net/sctp/proc.c

/* SCTP kernel reference Implementation
 * Copyright (c) 2003 International Business Machines, Corp.
 *
 * This file is part of the SCTP kernel reference Implementation
 *
 * The SCTP reference implementation is free software;
 * you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * The SCTP reference implementation is distributed in the hope that it
 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
 *                 ************************
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU CC; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Please send any bug reports or fixes you make to the
 * email address(es):
 *    lksctp developers <lksctp-developers@lists.sourceforge.net>
 *
 * Or submit a bug report through the following website:
 *    http://www.sf.net/projects/lksctp
 *
 * Written or modified by:
 *    Sridhar Samudrala <sri@us.ibm.com>
 *
 * Any bugs reported given to us we will try to fix... any fixes shared will
 * be incorporated into the next SCTP release.
 */

#include <linux/types.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <net/sctp/sctp.h>

static struct snmp_mib sctp_snmp_list[] = {
	SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
	SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
	SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
	SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
	SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
	SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
	SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
	SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
	SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
	SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
	SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
	SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
	SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
	SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
	SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
	SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
	SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
};

/* Return the current value of a particular entry in the mib by adding its
 * per cpu counters.
 */ 
static unsigned long
fold_field(void *mib[], int nr)
{
	unsigned long res = 0;
	int i;

	for (i = 0; i < NR_CPUS; i++) {
		if (!cpu_possible(i))
			continue;
		res +=
		    *((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) +
					 sizeof (unsigned long) * nr));
		res +=
		    *((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) +
					 sizeof (unsigned long) * nr));
	}
	return res;
}

/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
{
	int i;

	for (i = 0; sctp_snmp_list[i].name != NULL; i++)
		seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
			   fold_field((void **)sctp_statistics, 
				      sctp_snmp_list[i].entry));

	return 0;
}

/* Initialize the seq file operations for 'snmp' object. */
static int sctp_snmp_seq_open(struct inode *inode, struct file *file)
{
	return single_open(file, sctp_snmp_seq_show, NULL);
}

static struct file_operations sctp_snmp_seq_fops = {
	.owner	 = THIS_MODULE,
	.open	 = sctp_snmp_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = single_release,
};

/* Set up the proc fs entry for 'snmp' object. */
int __init sctp_snmp_proc_init(void)
{
	struct proc_dir_entry *p;

	p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp);
	if (!p)
		return -ENOMEM;

	p->proc_fops = &sctp_snmp_seq_fops;

	return 0;
}

/* Cleanup the proc fs entry for 'snmp' object. */
void sctp_snmp_proc_exit(void)
{
	remove_proc_entry("snmp", proc_net_sctp);
}

/* Dump local addresses of an association/endpoint. */
static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
{
	struct list_head *pos;
	struct sctp_association *asoc;
	struct sctp_sockaddr_entry *laddr;
	struct sctp_transport *peer;
	union sctp_addr *addr, *primary = NULL;
	struct sctp_af *af;

	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
	    asoc = sctp_assoc(epb);
	    peer = asoc->peer.primary_path;
	    primary = &peer->saddr;
	}

	list_for_each(pos, &epb->bind_addr.address_list) {
		laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
		addr = (union sctp_addr *)&laddr->a;
		af = sctp_get_af_specific(addr->sa.sa_family);
		if (primary && af->cmp_addr(addr, primary)) {
			seq_printf(seq, "*");
		}
		af->seq_dump_addr(seq, addr);
	}
}

/* Dump remote addresses of an association. */
static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc)
{
	struct list_head *pos;
	struct sctp_transport *transport;
	union sctp_addr *addr, *primary;
	struct sctp_af *af;

	primary = &(assoc->peer.primary_addr);
	list_for_each(pos, &assoc->peer.transport_addr_list) {
		transport = list_entry(pos, struct sctp_transport, transports);
		addr = (union sctp_addr *)&transport->ipaddr;
		af = sctp_get_af_specific(addr->sa.sa_family);
		if (af->cmp_addr(addr, primary)) {
			seq_printf(seq, "*");
		}
		af->seq_dump_addr(seq, addr);
	}
}

static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
{
	if (*pos > sctp_ep_hashsize)
		return NULL;

	if (*pos < 0)
		*pos = 0;

	if (*pos == 0)
		seq_printf(seq, " ENDPT     SOCK   STY SST HBKT LPORT   UID INODE LADDRS\n");

	++*pos;

	return (void *)pos;
}

static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
{
	return;
}


static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	if (*pos > sctp_ep_hashsize)
		return NULL;

	++*pos;

	return pos;
}


/* Display sctp endpoints (/proc/net/sctp/eps). */
static int sctp_eps_seq_show(struct seq_file *seq, void *v)
{
	struct sctp_hashbucket *head;
	struct sctp_ep_common *epb;
	struct sctp_endpoint *ep;
	struct sock *sk;
	int    hash = *(int *)v;

	if (hash > sctp_ep_hashsize)
		return -ENOMEM;

	head = &sctp_ep_hashtable[hash-1];
	sctp_local_bh_disable();
	read_lock(&head->lock);
	for (epb = head->chain; epb; epb = epb->next) {
		ep = sctp_ep(epb);
		sk = epb->sk;
		seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
			   sctp_sk(sk)->type, sk->sk_state, hash-1,
			   epb->bind_addr.port,
			   sock_i_uid(sk), sock_i_ino(sk));

		sctp_seq_dump_local_addrs(seq, epb);
		seq_printf(seq, "\n");
	}
	read_unlock(&head->lock);
	sctp_local_bh_enable();

	return 0;
}

static struct seq_operations sctp_eps_ops = {
	.start = sctp_eps_seq_start,
	.next  = sctp_eps_seq_next,
	.stop  = sctp_eps_seq_stop,
	.show  = sctp_eps_seq_show,
};


/* Initialize the seq file operations for 'eps' object. */
static int sctp_eps_seq_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &sctp_eps_ops);
}

static struct file_operations sctp_eps_seq_fops = {
	.open	 = sctp_eps_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = seq_release,
};

/* Set up the proc fs entry for 'eps' object. */
int __init sctp_eps_proc_init(void)
{
	struct proc_dir_entry *p;

	p = create_proc_entry("eps", S_IRUGO, proc_net_sctp);
	if (!p)
		return -ENOMEM;

	p->proc_fops = &sctp_eps_seq_fops;

	return 0;
}

/* Cleanup the proc fs entry for 'eps' object. */
void sctp_eps_proc_exit(void)
{
	remove_proc_entry("eps", proc_net_sctp);
}


static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
{
	if (*pos > sctp_assoc_hashsize)
		return NULL;

	if (*pos < 0)
		*pos = 0;

	if (*pos == 0)
		seq_printf(seq, " ASSOC     SOCK   STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
				"RPORT LADDRS <-> RADDRS\n");

	++*pos;

	return (void *)pos;
}

static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
{
	return;
}


static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	if (*pos > sctp_assoc_hashsize)
		return NULL;

	++*pos;

	return pos;
}

/* Display sctp associations (/proc/net/sctp/assocs). */
static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
{
	struct sctp_hashbucket *head;
	struct sctp_ep_common *epb;
	struct sctp_association *assoc;
	struct sock *sk;
	int    hash = *(int *)v;

	if (hash > sctp_assoc_hashsize)
		return -ENOMEM;

	head = &sctp_assoc_hashtable[hash-1];
	sctp_local_bh_disable();
	read_lock(&head->lock);
	for (epb = head->chain; epb; epb = epb->next) {
		assoc = sctp_assoc(epb);
		sk = epb->sk;
		seq_printf(seq,
			   "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
			   assoc, sk, sctp_sk(sk)->type, sk->sk_state,
			   assoc->state, hash-1, assoc->assoc_id,
			   (sk->sk_rcvbuf - assoc->rwnd),
			   assoc->sndbuf_used,
			   sock_i_uid(sk), sock_i_ino(sk),
			   epb->bind_addr.port,
			   assoc->peer.port);

		seq_printf(seq, " ");
		sctp_seq_dump_local_addrs(seq, epb);
		seq_printf(seq, "<-> ");
		sctp_seq_dump_remote_addrs(seq, assoc);
		seq_printf(seq, "\n");
	}
	read_unlock(&head->lock);
	sctp_local_bh_enable();

	return 0;
}

static struct seq_operations sctp_assoc_ops = {
	.start = sctp_assocs_seq_start,
	.next  = sctp_assocs_seq_next,
	.stop  = sctp_assocs_seq_stop,
	.show  = sctp_assocs_seq_show,
};

/* Initialize the seq file operations for 'assocs' object. */
static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &sctp_assoc_ops);
}

static struct file_operations sctp_assocs_seq_fops = {
	.open	 = sctp_assocs_seq_open,
	.read	 = seq_read,
	.llseek	 = seq_lseek,
	.release = seq_release,
};

/* Set up the proc fs entry for 'assocs' object. */
int __init sctp_assocs_proc_init(void)
{
	struct proc_dir_entry *p;

	p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp);
	if (!p)
		return -ENOMEM;

	p->proc_fops = &sctp_assocs_seq_fops;

	return 0;
}

/* Cleanup the proc fs entry for 'assocs' object. */
void sctp_assocs_proc_exit(void)
{
	remove_proc_entry("assocs", proc_net_sctp);
}
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;
135	struct sctp_association *asoc;
136	struct sctp_sockaddr_entry *laddr;
137	struct sctp_transport *peer;
138	union sctp_addr addr, primary = NULL;
139	struct sctp_af *af;
140
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
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);
151	if (primary && af->cmp_addr(addr, primary)) {
152	seq_printf(seq, "*");
153	}
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;
163	union sctp_addr addr, primary;
164	struct sctp_af *af;
165
166	primary = &(assoc->peer.primary_addr);
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);
171	if (af->cmp_addr(addr, primary)) {
172	seq_printf(seq, "*");
173	}
174	af->seq_dump_addr(seq, addr);
175	}
176	}
177
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
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;
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");
236	}
237	read_unlock(&head->lock);
238	sctp_local_bh_enable();
239
240	return 0;
241	}
242
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
251	/* Initialize the seq file operations for 'eps' object. */
252	static int sctp_eps_seq_open(struct inode inode, struct file file)
253	{
254	return seq_open(file, &sctp_eps_ops);
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,
261	.release = seq_release,
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
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
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;
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");
351	}
352	read_unlock(&head->lock);
353	sctp_local_bh_enable();
354
355	return 0;
356	}
357
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
365	/* Initialize the seq file operations for 'assocs' object. */
366	static int sctp_assocs_seq_open(struct inode inode, struct file file)
367	{
368	return seq_open(file, &sctp_assoc_ops);
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,
375	.release = seq_release,
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	}