[deliverable/linux.git] / drivers / net / bonding / bond_debugfs.c

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

#include <net/bonding.h>
#include <net/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_MODE(bond) != BOND_MODE_ALB)
		return 0;

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

	spin_lock_bh(&bond->mode_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->mode_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) {
		netdev_warn(bond->dev, "failed to register to debugfs\n");
		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 {
		netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");
		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
1ef8019b DM	6	#include <net/bonding.h>
1ef8019b DM	7	#include <net/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
547942ca	16	/* Show RLB hash table */
caafa842 TI	17	static int bond_debug_rlb_hash_show(struct seq_file m, void v)
	18	{
	19	struct bonding *bond = m->private;
	20	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
	21	struct rlb_client_info *client_info;
	22	u32 hash_index;
	23
01844098	24	if (BOND_MODE(bond) != BOND_MODE_ALB)
caafa842 TI	25	return 0;
	26
	27	seq_printf(m, "SourceIP DestinationIP "
	28	"Destination MAC DEV\n");
	29
4bab16d7	30	spin_lock_bh(&bond->mode_lock);
caafa842	31
e53665c6 JB	32	hash_index = bond_info->rx_hashtbl_used_head;
	33	for (; hash_index != RLB_NULL_INDEX;
	34	hash_index = client_info->used_next) {
caafa842 TI	35	client_info = &(bond_info->rx_hashtbl[hash_index]);
	36	seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
	37	&client_info->ip_src,
	38	&client_info->ip_dst,
	39	&client_info->mac_dst,
	40	client_info->slave->dev->name);
	41	}
	42
4bab16d7	43	spin_unlock_bh(&bond->mode_lock);
caafa842 TI	44
	45	return 0;
	46	}
	47
	48	static int bond_debug_rlb_hash_open(struct inode inode, struct file file)
	49	{
	50	return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
	51	}
	52
	53	static const struct file_operations bond_debug_rlb_hash_fops = {
	54	.owner = THIS_MODULE,
	55	.open = bond_debug_rlb_hash_open,
	56	.read = seq_read,
	57	.llseek = seq_lseek,
	58	.release = single_release,
	59	};
	60
f073c7ca TI	61	void bond_debug_register(struct bonding *bond)
	62	{
	63	if (!bonding_debug_root)
	64	return;
	65
	66	bond->debug_dir =
	67	debugfs_create_dir(bond->dev->name, bonding_debug_root);
	68
	69	if (!bond->debug_dir) {
9ef1cf16	70	netdev_warn(bond->dev, "failed to register to debugfs\n");
f073c7ca TI	71	return;
f073c7ca TI	72	}
caafa842 TI	73
	74	debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
	75	bond, &bond_debug_rlb_hash_fops);
f073c7ca TI	76	}
	77
	78	void bond_debug_unregister(struct bonding *bond)
	79	{
	80	if (!bonding_debug_root)
	81	return;
	82
	83	debugfs_remove_recursive(bond->debug_dir);
	84	}
	85
	86	void bond_debug_reregister(struct bonding *bond)
	87	{
	88	struct dentry *d;
	89
	90	if (!bonding_debug_root)
	91	return;
	92
	93	d = debugfs_rename(bonding_debug_root, bond->debug_dir,
	94	bonding_debug_root, bond->dev->name);
	95	if (d) {
	96	bond->debug_dir = d;
	97	} else {
9ef1cf16	98	netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");
f073c7ca TI	99	bond_debug_unregister(bond);
	100	}
	101	}
	102
	103	void bond_create_debugfs(void)
	104	{
	105	bonding_debug_root = debugfs_create_dir("bonding", NULL);
	106
	107	if (!bonding_debug_root) {
91565ebb	108	pr_warn("Warning: Cannot create bonding directory in debugfs\n");
f073c7ca TI	109	}
	110	}
	111
	112	void bond_destroy_debugfs(void)
	113	{
	114	debugfs_remove_recursive(bonding_debug_root);
	115	bonding_debug_root = NULL;
	116	}
	117
	118
	119	#else /* !CONFIG_DEBUG_FS */
	120
	121	void bond_debug_register(struct bonding *bond)
	122	{
	123	}
	124
	125	void bond_debug_unregister(struct bonding *bond)
	126	{
	127	}
	128
	129	void bond_debug_reregister(struct bonding *bond)
	130	{
	131	}
	132
	133	void bond_create_debugfs(void)
	134	{
	135	}
	136
	137	void bond_destroy_debugfs(void)
	138	{
	139	}
	140
	141	#endif /* CONFIG_DEBUG_FS */