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x86: arch/x86/mm/init_32.c cleanup
[wrt350n-kernel.git] / net / ipv4 / proc.c
blobd63474c6b400382f2b102069299f3069226fd3f6
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 * Version: $Id: proc.c,v 1.45 2001/05/16 16:45:35 davem Exp $
11 *
12 * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
13 * Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
14 * Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
15 * Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
16 *
17 * Fixes:
18 * Alan Cox : UDP sockets show the rxqueue/txqueue
19 * using hint flag for the netinfo.
20 * Pauline Middelink : identd support
21 * Alan Cox : Make /proc safer.
22 * Erik Schoenfelder : /proc/net/snmp
23 * Alan Cox : Handle dead sockets properly.
24 * Gerhard Koerting : Show both timers
25 * Alan Cox : Allow inode to be NULL (kernel socket)
26 * Andi Kleen : Add support for open_requests and
27 * split functions for more readibility.
28 * Andi Kleen : Add support for /proc/net/netstat
29 * Arnaldo C. Melo : Convert to seq_file
30 *
31 * This program is free software; you can redistribute it and/or
32 * modify it under the terms of the GNU General Public License
33 * as published by the Free Software Foundation; either version
34 * 2 of the License, or (at your option) any later version.
35 */
36 #include <linux/types.h>
37 #include <net/net_namespace.h>
38 #include <net/icmp.h>
39 #include <net/protocol.h>
40 #include <net/tcp.h>
41 #include <net/udp.h>
42 #include <net/udplite.h>
43 #include <linux/inetdevice.h>
44 #include <linux/proc_fs.h>
45 #include <linux/seq_file.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 socket_seq_show(seq);
55 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
56 sock_prot_inuse_get(&tcp_prot),
57 atomic_read(&tcp_orphan_count),
58 tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
59 atomic_read(&tcp_memory_allocated));
60 seq_printf(seq, "UDP: inuse %d mem %d\n", sock_prot_inuse_get(&udp_prot),
61 atomic_read(&udp_memory_allocated));
62 seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse_get(&udplite_prot));
63 seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse_get(&raw_prot));
64 seq_printf(seq, "FRAG: inuse %d memory %d\n",
65 ip_frag_nqueues(&init_net), ip_frag_mem(&init_net));
66 return 0;
67 }
68
69 static int sockstat_seq_open(struct inode *inode, struct file *file)
70 {
71 return single_open(file, sockstat_seq_show, NULL);
72 }
73
74 static const struct file_operations sockstat_seq_fops = {
75 .owner = THIS_MODULE,
76 .open = sockstat_seq_open,
77 .read = seq_read,
78 .llseek = seq_lseek,
79 .release = single_release,
80 };
81
82 /* snmp items */
83 static const struct snmp_mib snmp4_ipstats_list[] = {
84 SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
85 SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
86 SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
87 SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
88 SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
89 SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
90 SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
91 SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
92 SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
93 SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
94 SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
95 SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
96 SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
97 SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
98 SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
99 SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
100 SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
101 SNMP_MIB_SENTINEL
102 };
103
104 /* Following RFC4293 items are displayed in /proc/net/netstat */
105 static const struct snmp_mib snmp4_ipextstats_list[] = {
106 SNMP_MIB_ITEM("InNoRoutes", IPSTATS_MIB_INNOROUTES),
107 SNMP_MIB_ITEM("InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
108 SNMP_MIB_ITEM("InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
109 SNMP_MIB_ITEM("OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
110 SNMP_MIB_ITEM("InBcastPkts", IPSTATS_MIB_INBCASTPKTS),
111 SNMP_MIB_ITEM("OutBcastPkts", IPSTATS_MIB_OUTBCASTPKTS),
112 SNMP_MIB_SENTINEL
113 };
114
115 static struct {
116 char *name;
117 int index;
118 } icmpmibmap[] = {
119 { "DestUnreachs", ICMP_DEST_UNREACH },
120 { "TimeExcds", ICMP_TIME_EXCEEDED },
121 { "ParmProbs", ICMP_PARAMETERPROB },
122 { "SrcQuenchs", ICMP_SOURCE_QUENCH },
123 { "Redirects", ICMP_REDIRECT },
124 { "Echos", ICMP_ECHO },
125 { "EchoReps", ICMP_ECHOREPLY },
126 { "Timestamps", ICMP_TIMESTAMP },
127 { "TimestampReps", ICMP_TIMESTAMPREPLY },
128 { "AddrMasks", ICMP_ADDRESS },
129 { "AddrMaskReps", ICMP_ADDRESSREPLY },
130 { NULL, 0 }
131 };
132
133
134 static const struct snmp_mib snmp4_tcp_list[] = {
135 SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
136 SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
137 SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
138 SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
139 SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
140 SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
141 SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
142 SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
143 SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
144 SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
145 SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
146 SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
147 SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
148 SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
149 SNMP_MIB_SENTINEL
150 };
151
152 static const struct snmp_mib snmp4_udp_list[] = {
153 SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
154 SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
155 SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
156 SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
157 SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
158 SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
159 SNMP_MIB_SENTINEL
160 };
161
162 static const struct snmp_mib snmp4_net_list[] = {
163 SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
164 SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
165 SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
166 SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
167 SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
168 SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
169 SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
170 SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
171 SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
172 SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
173 SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
174 SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
175 SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
176 SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
177 SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
178 SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
179 SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
180 SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
181 SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
182 SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
183 SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
184 SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
185 SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
186 SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
187 SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
188 SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
189 SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
190 SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
191 SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
192 SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
193 SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
194 SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
195 SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
196 SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
197 SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
198 SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
199 SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
200 SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
201 SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
202 SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
203 SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
204 SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
205 SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
206 SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
207 SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
208 SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
209 SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
210 SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
211 SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
212 SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
213 SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
214 SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
215 SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
216 SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
217 SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
218 SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
219 SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
220 SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
221 SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
222 SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
223 SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
224 SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
225 SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
226 SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
227 SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
228 SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
229 SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
230 SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
231 SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
232 SNMP_MIB_SENTINEL
233 };
234
235 static void icmpmsg_put(struct seq_file *seq)
236 {
237 #define PERLINE 16
238
239 int j, i, count;
240 static int out[PERLINE];
241
242 count = 0;
243 for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
244
245 if (snmp_fold_field((void **) icmpmsg_statistics, i))
246 out[count++] = i;
247 if (count < PERLINE)
248 continue;
249
250 seq_printf(seq, "\nIcmpMsg:");
251 for (j = 0; j < PERLINE; ++j)
252 seq_printf(seq, " %sType%u", i & 0x100 ? "Out" : "In",
253 i & 0xff);
254 seq_printf(seq, "\nIcmpMsg: ");
255 for (j = 0; j < PERLINE; ++j)
256 seq_printf(seq, " %lu",
257 snmp_fold_field((void **) icmpmsg_statistics,
258 out[j]));
259 seq_putc(seq, '\n');
260 }
261 if (count) {
262 seq_printf(seq, "\nIcmpMsg:");
263 for (j = 0; j < count; ++j)
264 seq_printf(seq, " %sType%u", out[j] & 0x100 ? "Out" :
265 "In", out[j] & 0xff);
266 seq_printf(seq, "\nIcmpMsg:");
267 for (j = 0; j < count; ++j)
268 seq_printf(seq, " %lu", snmp_fold_field((void **)
269 icmpmsg_statistics, out[j]));
270 }
271
272 #undef PERLINE
273 }
274
275 static void icmp_put(struct seq_file *seq)
276 {
277 int i;
278
279 seq_puts(seq, "\nIcmp: InMsgs InErrors");
280 for (i=0; icmpmibmap[i].name != NULL; i++)
281 seq_printf(seq, " In%s", icmpmibmap[i].name);
282 seq_printf(seq, " OutMsgs OutErrors");
283 for (i=0; icmpmibmap[i].name != NULL; i++)
284 seq_printf(seq, " Out%s", icmpmibmap[i].name);
285 seq_printf(seq, "\nIcmp: %lu %lu",
286 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INMSGS),
287 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_INERRORS));
288 for (i=0; icmpmibmap[i].name != NULL; i++)
289 seq_printf(seq, " %lu",
290 snmp_fold_field((void **) icmpmsg_statistics,
291 icmpmibmap[i].index));
292 seq_printf(seq, " %lu %lu",
293 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTMSGS),
294 snmp_fold_field((void **) icmp_statistics, ICMP_MIB_OUTERRORS));
295 for (i=0; icmpmibmap[i].name != NULL; i++)
296 seq_printf(seq, " %lu",
297 snmp_fold_field((void **) icmpmsg_statistics,
298 icmpmibmap[i].index | 0x100));
299 }
300
301 /*
302 * Called from the PROCfs module. This outputs /proc/net/snmp.
303 */
304 static int snmp_seq_show(struct seq_file *seq, void *v)
305 {
306 int i;
307
308 seq_puts(seq, "Ip: Forwarding DefaultTTL");
309
310 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
311 seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
312
313 seq_printf(seq, "\nIp: %d %d",
314 IPV4_DEVCONF_ALL(&init_net, FORWARDING) ? 1 : 2,
315 sysctl_ip_default_ttl);
316
317 for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
318 seq_printf(seq, " %lu",
319 snmp_fold_field((void **)ip_statistics,
320 snmp4_ipstats_list[i].entry));
321
322 icmp_put(seq); /* RFC 2011 compatibility */
323 icmpmsg_put(seq);
324
325 seq_puts(seq, "\nTcp:");
326 for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
327 seq_printf(seq, " %s", snmp4_tcp_list[i].name);
328
329 seq_puts(seq, "\nTcp:");
330 for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
331 /* MaxConn field is signed, RFC 2012 */
332 if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
333 seq_printf(seq, " %ld",
334 snmp_fold_field((void **)tcp_statistics,
335 snmp4_tcp_list[i].entry));
336 else
337 seq_printf(seq, " %lu",
338 snmp_fold_field((void **)tcp_statistics,
339 snmp4_tcp_list[i].entry));
340 }
341
342 seq_puts(seq, "\nUdp:");
343 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
344 seq_printf(seq, " %s", snmp4_udp_list[i].name);
345
346 seq_puts(seq, "\nUdp:");
347 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
348 seq_printf(seq, " %lu",
349 snmp_fold_field((void **)udp_statistics,
350 snmp4_udp_list[i].entry));
351
352 /* the UDP and UDP-Lite MIBs are the same */
353 seq_puts(seq, "\nUdpLite:");
354 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
355 seq_printf(seq, " %s", snmp4_udp_list[i].name);
356
357 seq_puts(seq, "\nUdpLite:");
358 for (i = 0; snmp4_udp_list[i].name != NULL; i++)
359 seq_printf(seq, " %lu",
360 snmp_fold_field((void **)udplite_statistics,
361 snmp4_udp_list[i].entry));
362
363 seq_putc(seq, '\n');
364 return 0;
365 }
366
367 static int snmp_seq_open(struct inode *inode, struct file *file)
368 {
369 return single_open(file, snmp_seq_show, NULL);
370 }
371
372 static const struct file_operations snmp_seq_fops = {
373 .owner = THIS_MODULE,
374 .open = snmp_seq_open,
375 .read = seq_read,
376 .llseek = seq_lseek,
377 .release = single_release,
378 };
379
380
381
382 /*
383 * Output /proc/net/netstat
384 */
385 static int netstat_seq_show(struct seq_file *seq, void *v)
386 {
387 int i;
388
389 seq_puts(seq, "TcpExt:");
390 for (i = 0; snmp4_net_list[i].name != NULL; i++)
391 seq_printf(seq, " %s", snmp4_net_list[i].name);
392
393 seq_puts(seq, "\nTcpExt:");
394 for (i = 0; snmp4_net_list[i].name != NULL; i++)
395 seq_printf(seq, " %lu",
396 snmp_fold_field((void **)net_statistics,
397 snmp4_net_list[i].entry));
398
399 seq_puts(seq, "\nIpExt:");
400 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
401 seq_printf(seq, " %s", snmp4_ipextstats_list[i].name);
402
403 seq_puts(seq, "\nIpExt:");
404 for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
405 seq_printf(seq, " %lu",
406 snmp_fold_field((void **)ip_statistics,
407 snmp4_ipextstats_list[i].entry));
408
409 seq_putc(seq, '\n');
410 return 0;
411 }
412
413 static int netstat_seq_open(struct inode *inode, struct file *file)
414 {
415 return single_open(file, netstat_seq_show, NULL);
416 }
417
418 static const struct file_operations netstat_seq_fops = {
419 .owner = THIS_MODULE,
420 .open = netstat_seq_open,
421 .read = seq_read,
422 .llseek = seq_lseek,
423 .release = single_release,
424 };
425
426 int __init ip_misc_proc_init(void)
427 {
428 int rc = 0;
429
430 if (!proc_net_fops_create(&init_net, "netstat", S_IRUGO, &netstat_seq_fops))
431 goto out_netstat;
432
433 if (!proc_net_fops_create(&init_net, "snmp", S_IRUGO, &snmp_seq_fops))
434 goto out_snmp;
435
436 if (!proc_net_fops_create(&init_net, "sockstat", S_IRUGO, &sockstat_seq_fops))
437 goto out_sockstat;
438 out:
439 return rc;
440 out_sockstat:
441 proc_net_remove(&init_net, "snmp");
442 out_snmp:
443 proc_net_remove(&init_net, "netstat");
444 out_netstat:
445 rc = -ENOMEM;
446 goto out;
447 }
448
WRT350N Kernel Patches