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sch_tbf: Remove holes in struct tbf_sched_data.
[deliverable/linux.git] / net / ipv4 / proc.c
CommitLineData
1da177e4
LT		 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. It is mainly used for debugging and
8 * statistics.
9 *
1da177e4
LT		 10 * 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>
457c4cbc 35#include <net/net_namespace.h>
1da177e4
LT		 36#include <net/icmp.h>
37#include <net/protocol.h>
38#include <net/tcp.h>
39#include <net/udp.h>
ba4e58ec 40#include <net/udplite.h>
eb4dea58 41#include <linux/bottom_half.h>
14c85021 42#include <linux/inetdevice.h>
1da177e4
LT		 43#include <linux/proc_fs.h>
44#include <linux/seq_file.h>
bc3b2d7f 45#include <linux/export.h>
1da177e4
LT		 46#include <net/sock.h>
47#include <net/raw.h>
48
1da177e4
LT		 49/*
50 * Report socket allocation statistics [mea@utu.fi]
51 */
52static int sockstat_seq_show(struct seq_file *seq, void *v)
53{
fd4e7b50 54 struct net *net = seq->private;
eb4dea58
HX		 55 int orphans, sockets;
56
57 local_bh_disable();
1c10c49d 58 orphans = percpu_counter_sum_positive(&tcp_orphan_count);
180d8cd9 59 sockets = proto_sockets_allocated_sum_positive(&tcp_prot);
eb4dea58 60 local_bh_enable();
fd4e7b50 61
1da177e4 62 socket_seq_show(seq);
8d987e5c 63 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
eb4dea58
HX		 64 sock_prot_inuse_get(net, &tcp_prot), orphans,
65 tcp_death_row.tw_count, sockets,
180d8cd9 66 proto_memory_allocated(&tcp_prot));
8d987e5c 67 seq_printf(seq, "UDP: inuse %d mem %ld\n",
fd4e7b50 68 sock_prot_inuse_get(net, &udp_prot),
180d8cd9 69 proto_memory_allocated(&udp_prot));
c29a0bc4 70 seq_printf(seq, "UDPLITE: inuse %d\n",
fd4e7b50 71 sock_prot_inuse_get(net, &udplite_prot));
c29a0bc4 72 seq_printf(seq, "RAW: inuse %d\n",
fd4e7b50 73 sock_prot_inuse_get(net, &raw_prot));
7eb95156 74 seq_printf(seq, "FRAG: inuse %d memory %d\n",
fd4e7b50 75 ip_frag_nqueues(net), ip_frag_mem(net));
1da177e4
LT		 76 return 0;
77}
78
79static int sockstat_seq_open(struct inode *inode, struct file *file)
80{
de05c557 81 return single_open_net(inode, file, sockstat_seq_show);
fd4e7b50
PE		 82}
83
9a32144e 84static const struct file_operations sockstat_seq_fops = {
1da177e4
LT		 85 .owner = THIS_MODULE,
86 .open = sockstat_seq_open,
87 .read = seq_read,
88 .llseek = seq_lseek,
b6fcbdb4 89 .release = single_release_net,
1da177e4
LT		 90};
91
1da177e4 92/* snmp items */
9b5b5cff 93static const struct snmp_mib snmp4_ipstats_list[] = {
edf391ff 94 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
1da177e4
LT		 95 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),
edf391ff 101 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
1da177e4
LT		 102 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
1f07d03e 114/* Following items are displayed in /proc/net/netstat */
d831666e
MC		 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),
edf391ff
NH		 122 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),
1f07d03e 128 /* Non RFC4293 fields */
6a5dc9e5 129 SNMP_MIB_ITEM("InCsumErrors", IPSTATS_MIB_CSUMERRORS),
1f07d03e
ED		 130 SNMP_MIB_ITEM("InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
131 SNMP_MIB_ITEM("InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
132 SNMP_MIB_ITEM("InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
133 SNMP_MIB_ITEM("InCEPkts", IPSTATS_MIB_CEPKTS),
d831666e
MC		 134 SNMP_MIB_SENTINEL
135};
136
5833929c
AD		 137static const struct {
138 const char *name;
96793b48
DS		 139 int index;
140} icmpmibmap[] = {
141 { "DestUnreachs", ICMP_DEST_UNREACH },
142 { "TimeExcds", ICMP_TIME_EXCEEDED },
143 { "ParmProbs", ICMP_PARAMETERPROB },
144 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
145 { "Redirects", ICMP_REDIRECT },
146 { "Echos", ICMP_ECHO },
147 { "EchoReps", ICMP_ECHOREPLY },
148 { "Timestamps", ICMP_TIMESTAMP },
149 { "TimestampReps", ICMP_TIMESTAMPREPLY },
150 { "AddrMasks", ICMP_ADDRESS },
151 { "AddrMaskReps", ICMP_ADDRESSREPLY },
cfcabdcc 152 { NULL, 0 }
96793b48
DS		 153};
154
155
9b5b5cff 156static const struct snmp_mib snmp4_tcp_list[] = {
1da177e4
LT		 157 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
158 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
159 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
160 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
161 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
162 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
163 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
164 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
165 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
166 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
167 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
168 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
169 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
170 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
6a5dc9e5 171 SNMP_MIB_ITEM("InCsumErrors", TCP_MIB_CSUMERRORS),
1da177e4
LT		 172 SNMP_MIB_SENTINEL
173};
174
9b5b5cff 175static const struct snmp_mib snmp4_udp_list[] = {
1da177e4
LT		 176 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
177 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
178 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
179 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
81aa646c
MB		 180 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
181 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
6a5dc9e5 182 SNMP_MIB_ITEM("InCsumErrors", UDP_MIB_CSUMERRORS),
1da177e4
LT		 183 SNMP_MIB_SENTINEL
184};
185
9b5b5cff 186static const struct snmp_mib snmp4_net_list[] = {
1da177e4
LT		 187 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
188 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
189 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
190 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
191 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
192 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
193 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
194 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
195 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
196 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
197 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
198 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
199 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
200 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
201 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
202 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
203 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
204 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
205 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
206 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
207 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
208 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
209 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
210 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
211 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
212 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
213 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
214 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
215 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
216 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
217 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
218 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
219 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
220 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
221 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
222 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
223 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
224 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
225 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
226 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
1da177e4
LT		 227 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
228 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
229 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
230 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
231 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
232 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
233 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
234 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
6ba8a3b1 235 SNMP_MIB_ITEM("TCPLossProbes", LINUX_MIB_TCPLOSSPROBES),
9b717a8d 236 SNMP_MIB_ITEM("TCPLossProbeRecovery", LINUX_MIB_TCPLOSSPROBERECOVERY),
1da177e4
LT		 237 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
238 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
239 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
240 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
241 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
242 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
243 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
244 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
1da177e4
LT		 245 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
246 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
247 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
248 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
249 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
250 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
251 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
18f02545
IJ		 252 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
253 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
254 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
912d8f0b 255 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
785957d3
DM		 256 SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
257 SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
111cc8b9
IJ		 258 SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
259 SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
260 SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
6cce09f8
ED		 261 SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
262 SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
907cdda5 263 SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
b5f7e755 264 SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
67631510 265 SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
946cedcc
ED		 266 SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES),
267 SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP),
09e9b813 268 SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL),
c8628155 269 SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE),
a6df1ae9
ED		 270 SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE),
271 SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP),
272 SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE),
282f23c6 273 SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK),
0c24604b 274 SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE),
783237e8 275 SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE),
10467163
JC		 276 SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE),
277 SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL),
278 SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW),
279 SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD),
0e280af0 280 SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES),
288a9376 281 SNMP_MIB_ITEM("BusyPollRxPackets", LINUX_MIB_BUSYPOLLRXPACKETS),
f54b3111 282 SNMP_MIB_ITEM("TCPAutoCorking", LINUX_MIB_TCPAUTOCORKING),
8e165e20
FW		 283 SNMP_MIB_ITEM("TCPFromZeroWindowAdv", LINUX_MIB_TCPFROMZEROWINDOWADV),
284 SNMP_MIB_ITEM("TCPToZeroWindowAdv", LINUX_MIB_TCPTOZEROWINDOWADV),
285 SNMP_MIB_ITEM("TCPWantZeroWindowAdv", LINUX_MIB_TCPWANTZEROWINDOWADV),
1da177e4
LT		 286 SNMP_MIB_SENTINEL
287};
288
b971e7ac
ED		 289static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
290 unsigned short *type, int count)
291{
292 int j;
293
294 if (count) {
295 seq_printf(seq, "\nIcmpMsg:");
296 for (j = 0; j < count; ++j)
297 seq_printf(seq, " %sType%u",
298 type[j] & 0x100 ? "Out" : "In",
299 type[j] & 0xff);
300 seq_printf(seq, "\nIcmpMsg:");
301 for (j = 0; j < count; ++j)
302 seq_printf(seq, " %lu", vals[j]);
303 }
304}
305
96793b48
DS		 306static void icmpmsg_put(struct seq_file *seq)
307{
308#define PERLINE 16
309
b971e7ac
ED		 310 int i, count;
311 unsigned short type[PERLINE];
312 unsigned long vals[PERLINE], val;
229bf0cb 313 struct net *net = seq->private;
96793b48
DS		 314
315 count = 0;
316 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
acb32ba3 317 val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]);
b971e7ac
ED		 318 if (val) {
319 type[count] = i;
320 vals[count++] = val;
321 }
322 if (count == PERLINE) {
323 icmpmsg_put_line(seq, vals, type, count);
324 count = 0;
325 }
96793b48 326 }
b971e7ac 327 icmpmsg_put_line(seq, vals, type, count);
96793b48
DS		 328
329#undef PERLINE
330}
331
332static void icmp_put(struct seq_file *seq)
333{
334 int i;
229bf0cb 335 struct net *net = seq->private;
acb32ba3 336 atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs;
96793b48 337
6a5dc9e5 338 seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors");
442c67f8 339 for (i = 0; icmpmibmap[i].name != NULL; i++)
96793b48
DS		 340 seq_printf(seq, " In%s", icmpmibmap[i].name);
341 seq_printf(seq, " OutMsgs OutErrors");
442c67f8 342 for (i = 0; icmpmibmap[i].name != NULL; i++)
96793b48 343 seq_printf(seq, " Out%s", icmpmibmap[i].name);
6a5dc9e5 344 seq_printf(seq, "\nIcmp: %lu %lu %lu",
7d720c3e 345 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
6a5dc9e5
ED		 346 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS),
347 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS));
442c67f8 348 for (i = 0; icmpmibmap[i].name != NULL; i++)
96793b48 349 seq_printf(seq, " %lu",
acb32ba3 350 atomic_long_read(ptr + icmpmibmap[i].index));
96793b48 351 seq_printf(seq, " %lu %lu",
7d720c3e
TH		 352 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
353 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
442c67f8 354 for (i = 0; icmpmibmap[i].name != NULL; i++)
96793b48 355 seq_printf(seq, " %lu",
acb32ba3 356 atomic_long_read(ptr + (icmpmibmap[i].index | 0x100)));
96793b48
DS		 357}
358
1da177e4
LT		 359/*
360 * Called from the PROCfs module. This outputs /proc/net/snmp.
361 */
362static int snmp_seq_show(struct seq_file *seq, void *v)
363{
364 int i;
229bf0cb 365 struct net *net = seq->private;
1da177e4
LT		 366
367 seq_puts(seq, "Ip: Forwarding DefaultTTL");
368
369 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
370 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
371
372 seq_printf(seq, "\nIp: %d %d",
8e3461d0 373 IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
586f1211 374 sysctl_ip_default_ttl);
1da177e4 375
4ce3c183 376 BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
1da177e4 377 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
4ce3c183
ED		 378 seq_printf(seq, " %llu",
379 snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
380 snmp4_ipstats_list[i].entry,
381 offsetof(struct ipstats_mib, syncp)));
1da177e4 382
96793b48
DS		 383 icmp_put(seq); /* RFC 2011 compatibility */
384 icmpmsg_put(seq);
1da177e4
LT		 385
386 seq_puts(seq, "\nTcp:");
387 for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
388 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
389
390 seq_puts(seq, "\nTcp:");
391 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
392 /* MaxConn field is signed, RFC 2012 */
393 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
394 seq_printf(seq, " %ld",
7d720c3e 395 snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
5e0f0435 396 snmp4_tcp_list[i].entry));
1da177e4
LT		 397 else
398 seq_printf(seq, " %lu",
7d720c3e 399 snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
5e0f0435 400 snmp4_tcp_list[i].entry));
1da177e4
LT		 401 }
402
403 seq_puts(seq, "\nUdp:");
404 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
405 seq_printf(seq, " %s", snmp4_udp_list[i].name);
406
407 seq_puts(seq, "\nUdp:");
408 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
409 seq_printf(seq, " %lu",
7d720c3e 410 snmp_fold_field((void __percpu **)net->mib.udp_statistics,
5e0f0435 411 snmp4_udp_list[i].entry));
1da177e4 412
ba4e58ec
GR		 413 /* the UDP and UDP-Lite MIBs are the same */
414 seq_puts(seq, "\nUdpLite:");
415 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
416 seq_printf(seq, " %s", snmp4_udp_list[i].name);
417
418 seq_puts(seq, "\nUdpLite:");
419 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
420 seq_printf(seq, " %lu",
7d720c3e 421 snmp_fold_field((void __percpu **)net->mib.udplite_statistics,
5e0f0435 422 snmp4_udp_list[i].entry));
db8dac20 423
1da177e4
LT		 424 seq_putc(seq, '\n');
425 return 0;
426}
427
428static int snmp_seq_open(struct inode *inode, struct file *file)
429{
de05c557 430 return single_open_net(inode, file, snmp_seq_show);
229bf0cb
PE		 431}
432
9a32144e 433static const struct file_operations snmp_seq_fops = {
1da177e4
LT		 434 .owner = THIS_MODULE,
435 .open = snmp_seq_open,
436 .read = seq_read,
437 .llseek = seq_lseek,
b6fcbdb4 438 .release = single_release_net,
1da177e4
LT		 439};
440
96793b48
DS		 441
442
1da177e4
LT		 443/*
444 * Output /proc/net/netstat
445 */
446static int netstat_seq_show(struct seq_file *seq, void *v)
447{
448 int i;
7b7a9dfd 449 struct net *net = seq->private;
1da177e4
LT		 450
451 seq_puts(seq, "TcpExt:");
452 for (i = 0; snmp4_net_list[i].name != NULL; i++)
453 seq_printf(seq, " %s", snmp4_net_list[i].name);
454
455 seq_puts(seq, "\nTcpExt:");
456 for (i = 0; snmp4_net_list[i].name != NULL; i++)
457 seq_printf(seq, " %lu",
7d720c3e 458 snmp_fold_field((void __percpu **)net->mib.net_statistics,
5e0f0435 459 snmp4_net_list[i].entry));
1da177e4 460
d831666e
MC		 461 seq_puts(seq, "\nIpExt:");
462 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
463 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
464
465 seq_puts(seq, "\nIpExt:");
466 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
4ce3c183
ED		 467 seq_printf(seq, " %llu",
468 snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
469 snmp4_ipextstats_list[i].entry,
470 offsetof(struct ipstats_mib, syncp)));
d831666e 471
1da177e4
LT		 472 seq_putc(seq, '\n');
473 return 0;
474}
475
476static int netstat_seq_open(struct inode *inode, struct file *file)
477{
de05c557 478 return single_open_net(inode, file, netstat_seq_show);
7b7a9dfd
PE		 479}
480
9a32144e 481static const struct file_operations netstat_seq_fops = {
1da177e4
LT		 482 .owner = THIS_MODULE,
483 .open = netstat_seq_open,
484 .read = seq_read,
485 .llseek = seq_lseek,
b6fcbdb4 486 .release = single_release_net,
1da177e4
LT		 487};
488
d0538ca3
PE		 489static __net_init int ip_proc_init_net(struct net *net)
490{
d4beaa66
G		 491 if (!proc_create("sockstat", S_IRUGO, net->proc_net,
492 &sockstat_seq_fops))
60bdde95 493 goto out_sockstat;
d4beaa66 494 if (!proc_create("netstat", S_IRUGO, net->proc_net, &netstat_seq_fops))
7b7a9dfd 495 goto out_netstat;
d4beaa66 496 if (!proc_create("snmp", S_IRUGO, net->proc_net, &snmp_seq_fops))
229bf0cb 497 goto out_snmp;
7b7a9dfd 498
d0538ca3 499 return 0;
7b7a9dfd 500
229bf0cb 501out_snmp:
ece31ffd 502 remove_proc_entry("netstat", net->proc_net);
7b7a9dfd 503out_netstat:
ece31ffd 504 remove_proc_entry("sockstat", net->proc_net);
60bdde95 505out_sockstat:
7b7a9dfd 506 return -ENOMEM;
d0538ca3
PE		 507}
508
509static __net_exit void ip_proc_exit_net(struct net *net)
510{
ece31ffd
G		 511 remove_proc_entry("snmp", net->proc_net);
512 remove_proc_entry("netstat", net->proc_net);
513 remove_proc_entry("sockstat", net->proc_net);
d0538ca3
PE		 514}
515
516static __net_initdata struct pernet_operations ip_proc_ops = {
517 .init = ip_proc_init_net,
518 .exit = ip_proc_exit_net,
519};
520
1da177e4
LT		 521int __init ip_misc_proc_init(void)
522{
60bdde95 523 return register_pernet_subsys(&ip_proc_ops);
1da177e4 524}
33490170 525
Linux kernel - Deliverables
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