Commit Graph

406 Commits

Author SHA1 Message Date
Andrei Emeltchenko 93f71941c6 Bluetooth: trivial: Remove empty line
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-08 17:27:27 -03:00
Andrei Emeltchenko 6b536b5e5e Bluetooth: Remove unneeded zero init
hdev is allocated with kzalloc so zero initialization is not needed.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-08 16:53:48 -03:00
Andrei Emeltchenko bb4b2a9ae3 Bluetooth: mgmt: Managing only BR/EDR HCI controllers
Add check that HCI controller is BR/EDR. AMP controller shall not be
managed by mgmt interface and consequently user space.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:02:54 -03:00
Andrei Emeltchenko 2104786b42 Bluetooth: debug: Add printing num of cmds queued
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-10 15:35:27 -03:00
Andrei Emeltchenko ce2be9acff Bluetooth: Do not auto off AMP controller
Since AMP controller is not managed by user space do not shut it down.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-30 12:35:49 -03:00
Andrei Emeltchenko 9345d40c58 Bluetooth: Use AUTO_OFF constant in jiffies
Move AUTO_OFF_TIMEOUT to other constants changing name to
HCI_AUTO_OFF_TIMEOUT and convert to jiffies.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-19 00:12:37 -03:00
Andrei Emeltchenko 11778716ed Bluetooth: Fix not setting HCI_RESET flag for AMP
Move reset function to common initialization section fixing
not setting HCI_RESET flag for amp_init.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-12 00:10:31 -03:00
Andrei Emeltchenko f0e0951007 Bluetooth: Correct debug print specifier for u16 objects
Some functions print u16 objects as "0xc03" others as "0x0c03". Patch
ensures that opcodes printed are the in the same format and consistent
with bluetooth code.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-12 00:08:54 -03:00
Andrei Emeltchenko bda4f23a5c Bluetooth: Add opcode to error message
Sometimes HCI command sending timeouts and gives error message without
specifying which command causes error. Patch makes sure that opcode
is printed to help debugging.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-12 00:07:45 -03:00
Andrei Emeltchenko 5f246e8905 Bluetooth: Update HCI timeouts constants to use msecs_to_jiffies
The HCI constants are always used in form of jiffies. So just
include the conversion from msecs in the define itself. This has the
advantage of making the code where the timeout is used more readable
and avoiding unnecessary conversions.

The patch is similar to commit ba13ccd9 doing the same job for L2CAP

Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-12 00:07:05 -03:00
Andrei Emeltchenko 975b91bb17 Bluetooth: Use standard HCI cmd timeout for RESET
Remove magic and use standard HCI cmd timeout

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-12 00:06:19 -03:00
Andrei Emeltchenko 7490c6c201 Bluetooth: Remove magic disconnect reason
The macro gives a better idea of the what the error really is.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:16 +03:00
Andre Guedes 0431a43ca5 Bluetooth: Filter duplicated reports in LE scan
This patch enables filtering duplicated advertising reports during
LE scan.

Some LE devices advertise using very small intervals generating lots
of equal advertising report events to the host. Each event generates
a mgmt_device_found event which is copied to userspace.

Enabling this feature, duplicated advertising reports are filtered
at controller's link layer. This way, the controller doesn't wake up
the host to report duplicated advertising reports and, consequently,
less data is copied to userspace.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:16 +03:00
Sasha Levin 3df92b31b2 Bluetooth: Really fix registering hci with duplicate name
Commit fc50744 ("Bluetooth: Fix registering hci with duplicate name") didn't
fully fix the duplicate naming issue with devices, and duplicate device names
could still be created:

[  142.484097] device: 'hci1': device_add
[...]
[  150.545263] device: 'hci1': device_add
[  150.550128] kobject: 'hci1' (ffff880014cc4e58): kobject_add_internal: parent: 'bluetooth', set: 'devices'
[  150.558979] ------------[ cut here ]------------
[  150.561438] WARNING: at fs/sysfs/dir.c:529 sysfs_add_one+0xb0/0xd0()
[  150.572974] Hardware name: Bochs
[  150.580502] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1'
[  150.584444] Pid: 7563, comm: trinity-child1 Tainted: G        W    3.4.0-next-20120524-sasha #296
[...]

Instead of the weird logic and the attempt at keeping the device list sorted,
just use an IDA.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:10 +03:00
Andrei Emeltchenko 82781e634f Bluetooth: Use __constant modifier in HCI code
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:09 +03:00
Gustavo Padovan 8449e381a8 Bluetooth: Remove unneeded EXPORT_SYMBOL
After l2cap, sco and bluetooth modules merge some symbols doesn't need to
be exported anymore.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Gustavo Padovan 8c520a5992 Bluetooth: Remove unnecessary headers include
Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Gustavo Padovan 8fc9ced398 Bluetooth: Fix coding style in the subsystem
This is some leftover from the last patches that fixed style. It is mostly
line over 80 characters fixes reported by checkpatch.pl.
checkpatch.pl is clean for these files now.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Gustavo Padovan 6039aa73a1 Bluetooth: Remove most of the inline usage
Only obvious cases were left as inline, mostly oneline functions.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:07 +03:00
Andrei Emeltchenko 9b3b44604a Bluetooth: Use defined link key size
Remove magic number with defined link key size.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:06 +03:00
Szymon Janc a6c511c636 Bluetooth: Rename HCI_QUIRK_NO_RESET to HCI_QUIRK_RESET_ON_CLOSE
HCI_QUIRK_NO_RESET name is misleading - purpose of this quirk is to
reset device on close instead of init, not to not reset at all.
Rename it to HCI_QUIRK_RESET_ON_CLOSE to avoid confusion.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:06 +03:00
Gustavo Padovan a8c5fb1afe Bluetooth: Fix coding style in hci_core.c
Follow net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:01 +03:00
Gustavo Padovan 087bfd99f7 Bluetooth: Fix packet size provided to the controller
When building fragmented skb's skb->len keeps track of the size of head
plus all fragments combined, however when queueing the skb for sending we
need to report the head size instead of the total size, so we just set
skb->len to skb_headlen().

This bug appeared when implementing MSG_MORE support for L2CAP sockets, it
never showed up before because l2cap_skbuff_fromiovec() never accounted skb
size correctly. A following patch will fix this.

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Reviewed-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-16 16:12:49 -03:00
Gustavo Padovan 08e6d907fe Merge git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-05-16 16:11:44 -03:00
Johan Hedberg 671267bf3a Bluetooth: mgmt: Fix device_connected sending order
The mgmt_ev_device_connected signal must be sent before any event
indications happen for sockets associated with the connection. Otherwise
e.g. device authorization for the sockets will fail with ENOTCONN as
user space things that there is no baseband link.

This patch fixes the issue by ensuring that the device_connected event
if sent (if it hasn't been so already) as soon as the first ACL data
packet arrives from the remote device.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-14 13:56:15 -04:00
Andre Guedes 479453d5fe Bluetooth: Remove advertising cache
User-space pass the remote device address type to kernel through
struct sockaddr_l2 what makes the advertising useless. This patch
removes all advertising cache code.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:46 -03:00
Andre Guedes 31f7956c66 Bluetooth: Move bdaddr_to_le to hci_core
This patch moves the helper function bdaddr_to_le to hci_core, so it
can be used in mgmt.c and hci_conn.c.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:44 -03:00
David Herrmann d8ce939525 Bluetooth: Remove unneeded initialization in hci_alloc_dev()
We allocate memory with kzalloc() so there is no need to call
memset(..., 0, ...) or similar.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:40 -03:00
David Herrmann b1b813d477 Bluetooth: Move device initialization to hci_alloc_dev()
We currently initialize locks, lists, works, etc. in hci_register_dev()
(hci_alloc_dev() was added later) which is bogus because an hdev is in an
invalid state if it is not registered.
This patch moves all memory initialization to hci_alloc_dev(). Device
registering and registration of sub-modules is still left in
hci_register_dev() as it belongs there.

The benefit is (despite cleaning up the code-base) we can now always be
sure that an hdev is a valid object and can be locked and worked on even
though it may not be registered.

This patch also reorders the initialization to be easier to understand.
First the memory is initialized, then all generic structures and as last
step the sub-init functions are called. This guarantees that all
dependencies are initialized in the right order and makes it also easier
to find a specific line. We previously initialized it in the same order as
the "struct hci_dev" is declared which seems pretty random.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:40 -03:00
David Herrmann 9be0dab793 Bluetooth: Move hci_alloc/free_dev close to hci_register/unregister_dev
alloc() and register() (and free() and unregister()) are closely related
so move them more closely together. This will also allow to move
functionality from register() to alloc() without needing
forward-declarations.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:39 -03:00
Ulisses Furquim fc50744c1e Bluetooth: Fix registering hci with duplicate name
When adding HCI devices hci_register_dev assigns the same name
hci1 for subsequently added AMP devices.

...
[ 6958.381886] sysfs: cannot create duplicate filename
       '/devices/virtual/bluetooth/hci1
...

We assume id starts with the number we'll try to add the new device
and keep iterating until we find the proper place. The only difference
is we start with 0 for BR/EDR device and 1 for AMP devices (thus AMP
devices will never receive register as index 0). Then every hdev->id in
the _ordered_ list <= to the id we want we increment id and move the
variable head. In the end we'll have id as the first available one and
head is where you need to add hdev after to keep the list ordered.

Reported-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:38 -03:00
Andrei Emeltchenko 2d8b3a1162 Bluetooth: Fix debug printing unallocated name
It does make sense to print hdev name after allocation.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:35 -03:00
Mikel Astiz abc5de8f4e Bluetooth: Use unsigned int instead of signed int
The involved values are all unsigned and thus unsigned int should be
used instead of signed int. Assigning ~0 to a signed int results in -1,
which is confusing and error-prone, while the code is trying to set the
maximum value possible.

The code still works because the C standard defines that unsigned
comparison will be performed in these cases, when comparing an unsigned
int and a signed int.

Signed-off-by: Mikel Astiz <mikel.astiz.oss@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:31 -03:00
Andrei Emeltchenko 6bcbc4893f Bluetooth: Add Read Local AMP Info to init
AMP Info will be used in Discovery Response.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 00:41:39 -03:00
Hemant Gupta b24c62471c Bluetooth: Fix clearing discovery type when stopping discovery
This patch prevents resetting of discovery type while stopping
discovery, since otherwise the wrong type might be send in case of
discovery failure. It also doesn't matter that we are "lazy" with
updating the type since it is anyway reset when starting discovery again
and it's not needed to know the current discovery state.

Signed-off-by: Hemant Gupta <hemant.gupta@stericsson.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:37 -03:00
Andre Guedes 7537e5c306 Bluetooth: Replace EPERM by EALREADY in hci_cancel_inquiry
We should return -EALREADY in hci_cancel_inquiry since it is more
suitable than -EPERM error code.

Signed-off-by: Andre Guedes <aguedespe@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 00:41:33 -03:00
Andre Guedes 7dbfac1d72 Bluetooth: Add hci_cancel_le_scan() to hci_core
This patch adds to hci_core the hci_cancel_le_scan function which
should be used to cancel an ongoing LE scan.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:32 -03:00
Andrei Emeltchenko 1036b89042 Bluetooth: Fix opcode access in hci_complete
opcode to be accessed is in le16 format so convert it
first to cpu byte order.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-05-09 00:41:32 -03:00
Andrei Emeltchenko 9a00665792 Bluetooth: Correct type for ediv to __le16
Correct type warnings reported by sparse to show that this
functions takes ediv argument in __le16 format.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-05-09 00:41:29 -03:00
John W. Linville 4dcc0637fc Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-04-27 15:16:43 -04:00
Vishal Agarwal 6ec5bcadc2 Bluetooth: Temporary keys should be retained during connection
If a key is non persistent then it should not be used in future
connections but it should be kept for current connection. And it
should be removed when connecion is removed.

Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-04-16 12:57:45 +03:00
Vishal Agarwal 745c0ce35f Bluetooth: hci_persistent_key should return bool
This patch changes the return type of function hci_persistent_key
from int to bool because it makes more sense to return information
whether a key is persistent or not as a bool.

Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-04-16 12:57:40 +03:00
John W. Linville 41833af713 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-04-09 15:47:49 -04:00
David Howells 9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
Johan Hovold 9432496206 Bluetooth: hci_core: fix NULL-pointer dereference at unregister
Make sure hci_dev_open returns immediately if hci_dev_unregister has
been called.

This fixes a race between hci_dev_open and hci_dev_unregister which can
lead to a NULL-pointer dereference.

Bug is 100% reproducible using hciattach and a disconnected serial port:

0. # hciattach -n /dev/ttyO1 any noflow

1. hci_dev_open called from hci_power_on grabs req lock
2. hci_init_req executes but device fails to initialise (times out
   eventually)
3. hci_dev_open is called from hci_sock_ioctl and sleeps on req lock
4. hci_uart_tty_close calls hci_dev_unregister and sleeps on req lock in
   hci_dev_do_close
5. hci_dev_open (1) releases req lock
6. hci_dev_do_close grabs req lock and returns as device is not up
7. hci_dev_unregister sleeps in destroy_workqueue
8. hci_dev_open (3) grabs req lock, calls hci_init_req and eventually sleeps
9. hci_dev_unregister finishes, while hci_dev_open is still running...

[   79.627136] INFO: trying to register non-static key.
[   79.632354] the code is fine but needs lockdep annotation.
[   79.638122] turning off the locking correctness validator.
[   79.643920] [<c00188bc>] (unwind_backtrace+0x0/0xf8) from [<c00729c4>] (__lock_acquire+0x1590/0x1ab0)
[   79.653594] [<c00729c4>] (__lock_acquire+0x1590/0x1ab0) from [<c00733f8>] (lock_acquire+0x9c/0x128)
[   79.663085] [<c00733f8>] (lock_acquire+0x9c/0x128) from [<c0040a88>] (run_timer_softirq+0x150/0x3ac)
[   79.672668] [<c0040a88>] (run_timer_softirq+0x150/0x3ac) from [<c003a3b8>] (__do_softirq+0xd4/0x22c)
[   79.682281] [<c003a3b8>] (__do_softirq+0xd4/0x22c) from [<c003a924>] (irq_exit+0x8c/0x94)
[   79.690856] [<c003a924>] (irq_exit+0x8c/0x94) from [<c0013a50>] (handle_IRQ+0x34/0x84)
[   79.699157] [<c0013a50>] (handle_IRQ+0x34/0x84) from [<c0008530>] (omap3_intc_handle_irq+0x48/0x4c)
[   79.708648] [<c0008530>] (omap3_intc_handle_irq+0x48/0x4c) from [<c037499c>] (__irq_usr+0x3c/0x60)
[   79.718048] Exception stack(0xcf281fb0 to 0xcf281ff8)
[   79.723358] 1fa0:                                     0001e6a0 be8dab00 0001e698 00036698
[   79.731933] 1fc0: 0002df98 0002df38 0000001f 00000000 b6f234d0 00000000 00000004 00000000
[   79.740509] 1fe0: 0001e6f8 be8d6aa0 be8dac50 0000aab8 80000010 ffffffff
[   79.747497] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[   79.756011] pgd = cf3b4000
[   79.758850] [00000000] *pgd=8f0c7831, *pte=00000000, *ppte=00000000
[   79.765502] Internal error: Oops: 80000007 [#1]
[   79.770294] Modules linked in:
[   79.773529] CPU: 0    Tainted: G        W     (3.3.0-rc6-00002-gb5d5c87 #421)
[   79.781066] PC is at 0x0
[   79.783721] LR is at run_timer_softirq+0x16c/0x3ac
[   79.788787] pc : [<00000000>]    lr : [<c0040aa4>]    psr: 60000113
[   79.788787] sp : cf281ee0  ip : 00000000  fp : cf280000
[   79.800903] r10: 00000004  r9 : 00000100  r8 : b6f234d0
[   79.806427] r7 : c0519c28  r6 : cf093488  r5 : c0561a00  r4 : 00000000
[   79.813323] r3 : 00000000  r2 : c054eee0  r1 : 00000001  r0 : 00000000
[   79.820190] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
[   79.827728] Control: 10c5387d  Table: 8f3b4019  DAC: 00000015
[   79.833801] Process gpsd (pid: 1265, stack limit = 0xcf2802e8)
[   79.839965] Stack: (0xcf281ee0 to 0xcf282000)
[   79.844573] 1ee0: 00000002 00000000 c0040a24 00000000 00000002 cf281f08 00200200 00000000
[   79.853210] 1f00: 00000000 cf281f18 cf281f08 00000000 00000000 00000000 cf281f18 cf281f18
[   79.861816] 1f20: 00000000 00000001 c056184c 00000000 00000001 b6f234d0 c0561848 00000004
[   79.870452] 1f40: cf280000 c003a3b8 c051e79c 00000001 00000000 00000100 3fa9e7b8 0000000a
[   79.879089] 1f60: 00000025 cf280000 00000025 00000000 00000000 b6f234d0 00000000 00000004
[   79.887756] 1f80: 00000000 c003a924 c053ad38 c0013a50 fa200000 cf281fb0 ffffffff c0008530
[   79.896362] 1fa0: 0001e6a0 0000aab8 80000010 c037499c 0001e6a0 be8dab00 0001e698 00036698
[   79.904998] 1fc0: 0002df98 0002df38 0000001f 00000000 b6f234d0 00000000 00000004 00000000
[   79.913665] 1fe0: 0001e6f8 be8d6aa0 be8dac50 0000aab8 80000010 ffffffff 00fbf700 04ffff00
[   79.922302] [<c0040aa4>] (run_timer_softirq+0x16c/0x3ac) from [<c003a3b8>] (__do_softirq+0xd4/0x22c)
[   79.931945] [<c003a3b8>] (__do_softirq+0xd4/0x22c) from [<c003a924>] (irq_exit+0x8c/0x94)
[   79.940582] [<c003a924>] (irq_exit+0x8c/0x94) from [<c0013a50>] (handle_IRQ+0x34/0x84)
[   79.948913] [<c0013a50>] (handle_IRQ+0x34/0x84) from [<c0008530>] (omap3_intc_handle_irq+0x48/0x4c)
[   79.958404] [<c0008530>] (omap3_intc_handle_irq+0x48/0x4c) from [<c037499c>] (__irq_usr+0x3c/0x60)
[   79.967773] Exception stack(0xcf281fb0 to 0xcf281ff8)
[   79.973083] 1fa0:                                     0001e6a0 be8dab00 0001e698 00036698
[   79.981658] 1fc0: 0002df98 0002df38 0000001f 00000000 b6f234d0 00000000 00000004 00000000
[   79.990234] 1fe0: 0001e6f8 be8d6aa0 be8dac50 0000aab8 80000010 ffffffff
[   79.997161] Code: bad PC value
[   80.000396] ---[ end trace 6f6739840475f9ee ]---
[   80.005279] Kernel panic - not syncing: Fatal exception in interrupt

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-03-28 12:02:35 -03:00
Gustavo F. Padovan 04124681f1 Bluetooth: fix conding style issues all over the tree
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-03-08 02:02:26 -03:00
Andre Guedes 74fe619ef9 Bluetooth: Don't force DISCOVERY_STOPPED state in inquiry_cache_flush
We are not supposed to force DISCOVERY_STOPPED in inquiry_cache_flush
because we may break the discovery state machine. For instance, during
interleaved discovery, when we are about to start inquiry, the state
machine forcibly goes to DISCOVERY_STOPPED while it should stay in
DISCOVERY_FINDING state.

This problem results in unexpected behaviors such as sending two
mgmt_discovering events to userspace (when only one event is expected)
and Stop Discovery failures.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-03-03 01:43:02 +02:00
Johan Hedberg 75fb0e324d Bluetooth: Fix init sequence for some CSR based controllers
Some CSR controllers will generate a spontaneous reset during init and
just eat up any pending command without sending a command complete for
it. This patch solves the issue by just resending whatever was the last
sent command. hci_send_cmd is not used since we need to bypass all other
commands in the send queue.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-03-01 21:44:55 +02:00
Dan Carpenter 89bb46d020 Bluetooth: change min_t() cast in hci_reassembly()
"count" is type int so the cast to __u16 truncates the high bits away
and triggers a Smatch static checker warning.  It looks like a high
value of count could cause a forever loop, but I didn't follow it
through to see if count is capped somewhere.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-29 16:19:37 +02:00
Johan Hedberg 388fc8faf2 Bluetooth: mgmt: Add legacy pairing info to dev_found events
This patch makes sure that legacy pairing vs SSP infomation gets
properly propageted to the device_found events in the form of the legacy
pairing flag.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-23 13:07:01 +02:00
Johan Hedberg 09b3c3fbbe Bluetooth: Fix clearing of dev_class when powering down
We should assume a value of 0 for the device class when powered off.
The appropriate place to do this is in hci_dev_do_close().

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-23 13:07:00 +02:00
Johan Hedberg e59fda8dc1 Bluetooth: Fix EIR data clearing when powering off
When powering off we should assume that the EIR data isn't valid
anymore. This patch makes sure it gets cleared in hci_dev_do_close and
thereby ensures that a correct new EIR is recreated when powering on
again.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-23 13:06:59 +02:00
Marcel Holtmann 70c1f20b00 Bluetooth: Fix two minor style issues in HCI code
WARNING: min() should probably be min_t(__u16, scb->expect, count)
+		len = min(scb->expect, (__u16)count);

WARNING: Statements terminations use 1 semicolon
+	INIT_LIST_HEAD(&conn->chan_list);;

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-23 13:06:58 +02:00
Johan Hedberg 5e5282bbfd Bluetooth: mgmt: Allow connectable/discoverable changes in off state
This patch makes it possible to toggle the connectable & discoverable
settings when powered off. Two new hdev->dev_flags flags are added to
track what the scan mode should be when the device is finally powered
on.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-21 20:04:39 +02:00
Marcel Holtmann 8ee5654034 Bluetooth: Don't send New Settings event during setup power down
When the controller gets brought up for initial setup, it will be brought
back down after a timeout. In that case, don't send a New Settings event.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-21 13:58:47 +02:00
Johan Hedberg f963e8e9d3 Bluetooth: mgmt: Add address type parameter to Discovering event
This patch adds an address type parameter to the Discovering event. The
value matches that given to Start/Stop Discovery.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-21 00:32:16 +02:00
Marcel Holtmann d7b7e79688 Bluetooth: Set supported settings based on enabled HS and/or LE
Since neither High Speed (HS) nor Low Energy (LE) are fully implemented
yet, only expose them in supported settings when enabled.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-20 23:08:17 +02:00
Marcel Holtmann cd82e61c11 Bluetooth: Add support for HCI monitor channel
The HCI monitor channel can be used to monitor all packets and events
from the Bluetooth subsystem. The monitor is not bound to any specific
HCI device and allows even capturing multiple devices at the same time.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-20 23:03:24 +02:00
Marcel Holtmann 040030ef7d Bluetooth: Remove HCI notifier handling
The HCI notifier handling was never used outside of Bluetooth core layer
and thus remove it and replace it with direct function calls. Also move
the stack internal event generation into the HCI socket layer.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-20 15:59:22 +02:00
Marcel Holtmann 470fe1b540 Bluetooth: Split sending for HCI raw and control sockets
The sending functions for HCI raw and control sockets have nothing in
common except that they iterate over the socket list. Split them into
two so they can do their job more efficient. In addition the code becomes
more readable.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-20 15:55:11 +02:00
Andre Guedes 343f935bfa Bluetooth: Merge INQUIRY and LE_SCAN discovery states
This patch merges DISCOVERY_INQUIRY and DISCOVERY_LE_SCAN states
into a new state called DISCOVERY_FINDING.

From the discovery perspective, we are pretty much worried about
to know just if we are finding devices than what exactly phase of
"finding devices" (inquiry or LE scan) we are currently running.
Besides, to know if the controller is performing inquiry or LE scan
we should check HCI_INQUIRY or HCI_LE_SCAN bits in hdev flags.

Moreover, merging this two states will simplify the discovery state
machine and will keep interleaved discovery implementation simpler.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-19 12:34:09 +02:00
Andre Guedes 4aab14e550 Bluetooth: Track discovery type
This patch adds to struct discovery_state the field 'type' so that
we can track the discovery type the device is performing.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-19 12:33:49 +02:00
Andre Guedes 7b99b659d9 Bluetooth: Fix event sending with DISCOVERY_STOPPED state
We are not supposed to send mgmt_discovering events if we are transiting
from DISCOVERY_STARTING to DISCOVERY_STOPPED state. It doesn't make
sense to send mgmt_discovering event once discovery procedure has not
been even started.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-15 15:23:36 +02:00
Johan Hedberg 88c1fe4ba5 Bluetooth: Add address type to mgmt blacklist messages
This patch updates the implmentation for mgmt_block_device and
mgmt_unblock_device and their corresponding events to match the latest
API specification.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:36 +02:00
Andre Guedes 28b75a8948 Bluetooth: Add hci_le_scan()
We are not supposed to block in start_discovery() because
start_discovery code is running in write() syscall context
and this would block the write operation on the mgmt socket.
This way, we cannot directly call hci_do_le_scan() to scan
LE devices in start_discovery(). To overcome this issue a
derefered work (hdev->le_scan) was created so we can properly
call hci_do_le_scan().

The helper function hci_le_scan() simply set LE scan parameters
and queue hdev->le_scan work. The work is queued on system_long_wq
since it can sleep for a few seconds in the worst case (timeout).

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:34 +02:00
Andre Guedes 7ba8b4be38 Bluetooth: Add hci_do_le_scan()
This patch adds to hci_core the hci_do_le_scan function which
should be used to scan LE devices.

In order to enable LE scan, hci_do_le_scan() sends commands (Set
LE Scan Parameters and Set LE Scan Enable) to the controller and
waits for its results. If commands were executed successfully a
delayed work is scheduled to disable the ongoing scanning after
some amount of time. This function blocks.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:34 +02:00
Andre Guedes 6fbe195dc4 Bluetooth: Minor code refactoring
This patch does a trivial code refacting in hci_discovery_active.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:34 +02:00
Andre Guedes c599008f8f Bluetooth: LE scan should send Discovering events
Send MGMT Discovering events once LE scan starts/stops so the
userspace can track when local adapters are discovering LE devices.

This way, we also keep the same behavior of inquiry which sends MGMT
Discovering events once inquiry starts/stops even if it is triggered
by an external tool (e.g. hcitool).

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:34 +02:00
Johan Hedberg 8af5946741 Bluetooth: Add missing QUIRK_NO_RESET test to hci_dev_do_close
We should only perform a reset in hci_dev_do_close if the
HCI_QUIRK_NO_RESET flag is set (since in such a case a reset will not be
performed when initializing the device).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:34 +02:00
Andrei Emeltchenko 63d2bc1b9a Bluetooth: Helper removes duplicated code
Use __check_timout helper to remove duplicated code

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:33 +02:00
Andrei Emeltchenko b71d385a18 Bluetooth: Recalculate sched HCI blk/pkt flow ctrl
Split HCI scheduling for block and packet flow control.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:33 +02:00
Vinicius Costa Gomes 261cc5aa9e Bluetooth: Add support for notifying userspace of new LTK's
If we want to have proper pairing support over LE we need to
inform userspace that a new LTK is available, so userspace
can store that key permanently.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:33 +02:00
Vinicius Costa Gomes c9839a11c0 Bluetooth: Use the updated key structures for handling LTKs
This updates all the users of the older way, that was using the
link_keys list to store the SMP keys, to use the new way.

This includes defining new types for the keys, we have a type for each
combination of STK/LTK and Master/Slave.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:33 +02:00
Vinicius Costa Gomes b899efaf9b Bluetooth: Add new structures for handling SMP Long Term Keys
This includes a new list for storing the keys and a new structure used
to represent each key.

Some notes: authenticated is used to identify that the key may be used
to setup a HIGH security link. As the same list is used to store both
the STK's and the LTK's the type field is used so we can separate
between those two types of keys and if the key should be used when
in the master or slave role.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:32 +02:00
Andre Guedes 4777bfdebb Bluetooth: Use GFP_KERNEL in hci_add_adv_entry()
This function is not called in interrupt context anymore, so it
should use GFP_KERNEL to allocate memory.

Signed-off-by: Andre Guedes <aguedespe@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:31 +02:00
Fabio Estevam 8b281b9c78 Bluetooth: Fix 'enable_hs' type
Fix the following build warning:

  CC [M]  net/bluetooth/hci_core.o
net/bluetooth/hci_core.c: In function ‘__check_enable_hs’:
net/bluetooth/hci_core.c:2587: warning: return from incompatible pointer type

module_param in hci_core.c passes 'enable_hs' as bool format, so fix
this variable definition type.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:25 +02:00
Johan Hedberg a3d4e20a88 Bluetooth: Sort to-be-resolved devices by RSSI during discovery
This patch makes sure that devices with stronger signal (RSSI closer to
0) are sorted first in the resolve list and will therefore get their
names resolved first during device discovery. Since it's more likely
that the device the user is trying to discover has a strong signal due
to its proximity this ensures that the user gets the "device found"
event for it more quickly.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:25 +02:00
Johan Hedberg a8b2d5c2cf Bluetooth: Move mgmt related flags from hdev->flags to hdev->dev_flags
There's no point in exposing these to user-space (which is what happens
to everything in hdev->flags) so move them to dev_flags instead.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:25 +02:00
David Herrmann dc946bd86f Bluetooth: Remove __hci_dev_put/hold
Since we remove the owner field of hci_dev hci_dev_put and __hci_dev_put
do the same so we can merge them into one function. Same for
hci_dev_hold and __hci_dev_hold.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:24 +02:00
David Herrmann 4c724c7135 Bluetooth: Correctly take hci_dev->dev refcount
The hci_dev->dev device structure has an internal refcount. This
refcount is used to protect the whole hci_dev object. However, we
currently do not use it.  Therefore, if someone calls hci_free_dev() we
currently immediately destroy the hci_dev object because we never took
the device refcount.

This even happens if the hci_dev->refcnt is not 0. In fact, the
hci_dev->refcnt is totally useless in its current state. Therefore, we
simply remove hci_dev->refcnt and instead use hci_dev->dev refcnt.

This fixes all the symptoms and also correctly integrates the device
structure into our bluetooth bus system.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:24 +02:00
David Herrmann e9b9cfa157 Bluetooth: Remove HCI-owner field
After unregistering an hci_dev object a bluetooth driver does not have
any callbacks in the hci_dev structure left over. Therefore, there is no
need to keep a reference to the module.

Previously, we needed this to protect the hci-destruct callback.
However, this callback is no longer available so we do not need this
owner field, anymore.  Drivers now call hci_unregister_dev() and they
are done with the object.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:24 +02:00
David Herrmann 010666a126 Bluetooth: Make hci-destruct callback optional
Several drivers already provide an empty callback so we can actually
make this optional and then remove all those empty callbacks in the
drivers.

This callback isn't needed at all by most drivers as they can remove
their allocated structures on device disconnect and not on hci
destruction.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:22 +02:00
Andrei Emeltchenko cc48dc0a99 Bluetooth: Remove magic number from ACL TO
Adds HCI_ACL_TX_TIMEOUT and clear conversion from msec to jiffies

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-02-13 17:01:21 +02:00
Johan Hedberg 30dc78e1a2 Bluetooth: Add name resolving support for mgmt based discovery
This patch adds the necessary logic to perform name lookups after
inquiry completes. This is done by checking for entries in the resolve
list after each inquiry complete and remote name complete HCI event.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:20 +02:00
Johan Hedberg ff9ef57870 Bluetooth: Add discovery state tracking
This patch adds proper state tracking to the device discovery process.
This makes it possible to return appropriate errors when trying to stop
a non-active discovery or start discovery when it is already ongoing.
Once name resolving is implemented this also makes it possible to know
what the right action to do is when a remote name lookup is cancelled.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:20 +02:00
Johan Hedberg 30883512be Bluetooth: Rename hdev->inq_cache to hdev->discovery
This struct is used for not just inquiry caching but also for general
device discovery state tracking so it's better to rename it to something
more appropriate.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:20 +02:00
Johan Hedberg 4663262c29 Bluetooth: Flush inquiry cache when starting mgmt triggered inquiry
For the remote name state tracking for the management interface to work
the cache needs to be flushed whenever inquiry is started. The
hci_do_inquiry function is only used by the management interface so by
having the flushing done from it ensures that old ioctl based
functionality isn't affected.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:20 +02:00
Johan Hedberg 3175405b90 Bluetooth: Return updated name state with hci_inquiry_cache_update
If user-space has already confirmed the name for a remote device we
shouldn't request confirmation again. The simplest way to do this is to
return the name state from hci_inquiry_cache_update (if it is anything
else than unknown then we do not need confirmation from user-space).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:20 +02:00
Johan Hedberg 561aafbcb2 Bluetooth: Add initial mgmt_confirm_name support
This patch adds initial support for mgmt_confirm_name. It adds the
necessary tracking of the name state by extending the inquiry cache. The
actual name resolving operation (to be done once inquiry is finished) is
not yet part of this patch.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:19 +02:00
Johan Hedberg b57c1a5646 Bluetooth: Convert inquiry cache to use standard list types
This makes it possible to use the convenience functions provided for
standard kernel list types and it also makes it easier to extend the use
of the cache for the management interface where e.g. name resolving
control will be needed.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
2012-02-13 17:01:19 +02:00
David S. Miller 117ff42fd4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-01-04 21:35:43 -05:00
Gustavo F. Padovan cad44c2bf6 Revert "Bluetooth: Increase HCI reset timeout in hci_dev_do_close"
This reverts commit e1b6eb3ccb.

This was causing a delay of 10 seconds in the resume process of a Thinkpad
laptop. I'm afraid this could affect more devices once 3.2 is released.

Reported-by: Tomáš Janoušek <tomi@nomi.cz>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-23 19:00:02 -02:00
Gustavo F. Padovan af3e6359a2 Bluetooth: Don't disable interrupt when locking the queue
We run everything in process context now.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 18:07:01 -02:00
Gustavo F. Padovan f20d09d5f7 Bluetooth: remove *_bh usage from hci_dev_list and hci_cb_list
They don't need to disable interrupts anymore, we only run in process
context now.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 18:06:24 -02:00
Ulisses Furquim 686ebf283b Bluetooth: Make HCI call directly into SCO and L2CAP event functions
The struct hci_proto and all related register/unregister and dispatching
code was removed. HCI core code now call directly the SCO and L2CAP
event functions.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 14:07:29 -02:00
Ulisses Furquim f2d64f6aa6 Bluetooth: Remove global mutex hci_task_lock
The hci_task_lock mutex (previously a lock) was supposed to protect the
register/unregister of HCI protocols against RX/TX tasks. This will not
be needed anymore because SCO and L2CAP will always be compiled.

Moreover, with the recent move of RX/TX to workqueues per device the
global hci_task_lock was causing starvation between different HCI
devices.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-21 02:19:18 -02:00
Andrei Emeltchenko 2455a3ea0c Bluetooth: Initialize default flow control mode
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-20 16:59:30 -02:00
Andrei Emeltchenko e61ef49966 Bluetooth: Split ctrl init to BREDR and AMP parts
Current controller initialization is moved tp bredr_init and new
function added amp_init to handle later AMP init sequence. Current
AMP init sequence include Reset and Read Local Version.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-20 16:59:12 -02:00
Mat Martineau 65983fc7bb Bluetooth: Incoming ACL packets do not force active mode
Incoming sk_buffs always have bt_cb(skb)->force_active set to 0, so
it's misleading to use that value from the control block when calling
hci_conn_enter_active_mode() for incoming data. The destination socket
is not known in the HCI layer, so the force_active setting for each
socket isn't known either. Hard-coding the force_active parameter does
not change any behavior, but makes it obvious that incoming ACL data
never exits sniff mode.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 21:57:21 -02:00
Johan Hedberg 7d78525dcf Bluetooth: Add timer for automatically disabling the service cache
We do not want the service cache to be enabled indefinitely after
mgmt_read_info is called. To solve this a timer is added which will
automatically disable the cache if mgmt_set_dev_class isn't called
within 5 seconds of calling mgmt_read_info.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:41:04 -02:00
Gustavo F. Padovan 590051de5c Bluetooth: Add ProFUSION's copyright
Add ProFUSION's copyright to some files I've been touching recently.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:59 -02:00
Gustavo F. Padovan 7f971041cf Bluetooth: Use system workqueue to schedule power_on
hdev->workqueue should be only for rx/tx, so move this one out.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:58 -02:00
Gustavo F. Padovan 32845eb124 Bluetooth: Use new alloc_workqueue()
Update hdev workqueue API usage to use the new interface, this new
interface also allow us to mark this workqueue as WQ_HIGHPRI, so now rx
and tx work gets higher priority when running.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:58 -02:00
Gustavo F. Padovan 80b7ab3341 Bluetooth: move power_off to system workqueue
hdev->workqueue will be only for for rx/tx/cmd processing, all other small
works should go to the system workqueue for now.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:58 -02:00
Gustavo F. Padovan 3eff45eaf8 Bluetooth: convert tx_task to workqueue
This should simplify Bluetooth core processing a lot.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:57 -02:00
Gustavo F. Padovan c347b765fe Bluetooth: Move command task to workqueue
As part of the moving on all the Bluetooth processing to Process context.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:57 -02:00
Gustavo F. Padovan bf4c632524 Bluetooth: convert conn hash to RCU
Handling hci_conn_hash with RCU make us avoid some locking and disable
tasklets.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:56 -02:00
Gustavo F. Padovan 8192edef03 Bluetooth: Use RCU to manipulate chan_list
Instead of using tasklet_disable() to prevent acess to the channel use, we
can use RCU and improve the performance of our code.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:56 -02:00
Gustavo F. Padovan 67d0dfb5ec Bluetooth: move hci_task_lock to mutex
Now we can sleep in any path inside Bluetooth core, so mutex can make
sense here.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:56 -02:00
Gustavo F. Padovan db323f2fff Bluetooth: Use delayed work for advertisiment cache timeout
As HCI rx path is now done in process context it makes sense to do all the
timer in process context as well.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:55 -02:00
Gustavo F. Padovan 09fd0de5bd Bluetooth: Replace spin_lock by mutex in hci_dev
Now we run everything in HCI in process context, so it's a better idea use
mutex instead spin_lock. The macro remains hci_dev_lock() (and I got rid
of hci_dev_lock_bh()), of course.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:54 -02:00
Marcel Holtmann b78752cc71 Bluetooth: Process recv path in a workqueue instead of a tasklet
Run recv process in workqueue helps a lot with our processing as the recv
path will also be in the process context, i.e., now all our tx and rx are
in process context.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:54 -02:00
Gustavo F. Padovan 2c33c06a8f Bluetooth: remove struct hci_chan_hash
Only the list member of the struct was used, so we now fold it into
hci_conn.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-16 18:16:14 -02:00
Andrei Emeltchenko ce7e4ad143 Bluetooth: remove old code
Remove old code not touched for several years.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-02 21:26:59 +09:00
Andre Guedes d23264a896 Bluetooth: Add dev_flags to struct hci_dev
This patch adds the dev_flags field to struct hci_dev. This new
flags variable should be used to define flags related to BR/EDR
and/or LE controller itself. It should be used to define flags
which represents states from the controller. The dev_flags is
cleared in case the controller sends a Reset Command Complete
Event to the host.

Also, this patch adds the HCI_LE_SCAN flag which was created to
track if the controller is performing LE scan or not. The flag
is set/cleared when the controller starts/stops scanning.

This is an initial effort to stop using hdev->flags to define
internal flags since it is exported to userspace by an ioctl.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-02 21:19:18 +09:00
Andrei Emeltchenko c6feeb28ae Bluetooth: Use queue in the device list
Use queue instead of stack discipline for device list. When processing
dev_list with list_for_each* devices will be prosessed in order they
were added (Usually BR/EDR first and AMP later).

Also output from hciconfig looks nicer :-)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-21 14:45:38 -02:00
Andrei Emeltchenko 7784d78f18 Bluetooth: making enable_hs independent from L2CAP
Fixes bluetooth compiling when CONFIG_BT_L2CAP is not enabled

net/built-in.o: In function `hci_dev_open':
(.text+0xdce9a): undefined reference to `enable_hs'

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-21 14:44:49 -02:00
Szymon Janc 1ec918cef5 Bluetooth: Fix some checkpatch.pl errors and warnings
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 18:30:21 -02:00
Andrei Emeltchenko 07e3b94ac3 Bluetooth: Do not set HCI_RAW when HS enabled
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-16 16:54:29 -02:00
Johan Hedberg e0f9309f37 Bluetooth: Fix cancel_delayed_work_sync usage with locks
The cancel_delayed_work_sync function should not be used if we hold any
locks. Luckily all places where this is the case it is also safe to use
the non-sync version.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-09 12:33:52 -02:00
Johan Hedberg 56e5cb86eb Bluetooth: Add missing hci_dev locking when calling mgmt functions
Now that the pending commands are within struct hci_dev we can properly
control access to them throught the hci_dev locking mechanism.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-09 12:33:46 -02:00
Johan Hedberg 2e58ef3e11 Bluetooth: Move pending management command list into struct hci_dev
This patch moves the pending management command list (previously global
to mgmt.c) into struct hci_dev. This makes it possible to do proper
locking when accessing it (through the existing hci_dev locks) and
thereby avoid race conditions.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-09 12:33:39 -02:00
Johan Hedberg 744cf19ead Bluetooth: Pass full hci_dev struct to mgmt callbacks
The current global pending command list in mgmt.c is racy. Possibly the
simplest way to fix it is to have per-hci dev lists instead of a global
one (all commands that need a pending struct are hci_dev specific).
This way the list can be protected using the already existing per-hci
dev lock. To enable this refactoring the first thing that needs to be
done is to ensure that the mgmt functions have access to the hci_dev
struct (instead of just the dev id).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-09 12:33:26 -02:00
Johan Hedberg 86742e1eca Bluetooth: Update link key mgmt APIs to match latest spec.
BR/EDR link keys have their own commands and events (separate from SMP)
and the remove_keys command (previously remove_key) removes keys of any
kind for the specified remote address.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 13:03:25 -02:00
Johan Hedberg 3243553fdc Bluetooth: Convert power off mechanism to use delayed_work
The power off code doesn't need to use its own custom timer since the
delayed_work API provides the exact same functionality.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 12:54:10 -02:00
Johan Hedberg 16ab91ab48 Bluetooth: Add timeout field to mgmt_set_discoverable
Based on the revised mgmt API set_discoverable has a timeout parameter
to specify how long the adapter will remain discoverable. A value of 0
means "indefinitively".

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 12:54:09 -02:00
Andre Guedes 023d50498d Bluetooth: Create hci_cancel_inquiry()
This patch adds a function to hci_core to cancel an ongoing inquiry.

According to the Bluetooth spec, the inquiry cancel command should
only be issued after the inquiry command has been issued, a command
status event has been received for the inquiry command, and before
the inquiry complete event occurs.

As HCI_INQUIRY flag is only set just after an inquiry command status
event occurs and it is cleared just after an inquiry complete event
occurs, the inquiry cancel command should be issued only if HCI_INQUIRY
flag is set.

Additionally, cancel inquiry related code from stop_discovery() were
replaced by a hci_cancel_inquiry() call.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 12:54:08 -02:00
Andre Guedes 2519a1fc82 Bluetooth: Create hci_do_inquiry()
This patch adds a function to hci_core to carry out inquiry.

All inquiry code from start_discovery() were replaced by a
hci_do_inquiry() call.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-08 12:54:07 -02:00
Mat Martineau 08add513ca Bluetooth: Guarantee BR-EDR device will be registered as hci0
It's convenient to use the HCI device index the AMP controller id, but
the spec requires that an AMP controller never has id 0.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:25:04 -02:00
Luiz Augusto von Dentz 02b20f0bb6 Bluetooth: recalculate priorities when channels are starving
To avoid starvation the priority is recalculated so that the starving
channels are promoted to HCI_PRIO_MAX - 1 (6).

HCI_PRIO_MAX (7) is considered special, because it requires CAP_NET_ADMIN
capability which can be used to provide more guaranties, so it is not used
when promoting.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:57 -02:00
Luiz Augusto von Dentz ec1cce24d5 Bluetooth: handle priority change within quote
The quote is calculated based on the first buffer in the queue so if the
priority changes to something lower than the priority of the first skb
the quote needs to be recalculated.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:56 -02:00
Luiz Augusto von Dentz 73d80deb7b Bluetooth: prioritizing data over HCI
This implement priority based scheduler using skbuffer priority set via
SO_PRIORITY socket option.

It introduces hci_chan_hash (list of HCI Channel/hci_chan) per connection,
each item in this list refer to a L2CAP connection and it is used to
queue the data for transmission.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:56 -02:00
Szymon Janc 43611a7b16 Bluetooth: Increase HCI reset timeout in hci_dev_do_close
I've noticed that my CSR usb dongle was not working if it was plugged in when
PC was booting. It looks like I get two HCI reset command complete events (see
hcidump logs below).
The root cause is reset called from off_timer. Timeout for this reset to
complete is set to 250ms and my bt dongle requires more time for replying with
command complete event. After that, chip seems to reply with reset command
complete event for next non-reset command.

Attached patch increase mentioned timeout to HCI_INIT_TIMEOUT, this value is
already used for timeouting hci_reset_req in hci_dev_reset().

This might also be related to BT not working after suspend that was reported
here some time ago.

Hcidump log:

2011-09-12 23:13:27.379465 < HCI Command: Reset (0x03|0x0003) plen 0
2011-09-12 23:13:27.380797 > HCI Event: Command Complete (0x0e) plen 4
    Reset (0x03|0x0003) ncmd 1
    status 0x00
2011-09-12 23:13:27.380859 < HCI Command: Read Local Supported Features (0x04|0x000
3) plen 0
2011-09-12 23:13:27.760789 > HCI Event: Command Complete (0x0e) plen 4
    Reset (0x03|0x0003) ncmd 1
    status 0x00
2011-09-12 23:13:27.760831 < HCI Command: Read Local Version Information (0x04|0x00
01) plen 0
2011-09-12 23:13:27.764780 > HCI Event: Command Complete (0x0e) plen 12
    Read Local Version Information (0x04|0x0001) ncmd 1
    status 0x00
    HCI Version: 1.1 (0x1) HCI Revision: 0x36f
    LMP Version: 1.1 (0x1) LMP Subversion: 0x36f
    Manufacturer: Cambridge Silicon Radio (10)

Signed-off-by: Szymon Janc <szymon@janc.net.pl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:50 -02:00
Luiz Augusto von Dentz 8035ded466 Bluetooth: replace list_for_each with list_for_each_entry whenever possible
When all items in the list have the same type there is no much of a point
to use list_for_each except if you want to use the list pointer itself.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:46 -02:00
David Herrmann 59735631d2 Bluetooth: Make hci_unregister_dev return void
hci_unregister_dev cannot fail and always returns 0. The drivers already ignore
the return value so we can safely make it return void.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-11-07 17:24:41 -02:00
John W. Linville c125d5e846 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth 2011-11-02 15:15:51 -04:00
Szymon Janc e1b6eb3ccb Bluetooth: Increase HCI reset timeout in hci_dev_do_close
I've noticed that my CSR usb dongle was not working if it was plugged in when
PC was booting. It looks like I get two HCI reset command complete events (see
hcidump logs below).
The root cause is reset called from off_timer. Timeout for this reset to
complete is set to 250ms and my bt dongle requires more time for replying with
command complete event. After that, chip seems to reply with reset command
complete event for next non-reset command.

Attached patch increase mentioned timeout to HCI_INIT_TIMEOUT, this value is
already used for timeouting hci_reset_req in hci_dev_reset().

This might also be related to BT not working after suspend that was reported
here some time ago.

Hcidump log:

2011-09-12 23:13:27.379465 < HCI Command: Reset (0x03|0x0003) plen 0
2011-09-12 23:13:27.380797 > HCI Event: Command Complete (0x0e) plen 4
    Reset (0x03|0x0003) ncmd 1
    status 0x00
2011-09-12 23:13:27.380859 < HCI Command: Read Local Supported Features (0x04|0x000
3) plen 0
2011-09-12 23:13:27.760789 > HCI Event: Command Complete (0x0e) plen 4
    Reset (0x03|0x0003) ncmd 1
    status 0x00
2011-09-12 23:13:27.760831 < HCI Command: Read Local Version Information (0x04|0x00
01) plen 0
2011-09-12 23:13:27.764780 > HCI Event: Command Complete (0x0e) plen 12
    Read Local Version Information (0x04|0x0001) ncmd 1
    status 0x00
    HCI Version: 1.1 (0x1) HCI Revision: 0x36f
    LMP Version: 1.1 (0x1) LMP Subversion: 0x36f
    Manufacturer: Cambridge Silicon Radio (10)

Signed-off-by: Szymon Janc <szymon@janc.net.pl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31 17:10:18 -02:00
David Herrmann 33ca954daf Bluetooth: Forward errors from hci_register_dev
We need to catch errors when calling hci_add_sysfs() and return them to
the caller to avoid kernel oopses on device_add() failure.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-14 15:22:44 -03:00
David Herrmann ce242970f0 Bluetooth: Rename sysfs un/register to add/del
As we introduced hci_init_sysfs() we should also rename
hci_register_sysfs() and hci_unregister_sysfs() to hci_add_sysfs() and
hci_del_sysfs() like we do with hci_conn_add/del_sysfs(). It looks more
consistent now.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-14 15:22:38 -03:00
David Herrmann 0ac7e7002c Bluetooth: Fix hci core device initialization
We must not call device_del() if we didn't use device_add(). See module.c
for comments on that. Therefore, we need to call device_initialize() when
allocating the hci device and later device_add() instead of
device_register().

This also fixes a bug when hci_register_dev() failed and we call
hci_free_dev() without a valid core device. hci_free_dev() segfaults while
calling put_device() on invalid memory.

We already do this with hci_conn connections (hci_conn_init_sysfs()) so
they do not need to be fixed.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-14 15:22:28 -03:00
Antti Julku 5e762444b0 Bluetooth: Add mgmt events for blacklisting
Add management interface events for blocking/unblocking a device.
Sender of the block device command gets cmd complete and other
mgmt sockets get the event. Event is also sent to mgmt sockets when
blocking is done with ioctl, e.g when blocking a device with
hciconfig. This makes it possible for bluetoothd to track status
of blocked devices when a third party block or unblocks a device.

Event sending is handled in mgmt_device_blocked function which gets
called from hci_blacklist_add in hci_core.c. A pending command is
added in mgmt_block_device, so that it can found when sending the
event - the event is not sent to the socket from which the pending
command came. Locks were moved out from hci_core.c to hci_sock.c
and mgmt.c, because locking is needed also for mgmt_pending_add in
mgmt.c.

Signed-off-by: Antti Julku <antti.julku@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:59:15 -03:00
Vinicius Costa Gomes 1c1def09c4 Bluetooth: Move SMP fields to a separate structure
The objective is to make the core to have as little as possible
information about SMP procedures and logic. Now, all the SMP
specific information is hidden from the core.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:58:12 -03:00
Luiz Augusto von Dentz 52087a792c Bluetooth: make use of connection number to optimize the scheduler
This checks if there is any existing connection according to its type
before start iterating in the list and immediately stop iterating when
reaching the number of connections.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-09-21 12:58:10 -03:00
Szymon Janc 7bdb8a5cf1 Bluetooth: Don't use cmd_timer to timeout HCI reset command
No command should be send before Command Complete event for HCI
reset is received. This fix regression introduced by commit
6bd32326cda(Bluetooth: Use proper timer for hci command timout)
for chips whose reset command takes longer to complete (e.g. CSR)
resulting in next command being send before HCI reset completed.

Signed-off-by: Szymon Janc <szymon@janc.net.pl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-08-11 19:50:27 -03:00
Dan Carpenter 8475e2336c Bluetooth: unlock if allocation fails in hci_blacklist_add()
There was a small typo here so we never actually hit the goto which
would call hci_dev_unlock_bh().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-08-11 19:50:25 -03:00
John W. Linville 95a943c162 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
	net/bluetooth/l2cap_core.c
2011-07-15 10:05:24 -04:00
Vinicius Costa Gomes 726b4ffcaa Bluetooth: Add support for storing the key size
In some cases it will be useful having the key size used for
encrypting the link. For example, some profiles may restrict
some operations depending on the key length.

The key size is stored in the key that is passed to userspace
using the pin_length field in the key structure.

For now this field is only valid for LE controllers. 3.0+HS
controllers define the Read Encryption Key Size command, this
field is intended for storing the value returned by that
command.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-08 18:39:19 -03:00
Vinicius Costa Gomes 75d262c2ad Bluetooth: Add functions to manipulate the link key list for SMP
As the LTK (the new type of key being handled now) has more data
associated with it, we need to store this extra data and retrieve
the keys based on that data.

Methods for searching for a key and for adding a new LTK are
introduced here.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-08 17:36:31 -03:00
Andre Guedes 8aded7110a Bluetooth: Fix potential deadlock in hci_core
Since hdev->lock may be acquired by threads runnning in interrupt
context, all threads running in process context should disable
local bottom halve before locking hdev->lock. This can be done by
using hci_dev_lock_bh macro.

This way, we avoid potencial deadlocks like this one reported by
CONFIG_PROVE_LOCKING=y.

[  304.788780] =================================
[  304.789686] [ INFO: inconsistent lock state ]
[  304.789686] 2.6.39+ #1
[  304.789686] ---------------------------------
[  304.789686] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[  304.789686] ksoftirqd/0/3 [HC0[0]:SC1[1]:HE1:SE0] takes:
[  304.789686]  (&(&hdev->lock)->rlock){+.?...}, at: [<ffffffffa000bbfe>] hci_conn_check_pending+0x38/0x76 [bluetooth]
[  304.789686] {SOFTIRQ-ON-W} state was registered at:
[  304.789686]   [<ffffffff8105188b>] __lock_acquire+0x347/0xd52
[  304.789686]   [<ffffffff810526ac>] lock_acquire+0x8a/0xa7
[  304.789686]   [<ffffffff812b3758>] _raw_spin_lock+0x2c/0x3b
[  304.789686]   [<ffffffffa0009cf0>] hci_blacklist_del+0x1f/0x8a [bluetooth]
[  304.789686]   [<ffffffffa00139fd>] hci_sock_ioctl+0x2d9/0x314 [bluetooth]
[  304.789686]   [<ffffffff812197d8>] sock_ioctl+0x1f2/0x214
[  304.789686]   [<ffffffff810b0fd6>] do_vfs_ioctl+0x46c/0x4ad
[  304.789686]   [<ffffffff810b1059>] sys_ioctl+0x42/0x65
[  304.789686]   [<ffffffff812b4892>] system_call_fastpath+0x16/0x1b
[  304.789686] irq event stamp: 9768
[  304.789686] hardirqs last  enabled at (9768): [<ffffffff812b40d4>] restore_args+0x0/0x30
[  304.789686] hardirqs last disabled at (9767): [<ffffffff812b3f6a>] save_args+0x6a/0x70
[  304.789686] softirqs last  enabled at (9726): [<ffffffff8102fa9b>] __do_softirq+0x129/0x13f
[  304.789686] softirqs last disabled at (9739): [<ffffffff8102fb33>] run_ksoftirqd+0x82/0x133
[  304.789686]
[  304.789686] other info that might help us debug this:
[  304.789686]  Possible unsafe locking scenario:
[  304.789686]
[  304.789686]        CPU0
[  304.789686]        ----
[  304.789686]   lock(&(&hdev->lock)->rlock);
[  304.789686]   <Interrupt>
[  304.789686]     lock(&(&hdev->lock)->rlock);
[  304.789686]
[  304.789686]  *** DEADLOCK ***
[  304.789686]
[  304.789686] 1 lock held by ksoftirqd/0/3:
[  304.789686]  #0:  (hci_task_lock){++.-..}, at: [<ffffffffa0008353>] hci_rx_task+0x49/0x2f3 [bluetooth]
[  304.789686]
[  304.789686] stack backtrace:
[  304.789686] Pid: 3, comm: ksoftirqd/0 Not tainted 2.6.39+ #1
[  304.789686] Call Trace:
[  304.789686]  [<ffffffff812ae901>] print_usage_bug+0x1e7/0x1f8
[  304.789686]  [<ffffffff8100a796>] ? save_stack_trace+0x27/0x44
[  304.789686]  [<ffffffff8104fc3f>] ? print_irq_inversion_bug.part.26+0x19a/0x19a
[  304.789686]  [<ffffffff810504bb>] mark_lock+0x106/0x258
[  304.789686]  [<ffffffff812b40d4>] ? retint_restore_args+0x13/0x13
[  304.789686]  [<ffffffff81051817>] __lock_acquire+0x2d3/0xd52
[  304.789686]  [<ffffffff8102be73>] ? vprintk+0x3ab/0x3d7
[  304.789686]  [<ffffffff812ae126>] ? printk+0x3c/0x3e
[  304.789686]  [<ffffffff810526ac>] lock_acquire+0x8a/0xa7
[  304.789686]  [<ffffffffa000bbfe>] ? hci_conn_check_pending+0x38/0x76 [bluetooth]
[  304.789686]  [<ffffffff811601c6>] ? __dynamic_pr_debug+0x10c/0x11a
[  304.789686]  [<ffffffff812b3758>] _raw_spin_lock+0x2c/0x3b
[  304.789686]  [<ffffffffa000bbfe>] ? hci_conn_check_pending+0x38/0x76 [bluetooth]
[  304.789686]  [<ffffffffa000bbfe>] hci_conn_check_pending+0x38/0x76 [bluetooth]
[  304.789686]  [<ffffffffa000c561>] hci_event_packet+0x38e/0x3e12 [bluetooth]
[  304.789686]  [<ffffffff81052615>] ? lock_release+0x16c/0x179
[  304.789686]  [<ffffffff812b3b41>] ? _raw_read_unlock+0x23/0x27
[  304.789686]  [<ffffffffa0013e7f>] ? hci_send_to_sock+0x179/0x188 [bluetooth]
[  304.789686]  [<ffffffffa00083d2>] hci_rx_task+0xc8/0x2f3 [bluetooth]
[  304.789686]  [<ffffffff8102f5a9>] tasklet_action+0x87/0xe6
[  304.789686]  [<ffffffff8102fa11>] __do_softirq+0x9f/0x13f
[  304.789686]  [<ffffffff8102fb33>] run_ksoftirqd+0x82/0x133
[  304.789686]  [<ffffffff8102fab1>] ? __do_softirq+0x13f/0x13f
[  304.789686]  [<ffffffff81040f0a>] kthread+0x7f/0x87
[  304.789686]  [<ffffffff812b55c4>] kernel_thread_helper+0x4/0x10
[  304.789686]  [<ffffffff812b40d4>] ? retint_restore_args+0x13/0x13
[  304.789686]  [<ffffffff81040e8b>] ? __init_kthread_worker+0x53/0x53
[  304.789686]  [<ffffffff812b55c0>] ? gs_change+0x13/0x13

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-07 14:28:12 -03:00
Andre Guedes 2e65c9d2c5 Bluetooth: Remove enable_smp parameter
The enable_smp parameter is no longer needed. It can be replaced by
checking lmp_host_le_capable.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-06 19:10:45 -03:00
Andre Guedes eead27da60 Bluetooth: Add lmp_host_le_capable() macro
Since we have the extended LMP features properly implemented, we
should check the LMP_HOST_LE bit to know if the host supports LE.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-07-06 19:10:41 -03:00
Joe Perches e175072f37 Bluetooth: Rename function bt_err to bt_to_errno
Make it easier to use more normal logging styles later.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 18:44:08 -03:00
John W. Linville 36099365c7 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
	drivers/net/wireless/rtlwifi/pci.c
	include/linux/netlink.h
2011-06-24 15:25:51 -04:00
Gustavo F. Padovan a7925bd27d Bluetooth: Fix locking in blacklist code
There was no unlock call on the errors path

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-17 16:15:10 -03:00
Antti Julku b2a66aad86 Bluetooth: Move blacklisting functions to hci_core
Move blacklisting functions to hci_core.c, so that they can
be used by both management interface and hci socket interface.

Signed-off-by: Antti Julku <antti.julku@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-16 15:19:41 -03:00
Vinicius Costa Gomes 3a0259bb80 Bluetooth: Add support for using the crypto subsystem
This will allow using the crypto subsystem for encrypting data. As SMP
(Security Manager Protocol) is implemented almost entirely on the host
side and the crypto module already implements the needed methods
(AES-128), it makes sense to use it.

There's now a new module option to enable/disable SMP support.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-13 15:48:22 -03:00
Jaikumar Ganesh 14b12d0b98 Bluetooth: Add BT_POWER L2CAP socket option.
Add BT_POWER socket option used to control the power
characteristics of the underlying ACL link. When the remote end
has put the link in sniff mode and the host stack wants to send
data we need need to explicitly exit sniff mode to work well with
certain devices (For example, A2DP on Plantronics Voyager 855).
However, this causes problems with HID devices.

Hence, moving into active mode when sending data, irrespective
of who set the sniff mode has been made as a socket option. By
default, we will move into active mode. HID devices can set the
L2CAP socket option to prevent this from happening.

Currently, this has been implemented for L2CAP sockets. This has been
tested with incoming and outgoing L2CAP sockets for HID and A2DP.

Based on discussions on linux-bluetooth and patches submitted by
Andrei Emeltchenko.

Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:19 -03:00
Andre Guedes 3581508571 Bluetooth: Advertising entries lifetime
This patch adds a timer to clear 'adv_entries' after three minutes.

After some amount of time, the advertising entries cached during
the last LE scan should be considered expired and they should be
removed from the advertising cache.

It was chosen a three minutes timeout as an initial attempt. This
value might change in future.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:17 -03:00
Andre Guedes 76c8686f88 Bluetooth: LE advertising cache
This patch implements the LE advertising cache. It stores sensitive
information (bdaddr and bdaddr_type so far) gathered from LE
advertising report events.

Only advertising entries from connectables devices are added to the
cache.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-08 16:58:17 -03:00
Joe Perches f81c622420 net: Remove unnecessary semicolons
Semicolons are not necessary after switch/while/for/if braces
so remove them.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-05 14:33:39 -07:00
John W. Linville a70171dce9 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
	drivers/net/wireless/libertas/if_cs.c
	drivers/net/wireless/rtlwifi/pci.c
	net/bluetooth/l2cap_sock.c
2011-05-05 13:32:35 -04:00
John W. Linville dee04cac28 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next-2.6 2011-04-29 15:28:49 -04:00
Johan Hedberg 4df378a10e Bluetooth: Add store_hint parameter to mgmt_new_key
Even for keys that shouldn't be stored some use cases require the
knowledge of a new key having been created so that the conclusion of a
successful pairing can be made. Therefore, always send the mgmt_new_key
event but add a store_hint parameter to it to indicate to user space
whether the key should be stored or not.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 16:14:43 -03:00
Johan Hedberg 4748fed2d1 Bluetooth: Remove old_key_type from mgmt_ev_new_key
User space shouldn't have any need for the old key type so remove it
from the corresponding Management interface event.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 16:14:42 -03:00
Johan Hedberg 655fe6ece7 Bluetooth: Fix connection key type updating for buggy controllers
If a controller generates a changed combination key as its first key the
connection key type will not be correctly set. In these situations make
sure the update the connection key type when such a buggy controller is
detected.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 16:14:41 -03:00
Johan Hedberg 12adcf3a95 Bluetooth: Fix old_key_type logic for non-persistent keys
Even if there's no previous key stored the connection might still be
secured with a non-persistent key and in that case the key type in the
hci_conn struct should be checked.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 16:14:41 -03:00
Johan Hedberg d25e28abe5 Bluetooth: Fix link key persistent storage criteria
Link keys should only be stored if very specific criteria of the
authentication process are fulfilled. This patch essentially copies the
criteria that user space has so far been using to the kernel side so
that the management interface works properly.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 16:14:40 -03:00
Waldemar Rymarkiewicz b6020ba055 Bluetooth: Add definitions for link key types
Introduce the link key types defs and use them instead of magic numbers.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-28 15:02:04 -03:00
John W. Linville 429576b97c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2011-04-26 15:39:10 -04:00
David S. Miller 2bd93d7af1 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Resolved logic conflicts causing a build failure due to
drivers/net/r8169.c changes using a patch from Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-26 12:16:46 -07:00
David S. Miller 1ed3aad141 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2011-04-22 13:21:38 -07:00
Gustavo F. Padovan 828d7d7b19 Merge master.kernel.org:/pub/scm/linux/kernel/git/padovan/bluetooth-2.6
Conflicts:
	net/bluetooth/l2cap_core.c
	net/bluetooth/l2cap_sock.c
	net/bluetooth/mgmt.c
2011-04-20 21:47:07 -03:00
Vinicius Costa Gomes b79f44c16a Bluetooth: Fix keeping the command timer running
In the teardown path the reset command is sent to the controller,
this event causes the command timer to be reactivated.

So the timer is removed in two situations, when the adapter isn't
marked as UP and when we know that some command has been sent.

Reported-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-18 20:11:46 -03:00
John W. Linville 252f4bf400 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
	drivers/net/wireless/ath/ar9170/main.c
	drivers/net/wireless/ath/ar9170/phy.c
	drivers/net/wireless/zd1211rw/zd_rf_rf2959.c
2011-04-12 16:18:44 -04:00
Linus Torvalds 42933bac11 Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
  Fix common misspellings
2011-04-07 11:14:49 -07:00
Gustavo F. Padovan 1e429f3842 Bluetooth: Remove gfp_mask param from hci_reassembly()
It is unnecessary, once we are always in interrupt context.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-04 18:25:14 -03:00
Gustavo F. Padovan 220b881a77 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6 2011-03-31 16:26:01 -03:00
Thomas Gleixner 6f5ef998b7 Bluetooth: Fix warning with hci_cmd_timer
After we made debugobjects working again, we got the following:

WARNING: at lib/debugobjects.c:262 debug_print_object+0x8e/0xb0()
Hardware name: System Product Name
ODEBUG: free active (active state 0) object type: timer_list hint: hci_cmd_timer+0x0/0x60
Pid: 2125, comm: dmsetup Tainted: G        W   2.6.38-06707-gc62b389 #110375
Call Trace:
 [<ffffffff8104700a>] warn_slowpath_common+0x7a/0xb0
 [<ffffffff810470b6>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff812d3a5e>] debug_print_object+0x8e/0xb0
 [<ffffffff81bd8810>] ? hci_cmd_timer+0x0/0x60
 [<ffffffff812d4685>] debug_check_no_obj_freed+0x125/0x230
 [<ffffffff810f1063>] ? check_object+0xb3/0x2b0
 [<ffffffff810f3630>] kfree+0x150/0x190
 [<ffffffff81be4d06>] ? bt_host_release+0x16/0x20
 [<ffffffff81be4d06>] bt_host_release+0x16/0x20
 [<ffffffff813a1907>] device_release+0x27/0xa0
 [<ffffffff812c519c>] kobject_release+0x4c/0xa0
 [<ffffffff812c5150>] ? kobject_release+0x0/0xa0
 [<ffffffff812c61f6>] kref_put+0x36/0x70
 [<ffffffff812c4d37>] kobject_put+0x27/0x60
 [<ffffffff813a21f7>] put_device+0x17/0x20
 [<ffffffff81bda4f9>] hci_free_dev+0x29/0x30
 [<ffffffff81928be6>] vhci_release+0x36/0x70
 [<ffffffff810fb366>] fput+0xd6/0x1f0
 [<ffffffff810f8fe6>] filp_close+0x66/0x90
 [<ffffffff810f90a9>] sys_close+0x99/0xf0
 [<ffffffff81d4c96b>] system_call_fastpath+0x16/0x1b

That timer was introduced with commit 6bd32326cda(Bluetooth: Use
proper timer for hci command timout)

Timer seems to be running when the thing is closed. Removing the timer
unconditionally fixes the problem. And yes, it needs to be fixed
before the HCI_UP check.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:26 -03:00
Gustavo F. Padovan 105721328f Bluetooth: Fix HCI_RESET command synchronization
We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
2011-03-31 14:25:25 -03:00
Szymon Janc 2763eda6cc Bluetooth: Add add/remove_remote_oob_data management commands
This patch adds commands to add and remove remote OOB data to the managment
interface. Remote data is stored in kernel and can be used by corresponding
HCI commands and events when needed.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Gustavo F. Padovan f0681a68dd Bluetooth: remove unnecessary function declaration
hci_notify() doesn't need declaration first.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:53 -03:00
Lucas De Marchi 25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Thomas Gleixner b77dcf8460 Bluetooth: Fix warning with hci_cmd_timer
After we made debugobjects working again, we got the following:

WARNING: at lib/debugobjects.c:262 debug_print_object+0x8e/0xb0()
Hardware name: System Product Name
ODEBUG: free active (active state 0) object type: timer_list hint: hci_cmd_timer+0x0/0x60
Pid: 2125, comm: dmsetup Tainted: G        W   2.6.38-06707-gc62b389 #110375
Call Trace:
 [<ffffffff8104700a>] warn_slowpath_common+0x7a/0xb0
 [<ffffffff810470b6>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff812d3a5e>] debug_print_object+0x8e/0xb0
 [<ffffffff81bd8810>] ? hci_cmd_timer+0x0/0x60
 [<ffffffff812d4685>] debug_check_no_obj_freed+0x125/0x230
 [<ffffffff810f1063>] ? check_object+0xb3/0x2b0
 [<ffffffff810f3630>] kfree+0x150/0x190
 [<ffffffff81be4d06>] ? bt_host_release+0x16/0x20
 [<ffffffff81be4d06>] bt_host_release+0x16/0x20
 [<ffffffff813a1907>] device_release+0x27/0xa0
 [<ffffffff812c519c>] kobject_release+0x4c/0xa0
 [<ffffffff812c5150>] ? kobject_release+0x0/0xa0
 [<ffffffff812c61f6>] kref_put+0x36/0x70
 [<ffffffff812c4d37>] kobject_put+0x27/0x60
 [<ffffffff813a21f7>] put_device+0x17/0x20
 [<ffffffff81bda4f9>] hci_free_dev+0x29/0x30
 [<ffffffff81928be6>] vhci_release+0x36/0x70
 [<ffffffff810fb366>] fput+0xd6/0x1f0
 [<ffffffff810f8fe6>] filp_close+0x66/0x90
 [<ffffffff810f90a9>] sys_close+0x99/0xf0
 [<ffffffff81d4c96b>] system_call_fastpath+0x16/0x1b

That timer was introduced with commit 6bd32326cda(Bluetooth: Use
proper timer for hci command timout)

Timer seems to be running when the thing is closed. Removing the timer
unconditionally fixes the problem. And yes, it needs to be fixed
before the HCI_UP check.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-24 17:04:44 -03:00
Gustavo F. Padovan f630cf0d54 Bluetooth: Fix HCI_RESET command synchronization
We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
2011-03-24 17:04:44 -03:00
Szymon Janc 01df8c31d1 Bluetooth: Fix some code style issues in hci_core.c
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-17 13:31:32 -03:00
Ville Tervo 6bd32326cd Bluetooth: Use proper timer for hci command timout
Use proper timer instead of hci command flow control to timeout
failed hci commands. Otherwise stack ends up sending commands
when flow control is used to block new commands.

2010-09-01 18:29:41.592132 < HCI Command: Remote Name Request (0x01|0x0019) plen 10
    bdaddr 00:16:CF:E1:C7:D7 mode 2 clkoffset 0x0000
2010-09-01 18:29:41.592681 > HCI Event: Command Status (0x0f) plen 4
    Remote Name Request (0x01|0x0019) status 0x00 ncmd 0
2010-09-01 18:29:51.022033 < HCI Command: Remote Name Request Cancel (0x01|0x001a) plen 6
    bdaddr 00:16:CF:E1:C7:D7

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-16 16:33:26 -03:00
Gustavo F. Padovan c6f3c5f7f2 Bluetooth: Fix crash when ioctl(HCIUARTSETPROTO) fails
If the fail happens the HCI del_timer may timeout after the the hci dev
unregister. This lead to a kernel crash.

Reported-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-16 16:33:24 -03:00
Ville Tervo bae1f5d946 Bluetooth: Treat LE and ACL links separately on timeout
Separate LE and ACL timeouts. Othervise ACL connections
on non LE hw will time out after 45 secs.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-16 16:33:15 -03:00
Ville Tervo 6ed58ec520 Bluetooth: Use LE buffers for LE traffic
Bluetooth chips may have separate buffers for LE traffic.
This patch add support to use LE buffers provided by the chip.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-16 16:32:51 -03:00
Andrei Emeltchenko 5a08ecceda Bluetooth: Do not use assignments in IF conditions
Fix checkpatch warnings concerning assignments in if conditions.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:08 -02:00
Johan Hedberg 17fa4b9dff Bluetooth: Add set_io_capability management command
This patch adds a new set_io_capability management command which is used
to set the IO capability for Secure Simple Pairing (SSP) as well as the
Security Manager Protocol (SMP). The value is per hci_dev and each
hci_conn object inherits it upon creation.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:08 -02:00
Johan Hedberg 55ed8ca10f Bluetooth: Implement link key handling for the management interface
This patch adds a management commands to feed the kernel with all stored
link keys as well as remove specific ones or all of them. Once the
load_keys command has been called the kernel takes over link key
replies. A new_key event is also added to inform userspace of newly
created link keys that should be stored permanently.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:07 -02:00
Johan Hedberg d835060036 Bluetooth: Remove page timeout setting from HCI init sequence
User space should set the page timeout so there's no need to explicitly
set it in the HCI init sequence. Even if user space fails to set it the
controller default value will be used.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg b0916ea0d9 Bluetooth: Add controller side link key clearing to hci_init_req
The controller may have link keys in its own memory and these keys could
be used for secure connections. However, since the interface to access
these keys doesn't provide information about the key types (which would
be needed to infer the level of security each key provides) using these
keys is rather useless. Therefore, simply clear the controller side list
in the initialization procedure.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg a5040efa20 Bluetooth: Add special handling with __hci_request and HCI_INIT
To support a more dynamic HCI initialization sequence the __hci_request
behavior requires some more changes. Particularly, the init sequence
should be able to have conditionals in it (sending some HCI commands
depending on the outcome of a previous command) instead of being a fixed
list as it is right now.

The reasons for these additional requirements are the moving all
previously user space driven initialization commands to the kernel side
as well as the support the Low Energy controllers.

To fulfull these requirements the init sequence is made the only special
case for multi-command requests and req_last_cmd is renamed to
init_last_cmd. The hci_send_cmd function is changed to update
init_last_cmd as long as the HCI_INIT flag is set.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:06 -02:00
Johan Hedberg 2aeb9a1ae0 Bluetooth: Implement UUID handling through the management interface
This patch adds methods to the management interface for userspace to
notify the kernel of which services have been registered for specific
adapters. This information is needed for setting the appropriate Class
of Device value as well as the Extended Inquiry Response value. This
patch doesn't actually implement setting of these values but just
provides the storage of the UUIDs so the needed functionality can be
built on top of it.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:05 -02:00
Johan Hedberg c542a06c29 Bluetooth: Implement set_pairable managment command
This patch implements a new set_pairable management command to control
the pairable state of local adapters. The state is represented using a
new HCI_PAIRABLE flag in the hci_dev struct.

For backwards compatibility with older user space versions the
HCI_PAIRABLE flag gets automatically set when the existence of an
adapter is reported to user space through legacy methods and the
HCI_MGMT flag is not set.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:05 -02:00
Johan Hedberg eec8d2bcc8 Bluetooth: Add support for set_powered management command
This patch adds a set_powered command to the management interface
through which the powered state of local adapters can be controlled.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:04 -02:00
Johan Hedberg 5add6af8fc Bluetooth: Add support for management powered event
This patch adds support for the powered event that's used to indicate to
userspace when the powered state of a local adapter changes.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:04 -02:00
Johan Hedberg ab81cbf99c Bluetooth: Implement automatic setup procedure for local adapters
This patch implements automatic initialization of basic information
about newly registered Bluetooth adapters. E.g. the address and features
are always needed so it makes sense for the kernel to automatically
power on adapters and read this information. A new HCI_SETUP flag is
added to track this state.

In order to not consume unnecessary amounts of power if there isn't a
user space available that could switch the adapter back off, a timer is
added to do this automatically as long as no Bluetooth user space seems
to be present. A new HCI_AUTO_OFF flag is added that user space needs to
clear to avoid the automatic power off.

Additionally, the management interface index_added event is moved to the
end of the HCI_SETUP stage so a user space supporting the managment
inteface has all the necessary information available for fetching when
it gets notified of a new adapter. The HCI_DEV_REG event is kept in the
same place as before since existing HCI raw socket based user space
versions depend on seeing the kernels initialization sequence
(hci_init_req) to determine when the adapter is ready for use.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-08 01:40:04 -02:00