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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 <net/sctp/sctp.h>
41#include <net/ip.h> /* for snmp_fold_field */
42
43static const 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
77};
78
79/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
80static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
81{
82 int i;
83
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 __percpu **)sctp_statistics,
87 sctp_snmp_list[i].entry));
88
89 return 0;
90}
91
92/* Initialize the seq file operations for 'snmp' object. */
93static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
94{
95 return single_open(file, sctp_snmp_seq_show, NULL);
96}
97
98static 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,
104};
105
106/* Set up the proc fs entry for 'snmp' object. */
107int __init sctp_snmp_proc_init(void)
108{
109 struct proc_dir_entry *p;
110
111 p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
112 if (!p)
113 return -ENOMEM;
114
115 return 0;
116}
117
118/* Cleanup the proc fs entry for 'snmp' object. */
119void sctp_snmp_proc_exit(void)
120{
121 remove_proc_entry("snmp", proc_net_sctp);
122}
123
124/* Dump local addresses of an association/endpoint. */
125static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
126{
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;
132
133 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
134 asoc = sctp_assoc(epb);
135 peer = asoc->peer.primary_path;
136 primary = &peer->saddr;
137 }
138
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, "*");
144 }
145 af->seq_dump_addr(seq, addr);
146 }
147}
148
149/* Dump remote addresses of an association. */
150static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
151{
152 struct sctp_transport *transport;
153 union sctp_addr *addr, *primary;
154 struct sctp_af *af;
155
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, "*");
163 }
164 af->seq_dump_addr(seq, addr);
165 }
166}
167
168static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
169{
170 if (*pos >= sctp_ep_hashsize)
171 return NULL;
172
173 if (*pos < 0)
174 *pos = 0;
175
176 if (*pos == 0)
177 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
178
179 return (void *)pos;
180}
181
182static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
183{
184}
185
186
187static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
188{
189 if (++*pos >= sctp_ep_hashsize)
190 return NULL;
191
192 return pos;
193}
194
195
196/* Display sctp endpoints (/proc/net/sctp/eps). */
197static int sctp_eps_seq_show(struct seq_file *seq, void *v)
198{
199 struct sctp_hashbucket *head;
200 struct sctp_ep_common *epb;
201 struct sctp_endpoint *ep;
202 struct sock *sk;
203 struct hlist_node *node;
204 int hash = *(loff_t *)v;
205
206 if (hash >= sctp_ep_hashsize)
207 return -ENOMEM;
208
209 head = &sctp_ep_hashtable[hash];
210 sctp_local_bh_disable();
211 read_lock(&head->lock);
212 sctp_for_each_hentry(epb, node, &head->chain) {
213 ep = sctp_ep(epb);
214 sk = epb->sk;
215 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
216 sctp_sk(sk)->type, sk->sk_state, hash,
217 epb->bind_addr.port,
218 sock_i_uid(sk), sock_i_ino(sk));
219
220 sctp_seq_dump_local_addrs(seq, epb);
221 seq_printf(seq, "\n");
222 }
223 read_unlock(&head->lock);
224 sctp_local_bh_enable();
225
226 return 0;
227}
228
229static const struct seq_operations sctp_eps_ops = {
230 .start = sctp_eps_seq_start,
231 .next = sctp_eps_seq_next,
232 .stop = sctp_eps_seq_stop,
233 .show = sctp_eps_seq_show,
234};
235
236
237/* Initialize the seq file operations for 'eps' object. */
238static int sctp_eps_seq_open(struct inode *inode, struct file *file)
239{
240 return seq_open(file, &sctp_eps_ops);
241}
242
243static const struct file_operations sctp_eps_seq_fops = {
244 .open = sctp_eps_seq_open,
245 .read = seq_read,
246 .llseek = seq_lseek,
247 .release = seq_release,
248};
249
250/* Set up the proc fs entry for 'eps' object. */
251int __init sctp_eps_proc_init(void)
252{
253 struct proc_dir_entry *p;
254
255 p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
256 if (!p)
257 return -ENOMEM;
258
259 return 0;
260}
261
262/* Cleanup the proc fs entry for 'eps' object. */
263void sctp_eps_proc_exit(void)
264{
265 remove_proc_entry("eps", proc_net_sctp);
266}
267
268
269static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
270{
271 if (*pos >= sctp_assoc_hashsize)
272 return NULL;
273
274 if (*pos < 0)
275 *pos = 0;
276
277 if (*pos == 0)
278 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
279 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
280 "RPORT LADDRS <-> RADDRS "
281 "HBINT INS OUTS MAXRT T1X T2X RTXC\n");
282
283 return (void *)pos;
284}
285
286static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
287{
288}
289
290
291static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
292{
293 if (++*pos >= sctp_assoc_hashsize)
294 return NULL;
295
296 return pos;
297}
298
299/* Display sctp associations (/proc/net/sctp/assocs). */
300static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
301{
302 struct sctp_hashbucket *head;
303 struct sctp_ep_common *epb;
304 struct sctp_association *assoc;
305 struct sock *sk;
306 struct hlist_node *node;
307 int hash = *(loff_t *)v;
308
309 if (hash >= sctp_assoc_hashsize)
310 return -ENOMEM;
311
312 head = &sctp_assoc_hashtable[hash];
313 sctp_local_bh_disable();
314 read_lock(&head->lock);
315 sctp_for_each_hentry(epb, node, &head->chain) {
316 assoc = sctp_assoc(epb);
317 sk = epb->sk;
318 seq_printf(seq,
319 "%8pK %8pK %-3d %-3d %-2d %-4d "
320 "%4d %8d %8d %7d %5lu %-5d %5d ",
321 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
322 assoc->state, hash,
323 assoc->assoc_id,
324 assoc->sndbuf_used,
325 atomic_read(&assoc->rmem_alloc),
326 sock_i_uid(sk), sock_i_ino(sk),
327 epb->bind_addr.port,
328 assoc->peer.port);
329 seq_printf(seq, " ");
330 sctp_seq_dump_local_addrs(seq, epb);
331 seq_printf(seq, "<-> ");
332 sctp_seq_dump_remote_addrs(seq, assoc);
333 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
334 assoc->hbinterval, assoc->c.sinit_max_instreams,
335 assoc->c.sinit_num_ostreams, assoc->max_retrans,
336 assoc->init_retries, assoc->shutdown_retries,
337 assoc->rtx_data_chunks);
338 seq_printf(seq, "\n");
339 }
340 read_unlock(&head->lock);
341 sctp_local_bh_enable();
342
343 return 0;
344}
345
346static const struct seq_operations sctp_assoc_ops = {
347 .start = sctp_assocs_seq_start,
348 .next = sctp_assocs_seq_next,
349 .stop = sctp_assocs_seq_stop,
350 .show = sctp_assocs_seq_show,
351};
352
353/* Initialize the seq file operations for 'assocs' object. */
354static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
355{
356 return seq_open(file, &sctp_assoc_ops);
357}
358
359static const struct file_operations sctp_assocs_seq_fops = {
360 .open = sctp_assocs_seq_open,
361 .read = seq_read,
362 .llseek = seq_lseek,
363 .release = seq_release,
364};
365
366/* Set up the proc fs entry for 'assocs' object. */
367int __init sctp_assocs_proc_init(void)
368{
369 struct proc_dir_entry *p;
370
371 p = proc_create("assocs", S_IRUGO, proc_net_sctp,
372 &sctp_assocs_seq_fops);
373 if (!p)
374 return -ENOMEM;
375
376 return 0;
377}
378
379/* Cleanup the proc fs entry for 'assocs' object. */
380void sctp_assocs_proc_exit(void)
381{
382 remove_proc_entry("assocs", proc_net_sctp);
383}
384
385static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
386{
387 if (*pos >= sctp_assoc_hashsize)
388 return NULL;
389
390 if (*pos < 0)
391 *pos = 0;
392
393 if (*pos == 0)
394 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
395 "REM_ADDR_RTX START\n");
396
397 return (void *)pos;
398}
399
400static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
401{
402 if (++*pos >= sctp_assoc_hashsize)
403 return NULL;
404
405 return pos;
406}
407
408static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
409{
410}
411
412static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
413{
414 struct sctp_hashbucket *head;
415 struct sctp_ep_common *epb;
416 struct sctp_association *assoc;
417 struct hlist_node *node;
418 struct sctp_transport *tsp;
419 int hash = *(loff_t *)v;
420
421 if (hash >= sctp_assoc_hashsize)
422 return -ENOMEM;
423
424 head = &sctp_assoc_hashtable[hash];
425 sctp_local_bh_disable();
426 read_lock(&head->lock);
427 sctp_for_each_hentry(epb, node, &head->chain) {
428 assoc = sctp_assoc(epb);
429 list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
430 transports) {
431 /*
432 * The remote address (ADDR)
433 */
434 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
435 seq_printf(seq, " ");
436
437 /*
438 * The association ID (ASSOC_ID)
439 */
440 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
441
442 /*
443 * If the Heartbeat is active (HB_ACT)
444 * Note: 1 = Active, 0 = Inactive
445 */
446 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
447
448 /*
449 * Retransmit time out (RTO)
450 */
451 seq_printf(seq, "%lu ", tsp->rto);
452
453 /*
454 * Maximum path retransmit count (PATH_MAX_RTX)
455 */
456 seq_printf(seq, "%d ", tsp->pathmaxrxt);
457
458 /*
459 * remote address retransmit count (REM_ADDR_RTX)
460 * Note: We don't have a way to tally this at the moment
461 * so lets just leave it as zero for the moment
462 */
463 seq_printf(seq, "0 ");
464
465 /*
466 * remote address start time (START). This is also not
467 * currently implemented, but we can record it with a
468 * jiffies marker in a subsequent patch
469 */
470 seq_printf(seq, "0");
471
472 seq_printf(seq, "\n");
473 }
474 }
475
476 read_unlock(&head->lock);
477 sctp_local_bh_enable();
478
479 return 0;
480
481}
482
483static const struct seq_operations sctp_remaddr_ops = {
484 .start = sctp_remaddr_seq_start,
485 .next = sctp_remaddr_seq_next,
486 .stop = sctp_remaddr_seq_stop,
487 .show = sctp_remaddr_seq_show,
488};
489
490/* Cleanup the proc fs entry for 'remaddr' object. */
491void sctp_remaddr_proc_exit(void)
492{
493 remove_proc_entry("remaddr", proc_net_sctp);
494}
495
496static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
497{
498 return seq_open(file, &sctp_remaddr_ops);
499}
500
501static const struct file_operations sctp_remaddr_seq_fops = {
502 .open = sctp_remaddr_seq_open,
503 .read = seq_read,
504 .llseek = seq_lseek,
505 .release = seq_release,
506};
507
508int __init sctp_remaddr_proc_init(void)
509{
510 struct proc_dir_entry *p;
511
512 p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
513 if (!p)
514 return -ENOMEM;
515 return 0;
516}
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 unsigned long buff[SCTP_MIB_MAX];
77 struct net *net = seq->private;
78 int i;
79
80 memset(buff, 0, sizeof(unsigned long) * SCTP_MIB_MAX);
81
82 snmp_get_cpu_field_batch(buff, sctp_snmp_list,
83 net->sctp.sctp_statistics);
84 for (i = 0; sctp_snmp_list[i].name; i++)
85 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
86 buff[i]);
87
88 return 0;
89}
90
91/* Initialize the seq file operations for 'snmp' object. */
92static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
93{
94 return single_open_net(inode, file, sctp_snmp_seq_show);
95}
96
97static const struct file_operations sctp_snmp_seq_fops = {
98 .open = sctp_snmp_seq_open,
99 .read = seq_read,
100 .llseek = seq_lseek,
101 .release = single_release_net,
102};
103
104/* Dump local addresses of an association/endpoint. */
105static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
106{
107 struct sctp_association *asoc;
108 struct sctp_sockaddr_entry *laddr;
109 struct sctp_transport *peer;
110 union sctp_addr *addr, *primary = NULL;
111 struct sctp_af *af;
112
113 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
114 asoc = sctp_assoc(epb);
115
116 peer = asoc->peer.primary_path;
117 if (unlikely(peer == NULL)) {
118 WARN(1, "Association %p with NULL primary path!\n", asoc);
119 return;
120 }
121
122 primary = &peer->saddr;
123 }
124
125 rcu_read_lock();
126 list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
127 if (!laddr->valid)
128 continue;
129
130 addr = &laddr->a;
131 af = sctp_get_af_specific(addr->sa.sa_family);
132 if (primary && af->cmp_addr(addr, primary)) {
133 seq_printf(seq, "*");
134 }
135 af->seq_dump_addr(seq, addr);
136 }
137 rcu_read_unlock();
138}
139
140/* Dump remote addresses of an association. */
141static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
142{
143 struct sctp_transport *transport;
144 union sctp_addr *addr, *primary;
145 struct sctp_af *af;
146
147 primary = &assoc->peer.primary_addr;
148 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
149 transports) {
150 addr = &transport->ipaddr;
151
152 af = sctp_get_af_specific(addr->sa.sa_family);
153 if (af->cmp_addr(addr, primary)) {
154 seq_printf(seq, "*");
155 }
156 af->seq_dump_addr(seq, addr);
157 }
158}
159
160static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
161{
162 if (*pos >= sctp_ep_hashsize)
163 return NULL;
164
165 if (*pos < 0)
166 *pos = 0;
167
168 if (*pos == 0)
169 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
170
171 return (void *)pos;
172}
173
174static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
175{
176}
177
178
179static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
180{
181 if (++*pos >= sctp_ep_hashsize)
182 return NULL;
183
184 return pos;
185}
186
187
188/* Display sctp endpoints (/proc/net/sctp/eps). */
189static int sctp_eps_seq_show(struct seq_file *seq, void *v)
190{
191 struct sctp_hashbucket *head;
192 struct sctp_ep_common *epb;
193 struct sctp_endpoint *ep;
194 struct sock *sk;
195 int hash = *(loff_t *)v;
196
197 if (hash >= sctp_ep_hashsize)
198 return -ENOMEM;
199
200 head = &sctp_ep_hashtable[hash];
201 read_lock_bh(&head->lock);
202 sctp_for_each_hentry(epb, &head->chain) {
203 ep = sctp_ep(epb);
204 sk = epb->sk;
205 if (!net_eq(sock_net(sk), seq_file_net(seq)))
206 continue;
207 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
208 sctp_sk(sk)->type, sk->sk_state, hash,
209 epb->bind_addr.port,
210 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
211 sock_i_ino(sk));
212
213 sctp_seq_dump_local_addrs(seq, epb);
214 seq_printf(seq, "\n");
215 }
216 read_unlock_bh(&head->lock);
217
218 return 0;
219}
220
221static const struct seq_operations sctp_eps_ops = {
222 .start = sctp_eps_seq_start,
223 .next = sctp_eps_seq_next,
224 .stop = sctp_eps_seq_stop,
225 .show = sctp_eps_seq_show,
226};
227
228
229/* Initialize the seq file operations for 'eps' object. */
230static int sctp_eps_seq_open(struct inode *inode, struct file *file)
231{
232 return seq_open_net(inode, file, &sctp_eps_ops,
233 sizeof(struct seq_net_private));
234}
235
236static const struct file_operations sctp_eps_seq_fops = {
237 .open = sctp_eps_seq_open,
238 .read = seq_read,
239 .llseek = seq_lseek,
240 .release = seq_release_net,
241};
242
243struct sctp_ht_iter {
244 struct seq_net_private p;
245 struct rhashtable_iter hti;
246 int start_fail;
247};
248
249static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos)
250{
251 struct sctp_ht_iter *iter = seq->private;
252
253 sctp_transport_walk_start(&iter->hti);
254
255 iter->start_fail = 0;
256 return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos);
257}
258
259static void sctp_transport_seq_stop(struct seq_file *seq, void *v)
260{
261 struct sctp_ht_iter *iter = seq->private;
262
263 if (iter->start_fail)
264 return;
265 sctp_transport_walk_stop(&iter->hti);
266}
267
268static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos)
269{
270 struct sctp_ht_iter *iter = seq->private;
271
272 ++*pos;
273
274 return sctp_transport_get_next(seq_file_net(seq), &iter->hti);
275}
276
277/* Display sctp associations (/proc/net/sctp/assocs). */
278static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
279{
280 struct sctp_transport *transport;
281 struct sctp_association *assoc;
282 struct sctp_ep_common *epb;
283 struct sock *sk;
284
285 if (v == SEQ_START_TOKEN) {
286 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
287 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
288 "RPORT LADDRS <-> RADDRS "
289 "HBINT INS OUTS MAXRT T1X T2X RTXC "
290 "wmema wmemq sndbuf rcvbuf\n");
291 return 0;
292 }
293
294 transport = (struct sctp_transport *)v;
295 if (!sctp_transport_hold(transport))
296 return 0;
297 assoc = transport->asoc;
298 epb = &assoc->base;
299 sk = epb->sk;
300
301 seq_printf(seq,
302 "%8pK %8pK %-3d %-3d %-2d %-4d "
303 "%4d %8d %8d %7u %5lu %-5d %5d ",
304 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
305 assoc->state, 0,
306 assoc->assoc_id,
307 assoc->sndbuf_used,
308 atomic_read(&assoc->rmem_alloc),
309 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
310 sock_i_ino(sk),
311 epb->bind_addr.port,
312 assoc->peer.port);
313 seq_printf(seq, " ");
314 sctp_seq_dump_local_addrs(seq, epb);
315 seq_printf(seq, "<-> ");
316 sctp_seq_dump_remote_addrs(seq, assoc);
317 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
318 "%8d %8d %8d %8d",
319 assoc->hbinterval, assoc->stream.incnt,
320 assoc->stream.outcnt, assoc->max_retrans,
321 assoc->init_retries, assoc->shutdown_retries,
322 assoc->rtx_data_chunks,
323 refcount_read(&sk->sk_wmem_alloc),
324 sk->sk_wmem_queued,
325 sk->sk_sndbuf,
326 sk->sk_rcvbuf);
327 seq_printf(seq, "\n");
328
329 sctp_transport_put(transport);
330
331 return 0;
332}
333
334static const struct seq_operations sctp_assoc_ops = {
335 .start = sctp_transport_seq_start,
336 .next = sctp_transport_seq_next,
337 .stop = sctp_transport_seq_stop,
338 .show = sctp_assocs_seq_show,
339};
340
341/* Initialize the seq file operations for 'assocs' object. */
342static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
343{
344 return seq_open_net(inode, file, &sctp_assoc_ops,
345 sizeof(struct sctp_ht_iter));
346}
347
348static const struct file_operations sctp_assocs_seq_fops = {
349 .open = sctp_assocs_seq_open,
350 .read = seq_read,
351 .llseek = seq_lseek,
352 .release = seq_release_net,
353};
354
355static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
356{
357 struct sctp_association *assoc;
358 struct sctp_transport *transport, *tsp;
359
360 if (v == SEQ_START_TOKEN) {
361 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
362 "REM_ADDR_RTX START STATE\n");
363 return 0;
364 }
365
366 transport = (struct sctp_transport *)v;
367 if (!sctp_transport_hold(transport))
368 return 0;
369 assoc = transport->asoc;
370
371 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
372 transports) {
373 /*
374 * The remote address (ADDR)
375 */
376 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
377 seq_printf(seq, " ");
378 /*
379 * The association ID (ASSOC_ID)
380 */
381 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
382
383 /*
384 * If the Heartbeat is active (HB_ACT)
385 * Note: 1 = Active, 0 = Inactive
386 */
387 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
388
389 /*
390 * Retransmit time out (RTO)
391 */
392 seq_printf(seq, "%lu ", tsp->rto);
393
394 /*
395 * Maximum path retransmit count (PATH_MAX_RTX)
396 */
397 seq_printf(seq, "%d ", tsp->pathmaxrxt);
398
399 /*
400 * remote address retransmit count (REM_ADDR_RTX)
401 * Note: We don't have a way to tally this at the moment
402 * so lets just leave it as zero for the moment
403 */
404 seq_puts(seq, "0 ");
405
406 /*
407 * remote address start time (START). This is also not
408 * currently implemented, but we can record it with a
409 * jiffies marker in a subsequent patch
410 */
411 seq_puts(seq, "0 ");
412
413 /*
414 * The current state of this destination. I.e.
415 * SCTP_ACTIVE, SCTP_INACTIVE, ...
416 */
417 seq_printf(seq, "%d", tsp->state);
418
419 seq_printf(seq, "\n");
420 }
421
422 sctp_transport_put(transport);
423
424 return 0;
425}
426
427static const struct seq_operations sctp_remaddr_ops = {
428 .start = sctp_transport_seq_start,
429 .next = sctp_transport_seq_next,
430 .stop = sctp_transport_seq_stop,
431 .show = sctp_remaddr_seq_show,
432};
433
434static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
435{
436 return seq_open_net(inode, file, &sctp_remaddr_ops,
437 sizeof(struct sctp_ht_iter));
438}
439
440static const struct file_operations sctp_remaddr_seq_fops = {
441 .open = sctp_remaddr_seq_open,
442 .read = seq_read,
443 .llseek = seq_lseek,
444 .release = seq_release_net,
445};
446
447/* Set up the proc fs entry for the SCTP protocol. */
448int __net_init sctp_proc_init(struct net *net)
449{
450 net->sctp.proc_net_sctp = proc_net_mkdir(net, "sctp", net->proc_net);
451 if (!net->sctp.proc_net_sctp)
452 return -ENOMEM;
453 if (!proc_create("snmp", 0444, net->sctp.proc_net_sctp,
454 &sctp_snmp_seq_fops))
455 goto cleanup;
456 if (!proc_create("eps", 0444, net->sctp.proc_net_sctp,
457 &sctp_eps_seq_fops))
458 goto cleanup;
459 if (!proc_create("assocs", 0444, net->sctp.proc_net_sctp,
460 &sctp_assocs_seq_fops))
461 goto cleanup;
462 if (!proc_create("remaddr", 0444, net->sctp.proc_net_sctp,
463 &sctp_remaddr_seq_fops))
464 goto cleanup;
465 return 0;
466
467cleanup:
468 remove_proc_subtree("sctp", net->proc_net);
469 net->sctp.proc_net_sctp = NULL;
470 return -ENOMEM;
471}