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2017-05-18Bluetooth: Set LE Default PHY preferencesMarcel Holtmann1-0/+7
If the LE Set Default PHY command is supported, the indicate to the controller that the host has no preferences for transmitter PHY or receiver PHY selection. Issuing this command gives the controller a clear indication that other PHY can be selected if available. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-05-18Bluetooth: Enable LE Channel Selection Algorithm eventMarcel Holtmann1-0/+1
If the Channel Selection Algorithm #2 feature is supported, then enable the new LE Channel Selection Algorithm event. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-12Bluetooth: L2CAP: Fix L2CAP_CR_SCID_IN_USE valueMarcin Kraglak1-1/+1
Fix issue found during L2CAP qualification test TP/LE/CFC/BV-20-C. Signed-off-by: Marcin Kraglak <marcin.kraglak@tieto.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-04-12Bluetooth: convert rfcomm_dlc.refcnt from atomic_t to refcount_tElena Reshetova1-3/+5
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-03-02sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>Ingo Molnar1-0/+2
We don't actually need the full rculist.h header in sched.h anymore, we will be able to include the smaller rcupdate.h header instead. But first update code that relied on the implicit header inclusion. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-14locking/atomic, kref: Add kref_read()Peter Zijlstra1-2/+2
Since we need to change the implementation, stop exposing internals. Provide kref_read() to read the current reference count; typically used for debug messages. Kills two anti-patterns: atomic_read(&kref->refcount) kref->refcount.counter Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-27Bluetooth: __ variants of u8 and friends are not neccessary inside kernelPavel Machek1-12/+13
bluetooth.h is not part of user API, so __ variants are not neccessary here. Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-11-22Bluetooth: Fix using the correct source address typeJohan Hedberg1-1/+1
The hci_get_route() API is used to look up local HCI devices, however so far it has been incapable of dealing with anything else than the public address of HCI devices. This completely breaks with LE-only HCI devices that do not come with a public address, but use a static random address instead. This patch exteds the hci_get_route() API with a src_type parameter that's used for comparing with the right address of each HCI device. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-09-19Bluetooth: Add support for appearance in scan rspMichał Narajowski2-0/+7
This patch enables prepending appearance value to scan response data. It also adds support for setting appearance value through mgmt command. If currently advertised instance has apperance flag set it is expired immediately. Signed-off-by: Michał Narajowski <michal.narajowski@codecoup.pl> Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-09-19Bluetooth: Increase the subsystem minor version numberMarcel Holtmann1-1/+1
While the subsystem version information are purely informational, increase the minor number due to the addition of user channel and management control monitoring suppport. It is helpful for debugging purposes to see the version numbers change. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: Add framework for Extended Controller InformationMarcel Holtmann2-0/+19
This command is used to retrieve the current state and basic information of a controller. It is typically used right after getting the response to the Read Controller Index List command or an Index Added event (or its extended counterparts). When any of the values in the EIR_Data field changes, the event Extended Controller Information Changed will be used to inform clients about the updated information. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Michał Narajowski <michal.narajowski@codecoup.pl>
2016-09-19Bluetooth: Use numbers for subsystem version stringMarcel Holtmann1-1/+2
Instead of keeping a version string around, use version and revision numbers and then stringify them for use as module parameter. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: Use individual flags for certain management eventsMarcel Holtmann1-1/+4
Instead of hiding everything behind a general managment events flag, introduce indivdual flags that allow fine control over which events are send to a given management channel. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: Add support for sending MGMT commands and events to monitorMarcel Holtmann2-0/+5
This adds support for tracing all management commands and events via the monitor interface. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: Add support for sending MGMT open and close to monitorMarcel Holtmann1-0/+2
This sends new notifications to the monitor support whenever a management channel has been opened or closed. This allows tracing of control channels really easily. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: Introduce helper to pack mgmt version informationMarcel Holtmann1-0/+1
The mgmt version information will be also needed for the control changell tracing feature. This provides a helper to pack them. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: Store control socket cookie and comm informationMarcel Holtmann1-0/+1
To further allow unique identification and tracking of control socket, store cookie and comm information when binding the socket. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-09-19Bluetooth: add printf format attribute to hci_set_[fh]w_info()Nicolas Iooss1-2/+2
Commit 5177a83827cd ("Bluetooth: Add debugfs fields for hardware and firmware info") introduced hci_set_hw_info() and hci_set_fw_info(). These functions use kvasprintf_const() but are not marked with a __printf attribute. Adding such an attribute helps detecting issues related to printf-formatting at build time. Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-09-19Bluetooth: Add HCI device identifier for Qualcomm SMDBjorn Andersson1-0/+1
This patch assigns the next free HCI device identifier to Bluetooth devices based on the Qualcomm Shared Memory channels. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-09-19Bluetooth: Put led_trigger field behind CONFIG_BT_LEDSMarcel Holtmann1-0/+2
The led_trigger field in hci_dev should be conditional based on if CONFIG_BT_LEDS is set or not. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-07-18Bluetooth: Add debugfs fields for hardware and firmware infoMarcel Holtmann1-0/+4
Some Bluetooth controllers allow for reading hardware and firmware related vendor specific infos. If they are available, then they can be exposed via debugfs now. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-07-18Bluetooth: Move hci_recv_frame and hci_recv_diag prototypesMarcel Holtmann1-3/+2
The protoypes for hci_recv_frame and hci_recv_diag are in the wrong location in the header file. Move them close to all the other hci_dev related exported functions. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-07-13Bluetooth: Add Authentication Failed reason to Disconnected Mgmt eventSzymon Janc3-0/+3
If link is disconnected due to Authentication Failure (PIN or Key Missing status) userspace will be notified about this with proper error code. Many LE profiles define "PIN or Key Missing" status as indication of remote lost bond so this allows userspace to take action on this. @ Device Connected: 88:63:DF:88:0E:83 (1) flags 0x0000 02 01 1a 05 03 0a 18 0d 18 0b 09 48 65 61 72 74 ...........Heart 20 52 61 74 65 Rate > HCI Event: Command Status (0x0f) plen 4 LE Read Remote Used Features (0x08|0x0016) ncmd 1 Status: Success (0x00) > ACL Data RX: Handle 3585 flags 0x02 dlen 11 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0001-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: LE Meta Event (0x3e) plen 12 LE Read Remote Used Features (0x04) Status: Success (0x00) Handle: 3585 Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 LE Encryption < HCI Command: LE Start Encryption (0x08|0x0019) plen 28 Handle: 3585 Random number: 0x0000000000000000 Encrypted diversifier: 0x0000 Long term key: 26201cd479a0921b6f949f0b1fa8dc82 > HCI Event: Command Status (0x0f) plen 4 LE Start Encryption (0x08|0x0019) ncmd 1 Status: Success (0x00) > HCI Event: Encryption Change (0x08) plen 4 Status: PIN or Key Missing (0x06) Handle: 3585 Encryption: Disabled (0x00) < HCI Command: Disconnect (0x01|0x0006) plen 3 Handle: 3585 Reason: Authentication Failure (0x05) > HCI Event: Command Status (0x0f) plen 4 Disconnect (0x01|0x0006) ncmd 1 Status: Success (0x00) > HCI Event: Disconnect Complete (0x05) plen 4 Status: Success (0x00) Handle: 3585 Reason: Connection Terminated By Local Host (0x16) @ Device Disconnected: 88:63:DF:88:0E:83 (1) reason 4 @ Device Connected: C4:43:8F:A3:4D:83 (0) flags 0x0000 08 09 4e 65 78 75 73 20 35 ..Nexus 5 > HCI Event: Command Status (0x0f) plen 4 Authentication Requested (0x01|0x0011) ncmd 1 Status: Success (0x00) > HCI Event: Link Key Request (0x17) plen 6 Address: C4:43:8F:A3:4D:83 (LG Electronics) < HCI Command: Link Key Request Reply (0x01|0x000b) plen 22 Address: C4:43:8F:A3:4D:83 (LG Electronics) Link key: 080812e4aa97a863d11826f71f65a933 > HCI Event: Command Complete (0x0e) plen 10 Link Key Request Reply (0x01|0x000b) ncmd 1 Status: Success (0x00) Address: C4:43:8F:A3:4D:83 (LG Electronics) > HCI Event: Auth Complete (0x06) plen 3 Status: PIN or Key Missing (0x06) Handle: 75 @ Authentication Failed: C4:43:8F:A3:4D:83 (0) status 0x05 < HCI Command: Disconnect (0x01|0x0006) plen 3 Handle: 75 Reason: Remote User Terminated Connection (0x13) > HCI Event: Command Status (0x0f) plen 4 Disconnect (0x01|0x0006) ncmd 1 Status: Success (0x00) > HCI Event: Disconnect Complete (0x05) plen 4 Status: Success (0x00) Handle: 75 Reason: Connection Terminated By Local Host (0x16) @ Device Disconnected: C4:43:8F:A3:4D:83 (0) reason 4 Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-07-09Bluetooth: Rename HCI_BREDR into HCI_PRIMARYMarcel Holtmann1-1/+1
The HCI_BREDR naming is confusing since it actually stands for Primary Bluetooth Controller. Which is a term that has been used in the latest standard. However from a legacy point of view there only really have been Basic Rate (BR) and Enhanced Data Rate (EDR). Recent versions of Bluetooth introduced Low Energy (LE) and made this terminology a little bit confused since Dual Mode Controllers include BR/EDR and LE. To simplify this the name HCI_PRIMARY stands for the Primary Controller which can be a single mode or dual mode controller. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-04-22Bluetooth: Add defines for SPI and I2CJohan Hedberg1-0/+2
Extend the set of possible HCI bus types with SPI and I2C. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-03-10Bluetooth: Add support for limited privacy modeJohan Hedberg1-0/+1
Introduce a limited privacy mode indicated by value 0x02 to the mgmt Set Privacy command. With value 0x02 the kernel will use privacy mode with a resolvable private address. In case the controller is bondable and discoverable the identity address will be used. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-02-23Bluetooth: add LED trigger for indicating HCI is powered upHeiner Kallweit1-0/+3
Add support for LED triggers to the Bluetooth subsystem and add kernel config symbol BT_LEDS for it. For now one trigger for indicating "HCI is powered up" is supported. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-01-29Bluetooth: L2CAP: Introduce proper defines for PSM rangesJohan Hedberg1-0/+6
Having proper defines makes the code a bit readable, it also avoids duplicating hard-coded values since these are also needed when auto-allocating PSM values (in a subsequent patch). Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-01-05Bluetooth: Add support for Start Limited Discovery commandJohan Hedberg2-0/+3
This patch implements the mgmt Start Limited Discovery command. Most of existing Start Discovery code is reused since the only difference is the presence of a 'limited' flag as part of the discovery state. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-01-05Bluetooth: Change eir_has_data_type() to more generic eir_get_data()Johan Hedberg1-10/+20
To make the EIR parsing helper more general purpose, make it return the found data and its length rather than just saying whether the data was present or not. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Remove unnecessary HCI_ADVERTISING_INSTANCE flagJohan Hedberg1-1/+0
This flag just tells us whether hdev->adv_instances is empty or not. We can equally well use the list_empty() function to get this information. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Perform HCI update for power on synchronouslyJohan Hedberg1-1/+2
The request to update HCI during power on is always coming either from hdev->req_workqueue or through an ioctl, so it's safe to use hci_req_sync for it. This way we also eliminate potential races with incoming mgmt commands or other actions while powering on. Part of this refactoring is the splitting of mgmt_powered() into mgmt_power_on() and __mgmt_power_off() functions. The main reason is the different requirements as far as hdev locking is concerned, as highlighted with the __ prefix of the power off API. Since the power on in the case of clearing the AUTO_OFF flag cannot be done synchronously in the set_powered mgmt handler, the hci_power_on work callback is extended to cover this (which also simplifies the set_powered helper a lot). Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Move discoverable timeout behind hdev->req_workqueueJohan Hedberg1-1/+0
Since the other discoverable changes are behind req_workqueue now it only makes sense to move the discoverable timeout there as well. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Move discoverable changes to hdev->req_workqueueJohan Hedberg1-0/+2
The discoverable mode is intrinsically linked with the connectable mode e.g. through sharing the same HCI command (Write Scan Enable) for BR/EDR. It makes therefore sense to move it to hci_request.c and run the changes through the same hdev->req_workqueue. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Move connectable changes to hdev->req_workqueueJohan Hedberg1-0/+2
This way the connectable changes are synchronized against each other, which helps avoid potential races. The connectable mode is also linked together with LE advertising which makes is more convenient to have it behind the same workqueue. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Move advertising instance management to hci_request.cJohan Hedberg1-3/+6
This paves the way for eventually performing advertising changes through the hdev->req_workqueue. Some new APIs need to be exposed from mgmt.c to hci_request.c and vice-versa, but many of them will go away once hdev->req_workqueue gets used. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-12-10Bluetooth: Run page scan updates through hdev->req_workqueueJohan Hedberg1-0/+1
Since Add/Remove Device perform the page scan updates independently from the HCI command completion we've introduced a potential race when multiple mgmt commands are queued. Doing the page scan updates through the req_workqueue ensures that the state changes are performed in a race-free manner. At the same time, to make the request helper more widely usable, extend it to also cover Inquiry Scan changes since those are behind the same HCI command. This is also reflected in the new name of the API as well as the work struct name. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-22Bluetooth: Add support for Get Advertising Size Information commandMarcel Holtmann1-0/+13
The Get Advertising Size Information command allows to retrieve size information for advertising data and scan response data fields depending on the selected flags. This is useful if applications want to know the available size ahead of time. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-11-19Bluetooth: Fix specifying role for LE connectionsJohan Hedberg1-1/+1
The hci_connect_le_scan() is (as the name implies) a master/central role API, so it makes no sense in passing a role parameter to it. At the same time this patch also fixes the direct advertising support for LE L2CAP sockets where we now call the more appropriate hci_le_connect() API if slave/peripheral role is desired. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Move Stop Discovery to req_workqueueJohan Hedberg1-0/+1
Since discovery also deals with LE scanning it makes sense to move it behind the same req_workqueue as other LE scanning changes. This also simplifies the logic since we do many of the actions in a synchronous manner. Part of this refactoring is moving hci_req_stop_discovery() to hci_request.c. At the same time the function receives support for properly handling the STOPPING state since that's the state we'll be in when stopping through the req_workqueue. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Move Start Discovery to req_workqueueJohan Hedberg1-0/+2
Since discovery also deals with LE scanning it makes sense to move it behind the same req_workqueue as other LE scanning changes. This also simplifies the logic since we do many of the actions in a synchronous manner. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Move LE scan disable/restart behind req_workqueueJohan Hedberg1-3/+2
To avoid any risks of races, place also these LE scan modification work callbacks behind the same work queue as the other LE scan changes. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Add HCI status return parameter to hci_req_sync()Johan Hedberg1-1/+2
In some cases it may be important to get the exact HCI status rather than the converted HCI-to-errno value. Add an optional return parameter to the hci_req_sync() API to allow for this. Since there are no good HCI translation candidates for cancelation and timeout, use the "unknown" status code for those cases. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Run all background scan updates through req_workqueueJohan Hedberg1-0/+2
Instead of firing off a simple async request queue all background scan updates through req_workqueue and use hci_req_sync() there to ensure that no two updates overlap with each other. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Remove unnecessary call to hci_update_background_scanJohan Hedberg1-1/+0
The hci_conn_params_clear_all() function is only called from hci_unregister_dev() at which point it's completely futile to try to do any LE scanning updates. Simply remove this unnecessary function call. At the same time we can make the function static since it's only accessed from within the same c-file. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Add support for controller specific loggingMarcel Holtmann2-0/+2
To enable controller specific logging, the userspace daemon has to have the ability to log per controller. To facilitate this support, provide a dedicated logging channel. Messages in this channel will be included in the monitor queue and with that also forwarded to monitoring tools along with the actual hardware traces. All messages from the logging channel are timestamped and with that allow an easy correlation between userspace messages and hardware events. This will increase the ability to debug problems faster. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-11-19Bluetooth: Add support for sending system notes to monitor channelMarcel Holtmann2-0/+3
The monitor channel can be used to send generic system notes as text strings for debugging purposes. This adds the system note monitor code and uses it for including kernel and subsystem version into traces. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-11-19Bluetooth: Compress the size of struct hci_ctrlJohan Hedberg1-3/+8
We can reduce the size of the hci_ctrl struct by converting 'bool req_start' to 'u8 req_flags' and making the two function pointers a union (since only one is ever set at a time). Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Remove redundant setting to zero of bt_cbJohan Hedberg1-6/+2
The socket allocation functions will always memset skb->cb to zero so there's no need to make other initializations needing the same thing. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-11-19Bluetooth: Add hci_skb_* helper wrappers for bt_cb(skb) accessMarcel Holtmann1-0/+4
For all the HCI driver related variables accesssed via bt_cb(skb), provide helper wrappers. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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