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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 | ||
6 | #include "bonding.h" | |
caafa842 | 7 | #include "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 | ||
caafa842 TI |
16 | /* |
17 | * Show RLB hash table | |
18 | */ | |
19 | static int bond_debug_rlb_hash_show(struct seq_file *m, void *v) | |
20 | { | |
21 | struct bonding *bond = m->private; | |
22 | struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond)); | |
23 | struct rlb_client_info *client_info; | |
24 | u32 hash_index; | |
25 | ||
01844098 | 26 | if (BOND_MODE(bond) != BOND_MODE_ALB) |
caafa842 TI |
27 | return 0; |
28 | ||
29 | seq_printf(m, "SourceIP DestinationIP " | |
30 | "Destination MAC DEV\n"); | |
31 | ||
32 | spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock)); | |
33 | ||
e53665c6 JB |
34 | hash_index = bond_info->rx_hashtbl_used_head; |
35 | for (; hash_index != RLB_NULL_INDEX; | |
36 | hash_index = client_info->used_next) { | |
caafa842 TI |
37 | client_info = &(bond_info->rx_hashtbl[hash_index]); |
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 | } | |
44 | ||
45 | spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock)); | |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
50 | static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file) | |
51 | { | |
52 | return single_open(file, bond_debug_rlb_hash_show, inode->i_private); | |
53 | } | |
54 | ||
55 | static const struct file_operations bond_debug_rlb_hash_fops = { | |
56 | .owner = THIS_MODULE, | |
57 | .open = bond_debug_rlb_hash_open, | |
58 | .read = seq_read, | |
59 | .llseek = seq_lseek, | |
60 | .release = single_release, | |
61 | }; | |
62 | ||
f073c7ca TI |
63 | void bond_debug_register(struct bonding *bond) |
64 | { | |
65 | if (!bonding_debug_root) | |
66 | return; | |
67 | ||
68 | bond->debug_dir = | |
69 | debugfs_create_dir(bond->dev->name, bonding_debug_root); | |
70 | ||
71 | if (!bond->debug_dir) { | |
91565ebb | 72 | pr_warn("%s: Warning: failed to register to debugfs\n", |
f073c7ca TI |
73 | bond->dev->name); |
74 | return; | |
75 | } | |
caafa842 TI |
76 | |
77 | debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir, | |
78 | bond, &bond_debug_rlb_hash_fops); | |
f073c7ca TI |
79 | } |
80 | ||
81 | void bond_debug_unregister(struct bonding *bond) | |
82 | { | |
83 | if (!bonding_debug_root) | |
84 | return; | |
85 | ||
86 | debugfs_remove_recursive(bond->debug_dir); | |
87 | } | |
88 | ||
89 | void bond_debug_reregister(struct bonding *bond) | |
90 | { | |
91 | struct dentry *d; | |
92 | ||
93 | if (!bonding_debug_root) | |
94 | return; | |
95 | ||
96 | d = debugfs_rename(bonding_debug_root, bond->debug_dir, | |
97 | bonding_debug_root, bond->dev->name); | |
98 | if (d) { | |
99 | bond->debug_dir = d; | |
100 | } else { | |
91565ebb JP |
101 | pr_warn("%s: Warning: failed to reregister, so just unregister old one\n", |
102 | bond->dev->name); | |
f073c7ca TI |
103 | bond_debug_unregister(bond); |
104 | } | |
105 | } | |
106 | ||
107 | void bond_create_debugfs(void) | |
108 | { | |
109 | bonding_debug_root = debugfs_create_dir("bonding", NULL); | |
110 | ||
111 | if (!bonding_debug_root) { | |
91565ebb | 112 | pr_warn("Warning: Cannot create bonding directory in debugfs\n"); |
f073c7ca TI |
113 | } |
114 | } | |
115 | ||
116 | void bond_destroy_debugfs(void) | |
117 | { | |
118 | debugfs_remove_recursive(bonding_debug_root); | |
119 | bonding_debug_root = NULL; | |
120 | } | |
121 | ||
122 | ||
123 | #else /* !CONFIG_DEBUG_FS */ | |
124 | ||
125 | void bond_debug_register(struct bonding *bond) | |
126 | { | |
127 | } | |
128 | ||
129 | void bond_debug_unregister(struct bonding *bond) | |
130 | { | |
131 | } | |
132 | ||
133 | void bond_debug_reregister(struct bonding *bond) | |
134 | { | |
135 | } | |
136 | ||
137 | void bond_create_debugfs(void) | |
138 | { | |
139 | } | |
140 | ||
141 | void bond_destroy_debugfs(void) | |
142 | { | |
143 | } | |
144 | ||
145 | #endif /* CONFIG_DEBUG_FS */ |