[mirror_ubuntu-bionic-kernel.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)
{
	struct net *net = seq->private;
	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 **)net->sctp.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_net(inode, file, sctp_snmp_seq_show);
}

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 __net_init sctp_snmp_proc_init(struct net *net)
{
	struct proc_dir_entry *p;

	p = proc_create("snmp", S_IRUGO, net->sctp.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(struct net *net)
{
	remove_proc_entry("snmp", net->sctp.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 seq_net_private *priv = seq->private;
	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;
		if (!net_eq(sock_net(sk), priv->net))
			continue;
		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_net(inode, file, &sctp_eps_ops,
			    sizeof(struct seq_net_private));
}

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 __net_init sctp_eps_proc_init(struct net *net)
{
	struct proc_dir_entry *p;

	p = proc_create("eps", S_IRUGO, net->sctp.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(struct net *net)
{
	remove_proc_entry("eps", net->sctp.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 seq_net_private *priv = seq->private;
	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;
		if (!net_eq(sock_net(sk), priv->net))
			continue;
		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_net(inode, file, &sctp_assoc_ops,
			    sizeof(struct seq_net_private));
}

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 __net_init sctp_assocs_proc_init(struct net *net)
{
	struct proc_dir_entry *p;

	p = proc_create("assocs", S_IRUGO, net->sctp.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(struct net *net)
{
	remove_proc_entry("assocs", net->sctp.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 seq_net_private *priv = seq->private;
	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) {
		if (!net_eq(sock_net(epb->sk), priv->net))
			continue;
		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(struct net *net)
{
	remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
}

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

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

int __net_init sctp_remaddr_proc_init(struct net *net)
{
	struct proc_dir_entry *p;

	p = proc_create("remaddr", S_IRUGO, net->sctp.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	{
13d782f6	83	struct net *net = seq->private;
1da177e4 LT	84	int i;
	85
	86	for (i = 0; sctp_snmp_list[i].name != NULL; i++)
	87	seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
b01a2407	88	snmp_fold_field((void __percpu **)net->sctp.sctp_statistics,
1da177e4 LT	89	sctp_snmp_list[i].entry));
	90
	91	return 0;
	92	}
	93
	94	/* Initialize the seq file operations for 'snmp' object. */
	95	static int sctp_snmp_seq_open(struct inode inode, struct file file)
	96	{
13d782f6	97	return single_open_net(inode, file, sctp_snmp_seq_show);
1da177e4 LT	98	}
1da177e4 LT	99
da7071d7	100	static const struct file_operations sctp_snmp_seq_fops = {
1da177e4 LT	101	.owner = THIS_MODULE,
	102	.open = sctp_snmp_seq_open,
	103	.read = seq_read,
	104	.llseek = seq_lseek,
	105	.release = single_release,
	106	};
	107
	108	/* Set up the proc fs entry for 'snmp' object. */
13d782f6	109	int __net_init sctp_snmp_proc_init(struct net *net)
1da177e4 LT	110	{
	111	struct proc_dir_entry *p;
	112
13d782f6 EB	113	p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	114	&sctp_snmp_seq_fops);
1da177e4 LT	115	if (!p)
	116	return -ENOMEM;
	117
1da177e4 LT	118	return 0;
	119	}
	120
	121	/* Cleanup the proc fs entry for 'snmp' object. */
13d782f6	122	void sctp_snmp_proc_exit(struct net *net)
1da177e4	123	{
13d782f6	124	remove_proc_entry("snmp", net->sctp.proc_net_sctp);
1da177e4 LT	125	}
	126
	127	/* Dump local addresses of an association/endpoint. */
	128	static void sctp_seq_dump_local_addrs(struct seq_file seq, struct sctp_ep_common epb)
	129	{
bca735bd	130	struct sctp_association *asoc;
1da177e4	131	struct sctp_sockaddr_entry *laddr;
bca735bd VY	132	struct sctp_transport *peer;
bca735bd VY	133	union sctp_addr addr, primary = NULL;
1da177e4 LT	134	struct sctp_af *af;
1da177e4 LT	135
bca735bd VY	136	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
	137	asoc = sctp_assoc(epb);
	138	peer = asoc->peer.primary_path;
5f242a13	139	primary = &peer->saddr;
bca735bd VY	140	}
bca735bd VY	141
9dbc15f0	142	list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
5f242a13	143	addr = &laddr->a;
1da177e4	144	af = sctp_get_af_specific(addr->sa.sa_family);
bca735bd VY	145	if (primary && af->cmp_addr(addr, primary)) {
	146	seq_printf(seq, "*");
	147	}
5f242a13	148	af->seq_dump_addr(seq, addr);
1da177e4 LT	149	}
	150	}
	151
	152	/* Dump remote addresses of an association. */
	153	static void sctp_seq_dump_remote_addrs(struct seq_file seq, struct sctp_association assoc)
	154	{
1da177e4	155	struct sctp_transport *transport;
bca735bd	156	union sctp_addr addr, primary;
1da177e4 LT	157	struct sctp_af *af;
1da177e4 LT	158
acd2bc96	159	primary = &assoc->peer.primary_addr;
9dbc15f0 RD	160	list_for_each_entry(transport, &assoc->peer.transport_addr_list,
9dbc15f0 RD	161	transports) {
5f242a13	162	addr = &transport->ipaddr;
1da177e4	163	af = sctp_get_af_specific(addr->sa.sa_family);
acd2bc96	164	if (af->cmp_addr(addr, primary)) {
bca735bd VY	165	seq_printf(seq, "*");
bca735bd VY	166	}
5f242a13	167	af->seq_dump_addr(seq, addr);
1da177e4 LT	168	}
	169	}
	170
bca735bd VY	171	static void * sctp_eps_seq_start(struct seq_file seq, loff_t pos)
bca735bd VY	172	{
49392e5e	173	if (*pos >= sctp_ep_hashsize)
bca735bd VY	174	return NULL;
	175
	176	if (*pos < 0)
	177	*pos = 0;
	178
	179	if (*pos == 0)
	180	seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
	181
bca735bd VY	182	return (void *)pos;
	183	}
	184
	185	static void sctp_eps_seq_stop(struct seq_file seq, void v)
	186	{
bca735bd VY	187	}
	188
	189
	190	static void * sctp_eps_seq_next(struct seq_file seq, void v, loff_t *pos)
	191	{
49392e5e	192	if (++*pos >= sctp_ep_hashsize)
bca735bd VY	193	return NULL;
bca735bd VY	194
bca735bd VY	195	return pos;
	196	}
	197
	198
1da177e4 LT	199	/* Display sctp endpoints (/proc/net/sctp/eps). */
	200	static int sctp_eps_seq_show(struct seq_file seq, void v)
	201	{
13d782f6	202	struct seq_net_private *priv = seq->private;
1da177e4 LT	203	struct sctp_hashbucket *head;
	204	struct sctp_ep_common *epb;
	205	struct sctp_endpoint *ep;
	206	struct sock *sk;
d970dbf8	207	struct hlist_node *node;
38b0e42a	208	int hash = (loff_t )v;
bca735bd	209
49392e5e	210	if (hash >= sctp_ep_hashsize)
bca735bd VY	211	return -ENOMEM;
bca735bd VY	212
49392e5e	213	head = &sctp_ep_hashtable[hash];
bca735bd VY	214	sctp_local_bh_disable();
bca735bd VY	215	read_lock(&head->lock);
d970dbf8	216	sctp_for_each_hentry(epb, node, &head->chain) {
bca735bd VY	217	ep = sctp_ep(epb);
bca735bd VY	218	sk = epb->sk;
13d782f6 EB	219	if (!net_eq(sock_net(sk), priv->net))
13d782f6 EB	220	continue;
71338aa7	221	seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
49392e5e	222	sctp_sk(sk)->type, sk->sk_state, hash,
bca735bd VY	223	epb->bind_addr.port,
	224	sock_i_uid(sk), sock_i_ino(sk));
	225
	226	sctp_seq_dump_local_addrs(seq, epb);
	227	seq_printf(seq, "\n");
1da177e4	228	}
bca735bd VY	229	read_unlock(&head->lock);
bca735bd VY	230	sctp_local_bh_enable();
1da177e4 LT	231
	232	return 0;
	233	}
	234
56b3d975	235	static const struct seq_operations sctp_eps_ops = {
bca735bd VY	236	.start = sctp_eps_seq_start,
	237	.next = sctp_eps_seq_next,
	238	.stop = sctp_eps_seq_stop,
	239	.show = sctp_eps_seq_show,
	240	};
	241
	242
1da177e4 LT	243	/* Initialize the seq file operations for 'eps' object. */
	244	static int sctp_eps_seq_open(struct inode inode, struct file file)
	245	{
13d782f6 EB	246	return seq_open_net(inode, file, &sctp_eps_ops,
13d782f6 EB	247	sizeof(struct seq_net_private));
1da177e4 LT	248	}
1da177e4 LT	249
da7071d7	250	static const struct file_operations sctp_eps_seq_fops = {
1da177e4 LT	251	.open = sctp_eps_seq_open,
	252	.read = seq_read,
	253	.llseek = seq_lseek,
bca735bd	254	.release = seq_release,
1da177e4 LT	255	};
	256
	257	/* Set up the proc fs entry for 'eps' object. */
13d782f6	258	int __net_init sctp_eps_proc_init(struct net *net)
1da177e4 LT	259	{
	260	struct proc_dir_entry *p;
	261
13d782f6 EB	262	p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	263	&sctp_eps_seq_fops);
1da177e4 LT	264	if (!p)
	265	return -ENOMEM;
	266
1da177e4 LT	267	return 0;
	268	}
	269
	270	/* Cleanup the proc fs entry for 'eps' object. */
13d782f6	271	void sctp_eps_proc_exit(struct net *net)
1da177e4	272	{
13d782f6	273	remove_proc_entry("eps", net->sctp.proc_net_sctp);
1da177e4 LT	274	}
1da177e4 LT	275
bca735bd VY	276
	277	static void * sctp_assocs_seq_start(struct seq_file seq, loff_t pos)
	278	{
49392e5e	279	if (*pos >= sctp_assoc_hashsize)
bca735bd VY	280	return NULL;
	281
	282	if (*pos < 0)
	283	*pos = 0;
	284
	285	if (*pos == 0)
58fbbed4 NH	286	seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
	287	"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
	288	"RPORT LADDRS <-> RADDRS "
	289	"HBINT INS OUTS MAXRT T1X T2X RTXC\n");
bca735bd	290
bca735bd VY	291	return (void *)pos;
	292	}
	293
	294	static void sctp_assocs_seq_stop(struct seq_file seq, void v)
	295	{
bca735bd VY	296	}
	297
	298
	299	static void * sctp_assocs_seq_next(struct seq_file seq, void v, loff_t *pos)
	300	{
49392e5e	301	if (++*pos >= sctp_assoc_hashsize)
bca735bd VY	302	return NULL;
bca735bd VY	303
bca735bd VY	304	return pos;
	305	}
	306
1da177e4 LT	307	/* Display sctp associations (/proc/net/sctp/assocs). */
	308	static int sctp_assocs_seq_show(struct seq_file seq, void v)
	309	{
13d782f6	310	struct seq_net_private *priv = seq->private;
1da177e4 LT	311	struct sctp_hashbucket *head;
	312	struct sctp_ep_common *epb;
	313	struct sctp_association *assoc;
	314	struct sock *sk;
d970dbf8	315	struct hlist_node *node;
38b0e42a	316	int hash = (loff_t )v;
bca735bd	317
49392e5e	318	if (hash >= sctp_assoc_hashsize)
bca735bd VY	319	return -ENOMEM;
bca735bd VY	320
49392e5e	321	head = &sctp_assoc_hashtable[hash];
bca735bd VY	322	sctp_local_bh_disable();
bca735bd VY	323	read_lock(&head->lock);
d970dbf8	324	sctp_for_each_hentry(epb, node, &head->chain) {
bca735bd VY	325	assoc = sctp_assoc(epb);
bca735bd VY	326	sk = epb->sk;
13d782f6 EB	327	if (!net_eq(sock_net(sk), priv->net))
13d782f6 EB	328	continue;
bca735bd	329	seq_printf(seq,
71338aa7	330	"%8pK %8pK %-3d %-3d %-2d %-4d "
30e93560	331	"%4d %8d %8d %7d %5lu %-5d %5d ",
bca735bd	332	assoc, sk, sctp_sk(sk)->type, sk->sk_state,
58fbbed4 NH	333	assoc->state, hash,
58fbbed4 NH	334	assoc->assoc_id,
bca735bd	335	assoc->sndbuf_used,
6aa2551c	336	atomic_read(&assoc->rmem_alloc),
bca735bd VY	337	sock_i_uid(sk), sock_i_ino(sk),
bca735bd VY	338	epb->bind_addr.port,
30e93560	339	assoc->peer.port);
bca735bd VY	340	seq_printf(seq, " ");
	341	sctp_seq_dump_local_addrs(seq, epb);
	342	seq_printf(seq, "<-> ");
	343	sctp_seq_dump_remote_addrs(seq, assoc);
30e93560 NH	344	seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
	345	assoc->hbinterval, assoc->c.sinit_max_instreams,
	346	assoc->c.sinit_num_ostreams, assoc->max_retrans,
	347	assoc->init_retries, assoc->shutdown_retries,
	348	assoc->rtx_data_chunks);
bca735bd	349	seq_printf(seq, "\n");
1da177e4	350	}
bca735bd VY	351	read_unlock(&head->lock);
bca735bd VY	352	sctp_local_bh_enable();
1da177e4 LT	353
	354	return 0;
	355	}
	356
56b3d975	357	static const struct seq_operations sctp_assoc_ops = {
bca735bd VY	358	.start = sctp_assocs_seq_start,
	359	.next = sctp_assocs_seq_next,
	360	.stop = sctp_assocs_seq_stop,
	361	.show = sctp_assocs_seq_show,
	362	};
	363
1da177e4 LT	364	/* Initialize the seq file operations for 'assocs' object. */
	365	static int sctp_assocs_seq_open(struct inode inode, struct file file)
	366	{
13d782f6 EB	367	return seq_open_net(inode, file, &sctp_assoc_ops,
13d782f6 EB	368	sizeof(struct seq_net_private));
1da177e4 LT	369	}
1da177e4 LT	370
da7071d7	371	static const struct file_operations sctp_assocs_seq_fops = {
1da177e4 LT	372	.open = sctp_assocs_seq_open,
	373	.read = seq_read,
	374	.llseek = seq_lseek,
bca735bd	375	.release = seq_release,
1da177e4 LT	376	};
	377
	378	/* Set up the proc fs entry for 'assocs' object. */
13d782f6	379	int __net_init sctp_assocs_proc_init(struct net *net)
1da177e4 LT	380	{
	381	struct proc_dir_entry *p;
	382
13d782f6	383	p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
459eea74	384	&sctp_assocs_seq_fops);
1da177e4 LT	385	if (!p)
	386	return -ENOMEM;
	387
1da177e4 LT	388	return 0;
	389	}
	390
	391	/* Cleanup the proc fs entry for 'assocs' object. */
13d782f6	392	void sctp_assocs_proc_exit(struct net *net)
1da177e4	393	{
13d782f6	394	remove_proc_entry("assocs", net->sctp.proc_net_sctp);
1da177e4	395	}
20c2c1fd NH	396
	397	static void sctp_remaddr_seq_start(struct seq_file seq, loff_t *pos)
	398	{
	399	if (*pos >= sctp_assoc_hashsize)
	400	return NULL;
	401
	402	if (*pos < 0)
	403	*pos = 0;
	404
	405	if (*pos == 0)
	406	seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
	407	"REM_ADDR_RTX START\n");
	408
	409	return (void *)pos;
	410	}
	411
	412	static void sctp_remaddr_seq_next(struct seq_file seq, void v, loff_t pos)
	413	{
	414	if (++*pos >= sctp_assoc_hashsize)
	415	return NULL;
	416
	417	return pos;
	418	}
	419
	420	static void sctp_remaddr_seq_stop(struct seq_file seq, void v)
	421	{
20c2c1fd NH	422	}
	423
	424	static int sctp_remaddr_seq_show(struct seq_file seq, void v)
	425	{
13d782f6	426	struct seq_net_private *priv = seq->private;
20c2c1fd NH	427	struct sctp_hashbucket *head;
	428	struct sctp_ep_common *epb;
	429	struct sctp_association *assoc;
	430	struct hlist_node *node;
	431	struct sctp_transport *tsp;
	432	int hash = (loff_t )v;
	433
	434	if (hash >= sctp_assoc_hashsize)
	435	return -ENOMEM;
	436
	437	head = &sctp_assoc_hashtable[hash];
	438	sctp_local_bh_disable();
	439	read_lock(&head->lock);
	440	sctp_for_each_hentry(epb, node, &head->chain) {
13d782f6 EB	441	if (!net_eq(sock_net(epb->sk), priv->net))
13d782f6 EB	442	continue;
20c2c1fd NH	443	assoc = sctp_assoc(epb);
	444	list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
	445	transports) {
	446	/*
	447	* The remote address (ADDR)
	448	*/
	449	tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
	450	seq_printf(seq, " ");
	451
	452	/*
	453	* The association ID (ASSOC_ID)
	454	*/
	455	seq_printf(seq, "%d ", tsp->asoc->assoc_id);
	456
	457	/*
	458	* If the Heartbeat is active (HB_ACT)
	459	* Note: 1 = Active, 0 = Inactive
	460	*/
	461	seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
	462
	463	/*
	464	* Retransmit time out (RTO)
	465	*/
	466	seq_printf(seq, "%lu ", tsp->rto);
	467
	468	/*
	469	* Maximum path retransmit count (PATH_MAX_RTX)
	470	*/
	471	seq_printf(seq, "%d ", tsp->pathmaxrxt);
	472
	473	/*
	474	* remote address retransmit count (REM_ADDR_RTX)
	475	* Note: We don't have a way to tally this at the moment
	476	* so lets just leave it as zero for the moment
	477	*/
	478	seq_printf(seq, "0 ");
	479
	480	/*
	481	* remote address start time (START). This is also not
	482	* currently implemented, but we can record it with a
	483	* jiffies marker in a subsequent patch
	484	*/
	485	seq_printf(seq, "0");
	486
	487	seq_printf(seq, "\n");
	488	}
	489	}
	490
	491	read_unlock(&head->lock);
	492	sctp_local_bh_enable();
	493
	494	return 0;
	495
	496	}
	497
	498	static const struct seq_operations sctp_remaddr_ops = {
	499	.start = sctp_remaddr_seq_start,
	500	.next = sctp_remaddr_seq_next,
	501	.stop = sctp_remaddr_seq_stop,
	502	.show = sctp_remaddr_seq_show,
	503	};
	504
	505	/* Cleanup the proc fs entry for 'remaddr' object. */
13d782f6	506	void sctp_remaddr_proc_exit(struct net *net)
20c2c1fd	507	{
13d782f6	508	remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
20c2c1fd NH	509	}
	510
	511	static int sctp_remaddr_seq_open(struct inode inode, struct file file)
	512	{
13d782f6 EB	513	return seq_open_net(inode, file, &sctp_remaddr_ops,
13d782f6 EB	514	sizeof(struct seq_net_private));
20c2c1fd NH	515	}
	516
	517	static const struct file_operations sctp_remaddr_seq_fops = {
	518	.open = sctp_remaddr_seq_open,
	519	.read = seq_read,
	520	.llseek = seq_lseek,
	521	.release = seq_release,
	522	};
	523
13d782f6	524	int __net_init sctp_remaddr_proc_init(struct net *net)
20c2c1fd NH	525	{
	526	struct proc_dir_entry *p;
	527
13d782f6 EB	528	p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	529	&sctp_remaddr_seq_fops);
20c2c1fd NH	530	if (!p)
20c2c1fd NH	531	return -ENOMEM;
20c2c1fd NH	532	return 0;
20c2c1fd NH	533	}