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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, | |
b01a2407 | 81 | snmp_fold_field((void __percpu **)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 TG |
164 | rcu_read_lock(); |
165 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, | |
9dbc15f0 | 166 | transports) { |
5f242a13 | 167 | addr = &transport->ipaddr; |
45122ca2 TG |
168 | if (transport->dead) |
169 | continue; | |
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 | 176 | } |
45122ca2 | 177 | rcu_read_unlock(); |
1da177e4 LT |
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]; |
79b91130 | 221 | local_bh_disable(); |
bca735bd | 222 | read_lock(&head->lock); |
b67bfe0d | 223 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
224 | ep = sctp_ep(epb); |
225 | sk = epb->sk; | |
6932f119 | 226 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 227 | continue; |
d14c5ab6 | 228 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk, |
49392e5e | 229 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 230 | epb->bind_addr.port, |
a7cb5a49 EB |
231 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
232 | sock_i_ino(sk)); | |
bca735bd VY |
233 | |
234 | sctp_seq_dump_local_addrs(seq, epb); | |
235 | seq_printf(seq, "\n"); | |
1da177e4 | 236 | } |
bca735bd | 237 | read_unlock(&head->lock); |
79b91130 | 238 | local_bh_enable(); |
1da177e4 LT |
239 | |
240 | return 0; | |
241 | } | |
242 | ||
56b3d975 | 243 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
244 | .start = sctp_eps_seq_start, |
245 | .next = sctp_eps_seq_next, | |
246 | .stop = sctp_eps_seq_stop, | |
247 | .show = sctp_eps_seq_show, | |
248 | }; | |
249 | ||
250 | ||
1da177e4 LT |
251 | /* Initialize the seq file operations for 'eps' object. */ |
252 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
253 | { | |
13d782f6 EB |
254 | return seq_open_net(inode, file, &sctp_eps_ops, |
255 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
256 | } |
257 | ||
da7071d7 | 258 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
259 | .open = sctp_eps_seq_open, |
260 | .read = seq_read, | |
261 | .llseek = seq_lseek, | |
0da9a0c2 | 262 | .release = seq_release_net, |
1da177e4 LT |
263 | }; |
264 | ||
265 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 266 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
267 | { |
268 | struct proc_dir_entry *p; | |
269 | ||
13d782f6 EB |
270 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
271 | &sctp_eps_seq_fops); | |
1da177e4 LT |
272 | if (!p) |
273 | return -ENOMEM; | |
274 | ||
1da177e4 LT |
275 | return 0; |
276 | } | |
277 | ||
278 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 279 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 280 | { |
13d782f6 | 281 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
282 | } |
283 | ||
bca735bd | 284 | |
26ac8e5f | 285 | static void *sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) |
bca735bd | 286 | { |
49392e5e | 287 | if (*pos >= sctp_assoc_hashsize) |
bca735bd VY |
288 | return NULL; |
289 | ||
290 | if (*pos < 0) | |
291 | *pos = 0; | |
292 | ||
293 | if (*pos == 0) | |
58fbbed4 NH |
294 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
295 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
296 | "RPORT LADDRS <-> RADDRS " | |
f406c8b9 DD |
297 | "HBINT INS OUTS MAXRT T1X T2X RTXC " |
298 | "wmema wmemq sndbuf rcvbuf\n"); | |
bca735bd | 299 | |
bca735bd VY |
300 | return (void *)pos; |
301 | } | |
302 | ||
303 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
304 | { | |
bca735bd VY |
305 | } |
306 | ||
307 | ||
26ac8e5f | 308 | static void *sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
bca735bd | 309 | { |
49392e5e | 310 | if (++*pos >= sctp_assoc_hashsize) |
bca735bd VY |
311 | return NULL; |
312 | ||
bca735bd VY |
313 | return pos; |
314 | } | |
315 | ||
1da177e4 LT |
316 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
317 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
318 | { | |
319 | struct sctp_hashbucket *head; | |
320 | struct sctp_ep_common *epb; | |
321 | struct sctp_association *assoc; | |
322 | struct sock *sk; | |
38b0e42a | 323 | int hash = *(loff_t *)v; |
bca735bd | 324 | |
49392e5e | 325 | if (hash >= sctp_assoc_hashsize) |
bca735bd VY |
326 | return -ENOMEM; |
327 | ||
49392e5e | 328 | head = &sctp_assoc_hashtable[hash]; |
79b91130 | 329 | local_bh_disable(); |
bca735bd | 330 | read_lock(&head->lock); |
b67bfe0d | 331 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
332 | assoc = sctp_assoc(epb); |
333 | sk = epb->sk; | |
6932f119 | 334 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 335 | continue; |
bca735bd | 336 | seq_printf(seq, |
71338aa7 | 337 | "%8pK %8pK %-3d %-3d %-2d %-4d " |
d14c5ab6 | 338 | "%4d %8d %8d %7u %5lu %-5d %5d ", |
bca735bd | 339 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, |
58fbbed4 NH |
340 | assoc->state, hash, |
341 | assoc->assoc_id, | |
bca735bd | 342 | assoc->sndbuf_used, |
6aa2551c | 343 | atomic_read(&assoc->rmem_alloc), |
a7cb5a49 EB |
344 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
345 | sock_i_ino(sk), | |
bca735bd | 346 | epb->bind_addr.port, |
30e93560 | 347 | assoc->peer.port); |
bca735bd VY |
348 | seq_printf(seq, " "); |
349 | sctp_seq_dump_local_addrs(seq, epb); | |
350 | seq_printf(seq, "<-> "); | |
351 | sctp_seq_dump_remote_addrs(seq, assoc); | |
f406c8b9 DD |
352 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d " |
353 | "%8d %8d %8d %8d", | |
30e93560 NH |
354 | assoc->hbinterval, assoc->c.sinit_max_instreams, |
355 | assoc->c.sinit_num_ostreams, assoc->max_retrans, | |
356 | assoc->init_retries, assoc->shutdown_retries, | |
f406c8b9 DD |
357 | assoc->rtx_data_chunks, |
358 | atomic_read(&sk->sk_wmem_alloc), | |
359 | sk->sk_wmem_queued, | |
360 | sk->sk_sndbuf, | |
361 | sk->sk_rcvbuf); | |
bca735bd | 362 | seq_printf(seq, "\n"); |
1da177e4 | 363 | } |
bca735bd | 364 | read_unlock(&head->lock); |
79b91130 | 365 | local_bh_enable(); |
1da177e4 LT |
366 | |
367 | return 0; | |
368 | } | |
369 | ||
56b3d975 | 370 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
371 | .start = sctp_assocs_seq_start, |
372 | .next = sctp_assocs_seq_next, | |
373 | .stop = sctp_assocs_seq_stop, | |
374 | .show = sctp_assocs_seq_show, | |
375 | }; | |
376 | ||
1da177e4 LT |
377 | /* Initialize the seq file operations for 'assocs' object. */ |
378 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
379 | { | |
13d782f6 EB |
380 | return seq_open_net(inode, file, &sctp_assoc_ops, |
381 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
382 | } |
383 | ||
da7071d7 | 384 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
385 | .open = sctp_assocs_seq_open, |
386 | .read = seq_read, | |
387 | .llseek = seq_lseek, | |
0da9a0c2 | 388 | .release = seq_release_net, |
1da177e4 LT |
389 | }; |
390 | ||
391 | /* Set up the proc fs entry for 'assocs' object. */ | |
13d782f6 | 392 | int __net_init sctp_assocs_proc_init(struct net *net) |
1da177e4 LT |
393 | { |
394 | struct proc_dir_entry *p; | |
395 | ||
13d782f6 | 396 | p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, |
459eea74 | 397 | &sctp_assocs_seq_fops); |
1da177e4 LT |
398 | if (!p) |
399 | return -ENOMEM; | |
400 | ||
1da177e4 LT |
401 | return 0; |
402 | } | |
403 | ||
404 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
13d782f6 | 405 | void sctp_assocs_proc_exit(struct net *net) |
1da177e4 | 406 | { |
13d782f6 | 407 | remove_proc_entry("assocs", net->sctp.proc_net_sctp); |
1da177e4 | 408 | } |
20c2c1fd NH |
409 | |
410 | static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos) | |
411 | { | |
412 | if (*pos >= sctp_assoc_hashsize) | |
413 | return NULL; | |
414 | ||
415 | if (*pos < 0) | |
416 | *pos = 0; | |
417 | ||
418 | if (*pos == 0) | |
419 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
420 | "REM_ADDR_RTX START\n"); | |
421 | ||
422 | return (void *)pos; | |
423 | } | |
424 | ||
425 | static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
426 | { | |
427 | if (++*pos >= sctp_assoc_hashsize) | |
428 | return NULL; | |
429 | ||
430 | return pos; | |
431 | } | |
432 | ||
433 | static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) | |
434 | { | |
20c2c1fd NH |
435 | } |
436 | ||
437 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) | |
438 | { | |
439 | struct sctp_hashbucket *head; | |
440 | struct sctp_ep_common *epb; | |
441 | struct sctp_association *assoc; | |
20c2c1fd NH |
442 | struct sctp_transport *tsp; |
443 | int hash = *(loff_t *)v; | |
444 | ||
445 | if (hash >= sctp_assoc_hashsize) | |
446 | return -ENOMEM; | |
447 | ||
448 | head = &sctp_assoc_hashtable[hash]; | |
79b91130 | 449 | local_bh_disable(); |
20c2c1fd | 450 | read_lock(&head->lock); |
45122ca2 | 451 | rcu_read_lock(); |
b67bfe0d | 452 | sctp_for_each_hentry(epb, &head->chain) { |
6932f119 | 453 | if (!net_eq(sock_net(epb->sk), seq_file_net(seq))) |
13d782f6 | 454 | continue; |
20c2c1fd | 455 | assoc = sctp_assoc(epb); |
45122ca2 | 456 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, |
20c2c1fd | 457 | transports) { |
45122ca2 TG |
458 | if (tsp->dead) |
459 | continue; | |
460 | ||
20c2c1fd NH |
461 | /* |
462 | * The remote address (ADDR) | |
463 | */ | |
464 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
465 | seq_printf(seq, " "); | |
466 | ||
467 | /* | |
468 | * The association ID (ASSOC_ID) | |
469 | */ | |
470 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); | |
471 | ||
472 | /* | |
473 | * If the Heartbeat is active (HB_ACT) | |
474 | * Note: 1 = Active, 0 = Inactive | |
475 | */ | |
476 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); | |
477 | ||
478 | /* | |
479 | * Retransmit time out (RTO) | |
480 | */ | |
481 | seq_printf(seq, "%lu ", tsp->rto); | |
482 | ||
483 | /* | |
484 | * Maximum path retransmit count (PATH_MAX_RTX) | |
485 | */ | |
486 | seq_printf(seq, "%d ", tsp->pathmaxrxt); | |
487 | ||
488 | /* | |
489 | * remote address retransmit count (REM_ADDR_RTX) | |
490 | * Note: We don't have a way to tally this at the moment | |
491 | * so lets just leave it as zero for the moment | |
492 | */ | |
493 | seq_printf(seq, "0 "); | |
494 | ||
495 | /* | |
496 | * remote address start time (START). This is also not | |
497 | * currently implemented, but we can record it with a | |
498 | * jiffies marker in a subsequent patch | |
499 | */ | |
500 | seq_printf(seq, "0"); | |
501 | ||
502 | seq_printf(seq, "\n"); | |
503 | } | |
504 | } | |
505 | ||
45122ca2 | 506 | rcu_read_unlock(); |
20c2c1fd | 507 | read_unlock(&head->lock); |
79b91130 | 508 | local_bh_enable(); |
20c2c1fd NH |
509 | |
510 | return 0; | |
511 | ||
512 | } | |
513 | ||
514 | static const struct seq_operations sctp_remaddr_ops = { | |
515 | .start = sctp_remaddr_seq_start, | |
516 | .next = sctp_remaddr_seq_next, | |
517 | .stop = sctp_remaddr_seq_stop, | |
518 | .show = sctp_remaddr_seq_show, | |
519 | }; | |
520 | ||
521 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
13d782f6 | 522 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 523 | { |
13d782f6 | 524 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
525 | } |
526 | ||
527 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
528 | { | |
13d782f6 EB |
529 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
530 | sizeof(struct seq_net_private)); | |
20c2c1fd NH |
531 | } |
532 | ||
533 | static const struct file_operations sctp_remaddr_seq_fops = { | |
534 | .open = sctp_remaddr_seq_open, | |
535 | .read = seq_read, | |
536 | .llseek = seq_lseek, | |
0da9a0c2 | 537 | .release = seq_release_net, |
20c2c1fd NH |
538 | }; |
539 | ||
13d782f6 | 540 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
541 | { |
542 | struct proc_dir_entry *p; | |
543 | ||
13d782f6 EB |
544 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
545 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
546 | if (!p) |
547 | return -ENOMEM; | |
20c2c1fd NH |
548 | return 0; |
549 | } |