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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>
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
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
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
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
115void sctp_snmp_proc_exit(struct net *net)
116{
117 remove_proc_entry("snmp", net->sctp.proc_net_sctp);
118}
119
120
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
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
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
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
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
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 int start_fail;
284};
285
286static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos)
287{
288 struct sctp_ht_iter *iter = seq->private;
289 int err = sctp_transport_walk_start(&iter->hti);
290
291 if (err) {
292 iter->start_fail = 1;
293 return ERR_PTR(err);
294 }
295
296 iter->start_fail = 0;
297 return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos);
298}
299
300static void sctp_transport_seq_stop(struct seq_file *seq, void *v)
301{
302 struct sctp_ht_iter *iter = seq->private;
303
304 if (iter->start_fail)
305 return;
306 sctp_transport_walk_stop(&iter->hti);
307}
308
309static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos)
310{
311 struct sctp_ht_iter *iter = seq->private;
312
313 ++*pos;
314
315 return sctp_transport_get_next(seq_file_net(seq), &iter->hti);
316}
317
318
319static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
320{
321 struct sctp_transport *transport;
322 struct sctp_association *assoc;
323 struct sctp_ep_common *epb;
324 struct sock *sk;
325
326 if (v == SEQ_START_TOKEN) {
327 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
328 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
329 "RPORT LADDRS <-> RADDRS "
330 "HBINT INS OUTS MAXRT T1X T2X RTXC "
331 "wmema wmemq sndbuf rcvbuf\n");
332 return 0;
333 }
334
335 transport = (struct sctp_transport *)v;
336 if (!sctp_transport_hold(transport))
337 return 0;
338 assoc = transport->asoc;
339 epb = &assoc->base;
340 sk = epb->sk;
341
342 seq_printf(seq,
343 "%8pK %8pK %-3d %-3d %-2d %-4d "
344 "%4d %8d %8d %7u %5lu %-5d %5d ",
345 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
346 assoc->state, 0,
347 assoc->assoc_id,
348 assoc->sndbuf_used,
349 atomic_read(&assoc->rmem_alloc),
350 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
351 sock_i_ino(sk),
352 epb->bind_addr.port,
353 assoc->peer.port);
354 seq_printf(seq, " ");
355 sctp_seq_dump_local_addrs(seq, epb);
356 seq_printf(seq, "<-> ");
357 sctp_seq_dump_remote_addrs(seq, assoc);
358 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
359 "%8d %8d %8d %8d",
360 assoc->hbinterval, assoc->c.sinit_max_instreams,
361 assoc->c.sinit_num_ostreams, assoc->max_retrans,
362 assoc->init_retries, assoc->shutdown_retries,
363 assoc->rtx_data_chunks,
364 atomic_read(&sk->sk_wmem_alloc),
365 sk->sk_wmem_queued,
366 sk->sk_sndbuf,
367 sk->sk_rcvbuf);
368 seq_printf(seq, "\n");
369
370 sctp_transport_put(transport);
371
372 return 0;
373}
374
375static const struct seq_operations sctp_assoc_ops = {
376 .start = sctp_transport_seq_start,
377 .next = sctp_transport_seq_next,
378 .stop = sctp_transport_seq_stop,
379 .show = sctp_assocs_seq_show,
380};
381
382
383static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
384{
385 return seq_open_net(inode, file, &sctp_assoc_ops,
386 sizeof(struct sctp_ht_iter));
387}
388
389static const struct file_operations sctp_assocs_seq_fops = {
390 .open = sctp_assocs_seq_open,
391 .read = seq_read,
392 .llseek = seq_lseek,
393 .release = seq_release_net,
394};
395
396
397int __net_init sctp_assocs_proc_init(struct net *net)
398{
399 struct proc_dir_entry *p;
400
401 p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
402 &sctp_assocs_seq_fops);
403 if (!p)
404 return -ENOMEM;
405
406 return 0;
407}
408
409
410void sctp_assocs_proc_exit(struct net *net)
411{
412 remove_proc_entry("assocs", net->sctp.proc_net_sctp);
413}
414
415static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
416{
417 struct sctp_association *assoc;
418 struct sctp_transport *transport, *tsp;
419
420 if (v == SEQ_START_TOKEN) {
421 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
422 "REM_ADDR_RTX START STATE\n");
423 return 0;
424 }
425
426 transport = (struct sctp_transport *)v;
427 if (!sctp_transport_hold(transport))
428 return 0;
429 assoc = transport->asoc;
430
431 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
432 transports) {
433
434
435
436 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
437 seq_printf(seq, " ");
438
439
440
441 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
442
443
444
445
446
447 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
448
449
450
451
452 seq_printf(seq, "%lu ", tsp->rto);
453
454
455
456
457 seq_printf(seq, "%d ", tsp->pathmaxrxt);
458
459
460
461
462
463
464 seq_puts(seq, "0 ");
465
466
467
468
469
470
471 seq_puts(seq, "0 ");
472
473
474
475
476
477 seq_printf(seq, "%d", tsp->state);
478
479 seq_printf(seq, "\n");
480 }
481
482 sctp_transport_put(transport);
483
484 return 0;
485}
486
487static const struct seq_operations sctp_remaddr_ops = {
488 .start = sctp_transport_seq_start,
489 .next = sctp_transport_seq_next,
490 .stop = sctp_transport_seq_stop,
491 .show = sctp_remaddr_seq_show,
492};
493
494
495void sctp_remaddr_proc_exit(struct net *net)
496{
497 remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
498}
499
500static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
501{
502 return seq_open_net(inode, file, &sctp_remaddr_ops,
503 sizeof(struct sctp_ht_iter));
504}
505
506static const struct file_operations sctp_remaddr_seq_fops = {
507 .open = sctp_remaddr_seq_open,
508 .read = seq_read,
509 .llseek = seq_lseek,
510 .release = seq_release_net,
511};
512
513int __net_init sctp_remaddr_proc_init(struct net *net)
514{
515 struct proc_dir_entry *p;
516
517 p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
518 &sctp_remaddr_seq_fops);
519 if (!p)
520 return -ENOMEM;
521 return 0;
522}
523