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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 *
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>
Herbert Xueb4dea52008-12-29 23:04:08 -080041#include <linux/bottom_half.h>
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -020042#include <linux/inetdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include <linux/proc_fs.h>
44#include <linux/seq_file.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040045#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#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{
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070054 struct net *net = seq->private;
Herbert Xueb4dea52008-12-29 23:04:08 -080055 int orphans, sockets;
56
57 local_bh_disable();
Thomas Gleixner1c10c492009-02-16 00:08:56 -080058 orphans = percpu_counter_sum_positive(&tcp_orphan_count);
Glauber Costa180d8cd2011-12-11 21:47:02 +000059 sockets = proto_sockets_allocated_sum_positive(&tcp_prot);
Herbert Xueb4dea52008-12-29 23:04:08 -080060 local_bh_enable();
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070061
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 socket_seq_show(seq);
Eric Dumazet8d987e52010-11-09 23:24:26 +000063 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
Herbert Xueb4dea52008-12-29 23:04:08 -080064 sock_prot_inuse_get(net, &tcp_prot), orphans,
65 tcp_death_row.tw_count, sockets,
Glauber Costa180d8cd2011-12-11 21:47:02 +000066 proto_memory_allocated(&tcp_prot));
Eric Dumazet8d987e52010-11-09 23:24:26 +000067 seq_printf(seq, "UDP: inuse %d mem %ld\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070068 sock_prot_inuse_get(net, &udp_prot),
Glauber Costa180d8cd2011-12-11 21:47:02 +000069 proto_memory_allocated(&udp_prot));
Pavel Emelyanovc29a0bc2008-03-31 19:41:46 -070070 seq_printf(seq, "UDPLITE: inuse %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070071 sock_prot_inuse_get(net, &udplite_prot));
Pavel Emelyanovc29a0bc2008-03-31 19:41:46 -070072 seq_printf(seq, "RAW: inuse %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070073 sock_prot_inuse_get(net, &raw_prot));
Pavel Emelyanov7eb95152007-10-15 02:31:52 -070074 seq_printf(seq, "FRAG: inuse %d memory %d\n",
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070075 ip_frag_nqueues(net), ip_frag_mem(net));
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 return 0;
77}
78
79static int sockstat_seq_open(struct inode *inode, struct file *file)
80{
Pavel Emelyanovde05c552008-07-18 04:07:21 -070081 return single_open_net(inode, file, sockstat_seq_show);
Pavel Emelyanovfd4e7b52008-03-31 19:43:18 -070082}
83
Arjan van de Ven9a321442007-02-12 00:55:35 -080084static const struct file_operations sockstat_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 .owner = THIS_MODULE,
86 .open = sockstat_seq_open,
87 .read = seq_read,
88 .llseek = seq_lseek,
Pavel Emelyanovb6fcbdb2008-07-18 04:07:44 -070089 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -070090};
91
Linus Torvalds1da177e2005-04-16 15:20:36 -070092/* snmp items */
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -080093static const struct snmp_mib snmp4_ipstats_list[] = {
Neil Hormanedf391f2009-04-27 02:45:02 -070094 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
96 SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
97 SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
98 SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
99 SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
100 SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
Neil Hormanedf391f2009-04-27 02:45:02 -0700101 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
103 SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
104 SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
105 SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
106 SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
107 SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
108 SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
109 SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
110 SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
111 SNMP_MIB_SENTINEL
112};
113
Mitsuru Chinend8316662007-05-14 03:07:30 -0700114/* Following RFC4293 items are displayed in /proc/net/netstat */
115static const struct snmp_mib snmp4_ipextstats_list[] = {
116 SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
117 SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
118 SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
119 SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
120 SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
121 SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
Neil Hormanedf391f2009-04-27 02:45:02 -0700122 SNMP_MIB_ITEM("InOctets", IPSTATS_MIB_INOCTETS),
123 SNMP_MIB_ITEM("OutOctets", IPSTATS_MIB_OUTOCTETS),
124 SNMP_MIB_ITEM("InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
125 SNMP_MIB_ITEM("OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
126 SNMP_MIB_ITEM("InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
127 SNMP_MIB_ITEM("OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
Mitsuru Chinend8316662007-05-14 03:07:30 -0700128 SNMP_MIB_SENTINEL
129};
130
Alexey Dobriyan58339292010-01-22 10:17:26 +0000131static const struct {
132 const char *name;
David L Stevens96793b42007-09-17 09:57:33 -0700133 int index;
134} icmpmibmap[] = {
135 { "DestUnreachs", ICMP_DEST_UNREACH },
136 { "TimeExcds", ICMP_TIME_EXCEEDED },
137 { "ParmProbs", ICMP_PARAMETERPROB },
138 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
139 { "Redirects", ICMP_REDIRECT },
140 { "Echos", ICMP_ECHO },
141 { "EchoReps", ICMP_ECHOREPLY },
142 { "Timestamps", ICMP_TIMESTAMP },
143 { "TimestampReps", ICMP_TIMESTAMPREPLY },
144 { "AddrMasks", ICMP_ADDRESS },
145 { "AddrMaskReps", ICMP_ADDRESSREPLY },
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -0700146 { NULL, 0 }
David L Stevens96793b42007-09-17 09:57:33 -0700147};
148
149
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800150static const struct snmp_mib snmp4_tcp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
152 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
153 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
154 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
155 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
156 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
157 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
158 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
159 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
160 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
161 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
162 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
163 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
164 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
165 SNMP_MIB_SENTINEL
166};
167
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800168static const struct snmp_mib snmp4_udp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
170 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
171 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
172 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
Martin Bligh81aa6462006-08-14 23:57:10 -0700173 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
174 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 SNMP_MIB_SENTINEL
176};
177
Arjan van de Ven9b5b5cf2005-11-29 16:21:38 -0800178static const struct snmp_mib snmp4_net_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
180 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
181 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
182 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
183 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
184 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
185 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
186 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
187 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
188 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
189 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
190 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
191 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
192 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
193 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
194 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
195 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
196 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
197 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
198 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
199 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
200 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
201 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
202 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
203 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
204 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
205 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
206 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
207 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
208 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
209 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
210 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
211 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
212 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
213 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
214 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
215 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
216 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
217 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
218 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
220 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
221 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
222 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
223 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
224 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
225 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
226 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
227 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
228 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
229 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
230 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
231 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
232 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
233 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
234 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
235 SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
236 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
237 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
238 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
239 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
240 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
241 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
242 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
Ilpo Järvinen18f02542007-08-24 22:55:52 -0700243 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
244 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
245 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
Ilpo Järvinen912d8f02007-09-25 22:47:31 -0700246 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
David S. Miller785957d2008-07-30 03:03:15 -0700247 SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
248 SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
Ilpo Järvinen111cc8b2008-11-24 21:27:22 -0800249 SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
250 SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
251 SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
Eric Dumazet6cce09f2010-03-07 23:21:57 +0000252 SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
253 SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
Eric Dumazet907cdda2010-03-19 05:37:18 +0000254 SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
Eric Dumazetb5f7e752010-06-02 12:05:27 +0000255 SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
Tom Herbert67631512010-12-08 12:16:33 -0800256 SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
Eric Dumazet946cedc2011-08-30 03:21:44 +0000257 SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES),
258 SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP),
Eric Dumazet09e9b812012-01-25 04:44:20 +0000259 SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL),
Eric Dumazetc8628152012-03-18 11:07:47 +0000260 SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE),
Eric Dumazeta6df1ae2012-07-16 01:41:36 +0000261 SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE),
262 SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP),
263 SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 SNMP_MIB_SENTINEL
265};
266
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800267static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
268 unsigned short *type, int count)
269{
270 int j;
271
272 if (count) {
273 seq_printf(seq, "\nIcmpMsg:");
274 for (j = 0; j < count; ++j)
275 seq_printf(seq, " %sType%u",
276 type[j] & 0x100 ? "Out" : "In",
277 type[j] & 0xff);
278 seq_printf(seq, "\nIcmpMsg:");
279 for (j = 0; j < count; ++j)
280 seq_printf(seq, " %lu", vals[j]);
281 }
282}
283
David L Stevens96793b42007-09-17 09:57:33 -0700284static void icmpmsg_put(struct seq_file *seq)
285{
286#define PERLINE 16
287
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800288 int i, count;
289 unsigned short type[PERLINE];
290 unsigned long vals[PERLINE], val;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700291 struct net *net = seq->private;
David L Stevens96793b42007-09-17 09:57:33 -0700292
293 count = 0;
294 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
Eric Dumazetacb32ba2011-11-08 13:04:43 +0000295 val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]);
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800296 if (val) {
297 type[count] = i;
298 vals[count++] = val;
299 }
300 if (count == PERLINE) {
301 icmpmsg_put_line(seq, vals, type, count);
302 count = 0;
303 }
David L Stevens96793b42007-09-17 09:57:33 -0700304 }
Eric Dumazetb971e7a2008-11-10 21:43:08 -0800305 icmpmsg_put_line(seq, vals, type, count);
David L Stevens96793b42007-09-17 09:57:33 -0700306
307#undef PERLINE
308}
309
310static void icmp_put(struct seq_file *seq)
311{
312 int i;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700313 struct net *net = seq->private;
Eric Dumazetacb32ba2011-11-08 13:04:43 +0000314 atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs;
David L Stevens96793b42007-09-17 09:57:33 -0700315
316 seq_puts(seq, "\nIcmp: InMsgs InErrors");
317 for (i=0; icmpmibmap[i].name != NULL; i++)
318 seq_printf(seq, " In%s", icmpmibmap[i].name);
319 seq_printf(seq, " OutMsgs OutErrors");
320 for (i=0; icmpmibmap[i].name != NULL; i++)
321 seq_printf(seq, " Out%s", icmpmibmap[i].name);
322 seq_printf(seq, "\nIcmp: %lu %lu",
Tejun Heo7d720c32010-02-16 15:20:26 +0000323 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
324 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
David L Stevens96793b42007-09-17 09:57:33 -0700325 for (i=0; icmpmibmap[i].name != NULL; i++)
326 seq_printf(seq, " %lu",
Eric Dumazetacb32ba2011-11-08 13:04:43 +0000327 atomic_long_read(ptr + icmpmibmap[i].index));
David L Stevens96793b42007-09-17 09:57:33 -0700328 seq_printf(seq, " %lu %lu",
Tejun Heo7d720c32010-02-16 15:20:26 +0000329 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
330 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
David L Stevens96793b42007-09-17 09:57:33 -0700331 for (i=0; icmpmibmap[i].name != NULL; i++)
332 seq_printf(seq, " %lu",
Eric Dumazetacb32ba2011-11-08 13:04:43 +0000333 atomic_long_read(ptr + (icmpmibmap[i].index | 0x100)));
David L Stevens96793b42007-09-17 09:57:33 -0700334}
335
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336/*
337 * Called from the PROCfs module. This outputs /proc/net/snmp.
338 */
339static int snmp_seq_show(struct seq_file *seq, void *v)
340{
341 int i;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700342 struct net *net = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
344 seq_puts(seq, "Ip: Forwarding DefaultTTL");
345
346 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
347 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
348
349 seq_printf(seq, "\nIp: %d %d",
Pavel Emelyanov8e3461d2008-07-18 04:06:26 -0700350 IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
Pavel Emelyanov586f1212007-12-16 13:32:48 -0800351 sysctl_ip_default_ttl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
Eric Dumazet4ce3c182010-06-30 13:31:19 -0700353 BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
Eric Dumazet4ce3c182010-06-30 13:31:19 -0700355 seq_printf(seq, " %llu",
356 snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
357 snmp4_ipstats_list[i].entry,
358 offsetof(struct ipstats_mib, syncp)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
David L Stevens96793b42007-09-17 09:57:33 -0700360 icmp_put(seq); /* RFC 2011 compatibility */
361 icmpmsg_put(seq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
363 seq_puts(seq, "\nTcp:");
364 for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
365 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
366
367 seq_puts(seq, "\nTcp:");
368 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
369 /* MaxConn field is signed, RFC 2012 */
370 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
371 seq_printf(seq, " %ld",
Tejun Heo7d720c32010-02-16 15:20:26 +0000372 snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700373 snmp4_tcp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 else
375 seq_printf(seq, " %lu",
Tejun Heo7d720c32010-02-16 15:20:26 +0000376 snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700377 snmp4_tcp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 }
379
380 seq_puts(seq, "\nUdp:");
381 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
382 seq_printf(seq, " %s", snmp4_udp_list[i].name);
383
384 seq_puts(seq, "\nUdp:");
385 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
386 seq_printf(seq, " %lu",
Tejun Heo7d720c32010-02-16 15:20:26 +0000387 snmp_fold_field((void __percpu **)net->mib.udp_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700388 snmp4_udp_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
Gerrit Renkerba4e58e2006-11-27 11:10:57 -0800390 /* the UDP and UDP-Lite MIBs are the same */
391 seq_puts(seq, "\nUdpLite:");
392 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
393 seq_printf(seq, " %s", snmp4_udp_list[i].name);
394
395 seq_puts(seq, "\nUdpLite:");
396 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
397 seq_printf(seq, " %lu",
Tejun Heo7d720c32010-02-16 15:20:26 +0000398 snmp_fold_field((void __percpu **)net->mib.udplite_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700399 snmp4_udp_list[i].entry));
David S. Millerdb8dac22008-03-06 16:22:02 -0800400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 seq_putc(seq, '\n');
402 return 0;
403}
404
405static int snmp_seq_open(struct inode *inode, struct file *file)
406{
Pavel Emelyanovde05c552008-07-18 04:07:21 -0700407 return single_open_net(inode, file, snmp_seq_show);
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700408}
409
Arjan van de Ven9a321442007-02-12 00:55:35 -0800410static const struct file_operations snmp_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 .owner = THIS_MODULE,
412 .open = snmp_seq_open,
413 .read = seq_read,
414 .llseek = seq_lseek,
Pavel Emelyanovb6fcbdb2008-07-18 04:07:44 -0700415 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416};
417
David L Stevens96793b42007-09-17 09:57:33 -0700418
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420/*
421 * Output /proc/net/netstat
422 */
423static int netstat_seq_show(struct seq_file *seq, void *v)
424{
425 int i;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700426 struct net *net = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
428 seq_puts(seq, "TcpExt:");
429 for (i = 0; snmp4_net_list[i].name != NULL; i++)
430 seq_printf(seq, " %s", snmp4_net_list[i].name);
431
432 seq_puts(seq, "\nTcpExt:");
433 for (i = 0; snmp4_net_list[i].name != NULL; i++)
434 seq_printf(seq, " %lu",
Tejun Heo7d720c32010-02-16 15:20:26 +0000435 snmp_fold_field((void __percpu **)net->mib.net_statistics,
Herbert Xu5e0f0432007-04-24 21:53:35 -0700436 snmp4_net_list[i].entry));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Mitsuru Chinend8316662007-05-14 03:07:30 -0700438 seq_puts(seq, "\nIpExt:");
439 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
440 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
441
442 seq_puts(seq, "\nIpExt:");
443 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
Eric Dumazet4ce3c182010-06-30 13:31:19 -0700444 seq_printf(seq, " %llu",
445 snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
446 snmp4_ipextstats_list[i].entry,
447 offsetof(struct ipstats_mib, syncp)));
Mitsuru Chinend8316662007-05-14 03:07:30 -0700448
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 seq_putc(seq, '\n');
450 return 0;
451}
452
453static int netstat_seq_open(struct inode *inode, struct file *file)
454{
Pavel Emelyanovde05c552008-07-18 04:07:21 -0700455 return single_open_net(inode, file, netstat_seq_show);
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700456}
457
Arjan van de Ven9a321442007-02-12 00:55:35 -0800458static const struct file_operations netstat_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 .owner = THIS_MODULE,
460 .open = netstat_seq_open,
461 .read = seq_read,
462 .llseek = seq_lseek,
Pavel Emelyanovb6fcbdb2008-07-18 04:07:44 -0700463 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464};
465
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700466static __net_init int ip_proc_init_net(struct net *net)
467{
468 if (!proc_net_fops_create(net, "sockstat", S_IRUGO, &sockstat_seq_fops))
Pavel Emelyanov60bdde92008-07-18 04:06:50 -0700469 goto out_sockstat;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700470 if (!proc_net_fops_create(net, "netstat", S_IRUGO, &netstat_seq_fops))
471 goto out_netstat;
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700472 if (!proc_net_fops_create(net, "snmp", S_IRUGO, &snmp_seq_fops))
473 goto out_snmp;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700474
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700475 return 0;
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700476
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700477out_snmp:
478 proc_net_remove(net, "netstat");
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700479out_netstat:
480 proc_net_remove(net, "sockstat");
Pavel Emelyanov60bdde92008-07-18 04:06:50 -0700481out_sockstat:
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700482 return -ENOMEM;
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700483}
484
485static __net_exit void ip_proc_exit_net(struct net *net)
486{
Pavel Emelyanov229bf0c2008-07-18 04:06:04 -0700487 proc_net_remove(net, "snmp");
Pavel Emelyanov7b7a9df2008-07-18 04:05:17 -0700488 proc_net_remove(net, "netstat");
Pavel Emelyanovd0538ca2008-03-31 19:42:37 -0700489 proc_net_remove(net, "sockstat");
490}
491
492static __net_initdata struct pernet_operations ip_proc_ops = {
493 .init = ip_proc_init_net,
494 .exit = ip_proc_exit_net,
495};
496
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497int __init ip_misc_proc_init(void)
498{
Pavel Emelyanov60bdde92008-07-18 04:06:50 -0700499 return register_pernet_subsys(&ip_proc_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500}
YOSHIFUJI Hideaki33490172007-04-20 15:57:15 -0700501