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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* SCTP kernel implementation
3 * Copyright (c) 2003 International Business Machines, Corp.
4 *
5 * This file is part of the SCTP kernel implementation
6 *
7 * Please send any bug reports or fixes you make to the
8 * email address(es):
9 * lksctp developers <linux-sctp@vger.kernel.org>
10 *
11 * Written or modified by:
12 * Sridhar Samudrala <sri@us.ibm.com>
13 */
14
15#include <linux/types.h>
16#include <linux/seq_file.h>
17#include <linux/init.h>
18#include <linux/export.h>
19#include <net/sctp/sctp.h>
20#include <net/ip.h> /* for snmp_fold_field */
21
22static const struct snmp_mib sctp_snmp_list[] = {
23 SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
24 SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
25 SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
26 SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
27 SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
28 SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
29 SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
30 SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
31 SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
32 SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
33 SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
34 SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
35 SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
36 SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
37 SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
38 SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
39 SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
40 SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
41 SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
42 SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
43 SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
44 SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
45 SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
46 SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
47 SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
48 SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
49 SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
50 SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
51 SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
52 SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
53 SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
54 SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
55 SNMP_MIB_SENTINEL
56};
57
58/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
59static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
60{
61 unsigned long buff[SCTP_MIB_MAX];
62 struct net *net = seq->private;
63 int i;
64
65 memset(buff, 0, sizeof(unsigned long) * SCTP_MIB_MAX);
66
67 snmp_get_cpu_field_batch(buff, sctp_snmp_list,
68 net->sctp.sctp_statistics);
69 for (i = 0; sctp_snmp_list[i].name; i++)
70 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
71 buff[i]);
72
73 return 0;
74}
75
76/* Dump local addresses of an association/endpoint. */
77static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
78{
79 struct sctp_association *asoc;
80 struct sctp_sockaddr_entry *laddr;
81 struct sctp_transport *peer;
82 union sctp_addr *addr, *primary = NULL;
83 struct sctp_af *af;
84
85 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
86 asoc = sctp_assoc(epb);
87
88 peer = asoc->peer.primary_path;
89 if (unlikely(peer == NULL)) {
90 WARN(1, "Association %p with NULL primary path!\n", asoc);
91 return;
92 }
93
94 primary = &peer->saddr;
95 }
96
97 rcu_read_lock();
98 list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
99 if (!laddr->valid)
100 continue;
101
102 addr = &laddr->a;
103 af = sctp_get_af_specific(addr->sa.sa_family);
104 if (primary && af->cmp_addr(addr, primary)) {
105 seq_printf(seq, "*");
106 }
107 af->seq_dump_addr(seq, addr);
108 }
109 rcu_read_unlock();
110}
111
112/* Dump remote addresses of an association. */
113static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
114{
115 struct sctp_transport *transport;
116 union sctp_addr *addr, *primary;
117 struct sctp_af *af;
118
119 primary = &assoc->peer.primary_addr;
120 list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
121 transports) {
122 addr = &transport->ipaddr;
123
124 af = sctp_get_af_specific(addr->sa.sa_family);
125 if (af->cmp_addr(addr, primary)) {
126 seq_printf(seq, "*");
127 }
128 af->seq_dump_addr(seq, addr);
129 }
130}
131
132static void *sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
133{
134 if (*pos >= sctp_ep_hashsize)
135 return NULL;
136
137 if (*pos < 0)
138 *pos = 0;
139
140 if (*pos == 0)
141 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
142
143 return (void *)pos;
144}
145
146static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
147{
148}
149
150
151static void *sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
152{
153 if (++*pos >= sctp_ep_hashsize)
154 return NULL;
155
156 return pos;
157}
158
159
160/* Display sctp endpoints (/proc/net/sctp/eps). */
161static int sctp_eps_seq_show(struct seq_file *seq, void *v)
162{
163 struct sctp_hashbucket *head;
164 struct sctp_endpoint *ep;
165 struct sock *sk;
166 int hash = *(loff_t *)v;
167
168 if (hash >= sctp_ep_hashsize)
169 return -ENOMEM;
170
171 head = &sctp_ep_hashtable[hash];
172 read_lock_bh(&head->lock);
173 sctp_for_each_hentry(ep, &head->chain) {
174 sk = ep->base.sk;
175 if (!net_eq(sock_net(sk), seq_file_net(seq)))
176 continue;
177 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
178 sctp_sk(sk)->type, sk->sk_state, hash,
179 ep->base.bind_addr.port,
180 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
181 sock_i_ino(sk));
182
183 sctp_seq_dump_local_addrs(seq, &ep->base);
184 seq_printf(seq, "\n");
185 }
186 read_unlock_bh(&head->lock);
187
188 return 0;
189}
190
191static const struct seq_operations sctp_eps_ops = {
192 .start = sctp_eps_seq_start,
193 .next = sctp_eps_seq_next,
194 .stop = sctp_eps_seq_stop,
195 .show = sctp_eps_seq_show,
196};
197
198struct sctp_ht_iter {
199 struct seq_net_private p;
200 struct rhashtable_iter hti;
201};
202
203static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos)
204{
205 struct sctp_ht_iter *iter = seq->private;
206
207 sctp_transport_walk_start(&iter->hti);
208
209 return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos);
210}
211
212static void sctp_transport_seq_stop(struct seq_file *seq, void *v)
213{
214 struct sctp_ht_iter *iter = seq->private;
215
216 if (v && v != SEQ_START_TOKEN) {
217 struct sctp_transport *transport = v;
218
219 sctp_transport_put(transport);
220 }
221
222 sctp_transport_walk_stop(&iter->hti);
223}
224
225static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos)
226{
227 struct sctp_ht_iter *iter = seq->private;
228
229 if (v && v != SEQ_START_TOKEN) {
230 struct sctp_transport *transport = v;
231
232 sctp_transport_put(transport);
233 }
234
235 ++*pos;
236
237 return sctp_transport_get_next(seq_file_net(seq), &iter->hti);
238}
239
240/* Display sctp associations (/proc/net/sctp/assocs). */
241static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
242{
243 struct sctp_transport *transport;
244 struct sctp_association *assoc;
245 struct sctp_ep_common *epb;
246 struct sock *sk;
247
248 if (v == SEQ_START_TOKEN) {
249 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
250 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
251 "RPORT LADDRS <-> RADDRS "
252 "HBINT INS OUTS MAXRT T1X T2X RTXC "
253 "wmema wmemq sndbuf rcvbuf\n");
254 return 0;
255 }
256
257 transport = (struct sctp_transport *)v;
258 assoc = transport->asoc;
259 epb = &assoc->base;
260 sk = epb->sk;
261
262 seq_printf(seq,
263 "%8pK %8pK %-3d %-3d %-2d %-4d "
264 "%4d %8d %8d %7u %5lu %-5d %5d ",
265 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
266 assoc->state, 0,
267 assoc->assoc_id,
268 assoc->sndbuf_used,
269 atomic_read(&assoc->rmem_alloc),
270 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
271 sock_i_ino(sk),
272 epb->bind_addr.port,
273 assoc->peer.port);
274 seq_printf(seq, " ");
275 sctp_seq_dump_local_addrs(seq, epb);
276 seq_printf(seq, "<-> ");
277 sctp_seq_dump_remote_addrs(seq, assoc);
278 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
279 "%8d %8d %8d %8d",
280 assoc->hbinterval, assoc->stream.incnt,
281 assoc->stream.outcnt, assoc->max_retrans,
282 assoc->init_retries, assoc->shutdown_retries,
283 assoc->rtx_data_chunks,
284 refcount_read(&sk->sk_wmem_alloc),
285 READ_ONCE(sk->sk_wmem_queued),
286 sk->sk_sndbuf,
287 sk->sk_rcvbuf);
288 seq_printf(seq, "\n");
289
290 return 0;
291}
292
293static const struct seq_operations sctp_assoc_ops = {
294 .start = sctp_transport_seq_start,
295 .next = sctp_transport_seq_next,
296 .stop = sctp_transport_seq_stop,
297 .show = sctp_assocs_seq_show,
298};
299
300static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
301{
302 struct sctp_association *assoc;
303 struct sctp_transport *transport, *tsp;
304
305 if (v == SEQ_START_TOKEN) {
306 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
307 "REM_ADDR_RTX START STATE\n");
308 return 0;
309 }
310
311 transport = (struct sctp_transport *)v;
312 assoc = transport->asoc;
313
314 list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
315 transports) {
316 /*
317 * The remote address (ADDR)
318 */
319 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
320 seq_printf(seq, " ");
321 /*
322 * The association ID (ASSOC_ID)
323 */
324 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
325
326 /*
327 * If the Heartbeat is active (HB_ACT)
328 * Note: 1 = Active, 0 = Inactive
329 */
330 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
331
332 /*
333 * Retransmit time out (RTO)
334 */
335 seq_printf(seq, "%lu ", tsp->rto);
336
337 /*
338 * Maximum path retransmit count (PATH_MAX_RTX)
339 */
340 seq_printf(seq, "%d ", tsp->pathmaxrxt);
341
342 /*
343 * remote address retransmit count (REM_ADDR_RTX)
344 * Note: We don't have a way to tally this at the moment
345 * so lets just leave it as zero for the moment
346 */
347 seq_puts(seq, "0 ");
348
349 /*
350 * remote address start time (START). This is also not
351 * currently implemented, but we can record it with a
352 * jiffies marker in a subsequent patch
353 */
354 seq_puts(seq, "0 ");
355
356 /*
357 * The current state of this destination. I.e.
358 * SCTP_ACTIVE, SCTP_INACTIVE, ...
359 */
360 seq_printf(seq, "%d", tsp->state);
361
362 seq_printf(seq, "\n");
363 }
364
365 return 0;
366}
367
368static const struct seq_operations sctp_remaddr_ops = {
369 .start = sctp_transport_seq_start,
370 .next = sctp_transport_seq_next,
371 .stop = sctp_transport_seq_stop,
372 .show = sctp_remaddr_seq_show,
373};
374
375/* Set up the proc fs entry for the SCTP protocol. */
376int __net_init sctp_proc_init(struct net *net)
377{
378 net->sctp.proc_net_sctp = proc_net_mkdir(net, "sctp", net->proc_net);
379 if (!net->sctp.proc_net_sctp)
380 return -ENOMEM;
381 if (!proc_create_net_single("snmp", 0444, net->sctp.proc_net_sctp,
382 sctp_snmp_seq_show, NULL))
383 goto cleanup;
384 if (!proc_create_net("eps", 0444, net->sctp.proc_net_sctp,
385 &sctp_eps_ops, sizeof(struct seq_net_private)))
386 goto cleanup;
387 if (!proc_create_net("assocs", 0444, net->sctp.proc_net_sctp,
388 &sctp_assoc_ops, sizeof(struct sctp_ht_iter)))
389 goto cleanup;
390 if (!proc_create_net("remaddr", 0444, net->sctp.proc_net_sctp,
391 &sctp_remaddr_ops, sizeof(struct sctp_ht_iter)))
392 goto cleanup;
393 return 0;
394
395cleanup:
396 remove_proc_subtree("sctp", net->proc_net);
397 net->sctp.proc_net_sctp = NULL;
398 return -ENOMEM;
399}
1/* SCTP kernel implementation
2 * Copyright (c) 2003 International Business Machines, Corp.
3 *
4 * This file is part of the SCTP kernel implementation
5 *
6 * This SCTP 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 * This SCTP 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 <linux/export.h>
41#include <net/sctp/sctp.h>
42#include <net/ip.h> /* for snmp_fold_field */
43
44static const struct snmp_mib sctp_snmp_list[] = {
45 SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
46 SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
47 SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
48 SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
49 SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
50 SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
51 SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
52 SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
53 SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
54 SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
55 SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
56 SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
57 SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
58 SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
59 SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
60 SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
61 SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
62 SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
63 SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
64 SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
65 SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
66 SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
67 SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
68 SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
69 SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
70 SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
71 SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
72 SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
73 SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
74 SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
75 SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
76 SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
77 SNMP_MIB_SENTINEL
78};
79
80/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
81static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
82{
83 int i;
84
85 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
86 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
87 snmp_fold_field((void __percpu **)sctp_statistics,
88 sctp_snmp_list[i].entry));
89
90 return 0;
91}
92
93/* Initialize the seq file operations for 'snmp' object. */
94static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
95{
96 return single_open(file, sctp_snmp_seq_show, NULL);
97}
98
99static const struct file_operations sctp_snmp_seq_fops = {
100 .owner = THIS_MODULE,
101 .open = sctp_snmp_seq_open,
102 .read = seq_read,
103 .llseek = seq_lseek,
104 .release = single_release,
105};
106
107/* Set up the proc fs entry for 'snmp' object. */
108int __init sctp_snmp_proc_init(void)
109{
110 struct proc_dir_entry *p;
111
112 p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
113 if (!p)
114 return -ENOMEM;
115
116 return 0;
117}
118
119/* Cleanup the proc fs entry for 'snmp' object. */
120void sctp_snmp_proc_exit(void)
121{
122 remove_proc_entry("snmp", proc_net_sctp);
123}
124
125/* Dump local addresses of an association/endpoint. */
126static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
127{
128 struct sctp_association *asoc;
129 struct sctp_sockaddr_entry *laddr;
130 struct sctp_transport *peer;
131 union sctp_addr *addr, *primary = NULL;
132 struct sctp_af *af;
133
134 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
135 asoc = sctp_assoc(epb);
136 peer = asoc->peer.primary_path;
137 primary = &peer->saddr;
138 }
139
140 list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
141 addr = &laddr->a;
142 af = sctp_get_af_specific(addr->sa.sa_family);
143 if (primary && af->cmp_addr(addr, primary)) {
144 seq_printf(seq, "*");
145 }
146 af->seq_dump_addr(seq, addr);
147 }
148}
149
150/* Dump remote addresses of an association. */
151static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
152{
153 struct sctp_transport *transport;
154 union sctp_addr *addr, *primary;
155 struct sctp_af *af;
156
157 primary = &assoc->peer.primary_addr;
158 list_for_each_entry(transport, &assoc->peer.transport_addr_list,
159 transports) {
160 addr = &transport->ipaddr;
161 af = sctp_get_af_specific(addr->sa.sa_family);
162 if (af->cmp_addr(addr, primary)) {
163 seq_printf(seq, "*");
164 }
165 af->seq_dump_addr(seq, addr);
166 }
167}
168
169static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
170{
171 if (*pos >= sctp_ep_hashsize)
172 return NULL;
173
174 if (*pos < 0)
175 *pos = 0;
176
177 if (*pos == 0)
178 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
179
180 return (void *)pos;
181}
182
183static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
184{
185}
186
187
188static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
189{
190 if (++*pos >= sctp_ep_hashsize)
191 return NULL;
192
193 return pos;
194}
195
196
197/* Display sctp endpoints (/proc/net/sctp/eps). */
198static int sctp_eps_seq_show(struct seq_file *seq, void *v)
199{
200 struct sctp_hashbucket *head;
201 struct sctp_ep_common *epb;
202 struct sctp_endpoint *ep;
203 struct sock *sk;
204 struct hlist_node *node;
205 int hash = *(loff_t *)v;
206
207 if (hash >= sctp_ep_hashsize)
208 return -ENOMEM;
209
210 head = &sctp_ep_hashtable[hash];
211 sctp_local_bh_disable();
212 read_lock(&head->lock);
213 sctp_for_each_hentry(epb, node, &head->chain) {
214 ep = sctp_ep(epb);
215 sk = epb->sk;
216 seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
217 sctp_sk(sk)->type, sk->sk_state, hash,
218 epb->bind_addr.port,
219 sock_i_uid(sk), sock_i_ino(sk));
220
221 sctp_seq_dump_local_addrs(seq, epb);
222 seq_printf(seq, "\n");
223 }
224 read_unlock(&head->lock);
225 sctp_local_bh_enable();
226
227 return 0;
228}
229
230static const struct seq_operations sctp_eps_ops = {
231 .start = sctp_eps_seq_start,
232 .next = sctp_eps_seq_next,
233 .stop = sctp_eps_seq_stop,
234 .show = sctp_eps_seq_show,
235};
236
237
238/* Initialize the seq file operations for 'eps' object. */
239static int sctp_eps_seq_open(struct inode *inode, struct file *file)
240{
241 return seq_open(file, &sctp_eps_ops);
242}
243
244static const struct file_operations sctp_eps_seq_fops = {
245 .open = sctp_eps_seq_open,
246 .read = seq_read,
247 .llseek = seq_lseek,
248 .release = seq_release,
249};
250
251/* Set up the proc fs entry for 'eps' object. */
252int __init sctp_eps_proc_init(void)
253{
254 struct proc_dir_entry *p;
255
256 p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
257 if (!p)
258 return -ENOMEM;
259
260 return 0;
261}
262
263/* Cleanup the proc fs entry for 'eps' object. */
264void sctp_eps_proc_exit(void)
265{
266 remove_proc_entry("eps", proc_net_sctp);
267}
268
269
270static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
271{
272 if (*pos >= sctp_assoc_hashsize)
273 return NULL;
274
275 if (*pos < 0)
276 *pos = 0;
277
278 if (*pos == 0)
279 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
280 "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
281 "RPORT LADDRS <-> RADDRS "
282 "HBINT INS OUTS MAXRT T1X T2X RTXC\n");
283
284 return (void *)pos;
285}
286
287static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
288{
289}
290
291
292static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
293{
294 if (++*pos >= sctp_assoc_hashsize)
295 return NULL;
296
297 return pos;
298}
299
300/* Display sctp associations (/proc/net/sctp/assocs). */
301static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
302{
303 struct sctp_hashbucket *head;
304 struct sctp_ep_common *epb;
305 struct sctp_association *assoc;
306 struct sock *sk;
307 struct hlist_node *node;
308 int hash = *(loff_t *)v;
309
310 if (hash >= sctp_assoc_hashsize)
311 return -ENOMEM;
312
313 head = &sctp_assoc_hashtable[hash];
314 sctp_local_bh_disable();
315 read_lock(&head->lock);
316 sctp_for_each_hentry(epb, node, &head->chain) {
317 assoc = sctp_assoc(epb);
318 sk = epb->sk;
319 seq_printf(seq,
320 "%8pK %8pK %-3d %-3d %-2d %-4d "
321 "%4d %8d %8d %7d %5lu %-5d %5d ",
322 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
323 assoc->state, hash,
324 assoc->assoc_id,
325 assoc->sndbuf_used,
326 atomic_read(&assoc->rmem_alloc),
327 sock_i_uid(sk), sock_i_ino(sk),
328 epb->bind_addr.port,
329 assoc->peer.port);
330 seq_printf(seq, " ");
331 sctp_seq_dump_local_addrs(seq, epb);
332 seq_printf(seq, "<-> ");
333 sctp_seq_dump_remote_addrs(seq, assoc);
334 seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
335 assoc->hbinterval, assoc->c.sinit_max_instreams,
336 assoc->c.sinit_num_ostreams, assoc->max_retrans,
337 assoc->init_retries, assoc->shutdown_retries,
338 assoc->rtx_data_chunks);
339 seq_printf(seq, "\n");
340 }
341 read_unlock(&head->lock);
342 sctp_local_bh_enable();
343
344 return 0;
345}
346
347static const struct seq_operations sctp_assoc_ops = {
348 .start = sctp_assocs_seq_start,
349 .next = sctp_assocs_seq_next,
350 .stop = sctp_assocs_seq_stop,
351 .show = sctp_assocs_seq_show,
352};
353
354/* Initialize the seq file operations for 'assocs' object. */
355static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
356{
357 return seq_open(file, &sctp_assoc_ops);
358}
359
360static const struct file_operations sctp_assocs_seq_fops = {
361 .open = sctp_assocs_seq_open,
362 .read = seq_read,
363 .llseek = seq_lseek,
364 .release = seq_release,
365};
366
367/* Set up the proc fs entry for 'assocs' object. */
368int __init sctp_assocs_proc_init(void)
369{
370 struct proc_dir_entry *p;
371
372 p = proc_create("assocs", S_IRUGO, proc_net_sctp,
373 &sctp_assocs_seq_fops);
374 if (!p)
375 return -ENOMEM;
376
377 return 0;
378}
379
380/* Cleanup the proc fs entry for 'assocs' object. */
381void sctp_assocs_proc_exit(void)
382{
383 remove_proc_entry("assocs", proc_net_sctp);
384}
385
386static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
387{
388 if (*pos >= sctp_assoc_hashsize)
389 return NULL;
390
391 if (*pos < 0)
392 *pos = 0;
393
394 if (*pos == 0)
395 seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
396 "REM_ADDR_RTX START\n");
397
398 return (void *)pos;
399}
400
401static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
402{
403 if (++*pos >= sctp_assoc_hashsize)
404 return NULL;
405
406 return pos;
407}
408
409static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
410{
411}
412
413static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
414{
415 struct sctp_hashbucket *head;
416 struct sctp_ep_common *epb;
417 struct sctp_association *assoc;
418 struct hlist_node *node;
419 struct sctp_transport *tsp;
420 int hash = *(loff_t *)v;
421
422 if (hash >= sctp_assoc_hashsize)
423 return -ENOMEM;
424
425 head = &sctp_assoc_hashtable[hash];
426 sctp_local_bh_disable();
427 read_lock(&head->lock);
428 sctp_for_each_hentry(epb, node, &head->chain) {
429 assoc = sctp_assoc(epb);
430 list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
431 transports) {
432 /*
433 * The remote address (ADDR)
434 */
435 tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
436 seq_printf(seq, " ");
437
438 /*
439 * The association ID (ASSOC_ID)
440 */
441 seq_printf(seq, "%d ", tsp->asoc->assoc_id);
442
443 /*
444 * If the Heartbeat is active (HB_ACT)
445 * Note: 1 = Active, 0 = Inactive
446 */
447 seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
448
449 /*
450 * Retransmit time out (RTO)
451 */
452 seq_printf(seq, "%lu ", tsp->rto);
453
454 /*
455 * Maximum path retransmit count (PATH_MAX_RTX)
456 */
457 seq_printf(seq, "%d ", tsp->pathmaxrxt);
458
459 /*
460 * remote address retransmit count (REM_ADDR_RTX)
461 * Note: We don't have a way to tally this at the moment
462 * so lets just leave it as zero for the moment
463 */
464 seq_printf(seq, "0 ");
465
466 /*
467 * remote address start time (START). This is also not
468 * currently implemented, but we can record it with a
469 * jiffies marker in a subsequent patch
470 */
471 seq_printf(seq, "0");
472
473 seq_printf(seq, "\n");
474 }
475 }
476
477 read_unlock(&head->lock);
478 sctp_local_bh_enable();
479
480 return 0;
481
482}
483
484static const struct seq_operations sctp_remaddr_ops = {
485 .start = sctp_remaddr_seq_start,
486 .next = sctp_remaddr_seq_next,
487 .stop = sctp_remaddr_seq_stop,
488 .show = sctp_remaddr_seq_show,
489};
490
491/* Cleanup the proc fs entry for 'remaddr' object. */
492void sctp_remaddr_proc_exit(void)
493{
494 remove_proc_entry("remaddr", proc_net_sctp);
495}
496
497static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
498{
499 return seq_open(file, &sctp_remaddr_ops);
500}
501
502static const struct file_operations sctp_remaddr_seq_fops = {
503 .open = sctp_remaddr_seq_open,
504 .read = seq_read,
505 .llseek = seq_lseek,
506 .release = seq_release,
507};
508
509int __init sctp_remaddr_proc_init(void)
510{
511 struct proc_dir_entry *p;
512
513 p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
514 if (!p)
515 return -ENOMEM;
516 return 0;
517}