Version:  2.0.40 2.2.26 2.4.37 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10

Linux/net/ipv4/proc.c

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

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us