1 |
3 |
xianfeng |
/* 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 |
|
|
SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
|
61 |
|
|
SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
|
62 |
|
|
SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
|
63 |
|
|
SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
|
64 |
|
|
SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
|
65 |
|
|
SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
|
66 |
|
|
SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
|
67 |
|
|
SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
|
68 |
|
|
SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
|
69 |
|
|
SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
|
70 |
|
|
SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
|
71 |
|
|
SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
|
72 |
|
|
SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
|
73 |
|
|
SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
|
74 |
|
|
SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
|
75 |
|
|
SNMP_MIB_SENTINEL
|
76 |
|
|
};
|
77 |
|
|
|
78 |
|
|
/* Return the current value of a particular entry in the mib by adding its
|
79 |
|
|
* per cpu counters.
|
80 |
|
|
*/
|
81 |
|
|
static unsigned long
|
82 |
|
|
fold_field(void *mib[], int nr)
|
83 |
|
|
{
|
84 |
|
|
unsigned long res = 0;
|
85 |
|
|
int i;
|
86 |
|
|
|
87 |
|
|
for_each_possible_cpu(i) {
|
88 |
|
|
res +=
|
89 |
|
|
*((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) +
|
90 |
|
|
sizeof (unsigned long) * nr));
|
91 |
|
|
res +=
|
92 |
|
|
*((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) +
|
93 |
|
|
sizeof (unsigned long) * nr));
|
94 |
|
|
}
|
95 |
|
|
return res;
|
96 |
|
|
}
|
97 |
|
|
|
98 |
|
|
/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
|
99 |
|
|
static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
|
100 |
|
|
{
|
101 |
|
|
int i;
|
102 |
|
|
|
103 |
|
|
for (i = 0; sctp_snmp_list[i].name != NULL; i++)
|
104 |
|
|
seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
|
105 |
|
|
fold_field((void **)sctp_statistics,
|
106 |
|
|
sctp_snmp_list[i].entry));
|
107 |
|
|
|
108 |
|
|
return 0;
|
109 |
|
|
}
|
110 |
|
|
|
111 |
|
|
/* Initialize the seq file operations for 'snmp' object. */
|
112 |
|
|
static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
|
113 |
|
|
{
|
114 |
|
|
return single_open(file, sctp_snmp_seq_show, NULL);
|
115 |
|
|
}
|
116 |
|
|
|
117 |
|
|
static const struct file_operations sctp_snmp_seq_fops = {
|
118 |
|
|
.owner = THIS_MODULE,
|
119 |
|
|
.open = sctp_snmp_seq_open,
|
120 |
|
|
.read = seq_read,
|
121 |
|
|
.llseek = seq_lseek,
|
122 |
|
|
.release = single_release,
|
123 |
|
|
};
|
124 |
|
|
|
125 |
|
|
/* Set up the proc fs entry for 'snmp' object. */
|
126 |
|
|
int __init sctp_snmp_proc_init(void)
|
127 |
|
|
{
|
128 |
|
|
struct proc_dir_entry *p;
|
129 |
|
|
|
130 |
|
|
p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp);
|
131 |
|
|
if (!p)
|
132 |
|
|
return -ENOMEM;
|
133 |
|
|
|
134 |
|
|
p->proc_fops = &sctp_snmp_seq_fops;
|
135 |
|
|
|
136 |
|
|
return 0;
|
137 |
|
|
}
|
138 |
|
|
|
139 |
|
|
/* Cleanup the proc fs entry for 'snmp' object. */
|
140 |
|
|
void sctp_snmp_proc_exit(void)
|
141 |
|
|
{
|
142 |
|
|
remove_proc_entry("snmp", proc_net_sctp);
|
143 |
|
|
}
|
144 |
|
|
|
145 |
|
|
/* Dump local addresses of an association/endpoint. */
|
146 |
|
|
static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
|
147 |
|
|
{
|
148 |
|
|
struct list_head *pos;
|
149 |
|
|
struct sctp_association *asoc;
|
150 |
|
|
struct sctp_sockaddr_entry *laddr;
|
151 |
|
|
struct sctp_transport *peer;
|
152 |
|
|
union sctp_addr *addr, *primary = NULL;
|
153 |
|
|
struct sctp_af *af;
|
154 |
|
|
|
155 |
|
|
if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
|
156 |
|
|
asoc = sctp_assoc(epb);
|
157 |
|
|
peer = asoc->peer.primary_path;
|
158 |
|
|
primary = &peer->saddr;
|
159 |
|
|
}
|
160 |
|
|
|
161 |
|
|
list_for_each(pos, &epb->bind_addr.address_list) {
|
162 |
|
|
laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
|
163 |
|
|
addr = &laddr->a;
|
164 |
|
|
af = sctp_get_af_specific(addr->sa.sa_family);
|
165 |
|
|
if (primary && af->cmp_addr(addr, primary)) {
|
166 |
|
|
seq_printf(seq, "*");
|
167 |
|
|
}
|
168 |
|
|
af->seq_dump_addr(seq, addr);
|
169 |
|
|
}
|
170 |
|
|
}
|
171 |
|
|
|
172 |
|
|
/* Dump remote addresses of an association. */
|
173 |
|
|
static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
|
174 |
|
|
{
|
175 |
|
|
struct list_head *pos;
|
176 |
|
|
struct sctp_transport *transport;
|
177 |
|
|
union sctp_addr *addr, *primary;
|
178 |
|
|
struct sctp_af *af;
|
179 |
|
|
|
180 |
|
|
primary = &assoc->peer.primary_addr;
|
181 |
|
|
list_for_each(pos, &assoc->peer.transport_addr_list) {
|
182 |
|
|
transport = list_entry(pos, struct sctp_transport, transports);
|
183 |
|
|
addr = &transport->ipaddr;
|
184 |
|
|
af = sctp_get_af_specific(addr->sa.sa_family);
|
185 |
|
|
if (af->cmp_addr(addr, primary)) {
|
186 |
|
|
seq_printf(seq, "*");
|
187 |
|
|
}
|
188 |
|
|
af->seq_dump_addr(seq, addr);
|
189 |
|
|
}
|
190 |
|
|
}
|
191 |
|
|
|
192 |
|
|
static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
|
193 |
|
|
{
|
194 |
|
|
if (*pos >= sctp_ep_hashsize)
|
195 |
|
|
return NULL;
|
196 |
|
|
|
197 |
|
|
if (*pos < 0)
|
198 |
|
|
*pos = 0;
|
199 |
|
|
|
200 |
|
|
if (*pos == 0)
|
201 |
|
|
seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
|
202 |
|
|
|
203 |
|
|
return (void *)pos;
|
204 |
|
|
}
|
205 |
|
|
|
206 |
|
|
static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
|
207 |
|
|
{
|
208 |
|
|
return;
|
209 |
|
|
}
|
210 |
|
|
|
211 |
|
|
|
212 |
|
|
static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
213 |
|
|
{
|
214 |
|
|
if (++*pos >= sctp_ep_hashsize)
|
215 |
|
|
return NULL;
|
216 |
|
|
|
217 |
|
|
return pos;
|
218 |
|
|
}
|
219 |
|
|
|
220 |
|
|
|
221 |
|
|
/* Display sctp endpoints (/proc/net/sctp/eps). */
|
222 |
|
|
static int sctp_eps_seq_show(struct seq_file *seq, void *v)
|
223 |
|
|
{
|
224 |
|
|
struct sctp_hashbucket *head;
|
225 |
|
|
struct sctp_ep_common *epb;
|
226 |
|
|
struct sctp_endpoint *ep;
|
227 |
|
|
struct sock *sk;
|
228 |
|
|
struct hlist_node *node;
|
229 |
|
|
int hash = *(loff_t *)v;
|
230 |
|
|
|
231 |
|
|
if (hash >= sctp_ep_hashsize)
|
232 |
|
|
return -ENOMEM;
|
233 |
|
|
|
234 |
|
|
head = &sctp_ep_hashtable[hash];
|
235 |
|
|
sctp_local_bh_disable();
|
236 |
|
|
read_lock(&head->lock);
|
237 |
|
|
sctp_for_each_hentry(epb, node, &head->chain) {
|
238 |
|
|
ep = sctp_ep(epb);
|
239 |
|
|
sk = epb->sk;
|
240 |
|
|
seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
|
241 |
|
|
sctp_sk(sk)->type, sk->sk_state, hash,
|
242 |
|
|
epb->bind_addr.port,
|
243 |
|
|
sock_i_uid(sk), sock_i_ino(sk));
|
244 |
|
|
|
245 |
|
|
sctp_seq_dump_local_addrs(seq, epb);
|
246 |
|
|
seq_printf(seq, "\n");
|
247 |
|
|
}
|
248 |
|
|
read_unlock(&head->lock);
|
249 |
|
|
sctp_local_bh_enable();
|
250 |
|
|
|
251 |
|
|
return 0;
|
252 |
|
|
}
|
253 |
|
|
|
254 |
|
|
static const struct seq_operations sctp_eps_ops = {
|
255 |
|
|
.start = sctp_eps_seq_start,
|
256 |
|
|
.next = sctp_eps_seq_next,
|
257 |
|
|
.stop = sctp_eps_seq_stop,
|
258 |
|
|
.show = sctp_eps_seq_show,
|
259 |
|
|
};
|
260 |
|
|
|
261 |
|
|
|
262 |
|
|
/* Initialize the seq file operations for 'eps' object. */
|
263 |
|
|
static int sctp_eps_seq_open(struct inode *inode, struct file *file)
|
264 |
|
|
{
|
265 |
|
|
return seq_open(file, &sctp_eps_ops);
|
266 |
|
|
}
|
267 |
|
|
|
268 |
|
|
static const struct file_operations sctp_eps_seq_fops = {
|
269 |
|
|
.open = sctp_eps_seq_open,
|
270 |
|
|
.read = seq_read,
|
271 |
|
|
.llseek = seq_lseek,
|
272 |
|
|
.release = seq_release,
|
273 |
|
|
};
|
274 |
|
|
|
275 |
|
|
/* Set up the proc fs entry for 'eps' object. */
|
276 |
|
|
int __init sctp_eps_proc_init(void)
|
277 |
|
|
{
|
278 |
|
|
struct proc_dir_entry *p;
|
279 |
|
|
|
280 |
|
|
p = create_proc_entry("eps", S_IRUGO, proc_net_sctp);
|
281 |
|
|
if (!p)
|
282 |
|
|
return -ENOMEM;
|
283 |
|
|
|
284 |
|
|
p->proc_fops = &sctp_eps_seq_fops;
|
285 |
|
|
|
286 |
|
|
return 0;
|
287 |
|
|
}
|
288 |
|
|
|
289 |
|
|
/* Cleanup the proc fs entry for 'eps' object. */
|
290 |
|
|
void sctp_eps_proc_exit(void)
|
291 |
|
|
{
|
292 |
|
|
remove_proc_entry("eps", proc_net_sctp);
|
293 |
|
|
}
|
294 |
|
|
|
295 |
|
|
|
296 |
|
|
static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
|
297 |
|
|
{
|
298 |
|
|
if (*pos >= sctp_assoc_hashsize)
|
299 |
|
|
return NULL;
|
300 |
|
|
|
301 |
|
|
if (*pos < 0)
|
302 |
|
|
*pos = 0;
|
303 |
|
|
|
304 |
|
|
if (*pos == 0)
|
305 |
|
|
seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
|
306 |
|
|
"RPORT LADDRS <-> RADDRS\n");
|
307 |
|
|
|
308 |
|
|
return (void *)pos;
|
309 |
|
|
}
|
310 |
|
|
|
311 |
|
|
static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
|
312 |
|
|
{
|
313 |
|
|
return;
|
314 |
|
|
}
|
315 |
|
|
|
316 |
|
|
|
317 |
|
|
static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
318 |
|
|
{
|
319 |
|
|
if (++*pos >= sctp_assoc_hashsize)
|
320 |
|
|
return NULL;
|
321 |
|
|
|
322 |
|
|
return pos;
|
323 |
|
|
}
|
324 |
|
|
|
325 |
|
|
/* Display sctp associations (/proc/net/sctp/assocs). */
|
326 |
|
|
static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
|
327 |
|
|
{
|
328 |
|
|
struct sctp_hashbucket *head;
|
329 |
|
|
struct sctp_ep_common *epb;
|
330 |
|
|
struct sctp_association *assoc;
|
331 |
|
|
struct sock *sk;
|
332 |
|
|
struct hlist_node *node;
|
333 |
|
|
int hash = *(loff_t *)v;
|
334 |
|
|
|
335 |
|
|
if (hash >= sctp_assoc_hashsize)
|
336 |
|
|
return -ENOMEM;
|
337 |
|
|
|
338 |
|
|
head = &sctp_assoc_hashtable[hash];
|
339 |
|
|
sctp_local_bh_disable();
|
340 |
|
|
read_lock(&head->lock);
|
341 |
|
|
sctp_for_each_hentry(epb, node, &head->chain) {
|
342 |
|
|
assoc = sctp_assoc(epb);
|
343 |
|
|
sk = epb->sk;
|
344 |
|
|
seq_printf(seq,
|
345 |
|
|
"%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
|
346 |
|
|
assoc, sk, sctp_sk(sk)->type, sk->sk_state,
|
347 |
|
|
assoc->state, hash, assoc->assoc_id,
|
348 |
|
|
assoc->sndbuf_used,
|
349 |
|
|
atomic_read(&assoc->rmem_alloc),
|
350 |
|
|
sock_i_uid(sk), sock_i_ino(sk),
|
351 |
|
|
epb->bind_addr.port,
|
352 |
|
|
assoc->peer.port);
|
353 |
|
|
|
354 |
|
|
seq_printf(seq, " ");
|
355 |
|
|
sctp_seq_dump_local_addrs(seq, epb);
|
356 |
|
|
seq_printf(seq, "<-> ");
|
357 |
|
|
sctp_seq_dump_remote_addrs(seq, assoc);
|
358 |
|
|
seq_printf(seq, "\n");
|
359 |
|
|
}
|
360 |
|
|
read_unlock(&head->lock);
|
361 |
|
|
sctp_local_bh_enable();
|
362 |
|
|
|
363 |
|
|
return 0;
|
364 |
|
|
}
|
365 |
|
|
|
366 |
|
|
static const struct seq_operations sctp_assoc_ops = {
|
367 |
|
|
.start = sctp_assocs_seq_start,
|
368 |
|
|
.next = sctp_assocs_seq_next,
|
369 |
|
|
.stop = sctp_assocs_seq_stop,
|
370 |
|
|
.show = sctp_assocs_seq_show,
|
371 |
|
|
};
|
372 |
|
|
|
373 |
|
|
/* Initialize the seq file operations for 'assocs' object. */
|
374 |
|
|
static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
|
375 |
|
|
{
|
376 |
|
|
return seq_open(file, &sctp_assoc_ops);
|
377 |
|
|
}
|
378 |
|
|
|
379 |
|
|
static const struct file_operations sctp_assocs_seq_fops = {
|
380 |
|
|
.open = sctp_assocs_seq_open,
|
381 |
|
|
.read = seq_read,
|
382 |
|
|
.llseek = seq_lseek,
|
383 |
|
|
.release = seq_release,
|
384 |
|
|
};
|
385 |
|
|
|
386 |
|
|
/* Set up the proc fs entry for 'assocs' object. */
|
387 |
|
|
int __init sctp_assocs_proc_init(void)
|
388 |
|
|
{
|
389 |
|
|
struct proc_dir_entry *p;
|
390 |
|
|
|
391 |
|
|
p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp);
|
392 |
|
|
if (!p)
|
393 |
|
|
return -ENOMEM;
|
394 |
|
|
|
395 |
|
|
p->proc_fops = &sctp_assocs_seq_fops;
|
396 |
|
|
|
397 |
|
|
return 0;
|
398 |
|
|
}
|
399 |
|
|
|
400 |
|
|
/* Cleanup the proc fs entry for 'assocs' object. */
|
401 |
|
|
void sctp_assocs_proc_exit(void)
|
402 |
|
|
{
|
403 |
|
|
remove_proc_entry("assocs", proc_net_sctp);
|
404 |
|
|
}
|