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60c778b2 | 1 | /* SCTP kernel implementation |
1da177e4 LT |
2 | * Copyright (c) 2003 International Business Machines, Corp. |
3 | * | |
60c778b2 | 4 | * This file is part of the SCTP kernel implementation |
1da177e4 | 5 | * |
60c778b2 | 6 | * This SCTP implementation is free software; |
1da177e4 LT |
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 | * | |
60c778b2 | 12 | * This SCTP implementation is distributed in the hope that it |
1da177e4 LT |
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 | |
4b2f13a2 JK |
19 | * along with GNU CC; see the file COPYING. If not, see |
20 | * <http://www.gnu.org/licenses/>. | |
1da177e4 LT |
21 | * |
22 | * Please send any bug reports or fixes you make to the | |
23 | * email address(es): | |
91705c61 | 24 | * lksctp developers <linux-sctp@vger.kernel.org> |
1da177e4 | 25 | * |
1da177e4 LT |
26 | * Written or modified by: |
27 | * Sridhar Samudrala <sri@us.ibm.com> | |
1da177e4 LT |
28 | */ |
29 | ||
30 | #include <linux/types.h> | |
31 | #include <linux/seq_file.h> | |
32 | #include <linux/init.h> | |
bc3b2d7f | 33 | #include <linux/export.h> |
1da177e4 | 34 | #include <net/sctp/sctp.h> |
3f5340a6 | 35 | #include <net/ip.h> /* for snmp_fold_field */ |
1da177e4 | 36 | |
5833929c | 37 | static const struct snmp_mib sctp_snmp_list[] = { |
1da177e4 LT |
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), | |
ac0b0462 SS |
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), | |
d2287f84 | 70 | SNMP_MIB_SENTINEL |
1da177e4 LT |
71 | }; |
72 | ||
1da177e4 LT |
73 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ |
74 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) | |
75 | { | |
13d782f6 | 76 | struct net *net = seq->private; |
1da177e4 LT |
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, | |
c9f2dba6 | 81 | snmp_fold_field(net->sctp.sctp_statistics, |
1da177e4 LT |
82 | sctp_snmp_list[i].entry)); |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | /* Initialize the seq file operations for 'snmp' object. */ | |
88 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
89 | { | |
13d782f6 | 90 | return single_open_net(inode, file, sctp_snmp_seq_show); |
1da177e4 LT |
91 | } |
92 | ||
da7071d7 | 93 | static const struct file_operations sctp_snmp_seq_fops = { |
1da177e4 LT |
94 | .owner = THIS_MODULE, |
95 | .open = sctp_snmp_seq_open, | |
96 | .read = seq_read, | |
97 | .llseek = seq_lseek, | |
0da9a0c2 | 98 | .release = single_release_net, |
1da177e4 LT |
99 | }; |
100 | ||
101 | /* Set up the proc fs entry for 'snmp' object. */ | |
13d782f6 | 102 | int __net_init sctp_snmp_proc_init(struct net *net) |
1da177e4 LT |
103 | { |
104 | struct proc_dir_entry *p; | |
105 | ||
13d782f6 EB |
106 | p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp, |
107 | &sctp_snmp_seq_fops); | |
1da177e4 LT |
108 | if (!p) |
109 | return -ENOMEM; | |
110 | ||
1da177e4 LT |
111 | return 0; |
112 | } | |
113 | ||
114 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
13d782f6 | 115 | void sctp_snmp_proc_exit(struct net *net) |
1da177e4 | 116 | { |
13d782f6 | 117 | remove_proc_entry("snmp", net->sctp.proc_net_sctp); |
1da177e4 LT |
118 | } |
119 | ||
120 | /* Dump local addresses of an association/endpoint. */ | |
121 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
122 | { | |
bca735bd | 123 | struct sctp_association *asoc; |
1da177e4 | 124 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
125 | struct sctp_transport *peer; |
126 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
127 | struct sctp_af *af; |
128 | ||
bca735bd | 129 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
f9e42b85 DB |
130 | asoc = sctp_assoc(epb); |
131 | ||
132 | peer = asoc->peer.primary_path; | |
133 | if (unlikely(peer == NULL)) { | |
b527fe69 | 134 | WARN(1, "Association %p with NULL primary path!\n", asoc); |
f9e42b85 DB |
135 | return; |
136 | } | |
137 | ||
138 | primary = &peer->saddr; | |
bca735bd VY |
139 | } |
140 | ||
0b0fe913 TG |
141 | rcu_read_lock(); |
142 | list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { | |
143 | if (!laddr->valid) | |
144 | continue; | |
145 | ||
5f242a13 | 146 | addr = &laddr->a; |
1da177e4 | 147 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
148 | if (primary && af->cmp_addr(addr, primary)) { |
149 | seq_printf(seq, "*"); | |
150 | } | |
5f242a13 | 151 | af->seq_dump_addr(seq, addr); |
1da177e4 | 152 | } |
0b0fe913 | 153 | rcu_read_unlock(); |
1da177e4 LT |
154 | } |
155 | ||
156 | /* Dump remote addresses of an association. */ | |
157 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
158 | { | |
1da177e4 | 159 | struct sctp_transport *transport; |
bca735bd | 160 | union sctp_addr *addr, *primary; |
1da177e4 LT |
161 | struct sctp_af *af; |
162 | ||
acd2bc96 | 163 | primary = &assoc->peer.primary_addr; |
45122ca2 | 164 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, |
9dbc15f0 | 165 | transports) { |
5f242a13 | 166 | addr = &transport->ipaddr; |
45122ca2 | 167 | |
1da177e4 | 168 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 169 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
170 | seq_printf(seq, "*"); |
171 | } | |
5f242a13 | 172 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
173 | } |
174 | } | |
175 | ||
26ac8e5f | 176 | static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
bca735bd | 177 | { |
49392e5e | 178 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
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 | ||
bca735bd VY |
187 | return (void *)pos; |
188 | } | |
189 | ||
190 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
191 | { | |
bca735bd VY |
192 | } |
193 | ||
194 | ||
26ac8e5f | 195 | static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 196 | { |
49392e5e | 197 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
198 | return NULL; |
199 | ||
bca735bd VY |
200 | return pos; |
201 | } | |
202 | ||
203 | ||
1da177e4 LT |
204 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
205 | static 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; | |
38b0e42a | 211 | int hash = *(loff_t *)v; |
bca735bd | 212 | |
49392e5e | 213 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
214 | return -ENOMEM; |
215 | ||
49392e5e | 216 | head = &sctp_ep_hashtable[hash]; |
79b91130 | 217 | local_bh_disable(); |
bca735bd | 218 | read_lock(&head->lock); |
b67bfe0d | 219 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
220 | ep = sctp_ep(epb); |
221 | sk = epb->sk; | |
6932f119 | 222 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 223 | continue; |
d14c5ab6 | 224 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk, |
49392e5e | 225 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 226 | epb->bind_addr.port, |
a7cb5a49 EB |
227 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
228 | sock_i_ino(sk)); | |
bca735bd VY |
229 | |
230 | sctp_seq_dump_local_addrs(seq, epb); | |
231 | seq_printf(seq, "\n"); | |
1da177e4 | 232 | } |
bca735bd | 233 | read_unlock(&head->lock); |
79b91130 | 234 | local_bh_enable(); |
1da177e4 LT |
235 | |
236 | return 0; | |
237 | } | |
238 | ||
56b3d975 | 239 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
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 | ||
1da177e4 LT |
247 | /* Initialize the seq file operations for 'eps' object. */ |
248 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
249 | { | |
13d782f6 EB |
250 | return seq_open_net(inode, file, &sctp_eps_ops, |
251 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
252 | } |
253 | ||
da7071d7 | 254 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
255 | .open = sctp_eps_seq_open, |
256 | .read = seq_read, | |
257 | .llseek = seq_lseek, | |
0da9a0c2 | 258 | .release = seq_release_net, |
1da177e4 LT |
259 | }; |
260 | ||
261 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 262 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
263 | { |
264 | struct proc_dir_entry *p; | |
265 | ||
13d782f6 EB |
266 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
267 | &sctp_eps_seq_fops); | |
1da177e4 LT |
268 | if (!p) |
269 | return -ENOMEM; | |
270 | ||
1da177e4 LT |
271 | return 0; |
272 | } | |
273 | ||
274 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 275 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 276 | { |
13d782f6 | 277 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
278 | } |
279 | ||
39f66a7d XL |
280 | struct sctp_ht_iter { |
281 | struct seq_net_private p; | |
282 | struct rhashtable_iter hti; | |
283 | }; | |
bca735bd | 284 | |
39f66a7d | 285 | static struct sctp_transport *sctp_transport_get_next(struct seq_file *seq) |
bca735bd | 286 | { |
39f66a7d XL |
287 | struct sctp_ht_iter *iter = seq->private; |
288 | struct sctp_transport *t; | |
bca735bd | 289 | |
39f66a7d XL |
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 | } | |
bca735bd | 297 | |
39f66a7d XL |
298 | if (net_eq(sock_net(t->asoc->base.sk), seq_file_net(seq)) && |
299 | t->asoc->peer.primary_path == t) | |
300 | break; | |
301 | } | |
bca735bd | 302 | |
39f66a7d | 303 | return t; |
bca735bd VY |
304 | } |
305 | ||
39f66a7d XL |
306 | static struct sctp_transport *sctp_transport_get_idx(struct seq_file *seq, |
307 | loff_t pos) | |
308 | { | |
fb331185 | 309 | void *obj = SEQ_START_TOKEN; |
39f66a7d XL |
310 | |
311 | while (pos && (obj = sctp_transport_get_next(seq)) && !IS_ERR(obj)) | |
312 | pos--; | |
313 | ||
314 | return obj; | |
315 | } | |
316 | ||
317 | static int sctp_transport_walk_start(struct seq_file *seq) | |
bca735bd | 318 | { |
39f66a7d XL |
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; | |
bca735bd VY |
329 | } |
330 | ||
39f66a7d XL |
331 | static 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 | ||
339 | static 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 | ||
fb331185 | 346 | return sctp_transport_get_idx(seq, *pos); |
39f66a7d XL |
347 | } |
348 | ||
349 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
350 | { | |
351 | sctp_transport_walk_stop(seq); | |
352 | } | |
bca735bd | 353 | |
26ac8e5f | 354 | static void *sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 355 | { |
39f66a7d | 356 | ++*pos; |
bca735bd | 357 | |
39f66a7d | 358 | return sctp_transport_get_next(seq); |
bca735bd VY |
359 | } |
360 | ||
1da177e4 LT |
361 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
362 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
363 | { | |
39f66a7d | 364 | struct sctp_transport *transport; |
1da177e4 | 365 | struct sctp_association *assoc; |
39f66a7d | 366 | struct sctp_ep_common *epb; |
1da177e4 | 367 | struct sock *sk; |
bca735bd | 368 | |
39f66a7d XL |
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; | |
1da177e4 | 376 | } |
39f66a7d XL |
377 | |
378 | transport = (struct sctp_transport *)v; | |
fba4c330 XL |
379 | if (!sctp_transport_hold(transport)) |
380 | return 0; | |
39f66a7d XL |
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"); | |
1da177e4 | 412 | |
fba4c330 XL |
413 | sctp_transport_put(transport); |
414 | ||
1da177e4 LT |
415 | return 0; |
416 | } | |
417 | ||
56b3d975 | 418 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
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 | ||
1da177e4 LT |
425 | /* Initialize the seq file operations for 'assocs' object. */ |
426 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
427 | { | |
13d782f6 | 428 | return seq_open_net(inode, file, &sctp_assoc_ops, |
39f66a7d | 429 | sizeof(struct sctp_ht_iter)); |
1da177e4 LT |
430 | } |
431 | ||
da7071d7 | 432 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
433 | .open = sctp_assocs_seq_open, |
434 | .read = seq_read, | |
435 | .llseek = seq_lseek, | |
0da9a0c2 | 436 | .release = seq_release_net, |
1da177e4 LT |
437 | }; |
438 | ||
439 | /* Set up the proc fs entry for 'assocs' object. */ | |
13d782f6 | 440 | int __net_init sctp_assocs_proc_init(struct net *net) |
1da177e4 LT |
441 | { |
442 | struct proc_dir_entry *p; | |
443 | ||
13d782f6 | 444 | p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, |
459eea74 | 445 | &sctp_assocs_seq_fops); |
1da177e4 LT |
446 | if (!p) |
447 | return -ENOMEM; | |
448 | ||
1da177e4 LT |
449 | return 0; |
450 | } | |
451 | ||
452 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
13d782f6 | 453 | void sctp_assocs_proc_exit(struct net *net) |
1da177e4 | 454 | { |
13d782f6 | 455 | remove_proc_entry("assocs", net->sctp.proc_net_sctp); |
1da177e4 | 456 | } |
20c2c1fd NH |
457 | |
458 | static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos) | |
459 | { | |
39f66a7d | 460 | int err = sctp_transport_walk_start(seq); |
20c2c1fd | 461 | |
39f66a7d XL |
462 | if (err) |
463 | return ERR_PTR(err); | |
20c2c1fd | 464 | |
fb331185 | 465 | return sctp_transport_get_idx(seq, *pos); |
20c2c1fd NH |
466 | } |
467 | ||
468 | static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
469 | { | |
39f66a7d | 470 | ++*pos; |
20c2c1fd | 471 | |
39f66a7d | 472 | return sctp_transport_get_next(seq); |
20c2c1fd NH |
473 | } |
474 | ||
475 | static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) | |
476 | { | |
39f66a7d | 477 | sctp_transport_walk_stop(seq); |
20c2c1fd NH |
478 | } |
479 | ||
480 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) | |
481 | { | |
20c2c1fd | 482 | struct sctp_association *assoc; |
3d73e8fa | 483 | struct sctp_transport *transport, *tsp; |
20c2c1fd | 484 | |
39f66a7d XL |
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 | } | |
20c2c1fd | 490 | |
3d73e8fa XL |
491 | transport = (struct sctp_transport *)v; |
492 | if (!sctp_transport_hold(transport)) | |
fba4c330 | 493 | return 0; |
3d73e8fa | 494 | assoc = transport->asoc; |
39f66a7d XL |
495 | |
496 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, | |
497 | transports) { | |
39f66a7d XL |
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); | |
45122ca2 | 543 | |
39f66a7d | 544 | seq_printf(seq, "\n"); |
20c2c1fd NH |
545 | } |
546 | ||
3d73e8fa | 547 | sctp_transport_put(transport); |
fba4c330 | 548 | |
20c2c1fd | 549 | return 0; |
20c2c1fd NH |
550 | } |
551 | ||
552 | static 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. */ | |
13d782f6 | 560 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 561 | { |
13d782f6 | 562 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
563 | } |
564 | ||
565 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
566 | { | |
13d782f6 | 567 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
39f66a7d | 568 | sizeof(struct sctp_ht_iter)); |
20c2c1fd NH |
569 | } |
570 | ||
571 | static const struct file_operations sctp_remaddr_seq_fops = { | |
572 | .open = sctp_remaddr_seq_open, | |
573 | .read = seq_read, | |
574 | .llseek = seq_lseek, | |
0da9a0c2 | 575 | .release = seq_release_net, |
20c2c1fd NH |
576 | }; |
577 | ||
13d782f6 | 578 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
579 | { |
580 | struct proc_dir_entry *p; | |
581 | ||
13d782f6 EB |
582 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
583 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
584 | if (!p) |
585 | return -ENOMEM; | |
20c2c1fd NH |
586 | return 0; |
587 | } |