[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, see
 * <http://www.gnu.org/licenses/>.
 *
 * Please send any bug reports or fixes you make to the
 * email address(es):
 *    lksctp developers <linux-sctp@vger.kernel.org>
 *
 * Written or modified by:
 *    Sridhar Samudrala <sri@us.ibm.com>
 */

#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(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];
	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 %5u %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);
	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];
	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 %7u %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);
	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 STATE\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];
	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_puts(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_puts(seq, "0 ");

			/*
			 * The current state of this destination. I.e.
			 * SCTP_ACTIVE, SCTP_INACTIVE, ...
			 */
			seq_printf(seq, "%d", tsp->state);

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

	rcu_read_unlock();
	read_unlock(&head->lock);
	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
4b2f13a2 JK	19	* along with GNU CC; see the file COPYING. If not, see
4b2f13a2 JK	20	* <http://www.gnu.org/licenses/>.
1da177e4 LT	21	*
	22	* Please send any bug reports or fixes you make to the
	23	* email address(es):
91705c61	24	* lksctp developers <linux-sctp@vger.kernel.org>
1da177e4	25	*
1da177e4 LT	26	* Written or modified by:
1da177e4 LT	27	* Sridhar Samudrala <sri@us.ibm.com>
1da177e4 LT	28	*/
	29
	30	#include <linux/types.h>
	31	#include <linux/seq_file.h>
	32	#include <linux/init.h>
bc3b2d7f	33	#include <linux/export.h>
1da177e4	34	#include <net/sctp/sctp.h>
3f5340a6	35	#include <net/ip.h> /* for snmp_fold_field */
1da177e4	36
5833929c	37	static const struct snmp_mib sctp_snmp_list[] = {
1da177e4 LT	38	SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
	39	SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
	40	SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
	41	SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
	42	SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
	43	SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
	44	SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
	45	SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
	46	SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
	47	SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
	48	SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
	49	SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
	50	SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
	51	SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
	52	SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
	53	SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
	54	SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
ac0b0462 SS	55	SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
	56	SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
	57	SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
	58	SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
	59	SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
	60	SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
	61	SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
	62	SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
	63	SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
	64	SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
	65	SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
	66	SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
	67	SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
	68	SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
	69	SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
d2287f84	70	SNMP_MIB_SENTINEL
1da177e4 LT	71	};
1da177e4 LT	72
1da177e4 LT	73	/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
	74	static int sctp_snmp_seq_show(struct seq_file seq, void v)
	75	{
13d782f6	76	struct net *net = seq->private;
1da177e4 LT	77	int i;
	78
	79	for (i = 0; sctp_snmp_list[i].name != NULL; i++)
	80	seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
c9f2dba6	81	snmp_fold_field(net->sctp.sctp_statistics,
1da177e4 LT	82	sctp_snmp_list[i].entry));
	83
	84	return 0;
	85	}
	86
	87	/* Initialize the seq file operations for 'snmp' object. */
	88	static int sctp_snmp_seq_open(struct inode inode, struct file file)
	89	{
13d782f6	90	return single_open_net(inode, file, sctp_snmp_seq_show);
1da177e4 LT	91	}
1da177e4 LT	92
da7071d7	93	static const struct file_operations sctp_snmp_seq_fops = {
1da177e4 LT	94	.owner = THIS_MODULE,
	95	.open = sctp_snmp_seq_open,
	96	.read = seq_read,
	97	.llseek = seq_lseek,
0da9a0c2	98	.release = single_release_net,
1da177e4 LT	99	};
	100
	101	/* Set up the proc fs entry for 'snmp' object. */
13d782f6	102	int __net_init sctp_snmp_proc_init(struct net *net)
1da177e4 LT	103	{
	104	struct proc_dir_entry *p;
	105
13d782f6 EB	106	p = proc_create("snmp", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	107	&sctp_snmp_seq_fops);
1da177e4 LT	108	if (!p)
	109	return -ENOMEM;
	110
1da177e4 LT	111	return 0;
	112	}
	113
	114	/* Cleanup the proc fs entry for 'snmp' object. */
13d782f6	115	void sctp_snmp_proc_exit(struct net *net)
1da177e4	116	{
13d782f6	117	remove_proc_entry("snmp", net->sctp.proc_net_sctp);
1da177e4 LT	118	}
	119
	120	/* Dump local addresses of an association/endpoint. */
	121	static void sctp_seq_dump_local_addrs(struct seq_file seq, struct sctp_ep_common epb)
	122	{
bca735bd	123	struct sctp_association *asoc;
1da177e4	124	struct sctp_sockaddr_entry *laddr;
bca735bd VY	125	struct sctp_transport *peer;
bca735bd VY	126	union sctp_addr addr, primary = NULL;
1da177e4 LT	127	struct sctp_af *af;
1da177e4 LT	128
bca735bd	129	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
f9e42b85 DB	130	asoc = sctp_assoc(epb);
	131
	132	peer = asoc->peer.primary_path;
	133	if (unlikely(peer == NULL)) {
b527fe69	134	WARN(1, "Association %p with NULL primary path!\n", asoc);
f9e42b85 DB	135	return;
	136	}
	137
	138	primary = &peer->saddr;
bca735bd VY	139	}
bca735bd VY	140
0b0fe913 TG	141	rcu_read_lock();
	142	list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
	143	if (!laddr->valid)
	144	continue;
	145
5f242a13	146	addr = &laddr->a;
1da177e4	147	af = sctp_get_af_specific(addr->sa.sa_family);
bca735bd VY	148	if (primary && af->cmp_addr(addr, primary)) {
	149	seq_printf(seq, "*");
	150	}
5f242a13	151	af->seq_dump_addr(seq, addr);
1da177e4	152	}
0b0fe913	153	rcu_read_unlock();
1da177e4 LT	154	}
	155
	156	/* Dump remote addresses of an association. */
	157	static void sctp_seq_dump_remote_addrs(struct seq_file seq, struct sctp_association assoc)
	158	{
1da177e4	159	struct sctp_transport *transport;
bca735bd	160	union sctp_addr addr, primary;
1da177e4 LT	161	struct sctp_af *af;
1da177e4 LT	162
acd2bc96	163	primary = &assoc->peer.primary_addr;
45122ca2 TG	164	rcu_read_lock();
45122ca2 TG	165	list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
9dbc15f0	166	transports) {
5f242a13	167	addr = &transport->ipaddr;
45122ca2 TG	168	if (transport->dead)
	169	continue;
	170
1da177e4	171	af = sctp_get_af_specific(addr->sa.sa_family);
acd2bc96	172	if (af->cmp_addr(addr, primary)) {
bca735bd VY	173	seq_printf(seq, "*");
bca735bd VY	174	}
5f242a13	175	af->seq_dump_addr(seq, addr);
1da177e4	176	}
45122ca2	177	rcu_read_unlock();
1da177e4 LT	178	}
1da177e4 LT	179
26ac8e5f	180	static void sctp_eps_seq_start(struct seq_file seq, loff_t *pos)
bca735bd	181	{
49392e5e	182	if (*pos >= sctp_ep_hashsize)
bca735bd VY	183	return NULL;
	184
	185	if (*pos < 0)
	186	*pos = 0;
	187
	188	if (*pos == 0)
	189	seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
	190
bca735bd VY	191	return (void *)pos;
	192	}
	193
	194	static void sctp_eps_seq_stop(struct seq_file seq, void v)
	195	{
bca735bd VY	196	}
	197
	198
26ac8e5f	199	static void sctp_eps_seq_next(struct seq_file seq, void v, loff_t pos)
bca735bd	200	{
49392e5e	201	if (++*pos >= sctp_ep_hashsize)
bca735bd VY	202	return NULL;
bca735bd VY	203
bca735bd VY	204	return pos;
	205	}
	206
	207
1da177e4 LT	208	/* Display sctp endpoints (/proc/net/sctp/eps). */
	209	static int sctp_eps_seq_show(struct seq_file seq, void v)
	210	{
	211	struct sctp_hashbucket *head;
	212	struct sctp_ep_common *epb;
	213	struct sctp_endpoint *ep;
	214	struct sock *sk;
38b0e42a	215	int hash = (loff_t )v;
bca735bd	216
49392e5e	217	if (hash >= sctp_ep_hashsize)
bca735bd VY	218	return -ENOMEM;
bca735bd VY	219
49392e5e	220	head = &sctp_ep_hashtable[hash];
79b91130	221	local_bh_disable();
bca735bd	222	read_lock(&head->lock);
b67bfe0d	223	sctp_for_each_hentry(epb, &head->chain) {
bca735bd VY	224	ep = sctp_ep(epb);
bca735bd VY	225	sk = epb->sk;
6932f119	226	if (!net_eq(sock_net(sk), seq_file_net(seq)))
13d782f6	227	continue;
d14c5ab6	228	seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
49392e5e	229	sctp_sk(sk)->type, sk->sk_state, hash,
bca735bd	230	epb->bind_addr.port,
a7cb5a49 EB	231	from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
a7cb5a49 EB	232	sock_i_ino(sk));
bca735bd VY	233
	234	sctp_seq_dump_local_addrs(seq, epb);
	235	seq_printf(seq, "\n");
1da177e4	236	}
bca735bd	237	read_unlock(&head->lock);
79b91130	238	local_bh_enable();
1da177e4 LT	239
	240	return 0;
	241	}
	242
56b3d975	243	static const struct seq_operations sctp_eps_ops = {
bca735bd VY	244	.start = sctp_eps_seq_start,
	245	.next = sctp_eps_seq_next,
	246	.stop = sctp_eps_seq_stop,
	247	.show = sctp_eps_seq_show,
	248	};
	249
	250
1da177e4 LT	251	/* Initialize the seq file operations for 'eps' object. */
	252	static int sctp_eps_seq_open(struct inode inode, struct file file)
	253	{
13d782f6 EB	254	return seq_open_net(inode, file, &sctp_eps_ops,
13d782f6 EB	255	sizeof(struct seq_net_private));
1da177e4 LT	256	}
1da177e4 LT	257
da7071d7	258	static const struct file_operations sctp_eps_seq_fops = {
1da177e4 LT	259	.open = sctp_eps_seq_open,
	260	.read = seq_read,
	261	.llseek = seq_lseek,
0da9a0c2	262	.release = seq_release_net,
1da177e4 LT	263	};
	264
	265	/* Set up the proc fs entry for 'eps' object. */
13d782f6	266	int __net_init sctp_eps_proc_init(struct net *net)
1da177e4 LT	267	{
	268	struct proc_dir_entry *p;
	269
13d782f6 EB	270	p = proc_create("eps", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	271	&sctp_eps_seq_fops);
1da177e4 LT	272	if (!p)
	273	return -ENOMEM;
	274
1da177e4 LT	275	return 0;
	276	}
	277
	278	/* Cleanup the proc fs entry for 'eps' object. */
13d782f6	279	void sctp_eps_proc_exit(struct net *net)
1da177e4	280	{
13d782f6	281	remove_proc_entry("eps", net->sctp.proc_net_sctp);
1da177e4 LT	282	}
1da177e4 LT	283
bca735bd	284
26ac8e5f	285	static void sctp_assocs_seq_start(struct seq_file seq, loff_t *pos)
bca735bd	286	{
49392e5e	287	if (*pos >= sctp_assoc_hashsize)
bca735bd VY	288	return NULL;
	289
	290	if (*pos < 0)
	291	*pos = 0;
	292
	293	if (*pos == 0)
58fbbed4 NH	294	seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
	295	"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
	296	"RPORT LADDRS <-> RADDRS "
f406c8b9 DD	297	"HBINT INS OUTS MAXRT T1X T2X RTXC "
f406c8b9 DD	298	"wmema wmemq sndbuf rcvbuf\n");
bca735bd	299
bca735bd VY	300	return (void *)pos;
	301	}
	302
	303	static void sctp_assocs_seq_stop(struct seq_file seq, void v)
	304	{
bca735bd VY	305	}
	306
	307
26ac8e5f	308	static void sctp_assocs_seq_next(struct seq_file seq, void v, loff_t pos)
bca735bd	309	{
49392e5e	310	if (++*pos >= sctp_assoc_hashsize)
bca735bd VY	311	return NULL;
bca735bd VY	312
bca735bd VY	313	return pos;
	314	}
	315
1da177e4 LT	316	/* Display sctp associations (/proc/net/sctp/assocs). */
	317	static int sctp_assocs_seq_show(struct seq_file seq, void v)
	318	{
	319	struct sctp_hashbucket *head;
	320	struct sctp_ep_common *epb;
	321	struct sctp_association *assoc;
	322	struct sock *sk;
38b0e42a	323	int hash = (loff_t )v;
bca735bd	324
49392e5e	325	if (hash >= sctp_assoc_hashsize)
bca735bd VY	326	return -ENOMEM;
bca735bd VY	327
49392e5e	328	head = &sctp_assoc_hashtable[hash];
79b91130	329	local_bh_disable();
bca735bd	330	read_lock(&head->lock);
b67bfe0d	331	sctp_for_each_hentry(epb, &head->chain) {
bca735bd VY	332	assoc = sctp_assoc(epb);
bca735bd VY	333	sk = epb->sk;
6932f119	334	if (!net_eq(sock_net(sk), seq_file_net(seq)))
13d782f6	335	continue;
bca735bd	336	seq_printf(seq,
71338aa7	337	"%8pK %8pK %-3d %-3d %-2d %-4d "
d14c5ab6	338	"%4d %8d %8d %7u %5lu %-5d %5d ",
bca735bd	339	assoc, sk, sctp_sk(sk)->type, sk->sk_state,
58fbbed4 NH	340	assoc->state, hash,
58fbbed4 NH	341	assoc->assoc_id,
bca735bd	342	assoc->sndbuf_used,
6aa2551c	343	atomic_read(&assoc->rmem_alloc),
a7cb5a49 EB	344	from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
a7cb5a49 EB	345	sock_i_ino(sk),
bca735bd	346	epb->bind_addr.port,
30e93560	347	assoc->peer.port);
bca735bd VY	348	seq_printf(seq, " ");
	349	sctp_seq_dump_local_addrs(seq, epb);
	350	seq_printf(seq, "<-> ");
	351	sctp_seq_dump_remote_addrs(seq, assoc);
f406c8b9 DD	352	seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
f406c8b9 DD	353	"%8d %8d %8d %8d",
30e93560 NH	354	assoc->hbinterval, assoc->c.sinit_max_instreams,
	355	assoc->c.sinit_num_ostreams, assoc->max_retrans,
	356	assoc->init_retries, assoc->shutdown_retries,
f406c8b9 DD	357	assoc->rtx_data_chunks,
	358	atomic_read(&sk->sk_wmem_alloc),
	359	sk->sk_wmem_queued,
	360	sk->sk_sndbuf,
	361	sk->sk_rcvbuf);
bca735bd	362	seq_printf(seq, "\n");
1da177e4	363	}
bca735bd	364	read_unlock(&head->lock);
79b91130	365	local_bh_enable();
1da177e4 LT	366
	367	return 0;
	368	}
	369
56b3d975	370	static const struct seq_operations sctp_assoc_ops = {
bca735bd VY	371	.start = sctp_assocs_seq_start,
	372	.next = sctp_assocs_seq_next,
	373	.stop = sctp_assocs_seq_stop,
	374	.show = sctp_assocs_seq_show,
	375	};
	376
1da177e4 LT	377	/* Initialize the seq file operations for 'assocs' object. */
	378	static int sctp_assocs_seq_open(struct inode inode, struct file file)
	379	{
13d782f6 EB	380	return seq_open_net(inode, file, &sctp_assoc_ops,
13d782f6 EB	381	sizeof(struct seq_net_private));
1da177e4 LT	382	}
1da177e4 LT	383
da7071d7	384	static const struct file_operations sctp_assocs_seq_fops = {
1da177e4 LT	385	.open = sctp_assocs_seq_open,
	386	.read = seq_read,
	387	.llseek = seq_lseek,
0da9a0c2	388	.release = seq_release_net,
1da177e4 LT	389	};
	390
	391	/* Set up the proc fs entry for 'assocs' object. */
13d782f6	392	int __net_init sctp_assocs_proc_init(struct net *net)
1da177e4 LT	393	{
	394	struct proc_dir_entry *p;
	395
13d782f6	396	p = proc_create("assocs", S_IRUGO, net->sctp.proc_net_sctp,
459eea74	397	&sctp_assocs_seq_fops);
1da177e4 LT	398	if (!p)
	399	return -ENOMEM;
	400
1da177e4 LT	401	return 0;
	402	}
	403
	404	/* Cleanup the proc fs entry for 'assocs' object. */
13d782f6	405	void sctp_assocs_proc_exit(struct net *net)
1da177e4	406	{
13d782f6	407	remove_proc_entry("assocs", net->sctp.proc_net_sctp);
1da177e4	408	}
20c2c1fd NH	409
	410	static void sctp_remaddr_seq_start(struct seq_file seq, loff_t *pos)
	411	{
	412	if (*pos >= sctp_assoc_hashsize)
	413	return NULL;
	414
	415	if (*pos < 0)
	416	*pos = 0;
	417
	418	if (*pos == 0)
	419	seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
891310d5	420	"REM_ADDR_RTX START STATE\n");
20c2c1fd NH	421
	422	return (void *)pos;
	423	}
	424
	425	static void sctp_remaddr_seq_next(struct seq_file seq, void v, loff_t pos)
	426	{
	427	if (++*pos >= sctp_assoc_hashsize)
	428	return NULL;
	429
	430	return pos;
	431	}
	432
	433	static void sctp_remaddr_seq_stop(struct seq_file seq, void v)
	434	{
20c2c1fd NH	435	}
	436
	437	static int sctp_remaddr_seq_show(struct seq_file seq, void v)
	438	{
	439	struct sctp_hashbucket *head;
	440	struct sctp_ep_common *epb;
	441	struct sctp_association *assoc;
20c2c1fd NH	442	struct sctp_transport *tsp;
	443	int hash = (loff_t )v;
	444
	445	if (hash >= sctp_assoc_hashsize)
	446	return -ENOMEM;
	447
	448	head = &sctp_assoc_hashtable[hash];
79b91130	449	local_bh_disable();
20c2c1fd	450	read_lock(&head->lock);
45122ca2	451	rcu_read_lock();
b67bfe0d	452	sctp_for_each_hentry(epb, &head->chain) {
6932f119	453	if (!net_eq(sock_net(epb->sk), seq_file_net(seq)))
13d782f6	454	continue;
20c2c1fd	455	assoc = sctp_assoc(epb);
45122ca2	456	list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
20c2c1fd	457	transports) {
45122ca2 TG	458	if (tsp->dead)
	459	continue;
	460
20c2c1fd NH	461	/*
	462	* The remote address (ADDR)
	463	*/
	464	tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
	465	seq_printf(seq, " ");
	466
	467	/*
	468	* The association ID (ASSOC_ID)
	469	*/
	470	seq_printf(seq, "%d ", tsp->asoc->assoc_id);
	471
	472	/*
	473	* If the Heartbeat is active (HB_ACT)
	474	* Note: 1 = Active, 0 = Inactive
	475	*/
	476	seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
	477
	478	/*
	479	* Retransmit time out (RTO)
	480	*/
	481	seq_printf(seq, "%lu ", tsp->rto);
	482
	483	/*
	484	* Maximum path retransmit count (PATH_MAX_RTX)
	485	*/
	486	seq_printf(seq, "%d ", tsp->pathmaxrxt);
	487
	488	/*
	489	* remote address retransmit count (REM_ADDR_RTX)
	490	* Note: We don't have a way to tally this at the moment
	491	* so lets just leave it as zero for the moment
	492	*/
afb6befc	493	seq_puts(seq, "0 ");
20c2c1fd NH	494
	495	/*
	496	* remote address start time (START). This is also not
	497	* currently implemented, but we can record it with a
	498	* jiffies marker in a subsequent patch
	499	*/
afb6befc	500	seq_puts(seq, "0 ");
891310d5 MB	501
	502	/*
	503	* The current state of this destination. I.e.
	504	* SCTP_ACTIVE, SCTP_INACTIVE, ...
	505	*/
	506	seq_printf(seq, "%d", tsp->state);
20c2c1fd NH	507
	508	seq_printf(seq, "\n");
	509	}
	510	}
	511
45122ca2	512	rcu_read_unlock();
20c2c1fd	513	read_unlock(&head->lock);
79b91130	514	local_bh_enable();
20c2c1fd NH	515
	516	return 0;
	517
	518	}
	519
	520	static const struct seq_operations sctp_remaddr_ops = {
	521	.start = sctp_remaddr_seq_start,
	522	.next = sctp_remaddr_seq_next,
	523	.stop = sctp_remaddr_seq_stop,
	524	.show = sctp_remaddr_seq_show,
	525	};
	526
	527	/* Cleanup the proc fs entry for 'remaddr' object. */
13d782f6	528	void sctp_remaddr_proc_exit(struct net *net)
20c2c1fd	529	{
13d782f6	530	remove_proc_entry("remaddr", net->sctp.proc_net_sctp);
20c2c1fd NH	531	}
	532
	533	static int sctp_remaddr_seq_open(struct inode inode, struct file file)
	534	{
13d782f6 EB	535	return seq_open_net(inode, file, &sctp_remaddr_ops,
13d782f6 EB	536	sizeof(struct seq_net_private));
20c2c1fd NH	537	}
	538
	539	static const struct file_operations sctp_remaddr_seq_fops = {
	540	.open = sctp_remaddr_seq_open,
	541	.read = seq_read,
	542	.llseek = seq_lseek,
0da9a0c2	543	.release = seq_release_net,
20c2c1fd NH	544	};
20c2c1fd NH	545
13d782f6	546	int __net_init sctp_remaddr_proc_init(struct net *net)
20c2c1fd NH	547	{
	548	struct proc_dir_entry *p;
	549
13d782f6 EB	550	p = proc_create("remaddr", S_IRUGO, net->sctp.proc_net_sctp,
13d782f6 EB	551	&sctp_remaddr_seq_fops);
20c2c1fd NH	552	if (!p)
20c2c1fd NH	553	return -ENOMEM;
20c2c1fd NH	554	return 0;
20c2c1fd NH	555	}