[deliverable/linux.git] / net / batman-adv / 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 "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 *batadv_debugfs;

#ifdef CONFIG_BATMAN_ADV_DEBUG
#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1)

static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN;

static char *batadv_log_char_addr(struct batadv_debug_log *debug_log,
				  size_t idx)
{
	return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK];
}

static void batadv_emit_log_char(struct batadv_debug_log *debug_log, char c)
{
	char *char_addr;

	char_addr = batadv_log_char_addr(debug_log, debug_log->log_end);
	*char_addr = c;
	debug_log->log_end++;

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

__printf(2, 3)
static int batadv_fdebug_log(struct batadv_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++)
		batadv_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 batadv_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);
	batadv_fdebug_log(bat_priv->debug_log, "[%10u] %s",
			  jiffies_to_msecs(jiffies), tmp_log_buf);
	va_end(args);

	return 0;
}

static int batadv_log_open(struct inode *inode, struct file *file)
{
	if (!try_module_get(THIS_MODULE))
		return -EBUSY;

	nonseekable_open(inode, file);
	file->private_data = inode->i_private;
	return 0;
}

static int batadv_log_release(struct inode *inode, struct file *file)
{
	module_put(THIS_MODULE);
	return 0;
}

static int batadv_log_empty(struct batadv_debug_log *debug_log)
{
	return !(debug_log->log_start - debug_log->log_end);
}

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

	if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log))
		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,
					 (!batadv_log_empty(debug_log)));

	if (error)
		return error;

	spin_lock_bh(&debug_log->lock);

	while ((!error) && (i < count) &&
	       (debug_log->log_start != debug_log->log_end)) {
		char_addr = batadv_log_char_addr(debug_log,
						 debug_log->log_start);
		c = *char_addr;

		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 batadv_log_poll(struct file *file, poll_table *wait)
{
	struct batadv_priv *bat_priv = file->private_data;
	struct batadv_debug_log *debug_log = bat_priv->debug_log;

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

	if (!batadv_log_empty(debug_log))
		return POLLIN | POLLRDNORM;

	return 0;
}

static const struct file_operations batadv_log_fops = {
	.open           = batadv_log_open,
	.release        = batadv_log_release,
	.read           = batadv_log_read,
	.poll           = batadv_log_poll,
	.llseek         = no_llseek,
};

static int batadv_debug_log_setup(struct batadv_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,
				&batadv_log_fops);
	if (!d)
		goto err;

	return 0;

err:
	return -ENOMEM;
}

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

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

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

static int batadv_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 batadv_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 batadv_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 batadv_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);
}

static int batadv_bla_backbone_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_backbone_table_seq_print_text,
			   net_dev);
}

#endif

static int batadv_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 batadv_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 batadv_debuginfo {
	struct attribute attr;
	const struct file_operations fops;
};

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

static BATADV_DEBUGINFO(routing_algos, S_IRUGO, batadv_algorithms_open);
static BATADV_DEBUGINFO(originators, S_IRUGO, batadv_originators_open);
static BATADV_DEBUGINFO(gateways, S_IRUGO, batadv_gateways_open);
static BATADV_DEBUGINFO(transtable_global, S_IRUGO,
			batadv_transtable_global_open);
#ifdef CONFIG_BATMAN_ADV_BLA
static BATADV_DEBUGINFO(bla_claim_table, S_IRUGO, batadv_bla_claim_table_open);
static BATADV_DEBUGINFO(bla_backbone_table, S_IRUGO,
			batadv_bla_backbone_table_open);
#endif
static BATADV_DEBUGINFO(transtable_local, S_IRUGO,
			batadv_transtable_local_open);
static BATADV_DEBUGINFO(vis_data, S_IRUGO, batadv_vis_data_open);

static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
	&batadv_debuginfo_originators,
	&batadv_debuginfo_gateways,
	&batadv_debuginfo_transtable_global,
#ifdef CONFIG_BATMAN_ADV_BLA
	&batadv_debuginfo_bla_claim_table,
	&batadv_debuginfo_bla_backbone_table,
#endif
	&batadv_debuginfo_transtable_local,
	&batadv_debuginfo_vis_data,
	NULL,
};

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

	batadv_debugfs = debugfs_create_dir(BATADV_DEBUGFS_SUBDIR, NULL);
	if (batadv_debugfs == ERR_PTR(-ENODEV))
		batadv_debugfs = NULL;

	if (!batadv_debugfs)
		goto out;

	bat_debug = &batadv_debuginfo_routing_algos;
	file = debugfs_create_file(bat_debug->attr.name,
				   S_IFREG | bat_debug->attr.mode,
				   batadv_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 (batadv_debugfs) {
		debugfs_remove_recursive(batadv_debugfs);
		batadv_debugfs = NULL;
	}
}

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

	if (!batadv_debugfs)
		goto out;

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

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

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

	for (bat_debug = batadv_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) {
			batadv_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 batadv_priv *bat_priv = netdev_priv(dev);

	batadv_debug_log_cleanup(bat_priv);

	if (batadv_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
b706b13b	24	#include "debugfs.h"
c6c8fea2 SE	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	34
9e466250	35	static struct dentry *batadv_debugfs;
c6c8fea2 SE	36
c6c8fea2 SE	37	#ifdef CONFIG_BATMAN_ADV_DEBUG
347c80f0	38	#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1)
c6c8fea2	39
a8a0a62d SE	40	static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN;
	41
	42	static char batadv_log_char_addr(struct batadv_debug_log debug_log,
	43	size_t idx)
	44	{
	45	return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK];
	46	}
c6c8fea2	47
56303d34	48	static void batadv_emit_log_char(struct batadv_debug_log *debug_log, char c)
c6c8fea2	49	{
a8a0a62d SE	50	char *char_addr;
	51
	52	char_addr = batadv_log_char_addr(debug_log, debug_log->log_end);
	53	*char_addr = c;
c6c8fea2 SE	54	debug_log->log_end++;
c6c8fea2 SE	55
9e466250 SE	56	if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len)
9e466250 SE	57	debug_log->log_start = debug_log->log_end - batadv_log_buff_len;
c6c8fea2 SE	58	}
c6c8fea2 SE	59
d3a547be	60	__printf(2, 3)
56303d34 SE	61	static int batadv_fdebug_log(struct batadv_debug_log *debug_log,
56303d34 SE	62	const char *fmt, ...)
c6c8fea2	63	{
c6c8fea2 SE	64	va_list args;
	65	static char debug_log_buf[256];
	66	char *p;
	67
	68	if (!debug_log)
	69	return 0;
	70
	71	spin_lock_bh(&debug_log->lock);
	72	va_start(args, fmt);
1299bdaa	73	vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args);
c6c8fea2 SE	74	va_end(args);
	75
	76	for (p = debug_log_buf; *p != 0; p++)
9e466250	77	batadv_emit_log_char(debug_log, *p);
c6c8fea2 SE	78
	79	spin_unlock_bh(&debug_log->lock);
	80
	81	wake_up(&debug_log->queue_wait);
	82
	83	return 0;
	84	}
	85
56303d34	86	int batadv_debug_log(struct batadv_priv bat_priv, const char fmt, ...)
c6c8fea2 SE	87	{
	88	va_list args;
	89	char tmp_log_buf[256];
	90
	91	va_start(args, fmt);
	92	vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
9e466250 SE	93	batadv_fdebug_log(bat_priv->debug_log, "[%10u] %s",
9e466250 SE	94	jiffies_to_msecs(jiffies), tmp_log_buf);
c6c8fea2 SE	95	va_end(args);
	96
	97	return 0;
	98	}
	99
9e466250	100	static int batadv_log_open(struct inode inode, struct file file)
c6c8fea2	101	{
bd5b80d5 SE	102	if (!try_module_get(THIS_MODULE))
	103	return -EBUSY;
	104
c6c8fea2 SE	105	nonseekable_open(inode, file);
c6c8fea2 SE	106	file->private_data = inode->i_private;
c6c8fea2 SE	107	return 0;
	108	}
	109
9e466250	110	static int batadv_log_release(struct inode inode, struct file file)
c6c8fea2	111	{
bd5b80d5	112	module_put(THIS_MODULE);
c6c8fea2 SE	113	return 0;
	114	}
	115
0aca2369 SE	116	static int batadv_log_empty(struct batadv_debug_log *debug_log)
	117	{
	118	return !(debug_log->log_start - debug_log->log_end);
	119	}
	120
9e466250 SE	121	static ssize_t batadv_log_read(struct file file, char __user buf,
9e466250 SE	122	size_t count, loff_t *ppos)
c6c8fea2	123	{
56303d34 SE	124	struct batadv_priv *bat_priv = file->private_data;
56303d34 SE	125	struct batadv_debug_log *debug_log = bat_priv->debug_log;
c6c8fea2	126	int error, i = 0;
a8a0a62d	127	char *char_addr;
c6c8fea2 SE	128	char c;
c6c8fea2 SE	129
0aca2369	130	if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log))
c6c8fea2 SE	131	return -EAGAIN;
c6c8fea2 SE	132
16f14b45	133	if (!buf)
c6c8fea2 SE	134	return -EINVAL;
	135
	136	if (count == 0)
	137	return 0;
	138
	139	if (!access_ok(VERIFY_WRITE, buf, count))
	140	return -EFAULT;
	141
	142	error = wait_event_interruptible(debug_log->queue_wait,
0aca2369	143	(!batadv_log_empty(debug_log)));
c6c8fea2 SE	144
	145	if (error)
	146	return error;
	147
	148	spin_lock_bh(&debug_log->lock);
	149
	150	while ((!error) && (i < count) &&
	151	(debug_log->log_start != debug_log->log_end)) {
a8a0a62d SE	152	char_addr = batadv_log_char_addr(debug_log,
	153	debug_log->log_start);
	154	c = *char_addr;
c6c8fea2 SE	155
	156	debug_log->log_start++;
	157
	158	spin_unlock_bh(&debug_log->lock);
	159
	160	error = __put_user(c, buf);
	161
	162	spin_lock_bh(&debug_log->lock);
	163
	164	buf++;
	165	i++;
	166
	167	}
	168
	169	spin_unlock_bh(&debug_log->lock);
	170
	171	if (!error)
	172	return i;
	173
	174	return error;
	175	}
	176
9e466250	177	static unsigned int batadv_log_poll(struct file file, poll_table wait)
c6c8fea2	178	{
56303d34 SE	179	struct batadv_priv *bat_priv = file->private_data;
56303d34 SE	180	struct batadv_debug_log *debug_log = bat_priv->debug_log;
c6c8fea2 SE	181
	182	poll_wait(file, &debug_log->queue_wait, wait);
	183
0aca2369	184	if (!batadv_log_empty(debug_log))
c6c8fea2 SE	185	return POLLIN \| POLLRDNORM;
	186
	187	return 0;
	188	}
	189
9e466250 SE	190	static const struct file_operations batadv_log_fops = {
	191	.open = batadv_log_open,
	192	.release = batadv_log_release,
	193	.read = batadv_log_read,
	194	.poll = batadv_log_poll,
c6c8fea2 SE	195	.llseek = no_llseek,
	196	};
	197
56303d34	198	static int batadv_debug_log_setup(struct batadv_priv *bat_priv)
c6c8fea2 SE	199	{
	200	struct dentry *d;
	201
	202	if (!bat_priv->debug_dir)
	203	goto err;
	204
704509b8	205	bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC);
c6c8fea2 SE	206	if (!bat_priv->debug_log)
	207	goto err;
	208
	209	spin_lock_init(&bat_priv->debug_log->lock);
	210	init_waitqueue_head(&bat_priv->debug_log->queue_wait);
	211
	212	d = debugfs_create_file("log", S_IFREG \| S_IRUSR,
9e466250 SE	213	bat_priv->debug_dir, bat_priv,
9e466250 SE	214	&batadv_log_fops);
5346c35e	215	if (!d)
c6c8fea2 SE	216	goto err;
	217
	218	return 0;
	219
	220	err:
5346c35e	221	return -ENOMEM;
c6c8fea2 SE	222	}
c6c8fea2 SE	223
56303d34	224	static void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
c6c8fea2 SE	225	{
	226	kfree(bat_priv->debug_log);
	227	bat_priv->debug_log = NULL;
	228	}
	229	#else /* CONFIG_BATMAN_ADV_DEBUG */
56303d34	230	static int batadv_debug_log_setup(struct batadv_priv *bat_priv)
c6c8fea2 SE	231	{
	232	bat_priv->debug_log = NULL;
	233	return 0;
	234	}
	235
56303d34	236	static void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
c6c8fea2 SE	237	{
	238	return;
	239	}
	240	#endif
	241
9e466250	242	static int batadv_algorithms_open(struct inode inode, struct file file)
1c280471	243	{
3193e8fd	244	return single_open(file, batadv_algo_seq_print_text, NULL);
1c280471 ML	245	}
1c280471 ML	246
9e466250	247	static int batadv_originators_open(struct inode inode, struct file file)
c6c8fea2 SE	248	{
c6c8fea2 SE	249	struct net_device net_dev = (struct net_device )inode->i_private;
7d211efc	250	return single_open(file, batadv_orig_seq_print_text, net_dev);
c6c8fea2 SE	251	}
c6c8fea2 SE	252
9e466250	253	static int batadv_gateways_open(struct inode inode, struct file file)
c6c8fea2 SE	254	{
c6c8fea2 SE	255	struct net_device net_dev = (struct net_device )inode->i_private;
7cf06bc6	256	return single_open(file, batadv_gw_client_seq_print_text, net_dev);
c6c8fea2 SE	257	}
c6c8fea2 SE	258
9e466250	259	static int batadv_transtable_global_open(struct inode inode, struct file file)
c6c8fea2 SE	260	{
c6c8fea2 SE	261	struct net_device net_dev = (struct net_device )inode->i_private;
08c36d3e	262	return single_open(file, batadv_tt_global_seq_print_text, net_dev);
c6c8fea2 SE	263	}
c6c8fea2 SE	264
7a5cc242	265	#ifdef CONFIG_BATMAN_ADV_BLA
9e466250	266	static int batadv_bla_claim_table_open(struct inode inode, struct file file)
9bf8e4d4 SW	267	{
9bf8e4d4 SW	268	struct net_device net_dev = (struct net_device )inode->i_private;
08adf151 SE	269	return single_open(file, batadv_bla_claim_table_seq_print_text,
08adf151 SE	270	net_dev);
9bf8e4d4	271	}
536a23f1 SW	272
	273	static int batadv_bla_backbone_table_open(struct inode *inode,
	274	struct file *file)
	275	{
	276	struct net_device net_dev = (struct net_device )inode->i_private;
	277	return single_open(file, batadv_bla_backbone_table_seq_print_text,
	278	net_dev);
	279	}
	280
7a5cc242	281	#endif
9bf8e4d4	282
9e466250	283	static int batadv_transtable_local_open(struct inode inode, struct file file)
c6c8fea2 SE	284	{
c6c8fea2 SE	285	struct net_device net_dev = (struct net_device )inode->i_private;
08c36d3e	286	return single_open(file, batadv_tt_local_seq_print_text, net_dev);
c6c8fea2 SE	287	}
c6c8fea2 SE	288
9e466250	289	static int batadv_vis_data_open(struct inode inode, struct file file)
c6c8fea2 SE	290	{
c6c8fea2 SE	291	struct net_device net_dev = (struct net_device )inode->i_private;
d0f714f4	292	return single_open(file, batadv_vis_seq_print_text, net_dev);
c6c8fea2 SE	293	}
c6c8fea2 SE	294
7f223c0c	295	struct batadv_debuginfo {
c6c8fea2 SE	296	struct attribute attr;
	297	const struct file_operations fops;
	298	};
	299
347c80f0	300	#define BATADV_DEBUGINFO(_name, _mode, _open) \
7f223c0c	301	struct batadv_debuginfo batadv_debuginfo_##_name = { \
9e466250 SE	302	.attr = { .name = __stringify(_name), \
	303	.mode = _mode, }, \
	304	.fops = { .owner = THIS_MODULE, \
	305	.open = _open, \
	306	.read = seq_read, \
	307	.llseek = seq_lseek, \
	308	.release = single_release, \
	309	} \
c6c8fea2 SE	310	};
c6c8fea2 SE	311
347c80f0 SE	312	static BATADV_DEBUGINFO(routing_algos, S_IRUGO, batadv_algorithms_open);
	313	static BATADV_DEBUGINFO(originators, S_IRUGO, batadv_originators_open);
	314	static BATADV_DEBUGINFO(gateways, S_IRUGO, batadv_gateways_open);
	315	static BATADV_DEBUGINFO(transtable_global, S_IRUGO,
	316	batadv_transtable_global_open);
7a5cc242	317	#ifdef CONFIG_BATMAN_ADV_BLA
347c80f0	318	static BATADV_DEBUGINFO(bla_claim_table, S_IRUGO, batadv_bla_claim_table_open);
536a23f1 SW	319	static BATADV_DEBUGINFO(bla_backbone_table, S_IRUGO,
536a23f1 SW	320	batadv_bla_backbone_table_open);
7a5cc242	321	#endif
347c80f0 SE	322	static BATADV_DEBUGINFO(transtable_local, S_IRUGO,
	323	batadv_transtable_local_open);
	324	static BATADV_DEBUGINFO(vis_data, S_IRUGO, batadv_vis_data_open);
c6c8fea2	325
7f223c0c	326	static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
9e466250 SE	327	&batadv_debuginfo_originators,
	328	&batadv_debuginfo_gateways,
	329	&batadv_debuginfo_transtable_global,
7a5cc242	330	#ifdef CONFIG_BATMAN_ADV_BLA
9e466250	331	&batadv_debuginfo_bla_claim_table,
536a23f1	332	&batadv_debuginfo_bla_backbone_table,
7a5cc242	333	#endif
9e466250 SE	334	&batadv_debuginfo_transtable_local,
9e466250 SE	335	&batadv_debuginfo_vis_data,
c6c8fea2 SE	336	NULL,
	337	};
	338
40a072d7	339	void batadv_debugfs_init(void)
c6c8fea2	340	{
7f223c0c	341	struct batadv_debuginfo *bat_debug;
1c280471 ML	342	struct dentry *file;
1c280471 ML	343
54590e4d	344	batadv_debugfs = debugfs_create_dir(BATADV_DEBUGFS_SUBDIR, NULL);
9e466250 SE	345	if (batadv_debugfs == ERR_PTR(-ENODEV))
9e466250 SE	346	batadv_debugfs = NULL;
1c280471	347
9e466250	348	if (!batadv_debugfs)
1c280471 ML	349	goto out;
1c280471 ML	350
9e466250	351	bat_debug = &batadv_debuginfo_routing_algos;
1c280471 ML	352	file = debugfs_create_file(bat_debug->attr.name,
1c280471 ML	353	S_IFREG \| bat_debug->attr.mode,
9e466250	354	batadv_debugfs, NULL, &bat_debug->fops);
1c280471 ML	355	if (!file)
	356	pr_err("Can't add debugfs file: %s\n", bat_debug->attr.name);
	357
	358	out:
	359	return;
c6c8fea2 SE	360	}
c6c8fea2 SE	361
40a072d7	362	void batadv_debugfs_destroy(void)
c6c8fea2	363	{
9e466250 SE	364	if (batadv_debugfs) {
	365	debugfs_remove_recursive(batadv_debugfs);
	366	batadv_debugfs = NULL;
c6c8fea2 SE	367	}
	368	}
	369
40a072d7	370	int batadv_debugfs_add_meshif(struct net_device *dev)
c6c8fea2	371	{
56303d34	372	struct batadv_priv *bat_priv = netdev_priv(dev);
7f223c0c	373	struct batadv_debuginfo **bat_debug;
c6c8fea2 SE	374	struct dentry *file;
c6c8fea2 SE	375
9e466250	376	if (!batadv_debugfs)
c6c8fea2 SE	377	goto out;
c6c8fea2 SE	378
9e466250	379	bat_priv->debug_dir = debugfs_create_dir(dev->name, batadv_debugfs);
c6c8fea2 SE	380	if (!bat_priv->debug_dir)
	381	goto out;
	382
9039dc7e	383	if (batadv_socket_setup(bat_priv) < 0)
5346c35e SE	384	goto rem_attr;
5346c35e SE	385
9e466250	386	if (batadv_debug_log_setup(bat_priv) < 0)
5346c35e	387	goto rem_attr;
c6c8fea2	388
9e466250	389	for (bat_debug = batadv_mesh_debuginfos; *bat_debug; ++bat_debug) {
c6c8fea2	390	file = debugfs_create_file(((*bat_debug)->attr).name,
0aca2369 SE	391	S_IFREG \| ((*bat_debug)->attr).mode,
	392	bat_priv->debug_dir,
	393	dev, &(*bat_debug)->fops);
c6c8fea2	394	if (!file) {
3e34819e SE	395	batadv_err(dev, "Can't add debugfs file: %s/%s\n",
3e34819e SE	396	dev->name, ((*bat_debug)->attr).name);
c6c8fea2 SE	397	goto rem_attr;
	398	}
	399	}
	400
	401	return 0;
	402	rem_attr:
	403	debugfs_remove_recursive(bat_priv->debug_dir);
	404	bat_priv->debug_dir = NULL;
	405	out:
	406	#ifdef CONFIG_DEBUG_FS
	407	return -ENOMEM;
	408	#else
	409	return 0;
	410	#endif /* CONFIG_DEBUG_FS */
	411	}
	412
40a072d7	413	void batadv_debugfs_del_meshif(struct net_device *dev)
c6c8fea2	414	{
56303d34	415	struct batadv_priv *bat_priv = netdev_priv(dev);
c6c8fea2	416
9e466250	417	batadv_debug_log_cleanup(bat_priv);
c6c8fea2	418
9e466250	419	if (batadv_debugfs) {
c6c8fea2 SE	420	debugfs_remove_recursive(bat_priv->debug_dir);
	421	bat_priv->debug_dir = NULL;
	422	}
	423	}