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1/* SCTP kernel implementation
2 * Copyright (c) 2003 International Business Machines, Corp.
3 *
4 * This file is part of the SCTP kernel implementation
5 *
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.
11 *
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.
17 *
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.
22 *
23 * Please send any bug reports or fixes you make to the
24 * email address(es):
25 * lksctp developers <lksctp-developers@lists.sourceforge.net>
26 *
27 * Or submit a bug report through the following website:
28 * http://www.sf.net/projects/lksctp
29 *
30 * Written or modified by:
31 * Sridhar Samudrala <sri@us.ibm.com>
32 *
33 * Any bugs reported given to us we will try to fix... any fixes shared will
34 * be incorporated into the next SCTP release.
35 */
36
37#include <linux/types.h>
38#include <linux/seq_file.h>
39#include <linux/init.h>
40#include <linux/export.h>
41#include <net/sctp/sctp.h>
42#include <net/ip.h> /* for snmp_fold_field */
43
44static const struct snmp_mib sctp_snmp_list[] = {
45 SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
46 SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
47 SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
48 SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
49 SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
50 SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
51 SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
52 SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
53 SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
54 SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
55 SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
56 SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
57 SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
58 SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
59 SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
60 SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
61 SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
62 SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
63 SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
64 SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
65 SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
66 SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
67 SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
68 SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
69 SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
70 SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
71 SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
72 SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
73 SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
74 SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
75 SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
76 SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
77 SNMP_MIB_SENTINEL
78};
79
80/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
81static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
82{
83 int i;
84
85 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
86 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
87 snmp_fold_field((void __percpu **)sctp_statistics,
88 sctp_snmp_list[i].entry));
89
90 return 0;
91}
92
93/* Initialize the seq file operations for 'snmp' object. */
94static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
95{
96 return single_open(file, sctp_snmp_seq_show, NULL);
97}
98
99static const struct file_operations sctp_snmp_seq_fops = {
100 .owner = THIS_MODULE,
101 .open = sctp_snmp_seq_open,
102 .read = seq_read,
103 .llseek = seq_lseek,
104 .release = single_release,
105};
106
107/* Set up the proc fs entry for 'snmp' object. */
108int __init sctp_snmp_proc_init(void)
109{
110 struct proc_dir_entry *p;
111
112 p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
113 if (!p)
114 return -ENOMEM;
115
116 return 0;
117}
118
119/* Cleanup the proc fs entry for 'snmp' object. */
120void sctp_snmp_proc_exit(void)
121{
122 remove_proc_entry("snmp", proc_net_sctp);
123}
124
125/* Dump local addresses of an association/endpoint. */
126static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
127{
128 struct sctp_association *asoc;
129 struct sctp_sockaddr_entry *laddr;
130 struct sctp_transport *peer;
131 union sctp_addr *addr, *primary = NULL;
132 struct sctp_af *af;
133
134 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
135 asoc = sctp_assoc(epb);
136 peer = asoc->peer.primary_path;
137 primary = &peer->saddr;
138 }
139
140 list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
141 addr = &laddr->a;
142 af = sctp_get_af_specific(addr->sa.sa_family);
143 if (primary && af->cmp_addr(addr, primary)) {
144 seq_printf(seq, "*");
145 }
146 af->seq_dump_addr(seq, addr);
147 }
148}
149
150/* Dump remote addresses of an association. */
151static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
152{
153 struct sctp_transport *transport;
154 union sctp_addr *addr, *primary;
155 struct sctp_af *af;
156
157 primary = &assoc->peer.primary_addr;
158 list_for_each_entry(transport, &assoc->peer.transport_addr_list,
159 transports) {
160 addr = &transport->ipaddr;
161 af = sctp_get_af_specific(addr->sa.sa_family);
162 if (af->cmp_addr(addr, primary)) {
163 seq_printf(seq, "*");
164 }
165 af->seq_dump_addr(seq, addr);
166 }
167}
168
169static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
170{
171 if (*pos >= sctp_ep_hashsize)
172 return NULL;
173
174 if (*pos < 0)
175 *pos = 0;
176
177 if (*pos == 0)
178 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
179
180 return (void *)pos;
181}
182
183static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
184{
185}
186
187
188static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
189{
190 if (++*pos >= sctp_ep_hashsize)
191 return NULL;
192
193 return pos;
194}
195
196
197/* Display sctp endpoints (/proc/net/sctp/eps). */
198static int sctp_eps_seq_show(struct seq_file *seq, void *v)
199{
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;
206
207 if (hash >= sctp_ep_hashsize)
208 return -ENOMEM;
209
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, "%8pK %8pK %-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));
220
221 sctp_seq_dump_local_addrs(seq, epb);
222 seq_printf(seq, "\n");
223 }
224 read_unlock(&head->lock);
225 sctp_local_bh_enable();
226
227 return 0;
228}
229
230static 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,
235};
236
237
238/* Initialize the seq file operations for 'eps' object. */
239static int sctp_eps_seq_open(struct inode *inode, struct file *file)
240{
241 return seq_open(file, &sctp_eps_ops);
242}
243
244static 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,
249};
250
251/* Set up the proc fs entry for 'eps' object. */
252int __init sctp_eps_proc_init(void)
253{
254 struct proc_dir_entry *p;
255
256 p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
257 if (!p)
258 return -ENOMEM;
259
260 return 0;
261}
262
263/* Cleanup the proc fs entry for 'eps' object. */
264void sctp_eps_proc_exit(void)
265{
266 remove_proc_entry("eps", proc_net_sctp);
267}
268
269
270static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
271{
272 if (*pos >= sctp_assoc_hashsize)
273 return NULL;
274
275 if (*pos < 0)
276 *pos = 0;
277
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");
283
284 return (void *)pos;
285}
286
287static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
288{
289}
290
291
292static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
293{
294 if (++*pos >= sctp_assoc_hashsize)
295 return NULL;
296
297 return pos;
298}
299
300/* Display sctp associations (/proc/net/sctp/assocs). */
301static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
302{
303 struct sctp_hashbucket *head;
304 struct sctp_ep_common *epb;
305 struct sctp_association *assoc;
306 struct sock *sk;
307 struct hlist_node *node;
308 int hash = *(loff_t *)v;
309
310 if (hash >= sctp_assoc_hashsize)
311 return -ENOMEM;
312
313 head = &sctp_assoc_hashtable[hash];
314 sctp_local_bh_disable();
315 read_lock(&head->lock);
316 sctp_for_each_hentry(epb, node, &head->chain) {
317 assoc = sctp_assoc(epb);
318 sk = epb->sk;
319 seq_printf(seq,
320 "%8pK %8pK %-3d %-3d %-2d %-4d "
321 "%4d %8d %8d %7d %5lu %-5d %5d ",
322 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
323 assoc->state, hash,
324 assoc->assoc_id,
325 assoc->sndbuf_used,
326 atomic_read(&assoc->rmem_alloc),
327 sock_i_uid(sk), sock_i_ino(sk),
328 epb->bind_addr.port,
329 assoc->peer.port);
330 seq_printf(seq, " ");
331 sctp_seq_dump_local_addrs(seq, epb);
332 seq_printf(seq, "<-> ");
333 sctp_seq_dump_remote_addrs(seq, assoc);
334 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
335 assoc->hbinterval, assoc->c.sinit_max_instreams,
336 assoc->c.sinit_num_ostreams, assoc->max_retrans,
337 assoc->init_retries, assoc->shutdown_retries,
338 assoc->rtx_data_chunks);
339 seq_printf(seq, "\n");
340 }
341 read_unlock(&head->lock);
342 sctp_local_bh_enable();
343
344 return 0;
345}
346
347static const struct seq_operations sctp_assoc_ops = {
348 .start = sctp_assocs_seq_start,
349 .next = sctp_assocs_seq_next,
350 .stop = sctp_assocs_seq_stop,
351 .show = sctp_assocs_seq_show,
352};
353
354/* Initialize the seq file operations for 'assocs' object. */
355static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
356{
357 return seq_open(file, &sctp_assoc_ops);
358}
359
360static const struct file_operations sctp_assocs_seq_fops = {
361 .open = sctp_assocs_seq_open,
362 .read = seq_read,
363 .llseek = seq_lseek,
364 .release = seq_release,
365};
366
367/* Set up the proc fs entry for 'assocs' object. */
368int __init sctp_assocs_proc_init(void)
369{
370 struct proc_dir_entry *p;
371
372 p = proc_create("assocs", S_IRUGO, proc_net_sctp,
373 &sctp_assocs_seq_fops);
374 if (!p)
375 return -ENOMEM;
376
377 return 0;
378}
379
380/* Cleanup the proc fs entry for 'assocs' object. */
381void sctp_assocs_proc_exit(void)
382{
383 remove_proc_entry("assocs", proc_net_sctp);
384}
385
386static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
387{
388 if (*pos >= sctp_assoc_hashsize)
389 return NULL;
390
391 if (*pos < 0)
392 *pos = 0;
393
394 if (*pos == 0)
395 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
396 "REM_ADDR_RTX START\n");
397
398 return (void *)pos;
399}
400
401static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
402{
403 if (++*pos >= sctp_assoc_hashsize)
404 return NULL;
405
406 return pos;
407}
408
409static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
410{
411}
412
413static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
414{
415 struct sctp_hashbucket *head;
416 struct sctp_ep_common *epb;
417 struct sctp_association *assoc;
418 struct hlist_node *node;
419 struct sctp_transport *tsp;
420 int hash = *(loff_t *)v;
421
422 if (hash >= sctp_assoc_hashsize)
423 return -ENOMEM;
424
425 head = &sctp_assoc_hashtable[hash];
426 sctp_local_bh_disable();
427 read_lock(&head->lock);
428 sctp_for_each_hentry(epb, node, &head->chain) {
429 assoc = sctp_assoc(epb);
430 list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
431 transports) {
432 /*
433 * The remote address (ADDR)
434 */
435 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
436 seq_printf(seq, " ");
437
438 /*
439 * The association ID (ASSOC_ID)
440 */
441 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
442
443 /*
444 * If the Heartbeat is active (HB_ACT)
445 * Note: 1 = Active, 0 = Inactive
446 */
447 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
448
449 /*
450 * Retransmit time out (RTO)
451 */
452 seq_printf(seq, "%lu ", tsp->rto);
453
454 /*
455 * Maximum path retransmit count (PATH_MAX_RTX)
456 */
457 seq_printf(seq, "%d ", tsp->pathmaxrxt);
458
459 /*
460 * remote address retransmit count (REM_ADDR_RTX)
461 * Note: We don't have a way to tally this at the moment
462 * so lets just leave it as zero for the moment
463 */
464 seq_printf(seq, "0 ");
465
466 /*
467 * remote address start time (START). This is also not
468 * currently implemented, but we can record it with a
469 * jiffies marker in a subsequent patch
470 */
471 seq_printf(seq, "0");
472
473 seq_printf(seq, "\n");
474 }
475 }
476
477 read_unlock(&head->lock);
478 sctp_local_bh_enable();
479
480 return 0;
481
482}
483
484static const struct seq_operations sctp_remaddr_ops = {
485 .start = sctp_remaddr_seq_start,
486 .next = sctp_remaddr_seq_next,
487 .stop = sctp_remaddr_seq_stop,
488 .show = sctp_remaddr_seq_show,
489};
490
491/* Cleanup the proc fs entry for 'remaddr' object. */
492void sctp_remaddr_proc_exit(void)
493{
494 remove_proc_entry("remaddr", proc_net_sctp);
495}
496
497static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
498{
499 return seq_open(file, &sctp_remaddr_ops);
500}
501
502static const struct file_operations sctp_remaddr_seq_fops = {
503 .open = sctp_remaddr_seq_open,
504 .read = seq_read,
505 .llseek = seq_lseek,
506 .release = seq_release,
507};
508
509int __init sctp_remaddr_proc_init(void)
510{
511 struct proc_dir_entry *p;
512
513 p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
514 if (!p)
515 return -ENOMEM;
516 return 0;
517}
1/* SCTP kernel implementation
2 * Copyright (c) 2003 International Business Machines, Corp.
3 *
4 * This file is part of the SCTP kernel implementation
5 *
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.
11 *
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.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with GNU CC; see the file COPYING. If not, see
20 * <http://www.gnu.org/licenses/>.
21 *
22 * Please send any bug reports or fixes you make to the
23 * email address(es):
24 * lksctp developers <linux-sctp@vger.kernel.org>
25 *
26 * Written or modified by:
27 * Sridhar Samudrala <sri@us.ibm.com>
28 */
29
30#include <linux/types.h>
31#include <linux/seq_file.h>
32#include <linux/init.h>
33#include <linux/export.h>
34#include <net/sctp/sctp.h>
35#include <net/ip.h> /* for snmp_fold_field */
36
37static const struct snmp_mib sctp_snmp_list[] = {
38 SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
39 SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
40 SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
41 SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
42 SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
43 SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
44 SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
45 SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
46 SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
47 SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
48 SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
49 SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
50 SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
51 SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
52 SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
53 SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
54 SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
55 SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
56 SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
57 SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
58 SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
59 SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
60 SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
61 SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
62 SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
63 SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
64 SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
65 SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
66 SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
67 SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
68 SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
69 SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
70 SNMP_MIB_SENTINEL
71};
72
73/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
74static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
75{
76 struct net *net = seq->private;
77 int i;
78
79 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
80 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
81 snmp_fold_field(net->sctp.sctp_statistics,
82 sctp_snmp_list[i].entry));
83
84 return 0;
85}
86
87/* Initialize the seq file operations for 'snmp' object. */
88static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
89{
90 return single_open_net(inode, file, sctp_snmp_seq_show);
91}
92
93static const struct file_operations sctp_snmp_seq_fops = {
94 .owner = THIS_MODULE,
95 .open = sctp_snmp_seq_open,
96 .read = seq_read,
97 .llseek = seq_lseek,
98 .release = single_release_net,
99};
100
101/* Set up the proc fs entry for 'snmp' object. */
102int __net_init sctp_snmp_proc_init(struct net *net)
103{
104 struct proc_dir_entry *p;
105
106 p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
107 &sctp_snmp_seq_fops);
108 if (!p)
109 return -ENOMEM;
110
111 return 0;
112}
113
114/* Cleanup the proc fs entry for 'snmp' object. */
115void sctp_snmp_proc_exit(struct net *net)
116{
117 remove_proc_entry("snmp", net->sctp.proc_net_sctp);
118}
119
120/* Dump local addresses of an association/endpoint. */
121static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
122{
123 struct sctp_association *asoc;
124 struct sctp_sockaddr_entry *laddr;
125 struct sctp_transport *peer;
126 union sctp_addr *addr, *primary = NULL;
127 struct sctp_af *af;
128
129 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
130 asoc = sctp_assoc(epb);
131
132 peer = asoc->peer.primary_path;
133 if (unlikely(peer == NULL)) {
134 WARN(1, "Association %p with NULL primary path!\n", asoc);
135 return;
136 }
137
138 primary = &peer->saddr;
139 }
140
141 rcu_read_lock();
142 list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
143 if (!laddr->valid)
144 continue;
145
146 addr = &laddr->a;
147 af = sctp_get_af_specific(addr->sa.sa_family);
148 if (primary && af->cmp_addr(addr, primary)) {
149 seq_printf(seq, "*");
150 }
151 af->seq_dump_addr(seq, addr);
152 }
153 rcu_read_unlock();
154}
155
156/* Dump remote addresses of an association. */
157static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
158{
159 struct sctp_transport *transport;
160 union sctp_addr *addr, *primary;
161 struct sctp_af *af;
162
163 primary = &assoc->peer.primary_addr;
164 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
165 transports) {
166 addr = &transport->ipaddr;
167
168 af = sctp_get_af_specific(addr->sa.sa_family);
169 if (af->cmp_addr(addr, primary)) {
170 seq_printf(seq, "*");
171 }
172 af->seq_dump_addr(seq, addr);
173 }
174}
175
176static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
177{
178 if (*pos >= sctp_ep_hashsize)
179 return NULL;
180
181 if (*pos < 0)
182 *pos = 0;
183
184 if (*pos == 0)
185 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
186
187 return (void *)pos;
188}
189
190static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
191{
192}
193
194
195static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
196{
197 if (++*pos >= sctp_ep_hashsize)
198 return NULL;
199
200 return pos;
201}
202
203
204/* Display sctp endpoints (/proc/net/sctp/eps). */
205static int sctp_eps_seq_show(struct seq_file *seq, void *v)
206{
207 struct sctp_hashbucket *head;
208 struct sctp_ep_common *epb;
209 struct sctp_endpoint *ep;
210 struct sock *sk;
211 int hash = *(loff_t *)v;
212
213 if (hash >= sctp_ep_hashsize)
214 return -ENOMEM;
215
216 head = &sctp_ep_hashtable[hash];
217 local_bh_disable();
218 read_lock(&head->lock);
219 sctp_for_each_hentry(epb, &head->chain) {
220 ep = sctp_ep(epb);
221 sk = epb->sk;
222 if (!net_eq(sock_net(sk), seq_file_net(seq)))
223 continue;
224 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
225 sctp_sk(sk)->type, sk->sk_state, hash,
226 epb->bind_addr.port,
227 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
228 sock_i_ino(sk));
229
230 sctp_seq_dump_local_addrs(seq, epb);
231 seq_printf(seq, "\n");
232 }
233 read_unlock(&head->lock);
234 local_bh_enable();
235
236 return 0;
237}
238
239static const struct seq_operations sctp_eps_ops = {
240 .start = sctp_eps_seq_start,
241 .next = sctp_eps_seq_next,
242 .stop = sctp_eps_seq_stop,
243 .show = sctp_eps_seq_show,
244};
245
246
247/* Initialize the seq file operations for 'eps' object. */
248static int sctp_eps_seq_open(struct inode *inode, struct file *file)
249{
250 return seq_open_net(inode, file, &sctp_eps_ops,
251 sizeof(struct seq_net_private));
252}
253
254static const struct file_operations sctp_eps_seq_fops = {
255 .open = sctp_eps_seq_open,
256 .read = seq_read,
257 .llseek = seq_lseek,
258 .release = seq_release_net,
259};
260
261/* Set up the proc fs entry for 'eps' object. */
262int __net_init sctp_eps_proc_init(struct net *net)
263{
264 struct proc_dir_entry *p;
265
266 p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
267 &sctp_eps_seq_fops);
268 if (!p)
269 return -ENOMEM;
270
271 return 0;
272}
273
274/* Cleanup the proc fs entry for 'eps' object. */
275void sctp_eps_proc_exit(struct net *net)
276{
277 remove_proc_entry("eps", net->sctp.proc_net_sctp);
278}
279
280struct sctp_ht_iter {
281 struct seq_net_private p;
282 struct rhashtable_iter hti;
283};
284
285static struct sctp_transport *sctp_transport_get_next(struct seq_file *seq)
286{
287 struct sctp_ht_iter *iter = seq->private;
288 struct sctp_transport *t;
289
290 t = rhashtable_walk_next(&iter->hti);
291 for (; t; t = rhashtable_walk_next(&iter->hti)) {
292 if (IS_ERR(t)) {
293 if (PTR_ERR(t) == -EAGAIN)
294 continue;
295 break;
296 }
297
298 if (net_eq(sock_net(t->asoc->base.sk), seq_file_net(seq)) &&
299 t->asoc->peer.primary_path == t)
300 break;
301 }
302
303 return t;
304}
305
306static struct sctp_transport *sctp_transport_get_idx(struct seq_file *seq,
307 loff_t pos)
308{
309 void *obj = SEQ_START_TOKEN;
310
311 while (pos && (obj = sctp_transport_get_next(seq)) && !IS_ERR(obj))
312 pos--;
313
314 return obj;
315}
316
317static int sctp_transport_walk_start(struct seq_file *seq)
318{
319 struct sctp_ht_iter *iter = seq->private;
320 int err;
321
322 err = rhashtable_walk_init(&sctp_transport_hashtable, &iter->hti);
323 if (err)
324 return err;
325
326 err = rhashtable_walk_start(&iter->hti);
327
328 return err == -EAGAIN ? 0 : err;
329}
330
331static void sctp_transport_walk_stop(struct seq_file *seq)
332{
333 struct sctp_ht_iter *iter = seq->private;
334
335 rhashtable_walk_stop(&iter->hti);
336 rhashtable_walk_exit(&iter->hti);
337}
338
339static void *sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
340{
341 int err = sctp_transport_walk_start(seq);
342
343 if (err)
344 return ERR_PTR(err);
345
346 return sctp_transport_get_idx(seq, *pos);
347}
348
349static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
350{
351 sctp_transport_walk_stop(seq);
352}
353
354static void *sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
355{
356 ++*pos;
357
358 return sctp_transport_get_next(seq);
359}
360
361/* Display sctp associations (/proc/net/sctp/assocs). */
362static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
363{
364 struct sctp_transport *transport;
365 struct sctp_association *assoc;
366 struct sctp_ep_common *epb;
367 struct sock *sk;
368
369 if (v == SEQ_START_TOKEN) {
370 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
371 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
372 "RPORT LADDRS <-> RADDRS "
373 "HBINT INS OUTS MAXRT T1X T2X RTXC "
374 "wmema wmemq sndbuf rcvbuf\n");
375 return 0;
376 }
377
378 transport = (struct sctp_transport *)v;
379 if (!sctp_transport_hold(transport))
380 return 0;
381 assoc = transport->asoc;
382 epb = &assoc->base;
383 sk = epb->sk;
384
385 seq_printf(seq,
386 "%8pK %8pK %-3d %-3d %-2d %-4d "
387 "%4d %8d %8d %7u %5lu %-5d %5d ",
388 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
389 assoc->state, 0,
390 assoc->assoc_id,
391 assoc->sndbuf_used,
392 atomic_read(&assoc->rmem_alloc),
393 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
394 sock_i_ino(sk),
395 epb->bind_addr.port,
396 assoc->peer.port);
397 seq_printf(seq, " ");
398 sctp_seq_dump_local_addrs(seq, epb);
399 seq_printf(seq, "<-> ");
400 sctp_seq_dump_remote_addrs(seq, assoc);
401 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
402 "%8d %8d %8d %8d",
403 assoc->hbinterval, assoc->c.sinit_max_instreams,
404 assoc->c.sinit_num_ostreams, assoc->max_retrans,
405 assoc->init_retries, assoc->shutdown_retries,
406 assoc->rtx_data_chunks,
407 atomic_read(&sk->sk_wmem_alloc),
408 sk->sk_wmem_queued,
409 sk->sk_sndbuf,
410 sk->sk_rcvbuf);
411 seq_printf(seq, "\n");
412
413 sctp_transport_put(transport);
414
415 return 0;
416}
417
418static const struct seq_operations sctp_assoc_ops = {
419 .start = sctp_assocs_seq_start,
420 .next = sctp_assocs_seq_next,
421 .stop = sctp_assocs_seq_stop,
422 .show = sctp_assocs_seq_show,
423};
424
425/* Initialize the seq file operations for 'assocs' object. */
426static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
427{
428 return seq_open_net(inode, file, &sctp_assoc_ops,
429 sizeof(struct sctp_ht_iter));
430}
431
432static const struct file_operations sctp_assocs_seq_fops = {
433 .open = sctp_assocs_seq_open,
434 .read = seq_read,
435 .llseek = seq_lseek,
436 .release = seq_release_net,
437};
438
439/* Set up the proc fs entry for 'assocs' object. */
440int __net_init sctp_assocs_proc_init(struct net *net)
441{
442 struct proc_dir_entry *p;
443
444 p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
445 &sctp_assocs_seq_fops);
446 if (!p)
447 return -ENOMEM;
448
449 return 0;
450}
451
452/* Cleanup the proc fs entry for 'assocs' object. */
453void sctp_assocs_proc_exit(struct net *net)
454{
455 remove_proc_entry("assocs", net->sctp.proc_net_sctp);
456}
457
458static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
459{
460 int err = sctp_transport_walk_start(seq);
461
462 if (err)
463 return ERR_PTR(err);
464
465 return sctp_transport_get_idx(seq, *pos);
466}
467
468static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
469{
470 ++*pos;
471
472 return sctp_transport_get_next(seq);
473}
474
475static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
476{
477 sctp_transport_walk_stop(seq);
478}
479
480static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
481{
482 struct sctp_association *assoc;
483 struct sctp_transport *transport, *tsp;
484
485 if (v == SEQ_START_TOKEN) {
486 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
487 "REM_ADDR_RTX START STATE\n");
488 return 0;
489 }
490
491 transport = (struct sctp_transport *)v;
492 if (!sctp_transport_hold(transport))
493 return 0;
494 assoc = transport->asoc;
495
496 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
497 transports) {
498 /*
499 * The remote address (ADDR)
500 */
501 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
502 seq_printf(seq, " ");
503 /*
504 * The association ID (ASSOC_ID)
505 */
506 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
507
508 /*
509 * If the Heartbeat is active (HB_ACT)
510 * Note: 1 = Active, 0 = Inactive
511 */
512 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
513
514 /*
515 * Retransmit time out (RTO)
516 */
517 seq_printf(seq, "%lu ", tsp->rto);
518
519 /*
520 * Maximum path retransmit count (PATH_MAX_RTX)
521 */
522 seq_printf(seq, "%d ", tsp->pathmaxrxt);
523
524 /*
525 * remote address retransmit count (REM_ADDR_RTX)
526 * Note: We don't have a way to tally this at the moment
527 * so lets just leave it as zero for the moment
528 */
529 seq_puts(seq, "0 ");
530
531 /*
532 * remote address start time (START). This is also not
533 * currently implemented, but we can record it with a
534 * jiffies marker in a subsequent patch
535 */
536 seq_puts(seq, "0 ");
537
538 /*
539 * The current state of this destination. I.e.
540 * SCTP_ACTIVE, SCTP_INACTIVE, ...
541 */
542 seq_printf(seq, "%d", tsp->state);
543
544 seq_printf(seq, "\n");
545 }
546
547 sctp_transport_put(transport);
548
549 return 0;
550}
551
552static const struct seq_operations sctp_remaddr_ops = {
553 .start = sctp_remaddr_seq_start,
554 .next = sctp_remaddr_seq_next,
555 .stop = sctp_remaddr_seq_stop,
556 .show = sctp_remaddr_seq_show,
557};
558
559/* Cleanup the proc fs entry for 'remaddr' object. */
560void sctp_remaddr_proc_exit(struct net *net)
561{
562 remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
563}
564
565static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
566{
567 return seq_open_net(inode, file, &sctp_remaddr_ops,
568 sizeof(struct sctp_ht_iter));
569}
570
571static const struct file_operations sctp_remaddr_seq_fops = {
572 .open = sctp_remaddr_seq_open,
573 .read = seq_read,
574 .llseek = seq_lseek,
575 .release = seq_release_net,
576};
577
578int __net_init sctp_remaddr_proc_init(struct net *net)
579{
580 struct proc_dir_entry *p;
581
582 p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
583 &sctp_remaddr_seq_fops);
584 if (!p)
585 return -ENOMEM;
586 return 0;
587}