x86: support gbpages in pagetable dump
[wrt350n-kernel.git] / net / ipv6 / proc.c
blob35e502a72495f97efc72c7f386e25ca9d53f95e0
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.
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.
10 * Version: $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $
12 * Authors: David S. Miller (davem@caip.rutgers.edu)
13 * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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.
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>
26 #include <net/net_namespace.h>
27 #include <net/ip.h>
28 #include <net/sock.h>
29 #include <net/tcp.h>
30 #include <net/udp.h>
31 #include <net/transp_v6.h>
32 #include <net/ipv6.h>
34 static struct proc_dir_entry *proc_net_devsnmp6;
36 static int sockstat6_seq_show(struct seq_file *seq, void *v)
38 seq_printf(seq, "TCP6: inuse %d\n",
39 sock_prot_inuse_get(&tcpv6_prot));
40 seq_printf(seq, "UDP6: inuse %d\n",
41 sock_prot_inuse_get(&udpv6_prot));
42 seq_printf(seq, "UDPLITE6: inuse %d\n",
43 sock_prot_inuse_get(&udplitev6_prot));
44 seq_printf(seq, "RAW6: inuse %d\n",
45 sock_prot_inuse_get(&rawv6_prot));
46 seq_printf(seq, "FRAG6: inuse %d memory %d\n",
47 ip6_frag_nqueues(&init_net), ip6_frag_mem(&init_net));
48 return 0;
51 static 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
78 static struct snmp_mib snmp6_icmp6_list[] = {
79 /* icmpv6 mib according to RFC 2466 */
80 SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
81 SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
82 SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
83 SNMP_MIB_SENTINEL
86 /* RFC 4293 v6 ICMPMsgStatsTable; named items for RFC 2466 compatibility */
87 static char *icmp6type2name[256] = {
88 [ICMPV6_DEST_UNREACH] = "DestUnreachs",
89 [ICMPV6_PKT_TOOBIG] = "PktTooBigs",
90 [ICMPV6_TIME_EXCEED] = "TimeExcds",
91 [ICMPV6_PARAMPROB] = "ParmProblems",
92 [ICMPV6_ECHO_REQUEST] = "Echos",
93 [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",
102 [NDISC_REDIRECT] = "Redirects",
106 static 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
114 static 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
122 static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
124 static char name[32];
125 int i;
127 /* print by name -- deprecated items */
128 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
129 int icmptype;
130 char *p;
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));
142 /* print by number (nonzero only) - ICMPMsgStat format */
143 for (i = 0; i < ICMP6MSG_MIB_MAX; i++) {
144 unsigned long val;
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);
153 return;
156 static inline void
157 snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
159 int i;
160 for (i=0; itemlist[i].name; i++)
161 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name,
162 snmp_fold_field(mib, itemlist[i].entry));
165 static int snmp6_seq_show(struct seq_file *seq, void *v)
167 struct inet6_dev *idev = (struct inet6_dev *)seq->private;
169 if (idev) {
170 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
171 snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list);
172 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
173 snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg);
174 } 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);
177 snmp6_seq_show_icmpv6msg(seq, (void **)icmpv6msg_statistics);
178 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
179 snmp6_seq_show_item(seq, (void **)udplite_stats_in6, snmp6_udplite6_list);
181 return 0;
184 static int sockstat6_seq_open(struct inode *inode, struct file *file)
186 return single_open(file, sockstat6_seq_show, NULL);
189 static const struct file_operations sockstat6_seq_fops = {
190 .owner = THIS_MODULE,
191 .open = sockstat6_seq_open,
192 .read = seq_read,
193 .llseek = seq_lseek,
194 .release = single_release,
197 static int snmp6_seq_open(struct inode *inode, struct file *file)
199 return single_open(file, snmp6_seq_show, PDE(inode)->data);
202 static const struct file_operations snmp6_seq_fops = {
203 .owner = THIS_MODULE,
204 .open = snmp6_seq_open,
205 .read = seq_read,
206 .llseek = seq_lseek,
207 .release = single_release,
210 int snmp6_register_dev(struct inet6_dev *idev)
212 struct proc_dir_entry *p;
214 if (!idev || !idev->dev)
215 return -EINVAL;
217 if (!proc_net_devsnmp6)
218 return -ENOENT;
220 p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
221 if (!p)
222 return -ENOMEM;
224 p->data = idev;
225 p->proc_fops = &snmp6_seq_fops;
227 idev->stats.proc_dir_entry = p;
228 return 0;
231 int snmp6_unregister_dev(struct inet6_dev *idev)
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);
239 idev->stats.proc_dir_entry = NULL;
240 return 0;
243 int __init ipv6_misc_proc_init(void)
245 int rc = 0;
247 if (!proc_net_fops_create(&init_net, "snmp6", S_IRUGO, &snmp6_seq_fops))
248 goto proc_snmp6_fail;
250 proc_net_devsnmp6 = proc_mkdir("dev_snmp6", init_net.proc_net);
251 if (!proc_net_devsnmp6)
252 goto proc_dev_snmp6_fail;
254 if (!proc_net_fops_create(&init_net, "sockstat6", S_IRUGO, &sockstat6_seq_fops))
255 goto proc_sockstat6_fail;
256 out:
257 return rc;
259 proc_sockstat6_fail:
260 proc_net_remove(&init_net, "dev_snmp6");
261 proc_dev_snmp6_fail:
262 proc_net_remove(&init_net, "snmp6");
263 proc_snmp6_fail:
264 rc = -ENOMEM;
265 goto out;
268 void ipv6_misc_proc_exit(void)
270 proc_net_remove(&init_net, "sockstat6");
271 proc_net_remove(&init_net, "dev_snmp6");
272 proc_net_remove(&init_net, "snmp6");