xref: /openbmc/linux/net/ipv4/proc.c (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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>
41 #include <net/udplite.h>
42 #include <linux/inetdevice.h>
43 #include <linux/proc_fs.h>
44 #include <linux/seq_file.h>
45 #include <net/sock.h>
46 #include <net/raw.h>
47 
48 static int fold_prot_inuse(struct proto *proto)
49 {
50 	int res = 0;
51 	int cpu;
52 
53 	for_each_possible_cpu(cpu)
54 		res += proto->stats[cpu].inuse;
55 
56 	return res;
57 }
58 
59 /*
60  *	Report socket allocation statistics [mea@utu.fi]
61  */
62 static int sockstat_seq_show(struct seq_file *seq, void *v)
63 {
64 	socket_seq_show(seq);
65 	seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
66 		   fold_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
67 		   tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
68 		   atomic_read(&tcp_memory_allocated));
69 	seq_printf(seq, "UDP: inuse %d\n", fold_prot_inuse(&udp_prot));
70 	seq_printf(seq, "UDPLITE: inuse %d\n", fold_prot_inuse(&udplite_prot));
71 	seq_printf(seq, "RAW: inuse %d\n", fold_prot_inuse(&raw_prot));
72 	seq_printf(seq,  "FRAG: inuse %d memory %d\n", ip_frag_nqueues,
73 		   atomic_read(&ip_frag_mem));
74 	return 0;
75 }
76 
77 static int sockstat_seq_open(struct inode *inode, struct file *file)
78 {
79 	return single_open(file, sockstat_seq_show, NULL);
80 }
81 
82 static const struct file_operations sockstat_seq_fops = {
83 	.owner	 = THIS_MODULE,
84 	.open	 = sockstat_seq_open,
85 	.read	 = seq_read,
86 	.llseek	 = seq_lseek,
87 	.release = single_release,
88 };
89 
90 /* snmp items */
91 static const struct snmp_mib snmp4_ipstats_list[] = {
92 	SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
93 	SNMP_MIB_ITEM("InHdrErrors", IPSTATS_MIB_INHDRERRORS),
94 	SNMP_MIB_ITEM("InAddrErrors", IPSTATS_MIB_INADDRERRORS),
95 	SNMP_MIB_ITEM("ForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
96 	SNMP_MIB_ITEM("InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
97 	SNMP_MIB_ITEM("InDiscards", IPSTATS_MIB_INDISCARDS),
98 	SNMP_MIB_ITEM("InDelivers", IPSTATS_MIB_INDELIVERS),
99 	SNMP_MIB_ITEM("OutRequests", IPSTATS_MIB_OUTREQUESTS),
100 	SNMP_MIB_ITEM("OutDiscards", IPSTATS_MIB_OUTDISCARDS),
101 	SNMP_MIB_ITEM("OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
102 	SNMP_MIB_ITEM("ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
103 	SNMP_MIB_ITEM("ReasmReqds", IPSTATS_MIB_REASMREQDS),
104 	SNMP_MIB_ITEM("ReasmOKs", IPSTATS_MIB_REASMOKS),
105 	SNMP_MIB_ITEM("ReasmFails", IPSTATS_MIB_REASMFAILS),
106 	SNMP_MIB_ITEM("FragOKs", IPSTATS_MIB_FRAGOKS),
107 	SNMP_MIB_ITEM("FragFails", IPSTATS_MIB_FRAGFAILS),
108 	SNMP_MIB_ITEM("FragCreates", IPSTATS_MIB_FRAGCREATES),
109 	SNMP_MIB_SENTINEL
110 };
111 
112 static const struct snmp_mib snmp4_icmp_list[] = {
113 	SNMP_MIB_ITEM("InMsgs", ICMP_MIB_INMSGS),
114 	SNMP_MIB_ITEM("InErrors", ICMP_MIB_INERRORS),
115 	SNMP_MIB_ITEM("InDestUnreachs", ICMP_MIB_INDESTUNREACHS),
116 	SNMP_MIB_ITEM("InTimeExcds", ICMP_MIB_INTIMEEXCDS),
117 	SNMP_MIB_ITEM("InParmProbs", ICMP_MIB_INPARMPROBS),
118 	SNMP_MIB_ITEM("InSrcQuenchs", ICMP_MIB_INSRCQUENCHS),
119 	SNMP_MIB_ITEM("InRedirects", ICMP_MIB_INREDIRECTS),
120 	SNMP_MIB_ITEM("InEchos", ICMP_MIB_INECHOS),
121 	SNMP_MIB_ITEM("InEchoReps", ICMP_MIB_INECHOREPS),
122 	SNMP_MIB_ITEM("InTimestamps", ICMP_MIB_INTIMESTAMPS),
123 	SNMP_MIB_ITEM("InTimestampReps", ICMP_MIB_INTIMESTAMPREPS),
124 	SNMP_MIB_ITEM("InAddrMasks", ICMP_MIB_INADDRMASKS),
125 	SNMP_MIB_ITEM("InAddrMaskReps", ICMP_MIB_INADDRMASKREPS),
126 	SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS),
127 	SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS),
128 	SNMP_MIB_ITEM("OutDestUnreachs", ICMP_MIB_OUTDESTUNREACHS),
129 	SNMP_MIB_ITEM("OutTimeExcds", ICMP_MIB_OUTTIMEEXCDS),
130 	SNMP_MIB_ITEM("OutParmProbs", ICMP_MIB_OUTPARMPROBS),
131 	SNMP_MIB_ITEM("OutSrcQuenchs", ICMP_MIB_OUTSRCQUENCHS),
132 	SNMP_MIB_ITEM("OutRedirects", ICMP_MIB_OUTREDIRECTS),
133 	SNMP_MIB_ITEM("OutEchos", ICMP_MIB_OUTECHOS),
134 	SNMP_MIB_ITEM("OutEchoReps", ICMP_MIB_OUTECHOREPS),
135 	SNMP_MIB_ITEM("OutTimestamps", ICMP_MIB_OUTTIMESTAMPS),
136 	SNMP_MIB_ITEM("OutTimestampReps", ICMP_MIB_OUTTIMESTAMPREPS),
137 	SNMP_MIB_ITEM("OutAddrMasks", ICMP_MIB_OUTADDRMASKS),
138 	SNMP_MIB_ITEM("OutAddrMaskReps", ICMP_MIB_OUTADDRMASKREPS),
139 	SNMP_MIB_SENTINEL
140 };
141 
142 static const struct snmp_mib snmp4_tcp_list[] = {
143 	SNMP_MIB_ITEM("RtoAlgorithm", TCP_MIB_RTOALGORITHM),
144 	SNMP_MIB_ITEM("RtoMin", TCP_MIB_RTOMIN),
145 	SNMP_MIB_ITEM("RtoMax", TCP_MIB_RTOMAX),
146 	SNMP_MIB_ITEM("MaxConn", TCP_MIB_MAXCONN),
147 	SNMP_MIB_ITEM("ActiveOpens", TCP_MIB_ACTIVEOPENS),
148 	SNMP_MIB_ITEM("PassiveOpens", TCP_MIB_PASSIVEOPENS),
149 	SNMP_MIB_ITEM("AttemptFails", TCP_MIB_ATTEMPTFAILS),
150 	SNMP_MIB_ITEM("EstabResets", TCP_MIB_ESTABRESETS),
151 	SNMP_MIB_ITEM("CurrEstab", TCP_MIB_CURRESTAB),
152 	SNMP_MIB_ITEM("InSegs", TCP_MIB_INSEGS),
153 	SNMP_MIB_ITEM("OutSegs", TCP_MIB_OUTSEGS),
154 	SNMP_MIB_ITEM("RetransSegs", TCP_MIB_RETRANSSEGS),
155 	SNMP_MIB_ITEM("InErrs", TCP_MIB_INERRS),
156 	SNMP_MIB_ITEM("OutRsts", TCP_MIB_OUTRSTS),
157 	SNMP_MIB_SENTINEL
158 };
159 
160 static const struct snmp_mib snmp4_udp_list[] = {
161 	SNMP_MIB_ITEM("InDatagrams", UDP_MIB_INDATAGRAMS),
162 	SNMP_MIB_ITEM("NoPorts", UDP_MIB_NOPORTS),
163 	SNMP_MIB_ITEM("InErrors", UDP_MIB_INERRORS),
164 	SNMP_MIB_ITEM("OutDatagrams", UDP_MIB_OUTDATAGRAMS),
165 	SNMP_MIB_ITEM("RcvbufErrors", UDP_MIB_RCVBUFERRORS),
166 	SNMP_MIB_ITEM("SndbufErrors", UDP_MIB_SNDBUFERRORS),
167 	SNMP_MIB_SENTINEL
168 };
169 
170 static const struct snmp_mib snmp4_net_list[] = {
171 	SNMP_MIB_ITEM("SyncookiesSent", LINUX_MIB_SYNCOOKIESSENT),
172 	SNMP_MIB_ITEM("SyncookiesRecv", LINUX_MIB_SYNCOOKIESRECV),
173 	SNMP_MIB_ITEM("SyncookiesFailed", LINUX_MIB_SYNCOOKIESFAILED),
174 	SNMP_MIB_ITEM("EmbryonicRsts", LINUX_MIB_EMBRYONICRSTS),
175 	SNMP_MIB_ITEM("PruneCalled", LINUX_MIB_PRUNECALLED),
176 	SNMP_MIB_ITEM("RcvPruned", LINUX_MIB_RCVPRUNED),
177 	SNMP_MIB_ITEM("OfoPruned", LINUX_MIB_OFOPRUNED),
178 	SNMP_MIB_ITEM("OutOfWindowIcmps", LINUX_MIB_OUTOFWINDOWICMPS),
179 	SNMP_MIB_ITEM("LockDroppedIcmps", LINUX_MIB_LOCKDROPPEDICMPS),
180 	SNMP_MIB_ITEM("ArpFilter", LINUX_MIB_ARPFILTER),
181 	SNMP_MIB_ITEM("TW", LINUX_MIB_TIMEWAITED),
182 	SNMP_MIB_ITEM("TWRecycled", LINUX_MIB_TIMEWAITRECYCLED),
183 	SNMP_MIB_ITEM("TWKilled", LINUX_MIB_TIMEWAITKILLED),
184 	SNMP_MIB_ITEM("PAWSPassive", LINUX_MIB_PAWSPASSIVEREJECTED),
185 	SNMP_MIB_ITEM("PAWSActive", LINUX_MIB_PAWSACTIVEREJECTED),
186 	SNMP_MIB_ITEM("PAWSEstab", LINUX_MIB_PAWSESTABREJECTED),
187 	SNMP_MIB_ITEM("DelayedACKs", LINUX_MIB_DELAYEDACKS),
188 	SNMP_MIB_ITEM("DelayedACKLocked", LINUX_MIB_DELAYEDACKLOCKED),
189 	SNMP_MIB_ITEM("DelayedACKLost", LINUX_MIB_DELAYEDACKLOST),
190 	SNMP_MIB_ITEM("ListenOverflows", LINUX_MIB_LISTENOVERFLOWS),
191 	SNMP_MIB_ITEM("ListenDrops", LINUX_MIB_LISTENDROPS),
192 	SNMP_MIB_ITEM("TCPPrequeued", LINUX_MIB_TCPPREQUEUED),
193 	SNMP_MIB_ITEM("TCPDirectCopyFromBacklog", LINUX_MIB_TCPDIRECTCOPYFROMBACKLOG),
194 	SNMP_MIB_ITEM("TCPDirectCopyFromPrequeue", LINUX_MIB_TCPDIRECTCOPYFROMPREQUEUE),
195 	SNMP_MIB_ITEM("TCPPrequeueDropped", LINUX_MIB_TCPPREQUEUEDROPPED),
196 	SNMP_MIB_ITEM("TCPHPHits", LINUX_MIB_TCPHPHITS),
197 	SNMP_MIB_ITEM("TCPHPHitsToUser", LINUX_MIB_TCPHPHITSTOUSER),
198 	SNMP_MIB_ITEM("TCPPureAcks", LINUX_MIB_TCPPUREACKS),
199 	SNMP_MIB_ITEM("TCPHPAcks", LINUX_MIB_TCPHPACKS),
200 	SNMP_MIB_ITEM("TCPRenoRecovery", LINUX_MIB_TCPRENORECOVERY),
201 	SNMP_MIB_ITEM("TCPSackRecovery", LINUX_MIB_TCPSACKRECOVERY),
202 	SNMP_MIB_ITEM("TCPSACKReneging", LINUX_MIB_TCPSACKRENEGING),
203 	SNMP_MIB_ITEM("TCPFACKReorder", LINUX_MIB_TCPFACKREORDER),
204 	SNMP_MIB_ITEM("TCPSACKReorder", LINUX_MIB_TCPSACKREORDER),
205 	SNMP_MIB_ITEM("TCPRenoReorder", LINUX_MIB_TCPRENOREORDER),
206 	SNMP_MIB_ITEM("TCPTSReorder", LINUX_MIB_TCPTSREORDER),
207 	SNMP_MIB_ITEM("TCPFullUndo", LINUX_MIB_TCPFULLUNDO),
208 	SNMP_MIB_ITEM("TCPPartialUndo", LINUX_MIB_TCPPARTIALUNDO),
209 	SNMP_MIB_ITEM("TCPDSACKUndo", LINUX_MIB_TCPDSACKUNDO),
210 	SNMP_MIB_ITEM("TCPLossUndo", LINUX_MIB_TCPLOSSUNDO),
211 	SNMP_MIB_ITEM("TCPLoss", LINUX_MIB_TCPLOSS),
212 	SNMP_MIB_ITEM("TCPLostRetransmit", LINUX_MIB_TCPLOSTRETRANSMIT),
213 	SNMP_MIB_ITEM("TCPRenoFailures", LINUX_MIB_TCPRENOFAILURES),
214 	SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES),
215 	SNMP_MIB_ITEM("TCPLossFailures", LINUX_MIB_TCPLOSSFAILURES),
216 	SNMP_MIB_ITEM("TCPFastRetrans", LINUX_MIB_TCPFASTRETRANS),
217 	SNMP_MIB_ITEM("TCPForwardRetrans", LINUX_MIB_TCPFORWARDRETRANS),
218 	SNMP_MIB_ITEM("TCPSlowStartRetrans", LINUX_MIB_TCPSLOWSTARTRETRANS),
219 	SNMP_MIB_ITEM("TCPTimeouts", LINUX_MIB_TCPTIMEOUTS),
220 	SNMP_MIB_ITEM("TCPRenoRecoveryFail", LINUX_MIB_TCPRENORECOVERYFAIL),
221 	SNMP_MIB_ITEM("TCPSackRecoveryFail", LINUX_MIB_TCPSACKRECOVERYFAIL),
222 	SNMP_MIB_ITEM("TCPSchedulerFailed", LINUX_MIB_TCPSCHEDULERFAILED),
223 	SNMP_MIB_ITEM("TCPRcvCollapsed", LINUX_MIB_TCPRCVCOLLAPSED),
224 	SNMP_MIB_ITEM("TCPDSACKOldSent", LINUX_MIB_TCPDSACKOLDSENT),
225 	SNMP_MIB_ITEM("TCPDSACKOfoSent", LINUX_MIB_TCPDSACKOFOSENT),
226 	SNMP_MIB_ITEM("TCPDSACKRecv", LINUX_MIB_TCPDSACKRECV),
227 	SNMP_MIB_ITEM("TCPDSACKOfoRecv", LINUX_MIB_TCPDSACKOFORECV),
228 	SNMP_MIB_ITEM("TCPAbortOnSyn", LINUX_MIB_TCPABORTONSYN),
229 	SNMP_MIB_ITEM("TCPAbortOnData", LINUX_MIB_TCPABORTONDATA),
230 	SNMP_MIB_ITEM("TCPAbortOnClose", LINUX_MIB_TCPABORTONCLOSE),
231 	SNMP_MIB_ITEM("TCPAbortOnMemory", LINUX_MIB_TCPABORTONMEMORY),
232 	SNMP_MIB_ITEM("TCPAbortOnTimeout", LINUX_MIB_TCPABORTONTIMEOUT),
233 	SNMP_MIB_ITEM("TCPAbortOnLinger", LINUX_MIB_TCPABORTONLINGER),
234 	SNMP_MIB_ITEM("TCPAbortFailed", LINUX_MIB_TCPABORTFAILED),
235 	SNMP_MIB_ITEM("TCPMemoryPressures", LINUX_MIB_TCPMEMORYPRESSURES),
236 	SNMP_MIB_SENTINEL
237 };
238 
239 /*
240  *	Called from the PROCfs module. This outputs /proc/net/snmp.
241  */
242 static int snmp_seq_show(struct seq_file *seq, void *v)
243 {
244 	int i;
245 
246 	seq_puts(seq, "Ip: Forwarding DefaultTTL");
247 
248 	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
249 		seq_printf(seq, " %s", snmp4_ipstats_list[i].name);
250 
251 	seq_printf(seq, "\nIp: %d %d",
252 			ipv4_devconf.forwarding ? 1 : 2, sysctl_ip_default_ttl);
253 
254 	for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
255 		seq_printf(seq, " %lu",
256 			   snmp_fold_field((void **)ip_statistics,
257 					   snmp4_ipstats_list[i].entry));
258 
259 	seq_puts(seq, "\nIcmp:");
260 	for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
261 		seq_printf(seq, " %s", snmp4_icmp_list[i].name);
262 
263 	seq_puts(seq, "\nIcmp:");
264 	for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
265 		seq_printf(seq, " %lu",
266 			   snmp_fold_field((void **)icmp_statistics,
267 					   snmp4_icmp_list[i].entry));
268 
269 	seq_puts(seq, "\nTcp:");
270 	for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
271 		seq_printf(seq, " %s", snmp4_tcp_list[i].name);
272 
273 	seq_puts(seq, "\nTcp:");
274 	for (i = 0; snmp4_tcp_list[i].name != NULL; i++) {
275 		/* MaxConn field is signed, RFC 2012 */
276 		if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
277 			seq_printf(seq, " %ld",
278 				   snmp_fold_field((void **)tcp_statistics,
279 						   snmp4_tcp_list[i].entry));
280 		else
281 			seq_printf(seq, " %lu",
282 				   snmp_fold_field((void **)tcp_statistics,
283 						   snmp4_tcp_list[i].entry));
284 	}
285 
286 	seq_puts(seq, "\nUdp:");
287 	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
288 		seq_printf(seq, " %s", snmp4_udp_list[i].name);
289 
290 	seq_puts(seq, "\nUdp:");
291 	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
292 		seq_printf(seq, " %lu",
293 			   snmp_fold_field((void **)udp_statistics,
294 					   snmp4_udp_list[i].entry));
295 
296 	/* the UDP and UDP-Lite MIBs are the same */
297 	seq_puts(seq, "\nUdpLite:");
298 	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
299 		seq_printf(seq, " %s", snmp4_udp_list[i].name);
300 
301 	seq_puts(seq, "\nUdpLite:");
302 	for (i = 0; snmp4_udp_list[i].name != NULL; i++)
303 		seq_printf(seq, " %lu",
304 			   snmp_fold_field((void **)udplite_statistics,
305 					   snmp4_udp_list[i].entry));
306 
307 	seq_putc(seq, '\n');
308 	return 0;
309 }
310 
311 static int snmp_seq_open(struct inode *inode, struct file *file)
312 {
313 	return single_open(file, snmp_seq_show, NULL);
314 }
315 
316 static const struct file_operations snmp_seq_fops = {
317 	.owner	 = THIS_MODULE,
318 	.open	 = snmp_seq_open,
319 	.read	 = seq_read,
320 	.llseek	 = seq_lseek,
321 	.release = single_release,
322 };
323 
324 /*
325  *	Output /proc/net/netstat
326  */
327 static int netstat_seq_show(struct seq_file *seq, void *v)
328 {
329 	int i;
330 
331 	seq_puts(seq, "TcpExt:");
332 	for (i = 0; snmp4_net_list[i].name != NULL; i++)
333 		seq_printf(seq, " %s", snmp4_net_list[i].name);
334 
335 	seq_puts(seq, "\nTcpExt:");
336 	for (i = 0; snmp4_net_list[i].name != NULL; i++)
337 		seq_printf(seq, " %lu",
338 			   snmp_fold_field((void **)net_statistics,
339 					   snmp4_net_list[i].entry));
340 
341 	seq_putc(seq, '\n');
342 	return 0;
343 }
344 
345 static int netstat_seq_open(struct inode *inode, struct file *file)
346 {
347 	return single_open(file, netstat_seq_show, NULL);
348 }
349 
350 static const struct file_operations netstat_seq_fops = {
351 	.owner	 = THIS_MODULE,
352 	.open	 = netstat_seq_open,
353 	.read	 = seq_read,
354 	.llseek	 = seq_lseek,
355 	.release = single_release,
356 };
357 
358 int __init ip_misc_proc_init(void)
359 {
360 	int rc = 0;
361 
362 	if (!proc_net_fops_create("netstat", S_IRUGO, &netstat_seq_fops))
363 		goto out_netstat;
364 
365 	if (!proc_net_fops_create("snmp", S_IRUGO, &snmp_seq_fops))
366 		goto out_snmp;
367 
368 	if (!proc_net_fops_create("sockstat", S_IRUGO, &sockstat_seq_fops))
369 		goto out_sockstat;
370 out:
371 	return rc;
372 out_sockstat:
373 	proc_net_remove("snmp");
374 out_snmp:
375 	proc_net_remove("netstat");
376 out_netstat:
377 	rc = -ENOMEM;
378 	goto out;
379 }
380 
381