Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / net / atm / svc.c
1 /* net/atm/svc.c - ATM SVC sockets */
2
3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
4
5
6 #include <linux/string.h>
7 #include <linux/net.h>          /* struct socket, struct proto_ops */
8 #include <linux/errno.h>        /* error codes */
9 #include <linux/kernel.h>       /* printk */
10 #include <linux/skbuff.h>
11 #include <linux/wait.h>
12 #include <linux/sched.h>        /* jiffies and HZ */
13 #include <linux/fcntl.h>        /* O_NONBLOCK */
14 #include <linux/init.h>
15 #include <linux/atm.h>          /* ATM stuff */
16 #include <linux/atmsap.h>
17 #include <linux/atmsvc.h>
18 #include <linux/atmdev.h>
19 #include <linux/bitops.h>
20 #include <net/sock.h>           /* for sock_no_* */
21 #include <asm/uaccess.h>
22
23 #include "resources.h"
24 #include "common.h"             /* common for PVCs and SVCs */
25 #include "signaling.h"
26 #include "addr.h"
27
28 static int svc_create(struct net *net, struct socket *sock,int protocol);
29
30 /*
31  * Note: since all this is still nicely synchronized with the signaling demon,
32  *       there's no need to protect sleep loops with clis. If signaling is
33  *       moved into the kernel, that would change.
34  */
35
36
37 static int svc_shutdown(struct socket *sock,int how)
38 {
39         return 0;
40 }
41
42
43 static void svc_disconnect(struct atm_vcc *vcc)
44 {
45         DEFINE_WAIT(wait);
46         struct sk_buff *skb;
47         struct sock *sk = sk_atm(vcc);
48
49         pr_debug("svc_disconnect %p\n",vcc);
50         if (test_bit(ATM_VF_REGIS,&vcc->flags)) {
51                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
52                 sigd_enq(vcc,as_close,NULL,NULL,NULL);
53                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags) && sigd) {
54                         schedule();
55                         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
56                 }
57                 finish_wait(sk->sk_sleep, &wait);
58         }
59         /* beware - socket is still in use by atmsigd until the last
60            as_indicate has been answered */
61         while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
62                 atm_return(vcc, skb->truesize);
63                 pr_debug("LISTEN REL\n");
64                 sigd_enq2(NULL,as_reject,vcc,NULL,NULL,&vcc->qos,0);
65                 dev_kfree_skb(skb);
66         }
67         clear_bit(ATM_VF_REGIS, &vcc->flags);
68         /* ... may retry later */
69 }
70
71
72 static int svc_release(struct socket *sock)
73 {
74         struct sock *sk = sock->sk;
75         struct atm_vcc *vcc;
76
77         if (sk)  {
78                 vcc = ATM_SD(sock);
79                 pr_debug("svc_release %p\n", vcc);
80                 clear_bit(ATM_VF_READY, &vcc->flags);
81                 /* VCC pointer is used as a reference, so we must not free it
82                    (thereby subjecting it to re-use) before all pending connections
83                    are closed */
84                 svc_disconnect(vcc);
85                 vcc_release(sock);
86         }
87         return 0;
88 }
89
90
91 static int svc_bind(struct socket *sock,struct sockaddr *sockaddr,
92     int sockaddr_len)
93 {
94         DEFINE_WAIT(wait);
95         struct sock *sk = sock->sk;
96         struct sockaddr_atmsvc *addr;
97         struct atm_vcc *vcc;
98         int error;
99
100         if (sockaddr_len != sizeof(struct sockaddr_atmsvc))
101                 return -EINVAL;
102         lock_sock(sk);
103         if (sock->state == SS_CONNECTED) {
104                 error = -EISCONN;
105                 goto out;
106         }
107         if (sock->state != SS_UNCONNECTED) {
108                 error = -EINVAL;
109                 goto out;
110         }
111         vcc = ATM_SD(sock);
112         addr = (struct sockaddr_atmsvc *) sockaddr;
113         if (addr->sas_family != AF_ATMSVC) {
114                 error = -EAFNOSUPPORT;
115                 goto out;
116         }
117         clear_bit(ATM_VF_BOUND,&vcc->flags);
118             /* failing rebind will kill old binding */
119         /* @@@ check memory (de)allocation on rebind */
120         if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) {
121                 error = -EBADFD;
122                 goto out;
123         }
124         vcc->local = *addr;
125         set_bit(ATM_VF_WAITING, &vcc->flags);
126         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
127         sigd_enq(vcc,as_bind,NULL,NULL,&vcc->local);
128         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
129                 schedule();
130                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
131         }
132         finish_wait(sk->sk_sleep, &wait);
133         clear_bit(ATM_VF_REGIS,&vcc->flags); /* doesn't count */
134         if (!sigd) {
135                 error = -EUNATCH;
136                 goto out;
137         }
138         if (!sk->sk_err)
139                 set_bit(ATM_VF_BOUND,&vcc->flags);
140         error = -sk->sk_err;
141 out:
142         release_sock(sk);
143         return error;
144 }
145
146
147 static int svc_connect(struct socket *sock,struct sockaddr *sockaddr,
148     int sockaddr_len,int flags)
149 {
150         DEFINE_WAIT(wait);
151         struct sock *sk = sock->sk;
152         struct sockaddr_atmsvc *addr;
153         struct atm_vcc *vcc = ATM_SD(sock);
154         int error;
155
156         pr_debug("svc_connect %p\n",vcc);
157         lock_sock(sk);
158         if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) {
159                 error = -EINVAL;
160                 goto out;
161         }
162
163         switch (sock->state) {
164         default:
165                 error = -EINVAL;
166                 goto out;
167         case SS_CONNECTED:
168                 error = -EISCONN;
169                 goto out;
170         case SS_CONNECTING:
171                 if (test_bit(ATM_VF_WAITING, &vcc->flags)) {
172                         error = -EALREADY;
173                         goto out;
174                 }
175                 sock->state = SS_UNCONNECTED;
176                 if (sk->sk_err) {
177                         error = -sk->sk_err;
178                         goto out;
179                 }
180                 break;
181         case SS_UNCONNECTED:
182                 addr = (struct sockaddr_atmsvc *) sockaddr;
183                 if (addr->sas_family != AF_ATMSVC) {
184                         error = -EAFNOSUPPORT;
185                         goto out;
186                 }
187                 if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
188                         error = -EBADFD;
189                         goto out;
190                 }
191                 if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
192                     vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) {
193                         error = -EINVAL;
194                         goto out;
195                 }
196                 if (!vcc->qos.txtp.traffic_class &&
197                     !vcc->qos.rxtp.traffic_class) {
198                         error = -EINVAL;
199                         goto out;
200                 }
201                 vcc->remote = *addr;
202                 set_bit(ATM_VF_WAITING, &vcc->flags);
203                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
204                 sigd_enq(vcc,as_connect,NULL,NULL,&vcc->remote);
205                 if (flags & O_NONBLOCK) {
206                         finish_wait(sk->sk_sleep, &wait);
207                         sock->state = SS_CONNECTING;
208                         error = -EINPROGRESS;
209                         goto out;
210                 }
211                 error = 0;
212                 while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
213                         schedule();
214                         if (!signal_pending(current)) {
215                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
216                                 continue;
217                         }
218                         pr_debug("*ABORT*\n");
219                         /*
220                          * This is tricky:
221                          *   Kernel ---close--> Demon
222                          *   Kernel <--close--- Demon
223                          * or
224                          *   Kernel ---close--> Demon
225                          *   Kernel <--error--- Demon
226                          * or
227                          *   Kernel ---close--> Demon
228                          *   Kernel <--okay---- Demon
229                          *   Kernel <--close--- Demon
230                          */
231                         sigd_enq(vcc,as_close,NULL,NULL,NULL);
232                         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
233                                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
234                                 schedule();
235                         }
236                         if (!sk->sk_err)
237                                 while (!test_bit(ATM_VF_RELEASED,&vcc->flags)
238                                     && sigd) {
239                                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
240                                         schedule();
241                                 }
242                         clear_bit(ATM_VF_REGIS,&vcc->flags);
243                         clear_bit(ATM_VF_RELEASED,&vcc->flags);
244                         clear_bit(ATM_VF_CLOSE,&vcc->flags);
245                             /* we're gone now but may connect later */
246                         error = -EINTR;
247                         break;
248                 }
249                 finish_wait(sk->sk_sleep, &wait);
250                 if (error)
251                         goto out;
252                 if (!sigd) {
253                         error = -EUNATCH;
254                         goto out;
255                 }
256                 if (sk->sk_err) {
257                         error = -sk->sk_err;
258                         goto out;
259                 }
260         }
261 /*
262  * Not supported yet
263  *
264  * #ifndef CONFIG_SINGLE_SIGITF
265  */
266         vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp);
267         vcc->qos.txtp.pcr = 0;
268         vcc->qos.txtp.min_pcr = 0;
269 /*
270  * #endif
271  */
272         if (!(error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci)))
273                 sock->state = SS_CONNECTED;
274         else
275                 (void) svc_disconnect(vcc);
276 out:
277         release_sock(sk);
278         return error;
279 }
280
281
282 static int svc_listen(struct socket *sock,int backlog)
283 {
284         DEFINE_WAIT(wait);
285         struct sock *sk = sock->sk;
286         struct atm_vcc *vcc = ATM_SD(sock);
287         int error;
288
289         pr_debug("svc_listen %p\n",vcc);
290         lock_sock(sk);
291         /* let server handle listen on unbound sockets */
292         if (test_bit(ATM_VF_SESSION,&vcc->flags)) {
293                 error = -EINVAL;
294                 goto out;
295         }
296         if (test_bit(ATM_VF_LISTEN, &vcc->flags)) {
297                 error = -EADDRINUSE;
298                 goto out;
299         }
300         set_bit(ATM_VF_WAITING, &vcc->flags);
301         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
302         sigd_enq(vcc,as_listen,NULL,NULL,&vcc->local);
303         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
304                 schedule();
305                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
306         }
307         finish_wait(sk->sk_sleep, &wait);
308         if (!sigd) {
309                 error = -EUNATCH;
310                 goto out;
311         }
312         set_bit(ATM_VF_LISTEN,&vcc->flags);
313         vcc_insert_socket(sk);
314         sk->sk_max_ack_backlog = backlog > 0 ? backlog : ATM_BACKLOG_DEFAULT;
315         error = -sk->sk_err;
316 out:
317         release_sock(sk);
318         return error;
319 }
320
321
322 static int svc_accept(struct socket *sock,struct socket *newsock,int flags)
323 {
324         struct sock *sk = sock->sk;
325         struct sk_buff *skb;
326         struct atmsvc_msg *msg;
327         struct atm_vcc *old_vcc = ATM_SD(sock);
328         struct atm_vcc *new_vcc;
329         int error;
330
331         lock_sock(sk);
332
333         error = svc_create(sock_net(sk), newsock,0);
334         if (error)
335                 goto out;
336
337         new_vcc = ATM_SD(newsock);
338
339         pr_debug("svc_accept %p -> %p\n",old_vcc,new_vcc);
340         while (1) {
341                 DEFINE_WAIT(wait);
342
343                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
344                 while (!(skb = skb_dequeue(&sk->sk_receive_queue)) &&
345                        sigd) {
346                         if (test_bit(ATM_VF_RELEASED,&old_vcc->flags)) break;
347                         if (test_bit(ATM_VF_CLOSE,&old_vcc->flags)) {
348                                 error = -sk->sk_err;
349                                 break;
350                         }
351                         if (flags & O_NONBLOCK) {
352                                 error = -EAGAIN;
353                                 break;
354                         }
355                         release_sock(sk);
356                         schedule();
357                         lock_sock(sk);
358                         if (signal_pending(current)) {
359                                 error = -ERESTARTSYS;
360                                 break;
361                         }
362                         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
363                 }
364                 finish_wait(sk->sk_sleep, &wait);
365                 if (error)
366                         goto out;
367                 if (!skb) {
368                         error = -EUNATCH;
369                         goto out;
370                 }
371                 msg = (struct atmsvc_msg *) skb->data;
372                 new_vcc->qos = msg->qos;
373                 set_bit(ATM_VF_HASQOS,&new_vcc->flags);
374                 new_vcc->remote = msg->svc;
375                 new_vcc->local = msg->local;
376                 new_vcc->sap = msg->sap;
377                 error = vcc_connect(newsock, msg->pvc.sap_addr.itf,
378                                     msg->pvc.sap_addr.vpi, msg->pvc.sap_addr.vci);
379                 dev_kfree_skb(skb);
380                 sk->sk_ack_backlog--;
381                 if (error) {
382                         sigd_enq2(NULL,as_reject,old_vcc,NULL,NULL,
383                             &old_vcc->qos,error);
384                         error = error == -EAGAIN ? -EBUSY : error;
385                         goto out;
386                 }
387                 /* wait should be short, so we ignore the non-blocking flag */
388                 set_bit(ATM_VF_WAITING, &new_vcc->flags);
389                 prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
390                 sigd_enq(new_vcc,as_accept,old_vcc,NULL,NULL);
391                 while (test_bit(ATM_VF_WAITING, &new_vcc->flags) && sigd) {
392                         release_sock(sk);
393                         schedule();
394                         lock_sock(sk);
395                         prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
396                 }
397                 finish_wait(sk_atm(new_vcc)->sk_sleep, &wait);
398                 if (!sigd) {
399                         error = -EUNATCH;
400                         goto out;
401                 }
402                 if (!sk_atm(new_vcc)->sk_err)
403                         break;
404                 if (sk_atm(new_vcc)->sk_err != ERESTARTSYS) {
405                         error = -sk_atm(new_vcc)->sk_err;
406                         goto out;
407                 }
408         }
409         newsock->state = SS_CONNECTED;
410 out:
411         release_sock(sk);
412         return error;
413 }
414
415
416 static int svc_getname(struct socket *sock,struct sockaddr *sockaddr,
417     int *sockaddr_len,int peer)
418 {
419         struct sockaddr_atmsvc *addr;
420
421         *sockaddr_len = sizeof(struct sockaddr_atmsvc);
422         addr = (struct sockaddr_atmsvc *) sockaddr;
423         memcpy(addr,peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
424             sizeof(struct sockaddr_atmsvc));
425         return 0;
426 }
427
428
429 int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos)
430 {
431         struct sock *sk = sk_atm(vcc);
432         DEFINE_WAIT(wait);
433
434         set_bit(ATM_VF_WAITING, &vcc->flags);
435         prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
436         sigd_enq2(vcc,as_modify,NULL,NULL,&vcc->local,qos,0);
437         while (test_bit(ATM_VF_WAITING, &vcc->flags) &&
438                !test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) {
439                 schedule();
440                 prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
441         }
442         finish_wait(sk->sk_sleep, &wait);
443         if (!sigd) return -EUNATCH;
444         return -sk->sk_err;
445 }
446
447
448 static int svc_setsockopt(struct socket *sock, int level, int optname,
449                           char __user *optval, int optlen)
450 {
451         struct sock *sk = sock->sk;
452         struct atm_vcc *vcc = ATM_SD(sock);
453         int value, error = 0;
454
455         lock_sock(sk);
456         switch (optname) {
457                 case SO_ATMSAP:
458                         if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) {
459                                 error = -EINVAL;
460                                 goto out;
461                         }
462                         if (copy_from_user(&vcc->sap, optval, optlen)) {
463                                 error = -EFAULT;
464                                 goto out;
465                         }
466                         set_bit(ATM_VF_HASSAP, &vcc->flags);
467                         break;
468                 case SO_MULTIPOINT:
469                         if (level != SOL_ATM || optlen != sizeof(int)) {
470                                 error = -EINVAL;
471                                 goto out;
472                         }
473                         if (get_user(value, (int __user *) optval)) {
474                                 error = -EFAULT;
475                                 goto out;
476                         }
477                         if (value == 1) {
478                                 set_bit(ATM_VF_SESSION, &vcc->flags);
479                         } else if (value == 0) {
480                                 clear_bit(ATM_VF_SESSION, &vcc->flags);
481                         } else {
482                                 error = -EINVAL;
483                         }
484                         break;
485                 default:
486                         error = vcc_setsockopt(sock, level, optname,
487                                                optval, optlen);
488         }
489
490 out:
491         release_sock(sk);
492         return error;
493 }
494
495
496 static int svc_getsockopt(struct socket *sock,int level,int optname,
497     char __user *optval,int __user *optlen)
498 {
499         struct sock *sk = sock->sk;
500         int error = 0, len;
501
502         lock_sock(sk);
503         if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) {
504                 error = vcc_getsockopt(sock, level, optname, optval, optlen);
505                 goto out;
506         }
507         if (get_user(len, optlen)) {
508                 error = -EFAULT;
509                 goto out;
510         }
511         if (len != sizeof(struct atm_sap)) {
512                 error = -EINVAL;
513                 goto out;
514         }
515         if (copy_to_user(optval, &ATM_SD(sock)->sap, sizeof(struct atm_sap))) {
516                 error = -EFAULT;
517                 goto out;
518         }
519 out:
520         release_sock(sk);
521         return error;
522 }
523
524
525 static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr,
526                         int sockaddr_len, int flags)
527 {
528         DEFINE_WAIT(wait);
529         struct sock *sk = sock->sk;
530         struct atm_vcc *vcc = ATM_SD(sock);
531         int error;
532
533         lock_sock(sk);
534         set_bit(ATM_VF_WAITING, &vcc->flags);
535         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
536         sigd_enq(vcc, as_addparty, NULL, NULL,
537                  (struct sockaddr_atmsvc *) sockaddr);
538         if (flags & O_NONBLOCK) {
539                 finish_wait(sk->sk_sleep, &wait);
540                 error = -EINPROGRESS;
541                 goto out;
542         }
543         pr_debug("svc_addparty added wait queue\n");
544         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
545                 schedule();
546                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
547         }
548         finish_wait(sk->sk_sleep, &wait);
549         error = xchg(&sk->sk_err_soft, 0);
550 out:
551         release_sock(sk);
552         return error;
553 }
554
555
556 static int svc_dropparty(struct socket *sock, int ep_ref)
557 {
558         DEFINE_WAIT(wait);
559         struct sock *sk = sock->sk;
560         struct atm_vcc *vcc = ATM_SD(sock);
561         int error;
562
563         lock_sock(sk);
564         set_bit(ATM_VF_WAITING, &vcc->flags);
565         prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
566         sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref);
567         while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
568                 schedule();
569                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
570         }
571         finish_wait(sk->sk_sleep, &wait);
572         if (!sigd) {
573                 error = -EUNATCH;
574                 goto out;
575         }
576         error = xchg(&sk->sk_err_soft, 0);
577 out:
578         release_sock(sk);
579         return error;
580 }
581
582
583 static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
584 {
585         int error, ep_ref;
586         struct sockaddr_atmsvc sa;
587         struct atm_vcc *vcc = ATM_SD(sock);
588
589         switch (cmd) {
590                 case ATM_ADDPARTY:
591                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
592                                 return -EINVAL;
593                         if (copy_from_user(&sa, (void __user *) arg, sizeof(sa)))
594                                 return -EFAULT;
595                         error = svc_addparty(sock, (struct sockaddr *) &sa, sizeof(sa), 0);
596                         break;
597                 case ATM_DROPPARTY:
598                         if (!test_bit(ATM_VF_SESSION, &vcc->flags))
599                                 return -EINVAL;
600                         if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int)))
601                                 return -EFAULT;
602                         error = svc_dropparty(sock, ep_ref);
603                         break;
604                 default:
605                         error = vcc_ioctl(sock, cmd, arg);
606         }
607
608         return error;
609 }
610
611 #ifdef CONFIG_COMPAT
612 static int svc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
613 {
614         /* The definition of ATM_ADDPARTY uses the size of struct atm_iobuf.
615            But actually it takes a struct sockaddr_atmsvc, which doesn't need
616            compat handling. So all we have to do is fix up cmd... */
617         if (cmd == COMPAT_ATM_ADDPARTY)
618                 cmd = ATM_ADDPARTY;
619
620         if (cmd == ATM_ADDPARTY || cmd == ATM_DROPPARTY)
621                 return svc_ioctl(sock, cmd, arg);
622         else
623                 return vcc_compat_ioctl(sock, cmd, arg);
624 }
625 #endif /* CONFIG_COMPAT */
626
627 static const struct proto_ops svc_proto_ops = {
628         .family =       PF_ATMSVC,
629         .owner =        THIS_MODULE,
630
631         .release =      svc_release,
632         .bind =         svc_bind,
633         .connect =      svc_connect,
634         .socketpair =   sock_no_socketpair,
635         .accept =       svc_accept,
636         .getname =      svc_getname,
637         .poll =         vcc_poll,
638         .ioctl =        svc_ioctl,
639 #ifdef CONFIG_COMPAT
640         .compat_ioctl = svc_compat_ioctl,
641 #endif
642         .listen =       svc_listen,
643         .shutdown =     svc_shutdown,
644         .setsockopt =   svc_setsockopt,
645         .getsockopt =   svc_getsockopt,
646         .sendmsg =      vcc_sendmsg,
647         .recvmsg =      vcc_recvmsg,
648         .mmap =         sock_no_mmap,
649         .sendpage =     sock_no_sendpage,
650 };
651
652
653 static int svc_create(struct net *net, struct socket *sock,int protocol)
654 {
655         int error;
656
657         if (net != &init_net)
658                 return -EAFNOSUPPORT;
659
660         sock->ops = &svc_proto_ops;
661         error = vcc_create(net, sock, protocol, AF_ATMSVC);
662         if (error) return error;
663         ATM_SD(sock)->local.sas_family = AF_ATMSVC;
664         ATM_SD(sock)->remote.sas_family = AF_ATMSVC;
665         return 0;
666 }
667
668
669 static struct net_proto_family svc_family_ops = {
670         .family = PF_ATMSVC,
671         .create = svc_create,
672         .owner = THIS_MODULE,
673 };
674
675
676 /*
677  *      Initialize the ATM SVC protocol family
678  */
679
680 int __init atmsvc_init(void)
681 {
682         return sock_register(&svc_family_ops);
683 }
684
685 void atmsvc_exit(void)
686 {
687         sock_unregister(PF_ATMSVC);
688 }