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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 Viro5f242a132006-11-20 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 Viro5f242a132006-11-20 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 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
Robert P. J. Day9dbc15f02008-04-12 18:54:24 -0700165 transports) {
Al Viro5f242a132006-11-20 17:05:23 -0800166 addr = &transport->ipaddr;
Thomas Graf45122ca262012-12-06 09:25:05 +0000167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 af = sctp_get_af_specific(addr->sa.sa_family);
Al Viroacd2bc92006-11-20 17:06:04 -0800169 if (af->cmp_addr(addr, primary)) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700170 seq_printf(seq, "*");
171 }
Al Viro5f242a132006-11-20 17:05:23 -0800172 af->seq_dump_addr(seq, addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 }
174}
175
wangweidong26ac8e52013-12-23 12:16:51 +0800176static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700177{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800178 if (*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700179 return NULL;
180
181 if (*pos < 0)
182 *pos = 0;
183
184 if (*pos == 0)
185 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
186
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700187 return (void *)pos;
188}
189
190static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
191{
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700192}
193
194
wangweidong26ac8e52013-12-23 12:16:51 +0800195static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700196{
Vlad Yasevich49392e52006-01-17 11:53:06 -0800197 if (++*pos >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700198 return NULL;
199
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700200 return pos;
201}
202
203
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204/* Display sctp endpoints (/proc/net/sctp/eps). */
205static int sctp_eps_seq_show(struct seq_file *seq, void *v)
206{
207 struct sctp_hashbucket *head;
208 struct sctp_ep_common *epb;
209 struct sctp_endpoint *ep;
210 struct sock *sk;
Vlad Yasevich38b0e422006-01-17 11:54:06 -0800211 int hash = *(loff_t *)v;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
Vlad Yasevich49392e52006-01-17 11:53:06 -0800213 if (hash >= sctp_ep_hashsize)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700214 return -ENOMEM;
215
Vlad Yasevich49392e52006-01-17 11:53:06 -0800216 head = &sctp_ep_hashtable[hash];
wangweidong79b91132014-01-21 15:44:07 +0800217 local_bh_disable();
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700218 read_lock(&head->lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800219 sctp_for_each_hentry(epb, &head->chain) {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700220 ep = sctp_ep(epb);
221 sk = epb->sk;
Ulrich Weber6932f112012-08-16 01:24:49 +0000222 if (!net_eq(sock_net(sk), seq_file_net(seq)))
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000223 continue;
Francesco Fuscod14c5ab2013-08-15 13:42:14 +0200224 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
Vlad Yasevich49392e52006-01-17 11:53:06 -0800225 sctp_sk(sk)->type, sk->sk_state, hash,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700226 epb->bind_addr.port,
Eric W. Biedermana7cb5a42012-05-24 01:10:10 -0600227 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
228 sock_i_ino(sk));
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700229
230 sctp_seq_dump_local_addrs(seq, epb);
231 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700233 read_unlock(&head->lock);
wangweidong79b91132014-01-21 15:44:07 +0800234 local_bh_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
236 return 0;
237}
238
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700239static const struct seq_operations sctp_eps_ops = {
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700240 .start = sctp_eps_seq_start,
241 .next = sctp_eps_seq_next,
242 .stop = sctp_eps_seq_stop,
243 .show = sctp_eps_seq_show,
244};
245
246
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247/* Initialize the seq file operations for 'eps' object. */
248static int sctp_eps_seq_open(struct inode *inode, struct file *file)
249{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000250 return seq_open_net(inode, file, &sctp_eps_ops,
251 sizeof(struct seq_net_private));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252}
253
Arjan van de Venda7071d2007-02-12 00:55:36 -0800254static const struct file_operations sctp_eps_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 .open = sctp_eps_seq_open,
256 .read = seq_read,
257 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000258 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259};
260
261/* Set up the proc fs entry for 'eps' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000262int __net_init sctp_eps_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263{
264 struct proc_dir_entry *p;
265
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000266 p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
267 &sctp_eps_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 if (!p)
269 return -ENOMEM;
270
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 return 0;
272}
273
274/* Cleanup the proc fs entry for 'eps' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000275void sctp_eps_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000277 remove_proc_entry("eps", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278}
279
Xin Long39f66a72015-12-30 23:50:48 +0800280struct sctp_ht_iter {
281 struct seq_net_private p;
282 struct rhashtable_iter hti;
Xin Long53fa1032016-04-14 15:35:35 +0800283 int start_fail;
Xin Long39f66a72015-12-30 23:50:48 +0800284};
285
Xin Longb5e2f4e2016-04-14 15:35:34 +0800286static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700287{
Xin Long626d16f2016-04-14 15:35:31 +0800288 struct sctp_ht_iter *iter = seq->private;
289 int err = sctp_transport_walk_start(&iter->hti);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700290
Xin Long53fa1032016-04-14 15:35:35 +0800291 if (err) {
292 iter->start_fail = 1;
Xin Long39f66a72015-12-30 23:50:48 +0800293 return ERR_PTR(err);
Xin Long53fa1032016-04-14 15:35:35 +0800294 }
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700295
Xin Long626d16f2016-04-14 15:35:31 +0800296 return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700297}
298
Xin Longb5e2f4e2016-04-14 15:35:34 +0800299static void sctp_transport_seq_stop(struct seq_file *seq, void *v)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700300{
Xin Long626d16f2016-04-14 15:35:31 +0800301 struct sctp_ht_iter *iter = seq->private;
302
Xin Long53fa1032016-04-14 15:35:35 +0800303 if (iter->start_fail)
304 return;
Xin Long626d16f2016-04-14 15:35:31 +0800305 sctp_transport_walk_stop(&iter->hti);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700306}
307
Xin Longb5e2f4e2016-04-14 15:35:34 +0800308static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos)
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700309{
Xin Long626d16f2016-04-14 15:35:31 +0800310 struct sctp_ht_iter *iter = seq->private;
311
Xin Long39f66a72015-12-30 23:50:48 +0800312 ++*pos;
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700313
Xin Long626d16f2016-04-14 15:35:31 +0800314 return sctp_transport_get_next(seq_file_net(seq), &iter->hti);
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700315}
316
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317/* Display sctp associations (/proc/net/sctp/assocs). */
318static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
319{
Xin Long39f66a72015-12-30 23:50:48 +0800320 struct sctp_transport *transport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 struct sctp_association *assoc;
Xin Long39f66a72015-12-30 23:50:48 +0800322 struct sctp_ep_common *epb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 struct sock *sk;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
Xin Long39f66a72015-12-30 23:50:48 +0800325 if (v == SEQ_START_TOKEN) {
326 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
327 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
328 "RPORT LADDRS <-> RADDRS "
329 "HBINT INS OUTS MAXRT T1X T2X RTXC "
330 "wmema wmemq sndbuf rcvbuf\n");
331 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 }
Xin Long39f66a72015-12-30 23:50:48 +0800333
334 transport = (struct sctp_transport *)v;
Xin Longfba4c332016-01-22 01:49:08 +0800335 if (!sctp_transport_hold(transport))
336 return 0;
Xin Long39f66a72015-12-30 23:50:48 +0800337 assoc = transport->asoc;
338 epb = &assoc->base;
339 sk = epb->sk;
340
341 seq_printf(seq,
342 "%8pK %8pK %-3d %-3d %-2d %-4d "
343 "%4d %8d %8d %7u %5lu %-5d %5d ",
344 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
345 assoc->state, 0,
346 assoc->assoc_id,
347 assoc->sndbuf_used,
348 atomic_read(&assoc->rmem_alloc),
349 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
350 sock_i_ino(sk),
351 epb->bind_addr.port,
352 assoc->peer.port);
353 seq_printf(seq, " ");
354 sctp_seq_dump_local_addrs(seq, epb);
355 seq_printf(seq, "<-> ");
356 sctp_seq_dump_remote_addrs(seq, assoc);
357 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
358 "%8d %8d %8d %8d",
359 assoc->hbinterval, assoc->c.sinit_max_instreams,
360 assoc->c.sinit_num_ostreams, assoc->max_retrans,
361 assoc->init_retries, assoc->shutdown_retries,
362 assoc->rtx_data_chunks,
363 atomic_read(&sk->sk_wmem_alloc),
364 sk->sk_wmem_queued,
365 sk->sk_sndbuf,
366 sk->sk_rcvbuf);
367 seq_printf(seq, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
Xin Longfba4c332016-01-22 01:49:08 +0800369 sctp_transport_put(transport);
370
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 return 0;
372}
373
Philippe De Muyter56b3d972007-07-10 23:07:31 -0700374static const struct seq_operations sctp_assoc_ops = {
Xin Longb5e2f4e2016-04-14 15:35:34 +0800375 .start = sctp_transport_seq_start,
376 .next = sctp_transport_seq_next,
377 .stop = sctp_transport_seq_stop,
Vladislav Yasevichbca735b2005-06-13 15:11:57 -0700378 .show = sctp_assocs_seq_show,
379};
380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381/* Initialize the seq file operations for 'assocs' object. */
382static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
383{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000384 return seq_open_net(inode, file, &sctp_assoc_ops,
Xin Long39f66a72015-12-30 23:50:48 +0800385 sizeof(struct sctp_ht_iter));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386}
387
Arjan van de Venda7071d2007-02-12 00:55:36 -0800388static const struct file_operations sctp_assocs_seq_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 .open = sctp_assocs_seq_open,
390 .read = seq_read,
391 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000392 .release = seq_release_net,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393};
394
395/* Set up the proc fs entry for 'assocs' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000396int __net_init sctp_assocs_proc_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397{
398 struct proc_dir_entry *p;
399
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000400 p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
Pavel Emelyanov459eea72008-02-29 11:24:45 -0800401 &sctp_assocs_seq_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 if (!p)
403 return -ENOMEM;
404
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 return 0;
406}
407
408/* Cleanup the proc fs entry for 'assocs' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000409void sctp_assocs_proc_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000411 remove_proc_entry("assocs", net->sctp.proc_net_sctp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412}
Neil Horman20c2c1f2008-05-09 15:14:50 -0700413
Neil Horman20c2c1f2008-05-09 15:14:50 -0700414static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
415{
Neil Horman20c2c1f2008-05-09 15:14:50 -0700416 struct sctp_association *assoc;
Xin Long3d73e8f2016-02-28 10:33:11 +0800417 struct sctp_transport *transport, *tsp;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700418
Xin Long39f66a72015-12-30 23:50:48 +0800419 if (v == SEQ_START_TOKEN) {
420 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
421 "REM_ADDR_RTX START STATE\n");
422 return 0;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700423 }
424
Xin Long3d73e8f2016-02-28 10:33:11 +0800425 transport = (struct sctp_transport *)v;
426 if (!sctp_transport_hold(transport))
Xin Longfba4c332016-01-22 01:49:08 +0800427 return 0;
Xin Long3d73e8f2016-02-28 10:33:11 +0800428 assoc = transport->asoc;
Xin Long39f66a72015-12-30 23:50:48 +0800429
430 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
431 transports) {
Xin Long39f66a72015-12-30 23:50:48 +0800432 /*
433 * The remote address (ADDR)
434 */
435 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
436 seq_printf(seq, " ");
437 /*
438 * The association ID (ASSOC_ID)
439 */
440 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
441
442 /*
443 * If the Heartbeat is active (HB_ACT)
444 * Note: 1 = Active, 0 = Inactive
445 */
446 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
447
448 /*
449 * Retransmit time out (RTO)
450 */
451 seq_printf(seq, "%lu ", tsp->rto);
452
453 /*
454 * Maximum path retransmit count (PATH_MAX_RTX)
455 */
456 seq_printf(seq, "%d ", tsp->pathmaxrxt);
457
458 /*
459 * remote address retransmit count (REM_ADDR_RTX)
460 * Note: We don't have a way to tally this at the moment
461 * so lets just leave it as zero for the moment
462 */
463 seq_puts(seq, "0 ");
464
465 /*
466 * remote address start time (START). This is also not
467 * currently implemented, but we can record it with a
468 * jiffies marker in a subsequent patch
469 */
470 seq_puts(seq, "0 ");
471
472 /*
473 * The current state of this destination. I.e.
474 * SCTP_ACTIVE, SCTP_INACTIVE, ...
475 */
476 seq_printf(seq, "%d", tsp->state);
477
478 seq_printf(seq, "\n");
479 }
Neil Horman20c2c1f2008-05-09 15:14:50 -0700480
Xin Long3d73e8f2016-02-28 10:33:11 +0800481 sctp_transport_put(transport);
Xin Longfba4c332016-01-22 01:49:08 +0800482
Neil Horman20c2c1f2008-05-09 15:14:50 -0700483 return 0;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700484}
485
486static const struct seq_operations sctp_remaddr_ops = {
Xin Longb5e2f4e2016-04-14 15:35:34 +0800487 .start = sctp_transport_seq_start,
488 .next = sctp_transport_seq_next,
489 .stop = sctp_transport_seq_stop,
Neil Horman20c2c1f2008-05-09 15:14:50 -0700490 .show = sctp_remaddr_seq_show,
491};
492
493/* Cleanup the proc fs entry for 'remaddr' object. */
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000494void sctp_remaddr_proc_exit(struct net *net)
Neil Horman20c2c1f2008-05-09 15:14:50 -0700495{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000496 remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
Neil Horman20c2c1f2008-05-09 15:14:50 -0700497}
498
499static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
500{
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000501 return seq_open_net(inode, file, &sctp_remaddr_ops,
Xin Long39f66a72015-12-30 23:50:48 +0800502 sizeof(struct sctp_ht_iter));
Neil Horman20c2c1f2008-05-09 15:14:50 -0700503}
504
505static const struct file_operations sctp_remaddr_seq_fops = {
506 .open = sctp_remaddr_seq_open,
507 .read = seq_read,
508 .llseek = seq_lseek,
Tommi Rantala0da9a0c2012-11-15 03:49:05 +0000509 .release = seq_release_net,
Neil Horman20c2c1f2008-05-09 15:14:50 -0700510};
511
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000512int __net_init sctp_remaddr_proc_init(struct net *net)
Neil Horman20c2c1f2008-05-09 15:14:50 -0700513{
514 struct proc_dir_entry *p;
515
Eric W. Biederman13d782f2012-08-06 08:45:15 +0000516 p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
517 &sctp_remaddr_seq_fops);
Neil Horman20c2c1f2008-05-09 15:14:50 -0700518 if (!p)
519 return -ENOMEM;
Neil Horman20c2c1f2008-05-09 15:14:50 -0700520 return 0;
521}