fed up with those stupid warnings
[mmotm.git] / net / sctp / proc.c
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1 /* SCTP kernel implementation
2 * Copyright (c) 2003 International Business Machines, Corp.
4 * This file is part of the SCTP kernel implementation
6 * This SCTP implementation is free software;
7 * you can redistribute it and/or modify it under the terms of
8 * the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
12 * This SCTP implementation is distributed in the hope that it
13 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
14 * ************************
15 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 * See the GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with GNU CC; see the file COPYING. If not, write to
20 * the Free Software Foundation, 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
23 * Please send any bug reports or fixes you make to the
24 * email address(es):
25 * lksctp developers <lksctp-developers@lists.sourceforge.net>
27 * Or submit a bug report through the following website:
28 * http://www.sf.net/projects/lksctp
30 * Written or modified by:
31 * Sridhar Samudrala <sri@us.ibm.com>
33 * Any bugs reported given to us we will try to fix... any fixes shared will
34 * be incorporated into the next SCTP release.
37 #include <linux/types.h>
38 #include <linux/seq_file.h>
39 #include <linux/init.h>
40 #include <net/sctp/sctp.h>
41 #include <net/ip.h> /* for snmp_fold_field */
43 static struct snmp_mib sctp_snmp_list[] = {
44 SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
45 SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
46 SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
47 SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
48 SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
49 SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
50 SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
51 SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
52 SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
53 SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
54 SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
55 SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
56 SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
57 SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
58 SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
59 SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
60 SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
61 SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
62 SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
63 SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
64 SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
65 SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
66 SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
67 SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
68 SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
69 SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
70 SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
71 SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
72 SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
73 SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
74 SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
75 SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
76 SNMP_MIB_SENTINEL
79 /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
80 static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
82 int i;
84 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
85 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
86 snmp_fold_field((void **)sctp_statistics,
87 sctp_snmp_list[i].entry));
89 return 0;
92 /* Initialize the seq file operations for 'snmp' object. */
93 static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
95 return single_open(file, sctp_snmp_seq_show, NULL);
98 static const struct file_operations sctp_snmp_seq_fops = {
99 .owner = THIS_MODULE,
100 .open = sctp_snmp_seq_open,
101 .read = seq_read,
102 .llseek = seq_lseek,
103 .release = single_release,
106 /* Set up the proc fs entry for 'snmp' object. */
107 int __init sctp_snmp_proc_init(void)
109 struct proc_dir_entry *p;
111 p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
112 if (!p)
113 return -ENOMEM;
115 return 0;
118 /* Cleanup the proc fs entry for 'snmp' object. */
119 void sctp_snmp_proc_exit(void)
121 remove_proc_entry("snmp", proc_net_sctp);
124 /* Dump local addresses of an association/endpoint. */
125 static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
127 struct sctp_association *asoc;
128 struct sctp_sockaddr_entry *laddr;
129 struct sctp_transport *peer;
130 union sctp_addr *addr, *primary = NULL;
131 struct sctp_af *af;
133 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
134 asoc = sctp_assoc(epb);
135 peer = asoc->peer.primary_path;
136 primary = &peer->saddr;
139 list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
140 addr = &laddr->a;
141 af = sctp_get_af_specific(addr->sa.sa_family);
142 if (primary && af->cmp_addr(addr, primary)) {
143 seq_printf(seq, "*");
145 af->seq_dump_addr(seq, addr);
149 /* Dump remote addresses of an association. */
150 static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
152 struct sctp_transport *transport;
153 union sctp_addr *addr, *primary;
154 struct sctp_af *af;
156 primary = &assoc->peer.primary_addr;
157 list_for_each_entry(transport, &assoc->peer.transport_addr_list,
158 transports) {
159 addr = &transport->ipaddr;
160 af = sctp_get_af_specific(addr->sa.sa_family);
161 if (af->cmp_addr(addr, primary)) {
162 seq_printf(seq, "*");
164 af->seq_dump_addr(seq, addr);
168 static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
170 if (*pos >= sctp_ep_hashsize)
171 return NULL;
173 if (*pos < 0)
174 *pos = 0;
176 if (*pos == 0)
177 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
179 return (void *)pos;
182 static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
184 return;
188 static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
190 if (++*pos >= sctp_ep_hashsize)
191 return NULL;
193 return pos;
197 /* Display sctp endpoints (/proc/net/sctp/eps). */
198 static int sctp_eps_seq_show(struct seq_file *seq, void *v)
200 struct sctp_hashbucket *head;
201 struct sctp_ep_common *epb;
202 struct sctp_endpoint *ep;
203 struct sock *sk;
204 struct hlist_node *node;
205 int hash = *(loff_t *)v;
207 if (hash >= sctp_ep_hashsize)
208 return -ENOMEM;
210 head = &sctp_ep_hashtable[hash];
211 sctp_local_bh_disable();
212 read_lock(&head->lock);
213 sctp_for_each_hentry(epb, node, &head->chain) {
214 ep = sctp_ep(epb);
215 sk = epb->sk;
216 seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
217 sctp_sk(sk)->type, sk->sk_state, hash,
218 epb->bind_addr.port,
219 sock_i_uid(sk), sock_i_ino(sk));
221 sctp_seq_dump_local_addrs(seq, epb);
222 seq_printf(seq, "\n");
224 read_unlock(&head->lock);
225 sctp_local_bh_enable();
227 return 0;
230 static const struct seq_operations sctp_eps_ops = {
231 .start = sctp_eps_seq_start,
232 .next = sctp_eps_seq_next,
233 .stop = sctp_eps_seq_stop,
234 .show = sctp_eps_seq_show,
238 /* Initialize the seq file operations for 'eps' object. */
239 static int sctp_eps_seq_open(struct inode *inode, struct file *file)
241 return seq_open(file, &sctp_eps_ops);
244 static const struct file_operations sctp_eps_seq_fops = {
245 .open = sctp_eps_seq_open,
246 .read = seq_read,
247 .llseek = seq_lseek,
248 .release = seq_release,
251 /* Set up the proc fs entry for 'eps' object. */
252 int __init sctp_eps_proc_init(void)
254 struct proc_dir_entry *p;
256 p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
257 if (!p)
258 return -ENOMEM;
260 return 0;
263 /* Cleanup the proc fs entry for 'eps' object. */
264 void sctp_eps_proc_exit(void)
266 remove_proc_entry("eps", proc_net_sctp);
270 static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
272 if (*pos >= sctp_assoc_hashsize)
273 return NULL;
275 if (*pos < 0)
276 *pos = 0;
278 if (*pos == 0)
279 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
280 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
281 "RPORT LADDRS <-> RADDRS "
282 "HBINT INS OUTS MAXRT T1X T2X RTXC\n");
284 return (void *)pos;
287 static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
289 return;
293 static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
295 if (++*pos >= sctp_assoc_hashsize)
296 return NULL;
298 return pos;
301 /* Display sctp associations (/proc/net/sctp/assocs). */
302 static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
304 struct sctp_hashbucket *head;
305 struct sctp_ep_common *epb;
306 struct sctp_association *assoc;
307 struct sock *sk;
308 struct hlist_node *node;
309 int hash = *(loff_t *)v;
311 if (hash >= sctp_assoc_hashsize)
312 return -ENOMEM;
314 head = &sctp_assoc_hashtable[hash];
315 sctp_local_bh_disable();
316 read_lock(&head->lock);
317 sctp_for_each_hentry(epb, node, &head->chain) {
318 assoc = sctp_assoc(epb);
319 sk = epb->sk;
320 seq_printf(seq,
321 "%8p %8p %-3d %-3d %-2d %-4d "
322 "%4d %8d %8d %7d %5lu %-5d %5d ",
323 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
324 assoc->state, hash,
325 assoc->assoc_id,
326 assoc->sndbuf_used,
327 atomic_read(&assoc->rmem_alloc),
328 sock_i_uid(sk), sock_i_ino(sk),
329 epb->bind_addr.port,
330 assoc->peer.port);
331 seq_printf(seq, " ");
332 sctp_seq_dump_local_addrs(seq, epb);
333 seq_printf(seq, "<-> ");
334 sctp_seq_dump_remote_addrs(seq, assoc);
335 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
336 assoc->hbinterval, assoc->c.sinit_max_instreams,
337 assoc->c.sinit_num_ostreams, assoc->max_retrans,
338 assoc->init_retries, assoc->shutdown_retries,
339 assoc->rtx_data_chunks);
340 seq_printf(seq, "\n");
342 read_unlock(&head->lock);
343 sctp_local_bh_enable();
345 return 0;
348 static const struct seq_operations sctp_assoc_ops = {
349 .start = sctp_assocs_seq_start,
350 .next = sctp_assocs_seq_next,
351 .stop = sctp_assocs_seq_stop,
352 .show = sctp_assocs_seq_show,
355 /* Initialize the seq file operations for 'assocs' object. */
356 static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
358 return seq_open(file, &sctp_assoc_ops);
361 static const struct file_operations sctp_assocs_seq_fops = {
362 .open = sctp_assocs_seq_open,
363 .read = seq_read,
364 .llseek = seq_lseek,
365 .release = seq_release,
368 /* Set up the proc fs entry for 'assocs' object. */
369 int __init sctp_assocs_proc_init(void)
371 struct proc_dir_entry *p;
373 p = proc_create("assocs", S_IRUGO, proc_net_sctp,
374 &sctp_assocs_seq_fops);
375 if (!p)
376 return -ENOMEM;
378 return 0;
381 /* Cleanup the proc fs entry for 'assocs' object. */
382 void sctp_assocs_proc_exit(void)
384 remove_proc_entry("assocs", proc_net_sctp);
387 static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
389 if (*pos >= sctp_assoc_hashsize)
390 return NULL;
392 if (*pos < 0)
393 *pos = 0;
395 if (*pos == 0)
396 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
397 "REM_ADDR_RTX START\n");
399 return (void *)pos;
402 static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
404 if (++*pos >= sctp_assoc_hashsize)
405 return NULL;
407 return pos;
410 static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
412 return;
415 static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
417 struct sctp_hashbucket *head;
418 struct sctp_ep_common *epb;
419 struct sctp_association *assoc;
420 struct hlist_node *node;
421 struct sctp_transport *tsp;
422 int hash = *(loff_t *)v;
424 if (hash >= sctp_assoc_hashsize)
425 return -ENOMEM;
427 head = &sctp_assoc_hashtable[hash];
428 sctp_local_bh_disable();
429 read_lock(&head->lock);
430 sctp_for_each_hentry(epb, node, &head->chain) {
431 assoc = sctp_assoc(epb);
432 list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
433 transports) {
435 * The remote address (ADDR)
437 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
438 seq_printf(seq, " ");
441 * The association ID (ASSOC_ID)
443 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
446 * If the Heartbeat is active (HB_ACT)
447 * Note: 1 = Active, 0 = Inactive
449 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
452 * Retransmit time out (RTO)
454 seq_printf(seq, "%lu ", tsp->rto);
457 * Maximum path retransmit count (PATH_MAX_RTX)
459 seq_printf(seq, "%d ", tsp->pathmaxrxt);
462 * remote address retransmit count (REM_ADDR_RTX)
463 * Note: We don't have a way to tally this at the moment
464 * so lets just leave it as zero for the moment
466 seq_printf(seq, "0 ");
469 * remote address start time (START). This is also not
470 * currently implemented, but we can record it with a
471 * jiffies marker in a subsequent patch
473 seq_printf(seq, "0");
475 seq_printf(seq, "\n");
479 read_unlock(&head->lock);
480 sctp_local_bh_enable();
482 return 0;
486 static const struct seq_operations sctp_remaddr_ops = {
487 .start = sctp_remaddr_seq_start,
488 .next = sctp_remaddr_seq_next,
489 .stop = sctp_remaddr_seq_stop,
490 .show = sctp_remaddr_seq_show,
493 /* Cleanup the proc fs entry for 'remaddr' object. */
494 void sctp_remaddr_proc_exit(void)
496 remove_proc_entry("remaddr", proc_net_sctp);
499 static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
501 return seq_open(file, &sctp_remaddr_ops);
504 static const struct file_operations sctp_remaddr_seq_fops = {
505 .open = sctp_remaddr_seq_open,
506 .read = seq_read,
507 .llseek = seq_lseek,
508 .release = seq_release,
511 int __init sctp_remaddr_proc_init(void)
513 struct proc_dir_entry *p;
515 p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
516 if (!p)
517 return -ENOMEM;
518 return 0;