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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 | { | |
7d64a94b | 76 | unsigned long buff[SCTP_MIB_MAX]; |
13d782f6 | 77 | struct net *net = seq->private; |
1da177e4 LT |
78 | int i; |
79 | ||
7d64a94b JH |
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); | |
6d4a741c | 84 | for (i = 0; sctp_snmp_list[i].name; i++) |
1da177e4 | 85 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, |
7d64a94b | 86 | buff[i]); |
1da177e4 LT |
87 | |
88 | return 0; | |
89 | } | |
90 | ||
91 | /* Initialize the seq file operations for 'snmp' object. */ | |
92 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
93 | { | |
13d782f6 | 94 | return single_open_net(inode, file, sctp_snmp_seq_show); |
1da177e4 LT |
95 | } |
96 | ||
da7071d7 | 97 | static const struct file_operations sctp_snmp_seq_fops = { |
1da177e4 LT |
98 | .open = sctp_snmp_seq_open, |
99 | .read = seq_read, | |
100 | .llseek = seq_lseek, | |
0da9a0c2 | 101 | .release = single_release_net, |
1da177e4 LT |
102 | }; |
103 | ||
104 | /* Set up the proc fs entry for 'snmp' object. */ | |
13d782f6 | 105 | int __net_init sctp_snmp_proc_init(struct net *net) |
1da177e4 LT |
106 | { |
107 | struct proc_dir_entry *p; | |
108 | ||
13d782f6 EB |
109 | p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp, |
110 | &sctp_snmp_seq_fops); | |
1da177e4 LT |
111 | if (!p) |
112 | return -ENOMEM; | |
113 | ||
1da177e4 LT |
114 | return 0; |
115 | } | |
116 | ||
117 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
13d782f6 | 118 | void sctp_snmp_proc_exit(struct net *net) |
1da177e4 | 119 | { |
13d782f6 | 120 | remove_proc_entry("snmp", net->sctp.proc_net_sctp); |
1da177e4 LT |
121 | } |
122 | ||
123 | /* Dump local addresses of an association/endpoint. */ | |
124 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
125 | { | |
bca735bd | 126 | struct sctp_association *asoc; |
1da177e4 | 127 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
128 | struct sctp_transport *peer; |
129 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
130 | struct sctp_af *af; |
131 | ||
bca735bd | 132 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
f9e42b85 DB |
133 | asoc = sctp_assoc(epb); |
134 | ||
135 | peer = asoc->peer.primary_path; | |
136 | if (unlikely(peer == NULL)) { | |
b527fe69 | 137 | WARN(1, "Association %p with NULL primary path!\n", asoc); |
f9e42b85 DB |
138 | return; |
139 | } | |
140 | ||
141 | primary = &peer->saddr; | |
bca735bd VY |
142 | } |
143 | ||
0b0fe913 TG |
144 | rcu_read_lock(); |
145 | list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { | |
146 | if (!laddr->valid) | |
147 | continue; | |
148 | ||
5f242a13 | 149 | addr = &laddr->a; |
1da177e4 | 150 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
151 | if (primary && af->cmp_addr(addr, primary)) { |
152 | seq_printf(seq, "*"); | |
153 | } | |
5f242a13 | 154 | af->seq_dump_addr(seq, addr); |
1da177e4 | 155 | } |
0b0fe913 | 156 | rcu_read_unlock(); |
1da177e4 LT |
157 | } |
158 | ||
159 | /* Dump remote addresses of an association. */ | |
160 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
161 | { | |
1da177e4 | 162 | struct sctp_transport *transport; |
bca735bd | 163 | union sctp_addr *addr, *primary; |
1da177e4 LT |
164 | struct sctp_af *af; |
165 | ||
acd2bc96 | 166 | primary = &assoc->peer.primary_addr; |
45122ca2 | 167 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, |
9dbc15f0 | 168 | transports) { |
5f242a13 | 169 | addr = &transport->ipaddr; |
45122ca2 | 170 | |
1da177e4 | 171 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 172 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
173 | seq_printf(seq, "*"); |
174 | } | |
5f242a13 | 175 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
176 | } |
177 | } | |
178 | ||
26ac8e5f | 179 | static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
bca735bd | 180 | { |
49392e5e | 181 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
182 | return NULL; |
183 | ||
184 | if (*pos < 0) | |
185 | *pos = 0; | |
186 | ||
187 | if (*pos == 0) | |
188 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
189 | ||
bca735bd VY |
190 | return (void *)pos; |
191 | } | |
192 | ||
193 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
194 | { | |
bca735bd VY |
195 | } |
196 | ||
197 | ||
26ac8e5f | 198 | static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 199 | { |
49392e5e | 200 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
201 | return NULL; |
202 | ||
bca735bd VY |
203 | return pos; |
204 | } | |
205 | ||
206 | ||
1da177e4 LT |
207 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
208 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
209 | { | |
210 | struct sctp_hashbucket *head; | |
211 | struct sctp_ep_common *epb; | |
212 | struct sctp_endpoint *ep; | |
213 | struct sock *sk; | |
38b0e42a | 214 | int hash = *(loff_t *)v; |
bca735bd | 215 | |
49392e5e | 216 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
217 | return -ENOMEM; |
218 | ||
49392e5e | 219 | head = &sctp_ep_hashtable[hash]; |
c0a4c2d1 | 220 | read_lock_bh(&head->lock); |
b67bfe0d | 221 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
222 | ep = sctp_ep(epb); |
223 | sk = epb->sk; | |
6932f119 | 224 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 225 | continue; |
d14c5ab6 | 226 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk, |
49392e5e | 227 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 228 | epb->bind_addr.port, |
a7cb5a49 EB |
229 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
230 | sock_i_ino(sk)); | |
bca735bd VY |
231 | |
232 | sctp_seq_dump_local_addrs(seq, epb); | |
233 | seq_printf(seq, "\n"); | |
1da177e4 | 234 | } |
c0a4c2d1 | 235 | read_unlock_bh(&head->lock); |
1da177e4 LT |
236 | |
237 | return 0; | |
238 | } | |
239 | ||
56b3d975 | 240 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
241 | .start = sctp_eps_seq_start, |
242 | .next = sctp_eps_seq_next, | |
243 | .stop = sctp_eps_seq_stop, | |
244 | .show = sctp_eps_seq_show, | |
245 | }; | |
246 | ||
247 | ||
1da177e4 LT |
248 | /* Initialize the seq file operations for 'eps' object. */ |
249 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
250 | { | |
13d782f6 EB |
251 | return seq_open_net(inode, file, &sctp_eps_ops, |
252 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
253 | } |
254 | ||
da7071d7 | 255 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
256 | .open = sctp_eps_seq_open, |
257 | .read = seq_read, | |
258 | .llseek = seq_lseek, | |
0da9a0c2 | 259 | .release = seq_release_net, |
1da177e4 LT |
260 | }; |
261 | ||
262 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 263 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
264 | { |
265 | struct proc_dir_entry *p; | |
266 | ||
13d782f6 EB |
267 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
268 | &sctp_eps_seq_fops); | |
1da177e4 LT |
269 | if (!p) |
270 | return -ENOMEM; | |
271 | ||
1da177e4 LT |
272 | return 0; |
273 | } | |
274 | ||
275 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 276 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 277 | { |
13d782f6 | 278 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
279 | } |
280 | ||
39f66a7d XL |
281 | struct sctp_ht_iter { |
282 | struct seq_net_private p; | |
283 | struct rhashtable_iter hti; | |
53fa1036 | 284 | int start_fail; |
39f66a7d | 285 | }; |
bca735bd | 286 | |
b5e2f4e6 | 287 | static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos) |
39f66a7d | 288 | { |
626d16f5 | 289 | struct sctp_ht_iter *iter = seq->private; |
39f66a7d | 290 | |
97a6ec4a | 291 | sctp_transport_walk_start(&iter->hti); |
39f66a7d | 292 | |
54236ab0 | 293 | iter->start_fail = 0; |
626d16f5 | 294 | return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos); |
39f66a7d XL |
295 | } |
296 | ||
b5e2f4e6 | 297 | static void sctp_transport_seq_stop(struct seq_file *seq, void *v) |
39f66a7d | 298 | { |
626d16f5 XL |
299 | struct sctp_ht_iter *iter = seq->private; |
300 | ||
53fa1036 XL |
301 | if (iter->start_fail) |
302 | return; | |
626d16f5 | 303 | sctp_transport_walk_stop(&iter->hti); |
39f66a7d | 304 | } |
bca735bd | 305 | |
b5e2f4e6 | 306 | static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 307 | { |
626d16f5 XL |
308 | struct sctp_ht_iter *iter = seq->private; |
309 | ||
39f66a7d | 310 | ++*pos; |
bca735bd | 311 | |
626d16f5 | 312 | return sctp_transport_get_next(seq_file_net(seq), &iter->hti); |
bca735bd VY |
313 | } |
314 | ||
1da177e4 LT |
315 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
316 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
317 | { | |
39f66a7d | 318 | struct sctp_transport *transport; |
1da177e4 | 319 | struct sctp_association *assoc; |
39f66a7d | 320 | struct sctp_ep_common *epb; |
1da177e4 | 321 | struct sock *sk; |
bca735bd | 322 | |
39f66a7d XL |
323 | if (v == SEQ_START_TOKEN) { |
324 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " | |
325 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
326 | "RPORT LADDRS <-> RADDRS " | |
327 | "HBINT INS OUTS MAXRT T1X T2X RTXC " | |
328 | "wmema wmemq sndbuf rcvbuf\n"); | |
329 | return 0; | |
1da177e4 | 330 | } |
39f66a7d XL |
331 | |
332 | transport = (struct sctp_transport *)v; | |
fba4c330 XL |
333 | if (!sctp_transport_hold(transport)) |
334 | return 0; | |
39f66a7d XL |
335 | assoc = transport->asoc; |
336 | epb = &assoc->base; | |
337 | sk = epb->sk; | |
338 | ||
339 | seq_printf(seq, | |
340 | "%8pK %8pK %-3d %-3d %-2d %-4d " | |
341 | "%4d %8d %8d %7u %5lu %-5d %5d ", | |
342 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, | |
343 | assoc->state, 0, | |
344 | assoc->assoc_id, | |
345 | assoc->sndbuf_used, | |
346 | atomic_read(&assoc->rmem_alloc), | |
347 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), | |
348 | sock_i_ino(sk), | |
349 | epb->bind_addr.port, | |
350 | assoc->peer.port); | |
351 | seq_printf(seq, " "); | |
352 | sctp_seq_dump_local_addrs(seq, epb); | |
353 | seq_printf(seq, "<-> "); | |
354 | sctp_seq_dump_remote_addrs(seq, assoc); | |
355 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d " | |
356 | "%8d %8d %8d %8d", | |
cee360ab XL |
357 | assoc->hbinterval, assoc->stream.incnt, |
358 | assoc->stream.outcnt, assoc->max_retrans, | |
39f66a7d XL |
359 | assoc->init_retries, assoc->shutdown_retries, |
360 | assoc->rtx_data_chunks, | |
14afee4b | 361 | refcount_read(&sk->sk_wmem_alloc), |
39f66a7d XL |
362 | sk->sk_wmem_queued, |
363 | sk->sk_sndbuf, | |
364 | sk->sk_rcvbuf); | |
365 | seq_printf(seq, "\n"); | |
1da177e4 | 366 | |
fba4c330 XL |
367 | sctp_transport_put(transport); |
368 | ||
1da177e4 LT |
369 | return 0; |
370 | } | |
371 | ||
56b3d975 | 372 | static const struct seq_operations sctp_assoc_ops = { |
b5e2f4e6 XL |
373 | .start = sctp_transport_seq_start, |
374 | .next = sctp_transport_seq_next, | |
375 | .stop = sctp_transport_seq_stop, | |
bca735bd VY |
376 | .show = sctp_assocs_seq_show, |
377 | }; | |
378 | ||
1da177e4 LT |
379 | /* Initialize the seq file operations for 'assocs' object. */ |
380 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
381 | { | |
13d782f6 | 382 | return seq_open_net(inode, file, &sctp_assoc_ops, |
39f66a7d | 383 | sizeof(struct sctp_ht_iter)); |
1da177e4 LT |
384 | } |
385 | ||
da7071d7 | 386 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
387 | .open = sctp_assocs_seq_open, |
388 | .read = seq_read, | |
389 | .llseek = seq_lseek, | |
0da9a0c2 | 390 | .release = seq_release_net, |
1da177e4 LT |
391 | }; |
392 | ||
393 | /* Set up the proc fs entry for 'assocs' object. */ | |
13d782f6 | 394 | int __net_init sctp_assocs_proc_init(struct net *net) |
1da177e4 LT |
395 | { |
396 | struct proc_dir_entry *p; | |
397 | ||
13d782f6 | 398 | p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, |
459eea74 | 399 | &sctp_assocs_seq_fops); |
1da177e4 LT |
400 | if (!p) |
401 | return -ENOMEM; | |
402 | ||
1da177e4 LT |
403 | return 0; |
404 | } | |
405 | ||
406 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
13d782f6 | 407 | void sctp_assocs_proc_exit(struct net *net) |
1da177e4 | 408 | { |
13d782f6 | 409 | remove_proc_entry("assocs", net->sctp.proc_net_sctp); |
1da177e4 | 410 | } |
20c2c1fd | 411 | |
20c2c1fd NH |
412 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) |
413 | { | |
20c2c1fd | 414 | struct sctp_association *assoc; |
3d73e8fa | 415 | struct sctp_transport *transport, *tsp; |
20c2c1fd | 416 | |
39f66a7d XL |
417 | if (v == SEQ_START_TOKEN) { |
418 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
419 | "REM_ADDR_RTX START STATE\n"); | |
420 | return 0; | |
421 | } | |
20c2c1fd | 422 | |
3d73e8fa XL |
423 | transport = (struct sctp_transport *)v; |
424 | if (!sctp_transport_hold(transport)) | |
fba4c330 | 425 | return 0; |
3d73e8fa | 426 | assoc = transport->asoc; |
39f66a7d XL |
427 | |
428 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, | |
429 | transports) { | |
39f66a7d XL |
430 | /* |
431 | * The remote address (ADDR) | |
432 | */ | |
433 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
434 | seq_printf(seq, " "); | |
435 | /* | |
436 | * The association ID (ASSOC_ID) | |
437 | */ | |
438 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); | |
439 | ||
440 | /* | |
441 | * If the Heartbeat is active (HB_ACT) | |
442 | * Note: 1 = Active, 0 = Inactive | |
443 | */ | |
444 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); | |
445 | ||
446 | /* | |
447 | * Retransmit time out (RTO) | |
448 | */ | |
449 | seq_printf(seq, "%lu ", tsp->rto); | |
450 | ||
451 | /* | |
452 | * Maximum path retransmit count (PATH_MAX_RTX) | |
453 | */ | |
454 | seq_printf(seq, "%d ", tsp->pathmaxrxt); | |
455 | ||
456 | /* | |
457 | * remote address retransmit count (REM_ADDR_RTX) | |
458 | * Note: We don't have a way to tally this at the moment | |
459 | * so lets just leave it as zero for the moment | |
460 | */ | |
461 | seq_puts(seq, "0 "); | |
462 | ||
463 | /* | |
464 | * remote address start time (START). This is also not | |
465 | * currently implemented, but we can record it with a | |
466 | * jiffies marker in a subsequent patch | |
467 | */ | |
468 | seq_puts(seq, "0 "); | |
469 | ||
470 | /* | |
471 | * The current state of this destination. I.e. | |
472 | * SCTP_ACTIVE, SCTP_INACTIVE, ... | |
473 | */ | |
474 | seq_printf(seq, "%d", tsp->state); | |
45122ca2 | 475 | |
39f66a7d | 476 | seq_printf(seq, "\n"); |
20c2c1fd NH |
477 | } |
478 | ||
3d73e8fa | 479 | sctp_transport_put(transport); |
fba4c330 | 480 | |
20c2c1fd | 481 | return 0; |
20c2c1fd NH |
482 | } |
483 | ||
484 | static const struct seq_operations sctp_remaddr_ops = { | |
b5e2f4e6 XL |
485 | .start = sctp_transport_seq_start, |
486 | .next = sctp_transport_seq_next, | |
487 | .stop = sctp_transport_seq_stop, | |
20c2c1fd NH |
488 | .show = sctp_remaddr_seq_show, |
489 | }; | |
490 | ||
491 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
13d782f6 | 492 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 493 | { |
13d782f6 | 494 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
495 | } |
496 | ||
497 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
498 | { | |
13d782f6 | 499 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
39f66a7d | 500 | sizeof(struct sctp_ht_iter)); |
20c2c1fd NH |
501 | } |
502 | ||
503 | static const struct file_operations sctp_remaddr_seq_fops = { | |
504 | .open = sctp_remaddr_seq_open, | |
505 | .read = seq_read, | |
506 | .llseek = seq_lseek, | |
0da9a0c2 | 507 | .release = seq_release_net, |
20c2c1fd NH |
508 | }; |
509 | ||
13d782f6 | 510 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
511 | { |
512 | struct proc_dir_entry *p; | |
513 | ||
13d782f6 EB |
514 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
515 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
516 | if (!p) |
517 | return -ENOMEM; | |
20c2c1fd NH |
518 | return 0; |
519 | } |