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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>
6
7#include <net/bonding.h>
8#include <net/bond_alb.h>
9
10#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS)
11
12#include <linux/debugfs.h>
13#include <linux/seq_file.h>
14
15static struct dentry *bonding_debug_root;
16
17/* Show RLB hash table */
18static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
19{
20 struct bonding *bond = m->private;
21 struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
22 struct rlb_client_info *client_info;
23 u32 hash_index;
24
25 if (BOND_MODE(bond) != BOND_MODE_ALB)
26 return 0;
27
28 seq_printf(m, "SourceIP DestinationIP "
29 "Destination MAC DEV\n");
30
31 spin_lock_bh(&bond->mode_lock);
32
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 if (client_info->slave)
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 else
44 seq_printf(m, "%-15pI4 %-15pI4 %-17pM (none)\n",
45 &client_info->ip_src,
46 &client_info->ip_dst,
47 &client_info->mac_dst);
48 }
49
50 spin_unlock_bh(&bond->mode_lock);
51
52 return 0;
53}
54DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);
55
56void bond_debug_register(struct bonding *bond)
57{
58 bond->debug_dir =
59 debugfs_create_dir(bond->dev->name, bonding_debug_root);
60
61 debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
62 bond, &bond_debug_rlb_hash_fops);
63}
64
65void bond_debug_unregister(struct bonding *bond)
66{
67 debugfs_remove_recursive(bond->debug_dir);
68}
69
70void bond_debug_reregister(struct bonding *bond)
71{
72 int err = debugfs_change_name(bond->debug_dir, "%s", bond->dev->name);
73 if (err) {
74 netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");
75 bond_debug_unregister(bond);
76 }
77}
78
79void __init bond_create_debugfs(void)
80{
81 bonding_debug_root = debugfs_create_dir("bonding", NULL);
82
83 if (IS_ERR(bonding_debug_root))
84 pr_warn("Warning: Cannot create bonding directory in debugfs\n");
85}
86
87void bond_destroy_debugfs(void)
88{
89 debugfs_remove_recursive(bonding_debug_root);
90 bonding_debug_root = NULL;
91}
92
93
94#else /* !CONFIG_DEBUG_FS */
95
96void bond_debug_register(struct bonding *bond)
97{
98}
99
100void bond_debug_unregister(struct bonding *bond)
101{
102}
103
104void bond_debug_reregister(struct bonding *bond)
105{
106}
107
108void __init bond_create_debugfs(void)
109{
110}
111
112void bond_destroy_debugfs(void)
113{
114}
115
116#endif /* CONFIG_DEBUG_FS */