blob: 41e9980b3e0ebbb8612cc8d177a7b7a9059bbee0 [file] [log] [blame]
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#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>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020026#include <net/net_namespace.h>
Herbert Xu7f7d9a62007-04-24 21:54:09 -070027#include <net/ip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <net/sock.h>
29#include <net/tcp.h>
Herbert Xu1781f7f2007-12-11 11:30:32 -080030#include <net/udp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <net/transp_v6.h>
32#include <net/ipv6.h>
33
Linus Torvalds1da177e2005-04-16 15:20:36 -070034static struct proc_dir_entry *proc_net_devsnmp6;
35
Linus Torvalds1da177e2005-04-16 15:20:36 -070036static int sockstat6_seq_show(struct seq_file *seq, void *v)
37{
38 seq_printf(seq, "TCP6: inuse %d\n",
Eric Dumazet286ab3d2007-11-05 23:38:39 -080039 sock_prot_inuse(&tcpv6_prot));
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 seq_printf(seq, "UDP6: inuse %d\n",
Eric Dumazet286ab3d2007-11-05 23:38:39 -080041 sock_prot_inuse(&udpv6_prot));
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080042 seq_printf(seq, "UDPLITE6: inuse %d\n",
Eric Dumazet286ab3d2007-11-05 23:38:39 -080043 sock_prot_inuse(&udplitev6_prot));
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 seq_printf(seq, "RAW6: inuse %d\n",
Eric Dumazet286ab3d2007-11-05 23:38:39 -080045 sock_prot_inuse(&rawv6_prot));
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 seq_printf(seq, "FRAG6: inuse %d memory %d\n",
Pavel Emelyanov7eb95152007-10-15 02:31:52 -070047 ip6_frag_nqueues(), ip6_frag_mem());
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 return 0;
49}
50
51static struct snmp_mib snmp6_ipstats_list[] = {
52/* ipv6 mib according to RFC 2465 */
53 SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES),
54 SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
55 SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
56 SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
57 SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
58 SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
59 SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
60 SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
61 SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
62 SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
63 SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
64 SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
65 SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
66 SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
67 SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
68 SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
69 SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
70 SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
71 SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
72 SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
73 SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
74 SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
75 SNMP_MIB_SENTINEL
76};
77
78static struct snmp_mib snmp6_icmp6_list[] = {
David L Stevens14878f72007-09-16 16:52:35 -070079/* icmpv6 mib according to RFC 2466 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
81 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 SNMP_MIB_SENTINEL
84};
85
David L Stevens14878f72007-09-16 16:52:35 -070086/* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
87static char *icmp6type2name[256] = {
88 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
89 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
90 [ICMPV6_TIME_EXCEED] = "TimeExcds",
91 [ICMPV6_PARAMPROB] = "ParmProblems",
Wang Chenfa95c282008-01-21 03:05:43 -080092 [ICMPV6_ECHO_REQUEST] = "Echos",
David L Stevens14878f72007-09-16 16:52:35 -070093 [ICMPV6_ECHO_REPLY] = "EchoReplies",
94 [ICMPV6_MGM_QUERY] = "GroupMembQueries",
95 [ICMPV6_MGM_REPORT] = "GroupMembResponses",
96 [ICMPV6_MGM_REDUCTION] = "GroupMembReductions",
97 [ICMPV6_MLD2_REPORT] = "MLDv2Reports",
98 [NDISC_ROUTER_ADVERTISEMENT] = "RouterAdvertisements",
99 [NDISC_ROUTER_SOLICITATION] = "RouterSolicits",
100 [NDISC_NEIGHBOUR_ADVERTISEMENT] = "NeighborAdvertisements",
101 [NDISC_NEIGHBOUR_SOLICITATION] = "NeighborSolicits",
Wang Chenfa95c282008-01-21 03:05:43 -0800102 [NDISC_REDIRECT] = "Redirects",
David L Stevens14878f72007-09-16 16:52:35 -0700103};
104
105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106static struct snmp_mib snmp6_udp6_list[] = {
107 SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
108 SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
109 SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
110 SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
111 SNMP_MIB_SENTINEL
112};
113
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800114static struct snmp_mib snmp6_udplite6_list[] = {
115 SNMP_MIB_ITEM("UdpLite6InDatagrams", UDP_MIB_INDATAGRAMS),
116 SNMP_MIB_ITEM("UdpLite6NoPorts", UDP_MIB_NOPORTS),
117 SNMP_MIB_ITEM("UdpLite6InErrors", UDP_MIB_INERRORS),
118 SNMP_MIB_ITEM("UdpLite6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
119 SNMP_MIB_SENTINEL
120};
121
David L Stevens14878f72007-09-16 16:52:35 -0700122static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
123{
124 static char name[32];
125 int i;
126
127 /* print by name -- deprecated items */
128 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
129 int icmptype;
130 char *p;
131
132 icmptype = i & 0xff;
133 p = icmp6type2name[icmptype];
134 if (!p) /* don't print un-named types here */
135 continue;
136 (void) snprintf(name, sizeof(name)-1, "Icmp6%s%s",
137 i & 0x100 ? "Out" : "In", p);
138 seq_printf(seq, "%-32s\t%lu\n", name,
139 snmp_fold_field(mib, i));
140 }
141
142 /* print by number (nonzero only) - ICMPMsgStat format */
143 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
144 unsigned long val;
145
146 val = snmp_fold_field(mib, i);
147 if (!val)
148 continue;
149 (void) snprintf(name, sizeof(name)-1, "Icmp6%sType%u",
150 i & 0x100 ? "Out" : "In", i & 0xff);
151 seq_printf(seq, "%-32s\t%lu\n", name, val);
152 }
153 return;
154}
155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156static inline void
157snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
158{
159 int i;
160 for (i=0; itemlist[i].name; i++)
YOSHIFUJI Hideaki1ab14572007-02-09 23:24:49 +0900161 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
Herbert Xu7f7d9a62007-04-24 21:54:09 -0700162 snmp_fold_field(mib, itemlist[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163}
164
165static int snmp6_seq_show(struct seq_file *seq, void *v)
166{
167 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
168
169 if (idev) {
170 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
YOSHIFUJI Hideakia11d2062006-11-04 20:11:37 +0900171 snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
David L Stevens14878f72007-09-16 16:52:35 -0700173 snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 } else {
175 snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
176 snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
David L Stevens14878f72007-09-16 16:52:35 -0700177 snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800179 snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 }
181 return 0;
182}
183
184static int sockstat6_seq_open(struct inode *inode, struct file *file)
185{
186 return single_open(file, sockstat6_seq_show, NULL);
187}
188
Arjan van de Ven9a321442007-02-12 00:55:35 -0800189static const struct file_operations sockstat6_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 .owner = THIS_MODULE,
191 .open = sockstat6_seq_open,
192 .read = seq_read,
193 .llseek = seq_lseek,
194 .release = single_release,
195};
196
197static int snmp6_seq_open(struct inode *inode, struct file *file)
198{
199 return single_open(file, snmp6_seq_show, PDE(inode)->data);
200}
201
Arjan van de Ven9a321442007-02-12 00:55:35 -0800202static const struct file_operations snmp6_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 .owner = THIS_MODULE,
204 .open = snmp6_seq_open,
205 .read = seq_read,
206 .llseek = seq_lseek,
207 .release = single_release,
208};
209
210int snmp6_register_dev(struct inet6_dev *idev)
211{
212 struct proc_dir_entry *p;
213
214 if (!idev || !idev->dev)
215 return -EINVAL;
216
217 if (!proc_net_devsnmp6)
218 return -ENOENT;
219
220 p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
221 if (!p)
222 return -ENOMEM;
223
224 p->data = idev;
225 p->proc_fops = &snmp6_seq_fops;
226
227 idev->stats.proc_dir_entry = p;
228 return 0;
229}
230
231int snmp6_unregister_dev(struct inet6_dev *idev)
232{
233 if (!proc_net_devsnmp6)
234 return -ENOENT;
235 if (!idev || !idev->stats.proc_dir_entry)
236 return -EINVAL;
237 remove_proc_entry(idev->stats.proc_dir_entry->name,
238 proc_net_devsnmp6);
Stephen Hemminger5632c512007-04-28 21:16:39 -0700239 idev->stats.proc_dir_entry = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 return 0;
241}
242
243int __init ipv6_misc_proc_init(void)
244{
245 int rc = 0;
246
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200247 if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 goto proc_snmp6_fail;
249
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200250 proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 if (!proc_net_devsnmp6)
252 goto proc_dev_snmp6_fail;
253
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200254 if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 goto proc_sockstat6_fail;
256out:
257 return rc;
258
259proc_sockstat6_fail:
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200260 proc_net_remove(&init_net, "dev_snmp6");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261proc_dev_snmp6_fail:
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200262 proc_net_remove(&init_net, "snmp6");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263proc_snmp6_fail:
264 rc = -ENOMEM;
265 goto out;
266}
267
268void ipv6_misc_proc_exit(void)
269{
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200270 proc_net_remove(&init_net, "sockstat6");
271 proc_net_remove(&init_net, "dev_snmp6");
272 proc_net_remove(&init_net, "snmp6");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273}
274