1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/kernel.h>
3 #include <linux/module.h>
4 #include <linux/device.h>
5 #include <linux/netdevice.h>
7 #include <net/bonding.h>
8 #include <net/bond_alb.h>
10 #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS)
12 #include <linux/debugfs.h>
13 #include <linux/seq_file.h>
15 static struct dentry *bonding_debug_root;
17 /* Show RLB hash table */
18 static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
20 struct bonding *bond = m->private;
21 struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
22 struct rlb_client_info *client_info;
25 if (BOND_MODE(bond) != BOND_MODE_ALB)
28 seq_printf(m, "SourceIP DestinationIP "
29 "Destination MAC DEV\n");
31 spin_lock_bh(&bond->mode_lock);
33 hash_index = bond_info->rx_hashtbl_used_head;
34 for (; hash_index != RLB_NULL_INDEX;
35 hash_index = client_info->used_next) {
36 client_info = &(bond_info->rx_hashtbl[hash_index]);
37 seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
40 &client_info->mac_dst,
41 client_info->slave->dev->name);
44 spin_unlock_bh(&bond->mode_lock);
48 DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);
50 void bond_debug_register(struct bonding *bond)
52 if (!bonding_debug_root)
56 debugfs_create_dir(bond->dev->name, bonding_debug_root);
58 debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
59 bond, &bond_debug_rlb_hash_fops);
62 void bond_debug_unregister(struct bonding *bond)
64 if (!bonding_debug_root)
67 debugfs_remove_recursive(bond->debug_dir);
70 void bond_debug_reregister(struct bonding *bond)
74 if (!bonding_debug_root)
77 d = debugfs_rename(bonding_debug_root, bond->debug_dir,
78 bonding_debug_root, bond->dev->name);
82 netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");
83 bond_debug_unregister(bond);
87 void bond_create_debugfs(void)
89 bonding_debug_root = debugfs_create_dir("bonding", NULL);
91 if (!bonding_debug_root)
92 pr_warn("Warning: Cannot create bonding directory in debugfs\n");
95 void bond_destroy_debugfs(void)
97 debugfs_remove_recursive(bonding_debug_root);
98 bonding_debug_root = NULL;
102 #else /* !CONFIG_DEBUG_FS */
104 void bond_debug_register(struct bonding *bond)
108 void bond_debug_unregister(struct bonding *bond)
112 void bond_debug_reregister(struct bonding *bond)
116 void bond_create_debugfs(void)
120 void bond_destroy_debugfs(void)
124 #endif /* CONFIG_DEBUG_FS */