net(inode, file, sockstat6_seq_show);
54 static const struct file_operations sockstat6_seq_fops = {
56 .open = sockstat6_seq_open,
59 .release = single_release_net,
62 static const struct snmp_mib snmp6_ipstats_list[] = {
63 /* ipv6 mib according to RFC 2465 */
64 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
65 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
66 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
67 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
68 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
69 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
70 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
71 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
72 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
73 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
74 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
75 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
76 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
77 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
78 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
79 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
80 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
81 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
82 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
83 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
84 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
85 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
86 SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
87 SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
88 SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
89 SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
90 SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
91 SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
95 static const struct snmp_mib snmp6_icmp6_list[] = {
96 /* icmpv6 mib according to RFC 2466 */
97 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
98 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
99 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
103 /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
104 static const char *const icmp6type2name[256] = {
105 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
106 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
107 [ICMPV6_TIME_EXCEED] = "TimeExcds",
108 [ICMPV6_PARAMPROB] = "ParmProblems",
109 [ICMPV6_ECHO_REQUEST] = "Echos",
110 [ICMPV6_ECHO_REPLY] = "EchoReplies",
111 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
112 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
113 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
114 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
115 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
116 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
117 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
118 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
119 [NDISC_REDIRECT] = "Redirects",
123 static const struct snmp_mib snmp6_udp6_list[] = {
124 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
125 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
126 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
127 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
131 static const struct snmp_mib snmp6_udplite6_list[] = {
132 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
133 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
134 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
135 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
139 static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **mib)
144 /* print by name -- deprecated items */
145 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
150 p = icmp6type2name[icmptype];
151 if (!p) /* don't print un-named types here */
153 snprintf(name, sizeof(name), "Icmp6%s%s",
154 i & 0x100 ? "Out" : "In", p);
155 seq_printf(seq, "%-32s\t%lu\n", name,
156 snmp_fold_field(mib, i));
159 /* print by number (nonzero only) - ICMPMsgStat format */
160 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
163 val = snmp_fold_field(mib, i);
166 snprintf(name, sizeof(name), "Icmp6%sType%u",
167 i & 0x100 ? "Out" : "In", i & 0xff);
168 seq_printf(seq, "%-32s\t%lu\n", name, val);
173 static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **mib,
174 const struct snmp_mib *itemlist)
177 for (i=0; itemlist[i].name; i++)
178 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
179 snmp_fold_field(mib, itemlist[i].entry));
182 static int snmp6_seq_show(struct seq_file *seq, void *v)
184 struct net *net = (struct net *)seq->private;
186 snmp6_seq_show_item(seq, (void __percpu **)net->mib.ipv6_statistics,
188 snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics,
190 snmp6_seq_show_icmpv6msg(seq,
191 (void __percpu **)net->mib.icmpv6msg_statistics);
192 snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6,
194 snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6,
195 snmp6_udplite6_list);
199 static int snmp6_seq_open(struct inode *inode, struct file *file)
201 return single_open_net(inode, file, snmp6_seq_show);
204 static const struct file_operations snmp6_seq_fops = {
205 .owner = THIS_MODULE,
206 .open = snmp6_seq_open,
209 .release = single_release_net,
212 static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
214 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
216 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
217 snmp6_seq_show_item(seq, (void __percpu **)idev->stats.ipv6,
219 snmp6_seq_show_item(seq, (void __percpu **)idev->stats.icmpv6,
221 snmp6_seq_show_icmpv6msg(seq, (void __percpu **)idev->stats.icmpv6msg);
225 static int snmp6_dev_seq_open(struct inode *inode, struct file *file)
227 return single_open(file, snmp6_dev_seq_show, PDE(inode)->data);
230 static const struct file_operations snmp6_dev_seq_fops = {
231 .owner = THIS_MODULE,
232 .open = snmp6_dev_seq_open,
235 .release = single_release,
238 int snmp6_register_dev(struct inet6_dev *idev)
240 struct proc_dir_entry *p;
243 if (!idev || !idev->dev)
246 net = dev_net(idev->dev);
247 if (!net->mib.proc_net_devsnmp6)
250 p = proc_create_data(idev->dev->name, S_IRUGO,
251 net->mib.proc_net_devsnmp6,
252 &snmp6_dev_seq_fops, idev);
256 idev->stats.proc_dir_entry = p;
260 int snmp6_unregister_dev(struct inet6_dev *idev)
262 struct net *net = dev_net(idev->dev);
263 if (!net->mib.proc_net_devsnmp6)
265 if (!idev->stats.proc_dir_entry)
267 remove_proc_entry(idev->stats.proc_dir_entry->name,
268 net->mib.proc_net_devsnmp6);
269 idev->stats.proc_dir_entry = NULL;
273 static int __net_init ipv6_proc_init_net(struct net *net)
275 if (!proc_net_fops_create(net, "sockstat6", S_IRUGO,
276 &sockstat6_seq_fops))
279 if (!proc_net_fops_create(net, "snmp6", S_IRUGO, &snmp6_seq_fops))
280 goto proc_snmp6_fail;
282 net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
283 if (!net->mib.proc_net_devsnmp6)
284 goto proc_dev_snmp6_fail;
288 proc_net_remove(net, "sockstat6");
290 proc_net_remove(net, "dev_snmp6");
294 static void __net_exit ipv6_proc_exit_net(struct net *net)
296 proc_net_remove(net, "sockstat6");
297 proc_net_remove(net, "dev_snmp6");
298 proc_net_remove(net, "snmp6");
301 static struct pernet_operations ipv6_proc_ops = {
302 .init = ipv6_proc_init_net,
303 .exit = ipv6_proc_exit_net,
306 int __init ipv6_misc_proc_init(void)
308 return register_pernet_subsys(&ipv6_proc_ops);
311 void ipv6_misc_proc_exit(void)
313 unregister_pernet_subsys(&ipv6_proc_ops);