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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
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_OUTPKTS),
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
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_SENTINEL
88};
89
90static const struct snmp_mib snmp6_icmp6_list[] = {
91
92 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
93 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
94 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
95 SNMP_MIB_ITEM("Icmp6OutErrors", ICMP6_MIB_OUTERRORS),
96 SNMP_MIB_ITEM("Icmp6InCsumErrors", ICMP6_MIB_CSUMERRORS),
97 SNMP_MIB_SENTINEL
98};
99
100
101static const char *const icmp6type2name[256] = {
102 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
103 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
104 [ICMPV6_TIME_EXCEED] = "TimeExcds",
105 [ICMPV6_PARAMPROB] = "ParmProblems",
106 [ICMPV6_ECHO_REQUEST] = "Echos",
107 [ICMPV6_ECHO_REPLY] = "EchoReplies",
108 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
109 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
110 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
111 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
112 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
113 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
114 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
115 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
116 [NDISC_REDIRECT] = "Redirects",
117};
118
119
120static const struct snmp_mib snmp6_udp6_list[] = {
121 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
122 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
123 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
124 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
125 SNMP_MIB_ITEM("Udp6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
126 SNMP_MIB_ITEM("Udp6SndbufErrors", UDP_MIB_SNDBUFERRORS),
127 SNMP_MIB_ITEM("Udp6InCsumErrors", UDP_MIB_CSUMERRORS),
128 SNMP_MIB_ITEM("Udp6IgnoredMulti", UDP_MIB_IGNOREDMULTI),
129 SNMP_MIB_SENTINEL
130};
131
132static const struct snmp_mib snmp6_udplite6_list[] = {
133 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
134 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
135 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
136 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
137 SNMP_MIB_ITEM("UdpLite6RcvbufErrors", UDP_MIB_RCVBUFERRORS),
138 SNMP_MIB_ITEM("UdpLite6SndbufErrors", UDP_MIB_SNDBUFERRORS),
139 SNMP_MIB_ITEM("UdpLite6InCsumErrors", UDP_MIB_CSUMERRORS),
140 SNMP_MIB_SENTINEL
141};
142
143static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, atomic_long_t *smib)
144{
145 char name[32];
146 int i;
147
148
149 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
150 int icmptype;
151 const char *p;
152
153 icmptype = i & 0xff;
154 p = icmp6type2name[icmptype];
155 if (!p)
156 continue;
157 snprintf(name, sizeof(name), "Icmp6%s%s",
158 i & 0x100 ? "Out" : "In", p);
159 seq_printf(seq, "%-32s\t%lu\n", name,
160 atomic_long_read(smib + i));
161 }
162
163
164 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
165 unsigned long val;
166
167 val = atomic_long_read(smib + i);
168 if (!val)
169 continue;
170 snprintf(name, sizeof(name), "Icmp6%sType%u",
171 i & 0x100 ? "Out" : "In", i & 0xff);
172 seq_printf(seq, "%-32s\t%lu\n", name, val);
173 }
174}
175
176
177
178
179static void snmp6_seq_show_item(struct seq_file *seq, void __percpu *pcpumib,
180 atomic_long_t *smib,
181 const struct snmp_mib *itemlist)
182{
183 unsigned long buff[SNMP_MIB_MAX];
184 int i;
185
186 if (pcpumib) {
187 memset(buff, 0, sizeof(unsigned long) * SNMP_MIB_MAX);
188
189 snmp_get_cpu_field_batch(buff, itemlist, pcpumib);
190 for (i = 0; itemlist[i].name; i++)
191 seq_printf(seq, "%-32s\t%lu\n",
192 itemlist[i].name, buff[i]);
193 } else {
194 for (i = 0; itemlist[i].name; i++)
195 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
196 atomic_long_read(smib + itemlist[i].entry));
197 }
198}
199
200static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
201 const struct snmp_mib *itemlist, size_t syncpoff)
202{
203 u64 buff64[SNMP_MIB_MAX];
204 int i;
205
206 memset(buff64, 0, sizeof(u64) * SNMP_MIB_MAX);
207
208 snmp_get_cpu_field64_batch(buff64, itemlist, mib, syncpoff);
209 for (i = 0; itemlist[i].name; i++)
210 seq_printf(seq, "%-32s\t%llu\n", itemlist[i].name, buff64[i]);
211}
212
213static int snmp6_seq_show(struct seq_file *seq, void *v)
214{
215 struct net *net = (struct net *)seq->private;
216
217 snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
218 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
219 snmp6_seq_show_item(seq, net->mib.icmpv6_statistics,
220 NULL, snmp6_icmp6_list);
221 snmp6_seq_show_icmpv6msg(seq, net->mib.icmpv6msg_statistics->mibs);
222 snmp6_seq_show_item(seq, net->mib.udp_stats_in6,
223 NULL, snmp6_udp6_list);
224 snmp6_seq_show_item(seq, net->mib.udplite_stats_in6,
225 NULL, snmp6_udplite6_list);
226 return 0;
227}
228
229static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
230{
231 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
232
233 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
234 snmp6_seq_show_item64(seq, idev->stats.ipv6,
235 snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
236 snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
237 snmp6_icmp6_list);
238 snmp6_seq_show_icmpv6msg(seq, idev->stats.icmpv6msgdev->mibs);
239 return 0;
240}
241
242int snmp6_register_dev(struct inet6_dev *idev)
243{
244 struct proc_dir_entry *p;
245 struct net *net;
246
247 if (!idev || !idev->dev)
248 return -EINVAL;
249
250 net = dev_net(idev->dev);
251 if (!net->mib.proc_net_devsnmp6)
252 return -ENOENT;
253
254 p = proc_create_single_data(idev->dev->name, 0444,
255 net->mib.proc_net_devsnmp6, snmp6_dev_seq_show, idev);
256 if (!p)
257 return -ENOMEM;
258
259 idev->stats.proc_dir_entry = p;
260 return 0;
261}
262
263int snmp6_unregister_dev(struct inet6_dev *idev)
264{
265 struct net *net = dev_net(idev->dev);
266 if (!net->mib.proc_net_devsnmp6)
267 return -ENOENT;
268 if (!idev->stats.proc_dir_entry)
269 return -EINVAL;
270 proc_remove(idev->stats.proc_dir_entry);
271 idev->stats.proc_dir_entry = NULL;
272 return 0;
273}
274
275static int __net_init ipv6_proc_init_net(struct net *net)
276{
277 if (!proc_create_net_single("sockstat6", 0444, net->proc_net,
278 sockstat6_seq_show, NULL))
279 return -ENOMEM;
280
281 if (!proc_create_net_single("snmp6", 0444, net->proc_net,
282 snmp6_seq_show, NULL))
283 goto proc_snmp6_fail;
284
285 net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
286 if (!net->mib.proc_net_devsnmp6)
287 goto proc_dev_snmp6_fail;
288 return 0;
289
290proc_dev_snmp6_fail:
291 remove_proc_entry("snmp6", net->proc_net);
292proc_snmp6_fail:
293 remove_proc_entry("sockstat6", net->proc_net);
294 return -ENOMEM;
295}
296
297static void __net_exit ipv6_proc_exit_net(struct net *net)
298{
299 remove_proc_entry("sockstat6", net->proc_net);
300 remove_proc_entry("dev_snmp6", net->proc_net);
301 remove_proc_entry("snmp6", net->proc_net);
302}
303
304static struct pernet_operations ipv6_proc_ops = {
305 .init = ipv6_proc_init_net,
306 .exit = ipv6_proc_exit_net,
307};
308
309int __init ipv6_misc_proc_init(void)
310{
311 return register_pernet_subsys(&ipv6_proc_ops);
312}
313
314void ipv6_misc_proc_exit(void)
315{
316 unregister_pernet_subsys(&ipv6_proc_ops);
317}
318
