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60c778b2 | 1 | /* SCTP kernel implementation |
1da177e4 LT |
2 | * Copyright (c) 2003 International Business Machines, Corp. |
3 | * | |
60c778b2 | 4 | * This file is part of the SCTP kernel implementation |
1da177e4 | 5 | * |
60c778b2 | 6 | * This SCTP implementation is free software; |
1da177e4 LT |
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 | * | |
60c778b2 | 12 | * This SCTP implementation is distributed in the hope that it |
1da177e4 LT |
13 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
14 | * ************************ | |
15 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
16 | * See the GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with GNU CC; see the file COPYING. If not, write to | |
20 | * the Free Software Foundation, 59 Temple Place - Suite 330, | |
21 | * Boston, MA 02111-1307, USA. | |
22 | * | |
23 | * Please send any bug reports or fixes you make to the | |
24 | * email address(es): | |
25 | * lksctp developers <lksctp-developers@lists.sourceforge.net> | |
26 | * | |
27 | * Or submit a bug report through the following website: | |
28 | * http://www.sf.net/projects/lksctp | |
29 | * | |
30 | * Written or modified by: | |
31 | * Sridhar Samudrala <sri@us.ibm.com> | |
32 | * | |
33 | * Any bugs reported given to us we will try to fix... any fixes shared will | |
34 | * be incorporated into the next SCTP release. | |
35 | */ | |
36 | ||
37 | #include <linux/types.h> | |
38 | #include <linux/seq_file.h> | |
39 | #include <linux/init.h> | |
40 | #include <net/sctp/sctp.h> | |
3f5340a6 | 41 | #include <net/ip.h> /* for snmp_fold_field */ |
1da177e4 | 42 | |
5833929c | 43 | static const struct snmp_mib sctp_snmp_list[] = { |
1da177e4 LT |
44 | SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB), |
45 | SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS), | |
46 | SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS), | |
47 | SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS), | |
48 | SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS), | |
49 | SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES), | |
50 | SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS), | |
51 | SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS), | |
52 | SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS), | |
53 | SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS), | |
54 | SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS), | |
55 | SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS), | |
56 | SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS), | |
57 | SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS), | |
58 | SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS), | |
59 | SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS), | |
60 | SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS), | |
ac0b0462 SS |
61 | SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS), |
62 | SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS), | |
63 | SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS), | |
64 | SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS), | |
65 | SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS), | |
66 | SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS), | |
67 | SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS), | |
68 | SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS), | |
69 | SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS), | |
70 | SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS), | |
71 | SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS), | |
72 | SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ), | |
73 | SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG), | |
74 | SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS), | |
75 | SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS), | |
d2287f84 | 76 | SNMP_MIB_SENTINEL |
1da177e4 LT |
77 | }; |
78 | ||
1da177e4 LT |
79 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ |
80 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) | |
81 | { | |
82 | int i; | |
83 | ||
84 | for (i = 0; sctp_snmp_list[i].name != NULL; i++) | |
85 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, | |
7d720c3e | 86 | snmp_fold_field((void __percpu **)sctp_statistics, |
1da177e4 LT |
87 | sctp_snmp_list[i].entry)); |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
92 | /* Initialize the seq file operations for 'snmp' object. */ | |
93 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
94 | { | |
95 | return single_open(file, sctp_snmp_seq_show, NULL); | |
96 | } | |
97 | ||
da7071d7 | 98 | static const struct file_operations sctp_snmp_seq_fops = { |
1da177e4 LT |
99 | .owner = THIS_MODULE, |
100 | .open = sctp_snmp_seq_open, | |
101 | .read = seq_read, | |
102 | .llseek = seq_lseek, | |
103 | .release = single_release, | |
104 | }; | |
105 | ||
106 | /* Set up the proc fs entry for 'snmp' object. */ | |
107 | int __init sctp_snmp_proc_init(void) | |
108 | { | |
109 | struct proc_dir_entry *p; | |
110 | ||
160f17e3 | 111 | p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops); |
1da177e4 LT |
112 | if (!p) |
113 | return -ENOMEM; | |
114 | ||
1da177e4 LT |
115 | return 0; |
116 | } | |
117 | ||
118 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
119 | void sctp_snmp_proc_exit(void) | |
120 | { | |
121 | remove_proc_entry("snmp", proc_net_sctp); | |
122 | } | |
123 | ||
124 | /* Dump local addresses of an association/endpoint. */ | |
125 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
126 | { | |
bca735bd | 127 | struct sctp_association *asoc; |
1da177e4 | 128 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
129 | struct sctp_transport *peer; |
130 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
131 | struct sctp_af *af; |
132 | ||
bca735bd VY |
133 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
134 | asoc = sctp_assoc(epb); | |
135 | peer = asoc->peer.primary_path; | |
5f242a13 | 136 | primary = &peer->saddr; |
bca735bd VY |
137 | } |
138 | ||
9dbc15f0 | 139 | list_for_each_entry(laddr, &epb->bind_addr.address_list, list) { |
5f242a13 | 140 | addr = &laddr->a; |
1da177e4 | 141 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
142 | if (primary && af->cmp_addr(addr, primary)) { |
143 | seq_printf(seq, "*"); | |
144 | } | |
5f242a13 | 145 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
146 | } |
147 | } | |
148 | ||
149 | /* Dump remote addresses of an association. */ | |
150 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
151 | { | |
1da177e4 | 152 | struct sctp_transport *transport; |
bca735bd | 153 | union sctp_addr *addr, *primary; |
1da177e4 LT |
154 | struct sctp_af *af; |
155 | ||
acd2bc96 | 156 | primary = &assoc->peer.primary_addr; |
9dbc15f0 RD |
157 | list_for_each_entry(transport, &assoc->peer.transport_addr_list, |
158 | transports) { | |
5f242a13 | 159 | addr = &transport->ipaddr; |
1da177e4 | 160 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 161 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
162 | seq_printf(seq, "*"); |
163 | } | |
5f242a13 | 164 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
165 | } |
166 | } | |
167 | ||
bca735bd VY |
168 | static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
169 | { | |
49392e5e | 170 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
171 | return NULL; |
172 | ||
173 | if (*pos < 0) | |
174 | *pos = 0; | |
175 | ||
176 | if (*pos == 0) | |
177 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
178 | ||
bca735bd VY |
179 | return (void *)pos; |
180 | } | |
181 | ||
182 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
183 | { | |
bca735bd VY |
184 | } |
185 | ||
186 | ||
187 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
188 | { | |
49392e5e | 189 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
190 | return NULL; |
191 | ||
bca735bd VY |
192 | return pos; |
193 | } | |
194 | ||
195 | ||
1da177e4 LT |
196 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
197 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
198 | { | |
199 | struct sctp_hashbucket *head; | |
200 | struct sctp_ep_common *epb; | |
201 | struct sctp_endpoint *ep; | |
202 | struct sock *sk; | |
d970dbf8 | 203 | struct hlist_node *node; |
38b0e42a | 204 | int hash = *(loff_t *)v; |
bca735bd | 205 | |
49392e5e | 206 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
207 | return -ENOMEM; |
208 | ||
49392e5e | 209 | head = &sctp_ep_hashtable[hash]; |
bca735bd VY |
210 | sctp_local_bh_disable(); |
211 | read_lock(&head->lock); | |
d970dbf8 | 212 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
213 | ep = sctp_ep(epb); |
214 | sk = epb->sk; | |
215 | seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, | |
49392e5e | 216 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd VY |
217 | epb->bind_addr.port, |
218 | sock_i_uid(sk), sock_i_ino(sk)); | |
219 | ||
220 | sctp_seq_dump_local_addrs(seq, epb); | |
221 | seq_printf(seq, "\n"); | |
1da177e4 | 222 | } |
bca735bd VY |
223 | read_unlock(&head->lock); |
224 | sctp_local_bh_enable(); | |
1da177e4 LT |
225 | |
226 | return 0; | |
227 | } | |
228 | ||
56b3d975 | 229 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
230 | .start = sctp_eps_seq_start, |
231 | .next = sctp_eps_seq_next, | |
232 | .stop = sctp_eps_seq_stop, | |
233 | .show = sctp_eps_seq_show, | |
234 | }; | |
235 | ||
236 | ||
1da177e4 LT |
237 | /* Initialize the seq file operations for 'eps' object. */ |
238 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
239 | { | |
bca735bd | 240 | return seq_open(file, &sctp_eps_ops); |
1da177e4 LT |
241 | } |
242 | ||
da7071d7 | 243 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
244 | .open = sctp_eps_seq_open, |
245 | .read = seq_read, | |
246 | .llseek = seq_lseek, | |
bca735bd | 247 | .release = seq_release, |
1da177e4 LT |
248 | }; |
249 | ||
250 | /* Set up the proc fs entry for 'eps' object. */ | |
251 | int __init sctp_eps_proc_init(void) | |
252 | { | |
253 | struct proc_dir_entry *p; | |
254 | ||
459eea74 | 255 | p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops); |
1da177e4 LT |
256 | if (!p) |
257 | return -ENOMEM; | |
258 | ||
1da177e4 LT |
259 | return 0; |
260 | } | |
261 | ||
262 | /* Cleanup the proc fs entry for 'eps' object. */ | |
263 | void sctp_eps_proc_exit(void) | |
264 | { | |
265 | remove_proc_entry("eps", proc_net_sctp); | |
266 | } | |
267 | ||
bca735bd VY |
268 | |
269 | static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) | |
270 | { | |
49392e5e | 271 | if (*pos >= sctp_assoc_hashsize) |
bca735bd VY |
272 | return NULL; |
273 | ||
274 | if (*pos < 0) | |
275 | *pos = 0; | |
276 | ||
277 | if (*pos == 0) | |
58fbbed4 NH |
278 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
279 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
280 | "RPORT LADDRS <-> RADDRS " | |
281 | "HBINT INS OUTS MAXRT T1X T2X RTXC\n"); | |
bca735bd | 282 | |
bca735bd VY |
283 | return (void *)pos; |
284 | } | |
285 | ||
286 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
287 | { | |
bca735bd VY |
288 | } |
289 | ||
290 | ||
291 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
292 | { | |
49392e5e | 293 | if (++*pos >= sctp_assoc_hashsize) |
bca735bd VY |
294 | return NULL; |
295 | ||
bca735bd VY |
296 | return pos; |
297 | } | |
298 | ||
1da177e4 LT |
299 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
300 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
301 | { | |
302 | struct sctp_hashbucket *head; | |
303 | struct sctp_ep_common *epb; | |
304 | struct sctp_association *assoc; | |
305 | struct sock *sk; | |
d970dbf8 | 306 | struct hlist_node *node; |
38b0e42a | 307 | int hash = *(loff_t *)v; |
bca735bd | 308 | |
49392e5e | 309 | if (hash >= sctp_assoc_hashsize) |
bca735bd VY |
310 | return -ENOMEM; |
311 | ||
49392e5e | 312 | head = &sctp_assoc_hashtable[hash]; |
bca735bd VY |
313 | sctp_local_bh_disable(); |
314 | read_lock(&head->lock); | |
d970dbf8 | 315 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
316 | assoc = sctp_assoc(epb); |
317 | sk = epb->sk; | |
318 | seq_printf(seq, | |
58fbbed4 | 319 | "%8p %8p %-3d %-3d %-2d %-4d " |
30e93560 | 320 | "%4d %8d %8d %7d %5lu %-5d %5d ", |
bca735bd | 321 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, |
58fbbed4 NH |
322 | assoc->state, hash, |
323 | assoc->assoc_id, | |
bca735bd | 324 | assoc->sndbuf_used, |
6aa2551c | 325 | atomic_read(&assoc->rmem_alloc), |
bca735bd VY |
326 | sock_i_uid(sk), sock_i_ino(sk), |
327 | epb->bind_addr.port, | |
30e93560 | 328 | assoc->peer.port); |
bca735bd VY |
329 | seq_printf(seq, " "); |
330 | sctp_seq_dump_local_addrs(seq, epb); | |
331 | seq_printf(seq, "<-> "); | |
332 | sctp_seq_dump_remote_addrs(seq, assoc); | |
30e93560 NH |
333 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ", |
334 | assoc->hbinterval, assoc->c.sinit_max_instreams, | |
335 | assoc->c.sinit_num_ostreams, assoc->max_retrans, | |
336 | assoc->init_retries, assoc->shutdown_retries, | |
337 | assoc->rtx_data_chunks); | |
bca735bd | 338 | seq_printf(seq, "\n"); |
1da177e4 | 339 | } |
bca735bd VY |
340 | read_unlock(&head->lock); |
341 | sctp_local_bh_enable(); | |
1da177e4 LT |
342 | |
343 | return 0; | |
344 | } | |
345 | ||
56b3d975 | 346 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
347 | .start = sctp_assocs_seq_start, |
348 | .next = sctp_assocs_seq_next, | |
349 | .stop = sctp_assocs_seq_stop, | |
350 | .show = sctp_assocs_seq_show, | |
351 | }; | |
352 | ||
1da177e4 LT |
353 | /* Initialize the seq file operations for 'assocs' object. */ |
354 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
355 | { | |
bca735bd | 356 | return seq_open(file, &sctp_assoc_ops); |
1da177e4 LT |
357 | } |
358 | ||
da7071d7 | 359 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
360 | .open = sctp_assocs_seq_open, |
361 | .read = seq_read, | |
362 | .llseek = seq_lseek, | |
bca735bd | 363 | .release = seq_release, |
1da177e4 LT |
364 | }; |
365 | ||
366 | /* Set up the proc fs entry for 'assocs' object. */ | |
367 | int __init sctp_assocs_proc_init(void) | |
368 | { | |
369 | struct proc_dir_entry *p; | |
370 | ||
459eea74 PE |
371 | p = proc_create("assocs", S_IRUGO, proc_net_sctp, |
372 | &sctp_assocs_seq_fops); | |
1da177e4 LT |
373 | if (!p) |
374 | return -ENOMEM; | |
375 | ||
1da177e4 LT |
376 | return 0; |
377 | } | |
378 | ||
379 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
380 | void sctp_assocs_proc_exit(void) | |
381 | { | |
382 | remove_proc_entry("assocs", proc_net_sctp); | |
383 | } | |
20c2c1fd NH |
384 | |
385 | static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos) | |
386 | { | |
387 | if (*pos >= sctp_assoc_hashsize) | |
388 | return NULL; | |
389 | ||
390 | if (*pos < 0) | |
391 | *pos = 0; | |
392 | ||
393 | if (*pos == 0) | |
394 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
395 | "REM_ADDR_RTX START\n"); | |
396 | ||
397 | return (void *)pos; | |
398 | } | |
399 | ||
400 | static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
401 | { | |
402 | if (++*pos >= sctp_assoc_hashsize) | |
403 | return NULL; | |
404 | ||
405 | return pos; | |
406 | } | |
407 | ||
408 | static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) | |
409 | { | |
20c2c1fd NH |
410 | } |
411 | ||
412 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) | |
413 | { | |
414 | struct sctp_hashbucket *head; | |
415 | struct sctp_ep_common *epb; | |
416 | struct sctp_association *assoc; | |
417 | struct hlist_node *node; | |
418 | struct sctp_transport *tsp; | |
419 | int hash = *(loff_t *)v; | |
420 | ||
421 | if (hash >= sctp_assoc_hashsize) | |
422 | return -ENOMEM; | |
423 | ||
424 | head = &sctp_assoc_hashtable[hash]; | |
425 | sctp_local_bh_disable(); | |
426 | read_lock(&head->lock); | |
427 | sctp_for_each_hentry(epb, node, &head->chain) { | |
428 | assoc = sctp_assoc(epb); | |
429 | list_for_each_entry(tsp, &assoc->peer.transport_addr_list, | |
430 | transports) { | |
431 | /* | |
432 | * The remote address (ADDR) | |
433 | */ | |
434 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
435 | seq_printf(seq, " "); | |
436 | ||
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_printf(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_printf(seq, "0"); | |
471 | ||
472 | seq_printf(seq, "\n"); | |
473 | } | |
474 | } | |
475 | ||
476 | read_unlock(&head->lock); | |
477 | sctp_local_bh_enable(); | |
478 | ||
479 | return 0; | |
480 | ||
481 | } | |
482 | ||
483 | static const struct seq_operations sctp_remaddr_ops = { | |
484 | .start = sctp_remaddr_seq_start, | |
485 | .next = sctp_remaddr_seq_next, | |
486 | .stop = sctp_remaddr_seq_stop, | |
487 | .show = sctp_remaddr_seq_show, | |
488 | }; | |
489 | ||
490 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
491 | void sctp_remaddr_proc_exit(void) | |
492 | { | |
493 | remove_proc_entry("remaddr", proc_net_sctp); | |
494 | } | |
495 | ||
496 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
497 | { | |
498 | return seq_open(file, &sctp_remaddr_ops); | |
499 | } | |
500 | ||
501 | static const struct file_operations sctp_remaddr_seq_fops = { | |
502 | .open = sctp_remaddr_seq_open, | |
503 | .read = seq_read, | |
504 | .llseek = seq_lseek, | |
505 | .release = seq_release, | |
506 | }; | |
507 | ||
508 | int __init sctp_remaddr_proc_init(void) | |
509 | { | |
510 | struct proc_dir_entry *p; | |
511 | ||
d71a09ed | 512 | p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops); |
20c2c1fd NH |
513 | if (!p) |
514 | return -ENOMEM; | |
20c2c1fd NH |
515 | return 0; |
516 | } |