?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86/speculation/mds: Fix documentation typo
[linux/fpc-iii.git] / net / ipv6 / proc.c
blobdc04c024986ce1c02db0065b2f3ad649e1c9c7e4
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
33 #define MAX4(a, b, c, d) \
34 max_t(u32, max_t(u32, a, b), max_t(u32, c, d))
35 #define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \
36 IPSTATS_MIB_MAX, ICMP_MIB_MAX)
37
38 static int sockstat6_seq_show(struct seq_file *seq, void *v)
39 {
40 struct net *net = seq->private;
41
42 seq_printf(seq, "TCP6: inuse %d\n",
43 sock_prot_inuse_get(net, &tcpv6_prot));
44 seq_printf(seq, "UDP6: inuse %d\n",
45 sock_prot_inuse_get(net, &udpv6_prot));
46 seq_printf(seq, "UDPLITE6: inuse %d\n",
47 sock_prot_inuse_get(net, &udplitev6_prot));
48 seq_printf(seq, "RAW6: inuse %d\n",
49 sock_prot_inuse_get(net, &rawv6_prot));
50 seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
51 atomic_read(&net->ipv6.frags.rhashtable.nelems),
52 frag_mem_limit(&net->ipv6.frags));
53 return 0;
54 }
55
56 static int sockstat6_seq_open(struct inode *inode, struct file *file)
57 {
58 return single_open_net(inode, file, sockstat6_seq_show);
59 }
60
61 static const struct file_operations sockstat6_seq_fops = {
62 .owner = THIS_MODULE,
63 .open = sockstat6_seq_open,
64 .read = seq_read,
65 .llseek = seq_lseek,
66 .release = single_release_net,
67 };
68
69 static const struct snmp_mib snmp6_ipstats_list[] = {
70 /* ipv6 mib according to RFC 2465 */
71 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
72 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
73 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
74 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
75 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
76 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
77 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
78 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
79 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
80 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
81 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
82 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
83 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
84 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
85 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
86 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
87 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
88 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
89 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
90 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
91 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
92 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
93 SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
94 SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
95 SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
96 SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
97 SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
98 SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
99 /* IPSTATS_MIB_CSUMERRORS is not relevant in IPv6 (no checksum) */
100 SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
101 SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
102 SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
103 SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
104 SNMP_MIB_SENTINEL
105 };
106
107 static const struct snmp_mib snmp6_icmp6_list[] = {
108 /* icmpv6 mib according to RFC 2466 */
109 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
110 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
111 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
112 SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
113 SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
114 SNMP_MIB_SENTINEL
115 };
116
117 /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
118 static const char *const icmp6type2name[256] = {
119 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
120 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
121 [ICMPV6_TIME_EXCEED] = "TimeExcds",
122 [ICMPV6_PARAMPROB] = "ParmProblems",
123 [ICMPV6_ECHO_REQUEST] = "Echos",
124 [ICMPV6_ECHO_REPLY] = "EchoReplies",
125 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
126 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
127 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
128 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
129 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
130 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
131 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
132 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
133 [NDISC_REDIRECT] = "Redirects",
134 };
135
136
137 static const struct snmp_mib snmp6_udp6_list[] = {
138 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
139 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
140 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
141 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
142 SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
143 SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
144 SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
145 SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
146 SNMP_MIB_SENTINEL
147 };
148
149 static const struct snmp_mib snmp6_udplite6_list[] = {
150 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
151 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
152 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
153 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
154 SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
155 SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
156 SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
157 SNMP_MIB_SENTINEL
158 };
159
160 static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
161 {
162 char name[32];
163 int i;
164
165 /* print by name -- deprecated items */
166 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
167 int icmptype;
168 const char *p;
169
170 icmptype = i & 0xff;
171 p = icmp6type2name[icmptype];
172 if (!p) /* don't print un-named types here */
173 continue;
174 snprintf(name, sizeof(name), "Icmp6%s%s",
175 i & 0x100 ? "Out" : "In", p);
176 seq_printf(seq, "%-32s\t%lu\n", name,
177 atomic_long_read(smib + i));
178 }
179
180 /* print by number (nonzero only) - ICMPMsgStat format */
181 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
182 unsigned long val;
183
184 val = atomic_long_read(smib + i);
185 if (!val)
186 continue;
187 snprintf(name, sizeof(name), "Icmp6%sType%u",
188 i & 0x100 ? "Out" : "In", i & 0xff);
189 seq_printf(seq, "%-32s\t%lu\n", name, val);
190 }
191 }
192
193 /* can be called either with percpu mib (pcpumib != NULL),
194 * or shared one (smib != NULL)
195 */
196 static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib,
197 atomic_long_t *smib,
198 const struct snmp_mib *itemlist)
199 {
200 unsigned long buff[SNMP_MIB_MAX];
201 int i;
202
203 if (pcpumib) {
204 memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX);
205
206 snmp_get_cpu_field_batch(buff, itemlist, pcpumib);
207 for (i = 0; itemlist[i].name; i++)
208 seq_printf(seq, "%-32s\t%lu\n",
209 itemlist[i].name, buff[i]);
210 } else {
211 for (i = 0; itemlist[i].name; i++)
212 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
213 atomic_long_read(smib + itemlist[i].entry));
214 }
215 }
216
217 static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
218 const struct snmp_mib *itemlist, size_t syncpoff)
219 {
220 u64 buff64[SNMP_MIB_MAX];
221 int i;
222
223 memset(buff64, 0, sizeof(u64) * SNMP_MIB_MAX);
224
225 snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff);
226 for (i = 0; itemlist[i].name; i++)
227 seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
228 }
229
230 static int snmp6_seq_show(struct seq_file *seq, void *v)
231 {
232 struct net *net = (struct net *)seq->private;
233
234 snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
235 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
236 snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
237 NULL, snmp6_icmp6_list);
238 snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
239 snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
240 NULL, snmp6_udp6_list);
241 snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
242 NULL, snmp6_udplite6_list);
243 return 0;
244 }
245
246 static int snmp6_seq_open(struct inode *inode, struct file *file)
247 {
248 return single_open_net(inode, file, snmp6_seq_show);
249 }
250
251 static const struct file_operations snmp6_seq_fops = {
252 .owner = THIS_MODULE,
253 .open = snmp6_seq_open,
254 .read = seq_read,
255 .llseek = seq_lseek,
256 .release = single_release_net,
257 };
258
259 static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
260 {
261 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
262
263 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
264 snmp6_seq_show_item64(seq, idev->stats.ipv6,
265 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
266 snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
267 snmp6_icmp6_list);
268 snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
269 return 0;
270 }
271
272 static int snmp6_dev_seq_open(struct inode *inode, struct file *file)
273 {
274 return single_open(file, snmp6_dev_seq_show, PDE_DATA(inode));
275 }
276
277 static const struct file_operations snmp6_dev_seq_fops = {
278 .owner = THIS_MODULE,
279 .open = snmp6_dev_seq_open,
280 .read = seq_read,
281 .llseek = seq_lseek,
282 .release = single_release,
283 };
284
285 int snmp6_register_dev(struct inet6_dev *idev)
286 {
287 struct proc_dir_entry *p;
288 struct net *net;
289
290 if (!idev || !idev->dev)
291 return -EINVAL;
292
293 net = dev_net(idev->dev);
294 if (!net->mib.proc_net_devsnmp6)
295 return -ENOENT;
296
297 p = proc_create_data(idev->dev->name, S_IRUGO,
298 net->mib.proc_net_devsnmp6,
299 &snmp6_dev_seq_fops, idev);
300 if (!p)
301 return -ENOMEM;
302
303 idev->stats.proc_dir_entry = p;
304 return 0;
305 }
306
307 int snmp6_unregister_dev(struct inet6_dev *idev)
308 {
309 struct net *net = dev_net(idev->dev);
310 if (!net->mib.proc_net_devsnmp6)
311 return -ENOENT;
312 if (!idev->stats.proc_dir_entry)
313 return -EINVAL;
314 proc_remove(idev->stats.proc_dir_entry);
315 idev->stats.proc_dir_entry = NULL;
316 return 0;
317 }
318
319 static int __net_init ipv6_proc_init_net(struct net *net)
320 {
321 if (!proc_create("sockstat6", S_IRUGO, net->proc_net,
322 &sockstat6_seq_fops))
323 return -ENOMEM;
324
325 if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
326 goto proc_snmp6_fail;
327
328 net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
329 if (!net->mib.proc_net_devsnmp6)
330 goto proc_dev_snmp6_fail;
331 return 0;
332
333 proc_dev_snmp6_fail:
334 remove_proc_entry("snmp6", net->proc_net);
335 proc_snmp6_fail:
336 remove_proc_entry("sockstat6", net->proc_net);
337 return -ENOMEM;
338 }
339
340 static void __net_exit ipv6_proc_exit_net(struct net *net)
341 {
342 remove_proc_entry("sockstat6", net->proc_net);
343 remove_proc_entry("dev_snmp6", net->proc_net);
344 remove_proc_entry("snmp6", net->proc_net);
345 }
346
347 static struct pernet_operations ipv6_proc_ops = {
348 .init = ipv6_proc_init_net,
349 .exit = ipv6_proc_exit_net,
350 };
351
352 int __init ipv6_misc_proc_init(void)
353 {
354 return register_pernet_subsys(&ipv6_proc_ops);
355 }
356
357 void ipv6_misc_proc_exit(void)
358 {
359 unregister_pernet_subsys(&ipv6_proc_ops);
360 }
361
Linux with added FPC-III support