[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)
{
	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_net,
};

/* 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;
		if (unlikely(peer == NULL)) {
			WARN(1, "Association %p with NULL primary path!\n", asoc);
			return;
		}

		primary = &peer->saddr;
	}

	rcu_read_lock();
	list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
		if (!laddr->valid)
			continue;

		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);
	}
	rcu_read_unlock();
}

/* 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;
	rcu_read_lock();
	list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
			transports) {
		addr = &transport->ipaddr;
		if (transport->dead)
			continue;

		af = sctp_get_af_specific(addr->sa.sa_family);
		if (af->cmp_addr(addr, primary)) {
			seq_printf(seq, "*");
		}
		af->seq_dump_addr(seq, addr);
	}
	rcu_read_unlock();
}

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;
	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, &head->chain) {
		ep = sctp_ep(epb);
		sk = epb->sk;
		if (!net_eq(sock_net(sk), seq_file_net(seq)))
			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,
			   from_kuid_munged(seq_user_ns(seq), 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_net,
};

/* 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 "
				"wmema wmemq sndbuf rcvbuf\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;
	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, &head->chain) {
		assoc = sctp_assoc(epb);
		sk = epb->sk;
		if (!net_eq(sock_net(sk), seq_file_net(seq)))
			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),
			   from_kuid_munged(seq_user_ns(seq), 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 "
			   "%8d %8d %8d %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,
			atomic_read(&sk->sk_wmem_alloc),
			sk->sk_wmem_queued,
			sk->sk_sndbuf,
			sk->sk_rcvbuf);
		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_net,
};

/* 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 sctp_hashbucket *head;
	struct sctp_ep_common *epb;
	struct sctp_association *assoc;
	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);
	rcu_read_lock();
	sctp_for_each_hentry(epb, &head->chain) {
		if (!net_eq(sock_net(epb->sk), seq_file_net(seq)))
			continue;
		assoc = sctp_assoc(epb);
		list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
					transports) {
			if (tsp->dead)
				continue;

			/*
			 * 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");
		}
	}

	rcu_read_unlock();
	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_net,
};

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,
0da9a0c2	105	.release = single_release_net,
1da177e4 LT	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	136	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
f9e42b85 DB	137	asoc = sctp_assoc(epb);
	138
	139	peer = asoc->peer.primary_path;
	140	if (unlikely(peer == NULL)) {
b527fe69	141	WARN(1, "Association %p with NULL primary path!\n", asoc);
f9e42b85 DB	142	return;
	143	}
	144
	145	primary = &peer->saddr;
bca735bd VY	146	}
bca735bd VY	147
0b0fe913 TG	148	rcu_read_lock();
	149	list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
	150	if (!laddr->valid)
	151	continue;
	152
5f242a13	153	addr = &laddr->a;
1da177e4	154	af = sctp_get_af_specific(addr->sa.sa_family);
bca735bd VY	155	if (primary && af->cmp_addr(addr, primary)) {
	156	seq_printf(seq, "*");
	157	}
5f242a13	158	af->seq_dump_addr(seq, addr);
1da177e4	159	}
0b0fe913	160	rcu_read_unlock();
1da177e4 LT	161	}
	162
	163	/* Dump remote addresses of an association. */
	164	static void sctp_seq_dump_remote_addrs(struct seq_file seq, struct sctp_association assoc)
	165	{
1da177e4	166	struct sctp_transport *transport;
bca735bd	167	union sctp_addr addr, primary;
1da177e4 LT	168	struct sctp_af *af;
1da177e4 LT	169
acd2bc96	170	primary = &assoc->peer.primary_addr;
45122ca2 TG	171	rcu_read_lock();
45122ca2 TG	172	list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
9dbc15f0	173	transports) {
5f242a13	174	addr = &transport->ipaddr;
45122ca2 TG	175	if (transport->dead)
	176	continue;
	177
1da177e4	178	af = sctp_get_af_specific(addr->sa.sa_family);
acd2bc96	179	if (af->cmp_addr(addr, primary)) {
bca735bd VY	180	seq_printf(seq, "*");
bca735bd VY	181	}
5f242a13	182	af->seq_dump_addr(seq, addr);
1da177e4	183	}
45122ca2	184	rcu_read_unlock();
1da177e4 LT	185	}
1da177e4 LT	186
bca735bd VY	187	static void * sctp_eps_seq_start(struct seq_file seq, loff_t pos)
bca735bd VY	188	{
49392e5e	189	if (*pos >= sctp_ep_hashsize)
bca735bd VY	190	return NULL;
	191
	192	if (*pos < 0)
	193	*pos = 0;
	194
	195	if (*pos == 0)
	196	seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
	197
bca735bd VY	198	return (void *)pos;
	199	}
	200
	201	static void sctp_eps_seq_stop(struct seq_file seq, void v)
	202	{
bca735bd VY	203	}
	204
	205
	206	static void * sctp_eps_seq_next(struct seq_file seq, void v, loff_t *pos)
	207	{
49392e5e	208	if (++*pos >= sctp_ep_hashsize)
bca735bd VY	209	return NULL;
bca735bd VY	210
bca735bd VY	211	return pos;
	212	}
	213
	214
1da177e4 LT	215	/* Display sctp endpoints (/proc/net/sctp/eps). */
	216	static int sctp_eps_seq_show(struct seq_file seq, void v)
	217	{
	218	struct sctp_hashbucket *head;
	219	struct sctp_ep_common *epb;
	220	struct sctp_endpoint *ep;
	221	struct sock *sk;
38b0e42a	222	int hash = (loff_t )v;
bca735bd	223
49392e5e	224	if (hash >= sctp_ep_hashsize)
bca735bd VY	225	return -ENOMEM;
bca735bd VY	226
49392e5e	227	head = &sctp_ep_hashtable[hash];
bca735bd VY	228	sctp_local_bh_disable();
bca735bd VY	229	read_lock(&head->lock);
b67bfe0d	230	sctp_for_each_hentry(epb, &head->chain) {
bca735bd VY	231	ep = sctp_ep(epb);
bca735bd VY	232	sk = epb->sk;
6932f119	233	if (!net_eq(sock_net(sk), seq_file_net(seq)))
13d782f6	234	continue;
71338aa7	235	seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
49392e5e	236	sctp_sk(sk)->type, sk->sk_state, hash,
bca735bd	237	epb->bind_addr.port,
a7cb5a49 EB	238	from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
a7cb5a49 EB	239	sock_i_ino(sk));
bca735bd VY	240
	241	sctp_seq_dump_local_addrs(seq, epb);
	242	seq_printf(seq, "\n");
1da177e4	243	}
bca735bd VY	244	read_unlock(&head->lock);
bca735bd VY	245	sctp_local_bh_enable();
1da177e4 LT	246
	247	return 0;
	248	}
	249
56b3d975	250	static const struct seq_operations sctp_eps_ops = {
bca735bd VY	251	.start = sctp_eps_seq_start,
	252	.next = sctp_eps_seq_next,
	253	.stop = sctp_eps_seq_stop,
	254	.show = sctp_eps_seq_show,
	255	};
	256
	257
1da177e4 LT	258	/* Initialize the seq file operations for 'eps' object. */
	259	static int sctp_eps_seq_open(struct inode inode, struct file file)
	260	{
13d782f6 EB	261	return seq_open_net(inode, file, &sctp_eps_ops,
13d782f6 EB	262	sizeof(struct seq_net_private));
1da177e4 LT	263	}
1da177e4 LT	264
da7071d7	265	static const struct file_operations sctp_eps_seq_fops = {
1da177e4 LT	266	.open = sctp_eps_seq_open,
	267	.read = seq_read,
	268	.llseek = seq_lseek,
0da9a0c2	269	.release = seq_release_net,
1da177e4 LT	270	};
	271
	272	/* Set up the proc fs entry for 'eps' object. */
13d782f6	273	int __net_init sctp_eps_proc_init(struct net *net)
1da177e4 LT	274	{
	275	struct proc_dir_entry *p;
	276
13d782f6 EB	277	p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	278	&sctp_eps_seq_fops);
1da177e4 LT	279	if (!p)
	280	return -ENOMEM;
	281
1da177e4 LT	282	return 0;
	283	}
	284
	285	/* Cleanup the proc fs entry for 'eps' object. */
13d782f6	286	void sctp_eps_proc_exit(struct net *net)
1da177e4	287	{
13d782f6	288	remove_proc_entry("eps", net->sctp.proc_net_sctp);
1da177e4 LT	289	}
1da177e4 LT	290
bca735bd VY	291
	292	static void * sctp_assocs_seq_start(struct seq_file seq, loff_t pos)
	293	{
49392e5e	294	if (*pos >= sctp_assoc_hashsize)
bca735bd VY	295	return NULL;
	296
	297	if (*pos < 0)
	298	*pos = 0;
	299
	300	if (*pos == 0)
58fbbed4 NH	301	seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
	302	"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
	303	"RPORT LADDRS <-> RADDRS "
f406c8b9 DD	304	"HBINT INS OUTS MAXRT T1X T2X RTXC "
f406c8b9 DD	305	"wmema wmemq sndbuf rcvbuf\n");
bca735bd	306
bca735bd VY	307	return (void *)pos;
	308	}
	309
	310	static void sctp_assocs_seq_stop(struct seq_file seq, void v)
	311	{
bca735bd VY	312	}
	313
	314
	315	static void * sctp_assocs_seq_next(struct seq_file seq, void v, loff_t *pos)
	316	{
49392e5e	317	if (++*pos >= sctp_assoc_hashsize)
bca735bd VY	318	return NULL;
bca735bd VY	319
bca735bd VY	320	return pos;
	321	}
	322
1da177e4 LT	323	/* Display sctp associations (/proc/net/sctp/assocs). */
	324	static int sctp_assocs_seq_show(struct seq_file seq, void v)
	325	{
	326	struct sctp_hashbucket *head;
	327	struct sctp_ep_common *epb;
	328	struct sctp_association *assoc;
	329	struct sock *sk;
38b0e42a	330	int hash = (loff_t )v;
bca735bd	331
49392e5e	332	if (hash >= sctp_assoc_hashsize)
bca735bd VY	333	return -ENOMEM;
bca735bd VY	334
49392e5e	335	head = &sctp_assoc_hashtable[hash];
bca735bd VY	336	sctp_local_bh_disable();
bca735bd VY	337	read_lock(&head->lock);
b67bfe0d	338	sctp_for_each_hentry(epb, &head->chain) {
bca735bd VY	339	assoc = sctp_assoc(epb);
bca735bd VY	340	sk = epb->sk;
6932f119	341	if (!net_eq(sock_net(sk), seq_file_net(seq)))
13d782f6	342	continue;
bca735bd	343	seq_printf(seq,
71338aa7	344	"%8pK %8pK %-3d %-3d %-2d %-4d "
30e93560	345	"%4d %8d %8d %7d %5lu %-5d %5d ",
bca735bd	346	assoc, sk, sctp_sk(sk)->type, sk->sk_state,
58fbbed4 NH	347	assoc->state, hash,
58fbbed4 NH	348	assoc->assoc_id,
bca735bd	349	assoc->sndbuf_used,
6aa2551c	350	atomic_read(&assoc->rmem_alloc),
a7cb5a49 EB	351	from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
a7cb5a49 EB	352	sock_i_ino(sk),
bca735bd	353	epb->bind_addr.port,
30e93560	354	assoc->peer.port);
bca735bd VY	355	seq_printf(seq, " ");
	356	sctp_seq_dump_local_addrs(seq, epb);
	357	seq_printf(seq, "<-> ");
	358	sctp_seq_dump_remote_addrs(seq, assoc);
f406c8b9 DD	359	seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
f406c8b9 DD	360	"%8d %8d %8d %8d",
30e93560 NH	361	assoc->hbinterval, assoc->c.sinit_max_instreams,
	362	assoc->c.sinit_num_ostreams, assoc->max_retrans,
	363	assoc->init_retries, assoc->shutdown_retries,
f406c8b9 DD	364	assoc->rtx_data_chunks,
	365	atomic_read(&sk->sk_wmem_alloc),
	366	sk->sk_wmem_queued,
	367	sk->sk_sndbuf,
	368	sk->sk_rcvbuf);
bca735bd	369	seq_printf(seq, "\n");
1da177e4	370	}
bca735bd VY	371	read_unlock(&head->lock);
bca735bd VY	372	sctp_local_bh_enable();
1da177e4 LT	373
	374	return 0;
	375	}
	376
56b3d975	377	static const struct seq_operations sctp_assoc_ops = {
bca735bd VY	378	.start = sctp_assocs_seq_start,
	379	.next = sctp_assocs_seq_next,
	380	.stop = sctp_assocs_seq_stop,
	381	.show = sctp_assocs_seq_show,
	382	};
	383
1da177e4 LT	384	/* Initialize the seq file operations for 'assocs' object. */
	385	static int sctp_assocs_seq_open(struct inode inode, struct file file)
	386	{
13d782f6 EB	387	return seq_open_net(inode, file, &sctp_assoc_ops,
13d782f6 EB	388	sizeof(struct seq_net_private));
1da177e4 LT	389	}
1da177e4 LT	390
da7071d7	391	static const struct file_operations sctp_assocs_seq_fops = {
1da177e4 LT	392	.open = sctp_assocs_seq_open,
	393	.read = seq_read,
	394	.llseek = seq_lseek,
0da9a0c2	395	.release = seq_release_net,
1da177e4 LT	396	};
	397
	398	/* Set up the proc fs entry for 'assocs' object. */
13d782f6	399	int __net_init sctp_assocs_proc_init(struct net *net)
1da177e4 LT	400	{
	401	struct proc_dir_entry *p;
	402
13d782f6	403	p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
459eea74	404	&sctp_assocs_seq_fops);
1da177e4 LT	405	if (!p)
	406	return -ENOMEM;
	407
1da177e4 LT	408	return 0;
	409	}
	410
	411	/* Cleanup the proc fs entry for 'assocs' object. */
13d782f6	412	void sctp_assocs_proc_exit(struct net *net)
1da177e4	413	{
13d782f6	414	remove_proc_entry("assocs", net->sctp.proc_net_sctp);
1da177e4	415	}
20c2c1fd NH	416
	417	static void sctp_remaddr_seq_start(struct seq_file seq, loff_t *pos)
	418	{
	419	if (*pos >= sctp_assoc_hashsize)
	420	return NULL;
	421
	422	if (*pos < 0)
	423	*pos = 0;
	424
	425	if (*pos == 0)
	426	seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
	427	"REM_ADDR_RTX START\n");
	428
	429	return (void *)pos;
	430	}
	431
	432	static void sctp_remaddr_seq_next(struct seq_file seq, void v, loff_t pos)
	433	{
	434	if (++*pos >= sctp_assoc_hashsize)
	435	return NULL;
	436
	437	return pos;
	438	}
	439
	440	static void sctp_remaddr_seq_stop(struct seq_file seq, void v)
	441	{
20c2c1fd NH	442	}
	443
	444	static int sctp_remaddr_seq_show(struct seq_file seq, void v)
	445	{
	446	struct sctp_hashbucket *head;
	447	struct sctp_ep_common *epb;
	448	struct sctp_association *assoc;
20c2c1fd NH	449	struct sctp_transport *tsp;
	450	int hash = (loff_t )v;
	451
	452	if (hash >= sctp_assoc_hashsize)
	453	return -ENOMEM;
	454
	455	head = &sctp_assoc_hashtable[hash];
	456	sctp_local_bh_disable();
	457	read_lock(&head->lock);
45122ca2	458	rcu_read_lock();
b67bfe0d	459	sctp_for_each_hentry(epb, &head->chain) {
6932f119	460	if (!net_eq(sock_net(epb->sk), seq_file_net(seq)))
13d782f6	461	continue;
20c2c1fd	462	assoc = sctp_assoc(epb);
45122ca2	463	list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
20c2c1fd	464	transports) {
45122ca2 TG	465	if (tsp->dead)
	466	continue;
	467
20c2c1fd NH	468	/*
	469	* The remote address (ADDR)
	470	*/
	471	tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
	472	seq_printf(seq, " ");
	473
	474	/*
	475	* The association ID (ASSOC_ID)
	476	*/
	477	seq_printf(seq, "%d ", tsp->asoc->assoc_id);
	478
	479	/*
	480	* If the Heartbeat is active (HB_ACT)
	481	* Note: 1 = Active, 0 = Inactive
	482	*/
	483	seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
	484
	485	/*
	486	* Retransmit time out (RTO)
	487	*/
	488	seq_printf(seq, "%lu ", tsp->rto);
	489
	490	/*
	491	* Maximum path retransmit count (PATH_MAX_RTX)
	492	*/
	493	seq_printf(seq, "%d ", tsp->pathmaxrxt);
	494
	495	/*
	496	* remote address retransmit count (REM_ADDR_RTX)
	497	* Note: We don't have a way to tally this at the moment
	498	* so lets just leave it as zero for the moment
	499	*/
	500	seq_printf(seq, "0 ");
	501
	502	/*
	503	* remote address start time (START). This is also not
	504	* currently implemented, but we can record it with a
	505	* jiffies marker in a subsequent patch
	506	*/
	507	seq_printf(seq, "0");
	508
	509	seq_printf(seq, "\n");
	510	}
	511	}
	512
45122ca2	513	rcu_read_unlock();
20c2c1fd NH	514	read_unlock(&head->lock);
	515	sctp_local_bh_enable();
	516
	517	return 0;
	518
	519	}
	520
	521	static const struct seq_operations sctp_remaddr_ops = {
	522	.start = sctp_remaddr_seq_start,
	523	.next = sctp_remaddr_seq_next,
	524	.stop = sctp_remaddr_seq_stop,
	525	.show = sctp_remaddr_seq_show,
	526	};
	527
	528	/* Cleanup the proc fs entry for 'remaddr' object. */
13d782f6	529	void sctp_remaddr_proc_exit(struct net *net)
20c2c1fd	530	{
13d782f6	531	remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
20c2c1fd NH	532	}
	533
	534	static int sctp_remaddr_seq_open(struct inode inode, struct file file)
	535	{
13d782f6 EB	536	return seq_open_net(inode, file, &sctp_remaddr_ops,
13d782f6 EB	537	sizeof(struct seq_net_private));
20c2c1fd NH	538	}
	539
	540	static const struct file_operations sctp_remaddr_seq_fops = {
	541	.open = sctp_remaddr_seq_open,
	542	.read = seq_read,
	543	.llseek = seq_lseek,
0da9a0c2	544	.release = seq_release_net,
20c2c1fd NH	545	};
20c2c1fd NH	546
13d782f6	547	int __net_init sctp_remaddr_proc_init(struct net *net)
20c2c1fd NH	548	{
	549	struct proc_dir_entry *p;
	550
13d782f6 EB	551	p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	552	&sctp_remaddr_seq_fops);
20c2c1fd NH	553	if (!p)
20c2c1fd NH	554	return -ENOMEM;
20c2c1fd NH	555	return 0;
20c2c1fd NH	556	}