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Commit | Line | Data |
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1da177e4 LT |
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 | * | |
1da177e4 LT |
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 | */ | |
1da177e4 LT |
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> | |
bc3b2d7f | 24 | #include <linux/export.h> |
457c4cbc | 25 | #include <net/net_namespace.h> |
7f7d9a6b | 26 | #include <net/ip.h> |
1da177e4 LT |
27 | #include <net/sock.h> |
28 | #include <net/tcp.h> | |
1781f7f5 | 29 | #include <net/udp.h> |
1da177e4 LT |
30 | #include <net/transp_v6.h> |
31 | #include <net/ipv6.h> | |
32 | ||
1da177e4 LT |
33 | static int sockstat6_seq_show(struct seq_file *seq, void *v) |
34 | { | |
dfb12eb7 PE |
35 | struct net *net = seq->private; |
36 | ||
1da177e4 | 37 | seq_printf(seq, "TCP6: inuse %d\n", |
dfb12eb7 | 38 | sock_prot_inuse_get(net, &tcpv6_prot)); |
1da177e4 | 39 | seq_printf(seq, "UDP6: inuse %d\n", |
dfb12eb7 | 40 | sock_prot_inuse_get(net, &udpv6_prot)); |
ba4e58ec | 41 | seq_printf(seq, "UDPLITE6: inuse %d\n", |
dfb12eb7 | 42 | sock_prot_inuse_get(net, &udplitev6_prot)); |
1da177e4 | 43 | seq_printf(seq, "RAW6: inuse %d\n", |
dfb12eb7 | 44 | sock_prot_inuse_get(net, &rawv6_prot)); |
1da177e4 | 45 | seq_printf(seq, "FRAG6: inuse %d memory %d\n", |
dfb12eb7 | 46 | ip6_frag_nqueues(net), ip6_frag_mem(net)); |
1da177e4 LT |
47 | return 0; |
48 | } | |
49 | ||
35f0a5df DL |
50 | static int sockstat6_seq_open(struct inode *inode, struct file *file) |
51 | { | |
52 | return single_open_net(inode, file, sockstat6_seq_show); | |
53 | } | |
54 | ||
55 | static 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 | ||
5833929c | 63 | static const struct snmp_mib snmp6_ipstats_list[] = { |
1da177e4 | 64 | /* ipv6 mib according to RFC 2465 */ |
edf391ff | 65 | SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS), |
1da177e4 LT |
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), | |
edf391ff | 75 | SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS), |
1da177e4 LT |
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), | |
edf391ff NH |
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), | |
1da177e4 LT |
93 | SNMP_MIB_SENTINEL |
94 | }; | |
95 | ||
5833929c | 96 | static const struct snmp_mib snmp6_icmp6_list[] = { |
14878f75 | 97 | /* icmpv6 mib according to RFC 2466 */ |
1da177e4 LT |
98 | SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), |
99 | SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), | |
1da177e4 | 100 | SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), |
1f8438a8 | 101 | SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS), |
1da177e4 LT |
102 | SNMP_MIB_SENTINEL |
103 | }; | |
104 | ||
14878f75 | 105 | /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */ |
36cbd3dc | 106 | static const char *const icmp6type2name[256] = { |
14878f75 DS |
107 | [ICMPV6_DEST_UNREACH] = "DestUnreachs", |
108 | [ICMPV6_PKT_TOOBIG] = "PktTooBigs", | |
109 | [ICMPV6_TIME_EXCEED] = "TimeExcds", | |
110 | [ICMPV6_PARAMPROB] = "ParmProblems", | |
fa95c283 | 111 | [ICMPV6_ECHO_REQUEST] = "Echos", |
14878f75 DS |
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", | |
fa95c283 | 121 | [NDISC_REDIRECT] = "Redirects", |
14878f75 DS |
122 | }; |
123 | ||
124 | ||
5833929c | 125 | static const struct snmp_mib snmp6_udp6_list[] = { |
1da177e4 LT |
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), | |
870be392 ED |
130 | SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
131 | SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS), | |
1da177e4 LT |
132 | SNMP_MIB_SENTINEL |
133 | }; | |
134 | ||
5833929c | 135 | static const struct snmp_mib snmp6_udplite6_list[] = { |
ba4e58ec GR |
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), | |
870be392 ED |
140 | SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
141 | SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS), | |
ba4e58ec GR |
142 | SNMP_MIB_SENTINEL |
143 | }; | |
144 | ||
be281e55 ED |
145 | /* can be called either with percpu mib (pcpumib != NULL), |
146 | * or shared one (smib != NULL) | |
147 | */ | |
148 | static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **pcpumib, | |
149 | atomic_long_t *smib) | |
14878f75 | 150 | { |
5ece6c2d | 151 | char name[32]; |
14878f75 DS |
152 | int i; |
153 | ||
154 | /* print by name -- deprecated items */ | |
155 | for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { | |
156 | int icmptype; | |
36cbd3dc | 157 | const char *p; |
14878f75 DS |
158 | |
159 | icmptype = i & 0xff; | |
160 | p = icmp6type2name[icmptype]; | |
161 | if (!p) /* don't print un-named types here */ | |
162 | continue; | |
5ece6c2d | 163 | snprintf(name, sizeof(name), "Icmp6%s%s", |
14878f75 DS |
164 | i & 0x100 ? "Out" : "In", p); |
165 | seq_printf(seq, "%-32s\t%lu\n", name, | |
be281e55 | 166 | pcpumib ? snmp_fold_field(pcpumib, i) : atomic_long_read(smib + i)); |
14878f75 DS |
167 | } |
168 | ||
169 | /* print by number (nonzero only) - ICMPMsgStat format */ | |
170 | for (i = 0; i < ICMP6MSG_MIB_MAX; i++) { | |
171 | unsigned long val; | |
172 | ||
be281e55 | 173 | val = pcpumib ? snmp_fold_field(pcpumib, i) : atomic_long_read(smib + i); |
14878f75 DS |
174 | if (!val) |
175 | continue; | |
5ece6c2d | 176 | snprintf(name, sizeof(name), "Icmp6%sType%u", |
14878f75 DS |
177 | i & 0x100 ? "Out" : "In", i & 0xff); |
178 | seq_printf(seq, "%-32s\t%lu\n", name, val); | |
179 | } | |
14878f75 DS |
180 | } |
181 | ||
be281e55 ED |
182 | /* can be called either with percpu mib (pcpumib != NULL), |
183 | * or shared one (smib != NULL) | |
184 | */ | |
185 | static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib, | |
186 | atomic_long_t *smib, | |
5833929c | 187 | const struct snmp_mib *itemlist) |
1da177e4 LT |
188 | { |
189 | int i; | |
be281e55 | 190 | unsigned long val; |
4ce3c183 | 191 | |
be281e55 ED |
192 | for (i = 0; itemlist[i].name; i++) { |
193 | val = pcpumib ? | |
194 | snmp_fold_field(pcpumib, itemlist[i].entry) : | |
195 | atomic_long_read(smib + itemlist[i].entry); | |
196 | seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, val); | |
197 | } | |
1da177e4 LT |
198 | } |
199 | ||
4ce3c183 ED |
200 | static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib, |
201 | const struct snmp_mib *itemlist, size_t syncpoff) | |
202 | { | |
203 | int i; | |
204 | ||
205 | for (i = 0; itemlist[i].name; i++) | |
206 | seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, | |
207 | snmp_fold_field64(mib, itemlist[i].entry, syncpoff)); | |
208 | } | |
209 | ||
1da177e4 LT |
210 | static int snmp6_seq_show(struct seq_file *seq, void *v) |
211 | { | |
2b4209e4 DL |
212 | struct net *net = (struct net *)seq->private; |
213 | ||
4ce3c183 ED |
214 | snmp6_seq_show_item64(seq, (void __percpu **)net->mib.ipv6_statistics, |
215 | snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp)); | |
7d720c3e | 216 | snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics, |
be281e55 | 217 | NULL, snmp6_icmp6_list); |
7d720c3e | 218 | snmp6_seq_show_icmpv6msg(seq, |
be281e55 | 219 | (void __percpu **)net->mib.icmpv6msg_statistics, NULL); |
7d720c3e | 220 | snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6, |
be281e55 | 221 | NULL, snmp6_udp6_list); |
7d720c3e | 222 | snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6, |
be281e55 | 223 | NULL, snmp6_udplite6_list); |
1da177e4 LT |
224 | return 0; |
225 | } | |
226 | ||
1da177e4 LT |
227 | static int snmp6_seq_open(struct inode *inode, struct file *file) |
228 | { | |
2b4209e4 | 229 | return single_open_net(inode, file, snmp6_seq_show); |
1da177e4 LT |
230 | } |
231 | ||
9a32144e | 232 | static const struct file_operations snmp6_seq_fops = { |
1da177e4 LT |
233 | .owner = THIS_MODULE, |
234 | .open = snmp6_seq_open, | |
235 | .read = seq_read, | |
236 | .llseek = seq_lseek, | |
2b4209e4 | 237 | .release = single_release_net, |
1da177e4 LT |
238 | }; |
239 | ||
7b43ccec DL |
240 | static int snmp6_dev_seq_show(struct seq_file *seq, void *v) |
241 | { | |
242 | struct inet6_dev *idev = (struct inet6_dev *)seq->private; | |
243 | ||
244 | seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); | |
be281e55 | 245 | snmp6_seq_show_item(seq, (void __percpu **)idev->stats.ipv6, NULL, |
7d720c3e | 246 | snmp6_ipstats_list); |
be281e55 | 247 | snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs, |
7d720c3e | 248 | snmp6_icmp6_list); |
be281e55 | 249 | snmp6_seq_show_icmpv6msg(seq, NULL, idev->stats.icmpv6msgdev->mibs); |
7b43ccec DL |
250 | return 0; |
251 | } | |
252 | ||
253 | static int snmp6_dev_seq_open(struct inode *inode, struct file *file) | |
254 | { | |
255 | return single_open(file, snmp6_dev_seq_show, PDE(inode)->data); | |
256 | } | |
257 | ||
258 | static const struct file_operations snmp6_dev_seq_fops = { | |
259 | .owner = THIS_MODULE, | |
260 | .open = snmp6_dev_seq_open, | |
261 | .read = seq_read, | |
262 | .llseek = seq_lseek, | |
263 | .release = single_release, | |
264 | }; | |
265 | ||
1da177e4 LT |
266 | int snmp6_register_dev(struct inet6_dev *idev) |
267 | { | |
268 | struct proc_dir_entry *p; | |
835bcc04 | 269 | struct net *net; |
1da177e4 LT |
270 | |
271 | if (!idev || !idev->dev) | |
272 | return -EINVAL; | |
273 | ||
835bcc04 | 274 | net = dev_net(idev->dev); |
835bcc04 | 275 | if (!net->mib.proc_net_devsnmp6) |
1da177e4 LT |
276 | return -ENOENT; |
277 | ||
0bb53a66 | 278 | p = proc_create_data(idev->dev->name, S_IRUGO, |
7b43ccec DL |
279 | net->mib.proc_net_devsnmp6, |
280 | &snmp6_dev_seq_fops, idev); | |
1da177e4 LT |
281 | if (!p) |
282 | return -ENOMEM; | |
283 | ||
1da177e4 LT |
284 | idev->stats.proc_dir_entry = p; |
285 | return 0; | |
286 | } | |
287 | ||
288 | int snmp6_unregister_dev(struct inet6_dev *idev) | |
289 | { | |
835bcc04 DL |
290 | struct net *net = dev_net(idev->dev); |
291 | if (!net->mib.proc_net_devsnmp6) | |
1da177e4 | 292 | return -ENOENT; |
c3f6c21d | 293 | if (!idev->stats.proc_dir_entry) |
1da177e4 LT |
294 | return -EINVAL; |
295 | remove_proc_entry(idev->stats.proc_dir_entry->name, | |
835bcc04 | 296 | net->mib.proc_net_devsnmp6); |
5632c515 | 297 | idev->stats.proc_dir_entry = NULL; |
1da177e4 LT |
298 | return 0; |
299 | } | |
300 | ||
2c8c1e72 | 301 | static int __net_init ipv6_proc_init_net(struct net *net) |
d0538ca3 PE |
302 | { |
303 | if (!proc_net_fops_create(net, "sockstat6", S_IRUGO, | |
304 | &sockstat6_seq_fops)) | |
305 | return -ENOMEM; | |
06f38527 DL |
306 | |
307 | if (!proc_net_fops_create(net, "snmp6", S_IRUGO, &snmp6_seq_fops)) | |
308 | goto proc_snmp6_fail; | |
309 | ||
310 | net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net); | |
311 | if (!net->mib.proc_net_devsnmp6) | |
312 | goto proc_dev_snmp6_fail; | |
d0538ca3 | 313 | return 0; |
06f38527 DL |
314 | |
315 | proc_snmp6_fail: | |
316 | proc_net_remove(net, "sockstat6"); | |
317 | proc_dev_snmp6_fail: | |
318 | proc_net_remove(net, "dev_snmp6"); | |
319 | return -ENOMEM; | |
d0538ca3 PE |
320 | } |
321 | ||
2c8c1e72 | 322 | static void __net_exit ipv6_proc_exit_net(struct net *net) |
d0538ca3 PE |
323 | { |
324 | proc_net_remove(net, "sockstat6"); | |
06f38527 DL |
325 | proc_net_remove(net, "dev_snmp6"); |
326 | proc_net_remove(net, "snmp6"); | |
d0538ca3 PE |
327 | } |
328 | ||
329 | static struct pernet_operations ipv6_proc_ops = { | |
330 | .init = ipv6_proc_init_net, | |
331 | .exit = ipv6_proc_exit_net, | |
332 | }; | |
333 | ||
1da177e4 LT |
334 | int __init ipv6_misc_proc_init(void) |
335 | { | |
06f38527 | 336 | return register_pernet_subsys(&ipv6_proc_ops); |
1da177e4 LT |
337 | } |
338 | ||
339 | void ipv6_misc_proc_exit(void) | |
340 | { | |
d0538ca3 | 341 | unregister_pernet_subsys(&ipv6_proc_ops); |
1da177e4 LT |
342 | } |
343 |