The exception for certain PSM channels when it comes to security
mode 4 level 0 should only be checked when actually a connection
oriented channel is established.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 11 Oct 2013 23:42:07 +0000 (16:42 -0700)]
Bluetooth: Fix HCI init for 1st generation BlueFRITZ! devices
The 1st generation of BlueFRITZ! devices from AVM Berlin pretend
to be HCI version 1.2 controllers, but they are not. They are simple
Bluetooth 1.1 devices.
Since this company never created any newer controllers, it is safe
to use the manufacturer ID instead of an USB quirk.
Marcel Holtmann [Fri, 11 Oct 2013 21:44:58 +0000 (14:44 -0700)]
Bluetooth: Add MGMT_OP_SET_SCAN_PARAMS to supported commands list
When adding support for MGMT_OP_SET_SCAN_PARAMS command the addition
to the supported commands list has been forgotten. This is needed
for userspace to detect if the command is supported or not.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 11 Oct 2013 16:48:47 +0000 (09:48 -0700)]
Bluetooth: Don't advertise high speed support without SSP
It is not allowed to enable high speed support when Secure Simple
Pairing is not available or disabled.
However the support for high speed gets advertised on a controller
that does not even support Secure Simple Pairing. Since there is
no way to enable high speed support on such a controller, do not
even advertise its support.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 11 Oct 2013 16:44:12 +0000 (09:44 -0700)]
Bluetooth: Fix endless loop with HCI_QUIRK_RESET_ON_CLOSE
Really early versions of the Bluetooth specification were unclear
with the behavior of HCI Reset for USB devices. They assumed that
also an USB reset needs to be issued. Later Bluetooth specifications
cleared this out and it is safe to call HCI Reset without affecting
the transport.
For old devices that misbehave, the HCI_QUIRK_RESET_ON_CLOSE quirk
was introduced to postpone the HCI Reset until the device was no
longer in use.
One of these devices is the Digianswer BPA-105 Bluetooth Protocol
Analyzer. The only problem now is that with the quirk set, the
HCI Reset is also executed at the end of the setup phase. So the
controller gets configured and then it disconnects from the USB
bus, connects again, gets configured and of course disconnects
again. This game goes on forever.
For devices that need HCI_QUIRK_RESET_ON_CLOSE it is important
that the HCI Reset is not executed after the setup phase. In
specific when HCI_AUTO_OFF is set, do not call HCI Reset when
closing the device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 11 Oct 2013 15:23:20 +0000 (08:23 -0700)]
Bluetooth: Add management command for setting LE scan parameters
The scan interval and window parameters are used for LE passive
background scanning and connection establishment. This allows
userspace to change the values.
These two values should be kept in sync with whatever is used for
the scan parameters service on remote devices. And it puts the
controlling daemon (for example bluetoothd) in charge of setting
the values.
Main use case would be to switch between two sets of values. One
for foreground applications and one for background applications.
At this moment, the values are only used for manual connection
establishment, but soon that should be extended to background
scanning and automatic connection establishment.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 11 Oct 2013 15:23:19 +0000 (08:23 -0700)]
Bluetooth: Make LE scan interval and window a controller option
The scan interval and window for LE passive scanning and connection
establishment should be configurable on a per controller basis. So
introduce a setting that later on will allow modifying it.
This setting does not affect LE active scanning during device
discovery phase. As long as that phase uses interleaved discovery,
it will continuously scan.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 11 Oct 2013 13:19:18 +0000 (06:19 -0700)]
Bluetooth: Add hdev parameter to hdev->send driver callback
Instead of masking hdev inside the skb->dev parameter, hand it
directly to the driver as a parameter to hdev->send. This makes
the driver interface more clear and simpler.
This patch fixes all drivers to accept and handle the new parameter
of hdev->send callback. Special care has been taken for bpa10x
and btusb drivers that require having skb->dev set to hdev for
the URB transmit complete handlers.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 21:54:19 +0000 (14:54 -0700)]
Bluetooth: Remove return value from hci_send_frame() function
The return value of hci_send_frame() is never checked. So just make
this function void and print an error when the hdev->send driver
callback returns a negative value.
Having the error printed is actually an improvement over the
current situation where any driver error just gets ignored.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 21:54:18 +0000 (14:54 -0700)]
Bluetooth: Remove pointless check of hci_send_frame parameter
The hdev parameter of hci_send_frame must be always valid. If the hdev
is not valid, it would not even make it to this stage. The callers
will have already accessed hdev at that point many times.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 21:54:17 +0000 (14:54 -0700)]
Bluetooth: Move skb->dev assignment for hdev->send into central place
The assignement of skb->dev is done all over the place. So it makes it
hard to eventually get rid of it. Move it all in one central place so
it gets assigned right before calling hdev->send driver callback.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 17:02:08 +0000 (10:02 -0700)]
Bluetooth: AMP contollers do not support the legacy ioctls
The legacy ioctls for device specific commands including inquiry are
not support by AMP controllers. So just reject them right away instead
of trying to send the HCI command and wait for failure from the
actual hardware.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 16:47:55 +0000 (09:47 -0700)]
Bluetooth: Use hci_conn_num() instead of direct connection hash access
When changing the alternate setting for the ISOC endpoints, use the
hci_conn_num() helper function to count currently established SCO
and eSCO connections and store the the value. This avoids direct
access to the connection hash.
In addition use the stored value instead accessing the connection
hash over and over again.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 16:47:54 +0000 (09:47 -0700)]
Bluetooth: Use hci_conn_num() for checking number of LE connections
When checking for the current number of LE connections, use
hci_conn_num() function instead of a full blown lookup within
the connection hash or direct access of the counters.
In the case of re-enabling advertising, it is more useful to
check for any connection attempt or existing connection.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Johan Hedberg [Thu, 10 Oct 2013 16:06:04 +0000 (18:06 +0200)]
Bluetooth: Fix checking for HCI_SETUP flag when receiving mgmt commands
When the HCI_SETUP flag is set the controller has not yet been announced
over mgmt and therefore doesn't exist from that perspective. If we
nevertheless get a mgmt command for it we should respond with the
appropriate INVALID_INDEX error.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Thu, 10 Oct 2013 11:33:37 +0000 (13:33 +0200)]
Bluetooth: Fix potential double-frees of L2CAP skbs
The l2cap_recv_frame function is expected to take ownership and
eventually free the skb passed to it. We need to ensure that the
conn->rx_skb pointer is no longer reachable when calling
l2cap_recv_frame so that no other function, such as l2cap_conn_del, may
think that it can free conn->rx_skb.
An actual situation when this can happen is when smp_sig_channel (called
from l2cap_recv_frame) fails and l2cap_conn_del gets called as a
consequence. The l2cap_conn_del function would then try to free
conn->rx_skb, but as the same skb was just passed to smp_sig_channel and
freed we get a double-free.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Thu, 10 Oct 2013 10:08:11 +0000 (03:08 -0700)]
Bluetooth: Restrict high speed support to SSP enabled controllers
The support for Bluetooth High Speed can only be enabled on controllers
where also Secure Simple Pairing has been enabled. Trying to enable
high speed when SSP is disabled will result into an error. Disabling
SSP will at the same time disable high speed as well.
It is required to enforce this dependency on SSP since high speed
support is only defined for authenticated, unauthenticated and
debug link keys. These link key types require SSP.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Thu, 10 Oct 2013 10:08:10 +0000 (03:08 -0700)]
Bluetooth: Remove unneeded val variable when setting SSP
The variable val in the set_ssp() function of the management interface
is not needed. Just use cp->val directly since its input values have
already been validated.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Andre Guedes [Tue, 8 Oct 2013 11:21:18 +0000 (08:21 -0300)]
Bluetooth: Refactor hci_connect_le
This patch does some code refactoring in hci_connect_le() by moving
the exception code into if statements and letting the main flow in
first level of function scope. It also adds extra comments to improve
the code readability.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Andre Guedes [Tue, 8 Oct 2013 11:21:17 +0000 (08:21 -0300)]
Bluetooth: Use HCI request for LE connection
This patch introduces a new helper, which uses the HCI request
framework, for creating LE connectons. All the handling is now
done by this function so we can remove the hci_cs_le_create_conn()
event handler.
This patch also removes the old hci_le_create_connection() since
it is not used anymore.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Tue, 8 Oct 2013 13:52:18 +0000 (15:52 +0200)]
Bluetooth: Fix changing advertising setting while LE is connected
We only (re)enable advertising when LE is disconnected. Trying to enable
advertising using mgmt_set_advertising while connected should simply
change the flag but not do anything else (until the connection gets
dropped). This patch fixes this by making an LE connection lookup to
determine whether there are any connected devices or not.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Mon, 7 Oct 2013 09:31:39 +0000 (02:31 -0700)]
Bluetooth: Read supported features and commands on AMP controllers
The commands for reading supported features and commands are both
supported by AMP controllers. Issue them during controller init
phase so their values are known.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Mon, 7 Oct 2013 07:58:33 +0000 (00:58 -0700)]
Bluetooth: Make mgmt power down notification for BR/EDR explicit
The management interface only operates on BR/EDR controllers. The check
for the power down notification is a bit intermixed with the check if
controller auto power off is active. Since there are more than just
BR/EDR controllers supported, make this check explicit since the auto
power off check also applies to AMP controllers and it has to happen
in this exact order. Otherwise the bit will not be cleared.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Mon, 7 Oct 2013 07:58:32 +0000 (00:58 -0700)]
Bluetooth: Power off AMP controllers after setup phase
Even AMP controllers should be powered off after the setup phase. It
is not a good idea to keep AMP controllers powered on all the time
if they are not in use.
Power on of the AMP controller can either be done manually via
command line commands or directly via A2MP. Especially since there
is an indication in A2MP for powered down controllers that can
be activated.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Mon, 7 Oct 2013 06:55:45 +0000 (23:55 -0700)]
Bluetooth: Make mgmt_index_added() and mgmt_index_removed() return void
The return value from mgmt_index_added() and mgmt_index_removed()
functions is never used. So do not pretend that returning an error
would actually be handled and just make both functions return void.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 23:11:57 +0000 (16:11 -0700)]
Bluetooth: Send new settings only when pairable changes
In case the current value of pairable is already configured, do not
send a new settings event indicating that something has changed while
in reality everything is the same.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 15:25:01 +0000 (08:25 -0700)]
Bluetooth: Remove mgmt_valid_hdev() helper function
The helper function mgmt_valid_hdev() is more obfuscating the code
then it makes it easier to read. So intead of this helper, use the
direct check for BR/EDR device type.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 11:11:12 +0000 (04:11 -0700)]
Bluetooth: Remove no longer needed mgmt_new_settings() function
The mgmt_new_settings() function was only needed to handle the
error case when re-enabling advertising failed. Since that is
now handled internally inside the management core, this function
is not needed anymore. So just remove it.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 11:08:14 +0000 (04:08 -0700)]
Bluetooth: Use helper function for re-enabling advertising
When the all LE connections have been disconneted, then it is up to
the host to re-enable advertising at that point. To ensure that the
correct advertising parameters are used, force the usage of the
common helper to enable advertising.
The change just moves the manual enabling of advertising from the
event handler into the management core so that the helper can
be actually shared.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 10:17:56 +0000 (03:17 -0700)]
Bluetooth: Set LE advertising parameters before enabling it
The LE advertising parameters can only be modified when advertising
is disabled. So before enabling it, make sure the controller has all
the right parameters.
Right now all default values are used and thus this does no change
any existing behavior. One minor exception is that in case of single
mode LE-only controllers without a public address, now the random
address is used for advertising.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 09:55:21 +0000 (02:55 -0700)]
Bluetooth: Use helper functions for enabling/disabling advertising
The tasks of enabling and disabling advertising are required in many
cases. So refactor the actual HCI operations into two common helpers
to make the code simpler.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 09:40:43 +0000 (02:40 -0700)]
Bluetooth: Make it clear that disabling LE disables advertising
This is not a functional change, just change the code to make it easy
to understand that advertising gets disabled before LE support will
be turned off.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 09:08:36 +0000 (02:08 -0700)]
Bluetooth: Use random address if public address is not available
For single mode LE-only controllers, it is possible that they come
without a public address. If a public address is not available,
then use the random address for connection establishment and
scanning.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 09:08:35 +0000 (02:08 -0700)]
Bluetooth: Simplify device type check for AMP discover response
When counting the number for AMP controllers, a positive check is
used. To be consistent, use the same check when actually adding
the data for the AMP contollers.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 08:16:22 +0000 (01:16 -0700)]
Bluetooth: Use explicit check for BR/EDR device type
The BR/EDR and LE setup procedures apply only to BR/EDR device types
and so check for that explicitly. Checking that it is not an AMP
controller is dangerous in case there will be ever a third device
type.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 6 Oct 2013 08:08:57 +0000 (01:08 -0700)]
Bluetooth: Reject enabling controllers without valid addresses
In case of a single mode LE-only controller it is possible that no
public address is used. These type of controllers require a random
address to be configured.
Without a configured static random address, such a controller is
not functional. So reject powering on the controller in this case
until it gets configured with a random address.
The controller setup stage is still run since it is the only way
to determinate if a public address is available or not. So it is
similar on how RFKILL gets handled during initial setup of the
controller.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sat, 5 Oct 2013 18:47:47 +0000 (11:47 -0700)]
Bluetooth: Remove check for number of AMP controller
The number of controllers for the AMP discover response has already
been calculated. And since the hci_dev_list lock is held, it can not
change. So there is no need for any extra checks.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sat, 5 Oct 2013 18:47:46 +0000 (11:47 -0700)]
Bluetooth: Remove pointless inline function
The inline function for BR/EDR controller AMP discover response
info is rather useless. Just include the code into the function
that builds the whole response.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sat, 5 Oct 2013 18:47:44 +0000 (11:47 -0700)]
Bluetooth: Use explicit AMP controller id value for BR/EDR
The special AMP controller id 0 is reserved for the BR/EDR controller
that has the main link. It is a fixed value and so use a constant for
this throughout the code to make it more visible when the handling is
for the BR/EDR channel or when it is for the AMP channel.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sat, 5 Oct 2013 18:47:43 +0000 (11:47 -0700)]
Bluetooth: Separate AMP controller type from HCI device type
There are two defined HCI device types. One is for BR/EDR controllers
and the other is for AMP controllers. The HCI device type is not the
same as the AMP controller type. It just happens that currently the
defined types match, but that is not guaranteed.
Split the usage of AMP controller type into its own domain so that
it is possible to separate between BR/EDR controllers, 802.11 AMP
controllers and any other AMP technology that might be defined in
the future.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sat, 5 Oct 2013 18:47:41 +0000 (11:47 -0700)]
Bluetooth: Remove useless external function to count controllers
The list of controllers can be counted ahead of time and inline
inside the AMP discover handling. There is no need to export such
a function at all.
In addition just count the AMP controller and only allocated space
for a single mandatory BR/EDR controller. No need to allocate more
space than needed.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Johan Hedberg [Sat, 5 Oct 2013 10:01:06 +0000 (12:01 +0200)]
Bluetooth: Fix re-enabling advertising after a connection
LE controllers will automatically disable advertising whenever they
accept a new connection. In order not to fall out of sync with the
advertising setting we need to re-enable advertising whenever the last
LE connection drops. A failure to re-enable advertising should cause the
setting to be disabled, so this patch also calls mgmt_new_settings()
when this happens.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Sat, 5 Oct 2013 10:01:05 +0000 (12:01 +0200)]
Bluetooth: Add public mgmt function to send New Settings event
A function is needed so that the HCI event processing can ask the mgmt
code to emit a new settings event. This is necessary e.g. when the event
processing does updates to mgmt related states without any dependency of
actual mgmt commands.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Andre Guedes [Thu, 3 Oct 2013 21:25:45 +0000 (18:25 -0300)]
Bluetooth: Initialize hci_conn fields in hci_connect_le
This patch moves some hci_conn fields initialization from hci_le_
create_connection() to hci_connect_le(). It makes more sense to
initialize these fields within the function that creates the hci_
conn object.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Thu, 3 Oct 2013 08:26:37 +0000 (01:26 -0700)]
Bluetooth: Only one command per L2CAP LE signalling is supported
The Bluetooth specification makes it clear that only one command
should be present in the L2CAP LE signalling packet. So tighten
the checks here and restrict it to exactly one command.
This is different from L2CAP BR/EDR signalling where multiple
commands can be part of the same packet.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
projects / karo-tx-linux.git / log