[linux-2.6-block.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)
{
	unsigned long buff[SCTP_MIB_MAX];
	struct net *net = seq->private;
	int i;

	memset(buff, 0, sizeof(unsigned long) * SCTP_MIB_MAX);

	snmp_get_cpu_field_batch(buff, sctp_snmp_list,
				 net->sctp.sctp_statistics);
	for (i = 0; sctp_snmp_list[i].name; i++)
		seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
						buff[i]);

	return 0;
}

/* 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;
	list_for_each_entry_rcu(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;
	int    hash = *(loff_t *)v;

	if (hash >= sctp_ep_hashsize)
		return -ENOMEM;

	head = &sctp_ep_hashtable[hash];
	read_lock_bh(&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_bh(&head->lock);

	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,
};

struct sctp_ht_iter {
	struct seq_net_private p;
	struct rhashtable_iter hti;
};

static void *sctp_transport_seq_start(struct seq_file *seq, loff_t *pos)
{
	struct sctp_ht_iter *iter = seq->private;

	sctp_transport_walk_start(&iter->hti);

	return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos);
}

static void sctp_transport_seq_stop(struct seq_file *seq, void *v)
{
	struct sctp_ht_iter *iter = seq->private;

	sctp_transport_walk_stop(&iter->hti);
}

static void *sctp_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct sctp_ht_iter *iter = seq->private;

	++*pos;

	return sctp_transport_get_next(seq_file_net(seq), &iter->hti);
}

/* Display sctp associations (/proc/net/sctp/assocs). */
static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
{
	struct sctp_transport *transport;
	struct sctp_association *assoc;
	struct sctp_ep_common *epb;
	struct sock *sk;

	if (v == SEQ_START_TOKEN) {
		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 0;
	}

	transport = (struct sctp_transport *)v;
	assoc = transport->asoc;
	epb = &assoc->base;
	sk = epb->sk;

	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, 0,
		   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->stream.incnt,
		assoc->stream.outcnt, assoc->max_retrans,
		assoc->init_retries, assoc->shutdown_retries,
		assoc->rtx_data_chunks,
		refcount_read(&sk->sk_wmem_alloc),
		sk->sk_wmem_queued,
		sk->sk_sndbuf,
		sk->sk_rcvbuf);
	seq_printf(seq, "\n");

	sctp_transport_put(transport);

	return 0;
}

static const struct seq_operations sctp_assoc_ops = {
	.start = sctp_transport_seq_start,
	.next  = sctp_transport_seq_next,
	.stop  = sctp_transport_seq_stop,
	.show  = sctp_assocs_seq_show,
};

static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
{
	struct sctp_association *assoc;
	struct sctp_transport *transport, *tsp;

	if (v == SEQ_START_TOKEN) {
		seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
				"REM_ADDR_RTX START STATE\n");
		return 0;
	}

	transport = (struct sctp_transport *)v;
	assoc = transport->asoc;

	list_for_each_entry_rcu(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_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");
	}

	sctp_transport_put(transport);

	return 0;
}

static const struct seq_operations sctp_remaddr_ops = {
	.start = sctp_transport_seq_start,
	.next  = sctp_transport_seq_next,
	.stop  = sctp_transport_seq_stop,
	.show  = sctp_remaddr_seq_show,
};

/* Set up the proc fs entry for the SCTP protocol. */
int __net_init sctp_proc_init(struct net *net)
{
	net->sctp.proc_net_sctp = proc_net_mkdir(net, "sctp", net->proc_net);
	if (!net->sctp.proc_net_sctp)
		return -ENOMEM;
	if (!proc_create_net_single("snmp", 0444, net->sctp.proc_net_sctp,
			 sctp_snmp_seq_show, NULL))
		goto cleanup;
	if (!proc_create_net("eps", 0444, net->sctp.proc_net_sctp,
			&sctp_eps_ops, sizeof(struct seq_net_private)))
		goto cleanup;
	if (!proc_create_net("assocs", 0444, net->sctp.proc_net_sctp,
			&sctp_assoc_ops, sizeof(struct sctp_ht_iter)))
		goto cleanup;
	if (!proc_create_net("remaddr", 0444, net->sctp.proc_net_sctp,
			&sctp_remaddr_ops, sizeof(struct sctp_ht_iter)))
		goto cleanup;
	return 0;

cleanup:
	remove_proc_subtree("sctp", net->proc_net);
	net->sctp.proc_net_sctp = NULL;
	return -ENOMEM;
}
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	{
7d64a94b	76	unsigned long buff[SCTP_MIB_MAX];
13d782f6	77	struct net *net = seq->private;
1da177e4 LT	78	int i;
1da177e4 LT	79
7d64a94b JH	80	memset(buff, 0, sizeof(unsigned long) * SCTP_MIB_MAX);
	81
	82	snmp_get_cpu_field_batch(buff, sctp_snmp_list,
	83	net->sctp.sctp_statistics);
6d4a741c	84	for (i = 0; sctp_snmp_list[i].name; i++)
1da177e4	85	seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
7d64a94b	86	buff[i]);
1da177e4 LT	87
	88	return 0;
	89	}
	90
1da177e4 LT	91	/* Dump local addresses of an association/endpoint. */
	92	static void sctp_seq_dump_local_addrs(struct seq_file seq, struct sctp_ep_common epb)
	93	{
bca735bd	94	struct sctp_association *asoc;
1da177e4	95	struct sctp_sockaddr_entry *laddr;
bca735bd VY	96	struct sctp_transport *peer;
bca735bd VY	97	union sctp_addr addr, primary = NULL;
1da177e4 LT	98	struct sctp_af *af;
1da177e4 LT	99
bca735bd	100	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
f9e42b85 DB	101	asoc = sctp_assoc(epb);
	102
	103	peer = asoc->peer.primary_path;
	104	if (unlikely(peer == NULL)) {
b527fe69	105	WARN(1, "Association %p with NULL primary path!\n", asoc);
f9e42b85 DB	106	return;
	107	}
	108
	109	primary = &peer->saddr;
bca735bd VY	110	}
bca735bd VY	111
0b0fe913 TG	112	rcu_read_lock();
	113	list_for_each_entry_rcu(laddr, &epb->bind_addr.address_list, list) {
	114	if (!laddr->valid)
	115	continue;
	116
5f242a13	117	addr = &laddr->a;
1da177e4	118	af = sctp_get_af_specific(addr->sa.sa_family);
bca735bd VY	119	if (primary && af->cmp_addr(addr, primary)) {
	120	seq_printf(seq, "*");
	121	}
5f242a13	122	af->seq_dump_addr(seq, addr);
1da177e4	123	}
0b0fe913	124	rcu_read_unlock();
1da177e4 LT	125	}
	126
	127	/* Dump remote addresses of an association. */
	128	static void sctp_seq_dump_remote_addrs(struct seq_file seq, struct sctp_association assoc)
	129	{
1da177e4	130	struct sctp_transport *transport;
bca735bd	131	union sctp_addr addr, primary;
1da177e4 LT	132	struct sctp_af *af;
1da177e4 LT	133
acd2bc96	134	primary = &assoc->peer.primary_addr;
45122ca2	135	list_for_each_entry_rcu(transport, &assoc->peer.transport_addr_list,
9dbc15f0	136	transports) {
5f242a13	137	addr = &transport->ipaddr;
45122ca2	138
1da177e4	139	af = sctp_get_af_specific(addr->sa.sa_family);
acd2bc96	140	if (af->cmp_addr(addr, primary)) {
bca735bd VY	141	seq_printf(seq, "*");
bca735bd VY	142	}
5f242a13	143	af->seq_dump_addr(seq, addr);
1da177e4 LT	144	}
	145	}
	146
26ac8e5f	147	static void sctp_eps_seq_start(struct seq_file seq, loff_t *pos)
bca735bd	148	{
49392e5e	149	if (*pos >= sctp_ep_hashsize)
bca735bd VY	150	return NULL;
	151
	152	if (*pos < 0)
	153	*pos = 0;
	154
	155	if (*pos == 0)
	156	seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
	157
bca735bd VY	158	return (void *)pos;
	159	}
	160
	161	static void sctp_eps_seq_stop(struct seq_file seq, void v)
	162	{
bca735bd VY	163	}
	164
	165
26ac8e5f	166	static void sctp_eps_seq_next(struct seq_file seq, void v, loff_t pos)
bca735bd	167	{
49392e5e	168	if (++*pos >= sctp_ep_hashsize)
bca735bd VY	169	return NULL;
bca735bd VY	170
bca735bd VY	171	return pos;
	172	}
	173
	174
1da177e4 LT	175	/* Display sctp endpoints (/proc/net/sctp/eps). */
	176	static int sctp_eps_seq_show(struct seq_file seq, void v)
	177	{
	178	struct sctp_hashbucket *head;
	179	struct sctp_ep_common *epb;
	180	struct sctp_endpoint *ep;
	181	struct sock *sk;
38b0e42a	182	int hash = (loff_t )v;
bca735bd	183
49392e5e	184	if (hash >= sctp_ep_hashsize)
bca735bd VY	185	return -ENOMEM;
bca735bd VY	186
49392e5e	187	head = &sctp_ep_hashtable[hash];
c0a4c2d1	188	read_lock_bh(&head->lock);
b67bfe0d	189	sctp_for_each_hentry(epb, &head->chain) {
bca735bd VY	190	ep = sctp_ep(epb);
bca735bd VY	191	sk = epb->sk;
6932f119	192	if (!net_eq(sock_net(sk), seq_file_net(seq)))
13d782f6	193	continue;
d14c5ab6	194	seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5u %5lu ", ep, sk,
49392e5e	195	sctp_sk(sk)->type, sk->sk_state, hash,
bca735bd	196	epb->bind_addr.port,
a7cb5a49 EB	197	from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
a7cb5a49 EB	198	sock_i_ino(sk));
bca735bd VY	199
	200	sctp_seq_dump_local_addrs(seq, epb);
	201	seq_printf(seq, "\n");
1da177e4	202	}
c0a4c2d1	203	read_unlock_bh(&head->lock);
1da177e4 LT	204
	205	return 0;
	206	}
	207
56b3d975	208	static const struct seq_operations sctp_eps_ops = {
bca735bd VY	209	.start = sctp_eps_seq_start,
	210	.next = sctp_eps_seq_next,
	211	.stop = sctp_eps_seq_stop,
	212	.show = sctp_eps_seq_show,
	213	};
	214
39f66a7d XL	215	struct sctp_ht_iter {
	216	struct seq_net_private p;
	217	struct rhashtable_iter hti;
	218	};
bca735bd	219
b5e2f4e6	220	static void sctp_transport_seq_start(struct seq_file seq, loff_t *pos)
39f66a7d	221	{
626d16f5	222	struct sctp_ht_iter *iter = seq->private;
39f66a7d	223
97a6ec4a	224	sctp_transport_walk_start(&iter->hti);
39f66a7d	225
626d16f5	226	return sctp_transport_get_idx(seq_file_net(seq), &iter->hti, *pos);
39f66a7d XL	227	}
39f66a7d XL	228
b5e2f4e6	229	static void sctp_transport_seq_stop(struct seq_file seq, void v)
39f66a7d	230	{
626d16f5 XL	231	struct sctp_ht_iter *iter = seq->private;
	232
	233	sctp_transport_walk_stop(&iter->hti);
39f66a7d	234	}
bca735bd	235
b5e2f4e6	236	static void sctp_transport_seq_next(struct seq_file seq, void v, loff_t pos)
bca735bd	237	{
626d16f5 XL	238	struct sctp_ht_iter *iter = seq->private;
626d16f5 XL	239
39f66a7d	240	++*pos;
bca735bd	241
626d16f5	242	return sctp_transport_get_next(seq_file_net(seq), &iter->hti);
bca735bd VY	243	}
bca735bd VY	244
1da177e4 LT	245	/* Display sctp associations (/proc/net/sctp/assocs). */
	246	static int sctp_assocs_seq_show(struct seq_file seq, void v)
	247	{
39f66a7d	248	struct sctp_transport *transport;
1da177e4	249	struct sctp_association *assoc;
39f66a7d	250	struct sctp_ep_common *epb;
1da177e4	251	struct sock *sk;
bca735bd	252
39f66a7d XL	253	if (v == SEQ_START_TOKEN) {
	254	seq_printf(seq, " ASSOC SOCK STY SST ST HBKT "
	255	"ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
	256	"RPORT LADDRS <-> RADDRS "
	257	"HBINT INS OUTS MAXRT T1X T2X RTXC "
	258	"wmema wmemq sndbuf rcvbuf\n");
	259	return 0;
1da177e4	260	}
39f66a7d XL	261
	262	transport = (struct sctp_transport *)v;
	263	assoc = transport->asoc;
	264	epb = &assoc->base;
	265	sk = epb->sk;
	266
	267	seq_printf(seq,
	268	"%8pK %8pK %-3d %-3d %-2d %-4d "
	269	"%4d %8d %8d %7u %5lu %-5d %5d ",
	270	assoc, sk, sctp_sk(sk)->type, sk->sk_state,
	271	assoc->state, 0,
	272	assoc->assoc_id,
	273	assoc->sndbuf_used,
	274	atomic_read(&assoc->rmem_alloc),
	275	from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
	276	sock_i_ino(sk),
	277	epb->bind_addr.port,
	278	assoc->peer.port);
	279	seq_printf(seq, " ");
	280	sctp_seq_dump_local_addrs(seq, epb);
	281	seq_printf(seq, "<-> ");
	282	sctp_seq_dump_remote_addrs(seq, assoc);
	283	seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
	284	"%8d %8d %8d %8d",
cee360ab XL	285	assoc->hbinterval, assoc->stream.incnt,
cee360ab XL	286	assoc->stream.outcnt, assoc->max_retrans,
39f66a7d XL	287	assoc->init_retries, assoc->shutdown_retries,
39f66a7d XL	288	assoc->rtx_data_chunks,
14afee4b	289	refcount_read(&sk->sk_wmem_alloc),
39f66a7d XL	290	sk->sk_wmem_queued,
	291	sk->sk_sndbuf,
	292	sk->sk_rcvbuf);
	293	seq_printf(seq, "\n");
1da177e4	294
fba4c330 XL	295	sctp_transport_put(transport);
fba4c330 XL	296
1da177e4 LT	297	return 0;
	298	}
	299
56b3d975	300	static const struct seq_operations sctp_assoc_ops = {
b5e2f4e6 XL	301	.start = sctp_transport_seq_start,
	302	.next = sctp_transport_seq_next,
	303	.stop = sctp_transport_seq_stop,
bca735bd VY	304	.show = sctp_assocs_seq_show,
	305	};
	306
20c2c1fd NH	307	static int sctp_remaddr_seq_show(struct seq_file seq, void v)
20c2c1fd NH	308	{
20c2c1fd	309	struct sctp_association *assoc;
3d73e8fa	310	struct sctp_transport transport, tsp;
20c2c1fd	311
39f66a7d XL	312	if (v == SEQ_START_TOKEN) {
	313	seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
	314	"REM_ADDR_RTX START STATE\n");
	315	return 0;
	316	}
20c2c1fd	317
3d73e8fa	318	transport = (struct sctp_transport *)v;
3d73e8fa	319	assoc = transport->asoc;
39f66a7d XL	320
	321	list_for_each_entry_rcu(tsp, &assoc->peer.transport_addr_list,
	322	transports) {
39f66a7d XL	323	/*
	324	* The remote address (ADDR)
	325	*/
	326	tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
	327	seq_printf(seq, " ");
	328	/*
	329	* The association ID (ASSOC_ID)
	330	*/
	331	seq_printf(seq, "%d ", tsp->asoc->assoc_id);
	332
	333	/*
	334	* If the Heartbeat is active (HB_ACT)
	335	* Note: 1 = Active, 0 = Inactive
	336	*/
	337	seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
	338
	339	/*
	340	* Retransmit time out (RTO)
	341	*/
	342	seq_printf(seq, "%lu ", tsp->rto);
	343
	344	/*
	345	* Maximum path retransmit count (PATH_MAX_RTX)
	346	*/
	347	seq_printf(seq, "%d ", tsp->pathmaxrxt);
	348
	349	/*
	350	* remote address retransmit count (REM_ADDR_RTX)
	351	* Note: We don't have a way to tally this at the moment
	352	* so lets just leave it as zero for the moment
	353	*/
	354	seq_puts(seq, "0 ");
	355
	356	/*
	357	* remote address start time (START). This is also not
	358	* currently implemented, but we can record it with a
	359	* jiffies marker in a subsequent patch
	360	*/
	361	seq_puts(seq, "0 ");
	362
	363	/*
	364	* The current state of this destination. I.e.
	365	* SCTP_ACTIVE, SCTP_INACTIVE, ...
	366	*/
	367	seq_printf(seq, "%d", tsp->state);
45122ca2	368
39f66a7d	369	seq_printf(seq, "\n");
20c2c1fd NH	370	}
20c2c1fd NH	371
3d73e8fa	372	sctp_transport_put(transport);
fba4c330	373
20c2c1fd	374	return 0;
20c2c1fd NH	375	}
	376
	377	static const struct seq_operations sctp_remaddr_ops = {
b5e2f4e6 XL	378	.start = sctp_transport_seq_start,
	379	.next = sctp_transport_seq_next,
	380	.stop = sctp_transport_seq_stop,
20c2c1fd NH	381	.show = sctp_remaddr_seq_show,
	382	};
	383
d47d08c8 AV	384	/* Set up the proc fs entry for the SCTP protocol. */
d47d08c8 AV	385	int __net_init sctp_proc_init(struct net *net)
20c2c1fd	386	{
d47d08c8 AV	387	net->sctp.proc_net_sctp = proc_net_mkdir(net, "sctp", net->proc_net);
d47d08c8 AV	388	if (!net->sctp.proc_net_sctp)
20c2c1fd	389	return -ENOMEM;
3617d949 CH	390	if (!proc_create_net_single("snmp", 0444, net->sctp.proc_net_sctp,
3617d949 CH	391	sctp_snmp_seq_show, NULL))
d47d08c8	392	goto cleanup;
c3506372 CH	393	if (!proc_create_net("eps", 0444, net->sctp.proc_net_sctp,
c3506372 CH	394	&sctp_eps_ops, sizeof(struct seq_net_private)))
d47d08c8	395	goto cleanup;
c3506372 CH	396	if (!proc_create_net("assocs", 0444, net->sctp.proc_net_sctp,
c3506372 CH	397	&sctp_assoc_ops, sizeof(struct sctp_ht_iter)))
d47d08c8	398	goto cleanup;
c3506372 CH	399	if (!proc_create_net("remaddr", 0444, net->sctp.proc_net_sctp,
c3506372 CH	400	&sctp_remaddr_ops, sizeof(struct sctp_ht_iter)))
d47d08c8	401	goto cleanup;
20c2c1fd	402	return 0;
d47d08c8 AV	403
	404	cleanup:
	405	remove_proc_subtree("sctp", net->proc_net);
	406	net->sctp.proc_net_sctp = NULL;
	407	return -ENOMEM;
20c2c1fd	408	}