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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * This file implements the various access functions for the | |
8 | * PROC file system. It is mainly used for debugging and | |
9 | * statistics. | |
10 | * | |
1da177e4 LT |
11 | * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
12 | * Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de> | |
13 | * Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de> | |
14 | * Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de> | |
15 | * | |
16 | * Fixes: | |
17 | * Alan Cox : UDP sockets show the rxqueue/txqueue | |
18 | * using hint flag for the netinfo. | |
19 | * Pauline Middelink : identd support | |
20 | * Alan Cox : Make /proc safer. | |
21 | * Erik Schoenfelder : /proc/net/snmp | |
22 | * Alan Cox : Handle dead sockets properly. | |
23 | * Gerhard Koerting : Show both timers | |
24 | * Alan Cox : Allow inode to be NULL (kernel socket) | |
25 | * Andi Kleen : Add support for open_requests and | |
26 | * split functions for more readibility. | |
27 | * Andi Kleen : Add support for /proc/net/netstat | |
28 | * Arnaldo C. Melo : Convert to seq_file | |
1da177e4 LT |
29 | */ |
30 | #include <linux/types.h> | |
457c4cbc | 31 | #include <net/net_namespace.h> |
1da177e4 LT |
32 | #include <net/icmp.h> |
33 | #include <net/protocol.h> | |
34 | #include <net/tcp.h> | |
fc518953 | 35 | #include <net/mptcp.h> |
f3d93817 | 36 | #include <net/proto_memory.h> |
1da177e4 | 37 | #include <net/udp.h> |
ba4e58ec | 38 | #include <net/udplite.h> |
eb4dea58 | 39 | #include <linux/bottom_half.h> |
14c85021 | 40 | #include <linux/inetdevice.h> |
1da177e4 LT |
41 | #include <linux/proc_fs.h> |
42 | #include <linux/seq_file.h> | |
bc3b2d7f | 43 | #include <linux/export.h> |
1da177e4 LT |
44 | #include <net/sock.h> |
45 | #include <net/raw.h> | |
46 | ||
f22d5c49 JH |
47 | #define TCPUDP_MIB_MAX max_t(u32, UDP_MIB_MAX, TCP_MIB_MAX) |
48 | ||
1da177e4 LT |
49 | /* |
50 | * Report socket allocation statistics [mea@utu.fi] | |
51 | */ | |
52 | static 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 | ||
19757ceb | 57 | orphans = tcp_orphan_count_sum(); |
180d8cd9 | 58 | sockets = proto_sockets_allocated_sum_positive(&tcp_prot); |
fd4e7b50 | 59 | |
1da177e4 | 60 | socket_seq_show(seq); |
8d987e5c | 61 | seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n", |
eb4dea58 | 62 | sock_prot_inuse_get(net, &tcp_prot), orphans, |
e9bd0cca | 63 | refcount_read(&net->ipv4.tcp_death_row.tw_refcount) - 1, |
fbb82952 | 64 | sockets, proto_memory_allocated(&tcp_prot)); |
8d987e5c | 65 | seq_printf(seq, "UDP: inuse %d mem %ld\n", |
fd4e7b50 | 66 | sock_prot_inuse_get(net, &udp_prot), |
180d8cd9 | 67 | proto_memory_allocated(&udp_prot)); |
c29a0bc4 | 68 | seq_printf(seq, "UDPLITE: inuse %d\n", |
fd4e7b50 | 69 | sock_prot_inuse_get(net, &udplite_prot)); |
c29a0bc4 | 70 | seq_printf(seq, "RAW: inuse %d\n", |
fd4e7b50 | 71 | sock_prot_inuse_get(net, &raw_prot)); |
3e67f106 | 72 | seq_printf(seq, "FRAG: inuse %u memory %lu\n", |
4907abc6 ED |
73 | atomic_read(&net->ipv4.fqdir->rhashtable.nelems), |
74 | frag_mem_limit(net->ipv4.fqdir)); | |
1da177e4 LT |
75 | return 0; |
76 | } | |
77 | ||
1da177e4 | 78 | /* snmp items */ |
9b5b5cff | 79 | static const struct snmp_mib snmp4_ipstats_list[] = { |
edf391ff | 80 | SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS), |
1da177e4 LT |
81 | SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS), |
82 | SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS), | |
83 | SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), | |
84 | SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), | |
85 | SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS), | |
86 | SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS), | |
b4a11b20 | 87 | SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS), |
1da177e4 LT |
88 | SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS), |
89 | SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), | |
90 | SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), | |
91 | SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS), | |
92 | SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS), | |
93 | SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS), | |
94 | SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS), | |
95 | SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS), | |
96 | SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES), | |
b4a11b20 | 97 | SNMP_MIB_ITEM("OutTransmits", IPSTATS_MIB_OUTPKTS), |
1da177e4 LT |
98 | SNMP_MIB_SENTINEL |
99 | }; | |
100 | ||
1f07d03e | 101 | /* Following items are displayed in /proc/net/netstat */ |
d831666e MC |
102 | static const struct snmp_mib snmp4_ipextstats_list[] = { |
103 | SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES), | |
104 | SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS), | |
105 | SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS), | |
106 | SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS), | |
107 | SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS), | |
108 | SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS), | |
edf391ff NH |
109 | SNMP_MIB_ITEM("InOctets", IPSTATS_MIB_INOCTETS), |
110 | SNMP_MIB_ITEM("OutOctets", IPSTATS_MIB_OUTOCTETS), | |
111 | SNMP_MIB_ITEM("InMcastOctets", IPSTATS_MIB_INMCASTOCTETS), | |
112 | SNMP_MIB_ITEM("OutMcastOctets", IPSTATS_MIB_OUTMCASTOCTETS), | |
113 | SNMP_MIB_ITEM("InBcastOctets", IPSTATS_MIB_INBCASTOCTETS), | |
114 | SNMP_MIB_ITEM("OutBcastOctets", IPSTATS_MIB_OUTBCASTOCTETS), | |
1f07d03e | 115 | /* Non RFC4293 fields */ |
6a5dc9e5 | 116 | SNMP_MIB_ITEM("InCsumErrors", IPSTATS_MIB_CSUMERRORS), |
1f07d03e ED |
117 | SNMP_MIB_ITEM("InNoECTPkts", IPSTATS_MIB_NOECTPKTS), |
118 | SNMP_MIB_ITEM("InECT1Pkts", IPSTATS_MIB_ECT1PKTS), | |
119 | SNMP_MIB_ITEM("InECT0Pkts", IPSTATS_MIB_ECT0PKTS), | |
120 | SNMP_MIB_ITEM("InCEPkts", IPSTATS_MIB_CEPKTS), | |
7969e5c4 | 121 | SNMP_MIB_ITEM("ReasmOverlaps", IPSTATS_MIB_REASM_OVERLAPS), |
d831666e MC |
122 | SNMP_MIB_SENTINEL |
123 | }; | |
124 | ||
5833929c AD |
125 | static const struct { |
126 | const char *name; | |
96793b48 DS |
127 | int index; |
128 | } icmpmibmap[] = { | |
129 | { "DestUnreachs", ICMP_DEST_UNREACH }, | |
130 | { "TimeExcds", ICMP_TIME_EXCEEDED }, | |
131 | { "ParmProbs", ICMP_PARAMETERPROB }, | |
132 | { "SrcQuenchs", ICMP_SOURCE_QUENCH }, | |
133 | { "Redirects", ICMP_REDIRECT }, | |
134 | { "Echos", ICMP_ECHO }, | |
135 | { "EchoReps", ICMP_ECHOREPLY }, | |
136 | { "Timestamps", ICMP_TIMESTAMP }, | |
137 | { "TimestampReps", ICMP_TIMESTAMPREPLY }, | |
138 | { "AddrMasks", ICMP_ADDRESS }, | |
139 | { "AddrMaskReps", ICMP_ADDRESSREPLY }, | |
cfcabdcc | 140 | { NULL, 0 } |
96793b48 DS |
141 | }; |
142 | ||
143 | ||
9b5b5cff | 144 | static const struct snmp_mib snmp4_tcp_list[] = { |
1da177e4 LT |
145 | SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM), |
146 | SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN), | |
147 | SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX), | |
148 | SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN), | |
149 | SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS), | |
150 | SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS), | |
151 | SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS), | |
152 | SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS), | |
153 | SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB), | |
154 | SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS), | |
155 | SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS), | |
156 | SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS), | |
157 | SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS), | |
158 | SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS), | |
6a5dc9e5 | 159 | SNMP_MIB_ITEM("InCsumErrors", TCP_MIB_CSUMERRORS), |
1da177e4 LT |
160 | SNMP_MIB_SENTINEL |
161 | }; | |
162 | ||
9b5b5cff | 163 | static const struct snmp_mib snmp4_udp_list[] = { |
1da177e4 LT |
164 | SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS), |
165 | SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS), | |
166 | SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS), | |
167 | SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS), | |
81aa646c MB |
168 | SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS), |
169 | SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS), | |
6a5dc9e5 | 170 | SNMP_MIB_ITEM("InCsumErrors", UDP_MIB_CSUMERRORS), |
36cbb245 | 171 | SNMP_MIB_ITEM("IgnoredMulti", UDP_MIB_IGNOREDMULTI), |
a3ce2b10 | 172 | SNMP_MIB_ITEM("MemErrors", UDP_MIB_MEMERRORS), |
1da177e4 LT |
173 | SNMP_MIB_SENTINEL |
174 | }; | |
175 | ||
9b5b5cff | 176 | static const struct snmp_mib snmp4_net_list[] = { |
1da177e4 LT |
177 | SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT), |
178 | SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV), | |
179 | SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED), | |
180 | SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS), | |
181 | SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED), | |
182 | SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED), | |
183 | SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED), | |
184 | SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS), | |
185 | SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS), | |
186 | SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER), | |
187 | SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED), | |
188 | SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED), | |
189 | SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED), | |
1da177e4 LT |
190 | SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED), |
191 | SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED), | |
192 | SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS), | |
193 | SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED), | |
194 | SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST), | |
195 | SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS), | |
196 | SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS), | |
31770e34 | 197 | SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS), |
1da177e4 | 198 | SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS), |
31770e34 | 199 | SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS), |
1da177e4 LT |
200 | SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY), |
201 | SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY), | |
202 | SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING), | |
1da177e4 LT |
203 | SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER), |
204 | SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER), | |
205 | SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER), | |
206 | SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO), | |
207 | SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO), | |
208 | SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO), | |
209 | SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO), | |
1da177e4 LT |
210 | SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT), |
211 | SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES), | |
212 | SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES), | |
213 | SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES), | |
214 | SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS), | |
1da177e4 LT |
215 | SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS), |
216 | SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS), | |
6ba8a3b1 | 217 | SNMP_MIB_ITEM("TCPLossProbes", LINUX_MIB_TCPLOSSPROBES), |
9b717a8d | 218 | SNMP_MIB_ITEM("TCPLossProbeRecovery", LINUX_MIB_TCPLOSSPROBERECOVERY), |
1da177e4 LT |
219 | SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL), |
220 | SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL), | |
1da177e4 | 221 | SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED), |
4f693b55 | 222 | SNMP_MIB_ITEM("TCPBacklogCoalesce", LINUX_MIB_TCPBACKLOGCOALESCE), |
1da177e4 LT |
223 | SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT), |
224 | SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT), | |
225 | SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV), | |
226 | SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV), | |
1da177e4 LT |
227 | SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA), |
228 | SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE), | |
229 | SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY), | |
230 | SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT), | |
231 | SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER), | |
232 | SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED), | |
233 | SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES), | |
06044751 | 234 | SNMP_MIB_ITEM("TCPMemoryPressuresChrono", LINUX_MIB_TCPMEMORYPRESSURESCHRONO), |
18f02545 IJ |
235 | SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD), |
236 | SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD), | |
237 | SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO), | |
912d8f0b | 238 | SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS), |
785957d3 DM |
239 | SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND), |
240 | SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED), | |
72145a68 | 241 | SNMP_MIB_ITEM("TCPMD5Failure", LINUX_MIB_TCPMD5FAILURE), |
111cc8b9 IJ |
242 | SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED), |
243 | SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED), | |
244 | SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK), | |
6cce09f8 | 245 | SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP), |
8fe809a9 | 246 | SNMP_MIB_ITEM("PFMemallocDrop", LINUX_MIB_PFMEMALLOCDROP), |
6cce09f8 | 247 | SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP), |
907cdda5 | 248 | SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP), |
b5f7e755 | 249 | SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER), |
67631510 | 250 | SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW), |
946cedcc ED |
251 | SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES), |
252 | SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP), | |
09e9b813 | 253 | SNMP_MIB_ITEM("TCPRetransFail", LINUX_MIB_TCPRETRANSFAIL), |
c8628155 | 254 | SNMP_MIB_ITEM("TCPRcvCoalesce", LINUX_MIB_TCPRCVCOALESCE), |
a6df1ae9 ED |
255 | SNMP_MIB_ITEM("TCPOFOQueue", LINUX_MIB_TCPOFOQUEUE), |
256 | SNMP_MIB_ITEM("TCPOFODrop", LINUX_MIB_TCPOFODROP), | |
257 | SNMP_MIB_ITEM("TCPOFOMerge", LINUX_MIB_TCPOFOMERGE), | |
282f23c6 | 258 | SNMP_MIB_ITEM("TCPChallengeACK", LINUX_MIB_TCPCHALLENGEACK), |
0c24604b | 259 | SNMP_MIB_ITEM("TCPSYNChallenge", LINUX_MIB_TCPSYNCHALLENGE), |
783237e8 | 260 | SNMP_MIB_ITEM("TCPFastOpenActive", LINUX_MIB_TCPFASTOPENACTIVE), |
f19c29e3 | 261 | SNMP_MIB_ITEM("TCPFastOpenActiveFail", LINUX_MIB_TCPFASTOPENACTIVEFAIL), |
10467163 JC |
262 | SNMP_MIB_ITEM("TCPFastOpenPassive", LINUX_MIB_TCPFASTOPENPASSIVE), |
263 | SNMP_MIB_ITEM("TCPFastOpenPassiveFail", LINUX_MIB_TCPFASTOPENPASSIVEFAIL), | |
264 | SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW), | |
265 | SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD), | |
46c2fa39 | 266 | SNMP_MIB_ITEM("TCPFastOpenBlackhole", LINUX_MIB_TCPFASTOPENBLACKHOLE), |
0e280af0 | 267 | SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES), |
288a9376 | 268 | SNMP_MIB_ITEM("BusyPollRxPackets", LINUX_MIB_BUSYPOLLRXPACKETS), |
f54b3111 | 269 | SNMP_MIB_ITEM("TCPAutoCorking", LINUX_MIB_TCPAUTOCORKING), |
8e165e20 FW |
270 | SNMP_MIB_ITEM("TCPFromZeroWindowAdv", LINUX_MIB_TCPFROMZEROWINDOWADV), |
271 | SNMP_MIB_ITEM("TCPToZeroWindowAdv", LINUX_MIB_TCPTOZEROWINDOWADV), | |
272 | SNMP_MIB_ITEM("TCPWantZeroWindowAdv", LINUX_MIB_TCPWANTZEROWINDOWADV), | |
f19c29e3 YC |
273 | SNMP_MIB_ITEM("TCPSynRetrans", LINUX_MIB_TCPSYNRETRANS), |
274 | SNMP_MIB_ITEM("TCPOrigDataSent", LINUX_MIB_TCPORIGDATASENT), | |
6e3a8a93 ED |
275 | SNMP_MIB_ITEM("TCPHystartTrainDetect", LINUX_MIB_TCPHYSTARTTRAINDETECT), |
276 | SNMP_MIB_ITEM("TCPHystartTrainCwnd", LINUX_MIB_TCPHYSTARTTRAINCWND), | |
277 | SNMP_MIB_ITEM("TCPHystartDelayDetect", LINUX_MIB_TCPHYSTARTDELAYDETECT), | |
278 | SNMP_MIB_ITEM("TCPHystartDelayCwnd", LINUX_MIB_TCPHYSTARTDELAYCWND), | |
032ee423 NC |
279 | SNMP_MIB_ITEM("TCPACKSkippedSynRecv", LINUX_MIB_TCPACKSKIPPEDSYNRECV), |
280 | SNMP_MIB_ITEM("TCPACKSkippedPAWS", LINUX_MIB_TCPACKSKIPPEDPAWS), | |
281 | SNMP_MIB_ITEM("TCPACKSkippedSeq", LINUX_MIB_TCPACKSKIPPEDSEQ), | |
282 | SNMP_MIB_ITEM("TCPACKSkippedFinWait2", LINUX_MIB_TCPACKSKIPPEDFINWAIT2), | |
283 | SNMP_MIB_ITEM("TCPACKSkippedTimeWait", LINUX_MIB_TCPACKSKIPPEDTIMEWAIT), | |
284 | SNMP_MIB_ITEM("TCPACKSkippedChallenge", LINUX_MIB_TCPACKSKIPPEDCHALLENGE), | |
e520af48 ED |
285 | SNMP_MIB_ITEM("TCPWinProbe", LINUX_MIB_TCPWINPROBE), |
286 | SNMP_MIB_ITEM("TCPKeepAlive", LINUX_MIB_TCPKEEPALIVE), | |
b56ea298 RJ |
287 | SNMP_MIB_ITEM("TCPMTUPFail", LINUX_MIB_TCPMTUPFAIL), |
288 | SNMP_MIB_ITEM("TCPMTUPSuccess", LINUX_MIB_TCPMTUPSUCCESS), | |
feb5f2ec YC |
289 | SNMP_MIB_ITEM("TCPDelivered", LINUX_MIB_TCPDELIVERED), |
290 | SNMP_MIB_ITEM("TCPDeliveredCE", LINUX_MIB_TCPDELIVEREDCE), | |
200d95f4 | 291 | SNMP_MIB_ITEM("TCPAckCompressed", LINUX_MIB_TCPACKCOMPRESSED), |
fb223502 | 292 | SNMP_MIB_ITEM("TCPZeroWindowDrop", LINUX_MIB_TCPZEROWINDOWDROP), |
ea5d0c32 | 293 | SNMP_MIB_ITEM("TCPRcvQDrop", LINUX_MIB_TCPRCVQDROP), |
f070ef2a | 294 | SNMP_MIB_ITEM("TCPWqueueTooBig", LINUX_MIB_TCPWQUEUETOOBIG), |
9092a76d | 295 | SNMP_MIB_ITEM("TCPFastOpenPassiveAltKey", LINUX_MIB_TCPFASTOPENPASSIVEALTKEY), |
32efcc06 AK |
296 | SNMP_MIB_ITEM("TcpTimeoutRehash", LINUX_MIB_TCPTIMEOUTREHASH), |
297 | SNMP_MIB_ITEM("TcpDuplicateDataRehash", LINUX_MIB_TCPDUPLICATEDATAREHASH), | |
e3a5a1e8 | 298 | SNMP_MIB_ITEM("TCPDSACKRecvSegs", LINUX_MIB_TCPDSACKRECVSEGS), |
ad2b9b0f | 299 | SNMP_MIB_ITEM("TCPDSACKIgnoredDubious", LINUX_MIB_TCPDSACKIGNOREDDUBIOUS), |
55d444b3 KI |
300 | SNMP_MIB_ITEM("TCPMigrateReqSuccess", LINUX_MIB_TCPMIGRATEREQSUCCESS), |
301 | SNMP_MIB_ITEM("TCPMigrateReqFailure", LINUX_MIB_TCPMIGRATEREQFAILURE), | |
29c1c446 | 302 | SNMP_MIB_ITEM("TCPPLBRehash", LINUX_MIB_TCPPLBREHASH), |
af09a341 DS |
303 | SNMP_MIB_ITEM("TCPAORequired", LINUX_MIB_TCPAOREQUIRED), |
304 | SNMP_MIB_ITEM("TCPAOBad", LINUX_MIB_TCPAOBAD), | |
305 | SNMP_MIB_ITEM("TCPAOKeyNotFound", LINUX_MIB_TCPAOKEYNOTFOUND), | |
306 | SNMP_MIB_ITEM("TCPAOGood", LINUX_MIB_TCPAOGOOD), | |
953af8e3 | 307 | SNMP_MIB_ITEM("TCPAODroppedIcmps", LINUX_MIB_TCPAODROPPEDICMPS), |
1da177e4 LT |
308 | SNMP_MIB_SENTINEL |
309 | }; | |
310 | ||
b971e7ac ED |
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) { | |
c9f503b0 | 317 | seq_puts(seq, "\nIcmpMsg:"); |
b971e7ac ED |
318 | for (j = 0; j < count; ++j) |
319 | seq_printf(seq, " %sType%u", | |
320 | type[j] & 0x100 ? "Out" : "In", | |
321 | type[j] & 0xff); | |
c9f503b0 | 322 | seq_puts(seq, "\nIcmpMsg:"); |
b971e7ac ED |
323 | for (j = 0; j < count; ++j) |
324 | seq_printf(seq, " %lu", vals[j]); | |
325 | } | |
326 | } | |
327 | ||
96793b48 DS |
328 | static void icmpmsg_put(struct seq_file *seq) |
329 | { | |
330 | #define PERLINE 16 | |
331 | ||
b971e7ac ED |
332 | int i, count; |
333 | unsigned short type[PERLINE]; | |
334 | unsigned long vals[PERLINE], val; | |
229bf0cb | 335 | struct net *net = seq->private; |
96793b48 DS |
336 | |
337 | count = 0; | |
338 | for (i = 0; i < ICMPMSG_MIB_MAX; i++) { | |
acb32ba3 | 339 | val = atomic_long_read(&net->mib.icmpmsg_statistics->mibs[i]); |
b971e7ac ED |
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 | } | |
96793b48 | 348 | } |
b971e7ac | 349 | icmpmsg_put_line(seq, vals, type, count); |
96793b48 DS |
350 | |
351 | #undef PERLINE | |
352 | } | |
353 | ||
354 | static void icmp_put(struct seq_file *seq) | |
355 | { | |
356 | int i; | |
229bf0cb | 357 | struct net *net = seq->private; |
acb32ba3 | 358 | atomic_long_t *ptr = net->mib.icmpmsg_statistics->mibs; |
96793b48 | 359 | |
6a5dc9e5 | 360 | seq_puts(seq, "\nIcmp: InMsgs InErrors InCsumErrors"); |
6d4a741c | 361 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 362 | seq_printf(seq, " In%s", icmpmibmap[i].name); |
d0941130 | 363 | seq_puts(seq, " OutMsgs OutErrors OutRateLimitGlobal OutRateLimitHost"); |
6d4a741c | 364 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 365 | seq_printf(seq, " Out%s", icmpmibmap[i].name); |
6a5dc9e5 | 366 | seq_printf(seq, "\nIcmp: %lu %lu %lu", |
698365fa WC |
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)); | |
6d4a741c | 370 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 371 | seq_printf(seq, " %lu", |
acb32ba3 | 372 | atomic_long_read(ptr + icmpmibmap[i].index)); |
d0941130 | 373 | seq_printf(seq, " %lu %lu %lu %lu", |
698365fa | 374 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTMSGS), |
d0941130 JB |
375 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS), |
376 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_RATELIMITGLOBAL), | |
377 | snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_RATELIMITHOST)); | |
6d4a741c | 378 | for (i = 0; icmpmibmap[i].name; i++) |
96793b48 | 379 | seq_printf(seq, " %lu", |
acb32ba3 | 380 | atomic_long_read(ptr + (icmpmibmap[i].index | 0x100))); |
96793b48 DS |
381 | } |
382 | ||
1da177e4 LT |
383 | /* |
384 | * Called from the PROCfs module. This outputs /proc/net/snmp. | |
385 | */ | |
f22d5c49 | 386 | static int snmp_seq_show_ipstats(struct seq_file *seq, void *v) |
1da177e4 | 387 | { |
229bf0cb | 388 | struct net *net = seq->private; |
f22d5c49 JH |
389 | u64 buff64[IPSTATS_MIB_MAX]; |
390 | int i; | |
1da177e4 | 391 | |
f22d5c49 | 392 | memset(buff64, 0, IPSTATS_MIB_MAX * sizeof(u64)); |
1da177e4 | 393 | |
f22d5c49 | 394 | seq_puts(seq, "Ip: Forwarding DefaultTTL"); |
6d4a741c | 395 | for (i = 0; snmp4_ipstats_list[i].name; i++) |
1da177e4 LT |
396 | seq_printf(seq, " %s", snmp4_ipstats_list[i].name); |
397 | ||
398 | seq_printf(seq, "\nIp: %d %d", | |
0598f8f3 | 399 | IPV4_DEVCONF_ALL_RO(net, FORWARDING) ? 1 : 2, |
8281b7ec | 400 | READ_ONCE(net->ipv4.sysctl_ip_default_ttl)); |
1da177e4 | 401 | |
4ce3c183 | 402 | BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0); |
f22d5c49 JH |
403 | snmp_get_cpu_field64_batch(buff64, snmp4_ipstats_list, |
404 | net->mib.ip_statistics, | |
405 | offsetof(struct ipstats_mib, syncp)); | |
6d4a741c | 406 | for (i = 0; snmp4_ipstats_list[i].name; i++) |
f22d5c49 | 407 | seq_printf(seq, " %llu", buff64[i]); |
1da177e4 | 408 | |
f22d5c49 JH |
409 | return 0; |
410 | } | |
411 | ||
412 | static int snmp_seq_show_tcp_udp(struct seq_file *seq, void *v) | |
413 | { | |
414 | unsigned long buff[TCPUDP_MIB_MAX]; | |
415 | struct net *net = seq->private; | |
416 | int i; | |
417 | ||
418 | memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long)); | |
1da177e4 LT |
419 | |
420 | seq_puts(seq, "\nTcp:"); | |
6d4a741c | 421 | for (i = 0; snmp4_tcp_list[i].name; i++) |
1da177e4 LT |
422 | seq_printf(seq, " %s", snmp4_tcp_list[i].name); |
423 | ||
424 | seq_puts(seq, "\nTcp:"); | |
f22d5c49 JH |
425 | snmp_get_cpu_field_batch(buff, snmp4_tcp_list, |
426 | net->mib.tcp_statistics); | |
6d4a741c | 427 | for (i = 0; snmp4_tcp_list[i].name; i++) { |
1da177e4 LT |
428 | /* MaxConn field is signed, RFC 2012 */ |
429 | if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN) | |
f22d5c49 | 430 | seq_printf(seq, " %ld", buff[i]); |
1da177e4 | 431 | else |
f22d5c49 | 432 | seq_printf(seq, " %lu", buff[i]); |
1da177e4 LT |
433 | } |
434 | ||
f22d5c49 JH |
435 | memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long)); |
436 | ||
437 | snmp_get_cpu_field_batch(buff, snmp4_udp_list, | |
438 | net->mib.udp_statistics); | |
1da177e4 | 439 | seq_puts(seq, "\nUdp:"); |
6d4a741c | 440 | for (i = 0; snmp4_udp_list[i].name; i++) |
1da177e4 | 441 | seq_printf(seq, " %s", snmp4_udp_list[i].name); |
1da177e4 | 442 | seq_puts(seq, "\nUdp:"); |
6d4a741c | 443 | for (i = 0; snmp4_udp_list[i].name; i++) |
f22d5c49 JH |
444 | seq_printf(seq, " %lu", buff[i]); |
445 | ||
446 | memset(buff, 0, TCPUDP_MIB_MAX * sizeof(unsigned long)); | |
1da177e4 | 447 | |
ba4e58ec GR |
448 | /* the UDP and UDP-Lite MIBs are the same */ |
449 | seq_puts(seq, "\nUdpLite:"); | |
f22d5c49 JH |
450 | snmp_get_cpu_field_batch(buff, snmp4_udp_list, |
451 | net->mib.udplite_statistics); | |
6d4a741c | 452 | for (i = 0; snmp4_udp_list[i].name; i++) |
ba4e58ec | 453 | seq_printf(seq, " %s", snmp4_udp_list[i].name); |
ba4e58ec | 454 | seq_puts(seq, "\nUdpLite:"); |
6d4a741c | 455 | for (i = 0; snmp4_udp_list[i].name; i++) |
f22d5c49 | 456 | seq_printf(seq, " %lu", buff[i]); |
db8dac20 | 457 | |
1da177e4 LT |
458 | seq_putc(seq, '\n'); |
459 | return 0; | |
460 | } | |
461 | ||
f22d5c49 JH |
462 | static int snmp_seq_show(struct seq_file *seq, void *v) |
463 | { | |
464 | snmp_seq_show_ipstats(seq, v); | |
465 | ||
466 | icmp_put(seq); /* RFC 2011 compatibility */ | |
467 | icmpmsg_put(seq); | |
468 | ||
469 | snmp_seq_show_tcp_udp(seq, v); | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
1da177e4 LT |
474 | /* |
475 | * Output /proc/net/netstat | |
476 | */ | |
477 | static int netstat_seq_show(struct seq_file *seq, void *v) | |
478 | { | |
0d6cd689 ED |
479 | const int ip_cnt = ARRAY_SIZE(snmp4_ipextstats_list) - 1; |
480 | const int tcp_cnt = ARRAY_SIZE(snmp4_net_list) - 1; | |
7b7a9dfd | 481 | struct net *net = seq->private; |
0d6cd689 ED |
482 | unsigned long *buff; |
483 | int i; | |
1da177e4 LT |
484 | |
485 | seq_puts(seq, "TcpExt:"); | |
0d6cd689 | 486 | for (i = 0; i < tcp_cnt; i++) |
1da177e4 LT |
487 | seq_printf(seq, " %s", snmp4_net_list[i].name); |
488 | ||
489 | seq_puts(seq, "\nTcpExt:"); | |
0d6cd689 ED |
490 | buff = kzalloc(max(tcp_cnt * sizeof(long), ip_cnt * sizeof(u64)), |
491 | GFP_KERNEL); | |
492 | if (buff) { | |
493 | snmp_get_cpu_field_batch(buff, snmp4_net_list, | |
494 | net->mib.net_statistics); | |
495 | for (i = 0; i < tcp_cnt; i++) | |
496 | seq_printf(seq, " %lu", buff[i]); | |
497 | } else { | |
498 | for (i = 0; i < tcp_cnt; i++) | |
499 | seq_printf(seq, " %lu", | |
500 | snmp_fold_field(net->mib.net_statistics, | |
501 | snmp4_net_list[i].entry)); | |
502 | } | |
d831666e | 503 | seq_puts(seq, "\nIpExt:"); |
0d6cd689 | 504 | for (i = 0; i < ip_cnt; i++) |
d831666e MC |
505 | seq_printf(seq, " %s", snmp4_ipextstats_list[i].name); |
506 | ||
507 | seq_puts(seq, "\nIpExt:"); | |
0d6cd689 ED |
508 | if (buff) { |
509 | u64 *buff64 = (u64 *)buff; | |
510 | ||
511 | memset(buff64, 0, ip_cnt * sizeof(u64)); | |
512 | snmp_get_cpu_field64_batch(buff64, snmp4_ipextstats_list, | |
513 | net->mib.ip_statistics, | |
514 | offsetof(struct ipstats_mib, syncp)); | |
515 | for (i = 0; i < ip_cnt; i++) | |
516 | seq_printf(seq, " %llu", buff64[i]); | |
517 | } else { | |
518 | for (i = 0; i < ip_cnt; i++) | |
519 | seq_printf(seq, " %llu", | |
520 | snmp_fold_field64(net->mib.ip_statistics, | |
521 | snmp4_ipextstats_list[i].entry, | |
522 | offsetof(struct ipstats_mib, syncp))); | |
523 | } | |
524 | kfree(buff); | |
1da177e4 | 525 | seq_putc(seq, '\n'); |
fc518953 | 526 | mptcp_seq_show(seq); |
1da177e4 LT |
527 | return 0; |
528 | } | |
529 | ||
d0538ca3 PE |
530 | static __net_init int ip_proc_init_net(struct net *net) |
531 | { | |
3617d949 CH |
532 | if (!proc_create_net_single("sockstat", 0444, net->proc_net, |
533 | sockstat_seq_show, NULL)) | |
60bdde95 | 534 | goto out_sockstat; |
3617d949 CH |
535 | if (!proc_create_net_single("netstat", 0444, net->proc_net, |
536 | netstat_seq_show, NULL)) | |
7b7a9dfd | 537 | goto out_netstat; |
3617d949 CH |
538 | if (!proc_create_net_single("snmp", 0444, net->proc_net, snmp_seq_show, |
539 | NULL)) | |
229bf0cb | 540 | goto out_snmp; |
7b7a9dfd | 541 | |
d0538ca3 | 542 | return 0; |
7b7a9dfd | 543 | |
229bf0cb | 544 | out_snmp: |
ece31ffd | 545 | remove_proc_entry("netstat", net->proc_net); |
7b7a9dfd | 546 | out_netstat: |
ece31ffd | 547 | remove_proc_entry("sockstat", net->proc_net); |
60bdde95 | 548 | out_sockstat: |
7b7a9dfd | 549 | return -ENOMEM; |
d0538ca3 PE |
550 | } |
551 | ||
552 | static __net_exit void ip_proc_exit_net(struct net *net) | |
553 | { | |
ece31ffd G |
554 | remove_proc_entry("snmp", net->proc_net); |
555 | remove_proc_entry("netstat", net->proc_net); | |
556 | remove_proc_entry("sockstat", net->proc_net); | |
d0538ca3 PE |
557 | } |
558 | ||
559 | static __net_initdata struct pernet_operations ip_proc_ops = { | |
560 | .init = ip_proc_init_net, | |
561 | .exit = ip_proc_exit_net, | |
562 | }; | |
563 | ||
1da177e4 LT |
564 | int __init ip_misc_proc_init(void) |
565 | { | |
60bdde95 | 566 | return register_pernet_subsys(&ip_proc_ops); |
1da177e4 | 567 | } |