blob: a631a1f110caab546d4d5e46aff34d7f67c66f03 [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. It is mainly used for debugging and
8 * statistics.
9 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
11 * Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
12 * Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
13 * Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
14 *
15 * Fixes:
16 * Alan Cox : UDP sockets show the rxqueue/txqueue
17 * using hint flag for the netinfo.
18 * Pauline Middelink : identd support
19 * Alan Cox : Make /proc safer.
20 * Erik Schoenfelder : /proc/net/snmp
21 * Alan Cox : Handle dead sockets properly.
22 * Gerhard Koerting : Show both timers
23 * Alan Cox : Allow inode to be NULL (kernel socket)
24 * Andi Kleen : Add support for open_requests and
25 * split functions for more readibility.
26 * Andi Kleen : Add support for /proc/net/netstat
27 * Arnaldo C. Melo : Convert to seq_file
28 *
29 * This program is free software; you can redistribute it and/or
30 * modify it under the terms of the GNU General Public License
31 * as published by the Free Software Foundation; either version
32 * 2 of the License, or (at your option) any later version.
33 */
34#include <linux/types.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +020035#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include <net/icmp.h>
37#include <net/protocol.h>
38#include <net/tcp.h>
39#include <net/udp.h>
Gerrit Renkerba4e58e2006-11-27 11:10:57 -080040#include <net/udplite.h>
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -020041#include <linux/inetdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <linux/proc_fs.h>
43#include <linux/seq_file.h>
44#include <net/sock.h>
45#include <net/raw.h>
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047/*
48 * Report socket allocation statistics [mea@utu.fi]
49 */
50static int sockstat_seq_show(struct seq_file *seq, void *v)
51{
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070052 struct net *net = seq->private;
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",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070056 sock_prot_inuse_get(net, &tcp_prot),
Eric Dumazet65f76512008-01-03 20:46:48 -080057 atomic_read(&tcp_orphan_count),
Arnaldo Carvalho de Melo295ff7e2005-08-09 20:44:40 -070058 tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 atomic_read(&tcp_memory_allocated));
Pavel Emelyanovc29a0bc2008-03-31 19:41:46 -070060 seq_printf(seq, "UDP: inuse %d mem %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070061 sock_prot_inuse_get(net, &udp_prot),
Hideo Aoki95766ff2007-12-31 00:29:24 -080062 atomic_read(&udp_memory_allocated));
Pavel Emelyanovc29a0bc2008-03-31 19:41:46 -070063 seq_printf(seq, "UDPLITE: inuse %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070064 sock_prot_inuse_get(net, &udplite_prot));
Pavel Emelyanovc29a0bc2008-03-31 19:41:46 -070065 seq_printf(seq, "RAW: inuse %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070066 sock_prot_inuse_get(net, &raw_prot));
Pavel Emelyanov7eb95152007-10-15 02:31:52 -070067 seq_printf(seq, "FRAG: inuse %d memory %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070068 ip_frag_nqueues(net), ip_frag_mem(net));
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 return 0;
70}
71
72static int sockstat_seq_open(struct inode *inode, struct file *file)
73{
Pavel Emelyanovde05c552008-07-18 04:07:21 -070074 return single_open_net(inode, file, sockstat_seq_show);
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070075}
76
Arjan van de Ven9a321442007-02-12 00:55:35 -080077static const struct file_operations sockstat_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 .owner = THIS_MODULE,
79 .open = sockstat_seq_open,
80 .read = seq_read,
81 .llseek = seq_lseek,
Pavel Emelyanovb6fcbdb2008-07-18 04:07:44 -070082 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -070083};
84
Linus Torvalds1da177e2005-04-16 15:20:36 -070085/* snmp items */
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -080086static const struct snmp_mib snmp4_ipstats_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
88 SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
89 SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
90 SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
91 SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
92 SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
93 SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
94 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
95 SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
96 SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
97 SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
98 SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
99 SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
100 SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
101 SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
102 SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
103 SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
104 SNMP_MIB_SENTINEL
105};
106
Mitsuru Chinend8316662007-05-14 03:07:30 -0700107/* Following RFC4293 items are displayed in /proc/net/netstat */
108static const struct snmp_mib snmp4_ipextstats_list[] = {
109 SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
110 SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
111 SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
112 SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
113 SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
114 SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
115 SNMP_MIB_SENTINEL
116};
117
David L Stevens96793b42007-09-17 09:57:33 -0700118static struct {
119 char *name;
120 int index;
121} icmpmibmap[] = {
122 { "DestUnreachs", ICMP_DEST_UNREACH },
123 { "TimeExcds", ICMP_TIME_EXCEEDED },
124 { "ParmProbs", ICMP_PARAMETERPROB },
125 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
126 { "Redirects", ICMP_REDIRECT },
127 { "Echos", ICMP_ECHO },
128 { "EchoReps", ICMP_ECHOREPLY },
129 { "Timestamps", ICMP_TIMESTAMP },
130 { "TimestampReps", ICMP_TIMESTAMPREPLY },
131 { "AddrMasks", ICMP_ADDRESS },
132 { "AddrMaskReps", ICMP_ADDRESSREPLY },
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -0700133 { NULL, 0 }
David L Stevens96793b42007-09-17 09:57:33 -0700134};
135
136
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800137static const struct snmp_mib snmp4_tcp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
139 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
140 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
141 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
142 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
143 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
144 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
145 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
146 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
147 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
148 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
149 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
150 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
151 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
152 SNMP_MIB_SENTINEL
153};
154
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800155static const struct snmp_mib snmp4_udp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
157 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
158 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
159 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
Martin Bligh81aa6462006-08-14 23:57:10 -0700160 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
161 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 SNMP_MIB_SENTINEL
163};
164
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800165static const struct snmp_mib snmp4_net_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
167 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
168 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
169 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
170 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
171 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
172 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
173 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
174 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
175 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
176 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
177 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
178 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
179 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
180 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
181 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
182 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
183 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
184 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
185 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
186 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
187 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
188 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
189 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
190 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
191 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
192 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
193 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
194 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
195 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
196 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
197 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
198 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
199 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
200 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
201 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
202 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
203 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
204 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
205 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
206 SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
207 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
208 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
209 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
210 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
211 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
212 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
213 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
214 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
215 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
216 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
217 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
218 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
219 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
220 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
221 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
222 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
223 SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
224 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
225 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
226 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
227 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
228 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
229 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
230 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
Ilpo Järvinen18f02542007-08-24 22:55:52 -0700231 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
232 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
233 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
Ilpo Järvinen912d8f02007-09-25 22:47:31 -0700234 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
David S. Miller785957d2008-07-30 03:03:15 -0700235 SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
236 SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 SNMP_MIB_SENTINEL
238};
239
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800240static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
241 unsigned short *type, int count)
242{
243 int j;
244
245 if (count) {
246 seq_printf(seq, "\nIcmpMsg:");
247 for (j = 0; j < count; ++j)
248 seq_printf(seq, " %sType%u",
249 type[j] & 0x100 ? "Out" : "In",
250 type[j] & 0xff);
251 seq_printf(seq, "\nIcmpMsg:");
252 for (j = 0; j < count; ++j)
253 seq_printf(seq, " %lu", vals[j]);
254 }
255}
256
David L Stevens96793b42007-09-17 09:57:33 -0700257static void icmpmsg_put(struct seq_file *seq)
258{
259#define PERLINE 16
260
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800261 int i, count;
262 unsigned short type[PERLINE];
263 unsigned long vals[PERLINE], val;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700264 struct net *net = seq->private;
David L Stevens96793b42007-09-17 09:57:33 -0700265
266 count = 0;
267 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800268 val = snmp_fold_field((void **) net->mib.icmpmsg_statistics, i);
269 if (val) {
270 type[count] = i;
271 vals[count++] = val;
272 }
273 if (count == PERLINE) {
274 icmpmsg_put_line(seq, vals, type, count);
275 count = 0;
276 }
David L Stevens96793b42007-09-17 09:57:33 -0700277 }
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800278 icmpmsg_put_line(seq, vals, type, count);
David L Stevens96793b42007-09-17 09:57:33 -0700279
280#undef PERLINE
281}
282
283static void icmp_put(struct seq_file *seq)
284{
285 int i;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700286 struct net *net = seq->private;
David L Stevens96793b42007-09-17 09:57:33 -0700287
288 seq_puts(seq, "\nIcmp: InMsgs InErrors");
289 for (i=0; icmpmibmap[i].name != NULL; i++)
290 seq_printf(seq, " In%s", icmpmibmap[i].name);
291 seq_printf(seq, " OutMsgs OutErrors");
292 for (i=0; icmpmibmap[i].name != NULL; i++)
293 seq_printf(seq, " Out%s", icmpmibmap[i].name);
294 seq_printf(seq, "\nIcmp: %lu %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700295 snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
296 snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
David L Stevens96793b42007-09-17 09:57:33 -0700297 for (i=0; icmpmibmap[i].name != NULL; i++)
298 seq_printf(seq, " %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700299 snmp_fold_field((void **) net->mib.icmpmsg_statistics,
David L Stevens96793b42007-09-17 09:57:33 -0700300 icmpmibmap[i].index));
301 seq_printf(seq, " %lu %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700302 snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
303 snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
David L Stevens96793b42007-09-17 09:57:33 -0700304 for (i=0; icmpmibmap[i].name != NULL; i++)
305 seq_printf(seq, " %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700306 snmp_fold_field((void **) net->mib.icmpmsg_statistics,
Mitsuru Chinen064f3602007-10-29 22:02:57 -0700307 icmpmibmap[i].index | 0x100));
David L Stevens96793b42007-09-17 09:57:33 -0700308}
309
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310/*
311 * Called from the PROCfs module. This outputs /proc/net/snmp.
312 */
313static int snmp_seq_show(struct seq_file *seq, void *v)
314{
315 int i;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700316 struct net *net = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317
318 seq_puts(seq, "Ip: Forwarding DefaultTTL");
319
320 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
321 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
322
323 seq_printf(seq, "\nIp: %d %d",
Pavel Emelyanov8e3461d2008-07-18 04:06:26 -0700324 IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
Pavel Emelyanov586f1212007-12-16 13:32:48 -0800325 sysctl_ip_default_ttl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
328 seq_printf(seq, " %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700329 snmp_fold_field((void **)net->mib.ip_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700330 snmp4_ipstats_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
David L Stevens96793b42007-09-17 09:57:33 -0700332 icmp_put(seq); /* RFC 2011 compatibility */
333 icmpmsg_put(seq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
335 seq_puts(seq, "\nTcp:");
336 for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
337 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
338
339 seq_puts(seq, "\nTcp:");
340 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
341 /* MaxConn field is signed, RFC 2012 */
342 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
343 seq_printf(seq, " %ld",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700344 snmp_fold_field((void **)net->mib.tcp_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700345 snmp4_tcp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 else
347 seq_printf(seq, " %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700348 snmp_fold_field((void **)net->mib.tcp_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700349 snmp4_tcp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 }
351
352 seq_puts(seq, "\nUdp:");
353 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
354 seq_printf(seq, " %s", snmp4_udp_list[i].name);
355
356 seq_puts(seq, "\nUdp:");
357 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
358 seq_printf(seq, " %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700359 snmp_fold_field((void **)net->mib.udp_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700360 snmp4_udp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800362 /* the UDP and UDP-Lite MIBs are the same */
363 seq_puts(seq, "\nUdpLite:");
364 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
365 seq_printf(seq, " %s", snmp4_udp_list[i].name);
366
367 seq_puts(seq, "\nUdpLite:");
368 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
369 seq_printf(seq, " %lu",
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700370 snmp_fold_field((void **)net->mib.udplite_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700371 snmp4_udp_list[i].entry));
David S. Millerdb8dac22008-03-06 16:22:02 -0800372
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 seq_putc(seq, '\n');
374 return 0;
375}
376
377static int snmp_seq_open(struct inode *inode, struct file *file)
378{
Pavel Emelyanovde05c552008-07-18 04:07:21 -0700379 return single_open_net(inode, file, snmp_seq_show);
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700380}
381
Arjan van de Ven9a321442007-02-12 00:55:35 -0800382static const struct file_operations snmp_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 .owner = THIS_MODULE,
384 .open = snmp_seq_open,
385 .read = seq_read,
386 .llseek = seq_lseek,
Pavel Emelyanovb6fcbdb2008-07-18 04:07:44 -0700387 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388};
389
David L Stevens96793b42007-09-17 09:57:33 -0700390
391
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392/*
393 * Output /proc/net/netstat
394 */
395static int netstat_seq_show(struct seq_file *seq, void *v)
396{
397 int i;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700398 struct net *net = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
400 seq_puts(seq, "TcpExt:");
401 for (i = 0; snmp4_net_list[i].name != NULL; i++)
402 seq_printf(seq, " %s", snmp4_net_list[i].name);
403
404 seq_puts(seq, "\nTcpExt:");
405 for (i = 0; snmp4_net_list[i].name != NULL; i++)
406 seq_printf(seq, " %lu",
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700407 snmp_fold_field((void **)net->mib.net_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700408 snmp4_net_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409
Mitsuru Chinend8316662007-05-14 03:07:30 -0700410 seq_puts(seq, "\nIpExt:");
411 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
412 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
413
414 seq_puts(seq, "\nIpExt:");
415 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
416 seq_printf(seq, " %lu",
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700417 snmp_fold_field((void **)net->mib.ip_statistics,
Mitsuru Chinend8316662007-05-14 03:07:30 -0700418 snmp4_ipextstats_list[i].entry));
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 seq_putc(seq, '\n');
421 return 0;
422}
423
424static int netstat_seq_open(struct inode *inode, struct file *file)
425{
Pavel Emelyanovde05c552008-07-18 04:07:21 -0700426 return single_open_net(inode, file, netstat_seq_show);
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700427}
428
Arjan van de Ven9a321442007-02-12 00:55:35 -0800429static const struct file_operations netstat_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 .owner = THIS_MODULE,
431 .open = netstat_seq_open,
432 .read = seq_read,
433 .llseek = seq_lseek,
Pavel Emelyanovb6fcbdb2008-07-18 04:07:44 -0700434 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435};
436
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700437static __net_init int ip_proc_init_net(struct net *net)
438{
439 if (!proc_net_fops_create(net, "sockstat", S_IRUGO, &sockstat_seq_fops))
Pavel Emelyanov60bdde92008-07-18 04:06:50 -0700440 goto out_sockstat;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700441 if (!proc_net_fops_create(net, "netstat", S_IRUGO, &netstat_seq_fops))
442 goto out_netstat;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700443 if (!proc_net_fops_create(net, "snmp", S_IRUGO, &snmp_seq_fops))
444 goto out_snmp;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700445
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700446 return 0;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700447
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700448out_snmp:
449 proc_net_remove(net, "netstat");
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700450out_netstat:
451 proc_net_remove(net, "sockstat");
Pavel Emelyanov60bdde92008-07-18 04:06:50 -0700452out_sockstat:
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700453 return -ENOMEM;
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700454}
455
456static __net_exit void ip_proc_exit_net(struct net *net)
457{
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700458 proc_net_remove(net, "snmp");
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700459 proc_net_remove(net, "netstat");
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700460 proc_net_remove(net, "sockstat");
461}
462
463static __net_initdata struct pernet_operations ip_proc_ops = {
464 .init = ip_proc_init_net,
465 .exit = ip_proc_exit_net,
466};
467
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468int __init ip_misc_proc_init(void)
469{
Pavel Emelyanov60bdde92008-07-18 04:06:50 -0700470 return register_pernet_subsys(&ip_proc_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471}
YOSHIFUJI Hideaki33490172007-04-20 15:57:15 -0700472