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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* SCTP kernel reference Implementation
2 * Copyright (c) 2003 International Business Machines, Corp.
3 *
4 * This file is part of the SCTP kernel reference Implementation
5 *
6 * The SCTP reference implementation is free software;
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 *
12 * The SCTP reference implementation is distributed in the hope that it
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>
40#include <net/sctp/sctp.h>
41
42static struct snmp_mib sctp_snmp_list[] = {
43 SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
44 SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
45 SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
46 SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
47 SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
48 SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
49 SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
50 SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
51 SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
52 SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
53 SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
54 SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
55 SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
56 SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
57 SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
58 SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
59 SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
Sridhar Samudralaac0b0462006-08-22 00:15:33 -070060 SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
61 SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
62 SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
63 SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
64 SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
65 SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
66 SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
67 SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
68 SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
69 SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
70 SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
71 SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
72 SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
73 SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
74 SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
Vlad Yasevichd2287f82005-08-23 10:12:04 -070075 SNMP_MIB_SENTINEL
Linus Torvalds1da177e2005-04-16 15:20:36 -070076};
77
78/* Return the current value of a particular entry in the mib by adding its
79 * per cpu counters.
YOSHIFUJI Hideakid808ad92007-02-09 23:25:18 +090080 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070081static unsigned long
82fold_field(void *mib[], int nr)
83{
84 unsigned long res = 0;
85 int i;
86
KAMEZAWA Hiroyuki6f912042006-04-10 22:52:50 -070087 for_each_possible_cpu(i) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 res +=
89 *((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) +
90 sizeof (unsigned long) * nr));
91 res +=
92 *((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) +
93 sizeof (unsigned long) * nr));
94 }
95 return res;
96}
97
98/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
99static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
100{
101 int i;
102
103 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
104 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
YOSHIFUJI Hideakid808ad92007-02-09 23:25:18 +0900105 fold_field((void **)sctp_statistics,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 sctp_snmp_list[i].entry));
107
108 return 0;
109}
110
111/* Initialize the seq file operations for 'snmp' object. */
112static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
113{
114 return single_open(file, sctp_snmp_seq_show, NULL);
115}
116
Arjan van de Venda7071d2007-02-12 00:55:36 -0800117static const struct file_operations sctp_snmp_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 .owner = THIS_MODULE,
119 .open = sctp_snmp_seq_open,
120 .read = seq_read,
121 .llseek = seq_lseek,
122 .release = single_release,
123};
124
125/* Set up the proc fs entry for 'snmp' object. */
126int __init sctp_snmp_proc_init(void)
127{
128 struct proc_dir_entry *p;
129
130 p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp);
131 if (!p)
132 return -ENOMEM;
133
134 p->proc_fops = &sctp_snmp_seq_fops;
135
136 return 0;
137}
138
139/* Cleanup the proc fs entry for 'snmp' object. */
140void sctp_snmp_proc_exit(void)
141{
142 remove_proc_entry("snmp", proc_net_sctp);
143}
144
145/* Dump local addresses of an association/endpoint. */
146static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
147{
148 struct list_head *pos;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700149 struct sctp_association *asoc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 struct sctp_sockaddr_entry *laddr;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700151 struct sctp_transport *peer;
152 union sctp_addr *addr, *primary = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 struct sctp_af *af;
154
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700155 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
156 asoc = sctp_assoc(epb);
157 peer = asoc->peer.primary_path;
Al Viro5f242a12006-11-20 17:05:23 -0800158 primary = &peer->saddr;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700159 }
160
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 list_for_each(pos, &epb->bind_addr.address_list) {
162 laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
Al Viro5f242a12006-11-20 17:05:23 -0800163 addr = &laddr->a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 af = sctp_get_af_specific(addr->sa.sa_family);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700165 if (primary && af->cmp_addr(addr, primary)) {
166 seq_printf(seq, "*");
167 }
Al Viro5f242a12006-11-20 17:05:23 -0800168 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 }
170}
171
172/* Dump remote addresses of an association. */
173static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
174{
175 struct list_head *pos;
176 struct sctp_transport *transport;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700177 union sctp_addr *addr, *primary;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 struct sctp_af *af;
179
Al Viroacd2bc92006-11-20 17:06:04 -0800180 primary = &assoc->peer.primary_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 list_for_each(pos, &assoc->peer.transport_addr_list) {
182 transport = list_entry(pos, struct sctp_transport, transports);
Al Viro5f242a12006-11-20 17:05:23 -0800183 addr = &transport->ipaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 af = sctp_get_af_specific(addr->sa.sa_family);
Al Viroacd2bc92006-11-20 17:06:04 -0800185 if (af->cmp_addr(addr, primary)) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700186 seq_printf(seq, "*");
187 }
Al Viro5f242a12006-11-20 17:05:23 -0800188 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 }
190}
191
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700192static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
193{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800194 if (*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700195 return NULL;
196
197 if (*pos < 0)
198 *pos = 0;
199
200 if (*pos == 0)
201 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
202
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700203 return (void *)pos;
204}
205
206static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
207{
208 return;
209}
210
211
212static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
213{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800214 if (++*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700215 return NULL;
216
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700217 return pos;
218}
219
220
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221/* Display sctp endpoints (/proc/net/sctp/eps). */
222static int sctp_eps_seq_show(struct seq_file *seq, void *v)
223{
224 struct sctp_hashbucket *head;
225 struct sctp_ep_common *epb;
226 struct sctp_endpoint *ep;
227 struct sock *sk;
Vlad Yasevichd970dbf2007-11-09 11:43:40 -0500228 struct hlist_node *node;
Vlad Yasevich38b0e422006-01-17 11:54:06 -0800229 int hash = *(loff_t *)v;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230
Vlad Yasevich49392e52006-01-17 11:53:06 -0800231 if (hash >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700232 return -ENOMEM;
233
Vlad Yasevich49392e52006-01-17 11:53:06 -0800234 head = &sctp_ep_hashtable[hash];
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700235 sctp_local_bh_disable();
236 read_lock(&head->lock);
Vlad Yasevichd970dbf2007-11-09 11:43:40 -0500237 sctp_for_each_hentry(epb, node, &head->chain) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700238 ep = sctp_ep(epb);
239 sk = epb->sk;
240 seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
Vlad Yasevich49392e52006-01-17 11:53:06 -0800241 sctp_sk(sk)->type, sk->sk_state, hash,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700242 epb->bind_addr.port,
243 sock_i_uid(sk), sock_i_ino(sk));
244
245 sctp_seq_dump_local_addrs(seq, epb);
246 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700248 read_unlock(&head->lock);
249 sctp_local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
251 return 0;
252}
253
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700254static const struct seq_operations sctp_eps_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700255 .start = sctp_eps_seq_start,
256 .next = sctp_eps_seq_next,
257 .stop = sctp_eps_seq_stop,
258 .show = sctp_eps_seq_show,
259};
260
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262/* Initialize the seq file operations for 'eps' object. */
263static int sctp_eps_seq_open(struct inode *inode, struct file *file)
264{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700265 return seq_open(file, &sctp_eps_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266}
267
Arjan van de Venda7071d2007-02-12 00:55:36 -0800268static const struct file_operations sctp_eps_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 .open = sctp_eps_seq_open,
270 .read = seq_read,
271 .llseek = seq_lseek,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700272 .release = seq_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273};
274
275/* Set up the proc fs entry for 'eps' object. */
276int __init sctp_eps_proc_init(void)
277{
278 struct proc_dir_entry *p;
279
280 p = create_proc_entry("eps", S_IRUGO, proc_net_sctp);
281 if (!p)
282 return -ENOMEM;
283
284 p->proc_fops = &sctp_eps_seq_fops;
285
286 return 0;
287}
288
289/* Cleanup the proc fs entry for 'eps' object. */
290void sctp_eps_proc_exit(void)
291{
292 remove_proc_entry("eps", proc_net_sctp);
293}
294
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700295
296static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
297{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800298 if (*pos >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700299 return NULL;
300
301 if (*pos < 0)
302 *pos = 0;
303
304 if (*pos == 0)
305 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
306 "RPORT LADDRS <-> RADDRS\n");
307
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700308 return (void *)pos;
309}
310
311static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
312{
313 return;
314}
315
316
317static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
318{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800319 if (++*pos >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700320 return NULL;
321
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700322 return pos;
323}
324
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325/* Display sctp associations (/proc/net/sctp/assocs). */
326static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
327{
328 struct sctp_hashbucket *head;
329 struct sctp_ep_common *epb;
330 struct sctp_association *assoc;
331 struct sock *sk;
Vlad Yasevichd970dbf2007-11-09 11:43:40 -0500332 struct hlist_node *node;
Vlad Yasevich38b0e422006-01-17 11:54:06 -0800333 int hash = *(loff_t *)v;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
Vlad Yasevich49392e52006-01-17 11:53:06 -0800335 if (hash >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700336 return -ENOMEM;
337
Vlad Yasevich49392e52006-01-17 11:53:06 -0800338 head = &sctp_assoc_hashtable[hash];
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700339 sctp_local_bh_disable();
340 read_lock(&head->lock);
Vlad Yasevichd970dbf2007-11-09 11:43:40 -0500341 sctp_for_each_hentry(epb, node, &head->chain) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700342 assoc = sctp_assoc(epb);
343 sk = epb->sk;
344 seq_printf(seq,
345 "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
346 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
Vlad Yasevich49392e52006-01-17 11:53:06 -0800347 assoc->state, hash, assoc->assoc_id,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700348 assoc->sndbuf_used,
Vlad Yasevich6aa25512006-10-09 21:34:26 -0700349 atomic_read(&assoc->rmem_alloc),
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700350 sock_i_uid(sk), sock_i_ino(sk),
351 epb->bind_addr.port,
352 assoc->peer.port);
353
354 seq_printf(seq, " ");
355 sctp_seq_dump_local_addrs(seq, epb);
356 seq_printf(seq, "<-> ");
357 sctp_seq_dump_remote_addrs(seq, assoc);
358 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700360 read_unlock(&head->lock);
361 sctp_local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
363 return 0;
364}
365
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700366static const struct seq_operations sctp_assoc_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700367 .start = sctp_assocs_seq_start,
368 .next = sctp_assocs_seq_next,
369 .stop = sctp_assocs_seq_stop,
370 .show = sctp_assocs_seq_show,
371};
372
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373/* Initialize the seq file operations for 'assocs' object. */
374static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
375{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700376 return seq_open(file, &sctp_assoc_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377}
378
Arjan van de Venda7071d2007-02-12 00:55:36 -0800379static const struct file_operations sctp_assocs_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 .open = sctp_assocs_seq_open,
381 .read = seq_read,
382 .llseek = seq_lseek,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700383 .release = seq_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384};
385
386/* Set up the proc fs entry for 'assocs' object. */
387int __init sctp_assocs_proc_init(void)
388{
389 struct proc_dir_entry *p;
390
391 p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp);
392 if (!p)
393 return -ENOMEM;
394
395 p->proc_fops = &sctp_assocs_seq_fops;
396
397 return 0;
398}
399
400/* Cleanup the proc fs entry for 'assocs' object. */
401void sctp_assocs_proc_exit(void)
402{
403 remove_proc_entry("assocs", proc_net_sctp);
404}