net: usb: raw-ip: support more rmnet interfaces
[linux-2.6.git] / drivers / net / bonding / bond_debugfs.c
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"
7 #include "bond_alb.h"
8
9 #ifdef CONFIG_DEBUG_FS
10
11 #include <linux/debugfs.h>
12 #include <linux/seq_file.h>
13
14 static struct dentry *bonding_debug_root;
15
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
26         if (bond->params.mode != BOND_MODE_ALB)
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
34         hash_index = bond_info->rx_hashtbl_head;
35         for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->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_ALB_INFO(bond).rx_hashtbl_lock));
45
46         return 0;
47 }
48
49 static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
50 {
51         return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
52 }
53
54 static const struct file_operations bond_debug_rlb_hash_fops = {
55         .owner          = THIS_MODULE,
56         .open           = bond_debug_rlb_hash_open,
57         .read           = seq_read,
58         .llseek         = seq_lseek,
59         .release        = single_release,
60 };
61
62 void bond_debug_register(struct bonding *bond)
63 {
64         if (!bonding_debug_root)
65                 return;
66
67         bond->debug_dir =
68                 debugfs_create_dir(bond->dev->name, bonding_debug_root);
69
70         if (!bond->debug_dir) {
71                 pr_warning("%s: Warning: failed to register to debugfs\n",
72                         bond->dev->name);
73                 return;
74         }
75
76         debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
77                                 bond, &bond_debug_rlb_hash_fops);
78 }
79
80 void bond_debug_unregister(struct bonding *bond)
81 {
82         if (!bonding_debug_root)
83                 return;
84
85         debugfs_remove_recursive(bond->debug_dir);
86 }
87
88 void bond_debug_reregister(struct bonding *bond)
89 {
90         struct dentry *d;
91
92         if (!bonding_debug_root)
93                 return;
94
95         d = debugfs_rename(bonding_debug_root, bond->debug_dir,
96                            bonding_debug_root, bond->dev->name);
97         if (d) {
98                 bond->debug_dir = d;
99         } else {
100                 pr_warning("%s: Warning: failed to reregister, "
101                                 "so just unregister old one\n",
102                                 bond->dev->name);
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) {
112                 pr_warning("Warning: Cannot create bonding directory"
113                                 " in debugfs\n");
114         }
115 }
116
117 void bond_destroy_debugfs(void)
118 {
119         debugfs_remove_recursive(bonding_debug_root);
120         bonding_debug_root = NULL;
121 }
122
123
124 #else /* !CONFIG_DEBUG_FS */
125
126 void bond_debug_register(struct bonding *bond)
127 {
128 }
129
130 void bond_debug_unregister(struct bonding *bond)
131 {
132 }
133
134 void bond_debug_reregister(struct bonding *bond)
135 {
136 }
137
138 void bond_create_debugfs(void)
139 {
140 }
141
142 void bond_destroy_debugfs(void)
143 {
144 }
145
146 #endif /* CONFIG_DEBUG_FS */