457 lines
11 KiB
C
457 lines
11 KiB
C
/* Copyright (C) 2010-2013 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_priv_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_priv_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_priv_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_priv_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_priv_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_priv_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)
|
|
{
|
|
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)
|
|
{
|
|
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;
|
|
}
|
|
}
|