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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
Jeff Kirsher4b2f13a2013-12-06 06:28:48 -080019 * along with GNU CC; see the file COPYING. If not, see
20 * <http://www.gnu.org/licenses/>.
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 *
22 * Please send any bug reports or fixes you make to the
23 * email address(es):
Daniel Borkmann91705c62013-07-23 14:51:47 +020024 * lksctp developers <linux-sctp@vger.kernel.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 * Written or modified by:
27 * Sridhar Samudrala <sri@us.ibm.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 */
29
30#include <linux/types.h>
31#include <linux/seq_file.h>
32#include <linux/init.h>
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040033#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include <net/sctp/sctp.h>
Pavel Emelyanov3f5340a2008-02-09 23:23:44 -080035#include <net/ip.h> /* for snmp_fold_field */
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
Alexey Dobriyan58339292010-01-22 10:17:26 +000037static const struct snmp_mib sctp_snmp_list[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 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),
Sridhar Samudralaac0b0462006-08-22 00:15:33 -070055 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),
Vlad Yasevichd2287f82005-08-23 10:12:04 -070070 SNMP_MIB_SENTINEL
Linus Torvalds1da177e2005-04-16 15:20:36 -070071};
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
74static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
75{
Eric W. Biederman13d782f2012-08-06 08:45:15 +000076 struct net *net = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 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,
WANG Congc9f2dba2014-05-12 16:52:02 -070081 snmp_fold_field(net->sctp.sctp_statistics,
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 sctp_snmp_list[i].entry));
83
84 return 0;
85}
86
87/* Initialize the seq file operations for 'snmp' object. */
88static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
89{
Eric W. Biederman13d782f2012-08-06 08:45:15 +000090 return single_open_net(inode, file, sctp_snmp_seq_show);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091}
92
Arjan van de Venda7071d2007-02-12 00:55:36 -080093static const struct file_operations sctp_snmp_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 .owner = THIS_MODULE,
95 .open = sctp_snmp_seq_open,
96 .read = seq_read,
97 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +000098 .release = single_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -070099};
100
101/* Set up the proc fs entry for 'snmp' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000102int __net_init sctp_snmp_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103{
104 struct proc_dir_entry *p;
105
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000106 p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
107 &sctp_snmp_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 if (!p)
109 return -ENOMEM;
110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 return 0;
112}
113
114/* Cleanup the proc fs entry for 'snmp' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000115void sctp_snmp_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000117 remove_proc_entry("snmp", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118}
119
120/* Dump local addresses of an association/endpoint. */
121static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
122{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700123 struct sctp_association *asoc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 struct sctp_sockaddr_entry *laddr;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700125 struct sctp_transport *peer;
126 union sctp_addr *addr, *primary = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 struct sctp_af *af;
128
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700129 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
Daniel Borkmannf9e42b82013-06-14 18:24:04 +0200130 asoc = sctp_assoc(epb);
131
132 peer = asoc->peer.primary_path;
133 if (unlikely(peer == NULL)) {
Daniel Borkmannb527fe62013-06-25 18:17:28 +0200134 WARN(1, "Association %p with NULL primary path!\n", asoc);
Daniel Borkmannf9e42b82013-06-14 18:24:04 +0200135 return;
136 }
137
138 primary = &peer->saddr;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700139 }
140
Thomas Graf0b0fe912012-12-06 09:25:04 +0000141 rcu_read_lock();
142 list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
143 if (!laddr->valid)
144 continue;
145
Al Viro5f242a12006-11-20 17:05:23 -0800146 addr = &laddr->a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 af = sctp_get_af_specific(addr->sa.sa_family);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700148 if (primary && af->cmp_addr(addr, primary)) {
149 seq_printf(seq, "*");
150 }
Al Viro5f242a12006-11-20 17:05:23 -0800151 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 }
Thomas Graf0b0fe912012-12-06 09:25:04 +0000153 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154}
155
156/* Dump remote addresses of an association. */
157static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
158{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 struct sctp_transport *transport;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700160 union sctp_addr *addr, *primary;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 struct sctp_af *af;
162
Al Viroacd2bc92006-11-20 17:06:04 -0800163 primary = &assoc->peer.primary_addr;
Thomas Graf45122ca262012-12-06 09:25:05 +0000164 rcu_read_lock();
165 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
Robert P. J. Day9dbc15f2008-04-12 18:54:24 -0700166 transports) {
Al Viro5f242a12006-11-20 17:05:23 -0800167 addr = &transport->ipaddr;
Thomas Graf45122ca262012-12-06 09:25:05 +0000168 if (transport->dead)
169 continue;
170
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 af = sctp_get_af_specific(addr->sa.sa_family);
Al Viroacd2bc92006-11-20 17:06:04 -0800172 if (af->cmp_addr(addr, primary)) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700173 seq_printf(seq, "*");
174 }
Al Viro5f242a12006-11-20 17:05:23 -0800175 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 }
Thomas Graf45122ca262012-12-06 09:25:05 +0000177 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178}
179
wangweidong26ac8e52013-12-23 12:16:51 +0800180static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700181{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800182 if (*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700183 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
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700191 return (void *)pos;
192}
193
194static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
195{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700196}
197
198
wangweidong26ac8e52013-12-23 12:16:51 +0800199static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700200{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800201 if (++*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700202 return NULL;
203
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700204 return pos;
205}
206
207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208/* Display sctp endpoints (/proc/net/sctp/eps). */
209static 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;
Vlad Yasevich38b0e422006-01-17 11:54:06 -0800215 int hash = *(loff_t *)v;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216
Vlad Yasevich49392e52006-01-17 11:53:06 -0800217 if (hash >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700218 return -ENOMEM;
219
Vlad Yasevich49392e52006-01-17 11:53:06 -0800220 head = &sctp_ep_hashtable[hash];
wangweidong79b91132014-01-21 15:44:07 +0800221 local_bh_disable();
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700222 read_lock(&head->lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800223 sctp_for_each_hentry(epb, &head->chain) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700224 ep = sctp_ep(epb);
225 sk = epb->sk;
Ulrich Weber6932f112012-08-16 01:24:49 +0000226 if (!net_eq(sock_net(sk), seq_file_net(seq)))
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000227 continue;
Francesco Fuscod14c5ab2013-08-15 13:42:14 +0200228 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
Vlad Yasevich49392e52006-01-17 11:53:06 -0800229 sctp_sk(sk)->type, sk->sk_state, hash,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700230 epb->bind_addr.port,
Eric W. Biedermana7cb5a42012-05-24 01:10:10 -0600231 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
232 sock_i_ino(sk));
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700233
234 sctp_seq_dump_local_addrs(seq, epb);
235 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700237 read_unlock(&head->lock);
wangweidong79b91132014-01-21 15:44:07 +0800238 local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239
240 return 0;
241}
242
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700243static const struct seq_operations sctp_eps_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700244 .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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251/* Initialize the seq file operations for 'eps' object. */
252static int sctp_eps_seq_open(struct inode *inode, struct file *file)
253{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000254 return seq_open_net(inode, file, &sctp_eps_ops,
255 sizeof(struct seq_net_private));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256}
257
Arjan van de Venda7071d2007-02-12 00:55:36 -0800258static const struct file_operations sctp_eps_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 .open = sctp_eps_seq_open,
260 .read = seq_read,
261 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000262 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263};
264
265/* Set up the proc fs entry for 'eps' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000266int __net_init sctp_eps_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267{
268 struct proc_dir_entry *p;
269
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000270 p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
271 &sctp_eps_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 if (!p)
273 return -ENOMEM;
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 return 0;
276}
277
278/* Cleanup the proc fs entry for 'eps' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000279void sctp_eps_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000281 remove_proc_entry("eps", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282}
283
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700284
wangweidong26ac8e52013-12-23 12:16:51 +0800285static void *sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700286{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800287 if (*pos >= sctp_assoc_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700288 return NULL;
289
290 if (*pos < 0)
291 *pos = 0;
292
293 if (*pos == 0)
Neil Horman58fbbed2008-02-29 11:40:56 -0800294 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
295 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
296 "RPORT LADDRS <-> RADDRS "
Dilip Dayaf406c8b2013-04-16 01:39:07 +0000297 "HBINT INS OUTS MAXRT T1X T2X RTXC "
298 "wmema wmemq sndbuf rcvbuf\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
wangweidong26ac8e52013-12-23 12:16:51 +0800308static void *sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700309{
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];
wangweidong79b91132014-01-21 15:44:07 +0800329 local_bh_disable();
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700330 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 "
Francesco Fuscod14c5ab2013-08-15 13:42:14 +0200338 "%4d %8d %8d %7u %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);
Dilip Dayaf406c8b2013-04-16 01:39:07 +0000352 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
353 "%8d %8d %8d %8d",
Neil Horman30e93562008-04-12 18:53:48 -0700354 assoc->hbinterval, assoc->c.sinit_max_instreams,
355 assoc->c.sinit_num_ostreams, assoc->max_retrans,
356 assoc->init_retries, assoc->shutdown_retries,
Dilip Dayaf406c8b2013-04-16 01:39:07 +0000357 assoc->rtx_data_chunks,
358 atomic_read(&sk->sk_wmem_alloc),
359 sk->sk_wmem_queued,
360 sk->sk_sndbuf,
361 sk->sk_rcvbuf);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700362 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700364 read_unlock(&head->lock);
wangweidong79b91132014-01-21 15:44:07 +0800365 local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366
367 return 0;
368}
369
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700370static const struct seq_operations sctp_assoc_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700371 .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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377/* Initialize the seq file operations for 'assocs' object. */
378static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
379{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000380 return seq_open_net(inode, file, &sctp_assoc_ops,
381 sizeof(struct seq_net_private));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382}
383
Arjan van de Venda7071d2007-02-12 00:55:36 -0800384static const struct file_operations sctp_assocs_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 .open = sctp_assocs_seq_open,
386 .read = seq_read,
387 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000388 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389};
390
391/* Set up the proc fs entry for 'assocs' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000392int __net_init sctp_assocs_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393{
394 struct proc_dir_entry *p;
395
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000396 p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
Pavel Emelyanov459eea72008-02-29 11:24:45 -0800397 &sctp_assocs_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 if (!p)
399 return -ENOMEM;
400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 return 0;
402}
403
404/* Cleanup the proc fs entry for 'assocs' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000405void sctp_assocs_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000407 remove_proc_entry("assocs", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408}
Neil Horman20c2c1f2008-05-09 15:14:50 -0700409
410static 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
425static 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
433static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
434{
Neil Horman20c2c1f2008-05-09 15:14:50 -0700435}
436
437static 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;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700442 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];
wangweidong79b91132014-01-21 15:44:07 +0800449 local_bh_disable();
Neil Horman20c2c1f2008-05-09 15:14:50 -0700450 read_lock(&head->lock);
Thomas Graf45122ca262012-12-06 09:25:05 +0000451 rcu_read_lock();
Sasha Levinb67bfe02013-02-27 17:06:00 -0800452 sctp_for_each_hentry(epb, &head->chain) {
Ulrich Weber6932f112012-08-16 01:24:49 +0000453 if (!net_eq(sock_net(epb->sk), seq_file_net(seq)))
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000454 continue;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700455 assoc = sctp_assoc(epb);
Thomas Graf45122ca262012-12-06 09:25:05 +0000456 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
Neil Horman20c2c1f2008-05-09 15:14:50 -0700457 transports) {
Thomas Graf45122ca262012-12-06 09:25:05 +0000458 if (tsp->dead)
459 continue;
460
Neil Horman20c2c1f2008-05-09 15:14:50 -0700461 /*
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
Thomas Graf45122ca262012-12-06 09:25:05 +0000506 rcu_read_unlock();
Neil Horman20c2c1f2008-05-09 15:14:50 -0700507 read_unlock(&head->lock);
wangweidong79b91132014-01-21 15:44:07 +0800508 local_bh_enable();
Neil Horman20c2c1f2008-05-09 15:14:50 -0700509
510 return 0;
511
512}
513
514static 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. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000522void sctp_remaddr_proc_exit(struct net *net)
Neil Horman20c2c1f2008-05-09 15:14:50 -0700523{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000524 remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
Neil Horman20c2c1f2008-05-09 15:14:50 -0700525}
526
527static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
528{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000529 return seq_open_net(inode, file, &sctp_remaddr_ops,
530 sizeof(struct seq_net_private));
Neil Horman20c2c1f2008-05-09 15:14:50 -0700531}
532
533static const struct file_operations sctp_remaddr_seq_fops = {
534 .open = sctp_remaddr_seq_open,
535 .read = seq_read,
536 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000537 .release = seq_release_net,
Neil Horman20c2c1f2008-05-09 15:14:50 -0700538};
539
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000540int __net_init sctp_remaddr_proc_init(struct net *net)
Neil Horman20c2c1f2008-05-09 15:14:50 -0700541{
542 struct proc_dir_entry *p;
543
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000544 p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
545 &sctp_remaddr_seq_fops);
Neil Horman20c2c1f2008-05-09 15:14:50 -0700546 if (!p)
547 return -ENOMEM;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700548 return 0;
549}