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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [net/] [atm/] [resources.c] - Blame information for rev 1275

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/* net/atm/resources.c - Staticly allocated resources */
 
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
 
 
#include <linux/config.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/atmdev.h>
#include <linux/sonet.h>
#include <linux/kernel.h> /* for barrier */
#include <linux/module.h>
#include <linux/bitops.h>
#include <net/sock.h>    /* for struct sock */
#include <asm/segment.h> /* for get_fs_long and put_fs_long */
 
#include "common.h"
#include "resources.h"
#include "addr.h"
 
 
LIST_HEAD(atm_devs);
spinlock_t atm_dev_lock = SPIN_LOCK_UNLOCKED;
 
 
static struct atm_dev *__alloc_atm_dev(const char *type)
{
        struct atm_dev *dev;
 
        dev = kmalloc(sizeof(*dev), GFP_ATOMIC);
        if (!dev)
                return NULL;
        memset(dev, 0, sizeof(*dev));
        dev->type = type;
        dev->signal = ATM_PHY_SIG_UNKNOWN;
        dev->link_rate = ATM_OC3_PCR;
        spin_lock_init(&dev->lock);
 
        return dev;
}
 
 
static void __free_atm_dev(struct atm_dev *dev)
{
        kfree(dev);
}
 
static struct atm_dev *__atm_dev_lookup(int number)
{
        struct atm_dev *dev;
        struct list_head *p;
 
        list_for_each(p, &atm_devs) {
                dev = list_entry(p, struct atm_dev, dev_list);
                if ((dev->ops) && (dev->number == number)) {
                        atm_dev_hold(dev);
                        return dev;
                }
        }
        return NULL;
}
 
struct atm_dev *atm_dev_lookup(int number)
{
        struct atm_dev *dev;
 
        spin_lock(&atm_dev_lock);
        dev = __atm_dev_lookup(number);
        spin_unlock(&atm_dev_lock);
        return dev;
}
 
struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops,
                                 int number, atm_dev_flags_t *flags)
{
        struct atm_dev *dev, *inuse;
 
 
        dev = __alloc_atm_dev(type);
        if (!dev) {
                printk(KERN_ERR "atm_dev_register: no space for dev %s\n",
                    type);
                return NULL;
        }
        spin_lock(&atm_dev_lock);
        if (number != -1) {
                if ((inuse = __atm_dev_lookup(number))) {
                        atm_dev_put(inuse);
                        spin_unlock(&atm_dev_lock);
                        __free_atm_dev(dev);
                        return NULL;
                }
                dev->number = number;
        } else {
                dev->number = 0;
                while ((inuse = __atm_dev_lookup(dev->number))) {
                        atm_dev_put(inuse);
                        dev->number++;
                }
        }
 
        dev->ops = ops;
        if (flags)
                dev->flags = *flags;
        else
                memset(&dev->flags, 0, sizeof(dev->flags));
        memset(&dev->stats, 0, sizeof(dev->stats));
        atomic_set(&dev->refcnt, 1);
        list_add_tail(&dev->dev_list, &atm_devs);
        spin_unlock(&atm_dev_lock);
 
#ifdef CONFIG_PROC_FS
        if (ops->proc_read) {
                if (atm_proc_dev_register(dev) < 0) {
                        printk(KERN_ERR "atm_dev_register: "
                               "atm_proc_dev_register failed for dev %s\n",
                               type);
                        spin_lock(&atm_dev_lock);
                        list_del(&dev->dev_list);
                        spin_unlock(&atm_dev_lock);
                        __free_atm_dev(dev);
                        return NULL;
                }
        }
#endif
 
        return dev;
}
 
 
void atm_dev_deregister(struct atm_dev *dev)
{
        unsigned long warning_time;
 
#ifdef CONFIG_PROC_FS
        if (dev->ops->proc_read)
                atm_proc_dev_deregister(dev);
#endif
        spin_lock(&atm_dev_lock);
        list_del(&dev->dev_list);
        spin_unlock(&atm_dev_lock);
 
        warning_time = jiffies;
        while (atomic_read(&dev->refcnt) != 1) {
                current->state = TASK_INTERRUPTIBLE;
                schedule_timeout(HZ / 4);
                current->state = TASK_RUNNING;
                if ((jiffies - warning_time) > 10 * HZ) {
                        printk(KERN_EMERG "atm_dev_deregister: waiting for "
                               "dev %d to become free. Usage count = %d\n",
                               dev->number, atomic_read(&dev->refcnt));
                        warning_time = jiffies;
                }
        }
 
        __free_atm_dev(dev);
}
 
void shutdown_atm_dev(struct atm_dev *dev)
{
        if (atomic_read(&dev->refcnt) > 1) {
                set_bit(ATM_DF_CLOSE, &dev->flags);
                return;
        }
        if (dev->ops->dev_close)
                dev->ops->dev_close(dev);
        atm_dev_deregister(dev);
}
 
 
static void copy_aal_stats(struct k_atm_aal_stats *from,
    struct atm_aal_stats *to)
{
#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
        __AAL_STAT_ITEMS
#undef __HANDLE_ITEM
}
 
 
static void subtract_aal_stats(struct k_atm_aal_stats *from,
    struct atm_aal_stats *to)
{
#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
        __AAL_STAT_ITEMS
#undef __HANDLE_ITEM
}
 
 
static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats *arg, int zero)
{
        struct atm_dev_stats tmp;
        int error = 0;
 
        copy_aal_stats(&dev->stats.aal0, &tmp.aal0);
        copy_aal_stats(&dev->stats.aal34, &tmp.aal34);
        copy_aal_stats(&dev->stats.aal5, &tmp.aal5);
        if (arg)
                error = copy_to_user(arg, &tmp, sizeof(tmp));
        if (zero && !error) {
                subtract_aal_stats(&dev->stats.aal0, &tmp.aal0);
                subtract_aal_stats(&dev->stats.aal34, &tmp.aal34);
                subtract_aal_stats(&dev->stats.aal5, &tmp.aal5);
        }
        return error ? -EFAULT : 0;
}
 
 
int atm_dev_ioctl(unsigned int cmd, unsigned long arg)
{
        void *buf;
        int error = 0, len, number, size = 0;
        struct atm_dev *dev;
 
        if (cmd == ATM_GETNAMES) {
                int *tmp_buf, *tmp_bufp;
                struct list_head *p;
                /*
                 * ATM_GETNAMES is a special case: it doesn't require a
                 * device number argument
                 */
                if (get_user(buf, &((struct atm_iobuf *) arg)->buffer))
                        return -EFAULT;
                if (get_user(len, &((struct atm_iobuf *) arg)->length))
                        return -EFAULT;
                spin_lock(&atm_dev_lock);
                list_for_each(p, &atm_devs)
                        size += sizeof(int);
                if (size > len) {
                        spin_unlock(&atm_dev_lock);
                        return -E2BIG;
                }
                tmp_buf = tmp_bufp = kmalloc(size, GFP_ATOMIC);
                if (!tmp_buf) {
                        spin_unlock(&atm_dev_lock);
                        return -ENOMEM;
                }
                list_for_each(p, &atm_devs) {
                        dev = list_entry(p, struct atm_dev, dev_list);
                        *tmp_bufp++ = dev->number;
                }
                spin_unlock(&atm_dev_lock);
                error = (copy_to_user(buf, tmp_buf, size) ||
                                put_user(size, &((struct atm_iobuf *) arg)->length))
                                        ? -EFAULT : 0;
                kfree(tmp_buf);
                return error;
        }
 
        if (get_user(buf, &((struct atmif_sioc *) arg)->arg))
                return -EFAULT;
        if (get_user(len, &((struct atmif_sioc *) arg)->length))
                return -EFAULT;
        if (get_user(number, &((struct atmif_sioc *) arg)->number))
                return -EFAULT;
 
        if (!(dev = atm_dev_lookup(number)))
                return -ENODEV;
 
        switch (cmd) {
                case ATM_GETTYPE:
                        size = strlen(dev->type) + 1;
                        if (copy_to_user(buf, dev->type, size)) {
                                error = -EFAULT;
                                goto done;
                        }
                        break;
                case ATM_GETESI:
                        size = ESI_LEN;
                        if (copy_to_user(buf, dev->esi, size)) {
                                error = -EFAULT;
                                goto done;
                        }
                        break;
                case ATM_SETESI:
                        {
                                int i;
 
                                for (i = 0; i < ESI_LEN; i++)
                                        if (dev->esi[i]) {
                                                error = -EEXIST;
                                                goto done;
                                        }
                        }
                        /* fall through */
                case ATM_SETESIF:
                        {
                                unsigned char esi[ESI_LEN];
 
                                if (!capable(CAP_NET_ADMIN)) {
                                        error = -EPERM;
                                        goto done;
                                }
                                if (copy_from_user(esi, buf, ESI_LEN)) {
                                        error = -EFAULT;
                                        goto done;
                                }
                                memcpy(dev->esi, esi, ESI_LEN);
                                error =  ESI_LEN;
                                goto done;
                        }
                case ATM_GETSTATZ:
                        if (!capable(CAP_NET_ADMIN)) {
                                error = -EPERM;
                                goto done;
                        }
                        /* fall through */
                case ATM_GETSTAT:
                        size = sizeof(struct atm_dev_stats);
                        error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);
                        if (error)
                                goto done;
                        break;
                case ATM_GETCIRANGE:
                        size = sizeof(struct atm_cirange);
                        if (copy_to_user(buf, &dev->ci_range, size)) {
                                error = -EFAULT;
                                goto done;
                        }
                        break;
                case ATM_GETLINKRATE:
                        size = sizeof(int);
                        if (copy_to_user(buf, &dev->link_rate, size)) {
                                error = -EFAULT;
                                goto done;
                        }
                        break;
                case ATM_RSTADDR:
                        if (!capable(CAP_NET_ADMIN)) {
                                error = -EPERM;
                                goto done;
                        }
                        atm_reset_addr(dev);
                        break;
                case ATM_ADDADDR:
                case ATM_DELADDR:
                        if (!capable(CAP_NET_ADMIN)) {
                                error = -EPERM;
                                goto done;
                        }
                        {
                                struct sockaddr_atmsvc addr;
 
                                if (copy_from_user(&addr, buf, sizeof(addr))) {
                                        error = -EFAULT;
                                        goto done;
                                }
                                if (cmd == ATM_ADDADDR)
                                        error = atm_add_addr(dev, &addr);
                                else
                                        error = atm_del_addr(dev, &addr);
                                goto done;
                        }
                case ATM_GETADDR:
                        error = atm_get_addr(dev, buf, len);
                        if (error < 0)
                                goto done;
                        size = error;
                        /* write back size even if it's zero */
                        goto write_size;
                case ATM_SETLOOP:
                        if (__ATM_LM_XTRMT((int) (long) buf) &&
                            __ATM_LM_XTLOC((int) (long) buf) >
                            __ATM_LM_XTRMT((int) (long) buf)) {
                                error = -EINVAL;
                                goto done;
                        }
                        /* fall through */
                case ATM_SETCIRANGE:
                case SONET_GETSTATZ:
                case SONET_SETDIAG:
                case SONET_CLRDIAG:
                case SONET_SETFRAMING:
                        if (!capable(CAP_NET_ADMIN)) {
                                error = -EPERM;
                                goto done;
                        }
                        /* fall through */
                default:
                        if (!dev->ops->ioctl) {
                                error = -EINVAL;
                                goto done;
                        }
                        size = dev->ops->ioctl(dev, cmd, buf);
                        if (size < 0) {
                                error = (size == -ENOIOCTLCMD ? -EINVAL : size);
                                goto done;
                        }
        }
 
        if (size) {
write_size:
                error = put_user(size,
                          &((struct atmif_sioc *) arg)->length)
                          ? -EFAULT : 0;
        }
done:
        atm_dev_put(dev);
        return error;
}
 
 
EXPORT_SYMBOL(atm_dev_register);
EXPORT_SYMBOL(atm_dev_deregister);
EXPORT_SYMBOL(atm_dev_lookup);
EXPORT_SYMBOL(shutdown_atm_dev);

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [net/] [atm/] [resources.c] - Blame information for rev 1275

Line No.	Rev	Author	Line
1	1275	phoenix	`/* net/atm/resources.c - Staticly allocated resources */`
2
3			`/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */`
4
5
6			`#include <linux/config.h>`
7			`#include <linux/ctype.h>`
8			`#include <linux/string.h>`
9			`#include <linux/atmdev.h>`
10			`#include <linux/sonet.h>`
11			`#include <linux/kernel.h> /* for barrier */`
12			`#include <linux/module.h>`
13			`#include <linux/bitops.h>`
14			`#include <net/sock.h> /* for struct sock */`
15			`#include <asm/segment.h> /* for get_fs_long and put_fs_long */`
16
17			`#include "common.h"`
18			`#include "resources.h"`
19			`#include "addr.h"`
20
21
22			`LIST_HEAD(atm_devs);`
23			`spinlock_t atm_dev_lock = SPIN_LOCK_UNLOCKED;`
24
25
26			`static struct atm_dev __alloc_atm_dev(const char type)`
27			`{`
28			`struct atm_dev *dev;`
29
30			`dev = kmalloc(sizeof(*dev), GFP_ATOMIC);`
31			`if (!dev)`
32			`return NULL;`
33			`memset(dev, 0, sizeof(*dev));`
34			`dev->type = type;`
35			`dev->signal = ATM_PHY_SIG_UNKNOWN;`
36			`dev->link_rate = ATM_OC3_PCR;`
37			`spin_lock_init(&dev->lock);`
38
39			`return dev;`
40			`}`
41
42
43			`static void __free_atm_dev(struct atm_dev *dev)`
44			`{`
45			`kfree(dev);`
46			`}`
47
48			`static struct atm_dev *__atm_dev_lookup(int number)`
49			`{`
50			`struct atm_dev *dev;`
51			`struct list_head *p;`
52
53			`list_for_each(p, &atm_devs) {`
54			`dev = list_entry(p, struct atm_dev, dev_list);`
55			`if ((dev->ops) && (dev->number == number)) {`
56			`atm_dev_hold(dev);`
57			`return dev;`
58			`}`
59			`}`
60			`return NULL;`
61			`}`
62
63			`struct atm_dev *atm_dev_lookup(int number)`
64			`{`
65			`struct atm_dev *dev;`
66
67			`spin_lock(&atm_dev_lock);`
68			`dev = __atm_dev_lookup(number);`
69			`spin_unlock(&atm_dev_lock);`
70			`return dev;`
71			`}`
72
73			`struct atm_dev atm_dev_register(const char type, const struct atmdev_ops *ops,`
74			`int number, atm_dev_flags_t *flags)`
75			`{`
76			`struct atm_dev dev, inuse;`
77
78
79			`dev = __alloc_atm_dev(type);`
80			`if (!dev) {`
81			`printk(KERN_ERR "atm_dev_register: no space for dev %s\n",`
82			`type);`
83			`return NULL;`
84			`}`
85			`spin_lock(&atm_dev_lock);`
86			`if (number != -1) {`
87			`if ((inuse = __atm_dev_lookup(number))) {`
88			`atm_dev_put(inuse);`
89			`spin_unlock(&atm_dev_lock);`
90			`__free_atm_dev(dev);`
91			`return NULL;`
92			`}`
93			`dev->number = number;`
94			`} else {`
95			`dev->number = 0;`
96			`while ((inuse = __atm_dev_lookup(dev->number))) {`
97			`atm_dev_put(inuse);`
98			`dev->number++;`
99			`}`
100			`}`
101
102			`dev->ops = ops;`
103			`if (flags)`
104			`dev->flags = *flags;`
105			`else`
106			`memset(&dev->flags, 0, sizeof(dev->flags));`
107			`memset(&dev->stats, 0, sizeof(dev->stats));`
108			`atomic_set(&dev->refcnt, 1);`
109			`list_add_tail(&dev->dev_list, &atm_devs);`
110			`spin_unlock(&atm_dev_lock);`
111
112			`#ifdef CONFIG_PROC_FS`
113			`if (ops->proc_read) {`
114			`if (atm_proc_dev_register(dev) < 0) {`
115			`printk(KERN_ERR "atm_dev_register: "`
116			`"atm_proc_dev_register failed for dev %s\n",`
117			`type);`
118			`spin_lock(&atm_dev_lock);`
119			`list_del(&dev->dev_list);`
120			`spin_unlock(&atm_dev_lock);`
121			`__free_atm_dev(dev);`
122			`return NULL;`
123			`}`
124			`}`
125			`#endif`
126
127			`return dev;`
128			`}`
129
130
131			`void atm_dev_deregister(struct atm_dev *dev)`
132			`{`
133			`unsigned long warning_time;`
134
135			`#ifdef CONFIG_PROC_FS`
136			`if (dev->ops->proc_read)`
137			`atm_proc_dev_deregister(dev);`
138			`#endif`
139			`spin_lock(&atm_dev_lock);`
140			`list_del(&dev->dev_list);`
141			`spin_unlock(&atm_dev_lock);`
142
143			`warning_time = jiffies;`
144			`while (atomic_read(&dev->refcnt) != 1) {`
145			`current->state = TASK_INTERRUPTIBLE;`
146			`schedule_timeout(HZ / 4);`
147			`current->state = TASK_RUNNING;`
148			`if ((jiffies - warning_time) > 10 * HZ) {`
149			`printk(KERN_EMERG "atm_dev_deregister: waiting for "`
150			`"dev %d to become free. Usage count = %d\n",`
151			`dev->number, atomic_read(&dev->refcnt));`
152			`warning_time = jiffies;`
153			`}`
154			`}`
155
156			`__free_atm_dev(dev);`
157			`}`
158
159			`void shutdown_atm_dev(struct atm_dev *dev)`
160			`{`
161			`if (atomic_read(&dev->refcnt) > 1) {`
162			`set_bit(ATM_DF_CLOSE, &dev->flags);`
163			`return;`
164			`}`
165			`if (dev->ops->dev_close)`
166			`dev->ops->dev_close(dev);`
167			`atm_dev_deregister(dev);`
168			`}`
169
170
171			`static void copy_aal_stats(struct k_atm_aal_stats *from,`
172			`struct atm_aal_stats *to)`
173			`{`
174			`#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)`
175			`__AAL_STAT_ITEMS`
176			`#undef __HANDLE_ITEM`
177			`}`
178
179
180			`static void subtract_aal_stats(struct k_atm_aal_stats *from,`
181			`struct atm_aal_stats *to)`
182			`{`
183			`#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)`
184			`__AAL_STAT_ITEMS`
185			`#undef __HANDLE_ITEM`
186			`}`
187
188
189			`static int fetch_stats(struct atm_dev dev, struct atm_dev_stats arg, int zero)`
190			`{`
191			`struct atm_dev_stats tmp;`
192			`int error = 0;`
193
194			`copy_aal_stats(&dev->stats.aal0, &tmp.aal0);`
195			`copy_aal_stats(&dev->stats.aal34, &tmp.aal34);`
196			`copy_aal_stats(&dev->stats.aal5, &tmp.aal5);`
197			`if (arg)`
198			`error = copy_to_user(arg, &tmp, sizeof(tmp));`
199			`if (zero && !error) {`
200			`subtract_aal_stats(&dev->stats.aal0, &tmp.aal0);`
201			`subtract_aal_stats(&dev->stats.aal34, &tmp.aal34);`
202			`subtract_aal_stats(&dev->stats.aal5, &tmp.aal5);`
203			`}`
204			`return error ? -EFAULT : 0;`
205			`}`
206
207
208			`int atm_dev_ioctl(unsigned int cmd, unsigned long arg)`
209			`{`
210			`void *buf;`
211			`int error = 0, len, number, size = 0;`
212			`struct atm_dev *dev;`
213
214			`if (cmd == ATM_GETNAMES) {`
215			`int tmp_buf, tmp_bufp;`
216			`struct list_head *p;`
217			`/*`
218			`* ATM_GETNAMES is a special case: it doesn't require a`
219			`* device number argument`
220			`*/`
221			`if (get_user(buf, &((struct atm_iobuf *) arg)->buffer))`
222			`return -EFAULT;`
223			`if (get_user(len, &((struct atm_iobuf *) arg)->length))`
224			`return -EFAULT;`
225			`spin_lock(&atm_dev_lock);`
226			`list_for_each(p, &atm_devs)`
227			`size += sizeof(int);`
228			`if (size > len) {`
229			`spin_unlock(&atm_dev_lock);`
230			`return -E2BIG;`
231			`}`
232			`tmp_buf = tmp_bufp = kmalloc(size, GFP_ATOMIC);`
233			`if (!tmp_buf) {`
234			`spin_unlock(&atm_dev_lock);`
235			`return -ENOMEM;`
236			`}`
237			`list_for_each(p, &atm_devs) {`
238			`dev = list_entry(p, struct atm_dev, dev_list);`
239			`*tmp_bufp++ = dev->number;`
240			`}`
241			`spin_unlock(&atm_dev_lock);`
242			`error = (copy_to_user(buf, tmp_buf, size) \|\|`
243			`put_user(size, &((struct atm_iobuf *) arg)->length))`
244			`? -EFAULT : 0;`
245			`kfree(tmp_buf);`
246			`return error;`
247			`}`
248
249			`if (get_user(buf, &((struct atmif_sioc *) arg)->arg))`
250			`return -EFAULT;`
251			`if (get_user(len, &((struct atmif_sioc *) arg)->length))`
252			`return -EFAULT;`
253			`if (get_user(number, &((struct atmif_sioc *) arg)->number))`
254			`return -EFAULT;`
255
256			`if (!(dev = atm_dev_lookup(number)))`
257			`return -ENODEV;`
258
259			`switch (cmd) {`
260			`case ATM_GETTYPE:`
261			`size = strlen(dev->type) + 1;`
262			`if (copy_to_user(buf, dev->type, size)) {`
263			`error = -EFAULT;`
264			`goto done;`
265			`}`
266			`break;`
267			`case ATM_GETESI:`
268			`size = ESI_LEN;`
269			`if (copy_to_user(buf, dev->esi, size)) {`
270			`error = -EFAULT;`
271			`goto done;`
272			`}`
273			`break;`
274			`case ATM_SETESI:`
275			`{`
276			`int i;`
277
278			`for (i = 0; i < ESI_LEN; i++)`
279			`if (dev->esi[i]) {`
280			`error = -EEXIST;`
281			`goto done;`
282			`}`
283			`}`
284			`/* fall through */`
285			`case ATM_SETESIF:`
286			`{`
287			`unsigned char esi[ESI_LEN];`
288
289			`if (!capable(CAP_NET_ADMIN)) {`
290			`error = -EPERM;`
291			`goto done;`
292			`}`
293			`if (copy_from_user(esi, buf, ESI_LEN)) {`
294			`error = -EFAULT;`
295			`goto done;`
296			`}`
297			`memcpy(dev->esi, esi, ESI_LEN);`
298			`error = ESI_LEN;`
299			`goto done;`
300			`}`
301			`case ATM_GETSTATZ:`
302			`if (!capable(CAP_NET_ADMIN)) {`
303			`error = -EPERM;`
304			`goto done;`
305			`}`
306			`/* fall through */`
307			`case ATM_GETSTAT:`
308			`size = sizeof(struct atm_dev_stats);`
309			`error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);`
310			`if (error)`
311			`goto done;`
312			`break;`
313			`case ATM_GETCIRANGE:`
314			`size = sizeof(struct atm_cirange);`
315			`if (copy_to_user(buf, &dev->ci_range, size)) {`
316			`error = -EFAULT;`
317			`goto done;`
318			`}`
319			`break;`
320			`case ATM_GETLINKRATE:`
321			`size = sizeof(int);`
322			`if (copy_to_user(buf, &dev->link_rate, size)) {`
323			`error = -EFAULT;`
324			`goto done;`
325			`}`
326			`break;`
327			`case ATM_RSTADDR:`
328			`if (!capable(CAP_NET_ADMIN)) {`
329			`error = -EPERM;`
330			`goto done;`
331			`}`
332			`atm_reset_addr(dev);`
333			`break;`
334			`case ATM_ADDADDR:`
335			`case ATM_DELADDR:`
336			`if (!capable(CAP_NET_ADMIN)) {`
337			`error = -EPERM;`
338			`goto done;`
339			`}`
340			`{`
341			`struct sockaddr_atmsvc addr;`
342
343			`if (copy_from_user(&addr, buf, sizeof(addr))) {`
344			`error = -EFAULT;`
345			`goto done;`
346			`}`
347			`if (cmd == ATM_ADDADDR)`
348			`error = atm_add_addr(dev, &addr);`
349			`else`
350			`error = atm_del_addr(dev, &addr);`
351			`goto done;`
352			`}`
353			`case ATM_GETADDR:`
354			`error = atm_get_addr(dev, buf, len);`
355			`if (error < 0)`
356			`goto done;`
357			`size = error;`
358			`/* write back size even if it's zero */`
359			`goto write_size;`
360			`case ATM_SETLOOP:`
361			`if (__ATM_LM_XTRMT((int) (long) buf) &&`
362			`__ATM_LM_XTLOC((int) (long) buf) >`
363			`__ATM_LM_XTRMT((int) (long) buf)) {`
364			`error = -EINVAL;`
365			`goto done;`
366			`}`
367			`/* fall through */`
368			`case ATM_SETCIRANGE:`
369			`case SONET_GETSTATZ:`
370			`case SONET_SETDIAG:`
371			`case SONET_CLRDIAG:`
372			`case SONET_SETFRAMING:`
373			`if (!capable(CAP_NET_ADMIN)) {`
374			`error = -EPERM;`
375			`goto done;`
376			`}`
377			`/* fall through */`
378			`default:`
379			`if (!dev->ops->ioctl) {`
380			`error = -EINVAL;`
381			`goto done;`
382			`}`
383			`size = dev->ops->ioctl(dev, cmd, buf);`
384			`if (size < 0) {`
385			`error = (size == -ENOIOCTLCMD ? -EINVAL : size);`
386			`goto done;`
387			`}`
388			`}`
389
390			`if (size) {`
391			`write_size:`
392			`error = put_user(size,`
393			`&((struct atmif_sioc *) arg)->length)`
394			`? -EFAULT : 0;`
395			`}`
396			`done:`
397			`atm_dev_put(dev);`
398			`return error;`
399			`}`
400
401
402			`EXPORT_SYMBOL(atm_dev_register);`
403			`EXPORT_SYMBOL(atm_dev_deregister);`
404			`EXPORT_SYMBOL(atm_dev_lookup);`
405			`EXPORT_SYMBOL(shutdown_atm_dev);`