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37#include <linux/types.h>
38#include <linux/seq_file.h>
39#include <linux/init.h>
40#include <net/sctp/sctp.h>
41
42static 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
79
80
81static unsigned long
82fold_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
99static 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
112static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
113{
114 return single_open(file, sctp_snmp_seq_show, NULL);
115}
116
117static 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
126int __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
140void sctp_snmp_proc_exit(void)
141{
142 remove_proc_entry("snmp", proc_net_sctp);
143}
144
145
146static 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
173static 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
192static 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
206static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
207{
208 return;
209}
210
211
212static 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
222static 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
254static 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
263static int sctp_eps_seq_open(struct inode *inode, struct file *file)
264{
265 return seq_open(file, &sctp_eps_ops);
266}
267
268static 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
276int __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
290void sctp_eps_proc_exit(void)
291{
292 remove_proc_entry("eps", proc_net_sctp);
293}
294
295
296static 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
311static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
312{
313 return;
314}
315
316
317static 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
326static 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
366static 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
374static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
375{
376 return seq_open(file, &sctp_assoc_ops);
377}
378
379static 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
387int __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
401void sctp_assocs_proc_exit(void)
402{
403 remove_proc_entry("assocs", proc_net_sctp);
404}
405
