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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>
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
81static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
82{
83 struct net *net = seq->private;
84 int i;
85
86 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
87 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
88 snmp_fold_field((void __percpu **)net->sctp.sctp_statistics,
89 sctp_snmp_list[i].entry));
90
91 return 0;
92}
93
94
95static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
96{
97 return single_open_net(inode, file, sctp_snmp_seq_show);
98}
99
100static const struct file_operations sctp_snmp_seq_fops = {
101 .owner = THIS_MODULE,
102 .open = sctp_snmp_seq_open,
103 .read = seq_read,
104 .llseek = seq_lseek,
105 .release = single_release_net,
106};
107
108
109int __net_init sctp_snmp_proc_init(struct net *net)
110{
111 struct proc_dir_entry *p;
112
113 p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
114 &sctp_snmp_seq_fops);
115 if (!p)
116 return -ENOMEM;
117
118 return 0;
119}
120
121
122void sctp_snmp_proc_exit(struct net *net)
123{
124 remove_proc_entry("snmp", net->sctp.proc_net_sctp);
125}
126
127
128static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
129{
130 struct sctp_association *asoc;
131 struct sctp_sockaddr_entry *laddr;
132 struct sctp_transport *peer;
133 union sctp_addr *addr, *primary = NULL;
134 struct sctp_af *af;
135
136 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
137 asoc = sctp_assoc(epb);
138 peer = asoc->peer.primary_path;
139 primary = &peer->saddr;
140 }
141
142 rcu_read_lock();
143 list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
144 if (!laddr->valid)
145 continue;
146
147 addr = &laddr->a;
148 af = sctp_get_af_specific(addr->sa.sa_family);
149 if (primary && af->cmp_addr(addr, primary)) {
150 seq_printf(seq, "*");
151 }
152 af->seq_dump_addr(seq, addr);
153 }
154 rcu_read_unlock();
155}
156
157
158static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
159{
160 struct sctp_transport *transport;
161 union sctp_addr *addr, *primary;
162 struct sctp_af *af;
163
164 primary = &assoc->peer.primary_addr;
165 rcu_read_lock();
166 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
167 transports) {
168 addr = &transport->ipaddr;
169 if (transport->dead)
170 continue;
171
172 af = sctp_get_af_specific(addr->sa.sa_family);
173 if (af->cmp_addr(addr, primary)) {
174 seq_printf(seq, "*");
175 }
176 af->seq_dump_addr(seq, addr);
177 }
178 rcu_read_unlock();
179}
180
181static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
182{
183 if (*pos >= sctp_ep_hashsize)
184 return NULL;
185
186 if (*pos < 0)
187 *pos = 0;
188
189 if (*pos == 0)
190 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
191
192 return (void *)pos;
193}
194
195static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
196{
197}
198
199
200static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
201{
202 if (++*pos >= sctp_ep_hashsize)
203 return NULL;
204
205 return pos;
206}
207
208
209
210static int sctp_eps_seq_show(struct seq_file *seq, void *v)
211{
212 struct sctp_hashbucket *head;
213 struct sctp_ep_common *epb;
214 struct sctp_endpoint *ep;
215 struct sock *sk;
216 int hash = *(loff_t *)v;
217
218 if (hash >= sctp_ep_hashsize)
219 return -ENOMEM;
220
221 head = &sctp_ep_hashtable[hash];
222 sctp_local_bh_disable();
223 read_lock(&head->lock);
224 sctp_for_each_hentry(epb, &head->chain) {
225 ep = sctp_ep(epb);
226 sk = epb->sk;
227 if (!net_eq(sock_net(sk), seq_file_net(seq)))
228 continue;
229 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
230 sctp_sk(sk)->type, sk->sk_state, hash,
231 epb->bind_addr.port,
232 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
233 sock_i_ino(sk));
234
235 sctp_seq_dump_local_addrs(seq, epb);
236 seq_printf(seq, "\n");
237 }
238 read_unlock(&head->lock);
239 sctp_local_bh_enable();
240
241 return 0;
242}
243
244static const struct seq_operations sctp_eps_ops = {
245 .start = sctp_eps_seq_start,
246 .next = sctp_eps_seq_next,
247 .stop = sctp_eps_seq_stop,
248 .show = sctp_eps_seq_show,
249};
250
251
252
253static int sctp_eps_seq_open(struct inode *inode, struct file *file)
254{
255 return seq_open_net(inode, file, &sctp_eps_ops,
256 sizeof(struct seq_net_private));
257}
258
259static const struct file_operations sctp_eps_seq_fops = {
260 .open = sctp_eps_seq_open,
261 .read = seq_read,
262 .llseek = seq_lseek,
263 .release = seq_release_net,
264};
265
266
267int __net_init sctp_eps_proc_init(struct net *net)
268{
269 struct proc_dir_entry *p;
270
271 p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
272 &sctp_eps_seq_fops);
273 if (!p)
274 return -ENOMEM;
275
276 return 0;
277}
278
279
280void sctp_eps_proc_exit(struct net *net)
281{
282 remove_proc_entry("eps", net->sctp.proc_net_sctp);
283}
284
285
286static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
287{
288 if (*pos >= sctp_assoc_hashsize)
289 return NULL;
290
291 if (*pos < 0)
292 *pos = 0;
293
294 if (*pos == 0)
295 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
296 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
297 "RPORT LADDRS <-> RADDRS "
298 "HBINT INS OUTS MAXRT T1X T2X RTXC "
299 "wmema wmemq sndbuf rcvbuf\n");
300
301 return (void *)pos;
302}
303
304static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
305{
306}
307
308
309static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
310{
311 if (++*pos >= sctp_assoc_hashsize)
312 return NULL;
313
314 return pos;
315}
316
317
318static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
319{
320 struct sctp_hashbucket *head;
321 struct sctp_ep_common *epb;
322 struct sctp_association *assoc;
323 struct sock *sk;
324 int hash = *(loff_t *)v;
325
326 if (hash >= sctp_assoc_hashsize)
327 return -ENOMEM;
328
329 head = &sctp_assoc_hashtable[hash];
330 sctp_local_bh_disable();
331 read_lock(&head->lock);
332 sctp_for_each_hentry(epb, &head->chain) {
333 assoc = sctp_assoc(epb);
334 sk = epb->sk;
335 if (!net_eq(sock_net(sk), seq_file_net(seq)))
336 continue;
337 seq_printf(seq,
338 "%8pK %8pK %-3d %-3d %-2d %-4d "
339 "%4d %8d %8d %7d %5lu %-5d %5d ",
340 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
341 assoc->state, hash,
342 assoc->assoc_id,
343 assoc->sndbuf_used,
344 atomic_read(&assoc->rmem_alloc),
345 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
346 sock_i_ino(sk),
347 epb->bind_addr.port,
348 assoc->peer.port);
349 seq_printf(seq, " ");
350 sctp_seq_dump_local_addrs(seq, epb);
351 seq_printf(seq, "<-> ");
352 sctp_seq_dump_remote_addrs(seq, assoc);
353 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
354 "%8d %8d %8d %8d",
355 assoc->hbinterval, assoc->c.sinit_max_instreams,
356 assoc->c.sinit_num_ostreams, assoc->max_retrans,
357 assoc->init_retries, assoc->shutdown_retries,
358 assoc->rtx_data_chunks,
359 atomic_read(&sk->sk_wmem_alloc),
360 sk->sk_wmem_queued,
361 sk->sk_sndbuf,
362 sk->sk_rcvbuf);
363 seq_printf(seq, "\n");
364 }
365 read_unlock(&head->lock);
366 sctp_local_bh_enable();
367
368 return 0;
369}
370
371static const struct seq_operations sctp_assoc_ops = {
372 .start = sctp_assocs_seq_start,
373 .next = sctp_assocs_seq_next,
374 .stop = sctp_assocs_seq_stop,
375 .show = sctp_assocs_seq_show,
376};
377
378
379static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
380{
381 return seq_open_net(inode, file, &sctp_assoc_ops,
382 sizeof(struct seq_net_private));
383}
384
385static const struct file_operations sctp_assocs_seq_fops = {
386 .open = sctp_assocs_seq_open,
387 .read = seq_read,
388 .llseek = seq_lseek,
389 .release = seq_release_net,
390};
391
392
393int __net_init sctp_assocs_proc_init(struct net *net)
394{
395 struct proc_dir_entry *p;
396
397 p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
398 &sctp_assocs_seq_fops);
399 if (!p)
400 return -ENOMEM;
401
402 return 0;
403}
404
405
406void sctp_assocs_proc_exit(struct net *net)
407{
408 remove_proc_entry("assocs", net->sctp.proc_net_sctp);
409}
410
411static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
412{
413 if (*pos >= sctp_assoc_hashsize)
414 return NULL;
415
416 if (*pos < 0)
417 *pos = 0;
418
419 if (*pos == 0)
420 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
421 "REM_ADDR_RTX START\n");
422
423 return (void *)pos;
424}
425
426static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
427{
428 if (++*pos >= sctp_assoc_hashsize)
429 return NULL;
430
431 return pos;
432}
433
434static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
435{
436}
437
438static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
439{
440 struct sctp_hashbucket *head;
441 struct sctp_ep_common *epb;
442 struct sctp_association *assoc;
443 struct sctp_transport *tsp;
444 int hash = *(loff_t *)v;
445
446 if (hash >= sctp_assoc_hashsize)
447 return -ENOMEM;
448
449 head = &sctp_assoc_hashtable[hash];
450 sctp_local_bh_disable();
451 read_lock(&head->lock);
452 rcu_read_lock();
453 sctp_for_each_hentry(epb, &head->chain) {
454 if (!net_eq(sock_net(epb->sk), seq_file_net(seq)))
455 continue;
456 assoc = sctp_assoc(epb);
457 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
458 transports) {
459 if (tsp->dead)
460 continue;
461
462
463
464
465 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
466 seq_printf(seq, " ");
467
468
469
470
471 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
472
473
474
475
476
477 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
478
479
480
481
482 seq_printf(seq, "%lu ", tsp->rto);
483
484
485
486
487 seq_printf(seq, "%d ", tsp->pathmaxrxt);
488
489
490
491
492
493
494 seq_printf(seq, "0 ");
495
496
497
498
499
500
501 seq_printf(seq, "0");
502
503 seq_printf(seq, "\n");
504 }
505 }
506
507 rcu_read_unlock();
508 read_unlock(&head->lock);
509 sctp_local_bh_enable();
510
511 return 0;
512
513}
514
515static const struct seq_operations sctp_remaddr_ops = {
516 .start = sctp_remaddr_seq_start,
517 .next = sctp_remaddr_seq_next,
518 .stop = sctp_remaddr_seq_stop,
519 .show = sctp_remaddr_seq_show,
520};
521
522
523void sctp_remaddr_proc_exit(struct net *net)
524{
525 remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
526}
527
528static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
529{
530 return seq_open_net(inode, file, &sctp_remaddr_ops,
531 sizeof(struct seq_net_private));
532}
533
534static const struct file_operations sctp_remaddr_seq_fops = {
535 .open = sctp_remaddr_seq_open,
536 .read = seq_read,
537 .llseek = seq_lseek,
538 .release = seq_release_net,
539};
540
541int __net_init sctp_remaddr_proc_init(struct net *net)
542{
543 struct proc_dir_entry *p;
544
545 p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
546 &sctp_remaddr_seq_fops);
547 if (!p)
548 return -ENOMEM;
549 return 0;
550}
551