Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
38 &client_info->ip_src,
39 &client_info->ip_dst,
40 &client_info->mac_dst,
41 client_info->slave->dev->name);
42 }
43
44 spin_unlock_bh(&bond->mode_lock);
45
46 return 0;
47}
48DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);
49
50void bond_debug_register(struct bonding *bond)
51{
52 bond->debug_dir =
53 debugfs_create_dir(bond->dev->name, bonding_debug_root);
54
55 debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
56 bond, &bond_debug_rlb_hash_fops);
57}
58
59void bond_debug_unregister(struct bonding *bond)
60{
61 debugfs_remove_recursive(bond->debug_dir);
62}
63
64void bond_debug_reregister(struct bonding *bond)
65{
66 int err = debugfs_change_name(bond->debug_dir, "%s", bond->dev->name);
67 if (err) {
68 netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");
69 bond_debug_unregister(bond);
70 }
71}
72
73void __init bond_create_debugfs(void)
74{
75 bonding_debug_root = debugfs_create_dir("bonding", NULL);
76
77 if (IS_ERR(bonding_debug_root))
78 pr_warn("Warning: Cannot create bonding directory in debugfs\n");
79}
80
81void bond_destroy_debugfs(void)
82{
83 debugfs_remove_recursive(bonding_debug_root);
84 bonding_debug_root = NULL;
85}
86
87
88#else /* !CONFIG_DEBUG_FS */
89
90void bond_debug_register(struct bonding *bond)
91{
92}
93
94void bond_debug_unregister(struct bonding *bond)
95{
96}
97
98void bond_debug_reregister(struct bonding *bond)
99{
100}
101
102void __init bond_create_debugfs(void)
103{
104}
105
106void bond_destroy_debugfs(void)
107{
108}
109
110#endif /* CONFIG_DEBUG_FS */