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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
38static 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
56static const struct snmp_mib snmp6_ipstats_list[] = {
57
58 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INPKTS),
59 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
60 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
61 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
62 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
63 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
64 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
65 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
66 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
67 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
68 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTPKTS),
69 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
70 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
71 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
72 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
73 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
74 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
75 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
76 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
77 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
78 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
79 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
80 SNMP_MIB_ITEM("Ip6InOctets", IPSTATS_MIB_INOCTETS),
81 SNMP_MIB_ITEM("Ip6OutOctets", IPSTATS_MIB_OUTOCTETS),
82 SNMP_MIB_ITEM("Ip6InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
83 SNMP_MIB_ITEM("Ip6OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
84 SNMP_MIB_ITEM("Ip6InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
85 SNMP_MIB_ITEM("Ip6OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
86
87 SNMP_MIB_ITEM("Ip6InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
88 SNMP_MIB_ITEM("Ip6InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
89 SNMP_MIB_ITEM("Ip6InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
90 SNMP_MIB_ITEM("Ip6InCEPkts", IPSTATS_MIB_CEPKTS),
91 SNMP_MIB_SENTINEL
92};
93
94static const struct snmp_mib snmp6_icmp6_list[] = {
95
96 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
97 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
98 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
99 SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
100 SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
101 SNMP_MIB_SENTINEL
102};
103
104
105static const char *const icmp6type2name[256] = {
106 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
107 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
108 [ICMPV6_TIME_EXCEED] = "TimeExcds",
109 [ICMPV6_PARAMPROB] = "ParmProblems",
110 [ICMPV6_ECHO_REQUEST] = "Echos",
111 [ICMPV6_ECHO_REPLY] = "EchoReplies",
112 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
113 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
114 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
115 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
116 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
117 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
118 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
119 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
120 [NDISC_REDIRECT] = "Redirects",
121};
122
123
124static const struct snmp_mib snmp6_udp6_list[] = {
125 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
126 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
127 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
128 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
129 SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
130 SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
131 SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
132 SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
133 SNMP_MIB_SENTINEL
134};
135
136static const struct snmp_mib snmp6_udplite6_list[] = {
137 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
138 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
139 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
140 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
141 SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
142 SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
143 SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
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
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)
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
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
181
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}
322
