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Vlad Yasevich60c778b2008-01-11 09:57:09 -05001/* SCTP kernel implementation
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (c) 2003 International Business Machines, Corp.
3 *
Vlad Yasevich60c778b2008-01-11 09:57:09 -05004 * This file is part of the SCTP kernel implementation
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
Vlad Yasevich60c778b2008-01-11 09:57:09 -05006 * This SCTP implementation is free software;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * 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 *
Vlad Yasevich60c778b2008-01-11 09:57:09 -050012 * This SCTP implementation is distributed in the hope that it
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 * 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>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040040#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include <net/sctp/sctp.h>
Pavel Emelyanov3f5340a2008-02-09 23:23:44 -080042#include <net/ip.h> /* for snmp_fold_field */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Alexey Dobriyan58339292010-01-22 10:17:26 +000044static const struct snmp_mib sctp_snmp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 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),
Sridhar Samudralaac0b0462006-08-22 00:15:33 -070062 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),
Vlad Yasevichd2287f82005-08-23 10:12:04 -070077 SNMP_MIB_SENTINEL
Linus Torvalds1da177e2005-04-16 15:20:36 -070078};
79
Linus Torvalds1da177e2005-04-16 15:20:36 -070080/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
81static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
82{
Eric W. Biederman13d782f2012-08-06 08:45:15 +000083 struct net *net = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 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,
Eric W. Biedermanb01a2402012-08-06 08:47:55 +000088 snmp_fold_field((void __percpu **)net->sctp.sctp_statistics,
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 sctp_snmp_list[i].entry));
90
91 return 0;
92}
93
94/* Initialize the seq file operations for 'snmp' object. */
95static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
96{
Eric W. Biederman13d782f2012-08-06 08:45:15 +000097 return single_open_net(inode, file, sctp_snmp_seq_show);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098}
99
Arjan van de Venda7071d2007-02-12 00:55:36 -0800100static const struct file_operations sctp_snmp_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 .owner = THIS_MODULE,
102 .open = sctp_snmp_seq_open,
103 .read = seq_read,
104 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000105 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106};
107
108/* Set up the proc fs entry for 'snmp' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000109int __net_init sctp_snmp_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
111 struct proc_dir_entry *p;
112
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000113 p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
114 &sctp_snmp_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 if (!p)
116 return -ENOMEM;
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 return 0;
119}
120
121/* Cleanup the proc fs entry for 'snmp' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000122void sctp_snmp_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000124 remove_proc_entry("snmp", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125}
126
127/* Dump local addresses of an association/endpoint. */
128static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
129{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700130 struct sctp_association *asoc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 struct sctp_sockaddr_entry *laddr;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700132 struct sctp_transport *peer;
133 union sctp_addr *addr, *primary = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 struct sctp_af *af;
135
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700136 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
137 asoc = sctp_assoc(epb);
138 peer = asoc->peer.primary_path;
Al Viro5f242a12006-11-20 17:05:23 -0800139 primary = &peer->saddr;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700140 }
141
Thomas Graf0b0fe912012-12-06 09:25:04 +0000142 rcu_read_lock();
143 list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
144 if (!laddr->valid)
145 continue;
146
Al Viro5f242a12006-11-20 17:05:23 -0800147 addr = &laddr->a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 af = sctp_get_af_specific(addr->sa.sa_family);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700149 if (primary && af->cmp_addr(addr, primary)) {
150 seq_printf(seq, "*");
151 }
Al Viro5f242a12006-11-20 17:05:23 -0800152 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 }
Thomas Graf0b0fe912012-12-06 09:25:04 +0000154 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155}
156
157/* Dump remote addresses of an association. */
158static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
159{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 struct sctp_transport *transport;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700161 union sctp_addr *addr, *primary;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 struct sctp_af *af;
163
Al Viroacd2bc92006-11-20 17:06:04 -0800164 primary = &assoc->peer.primary_addr;
Thomas Graf45122ca262012-12-06 09:25:05 +0000165 rcu_read_lock();
166 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
Robert P. J. Day9dbc15f2008-04-12 18:54:24 -0700167 transports) {
Al Viro5f242a12006-11-20 17:05:23 -0800168 addr = &transport->ipaddr;
Thomas Graf45122ca262012-12-06 09:25:05 +0000169 if (transport->dead)
170 continue;
171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 af = sctp_get_af_specific(addr->sa.sa_family);
Al Viroacd2bc92006-11-20 17:06:04 -0800173 if (af->cmp_addr(addr, primary)) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700174 seq_printf(seq, "*");
175 }
Al Viro5f242a12006-11-20 17:05:23 -0800176 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 }
Thomas Graf45122ca262012-12-06 09:25:05 +0000178 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179}
180
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700181static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
182{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800183 if (*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700184 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
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700192 return (void *)pos;
193}
194
195static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
196{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700197}
198
199
200static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
201{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800202 if (++*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700203 return NULL;
204
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700205 return pos;
206}
207
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209/* Display sctp endpoints (/proc/net/sctp/eps). */
210static 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;
Vlad Yasevich38b0e422006-01-17 11:54:06 -0800216 int hash = *(loff_t *)v;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
Vlad Yasevich49392e52006-01-17 11:53:06 -0800218 if (hash >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700219 return -ENOMEM;
220
Vlad Yasevich49392e52006-01-17 11:53:06 -0800221 head = &sctp_ep_hashtable[hash];
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700222 sctp_local_bh_disable();
223 read_lock(&head->lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800224 sctp_for_each_hentry(epb, &head->chain) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700225 ep = sctp_ep(epb);
226 sk = epb->sk;
Ulrich Weber6932f112012-08-16 01:24:49 +0000227 if (!net_eq(sock_net(sk), seq_file_net(seq)))
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000228 continue;
Dan Rosenberg71338aa2011-05-23 12:17:35 +0000229 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
Vlad Yasevich49392e52006-01-17 11:53:06 -0800230 sctp_sk(sk)->type, sk->sk_state, hash,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700231 epb->bind_addr.port,
Eric W. Biedermana7cb5a42012-05-24 01:10:10 -0600232 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
233 sock_i_ino(sk));
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700234
235 sctp_seq_dump_local_addrs(seq, epb);
236 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700238 read_unlock(&head->lock);
239 sctp_local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
241 return 0;
242}
243
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700244static const struct seq_operations sctp_eps_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700245 .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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252/* Initialize the seq file operations for 'eps' object. */
253static int sctp_eps_seq_open(struct inode *inode, struct file *file)
254{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000255 return seq_open_net(inode, file, &sctp_eps_ops,
256 sizeof(struct seq_net_private));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257}
258
Arjan van de Venda7071d2007-02-12 00:55:36 -0800259static const struct file_operations sctp_eps_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 .open = sctp_eps_seq_open,
261 .read = seq_read,
262 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000263 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264};
265
266/* Set up the proc fs entry for 'eps' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000267int __net_init sctp_eps_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
269 struct proc_dir_entry *p;
270
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000271 p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
272 &sctp_eps_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 if (!p)
274 return -ENOMEM;
275
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 return 0;
277}
278
279/* Cleanup the proc fs entry for 'eps' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000280void sctp_eps_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000282 remove_proc_entry("eps", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283}
284
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700285
286static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
287{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800288 if (*pos >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700289 return NULL;
290
291 if (*pos < 0)
292 *pos = 0;
293
294 if (*pos == 0)
Neil Horman58fbbed2008-02-29 11:40:56 -0800295 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");
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700299
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700300 return (void *)pos;
301}
302
303static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
304{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700305}
306
307
308static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
309{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800310 if (++*pos >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700311 return NULL;
312
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700313 return pos;
314}
315
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316/* Display sctp associations (/proc/net/sctp/assocs). */
317static 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;
Vlad Yasevich38b0e422006-01-17 11:54:06 -0800323 int hash = *(loff_t *)v;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
Vlad Yasevich49392e52006-01-17 11:53:06 -0800325 if (hash >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700326 return -ENOMEM;
327
Vlad Yasevich49392e52006-01-17 11:53:06 -0800328 head = &sctp_assoc_hashtable[hash];
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700329 sctp_local_bh_disable();
330 read_lock(&head->lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800331 sctp_for_each_hentry(epb, &head->chain) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700332 assoc = sctp_assoc(epb);
333 sk = epb->sk;
Ulrich Weber6932f112012-08-16 01:24:49 +0000334 if (!net_eq(sock_net(sk), seq_file_net(seq)))
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000335 continue;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700336 seq_printf(seq,
Dan Rosenberg71338aa2011-05-23 12:17:35 +0000337 "%8pK %8pK %-3d %-3d %-2d %-4d "
Neil Horman30e93562008-04-12 18:53:48 -0700338 "%4d %8d %8d %7d %5lu %-5d %5d ",
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700339 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
Neil Horman58fbbed2008-02-29 11:40:56 -0800340 assoc->state, hash,
341 assoc->assoc_id,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700342 assoc->sndbuf_used,
Vlad Yasevich6aa25512006-10-09 21:34:26 -0700343 atomic_read(&assoc->rmem_alloc),
Eric W. Biedermana7cb5a42012-05-24 01:10:10 -0600344 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
345 sock_i_ino(sk),
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700346 epb->bind_addr.port,
Neil Horman30e93562008-04-12 18:53:48 -0700347 assoc->peer.port);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700348 seq_printf(seq, " ");
349 sctp_seq_dump_local_addrs(seq, epb);
350 seq_printf(seq, "<-> ");
351 sctp_seq_dump_remote_addrs(seq, assoc);
Neil Horman30e93562008-04-12 18:53:48 -0700352 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);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700357 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700359 read_unlock(&head->lock);
360 sctp_local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
362 return 0;
363}
364
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700365static const struct seq_operations sctp_assoc_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700366 .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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372/* Initialize the seq file operations for 'assocs' object. */
373static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
374{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000375 return seq_open_net(inode, file, &sctp_assoc_ops,
376 sizeof(struct seq_net_private));
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,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000383 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384};
385
386/* Set up the proc fs entry for 'assocs' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000387int __net_init sctp_assocs_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388{
389 struct proc_dir_entry *p;
390
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000391 p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
Pavel Emelyanov459eea72008-02-29 11:24:45 -0800392 &sctp_assocs_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 if (!p)
394 return -ENOMEM;
395
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 return 0;
397}
398
399/* Cleanup the proc fs entry for 'assocs' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000400void sctp_assocs_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000402 remove_proc_entry("assocs", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403}
Neil Horman20c2c1f2008-05-09 15:14:50 -0700404
405static 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
420static 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
428static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
429{
Neil Horman20c2c1f2008-05-09 15:14:50 -0700430}
431
432static 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;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700437 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);
Thomas Graf45122ca262012-12-06 09:25:05 +0000446 rcu_read_lock();
Sasha Levinb67bfe02013-02-27 17:06:00 -0800447 sctp_for_each_hentry(epb, &head->chain) {
Ulrich Weber6932f112012-08-16 01:24:49 +0000448 if (!net_eq(sock_net(epb->sk), seq_file_net(seq)))
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000449 continue;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700450 assoc = sctp_assoc(epb);
Thomas Graf45122ca262012-12-06 09:25:05 +0000451 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
Neil Horman20c2c1f2008-05-09 15:14:50 -0700452 transports) {
Thomas Graf45122ca262012-12-06 09:25:05 +0000453 if (tsp->dead)
454 continue;
455
Neil Horman20c2c1f2008-05-09 15:14:50 -0700456 /*
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
Thomas Graf45122ca262012-12-06 09:25:05 +0000501 rcu_read_unlock();
Neil Horman20c2c1f2008-05-09 15:14:50 -0700502 read_unlock(&head->lock);
503 sctp_local_bh_enable();
504
505 return 0;
506
507}
508
509static 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. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000517void sctp_remaddr_proc_exit(struct net *net)
Neil Horman20c2c1f2008-05-09 15:14:50 -0700518{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000519 remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
Neil Horman20c2c1f2008-05-09 15:14:50 -0700520}
521
522static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
523{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000524 return seq_open_net(inode, file, &sctp_remaddr_ops,
525 sizeof(struct seq_net_private));
Neil Horman20c2c1f2008-05-09 15:14:50 -0700526}
527
528static const struct file_operations sctp_remaddr_seq_fops = {
529 .open = sctp_remaddr_seq_open,
530 .read = seq_read,
531 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000532 .release = seq_release_net,
Neil Horman20c2c1f2008-05-09 15:14:50 -0700533};
534
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000535int __net_init sctp_remaddr_proc_init(struct net *net)
Neil Horman20c2c1f2008-05-09 15:14:50 -0700536{
537 struct proc_dir_entry *p;
538
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000539 p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
540 &sctp_remaddr_seq_fops);
Neil Horman20c2c1f2008-05-09 15:14:50 -0700541 if (!p)
542 return -ENOMEM;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700543 return 0;
544}