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s390: Use HAVE_MEMBLOCK_NODE_MAP
[linux-2.6.git] / net / ipv4 / proc.c
blob466ea8bb7a4d916e41c838389c7dcaf2b7f01b4a
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 int orphans, sockets;
56
57 local_bh_disable();
58 orphans = percpu_counter_sum_positive(&tcp_orphan_count);
59 sockets = percpu_counter_sum_positive(&tcp_sockets_allocated);
60 local_bh_enable();
61
62 socket_seq_show(seq);
63 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %ld\n",
64 sock_prot_inuse_get(net, &tcp_prot), orphans,
65 tcp_death_row.tw_count, sockets,
66 atomic_long_read(&tcp_memory_allocated));
67 seq_printf(seq, "UDP: inuse %d mem %ld\n",
68 sock_prot_inuse_get(net, &udp_prot),
69 atomic_long_read(&udp_memory_allocated));
70 seq_printf(seq, "UDPLITE: inuse %d\n",
71 sock_prot_inuse_get(net, &udplite_prot));
72 seq_printf(seq, "RAW: inuse %d\n",
73 sock_prot_inuse_get(net, &raw_prot));
74 seq_printf(seq, "FRAG: inuse %d memory %d\n",
75 ip_frag_nqueues(net), ip_frag_mem(net));
76 return 0;
77 }
78
79 static int sockstat_seq_open(struct inode *inode, struct file *file)
80 {
81 return single_open_net(inode, file, sockstat_seq_show);
82 }
83
84 static const struct file_operations sockstat_seq_fops = {
85 .owner = THIS_MODULE,
86 .open = sockstat_seq_open,
87 .read = seq_read,
88 .llseek = seq_lseek,
89 .release = single_release_net,
90 };
91
92 /* snmp items */
93 static const struct snmp_mib snmp4_ipstats_list[] = {
94 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
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),
101 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTPKTS),
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
114 /* Following RFC4293 items are displayed in /proc/net/netstat */
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),
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),
128 SNMP_MIB_SENTINEL
129 };
130
131 static const struct {
132 const char *name;
133 int index;
134 } icmpmibmap[] = {
135 { "DestUnreachs", ICMP_DEST_UNREACH },
136 { "TimeExcds", ICMP_TIME_EXCEEDED },
137 { "ParmProbs", ICMP_PARAMETERPROB },
138 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
139 { "Redirects", ICMP_REDIRECT },
140 { "Echos", ICMP_ECHO },
141 { "EchoReps", ICMP_ECHOREPLY },
142 { "Timestamps", ICMP_TIMESTAMP },
143 { "TimestampReps", ICMP_TIMESTAMPREPLY },
144 { "AddrMasks", ICMP_ADDRESS },
145 { "AddrMaskReps", ICMP_ADDRESSREPLY },
146 { NULL, 0 }
147 };
148
149
150 static const struct snmp_mib snmp4_tcp_list[] = {
151 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
152 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
153 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
154 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
155 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
156 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
157 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
158 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
159 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
160 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
161 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
162 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
163 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
164 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
165 SNMP_MIB_SENTINEL
166 };
167
168 static const struct snmp_mib snmp4_udp_list[] = {
169 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
170 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
171 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
172 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
173 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
174 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
175 SNMP_MIB_SENTINEL
176 };
177
178 static const struct snmp_mib snmp4_net_list[] = {
179 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
180 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
181 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
182 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
183 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
184 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
185 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
186 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
187 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
188 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
189 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
190 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
191 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
192 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
193 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
194 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
195 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
196 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
197 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
198 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
199 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
200 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
201 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
202 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
203 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
204 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
205 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
206 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
207 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
208 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
209 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
210 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
211 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
212 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
213 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
214 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
215 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
216 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
217 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
218 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
219 SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
220 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
221 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
222 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
223 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
224 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
225 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
226 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
227 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
228 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
229 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
230 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
231 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
232 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
233 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
234 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
235 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
236 SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
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),
244 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
245 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
246 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
247 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
248 SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND),
249 SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED),
250 SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
251 SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
252 SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
253 SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
254 SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
255 SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
256 SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
257 SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
258 SNMP_MIB_ITEM("TCPReqQFullDoCookies", LINUX_MIB_TCPREQQFULLDOCOOKIES),
259 SNMP_MIB_ITEM("TCPReqQFullDrop", LINUX_MIB_TCPREQQFULLDROP),
260 SNMP_MIB_SENTINEL
261 };
262
263 static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals,
264 unsigned short *type, int count)
265 {
266 int j;
267
268 if (count) {
269 seq_printf(seq, "\nIcmpMsg:");
270 for (j = 0; j < count; ++j)
271 seq_printf(seq, " %sType%u",
272 type[j] & 0x100 ? "Out" : "In",
273 type[j] & 0xff);
274 seq_printf(seq, "\nIcmpMsg:");
275 for (j = 0; j < count; ++j)
276 seq_printf(seq, " %lu", vals[j]);
277 }
278 }
279
280 static void icmpmsg_put(struct seq_file *seq)
281 {
282 #define PERLINE 16
283
284 int i, count;
285 unsigned short type[PERLINE];
286 unsigned long vals[PERLINE], val;
287 struct net *net = seq->private;
288
289 count = 0;
290 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
291 val = snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics, i);
292 if (val) {
293 type[count] = i;
294 vals[count++] = val;
295 }
296 if (count == PERLINE) {
297 icmpmsg_put_line(seq, vals, type, count);
298 count = 0;
299 }
300 }
301 icmpmsg_put_line(seq, vals, type, count);
302
303 #undef PERLINE
304 }
305
306 static void icmp_put(struct seq_file *seq)
307 {
308 int i;
309 struct net *net = seq->private;
310
311 seq_puts(seq, "\nIcmp: InMsgs InErrors");
312 for (i=0; icmpmibmap[i].name != NULL; i++)
313 seq_printf(seq, " In%s", icmpmibmap[i].name);
314 seq_printf(seq, " OutMsgs OutErrors");
315 for (i=0; icmpmibmap[i].name != NULL; i++)
316 seq_printf(seq, " Out%s", icmpmibmap[i].name);
317 seq_printf(seq, "\nIcmp: %lu %lu",
318 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
319 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
320 for (i=0; icmpmibmap[i].name != NULL; i++)
321 seq_printf(seq, " %lu",
322 snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics,
323 icmpmibmap[i].index));
324 seq_printf(seq, " %lu %lu",
325 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
326 snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
327 for (i=0; icmpmibmap[i].name != NULL; i++)
328 seq_printf(seq, " %lu",
329 snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics,
330 icmpmibmap[i].index | 0x100));
331 }
332
333 /*
334 * Called from the PROCfs module. This outputs /proc/net/snmp.
335 */
336 static int snmp_seq_show(struct seq_file *seq, void *v)
337 {
338 int i;
339 struct net *net = seq->private;
340
341 seq_puts(seq, "Ip: Forwarding DefaultTTL");
342
343 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
344 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
345
346 seq_printf(seq, "\nIp: %d %d",
347 IPV4_DEVCONF_ALL(net, FORWARDING) ? 1 : 2,
348 sysctl_ip_default_ttl);
349
350 BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
351 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
352 seq_printf(seq, " %llu",
353 snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
354 snmp4_ipstats_list[i].entry,
355 offsetof(struct ipstats_mib, syncp)));
356
357 icmp_put(seq); /* RFC 2011 compatibility */
358 icmpmsg_put(seq);
359
360 seq_puts(seq, "\nTcp:");
361 for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
362 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
363
364 seq_puts(seq, "\nTcp:");
365 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
366 /* MaxConn field is signed, RFC 2012 */
367 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
368 seq_printf(seq, " %ld",
369 snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
370 snmp4_tcp_list[i].entry));
371 else
372 seq_printf(seq, " %lu",
373 snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
374 snmp4_tcp_list[i].entry));
375 }
376
377 seq_puts(seq, "\nUdp:");
378 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
379 seq_printf(seq, " %s", snmp4_udp_list[i].name);
380
381 seq_puts(seq, "\nUdp:");
382 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
383 seq_printf(seq, " %lu",
384 snmp_fold_field((void __percpu **)net->mib.udp_statistics,
385 snmp4_udp_list[i].entry));
386
387 /* the UDP and UDP-Lite MIBs are the same */
388 seq_puts(seq, "\nUdpLite:");
389 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
390 seq_printf(seq, " %s", snmp4_udp_list[i].name);
391
392 seq_puts(seq, "\nUdpLite:");
393 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
394 seq_printf(seq, " %lu",
395 snmp_fold_field((void __percpu **)net->mib.udplite_statistics,
396 snmp4_udp_list[i].entry));
397
398 seq_putc(seq, '\n');
399 return 0;
400 }
401
402 static int snmp_seq_open(struct inode *inode, struct file *file)
403 {
404 return single_open_net(inode, file, snmp_seq_show);
405 }
406
407 static const struct file_operations snmp_seq_fops = {
408 .owner = THIS_MODULE,
409 .open = snmp_seq_open,
410 .read = seq_read,
411 .llseek = seq_lseek,
412 .release = single_release_net,
413 };
414
415
416
417 /*
418 * Output /proc/net/netstat
419 */
420 static int netstat_seq_show(struct seq_file *seq, void *v)
421 {
422 int i;
423 struct net *net = seq->private;
424
425 seq_puts(seq, "TcpExt:");
426 for (i = 0; snmp4_net_list[i].name != NULL; i++)
427 seq_printf(seq, " %s", snmp4_net_list[i].name);
428
429 seq_puts(seq, "\nTcpExt:");
430 for (i = 0; snmp4_net_list[i].name != NULL; i++)
431 seq_printf(seq, " %lu",
432 snmp_fold_field((void __percpu **)net->mib.net_statistics,
433 snmp4_net_list[i].entry));
434
435 seq_puts(seq, "\nIpExt:");
436 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
437 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
438
439 seq_puts(seq, "\nIpExt:");
440 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
441 seq_printf(seq, " %llu",
442 snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
443 snmp4_ipextstats_list[i].entry,
444 offsetof(struct ipstats_mib, syncp)));
445
446 seq_putc(seq, '\n');
447 return 0;
448 }
449
450 static int netstat_seq_open(struct inode *inode, struct file *file)
451 {
452 return single_open_net(inode, file, netstat_seq_show);
453 }
454
455 static const struct file_operations netstat_seq_fops = {
456 .owner = THIS_MODULE,
457 .open = netstat_seq_open,
458 .read = seq_read,
459 .llseek = seq_lseek,
460 .release = single_release_net,
461 };
462
463 static __net_init int ip_proc_init_net(struct net *net)
464 {
465 if (!proc_net_fops_create(net, "sockstat", S_IRUGO, &sockstat_seq_fops))
466 goto out_sockstat;
467 if (!proc_net_fops_create(net, "netstat", S_IRUGO, &netstat_seq_fops))
468 goto out_netstat;
469 if (!proc_net_fops_create(net, "snmp", S_IRUGO, &snmp_seq_fops))
470 goto out_snmp;
471
472 return 0;
473
474 out_snmp:
475 proc_net_remove(net, "netstat");
476 out_netstat:
477 proc_net_remove(net, "sockstat");
478 out_sockstat:
479 return -ENOMEM;
480 }
481
482 static __net_exit void ip_proc_exit_net(struct net *net)
483 {
484 proc_net_remove(net, "snmp");
485 proc_net_remove(net, "netstat");
486 proc_net_remove(net, "sockstat");
487 }
488
489 static __net_initdata struct pernet_operations ip_proc_ops = {
490 .init = ip_proc_init_net,
491 .exit = ip_proc_exit_net,
492 };
493
494 int __init ip_misc_proc_init(void)
495 {
496 return register_pernet_subsys(&ip_proc_ops);
497 }
498
Linus' kernel tree