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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 | ||
111 | p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp); | |
112 | if (!p) | |
113 | return -ENOMEM; | |
114 | ||
115 | p->proc_fops = &sctp_snmp_seq_fops; | |
116 | ||
117 | return 0; | |
118 | } | |
119 | ||
120 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
121 | void sctp_snmp_proc_exit(void) | |
122 | { | |
123 | remove_proc_entry("snmp", proc_net_sctp); | |
124 | } | |
125 | ||
126 | /* Dump local addresses of an association/endpoint. */ | |
127 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
128 | { | |
129 | struct list_head *pos; | |
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 | ||
1da177e4 LT |
142 | list_for_each(pos, &epb->bind_addr.address_list) { |
143 | laddr = list_entry(pos, struct sctp_sockaddr_entry, list); | |
5f242a13 | 144 | addr = &laddr->a; |
1da177e4 | 145 | af = sctp_get_af_specific(addr->sa.sa_family); |
bca735bd VY |
146 | if (primary && af->cmp_addr(addr, primary)) { |
147 | seq_printf(seq, "*"); | |
148 | } | |
5f242a13 | 149 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
150 | } |
151 | } | |
152 | ||
153 | /* Dump remote addresses of an association. */ | |
154 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
155 | { | |
156 | struct list_head *pos; | |
157 | struct sctp_transport *transport; | |
bca735bd | 158 | union sctp_addr *addr, *primary; |
1da177e4 LT |
159 | struct sctp_af *af; |
160 | ||
acd2bc96 | 161 | primary = &assoc->peer.primary_addr; |
1da177e4 LT |
162 | list_for_each(pos, &assoc->peer.transport_addr_list) { |
163 | transport = list_entry(pos, struct sctp_transport, transports); | |
5f242a13 | 164 | addr = &transport->ipaddr; |
1da177e4 | 165 | af = sctp_get_af_specific(addr->sa.sa_family); |
acd2bc96 | 166 | if (af->cmp_addr(addr, primary)) { |
bca735bd VY |
167 | seq_printf(seq, "*"); |
168 | } | |
5f242a13 | 169 | af->seq_dump_addr(seq, addr); |
1da177e4 LT |
170 | } |
171 | } | |
172 | ||
bca735bd VY |
173 | static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
174 | { | |
49392e5e | 175 | if (*pos >= sctp_ep_hashsize) |
bca735bd VY |
176 | return NULL; |
177 | ||
178 | if (*pos < 0) | |
179 | *pos = 0; | |
180 | ||
181 | if (*pos == 0) | |
182 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
183 | ||
bca735bd VY |
184 | return (void *)pos; |
185 | } | |
186 | ||
187 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
188 | { | |
189 | return; | |
190 | } | |
191 | ||
192 | ||
193 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
194 | { | |
49392e5e | 195 | if (++*pos >= sctp_ep_hashsize) |
bca735bd VY |
196 | return NULL; |
197 | ||
bca735bd VY |
198 | return pos; |
199 | } | |
200 | ||
201 | ||
1da177e4 LT |
202 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
203 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
204 | { | |
205 | struct sctp_hashbucket *head; | |
206 | struct sctp_ep_common *epb; | |
207 | struct sctp_endpoint *ep; | |
208 | struct sock *sk; | |
d970dbf8 | 209 | struct hlist_node *node; |
38b0e42a | 210 | int hash = *(loff_t *)v; |
bca735bd | 211 | |
49392e5e | 212 | if (hash >= sctp_ep_hashsize) |
bca735bd VY |
213 | return -ENOMEM; |
214 | ||
49392e5e | 215 | head = &sctp_ep_hashtable[hash]; |
bca735bd VY |
216 | sctp_local_bh_disable(); |
217 | read_lock(&head->lock); | |
d970dbf8 | 218 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
219 | ep = sctp_ep(epb); |
220 | sk = epb->sk; | |
221 | seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, | |
49392e5e | 222 | sctp_sk(sk)->type, sk->sk_state, hash, |
bca735bd VY |
223 | epb->bind_addr.port, |
224 | sock_i_uid(sk), sock_i_ino(sk)); | |
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 | { | |
bca735bd | 246 | return seq_open(file, &sctp_eps_ops); |
1da177e4 LT |
247 | } |
248 | ||
da7071d7 | 249 | static const struct file_operations sctp_eps_seq_fops = { |
1da177e4 LT |
250 | .open = sctp_eps_seq_open, |
251 | .read = seq_read, | |
252 | .llseek = seq_lseek, | |
bca735bd | 253 | .release = seq_release, |
1da177e4 LT |
254 | }; |
255 | ||
256 | /* Set up the proc fs entry for 'eps' object. */ | |
257 | int __init sctp_eps_proc_init(void) | |
258 | { | |
259 | struct proc_dir_entry *p; | |
260 | ||
261 | p = create_proc_entry("eps", S_IRUGO, proc_net_sctp); | |
262 | if (!p) | |
263 | return -ENOMEM; | |
264 | ||
265 | p->proc_fops = &sctp_eps_seq_fops; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | /* Cleanup the proc fs entry for 'eps' object. */ | |
271 | void sctp_eps_proc_exit(void) | |
272 | { | |
273 | remove_proc_entry("eps", proc_net_sctp); | |
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) | |
286 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
287 | "RPORT LADDRS <-> RADDRS\n"); | |
288 | ||
bca735bd VY |
289 | return (void *)pos; |
290 | } | |
291 | ||
292 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
293 | { | |
294 | return; | |
295 | } | |
296 | ||
297 | ||
298 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
299 | { | |
49392e5e | 300 | if (++*pos >= sctp_assoc_hashsize) |
bca735bd VY |
301 | return NULL; |
302 | ||
bca735bd VY |
303 | return pos; |
304 | } | |
305 | ||
1da177e4 LT |
306 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
307 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
308 | { | |
309 | struct sctp_hashbucket *head; | |
310 | struct sctp_ep_common *epb; | |
311 | struct sctp_association *assoc; | |
312 | struct sock *sk; | |
d970dbf8 | 313 | struct hlist_node *node; |
38b0e42a | 314 | int hash = *(loff_t *)v; |
bca735bd | 315 | |
49392e5e | 316 | if (hash >= sctp_assoc_hashsize) |
bca735bd VY |
317 | return -ENOMEM; |
318 | ||
49392e5e | 319 | head = &sctp_assoc_hashtable[hash]; |
bca735bd VY |
320 | sctp_local_bh_disable(); |
321 | read_lock(&head->lock); | |
d970dbf8 | 322 | sctp_for_each_hentry(epb, node, &head->chain) { |
bca735bd VY |
323 | assoc = sctp_assoc(epb); |
324 | sk = epb->sk; | |
325 | seq_printf(seq, | |
326 | "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ", | |
327 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, | |
49392e5e | 328 | assoc->state, hash, assoc->assoc_id, |
bca735bd | 329 | assoc->sndbuf_used, |
6aa2551c | 330 | atomic_read(&assoc->rmem_alloc), |
bca735bd VY |
331 | sock_i_uid(sk), sock_i_ino(sk), |
332 | epb->bind_addr.port, | |
333 | assoc->peer.port); | |
334 | ||
335 | seq_printf(seq, " "); | |
336 | sctp_seq_dump_local_addrs(seq, epb); | |
337 | seq_printf(seq, "<-> "); | |
338 | sctp_seq_dump_remote_addrs(seq, assoc); | |
339 | seq_printf(seq, "\n"); | |
1da177e4 | 340 | } |
bca735bd VY |
341 | read_unlock(&head->lock); |
342 | sctp_local_bh_enable(); | |
1da177e4 LT |
343 | |
344 | return 0; | |
345 | } | |
346 | ||
56b3d975 | 347 | static const struct seq_operations sctp_assoc_ops = { |
bca735bd VY |
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 | ||
1da177e4 LT |
354 | /* Initialize the seq file operations for 'assocs' object. */ |
355 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
356 | { | |
bca735bd | 357 | return seq_open(file, &sctp_assoc_ops); |
1da177e4 LT |
358 | } |
359 | ||
da7071d7 | 360 | static const struct file_operations sctp_assocs_seq_fops = { |
1da177e4 LT |
361 | .open = sctp_assocs_seq_open, |
362 | .read = seq_read, | |
363 | .llseek = seq_lseek, | |
bca735bd | 364 | .release = seq_release, |
1da177e4 LT |
365 | }; |
366 | ||
367 | /* Set up the proc fs entry for 'assocs' object. */ | |
368 | int __init sctp_assocs_proc_init(void) | |
369 | { | |
370 | struct proc_dir_entry *p; | |
371 | ||
372 | p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp); | |
373 | if (!p) | |
374 | return -ENOMEM; | |
375 | ||
376 | p->proc_fops = &sctp_assocs_seq_fops; | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
382 | void sctp_assocs_proc_exit(void) | |
383 | { | |
384 | remove_proc_entry("assocs", proc_net_sctp); | |
385 | } |