[net-next-2.6.git] / fs / ocfs2 / cluster / netdebug.c

/* -*- mode: c; c-basic-offset: 8; -*-
 * vim: noexpandtab sw=8 ts=8 sts=0:
 *
 * netdebug.c
 *
 * debug functionality for o2net
 *
 * Copyright (C) 2005, 2008 Oracle.  All rights reserved.
 *
 * This program 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 of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 021110-1307, USA.
 *
 */

#ifdef CONFIG_DEBUG_FS

#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/idr.h>
#include <linux/kref.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>

#include <linux/uaccess.h>

#include "tcp.h"
#include "nodemanager.h"
#define MLOG_MASK_PREFIX ML_TCP
#include "masklog.h"

#include "tcp_internal.h"

#define O2NET_DEBUG_DIR		"o2net"
#define SC_DEBUG_NAME		"sock_containers"
#define NST_DEBUG_NAME		"send_tracking"

static struct dentry *o2net_dentry;
static struct dentry *sc_dentry;
static struct dentry *nst_dentry;

static DEFINE_SPINLOCK(o2net_debug_lock);

static LIST_HEAD(sock_containers);
static LIST_HEAD(send_tracking);

void o2net_debug_add_nst(struct o2net_send_tracking *nst)
{
	spin_lock(&o2net_debug_lock);
	list_add(&nst->st_net_debug_item, &send_tracking);
	spin_unlock(&o2net_debug_lock);
}

void o2net_debug_del_nst(struct o2net_send_tracking *nst)
{
	spin_lock(&o2net_debug_lock);
	if (!list_empty(&nst->st_net_debug_item))
		list_del_init(&nst->st_net_debug_item);
	spin_unlock(&o2net_debug_lock);
}

static struct o2net_send_tracking
			*next_nst(struct o2net_send_tracking *nst_start)
{
	struct o2net_send_tracking *nst, *ret = NULL;

	assert_spin_locked(&o2net_debug_lock);

	list_for_each_entry(nst, &nst_start->st_net_debug_item,
			    st_net_debug_item) {
		/* discover the head of the list */
		if (&nst->st_net_debug_item == &send_tracking)
			break;

		/* use st_task to detect real nsts in the list */
		if (nst->st_task != NULL) {
			ret = nst;
			break;
		}
	}

	return ret;
}

static void *nst_seq_start(struct seq_file *seq, loff_t *pos)
{
	struct o2net_send_tracking *nst, *dummy_nst = seq->private;

	spin_lock(&o2net_debug_lock);
	nst = next_nst(dummy_nst);
	spin_unlock(&o2net_debug_lock);

	return nst;
}

static void *nst_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct o2net_send_tracking *nst, *dummy_nst = seq->private;

	spin_lock(&o2net_debug_lock);
	nst = next_nst(dummy_nst);
	list_del_init(&dummy_nst->st_net_debug_item);
	if (nst)
		list_add(&dummy_nst->st_net_debug_item,
			 &nst->st_net_debug_item);
	spin_unlock(&o2net_debug_lock);

	return nst; /* unused, just needs to be null when done */
}

static int nst_seq_show(struct seq_file *seq, void *v)
{
	struct o2net_send_tracking *nst, *dummy_nst = seq->private;

	spin_lock(&o2net_debug_lock);
	nst = next_nst(dummy_nst);

	if (nst != NULL) {
		/* get_task_comm isn't exported.  oh well. */
		seq_printf(seq, "%p:\n"
			   "  pid:          %lu\n"
			   "  tgid:         %lu\n"
			   "  process name: %s\n"
			   "  node:         %u\n"
			   "  sc:           %p\n"
			   "  message id:   %d\n"
			   "  message type: %u\n"
			   "  message key:  0x%08x\n"
			   "  sock acquiry: %lu.%ld\n"
			   "  send start:   %lu.%ld\n"
			   "  wait start:   %lu.%ld\n",
			   nst, (unsigned long)nst->st_task->pid,
			   (unsigned long)nst->st_task->tgid,
			   nst->st_task->comm, nst->st_node,
			   nst->st_sc, nst->st_id, nst->st_msg_type,
			   nst->st_msg_key,
			   nst->st_sock_time.tv_sec,
			   (long)nst->st_sock_time.tv_usec,
			   nst->st_send_time.tv_sec,
			   (long)nst->st_send_time.tv_usec,
			   nst->st_status_time.tv_sec,
			   (long)nst->st_status_time.tv_usec);
	}

	spin_unlock(&o2net_debug_lock);

	return 0;
}

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

static const struct seq_operations nst_seq_ops = {
	.start = nst_seq_start,
	.next = nst_seq_next,
	.stop = nst_seq_stop,
	.show = nst_seq_show,
};

static int nst_fop_open(struct inode *inode, struct file *file)
{
	struct o2net_send_tracking *dummy_nst;
	struct seq_file *seq;
	int ret;

	dummy_nst = kmalloc(sizeof(struct o2net_send_tracking), GFP_KERNEL);
	if (dummy_nst == NULL) {
		ret = -ENOMEM;
		goto out;
	}
	dummy_nst->st_task = NULL;

	ret = seq_open(file, &nst_seq_ops);
	if (ret)
		goto out;

	seq = file->private_data;
	seq->private = dummy_nst;
	o2net_debug_add_nst(dummy_nst);

	dummy_nst = NULL;

out:
	kfree(dummy_nst);
	return ret;
}

static int nst_fop_release(struct inode *inode, struct file *file)
{
	struct seq_file *seq = file->private_data;
	struct o2net_send_tracking *dummy_nst = seq->private;

	o2net_debug_del_nst(dummy_nst);
	return seq_release_private(inode, file);
}

static const struct file_operations nst_seq_fops = {
	.open = nst_fop_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = nst_fop_release,
};

void o2net_debug_add_sc(struct o2net_sock_container *sc)
{
	spin_lock(&o2net_debug_lock);
	list_add(&sc->sc_net_debug_item, &sock_containers);
	spin_unlock(&o2net_debug_lock);
}

void o2net_debug_del_sc(struct o2net_sock_container *sc)
{
	spin_lock(&o2net_debug_lock);
	list_del_init(&sc->sc_net_debug_item);
	spin_unlock(&o2net_debug_lock);
}

static struct o2net_sock_container
			*next_sc(struct o2net_sock_container *sc_start)
{
	struct o2net_sock_container *sc, *ret = NULL;

	assert_spin_locked(&o2net_debug_lock);

	list_for_each_entry(sc, &sc_start->sc_net_debug_item,
			    sc_net_debug_item) {
		/* discover the head of the list miscast as a sc */
		if (&sc->sc_net_debug_item == &sock_containers)
			break;

		/* use sc_page to detect real scs in the list */
		if (sc->sc_page != NULL) {
			ret = sc;
			break;
		}
	}

	return ret;
}

static void *sc_seq_start(struct seq_file *seq, loff_t *pos)
{
	struct o2net_sock_container *sc, *dummy_sc = seq->private;

	spin_lock(&o2net_debug_lock);
	sc = next_sc(dummy_sc);
	spin_unlock(&o2net_debug_lock);

	return sc;
}

static void *sc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct o2net_sock_container *sc, *dummy_sc = seq->private;

	spin_lock(&o2net_debug_lock);
	sc = next_sc(dummy_sc);
	list_del_init(&dummy_sc->sc_net_debug_item);
	if (sc)
		list_add(&dummy_sc->sc_net_debug_item, &sc->sc_net_debug_item);
	spin_unlock(&o2net_debug_lock);

	return sc; /* unused, just needs to be null when done */
}

#define TV_SEC_USEC(TV) TV.tv_sec, (long)TV.tv_usec

static int sc_seq_show(struct seq_file *seq, void *v)
{
	struct o2net_sock_container *sc, *dummy_sc = seq->private;

	spin_lock(&o2net_debug_lock);
	sc = next_sc(dummy_sc);

	if (sc != NULL) {
		struct inet_sock *inet = NULL;

		__be32 saddr = 0, daddr = 0;
		__be16 sport = 0, dport = 0;

		if (sc->sc_sock) {
			inet = inet_sk(sc->sc_sock->sk);
			/* the stack's structs aren't sparse endian clean */
			saddr = (__force __be32)inet->inet_saddr;
			daddr = (__force __be32)inet->inet_daddr;
			sport = (__force __be16)inet->inet_sport;
			dport = (__force __be16)inet->inet_dport;
		}

		/* XXX sigh, inet-> doesn't have sparse annotation so any
		 * use of it here generates a warning with -Wbitwise */
		seq_printf(seq, "%p:\n"
			   "  krefs:           %d\n"
			   "  sock:            %pI4:%u -> "
					      "%pI4:%u\n"
			   "  remote node:     %s\n"
			   "  page off:        %zu\n"
			   "  handshake ok:    %u\n"
			   "  timer:           %lu.%ld\n"
			   "  data ready:      %lu.%ld\n"
			   "  advance start:   %lu.%ld\n"
			   "  advance stop:    %lu.%ld\n"
			   "  func start:      %lu.%ld\n"
			   "  func stop:       %lu.%ld\n"
			   "  func key:        %u\n"
			   "  func type:       %u\n",
			   sc,
			   atomic_read(&sc->sc_kref.refcount),
			   &saddr, inet ? ntohs(sport) : 0,
			   &daddr, inet ? ntohs(dport) : 0,
			   sc->sc_node->nd_name,
			   sc->sc_page_off,
			   sc->sc_handshake_ok,
			   TV_SEC_USEC(sc->sc_tv_timer),
			   TV_SEC_USEC(sc->sc_tv_data_ready),
			   TV_SEC_USEC(sc->sc_tv_advance_start),
			   TV_SEC_USEC(sc->sc_tv_advance_stop),
			   TV_SEC_USEC(sc->sc_tv_func_start),
			   TV_SEC_USEC(sc->sc_tv_func_stop),
			   sc->sc_msg_key,
			   sc->sc_msg_type);
	}


	spin_unlock(&o2net_debug_lock);

	return 0;
}

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

static const struct seq_operations sc_seq_ops = {
	.start = sc_seq_start,
	.next = sc_seq_next,
	.stop = sc_seq_stop,
	.show = sc_seq_show,
};

static int sc_fop_open(struct inode *inode, struct file *file)
{
	struct o2net_sock_container *dummy_sc;
	struct seq_file *seq;
	int ret;

	dummy_sc = kmalloc(sizeof(struct o2net_sock_container), GFP_KERNEL);
	if (dummy_sc == NULL) {
		ret = -ENOMEM;
		goto out;
	}
	dummy_sc->sc_page = NULL;

	ret = seq_open(file, &sc_seq_ops);
	if (ret)
		goto out;

	seq = file->private_data;
	seq->private = dummy_sc;
	o2net_debug_add_sc(dummy_sc);

	dummy_sc = NULL;

out:
	kfree(dummy_sc);
	return ret;
}

static int sc_fop_release(struct inode *inode, struct file *file)
{
	struct seq_file *seq = file->private_data;
	struct o2net_sock_container *dummy_sc = seq->private;

	o2net_debug_del_sc(dummy_sc);
	return seq_release_private(inode, file);
}

static const struct file_operations sc_seq_fops = {
	.open = sc_fop_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = sc_fop_release,
};

int o2net_debugfs_init(void)
{
	o2net_dentry = debugfs_create_dir(O2NET_DEBUG_DIR, NULL);
	if (!o2net_dentry) {
		mlog_errno(-ENOMEM);
		goto bail;
	}

	nst_dentry = debugfs_create_file(NST_DEBUG_NAME, S_IFREG|S_IRUSR,
					 o2net_dentry, NULL,
					 &nst_seq_fops);
	if (!nst_dentry) {
		mlog_errno(-ENOMEM);
		goto bail;
	}

	sc_dentry = debugfs_create_file(SC_DEBUG_NAME, S_IFREG|S_IRUSR,
					o2net_dentry, NULL,
					&sc_seq_fops);
	if (!sc_dentry) {
		mlog_errno(-ENOMEM);
		goto bail;
	}

	return 0;
bail:
	if (sc_dentry)
		debugfs_remove(sc_dentry);
	if (nst_dentry)
		debugfs_remove(nst_dentry);
	if (o2net_dentry)
		debugfs_remove(o2net_dentry);
	return -ENOMEM;
}

void o2net_debugfs_exit(void)
{
	if (sc_dentry)
		debugfs_remove(sc_dentry);
	if (nst_dentry)
		debugfs_remove(nst_dentry);
	if (o2net_dentry)
		debugfs_remove(o2net_dentry);
}

#endif	/* CONFIG_DEBUG_FS */
Commit	Line	Data
2309e9e0 SM	1	/* -- mode: c; c-basic-offset: 8; --
	2	* vim: noexpandtab sw=8 ts=8 sts=0:
	3	*
	4	* netdebug.c
	5	*
	6	* debug functionality for o2net
	7	*
	8	* Copyright (C) 2005, 2008 Oracle. All rights reserved.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public
	12	* License as published by the Free Software Foundation; either
	13	* version 2 of the License, or (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public
	21	* License along with this program; if not, write to the
	22	* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	23	* Boston, MA 021110-1307, USA.
	24	*
	25	*/
	26
	27	#ifdef CONFIG_DEBUG_FS
	28
	29	#include <linux/module.h>
	30	#include <linux/types.h>
	31	#include <linux/slab.h>
	32	#include <linux/idr.h>
	33	#include <linux/kref.h>
	34	#include <linux/seq_file.h>
	35	#include <linux/debugfs.h>
	36
	37	#include <linux/uaccess.h>
	38
	39	#include "tcp.h"
	40	#include "nodemanager.h"
	41	#define MLOG_MASK_PREFIX ML_TCP
	42	#include "masklog.h"
	43
	44	#include "tcp_internal.h"
	45
	46	#define O2NET_DEBUG_DIR "o2net"
	47	#define SC_DEBUG_NAME "sock_containers"
	48	#define NST_DEBUG_NAME "send_tracking"
	49
	50	static struct dentry *o2net_dentry;
	51	static struct dentry *sc_dentry;
	52	static struct dentry *nst_dentry;
	53
	54	static DEFINE_SPINLOCK(o2net_debug_lock);
	55
	56	static LIST_HEAD(sock_containers);
	57	static LIST_HEAD(send_tracking);
	58
	59	void o2net_debug_add_nst(struct o2net_send_tracking *nst)
	60	{
	61	spin_lock(&o2net_debug_lock);
	62	list_add(&nst->st_net_debug_item, &send_tracking);
	63	spin_unlock(&o2net_debug_lock);
	64	}
65
66	void o2net_debug_del_nst(struct o2net_send_tracking *nst)
67	{
68	spin_lock(&o2net_debug_lock);
69	if (!list_empty(&nst->st_net_debug_item))
70	list_del_init(&nst->st_net_debug_item);
71	spin_unlock(&o2net_debug_lock);
72	}
73
74	static struct o2net_send_tracking
75	next_nst(struct o2net_send_tracking nst_start)
76	{
77	struct o2net_send_tracking nst, ret = NULL;
78
79	assert_spin_locked(&o2net_debug_lock);
80
81	list_for_each_entry(nst, &nst_start->st_net_debug_item,
82	st_net_debug_item) {
83	/* discover the head of the list */
84	if (&nst->st_net_debug_item == &send_tracking)
85	break;
86
87	/* use st_task to detect real nsts in the list */
88	if (nst->st_task != NULL) {
89	ret = nst;
90	break;
91	}
92	}
93
94	return ret;
95	}
96
97	static void nst_seq_start(struct seq_file seq, loff_t *pos)
98	{
99	struct o2net_send_tracking nst, dummy_nst = seq->private;
100
101	spin_lock(&o2net_debug_lock);
102	nst = next_nst(dummy_nst);
103	spin_unlock(&o2net_debug_lock);
104
105	return nst;
106	}
107
108	static void nst_seq_next(struct seq_file seq, void v, loff_t pos)
109	{
110	struct o2net_send_tracking nst, dummy_nst = seq->private;
111
112	spin_lock(&o2net_debug_lock);
113	nst = next_nst(dummy_nst);
114	list_del_init(&dummy_nst->st_net_debug_item);
115	if (nst)
116	list_add(&dummy_nst->st_net_debug_item,
117	&nst->st_net_debug_item);
118	spin_unlock(&o2net_debug_lock);
119
120	return nst; /* unused, just needs to be null when done */
121	}
122
123	static int nst_seq_show(struct seq_file seq, void v)
124	{
125	struct o2net_send_tracking nst, dummy_nst = seq->private;
126
127	spin_lock(&o2net_debug_lock);
128	nst = next_nst(dummy_nst);
129
130	if (nst != NULL) {
131	/* get_task_comm isn't exported. oh well. */
132	seq_printf(seq, "%p:\n"
133	" pid: %lu\n"
134	" tgid: %lu\n"
135	" process name: %s\n"
136	" node: %u\n"
137	" sc: %p\n"
138	" message id: %d\n"
139	" message type: %u\n"
140	" message key: 0x%08x\n"
a57a874b AB	141	" sock acquiry: %lu.%ld\n"
	142	" send start: %lu.%ld\n"
	143	" wait start: %lu.%ld\n",
2309e9e0 SM	144	nst, (unsigned long)nst->st_task->pid,
	145	(unsigned long)nst->st_task->tgid,
	146	nst->st_task->comm, nst->st_node,
	147	nst->st_sc, nst->st_id, nst->st_msg_type,
	148	nst->st_msg_key,
461c6a30	149	nst->st_sock_time.tv_sec,
a57a874b	150	(long)nst->st_sock_time.tv_usec,
461c6a30	151	nst->st_send_time.tv_sec,
a57a874b	152	(long)nst->st_send_time.tv_usec,
2309e9e0	153	nst->st_status_time.tv_sec,
a57a874b	154	(long)nst->st_status_time.tv_usec);
2309e9e0 SM	155	}
	156
	157	spin_unlock(&o2net_debug_lock);
	158
	159	return 0;
	160	}
	161
	162	static void nst_seq_stop(struct seq_file seq, void v)
	163	{
	164	}
	165
88e9d34c	166	static const struct seq_operations nst_seq_ops = {
2309e9e0 SM	167	.start = nst_seq_start,
	168	.next = nst_seq_next,
	169	.stop = nst_seq_stop,
	170	.show = nst_seq_show,
	171	};
	172
	173	static int nst_fop_open(struct inode inode, struct file file)
	174	{
	175	struct o2net_send_tracking *dummy_nst;
	176	struct seq_file *seq;
	177	int ret;
	178
	179	dummy_nst = kmalloc(sizeof(struct o2net_send_tracking), GFP_KERNEL);
	180	if (dummy_nst == NULL) {
	181	ret = -ENOMEM;
	182	goto out;
	183	}
	184	dummy_nst->st_task = NULL;
	185
	186	ret = seq_open(file, &nst_seq_ops);
	187	if (ret)
	188	goto out;
	189
	190	seq = file->private_data;
	191	seq->private = dummy_nst;
	192	o2net_debug_add_nst(dummy_nst);
	193
	194	dummy_nst = NULL;
	195
	196	out:
	197	kfree(dummy_nst);
	198	return ret;
	199	}
	200
	201	static int nst_fop_release(struct inode inode, struct file file)
	202	{
	203	struct seq_file *seq = file->private_data;
	204	struct o2net_send_tracking *dummy_nst = seq->private;
	205
	206	o2net_debug_del_nst(dummy_nst);
	207	return seq_release_private(inode, file);
	208	}
	209
828c0950	210	static const struct file_operations nst_seq_fops = {
2309e9e0 SM	211	.open = nst_fop_open,
	212	.read = seq_read,
	213	.llseek = seq_lseek,
	214	.release = nst_fop_release,
	215	};
	216
	217	void o2net_debug_add_sc(struct o2net_sock_container *sc)
	218	{
	219	spin_lock(&o2net_debug_lock);
	220	list_add(&sc->sc_net_debug_item, &sock_containers);
	221	spin_unlock(&o2net_debug_lock);
	222	}
	223
	224	void o2net_debug_del_sc(struct o2net_sock_container *sc)
	225	{
	226	spin_lock(&o2net_debug_lock);
	227	list_del_init(&sc->sc_net_debug_item);
	228	spin_unlock(&o2net_debug_lock);
	229	}
	230
	231	static struct o2net_sock_container
	232	next_sc(struct o2net_sock_container sc_start)
	233	{
	234	struct o2net_sock_container sc, ret = NULL;
	235
	236	assert_spin_locked(&o2net_debug_lock);
	237
	238	list_for_each_entry(sc, &sc_start->sc_net_debug_item,
	239	sc_net_debug_item) {
	240	/* discover the head of the list miscast as a sc */
	241	if (&sc->sc_net_debug_item == &sock_containers)
	242	break;
	243
	244	/* use sc_page to detect real scs in the list */
	245	if (sc->sc_page != NULL) {
	246	ret = sc;
	247	break;
	248	}
	249	}
	250
	251	return ret;
	252	}
	253
	254	static void sc_seq_start(struct seq_file seq, loff_t *pos)
	255	{
	256	struct o2net_sock_container sc, dummy_sc = seq->private;
	257
	258	spin_lock(&o2net_debug_lock);
	259	sc = next_sc(dummy_sc);
	260	spin_unlock(&o2net_debug_lock);
	261
	262	return sc;
	263	}
	264
	265	static void sc_seq_next(struct seq_file seq, void v, loff_t pos)
	266	{
	267	struct o2net_sock_container sc, dummy_sc = seq->private;
	268
	269	spin_lock(&o2net_debug_lock);
	270	sc = next_sc(dummy_sc);
	271	list_del_init(&dummy_sc->sc_net_debug_item);
	272	if (sc)
	273	list_add(&dummy_sc->sc_net_debug_item, &sc->sc_net_debug_item);
	274	spin_unlock(&o2net_debug_lock);
275
276	return sc; /* unused, just needs to be null when done */
277	}
278
a57a874b	279	#define TV_SEC_USEC(TV) TV.tv_sec, (long)TV.tv_usec
2309e9e0 SM	280
	281	static int sc_seq_show(struct seq_file seq, void v)
	282	{
	283	struct o2net_sock_container sc, dummy_sc = seq->private;
	284
	285	spin_lock(&o2net_debug_lock);
	286	sc = next_sc(dummy_sc);
	287
	288	if (sc != NULL) {
	289	struct inet_sock *inet = NULL;
	290
	291	__be32 saddr = 0, daddr = 0;
	292	__be16 sport = 0, dport = 0;
	293
	294	if (sc->sc_sock) {
	295	inet = inet_sk(sc->sc_sock->sk);
	296	/* the stack's structs aren't sparse endian clean */
c720c7e8 ED	297	saddr = (__force __be32)inet->inet_saddr;
	298	daddr = (__force __be32)inet->inet_daddr;
	299	sport = (__force __be16)inet->inet_sport;
	300	dport = (__force __be16)inet->inet_dport;
2309e9e0 SM	301	}
	302
	303	/* XXX sigh, inet-> doesn't have sparse annotation so any
	304	* use of it here generates a warning with -Wbitwise */
	305	seq_printf(seq, "%p:\n"
	306	" krefs: %d\n"
be859405 HH	307	" sock: %pI4:%u -> "
be859405 HH	308	"%pI4:%u\n"
2309e9e0 SM	309	" remote node: %s\n"
	310	" page off: %zu\n"
	311	" handshake ok: %u\n"
a57a874b AB	312	" timer: %lu.%ld\n"
	313	" data ready: %lu.%ld\n"
	314	" advance start: %lu.%ld\n"
	315	" advance stop: %lu.%ld\n"
	316	" func start: %lu.%ld\n"
	317	" func stop: %lu.%ld\n"
2309e9e0 SM	318	" func key: %u\n"
	319	" func type: %u\n",
	320	sc,
	321	atomic_read(&sc->sc_kref.refcount),
be859405 HH	322	&saddr, inet ? ntohs(sport) : 0,
be859405 HH	323	&daddr, inet ? ntohs(dport) : 0,
2309e9e0 SM	324	sc->sc_node->nd_name,
	325	sc->sc_page_off,
	326	sc->sc_handshake_ok,
	327	TV_SEC_USEC(sc->sc_tv_timer),
	328	TV_SEC_USEC(sc->sc_tv_data_ready),
	329	TV_SEC_USEC(sc->sc_tv_advance_start),
	330	TV_SEC_USEC(sc->sc_tv_advance_stop),
	331	TV_SEC_USEC(sc->sc_tv_func_start),
	332	TV_SEC_USEC(sc->sc_tv_func_stop),
	333	sc->sc_msg_key,
	334	sc->sc_msg_type);
	335	}
	336
	337
	338	spin_unlock(&o2net_debug_lock);
	339
	340	return 0;
	341	}
	342
	343	static void sc_seq_stop(struct seq_file seq, void v)
	344	{
	345	}
	346
88e9d34c	347	static const struct seq_operations sc_seq_ops = {
2309e9e0 SM	348	.start = sc_seq_start,
	349	.next = sc_seq_next,
	350	.stop = sc_seq_stop,
	351	.show = sc_seq_show,
	352	};
	353
	354	static int sc_fop_open(struct inode inode, struct file file)
	355	{
	356	struct o2net_sock_container *dummy_sc;
	357	struct seq_file *seq;
	358	int ret;
	359
	360	dummy_sc = kmalloc(sizeof(struct o2net_sock_container), GFP_KERNEL);
	361	if (dummy_sc == NULL) {
	362	ret = -ENOMEM;
	363	goto out;
	364	}
	365	dummy_sc->sc_page = NULL;
	366
	367	ret = seq_open(file, &sc_seq_ops);
	368	if (ret)
	369	goto out;
	370
	371	seq = file->private_data;
	372	seq->private = dummy_sc;
	373	o2net_debug_add_sc(dummy_sc);
	374
	375	dummy_sc = NULL;
	376
	377	out:
	378	kfree(dummy_sc);
	379	return ret;
	380	}
	381
	382	static int sc_fop_release(struct inode inode, struct file file)
	383	{
	384	struct seq_file *seq = file->private_data;
	385	struct o2net_sock_container *dummy_sc = seq->private;
	386
	387	o2net_debug_del_sc(dummy_sc);
	388	return seq_release_private(inode, file);
	389	}
	390
828c0950	391	static const struct file_operations sc_seq_fops = {
2309e9e0 SM	392	.open = sc_fop_open,
	393	.read = seq_read,
	394	.llseek = seq_lseek,
	395	.release = sc_fop_release,
	396	};
	397
	398	int o2net_debugfs_init(void)
	399	{
	400	o2net_dentry = debugfs_create_dir(O2NET_DEBUG_DIR, NULL);
	401	if (!o2net_dentry) {
	402	mlog_errno(-ENOMEM);
	403	goto bail;
	404	}
	405
	406	nst_dentry = debugfs_create_file(NST_DEBUG_NAME, S_IFREG\|S_IRUSR,
	407	o2net_dentry, NULL,
	408	&nst_seq_fops);
	409	if (!nst_dentry) {
	410	mlog_errno(-ENOMEM);
	411	goto bail;
	412	}
	413
	414	sc_dentry = debugfs_create_file(SC_DEBUG_NAME, S_IFREG\|S_IRUSR,
	415	o2net_dentry, NULL,
	416	&sc_seq_fops);
	417	if (!sc_dentry) {
	418	mlog_errno(-ENOMEM);
	419	goto bail;
	420	}
	421
	422	return 0;
	423	bail:
	424	if (sc_dentry)
	425	debugfs_remove(sc_dentry);
	426	if (nst_dentry)
	427	debugfs_remove(nst_dentry);
	428	if (o2net_dentry)
	429	debugfs_remove(o2net_dentry);
	430	return -ENOMEM;
	431	}
	432
	433	void o2net_debugfs_exit(void)
	434	{
	435	if (sc_dentry)
	436	debugfs_remove(sc_dentry);
	437	if (nst_dentry)
	438	debugfs_remove(nst_dentry);
	439	if (o2net_dentry)
	440	debugfs_remove(o2net_dentry);
	441	}
	442
	443	#endif /* CONFIG_DEBUG_FS */