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f073c7ca TI |
1 | #include <linux/kernel.h> |
2 | #include <linux/module.h> | |
3 | #include <linux/device.h> | |
4 | #include <linux/netdevice.h> | |
5 | ||
1ef8019b DM |
6 | #include <net/bonding.h> |
7 | #include <net/bond_alb.h> | |
f073c7ca | 8 | |
96ca7ffe | 9 | #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS) |
f073c7ca TI |
10 | |
11 | #include <linux/debugfs.h> | |
12 | #include <linux/seq_file.h> | |
13 | ||
14 | static struct dentry *bonding_debug_root; | |
15 | ||
547942ca | 16 | /* Show RLB hash table */ |
caafa842 TI |
17 | static int bond_debug_rlb_hash_show(struct seq_file *m, void *v) |
18 | { | |
19 | struct bonding *bond = m->private; | |
20 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); | |
21 | struct rlb_client_info *client_info; | |
22 | u32 hash_index; | |
23 | ||
01844098 | 24 | if (BOND_MODE(bond) != BOND_MODE_ALB) |
caafa842 TI |
25 | return 0; |
26 | ||
27 | seq_printf(m, "SourceIP DestinationIP " | |
28 | "Destination MAC DEV\n"); | |
29 | ||
4bab16d7 | 30 | spin_lock_bh(&bond->mode_lock); |
caafa842 | 31 | |
e53665c6 JB |
32 | hash_index = bond_info->rx_hashtbl_used_head; |
33 | for (; hash_index != RLB_NULL_INDEX; | |
34 | hash_index = client_info->used_next) { | |
caafa842 TI |
35 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
36 | seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n", | |
37 | &client_info->ip_src, | |
38 | &client_info->ip_dst, | |
39 | &client_info->mac_dst, | |
40 | client_info->slave->dev->name); | |
41 | } | |
42 | ||
4bab16d7 | 43 | spin_unlock_bh(&bond->mode_lock); |
caafa842 TI |
44 | |
45 | return 0; | |
46 | } | |
47 | ||
48 | static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file) | |
49 | { | |
50 | return single_open(file, bond_debug_rlb_hash_show, inode->i_private); | |
51 | } | |
52 | ||
53 | static const struct file_operations bond_debug_rlb_hash_fops = { | |
54 | .owner = THIS_MODULE, | |
55 | .open = bond_debug_rlb_hash_open, | |
56 | .read = seq_read, | |
57 | .llseek = seq_lseek, | |
58 | .release = single_release, | |
59 | }; | |
60 | ||
f073c7ca TI |
61 | void bond_debug_register(struct bonding *bond) |
62 | { | |
63 | if (!bonding_debug_root) | |
64 | return; | |
65 | ||
66 | bond->debug_dir = | |
67 | debugfs_create_dir(bond->dev->name, bonding_debug_root); | |
68 | ||
69 | if (!bond->debug_dir) { | |
9ef1cf16 | 70 | netdev_warn(bond->dev, "failed to register to debugfs\n"); |
f073c7ca TI |
71 | return; |
72 | } | |
caafa842 TI |
73 | |
74 | debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir, | |
75 | bond, &bond_debug_rlb_hash_fops); | |
f073c7ca TI |
76 | } |
77 | ||
78 | void bond_debug_unregister(struct bonding *bond) | |
79 | { | |
80 | if (!bonding_debug_root) | |
81 | return; | |
82 | ||
83 | debugfs_remove_recursive(bond->debug_dir); | |
84 | } | |
85 | ||
86 | void bond_debug_reregister(struct bonding *bond) | |
87 | { | |
88 | struct dentry *d; | |
89 | ||
90 | if (!bonding_debug_root) | |
91 | return; | |
92 | ||
93 | d = debugfs_rename(bonding_debug_root, bond->debug_dir, | |
94 | bonding_debug_root, bond->dev->name); | |
95 | if (d) { | |
96 | bond->debug_dir = d; | |
97 | } else { | |
9ef1cf16 | 98 | netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n"); |
f073c7ca TI |
99 | bond_debug_unregister(bond); |
100 | } | |
101 | } | |
102 | ||
103 | void bond_create_debugfs(void) | |
104 | { | |
105 | bonding_debug_root = debugfs_create_dir("bonding", NULL); | |
106 | ||
107 | if (!bonding_debug_root) { | |
91565ebb | 108 | pr_warn("Warning: Cannot create bonding directory in debugfs\n"); |
f073c7ca TI |
109 | } |
110 | } | |
111 | ||
112 | void bond_destroy_debugfs(void) | |
113 | { | |
114 | debugfs_remove_recursive(bonding_debug_root); | |
115 | bonding_debug_root = NULL; | |
116 | } | |
117 | ||
118 | ||
119 | #else /* !CONFIG_DEBUG_FS */ | |
120 | ||
121 | void bond_debug_register(struct bonding *bond) | |
122 | { | |
123 | } | |
124 | ||
125 | void bond_debug_unregister(struct bonding *bond) | |
126 | { | |
127 | } | |
128 | ||
129 | void bond_debug_reregister(struct bonding *bond) | |
130 | { | |
131 | } | |
132 | ||
133 | void bond_create_debugfs(void) | |
134 | { | |
135 | } | |
136 | ||
137 | void bond_destroy_debugfs(void) | |
138 | { | |
139 | } | |
140 | ||
141 | #endif /* CONFIG_DEBUG_FS */ |