Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu / drivers / net / bonding / bond_debugfs.c
Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
// SPDX-License-Identifier: GPL-2.0
#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;
}
DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);

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

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

	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 (!IS_ERR(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 */