2 * Copyright (C) 2010-2012 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"
35 #include "bridge_loop_avoidance.h"
37 static struct dentry
*bat_debugfs
;
39 #ifdef CONFIG_BATMAN_ADV_DEBUG
40 #define LOG_BUFF_MASK (log_buff_len-1)
41 #define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK])
43 static int log_buff_len
= LOG_BUF_LEN
;
45 static void emit_log_char(struct debug_log
*debug_log
, char c
)
47 LOG_BUFF(debug_log
->log_end
) = c
;
50 if (debug_log
->log_end
- debug_log
->log_start
> log_buff_len
)
51 debug_log
->log_start
= debug_log
->log_end
- log_buff_len
;
55 static int fdebug_log(struct debug_log
*debug_log
, const char *fmt
, ...)
58 static char debug_log_buf
[256];
64 spin_lock_bh(&debug_log
->lock
);
66 vscnprintf(debug_log_buf
, sizeof(debug_log_buf
), fmt
, args
);
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 batadv_debug_log(struct bat_priv
*bat_priv
, const 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_to_msecs(jiffies
), 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
))
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(*bat_priv
->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 bat_algorithms_open(struct inode
*inode
, struct file
*file
)
227 return single_open(file
, bat_algo_seq_print_text
, NULL
);
230 static int originators_open(struct inode
*inode
, struct file
*file
)
232 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
233 return single_open(file
, batadv_orig_seq_print_text
, net_dev
);
236 static int gateways_open(struct inode
*inode
, struct file
*file
)
238 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
239 return single_open(file
, batadv_gw_client_seq_print_text
, net_dev
);
242 static int transtable_global_open(struct inode
*inode
, struct file
*file
)
244 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
245 return single_open(file
, tt_global_seq_print_text
, net_dev
);
248 #ifdef CONFIG_BATMAN_ADV_BLA
249 static int bla_claim_table_open(struct inode
*inode
, struct file
*file
)
251 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
252 return single_open(file
, batadv_bla_claim_table_seq_print_text
,
257 static int transtable_local_open(struct inode
*inode
, struct file
*file
)
259 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
260 return single_open(file
, tt_local_seq_print_text
, net_dev
);
263 static int vis_data_open(struct inode
*inode
, struct file
*file
)
265 struct net_device
*net_dev
= (struct net_device
*)inode
->i_private
;
266 return single_open(file
, vis_seq_print_text
, net_dev
);
269 struct bat_debuginfo
{
270 struct attribute attr
;
271 const struct file_operations fops
;
274 #define BAT_DEBUGINFO(_name, _mode, _open) \
275 struct bat_debuginfo bat_debuginfo_##_name = { \
276 .attr = { .name = __stringify(_name), \
278 .fops = { .owner = THIS_MODULE, \
281 .llseek = seq_lseek, \
282 .release = single_release, \
286 static BAT_DEBUGINFO(routing_algos
, S_IRUGO
, bat_algorithms_open
);
287 static BAT_DEBUGINFO(originators
, S_IRUGO
, originators_open
);
288 static BAT_DEBUGINFO(gateways
, S_IRUGO
, gateways_open
);
289 static BAT_DEBUGINFO(transtable_global
, S_IRUGO
, transtable_global_open
);
290 #ifdef CONFIG_BATMAN_ADV_BLA
291 static BAT_DEBUGINFO(bla_claim_table
, S_IRUGO
, bla_claim_table_open
);
293 static BAT_DEBUGINFO(transtable_local
, S_IRUGO
, transtable_local_open
);
294 static BAT_DEBUGINFO(vis_data
, S_IRUGO
, vis_data_open
);
296 static struct bat_debuginfo
*mesh_debuginfos
[] = {
297 &bat_debuginfo_originators
,
298 &bat_debuginfo_gateways
,
299 &bat_debuginfo_transtable_global
,
300 #ifdef CONFIG_BATMAN_ADV_BLA
301 &bat_debuginfo_bla_claim_table
,
303 &bat_debuginfo_transtable_local
,
304 &bat_debuginfo_vis_data
,
308 void batadv_debugfs_init(void)
310 struct bat_debuginfo
*bat_debug
;
313 bat_debugfs
= debugfs_create_dir(DEBUGFS_BAT_SUBDIR
, NULL
);
314 if (bat_debugfs
== ERR_PTR(-ENODEV
))
320 bat_debug
= &bat_debuginfo_routing_algos
;
321 file
= debugfs_create_file(bat_debug
->attr
.name
,
322 S_IFREG
| bat_debug
->attr
.mode
,
323 bat_debugfs
, NULL
, &bat_debug
->fops
);
325 pr_err("Can't add debugfs file: %s\n", bat_debug
->attr
.name
);
331 void batadv_debugfs_destroy(void)
334 debugfs_remove_recursive(bat_debugfs
);
339 int batadv_debugfs_add_meshif(struct net_device
*dev
)
341 struct bat_priv
*bat_priv
= netdev_priv(dev
);
342 struct bat_debuginfo
**bat_debug
;
348 bat_priv
->debug_dir
= debugfs_create_dir(dev
->name
, bat_debugfs
);
349 if (!bat_priv
->debug_dir
)
352 if (batadv_socket_setup(bat_priv
) < 0)
355 if (debug_log_setup(bat_priv
) < 0)
358 for (bat_debug
= mesh_debuginfos
; *bat_debug
; ++bat_debug
) {
359 file
= debugfs_create_file(((*bat_debug
)->attr
).name
,
360 S_IFREG
| ((*bat_debug
)->attr
).mode
,
362 dev
, &(*bat_debug
)->fops
);
364 bat_err(dev
, "Can't add debugfs file: %s/%s\n",
365 dev
->name
, ((*bat_debug
)->attr
).name
);
372 debugfs_remove_recursive(bat_priv
->debug_dir
);
373 bat_priv
->debug_dir
= NULL
;
375 #ifdef CONFIG_DEBUG_FS
379 #endif /* CONFIG_DEBUG_FS */
382 void batadv_debugfs_del_meshif(struct net_device
*dev
)
384 struct bat_priv
*bat_priv
= netdev_priv(dev
);
386 debug_log_cleanup(bat_priv
);
389 debugfs_remove_recursive(bat_priv
->debug_dir
);
390 bat_priv
->debug_dir
= NULL
;