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18#include <linux/mISDNif.h>
19#include <linux/slab.h>
20#include <linux/export.h>
21#include "core.h"
22
23static u_int *debug;
24
25static struct proto mISDN_proto = {
26 .name = "misdn",
27 .owner = THIS_MODULE,
28 .obj_size = sizeof(struct mISDN_sock)
29};
30
31#define _pms(sk) ((struct mISDN_sock *)sk)
32
33static struct mISDN_sock_list data_sockets = {
34 .lock = __RW_LOCK_UNLOCKED(data_sockets.lock)
35};
36
37static struct mISDN_sock_list base_sockets = {
38 .lock = __RW_LOCK_UNLOCKED(base_sockets.lock)
39};
40
41#define L2_HEADER_LEN 4
42
43static inline struct sk_buff *
44_l2_alloc_skb(unsigned int len, gfp_t gfp_mask)
45{
46 struct sk_buff *skb;
47
48 skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask);
49 if (likely(skb))
50 skb_reserve(skb, L2_HEADER_LEN);
51 return skb;
52}
53
54static void
55mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk)
56{
57 write_lock_bh(&l->lock);
58 sk_add_node(sk, &l->head);
59 write_unlock_bh(&l->lock);
60}
61
62static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk)
63{
64 write_lock_bh(&l->lock);
65 sk_del_node_init(sk);
66 write_unlock_bh(&l->lock);
67}
68
69static int
70mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb)
71{
72 struct mISDN_sock *msk;
73 int err;
74
75 msk = container_of(ch, struct mISDN_sock, ch);
76 if (*debug & DEBUG_SOCKET)
77 printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb);
78 if (msk->sk.sk_state == MISDN_CLOSED)
79 return -EUNATCH;
80 __net_timestamp(skb);
81 err = sock_queue_rcv_skb(&msk->sk, skb);
82 if (err)
83 printk(KERN_WARNING "%s: error %d\n", __func__, err);
84 return err;
85}
86
87static int
88mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
89{
90 struct mISDN_sock *msk;
91
92 msk = container_of(ch, struct mISDN_sock, ch);
93 if (*debug & DEBUG_SOCKET)
94 printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg);
95 switch (cmd) {
96 case CLOSE_CHANNEL:
97 msk->sk.sk_state = MISDN_CLOSED;
98 break;
99 }
100 return 0;
101}
102
103static inline void
104mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
105{
106 struct timeval tv;
107
108 if (_pms(sk)->cmask & MISDN_TIME_STAMP) {
109 skb_get_timestamp(skb, &tv);
110 put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv);
111 }
112}
113
114static int
115mISDN_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
116 int flags)
117{
118 struct sk_buff *skb;
119 struct sock *sk = sock->sk;
120
121 int copied, err;
122
123 if (*debug & DEBUG_SOCKET)
124 printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n",
125 __func__, (int)len, flags, _pms(sk)->ch.nr,
126 sk->sk_protocol);
127 if (flags & (MSG_OOB))
128 return -EOPNOTSUPP;
129
130 if (sk->sk_state == MISDN_CLOSED)
131 return 0;
132
133 skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err);
134 if (!skb)
135 return err;
136
137 if (msg->msg_name) {
138 DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name);
139
140 maddr->family = AF_ISDN;
141 maddr->dev = _pms(sk)->dev->id;
142 if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
143 (sk->sk_protocol == ISDN_P_LAPD_NT)) {
144 maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff;
145 maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff;
146 maddr->sapi = mISDN_HEAD_ID(skb) & 0xff;
147 } else {
148 maddr->channel = _pms(sk)->ch.nr;
149 maddr->sapi = _pms(sk)->ch.addr & 0xFF;
150 maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF;
151 }
152 msg->msg_namelen = sizeof(*maddr);
153 }
154
155 copied = skb->len + MISDN_HEADER_LEN;
156 if (len < copied) {
157 if (flags & MSG_PEEK)
158 refcount_dec(&skb->users);
159 else
160 skb_queue_head(&sk->sk_receive_queue, skb);
161 return -ENOSPC;
162 }
163 memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb),
164 MISDN_HEADER_LEN);
165
166 err = skb_copy_datagram_msg(skb, 0, msg, copied);
167
168 mISDN_sock_cmsg(sk, msg, skb);
169
170 skb_free_datagram(sk, skb);
171
172 return err ? : copied;
173}
174
175static int
176mISDN_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
177{
178 struct sock *sk = sock->sk;
179 struct sk_buff *skb;
180 int err = -ENOMEM;
181
182 if (*debug & DEBUG_SOCKET)
183 printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n",
184 __func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr,
185 sk->sk_protocol);
186
187 if (msg->msg_flags & MSG_OOB)
188 return -EOPNOTSUPP;
189
190 if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE))
191 return -EINVAL;
192
193 if (len < MISDN_HEADER_LEN)
194 return -EINVAL;
195
196 if (sk->sk_state != MISDN_BOUND)
197 return -EBADFD;
198
199 lock_sock(sk);
200
201 skb = _l2_alloc_skb(len, GFP_KERNEL);
202 if (!skb)
203 goto done;
204
205 if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
206 err = -EFAULT;
207 goto done;
208 }
209
210 memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN);
211 skb_pull(skb, MISDN_HEADER_LEN);
212
213 if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) {
214
215 DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name);
216 mISDN_HEAD_ID(skb) = maddr->channel;
217 } else {
218 if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
219 (sk->sk_protocol == ISDN_P_LAPD_NT))
220 mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr;
221 }
222
223 if (*debug & DEBUG_SOCKET)
224 printk(KERN_DEBUG "%s: ID:%x\n",
225 __func__, mISDN_HEAD_ID(skb));
226
227 err = -ENODEV;
228 if (!_pms(sk)->ch.peer)
229 goto done;
230 err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb);
231 if (err)
232 goto done;
233 else {
234 skb = NULL;
235 err = len;
236 }
237
238done:
239 if (skb)
240 kfree_skb(skb);
241 release_sock(sk);
242 return err;
243}
244
245static int
246data_sock_release(struct socket *sock)
247{
248 struct sock *sk = sock->sk;
249
250 if (*debug & DEBUG_SOCKET)
251 printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
252 if (!sk)
253 return 0;
254 switch (sk->sk_protocol) {
255 case ISDN_P_TE_S0:
256 case ISDN_P_NT_S0:
257 case ISDN_P_TE_E1:
258 case ISDN_P_NT_E1:
259 if (sk->sk_state == MISDN_BOUND)
260 delete_channel(&_pms(sk)->ch);
261 else
262 mISDN_sock_unlink(&data_sockets, sk);
263 break;
264 case ISDN_P_LAPD_TE:
265 case ISDN_P_LAPD_NT:
266 case ISDN_P_B_RAW:
267 case ISDN_P_B_HDLC:
268 case ISDN_P_B_X75SLP:
269 case ISDN_P_B_L2DTMF:
270 case ISDN_P_B_L2DSP:
271 case ISDN_P_B_L2DSPHDLC:
272 delete_channel(&_pms(sk)->ch);
273 mISDN_sock_unlink(&data_sockets, sk);
274 break;
275 }
276
277 lock_sock(sk);
278
279 sock_orphan(sk);
280 skb_queue_purge(&sk->sk_receive_queue);
281
282 release_sock(sk);
283 sock_put(sk);
284
285 return 0;
286}
287
288static int
289data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p)
290{
291 struct mISDN_ctrl_req cq;
292 int err = -EINVAL, val[2];
293 struct mISDNchannel *bchan, *next;
294
295 lock_sock(sk);
296 if (!_pms(sk)->dev) {
297 err = -ENODEV;
298 goto done;
299 }
300 switch (cmd) {
301 case IMCTRLREQ:
302 if (copy_from_user(&cq, p, sizeof(cq))) {
303 err = -EFAULT;
304 break;
305 }
306 if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) {
307 list_for_each_entry_safe(bchan, next,
308 &_pms(sk)->dev->bchannels, list) {
309 if (bchan->nr == cq.channel) {
310 err = bchan->ctrl(bchan,
311 CONTROL_CHANNEL, &cq);
312 break;
313 }
314 }
315 } else
316 err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D,
317 CONTROL_CHANNEL, &cq);
318 if (err)
319 break;
320 if (copy_to_user(p, &cq, sizeof(cq)))
321 err = -EFAULT;
322 break;
323 case IMCLEAR_L2:
324 if (sk->sk_protocol != ISDN_P_LAPD_NT) {
325 err = -EINVAL;
326 break;
327 }
328 val[0] = cmd;
329 if (get_user(val[1], (int __user *)p)) {
330 err = -EFAULT;
331 break;
332 }
333 err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
334 CONTROL_CHANNEL, val);
335 break;
336 case IMHOLD_L1:
337 if (sk->sk_protocol != ISDN_P_LAPD_NT
338 && sk->sk_protocol != ISDN_P_LAPD_TE) {
339 err = -EINVAL;
340 break;
341 }
342 val[0] = cmd;
343 if (get_user(val[1], (int __user *)p)) {
344 err = -EFAULT;
345 break;
346 }
347 err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
348 CONTROL_CHANNEL, val);
349 break;
350 default:
351 err = -EINVAL;
352 break;
353 }
354done:
355 release_sock(sk);
356 return err;
357}
358
359static int
360data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
361{
362 int err = 0, id;
363 struct sock *sk = sock->sk;
364 struct mISDNdevice *dev;
365 struct mISDNversion ver;
366
367 switch (cmd) {
368 case IMGETVERSION:
369 ver.major = MISDN_MAJOR_VERSION;
370 ver.minor = MISDN_MINOR_VERSION;
371 ver.release = MISDN_RELEASE;
372 if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
373 err = -EFAULT;
374 break;
375 case IMGETCOUNT:
376 id = get_mdevice_count();
377 if (put_user(id, (int __user *)arg))
378 err = -EFAULT;
379 break;
380 case IMGETDEVINFO:
381 if (get_user(id, (int __user *)arg)) {
382 err = -EFAULT;
383 break;
384 }
385 dev = get_mdevice(id);
386 if (dev) {
387 struct mISDN_devinfo di;
388
389 memset(&di, 0, sizeof(di));
390 di.id = dev->id;
391 di.Dprotocols = dev->Dprotocols;
392 di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
393 di.protocol = dev->D.protocol;
394 memcpy(di.channelmap, dev->channelmap,
395 sizeof(di.channelmap));
396 di.nrbchan = dev->nrbchan;
397 strcpy(di.name, dev_name(&dev->dev));
398 if (copy_to_user((void __user *)arg, &di, sizeof(di)))
399 err = -EFAULT;
400 } else
401 err = -ENODEV;
402 break;
403 default:
404 if (sk->sk_state == MISDN_BOUND)
405 err = data_sock_ioctl_bound(sk, cmd,
406 (void __user *)arg);
407 else
408 err = -ENOTCONN;
409 }
410 return err;
411}
412
413static int data_sock_setsockopt(struct socket *sock, int level, int optname,
414 char __user *optval, unsigned int len)
415{
416 struct sock *sk = sock->sk;
417 int err = 0, opt = 0;
418
419 if (*debug & DEBUG_SOCKET)
420 printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock,
421 level, optname, optval, len);
422
423 lock_sock(sk);
424
425 switch (optname) {
426 case MISDN_TIME_STAMP:
427 if (get_user(opt, (int __user *)optval)) {
428 err = -EFAULT;
429 break;
430 }
431
432 if (opt)
433 _pms(sk)->cmask |= MISDN_TIME_STAMP;
434 else
435 _pms(sk)->cmask &= ~MISDN_TIME_STAMP;
436 break;
437 default:
438 err = -ENOPROTOOPT;
439 break;
440 }
441 release_sock(sk);
442 return err;
443}
444
445static int data_sock_getsockopt(struct socket *sock, int level, int optname,
446 char __user *optval, int __user *optlen)
447{
448 struct sock *sk = sock->sk;
449 int len, opt;
450
451 if (get_user(len, optlen))
452 return -EFAULT;
453
454 if (len != sizeof(char))
455 return -EINVAL;
456
457 switch (optname) {
458 case MISDN_TIME_STAMP:
459 if (_pms(sk)->cmask & MISDN_TIME_STAMP)
460 opt = 1;
461 else
462 opt = 0;
463
464 if (put_user(opt, optval))
465 return -EFAULT;
466 break;
467 default:
468 return -ENOPROTOOPT;
469 }
470
471 return 0;
472}
473
474static int
475data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
476{
477 struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
478 struct sock *sk = sock->sk;
479 struct sock *csk;
480 int err = 0;
481
482 if (*debug & DEBUG_SOCKET)
483 printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
484 if (addr_len != sizeof(struct sockaddr_mISDN))
485 return -EINVAL;
486 if (!maddr || maddr->family != AF_ISDN)
487 return -EINVAL;
488
489 lock_sock(sk);
490
491 if (_pms(sk)->dev) {
492 err = -EALREADY;
493 goto done;
494 }
495 _pms(sk)->dev = get_mdevice(maddr->dev);
496 if (!_pms(sk)->dev) {
497 err = -ENODEV;
498 goto done;
499 }
500
501 if (sk->sk_protocol < ISDN_P_B_START) {
502 read_lock_bh(&data_sockets.lock);
503 sk_for_each(csk, &data_sockets.head) {
504 if (sk == csk)
505 continue;
506 if (_pms(csk)->dev != _pms(sk)->dev)
507 continue;
508 if (csk->sk_protocol >= ISDN_P_B_START)
509 continue;
510 if (IS_ISDN_P_TE(csk->sk_protocol)
511 == IS_ISDN_P_TE(sk->sk_protocol))
512 continue;
513 read_unlock_bh(&data_sockets.lock);
514 err = -EBUSY;
515 goto done;
516 }
517 read_unlock_bh(&data_sockets.lock);
518 }
519
520 _pms(sk)->ch.send = mISDN_send;
521 _pms(sk)->ch.ctrl = mISDN_ctrl;
522
523 switch (sk->sk_protocol) {
524 case ISDN_P_TE_S0:
525 case ISDN_P_NT_S0:
526 case ISDN_P_TE_E1:
527 case ISDN_P_NT_E1:
528 mISDN_sock_unlink(&data_sockets, sk);
529 err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch,
530 sk->sk_protocol, maddr);
531 if (err)
532 mISDN_sock_link(&data_sockets, sk);
533 break;
534 case ISDN_P_LAPD_TE:
535 case ISDN_P_LAPD_NT:
536 err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch,
537 sk->sk_protocol, maddr);
538 break;
539 case ISDN_P_B_RAW:
540 case ISDN_P_B_HDLC:
541 case ISDN_P_B_X75SLP:
542 case ISDN_P_B_L2DTMF:
543 case ISDN_P_B_L2DSP:
544 case ISDN_P_B_L2DSPHDLC:
545 err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch,
546 sk->sk_protocol, maddr);
547 break;
548 default:
549 err = -EPROTONOSUPPORT;
550 }
551 if (err)
552 goto done;
553 sk->sk_state = MISDN_BOUND;
554 _pms(sk)->ch.protocol = sk->sk_protocol;
555
556done:
557 release_sock(sk);
558 return err;
559}
560
561static int
562data_sock_getname(struct socket *sock, struct sockaddr *addr,
563 int peer)
564{
565 struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
566 struct sock *sk = sock->sk;
567
568 if (!_pms(sk)->dev)
569 return -EBADFD;
570
571 lock_sock(sk);
572
573 maddr->family = AF_ISDN;
574 maddr->dev = _pms(sk)->dev->id;
575 maddr->channel = _pms(sk)->ch.nr;
576 maddr->sapi = _pms(sk)->ch.addr & 0xff;
577 maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff;
578 release_sock(sk);
579 return sizeof(*maddr);
580}
581
582static const struct proto_ops data_sock_ops = {
583 .family = PF_ISDN,
584 .owner = THIS_MODULE,
585 .release = data_sock_release,
586 .ioctl = data_sock_ioctl,
587 .bind = data_sock_bind,
588 .getname = data_sock_getname,
589 .sendmsg = mISDN_sock_sendmsg,
590 .recvmsg = mISDN_sock_recvmsg,
591 .poll = datagram_poll,
592 .listen = sock_no_listen,
593 .shutdown = sock_no_shutdown,
594 .setsockopt = data_sock_setsockopt,
595 .getsockopt = data_sock_getsockopt,
596 .connect = sock_no_connect,
597 .socketpair = sock_no_socketpair,
598 .accept = sock_no_accept,
599 .mmap = sock_no_mmap
600};
601
602static int
603data_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
604{
605 struct sock *sk;
606
607 if (sock->type != SOCK_DGRAM)
608 return -ESOCKTNOSUPPORT;
609
610 sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
611 if (!sk)
612 return -ENOMEM;
613
614 sock_init_data(sock, sk);
615
616 sock->ops = &data_sock_ops;
617 sock->state = SS_UNCONNECTED;
618 sock_reset_flag(sk, SOCK_ZAPPED);
619
620 sk->sk_protocol = protocol;
621 sk->sk_state = MISDN_OPEN;
622 mISDN_sock_link(&data_sockets, sk);
623
624 return 0;
625}
626
627static int
628base_sock_release(struct socket *sock)
629{
630 struct sock *sk = sock->sk;
631
632 printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
633 if (!sk)
634 return 0;
635
636 mISDN_sock_unlink(&base_sockets, sk);
637 sock_orphan(sk);
638 sock_put(sk);
639
640 return 0;
641}
642
643static int
644base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
645{
646 int err = 0, id;
647 struct mISDNdevice *dev;
648 struct mISDNversion ver;
649
650 switch (cmd) {
651 case IMGETVERSION:
652 ver.major = MISDN_MAJOR_VERSION;
653 ver.minor = MISDN_MINOR_VERSION;
654 ver.release = MISDN_RELEASE;
655 if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
656 err = -EFAULT;
657 break;
658 case IMGETCOUNT:
659 id = get_mdevice_count();
660 if (put_user(id, (int __user *)arg))
661 err = -EFAULT;
662 break;
663 case IMGETDEVINFO:
664 if (get_user(id, (int __user *)arg)) {
665 err = -EFAULT;
666 break;
667 }
668 dev = get_mdevice(id);
669 if (dev) {
670 struct mISDN_devinfo di;
671
672 memset(&di, 0, sizeof(di));
673 di.id = dev->id;
674 di.Dprotocols = dev->Dprotocols;
675 di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
676 di.protocol = dev->D.protocol;
677 memcpy(di.channelmap, dev->channelmap,
678 sizeof(di.channelmap));
679 di.nrbchan = dev->nrbchan;
680 strcpy(di.name, dev_name(&dev->dev));
681 if (copy_to_user((void __user *)arg, &di, sizeof(di)))
682 err = -EFAULT;
683 } else
684 err = -ENODEV;
685 break;
686 case IMSETDEVNAME:
687 {
688 struct mISDN_devrename dn;
689 if (copy_from_user(&dn, (void __user *)arg,
690 sizeof(dn))) {
691 err = -EFAULT;
692 break;
693 }
694 dev = get_mdevice(dn.id);
695 if (dev)
696 err = device_rename(&dev->dev, dn.name);
697 else
698 err = -ENODEV;
699 }
700 break;
701 default:
702 err = -EINVAL;
703 }
704 return err;
705}
706
707static int
708base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
709{
710 struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
711 struct sock *sk = sock->sk;
712 int err = 0;
713
714 if (!maddr || maddr->family != AF_ISDN)
715 return -EINVAL;
716
717 if (addr_len < sizeof(struct sockaddr_mISDN))
718 return -EINVAL;
719
720 lock_sock(sk);
721
722 if (_pms(sk)->dev) {
723 err = -EALREADY;
724 goto done;
725 }
726
727 _pms(sk)->dev = get_mdevice(maddr->dev);
728 if (!_pms(sk)->dev) {
729 err = -ENODEV;
730 goto done;
731 }
732 sk->sk_state = MISDN_BOUND;
733
734done:
735 release_sock(sk);
736 return err;
737}
738
739static const struct proto_ops base_sock_ops = {
740 .family = PF_ISDN,
741 .owner = THIS_MODULE,
742 .release = base_sock_release,
743 .ioctl = base_sock_ioctl,
744 .bind = base_sock_bind,
745 .getname = sock_no_getname,
746 .sendmsg = sock_no_sendmsg,
747 .recvmsg = sock_no_recvmsg,
748 .listen = sock_no_listen,
749 .shutdown = sock_no_shutdown,
750 .setsockopt = sock_no_setsockopt,
751 .getsockopt = sock_no_getsockopt,
752 .connect = sock_no_connect,
753 .socketpair = sock_no_socketpair,
754 .accept = sock_no_accept,
755 .mmap = sock_no_mmap
756};
757
758
759static int
760base_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
761{
762 struct sock *sk;
763
764 if (sock->type != SOCK_RAW)
765 return -ESOCKTNOSUPPORT;
766 if (!capable(CAP_NET_RAW))
767 return -EPERM;
768
769 sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
770 if (!sk)
771 return -ENOMEM;
772
773 sock_init_data(sock, sk);
774 sock->ops = &base_sock_ops;
775 sock->state = SS_UNCONNECTED;
776 sock_reset_flag(sk, SOCK_ZAPPED);
777 sk->sk_protocol = protocol;
778 sk->sk_state = MISDN_OPEN;
779 mISDN_sock_link(&base_sockets, sk);
780
781 return 0;
782}
783
784static int
785mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern)
786{
787 int err = -EPROTONOSUPPORT;
788
789 switch (proto) {
790 case ISDN_P_BASE:
791 err = base_sock_create(net, sock, proto, kern);
792 break;
793 case ISDN_P_TE_S0:
794 case ISDN_P_NT_S0:
795 case ISDN_P_TE_E1:
796 case ISDN_P_NT_E1:
797 case ISDN_P_LAPD_TE:
798 case ISDN_P_LAPD_NT:
799 case ISDN_P_B_RAW:
800 case ISDN_P_B_HDLC:
801 case ISDN_P_B_X75SLP:
802 case ISDN_P_B_L2DTMF:
803 case ISDN_P_B_L2DSP:
804 case ISDN_P_B_L2DSPHDLC:
805 err = data_sock_create(net, sock, proto, kern);
806 break;
807 default:
808 return err;
809 }
810
811 return err;
812}
813
814static const struct net_proto_family mISDN_sock_family_ops = {
815 .owner = THIS_MODULE,
816 .family = PF_ISDN,
817 .create = mISDN_sock_create,
818};
819
820int
821misdn_sock_init(u_int *deb)
822{
823 int err;
824
825 debug = deb;
826 err = sock_register(&mISDN_sock_family_ops);
827 if (err)
828 printk(KERN_ERR "%s: error(%d)\n", __func__, err);
829 return err;
830}
831
832void
833misdn_sock_cleanup(void)
834{
835 sock_unregister(PF_ISDN);
836}
837
