1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27#include <linux/module.h>
28
29#include <linux/types.h>
30#include <linux/capability.h>
31#include <linux/errno.h>
32#include <linux/kernel.h>
33#include <linux/slab.h>
34#include <linux/poll.h>
35#include <linux/fcntl.h>
36#include <linux/init.h>
37#include <linux/skbuff.h>
38#include <linux/workqueue.h>
39#include <linux/interrupt.h>
40#include <linux/compat.h>
41#include <linux/socket.h>
42#include <linux/ioctl.h>
43#include <net/sock.h>
44
45#include <asm/system.h>
46#include <linux/uaccess.h>
47#include <asm/unaligned.h>
48
49#include <net/bluetooth/bluetooth.h>
50#include <net/bluetooth/hci_core.h>
51
52static int enable_mgmt;
53
54
55
56static inline int hci_test_bit(int nr, void *addr)
57{
58 return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31));
59}
60
61
62static struct hci_sec_filter hci_sec_filter = {
63
64 0x10,
65
66 { 0x1000d9fe, 0x0000b00c },
67
68 {
69 { 0x0 },
70
71 { 0xbe000006, 0x00000001, 0x00000000, 0x00 },
72
73 { 0x00005200, 0x00000000, 0x00000000, 0x00 },
74
75 { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 },
76
77 { 0x000002be, 0x00000000, 0x00000000, 0x00 },
78
79 { 0x000000ea, 0x00000000, 0x00000000, 0x00 }
80 }
81};
82
83static struct bt_sock_list hci_sk_list = {
84 .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock)
85};
86
87
88void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
89{
90 struct sock *sk;
91 struct hlist_node *node;
92
93 BT_DBG("hdev %p len %d", hdev, skb->len);
94
95 read_lock(&hci_sk_list.lock);
96 sk_for_each(sk, node, &hci_sk_list.head) {
97 struct hci_filter *flt;
98 struct sk_buff *nskb;
99
100 if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev)
101 continue;
102
103
104 if (skb->sk == sk)
105 continue;
106
107 if (bt_cb(skb)->channel != hci_pi(sk)->channel)
108 continue;
109
110 if (bt_cb(skb)->channel == HCI_CHANNEL_CONTROL)
111 goto clone;
112
113
114 flt = &hci_pi(sk)->filter;
115
116 if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ?
117 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask))
118 continue;
119
120 if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) {
121 register int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS);
122
123 if (!hci_test_bit(evt, &flt->event_mask))
124 continue;
125
126 if (flt->opcode &&
127 ((evt == HCI_EV_CMD_COMPLETE &&
128 flt->opcode !=
129 get_unaligned((__le16 *)(skb->data + 3))) ||
130 (evt == HCI_EV_CMD_STATUS &&
131 flt->opcode !=
132 get_unaligned((__le16 *)(skb->data + 4)))))
133 continue;
134 }
135
136clone:
137 nskb = skb_clone(skb, GFP_ATOMIC);
138 if (!nskb)
139 continue;
140
141
142 if (bt_cb(skb)->channel == HCI_CHANNEL_RAW)
143 memcpy(skb_push(nskb, 1), &bt_cb(nskb)->pkt_type, 1);
144
145 if (sock_queue_rcv_skb(sk, nskb))
146 kfree_skb(nskb);
147 }
148 read_unlock(&hci_sk_list.lock);
149}
150
151static int hci_sock_release(struct socket *sock)
152{
153 struct sock *sk = sock->sk;
154 struct hci_dev *hdev;
155
156 BT_DBG("sock %p sk %p", sock, sk);
157
158 if (!sk)
159 return 0;
160
161 hdev = hci_pi(sk)->hdev;
162
163 bt_sock_unlink(&hci_sk_list, sk);
164
165 if (hdev) {
166 atomic_dec(&hdev->promisc);
167 hci_dev_put(hdev);
168 }
169
170 sock_orphan(sk);
171
172 skb_queue_purge(&sk->sk_receive_queue);
173 skb_queue_purge(&sk->sk_write_queue);
174
175 sock_put(sk);
176 return 0;
177}
178
179struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr)
180{
181 struct list_head *p;
182
183 list_for_each(p, &hdev->blacklist) {
184 struct bdaddr_list *b;
185
186 b = list_entry(p, struct bdaddr_list, list);
187
188 if (bacmp(bdaddr, &b->bdaddr) == 0)
189 return b;
190 }
191
192 return NULL;
193}
194
195static int hci_blacklist_add(struct hci_dev *hdev, void __user *arg)
196{
197 bdaddr_t bdaddr;
198 struct bdaddr_list *entry;
199
200 if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
201 return -EFAULT;
202
203 if (bacmp(&bdaddr, BDADDR_ANY) == 0)
204 return -EBADF;
205
206 if (hci_blacklist_lookup(hdev, &bdaddr))
207 return -EEXIST;
208
209 entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
210 if (!entry)
211 return -ENOMEM;
212
213 bacpy(&entry->bdaddr, &bdaddr);
214
215 list_add(&entry->list, &hdev->blacklist);
216
217 return 0;
218}
219
220int hci_blacklist_clear(struct hci_dev *hdev)
221{
222 struct list_head *p, *n;
223
224 list_for_each_safe(p, n, &hdev->blacklist) {
225 struct bdaddr_list *b;
226
227 b = list_entry(p, struct bdaddr_list, list);
228
229 list_del(p);
230 kfree(b);
231 }
232
233 return 0;
234}
235
236static int hci_blacklist_del(struct hci_dev *hdev, void __user *arg)
237{
238 bdaddr_t bdaddr;
239 struct bdaddr_list *entry;
240
241 if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
242 return -EFAULT;
243
244 if (bacmp(&bdaddr, BDADDR_ANY) == 0)
245 return hci_blacklist_clear(hdev);
246
247 entry = hci_blacklist_lookup(hdev, &bdaddr);
248 if (!entry)
249 return -ENOENT;
250
251 list_del(&entry->list);
252 kfree(entry);
253
254 return 0;
255}
256
257
258static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
259{
260 struct hci_dev *hdev = hci_pi(sk)->hdev;
261
262 if (!hdev)
263 return -EBADFD;
264
265 switch (cmd) {
266 case HCISETRAW:
267 if (!capable(CAP_NET_ADMIN))
268 return -EACCES;
269
270 if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
271 return -EPERM;
272
273 if (arg)
274 set_bit(HCI_RAW, &hdev->flags);
275 else
276 clear_bit(HCI_RAW, &hdev->flags);
277
278 return 0;
279
280 case HCIGETCONNINFO:
281 return hci_get_conn_info(hdev, (void __user *) arg);
282
283 case HCIGETAUTHINFO:
284 return hci_get_auth_info(hdev, (void __user *) arg);
285
286 case HCIBLOCKADDR:
287 if (!capable(CAP_NET_ADMIN))
288 return -EACCES;
289 return hci_blacklist_add(hdev, (void __user *) arg);
290
291 case HCIUNBLOCKADDR:
292 if (!capable(CAP_NET_ADMIN))
293 return -EACCES;
294 return hci_blacklist_del(hdev, (void __user *) arg);
295
296 default:
297 if (hdev->ioctl)
298 return hdev->ioctl(hdev, cmd, arg);
299 return -EINVAL;
300 }
301}
302
303static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
304{
305 struct sock *sk = sock->sk;
306 void __user *argp = (void __user *) arg;
307 int err;
308
309 BT_DBG("cmd %x arg %lx", cmd, arg);
310
311 switch (cmd) {
312 case HCIGETDEVLIST:
313 return hci_get_dev_list(argp);
314
315 case HCIGETDEVINFO:
316 return hci_get_dev_info(argp);
317
318 case HCIGETCONNLIST:
319 return hci_get_conn_list(argp);
320
321 case HCIDEVUP:
322 if (!capable(CAP_NET_ADMIN))
323 return -EACCES;
324 return hci_dev_open(arg);
325
326 case HCIDEVDOWN:
327 if (!capable(CAP_NET_ADMIN))
328 return -EACCES;
329 return hci_dev_close(arg);
330
331 case HCIDEVRESET:
332 if (!capable(CAP_NET_ADMIN))
333 return -EACCES;
334 return hci_dev_reset(arg);
335
336 case HCIDEVRESTAT:
337 if (!capable(CAP_NET_ADMIN))
338 return -EACCES;
339 return hci_dev_reset_stat(arg);
340
341 case HCISETSCAN:
342 case HCISETAUTH:
343 case HCISETENCRYPT:
344 case HCISETPTYPE:
345 case HCISETLINKPOL:
346 case HCISETLINKMODE:
347 case HCISETACLMTU:
348 case HCISETSCOMTU:
349 if (!capable(CAP_NET_ADMIN))
350 return -EACCES;
351 return hci_dev_cmd(cmd, argp);
352
353 case HCIINQUIRY:
354 return hci_inquiry(argp);
355
356 default:
357 lock_sock(sk);
358 err = hci_sock_bound_ioctl(sk, cmd, arg);
359 release_sock(sk);
360 return err;
361 }
362}
363
364static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
365{
366 struct sockaddr_hci haddr;
367 struct sock *sk = sock->sk;
368 struct hci_dev *hdev = NULL;
369 int len, err = 0;
370
371 BT_DBG("sock %p sk %p", sock, sk);
372
373 if (!addr)
374 return -EINVAL;
375
376 memset(&haddr, 0, sizeof(haddr));
377 len = min_t(unsigned int, sizeof(haddr), addr_len);
378 memcpy(&haddr, addr, len);
379
380 if (haddr.hci_family != AF_BLUETOOTH)
381 return -EINVAL;
382
383 if (haddr.hci_channel > HCI_CHANNEL_CONTROL)
384 return -EINVAL;
385
386 if (haddr.hci_channel == HCI_CHANNEL_CONTROL && !enable_mgmt)
387 return -EINVAL;
388
389 lock_sock(sk);
390
391 if (sk->sk_state == BT_BOUND || hci_pi(sk)->hdev) {
392 err = -EALREADY;
393 goto done;
394 }
395
396 if (haddr.hci_dev != HCI_DEV_NONE) {
397 hdev = hci_dev_get(haddr.hci_dev);
398 if (!hdev) {
399 err = -ENODEV;
400 goto done;
401 }
402
403 atomic_inc(&hdev->promisc);
404 }
405
406 hci_pi(sk)->channel = haddr.hci_channel;
407 hci_pi(sk)->hdev = hdev;
408 sk->sk_state = BT_BOUND;
409
410done:
411 release_sock(sk);
412 return err;
413}
414
415static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, int *addr_len, int peer)
416{
417 struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr;
418 struct sock *sk = sock->sk;
419 struct hci_dev *hdev = hci_pi(sk)->hdev;
420
421 BT_DBG("sock %p sk %p", sock, sk);
422
423 if (!hdev)
424 return -EBADFD;
425
426 lock_sock(sk);
427
428 *addr_len = sizeof(*haddr);
429 haddr->hci_family = AF_BLUETOOTH;
430 haddr->hci_dev = hdev->id;
431
432 release_sock(sk);
433 return 0;
434}
435
436static inline void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
437{
438 __u32 mask = hci_pi(sk)->cmsg_mask;
439
440 if (mask & HCI_CMSG_DIR) {
441 int incoming = bt_cb(skb)->incoming;
442 put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), &incoming);
443 }
444
445 if (mask & HCI_CMSG_TSTAMP) {
446#ifdef CONFIG_COMPAT
447 struct compat_timeval ctv;
448#endif
449 struct timeval tv;
450 void *data;
451 int len;
452
453 skb_get_timestamp(skb, &tv);
454
455 data = &tv;
456 len = sizeof(tv);
457#ifdef CONFIG_COMPAT
458 if (msg->msg_flags & MSG_CMSG_COMPAT) {
459 ctv.tv_sec = tv.tv_sec;
460 ctv.tv_usec = tv.tv_usec;
461 data = &ctv;
462 len = sizeof(ctv);
463 }
464#endif
465
466 put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data);
467 }
468}
469
470static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
471 struct msghdr *msg, size_t len, int flags)
472{
473 int noblock = flags & MSG_DONTWAIT;
474 struct sock *sk = sock->sk;
475 struct sk_buff *skb;
476 int copied, err;
477
478 BT_DBG("sock %p, sk %p", sock, sk);
479
480 if (flags & (MSG_OOB))
481 return -EOPNOTSUPP;
482
483 if (sk->sk_state == BT_CLOSED)
484 return 0;
485
486 skb = skb_recv_datagram(sk, flags, noblock, &err);
487 if (!skb)
488 return err;
489
490 msg->msg_namelen = 0;
491
492 copied = skb->len;
493 if (len < copied) {
494 msg->msg_flags |= MSG_TRUNC;
495 copied = len;
496 }
497
498 skb_reset_transport_header(skb);
499 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
500
501 hci_sock_cmsg(sk, msg, skb);
502
503 skb_free_datagram(sk, skb);
504
505 return err ? : copied;
506}
507
508static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
509 struct msghdr *msg, size_t len)
510{
511 struct sock *sk = sock->sk;
512 struct hci_dev *hdev;
513 struct sk_buff *skb;
514 int err;
515
516 BT_DBG("sock %p sk %p", sock, sk);
517
518 if (msg->msg_flags & MSG_OOB)
519 return -EOPNOTSUPP;
520
521 if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE))
522 return -EINVAL;
523
524 if (len < 4 || len > HCI_MAX_FRAME_SIZE)
525 return -EINVAL;
526
527 lock_sock(sk);
528
529 switch (hci_pi(sk)->channel) {
530 case HCI_CHANNEL_RAW:
531 break;
532 case HCI_CHANNEL_CONTROL:
533 err = mgmt_control(sk, msg, len);
534 goto done;
535 default:
536 err = -EINVAL;
537 goto done;
538 }
539
540 hdev = hci_pi(sk)->hdev;
541 if (!hdev) {
542 err = -EBADFD;
543 goto done;
544 }
545
546 if (!test_bit(HCI_UP, &hdev->flags)) {
547 err = -ENETDOWN;
548 goto done;
549 }
550
551 skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
552 if (!skb)
553 goto done;
554
555 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
556 err = -EFAULT;
557 goto drop;
558 }
559
560 bt_cb(skb)->pkt_type = *((unsigned char *) skb->data);
561 skb_pull(skb, 1);
562 skb->dev = (void *) hdev;
563
564 if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) {
565 u16 opcode = get_unaligned_le16(skb->data);
566 u16 ogf = hci_opcode_ogf(opcode);
567 u16 ocf = hci_opcode_ocf(opcode);
568
569 if (((ogf > HCI_SFLT_MAX_OGF) ||
570 !hci_test_bit(ocf & HCI_FLT_OCF_BITS, &hci_sec_filter.ocf_mask[ogf])) &&
571 !capable(CAP_NET_RAW)) {
572 err = -EPERM;
573 goto drop;
574 }
575
576 if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) {
577 skb_queue_tail(&hdev->raw_q, skb);
578 tasklet_schedule(&hdev->tx_task);
579 } else {
580 skb_queue_tail(&hdev->cmd_q, skb);
581 tasklet_schedule(&hdev->cmd_task);
582 }
583 } else {
584 if (!capable(CAP_NET_RAW)) {
585 err = -EPERM;
586 goto drop;
587 }
588
589 skb_queue_tail(&hdev->raw_q, skb);
590 tasklet_schedule(&hdev->tx_task);
591 }
592
593 err = len;
594
595done:
596 release_sock(sk);
597 return err;
598
599drop:
600 kfree_skb(skb);
601 goto done;
602}
603
604static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int len)
605{
606 struct hci_ufilter uf = { .opcode = 0 };
607 struct sock *sk = sock->sk;
608 int err = 0, opt = 0;
609
610 BT_DBG("sk %p, opt %d", sk, optname);
611
612 lock_sock(sk);
613
614 switch (optname) {
615 case HCI_DATA_DIR:
616 if (get_user(opt, (int __user *)optval)) {
617 err = -EFAULT;
618 break;
619 }
620
621 if (opt)
622 hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR;
623 else
624 hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR;
625 break;
626
627 case HCI_TIME_STAMP:
628 if (get_user(opt, (int __user *)optval)) {
629 err = -EFAULT;
630 break;
631 }
632
633 if (opt)
634 hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP;
635 else
636 hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP;
637 break;
638
639 case HCI_FILTER:
640 {
641 struct hci_filter *f = &hci_pi(sk)->filter;
642
643 uf.type_mask = f->type_mask;
644 uf.opcode = f->opcode;
645 uf.event_mask[0] = *((u32 *) f->event_mask + 0);
646 uf.event_mask[1] = *((u32 *) f->event_mask + 1);
647 }
648
649 len = min_t(unsigned int, len, sizeof(uf));
650 if (copy_from_user(&uf, optval, len)) {
651 err = -EFAULT;
652 break;
653 }
654
655 if (!capable(CAP_NET_RAW)) {
656 uf.type_mask &= hci_sec_filter.type_mask;
657 uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0);
658 uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1);
659 }
660
661 {
662 struct hci_filter *f = &hci_pi(sk)->filter;
663
664 f->type_mask = uf.type_mask;
665 f->opcode = uf.opcode;
666 *((u32 *) f->event_mask + 0) = uf.event_mask[0];
667 *((u32 *) f->event_mask + 1) = uf.event_mask[1];
668 }
669 break;
670
671 default:
672 err = -ENOPROTOOPT;
673 break;
674 }
675
676 release_sock(sk);
677 return err;
678}
679
680static int hci_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
681{
682 struct hci_ufilter uf;
683 struct sock *sk = sock->sk;
684 int len, opt;
685
686 if (get_user(len, optlen))
687 return -EFAULT;
688
689 switch (optname) {
690 case HCI_DATA_DIR:
691 if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR)
692 opt = 1;
693 else
694 opt = 0;
695
696 if (put_user(opt, optval))
697 return -EFAULT;
698 break;
699
700 case HCI_TIME_STAMP:
701 if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP)
702 opt = 1;
703 else
704 opt = 0;
705
706 if (put_user(opt, optval))
707 return -EFAULT;
708 break;
709
710 case HCI_FILTER:
711 {
712 struct hci_filter *f = &hci_pi(sk)->filter;
713
714 uf.type_mask = f->type_mask;
715 uf.opcode = f->opcode;
716 uf.event_mask[0] = *((u32 *) f->event_mask + 0);
717 uf.event_mask[1] = *((u32 *) f->event_mask + 1);
718 }
719
720 len = min_t(unsigned int, len, sizeof(uf));
721 if (copy_to_user(optval, &uf, len))
722 return -EFAULT;
723 break;
724
725 default:
726 return -ENOPROTOOPT;
727 break;
728 }
729
730 return 0;
731}
732
733static const struct proto_ops hci_sock_ops = {
734 .family = PF_BLUETOOTH,
735 .owner = THIS_MODULE,
736 .release = hci_sock_release,
737 .bind = hci_sock_bind,
738 .getname = hci_sock_getname,
739 .sendmsg = hci_sock_sendmsg,
740 .recvmsg = hci_sock_recvmsg,
741 .ioctl = hci_sock_ioctl,
742 .poll = datagram_poll,
743 .listen = sock_no_listen,
744 .shutdown = sock_no_shutdown,
745 .setsockopt = hci_sock_setsockopt,
746 .getsockopt = hci_sock_getsockopt,
747 .connect = sock_no_connect,
748 .socketpair = sock_no_socketpair,
749 .accept = sock_no_accept,
750 .mmap = sock_no_mmap
751};
752
753static struct proto hci_sk_proto = {
754 .name = "HCI",
755 .owner = THIS_MODULE,
756 .obj_size = sizeof(struct hci_pinfo)
757};
758
759static int hci_sock_create(struct net *net, struct socket *sock, int protocol,
760 int kern)
761{
762 struct sock *sk;
763
764 BT_DBG("sock %p", sock);
765
766 if (sock->type != SOCK_RAW)
767 return -ESOCKTNOSUPPORT;
768
769 sock->ops = &hci_sock_ops;
770
771 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto);
772 if (!sk)
773 return -ENOMEM;
774
775 sock_init_data(sock, sk);
776
777 sock_reset_flag(sk, SOCK_ZAPPED);
778
779 sk->sk_protocol = protocol;
780
781 sock->state = SS_UNCONNECTED;
782 sk->sk_state = BT_OPEN;
783
784 bt_sock_link(&hci_sk_list, sk);
785 return 0;
786}
787
788static int hci_sock_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
789{
790 struct hci_dev *hdev = (struct hci_dev *) ptr;
791 struct hci_ev_si_device ev;
792
793 BT_DBG("hdev %s event %ld", hdev->name, event);
794
795
796 ev.event = event;
797 ev.dev_id = hdev->id;
798 hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev);
799
800 if (event == HCI_DEV_UNREG) {
801 struct sock *sk;
802 struct hlist_node *node;
803
804
805 read_lock(&hci_sk_list.lock);
806 sk_for_each(sk, node, &hci_sk_list.head) {
807 local_bh_disable();
808 bh_lock_sock_nested(sk);
809 if (hci_pi(sk)->hdev == hdev) {
810 hci_pi(sk)->hdev = NULL;
811 sk->sk_err = EPIPE;
812 sk->sk_state = BT_OPEN;
813 sk->sk_state_change(sk);
814
815 hci_dev_put(hdev);
816 }
817 bh_unlock_sock(sk);
818 local_bh_enable();
819 }
820 read_unlock(&hci_sk_list.lock);
821 }
822
823 return NOTIFY_DONE;
824}
825
826static const struct net_proto_family hci_sock_family_ops = {
827 .family = PF_BLUETOOTH,
828 .owner = THIS_MODULE,
829 .create = hci_sock_create,
830};
831
832static struct notifier_block hci_sock_nblock = {
833 .notifier_call = hci_sock_dev_event
834};
835
836int __init hci_sock_init(void)
837{
838 int err;
839
840 err = proto_register(&hci_sk_proto, 0);
841 if (err < 0)
842 return err;
843
844 err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops);
845 if (err < 0)
846 goto error;
847
848 hci_register_notifier(&hci_sock_nblock);
849
850 BT_INFO("HCI socket layer initialized");
851
852 return 0;
853
854error:
855 BT_ERR("HCI socket registration failed");
856 proto_unregister(&hci_sk_proto);
857 return err;
858}
859
860void __exit hci_sock_cleanup(void)
861{
862 if (bt_sock_unregister(BTPROTO_HCI) < 0)
863 BT_ERR("HCI socket unregistration failed");
864
865 hci_unregister_notifier(&hci_sock_nblock);
866
867 proto_unregister(&hci_sk_proto);
868}
869
870module_param(enable_mgmt, bool, 0644);
871MODULE_PARM_DESC(enable_mgmt, "Enable Management interface");
872
