[net-next-2.6.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 <net/sctp/sctp.h>
#include <net/ip.h> /* for snmp_fold_field */

static const struct snmp_mib sctp_snmp_list[] = {
	SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
	SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
	SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
	SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
	SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
	SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
	SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
	SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
	SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
	SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
	SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
	SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
	SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
	SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
	SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
	SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
	SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
	SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
	SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
	SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
	SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
	SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
	SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
	SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
	SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
	SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
	SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
	SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
	SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
	SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
	SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
	SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
	SNMP_MIB_SENTINEL
};

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

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

	return 0;
}

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

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

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

	p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
	if (!p)
		return -ENOMEM;

	return 0;
}

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

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

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

	list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
		addr = &laddr->a;
		af = sctp_get_af_specific(addr->sa.sa_family);
		if (primary && af->cmp_addr(addr, primary)) {
			seq_printf(seq, "*");
		}
		af->seq_dump_addr(seq, addr);
	}
}

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

	primary = &assoc->peer.primary_addr;
	list_for_each_entry(transport, &assoc->peer.transport_addr_list,
			transports) {
		addr = &transport->ipaddr;
		af = sctp_get_af_specific(addr->sa.sa_family);
		if (af->cmp_addr(addr, primary)) {
			seq_printf(seq, "*");
		}
		af->seq_dump_addr(seq, addr);
	}
}

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

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

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

	return (void *)pos;
}

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


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

	return pos;
}


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

	if (hash >= sctp_ep_hashsize)
		return -ENOMEM;

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

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

	return 0;
}

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


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

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

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

	p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
	if (!p)
		return -ENOMEM;

	return 0;
}

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


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

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

	if (*pos == 0)
		seq_printf(seq, " ASSOC     SOCK   STY SST ST HBKT "
				"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
				"RPORT LADDRS <-> RADDRS "
				"HBINT INS OUTS MAXRT T1X T2X RTXC\n");

	return (void *)pos;
}

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


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

	return pos;
}

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

	if (hash >= sctp_assoc_hashsize)
		return -ENOMEM;

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

	return 0;
}

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

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

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

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

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

	return 0;
}

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

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

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

	if (*pos == 0)
		seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
				"REM_ADDR_RTX  START\n");

	return (void *)pos;
}

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

	return pos;
}

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

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

	if (hash >= sctp_assoc_hashsize)
		return -ENOMEM;

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

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

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

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

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

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

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

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

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

	return 0;

}

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

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

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

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

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

	p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
	if (!p)
		return -ENOMEM;
	return 0;
}
Commit	Line	Data
60c778b2	1	/* SCTP kernel implementation
1da177e4 LT	2	* Copyright (c) 2003 International Business Machines, Corp.
1da177e4 LT	3	*
60c778b2	4	* This file is part of the SCTP kernel implementation
1da177e4	5	*
60c778b2	6	* This SCTP implementation is free software;
1da177e4 LT	7	* you can redistribute it and/or modify it under the terms of
	8	* the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2, or (at your option)
	10	* any later version.
	11	*
60c778b2	12	* This SCTP implementation is distributed in the hope that it
1da177e4 LT	13	* will be useful, but WITHOUT ANY WARRANTY; without even the implied
	14	* ************************
	15	* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	16	* See the GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with GNU CC; see the file COPYING. If not, write to
	20	* the Free Software Foundation, 59 Temple Place - Suite 330,
	21	* Boston, MA 02111-1307, USA.
	22	*
	23	* Please send any bug reports or fixes you make to the
	24	* email address(es):
	25	* lksctp developers <lksctp-developers@lists.sourceforge.net>
	26	*
	27	* Or submit a bug report through the following website:
	28	* http://www.sf.net/projects/lksctp
	29	*
	30	* Written or modified by:
	31	* Sridhar Samudrala <sri@us.ibm.com>
	32	*
	33	* Any bugs reported given to us we will try to fix... any fixes shared will
	34	* be incorporated into the next SCTP release.
	35	*/
	36
	37	#include <linux/types.h>
	38	#include <linux/seq_file.h>
	39	#include <linux/init.h>
	40	#include <net/sctp/sctp.h>
3f5340a6	41	#include <net/ip.h> /* for snmp_fold_field */
1da177e4	42
5833929c	43	static const struct snmp_mib sctp_snmp_list[] = {
1da177e4 LT	44	SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB),
	45	SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS),
	46	SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS),
	47	SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS),
	48	SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS),
	49	SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES),
	50	SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS),
	51	SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS),
	52	SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS),
	53	SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS),
	54	SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS),
	55	SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS),
	56	SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS),
	57	SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS),
	58	SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS),
	59	SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS),
	60	SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS),
ac0b0462 SS	61	SNMP_MIB_ITEM("SctpT1InitExpireds", SCTP_MIB_T1_INIT_EXPIREDS),
	62	SNMP_MIB_ITEM("SctpT1CookieExpireds", SCTP_MIB_T1_COOKIE_EXPIREDS),
	63	SNMP_MIB_ITEM("SctpT2ShutdownExpireds", SCTP_MIB_T2_SHUTDOWN_EXPIREDS),
	64	SNMP_MIB_ITEM("SctpT3RtxExpireds", SCTP_MIB_T3_RTX_EXPIREDS),
	65	SNMP_MIB_ITEM("SctpT4RtoExpireds", SCTP_MIB_T4_RTO_EXPIREDS),
	66	SNMP_MIB_ITEM("SctpT5ShutdownGuardExpireds", SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS),
	67	SNMP_MIB_ITEM("SctpDelaySackExpireds", SCTP_MIB_DELAY_SACK_EXPIREDS),
	68	SNMP_MIB_ITEM("SctpAutocloseExpireds", SCTP_MIB_AUTOCLOSE_EXPIREDS),
	69	SNMP_MIB_ITEM("SctpT3Retransmits", SCTP_MIB_T3_RETRANSMITS),
	70	SNMP_MIB_ITEM("SctpPmtudRetransmits", SCTP_MIB_PMTUD_RETRANSMITS),
	71	SNMP_MIB_ITEM("SctpFastRetransmits", SCTP_MIB_FAST_RETRANSMITS),
	72	SNMP_MIB_ITEM("SctpInPktSoftirq", SCTP_MIB_IN_PKT_SOFTIRQ),
	73	SNMP_MIB_ITEM("SctpInPktBacklog", SCTP_MIB_IN_PKT_BACKLOG),
	74	SNMP_MIB_ITEM("SctpInPktDiscards", SCTP_MIB_IN_PKT_DISCARDS),
	75	SNMP_MIB_ITEM("SctpInDataChunkDiscards", SCTP_MIB_IN_DATA_CHUNK_DISCARDS),
d2287f84	76	SNMP_MIB_SENTINEL
1da177e4 LT	77	};
1da177e4 LT	78
1da177e4 LT	79	/* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */
	80	static int sctp_snmp_seq_show(struct seq_file seq, void v)
	81	{
	82	int i;
	83
	84	for (i = 0; sctp_snmp_list[i].name != NULL; i++)
	85	seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
7d720c3e	86	snmp_fold_field((void __percpu **)sctp_statistics,
1da177e4 LT	87	sctp_snmp_list[i].entry));
	88
	89	return 0;
	90	}
	91
	92	/* Initialize the seq file operations for 'snmp' object. */
	93	static int sctp_snmp_seq_open(struct inode inode, struct file file)
	94	{
	95	return single_open(file, sctp_snmp_seq_show, NULL);
	96	}
	97
da7071d7	98	static const struct file_operations sctp_snmp_seq_fops = {
1da177e4 LT	99	.owner = THIS_MODULE,
	100	.open = sctp_snmp_seq_open,
	101	.read = seq_read,
	102	.llseek = seq_lseek,
	103	.release = single_release,
	104	};
	105
	106	/* Set up the proc fs entry for 'snmp' object. */
	107	int __init sctp_snmp_proc_init(void)
	108	{
	109	struct proc_dir_entry *p;
	110
160f17e3	111	p = proc_create("snmp", S_IRUGO, proc_net_sctp, &sctp_snmp_seq_fops);
1da177e4 LT	112	if (!p)
	113	return -ENOMEM;
	114
1da177e4 LT	115	return 0;
	116	}
	117
	118	/* Cleanup the proc fs entry for 'snmp' object. */
	119	void sctp_snmp_proc_exit(void)
	120	{
	121	remove_proc_entry("snmp", proc_net_sctp);
	122	}
	123
	124	/* Dump local addresses of an association/endpoint. */
	125	static void sctp_seq_dump_local_addrs(struct seq_file seq, struct sctp_ep_common epb)
	126	{
bca735bd	127	struct sctp_association *asoc;
1da177e4	128	struct sctp_sockaddr_entry *laddr;
bca735bd VY	129	struct sctp_transport *peer;
bca735bd VY	130	union sctp_addr addr, primary = NULL;
1da177e4 LT	131	struct sctp_af *af;
1da177e4 LT	132
bca735bd VY	133	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
	134	asoc = sctp_assoc(epb);
	135	peer = asoc->peer.primary_path;
5f242a13	136	primary = &peer->saddr;
bca735bd VY	137	}
bca735bd VY	138
9dbc15f0	139	list_for_each_entry(laddr, &epb->bind_addr.address_list, list) {
5f242a13	140	addr = &laddr->a;
1da177e4	141	af = sctp_get_af_specific(addr->sa.sa_family);
bca735bd VY	142	if (primary && af->cmp_addr(addr, primary)) {
	143	seq_printf(seq, "*");
	144	}
5f242a13	145	af->seq_dump_addr(seq, addr);
1da177e4 LT	146	}
	147	}
	148
	149	/* Dump remote addresses of an association. */
	150	static void sctp_seq_dump_remote_addrs(struct seq_file seq, struct sctp_association assoc)
	151	{
1da177e4	152	struct sctp_transport *transport;
bca735bd	153	union sctp_addr addr, primary;
1da177e4 LT	154	struct sctp_af *af;
1da177e4 LT	155
acd2bc96	156	primary = &assoc->peer.primary_addr;
9dbc15f0 RD	157	list_for_each_entry(transport, &assoc->peer.transport_addr_list,
9dbc15f0 RD	158	transports) {
5f242a13	159	addr = &transport->ipaddr;
1da177e4	160	af = sctp_get_af_specific(addr->sa.sa_family);
acd2bc96	161	if (af->cmp_addr(addr, primary)) {
bca735bd VY	162	seq_printf(seq, "*");
bca735bd VY	163	}
5f242a13	164	af->seq_dump_addr(seq, addr);
1da177e4 LT	165	}
	166	}
	167
bca735bd VY	168	static void * sctp_eps_seq_start(struct seq_file seq, loff_t pos)
bca735bd VY	169	{
49392e5e	170	if (*pos >= sctp_ep_hashsize)
bca735bd VY	171	return NULL;
	172
	173	if (*pos < 0)
	174	*pos = 0;
	175
	176	if (*pos == 0)
	177	seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
	178
bca735bd VY	179	return (void *)pos;
	180	}
	181
	182	static void sctp_eps_seq_stop(struct seq_file seq, void v)
	183	{
bca735bd VY	184	}
	185
	186
	187	static void * sctp_eps_seq_next(struct seq_file seq, void v, loff_t *pos)
	188	{
49392e5e	189	if (++*pos >= sctp_ep_hashsize)
bca735bd VY	190	return NULL;
bca735bd VY	191
bca735bd VY	192	return pos;
	193	}
	194
	195
1da177e4 LT	196	/* Display sctp endpoints (/proc/net/sctp/eps). */
	197	static int sctp_eps_seq_show(struct seq_file seq, void v)
	198	{
	199	struct sctp_hashbucket *head;
	200	struct sctp_ep_common *epb;
	201	struct sctp_endpoint *ep;
	202	struct sock *sk;
d970dbf8	203	struct hlist_node *node;
38b0e42a	204	int hash = (loff_t )v;
bca735bd	205
49392e5e	206	if (hash >= sctp_ep_hashsize)
bca735bd VY	207	return -ENOMEM;
bca735bd VY	208
49392e5e	209	head = &sctp_ep_hashtable[hash];
bca735bd VY	210	sctp_local_bh_disable();
bca735bd VY	211	read_lock(&head->lock);
d970dbf8	212	sctp_for_each_hentry(epb, node, &head->chain) {
bca735bd VY	213	ep = sctp_ep(epb);
	214	sk = epb->sk;
	215	seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
49392e5e	216	sctp_sk(sk)->type, sk->sk_state, hash,
bca735bd VY	217	epb->bind_addr.port,
	218	sock_i_uid(sk), sock_i_ino(sk));
	219
	220	sctp_seq_dump_local_addrs(seq, epb);
	221	seq_printf(seq, "\n");
1da177e4	222	}
bca735bd VY	223	read_unlock(&head->lock);
bca735bd VY	224	sctp_local_bh_enable();
1da177e4 LT	225
	226	return 0;
	227	}
	228
56b3d975	229	static const struct seq_operations sctp_eps_ops = {
bca735bd VY	230	.start = sctp_eps_seq_start,
	231	.next = sctp_eps_seq_next,
	232	.stop = sctp_eps_seq_stop,
	233	.show = sctp_eps_seq_show,
	234	};
	235
	236
1da177e4 LT	237	/* Initialize the seq file operations for 'eps' object. */
	238	static int sctp_eps_seq_open(struct inode inode, struct file file)
	239	{
bca735bd	240	return seq_open(file, &sctp_eps_ops);
1da177e4 LT	241	}
1da177e4 LT	242
da7071d7	243	static const struct file_operations sctp_eps_seq_fops = {
1da177e4 LT	244	.open = sctp_eps_seq_open,
	245	.read = seq_read,
	246	.llseek = seq_lseek,
bca735bd	247	.release = seq_release,
1da177e4 LT	248	};
	249
	250	/* Set up the proc fs entry for 'eps' object. */
	251	int __init sctp_eps_proc_init(void)
	252	{
	253	struct proc_dir_entry *p;
	254
459eea74	255	p = proc_create("eps", S_IRUGO, proc_net_sctp, &sctp_eps_seq_fops);
1da177e4 LT	256	if (!p)
	257	return -ENOMEM;
	258
1da177e4 LT	259	return 0;
	260	}
	261
	262	/* Cleanup the proc fs entry for 'eps' object. */
	263	void sctp_eps_proc_exit(void)
	264	{
	265	remove_proc_entry("eps", proc_net_sctp);
	266	}
	267
bca735bd VY	268
	269	static void * sctp_assocs_seq_start(struct seq_file seq, loff_t pos)
	270	{
49392e5e	271	if (*pos >= sctp_assoc_hashsize)
bca735bd VY	272	return NULL;
	273
	274	if (*pos < 0)
	275	*pos = 0;
	276
	277	if (*pos == 0)
58fbbed4 NH	278	seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
	279	"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
	280	"RPORT LADDRS <-> RADDRS "
	281	"HBINT INS OUTS MAXRT T1X T2X RTXC\n");
bca735bd	282
bca735bd VY	283	return (void *)pos;
	284	}
	285
	286	static void sctp_assocs_seq_stop(struct seq_file seq, void v)
	287	{
bca735bd VY	288	}
	289
	290
	291	static void * sctp_assocs_seq_next(struct seq_file seq, void v, loff_t *pos)
	292	{
49392e5e	293	if (++*pos >= sctp_assoc_hashsize)
bca735bd VY	294	return NULL;
bca735bd VY	295
bca735bd VY	296	return pos;
	297	}
	298
1da177e4 LT	299	/* Display sctp associations (/proc/net/sctp/assocs). */
	300	static int sctp_assocs_seq_show(struct seq_file seq, void v)
	301	{
	302	struct sctp_hashbucket *head;
	303	struct sctp_ep_common *epb;
	304	struct sctp_association *assoc;
	305	struct sock *sk;
d970dbf8	306	struct hlist_node *node;
38b0e42a	307	int hash = (loff_t )v;
bca735bd	308
49392e5e	309	if (hash >= sctp_assoc_hashsize)
bca735bd VY	310	return -ENOMEM;
bca735bd VY	311
49392e5e	312	head = &sctp_assoc_hashtable[hash];
bca735bd VY	313	sctp_local_bh_disable();
bca735bd VY	314	read_lock(&head->lock);
d970dbf8	315	sctp_for_each_hentry(epb, node, &head->chain) {
bca735bd VY	316	assoc = sctp_assoc(epb);
	317	sk = epb->sk;
	318	seq_printf(seq,
58fbbed4	319	"%8p %8p %-3d %-3d %-2d %-4d "
30e93560	320	"%4d %8d %8d %7d %5lu %-5d %5d ",
bca735bd	321	assoc, sk, sctp_sk(sk)->type, sk->sk_state,
58fbbed4 NH	322	assoc->state, hash,
58fbbed4 NH	323	assoc->assoc_id,
bca735bd	324	assoc->sndbuf_used,
6aa2551c	325	atomic_read(&assoc->rmem_alloc),
bca735bd VY	326	sock_i_uid(sk), sock_i_ino(sk),
bca735bd VY	327	epb->bind_addr.port,
30e93560	328	assoc->peer.port);
bca735bd VY	329	seq_printf(seq, " ");
	330	sctp_seq_dump_local_addrs(seq, epb);
	331	seq_printf(seq, "<-> ");
	332	sctp_seq_dump_remote_addrs(seq, assoc);
30e93560 NH	333	seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d ",
	334	assoc->hbinterval, assoc->c.sinit_max_instreams,
	335	assoc->c.sinit_num_ostreams, assoc->max_retrans,
	336	assoc->init_retries, assoc->shutdown_retries,
	337	assoc->rtx_data_chunks);
bca735bd	338	seq_printf(seq, "\n");
1da177e4	339	}
bca735bd VY	340	read_unlock(&head->lock);
bca735bd VY	341	sctp_local_bh_enable();
1da177e4 LT	342
	343	return 0;
	344	}
	345
56b3d975	346	static const struct seq_operations sctp_assoc_ops = {
bca735bd VY	347	.start = sctp_assocs_seq_start,
	348	.next = sctp_assocs_seq_next,
	349	.stop = sctp_assocs_seq_stop,
	350	.show = sctp_assocs_seq_show,
	351	};
	352
1da177e4 LT	353	/* Initialize the seq file operations for 'assocs' object. */
	354	static int sctp_assocs_seq_open(struct inode inode, struct file file)
	355	{
bca735bd	356	return seq_open(file, &sctp_assoc_ops);
1da177e4 LT	357	}
1da177e4 LT	358
da7071d7	359	static const struct file_operations sctp_assocs_seq_fops = {
1da177e4 LT	360	.open = sctp_assocs_seq_open,
	361	.read = seq_read,
	362	.llseek = seq_lseek,
bca735bd	363	.release = seq_release,
1da177e4 LT	364	};
	365
	366	/* Set up the proc fs entry for 'assocs' object. */
	367	int __init sctp_assocs_proc_init(void)
	368	{
	369	struct proc_dir_entry *p;
	370
459eea74 PE	371	p = proc_create("assocs", S_IRUGO, proc_net_sctp,
459eea74 PE	372	&sctp_assocs_seq_fops);
1da177e4 LT	373	if (!p)
	374	return -ENOMEM;
	375
1da177e4 LT	376	return 0;
	377	}
	378
	379	/* Cleanup the proc fs entry for 'assocs' object. */
	380	void sctp_assocs_proc_exit(void)
	381	{
	382	remove_proc_entry("assocs", proc_net_sctp);
	383	}
20c2c1fd NH	384
	385	static void sctp_remaddr_seq_start(struct seq_file seq, loff_t *pos)
	386	{
	387	if (*pos >= sctp_assoc_hashsize)
	388	return NULL;
	389
	390	if (*pos < 0)
	391	*pos = 0;
	392
	393	if (*pos == 0)
	394	seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
	395	"REM_ADDR_RTX START\n");
	396
	397	return (void *)pos;
	398	}
	399
	400	static void sctp_remaddr_seq_next(struct seq_file seq, void v, loff_t pos)
	401	{
	402	if (++*pos >= sctp_assoc_hashsize)
	403	return NULL;
	404
	405	return pos;
	406	}
	407
	408	static void sctp_remaddr_seq_stop(struct seq_file seq, void v)
	409	{
20c2c1fd NH	410	}
	411
	412	static int sctp_remaddr_seq_show(struct seq_file seq, void v)
	413	{
	414	struct sctp_hashbucket *head;
	415	struct sctp_ep_common *epb;
	416	struct sctp_association *assoc;
	417	struct hlist_node *node;
	418	struct sctp_transport *tsp;
	419	int hash = (loff_t )v;
	420
	421	if (hash >= sctp_assoc_hashsize)
	422	return -ENOMEM;
	423
	424	head = &sctp_assoc_hashtable[hash];
	425	sctp_local_bh_disable();
	426	read_lock(&head->lock);
	427	sctp_for_each_hentry(epb, node, &head->chain) {
	428	assoc = sctp_assoc(epb);
	429	list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
	430	transports) {
	431	/*
	432	* The remote address (ADDR)
	433	*/
	434	tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
	435	seq_printf(seq, " ");
	436
	437	/*
	438	* The association ID (ASSOC_ID)
	439	*/
	440	seq_printf(seq, "%d ", tsp->asoc->assoc_id);
	441
	442	/*
	443	* If the Heartbeat is active (HB_ACT)
	444	* Note: 1 = Active, 0 = Inactive
	445	*/
	446	seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
	447
	448	/*
	449	* Retransmit time out (RTO)
	450	*/
	451	seq_printf(seq, "%lu ", tsp->rto);
	452
	453	/*
	454	* Maximum path retransmit count (PATH_MAX_RTX)
	455	*/
	456	seq_printf(seq, "%d ", tsp->pathmaxrxt);
	457
	458	/*
	459	* remote address retransmit count (REM_ADDR_RTX)
	460	* Note: We don't have a way to tally this at the moment
	461	* so lets just leave it as zero for the moment
	462	*/
	463	seq_printf(seq, "0 ");
	464
	465	/*
	466	* remote address start time (START). This is also not
	467	* currently implemented, but we can record it with a
	468	* jiffies marker in a subsequent patch
	469	*/
	470	seq_printf(seq, "0");
	471
	472	seq_printf(seq, "\n");
	473	}
474	}
475
476	read_unlock(&head->lock);
477	sctp_local_bh_enable();
478
479	return 0;
480
481	}
482
483	static const struct seq_operations sctp_remaddr_ops = {
484	.start = sctp_remaddr_seq_start,
485	.next = sctp_remaddr_seq_next,
486	.stop = sctp_remaddr_seq_stop,
487	.show = sctp_remaddr_seq_show,
488	};
489
490	/* Cleanup the proc fs entry for 'remaddr' object. */
491	void sctp_remaddr_proc_exit(void)
492	{
493	remove_proc_entry("remaddr", proc_net_sctp);
494	}
495
496	static int sctp_remaddr_seq_open(struct inode inode, struct file file)
497	{
498	return seq_open(file, &sctp_remaddr_ops);
499	}
500
501	static const struct file_operations sctp_remaddr_seq_fops = {
502	.open = sctp_remaddr_seq_open,
503	.read = seq_read,
504	.llseek = seq_lseek,
505	.release = seq_release,
506	};
507
508	int __init sctp_remaddr_proc_init(void)
509	{
510	struct proc_dir_entry *p;
511
d71a09ed	512	p = proc_create("remaddr", S_IRUGO, proc_net_sctp, &sctp_remaddr_seq_fops);
20c2c1fd NH	513	if (!p)
20c2c1fd NH	514	return -ENOMEM;
20c2c1fd NH	515	return 0;
20c2c1fd NH	516	}