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1da177e4 LT |
1 | /* SCTP kernel reference Implementation |
2 | * Copyright (c) 2003 International Business Machines, Corp. | |
3 | * | |
4 | * This file is part of the SCTP kernel reference Implementation | |
5 | * | |
6 | * The SCTP reference 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 | * The SCTP reference 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 <net/sctp/sctp.h> | |
41 | ||
42 | static struct snmp_mib sctp_snmp_list[] = { | |
43 | SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB), | |
44 | SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS), | |
45 | SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS), | |
46 | SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS), | |
47 | SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS), | |
48 | SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES), | |
49 | SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS), | |
50 | SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS), | |
51 | SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS), | |
52 | SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS), | |
53 | SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS), | |
54 | SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS), | |
55 | SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS), | |
56 | SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS), | |
57 | SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS), | |
58 | SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS), | |
59 | SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS), | |
60 | }; | |
61 | ||
62 | /* Return the current value of a particular entry in the mib by adding its | |
63 | * per cpu counters. | |
64 | */ | |
65 | static unsigned long | |
66 | fold_field(void *mib[], int nr) | |
67 | { | |
68 | unsigned long res = 0; | |
69 | int i; | |
70 | ||
71 | for (i = 0; i < NR_CPUS; i++) { | |
72 | if (!cpu_possible(i)) | |
73 | continue; | |
74 | res += | |
75 | *((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) + | |
76 | sizeof (unsigned long) * nr)); | |
77 | res += | |
78 | *((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) + | |
79 | sizeof (unsigned long) * nr)); | |
80 | } | |
81 | return res; | |
82 | } | |
83 | ||
84 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ | |
85 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) | |
86 | { | |
87 | int i; | |
88 | ||
89 | for (i = 0; sctp_snmp_list[i].name != NULL; i++) | |
90 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, | |
91 | fold_field((void **)sctp_statistics, | |
92 | sctp_snmp_list[i].entry)); | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | /* Initialize the seq file operations for 'snmp' object. */ | |
98 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
99 | { | |
100 | return single_open(file, sctp_snmp_seq_show, NULL); | |
101 | } | |
102 | ||
103 | static struct file_operations sctp_snmp_seq_fops = { | |
104 | .owner = THIS_MODULE, | |
105 | .open = sctp_snmp_seq_open, | |
106 | .read = seq_read, | |
107 | .llseek = seq_lseek, | |
108 | .release = single_release, | |
109 | }; | |
110 | ||
111 | /* Set up the proc fs entry for 'snmp' object. */ | |
112 | int __init sctp_snmp_proc_init(void) | |
113 | { | |
114 | struct proc_dir_entry *p; | |
115 | ||
116 | p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp); | |
117 | if (!p) | |
118 | return -ENOMEM; | |
119 | ||
120 | p->proc_fops = &sctp_snmp_seq_fops; | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
126 | void sctp_snmp_proc_exit(void) | |
127 | { | |
128 | remove_proc_entry("snmp", proc_net_sctp); | |
129 | } | |
130 | ||
131 | /* Dump local addresses of an association/endpoint. */ | |
132 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
133 | { | |
134 | struct list_head *pos; | |
bca735bd | 135 | struct sctp_association *asoc; |
1da177e4 | 136 | struct sctp_sockaddr_entry *laddr; |
bca735bd VY |
137 | struct sctp_transport *peer; |
138 | union sctp_addr *addr, *primary = NULL; | |
1da177e4 LT |
139 | struct sctp_af *af; |
140 | ||
bca735bd VY |
141 | if (epb->type == SCTP_EP_TYPE_ASSOCIATION) { |
142 | asoc = sctp_assoc(epb); | |
143 | peer = asoc->peer.primary_path; | |
144 | primary = &peer->saddr; | |
145 | } | |
146 | ||
1da177e4 LT |
147 | list_for_each(pos, &epb->bind_addr.address_list) { |
148 | laddr = list_entry(pos, struct sctp_sockaddr_entry, list); | |
149 | addr = (union sctp_addr *)&laddr->a; | |
150 | af = sctp_get_af_specific(addr->sa.sa_family); | |
bca735bd VY |
151 | if (primary && af->cmp_addr(addr, primary)) { |
152 | seq_printf(seq, "*"); | |
153 | } | |
1da177e4 LT |
154 | af->seq_dump_addr(seq, addr); |
155 | } | |
156 | } | |
157 | ||
158 | /* Dump remote addresses of an association. */ | |
159 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
160 | { | |
161 | struct list_head *pos; | |
162 | struct sctp_transport *transport; | |
bca735bd | 163 | union sctp_addr *addr, *primary; |
1da177e4 LT |
164 | struct sctp_af *af; |
165 | ||
bca735bd | 166 | primary = &(assoc->peer.primary_addr); |
1da177e4 LT |
167 | list_for_each(pos, &assoc->peer.transport_addr_list) { |
168 | transport = list_entry(pos, struct sctp_transport, transports); | |
169 | addr = (union sctp_addr *)&transport->ipaddr; | |
170 | af = sctp_get_af_specific(addr->sa.sa_family); | |
bca735bd VY |
171 | if (af->cmp_addr(addr, primary)) { |
172 | seq_printf(seq, "*"); | |
173 | } | |
1da177e4 LT |
174 | af->seq_dump_addr(seq, addr); |
175 | } | |
176 | } | |
177 | ||
bca735bd VY |
178 | static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos) |
179 | { | |
180 | if (*pos > sctp_ep_hashsize) | |
181 | return NULL; | |
182 | ||
183 | if (*pos < 0) | |
184 | *pos = 0; | |
185 | ||
186 | if (*pos == 0) | |
187 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n"); | |
188 | ||
189 | ++*pos; | |
190 | ||
191 | return (void *)pos; | |
192 | } | |
193 | ||
194 | static void sctp_eps_seq_stop(struct seq_file *seq, void *v) | |
195 | { | |
196 | return; | |
197 | } | |
198 | ||
199 | ||
200 | static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
201 | { | |
202 | if (*pos > sctp_ep_hashsize) | |
203 | return NULL; | |
204 | ||
205 | ++*pos; | |
206 | ||
207 | return pos; | |
208 | } | |
209 | ||
210 | ||
1da177e4 LT |
211 | /* Display sctp endpoints (/proc/net/sctp/eps). */ |
212 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
213 | { | |
214 | struct sctp_hashbucket *head; | |
215 | struct sctp_ep_common *epb; | |
216 | struct sctp_endpoint *ep; | |
217 | struct sock *sk; | |
bca735bd VY |
218 | int hash = *(int *)v; |
219 | ||
220 | if (hash > sctp_ep_hashsize) | |
221 | return -ENOMEM; | |
222 | ||
223 | head = &sctp_ep_hashtable[hash-1]; | |
224 | sctp_local_bh_disable(); | |
225 | read_lock(&head->lock); | |
226 | for (epb = head->chain; epb; epb = epb->next) { | |
227 | ep = sctp_ep(epb); | |
228 | sk = epb->sk; | |
229 | seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk, | |
230 | sctp_sk(sk)->type, sk->sk_state, hash-1, | |
231 | epb->bind_addr.port, | |
232 | sock_i_uid(sk), sock_i_ino(sk)); | |
233 | ||
234 | sctp_seq_dump_local_addrs(seq, epb); | |
235 | seq_printf(seq, "\n"); | |
1da177e4 | 236 | } |
bca735bd VY |
237 | read_unlock(&head->lock); |
238 | sctp_local_bh_enable(); | |
1da177e4 LT |
239 | |
240 | return 0; | |
241 | } | |
242 | ||
bca735bd VY |
243 | static struct seq_operations sctp_eps_ops = { |
244 | .start = sctp_eps_seq_start, | |
245 | .next = sctp_eps_seq_next, | |
246 | .stop = sctp_eps_seq_stop, | |
247 | .show = sctp_eps_seq_show, | |
248 | }; | |
249 | ||
250 | ||
1da177e4 LT |
251 | /* Initialize the seq file operations for 'eps' object. */ |
252 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
253 | { | |
bca735bd | 254 | return seq_open(file, &sctp_eps_ops); |
1da177e4 LT |
255 | } |
256 | ||
257 | static struct file_operations sctp_eps_seq_fops = { | |
258 | .open = sctp_eps_seq_open, | |
259 | .read = seq_read, | |
260 | .llseek = seq_lseek, | |
bca735bd | 261 | .release = seq_release, |
1da177e4 LT |
262 | }; |
263 | ||
264 | /* Set up the proc fs entry for 'eps' object. */ | |
265 | int __init sctp_eps_proc_init(void) | |
266 | { | |
267 | struct proc_dir_entry *p; | |
268 | ||
269 | p = create_proc_entry("eps", S_IRUGO, proc_net_sctp); | |
270 | if (!p) | |
271 | return -ENOMEM; | |
272 | ||
273 | p->proc_fops = &sctp_eps_seq_fops; | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | /* Cleanup the proc fs entry for 'eps' object. */ | |
279 | void sctp_eps_proc_exit(void) | |
280 | { | |
281 | remove_proc_entry("eps", proc_net_sctp); | |
282 | } | |
283 | ||
bca735bd VY |
284 | |
285 | static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos) | |
286 | { | |
287 | if (*pos > sctp_assoc_hashsize) | |
288 | return NULL; | |
289 | ||
290 | if (*pos < 0) | |
291 | *pos = 0; | |
292 | ||
293 | if (*pos == 0) | |
294 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT " | |
295 | "RPORT LADDRS <-> RADDRS\n"); | |
296 | ||
297 | ++*pos; | |
298 | ||
299 | return (void *)pos; | |
300 | } | |
301 | ||
302 | static void sctp_assocs_seq_stop(struct seq_file *seq, void *v) | |
303 | { | |
304 | return; | |
305 | } | |
306 | ||
307 | ||
308 | static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
309 | { | |
310 | if (*pos > sctp_assoc_hashsize) | |
311 | return NULL; | |
312 | ||
313 | ++*pos; | |
314 | ||
315 | return pos; | |
316 | } | |
317 | ||
1da177e4 LT |
318 | /* Display sctp associations (/proc/net/sctp/assocs). */ |
319 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
320 | { | |
321 | struct sctp_hashbucket *head; | |
322 | struct sctp_ep_common *epb; | |
323 | struct sctp_association *assoc; | |
324 | struct sock *sk; | |
bca735bd VY |
325 | int hash = *(int *)v; |
326 | ||
327 | if (hash > sctp_assoc_hashsize) | |
328 | return -ENOMEM; | |
329 | ||
330 | head = &sctp_assoc_hashtable[hash-1]; | |
331 | sctp_local_bh_disable(); | |
332 | read_lock(&head->lock); | |
333 | for (epb = head->chain; epb; epb = epb->next) { | |
334 | assoc = sctp_assoc(epb); | |
335 | sk = epb->sk; | |
336 | seq_printf(seq, | |
337 | "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ", | |
338 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, | |
339 | assoc->state, hash-1, assoc->assoc_id, | |
340 | (sk->sk_rcvbuf - assoc->rwnd), | |
341 | assoc->sndbuf_used, | |
342 | sock_i_uid(sk), sock_i_ino(sk), | |
343 | epb->bind_addr.port, | |
344 | assoc->peer.port); | |
345 | ||
346 | seq_printf(seq, " "); | |
347 | sctp_seq_dump_local_addrs(seq, epb); | |
348 | seq_printf(seq, "<-> "); | |
349 | sctp_seq_dump_remote_addrs(seq, assoc); | |
350 | seq_printf(seq, "\n"); | |
1da177e4 | 351 | } |
bca735bd VY |
352 | read_unlock(&head->lock); |
353 | sctp_local_bh_enable(); | |
1da177e4 LT |
354 | |
355 | return 0; | |
356 | } | |
357 | ||
bca735bd VY |
358 | static struct seq_operations sctp_assoc_ops = { |
359 | .start = sctp_assocs_seq_start, | |
360 | .next = sctp_assocs_seq_next, | |
361 | .stop = sctp_assocs_seq_stop, | |
362 | .show = sctp_assocs_seq_show, | |
363 | }; | |
364 | ||
1da177e4 LT |
365 | /* Initialize the seq file operations for 'assocs' object. */ |
366 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
367 | { | |
bca735bd | 368 | return seq_open(file, &sctp_assoc_ops); |
1da177e4 LT |
369 | } |
370 | ||
371 | static struct file_operations sctp_assocs_seq_fops = { | |
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. */ | |
379 | int __init sctp_assocs_proc_init(void) | |
380 | { | |
381 | struct proc_dir_entry *p; | |
382 | ||
383 | p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp); | |
384 | if (!p) | |
385 | return -ENOMEM; | |
386 | ||
387 | p->proc_fops = &sctp_assocs_seq_fops; | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
393 | void sctp_assocs_proc_exit(void) | |
394 | { | |
395 | remove_proc_entry("assocs", proc_net_sctp); | |
396 | } |