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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 | |
19 | * along with GNU CC; see the file COPYING. If not, write to | |
20 | * the Free Software Foundation, 59 Temple Place - Suite 330, | |
21 | * Boston, MA 02111-1307, USA. | |
22 | * | |
23 | * Please send any bug reports or fixes you make to the | |
24 | * email address(es): | |
25 | * lksctp developers <lksctp-developers@lists.sourceforge.net> | |
26 | * | |
27 | * Or submit a bug report through the following website: | |
28 | * http://www.sf.net/projects/lksctp | |
29 | * | |
30 | * Written or modified by: | |
31 | * Sridhar Samudrala <sri@us.ibm.com> | |
32 | * | |
33 | * Any bugs reported given to us we will try to fix... any fixes shared will | |
34 | * be incorporated into the next SCTP release. | |
35 | */ | |
36 | ||
37 | #include <linux/types.h> | |
38 | #include <linux/seq_file.h> | |
39 | #include <linux/init.h> | |
bc3b2d7f | 40 | #include <linux/export.h> |
1da177e4 | 41 | #include <net/sctp/sctp.h> |
3f5340a6 | 42 | #include <net/ip.h> /* for snmp_fold_field */ |
1da177e4 | 43 | |
5833929c | 44 | static const struct snmp_mib sctp_snmp_list[] = { |
1da177e4 LT |
45 | SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB), |
46 | SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS), | |
47 | SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS), | |
48 | SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS), | |
49 | SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS), | |
50 | SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES), | |
51 | SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS), | |
52 | SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS), | |
53 | SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS), | |
54 | SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS), | |
55 | SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS), | |
56 | SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS), | |
57 | SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS), | |
58 | SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS), | |
59 | SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS), | |
60 | SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS), | |
61 | SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS), | |
ac0b0462 SS |
62 | SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS), |
63 | SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS), | |
64 | SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS), | |
65 | SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS), | |
66 | SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS), | |
67 | SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS), | |
68 | SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS), | |
69 | SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS), | |
70 | SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS), | |
71 | SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS), | |
72 | SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS), | |
73 | SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ), | |
74 | SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG), | |
75 | SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS), | |
76 | SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS), | |
d2287f84 | 77 | SNMP_MIB_SENTINEL |
1da177e4 LT |
78 | }; |
79 | ||
1da177e4 LT |
80 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ |
81 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) | |
82 | { | |
13d782f6 | 83 | struct net *net = seq->private; |
1da177e4 LT |
84 | int i; |
85 | ||
86 | for (i = 0; sctp_snmp_list[i].name != NULL; i++) | |
87 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, | |
b01a2407 | 88 | snmp_fold_field((void __percpu **)net->sctp.sctp_statistics, |
1da177e4 LT |
89 | sctp_snmp_list[i].entry)); |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | /* Initialize the seq file operations for 'snmp' object. */ | |
95 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
96 | { | |
13d782f6 | 97 | return single_open_net(inode, file, sctp_snmp_seq_show); |
1da177e4 LT |
98 | } |
99 | ||
da7071d7 | 100 | static const struct file_operations sctp_snmp_seq_fops = { |
1da177e4 LT |
101 | .owner = THIS_MODULE, |
102 | .open = sctp_snmp_seq_open, | |
103 | .read = seq_read, | |
104 | .llseek = seq_lseek, | |
0da9a0c2 | 105 | .release = single_release_net, |
1da177e4 LT |
106 | }; |
107 | ||
108 | /* Set up the proc fs entry for 'snmp' object. */ | |
13d782f6 | 109 | int __net_init sctp_snmp_proc_init(struct net *net) |
1da177e4 LT |
110 | { |
111 | struct proc_dir_entry *p; | |
112 | ||
13d782f6 EB |
113 | p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp, |
114 | &sctp_snmp_seq_fops); | |
1da177e4 LT |
115 | if (!p) |
116 | return -ENOMEM; | |
117 | ||
1da177e4 LT |
118 | return 0; |
119 | } | |
120 | ||
121 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
13d782f6 | 122 | void sctp_snmp_proc_exit(struct net *net) |
1da177e4 | 123 | { |
13d782f6 | 124 | remove_proc_entry("snmp", net->sctp.proc_net_sctp); |
1da177e4 LT |
125 | } |
126 | ||
127 | /* Dump local addresses of an association/endpoint. */ | |
128 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
129 | { | |
bca735bd | 130 | struct sctp_association *asoc; |
1da177e4 | 131 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
132 | struct sctp_transport *peer; |
133 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
134 | struct sctp_af *af; |
135 | ||
bca735bd VY |
136 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
137 | asoc = sctp_assoc(epb); | |
138 | peer = asoc->peer.primary_path; | |
5f242a13 | 139 | primary = &peer->saddr; |
bca735bd VY |
140 | } |
141 | ||
0b0fe913 TG |
142 | rcu_read_lock(); |
143 | list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { | |
144 | if (!laddr->valid) | |
145 | continue; | |
146 | ||
5f242a13 | 147 | addr = &laddr->a; |
1da177e4 | 148 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
149 | if (primary && af->cmp_addr(addr, primary)) { |
150 | seq_printf(seq, "*"); | |
151 | } | |
5f242a13 | 152 | af->seq_dump_addr(seq, addr); |
1da177e4 | 153 | } |
0b0fe913 | 154 | rcu_read_unlock(); |
1da177e4 LT |
155 | } |
156 | ||
157 | /* Dump remote addresses of an association. */ | |
158 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
159 | { | |
1da177e4 | 160 | struct sctp_transport *transport; |
bca735bd | 161 | union sctp_addr *addr, *primary; |
1da177e4 LT |
162 | struct sctp_af *af; |
163 | ||
acd2bc96 | 164 | primary = &assoc->peer.primary_addr; |
45122ca2 TG |
165 | rcu_read_lock(); |
166 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, | |
9dbc15f0 | 167 | transports) { |
5f242a13 | 168 | addr = &transport->ipaddr; |
45122ca2 TG |
169 | if (transport->dead) |
170 | continue; | |
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 | 177 | } |
45122ca2 | 178 | rcu_read_unlock(); |
1da177e4 LT |
179 | } |
180 | ||
bca735bd VY |
181 | static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
182 | { | |
49392e5e | 183 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
184 | return NULL; |
185 | ||
186 | if (*pos < 0) | |
187 | *pos = 0; | |
188 | ||
189 | if (*pos == 0) | |
190 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
191 | ||
bca735bd VY |
192 | return (void *)pos; |
193 | } | |
194 | ||
195 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
196 | { | |
bca735bd VY |
197 | } |
198 | ||
199 | ||
200 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
201 | { | |
49392e5e | 202 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
203 | return NULL; |
204 | ||
bca735bd VY |
205 | return pos; |
206 | } | |
207 | ||
208 | ||
1da177e4 LT |
209 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
210 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
211 | { | |
212 | struct sctp_hashbucket *head; | |
213 | struct sctp_ep_common *epb; | |
214 | struct sctp_endpoint *ep; | |
215 | struct sock *sk; | |
38b0e42a | 216 | int hash = *(loff_t *)v; |
bca735bd | 217 | |
49392e5e | 218 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
219 | return -ENOMEM; |
220 | ||
49392e5e | 221 | head = &sctp_ep_hashtable[hash]; |
bca735bd VY |
222 | sctp_local_bh_disable(); |
223 | read_lock(&head->lock); | |
b67bfe0d | 224 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
225 | ep = sctp_ep(epb); |
226 | sk = epb->sk; | |
6932f119 | 227 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 228 | continue; |
71338aa7 | 229 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, |
49392e5e | 230 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 231 | epb->bind_addr.port, |
a7cb5a49 EB |
232 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
233 | sock_i_ino(sk)); | |
bca735bd VY |
234 | |
235 | sctp_seq_dump_local_addrs(seq, epb); | |
236 | seq_printf(seq, "\n"); | |
1da177e4 | 237 | } |
bca735bd VY |
238 | read_unlock(&head->lock); |
239 | sctp_local_bh_enable(); | |
1da177e4 LT |
240 | |
241 | return 0; | |
242 | } | |
243 | ||
56b3d975 | 244 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
245 | .start = sctp_eps_seq_start, |
246 | .next = sctp_eps_seq_next, | |
247 | .stop = sctp_eps_seq_stop, | |
248 | .show = sctp_eps_seq_show, | |
249 | }; | |
250 | ||
251 | ||
1da177e4 LT |
252 | /* Initialize the seq file operations for 'eps' object. */ |
253 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
254 | { | |
13d782f6 EB |
255 | return seq_open_net(inode, file, &sctp_eps_ops, |
256 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
257 | } |
258 | ||
da7071d7 | 259 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
260 | .open = sctp_eps_seq_open, |
261 | .read = seq_read, | |
262 | .llseek = seq_lseek, | |
0da9a0c2 | 263 | .release = seq_release_net, |
1da177e4 LT |
264 | }; |
265 | ||
266 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 267 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
268 | { |
269 | struct proc_dir_entry *p; | |
270 | ||
13d782f6 EB |
271 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
272 | &sctp_eps_seq_fops); | |
1da177e4 LT |
273 | if (!p) |
274 | return -ENOMEM; | |
275 | ||
1da177e4 LT |
276 | return 0; |
277 | } | |
278 | ||
279 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 280 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 281 | { |
13d782f6 | 282 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
283 | } |
284 | ||
bca735bd VY |
285 | |
286 | static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) | |
287 | { | |
49392e5e | 288 | if (*pos >= sctp_assoc_hashsize) |
bca735bd VY |
289 | return NULL; |
290 | ||
291 | if (*pos < 0) | |
292 | *pos = 0; | |
293 | ||
294 | if (*pos == 0) | |
58fbbed4 NH |
295 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
296 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
297 | "RPORT LADDRS <-> RADDRS " | |
298 | "HBINT INS OUTS MAXRT T1X T2X RTXC\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 | ||
308 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
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]; |
bca735bd VY |
329 | sctp_local_bh_disable(); |
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 " |
30e93560 | 338 | "%4d %8d %8d %7d %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); | |
30e93560 NH |
352 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ", |
353 | assoc->hbinterval, assoc->c.sinit_max_instreams, | |
354 | assoc->c.sinit_num_ostreams, assoc->max_retrans, | |
355 | assoc->init_retries, assoc->shutdown_retries, | |
356 | assoc->rtx_data_chunks); | |
bca735bd | 357 | seq_printf(seq, "\n"); |
1da177e4 | 358 | } |
bca735bd VY |
359 | read_unlock(&head->lock); |
360 | sctp_local_bh_enable(); | |
1da177e4 LT |
361 | |
362 | return 0; | |
363 | } | |
364 | ||
56b3d975 | 365 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
366 | .start = sctp_assocs_seq_start, |
367 | .next = sctp_assocs_seq_next, | |
368 | .stop = sctp_assocs_seq_stop, | |
369 | .show = sctp_assocs_seq_show, | |
370 | }; | |
371 | ||
1da177e4 LT |
372 | /* Initialize the seq file operations for 'assocs' object. */ |
373 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
374 | { | |
13d782f6 EB |
375 | return seq_open_net(inode, file, &sctp_assoc_ops, |
376 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
377 | } |
378 | ||
da7071d7 | 379 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
380 | .open = sctp_assocs_seq_open, |
381 | .read = seq_read, | |
382 | .llseek = seq_lseek, | |
0da9a0c2 | 383 | .release = seq_release_net, |
1da177e4 LT |
384 | }; |
385 | ||
386 | /* Set up the proc fs entry for 'assocs' object. */ | |
13d782f6 | 387 | int __net_init sctp_assocs_proc_init(struct net *net) |
1da177e4 LT |
388 | { |
389 | struct proc_dir_entry *p; | |
390 | ||
13d782f6 | 391 | p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, |
459eea74 | 392 | &sctp_assocs_seq_fops); |
1da177e4 LT |
393 | if (!p) |
394 | return -ENOMEM; | |
395 | ||
1da177e4 LT |
396 | return 0; |
397 | } | |
398 | ||
399 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
13d782f6 | 400 | void sctp_assocs_proc_exit(struct net *net) |
1da177e4 | 401 | { |
13d782f6 | 402 | remove_proc_entry("assocs", net->sctp.proc_net_sctp); |
1da177e4 | 403 | } |
20c2c1fd NH |
404 | |
405 | static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos) | |
406 | { | |
407 | if (*pos >= sctp_assoc_hashsize) | |
408 | return NULL; | |
409 | ||
410 | if (*pos < 0) | |
411 | *pos = 0; | |
412 | ||
413 | if (*pos == 0) | |
414 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
415 | "REM_ADDR_RTX START\n"); | |
416 | ||
417 | return (void *)pos; | |
418 | } | |
419 | ||
420 | static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
421 | { | |
422 | if (++*pos >= sctp_assoc_hashsize) | |
423 | return NULL; | |
424 | ||
425 | return pos; | |
426 | } | |
427 | ||
428 | static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) | |
429 | { | |
20c2c1fd NH |
430 | } |
431 | ||
432 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) | |
433 | { | |
434 | struct sctp_hashbucket *head; | |
435 | struct sctp_ep_common *epb; | |
436 | struct sctp_association *assoc; | |
20c2c1fd NH |
437 | struct sctp_transport *tsp; |
438 | int hash = *(loff_t *)v; | |
439 | ||
440 | if (hash >= sctp_assoc_hashsize) | |
441 | return -ENOMEM; | |
442 | ||
443 | head = &sctp_assoc_hashtable[hash]; | |
444 | sctp_local_bh_disable(); | |
445 | read_lock(&head->lock); | |
45122ca2 | 446 | rcu_read_lock(); |
b67bfe0d | 447 | sctp_for_each_hentry(epb, &head->chain) { |
6932f119 | 448 | if (!net_eq(sock_net(epb->sk), seq_file_net(seq))) |
13d782f6 | 449 | continue; |
20c2c1fd | 450 | assoc = sctp_assoc(epb); |
45122ca2 | 451 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, |
20c2c1fd | 452 | transports) { |
45122ca2 TG |
453 | if (tsp->dead) |
454 | continue; | |
455 | ||
20c2c1fd NH |
456 | /* |
457 | * The remote address (ADDR) | |
458 | */ | |
459 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
460 | seq_printf(seq, " "); | |
461 | ||
462 | /* | |
463 | * The association ID (ASSOC_ID) | |
464 | */ | |
465 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); | |
466 | ||
467 | /* | |
468 | * If the Heartbeat is active (HB_ACT) | |
469 | * Note: 1 = Active, 0 = Inactive | |
470 | */ | |
471 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); | |
472 | ||
473 | /* | |
474 | * Retransmit time out (RTO) | |
475 | */ | |
476 | seq_printf(seq, "%lu ", tsp->rto); | |
477 | ||
478 | /* | |
479 | * Maximum path retransmit count (PATH_MAX_RTX) | |
480 | */ | |
481 | seq_printf(seq, "%d ", tsp->pathmaxrxt); | |
482 | ||
483 | /* | |
484 | * remote address retransmit count (REM_ADDR_RTX) | |
485 | * Note: We don't have a way to tally this at the moment | |
486 | * so lets just leave it as zero for the moment | |
487 | */ | |
488 | seq_printf(seq, "0 "); | |
489 | ||
490 | /* | |
491 | * remote address start time (START). This is also not | |
492 | * currently implemented, but we can record it with a | |
493 | * jiffies marker in a subsequent patch | |
494 | */ | |
495 | seq_printf(seq, "0"); | |
496 | ||
497 | seq_printf(seq, "\n"); | |
498 | } | |
499 | } | |
500 | ||
45122ca2 | 501 | rcu_read_unlock(); |
20c2c1fd NH |
502 | read_unlock(&head->lock); |
503 | sctp_local_bh_enable(); | |
504 | ||
505 | return 0; | |
506 | ||
507 | } | |
508 | ||
509 | static const struct seq_operations sctp_remaddr_ops = { | |
510 | .start = sctp_remaddr_seq_start, | |
511 | .next = sctp_remaddr_seq_next, | |
512 | .stop = sctp_remaddr_seq_stop, | |
513 | .show = sctp_remaddr_seq_show, | |
514 | }; | |
515 | ||
516 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
13d782f6 | 517 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 518 | { |
13d782f6 | 519 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
520 | } |
521 | ||
522 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
523 | { | |
13d782f6 EB |
524 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
525 | sizeof(struct seq_net_private)); | |
20c2c1fd NH |
526 | } |
527 | ||
528 | static const struct file_operations sctp_remaddr_seq_fops = { | |
529 | .open = sctp_remaddr_seq_open, | |
530 | .read = seq_read, | |
531 | .llseek = seq_lseek, | |
0da9a0c2 | 532 | .release = seq_release_net, |
20c2c1fd NH |
533 | }; |
534 | ||
13d782f6 | 535 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
536 | { |
537 | struct proc_dir_entry *p; | |
538 | ||
13d782f6 EB |
539 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
540 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
541 | if (!p) |
542 | return -ENOMEM; | |
20c2c1fd NH |
543 | return 0; |
544 | } |