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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * This file implements the various access functions for the | |
7 | * PROC file system. It is mainly used for debugging and | |
8 | * statistics. | |
9 | * | |
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/icmp.h> | |
38 | #include <net/protocol.h> | |
39 | #include <net/tcp.h> | |
40 | #include <net/udp.h> | |
14c85021 | 41 | #include <linux/inetdevice.h> |
1da177e4 LT |
42 | #include <linux/proc_fs.h> |
43 | #include <linux/seq_file.h> | |
44 | #include <net/sock.h> | |
45 | #include <net/raw.h> | |
46 | ||
47 | static int fold_prot_inuse(struct proto *proto) | |
48 | { | |
49 | int res = 0; | |
50 | int cpu; | |
51 | ||
6f912042 | 52 | for_each_possible_cpu(cpu) |
1da177e4 LT |
53 | res += proto->stats[cpu].inuse; |
54 | ||
55 | return res; | |
56 | } | |
57 | ||
58 | /* | |
59 | * Report socket allocation statistics [mea@utu.fi] | |
60 | */ | |
61 | static int sockstat_seq_show(struct seq_file *seq, void *v) | |
62 | { | |
1da177e4 LT |
63 | socket_seq_show(seq); |
64 | seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n", | |
65 | fold_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count), | |
295ff7ed | 66 | tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated), |
1da177e4 LT |
67 | atomic_read(&tcp_memory_allocated)); |
68 | seq_printf(seq, "UDP: inuse %d\n", fold_prot_inuse(&udp_prot)); | |
69 | seq_printf(seq, "RAW: inuse %d\n", fold_prot_inuse(&raw_prot)); | |
70 | seq_printf(seq, "FRAG: inuse %d memory %d\n", ip_frag_nqueues, | |
71 | atomic_read(&ip_frag_mem)); | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static int sockstat_seq_open(struct inode *inode, struct file *file) | |
76 | { | |
77 | return single_open(file, sockstat_seq_show, NULL); | |
78 | } | |
79 | ||
80 | static struct file_operations sockstat_seq_fops = { | |
81 | .owner = THIS_MODULE, | |
82 | .open = sockstat_seq_open, | |
83 | .read = seq_read, | |
84 | .llseek = seq_lseek, | |
85 | .release = single_release, | |
86 | }; | |
87 | ||
88 | static unsigned long | |
89 | fold_field(void *mib[], int offt) | |
90 | { | |
91 | unsigned long res = 0; | |
92 | int i; | |
93 | ||
6f912042 | 94 | for_each_possible_cpu(i) { |
1da177e4 LT |
95 | res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt); |
96 | res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt); | |
97 | } | |
98 | return res; | |
99 | } | |
100 | ||
101 | /* snmp items */ | |
9b5b5cff | 102 | static const struct snmp_mib snmp4_ipstats_list[] = { |
1da177e4 LT |
103 | SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES), |
104 | SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS), | |
105 | SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS), | |
106 | SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS), | |
107 | SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS), | |
108 | SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS), | |
109 | SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS), | |
110 | SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS), | |
111 | SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS), | |
112 | SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES), | |
113 | SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT), | |
114 | SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS), | |
115 | SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS), | |
116 | SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS), | |
117 | SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS), | |
118 | SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS), | |
119 | SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES), | |
120 | SNMP_MIB_SENTINEL | |
121 | }; | |
122 | ||
9b5b5cff | 123 | static const struct snmp_mib snmp4_icmp_list[] = { |
1da177e4 LT |
124 | SNMP_MIB_ITEM("InMsgs", ICMP_MIB_INMSGS), |
125 | SNMP_MIB_ITEM("InErrors", ICMP_MIB_INERRORS), | |
126 | SNMP_MIB_ITEM("InDestUnreachs", ICMP_MIB_INDESTUNREACHS), | |
127 | SNMP_MIB_ITEM("InTimeExcds", ICMP_MIB_INTIMEEXCDS), | |
128 | SNMP_MIB_ITEM("InParmProbs", ICMP_MIB_INPARMPROBS), | |
129 | SNMP_MIB_ITEM("InSrcQuenchs", ICMP_MIB_INSRCQUENCHS), | |
130 | SNMP_MIB_ITEM("InRedirects", ICMP_MIB_INREDIRECTS), | |
131 | SNMP_MIB_ITEM("InEchos", ICMP_MIB_INECHOS), | |
132 | SNMP_MIB_ITEM("InEchoReps", ICMP_MIB_INECHOREPS), | |
133 | SNMP_MIB_ITEM("InTimestamps", ICMP_MIB_INTIMESTAMPS), | |
134 | SNMP_MIB_ITEM("InTimestampReps", ICMP_MIB_INTIMESTAMPREPS), | |
135 | SNMP_MIB_ITEM("InAddrMasks", ICMP_MIB_INADDRMASKS), | |
136 | SNMP_MIB_ITEM("InAddrMaskReps", ICMP_MIB_INADDRMASKREPS), | |
137 | SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS), | |
138 | SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS), | |
139 | SNMP_MIB_ITEM("OutDestUnreachs", ICMP_MIB_OUTDESTUNREACHS), | |
140 | SNMP_MIB_ITEM("OutTimeExcds", ICMP_MIB_OUTTIMEEXCDS), | |
141 | SNMP_MIB_ITEM("OutParmProbs", ICMP_MIB_OUTPARMPROBS), | |
142 | SNMP_MIB_ITEM("OutSrcQuenchs", ICMP_MIB_OUTSRCQUENCHS), | |
143 | SNMP_MIB_ITEM("OutRedirects", ICMP_MIB_OUTREDIRECTS), | |
144 | SNMP_MIB_ITEM("OutEchos", ICMP_MIB_OUTECHOS), | |
145 | SNMP_MIB_ITEM("OutEchoReps", ICMP_MIB_OUTECHOREPS), | |
146 | SNMP_MIB_ITEM("OutTimestamps", ICMP_MIB_OUTTIMESTAMPS), | |
147 | SNMP_MIB_ITEM("OutTimestampReps", ICMP_MIB_OUTTIMESTAMPREPS), | |
148 | SNMP_MIB_ITEM("OutAddrMasks", ICMP_MIB_OUTADDRMASKS), | |
149 | SNMP_MIB_ITEM("OutAddrMaskReps", ICMP_MIB_OUTADDRMASKREPS), | |
150 | SNMP_MIB_SENTINEL | |
151 | }; | |
152 | ||
9b5b5cff | 153 | static const struct snmp_mib snmp4_tcp_list[] = { |
1da177e4 LT |
154 | SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM), |
155 | SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN), | |
156 | SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX), | |
157 | SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN), | |
158 | SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS), | |
159 | SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS), | |
160 | SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS), | |
161 | SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS), | |
162 | SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB), | |
163 | SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS), | |
164 | SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS), | |
165 | SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS), | |
166 | SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS), | |
167 | SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS), | |
168 | SNMP_MIB_SENTINEL | |
169 | }; | |
170 | ||
9b5b5cff | 171 | static const struct snmp_mib snmp4_udp_list[] = { |
1da177e4 LT |
172 | SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS), |
173 | SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS), | |
174 | SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS), | |
175 | SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS), | |
176 | SNMP_MIB_SENTINEL | |
177 | }; | |
178 | ||
9b5b5cff | 179 | static const struct snmp_mib snmp4_net_list[] = { |
1da177e4 LT |
180 | SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT), |
181 | SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV), | |
182 | SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED), | |
183 | SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS), | |
184 | SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED), | |
185 | SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED), | |
186 | SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED), | |
187 | SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS), | |
188 | SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS), | |
189 | SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER), | |
190 | SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED), | |
191 | SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED), | |
192 | SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED), | |
193 | SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED), | |
194 | SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED), | |
195 | SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED), | |
196 | SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS), | |
197 | SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED), | |
198 | SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST), | |
199 | SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS), | |
200 | SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS), | |
201 | SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED), | |
202 | SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG), | |
203 | SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE), | |
204 | SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED), | |
205 | SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS), | |
206 | SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER), | |
207 | SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS), | |
208 | SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS), | |
209 | SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY), | |
210 | SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY), | |
211 | SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING), | |
212 | SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER), | |
213 | SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER), | |
214 | SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER), | |
215 | SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER), | |
216 | SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO), | |
217 | SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO), | |
218 | SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO), | |
219 | SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO), | |
220 | SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS), | |
221 | SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT), | |
222 | SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES), | |
223 | SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES), | |
224 | SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES), | |
225 | SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS), | |
226 | SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS), | |
227 | SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS), | |
228 | SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS), | |
229 | SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL), | |
230 | SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL), | |
231 | SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED), | |
232 | SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED), | |
233 | SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT), | |
234 | SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT), | |
235 | SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV), | |
236 | SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV), | |
237 | SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN), | |
238 | SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA), | |
239 | SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE), | |
240 | SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY), | |
241 | SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT), | |
242 | SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER), | |
243 | SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED), | |
244 | SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES), | |
245 | SNMP_MIB_SENTINEL | |
246 | }; | |
247 | ||
248 | /* | |
249 | * Called from the PROCfs module. This outputs /proc/net/snmp. | |
250 | */ | |
251 | static int snmp_seq_show(struct seq_file *seq, void *v) | |
252 | { | |
253 | int i; | |
254 | ||
255 | seq_puts(seq, "Ip: Forwarding DefaultTTL"); | |
256 | ||
257 | for (i = 0; snmp4_ipstats_list[i].name != NULL; i++) | |
258 | seq_printf(seq, " %s", snmp4_ipstats_list[i].name); | |
259 | ||
260 | seq_printf(seq, "\nIp: %d %d", | |
261 | ipv4_devconf.forwarding ? 1 : 2, sysctl_ip_default_ttl); | |
262 | ||
263 | for (i = 0; snmp4_ipstats_list[i].name != NULL; i++) | |
264 | seq_printf(seq, " %lu", | |
265 | fold_field((void **) ip_statistics, | |
266 | snmp4_ipstats_list[i].entry)); | |
267 | ||
268 | seq_puts(seq, "\nIcmp:"); | |
269 | for (i = 0; snmp4_icmp_list[i].name != NULL; i++) | |
270 | seq_printf(seq, " %s", snmp4_icmp_list[i].name); | |
271 | ||
272 | seq_puts(seq, "\nIcmp:"); | |
273 | for (i = 0; snmp4_icmp_list[i].name != NULL; i++) | |
274 | seq_printf(seq, " %lu", | |
275 | fold_field((void **) icmp_statistics, | |
276 | snmp4_icmp_list[i].entry)); | |
277 | ||
278 | seq_puts(seq, "\nTcp:"); | |
279 | for (i = 0; snmp4_tcp_list[i].name != NULL; i++) | |
280 | seq_printf(seq, " %s", snmp4_tcp_list[i].name); | |
281 | ||
282 | seq_puts(seq, "\nTcp:"); | |
283 | for (i = 0; snmp4_tcp_list[i].name != NULL; i++) { | |
284 | /* MaxConn field is signed, RFC 2012 */ | |
285 | if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN) | |
286 | seq_printf(seq, " %ld", | |
287 | fold_field((void **) tcp_statistics, | |
288 | snmp4_tcp_list[i].entry)); | |
289 | else | |
290 | seq_printf(seq, " %lu", | |
291 | fold_field((void **) tcp_statistics, | |
292 | snmp4_tcp_list[i].entry)); | |
293 | } | |
294 | ||
295 | seq_puts(seq, "\nUdp:"); | |
296 | for (i = 0; snmp4_udp_list[i].name != NULL; i++) | |
297 | seq_printf(seq, " %s", snmp4_udp_list[i].name); | |
298 | ||
299 | seq_puts(seq, "\nUdp:"); | |
300 | for (i = 0; snmp4_udp_list[i].name != NULL; i++) | |
301 | seq_printf(seq, " %lu", | |
302 | fold_field((void **) udp_statistics, | |
303 | snmp4_udp_list[i].entry)); | |
304 | ||
305 | seq_putc(seq, '\n'); | |
306 | return 0; | |
307 | } | |
308 | ||
309 | static int snmp_seq_open(struct inode *inode, struct file *file) | |
310 | { | |
311 | return single_open(file, snmp_seq_show, NULL); | |
312 | } | |
313 | ||
314 | static struct file_operations snmp_seq_fops = { | |
315 | .owner = THIS_MODULE, | |
316 | .open = snmp_seq_open, | |
317 | .read = seq_read, | |
318 | .llseek = seq_lseek, | |
319 | .release = single_release, | |
320 | }; | |
321 | ||
322 | /* | |
323 | * Output /proc/net/netstat | |
324 | */ | |
325 | static int netstat_seq_show(struct seq_file *seq, void *v) | |
326 | { | |
327 | int i; | |
328 | ||
329 | seq_puts(seq, "TcpExt:"); | |
330 | for (i = 0; snmp4_net_list[i].name != NULL; i++) | |
331 | seq_printf(seq, " %s", snmp4_net_list[i].name); | |
332 | ||
333 | seq_puts(seq, "\nTcpExt:"); | |
334 | for (i = 0; snmp4_net_list[i].name != NULL; i++) | |
335 | seq_printf(seq, " %lu", | |
336 | fold_field((void **) net_statistics, | |
337 | snmp4_net_list[i].entry)); | |
338 | ||
339 | seq_putc(seq, '\n'); | |
340 | return 0; | |
341 | } | |
342 | ||
343 | static int netstat_seq_open(struct inode *inode, struct file *file) | |
344 | { | |
345 | return single_open(file, netstat_seq_show, NULL); | |
346 | } | |
347 | ||
348 | static struct file_operations netstat_seq_fops = { | |
349 | .owner = THIS_MODULE, | |
350 | .open = netstat_seq_open, | |
351 | .read = seq_read, | |
352 | .llseek = seq_lseek, | |
353 | .release = single_release, | |
354 | }; | |
355 | ||
356 | int __init ip_misc_proc_init(void) | |
357 | { | |
358 | int rc = 0; | |
359 | ||
360 | if (!proc_net_fops_create("netstat", S_IRUGO, &netstat_seq_fops)) | |
361 | goto out_netstat; | |
362 | ||
363 | if (!proc_net_fops_create("snmp", S_IRUGO, &snmp_seq_fops)) | |
364 | goto out_snmp; | |
365 | ||
366 | if (!proc_net_fops_create("sockstat", S_IRUGO, &sockstat_seq_fops)) | |
367 | goto out_sockstat; | |
368 | out: | |
369 | return rc; | |
370 | out_sockstat: | |
371 | proc_net_remove("snmp"); | |
372 | out_snmp: | |
373 | proc_net_remove("netstat"); | |
374 | out_netstat: | |
375 | rc = -ENOMEM; | |
376 | goto out; | |
377 | } | |
378 |