1 /* SCTP kernel implementation
2 * Copyright (c) 2003 International Business Machines, Corp.
4 * This file is part of the SCTP kernel implementation
6 * This SCTP 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)
12 * This SCTP 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.
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.
23 * Please send any bug reports or fixes you make to the
25 * lksctp developers <lksctp-developers@lists.sourceforge.net>
27 * Or submit a bug report through the following website:
28 * http://www.sf.net/projects/lksctp
30 * Written or modified by:
31 * Sridhar Samudrala <sri@us.ibm.com>
33 * Any bugs reported given to us we will try to fix... any fixes shared will
34 * be incorporated into the next SCTP release.
37 #include <linux/types.h>
38 #include <linux/seq_file.h>
39 #include <linux/init.h>
40 #include <net/sctp/sctp.h>
41 #include <net/ip.h> /* for snmp_fold_field */
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),
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),
79 /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
80 static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
84 for (i = 0; sctp_snmp_list[i].name != NULL; i++)
85 seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
86 snmp_fold_field((void **)sctp_statistics,
87 sctp_snmp_list[i].entry));
92 /* Initialize the seq file operations for 'snmp' object. */
93 static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
95 return single_open(file, sctp_snmp_seq_show, NULL);
98 static const struct file_operations sctp_snmp_seq_fops = {
100 .open = sctp_snmp_seq_open,
103 .release = single_release,
106 /* Set up the proc fs entry for 'snmp' object. */
107 int __init sctp_snmp_proc_init(void)
109 struct proc_dir_entry *p;
111 p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp);
115 p->proc_fops = &sctp_snmp_seq_fops;
120 /* Cleanup the proc fs entry for 'snmp' object. */
121 void sctp_snmp_proc_exit(void)
123 remove_proc_entry("snmp", proc_net_sctp);
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)
129 struct list_head *pos;
130 struct sctp_association *asoc;
131 struct sctp_sockaddr_entry *laddr;
132 struct sctp_transport *peer;
133 union sctp_addr *addr, *primary = NULL;
136 if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
137 asoc = sctp_assoc(epb);
138 peer = asoc->peer.primary_path;
139 primary = &peer->saddr;
142 list_for_each(pos, &epb->bind_addr.address_list) {
143 laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
145 af = sctp_get_af_specific(addr->sa.sa_family);
146 if (primary && af->cmp_addr(addr, primary)) {
147 seq_printf(seq, "*");
149 af->seq_dump_addr(seq, addr);
153 /* Dump remote addresses of an association. */
154 static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
156 struct list_head *pos;
157 struct sctp_transport *transport;
158 union sctp_addr *addr, *primary;
161 primary = &assoc->peer.primary_addr;
162 list_for_each(pos, &assoc->peer.transport_addr_list) {
163 transport = list_entry(pos, struct sctp_transport, transports);
164 addr = &transport->ipaddr;
165 af = sctp_get_af_specific(addr->sa.sa_family);
166 if (af->cmp_addr(addr, primary)) {
167 seq_printf(seq, "*");
169 af->seq_dump_addr(seq, addr);
173 static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
175 if (*pos >= sctp_ep_hashsize)
182 seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
187 static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
193 static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
195 if (++*pos >= sctp_ep_hashsize)
202 /* Display sctp endpoints (/proc/net/sctp/eps). */
203 static int sctp_eps_seq_show(struct seq_file *seq, void *v)
205 struct sctp_hashbucket *head;
206 struct sctp_ep_common *epb;
207 struct sctp_endpoint *ep;
209 struct hlist_node *node;
210 int hash = *(loff_t *)v;
212 if (hash >= sctp_ep_hashsize)
215 head = &sctp_ep_hashtable[hash];
216 sctp_local_bh_disable();
217 read_lock(&head->lock);
218 sctp_for_each_hentry(epb, node, &head->chain) {
221 seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
222 sctp_sk(sk)->type, sk->sk_state, hash,
224 sock_i_uid(sk), sock_i_ino(sk));
226 sctp_seq_dump_local_addrs(seq, epb);
227 seq_printf(seq, "\n");
229 read_unlock(&head->lock);
230 sctp_local_bh_enable();
235 static const struct seq_operations sctp_eps_ops = {
236 .start = sctp_eps_seq_start,
237 .next = sctp_eps_seq_next,
238 .stop = sctp_eps_seq_stop,
239 .show = sctp_eps_seq_show,
243 /* Initialize the seq file operations for 'eps' object. */
244 static int sctp_eps_seq_open(struct inode *inode, struct file *file)
246 return seq_open(file, &sctp_eps_ops);
249 static const struct file_operations sctp_eps_seq_fops = {
250 .open = sctp_eps_seq_open,
253 .release = seq_release,
256 /* Set up the proc fs entry for 'eps' object. */
257 int __init sctp_eps_proc_init(void)
259 struct proc_dir_entry *p;
261 p = create_proc_entry("eps", S_IRUGO, proc_net_sctp);
265 p->proc_fops = &sctp_eps_seq_fops;
270 /* Cleanup the proc fs entry for 'eps' object. */
271 void sctp_eps_proc_exit(void)
273 remove_proc_entry("eps", proc_net_sctp);
277 static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
279 if (*pos >= sctp_assoc_hashsize)
286 seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
287 "RPORT LADDRS <-> RADDRS\n");
292 static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
298 static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
300 if (++*pos >= sctp_assoc_hashsize)
306 /* Display sctp associations (/proc/net/sctp/assocs). */
307 static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
309 struct sctp_hashbucket *head;
310 struct sctp_ep_common *epb;
311 struct sctp_association *assoc;
313 struct hlist_node *node;
314 int hash = *(loff_t *)v;
316 if (hash >= sctp_assoc_hashsize)
319 head = &sctp_assoc_hashtable[hash];
320 sctp_local_bh_disable();
321 read_lock(&head->lock);
322 sctp_for_each_hentry(epb, node, &head->chain) {
323 assoc = sctp_assoc(epb);
326 "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
327 assoc, sk, sctp_sk(sk)->type, sk->sk_state,
328 assoc->state, hash, assoc->assoc_id,
330 atomic_read(&assoc->rmem_alloc),
331 sock_i_uid(sk), sock_i_ino(sk),
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");
341 read_unlock(&head->lock);
342 sctp_local_bh_enable();
347 static const struct seq_operations sctp_assoc_ops = {
348 .start = sctp_assocs_seq_start,
349 .next = sctp_assocs_seq_next,
350 .stop = sctp_assocs_seq_stop,
351 .show = sctp_assocs_seq_show,
354 /* Initialize the seq file operations for 'assocs' object. */
355 static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
357 return seq_open(file, &sctp_assoc_ops);
360 static const struct file_operations sctp_assocs_seq_fops = {
361 .open = sctp_assocs_seq_open,
364 .release = seq_release,
367 /* Set up the proc fs entry for 'assocs' object. */
368 int __init sctp_assocs_proc_init(void)
370 struct proc_dir_entry *p;
372 p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp);
376 p->proc_fops = &sctp_assocs_seq_fops;
381 /* Cleanup the proc fs entry for 'assocs' object. */
382 void sctp_assocs_proc_exit(void)
384 remove_proc_entry("assocs", proc_net_sctp);