2 * adummy.c: a dummy ATM driver
5 #include <linux/module.h>
6 #include <linux/version.h>
7 #include <linux/kernel.h>
8 #include <linux/skbuff.h>
10 #include <linux/errno.h>
11 #include <linux/types.h>
12 #include <linux/string.h>
13 #include <linux/delay.h>
14 #include <linux/init.h>
16 #include <linux/timer.h>
17 #include <linux/interrupt.h>
19 #include <asm/byteorder.h>
20 #include <asm/uaccess.h>
22 #include <linux/atmdev.h>
23 #include <linux/atm.h>
24 #include <linux/sonet.h>
26 /* version definition */
28 #define DRV_VERSION "1.0"
30 #define DEV_LABEL "adummy"
32 #define ADUMMY_DEV(dev) ((struct adummy_dev *) (dev)->dev_data)
35 struct atm_dev *atm_dev;
37 struct list_head entry;
42 static LIST_HEAD(adummy_devs);
45 adummy_start(struct atm_dev *dev)
47 dev->ci_range.vpi_bits = 4;
48 dev->ci_range.vci_bits = 12;
54 adummy_open(struct atm_vcc *vcc)
59 if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC)
62 set_bit(ATM_VF_ADDR, &vcc->flags);
63 set_bit(ATM_VF_READY, &vcc->flags);
69 adummy_close(struct atm_vcc *vcc)
71 clear_bit(ATM_VF_READY, &vcc->flags);
72 clear_bit(ATM_VF_ADDR, &vcc->flags);
76 adummy_send(struct atm_vcc *vcc, struct sk_buff *skb)
81 dev_kfree_skb_any(skb);
82 atomic_inc(&vcc->stats->tx);
88 adummy_proc_read(struct atm_dev *dev, loff_t *pos, char *page)
93 return sprintf(page, "version %s\n", DRV_VERSION);
98 static struct atmdev_ops adummy_ops =
101 .close = adummy_close,
103 .proc_read = adummy_proc_read,
107 static int __init adummy_init(void)
109 struct atm_dev *atm_dev;
110 struct adummy_dev *adummy_dev;
113 printk(KERN_ERR "adummy: version %s\n", DRV_VERSION);
115 adummy_dev = kzalloc(sizeof(struct adummy_dev),
118 printk(KERN_ERR DEV_LABEL ": kzalloc() failed\n");
122 atm_dev = atm_dev_register(DEV_LABEL, &adummy_ops, -1, NULL);
124 printk(KERN_ERR DEV_LABEL ": atm_dev_register() failed\n");
129 adummy_dev->atm_dev = atm_dev;
130 atm_dev->dev_data = adummy_dev;
132 if (adummy_start(atm_dev)) {
133 printk(KERN_ERR DEV_LABEL ": adummy_start() failed\n");
138 list_add(&adummy_dev->entry, &adummy_devs);
143 atm_dev_deregister(atm_dev);
149 static void __exit adummy_cleanup(void)
151 struct adummy_dev *adummy_dev, *next;
153 list_for_each_entry_safe(adummy_dev, next, &adummy_devs, entry) {
154 atm_dev_deregister(adummy_dev->atm_dev);
159 module_init(adummy_init);
160 module_exit(adummy_cleanup);
162 MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>");
163 MODULE_DESCRIPTION("dummy ATM driver");
164 MODULE_LICENSE("GPL");