Remove obsolete #include <linux/config.h>
[linux-2.6.git] / net / ipv6 / proc.c
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  */
20 #include <linux/sched.h>
21 #include <linux/socket.h>
22 #include <linux/net.h>
23 #include <linux/ipv6.h>
24 #include <linux/proc_fs.h>
25 #include <linux/seq_file.h>
26 #include <linux/stddef.h>
27 #include <net/sock.h>
28 #include <net/tcp.h>
29 #include <net/transp_v6.h>
30 #include <net/ipv6.h>
31
32 #ifdef CONFIG_PROC_FS
33 static struct proc_dir_entry *proc_net_devsnmp6;
34
35 static int fold_prot_inuse(struct proto *proto)
36 {
37         int res = 0;
38         int cpu;
39
40         for_each_possible_cpu(cpu)
41                 res += proto->stats[cpu].inuse;
42
43         return res;
44 }
45
46 static int sockstat6_seq_show(struct seq_file *seq, void *v)
47 {
48         seq_printf(seq, "TCP6: inuse %d\n",
49                        fold_prot_inuse(&tcpv6_prot));
50         seq_printf(seq, "UDP6: inuse %d\n",
51                        fold_prot_inuse(&udpv6_prot));
52         seq_printf(seq, "RAW6: inuse %d\n",
53                        fold_prot_inuse(&rawv6_prot));
54         seq_printf(seq, "FRAG6: inuse %d memory %d\n",
55                        ip6_frag_nqueues, atomic_read(&ip6_frag_mem));
56         return 0;
57 }
58
59 static struct snmp_mib snmp6_ipstats_list[] = {
60 /* ipv6 mib according to RFC 2465 */
61         SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES),
62         SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
63         SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
64         SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
65         SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
66         SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
67         SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
68         SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
69         SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
70         SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
71         SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
72         SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
73         SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
74         SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
75         SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
76         SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
77         SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
78         SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
79         SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
80         SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
81         SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
82         SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
83         SNMP_MIB_SENTINEL
84 };
85
86 static struct snmp_mib snmp6_icmp6_list[] = {
87 /* icmpv6 mib according to RFC 2466
88
89    Exceptions:  {In|Out}AdminProhibs are removed, because I see
90                 no good reasons to account them separately
91                 of another dest.unreachs.
92                 OutErrs is zero identically.
93                 OutEchos too.
94                 OutRouterAdvertisements too.
95                 OutGroupMembQueries too.
96  */
97         SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
98         SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
99         SNMP_MIB_ITEM("Icmp6InDestUnreachs", ICMP6_MIB_INDESTUNREACHS),
100         SNMP_MIB_ITEM("Icmp6InPktTooBigs", ICMP6_MIB_INPKTTOOBIGS),
101         SNMP_MIB_ITEM("Icmp6InTimeExcds", ICMP6_MIB_INTIMEEXCDS),
102         SNMP_MIB_ITEM("Icmp6InParmProblems", ICMP6_MIB_INPARMPROBLEMS),
103         SNMP_MIB_ITEM("Icmp6InEchos", ICMP6_MIB_INECHOS),
104         SNMP_MIB_ITEM("Icmp6InEchoReplies", ICMP6_MIB_INECHOREPLIES),
105         SNMP_MIB_ITEM("Icmp6InGroupMembQueries", ICMP6_MIB_INGROUPMEMBQUERIES),
106         SNMP_MIB_ITEM("Icmp6InGroupMembResponses", ICMP6_MIB_INGROUPMEMBRESPONSES),
107         SNMP_MIB_ITEM("Icmp6InGroupMembReductions", ICMP6_MIB_INGROUPMEMBREDUCTIONS),
108         SNMP_MIB_ITEM("Icmp6InRouterSolicits", ICMP6_MIB_INROUTERSOLICITS),
109         SNMP_MIB_ITEM("Icmp6InRouterAdvertisements", ICMP6_MIB_INROUTERADVERTISEMENTS),
110         SNMP_MIB_ITEM("Icmp6InNeighborSolicits", ICMP6_MIB_INNEIGHBORSOLICITS),
111         SNMP_MIB_ITEM("Icmp6InNeighborAdvertisements", ICMP6_MIB_INNEIGHBORADVERTISEMENTS),
112         SNMP_MIB_ITEM("Icmp6InRedirects", ICMP6_MIB_INREDIRECTS),
113         SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
114         SNMP_MIB_ITEM("Icmp6OutDestUnreachs", ICMP6_MIB_OUTDESTUNREACHS),
115         SNMP_MIB_ITEM("Icmp6OutPktTooBigs", ICMP6_MIB_OUTPKTTOOBIGS),
116         SNMP_MIB_ITEM("Icmp6OutTimeExcds", ICMP6_MIB_OUTTIMEEXCDS),
117         SNMP_MIB_ITEM("Icmp6OutParmProblems", ICMP6_MIB_OUTPARMPROBLEMS),
118         SNMP_MIB_ITEM("Icmp6OutEchoReplies", ICMP6_MIB_OUTECHOREPLIES),
119         SNMP_MIB_ITEM("Icmp6OutRouterSolicits", ICMP6_MIB_OUTROUTERSOLICITS),
120         SNMP_MIB_ITEM("Icmp6OutNeighborSolicits", ICMP6_MIB_OUTNEIGHBORSOLICITS),
121         SNMP_MIB_ITEM("Icmp6OutNeighborAdvertisements", ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS),
122         SNMP_MIB_ITEM("Icmp6OutRedirects", ICMP6_MIB_OUTREDIRECTS),
123         SNMP_MIB_ITEM("Icmp6OutGroupMembResponses", ICMP6_MIB_OUTGROUPMEMBRESPONSES),
124         SNMP_MIB_ITEM("Icmp6OutGroupMembReductions", ICMP6_MIB_OUTGROUPMEMBREDUCTIONS),
125         SNMP_MIB_SENTINEL
126 };
127
128 static struct snmp_mib snmp6_udp6_list[] = {
129         SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
130         SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
131         SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
132         SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
133         SNMP_MIB_SENTINEL
134 };
135
136 static unsigned long
137 fold_field(void *mib[], int offt)
138 {
139         unsigned long res = 0;
140         int i;
141  
142         for_each_possible_cpu(i) {
143                 res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt);
144                 res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt);
145         }
146         return res;
147 }
148
149 static inline void
150 snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
151 {
152         int i;
153         for (i=0; itemlist[i].name; i++)
154                 seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, 
155                                 fold_field(mib, itemlist[i].entry));
156 }
157
158 static int snmp6_seq_show(struct seq_file *seq, void *v)
159 {
160         struct inet6_dev *idev = (struct inet6_dev *)seq->private;
161
162         if (idev) {
163                 seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
164                 snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
165         } else {
166                 snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
167                 snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
168                 snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
169         }
170         return 0;
171 }
172
173 static int sockstat6_seq_open(struct inode *inode, struct file *file)
174 {
175         return single_open(file, sockstat6_seq_show, NULL);
176 }
177
178 static struct file_operations sockstat6_seq_fops = {
179         .owner   = THIS_MODULE,
180         .open    = sockstat6_seq_open,
181         .read    = seq_read,
182         .llseek  = seq_lseek,
183         .release = single_release,
184 };
185
186 static int snmp6_seq_open(struct inode *inode, struct file *file)
187 {
188         return single_open(file, snmp6_seq_show, PDE(inode)->data);
189 }
190
191 static struct file_operations snmp6_seq_fops = {
192         .owner   = THIS_MODULE,
193         .open    = snmp6_seq_open,
194         .read    = seq_read,
195         .llseek  = seq_lseek,
196         .release = single_release,
197 };
198
199 int snmp6_register_dev(struct inet6_dev *idev)
200 {
201         struct proc_dir_entry *p;
202
203         if (!idev || !idev->dev)
204                 return -EINVAL;
205
206         if (!proc_net_devsnmp6)
207                 return -ENOENT;
208
209         p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
210         if (!p)
211                 return -ENOMEM;
212
213         p->data = idev;
214         p->proc_fops = &snmp6_seq_fops;
215
216         idev->stats.proc_dir_entry = p;
217         return 0;
218 }
219
220 int snmp6_unregister_dev(struct inet6_dev *idev)
221 {
222         if (!proc_net_devsnmp6)
223                 return -ENOENT;
224         if (!idev || !idev->stats.proc_dir_entry)
225                 return -EINVAL;
226         remove_proc_entry(idev->stats.proc_dir_entry->name,
227                           proc_net_devsnmp6);
228         return 0;
229 }
230
231 int __init ipv6_misc_proc_init(void)
232 {
233         int rc = 0;
234
235         if (!proc_net_fops_create("snmp6", S_IRUGO, &snmp6_seq_fops))
236                 goto proc_snmp6_fail;
237
238         proc_net_devsnmp6 = proc_mkdir("dev_snmp6", proc_net);
239         if (!proc_net_devsnmp6)
240                 goto proc_dev_snmp6_fail;
241
242         if (!proc_net_fops_create("sockstat6", S_IRUGO, &sockstat6_seq_fops))
243                 goto proc_sockstat6_fail;
244 out:
245         return rc;
246
247 proc_sockstat6_fail:
248         proc_net_remove("dev_snmp6");
249 proc_dev_snmp6_fail:
250         proc_net_remove("snmp6");
251 proc_snmp6_fail:
252         rc = -ENOMEM;
253         goto out;
254 }
255
256 void ipv6_misc_proc_exit(void)
257 {
258         proc_net_remove("sockstat6");
259         proc_net_remove("dev_snmp6");
260         proc_net_remove("snmp6");
261 }
262
263 #else   /* CONFIG_PROC_FS */
264
265
266 int snmp6_register_dev(struct inet6_dev *idev)
267 {
268         return 0;
269 }
270
271 int snmp6_unregister_dev(struct inet6_dev *idev)
272 {
273         return 0;
274 }
275 #endif  /* CONFIG_PROC_FS */
276
277 int snmp6_alloc_dev(struct inet6_dev *idev)
278 {
279         int err = -ENOMEM;
280
281         if (!idev || !idev->dev)
282                 return -EINVAL;
283
284         if (snmp6_mib_init((void **)idev->stats.icmpv6, sizeof(struct icmpv6_mib),
285                            __alignof__(struct icmpv6_mib)) < 0)
286                 goto err_icmp;
287
288         return 0;
289
290 err_icmp:
291         return err;
292 }
293
294 int snmp6_free_dev(struct inet6_dev *idev)
295 {
296         snmp6_mib_free((void **)idev->stats.icmpv6);
297         return 0;
298 }
299
300