2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
25 /* Bluetooth HCI sockets. */
27 #include <linux/export.h>
28 #include <asm/unaligned.h>
30 #include <net/bluetooth/bluetooth.h>
31 #include <net/bluetooth/hci_core.h>
32 #include <net/bluetooth/hci_mon.h>
34 static atomic_t monitor_promisc
= ATOMIC_INIT(0);
36 /* ----- HCI socket interface ----- */
38 static inline int hci_test_bit(int nr
, void *addr
)
40 return *((__u32
*) addr
+ (nr
>> 5)) & ((__u32
) 1 << (nr
& 31));
44 static struct hci_sec_filter hci_sec_filter
= {
48 { 0x1000d9fe, 0x0000b00c },
53 { 0xbe000006, 0x00000001, 0x00000000, 0x00 },
55 { 0x00005200, 0x00000000, 0x00000000, 0x00 },
57 { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 },
59 { 0x000002be, 0x00000000, 0x00000000, 0x00 },
60 /* OGF_STATUS_PARAM */
61 { 0x000000ea, 0x00000000, 0x00000000, 0x00 }
65 static struct bt_sock_list hci_sk_list
= {
66 .lock
= __RW_LOCK_UNLOCKED(hci_sk_list
.lock
)
69 static bool is_filtered_packet(struct sock
*sk
, struct sk_buff
*skb
)
71 struct hci_filter
*flt
;
72 int flt_type
, flt_event
;
75 flt
= &hci_pi(sk
)->filter
;
77 if (bt_cb(skb
)->pkt_type
== HCI_VENDOR_PKT
)
80 flt_type
= bt_cb(skb
)->pkt_type
& HCI_FLT_TYPE_BITS
;
82 if (!test_bit(flt_type
, &flt
->type_mask
))
85 /* Extra filter for event packets only */
86 if (bt_cb(skb
)->pkt_type
!= HCI_EVENT_PKT
)
89 flt_event
= (*(__u8
*)skb
->data
& HCI_FLT_EVENT_BITS
);
91 if (!hci_test_bit(flt_event
, &flt
->event_mask
))
94 /* Check filter only when opcode is set */
98 if (flt_event
== HCI_EV_CMD_COMPLETE
&&
99 flt
->opcode
!= get_unaligned((__le16
*)(skb
->data
+ 3)))
102 if (flt_event
== HCI_EV_CMD_STATUS
&&
103 flt
->opcode
!= get_unaligned((__le16
*)(skb
->data
+ 4)))
109 /* Send frame to RAW socket */
110 void hci_send_to_sock(struct hci_dev
*hdev
, struct sk_buff
*skb
)
113 struct sk_buff
*skb_copy
= NULL
;
115 BT_DBG("hdev %p len %d", hdev
, skb
->len
);
117 read_lock(&hci_sk_list
.lock
);
119 sk_for_each(sk
, &hci_sk_list
.head
) {
120 struct sk_buff
*nskb
;
122 if (sk
->sk_state
!= BT_BOUND
|| hci_pi(sk
)->hdev
!= hdev
)
125 /* Don't send frame to the socket it came from */
129 if (hci_pi(sk
)->channel
== HCI_CHANNEL_RAW
) {
130 if (is_filtered_packet(sk
, skb
))
132 } else if (hci_pi(sk
)->channel
== HCI_CHANNEL_USER
) {
133 if (!bt_cb(skb
)->incoming
)
135 if (bt_cb(skb
)->pkt_type
!= HCI_EVENT_PKT
&&
136 bt_cb(skb
)->pkt_type
!= HCI_ACLDATA_PKT
&&
137 bt_cb(skb
)->pkt_type
!= HCI_SCODATA_PKT
)
140 /* Don't send frame to other channel types */
145 /* Create a private copy with headroom */
146 skb_copy
= __pskb_copy_fclone(skb
, 1, GFP_ATOMIC
, true);
150 /* Put type byte before the data */
151 memcpy(skb_push(skb_copy
, 1), &bt_cb(skb
)->pkt_type
, 1);
154 nskb
= skb_clone(skb_copy
, GFP_ATOMIC
);
158 if (sock_queue_rcv_skb(sk
, nskb
))
162 read_unlock(&hci_sk_list
.lock
);
167 /* Send frame to control socket */
168 void hci_send_to_control(struct sk_buff
*skb
, struct sock
*skip_sk
)
172 BT_DBG("len %d", skb
->len
);
174 read_lock(&hci_sk_list
.lock
);
176 sk_for_each(sk
, &hci_sk_list
.head
) {
177 struct sk_buff
*nskb
;
179 /* Skip the original socket */
183 if (sk
->sk_state
!= BT_BOUND
)
186 if (hci_pi(sk
)->channel
!= HCI_CHANNEL_CONTROL
)
189 nskb
= skb_clone(skb
, GFP_ATOMIC
);
193 if (sock_queue_rcv_skb(sk
, nskb
))
197 read_unlock(&hci_sk_list
.lock
);
200 /* Send frame to monitor socket */
201 void hci_send_to_monitor(struct hci_dev
*hdev
, struct sk_buff
*skb
)
204 struct sk_buff
*skb_copy
= NULL
;
207 if (!atomic_read(&monitor_promisc
))
210 BT_DBG("hdev %p len %d", hdev
, skb
->len
);
212 switch (bt_cb(skb
)->pkt_type
) {
213 case HCI_COMMAND_PKT
:
214 opcode
= cpu_to_le16(HCI_MON_COMMAND_PKT
);
217 opcode
= cpu_to_le16(HCI_MON_EVENT_PKT
);
219 case HCI_ACLDATA_PKT
:
220 if (bt_cb(skb
)->incoming
)
221 opcode
= cpu_to_le16(HCI_MON_ACL_RX_PKT
);
223 opcode
= cpu_to_le16(HCI_MON_ACL_TX_PKT
);
225 case HCI_SCODATA_PKT
:
226 if (bt_cb(skb
)->incoming
)
227 opcode
= cpu_to_le16(HCI_MON_SCO_RX_PKT
);
229 opcode
= cpu_to_le16(HCI_MON_SCO_TX_PKT
);
235 read_lock(&hci_sk_list
.lock
);
237 sk_for_each(sk
, &hci_sk_list
.head
) {
238 struct sk_buff
*nskb
;
240 if (sk
->sk_state
!= BT_BOUND
)
243 if (hci_pi(sk
)->channel
!= HCI_CHANNEL_MONITOR
)
247 struct hci_mon_hdr
*hdr
;
249 /* Create a private copy with headroom */
250 skb_copy
= __pskb_copy_fclone(skb
, HCI_MON_HDR_SIZE
,
255 /* Put header before the data */
256 hdr
= (void *) skb_push(skb_copy
, HCI_MON_HDR_SIZE
);
257 hdr
->opcode
= opcode
;
258 hdr
->index
= cpu_to_le16(hdev
->id
);
259 hdr
->len
= cpu_to_le16(skb
->len
);
262 nskb
= skb_clone(skb_copy
, GFP_ATOMIC
);
266 if (sock_queue_rcv_skb(sk
, nskb
))
270 read_unlock(&hci_sk_list
.lock
);
275 static void send_monitor_event(struct sk_buff
*skb
)
279 BT_DBG("len %d", skb
->len
);
281 read_lock(&hci_sk_list
.lock
);
283 sk_for_each(sk
, &hci_sk_list
.head
) {
284 struct sk_buff
*nskb
;
286 if (sk
->sk_state
!= BT_BOUND
)
289 if (hci_pi(sk
)->channel
!= HCI_CHANNEL_MONITOR
)
292 nskb
= skb_clone(skb
, GFP_ATOMIC
);
296 if (sock_queue_rcv_skb(sk
, nskb
))
300 read_unlock(&hci_sk_list
.lock
);
303 static struct sk_buff
*create_monitor_event(struct hci_dev
*hdev
, int event
)
305 struct hci_mon_hdr
*hdr
;
306 struct hci_mon_new_index
*ni
;
312 skb
= bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE
, GFP_ATOMIC
);
316 ni
= (void *) skb_put(skb
, HCI_MON_NEW_INDEX_SIZE
);
317 ni
->type
= hdev
->dev_type
;
319 bacpy(&ni
->bdaddr
, &hdev
->bdaddr
);
320 memcpy(ni
->name
, hdev
->name
, 8);
322 opcode
= cpu_to_le16(HCI_MON_NEW_INDEX
);
326 skb
= bt_skb_alloc(0, GFP_ATOMIC
);
330 opcode
= cpu_to_le16(HCI_MON_DEL_INDEX
);
337 __net_timestamp(skb
);
339 hdr
= (void *) skb_push(skb
, HCI_MON_HDR_SIZE
);
340 hdr
->opcode
= opcode
;
341 hdr
->index
= cpu_to_le16(hdev
->id
);
342 hdr
->len
= cpu_to_le16(skb
->len
- HCI_MON_HDR_SIZE
);
347 static void send_monitor_replay(struct sock
*sk
)
349 struct hci_dev
*hdev
;
351 read_lock(&hci_dev_list_lock
);
353 list_for_each_entry(hdev
, &hci_dev_list
, list
) {
356 skb
= create_monitor_event(hdev
, HCI_DEV_REG
);
360 if (sock_queue_rcv_skb(sk
, skb
))
364 read_unlock(&hci_dev_list_lock
);
367 /* Generate internal stack event */
368 static void hci_si_event(struct hci_dev
*hdev
, int type
, int dlen
, void *data
)
370 struct hci_event_hdr
*hdr
;
371 struct hci_ev_stack_internal
*ev
;
374 skb
= bt_skb_alloc(HCI_EVENT_HDR_SIZE
+ sizeof(*ev
) + dlen
, GFP_ATOMIC
);
378 hdr
= (void *) skb_put(skb
, HCI_EVENT_HDR_SIZE
);
379 hdr
->evt
= HCI_EV_STACK_INTERNAL
;
380 hdr
->plen
= sizeof(*ev
) + dlen
;
382 ev
= (void *) skb_put(skb
, sizeof(*ev
) + dlen
);
384 memcpy(ev
->data
, data
, dlen
);
386 bt_cb(skb
)->incoming
= 1;
387 __net_timestamp(skb
);
389 bt_cb(skb
)->pkt_type
= HCI_EVENT_PKT
;
390 hci_send_to_sock(hdev
, skb
);
394 void hci_sock_dev_event(struct hci_dev
*hdev
, int event
)
396 struct hci_ev_si_device ev
;
398 BT_DBG("hdev %s event %d", hdev
->name
, event
);
400 /* Send event to monitor */
401 if (atomic_read(&monitor_promisc
)) {
404 skb
= create_monitor_event(hdev
, event
);
406 send_monitor_event(skb
);
411 /* Send event to sockets */
413 ev
.dev_id
= hdev
->id
;
414 hci_si_event(NULL
, HCI_EV_SI_DEVICE
, sizeof(ev
), &ev
);
416 if (event
== HCI_DEV_UNREG
) {
419 /* Detach sockets from device */
420 read_lock(&hci_sk_list
.lock
);
421 sk_for_each(sk
, &hci_sk_list
.head
) {
422 bh_lock_sock_nested(sk
);
423 if (hci_pi(sk
)->hdev
== hdev
) {
424 hci_pi(sk
)->hdev
= NULL
;
426 sk
->sk_state
= BT_OPEN
;
427 sk
->sk_state_change(sk
);
433 read_unlock(&hci_sk_list
.lock
);
437 static int hci_sock_release(struct socket
*sock
)
439 struct sock
*sk
= sock
->sk
;
440 struct hci_dev
*hdev
;
442 BT_DBG("sock %p sk %p", sock
, sk
);
447 hdev
= hci_pi(sk
)->hdev
;
449 if (hci_pi(sk
)->channel
== HCI_CHANNEL_MONITOR
)
450 atomic_dec(&monitor_promisc
);
452 bt_sock_unlink(&hci_sk_list
, sk
);
455 if (hci_pi(sk
)->channel
== HCI_CHANNEL_USER
) {
456 mgmt_index_added(hdev
);
457 clear_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
);
458 hci_dev_close(hdev
->id
);
461 atomic_dec(&hdev
->promisc
);
467 skb_queue_purge(&sk
->sk_receive_queue
);
468 skb_queue_purge(&sk
->sk_write_queue
);
474 static int hci_sock_blacklist_add(struct hci_dev
*hdev
, void __user
*arg
)
479 if (copy_from_user(&bdaddr
, arg
, sizeof(bdaddr
)))
484 err
= hci_blacklist_add(hdev
, &bdaddr
, BDADDR_BREDR
);
486 hci_dev_unlock(hdev
);
491 static int hci_sock_blacklist_del(struct hci_dev
*hdev
, void __user
*arg
)
496 if (copy_from_user(&bdaddr
, arg
, sizeof(bdaddr
)))
501 err
= hci_blacklist_del(hdev
, &bdaddr
, BDADDR_BREDR
);
503 hci_dev_unlock(hdev
);
508 /* Ioctls that require bound socket */
509 static int hci_sock_bound_ioctl(struct sock
*sk
, unsigned int cmd
,
512 struct hci_dev
*hdev
= hci_pi(sk
)->hdev
;
517 if (test_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
))
520 if (hdev
->dev_type
!= HCI_BREDR
)
525 if (!capable(CAP_NET_ADMIN
))
530 return hci_get_conn_info(hdev
, (void __user
*) arg
);
533 return hci_get_auth_info(hdev
, (void __user
*) arg
);
536 if (!capable(CAP_NET_ADMIN
))
538 return hci_sock_blacklist_add(hdev
, (void __user
*) arg
);
541 if (!capable(CAP_NET_ADMIN
))
543 return hci_sock_blacklist_del(hdev
, (void __user
*) arg
);
549 static int hci_sock_ioctl(struct socket
*sock
, unsigned int cmd
,
552 void __user
*argp
= (void __user
*) arg
;
553 struct sock
*sk
= sock
->sk
;
556 BT_DBG("cmd %x arg %lx", cmd
, arg
);
560 if (hci_pi(sk
)->channel
!= HCI_CHANNEL_RAW
) {
569 return hci_get_dev_list(argp
);
572 return hci_get_dev_info(argp
);
575 return hci_get_conn_list(argp
);
578 if (!capable(CAP_NET_ADMIN
))
580 return hci_dev_open(arg
);
583 if (!capable(CAP_NET_ADMIN
))
585 return hci_dev_close(arg
);
588 if (!capable(CAP_NET_ADMIN
))
590 return hci_dev_reset(arg
);
593 if (!capable(CAP_NET_ADMIN
))
595 return hci_dev_reset_stat(arg
);
605 if (!capable(CAP_NET_ADMIN
))
607 return hci_dev_cmd(cmd
, argp
);
610 return hci_inquiry(argp
);
615 err
= hci_sock_bound_ioctl(sk
, cmd
, arg
);
622 static int hci_sock_bind(struct socket
*sock
, struct sockaddr
*addr
,
625 struct sockaddr_hci haddr
;
626 struct sock
*sk
= sock
->sk
;
627 struct hci_dev
*hdev
= NULL
;
630 BT_DBG("sock %p sk %p", sock
, sk
);
635 memset(&haddr
, 0, sizeof(haddr
));
636 len
= min_t(unsigned int, sizeof(haddr
), addr_len
);
637 memcpy(&haddr
, addr
, len
);
639 if (haddr
.hci_family
!= AF_BLUETOOTH
)
644 if (sk
->sk_state
== BT_BOUND
) {
649 switch (haddr
.hci_channel
) {
650 case HCI_CHANNEL_RAW
:
651 if (hci_pi(sk
)->hdev
) {
656 if (haddr
.hci_dev
!= HCI_DEV_NONE
) {
657 hdev
= hci_dev_get(haddr
.hci_dev
);
663 atomic_inc(&hdev
->promisc
);
666 hci_pi(sk
)->hdev
= hdev
;
669 case HCI_CHANNEL_USER
:
670 if (hci_pi(sk
)->hdev
) {
675 if (haddr
.hci_dev
== HCI_DEV_NONE
) {
680 if (!capable(CAP_NET_ADMIN
)) {
685 hdev
= hci_dev_get(haddr
.hci_dev
);
691 if (test_bit(HCI_UP
, &hdev
->flags
) ||
692 test_bit(HCI_INIT
, &hdev
->flags
) ||
693 test_bit(HCI_SETUP
, &hdev
->dev_flags
)) {
699 if (test_and_set_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
)) {
705 mgmt_index_removed(hdev
);
707 err
= hci_dev_open(hdev
->id
);
709 clear_bit(HCI_USER_CHANNEL
, &hdev
->dev_flags
);
710 mgmt_index_added(hdev
);
715 atomic_inc(&hdev
->promisc
);
717 hci_pi(sk
)->hdev
= hdev
;
720 case HCI_CHANNEL_CONTROL
:
721 if (haddr
.hci_dev
!= HCI_DEV_NONE
) {
726 if (!capable(CAP_NET_ADMIN
)) {
733 case HCI_CHANNEL_MONITOR
:
734 if (haddr
.hci_dev
!= HCI_DEV_NONE
) {
739 if (!capable(CAP_NET_RAW
)) {
744 send_monitor_replay(sk
);
746 atomic_inc(&monitor_promisc
);
755 hci_pi(sk
)->channel
= haddr
.hci_channel
;
756 sk
->sk_state
= BT_BOUND
;
763 static int hci_sock_getname(struct socket
*sock
, struct sockaddr
*addr
,
764 int *addr_len
, int peer
)
766 struct sockaddr_hci
*haddr
= (struct sockaddr_hci
*) addr
;
767 struct sock
*sk
= sock
->sk
;
768 struct hci_dev
*hdev
;
771 BT_DBG("sock %p sk %p", sock
, sk
);
778 hdev
= hci_pi(sk
)->hdev
;
784 *addr_len
= sizeof(*haddr
);
785 haddr
->hci_family
= AF_BLUETOOTH
;
786 haddr
->hci_dev
= hdev
->id
;
787 haddr
->hci_channel
= hci_pi(sk
)->channel
;
794 static void hci_sock_cmsg(struct sock
*sk
, struct msghdr
*msg
,
797 __u32 mask
= hci_pi(sk
)->cmsg_mask
;
799 if (mask
& HCI_CMSG_DIR
) {
800 int incoming
= bt_cb(skb
)->incoming
;
801 put_cmsg(msg
, SOL_HCI
, HCI_CMSG_DIR
, sizeof(incoming
),
805 if (mask
& HCI_CMSG_TSTAMP
) {
807 struct compat_timeval ctv
;
813 skb_get_timestamp(skb
, &tv
);
818 if (!COMPAT_USE_64BIT_TIME
&&
819 (msg
->msg_flags
& MSG_CMSG_COMPAT
)) {
820 ctv
.tv_sec
= tv
.tv_sec
;
821 ctv
.tv_usec
= tv
.tv_usec
;
827 put_cmsg(msg
, SOL_HCI
, HCI_CMSG_TSTAMP
, len
, data
);
831 static int hci_sock_recvmsg(struct kiocb
*iocb
, struct socket
*sock
,
832 struct msghdr
*msg
, size_t len
, int flags
)
834 int noblock
= flags
& MSG_DONTWAIT
;
835 struct sock
*sk
= sock
->sk
;
839 BT_DBG("sock %p, sk %p", sock
, sk
);
841 if (flags
& (MSG_OOB
))
844 if (sk
->sk_state
== BT_CLOSED
)
847 skb
= skb_recv_datagram(sk
, flags
, noblock
, &err
);
853 msg
->msg_flags
|= MSG_TRUNC
;
857 skb_reset_transport_header(skb
);
858 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
860 switch (hci_pi(sk
)->channel
) {
861 case HCI_CHANNEL_RAW
:
862 hci_sock_cmsg(sk
, msg
, skb
);
864 case HCI_CHANNEL_USER
:
865 case HCI_CHANNEL_CONTROL
:
866 case HCI_CHANNEL_MONITOR
:
867 sock_recv_timestamp(msg
, sk
, skb
);
871 skb_free_datagram(sk
, skb
);
873 return err
? : copied
;
876 static int hci_sock_sendmsg(struct kiocb
*iocb
, struct socket
*sock
,
877 struct msghdr
*msg
, size_t len
)
879 struct sock
*sk
= sock
->sk
;
880 struct hci_dev
*hdev
;
884 BT_DBG("sock %p sk %p", sock
, sk
);
886 if (msg
->msg_flags
& MSG_OOB
)
889 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_NOSIGNAL
|MSG_ERRQUEUE
))
892 if (len
< 4 || len
> HCI_MAX_FRAME_SIZE
)
897 switch (hci_pi(sk
)->channel
) {
898 case HCI_CHANNEL_RAW
:
899 case HCI_CHANNEL_USER
:
901 case HCI_CHANNEL_CONTROL
:
902 err
= mgmt_control(sk
, msg
, len
);
904 case HCI_CHANNEL_MONITOR
:
912 hdev
= hci_pi(sk
)->hdev
;
918 if (!test_bit(HCI_UP
, &hdev
->flags
)) {
923 skb
= bt_skb_send_alloc(sk
, len
, msg
->msg_flags
& MSG_DONTWAIT
, &err
);
927 if (memcpy_fromiovec(skb_put(skb
, len
), msg
->msg_iov
, len
)) {
932 bt_cb(skb
)->pkt_type
= *((unsigned char *) skb
->data
);
935 if (hci_pi(sk
)->channel
== HCI_CHANNEL_USER
) {
936 /* No permission check is needed for user channel
937 * since that gets enforced when binding the socket.
939 * However check that the packet type is valid.
941 if (bt_cb(skb
)->pkt_type
!= HCI_COMMAND_PKT
&&
942 bt_cb(skb
)->pkt_type
!= HCI_ACLDATA_PKT
&&
943 bt_cb(skb
)->pkt_type
!= HCI_SCODATA_PKT
) {
948 skb_queue_tail(&hdev
->raw_q
, skb
);
949 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
950 } else if (bt_cb(skb
)->pkt_type
== HCI_COMMAND_PKT
) {
951 u16 opcode
= get_unaligned_le16(skb
->data
);
952 u16 ogf
= hci_opcode_ogf(opcode
);
953 u16 ocf
= hci_opcode_ocf(opcode
);
955 if (((ogf
> HCI_SFLT_MAX_OGF
) ||
956 !hci_test_bit(ocf
& HCI_FLT_OCF_BITS
,
957 &hci_sec_filter
.ocf_mask
[ogf
])) &&
958 !capable(CAP_NET_RAW
)) {
963 if (test_bit(HCI_RAW
, &hdev
->flags
) || (ogf
== 0x3f)) {
964 skb_queue_tail(&hdev
->raw_q
, skb
);
965 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
967 /* Stand-alone HCI commands must be flaged as
968 * single-command requests.
970 bt_cb(skb
)->req
.start
= true;
972 skb_queue_tail(&hdev
->cmd_q
, skb
);
973 queue_work(hdev
->workqueue
, &hdev
->cmd_work
);
976 if (!capable(CAP_NET_RAW
)) {
981 skb_queue_tail(&hdev
->raw_q
, skb
);
982 queue_work(hdev
->workqueue
, &hdev
->tx_work
);
996 static int hci_sock_setsockopt(struct socket
*sock
, int level
, int optname
,
997 char __user
*optval
, unsigned int len
)
999 struct hci_ufilter uf
= { .opcode
= 0 };
1000 struct sock
*sk
= sock
->sk
;
1001 int err
= 0, opt
= 0;
1003 BT_DBG("sk %p, opt %d", sk
, optname
);
1007 if (hci_pi(sk
)->channel
!= HCI_CHANNEL_RAW
) {
1014 if (get_user(opt
, (int __user
*)optval
)) {
1020 hci_pi(sk
)->cmsg_mask
|= HCI_CMSG_DIR
;
1022 hci_pi(sk
)->cmsg_mask
&= ~HCI_CMSG_DIR
;
1025 case HCI_TIME_STAMP
:
1026 if (get_user(opt
, (int __user
*)optval
)) {
1032 hci_pi(sk
)->cmsg_mask
|= HCI_CMSG_TSTAMP
;
1034 hci_pi(sk
)->cmsg_mask
&= ~HCI_CMSG_TSTAMP
;
1039 struct hci_filter
*f
= &hci_pi(sk
)->filter
;
1041 uf
.type_mask
= f
->type_mask
;
1042 uf
.opcode
= f
->opcode
;
1043 uf
.event_mask
[0] = *((u32
*) f
->event_mask
+ 0);
1044 uf
.event_mask
[1] = *((u32
*) f
->event_mask
+ 1);
1047 len
= min_t(unsigned int, len
, sizeof(uf
));
1048 if (copy_from_user(&uf
, optval
, len
)) {
1053 if (!capable(CAP_NET_RAW
)) {
1054 uf
.type_mask
&= hci_sec_filter
.type_mask
;
1055 uf
.event_mask
[0] &= *((u32
*) hci_sec_filter
.event_mask
+ 0);
1056 uf
.event_mask
[1] &= *((u32
*) hci_sec_filter
.event_mask
+ 1);
1060 struct hci_filter
*f
= &hci_pi(sk
)->filter
;
1062 f
->type_mask
= uf
.type_mask
;
1063 f
->opcode
= uf
.opcode
;
1064 *((u32
*) f
->event_mask
+ 0) = uf
.event_mask
[0];
1065 *((u32
*) f
->event_mask
+ 1) = uf
.event_mask
[1];
1079 static int hci_sock_getsockopt(struct socket
*sock
, int level
, int optname
,
1080 char __user
*optval
, int __user
*optlen
)
1082 struct hci_ufilter uf
;
1083 struct sock
*sk
= sock
->sk
;
1084 int len
, opt
, err
= 0;
1086 BT_DBG("sk %p, opt %d", sk
, optname
);
1088 if (get_user(len
, optlen
))
1093 if (hci_pi(sk
)->channel
!= HCI_CHANNEL_RAW
) {
1100 if (hci_pi(sk
)->cmsg_mask
& HCI_CMSG_DIR
)
1105 if (put_user(opt
, optval
))
1109 case HCI_TIME_STAMP
:
1110 if (hci_pi(sk
)->cmsg_mask
& HCI_CMSG_TSTAMP
)
1115 if (put_user(opt
, optval
))
1121 struct hci_filter
*f
= &hci_pi(sk
)->filter
;
1123 memset(&uf
, 0, sizeof(uf
));
1124 uf
.type_mask
= f
->type_mask
;
1125 uf
.opcode
= f
->opcode
;
1126 uf
.event_mask
[0] = *((u32
*) f
->event_mask
+ 0);
1127 uf
.event_mask
[1] = *((u32
*) f
->event_mask
+ 1);
1130 len
= min_t(unsigned int, len
, sizeof(uf
));
1131 if (copy_to_user(optval
, &uf
, len
))
1145 static const struct proto_ops hci_sock_ops
= {
1146 .family
= PF_BLUETOOTH
,
1147 .owner
= THIS_MODULE
,
1148 .release
= hci_sock_release
,
1149 .bind
= hci_sock_bind
,
1150 .getname
= hci_sock_getname
,
1151 .sendmsg
= hci_sock_sendmsg
,
1152 .recvmsg
= hci_sock_recvmsg
,
1153 .ioctl
= hci_sock_ioctl
,
1154 .poll
= datagram_poll
,
1155 .listen
= sock_no_listen
,
1156 .shutdown
= sock_no_shutdown
,
1157 .setsockopt
= hci_sock_setsockopt
,
1158 .getsockopt
= hci_sock_getsockopt
,
1159 .connect
= sock_no_connect
,
1160 .socketpair
= sock_no_socketpair
,
1161 .accept
= sock_no_accept
,
1162 .mmap
= sock_no_mmap
1165 static struct proto hci_sk_proto
= {
1167 .owner
= THIS_MODULE
,
1168 .obj_size
= sizeof(struct hci_pinfo
)
1171 static int hci_sock_create(struct net
*net
, struct socket
*sock
, int protocol
,
1176 BT_DBG("sock %p", sock
);
1178 if (sock
->type
!= SOCK_RAW
)
1179 return -ESOCKTNOSUPPORT
;
1181 sock
->ops
= &hci_sock_ops
;
1183 sk
= sk_alloc(net
, PF_BLUETOOTH
, GFP_ATOMIC
, &hci_sk_proto
);
1187 sock_init_data(sock
, sk
);
1189 sock_reset_flag(sk
, SOCK_ZAPPED
);
1191 sk
->sk_protocol
= protocol
;
1193 sock
->state
= SS_UNCONNECTED
;
1194 sk
->sk_state
= BT_OPEN
;
1196 bt_sock_link(&hci_sk_list
, sk
);
1200 static const struct net_proto_family hci_sock_family_ops
= {
1201 .family
= PF_BLUETOOTH
,
1202 .owner
= THIS_MODULE
,
1203 .create
= hci_sock_create
,
1206 int __init
hci_sock_init(void)
1210 err
= proto_register(&hci_sk_proto
, 0);
1214 err
= bt_sock_register(BTPROTO_HCI
, &hci_sock_family_ops
);
1216 BT_ERR("HCI socket registration failed");
1220 err
= bt_procfs_init(&init_net
, "hci", &hci_sk_list
, NULL
);
1222 BT_ERR("Failed to create HCI proc file");
1223 bt_sock_unregister(BTPROTO_HCI
);
1227 BT_INFO("HCI socket layer initialized");
1232 proto_unregister(&hci_sk_proto
);
1236 void hci_sock_cleanup(void)
1238 bt_procfs_cleanup(&init_net
, "hci");
1239 bt_sock_unregister(BTPROTO_HCI
);
1240 proto_unregister(&hci_sk_proto
);