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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 LT |
42 | |
43 | static struct snmp_mib sctp_snmp_list[] = { | |
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, | |
3f5340a6 | 86 | snmp_fold_field((void **)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 | { | |
127 | struct list_head *pos; | |
bca735bd | 128 | struct sctp_association *asoc; |
1da177e4 | 129 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
130 | struct sctp_transport *peer; |
131 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
132 | struct sctp_af *af; |
133 | ||
bca735bd VY |
134 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
135 | asoc = sctp_assoc(epb); | |
136 | peer = asoc->peer.primary_path; | |
5f242a13 | 137 | primary = &peer->saddr; |
bca735bd VY |
138 | } |
139 | ||
1da177e4 LT |
140 | list_for_each(pos, &epb->bind_addr.address_list) { |
141 | laddr = list_entry(pos, struct sctp_sockaddr_entry, list); | |
5f242a13 | 142 | addr = &laddr->a; |
1da177e4 | 143 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
144 | if (primary && af->cmp_addr(addr, primary)) { |
145 | seq_printf(seq, "*"); | |
146 | } | |
5f242a13 | 147 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
148 | } |
149 | } | |
150 | ||
151 | /* Dump remote addresses of an association. */ | |
152 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
153 | { | |
154 | struct list_head *pos; | |
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; |
1da177e4 LT |
160 | list_for_each(pos, &assoc->peer.transport_addr_list) { |
161 | transport = list_entry(pos, struct sctp_transport, 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 | { | |
187 | return; | |
188 | } | |
189 | ||
190 | ||
191 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
192 | { | |
49392e5e | 193 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
194 | return NULL; |
195 | ||
bca735bd VY |
196 | return pos; |
197 | } | |
198 | ||
199 | ||
1da177e4 LT |
200 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
201 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
202 | { | |
203 | struct sctp_hashbucket *head; | |
204 | struct sctp_ep_common *epb; | |
205 | struct sctp_endpoint *ep; | |
206 | struct sock *sk; | |
d970dbf8 | 207 | struct hlist_node *node; |
38b0e42a | 208 | int hash = *(loff_t *)v; |
bca735bd | 209 | |
49392e5e | 210 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
211 | return -ENOMEM; |
212 | ||
49392e5e | 213 | head = &sctp_ep_hashtable[hash]; |
bca735bd VY |
214 | sctp_local_bh_disable(); |
215 | read_lock(&head->lock); | |
d970dbf8 | 216 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
217 | ep = sctp_ep(epb); |
218 | sk = epb->sk; | |
219 | seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, | |
49392e5e | 220 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd VY |
221 | epb->bind_addr.port, |
222 | sock_i_uid(sk), sock_i_ino(sk)); | |
223 | ||
224 | sctp_seq_dump_local_addrs(seq, epb); | |
225 | seq_printf(seq, "\n"); | |
1da177e4 | 226 | } |
bca735bd VY |
227 | read_unlock(&head->lock); |
228 | sctp_local_bh_enable(); | |
1da177e4 LT |
229 | |
230 | return 0; | |
231 | } | |
232 | ||
56b3d975 | 233 | static const struct seq_operations sctp_eps_ops = { |
bca735bd VY |
234 | .start = sctp_eps_seq_start, |
235 | .next = sctp_eps_seq_next, | |
236 | .stop = sctp_eps_seq_stop, | |
237 | .show = sctp_eps_seq_show, | |
238 | }; | |
239 | ||
240 | ||
1da177e4 LT |
241 | /* Initialize the seq file operations for 'eps' object. */ |
242 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
243 | { | |
bca735bd | 244 | return seq_open(file, &sctp_eps_ops); |
1da177e4 LT |
245 | } |
246 | ||
da7071d7 | 247 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
248 | .open = sctp_eps_seq_open, |
249 | .read = seq_read, | |
250 | .llseek = seq_lseek, | |
bca735bd | 251 | .release = seq_release, |
1da177e4 LT |
252 | }; |
253 | ||
254 | /* Set up the proc fs entry for 'eps' object. */ | |
255 | int __init sctp_eps_proc_init(void) | |
256 | { | |
257 | struct proc_dir_entry *p; | |
258 | ||
459eea74 | 259 | p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops); |
1da177e4 LT |
260 | if (!p) |
261 | return -ENOMEM; | |
262 | ||
1da177e4 LT |
263 | return 0; |
264 | } | |
265 | ||
266 | /* Cleanup the proc fs entry for 'eps' object. */ | |
267 | void sctp_eps_proc_exit(void) | |
268 | { | |
269 | remove_proc_entry("eps", proc_net_sctp); | |
270 | } | |
271 | ||
bca735bd VY |
272 | |
273 | static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) | |
274 | { | |
49392e5e | 275 | if (*pos >= sctp_assoc_hashsize) |
bca735bd VY |
276 | return NULL; |
277 | ||
278 | if (*pos < 0) | |
279 | *pos = 0; | |
280 | ||
281 | if (*pos == 0) | |
58fbbed4 NH |
282 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT " |
283 | "ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
284 | "RPORT LADDRS <-> RADDRS " | |
285 | "HBINT INS OUTS MAXRT T1X T2X RTXC\n"); | |
bca735bd | 286 | |
bca735bd VY |
287 | return (void *)pos; |
288 | } | |
289 | ||
290 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
291 | { | |
292 | return; | |
293 | } | |
294 | ||
295 | ||
296 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
297 | { | |
49392e5e | 298 | if (++*pos >= sctp_assoc_hashsize) |
bca735bd VY |
299 | return NULL; |
300 | ||
bca735bd VY |
301 | return pos; |
302 | } | |
303 | ||
1da177e4 LT |
304 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
305 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
306 | { | |
307 | struct sctp_hashbucket *head; | |
308 | struct sctp_ep_common *epb; | |
309 | struct sctp_association *assoc; | |
310 | struct sock *sk; | |
d970dbf8 | 311 | struct hlist_node *node; |
38b0e42a | 312 | int hash = *(loff_t *)v; |
bca735bd | 313 | |
49392e5e | 314 | if (hash >= sctp_assoc_hashsize) |
bca735bd VY |
315 | return -ENOMEM; |
316 | ||
49392e5e | 317 | head = &sctp_assoc_hashtable[hash]; |
bca735bd VY |
318 | sctp_local_bh_disable(); |
319 | read_lock(&head->lock); | |
d970dbf8 | 320 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
321 | assoc = sctp_assoc(epb); |
322 | sk = epb->sk; | |
323 | seq_printf(seq, | |
58fbbed4 NH |
324 | "%8p %8p %-3d %-3d %-2d %-4d " |
325 | "%4d %8d %8d %7d %5lu %-5d %5d " | |
f0fd56ed | 326 | "%8lu %5d %5d %4d %4d %4d %8d ", |
bca735bd | 327 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, |
58fbbed4 NH |
328 | assoc->state, hash, |
329 | assoc->assoc_id, | |
bca735bd | 330 | assoc->sndbuf_used, |
6aa2551c | 331 | atomic_read(&assoc->rmem_alloc), |
bca735bd VY |
332 | sock_i_uid(sk), sock_i_ino(sk), |
333 | epb->bind_addr.port, | |
58fbbed4 NH |
334 | assoc->peer.port, |
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); | |
bca735bd VY |
339 | seq_printf(seq, " "); |
340 | sctp_seq_dump_local_addrs(seq, epb); | |
341 | seq_printf(seq, "<-> "); | |
342 | sctp_seq_dump_remote_addrs(seq, assoc); | |
343 | seq_printf(seq, "\n"); | |
1da177e4 | 344 | } |
bca735bd VY |
345 | read_unlock(&head->lock); |
346 | sctp_local_bh_enable(); | |
1da177e4 LT |
347 | |
348 | return 0; | |
349 | } | |
350 | ||
56b3d975 | 351 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
352 | .start = sctp_assocs_seq_start, |
353 | .next = sctp_assocs_seq_next, | |
354 | .stop = sctp_assocs_seq_stop, | |
355 | .show = sctp_assocs_seq_show, | |
356 | }; | |
357 | ||
1da177e4 LT |
358 | /* Initialize the seq file operations for 'assocs' object. */ |
359 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
360 | { | |
bca735bd | 361 | return seq_open(file, &sctp_assoc_ops); |
1da177e4 LT |
362 | } |
363 | ||
da7071d7 | 364 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
365 | .open = sctp_assocs_seq_open, |
366 | .read = seq_read, | |
367 | .llseek = seq_lseek, | |
bca735bd | 368 | .release = seq_release, |
1da177e4 LT |
369 | }; |
370 | ||
371 | /* Set up the proc fs entry for 'assocs' object. */ | |
372 | int __init sctp_assocs_proc_init(void) | |
373 | { | |
374 | struct proc_dir_entry *p; | |
375 | ||
459eea74 PE |
376 | p = proc_create("assocs", S_IRUGO, proc_net_sctp, |
377 | &sctp_assocs_seq_fops); | |
1da177e4 LT |
378 | if (!p) |
379 | return -ENOMEM; | |
380 | ||
1da177e4 LT |
381 | return 0; |
382 | } | |
383 | ||
384 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
385 | void sctp_assocs_proc_exit(void) | |
386 | { | |
387 | remove_proc_entry("assocs", proc_net_sctp); | |
388 | } |