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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 | 136 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
f9e42b85 DB |
137 | asoc = sctp_assoc(epb); |
138 | ||
139 | peer = asoc->peer.primary_path; | |
140 | if (unlikely(peer == NULL)) { | |
b527fe69 | 141 | WARN(1, "Association %p with NULL primary path!\n", asoc); |
f9e42b85 DB |
142 | return; |
143 | } | |
144 | ||
145 | primary = &peer->saddr; | |
bca735bd VY |
146 | } |
147 | ||
0b0fe913 TG |
148 | rcu_read_lock(); |
149 | list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) { | |
150 | if (!laddr->valid) | |
151 | continue; | |
152 | ||
5f242a13 | 153 | addr = &laddr->a; |
1da177e4 | 154 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
155 | if (primary && af->cmp_addr(addr, primary)) { |
156 | seq_printf(seq, "*"); | |
157 | } | |
5f242a13 | 158 | af->seq_dump_addr(seq, addr); |
1da177e4 | 159 | } |
0b0fe913 | 160 | rcu_read_unlock(); |
1da177e4 LT |
161 | } |
162 | ||
163 | /* Dump remote addresses of an association. */ | |
164 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
165 | { | |
1da177e4 | 166 | struct sctp_transport *transport; |
bca735bd | 167 | union sctp_addr *addr, *primary; |
1da177e4 LT |
168 | struct sctp_af *af; |
169 | ||
acd2bc96 | 170 | primary = &assoc->peer.primary_addr; |
45122ca2 TG |
171 | rcu_read_lock(); |
172 | list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list, | |
9dbc15f0 | 173 | transports) { |
5f242a13 | 174 | addr = &transport->ipaddr; |
45122ca2 TG |
175 | if (transport->dead) |
176 | continue; | |
177 | ||
1da177e4 | 178 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 179 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
180 | seq_printf(seq, "*"); |
181 | } | |
5f242a13 | 182 | af->seq_dump_addr(seq, addr); |
1da177e4 | 183 | } |
45122ca2 | 184 | rcu_read_unlock(); |
1da177e4 LT |
185 | } |
186 | ||
bca735bd VY |
187 | static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
188 | { | |
49392e5e | 189 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
190 | return NULL; |
191 | ||
192 | if (*pos < 0) | |
193 | *pos = 0; | |
194 | ||
195 | if (*pos == 0) | |
196 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
197 | ||
bca735bd VY |
198 | return (void *)pos; |
199 | } | |
200 | ||
201 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
202 | { | |
bca735bd VY |
203 | } |
204 | ||
205 | ||
206 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
207 | { | |
49392e5e | 208 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
209 | return NULL; |
210 | ||
bca735bd VY |
211 | return pos; |
212 | } | |
213 | ||
214 | ||
1da177e4 LT |
215 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
216 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
217 | { | |
218 | struct sctp_hashbucket *head; | |
219 | struct sctp_ep_common *epb; | |
220 | struct sctp_endpoint *ep; | |
221 | struct sock *sk; | |
38b0e42a | 222 | int hash = *(loff_t *)v; |
bca735bd | 223 | |
49392e5e | 224 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
225 | return -ENOMEM; |
226 | ||
49392e5e | 227 | head = &sctp_ep_hashtable[hash]; |
bca735bd VY |
228 | sctp_local_bh_disable(); |
229 | read_lock(&head->lock); | |
b67bfe0d | 230 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
231 | ep = sctp_ep(epb); |
232 | sk = epb->sk; | |
6932f119 | 233 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 234 | continue; |
71338aa7 | 235 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, |
49392e5e | 236 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 237 | epb->bind_addr.port, |
a7cb5a49 EB |
238 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
239 | sock_i_ino(sk)); | |
bca735bd VY |
240 | |
241 | sctp_seq_dump_local_addrs(seq, epb); | |
242 | seq_printf(seq, "\n"); | |
1da177e4 | 243 | } |
bca735bd VY |
244 | read_unlock(&head->lock); |
245 | sctp_local_bh_enable(); | |
1da177e4 LT |
246 | |
247 | return 0; | |
248 | } | |
249 | ||
56b3d975 | 250 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
251 | .start = sctp_eps_seq_start, |
252 | .next = sctp_eps_seq_next, | |
253 | .stop = sctp_eps_seq_stop, | |
254 | .show = sctp_eps_seq_show, | |
255 | }; | |
256 | ||
257 | ||
1da177e4 LT |
258 | /* Initialize the seq file operations for 'eps' object. */ |
259 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
260 | { | |
13d782f6 EB |
261 | return seq_open_net(inode, file, &sctp_eps_ops, |
262 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
263 | } |
264 | ||
da7071d7 | 265 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
266 | .open = sctp_eps_seq_open, |
267 | .read = seq_read, | |
268 | .llseek = seq_lseek, | |
0da9a0c2 | 269 | .release = seq_release_net, |
1da177e4 LT |
270 | }; |
271 | ||
272 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 273 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
274 | { |
275 | struct proc_dir_entry *p; | |
276 | ||
13d782f6 EB |
277 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
278 | &sctp_eps_seq_fops); | |
1da177e4 LT |
279 | if (!p) |
280 | return -ENOMEM; | |
281 | ||
1da177e4 LT |
282 | return 0; |
283 | } | |
284 | ||
285 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 286 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 287 | { |
13d782f6 | 288 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
289 | } |
290 | ||
bca735bd VY |
291 | |
292 | static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) | |
293 | { | |
49392e5e | 294 | if (*pos >= sctp_assoc_hashsize) |
bca735bd VY |
295 | return NULL; |
296 | ||
297 | if (*pos < 0) | |
298 | *pos = 0; | |
299 | ||
300 | if (*pos == 0) | |
58fbbed4 NH |
301 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
302 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
303 | "RPORT LADDRS <-> RADDRS " | |
f406c8b9 DD |
304 | "HBINT INS OUTS MAXRT T1X T2X RTXC " |
305 | "wmema wmemq sndbuf rcvbuf\n"); | |
bca735bd | 306 | |
bca735bd VY |
307 | return (void *)pos; |
308 | } | |
309 | ||
310 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
311 | { | |
bca735bd VY |
312 | } |
313 | ||
314 | ||
315 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
316 | { | |
49392e5e | 317 | if (++*pos >= sctp_assoc_hashsize) |
bca735bd VY |
318 | return NULL; |
319 | ||
bca735bd VY |
320 | return pos; |
321 | } | |
322 | ||
1da177e4 LT |
323 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
324 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
325 | { | |
326 | struct sctp_hashbucket *head; | |
327 | struct sctp_ep_common *epb; | |
328 | struct sctp_association *assoc; | |
329 | struct sock *sk; | |
38b0e42a | 330 | int hash = *(loff_t *)v; |
bca735bd | 331 | |
49392e5e | 332 | if (hash >= sctp_assoc_hashsize) |
bca735bd VY |
333 | return -ENOMEM; |
334 | ||
49392e5e | 335 | head = &sctp_assoc_hashtable[hash]; |
bca735bd VY |
336 | sctp_local_bh_disable(); |
337 | read_lock(&head->lock); | |
b67bfe0d | 338 | sctp_for_each_hentry(epb, &head->chain) { |
bca735bd VY |
339 | assoc = sctp_assoc(epb); |
340 | sk = epb->sk; | |
6932f119 | 341 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 342 | continue; |
bca735bd | 343 | seq_printf(seq, |
71338aa7 | 344 | "%8pK %8pK %-3d %-3d %-2d %-4d " |
30e93560 | 345 | "%4d %8d %8d %7d %5lu %-5d %5d ", |
bca735bd | 346 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, |
58fbbed4 NH |
347 | assoc->state, hash, |
348 | assoc->assoc_id, | |
bca735bd | 349 | assoc->sndbuf_used, |
6aa2551c | 350 | atomic_read(&assoc->rmem_alloc), |
a7cb5a49 EB |
351 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
352 | sock_i_ino(sk), | |
bca735bd | 353 | epb->bind_addr.port, |
30e93560 | 354 | assoc->peer.port); |
bca735bd VY |
355 | seq_printf(seq, " "); |
356 | sctp_seq_dump_local_addrs(seq, epb); | |
357 | seq_printf(seq, "<-> "); | |
358 | sctp_seq_dump_remote_addrs(seq, assoc); | |
f406c8b9 DD |
359 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d " |
360 | "%8d %8d %8d %8d", | |
30e93560 NH |
361 | assoc->hbinterval, assoc->c.sinit_max_instreams, |
362 | assoc->c.sinit_num_ostreams, assoc->max_retrans, | |
363 | assoc->init_retries, assoc->shutdown_retries, | |
f406c8b9 DD |
364 | assoc->rtx_data_chunks, |
365 | atomic_read(&sk->sk_wmem_alloc), | |
366 | sk->sk_wmem_queued, | |
367 | sk->sk_sndbuf, | |
368 | sk->sk_rcvbuf); | |
bca735bd | 369 | seq_printf(seq, "\n"); |
1da177e4 | 370 | } |
bca735bd VY |
371 | read_unlock(&head->lock); |
372 | sctp_local_bh_enable(); | |
1da177e4 LT |
373 | |
374 | return 0; | |
375 | } | |
376 | ||
56b3d975 | 377 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
378 | .start = sctp_assocs_seq_start, |
379 | .next = sctp_assocs_seq_next, | |
380 | .stop = sctp_assocs_seq_stop, | |
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 EB |
387 | return seq_open_net(inode, file, &sctp_assoc_ops, |
388 | sizeof(struct seq_net_private)); | |
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 NH |
416 | |
417 | static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos) | |
418 | { | |
419 | if (*pos >= sctp_assoc_hashsize) | |
420 | return NULL; | |
421 | ||
422 | if (*pos < 0) | |
423 | *pos = 0; | |
424 | ||
425 | if (*pos == 0) | |
426 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
427 | "REM_ADDR_RTX START\n"); | |
428 | ||
429 | return (void *)pos; | |
430 | } | |
431 | ||
432 | static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
433 | { | |
434 | if (++*pos >= sctp_assoc_hashsize) | |
435 | return NULL; | |
436 | ||
437 | return pos; | |
438 | } | |
439 | ||
440 | static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) | |
441 | { | |
20c2c1fd NH |
442 | } |
443 | ||
444 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) | |
445 | { | |
446 | struct sctp_hashbucket *head; | |
447 | struct sctp_ep_common *epb; | |
448 | struct sctp_association *assoc; | |
20c2c1fd NH |
449 | struct sctp_transport *tsp; |
450 | int hash = *(loff_t *)v; | |
451 | ||
452 | if (hash >= sctp_assoc_hashsize) | |
453 | return -ENOMEM; | |
454 | ||
455 | head = &sctp_assoc_hashtable[hash]; | |
456 | sctp_local_bh_disable(); | |
457 | read_lock(&head->lock); | |
45122ca2 | 458 | rcu_read_lock(); |
b67bfe0d | 459 | sctp_for_each_hentry(epb, &head->chain) { |
6932f119 | 460 | if (!net_eq(sock_net(epb->sk), seq_file_net(seq))) |
13d782f6 | 461 | continue; |
20c2c1fd | 462 | assoc = sctp_assoc(epb); |
45122ca2 | 463 | list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list, |
20c2c1fd | 464 | transports) { |
45122ca2 TG |
465 | if (tsp->dead) |
466 | continue; | |
467 | ||
20c2c1fd NH |
468 | /* |
469 | * The remote address (ADDR) | |
470 | */ | |
471 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
472 | seq_printf(seq, " "); | |
473 | ||
474 | /* | |
475 | * The association ID (ASSOC_ID) | |
476 | */ | |
477 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); | |
478 | ||
479 | /* | |
480 | * If the Heartbeat is active (HB_ACT) | |
481 | * Note: 1 = Active, 0 = Inactive | |
482 | */ | |
483 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); | |
484 | ||
485 | /* | |
486 | * Retransmit time out (RTO) | |
487 | */ | |
488 | seq_printf(seq, "%lu ", tsp->rto); | |
489 | ||
490 | /* | |
491 | * Maximum path retransmit count (PATH_MAX_RTX) | |
492 | */ | |
493 | seq_printf(seq, "%d ", tsp->pathmaxrxt); | |
494 | ||
495 | /* | |
496 | * remote address retransmit count (REM_ADDR_RTX) | |
497 | * Note: We don't have a way to tally this at the moment | |
498 | * so lets just leave it as zero for the moment | |
499 | */ | |
500 | seq_printf(seq, "0 "); | |
501 | ||
502 | /* | |
503 | * remote address start time (START). This is also not | |
504 | * currently implemented, but we can record it with a | |
505 | * jiffies marker in a subsequent patch | |
506 | */ | |
507 | seq_printf(seq, "0"); | |
508 | ||
509 | seq_printf(seq, "\n"); | |
510 | } | |
511 | } | |
512 | ||
45122ca2 | 513 | rcu_read_unlock(); |
20c2c1fd NH |
514 | read_unlock(&head->lock); |
515 | sctp_local_bh_enable(); | |
516 | ||
517 | return 0; | |
518 | ||
519 | } | |
520 | ||
521 | static const struct seq_operations sctp_remaddr_ops = { | |
522 | .start = sctp_remaddr_seq_start, | |
523 | .next = sctp_remaddr_seq_next, | |
524 | .stop = sctp_remaddr_seq_stop, | |
525 | .show = sctp_remaddr_seq_show, | |
526 | }; | |
527 | ||
528 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
13d782f6 | 529 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 530 | { |
13d782f6 | 531 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
532 | } |
533 | ||
534 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
535 | { | |
13d782f6 EB |
536 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
537 | sizeof(struct seq_net_private)); | |
20c2c1fd NH |
538 | } |
539 | ||
540 | static const struct file_operations sctp_remaddr_seq_fops = { | |
541 | .open = sctp_remaddr_seq_open, | |
542 | .read = seq_read, | |
543 | .llseek = seq_lseek, | |
0da9a0c2 | 544 | .release = seq_release_net, |
20c2c1fd NH |
545 | }; |
546 | ||
13d782f6 | 547 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
548 | { |
549 | struct proc_dir_entry *p; | |
550 | ||
13d782f6 EB |
551 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
552 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
553 | if (!p) |
554 | return -ENOMEM; | |
20c2c1fd NH |
555 | return 0; |
556 | } |