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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> | |
bc3b2d7f | 40 | #include <linux/export.h> |
1da177e4 | 41 | #include <net/sctp/sctp.h> |
3f5340a6 | 42 | #include <net/ip.h> /* for snmp_fold_field */ |
1da177e4 | 43 | |
5833929c | 44 | static const struct snmp_mib sctp_snmp_list[] = { |
1da177e4 LT |
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), | |
ac0b0462 SS |
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), | |
d2287f84 | 77 | SNMP_MIB_SENTINEL |
1da177e4 LT |
78 | }; |
79 | ||
1da177e4 LT |
80 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ |
81 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) | |
82 | { | |
13d782f6 | 83 | struct net *net = seq->private; |
1da177e4 LT |
84 | int i; |
85 | ||
86 | for (i = 0; sctp_snmp_list[i].name != NULL; i++) | |
87 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, | |
b01a2407 | 88 | snmp_fold_field((void __percpu **)net->sctp.sctp_statistics, |
1da177e4 LT |
89 | sctp_snmp_list[i].entry)); |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | /* Initialize the seq file operations for 'snmp' object. */ | |
95 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
96 | { | |
13d782f6 | 97 | return single_open_net(inode, file, sctp_snmp_seq_show); |
1da177e4 LT |
98 | } |
99 | ||
da7071d7 | 100 | static const struct file_operations sctp_snmp_seq_fops = { |
1da177e4 LT |
101 | .owner = THIS_MODULE, |
102 | .open = sctp_snmp_seq_open, | |
103 | .read = seq_read, | |
104 | .llseek = seq_lseek, | |
105 | .release = single_release, | |
106 | }; | |
107 | ||
108 | /* Set up the proc fs entry for 'snmp' object. */ | |
13d782f6 | 109 | int __net_init sctp_snmp_proc_init(struct net *net) |
1da177e4 LT |
110 | { |
111 | struct proc_dir_entry *p; | |
112 | ||
13d782f6 EB |
113 | p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp, |
114 | &sctp_snmp_seq_fops); | |
1da177e4 LT |
115 | if (!p) |
116 | return -ENOMEM; | |
117 | ||
1da177e4 LT |
118 | return 0; |
119 | } | |
120 | ||
121 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
13d782f6 | 122 | void sctp_snmp_proc_exit(struct net *net) |
1da177e4 | 123 | { |
13d782f6 | 124 | remove_proc_entry("snmp", net->sctp.proc_net_sctp); |
1da177e4 LT |
125 | } |
126 | ||
127 | /* Dump local addresses of an association/endpoint. */ | |
128 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
129 | { | |
bca735bd | 130 | struct sctp_association *asoc; |
1da177e4 | 131 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
132 | struct sctp_transport *peer; |
133 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
134 | struct sctp_af *af; |
135 | ||
bca735bd VY |
136 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
137 | asoc = sctp_assoc(epb); | |
138 | peer = asoc->peer.primary_path; | |
5f242a13 | 139 | primary = &peer->saddr; |
bca735bd VY |
140 | } |
141 | ||
9dbc15f0 | 142 | list_for_each_entry(laddr, &epb->bind_addr.address_list, list) { |
5f242a13 | 143 | addr = &laddr->a; |
1da177e4 | 144 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
145 | if (primary && af->cmp_addr(addr, primary)) { |
146 | seq_printf(seq, "*"); | |
147 | } | |
5f242a13 | 148 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
149 | } |
150 | } | |
151 | ||
152 | /* Dump remote addresses of an association. */ | |
153 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
154 | { | |
1da177e4 | 155 | struct sctp_transport *transport; |
bca735bd | 156 | union sctp_addr *addr, *primary; |
1da177e4 LT |
157 | struct sctp_af *af; |
158 | ||
acd2bc96 | 159 | primary = &assoc->peer.primary_addr; |
9dbc15f0 RD |
160 | list_for_each_entry(transport, &assoc->peer.transport_addr_list, |
161 | transports) { | |
5f242a13 | 162 | addr = &transport->ipaddr; |
1da177e4 | 163 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 164 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
165 | seq_printf(seq, "*"); |
166 | } | |
5f242a13 | 167 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
168 | } |
169 | } | |
170 | ||
bca735bd VY |
171 | static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
172 | { | |
49392e5e | 173 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
174 | return NULL; |
175 | ||
176 | if (*pos < 0) | |
177 | *pos = 0; | |
178 | ||
179 | if (*pos == 0) | |
180 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
181 | ||
bca735bd VY |
182 | return (void *)pos; |
183 | } | |
184 | ||
185 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
186 | { | |
bca735bd VY |
187 | } |
188 | ||
189 | ||
190 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
191 | { | |
49392e5e | 192 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
193 | return NULL; |
194 | ||
bca735bd VY |
195 | return pos; |
196 | } | |
197 | ||
198 | ||
1da177e4 LT |
199 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
200 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
201 | { | |
202 | struct sctp_hashbucket *head; | |
203 | struct sctp_ep_common *epb; | |
204 | struct sctp_endpoint *ep; | |
205 | struct sock *sk; | |
d970dbf8 | 206 | struct hlist_node *node; |
38b0e42a | 207 | int hash = *(loff_t *)v; |
bca735bd | 208 | |
49392e5e | 209 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
210 | return -ENOMEM; |
211 | ||
49392e5e | 212 | head = &sctp_ep_hashtable[hash]; |
bca735bd VY |
213 | sctp_local_bh_disable(); |
214 | read_lock(&head->lock); | |
d970dbf8 | 215 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
216 | ep = sctp_ep(epb); |
217 | sk = epb->sk; | |
6932f119 | 218 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 219 | continue; |
71338aa7 | 220 | seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, |
49392e5e | 221 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd | 222 | epb->bind_addr.port, |
a7cb5a49 EB |
223 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
224 | sock_i_ino(sk)); | |
bca735bd VY |
225 | |
226 | sctp_seq_dump_local_addrs(seq, epb); | |
227 | seq_printf(seq, "\n"); | |
1da177e4 | 228 | } |
bca735bd VY |
229 | read_unlock(&head->lock); |
230 | sctp_local_bh_enable(); | |
1da177e4 LT |
231 | |
232 | return 0; | |
233 | } | |
234 | ||
56b3d975 | 235 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
236 | .start = sctp_eps_seq_start, |
237 | .next = sctp_eps_seq_next, | |
238 | .stop = sctp_eps_seq_stop, | |
239 | .show = sctp_eps_seq_show, | |
240 | }; | |
241 | ||
242 | ||
1da177e4 LT |
243 | /* Initialize the seq file operations for 'eps' object. */ |
244 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
245 | { | |
13d782f6 EB |
246 | return seq_open_net(inode, file, &sctp_eps_ops, |
247 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
248 | } |
249 | ||
da7071d7 | 250 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
251 | .open = sctp_eps_seq_open, |
252 | .read = seq_read, | |
253 | .llseek = seq_lseek, | |
bca735bd | 254 | .release = seq_release, |
1da177e4 LT |
255 | }; |
256 | ||
257 | /* Set up the proc fs entry for 'eps' object. */ | |
13d782f6 | 258 | int __net_init sctp_eps_proc_init(struct net *net) |
1da177e4 LT |
259 | { |
260 | struct proc_dir_entry *p; | |
261 | ||
13d782f6 EB |
262 | p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp, |
263 | &sctp_eps_seq_fops); | |
1da177e4 LT |
264 | if (!p) |
265 | return -ENOMEM; | |
266 | ||
1da177e4 LT |
267 | return 0; |
268 | } | |
269 | ||
270 | /* Cleanup the proc fs entry for 'eps' object. */ | |
13d782f6 | 271 | void sctp_eps_proc_exit(struct net *net) |
1da177e4 | 272 | { |
13d782f6 | 273 | remove_proc_entry("eps", net->sctp.proc_net_sctp); |
1da177e4 LT |
274 | } |
275 | ||
bca735bd VY |
276 | |
277 | static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) | |
278 | { | |
49392e5e | 279 | if (*pos >= sctp_assoc_hashsize) |
bca735bd VY |
280 | return NULL; |
281 | ||
282 | if (*pos < 0) | |
283 | *pos = 0; | |
284 | ||
285 | if (*pos == 0) | |
58fbbed4 NH |
286 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
287 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
288 | "RPORT LADDRS <-> RADDRS " | |
289 | "HBINT INS OUTS MAXRT T1X T2X RTXC\n"); | |
bca735bd | 290 | |
bca735bd VY |
291 | return (void *)pos; |
292 | } | |
293 | ||
294 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
295 | { | |
bca735bd VY |
296 | } |
297 | ||
298 | ||
299 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
300 | { | |
49392e5e | 301 | if (++*pos >= sctp_assoc_hashsize) |
bca735bd VY |
302 | return NULL; |
303 | ||
bca735bd VY |
304 | return pos; |
305 | } | |
306 | ||
1da177e4 LT |
307 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
308 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
309 | { | |
310 | struct sctp_hashbucket *head; | |
311 | struct sctp_ep_common *epb; | |
312 | struct sctp_association *assoc; | |
313 | struct sock *sk; | |
d970dbf8 | 314 | struct hlist_node *node; |
38b0e42a | 315 | int hash = *(loff_t *)v; |
bca735bd | 316 | |
49392e5e | 317 | if (hash >= sctp_assoc_hashsize) |
bca735bd VY |
318 | return -ENOMEM; |
319 | ||
49392e5e | 320 | head = &sctp_assoc_hashtable[hash]; |
bca735bd VY |
321 | sctp_local_bh_disable(); |
322 | read_lock(&head->lock); | |
d970dbf8 | 323 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
324 | assoc = sctp_assoc(epb); |
325 | sk = epb->sk; | |
6932f119 | 326 | if (!net_eq(sock_net(sk), seq_file_net(seq))) |
13d782f6 | 327 | continue; |
bca735bd | 328 | seq_printf(seq, |
71338aa7 | 329 | "%8pK %8pK %-3d %-3d %-2d %-4d " |
30e93560 | 330 | "%4d %8d %8d %7d %5lu %-5d %5d ", |
bca735bd | 331 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, |
58fbbed4 NH |
332 | assoc->state, hash, |
333 | assoc->assoc_id, | |
bca735bd | 334 | assoc->sndbuf_used, |
6aa2551c | 335 | atomic_read(&assoc->rmem_alloc), |
a7cb5a49 EB |
336 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)), |
337 | sock_i_ino(sk), | |
bca735bd | 338 | epb->bind_addr.port, |
30e93560 | 339 | assoc->peer.port); |
bca735bd VY |
340 | seq_printf(seq, " "); |
341 | sctp_seq_dump_local_addrs(seq, epb); | |
342 | seq_printf(seq, "<-> "); | |
343 | sctp_seq_dump_remote_addrs(seq, assoc); | |
30e93560 NH |
344 | seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ", |
345 | assoc->hbinterval, assoc->c.sinit_max_instreams, | |
346 | assoc->c.sinit_num_ostreams, assoc->max_retrans, | |
347 | assoc->init_retries, assoc->shutdown_retries, | |
348 | assoc->rtx_data_chunks); | |
bca735bd | 349 | seq_printf(seq, "\n"); |
1da177e4 | 350 | } |
bca735bd VY |
351 | read_unlock(&head->lock); |
352 | sctp_local_bh_enable(); | |
1da177e4 LT |
353 | |
354 | return 0; | |
355 | } | |
356 | ||
56b3d975 | 357 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
358 | .start = sctp_assocs_seq_start, |
359 | .next = sctp_assocs_seq_next, | |
360 | .stop = sctp_assocs_seq_stop, | |
361 | .show = sctp_assocs_seq_show, | |
362 | }; | |
363 | ||
1da177e4 LT |
364 | /* Initialize the seq file operations for 'assocs' object. */ |
365 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
366 | { | |
13d782f6 EB |
367 | return seq_open_net(inode, file, &sctp_assoc_ops, |
368 | sizeof(struct seq_net_private)); | |
1da177e4 LT |
369 | } |
370 | ||
da7071d7 | 371 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
372 | .open = sctp_assocs_seq_open, |
373 | .read = seq_read, | |
374 | .llseek = seq_lseek, | |
bca735bd | 375 | .release = seq_release, |
1da177e4 LT |
376 | }; |
377 | ||
378 | /* Set up the proc fs entry for 'assocs' object. */ | |
13d782f6 | 379 | int __net_init sctp_assocs_proc_init(struct net *net) |
1da177e4 LT |
380 | { |
381 | struct proc_dir_entry *p; | |
382 | ||
13d782f6 | 383 | p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp, |
459eea74 | 384 | &sctp_assocs_seq_fops); |
1da177e4 LT |
385 | if (!p) |
386 | return -ENOMEM; | |
387 | ||
1da177e4 LT |
388 | return 0; |
389 | } | |
390 | ||
391 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
13d782f6 | 392 | void sctp_assocs_proc_exit(struct net *net) |
1da177e4 | 393 | { |
13d782f6 | 394 | remove_proc_entry("assocs", net->sctp.proc_net_sctp); |
1da177e4 | 395 | } |
20c2c1fd NH |
396 | |
397 | static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos) | |
398 | { | |
399 | if (*pos >= sctp_assoc_hashsize) | |
400 | return NULL; | |
401 | ||
402 | if (*pos < 0) | |
403 | *pos = 0; | |
404 | ||
405 | if (*pos == 0) | |
406 | seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX " | |
407 | "REM_ADDR_RTX START\n"); | |
408 | ||
409 | return (void *)pos; | |
410 | } | |
411 | ||
412 | static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
413 | { | |
414 | if (++*pos >= sctp_assoc_hashsize) | |
415 | return NULL; | |
416 | ||
417 | return pos; | |
418 | } | |
419 | ||
420 | static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v) | |
421 | { | |
20c2c1fd NH |
422 | } |
423 | ||
424 | static int sctp_remaddr_seq_show(struct seq_file *seq, void *v) | |
425 | { | |
426 | struct sctp_hashbucket *head; | |
427 | struct sctp_ep_common *epb; | |
428 | struct sctp_association *assoc; | |
429 | struct hlist_node *node; | |
430 | struct sctp_transport *tsp; | |
431 | int hash = *(loff_t *)v; | |
432 | ||
433 | if (hash >= sctp_assoc_hashsize) | |
434 | return -ENOMEM; | |
435 | ||
436 | head = &sctp_assoc_hashtable[hash]; | |
437 | sctp_local_bh_disable(); | |
438 | read_lock(&head->lock); | |
439 | sctp_for_each_hentry(epb, node, &head->chain) { | |
6932f119 | 440 | if (!net_eq(sock_net(epb->sk), seq_file_net(seq))) |
13d782f6 | 441 | continue; |
20c2c1fd NH |
442 | assoc = sctp_assoc(epb); |
443 | list_for_each_entry(tsp, &assoc->peer.transport_addr_list, | |
444 | transports) { | |
445 | /* | |
446 | * The remote address (ADDR) | |
447 | */ | |
448 | tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr); | |
449 | seq_printf(seq, " "); | |
450 | ||
451 | /* | |
452 | * The association ID (ASSOC_ID) | |
453 | */ | |
454 | seq_printf(seq, "%d ", tsp->asoc->assoc_id); | |
455 | ||
456 | /* | |
457 | * If the Heartbeat is active (HB_ACT) | |
458 | * Note: 1 = Active, 0 = Inactive | |
459 | */ | |
460 | seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer)); | |
461 | ||
462 | /* | |
463 | * Retransmit time out (RTO) | |
464 | */ | |
465 | seq_printf(seq, "%lu ", tsp->rto); | |
466 | ||
467 | /* | |
468 | * Maximum path retransmit count (PATH_MAX_RTX) | |
469 | */ | |
470 | seq_printf(seq, "%d ", tsp->pathmaxrxt); | |
471 | ||
472 | /* | |
473 | * remote address retransmit count (REM_ADDR_RTX) | |
474 | * Note: We don't have a way to tally this at the moment | |
475 | * so lets just leave it as zero for the moment | |
476 | */ | |
477 | seq_printf(seq, "0 "); | |
478 | ||
479 | /* | |
480 | * remote address start time (START). This is also not | |
481 | * currently implemented, but we can record it with a | |
482 | * jiffies marker in a subsequent patch | |
483 | */ | |
484 | seq_printf(seq, "0"); | |
485 | ||
486 | seq_printf(seq, "\n"); | |
487 | } | |
488 | } | |
489 | ||
490 | read_unlock(&head->lock); | |
491 | sctp_local_bh_enable(); | |
492 | ||
493 | return 0; | |
494 | ||
495 | } | |
496 | ||
497 | static const struct seq_operations sctp_remaddr_ops = { | |
498 | .start = sctp_remaddr_seq_start, | |
499 | .next = sctp_remaddr_seq_next, | |
500 | .stop = sctp_remaddr_seq_stop, | |
501 | .show = sctp_remaddr_seq_show, | |
502 | }; | |
503 | ||
504 | /* Cleanup the proc fs entry for 'remaddr' object. */ | |
13d782f6 | 505 | void sctp_remaddr_proc_exit(struct net *net) |
20c2c1fd | 506 | { |
13d782f6 | 507 | remove_proc_entry("remaddr", net->sctp.proc_net_sctp); |
20c2c1fd NH |
508 | } |
509 | ||
510 | static int sctp_remaddr_seq_open(struct inode *inode, struct file *file) | |
511 | { | |
13d782f6 EB |
512 | return seq_open_net(inode, file, &sctp_remaddr_ops, |
513 | sizeof(struct seq_net_private)); | |
20c2c1fd NH |
514 | } |
515 | ||
516 | static const struct file_operations sctp_remaddr_seq_fops = { | |
517 | .open = sctp_remaddr_seq_open, | |
518 | .read = seq_read, | |
519 | .llseek = seq_lseek, | |
520 | .release = seq_release, | |
521 | }; | |
522 | ||
13d782f6 | 523 | int __net_init sctp_remaddr_proc_init(struct net *net) |
20c2c1fd NH |
524 | { |
525 | struct proc_dir_entry *p; | |
526 | ||
13d782f6 EB |
527 | p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp, |
528 | &sctp_remaddr_seq_fops); | |
20c2c1fd NH |
529 | if (!p) |
530 | return -ENOMEM; | |
20c2c1fd NH |
531 | return 0; |
532 | } |