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// 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;
}
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 */
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