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Commit | Line | Data |
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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 | ||
f22d5c49 JH |
49 | #define TCPUDP_MIB_MAX max_t(u32, UDP_MIB_MAX, TCP_MIB_MAX) |
50 | ||
1da177e4 LT |
51 | /* |
52 | * Report socket allocation statistics [mea@utu.fi] | |
53 | */ | |
54 | static int sockstat_seq_show(struct seq_file *seq, void *v) | |
55 | { | |
fd4e7b50 | 56 | struct net *net = seq->private; |
eb4dea58 HX |
57 | int orphans, sockets; |
58 | ||
1c10c49d | 59 | orphans = percpu_counter_sum_positive(&tcp_orphan_count); |
180d8cd9 | 60 | sockets = proto_sockets_allocated_sum_positive(&tcp_prot); |
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 | 64 | sock_prot_inuse_get(net, &tcp_prot), orphans, |
1946e672 | 65 | atomic_read(&net->ipv4.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)); |
6befe4a7 ED |
74 | seq_printf(seq, "FRAG: inuse %u memory %u\n", |
75 | atomic_read(&net->ipv4.frags.rhashtable.nelems), | |
76 | frag_mem_limit(&net->ipv4.frags)); | |
1da177e4 LT |
77 | return 0; |
78 | } | |
79 | ||
80 | static int sockstat_seq_open(struct inode *inode, struct file *file) | |
81 | { | |
de05c557 | 82 | return single_open_net(inode, file, sockstat_seq_show); |
fd4e7b50 PE |
83 | } |
84 | ||
9a32144e | 85 | static const struct file_operations sockstat_seq_fops = { |
1da177e4 LT |
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 | 93 | static 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 |
115 | static 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 |
137 | static 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 | 156 | static 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 | 175 | static 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), |
36cbb245 | 183 | SNMP_MIB_ITEM("IgnoredMulti", UDP_MIB_IGNOREDMULTI), |
1da177e4 LT |
184 | SNMP_MIB_SENTINEL |
185 | }; | |
186 | ||
9b5b5cff | 187 | static const struct snmp_mib snmp4_net_list[] = { |
1da177e4 LT |
188 | SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT), |
189 | SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV), | |
190 | SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED), | |
191 | SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS), | |
192 | SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED), | |
193 | SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED), | |
194 | SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED), | |
195 | SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS), | |
196 | SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS), | |
197 | SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER), | |
198 | SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED), | |
199 | SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED), | |
200 | SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED), | |
1da177e4 LT |
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), | |
31770e34 | 208 | SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS), |
1da177e4 | 209 | SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS), |
31770e34 | 210 | SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS), |
1da177e4 LT |
211 | SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY), |
212 | SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY), | |
213 | SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING), | |
1da177e4 LT |
214 | SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER), |
215 | SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER), | |
216 | SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER), | |
217 | SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO), | |
218 | SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO), | |
219 | SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO), | |
220 | SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO), | |
1da177e4 LT |
221 | SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT), |
222 | SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES), | |
223 | SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES), | |
224 | SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES), | |
225 | SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS), | |
1da177e4 LT |
226 | SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS), |
227 | SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS), | |
6ba8a3b1 | 228 | SNMP_MIB_ITEM("TCPLossProbes", LINUX_MIB_TCPLOSSPROBES), |
9b717a8d | 229 | SNMP_MIB_ITEM("TCPLossProbeRecovery", LINUX_MIB_TCPLOSSPROBERECOVERY), |
1da177e4 LT |
230 | SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL), |
231 | SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL), | |
1da177e4 LT |
232 | SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED), |
233 | SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT), | |
234 | SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT), | |
235 | SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV), | |
236 | SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV), | |
1da177e4 LT |
237 | SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA), |
238 | SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE), | |
239 | SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY), | |
240 | SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT), | |
241 | SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER), | |
242 | SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED), | |
243 | SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES), | |
06044751 | 244 | SNMP_MIB_ITEM("TCPMemoryPressuresChrono", LINUX_MIB_TCPMEMORYPRESSURESCHRONO), |
18f02545 IJ |
245 | SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD), |
246 | SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD), | |
247 | SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO), | |
912d8f0b | 248 | SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS), |
785957d3 DM |
249 | SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND), |
250 | SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED), | |
72145a68 | 251 | SNMP_MIB_ITEM("TCPMD5Failure", LINUX_MIB_TCPMD5FAILURE), |
111cc8b9 IJ |
252 | SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED), |
253 | SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED), | |
254 | SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK), | |
6cce09f8 | 255 | SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP), |
8fe809a9 | 256 | SNMP_MIB_ITEM("PFMemallocDrop", LINUX_MIB_PFMEMALLOCDROP), |
6cce09f8 | 257 | SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP), |
907cdda5 | 258 | SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP), |
b5f7e755 | 259 | SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER), |
67631510 | 260 | SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW), |
946cedcc ED |
261 | SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES), |
262 | SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP), | |
09e9b813 | 263 | SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL), |
c8628155 | 264 | SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE), |
a6df1ae9 ED |
265 | SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE), |
266 | SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP), | |
267 | SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE), | |
282f23c6 | 268 | SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK), |
0c24604b | 269 | SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE), |
783237e8 | 270 | SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE), |
f19c29e3 | 271 | SNMP_MIB_ITEM("TCPFastOpenActiveFail", LINUX_MIB_TCPFASTOPENACTIVEFAIL), |
10467163 JC |
272 | SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE), |
273 | SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL), | |
274 | SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW), | |
275 | SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD), | |
46c2fa39 | 276 | SNMP_MIB_ITEM("TCPFastOpenBlackhole", LINUX_MIB_TCPFASTOPENBLACKHOLE), |
0e280af0 | 277 | SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES), |
288a9376 | 278 | SNMP_MIB_ITEM("BusyPollRxPackets", LINUX_MIB_BUSYPOLLRXPACKETS), |
f54b3111 | 279 | SNMP_MIB_ITEM("TCPAutoCorking", LINUX_MIB_TCPAUTOCORKING), |
8e165e20 FW |
280 | SNMP_MIB_ITEM("TCPFromZeroWindowAdv", LINUX_MIB_TCPFROMZEROWINDOWADV), |
281 | SNMP_MIB_ITEM("TCPToZeroWindowAdv", LINUX_MIB_TCPTOZEROWINDOWADV), | |
282 | SNMP_MIB_ITEM("TCPWantZeroWindowAdv", LINUX_MIB_TCPWANTZEROWINDOWADV), | |
f19c29e3 YC |
283 | SNMP_MIB_ITEM("TCPSynRetrans", LINUX_MIB_TCPSYNRETRANS), |
284 | SNMP_MIB_ITEM("TCPOrigDataSent", LINUX_MIB_TCPORIGDATASENT), | |
6e3a8a93 ED |
285 | SNMP_MIB_ITEM("TCPHystartTrainDetect", LINUX_MIB_TCPHYSTARTTRAINDETECT), |
286 | SNMP_MIB_ITEM("TCPHystartTrainCwnd", LINUX_MIB_TCPHYSTARTTRAINCWND), | |
287 | SNMP_MIB_ITEM("TCPHystartDelayDetect", LINUX_MIB_TCPHYSTARTDELAYDETECT), | |
288 | SNMP_MIB_ITEM("TCPHystartDelayCwnd", LINUX_MIB_TCPHYSTARTDELAYCWND), | |
032ee423 NC |
289 | SNMP_MIB_ITEM("TCPACKSkippedSynRecv", LINUX_MIB_TCPACKSKIPPEDSYNRECV), |
290 | SNMP_MIB_ITEM("TCPACKSkippedPAWS", LINUX_MIB_TCPACKSKIPPEDPAWS), | |
291 | SNMP_MIB_ITEM("TCPACKSkippedSeq", LINUX_MIB_TCPACKSKIPPEDSEQ), | |
292 | SNMP_MIB_ITEM("TCPACKSkippedFinWait2", LINUX_MIB_TCPACKSKIPPEDFINWAIT2), | |
293 | SNMP_MIB_ITEM("TCPACKSkippedTimeWait", LINUX_MIB_TCPACKSKIPPEDTIMEWAIT), | |
294 | SNMP_MIB_ITEM("TCPACKSkippedChallenge", LINUX_MIB_TCPACKSKIPPEDCHALLENGE), | |
e520af48 ED |
295 | SNMP_MIB_ITEM("TCPWinProbe", LINUX_MIB_TCPWINPROBE), |
296 | SNMP_MIB_ITEM("TCPKeepAlive", LINUX_MIB_TCPKEEPALIVE), | |
b56ea298 RJ |
297 | SNMP_MIB_ITEM("TCPMTUPFail", LINUX_MIB_TCPMTUPFAIL), |
298 | SNMP_MIB_ITEM("TCPMTUPSuccess", LINUX_MIB_TCPMTUPSUCCESS), | |
1da177e4 LT |
299 | SNMP_MIB_SENTINEL |
300 | }; | |
301 | ||
b971e7ac ED |
302 | static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals, |
303 | unsigned short *type, int count) | |
304 | { | |
305 | int j; | |
306 | ||
307 | if (count) { | |
c9f503b0 | 308 | seq_puts(seq, "\nIcmpMsg:"); |
b971e7ac ED |
309 | for (j = 0; j < count; ++j) |
310 | seq_printf(seq, " %sType%u", | |
311 | type[j] & 0x100 ? "Out" : "In", | |
312 | type[j] & 0xff); | |
c9f503b0 | 313 | seq_puts(seq, "\nIcmpMsg:"); |
b971e7ac ED |
314 | for (j = 0; j < count; ++j) |
315 | seq_printf(seq, " %lu", vals[j]); | |
316 | } | |
317 | } | |
318 | ||
96793b48 DS |
319 | static void icmpmsg_put(struct seq_file *seq) |
320 | { | |
321 | #define PERLINE 16 | |
322 | ||
b971e7ac ED |
323 | int i, count; |
324 | unsigned short type[PERLINE]; | |
325 | unsigned long vals[PERLINE], val; | |
229bf0cb | 326 | struct net *net = seq->private; |
96793b48 DS |
327 | |
328 | count = 0; | |
329 | for (i = 0; i < ICMPMSG_MIB_MAX; i++) { | |
acb32ba3 | 330 | val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]); |
b971e7ac ED |
331 | if (val) { |
332 | type[count] = i; | |
333 | vals[count++] = val; | |
334 | } | |
335 | if (count == PERLINE) { | |
336 | icmpmsg_put_line(seq, vals, type, count); | |
337 | count = 0; | |
338 | } | |
96793b48 | 339 | } |
b971e7ac | 340 | icmpmsg_put_line(seq, vals, type, count); |
96793b48 DS |
341 | |
342 | #undef PERLINE | |
343 | } | |
344 | ||
345 | static void icmp_put(struct seq_file *seq) | |
346 | { | |
347 | int i; | |
229bf0cb | 348 | struct net *net = seq->private; |
acb32ba3 | 349 | atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs; |
96793b48 | 350 | |
6a5dc9e5 | 351 | seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors"); |
6d4a741c | 352 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 353 | seq_printf(seq, " In%s", icmpmibmap[i].name); |
c9f503b0 | 354 | seq_puts(seq, " OutMsgs OutErrors"); |
6d4a741c | 355 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 356 | seq_printf(seq, " Out%s", icmpmibmap[i].name); |
6a5dc9e5 | 357 | seq_printf(seq, "\nIcmp: %lu %lu %lu", |
698365fa WC |
358 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INMSGS), |
359 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INERRORS), | |
360 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS)); | |
6d4a741c | 361 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 362 | seq_printf(seq, " %lu", |
acb32ba3 | 363 | atomic_long_read(ptr + icmpmibmap[i].index)); |
96793b48 | 364 | seq_printf(seq, " %lu %lu", |
698365fa WC |
365 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTMSGS), |
366 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS)); | |
6d4a741c | 367 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 368 | seq_printf(seq, " %lu", |
acb32ba3 | 369 | atomic_long_read(ptr + (icmpmibmap[i].index | 0x100))); |
96793b48 DS |
370 | } |
371 | ||
1da177e4 LT |
372 | /* |
373 | * Called from the PROCfs module. This outputs /proc/net/snmp. | |
374 | */ | |
f22d5c49 | 375 | static int snmp_seq_show_ipstats(struct seq_file *seq, void *v) |
1da177e4 | 376 | { |
229bf0cb | 377 | struct net *net = seq->private; |
f22d5c49 JH |
378 | u64 buff64[IPSTATS_MIB_MAX]; |
379 | int i; | |
1da177e4 | 380 | |
f22d5c49 | 381 | memset(buff64, 0, IPSTATS_MIB_MAX * sizeof(u64)); |
1da177e4 | 382 | |
f22d5c49 | 383 | seq_puts(seq, "Ip: Forwarding DefaultTTL"); |
6d4a741c | 384 | for (i = 0; snmp4_ipstats_list[i].name; i++) |
1da177e4 LT |
385 | seq_printf(seq, " %s", snmp4_ipstats_list[i].name); |
386 | ||
387 | seq_printf(seq, "\nIp: %d %d", | |
8e3461d0 | 388 | IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2, |
fa50d974 | 389 | net->ipv4.sysctl_ip_default_ttl); |
1da177e4 | 390 | |
4ce3c183 | 391 | BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0); |
f22d5c49 JH |
392 | snmp_get_cpu_field64_batch(buff64, snmp4_ipstats_list, |
393 | net->mib.ip_statistics, | |
394 | offsetof(struct ipstats_mib, syncp)); | |
6d4a741c | 395 | for (i = 0; snmp4_ipstats_list[i].name; i++) |
f22d5c49 | 396 | seq_printf(seq, " %llu", buff64[i]); |
1da177e4 | 397 | |
f22d5c49 JH |
398 | return 0; |
399 | } | |
400 | ||
401 | static int snmp_seq_show_tcp_udp(struct seq_file *seq, void *v) | |
402 | { | |
403 | unsigned long buff[TCPUDP_MIB_MAX]; | |
404 | struct net *net = seq->private; | |
405 | int i; | |
406 | ||
407 | memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long)); | |
1da177e4 LT |
408 | |
409 | seq_puts(seq, "\nTcp:"); | |
6d4a741c | 410 | for (i = 0; snmp4_tcp_list[i].name; i++) |
1da177e4 LT |
411 | seq_printf(seq, " %s", snmp4_tcp_list[i].name); |
412 | ||
413 | seq_puts(seq, "\nTcp:"); | |
f22d5c49 JH |
414 | snmp_get_cpu_field_batch(buff, snmp4_tcp_list, |
415 | net->mib.tcp_statistics); | |
6d4a741c | 416 | for (i = 0; snmp4_tcp_list[i].name; i++) { |
1da177e4 LT |
417 | /* MaxConn field is signed, RFC 2012 */ |
418 | if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN) | |
f22d5c49 | 419 | seq_printf(seq, " %ld", buff[i]); |
1da177e4 | 420 | else |
f22d5c49 | 421 | seq_printf(seq, " %lu", buff[i]); |
1da177e4 LT |
422 | } |
423 | ||
f22d5c49 JH |
424 | memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long)); |
425 | ||
426 | snmp_get_cpu_field_batch(buff, snmp4_udp_list, | |
427 | net->mib.udp_statistics); | |
1da177e4 | 428 | seq_puts(seq, "\nUdp:"); |
6d4a741c | 429 | for (i = 0; snmp4_udp_list[i].name; i++) |
1da177e4 | 430 | seq_printf(seq, " %s", snmp4_udp_list[i].name); |
1da177e4 | 431 | seq_puts(seq, "\nUdp:"); |
6d4a741c | 432 | for (i = 0; snmp4_udp_list[i].name; i++) |
f22d5c49 JH |
433 | seq_printf(seq, " %lu", buff[i]); |
434 | ||
435 | memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long)); | |
1da177e4 | 436 | |
ba4e58ec GR |
437 | /* the UDP and UDP-Lite MIBs are the same */ |
438 | seq_puts(seq, "\nUdpLite:"); | |
f22d5c49 JH |
439 | snmp_get_cpu_field_batch(buff, snmp4_udp_list, |
440 | net->mib.udplite_statistics); | |
6d4a741c | 441 | for (i = 0; snmp4_udp_list[i].name; i++) |
ba4e58ec | 442 | seq_printf(seq, " %s", snmp4_udp_list[i].name); |
ba4e58ec | 443 | seq_puts(seq, "\nUdpLite:"); |
6d4a741c | 444 | for (i = 0; snmp4_udp_list[i].name; i++) |
f22d5c49 | 445 | seq_printf(seq, " %lu", buff[i]); |
db8dac20 | 446 | |
1da177e4 LT |
447 | seq_putc(seq, '\n'); |
448 | return 0; | |
449 | } | |
450 | ||
f22d5c49 JH |
451 | static int snmp_seq_show(struct seq_file *seq, void *v) |
452 | { | |
453 | snmp_seq_show_ipstats(seq, v); | |
454 | ||
455 | icmp_put(seq); /* RFC 2011 compatibility */ | |
456 | icmpmsg_put(seq); | |
457 | ||
458 | snmp_seq_show_tcp_udp(seq, v); | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
1da177e4 LT |
463 | static int snmp_seq_open(struct inode *inode, struct file *file) |
464 | { | |
de05c557 | 465 | return single_open_net(inode, file, snmp_seq_show); |
229bf0cb PE |
466 | } |
467 | ||
9a32144e | 468 | static const struct file_operations snmp_seq_fops = { |
1da177e4 LT |
469 | .open = snmp_seq_open, |
470 | .read = seq_read, | |
471 | .llseek = seq_lseek, | |
b6fcbdb4 | 472 | .release = single_release_net, |
1da177e4 LT |
473 | }; |
474 | ||
96793b48 DS |
475 | |
476 | ||
1da177e4 LT |
477 | /* |
478 | * Output /proc/net/netstat | |
479 | */ | |
480 | static int netstat_seq_show(struct seq_file *seq, void *v) | |
481 | { | |
482 | int i; | |
7b7a9dfd | 483 | struct net *net = seq->private; |
1da177e4 LT |
484 | |
485 | seq_puts(seq, "TcpExt:"); | |
6d4a741c | 486 | for (i = 0; snmp4_net_list[i].name; i++) |
1da177e4 LT |
487 | seq_printf(seq, " %s", snmp4_net_list[i].name); |
488 | ||
489 | seq_puts(seq, "\nTcpExt:"); | |
6d4a741c | 490 | for (i = 0; snmp4_net_list[i].name; i++) |
1da177e4 | 491 | seq_printf(seq, " %lu", |
698365fa | 492 | snmp_fold_field(net->mib.net_statistics, |
5e0f0435 | 493 | snmp4_net_list[i].entry)); |
1da177e4 | 494 | |
d831666e | 495 | seq_puts(seq, "\nIpExt:"); |
6d4a741c | 496 | for (i = 0; snmp4_ipextstats_list[i].name; i++) |
d831666e MC |
497 | seq_printf(seq, " %s", snmp4_ipextstats_list[i].name); |
498 | ||
499 | seq_puts(seq, "\nIpExt:"); | |
6d4a741c | 500 | for (i = 0; snmp4_ipextstats_list[i].name; i++) |
4ce3c183 | 501 | seq_printf(seq, " %llu", |
698365fa | 502 | snmp_fold_field64(net->mib.ip_statistics, |
4ce3c183 ED |
503 | snmp4_ipextstats_list[i].entry, |
504 | offsetof(struct ipstats_mib, syncp))); | |
d831666e | 505 | |
1da177e4 LT |
506 | seq_putc(seq, '\n'); |
507 | return 0; | |
508 | } | |
509 | ||
510 | static int netstat_seq_open(struct inode *inode, struct file *file) | |
511 | { | |
de05c557 | 512 | return single_open_net(inode, file, netstat_seq_show); |
7b7a9dfd PE |
513 | } |
514 | ||
9a32144e | 515 | static const struct file_operations netstat_seq_fops = { |
1da177e4 LT |
516 | .open = netstat_seq_open, |
517 | .read = seq_read, | |
518 | .llseek = seq_lseek, | |
b6fcbdb4 | 519 | .release = single_release_net, |
1da177e4 LT |
520 | }; |
521 | ||
d0538ca3 PE |
522 | static __net_init int ip_proc_init_net(struct net *net) |
523 | { | |
d6444062 | 524 | if (!proc_create("sockstat", 0444, net->proc_net, |
d4beaa66 | 525 | &sockstat_seq_fops)) |
60bdde95 | 526 | goto out_sockstat; |
d6444062 | 527 | if (!proc_create("netstat", 0444, net->proc_net, &netstat_seq_fops)) |
7b7a9dfd | 528 | goto out_netstat; |
d6444062 | 529 | if (!proc_create("snmp", 0444, net->proc_net, &snmp_seq_fops)) |
229bf0cb | 530 | goto out_snmp; |
7b7a9dfd | 531 | |
d0538ca3 | 532 | return 0; |
7b7a9dfd | 533 | |
229bf0cb | 534 | out_snmp: |
ece31ffd | 535 | remove_proc_entry("netstat", net->proc_net); |
7b7a9dfd | 536 | out_netstat: |
ece31ffd | 537 | remove_proc_entry("sockstat", net->proc_net); |
60bdde95 | 538 | out_sockstat: |
7b7a9dfd | 539 | return -ENOMEM; |
d0538ca3 PE |
540 | } |
541 | ||
542 | static __net_exit void ip_proc_exit_net(struct net *net) | |
543 | { | |
ece31ffd G |
544 | remove_proc_entry("snmp", net->proc_net); |
545 | remove_proc_entry("netstat", net->proc_net); | |
546 | remove_proc_entry("sockstat", net->proc_net); | |
d0538ca3 PE |
547 | } |
548 | ||
549 | static __net_initdata struct pernet_operations ip_proc_ops = { | |
550 | .init = ip_proc_init_net, | |
551 | .exit = ip_proc_exit_net, | |
552 | }; | |
553 | ||
1da177e4 LT |
554 | int __init ip_misc_proc_init(void) |
555 | { | |
60bdde95 | 556 | return register_pernet_subsys(&ip_proc_ops); |
1da177e4 | 557 | } |