2 * Copyright (C) 2010 B.A.T.M.A.N. contributors:
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of version 2 of the GNU General Public
8 * License as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 #include <linux/debugfs.h>
26 #include "bat_debugfs.h"
27 #include "translation-table.h"
28 #include "originator.h"
29 #include "hard-interface.h"
30 #include "gateway_common.h"
31 #include "gateway_client.h"
32 #include "soft-interface.h"
34 #include "icmp_socket.h"
36 static struct dentry
*bat_debugfs
;
38 #ifdef CONFIG_BATMAN_ADV_DEBUG
39 #define LOG_BUFF_MASK (log_buff_len-1)
40 #define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK])
42 static int log_buff_len
= LOG_BUF_LEN
;
44 static void emit_log_char(struct debug_log
*debug_log
, char c
)
46 LOG_BUFF(debug_log
->log_end
) = c
;
49 if (debug_log
->log_end
- debug_log
->log_start
> log_buff_len
)
50 debug_log
->log_start
= debug_log
->log_end
- log_buff_len
;
53 static int fdebug_log(struct debug_log
*debug_log
, char *fmt
, ...)
57 static char debug_log_buf
[256];
63 spin_lock_bh(&debug_log
->lock
);
65 printed_len
= vscnprintf(debug_log_buf
, sizeof(debug_log_buf
),
69 for (p
= debug_log_buf
; *p
!= 0; p
++)
70 emit_log_char(debug_log
, *p
);
72 spin_unlock_bh(&debug_log
->lock
);
74 wake_up(&debug_log
->queue_wait
);
79 int debug_log(struct bat_priv
*bat_priv
, char *fmt
, ...)
82 char tmp_log_buf
[256];
85 vscnprintf(tmp_log_buf
, sizeof(tmp_log_buf
), fmt
, args
);
86 fdebug_log(bat_priv
->debug_log
, "[%10u] %s",
87 (jiffies
/ HZ
), tmp_log_buf
);
93 static int log_open(struct inode
*inode
, struct file
*file
)
95 nonseekable_open(inode
, file
);
96 file
->private_data
= inode
->i_private
;
101 static int log_release(struct inode
*inode
, struct file
*file
)
107 static ssize_t
log_read(struct file
*file
, char __user
*buf
,
108 size_t count
, loff_t
*ppos
)
110 struct bat_priv
*bat_priv
= file
->private_data
;
111 struct debug_log
*debug_log
= bat_priv
->debug_log
;
115 if ((file
->f_flags
& O_NONBLOCK
) &&
116 !(debug_log
->log_end
- debug_log
->log_start
))
119 if ((!buf
) || (count
< 0))
125 if (!access_ok(VERIFY_WRITE
, buf
, count
))
128 error
= wait_event_interruptible(debug_log
->queue_wait
,
129 (debug_log
->log_start
- debug_log
->log_end
));
134 spin_lock_bh(&debug_log
->lock
);
136 while ((!error
) && (i
< count
) &&
137 (debug_log
->log_start
!= debug_log
->log_end
)) {
138 c
= LOG_BUFF(debug_log
->log_start
);
140 debug_log
->log_start
++;
142 spin_unlock_bh(&debug_log
->lock
);
144 error
= __put_user(c
, buf
);
146 spin_lock_bh(&debug_log
->lock
);
153 spin_unlock_bh(&debug_log
->lock
);
161 static unsigned int log_poll(struct file
*file
, poll_table
*wait
)
163 struct bat_priv
*bat_priv
= file
->private_data
;
164 struct debug_log
*debug_log
= bat_priv
->debug_log
;
166 poll_wait(file
, &debug_log
->queue_wait
, wait
);
168 if (debug_log
->log_end
- debug_log
->log_start
)
169 return POLLIN
| POLLRDNORM
;
174 static const struct file_operations log_fops
= {
176 .release
= log_release
,
182 static int debug_log_setup(struct bat_priv
*bat_priv
)
186 if (!bat_priv
->debug_dir
)
189 bat_priv
->debug_log
= kzalloc(sizeof(struct debug_log
), GFP_ATOMIC
);
190 if (!bat_priv
->debug_log
)
193 spin_lock_init(&bat_priv
->debug_log
->lock
);
194 init_waitqueue_head(&bat_priv
->debug_log
->queue_wait
);
196 d
= debugfs_create_file("log", S_IFREG
| S_IRUSR
,
197 bat_priv
->debug_dir
, bat_priv
, &log_fops
);
207 static void debug_log_cleanup(struct bat_priv
*bat_priv
)
209 kfree(bat_priv
->debug_log
);
210 bat_priv
->debug_log
= NULL
;
212 #else /* CONFIG_BATMAN_ADV_DEBUG */
213 static int debug_log_setup(struct bat_priv
*bat_priv
)
215 bat_priv
->debug_log
= NULL
;
219 static void debug_log_cleanup(struct bat_priv
*bat_priv
)
225 static int originators_open(struct inode
*inode
, struct file
*file
)
227 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
228 return single_open(file
, orig_seq_print_text
, net_dev
);
231 static int gateways_open(struct inode
*inode
, struct file
*file
)
233 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
234 return single_open(file
, gw_client_seq_print_text
, net_dev
);
237 static int softif_neigh_open(struct inode
*inode
, struct file
*file
)
239 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
240 return single_open(file
, softif_neigh_seq_print_text
, net_dev
);
243 static int transtable_global_open(struct inode
*inode
, struct file
*file
)
245 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
246 return single_open(file
, hna_global_seq_print_text
, net_dev
);
249 static int transtable_local_open(struct inode
*inode
, struct file
*file
)
251 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
252 return single_open(file
, hna_local_seq_print_text
, net_dev
);
255 static int vis_data_open(struct inode
*inode
, struct file
*file
)
257 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
258 return single_open(file
, vis_seq_print_text
, net_dev
);
261 struct bat_debuginfo
{
262 struct attribute attr
;
263 const struct file_operations fops
;
266 #define BAT_DEBUGINFO(_name, _mode, _open) \
267 struct bat_debuginfo bat_debuginfo_##_name = { \
268 .attr = { .name = __stringify(_name), \
270 .fops = { .owner = THIS_MODULE, \
273 .llseek = seq_lseek, \
274 .release = single_release, \
278 static BAT_DEBUGINFO(originators
, S_IRUGO
, originators_open
);
279 static BAT_DEBUGINFO(gateways
, S_IRUGO
, gateways_open
);
280 static BAT_DEBUGINFO(softif_neigh
, S_IRUGO
, softif_neigh_open
);
281 static BAT_DEBUGINFO(transtable_global
, S_IRUGO
, transtable_global_open
);
282 static BAT_DEBUGINFO(transtable_local
, S_IRUGO
, transtable_local_open
);
283 static BAT_DEBUGINFO(vis_data
, S_IRUGO
, vis_data_open
);
285 static struct bat_debuginfo
*mesh_debuginfos
[] = {
286 &bat_debuginfo_originators
,
287 &bat_debuginfo_gateways
,
288 &bat_debuginfo_softif_neigh
,
289 &bat_debuginfo_transtable_global
,
290 &bat_debuginfo_transtable_local
,
291 &bat_debuginfo_vis_data
,
295 void debugfs_init(void)
297 bat_debugfs
= debugfs_create_dir(DEBUGFS_BAT_SUBDIR
, NULL
);
298 if (bat_debugfs
== ERR_PTR(-ENODEV
))
302 void debugfs_destroy(void)
305 debugfs_remove_recursive(bat_debugfs
);
310 int debugfs_add_meshif(struct net_device
*dev
)
312 struct bat_priv
*bat_priv
= netdev_priv(dev
);
313 struct bat_debuginfo
**bat_debug
;
319 bat_priv
->debug_dir
= debugfs_create_dir(dev
->name
, bat_debugfs
);
320 if (!bat_priv
->debug_dir
)
323 bat_socket_setup(bat_priv
);
324 debug_log_setup(bat_priv
);
326 for (bat_debug
= mesh_debuginfos
; *bat_debug
; ++bat_debug
) {
327 file
= debugfs_create_file(((*bat_debug
)->attr
).name
,
328 S_IFREG
| ((*bat_debug
)->attr
).mode
,
330 dev
, &(*bat_debug
)->fops
);
332 bat_err(dev
, "Can't add debugfs file: %s/%s\n",
333 dev
->name
, ((*bat_debug
)->attr
).name
);
340 debugfs_remove_recursive(bat_priv
->debug_dir
);
341 bat_priv
->debug_dir
= NULL
;
343 #ifdef CONFIG_DEBUG_FS
347 #endif /* CONFIG_DEBUG_FS */
350 void debugfs_del_meshif(struct net_device
*dev
)
352 struct bat_priv
*bat_priv
= netdev_priv(dev
);
354 debug_log_cleanup(bat_priv
);
357 debugfs_remove_recursive(bat_priv
->debug_dir
);
358 bat_priv
->debug_dir
= NULL
;