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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 | .owner = THIS_MODULE, |
99 | .open = sctp_snmp_seq_open, | |
100 | .read = seq_read, | |
101 | .llseek = seq_lseek, | |
0da9a0c2 | 102 | .release = single_release_net, |
1da177e4 LT |
103 | }; |
104 | ||
105 | /* Set up the proc fs entry for 'snmp' object. */ | |
13d782f6 | 106 | int __net_init sctp_snmp_proc_init(struct net *net) |
1da177e4 LT |
107 | { |
108 | struct proc_dir_entry *p; | |
109 | ||
13d782f6 EB |
110 | p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp, |
111 | &sctp_snmp_seq_fops); | |
1da177e4 LT |
112 | if (!p) |
113 | return -ENOMEM; | |
114 | ||
1da177e4 LT |
115 | return 0; |
116 | } | |
117 | ||
118 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
13d782f6 | 119 | void sctp_snmp_proc_exit(struct net *net) |
1da177e4 | 120 | { |
13d782f6 | 121 | remove_proc_entry("snmp", net->sctp.proc_net_sctp); |
1da177e4 LT |
122 | } |
123 | ||
124 | /* Dump local addresses of an association/endpoint. */ | |
125 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
126 | { | |
bca735bd | 127 | struct sctp_association *asoc; |
1da177e4 | 128 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
129 | struct sctp_transport *peer; |
130 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
131 | struct sctp_af *af; |
132 | ||
bca735bd | 133 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
f9e42b85 DB |
134 | asoc = sctp_assoc(epb); |
135 | ||
136 | peer = asoc->peer.primary_path; | |
137 | if (unlikely(peer == NULL)) { | |
b527fe69 | 138 | WARN(1, "Association %p with NULL primary path!\n", asoc); |
f9e42b85 DB |
139 | return; |
140 | } | |
141 | ||
142 | primary = &peer->saddr; | |
bca735bd VY |
143 | } |
144 | ||
0b0fe913 TG |
145 | rcu_read_lock(); |
146 | list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { | |
147 | if (!laddr->valid) | |
148 | continue; | |
149 | ||
5f242a13 | 150 | addr = &laddr->a; |
1da177e4 | 151 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
152 | if (primary && af->cmp_addr(addr, primary)) { |
153 | seq_printf(seq, "*"); | |
154 | } | |
5f242a13 | 155 | af->seq_dump_addr(seq, addr); |
1da177e4 | 156 | } |
0b0fe913 | 157 | rcu_read_unlock(); |
1da177e4 LT |
158 | } |
159 | ||
160 | /* Dump remote addresses of an association. */ | |
161 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
162 | { | |
1da177e4 | 163 | struct sctp_transport *transport; |
bca735bd | 164 | union sctp_addr *addr, *primary; |
1da177e4 LT |
165 | struct sctp_af *af; |
166 | ||
acd2bc96 | 167 | primary = &assoc->peer.primary_addr; |
45122ca2 | 168 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, |
9dbc15f0 | 169 | transports) { |
5f242a13 | 170 | addr = &transport->ipaddr; |
45122ca2 | 171 | |
1da177e4 | 172 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 173 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
174 | seq_printf(seq, "*"); |
175 | } | |
5f242a13 | 176 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
177 | } |
178 | } | |
179 | ||
26ac8e5f | 180 | static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
bca735bd | 181 | { |
49392e5e | 182 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
183 | return NULL; |
184 | ||
185 | if (*pos < 0) | |
186 | *pos = 0; | |
187 | ||
188 | if (*pos == 0) | |
189 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
190 | ||
bca735bd VY |
191 | return (void *)pos; |
192 | } | |
193 | ||
194 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
195 | { | |
bca735bd VY |
196 | } |
197 | ||
198 | ||
26ac8e5f | 199 | static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 200 | { |
49392e5e | 201 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
202 | return NULL; |
203 | ||
bca735bd VY |
204 | return pos; |
205 | } | |
206 | ||
207 | ||
1da177e4 LT |
208 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
209 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
210 | { | |
211 | struct sctp_hashbucket *head; | |
212 | struct sctp_ep_common *epb; | |
213 | struct sctp_endpoint *ep; | |
214 | struct sock *sk; | |
38b0e42a | 215 | int hash = *(loff_t *)v; |
bca735bd | 216 | |
49392e5e | 217 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
218 | return -ENOMEM; |
219 | ||
49392e5e | 220 | head = &sctp_ep_hashtable[hash]; |
c0a4c2d1 | 221 | read_lock_bh(&head->lock); |
b67bfe0d | 222 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
223 | ep = sctp_ep(epb); |
224 | sk = epb->sk; | |
6932f119 | 225 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 226 | continue; |
d14c5ab6 | 227 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk, |
49392e5e | 228 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 229 | epb->bind_addr.port, |
a7cb5a49 EB |
230 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
231 | sock_i_ino(sk)); | |
bca735bd VY |
232 | |
233 | sctp_seq_dump_local_addrs(seq, epb); | |
234 | seq_printf(seq, "\n"); | |
1da177e4 | 235 | } |
c0a4c2d1 | 236 | read_unlock_bh(&head->lock); |
1da177e4 LT |
237 | |
238 | return 0; | |
239 | } | |
240 | ||
56b3d975 | 241 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
242 | .start = sctp_eps_seq_start, |
243 | .next = sctp_eps_seq_next, | |
244 | .stop = sctp_eps_seq_stop, | |
245 | .show = sctp_eps_seq_show, | |
246 | }; | |
247 | ||
248 | ||
1da177e4 LT |
249 | /* Initialize the seq file operations for 'eps' object. */ |
250 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
251 | { | |
13d782f6 EB |
252 | return seq_open_net(inode, file, &sctp_eps_ops, |
253 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
254 | } |
255 | ||
da7071d7 | 256 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
257 | .open = sctp_eps_seq_open, |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
0da9a0c2 | 260 | .release = seq_release_net, |
1da177e4 LT |
261 | }; |
262 | ||
263 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 264 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
265 | { |
266 | struct proc_dir_entry *p; | |
267 | ||
13d782f6 EB |
268 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
269 | &sctp_eps_seq_fops); | |
1da177e4 LT |
270 | if (!p) |
271 | return -ENOMEM; | |
272 | ||
1da177e4 LT |
273 | return 0; |
274 | } | |
275 | ||
276 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 277 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 278 | { |
13d782f6 | 279 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
280 | } |
281 | ||
39f66a7d XL |
282 | struct sctp_ht_iter { |
283 | struct seq_net_private p; | |
284 | struct rhashtable_iter hti; | |
53fa1036 | 285 | int start_fail; |
39f66a7d | 286 | }; |
bca735bd | 287 | |
b5e2f4e6 | 288 | static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos) |
39f66a7d | 289 | { |
626d16f5 XL |
290 | struct sctp_ht_iter *iter = seq->private; |
291 | int err = sctp_transport_walk_start(&iter->hti); | |
39f66a7d | 292 | |
53fa1036 XL |
293 | if (err) { |
294 | iter->start_fail = 1; | |
39f66a7d | 295 | return ERR_PTR(err); |
53fa1036 | 296 | } |
39f66a7d | 297 | |
54236ab0 | 298 | iter->start_fail = 0; |
626d16f5 | 299 | return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos); |
39f66a7d XL |
300 | } |
301 | ||
b5e2f4e6 | 302 | static void sctp_transport_seq_stop(struct seq_file *seq, void *v) |
39f66a7d | 303 | { |
626d16f5 XL |
304 | struct sctp_ht_iter *iter = seq->private; |
305 | ||
53fa1036 XL |
306 | if (iter->start_fail) |
307 | return; | |
626d16f5 | 308 | sctp_transport_walk_stop(&iter->hti); |
39f66a7d | 309 | } |
bca735bd | 310 | |
b5e2f4e6 | 311 | static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 312 | { |
626d16f5 XL |
313 | struct sctp_ht_iter *iter = seq->private; |
314 | ||
39f66a7d | 315 | ++*pos; |
bca735bd | 316 | |
626d16f5 | 317 | return sctp_transport_get_next(seq_file_net(seq), &iter->hti); |
bca735bd VY |
318 | } |
319 | ||
1da177e4 LT |
320 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
321 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
322 | { | |
39f66a7d | 323 | struct sctp_transport *transport; |
1da177e4 | 324 | struct sctp_association *assoc; |
39f66a7d | 325 | struct sctp_ep_common *epb; |
1da177e4 | 326 | struct sock *sk; |
bca735bd | 327 | |
39f66a7d XL |
328 | if (v == SEQ_START_TOKEN) { |
329 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " | |
330 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
331 | "RPORT LADDRS <-> RADDRS " | |
332 | "HBINT INS OUTS MAXRT T1X T2X RTXC " | |
333 | "wmema wmemq sndbuf rcvbuf\n"); | |
334 | return 0; | |
1da177e4 | 335 | } |
39f66a7d XL |
336 | |
337 | transport = (struct sctp_transport *)v; | |
fba4c330 XL |
338 | if (!sctp_transport_hold(transport)) |
339 | return 0; | |
39f66a7d XL |
340 | assoc = transport->asoc; |
341 | epb = &assoc->base; | |
342 | sk = epb->sk; | |
343 | ||
344 | seq_printf(seq, | |
345 | "%8pK %8pK %-3d %-3d %-2d %-4d " | |
346 | "%4d %8d %8d %7u %5lu %-5d %5d ", | |
347 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, | |
348 | assoc->state, 0, | |
349 | assoc->assoc_id, | |
350 | assoc->sndbuf_used, | |
351 | atomic_read(&assoc->rmem_alloc), | |
352 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), | |
353 | sock_i_ino(sk), | |
354 | epb->bind_addr.port, | |
355 | assoc->peer.port); | |
356 | seq_printf(seq, " "); | |
357 | sctp_seq_dump_local_addrs(seq, epb); | |
358 | seq_printf(seq, "<-> "); | |
359 | sctp_seq_dump_remote_addrs(seq, assoc); | |
360 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d " | |
361 | "%8d %8d %8d %8d", | |
cee360ab XL |
362 | assoc->hbinterval, assoc->stream.incnt, |
363 | assoc->stream.outcnt, assoc->max_retrans, | |
39f66a7d XL |
364 | assoc->init_retries, assoc->shutdown_retries, |
365 | assoc->rtx_data_chunks, | |
14afee4b | 366 | refcount_read(&sk->sk_wmem_alloc), |
39f66a7d XL |
367 | sk->sk_wmem_queued, |
368 | sk->sk_sndbuf, | |
369 | sk->sk_rcvbuf); | |
370 | seq_printf(seq, "\n"); | |
1da177e4 | 371 | |
fba4c330 XL |
372 | sctp_transport_put(transport); |
373 | ||
1da177e4 LT |
374 | return 0; |
375 | } | |
376 | ||
56b3d975 | 377 | static const struct seq_operations sctp_assoc_ops = { |
b5e2f4e6 XL |
378 | .start = sctp_transport_seq_start, |
379 | .next = sctp_transport_seq_next, | |
380 | .stop = sctp_transport_seq_stop, | |
bca735bd VY |
381 | .show = sctp_assocs_seq_show, |
382 | }; | |
383 | ||
1da177e4 LT |
384 | /* Initialize the seq file operations for 'assocs' object. */ |
385 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
386 | { | |
13d782f6 | 387 | return seq_open_net(inode, file, &sctp_assoc_ops, |
39f66a7d | 388 | sizeof(struct sctp_ht_iter)); |
1da177e4 LT |
389 | } |
390 | ||
da7071d7 | 391 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
392 | .open = sctp_assocs_seq_open, |
393 | .read = seq_read, | |
394 | .llseek = seq_lseek, | |
0da9a0c2 | 395 | .release = seq_release_net, |
1da177e4 LT |
396 | }; |
397 | ||
398 | /* Set up the proc fs entry for 'assocs' object. */ | |
13d782f6 | 399 | int __net_init sctp_assocs_proc_init(struct net *net) |
1da177e4 LT |
400 | { |
401 | struct proc_dir_entry *p; | |
402 | ||
13d782f6 | 403 | p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, |
459eea74 | 404 | &sctp_assocs_seq_fops); |
1da177e4 LT |
405 | if (!p) |
406 | return -ENOMEM; | |
407 | ||
1da177e4 LT |
408 | return 0; |
409 | } | |
410 | ||
411 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
13d782f6 | 412 | void sctp_assocs_proc_exit(struct net *net) |
1da177e4 | 413 | { |
13d782f6 | 414 | remove_proc_entry("assocs", net->sctp.proc_net_sctp); |
1da177e4 | 415 | } |
20c2c1fd | 416 | |
20c2c1fd NH |
417 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) |
418 | { | |
20c2c1fd | 419 | struct sctp_association *assoc; |
3d73e8fa | 420 | struct sctp_transport *transport, *tsp; |
20c2c1fd | 421 | |
39f66a7d XL |
422 | if (v == SEQ_START_TOKEN) { |
423 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
424 | "REM_ADDR_RTX START STATE\n"); | |
425 | return 0; | |
426 | } | |
20c2c1fd | 427 | |
3d73e8fa XL |
428 | transport = (struct sctp_transport *)v; |
429 | if (!sctp_transport_hold(transport)) | |
fba4c330 | 430 | return 0; |
3d73e8fa | 431 | assoc = transport->asoc; |
39f66a7d XL |
432 | |
433 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, | |
434 | transports) { | |
39f66a7d XL |
435 | /* |
436 | * The remote address (ADDR) | |
437 | */ | |
438 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
439 | seq_printf(seq, " "); | |
440 | /* | |
441 | * The association ID (ASSOC_ID) | |
442 | */ | |
443 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); | |
444 | ||
445 | /* | |
446 | * If the Heartbeat is active (HB_ACT) | |
447 | * Note: 1 = Active, 0 = Inactive | |
448 | */ | |
449 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); | |
450 | ||
451 | /* | |
452 | * Retransmit time out (RTO) | |
453 | */ | |
454 | seq_printf(seq, "%lu ", tsp->rto); | |
455 | ||
456 | /* | |
457 | * Maximum path retransmit count (PATH_MAX_RTX) | |
458 | */ | |
459 | seq_printf(seq, "%d ", tsp->pathmaxrxt); | |
460 | ||
461 | /* | |
462 | * remote address retransmit count (REM_ADDR_RTX) | |
463 | * Note: We don't have a way to tally this at the moment | |
464 | * so lets just leave it as zero for the moment | |
465 | */ | |
466 | seq_puts(seq, "0 "); | |
467 | ||
468 | /* | |
469 | * remote address start time (START). This is also not | |
470 | * currently implemented, but we can record it with a | |
471 | * jiffies marker in a subsequent patch | |
472 | */ | |
473 | seq_puts(seq, "0 "); | |
474 | ||
475 | /* | |
476 | * The current state of this destination. I.e. | |
477 | * SCTP_ACTIVE, SCTP_INACTIVE, ... | |
478 | */ | |
479 | seq_printf(seq, "%d", tsp->state); | |
45122ca2 | 480 | |
39f66a7d | 481 | seq_printf(seq, "\n"); |
20c2c1fd NH |
482 | } |
483 | ||
3d73e8fa | 484 | sctp_transport_put(transport); |
fba4c330 | 485 | |
20c2c1fd | 486 | return 0; |
20c2c1fd NH |
487 | } |
488 | ||
489 | static const struct seq_operations sctp_remaddr_ops = { | |
b5e2f4e6 XL |
490 | .start = sctp_transport_seq_start, |
491 | .next = sctp_transport_seq_next, | |
492 | .stop = sctp_transport_seq_stop, | |
20c2c1fd NH |
493 | .show = sctp_remaddr_seq_show, |
494 | }; | |
495 | ||
496 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
13d782f6 | 497 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 498 | { |
13d782f6 | 499 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
500 | } |
501 | ||
502 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
503 | { | |
13d782f6 | 504 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
39f66a7d | 505 | sizeof(struct sctp_ht_iter)); |
20c2c1fd NH |
506 | } |
507 | ||
508 | static const struct file_operations sctp_remaddr_seq_fops = { | |
509 | .open = sctp_remaddr_seq_open, | |
510 | .read = seq_read, | |
511 | .llseek = seq_lseek, | |
0da9a0c2 | 512 | .release = seq_release_net, |
20c2c1fd NH |
513 | }; |
514 | ||
13d782f6 | 515 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
516 | { |
517 | struct proc_dir_entry *p; | |
518 | ||
13d782f6 EB |
519 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
520 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
521 | if (!p) |
522 | return -ENOMEM; | |
20c2c1fd NH |
523 | return 0; |
524 | } |