net/atm/lec.c: Add __lec_arp_check_expire and other cleanups
[linux-2.6.git] / net / atm / atm_sysfs.c
1 /* ATM driver model support. */
2
3 #include <linux/kernel.h>
4 #include <linux/init.h>
5 #include <linux/kobject.h>
6 #include <linux/atmdev.h>
7 #include "common.h"
8 #include "resources.h"
9
10 #define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
11
12 static ssize_t show_type(struct device *cdev,
13                          struct device_attribute *attr, char *buf)
14 {
15         struct atm_dev *adev = to_atm_dev(cdev);
16         return sprintf(buf, "%s\n", adev->type);
17 }
18
19 static ssize_t show_address(struct device *cdev,
20                             struct device_attribute *attr, char *buf)
21 {
22         char *pos = buf;
23         struct atm_dev *adev = to_atm_dev(cdev);
24         int i;
25
26         for (i = 0; i < (ESI_LEN - 1); i++)
27                 pos += sprintf(pos, "%02x:", adev->esi[i]);
28         pos += sprintf(pos, "%02x\n", adev->esi[i]);
29
30         return pos - buf;
31 }
32
33 static ssize_t show_atmaddress(struct device *cdev,
34                                struct device_attribute *attr, char *buf)
35 {
36         unsigned long flags;
37         char *pos = buf;
38         struct atm_dev *adev = to_atm_dev(cdev);
39         struct atm_dev_addr *aaddr;
40         int bin[] = { 1, 2, 10, 6, 1 }, *fmt = bin;
41         int i, j;
42
43         spin_lock_irqsave(&adev->lock, flags);
44         list_for_each_entry(aaddr, &adev->local, entry) {
45                 for (i = 0, j = 0; i < ATM_ESA_LEN; ++i, ++j) {
46                         if (j == *fmt) {
47                                 pos += sprintf(pos, ".");
48                                 ++fmt;
49                                 j = 0;
50                         }
51                         pos += sprintf(pos, "%02x",
52                                        aaddr->addr.sas_addr.prv[i]);
53                 }
54                 pos += sprintf(pos, "\n");
55         }
56         spin_unlock_irqrestore(&adev->lock, flags);
57
58         return pos - buf;
59 }
60
61 static ssize_t show_carrier(struct device *cdev,
62                             struct device_attribute *attr, char *buf)
63 {
64         char *pos = buf;
65         struct atm_dev *adev = to_atm_dev(cdev);
66
67         pos += sprintf(pos, "%d\n",
68                        adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
69
70         return pos - buf;
71 }
72
73 static ssize_t show_link_rate(struct device *cdev,
74                               struct device_attribute *attr, char *buf)
75 {
76         char *pos = buf;
77         struct atm_dev *adev = to_atm_dev(cdev);
78         int link_rate;
79
80         /* show the link rate, not the data rate */
81         switch (adev->link_rate) {
82         case ATM_OC3_PCR:
83                 link_rate = 155520000;
84                 break;
85         case ATM_OC12_PCR:
86                 link_rate = 622080000;
87                 break;
88         case ATM_25_PCR:
89                 link_rate = 25600000;
90                 break;
91         default:
92                 link_rate = adev->link_rate * 8 * 53;
93         }
94         pos += sprintf(pos, "%d\n", link_rate);
95
96         return pos - buf;
97 }
98
99 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
100 static DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
101 static DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
102 static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
103 static DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
104
105 static struct device_attribute *atm_attrs[] = {
106         &dev_attr_atmaddress,
107         &dev_attr_address,
108         &dev_attr_carrier,
109         &dev_attr_type,
110         &dev_attr_link_rate,
111         NULL
112 };
113
114
115 static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
116 {
117         struct atm_dev *adev;
118
119         if (!cdev)
120                 return -ENODEV;
121
122         adev = to_atm_dev(cdev);
123         if (!adev)
124                 return -ENODEV;
125
126         if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
127                 return -ENOMEM;
128
129         return 0;
130 }
131
132 static void atm_release(struct device *cdev)
133 {
134         struct atm_dev *adev = to_atm_dev(cdev);
135
136         kfree(adev);
137 }
138
139 static struct class atm_class = {
140         .name           = "atm",
141         .dev_release    = atm_release,
142         .dev_uevent             = atm_uevent,
143 };
144
145 int atm_register_sysfs(struct atm_dev *adev)
146 {
147         struct device *cdev = &adev->class_dev;
148         int i, j, err;
149
150         cdev->class = &atm_class;
151         dev_set_drvdata(cdev, adev);
152
153         dev_set_name(cdev, "%s%d", adev->type, adev->number);
154         err = device_register(cdev);
155         if (err < 0)
156                 return err;
157
158         for (i = 0; atm_attrs[i]; i++) {
159                 err = device_create_file(cdev, atm_attrs[i]);
160                 if (err)
161                         goto err_out;
162         }
163
164         return 0;
165
166 err_out:
167         for (j = 0; j < i; j++)
168                 device_remove_file(cdev, atm_attrs[j]);
169         device_del(cdev);
170         return err;
171 }
172
173 void atm_unregister_sysfs(struct atm_dev *adev)
174 {
175         struct device *cdev = &adev->class_dev;
176
177         device_del(cdev);
178 }
179
180 int __init atm_sysfs_init(void)
181 {
182         return class_register(&atm_class);
183 }
184
185 void __exit atm_sysfs_exit(void)
186 {
187         class_unregister(&atm_class);
188 }