2 * adummy.c: a dummy ATM driver
5 #include <linux/module.h>
6 #include <linux/kernel.h>
7 #include <linux/skbuff.h>
8 #include <linux/errno.h>
9 #include <linux/types.h>
10 #include <linux/string.h>
11 #include <linux/delay.h>
12 #include <linux/init.h>
14 #include <linux/timer.h>
15 #include <linux/interrupt.h>
16 #include <linux/slab.h>
18 #include <asm/byteorder.h>
19 #include <asm/uaccess.h>
21 #include <linux/atmdev.h>
22 #include <linux/atm.h>
23 #include <linux/sonet.h>
25 /* version definition */
27 #define DRV_VERSION "1.0"
29 #define DEV_LABEL "adummy"
31 #define ADUMMY_DEV(dev) ((struct adummy_dev *) (dev)->dev_data)
34 struct atm_dev *atm_dev;
36 struct list_head entry;
41 static LIST_HEAD(adummy_devs);
44 adummy_start(struct atm_dev *dev)
46 dev->ci_range.vpi_bits = 4;
47 dev->ci_range.vci_bits = 12;
53 adummy_open(struct atm_vcc *vcc)
58 if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC)
61 set_bit(ATM_VF_ADDR, &vcc->flags);
62 set_bit(ATM_VF_READY, &vcc->flags);
68 adummy_close(struct atm_vcc *vcc)
70 clear_bit(ATM_VF_READY, &vcc->flags);
71 clear_bit(ATM_VF_ADDR, &vcc->flags);
75 adummy_send(struct atm_vcc *vcc, struct sk_buff *skb)
80 dev_kfree_skb_any(skb);
81 atomic_inc(&vcc->stats->tx);
87 adummy_proc_read(struct atm_dev *dev, loff_t *pos, char *page)
92 return sprintf(page, "version %s\n", DRV_VERSION);
97 static struct atmdev_ops adummy_ops =
100 .close = adummy_close,
102 .proc_read = adummy_proc_read,
106 static int __init adummy_init(void)
108 struct atm_dev *atm_dev;
109 struct adummy_dev *adummy_dev;
112 printk(KERN_ERR "adummy: version %s\n", DRV_VERSION);
114 adummy_dev = kzalloc(sizeof(struct adummy_dev),
117 printk(KERN_ERR DEV_LABEL ": kzalloc() failed\n");
121 atm_dev = atm_dev_register(DEV_LABEL, &adummy_ops, -1, NULL);
123 printk(KERN_ERR DEV_LABEL ": atm_dev_register() failed\n");
128 adummy_dev->atm_dev = atm_dev;
129 atm_dev->dev_data = adummy_dev;
131 if (adummy_start(atm_dev)) {
132 printk(KERN_ERR DEV_LABEL ": adummy_start() failed\n");
137 list_add(&adummy_dev->entry, &adummy_devs);
142 atm_dev_deregister(atm_dev);
148 static void __exit adummy_cleanup(void)
150 struct adummy_dev *adummy_dev, *next;
152 list_for_each_entry_safe(adummy_dev, next, &adummy_devs, entry) {
153 atm_dev_deregister(adummy_dev->atm_dev);
158 module_init(adummy_init);
159 module_exit(adummy_cleanup);
161 MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>");
162 MODULE_DESCRIPTION("dummy ATM driver");
163 MODULE_LICENSE("GPL");