diff options
Diffstat (limited to 'net/batman-adv/debugfs.c')
| -rw-r--r-- | net/batman-adv/debugfs.c | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c deleted file mode 100644 index f186a55b23c3..000000000000 --- a/net/batman-adv/debugfs.c +++ /dev/null @@ -1,474 +0,0 @@ -/* 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" -#include "network-coding.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; -}; - -#ifdef CONFIG_BATMAN_ADV_NC -static int batadv_nc_nodes_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, batadv_nc_nodes_seq_print_text, net_dev); -} -#endif - -#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); -#ifdef CONFIG_BATMAN_ADV_NC -static BATADV_DEBUGINFO(nc_nodes, S_IRUGO, batadv_nc_nodes_open); -#endif - -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, -#ifdef CONFIG_BATMAN_ADV_NC - &batadv_debuginfo_nc_nodes, -#endif - 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; - } - } - - if (batadv_nc_init_debugfs(bat_priv) < 0) - 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; - } -} |
