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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 */
20#include <linux/config.h>
21#include <linux/sched.h>
22#include <linux/socket.h>
23#include <linux/net.h>
24#include <linux/ipv6.h>
25#include <linux/proc_fs.h>
26#include <linux/seq_file.h>
27#include <linux/stddef.h>
28#include <net/sock.h>
29#include <net/tcp.h>
30#include <net/transp_v6.h>
31#include <net/ipv6.h>
32
33#ifdef CONFIG_PROC_FS
34static struct proc_dir_entry *proc_net_devsnmp6;
35
36static int fold_prot_inuse(struct proto *proto)
37{
38 int res = 0;
39 int cpu;
40
Eric Dumazet88a2a4ac2006-02-04 23:27:36 -080041 for_each_cpu(cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 res += proto->stats[cpu].inuse;
43
44 return res;
45}
46
47static int sockstat6_seq_show(struct seq_file *seq, void *v)
48{
49 seq_printf(seq, "TCP6: inuse %d\n",
50 fold_prot_inuse(&tcpv6_prot));
51 seq_printf(seq, "UDP6: inuse %d\n",
52 fold_prot_inuse(&udpv6_prot));
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
60static 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
87static struct snmp_mib snmp6_icmp6_list[] = {
88/* icmpv6 mib according to RFC 2466
89
90 Exceptions: {In|Out}AdminProhibs are removed, because I see
91 no good reasons to account them separately
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
129static 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
137static unsigned long
138fold_field(void *mib[], int offt)
139{
140 unsigned long res = 0;
141 int i;
142
John Hawkes670c02c2005-10-13 09:30:31 -0700143 for_each_cpu(i) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt);
145 res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt);
146 }
147 return res;
148}
149
150static inline void
151snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
152{
153 int i;
154 for (i=0; itemlist[i].name; i++)
155 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
156 fold_field(mib, itemlist[i].entry));
157}
158
159static int snmp6_seq_show(struct seq_file *seq, void *v)
160{
161 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
162
163 if (idev) {
164 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
165 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
166 } else {
167 snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
168 snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
169 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
170 }
171 return 0;
172}
173
174static int sockstat6_seq_open(struct inode *inode, struct file *file)
175{
176 return single_open(file, sockstat6_seq_show, NULL);
177}
178
179static struct file_operations sockstat6_seq_fops = {
180 .owner = THIS_MODULE,
181 .open = sockstat6_seq_open,
182 .read = seq_read,
183 .llseek = seq_lseek,
184 .release = single_release,
185};
186
187static int snmp6_seq_open(struct inode *inode, struct file *file)
188{
189 return single_open(file, snmp6_seq_show, PDE(inode)->data);
190}
191
192static struct file_operations snmp6_seq_fops = {
193 .owner = THIS_MODULE,
194 .open = snmp6_seq_open,
195 .read = seq_read,
196 .llseek = seq_lseek,
197 .release = single_release,
198};
199
200int snmp6_register_dev(struct inet6_dev *idev)
201{
202 struct proc_dir_entry *p;
203
204 if (!idev || !idev->dev)
205 return -EINVAL;
206
207 if (!proc_net_devsnmp6)
208 return -ENOENT;
209
210 p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
211 if (!p)
212 return -ENOMEM;
213
214 p->data = idev;
215 p->proc_fops = &snmp6_seq_fops;
216
217 idev->stats.proc_dir_entry = p;
218 return 0;
219}
220
221int snmp6_unregister_dev(struct inet6_dev *idev)
222{
223 if (!proc_net_devsnmp6)
224 return -ENOENT;
225 if (!idev || !idev->stats.proc_dir_entry)
226 return -EINVAL;
227 remove_proc_entry(idev->stats.proc_dir_entry->name,
228 proc_net_devsnmp6);
229 return 0;
230}
231
232int __init ipv6_misc_proc_init(void)
233{
234 int rc = 0;
235
236 if (!proc_net_fops_create("snmp6", S_IRUGO, &snmp6_seq_fops))
237 goto proc_snmp6_fail;
238
239 proc_net_devsnmp6 = proc_mkdir("dev_snmp6", proc_net);
240 if (!proc_net_devsnmp6)
241 goto proc_dev_snmp6_fail;
242
243 if (!proc_net_fops_create("sockstat6", S_IRUGO, &sockstat6_seq_fops))
244 goto proc_sockstat6_fail;
245out:
246 return rc;
247
248proc_sockstat6_fail:
249 proc_net_remove("dev_snmp6");
250proc_dev_snmp6_fail:
251 proc_net_remove("snmp6");
252proc_snmp6_fail:
253 rc = -ENOMEM;
254 goto out;
255}
256
257void ipv6_misc_proc_exit(void)
258{
259 proc_net_remove("sockstat6");
260 proc_net_remove("dev_snmp6");
261 proc_net_remove("snmp6");
262}
263
264#else /* CONFIG_PROC_FS */
265
266
267int snmp6_register_dev(struct inet6_dev *idev)
268{
269 return 0;
270}
271
272int snmp6_unregister_dev(struct inet6_dev *idev)
273{
274 return 0;
275}
276#endif /* CONFIG_PROC_FS */
277
278int snmp6_alloc_dev(struct inet6_dev *idev)
279{
280 int err = -ENOMEM;
281
282 if (!idev || !idev->dev)
283 return -EINVAL;
284
285 if (snmp6_mib_init((void **)idev->stats.icmpv6, sizeof(struct icmpv6_mib),
286 __alignof__(struct icmpv6_mib)) < 0)
287 goto err_icmp;
288
289 return 0;
290
291err_icmp:
292 return err;
293}
294
295int snmp6_free_dev(struct inet6_dev *idev)
296{
297 snmp6_mib_free((void **)idev->stats.icmpv6);
298 return 0;
299}
300
301