?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
pvrusb2: reduce stack usage pvr2_eeprom_analyze()
[linux/fpc-iii.git] / net / ipv4 / proc.c
blob7143ca1a6af991cd7d1f35753577aae5422ccf10
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 *
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>
35 #include <net/net_namespace.h>
36 #include <net/icmp.h>
37 #include <net/protocol.h>
38 #include <net/tcp.h>
39 #include <net/udp.h>
40 #include <net/udplite.h>
41 #include <linux/bottom_half.h>
42 #include <linux/inetdevice.h>
43 #include <linux/proc_fs.h>
44 #include <linux/seq_file.h>
45 #include <linux/export.h>
46 #include <net/sock.h>
47 #include <net/raw.h>
48
49 #define TCPUDP_MIB_MAX max_t(u32, UDP_MIB_MAX, TCP_MIB_MAX)
50
51 /*
52 * Report socket allocation statistics [mea@utu.fi]
53 */
54 static int sockstat_seq_show(struct seq_file *seq, void *v)
55 {
56 struct net *net = seq->private;
57 unsigned int frag_mem;
58 int orphans, sockets;
59
60 local_bh_disable();
61 orphans = percpu_counter_sum_positive(&tcp_orphan_count);
62 sockets = proto_sockets_allocated_sum_positive(&tcp_prot);
63 local_bh_enable();
64
65 socket_seq_show(seq);
66 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
67 sock_prot_inuse_get(net, &tcp_prot), orphans,
68 atomic_read(&tcp_death_row.tw_count), sockets,
69 proto_memory_allocated(&tcp_prot));
70 seq_printf(seq, "UDP: inuse %d mem %ld\n",
71 sock_prot_inuse_get(net, &udp_prot),
72 proto_memory_allocated(&udp_prot));
73 seq_printf(seq, "UDPLITE: inuse %d\n",
74 sock_prot_inuse_get(net, &udplite_prot));
75 seq_printf(seq, "RAW: inuse %d\n",
76 sock_prot_inuse_get(net, &raw_prot));
77 frag_mem = ip_frag_mem(net);
78 seq_printf(seq, "FRAG: inuse %u memory %u\n", !!frag_mem, frag_mem);
79 return 0;
80 }
81
82 static int sockstat_seq_open(struct inode *inode, struct file *file)
83 {
84 return single_open_net(inode, file, sockstat_seq_show);
85 }
86
87 static const struct file_operations sockstat_seq_fops = {
88 .owner = THIS_MODULE,
89 .open = sockstat_seq_open,
90 .read = seq_read,
91 .llseek = seq_lseek,
92 .release = single_release_net,
93 };
94
95 /* snmp items */
96 static const struct snmp_mib snmp4_ipstats_list[] = {
97 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
98 SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
99 SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
100 SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
101 SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
102 SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
103 SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
104 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
105 SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
106 SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
107 SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
108 SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
109 SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
110 SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
111 SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
112 SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
113 SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
114 SNMP_MIB_SENTINEL
115 };
116
117 /* Following items are displayed in /proc/net/netstat */
118 static const struct snmp_mib snmp4_ipextstats_list[] = {
119 SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
120 SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
121 SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
122 SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
123 SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
124 SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
125 SNMP_MIB_ITEM("InOctets", IPSTATS_MIB_INOCTETS),
126 SNMP_MIB_ITEM("OutOctets", IPSTATS_MIB_OUTOCTETS),
127 SNMP_MIB_ITEM("InMcastOctets", IPSTATS_MIB_INMCASTOCTETS),
128 SNMP_MIB_ITEM("OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS),
129 SNMP_MIB_ITEM("InBcastOctets", IPSTATS_MIB_INBCASTOCTETS),
130 SNMP_MIB_ITEM("OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS),
131 /* Non RFC4293 fields */
132 SNMP_MIB_ITEM("InCsumErrors", IPSTATS_MIB_CSUMERRORS),
133 SNMP_MIB_ITEM("InNoECTPkts", IPSTATS_MIB_NOECTPKTS),
134 SNMP_MIB_ITEM("InECT1Pkts", IPSTATS_MIB_ECT1PKTS),
135 SNMP_MIB_ITEM("InECT0Pkts", IPSTATS_MIB_ECT0PKTS),
136 SNMP_MIB_ITEM("InCEPkts", IPSTATS_MIB_CEPKTS),
137 SNMP_MIB_SENTINEL
138 };
139
140 static const struct {
141 const char *name;
142 int index;
143 } icmpmibmap[] = {
144 { "DestUnreachs", ICMP_DEST_UNREACH },
145 { "TimeExcds", ICMP_TIME_EXCEEDED },
146 { "ParmProbs", ICMP_PARAMETERPROB },
147 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
148 { "Redirects", ICMP_REDIRECT },
149 { "Echos", ICMP_ECHO },
150 { "EchoReps", ICMP_ECHOREPLY },
151 { "Timestamps", ICMP_TIMESTAMP },
152 { "TimestampReps", ICMP_TIMESTAMPREPLY },
153 { "AddrMasks", ICMP_ADDRESS },
154 { "AddrMaskReps", ICMP_ADDRESSREPLY },
155 { NULL, 0 }
156 };
157
158
159 static const struct snmp_mib snmp4_tcp_list[] = {
160 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
161 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
162 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
163 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
164 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
165 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
166 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
167 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
168 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
169 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
170 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
171 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
172 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
173 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
174 SNMP_MIB_ITEM("InCsumErrors", TCP_MIB_CSUMERRORS),
175 SNMP_MIB_SENTINEL
176 };
177
178 static const struct snmp_mib snmp4_udp_list[] = {
179 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
180 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
181 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
182 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
183 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
184 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
185 SNMP_MIB_ITEM("InCsumErrors", UDP_MIB_CSUMERRORS),
186 SNMP_MIB_ITEM("IgnoredMulti", UDP_MIB_IGNOREDMULTI),
187 SNMP_MIB_SENTINEL
188 };
189
190 static const struct snmp_mib snmp4_net_list[] = {
191 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
192 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
193 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
194 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
195 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
196 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
197 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
198 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
199 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
200 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
201 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
202 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
203 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
204 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
205 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
206 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
207 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
208 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
209 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
210 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
211 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
212 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
213 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
214 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
215 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
216 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
217 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
218 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
219 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
220 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
221 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
222 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
223 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
224 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
225 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
226 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
227 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
228 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
229 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
230 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
231 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
232 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
233 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
234 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
235 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
236 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
237 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
238 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
239 SNMP_MIB_ITEM("TCPLossProbes", LINUX_MIB_TCPLOSSPROBES),
240 SNMP_MIB_ITEM("TCPLossProbeRecovery", LINUX_MIB_TCPLOSSPROBERECOVERY),
241 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
242 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
243 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
244 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
245 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
246 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
247 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
248 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
249 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
250 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
251 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
252 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
253 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
254 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
255 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
256 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
257 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
258 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
259 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
260 SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
261 SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
262 SNMP_MIB_ITEM("TCPMD5Failure", LINUX_MIB_TCPMD5FAILURE),
263 SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
264 SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
265 SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
266 SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
267 SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
268 SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
269 SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
270 SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
271 SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES),
272 SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP),
273 SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL),
274 SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE),
275 SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE),
276 SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP),
277 SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE),
278 SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK),
279 SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE),
280 SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE),
281 SNMP_MIB_ITEM("TCPFastOpenActiveFail", LINUX_MIB_TCPFASTOPENACTIVEFAIL),
282 SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE),
283 SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL),
284 SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW),
285 SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD),
286 SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES),
287 SNMP_MIB_ITEM("BusyPollRxPackets", LINUX_MIB_BUSYPOLLRXPACKETS),
288 SNMP_MIB_ITEM("TCPAutoCorking", LINUX_MIB_TCPAUTOCORKING),
289 SNMP_MIB_ITEM("TCPFromZeroWindowAdv", LINUX_MIB_TCPFROMZEROWINDOWADV),
290 SNMP_MIB_ITEM("TCPToZeroWindowAdv", LINUX_MIB_TCPTOZEROWINDOWADV),
291 SNMP_MIB_ITEM("TCPWantZeroWindowAdv", LINUX_MIB_TCPWANTZEROWINDOWADV),
292 SNMP_MIB_ITEM("TCPSynRetrans", LINUX_MIB_TCPSYNRETRANS),
293 SNMP_MIB_ITEM("TCPOrigDataSent", LINUX_MIB_TCPORIGDATASENT),
294 SNMP_MIB_ITEM("TCPHystartTrainDetect", LINUX_MIB_TCPHYSTARTTRAINDETECT),
295 SNMP_MIB_ITEM("TCPHystartTrainCwnd", LINUX_MIB_TCPHYSTARTTRAINCWND),
296 SNMP_MIB_ITEM("TCPHystartDelayDetect", LINUX_MIB_TCPHYSTARTDELAYDETECT),
297 SNMP_MIB_ITEM("TCPHystartDelayCwnd", LINUX_MIB_TCPHYSTARTDELAYCWND),
298 SNMP_MIB_ITEM("TCPACKSkippedSynRecv", LINUX_MIB_TCPACKSKIPPEDSYNRECV),
299 SNMP_MIB_ITEM("TCPACKSkippedPAWS", LINUX_MIB_TCPACKSKIPPEDPAWS),
300 SNMP_MIB_ITEM("TCPACKSkippedSeq", LINUX_MIB_TCPACKSKIPPEDSEQ),
301 SNMP_MIB_ITEM("TCPACKSkippedFinWait2", LINUX_MIB_TCPACKSKIPPEDFINWAIT2),
302 SNMP_MIB_ITEM("TCPACKSkippedTimeWait", LINUX_MIB_TCPACKSKIPPEDTIMEWAIT),
303 SNMP_MIB_ITEM("TCPACKSkippedChallenge", LINUX_MIB_TCPACKSKIPPEDCHALLENGE),
304 SNMP_MIB_ITEM("TCPWinProbe", LINUX_MIB_TCPWINPROBE),
305 SNMP_MIB_ITEM("TCPKeepAlive", LINUX_MIB_TCPKEEPALIVE),
306 SNMP_MIB_ITEM("TCPMTUPFail", LINUX_MIB_TCPMTUPFAIL),
307 SNMP_MIB_ITEM("TCPMTUPSuccess", LINUX_MIB_TCPMTUPSUCCESS),
308 SNMP_MIB_SENTINEL
309 };
310
311 static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
312 unsigned short *type, int count)
313 {
314 int j;
315
316 if (count) {
317 seq_puts(seq, "\nIcmpMsg:");
318 for (j = 0; j < count; ++j)
319 seq_printf(seq, " %sType%u",
320 type[j] & 0x100 ? "Out" : "In",
321 type[j] & 0xff);
322 seq_puts(seq, "\nIcmpMsg:");
323 for (j = 0; j < count; ++j)
324 seq_printf(seq, " %lu", vals[j]);
325 }
326 }
327
328 static void icmpmsg_put(struct seq_file *seq)
329 {
330 #define PERLINE 16
331
332 int i, count;
333 unsigned short type[PERLINE];
334 unsigned long vals[PERLINE], val;
335 struct net *net = seq->private;
336
337 count = 0;
338 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
339 val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]);
340 if (val) {
341 type[count] = i;
342 vals[count++] = val;
343 }
344 if (count == PERLINE) {
345 icmpmsg_put_line(seq, vals, type, count);
346 count = 0;
347 }
348 }
349 icmpmsg_put_line(seq, vals, type, count);
350
351 #undef PERLINE
352 }
353
354 static void icmp_put(struct seq_file *seq)
355 {
356 int i;
357 struct net *net = seq->private;
358 atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs;
359
360 seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors");
361 for (i = 0; icmpmibmap[i].name; i++)
362 seq_printf(seq, " In%s", icmpmibmap[i].name);
363 seq_puts(seq, " OutMsgs OutErrors");
364 for (i = 0; icmpmibmap[i].name; i++)
365 seq_printf(seq, " Out%s", icmpmibmap[i].name);
366 seq_printf(seq, "\nIcmp: %lu %lu %lu",
367 snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INMSGS),
368 snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INERRORS),
369 snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS));
370 for (i = 0; icmpmibmap[i].name; i++)
371 seq_printf(seq, " %lu",
372 atomic_long_read(ptr + icmpmibmap[i].index));
373 seq_printf(seq, " %lu %lu",
374 snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
375 snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
376 for (i = 0; icmpmibmap[i].name; i++)
377 seq_printf(seq, " %lu",
378 atomic_long_read(ptr + (icmpmibmap[i].index | 0x100)));
379 }
380
381 /*
382 * Called from the PROCfs module. This outputs /proc/net/snmp.
383 */
384 static int snmp_seq_show_ipstats(struct seq_file *seq, void *v)
385 {
386 struct net *net = seq->private;
387 u64 buff64[IPSTATS_MIB_MAX];
388 int i;
389
390 memset(buff64, 0, IPSTATS_MIB_MAX * sizeof(u64));
391
392 seq_puts(seq, "Ip: Forwarding DefaultTTL");
393 for (i = 0; snmp4_ipstats_list[i].name; i++)
394 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
395
396 seq_printf(seq, "\nIp: %d %d",
397 IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
398 net->ipv4.sysctl_ip_default_ttl);
399
400 BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
401 snmp_get_cpu_field64_batch(buff64, snmp4_ipstats_list,
402 net->mib.ip_statistics,
403 offsetof(struct ipstats_mib, syncp));
404 for (i = 0; snmp4_ipstats_list[i].name; i++)
405 seq_printf(seq, " %llu", buff64[i]);
406
407 return 0;
408 }
409
410 static int snmp_seq_show_tcp_udp(struct seq_file *seq, void *v)
411 {
412 unsigned long buff[TCPUDP_MIB_MAX];
413 struct net *net = seq->private;
414 int i;
415
416 memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));
417
418 seq_puts(seq, "\nTcp:");
419 for (i = 0; snmp4_tcp_list[i].name; i++)
420 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
421
422 seq_puts(seq, "\nTcp:");
423 snmp_get_cpu_field_batch(buff, snmp4_tcp_list,
424 net->mib.tcp_statistics);
425 for (i = 0; snmp4_tcp_list[i].name; i++) {
426 /* MaxConn field is signed, RFC 2012 */
427 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
428 seq_printf(seq, " %ld", buff[i]);
429 else
430 seq_printf(seq, " %lu", buff[i]);
431 }
432
433 memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));
434
435 snmp_get_cpu_field_batch(buff, snmp4_udp_list,
436 net->mib.udp_statistics);
437 seq_puts(seq, "\nUdp:");
438 for (i = 0; snmp4_udp_list[i].name; i++)
439 seq_printf(seq, " %s", snmp4_udp_list[i].name);
440 seq_puts(seq, "\nUdp:");
441 for (i = 0; snmp4_udp_list[i].name; i++)
442 seq_printf(seq, " %lu", buff[i]);
443
444 memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long));
445
446 /* the UDP and UDP-Lite MIBs are the same */
447 seq_puts(seq, "\nUdpLite:");
448 snmp_get_cpu_field_batch(buff, snmp4_udp_list,
449 net->mib.udplite_statistics);
450 for (i = 0; snmp4_udp_list[i].name; i++)
451 seq_printf(seq, " %s", snmp4_udp_list[i].name);
452 seq_puts(seq, "\nUdpLite:");
453 for (i = 0; snmp4_udp_list[i].name; i++)
454 seq_printf(seq, " %lu", buff[i]);
455
456 seq_putc(seq, '\n');
457 return 0;
458 }
459
460 static int snmp_seq_show(struct seq_file *seq, void *v)
461 {
462 snmp_seq_show_ipstats(seq, v);
463
464 icmp_put(seq); /* RFC 2011 compatibility */
465 icmpmsg_put(seq);
466
467 snmp_seq_show_tcp_udp(seq, v);
468
469 return 0;
470 }
471
472 static int snmp_seq_open(struct inode *inode, struct file *file)
473 {
474 return single_open_net(inode, file, snmp_seq_show);
475 }
476
477 static const struct file_operations snmp_seq_fops = {
478 .owner = THIS_MODULE,
479 .open = snmp_seq_open,
480 .read = seq_read,
481 .llseek = seq_lseek,
482 .release = single_release_net,
483 };
484
485
486
487 /*
488 * Output /proc/net/netstat
489 */
490 static int netstat_seq_show(struct seq_file *seq, void *v)
491 {
492 int i;
493 struct net *net = seq->private;
494
495 seq_puts(seq, "TcpExt:");
496 for (i = 0; snmp4_net_list[i].name; i++)
497 seq_printf(seq, " %s", snmp4_net_list[i].name);
498
499 seq_puts(seq, "\nTcpExt:");
500 for (i = 0; snmp4_net_list[i].name; i++)
501 seq_printf(seq, " %lu",
502 snmp_fold_field(net->mib.net_statistics,
503 snmp4_net_list[i].entry));
504
505 seq_puts(seq, "\nIpExt:");
506 for (i = 0; snmp4_ipextstats_list[i].name; i++)
507 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
508
509 seq_puts(seq, "\nIpExt:");
510 for (i = 0; snmp4_ipextstats_list[i].name; i++)
511 seq_printf(seq, " %llu",
512 snmp_fold_field64(net->mib.ip_statistics,
513 snmp4_ipextstats_list[i].entry,
514 offsetof(struct ipstats_mib, syncp)));
515
516 seq_putc(seq, '\n');
517 return 0;
518 }
519
520 static int netstat_seq_open(struct inode *inode, struct file *file)
521 {
522 return single_open_net(inode, file, netstat_seq_show);
523 }
524
525 static const struct file_operations netstat_seq_fops = {
526 .owner = THIS_MODULE,
527 .open = netstat_seq_open,
528 .read = seq_read,
529 .llseek = seq_lseek,
530 .release = single_release_net,
531 };
532
533 static __net_init int ip_proc_init_net(struct net *net)
534 {
535 if (!proc_create("sockstat", S_IRUGO, net->proc_net,
536 &sockstat_seq_fops))
537 goto out_sockstat;
538 if (!proc_create("netstat", S_IRUGO, net->proc_net, &netstat_seq_fops))
539 goto out_netstat;
540 if (!proc_create("snmp", S_IRUGO, net->proc_net, &snmp_seq_fops))
541 goto out_snmp;
542
543 return 0;
544
545 out_snmp:
546 remove_proc_entry("netstat", net->proc_net);
547 out_netstat:
548 remove_proc_entry("sockstat", net->proc_net);
549 out_sockstat:
550 return -ENOMEM;
551 }
552
553 static __net_exit void ip_proc_exit_net(struct net *net)
554 {
555 remove_proc_entry("snmp", net->proc_net);
556 remove_proc_entry("netstat", net->proc_net);
557 remove_proc_entry("sockstat", net->proc_net);
558 }
559
560 static __net_initdata struct pernet_operations ip_proc_ops = {
561 .init = ip_proc_init_net,
562 .exit = ip_proc_exit_net,
563 };
564
565 int __init ip_misc_proc_init(void)
566 {
567 return register_pernet_subsys(&ip_proc_ops);
568 }
569
Linux with added FPC-III support