[mirror_ubuntu-zesty-kernel.git] / net / batman-adv / bat_debugfs.c

/* Copyright (C) 2010-2012 B.A.T.M.A.N. contributors:
 *
 * Marek Lindner
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */

#include "main.h"

#include <linux/debugfs.h>

#include "bat_debugfs.h"
#include "translation-table.h"
#include "originator.h"
#include "hard-interface.h"
#include "gateway_common.h"
#include "gateway_client.h"
#include "soft-interface.h"
#include "vis.h"
#include "icmp_socket.h"
#include "bridge_loop_avoidance.h"

static struct dentry *bat_debugfs;

#ifdef CONFIG_BATMAN_ADV_DEBUG
#define LOG_BUFF_MASK (log_buff_len-1)
#define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK])

static int log_buff_len = LOG_BUF_LEN;

static void emit_log_char(struct debug_log *debug_log, char c)
{
	LOG_BUFF(debug_log->log_end) = c;
	debug_log->log_end++;

	if (debug_log->log_end - debug_log->log_start > log_buff_len)
		debug_log->log_start = debug_log->log_end - log_buff_len;
}

__printf(2, 3)
static int fdebug_log(struct debug_log *debug_log, const char *fmt, ...)
{
	va_list args;
	static char debug_log_buf[256];
	char *p;

	if (!debug_log)
		return 0;

	spin_lock_bh(&debug_log->lock);
	va_start(args, fmt);
	vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args);
	va_end(args);

	for (p = debug_log_buf; *p != 0; p++)
		emit_log_char(debug_log, *p);

	spin_unlock_bh(&debug_log->lock);

	wake_up(&debug_log->queue_wait);

	return 0;
}

int batadv_debug_log(struct bat_priv *bat_priv, const char *fmt, ...)
{
	va_list args;
	char tmp_log_buf[256];

	va_start(args, fmt);
	vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
	fdebug_log(bat_priv->debug_log, "[%10u] %s",
		   jiffies_to_msecs(jiffies), tmp_log_buf);
	va_end(args);

	return 0;
}

static int log_open(struct inode *inode, struct file *file)
{
	nonseekable_open(inode, file);
	file->private_data = inode->i_private;
	batadv_inc_module_count();
	return 0;
}

static int log_release(struct inode *inode, struct file *file)
{
	batadv_dec_module_count();
	return 0;
}

static ssize_t log_read(struct file *file, char __user *buf,
			size_t count, loff_t *ppos)
{
	struct bat_priv *bat_priv = file->private_data;
	struct debug_log *debug_log = bat_priv->debug_log;
	int error, i = 0;
	char c;

	if ((file->f_flags & O_NONBLOCK) &&
	    !(debug_log->log_end - debug_log->log_start))
		return -EAGAIN;

	if (!buf)
		return -EINVAL;

	if (count == 0)
		return 0;

	if (!access_ok(VERIFY_WRITE, buf, count))
		return -EFAULT;

	error = wait_event_interruptible(debug_log->queue_wait,
				(debug_log->log_start - debug_log->log_end));

	if (error)
		return error;

	spin_lock_bh(&debug_log->lock);

	while ((!error) && (i < count) &&
	       (debug_log->log_start != debug_log->log_end)) {
		c = LOG_BUFF(debug_log->log_start);

		debug_log->log_start++;

		spin_unlock_bh(&debug_log->lock);

		error = __put_user(c, buf);

		spin_lock_bh(&debug_log->lock);

		buf++;
		i++;

	}

	spin_unlock_bh(&debug_log->lock);

	if (!error)
		return i;

	return error;
}

static unsigned int log_poll(struct file *file, poll_table *wait)
{
	struct bat_priv *bat_priv = file->private_data;
	struct debug_log *debug_log = bat_priv->debug_log;

	poll_wait(file, &debug_log->queue_wait, wait);

	if (debug_log->log_end - debug_log->log_start)
		return POLLIN | POLLRDNORM;

	return 0;
}

static const struct file_operations log_fops = {
	.open           = log_open,
	.release        = log_release,
	.read           = log_read,
	.poll           = log_poll,
	.llseek         = no_llseek,
};

static int debug_log_setup(struct bat_priv *bat_priv)
{
	struct dentry *d;

	if (!bat_priv->debug_dir)
		goto err;

	bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC);
	if (!bat_priv->debug_log)
		goto err;

	spin_lock_init(&bat_priv->debug_log->lock);
	init_waitqueue_head(&bat_priv->debug_log->queue_wait);

	d = debugfs_create_file("log", S_IFREG | S_IRUSR,
				bat_priv->debug_dir, bat_priv, &log_fops);
	if (!d)
		goto err;

	return 0;

err:
	return -ENOMEM;
}

static void debug_log_cleanup(struct bat_priv *bat_priv)
{
	kfree(bat_priv->debug_log);
	bat_priv->debug_log = NULL;
}
#else /* CONFIG_BATMAN_ADV_DEBUG */
static int debug_log_setup(struct bat_priv *bat_priv)
{
	bat_priv->debug_log = NULL;
	return 0;
}

static void debug_log_cleanup(struct bat_priv *bat_priv)
{
	return;
}
#endif

static int bat_algorithms_open(struct inode *inode, struct file *file)
{
	return single_open(file, batadv_algo_seq_print_text, NULL);
}

static int originators_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_orig_seq_print_text, net_dev);
}

static int gateways_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_gw_client_seq_print_text, net_dev);
}

static int transtable_global_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_tt_global_seq_print_text, net_dev);
}

#ifdef CONFIG_BATMAN_ADV_BLA
static int bla_claim_table_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_bla_claim_table_seq_print_text,
			   net_dev);
}
#endif

static int transtable_local_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_tt_local_seq_print_text, net_dev);
}

static int vis_data_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_vis_seq_print_text, net_dev);
}

struct bat_debuginfo {
	struct attribute attr;
	const struct file_operations fops;
};

#define BAT_DEBUGINFO(_name, _mode, _open)	\
struct bat_debuginfo bat_debuginfo_##_name = {	\
	.attr = { .name = __stringify(_name),	\
		  .mode = _mode, },		\
	.fops = { .owner = THIS_MODULE,		\
		  .open = _open,		\
		  .read	= seq_read,		\
		  .llseek = seq_lseek,		\
		  .release = single_release,	\
		}				\
};

static BAT_DEBUGINFO(routing_algos, S_IRUGO, bat_algorithms_open);
static BAT_DEBUGINFO(originators, S_IRUGO, originators_open);
static BAT_DEBUGINFO(gateways, S_IRUGO, gateways_open);
static BAT_DEBUGINFO(transtable_global, S_IRUGO, transtable_global_open);
#ifdef CONFIG_BATMAN_ADV_BLA
static BAT_DEBUGINFO(bla_claim_table, S_IRUGO, bla_claim_table_open);
#endif
static BAT_DEBUGINFO(transtable_local, S_IRUGO, transtable_local_open);
static BAT_DEBUGINFO(vis_data, S_IRUGO, vis_data_open);

static struct bat_debuginfo *mesh_debuginfos[] = {
	&bat_debuginfo_originators,
	&bat_debuginfo_gateways,
	&bat_debuginfo_transtable_global,
#ifdef CONFIG_BATMAN_ADV_BLA
	&bat_debuginfo_bla_claim_table,
#endif
	&bat_debuginfo_transtable_local,
	&bat_debuginfo_vis_data,
	NULL,
};

void batadv_debugfs_init(void)
{
	struct bat_debuginfo *bat_debug;
	struct dentry *file;

	bat_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL);
	if (bat_debugfs == ERR_PTR(-ENODEV))
		bat_debugfs = NULL;

	if (!bat_debugfs)
		goto out;

	bat_debug = &bat_debuginfo_routing_algos;
	file = debugfs_create_file(bat_debug->attr.name,
				   S_IFREG | bat_debug->attr.mode,
				   bat_debugfs, NULL, &bat_debug->fops);
	if (!file)
		pr_err("Can't add debugfs file: %s\n", bat_debug->attr.name);

out:
	return;
}

void batadv_debugfs_destroy(void)
{
	if (bat_debugfs) {
		debugfs_remove_recursive(bat_debugfs);
		bat_debugfs = NULL;
	}
}

int batadv_debugfs_add_meshif(struct net_device *dev)
{
	struct bat_priv *bat_priv = netdev_priv(dev);
	struct bat_debuginfo **bat_debug;
	struct dentry *file;

	if (!bat_debugfs)
		goto out;

	bat_priv->debug_dir = debugfs_create_dir(dev->name, bat_debugfs);
	if (!bat_priv->debug_dir)
		goto out;

	if (batadv_socket_setup(bat_priv) < 0)
		goto rem_attr;

	if (debug_log_setup(bat_priv) < 0)
		goto rem_attr;

	for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) {
		file = debugfs_create_file(((*bat_debug)->attr).name,
					  S_IFREG | ((*bat_debug)->attr).mode,
					  bat_priv->debug_dir,
					  dev, &(*bat_debug)->fops);
		if (!file) {
			bat_err(dev, "Can't add debugfs file: %s/%s\n",
				dev->name, ((*bat_debug)->attr).name);
			goto rem_attr;
		}
	}

	return 0;
rem_attr:
	debugfs_remove_recursive(bat_priv->debug_dir);
	bat_priv->debug_dir = NULL;
out:
#ifdef CONFIG_DEBUG_FS
	return -ENOMEM;
#else
	return 0;
#endif /* CONFIG_DEBUG_FS */
}

void batadv_debugfs_del_meshif(struct net_device *dev)
{
	struct bat_priv *bat_priv = netdev_priv(dev);

	debug_log_cleanup(bat_priv);

	if (bat_debugfs) {
		debugfs_remove_recursive(bat_priv->debug_dir);
		bat_priv->debug_dir = NULL;
	}
}
Commit	Line	Data
9cfc7bd6	1	/* Copyright (C) 2010-2012 B.A.T.M.A.N. contributors:
c6c8fea2 SE	2	*
	3	* Marek Lindner
	4	*
	5	* This program is free software; you can redistribute it and/or
	6	* modify it under the terms of version 2 of the GNU General Public
	7	* License as published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful, but
	10	* WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	* General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	17	* 02110-1301, USA
c6c8fea2 SE	18	*/
	19
	20	#include "main.h"
	21
	22	#include <linux/debugfs.h>
	23
	24	#include "bat_debugfs.h"
	25	#include "translation-table.h"
	26	#include "originator.h"
	27	#include "hard-interface.h"
	28	#include "gateway_common.h"
	29	#include "gateway_client.h"
	30	#include "soft-interface.h"
	31	#include "vis.h"
	32	#include "icmp_socket.h"
9bf8e4d4	33	#include "bridge_loop_avoidance.h"
c6c8fea2 SE	34
	35	static struct dentry *bat_debugfs;
	36
	37	#ifdef CONFIG_BATMAN_ADV_DEBUG
	38	#define LOG_BUFF_MASK (log_buff_len-1)
	39	#define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK])
	40
	41	static int log_buff_len = LOG_BUF_LEN;
	42
	43	static void emit_log_char(struct debug_log *debug_log, char c)
	44	{
	45	LOG_BUFF(debug_log->log_end) = c;
	46	debug_log->log_end++;
	47
	48	if (debug_log->log_end - debug_log->log_start > log_buff_len)
	49	debug_log->log_start = debug_log->log_end - log_buff_len;
	50	}
	51
d3a547be	52	__printf(2, 3)
747e4221	53	static int fdebug_log(struct debug_log debug_log, const char fmt, ...)
c6c8fea2	54	{
c6c8fea2 SE	55	va_list args;
	56	static char debug_log_buf[256];
	57	char *p;
	58
	59	if (!debug_log)
	60	return 0;
	61
	62	spin_lock_bh(&debug_log->lock);
	63	va_start(args, fmt);
1299bdaa	64	vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args);
c6c8fea2 SE	65	va_end(args);
	66
	67	for (p = debug_log_buf; *p != 0; p++)
	68	emit_log_char(debug_log, *p);
	69
	70	spin_unlock_bh(&debug_log->lock);
	71
	72	wake_up(&debug_log->queue_wait);
	73
	74	return 0;
	75	}
	76
40a072d7	77	int batadv_debug_log(struct bat_priv bat_priv, const char fmt, ...)
c6c8fea2 SE	78	{
	79	va_list args;
	80	char tmp_log_buf[256];
	81
	82	va_start(args, fmt);
	83	vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
0b0094e0 ML	84	fdebug_log(bat_priv->debug_log, "[%10u] %s",
0b0094e0 ML	85	jiffies_to_msecs(jiffies), tmp_log_buf);
c6c8fea2 SE	86	va_end(args);
	87
	88	return 0;
	89	}
	90
	91	static int log_open(struct inode inode, struct file file)
	92	{
	93	nonseekable_open(inode, file);
	94	file->private_data = inode->i_private;
3193e8fd	95	batadv_inc_module_count();
c6c8fea2 SE	96	return 0;
	97	}
	98
	99	static int log_release(struct inode inode, struct file file)
	100	{
3193e8fd	101	batadv_dec_module_count();
c6c8fea2 SE	102	return 0;
	103	}
	104
	105	static ssize_t log_read(struct file file, char __user buf,
	106	size_t count, loff_t *ppos)
	107	{
	108	struct bat_priv *bat_priv = file->private_data;
	109	struct debug_log *debug_log = bat_priv->debug_log;
	110	int error, i = 0;
	111	char c;
	112
	113	if ((file->f_flags & O_NONBLOCK) &&
	114	!(debug_log->log_end - debug_log->log_start))
	115	return -EAGAIN;
	116
16f14b45	117	if (!buf)
c6c8fea2 SE	118	return -EINVAL;
	119
	120	if (count == 0)
	121	return 0;
	122
	123	if (!access_ok(VERIFY_WRITE, buf, count))
	124	return -EFAULT;
	125
	126	error = wait_event_interruptible(debug_log->queue_wait,
	127	(debug_log->log_start - debug_log->log_end));
	128
	129	if (error)
	130	return error;
	131
	132	spin_lock_bh(&debug_log->lock);
	133
	134	while ((!error) && (i < count) &&
	135	(debug_log->log_start != debug_log->log_end)) {
	136	c = LOG_BUFF(debug_log->log_start);
	137
	138	debug_log->log_start++;
	139
	140	spin_unlock_bh(&debug_log->lock);
	141
	142	error = __put_user(c, buf);
	143
	144	spin_lock_bh(&debug_log->lock);
	145
	146	buf++;
	147	i++;
	148
	149	}
	150
	151	spin_unlock_bh(&debug_log->lock);
	152
	153	if (!error)
	154	return i;
	155
	156	return error;
	157	}
	158
	159	static unsigned int log_poll(struct file file, poll_table wait)
	160	{
	161	struct bat_priv *bat_priv = file->private_data;
	162	struct debug_log *debug_log = bat_priv->debug_log;
	163
	164	poll_wait(file, &debug_log->queue_wait, wait);
	165
	166	if (debug_log->log_end - debug_log->log_start)
	167	return POLLIN \| POLLRDNORM;
	168
	169	return 0;
	170	}
	171
	172	static const struct file_operations log_fops = {
	173	.open = log_open,
	174	.release = log_release,
	175	.read = log_read,
	176	.poll = log_poll,
	177	.llseek = no_llseek,
	178	};
	179
	180	static int debug_log_setup(struct bat_priv *bat_priv)
	181	{
182	struct dentry *d;
183
184	if (!bat_priv->debug_dir)
185	goto err;
186
704509b8	187	bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC);
c6c8fea2 SE	188	if (!bat_priv->debug_log)
	189	goto err;
	190
	191	spin_lock_init(&bat_priv->debug_log->lock);
	192	init_waitqueue_head(&bat_priv->debug_log->queue_wait);
	193
	194	d = debugfs_create_file("log", S_IFREG \| S_IRUSR,
	195	bat_priv->debug_dir, bat_priv, &log_fops);
5346c35e	196	if (!d)
c6c8fea2 SE	197	goto err;
	198
	199	return 0;
	200
	201	err:
5346c35e	202	return -ENOMEM;
c6c8fea2 SE	203	}
	204
	205	static void debug_log_cleanup(struct bat_priv *bat_priv)
	206	{
	207	kfree(bat_priv->debug_log);
	208	bat_priv->debug_log = NULL;
	209	}
	210	#else /* CONFIG_BATMAN_ADV_DEBUG */
	211	static int debug_log_setup(struct bat_priv *bat_priv)
	212	{
	213	bat_priv->debug_log = NULL;
	214	return 0;
	215	}
	216
	217	static void debug_log_cleanup(struct bat_priv *bat_priv)
	218	{
	219	return;
	220	}
	221	#endif
	222
1c280471 ML	223	static int bat_algorithms_open(struct inode inode, struct file file)
1c280471 ML	224	{
3193e8fd	225	return single_open(file, batadv_algo_seq_print_text, NULL);
1c280471 ML	226	}
1c280471 ML	227
c6c8fea2 SE	228	static int originators_open(struct inode inode, struct file file)
	229	{
	230	struct net_device net_dev = (struct net_device )inode->i_private;
7d211efc	231	return single_open(file, batadv_orig_seq_print_text, net_dev);
c6c8fea2 SE	232	}
	233
	234	static int gateways_open(struct inode inode, struct file file)
	235	{
	236	struct net_device net_dev = (struct net_device )inode->i_private;
7cf06bc6	237	return single_open(file, batadv_gw_client_seq_print_text, net_dev);
c6c8fea2 SE	238	}
c6c8fea2 SE	239
c6c8fea2 SE	240	static int transtable_global_open(struct inode inode, struct file file)
	241	{
	242	struct net_device net_dev = (struct net_device )inode->i_private;
08c36d3e	243	return single_open(file, batadv_tt_global_seq_print_text, net_dev);
c6c8fea2 SE	244	}
c6c8fea2 SE	245
7a5cc242	246	#ifdef CONFIG_BATMAN_ADV_BLA
9bf8e4d4 SW	247	static int bla_claim_table_open(struct inode inode, struct file file)
	248	{
	249	struct net_device net_dev = (struct net_device )inode->i_private;
08adf151 SE	250	return single_open(file, batadv_bla_claim_table_seq_print_text,
08adf151 SE	251	net_dev);
9bf8e4d4	252	}
7a5cc242	253	#endif
9bf8e4d4	254
c6c8fea2 SE	255	static int transtable_local_open(struct inode inode, struct file file)
	256	{
	257	struct net_device net_dev = (struct net_device )inode->i_private;
08c36d3e	258	return single_open(file, batadv_tt_local_seq_print_text, net_dev);
c6c8fea2 SE	259	}
	260
	261	static int vis_data_open(struct inode inode, struct file file)
	262	{
	263	struct net_device net_dev = (struct net_device )inode->i_private;
d0f714f4	264	return single_open(file, batadv_vis_seq_print_text, net_dev);
c6c8fea2 SE	265	}
	266
	267	struct bat_debuginfo {
	268	struct attribute attr;
	269	const struct file_operations fops;
	270	};
	271
	272	#define BAT_DEBUGINFO(_name, _mode, _open) \
	273	struct bat_debuginfo bat_debuginfo_##_name = { \
	274	.attr = { .name = __stringify(_name), \
	275	.mode = _mode, }, \
	276	.fops = { .owner = THIS_MODULE, \
	277	.open = _open, \
	278	.read = seq_read, \
	279	.llseek = seq_lseek, \
	280	.release = single_release, \
	281	} \
	282	};
	283
1c280471	284	static BAT_DEBUGINFO(routing_algos, S_IRUGO, bat_algorithms_open);
c6c8fea2 SE	285	static BAT_DEBUGINFO(originators, S_IRUGO, originators_open);
c6c8fea2 SE	286	static BAT_DEBUGINFO(gateways, S_IRUGO, gateways_open);
c6c8fea2	287	static BAT_DEBUGINFO(transtable_global, S_IRUGO, transtable_global_open);
7a5cc242	288	#ifdef CONFIG_BATMAN_ADV_BLA
9bf8e4d4	289	static BAT_DEBUGINFO(bla_claim_table, S_IRUGO, bla_claim_table_open);
7a5cc242	290	#endif
c6c8fea2 SE	291	static BAT_DEBUGINFO(transtable_local, S_IRUGO, transtable_local_open);
	292	static BAT_DEBUGINFO(vis_data, S_IRUGO, vis_data_open);
	293
	294	static struct bat_debuginfo *mesh_debuginfos[] = {
	295	&bat_debuginfo_originators,
	296	&bat_debuginfo_gateways,
c6c8fea2	297	&bat_debuginfo_transtable_global,
7a5cc242	298	#ifdef CONFIG_BATMAN_ADV_BLA
9bf8e4d4	299	&bat_debuginfo_bla_claim_table,
7a5cc242	300	#endif
c6c8fea2 SE	301	&bat_debuginfo_transtable_local,
	302	&bat_debuginfo_vis_data,
	303	NULL,
	304	};
	305
40a072d7	306	void batadv_debugfs_init(void)
c6c8fea2	307	{
1c280471 ML	308	struct bat_debuginfo *bat_debug;
	309	struct dentry *file;
	310
c6c8fea2 SE	311	bat_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL);
	312	if (bat_debugfs == ERR_PTR(-ENODEV))
	313	bat_debugfs = NULL;
1c280471 ML	314
	315	if (!bat_debugfs)
	316	goto out;
	317
	318	bat_debug = &bat_debuginfo_routing_algos;
	319	file = debugfs_create_file(bat_debug->attr.name,
	320	S_IFREG \| bat_debug->attr.mode,
	321	bat_debugfs, NULL, &bat_debug->fops);
	322	if (!file)
	323	pr_err("Can't add debugfs file: %s\n", bat_debug->attr.name);
	324
	325	out:
	326	return;
c6c8fea2 SE	327	}
c6c8fea2 SE	328
40a072d7	329	void batadv_debugfs_destroy(void)
c6c8fea2 SE	330	{
	331	if (bat_debugfs) {
	332	debugfs_remove_recursive(bat_debugfs);
	333	bat_debugfs = NULL;
	334	}
	335	}
	336
40a072d7	337	int batadv_debugfs_add_meshif(struct net_device *dev)
c6c8fea2 SE	338	{
	339	struct bat_priv *bat_priv = netdev_priv(dev);
	340	struct bat_debuginfo **bat_debug;
	341	struct dentry *file;
	342
	343	if (!bat_debugfs)
	344	goto out;
	345
	346	bat_priv->debug_dir = debugfs_create_dir(dev->name, bat_debugfs);
	347	if (!bat_priv->debug_dir)
	348	goto out;
	349
9039dc7e	350	if (batadv_socket_setup(bat_priv) < 0)
5346c35e SE	351	goto rem_attr;
	352
	353	if (debug_log_setup(bat_priv) < 0)
	354	goto rem_attr;
c6c8fea2 SE	355
	356	for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) {
	357	file = debugfs_create_file(((*bat_debug)->attr).name,
	358	S_IFREG \| ((*bat_debug)->attr).mode,
	359	bat_priv->debug_dir,
	360	dev, &(*bat_debug)->fops);
	361	if (!file) {
	362	bat_err(dev, "Can't add debugfs file: %s/%s\n",
	363	dev->name, ((*bat_debug)->attr).name);
	364	goto rem_attr;
	365	}
	366	}
	367
	368	return 0;
	369	rem_attr:
	370	debugfs_remove_recursive(bat_priv->debug_dir);
	371	bat_priv->debug_dir = NULL;
	372	out:
	373	#ifdef CONFIG_DEBUG_FS
	374	return -ENOMEM;
	375	#else
	376	return 0;
	377	#endif /* CONFIG_DEBUG_FS */
	378	}
	379
40a072d7	380	void batadv_debugfs_del_meshif(struct net_device *dev)
c6c8fea2 SE	381	{
	382	struct bat_priv *bat_priv = netdev_priv(dev);
	383
	384	debug_log_cleanup(bat_priv);
	385
	386	if (bat_debugfs) {
	387	debugfs_remove_recursive(bat_priv->debug_dir);
	388	bat_priv->debug_dir = NULL;
	389	}
	390	}