Commit graph

125 commits

Author SHA1 Message Date
Szymon Janc
861bae22b8 Bluetooth: Fix autoconnect if cancelled pending connection
bt_conn_disconnect removes device from autoconnect list and thus
should not be called from le_conn_update when timeouting pending
connection. Also auto connect flag needs to be check on connection
failure to make sure scan is restarted.

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2018-10-05 13:43:49 +02:00
Szymon Janc
f0f4147a57 Bluetooth: Allow to configure LE Create Connection timeout
Depending on perhiperal advertising interval 3 seconds might not be
enough and would result in cancelling pending connection. Make this
Kconfig configurable and let application to decide.

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2018-09-28 13:42:26 +03:00
Szymon Janc
bb271a6d98 Bluetooth: Add option to configure peripheral connection parameters
This allows to configure desired parameters for peripheral. When set
PPCP characteristic is also added to GAP service. If disabled it is
up to application to controll connection parameters and stack will
only enforce 5 seconds delay before update.

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2018-09-25 13:31:10 +03:00
Szymon Janc
75405f5613 Bluetooth: Fix connection parameters update
This fixes a few issues with the handling of Connection Parameter
update in the Host:
 - starting conn param update timer as master
 - ignoring 5 seconds slave timer when calling bt_conn_le_param_update
 - starting conn param update timer on every PHY update

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2018-09-25 13:31:10 +03:00
Flavio Ceolin
da49f2e440 coccicnelle: Ignore return of memset
The return of memset is never checked. This patch explicitly ignore
the return to avoid MISRA-C violations.

The only directory excluded directory was ext/* since it contains
only imported code.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
2018-09-14 16:55:37 -04:00
Kamil Piszczek
9af28ddc09 Bluetooth: host: directed advertising support
Added implementation to the directed advertising API in the Connection
Management module. Introduced a new connection state for this type of
advertising. The new state is symmetric to the connection state used for
scanning.

Added a new advertising option that can be used to trigger low and high
duty directed advertising. Added macros for default values of
Advertising Parameters, which are used to trigger directed advertising.

Signed-off-by: Kamil Piszczek <Kamil.Piszczek@nordicsemi.no>
2018-09-13 14:21:21 +02:00
Olivier Martin
c3118e66ee subsys: bluetooth: host: Ensure PDUs are not allocated in ISR
`bt_conn_create_pdu()` must not be called in ISR has the call
might be blocking.

Signed-off-by: Olivier Martin <olivier.martin@proglove.de>
2018-08-27 12:52:11 -04:00
Johan Hedberg
cbb1b84f91 Bluetooth: Pass identity to connection and pairing clearing functions
When doing bt_unpair() we need to pass the given identity when
disconnecting and clearing keys, in case all associated pairings were
requested to be cleared.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-08-13 19:53:22 +03:00
Johan Hedberg
5708f1e8b1 Bluetooth: Add infrastructure to handle multiple identities
Make it possible to have multiple identity addresses as an LE
peripheral. For central role only the default identity is supported
for now. This also extends the flash storage in a backward compatible
way.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-08-13 19:53:22 +03:00
Johan Hedberg
c446c8267b Bluetooth: Add support for fixed passkeys
Add a new bt_passkey_set() API that can be used to set a fixed passkey
to be used for pairing. The new API also requires a new Kconfig option
to be enabled first (CONFIG_BT_FIXED_PASSKEY).

Fixes #8350

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-08-01 16:13:21 +03:00
Johan Hedberg
4752788c81 Bluetooth: Fix documentation and other issues with auth callbacks
Provide proper documentation for all of the authentication callbacks,
and clarify the usage of the cancel callback. Previously the cancel
callback was always required, even though that doesn't necessarily
make sense now that the pairing_complete/failed callbacks exist.

Fixes #8385

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-08-01 16:13:21 +03:00
Mariusz Skamra
76d0dd41f9 Bluetooth: hci_core: Exclude scan related code if non-observer
This chunks should be excluded from build if the target application
does not support neither observer not central role.
This helps to reduce the application image size that implement
Peripheral or Broadcaster role.

Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>
2018-06-27 12:50:24 +03:00
Vinayak Kariappa Chettimada
b35ed7e79c Bluetooth: Fix central from failing to start encryption
This fixes a regression introduced in commit 6af5d1cd1f
("Bluetooth: Compress bt_keys struct").

Instead of passing a value zero as the random number, the
value at the RAM address zero was being used by the start
encryption function call. It is now fixed by consistently
using byte-array to store EDiv and Rand values.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
2018-06-22 18:03:43 +02:00
Johan Hedberg
6af5d1cd1f Bluetooth: Compress bt_keys struct
There's a bit of unnecessary space in the bt_keys struct. Re-design
some fields for a more compact format, which is particularly helpful
now that the struct gets stored as-is to flash through the settings
API.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-05-04 17:26:05 -04:00
Johan Hedberg
abc20e7eae Bluetooth: Introduce dedicated TX fragment pool
There's a risk of a deadlock if we use the same pool for ACL fragments
as we use for general ACL TX buffers: all TX buffers are queued up,
and we try to segment one of them, a segment buffer will never become
available. To work around this risk, introduce a dedicated fragment
pool.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-02-13 14:49:52 +02:00
Johan Hedberg
5ded8d8d49 Bluetooth: Remove useless BT_L2CAP_TX_USER_DATA_SIZE Kconfig variable
No one was setting this to any other value than its default, which
happens to be the same as BT_BUF_USER_DATA_MIN.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-02-12 09:48:32 +02:00
Johan Hedberg
d5f27b70cc Bluetooth: Remove bogus return statements for BR/EDR connections
Having these in the beginning of a switch statement without any case
statement makes no sense.

Fixes #6135

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-02-11 18:29:57 +02:00
Johan Hedberg
dd09cbc1c4 net: buf: Redesigned API with split data and meta-data
Redesign of the net_buf_simple and net_buf structs, where the data
payload portion is split to a separately allocated chunk of memory. In
practice this means that buf->__buf becomes a pointer from having just
been a marker (empty array) for where the payload begins right after
the meta-data.

Fixes #3283

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-02-10 09:20:42 +02:00
Johan Hedberg
ee217d4051 Bluetooth: Fix freeing up conn->tx_notify upon disconnect
It's possible that tx_notify still contains items when a Disconnect
Complete happens. Since the normal path for processing tx_notify is
not taken when the connection is not in CONNECTED state, we must make
sure to process the list latest in conn_cleanup() that's called as one
last thing before the connection object is freed up.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-10-13 17:23:46 -07:00
Johan Hedberg
c136a2eb83 Bluetooth: Fix reporting packets for disconnected connections
A connection might have gotten disconnected by the time that an ACL
buffer is free up, in which case there is no need to send a HCI
command for it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-10-12 22:02:14 -05:00
Luiz Augusto von Dentz
7d01c5ecb7 poll: Enable multiple threads to use k_poll in the same object
This is necessary in order for k_queue_get to work properly since that
is used with buffer pools which might be used by multiple threads asking
for buffers.

Jira: ZEP-2553

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-08-25 09:00:46 -04:00
Johan Hedberg
2975ca0754 Bluetooth: Kconfig: Rename CONFIG_BLUETOOTH_* to CONFIG_BT_*
The API name space for Bluetooth is bt_* and BT_* so it makes sense to
align the Kconfig name space with this. The additional benefit is that
this also makes the names shorter. It is also in line with what Linux
uses for Bluetooth Kconfig entries.

Some Bluetooth-related Networking Kconfig defines are renamed as well
in order to be consistent, such as NET_L2_BLUETOOTH.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-08-09 11:14:19 +03:00
Johan Hedberg
58d87ff530 Bluetooth: conn: Fix notifying all pending tx packets in send_frag()
The code in send_frag() depends on being able to allocate a new
pending tx contexts with 100% certainty. We must therefore notify
*all* connections instead of the current one in order to ensure that
there are free contexts available in free_tx.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-07-06 20:46:25 +03:00
Johan Hedberg
baf4f0c912 Bluetooth: conn: Switch order of tx_notify & tx_queue
In case both conn->tx_notify and conn->tx_queue have data in them we
should first process the notify queue and only then new outgoing
packets.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-07-06 14:58:35 +03:00
Johan Hedberg
9b1653061a Bluetooth: conn: Add pending tx before calling bt_send()
It's possible that the controller will emit the number of completed
packets event before bt_send() returns, or possibly preempt
send_frag() before it manages to call add_pending_tx(). We have to
therefore add the pending TX entry before calling bt_send().

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-06-23 18:02:08 +03:00
Johan Hedberg
9703927f84 net: buf: Move net_buf_pool objects to dedicated linker area
Moving the net_buf_pool objects to a dedicated area lets us access
them by array offset into this area instead of directly by pointer.
This helps reduce the size of net_buf objects by 4 bytes.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-06-16 17:05:06 +03:00
Carles Cufi
6c9e563c92 Bluetooth: Move common code to common/
Since more and more code is going to be reused by both the Host and the
Controller, this commit introduces a common/ folder that will contain
everything that is not tied to one of the two components but shared by
them.

Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2017-05-12 12:56:14 +03:00
Vinayak Kariappa Chettimada
2a40bf6a87 Bluetooth: Add LE Features test macro
Added HCI macros to check LE Features. Also, added test
macros for 2M and Coded PHY support in HCI Controller.

Earlier a common test macro was used between BR/EDR and LE,
but since LE features do not use pages for feature, an
explicit macro for testing LE feature is added now.

Also, features field in LE device structure is now a single
dimension array of 8 octets.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
2017-05-10 07:30:16 +03:00
Johan Hedberg
890bf82aff Bluetooth: conn: Remove shadow iterator variable
This function already has an 'i' variable on the top-level, so no need
to declare a second one that'd just shadow the original.

Change-Id: I5dfa4df2c4793be220a40ac642b19bf440e80220
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-29 11:39:13 -04:00
Johan Hedberg
d1bb961bcf Bluetooth: Remove unnecessary bt_dev_esco struct
This information should be part of the main BR/EDR context struct,
rather than there being a separate member in struct bt_dev. If/when
the needed ESCO information grows we can consider having a separate
struct, but even then it should be part of the main BR/EDR struct
instead of sitting directly in bt_dev.

Change-Id: I3edf120606ea6c6974f515bba90de2b25fc6fac6
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-29 11:39:13 -04:00
Kumar Gala
d0eb235510 Bluetooth: convert to using newly introduced integer sized types
Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types.

Jira: ZEP-2051

Change-Id: I8f57a17f78e674aca5400f005db8975c9f9e150e
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-04-20 13:25:23 -05:00
Johan Hedberg
4be4c60ab6 Bluetooth: Add support for tracking transmitted packets
Protocols/profiles may want to know when exactly their PDU has been
transmitted over the air. To make this possible, introduce support for
a callback that will get called when the controller reports that a
packet has been transmitted (through the Number of Completed Packets
HCI event).

Change-Id: Ia3a19b93c5b2111f144bfabe5861187c41525f30
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-20 09:59:33 +00:00
Johan Hedberg
17efbba7b4 Bluetooth: conn: Set initial responder address when connecting
If the connection process fails the user may still need to do
bt_conn_get_info() in its connected callback, so this needs to give a
meaningful value for the remote address. Start off with the one that
was given to bt_conn_create_le().

Jira: ZEP-2005

Change-Id: I4e9a033dec7c55fa549f5b6746c3bd81c0ccade5
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-10 09:09:26 +00:00
Johan Hedberg
71d0843c7d Bluetooth: conn: Pass disconnect error properly to the conn struct
The bt_conn_set_state() function will not notify the connected
callback of the connection error if conn->err isn't properly set.

Jira: ZEP-2005

Change-Id: Idc30e736f4d8ba00156bf5c0e37dcccdb151742f
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-10 08:20:53 +00:00
Johan Hedberg
757fd755a6 Bluetooth: Remove unnecessary controller-side buffers tracking
When there's no support for connections there's also no need to track
the controller side buffers.

Change-Id: I7eac3af486f139f1ab32efda8ccfa188ed8359eb
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Luiz Augusto von Dentz
41a55893f7 Bluetooth: L2CAP: Use sys_slist_t for connection channels
This avoid having duplicated code for list manipulation in both LE and
BR channels.

Change-Id: I734635e8e51d4b826a3d45cda8551e1e509bd913
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-03-23 14:52:52 +02:00
Vinayak Chettimada
bd80affa3f Bluetooth: Support connection parameter update as central
bt_conn_le_param_update returns -EBUSY when used in central
role if peer did not support LE connection parameter
request.

This commit allows a central role to use either LE
connection parameter request, if local controller supports
it, else use LE connection update.

Jira: ZEP-1773

Change-id: I72b9c77440459672fd50216a74ffcbd59c5f38f6
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-03-21 17:05:42 -07:00
Vinayak Chettimada
f2f50d8bff Bluetooth: Fix checks for changes in connection parameters
Added checks for latency and timeout changes requested in
bt_conn_le_param_update, to decide if connection parameter
update is needed.

Change-id: I9de9f566158c5ade808ed356cb90b27186aa0243
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-03-21 17:05:42 -07:00
Sathish Narasimman
d33ea09968 Bluetooth: HFP HF: SCO Initiate Audio connection
This patch adds support to initiate audio connection from the stack.

< HCI Command: Setup Synchronous... (0x01|0x0028) plen 17  [hci0]
        Handle: 256
        Transmit bandwidth: 8000
        Receive bandwidth: 8000
        Max latency: 7
        Setting: 0x0060
          Input Coding: Linear
          Input Data Format: 2's complement
          Input Sample Size: 16-bit
          # of bits padding at MSB: 0
          Air Coding Format: CVSD
        Retransmission effort: Optimize for power consumption (0x01)
        Packet type: 0x003e
          HV2 may be used
          HV3 may be used
          EV3 may be used
          EV4 may be used
          EV5 may be used

Change-Id: I4f4c0788760c9bdaf75651825511ff6bcd06df59
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-03-21 17:05:42 -07:00
Sathish Narasimman
dcf9a97b18 Bluetooth: HFP HF: SCO: Handle SCO Disconnect
This patch handles the SCO disconnection part also unref the connected
corresponding ACL conn.

Change-Id: Ic2de68560cfd7d847e6011578c4424e24800d2ac
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-03-21 17:05:42 -07:00
Sathish Narasimman
e0363fd45b Bluetooth: SCO: Rename 'conn' to 'acl'
This patch renames the 'conn' variable to 'acl' which is reference
to ACL connection for SCO connection.

Change-Id: I5f0a60bc5d80de08fa5b963cf545c71552909401
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-03-21 17:05:42 -07:00
Sathish Narasimman
befc6510f1 Bluetooth: HFP HF: SCO: Handle synchronous_conn_complete
Handle the synchronous connection complete event received from the
controller and update the event details received.

> HCI Event: Synchronous Connect Complete (0x2c) plen 17
        Status: Success (0x00)
        Handle: 266
        Address: 48:9D:24:1F:4D:1D (BlackBerry RTS)
        Link type: eSCO (0x02)
        Transmission interval: 0x06
        Retransmission window: 0x02
        RX packet length: 30
        TX packet length: 30
        Air mode: CVSD (0x02)

Change-Id: I4bcd0488f798b112af504245e80180a70b32a882
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-03-21 17:05:42 -07:00
Sathish Narasimman
e51a19fdc2 Bluetooth: HFP HF: SCO: Accept eSCO conn request
1. Accept the incoming Synchronous connection request and establish
a new sco connection object.
2. Enable sco conn complete in event_mask

> HCI Event: Connect Request (0x04) plen 10           [hci0] 126.198264
        Address: 48:9D:24:1F:4D:1D (BlackBerry RTS)
        Class: 0x7a020c
          Major class: Phone (cellular, cordless, payphone, modem)
          Minor class: Smart phone
          Networking (LAN, Ad hoc)
          Capturing (Scanner, Microphone)
          Object Transfer (v-Inbox, v-Folder)
          Audio (Speaker, Microphone, Headset)
          Telephony (Cordless telephony, Modem, Headset)
        Link type: eSCO (0x02)
< HCI Command: Accept Synchronous Co.. (0x01|0x0029) plen 21
        Address: 48:9D:24:1F:4D:1D (BlackBerry RTS)
        Transmit bandwidth: 8000
        Receive bandwidth: 8000
        Max latency: 7
        Setting: 0x0060
          Input Coding: Linear
          Input Data Format: 2's complement
          Input Sample Size: 16-bit
          # of bits padding at MSB: 0
          Air Coding Format: CVSD
        Retransmission effort: Optimize for power consumption (0x01)
        Packet type: 0x0006
          HV2 may be used
          HV3 may be used
> HCI Event: Command Status (0x0f) plen 4           [hci0] 126.205171
      Accept Synchronous Connection Request (0x01|0x0029) ncmd 1
        Status: Success (0x00)

Change-Id: I71597aef94e945a9c07be1960994ad20c1b44bb3
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-03-08 15:35:28 +00:00
Szymon Janc
da9f9cc3f7 Bluetooth: Fix connection object leak
When canceling outgoing connection initial reference was not dropped.

btshell> connect 11:22:33:44:55:66 public
[bt] [DBG] bt_conn_set_state: (0x0011a1ac) disconnected -> connect-scan
[bt] [DBG] bt_conn_ref: (0x0011a1ac) handle 0 ref 2
[bt] [DBG] bt_conn_ref: (0x0011a1ac) handle 0 ref 3
[bt] [DBG] bt_conn_unref: (0x0011a1ac) handle 0 ref 2
[bt] [DBG] bt_conn_prepare_events: (0x0011b3a0)
[bt] [DBG] bt_conn_prepare_events: (0x0011b3a0)
[bt] [DBG] bt_conn_prepare_events: (0x0011b3a0)
Connection pending
[bt] [DBG] bt_conn_unref: (0x0011a1ac) handle 0 ref 1
btshell>
btshell> disconnect 11:22:33:44:55:66 public
[bt] [DBG] bt_conn_ref: (0x0011a1ac) handle 0 ref 2
[bt] [DBG] bt_conn_ref: (0x0011a1ac) handle 0 ref 3
[bt] [DBG] bt_conn_unref: (0x0011a1ac) handle 0 ref 2
[bt] [DBG] bt_conn_set_state: (0x0011a1ac) connect-scan -> disconnected
[bt] [DBG] bt_conn_prepare_events: (0x0011b3a0)
[bt] [DBG] bt_conn_unref: (0x0011a1ac) handle 0 ref 1
btshell>
btshell> connect 11:22:33:44:55:66 public
[bt] [DBG] bt_conn_ref: (0x0011a1ac) handle 0 ref 2
[bt] [DBG] bt_conn_unref: (0x0011a1ac) handle 0 ref 1
Connection failed
btshell>

Change-Id: I0c38bbed8d1712d07a579275355e7dcd8d6b0b38
Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2017-03-07 12:21:29 +01:00
Johan Hedberg
6c995a5053 Bluetooth: Fix missing connection cleanup in some scenarios
If the TX thread is not in k_poll() when conn->state gets set to
DISCONNECTED and a dummy buffer is pushed to conn->tx_queue the
bt_conn_prepare_events() function would have failed to add the
connection to the poll list for cleanup. To ensure the cleanup always
happens introduce a new flag that indicates that a cleanup must
happen. The extra benefit of the flag is that we no-longer need a
dummy buffer, but can simply use the conn_change signal to wake up the
TX thread.

Change-Id: I369584d305261ab3666b931c786daff9d131d228
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-02-10 10:09:10 +02:00
Szymon Janc
fb3317b7a1 Bluetooth: Fix not clearing signaled flag for conn_change signal
From k_poll_signal_init() documentation:
The poll signal contains a 'signaled' field that, when set by
k_poll_signal(), stays set until the user sets it back to 0. It thus
has to be reset by the user before being passed again to k_poll() or
k_poll() will consider it being signaled, and will return immediately.

Change-Id: I55daac92dd6293ac653fd7fa0f907b0b7fd99d65
Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2017-02-10 06:18:05 +00:00
Szymon Janc
295e8e575c Bluetooth: Use assert when getting net buf with K_FOREVER
net_buf_alloc called with K_FOREVER should always return valid pointer.
Returning NULL indicated kernel bug.

Change-Id: I6c317de2d98723d0c1a0618e91490a2128f69f06
Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
2017-02-07 12:29:01 +00:00
Johan Hedberg
dc70415dc4 Bluetooth: Merge HCI command and connection TX threads
We can go further with taking advantage of k_poll and merge the
connection TX thread together with the HCI command thread, thereby
saving even more memory.

Change-Id: I1792056fd4621d62c7cd05929094033acca45c74
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-02-05 22:39:25 +02:00
Johan Hedberg
1fb0351f9a Bluetooth: Merge bt_conn TX threads into a single one with k_poll
Now that the k_poll API is available we can use it to have single
connection TX thread instead of multiple ones, which helps reduce the
per-connection memory overhead by a substantial amount.

Change-Id: Icb5d4da87cf0d660bba8da43186d1e76f41c825a
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-02-05 22:39:25 +02:00
Johan Hedberg
192db7179c Bluetooth: conn: Use delayed work for LE connection timeout
Detaching the timeout from the tx_thread lets us prepare for merging
all TX threads into a single one with the help of k_poll(). There's no
need to define a new delayed work object since the existing connection
parameter update object and connection timeout will never need to run
in parallel. Additionally, but some CONFIG_BLUETOOTH_CENTRAL guards to
void pulling in unnecessary code when Central role is not enabled.

Change-Id: Ia1f222aa052edcecd484a924f2d9a63a3b8fd11f
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-02-05 22:39:25 +02:00