[linux-2.6-block.git] / drivers / net / bonding / bond_debugfs.c

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/netdevice.h>

#include "bonding.h"
#include "bond_alb.h"

#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS)

#include <linux/debugfs.h>
#include <linux/seq_file.h>

static struct dentry *bonding_debug_root;

/*
 *  Show RLB hash table
 */
static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
{
	struct bonding *bond = m->private;
	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
	struct rlb_client_info *client_info;
	u32 hash_index;

	if (bond->params.mode != BOND_MODE_ALB)
		return 0;

	seq_printf(m, "SourceIP        DestinationIP   "
			"Destination MAC   DEV\n");

	spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));

	hash_index = bond_info->rx_hashtbl_used_head;
	for (; hash_index != RLB_NULL_INDEX;
	     hash_index = client_info->used_next) {
		client_info = &(bond_info->rx_hashtbl[hash_index]);
		seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
			&client_info->ip_src,
			&client_info->ip_dst,
			&client_info->mac_dst,
			client_info->slave->dev->name);
	}

	spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));

	return 0;
}

static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
{
	return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
}

static const struct file_operations bond_debug_rlb_hash_fops = {
	.owner		= THIS_MODULE,
	.open		= bond_debug_rlb_hash_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

void bond_debug_register(struct bonding *bond)
{
	if (!bonding_debug_root)
		return;

	bond->debug_dir =
		debugfs_create_dir(bond->dev->name, bonding_debug_root);

	if (!bond->debug_dir) {
		pr_warn("%s: Warning: failed to register to debugfs\n",
			bond->dev->name);
		return;
	}

	debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
				bond, &bond_debug_rlb_hash_fops);
}

void bond_debug_unregister(struct bonding *bond)
{
	if (!bonding_debug_root)
		return;

	debugfs_remove_recursive(bond->debug_dir);
}

void bond_debug_reregister(struct bonding *bond)
{
	struct dentry *d;

	if (!bonding_debug_root)
		return;

	d = debugfs_rename(bonding_debug_root, bond->debug_dir,
			   bonding_debug_root, bond->dev->name);
	if (d) {
		bond->debug_dir = d;
	} else {
		pr_warn("%s: Warning: failed to reregister, so just unregister old one\n",
			bond->dev->name);
		bond_debug_unregister(bond);
	}
}

void bond_create_debugfs(void)
{
	bonding_debug_root = debugfs_create_dir("bonding", NULL);

	if (!bonding_debug_root) {
		pr_warn("Warning: Cannot create bonding directory in debugfs\n");
	}
}

void bond_destroy_debugfs(void)
{
	debugfs_remove_recursive(bonding_debug_root);
	bonding_debug_root = NULL;
}


#else /* !CONFIG_DEBUG_FS */

void bond_debug_register(struct bonding *bond)
{
}

void bond_debug_unregister(struct bonding *bond)
{
}

void bond_debug_reregister(struct bonding *bond)
{
}

void bond_create_debugfs(void)
{
}

void bond_destroy_debugfs(void)
{
}

#endif /* CONFIG_DEBUG_FS */
Commit	Line	Data
f073c7ca TI	1	#include <linux/kernel.h>
	2	#include <linux/module.h>
	3	#include <linux/device.h>
	4	#include <linux/netdevice.h>
	5
	6	#include "bonding.h"
caafa842	7	#include "bond_alb.h"
f073c7ca	8
96ca7ffe	9	#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS)
f073c7ca TI	10
	11	#include <linux/debugfs.h>
	12	#include <linux/seq_file.h>
	13
	14	static struct dentry *bonding_debug_root;
	15
caafa842 TI	16	/*
	17	* Show RLB hash table
	18	*/
	19	static int bond_debug_rlb_hash_show(struct seq_file m, void v)
	20	{
	21	struct bonding *bond = m->private;
	22	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
	23	struct rlb_client_info *client_info;
	24	u32 hash_index;
	25
	26	if (bond->params.mode != BOND_MODE_ALB)
	27	return 0;
	28
	29	seq_printf(m, "SourceIP DestinationIP "
	30	"Destination MAC DEV\n");
	31
	32	spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
	33
e53665c6 JB	34	hash_index = bond_info->rx_hashtbl_used_head;
	35	for (; hash_index != RLB_NULL_INDEX;
	36	hash_index = client_info->used_next) {
caafa842 TI	37	client_info = &(bond_info->rx_hashtbl[hash_index]);
	38	seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
	39	&client_info->ip_src,
	40	&client_info->ip_dst,
	41	&client_info->mac_dst,
	42	client_info->slave->dev->name);
	43	}
	44
	45	spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
	46
	47	return 0;
	48	}
	49
	50	static int bond_debug_rlb_hash_open(struct inode inode, struct file file)
	51	{
	52	return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
	53	}
	54
	55	static const struct file_operations bond_debug_rlb_hash_fops = {
	56	.owner = THIS_MODULE,
	57	.open = bond_debug_rlb_hash_open,
	58	.read = seq_read,
	59	.llseek = seq_lseek,
	60	.release = single_release,
	61	};
	62
f073c7ca TI	63	void bond_debug_register(struct bonding *bond)
	64	{
	65	if (!bonding_debug_root)
	66	return;
	67
	68	bond->debug_dir =
	69	debugfs_create_dir(bond->dev->name, bonding_debug_root);
	70
	71	if (!bond->debug_dir) {
91565ebb	72	pr_warn("%s: Warning: failed to register to debugfs\n",
f073c7ca TI	73	bond->dev->name);
	74	return;
	75	}
caafa842 TI	76
	77	debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
	78	bond, &bond_debug_rlb_hash_fops);
f073c7ca TI	79	}
	80
	81	void bond_debug_unregister(struct bonding *bond)
	82	{
	83	if (!bonding_debug_root)
	84	return;
	85
	86	debugfs_remove_recursive(bond->debug_dir);
	87	}
	88
	89	void bond_debug_reregister(struct bonding *bond)
	90	{
	91	struct dentry *d;
	92
	93	if (!bonding_debug_root)
	94	return;
	95
	96	d = debugfs_rename(bonding_debug_root, bond->debug_dir,
	97	bonding_debug_root, bond->dev->name);
	98	if (d) {
	99	bond->debug_dir = d;
	100	} else {
91565ebb JP	101	pr_warn("%s: Warning: failed to reregister, so just unregister old one\n",
91565ebb JP	102	bond->dev->name);
f073c7ca TI	103	bond_debug_unregister(bond);
	104	}
	105	}
	106
	107	void bond_create_debugfs(void)
	108	{
	109	bonding_debug_root = debugfs_create_dir("bonding", NULL);
	110
	111	if (!bonding_debug_root) {
91565ebb	112	pr_warn("Warning: Cannot create bonding directory in debugfs\n");
f073c7ca TI	113	}
	114	}
	115
	116	void bond_destroy_debugfs(void)
	117	{
	118	debugfs_remove_recursive(bonding_debug_root);
	119	bonding_debug_root = NULL;
	120	}
	121
	122
	123	#else /* !CONFIG_DEBUG_FS */
	124
	125	void bond_debug_register(struct bonding *bond)
	126	{
	127	}
	128
	129	void bond_debug_unregister(struct bonding *bond)
	130	{
	131	}
	132
	133	void bond_debug_reregister(struct bonding *bond)
	134	{
	135	}
	136
	137	void bond_create_debugfs(void)
	138	{
	139	}
	140
	141	void bond_destroy_debugfs(void)
	142	{
	143	}
	144
	145	#endif /* CONFIG_DEBUG_FS */