[deliverable/linux.git] / net / sctp / proc.c

/* SCTP kernel implementation
 * Copyright (c) 2003 International Business Machines, Corp.
 *
 * This file is part of the SCTP kernel implementation
 *
 * This SCTP 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.
 *
 * This SCTP 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 <linux/export.h>
#include <net/sctp/sctp.h>
#include <net/ip.h> /* for snmp_fold_field */

static const 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),
	SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
	SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
	SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
	SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
	SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
	SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
	SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
	SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
	SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
	SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
	SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
	SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
	SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
	SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
	SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
	SNMP_MIB_SENTINEL
};

/* 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,
			   snmp_fold_field((void __percpu **)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 const 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 = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
	if (!p)
		return -ENOMEM;

	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 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_entry(laddr, &epb->bind_addr.address_list, list) {
		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 sctp_transport *transport;
	union sctp_addr *addr, *primary;
	struct sctp_af *af;

	primary = &assoc->peer.primary_addr;
	list_for_each_entry(transport, &assoc->peer.transport_addr_list,
			transports) {
		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");

	return (void *)pos;
}

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


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

	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;
	struct hlist_node *node;
	int    hash = *(loff_t *)v;

	if (hash >= sctp_ep_hashsize)
		return -ENOMEM;

	head = &sctp_ep_hashtable[hash];
	sctp_local_bh_disable();
	read_lock(&head->lock);
	sctp_for_each_hentry(epb, node, &head->chain) {
		ep = sctp_ep(epb);
		sk = epb->sk;
		seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
			   sctp_sk(sk)->type, sk->sk_state, hash,
			   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 const 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 const 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 = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
	if (!p)
		return -ENOMEM;

	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 "
				"HBINT INS OUTS MAXRT T1X T2X RTXC\n");

	return (void *)pos;
}

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


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

	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;
	struct hlist_node *node;
	int    hash = *(loff_t *)v;

	if (hash >= sctp_assoc_hashsize)
		return -ENOMEM;

	head = &sctp_assoc_hashtable[hash];
	sctp_local_bh_disable();
	read_lock(&head->lock);
	sctp_for_each_hentry(epb, node, &head->chain) {
		assoc = sctp_assoc(epb);
		sk = epb->sk;
		seq_printf(seq,
			   "%8pK %8pK %-3d %-3d %-2d %-4d "
			   "%4d %8d %8d %7d %5lu %-5d %5d ",
			   assoc, sk, sctp_sk(sk)->type, sk->sk_state,
			   assoc->state, hash,
			   assoc->assoc_id,
			   assoc->sndbuf_used,
			   atomic_read(&assoc->rmem_alloc),
			   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, "\t%8lu %5d %5d %4d %4d %4d %8d ",
			assoc->hbinterval, assoc->c.sinit_max_instreams,
			assoc->c.sinit_num_ostreams, assoc->max_retrans,
			assoc->init_retries, assoc->shutdown_retries,
			assoc->rtx_data_chunks);
		seq_printf(seq, "\n");
	}
	read_unlock(&head->lock);
	sctp_local_bh_enable();

	return 0;
}

static const 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 const 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 = proc_create("assocs", S_IRUGO, proc_net_sctp,
			&sctp_assocs_seq_fops);
	if (!p)
		return -ENOMEM;

	return 0;
}

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

static void *sctp_remaddr_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, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
				"REM_ADDR_RTX  START\n");

	return (void *)pos;
}

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

	return pos;
}

static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
{
}

static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
{
	struct sctp_hashbucket *head;
	struct sctp_ep_common *epb;
	struct sctp_association *assoc;
	struct hlist_node *node;
	struct sctp_transport *tsp;
	int    hash = *(loff_t *)v;

	if (hash >= sctp_assoc_hashsize)
		return -ENOMEM;

	head = &sctp_assoc_hashtable[hash];
	sctp_local_bh_disable();
	read_lock(&head->lock);
	sctp_for_each_hentry(epb, node, &head->chain) {
		assoc = sctp_assoc(epb);
		list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
					transports) {
			/*
			 * The remote address (ADDR)
			 */
			tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
			seq_printf(seq, " ");

			/*
			 * The association ID (ASSOC_ID)
			 */
			seq_printf(seq, "%d ", tsp->asoc->assoc_id);

			/*
			 * If the Heartbeat is active (HB_ACT)
			 * Note: 1 = Active, 0 = Inactive
			 */
			seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));

			/*
			 * Retransmit time out (RTO)
			 */
			seq_printf(seq, "%lu ", tsp->rto);

			/*
			 * Maximum path retransmit count (PATH_MAX_RTX)
			 */
			seq_printf(seq, "%d ", tsp->pathmaxrxt);

			/*
			 * remote address retransmit count (REM_ADDR_RTX)
			 * Note: We don't have a way to tally this at the moment
			 * so lets just leave it as zero for the moment
			 */
			seq_printf(seq, "0 ");

			/*
			 * remote address start time (START).  This is also not
			 * currently implemented, but we can record it with a
			 * jiffies marker in a subsequent patch
			 */
			seq_printf(seq, "0");

			seq_printf(seq, "\n");
		}
	}

	read_unlock(&head->lock);
	sctp_local_bh_enable();

	return 0;

}

static const struct seq_operations sctp_remaddr_ops = {
	.start = sctp_remaddr_seq_start,
	.next  = sctp_remaddr_seq_next,
	.stop  = sctp_remaddr_seq_stop,
	.show  = sctp_remaddr_seq_show,
};

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

static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &sctp_remaddr_ops);
}

static const struct file_operations sctp_remaddr_seq_fops = {
	.open = sctp_remaddr_seq_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
};

int __init sctp_remaddr_proc_init(void)
{
	struct proc_dir_entry *p;

	p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
	if (!p)
		return -ENOMEM;
	return 0;
}
Commit	Line	Data
60c778b2	1	/* SCTP kernel implementation
1da177e4 LT	2	* Copyright (c) 2003 International Business Machines, Corp.
1da177e4 LT	3	*
60c778b2	4	* This file is part of the SCTP kernel implementation
1da177e4	5	*
60c778b2	6	* This SCTP implementation is free software;
1da177e4 LT	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	*
60c778b2	12	* This SCTP implementation is distributed in the hope that it
1da177e4 LT	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>
bc3b2d7f	40	#include <linux/export.h>
1da177e4	41	#include <net/sctp/sctp.h>
3f5340a6	42	#include <net/ip.h> /* for snmp_fold_field */
1da177e4	43
5833929c	44	static const struct snmp_mib sctp_snmp_list[] = {
1da177e4 LT	45	SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
	46	SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
	47	SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
	48	SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
	49	SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
	50	SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
	51	SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
	52	SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
	53	SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
	54	SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
	55	SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
	56	SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
	57	SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
	58	SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
	59	SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
	60	SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
	61	SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
ac0b0462 SS	62	SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
	63	SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
	64	SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
	65	SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
	66	SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
	67	SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
	68	SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
	69	SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
	70	SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
	71	SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
	72	SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
	73	SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
	74	SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
	75	SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
	76	SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
d2287f84	77	SNMP_MIB_SENTINEL
1da177e4 LT	78	};
1da177e4 LT	79
1da177e4 LT	80	/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
	81	static int sctp_snmp_seq_show(struct seq_file seq, void v)
	82	{
	83	int i;
	84
	85	for (i = 0; sctp_snmp_list[i].name != NULL; i++)
	86	seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
7d720c3e	87	snmp_fold_field((void __percpu **)sctp_statistics,
1da177e4 LT	88	sctp_snmp_list[i].entry));
	89
	90	return 0;
	91	}
	92
	93	/* Initialize the seq file operations for 'snmp' object. */
	94	static int sctp_snmp_seq_open(struct inode inode, struct file file)
	95	{
	96	return single_open(file, sctp_snmp_seq_show, NULL);
	97	}
	98
da7071d7	99	static const struct file_operations sctp_snmp_seq_fops = {
1da177e4 LT	100	.owner = THIS_MODULE,
	101	.open = sctp_snmp_seq_open,
	102	.read = seq_read,
	103	.llseek = seq_lseek,
	104	.release = single_release,
	105	};
	106
	107	/* Set up the proc fs entry for 'snmp' object. */
	108	int __init sctp_snmp_proc_init(void)
	109	{
	110	struct proc_dir_entry *p;
	111
160f17e3	112	p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
1da177e4 LT	113	if (!p)
	114	return -ENOMEM;
	115
1da177e4 LT	116	return 0;
	117	}
	118
	119	/* Cleanup the proc fs entry for 'snmp' object. */
	120	void sctp_snmp_proc_exit(void)
	121	{
	122	remove_proc_entry("snmp", proc_net_sctp);
	123	}
	124
	125	/* Dump local addresses of an association/endpoint. */
	126	static void sctp_seq_dump_local_addrs(struct seq_file seq, struct sctp_ep_common epb)
	127	{
bca735bd	128	struct sctp_association *asoc;
1da177e4	129	struct sctp_sockaddr_entry *laddr;
bca735bd VY	130	struct sctp_transport *peer;
bca735bd VY	131	union sctp_addr addr, primary = NULL;
1da177e4 LT	132	struct sctp_af *af;
1da177e4 LT	133
bca735bd VY	134	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
	135	asoc = sctp_assoc(epb);
	136	peer = asoc->peer.primary_path;
5f242a13	137	primary = &peer->saddr;
bca735bd VY	138	}
bca735bd VY	139
9dbc15f0	140	list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
5f242a13	141	addr = &laddr->a;
1da177e4	142	af = sctp_get_af_specific(addr->sa.sa_family);
bca735bd VY	143	if (primary && af->cmp_addr(addr, primary)) {
	144	seq_printf(seq, "*");
	145	}
5f242a13	146	af->seq_dump_addr(seq, addr);
1da177e4 LT	147	}
	148	}
	149
	150	/* Dump remote addresses of an association. */
	151	static void sctp_seq_dump_remote_addrs(struct seq_file seq, struct sctp_association assoc)
	152	{
1da177e4	153	struct sctp_transport *transport;
bca735bd	154	union sctp_addr addr, primary;
1da177e4 LT	155	struct sctp_af *af;
1da177e4 LT	156
acd2bc96	157	primary = &assoc->peer.primary_addr;
9dbc15f0 RD	158	list_for_each_entry(transport, &assoc->peer.transport_addr_list,
9dbc15f0 RD	159	transports) {
5f242a13	160	addr = &transport->ipaddr;
1da177e4	161	af = sctp_get_af_specific(addr->sa.sa_family);
acd2bc96	162	if (af->cmp_addr(addr, primary)) {
bca735bd VY	163	seq_printf(seq, "*");
bca735bd VY	164	}
5f242a13	165	af->seq_dump_addr(seq, addr);
1da177e4 LT	166	}
	167	}
	168
bca735bd VY	169	static void * sctp_eps_seq_start(struct seq_file seq, loff_t pos)
bca735bd VY	170	{
49392e5e	171	if (*pos >= sctp_ep_hashsize)
bca735bd VY	172	return NULL;
	173
	174	if (*pos < 0)
	175	*pos = 0;
	176
	177	if (*pos == 0)
	178	seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
	179
bca735bd VY	180	return (void *)pos;
	181	}
	182
	183	static void sctp_eps_seq_stop(struct seq_file seq, void v)
	184	{
bca735bd VY	185	}
	186
	187
	188	static void * sctp_eps_seq_next(struct seq_file seq, void v, loff_t *pos)
	189	{
49392e5e	190	if (++*pos >= sctp_ep_hashsize)
bca735bd VY	191	return NULL;
bca735bd VY	192
bca735bd VY	193	return pos;
	194	}
	195
	196
1da177e4 LT	197	/* Display sctp endpoints (/proc/net/sctp/eps). */
	198	static int sctp_eps_seq_show(struct seq_file seq, void v)
	199	{
	200	struct sctp_hashbucket *head;
	201	struct sctp_ep_common *epb;
	202	struct sctp_endpoint *ep;
	203	struct sock *sk;
d970dbf8	204	struct hlist_node *node;
38b0e42a	205	int hash = (loff_t )v;
bca735bd	206
49392e5e	207	if (hash >= sctp_ep_hashsize)
bca735bd VY	208	return -ENOMEM;
bca735bd VY	209
49392e5e	210	head = &sctp_ep_hashtable[hash];
bca735bd VY	211	sctp_local_bh_disable();
bca735bd VY	212	read_lock(&head->lock);
d970dbf8	213	sctp_for_each_hentry(epb, node, &head->chain) {
bca735bd VY	214	ep = sctp_ep(epb);
bca735bd VY	215	sk = epb->sk;
71338aa7	216	seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
49392e5e	217	sctp_sk(sk)->type, sk->sk_state, hash,
bca735bd VY	218	epb->bind_addr.port,
	219	sock_i_uid(sk), sock_i_ino(sk));
	220
	221	sctp_seq_dump_local_addrs(seq, epb);
	222	seq_printf(seq, "\n");
1da177e4	223	}
bca735bd VY	224	read_unlock(&head->lock);
bca735bd VY	225	sctp_local_bh_enable();
1da177e4 LT	226
	227	return 0;
	228	}
	229
56b3d975	230	static const struct seq_operations sctp_eps_ops = {
bca735bd VY	231	.start = sctp_eps_seq_start,
	232	.next = sctp_eps_seq_next,
	233	.stop = sctp_eps_seq_stop,
	234	.show = sctp_eps_seq_show,
	235	};
	236
	237
1da177e4 LT	238	/* Initialize the seq file operations for 'eps' object. */
	239	static int sctp_eps_seq_open(struct inode inode, struct file file)
	240	{
bca735bd	241	return seq_open(file, &sctp_eps_ops);
1da177e4 LT	242	}
1da177e4 LT	243
da7071d7	244	static const struct file_operations sctp_eps_seq_fops = {
1da177e4 LT	245	.open = sctp_eps_seq_open,
	246	.read = seq_read,
	247	.llseek = seq_lseek,
bca735bd	248	.release = seq_release,
1da177e4 LT	249	};
	250
	251	/* Set up the proc fs entry for 'eps' object. */
	252	int __init sctp_eps_proc_init(void)
	253	{
	254	struct proc_dir_entry *p;
	255
459eea74	256	p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
1da177e4 LT	257	if (!p)
	258	return -ENOMEM;
	259
1da177e4 LT	260	return 0;
	261	}
	262
	263	/* Cleanup the proc fs entry for 'eps' object. */
	264	void sctp_eps_proc_exit(void)
	265	{
	266	remove_proc_entry("eps", proc_net_sctp);
	267	}
	268
bca735bd VY	269
	270	static void * sctp_assocs_seq_start(struct seq_file seq, loff_t pos)
	271	{
49392e5e	272	if (*pos >= sctp_assoc_hashsize)
bca735bd VY	273	return NULL;
	274
	275	if (*pos < 0)
	276	*pos = 0;
	277
	278	if (*pos == 0)
58fbbed4 NH	279	seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
	280	"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
	281	"RPORT LADDRS <-> RADDRS "
	282	"HBINT INS OUTS MAXRT T1X T2X RTXC\n");
bca735bd	283
bca735bd VY	284	return (void *)pos;
	285	}
	286
	287	static void sctp_assocs_seq_stop(struct seq_file seq, void v)
	288	{
bca735bd VY	289	}
	290
	291
	292	static void * sctp_assocs_seq_next(struct seq_file seq, void v, loff_t *pos)
	293	{
49392e5e	294	if (++*pos >= sctp_assoc_hashsize)
bca735bd VY	295	return NULL;
bca735bd VY	296
bca735bd VY	297	return pos;
	298	}
	299
1da177e4 LT	300	/* Display sctp associations (/proc/net/sctp/assocs). */
	301	static int sctp_assocs_seq_show(struct seq_file seq, void v)
	302	{
	303	struct sctp_hashbucket *head;
	304	struct sctp_ep_common *epb;
	305	struct sctp_association *assoc;
	306	struct sock *sk;
d970dbf8	307	struct hlist_node *node;
38b0e42a	308	int hash = (loff_t )v;
bca735bd	309
49392e5e	310	if (hash >= sctp_assoc_hashsize)
bca735bd VY	311	return -ENOMEM;
bca735bd VY	312
49392e5e	313	head = &sctp_assoc_hashtable[hash];
bca735bd VY	314	sctp_local_bh_disable();
bca735bd VY	315	read_lock(&head->lock);
d970dbf8	316	sctp_for_each_hentry(epb, node, &head->chain) {
bca735bd VY	317	assoc = sctp_assoc(epb);
	318	sk = epb->sk;
	319	seq_printf(seq,
71338aa7	320	"%8pK %8pK %-3d %-3d %-2d %-4d "
30e93560	321	"%4d %8d %8d %7d %5lu %-5d %5d ",
bca735bd	322	assoc, sk, sctp_sk(sk)->type, sk->sk_state,
58fbbed4 NH	323	assoc->state, hash,
58fbbed4 NH	324	assoc->assoc_id,
bca735bd	325	assoc->sndbuf_used,
6aa2551c	326	atomic_read(&assoc->rmem_alloc),
bca735bd VY	327	sock_i_uid(sk), sock_i_ino(sk),
bca735bd VY	328	epb->bind_addr.port,
30e93560	329	assoc->peer.port);
bca735bd VY	330	seq_printf(seq, " ");
	331	sctp_seq_dump_local_addrs(seq, epb);
	332	seq_printf(seq, "<-> ");
	333	sctp_seq_dump_remote_addrs(seq, assoc);
30e93560 NH	334	seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
	335	assoc->hbinterval, assoc->c.sinit_max_instreams,
	336	assoc->c.sinit_num_ostreams, assoc->max_retrans,
	337	assoc->init_retries, assoc->shutdown_retries,
	338	assoc->rtx_data_chunks);
bca735bd	339	seq_printf(seq, "\n");
1da177e4	340	}
bca735bd VY	341	read_unlock(&head->lock);
bca735bd VY	342	sctp_local_bh_enable();
1da177e4 LT	343
	344	return 0;
	345	}
	346
56b3d975	347	static const struct seq_operations sctp_assoc_ops = {
bca735bd VY	348	.start = sctp_assocs_seq_start,
	349	.next = sctp_assocs_seq_next,
	350	.stop = sctp_assocs_seq_stop,
	351	.show = sctp_assocs_seq_show,
	352	};
	353
1da177e4 LT	354	/* Initialize the seq file operations for 'assocs' object. */
	355	static int sctp_assocs_seq_open(struct inode inode, struct file file)
	356	{
bca735bd	357	return seq_open(file, &sctp_assoc_ops);
1da177e4 LT	358	}
1da177e4 LT	359
da7071d7	360	static const struct file_operations sctp_assocs_seq_fops = {
1da177e4 LT	361	.open = sctp_assocs_seq_open,
	362	.read = seq_read,
	363	.llseek = seq_lseek,
bca735bd	364	.release = seq_release,
1da177e4 LT	365	};
	366
	367	/* Set up the proc fs entry for 'assocs' object. */
	368	int __init sctp_assocs_proc_init(void)
	369	{
	370	struct proc_dir_entry *p;
	371
459eea74 PE	372	p = proc_create("assocs", S_IRUGO, proc_net_sctp,
459eea74 PE	373	&sctp_assocs_seq_fops);
1da177e4 LT	374	if (!p)
	375	return -ENOMEM;
	376
1da177e4 LT	377	return 0;
	378	}
	379
	380	/* Cleanup the proc fs entry for 'assocs' object. */
	381	void sctp_assocs_proc_exit(void)
	382	{
	383	remove_proc_entry("assocs", proc_net_sctp);
	384	}
20c2c1fd NH	385
	386	static void sctp_remaddr_seq_start(struct seq_file seq, loff_t *pos)
	387	{
	388	if (*pos >= sctp_assoc_hashsize)
	389	return NULL;
	390
	391	if (*pos < 0)
	392	*pos = 0;
	393
	394	if (*pos == 0)
	395	seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
	396	"REM_ADDR_RTX START\n");
	397
	398	return (void *)pos;
	399	}
	400
	401	static void sctp_remaddr_seq_next(struct seq_file seq, void v, loff_t pos)
	402	{
	403	if (++*pos >= sctp_assoc_hashsize)
	404	return NULL;
	405
	406	return pos;
	407	}
	408
	409	static void sctp_remaddr_seq_stop(struct seq_file seq, void v)
	410	{
20c2c1fd NH	411	}
	412
	413	static int sctp_remaddr_seq_show(struct seq_file seq, void v)
	414	{
	415	struct sctp_hashbucket *head;
	416	struct sctp_ep_common *epb;
	417	struct sctp_association *assoc;
	418	struct hlist_node *node;
	419	struct sctp_transport *tsp;
	420	int hash = (loff_t )v;
	421
	422	if (hash >= sctp_assoc_hashsize)
	423	return -ENOMEM;
	424
	425	head = &sctp_assoc_hashtable[hash];
	426	sctp_local_bh_disable();
	427	read_lock(&head->lock);
	428	sctp_for_each_hentry(epb, node, &head->chain) {
	429	assoc = sctp_assoc(epb);
	430	list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
	431	transports) {
	432	/*
	433	* The remote address (ADDR)
	434	*/
	435	tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
	436	seq_printf(seq, " ");
	437
	438	/*
	439	* The association ID (ASSOC_ID)
	440	*/
	441	seq_printf(seq, "%d ", tsp->asoc->assoc_id);
	442
	443	/*
	444	* If the Heartbeat is active (HB_ACT)
	445	* Note: 1 = Active, 0 = Inactive
	446	*/
	447	seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
	448
	449	/*
	450	* Retransmit time out (RTO)
	451	*/
	452	seq_printf(seq, "%lu ", tsp->rto);
	453
	454	/*
	455	* Maximum path retransmit count (PATH_MAX_RTX)
	456	*/
	457	seq_printf(seq, "%d ", tsp->pathmaxrxt);
	458
	459	/*
	460	* remote address retransmit count (REM_ADDR_RTX)
	461	* Note: We don't have a way to tally this at the moment
	462	* so lets just leave it as zero for the moment
	463	*/
	464	seq_printf(seq, "0 ");
	465
	466	/*
	467	* remote address start time (START). This is also not
	468	* currently implemented, but we can record it with a
	469	* jiffies marker in a subsequent patch
	470	*/
	471	seq_printf(seq, "0");
	472
	473	seq_printf(seq, "\n");
	474	}
475	}
476
477	read_unlock(&head->lock);
478	sctp_local_bh_enable();
479
480	return 0;
481
482	}
483
484	static const struct seq_operations sctp_remaddr_ops = {
485	.start = sctp_remaddr_seq_start,
486	.next = sctp_remaddr_seq_next,
487	.stop = sctp_remaddr_seq_stop,
488	.show = sctp_remaddr_seq_show,
489	};
490
491	/* Cleanup the proc fs entry for 'remaddr' object. */
492	void sctp_remaddr_proc_exit(void)
493	{
494	remove_proc_entry("remaddr", proc_net_sctp);
495	}
496
497	static int sctp_remaddr_seq_open(struct inode inode, struct file file)
498	{
499	return seq_open(file, &sctp_remaddr_ops);
500	}
501
502	static const struct file_operations sctp_remaddr_seq_fops = {
503	.open = sctp_remaddr_seq_open,
504	.read = seq_read,
505	.llseek = seq_lseek,
506	.release = seq_release,
507	};
508
509	int __init sctp_remaddr_proc_init(void)
510	{
511	struct proc_dir_entry *p;
512
d71a09ed	513	p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
20c2c1fd NH	514	if (!p)
20c2c1fd NH	515	return -ENOMEM;
20c2c1fd NH	516	return 0;
20c2c1fd NH	517	}