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1// SPDX-License-Identifier: GPL-2.0-or-later
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 *
11 * Authors: David S. Miller (davem@caip.rutgers.edu)
12 * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
13 */
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>
20#include <linux/export.h>
21#include <net/net_namespace.h>
22#include <net/ip.h>
23#include <net/sock.h>
24#include <net/tcp.h>
25#include <net/udp.h>
26#include <net/transp_v6.h>
27#include <net/ipv6.h>
28
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
34static int sockstat6_seq_show(struct seq_file *seq, void *v)
35{
36 struct net *net = seq->private;
37
38 seq_printf(seq, "TCP6: inuse %d\n",
39 sock_prot_inuse_get(net, &tcpv6_prot));
40 seq_printf(seq, "UDP6: inuse %d\n",
41 sock_prot_inuse_get(net, &udpv6_prot));
42 seq_printf(seq, "UDPLITE6: inuse %d\n",
43 sock_prot_inuse_get(net, &udplitev6_prot));
44 seq_printf(seq, "RAW6: inuse %d\n",
45 sock_prot_inuse_get(net, &rawv6_prot));
46 seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
47 atomic_read(&net->ipv6.fqdir->rhashtable.nelems),
48 frag_mem_limit(net->ipv6.fqdir));
49 return 0;
50}
51
52static const struct snmp_mib snmp6_ipstats_list[] = {
53/* ipv6 mib according to RFC 2465 */
54 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
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),
64 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
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),
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),
82 /* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
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),
87 SNMP_MIB_ITEM("Ip6OutTransmits", IPSTATS_MIB_OUTPKTS),
88 SNMP_MIB_SENTINEL
89};
90
91static const struct snmp_mib snmp6_icmp6_list[] = {
92/* icmpv6 mib according to RFC 2466 */
93 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
94 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
95 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
96 SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
97 SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
98 SNMP_MIB_ITEM("Icmp6OutRateLimitHost", ICMP6_MIB_RATELIMITHOST),
99 SNMP_MIB_SENTINEL
100};
101
102/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
103static const char *const icmp6type2name[256] = {
104 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
105 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
106 [ICMPV6_TIME_EXCEED] = "TimeExcds",
107 [ICMPV6_PARAMPROB] = "ParmProblems",
108 [ICMPV6_ECHO_REQUEST] = "Echos",
109 [ICMPV6_ECHO_REPLY] = "EchoReplies",
110 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
111 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
112 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
113 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
114 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
115 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
116 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
117 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
118 [NDISC_REDIRECT] = "Redirects",
119};
120
121
122static const struct snmp_mib snmp6_udp6_list[] = {
123 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
124 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
125 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
126 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
127 SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
128 SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
129 SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
130 SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
131 SNMP_MIB_ITEM("Udp6MemErrors", UDP_MIB_MEMERRORS),
132 SNMP_MIB_SENTINEL
133};
134
135static const struct snmp_mib snmp6_udplite6_list[] = {
136 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
137 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
138 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
139 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
140 SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
141 SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
142 SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
143 SNMP_MIB_ITEM("UdpLite6MemErrors", UDP_MIB_MEMERRORS),
144 SNMP_MIB_SENTINEL
145};
146
147static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
148{
149 char name[32];
150 int i;
151
152 /* print by name -- deprecated items */
153 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
154 int icmptype;
155 const char *p;
156
157 icmptype = i & 0xff;
158 p = icmp6type2name[icmptype];
159 if (!p) /* don't print un-named types here */
160 continue;
161 snprintf(name, sizeof(name), "Icmp6%s%s",
162 i & 0x100 ? "Out" : "In", p);
163 seq_printf(seq, "%-32s\t%lu\n", name,
164 atomic_long_read(smib + i));
165 }
166
167 /* print by number (nonzero only) - ICMPMsgStat format */
168 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
169 unsigned long val;
170
171 val = atomic_long_read(smib + i);
172 if (!val)
173 continue;
174 snprintf(name, sizeof(name), "Icmp6%sType%u",
175 i & 0x100 ? "Out" : "In", i & 0xff);
176 seq_printf(seq, "%-32s\t%lu\n", name, val);
177 }
178}
179
180/* can be called either with percpu mib (pcpumib != NULL),
181 * or shared one (smib != NULL)
182 */
183static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib,
184 atomic_long_t *smib,
185 const struct snmp_mib *itemlist)
186{
187 unsigned long buff[SNMP_MIB_MAX];
188 int i;
189
190 if (pcpumib) {
191 memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX);
192
193 snmp_get_cpu_field_batch(buff, itemlist, pcpumib);
194 for (i = 0; itemlist[i].name; i++)
195 seq_printf(seq, "%-32s\t%lu\n",
196 itemlist[i].name, buff[i]);
197 } else {
198 for (i = 0; itemlist[i].name; i++)
199 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
200 atomic_long_read(smib + itemlist[i].entry));
201 }
202}
203
204static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
205 const struct snmp_mib *itemlist, size_t syncpoff)
206{
207 u64 buff64[SNMP_MIB_MAX];
208 int i;
209
210 memset(buff64, 0, sizeof(u64) * SNMP_MIB_MAX);
211
212 snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff);
213 for (i = 0; itemlist[i].name; i++)
214 seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
215}
216
217static int snmp6_seq_show(struct seq_file *seq, void *v)
218{
219 struct net *net = (struct net *)seq->private;
220
221 snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
222 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
223 snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
224 NULL, snmp6_icmp6_list);
225 snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
226 snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
227 NULL, snmp6_udp6_list);
228 snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
229 NULL, snmp6_udplite6_list);
230 return 0;
231}
232
233static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
234{
235 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
236
237 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
238 snmp6_seq_show_item64(seq, idev->stats.ipv6,
239 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
240 snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
241 snmp6_icmp6_list);
242 snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
243 return 0;
244}
245
246int snmp6_register_dev(struct inet6_dev *idev)
247{
248 struct proc_dir_entry *p;
249 struct net *net;
250
251 if (!idev || !idev->dev)
252 return -EINVAL;
253
254 net = dev_net(idev->dev);
255 if (!net->mib.proc_net_devsnmp6)
256 return -ENOENT;
257
258 p = proc_create_single_data(idev->dev->name, 0444,
259 net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, idev);
260 if (!p)
261 return -ENOMEM;
262
263 idev->stats.proc_dir_entry = p;
264 return 0;
265}
266
267int snmp6_unregister_dev(struct inet6_dev *idev)
268{
269 struct net *net = dev_net(idev->dev);
270 if (!net->mib.proc_net_devsnmp6)
271 return -ENOENT;
272 if (!idev->stats.proc_dir_entry)
273 return -EINVAL;
274 proc_remove(idev->stats.proc_dir_entry);
275 idev->stats.proc_dir_entry = NULL;
276 return 0;
277}
278
279static int __net_init ipv6_proc_init_net(struct net *net)
280{
281 if (!proc_create_net_single("sockstat6", 0444, net->proc_net,
282 sockstat6_seq_show, NULL))
283 return -ENOMEM;
284
285 if (!proc_create_net_single("snmp6", 0444, net->proc_net,
286 snmp6_seq_show, NULL))
287 goto proc_snmp6_fail;
288
289 net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
290 if (!net->mib.proc_net_devsnmp6)
291 goto proc_dev_snmp6_fail;
292 return 0;
293
294proc_dev_snmp6_fail:
295 remove_proc_entry("snmp6", net->proc_net);
296proc_snmp6_fail:
297 remove_proc_entry("sockstat6", net->proc_net);
298 return -ENOMEM;
299}
300
301static void __net_exit ipv6_proc_exit_net(struct net *net)
302{
303 remove_proc_entry("sockstat6", net->proc_net);
304 remove_proc_entry("dev_snmp6", net->proc_net);
305 remove_proc_entry("snmp6", net->proc_net);
306}
307
308static struct pernet_operations ipv6_proc_ops = {
309 .init = ipv6_proc_init_net,
310 .exit = ipv6_proc_exit_net,
311};
312
313int __init ipv6_misc_proc_init(void)
314{
315 return register_pernet_subsys(&ipv6_proc_ops);
316}
317
318void ipv6_misc_proc_exit(void)
319{
320 unregister_pernet_subsys(&ipv6_proc_ops);
321}
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 *
10 * Authors: David S. Miller (davem@caip.rutgers.edu)
11 * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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 */
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 <linux/export.h>
25#include <net/net_namespace.h>
26#include <net/ip.h>
27#include <net/sock.h>
28#include <net/tcp.h>
29#include <net/udp.h>
30#include <net/transp_v6.h>
31#include <net/ipv6.h>
32
33static int sockstat6_seq_show(struct seq_file *seq, void *v)
34{
35 struct net *net = seq->private;
36
37 seq_printf(seq, "TCP6: inuse %d\n",
38 sock_prot_inuse_get(net, &tcpv6_prot));
39 seq_printf(seq, "UDP6: inuse %d\n",
40 sock_prot_inuse_get(net, &udpv6_prot));
41 seq_printf(seq, "UDPLITE6: inuse %d\n",
42 sock_prot_inuse_get(net, &udplitev6_prot));
43 seq_printf(seq, "RAW6: inuse %d\n",
44 sock_prot_inuse_get(net, &rawv6_prot));
45 seq_printf(seq, "FRAG6: inuse %d memory %d\n",
46 ip6_frag_nqueues(net), ip6_frag_mem(net));
47 return 0;
48}
49
50static int sockstat6_seq_open(struct inode *inode, struct file *file)
51{
52 return single_open_net(inode, file, sockstat6_seq_show);
53}
54
55static const struct file_operations sockstat6_seq_fops = {
56 .owner = THIS_MODULE,
57 .open = sockstat6_seq_open,
58 .read = seq_read,
59 .llseek = seq_lseek,
60 .release = single_release_net,
61};
62
63static const struct snmp_mib snmp6_ipstats_list[] = {
64/* ipv6 mib according to RFC 2465 */
65 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
66 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
67 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
68 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
69 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
70 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
71 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
72 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
73 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
74 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
75 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
76 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
77 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
78 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
79 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
80 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
81 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
82 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
83 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
84 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
85 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
86 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
87 SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
88 SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
89 SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
90 SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
91 SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
92 SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
93 SNMP_MIB_SENTINEL
94};
95
96static const struct snmp_mib snmp6_icmp6_list[] = {
97/* icmpv6 mib according to RFC 2466 */
98 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
99 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
100 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
101 SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
102 SNMP_MIB_SENTINEL
103};
104
105/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
106static const char *const icmp6type2name[256] = {
107 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
108 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
109 [ICMPV6_TIME_EXCEED] = "TimeExcds",
110 [ICMPV6_PARAMPROB] = "ParmProblems",
111 [ICMPV6_ECHO_REQUEST] = "Echos",
112 [ICMPV6_ECHO_REPLY] = "EchoReplies",
113 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
114 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
115 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
116 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
117 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
118 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
119 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
120 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
121 [NDISC_REDIRECT] = "Redirects",
122};
123
124
125static const struct snmp_mib snmp6_udp6_list[] = {
126 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
127 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
128 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
129 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
130 SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
131 SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
132 SNMP_MIB_SENTINEL
133};
134
135static const struct snmp_mib snmp6_udplite6_list[] = {
136 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
137 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
138 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
139 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
140 SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
141 SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
142 SNMP_MIB_SENTINEL
143};
144
145static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
146{
147 char name[32];
148 int i;
149
150 /* print by name -- deprecated items */
151 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
152 int icmptype;
153 const char *p;
154
155 icmptype = i & 0xff;
156 p = icmp6type2name[icmptype];
157 if (!p) /* don't print un-named types here */
158 continue;
159 snprintf(name, sizeof(name), "Icmp6%s%s",
160 i & 0x100 ? "Out" : "In", p);
161 seq_printf(seq, "%-32s\t%lu\n", name,
162 atomic_long_read(smib + i));
163 }
164
165 /* print by number (nonzero only) - ICMPMsgStat format */
166 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
167 unsigned long val;
168
169 val = atomic_long_read(smib + i);
170 if (!val)
171 continue;
172 snprintf(name, sizeof(name), "Icmp6%sType%u",
173 i & 0x100 ? "Out" : "In", i & 0xff);
174 seq_printf(seq, "%-32s\t%lu\n", name, val);
175 }
176}
177
178/* can be called either with percpu mib (pcpumib != NULL),
179 * or shared one (smib != NULL)
180 */
181static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib,
182 atomic_long_t *smib,
183 const struct snmp_mib *itemlist)
184{
185 int i;
186 unsigned long val;
187
188 for (i = 0; itemlist[i].name; i++) {
189 val = pcpumib ?
190 snmp_fold_field(pcpumib, itemlist[i].entry) :
191 atomic_long_read(smib + itemlist[i].entry);
192 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val);
193 }
194}
195
196static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib,
197 const struct snmp_mib *itemlist, size_t syncpoff)
198{
199 int i;
200
201 for (i = 0; itemlist[i].name; i++)
202 seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name,
203 snmp_fold_field64(mib, itemlist[i].entry, syncpoff));
204}
205
206static int snmp6_seq_show(struct seq_file *seq, void *v)
207{
208 struct net *net = (struct net *)seq->private;
209
210 snmp6_seq_show_item64(seq, (void __percpu **)net->mib.ipv6_statistics,
211 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
212 snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics,
213 NULL, snmp6_icmp6_list);
214 snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
215 snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6,
216 NULL, snmp6_udp6_list);
217 snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6,
218 NULL, snmp6_udplite6_list);
219 return 0;
220}
221
222static int snmp6_seq_open(struct inode *inode, struct file *file)
223{
224 return single_open_net(inode, file, snmp6_seq_show);
225}
226
227static const struct file_operations snmp6_seq_fops = {
228 .owner = THIS_MODULE,
229 .open = snmp6_seq_open,
230 .read = seq_read,
231 .llseek = seq_lseek,
232 .release = single_release_net,
233};
234
235static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
236{
237 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
238
239 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
240 snmp6_seq_show_item64(seq, (void __percpu **)idev->stats.ipv6,
241 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
242 snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
243 snmp6_icmp6_list);
244 snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
245 return 0;
246}
247
248static int snmp6_dev_seq_open(struct inode *inode, struct file *file)
249{
250 return single_open(file, snmp6_dev_seq_show, PDE(inode)->data);
251}
252
253static const struct file_operations snmp6_dev_seq_fops = {
254 .owner = THIS_MODULE,
255 .open = snmp6_dev_seq_open,
256 .read = seq_read,
257 .llseek = seq_lseek,
258 .release = single_release,
259};
260
261int snmp6_register_dev(struct inet6_dev *idev)
262{
263 struct proc_dir_entry *p;
264 struct net *net;
265
266 if (!idev || !idev->dev)
267 return -EINVAL;
268
269 net = dev_net(idev->dev);
270 if (!net->mib.proc_net_devsnmp6)
271 return -ENOENT;
272
273 p = proc_create_data(idev->dev->name, S_IRUGO,
274 net->mib.proc_net_devsnmp6,
275 &snmp6_dev_seq_fops, idev);
276 if (!p)
277 return -ENOMEM;
278
279 idev->stats.proc_dir_entry = p;
280 return 0;
281}
282
283int snmp6_unregister_dev(struct inet6_dev *idev)
284{
285 struct net *net = dev_net(idev->dev);
286 if (!net->mib.proc_net_devsnmp6)
287 return -ENOENT;
288 if (!idev->stats.proc_dir_entry)
289 return -EINVAL;
290 remove_proc_entry(idev->stats.proc_dir_entry->name,
291 net->mib.proc_net_devsnmp6);
292 idev->stats.proc_dir_entry = NULL;
293 return 0;
294}
295
296static int __net_init ipv6_proc_init_net(struct net *net)
297{
298 if (!proc_net_fops_create(net, "sockstat6", S_IRUGO,
299 &sockstat6_seq_fops))
300 return -ENOMEM;
301
302 if (!proc_net_fops_create(net, "snmp6", S_IRUGO, &snmp6_seq_fops))
303 goto proc_snmp6_fail;
304
305 net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
306 if (!net->mib.proc_net_devsnmp6)
307 goto proc_dev_snmp6_fail;
308 return 0;
309
310proc_snmp6_fail:
311 proc_net_remove(net, "sockstat6");
312proc_dev_snmp6_fail:
313 proc_net_remove(net, "dev_snmp6");
314 return -ENOMEM;
315}
316
317static void __net_exit ipv6_proc_exit_net(struct net *net)
318{
319 proc_net_remove(net, "sockstat6");
320 proc_net_remove(net, "dev_snmp6");
321 proc_net_remove(net, "snmp6");
322}
323
324static struct pernet_operations ipv6_proc_ops = {
325 .init = ipv6_proc_init_net,
326 .exit = ipv6_proc_exit_net,
327};
328
329int __init ipv6_misc_proc_init(void)
330{
331 return register_pernet_subsys(&ipv6_proc_ops);
332}
333
334void ipv6_misc_proc_exit(void)
335{
336 unregister_pernet_subsys(&ipv6_proc_ops);
337}
338