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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. It is mainly used for debugging and
8 * statistics.
9 *
10 * Version: $Id: proc.c,v 1.45 2001/05/16 16:45:35 davem Exp $
11 *
12 * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
13 * Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
14 * Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
15 * Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
16 *
17 * Fixes:
18 * Alan Cox : UDP sockets show the rxqueue/txqueue
19 * using hint flag for the netinfo.
20 * Pauline Middelink : identd support
21 * Alan Cox : Make /proc safer.
22 * Erik Schoenfelder : /proc/net/snmp
23 * Alan Cox : Handle dead sockets properly.
24 * Gerhard Koerting : Show both timers
25 * Alan Cox : Allow inode to be NULL (kernel socket)
26 * Andi Kleen : Add support for open_requests and
27 * split functions for more readibility.
28 * Andi Kleen : Add support for /proc/net/netstat
29 * Arnaldo C. Melo : Convert to seq_file
30 *
31 * This program is free software; you can redistribute it and/or
32 * modify it under the terms of the GNU General Public License
33 * as published by the Free Software Foundation; either version
34 * 2 of the License, or (at your option) any later version.
35 */
36#include <linux/types.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020037#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include <net/icmp.h>
39#include <net/protocol.h>
40#include <net/tcp.h>
41#include <net/udp.h>
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080042#include <net/udplite.h>
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -020043#include <linux/inetdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <linux/proc_fs.h>
45#include <linux/seq_file.h>
46#include <net/sock.h>
47#include <net/raw.h>
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049/*
50 * Report socket allocation statistics [mea@utu.fi]
51 */
52static int sockstat_seq_show(struct seq_file *seq, void *v)
53{
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 socket_seq_show(seq);
55 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
Eric Dumazet286ab3d2007-11-05 23:38:39 -080056 sock_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
Arnaldo Carvalho de Melo295ff7e2005-08-09 20:44:40 -070057 tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 atomic_read(&tcp_memory_allocated));
Eric Dumazet286ab3d2007-11-05 23:38:39 -080059 seq_printf(seq, "UDP: inuse %d\n", sock_prot_inuse(&udp_prot));
60 seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse(&udplite_prot));
61 seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse(&raw_prot));
Pavel Emelyanov7eb95152007-10-15 02:31:52 -070062 seq_printf(seq, "FRAG: inuse %d memory %d\n",
63 ip_frag_nqueues(), ip_frag_mem());
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 return 0;
65}
66
67static int sockstat_seq_open(struct inode *inode, struct file *file)
68{
69 return single_open(file, sockstat_seq_show, NULL);
70}
71
Arjan van de Ven9a321442007-02-12 00:55:35 -080072static const struct file_operations sockstat_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 .owner = THIS_MODULE,
74 .open = sockstat_seq_open,
75 .read = seq_read,
76 .llseek = seq_lseek,
77 .release = single_release,
78};
79
Linus Torvalds1da177e2005-04-16 15:20:36 -070080/* snmp items */
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -080081static const struct snmp_mib snmp4_ipstats_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
83 SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
84 SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
85 SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
86 SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
87 SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
88 SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
89 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
90 SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
91 SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
92 SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
93 SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
94 SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
95 SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
96 SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
97 SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
98 SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
99 SNMP_MIB_SENTINEL
100};
101
Mitsuru Chinend8316662007-05-14 03:07:30 -0700102/* Following RFC4293 items are displayed in /proc/net/netstat */
103static const struct snmp_mib snmp4_ipextstats_list[] = {
104 SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
105 SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
106 SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
107 SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
108 SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
109 SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
110 SNMP_MIB_SENTINEL
111};
112
David L Stevens96793b42007-09-17 09:57:33 -0700113static struct {
114 char *name;
115 int index;
116} icmpmibmap[] = {
117 { "DestUnreachs", ICMP_DEST_UNREACH },
118 { "TimeExcds", ICMP_TIME_EXCEEDED },
119 { "ParmProbs", ICMP_PARAMETERPROB },
120 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
121 { "Redirects", ICMP_REDIRECT },
122 { "Echos", ICMP_ECHO },
123 { "EchoReps", ICMP_ECHOREPLY },
124 { "Timestamps", ICMP_TIMESTAMP },
125 { "TimestampReps", ICMP_TIMESTAMPREPLY },
126 { "AddrMasks", ICMP_ADDRESS },
127 { "AddrMaskReps", ICMP_ADDRESSREPLY },
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -0700128 { NULL, 0 }
David L Stevens96793b42007-09-17 09:57:33 -0700129};
130
131
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800132static const struct snmp_mib snmp4_tcp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
134 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
135 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
136 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
137 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
138 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
139 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
140 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
141 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
142 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
143 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
144 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
145 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
146 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
147 SNMP_MIB_SENTINEL
148};
149
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800150static const struct snmp_mib snmp4_udp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
152 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
153 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
154 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
Martin Bligh81aa6462006-08-14 23:57:10 -0700155 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
156 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 SNMP_MIB_SENTINEL
158};
159
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800160static const struct snmp_mib snmp4_net_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
162 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
163 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
164 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
165 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
166 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
167 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
168 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
169 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
170 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
171 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
172 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
173 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
174 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
175 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
176 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
177 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
178 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
179 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
180 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
181 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
182 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
183 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
184 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
185 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
186 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
187 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
188 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
189 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
190 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
191 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
192 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
193 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
194 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
195 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
196 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
197 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
198 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
199 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
200 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
201 SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
202 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
203 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
204 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
205 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
206 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
207 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
208 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
209 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
210 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
211 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
212 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
213 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
214 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
215 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
216 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
217 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
218 SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
219 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
220 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
221 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
222 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
223 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
224 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
225 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
Ilpo Järvinen18f02542007-08-24 22:55:52 -0700226 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
227 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
228 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
Ilpo Järvinen912d8f02007-09-25 22:47:31 -0700229 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 SNMP_MIB_SENTINEL
231};
232
David L Stevens96793b42007-09-17 09:57:33 -0700233static void icmpmsg_put(struct seq_file *seq)
234{
235#define PERLINE 16
236
237 int j, i, count;
238 static int out[PERLINE];
239
240 count = 0;
241 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
242
243 if (snmp_fold_field((void **) icmpmsg_statistics, i))
244 out[count++] = i;
245 if (count < PERLINE)
246 continue;
247
248 seq_printf(seq, "\nIcmpMsg:");
249 for (j = 0; j < PERLINE; ++j)
250 seq_printf(seq, " %sType%u", i & 0x100 ? "Out" : "In",
251 i & 0xff);
252 seq_printf(seq, "\nIcmpMsg: ");
253 for (j = 0; j < PERLINE; ++j)
254 seq_printf(seq, " %lu",
255 snmp_fold_field((void **) icmpmsg_statistics,
256 out[j]));
257 seq_putc(seq, '\n');
258 }
259 if (count) {
260 seq_printf(seq, "\nIcmpMsg:");
261 for (j = 0; j < count; ++j)
262 seq_printf(seq, " %sType%u", out[j] & 0x100 ? "Out" :
263 "In", out[j] & 0xff);
264 seq_printf(seq, "\nIcmpMsg:");
265 for (j = 0; j < count; ++j)
266 seq_printf(seq, " %lu", snmp_fold_field((void **)
267 icmpmsg_statistics, out[j]));
268 }
269
270#undef PERLINE
271}
272
273static void icmp_put(struct seq_file *seq)
274{
275 int i;
276
277 seq_puts(seq, "\nIcmp: InMsgs InErrors");
278 for (i=0; icmpmibmap[i].name != NULL; i++)
279 seq_printf(seq, " In%s", icmpmibmap[i].name);
280 seq_printf(seq, " OutMsgs OutErrors");
281 for (i=0; icmpmibmap[i].name != NULL; i++)
282 seq_printf(seq, " Out%s", icmpmibmap[i].name);
283 seq_printf(seq, "\nIcmp: %lu %lu",
284 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INMSGS),
285 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INERRORS));
286 for (i=0; icmpmibmap[i].name != NULL; i++)
287 seq_printf(seq, " %lu",
288 snmp_fold_field((void **) icmpmsg_statistics,
289 icmpmibmap[i].index));
290 seq_printf(seq, " %lu %lu",
291 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTMSGS),
292 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTERRORS));
293 for (i=0; icmpmibmap[i].name != NULL; i++)
294 seq_printf(seq, " %lu",
295 snmp_fold_field((void **) icmpmsg_statistics,
Mitsuru Chinen064f3602007-10-29 22:02:57 -0700296 icmpmibmap[i].index | 0x100));
David L Stevens96793b42007-09-17 09:57:33 -0700297}
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299/*
300 * Called from the PROCfs module. This outputs /proc/net/snmp.
301 */
302static int snmp_seq_show(struct seq_file *seq, void *v)
303{
304 int i;
305
306 seq_puts(seq, "Ip: Forwarding DefaultTTL");
307
308 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
309 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
310
311 seq_printf(seq, "\nIp: %d %d",
Herbert Xu42f811b2007-06-04 23:34:44 -0700312 IPV4_DEVCONF_ALL(FORWARDING) ? 1 : 2, sysctl_ip_default_ttl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
314 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
315 seq_printf(seq, " %lu",
Herbert Xu5e0f0432007-04-24 21:53:35 -0700316 snmp_fold_field((void **)ip_statistics,
317 snmp4_ipstats_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
David L Stevens96793b42007-09-17 09:57:33 -0700319 icmp_put(seq); /* RFC 2011 compatibility */
320 icmpmsg_put(seq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
322 seq_puts(seq, "\nTcp:");
323 for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
324 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
325
326 seq_puts(seq, "\nTcp:");
327 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
328 /* MaxConn field is signed, RFC 2012 */
329 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
330 seq_printf(seq, " %ld",
Herbert Xu5e0f0432007-04-24 21:53:35 -0700331 snmp_fold_field((void **)tcp_statistics,
332 snmp4_tcp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 else
334 seq_printf(seq, " %lu",
Herbert Xu5e0f0432007-04-24 21:53:35 -0700335 snmp_fold_field((void **)tcp_statistics,
336 snmp4_tcp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 }
338
339 seq_puts(seq, "\nUdp:");
340 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
341 seq_printf(seq, " %s", snmp4_udp_list[i].name);
342
343 seq_puts(seq, "\nUdp:");
344 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
345 seq_printf(seq, " %lu",
Herbert Xu5e0f0432007-04-24 21:53:35 -0700346 snmp_fold_field((void **)udp_statistics,
347 snmp4_udp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800349 /* the UDP and UDP-Lite MIBs are the same */
350 seq_puts(seq, "\nUdpLite:");
351 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
352 seq_printf(seq, " %s", snmp4_udp_list[i].name);
353
354 seq_puts(seq, "\nUdpLite:");
355 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
356 seq_printf(seq, " %lu",
Herbert Xu5e0f0432007-04-24 21:53:35 -0700357 snmp_fold_field((void **)udplite_statistics,
358 snmp4_udp_list[i].entry));
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800359
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 seq_putc(seq, '\n');
361 return 0;
362}
363
364static int snmp_seq_open(struct inode *inode, struct file *file)
365{
366 return single_open(file, snmp_seq_show, NULL);
367}
368
Arjan van de Ven9a321442007-02-12 00:55:35 -0800369static const struct file_operations snmp_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 .owner = THIS_MODULE,
371 .open = snmp_seq_open,
372 .read = seq_read,
373 .llseek = seq_lseek,
374 .release = single_release,
375};
376
David L Stevens96793b42007-09-17 09:57:33 -0700377
378
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379/*
380 * Output /proc/net/netstat
381 */
382static int netstat_seq_show(struct seq_file *seq, void *v)
383{
384 int i;
385
386 seq_puts(seq, "TcpExt:");
387 for (i = 0; snmp4_net_list[i].name != NULL; i++)
388 seq_printf(seq, " %s", snmp4_net_list[i].name);
389
390 seq_puts(seq, "\nTcpExt:");
391 for (i = 0; snmp4_net_list[i].name != NULL; i++)
392 seq_printf(seq, " %lu",
Herbert Xu5e0f0432007-04-24 21:53:35 -0700393 snmp_fold_field((void **)net_statistics,
394 snmp4_net_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
Mitsuru Chinend8316662007-05-14 03:07:30 -0700396 seq_puts(seq, "\nIpExt:");
397 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
398 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
399
400 seq_puts(seq, "\nIpExt:");
401 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
402 seq_printf(seq, " %lu",
403 snmp_fold_field((void **)ip_statistics,
404 snmp4_ipextstats_list[i].entry));
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 seq_putc(seq, '\n');
407 return 0;
408}
409
410static int netstat_seq_open(struct inode *inode, struct file *file)
411{
412 return single_open(file, netstat_seq_show, NULL);
413}
414
Arjan van de Ven9a321442007-02-12 00:55:35 -0800415static const struct file_operations netstat_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 .owner = THIS_MODULE,
417 .open = netstat_seq_open,
418 .read = seq_read,
419 .llseek = seq_lseek,
420 .release = single_release,
421};
422
423int __init ip_misc_proc_init(void)
424{
425 int rc = 0;
426
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200427 if (!proc_net_fops_create(&init_net, "netstat", S_IRUGO, &netstat_seq_fops))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 goto out_netstat;
429
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200430 if (!proc_net_fops_create(&init_net, "snmp", S_IRUGO, &snmp_seq_fops))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 goto out_snmp;
432
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200433 if (!proc_net_fops_create(&init_net, "sockstat", S_IRUGO, &sockstat_seq_fops))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 goto out_sockstat;
435out:
436 return rc;
437out_sockstat:
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200438 proc_net_remove(&init_net, "snmp");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439out_snmp:
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200440 proc_net_remove(&init_net, "netstat");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441out_netstat:
442 rc = -ENOMEM;
443 goto out;
444}
YOSHIFUJI Hideaki33490172007-04-20 15:57:15 -0700445