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 | |
15 | static struct dentry *bonding_debug_root; |
16 | |
17 | /* Show RLB hash table */ |
18 | static 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 | } |
48 | DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash); |
49 | |
50 | void 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 | |
59 | void bond_debug_unregister(struct bonding *bond) |
60 | { |
61 | debugfs_remove_recursive(bond->debug_dir); |
62 | } |
63 | |
64 | void bond_debug_reregister(struct bonding *bond) |
65 | { |
66 | struct dentry *d; |
67 | |
68 | d = debugfs_rename(bonding_debug_root, bond->debug_dir, |
69 | bonding_debug_root, bond->dev->name); |
70 | if (!IS_ERR(d)) { |
71 | bond->debug_dir = d; |
72 | } else { |
73 | netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n" ); |
74 | bond_debug_unregister(bond); |
75 | } |
76 | } |
77 | |
78 | void __init bond_create_debugfs(void) |
79 | { |
80 | bonding_debug_root = debugfs_create_dir("bonding" , NULL); |
81 | |
82 | if (IS_ERR(bonding_debug_root)) |
83 | pr_warn("Warning: Cannot create bonding directory in debugfs\n" ); |
84 | } |
85 | |
86 | void bond_destroy_debugfs(void) |
87 | { |
88 | debugfs_remove_recursive(bonding_debug_root); |
89 | bonding_debug_root = NULL; |
90 | } |
91 | |
92 | |
93 | #else /* !CONFIG_DEBUG_FS */ |
94 | |
95 | void bond_debug_register(struct bonding *bond) |
96 | { |
97 | } |
98 | |
99 | void bond_debug_unregister(struct bonding *bond) |
100 | { |
101 | } |
102 | |
103 | void bond_debug_reregister(struct bonding *bond) |
104 | { |
105 | } |
106 | |
107 | void __init bond_create_debugfs(void) |
108 | { |
109 | } |
110 | |
111 | void bond_destroy_debugfs(void) |
112 | { |
113 | } |
114 | |
115 | #endif /* CONFIG_DEBUG_FS */ |
116 | |