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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 | * | |
10 | * Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $ | |
11 | * | |
12 | * Authors: David S. Miller (davem@caip.rutgers.edu) | |
13 | * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * as published by the Free Software Foundation; either version | |
18 | * 2 of the License, or (at your option) any later version. | |
19 | */ | |
1da177e4 LT |
20 | #include <linux/socket.h> |
21 | #include <linux/net.h> | |
22 | #include <linux/ipv6.h> | |
23 | #include <linux/proc_fs.h> | |
24 | #include <linux/seq_file.h> | |
25 | #include <linux/stddef.h> | |
7f7d9a6b | 26 | #include <net/ip.h> |
1da177e4 LT |
27 | #include <net/sock.h> |
28 | #include <net/tcp.h> | |
29 | #include <net/transp_v6.h> | |
30 | #include <net/ipv6.h> | |
31 | ||
1da177e4 LT |
32 | static struct proc_dir_entry *proc_net_devsnmp6; |
33 | ||
34 | static int fold_prot_inuse(struct proto *proto) | |
35 | { | |
36 | int res = 0; | |
37 | int cpu; | |
38 | ||
6f912042 | 39 | for_each_possible_cpu(cpu) |
1da177e4 LT |
40 | res += proto->stats[cpu].inuse; |
41 | ||
42 | return res; | |
43 | } | |
44 | ||
45 | static int sockstat6_seq_show(struct seq_file *seq, void *v) | |
46 | { | |
47 | seq_printf(seq, "TCP6: inuse %d\n", | |
48 | fold_prot_inuse(&tcpv6_prot)); | |
49 | seq_printf(seq, "UDP6: inuse %d\n", | |
50 | fold_prot_inuse(&udpv6_prot)); | |
ba4e58ec | 51 | seq_printf(seq, "UDPLITE6: inuse %d\n", |
1ab1457c | 52 | fold_prot_inuse(&udplitev6_prot)); |
1da177e4 LT |
53 | seq_printf(seq, "RAW6: inuse %d\n", |
54 | fold_prot_inuse(&rawv6_prot)); | |
55 | seq_printf(seq, "FRAG6: inuse %d memory %d\n", | |
56 | ip6_frag_nqueues, atomic_read(&ip6_frag_mem)); | |
57 | return 0; | |
58 | } | |
59 | ||
60 | static struct snmp_mib snmp6_ipstats_list[] = { | |
61 | /* ipv6 mib according to RFC 2465 */ | |
62 | SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES), | |
63 | SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS), | |
64 | SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS), | |
65 | SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES), | |
66 | SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS), | |
67 | SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), | |
68 | SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), | |
69 | SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS), | |
70 | SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS), | |
71 | SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), | |
72 | SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS), | |
73 | SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS), | |
74 | SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), | |
75 | SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), | |
76 | SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS), | |
77 | SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS), | |
78 | SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS), | |
79 | SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS), | |
80 | SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS), | |
81 | SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES), | |
82 | SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS), | |
83 | SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), | |
84 | SNMP_MIB_SENTINEL | |
85 | }; | |
86 | ||
87 | static struct snmp_mib snmp6_icmp6_list[] = { | |
88 | /* icmpv6 mib according to RFC 2466 | |
89 | ||
90 | Exceptions: {In|Out}AdminProhibs are removed, because I see | |
1ab1457c | 91 | no good reasons to account them separately |
1da177e4 LT |
92 | of another dest.unreachs. |
93 | OutErrs is zero identically. | |
94 | OutEchos too. | |
95 | OutRouterAdvertisements too. | |
96 | OutGroupMembQueries too. | |
97 | */ | |
98 | SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS), | |
99 | SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS), | |
100 | SNMP_MIB_ITEM("Icmp6InDestUnreachs", ICMP6_MIB_INDESTUNREACHS), | |
101 | SNMP_MIB_ITEM("Icmp6InPktTooBigs", ICMP6_MIB_INPKTTOOBIGS), | |
102 | SNMP_MIB_ITEM("Icmp6InTimeExcds", ICMP6_MIB_INTIMEEXCDS), | |
103 | SNMP_MIB_ITEM("Icmp6InParmProblems", ICMP6_MIB_INPARMPROBLEMS), | |
104 | SNMP_MIB_ITEM("Icmp6InEchos", ICMP6_MIB_INECHOS), | |
105 | SNMP_MIB_ITEM("Icmp6InEchoReplies", ICMP6_MIB_INECHOREPLIES), | |
106 | SNMP_MIB_ITEM("Icmp6InGroupMembQueries", ICMP6_MIB_INGROUPMEMBQUERIES), | |
107 | SNMP_MIB_ITEM("Icmp6InGroupMembResponses", ICMP6_MIB_INGROUPMEMBRESPONSES), | |
108 | SNMP_MIB_ITEM("Icmp6InGroupMembReductions", ICMP6_MIB_INGROUPMEMBREDUCTIONS), | |
109 | SNMP_MIB_ITEM("Icmp6InRouterSolicits", ICMP6_MIB_INROUTERSOLICITS), | |
110 | SNMP_MIB_ITEM("Icmp6InRouterAdvertisements", ICMP6_MIB_INROUTERADVERTISEMENTS), | |
111 | SNMP_MIB_ITEM("Icmp6InNeighborSolicits", ICMP6_MIB_INNEIGHBORSOLICITS), | |
112 | SNMP_MIB_ITEM("Icmp6InNeighborAdvertisements", ICMP6_MIB_INNEIGHBORADVERTISEMENTS), | |
113 | SNMP_MIB_ITEM("Icmp6InRedirects", ICMP6_MIB_INREDIRECTS), | |
114 | SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS), | |
115 | SNMP_MIB_ITEM("Icmp6OutDestUnreachs", ICMP6_MIB_OUTDESTUNREACHS), | |
116 | SNMP_MIB_ITEM("Icmp6OutPktTooBigs", ICMP6_MIB_OUTPKTTOOBIGS), | |
117 | SNMP_MIB_ITEM("Icmp6OutTimeExcds", ICMP6_MIB_OUTTIMEEXCDS), | |
118 | SNMP_MIB_ITEM("Icmp6OutParmProblems", ICMP6_MIB_OUTPARMPROBLEMS), | |
119 | SNMP_MIB_ITEM("Icmp6OutEchoReplies", ICMP6_MIB_OUTECHOREPLIES), | |
120 | SNMP_MIB_ITEM("Icmp6OutRouterSolicits", ICMP6_MIB_OUTROUTERSOLICITS), | |
121 | SNMP_MIB_ITEM("Icmp6OutNeighborSolicits", ICMP6_MIB_OUTNEIGHBORSOLICITS), | |
122 | SNMP_MIB_ITEM("Icmp6OutNeighborAdvertisements", ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS), | |
123 | SNMP_MIB_ITEM("Icmp6OutRedirects", ICMP6_MIB_OUTREDIRECTS), | |
124 | SNMP_MIB_ITEM("Icmp6OutGroupMembResponses", ICMP6_MIB_OUTGROUPMEMBRESPONSES), | |
125 | SNMP_MIB_ITEM("Icmp6OutGroupMembReductions", ICMP6_MIB_OUTGROUPMEMBREDUCTIONS), | |
126 | SNMP_MIB_SENTINEL | |
127 | }; | |
128 | ||
129 | static struct snmp_mib snmp6_udp6_list[] = { | |
130 | SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS), | |
131 | SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS), | |
132 | SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS), | |
133 | SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS), | |
134 | SNMP_MIB_SENTINEL | |
135 | }; | |
136 | ||
ba4e58ec GR |
137 | static struct snmp_mib snmp6_udplite6_list[] = { |
138 | SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS), | |
139 | SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS), | |
140 | SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS), | |
141 | SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS), | |
142 | SNMP_MIB_SENTINEL | |
143 | }; | |
144 | ||
1da177e4 LT |
145 | static inline void |
146 | snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist) | |
147 | { | |
148 | int i; | |
149 | for (i=0; itemlist[i].name; i++) | |
1ab1457c | 150 | seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, |
7f7d9a6b | 151 | snmp_fold_field(mib, itemlist[i].entry)); |
1da177e4 LT |
152 | } |
153 | ||
154 | static int snmp6_seq_show(struct seq_file *seq, void *v) | |
155 | { | |
156 | struct inet6_dev *idev = (struct inet6_dev *)seq->private; | |
157 | ||
158 | if (idev) { | |
159 | seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex); | |
a11d206d | 160 | snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list); |
1da177e4 LT |
161 | snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list); |
162 | } else { | |
163 | snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list); | |
164 | snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list); | |
165 | snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list); | |
ba4e58ec | 166 | snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list); |
1da177e4 LT |
167 | } |
168 | return 0; | |
169 | } | |
170 | ||
171 | static int sockstat6_seq_open(struct inode *inode, struct file *file) | |
172 | { | |
173 | return single_open(file, sockstat6_seq_show, NULL); | |
174 | } | |
175 | ||
9a32144e | 176 | static const struct file_operations sockstat6_seq_fops = { |
1da177e4 LT |
177 | .owner = THIS_MODULE, |
178 | .open = sockstat6_seq_open, | |
179 | .read = seq_read, | |
180 | .llseek = seq_lseek, | |
181 | .release = single_release, | |
182 | }; | |
183 | ||
184 | static int snmp6_seq_open(struct inode *inode, struct file *file) | |
185 | { | |
186 | return single_open(file, snmp6_seq_show, PDE(inode)->data); | |
187 | } | |
188 | ||
9a32144e | 189 | static const struct file_operations snmp6_seq_fops = { |
1da177e4 LT |
190 | .owner = THIS_MODULE, |
191 | .open = snmp6_seq_open, | |
192 | .read = seq_read, | |
193 | .llseek = seq_lseek, | |
194 | .release = single_release, | |
195 | }; | |
196 | ||
197 | int snmp6_register_dev(struct inet6_dev *idev) | |
198 | { | |
199 | struct proc_dir_entry *p; | |
200 | ||
201 | if (!idev || !idev->dev) | |
202 | return -EINVAL; | |
203 | ||
204 | if (!proc_net_devsnmp6) | |
205 | return -ENOENT; | |
206 | ||
207 | p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6); | |
208 | if (!p) | |
209 | return -ENOMEM; | |
210 | ||
211 | p->data = idev; | |
212 | p->proc_fops = &snmp6_seq_fops; | |
213 | ||
214 | idev->stats.proc_dir_entry = p; | |
215 | return 0; | |
216 | } | |
217 | ||
218 | int snmp6_unregister_dev(struct inet6_dev *idev) | |
219 | { | |
220 | if (!proc_net_devsnmp6) | |
221 | return -ENOENT; | |
222 | if (!idev || !idev->stats.proc_dir_entry) | |
223 | return -EINVAL; | |
224 | remove_proc_entry(idev->stats.proc_dir_entry->name, | |
225 | proc_net_devsnmp6); | |
5632c515 | 226 | idev->stats.proc_dir_entry = NULL; |
1da177e4 LT |
227 | return 0; |
228 | } | |
229 | ||
230 | int __init ipv6_misc_proc_init(void) | |
231 | { | |
232 | int rc = 0; | |
233 | ||
234 | if (!proc_net_fops_create("snmp6", S_IRUGO, &snmp6_seq_fops)) | |
235 | goto proc_snmp6_fail; | |
236 | ||
237 | proc_net_devsnmp6 = proc_mkdir("dev_snmp6", proc_net); | |
238 | if (!proc_net_devsnmp6) | |
239 | goto proc_dev_snmp6_fail; | |
240 | ||
241 | if (!proc_net_fops_create("sockstat6", S_IRUGO, &sockstat6_seq_fops)) | |
242 | goto proc_sockstat6_fail; | |
243 | out: | |
244 | return rc; | |
245 | ||
246 | proc_sockstat6_fail: | |
247 | proc_net_remove("dev_snmp6"); | |
248 | proc_dev_snmp6_fail: | |
249 | proc_net_remove("snmp6"); | |
250 | proc_snmp6_fail: | |
251 | rc = -ENOMEM; | |
252 | goto out; | |
253 | } | |
254 | ||
255 | void ipv6_misc_proc_exit(void) | |
256 | { | |
257 | proc_net_remove("sockstat6"); | |
258 | proc_net_remove("dev_snmp6"); | |
259 | proc_net_remove("snmp6"); | |
260 | } | |
261 |