[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"
#include "distributed-arp-table.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

#ifdef CONFIG_BATMAN_ADV_DAT
/**
 * batadv_dat_cache_open - Prepare file handler for reads from dat_chache
 * @inode: inode which was opened
 * @file: file handle to be initialized
 */
static int batadv_dat_cache_open(struct inode *inode, struct file *file)
{
	struct net_device *net_dev = (struct net_device *)inode->i_private;
	return single_open(file, batadv_dat_cache_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,		\
		}					\
};

/* the following attributes are general and therefore they will be directly
 * placed in the BATADV_DEBUGFS_SUBDIR subdirectory of debugfs
 */
static BATADV_DEBUGINFO(routing_algos, S_IRUGO, batadv_algorithms_open);

static struct batadv_debuginfo *batadv_general_debuginfos[] = {
	&batadv_debuginfo_routing_algos,
	NULL,
};

/* The following attributes are per soft interface */
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
#ifdef CONFIG_BATMAN_ADV_DAT
static BATADV_DEBUGINFO(dat_cache, S_IRUGO, batadv_dat_cache_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
#ifdef CONFIG_BATMAN_ADV_DAT
	&batadv_debuginfo_dat_cache,
#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 err;

	for (bat_debug = batadv_general_debuginfos; *bat_debug; ++bat_debug) {
		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 general debugfs file: %s\n",
			       ((*bat_debug)->attr).name);
			goto err;
		}
	}

	return;
err:
	debugfs_remove_recursive(batadv_debugfs);
}

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"
2f1dfbe1	34	#include "distributed-arp-table.h"
c6c8fea2	35
9e466250	36	static struct dentry *batadv_debugfs;
c6c8fea2 SE	37
c6c8fea2 SE	38	#ifdef CONFIG_BATMAN_ADV_DEBUG
347c80f0	39	#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1)
c6c8fea2	40
a8a0a62d SE	41	static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN;
	42
	43	static char batadv_log_char_addr(struct batadv_debug_log debug_log,
	44	size_t idx)
	45	{
	46	return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK];
	47	}
c6c8fea2	48
56303d34	49	static void batadv_emit_log_char(struct batadv_debug_log *debug_log, char c)
c6c8fea2	50	{
a8a0a62d SE	51	char *char_addr;
	52
	53	char_addr = batadv_log_char_addr(debug_log, debug_log->log_end);
	54	*char_addr = c;
c6c8fea2 SE	55	debug_log->log_end++;
c6c8fea2 SE	56
9e466250 SE	57	if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len)
9e466250 SE	58	debug_log->log_start = debug_log->log_end - batadv_log_buff_len;
c6c8fea2 SE	59	}
c6c8fea2 SE	60
d3a547be	61	__printf(2, 3)
56303d34 SE	62	static int batadv_fdebug_log(struct batadv_debug_log *debug_log,
56303d34 SE	63	const char *fmt, ...)
c6c8fea2	64	{
c6c8fea2 SE	65	va_list args;
	66	static char debug_log_buf[256];
	67	char *p;
	68
	69	if (!debug_log)
	70	return 0;
	71
	72	spin_lock_bh(&debug_log->lock);
	73	va_start(args, fmt);
1299bdaa	74	vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args);
c6c8fea2 SE	75	va_end(args);
	76
	77	for (p = debug_log_buf; *p != 0; p++)
9e466250	78	batadv_emit_log_char(debug_log, *p);
c6c8fea2 SE	79
	80	spin_unlock_bh(&debug_log->lock);
	81
	82	wake_up(&debug_log->queue_wait);
	83
	84	return 0;
	85	}
	86
56303d34	87	int batadv_debug_log(struct batadv_priv bat_priv, const char fmt, ...)
c6c8fea2 SE	88	{
	89	va_list args;
	90	char tmp_log_buf[256];
	91
	92	va_start(args, fmt);
	93	vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
9e466250 SE	94	batadv_fdebug_log(bat_priv->debug_log, "[%10u] %s",
9e466250 SE	95	jiffies_to_msecs(jiffies), tmp_log_buf);
c6c8fea2 SE	96	va_end(args);
	97
	98	return 0;
	99	}
	100
9e466250	101	static int batadv_log_open(struct inode inode, struct file file)
c6c8fea2	102	{
bd5b80d5 SE	103	if (!try_module_get(THIS_MODULE))
	104	return -EBUSY;
	105
c6c8fea2 SE	106	nonseekable_open(inode, file);
c6c8fea2 SE	107	file->private_data = inode->i_private;
c6c8fea2 SE	108	return 0;
	109	}
	110
9e466250	111	static int batadv_log_release(struct inode inode, struct file file)
c6c8fea2	112	{
bd5b80d5	113	module_put(THIS_MODULE);
c6c8fea2 SE	114	return 0;
	115	}
	116
0aca2369 SE	117	static int batadv_log_empty(struct batadv_debug_log *debug_log)
	118	{
	119	return !(debug_log->log_start - debug_log->log_end);
	120	}
	121
9e466250 SE	122	static ssize_t batadv_log_read(struct file file, char __user buf,
9e466250 SE	123	size_t count, loff_t *ppos)
c6c8fea2	124	{
56303d34 SE	125	struct batadv_priv *bat_priv = file->private_data;
56303d34 SE	126	struct batadv_debug_log *debug_log = bat_priv->debug_log;
c6c8fea2	127	int error, i = 0;
a8a0a62d	128	char *char_addr;
c6c8fea2 SE	129	char c;
c6c8fea2 SE	130
0aca2369	131	if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log))
c6c8fea2 SE	132	return -EAGAIN;
c6c8fea2 SE	133
16f14b45	134	if (!buf)
c6c8fea2 SE	135	return -EINVAL;
	136
	137	if (count == 0)
	138	return 0;
	139
	140	if (!access_ok(VERIFY_WRITE, buf, count))
	141	return -EFAULT;
	142
	143	error = wait_event_interruptible(debug_log->queue_wait,
0aca2369	144	(!batadv_log_empty(debug_log)));
c6c8fea2 SE	145
	146	if (error)
	147	return error;
	148
	149	spin_lock_bh(&debug_log->lock);
	150
	151	while ((!error) && (i < count) &&
	152	(debug_log->log_start != debug_log->log_end)) {
a8a0a62d SE	153	char_addr = batadv_log_char_addr(debug_log,
	154	debug_log->log_start);
	155	c = *char_addr;
c6c8fea2 SE	156
	157	debug_log->log_start++;
	158
	159	spin_unlock_bh(&debug_log->lock);
	160
	161	error = __put_user(c, buf);
	162
	163	spin_lock_bh(&debug_log->lock);
	164
	165	buf++;
	166	i++;
	167
	168	}
	169
	170	spin_unlock_bh(&debug_log->lock);
	171
	172	if (!error)
	173	return i;
	174
	175	return error;
	176	}
	177
9e466250	178	static unsigned int batadv_log_poll(struct file file, poll_table wait)
c6c8fea2	179	{
56303d34 SE	180	struct batadv_priv *bat_priv = file->private_data;
56303d34 SE	181	struct batadv_debug_log *debug_log = bat_priv->debug_log;
c6c8fea2 SE	182
	183	poll_wait(file, &debug_log->queue_wait, wait);
	184
0aca2369	185	if (!batadv_log_empty(debug_log))
c6c8fea2 SE	186	return POLLIN \| POLLRDNORM;
	187
	188	return 0;
	189	}
	190
9e466250 SE	191	static const struct file_operations batadv_log_fops = {
	192	.open = batadv_log_open,
	193	.release = batadv_log_release,
	194	.read = batadv_log_read,
	195	.poll = batadv_log_poll,
c6c8fea2 SE	196	.llseek = no_llseek,
	197	};
	198
56303d34	199	static int batadv_debug_log_setup(struct batadv_priv *bat_priv)
c6c8fea2 SE	200	{
	201	struct dentry *d;
	202
	203	if (!bat_priv->debug_dir)
	204	goto err;
	205
704509b8	206	bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC);
c6c8fea2 SE	207	if (!bat_priv->debug_log)
	208	goto err;
	209
	210	spin_lock_init(&bat_priv->debug_log->lock);
	211	init_waitqueue_head(&bat_priv->debug_log->queue_wait);
	212
	213	d = debugfs_create_file("log", S_IFREG \| S_IRUSR,
9e466250 SE	214	bat_priv->debug_dir, bat_priv,
9e466250 SE	215	&batadv_log_fops);
5346c35e	216	if (!d)
c6c8fea2 SE	217	goto err;
	218
	219	return 0;
	220
	221	err:
5346c35e	222	return -ENOMEM;
c6c8fea2 SE	223	}
c6c8fea2 SE	224
56303d34	225	static void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
c6c8fea2 SE	226	{
	227	kfree(bat_priv->debug_log);
	228	bat_priv->debug_log = NULL;
	229	}
	230	#else /* CONFIG_BATMAN_ADV_DEBUG */
56303d34	231	static int batadv_debug_log_setup(struct batadv_priv *bat_priv)
c6c8fea2 SE	232	{
	233	bat_priv->debug_log = NULL;
	234	return 0;
	235	}
	236
56303d34	237	static void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
c6c8fea2 SE	238	{
	239	return;
	240	}
	241	#endif
	242
9e466250	243	static int batadv_algorithms_open(struct inode inode, struct file file)
1c280471	244	{
3193e8fd	245	return single_open(file, batadv_algo_seq_print_text, NULL);
1c280471 ML	246	}
1c280471 ML	247
9e466250	248	static int batadv_originators_open(struct inode inode, struct file file)
c6c8fea2 SE	249	{
c6c8fea2 SE	250	struct net_device net_dev = (struct net_device )inode->i_private;
7d211efc	251	return single_open(file, batadv_orig_seq_print_text, net_dev);
c6c8fea2 SE	252	}
c6c8fea2 SE	253
9e466250	254	static int batadv_gateways_open(struct inode inode, struct file file)
c6c8fea2 SE	255	{
c6c8fea2 SE	256	struct net_device net_dev = (struct net_device )inode->i_private;
7cf06bc6	257	return single_open(file, batadv_gw_client_seq_print_text, net_dev);
c6c8fea2 SE	258	}
c6c8fea2 SE	259
9e466250	260	static int batadv_transtable_global_open(struct inode inode, struct file file)
c6c8fea2 SE	261	{
c6c8fea2 SE	262	struct net_device net_dev = (struct net_device )inode->i_private;
08c36d3e	263	return single_open(file, batadv_tt_global_seq_print_text, net_dev);
c6c8fea2 SE	264	}
c6c8fea2 SE	265
7a5cc242	266	#ifdef CONFIG_BATMAN_ADV_BLA
9e466250	267	static int batadv_bla_claim_table_open(struct inode inode, struct file file)
9bf8e4d4 SW	268	{
9bf8e4d4 SW	269	struct net_device net_dev = (struct net_device )inode->i_private;
08adf151 SE	270	return single_open(file, batadv_bla_claim_table_seq_print_text,
08adf151 SE	271	net_dev);
9bf8e4d4	272	}
536a23f1 SW	273
	274	static int batadv_bla_backbone_table_open(struct inode *inode,
	275	struct file *file)
	276	{
	277	struct net_device net_dev = (struct net_device )inode->i_private;
	278	return single_open(file, batadv_bla_backbone_table_seq_print_text,
	279	net_dev);
	280	}
	281
7a5cc242	282	#endif
9bf8e4d4	283
17224474	284	#ifdef CONFIG_BATMAN_ADV_DAT
2f1dfbe1 AQ	285	/**
	286	* batadv_dat_cache_open - Prepare file handler for reads from dat_chache
	287	* @inode: inode which was opened
	288	* @file: file handle to be initialized
	289	*/
	290	static int batadv_dat_cache_open(struct inode inode, struct file file)
	291	{
	292	struct net_device net_dev = (struct net_device )inode->i_private;
	293	return single_open(file, batadv_dat_cache_seq_print_text, net_dev);
	294	}
17224474	295	#endif
2f1dfbe1	296
9e466250	297	static int batadv_transtable_local_open(struct inode inode, struct file file)
c6c8fea2 SE	298	{
c6c8fea2 SE	299	struct net_device net_dev = (struct net_device )inode->i_private;
08c36d3e	300	return single_open(file, batadv_tt_local_seq_print_text, net_dev);
c6c8fea2 SE	301	}
c6c8fea2 SE	302
9e466250	303	static int batadv_vis_data_open(struct inode inode, struct file file)
c6c8fea2 SE	304	{
c6c8fea2 SE	305	struct net_device net_dev = (struct net_device )inode->i_private;
d0f714f4	306	return single_open(file, batadv_vis_seq_print_text, net_dev);
c6c8fea2 SE	307	}
c6c8fea2 SE	308
7f223c0c	309	struct batadv_debuginfo {
c6c8fea2 SE	310	struct attribute attr;
	311	const struct file_operations fops;
	312	};
	313
347c80f0	314	#define BATADV_DEBUGINFO(_name, _mode, _open) \
7f223c0c	315	struct batadv_debuginfo batadv_debuginfo_##_name = { \
9e466250 SE	316	.attr = { .name = __stringify(_name), \
	317	.mode = _mode, }, \
	318	.fops = { .owner = THIS_MODULE, \
	319	.open = _open, \
	320	.read = seq_read, \
	321	.llseek = seq_lseek, \
	322	.release = single_release, \
	323	} \
c6c8fea2 SE	324	};
c6c8fea2 SE	325
637fbd12 AQ	326	/* the following attributes are general and therefore they will be directly
	327	* placed in the BATADV_DEBUGFS_SUBDIR subdirectory of debugfs
	328	*/
347c80f0	329	static BATADV_DEBUGINFO(routing_algos, S_IRUGO, batadv_algorithms_open);
637fbd12 AQ	330
	331	static struct batadv_debuginfo *batadv_general_debuginfos[] = {
	332	&batadv_debuginfo_routing_algos,
	333	NULL,
	334	};
	335
	336	/* The following attributes are per soft interface */
347c80f0 SE	337	static BATADV_DEBUGINFO(originators, S_IRUGO, batadv_originators_open);
	338	static BATADV_DEBUGINFO(gateways, S_IRUGO, batadv_gateways_open);
	339	static BATADV_DEBUGINFO(transtable_global, S_IRUGO,
	340	batadv_transtable_global_open);
7a5cc242	341	#ifdef CONFIG_BATMAN_ADV_BLA
347c80f0	342	static BATADV_DEBUGINFO(bla_claim_table, S_IRUGO, batadv_bla_claim_table_open);
536a23f1 SW	343	static BATADV_DEBUGINFO(bla_backbone_table, S_IRUGO,
536a23f1 SW	344	batadv_bla_backbone_table_open);
7a5cc242	345	#endif
17224474	346	#ifdef CONFIG_BATMAN_ADV_DAT
2f1dfbe1	347	static BATADV_DEBUGINFO(dat_cache, S_IRUGO, batadv_dat_cache_open);
17224474	348	#endif
347c80f0 SE	349	static BATADV_DEBUGINFO(transtable_local, S_IRUGO,
	350	batadv_transtable_local_open);
	351	static BATADV_DEBUGINFO(vis_data, S_IRUGO, batadv_vis_data_open);
c6c8fea2	352
7f223c0c	353	static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
9e466250 SE	354	&batadv_debuginfo_originators,
	355	&batadv_debuginfo_gateways,
	356	&batadv_debuginfo_transtable_global,
7a5cc242	357	#ifdef CONFIG_BATMAN_ADV_BLA
9e466250	358	&batadv_debuginfo_bla_claim_table,
536a23f1	359	&batadv_debuginfo_bla_backbone_table,
7a5cc242	360	#endif
17224474	361	#ifdef CONFIG_BATMAN_ADV_DAT
2f1dfbe1	362	&batadv_debuginfo_dat_cache,
17224474	363	#endif
9e466250 SE	364	&batadv_debuginfo_transtable_local,
9e466250 SE	365	&batadv_debuginfo_vis_data,
c6c8fea2 SE	366	NULL,
	367	};
	368
40a072d7	369	void batadv_debugfs_init(void)
c6c8fea2	370	{
637fbd12	371	struct batadv_debuginfo **bat_debug;
1c280471 ML	372	struct dentry *file;
1c280471 ML	373
54590e4d	374	batadv_debugfs = debugfs_create_dir(BATADV_DEBUGFS_SUBDIR, NULL);
9e466250 SE	375	if (batadv_debugfs == ERR_PTR(-ENODEV))
9e466250 SE	376	batadv_debugfs = NULL;
1c280471	377
9e466250	378	if (!batadv_debugfs)
637fbd12	379	goto err;
1c280471	380
637fbd12 AQ	381	for (bat_debug = batadv_general_debuginfos; *bat_debug; ++bat_debug) {
	382	file = debugfs_create_file(((*bat_debug)->attr).name,
	383	S_IFREG \| ((*bat_debug)->attr).mode,
	384	batadv_debugfs, NULL,
	385	&(*bat_debug)->fops);
	386	if (!file) {
	387	pr_err("Can't add general debugfs file: %s\n",
	388	((*bat_debug)->attr).name);
	389	goto err;
	390	}
	391	}
1c280471	392
1c280471	393	return;
637fbd12 AQ	394	err:
637fbd12 AQ	395	debugfs_remove_recursive(batadv_debugfs);
c6c8fea2 SE	396	}
c6c8fea2 SE	397
40a072d7	398	void batadv_debugfs_destroy(void)
c6c8fea2	399	{
9e466250 SE	400	if (batadv_debugfs) {
	401	debugfs_remove_recursive(batadv_debugfs);
	402	batadv_debugfs = NULL;
c6c8fea2 SE	403	}
	404	}
	405
40a072d7	406	int batadv_debugfs_add_meshif(struct net_device *dev)
c6c8fea2	407	{
56303d34	408	struct batadv_priv *bat_priv = netdev_priv(dev);
7f223c0c	409	struct batadv_debuginfo **bat_debug;
c6c8fea2 SE	410	struct dentry *file;
c6c8fea2 SE	411
9e466250	412	if (!batadv_debugfs)
c6c8fea2 SE	413	goto out;
c6c8fea2 SE	414
9e466250	415	bat_priv->debug_dir = debugfs_create_dir(dev->name, batadv_debugfs);
c6c8fea2 SE	416	if (!bat_priv->debug_dir)
	417	goto out;
	418
9039dc7e	419	if (batadv_socket_setup(bat_priv) < 0)
5346c35e SE	420	goto rem_attr;
5346c35e SE	421
9e466250	422	if (batadv_debug_log_setup(bat_priv) < 0)
5346c35e	423	goto rem_attr;
c6c8fea2	424
9e466250	425	for (bat_debug = batadv_mesh_debuginfos; *bat_debug; ++bat_debug) {
c6c8fea2	426	file = debugfs_create_file(((*bat_debug)->attr).name,
0aca2369 SE	427	S_IFREG \| ((*bat_debug)->attr).mode,
	428	bat_priv->debug_dir,
	429	dev, &(*bat_debug)->fops);
c6c8fea2	430	if (!file) {
3e34819e SE	431	batadv_err(dev, "Can't add debugfs file: %s/%s\n",
3e34819e SE	432	dev->name, ((*bat_debug)->attr).name);
c6c8fea2 SE	433	goto rem_attr;
	434	}
	435	}
	436
	437	return 0;
	438	rem_attr:
	439	debugfs_remove_recursive(bat_priv->debug_dir);
	440	bat_priv->debug_dir = NULL;
	441	out:
	442	#ifdef CONFIG_DEBUG_FS
	443	return -ENOMEM;
	444	#else
	445	return 0;
	446	#endif /* CONFIG_DEBUG_FS */
	447	}
	448
40a072d7	449	void batadv_debugfs_del_meshif(struct net_device *dev)
c6c8fea2	450	{
56303d34	451	struct batadv_priv *bat_priv = netdev_priv(dev);
c6c8fea2	452
9e466250	453	batadv_debug_log_cleanup(bat_priv);
c6c8fea2	454
9e466250	455	if (batadv_debugfs) {
c6c8fea2 SE	456	debugfs_remove_recursive(bat_priv->debug_dir);
	457	bat_priv->debug_dir = NULL;
	458	}
	459	}